net/wireless/nl80211.c

   1 /*
   2  * This is the new netlink-based wireless configuration interface.
   3  *
   4  * Copyright 2006-2010  Johannes Berg <johannes@sipsolutions.net>
   5  * Copyright 2013-2014  Intel Mobile Communications GmbH
   6  * Copyright 2015-2016  Intel Deutschland GmbH
   7  */
   8
   9 #include <linux/if.h>
  10 #include <linux/module.h>
  11 #include <linux/err.h>
  12 #include <linux/slab.h>
  13 #include <linux/list.h>
  14 #include <linux/if_ether.h>
  15 #include <linux/ieee80211.h>
  16 #include <linux/nl80211.h>
  17 #include <linux/rtnetlink.h>
  18 #include <linux/netlink.h>
  19 #include <linux/etherdevice.h>
  20 #include <net/net_namespace.h>
  21 #include <net/genetlink.h>
  22 #include <net/cfg80211.h>
  23 #include <net/sock.h>
  24 #include <net/inet_connection_sock.h>
  25 #include "core.h"
  26 #include "nl80211.h"
  27 #include "reg.h"
  28 #include "rdev-ops.h"
  29
  30 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
  31                                    struct genl_info *info,
  32                                    struct cfg80211_crypto_settings *settings,
  33                                    int cipher_limit);
  34
  35 /* the netlink family */
  36 static struct genl_family nl80211_fam;
  37
  38 /* multicast groups */
  39 enum nl80211_multicast_groups {
  40         NL80211_MCGRP_CONFIG,
  41         NL80211_MCGRP_SCAN,
  42         NL80211_MCGRP_REGULATORY,
  43         NL80211_MCGRP_MLME,
  44         NL80211_MCGRP_VENDOR,
  45         NL80211_MCGRP_NAN,
  46         NL80211_MCGRP_TESTMODE /* keep last - ifdef! */
  47 };
  48
  49 static const struct genl_multicast_group nl80211_mcgrps[] = {
  50         [NL80211_MCGRP_CONFIG] = { .name = NL80211_MULTICAST_GROUP_CONFIG },
  51         [NL80211_MCGRP_SCAN] = { .name = NL80211_MULTICAST_GROUP_SCAN },
  52         [NL80211_MCGRP_REGULATORY] = { .name = NL80211_MULTICAST_GROUP_REG },
  53         [NL80211_MCGRP_MLME] = { .name = NL80211_MULTICAST_GROUP_MLME },
  54         [NL80211_MCGRP_VENDOR] = { .name = NL80211_MULTICAST_GROUP_VENDOR },
  55         [NL80211_MCGRP_NAN] = { .name = NL80211_MULTICAST_GROUP_NAN },
  56 #ifdef CONFIG_NL80211_TESTMODE
  57         [NL80211_MCGRP_TESTMODE] = { .name = NL80211_MULTICAST_GROUP_TESTMODE }
  58 #endif
  59 };
  60
  61 /* returns ERR_PTR values */
  62 static struct wireless_dev *
  63 __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs)
  64 {
  65         struct cfg80211_registered_device *rdev;
  66         struct wireless_dev *result = NULL;
  67         bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
  68         bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
  69         u64 wdev_id;
  70         int wiphy_idx = -1;
  71         int ifidx = -1;
  72
  73         ASSERT_RTNL();
  74
  75         if (!have_ifidx && !have_wdev_id)
  76                 return ERR_PTR(-EINVAL);
  77
  78         if (have_ifidx)
  79                 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
  80         if (have_wdev_id) {
  81                 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
  82                 wiphy_idx = wdev_id >> 32;
  83         }
  84
  85         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
  86                 struct wireless_dev *wdev;
  87
  88                 if (wiphy_net(&rdev->wiphy) != netns)
  89                         continue;
  90
  91                 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
  92                         continue;
  93
  94                 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
  95                         if (have_ifidx && wdev->netdev &&
  96                             wdev->netdev->ifindex == ifidx) {
  97                                 result = wdev;
  98                                 break;
  99                         }
 100                         if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
 101                                 result = wdev;
 102                                 break;
 103                         }
 104                 }
 105
 106                 if (result)
 107                         break;
 108         }
 109
 110         if (result)
 111                 return result;
 112         return ERR_PTR(-ENODEV);
 113 }
 114
 115 static struct cfg80211_registered_device *
 116 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
 117 {
 118         struct cfg80211_registered_device *rdev = NULL, *tmp;
 119         struct net_device *netdev;
 120
 121         ASSERT_RTNL();
 122
 123         if (!attrs[NL80211_ATTR_WIPHY] &&
 124             !attrs[NL80211_ATTR_IFINDEX] &&
 125             !attrs[NL80211_ATTR_WDEV])
 126                 return ERR_PTR(-EINVAL);
 127
 128         if (attrs[NL80211_ATTR_WIPHY])
 129                 rdev = cfg80211_rdev_by_wiphy_idx(
 130                                 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
 131
 132         if (attrs[NL80211_ATTR_WDEV]) {
 133                 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
 134                 struct wireless_dev *wdev;
 135                 bool found = false;
 136
 137                 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
 138                 if (tmp) {
 139                         /* make sure wdev exists */
 140                         list_for_each_entry(wdev, &tmp->wiphy.wdev_list, list) {
 141                                 if (wdev->identifier != (u32)wdev_id)
 142                                         continue;
 143                                 found = true;
 144                                 break;
 145                         }
 146
 147                         if (!found)
 148                                 tmp = NULL;
 149
 150                         if (rdev && tmp != rdev)
 151                                 return ERR_PTR(-EINVAL);
 152                         rdev = tmp;
 153                 }
 154         }
 155
 156         if (attrs[NL80211_ATTR_IFINDEX]) {
 157                 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
 158
 159                 netdev = __dev_get_by_index(netns, ifindex);
 160                 if (netdev) {
 161                         if (netdev->ieee80211_ptr)
 162                                 tmp = wiphy_to_rdev(
 163                                         netdev->ieee80211_ptr->wiphy);
 164                         else
 165                                 tmp = NULL;
 166
 167                         /* not wireless device -- return error */
 168                         if (!tmp)
 169                                 return ERR_PTR(-EINVAL);
 170
 171                         /* mismatch -- return error */
 172                         if (rdev && tmp != rdev)
 173                                 return ERR_PTR(-EINVAL);
 174
 175                         rdev = tmp;
 176                 }
 177         }
 178
 179         if (!rdev)
 180                 return ERR_PTR(-ENODEV);
 181
 182         if (netns != wiphy_net(&rdev->wiphy))
 183                 return ERR_PTR(-ENODEV);
 184
 185         return rdev;
 186 }
 187
 188 /*
 189  * This function returns a pointer to the driver
 190  * that the genl_info item that is passed refers to.
 191  *
 192  * The result of this can be a PTR_ERR and hence must
 193  * be checked with IS_ERR() for errors.
 194  */
 195 static struct cfg80211_registered_device *
 196 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
 197 {
 198         return __cfg80211_rdev_from_attrs(netns, info->attrs);
 199 }
 200
 201 /* policy for the attributes */
 202 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
 203         [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
 204         [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
 205                                       .len = 20-1 },
 206         [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
 207
 208         [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
 209         [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
 210         [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
 211         [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
 212         [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
 213
 214         [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
 215         [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
 216         [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
 217         [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
 218         [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
 219         [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG },
 220
 221         [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
 222         [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
 223         [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
 224
 225         [NL80211_ATTR_MAC] = { .len = ETH_ALEN },
 226         [NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN },
 227
 228         [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
 229         [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
 230                                     .len = WLAN_MAX_KEY_LEN },
 231         [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
 232         [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
 233         [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
 234         [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 235         [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 },
 236
 237         [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
 238         [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
 239         [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
 240                                        .len = IEEE80211_MAX_DATA_LEN },
 241         [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
 242                                        .len = IEEE80211_MAX_DATA_LEN },
 243         [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
 244         [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
 245         [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
 246         [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
 247                                                .len = NL80211_MAX_SUPP_RATES },
 248         [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
 249         [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
 250         [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
 251         [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
 252                                    .len = IEEE80211_MAX_MESH_ID_LEN },
 253         [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
 254
 255         [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
 256         [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
 257
 258         [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
 259         [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
 260         [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
 261         [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
 262                                            .len = NL80211_MAX_SUPP_RATES },
 263         [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
 264
 265         [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
 266         [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
 267
 268         [NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN },
 269
 270         [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
 271         [NL80211_ATTR_IE] = { .type = NLA_BINARY,
 272                               .len = IEEE80211_MAX_DATA_LEN },
 273         [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
 274         [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
 275
 276         [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
 277                                 .len = IEEE80211_MAX_SSID_LEN },
 278         [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
 279         [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
 280         [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
 281         [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
 282         [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
 283         [NL80211_ATTR_STA_FLAGS2] = {
 284                 .len = sizeof(struct nl80211_sta_flag_update),
 285         },
 286         [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
 287         [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
 288         [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
 289         [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
 290         [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
 291         [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
 292         [NL80211_ATTR_PID] = { .type = NLA_U32 },
 293         [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
 294         [NL80211_ATTR_PMKID] = { .type = NLA_BINARY,
 295                                  .len = WLAN_PMKID_LEN },
 296         [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
 297         [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
 298         [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
 299         [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
 300                                  .len = IEEE80211_MAX_DATA_LEN },
 301         [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
 302         [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
 303         [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
 304         [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
 305         [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
 306         [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
 307         [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
 308         [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
 309         [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
 310         [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
 311         [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
 312         [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
 313         [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 314         [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
 315         [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 },
 316         [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
 317         [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
 318         [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
 319         [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 },
 320         [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY,
 321                                          .len = IEEE80211_MAX_DATA_LEN },
 322         [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY,
 323                                          .len = IEEE80211_MAX_DATA_LEN },
 324         [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
 325         [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
 326         [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
 327         [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
 328         [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
 329         [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
 330         [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
 331         [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
 332         [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
 333         [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
 334         [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
 335                                       .len = IEEE80211_MAX_DATA_LEN },
 336         [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
 337         [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
 338         [NL80211_ATTR_HT_CAPABILITY_MASK] = {
 339                 .len = NL80211_HT_CAPABILITY_LEN
 340         },
 341         [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
 342         [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
 343         [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
 344         [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
 345         [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
 346         [NL80211_ATTR_AUTH_DATA] = { .type = NLA_BINARY, },
 347         [NL80211_ATTR_VHT_CAPABILITY] = { .len = NL80211_VHT_CAPABILITY_LEN },
 348         [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
 349         [NL80211_ATTR_P2P_CTWINDOW] = { .type = NLA_U8 },
 350         [NL80211_ATTR_P2P_OPPPS] = { .type = NLA_U8 },
 351         [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
 352         [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
 353         [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
 354         [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
 355         [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
 356         [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
 357         [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
 358                 .len = NL80211_VHT_CAPABILITY_LEN,
 359         },
 360         [NL80211_ATTR_MDID] = { .type = NLA_U16 },
 361         [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
 362                                   .len = IEEE80211_MAX_DATA_LEN },
 363         [NL80211_ATTR_PEER_AID] = { .type = NLA_U16 },
 364         [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
 365         [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
 366         [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
 367         [NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_BINARY },
 368         [NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_BINARY },
 369         [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY },
 370         [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY },
 371         [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
 372         [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
 373         [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
 374         [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
 375         [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
 376         [NL80211_ATTR_QOS_MAP] = { .type = NLA_BINARY,
 377                                    .len = IEEE80211_QOS_MAP_LEN_MAX },
 378         [NL80211_ATTR_MAC_HINT] = { .len = ETH_ALEN },
 379         [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
 380         [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
 381         [NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG },
 382         [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
 383         [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
 384         [NL80211_ATTR_TSID] = { .type = NLA_U8 },
 385         [NL80211_ATTR_USER_PRIO] = { .type = NLA_U8 },
 386         [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
 387         [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
 388         [NL80211_ATTR_MAC_MASK] = { .len = ETH_ALEN },
 389         [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG },
 390         [NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 },
 391         [NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 },
 392         [NL80211_ATTR_REG_INDOOR] = { .type = NLA_FLAG },
 393         [NL80211_ATTR_PBSS] = { .type = NLA_FLAG },
 394         [NL80211_ATTR_BSS_SELECT] = { .type = NLA_NESTED },
 395         [NL80211_ATTR_STA_SUPPORT_P2P_PS] = { .type = NLA_U8 },
 396         [NL80211_ATTR_MU_MIMO_GROUP_DATA] = {
 397                 .len = VHT_MUMIMO_GROUPS_DATA_LEN
 398         },
 399         [NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR] = { .len = ETH_ALEN },
 400         [NL80211_ATTR_NAN_MASTER_PREF] = { .type = NLA_U8 },
 401         [NL80211_ATTR_NAN_DUAL] = { .type = NLA_U8 },
 402         [NL80211_ATTR_NAN_FUNC] = { .type = NLA_NESTED },
 403         [NL80211_ATTR_FILS_KEK] = { .type = NLA_BINARY,
 404                                     .len = FILS_MAX_KEK_LEN },
 405         [NL80211_ATTR_FILS_NONCES] = { .len = 2 * FILS_NONCE_LEN },
 406         [NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED] = { .type = NLA_FLAG, },
 407         [NL80211_ATTR_BSSID] = { .len = ETH_ALEN },
 408 };
 409
 410 /* policy for the key attributes */
 411 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
 412         [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
 413         [NL80211_KEY_IDX] = { .type = NLA_U8 },
 414         [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
 415         [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 416         [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
 417         [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
 418         [NL80211_KEY_TYPE] = { .type = NLA_U32 },
 419         [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 420 };
 421
 422 /* policy for the key default flags */
 423 static const struct nla_policy
 424 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
 425         [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
 426         [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
 427 };
 428
 429 #ifdef CONFIG_PM
 430 /* policy for WoWLAN attributes */
 431 static const struct nla_policy
 432 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
 433         [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
 434         [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
 435         [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
 436         [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
 437         [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
 438         [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
 439         [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
 440         [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
 441         [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
 442         [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
 443 };
 444
 445 static const struct nla_policy
 446 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
 447         [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
 448         [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
 449         [NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN },
 450         [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
 451         [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
 452         [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 },
 453         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
 454                 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
 455         },
 456         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
 457                 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
 458         },
 459         [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
 460         [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 },
 461         [NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 },
 462 };
 463 #endif /* CONFIG_PM */
 464
 465 /* policy for coalesce rule attributes */
 466 static const struct nla_policy
 467 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
 468         [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
 469         [NL80211_ATTR_COALESCE_RULE_CONDITION] = { .type = NLA_U32 },
 470         [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
 471 };
 472
 473 /* policy for GTK rekey offload attributes */
 474 static const struct nla_policy
 475 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
 476         [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
 477         [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
 478         [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
 479 };
 480
 481 static const struct nla_policy
 482 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
 483         [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
 484                                                  .len = IEEE80211_MAX_SSID_LEN },
 485         [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
 486 };
 487
 488 static const struct nla_policy
 489 nl80211_plan_policy[NL80211_SCHED_SCAN_PLAN_MAX + 1] = {
 490         [NL80211_SCHED_SCAN_PLAN_INTERVAL] = { .type = NLA_U32 },
 491         [NL80211_SCHED_SCAN_PLAN_ITERATIONS] = { .type = NLA_U32 },
 492 };
 493
 494 static const struct nla_policy
 495 nl80211_bss_select_policy[NL80211_BSS_SELECT_ATTR_MAX + 1] = {
 496         [NL80211_BSS_SELECT_ATTR_RSSI] = { .type = NLA_FLAG },
 497         [NL80211_BSS_SELECT_ATTR_BAND_PREF] = { .type = NLA_U32 },
 498         [NL80211_BSS_SELECT_ATTR_RSSI_ADJUST] = {
 499                 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
 500         },
 501 };
 502
 503 /* policy for NAN function attributes */
 504 static const struct nla_policy
 505 nl80211_nan_func_policy[NL80211_NAN_FUNC_ATTR_MAX + 1] = {
 506         [NL80211_NAN_FUNC_TYPE] = { .type = NLA_U8 },
 507         [NL80211_NAN_FUNC_SERVICE_ID] = { .type = NLA_BINARY,
 508                                     .len = NL80211_NAN_FUNC_SERVICE_ID_LEN },
 509         [NL80211_NAN_FUNC_PUBLISH_TYPE] = { .type = NLA_U8 },
 510         [NL80211_NAN_FUNC_PUBLISH_BCAST] = { .type = NLA_FLAG },
 511         [NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE] = { .type = NLA_FLAG },
 512         [NL80211_NAN_FUNC_FOLLOW_UP_ID] = { .type = NLA_U8 },
 513         [NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] = { .type = NLA_U8 },
 514         [NL80211_NAN_FUNC_FOLLOW_UP_DEST] = { .len = ETH_ALEN },
 515         [NL80211_NAN_FUNC_CLOSE_RANGE] = { .type = NLA_FLAG },
 516         [NL80211_NAN_FUNC_TTL] = { .type = NLA_U32 },
 517         [NL80211_NAN_FUNC_SERVICE_INFO] = { .type = NLA_BINARY,
 518                         .len = NL80211_NAN_FUNC_SERVICE_SPEC_INFO_MAX_LEN },
 519         [NL80211_NAN_FUNC_SRF] = { .type = NLA_NESTED },
 520         [NL80211_NAN_FUNC_RX_MATCH_FILTER] = { .type = NLA_NESTED },
 521         [NL80211_NAN_FUNC_TX_MATCH_FILTER] = { .type = NLA_NESTED },
 522         [NL80211_NAN_FUNC_INSTANCE_ID] = { .type = NLA_U8 },
 523         [NL80211_NAN_FUNC_TERM_REASON] = { .type = NLA_U8 },
 524 };
 525
 526 /* policy for Service Response Filter attributes */
 527 static const struct nla_policy
 528 nl80211_nan_srf_policy[NL80211_NAN_SRF_ATTR_MAX + 1] = {
 529         [NL80211_NAN_SRF_INCLUDE] = { .type = NLA_FLAG },
 530         [NL80211_NAN_SRF_BF] = { .type = NLA_BINARY,
 531                                  .len =  NL80211_NAN_FUNC_SRF_MAX_LEN },
 532         [NL80211_NAN_SRF_BF_IDX] = { .type = NLA_U8 },
 533         [NL80211_NAN_SRF_MAC_ADDRS] = { .type = NLA_NESTED },
 534 };
 535
 536 static int nl80211_prepare_wdev_dump(struct sk_buff *skb,
 537                                      struct netlink_callback *cb,
 538                                      struct cfg80211_registered_device **rdev,
 539                                      struct wireless_dev **wdev)
 540 {
 541         int err;
 542
 543         rtnl_lock();
 544
 545         if (!cb->args[0]) {
 546                 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
 547                                   genl_family_attrbuf(&nl80211_fam),
 548                                   nl80211_fam.maxattr, nl80211_policy);
 549                 if (err)
 550                         goto out_unlock;
 551
 552                 *wdev = __cfg80211_wdev_from_attrs(
 553                                         sock_net(skb->sk),
 554                                         genl_family_attrbuf(&nl80211_fam));
 555                 if (IS_ERR(*wdev)) {
 556                         err = PTR_ERR(*wdev);
 557                         goto out_unlock;
 558                 }
 559                 *rdev = wiphy_to_rdev((*wdev)->wiphy);
 560                 /* 0 is the first index - add 1 to parse only once */
 561                 cb->args[0] = (*rdev)->wiphy_idx + 1;
 562                 cb->args[1] = (*wdev)->identifier;
 563         } else {
 564                 /* subtract the 1 again here */
 565                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
 566                 struct wireless_dev *tmp;
 567
 568                 if (!wiphy) {
 569                         err = -ENODEV;
 570                         goto out_unlock;
 571                 }
 572                 *rdev = wiphy_to_rdev(wiphy);
 573                 *wdev = NULL;
 574
 575                 list_for_each_entry(tmp, &(*rdev)->wiphy.wdev_list, list) {
 576                         if (tmp->identifier == cb->args[1]) {
 577                                 *wdev = tmp;
 578                                 break;
 579                         }
 580                 }
 581
 582                 if (!*wdev) {
 583                         err = -ENODEV;
 584                         goto out_unlock;
 585                 }
 586         }
 587
 588         return 0;
 589  out_unlock:
 590         rtnl_unlock();
 591         return err;
 592 }
 593
 594 static void nl80211_finish_wdev_dump(struct cfg80211_registered_device *rdev)
 595 {
 596         rtnl_unlock();
 597 }
 598
 599 /* IE validation */
 600 static bool is_valid_ie_attr(const struct nlattr *attr)
 601 {
 602         const u8 *pos;
 603         int len;
 604
 605         if (!attr)
 606                 return true;
 607
 608         pos = nla_data(attr);
 609         len = nla_len(attr);
 610
 611         while (len) {
 612                 u8 elemlen;
 613
 614                 if (len < 2)
 615                         return false;
 616                 len -= 2;
 617
 618                 elemlen = pos[1];
 619                 if (elemlen > len)
 620                         return false;
 621
 622                 len -= elemlen;
 623                 pos += 2 + elemlen;
 624         }
 625
 626         return true;
 627 }
 628
 629 /* message building helper */
 630 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
 631                                    int flags, u8 cmd)
 632 {
 633         /* since there is no private header just add the generic one */
 634         return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
 635 }
 636
 637 static int nl80211_msg_put_channel(struct sk_buff *msg,
 638                                    struct ieee80211_channel *chan,
 639                                    bool large)
 640 {
 641         /* Some channels must be completely excluded from the
 642          * list to protect old user-space tools from breaking
 643          */
 644         if (!large && chan->flags &
 645             (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
 646                 return 0;
 647
 648         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
 649                         chan->center_freq))
 650                 goto nla_put_failure;
 651
 652         if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
 653             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
 654                 goto nla_put_failure;
 655         if (chan->flags & IEEE80211_CHAN_NO_IR) {
 656                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
 657                         goto nla_put_failure;
 658                 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
 659                         goto nla_put_failure;
 660         }
 661         if (chan->flags & IEEE80211_CHAN_RADAR) {
 662                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
 663                         goto nla_put_failure;
 664                 if (large) {
 665                         u32 time;
 666
 667                         time = elapsed_jiffies_msecs(chan->dfs_state_entered);
 668
 669                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
 670                                         chan->dfs_state))
 671                                 goto nla_put_failure;
 672                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
 673                                         time))
 674                                 goto nla_put_failure;
 675                         if (nla_put_u32(msg,
 676                                         NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
 677                                         chan->dfs_cac_ms))
 678                                 goto nla_put_failure;
 679                 }
 680         }
 681
 682         if (large) {
 683                 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
 684                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
 685                         goto nla_put_failure;
 686                 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
 687                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
 688                         goto nla_put_failure;
 689                 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
 690                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
 691                         goto nla_put_failure;
 692                 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
 693                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
 694                         goto nla_put_failure;
 695                 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
 696                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
 697                         goto nla_put_failure;
 698                 if ((chan->flags & IEEE80211_CHAN_IR_CONCURRENT) &&
 699                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_IR_CONCURRENT))
 700                         goto nla_put_failure;
 701                 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
 702                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
 703                         goto nla_put_failure;
 704                 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
 705                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
 706                         goto nla_put_failure;
 707         }
 708
 709         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
 710                         DBM_TO_MBM(chan->max_power)))
 711                 goto nla_put_failure;
 712
 713         return 0;
 714
 715  nla_put_failure:
 716         return -ENOBUFS;
 717 }
 718
 719 /* netlink command implementations */
 720
 721 struct key_parse {
 722         struct key_params p;
 723         int idx;
 724         int type;
 725         bool def, defmgmt;
 726         bool def_uni, def_multi;
 727 };
 728
 729 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
 730 {
 731         struct nlattr *tb[NL80211_KEY_MAX + 1];
 732         int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
 733                                    nl80211_key_policy);
 734         if (err)
 735                 return err;
 736
 737         k->def = !!tb[NL80211_KEY_DEFAULT];
 738         k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
 739
 740         if (k->def) {
 741                 k->def_uni = true;
 742                 k->def_multi = true;
 743         }
 744         if (k->defmgmt)
 745                 k->def_multi = true;
 746
 747         if (tb[NL80211_KEY_IDX])
 748                 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
 749
 750         if (tb[NL80211_KEY_DATA]) {
 751                 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
 752                 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
 753         }
 754
 755         if (tb[NL80211_KEY_SEQ]) {
 756                 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
 757                 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
 758         }
 759
 760         if (tb[NL80211_KEY_CIPHER])
 761                 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
 762
 763         if (tb[NL80211_KEY_TYPE]) {
 764                 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
 765                 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
 766                         return -EINVAL;
 767         }
 768
 769         if (tb[NL80211_KEY_DEFAULT_TYPES]) {
 770                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
 771
 772                 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
 773                                        tb[NL80211_KEY_DEFAULT_TYPES],
 774                                        nl80211_key_default_policy);
 775                 if (err)
 776                         return err;
 777
 778                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
 779                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
 780         }
 781
 782         return 0;
 783 }
 784
 785 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
 786 {
 787         if (info->attrs[NL80211_ATTR_KEY_DATA]) {
 788                 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
 789                 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
 790         }
 791
 792         if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
 793                 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
 794                 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
 795         }
 796
 797         if (info->attrs[NL80211_ATTR_KEY_IDX])
 798                 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
 799
 800         if (info->attrs[NL80211_ATTR_KEY_CIPHER])
 801                 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
 802
 803         k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
 804         k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
 805
 806         if (k->def) {
 807                 k->def_uni = true;
 808                 k->def_multi = true;
 809         }
 810         if (k->defmgmt)
 811                 k->def_multi = true;
 812
 813         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
 814                 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
 815                 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
 816                         return -EINVAL;
 817         }
 818
 819         if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
 820                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
 821                 int err = nla_parse_nested(
 822                                 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
 823                                 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
 824                                 nl80211_key_default_policy);
 825                 if (err)
 826                         return err;
 827
 828                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
 829                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
 830         }
 831
 832         return 0;
 833 }
 834
 835 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
 836 {
 837         int err;
 838
 839         memset(k, 0, sizeof(*k));
 840         k->idx = -1;
 841         k->type = -1;
 842
 843         if (info->attrs[NL80211_ATTR_KEY])
 844                 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
 845         else
 846                 err = nl80211_parse_key_old(info, k);
 847
 848         if (err)
 849                 return err;
 850
 851         if (k->def && k->defmgmt)
 852                 return -EINVAL;
 853
 854         if (k->defmgmt) {
 855                 if (k->def_uni || !k->def_multi)
 856                         return -EINVAL;
 857         }
 858
 859         if (k->idx != -1) {
 860                 if (k->defmgmt) {
 861                         if (k->idx < 4 || k->idx > 5)
 862                                 return -EINVAL;
 863                 } else if (k->def) {
 864                         if (k->idx < 0 || k->idx > 3)
 865                                 return -EINVAL;
 866                 } else {
 867                         if (k->idx < 0 || k->idx > 5)
 868                                 return -EINVAL;
 869                 }
 870         }
 871
 872         return 0;
 873 }
 874
 875 static struct cfg80211_cached_keys *
 876 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
 877                        struct nlattr *keys, bool *no_ht)
 878 {
 879         struct key_parse parse;
 880         struct nlattr *key;
 881         struct cfg80211_cached_keys *result;
 882         int rem, err, def = 0;
 883         bool have_key = false;
 884
 885         nla_for_each_nested(key, keys, rem) {
 886                 have_key = true;
 887                 break;
 888         }
 889
 890         if (!have_key)
 891                 return NULL;
 892
 893         result = kzalloc(sizeof(*result), GFP_KERNEL);
 894         if (!result)
 895                 return ERR_PTR(-ENOMEM);
 896
 897         result->def = -1;
 898
 899         nla_for_each_nested(key, keys, rem) {
 900                 memset(&parse, 0, sizeof(parse));
 901                 parse.idx = -1;
 902
 903                 err = nl80211_parse_key_new(key, &parse);
 904                 if (err)
 905                         goto error;
 906                 err = -EINVAL;
 907                 if (!parse.p.key)
 908                         goto error;
 909                 if (parse.idx < 0 || parse.idx > 3)
 910                         goto error;
 911                 if (parse.def) {
 912                         if (def)
 913                                 goto error;
 914                         def = 1;
 915                         result->def = parse.idx;
 916                         if (!parse.def_uni || !parse.def_multi)
 917                                 goto error;
 918                 } else if (parse.defmgmt)
 919                         goto error;
 920                 err = cfg80211_validate_key_settings(rdev, &parse.p,
 921                                                      parse.idx, false, NULL);
 922                 if (err)
 923                         goto error;
 924                 if (parse.p.cipher != WLAN_CIPHER_SUITE_WEP40 &&
 925                     parse.p.cipher != WLAN_CIPHER_SUITE_WEP104) {
 926                         err = -EINVAL;
 927                         goto error;
 928                 }
 929                 result->params[parse.idx].cipher = parse.p.cipher;
 930                 result->params[parse.idx].key_len = parse.p.key_len;
 931                 result->params[parse.idx].key = result->data[parse.idx];
 932                 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
 933
 934                 /* must be WEP key if we got here */
 935                 if (no_ht)
 936                         *no_ht = true;
 937         }
 938
 939         if (result->def < 0) {
 940                 err = -EINVAL;
 941                 goto error;
 942         }
 943
 944         return result;
 945  error:
 946         kfree(result);
 947         return ERR_PTR(err);
 948 }
 949
 950 static int nl80211_key_allowed(struct wireless_dev *wdev)
 951 {
 952         ASSERT_WDEV_LOCK(wdev);
 953
 954         switch (wdev->iftype) {
 955         case NL80211_IFTYPE_AP:
 956         case NL80211_IFTYPE_AP_VLAN:
 957         case NL80211_IFTYPE_P2P_GO:
 958         case NL80211_IFTYPE_MESH_POINT:
 959                 break;
 960         case NL80211_IFTYPE_ADHOC:
 961         case NL80211_IFTYPE_STATION:
 962         case NL80211_IFTYPE_P2P_CLIENT:
 963                 if (!wdev->current_bss)
 964                         return -ENOLINK;
 965                 break;
 966         case NL80211_IFTYPE_UNSPECIFIED:
 967         case NL80211_IFTYPE_OCB:
 968         case NL80211_IFTYPE_MONITOR:
 969         case NL80211_IFTYPE_NAN:
 970         case NL80211_IFTYPE_P2P_DEVICE:
 971         case NL80211_IFTYPE_WDS:
 972         case NUM_NL80211_IFTYPES:
 973                 return -EINVAL;
 974         }
 975
 976         return 0;
 977 }
 978
 979 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
 980                                                         struct nlattr *tb)
 981 {
 982         struct ieee80211_channel *chan;
 983
 984         if (tb == NULL)
 985                 return NULL;
 986         chan = ieee80211_get_channel(wiphy, nla_get_u32(tb));
 987         if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
 988                 return NULL;
 989         return chan;
 990 }
 991
 992 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
 993 {
 994         struct nlattr *nl_modes = nla_nest_start(msg, attr);
 995         int i;
 996
 997         if (!nl_modes)
 998                 goto nla_put_failure;
 999
1000         i = 0;
1001         while (ifmodes) {
1002                 if ((ifmodes & 1) && nla_put_flag(msg, i))
1003                         goto nla_put_failure;
1004                 ifmodes >>= 1;
1005                 i++;
1006         }
1007
1008         nla_nest_end(msg, nl_modes);
1009         return 0;
1010
1011 nla_put_failure:
1012         return -ENOBUFS;
1013 }
1014
1015 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
1016                                           struct sk_buff *msg,
1017                                           bool large)
1018 {
1019         struct nlattr *nl_combis;
1020         int i, j;
1021
1022         nl_combis = nla_nest_start(msg,
1023                                 NL80211_ATTR_INTERFACE_COMBINATIONS);
1024         if (!nl_combis)
1025                 goto nla_put_failure;
1026
1027         for (i = 0; i < wiphy->n_iface_combinations; i++) {
1028                 const struct ieee80211_iface_combination *c;
1029                 struct nlattr *nl_combi, *nl_limits;
1030
1031                 c = &wiphy->iface_combinations[i];
1032
1033                 nl_combi = nla_nest_start(msg, i + 1);
1034                 if (!nl_combi)
1035                         goto nla_put_failure;
1036
1037                 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
1038                 if (!nl_limits)
1039                         goto nla_put_failure;
1040
1041                 for (j = 0; j < c->n_limits; j++) {
1042                         struct nlattr *nl_limit;
1043
1044                         nl_limit = nla_nest_start(msg, j + 1);
1045                         if (!nl_limit)
1046                                 goto nla_put_failure;
1047                         if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
1048                                         c->limits[j].max))
1049                                 goto nla_put_failure;
1050                         if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
1051                                                 c->limits[j].types))
1052                                 goto nla_put_failure;
1053                         nla_nest_end(msg, nl_limit);
1054                 }
1055
1056                 nla_nest_end(msg, nl_limits);
1057
1058                 if (c->beacon_int_infra_match &&
1059                     nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
1060                         goto nla_put_failure;
1061                 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
1062                                 c->num_different_channels) ||
1063                     nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
1064                                 c->max_interfaces))
1065                         goto nla_put_failure;
1066                 if (large &&
1067                     (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
1068                                 c->radar_detect_widths) ||
1069                      nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
1070                                 c->radar_detect_regions)))
1071                         goto nla_put_failure;
1072                 if (c->beacon_int_min_gcd &&
1073                     nla_put_u32(msg, NL80211_IFACE_COMB_BI_MIN_GCD,
1074                                 c->beacon_int_min_gcd))
1075                         goto nla_put_failure;
1076
1077                 nla_nest_end(msg, nl_combi);
1078         }
1079
1080         nla_nest_end(msg, nl_combis);
1081
1082         return 0;
1083 nla_put_failure:
1084         return -ENOBUFS;
1085 }
1086
1087 #ifdef CONFIG_PM
1088 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1089                                         struct sk_buff *msg)
1090 {
1091         const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1092         struct nlattr *nl_tcp;
1093
1094         if (!tcp)
1095                 return 0;
1096
1097         nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1098         if (!nl_tcp)
1099                 return -ENOBUFS;
1100
1101         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1102                         tcp->data_payload_max))
1103                 return -ENOBUFS;
1104
1105         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1106                         tcp->data_payload_max))
1107                 return -ENOBUFS;
1108
1109         if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1110                 return -ENOBUFS;
1111
1112         if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1113                                 sizeof(*tcp->tok), tcp->tok))
1114                 return -ENOBUFS;
1115
1116         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1117                         tcp->data_interval_max))
1118                 return -ENOBUFS;
1119
1120         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1121                         tcp->wake_payload_max))
1122                 return -ENOBUFS;
1123
1124         nla_nest_end(msg, nl_tcp);
1125         return 0;
1126 }
1127
1128 static int nl80211_send_wowlan(struct sk_buff *msg,
1129                                struct cfg80211_registered_device *rdev,
1130                                bool large)
1131 {
1132         struct nlattr *nl_wowlan;
1133
1134         if (!rdev->wiphy.wowlan)
1135                 return 0;
1136
1137         nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1138         if (!nl_wowlan)
1139                 return -ENOBUFS;
1140
1141         if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1142              nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1143             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1144              nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1145             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1146              nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1147             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1148              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1149             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1150              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1151             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1152              nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1153             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1154              nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1155             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1156              nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1157                 return -ENOBUFS;
1158
1159         if (rdev->wiphy.wowlan->n_patterns) {
1160                 struct nl80211_pattern_support pat = {
1161                         .max_patterns = rdev->wiphy.wowlan->n_patterns,
1162                         .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1163                         .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1164                         .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1165                 };
1166
1167                 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1168                             sizeof(pat), &pat))
1169                         return -ENOBUFS;
1170         }
1171
1172         if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) &&
1173             nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT,
1174                         rdev->wiphy.wowlan->max_nd_match_sets))
1175                 return -ENOBUFS;
1176
1177         if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1178                 return -ENOBUFS;
1179
1180         nla_nest_end(msg, nl_wowlan);
1181
1182         return 0;
1183 }
1184 #endif
1185
1186 static int nl80211_send_coalesce(struct sk_buff *msg,
1187                                  struct cfg80211_registered_device *rdev)
1188 {
1189         struct nl80211_coalesce_rule_support rule;
1190
1191         if (!rdev->wiphy.coalesce)
1192                 return 0;
1193
1194         rule.max_rules = rdev->wiphy.coalesce->n_rules;
1195         rule.max_delay = rdev->wiphy.coalesce->max_delay;
1196         rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1197         rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1198         rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1199         rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1200
1201         if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1202                 return -ENOBUFS;
1203
1204         return 0;
1205 }
1206
1207 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1208                                       struct ieee80211_supported_band *sband)
1209 {
1210         struct nlattr *nl_rates, *nl_rate;
1211         struct ieee80211_rate *rate;
1212         int i;
1213
1214         /* add HT info */
1215         if (sband->ht_cap.ht_supported &&
1216             (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1217                      sizeof(sband->ht_cap.mcs),
1218                      &sband->ht_cap.mcs) ||
1219              nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1220                          sband->ht_cap.cap) ||
1221              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1222                         sband->ht_cap.ampdu_factor) ||
1223              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1224                         sband->ht_cap.ampdu_density)))
1225                 return -ENOBUFS;
1226
1227         /* add VHT info */
1228         if (sband->vht_cap.vht_supported &&
1229             (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1230                      sizeof(sband->vht_cap.vht_mcs),
1231                      &sband->vht_cap.vht_mcs) ||
1232              nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1233                          sband->vht_cap.cap)))
1234                 return -ENOBUFS;
1235
1236         /* add bitrates */
1237         nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
1238         if (!nl_rates)
1239                 return -ENOBUFS;
1240
1241         for (i = 0; i < sband->n_bitrates; i++) {
1242                 nl_rate = nla_nest_start(msg, i);
1243                 if (!nl_rate)
1244                         return -ENOBUFS;
1245
1246                 rate = &sband->bitrates[i];
1247                 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1248                                 rate->bitrate))
1249                         return -ENOBUFS;
1250                 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1251                     nla_put_flag(msg,
1252                                  NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1253                         return -ENOBUFS;
1254
1255                 nla_nest_end(msg, nl_rate);
1256         }
1257
1258         nla_nest_end(msg, nl_rates);
1259
1260         return 0;
1261 }
1262
1263 static int
1264 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1265                          const struct ieee80211_txrx_stypes *mgmt_stypes)
1266 {
1267         u16 stypes;
1268         struct nlattr *nl_ftypes, *nl_ifs;
1269         enum nl80211_iftype ift;
1270         int i;
1271
1272         if (!mgmt_stypes)
1273                 return 0;
1274
1275         nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
1276         if (!nl_ifs)
1277                 return -ENOBUFS;
1278
1279         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1280                 nl_ftypes = nla_nest_start(msg, ift);
1281                 if (!nl_ftypes)
1282                         return -ENOBUFS;
1283                 i = 0;
1284                 stypes = mgmt_stypes[ift].tx;
1285                 while (stypes) {
1286                         if ((stypes & 1) &&
1287                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1288                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1289                                 return -ENOBUFS;
1290                         stypes >>= 1;
1291                         i++;
1292                 }
1293                 nla_nest_end(msg, nl_ftypes);
1294         }
1295
1296         nla_nest_end(msg, nl_ifs);
1297
1298         nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
1299         if (!nl_ifs)
1300                 return -ENOBUFS;
1301
1302         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1303                 nl_ftypes = nla_nest_start(msg, ift);
1304                 if (!nl_ftypes)
1305                         return -ENOBUFS;
1306                 i = 0;
1307                 stypes = mgmt_stypes[ift].rx;
1308                 while (stypes) {
1309                         if ((stypes & 1) &&
1310                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1311                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1312                                 return -ENOBUFS;
1313                         stypes >>= 1;
1314                         i++;
1315                 }
1316                 nla_nest_end(msg, nl_ftypes);
1317         }
1318         nla_nest_end(msg, nl_ifs);
1319
1320         return 0;
1321 }
1322
1323 #define CMD(op, n)                                                      \
1324          do {                                                           \
1325                 if (rdev->ops->op) {                                    \
1326                         i++;                                            \
1327                         if (nla_put_u32(msg, i, NL80211_CMD_ ## n))     \
1328                                 goto nla_put_failure;                   \
1329                 }                                                       \
1330         } while (0)
1331
1332 static int nl80211_add_commands_unsplit(struct cfg80211_registered_device *rdev,
1333                                         struct sk_buff *msg)
1334 {
1335         int i = 0;
1336
1337         /*
1338          * do *NOT* add anything into this function, new things need to be
1339          * advertised only to new versions of userspace that can deal with
1340          * the split (and they can't possibly care about new features...
1341          */
1342         CMD(add_virtual_intf, NEW_INTERFACE);
1343         CMD(change_virtual_intf, SET_INTERFACE);
1344         CMD(add_key, NEW_KEY);
1345         CMD(start_ap, START_AP);
1346         CMD(add_station, NEW_STATION);
1347         CMD(add_mpath, NEW_MPATH);
1348         CMD(update_mesh_config, SET_MESH_CONFIG);
1349         CMD(change_bss, SET_BSS);
1350         CMD(auth, AUTHENTICATE);
1351         CMD(assoc, ASSOCIATE);
1352         CMD(deauth, DEAUTHENTICATE);
1353         CMD(disassoc, DISASSOCIATE);
1354         CMD(join_ibss, JOIN_IBSS);
1355         CMD(join_mesh, JOIN_MESH);
1356         CMD(set_pmksa, SET_PMKSA);
1357         CMD(del_pmksa, DEL_PMKSA);
1358         CMD(flush_pmksa, FLUSH_PMKSA);
1359         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1360                 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1361         CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1362         CMD(mgmt_tx, FRAME);
1363         CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1364         if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1365                 i++;
1366                 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1367                         goto nla_put_failure;
1368         }
1369         if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
1370             rdev->ops->join_mesh) {
1371                 i++;
1372                 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1373                         goto nla_put_failure;
1374         }
1375         CMD(set_wds_peer, SET_WDS_PEER);
1376         if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1377                 CMD(tdls_mgmt, TDLS_MGMT);
1378                 CMD(tdls_oper, TDLS_OPER);
1379         }
1380         if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
1381                 CMD(sched_scan_start, START_SCHED_SCAN);
1382         CMD(probe_client, PROBE_CLIENT);
1383         CMD(set_noack_map, SET_NOACK_MAP);
1384         if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1385                 i++;
1386                 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1387                         goto nla_put_failure;
1388         }
1389         CMD(start_p2p_device, START_P2P_DEVICE);
1390         CMD(set_mcast_rate, SET_MCAST_RATE);
1391 #ifdef CONFIG_NL80211_TESTMODE
1392         CMD(testmode_cmd, TESTMODE);
1393 #endif
1394
1395         if (rdev->ops->connect || rdev->ops->auth) {
1396                 i++;
1397                 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1398                         goto nla_put_failure;
1399         }
1400
1401         if (rdev->ops->disconnect || rdev->ops->deauth) {
1402                 i++;
1403                 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1404                         goto nla_put_failure;
1405         }
1406
1407         return i;
1408  nla_put_failure:
1409         return -ENOBUFS;
1410 }
1411
1412 struct nl80211_dump_wiphy_state {
1413         s64 filter_wiphy;
1414         long start;
1415         long split_start, band_start, chan_start, capa_start;
1416         bool split;
1417 };
1418
1419 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
1420                               enum nl80211_commands cmd,
1421                               struct sk_buff *msg, u32 portid, u32 seq,
1422                               int flags, struct nl80211_dump_wiphy_state *state)
1423 {
1424         void *hdr;
1425         struct nlattr *nl_bands, *nl_band;
1426         struct nlattr *nl_freqs, *nl_freq;
1427         struct nlattr *nl_cmds;
1428         enum nl80211_band band;
1429         struct ieee80211_channel *chan;
1430         int i;
1431         const struct ieee80211_txrx_stypes *mgmt_stypes =
1432                                 rdev->wiphy.mgmt_stypes;
1433         u32 features;
1434
1435         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
1436         if (!hdr)
1437                 return -ENOBUFS;
1438
1439         if (WARN_ON(!state))
1440                 return -EINVAL;
1441
1442         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
1443             nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
1444                            wiphy_name(&rdev->wiphy)) ||
1445             nla_put_u32(msg, NL80211_ATTR_GENERATION,
1446                         cfg80211_rdev_list_generation))
1447                 goto nla_put_failure;
1448
1449         if (cmd != NL80211_CMD_NEW_WIPHY)
1450                 goto finish;
1451
1452         switch (state->split_start) {
1453         case 0:
1454                 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
1455                                rdev->wiphy.retry_short) ||
1456                     nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
1457                                rdev->wiphy.retry_long) ||
1458                     nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
1459                                 rdev->wiphy.frag_threshold) ||
1460                     nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
1461                                 rdev->wiphy.rts_threshold) ||
1462                     nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
1463                                rdev->wiphy.coverage_class) ||
1464                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
1465                                rdev->wiphy.max_scan_ssids) ||
1466                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
1467                                rdev->wiphy.max_sched_scan_ssids) ||
1468                     nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
1469                                 rdev->wiphy.max_scan_ie_len) ||
1470                     nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
1471                                 rdev->wiphy.max_sched_scan_ie_len) ||
1472                     nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
1473                                rdev->wiphy.max_match_sets) ||
1474                     nla_put_u32(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS,
1475                                 rdev->wiphy.max_sched_scan_plans) ||
1476                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL,
1477                                 rdev->wiphy.max_sched_scan_plan_interval) ||
1478                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS,
1479                                 rdev->wiphy.max_sched_scan_plan_iterations))
1480                         goto nla_put_failure;
1481
1482                 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
1483                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1484                         goto nla_put_failure;
1485                 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
1486                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
1487                         goto nla_put_failure;
1488                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
1489                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
1490                         goto nla_put_failure;
1491                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
1492                     nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
1493                         goto nla_put_failure;
1494                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
1495                     nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
1496                         goto nla_put_failure;
1497                 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
1498                     nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
1499                         goto nla_put_failure;
1500                 state->split_start++;
1501                 if (state->split)
1502                         break;
1503         case 1:
1504                 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
1505                             sizeof(u32) * rdev->wiphy.n_cipher_suites,
1506                             rdev->wiphy.cipher_suites))
1507                         goto nla_put_failure;
1508
1509                 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
1510                                rdev->wiphy.max_num_pmkids))
1511                         goto nla_put_failure;
1512
1513                 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
1514                     nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
1515                         goto nla_put_failure;
1516
1517                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
1518                                 rdev->wiphy.available_antennas_tx) ||
1519                     nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
1520                                 rdev->wiphy.available_antennas_rx))
1521                         goto nla_put_failure;
1522
1523                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
1524                     nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
1525                                 rdev->wiphy.probe_resp_offload))
1526                         goto nla_put_failure;
1527
1528                 if ((rdev->wiphy.available_antennas_tx ||
1529                      rdev->wiphy.available_antennas_rx) &&
1530                     rdev->ops->get_antenna) {
1531                         u32 tx_ant = 0, rx_ant = 0;
1532                         int res;
1533
1534                         res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
1535                         if (!res) {
1536                                 if (nla_put_u32(msg,
1537                                                 NL80211_ATTR_WIPHY_ANTENNA_TX,
1538                                                 tx_ant) ||
1539                                     nla_put_u32(msg,
1540                                                 NL80211_ATTR_WIPHY_ANTENNA_RX,
1541                                                 rx_ant))
1542                                         goto nla_put_failure;
1543                         }
1544                 }
1545
1546                 state->split_start++;
1547                 if (state->split)
1548                         break;
1549         case 2:
1550                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
1551                                         rdev->wiphy.interface_modes))
1552                                 goto nla_put_failure;
1553                 state->split_start++;
1554                 if (state->split)
1555                         break;
1556         case 3:
1557                 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
1558                 if (!nl_bands)
1559                         goto nla_put_failure;
1560
1561                 for (band = state->band_start;
1562                      band < NUM_NL80211_BANDS; band++) {
1563                         struct ieee80211_supported_band *sband;
1564
1565                         sband = rdev->wiphy.bands[band];
1566
1567                         if (!sband)
1568                                 continue;
1569
1570                         nl_band = nla_nest_start(msg, band);
1571                         if (!nl_band)
1572                                 goto nla_put_failure;
1573
1574                         switch (state->chan_start) {
1575                         case 0:
1576                                 if (nl80211_send_band_rateinfo(msg, sband))
1577                                         goto nla_put_failure;
1578                                 state->chan_start++;
1579                                 if (state->split)
1580                                         break;
1581                         default:
1582                                 /* add frequencies */
1583                                 nl_freqs = nla_nest_start(
1584                                         msg, NL80211_BAND_ATTR_FREQS);
1585                                 if (!nl_freqs)
1586                                         goto nla_put_failure;
1587
1588                                 for (i = state->chan_start - 1;
1589                                      i < sband->n_channels;
1590                                      i++) {
1591                                         nl_freq = nla_nest_start(msg, i);
1592                                         if (!nl_freq)
1593                                                 goto nla_put_failure;
1594
1595                                         chan = &sband->channels[i];
1596
1597                                         if (nl80211_msg_put_channel(
1598                                                         msg, chan,
1599                                                         state->split))
1600                                                 goto nla_put_failure;
1601
1602                                         nla_nest_end(msg, nl_freq);
1603                                         if (state->split)
1604                                                 break;
1605                                 }
1606                                 if (i < sband->n_channels)
1607                                         state->chan_start = i + 2;
1608                                 else
1609                                         state->chan_start = 0;
1610                                 nla_nest_end(msg, nl_freqs);
1611                         }
1612
1613                         nla_nest_end(msg, nl_band);
1614
1615                         if (state->split) {
1616                                 /* start again here */
1617                                 if (state->chan_start)
1618                                         band--;
1619                                 break;
1620                         }
1621                 }
1622                 nla_nest_end(msg, nl_bands);
1623
1624                 if (band < NUM_NL80211_BANDS)
1625                         state->band_start = band + 1;
1626                 else
1627                         state->band_start = 0;
1628
1629                 /* if bands & channels are done, continue outside */
1630                 if (state->band_start == 0 && state->chan_start == 0)
1631                         state->split_start++;
1632                 if (state->split)
1633                         break;
1634         case 4:
1635                 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
1636                 if (!nl_cmds)
1637                         goto nla_put_failure;
1638
1639                 i = nl80211_add_commands_unsplit(rdev, msg);
1640                 if (i < 0)
1641                         goto nla_put_failure;
1642                 if (state->split) {
1643                         CMD(crit_proto_start, CRIT_PROTOCOL_START);
1644                         CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
1645                         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
1646                                 CMD(channel_switch, CHANNEL_SWITCH);
1647                         CMD(set_qos_map, SET_QOS_MAP);
1648                         if (rdev->wiphy.features &
1649                                         NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
1650                                 CMD(add_tx_ts, ADD_TX_TS);
1651                         CMD(set_multicast_to_unicast, SET_MULTICAST_TO_UNICAST);
1652                         CMD(update_connect_params, UPDATE_CONNECT_PARAMS);
1653                 }
1654 #undef CMD
1655
1656                 nla_nest_end(msg, nl_cmds);
1657                 state->split_start++;
1658                 if (state->split)
1659                         break;
1660         case 5:
1661                 if (rdev->ops->remain_on_channel &&
1662                     (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
1663                     nla_put_u32(msg,
1664                                 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
1665                                 rdev->wiphy.max_remain_on_channel_duration))
1666                         goto nla_put_failure;
1667
1668                 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
1669                     nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
1670                         goto nla_put_failure;
1671
1672                 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
1673                         goto nla_put_failure;
1674                 state->split_start++;
1675                 if (state->split)
1676                         break;
1677         case 6:
1678 #ifdef CONFIG_PM
1679                 if (nl80211_send_wowlan(msg, rdev, state->split))
1680                         goto nla_put_failure;
1681                 state->split_start++;
1682                 if (state->split)
1683                         break;
1684 #else
1685                 state->split_start++;
1686 #endif
1687         case 7:
1688                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1689                                         rdev->wiphy.software_iftypes))
1690                         goto nla_put_failure;
1691
1692                 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
1693                                                    state->split))
1694                         goto nla_put_failure;
1695
1696                 state->split_start++;
1697                 if (state->split)
1698                         break;
1699         case 8:
1700                 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
1701                     nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
1702                                 rdev->wiphy.ap_sme_capa))
1703                         goto nla_put_failure;
1704
1705                 features = rdev->wiphy.features;
1706                 /*
1707                  * We can only add the per-channel limit information if the
1708                  * dump is split, otherwise it makes it too big. Therefore
1709                  * only advertise it in that case.
1710                  */
1711                 if (state->split)
1712                         features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
1713                 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
1714                         goto nla_put_failure;
1715
1716                 if (rdev->wiphy.ht_capa_mod_mask &&
1717                     nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1718                             sizeof(*rdev->wiphy.ht_capa_mod_mask),
1719                             rdev->wiphy.ht_capa_mod_mask))
1720                         goto nla_put_failure;
1721
1722                 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
1723                     rdev->wiphy.max_acl_mac_addrs &&
1724                     nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
1725                                 rdev->wiphy.max_acl_mac_addrs))
1726                         goto nla_put_failure;
1727
1728                 /*
1729                  * Any information below this point is only available to
1730                  * applications that can deal with it being split. This
1731                  * helps ensure that newly added capabilities don't break
1732                  * older tools by overrunning their buffers.
1733                  *
1734                  * We still increment split_start so that in the split
1735                  * case we'll continue with more data in the next round,
1736                  * but break unconditionally so unsplit data stops here.
1737                  */
1738                 state->split_start++;
1739                 break;
1740         case 9:
1741                 if (rdev->wiphy.extended_capabilities &&
1742                     (nla_put(msg, NL80211_ATTR_EXT_CAPA,
1743                              rdev->wiphy.extended_capabilities_len,
1744                              rdev->wiphy.extended_capabilities) ||
1745                      nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1746                              rdev->wiphy.extended_capabilities_len,
1747                              rdev->wiphy.extended_capabilities_mask)))
1748                         goto nla_put_failure;
1749
1750                 if (rdev->wiphy.vht_capa_mod_mask &&
1751                     nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
1752                             sizeof(*rdev->wiphy.vht_capa_mod_mask),
1753                             rdev->wiphy.vht_capa_mod_mask))
1754                         goto nla_put_failure;
1755
1756                 state->split_start++;
1757                 break;
1758         case 10:
1759                 if (nl80211_send_coalesce(msg, rdev))
1760                         goto nla_put_failure;
1761
1762                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
1763                     (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
1764                      nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
1765                         goto nla_put_failure;
1766
1767                 if (rdev->wiphy.max_ap_assoc_sta &&
1768                     nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
1769                                 rdev->wiphy.max_ap_assoc_sta))
1770                         goto nla_put_failure;
1771
1772                 state->split_start++;
1773                 break;
1774         case 11:
1775                 if (rdev->wiphy.n_vendor_commands) {
1776                         const struct nl80211_vendor_cmd_info *info;
1777                         struct nlattr *nested;
1778
1779                         nested = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA);
1780                         if (!nested)
1781                                 goto nla_put_failure;
1782
1783                         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
1784                                 info = &rdev->wiphy.vendor_commands[i].info;
1785                                 if (nla_put(msg, i + 1, sizeof(*info), info))
1786                                         goto nla_put_failure;
1787                         }
1788                         nla_nest_end(msg, nested);
1789                 }
1790
1791                 if (rdev->wiphy.n_vendor_events) {
1792                         const struct nl80211_vendor_cmd_info *info;
1793                         struct nlattr *nested;
1794
1795                         nested = nla_nest_start(msg,
1796                                                 NL80211_ATTR_VENDOR_EVENTS);
1797                         if (!nested)
1798                                 goto nla_put_failure;
1799
1800                         for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
1801                                 info = &rdev->wiphy.vendor_events[i];
1802                                 if (nla_put(msg, i + 1, sizeof(*info), info))
1803                                         goto nla_put_failure;
1804                         }
1805                         nla_nest_end(msg, nested);
1806                 }
1807                 state->split_start++;
1808                 break;
1809         case 12:
1810                 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
1811                     nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
1812                                rdev->wiphy.max_num_csa_counters))
1813                         goto nla_put_failure;
1814
1815                 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
1816                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
1817                         goto nla_put_failure;
1818
1819                 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
1820                             sizeof(rdev->wiphy.ext_features),
1821                             rdev->wiphy.ext_features))
1822                         goto nla_put_failure;
1823
1824                 if (rdev->wiphy.bss_select_support) {
1825                         struct nlattr *nested;
1826                         u32 bss_select_support = rdev->wiphy.bss_select_support;
1827
1828                         nested = nla_nest_start(msg, NL80211_ATTR_BSS_SELECT);
1829                         if (!nested)
1830                                 goto nla_put_failure;
1831
1832                         i = 0;
1833                         while (bss_select_support) {
1834                                 if ((bss_select_support & 1) &&
1835                                     nla_put_flag(msg, i))
1836                                         goto nla_put_failure;
1837                                 i++;
1838                                 bss_select_support >>= 1;
1839                         }
1840                         nla_nest_end(msg, nested);
1841                 }
1842
1843                 state->split_start++;
1844                 break;
1845         case 13:
1846                 if (rdev->wiphy.num_iftype_ext_capab &&
1847                     rdev->wiphy.iftype_ext_capab) {
1848                         struct nlattr *nested_ext_capab, *nested;
1849
1850                         nested = nla_nest_start(msg,
1851                                                 NL80211_ATTR_IFTYPE_EXT_CAPA);
1852                         if (!nested)
1853                                 goto nla_put_failure;
1854
1855                         for (i = state->capa_start;
1856                              i < rdev->wiphy.num_iftype_ext_capab; i++) {
1857                                 const struct wiphy_iftype_ext_capab *capab;
1858
1859                                 capab = &rdev->wiphy.iftype_ext_capab[i];
1860
1861                                 nested_ext_capab = nla_nest_start(msg, i);
1862                                 if (!nested_ext_capab ||
1863                                     nla_put_u32(msg, NL80211_ATTR_IFTYPE,
1864                                                 capab->iftype) ||
1865                                     nla_put(msg, NL80211_ATTR_EXT_CAPA,
1866                                             capab->extended_capabilities_len,
1867                                             capab->extended_capabilities) ||
1868                                     nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1869                                             capab->extended_capabilities_len,
1870                                             capab->extended_capabilities_mask))
1871                                         goto nla_put_failure;
1872
1873                                 nla_nest_end(msg, nested_ext_capab);
1874                                 if (state->split)
1875                                         break;
1876                         }
1877                         nla_nest_end(msg, nested);
1878                         if (i < rdev->wiphy.num_iftype_ext_capab) {
1879                                 state->capa_start = i + 1;
1880                                 break;
1881                         }
1882                 }
1883
1884                 /* done */
1885                 state->split_start = 0;
1886                 break;
1887         }
1888  finish:
1889         genlmsg_end(msg, hdr);
1890         return 0;
1891
1892  nla_put_failure:
1893         genlmsg_cancel(msg, hdr);
1894         return -EMSGSIZE;
1895 }
1896
1897 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
1898                                     struct netlink_callback *cb,
1899                                     struct nl80211_dump_wiphy_state *state)
1900 {
1901         struct nlattr **tb = genl_family_attrbuf(&nl80211_fam);
1902         int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
1903                               tb, nl80211_fam.maxattr, nl80211_policy);
1904         /* ignore parse errors for backward compatibility */
1905         if (ret)
1906                 return 0;
1907
1908         state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
1909         if (tb[NL80211_ATTR_WIPHY])
1910                 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
1911         if (tb[NL80211_ATTR_WDEV])
1912                 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
1913         if (tb[NL80211_ATTR_IFINDEX]) {
1914                 struct net_device *netdev;
1915                 struct cfg80211_registered_device *rdev;
1916                 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
1917
1918                 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
1919                 if (!netdev)
1920                         return -ENODEV;
1921                 if (netdev->ieee80211_ptr) {
1922                         rdev = wiphy_to_rdev(
1923                                 netdev->ieee80211_ptr->wiphy);
1924                         state->filter_wiphy = rdev->wiphy_idx;
1925                 }
1926         }
1927
1928         return 0;
1929 }
1930
1931 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1932 {
1933         int idx = 0, ret;
1934         struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
1935         struct cfg80211_registered_device *rdev;
1936
1937         rtnl_lock();
1938         if (!state) {
1939                 state = kzalloc(sizeof(*state), GFP_KERNEL);
1940                 if (!state) {
1941                         rtnl_unlock();
1942                         return -ENOMEM;
1943                 }
1944                 state->filter_wiphy = -1;
1945                 ret = nl80211_dump_wiphy_parse(skb, cb, state);
1946                 if (ret) {
1947                         kfree(state);
1948                         rtnl_unlock();
1949                         return ret;
1950                 }
1951                 cb->args[0] = (long)state;
1952         }
1953
1954         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
1955                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
1956                         continue;
1957                 if (++idx <= state->start)
1958                         continue;
1959                 if (state->filter_wiphy != -1 &&
1960                     state->filter_wiphy != rdev->wiphy_idx)
1961                         continue;
1962                 /* attempt to fit multiple wiphy data chunks into the skb */
1963                 do {
1964                         ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
1965                                                  skb,
1966                                                  NETLINK_CB(cb->skb).portid,
1967                                                  cb->nlh->nlmsg_seq,
1968                                                  NLM_F_MULTI, state);
1969                         if (ret < 0) {
1970                                 /*
1971                                  * If sending the wiphy data didn't fit (ENOBUFS
1972                                  * or EMSGSIZE returned), this SKB is still
1973                                  * empty (so it's not too big because another
1974                                  * wiphy dataset is already in the skb) and
1975                                  * we've not tried to adjust the dump allocation
1976                                  * yet ... then adjust the alloc size to be
1977                                  * bigger, and return 1 but with the empty skb.
1978                                  * This results in an empty message being RX'ed
1979                                  * in userspace, but that is ignored.
1980                                  *
1981                                  * We can then retry with the larger buffer.
1982                                  */
1983                                 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
1984                                     !skb->len && !state->split &&
1985                                     cb->min_dump_alloc < 4096) {
1986                                         cb->min_dump_alloc = 4096;
1987                                         state->split_start = 0;
1988                                         rtnl_unlock();
1989                                         return 1;
1990                                 }
1991                                 idx--;
1992                                 break;
1993                         }
1994                 } while (state->split_start > 0);
1995                 break;
1996         }
1997         rtnl_unlock();
1998
1999         state->start = idx;
2000
2001         return skb->len;
2002 }
2003
2004 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
2005 {
2006         kfree((void *)cb->args[0]);
2007         return 0;
2008 }
2009
2010 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
2011 {
2012         struct sk_buff *msg;
2013         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2014         struct nl80211_dump_wiphy_state state = {};
2015
2016         msg = nlmsg_new(4096, GFP_KERNEL);
2017         if (!msg)
2018                 return -ENOMEM;
2019
2020         if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
2021                                info->snd_portid, info->snd_seq, 0,
2022                                &state) < 0) {
2023                 nlmsg_free(msg);
2024                 return -ENOBUFS;
2025         }
2026
2027         return genlmsg_reply(msg, info);
2028 }
2029
2030 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
2031         [NL80211_TXQ_ATTR_QUEUE]                = { .type = NLA_U8 },
2032         [NL80211_TXQ_ATTR_TXOP]                 = { .type = NLA_U16 },
2033         [NL80211_TXQ_ATTR_CWMIN]                = { .type = NLA_U16 },
2034         [NL80211_TXQ_ATTR_CWMAX]                = { .type = NLA_U16 },
2035         [NL80211_TXQ_ATTR_AIFS]                 = { .type = NLA_U8 },
2036 };
2037
2038 static int parse_txq_params(struct nlattr *tb[],
2039                             struct ieee80211_txq_params *txq_params)
2040 {
2041         if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
2042             !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
2043             !tb[NL80211_TXQ_ATTR_AIFS])
2044                 return -EINVAL;
2045
2046         txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
2047         txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
2048         txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
2049         txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
2050         txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
2051
2052         if (txq_params->ac >= NL80211_NUM_ACS)
2053                 return -EINVAL;
2054
2055         return 0;
2056 }
2057
2058 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
2059 {
2060         /*
2061          * You can only set the channel explicitly for WDS interfaces,
2062          * all others have their channel managed via their respective
2063          * "establish a connection" command (connect, join, ...)
2064          *
2065          * For AP/GO and mesh mode, the channel can be set with the
2066          * channel userspace API, but is only stored and passed to the
2067          * low-level driver when the AP starts or the mesh is joined.
2068          * This is for backward compatibility, userspace can also give
2069          * the channel in the start-ap or join-mesh commands instead.
2070          *
2071          * Monitors are special as they are normally slaved to
2072          * whatever else is going on, so they have their own special
2073          * operation to set the monitor channel if possible.
2074          */
2075         return !wdev ||
2076                 wdev->iftype == NL80211_IFTYPE_AP ||
2077                 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
2078                 wdev->iftype == NL80211_IFTYPE_MONITOR ||
2079                 wdev->iftype == NL80211_IFTYPE_P2P_GO;
2080 }
2081
2082 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
2083                                  struct genl_info *info,
2084                                  struct cfg80211_chan_def *chandef)
2085 {
2086         u32 control_freq;
2087
2088         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
2089                 return -EINVAL;
2090
2091         control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
2092
2093         chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
2094         chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
2095         chandef->center_freq1 = control_freq;
2096         chandef->center_freq2 = 0;
2097
2098         /* Primary channel not allowed */
2099         if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED)
2100                 return -EINVAL;
2101
2102         if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
2103                 enum nl80211_channel_type chantype;
2104
2105                 chantype = nla_get_u32(
2106                                 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
2107
2108                 switch (chantype) {
2109                 case NL80211_CHAN_NO_HT:
2110                 case NL80211_CHAN_HT20:
2111                 case NL80211_CHAN_HT40PLUS:
2112                 case NL80211_CHAN_HT40MINUS:
2113                         cfg80211_chandef_create(chandef, chandef->chan,
2114                                                 chantype);
2115                         break;
2116                 default:
2117                         return -EINVAL;
2118                 }
2119         } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
2120                 chandef->width =
2121                         nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]);
2122                 if (info->attrs[NL80211_ATTR_CENTER_FREQ1])
2123                         chandef->center_freq1 =
2124                                 nla_get_u32(
2125                                         info->attrs[NL80211_ATTR_CENTER_FREQ1]);
2126                 if (info->attrs[NL80211_ATTR_CENTER_FREQ2])
2127                         chandef->center_freq2 =
2128                                 nla_get_u32(
2129                                         info->attrs[NL80211_ATTR_CENTER_FREQ2]);
2130         }
2131
2132         if (!cfg80211_chandef_valid(chandef))
2133                 return -EINVAL;
2134
2135         if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
2136                                      IEEE80211_CHAN_DISABLED))
2137                 return -EINVAL;
2138
2139         if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
2140              chandef->width == NL80211_CHAN_WIDTH_10) &&
2141             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ))
2142                 return -EINVAL;
2143
2144         return 0;
2145 }
2146
2147 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
2148                                  struct net_device *dev,
2149                                  struct genl_info *info)
2150 {
2151         struct cfg80211_chan_def chandef;
2152         int result;
2153         enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
2154         struct wireless_dev *wdev = NULL;
2155
2156         if (dev)
2157                 wdev = dev->ieee80211_ptr;
2158         if (!nl80211_can_set_dev_channel(wdev))
2159                 return -EOPNOTSUPP;
2160         if (wdev)
2161                 iftype = wdev->iftype;
2162
2163         result = nl80211_parse_chandef(rdev, info, &chandef);
2164         if (result)
2165                 return result;
2166
2167         switch (iftype) {
2168         case NL80211_IFTYPE_AP:
2169         case NL80211_IFTYPE_P2P_GO:
2170                 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
2171                                                    iftype)) {
2172                         result = -EINVAL;
2173                         break;
2174                 }
2175                 if (wdev->beacon_interval) {
2176                         if (!dev || !rdev->ops->set_ap_chanwidth ||
2177                             !(rdev->wiphy.features &
2178                               NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
2179                                 result = -EBUSY;
2180                                 break;
2181                         }
2182
2183                         /* Only allow dynamic channel width changes */
2184                         if (chandef.chan != wdev->preset_chandef.chan) {
2185                                 result = -EBUSY;
2186                                 break;
2187                         }
2188                         result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
2189                         if (result)
2190                                 break;
2191                 }
2192                 wdev->preset_chandef = chandef;
2193                 result = 0;
2194                 break;
2195         case NL80211_IFTYPE_MESH_POINT:
2196                 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
2197                 break;
2198         case NL80211_IFTYPE_MONITOR:
2199                 result = cfg80211_set_monitor_channel(rdev, &chandef);
2200                 break;
2201         default:
2202                 result = -EINVAL;
2203         }
2204
2205         return result;
2206 }
2207
2208 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
2209 {
2210         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2211         struct net_device *netdev = info->user_ptr[1];
2212
2213         return __nl80211_set_channel(rdev, netdev, info);
2214 }
2215
2216 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
2217 {
2218         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2219         struct net_device *dev = info->user_ptr[1];
2220         struct wireless_dev *wdev = dev->ieee80211_ptr;
2221         const u8 *bssid;
2222
2223         if (!info->attrs[NL80211_ATTR_MAC])
2224                 return -EINVAL;
2225
2226         if (netif_running(dev))
2227                 return -EBUSY;
2228
2229         if (!rdev->ops->set_wds_peer)
2230                 return -EOPNOTSUPP;
2231
2232         if (wdev->iftype != NL80211_IFTYPE_WDS)
2233                 return -EOPNOTSUPP;
2234
2235         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
2236         return rdev_set_wds_peer(rdev, dev, bssid);
2237 }
2238
2239 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
2240 {
2241         struct cfg80211_registered_device *rdev;
2242         struct net_device *netdev = NULL;
2243         struct wireless_dev *wdev;
2244         int result = 0, rem_txq_params = 0;
2245         struct nlattr *nl_txq_params;
2246         u32 changed;
2247         u8 retry_short = 0, retry_long = 0;
2248         u32 frag_threshold = 0, rts_threshold = 0;
2249         u8 coverage_class = 0;
2250
2251         ASSERT_RTNL();
2252
2253         /*
2254          * Try to find the wiphy and netdev. Normally this
2255          * function shouldn't need the netdev, but this is
2256          * done for backward compatibility -- previously
2257          * setting the channel was done per wiphy, but now
2258          * it is per netdev. Previous userland like hostapd
2259          * also passed a netdev to set_wiphy, so that it is
2260          * possible to let that go to the right netdev!
2261          */
2262
2263         if (info->attrs[NL80211_ATTR_IFINDEX]) {
2264                 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
2265
2266                 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
2267                 if (netdev && netdev->ieee80211_ptr)
2268                         rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
2269                 else
2270                         netdev = NULL;
2271         }
2272
2273         if (!netdev) {
2274                 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
2275                                                   info->attrs);
2276                 if (IS_ERR(rdev))
2277                         return PTR_ERR(rdev);
2278                 wdev = NULL;
2279                 netdev = NULL;
2280                 result = 0;
2281         } else
2282                 wdev = netdev->ieee80211_ptr;
2283
2284         /*
2285          * end workaround code, by now the rdev is available
2286          * and locked, and wdev may or may not be NULL.
2287          */
2288
2289         if (info->attrs[NL80211_ATTR_WIPHY_NAME])
2290                 result = cfg80211_dev_rename(
2291                         rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
2292
2293         if (result)
2294                 return result;
2295
2296         if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
2297                 struct ieee80211_txq_params txq_params;
2298                 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
2299
2300                 if (!rdev->ops->set_txq_params)
2301                         return -EOPNOTSUPP;
2302
2303                 if (!netdev)
2304                         return -EINVAL;
2305
2306                 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2307                     netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2308                         return -EINVAL;
2309
2310                 if (!netif_running(netdev))
2311                         return -ENETDOWN;
2312
2313                 nla_for_each_nested(nl_txq_params,
2314                                     info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
2315                                     rem_txq_params) {
2316                         result = nla_parse_nested(tb, NL80211_TXQ_ATTR_MAX,
2317                                                   nl_txq_params,
2318                                                   txq_params_policy);
2319                         if (result)
2320                                 return result;
2321                         result = parse_txq_params(tb, &txq_params);
2322                         if (result)
2323                                 return result;
2324
2325                         result = rdev_set_txq_params(rdev, netdev,
2326                                                      &txq_params);
2327                         if (result)
2328                                 return result;
2329                 }
2330         }
2331
2332         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
2333                 result = __nl80211_set_channel(
2334                         rdev,
2335                         nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
2336                         info);
2337                 if (result)
2338                         return result;
2339         }
2340
2341         if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
2342                 struct wireless_dev *txp_wdev = wdev;
2343                 enum nl80211_tx_power_setting type;
2344                 int idx, mbm = 0;
2345
2346                 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
2347                         txp_wdev = NULL;
2348
2349                 if (!rdev->ops->set_tx_power)
2350                         return -EOPNOTSUPP;
2351
2352                 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
2353                 type = nla_get_u32(info->attrs[idx]);
2354
2355                 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
2356                     (type != NL80211_TX_POWER_AUTOMATIC))
2357                         return -EINVAL;
2358
2359                 if (type != NL80211_TX_POWER_AUTOMATIC) {
2360                         idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
2361                         mbm = nla_get_u32(info->attrs[idx]);
2362                 }
2363
2364                 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
2365                 if (result)
2366                         return result;
2367         }
2368
2369         if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
2370             info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
2371                 u32 tx_ant, rx_ant;
2372
2373                 if ((!rdev->wiphy.available_antennas_tx &&
2374                      !rdev->wiphy.available_antennas_rx) ||
2375                     !rdev->ops->set_antenna)
2376                         return -EOPNOTSUPP;
2377
2378                 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
2379                 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
2380
2381                 /* reject antenna configurations which don't match the
2382                  * available antenna masks, except for the "all" mask */
2383                 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
2384                     (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx)))
2385                         return -EINVAL;
2386
2387                 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
2388                 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
2389
2390                 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
2391                 if (result)
2392                         return result;
2393         }
2394
2395         changed = 0;
2396
2397         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
2398                 retry_short = nla_get_u8(
2399                         info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
2400                 if (retry_short == 0)
2401                         return -EINVAL;
2402
2403                 changed |= WIPHY_PARAM_RETRY_SHORT;
2404         }
2405
2406         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
2407                 retry_long = nla_get_u8(
2408                         info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
2409                 if (retry_long == 0)
2410                         return -EINVAL;
2411
2412                 changed |= WIPHY_PARAM_RETRY_LONG;
2413         }
2414
2415         if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
2416                 frag_threshold = nla_get_u32(
2417                         info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
2418                 if (frag_threshold < 256)
2419                         return -EINVAL;
2420
2421                 if (frag_threshold != (u32) -1) {
2422                         /*
2423                          * Fragments (apart from the last one) are required to
2424                          * have even length. Make the fragmentation code
2425                          * simpler by stripping LSB should someone try to use
2426                          * odd threshold value.
2427                          */
2428                         frag_threshold &= ~0x1;
2429                 }
2430                 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
2431         }
2432
2433         if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
2434                 rts_threshold = nla_get_u32(
2435                         info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
2436                 changed |= WIPHY_PARAM_RTS_THRESHOLD;
2437         }
2438
2439         if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
2440                 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK])
2441                         return -EINVAL;
2442
2443                 coverage_class = nla_get_u8(
2444                         info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
2445                 changed |= WIPHY_PARAM_COVERAGE_CLASS;
2446         }
2447
2448         if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
2449                 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION))
2450                         return -EOPNOTSUPP;
2451
2452                 changed |= WIPHY_PARAM_DYN_ACK;
2453         }
2454
2455         if (changed) {
2456                 u8 old_retry_short, old_retry_long;
2457                 u32 old_frag_threshold, old_rts_threshold;
2458                 u8 old_coverage_class;
2459
2460                 if (!rdev->ops->set_wiphy_params)
2461                         return -EOPNOTSUPP;
2462
2463                 old_retry_short = rdev->wiphy.retry_short;
2464                 old_retry_long = rdev->wiphy.retry_long;
2465                 old_frag_threshold = rdev->wiphy.frag_threshold;
2466                 old_rts_threshold = rdev->wiphy.rts_threshold;
2467                 old_coverage_class = rdev->wiphy.coverage_class;
2468
2469                 if (changed & WIPHY_PARAM_RETRY_SHORT)
2470                         rdev->wiphy.retry_short = retry_short;
2471                 if (changed & WIPHY_PARAM_RETRY_LONG)
2472                         rdev->wiphy.retry_long = retry_long;
2473                 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
2474                         rdev->wiphy.frag_threshold = frag_threshold;
2475                 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
2476                         rdev->wiphy.rts_threshold = rts_threshold;
2477                 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
2478                         rdev->wiphy.coverage_class = coverage_class;
2479
2480                 result = rdev_set_wiphy_params(rdev, changed);
2481                 if (result) {
2482                         rdev->wiphy.retry_short = old_retry_short;
2483                         rdev->wiphy.retry_long = old_retry_long;
2484                         rdev->wiphy.frag_threshold = old_frag_threshold;
2485                         rdev->wiphy.rts_threshold = old_rts_threshold;
2486                         rdev->wiphy.coverage_class = old_coverage_class;
2487                         return result;
2488                 }
2489         }
2490         return 0;
2491 }
2492
2493 static inline u64 wdev_id(struct wireless_dev *wdev)
2494 {
2495         return (u64)wdev->identifier |
2496                ((u64)wiphy_to_rdev(wdev->wiphy)->wiphy_idx << 32);
2497 }
2498
2499 static int nl80211_send_chandef(struct sk_buff *msg,
2500                                 const struct cfg80211_chan_def *chandef)
2501 {
2502         if (WARN_ON(!cfg80211_chandef_valid(chandef)))
2503                 return -EINVAL;
2504
2505         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
2506                         chandef->chan->center_freq))
2507                 return -ENOBUFS;
2508         switch (chandef->width) {
2509         case NL80211_CHAN_WIDTH_20_NOHT:
2510         case NL80211_CHAN_WIDTH_20:
2511         case NL80211_CHAN_WIDTH_40:
2512                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2513                                 cfg80211_get_chandef_type(chandef)))
2514                         return -ENOBUFS;
2515                 break;
2516         default:
2517                 break;
2518         }
2519         if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
2520                 return -ENOBUFS;
2521         if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
2522                 return -ENOBUFS;
2523         if (chandef->center_freq2 &&
2524             nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
2525                 return -ENOBUFS;
2526         return 0;
2527 }
2528
2529 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
2530                               struct cfg80211_registered_device *rdev,
2531                               struct wireless_dev *wdev, bool removal)
2532 {
2533         struct net_device *dev = wdev->netdev;
2534         u8 cmd = NL80211_CMD_NEW_INTERFACE;
2535         void *hdr;
2536
2537         if (removal)
2538                 cmd = NL80211_CMD_DEL_INTERFACE;
2539
2540         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
2541         if (!hdr)
2542                 return -1;
2543
2544         if (dev &&
2545             (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2546              nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
2547                 goto nla_put_failure;
2548
2549         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2550             nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
2551             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
2552                               NL80211_ATTR_PAD) ||
2553             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
2554             nla_put_u32(msg, NL80211_ATTR_GENERATION,
2555                         rdev->devlist_generation ^
2556                         (cfg80211_rdev_list_generation << 2)))
2557                 goto nla_put_failure;
2558
2559         if (rdev->ops->get_channel) {
2560                 int ret;
2561                 struct cfg80211_chan_def chandef;
2562
2563                 ret = rdev_get_channel(rdev, wdev, &chandef);
2564                 if (ret == 0) {
2565                         if (nl80211_send_chandef(msg, &chandef))
2566                                 goto nla_put_failure;
2567                 }
2568         }
2569
2570         if (rdev->ops->get_tx_power) {
2571                 int dbm, ret;
2572
2573                 ret = rdev_get_tx_power(rdev, wdev, &dbm);
2574                 if (ret == 0 &&
2575                     nla_put_u32(msg, NL80211_ATTR_WIPHY_TX_POWER_LEVEL,
2576                                 DBM_TO_MBM(dbm)))
2577                         goto nla_put_failure;
2578         }
2579
2580         if (wdev->ssid_len) {
2581                 if (nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
2582                         goto nla_put_failure;
2583         }
2584
2585         genlmsg_end(msg, hdr);
2586         return 0;
2587
2588  nla_put_failure:
2589         genlmsg_cancel(msg, hdr);
2590         return -EMSGSIZE;
2591 }
2592
2593 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
2594 {
2595         int wp_idx = 0;
2596         int if_idx = 0;
2597         int wp_start = cb->args[0];
2598         int if_start = cb->args[1];
2599         int filter_wiphy = -1;
2600         struct cfg80211_registered_device *rdev;
2601         struct wireless_dev *wdev;
2602
2603         rtnl_lock();
2604         if (!cb->args[2]) {
2605                 struct nl80211_dump_wiphy_state state = {
2606                         .filter_wiphy = -1,
2607                 };
2608                 int ret;
2609
2610                 ret = nl80211_dump_wiphy_parse(skb, cb, &state);
2611                 if (ret)
2612                         return ret;
2613
2614                 filter_wiphy = state.filter_wiphy;
2615
2616                 /*
2617                  * if filtering, set cb->args[2] to +1 since 0 is the default
2618                  * value needed to determine that parsing is necessary.
2619                  */
2620                 if (filter_wiphy >= 0)
2621                         cb->args[2] = filter_wiphy + 1;
2622                 else
2623                         cb->args[2] = -1;
2624         } else if (cb->args[2] > 0) {
2625                 filter_wiphy = cb->args[2] - 1;
2626         }
2627
2628         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2629                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2630                         continue;
2631                 if (wp_idx < wp_start) {
2632                         wp_idx++;
2633                         continue;
2634                 }
2635
2636                 if (filter_wiphy >= 0 && filter_wiphy != rdev->wiphy_idx)
2637                         continue;
2638
2639                 if_idx = 0;
2640
2641                 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
2642                         if (if_idx < if_start) {
2643                                 if_idx++;
2644                                 continue;
2645                         }
2646                         if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
2647                                                cb->nlh->nlmsg_seq, NLM_F_MULTI,
2648                                                rdev, wdev, false) < 0) {
2649                                 goto out;
2650                         }
2651                         if_idx++;
2652                 }
2653
2654                 wp_idx++;
2655         }
2656  out:
2657         rtnl_unlock();
2658
2659         cb->args[0] = wp_idx;
2660         cb->args[1] = if_idx;
2661
2662         return skb->len;
2663 }
2664
2665 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
2666 {
2667         struct sk_buff *msg;
2668         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2669         struct wireless_dev *wdev = info->user_ptr[1];
2670
2671         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2672         if (!msg)
2673                 return -ENOMEM;
2674
2675         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2676                                rdev, wdev, false) < 0) {
2677                 nlmsg_free(msg);
2678                 return -ENOBUFS;
2679         }
2680
2681         return genlmsg_reply(msg, info);
2682 }
2683
2684 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
2685         [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
2686         [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
2687         [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
2688         [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
2689         [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
2690         [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
2691 };
2692
2693 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
2694 {
2695         struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
2696         int flag;
2697
2698         *mntrflags = 0;
2699
2700         if (!nla)
2701                 return -EINVAL;
2702
2703         if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
2704                              nla, mntr_flags_policy))
2705                 return -EINVAL;
2706
2707         for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
2708                 if (flags[flag])
2709                         *mntrflags |= (1<<flag);
2710
2711         return 0;
2712 }
2713
2714 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
2715                                struct net_device *netdev, u8 use_4addr,
2716                                enum nl80211_iftype iftype)
2717 {
2718         if (!use_4addr) {
2719                 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
2720                         return -EBUSY;
2721                 return 0;
2722         }
2723
2724         switch (iftype) {
2725         case NL80211_IFTYPE_AP_VLAN:
2726                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
2727                         return 0;
2728                 break;
2729         case NL80211_IFTYPE_STATION:
2730                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
2731                         return 0;
2732                 break;
2733         default:
2734                 break;
2735         }
2736
2737         return -EOPNOTSUPP;
2738 }
2739
2740 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
2741 {
2742         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2743         struct vif_params params;
2744         int err;
2745         enum nl80211_iftype otype, ntype;
2746         struct net_device *dev = info->user_ptr[1];
2747         u32 _flags, *flags = NULL;
2748         bool change = false;
2749
2750         memset(&params, 0, sizeof(params));
2751
2752         otype = ntype = dev->ieee80211_ptr->iftype;
2753
2754         if (info->attrs[NL80211_ATTR_IFTYPE]) {
2755                 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2756                 if (otype != ntype)
2757                         change = true;
2758                 if (ntype > NL80211_IFTYPE_MAX)
2759                         return -EINVAL;
2760         }
2761
2762         if (info->attrs[NL80211_ATTR_MESH_ID]) {
2763                 struct wireless_dev *wdev = dev->ieee80211_ptr;
2764
2765                 if (ntype != NL80211_IFTYPE_MESH_POINT)
2766                         return -EINVAL;
2767                 if (netif_running(dev))
2768                         return -EBUSY;
2769
2770                 wdev_lock(wdev);
2771                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2772                              IEEE80211_MAX_MESH_ID_LEN);
2773                 wdev->mesh_id_up_len =
2774                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2775                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2776                        wdev->mesh_id_up_len);
2777                 wdev_unlock(wdev);
2778         }
2779
2780         if (info->attrs[NL80211_ATTR_4ADDR]) {
2781                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2782                 change = true;
2783                 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
2784                 if (err)
2785                         return err;
2786         } else {
2787                 params.use_4addr = -1;
2788         }
2789
2790         if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
2791                 if (ntype != NL80211_IFTYPE_MONITOR)
2792                         return -EINVAL;
2793                 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
2794                                           &_flags);
2795                 if (err)
2796                         return err;
2797
2798                 flags = &_flags;
2799                 change = true;
2800         }
2801
2802         if (info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]) {
2803                 const u8 *mumimo_groups;
2804                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
2805
2806                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
2807                         return -EOPNOTSUPP;
2808
2809                 mumimo_groups =
2810                         nla_data(info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]);
2811
2812                 /* bits 0 and 63 are reserved and must be zero */
2813                 if ((mumimo_groups[0] & BIT(7)) ||
2814                     (mumimo_groups[VHT_MUMIMO_GROUPS_DATA_LEN - 1] & BIT(0)))
2815                         return -EINVAL;
2816
2817                 memcpy(params.vht_mumimo_groups, mumimo_groups,
2818                        VHT_MUMIMO_GROUPS_DATA_LEN);
2819                 change = true;
2820         }
2821
2822         if (info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]) {
2823                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
2824
2825                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
2826                         return -EOPNOTSUPP;
2827
2828                 nla_memcpy(params.macaddr,
2829                            info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR],
2830                            ETH_ALEN);
2831                 change = true;
2832         }
2833
2834         if (flags && (*flags & MONITOR_FLAG_ACTIVE) &&
2835             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2836                 return -EOPNOTSUPP;
2837
2838         if (change)
2839                 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
2840         else
2841                 err = 0;
2842
2843         if (!err && params.use_4addr != -1)
2844                 dev->ieee80211_ptr->use_4addr = params.use_4addr;
2845
2846         return err;
2847 }
2848
2849 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
2850 {
2851         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2852         struct vif_params params;
2853         struct wireless_dev *wdev;
2854         struct sk_buff *msg;
2855         int err;
2856         enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
2857         u32 flags;
2858
2859         /* to avoid failing a new interface creation due to pending removal */
2860         cfg80211_destroy_ifaces(rdev);
2861
2862         memset(&params, 0, sizeof(params));
2863
2864         if (!info->attrs[NL80211_ATTR_IFNAME])
2865                 return -EINVAL;
2866
2867         if (info->attrs[NL80211_ATTR_IFTYPE]) {
2868                 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2869                 if (type > NL80211_IFTYPE_MAX)
2870                         return -EINVAL;
2871         }
2872
2873         if (!rdev->ops->add_virtual_intf ||
2874             !(rdev->wiphy.interface_modes & (1 << type)))
2875                 return -EOPNOTSUPP;
2876
2877         if ((type == NL80211_IFTYPE_P2P_DEVICE || type == NL80211_IFTYPE_NAN ||
2878              rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
2879             info->attrs[NL80211_ATTR_MAC]) {
2880                 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
2881                            ETH_ALEN);
2882                 if (!is_valid_ether_addr(params.macaddr))
2883                         return -EADDRNOTAVAIL;
2884         }
2885
2886         if (info->attrs[NL80211_ATTR_4ADDR]) {
2887                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2888                 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
2889                 if (err)
2890                         return err;
2891         }
2892
2893         err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
2894                                   info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
2895                                   &flags);
2896
2897         if (!err && (flags & MONITOR_FLAG_ACTIVE) &&
2898             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2899                 return -EOPNOTSUPP;
2900
2901         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2902         if (!msg)
2903                 return -ENOMEM;
2904
2905         wdev = rdev_add_virtual_intf(rdev,
2906                                 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
2907                                 NET_NAME_USER, type, err ? NULL : &flags,
2908                                 &params);
2909         if (WARN_ON(!wdev)) {
2910                 nlmsg_free(msg);
2911                 return -EPROTO;
2912         } else if (IS_ERR(wdev)) {
2913                 nlmsg_free(msg);
2914                 return PTR_ERR(wdev);
2915         }
2916
2917         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
2918                 wdev->owner_nlportid = info->snd_portid;
2919
2920         switch (type) {
2921         case NL80211_IFTYPE_MESH_POINT:
2922                 if (!info->attrs[NL80211_ATTR_MESH_ID])
2923                         break;
2924                 wdev_lock(wdev);
2925                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2926                              IEEE80211_MAX_MESH_ID_LEN);
2927                 wdev->mesh_id_up_len =
2928                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2929                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2930                        wdev->mesh_id_up_len);
2931                 wdev_unlock(wdev);
2932                 break;
2933         case NL80211_IFTYPE_NAN:
2934         case NL80211_IFTYPE_P2P_DEVICE:
2935                 /*
2936                  * P2P Device and NAN do not have a netdev, so don't go
2937                  * through the netdev notifier and must be added here
2938                  */
2939                 mutex_init(&wdev->mtx);
2940                 INIT_LIST_HEAD(&wdev->event_list);
2941                 spin_lock_init(&wdev->event_lock);
2942                 INIT_LIST_HEAD(&wdev->mgmt_registrations);
2943                 spin_lock_init(&wdev->mgmt_registrations_lock);
2944
2945                 wdev->identifier = ++rdev->wdev_id;
2946                 list_add_rcu(&wdev->list, &rdev->wiphy.wdev_list);
2947                 rdev->devlist_generation++;
2948                 break;
2949         default:
2950                 break;
2951         }
2952
2953         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2954                                rdev, wdev, false) < 0) {
2955                 nlmsg_free(msg);
2956                 return -ENOBUFS;
2957         }
2958
2959         /*
2960          * For wdevs which have no associated netdev object (e.g. of type
2961          * NL80211_IFTYPE_P2P_DEVICE), emit the NEW_INTERFACE event here.
2962          * For all other types, the event will be generated from the
2963          * netdev notifier
2964          */
2965         if (!wdev->netdev)
2966                 nl80211_notify_iface(rdev, wdev, NL80211_CMD_NEW_INTERFACE);
2967
2968         return genlmsg_reply(msg, info);
2969 }
2970
2971 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
2972 {
2973         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2974         struct wireless_dev *wdev = info->user_ptr[1];
2975
2976         if (!rdev->ops->del_virtual_intf)
2977                 return -EOPNOTSUPP;
2978
2979         /*
2980          * If we remove a wireless device without a netdev then clear
2981          * user_ptr[1] so that nl80211_post_doit won't dereference it
2982          * to check if it needs to do dev_put(). Otherwise it crashes
2983          * since the wdev has been freed, unlike with a netdev where
2984          * we need the dev_put() for the netdev to really be freed.
2985          */
2986         if (!wdev->netdev)
2987                 info->user_ptr[1] = NULL;
2988
2989         return rdev_del_virtual_intf(rdev, wdev);
2990 }
2991
2992 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
2993 {
2994         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2995         struct net_device *dev = info->user_ptr[1];
2996         u16 noack_map;
2997
2998         if (!info->attrs[NL80211_ATTR_NOACK_MAP])
2999                 return -EINVAL;
3000
3001         if (!rdev->ops->set_noack_map)
3002                 return -EOPNOTSUPP;
3003
3004         noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
3005
3006         return rdev_set_noack_map(rdev, dev, noack_map);
3007 }
3008
3009 struct get_key_cookie {
3010         struct sk_buff *msg;
3011         int error;
3012         int idx;
3013 };
3014
3015 static void get_key_callback(void *c, struct key_params *params)
3016 {
3017         struct nlattr *key;
3018         struct get_key_cookie *cookie = c;
3019
3020         if ((params->key &&
3021              nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
3022                      params->key_len, params->key)) ||
3023             (params->seq &&
3024              nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
3025                      params->seq_len, params->seq)) ||
3026             (params->cipher &&
3027              nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
3028                          params->cipher)))
3029                 goto nla_put_failure;
3030
3031         key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
3032         if (!key)
3033                 goto nla_put_failure;
3034
3035         if ((params->key &&
3036              nla_put(cookie->msg, NL80211_KEY_DATA,
3037                      params->key_len, params->key)) ||
3038             (params->seq &&
3039              nla_put(cookie->msg, NL80211_KEY_SEQ,
3040                      params->seq_len, params->seq)) ||
3041             (params->cipher &&
3042              nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
3043                          params->cipher)))
3044                 goto nla_put_failure;
3045
3046         if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx))
3047                 goto nla_put_failure;
3048
3049         nla_nest_end(cookie->msg, key);
3050
3051         return;
3052  nla_put_failure:
3053         cookie->error = 1;
3054 }
3055
3056 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
3057 {
3058         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3059         int err;
3060         struct net_device *dev = info->user_ptr[1];
3061         u8 key_idx = 0;
3062         const u8 *mac_addr = NULL;
3063         bool pairwise;
3064         struct get_key_cookie cookie = {
3065                 .error = 0,
3066         };
3067         void *hdr;
3068         struct sk_buff *msg;
3069
3070         if (info->attrs[NL80211_ATTR_KEY_IDX])
3071                 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
3072
3073         if (key_idx > 5)
3074                 return -EINVAL;
3075
3076         if (info->attrs[NL80211_ATTR_MAC])
3077                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3078
3079         pairwise = !!mac_addr;
3080         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
3081                 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
3082
3083                 if (kt >= NUM_NL80211_KEYTYPES)
3084                         return -EINVAL;
3085                 if (kt != NL80211_KEYTYPE_GROUP &&
3086                     kt != NL80211_KEYTYPE_PAIRWISE)
3087                         return -EINVAL;
3088                 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
3089         }
3090
3091         if (!rdev->ops->get_key)
3092                 return -EOPNOTSUPP;
3093
3094         if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3095                 return -ENOENT;
3096
3097         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3098         if (!msg)
3099                 return -ENOMEM;
3100
3101         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
3102                              NL80211_CMD_NEW_KEY);
3103         if (!hdr)
3104                 goto nla_put_failure;
3105
3106         cookie.msg = msg;
3107         cookie.idx = key_idx;
3108
3109         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3110             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
3111                 goto nla_put_failure;
3112         if (mac_addr &&
3113             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
3114                 goto nla_put_failure;
3115
3116         err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
3117                            get_key_callback);
3118
3119         if (err)
3120                 goto free_msg;
3121
3122         if (cookie.error)
3123                 goto nla_put_failure;
3124
3125         genlmsg_end(msg, hdr);
3126         return genlmsg_reply(msg, info);
3127
3128  nla_put_failure:
3129         err = -ENOBUFS;
3130  free_msg:
3131         nlmsg_free(msg);
3132         return err;
3133 }
3134
3135 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
3136 {
3137         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3138         struct key_parse key;
3139         int err;
3140         struct net_device *dev = info->user_ptr[1];
3141
3142         err = nl80211_parse_key(info, &key);
3143         if (err)
3144                 return err;
3145
3146         if (key.idx < 0)
3147                 return -EINVAL;
3148
3149         /* only support setting default key */
3150         if (!key.def && !key.defmgmt)
3151                 return -EINVAL;
3152
3153         wdev_lock(dev->ieee80211_ptr);
3154
3155         if (key.def) {
3156                 if (!rdev->ops->set_default_key) {
3157                         err = -EOPNOTSUPP;
3158                         goto out;
3159                 }
3160
3161                 err = nl80211_key_allowed(dev->ieee80211_ptr);
3162                 if (err)
3163                         goto out;
3164
3165                 err = rdev_set_default_key(rdev, dev, key.idx,
3166                                                  key.def_uni, key.def_multi);
3167
3168                 if (err)
3169                         goto out;
3170
3171 #ifdef CONFIG_CFG80211_WEXT
3172                 dev->ieee80211_ptr->wext.default_key = key.idx;
3173 #endif
3174         } else {
3175                 if (key.def_uni || !key.def_multi) {
3176                         err = -EINVAL;
3177                         goto out;
3178                 }
3179
3180                 if (!rdev->ops->set_default_mgmt_key) {
3181                         err = -EOPNOTSUPP;
3182                         goto out;
3183                 }
3184
3185                 err = nl80211_key_allowed(dev->ieee80211_ptr);
3186                 if (err)
3187                         goto out;
3188
3189                 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
3190                 if (err)
3191                         goto out;
3192
3193 #ifdef CONFIG_CFG80211_WEXT
3194                 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
3195 #endif
3196         }
3197
3198  out:
3199         wdev_unlock(dev->ieee80211_ptr);
3200
3201         return err;
3202 }
3203
3204 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
3205 {
3206         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3207         int err;
3208         struct net_device *dev = info->user_ptr[1];
3209         struct key_parse key;
3210         const u8 *mac_addr = NULL;
3211
3212         err = nl80211_parse_key(info, &key);
3213         if (err)
3214                 return err;
3215
3216         if (!key.p.key)
3217                 return -EINVAL;
3218
3219         if (info->attrs[NL80211_ATTR_MAC])
3220                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3221
3222         if (key.type == -1) {
3223                 if (mac_addr)
3224                         key.type = NL80211_KEYTYPE_PAIRWISE;
3225                 else
3226                         key.type = NL80211_KEYTYPE_GROUP;
3227         }
3228
3229         /* for now */
3230         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3231             key.type != NL80211_KEYTYPE_GROUP)
3232                 return -EINVAL;
3233
3234         if (!rdev->ops->add_key)
3235                 return -EOPNOTSUPP;
3236
3237         if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
3238                                            key.type == NL80211_KEYTYPE_PAIRWISE,
3239                                            mac_addr))
3240                 return -EINVAL;
3241
3242         wdev_lock(dev->ieee80211_ptr);
3243         err = nl80211_key_allowed(dev->ieee80211_ptr);
3244         if (!err)
3245                 err = rdev_add_key(rdev, dev, key.idx,
3246                                    key.type == NL80211_KEYTYPE_PAIRWISE,
3247                                     mac_addr, &key.p);
3248         wdev_unlock(dev->ieee80211_ptr);
3249
3250         return err;
3251 }
3252
3253 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
3254 {
3255         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3256         int err;
3257         struct net_device *dev = info->user_ptr[1];
3258         u8 *mac_addr = NULL;
3259         struct key_parse key;
3260
3261         err = nl80211_parse_key(info, &key);
3262         if (err)
3263                 return err;
3264
3265         if (info->attrs[NL80211_ATTR_MAC])
3266                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3267
3268         if (key.type == -1) {
3269                 if (mac_addr)
3270                         key.type = NL80211_KEYTYPE_PAIRWISE;
3271                 else
3272                         key.type = NL80211_KEYTYPE_GROUP;
3273         }
3274
3275         /* for now */
3276         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3277             key.type != NL80211_KEYTYPE_GROUP)
3278                 return -EINVAL;
3279
3280         if (!rdev->ops->del_key)
3281                 return -EOPNOTSUPP;
3282
3283         wdev_lock(dev->ieee80211_ptr);
3284         err = nl80211_key_allowed(dev->ieee80211_ptr);
3285
3286         if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
3287             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3288                 err = -ENOENT;
3289
3290         if (!err)
3291                 err = rdev_del_key(rdev, dev, key.idx,
3292                                    key.type == NL80211_KEYTYPE_PAIRWISE,
3293                                    mac_addr);
3294
3295 #ifdef CONFIG_CFG80211_WEXT
3296         if (!err) {
3297                 if (key.idx == dev->ieee80211_ptr->wext.default_key)
3298                         dev->ieee80211_ptr->wext.default_key = -1;
3299                 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
3300                         dev->ieee80211_ptr->wext.default_mgmt_key = -1;
3301         }
3302 #endif
3303         wdev_unlock(dev->ieee80211_ptr);
3304
3305         return err;
3306 }
3307
3308 /* This function returns an error or the number of nested attributes */
3309 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
3310 {
3311         struct nlattr *attr;
3312         int n_entries = 0, tmp;
3313
3314         nla_for_each_nested(attr, nl_attr, tmp) {
3315                 if (nla_len(attr) != ETH_ALEN)
3316                         return -EINVAL;
3317
3318                 n_entries++;
3319         }
3320
3321         return n_entries;
3322 }
3323
3324 /*
3325  * This function parses ACL information and allocates memory for ACL data.
3326  * On successful return, the calling function is responsible to free the
3327  * ACL buffer returned by this function.
3328  */
3329 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
3330                                                 struct genl_info *info)
3331 {
3332         enum nl80211_acl_policy acl_policy;
3333         struct nlattr *attr;
3334         struct cfg80211_acl_data *acl;
3335         int i = 0, n_entries, tmp;
3336
3337         if (!wiphy->max_acl_mac_addrs)
3338                 return ERR_PTR(-EOPNOTSUPP);
3339
3340         if (!info->attrs[NL80211_ATTR_ACL_POLICY])
3341                 return ERR_PTR(-EINVAL);
3342
3343         acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
3344         if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
3345             acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
3346                 return ERR_PTR(-EINVAL);
3347
3348         if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
3349                 return ERR_PTR(-EINVAL);
3350
3351         n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
3352         if (n_entries < 0)
3353                 return ERR_PTR(n_entries);
3354
3355         if (n_entries > wiphy->max_acl_mac_addrs)
3356                 return ERR_PTR(-ENOTSUPP);
3357
3358         acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries),
3359                       GFP_KERNEL);
3360         if (!acl)
3361                 return ERR_PTR(-ENOMEM);
3362
3363         nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
3364                 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
3365                 i++;
3366         }
3367
3368         acl->n_acl_entries = n_entries;
3369         acl->acl_policy = acl_policy;
3370
3371         return acl;
3372 }
3373
3374 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
3375 {
3376         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3377         struct net_device *dev = info->user_ptr[1];
3378         struct cfg80211_acl_data *acl;
3379         int err;
3380
3381         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3382             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3383                 return -EOPNOTSUPP;
3384
3385         if (!dev->ieee80211_ptr->beacon_interval)
3386                 return -EINVAL;
3387
3388         acl = parse_acl_data(&rdev->wiphy, info);
3389         if (IS_ERR(acl))
3390                 return PTR_ERR(acl);
3391
3392         err = rdev_set_mac_acl(rdev, dev, acl);
3393
3394         kfree(acl);
3395
3396         return err;
3397 }
3398
3399 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
3400                            u8 *rates, u8 rates_len)
3401 {
3402         u8 i;
3403         u32 mask = 0;
3404
3405         for (i = 0; i < rates_len; i++) {
3406                 int rate = (rates[i] & 0x7f) * 5;
3407                 int ridx;
3408
3409                 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
3410                         struct ieee80211_rate *srate =
3411                                 &sband->bitrates[ridx];
3412                         if (rate == srate->bitrate) {
3413                                 mask |= 1 << ridx;
3414                                 break;
3415                         }
3416                 }
3417                 if (ridx == sband->n_bitrates)
3418                         return 0; /* rate not found */
3419         }
3420
3421         return mask;
3422 }
3423
3424 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
3425                                u8 *rates, u8 rates_len,
3426                                u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
3427 {
3428         u8 i;
3429
3430         memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
3431
3432         for (i = 0; i < rates_len; i++) {
3433                 int ridx, rbit;
3434
3435                 ridx = rates[i] / 8;
3436                 rbit = BIT(rates[i] % 8);
3437
3438                 /* check validity */
3439                 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
3440                         return false;
3441
3442                 /* check availability */
3443                 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
3444                         mcs[ridx] |= rbit;
3445                 else
3446                         return false;
3447         }
3448
3449         return true;
3450 }
3451
3452 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
3453 {
3454         u16 mcs_mask = 0;
3455
3456         switch (vht_mcs_map) {
3457         case IEEE80211_VHT_MCS_NOT_SUPPORTED:
3458                 break;
3459         case IEEE80211_VHT_MCS_SUPPORT_0_7:
3460                 mcs_mask = 0x00FF;
3461                 break;
3462         case IEEE80211_VHT_MCS_SUPPORT_0_8:
3463                 mcs_mask = 0x01FF;
3464                 break;
3465         case IEEE80211_VHT_MCS_SUPPORT_0_9:
3466                 mcs_mask = 0x03FF;
3467                 break;
3468         default:
3469                 break;
3470         }
3471
3472         return mcs_mask;
3473 }
3474
3475 static void vht_build_mcs_mask(u16 vht_mcs_map,
3476                                u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
3477 {
3478         u8 nss;
3479
3480         for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
3481                 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
3482                 vht_mcs_map >>= 2;
3483         }
3484 }
3485
3486 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
3487                              struct nl80211_txrate_vht *txrate,
3488                              u16 mcs[NL80211_VHT_NSS_MAX])
3489 {
3490         u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
3491         u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
3492         u8 i;
3493
3494         if (!sband->vht_cap.vht_supported)
3495                 return false;
3496
3497         memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
3498
3499         /* Build vht_mcs_mask from VHT capabilities */
3500         vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
3501
3502         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
3503                 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
3504                         mcs[i] = txrate->mcs[i];
3505                 else
3506                         return false;
3507         }
3508
3509         return true;
3510 }
3511
3512 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
3513         [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
3514                                     .len = NL80211_MAX_SUPP_RATES },
3515         [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
3516                                 .len = NL80211_MAX_SUPP_HT_RATES },
3517         [NL80211_TXRATE_VHT] = { .len = sizeof(struct nl80211_txrate_vht)},
3518         [NL80211_TXRATE_GI] = { .type = NLA_U8 },
3519 };
3520
3521 static int nl80211_parse_tx_bitrate_mask(struct genl_info *info,
3522                                          struct cfg80211_bitrate_mask *mask)
3523 {
3524         struct nlattr *tb[NL80211_TXRATE_MAX + 1];
3525         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3526         int rem, i;
3527         struct nlattr *tx_rates;
3528         struct ieee80211_supported_band *sband;
3529         u16 vht_tx_mcs_map;
3530
3531         memset(mask, 0, sizeof(*mask));
3532         /* Default to all rates enabled */
3533         for (i = 0; i < NUM_NL80211_BANDS; i++) {
3534                 sband = rdev->wiphy.bands[i];
3535
3536                 if (!sband)
3537                         continue;
3538
3539                 mask->control[i].legacy = (1 << sband->n_bitrates) - 1;
3540                 memcpy(mask->control[i].ht_mcs,
3541                        sband->ht_cap.mcs.rx_mask,
3542                        sizeof(mask->control[i].ht_mcs));
3543
3544                 if (!sband->vht_cap.vht_supported)
3545                         continue;
3546
3547                 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
3548                 vht_build_mcs_mask(vht_tx_mcs_map, mask->control[i].vht_mcs);
3549         }
3550
3551         /* if no rates are given set it back to the defaults */
3552         if (!info->attrs[NL80211_ATTR_TX_RATES])
3553                 goto out;
3554
3555         /* The nested attribute uses enum nl80211_band as the index. This maps
3556          * directly to the enum nl80211_band values used in cfg80211.
3557          */
3558         BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
3559         nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) {
3560                 enum nl80211_band band = nla_type(tx_rates);
3561                 int err;
3562
3563                 if (band < 0 || band >= NUM_NL80211_BANDS)
3564                         return -EINVAL;
3565                 sband = rdev->wiphy.bands[band];
3566                 if (sband == NULL)
3567                         return -EINVAL;
3568                 err = nla_parse_nested(tb, NL80211_TXRATE_MAX, tx_rates,
3569                                        nl80211_txattr_policy);
3570                 if (err)
3571                         return err;
3572                 if (tb[NL80211_TXRATE_LEGACY]) {
3573                         mask->control[band].legacy = rateset_to_mask(
3574                                 sband,
3575                                 nla_data(tb[NL80211_TXRATE_LEGACY]),
3576                                 nla_len(tb[NL80211_TXRATE_LEGACY]));
3577                         if ((mask->control[band].legacy == 0) &&
3578                             nla_len(tb[NL80211_TXRATE_LEGACY]))
3579                                 return -EINVAL;
3580                 }
3581                 if (tb[NL80211_TXRATE_HT]) {
3582                         if (!ht_rateset_to_mask(
3583                                         sband,
3584                                         nla_data(tb[NL80211_TXRATE_HT]),
3585                                         nla_len(tb[NL80211_TXRATE_HT]),
3586                                         mask->control[band].ht_mcs))
3587                                 return -EINVAL;
3588                 }
3589                 if (tb[NL80211_TXRATE_VHT]) {
3590                         if (!vht_set_mcs_mask(
3591                                         sband,
3592                                         nla_data(tb[NL80211_TXRATE_VHT]),
3593                                         mask->control[band].vht_mcs))
3594                                 return -EINVAL;
3595                 }
3596                 if (tb[NL80211_TXRATE_GI]) {
3597                         mask->control[band].gi =
3598                                 nla_get_u8(tb[NL80211_TXRATE_GI]);
3599                         if (mask->control[band].gi > NL80211_TXRATE_FORCE_LGI)
3600                                 return -EINVAL;
3601                 }
3602
3603                 if (mask->control[band].legacy == 0) {
3604                         /* don't allow empty legacy rates if HT or VHT
3605                          * are not even supported.
3606                          */
3607                         if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
3608                               rdev->wiphy.bands[band]->vht_cap.vht_supported))
3609                                 return -EINVAL;
3610
3611                         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
3612                                 if (mask->control[band].ht_mcs[i])
3613                                         goto out;
3614
3615                         for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
3616                                 if (mask->control[band].vht_mcs[i])
3617                                         goto out;
3618
3619                         /* legacy and mcs rates may not be both empty */
3620                         return -EINVAL;
3621                 }
3622         }
3623
3624 out:
3625         return 0;
3626 }
3627
3628 static int validate_beacon_tx_rate(struct cfg80211_registered_device *rdev,
3629                                    enum nl80211_band band,
3630                                    struct cfg80211_bitrate_mask *beacon_rate)
3631 {
3632         u32 count_ht, count_vht, i;
3633         u32 rate = beacon_rate->control[band].legacy;
3634
3635         /* Allow only one rate */
3636         if (hweight32(rate) > 1)
3637                 return -EINVAL;
3638
3639         count_ht = 0;
3640         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) {
3641                 if (hweight8(beacon_rate->control[band].ht_mcs[i]) > 1) {
3642                         return -EINVAL;
3643                 } else if (beacon_rate->control[band].ht_mcs[i]) {
3644                         count_ht++;
3645                         if (count_ht > 1)
3646                                 return -EINVAL;
3647                 }
3648                 if (count_ht && rate)
3649                         return -EINVAL;
3650         }
3651
3652         count_vht = 0;
3653         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
3654                 if (hweight16(beacon_rate->control[band].vht_mcs[i]) > 1) {
3655                         return -EINVAL;
3656                 } else if (beacon_rate->control[band].vht_mcs[i]) {
3657                         count_vht++;
3658                         if (count_vht > 1)
3659                                 return -EINVAL;
3660                 }
3661                 if (count_vht && rate)
3662                         return -EINVAL;
3663         }
3664
3665         if ((count_ht && count_vht) || (!rate && !count_ht && !count_vht))
3666                 return -EINVAL;
3667
3668         if (rate &&
3669             !wiphy_ext_feature_isset(&rdev->wiphy,
3670                                      NL80211_EXT_FEATURE_BEACON_RATE_LEGACY))
3671                 return -EINVAL;
3672         if (count_ht &&
3673             !wiphy_ext_feature_isset(&rdev->wiphy,
3674                                      NL80211_EXT_FEATURE_BEACON_RATE_HT))
3675                 return -EINVAL;
3676         if (count_vht &&
3677             !wiphy_ext_feature_isset(&rdev->wiphy,
3678                                      NL80211_EXT_FEATURE_BEACON_RATE_VHT))
3679                 return -EINVAL;
3680
3681         return 0;
3682 }
3683
3684 static int nl80211_parse_beacon(struct nlattr *attrs[],
3685                                 struct cfg80211_beacon_data *bcn)
3686 {
3687         bool haveinfo = false;
3688
3689         if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) ||
3690             !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) ||
3691             !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
3692             !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP]))
3693                 return -EINVAL;
3694
3695         memset(bcn, 0, sizeof(*bcn));
3696
3697         if (attrs[NL80211_ATTR_BEACON_HEAD]) {
3698                 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
3699                 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
3700                 if (!bcn->head_len)
3701                         return -EINVAL;
3702                 haveinfo = true;
3703         }
3704
3705         if (attrs[NL80211_ATTR_BEACON_TAIL]) {
3706                 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
3707                 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
3708                 haveinfo = true;
3709         }
3710
3711         if (!haveinfo)
3712                 return -EINVAL;
3713
3714         if (attrs[NL80211_ATTR_IE]) {
3715                 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
3716                 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
3717         }
3718
3719         if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
3720                 bcn->proberesp_ies =
3721                         nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3722                 bcn->proberesp_ies_len =
3723                         nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3724         }
3725
3726         if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
3727                 bcn->assocresp_ies =
3728                         nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3729                 bcn->assocresp_ies_len =
3730                         nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3731         }
3732
3733         if (attrs[NL80211_ATTR_PROBE_RESP]) {
3734                 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
3735                 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
3736         }
3737
3738         return 0;
3739 }
3740
3741 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
3742                                    struct cfg80211_ap_settings *params)
3743 {
3744         struct wireless_dev *wdev;
3745         bool ret = false;
3746
3747         list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
3748                 if (wdev->iftype != NL80211_IFTYPE_AP &&
3749                     wdev->iftype != NL80211_IFTYPE_P2P_GO)
3750                         continue;
3751
3752                 if (!wdev->preset_chandef.chan)
3753                         continue;
3754
3755                 params->chandef = wdev->preset_chandef;
3756                 ret = true;
3757                 break;
3758         }
3759
3760         return ret;
3761 }
3762
3763 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
3764                                     enum nl80211_auth_type auth_type,
3765                                     enum nl80211_commands cmd)
3766 {
3767         if (auth_type > NL80211_AUTHTYPE_MAX)
3768                 return false;
3769
3770         switch (cmd) {
3771         case NL80211_CMD_AUTHENTICATE:
3772                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
3773                     auth_type == NL80211_AUTHTYPE_SAE)
3774                         return false;
3775                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3776                                              NL80211_EXT_FEATURE_FILS_STA) &&
3777                     (auth_type == NL80211_AUTHTYPE_FILS_SK ||
3778                      auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
3779                      auth_type == NL80211_AUTHTYPE_FILS_PK))
3780                         return false;
3781                 return true;
3782         case NL80211_CMD_CONNECT:
3783         case NL80211_CMD_START_AP:
3784                 /* SAE not supported yet */
3785                 if (auth_type == NL80211_AUTHTYPE_SAE)
3786                         return false;
3787                 /* FILS not supported yet */
3788                 if (auth_type == NL80211_AUTHTYPE_FILS_SK ||
3789                     auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
3790                     auth_type == NL80211_AUTHTYPE_FILS_PK)
3791                         return false;
3792                 return true;
3793         default:
3794                 return false;
3795         }
3796 }
3797
3798 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
3799 {
3800         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3801         struct net_device *dev = info->user_ptr[1];
3802         struct wireless_dev *wdev = dev->ieee80211_ptr;
3803         struct cfg80211_ap_settings params;
3804         int err;
3805
3806         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3807             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3808                 return -EOPNOTSUPP;
3809
3810         if (!rdev->ops->start_ap)
3811                 return -EOPNOTSUPP;
3812
3813         if (wdev->beacon_interval)
3814                 return -EALREADY;
3815
3816         memset(&params, 0, sizeof(params));
3817
3818         /* these are required for START_AP */
3819         if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
3820             !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
3821             !info->attrs[NL80211_ATTR_BEACON_HEAD])
3822                 return -EINVAL;
3823
3824         err = nl80211_parse_beacon(info->attrs, &params.beacon);
3825         if (err)
3826                 return err;
3827
3828         params.beacon_interval =
3829                 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3830         params.dtim_period =
3831                 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
3832
3833         err = cfg80211_validate_beacon_int(rdev, dev->ieee80211_ptr->iftype,
3834                                            params.beacon_interval);
3835         if (err)
3836                 return err;
3837
3838         /*
3839          * In theory, some of these attributes should be required here
3840          * but since they were not used when the command was originally
3841          * added, keep them optional for old user space programs to let
3842          * them continue to work with drivers that do not need the
3843          * additional information -- drivers must check!
3844          */
3845         if (info->attrs[NL80211_ATTR_SSID]) {
3846                 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3847                 params.ssid_len =
3848                         nla_len(info->attrs[NL80211_ATTR_SSID]);
3849                 if (params.ssid_len == 0 ||
3850                     params.ssid_len > IEEE80211_MAX_SSID_LEN)
3851                         return -EINVAL;
3852         }
3853
3854         if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
3855                 params.hidden_ssid = nla_get_u32(
3856                         info->attrs[NL80211_ATTR_HIDDEN_SSID]);
3857                 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
3858                     params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
3859                     params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
3860                         return -EINVAL;
3861         }
3862
3863         params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
3864
3865         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
3866                 params.auth_type = nla_get_u32(
3867                         info->attrs[NL80211_ATTR_AUTH_TYPE]);
3868                 if (!nl80211_valid_auth_type(rdev, params.auth_type,
3869                                              NL80211_CMD_START_AP))
3870                         return -EINVAL;
3871         } else
3872                 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
3873
3874         err = nl80211_crypto_settings(rdev, info, &params.crypto,
3875                                       NL80211_MAX_NR_CIPHER_SUITES);
3876         if (err)
3877                 return err;
3878
3879         if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
3880                 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
3881                         return -EOPNOTSUPP;
3882                 params.inactivity_timeout = nla_get_u16(
3883                         info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
3884         }
3885
3886         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
3887                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3888                         return -EINVAL;
3889                 params.p2p_ctwindow =
3890                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
3891                 if (params.p2p_ctwindow > 127)
3892                         return -EINVAL;
3893                 if (params.p2p_ctwindow != 0 &&
3894                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
3895                         return -EINVAL;
3896         }
3897
3898         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
3899                 u8 tmp;
3900
3901                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3902                         return -EINVAL;
3903                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
3904                 if (tmp > 1)
3905                         return -EINVAL;
3906                 params.p2p_opp_ps = tmp;
3907                 if (params.p2p_opp_ps != 0 &&
3908                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
3909                         return -EINVAL;
3910         }
3911
3912         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3913                 err = nl80211_parse_chandef(rdev, info, &params.chandef);
3914                 if (err)
3915                         return err;
3916         } else if (wdev->preset_chandef.chan) {
3917                 params.chandef = wdev->preset_chandef;
3918         } else if (!nl80211_get_ap_channel(rdev, &params))
3919                 return -EINVAL;
3920
3921         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
3922                                            wdev->iftype))
3923                 return -EINVAL;
3924
3925         if (info->attrs[NL80211_ATTR_TX_RATES]) {
3926                 err = nl80211_parse_tx_bitrate_mask(info, &params.beacon_rate);
3927                 if (err)
3928                         return err;
3929
3930                 err = validate_beacon_tx_rate(rdev, params.chandef.chan->band,
3931                                               &params.beacon_rate);
3932                 if (err)
3933                         return err;
3934         }
3935
3936         if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
3937                 params.smps_mode =
3938                         nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
3939                 switch (params.smps_mode) {
3940                 case NL80211_SMPS_OFF:
3941                         break;
3942                 case NL80211_SMPS_STATIC:
3943                         if (!(rdev->wiphy.features &
3944                               NL80211_FEATURE_STATIC_SMPS))
3945                                 return -EINVAL;
3946                         break;
3947                 case NL80211_SMPS_DYNAMIC:
3948                         if (!(rdev->wiphy.features &
3949                               NL80211_FEATURE_DYNAMIC_SMPS))
3950                                 return -EINVAL;
3951                         break;
3952                 default:
3953                         return -EINVAL;
3954                 }
3955         } else {
3956                 params.smps_mode = NL80211_SMPS_OFF;
3957         }
3958
3959         params.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
3960         if (params.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ])
3961                 return -EOPNOTSUPP;
3962
3963         if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
3964                 params.acl = parse_acl_data(&rdev->wiphy, info);
3965                 if (IS_ERR(params.acl))
3966                         return PTR_ERR(params.acl);
3967         }
3968
3969         wdev_lock(wdev);
3970         err = rdev_start_ap(rdev, dev, &params);
3971         if (!err) {
3972                 wdev->preset_chandef = params.chandef;
3973                 wdev->beacon_interval = params.beacon_interval;
3974                 wdev->chandef = params.chandef;
3975                 wdev->ssid_len = params.ssid_len;
3976                 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
3977         }
3978         wdev_unlock(wdev);
3979
3980         kfree(params.acl);
3981
3982         return err;
3983 }
3984
3985 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
3986 {
3987         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3988         struct net_device *dev = info->user_ptr[1];
3989         struct wireless_dev *wdev = dev->ieee80211_ptr;
3990         struct cfg80211_beacon_data params;
3991         int err;
3992
3993         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3994             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3995                 return -EOPNOTSUPP;
3996
3997         if (!rdev->ops->change_beacon)
3998                 return -EOPNOTSUPP;
3999
4000         if (!wdev->beacon_interval)
4001                 return -EINVAL;
4002
4003         err = nl80211_parse_beacon(info->attrs, &params);
4004         if (err)
4005                 return err;
4006
4007         wdev_lock(wdev);
4008         err = rdev_change_beacon(rdev, dev, &params);
4009         wdev_unlock(wdev);
4010
4011         return err;
4012 }
4013
4014 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
4015 {
4016         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4017         struct net_device *dev = info->user_ptr[1];
4018
4019         return cfg80211_stop_ap(rdev, dev, false);
4020 }
4021
4022 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
4023         [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
4024         [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
4025         [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
4026         [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
4027         [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
4028         [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
4029 };
4030
4031 static int parse_station_flags(struct genl_info *info,
4032                                enum nl80211_iftype iftype,
4033                                struct station_parameters *params)
4034 {
4035         struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
4036         struct nlattr *nla;
4037         int flag;
4038
4039         /*
4040          * Try parsing the new attribute first so userspace
4041          * can specify both for older kernels.
4042          */
4043         nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
4044         if (nla) {
4045                 struct nl80211_sta_flag_update *sta_flags;
4046
4047                 sta_flags = nla_data(nla);
4048                 params->sta_flags_mask = sta_flags->mask;
4049                 params->sta_flags_set = sta_flags->set;
4050                 params->sta_flags_set &= params->sta_flags_mask;
4051                 if ((params->sta_flags_mask |
4052                      params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
4053                         return -EINVAL;
4054                 return 0;
4055         }
4056
4057         /* if present, parse the old attribute */
4058
4059         nla = info->attrs[NL80211_ATTR_STA_FLAGS];
4060         if (!nla)
4061                 return 0;
4062
4063         if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
4064                              nla, sta_flags_policy))
4065                 return -EINVAL;
4066
4067         /*
4068          * Only allow certain flags for interface types so that
4069          * other attributes are silently ignored. Remember that
4070          * this is backward compatibility code with old userspace
4071          * and shouldn't be hit in other cases anyway.
4072          */
4073         switch (iftype) {
4074         case NL80211_IFTYPE_AP:
4075         case NL80211_IFTYPE_AP_VLAN:
4076         case NL80211_IFTYPE_P2P_GO:
4077                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
4078                                          BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
4079                                          BIT(NL80211_STA_FLAG_WME) |
4080                                          BIT(NL80211_STA_FLAG_MFP);
4081                 break;
4082         case NL80211_IFTYPE_P2P_CLIENT:
4083         case NL80211_IFTYPE_STATION:
4084                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
4085                                          BIT(NL80211_STA_FLAG_TDLS_PEER);
4086                 break;
4087         case NL80211_IFTYPE_MESH_POINT:
4088                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4089                                          BIT(NL80211_STA_FLAG_MFP) |
4090                                          BIT(NL80211_STA_FLAG_AUTHORIZED);
4091         default:
4092                 return -EINVAL;
4093         }
4094
4095         for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
4096                 if (flags[flag]) {
4097                         params->sta_flags_set |= (1<<flag);
4098
4099                         /* no longer support new API additions in old API */
4100                         if (flag > NL80211_STA_FLAG_MAX_OLD_API)
4101                                 return -EINVAL;
4102                 }
4103         }
4104
4105         return 0;
4106 }
4107
4108 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
4109                                  int attr)
4110 {
4111         struct nlattr *rate;
4112         u32 bitrate;
4113         u16 bitrate_compat;
4114         enum nl80211_attrs rate_flg;
4115
4116         rate = nla_nest_start(msg, attr);
4117         if (!rate)
4118                 return false;
4119
4120         /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
4121         bitrate = cfg80211_calculate_bitrate(info);
4122         /* report 16-bit bitrate only if we can */
4123         bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
4124         if (bitrate > 0 &&
4125             nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
4126                 return false;
4127         if (bitrate_compat > 0 &&
4128             nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
4129                 return false;
4130
4131         switch (info->bw) {
4132         case RATE_INFO_BW_5:
4133                 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
4134                 break;
4135         case RATE_INFO_BW_10:
4136                 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
4137                 break;
4138         default:
4139                 WARN_ON(1);
4140                 /* fall through */
4141         case RATE_INFO_BW_20:
4142                 rate_flg = 0;
4143                 break;
4144         case RATE_INFO_BW_40:
4145                 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
4146                 break;
4147         case RATE_INFO_BW_80:
4148                 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
4149                 break;
4150         case RATE_INFO_BW_160:
4151                 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
4152                 break;
4153         }
4154
4155         if (rate_flg && nla_put_flag(msg, rate_flg))
4156                 return false;
4157
4158         if (info->flags & RATE_INFO_FLAGS_MCS) {
4159                 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
4160                         return false;
4161                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
4162                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
4163                         return false;
4164         } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
4165                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
4166                         return false;
4167                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
4168                         return false;
4169                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
4170                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
4171                         return false;
4172         }
4173
4174         nla_nest_end(msg, rate);
4175         return true;
4176 }
4177
4178 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
4179                                int id)
4180 {
4181         void *attr;
4182         int i = 0;
4183
4184         if (!mask)
4185                 return true;
4186
4187         attr = nla_nest_start(msg, id);
4188         if (!attr)
4189                 return false;
4190
4191         for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
4192                 if (!(mask & BIT(i)))
4193                         continue;
4194
4195                 if (nla_put_u8(msg, i, signal[i]))
4196                         return false;
4197         }
4198
4199         nla_nest_end(msg, attr);
4200
4201         return true;
4202 }
4203
4204 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
4205                                 u32 seq, int flags,
4206                                 struct cfg80211_registered_device *rdev,
4207                                 struct net_device *dev,
4208                                 const u8 *mac_addr, struct station_info *sinfo)
4209 {
4210         void *hdr;
4211         struct nlattr *sinfoattr, *bss_param;
4212
4213         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
4214         if (!hdr)
4215                 return -1;
4216
4217         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4218             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
4219             nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
4220                 goto nla_put_failure;
4221
4222         sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
4223         if (!sinfoattr)
4224                 goto nla_put_failure;
4225
4226 #define PUT_SINFO(attr, memb, type) do {                                \
4227         BUILD_BUG_ON(sizeof(type) == sizeof(u64));                      \
4228         if (sinfo->filled & (1ULL << NL80211_STA_INFO_ ## attr) &&      \
4229             nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr,            \
4230                              sinfo->memb))                              \
4231                 goto nla_put_failure;                                   \
4232         } while (0)
4233 #define PUT_SINFO_U64(attr, memb) do {                                  \
4234         if (sinfo->filled & (1ULL << NL80211_STA_INFO_ ## attr) &&      \
4235             nla_put_u64_64bit(msg, NL80211_STA_INFO_ ## attr,           \
4236                               sinfo->memb, NL80211_STA_INFO_PAD))       \
4237                 goto nla_put_failure;                                   \
4238         } while (0)
4239
4240         PUT_SINFO(CONNECTED_TIME, connected_time, u32);
4241         PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
4242
4243         if (sinfo->filled & (BIT(NL80211_STA_INFO_RX_BYTES) |
4244                              BIT(NL80211_STA_INFO_RX_BYTES64)) &&
4245             nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
4246                         (u32)sinfo->rx_bytes))
4247                 goto nla_put_failure;
4248
4249         if (sinfo->filled & (BIT(NL80211_STA_INFO_TX_BYTES) |
4250                              BIT(NL80211_STA_INFO_TX_BYTES64)) &&
4251             nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
4252                         (u32)sinfo->tx_bytes))
4253                 goto nla_put_failure;
4254
4255         PUT_SINFO_U64(RX_BYTES64, rx_bytes);
4256         PUT_SINFO_U64(TX_BYTES64, tx_bytes);
4257         PUT_SINFO(LLID, llid, u16);
4258         PUT_SINFO(PLID, plid, u16);
4259         PUT_SINFO(PLINK_STATE, plink_state, u8);
4260         PUT_SINFO_U64(RX_DURATION, rx_duration);
4261
4262         switch (rdev->wiphy.signal_type) {
4263         case CFG80211_SIGNAL_TYPE_MBM:
4264                 PUT_SINFO(SIGNAL, signal, u8);
4265                 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
4266                 break;
4267         default:
4268                 break;
4269         }
4270         if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL)) {
4271                 if (!nl80211_put_signal(msg, sinfo->chains,
4272                                         sinfo->chain_signal,
4273                                         NL80211_STA_INFO_CHAIN_SIGNAL))
4274                         goto nla_put_failure;
4275         }
4276         if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
4277                 if (!nl80211_put_signal(msg, sinfo->chains,
4278                                         sinfo->chain_signal_avg,
4279                                         NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
4280                         goto nla_put_failure;
4281         }
4282         if (sinfo->filled & BIT(NL80211_STA_INFO_TX_BITRATE)) {
4283                 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
4284                                           NL80211_STA_INFO_TX_BITRATE))
4285                         goto nla_put_failure;
4286         }
4287         if (sinfo->filled & BIT(NL80211_STA_INFO_RX_BITRATE)) {
4288                 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
4289                                           NL80211_STA_INFO_RX_BITRATE))
4290                         goto nla_put_failure;
4291         }
4292
4293         PUT_SINFO(RX_PACKETS, rx_packets, u32);
4294         PUT_SINFO(TX_PACKETS, tx_packets, u32);
4295         PUT_SINFO(TX_RETRIES, tx_retries, u32);
4296         PUT_SINFO(TX_FAILED, tx_failed, u32);
4297         PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
4298         PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
4299         PUT_SINFO(LOCAL_PM, local_pm, u32);
4300         PUT_SINFO(PEER_PM, peer_pm, u32);
4301         PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
4302
4303         if (sinfo->filled & BIT(NL80211_STA_INFO_BSS_PARAM)) {
4304                 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
4305                 if (!bss_param)
4306                         goto nla_put_failure;
4307
4308                 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
4309                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
4310                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
4311                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
4312                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
4313                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
4314                     nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
4315                                sinfo->bss_param.dtim_period) ||
4316                     nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
4317                                 sinfo->bss_param.beacon_interval))
4318                         goto nla_put_failure;
4319
4320                 nla_nest_end(msg, bss_param);
4321         }
4322         if ((sinfo->filled & BIT(NL80211_STA_INFO_STA_FLAGS)) &&
4323             nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
4324                     sizeof(struct nl80211_sta_flag_update),
4325                     &sinfo->sta_flags))
4326                 goto nla_put_failure;
4327
4328         PUT_SINFO_U64(T_OFFSET, t_offset);
4329         PUT_SINFO_U64(RX_DROP_MISC, rx_dropped_misc);
4330         PUT_SINFO_U64(BEACON_RX, rx_beacon);
4331         PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
4332
4333 #undef PUT_SINFO
4334 #undef PUT_SINFO_U64
4335
4336         if (sinfo->filled & BIT(NL80211_STA_INFO_TID_STATS)) {
4337                 struct nlattr *tidsattr;
4338                 int tid;
4339
4340                 tidsattr = nla_nest_start(msg, NL80211_STA_INFO_TID_STATS);
4341                 if (!tidsattr)
4342                         goto nla_put_failure;
4343
4344                 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
4345                         struct cfg80211_tid_stats *tidstats;
4346                         struct nlattr *tidattr;
4347
4348                         tidstats = &sinfo->pertid[tid];
4349
4350                         if (!tidstats->filled)
4351                                 continue;
4352
4353                         tidattr = nla_nest_start(msg, tid + 1);
4354                         if (!tidattr)
4355                                 goto nla_put_failure;
4356
4357 #define PUT_TIDVAL_U64(attr, memb) do {                                 \
4358         if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) &&       \
4359             nla_put_u64_64bit(msg, NL80211_TID_STATS_ ## attr,          \
4360                               tidstats->memb, NL80211_TID_STATS_PAD))   \
4361                 goto nla_put_failure;                                   \
4362         } while (0)
4363
4364                         PUT_TIDVAL_U64(RX_MSDU, rx_msdu);
4365                         PUT_TIDVAL_U64(TX_MSDU, tx_msdu);
4366                         PUT_TIDVAL_U64(TX_MSDU_RETRIES, tx_msdu_retries);
4367                         PUT_TIDVAL_U64(TX_MSDU_FAILED, tx_msdu_failed);
4368
4369 #undef PUT_TIDVAL_U64
4370                         nla_nest_end(msg, tidattr);
4371                 }
4372
4373                 nla_nest_end(msg, tidsattr);
4374         }
4375
4376         nla_nest_end(msg, sinfoattr);
4377
4378         if (sinfo->assoc_req_ies_len &&
4379             nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
4380                     sinfo->assoc_req_ies))
4381                 goto nla_put_failure;
4382
4383         genlmsg_end(msg, hdr);
4384         return 0;
4385
4386  nla_put_failure:
4387         genlmsg_cancel(msg, hdr);
4388         return -EMSGSIZE;
4389 }
4390
4391 static int nl80211_dump_station(struct sk_buff *skb,
4392                                 struct netlink_callback *cb)
4393 {
4394         struct station_info sinfo;
4395         struct cfg80211_registered_device *rdev;
4396         struct wireless_dev *wdev;
4397         u8 mac_addr[ETH_ALEN];
4398         int sta_idx = cb->args[2];
4399         int err;
4400
4401         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4402         if (err)
4403                 return err;
4404
4405         if (!wdev->netdev) {
4406                 err = -EINVAL;
4407                 goto out_err;
4408         }
4409
4410         if (!rdev->ops->dump_station) {
4411                 err = -EOPNOTSUPP;
4412                 goto out_err;
4413         }
4414
4415         while (1) {
4416                 memset(&sinfo, 0, sizeof(sinfo));
4417                 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
4418                                         mac_addr, &sinfo);
4419                 if (err == -ENOENT)
4420                         break;
4421                 if (err)
4422                         goto out_err;
4423
4424                 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
4425                                 NETLINK_CB(cb->skb).portid,
4426                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4427                                 rdev, wdev->netdev, mac_addr,
4428                                 &sinfo) < 0)
4429                         goto out;
4430
4431                 sta_idx++;
4432         }
4433
4434  out:
4435         cb->args[2] = sta_idx;
4436         err = skb->len;
4437  out_err:
4438         nl80211_finish_wdev_dump(rdev);
4439
4440         return err;
4441 }
4442
4443 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
4444 {
4445         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4446         struct net_device *dev = info->user_ptr[1];
4447         struct station_info sinfo;
4448         struct sk_buff *msg;
4449         u8 *mac_addr = NULL;
4450         int err;
4451
4452         memset(&sinfo, 0, sizeof(sinfo));
4453
4454         if (!info->attrs[NL80211_ATTR_MAC])
4455                 return -EINVAL;
4456
4457         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4458
4459         if (!rdev->ops->get_station)
4460                 return -EOPNOTSUPP;
4461
4462         err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
4463         if (err)
4464                 return err;
4465
4466         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4467         if (!msg)
4468                 return -ENOMEM;
4469
4470         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
4471                                  info->snd_portid, info->snd_seq, 0,
4472                                  rdev, dev, mac_addr, &sinfo) < 0) {
4473                 nlmsg_free(msg);
4474                 return -ENOBUFS;
4475         }
4476
4477         return genlmsg_reply(msg, info);
4478 }
4479
4480 int cfg80211_check_station_change(struct wiphy *wiphy,
4481                                   struct station_parameters *params,
4482                                   enum cfg80211_station_type statype)
4483 {
4484         if (params->listen_interval != -1 &&
4485             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
4486                 return -EINVAL;
4487
4488         if (params->support_p2p_ps != -1 &&
4489             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
4490                 return -EINVAL;
4491
4492         if (params->aid &&
4493             !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
4494             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
4495                 return -EINVAL;
4496
4497         /* When you run into this, adjust the code below for the new flag */
4498         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4499
4500         switch (statype) {
4501         case CFG80211_STA_MESH_PEER_KERNEL:
4502         case CFG80211_STA_MESH_PEER_USER:
4503                 /*
4504                  * No ignoring the TDLS flag here -- the userspace mesh
4505                  * code doesn't have the bug of including TDLS in the
4506                  * mask everywhere.
4507                  */
4508                 if (params->sta_flags_mask &
4509                                 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4510                                   BIT(NL80211_STA_FLAG_MFP) |
4511                                   BIT(NL80211_STA_FLAG_AUTHORIZED)))
4512                         return -EINVAL;
4513                 break;
4514         case CFG80211_STA_TDLS_PEER_SETUP:
4515         case CFG80211_STA_TDLS_PEER_ACTIVE:
4516                 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4517                         return -EINVAL;
4518                 /* ignore since it can't change */
4519                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4520                 break;
4521         default:
4522                 /* disallow mesh-specific things */
4523                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
4524                         return -EINVAL;
4525                 if (params->local_pm)
4526                         return -EINVAL;
4527                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
4528                         return -EINVAL;
4529         }
4530
4531         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
4532             statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
4533                 /* TDLS can't be set, ... */
4534                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
4535                         return -EINVAL;
4536                 /*
4537                  * ... but don't bother the driver with it. This works around
4538                  * a hostapd/wpa_supplicant issue -- it always includes the
4539                  * TLDS_PEER flag in the mask even for AP mode.
4540                  */
4541                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4542         }
4543
4544         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
4545             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
4546                 /* reject other things that can't change */
4547                 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
4548                         return -EINVAL;
4549                 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
4550                         return -EINVAL;
4551                 if (params->supported_rates)
4552                         return -EINVAL;
4553                 if (params->ext_capab || params->ht_capa || params->vht_capa)
4554                         return -EINVAL;
4555         }
4556
4557         if (statype != CFG80211_STA_AP_CLIENT &&
4558             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
4559                 if (params->vlan)
4560                         return -EINVAL;
4561         }
4562
4563         switch (statype) {
4564         case CFG80211_STA_AP_MLME_CLIENT:
4565                 /* Use this only for authorizing/unauthorizing a station */
4566                 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
4567                         return -EOPNOTSUPP;
4568                 break;
4569         case CFG80211_STA_AP_CLIENT:
4570         case CFG80211_STA_AP_CLIENT_UNASSOC:
4571                 /* accept only the listed bits */
4572                 if (params->sta_flags_mask &
4573                                 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4574                                   BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4575                                   BIT(NL80211_STA_FLAG_ASSOCIATED) |
4576                                   BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
4577                                   BIT(NL80211_STA_FLAG_WME) |
4578                                   BIT(NL80211_STA_FLAG_MFP)))
4579                         return -EINVAL;
4580
4581                 /* but authenticated/associated only if driver handles it */
4582                 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4583                     params->sta_flags_mask &
4584                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4585                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
4586                         return -EINVAL;
4587                 break;
4588         case CFG80211_STA_IBSS:
4589         case CFG80211_STA_AP_STA:
4590                 /* reject any changes other than AUTHORIZED */
4591                 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
4592                         return -EINVAL;
4593                 break;
4594         case CFG80211_STA_TDLS_PEER_SETUP:
4595                 /* reject any changes other than AUTHORIZED or WME */
4596                 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4597                                                BIT(NL80211_STA_FLAG_WME)))
4598                         return -EINVAL;
4599                 /* force (at least) rates when authorizing */
4600                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
4601                     !params->supported_rates)
4602                         return -EINVAL;
4603                 break;
4604         case CFG80211_STA_TDLS_PEER_ACTIVE:
4605                 /* reject any changes */
4606                 return -EINVAL;
4607         case CFG80211_STA_MESH_PEER_KERNEL:
4608                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
4609                         return -EINVAL;
4610                 break;
4611         case CFG80211_STA_MESH_PEER_USER:
4612                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION &&
4613                     params->plink_action != NL80211_PLINK_ACTION_BLOCK)
4614                         return -EINVAL;
4615                 break;
4616         }
4617
4618         /*
4619          * Older kernel versions ignored this attribute entirely, so don't
4620          * reject attempts to update it but mark it as unused instead so the
4621          * driver won't look at the data.
4622          */
4623         if (statype != CFG80211_STA_AP_CLIENT_UNASSOC &&
4624             statype != CFG80211_STA_TDLS_PEER_SETUP)
4625                 params->opmode_notif_used = false;
4626
4627         return 0;
4628 }
4629 EXPORT_SYMBOL(cfg80211_check_station_change);
4630
4631 /*
4632  * Get vlan interface making sure it is running and on the right wiphy.
4633  */
4634 static struct net_device *get_vlan(struct genl_info *info,
4635                                    struct cfg80211_registered_device *rdev)
4636 {
4637         struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
4638         struct net_device *v;
4639         int ret;
4640
4641         if (!vlanattr)
4642                 return NULL;
4643
4644         v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
4645         if (!v)
4646                 return ERR_PTR(-ENODEV);
4647
4648         if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
4649                 ret = -EINVAL;
4650                 goto error;
4651         }
4652
4653         if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4654             v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4655             v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
4656                 ret = -EINVAL;
4657                 goto error;
4658         }
4659
4660         if (!netif_running(v)) {
4661                 ret = -ENETDOWN;
4662                 goto error;
4663         }
4664
4665         return v;
4666  error:
4667         dev_put(v);
4668         return ERR_PTR(ret);
4669 }
4670
4671 static const struct nla_policy
4672 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
4673         [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
4674         [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
4675 };
4676
4677 static int nl80211_parse_sta_wme(struct genl_info *info,
4678                                  struct station_parameters *params)
4679 {
4680         struct nlattr *tb[NL80211_STA_WME_MAX + 1];
4681         struct nlattr *nla;
4682         int err;
4683
4684         /* parse WME attributes if present */
4685         if (!info->attrs[NL80211_ATTR_STA_WME])
4686                 return 0;
4687
4688         nla = info->attrs[NL80211_ATTR_STA_WME];
4689         err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
4690                                nl80211_sta_wme_policy);
4691         if (err)
4692                 return err;
4693
4694         if (tb[NL80211_STA_WME_UAPSD_QUEUES])
4695                 params->uapsd_queues = nla_get_u8(
4696                         tb[NL80211_STA_WME_UAPSD_QUEUES]);
4697         if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
4698                 return -EINVAL;
4699
4700         if (tb[NL80211_STA_WME_MAX_SP])
4701                 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
4702
4703         if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
4704                 return -EINVAL;
4705
4706         params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
4707
4708         return 0;
4709 }
4710
4711 static int nl80211_parse_sta_channel_info(struct genl_info *info,
4712                                       struct station_parameters *params)
4713 {
4714         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
4715                 params->supported_channels =
4716                      nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4717                 params->supported_channels_len =
4718                      nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4719                 /*
4720                  * Need to include at least one (first channel, number of
4721                  * channels) tuple for each subband, and must have proper
4722                  * tuples for the rest of the data as well.
4723                  */
4724                 if (params->supported_channels_len < 2)
4725                         return -EINVAL;
4726                 if (params->supported_channels_len % 2)
4727                         return -EINVAL;
4728         }
4729
4730         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
4731                 params->supported_oper_classes =
4732                  nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4733                 params->supported_oper_classes_len =
4734                   nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4735                 /*
4736                  * The value of the Length field of the Supported Operating
4737                  * Classes element is between 2 and 253.
4738                  */
4739                 if (params->supported_oper_classes_len < 2 ||
4740                     params->supported_oper_classes_len > 253)
4741                         return -EINVAL;
4742         }
4743         return 0;
4744 }
4745
4746 static int nl80211_set_station_tdls(struct genl_info *info,
4747                                     struct station_parameters *params)
4748 {
4749         int err;
4750         /* Dummy STA entry gets updated once the peer capabilities are known */
4751         if (info->attrs[NL80211_ATTR_PEER_AID])
4752                 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4753         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4754                 params->ht_capa =
4755                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4756         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4757                 params->vht_capa =
4758                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4759
4760         err = nl80211_parse_sta_channel_info(info, params);
4761         if (err)
4762                 return err;
4763
4764         return nl80211_parse_sta_wme(info, params);
4765 }
4766
4767 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
4768 {
4769         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4770         struct net_device *dev = info->user_ptr[1];
4771         struct station_parameters params;
4772         u8 *mac_addr;
4773         int err;
4774
4775         memset(&params, 0, sizeof(params));
4776
4777         if (!rdev->ops->change_station)
4778                 return -EOPNOTSUPP;
4779
4780         /*
4781          * AID and listen_interval properties can be set only for unassociated
4782          * station. Include these parameters here and will check them in
4783          * cfg80211_check_station_change().
4784          */
4785         if (info->attrs[NL80211_ATTR_STA_AID])
4786                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
4787
4788         if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4789                 params.listen_interval =
4790                      nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4791         else
4792                 params.listen_interval = -1;
4793
4794         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
4795                 u8 tmp;
4796
4797                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
4798                 if (tmp >= NUM_NL80211_P2P_PS_STATUS)
4799                         return -EINVAL;
4800
4801                 params.support_p2p_ps = tmp;
4802         } else {
4803                 params.support_p2p_ps = -1;
4804         }
4805
4806         if (!info->attrs[NL80211_ATTR_MAC])
4807                 return -EINVAL;
4808
4809         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4810
4811         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
4812                 params.supported_rates =
4813                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4814                 params.supported_rates_len =
4815                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4816         }
4817
4818         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4819                 params.capability =
4820                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4821                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4822         }
4823
4824         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4825                 params.ext_capab =
4826                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4827                 params.ext_capab_len =
4828                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4829         }
4830
4831         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4832                 return -EINVAL;
4833
4834         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4835                 params.plink_action =
4836                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4837                 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4838                         return -EINVAL;
4839         }
4840
4841         if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
4842                 params.plink_state =
4843                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
4844                 if (params.plink_state >= NUM_NL80211_PLINK_STATES)
4845                         return -EINVAL;
4846                 if (info->attrs[NL80211_ATTR_MESH_PEER_AID]) {
4847                         params.peer_aid = nla_get_u16(
4848                                 info->attrs[NL80211_ATTR_MESH_PEER_AID]);
4849                         if (params.peer_aid > IEEE80211_MAX_AID)
4850                                 return -EINVAL;
4851                 }
4852                 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
4853         }
4854
4855         if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) {
4856                 enum nl80211_mesh_power_mode pm = nla_get_u32(
4857                         info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
4858
4859                 if (pm <= NL80211_MESH_POWER_UNKNOWN ||
4860                     pm > NL80211_MESH_POWER_MAX)
4861                         return -EINVAL;
4862
4863                 params.local_pm = pm;
4864         }
4865
4866         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
4867                 params.opmode_notif_used = true;
4868                 params.opmode_notif =
4869                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
4870         }
4871
4872         /* Include parameters for TDLS peer (will check later) */
4873         err = nl80211_set_station_tdls(info, &params);
4874         if (err)
4875                 return err;
4876
4877         params.vlan = get_vlan(info, rdev);
4878         if (IS_ERR(params.vlan))
4879                 return PTR_ERR(params.vlan);
4880
4881         switch (dev->ieee80211_ptr->iftype) {
4882         case NL80211_IFTYPE_AP:
4883         case NL80211_IFTYPE_AP_VLAN:
4884         case NL80211_IFTYPE_P2P_GO:
4885         case NL80211_IFTYPE_P2P_CLIENT:
4886         case NL80211_IFTYPE_STATION:
4887         case NL80211_IFTYPE_ADHOC:
4888         case NL80211_IFTYPE_MESH_POINT:
4889                 break;
4890         default:
4891                 err = -EOPNOTSUPP;
4892                 goto out_put_vlan;
4893         }
4894
4895         /* driver will call cfg80211_check_station_change() */
4896         err = rdev_change_station(rdev, dev, mac_addr, &params);
4897
4898  out_put_vlan:
4899         if (params.vlan)
4900                 dev_put(params.vlan);
4901
4902         return err;
4903 }
4904
4905 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
4906 {
4907         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4908         int err;
4909         struct net_device *dev = info->user_ptr[1];
4910         struct station_parameters params;
4911         u8 *mac_addr = NULL;
4912         u32 auth_assoc = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4913                          BIT(NL80211_STA_FLAG_ASSOCIATED);
4914
4915         memset(&params, 0, sizeof(params));
4916
4917         if (!rdev->ops->add_station)
4918                 return -EOPNOTSUPP;
4919
4920         if (!info->attrs[NL80211_ATTR_MAC])
4921                 return -EINVAL;
4922
4923         if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4924                 return -EINVAL;
4925
4926         if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
4927                 return -EINVAL;
4928
4929         if (!info->attrs[NL80211_ATTR_STA_AID] &&
4930             !info->attrs[NL80211_ATTR_PEER_AID])
4931                 return -EINVAL;
4932
4933         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4934         params.supported_rates =
4935                 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4936         params.supported_rates_len =
4937                 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4938         params.listen_interval =
4939                 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4940
4941         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
4942                 u8 tmp;
4943
4944                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
4945                 if (tmp >= NUM_NL80211_P2P_PS_STATUS)
4946                         return -EINVAL;
4947
4948                 params.support_p2p_ps = tmp;
4949         } else {
4950                 /*
4951                  * if not specified, assume it's supported for P2P GO interface,
4952                  * and is NOT supported for AP interface
4953                  */
4954                 params.support_p2p_ps =
4955                         dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO;
4956         }
4957
4958         if (info->attrs[NL80211_ATTR_PEER_AID])
4959                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4960         else
4961                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
4962         if (!params.aid || params.aid > IEEE80211_MAX_AID)
4963                 return -EINVAL;
4964
4965         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4966                 params.capability =
4967                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4968                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4969         }
4970
4971         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4972                 params.ext_capab =
4973                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4974                 params.ext_capab_len =
4975                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4976         }
4977
4978         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4979                 params.ht_capa =
4980                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4981
4982         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4983                 params.vht_capa =
4984                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4985
4986         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
4987                 params.opmode_notif_used = true;
4988                 params.opmode_notif =
4989                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
4990         }
4991
4992         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4993                 params.plink_action =
4994                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4995                 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4996                         return -EINVAL;
4997         }
4998
4999         err = nl80211_parse_sta_channel_info(info, &params);
5000         if (err)
5001                 return err;
5002
5003         err = nl80211_parse_sta_wme(info, &params);
5004         if (err)
5005                 return err;
5006
5007         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
5008                 return -EINVAL;
5009
5010         /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT
5011          * as userspace might just pass through the capabilities from the IEs
5012          * directly, rather than enforcing this restriction and returning an
5013          * error in this case.
5014          */
5015         if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {
5016                 params.ht_capa = NULL;
5017                 params.vht_capa = NULL;
5018         }
5019
5020         /* When you run into this, adjust the code below for the new flag */
5021         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
5022
5023         switch (dev->ieee80211_ptr->iftype) {
5024         case NL80211_IFTYPE_AP:
5025         case NL80211_IFTYPE_AP_VLAN:
5026         case NL80211_IFTYPE_P2P_GO:
5027                 /* ignore WME attributes if iface/sta is not capable */
5028                 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
5029                     !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
5030                         params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5031
5032                 /* TDLS peers cannot be added */
5033                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
5034                     info->attrs[NL80211_ATTR_PEER_AID])
5035                         return -EINVAL;
5036                 /* but don't bother the driver with it */
5037                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5038
5039                 /* allow authenticated/associated only if driver handles it */
5040                 if (!(rdev->wiphy.features &
5041                                 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
5042                     params.sta_flags_mask & auth_assoc)
5043                         return -EINVAL;
5044
5045                 /* Older userspace, or userspace wanting to be compatible with
5046                  * !NL80211_FEATURE_FULL_AP_CLIENT_STATE, will not set the auth
5047                  * and assoc flags in the mask, but assumes the station will be
5048                  * added as associated anyway since this was the required driver
5049                  * behaviour before NL80211_FEATURE_FULL_AP_CLIENT_STATE was
5050                  * introduced.
5051                  * In order to not bother drivers with this quirk in the API
5052                  * set the flags in both the mask and set for new stations in
5053                  * this case.
5054                  */
5055                 if (!(params.sta_flags_mask & auth_assoc)) {
5056                         params.sta_flags_mask |= auth_assoc;
5057                         params.sta_flags_set |= auth_assoc;
5058                 }
5059
5060                 /* must be last in here for error handling */
5061                 params.vlan = get_vlan(info, rdev);
5062                 if (IS_ERR(params.vlan))
5063                         return PTR_ERR(params.vlan);
5064                 break;
5065         case NL80211_IFTYPE_MESH_POINT:
5066                 /* ignore uAPSD data */
5067                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5068
5069                 /* associated is disallowed */
5070                 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
5071                         return -EINVAL;
5072                 /* TDLS peers cannot be added */
5073                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
5074                     info->attrs[NL80211_ATTR_PEER_AID])
5075                         return -EINVAL;
5076                 break;
5077         case NL80211_IFTYPE_STATION:
5078         case NL80211_IFTYPE_P2P_CLIENT:
5079                 /* ignore uAPSD data */
5080                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5081
5082                 /* these are disallowed */
5083                 if (params.sta_flags_mask &
5084                                 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
5085                                  BIT(NL80211_STA_FLAG_AUTHENTICATED)))
5086                         return -EINVAL;
5087                 /* Only TDLS peers can be added */
5088                 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
5089                         return -EINVAL;
5090                 /* Can only add if TDLS ... */
5091                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
5092                         return -EOPNOTSUPP;
5093                 /* ... with external setup is supported */
5094                 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
5095                         return -EOPNOTSUPP;
5096                 /*
5097                  * Older wpa_supplicant versions always mark the TDLS peer
5098                  * as authorized, but it shouldn't yet be.
5099                  */
5100                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
5101                 break;
5102         default:
5103                 return -EOPNOTSUPP;
5104         }
5105
5106         /* be aware of params.vlan when changing code here */
5107
5108         err = rdev_add_station(rdev, dev, mac_addr, &params);
5109
5110         if (params.vlan)
5111                 dev_put(params.vlan);
5112         return err;
5113 }
5114
5115 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
5116 {
5117         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5118         struct net_device *dev = info->user_ptr[1];
5119         struct station_del_parameters params;
5120
5121         memset(&params, 0, sizeof(params));
5122
5123         if (info->attrs[NL80211_ATTR_MAC])
5124                 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
5125
5126         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5127             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5128             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
5129             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5130                 return -EINVAL;
5131
5132         if (!rdev->ops->del_station)
5133                 return -EOPNOTSUPP;
5134
5135         if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
5136                 params.subtype =
5137                         nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
5138                 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
5139                     params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
5140                         return -EINVAL;
5141         } else {
5142                 /* Default to Deauthentication frame */
5143                 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
5144         }
5145
5146         if (info->attrs[NL80211_ATTR_REASON_CODE]) {
5147                 params.reason_code =
5148                         nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
5149                 if (params.reason_code == 0)
5150                         return -EINVAL; /* 0 is reserved */
5151         } else {
5152                 /* Default to reason code 2 */
5153                 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
5154         }
5155
5156         return rdev_del_station(rdev, dev, &params);
5157 }
5158
5159 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
5160                                 int flags, struct net_device *dev,
5161                                 u8 *dst, u8 *next_hop,
5162                                 struct mpath_info *pinfo)
5163 {
5164         void *hdr;
5165         struct nlattr *pinfoattr;
5166
5167         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
5168         if (!hdr)
5169                 return -1;
5170
5171         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5172             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
5173             nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
5174             nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
5175                 goto nla_put_failure;
5176
5177         pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
5178         if (!pinfoattr)
5179                 goto nla_put_failure;
5180         if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
5181             nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
5182                         pinfo->frame_qlen))
5183                 goto nla_put_failure;
5184         if (((pinfo->filled & MPATH_INFO_SN) &&
5185              nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
5186             ((pinfo->filled & MPATH_INFO_METRIC) &&
5187              nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
5188                          pinfo->metric)) ||
5189             ((pinfo->filled & MPATH_INFO_EXPTIME) &&
5190              nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
5191                          pinfo->exptime)) ||
5192             ((pinfo->filled & MPATH_INFO_FLAGS) &&
5193              nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
5194                         pinfo->flags)) ||
5195             ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
5196              nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
5197                          pinfo->discovery_timeout)) ||
5198             ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
5199              nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
5200                         pinfo->discovery_retries)))
5201                 goto nla_put_failure;
5202
5203         nla_nest_end(msg, pinfoattr);
5204
5205         genlmsg_end(msg, hdr);
5206         return 0;
5207
5208  nla_put_failure:
5209         genlmsg_cancel(msg, hdr);
5210         return -EMSGSIZE;
5211 }
5212
5213 static int nl80211_dump_mpath(struct sk_buff *skb,
5214                               struct netlink_callback *cb)
5215 {
5216         struct mpath_info pinfo;
5217         struct cfg80211_registered_device *rdev;
5218         struct wireless_dev *wdev;
5219         u8 dst[ETH_ALEN];
5220         u8 next_hop[ETH_ALEN];
5221         int path_idx = cb->args[2];
5222         int err;
5223
5224         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
5225         if (err)
5226                 return err;
5227
5228         if (!rdev->ops->dump_mpath) {
5229                 err = -EOPNOTSUPP;
5230                 goto out_err;
5231         }
5232
5233         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
5234                 err = -EOPNOTSUPP;
5235                 goto out_err;
5236         }
5237
5238         while (1) {
5239                 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
5240                                       next_hop, &pinfo);
5241                 if (err == -ENOENT)
5242                         break;
5243                 if (err)
5244                         goto out_err;
5245
5246                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
5247                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
5248                                        wdev->netdev, dst, next_hop,
5249                                        &pinfo) < 0)
5250                         goto out;
5251
5252                 path_idx++;
5253         }
5254
5255  out:
5256         cb->args[2] = path_idx;
5257         err = skb->len;
5258  out_err:
5259         nl80211_finish_wdev_dump(rdev);
5260         return err;
5261 }
5262
5263 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
5264 {
5265         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5266         int err;
5267         struct net_device *dev = info->user_ptr[1];
5268         struct mpath_info pinfo;
5269         struct sk_buff *msg;
5270         u8 *dst = NULL;
5271         u8 next_hop[ETH_ALEN];
5272
5273         memset(&pinfo, 0, sizeof(pinfo));
5274
5275         if (!info->attrs[NL80211_ATTR_MAC])
5276                 return -EINVAL;
5277
5278         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5279
5280         if (!rdev->ops->get_mpath)
5281                 return -EOPNOTSUPP;
5282
5283         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5284                 return -EOPNOTSUPP;
5285
5286         err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
5287         if (err)
5288                 return err;
5289
5290         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5291         if (!msg)
5292                 return -ENOMEM;
5293
5294         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
5295                                  dev, dst, next_hop, &pinfo) < 0) {
5296                 nlmsg_free(msg);
5297                 return -ENOBUFS;
5298         }
5299
5300         return genlmsg_reply(msg, info);
5301 }
5302
5303 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
5304 {
5305         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5306         struct net_device *dev = info->user_ptr[1];
5307         u8 *dst = NULL;
5308         u8 *next_hop = NULL;
5309
5310         if (!info->attrs[NL80211_ATTR_MAC])
5311                 return -EINVAL;
5312
5313         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
5314                 return -EINVAL;
5315
5316         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5317         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
5318
5319         if (!rdev->ops->change_mpath)
5320                 return -EOPNOTSUPP;
5321
5322         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5323                 return -EOPNOTSUPP;
5324
5325         return rdev_change_mpath(rdev, dev, dst, next_hop);
5326 }
5327
5328 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
5329 {
5330         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5331         struct net_device *dev = info->user_ptr[1];
5332         u8 *dst = NULL;
5333         u8 *next_hop = NULL;
5334
5335         if (!info->attrs[NL80211_ATTR_MAC])
5336                 return -EINVAL;
5337
5338         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
5339                 return -EINVAL;
5340
5341         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5342         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
5343
5344         if (!rdev->ops->add_mpath)
5345                 return -EOPNOTSUPP;
5346
5347         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5348                 return -EOPNOTSUPP;
5349
5350         return rdev_add_mpath(rdev, dev, dst, next_hop);
5351 }
5352
5353 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
5354 {
5355         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5356         struct net_device *dev = info->user_ptr[1];
5357         u8 *dst = NULL;
5358
5359         if (info->attrs[NL80211_ATTR_MAC])
5360                 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5361
5362         if (!rdev->ops->del_mpath)
5363                 return -EOPNOTSUPP;
5364
5365         return rdev_del_mpath(rdev, dev, dst);
5366 }
5367
5368 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
5369 {
5370         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5371         int err;
5372         struct net_device *dev = info->user_ptr[1];
5373         struct mpath_info pinfo;
5374         struct sk_buff *msg;
5375         u8 *dst = NULL;
5376         u8 mpp[ETH_ALEN];
5377
5378         memset(&pinfo, 0, sizeof(pinfo));
5379
5380         if (!info->attrs[NL80211_ATTR_MAC])
5381                 return -EINVAL;
5382
5383         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5384
5385         if (!rdev->ops->get_mpp)
5386                 return -EOPNOTSUPP;
5387
5388         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5389                 return -EOPNOTSUPP;
5390
5391         err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
5392         if (err)
5393                 return err;
5394
5395         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5396         if (!msg)
5397                 return -ENOMEM;
5398
5399         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
5400                                dev, dst, mpp, &pinfo) < 0) {
5401                 nlmsg_free(msg);
5402                 return -ENOBUFS;
5403         }
5404
5405         return genlmsg_reply(msg, info);
5406 }
5407
5408 static int nl80211_dump_mpp(struct sk_buff *skb,
5409                             struct netlink_callback *cb)
5410 {
5411         struct mpath_info pinfo;
5412         struct cfg80211_registered_device *rdev;
5413         struct wireless_dev *wdev;
5414         u8 dst[ETH_ALEN];
5415         u8 mpp[ETH_ALEN];
5416         int path_idx = cb->args[2];
5417         int err;
5418
5419         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
5420         if (err)
5421                 return err;
5422
5423         if (!rdev->ops->dump_mpp) {
5424                 err = -EOPNOTSUPP;
5425                 goto out_err;
5426         }
5427
5428         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
5429                 err = -EOPNOTSUPP;
5430                 goto out_err;
5431         }
5432
5433         while (1) {
5434                 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
5435                                     mpp, &pinfo);
5436                 if (err == -ENOENT)
5437                         break;
5438                 if (err)
5439                         goto out_err;
5440
5441                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
5442                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
5443                                        wdev->netdev, dst, mpp,
5444                                        &pinfo) < 0)
5445                         goto out;
5446
5447                 path_idx++;
5448         }
5449
5450  out:
5451         cb->args[2] = path_idx;
5452         err = skb->len;
5453  out_err:
5454         nl80211_finish_wdev_dump(rdev);
5455         return err;
5456 }
5457
5458 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
5459 {
5460         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5461         struct net_device *dev = info->user_ptr[1];
5462         struct wireless_dev *wdev = dev->ieee80211_ptr;
5463         struct bss_parameters params;
5464         int err;
5465
5466         memset(&params, 0, sizeof(params));
5467         /* default to not changing parameters */
5468         params.use_cts_prot = -1;
5469         params.use_short_preamble = -1;
5470         params.use_short_slot_time = -1;
5471         params.ap_isolate = -1;
5472         params.ht_opmode = -1;
5473         params.p2p_ctwindow = -1;
5474         params.p2p_opp_ps = -1;
5475
5476         if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
5477                 params.use_cts_prot =
5478                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
5479         if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
5480                 params.use_short_preamble =
5481                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
5482         if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
5483                 params.use_short_slot_time =
5484                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
5485         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
5486                 params.basic_rates =
5487                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
5488                 params.basic_rates_len =
5489                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
5490         }
5491         if (info->attrs[NL80211_ATTR_AP_ISOLATE])
5492                 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
5493         if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
5494                 params.ht_opmode =
5495                         nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
5496
5497         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
5498                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5499                         return -EINVAL;
5500                 params.p2p_ctwindow =
5501                         nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
5502                 if (params.p2p_ctwindow < 0)
5503                         return -EINVAL;
5504                 if (params.p2p_ctwindow != 0 &&
5505                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
5506                         return -EINVAL;
5507         }
5508
5509         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
5510                 u8 tmp;
5511
5512                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5513                         return -EINVAL;
5514                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
5515                 if (tmp > 1)
5516                         return -EINVAL;
5517                 params.p2p_opp_ps = tmp;
5518                 if (params.p2p_opp_ps &&
5519                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
5520                         return -EINVAL;
5521         }
5522
5523         if (!rdev->ops->change_bss)
5524                 return -EOPNOTSUPP;
5525
5526         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5527             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5528                 return -EOPNOTSUPP;
5529
5530         wdev_lock(wdev);
5531         err = rdev_change_bss(rdev, dev, &params);
5532         wdev_unlock(wdev);
5533
5534         return err;
5535 }
5536
5537 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
5538 {
5539         char *data = NULL;
5540         bool is_indoor;
5541         enum nl80211_user_reg_hint_type user_reg_hint_type;
5542         u32 owner_nlportid;
5543
5544         /*
5545          * You should only get this when cfg80211 hasn't yet initialized
5546          * completely when built-in to the kernel right between the time
5547          * window between nl80211_init() and regulatory_init(), if that is
5548          * even possible.
5549          */
5550         if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
5551                 return -EINPROGRESS;
5552
5553         if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
5554                 user_reg_hint_type =
5555                   nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
5556         else
5557                 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
5558
5559         switch (user_reg_hint_type) {
5560         case NL80211_USER_REG_HINT_USER:
5561         case NL80211_USER_REG_HINT_CELL_BASE:
5562                 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
5563                         return -EINVAL;
5564
5565                 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5566                 return regulatory_hint_user(data, user_reg_hint_type);
5567         case NL80211_USER_REG_HINT_INDOOR:
5568                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
5569                         owner_nlportid = info->snd_portid;
5570                         is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR];
5571                 } else {
5572                         owner_nlportid = 0;
5573                         is_indoor = true;
5574                 }
5575
5576                 return regulatory_hint_indoor(is_indoor, owner_nlportid);
5577         default:
5578                 return -EINVAL;
5579         }
5580 }
5581
5582 static int nl80211_get_mesh_config(struct sk_buff *skb,
5583                                    struct genl_info *info)
5584 {
5585         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5586         struct net_device *dev = info->user_ptr[1];
5587         struct wireless_dev *wdev = dev->ieee80211_ptr;
5588         struct mesh_config cur_params;
5589         int err = 0;
5590         void *hdr;
5591         struct nlattr *pinfoattr;
5592         struct sk_buff *msg;
5593
5594         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
5595                 return -EOPNOTSUPP;
5596
5597         if (!rdev->ops->get_mesh_config)
5598                 return -EOPNOTSUPP;
5599
5600         wdev_lock(wdev);
5601         /* If not connected, get default parameters */
5602         if (!wdev->mesh_id_len)
5603                 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
5604         else
5605                 err = rdev_get_mesh_config(rdev, dev, &cur_params);
5606         wdev_unlock(wdev);
5607
5608         if (err)
5609                 return err;
5610
5611         /* Draw up a netlink message to send back */
5612         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5613         if (!msg)
5614                 return -ENOMEM;
5615         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5616                              NL80211_CMD_GET_MESH_CONFIG);
5617         if (!hdr)
5618                 goto out;
5619         pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
5620         if (!pinfoattr)
5621                 goto nla_put_failure;
5622         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5623             nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
5624                         cur_params.dot11MeshRetryTimeout) ||
5625             nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5626                         cur_params.dot11MeshConfirmTimeout) ||
5627             nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
5628                         cur_params.dot11MeshHoldingTimeout) ||
5629             nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
5630                         cur_params.dot11MeshMaxPeerLinks) ||
5631             nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
5632                        cur_params.dot11MeshMaxRetries) ||
5633             nla_put_u8(msg, NL80211_MESHCONF_TTL,
5634                        cur_params.dot11MeshTTL) ||
5635             nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
5636                        cur_params.element_ttl) ||
5637             nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5638                        cur_params.auto_open_plinks) ||
5639             nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5640                         cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
5641             nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5642                        cur_params.dot11MeshHWMPmaxPREQretries) ||
5643             nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
5644                         cur_params.path_refresh_time) ||
5645             nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5646                         cur_params.min_discovery_timeout) ||
5647             nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5648                         cur_params.dot11MeshHWMPactivePathTimeout) ||
5649             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5650                         cur_params.dot11MeshHWMPpreqMinInterval) ||
5651             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5652                         cur_params.dot11MeshHWMPperrMinInterval) ||
5653             nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5654                         cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
5655             nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
5656                        cur_params.dot11MeshHWMPRootMode) ||
5657             nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5658                         cur_params.dot11MeshHWMPRannInterval) ||
5659             nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5660                        cur_params.dot11MeshGateAnnouncementProtocol) ||
5661             nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
5662                        cur_params.dot11MeshForwarding) ||
5663             nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
5664                         cur_params.rssi_threshold) ||
5665             nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
5666                         cur_params.ht_opmode) ||
5667             nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5668                         cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
5669             nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5670                         cur_params.dot11MeshHWMProotInterval) ||
5671             nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5672                         cur_params.dot11MeshHWMPconfirmationInterval) ||
5673             nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
5674                         cur_params.power_mode) ||
5675             nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
5676                         cur_params.dot11MeshAwakeWindowDuration) ||
5677             nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
5678                         cur_params.plink_timeout))
5679                 goto nla_put_failure;
5680         nla_nest_end(msg, pinfoattr);
5681         genlmsg_end(msg, hdr);
5682         return genlmsg_reply(msg, info);
5683
5684  nla_put_failure:
5685         genlmsg_cancel(msg, hdr);
5686  out:
5687         nlmsg_free(msg);
5688         return -ENOBUFS;
5689 }
5690
5691 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
5692         [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
5693         [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
5694         [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
5695         [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
5696         [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
5697         [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
5698         [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
5699         [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
5700         [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
5701         [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
5702         [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
5703         [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
5704         [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
5705         [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
5706         [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
5707         [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
5708         [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
5709         [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
5710         [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
5711         [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
5712         [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
5713         [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
5714         [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
5715         [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
5716         [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
5717         [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 },
5718         [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
5719         [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
5720 };
5721
5722 static const struct nla_policy
5723         nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
5724         [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
5725         [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
5726         [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
5727         [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
5728         [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
5729         [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
5730         [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
5731                                     .len = IEEE80211_MAX_DATA_LEN },
5732         [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
5733 };
5734
5735 static int nl80211_check_bool(const struct nlattr *nla, u8 min, u8 max, bool *out)
5736 {
5737         u8 val = nla_get_u8(nla);
5738         if (val < min || val > max)
5739                 return -EINVAL;
5740         *out = val;
5741         return 0;
5742 }
5743
5744 static int nl80211_check_u8(const struct nlattr *nla, u8 min, u8 max, u8 *out)
5745 {
5746         u8 val = nla_get_u8(nla);
5747         if (val < min || val > max)
5748                 return -EINVAL;
5749         *out = val;
5750         return 0;
5751 }
5752
5753 static int nl80211_check_u16(const struct nlattr *nla, u16 min, u16 max, u16 *out)
5754 {
5755         u16 val = nla_get_u16(nla);
5756         if (val < min || val > max)
5757                 return -EINVAL;
5758         *out = val;
5759         return 0;
5760 }
5761
5762 static int nl80211_check_u32(const struct nlattr *nla, u32 min, u32 max, u32 *out)
5763 {
5764         u32 val = nla_get_u32(nla);
5765         if (val < min || val > max)
5766                 return -EINVAL;
5767         *out = val;
5768         return 0;
5769 }
5770
5771 static int nl80211_check_s32(const struct nlattr *nla, s32 min, s32 max, s32 *out)
5772 {
5773         s32 val = nla_get_s32(nla);
5774         if (val < min || val > max)
5775                 return -EINVAL;
5776         *out = val;
5777         return 0;
5778 }
5779
5780 static int nl80211_check_power_mode(const struct nlattr *nla,
5781                                     enum nl80211_mesh_power_mode min,
5782                                     enum nl80211_mesh_power_mode max,
5783                                     enum nl80211_mesh_power_mode *out)
5784 {
5785         u32 val = nla_get_u32(nla);
5786         if (val < min || val > max)
5787                 return -EINVAL;
5788         *out = val;
5789         return 0;
5790 }
5791
5792 static int nl80211_parse_mesh_config(struct genl_info *info,
5793                                      struct mesh_config *cfg,
5794                                      u32 *mask_out)
5795 {
5796         struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
5797         u32 mask = 0;
5798         u16 ht_opmode;
5799
5800 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \
5801 do {                                                                        \
5802         if (tb[attr]) {                                                     \
5803                 if (fn(tb[attr], min, max, &cfg->param))                    \
5804                         return -EINVAL;                                     \
5805                 mask |= (1 << (attr - 1));                                  \
5806         }                                                                   \
5807 } while (0)
5808
5809         if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
5810                 return -EINVAL;
5811         if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
5812                              info->attrs[NL80211_ATTR_MESH_CONFIG],
5813                              nl80211_meshconf_params_policy))
5814                 return -EINVAL;
5815
5816         /* This makes sure that there aren't more than 32 mesh config
5817          * parameters (otherwise our bitfield scheme would not work.) */
5818         BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
5819
5820         /* Fill in the params struct */
5821         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255,
5822                                   mask, NL80211_MESHCONF_RETRY_TIMEOUT,
5823                                   nl80211_check_u16);
5824         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255,
5825                                   mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5826                                   nl80211_check_u16);
5827         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255,
5828                                   mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
5829                                   nl80211_check_u16);
5830         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255,
5831                                   mask, NL80211_MESHCONF_MAX_PEER_LINKS,
5832                                   nl80211_check_u16);
5833         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16,
5834                                   mask, NL80211_MESHCONF_MAX_RETRIES,
5835                                   nl80211_check_u8);
5836         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255,
5837                                   mask, NL80211_MESHCONF_TTL, nl80211_check_u8);
5838         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255,
5839                                   mask, NL80211_MESHCONF_ELEMENT_TTL,
5840                                   nl80211_check_u8);
5841         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1,
5842                                   mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5843                                   nl80211_check_bool);
5844         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
5845                                   1, 255, mask,
5846                                   NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5847                                   nl80211_check_u32);
5848         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255,
5849                                   mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5850                                   nl80211_check_u8);
5851         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535,
5852                                   mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
5853                                   nl80211_check_u32);
5854         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535,
5855                                   mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5856                                   nl80211_check_u16);
5857         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
5858                                   1, 65535, mask,
5859                                   NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5860                                   nl80211_check_u32);
5861         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
5862                                   1, 65535, mask,
5863                                   NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5864                                   nl80211_check_u16);
5865         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
5866                                   1, 65535, mask,
5867                                   NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5868                                   nl80211_check_u16);
5869         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5870                                   dot11MeshHWMPnetDiameterTraversalTime,
5871                                   1, 65535, mask,
5872                                   NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5873                                   nl80211_check_u16);
5874         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4,
5875                                   mask, NL80211_MESHCONF_HWMP_ROOTMODE,
5876                                   nl80211_check_u8);
5877         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535,
5878                                   mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5879                                   nl80211_check_u16);
5880         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5881                                   dot11MeshGateAnnouncementProtocol, 0, 1,
5882                                   mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5883                                   nl80211_check_bool);
5884         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1,
5885                                   mask, NL80211_MESHCONF_FORWARDING,
5886                                   nl80211_check_bool);
5887         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, -255, 0,
5888                                   mask, NL80211_MESHCONF_RSSI_THRESHOLD,
5889                                   nl80211_check_s32);
5890         /*
5891          * Check HT operation mode based on
5892          * IEEE 802.11 2012 8.4.2.59 HT Operation element.
5893          */
5894         if (tb[NL80211_MESHCONF_HT_OPMODE]) {
5895                 ht_opmode = nla_get_u16(tb[NL80211_MESHCONF_HT_OPMODE]);
5896
5897                 if (ht_opmode & ~(IEEE80211_HT_OP_MODE_PROTECTION |
5898                                   IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT |
5899                                   IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
5900                         return -EINVAL;
5901
5902                 if ((ht_opmode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT) &&
5903                     (ht_opmode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
5904                         return -EINVAL;
5905
5906                 switch (ht_opmode & IEEE80211_HT_OP_MODE_PROTECTION) {
5907                 case IEEE80211_HT_OP_MODE_PROTECTION_NONE:
5908                 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
5909                         if (ht_opmode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT)
5910                                 return -EINVAL;
5911                         break;
5912                 case IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER:
5913                 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
5914                         if (!(ht_opmode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
5915                                 return -EINVAL;
5916                         break;
5917                 }
5918                 cfg->ht_opmode = ht_opmode;
5919                 mask |= (1 << (NL80211_MESHCONF_HT_OPMODE - 1));
5920         }
5921         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
5922                                   1, 65535, mask,
5923                                   NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5924                                   nl80211_check_u32);
5925         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535,
5926                                   mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5927                                   nl80211_check_u16);
5928         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5929                                   dot11MeshHWMPconfirmationInterval,
5930                                   1, 65535, mask,
5931                                   NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5932                                   nl80211_check_u16);
5933         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode,
5934                                   NL80211_MESH_POWER_ACTIVE,
5935                                   NL80211_MESH_POWER_MAX,
5936                                   mask, NL80211_MESHCONF_POWER_MODE,
5937                                   nl80211_check_power_mode);
5938         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration,
5939                                   0, 65535, mask,
5940                                   NL80211_MESHCONF_AWAKE_WINDOW, nl80211_check_u16);
5941         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 0, 0xffffffff,
5942                                   mask, NL80211_MESHCONF_PLINK_TIMEOUT,
5943                                   nl80211_check_u32);
5944         if (mask_out)
5945                 *mask_out = mask;
5946
5947         return 0;
5948
5949 #undef FILL_IN_MESH_PARAM_IF_SET
5950 }
5951
5952 static int nl80211_parse_mesh_setup(struct genl_info *info,
5953                                      struct mesh_setup *setup)
5954 {
5955         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5956         struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
5957
5958         if (!info->attrs[NL80211_ATTR_MESH_SETUP])
5959                 return -EINVAL;
5960         if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
5961                              info->attrs[NL80211_ATTR_MESH_SETUP],
5962                              nl80211_mesh_setup_params_policy))
5963                 return -EINVAL;
5964
5965         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
5966                 setup->sync_method =
5967                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
5968                  IEEE80211_SYNC_METHOD_VENDOR :
5969                  IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
5970
5971         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
5972                 setup->path_sel_proto =
5973                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
5974                  IEEE80211_PATH_PROTOCOL_VENDOR :
5975                  IEEE80211_PATH_PROTOCOL_HWMP;
5976
5977         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
5978                 setup->path_metric =
5979                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
5980                  IEEE80211_PATH_METRIC_VENDOR :
5981                  IEEE80211_PATH_METRIC_AIRTIME;
5982
5983         if (tb[NL80211_MESH_SETUP_IE]) {
5984                 struct nlattr *ieattr =
5985                         tb[NL80211_MESH_SETUP_IE];
5986                 if (!is_valid_ie_attr(ieattr))
5987                         return -EINVAL;
5988                 setup->ie = nla_data(ieattr);
5989                 setup->ie_len = nla_len(ieattr);
5990         }
5991         if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
5992             !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
5993                 return -EINVAL;
5994         setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
5995         setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
5996         setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
5997         if (setup->is_secure)
5998                 setup->user_mpm = true;
5999
6000         if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
6001                 if (!setup->user_mpm)
6002                         return -EINVAL;
6003                 setup->auth_id =
6004                         nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
6005         }
6006
6007         return 0;
6008 }
6009
6010 static int nl80211_update_mesh_config(struct sk_buff *skb,
6011                                       struct genl_info *info)
6012 {
6013         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6014         struct net_device *dev = info->user_ptr[1];
6015         struct wireless_dev *wdev = dev->ieee80211_ptr;
6016         struct mesh_config cfg;
6017         u32 mask;
6018         int err;
6019
6020         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
6021                 return -EOPNOTSUPP;
6022
6023         if (!rdev->ops->update_mesh_config)
6024                 return -EOPNOTSUPP;
6025
6026         err = nl80211_parse_mesh_config(info, &cfg, &mask);
6027         if (err)
6028                 return err;
6029
6030         wdev_lock(wdev);
6031         if (!wdev->mesh_id_len)
6032                 err = -ENOLINK;
6033
6034         if (!err)
6035                 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
6036
6037         wdev_unlock(wdev);
6038
6039         return err;
6040 }
6041
6042 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
6043                               struct sk_buff *msg)
6044 {
6045         struct nlattr *nl_reg_rules;
6046         unsigned int i;
6047
6048         if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
6049             (regdom->dfs_region &&
6050              nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
6051                 goto nla_put_failure;
6052
6053         nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
6054         if (!nl_reg_rules)
6055                 goto nla_put_failure;
6056
6057         for (i = 0; i < regdom->n_reg_rules; i++) {
6058                 struct nlattr *nl_reg_rule;
6059                 const struct ieee80211_reg_rule *reg_rule;
6060                 const struct ieee80211_freq_range *freq_range;
6061                 const struct ieee80211_power_rule *power_rule;
6062                 unsigned int max_bandwidth_khz;
6063
6064                 reg_rule = &regdom->reg_rules[i];
6065                 freq_range = &reg_rule->freq_range;
6066                 power_rule = &reg_rule->power_rule;
6067
6068                 nl_reg_rule = nla_nest_start(msg, i);
6069                 if (!nl_reg_rule)
6070                         goto nla_put_failure;
6071
6072                 max_bandwidth_khz = freq_range->max_bandwidth_khz;
6073                 if (!max_bandwidth_khz)
6074                         max_bandwidth_khz = reg_get_max_bandwidth(regdom,
6075                                                                   reg_rule);
6076
6077                 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
6078                                 reg_rule->flags) ||
6079                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
6080                                 freq_range->start_freq_khz) ||
6081                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
6082                                 freq_range->end_freq_khz) ||
6083                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
6084                                 max_bandwidth_khz) ||
6085                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
6086                                 power_rule->max_antenna_gain) ||
6087                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
6088                                 power_rule->max_eirp) ||
6089                     nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
6090                                 reg_rule->dfs_cac_ms))
6091                         goto nla_put_failure;
6092
6093                 nla_nest_end(msg, nl_reg_rule);
6094         }
6095
6096         nla_nest_end(msg, nl_reg_rules);
6097         return 0;
6098
6099 nla_put_failure:
6100         return -EMSGSIZE;
6101 }
6102
6103 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
6104 {
6105         const struct ieee80211_regdomain *regdom = NULL;
6106         struct cfg80211_registered_device *rdev;
6107         struct wiphy *wiphy = NULL;
6108         struct sk_buff *msg;
6109         void *hdr;
6110
6111         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6112         if (!msg)
6113                 return -ENOBUFS;
6114
6115         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
6116                              NL80211_CMD_GET_REG);
6117         if (!hdr)
6118                 goto put_failure;
6119
6120         if (info->attrs[NL80211_ATTR_WIPHY]) {
6121                 bool self_managed;
6122
6123                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
6124                 if (IS_ERR(rdev)) {
6125                         nlmsg_free(msg);
6126                         return PTR_ERR(rdev);
6127                 }
6128
6129                 wiphy = &rdev->wiphy;
6130                 self_managed = wiphy->regulatory_flags &
6131                                REGULATORY_WIPHY_SELF_MANAGED;
6132                 regdom = get_wiphy_regdom(wiphy);
6133
6134                 /* a self-managed-reg device must have a private regdom */
6135                 if (WARN_ON(!regdom && self_managed)) {
6136                         nlmsg_free(msg);
6137                         return -EINVAL;
6138                 }
6139
6140                 if (regdom &&
6141                     nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
6142                         goto nla_put_failure;
6143         }
6144
6145         if (!wiphy && reg_last_request_cell_base() &&
6146             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
6147                         NL80211_USER_REG_HINT_CELL_BASE))
6148                 goto nla_put_failure;
6149
6150         rcu_read_lock();
6151
6152         if (!regdom)
6153                 regdom = rcu_dereference(cfg80211_regdomain);
6154
6155         if (nl80211_put_regdom(regdom, msg))
6156                 goto nla_put_failure_rcu;
6157
6158         rcu_read_unlock();
6159
6160         genlmsg_end(msg, hdr);
6161         return genlmsg_reply(msg, info);
6162
6163 nla_put_failure_rcu:
6164         rcu_read_unlock();
6165 nla_put_failure:
6166         genlmsg_cancel(msg, hdr);
6167 put_failure:
6168         nlmsg_free(msg);
6169         return -EMSGSIZE;
6170 }
6171
6172 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
6173                                u32 seq, int flags, struct wiphy *wiphy,
6174                                const struct ieee80211_regdomain *regdom)
6175 {
6176         void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
6177                                    NL80211_CMD_GET_REG);
6178
6179         if (!hdr)
6180                 return -1;
6181
6182         genl_dump_check_consistent(cb, hdr, &nl80211_fam);
6183
6184         if (nl80211_put_regdom(regdom, msg))
6185                 goto nla_put_failure;
6186
6187         if (!wiphy && reg_last_request_cell_base() &&
6188             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
6189                         NL80211_USER_REG_HINT_CELL_BASE))
6190                 goto nla_put_failure;
6191
6192         if (wiphy &&
6193             nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
6194                 goto nla_put_failure;
6195
6196         if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
6197             nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
6198                 goto nla_put_failure;
6199
6200         genlmsg_end(msg, hdr);
6201         return 0;
6202
6203 nla_put_failure:
6204         genlmsg_cancel(msg, hdr);
6205         return -EMSGSIZE;
6206 }
6207
6208 static int nl80211_get_reg_dump(struct sk_buff *skb,
6209                                 struct netlink_callback *cb)
6210 {
6211         const struct ieee80211_regdomain *regdom = NULL;
6212         struct cfg80211_registered_device *rdev;
6213         int err, reg_idx, start = cb->args[2];
6214
6215         rtnl_lock();
6216
6217         if (cfg80211_regdomain && start == 0) {
6218                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
6219                                           NLM_F_MULTI, NULL,
6220                                           rtnl_dereference(cfg80211_regdomain));
6221                 if (err < 0)
6222                         goto out_err;
6223         }
6224
6225         /* the global regdom is idx 0 */
6226         reg_idx = 1;
6227         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
6228                 regdom = get_wiphy_regdom(&rdev->wiphy);
6229                 if (!regdom)
6230                         continue;
6231
6232                 if (++reg_idx <= start)
6233                         continue;
6234
6235                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
6236                                           NLM_F_MULTI, &rdev->wiphy, regdom);
6237                 if (err < 0) {
6238                         reg_idx--;
6239                         break;
6240                 }
6241         }
6242
6243         cb->args[2] = reg_idx;
6244         err = skb->len;
6245 out_err:
6246         rtnl_unlock();
6247         return err;
6248 }
6249
6250 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
6251 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
6252         [NL80211_ATTR_REG_RULE_FLAGS]           = { .type = NLA_U32 },
6253         [NL80211_ATTR_FREQ_RANGE_START]         = { .type = NLA_U32 },
6254         [NL80211_ATTR_FREQ_RANGE_END]           = { .type = NLA_U32 },
6255         [NL80211_ATTR_FREQ_RANGE_MAX_BW]        = { .type = NLA_U32 },
6256         [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]  = { .type = NLA_U32 },
6257         [NL80211_ATTR_POWER_RULE_MAX_EIRP]      = { .type = NLA_U32 },
6258         [NL80211_ATTR_DFS_CAC_TIME]             = { .type = NLA_U32 },
6259 };
6260
6261 static int parse_reg_rule(struct nlattr *tb[],
6262         struct ieee80211_reg_rule *reg_rule)
6263 {
6264         struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
6265         struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
6266
6267         if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
6268                 return -EINVAL;
6269         if (!tb[NL80211_ATTR_FREQ_RANGE_START])
6270                 return -EINVAL;
6271         if (!tb[NL80211_ATTR_FREQ_RANGE_END])
6272                 return -EINVAL;
6273         if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
6274                 return -EINVAL;
6275         if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
6276                 return -EINVAL;
6277
6278         reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
6279
6280         freq_range->start_freq_khz =
6281                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
6282         freq_range->end_freq_khz =
6283                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
6284         freq_range->max_bandwidth_khz =
6285                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
6286
6287         power_rule->max_eirp =
6288                 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
6289
6290         if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
6291                 power_rule->max_antenna_gain =
6292                         nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
6293
6294         if (tb[NL80211_ATTR_DFS_CAC_TIME])
6295                 reg_rule->dfs_cac_ms =
6296                         nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
6297
6298         return 0;
6299 }
6300
6301 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
6302 {
6303         struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
6304         struct nlattr *nl_reg_rule;
6305         char *alpha2;
6306         int rem_reg_rules, r;
6307         u32 num_rules = 0, rule_idx = 0, size_of_regd;
6308         enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
6309         struct ieee80211_regdomain *rd;
6310
6311         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
6312                 return -EINVAL;
6313
6314         if (!info->attrs[NL80211_ATTR_REG_RULES])
6315                 return -EINVAL;
6316
6317         alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
6318
6319         if (info->attrs[NL80211_ATTR_DFS_REGION])
6320                 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
6321
6322         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
6323                             rem_reg_rules) {
6324                 num_rules++;
6325                 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
6326                         return -EINVAL;
6327         }
6328
6329         if (!reg_is_valid_request(alpha2))
6330                 return -EINVAL;
6331
6332         size_of_regd = sizeof(struct ieee80211_regdomain) +
6333                        num_rules * sizeof(struct ieee80211_reg_rule);
6334
6335         rd = kzalloc(size_of_regd, GFP_KERNEL);
6336         if (!rd)
6337                 return -ENOMEM;
6338
6339         rd->n_reg_rules = num_rules;
6340         rd->alpha2[0] = alpha2[0];
6341         rd->alpha2[1] = alpha2[1];
6342
6343         /*
6344          * Disable DFS master mode if the DFS region was
6345          * not supported or known on this kernel.
6346          */
6347         if (reg_supported_dfs_region(dfs_region))
6348                 rd->dfs_region = dfs_region;
6349
6350         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
6351                             rem_reg_rules) {
6352                 r = nla_parse_nested(tb, NL80211_REG_RULE_ATTR_MAX,
6353                                      nl_reg_rule, reg_rule_policy);
6354                 if (r)
6355                         goto bad_reg;
6356                 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
6357                 if (r)
6358                         goto bad_reg;
6359
6360                 rule_idx++;
6361
6362                 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
6363                         r = -EINVAL;
6364                         goto bad_reg;
6365                 }
6366         }
6367
6368         /* set_regdom takes ownership of rd */
6369         return set_regdom(rd, REGD_SOURCE_CRDA);
6370  bad_reg:
6371         kfree(rd);
6372         return r;
6373 }
6374 #endif /* CONFIG_CFG80211_CRDA_SUPPORT */
6375
6376 static int validate_scan_freqs(struct nlattr *freqs)
6377 {
6378         struct nlattr *attr1, *attr2;
6379         int n_channels = 0, tmp1, tmp2;
6380
6381         nla_for_each_nested(attr1, freqs, tmp1) {
6382                 n_channels++;
6383                 /*
6384                  * Some hardware has a limited channel list for
6385                  * scanning, and it is pretty much nonsensical
6386                  * to scan for a channel twice, so disallow that
6387                  * and don't require drivers to check that the
6388                  * channel list they get isn't longer than what
6389                  * they can scan, as long as they can scan all
6390                  * the channels they registered at once.
6391                  */
6392                 nla_for_each_nested(attr2, freqs, tmp2)
6393                         if (attr1 != attr2 &&
6394                             nla_get_u32(attr1) == nla_get_u32(attr2))
6395                                 return 0;
6396         }
6397
6398         return n_channels;
6399 }
6400
6401 static bool is_band_valid(struct wiphy *wiphy, enum nl80211_band b)
6402 {
6403         return b < NUM_NL80211_BANDS && wiphy->bands[b];
6404 }
6405
6406 static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy,
6407                             struct cfg80211_bss_selection *bss_select)
6408 {
6409         struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1];
6410         struct nlattr *nest;
6411         int err;
6412         bool found = false;
6413         int i;
6414
6415         /* only process one nested attribute */
6416         nest = nla_data(nla);
6417         if (!nla_ok(nest, nla_len(nest)))
6418                 return -EINVAL;
6419
6420         err = nla_parse_nested(attr, NL80211_BSS_SELECT_ATTR_MAX, nest,
6421                                nl80211_bss_select_policy);
6422         if (err)
6423                 return err;
6424
6425         /* only one attribute may be given */
6426         for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) {
6427                 if (attr[i]) {
6428                         if (found)
6429                                 return -EINVAL;
6430                         found = true;
6431                 }
6432         }
6433
6434         bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID;
6435
6436         if (attr[NL80211_BSS_SELECT_ATTR_RSSI])
6437                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI;
6438
6439         if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) {
6440                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF;
6441                 bss_select->param.band_pref =
6442                         nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]);
6443                 if (!is_band_valid(wiphy, bss_select->param.band_pref))
6444                         return -EINVAL;
6445         }
6446
6447         if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) {
6448                 struct nl80211_bss_select_rssi_adjust *adj_param;
6449
6450                 adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]);
6451                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST;
6452                 bss_select->param.adjust.band = adj_param->band;
6453                 bss_select->param.adjust.delta = adj_param->delta;
6454                 if (!is_band_valid(wiphy, bss_select->param.adjust.band))
6455                         return -EINVAL;
6456         }
6457
6458         /* user-space did not provide behaviour attribute */
6459         if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID)
6460                 return -EINVAL;
6461
6462         if (!(wiphy->bss_select_support & BIT(bss_select->behaviour)))
6463                 return -EINVAL;
6464
6465         return 0;
6466 }
6467
6468 static int nl80211_parse_random_mac(struct nlattr **attrs,
6469                                     u8 *mac_addr, u8 *mac_addr_mask)
6470 {
6471         int i;
6472
6473         if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
6474                 eth_zero_addr(mac_addr);
6475                 eth_zero_addr(mac_addr_mask);
6476                 mac_addr[0] = 0x2;
6477                 mac_addr_mask[0] = 0x3;
6478
6479                 return 0;
6480         }
6481
6482         /* need both or none */
6483         if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
6484                 return -EINVAL;
6485
6486         memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
6487         memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
6488
6489         /* don't allow or configure an mcast address */
6490         if (!is_multicast_ether_addr(mac_addr_mask) ||
6491             is_multicast_ether_addr(mac_addr))
6492                 return -EINVAL;
6493
6494         /*
6495          * allow users to pass a MAC address that has bits set outside
6496          * of the mask, but don't bother drivers with having to deal
6497          * with such bits
6498          */
6499         for (i = 0; i < ETH_ALEN; i++)
6500                 mac_addr[i] &= mac_addr_mask[i];
6501
6502         return 0;
6503 }
6504
6505 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
6506 {
6507         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6508         struct wireless_dev *wdev = info->user_ptr[1];
6509         struct cfg80211_scan_request *request;
6510         struct nlattr *attr;
6511         struct wiphy *wiphy;
6512         int err, tmp, n_ssids = 0, n_channels, i;
6513         size_t ie_len;
6514
6515         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6516                 return -EINVAL;
6517
6518         wiphy = &rdev->wiphy;
6519
6520         if (wdev->iftype == NL80211_IFTYPE_NAN)
6521                 return -EOPNOTSUPP;
6522
6523         if (!rdev->ops->scan)
6524                 return -EOPNOTSUPP;
6525
6526         if (rdev->scan_req || rdev->scan_msg) {
6527                 err = -EBUSY;
6528                 goto unlock;
6529         }
6530
6531         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6532                 n_channels = validate_scan_freqs(
6533                                 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
6534                 if (!n_channels) {
6535                         err = -EINVAL;
6536                         goto unlock;
6537                 }
6538         } else {
6539                 n_channels = ieee80211_get_num_supported_channels(wiphy);
6540         }
6541
6542         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
6543                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
6544                         n_ssids++;
6545
6546         if (n_ssids > wiphy->max_scan_ssids) {
6547                 err = -EINVAL;
6548                 goto unlock;
6549         }
6550
6551         if (info->attrs[NL80211_ATTR_IE])
6552                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6553         else
6554                 ie_len = 0;
6555
6556         if (ie_len > wiphy->max_scan_ie_len) {
6557                 err = -EINVAL;
6558                 goto unlock;
6559         }
6560
6561         request = kzalloc(sizeof(*request)
6562                         + sizeof(*request->ssids) * n_ssids
6563                         + sizeof(*request->channels) * n_channels
6564                         + ie_len, GFP_KERNEL);
6565         if (!request) {
6566                 err = -ENOMEM;
6567                 goto unlock;
6568         }
6569
6570         if (n_ssids)
6571                 request->ssids = (void *)&request->channels[n_channels];
6572         request->n_ssids = n_ssids;
6573         if (ie_len) {
6574                 if (n_ssids)
6575                         request->ie = (void *)(request->ssids + n_ssids);
6576                 else
6577                         request->ie = (void *)(request->channels + n_channels);
6578         }
6579
6580         i = 0;
6581         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6582                 /* user specified, bail out if channel not found */
6583                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
6584                         struct ieee80211_channel *chan;
6585
6586                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
6587
6588                         if (!chan) {
6589                                 err = -EINVAL;
6590                                 goto out_free;
6591                         }
6592
6593                         /* ignore disabled channels */
6594                         if (chan->flags & IEEE80211_CHAN_DISABLED)
6595                                 continue;
6596
6597                         request->channels[i] = chan;
6598                         i++;
6599                 }
6600         } else {
6601                 enum nl80211_band band;
6602
6603                 /* all channels */
6604                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
6605                         int j;
6606
6607                         if (!wiphy->bands[band])
6608                                 continue;
6609                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
6610                                 struct ieee80211_channel *chan;
6611
6612                                 chan = &wiphy->bands[band]->channels[j];
6613
6614                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
6615                                         continue;
6616
6617                                 request->channels[i] = chan;
6618                                 i++;
6619                         }
6620                 }
6621         }
6622
6623         if (!i) {
6624                 err = -EINVAL;
6625                 goto out_free;
6626         }
6627
6628         request->n_channels = i;
6629
6630         i = 0;
6631         if (n_ssids) {
6632                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
6633                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
6634                                 err = -EINVAL;
6635                                 goto out_free;
6636                         }
6637                         request->ssids[i].ssid_len = nla_len(attr);
6638                         memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
6639                         i++;
6640                 }
6641         }
6642
6643         if (info->attrs[NL80211_ATTR_IE]) {
6644                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6645                 memcpy((void *)request->ie,
6646                        nla_data(info->attrs[NL80211_ATTR_IE]),
6647                        request->ie_len);
6648         }
6649
6650         for (i = 0; i < NUM_NL80211_BANDS; i++)
6651                 if (wiphy->bands[i])
6652                         request->rates[i] =
6653                                 (1 << wiphy->bands[i]->n_bitrates) - 1;
6654
6655         if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
6656                 nla_for_each_nested(attr,
6657                                     info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
6658                                     tmp) {
6659                         enum nl80211_band band = nla_type(attr);
6660
6661                         if (band < 0 || band >= NUM_NL80211_BANDS) {
6662                                 err = -EINVAL;
6663                                 goto out_free;
6664                         }
6665
6666                         if (!wiphy->bands[band])
6667                                 continue;
6668
6669                         err = ieee80211_get_ratemask(wiphy->bands[band],
6670                                                      nla_data(attr),
6671                                                      nla_len(attr),
6672                                                      &request->rates[band]);
6673                         if (err)
6674                                 goto out_free;
6675                 }
6676         }
6677
6678         if (info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]) {
6679                 if (!wiphy_ext_feature_isset(wiphy,
6680                                         NL80211_EXT_FEATURE_SET_SCAN_DWELL)) {
6681                         err = -EOPNOTSUPP;
6682                         goto out_free;
6683                 }
6684
6685                 request->duration =
6686                         nla_get_u16(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]);
6687                 request->duration_mandatory =
6688                         nla_get_flag(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY]);
6689         }
6690
6691         if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
6692                 request->flags = nla_get_u32(
6693                         info->attrs[NL80211_ATTR_SCAN_FLAGS]);
6694                 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
6695                     !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
6696                         err = -EOPNOTSUPP;
6697                         goto out_free;
6698                 }
6699
6700                 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
6701                         if (!(wiphy->features &
6702                                         NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR)) {
6703                                 err = -EOPNOTSUPP;
6704                                 goto out_free;
6705                         }
6706
6707                         if (wdev->current_bss) {
6708                                 err = -EOPNOTSUPP;
6709                                 goto out_free;
6710                         }
6711
6712                         err = nl80211_parse_random_mac(info->attrs,
6713                                                        request->mac_addr,
6714                                                        request->mac_addr_mask);
6715                         if (err)
6716                                 goto out_free;
6717                 }
6718         }
6719
6720         request->no_cck =
6721                 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
6722
6723         /* Initial implementation used NL80211_ATTR_MAC to set the specific
6724          * BSSID to scan for. This was problematic because that same attribute
6725          * was already used for another purpose (local random MAC address). The
6726          * NL80211_ATTR_BSSID attribute was added to fix this. For backwards
6727          * compatibility with older userspace components, also use the
6728          * NL80211_ATTR_MAC value here if it can be determined to be used for
6729          * the specific BSSID use case instead of the random MAC address
6730          * (NL80211_ATTR_SCAN_FLAGS is used to enable random MAC address use).
6731          */
6732         if (info->attrs[NL80211_ATTR_BSSID])
6733                 memcpy(request->bssid,
6734                        nla_data(info->attrs[NL80211_ATTR_BSSID]), ETH_ALEN);
6735         else if (!(request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) &&
6736                  info->attrs[NL80211_ATTR_MAC])
6737                 memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]),
6738                        ETH_ALEN);
6739         else
6740                 eth_broadcast_addr(request->bssid);
6741
6742         request->wdev = wdev;
6743         request->wiphy = &rdev->wiphy;
6744         request->scan_start = jiffies;
6745
6746         rdev->scan_req = request;
6747         err = rdev_scan(rdev, request);
6748
6749         if (!err) {
6750                 nl80211_send_scan_start(rdev, wdev);
6751                 if (wdev->netdev)
6752                         dev_hold(wdev->netdev);
6753         } else {
6754  out_free:
6755                 rdev->scan_req = NULL;
6756                 kfree(request);
6757         }
6758
6759  unlock:
6760         return err;
6761 }
6762
6763 static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info)
6764 {
6765         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6766         struct wireless_dev *wdev = info->user_ptr[1];
6767
6768         if (!rdev->ops->abort_scan)
6769                 return -EOPNOTSUPP;
6770
6771         if (rdev->scan_msg)
6772                 return 0;
6773
6774         if (!rdev->scan_req)
6775                 return -ENOENT;
6776
6777         rdev_abort_scan(rdev, wdev);
6778         return 0;
6779 }
6780
6781 static int
6782 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans,
6783                                struct cfg80211_sched_scan_request *request,
6784                                struct nlattr **attrs)
6785 {
6786         int tmp, err, i = 0;
6787         struct nlattr *attr;
6788
6789         if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
6790                 u32 interval;
6791
6792                 /*
6793                  * If scan plans are not specified,
6794                  * %NL80211_ATTR_SCHED_SCAN_INTERVAL must be specified. In this
6795                  * case one scan plan will be set with the specified scan
6796                  * interval and infinite number of iterations.
6797                  */
6798                 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
6799                         return -EINVAL;
6800
6801                 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
6802                 if (!interval)
6803                         return -EINVAL;
6804
6805                 request->scan_plans[0].interval =
6806                         DIV_ROUND_UP(interval, MSEC_PER_SEC);
6807                 if (!request->scan_plans[0].interval)
6808                         return -EINVAL;
6809
6810                 if (request->scan_plans[0].interval >
6811                     wiphy->max_sched_scan_plan_interval)
6812                         request->scan_plans[0].interval =
6813                                 wiphy->max_sched_scan_plan_interval;
6814
6815                 return 0;
6816         }
6817
6818         nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) {
6819                 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1];
6820
6821                 if (WARN_ON(i >= n_plans))
6822                         return -EINVAL;
6823
6824                 err = nla_parse_nested(plan, NL80211_SCHED_SCAN_PLAN_MAX,
6825                                        attr, nl80211_plan_policy);
6826                 if (err)
6827                         return err;
6828
6829                 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL])
6830                         return -EINVAL;
6831
6832                 request->scan_plans[i].interval =
6833                         nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]);
6834                 if (!request->scan_plans[i].interval ||
6835                     request->scan_plans[i].interval >
6836                     wiphy->max_sched_scan_plan_interval)
6837                         return -EINVAL;
6838
6839                 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) {
6840                         request->scan_plans[i].iterations =
6841                                 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]);
6842                         if (!request->scan_plans[i].iterations ||
6843                             (request->scan_plans[i].iterations >
6844                              wiphy->max_sched_scan_plan_iterations))
6845                                 return -EINVAL;
6846                 } else if (i < n_plans - 1) {
6847                         /*
6848                          * All scan plans but the last one must specify
6849                          * a finite number of iterations
6850                          */
6851                         return -EINVAL;
6852                 }
6853
6854                 i++;
6855         }
6856
6857         /*
6858          * The last scan plan must not specify the number of
6859          * iterations, it is supposed to run infinitely
6860          */
6861         if (request->scan_plans[n_plans - 1].iterations)
6862                 return  -EINVAL;
6863
6864         return 0;
6865 }
6866
6867 static struct cfg80211_sched_scan_request *
6868 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
6869                          struct nlattr **attrs)
6870 {
6871         struct cfg80211_sched_scan_request *request;
6872         struct nlattr *attr;
6873         int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0;
6874         enum nl80211_band band;
6875         size_t ie_len;
6876         struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
6877         s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
6878
6879         if (!is_valid_ie_attr(attrs[NL80211_ATTR_IE]))
6880                 return ERR_PTR(-EINVAL);
6881
6882         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6883                 n_channels = validate_scan_freqs(
6884                                 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
6885                 if (!n_channels)
6886                         return ERR_PTR(-EINVAL);
6887         } else {
6888                 n_channels = ieee80211_get_num_supported_channels(wiphy);
6889         }
6890
6891         if (attrs[NL80211_ATTR_SCAN_SSIDS])
6892                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
6893                                     tmp)
6894                         n_ssids++;
6895
6896         if (n_ssids > wiphy->max_sched_scan_ssids)
6897                 return ERR_PTR(-EINVAL);
6898
6899         /*
6900          * First, count the number of 'real' matchsets. Due to an issue with
6901          * the old implementation, matchsets containing only the RSSI attribute
6902          * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
6903          * RSSI for all matchsets, rather than their own matchset for reporting
6904          * all APs with a strong RSSI. This is needed to be compatible with
6905          * older userspace that treated a matchset with only the RSSI as the
6906          * global RSSI for all other matchsets - if there are other matchsets.
6907          */
6908         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
6909                 nla_for_each_nested(attr,
6910                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
6911                                     tmp) {
6912                         struct nlattr *rssi;
6913
6914                         err = nla_parse_nested(tb,
6915                                                NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
6916                                                attr, nl80211_match_policy);
6917                         if (err)
6918                                 return ERR_PTR(err);
6919                         /* add other standalone attributes here */
6920                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID]) {
6921                                 n_match_sets++;
6922                                 continue;
6923                         }
6924                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
6925                         if (rssi)
6926                                 default_match_rssi = nla_get_s32(rssi);
6927                 }
6928         }
6929
6930         /* However, if there's no other matchset, add the RSSI one */
6931         if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
6932                 n_match_sets = 1;
6933
6934         if (n_match_sets > wiphy->max_match_sets)
6935                 return ERR_PTR(-EINVAL);
6936
6937         if (attrs[NL80211_ATTR_IE])
6938                 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
6939         else
6940                 ie_len = 0;
6941
6942         if (ie_len > wiphy->max_sched_scan_ie_len)
6943                 return ERR_PTR(-EINVAL);
6944
6945         if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
6946                 /*
6947                  * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since
6948                  * each scan plan already specifies its own interval
6949                  */
6950                 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
6951                         return ERR_PTR(-EINVAL);
6952
6953                 nla_for_each_nested(attr,
6954                                     attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp)
6955                         n_plans++;
6956         } else {
6957                 /*
6958                  * The scan interval attribute is kept for backward
6959                  * compatibility. If no scan plans are specified and sched scan
6960                  * interval is specified, one scan plan will be set with this
6961                  * scan interval and infinite number of iterations.
6962                  */
6963                 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
6964                         return ERR_PTR(-EINVAL);
6965
6966                 n_plans = 1;
6967         }
6968
6969         if (!n_plans || n_plans > wiphy->max_sched_scan_plans)
6970                 return ERR_PTR(-EINVAL);
6971
6972         request = kzalloc(sizeof(*request)
6973                         + sizeof(*request->ssids) * n_ssids
6974                         + sizeof(*request->match_sets) * n_match_sets
6975                         + sizeof(*request->scan_plans) * n_plans
6976                         + sizeof(*request->channels) * n_channels
6977                         + ie_len, GFP_KERNEL);
6978         if (!request)
6979                 return ERR_PTR(-ENOMEM);
6980
6981         if (n_ssids)
6982                 request->ssids = (void *)&request->channels[n_channels];
6983         request->n_ssids = n_ssids;
6984         if (ie_len) {
6985                 if (n_ssids)
6986                         request->ie = (void *)(request->ssids + n_ssids);
6987                 else
6988                         request->ie = (void *)(request->channels + n_channels);
6989         }
6990
6991         if (n_match_sets) {
6992                 if (request->ie)
6993                         request->match_sets = (void *)(request->ie + ie_len);
6994                 else if (n_ssids)
6995                         request->match_sets =
6996                                 (void *)(request->ssids + n_ssids);
6997                 else
6998                         request->match_sets =
6999                                 (void *)(request->channels + n_channels);
7000         }
7001         request->n_match_sets = n_match_sets;
7002
7003         if (n_match_sets)
7004                 request->scan_plans = (void *)(request->match_sets +
7005                                                n_match_sets);
7006         else if (request->ie)
7007                 request->scan_plans = (void *)(request->ie + ie_len);
7008         else if (n_ssids)
7009                 request->scan_plans = (void *)(request->ssids + n_ssids);
7010         else
7011                 request->scan_plans = (void *)(request->channels + n_channels);
7012
7013         request->n_scan_plans = n_plans;
7014
7015         i = 0;
7016         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7017                 /* user specified, bail out if channel not found */
7018                 nla_for_each_nested(attr,
7019                                     attrs[NL80211_ATTR_SCAN_FREQUENCIES],
7020                                     tmp) {
7021                         struct ieee80211_channel *chan;
7022
7023                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
7024
7025                         if (!chan) {
7026                                 err = -EINVAL;
7027                                 goto out_free;
7028                         }
7029
7030                         /* ignore disabled channels */
7031                         if (chan->flags & IEEE80211_CHAN_DISABLED)
7032                                 continue;
7033
7034                         request->channels[i] = chan;
7035                         i++;
7036                 }
7037         } else {
7038                 /* all channels */
7039                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
7040                         int j;
7041
7042                         if (!wiphy->bands[band])
7043                                 continue;
7044                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
7045                                 struct ieee80211_channel *chan;
7046
7047                                 chan = &wiphy->bands[band]->channels[j];
7048
7049                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
7050                                         continue;
7051
7052                                 request->channels[i] = chan;
7053                                 i++;
7054                         }
7055                 }
7056         }
7057
7058         if (!i) {
7059                 err = -EINVAL;
7060                 goto out_free;
7061         }
7062
7063         request->n_channels = i;
7064
7065         i = 0;
7066         if (n_ssids) {
7067                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
7068                                     tmp) {
7069                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
7070                                 err = -EINVAL;
7071                                 goto out_free;
7072                         }
7073                         request->ssids[i].ssid_len = nla_len(attr);
7074                         memcpy(request->ssids[i].ssid, nla_data(attr),
7075                                nla_len(attr));
7076                         i++;
7077                 }
7078         }
7079
7080         i = 0;
7081         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
7082                 nla_for_each_nested(attr,
7083                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
7084                                     tmp) {
7085                         struct nlattr *ssid, *rssi;
7086
7087                         err = nla_parse_nested(tb,
7088                                                NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
7089                                                attr, nl80211_match_policy);
7090                         if (err)
7091                                 goto out_free;
7092                         ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
7093                         if (ssid) {
7094                                 if (WARN_ON(i >= n_match_sets)) {
7095                                         /* this indicates a programming error,
7096                                          * the loop above should have verified
7097                                          * things properly
7098                                          */
7099                                         err = -EINVAL;
7100                                         goto out_free;
7101                                 }
7102
7103                                 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
7104                                         err = -EINVAL;
7105                                         goto out_free;
7106                                 }
7107                                 memcpy(request->match_sets[i].ssid.ssid,
7108                                        nla_data(ssid), nla_len(ssid));
7109                                 request->match_sets[i].ssid.ssid_len =
7110                                         nla_len(ssid);
7111                                 /* special attribute - old implementation w/a */
7112                                 request->match_sets[i].rssi_thold =
7113                                         default_match_rssi;
7114                                 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
7115                                 if (rssi)
7116                                         request->match_sets[i].rssi_thold =
7117                                                 nla_get_s32(rssi);
7118                         }
7119                         i++;
7120                 }
7121
7122                 /* there was no other matchset, so the RSSI one is alone */
7123                 if (i == 0 && n_match_sets)
7124                         request->match_sets[0].rssi_thold = default_match_rssi;
7125
7126                 request->min_rssi_thold = INT_MAX;
7127                 for (i = 0; i < n_match_sets; i++)
7128                         request->min_rssi_thold =
7129                                 min(request->match_sets[i].rssi_thold,
7130                                     request->min_rssi_thold);
7131         } else {
7132                 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
7133         }
7134
7135         if (ie_len) {
7136                 request->ie_len = ie_len;
7137                 memcpy((void *)request->ie,
7138                        nla_data(attrs[NL80211_ATTR_IE]),
7139                        request->ie_len);
7140         }
7141
7142         if (attrs[NL80211_ATTR_SCAN_FLAGS]) {
7143                 request->flags = nla_get_u32(
7144                         attrs[NL80211_ATTR_SCAN_FLAGS]);
7145                 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
7146                     !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
7147                         err = -EOPNOTSUPP;
7148                         goto out_free;
7149                 }
7150
7151                 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
7152                         u32 flg = NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR;
7153
7154                         if (!wdev) /* must be net-detect */
7155                                 flg = NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
7156
7157                         if (!(wiphy->features & flg)) {
7158                                 err = -EOPNOTSUPP;
7159                                 goto out_free;
7160                         }
7161
7162                         if (wdev && wdev->current_bss) {
7163                                 err = -EOPNOTSUPP;
7164                                 goto out_free;
7165                         }
7166
7167                         err = nl80211_parse_random_mac(attrs, request->mac_addr,
7168                                                        request->mac_addr_mask);
7169                         if (err)
7170                                 goto out_free;
7171                 }
7172         }
7173
7174         if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
7175                 request->delay =
7176                         nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
7177
7178         err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs);
7179         if (err)
7180                 goto out_free;
7181
7182         request->scan_start = jiffies;
7183
7184         return request;
7185
7186 out_free:
7187         kfree(request);
7188         return ERR_PTR(err);
7189 }
7190
7191 static int nl80211_start_sched_scan(struct sk_buff *skb,
7192                                     struct genl_info *info)
7193 {
7194         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7195         struct net_device *dev = info->user_ptr[1];
7196         struct wireless_dev *wdev = dev->ieee80211_ptr;
7197         struct cfg80211_sched_scan_request *sched_scan_req;
7198         int err;
7199
7200         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
7201             !rdev->ops->sched_scan_start)
7202                 return -EOPNOTSUPP;
7203
7204         if (rdev->sched_scan_req)
7205                 return -EINPROGRESS;
7206
7207         sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
7208                                                   info->attrs);
7209
7210         err = PTR_ERR_OR_ZERO(sched_scan_req);
7211         if (err)
7212                 goto out_err;
7213
7214         err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
7215         if (err)
7216                 goto out_free;
7217
7218         sched_scan_req->dev = dev;
7219         sched_scan_req->wiphy = &rdev->wiphy;
7220
7221         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
7222                 sched_scan_req->owner_nlportid = info->snd_portid;
7223
7224         rcu_assign_pointer(rdev->sched_scan_req, sched_scan_req);
7225
7226         nl80211_send_sched_scan(rdev, dev,
7227                                 NL80211_CMD_START_SCHED_SCAN);
7228         return 0;
7229
7230 out_free:
7231         kfree(sched_scan_req);
7232 out_err:
7233         return err;
7234 }
7235
7236 static int nl80211_stop_sched_scan(struct sk_buff *skb,
7237                                    struct genl_info *info)
7238 {
7239         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7240
7241         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
7242             !rdev->ops->sched_scan_stop)
7243                 return -EOPNOTSUPP;
7244
7245         return __cfg80211_stop_sched_scan(rdev, false);
7246 }
7247
7248 static int nl80211_start_radar_detection(struct sk_buff *skb,
7249                                          struct genl_info *info)
7250 {
7251         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7252         struct net_device *dev = info->user_ptr[1];
7253         struct wireless_dev *wdev = dev->ieee80211_ptr;
7254         struct cfg80211_chan_def chandef;
7255         enum nl80211_dfs_regions dfs_region;
7256         unsigned int cac_time_ms;
7257         int err;
7258
7259         dfs_region = reg_get_dfs_region(wdev->wiphy);
7260         if (dfs_region == NL80211_DFS_UNSET)
7261                 return -EINVAL;
7262
7263         err = nl80211_parse_chandef(rdev, info, &chandef);
7264         if (err)
7265                 return err;
7266
7267         if (netif_carrier_ok(dev))
7268                 return -EBUSY;
7269
7270         if (wdev->cac_started)
7271                 return -EBUSY;
7272
7273         err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef,
7274                                             wdev->iftype);
7275         if (err < 0)
7276                 return err;
7277
7278         if (err == 0)
7279                 return -EINVAL;
7280
7281         if (!cfg80211_chandef_dfs_usable(wdev->wiphy, &chandef))
7282                 return -EINVAL;
7283
7284         if (!rdev->ops->start_radar_detection)
7285                 return -EOPNOTSUPP;
7286
7287         cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
7288         if (WARN_ON(!cac_time_ms))
7289                 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
7290
7291         err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms);
7292         if (!err) {
7293                 wdev->chandef = chandef;
7294                 wdev->cac_started = true;
7295                 wdev->cac_start_time = jiffies;
7296                 wdev->cac_time_ms = cac_time_ms;
7297         }
7298         return err;
7299 }
7300
7301 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
7302 {
7303         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7304         struct net_device *dev = info->user_ptr[1];
7305         struct wireless_dev *wdev = dev->ieee80211_ptr;
7306         struct cfg80211_csa_settings params;
7307         /* csa_attrs is defined static to avoid waste of stack size - this
7308          * function is called under RTNL lock, so this should not be a problem.
7309          */
7310         static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
7311         int err;
7312         bool need_new_beacon = false;
7313         int len, i;
7314         u32 cs_count;
7315
7316         if (!rdev->ops->channel_switch ||
7317             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
7318                 return -EOPNOTSUPP;
7319
7320         switch (dev->ieee80211_ptr->iftype) {
7321         case NL80211_IFTYPE_AP:
7322         case NL80211_IFTYPE_P2P_GO:
7323                 need_new_beacon = true;
7324
7325                 /* useless if AP is not running */
7326                 if (!wdev->beacon_interval)
7327                         return -ENOTCONN;
7328                 break;
7329         case NL80211_IFTYPE_ADHOC:
7330                 if (!wdev->ssid_len)
7331                         return -ENOTCONN;
7332                 break;
7333         case NL80211_IFTYPE_MESH_POINT:
7334                 if (!wdev->mesh_id_len)
7335                         return -ENOTCONN;
7336                 break;
7337         default:
7338                 return -EOPNOTSUPP;
7339         }
7340
7341         memset(&params, 0, sizeof(params));
7342
7343         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
7344             !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
7345                 return -EINVAL;
7346
7347         /* only important for AP, IBSS and mesh create IEs internally */
7348         if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
7349                 return -EINVAL;
7350
7351         /* Even though the attribute is u32, the specification says
7352          * u8, so let's make sure we don't overflow.
7353          */
7354         cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
7355         if (cs_count > 255)
7356                 return -EINVAL;
7357
7358         params.count = cs_count;
7359
7360         if (!need_new_beacon)
7361                 goto skip_beacons;
7362
7363         err = nl80211_parse_beacon(info->attrs, &params.beacon_after);
7364         if (err)
7365                 return err;
7366
7367         err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX,
7368                                info->attrs[NL80211_ATTR_CSA_IES],
7369                                nl80211_policy);
7370         if (err)
7371                 return err;
7372
7373         err = nl80211_parse_beacon(csa_attrs, &params.beacon_csa);
7374         if (err)
7375                 return err;
7376
7377         if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
7378                 return -EINVAL;
7379
7380         len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
7381         if (!len || (len % sizeof(u16)))
7382                 return -EINVAL;
7383
7384         params.n_counter_offsets_beacon = len / sizeof(u16);
7385         if (rdev->wiphy.max_num_csa_counters &&
7386             (params.n_counter_offsets_beacon >
7387              rdev->wiphy.max_num_csa_counters))
7388                 return -EINVAL;
7389
7390         params.counter_offsets_beacon =
7391                 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
7392
7393         /* sanity checks - counters should fit and be the same */
7394         for (i = 0; i < params.n_counter_offsets_beacon; i++) {
7395                 u16 offset = params.counter_offsets_beacon[i];
7396
7397                 if (offset >= params.beacon_csa.tail_len)
7398                         return -EINVAL;
7399
7400                 if (params.beacon_csa.tail[offset] != params.count)
7401                         return -EINVAL;
7402         }
7403
7404         if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
7405                 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
7406                 if (!len || (len % sizeof(u16)))
7407                         return -EINVAL;
7408
7409                 params.n_counter_offsets_presp = len / sizeof(u16);
7410                 if (rdev->wiphy.max_num_csa_counters &&
7411                     (params.n_counter_offsets_presp >
7412                      rdev->wiphy.max_num_csa_counters))
7413                         return -EINVAL;
7414
7415                 params.counter_offsets_presp =
7416                         nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
7417
7418                 /* sanity checks - counters should fit and be the same */
7419                 for (i = 0; i < params.n_counter_offsets_presp; i++) {
7420                         u16 offset = params.counter_offsets_presp[i];
7421
7422                         if (offset >= params.beacon_csa.probe_resp_len)
7423                                 return -EINVAL;
7424
7425                         if (params.beacon_csa.probe_resp[offset] !=
7426                             params.count)
7427                                 return -EINVAL;
7428                 }
7429         }
7430
7431 skip_beacons:
7432         err = nl80211_parse_chandef(rdev, info, &params.chandef);
7433         if (err)
7434                 return err;
7435
7436         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
7437                                            wdev->iftype))
7438                 return -EINVAL;
7439
7440         err = cfg80211_chandef_dfs_required(wdev->wiphy,
7441                                             &params.chandef,
7442                                             wdev->iftype);
7443         if (err < 0)
7444                 return err;
7445
7446         if (err > 0)
7447                 params.radar_required = true;
7448
7449         if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
7450                 params.block_tx = true;
7451
7452         wdev_lock(wdev);
7453         err = rdev_channel_switch(rdev, dev, &params);
7454         wdev_unlock(wdev);
7455
7456         return err;
7457 }
7458
7459 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
7460                             u32 seq, int flags,
7461                             struct cfg80211_registered_device *rdev,
7462                             struct wireless_dev *wdev,
7463                             struct cfg80211_internal_bss *intbss)
7464 {
7465         struct cfg80211_bss *res = &intbss->pub;
7466         const struct cfg80211_bss_ies *ies;
7467         void *hdr;
7468         struct nlattr *bss;
7469
7470         ASSERT_WDEV_LOCK(wdev);
7471
7472         hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
7473                              NL80211_CMD_NEW_SCAN_RESULTS);
7474         if (!hdr)
7475                 return -1;
7476
7477         genl_dump_check_consistent(cb, hdr, &nl80211_fam);
7478
7479         if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
7480                 goto nla_put_failure;
7481         if (wdev->netdev &&
7482             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
7483                 goto nla_put_failure;
7484         if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
7485                               NL80211_ATTR_PAD))
7486                 goto nla_put_failure;
7487
7488         bss = nla_nest_start(msg, NL80211_ATTR_BSS);
7489         if (!bss)
7490                 goto nla_put_failure;
7491         if ((!is_zero_ether_addr(res->bssid) &&
7492              nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
7493                 goto nla_put_failure;
7494
7495         rcu_read_lock();
7496         /* indicate whether we have probe response data or not */
7497         if (rcu_access_pointer(res->proberesp_ies) &&
7498             nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
7499                 goto fail_unlock_rcu;
7500
7501         /* this pointer prefers to be pointed to probe response data
7502          * but is always valid
7503          */
7504         ies = rcu_dereference(res->ies);
7505         if (ies) {
7506                 if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf,
7507                                       NL80211_BSS_PAD))
7508                         goto fail_unlock_rcu;
7509                 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
7510                                         ies->len, ies->data))
7511                         goto fail_unlock_rcu;
7512         }
7513
7514         /* and this pointer is always (unless driver didn't know) beacon data */
7515         ies = rcu_dereference(res->beacon_ies);
7516         if (ies && ies->from_beacon) {
7517                 if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf,
7518                                       NL80211_BSS_PAD))
7519                         goto fail_unlock_rcu;
7520                 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
7521                                         ies->len, ies->data))
7522                         goto fail_unlock_rcu;
7523         }
7524         rcu_read_unlock();
7525
7526         if (res->beacon_interval &&
7527             nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
7528                 goto nla_put_failure;
7529         if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
7530             nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
7531             nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
7532             nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
7533                         jiffies_to_msecs(jiffies - intbss->ts)))
7534                 goto nla_put_failure;
7535
7536         if (intbss->parent_tsf &&
7537             (nla_put_u64_64bit(msg, NL80211_BSS_PARENT_TSF,
7538                                intbss->parent_tsf, NL80211_BSS_PAD) ||
7539              nla_put(msg, NL80211_BSS_PARENT_BSSID, ETH_ALEN,
7540                      intbss->parent_bssid)))
7541                 goto nla_put_failure;
7542
7543         if (intbss->ts_boottime &&
7544             nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME,
7545                               intbss->ts_boottime, NL80211_BSS_PAD))
7546                 goto nla_put_failure;
7547
7548         switch (rdev->wiphy.signal_type) {
7549         case CFG80211_SIGNAL_TYPE_MBM:
7550                 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
7551                         goto nla_put_failure;
7552                 break;
7553         case CFG80211_SIGNAL_TYPE_UNSPEC:
7554                 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
7555                         goto nla_put_failure;
7556                 break;
7557         default:
7558                 break;
7559         }
7560
7561         switch (wdev->iftype) {
7562         case NL80211_IFTYPE_P2P_CLIENT:
7563         case NL80211_IFTYPE_STATION:
7564                 if (intbss == wdev->current_bss &&
7565                     nla_put_u32(msg, NL80211_BSS_STATUS,
7566                                 NL80211_BSS_STATUS_ASSOCIATED))
7567                         goto nla_put_failure;
7568                 break;
7569         case NL80211_IFTYPE_ADHOC:
7570                 if (intbss == wdev->current_bss &&
7571                     nla_put_u32(msg, NL80211_BSS_STATUS,
7572                                 NL80211_BSS_STATUS_IBSS_JOINED))
7573                         goto nla_put_failure;
7574                 break;
7575         default:
7576                 break;
7577         }
7578
7579         nla_nest_end(msg, bss);
7580
7581         genlmsg_end(msg, hdr);
7582         return 0;
7583
7584  fail_unlock_rcu:
7585         rcu_read_unlock();
7586  nla_put_failure:
7587         genlmsg_cancel(msg, hdr);
7588         return -EMSGSIZE;
7589 }
7590
7591 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
7592 {
7593         struct cfg80211_registered_device *rdev;
7594         struct cfg80211_internal_bss *scan;
7595         struct wireless_dev *wdev;
7596         int start = cb->args[2], idx = 0;
7597         int err;
7598
7599         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
7600         if (err)
7601                 return err;
7602
7603         wdev_lock(wdev);
7604         spin_lock_bh(&rdev->bss_lock);
7605         cfg80211_bss_expire(rdev);
7606
7607         cb->seq = rdev->bss_generation;
7608
7609         list_for_each_entry(scan, &rdev->bss_list, list) {
7610                 if (++idx <= start)
7611                         continue;
7612                 if (nl80211_send_bss(skb, cb,
7613                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
7614                                 rdev, wdev, scan) < 0) {
7615                         idx--;
7616                         break;
7617                 }
7618         }
7619
7620         spin_unlock_bh(&rdev->bss_lock);
7621         wdev_unlock(wdev);
7622
7623         cb->args[2] = idx;
7624         nl80211_finish_wdev_dump(rdev);
7625
7626         return skb->len;
7627 }
7628
7629 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
7630                                int flags, struct net_device *dev,
7631                                bool allow_radio_stats,
7632                                struct survey_info *survey)
7633 {
7634         void *hdr;
7635         struct nlattr *infoattr;
7636
7637         /* skip radio stats if userspace didn't request them */
7638         if (!survey->channel && !allow_radio_stats)
7639                 return 0;
7640
7641         hdr = nl80211hdr_put(msg, portid, seq, flags,
7642                              NL80211_CMD_NEW_SURVEY_RESULTS);
7643         if (!hdr)
7644                 return -ENOMEM;
7645
7646         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
7647                 goto nla_put_failure;
7648
7649         infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
7650         if (!infoattr)
7651                 goto nla_put_failure;
7652
7653         if (survey->channel &&
7654             nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
7655                         survey->channel->center_freq))
7656                 goto nla_put_failure;
7657
7658         if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
7659             nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
7660                 goto nla_put_failure;
7661         if ((survey->filled & SURVEY_INFO_IN_USE) &&
7662             nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
7663                 goto nla_put_failure;
7664         if ((survey->filled & SURVEY_INFO_TIME) &&
7665             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME,
7666                         survey->time, NL80211_SURVEY_INFO_PAD))
7667                 goto nla_put_failure;
7668         if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
7669             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY,
7670                               survey->time_busy, NL80211_SURVEY_INFO_PAD))
7671                 goto nla_put_failure;
7672         if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
7673             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
7674                               survey->time_ext_busy, NL80211_SURVEY_INFO_PAD))
7675                 goto nla_put_failure;
7676         if ((survey->filled & SURVEY_INFO_TIME_RX) &&
7677             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX,
7678                               survey->time_rx, NL80211_SURVEY_INFO_PAD))
7679                 goto nla_put_failure;
7680         if ((survey->filled & SURVEY_INFO_TIME_TX) &&
7681             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX,
7682                               survey->time_tx, NL80211_SURVEY_INFO_PAD))
7683                 goto nla_put_failure;
7684         if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
7685             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN,
7686                               survey->time_scan, NL80211_SURVEY_INFO_PAD))
7687                 goto nla_put_failure;
7688
7689         nla_nest_end(msg, infoattr);
7690
7691         genlmsg_end(msg, hdr);
7692         return 0;
7693
7694  nla_put_failure:
7695         genlmsg_cancel(msg, hdr);
7696         return -EMSGSIZE;
7697 }
7698
7699 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
7700 {
7701         struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
7702         struct survey_info survey;
7703         struct cfg80211_registered_device *rdev;
7704         struct wireless_dev *wdev;
7705         int survey_idx = cb->args[2];
7706         int res;
7707         bool radio_stats;
7708
7709         res = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
7710         if (res)
7711                 return res;
7712
7713         /* prepare_wdev_dump parsed the attributes */
7714         radio_stats = attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
7715
7716         if (!wdev->netdev) {
7717                 res = -EINVAL;
7718                 goto out_err;
7719         }
7720
7721         if (!rdev->ops->dump_survey) {
7722                 res = -EOPNOTSUPP;
7723                 goto out_err;
7724         }
7725
7726         while (1) {
7727                 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
7728                 if (res == -ENOENT)
7729                         break;
7730                 if (res)
7731                         goto out_err;
7732
7733                 /* don't send disabled channels, but do send non-channel data */
7734                 if (survey.channel &&
7735                     survey.channel->flags & IEEE80211_CHAN_DISABLED) {
7736                         survey_idx++;
7737                         continue;
7738                 }
7739
7740                 if (nl80211_send_survey(skb,
7741                                 NETLINK_CB(cb->skb).portid,
7742                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
7743                                 wdev->netdev, radio_stats, &survey) < 0)
7744                         goto out;
7745                 survey_idx++;
7746         }
7747
7748  out:
7749         cb->args[2] = survey_idx;
7750         res = skb->len;
7751  out_err:
7752         nl80211_finish_wdev_dump(rdev);
7753         return res;
7754 }
7755
7756 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
7757 {
7758         return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
7759                                   NL80211_WPA_VERSION_2));
7760 }
7761
7762 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
7763 {
7764         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7765         struct net_device *dev = info->user_ptr[1];
7766         struct ieee80211_channel *chan;
7767         const u8 *bssid, *ssid, *ie = NULL, *auth_data = NULL;
7768         int err, ssid_len, ie_len = 0, auth_data_len = 0;
7769         enum nl80211_auth_type auth_type;
7770         struct key_parse key;
7771         bool local_state_change;
7772
7773         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7774                 return -EINVAL;
7775
7776         if (!info->attrs[NL80211_ATTR_MAC])
7777                 return -EINVAL;
7778
7779         if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
7780                 return -EINVAL;
7781
7782         if (!info->attrs[NL80211_ATTR_SSID])
7783                 return -EINVAL;
7784
7785         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
7786                 return -EINVAL;
7787
7788         err = nl80211_parse_key(info, &key);
7789         if (err)
7790                 return err;
7791
7792         if (key.idx >= 0) {
7793                 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
7794                         return -EINVAL;
7795                 if (!key.p.key || !key.p.key_len)
7796                         return -EINVAL;
7797                 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
7798                      key.p.key_len != WLAN_KEY_LEN_WEP40) &&
7799                     (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
7800                      key.p.key_len != WLAN_KEY_LEN_WEP104))
7801                         return -EINVAL;
7802                 if (key.idx > 3)
7803                         return -EINVAL;
7804         } else {
7805                 key.p.key_len = 0;
7806                 key.p.key = NULL;
7807         }
7808
7809         if (key.idx >= 0) {
7810                 int i;
7811                 bool ok = false;
7812
7813                 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
7814                         if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
7815                                 ok = true;
7816                                 break;
7817                         }
7818                 }
7819                 if (!ok)
7820                         return -EINVAL;
7821         }
7822
7823         if (!rdev->ops->auth)
7824                 return -EOPNOTSUPP;
7825
7826         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7827             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7828                 return -EOPNOTSUPP;
7829
7830         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7831         chan = nl80211_get_valid_chan(&rdev->wiphy,
7832                                       info->attrs[NL80211_ATTR_WIPHY_FREQ]);
7833         if (!chan)
7834                 return -EINVAL;
7835
7836         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7837         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7838
7839         if (info->attrs[NL80211_ATTR_IE]) {
7840                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7841                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7842         }
7843
7844         auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
7845         if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
7846                 return -EINVAL;
7847
7848         if ((auth_type == NL80211_AUTHTYPE_SAE ||
7849              auth_type == NL80211_AUTHTYPE_FILS_SK ||
7850              auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
7851              auth_type == NL80211_AUTHTYPE_FILS_PK) &&
7852             !info->attrs[NL80211_ATTR_AUTH_DATA])
7853                 return -EINVAL;
7854
7855         if (info->attrs[NL80211_ATTR_AUTH_DATA]) {
7856                 if (auth_type != NL80211_AUTHTYPE_SAE &&
7857                     auth_type != NL80211_AUTHTYPE_FILS_SK &&
7858                     auth_type != NL80211_AUTHTYPE_FILS_SK_PFS &&
7859                     auth_type != NL80211_AUTHTYPE_FILS_PK)
7860                         return -EINVAL;
7861                 auth_data = nla_data(info->attrs[NL80211_ATTR_AUTH_DATA]);
7862                 auth_data_len = nla_len(info->attrs[NL80211_ATTR_AUTH_DATA]);
7863                 /* need to include at least Auth Transaction and Status Code */
7864                 if (auth_data_len < 4)
7865                         return -EINVAL;
7866         }
7867
7868         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
7869
7870         /*
7871          * Since we no longer track auth state, ignore
7872          * requests to only change local state.
7873          */
7874         if (local_state_change)
7875                 return 0;
7876
7877         wdev_lock(dev->ieee80211_ptr);
7878         err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
7879                                  ssid, ssid_len, ie, ie_len,
7880                                  key.p.key, key.p.key_len, key.idx,
7881                                  auth_data, auth_data_len);
7882         wdev_unlock(dev->ieee80211_ptr);
7883         return err;
7884 }
7885
7886 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
7887                                    struct genl_info *info,
7888                                    struct cfg80211_crypto_settings *settings,
7889                                    int cipher_limit)
7890 {
7891         memset(settings, 0, sizeof(*settings));
7892
7893         settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
7894
7895         if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
7896                 u16 proto;
7897
7898                 proto = nla_get_u16(
7899                         info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
7900                 settings->control_port_ethertype = cpu_to_be16(proto);
7901                 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
7902                     proto != ETH_P_PAE)
7903                         return -EINVAL;
7904                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
7905                         settings->control_port_no_encrypt = true;
7906         } else
7907                 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
7908
7909         if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
7910                 void *data;
7911                 int len, i;
7912
7913                 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
7914                 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
7915                 settings->n_ciphers_pairwise = len / sizeof(u32);
7916
7917                 if (len % sizeof(u32))
7918                         return -EINVAL;
7919
7920                 if (settings->n_ciphers_pairwise > cipher_limit)
7921                         return -EINVAL;
7922
7923                 memcpy(settings->ciphers_pairwise, data, len);
7924
7925                 for (i = 0; i < settings->n_ciphers_pairwise; i++)
7926                         if (!cfg80211_supported_cipher_suite(
7927                                         &rdev->wiphy,
7928                                         settings->ciphers_pairwise[i]))
7929                                 return -EINVAL;
7930         }
7931
7932         if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
7933                 settings->cipher_group =
7934                         nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
7935                 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
7936                                                      settings->cipher_group))
7937                         return -EINVAL;
7938         }
7939
7940         if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
7941                 settings->wpa_versions =
7942                         nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
7943                 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
7944                         return -EINVAL;
7945         }
7946
7947         if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
7948                 void *data;
7949                 int len;
7950
7951                 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
7952                 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
7953                 settings->n_akm_suites = len / sizeof(u32);
7954
7955                 if (len % sizeof(u32))
7956                         return -EINVAL;
7957
7958                 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
7959                         return -EINVAL;
7960
7961                 memcpy(settings->akm_suites, data, len);
7962         }
7963
7964         return 0;
7965 }
7966
7967 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
7968 {
7969         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7970         struct net_device *dev = info->user_ptr[1];
7971         struct ieee80211_channel *chan;
7972         struct cfg80211_assoc_request req = {};
7973         const u8 *bssid, *ssid;
7974         int err, ssid_len = 0;
7975
7976         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7977                 return -EINVAL;
7978
7979         if (!info->attrs[NL80211_ATTR_MAC] ||
7980             !info->attrs[NL80211_ATTR_SSID] ||
7981             !info->attrs[NL80211_ATTR_WIPHY_FREQ])
7982                 return -EINVAL;
7983
7984         if (!rdev->ops->assoc)
7985                 return -EOPNOTSUPP;
7986
7987         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7988             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7989                 return -EOPNOTSUPP;
7990
7991         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7992
7993         chan = nl80211_get_valid_chan(&rdev->wiphy,
7994                                       info->attrs[NL80211_ATTR_WIPHY_FREQ]);
7995         if (!chan)
7996                 return -EINVAL;
7997
7998         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7999         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8000
8001         if (info->attrs[NL80211_ATTR_IE]) {
8002                 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8003                 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8004         }
8005
8006         if (info->attrs[NL80211_ATTR_USE_MFP]) {
8007                 enum nl80211_mfp mfp =
8008                         nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
8009                 if (mfp == NL80211_MFP_REQUIRED)
8010                         req.use_mfp = true;
8011                 else if (mfp != NL80211_MFP_NO)
8012                         return -EINVAL;
8013         }
8014
8015         if (info->attrs[NL80211_ATTR_PREV_BSSID])
8016                 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
8017
8018         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
8019                 req.flags |= ASSOC_REQ_DISABLE_HT;
8020
8021         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8022                 memcpy(&req.ht_capa_mask,
8023                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
8024                        sizeof(req.ht_capa_mask));
8025
8026         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
8027                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8028                         return -EINVAL;
8029                 memcpy(&req.ht_capa,
8030                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
8031                        sizeof(req.ht_capa));
8032         }
8033
8034         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
8035                 req.flags |= ASSOC_REQ_DISABLE_VHT;
8036
8037         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
8038                 memcpy(&req.vht_capa_mask,
8039                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
8040                        sizeof(req.vht_capa_mask));
8041
8042         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
8043                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
8044                         return -EINVAL;
8045                 memcpy(&req.vht_capa,
8046                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
8047                        sizeof(req.vht_capa));
8048         }
8049
8050         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
8051                 if (!((rdev->wiphy.features &
8052                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
8053                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
8054                     !wiphy_ext_feature_isset(&rdev->wiphy,
8055                                              NL80211_EXT_FEATURE_RRM))
8056                         return -EINVAL;
8057                 req.flags |= ASSOC_REQ_USE_RRM;
8058         }
8059
8060         if (info->attrs[NL80211_ATTR_FILS_KEK]) {
8061                 req.fils_kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
8062                 req.fils_kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
8063                 if (!info->attrs[NL80211_ATTR_FILS_NONCES])
8064                         return -EINVAL;
8065                 req.fils_nonces =
8066                         nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
8067         }
8068
8069         err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
8070         if (!err) {
8071                 wdev_lock(dev->ieee80211_ptr);
8072                 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
8073                                           ssid, ssid_len, &req);
8074                 wdev_unlock(dev->ieee80211_ptr);
8075         }
8076
8077         return err;
8078 }
8079
8080 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
8081 {
8082         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8083         struct net_device *dev = info->user_ptr[1];
8084         const u8 *ie = NULL, *bssid;
8085         int ie_len = 0, err;
8086         u16 reason_code;
8087         bool local_state_change;
8088
8089         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8090                 return -EINVAL;
8091
8092         if (!info->attrs[NL80211_ATTR_MAC])
8093                 return -EINVAL;
8094
8095         if (!info->attrs[NL80211_ATTR_REASON_CODE])
8096                 return -EINVAL;
8097
8098         if (!rdev->ops->deauth)
8099                 return -EOPNOTSUPP;
8100
8101         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8102             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8103                 return -EOPNOTSUPP;
8104
8105         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8106
8107         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
8108         if (reason_code == 0) {
8109                 /* Reason Code 0 is reserved */
8110                 return -EINVAL;
8111         }
8112
8113         if (info->attrs[NL80211_ATTR_IE]) {
8114                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8115                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8116         }
8117
8118         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
8119
8120         wdev_lock(dev->ieee80211_ptr);
8121         err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
8122                                    local_state_change);
8123         wdev_unlock(dev->ieee80211_ptr);
8124         return err;
8125 }
8126
8127 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
8128 {
8129         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8130         struct net_device *dev = info->user_ptr[1];
8131         const u8 *ie = NULL, *bssid;
8132         int ie_len = 0, err;
8133         u16 reason_code;
8134         bool local_state_change;
8135
8136         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8137                 return -EINVAL;
8138
8139         if (!info->attrs[NL80211_ATTR_MAC])
8140                 return -EINVAL;
8141
8142         if (!info->attrs[NL80211_ATTR_REASON_CODE])
8143                 return -EINVAL;
8144
8145         if (!rdev->ops->disassoc)
8146                 return -EOPNOTSUPP;
8147
8148         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8149             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8150                 return -EOPNOTSUPP;
8151
8152         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8153
8154         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
8155         if (reason_code == 0) {
8156                 /* Reason Code 0 is reserved */
8157                 return -EINVAL;
8158         }
8159
8160         if (info->attrs[NL80211_ATTR_IE]) {
8161                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8162                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8163         }
8164
8165         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
8166
8167         wdev_lock(dev->ieee80211_ptr);
8168         err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
8169                                      local_state_change);
8170         wdev_unlock(dev->ieee80211_ptr);
8171         return err;
8172 }
8173
8174 static bool
8175 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
8176                          int mcast_rate[NUM_NL80211_BANDS],
8177                          int rateval)
8178 {
8179         struct wiphy *wiphy = &rdev->wiphy;
8180         bool found = false;
8181         int band, i;
8182
8183         for (band = 0; band < NUM_NL80211_BANDS; band++) {
8184                 struct ieee80211_supported_band *sband;
8185
8186                 sband = wiphy->bands[band];
8187                 if (!sband)
8188                         continue;
8189
8190                 for (i = 0; i < sband->n_bitrates; i++) {
8191                         if (sband->bitrates[i].bitrate == rateval) {
8192                                 mcast_rate[band] = i + 1;
8193                                 found = true;
8194                                 break;
8195                         }
8196                 }
8197         }
8198
8199         return found;
8200 }
8201
8202 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
8203 {
8204         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8205         struct net_device *dev = info->user_ptr[1];
8206         struct cfg80211_ibss_params ibss;
8207         struct wiphy *wiphy;
8208         struct cfg80211_cached_keys *connkeys = NULL;
8209         int err;
8210
8211         memset(&ibss, 0, sizeof(ibss));
8212
8213         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8214                 return -EINVAL;
8215
8216         if (!info->attrs[NL80211_ATTR_SSID] ||
8217             !nla_len(info->attrs[NL80211_ATTR_SSID]))
8218                 return -EINVAL;
8219
8220         ibss.beacon_interval = 100;
8221
8222         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL])
8223                 ibss.beacon_interval =
8224                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
8225
8226         err = cfg80211_validate_beacon_int(rdev, NL80211_IFTYPE_ADHOC,
8227                                            ibss.beacon_interval);
8228         if (err)
8229                 return err;
8230
8231         if (!rdev->ops->join_ibss)
8232                 return -EOPNOTSUPP;
8233
8234         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
8235                 return -EOPNOTSUPP;
8236
8237         wiphy = &rdev->wiphy;
8238
8239         if (info->attrs[NL80211_ATTR_MAC]) {
8240                 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8241
8242                 if (!is_valid_ether_addr(ibss.bssid))
8243                         return -EINVAL;
8244         }
8245         ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8246         ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8247
8248         if (info->attrs[NL80211_ATTR_IE]) {
8249                 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8250                 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8251         }
8252
8253         err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
8254         if (err)
8255                 return err;
8256
8257         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
8258                                      NL80211_IFTYPE_ADHOC))
8259                 return -EINVAL;
8260
8261         switch (ibss.chandef.width) {
8262         case NL80211_CHAN_WIDTH_5:
8263         case NL80211_CHAN_WIDTH_10:
8264         case NL80211_CHAN_WIDTH_20_NOHT:
8265                 break;
8266         case NL80211_CHAN_WIDTH_20:
8267         case NL80211_CHAN_WIDTH_40:
8268                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
8269                         return -EINVAL;
8270                 break;
8271         case NL80211_CHAN_WIDTH_80:
8272         case NL80211_CHAN_WIDTH_80P80:
8273         case NL80211_CHAN_WIDTH_160:
8274                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
8275                         return -EINVAL;
8276                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
8277                                              NL80211_EXT_FEATURE_VHT_IBSS))
8278                         return -EINVAL;
8279                 break;
8280         default:
8281                 return -EINVAL;
8282         }
8283
8284         ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
8285         ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
8286
8287         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
8288                 u8 *rates =
8289                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8290                 int n_rates =
8291                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8292                 struct ieee80211_supported_band *sband =
8293                         wiphy->bands[ibss.chandef.chan->band];
8294
8295                 err = ieee80211_get_ratemask(sband, rates, n_rates,
8296                                              &ibss.basic_rates);
8297                 if (err)
8298                         return err;
8299         }
8300
8301         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8302                 memcpy(&ibss.ht_capa_mask,
8303                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
8304                        sizeof(ibss.ht_capa_mask));
8305
8306         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
8307                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8308                         return -EINVAL;
8309                 memcpy(&ibss.ht_capa,
8310                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
8311                        sizeof(ibss.ht_capa));
8312         }
8313
8314         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
8315             !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
8316                         nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
8317                 return -EINVAL;
8318
8319         if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
8320                 bool no_ht = false;
8321
8322                 connkeys = nl80211_parse_connkeys(rdev,
8323                                           info->attrs[NL80211_ATTR_KEYS],
8324                                           &no_ht);
8325                 if (IS_ERR(connkeys))
8326                         return PTR_ERR(connkeys);
8327
8328                 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
8329                     no_ht) {
8330                         kzfree(connkeys);
8331                         return -EINVAL;
8332                 }
8333         }
8334
8335         ibss.control_port =
8336                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
8337
8338         ibss.userspace_handles_dfs =
8339                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
8340
8341         err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
8342         if (err)
8343                 kzfree(connkeys);
8344         return err;
8345 }
8346
8347 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
8348 {
8349         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8350         struct net_device *dev = info->user_ptr[1];
8351
8352         if (!rdev->ops->leave_ibss)
8353                 return -EOPNOTSUPP;
8354
8355         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
8356                 return -EOPNOTSUPP;
8357
8358         return cfg80211_leave_ibss(rdev, dev, false);
8359 }
8360
8361 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
8362 {
8363         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8364         struct net_device *dev = info->user_ptr[1];
8365         int mcast_rate[NUM_NL80211_BANDS];
8366         u32 nla_rate;
8367         int err;
8368
8369         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
8370             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
8371             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
8372                 return -EOPNOTSUPP;
8373
8374         if (!rdev->ops->set_mcast_rate)
8375                 return -EOPNOTSUPP;
8376
8377         memset(mcast_rate, 0, sizeof(mcast_rate));
8378
8379         if (!info->attrs[NL80211_ATTR_MCAST_RATE])
8380                 return -EINVAL;
8381
8382         nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
8383         if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
8384                 return -EINVAL;
8385
8386         err = rdev_set_mcast_rate(rdev, dev, mcast_rate);
8387
8388         return err;
8389 }
8390
8391 static struct sk_buff *
8392 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
8393                             struct wireless_dev *wdev, int approxlen,
8394                             u32 portid, u32 seq, enum nl80211_commands cmd,
8395                             enum nl80211_attrs attr,
8396                             const struct nl80211_vendor_cmd_info *info,
8397                             gfp_t gfp)
8398 {
8399         struct sk_buff *skb;
8400         void *hdr;
8401         struct nlattr *data;
8402
8403         skb = nlmsg_new(approxlen + 100, gfp);
8404         if (!skb)
8405                 return NULL;
8406
8407         hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
8408         if (!hdr) {
8409                 kfree_skb(skb);
8410                 return NULL;
8411         }
8412
8413         if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
8414                 goto nla_put_failure;
8415
8416         if (info) {
8417                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
8418                                 info->vendor_id))
8419                         goto nla_put_failure;
8420                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
8421                                 info->subcmd))
8422                         goto nla_put_failure;
8423         }
8424
8425         if (wdev) {
8426                 if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
8427                                       wdev_id(wdev), NL80211_ATTR_PAD))
8428                         goto nla_put_failure;
8429                 if (wdev->netdev &&
8430                     nla_put_u32(skb, NL80211_ATTR_IFINDEX,
8431                                 wdev->netdev->ifindex))
8432                         goto nla_put_failure;
8433         }
8434
8435         data = nla_nest_start(skb, attr);
8436         if (!data)
8437                 goto nla_put_failure;
8438
8439         ((void **)skb->cb)[0] = rdev;
8440         ((void **)skb->cb)[1] = hdr;
8441         ((void **)skb->cb)[2] = data;
8442
8443         return skb;
8444
8445  nla_put_failure:
8446         kfree_skb(skb);
8447         return NULL;
8448 }
8449
8450 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
8451                                            struct wireless_dev *wdev,
8452                                            enum nl80211_commands cmd,
8453                                            enum nl80211_attrs attr,
8454                                            int vendor_event_idx,
8455                                            int approxlen, gfp_t gfp)
8456 {
8457         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
8458         const struct nl80211_vendor_cmd_info *info;
8459
8460         switch (cmd) {
8461         case NL80211_CMD_TESTMODE:
8462                 if (WARN_ON(vendor_event_idx != -1))
8463                         return NULL;
8464                 info = NULL;
8465                 break;
8466         case NL80211_CMD_VENDOR:
8467                 if (WARN_ON(vendor_event_idx < 0 ||
8468                             vendor_event_idx >= wiphy->n_vendor_events))
8469                         return NULL;
8470                 info = &wiphy->vendor_events[vendor_event_idx];
8471                 break;
8472         default:
8473                 WARN_ON(1);
8474                 return NULL;
8475         }
8476
8477         return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, 0, 0,
8478                                            cmd, attr, info, gfp);
8479 }
8480 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
8481
8482 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
8483 {
8484         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
8485         void *hdr = ((void **)skb->cb)[1];
8486         struct nlattr *data = ((void **)skb->cb)[2];
8487         enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
8488
8489         /* clear CB data for netlink core to own from now on */
8490         memset(skb->cb, 0, sizeof(skb->cb));
8491
8492         nla_nest_end(skb, data);
8493         genlmsg_end(skb, hdr);
8494
8495         if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
8496                 mcgrp = NL80211_MCGRP_VENDOR;
8497
8498         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), skb, 0,
8499                                 mcgrp, gfp);
8500 }
8501 EXPORT_SYMBOL(__cfg80211_send_event_skb);
8502
8503 #ifdef CONFIG_NL80211_TESTMODE
8504 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
8505 {
8506         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8507         struct wireless_dev *wdev =
8508                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
8509         int err;
8510
8511         if (!rdev->ops->testmode_cmd)
8512                 return -EOPNOTSUPP;
8513
8514         if (IS_ERR(wdev)) {
8515                 err = PTR_ERR(wdev);
8516                 if (err != -EINVAL)
8517                         return err;
8518                 wdev = NULL;
8519         } else if (wdev->wiphy != &rdev->wiphy) {
8520                 return -EINVAL;
8521         }
8522
8523         if (!info->attrs[NL80211_ATTR_TESTDATA])
8524                 return -EINVAL;
8525
8526         rdev->cur_cmd_info = info;
8527         err = rdev_testmode_cmd(rdev, wdev,
8528                                 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
8529                                 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
8530         rdev->cur_cmd_info = NULL;
8531
8532         return err;
8533 }
8534
8535 static int nl80211_testmode_dump(struct sk_buff *skb,
8536                                  struct netlink_callback *cb)
8537 {
8538         struct cfg80211_registered_device *rdev;
8539         int err;
8540         long phy_idx;
8541         void *data = NULL;
8542         int data_len = 0;
8543
8544         rtnl_lock();
8545
8546         if (cb->args[0]) {
8547                 /*
8548                  * 0 is a valid index, but not valid for args[0],
8549                  * so we need to offset by 1.
8550                  */
8551                 phy_idx = cb->args[0] - 1;
8552         } else {
8553                 struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
8554
8555                 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
8556                                   attrbuf, nl80211_fam.maxattr, nl80211_policy);
8557                 if (err)
8558                         goto out_err;
8559
8560                 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
8561                 if (IS_ERR(rdev)) {
8562                         err = PTR_ERR(rdev);
8563                         goto out_err;
8564                 }
8565                 phy_idx = rdev->wiphy_idx;
8566                 rdev = NULL;
8567
8568                 if (attrbuf[NL80211_ATTR_TESTDATA])
8569                         cb->args[1] = (long)attrbuf[NL80211_ATTR_TESTDATA];
8570         }
8571
8572         if (cb->args[1]) {
8573                 data = nla_data((void *)cb->args[1]);
8574                 data_len = nla_len((void *)cb->args[1]);
8575         }
8576
8577         rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
8578         if (!rdev) {
8579                 err = -ENOENT;
8580                 goto out_err;
8581         }
8582
8583         if (!rdev->ops->testmode_dump) {
8584                 err = -EOPNOTSUPP;
8585                 goto out_err;
8586         }
8587
8588         while (1) {
8589                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
8590                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
8591                                            NL80211_CMD_TESTMODE);
8592                 struct nlattr *tmdata;
8593
8594                 if (!hdr)
8595                         break;
8596
8597                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
8598                         genlmsg_cancel(skb, hdr);
8599                         break;
8600                 }
8601
8602                 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
8603                 if (!tmdata) {
8604                         genlmsg_cancel(skb, hdr);
8605                         break;
8606                 }
8607                 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
8608                 nla_nest_end(skb, tmdata);
8609
8610                 if (err == -ENOBUFS || err == -ENOENT) {
8611                         genlmsg_cancel(skb, hdr);
8612                         break;
8613                 } else if (err) {
8614                         genlmsg_cancel(skb, hdr);
8615                         goto out_err;
8616                 }
8617
8618                 genlmsg_end(skb, hdr);
8619         }
8620
8621         err = skb->len;
8622         /* see above */
8623         cb->args[0] = phy_idx + 1;
8624  out_err:
8625         rtnl_unlock();
8626         return err;
8627 }
8628 #endif
8629
8630 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
8631 {
8632         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8633         struct net_device *dev = info->user_ptr[1];
8634         struct cfg80211_connect_params connect;
8635         struct wiphy *wiphy;
8636         struct cfg80211_cached_keys *connkeys = NULL;
8637         int err;
8638
8639         memset(&connect, 0, sizeof(connect));
8640
8641         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8642                 return -EINVAL;
8643
8644         if (!info->attrs[NL80211_ATTR_SSID] ||
8645             !nla_len(info->attrs[NL80211_ATTR_SSID]))
8646                 return -EINVAL;
8647
8648         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
8649                 connect.auth_type =
8650                         nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
8651                 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
8652                                              NL80211_CMD_CONNECT))
8653                         return -EINVAL;
8654         } else
8655                 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
8656
8657         connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
8658
8659         err = nl80211_crypto_settings(rdev, info, &connect.crypto,
8660                                       NL80211_MAX_NR_CIPHER_SUITES);
8661         if (err)
8662                 return err;
8663
8664         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8665             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8666                 return -EOPNOTSUPP;
8667
8668         wiphy = &rdev->wiphy;
8669
8670         connect.bg_scan_period = -1;
8671         if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
8672                 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
8673                 connect.bg_scan_period =
8674                         nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
8675         }
8676
8677         if (info->attrs[NL80211_ATTR_MAC])
8678                 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8679         else if (info->attrs[NL80211_ATTR_MAC_HINT])
8680                 connect.bssid_hint =
8681                         nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
8682         connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8683         connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8684
8685         if (info->attrs[NL80211_ATTR_IE]) {
8686                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8687                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8688         }
8689
8690         if (info->attrs[NL80211_ATTR_USE_MFP]) {
8691                 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
8692                 if (connect.mfp != NL80211_MFP_REQUIRED &&
8693                     connect.mfp != NL80211_MFP_NO)
8694                         return -EINVAL;
8695         } else {
8696                 connect.mfp = NL80211_MFP_NO;
8697         }
8698
8699         if (info->attrs[NL80211_ATTR_PREV_BSSID])
8700                 connect.prev_bssid =
8701                         nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
8702
8703         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
8704                 connect.channel = nl80211_get_valid_chan(
8705                         wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]);
8706                 if (!connect.channel)
8707                         return -EINVAL;
8708         } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
8709                 connect.channel_hint = nl80211_get_valid_chan(
8710                         wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
8711                 if (!connect.channel_hint)
8712                         return -EINVAL;
8713         }
8714
8715         if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
8716                 connkeys = nl80211_parse_connkeys(rdev,
8717                                           info->attrs[NL80211_ATTR_KEYS], NULL);
8718                 if (IS_ERR(connkeys))
8719                         return PTR_ERR(connkeys);
8720         }
8721
8722         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
8723                 connect.flags |= ASSOC_REQ_DISABLE_HT;
8724
8725         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8726                 memcpy(&connect.ht_capa_mask,
8727                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
8728                        sizeof(connect.ht_capa_mask));
8729
8730         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
8731                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
8732                         kzfree(connkeys);
8733                         return -EINVAL;
8734                 }
8735                 memcpy(&connect.ht_capa,
8736                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
8737                        sizeof(connect.ht_capa));
8738         }
8739
8740         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
8741                 connect.flags |= ASSOC_REQ_DISABLE_VHT;
8742
8743         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
8744                 memcpy(&connect.vht_capa_mask,
8745                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
8746                        sizeof(connect.vht_capa_mask));
8747
8748         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
8749                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
8750                         kzfree(connkeys);
8751                         return -EINVAL;
8752                 }
8753                 memcpy(&connect.vht_capa,
8754                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
8755                        sizeof(connect.vht_capa));
8756         }
8757
8758         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
8759                 if (!((rdev->wiphy.features &
8760                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
8761                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
8762                     !wiphy_ext_feature_isset(&rdev->wiphy,
8763                                              NL80211_EXT_FEATURE_RRM)) {
8764                         kzfree(connkeys);
8765                         return -EINVAL;
8766                 }
8767                 connect.flags |= ASSOC_REQ_USE_RRM;
8768         }
8769
8770         connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
8771         if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
8772                 kzfree(connkeys);
8773                 return -EOPNOTSUPP;
8774         }
8775
8776         if (info->attrs[NL80211_ATTR_BSS_SELECT]) {
8777                 /* bss selection makes no sense if bssid is set */
8778                 if (connect.bssid) {
8779                         kzfree(connkeys);
8780                         return -EINVAL;
8781                 }
8782
8783                 err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT],
8784                                        wiphy, &connect.bss_select);
8785                 if (err) {
8786                         kzfree(connkeys);
8787                         return err;
8788                 }
8789         }
8790
8791         wdev_lock(dev->ieee80211_ptr);
8792         err = cfg80211_connect(rdev, dev, &connect, connkeys,
8793                                connect.prev_bssid);
8794         wdev_unlock(dev->ieee80211_ptr);
8795         if (err)
8796                 kzfree(connkeys);
8797         return err;
8798 }
8799
8800 static int nl80211_update_connect_params(struct sk_buff *skb,
8801                                          struct genl_info *info)
8802 {
8803         struct cfg80211_connect_params connect = {};
8804         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8805         struct net_device *dev = info->user_ptr[1];
8806         struct wireless_dev *wdev = dev->ieee80211_ptr;
8807         u32 changed = 0;
8808         int ret;
8809
8810         if (!rdev->ops->update_connect_params)
8811                 return -EOPNOTSUPP;
8812
8813         if (info->attrs[NL80211_ATTR_IE]) {
8814                 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8815                         return -EINVAL;
8816                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8817                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8818                 changed |= UPDATE_ASSOC_IES;
8819         }
8820
8821         wdev_lock(dev->ieee80211_ptr);
8822         if (!wdev->current_bss)
8823                 ret = -ENOLINK;
8824         else
8825                 ret = rdev_update_connect_params(rdev, dev, &connect, changed);
8826         wdev_unlock(dev->ieee80211_ptr);
8827
8828         return ret;
8829 }
8830
8831 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
8832 {
8833         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8834         struct net_device *dev = info->user_ptr[1];
8835         u16 reason;
8836         int ret;
8837
8838         if (!info->attrs[NL80211_ATTR_REASON_CODE])
8839                 reason = WLAN_REASON_DEAUTH_LEAVING;
8840         else
8841                 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
8842
8843         if (reason == 0)
8844                 return -EINVAL;
8845
8846         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8847             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8848                 return -EOPNOTSUPP;
8849
8850         wdev_lock(dev->ieee80211_ptr);
8851         ret = cfg80211_disconnect(rdev, dev, reason, true);
8852         wdev_unlock(dev->ieee80211_ptr);
8853         return ret;
8854 }
8855
8856 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
8857 {
8858         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8859         struct net *net;
8860         int err;
8861
8862         if (info->attrs[NL80211_ATTR_PID]) {
8863                 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
8864
8865                 net = get_net_ns_by_pid(pid);
8866         } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
8867                 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
8868
8869                 net = get_net_ns_by_fd(fd);
8870         } else {
8871                 return -EINVAL;
8872         }
8873
8874         if (IS_ERR(net))
8875                 return PTR_ERR(net);
8876
8877         err = 0;
8878
8879         /* check if anything to do */
8880         if (!net_eq(wiphy_net(&rdev->wiphy), net))
8881                 err = cfg80211_switch_netns(rdev, net);
8882
8883         put_net(net);
8884         return err;
8885 }
8886
8887 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
8888 {
8889         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8890         int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
8891                         struct cfg80211_pmksa *pmksa) = NULL;
8892         struct net_device *dev = info->user_ptr[1];
8893         struct cfg80211_pmksa pmksa;
8894
8895         memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
8896
8897         if (!info->attrs[NL80211_ATTR_MAC])
8898                 return -EINVAL;
8899
8900         if (!info->attrs[NL80211_ATTR_PMKID])
8901                 return -EINVAL;
8902
8903         pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
8904         pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8905
8906         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8907             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8908                 return -EOPNOTSUPP;
8909
8910         switch (info->genlhdr->cmd) {
8911         case NL80211_CMD_SET_PMKSA:
8912                 rdev_ops = rdev->ops->set_pmksa;
8913                 break;
8914         case NL80211_CMD_DEL_PMKSA:
8915                 rdev_ops = rdev->ops->del_pmksa;
8916                 break;
8917         default:
8918                 WARN_ON(1);
8919                 break;
8920         }
8921
8922         if (!rdev_ops)
8923                 return -EOPNOTSUPP;
8924
8925         return rdev_ops(&rdev->wiphy, dev, &pmksa);
8926 }
8927
8928 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
8929 {
8930         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8931         struct net_device *dev = info->user_ptr[1];
8932
8933         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8934             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8935                 return -EOPNOTSUPP;
8936
8937         if (!rdev->ops->flush_pmksa)
8938                 return -EOPNOTSUPP;
8939
8940         return rdev_flush_pmksa(rdev, dev);
8941 }
8942
8943 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
8944 {
8945         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8946         struct net_device *dev = info->user_ptr[1];
8947         u8 action_code, dialog_token;
8948         u32 peer_capability = 0;
8949         u16 status_code;
8950         u8 *peer;
8951         bool initiator;
8952
8953         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
8954             !rdev->ops->tdls_mgmt)
8955                 return -EOPNOTSUPP;
8956
8957         if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
8958             !info->attrs[NL80211_ATTR_STATUS_CODE] ||
8959             !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
8960             !info->attrs[NL80211_ATTR_IE] ||
8961             !info->attrs[NL80211_ATTR_MAC])
8962                 return -EINVAL;
8963
8964         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
8965         action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
8966         status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
8967         dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
8968         initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
8969         if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
8970                 peer_capability =
8971                         nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
8972
8973         return rdev_tdls_mgmt(rdev, dev, peer, action_code,
8974                               dialog_token, status_code, peer_capability,
8975                               initiator,
8976                               nla_data(info->attrs[NL80211_ATTR_IE]),
8977                               nla_len(info->attrs[NL80211_ATTR_IE]));
8978 }
8979
8980 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
8981 {
8982         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8983         struct net_device *dev = info->user_ptr[1];
8984         enum nl80211_tdls_operation operation;
8985         u8 *peer;
8986
8987         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
8988             !rdev->ops->tdls_oper)
8989                 return -EOPNOTSUPP;
8990
8991         if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
8992             !info->attrs[NL80211_ATTR_MAC])
8993                 return -EINVAL;
8994
8995         operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
8996         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
8997
8998         return rdev_tdls_oper(rdev, dev, peer, operation);
8999 }
9000
9001 static int nl80211_remain_on_channel(struct sk_buff *skb,
9002                                      struct genl_info *info)
9003 {
9004         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9005         struct wireless_dev *wdev = info->user_ptr[1];
9006         struct cfg80211_chan_def chandef;
9007         struct sk_buff *msg;
9008         void *hdr;
9009         u64 cookie;
9010         u32 duration;
9011         int err;
9012
9013         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
9014             !info->attrs[NL80211_ATTR_DURATION])
9015                 return -EINVAL;
9016
9017         duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
9018
9019         if (!rdev->ops->remain_on_channel ||
9020             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
9021                 return -EOPNOTSUPP;
9022
9023         /*
9024          * We should be on that channel for at least a minimum amount of
9025          * time (10ms) but no longer than the driver supports.
9026          */
9027         if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
9028             duration > rdev->wiphy.max_remain_on_channel_duration)
9029                 return -EINVAL;
9030
9031         err = nl80211_parse_chandef(rdev, info, &chandef);
9032         if (err)
9033                 return err;
9034
9035         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9036         if (!msg)
9037                 return -ENOMEM;
9038
9039         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9040                              NL80211_CMD_REMAIN_ON_CHANNEL);
9041         if (!hdr) {
9042                 err = -ENOBUFS;
9043                 goto free_msg;
9044         }
9045
9046         err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
9047                                      duration, &cookie);
9048
9049         if (err)
9050                 goto free_msg;
9051
9052         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
9053                               NL80211_ATTR_PAD))
9054                 goto nla_put_failure;
9055
9056         genlmsg_end(msg, hdr);
9057
9058         return genlmsg_reply(msg, info);
9059
9060  nla_put_failure:
9061         err = -ENOBUFS;
9062  free_msg:
9063         nlmsg_free(msg);
9064         return err;
9065 }
9066
9067 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
9068                                             struct genl_info *info)
9069 {
9070         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9071         struct wireless_dev *wdev = info->user_ptr[1];
9072         u64 cookie;
9073
9074         if (!info->attrs[NL80211_ATTR_COOKIE])
9075                 return -EINVAL;
9076
9077         if (!rdev->ops->cancel_remain_on_channel)
9078                 return -EOPNOTSUPP;
9079
9080         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
9081
9082         return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
9083 }
9084
9085 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
9086                                        struct genl_info *info)
9087 {
9088         struct cfg80211_bitrate_mask mask;
9089         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9090         struct net_device *dev = info->user_ptr[1];
9091         int err;
9092
9093         if (!rdev->ops->set_bitrate_mask)
9094                 return -EOPNOTSUPP;
9095
9096         err = nl80211_parse_tx_bitrate_mask(info, &mask);
9097         if (err)
9098                 return err;
9099
9100         return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
9101 }
9102
9103 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
9104 {
9105         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9106         struct wireless_dev *wdev = info->user_ptr[1];
9107         u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
9108
9109         if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
9110                 return -EINVAL;
9111
9112         if (info->attrs[NL80211_ATTR_FRAME_TYPE])
9113                 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
9114
9115         switch (wdev->iftype) {
9116         case NL80211_IFTYPE_STATION:
9117         case NL80211_IFTYPE_ADHOC:
9118         case NL80211_IFTYPE_P2P_CLIENT:
9119         case NL80211_IFTYPE_AP:
9120         case NL80211_IFTYPE_AP_VLAN:
9121         case NL80211_IFTYPE_MESH_POINT:
9122         case NL80211_IFTYPE_P2P_GO:
9123         case NL80211_IFTYPE_P2P_DEVICE:
9124                 break;
9125         case NL80211_IFTYPE_NAN:
9126         default:
9127                 return -EOPNOTSUPP;
9128         }
9129
9130         /* not much point in registering if we can't reply */
9131         if (!rdev->ops->mgmt_tx)
9132                 return -EOPNOTSUPP;
9133
9134         return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
9135                         nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
9136                         nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
9137 }
9138
9139 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
9140 {
9141         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9142         struct wireless_dev *wdev = info->user_ptr[1];
9143         struct cfg80211_chan_def chandef;
9144         int err;
9145         void *hdr = NULL;
9146         u64 cookie;
9147         struct sk_buff *msg = NULL;
9148         struct cfg80211_mgmt_tx_params params = {
9149                 .dont_wait_for_ack =
9150                         info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
9151         };
9152
9153         if (!info->attrs[NL80211_ATTR_FRAME])
9154                 return -EINVAL;
9155
9156         if (!rdev->ops->mgmt_tx)
9157                 return -EOPNOTSUPP;
9158
9159         switch (wdev->iftype) {
9160         case NL80211_IFTYPE_P2P_DEVICE:
9161                 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
9162                         return -EINVAL;
9163         case NL80211_IFTYPE_STATION:
9164         case NL80211_IFTYPE_ADHOC:
9165         case NL80211_IFTYPE_P2P_CLIENT:
9166         case NL80211_IFTYPE_AP:
9167         case NL80211_IFTYPE_AP_VLAN:
9168         case NL80211_IFTYPE_MESH_POINT:
9169         case NL80211_IFTYPE_P2P_GO:
9170                 break;
9171         case NL80211_IFTYPE_NAN:
9172         default:
9173                 return -EOPNOTSUPP;
9174         }
9175
9176         if (info->attrs[NL80211_ATTR_DURATION]) {
9177                 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
9178                         return -EINVAL;
9179                 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
9180
9181                 /*
9182                  * We should wait on the channel for at least a minimum amount
9183                  * of time (10ms) but no longer than the driver supports.
9184                  */
9185                 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
9186                     params.wait > rdev->wiphy.max_remain_on_channel_duration)
9187                         return -EINVAL;
9188         }
9189
9190         params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
9191
9192         if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
9193                 return -EINVAL;
9194
9195         params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
9196
9197         /* get the channel if any has been specified, otherwise pass NULL to
9198          * the driver. The latter will use the current one
9199          */
9200         chandef.chan = NULL;
9201         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
9202                 err = nl80211_parse_chandef(rdev, info, &chandef);
9203                 if (err)
9204                         return err;
9205         }
9206
9207         if (!chandef.chan && params.offchan)
9208                 return -EINVAL;
9209
9210         params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
9211         params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
9212
9213         if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
9214                 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
9215                 int i;
9216
9217                 if (len % sizeof(u16))
9218                         return -EINVAL;
9219
9220                 params.n_csa_offsets = len / sizeof(u16);
9221                 params.csa_offsets =
9222                         nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
9223
9224                 /* check that all the offsets fit the frame */
9225                 for (i = 0; i < params.n_csa_offsets; i++) {
9226                         if (params.csa_offsets[i] >= params.len)
9227                                 return -EINVAL;
9228                 }
9229         }
9230
9231         if (!params.dont_wait_for_ack) {
9232                 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9233                 if (!msg)
9234                         return -ENOMEM;
9235
9236                 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9237                                      NL80211_CMD_FRAME);
9238                 if (!hdr) {
9239                         err = -ENOBUFS;
9240                         goto free_msg;
9241                 }
9242         }
9243
9244         params.chan = chandef.chan;
9245         err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
9246         if (err)
9247                 goto free_msg;
9248
9249         if (msg) {
9250                 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
9251                                       NL80211_ATTR_PAD))
9252                         goto nla_put_failure;
9253
9254                 genlmsg_end(msg, hdr);
9255                 return genlmsg_reply(msg, info);
9256         }
9257
9258         return 0;
9259
9260  nla_put_failure:
9261         err = -ENOBUFS;
9262  free_msg:
9263         nlmsg_free(msg);
9264         return err;
9265 }
9266
9267 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
9268 {
9269         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9270         struct wireless_dev *wdev = info->user_ptr[1];
9271         u64 cookie;
9272
9273         if (!info->attrs[NL80211_ATTR_COOKIE])
9274                 return -EINVAL;
9275
9276         if (!rdev->ops->mgmt_tx_cancel_wait)
9277                 return -EOPNOTSUPP;
9278
9279         switch (wdev->iftype) {
9280         case NL80211_IFTYPE_STATION:
9281         case NL80211_IFTYPE_ADHOC:
9282         case NL80211_IFTYPE_P2P_CLIENT:
9283         case NL80211_IFTYPE_AP:
9284         case NL80211_IFTYPE_AP_VLAN:
9285         case NL80211_IFTYPE_P2P_GO:
9286         case NL80211_IFTYPE_P2P_DEVICE:
9287                 break;
9288         case NL80211_IFTYPE_NAN:
9289         default:
9290                 return -EOPNOTSUPP;
9291         }
9292
9293         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
9294
9295         return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
9296 }
9297
9298 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
9299 {
9300         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9301         struct wireless_dev *wdev;
9302         struct net_device *dev = info->user_ptr[1];
9303         u8 ps_state;
9304         bool state;
9305         int err;
9306
9307         if (!info->attrs[NL80211_ATTR_PS_STATE])
9308                 return -EINVAL;
9309
9310         ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
9311
9312         if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
9313                 return -EINVAL;
9314
9315         wdev = dev->ieee80211_ptr;
9316
9317         if (!rdev->ops->set_power_mgmt)
9318                 return -EOPNOTSUPP;
9319
9320         state = (ps_state == NL80211_PS_ENABLED) ? true : false;
9321
9322         if (state == wdev->ps)
9323                 return 0;
9324
9325         err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
9326         if (!err)
9327                 wdev->ps = state;
9328         return err;
9329 }
9330
9331 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
9332 {
9333         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9334         enum nl80211_ps_state ps_state;
9335         struct wireless_dev *wdev;
9336         struct net_device *dev = info->user_ptr[1];
9337         struct sk_buff *msg;
9338         void *hdr;
9339         int err;
9340
9341         wdev = dev->ieee80211_ptr;
9342
9343         if (!rdev->ops->set_power_mgmt)
9344                 return -EOPNOTSUPP;
9345
9346         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9347         if (!msg)
9348                 return -ENOMEM;
9349
9350         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9351                              NL80211_CMD_GET_POWER_SAVE);
9352         if (!hdr) {
9353                 err = -ENOBUFS;
9354                 goto free_msg;
9355         }
9356
9357         if (wdev->ps)
9358                 ps_state = NL80211_PS_ENABLED;
9359         else
9360                 ps_state = NL80211_PS_DISABLED;
9361
9362         if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
9363                 goto nla_put_failure;
9364
9365         genlmsg_end(msg, hdr);
9366         return genlmsg_reply(msg, info);
9367
9368  nla_put_failure:
9369         err = -ENOBUFS;
9370  free_msg:
9371         nlmsg_free(msg);
9372         return err;
9373 }
9374
9375 static const struct nla_policy
9376 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
9377         [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
9378         [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
9379         [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
9380         [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
9381         [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
9382         [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
9383 };
9384
9385 static int nl80211_set_cqm_txe(struct genl_info *info,
9386                                u32 rate, u32 pkts, u32 intvl)
9387 {
9388         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9389         struct net_device *dev = info->user_ptr[1];
9390         struct wireless_dev *wdev = dev->ieee80211_ptr;
9391
9392         if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
9393                 return -EINVAL;
9394
9395         if (!rdev->ops->set_cqm_txe_config)
9396                 return -EOPNOTSUPP;
9397
9398         if (wdev->iftype != NL80211_IFTYPE_STATION &&
9399             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
9400                 return -EOPNOTSUPP;
9401
9402         return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
9403 }
9404
9405 static int nl80211_set_cqm_rssi(struct genl_info *info,
9406                                 s32 threshold, u32 hysteresis)
9407 {
9408         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9409         struct net_device *dev = info->user_ptr[1];
9410         struct wireless_dev *wdev = dev->ieee80211_ptr;
9411
9412         if (threshold > 0)
9413                 return -EINVAL;
9414
9415         /* disabling - hysteresis should also be zero then */
9416         if (threshold == 0)
9417                 hysteresis = 0;
9418
9419         if (!rdev->ops->set_cqm_rssi_config)
9420                 return -EOPNOTSUPP;
9421
9422         if (wdev->iftype != NL80211_IFTYPE_STATION &&
9423             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
9424                 return -EOPNOTSUPP;
9425
9426         return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis);
9427 }
9428
9429 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
9430 {
9431         struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
9432         struct nlattr *cqm;
9433         int err;
9434
9435         cqm = info->attrs[NL80211_ATTR_CQM];
9436         if (!cqm)
9437                 return -EINVAL;
9438
9439         err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
9440                                nl80211_attr_cqm_policy);
9441         if (err)
9442                 return err;
9443
9444         if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
9445             attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
9446                 s32 threshold = nla_get_s32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
9447                 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
9448
9449                 return nl80211_set_cqm_rssi(info, threshold, hysteresis);
9450         }
9451
9452         if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
9453             attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
9454             attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
9455                 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
9456                 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
9457                 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
9458
9459                 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
9460         }
9461
9462         return -EINVAL;
9463 }
9464
9465 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
9466 {
9467         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9468         struct net_device *dev = info->user_ptr[1];
9469         struct ocb_setup setup = {};
9470         int err;
9471
9472         err = nl80211_parse_chandef(rdev, info, &setup.chandef);
9473         if (err)
9474                 return err;
9475
9476         return cfg80211_join_ocb(rdev, dev, &setup);
9477 }
9478
9479 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
9480 {
9481         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9482         struct net_device *dev = info->user_ptr[1];
9483
9484         return cfg80211_leave_ocb(rdev, dev);
9485 }
9486
9487 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
9488 {
9489         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9490         struct net_device *dev = info->user_ptr[1];
9491         struct mesh_config cfg;
9492         struct mesh_setup setup;
9493         int err;
9494
9495         /* start with default */
9496         memcpy(&cfg, &default_mesh_config, sizeof(cfg));
9497         memcpy(&setup, &default_mesh_setup, sizeof(setup));
9498
9499         if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
9500                 /* and parse parameters if given */
9501                 err = nl80211_parse_mesh_config(info, &cfg, NULL);
9502                 if (err)
9503                         return err;
9504         }
9505
9506         if (!info->attrs[NL80211_ATTR_MESH_ID] ||
9507             !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
9508                 return -EINVAL;
9509
9510         setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
9511         setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
9512
9513         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
9514             !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
9515                             nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
9516                         return -EINVAL;
9517
9518         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
9519                 setup.beacon_interval =
9520                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
9521
9522                 err = cfg80211_validate_beacon_int(rdev,
9523                                                    NL80211_IFTYPE_MESH_POINT,
9524                                                    setup.beacon_interval);
9525                 if (err)
9526                         return err;
9527         }
9528
9529         if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
9530                 setup.dtim_period =
9531                         nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
9532                 if (setup.dtim_period < 1 || setup.dtim_period > 100)
9533                         return -EINVAL;
9534         }
9535
9536         if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
9537                 /* parse additional setup parameters if given */
9538                 err = nl80211_parse_mesh_setup(info, &setup);
9539                 if (err)
9540                         return err;
9541         }
9542
9543         if (setup.user_mpm)
9544                 cfg.auto_open_plinks = false;
9545
9546         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
9547                 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
9548                 if (err)
9549                         return err;
9550         } else {
9551                 /* cfg80211_join_mesh() will sort it out */
9552                 setup.chandef.chan = NULL;
9553         }
9554
9555         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
9556                 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
9557                 int n_rates =
9558                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
9559                 struct ieee80211_supported_band *sband;
9560
9561                 if (!setup.chandef.chan)
9562                         return -EINVAL;
9563
9564                 sband = rdev->wiphy.bands[setup.chandef.chan->band];
9565
9566                 err = ieee80211_get_ratemask(sband, rates, n_rates,
9567                                              &setup.basic_rates);
9568                 if (err)
9569                         return err;
9570         }
9571
9572         if (info->attrs[NL80211_ATTR_TX_RATES]) {
9573                 err = nl80211_parse_tx_bitrate_mask(info, &setup.beacon_rate);
9574                 if (err)
9575                         return err;
9576
9577                 err = validate_beacon_tx_rate(rdev, setup.chandef.chan->band,
9578                                               &setup.beacon_rate);
9579                 if (err)
9580                         return err;
9581         }
9582
9583         return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
9584 }
9585
9586 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
9587 {
9588         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9589         struct net_device *dev = info->user_ptr[1];
9590
9591         return cfg80211_leave_mesh(rdev, dev);
9592 }
9593
9594 #ifdef CONFIG_PM
9595 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
9596                                         struct cfg80211_registered_device *rdev)
9597 {
9598         struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
9599         struct nlattr *nl_pats, *nl_pat;
9600         int i, pat_len;
9601
9602         if (!wowlan->n_patterns)
9603                 return 0;
9604
9605         nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
9606         if (!nl_pats)
9607                 return -ENOBUFS;
9608
9609         for (i = 0; i < wowlan->n_patterns; i++) {
9610                 nl_pat = nla_nest_start(msg, i + 1);
9611                 if (!nl_pat)
9612                         return -ENOBUFS;
9613                 pat_len = wowlan->patterns[i].pattern_len;
9614                 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
9615                             wowlan->patterns[i].mask) ||
9616                     nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
9617                             wowlan->patterns[i].pattern) ||
9618                     nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
9619                                 wowlan->patterns[i].pkt_offset))
9620                         return -ENOBUFS;
9621                 nla_nest_end(msg, nl_pat);
9622         }
9623         nla_nest_end(msg, nl_pats);
9624
9625         return 0;
9626 }
9627
9628 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
9629                                    struct cfg80211_wowlan_tcp *tcp)
9630 {
9631         struct nlattr *nl_tcp;
9632
9633         if (!tcp)
9634                 return 0;
9635
9636         nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
9637         if (!nl_tcp)
9638                 return -ENOBUFS;
9639
9640         if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
9641             nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
9642             nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
9643             nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
9644             nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
9645             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
9646                     tcp->payload_len, tcp->payload) ||
9647             nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
9648                         tcp->data_interval) ||
9649             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
9650                     tcp->wake_len, tcp->wake_data) ||
9651             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
9652                     DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
9653                 return -ENOBUFS;
9654
9655         if (tcp->payload_seq.len &&
9656             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
9657                     sizeof(tcp->payload_seq), &tcp->payload_seq))
9658                 return -ENOBUFS;
9659
9660         if (tcp->payload_tok.len &&
9661             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
9662                     sizeof(tcp->payload_tok) + tcp->tokens_size,
9663                     &tcp->payload_tok))
9664                 return -ENOBUFS;
9665
9666         nla_nest_end(msg, nl_tcp);
9667
9668         return 0;
9669 }
9670
9671 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
9672                                   struct cfg80211_sched_scan_request *req)
9673 {
9674         struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan;
9675         int i;
9676
9677         if (!req)
9678                 return 0;
9679
9680         nd = nla_nest_start(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
9681         if (!nd)
9682                 return -ENOBUFS;
9683
9684         if (req->n_scan_plans == 1 &&
9685             nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL,
9686                         req->scan_plans[0].interval * 1000))
9687                 return -ENOBUFS;
9688
9689         if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
9690                 return -ENOBUFS;
9691
9692         freqs = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
9693         if (!freqs)
9694                 return -ENOBUFS;
9695
9696         for (i = 0; i < req->n_channels; i++) {
9697                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
9698                         return -ENOBUFS;
9699         }
9700
9701         nla_nest_end(msg, freqs);
9702
9703         if (req->n_match_sets) {
9704                 matches = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_MATCH);
9705                 if (!matches)
9706                         return -ENOBUFS;
9707
9708                 for (i = 0; i < req->n_match_sets; i++) {
9709                         match = nla_nest_start(msg, i);
9710                         if (!match)
9711                                 return -ENOBUFS;
9712
9713                         if (nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
9714                                     req->match_sets[i].ssid.ssid_len,
9715                                     req->match_sets[i].ssid.ssid))
9716                                 return -ENOBUFS;
9717                         nla_nest_end(msg, match);
9718                 }
9719                 nla_nest_end(msg, matches);
9720         }
9721
9722         scan_plans = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_PLANS);
9723         if (!scan_plans)
9724                 return -ENOBUFS;
9725
9726         for (i = 0; i < req->n_scan_plans; i++) {
9727                 scan_plan = nla_nest_start(msg, i + 1);
9728                 if (!scan_plan)
9729                         return -ENOBUFS;
9730
9731                 if (!scan_plan ||
9732                     nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL,
9733                                 req->scan_plans[i].interval) ||
9734                     (req->scan_plans[i].iterations &&
9735                      nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS,
9736                                  req->scan_plans[i].iterations)))
9737                         return -ENOBUFS;
9738                 nla_nest_end(msg, scan_plan);
9739         }
9740         nla_nest_end(msg, scan_plans);
9741
9742         nla_nest_end(msg, nd);
9743
9744         return 0;
9745 }
9746
9747 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
9748 {
9749         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9750         struct sk_buff *msg;
9751         void *hdr;
9752         u32 size = NLMSG_DEFAULT_SIZE;
9753
9754         if (!rdev->wiphy.wowlan)
9755                 return -EOPNOTSUPP;
9756
9757         if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
9758                 /* adjust size to have room for all the data */
9759                 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
9760                         rdev->wiphy.wowlan_config->tcp->payload_len +
9761                         rdev->wiphy.wowlan_config->tcp->wake_len +
9762                         rdev->wiphy.wowlan_config->tcp->wake_len / 8;
9763         }
9764
9765         msg = nlmsg_new(size, GFP_KERNEL);
9766         if (!msg)
9767                 return -ENOMEM;
9768
9769         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9770                              NL80211_CMD_GET_WOWLAN);
9771         if (!hdr)
9772                 goto nla_put_failure;
9773
9774         if (rdev->wiphy.wowlan_config) {
9775                 struct nlattr *nl_wowlan;
9776
9777                 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
9778                 if (!nl_wowlan)
9779                         goto nla_put_failure;
9780
9781                 if ((rdev->wiphy.wowlan_config->any &&
9782                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
9783                     (rdev->wiphy.wowlan_config->disconnect &&
9784                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
9785                     (rdev->wiphy.wowlan_config->magic_pkt &&
9786                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
9787                     (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
9788                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
9789                     (rdev->wiphy.wowlan_config->eap_identity_req &&
9790                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
9791                     (rdev->wiphy.wowlan_config->four_way_handshake &&
9792                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
9793                     (rdev->wiphy.wowlan_config->rfkill_release &&
9794                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
9795                         goto nla_put_failure;
9796
9797                 if (nl80211_send_wowlan_patterns(msg, rdev))
9798                         goto nla_put_failure;
9799
9800                 if (nl80211_send_wowlan_tcp(msg,
9801                                             rdev->wiphy.wowlan_config->tcp))
9802                         goto nla_put_failure;
9803
9804                 if (nl80211_send_wowlan_nd(
9805                             msg,
9806                             rdev->wiphy.wowlan_config->nd_config))
9807                         goto nla_put_failure;
9808
9809                 nla_nest_end(msg, nl_wowlan);
9810         }
9811
9812         genlmsg_end(msg, hdr);
9813         return genlmsg_reply(msg, info);
9814
9815 nla_put_failure:
9816         nlmsg_free(msg);
9817         return -ENOBUFS;
9818 }
9819
9820 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
9821                                     struct nlattr *attr,
9822                                     struct cfg80211_wowlan *trig)
9823 {
9824         struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
9825         struct cfg80211_wowlan_tcp *cfg;
9826         struct nl80211_wowlan_tcp_data_token *tok = NULL;
9827         struct nl80211_wowlan_tcp_data_seq *seq = NULL;
9828         u32 size;
9829         u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
9830         int err, port;
9831
9832         if (!rdev->wiphy.wowlan->tcp)
9833                 return -EINVAL;
9834
9835         err = nla_parse_nested(tb, MAX_NL80211_WOWLAN_TCP, attr,
9836                                nl80211_wowlan_tcp_policy);
9837         if (err)
9838                 return err;
9839
9840         if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
9841             !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
9842             !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
9843             !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
9844             !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
9845             !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
9846             !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
9847             !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
9848                 return -EINVAL;
9849
9850         data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
9851         if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
9852                 return -EINVAL;
9853
9854         if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
9855                         rdev->wiphy.wowlan->tcp->data_interval_max ||
9856             nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
9857                 return -EINVAL;
9858
9859         wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
9860         if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
9861                 return -EINVAL;
9862
9863         wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
9864         if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
9865                 return -EINVAL;
9866
9867         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
9868                 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
9869
9870                 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
9871                 tokens_size = tokln - sizeof(*tok);
9872
9873                 if (!tok->len || tokens_size % tok->len)
9874                         return -EINVAL;
9875                 if (!rdev->wiphy.wowlan->tcp->tok)
9876                         return -EINVAL;
9877                 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
9878                         return -EINVAL;
9879                 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
9880                         return -EINVAL;
9881                 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
9882                         return -EINVAL;
9883                 if (tok->offset + tok->len > data_size)
9884                         return -EINVAL;
9885         }
9886
9887         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
9888                 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
9889                 if (!rdev->wiphy.wowlan->tcp->seq)
9890                         return -EINVAL;
9891                 if (seq->len == 0 || seq->len > 4)
9892                         return -EINVAL;
9893                 if (seq->len + seq->offset > data_size)
9894                         return -EINVAL;
9895         }
9896
9897         size = sizeof(*cfg);
9898         size += data_size;
9899         size += wake_size + wake_mask_size;
9900         size += tokens_size;
9901
9902         cfg = kzalloc(size, GFP_KERNEL);
9903         if (!cfg)
9904                 return -ENOMEM;
9905         cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
9906         cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
9907         memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
9908                ETH_ALEN);
9909         if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
9910                 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
9911         else
9912                 port = 0;
9913 #ifdef CONFIG_INET
9914         /* allocate a socket and port for it and use it */
9915         err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
9916                             IPPROTO_TCP, &cfg->sock, 1);
9917         if (err) {
9918                 kfree(cfg);
9919                 return err;
9920         }
9921         if (inet_csk_get_port(cfg->sock->sk, port)) {
9922                 sock_release(cfg->sock);
9923                 kfree(cfg);
9924                 return -EADDRINUSE;
9925         }
9926         cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
9927 #else
9928         if (!port) {
9929                 kfree(cfg);
9930                 return -EINVAL;
9931         }
9932         cfg->src_port = port;
9933 #endif
9934
9935         cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
9936         cfg->payload_len = data_size;
9937         cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
9938         memcpy((void *)cfg->payload,
9939                nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
9940                data_size);
9941         if (seq)
9942                 cfg->payload_seq = *seq;
9943         cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
9944         cfg->wake_len = wake_size;
9945         cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
9946         memcpy((void *)cfg->wake_data,
9947                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
9948                wake_size);
9949         cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
9950                          data_size + wake_size;
9951         memcpy((void *)cfg->wake_mask,
9952                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
9953                wake_mask_size);
9954         if (tok) {
9955                 cfg->tokens_size = tokens_size;
9956                 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
9957         }
9958
9959         trig->tcp = cfg;
9960
9961         return 0;
9962 }
9963
9964 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
9965                                    const struct wiphy_wowlan_support *wowlan,
9966                                    struct nlattr *attr,
9967                                    struct cfg80211_wowlan *trig)
9968 {
9969         struct nlattr **tb;
9970         int err;
9971
9972         tb = kzalloc(NUM_NL80211_ATTR * sizeof(*tb), GFP_KERNEL);
9973         if (!tb)
9974                 return -ENOMEM;
9975
9976         if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
9977                 err = -EOPNOTSUPP;
9978                 goto out;
9979         }
9980
9981         err = nla_parse_nested(tb, NL80211_ATTR_MAX, attr, nl80211_policy);
9982         if (err)
9983                 goto out;
9984
9985         trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb);
9986         err = PTR_ERR_OR_ZERO(trig->nd_config);
9987         if (err)
9988                 trig->nd_config = NULL;
9989
9990 out:
9991         kfree(tb);
9992         return err;
9993 }
9994
9995 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
9996 {
9997         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9998         struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
9999         struct cfg80211_wowlan new_triggers = {};
10000         struct cfg80211_wowlan *ntrig;
10001         const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
10002         int err, i;
10003         bool prev_enabled = rdev->wiphy.wowlan_config;
10004         bool regular = false;
10005
10006         if (!wowlan)
10007                 return -EOPNOTSUPP;
10008
10009         if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
10010                 cfg80211_rdev_free_wowlan(rdev);
10011                 rdev->wiphy.wowlan_config = NULL;
10012                 goto set_wakeup;
10013         }
10014
10015         err = nla_parse_nested(tb, MAX_NL80211_WOWLAN_TRIG,
10016                                info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS],
10017                                nl80211_wowlan_policy);
10018         if (err)
10019                 return err;
10020
10021         if (tb[NL80211_WOWLAN_TRIG_ANY]) {
10022                 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
10023                         return -EINVAL;
10024                 new_triggers.any = true;
10025         }
10026
10027         if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
10028                 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
10029                         return -EINVAL;
10030                 new_triggers.disconnect = true;
10031                 regular = true;
10032         }
10033
10034         if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
10035                 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
10036                         return -EINVAL;
10037                 new_triggers.magic_pkt = true;
10038                 regular = true;
10039         }
10040
10041         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
10042                 return -EINVAL;
10043
10044         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
10045                 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
10046                         return -EINVAL;
10047                 new_triggers.gtk_rekey_failure = true;
10048                 regular = true;
10049         }
10050
10051         if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
10052                 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
10053                         return -EINVAL;
10054                 new_triggers.eap_identity_req = true;
10055                 regular = true;
10056         }
10057
10058         if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
10059                 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
10060                         return -EINVAL;
10061                 new_triggers.four_way_handshake = true;
10062                 regular = true;
10063         }
10064
10065         if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
10066                 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
10067                         return -EINVAL;
10068                 new_triggers.rfkill_release = true;
10069                 regular = true;
10070         }
10071
10072         if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
10073                 struct nlattr *pat;
10074                 int n_patterns = 0;
10075                 int rem, pat_len, mask_len, pkt_offset;
10076                 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
10077
10078                 regular = true;
10079
10080                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
10081                                     rem)
10082                         n_patterns++;
10083                 if (n_patterns > wowlan->n_patterns)
10084                         return -EINVAL;
10085
10086                 new_triggers.patterns = kcalloc(n_patterns,
10087                                                 sizeof(new_triggers.patterns[0]),
10088                                                 GFP_KERNEL);
10089                 if (!new_triggers.patterns)
10090                         return -ENOMEM;
10091
10092                 new_triggers.n_patterns = n_patterns;
10093                 i = 0;
10094
10095                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
10096                                     rem) {
10097                         u8 *mask_pat;
10098
10099                         nla_parse_nested(pat_tb, MAX_NL80211_PKTPAT, pat,
10100                                          NULL);
10101                         err = -EINVAL;
10102                         if (!pat_tb[NL80211_PKTPAT_MASK] ||
10103                             !pat_tb[NL80211_PKTPAT_PATTERN])
10104                                 goto error;
10105                         pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
10106                         mask_len = DIV_ROUND_UP(pat_len, 8);
10107                         if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
10108                                 goto error;
10109                         if (pat_len > wowlan->pattern_max_len ||
10110                             pat_len < wowlan->pattern_min_len)
10111                                 goto error;
10112
10113                         if (!pat_tb[NL80211_PKTPAT_OFFSET])
10114                                 pkt_offset = 0;
10115                         else
10116                                 pkt_offset = nla_get_u32(
10117                                         pat_tb[NL80211_PKTPAT_OFFSET]);
10118                         if (pkt_offset > wowlan->max_pkt_offset)
10119                                 goto error;
10120                         new_triggers.patterns[i].pkt_offset = pkt_offset;
10121
10122                         mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
10123                         if (!mask_pat) {
10124                                 err = -ENOMEM;
10125                                 goto error;
10126                         }
10127                         new_triggers.patterns[i].mask = mask_pat;
10128                         memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
10129                                mask_len);
10130                         mask_pat += mask_len;
10131                         new_triggers.patterns[i].pattern = mask_pat;
10132                         new_triggers.patterns[i].pattern_len = pat_len;
10133                         memcpy(mask_pat,
10134                                nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
10135                                pat_len);
10136                         i++;
10137                 }
10138         }
10139
10140         if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
10141                 regular = true;
10142                 err = nl80211_parse_wowlan_tcp(
10143                         rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
10144                         &new_triggers);
10145                 if (err)
10146                         goto error;
10147         }
10148
10149         if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
10150                 regular = true;
10151                 err = nl80211_parse_wowlan_nd(
10152                         rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
10153                         &new_triggers);
10154                 if (err)
10155                         goto error;
10156         }
10157
10158         /* The 'any' trigger means the device continues operating more or less
10159          * as in its normal operation mode and wakes up the host on most of the
10160          * normal interrupts (like packet RX, ...)
10161          * It therefore makes little sense to combine with the more constrained
10162          * wakeup trigger modes.
10163          */
10164         if (new_triggers.any && regular) {
10165                 err = -EINVAL;
10166                 goto error;
10167         }
10168
10169         ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
10170         if (!ntrig) {
10171                 err = -ENOMEM;
10172                 goto error;
10173         }
10174         cfg80211_rdev_free_wowlan(rdev);
10175         rdev->wiphy.wowlan_config = ntrig;
10176
10177  set_wakeup:
10178         if (rdev->ops->set_wakeup &&
10179             prev_enabled != !!rdev->wiphy.wowlan_config)
10180                 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
10181
10182         return 0;
10183  error:
10184         for (i = 0; i < new_triggers.n_patterns; i++)
10185                 kfree(new_triggers.patterns[i].mask);
10186         kfree(new_triggers.patterns);
10187         if (new_triggers.tcp && new_triggers.tcp->sock)
10188                 sock_release(new_triggers.tcp->sock);
10189         kfree(new_triggers.tcp);
10190         kfree(new_triggers.nd_config);
10191         return err;
10192 }
10193 #endif
10194
10195 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
10196                                        struct cfg80211_registered_device *rdev)
10197 {
10198         struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
10199         int i, j, pat_len;
10200         struct cfg80211_coalesce_rules *rule;
10201
10202         if (!rdev->coalesce->n_rules)
10203                 return 0;
10204
10205         nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE);
10206         if (!nl_rules)
10207                 return -ENOBUFS;
10208
10209         for (i = 0; i < rdev->coalesce->n_rules; i++) {
10210                 nl_rule = nla_nest_start(msg, i + 1);
10211                 if (!nl_rule)
10212                         return -ENOBUFS;
10213
10214                 rule = &rdev->coalesce->rules[i];
10215                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
10216                                 rule->delay))
10217                         return -ENOBUFS;
10218
10219                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
10220                                 rule->condition))
10221                         return -ENOBUFS;
10222
10223                 nl_pats = nla_nest_start(msg,
10224                                 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
10225                 if (!nl_pats)
10226                         return -ENOBUFS;
10227
10228                 for (j = 0; j < rule->n_patterns; j++) {
10229                         nl_pat = nla_nest_start(msg, j + 1);
10230                         if (!nl_pat)
10231                                 return -ENOBUFS;
10232                         pat_len = rule->patterns[j].pattern_len;
10233                         if (nla_put(msg, NL80211_PKTPAT_MASK,
10234                                     DIV_ROUND_UP(pat_len, 8),
10235                                     rule->patterns[j].mask) ||
10236                             nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
10237                                     rule->patterns[j].pattern) ||
10238                             nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
10239                                         rule->patterns[j].pkt_offset))
10240                                 return -ENOBUFS;
10241                         nla_nest_end(msg, nl_pat);
10242                 }
10243                 nla_nest_end(msg, nl_pats);
10244                 nla_nest_end(msg, nl_rule);
10245         }
10246         nla_nest_end(msg, nl_rules);
10247
10248         return 0;
10249 }
10250
10251 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
10252 {
10253         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10254         struct sk_buff *msg;
10255         void *hdr;
10256
10257         if (!rdev->wiphy.coalesce)
10258                 return -EOPNOTSUPP;
10259
10260         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10261         if (!msg)
10262                 return -ENOMEM;
10263
10264         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10265                              NL80211_CMD_GET_COALESCE);
10266         if (!hdr)
10267                 goto nla_put_failure;
10268
10269         if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
10270                 goto nla_put_failure;
10271
10272         genlmsg_end(msg, hdr);
10273         return genlmsg_reply(msg, info);
10274
10275 nla_put_failure:
10276         nlmsg_free(msg);
10277         return -ENOBUFS;
10278 }
10279
10280 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
10281 {
10282         struct cfg80211_coalesce *coalesce = rdev->coalesce;
10283         int i, j;
10284         struct cfg80211_coalesce_rules *rule;
10285
10286         if (!coalesce)
10287                 return;
10288
10289         for (i = 0; i < coalesce->n_rules; i++) {
10290                 rule = &coalesce->rules[i];
10291                 for (j = 0; j < rule->n_patterns; j++)
10292                         kfree(rule->patterns[j].mask);
10293                 kfree(rule->patterns);
10294         }
10295         kfree(coalesce->rules);
10296         kfree(coalesce);
10297         rdev->coalesce = NULL;
10298 }
10299
10300 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
10301                                        struct nlattr *rule,
10302                                        struct cfg80211_coalesce_rules *new_rule)
10303 {
10304         int err, i;
10305         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
10306         struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
10307         int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
10308         struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
10309
10310         err = nla_parse_nested(tb, NL80211_ATTR_COALESCE_RULE_MAX, rule,
10311                                nl80211_coalesce_policy);
10312         if (err)
10313                 return err;
10314
10315         if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
10316                 new_rule->delay =
10317                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
10318         if (new_rule->delay > coalesce->max_delay)
10319                 return -EINVAL;
10320
10321         if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
10322                 new_rule->condition =
10323                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
10324         if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH &&
10325             new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH)
10326                 return -EINVAL;
10327
10328         if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
10329                 return -EINVAL;
10330
10331         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
10332                             rem)
10333                 n_patterns++;
10334         if (n_patterns > coalesce->n_patterns)
10335                 return -EINVAL;
10336
10337         new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
10338                                      GFP_KERNEL);
10339         if (!new_rule->patterns)
10340                 return -ENOMEM;
10341
10342         new_rule->n_patterns = n_patterns;
10343         i = 0;
10344
10345         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
10346                             rem) {
10347                 u8 *mask_pat;
10348
10349                 nla_parse_nested(pat_tb, MAX_NL80211_PKTPAT, pat, NULL);
10350                 if (!pat_tb[NL80211_PKTPAT_MASK] ||
10351                     !pat_tb[NL80211_PKTPAT_PATTERN])
10352                         return -EINVAL;
10353                 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
10354                 mask_len = DIV_ROUND_UP(pat_len, 8);
10355                 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
10356                         return -EINVAL;
10357                 if (pat_len > coalesce->pattern_max_len ||
10358                     pat_len < coalesce->pattern_min_len)
10359                         return -EINVAL;
10360
10361                 if (!pat_tb[NL80211_PKTPAT_OFFSET])
10362                         pkt_offset = 0;
10363                 else
10364                         pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
10365                 if (pkt_offset > coalesce->max_pkt_offset)
10366                         return -EINVAL;
10367                 new_rule->patterns[i].pkt_offset = pkt_offset;
10368
10369                 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
10370                 if (!mask_pat)
10371                         return -ENOMEM;
10372
10373                 new_rule->patterns[i].mask = mask_pat;
10374                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
10375                        mask_len);
10376
10377                 mask_pat += mask_len;
10378                 new_rule->patterns[i].pattern = mask_pat;
10379                 new_rule->patterns[i].pattern_len = pat_len;
10380                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
10381                        pat_len);
10382                 i++;
10383         }
10384
10385         return 0;
10386 }
10387
10388 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
10389 {
10390         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10391         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
10392         struct cfg80211_coalesce new_coalesce = {};
10393         struct cfg80211_coalesce *n_coalesce;
10394         int err, rem_rule, n_rules = 0, i, j;
10395         struct nlattr *rule;
10396         struct cfg80211_coalesce_rules *tmp_rule;
10397
10398         if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
10399                 return -EOPNOTSUPP;
10400
10401         if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
10402                 cfg80211_rdev_free_coalesce(rdev);
10403                 rdev_set_coalesce(rdev, NULL);
10404                 return 0;
10405         }
10406
10407         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
10408                             rem_rule)
10409                 n_rules++;
10410         if (n_rules > coalesce->n_rules)
10411                 return -EINVAL;
10412
10413         new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
10414                                      GFP_KERNEL);
10415         if (!new_coalesce.rules)
10416                 return -ENOMEM;
10417
10418         new_coalesce.n_rules = n_rules;
10419         i = 0;
10420
10421         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
10422                             rem_rule) {
10423                 err = nl80211_parse_coalesce_rule(rdev, rule,
10424                                                   &new_coalesce.rules[i]);
10425                 if (err)
10426                         goto error;
10427
10428                 i++;
10429         }
10430
10431         err = rdev_set_coalesce(rdev, &new_coalesce);
10432         if (err)
10433                 goto error;
10434
10435         n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
10436         if (!n_coalesce) {
10437                 err = -ENOMEM;
10438                 goto error;
10439         }
10440         cfg80211_rdev_free_coalesce(rdev);
10441         rdev->coalesce = n_coalesce;
10442
10443         return 0;
10444 error:
10445         for (i = 0; i < new_coalesce.n_rules; i++) {
10446                 tmp_rule = &new_coalesce.rules[i];
10447                 for (j = 0; j < tmp_rule->n_patterns; j++)
10448                         kfree(tmp_rule->patterns[j].mask);
10449                 kfree(tmp_rule->patterns);
10450         }
10451         kfree(new_coalesce.rules);
10452
10453         return err;
10454 }
10455
10456 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
10457 {
10458         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10459         struct net_device *dev = info->user_ptr[1];
10460         struct wireless_dev *wdev = dev->ieee80211_ptr;
10461         struct nlattr *tb[NUM_NL80211_REKEY_DATA];
10462         struct cfg80211_gtk_rekey_data rekey_data;
10463         int err;
10464
10465         if (!info->attrs[NL80211_ATTR_REKEY_DATA])
10466                 return -EINVAL;
10467
10468         err = nla_parse_nested(tb, MAX_NL80211_REKEY_DATA,
10469                                info->attrs[NL80211_ATTR_REKEY_DATA],
10470                                nl80211_rekey_policy);
10471         if (err)
10472                 return err;
10473
10474         if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
10475                 return -ERANGE;
10476         if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
10477                 return -ERANGE;
10478         if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
10479                 return -ERANGE;
10480
10481         rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
10482         rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
10483         rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
10484
10485         wdev_lock(wdev);
10486         if (!wdev->current_bss) {
10487                 err = -ENOTCONN;
10488                 goto out;
10489         }
10490
10491         if (!rdev->ops->set_rekey_data) {
10492                 err = -EOPNOTSUPP;
10493                 goto out;
10494         }
10495
10496         err = rdev_set_rekey_data(rdev, dev, &rekey_data);
10497  out:
10498         wdev_unlock(wdev);
10499         return err;
10500 }
10501
10502 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
10503                                              struct genl_info *info)
10504 {
10505         struct net_device *dev = info->user_ptr[1];
10506         struct wireless_dev *wdev = dev->ieee80211_ptr;
10507
10508         if (wdev->iftype != NL80211_IFTYPE_AP &&
10509             wdev->iftype != NL80211_IFTYPE_P2P_GO)
10510                 return -EINVAL;
10511
10512         if (wdev->ap_unexpected_nlportid)
10513                 return -EBUSY;
10514
10515         wdev->ap_unexpected_nlportid = info->snd_portid;
10516         return 0;
10517 }
10518
10519 static int nl80211_probe_client(struct sk_buff *skb,
10520                                 struct genl_info *info)
10521 {
10522         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10523         struct net_device *dev = info->user_ptr[1];
10524         struct wireless_dev *wdev = dev->ieee80211_ptr;
10525         struct sk_buff *msg;
10526         void *hdr;
10527         const u8 *addr;
10528         u64 cookie;
10529         int err;
10530
10531         if (wdev->iftype != NL80211_IFTYPE_AP &&
10532             wdev->iftype != NL80211_IFTYPE_P2P_GO)
10533                 return -EOPNOTSUPP;
10534
10535         if (!info->attrs[NL80211_ATTR_MAC])
10536                 return -EINVAL;
10537
10538         if (!rdev->ops->probe_client)
10539                 return -EOPNOTSUPP;
10540
10541         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10542         if (!msg)
10543                 return -ENOMEM;
10544
10545         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10546                              NL80211_CMD_PROBE_CLIENT);
10547         if (!hdr) {
10548                 err = -ENOBUFS;
10549                 goto free_msg;
10550         }
10551
10552         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
10553
10554         err = rdev_probe_client(rdev, dev, addr, &cookie);
10555         if (err)
10556                 goto free_msg;
10557
10558         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
10559                               NL80211_ATTR_PAD))
10560                 goto nla_put_failure;
10561
10562         genlmsg_end(msg, hdr);
10563
10564         return genlmsg_reply(msg, info);
10565
10566  nla_put_failure:
10567         err = -ENOBUFS;
10568  free_msg:
10569         nlmsg_free(msg);
10570         return err;
10571 }
10572
10573 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
10574 {
10575         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10576         struct cfg80211_beacon_registration *reg, *nreg;
10577         int rv;
10578
10579         if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
10580                 return -EOPNOTSUPP;
10581
10582         nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
10583         if (!nreg)
10584                 return -ENOMEM;
10585
10586         /* First, check if already registered. */
10587         spin_lock_bh(&rdev->beacon_registrations_lock);
10588         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
10589                 if (reg->nlportid == info->snd_portid) {
10590                         rv = -EALREADY;
10591                         goto out_err;
10592                 }
10593         }
10594         /* Add it to the list */
10595         nreg->nlportid = info->snd_portid;
10596         list_add(&nreg->list, &rdev->beacon_registrations);
10597
10598         spin_unlock_bh(&rdev->beacon_registrations_lock);
10599
10600         return 0;
10601 out_err:
10602         spin_unlock_bh(&rdev->beacon_registrations_lock);
10603         kfree(nreg);
10604         return rv;
10605 }
10606
10607 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
10608 {
10609         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10610         struct wireless_dev *wdev = info->user_ptr[1];
10611         int err;
10612
10613         if (!rdev->ops->start_p2p_device)
10614                 return -EOPNOTSUPP;
10615
10616         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
10617                 return -EOPNOTSUPP;
10618
10619         if (wdev_running(wdev))
10620                 return 0;
10621
10622         if (rfkill_blocked(rdev->rfkill))
10623                 return -ERFKILL;
10624
10625         err = rdev_start_p2p_device(rdev, wdev);
10626         if (err)
10627                 return err;
10628
10629         wdev->is_running = true;
10630         rdev->opencount++;
10631
10632         return 0;
10633 }
10634
10635 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
10636 {
10637         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10638         struct wireless_dev *wdev = info->user_ptr[1];
10639
10640         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
10641                 return -EOPNOTSUPP;
10642
10643         if (!rdev->ops->stop_p2p_device)
10644                 return -EOPNOTSUPP;
10645
10646         cfg80211_stop_p2p_device(rdev, wdev);
10647
10648         return 0;
10649 }
10650
10651 static int nl80211_start_nan(struct sk_buff *skb, struct genl_info *info)
10652 {
10653         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10654         struct wireless_dev *wdev = info->user_ptr[1];
10655         struct cfg80211_nan_conf conf = {};
10656         int err;
10657
10658         if (wdev->iftype != NL80211_IFTYPE_NAN)
10659                 return -EOPNOTSUPP;
10660
10661         if (wdev_running(wdev))
10662                 return -EEXIST;
10663
10664         if (rfkill_blocked(rdev->rfkill))
10665                 return -ERFKILL;
10666
10667         if (!info->attrs[NL80211_ATTR_NAN_MASTER_PREF])
10668                 return -EINVAL;
10669
10670         if (!info->attrs[NL80211_ATTR_NAN_DUAL])
10671                 return -EINVAL;
10672
10673         conf.master_pref =
10674                 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
10675         if (!conf.master_pref)
10676                 return -EINVAL;
10677
10678         conf.dual = nla_get_u8(info->attrs[NL80211_ATTR_NAN_DUAL]);
10679
10680         err = rdev_start_nan(rdev, wdev, &conf);
10681         if (err)
10682                 return err;
10683
10684         wdev->is_running = true;
10685         rdev->opencount++;
10686
10687         return 0;
10688 }
10689
10690 static int nl80211_stop_nan(struct sk_buff *skb, struct genl_info *info)
10691 {
10692         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10693         struct wireless_dev *wdev = info->user_ptr[1];
10694
10695         if (wdev->iftype != NL80211_IFTYPE_NAN)
10696                 return -EOPNOTSUPP;
10697
10698         cfg80211_stop_nan(rdev, wdev);
10699
10700         return 0;
10701 }
10702
10703 static int validate_nan_filter(struct nlattr *filter_attr)
10704 {
10705         struct nlattr *attr;
10706         int len = 0, n_entries = 0, rem;
10707
10708         nla_for_each_nested(attr, filter_attr, rem) {
10709                 len += nla_len(attr);
10710                 n_entries++;
10711         }
10712
10713         if (len >= U8_MAX)
10714                 return -EINVAL;
10715
10716         return n_entries;
10717 }
10718
10719 static int handle_nan_filter(struct nlattr *attr_filter,
10720                              struct cfg80211_nan_func *func,
10721                              bool tx)
10722 {
10723         struct nlattr *attr;
10724         int n_entries, rem, i;
10725         struct cfg80211_nan_func_filter *filter;
10726
10727         n_entries = validate_nan_filter(attr_filter);
10728         if (n_entries < 0)
10729                 return n_entries;
10730
10731         BUILD_BUG_ON(sizeof(*func->rx_filters) != sizeof(*func->tx_filters));
10732
10733         filter = kcalloc(n_entries, sizeof(*func->rx_filters), GFP_KERNEL);
10734         if (!filter)
10735                 return -ENOMEM;
10736
10737         i = 0;
10738         nla_for_each_nested(attr, attr_filter, rem) {
10739                 filter[i].filter = nla_memdup(attr, GFP_KERNEL);
10740                 filter[i].len = nla_len(attr);
10741                 i++;
10742         }
10743         if (tx) {
10744                 func->num_tx_filters = n_entries;
10745                 func->tx_filters = filter;
10746         } else {
10747                 func->num_rx_filters = n_entries;
10748                 func->rx_filters = filter;
10749         }
10750
10751         return 0;
10752 }
10753
10754 static int nl80211_nan_add_func(struct sk_buff *skb,
10755                                 struct genl_info *info)
10756 {
10757         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10758         struct wireless_dev *wdev = info->user_ptr[1];
10759         struct nlattr *tb[NUM_NL80211_NAN_FUNC_ATTR], *func_attr;
10760         struct cfg80211_nan_func *func;
10761         struct sk_buff *msg = NULL;
10762         void *hdr = NULL;
10763         int err = 0;
10764
10765         if (wdev->iftype != NL80211_IFTYPE_NAN)
10766                 return -EOPNOTSUPP;
10767
10768         if (!wdev_running(wdev))
10769                 return -ENOTCONN;
10770
10771         if (!info->attrs[NL80211_ATTR_NAN_FUNC])
10772                 return -EINVAL;
10773
10774         if (wdev->owner_nlportid &&
10775             wdev->owner_nlportid != info->snd_portid)
10776                 return -ENOTCONN;
10777
10778         err = nla_parse_nested(tb, NL80211_NAN_FUNC_ATTR_MAX,
10779                                info->attrs[NL80211_ATTR_NAN_FUNC],
10780                                nl80211_nan_func_policy);
10781         if (err)
10782                 return err;
10783
10784         func = kzalloc(sizeof(*func), GFP_KERNEL);
10785         if (!func)
10786                 return -ENOMEM;
10787
10788         func->cookie = wdev->wiphy->cookie_counter++;
10789
10790         if (!tb[NL80211_NAN_FUNC_TYPE] ||
10791             nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]) > NL80211_NAN_FUNC_MAX_TYPE) {
10792                 err = -EINVAL;
10793                 goto out;
10794         }
10795
10796
10797         func->type = nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]);
10798
10799         if (!tb[NL80211_NAN_FUNC_SERVICE_ID]) {
10800                 err = -EINVAL;
10801                 goto out;
10802         }
10803
10804         memcpy(func->service_id, nla_data(tb[NL80211_NAN_FUNC_SERVICE_ID]),
10805                sizeof(func->service_id));
10806
10807         func->close_range =
10808                 nla_get_flag(tb[NL80211_NAN_FUNC_CLOSE_RANGE]);
10809
10810         if (tb[NL80211_NAN_FUNC_SERVICE_INFO]) {
10811                 func->serv_spec_info_len =
10812                         nla_len(tb[NL80211_NAN_FUNC_SERVICE_INFO]);
10813                 func->serv_spec_info =
10814                         kmemdup(nla_data(tb[NL80211_NAN_FUNC_SERVICE_INFO]),
10815                                 func->serv_spec_info_len,
10816                                 GFP_KERNEL);
10817                 if (!func->serv_spec_info) {
10818                         err = -ENOMEM;
10819                         goto out;
10820                 }
10821         }
10822
10823         if (tb[NL80211_NAN_FUNC_TTL])
10824                 func->ttl = nla_get_u32(tb[NL80211_NAN_FUNC_TTL]);
10825
10826         switch (func->type) {
10827         case NL80211_NAN_FUNC_PUBLISH:
10828                 if (!tb[NL80211_NAN_FUNC_PUBLISH_TYPE]) {
10829                         err = -EINVAL;
10830                         goto out;
10831                 }
10832
10833                 func->publish_type =
10834                         nla_get_u8(tb[NL80211_NAN_FUNC_PUBLISH_TYPE]);
10835                 func->publish_bcast =
10836                         nla_get_flag(tb[NL80211_NAN_FUNC_PUBLISH_BCAST]);
10837
10838                 if ((!(func->publish_type & NL80211_NAN_SOLICITED_PUBLISH)) &&
10839                         func->publish_bcast) {
10840                         err = -EINVAL;
10841                         goto out;
10842                 }
10843                 break;
10844         case NL80211_NAN_FUNC_SUBSCRIBE:
10845                 func->subscribe_active =
10846                         nla_get_flag(tb[NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE]);
10847                 break;
10848         case NL80211_NAN_FUNC_FOLLOW_UP:
10849                 if (!tb[NL80211_NAN_FUNC_FOLLOW_UP_ID] ||
10850                     !tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]) {
10851                         err = -EINVAL;
10852                         goto out;
10853                 }
10854
10855                 func->followup_id =
10856                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_ID]);
10857                 func->followup_reqid =
10858                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]);
10859                 memcpy(func->followup_dest.addr,
10860                        nla_data(tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]),
10861                        sizeof(func->followup_dest.addr));
10862                 if (func->ttl) {
10863                         err = -EINVAL;
10864                         goto out;
10865                 }
10866                 break;
10867         default:
10868                 err = -EINVAL;
10869                 goto out;
10870         }
10871
10872         if (tb[NL80211_NAN_FUNC_SRF]) {
10873                 struct nlattr *srf_tb[NUM_NL80211_NAN_SRF_ATTR];
10874
10875                 err = nla_parse_nested(srf_tb, NL80211_NAN_SRF_ATTR_MAX,
10876                                        tb[NL80211_NAN_FUNC_SRF],
10877                                        nl80211_nan_srf_policy);
10878                 if (err)
10879                         goto out;
10880
10881                 func->srf_include =
10882                         nla_get_flag(srf_tb[NL80211_NAN_SRF_INCLUDE]);
10883
10884                 if (srf_tb[NL80211_NAN_SRF_BF]) {
10885                         if (srf_tb[NL80211_NAN_SRF_MAC_ADDRS] ||
10886                             !srf_tb[NL80211_NAN_SRF_BF_IDX]) {
10887                                 err = -EINVAL;
10888                                 goto out;
10889                         }
10890
10891                         func->srf_bf_len =
10892                                 nla_len(srf_tb[NL80211_NAN_SRF_BF]);
10893                         func->srf_bf =
10894                                 kmemdup(nla_data(srf_tb[NL80211_NAN_SRF_BF]),
10895                                         func->srf_bf_len, GFP_KERNEL);
10896                         if (!func->srf_bf) {
10897                                 err = -ENOMEM;
10898                                 goto out;
10899                         }
10900
10901                         func->srf_bf_idx =
10902                                 nla_get_u8(srf_tb[NL80211_NAN_SRF_BF_IDX]);
10903                 } else {
10904                         struct nlattr *attr, *mac_attr =
10905                                 srf_tb[NL80211_NAN_SRF_MAC_ADDRS];
10906                         int n_entries, rem, i = 0;
10907
10908                         if (!mac_attr) {
10909                                 err = -EINVAL;
10910                                 goto out;
10911                         }
10912
10913                         n_entries = validate_acl_mac_addrs(mac_attr);
10914                         if (n_entries <= 0) {
10915                                 err = -EINVAL;
10916                                 goto out;
10917                         }
10918
10919                         func->srf_num_macs = n_entries;
10920                         func->srf_macs =
10921                                 kzalloc(sizeof(*func->srf_macs) * n_entries,
10922                                         GFP_KERNEL);
10923                         if (!func->srf_macs) {
10924                                 err = -ENOMEM;
10925                                 goto out;
10926                         }
10927
10928                         nla_for_each_nested(attr, mac_attr, rem)
10929                                 memcpy(func->srf_macs[i++].addr, nla_data(attr),
10930                                        sizeof(*func->srf_macs));
10931                 }
10932         }
10933
10934         if (tb[NL80211_NAN_FUNC_TX_MATCH_FILTER]) {
10935                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_TX_MATCH_FILTER],
10936                                         func, true);
10937                 if (err)
10938                         goto out;
10939         }
10940
10941         if (tb[NL80211_NAN_FUNC_RX_MATCH_FILTER]) {
10942                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_RX_MATCH_FILTER],
10943                                         func, false);
10944                 if (err)
10945                         goto out;
10946         }
10947
10948         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10949         if (!msg) {
10950                 err = -ENOMEM;
10951                 goto out;
10952         }
10953
10954         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10955                              NL80211_CMD_ADD_NAN_FUNCTION);
10956         /* This can't really happen - we just allocated 4KB */
10957         if (WARN_ON(!hdr)) {
10958                 err = -ENOMEM;
10959                 goto out;
10960         }
10961
10962         err = rdev_add_nan_func(rdev, wdev, func);
10963 out:
10964         if (err < 0) {
10965                 cfg80211_free_nan_func(func);
10966                 nlmsg_free(msg);
10967                 return err;
10968         }
10969
10970         /* propagate the instance id and cookie to userspace  */
10971         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, func->cookie,
10972                               NL80211_ATTR_PAD))
10973                 goto nla_put_failure;
10974
10975         func_attr = nla_nest_start(msg, NL80211_ATTR_NAN_FUNC);
10976         if (!func_attr)
10977                 goto nla_put_failure;
10978
10979         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID,
10980                        func->instance_id))
10981                 goto nla_put_failure;
10982
10983         nla_nest_end(msg, func_attr);
10984
10985         genlmsg_end(msg, hdr);
10986         return genlmsg_reply(msg, info);
10987
10988 nla_put_failure:
10989         nlmsg_free(msg);
10990         return -ENOBUFS;
10991 }
10992
10993 static int nl80211_nan_del_func(struct sk_buff *skb,
10994                                struct genl_info *info)
10995 {
10996         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10997         struct wireless_dev *wdev = info->user_ptr[1];
10998         u64 cookie;
10999
11000         if (wdev->iftype != NL80211_IFTYPE_NAN)
11001                 return -EOPNOTSUPP;
11002
11003         if (!wdev_running(wdev))
11004                 return -ENOTCONN;
11005
11006         if (!info->attrs[NL80211_ATTR_COOKIE])
11007                 return -EINVAL;
11008
11009         if (wdev->owner_nlportid &&
11010             wdev->owner_nlportid != info->snd_portid)
11011                 return -ENOTCONN;
11012
11013         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
11014
11015         rdev_del_nan_func(rdev, wdev, cookie);
11016
11017         return 0;
11018 }
11019
11020 static int nl80211_nan_change_config(struct sk_buff *skb,
11021                                      struct genl_info *info)
11022 {
11023         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11024         struct wireless_dev *wdev = info->user_ptr[1];
11025         struct cfg80211_nan_conf conf = {};
11026         u32 changed = 0;
11027
11028         if (wdev->iftype != NL80211_IFTYPE_NAN)
11029                 return -EOPNOTSUPP;
11030
11031         if (!wdev_running(wdev))
11032                 return -ENOTCONN;
11033
11034         if (info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) {
11035                 conf.master_pref =
11036                         nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
11037                 if (conf.master_pref <= 1 || conf.master_pref == 255)
11038                         return -EINVAL;
11039
11040                 changed |= CFG80211_NAN_CONF_CHANGED_PREF;
11041         }
11042
11043         if (info->attrs[NL80211_ATTR_NAN_DUAL]) {
11044                 conf.dual = nla_get_u8(info->attrs[NL80211_ATTR_NAN_DUAL]);
11045                 changed |= CFG80211_NAN_CONF_CHANGED_DUAL;
11046         }
11047
11048         if (!changed)
11049                 return -EINVAL;
11050
11051         return rdev_nan_change_conf(rdev, wdev, &conf, changed);
11052 }
11053
11054 void cfg80211_nan_match(struct wireless_dev *wdev,
11055                         struct cfg80211_nan_match_params *match, gfp_t gfp)
11056 {
11057         struct wiphy *wiphy = wdev->wiphy;
11058         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11059         struct nlattr *match_attr, *local_func_attr, *peer_func_attr;
11060         struct sk_buff *msg;
11061         void *hdr;
11062
11063         if (WARN_ON(!match->inst_id || !match->peer_inst_id || !match->addr))
11064                 return;
11065
11066         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11067         if (!msg)
11068                 return;
11069
11070         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NAN_MATCH);
11071         if (!hdr) {
11072                 nlmsg_free(msg);
11073                 return;
11074         }
11075
11076         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11077             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11078                                          wdev->netdev->ifindex)) ||
11079             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
11080                               NL80211_ATTR_PAD))
11081                 goto nla_put_failure;
11082
11083         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, match->cookie,
11084                               NL80211_ATTR_PAD) ||
11085             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, match->addr))
11086                 goto nla_put_failure;
11087
11088         match_attr = nla_nest_start(msg, NL80211_ATTR_NAN_MATCH);
11089         if (!match_attr)
11090                 goto nla_put_failure;
11091
11092         local_func_attr = nla_nest_start(msg, NL80211_NAN_MATCH_FUNC_LOCAL);
11093         if (!local_func_attr)
11094                 goto nla_put_failure;
11095
11096         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->inst_id))
11097                 goto nla_put_failure;
11098
11099         nla_nest_end(msg, local_func_attr);
11100
11101         peer_func_attr = nla_nest_start(msg, NL80211_NAN_MATCH_FUNC_PEER);
11102         if (!peer_func_attr)
11103                 goto nla_put_failure;
11104
11105         if (nla_put_u8(msg, NL80211_NAN_FUNC_TYPE, match->type) ||
11106             nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->peer_inst_id))
11107                 goto nla_put_failure;
11108
11109         if (match->info && match->info_len &&
11110             nla_put(msg, NL80211_NAN_FUNC_SERVICE_INFO, match->info_len,
11111                     match->info))
11112                 goto nla_put_failure;
11113
11114         nla_nest_end(msg, peer_func_attr);
11115         nla_nest_end(msg, match_attr);
11116         genlmsg_end(msg, hdr);
11117
11118         if (!wdev->owner_nlportid)
11119                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
11120                                         msg, 0, NL80211_MCGRP_NAN, gfp);
11121         else
11122                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
11123                                 wdev->owner_nlportid);
11124
11125         return;
11126
11127 nla_put_failure:
11128         nlmsg_free(msg);
11129 }
11130 EXPORT_SYMBOL(cfg80211_nan_match);
11131
11132 void cfg80211_nan_func_terminated(struct wireless_dev *wdev,
11133                                   u8 inst_id,
11134                                   enum nl80211_nan_func_term_reason reason,
11135                                   u64 cookie, gfp_t gfp)
11136 {
11137         struct wiphy *wiphy = wdev->wiphy;
11138         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11139         struct sk_buff *msg;
11140         struct nlattr *func_attr;
11141         void *hdr;
11142
11143         if (WARN_ON(!inst_id))
11144                 return;
11145
11146         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11147         if (!msg)
11148                 return;
11149
11150         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_NAN_FUNCTION);
11151         if (!hdr) {
11152                 nlmsg_free(msg);
11153                 return;
11154         }
11155
11156         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11157             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11158                                          wdev->netdev->ifindex)) ||
11159             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
11160                               NL80211_ATTR_PAD))
11161                 goto nla_put_failure;
11162
11163         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
11164                               NL80211_ATTR_PAD))
11165                 goto nla_put_failure;
11166
11167         func_attr = nla_nest_start(msg, NL80211_ATTR_NAN_FUNC);
11168         if (!func_attr)
11169                 goto nla_put_failure;
11170
11171         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, inst_id) ||
11172             nla_put_u8(msg, NL80211_NAN_FUNC_TERM_REASON, reason))
11173                 goto nla_put_failure;
11174
11175         nla_nest_end(msg, func_attr);
11176         genlmsg_end(msg, hdr);
11177
11178         if (!wdev->owner_nlportid)
11179                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
11180                                         msg, 0, NL80211_MCGRP_NAN, gfp);
11181         else
11182                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
11183                                 wdev->owner_nlportid);
11184
11185         return;
11186
11187 nla_put_failure:
11188         nlmsg_free(msg);
11189 }
11190 EXPORT_SYMBOL(cfg80211_nan_func_terminated);
11191
11192 static int nl80211_get_protocol_features(struct sk_buff *skb,
11193                                          struct genl_info *info)
11194 {
11195         void *hdr;
11196         struct sk_buff *msg;
11197
11198         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11199         if (!msg)
11200                 return -ENOMEM;
11201
11202         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11203                              NL80211_CMD_GET_PROTOCOL_FEATURES);
11204         if (!hdr)
11205                 goto nla_put_failure;
11206
11207         if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
11208                         NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
11209                 goto nla_put_failure;
11210
11211         genlmsg_end(msg, hdr);
11212         return genlmsg_reply(msg, info);
11213
11214  nla_put_failure:
11215         kfree_skb(msg);
11216         return -ENOBUFS;
11217 }
11218
11219 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
11220 {
11221         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11222         struct cfg80211_update_ft_ies_params ft_params;
11223         struct net_device *dev = info->user_ptr[1];
11224
11225         if (!rdev->ops->update_ft_ies)
11226                 return -EOPNOTSUPP;
11227
11228         if (!info->attrs[NL80211_ATTR_MDID] ||
11229             !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
11230                 return -EINVAL;
11231
11232         memset(&ft_params, 0, sizeof(ft_params));
11233         ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
11234         ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
11235         ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
11236
11237         return rdev_update_ft_ies(rdev, dev, &ft_params);
11238 }
11239
11240 static int nl80211_crit_protocol_start(struct sk_buff *skb,
11241                                        struct genl_info *info)
11242 {
11243         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11244         struct wireless_dev *wdev = info->user_ptr[1];
11245         enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
11246         u16 duration;
11247         int ret;
11248
11249         if (!rdev->ops->crit_proto_start)
11250                 return -EOPNOTSUPP;
11251
11252         if (WARN_ON(!rdev->ops->crit_proto_stop))
11253                 return -EINVAL;
11254
11255         if (rdev->crit_proto_nlportid)
11256                 return -EBUSY;
11257
11258         /* determine protocol if provided */
11259         if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
11260                 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
11261
11262         if (proto >= NUM_NL80211_CRIT_PROTO)
11263                 return -EINVAL;
11264
11265         /* timeout must be provided */
11266         if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
11267                 return -EINVAL;
11268
11269         duration =
11270                 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
11271
11272         if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
11273                 return -ERANGE;
11274
11275         ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
11276         if (!ret)
11277                 rdev->crit_proto_nlportid = info->snd_portid;
11278
11279         return ret;
11280 }
11281
11282 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
11283                                       struct genl_info *info)
11284 {
11285         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11286         struct wireless_dev *wdev = info->user_ptr[1];
11287
11288         if (!rdev->ops->crit_proto_stop)
11289                 return -EOPNOTSUPP;
11290
11291         if (rdev->crit_proto_nlportid) {
11292                 rdev->crit_proto_nlportid = 0;
11293                 rdev_crit_proto_stop(rdev, wdev);
11294         }
11295         return 0;
11296 }
11297
11298 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
11299 {
11300         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11301         struct wireless_dev *wdev =
11302                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
11303         int i, err;
11304         u32 vid, subcmd;
11305
11306         if (!rdev->wiphy.vendor_commands)
11307                 return -EOPNOTSUPP;
11308
11309         if (IS_ERR(wdev)) {
11310                 err = PTR_ERR(wdev);
11311                 if (err != -EINVAL)
11312                         return err;
11313                 wdev = NULL;
11314         } else if (wdev->wiphy != &rdev->wiphy) {
11315                 return -EINVAL;
11316         }
11317
11318         if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
11319             !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
11320                 return -EINVAL;
11321
11322         vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
11323         subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
11324         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
11325                 const struct wiphy_vendor_command *vcmd;
11326                 void *data = NULL;
11327                 int len = 0;
11328
11329                 vcmd = &rdev->wiphy.vendor_commands[i];
11330
11331                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
11332                         continue;
11333
11334                 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
11335                                    WIPHY_VENDOR_CMD_NEED_NETDEV)) {
11336                         if (!wdev)
11337                                 return -EINVAL;
11338                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
11339                             !wdev->netdev)
11340                                 return -EINVAL;
11341
11342                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
11343                                 if (!wdev_running(wdev))
11344                                         return -ENETDOWN;
11345                         }
11346
11347                         if (!vcmd->doit)
11348                                 return -EOPNOTSUPP;
11349                 } else {
11350                         wdev = NULL;
11351                 }
11352
11353                 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
11354                         data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
11355                         len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
11356                 }
11357
11358                 rdev->cur_cmd_info = info;
11359                 err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev,
11360                                                           data, len);
11361                 rdev->cur_cmd_info = NULL;
11362                 return err;
11363         }
11364
11365         return -EOPNOTSUPP;
11366 }
11367
11368 static int nl80211_prepare_vendor_dump(struct sk_buff *skb,
11369                                        struct netlink_callback *cb,
11370                                        struct cfg80211_registered_device **rdev,
11371                                        struct wireless_dev **wdev)
11372 {
11373         struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
11374         u32 vid, subcmd;
11375         unsigned int i;
11376         int vcmd_idx = -1;
11377         int err;
11378         void *data = NULL;
11379         unsigned int data_len = 0;
11380
11381         rtnl_lock();
11382
11383         if (cb->args[0]) {
11384                 /* subtract the 1 again here */
11385                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
11386                 struct wireless_dev *tmp;
11387
11388                 if (!wiphy) {
11389                         err = -ENODEV;
11390                         goto out_unlock;
11391                 }
11392                 *rdev = wiphy_to_rdev(wiphy);
11393                 *wdev = NULL;
11394
11395                 if (cb->args[1]) {
11396                         list_for_each_entry(tmp, &wiphy->wdev_list, list) {
11397                                 if (tmp->identifier == cb->args[1] - 1) {
11398                                         *wdev = tmp;
11399                                         break;
11400                                 }
11401                         }
11402                 }
11403
11404                 /* keep rtnl locked in successful case */
11405                 return 0;
11406         }
11407
11408         err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
11409                           attrbuf, nl80211_fam.maxattr, nl80211_policy);
11410         if (err)
11411                 goto out_unlock;
11412
11413         if (!attrbuf[NL80211_ATTR_VENDOR_ID] ||
11414             !attrbuf[NL80211_ATTR_VENDOR_SUBCMD]) {
11415                 err = -EINVAL;
11416                 goto out_unlock;
11417         }
11418
11419         *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk), attrbuf);
11420         if (IS_ERR(*wdev))
11421                 *wdev = NULL;
11422
11423         *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
11424         if (IS_ERR(*rdev)) {
11425                 err = PTR_ERR(*rdev);
11426                 goto out_unlock;
11427         }
11428
11429         vid = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_ID]);
11430         subcmd = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_SUBCMD]);
11431
11432         for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) {
11433                 const struct wiphy_vendor_command *vcmd;
11434
11435                 vcmd = &(*rdev)->wiphy.vendor_commands[i];
11436
11437                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
11438                         continue;
11439
11440                 if (!vcmd->dumpit) {
11441                         err = -EOPNOTSUPP;
11442                         goto out_unlock;
11443                 }
11444
11445                 vcmd_idx = i;
11446                 break;
11447         }
11448
11449         if (vcmd_idx < 0) {
11450                 err = -EOPNOTSUPP;
11451                 goto out_unlock;
11452         }
11453
11454         if (attrbuf[NL80211_ATTR_VENDOR_DATA]) {
11455                 data = nla_data(attrbuf[NL80211_ATTR_VENDOR_DATA]);
11456                 data_len = nla_len(attrbuf[NL80211_ATTR_VENDOR_DATA]);
11457         }
11458
11459         /* 0 is the first index - add 1 to parse only once */
11460         cb->args[0] = (*rdev)->wiphy_idx + 1;
11461         /* add 1 to know if it was NULL */
11462         cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0;
11463         cb->args[2] = vcmd_idx;
11464         cb->args[3] = (unsigned long)data;
11465         cb->args[4] = data_len;
11466
11467         /* keep rtnl locked in successful case */
11468         return 0;
11469  out_unlock:
11470         rtnl_unlock();
11471         return err;
11472 }
11473
11474 static int nl80211_vendor_cmd_dump(struct sk_buff *skb,
11475                                    struct netlink_callback *cb)
11476 {
11477         struct cfg80211_registered_device *rdev;
11478         struct wireless_dev *wdev;
11479         unsigned int vcmd_idx;
11480         const struct wiphy_vendor_command *vcmd;
11481         void *data;
11482         int data_len;
11483         int err;
11484         struct nlattr *vendor_data;
11485
11486         err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev);
11487         if (err)
11488                 return err;
11489
11490         vcmd_idx = cb->args[2];
11491         data = (void *)cb->args[3];
11492         data_len = cb->args[4];
11493         vcmd = &rdev->wiphy.vendor_commands[vcmd_idx];
11494
11495         if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
11496                            WIPHY_VENDOR_CMD_NEED_NETDEV)) {
11497                 if (!wdev)
11498                         return -EINVAL;
11499                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
11500                     !wdev->netdev)
11501                         return -EINVAL;
11502
11503                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
11504                         if (!wdev_running(wdev))
11505                                 return -ENETDOWN;
11506                 }
11507         }
11508
11509         while (1) {
11510                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
11511                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
11512                                            NL80211_CMD_VENDOR);
11513                 if (!hdr)
11514                         break;
11515
11516                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11517                     (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
11518                                                wdev_id(wdev),
11519                                                NL80211_ATTR_PAD))) {
11520                         genlmsg_cancel(skb, hdr);
11521                         break;
11522                 }
11523
11524                 vendor_data = nla_nest_start(skb, NL80211_ATTR_VENDOR_DATA);
11525                 if (!vendor_data) {
11526                         genlmsg_cancel(skb, hdr);
11527                         break;
11528                 }
11529
11530                 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len,
11531                                    (unsigned long *)&cb->args[5]);
11532                 nla_nest_end(skb, vendor_data);
11533
11534                 if (err == -ENOBUFS || err == -ENOENT) {
11535                         genlmsg_cancel(skb, hdr);
11536                         break;
11537                 } else if (err) {
11538                         genlmsg_cancel(skb, hdr);
11539                         goto out;
11540                 }
11541
11542                 genlmsg_end(skb, hdr);
11543         }
11544
11545         err = skb->len;
11546  out:
11547         rtnl_unlock();
11548         return err;
11549 }
11550
11551 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
11552                                            enum nl80211_commands cmd,
11553                                            enum nl80211_attrs attr,
11554                                            int approxlen)
11555 {
11556         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11557
11558         if (WARN_ON(!rdev->cur_cmd_info))
11559                 return NULL;
11560
11561         return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
11562                                            rdev->cur_cmd_info->snd_portid,
11563                                            rdev->cur_cmd_info->snd_seq,
11564                                            cmd, attr, NULL, GFP_KERNEL);
11565 }
11566 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
11567
11568 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
11569 {
11570         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
11571         void *hdr = ((void **)skb->cb)[1];
11572         struct nlattr *data = ((void **)skb->cb)[2];
11573
11574         /* clear CB data for netlink core to own from now on */
11575         memset(skb->cb, 0, sizeof(skb->cb));
11576
11577         if (WARN_ON(!rdev->cur_cmd_info)) {
11578                 kfree_skb(skb);
11579                 return -EINVAL;
11580         }
11581
11582         nla_nest_end(skb, data);
11583         genlmsg_end(skb, hdr);
11584         return genlmsg_reply(skb, rdev->cur_cmd_info);
11585 }
11586 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
11587
11588 static int nl80211_set_qos_map(struct sk_buff *skb,
11589                                struct genl_info *info)
11590 {
11591         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11592         struct cfg80211_qos_map *qos_map = NULL;
11593         struct net_device *dev = info->user_ptr[1];
11594         u8 *pos, len, num_des, des_len, des;
11595         int ret;
11596
11597         if (!rdev->ops->set_qos_map)
11598                 return -EOPNOTSUPP;
11599
11600         if (info->attrs[NL80211_ATTR_QOS_MAP]) {
11601                 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
11602                 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
11603
11604                 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
11605                     len > IEEE80211_QOS_MAP_LEN_MAX)
11606                         return -EINVAL;
11607
11608                 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
11609                 if (!qos_map)
11610                         return -ENOMEM;
11611
11612                 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
11613                 if (num_des) {
11614                         des_len = num_des *
11615                                 sizeof(struct cfg80211_dscp_exception);
11616                         memcpy(qos_map->dscp_exception, pos, des_len);
11617                         qos_map->num_des = num_des;
11618                         for (des = 0; des < num_des; des++) {
11619                                 if (qos_map->dscp_exception[des].up > 7) {
11620                                         kfree(qos_map);
11621                                         return -EINVAL;
11622                                 }
11623                         }
11624                         pos += des_len;
11625                 }
11626                 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
11627         }
11628
11629         wdev_lock(dev->ieee80211_ptr);
11630         ret = nl80211_key_allowed(dev->ieee80211_ptr);
11631         if (!ret)
11632                 ret = rdev_set_qos_map(rdev, dev, qos_map);
11633         wdev_unlock(dev->ieee80211_ptr);
11634
11635         kfree(qos_map);
11636         return ret;
11637 }
11638
11639 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
11640 {
11641         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11642         struct net_device *dev = info->user_ptr[1];
11643         struct wireless_dev *wdev = dev->ieee80211_ptr;
11644         const u8 *peer;
11645         u8 tsid, up;
11646         u16 admitted_time = 0;
11647         int err;
11648
11649         if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
11650                 return -EOPNOTSUPP;
11651
11652         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
11653             !info->attrs[NL80211_ATTR_USER_PRIO])
11654                 return -EINVAL;
11655
11656         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
11657         if (tsid >= IEEE80211_NUM_TIDS)
11658                 return -EINVAL;
11659
11660         up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
11661         if (up >= IEEE80211_NUM_UPS)
11662                 return -EINVAL;
11663
11664         /* WMM uses TIDs 0-7 even for TSPEC */
11665         if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
11666                 /* TODO: handle 802.11 TSPEC/admission control
11667                  * need more attributes for that (e.g. BA session requirement);
11668                  * change the WMM adminssion test above to allow both then
11669                  */
11670                 return -EINVAL;
11671         }
11672
11673         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
11674
11675         if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
11676                 admitted_time =
11677                         nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
11678                 if (!admitted_time)
11679                         return -EINVAL;
11680         }
11681
11682         wdev_lock(wdev);
11683         switch (wdev->iftype) {
11684         case NL80211_IFTYPE_STATION:
11685         case NL80211_IFTYPE_P2P_CLIENT:
11686                 if (wdev->current_bss)
11687                         break;
11688                 err = -ENOTCONN;
11689                 goto out;
11690         default:
11691                 err = -EOPNOTSUPP;
11692                 goto out;
11693         }
11694
11695         err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
11696
11697  out:
11698         wdev_unlock(wdev);
11699         return err;
11700 }
11701
11702 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
11703 {
11704         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11705         struct net_device *dev = info->user_ptr[1];
11706         struct wireless_dev *wdev = dev->ieee80211_ptr;
11707         const u8 *peer;
11708         u8 tsid;
11709         int err;
11710
11711         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
11712                 return -EINVAL;
11713
11714         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
11715         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
11716
11717         wdev_lock(wdev);
11718         err = rdev_del_tx_ts(rdev, dev, tsid, peer);
11719         wdev_unlock(wdev);
11720
11721         return err;
11722 }
11723
11724 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
11725                                        struct genl_info *info)
11726 {
11727         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11728         struct net_device *dev = info->user_ptr[1];
11729         struct wireless_dev *wdev = dev->ieee80211_ptr;
11730         struct cfg80211_chan_def chandef = {};
11731         const u8 *addr;
11732         u8 oper_class;
11733         int err;
11734
11735         if (!rdev->ops->tdls_channel_switch ||
11736             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
11737                 return -EOPNOTSUPP;
11738
11739         switch (dev->ieee80211_ptr->iftype) {
11740         case NL80211_IFTYPE_STATION:
11741         case NL80211_IFTYPE_P2P_CLIENT:
11742                 break;
11743         default:
11744                 return -EOPNOTSUPP;
11745         }
11746
11747         if (!info->attrs[NL80211_ATTR_MAC] ||
11748             !info->attrs[NL80211_ATTR_OPER_CLASS])
11749                 return -EINVAL;
11750
11751         err = nl80211_parse_chandef(rdev, info, &chandef);
11752         if (err)
11753                 return err;
11754
11755         /*
11756          * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
11757          * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
11758          * specification is not defined for them.
11759          */
11760         if (chandef.chan->band == NL80211_BAND_2GHZ &&
11761             chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
11762             chandef.width != NL80211_CHAN_WIDTH_20)
11763                 return -EINVAL;
11764
11765         /* we will be active on the TDLS link */
11766         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
11767                                            wdev->iftype))
11768                 return -EINVAL;
11769
11770         /* don't allow switching to DFS channels */
11771         if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
11772                 return -EINVAL;
11773
11774         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
11775         oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
11776
11777         wdev_lock(wdev);
11778         err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
11779         wdev_unlock(wdev);
11780
11781         return err;
11782 }
11783
11784 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
11785                                               struct genl_info *info)
11786 {
11787         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11788         struct net_device *dev = info->user_ptr[1];
11789         struct wireless_dev *wdev = dev->ieee80211_ptr;
11790         const u8 *addr;
11791
11792         if (!rdev->ops->tdls_channel_switch ||
11793             !rdev->ops->tdls_cancel_channel_switch ||
11794             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
11795                 return -EOPNOTSUPP;
11796
11797         switch (dev->ieee80211_ptr->iftype) {
11798         case NL80211_IFTYPE_STATION:
11799         case NL80211_IFTYPE_P2P_CLIENT:
11800                 break;
11801         default:
11802                 return -EOPNOTSUPP;
11803         }
11804
11805         if (!info->attrs[NL80211_ATTR_MAC])
11806                 return -EINVAL;
11807
11808         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
11809
11810         wdev_lock(wdev);
11811         rdev_tdls_cancel_channel_switch(rdev, dev, addr);
11812         wdev_unlock(wdev);
11813
11814         return 0;
11815 }
11816
11817 static int nl80211_set_multicast_to_unicast(struct sk_buff *skb,
11818                                             struct genl_info *info)
11819 {
11820         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11821         struct net_device *dev = info->user_ptr[1];
11822         struct wireless_dev *wdev = dev->ieee80211_ptr;
11823         const struct nlattr *nla;
11824         bool enabled;
11825
11826         if (netif_running(dev))
11827                 return -EBUSY;
11828
11829         if (!rdev->ops->set_multicast_to_unicast)
11830                 return -EOPNOTSUPP;
11831
11832         if (wdev->iftype != NL80211_IFTYPE_AP &&
11833             wdev->iftype != NL80211_IFTYPE_P2P_GO)
11834                 return -EOPNOTSUPP;
11835
11836         nla = info->attrs[NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED];
11837         enabled = nla_get_flag(nla);
11838
11839         return rdev_set_multicast_to_unicast(rdev, dev, enabled);
11840 }
11841
11842 #define NL80211_FLAG_NEED_WIPHY         0x01
11843 #define NL80211_FLAG_NEED_NETDEV        0x02
11844 #define NL80211_FLAG_NEED_RTNL          0x04
11845 #define NL80211_FLAG_CHECK_NETDEV_UP    0x08
11846 #define NL80211_FLAG_NEED_NETDEV_UP     (NL80211_FLAG_NEED_NETDEV |\
11847                                          NL80211_FLAG_CHECK_NETDEV_UP)
11848 #define NL80211_FLAG_NEED_WDEV          0x10
11849 /* If a netdev is associated, it must be UP, P2P must be started */
11850 #define NL80211_FLAG_NEED_WDEV_UP       (NL80211_FLAG_NEED_WDEV |\
11851                                          NL80211_FLAG_CHECK_NETDEV_UP)
11852 #define NL80211_FLAG_CLEAR_SKB          0x20
11853
11854 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
11855                             struct genl_info *info)
11856 {
11857         struct cfg80211_registered_device *rdev;
11858         struct wireless_dev *wdev;
11859         struct net_device *dev;
11860         bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
11861
11862         if (rtnl)
11863                 rtnl_lock();
11864
11865         if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
11866                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
11867                 if (IS_ERR(rdev)) {
11868                         if (rtnl)
11869                                 rtnl_unlock();
11870                         return PTR_ERR(rdev);
11871                 }
11872                 info->user_ptr[0] = rdev;
11873         } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
11874                    ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
11875                 ASSERT_RTNL();
11876
11877                 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
11878                                                   info->attrs);
11879                 if (IS_ERR(wdev)) {
11880                         if (rtnl)
11881                                 rtnl_unlock();
11882                         return PTR_ERR(wdev);
11883                 }
11884
11885                 dev = wdev->netdev;
11886                 rdev = wiphy_to_rdev(wdev->wiphy);
11887
11888                 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
11889                         if (!dev) {
11890                                 if (rtnl)
11891                                         rtnl_unlock();
11892                                 return -EINVAL;
11893                         }
11894
11895                         info->user_ptr[1] = dev;
11896                 } else {
11897                         info->user_ptr[1] = wdev;
11898                 }
11899
11900                 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
11901                     !wdev_running(wdev)) {
11902                         if (rtnl)
11903                                 rtnl_unlock();
11904                         return -ENETDOWN;
11905                 }
11906
11907                 if (dev)
11908                         dev_hold(dev);
11909
11910                 info->user_ptr[0] = rdev;
11911         }
11912
11913         return 0;
11914 }
11915
11916 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
11917                               struct genl_info *info)
11918 {
11919         if (info->user_ptr[1]) {
11920                 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
11921                         struct wireless_dev *wdev = info->user_ptr[1];
11922
11923                         if (wdev->netdev)
11924                                 dev_put(wdev->netdev);
11925                 } else {
11926                         dev_put(info->user_ptr[1]);
11927                 }
11928         }
11929
11930         if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
11931                 rtnl_unlock();
11932
11933         /* If needed, clear the netlink message payload from the SKB
11934          * as it might contain key data that shouldn't stick around on
11935          * the heap after the SKB is freed. The netlink message header
11936          * is still needed for further processing, so leave it intact.
11937          */
11938         if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
11939                 struct nlmsghdr *nlh = nlmsg_hdr(skb);
11940
11941                 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
11942         }
11943 }
11944
11945 static const struct genl_ops nl80211_ops[] = {
11946         {
11947                 .cmd = NL80211_CMD_GET_WIPHY,
11948                 .doit = nl80211_get_wiphy,
11949                 .dumpit = nl80211_dump_wiphy,
11950                 .done = nl80211_dump_wiphy_done,
11951                 .policy = nl80211_policy,
11952                 /* can be retrieved by unprivileged users */
11953                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11954                                   NL80211_FLAG_NEED_RTNL,
11955         },
11956         {
11957                 .cmd = NL80211_CMD_SET_WIPHY,
11958                 .doit = nl80211_set_wiphy,
11959                 .policy = nl80211_policy,
11960                 .flags = GENL_UNS_ADMIN_PERM,
11961                 .internal_flags = NL80211_FLAG_NEED_RTNL,
11962         },
11963         {
11964                 .cmd = NL80211_CMD_GET_INTERFACE,
11965                 .doit = nl80211_get_interface,
11966                 .dumpit = nl80211_dump_interface,
11967                 .policy = nl80211_policy,
11968                 /* can be retrieved by unprivileged users */
11969                 .internal_flags = NL80211_FLAG_NEED_WDEV |
11970                                   NL80211_FLAG_NEED_RTNL,
11971         },
11972         {
11973                 .cmd = NL80211_CMD_SET_INTERFACE,
11974                 .doit = nl80211_set_interface,
11975                 .policy = nl80211_policy,
11976                 .flags = GENL_UNS_ADMIN_PERM,
11977                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11978                                   NL80211_FLAG_NEED_RTNL,
11979         },
11980         {
11981                 .cmd = NL80211_CMD_NEW_INTERFACE,
11982                 .doit = nl80211_new_interface,
11983                 .policy = nl80211_policy,
11984                 .flags = GENL_UNS_ADMIN_PERM,
11985                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11986                                   NL80211_FLAG_NEED_RTNL,
11987         },
11988         {
11989                 .cmd = NL80211_CMD_DEL_INTERFACE,
11990                 .doit = nl80211_del_interface,
11991                 .policy = nl80211_policy,
11992                 .flags = GENL_UNS_ADMIN_PERM,
11993                 .internal_flags = NL80211_FLAG_NEED_WDEV |
11994                                   NL80211_FLAG_NEED_RTNL,
11995         },
11996         {
11997                 .cmd = NL80211_CMD_GET_KEY,
11998                 .doit = nl80211_get_key,
11999                 .policy = nl80211_policy,
12000                 .flags = GENL_UNS_ADMIN_PERM,
12001                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12002                                   NL80211_FLAG_NEED_RTNL,
12003         },
12004         {
12005                 .cmd = NL80211_CMD_SET_KEY,
12006                 .doit = nl80211_set_key,
12007                 .policy = nl80211_policy,
12008                 .flags = GENL_UNS_ADMIN_PERM,
12009                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12010                                   NL80211_FLAG_NEED_RTNL |
12011                                   NL80211_FLAG_CLEAR_SKB,
12012         },
12013         {
12014                 .cmd = NL80211_CMD_NEW_KEY,
12015                 .doit = nl80211_new_key,
12016                 .policy = nl80211_policy,
12017                 .flags = GENL_UNS_ADMIN_PERM,
12018                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12019                                   NL80211_FLAG_NEED_RTNL |
12020                                   NL80211_FLAG_CLEAR_SKB,
12021         },
12022         {
12023                 .cmd = NL80211_CMD_DEL_KEY,
12024                 .doit = nl80211_del_key,
12025                 .policy = nl80211_policy,
12026                 .flags = GENL_UNS_ADMIN_PERM,
12027                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12028                                   NL80211_FLAG_NEED_RTNL,
12029         },
12030         {
12031                 .cmd = NL80211_CMD_SET_BEACON,
12032                 .policy = nl80211_policy,
12033                 .flags = GENL_UNS_ADMIN_PERM,
12034                 .doit = nl80211_set_beacon,
12035                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12036                                   NL80211_FLAG_NEED_RTNL,
12037         },
12038         {
12039                 .cmd = NL80211_CMD_START_AP,
12040                 .policy = nl80211_policy,
12041                 .flags = GENL_UNS_ADMIN_PERM,
12042                 .doit = nl80211_start_ap,
12043                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12044                                   NL80211_FLAG_NEED_RTNL,
12045         },
12046         {
12047                 .cmd = NL80211_CMD_STOP_AP,
12048                 .policy = nl80211_policy,
12049                 .flags = GENL_UNS_ADMIN_PERM,
12050                 .doit = nl80211_stop_ap,
12051                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12052                                   NL80211_FLAG_NEED_RTNL,
12053         },
12054         {
12055                 .cmd = NL80211_CMD_GET_STATION,
12056                 .doit = nl80211_get_station,
12057                 .dumpit = nl80211_dump_station,
12058                 .policy = nl80211_policy,
12059                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12060                                   NL80211_FLAG_NEED_RTNL,
12061         },
12062         {
12063                 .cmd = NL80211_CMD_SET_STATION,
12064                 .doit = nl80211_set_station,
12065                 .policy = nl80211_policy,
12066                 .flags = GENL_UNS_ADMIN_PERM,
12067                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12068                                   NL80211_FLAG_NEED_RTNL,
12069         },
12070         {
12071                 .cmd = NL80211_CMD_NEW_STATION,
12072                 .doit = nl80211_new_station,
12073                 .policy = nl80211_policy,
12074                 .flags = GENL_UNS_ADMIN_PERM,
12075                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12076                                   NL80211_FLAG_NEED_RTNL,
12077         },
12078         {
12079                 .cmd = NL80211_CMD_DEL_STATION,
12080                 .doit = nl80211_del_station,
12081                 .policy = nl80211_policy,
12082                 .flags = GENL_UNS_ADMIN_PERM,
12083                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12084                                   NL80211_FLAG_NEED_RTNL,
12085         },
12086         {
12087                 .cmd = NL80211_CMD_GET_MPATH,
12088                 .doit = nl80211_get_mpath,
12089                 .dumpit = nl80211_dump_mpath,
12090                 .policy = nl80211_policy,
12091                 .flags = GENL_UNS_ADMIN_PERM,
12092                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12093                                   NL80211_FLAG_NEED_RTNL,
12094         },
12095         {
12096                 .cmd = NL80211_CMD_GET_MPP,
12097                 .doit = nl80211_get_mpp,
12098                 .dumpit = nl80211_dump_mpp,
12099                 .policy = nl80211_policy,
12100                 .flags = GENL_UNS_ADMIN_PERM,
12101                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12102                                   NL80211_FLAG_NEED_RTNL,
12103         },
12104         {
12105                 .cmd = NL80211_CMD_SET_MPATH,
12106                 .doit = nl80211_set_mpath,
12107                 .policy = nl80211_policy,
12108                 .flags = GENL_UNS_ADMIN_PERM,
12109                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12110                                   NL80211_FLAG_NEED_RTNL,
12111         },
12112         {
12113                 .cmd = NL80211_CMD_NEW_MPATH,
12114                 .doit = nl80211_new_mpath,
12115                 .policy = nl80211_policy,
12116                 .flags = GENL_UNS_ADMIN_PERM,
12117                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12118                                   NL80211_FLAG_NEED_RTNL,
12119         },
12120         {
12121                 .cmd = NL80211_CMD_DEL_MPATH,
12122                 .doit = nl80211_del_mpath,
12123                 .policy = nl80211_policy,
12124                 .flags = GENL_UNS_ADMIN_PERM,
12125                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12126                                   NL80211_FLAG_NEED_RTNL,
12127         },
12128         {
12129                 .cmd = NL80211_CMD_SET_BSS,
12130                 .doit = nl80211_set_bss,
12131                 .policy = nl80211_policy,
12132                 .flags = GENL_UNS_ADMIN_PERM,
12133                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12134                                   NL80211_FLAG_NEED_RTNL,
12135         },
12136         {
12137                 .cmd = NL80211_CMD_GET_REG,
12138                 .doit = nl80211_get_reg_do,
12139                 .dumpit = nl80211_get_reg_dump,
12140                 .policy = nl80211_policy,
12141                 .internal_flags = NL80211_FLAG_NEED_RTNL,
12142                 /* can be retrieved by unprivileged users */
12143         },
12144 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
12145         {
12146                 .cmd = NL80211_CMD_SET_REG,
12147                 .doit = nl80211_set_reg,
12148                 .policy = nl80211_policy,
12149                 .flags = GENL_ADMIN_PERM,
12150                 .internal_flags = NL80211_FLAG_NEED_RTNL,
12151         },
12152 #endif
12153         {
12154                 .cmd = NL80211_CMD_REQ_SET_REG,
12155                 .doit = nl80211_req_set_reg,
12156                 .policy = nl80211_policy,
12157                 .flags = GENL_ADMIN_PERM,
12158         },
12159         {
12160                 .cmd = NL80211_CMD_GET_MESH_CONFIG,
12161                 .doit = nl80211_get_mesh_config,
12162                 .policy = nl80211_policy,
12163                 /* can be retrieved by unprivileged users */
12164                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12165                                   NL80211_FLAG_NEED_RTNL,
12166         },
12167         {
12168                 .cmd = NL80211_CMD_SET_MESH_CONFIG,
12169                 .doit = nl80211_update_mesh_config,
12170                 .policy = nl80211_policy,
12171                 .flags = GENL_UNS_ADMIN_PERM,
12172                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12173                                   NL80211_FLAG_NEED_RTNL,
12174         },
12175         {
12176                 .cmd = NL80211_CMD_TRIGGER_SCAN,
12177                 .doit = nl80211_trigger_scan,
12178                 .policy = nl80211_policy,
12179                 .flags = GENL_UNS_ADMIN_PERM,
12180                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12181                                   NL80211_FLAG_NEED_RTNL,
12182         },
12183         {
12184                 .cmd = NL80211_CMD_ABORT_SCAN,
12185                 .doit = nl80211_abort_scan,
12186                 .policy = nl80211_policy,
12187                 .flags = GENL_UNS_ADMIN_PERM,
12188                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12189                                   NL80211_FLAG_NEED_RTNL,
12190         },
12191         {
12192                 .cmd = NL80211_CMD_GET_SCAN,
12193                 .policy = nl80211_policy,
12194                 .dumpit = nl80211_dump_scan,
12195         },
12196         {
12197                 .cmd = NL80211_CMD_START_SCHED_SCAN,
12198                 .doit = nl80211_start_sched_scan,
12199                 .policy = nl80211_policy,
12200                 .flags = GENL_UNS_ADMIN_PERM,
12201                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12202                                   NL80211_FLAG_NEED_RTNL,
12203         },
12204         {
12205                 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
12206                 .doit = nl80211_stop_sched_scan,
12207                 .policy = nl80211_policy,
12208                 .flags = GENL_UNS_ADMIN_PERM,
12209                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12210                                   NL80211_FLAG_NEED_RTNL,
12211         },
12212         {
12213                 .cmd = NL80211_CMD_AUTHENTICATE,
12214                 .doit = nl80211_authenticate,
12215                 .policy = nl80211_policy,
12216                 .flags = GENL_UNS_ADMIN_PERM,
12217                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12218                                   NL80211_FLAG_NEED_RTNL |
12219                                   NL80211_FLAG_CLEAR_SKB,
12220         },
12221         {
12222                 .cmd = NL80211_CMD_ASSOCIATE,
12223                 .doit = nl80211_associate,
12224                 .policy = nl80211_policy,
12225                 .flags = GENL_UNS_ADMIN_PERM,
12226                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12227                                   NL80211_FLAG_NEED_RTNL,
12228         },
12229         {
12230                 .cmd = NL80211_CMD_DEAUTHENTICATE,
12231                 .doit = nl80211_deauthenticate,
12232                 .policy = nl80211_policy,
12233                 .flags = GENL_UNS_ADMIN_PERM,
12234                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12235                                   NL80211_FLAG_NEED_RTNL,
12236         },
12237         {
12238                 .cmd = NL80211_CMD_DISASSOCIATE,
12239                 .doit = nl80211_disassociate,
12240                 .policy = nl80211_policy,
12241                 .flags = GENL_UNS_ADMIN_PERM,
12242                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12243                                   NL80211_FLAG_NEED_RTNL,
12244         },
12245         {
12246                 .cmd = NL80211_CMD_JOIN_IBSS,
12247                 .doit = nl80211_join_ibss,
12248                 .policy = nl80211_policy,
12249                 .flags = GENL_UNS_ADMIN_PERM,
12250                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12251                                   NL80211_FLAG_NEED_RTNL,
12252         },
12253         {
12254                 .cmd = NL80211_CMD_LEAVE_IBSS,
12255                 .doit = nl80211_leave_ibss,
12256                 .policy = nl80211_policy,
12257                 .flags = GENL_UNS_ADMIN_PERM,
12258                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12259                                   NL80211_FLAG_NEED_RTNL,
12260         },
12261 #ifdef CONFIG_NL80211_TESTMODE
12262         {
12263                 .cmd = NL80211_CMD_TESTMODE,
12264                 .doit = nl80211_testmode_do,
12265                 .dumpit = nl80211_testmode_dump,
12266                 .policy = nl80211_policy,
12267                 .flags = GENL_UNS_ADMIN_PERM,
12268                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12269                                   NL80211_FLAG_NEED_RTNL,
12270         },
12271 #endif
12272         {
12273                 .cmd = NL80211_CMD_CONNECT,
12274                 .doit = nl80211_connect,
12275                 .policy = nl80211_policy,
12276                 .flags = GENL_UNS_ADMIN_PERM,
12277                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12278                                   NL80211_FLAG_NEED_RTNL,
12279         },
12280         {
12281                 .cmd = NL80211_CMD_UPDATE_CONNECT_PARAMS,
12282                 .doit = nl80211_update_connect_params,
12283                 .policy = nl80211_policy,
12284                 .flags = GENL_ADMIN_PERM,
12285                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12286                                   NL80211_FLAG_NEED_RTNL,
12287         },
12288         {
12289                 .cmd = NL80211_CMD_DISCONNECT,
12290                 .doit = nl80211_disconnect,
12291                 .policy = nl80211_policy,
12292                 .flags = GENL_UNS_ADMIN_PERM,
12293                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12294                                   NL80211_FLAG_NEED_RTNL,
12295         },
12296         {
12297                 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
12298                 .doit = nl80211_wiphy_netns,
12299                 .policy = nl80211_policy,
12300                 .flags = GENL_UNS_ADMIN_PERM,
12301                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12302                                   NL80211_FLAG_NEED_RTNL,
12303         },
12304         {
12305                 .cmd = NL80211_CMD_GET_SURVEY,
12306                 .policy = nl80211_policy,
12307                 .dumpit = nl80211_dump_survey,
12308         },
12309         {
12310                 .cmd = NL80211_CMD_SET_PMKSA,
12311                 .doit = nl80211_setdel_pmksa,
12312                 .policy = nl80211_policy,
12313                 .flags = GENL_UNS_ADMIN_PERM,
12314                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12315                                   NL80211_FLAG_NEED_RTNL,
12316         },
12317         {
12318                 .cmd = NL80211_CMD_DEL_PMKSA,
12319                 .doit = nl80211_setdel_pmksa,
12320                 .policy = nl80211_policy,
12321                 .flags = GENL_UNS_ADMIN_PERM,
12322                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12323                                   NL80211_FLAG_NEED_RTNL,
12324         },
12325         {
12326                 .cmd = NL80211_CMD_FLUSH_PMKSA,
12327                 .doit = nl80211_flush_pmksa,
12328                 .policy = nl80211_policy,
12329                 .flags = GENL_UNS_ADMIN_PERM,
12330                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12331                                   NL80211_FLAG_NEED_RTNL,
12332         },
12333         {
12334                 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
12335                 .doit = nl80211_remain_on_channel,
12336                 .policy = nl80211_policy,
12337                 .flags = GENL_UNS_ADMIN_PERM,
12338                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12339                                   NL80211_FLAG_NEED_RTNL,
12340         },
12341         {
12342                 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
12343                 .doit = nl80211_cancel_remain_on_channel,
12344                 .policy = nl80211_policy,
12345                 .flags = GENL_UNS_ADMIN_PERM,
12346                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12347                                   NL80211_FLAG_NEED_RTNL,
12348         },
12349         {
12350                 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
12351                 .doit = nl80211_set_tx_bitrate_mask,
12352                 .policy = nl80211_policy,
12353                 .flags = GENL_UNS_ADMIN_PERM,
12354                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12355                                   NL80211_FLAG_NEED_RTNL,
12356         },
12357         {
12358                 .cmd = NL80211_CMD_REGISTER_FRAME,
12359                 .doit = nl80211_register_mgmt,
12360                 .policy = nl80211_policy,
12361                 .flags = GENL_UNS_ADMIN_PERM,
12362                 .internal_flags = NL80211_FLAG_NEED_WDEV |
12363                                   NL80211_FLAG_NEED_RTNL,
12364         },
12365         {
12366                 .cmd = NL80211_CMD_FRAME,
12367                 .doit = nl80211_tx_mgmt,
12368                 .policy = nl80211_policy,
12369                 .flags = GENL_UNS_ADMIN_PERM,
12370                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12371                                   NL80211_FLAG_NEED_RTNL,
12372         },
12373         {
12374                 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
12375                 .doit = nl80211_tx_mgmt_cancel_wait,
12376                 .policy = nl80211_policy,
12377                 .flags = GENL_UNS_ADMIN_PERM,
12378                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12379                                   NL80211_FLAG_NEED_RTNL,
12380         },
12381         {
12382                 .cmd = NL80211_CMD_SET_POWER_SAVE,
12383                 .doit = nl80211_set_power_save,
12384                 .policy = nl80211_policy,
12385                 .flags = GENL_UNS_ADMIN_PERM,
12386                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12387                                   NL80211_FLAG_NEED_RTNL,
12388         },
12389         {
12390                 .cmd = NL80211_CMD_GET_POWER_SAVE,
12391                 .doit = nl80211_get_power_save,
12392                 .policy = nl80211_policy,
12393                 /* can be retrieved by unprivileged users */
12394                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12395                                   NL80211_FLAG_NEED_RTNL,
12396         },
12397         {
12398                 .cmd = NL80211_CMD_SET_CQM,
12399                 .doit = nl80211_set_cqm,
12400                 .policy = nl80211_policy,
12401                 .flags = GENL_UNS_ADMIN_PERM,
12402                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12403                                   NL80211_FLAG_NEED_RTNL,
12404         },
12405         {
12406                 .cmd = NL80211_CMD_SET_CHANNEL,
12407                 .doit = nl80211_set_channel,
12408                 .policy = nl80211_policy,
12409                 .flags = GENL_UNS_ADMIN_PERM,
12410                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12411                                   NL80211_FLAG_NEED_RTNL,
12412         },
12413         {
12414                 .cmd = NL80211_CMD_SET_WDS_PEER,
12415                 .doit = nl80211_set_wds_peer,
12416                 .policy = nl80211_policy,
12417                 .flags = GENL_UNS_ADMIN_PERM,
12418                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12419                                   NL80211_FLAG_NEED_RTNL,
12420         },
12421         {
12422                 .cmd = NL80211_CMD_JOIN_MESH,
12423                 .doit = nl80211_join_mesh,
12424                 .policy = nl80211_policy,
12425                 .flags = GENL_UNS_ADMIN_PERM,
12426                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12427                                   NL80211_FLAG_NEED_RTNL,
12428         },
12429         {
12430                 .cmd = NL80211_CMD_LEAVE_MESH,
12431                 .doit = nl80211_leave_mesh,
12432                 .policy = nl80211_policy,
12433                 .flags = GENL_UNS_ADMIN_PERM,
12434                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12435                                   NL80211_FLAG_NEED_RTNL,
12436         },
12437         {
12438                 .cmd = NL80211_CMD_JOIN_OCB,
12439                 .doit = nl80211_join_ocb,
12440                 .policy = nl80211_policy,
12441                 .flags = GENL_UNS_ADMIN_PERM,
12442                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12443                                   NL80211_FLAG_NEED_RTNL,
12444         },
12445         {
12446                 .cmd = NL80211_CMD_LEAVE_OCB,
12447                 .doit = nl80211_leave_ocb,
12448                 .policy = nl80211_policy,
12449                 .flags = GENL_UNS_ADMIN_PERM,
12450                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12451                                   NL80211_FLAG_NEED_RTNL,
12452         },
12453 #ifdef CONFIG_PM
12454         {
12455                 .cmd = NL80211_CMD_GET_WOWLAN,
12456                 .doit = nl80211_get_wowlan,
12457                 .policy = nl80211_policy,
12458                 /* can be retrieved by unprivileged users */
12459                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12460                                   NL80211_FLAG_NEED_RTNL,
12461         },
12462         {
12463                 .cmd = NL80211_CMD_SET_WOWLAN,
12464                 .doit = nl80211_set_wowlan,
12465                 .policy = nl80211_policy,
12466                 .flags = GENL_UNS_ADMIN_PERM,
12467                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12468                                   NL80211_FLAG_NEED_RTNL,
12469         },
12470 #endif
12471         {
12472                 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
12473                 .doit = nl80211_set_rekey_data,
12474                 .policy = nl80211_policy,
12475                 .flags = GENL_UNS_ADMIN_PERM,
12476                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12477                                   NL80211_FLAG_NEED_RTNL |
12478                                   NL80211_FLAG_CLEAR_SKB,
12479         },
12480         {
12481                 .cmd = NL80211_CMD_TDLS_MGMT,
12482                 .doit = nl80211_tdls_mgmt,
12483                 .policy = nl80211_policy,
12484                 .flags = GENL_UNS_ADMIN_PERM,
12485                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12486                                   NL80211_FLAG_NEED_RTNL,
12487         },
12488         {
12489                 .cmd = NL80211_CMD_TDLS_OPER,
12490                 .doit = nl80211_tdls_oper,
12491                 .policy = nl80211_policy,
12492                 .flags = GENL_UNS_ADMIN_PERM,
12493                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12494                                   NL80211_FLAG_NEED_RTNL,
12495         },
12496         {
12497                 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
12498                 .doit = nl80211_register_unexpected_frame,
12499                 .policy = nl80211_policy,
12500                 .flags = GENL_UNS_ADMIN_PERM,
12501                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12502                                   NL80211_FLAG_NEED_RTNL,
12503         },
12504         {
12505                 .cmd = NL80211_CMD_PROBE_CLIENT,
12506                 .doit = nl80211_probe_client,
12507                 .policy = nl80211_policy,
12508                 .flags = GENL_UNS_ADMIN_PERM,
12509                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12510                                   NL80211_FLAG_NEED_RTNL,
12511         },
12512         {
12513                 .cmd = NL80211_CMD_REGISTER_BEACONS,
12514                 .doit = nl80211_register_beacons,
12515                 .policy = nl80211_policy,
12516                 .flags = GENL_UNS_ADMIN_PERM,
12517                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12518                                   NL80211_FLAG_NEED_RTNL,
12519         },
12520         {
12521                 .cmd = NL80211_CMD_SET_NOACK_MAP,
12522                 .doit = nl80211_set_noack_map,
12523                 .policy = nl80211_policy,
12524                 .flags = GENL_UNS_ADMIN_PERM,
12525                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12526                                   NL80211_FLAG_NEED_RTNL,
12527         },
12528         {
12529                 .cmd = NL80211_CMD_START_P2P_DEVICE,
12530                 .doit = nl80211_start_p2p_device,
12531                 .policy = nl80211_policy,
12532                 .flags = GENL_UNS_ADMIN_PERM,
12533                 .internal_flags = NL80211_FLAG_NEED_WDEV |
12534                                   NL80211_FLAG_NEED_RTNL,
12535         },
12536         {
12537                 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
12538                 .doit = nl80211_stop_p2p_device,
12539                 .policy = nl80211_policy,
12540                 .flags = GENL_UNS_ADMIN_PERM,
12541                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12542                                   NL80211_FLAG_NEED_RTNL,
12543         },
12544         {
12545                 .cmd = NL80211_CMD_START_NAN,
12546                 .doit = nl80211_start_nan,
12547                 .policy = nl80211_policy,
12548                 .flags = GENL_ADMIN_PERM,
12549                 .internal_flags = NL80211_FLAG_NEED_WDEV |
12550                                   NL80211_FLAG_NEED_RTNL,
12551         },
12552         {
12553                 .cmd = NL80211_CMD_STOP_NAN,
12554                 .doit = nl80211_stop_nan,
12555                 .policy = nl80211_policy,
12556                 .flags = GENL_ADMIN_PERM,
12557                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12558                                   NL80211_FLAG_NEED_RTNL,
12559         },
12560         {
12561                 .cmd = NL80211_CMD_ADD_NAN_FUNCTION,
12562                 .doit = nl80211_nan_add_func,
12563                 .policy = nl80211_policy,
12564                 .flags = GENL_ADMIN_PERM,
12565                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12566                                   NL80211_FLAG_NEED_RTNL,
12567         },
12568         {
12569                 .cmd = NL80211_CMD_DEL_NAN_FUNCTION,
12570                 .doit = nl80211_nan_del_func,
12571                 .policy = nl80211_policy,
12572                 .flags = GENL_ADMIN_PERM,
12573                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12574                                   NL80211_FLAG_NEED_RTNL,
12575         },
12576         {
12577                 .cmd = NL80211_CMD_CHANGE_NAN_CONFIG,
12578                 .doit = nl80211_nan_change_config,
12579                 .policy = nl80211_policy,
12580                 .flags = GENL_ADMIN_PERM,
12581                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12582                                   NL80211_FLAG_NEED_RTNL,
12583         },
12584         {
12585                 .cmd = NL80211_CMD_SET_MCAST_RATE,
12586                 .doit = nl80211_set_mcast_rate,
12587                 .policy = nl80211_policy,
12588                 .flags = GENL_UNS_ADMIN_PERM,
12589                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12590                                   NL80211_FLAG_NEED_RTNL,
12591         },
12592         {
12593                 .cmd = NL80211_CMD_SET_MAC_ACL,
12594                 .doit = nl80211_set_mac_acl,
12595                 .policy = nl80211_policy,
12596                 .flags = GENL_UNS_ADMIN_PERM,
12597                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12598                                   NL80211_FLAG_NEED_RTNL,
12599         },
12600         {
12601                 .cmd = NL80211_CMD_RADAR_DETECT,
12602                 .doit = nl80211_start_radar_detection,
12603                 .policy = nl80211_policy,
12604                 .flags = GENL_UNS_ADMIN_PERM,
12605                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12606                                   NL80211_FLAG_NEED_RTNL,
12607         },
12608         {
12609                 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
12610                 .doit = nl80211_get_protocol_features,
12611                 .policy = nl80211_policy,
12612         },
12613         {
12614                 .cmd = NL80211_CMD_UPDATE_FT_IES,
12615                 .doit = nl80211_update_ft_ies,
12616                 .policy = nl80211_policy,
12617                 .flags = GENL_UNS_ADMIN_PERM,
12618                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12619                                   NL80211_FLAG_NEED_RTNL,
12620         },
12621         {
12622                 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
12623                 .doit = nl80211_crit_protocol_start,
12624                 .policy = nl80211_policy,
12625                 .flags = GENL_UNS_ADMIN_PERM,
12626                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12627                                   NL80211_FLAG_NEED_RTNL,
12628         },
12629         {
12630                 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
12631                 .doit = nl80211_crit_protocol_stop,
12632                 .policy = nl80211_policy,
12633                 .flags = GENL_UNS_ADMIN_PERM,
12634                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12635                                   NL80211_FLAG_NEED_RTNL,
12636         },
12637         {
12638                 .cmd = NL80211_CMD_GET_COALESCE,
12639                 .doit = nl80211_get_coalesce,
12640                 .policy = nl80211_policy,
12641                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12642                                   NL80211_FLAG_NEED_RTNL,
12643         },
12644         {
12645                 .cmd = NL80211_CMD_SET_COALESCE,
12646                 .doit = nl80211_set_coalesce,
12647                 .policy = nl80211_policy,
12648                 .flags = GENL_UNS_ADMIN_PERM,
12649                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12650                                   NL80211_FLAG_NEED_RTNL,
12651         },
12652         {
12653                 .cmd = NL80211_CMD_CHANNEL_SWITCH,
12654                 .doit = nl80211_channel_switch,
12655                 .policy = nl80211_policy,
12656                 .flags = GENL_UNS_ADMIN_PERM,
12657                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12658                                   NL80211_FLAG_NEED_RTNL,
12659         },
12660         {
12661                 .cmd = NL80211_CMD_VENDOR,
12662                 .doit = nl80211_vendor_cmd,
12663                 .dumpit = nl80211_vendor_cmd_dump,
12664                 .policy = nl80211_policy,
12665                 .flags = GENL_UNS_ADMIN_PERM,
12666                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12667                                   NL80211_FLAG_NEED_RTNL,
12668         },
12669         {
12670                 .cmd = NL80211_CMD_SET_QOS_MAP,
12671                 .doit = nl80211_set_qos_map,
12672                 .policy = nl80211_policy,
12673                 .flags = GENL_UNS_ADMIN_PERM,
12674                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12675                                   NL80211_FLAG_NEED_RTNL,
12676         },
12677         {
12678                 .cmd = NL80211_CMD_ADD_TX_TS,
12679                 .doit = nl80211_add_tx_ts,
12680                 .policy = nl80211_policy,
12681                 .flags = GENL_UNS_ADMIN_PERM,
12682                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12683                                   NL80211_FLAG_NEED_RTNL,
12684         },
12685         {
12686                 .cmd = NL80211_CMD_DEL_TX_TS,
12687                 .doit = nl80211_del_tx_ts,
12688                 .policy = nl80211_policy,
12689                 .flags = GENL_UNS_ADMIN_PERM,
12690                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12691                                   NL80211_FLAG_NEED_RTNL,
12692         },
12693         {
12694                 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
12695                 .doit = nl80211_tdls_channel_switch,
12696                 .policy = nl80211_policy,
12697                 .flags = GENL_UNS_ADMIN_PERM,
12698                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12699                                   NL80211_FLAG_NEED_RTNL,
12700         },
12701         {
12702                 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
12703                 .doit = nl80211_tdls_cancel_channel_switch,
12704                 .policy = nl80211_policy,
12705                 .flags = GENL_UNS_ADMIN_PERM,
12706                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12707                                   NL80211_FLAG_NEED_RTNL,
12708         },
12709         {
12710                 .cmd = NL80211_CMD_SET_MULTICAST_TO_UNICAST,
12711                 .doit = nl80211_set_multicast_to_unicast,
12712                 .policy = nl80211_policy,
12713                 .flags = GENL_UNS_ADMIN_PERM,
12714                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12715                                   NL80211_FLAG_NEED_RTNL,
12716         },
12717 };
12718
12719 static struct genl_family nl80211_fam __ro_after_init = {
12720         .name = NL80211_GENL_NAME,      /* have users key off the name instead */
12721         .hdrsize = 0,                   /* no private header */
12722         .version = 1,                   /* no particular meaning now */
12723         .maxattr = NL80211_ATTR_MAX,
12724         .netnsok = true,
12725         .pre_doit = nl80211_pre_doit,
12726         .post_doit = nl80211_post_doit,
12727         .module = THIS_MODULE,
12728         .ops = nl80211_ops,
12729         .n_ops = ARRAY_SIZE(nl80211_ops),
12730         .mcgrps = nl80211_mcgrps,
12731         .n_mcgrps = ARRAY_SIZE(nl80211_mcgrps),
12732 };
12733
12734 /* notification functions */
12735
12736 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
12737                           enum nl80211_commands cmd)
12738 {
12739         struct sk_buff *msg;
12740         struct nl80211_dump_wiphy_state state = {};
12741
12742         WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
12743                 cmd != NL80211_CMD_DEL_WIPHY);
12744
12745         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12746         if (!msg)
12747                 return;
12748
12749         if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
12750                 nlmsg_free(msg);
12751                 return;
12752         }
12753
12754         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12755                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
12756 }
12757
12758 void nl80211_notify_iface(struct cfg80211_registered_device *rdev,
12759                                 struct wireless_dev *wdev,
12760                                 enum nl80211_commands cmd)
12761 {
12762         struct sk_buff *msg;
12763
12764         WARN_ON(cmd != NL80211_CMD_NEW_INTERFACE &&
12765                 cmd != NL80211_CMD_DEL_INTERFACE);
12766
12767         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12768         if (!msg)
12769                 return;
12770
12771         if (nl80211_send_iface(msg, 0, 0, 0, rdev, wdev,
12772                                cmd == NL80211_CMD_DEL_INTERFACE) < 0) {
12773                 nlmsg_free(msg);
12774                 return;
12775         }
12776
12777         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12778                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
12779 }
12780
12781 static int nl80211_add_scan_req(struct sk_buff *msg,
12782                                 struct cfg80211_registered_device *rdev)
12783 {
12784         struct cfg80211_scan_request *req = rdev->scan_req;
12785         struct nlattr *nest;
12786         int i;
12787
12788         if (WARN_ON(!req))
12789                 return 0;
12790
12791         nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
12792         if (!nest)
12793                 goto nla_put_failure;
12794         for (i = 0; i < req->n_ssids; i++) {
12795                 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
12796                         goto nla_put_failure;
12797         }
12798         nla_nest_end(msg, nest);
12799
12800         nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
12801         if (!nest)
12802                 goto nla_put_failure;
12803         for (i = 0; i < req->n_channels; i++) {
12804                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
12805                         goto nla_put_failure;
12806         }
12807         nla_nest_end(msg, nest);
12808
12809         if (req->ie &&
12810             nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
12811                 goto nla_put_failure;
12812
12813         if (req->flags &&
12814             nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
12815                 goto nla_put_failure;
12816
12817         if (req->info.scan_start_tsf &&
12818             (nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF,
12819                                req->info.scan_start_tsf, NL80211_BSS_PAD) ||
12820              nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN,
12821                      req->info.tsf_bssid)))
12822                 goto nla_put_failure;
12823
12824         return 0;
12825  nla_put_failure:
12826         return -ENOBUFS;
12827 }
12828
12829 static int nl80211_send_scan_msg(struct sk_buff *msg,
12830                                  struct cfg80211_registered_device *rdev,
12831                                  struct wireless_dev *wdev,
12832                                  u32 portid, u32 seq, int flags,
12833                                  u32 cmd)
12834 {
12835         void *hdr;
12836
12837         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
12838         if (!hdr)
12839                 return -1;
12840
12841         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12842             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12843                                          wdev->netdev->ifindex)) ||
12844             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
12845                               NL80211_ATTR_PAD))
12846                 goto nla_put_failure;
12847
12848         /* ignore errors and send incomplete event anyway */
12849         nl80211_add_scan_req(msg, rdev);
12850
12851         genlmsg_end(msg, hdr);
12852         return 0;
12853
12854  nla_put_failure:
12855         genlmsg_cancel(msg, hdr);
12856         return -EMSGSIZE;
12857 }
12858
12859 static int
12860 nl80211_send_sched_scan_msg(struct sk_buff *msg,
12861                             struct cfg80211_registered_device *rdev,
12862                             struct net_device *netdev,
12863                             u32 portid, u32 seq, int flags, u32 cmd)
12864 {
12865         void *hdr;
12866
12867         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
12868         if (!hdr)
12869                 return -1;
12870
12871         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12872             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
12873                 goto nla_put_failure;
12874
12875         genlmsg_end(msg, hdr);
12876         return 0;
12877
12878  nla_put_failure:
12879         genlmsg_cancel(msg, hdr);
12880         return -EMSGSIZE;
12881 }
12882
12883 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
12884                              struct wireless_dev *wdev)
12885 {
12886         struct sk_buff *msg;
12887
12888         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12889         if (!msg)
12890                 return;
12891
12892         if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
12893                                   NL80211_CMD_TRIGGER_SCAN) < 0) {
12894                 nlmsg_free(msg);
12895                 return;
12896         }
12897
12898         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12899                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
12900 }
12901
12902 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
12903                                        struct wireless_dev *wdev, bool aborted)
12904 {
12905         struct sk_buff *msg;
12906
12907         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12908         if (!msg)
12909                 return NULL;
12910
12911         if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
12912                                   aborted ? NL80211_CMD_SCAN_ABORTED :
12913                                             NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
12914                 nlmsg_free(msg);
12915                 return NULL;
12916         }
12917
12918         return msg;
12919 }
12920
12921 void nl80211_send_scan_result(struct cfg80211_registered_device *rdev,
12922                               struct sk_buff *msg)
12923 {
12924         if (!msg)
12925                 return;
12926
12927         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12928                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
12929 }
12930
12931 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
12932                                      struct net_device *netdev)
12933 {
12934         struct sk_buff *msg;
12935
12936         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12937         if (!msg)
12938                 return;
12939
12940         if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
12941                                         NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
12942                 nlmsg_free(msg);
12943                 return;
12944         }
12945
12946         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12947                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
12948 }
12949
12950 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
12951                              struct net_device *netdev, u32 cmd)
12952 {
12953         struct sk_buff *msg;
12954
12955         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12956         if (!msg)
12957                 return;
12958
12959         if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
12960                 nlmsg_free(msg);
12961                 return;
12962         }
12963
12964         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12965                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
12966 }
12967
12968 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
12969                                           struct regulatory_request *request)
12970 {
12971         /* Userspace can always count this one always being set */
12972         if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
12973                 goto nla_put_failure;
12974
12975         if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
12976                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
12977                                NL80211_REGDOM_TYPE_WORLD))
12978                         goto nla_put_failure;
12979         } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
12980                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
12981                                NL80211_REGDOM_TYPE_CUSTOM_WORLD))
12982                         goto nla_put_failure;
12983         } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
12984                    request->intersect) {
12985                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
12986                                NL80211_REGDOM_TYPE_INTERSECTION))
12987                         goto nla_put_failure;
12988         } else {
12989                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
12990                                NL80211_REGDOM_TYPE_COUNTRY) ||
12991                     nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
12992                                    request->alpha2))
12993                         goto nla_put_failure;
12994         }
12995
12996         if (request->wiphy_idx != WIPHY_IDX_INVALID) {
12997                 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
12998
12999                 if (wiphy &&
13000                     nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
13001                         goto nla_put_failure;
13002
13003                 if (wiphy &&
13004                     wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
13005                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
13006                         goto nla_put_failure;
13007         }
13008
13009         return true;
13010
13011 nla_put_failure:
13012         return false;
13013 }
13014
13015 /*
13016  * This can happen on global regulatory changes or device specific settings
13017  * based on custom regulatory domains.
13018  */
13019 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
13020                                      struct regulatory_request *request)
13021 {
13022         struct sk_buff *msg;
13023         void *hdr;
13024
13025         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13026         if (!msg)
13027                 return;
13028
13029         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
13030         if (!hdr) {
13031                 nlmsg_free(msg);
13032                 return;
13033         }
13034
13035         if (nl80211_reg_change_event_fill(msg, request) == false)
13036                 goto nla_put_failure;
13037
13038         genlmsg_end(msg, hdr);
13039
13040         rcu_read_lock();
13041         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
13042                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
13043         rcu_read_unlock();
13044
13045         return;
13046
13047 nla_put_failure:
13048         genlmsg_cancel(msg, hdr);
13049         nlmsg_free(msg);
13050 }
13051
13052 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
13053                                     struct net_device *netdev,
13054                                     const u8 *buf, size_t len,
13055                                     enum nl80211_commands cmd, gfp_t gfp,
13056                                     int uapsd_queues)
13057 {
13058         struct sk_buff *msg;
13059         void *hdr;
13060
13061         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13062         if (!msg)
13063                 return;
13064
13065         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
13066         if (!hdr) {
13067                 nlmsg_free(msg);
13068                 return;
13069         }
13070
13071         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13072             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13073             nla_put(msg, NL80211_ATTR_FRAME, len, buf))
13074                 goto nla_put_failure;
13075
13076         if (uapsd_queues >= 0) {
13077                 struct nlattr *nla_wmm =
13078                         nla_nest_start(msg, NL80211_ATTR_STA_WME);
13079                 if (!nla_wmm)
13080                         goto nla_put_failure;
13081
13082                 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
13083                                uapsd_queues))
13084                         goto nla_put_failure;
13085
13086                 nla_nest_end(msg, nla_wmm);
13087         }
13088
13089         genlmsg_end(msg, hdr);
13090
13091         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13092                                 NL80211_MCGRP_MLME, gfp);
13093         return;
13094
13095  nla_put_failure:
13096         genlmsg_cancel(msg, hdr);
13097         nlmsg_free(msg);
13098 }
13099
13100 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
13101                           struct net_device *netdev, const u8 *buf,
13102                           size_t len, gfp_t gfp)
13103 {
13104         nl80211_send_mlme_event(rdev, netdev, buf, len,
13105                                 NL80211_CMD_AUTHENTICATE, gfp, -1);
13106 }
13107
13108 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
13109                            struct net_device *netdev, const u8 *buf,
13110                            size_t len, gfp_t gfp, int uapsd_queues)
13111 {
13112         nl80211_send_mlme_event(rdev, netdev, buf, len,
13113                                 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues);
13114 }
13115
13116 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
13117                          struct net_device *netdev, const u8 *buf,
13118                          size_t len, gfp_t gfp)
13119 {
13120         nl80211_send_mlme_event(rdev, netdev, buf, len,
13121                                 NL80211_CMD_DEAUTHENTICATE, gfp, -1);
13122 }
13123
13124 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
13125                            struct net_device *netdev, const u8 *buf,
13126                            size_t len, gfp_t gfp)
13127 {
13128         nl80211_send_mlme_event(rdev, netdev, buf, len,
13129                                 NL80211_CMD_DISASSOCIATE, gfp, -1);
13130 }
13131
13132 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
13133                                   size_t len)
13134 {
13135         struct wireless_dev *wdev = dev->ieee80211_ptr;
13136         struct wiphy *wiphy = wdev->wiphy;
13137         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13138         const struct ieee80211_mgmt *mgmt = (void *)buf;
13139         u32 cmd;
13140
13141         if (WARN_ON(len < 2))
13142                 return;
13143
13144         if (ieee80211_is_deauth(mgmt->frame_control))
13145                 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
13146         else
13147                 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
13148
13149         trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
13150         nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1);
13151 }
13152 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
13153
13154 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
13155                                       struct net_device *netdev, int cmd,
13156                                       const u8 *addr, gfp_t gfp)
13157 {
13158         struct sk_buff *msg;
13159         void *hdr;
13160
13161         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13162         if (!msg)
13163                 return;
13164
13165         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
13166         if (!hdr) {
13167                 nlmsg_free(msg);
13168                 return;
13169         }
13170
13171         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13172             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13173             nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
13174             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
13175                 goto nla_put_failure;
13176
13177         genlmsg_end(msg, hdr);
13178
13179         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13180                                 NL80211_MCGRP_MLME, gfp);
13181         return;
13182
13183  nla_put_failure:
13184         genlmsg_cancel(msg, hdr);
13185         nlmsg_free(msg);
13186 }
13187
13188 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
13189                                struct net_device *netdev, const u8 *addr,
13190                                gfp_t gfp)
13191 {
13192         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
13193                                   addr, gfp);
13194 }
13195
13196 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
13197                                 struct net_device *netdev, const u8 *addr,
13198                                 gfp_t gfp)
13199 {
13200         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
13201                                   addr, gfp);
13202 }
13203
13204 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
13205                                  struct net_device *netdev, const u8 *bssid,
13206                                  const u8 *req_ie, size_t req_ie_len,
13207                                  const u8 *resp_ie, size_t resp_ie_len,
13208                                  int status, gfp_t gfp)
13209 {
13210         struct sk_buff *msg;
13211         void *hdr;
13212
13213         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13214         if (!msg)
13215                 return;
13216
13217         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
13218         if (!hdr) {
13219                 nlmsg_free(msg);
13220                 return;
13221         }
13222
13223         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13224             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13225             (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) ||
13226             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
13227                         status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE :
13228                         status) ||
13229             (status < 0 && nla_put_flag(msg, NL80211_ATTR_TIMED_OUT)) ||
13230             (req_ie &&
13231              nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
13232             (resp_ie &&
13233              nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
13234                 goto nla_put_failure;
13235
13236         genlmsg_end(msg, hdr);
13237
13238         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13239                                 NL80211_MCGRP_MLME, gfp);
13240         return;
13241
13242  nla_put_failure:
13243         genlmsg_cancel(msg, hdr);
13244         nlmsg_free(msg);
13245 }
13246
13247 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
13248                          struct net_device *netdev, const u8 *bssid,
13249                          const u8 *req_ie, size_t req_ie_len,
13250                          const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
13251 {
13252         struct sk_buff *msg;
13253         void *hdr;
13254
13255         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13256         if (!msg)
13257                 return;
13258
13259         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
13260         if (!hdr) {
13261                 nlmsg_free(msg);
13262                 return;
13263         }
13264
13265         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13266             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13267             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
13268             (req_ie &&
13269              nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
13270             (resp_ie &&
13271              nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
13272                 goto nla_put_failure;
13273
13274         genlmsg_end(msg, hdr);
13275
13276         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13277                                 NL80211_MCGRP_MLME, gfp);
13278         return;
13279
13280  nla_put_failure:
13281         genlmsg_cancel(msg, hdr);
13282         nlmsg_free(msg);
13283 }
13284
13285 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
13286                                struct net_device *netdev, u16 reason,
13287                                const u8 *ie, size_t ie_len, bool from_ap)
13288 {
13289         struct sk_buff *msg;
13290         void *hdr;
13291
13292         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13293         if (!msg)
13294                 return;
13295
13296         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
13297         if (!hdr) {
13298                 nlmsg_free(msg);
13299                 return;
13300         }
13301
13302         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13303             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13304             (from_ap && reason &&
13305              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
13306             (from_ap &&
13307              nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
13308             (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
13309                 goto nla_put_failure;
13310
13311         genlmsg_end(msg, hdr);
13312
13313         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13314                                 NL80211_MCGRP_MLME, GFP_KERNEL);
13315         return;
13316
13317  nla_put_failure:
13318         genlmsg_cancel(msg, hdr);
13319         nlmsg_free(msg);
13320 }
13321
13322 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
13323                              struct net_device *netdev, const u8 *bssid,
13324                              gfp_t gfp)
13325 {
13326         struct sk_buff *msg;
13327         void *hdr;
13328
13329         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13330         if (!msg)
13331                 return;
13332
13333         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
13334         if (!hdr) {
13335                 nlmsg_free(msg);
13336                 return;
13337         }
13338
13339         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13340             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13341             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
13342                 goto nla_put_failure;
13343
13344         genlmsg_end(msg, hdr);
13345
13346         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13347                                 NL80211_MCGRP_MLME, gfp);
13348         return;
13349
13350  nla_put_failure:
13351         genlmsg_cancel(msg, hdr);
13352         nlmsg_free(msg);
13353 }
13354
13355 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
13356                                         const u8* ie, u8 ie_len, gfp_t gfp)
13357 {
13358         struct wireless_dev *wdev = dev->ieee80211_ptr;
13359         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
13360         struct sk_buff *msg;
13361         void *hdr;
13362
13363         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
13364                 return;
13365
13366         trace_cfg80211_notify_new_peer_candidate(dev, addr);
13367
13368         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13369         if (!msg)
13370                 return;
13371
13372         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
13373         if (!hdr) {
13374                 nlmsg_free(msg);
13375                 return;
13376         }
13377
13378         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13379             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
13380             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
13381             (ie_len && ie &&
13382              nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
13383                 goto nla_put_failure;
13384
13385         genlmsg_end(msg, hdr);
13386
13387         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13388                                 NL80211_MCGRP_MLME, gfp);
13389         return;
13390
13391  nla_put_failure:
13392         genlmsg_cancel(msg, hdr);
13393         nlmsg_free(msg);
13394 }
13395 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
13396
13397 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
13398                                  struct net_device *netdev, const u8 *addr,
13399                                  enum nl80211_key_type key_type, int key_id,
13400                                  const u8 *tsc, gfp_t gfp)
13401 {
13402         struct sk_buff *msg;
13403         void *hdr;
13404
13405         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13406         if (!msg)
13407                 return;
13408
13409         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
13410         if (!hdr) {
13411                 nlmsg_free(msg);
13412                 return;
13413         }
13414
13415         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13416             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13417             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
13418             nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
13419             (key_id != -1 &&
13420              nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
13421             (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
13422                 goto nla_put_failure;
13423
13424         genlmsg_end(msg, hdr);
13425
13426         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13427                                 NL80211_MCGRP_MLME, gfp);
13428         return;
13429
13430  nla_put_failure:
13431         genlmsg_cancel(msg, hdr);
13432         nlmsg_free(msg);
13433 }
13434
13435 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
13436                                     struct ieee80211_channel *channel_before,
13437                                     struct ieee80211_channel *channel_after)
13438 {
13439         struct sk_buff *msg;
13440         void *hdr;
13441         struct nlattr *nl_freq;
13442
13443         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
13444         if (!msg)
13445                 return;
13446
13447         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
13448         if (!hdr) {
13449                 nlmsg_free(msg);
13450                 return;
13451         }
13452
13453         /*
13454          * Since we are applying the beacon hint to a wiphy we know its
13455          * wiphy_idx is valid
13456          */
13457         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
13458                 goto nla_put_failure;
13459
13460         /* Before */
13461         nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
13462         if (!nl_freq)
13463                 goto nla_put_failure;
13464         if (nl80211_msg_put_channel(msg, channel_before, false))
13465                 goto nla_put_failure;
13466         nla_nest_end(msg, nl_freq);
13467
13468         /* After */
13469         nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
13470         if (!nl_freq)
13471                 goto nla_put_failure;
13472         if (nl80211_msg_put_channel(msg, channel_after, false))
13473                 goto nla_put_failure;
13474         nla_nest_end(msg, nl_freq);
13475
13476         genlmsg_end(msg, hdr);
13477
13478         rcu_read_lock();
13479         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
13480                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
13481         rcu_read_unlock();
13482
13483         return;
13484
13485 nla_put_failure:
13486         genlmsg_cancel(msg, hdr);
13487         nlmsg_free(msg);
13488 }
13489
13490 static void nl80211_send_remain_on_chan_event(
13491         int cmd, struct cfg80211_registered_device *rdev,
13492         struct wireless_dev *wdev, u64 cookie,
13493         struct ieee80211_channel *chan,
13494         unsigned int duration, gfp_t gfp)
13495 {
13496         struct sk_buff *msg;
13497         void *hdr;
13498
13499         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13500         if (!msg)
13501                 return;
13502
13503         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
13504         if (!hdr) {
13505                 nlmsg_free(msg);
13506                 return;
13507         }
13508
13509         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13510             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
13511                                          wdev->netdev->ifindex)) ||
13512             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13513                               NL80211_ATTR_PAD) ||
13514             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
13515             nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
13516                         NL80211_CHAN_NO_HT) ||
13517             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
13518                               NL80211_ATTR_PAD))
13519                 goto nla_put_failure;
13520
13521         if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
13522             nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
13523                 goto nla_put_failure;
13524
13525         genlmsg_end(msg, hdr);
13526
13527         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13528                                 NL80211_MCGRP_MLME, gfp);
13529         return;
13530
13531  nla_put_failure:
13532         genlmsg_cancel(msg, hdr);
13533         nlmsg_free(msg);
13534 }
13535
13536 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
13537                                struct ieee80211_channel *chan,
13538                                unsigned int duration, gfp_t gfp)
13539 {
13540         struct wiphy *wiphy = wdev->wiphy;
13541         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13542
13543         trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
13544         nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
13545                                           rdev, wdev, cookie, chan,
13546                                           duration, gfp);
13547 }
13548 EXPORT_SYMBOL(cfg80211_ready_on_channel);
13549
13550 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
13551                                         struct ieee80211_channel *chan,
13552                                         gfp_t gfp)
13553 {
13554         struct wiphy *wiphy = wdev->wiphy;
13555         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13556
13557         trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
13558         nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
13559                                           rdev, wdev, cookie, chan, 0, gfp);
13560 }
13561 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
13562
13563 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
13564                       struct station_info *sinfo, gfp_t gfp)
13565 {
13566         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
13567         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13568         struct sk_buff *msg;
13569
13570         trace_cfg80211_new_sta(dev, mac_addr, sinfo);
13571
13572         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13573         if (!msg)
13574                 return;
13575
13576         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
13577                                  rdev, dev, mac_addr, sinfo) < 0) {
13578                 nlmsg_free(msg);
13579                 return;
13580         }
13581
13582         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13583                                 NL80211_MCGRP_MLME, gfp);
13584 }
13585 EXPORT_SYMBOL(cfg80211_new_sta);
13586
13587 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
13588                             struct station_info *sinfo, gfp_t gfp)
13589 {
13590         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
13591         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13592         struct sk_buff *msg;
13593         struct station_info empty_sinfo = {};
13594
13595         if (!sinfo)
13596                 sinfo = &empty_sinfo;
13597
13598         trace_cfg80211_del_sta(dev, mac_addr);
13599
13600         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13601         if (!msg)
13602                 return;
13603
13604         if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
13605                                  rdev, dev, mac_addr, sinfo) < 0) {
13606                 nlmsg_free(msg);
13607                 return;
13608         }
13609
13610         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13611                                 NL80211_MCGRP_MLME, gfp);
13612 }
13613 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
13614
13615 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
13616                           enum nl80211_connect_failed_reason reason,
13617                           gfp_t gfp)
13618 {
13619         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
13620         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13621         struct sk_buff *msg;
13622         void *hdr;
13623
13624         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
13625         if (!msg)
13626                 return;
13627
13628         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
13629         if (!hdr) {
13630                 nlmsg_free(msg);
13631                 return;
13632         }
13633
13634         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
13635             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
13636             nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
13637                 goto nla_put_failure;
13638
13639         genlmsg_end(msg, hdr);
13640
13641         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13642                                 NL80211_MCGRP_MLME, gfp);
13643         return;
13644
13645  nla_put_failure:
13646         genlmsg_cancel(msg, hdr);
13647         nlmsg_free(msg);
13648 }
13649 EXPORT_SYMBOL(cfg80211_conn_failed);
13650
13651 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
13652                                        const u8 *addr, gfp_t gfp)
13653 {
13654         struct wireless_dev *wdev = dev->ieee80211_ptr;
13655         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
13656         struct sk_buff *msg;
13657         void *hdr;
13658         u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid);
13659
13660         if (!nlportid)
13661                 return false;
13662
13663         msg = nlmsg_new(100, gfp);
13664         if (!msg)
13665                 return true;
13666
13667         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
13668         if (!hdr) {
13669                 nlmsg_free(msg);
13670                 return true;
13671         }
13672
13673         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13674             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
13675             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
13676                 goto nla_put_failure;
13677
13678         genlmsg_end(msg, hdr);
13679         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
13680         return true;
13681
13682  nla_put_failure:
13683         genlmsg_cancel(msg, hdr);
13684         nlmsg_free(msg);
13685         return true;
13686 }
13687
13688 bool cfg80211_rx_spurious_frame(struct net_device *dev,
13689                                 const u8 *addr, gfp_t gfp)
13690 {
13691         struct wireless_dev *wdev = dev->ieee80211_ptr;
13692         bool ret;
13693
13694         trace_cfg80211_rx_spurious_frame(dev, addr);
13695
13696         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
13697                     wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
13698                 trace_cfg80211_return_bool(false);
13699                 return false;
13700         }
13701         ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
13702                                          addr, gfp);
13703         trace_cfg80211_return_bool(ret);
13704         return ret;
13705 }
13706 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
13707
13708 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
13709                                         const u8 *addr, gfp_t gfp)
13710 {
13711         struct wireless_dev *wdev = dev->ieee80211_ptr;
13712         bool ret;
13713
13714         trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
13715
13716         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
13717                     wdev->iftype != NL80211_IFTYPE_P2P_GO &&
13718                     wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
13719                 trace_cfg80211_return_bool(false);
13720                 return false;
13721         }
13722         ret = __nl80211_unexpected_frame(dev,
13723                                          NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
13724                                          addr, gfp);
13725         trace_cfg80211_return_bool(ret);
13726         return ret;
13727 }
13728 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
13729
13730 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
13731                       struct wireless_dev *wdev, u32 nlportid,
13732                       int freq, int sig_dbm,
13733                       const u8 *buf, size_t len, u32 flags, gfp_t gfp)
13734 {
13735         struct net_device *netdev = wdev->netdev;
13736         struct sk_buff *msg;
13737         void *hdr;
13738
13739         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13740         if (!msg)
13741                 return -ENOMEM;
13742
13743         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
13744         if (!hdr) {
13745                 nlmsg_free(msg);
13746                 return -ENOMEM;
13747         }
13748
13749         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13750             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
13751                                         netdev->ifindex)) ||
13752             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13753                               NL80211_ATTR_PAD) ||
13754             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
13755             (sig_dbm &&
13756              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
13757             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
13758             (flags &&
13759              nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
13760                 goto nla_put_failure;
13761
13762         genlmsg_end(msg, hdr);
13763
13764         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
13765
13766  nla_put_failure:
13767         genlmsg_cancel(msg, hdr);
13768         nlmsg_free(msg);
13769         return -ENOBUFS;
13770 }
13771
13772 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
13773                              const u8 *buf, size_t len, bool ack, gfp_t gfp)
13774 {
13775         struct wiphy *wiphy = wdev->wiphy;
13776         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13777         struct net_device *netdev = wdev->netdev;
13778         struct sk_buff *msg;
13779         void *hdr;
13780
13781         trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
13782
13783         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13784         if (!msg)
13785                 return;
13786
13787         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
13788         if (!hdr) {
13789                 nlmsg_free(msg);
13790                 return;
13791         }
13792
13793         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13794             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
13795                                    netdev->ifindex)) ||
13796             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13797                               NL80211_ATTR_PAD) ||
13798             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
13799             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
13800                               NL80211_ATTR_PAD) ||
13801             (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
13802                 goto nla_put_failure;
13803
13804         genlmsg_end(msg, hdr);
13805
13806         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13807                                 NL80211_MCGRP_MLME, gfp);
13808         return;
13809
13810  nla_put_failure:
13811         genlmsg_cancel(msg, hdr);
13812         nlmsg_free(msg);
13813 }
13814 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
13815
13816 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
13817                                             const char *mac, gfp_t gfp)
13818 {
13819         struct wireless_dev *wdev = dev->ieee80211_ptr;
13820         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
13821         struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13822         void **cb;
13823
13824         if (!msg)
13825                 return NULL;
13826
13827         cb = (void **)msg->cb;
13828
13829         cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
13830         if (!cb[0]) {
13831                 nlmsg_free(msg);
13832                 return NULL;
13833         }
13834
13835         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13836             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
13837                 goto nla_put_failure;
13838
13839         if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
13840                 goto nla_put_failure;
13841
13842         cb[1] = nla_nest_start(msg, NL80211_ATTR_CQM);
13843         if (!cb[1])
13844                 goto nla_put_failure;
13845
13846         cb[2] = rdev;
13847
13848         return msg;
13849  nla_put_failure:
13850         nlmsg_free(msg);
13851         return NULL;
13852 }
13853
13854 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
13855 {
13856         void **cb = (void **)msg->cb;
13857         struct cfg80211_registered_device *rdev = cb[2];
13858
13859         nla_nest_end(msg, cb[1]);
13860         genlmsg_end(msg, cb[0]);
13861
13862         memset(msg->cb, 0, sizeof(msg->cb));
13863
13864         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13865                                 NL80211_MCGRP_MLME, gfp);
13866 }
13867
13868 void cfg80211_cqm_rssi_notify(struct net_device *dev,
13869                               enum nl80211_cqm_rssi_threshold_event rssi_event,
13870                               gfp_t gfp)
13871 {
13872         struct sk_buff *msg;
13873
13874         trace_cfg80211_cqm_rssi_notify(dev, rssi_event);
13875
13876         if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
13877                     rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
13878                 return;
13879
13880         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
13881         if (!msg)
13882                 return;
13883
13884         if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
13885                         rssi_event))
13886                 goto nla_put_failure;
13887
13888         cfg80211_send_cqm(msg, gfp);
13889
13890         return;
13891
13892  nla_put_failure:
13893         nlmsg_free(msg);
13894 }
13895 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
13896
13897 void cfg80211_cqm_txe_notify(struct net_device *dev,
13898                              const u8 *peer, u32 num_packets,
13899                              u32 rate, u32 intvl, gfp_t gfp)
13900 {
13901         struct sk_buff *msg;
13902
13903         msg = cfg80211_prepare_cqm(dev, peer, gfp);
13904         if (!msg)
13905                 return;
13906
13907         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
13908                 goto nla_put_failure;
13909
13910         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
13911                 goto nla_put_failure;
13912
13913         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
13914                 goto nla_put_failure;
13915
13916         cfg80211_send_cqm(msg, gfp);
13917         return;
13918
13919  nla_put_failure:
13920         nlmsg_free(msg);
13921 }
13922 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
13923
13924 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
13925                                  const u8 *peer, u32 num_packets, gfp_t gfp)
13926 {
13927         struct sk_buff *msg;
13928
13929         trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
13930
13931         msg = cfg80211_prepare_cqm(dev, peer, gfp);
13932         if (!msg)
13933                 return;
13934
13935         if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
13936                 goto nla_put_failure;
13937
13938         cfg80211_send_cqm(msg, gfp);
13939         return;
13940
13941  nla_put_failure:
13942         nlmsg_free(msg);
13943 }
13944 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
13945
13946 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
13947 {
13948         struct sk_buff *msg;
13949
13950         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
13951         if (!msg)
13952                 return;
13953
13954         if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
13955                 goto nla_put_failure;
13956
13957         cfg80211_send_cqm(msg, gfp);
13958         return;
13959
13960  nla_put_failure:
13961         nlmsg_free(msg);
13962 }
13963 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
13964
13965 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
13966                                      struct net_device *netdev, const u8 *bssid,
13967                                      const u8 *replay_ctr, gfp_t gfp)
13968 {
13969         struct sk_buff *msg;
13970         struct nlattr *rekey_attr;
13971         void *hdr;
13972
13973         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13974         if (!msg)
13975                 return;
13976
13977         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
13978         if (!hdr) {
13979                 nlmsg_free(msg);
13980                 return;
13981         }
13982
13983         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13984             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13985             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
13986                 goto nla_put_failure;
13987
13988         rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
13989         if (!rekey_attr)
13990                 goto nla_put_failure;
13991
13992         if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
13993                     NL80211_REPLAY_CTR_LEN, replay_ctr))
13994                 goto nla_put_failure;
13995
13996         nla_nest_end(msg, rekey_attr);
13997
13998         genlmsg_end(msg, hdr);
13999
14000         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14001                                 NL80211_MCGRP_MLME, gfp);
14002         return;
14003
14004  nla_put_failure:
14005         genlmsg_cancel(msg, hdr);
14006         nlmsg_free(msg);
14007 }
14008
14009 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
14010                                const u8 *replay_ctr, gfp_t gfp)
14011 {
14012         struct wireless_dev *wdev = dev->ieee80211_ptr;
14013         struct wiphy *wiphy = wdev->wiphy;
14014         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14015
14016         trace_cfg80211_gtk_rekey_notify(dev, bssid);
14017         nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
14018 }
14019 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
14020
14021 static void
14022 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
14023                                struct net_device *netdev, int index,
14024                                const u8 *bssid, bool preauth, gfp_t gfp)
14025 {
14026         struct sk_buff *msg;
14027         struct nlattr *attr;
14028         void *hdr;
14029
14030         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14031         if (!msg)
14032                 return;
14033
14034         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
14035         if (!hdr) {
14036                 nlmsg_free(msg);
14037                 return;
14038         }
14039
14040         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14041             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
14042                 goto nla_put_failure;
14043
14044         attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
14045         if (!attr)
14046                 goto nla_put_failure;
14047
14048         if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
14049             nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
14050             (preauth &&
14051              nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
14052                 goto nla_put_failure;
14053
14054         nla_nest_end(msg, attr);
14055
14056         genlmsg_end(msg, hdr);
14057
14058         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14059                                 NL80211_MCGRP_MLME, gfp);
14060         return;
14061
14062  nla_put_failure:
14063         genlmsg_cancel(msg, hdr);
14064         nlmsg_free(msg);
14065 }
14066
14067 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
14068                                      const u8 *bssid, bool preauth, gfp_t gfp)
14069 {
14070         struct wireless_dev *wdev = dev->ieee80211_ptr;
14071         struct wiphy *wiphy = wdev->wiphy;
14072         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14073
14074         trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
14075         nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
14076 }
14077 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
14078
14079 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
14080                                      struct net_device *netdev,
14081                                      struct cfg80211_chan_def *chandef,
14082                                      gfp_t gfp,
14083                                      enum nl80211_commands notif,
14084                                      u8 count)
14085 {
14086         struct sk_buff *msg;
14087         void *hdr;
14088
14089         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14090         if (!msg)
14091                 return;
14092
14093         hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
14094         if (!hdr) {
14095                 nlmsg_free(msg);
14096                 return;
14097         }
14098
14099         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
14100                 goto nla_put_failure;
14101
14102         if (nl80211_send_chandef(msg, chandef))
14103                 goto nla_put_failure;
14104
14105         if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) &&
14106             (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count)))
14107                         goto nla_put_failure;
14108
14109         genlmsg_end(msg, hdr);
14110
14111         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14112                                 NL80211_MCGRP_MLME, gfp);
14113         return;
14114
14115  nla_put_failure:
14116         genlmsg_cancel(msg, hdr);
14117         nlmsg_free(msg);
14118 }
14119
14120 void cfg80211_ch_switch_notify(struct net_device *dev,
14121                                struct cfg80211_chan_def *chandef)
14122 {
14123         struct wireless_dev *wdev = dev->ieee80211_ptr;
14124         struct wiphy *wiphy = wdev->wiphy;
14125         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14126
14127         ASSERT_WDEV_LOCK(wdev);
14128
14129         trace_cfg80211_ch_switch_notify(dev, chandef);
14130
14131         wdev->chandef = *chandef;
14132         wdev->preset_chandef = *chandef;
14133         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
14134                                  NL80211_CMD_CH_SWITCH_NOTIFY, 0);
14135 }
14136 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
14137
14138 void cfg80211_ch_switch_started_notify(struct net_device *dev,
14139                                        struct cfg80211_chan_def *chandef,
14140                                        u8 count)
14141 {
14142         struct wireless_dev *wdev = dev->ieee80211_ptr;
14143         struct wiphy *wiphy = wdev->wiphy;
14144         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14145
14146         trace_cfg80211_ch_switch_started_notify(dev, chandef);
14147
14148         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
14149                                  NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count);
14150 }
14151 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
14152
14153 void
14154 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
14155                      const struct cfg80211_chan_def *chandef,
14156                      enum nl80211_radar_event event,
14157                      struct net_device *netdev, gfp_t gfp)
14158 {
14159         struct sk_buff *msg;
14160         void *hdr;
14161
14162         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14163         if (!msg)
14164                 return;
14165
14166         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
14167         if (!hdr) {
14168                 nlmsg_free(msg);
14169                 return;
14170         }
14171
14172         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
14173                 goto nla_put_failure;
14174
14175         /* NOP and radar events don't need a netdev parameter */
14176         if (netdev) {
14177                 struct wireless_dev *wdev = netdev->ieee80211_ptr;
14178
14179                 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14180                     nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14181                                       NL80211_ATTR_PAD))
14182                         goto nla_put_failure;
14183         }
14184
14185         if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
14186                 goto nla_put_failure;
14187
14188         if (nl80211_send_chandef(msg, chandef))
14189                 goto nla_put_failure;
14190
14191         genlmsg_end(msg, hdr);
14192
14193         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14194                                 NL80211_MCGRP_MLME, gfp);
14195         return;
14196
14197  nla_put_failure:
14198         genlmsg_cancel(msg, hdr);
14199         nlmsg_free(msg);
14200 }
14201
14202 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
14203                            u64 cookie, bool acked, gfp_t gfp)
14204 {
14205         struct wireless_dev *wdev = dev->ieee80211_ptr;
14206         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14207         struct sk_buff *msg;
14208         void *hdr;
14209
14210         trace_cfg80211_probe_status(dev, addr, cookie, acked);
14211
14212         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14213
14214         if (!msg)
14215                 return;
14216
14217         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
14218         if (!hdr) {
14219                 nlmsg_free(msg);
14220                 return;
14221         }
14222
14223         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14224             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
14225             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
14226             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
14227                               NL80211_ATTR_PAD) ||
14228             (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
14229                 goto nla_put_failure;
14230
14231         genlmsg_end(msg, hdr);
14232
14233         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14234                                 NL80211_MCGRP_MLME, gfp);
14235         return;
14236
14237  nla_put_failure:
14238         genlmsg_cancel(msg, hdr);
14239         nlmsg_free(msg);
14240 }
14241 EXPORT_SYMBOL(cfg80211_probe_status);
14242
14243 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
14244                                  const u8 *frame, size_t len,
14245                                  int freq, int sig_dbm)
14246 {
14247         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14248         struct sk_buff *msg;
14249         void *hdr;
14250         struct cfg80211_beacon_registration *reg;
14251
14252         trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
14253
14254         spin_lock_bh(&rdev->beacon_registrations_lock);
14255         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
14256                 msg = nlmsg_new(len + 100, GFP_ATOMIC);
14257                 if (!msg) {
14258                         spin_unlock_bh(&rdev->beacon_registrations_lock);
14259                         return;
14260                 }
14261
14262                 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
14263                 if (!hdr)
14264                         goto nla_put_failure;
14265
14266                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14267                     (freq &&
14268                      nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
14269                     (sig_dbm &&
14270                      nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
14271                     nla_put(msg, NL80211_ATTR_FRAME, len, frame))
14272                         goto nla_put_failure;
14273
14274                 genlmsg_end(msg, hdr);
14275
14276                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
14277         }
14278         spin_unlock_bh(&rdev->beacon_registrations_lock);
14279         return;
14280
14281  nla_put_failure:
14282         spin_unlock_bh(&rdev->beacon_registrations_lock);
14283         if (hdr)
14284                 genlmsg_cancel(msg, hdr);
14285         nlmsg_free(msg);
14286 }
14287 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
14288
14289 #ifdef CONFIG_PM
14290 static int cfg80211_net_detect_results(struct sk_buff *msg,
14291                                        struct cfg80211_wowlan_wakeup *wakeup)
14292 {
14293         struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
14294         struct nlattr *nl_results, *nl_match, *nl_freqs;
14295         int i, j;
14296
14297         nl_results = nla_nest_start(
14298                 msg, NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
14299         if (!nl_results)
14300                 return -EMSGSIZE;
14301
14302         for (i = 0; i < nd->n_matches; i++) {
14303                 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
14304
14305                 nl_match = nla_nest_start(msg, i);
14306                 if (!nl_match)
14307                         break;
14308
14309                 /* The SSID attribute is optional in nl80211, but for
14310                  * simplicity reasons it's always present in the
14311                  * cfg80211 structure.  If a driver can't pass the
14312                  * SSID, that needs to be changed.  A zero length SSID
14313                  * is still a valid SSID (wildcard), so it cannot be
14314                  * used for this purpose.
14315                  */
14316                 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
14317                             match->ssid.ssid)) {
14318                         nla_nest_cancel(msg, nl_match);
14319                         goto out;
14320                 }
14321
14322                 if (match->n_channels) {
14323                         nl_freqs = nla_nest_start(
14324                                 msg, NL80211_ATTR_SCAN_FREQUENCIES);
14325                         if (!nl_freqs) {
14326                                 nla_nest_cancel(msg, nl_match);
14327                                 goto out;
14328                         }
14329
14330                         for (j = 0; j < match->n_channels; j++) {
14331                                 if (nla_put_u32(msg, j, match->channels[j])) {
14332                                         nla_nest_cancel(msg, nl_freqs);
14333                                         nla_nest_cancel(msg, nl_match);
14334                                         goto out;
14335                                 }
14336                         }
14337
14338                         nla_nest_end(msg, nl_freqs);
14339                 }
14340
14341                 nla_nest_end(msg, nl_match);
14342         }
14343
14344 out:
14345         nla_nest_end(msg, nl_results);
14346         return 0;
14347 }
14348
14349 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
14350                                    struct cfg80211_wowlan_wakeup *wakeup,
14351                                    gfp_t gfp)
14352 {
14353         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14354         struct sk_buff *msg;
14355         void *hdr;
14356         int size = 200;
14357
14358         trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
14359
14360         if (wakeup)
14361                 size += wakeup->packet_present_len;
14362
14363         msg = nlmsg_new(size, gfp);
14364         if (!msg)
14365                 return;
14366
14367         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
14368         if (!hdr)
14369                 goto free_msg;
14370
14371         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14372             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14373                               NL80211_ATTR_PAD))
14374                 goto free_msg;
14375
14376         if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14377                                         wdev->netdev->ifindex))
14378                 goto free_msg;
14379
14380         if (wakeup) {
14381                 struct nlattr *reasons;
14382
14383                 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
14384                 if (!reasons)
14385                         goto free_msg;
14386
14387                 if (wakeup->disconnect &&
14388                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
14389                         goto free_msg;
14390                 if (wakeup->magic_pkt &&
14391                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
14392                         goto free_msg;
14393                 if (wakeup->gtk_rekey_failure &&
14394                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
14395                         goto free_msg;
14396                 if (wakeup->eap_identity_req &&
14397                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
14398                         goto free_msg;
14399                 if (wakeup->four_way_handshake &&
14400                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
14401                         goto free_msg;
14402                 if (wakeup->rfkill_release &&
14403                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
14404                         goto free_msg;
14405
14406                 if (wakeup->pattern_idx >= 0 &&
14407                     nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
14408                                 wakeup->pattern_idx))
14409                         goto free_msg;
14410
14411                 if (wakeup->tcp_match &&
14412                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
14413                         goto free_msg;
14414
14415                 if (wakeup->tcp_connlost &&
14416                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
14417                         goto free_msg;
14418
14419                 if (wakeup->tcp_nomoretokens &&
14420                     nla_put_flag(msg,
14421                                  NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
14422                         goto free_msg;
14423
14424                 if (wakeup->packet) {
14425                         u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
14426                         u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
14427
14428                         if (!wakeup->packet_80211) {
14429                                 pkt_attr =
14430                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
14431                                 len_attr =
14432                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
14433                         }
14434
14435                         if (wakeup->packet_len &&
14436                             nla_put_u32(msg, len_attr, wakeup->packet_len))
14437                                 goto free_msg;
14438
14439                         if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
14440                                     wakeup->packet))
14441                                 goto free_msg;
14442                 }
14443
14444                 if (wakeup->net_detect &&
14445                     cfg80211_net_detect_results(msg, wakeup))
14446                                 goto free_msg;
14447
14448                 nla_nest_end(msg, reasons);
14449         }
14450
14451         genlmsg_end(msg, hdr);
14452
14453         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14454                                 NL80211_MCGRP_MLME, gfp);
14455         return;
14456
14457  free_msg:
14458         nlmsg_free(msg);
14459 }
14460 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
14461 #endif
14462
14463 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
14464                                 enum nl80211_tdls_operation oper,
14465                                 u16 reason_code, gfp_t gfp)
14466 {
14467         struct wireless_dev *wdev = dev->ieee80211_ptr;
14468         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14469         struct sk_buff *msg;
14470         void *hdr;
14471
14472         trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
14473                                          reason_code);
14474
14475         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14476         if (!msg)
14477                 return;
14478
14479         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
14480         if (!hdr) {
14481                 nlmsg_free(msg);
14482                 return;
14483         }
14484
14485         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14486             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
14487             nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
14488             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
14489             (reason_code > 0 &&
14490              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
14491                 goto nla_put_failure;
14492
14493         genlmsg_end(msg, hdr);
14494
14495         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14496                                 NL80211_MCGRP_MLME, gfp);
14497         return;
14498
14499  nla_put_failure:
14500         genlmsg_cancel(msg, hdr);
14501         nlmsg_free(msg);
14502 }
14503 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
14504
14505 static int nl80211_netlink_notify(struct notifier_block * nb,
14506                                   unsigned long state,
14507                                   void *_notify)
14508 {
14509         struct netlink_notify *notify = _notify;
14510         struct cfg80211_registered_device *rdev;
14511         struct wireless_dev *wdev;
14512         struct cfg80211_beacon_registration *reg, *tmp;
14513
14514         if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC)
14515                 return NOTIFY_DONE;
14516
14517         rcu_read_lock();
14518
14519         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
14520                 bool schedule_destroy_work = false;
14521                 struct cfg80211_sched_scan_request *sched_scan_req =
14522                         rcu_dereference(rdev->sched_scan_req);
14523
14524                 if (sched_scan_req && notify->portid &&
14525                     sched_scan_req->owner_nlportid == notify->portid) {
14526                         sched_scan_req->owner_nlportid = 0;
14527
14528                         if (rdev->ops->sched_scan_stop &&
14529                             rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
14530                                 schedule_work(&rdev->sched_scan_stop_wk);
14531                 }
14532
14533                 list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) {
14534                         cfg80211_mlme_unregister_socket(wdev, notify->portid);
14535
14536                         if (wdev->owner_nlportid == notify->portid)
14537                                 schedule_destroy_work = true;
14538                 }
14539
14540                 spin_lock_bh(&rdev->beacon_registrations_lock);
14541                 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
14542                                          list) {
14543                         if (reg->nlportid == notify->portid) {
14544                                 list_del(&reg->list);
14545                                 kfree(reg);
14546                                 break;
14547                         }
14548                 }
14549                 spin_unlock_bh(&rdev->beacon_registrations_lock);
14550
14551                 if (schedule_destroy_work) {
14552                         struct cfg80211_iface_destroy *destroy;
14553
14554                         destroy = kzalloc(sizeof(*destroy), GFP_ATOMIC);
14555                         if (destroy) {
14556                                 destroy->nlportid = notify->portid;
14557                                 spin_lock(&rdev->destroy_list_lock);
14558                                 list_add(&destroy->list, &rdev->destroy_list);
14559                                 spin_unlock(&rdev->destroy_list_lock);
14560                                 schedule_work(&rdev->destroy_work);
14561                         }
14562                 }
14563         }
14564
14565         rcu_read_unlock();
14566
14567         /*
14568          * It is possible that the user space process that is controlling the
14569          * indoor setting disappeared, so notify the regulatory core.
14570          */
14571         regulatory_netlink_notify(notify->portid);
14572         return NOTIFY_OK;
14573 }
14574
14575 static struct notifier_block nl80211_netlink_notifier = {
14576         .notifier_call = nl80211_netlink_notify,
14577 };
14578
14579 void cfg80211_ft_event(struct net_device *netdev,
14580                        struct cfg80211_ft_event_params *ft_event)
14581 {
14582         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
14583         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14584         struct sk_buff *msg;
14585         void *hdr;
14586
14587         trace_cfg80211_ft_event(wiphy, netdev, ft_event);
14588
14589         if (!ft_event->target_ap)
14590                 return;
14591
14592         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14593         if (!msg)
14594                 return;
14595
14596         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
14597         if (!hdr)
14598                 goto out;
14599
14600         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14601             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14602             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
14603                 goto out;
14604
14605         if (ft_event->ies &&
14606             nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
14607                 goto out;
14608         if (ft_event->ric_ies &&
14609             nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
14610                     ft_event->ric_ies))
14611                 goto out;
14612
14613         genlmsg_end(msg, hdr);
14614
14615         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14616                                 NL80211_MCGRP_MLME, GFP_KERNEL);
14617         return;
14618  out:
14619         nlmsg_free(msg);
14620 }
14621 EXPORT_SYMBOL(cfg80211_ft_event);
14622
14623 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
14624 {
14625         struct cfg80211_registered_device *rdev;
14626         struct sk_buff *msg;
14627         void *hdr;
14628         u32 nlportid;
14629
14630         rdev = wiphy_to_rdev(wdev->wiphy);
14631         if (!rdev->crit_proto_nlportid)
14632                 return;
14633
14634         nlportid = rdev->crit_proto_nlportid;
14635         rdev->crit_proto_nlportid = 0;
14636
14637         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14638         if (!msg)
14639                 return;
14640
14641         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
14642         if (!hdr)
14643                 goto nla_put_failure;
14644
14645         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14646             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14647                               NL80211_ATTR_PAD))
14648                 goto nla_put_failure;
14649
14650         genlmsg_end(msg, hdr);
14651
14652         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
14653         return;
14654
14655  nla_put_failure:
14656         if (hdr)
14657                 genlmsg_cancel(msg, hdr);
14658         nlmsg_free(msg);
14659 }
14660 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
14661
14662 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
14663 {
14664         struct wiphy *wiphy = wdev->wiphy;
14665         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14666         struct sk_buff *msg;
14667         void *hdr;
14668
14669         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14670         if (!msg)
14671                 return;
14672
14673         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
14674         if (!hdr)
14675                 goto out;
14676
14677         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14678             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
14679             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14680                               NL80211_ATTR_PAD))
14681                 goto out;
14682
14683         genlmsg_end(msg, hdr);
14684
14685         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
14686                                 NL80211_MCGRP_MLME, GFP_KERNEL);
14687         return;
14688  out:
14689         nlmsg_free(msg);
14690 }
14691
14692 /* initialisation/exit functions */
14693
14694 int __init nl80211_init(void)
14695 {
14696         int err;
14697
14698         err = genl_register_family(&nl80211_fam);
14699         if (err)
14700                 return err;
14701
14702         err = netlink_register_notifier(&nl80211_netlink_notifier);
14703         if (err)
14704                 goto err_out;
14705
14706         return 0;
14707  err_out:
14708         genl_unregister_family(&nl80211_fam);
14709         return err;
14710 }
14711
14712 void nl80211_exit(void)
14713 {
14714         netlink_unregister_notifier(&nl80211_netlink_notifier);
14715         genl_unregister_family(&nl80211_fam);
14716 }