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  */
   7
   8 #include <linux/if.h>
   9 #include <linux/module.h>
  10 #include <linux/err.h>
  11 #include <linux/slab.h>
  12 #include <linux/list.h>
  13 #include <linux/if_ether.h>
  14 #include <linux/ieee80211.h>
  15 #include <linux/nl80211.h>
  16 #include <linux/rtnetlink.h>
  17 #include <linux/netlink.h>
  18 #include <linux/etherdevice.h>
  19 #include <net/net_namespace.h>
  20 #include <net/genetlink.h>
  21 #include <net/cfg80211.h>
  22 #include <net/sock.h>
  23 #include <net/inet_connection_sock.h>
  24 #include "core.h"
  25 #include "nl80211.h"
  26 #include "reg.h"
  27 #include "rdev-ops.h"
  28
  29 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
  30                                    struct genl_info *info,
  31                                    struct cfg80211_crypto_settings *settings,
  32                                    int cipher_limit);
  33
  34 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
  35                             struct genl_info *info);
  36 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
  37                               struct genl_info *info);
  38
  39 /* the netlink family */
  40 static struct genl_family nl80211_fam = {
  41         .id = GENL_ID_GENERATE,         /* don't bother with a hardcoded ID */
  42         .name = NL80211_GENL_NAME,      /* have users key off the name instead */
  43         .hdrsize = 0,                   /* no private header */
  44         .version = 1,                   /* no particular meaning now */
  45         .maxattr = NL80211_ATTR_MAX,
  46         .netnsok = true,
  47         .pre_doit = nl80211_pre_doit,
  48         .post_doit = nl80211_post_doit,
  49 };
  50
  51 /* multicast groups */
  52 enum nl80211_multicast_groups {
  53         NL80211_MCGRP_CONFIG,
  54         NL80211_MCGRP_SCAN,
  55         NL80211_MCGRP_REGULATORY,
  56         NL80211_MCGRP_MLME,
  57         NL80211_MCGRP_VENDOR,
  58         NL80211_MCGRP_TESTMODE /* keep last - ifdef! */
  59 };
  60
  61 static const struct genl_multicast_group nl80211_mcgrps[] = {
  62         [NL80211_MCGRP_CONFIG] = { .name = NL80211_MULTICAST_GROUP_CONFIG },
  63         [NL80211_MCGRP_SCAN] = { .name = NL80211_MULTICAST_GROUP_SCAN },
  64         [NL80211_MCGRP_REGULATORY] = { .name = NL80211_MULTICAST_GROUP_REG },
  65         [NL80211_MCGRP_MLME] = { .name = NL80211_MULTICAST_GROUP_MLME },
  66         [NL80211_MCGRP_VENDOR] = { .name = NL80211_MULTICAST_GROUP_VENDOR },
  67 #ifdef CONFIG_NL80211_TESTMODE
  68         [NL80211_MCGRP_TESTMODE] = { .name = NL80211_MULTICAST_GROUP_TESTMODE }
  69 #endif
  70 };
  71
  72 /* returns ERR_PTR values */
  73 static struct wireless_dev *
  74 __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs)
  75 {
  76         struct cfg80211_registered_device *rdev;
  77         struct wireless_dev *result = NULL;
  78         bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
  79         bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
  80         u64 wdev_id;
  81         int wiphy_idx = -1;
  82         int ifidx = -1;
  83
  84         ASSERT_RTNL();
  85
  86         if (!have_ifidx && !have_wdev_id)
  87                 return ERR_PTR(-EINVAL);
  88
  89         if (have_ifidx)
  90                 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
  91         if (have_wdev_id) {
  92                 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
  93                 wiphy_idx = wdev_id >> 32;
  94         }
  95
  96         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
  97                 struct wireless_dev *wdev;
  98
  99                 if (wiphy_net(&rdev->wiphy) != netns)
 100                         continue;
 101
 102                 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
 103                         continue;
 104
 105                 list_for_each_entry(wdev, &rdev->wdev_list, list) {
 106                         if (have_ifidx && wdev->netdev &&
 107                             wdev->netdev->ifindex == ifidx) {
 108                                 result = wdev;
 109                                 break;
 110                         }
 111                         if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
 112                                 result = wdev;
 113                                 break;
 114                         }
 115                 }
 116
 117                 if (result)
 118                         break;
 119         }
 120
 121         if (result)
 122                 return result;
 123         return ERR_PTR(-ENODEV);
 124 }
 125
 126 static struct cfg80211_registered_device *
 127 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
 128 {
 129         struct cfg80211_registered_device *rdev = NULL, *tmp;
 130         struct net_device *netdev;
 131
 132         ASSERT_RTNL();
 133
 134         if (!attrs[NL80211_ATTR_WIPHY] &&
 135             !attrs[NL80211_ATTR_IFINDEX] &&
 136             !attrs[NL80211_ATTR_WDEV])
 137                 return ERR_PTR(-EINVAL);
 138
 139         if (attrs[NL80211_ATTR_WIPHY])
 140                 rdev = cfg80211_rdev_by_wiphy_idx(
 141                                 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
 142
 143         if (attrs[NL80211_ATTR_WDEV]) {
 144                 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
 145                 struct wireless_dev *wdev;
 146                 bool found = false;
 147
 148                 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
 149                 if (tmp) {
 150                         /* make sure wdev exists */
 151                         list_for_each_entry(wdev, &tmp->wdev_list, list) {
 152                                 if (wdev->identifier != (u32)wdev_id)
 153                                         continue;
 154                                 found = true;
 155                                 break;
 156                         }
 157
 158                         if (!found)
 159                                 tmp = NULL;
 160
 161                         if (rdev && tmp != rdev)
 162                                 return ERR_PTR(-EINVAL);
 163                         rdev = tmp;
 164                 }
 165         }
 166
 167         if (attrs[NL80211_ATTR_IFINDEX]) {
 168                 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
 169                 netdev = __dev_get_by_index(netns, ifindex);
 170                 if (netdev) {
 171                         if (netdev->ieee80211_ptr)
 172                                 tmp = wiphy_to_rdev(
 173                                         netdev->ieee80211_ptr->wiphy);
 174                         else
 175                                 tmp = NULL;
 176
 177                         /* not wireless device -- return error */
 178                         if (!tmp)
 179                                 return ERR_PTR(-EINVAL);
 180
 181                         /* mismatch -- return error */
 182                         if (rdev && tmp != rdev)
 183                                 return ERR_PTR(-EINVAL);
 184
 185                         rdev = tmp;
 186                 }
 187         }
 188
 189         if (!rdev)
 190                 return ERR_PTR(-ENODEV);
 191
 192         if (netns != wiphy_net(&rdev->wiphy))
 193                 return ERR_PTR(-ENODEV);
 194
 195         return rdev;
 196 }
 197
 198 /*
 199  * This function returns a pointer to the driver
 200  * that the genl_info item that is passed refers to.
 201  *
 202  * The result of this can be a PTR_ERR and hence must
 203  * be checked with IS_ERR() for errors.
 204  */
 205 static struct cfg80211_registered_device *
 206 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
 207 {
 208         return __cfg80211_rdev_from_attrs(netns, info->attrs);
 209 }
 210
 211 /* policy for the attributes */
 212 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
 213         [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
 214         [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
 215                                       .len = 20-1 },
 216         [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
 217
 218         [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
 219         [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
 220         [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
 221         [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
 222         [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
 223
 224         [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
 225         [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
 226         [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
 227         [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
 228         [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
 229         [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG },
 230
 231         [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
 232         [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
 233         [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
 234
 235         [NL80211_ATTR_MAC] = { .len = ETH_ALEN },
 236         [NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN },
 237
 238         [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
 239         [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
 240                                     .len = WLAN_MAX_KEY_LEN },
 241         [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
 242         [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
 243         [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
 244         [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 245         [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 },
 246
 247         [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
 248         [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
 249         [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
 250                                        .len = IEEE80211_MAX_DATA_LEN },
 251         [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
 252                                        .len = IEEE80211_MAX_DATA_LEN },
 253         [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
 254         [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
 255         [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
 256         [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
 257                                                .len = NL80211_MAX_SUPP_RATES },
 258         [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
 259         [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
 260         [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
 261         [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
 262                                    .len = IEEE80211_MAX_MESH_ID_LEN },
 263         [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
 264
 265         [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
 266         [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
 267
 268         [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
 269         [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
 270         [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
 271         [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
 272                                            .len = NL80211_MAX_SUPP_RATES },
 273         [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
 274
 275         [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
 276         [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
 277
 278         [NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN },
 279
 280         [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
 281         [NL80211_ATTR_IE] = { .type = NLA_BINARY,
 282                               .len = IEEE80211_MAX_DATA_LEN },
 283         [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
 284         [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
 285
 286         [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
 287                                 .len = IEEE80211_MAX_SSID_LEN },
 288         [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
 289         [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
 290         [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
 291         [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
 292         [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
 293         [NL80211_ATTR_STA_FLAGS2] = {
 294                 .len = sizeof(struct nl80211_sta_flag_update),
 295         },
 296         [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
 297         [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
 298         [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
 299         [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
 300         [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
 301         [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
 302         [NL80211_ATTR_PID] = { .type = NLA_U32 },
 303         [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
 304         [NL80211_ATTR_PMKID] = { .type = NLA_BINARY,
 305                                  .len = WLAN_PMKID_LEN },
 306         [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
 307         [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
 308         [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
 309         [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
 310                                  .len = IEEE80211_MAX_DATA_LEN },
 311         [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
 312         [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
 313         [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
 314         [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
 315         [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
 316         [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
 317         [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
 318         [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
 319         [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
 320         [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
 321         [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
 322         [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
 323         [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 324         [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
 325         [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 },
 326         [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
 327         [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
 328         [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
 329         [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 },
 330         [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY,
 331                                          .len = IEEE80211_MAX_DATA_LEN },
 332         [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY,
 333                                          .len = IEEE80211_MAX_DATA_LEN },
 334         [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
 335         [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
 336         [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
 337         [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
 338         [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
 339         [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
 340         [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
 341         [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
 342         [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
 343         [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
 344         [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
 345                                       .len = IEEE80211_MAX_DATA_LEN },
 346         [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
 347         [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
 348         [NL80211_ATTR_HT_CAPABILITY_MASK] = {
 349                 .len = NL80211_HT_CAPABILITY_LEN
 350         },
 351         [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
 352         [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
 353         [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
 354         [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
 355         [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
 356         [NL80211_ATTR_SAE_DATA] = { .type = NLA_BINARY, },
 357         [NL80211_ATTR_VHT_CAPABILITY] = { .len = NL80211_VHT_CAPABILITY_LEN },
 358         [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
 359         [NL80211_ATTR_P2P_CTWINDOW] = { .type = NLA_U8 },
 360         [NL80211_ATTR_P2P_OPPPS] = { .type = NLA_U8 },
 361         [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
 362         [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
 363         [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
 364         [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
 365         [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
 366         [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
 367         [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
 368                 .len = NL80211_VHT_CAPABILITY_LEN,
 369         },
 370         [NL80211_ATTR_MDID] = { .type = NLA_U16 },
 371         [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
 372                                   .len = IEEE80211_MAX_DATA_LEN },
 373         [NL80211_ATTR_PEER_AID] = { .type = NLA_U16 },
 374         [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
 375         [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
 376         [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
 377         [NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_BINARY },
 378         [NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_BINARY },
 379         [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY },
 380         [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY },
 381         [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
 382         [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
 383         [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
 384         [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
 385         [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
 386         [NL80211_ATTR_QOS_MAP] = { .type = NLA_BINARY,
 387                                    .len = IEEE80211_QOS_MAP_LEN_MAX },
 388         [NL80211_ATTR_MAC_HINT] = { .len = ETH_ALEN },
 389         [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
 390         [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
 391         [NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG },
 392         [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
 393         [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
 394         [NL80211_ATTR_TSID] = { .type = NLA_U8 },
 395         [NL80211_ATTR_USER_PRIO] = { .type = NLA_U8 },
 396         [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
 397         [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
 398         [NL80211_ATTR_MAC_MASK] = { .len = ETH_ALEN },
 399         [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG },
 400         [NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 },
 401         [NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 },
 402         [NL80211_ATTR_REG_INDOOR] = { .type = NLA_FLAG },
 403 };
 404
 405 /* policy for the key attributes */
 406 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
 407         [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
 408         [NL80211_KEY_IDX] = { .type = NLA_U8 },
 409         [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
 410         [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 411         [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
 412         [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
 413         [NL80211_KEY_TYPE] = { .type = NLA_U32 },
 414         [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 415 };
 416
 417 /* policy for the key default flags */
 418 static const struct nla_policy
 419 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
 420         [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
 421         [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
 422 };
 423
 424 /* policy for WoWLAN attributes */
 425 static const struct nla_policy
 426 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
 427         [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
 428         [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
 429         [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
 430         [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
 431         [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
 432         [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
 433         [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
 434         [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
 435         [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
 436         [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
 437 };
 438
 439 static const struct nla_policy
 440 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
 441         [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
 442         [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
 443         [NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN },
 444         [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
 445         [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
 446         [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 },
 447         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
 448                 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
 449         },
 450         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
 451                 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
 452         },
 453         [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
 454         [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 },
 455         [NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 },
 456 };
 457
 458 /* policy for coalesce rule attributes */
 459 static const struct nla_policy
 460 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
 461         [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
 462         [NL80211_ATTR_COALESCE_RULE_CONDITION] = { .type = NLA_U32 },
 463         [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
 464 };
 465
 466 /* policy for GTK rekey offload attributes */
 467 static const struct nla_policy
 468 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
 469         [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
 470         [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
 471         [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
 472 };
 473
 474 static const struct nla_policy
 475 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
 476         [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
 477                                                  .len = IEEE80211_MAX_SSID_LEN },
 478         [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
 479 };
 480
 481 static int nl80211_prepare_wdev_dump(struct sk_buff *skb,
 482                                      struct netlink_callback *cb,
 483                                      struct cfg80211_registered_device **rdev,
 484                                      struct wireless_dev **wdev)
 485 {
 486         int err;
 487
 488         rtnl_lock();
 489
 490         if (!cb->args[0]) {
 491                 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
 492                                   nl80211_fam.attrbuf, nl80211_fam.maxattr,
 493                                   nl80211_policy);
 494                 if (err)
 495                         goto out_unlock;
 496
 497                 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk),
 498                                                    nl80211_fam.attrbuf);
 499                 if (IS_ERR(*wdev)) {
 500                         err = PTR_ERR(*wdev);
 501                         goto out_unlock;
 502                 }
 503                 *rdev = wiphy_to_rdev((*wdev)->wiphy);
 504                 /* 0 is the first index - add 1 to parse only once */
 505                 cb->args[0] = (*rdev)->wiphy_idx + 1;
 506                 cb->args[1] = (*wdev)->identifier;
 507         } else {
 508                 /* subtract the 1 again here */
 509                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
 510                 struct wireless_dev *tmp;
 511
 512                 if (!wiphy) {
 513                         err = -ENODEV;
 514                         goto out_unlock;
 515                 }
 516                 *rdev = wiphy_to_rdev(wiphy);
 517                 *wdev = NULL;
 518
 519                 list_for_each_entry(tmp, &(*rdev)->wdev_list, list) {
 520                         if (tmp->identifier == cb->args[1]) {
 521                                 *wdev = tmp;
 522                                 break;
 523                         }
 524                 }
 525
 526                 if (!*wdev) {
 527                         err = -ENODEV;
 528                         goto out_unlock;
 529                 }
 530         }
 531
 532         return 0;
 533  out_unlock:
 534         rtnl_unlock();
 535         return err;
 536 }
 537
 538 static void nl80211_finish_wdev_dump(struct cfg80211_registered_device *rdev)
 539 {
 540         rtnl_unlock();
 541 }
 542
 543 /* IE validation */
 544 static bool is_valid_ie_attr(const struct nlattr *attr)
 545 {
 546         const u8 *pos;
 547         int len;
 548
 549         if (!attr)
 550                 return true;
 551
 552         pos = nla_data(attr);
 553         len = nla_len(attr);
 554
 555         while (len) {
 556                 u8 elemlen;
 557
 558                 if (len < 2)
 559                         return false;
 560                 len -= 2;
 561
 562                 elemlen = pos[1];
 563                 if (elemlen > len)
 564                         return false;
 565
 566                 len -= elemlen;
 567                 pos += 2 + elemlen;
 568         }
 569
 570         return true;
 571 }
 572
 573 /* message building helper */
 574 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
 575                                    int flags, u8 cmd)
 576 {
 577         /* since there is no private header just add the generic one */
 578         return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
 579 }
 580
 581 static int nl80211_msg_put_channel(struct sk_buff *msg,
 582                                    struct ieee80211_channel *chan,
 583                                    bool large)
 584 {
 585         /* Some channels must be completely excluded from the
 586          * list to protect old user-space tools from breaking
 587          */
 588         if (!large && chan->flags &
 589             (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
 590                 return 0;
 591
 592         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
 593                         chan->center_freq))
 594                 goto nla_put_failure;
 595
 596         if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
 597             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
 598                 goto nla_put_failure;
 599         if (chan->flags & IEEE80211_CHAN_NO_IR) {
 600                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
 601                         goto nla_put_failure;
 602                 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
 603                         goto nla_put_failure;
 604         }
 605         if (chan->flags & IEEE80211_CHAN_RADAR) {
 606                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
 607                         goto nla_put_failure;
 608                 if (large) {
 609                         u32 time;
 610
 611                         time = elapsed_jiffies_msecs(chan->dfs_state_entered);
 612
 613                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
 614                                         chan->dfs_state))
 615                                 goto nla_put_failure;
 616                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
 617                                         time))
 618                                 goto nla_put_failure;
 619                         if (nla_put_u32(msg,
 620                                         NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
 621                                         chan->dfs_cac_ms))
 622                                 goto nla_put_failure;
 623                 }
 624         }
 625
 626         if (large) {
 627                 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
 628                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
 629                         goto nla_put_failure;
 630                 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
 631                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
 632                         goto nla_put_failure;
 633                 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
 634                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
 635                         goto nla_put_failure;
 636                 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
 637                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
 638                         goto nla_put_failure;
 639                 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
 640                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
 641                         goto nla_put_failure;
 642                 if ((chan->flags & IEEE80211_CHAN_IR_CONCURRENT) &&
 643                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_IR_CONCURRENT))
 644                         goto nla_put_failure;
 645                 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
 646                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
 647                         goto nla_put_failure;
 648                 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
 649                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
 650                         goto nla_put_failure;
 651         }
 652
 653         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
 654                         DBM_TO_MBM(chan->max_power)))
 655                 goto nla_put_failure;
 656
 657         return 0;
 658
 659  nla_put_failure:
 660         return -ENOBUFS;
 661 }
 662
 663 /* netlink command implementations */
 664
 665 struct key_parse {
 666         struct key_params p;
 667         int idx;
 668         int type;
 669         bool def, defmgmt;
 670         bool def_uni, def_multi;
 671 };
 672
 673 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
 674 {
 675         struct nlattr *tb[NL80211_KEY_MAX + 1];
 676         int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
 677                                    nl80211_key_policy);
 678         if (err)
 679                 return err;
 680
 681         k->def = !!tb[NL80211_KEY_DEFAULT];
 682         k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
 683
 684         if (k->def) {
 685                 k->def_uni = true;
 686                 k->def_multi = true;
 687         }
 688         if (k->defmgmt)
 689                 k->def_multi = true;
 690
 691         if (tb[NL80211_KEY_IDX])
 692                 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
 693
 694         if (tb[NL80211_KEY_DATA]) {
 695                 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
 696                 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
 697         }
 698
 699         if (tb[NL80211_KEY_SEQ]) {
 700                 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
 701                 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
 702         }
 703
 704         if (tb[NL80211_KEY_CIPHER])
 705                 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
 706
 707         if (tb[NL80211_KEY_TYPE]) {
 708                 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
 709                 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
 710                         return -EINVAL;
 711         }
 712
 713         if (tb[NL80211_KEY_DEFAULT_TYPES]) {
 714                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
 715                 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
 716                                        tb[NL80211_KEY_DEFAULT_TYPES],
 717                                        nl80211_key_default_policy);
 718                 if (err)
 719                         return err;
 720
 721                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
 722                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
 723         }
 724
 725         return 0;
 726 }
 727
 728 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
 729 {
 730         if (info->attrs[NL80211_ATTR_KEY_DATA]) {
 731                 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
 732                 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
 733         }
 734
 735         if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
 736                 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
 737                 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
 738         }
 739
 740         if (info->attrs[NL80211_ATTR_KEY_IDX])
 741                 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
 742
 743         if (info->attrs[NL80211_ATTR_KEY_CIPHER])
 744                 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
 745
 746         k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
 747         k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
 748
 749         if (k->def) {
 750                 k->def_uni = true;
 751                 k->def_multi = true;
 752         }
 753         if (k->defmgmt)
 754                 k->def_multi = true;
 755
 756         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
 757                 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
 758                 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
 759                         return -EINVAL;
 760         }
 761
 762         if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
 763                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
 764                 int err = nla_parse_nested(
 765                                 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
 766                                 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
 767                                 nl80211_key_default_policy);
 768                 if (err)
 769                         return err;
 770
 771                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
 772                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
 773         }
 774
 775         return 0;
 776 }
 777
 778 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
 779 {
 780         int err;
 781
 782         memset(k, 0, sizeof(*k));
 783         k->idx = -1;
 784         k->type = -1;
 785
 786         if (info->attrs[NL80211_ATTR_KEY])
 787                 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
 788         else
 789                 err = nl80211_parse_key_old(info, k);
 790
 791         if (err)
 792                 return err;
 793
 794         if (k->def && k->defmgmt)
 795                 return -EINVAL;
 796
 797         if (k->defmgmt) {
 798                 if (k->def_uni || !k->def_multi)
 799                         return -EINVAL;
 800         }
 801
 802         if (k->idx != -1) {
 803                 if (k->defmgmt) {
 804                         if (k->idx < 4 || k->idx > 5)
 805                                 return -EINVAL;
 806                 } else if (k->def) {
 807                         if (k->idx < 0 || k->idx > 3)
 808                                 return -EINVAL;
 809                 } else {
 810                         if (k->idx < 0 || k->idx > 5)
 811                                 return -EINVAL;
 812                 }
 813         }
 814
 815         return 0;
 816 }
 817
 818 static struct cfg80211_cached_keys *
 819 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
 820                        struct nlattr *keys, bool *no_ht)
 821 {
 822         struct key_parse parse;
 823         struct nlattr *key;
 824         struct cfg80211_cached_keys *result;
 825         int rem, err, def = 0;
 826
 827         result = kzalloc(sizeof(*result), GFP_KERNEL);
 828         if (!result)
 829                 return ERR_PTR(-ENOMEM);
 830
 831         result->def = -1;
 832         result->defmgmt = -1;
 833
 834         nla_for_each_nested(key, keys, rem) {
 835                 memset(&parse, 0, sizeof(parse));
 836                 parse.idx = -1;
 837
 838                 err = nl80211_parse_key_new(key, &parse);
 839                 if (err)
 840                         goto error;
 841                 err = -EINVAL;
 842                 if (!parse.p.key)
 843                         goto error;
 844                 if (parse.idx < 0 || parse.idx > 4)
 845                         goto error;
 846                 if (parse.def) {
 847                         if (def)
 848                                 goto error;
 849                         def = 1;
 850                         result->def = parse.idx;
 851                         if (!parse.def_uni || !parse.def_multi)
 852                                 goto error;
 853                 } else if (parse.defmgmt)
 854                         goto error;
 855                 err = cfg80211_validate_key_settings(rdev, &parse.p,
 856                                                      parse.idx, false, NULL);
 857                 if (err)
 858                         goto error;
 859                 result->params[parse.idx].cipher = parse.p.cipher;
 860                 result->params[parse.idx].key_len = parse.p.key_len;
 861                 result->params[parse.idx].key = result->data[parse.idx];
 862                 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
 863
 864                 if (parse.p.cipher == WLAN_CIPHER_SUITE_WEP40 ||
 865                     parse.p.cipher == WLAN_CIPHER_SUITE_WEP104) {
 866                         if (no_ht)
 867                                 *no_ht = true;
 868                 }
 869         }
 870
 871         return result;
 872  error:
 873         kfree(result);
 874         return ERR_PTR(err);
 875 }
 876
 877 static int nl80211_key_allowed(struct wireless_dev *wdev)
 878 {
 879         ASSERT_WDEV_LOCK(wdev);
 880
 881         switch (wdev->iftype) {
 882         case NL80211_IFTYPE_AP:
 883         case NL80211_IFTYPE_AP_VLAN:
 884         case NL80211_IFTYPE_P2P_GO:
 885         case NL80211_IFTYPE_MESH_POINT:
 886                 break;
 887         case NL80211_IFTYPE_ADHOC:
 888         case NL80211_IFTYPE_STATION:
 889         case NL80211_IFTYPE_P2P_CLIENT:
 890                 if (!wdev->current_bss)
 891                         return -ENOLINK;
 892                 break;
 893         case NL80211_IFTYPE_UNSPECIFIED:
 894         case NL80211_IFTYPE_OCB:
 895         case NL80211_IFTYPE_MONITOR:
 896         case NL80211_IFTYPE_P2P_DEVICE:
 897         case NL80211_IFTYPE_WDS:
 898         case NUM_NL80211_IFTYPES:
 899                 return -EINVAL;
 900         }
 901
 902         return 0;
 903 }
 904
 905 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
 906                                                         struct nlattr *tb)
 907 {
 908         struct ieee80211_channel *chan;
 909
 910         if (tb == NULL)
 911                 return NULL;
 912         chan = ieee80211_get_channel(wiphy, nla_get_u32(tb));
 913         if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
 914                 return NULL;
 915         return chan;
 916 }
 917
 918 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
 919 {
 920         struct nlattr *nl_modes = nla_nest_start(msg, attr);
 921         int i;
 922
 923         if (!nl_modes)
 924                 goto nla_put_failure;
 925
 926         i = 0;
 927         while (ifmodes) {
 928                 if ((ifmodes & 1) && nla_put_flag(msg, i))
 929                         goto nla_put_failure;
 930                 ifmodes >>= 1;
 931                 i++;
 932         }
 933
 934         nla_nest_end(msg, nl_modes);
 935         return 0;
 936
 937 nla_put_failure:
 938         return -ENOBUFS;
 939 }
 940
 941 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
 942                                           struct sk_buff *msg,
 943                                           bool large)
 944 {
 945         struct nlattr *nl_combis;
 946         int i, j;
 947
 948         nl_combis = nla_nest_start(msg,
 949                                 NL80211_ATTR_INTERFACE_COMBINATIONS);
 950         if (!nl_combis)
 951                 goto nla_put_failure;
 952
 953         for (i = 0; i < wiphy->n_iface_combinations; i++) {
 954                 const struct ieee80211_iface_combination *c;
 955                 struct nlattr *nl_combi, *nl_limits;
 956
 957                 c = &wiphy->iface_combinations[i];
 958
 959                 nl_combi = nla_nest_start(msg, i + 1);
 960                 if (!nl_combi)
 961                         goto nla_put_failure;
 962
 963                 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
 964                 if (!nl_limits)
 965                         goto nla_put_failure;
 966
 967                 for (j = 0; j < c->n_limits; j++) {
 968                         struct nlattr *nl_limit;
 969
 970                         nl_limit = nla_nest_start(msg, j + 1);
 971                         if (!nl_limit)
 972                                 goto nla_put_failure;
 973                         if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
 974                                         c->limits[j].max))
 975                                 goto nla_put_failure;
 976                         if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
 977                                                 c->limits[j].types))
 978                                 goto nla_put_failure;
 979                         nla_nest_end(msg, nl_limit);
 980                 }
 981
 982                 nla_nest_end(msg, nl_limits);
 983
 984                 if (c->beacon_int_infra_match &&
 985                     nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
 986                         goto nla_put_failure;
 987                 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
 988                                 c->num_different_channels) ||
 989                     nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
 990                                 c->max_interfaces))
 991                         goto nla_put_failure;
 992                 if (large &&
 993                     (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
 994                                 c->radar_detect_widths) ||
 995                      nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
 996                                 c->radar_detect_regions)))
 997                         goto nla_put_failure;
 998
 999                 nla_nest_end(msg, nl_combi);
1000         }
1001
1002         nla_nest_end(msg, nl_combis);
1003
1004         return 0;
1005 nla_put_failure:
1006         return -ENOBUFS;
1007 }
1008
1009 #ifdef CONFIG_PM
1010 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1011                                         struct sk_buff *msg)
1012 {
1013         const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1014         struct nlattr *nl_tcp;
1015
1016         if (!tcp)
1017                 return 0;
1018
1019         nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1020         if (!nl_tcp)
1021                 return -ENOBUFS;
1022
1023         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1024                         tcp->data_payload_max))
1025                 return -ENOBUFS;
1026
1027         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1028                         tcp->data_payload_max))
1029                 return -ENOBUFS;
1030
1031         if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1032                 return -ENOBUFS;
1033
1034         if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1035                                 sizeof(*tcp->tok), tcp->tok))
1036                 return -ENOBUFS;
1037
1038         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1039                         tcp->data_interval_max))
1040                 return -ENOBUFS;
1041
1042         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1043                         tcp->wake_payload_max))
1044                 return -ENOBUFS;
1045
1046         nla_nest_end(msg, nl_tcp);
1047         return 0;
1048 }
1049
1050 static int nl80211_send_wowlan(struct sk_buff *msg,
1051                                struct cfg80211_registered_device *rdev,
1052                                bool large)
1053 {
1054         struct nlattr *nl_wowlan;
1055
1056         if (!rdev->wiphy.wowlan)
1057                 return 0;
1058
1059         nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1060         if (!nl_wowlan)
1061                 return -ENOBUFS;
1062
1063         if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1064              nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1065             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1066              nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1067             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1068              nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1069             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1070              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1071             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1072              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1073             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1074              nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1075             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1076              nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1077             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1078              nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1079                 return -ENOBUFS;
1080
1081         if (rdev->wiphy.wowlan->n_patterns) {
1082                 struct nl80211_pattern_support pat = {
1083                         .max_patterns = rdev->wiphy.wowlan->n_patterns,
1084                         .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1085                         .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1086                         .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1087                 };
1088
1089                 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1090                             sizeof(pat), &pat))
1091                         return -ENOBUFS;
1092         }
1093
1094         if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) &&
1095             nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT,
1096                         rdev->wiphy.wowlan->max_nd_match_sets))
1097                 return -ENOBUFS;
1098
1099         if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1100                 return -ENOBUFS;
1101
1102         nla_nest_end(msg, nl_wowlan);
1103
1104         return 0;
1105 }
1106 #endif
1107
1108 static int nl80211_send_coalesce(struct sk_buff *msg,
1109                                  struct cfg80211_registered_device *rdev)
1110 {
1111         struct nl80211_coalesce_rule_support rule;
1112
1113         if (!rdev->wiphy.coalesce)
1114                 return 0;
1115
1116         rule.max_rules = rdev->wiphy.coalesce->n_rules;
1117         rule.max_delay = rdev->wiphy.coalesce->max_delay;
1118         rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1119         rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1120         rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1121         rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1122
1123         if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1124                 return -ENOBUFS;
1125
1126         return 0;
1127 }
1128
1129 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1130                                       struct ieee80211_supported_band *sband)
1131 {
1132         struct nlattr *nl_rates, *nl_rate;
1133         struct ieee80211_rate *rate;
1134         int i;
1135
1136         /* add HT info */
1137         if (sband->ht_cap.ht_supported &&
1138             (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1139                      sizeof(sband->ht_cap.mcs),
1140                      &sband->ht_cap.mcs) ||
1141              nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1142                          sband->ht_cap.cap) ||
1143              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1144                         sband->ht_cap.ampdu_factor) ||
1145              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1146                         sband->ht_cap.ampdu_density)))
1147                 return -ENOBUFS;
1148
1149         /* add VHT info */
1150         if (sband->vht_cap.vht_supported &&
1151             (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1152                      sizeof(sband->vht_cap.vht_mcs),
1153                      &sband->vht_cap.vht_mcs) ||
1154              nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1155                          sband->vht_cap.cap)))
1156                 return -ENOBUFS;
1157
1158         /* add bitrates */
1159         nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
1160         if (!nl_rates)
1161                 return -ENOBUFS;
1162
1163         for (i = 0; i < sband->n_bitrates; i++) {
1164                 nl_rate = nla_nest_start(msg, i);
1165                 if (!nl_rate)
1166                         return -ENOBUFS;
1167
1168                 rate = &sband->bitrates[i];
1169                 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1170                                 rate->bitrate))
1171                         return -ENOBUFS;
1172                 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1173                     nla_put_flag(msg,
1174                                  NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1175                         return -ENOBUFS;
1176
1177                 nla_nest_end(msg, nl_rate);
1178         }
1179
1180         nla_nest_end(msg, nl_rates);
1181
1182         return 0;
1183 }
1184
1185 static int
1186 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1187                          const struct ieee80211_txrx_stypes *mgmt_stypes)
1188 {
1189         u16 stypes;
1190         struct nlattr *nl_ftypes, *nl_ifs;
1191         enum nl80211_iftype ift;
1192         int i;
1193
1194         if (!mgmt_stypes)
1195                 return 0;
1196
1197         nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
1198         if (!nl_ifs)
1199                 return -ENOBUFS;
1200
1201         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1202                 nl_ftypes = nla_nest_start(msg, ift);
1203                 if (!nl_ftypes)
1204                         return -ENOBUFS;
1205                 i = 0;
1206                 stypes = mgmt_stypes[ift].tx;
1207                 while (stypes) {
1208                         if ((stypes & 1) &&
1209                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1210                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1211                                 return -ENOBUFS;
1212                         stypes >>= 1;
1213                         i++;
1214                 }
1215                 nla_nest_end(msg, nl_ftypes);
1216         }
1217
1218         nla_nest_end(msg, nl_ifs);
1219
1220         nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
1221         if (!nl_ifs)
1222                 return -ENOBUFS;
1223
1224         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1225                 nl_ftypes = nla_nest_start(msg, ift);
1226                 if (!nl_ftypes)
1227                         return -ENOBUFS;
1228                 i = 0;
1229                 stypes = mgmt_stypes[ift].rx;
1230                 while (stypes) {
1231                         if ((stypes & 1) &&
1232                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1233                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1234                                 return -ENOBUFS;
1235                         stypes >>= 1;
1236                         i++;
1237                 }
1238                 nla_nest_end(msg, nl_ftypes);
1239         }
1240         nla_nest_end(msg, nl_ifs);
1241
1242         return 0;
1243 }
1244
1245 struct nl80211_dump_wiphy_state {
1246         s64 filter_wiphy;
1247         long start;
1248         long split_start, band_start, chan_start;
1249         bool split;
1250 };
1251
1252 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
1253                               enum nl80211_commands cmd,
1254                               struct sk_buff *msg, u32 portid, u32 seq,
1255                               int flags, struct nl80211_dump_wiphy_state *state)
1256 {
1257         void *hdr;
1258         struct nlattr *nl_bands, *nl_band;
1259         struct nlattr *nl_freqs, *nl_freq;
1260         struct nlattr *nl_cmds;
1261         enum ieee80211_band band;
1262         struct ieee80211_channel *chan;
1263         int i;
1264         const struct ieee80211_txrx_stypes *mgmt_stypes =
1265                                 rdev->wiphy.mgmt_stypes;
1266         u32 features;
1267
1268         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
1269         if (!hdr)
1270                 return -ENOBUFS;
1271
1272         if (WARN_ON(!state))
1273                 return -EINVAL;
1274
1275         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
1276             nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
1277                            wiphy_name(&rdev->wiphy)) ||
1278             nla_put_u32(msg, NL80211_ATTR_GENERATION,
1279                         cfg80211_rdev_list_generation))
1280                 goto nla_put_failure;
1281
1282         if (cmd != NL80211_CMD_NEW_WIPHY)
1283                 goto finish;
1284
1285         switch (state->split_start) {
1286         case 0:
1287                 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
1288                                rdev->wiphy.retry_short) ||
1289                     nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
1290                                rdev->wiphy.retry_long) ||
1291                     nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
1292                                 rdev->wiphy.frag_threshold) ||
1293                     nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
1294                                 rdev->wiphy.rts_threshold) ||
1295                     nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
1296                                rdev->wiphy.coverage_class) ||
1297                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
1298                                rdev->wiphy.max_scan_ssids) ||
1299                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
1300                                rdev->wiphy.max_sched_scan_ssids) ||
1301                     nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
1302                                 rdev->wiphy.max_scan_ie_len) ||
1303                     nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
1304                                 rdev->wiphy.max_sched_scan_ie_len) ||
1305                     nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
1306                                rdev->wiphy.max_match_sets))
1307                         goto nla_put_failure;
1308
1309                 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
1310                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1311                         goto nla_put_failure;
1312                 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
1313                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
1314                         goto nla_put_failure;
1315                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
1316                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
1317                         goto nla_put_failure;
1318                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
1319                     nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
1320                         goto nla_put_failure;
1321                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
1322                     nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
1323                         goto nla_put_failure;
1324                 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
1325                     nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
1326                         goto nla_put_failure;
1327                 state->split_start++;
1328                 if (state->split)
1329                         break;
1330         case 1:
1331                 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
1332                             sizeof(u32) * rdev->wiphy.n_cipher_suites,
1333                             rdev->wiphy.cipher_suites))
1334                         goto nla_put_failure;
1335
1336                 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
1337                                rdev->wiphy.max_num_pmkids))
1338                         goto nla_put_failure;
1339
1340                 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
1341                     nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
1342                         goto nla_put_failure;
1343
1344                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
1345                                 rdev->wiphy.available_antennas_tx) ||
1346                     nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
1347                                 rdev->wiphy.available_antennas_rx))
1348                         goto nla_put_failure;
1349
1350                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
1351                     nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
1352                                 rdev->wiphy.probe_resp_offload))
1353                         goto nla_put_failure;
1354
1355                 if ((rdev->wiphy.available_antennas_tx ||
1356                      rdev->wiphy.available_antennas_rx) &&
1357                     rdev->ops->get_antenna) {
1358                         u32 tx_ant = 0, rx_ant = 0;
1359                         int res;
1360                         res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
1361                         if (!res) {
1362                                 if (nla_put_u32(msg,
1363                                                 NL80211_ATTR_WIPHY_ANTENNA_TX,
1364                                                 tx_ant) ||
1365                                     nla_put_u32(msg,
1366                                                 NL80211_ATTR_WIPHY_ANTENNA_RX,
1367                                                 rx_ant))
1368                                         goto nla_put_failure;
1369                         }
1370                 }
1371
1372                 state->split_start++;
1373                 if (state->split)
1374                         break;
1375         case 2:
1376                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
1377                                         rdev->wiphy.interface_modes))
1378                                 goto nla_put_failure;
1379                 state->split_start++;
1380                 if (state->split)
1381                         break;
1382         case 3:
1383                 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
1384                 if (!nl_bands)
1385                         goto nla_put_failure;
1386
1387                 for (band = state->band_start;
1388                      band < IEEE80211_NUM_BANDS; band++) {
1389                         struct ieee80211_supported_band *sband;
1390
1391                         sband = rdev->wiphy.bands[band];
1392
1393                         if (!sband)
1394                                 continue;
1395
1396                         nl_band = nla_nest_start(msg, band);
1397                         if (!nl_band)
1398                                 goto nla_put_failure;
1399
1400                         switch (state->chan_start) {
1401                         case 0:
1402                                 if (nl80211_send_band_rateinfo(msg, sband))
1403                                         goto nla_put_failure;
1404                                 state->chan_start++;
1405                                 if (state->split)
1406                                         break;
1407                         default:
1408                                 /* add frequencies */
1409                                 nl_freqs = nla_nest_start(
1410                                         msg, NL80211_BAND_ATTR_FREQS);
1411                                 if (!nl_freqs)
1412                                         goto nla_put_failure;
1413
1414                                 for (i = state->chan_start - 1;
1415                                      i < sband->n_channels;
1416                                      i++) {
1417                                         nl_freq = nla_nest_start(msg, i);
1418                                         if (!nl_freq)
1419                                                 goto nla_put_failure;
1420
1421                                         chan = &sband->channels[i];
1422
1423                                         if (nl80211_msg_put_channel(
1424                                                         msg, chan,
1425                                                         state->split))
1426                                                 goto nla_put_failure;
1427
1428                                         nla_nest_end(msg, nl_freq);
1429                                         if (state->split)
1430                                                 break;
1431                                 }
1432                                 if (i < sband->n_channels)
1433                                         state->chan_start = i + 2;
1434                                 else
1435                                         state->chan_start = 0;
1436                                 nla_nest_end(msg, nl_freqs);
1437                         }
1438
1439                         nla_nest_end(msg, nl_band);
1440
1441                         if (state->split) {
1442                                 /* start again here */
1443                                 if (state->chan_start)
1444                                         band--;
1445                                 break;
1446                         }
1447                 }
1448                 nla_nest_end(msg, nl_bands);
1449
1450                 if (band < IEEE80211_NUM_BANDS)
1451                         state->band_start = band + 1;
1452                 else
1453                         state->band_start = 0;
1454
1455                 /* if bands & channels are done, continue outside */
1456                 if (state->band_start == 0 && state->chan_start == 0)
1457                         state->split_start++;
1458                 if (state->split)
1459                         break;
1460         case 4:
1461                 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
1462                 if (!nl_cmds)
1463                         goto nla_put_failure;
1464
1465                 i = 0;
1466 #define CMD(op, n)                                                      \
1467                  do {                                                   \
1468                         if (rdev->ops->op) {                            \
1469                                 i++;                                    \
1470                                 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
1471                                         goto nla_put_failure;           \
1472                         }                                               \
1473                 } while (0)
1474
1475                 CMD(add_virtual_intf, NEW_INTERFACE);
1476                 CMD(change_virtual_intf, SET_INTERFACE);
1477                 CMD(add_key, NEW_KEY);
1478                 CMD(start_ap, START_AP);
1479                 CMD(add_station, NEW_STATION);
1480                 CMD(add_mpath, NEW_MPATH);
1481                 CMD(update_mesh_config, SET_MESH_CONFIG);
1482                 CMD(change_bss, SET_BSS);
1483                 CMD(auth, AUTHENTICATE);
1484                 CMD(assoc, ASSOCIATE);
1485                 CMD(deauth, DEAUTHENTICATE);
1486                 CMD(disassoc, DISASSOCIATE);
1487                 CMD(join_ibss, JOIN_IBSS);
1488                 CMD(join_mesh, JOIN_MESH);
1489                 CMD(set_pmksa, SET_PMKSA);
1490                 CMD(del_pmksa, DEL_PMKSA);
1491                 CMD(flush_pmksa, FLUSH_PMKSA);
1492                 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1493                         CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1494                 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1495                 CMD(mgmt_tx, FRAME);
1496                 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1497                 if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1498                         i++;
1499                         if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1500                                 goto nla_put_failure;
1501                 }
1502                 if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
1503                     rdev->ops->join_mesh) {
1504                         i++;
1505                         if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1506                                 goto nla_put_failure;
1507                 }
1508                 CMD(set_wds_peer, SET_WDS_PEER);
1509                 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1510                         CMD(tdls_mgmt, TDLS_MGMT);
1511                         CMD(tdls_oper, TDLS_OPER);
1512                 }
1513                 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
1514                         CMD(sched_scan_start, START_SCHED_SCAN);
1515                 CMD(probe_client, PROBE_CLIENT);
1516                 CMD(set_noack_map, SET_NOACK_MAP);
1517                 if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1518                         i++;
1519                         if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1520                                 goto nla_put_failure;
1521                 }
1522                 CMD(start_p2p_device, START_P2P_DEVICE);
1523                 CMD(set_mcast_rate, SET_MCAST_RATE);
1524 #ifdef CONFIG_NL80211_TESTMODE
1525                 CMD(testmode_cmd, TESTMODE);
1526 #endif
1527                 if (state->split) {
1528                         CMD(crit_proto_start, CRIT_PROTOCOL_START);
1529                         CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
1530                         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
1531                                 CMD(channel_switch, CHANNEL_SWITCH);
1532                         CMD(set_qos_map, SET_QOS_MAP);
1533                         if (rdev->wiphy.features &
1534                                         NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
1535                                 CMD(add_tx_ts, ADD_TX_TS);
1536                 }
1537                 /* add into the if now */
1538 #undef CMD
1539
1540                 if (rdev->ops->connect || rdev->ops->auth) {
1541                         i++;
1542                         if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1543                                 goto nla_put_failure;
1544                 }
1545
1546                 if (rdev->ops->disconnect || rdev->ops->deauth) {
1547                         i++;
1548                         if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1549                                 goto nla_put_failure;
1550                 }
1551
1552                 nla_nest_end(msg, nl_cmds);
1553                 state->split_start++;
1554                 if (state->split)
1555                         break;
1556         case 5:
1557                 if (rdev->ops->remain_on_channel &&
1558                     (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
1559                     nla_put_u32(msg,
1560                                 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
1561                                 rdev->wiphy.max_remain_on_channel_duration))
1562                         goto nla_put_failure;
1563
1564                 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
1565                     nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
1566                         goto nla_put_failure;
1567
1568                 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
1569                         goto nla_put_failure;
1570                 state->split_start++;
1571                 if (state->split)
1572                         break;
1573         case 6:
1574 #ifdef CONFIG_PM
1575                 if (nl80211_send_wowlan(msg, rdev, state->split))
1576                         goto nla_put_failure;
1577                 state->split_start++;
1578                 if (state->split)
1579                         break;
1580 #else
1581                 state->split_start++;
1582 #endif
1583         case 7:
1584                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1585                                         rdev->wiphy.software_iftypes))
1586                         goto nla_put_failure;
1587
1588                 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
1589                                                    state->split))
1590                         goto nla_put_failure;
1591
1592                 state->split_start++;
1593                 if (state->split)
1594                         break;
1595         case 8:
1596                 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
1597                     nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
1598                                 rdev->wiphy.ap_sme_capa))
1599                         goto nla_put_failure;
1600
1601                 features = rdev->wiphy.features;
1602                 /*
1603                  * We can only add the per-channel limit information if the
1604                  * dump is split, otherwise it makes it too big. Therefore
1605                  * only advertise it in that case.
1606                  */
1607                 if (state->split)
1608                         features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
1609                 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
1610                         goto nla_put_failure;
1611
1612                 if (rdev->wiphy.ht_capa_mod_mask &&
1613                     nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1614                             sizeof(*rdev->wiphy.ht_capa_mod_mask),
1615                             rdev->wiphy.ht_capa_mod_mask))
1616                         goto nla_put_failure;
1617
1618                 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
1619                     rdev->wiphy.max_acl_mac_addrs &&
1620                     nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
1621                                 rdev->wiphy.max_acl_mac_addrs))
1622                         goto nla_put_failure;
1623
1624                 /*
1625                  * Any information below this point is only available to
1626                  * applications that can deal with it being split. This
1627                  * helps ensure that newly added capabilities don't break
1628                  * older tools by overrunning their buffers.
1629                  *
1630                  * We still increment split_start so that in the split
1631                  * case we'll continue with more data in the next round,
1632                  * but break unconditionally so unsplit data stops here.
1633                  */
1634                 state->split_start++;
1635                 break;
1636         case 9:
1637                 if (rdev->wiphy.extended_capabilities &&
1638                     (nla_put(msg, NL80211_ATTR_EXT_CAPA,
1639                              rdev->wiphy.extended_capabilities_len,
1640                              rdev->wiphy.extended_capabilities) ||
1641                      nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1642                              rdev->wiphy.extended_capabilities_len,
1643                              rdev->wiphy.extended_capabilities_mask)))
1644                         goto nla_put_failure;
1645
1646                 if (rdev->wiphy.vht_capa_mod_mask &&
1647                     nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
1648                             sizeof(*rdev->wiphy.vht_capa_mod_mask),
1649                             rdev->wiphy.vht_capa_mod_mask))
1650                         goto nla_put_failure;
1651
1652                 state->split_start++;
1653                 break;
1654         case 10:
1655                 if (nl80211_send_coalesce(msg, rdev))
1656                         goto nla_put_failure;
1657
1658                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
1659                     (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
1660                      nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
1661                         goto nla_put_failure;
1662
1663                 if (rdev->wiphy.max_ap_assoc_sta &&
1664                     nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
1665                                 rdev->wiphy.max_ap_assoc_sta))
1666                         goto nla_put_failure;
1667
1668                 state->split_start++;
1669                 break;
1670         case 11:
1671                 if (rdev->wiphy.n_vendor_commands) {
1672                         const struct nl80211_vendor_cmd_info *info;
1673                         struct nlattr *nested;
1674
1675                         nested = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA);
1676                         if (!nested)
1677                                 goto nla_put_failure;
1678
1679                         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
1680                                 info = &rdev->wiphy.vendor_commands[i].info;
1681                                 if (nla_put(msg, i + 1, sizeof(*info), info))
1682                                         goto nla_put_failure;
1683                         }
1684                         nla_nest_end(msg, nested);
1685                 }
1686
1687                 if (rdev->wiphy.n_vendor_events) {
1688                         const struct nl80211_vendor_cmd_info *info;
1689                         struct nlattr *nested;
1690
1691                         nested = nla_nest_start(msg,
1692                                                 NL80211_ATTR_VENDOR_EVENTS);
1693                         if (!nested)
1694                                 goto nla_put_failure;
1695
1696                         for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
1697                                 info = &rdev->wiphy.vendor_events[i];
1698                                 if (nla_put(msg, i + 1, sizeof(*info), info))
1699                                         goto nla_put_failure;
1700                         }
1701                         nla_nest_end(msg, nested);
1702                 }
1703                 state->split_start++;
1704                 break;
1705         case 12:
1706                 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
1707                     nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
1708                                rdev->wiphy.max_num_csa_counters))
1709                         goto nla_put_failure;
1710
1711                 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
1712                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
1713                         goto nla_put_failure;
1714
1715                 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
1716                             sizeof(rdev->wiphy.ext_features),
1717                             rdev->wiphy.ext_features))
1718                         goto nla_put_failure;
1719
1720                 /* done */
1721                 state->split_start = 0;
1722                 break;
1723         }
1724  finish:
1725         genlmsg_end(msg, hdr);
1726         return 0;
1727
1728  nla_put_failure:
1729         genlmsg_cancel(msg, hdr);
1730         return -EMSGSIZE;
1731 }
1732
1733 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
1734                                     struct netlink_callback *cb,
1735                                     struct nl80211_dump_wiphy_state *state)
1736 {
1737         struct nlattr **tb = nl80211_fam.attrbuf;
1738         int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
1739                               tb, nl80211_fam.maxattr, nl80211_policy);
1740         /* ignore parse errors for backward compatibility */
1741         if (ret)
1742                 return 0;
1743
1744         state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
1745         if (tb[NL80211_ATTR_WIPHY])
1746                 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
1747         if (tb[NL80211_ATTR_WDEV])
1748                 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
1749         if (tb[NL80211_ATTR_IFINDEX]) {
1750                 struct net_device *netdev;
1751                 struct cfg80211_registered_device *rdev;
1752                 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
1753
1754                 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
1755                 if (!netdev)
1756                         return -ENODEV;
1757                 if (netdev->ieee80211_ptr) {
1758                         rdev = wiphy_to_rdev(
1759                                 netdev->ieee80211_ptr->wiphy);
1760                         state->filter_wiphy = rdev->wiphy_idx;
1761                 }
1762         }
1763
1764         return 0;
1765 }
1766
1767 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1768 {
1769         int idx = 0, ret;
1770         struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
1771         struct cfg80211_registered_device *rdev;
1772
1773         rtnl_lock();
1774         if (!state) {
1775                 state = kzalloc(sizeof(*state), GFP_KERNEL);
1776                 if (!state) {
1777                         rtnl_unlock();
1778                         return -ENOMEM;
1779                 }
1780                 state->filter_wiphy = -1;
1781                 ret = nl80211_dump_wiphy_parse(skb, cb, state);
1782                 if (ret) {
1783                         kfree(state);
1784                         rtnl_unlock();
1785                         return ret;
1786                 }
1787                 cb->args[0] = (long)state;
1788         }
1789
1790         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
1791                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
1792                         continue;
1793                 if (++idx <= state->start)
1794                         continue;
1795                 if (state->filter_wiphy != -1 &&
1796                     state->filter_wiphy != rdev->wiphy_idx)
1797                         continue;
1798                 /* attempt to fit multiple wiphy data chunks into the skb */
1799                 do {
1800                         ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
1801                                                  skb,
1802                                                  NETLINK_CB(cb->skb).portid,
1803                                                  cb->nlh->nlmsg_seq,
1804                                                  NLM_F_MULTI, state);
1805                         if (ret < 0) {
1806                                 /*
1807                                  * If sending the wiphy data didn't fit (ENOBUFS
1808                                  * or EMSGSIZE returned), this SKB is still
1809                                  * empty (so it's not too big because another
1810                                  * wiphy dataset is already in the skb) and
1811                                  * we've not tried to adjust the dump allocation
1812                                  * yet ... then adjust the alloc size to be
1813                                  * bigger, and return 1 but with the empty skb.
1814                                  * This results in an empty message being RX'ed
1815                                  * in userspace, but that is ignored.
1816                                  *
1817                                  * We can then retry with the larger buffer.
1818                                  */
1819                                 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
1820                                     !skb->len && !state->split &&
1821                                     cb->min_dump_alloc < 4096) {
1822                                         cb->min_dump_alloc = 4096;
1823                                         state->split_start = 0;
1824                                         rtnl_unlock();
1825                                         return 1;
1826                                 }
1827                                 idx--;
1828                                 break;
1829                         }
1830                 } while (state->split_start > 0);
1831                 break;
1832         }
1833         rtnl_unlock();
1834
1835         state->start = idx;
1836
1837         return skb->len;
1838 }
1839
1840 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
1841 {
1842         kfree((void *)cb->args[0]);
1843         return 0;
1844 }
1845
1846 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
1847 {
1848         struct sk_buff *msg;
1849         struct cfg80211_registered_device *rdev = info->user_ptr[0];
1850         struct nl80211_dump_wiphy_state state = {};
1851
1852         msg = nlmsg_new(4096, GFP_KERNEL);
1853         if (!msg)
1854                 return -ENOMEM;
1855
1856         if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
1857                                info->snd_portid, info->snd_seq, 0,
1858                                &state) < 0) {
1859                 nlmsg_free(msg);
1860                 return -ENOBUFS;
1861         }
1862
1863         return genlmsg_reply(msg, info);
1864 }
1865
1866 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
1867         [NL80211_TXQ_ATTR_QUEUE]                = { .type = NLA_U8 },
1868         [NL80211_TXQ_ATTR_TXOP]                 = { .type = NLA_U16 },
1869         [NL80211_TXQ_ATTR_CWMIN]                = { .type = NLA_U16 },
1870         [NL80211_TXQ_ATTR_CWMAX]                = { .type = NLA_U16 },
1871         [NL80211_TXQ_ATTR_AIFS]                 = { .type = NLA_U8 },
1872 };
1873
1874 static int parse_txq_params(struct nlattr *tb[],
1875                             struct ieee80211_txq_params *txq_params)
1876 {
1877         if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
1878             !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
1879             !tb[NL80211_TXQ_ATTR_AIFS])
1880                 return -EINVAL;
1881
1882         txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
1883         txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
1884         txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
1885         txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
1886         txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
1887
1888         if (txq_params->ac >= NL80211_NUM_ACS)
1889                 return -EINVAL;
1890
1891         return 0;
1892 }
1893
1894 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
1895 {
1896         /*
1897          * You can only set the channel explicitly for WDS interfaces,
1898          * all others have their channel managed via their respective
1899          * "establish a connection" command (connect, join, ...)
1900          *
1901          * For AP/GO and mesh mode, the channel can be set with the
1902          * channel userspace API, but is only stored and passed to the
1903          * low-level driver when the AP starts or the mesh is joined.
1904          * This is for backward compatibility, userspace can also give
1905          * the channel in the start-ap or join-mesh commands instead.
1906          *
1907          * Monitors are special as they are normally slaved to
1908          * whatever else is going on, so they have their own special
1909          * operation to set the monitor channel if possible.
1910          */
1911         return !wdev ||
1912                 wdev->iftype == NL80211_IFTYPE_AP ||
1913                 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
1914                 wdev->iftype == NL80211_IFTYPE_MONITOR ||
1915                 wdev->iftype == NL80211_IFTYPE_P2P_GO;
1916 }
1917
1918 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
1919                                  struct genl_info *info,
1920                                  struct cfg80211_chan_def *chandef)
1921 {
1922         u32 control_freq;
1923
1924         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
1925                 return -EINVAL;
1926
1927         control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
1928
1929         chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
1930         chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
1931         chandef->center_freq1 = control_freq;
1932         chandef->center_freq2 = 0;
1933
1934         /* Primary channel not allowed */
1935         if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED)
1936                 return -EINVAL;
1937
1938         if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
1939                 enum nl80211_channel_type chantype;
1940
1941                 chantype = nla_get_u32(
1942                                 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
1943
1944                 switch (chantype) {
1945                 case NL80211_CHAN_NO_HT:
1946                 case NL80211_CHAN_HT20:
1947                 case NL80211_CHAN_HT40PLUS:
1948                 case NL80211_CHAN_HT40MINUS:
1949                         cfg80211_chandef_create(chandef, chandef->chan,
1950                                                 chantype);
1951                         break;
1952                 default:
1953                         return -EINVAL;
1954                 }
1955         } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
1956                 chandef->width =
1957                         nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]);
1958                 if (info->attrs[NL80211_ATTR_CENTER_FREQ1])
1959                         chandef->center_freq1 =
1960                                 nla_get_u32(
1961                                         info->attrs[NL80211_ATTR_CENTER_FREQ1]);
1962                 if (info->attrs[NL80211_ATTR_CENTER_FREQ2])
1963                         chandef->center_freq2 =
1964                                 nla_get_u32(
1965                                         info->attrs[NL80211_ATTR_CENTER_FREQ2]);
1966         }
1967
1968         if (!cfg80211_chandef_valid(chandef))
1969                 return -EINVAL;
1970
1971         if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
1972                                      IEEE80211_CHAN_DISABLED))
1973                 return -EINVAL;
1974
1975         if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
1976              chandef->width == NL80211_CHAN_WIDTH_10) &&
1977             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ))
1978                 return -EINVAL;
1979
1980         return 0;
1981 }
1982
1983 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
1984                                  struct net_device *dev,
1985                                  struct genl_info *info)
1986 {
1987         struct cfg80211_chan_def chandef;
1988         int result;
1989         enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
1990         struct wireless_dev *wdev = NULL;
1991
1992         if (dev)
1993                 wdev = dev->ieee80211_ptr;
1994         if (!nl80211_can_set_dev_channel(wdev))
1995                 return -EOPNOTSUPP;
1996         if (wdev)
1997                 iftype = wdev->iftype;
1998
1999         result = nl80211_parse_chandef(rdev, info, &chandef);
2000         if (result)
2001                 return result;
2002
2003         switch (iftype) {
2004         case NL80211_IFTYPE_AP:
2005         case NL80211_IFTYPE_P2P_GO:
2006                 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
2007                                                    iftype)) {
2008                         result = -EINVAL;
2009                         break;
2010                 }
2011                 if (wdev->beacon_interval) {
2012                         if (!dev || !rdev->ops->set_ap_chanwidth ||
2013                             !(rdev->wiphy.features &
2014                               NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
2015                                 result = -EBUSY;
2016                                 break;
2017                         }
2018
2019                         /* Only allow dynamic channel width changes */
2020                         if (chandef.chan != wdev->preset_chandef.chan) {
2021                                 result = -EBUSY;
2022                                 break;
2023                         }
2024                         result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
2025                         if (result)
2026                                 break;
2027                 }
2028                 wdev->preset_chandef = chandef;
2029                 result = 0;
2030                 break;
2031         case NL80211_IFTYPE_MESH_POINT:
2032                 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
2033                 break;
2034         case NL80211_IFTYPE_MONITOR:
2035                 result = cfg80211_set_monitor_channel(rdev, &chandef);
2036                 break;
2037         default:
2038                 result = -EINVAL;
2039         }
2040
2041         return result;
2042 }
2043
2044 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
2045 {
2046         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2047         struct net_device *netdev = info->user_ptr[1];
2048
2049         return __nl80211_set_channel(rdev, netdev, info);
2050 }
2051
2052 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
2053 {
2054         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2055         struct net_device *dev = info->user_ptr[1];
2056         struct wireless_dev *wdev = dev->ieee80211_ptr;
2057         const u8 *bssid;
2058
2059         if (!info->attrs[NL80211_ATTR_MAC])
2060                 return -EINVAL;
2061
2062         if (netif_running(dev))
2063                 return -EBUSY;
2064
2065         if (!rdev->ops->set_wds_peer)
2066                 return -EOPNOTSUPP;
2067
2068         if (wdev->iftype != NL80211_IFTYPE_WDS)
2069                 return -EOPNOTSUPP;
2070
2071         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
2072         return rdev_set_wds_peer(rdev, dev, bssid);
2073 }
2074
2075
2076 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
2077 {
2078         struct cfg80211_registered_device *rdev;
2079         struct net_device *netdev = NULL;
2080         struct wireless_dev *wdev;
2081         int result = 0, rem_txq_params = 0;
2082         struct nlattr *nl_txq_params;
2083         u32 changed;
2084         u8 retry_short = 0, retry_long = 0;
2085         u32 frag_threshold = 0, rts_threshold = 0;
2086         u8 coverage_class = 0;
2087
2088         ASSERT_RTNL();
2089
2090         /*
2091          * Try to find the wiphy and netdev. Normally this
2092          * function shouldn't need the netdev, but this is
2093          * done for backward compatibility -- previously
2094          * setting the channel was done per wiphy, but now
2095          * it is per netdev. Previous userland like hostapd
2096          * also passed a netdev to set_wiphy, so that it is
2097          * possible to let that go to the right netdev!
2098          */
2099
2100         if (info->attrs[NL80211_ATTR_IFINDEX]) {
2101                 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
2102
2103                 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
2104                 if (netdev && netdev->ieee80211_ptr)
2105                         rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
2106                 else
2107                         netdev = NULL;
2108         }
2109
2110         if (!netdev) {
2111                 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
2112                                                   info->attrs);
2113                 if (IS_ERR(rdev))
2114                         return PTR_ERR(rdev);
2115                 wdev = NULL;
2116                 netdev = NULL;
2117                 result = 0;
2118         } else
2119                 wdev = netdev->ieee80211_ptr;
2120
2121         /*
2122          * end workaround code, by now the rdev is available
2123          * and locked, and wdev may or may not be NULL.
2124          */
2125
2126         if (info->attrs[NL80211_ATTR_WIPHY_NAME])
2127                 result = cfg80211_dev_rename(
2128                         rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
2129
2130         if (result)
2131                 return result;
2132
2133         if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
2134                 struct ieee80211_txq_params txq_params;
2135                 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
2136
2137                 if (!rdev->ops->set_txq_params)
2138                         return -EOPNOTSUPP;
2139
2140                 if (!netdev)
2141                         return -EINVAL;
2142
2143                 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2144                     netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2145                         return -EINVAL;
2146
2147                 if (!netif_running(netdev))
2148                         return -ENETDOWN;
2149
2150                 nla_for_each_nested(nl_txq_params,
2151                                     info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
2152                                     rem_txq_params) {
2153                         result = nla_parse(tb, NL80211_TXQ_ATTR_MAX,
2154                                            nla_data(nl_txq_params),
2155                                            nla_len(nl_txq_params),
2156                                            txq_params_policy);
2157                         if (result)
2158                                 return result;
2159                         result = parse_txq_params(tb, &txq_params);
2160                         if (result)
2161                                 return result;
2162
2163                         result = rdev_set_txq_params(rdev, netdev,
2164                                                      &txq_params);
2165                         if (result)
2166                                 return result;
2167                 }
2168         }
2169
2170         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
2171                 result = __nl80211_set_channel(
2172                         rdev,
2173                         nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
2174                         info);
2175                 if (result)
2176                         return result;
2177         }
2178
2179         if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
2180                 struct wireless_dev *txp_wdev = wdev;
2181                 enum nl80211_tx_power_setting type;
2182                 int idx, mbm = 0;
2183
2184                 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
2185                         txp_wdev = NULL;
2186
2187                 if (!rdev->ops->set_tx_power)
2188                         return -EOPNOTSUPP;
2189
2190                 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
2191                 type = nla_get_u32(info->attrs[idx]);
2192
2193                 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
2194                     (type != NL80211_TX_POWER_AUTOMATIC))
2195                         return -EINVAL;
2196
2197                 if (type != NL80211_TX_POWER_AUTOMATIC) {
2198                         idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
2199                         mbm = nla_get_u32(info->attrs[idx]);
2200                 }
2201
2202                 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
2203                 if (result)
2204                         return result;
2205         }
2206
2207         if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
2208             info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
2209                 u32 tx_ant, rx_ant;
2210                 if ((!rdev->wiphy.available_antennas_tx &&
2211                      !rdev->wiphy.available_antennas_rx) ||
2212                     !rdev->ops->set_antenna)
2213                         return -EOPNOTSUPP;
2214
2215                 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
2216                 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
2217
2218                 /* reject antenna configurations which don't match the
2219                  * available antenna masks, except for the "all" mask */
2220                 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
2221                     (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx)))
2222                         return -EINVAL;
2223
2224                 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
2225                 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
2226
2227                 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
2228                 if (result)
2229                         return result;
2230         }
2231
2232         changed = 0;
2233
2234         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
2235                 retry_short = nla_get_u8(
2236                         info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
2237                 if (retry_short == 0)
2238                         return -EINVAL;
2239
2240                 changed |= WIPHY_PARAM_RETRY_SHORT;
2241         }
2242
2243         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
2244                 retry_long = nla_get_u8(
2245                         info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
2246                 if (retry_long == 0)
2247                         return -EINVAL;
2248
2249                 changed |= WIPHY_PARAM_RETRY_LONG;
2250         }
2251
2252         if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
2253                 frag_threshold = nla_get_u32(
2254                         info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
2255                 if (frag_threshold < 256)
2256                         return -EINVAL;
2257
2258                 if (frag_threshold != (u32) -1) {
2259                         /*
2260                          * Fragments (apart from the last one) are required to
2261                          * have even length. Make the fragmentation code
2262                          * simpler by stripping LSB should someone try to use
2263                          * odd threshold value.
2264                          */
2265                         frag_threshold &= ~0x1;
2266                 }
2267                 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
2268         }
2269
2270         if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
2271                 rts_threshold = nla_get_u32(
2272                         info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
2273                 changed |= WIPHY_PARAM_RTS_THRESHOLD;
2274         }
2275
2276         if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
2277                 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK])
2278                         return -EINVAL;
2279
2280                 coverage_class = nla_get_u8(
2281                         info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
2282                 changed |= WIPHY_PARAM_COVERAGE_CLASS;
2283         }
2284
2285         if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
2286                 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION))
2287                         return -EOPNOTSUPP;
2288
2289                 changed |= WIPHY_PARAM_DYN_ACK;
2290         }
2291
2292         if (changed) {
2293                 u8 old_retry_short, old_retry_long;
2294                 u32 old_frag_threshold, old_rts_threshold;
2295                 u8 old_coverage_class;
2296
2297                 if (!rdev->ops->set_wiphy_params)
2298                         return -EOPNOTSUPP;
2299
2300                 old_retry_short = rdev->wiphy.retry_short;
2301                 old_retry_long = rdev->wiphy.retry_long;
2302                 old_frag_threshold = rdev->wiphy.frag_threshold;
2303                 old_rts_threshold = rdev->wiphy.rts_threshold;
2304                 old_coverage_class = rdev->wiphy.coverage_class;
2305
2306                 if (changed & WIPHY_PARAM_RETRY_SHORT)
2307                         rdev->wiphy.retry_short = retry_short;
2308                 if (changed & WIPHY_PARAM_RETRY_LONG)
2309                         rdev->wiphy.retry_long = retry_long;
2310                 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
2311                         rdev->wiphy.frag_threshold = frag_threshold;
2312                 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
2313                         rdev->wiphy.rts_threshold = rts_threshold;
2314                 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
2315                         rdev->wiphy.coverage_class = coverage_class;
2316
2317                 result = rdev_set_wiphy_params(rdev, changed);
2318                 if (result) {
2319                         rdev->wiphy.retry_short = old_retry_short;
2320                         rdev->wiphy.retry_long = old_retry_long;
2321                         rdev->wiphy.frag_threshold = old_frag_threshold;
2322                         rdev->wiphy.rts_threshold = old_rts_threshold;
2323                         rdev->wiphy.coverage_class = old_coverage_class;
2324                         return result;
2325                 }
2326         }
2327         return 0;
2328 }
2329
2330 static inline u64 wdev_id(struct wireless_dev *wdev)
2331 {
2332         return (u64)wdev->identifier |
2333                ((u64)wiphy_to_rdev(wdev->wiphy)->wiphy_idx << 32);
2334 }
2335
2336 static int nl80211_send_chandef(struct sk_buff *msg,
2337                                 const struct cfg80211_chan_def *chandef)
2338 {
2339         if (WARN_ON(!cfg80211_chandef_valid(chandef)))
2340                 return -EINVAL;
2341
2342         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
2343                         chandef->chan->center_freq))
2344                 return -ENOBUFS;
2345         switch (chandef->width) {
2346         case NL80211_CHAN_WIDTH_20_NOHT:
2347         case NL80211_CHAN_WIDTH_20:
2348         case NL80211_CHAN_WIDTH_40:
2349                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2350                                 cfg80211_get_chandef_type(chandef)))
2351                         return -ENOBUFS;
2352                 break;
2353         default:
2354                 break;
2355         }
2356         if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
2357                 return -ENOBUFS;
2358         if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
2359                 return -ENOBUFS;
2360         if (chandef->center_freq2 &&
2361             nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
2362                 return -ENOBUFS;
2363         return 0;
2364 }
2365
2366 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
2367                               struct cfg80211_registered_device *rdev,
2368                               struct wireless_dev *wdev, bool removal)
2369 {
2370         struct net_device *dev = wdev->netdev;
2371         u8 cmd = NL80211_CMD_NEW_INTERFACE;
2372         void *hdr;
2373
2374         if (removal)
2375                 cmd = NL80211_CMD_DEL_INTERFACE;
2376
2377         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
2378         if (!hdr)
2379                 return -1;
2380
2381         if (dev &&
2382             (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2383              nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
2384                 goto nla_put_failure;
2385
2386         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2387             nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
2388             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
2389             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
2390             nla_put_u32(msg, NL80211_ATTR_GENERATION,
2391                         rdev->devlist_generation ^
2392                         (cfg80211_rdev_list_generation << 2)))
2393                 goto nla_put_failure;
2394
2395         if (rdev->ops->get_channel) {
2396                 int ret;
2397                 struct cfg80211_chan_def chandef;
2398
2399                 ret = rdev_get_channel(rdev, wdev, &chandef);
2400                 if (ret == 0) {
2401                         if (nl80211_send_chandef(msg, &chandef))
2402                                 goto nla_put_failure;
2403                 }
2404         }
2405
2406         if (wdev->ssid_len) {
2407                 if (nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
2408                         goto nla_put_failure;
2409         }
2410
2411         genlmsg_end(msg, hdr);
2412         return 0;
2413
2414  nla_put_failure:
2415         genlmsg_cancel(msg, hdr);
2416         return -EMSGSIZE;
2417 }
2418
2419 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
2420 {
2421         int wp_idx = 0;
2422         int if_idx = 0;
2423         int wp_start = cb->args[0];
2424         int if_start = cb->args[1];
2425         struct cfg80211_registered_device *rdev;
2426         struct wireless_dev *wdev;
2427
2428         rtnl_lock();
2429         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2430                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2431                         continue;
2432                 if (wp_idx < wp_start) {
2433                         wp_idx++;
2434                         continue;
2435                 }
2436                 if_idx = 0;
2437
2438                 list_for_each_entry(wdev, &rdev->wdev_list, list) {
2439                         if (if_idx < if_start) {
2440                                 if_idx++;
2441                                 continue;
2442                         }
2443                         if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
2444                                                cb->nlh->nlmsg_seq, NLM_F_MULTI,
2445                                                rdev, wdev, false) < 0) {
2446                                 goto out;
2447                         }
2448                         if_idx++;
2449                 }
2450
2451                 wp_idx++;
2452         }
2453  out:
2454         rtnl_unlock();
2455
2456         cb->args[0] = wp_idx;
2457         cb->args[1] = if_idx;
2458
2459         return skb->len;
2460 }
2461
2462 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
2463 {
2464         struct sk_buff *msg;
2465         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2466         struct wireless_dev *wdev = info->user_ptr[1];
2467
2468         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2469         if (!msg)
2470                 return -ENOMEM;
2471
2472         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2473                                rdev, wdev, false) < 0) {
2474                 nlmsg_free(msg);
2475                 return -ENOBUFS;
2476         }
2477
2478         return genlmsg_reply(msg, info);
2479 }
2480
2481 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
2482         [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
2483         [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
2484         [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
2485         [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
2486         [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
2487         [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
2488 };
2489
2490 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
2491 {
2492         struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
2493         int flag;
2494
2495         *mntrflags = 0;
2496
2497         if (!nla)
2498                 return -EINVAL;
2499
2500         if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
2501                              nla, mntr_flags_policy))
2502                 return -EINVAL;
2503
2504         for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
2505                 if (flags[flag])
2506                         *mntrflags |= (1<<flag);
2507
2508         return 0;
2509 }
2510
2511 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
2512                                struct net_device *netdev, u8 use_4addr,
2513                                enum nl80211_iftype iftype)
2514 {
2515         if (!use_4addr) {
2516                 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
2517                         return -EBUSY;
2518                 return 0;
2519         }
2520
2521         switch (iftype) {
2522         case NL80211_IFTYPE_AP_VLAN:
2523                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
2524                         return 0;
2525                 break;
2526         case NL80211_IFTYPE_STATION:
2527                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
2528                         return 0;
2529                 break;
2530         default:
2531                 break;
2532         }
2533
2534         return -EOPNOTSUPP;
2535 }
2536
2537 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
2538 {
2539         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2540         struct vif_params params;
2541         int err;
2542         enum nl80211_iftype otype, ntype;
2543         struct net_device *dev = info->user_ptr[1];
2544         u32 _flags, *flags = NULL;
2545         bool change = false;
2546
2547         memset(&params, 0, sizeof(params));
2548
2549         otype = ntype = dev->ieee80211_ptr->iftype;
2550
2551         if (info->attrs[NL80211_ATTR_IFTYPE]) {
2552                 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2553                 if (otype != ntype)
2554                         change = true;
2555                 if (ntype > NL80211_IFTYPE_MAX)
2556                         return -EINVAL;
2557         }
2558
2559         if (info->attrs[NL80211_ATTR_MESH_ID]) {
2560                 struct wireless_dev *wdev = dev->ieee80211_ptr;
2561
2562                 if (ntype != NL80211_IFTYPE_MESH_POINT)
2563                         return -EINVAL;
2564                 if (netif_running(dev))
2565                         return -EBUSY;
2566
2567                 wdev_lock(wdev);
2568                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2569                              IEEE80211_MAX_MESH_ID_LEN);
2570                 wdev->mesh_id_up_len =
2571                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2572                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2573                        wdev->mesh_id_up_len);
2574                 wdev_unlock(wdev);
2575         }
2576
2577         if (info->attrs[NL80211_ATTR_4ADDR]) {
2578                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2579                 change = true;
2580                 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
2581                 if (err)
2582                         return err;
2583         } else {
2584                 params.use_4addr = -1;
2585         }
2586
2587         if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
2588                 if (ntype != NL80211_IFTYPE_MONITOR)
2589                         return -EINVAL;
2590                 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
2591                                           &_flags);
2592                 if (err)
2593                         return err;
2594
2595                 flags = &_flags;
2596                 change = true;
2597         }
2598
2599         if (flags && (*flags & MONITOR_FLAG_ACTIVE) &&
2600             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2601                 return -EOPNOTSUPP;
2602
2603         if (change)
2604                 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
2605         else
2606                 err = 0;
2607
2608         if (!err && params.use_4addr != -1)
2609                 dev->ieee80211_ptr->use_4addr = params.use_4addr;
2610
2611         return err;
2612 }
2613
2614 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
2615 {
2616         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2617         struct vif_params params;
2618         struct wireless_dev *wdev;
2619         struct sk_buff *msg, *event;
2620         int err;
2621         enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
2622         u32 flags;
2623
2624         /* to avoid failing a new interface creation due to pending removal */
2625         cfg80211_destroy_ifaces(rdev);
2626
2627         memset(&params, 0, sizeof(params));
2628
2629         if (!info->attrs[NL80211_ATTR_IFNAME])
2630                 return -EINVAL;
2631
2632         if (info->attrs[NL80211_ATTR_IFTYPE]) {
2633                 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2634                 if (type > NL80211_IFTYPE_MAX)
2635                         return -EINVAL;
2636         }
2637
2638         if (!rdev->ops->add_virtual_intf ||
2639             !(rdev->wiphy.interface_modes & (1 << type)))
2640                 return -EOPNOTSUPP;
2641
2642         if ((type == NL80211_IFTYPE_P2P_DEVICE ||
2643              rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
2644             info->attrs[NL80211_ATTR_MAC]) {
2645                 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
2646                            ETH_ALEN);
2647                 if (!is_valid_ether_addr(params.macaddr))
2648                         return -EADDRNOTAVAIL;
2649         }
2650
2651         if (info->attrs[NL80211_ATTR_4ADDR]) {
2652                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2653                 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
2654                 if (err)
2655                         return err;
2656         }
2657
2658         err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
2659                                   info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
2660                                   &flags);
2661
2662         if (!err && (flags & MONITOR_FLAG_ACTIVE) &&
2663             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2664                 return -EOPNOTSUPP;
2665
2666         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2667         if (!msg)
2668                 return -ENOMEM;
2669
2670         wdev = rdev_add_virtual_intf(rdev,
2671                                 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
2672                                 NET_NAME_USER, type, err ? NULL : &flags,
2673                                 &params);
2674         if (WARN_ON(!wdev)) {
2675                 nlmsg_free(msg);
2676                 return -EPROTO;
2677         } else if (IS_ERR(wdev)) {
2678                 nlmsg_free(msg);
2679                 return PTR_ERR(wdev);
2680         }
2681
2682         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
2683                 wdev->owner_nlportid = info->snd_portid;
2684
2685         switch (type) {
2686         case NL80211_IFTYPE_MESH_POINT:
2687                 if (!info->attrs[NL80211_ATTR_MESH_ID])
2688                         break;
2689                 wdev_lock(wdev);
2690                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2691                              IEEE80211_MAX_MESH_ID_LEN);
2692                 wdev->mesh_id_up_len =
2693                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2694                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2695                        wdev->mesh_id_up_len);
2696                 wdev_unlock(wdev);
2697                 break;
2698         case NL80211_IFTYPE_P2P_DEVICE:
2699                 /*
2700                  * P2P Device doesn't have a netdev, so doesn't go
2701                  * through the netdev notifier and must be added here
2702                  */
2703                 mutex_init(&wdev->mtx);
2704                 INIT_LIST_HEAD(&wdev->event_list);
2705                 spin_lock_init(&wdev->event_lock);
2706                 INIT_LIST_HEAD(&wdev->mgmt_registrations);
2707                 spin_lock_init(&wdev->mgmt_registrations_lock);
2708
2709                 wdev->identifier = ++rdev->wdev_id;
2710                 list_add_rcu(&wdev->list, &rdev->wdev_list);
2711                 rdev->devlist_generation++;
2712                 break;
2713         default:
2714                 break;
2715         }
2716
2717         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2718                                rdev, wdev, false) < 0) {
2719                 nlmsg_free(msg);
2720                 return -ENOBUFS;
2721         }
2722
2723         event = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2724         if (event) {
2725                 if (nl80211_send_iface(event, 0, 0, 0,
2726                                        rdev, wdev, false) < 0) {
2727                         nlmsg_free(event);
2728                         goto out;
2729                 }
2730
2731                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
2732                                         event, 0, NL80211_MCGRP_CONFIG,
2733                                         GFP_KERNEL);
2734         }
2735
2736 out:
2737         return genlmsg_reply(msg, info);
2738 }
2739
2740 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
2741 {
2742         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2743         struct wireless_dev *wdev = info->user_ptr[1];
2744         struct sk_buff *msg;
2745         int status;
2746
2747         if (!rdev->ops->del_virtual_intf)
2748                 return -EOPNOTSUPP;
2749
2750         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2751         if (msg && nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, true) < 0) {
2752                 nlmsg_free(msg);
2753                 msg = NULL;
2754         }
2755
2756         /*
2757          * If we remove a wireless device without a netdev then clear
2758          * user_ptr[1] so that nl80211_post_doit won't dereference it
2759          * to check if it needs to do dev_put(). Otherwise it crashes
2760          * since the wdev has been freed, unlike with a netdev where
2761          * we need the dev_put() for the netdev to really be freed.
2762          */
2763         if (!wdev->netdev)
2764                 info->user_ptr[1] = NULL;
2765
2766         status = rdev_del_virtual_intf(rdev, wdev);
2767         if (status >= 0 && msg)
2768                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
2769                                         msg, 0, NL80211_MCGRP_CONFIG,
2770                                         GFP_KERNEL);
2771         else
2772                 nlmsg_free(msg);
2773
2774         return status;
2775 }
2776
2777 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
2778 {
2779         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2780         struct net_device *dev = info->user_ptr[1];
2781         u16 noack_map;
2782
2783         if (!info->attrs[NL80211_ATTR_NOACK_MAP])
2784                 return -EINVAL;
2785
2786         if (!rdev->ops->set_noack_map)
2787                 return -EOPNOTSUPP;
2788
2789         noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
2790
2791         return rdev_set_noack_map(rdev, dev, noack_map);
2792 }
2793
2794 struct get_key_cookie {
2795         struct sk_buff *msg;
2796         int error;
2797         int idx;
2798 };
2799
2800 static void get_key_callback(void *c, struct key_params *params)
2801 {
2802         struct nlattr *key;
2803         struct get_key_cookie *cookie = c;
2804
2805         if ((params->key &&
2806              nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
2807                      params->key_len, params->key)) ||
2808             (params->seq &&
2809              nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
2810                      params->seq_len, params->seq)) ||
2811             (params->cipher &&
2812              nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
2813                          params->cipher)))
2814                 goto nla_put_failure;
2815
2816         key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
2817         if (!key)
2818                 goto nla_put_failure;
2819
2820         if ((params->key &&
2821              nla_put(cookie->msg, NL80211_KEY_DATA,
2822                      params->key_len, params->key)) ||
2823             (params->seq &&
2824              nla_put(cookie->msg, NL80211_KEY_SEQ,
2825                      params->seq_len, params->seq)) ||
2826             (params->cipher &&
2827              nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
2828                          params->cipher)))
2829                 goto nla_put_failure;
2830
2831         if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx))
2832                 goto nla_put_failure;
2833
2834         nla_nest_end(cookie->msg, key);
2835
2836         return;
2837  nla_put_failure:
2838         cookie->error = 1;
2839 }
2840
2841 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
2842 {
2843         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2844         int err;
2845         struct net_device *dev = info->user_ptr[1];
2846         u8 key_idx = 0;
2847         const u8 *mac_addr = NULL;
2848         bool pairwise;
2849         struct get_key_cookie cookie = {
2850                 .error = 0,
2851         };
2852         void *hdr;
2853         struct sk_buff *msg;
2854
2855         if (info->attrs[NL80211_ATTR_KEY_IDX])
2856                 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
2857
2858         if (key_idx > 5)
2859                 return -EINVAL;
2860
2861         if (info->attrs[NL80211_ATTR_MAC])
2862                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2863
2864         pairwise = !!mac_addr;
2865         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
2866                 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
2867                 if (kt >= NUM_NL80211_KEYTYPES)
2868                         return -EINVAL;
2869                 if (kt != NL80211_KEYTYPE_GROUP &&
2870                     kt != NL80211_KEYTYPE_PAIRWISE)
2871                         return -EINVAL;
2872                 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
2873         }
2874
2875         if (!rdev->ops->get_key)
2876                 return -EOPNOTSUPP;
2877
2878         if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2879                 return -ENOENT;
2880
2881         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2882         if (!msg)
2883                 return -ENOMEM;
2884
2885         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
2886                              NL80211_CMD_NEW_KEY);
2887         if (!hdr)
2888                 goto nla_put_failure;
2889
2890         cookie.msg = msg;
2891         cookie.idx = key_idx;
2892
2893         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2894             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
2895                 goto nla_put_failure;
2896         if (mac_addr &&
2897             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
2898                 goto nla_put_failure;
2899
2900         err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
2901                            get_key_callback);
2902
2903         if (err)
2904                 goto free_msg;
2905
2906         if (cookie.error)
2907                 goto nla_put_failure;
2908
2909         genlmsg_end(msg, hdr);
2910         return genlmsg_reply(msg, info);
2911
2912  nla_put_failure:
2913         err = -ENOBUFS;
2914  free_msg:
2915         nlmsg_free(msg);
2916         return err;
2917 }
2918
2919 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
2920 {
2921         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2922         struct key_parse key;
2923         int err;
2924         struct net_device *dev = info->user_ptr[1];
2925
2926         err = nl80211_parse_key(info, &key);
2927         if (err)
2928                 return err;
2929
2930         if (key.idx < 0)
2931                 return -EINVAL;
2932
2933         /* only support setting default key */
2934         if (!key.def && !key.defmgmt)
2935                 return -EINVAL;
2936
2937         wdev_lock(dev->ieee80211_ptr);
2938
2939         if (key.def) {
2940                 if (!rdev->ops->set_default_key) {
2941                         err = -EOPNOTSUPP;
2942                         goto out;
2943                 }
2944
2945                 err = nl80211_key_allowed(dev->ieee80211_ptr);
2946                 if (err)
2947                         goto out;
2948
2949                 err = rdev_set_default_key(rdev, dev, key.idx,
2950                                                  key.def_uni, key.def_multi);
2951
2952                 if (err)
2953                         goto out;
2954
2955 #ifdef CONFIG_CFG80211_WEXT
2956                 dev->ieee80211_ptr->wext.default_key = key.idx;
2957 #endif
2958         } else {
2959                 if (key.def_uni || !key.def_multi) {
2960                         err = -EINVAL;
2961                         goto out;
2962                 }
2963
2964                 if (!rdev->ops->set_default_mgmt_key) {
2965                         err = -EOPNOTSUPP;
2966                         goto out;
2967                 }
2968
2969                 err = nl80211_key_allowed(dev->ieee80211_ptr);
2970                 if (err)
2971                         goto out;
2972
2973                 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
2974                 if (err)
2975                         goto out;
2976
2977 #ifdef CONFIG_CFG80211_WEXT
2978                 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
2979 #endif
2980         }
2981
2982  out:
2983         wdev_unlock(dev->ieee80211_ptr);
2984
2985         return err;
2986 }
2987
2988 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
2989 {
2990         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2991         int err;
2992         struct net_device *dev = info->user_ptr[1];
2993         struct key_parse key;
2994         const u8 *mac_addr = NULL;
2995
2996         err = nl80211_parse_key(info, &key);
2997         if (err)
2998                 return err;
2999
3000         if (!key.p.key)
3001                 return -EINVAL;
3002
3003         if (info->attrs[NL80211_ATTR_MAC])
3004                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3005
3006         if (key.type == -1) {
3007                 if (mac_addr)
3008                         key.type = NL80211_KEYTYPE_PAIRWISE;
3009                 else
3010                         key.type = NL80211_KEYTYPE_GROUP;
3011         }
3012
3013         /* for now */
3014         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3015             key.type != NL80211_KEYTYPE_GROUP)
3016                 return -EINVAL;
3017
3018         if (!rdev->ops->add_key)
3019                 return -EOPNOTSUPP;
3020
3021         if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
3022                                            key.type == NL80211_KEYTYPE_PAIRWISE,
3023                                            mac_addr))
3024                 return -EINVAL;
3025
3026         wdev_lock(dev->ieee80211_ptr);
3027         err = nl80211_key_allowed(dev->ieee80211_ptr);
3028         if (!err)
3029                 err = rdev_add_key(rdev, dev, key.idx,
3030                                    key.type == NL80211_KEYTYPE_PAIRWISE,
3031                                     mac_addr, &key.p);
3032         wdev_unlock(dev->ieee80211_ptr);
3033
3034         return err;
3035 }
3036
3037 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
3038 {
3039         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3040         int err;
3041         struct net_device *dev = info->user_ptr[1];
3042         u8 *mac_addr = NULL;
3043         struct key_parse key;
3044
3045         err = nl80211_parse_key(info, &key);
3046         if (err)
3047                 return err;
3048
3049         if (info->attrs[NL80211_ATTR_MAC])
3050                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3051
3052         if (key.type == -1) {
3053                 if (mac_addr)
3054                         key.type = NL80211_KEYTYPE_PAIRWISE;
3055                 else
3056                         key.type = NL80211_KEYTYPE_GROUP;
3057         }
3058
3059         /* for now */
3060         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3061             key.type != NL80211_KEYTYPE_GROUP)
3062                 return -EINVAL;
3063
3064         if (!rdev->ops->del_key)
3065                 return -EOPNOTSUPP;
3066
3067         wdev_lock(dev->ieee80211_ptr);
3068         err = nl80211_key_allowed(dev->ieee80211_ptr);
3069
3070         if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
3071             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3072                 err = -ENOENT;
3073
3074         if (!err)
3075                 err = rdev_del_key(rdev, dev, key.idx,
3076                                    key.type == NL80211_KEYTYPE_PAIRWISE,
3077                                    mac_addr);
3078
3079 #ifdef CONFIG_CFG80211_WEXT
3080         if (!err) {
3081                 if (key.idx == dev->ieee80211_ptr->wext.default_key)
3082                         dev->ieee80211_ptr->wext.default_key = -1;
3083                 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
3084                         dev->ieee80211_ptr->wext.default_mgmt_key = -1;
3085         }
3086 #endif
3087         wdev_unlock(dev->ieee80211_ptr);
3088
3089         return err;
3090 }
3091
3092 /* This function returns an error or the number of nested attributes */
3093 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
3094 {
3095         struct nlattr *attr;
3096         int n_entries = 0, tmp;
3097
3098         nla_for_each_nested(attr, nl_attr, tmp) {
3099                 if (nla_len(attr) != ETH_ALEN)
3100                         return -EINVAL;
3101
3102                 n_entries++;
3103         }
3104
3105         return n_entries;
3106 }
3107
3108 /*
3109  * This function parses ACL information and allocates memory for ACL data.
3110  * On successful return, the calling function is responsible to free the
3111  * ACL buffer returned by this function.
3112  */
3113 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
3114                                                 struct genl_info *info)
3115 {
3116         enum nl80211_acl_policy acl_policy;
3117         struct nlattr *attr;
3118         struct cfg80211_acl_data *acl;
3119         int i = 0, n_entries, tmp;
3120
3121         if (!wiphy->max_acl_mac_addrs)
3122                 return ERR_PTR(-EOPNOTSUPP);
3123
3124         if (!info->attrs[NL80211_ATTR_ACL_POLICY])
3125                 return ERR_PTR(-EINVAL);
3126
3127         acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
3128         if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
3129             acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
3130                 return ERR_PTR(-EINVAL);
3131
3132         if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
3133                 return ERR_PTR(-EINVAL);
3134
3135         n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
3136         if (n_entries < 0)
3137                 return ERR_PTR(n_entries);
3138
3139         if (n_entries > wiphy->max_acl_mac_addrs)
3140                 return ERR_PTR(-ENOTSUPP);
3141
3142         acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries),
3143                       GFP_KERNEL);
3144         if (!acl)
3145                 return ERR_PTR(-ENOMEM);
3146
3147         nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
3148                 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
3149                 i++;
3150         }
3151
3152         acl->n_acl_entries = n_entries;
3153         acl->acl_policy = acl_policy;
3154
3155         return acl;
3156 }
3157
3158 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
3159 {
3160         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3161         struct net_device *dev = info->user_ptr[1];
3162         struct cfg80211_acl_data *acl;
3163         int err;
3164
3165         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3166             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3167                 return -EOPNOTSUPP;
3168
3169         if (!dev->ieee80211_ptr->beacon_interval)
3170                 return -EINVAL;
3171
3172         acl = parse_acl_data(&rdev->wiphy, info);
3173         if (IS_ERR(acl))
3174                 return PTR_ERR(acl);
3175
3176         err = rdev_set_mac_acl(rdev, dev, acl);
3177
3178         kfree(acl);
3179
3180         return err;
3181 }
3182
3183 static int nl80211_parse_beacon(struct nlattr *attrs[],
3184                                 struct cfg80211_beacon_data *bcn)
3185 {
3186         bool haveinfo = false;
3187
3188         if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) ||
3189             !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) ||
3190             !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
3191             !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP]))
3192                 return -EINVAL;
3193
3194         memset(bcn, 0, sizeof(*bcn));
3195
3196         if (attrs[NL80211_ATTR_BEACON_HEAD]) {
3197                 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
3198                 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
3199                 if (!bcn->head_len)
3200                         return -EINVAL;
3201                 haveinfo = true;
3202         }
3203
3204         if (attrs[NL80211_ATTR_BEACON_TAIL]) {
3205                 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
3206                 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
3207                 haveinfo = true;
3208         }
3209
3210         if (!haveinfo)
3211                 return -EINVAL;
3212
3213         if (attrs[NL80211_ATTR_IE]) {
3214                 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
3215                 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
3216         }
3217
3218         if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
3219                 bcn->proberesp_ies =
3220                         nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3221                 bcn->proberesp_ies_len =
3222                         nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3223         }
3224
3225         if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
3226                 bcn->assocresp_ies =
3227                         nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3228                 bcn->assocresp_ies_len =
3229                         nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3230         }
3231
3232         if (attrs[NL80211_ATTR_PROBE_RESP]) {
3233                 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
3234                 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
3235         }
3236
3237         return 0;
3238 }
3239
3240 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
3241                                    struct cfg80211_ap_settings *params)
3242 {
3243         struct wireless_dev *wdev;
3244         bool ret = false;
3245
3246         list_for_each_entry(wdev, &rdev->wdev_list, list) {
3247                 if (wdev->iftype != NL80211_IFTYPE_AP &&
3248                     wdev->iftype != NL80211_IFTYPE_P2P_GO)
3249                         continue;
3250
3251                 if (!wdev->preset_chandef.chan)
3252                         continue;
3253
3254                 params->chandef = wdev->preset_chandef;
3255                 ret = true;
3256                 break;
3257         }
3258
3259         return ret;
3260 }
3261
3262 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
3263                                     enum nl80211_auth_type auth_type,
3264                                     enum nl80211_commands cmd)
3265 {
3266         if (auth_type > NL80211_AUTHTYPE_MAX)
3267                 return false;
3268
3269         switch (cmd) {
3270         case NL80211_CMD_AUTHENTICATE:
3271                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
3272                     auth_type == NL80211_AUTHTYPE_SAE)
3273                         return false;
3274                 return true;
3275         case NL80211_CMD_CONNECT:
3276         case NL80211_CMD_START_AP:
3277                 /* SAE not supported yet */
3278                 if (auth_type == NL80211_AUTHTYPE_SAE)
3279                         return false;
3280                 return true;
3281         default:
3282                 return false;
3283         }
3284 }
3285
3286 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
3287 {
3288         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3289         struct net_device *dev = info->user_ptr[1];
3290         struct wireless_dev *wdev = dev->ieee80211_ptr;
3291         struct cfg80211_ap_settings params;
3292         int err;
3293
3294         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3295             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3296                 return -EOPNOTSUPP;
3297
3298         if (!rdev->ops->start_ap)
3299                 return -EOPNOTSUPP;
3300
3301         if (wdev->beacon_interval)
3302                 return -EALREADY;
3303
3304         memset(&params, 0, sizeof(params));
3305
3306         /* these are required for START_AP */
3307         if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
3308             !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
3309             !info->attrs[NL80211_ATTR_BEACON_HEAD])
3310                 return -EINVAL;
3311
3312         err = nl80211_parse_beacon(info->attrs, &params.beacon);
3313         if (err)
3314                 return err;
3315
3316         params.beacon_interval =
3317                 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3318         params.dtim_period =
3319                 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
3320
3321         err = cfg80211_validate_beacon_int(rdev, params.beacon_interval);
3322         if (err)
3323                 return err;
3324
3325         /*
3326          * In theory, some of these attributes should be required here
3327          * but since they were not used when the command was originally
3328          * added, keep them optional for old user space programs to let
3329          * them continue to work with drivers that do not need the
3330          * additional information -- drivers must check!
3331          */
3332         if (info->attrs[NL80211_ATTR_SSID]) {
3333                 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3334                 params.ssid_len =
3335                         nla_len(info->attrs[NL80211_ATTR_SSID]);
3336                 if (params.ssid_len == 0 ||
3337                     params.ssid_len > IEEE80211_MAX_SSID_LEN)
3338                         return -EINVAL;
3339         }
3340
3341         if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
3342                 params.hidden_ssid = nla_get_u32(
3343                         info->attrs[NL80211_ATTR_HIDDEN_SSID]);
3344                 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
3345                     params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
3346                     params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
3347                         return -EINVAL;
3348         }
3349
3350         params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
3351
3352         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
3353                 params.auth_type = nla_get_u32(
3354                         info->attrs[NL80211_ATTR_AUTH_TYPE]);
3355                 if (!nl80211_valid_auth_type(rdev, params.auth_type,
3356                                              NL80211_CMD_START_AP))
3357                         return -EINVAL;
3358         } else
3359                 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
3360
3361         err = nl80211_crypto_settings(rdev, info, &params.crypto,
3362                                       NL80211_MAX_NR_CIPHER_SUITES);
3363         if (err)
3364                 return err;
3365
3366         if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
3367                 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
3368                         return -EOPNOTSUPP;
3369                 params.inactivity_timeout = nla_get_u16(
3370                         info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
3371         }
3372
3373         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
3374                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3375                         return -EINVAL;
3376                 params.p2p_ctwindow =
3377                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
3378                 if (params.p2p_ctwindow > 127)
3379                         return -EINVAL;
3380                 if (params.p2p_ctwindow != 0 &&
3381                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
3382                         return -EINVAL;
3383         }
3384
3385         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
3386                 u8 tmp;
3387
3388                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3389                         return -EINVAL;
3390                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
3391                 if (tmp > 1)
3392                         return -EINVAL;
3393                 params.p2p_opp_ps = tmp;
3394                 if (params.p2p_opp_ps != 0 &&
3395                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
3396                         return -EINVAL;
3397         }
3398
3399         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3400                 err = nl80211_parse_chandef(rdev, info, &params.chandef);
3401                 if (err)
3402                         return err;
3403         } else if (wdev->preset_chandef.chan) {
3404                 params.chandef = wdev->preset_chandef;
3405         } else if (!nl80211_get_ap_channel(rdev, &params))
3406                 return -EINVAL;
3407
3408         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
3409                                            wdev->iftype))
3410                 return -EINVAL;
3411
3412         if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
3413                 params.acl = parse_acl_data(&rdev->wiphy, info);
3414                 if (IS_ERR(params.acl))
3415                         return PTR_ERR(params.acl);
3416         }
3417
3418         if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
3419                 params.smps_mode =
3420                         nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
3421                 switch (params.smps_mode) {
3422                 case NL80211_SMPS_OFF:
3423                         break;
3424                 case NL80211_SMPS_STATIC:
3425                         if (!(rdev->wiphy.features &
3426                               NL80211_FEATURE_STATIC_SMPS))
3427                                 return -EINVAL;
3428                         break;
3429                 case NL80211_SMPS_DYNAMIC:
3430                         if (!(rdev->wiphy.features &
3431                               NL80211_FEATURE_DYNAMIC_SMPS))
3432                                 return -EINVAL;
3433                         break;
3434                 default:
3435                         return -EINVAL;
3436                 }
3437         } else {
3438                 params.smps_mode = NL80211_SMPS_OFF;
3439         }
3440
3441         wdev_lock(wdev);
3442         err = rdev_start_ap(rdev, dev, &params);
3443         if (!err) {
3444                 wdev->preset_chandef = params.chandef;
3445                 wdev->beacon_interval = params.beacon_interval;
3446                 wdev->chandef = params.chandef;
3447                 wdev->ssid_len = params.ssid_len;
3448                 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
3449         }
3450         wdev_unlock(wdev);
3451
3452         kfree(params.acl);
3453
3454         return err;
3455 }
3456
3457 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
3458 {
3459         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3460         struct net_device *dev = info->user_ptr[1];
3461         struct wireless_dev *wdev = dev->ieee80211_ptr;
3462         struct cfg80211_beacon_data params;
3463         int err;
3464
3465         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3466             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3467                 return -EOPNOTSUPP;
3468
3469         if (!rdev->ops->change_beacon)
3470                 return -EOPNOTSUPP;
3471
3472         if (!wdev->beacon_interval)
3473                 return -EINVAL;
3474
3475         err = nl80211_parse_beacon(info->attrs, &params);
3476         if (err)
3477                 return err;
3478
3479         wdev_lock(wdev);
3480         err = rdev_change_beacon(rdev, dev, &params);
3481         wdev_unlock(wdev);
3482
3483         return err;
3484 }
3485
3486 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
3487 {
3488         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3489         struct net_device *dev = info->user_ptr[1];
3490
3491         return cfg80211_stop_ap(rdev, dev, false);
3492 }
3493
3494 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
3495         [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
3496         [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
3497         [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
3498         [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
3499         [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
3500         [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
3501 };
3502
3503 static int parse_station_flags(struct genl_info *info,
3504                                enum nl80211_iftype iftype,
3505                                struct station_parameters *params)
3506 {
3507         struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
3508         struct nlattr *nla;
3509         int flag;
3510
3511         /*
3512          * Try parsing the new attribute first so userspace
3513          * can specify both for older kernels.
3514          */
3515         nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
3516         if (nla) {
3517                 struct nl80211_sta_flag_update *sta_flags;
3518
3519                 sta_flags = nla_data(nla);
3520                 params->sta_flags_mask = sta_flags->mask;
3521                 params->sta_flags_set = sta_flags->set;
3522                 params->sta_flags_set &= params->sta_flags_mask;
3523                 if ((params->sta_flags_mask |
3524                      params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
3525                         return -EINVAL;
3526                 return 0;
3527         }
3528
3529         /* if present, parse the old attribute */
3530
3531         nla = info->attrs[NL80211_ATTR_STA_FLAGS];
3532         if (!nla)
3533                 return 0;
3534
3535         if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
3536                              nla, sta_flags_policy))
3537                 return -EINVAL;
3538
3539         /*
3540          * Only allow certain flags for interface types so that
3541          * other attributes are silently ignored. Remember that
3542          * this is backward compatibility code with old userspace
3543          * and shouldn't be hit in other cases anyway.
3544          */
3545         switch (iftype) {
3546         case NL80211_IFTYPE_AP:
3547         case NL80211_IFTYPE_AP_VLAN:
3548         case NL80211_IFTYPE_P2P_GO:
3549                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3550                                          BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3551                                          BIT(NL80211_STA_FLAG_WME) |
3552                                          BIT(NL80211_STA_FLAG_MFP);
3553                 break;
3554         case NL80211_IFTYPE_P2P_CLIENT:
3555         case NL80211_IFTYPE_STATION:
3556                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3557                                          BIT(NL80211_STA_FLAG_TDLS_PEER);
3558                 break;
3559         case NL80211_IFTYPE_MESH_POINT:
3560                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3561                                          BIT(NL80211_STA_FLAG_MFP) |
3562                                          BIT(NL80211_STA_FLAG_AUTHORIZED);
3563         default:
3564                 return -EINVAL;
3565         }
3566
3567         for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
3568                 if (flags[flag]) {
3569                         params->sta_flags_set |= (1<<flag);
3570
3571                         /* no longer support new API additions in old API */
3572                         if (flag > NL80211_STA_FLAG_MAX_OLD_API)
3573                                 return -EINVAL;
3574                 }
3575         }
3576
3577         return 0;
3578 }
3579
3580 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
3581                                  int attr)
3582 {
3583         struct nlattr *rate;
3584         u32 bitrate;
3585         u16 bitrate_compat;
3586         enum nl80211_attrs rate_flg;
3587
3588         rate = nla_nest_start(msg, attr);
3589         if (!rate)
3590                 return false;
3591
3592         /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
3593         bitrate = cfg80211_calculate_bitrate(info);
3594         /* report 16-bit bitrate only if we can */
3595         bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
3596         if (bitrate > 0 &&
3597             nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
3598                 return false;
3599         if (bitrate_compat > 0 &&
3600             nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
3601                 return false;
3602
3603         switch (info->bw) {
3604         case RATE_INFO_BW_5:
3605                 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
3606                 break;
3607         case RATE_INFO_BW_10:
3608                 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
3609                 break;
3610         default:
3611                 WARN_ON(1);
3612                 /* fall through */
3613         case RATE_INFO_BW_20:
3614                 rate_flg = 0;
3615                 break;
3616         case RATE_INFO_BW_40:
3617                 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
3618                 break;
3619         case RATE_INFO_BW_80:
3620                 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
3621                 break;
3622         case RATE_INFO_BW_160:
3623                 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
3624                 break;
3625         }
3626
3627         if (rate_flg && nla_put_flag(msg, rate_flg))
3628                 return false;
3629
3630         if (info->flags & RATE_INFO_FLAGS_MCS) {
3631                 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
3632                         return false;
3633                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3634                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3635                         return false;
3636         } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
3637                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
3638                         return false;
3639                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
3640                         return false;
3641                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3642                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3643                         return false;
3644         }
3645
3646         nla_nest_end(msg, rate);
3647         return true;
3648 }
3649
3650 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
3651                                int id)
3652 {
3653         void *attr;
3654         int i = 0;
3655
3656         if (!mask)
3657                 return true;
3658
3659         attr = nla_nest_start(msg, id);
3660         if (!attr)
3661                 return false;
3662
3663         for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
3664                 if (!(mask & BIT(i)))
3665                         continue;
3666
3667                 if (nla_put_u8(msg, i, signal[i]))
3668                         return false;
3669         }
3670
3671         nla_nest_end(msg, attr);
3672
3673         return true;
3674 }
3675
3676 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
3677                                 u32 seq, int flags,
3678                                 struct cfg80211_registered_device *rdev,
3679                                 struct net_device *dev,
3680                                 const u8 *mac_addr, struct station_info *sinfo)
3681 {
3682         void *hdr;
3683         struct nlattr *sinfoattr, *bss_param;
3684
3685         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
3686         if (!hdr)
3687                 return -1;
3688
3689         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3690             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
3691             nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
3692                 goto nla_put_failure;
3693
3694         sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
3695         if (!sinfoattr)
3696                 goto nla_put_failure;
3697
3698 #define PUT_SINFO(attr, memb, type) do {                                \
3699         if (sinfo->filled & BIT(NL80211_STA_INFO_ ## attr) &&           \
3700             nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr,            \
3701                              sinfo->memb))                              \
3702                 goto nla_put_failure;                                   \
3703         } while (0)
3704
3705         PUT_SINFO(CONNECTED_TIME, connected_time, u32);
3706         PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
3707
3708         if (sinfo->filled & (BIT(NL80211_STA_INFO_RX_BYTES) |
3709                              BIT(NL80211_STA_INFO_RX_BYTES64)) &&
3710             nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
3711                         (u32)sinfo->rx_bytes))
3712                 goto nla_put_failure;
3713
3714         if (sinfo->filled & (BIT(NL80211_STA_INFO_TX_BYTES) |
3715                              BIT(NL80211_STA_INFO_TX_BYTES64)) &&
3716             nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
3717                         (u32)sinfo->tx_bytes))
3718                 goto nla_put_failure;
3719
3720         PUT_SINFO(RX_BYTES64, rx_bytes, u64);
3721         PUT_SINFO(TX_BYTES64, tx_bytes, u64);
3722         PUT_SINFO(LLID, llid, u16);
3723         PUT_SINFO(PLID, plid, u16);
3724         PUT_SINFO(PLINK_STATE, plink_state, u8);
3725
3726         switch (rdev->wiphy.signal_type) {
3727         case CFG80211_SIGNAL_TYPE_MBM:
3728                 PUT_SINFO(SIGNAL, signal, u8);
3729                 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
3730                 break;
3731         default:
3732                 break;
3733         }
3734         if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL)) {
3735                 if (!nl80211_put_signal(msg, sinfo->chains,
3736                                         sinfo->chain_signal,
3737                                         NL80211_STA_INFO_CHAIN_SIGNAL))
3738                         goto nla_put_failure;
3739         }
3740         if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
3741                 if (!nl80211_put_signal(msg, sinfo->chains,
3742                                         sinfo->chain_signal_avg,
3743                                         NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
3744                         goto nla_put_failure;
3745         }
3746         if (sinfo->filled & BIT(NL80211_STA_INFO_TX_BITRATE)) {
3747                 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
3748                                           NL80211_STA_INFO_TX_BITRATE))
3749                         goto nla_put_failure;
3750         }
3751         if (sinfo->filled & BIT(NL80211_STA_INFO_RX_BITRATE)) {
3752                 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
3753                                           NL80211_STA_INFO_RX_BITRATE))
3754                         goto nla_put_failure;
3755         }
3756
3757         PUT_SINFO(RX_PACKETS, rx_packets, u32);
3758         PUT_SINFO(TX_PACKETS, tx_packets, u32);
3759         PUT_SINFO(TX_RETRIES, tx_retries, u32);
3760         PUT_SINFO(TX_FAILED, tx_failed, u32);
3761         PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
3762         PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
3763         PUT_SINFO(LOCAL_PM, local_pm, u32);
3764         PUT_SINFO(PEER_PM, peer_pm, u32);
3765         PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
3766
3767         if (sinfo->filled & BIT(NL80211_STA_INFO_BSS_PARAM)) {
3768                 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
3769                 if (!bss_param)
3770                         goto nla_put_failure;
3771
3772                 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
3773                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
3774                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
3775                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
3776                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
3777                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
3778                     nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
3779                                sinfo->bss_param.dtim_period) ||
3780                     nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
3781                                 sinfo->bss_param.beacon_interval))
3782                         goto nla_put_failure;
3783
3784                 nla_nest_end(msg, bss_param);
3785         }
3786         if ((sinfo->filled & BIT(NL80211_STA_INFO_STA_FLAGS)) &&
3787             nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
3788                     sizeof(struct nl80211_sta_flag_update),
3789                     &sinfo->sta_flags))
3790                 goto nla_put_failure;
3791
3792         PUT_SINFO(T_OFFSET, t_offset, u64);
3793         PUT_SINFO(RX_DROP_MISC, rx_dropped_misc, u64);
3794         PUT_SINFO(BEACON_RX, rx_beacon, u64);
3795         PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
3796
3797 #undef PUT_SINFO
3798
3799         if (sinfo->filled & BIT(NL80211_STA_INFO_TID_STATS)) {
3800                 struct nlattr *tidsattr;
3801                 int tid;
3802
3803                 tidsattr = nla_nest_start(msg, NL80211_STA_INFO_TID_STATS);
3804                 if (!tidsattr)
3805                         goto nla_put_failure;
3806
3807                 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
3808                         struct cfg80211_tid_stats *tidstats;
3809                         struct nlattr *tidattr;
3810
3811                         tidstats = &sinfo->pertid[tid];
3812
3813                         if (!tidstats->filled)
3814                                 continue;
3815
3816                         tidattr = nla_nest_start(msg, tid + 1);
3817                         if (!tidattr)
3818                                 goto nla_put_failure;
3819
3820 #define PUT_TIDVAL(attr, memb, type) do {                               \
3821         if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) &&       \
3822             nla_put_ ## type(msg, NL80211_TID_STATS_ ## attr,           \
3823                              tidstats->memb))                           \
3824                 goto nla_put_failure;                                   \
3825         } while (0)
3826
3827                         PUT_TIDVAL(RX_MSDU, rx_msdu, u64);
3828                         PUT_TIDVAL(TX_MSDU, tx_msdu, u64);
3829                         PUT_TIDVAL(TX_MSDU_RETRIES, tx_msdu_retries, u64);
3830                         PUT_TIDVAL(TX_MSDU_FAILED, tx_msdu_failed, u64);
3831
3832 #undef PUT_TIDVAL
3833                         nla_nest_end(msg, tidattr);
3834                 }
3835
3836                 nla_nest_end(msg, tidsattr);
3837         }
3838
3839         nla_nest_end(msg, sinfoattr);
3840
3841         if (sinfo->assoc_req_ies_len &&
3842             nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
3843                     sinfo->assoc_req_ies))
3844                 goto nla_put_failure;
3845
3846         genlmsg_end(msg, hdr);
3847         return 0;
3848
3849  nla_put_failure:
3850         genlmsg_cancel(msg, hdr);
3851         return -EMSGSIZE;
3852 }
3853
3854 static int nl80211_dump_station(struct sk_buff *skb,
3855                                 struct netlink_callback *cb)
3856 {
3857         struct station_info sinfo;
3858         struct cfg80211_registered_device *rdev;
3859         struct wireless_dev *wdev;
3860         u8 mac_addr[ETH_ALEN];
3861         int sta_idx = cb->args[2];
3862         int err;
3863
3864         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
3865         if (err)
3866                 return err;
3867
3868         if (!wdev->netdev) {
3869                 err = -EINVAL;
3870                 goto out_err;
3871         }
3872
3873         if (!rdev->ops->dump_station) {
3874                 err = -EOPNOTSUPP;
3875                 goto out_err;
3876         }
3877
3878         while (1) {
3879                 memset(&sinfo, 0, sizeof(sinfo));
3880                 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
3881                                         mac_addr, &sinfo);
3882                 if (err == -ENOENT)
3883                         break;
3884                 if (err)
3885                         goto out_err;
3886
3887                 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
3888                                 NETLINK_CB(cb->skb).portid,
3889                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3890                                 rdev, wdev->netdev, mac_addr,
3891                                 &sinfo) < 0)
3892                         goto out;
3893
3894                 sta_idx++;
3895         }
3896
3897
3898  out:
3899         cb->args[2] = sta_idx;
3900         err = skb->len;
3901  out_err:
3902         nl80211_finish_wdev_dump(rdev);
3903
3904         return err;
3905 }
3906
3907 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
3908 {
3909         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3910         struct net_device *dev = info->user_ptr[1];
3911         struct station_info sinfo;
3912         struct sk_buff *msg;
3913         u8 *mac_addr = NULL;
3914         int err;
3915
3916         memset(&sinfo, 0, sizeof(sinfo));
3917
3918         if (!info->attrs[NL80211_ATTR_MAC])
3919                 return -EINVAL;
3920
3921         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3922
3923         if (!rdev->ops->get_station)
3924                 return -EOPNOTSUPP;
3925
3926         err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
3927         if (err)
3928                 return err;
3929
3930         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3931         if (!msg)
3932                 return -ENOMEM;
3933
3934         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
3935                                  info->snd_portid, info->snd_seq, 0,
3936                                  rdev, dev, mac_addr, &sinfo) < 0) {
3937                 nlmsg_free(msg);
3938                 return -ENOBUFS;
3939         }
3940
3941         return genlmsg_reply(msg, info);
3942 }
3943
3944 int cfg80211_check_station_change(struct wiphy *wiphy,
3945                                   struct station_parameters *params,
3946                                   enum cfg80211_station_type statype)
3947 {
3948         if (params->listen_interval != -1)
3949                 return -EINVAL;
3950         if (params->aid &&
3951             !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3952                 return -EINVAL;
3953
3954         /* When you run into this, adjust the code below for the new flag */
3955         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
3956
3957         switch (statype) {
3958         case CFG80211_STA_MESH_PEER_KERNEL:
3959         case CFG80211_STA_MESH_PEER_USER:
3960                 /*
3961                  * No ignoring the TDLS flag here -- the userspace mesh
3962                  * code doesn't have the bug of including TDLS in the
3963                  * mask everywhere.
3964                  */
3965                 if (params->sta_flags_mask &
3966                                 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3967                                   BIT(NL80211_STA_FLAG_MFP) |
3968                                   BIT(NL80211_STA_FLAG_AUTHORIZED)))
3969                         return -EINVAL;
3970                 break;
3971         case CFG80211_STA_TDLS_PEER_SETUP:
3972         case CFG80211_STA_TDLS_PEER_ACTIVE:
3973                 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3974                         return -EINVAL;
3975                 /* ignore since it can't change */
3976                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3977                 break;
3978         default:
3979                 /* disallow mesh-specific things */
3980                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
3981                         return -EINVAL;
3982                 if (params->local_pm)
3983                         return -EINVAL;
3984                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
3985                         return -EINVAL;
3986         }
3987
3988         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
3989             statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
3990                 /* TDLS can't be set, ... */
3991                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
3992                         return -EINVAL;
3993                 /*
3994                  * ... but don't bother the driver with it. This works around
3995                  * a hostapd/wpa_supplicant issue -- it always includes the
3996                  * TLDS_PEER flag in the mask even for AP mode.
3997                  */
3998                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3999         }
4000
4001         if (statype != CFG80211_STA_TDLS_PEER_SETUP) {
4002                 /* reject other things that can't change */
4003                 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
4004                         return -EINVAL;
4005                 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
4006                         return -EINVAL;
4007                 if (params->supported_rates)
4008                         return -EINVAL;
4009                 if (params->ext_capab || params->ht_capa || params->vht_capa)
4010                         return -EINVAL;
4011         }
4012
4013         if (statype != CFG80211_STA_AP_CLIENT) {
4014                 if (params->vlan)
4015                         return -EINVAL;
4016         }
4017
4018         switch (statype) {
4019         case CFG80211_STA_AP_MLME_CLIENT:
4020                 /* Use this only for authorizing/unauthorizing a station */
4021                 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
4022                         return -EOPNOTSUPP;
4023                 break;
4024         case CFG80211_STA_AP_CLIENT:
4025                 /* accept only the listed bits */
4026                 if (params->sta_flags_mask &
4027                                 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4028                                   BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4029                                   BIT(NL80211_STA_FLAG_ASSOCIATED) |
4030                                   BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
4031                                   BIT(NL80211_STA_FLAG_WME) |
4032                                   BIT(NL80211_STA_FLAG_MFP)))
4033                         return -EINVAL;
4034
4035                 /* but authenticated/associated only if driver handles it */
4036                 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4037                     params->sta_flags_mask &
4038                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4039                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
4040                         return -EINVAL;
4041                 break;
4042         case CFG80211_STA_IBSS:
4043         case CFG80211_STA_AP_STA:
4044                 /* reject any changes other than AUTHORIZED */
4045                 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
4046                         return -EINVAL;
4047                 break;
4048         case CFG80211_STA_TDLS_PEER_SETUP:
4049                 /* reject any changes other than AUTHORIZED or WME */
4050                 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4051                                                BIT(NL80211_STA_FLAG_WME)))
4052                         return -EINVAL;
4053                 /* force (at least) rates when authorizing */
4054                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
4055                     !params->supported_rates)
4056                         return -EINVAL;
4057                 break;
4058         case CFG80211_STA_TDLS_PEER_ACTIVE:
4059                 /* reject any changes */
4060                 return -EINVAL;
4061         case CFG80211_STA_MESH_PEER_KERNEL:
4062                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
4063                         return -EINVAL;
4064                 break;
4065         case CFG80211_STA_MESH_PEER_USER:
4066                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION &&
4067                     params->plink_action != NL80211_PLINK_ACTION_BLOCK)
4068                         return -EINVAL;
4069                 break;
4070         }
4071
4072         return 0;
4073 }
4074 EXPORT_SYMBOL(cfg80211_check_station_change);
4075
4076 /*
4077  * Get vlan interface making sure it is running and on the right wiphy.
4078  */
4079 static struct net_device *get_vlan(struct genl_info *info,
4080                                    struct cfg80211_registered_device *rdev)
4081 {
4082         struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
4083         struct net_device *v;
4084         int ret;
4085
4086         if (!vlanattr)
4087                 return NULL;
4088
4089         v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
4090         if (!v)
4091                 return ERR_PTR(-ENODEV);
4092
4093         if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
4094                 ret = -EINVAL;
4095                 goto error;
4096         }
4097
4098         if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4099             v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4100             v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
4101                 ret = -EINVAL;
4102                 goto error;
4103         }
4104
4105         if (!netif_running(v)) {
4106                 ret = -ENETDOWN;
4107                 goto error;
4108         }
4109
4110         return v;
4111  error:
4112         dev_put(v);
4113         return ERR_PTR(ret);
4114 }
4115
4116 static const struct nla_policy
4117 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
4118         [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
4119         [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
4120 };
4121
4122 static int nl80211_parse_sta_wme(struct genl_info *info,
4123                                  struct station_parameters *params)
4124 {
4125         struct nlattr *tb[NL80211_STA_WME_MAX + 1];
4126         struct nlattr *nla;
4127         int err;
4128
4129         /* parse WME attributes if present */
4130         if (!info->attrs[NL80211_ATTR_STA_WME])
4131                 return 0;
4132
4133         nla = info->attrs[NL80211_ATTR_STA_WME];
4134         err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
4135                                nl80211_sta_wme_policy);
4136         if (err)
4137                 return err;
4138
4139         if (tb[NL80211_STA_WME_UAPSD_QUEUES])
4140                 params->uapsd_queues = nla_get_u8(
4141                         tb[NL80211_STA_WME_UAPSD_QUEUES]);
4142         if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
4143                 return -EINVAL;
4144
4145         if (tb[NL80211_STA_WME_MAX_SP])
4146                 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
4147
4148         if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
4149                 return -EINVAL;
4150
4151         params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
4152
4153         return 0;
4154 }
4155
4156 static int nl80211_parse_sta_channel_info(struct genl_info *info,
4157                                       struct station_parameters *params)
4158 {
4159         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
4160                 params->supported_channels =
4161                      nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4162                 params->supported_channels_len =
4163                      nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4164                 /*
4165                  * Need to include at least one (first channel, number of
4166                  * channels) tuple for each subband, and must have proper
4167                  * tuples for the rest of the data as well.
4168                  */
4169                 if (params->supported_channels_len < 2)
4170                         return -EINVAL;
4171                 if (params->supported_channels_len % 2)
4172                         return -EINVAL;
4173         }
4174
4175         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
4176                 params->supported_oper_classes =
4177                  nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4178                 params->supported_oper_classes_len =
4179                   nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4180                 /*
4181                  * The value of the Length field of the Supported Operating
4182                  * Classes element is between 2 and 253.
4183                  */
4184                 if (params->supported_oper_classes_len < 2 ||
4185                     params->supported_oper_classes_len > 253)
4186                         return -EINVAL;
4187         }
4188         return 0;
4189 }
4190
4191 static int nl80211_set_station_tdls(struct genl_info *info,
4192                                     struct station_parameters *params)
4193 {
4194         int err;
4195         /* Dummy STA entry gets updated once the peer capabilities are known */
4196         if (info->attrs[NL80211_ATTR_PEER_AID])
4197                 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4198         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4199                 params->ht_capa =
4200                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4201         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4202                 params->vht_capa =
4203                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4204
4205         err = nl80211_parse_sta_channel_info(info, params);
4206         if (err)
4207                 return err;
4208
4209         return nl80211_parse_sta_wme(info, params);
4210 }
4211
4212 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
4213 {
4214         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4215         struct net_device *dev = info->user_ptr[1];
4216         struct station_parameters params;
4217         u8 *mac_addr;
4218         int err;
4219
4220         memset(&params, 0, sizeof(params));
4221
4222         params.listen_interval = -1;
4223
4224         if (!rdev->ops->change_station)
4225                 return -EOPNOTSUPP;
4226
4227         if (info->attrs[NL80211_ATTR_STA_AID])
4228                 return -EINVAL;
4229
4230         if (!info->attrs[NL80211_ATTR_MAC])
4231                 return -EINVAL;
4232
4233         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4234
4235         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
4236                 params.supported_rates =
4237                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4238                 params.supported_rates_len =
4239                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4240         }
4241
4242         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4243                 params.capability =
4244                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4245                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4246         }
4247
4248         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4249                 params.ext_capab =
4250                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4251                 params.ext_capab_len =
4252                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4253         }
4254
4255         if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4256                 return -EINVAL;
4257
4258         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4259                 return -EINVAL;
4260
4261         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4262                 params.plink_action =
4263                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4264                 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4265                         return -EINVAL;
4266         }
4267
4268         if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
4269                 params.plink_state =
4270                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
4271                 if (params.plink_state >= NUM_NL80211_PLINK_STATES)
4272                         return -EINVAL;
4273                 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
4274         }
4275
4276         if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) {
4277                 enum nl80211_mesh_power_mode pm = nla_get_u32(
4278                         info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
4279
4280                 if (pm <= NL80211_MESH_POWER_UNKNOWN ||
4281                     pm > NL80211_MESH_POWER_MAX)
4282                         return -EINVAL;
4283
4284                 params.local_pm = pm;
4285         }
4286
4287         /* Include parameters for TDLS peer (will check later) */
4288         err = nl80211_set_station_tdls(info, &params);
4289         if (err)
4290                 return err;
4291
4292         params.vlan = get_vlan(info, rdev);
4293         if (IS_ERR(params.vlan))
4294                 return PTR_ERR(params.vlan);
4295
4296         switch (dev->ieee80211_ptr->iftype) {
4297         case NL80211_IFTYPE_AP:
4298         case NL80211_IFTYPE_AP_VLAN:
4299         case NL80211_IFTYPE_P2P_GO:
4300         case NL80211_IFTYPE_P2P_CLIENT:
4301         case NL80211_IFTYPE_STATION:
4302         case NL80211_IFTYPE_ADHOC:
4303         case NL80211_IFTYPE_MESH_POINT:
4304                 break;
4305         default:
4306                 err = -EOPNOTSUPP;
4307                 goto out_put_vlan;
4308         }
4309
4310         /* driver will call cfg80211_check_station_change() */
4311         err = rdev_change_station(rdev, dev, mac_addr, &params);
4312
4313  out_put_vlan:
4314         if (params.vlan)
4315                 dev_put(params.vlan);
4316
4317         return err;
4318 }
4319
4320 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
4321 {
4322         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4323         int err;
4324         struct net_device *dev = info->user_ptr[1];
4325         struct station_parameters params;
4326         u8 *mac_addr = NULL;
4327
4328         memset(&params, 0, sizeof(params));
4329
4330         if (!rdev->ops->add_station)
4331                 return -EOPNOTSUPP;
4332
4333         if (!info->attrs[NL80211_ATTR_MAC])
4334                 return -EINVAL;
4335
4336         if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4337                 return -EINVAL;
4338
4339         if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
4340                 return -EINVAL;
4341
4342         if (!info->attrs[NL80211_ATTR_STA_AID] &&
4343             !info->attrs[NL80211_ATTR_PEER_AID])
4344                 return -EINVAL;
4345
4346         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4347         params.supported_rates =
4348                 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4349         params.supported_rates_len =
4350                 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4351         params.listen_interval =
4352                 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4353
4354         if (info->attrs[NL80211_ATTR_PEER_AID])
4355                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4356         else
4357                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
4358         if (!params.aid || params.aid > IEEE80211_MAX_AID)
4359                 return -EINVAL;
4360
4361         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4362                 params.capability =
4363                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4364                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4365         }
4366
4367         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4368                 params.ext_capab =
4369                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4370                 params.ext_capab_len =
4371                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4372         }
4373
4374         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4375                 params.ht_capa =
4376                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4377
4378         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4379                 params.vht_capa =
4380                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4381
4382         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
4383                 params.opmode_notif_used = true;
4384                 params.opmode_notif =
4385                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
4386         }
4387
4388         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4389                 params.plink_action =
4390                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4391                 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4392                         return -EINVAL;
4393         }
4394
4395         err = nl80211_parse_sta_channel_info(info, &params);
4396         if (err)
4397                 return err;
4398
4399         err = nl80211_parse_sta_wme(info, &params);
4400         if (err)
4401                 return err;
4402
4403         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4404                 return -EINVAL;
4405
4406         /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT
4407          * as userspace might just pass through the capabilities from the IEs
4408          * directly, rather than enforcing this restriction and returning an
4409          * error in this case.
4410          */
4411         if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {
4412                 params.ht_capa = NULL;
4413                 params.vht_capa = NULL;
4414         }
4415
4416         /* When you run into this, adjust the code below for the new flag */
4417         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4418
4419         switch (dev->ieee80211_ptr->iftype) {
4420         case NL80211_IFTYPE_AP:
4421         case NL80211_IFTYPE_AP_VLAN:
4422         case NL80211_IFTYPE_P2P_GO:
4423                 /* ignore WME attributes if iface/sta is not capable */
4424                 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
4425                     !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
4426                         params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4427
4428                 /* TDLS peers cannot be added */
4429                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4430                     info->attrs[NL80211_ATTR_PEER_AID])
4431                         return -EINVAL;
4432                 /* but don't bother the driver with it */
4433                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4434
4435                 /* allow authenticated/associated only if driver handles it */
4436                 if (!(rdev->wiphy.features &
4437                                 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4438                     params.sta_flags_mask &
4439                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4440                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
4441                         return -EINVAL;
4442
4443                 /* must be last in here for error handling */
4444                 params.vlan = get_vlan(info, rdev);
4445                 if (IS_ERR(params.vlan))
4446                         return PTR_ERR(params.vlan);
4447                 break;
4448         case NL80211_IFTYPE_MESH_POINT:
4449                 /* ignore uAPSD data */
4450                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4451
4452                 /* associated is disallowed */
4453                 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
4454                         return -EINVAL;
4455                 /* TDLS peers cannot be added */
4456                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4457                     info->attrs[NL80211_ATTR_PEER_AID])
4458                         return -EINVAL;
4459                 break;
4460         case NL80211_IFTYPE_STATION:
4461         case NL80211_IFTYPE_P2P_CLIENT:
4462                 /* ignore uAPSD data */
4463                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4464
4465                 /* these are disallowed */
4466                 if (params.sta_flags_mask &
4467                                 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
4468                                  BIT(NL80211_STA_FLAG_AUTHENTICATED)))
4469                         return -EINVAL;
4470                 /* Only TDLS peers can be added */
4471                 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4472                         return -EINVAL;
4473                 /* Can only add if TDLS ... */
4474                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
4475                         return -EOPNOTSUPP;
4476                 /* ... with external setup is supported */
4477                 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
4478                         return -EOPNOTSUPP;
4479                 /*
4480                  * Older wpa_supplicant versions always mark the TDLS peer
4481                  * as authorized, but it shouldn't yet be.
4482                  */
4483                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
4484                 break;
4485         default:
4486                 return -EOPNOTSUPP;
4487         }
4488
4489         /* be aware of params.vlan when changing code here */
4490
4491         err = rdev_add_station(rdev, dev, mac_addr, &params);
4492
4493         if (params.vlan)
4494                 dev_put(params.vlan);
4495         return err;
4496 }
4497
4498 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
4499 {
4500         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4501         struct net_device *dev = info->user_ptr[1];
4502         struct station_del_parameters params;
4503
4504         memset(&params, 0, sizeof(params));
4505
4506         if (info->attrs[NL80211_ATTR_MAC])
4507                 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
4508
4509         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4510             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4511             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
4512             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4513                 return -EINVAL;
4514
4515         if (!rdev->ops->del_station)
4516                 return -EOPNOTSUPP;
4517
4518         if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
4519                 params.subtype =
4520                         nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
4521                 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
4522                     params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
4523                         return -EINVAL;
4524         } else {
4525                 /* Default to Deauthentication frame */
4526                 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
4527         }
4528
4529         if (info->attrs[NL80211_ATTR_REASON_CODE]) {
4530                 params.reason_code =
4531                         nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4532                 if (params.reason_code == 0)
4533                         return -EINVAL; /* 0 is reserved */
4534         } else {
4535                 /* Default to reason code 2 */
4536                 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
4537         }
4538
4539         return rdev_del_station(rdev, dev, &params);
4540 }
4541
4542 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
4543                                 int flags, struct net_device *dev,
4544                                 u8 *dst, u8 *next_hop,
4545                                 struct mpath_info *pinfo)
4546 {
4547         void *hdr;
4548         struct nlattr *pinfoattr;
4549
4550         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
4551         if (!hdr)
4552                 return -1;
4553
4554         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4555             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
4556             nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
4557             nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
4558                 goto nla_put_failure;
4559
4560         pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
4561         if (!pinfoattr)
4562                 goto nla_put_failure;
4563         if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
4564             nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
4565                         pinfo->frame_qlen))
4566                 goto nla_put_failure;
4567         if (((pinfo->filled & MPATH_INFO_SN) &&
4568              nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
4569             ((pinfo->filled & MPATH_INFO_METRIC) &&
4570              nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
4571                          pinfo->metric)) ||
4572             ((pinfo->filled & MPATH_INFO_EXPTIME) &&
4573              nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
4574                          pinfo->exptime)) ||
4575             ((pinfo->filled & MPATH_INFO_FLAGS) &&
4576              nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
4577                         pinfo->flags)) ||
4578             ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
4579              nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
4580                          pinfo->discovery_timeout)) ||
4581             ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
4582              nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
4583                         pinfo->discovery_retries)))
4584                 goto nla_put_failure;
4585
4586         nla_nest_end(msg, pinfoattr);
4587
4588         genlmsg_end(msg, hdr);
4589         return 0;
4590
4591  nla_put_failure:
4592         genlmsg_cancel(msg, hdr);
4593         return -EMSGSIZE;
4594 }
4595
4596 static int nl80211_dump_mpath(struct sk_buff *skb,
4597                               struct netlink_callback *cb)
4598 {
4599         struct mpath_info pinfo;
4600         struct cfg80211_registered_device *rdev;
4601         struct wireless_dev *wdev;
4602         u8 dst[ETH_ALEN];
4603         u8 next_hop[ETH_ALEN];
4604         int path_idx = cb->args[2];
4605         int err;
4606
4607         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4608         if (err)
4609                 return err;
4610
4611         if (!rdev->ops->dump_mpath) {
4612                 err = -EOPNOTSUPP;
4613                 goto out_err;
4614         }
4615
4616         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4617                 err = -EOPNOTSUPP;
4618                 goto out_err;
4619         }
4620
4621         while (1) {
4622                 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
4623                                       next_hop, &pinfo);
4624                 if (err == -ENOENT)
4625                         break;
4626                 if (err)
4627                         goto out_err;
4628
4629                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4630                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
4631                                        wdev->netdev, dst, next_hop,
4632                                        &pinfo) < 0)
4633                         goto out;
4634
4635                 path_idx++;
4636         }
4637
4638
4639  out:
4640         cb->args[2] = path_idx;
4641         err = skb->len;
4642  out_err:
4643         nl80211_finish_wdev_dump(rdev);
4644         return err;
4645 }
4646
4647 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
4648 {
4649         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4650         int err;
4651         struct net_device *dev = info->user_ptr[1];
4652         struct mpath_info pinfo;
4653         struct sk_buff *msg;
4654         u8 *dst = NULL;
4655         u8 next_hop[ETH_ALEN];
4656
4657         memset(&pinfo, 0, sizeof(pinfo));
4658
4659         if (!info->attrs[NL80211_ATTR_MAC])
4660                 return -EINVAL;
4661
4662         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4663
4664         if (!rdev->ops->get_mpath)
4665                 return -EOPNOTSUPP;
4666
4667         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4668                 return -EOPNOTSUPP;
4669
4670         err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
4671         if (err)
4672                 return err;
4673
4674         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4675         if (!msg)
4676                 return -ENOMEM;
4677
4678         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4679                                  dev, dst, next_hop, &pinfo) < 0) {
4680                 nlmsg_free(msg);
4681                 return -ENOBUFS;
4682         }
4683
4684         return genlmsg_reply(msg, info);
4685 }
4686
4687 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
4688 {
4689         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4690         struct net_device *dev = info->user_ptr[1];
4691         u8 *dst = NULL;
4692         u8 *next_hop = NULL;
4693
4694         if (!info->attrs[NL80211_ATTR_MAC])
4695                 return -EINVAL;
4696
4697         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4698                 return -EINVAL;
4699
4700         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4701         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4702
4703         if (!rdev->ops->change_mpath)
4704                 return -EOPNOTSUPP;
4705
4706         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4707                 return -EOPNOTSUPP;
4708
4709         return rdev_change_mpath(rdev, dev, dst, next_hop);
4710 }
4711
4712 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
4713 {
4714         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4715         struct net_device *dev = info->user_ptr[1];
4716         u8 *dst = NULL;
4717         u8 *next_hop = NULL;
4718
4719         if (!info->attrs[NL80211_ATTR_MAC])
4720                 return -EINVAL;
4721
4722         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4723                 return -EINVAL;
4724
4725         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4726         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4727
4728         if (!rdev->ops->add_mpath)
4729                 return -EOPNOTSUPP;
4730
4731         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4732                 return -EOPNOTSUPP;
4733
4734         return rdev_add_mpath(rdev, dev, dst, next_hop);
4735 }
4736
4737 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
4738 {
4739         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4740         struct net_device *dev = info->user_ptr[1];
4741         u8 *dst = NULL;
4742
4743         if (info->attrs[NL80211_ATTR_MAC])
4744                 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4745
4746         if (!rdev->ops->del_mpath)
4747                 return -EOPNOTSUPP;
4748
4749         return rdev_del_mpath(rdev, dev, dst);
4750 }
4751
4752 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
4753 {
4754         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4755         int err;
4756         struct net_device *dev = info->user_ptr[1];
4757         struct mpath_info pinfo;
4758         struct sk_buff *msg;
4759         u8 *dst = NULL;
4760         u8 mpp[ETH_ALEN];
4761
4762         memset(&pinfo, 0, sizeof(pinfo));
4763
4764         if (!info->attrs[NL80211_ATTR_MAC])
4765                 return -EINVAL;
4766
4767         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4768
4769         if (!rdev->ops->get_mpp)
4770                 return -EOPNOTSUPP;
4771
4772         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4773                 return -EOPNOTSUPP;
4774
4775         err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
4776         if (err)
4777                 return err;
4778
4779         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4780         if (!msg)
4781                 return -ENOMEM;
4782
4783         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4784                                dev, dst, mpp, &pinfo) < 0) {
4785                 nlmsg_free(msg);
4786                 return -ENOBUFS;
4787         }
4788
4789         return genlmsg_reply(msg, info);
4790 }
4791
4792 static int nl80211_dump_mpp(struct sk_buff *skb,
4793                             struct netlink_callback *cb)
4794 {
4795         struct mpath_info pinfo;
4796         struct cfg80211_registered_device *rdev;
4797         struct wireless_dev *wdev;
4798         u8 dst[ETH_ALEN];
4799         u8 mpp[ETH_ALEN];
4800         int path_idx = cb->args[2];
4801         int err;
4802
4803         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4804         if (err)
4805                 return err;
4806
4807         if (!rdev->ops->dump_mpp) {
4808                 err = -EOPNOTSUPP;
4809                 goto out_err;
4810         }
4811
4812         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4813                 err = -EOPNOTSUPP;
4814                 goto out_err;
4815         }
4816
4817         while (1) {
4818                 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
4819                                     mpp, &pinfo);
4820                 if (err == -ENOENT)
4821                         break;
4822                 if (err)
4823                         goto out_err;
4824
4825                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4826                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
4827                                        wdev->netdev, dst, mpp,
4828                                        &pinfo) < 0)
4829                         goto out;
4830
4831                 path_idx++;
4832         }
4833
4834  out:
4835         cb->args[2] = path_idx;
4836         err = skb->len;
4837  out_err:
4838         nl80211_finish_wdev_dump(rdev);
4839         return err;
4840 }
4841
4842 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
4843 {
4844         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4845         struct net_device *dev = info->user_ptr[1];
4846         struct wireless_dev *wdev = dev->ieee80211_ptr;
4847         struct bss_parameters params;
4848         int err;
4849
4850         memset(&params, 0, sizeof(params));
4851         /* default to not changing parameters */
4852         params.use_cts_prot = -1;
4853         params.use_short_preamble = -1;
4854         params.use_short_slot_time = -1;
4855         params.ap_isolate = -1;
4856         params.ht_opmode = -1;
4857         params.p2p_ctwindow = -1;
4858         params.p2p_opp_ps = -1;
4859
4860         if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
4861                 params.use_cts_prot =
4862                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
4863         if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
4864                 params.use_short_preamble =
4865                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
4866         if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
4867                 params.use_short_slot_time =
4868                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
4869         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
4870                 params.basic_rates =
4871                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4872                 params.basic_rates_len =
4873                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4874         }
4875         if (info->attrs[NL80211_ATTR_AP_ISOLATE])
4876                 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
4877         if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
4878                 params.ht_opmode =
4879                         nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
4880
4881         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
4882                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4883                         return -EINVAL;
4884                 params.p2p_ctwindow =
4885                         nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
4886                 if (params.p2p_ctwindow < 0)
4887                         return -EINVAL;
4888                 if (params.p2p_ctwindow != 0 &&
4889                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
4890                         return -EINVAL;
4891         }
4892
4893         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
4894                 u8 tmp;
4895
4896                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4897                         return -EINVAL;
4898                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
4899                 if (tmp > 1)
4900                         return -EINVAL;
4901                 params.p2p_opp_ps = tmp;
4902                 if (params.p2p_opp_ps &&
4903                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
4904                         return -EINVAL;
4905         }
4906
4907         if (!rdev->ops->change_bss)
4908                 return -EOPNOTSUPP;
4909
4910         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4911             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4912                 return -EOPNOTSUPP;
4913
4914         wdev_lock(wdev);
4915         err = rdev_change_bss(rdev, dev, &params);
4916         wdev_unlock(wdev);
4917
4918         return err;
4919 }
4920
4921 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
4922         [NL80211_ATTR_REG_RULE_FLAGS]           = { .type = NLA_U32 },
4923         [NL80211_ATTR_FREQ_RANGE_START]         = { .type = NLA_U32 },
4924         [NL80211_ATTR_FREQ_RANGE_END]           = { .type = NLA_U32 },
4925         [NL80211_ATTR_FREQ_RANGE_MAX_BW]        = { .type = NLA_U32 },
4926         [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]  = { .type = NLA_U32 },
4927         [NL80211_ATTR_POWER_RULE_MAX_EIRP]      = { .type = NLA_U32 },
4928         [NL80211_ATTR_DFS_CAC_TIME]             = { .type = NLA_U32 },
4929 };
4930
4931 static int parse_reg_rule(struct nlattr *tb[],
4932         struct ieee80211_reg_rule *reg_rule)
4933 {
4934         struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
4935         struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
4936
4937         if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
4938                 return -EINVAL;
4939         if (!tb[NL80211_ATTR_FREQ_RANGE_START])
4940                 return -EINVAL;
4941         if (!tb[NL80211_ATTR_FREQ_RANGE_END])
4942                 return -EINVAL;
4943         if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
4944                 return -EINVAL;
4945         if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
4946                 return -EINVAL;
4947
4948         reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
4949
4950         freq_range->start_freq_khz =
4951                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
4952         freq_range->end_freq_khz =
4953                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
4954         freq_range->max_bandwidth_khz =
4955                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
4956
4957         power_rule->max_eirp =
4958                 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
4959
4960         if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
4961                 power_rule->max_antenna_gain =
4962                         nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
4963
4964         if (tb[NL80211_ATTR_DFS_CAC_TIME])
4965                 reg_rule->dfs_cac_ms =
4966                         nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
4967
4968         return 0;
4969 }
4970
4971 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
4972 {
4973         char *data = NULL;
4974         bool is_indoor;
4975         enum nl80211_user_reg_hint_type user_reg_hint_type;
4976         u32 owner_nlportid;
4977
4978
4979         /*
4980          * You should only get this when cfg80211 hasn't yet initialized
4981          * completely when built-in to the kernel right between the time
4982          * window between nl80211_init() and regulatory_init(), if that is
4983          * even possible.
4984          */
4985         if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
4986                 return -EINPROGRESS;
4987
4988         if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
4989                 user_reg_hint_type =
4990                   nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
4991         else
4992                 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
4993
4994         switch (user_reg_hint_type) {
4995         case NL80211_USER_REG_HINT_USER:
4996         case NL80211_USER_REG_HINT_CELL_BASE:
4997                 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
4998                         return -EINVAL;
4999
5000                 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5001                 return regulatory_hint_user(data, user_reg_hint_type);
5002         case NL80211_USER_REG_HINT_INDOOR:
5003                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
5004                         owner_nlportid = info->snd_portid;
5005                         is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR];
5006                 } else {
5007                         owner_nlportid = 0;
5008                         is_indoor = true;
5009                 }
5010
5011                 return regulatory_hint_indoor(is_indoor, owner_nlportid);
5012         default:
5013                 return -EINVAL;
5014         }
5015 }
5016
5017 static int nl80211_get_mesh_config(struct sk_buff *skb,
5018                                    struct genl_info *info)
5019 {
5020         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5021         struct net_device *dev = info->user_ptr[1];
5022         struct wireless_dev *wdev = dev->ieee80211_ptr;
5023         struct mesh_config cur_params;
5024         int err = 0;
5025         void *hdr;
5026         struct nlattr *pinfoattr;
5027         struct sk_buff *msg;
5028
5029         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
5030                 return -EOPNOTSUPP;
5031
5032         if (!rdev->ops->get_mesh_config)
5033                 return -EOPNOTSUPP;
5034
5035         wdev_lock(wdev);
5036         /* If not connected, get default parameters */
5037         if (!wdev->mesh_id_len)
5038                 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
5039         else
5040                 err = rdev_get_mesh_config(rdev, dev, &cur_params);
5041         wdev_unlock(wdev);
5042
5043         if (err)
5044                 return err;
5045
5046         /* Draw up a netlink message to send back */
5047         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5048         if (!msg)
5049                 return -ENOMEM;
5050         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5051                              NL80211_CMD_GET_MESH_CONFIG);
5052         if (!hdr)
5053                 goto out;
5054         pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
5055         if (!pinfoattr)
5056                 goto nla_put_failure;
5057         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5058             nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
5059                         cur_params.dot11MeshRetryTimeout) ||
5060             nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5061                         cur_params.dot11MeshConfirmTimeout) ||
5062             nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
5063                         cur_params.dot11MeshHoldingTimeout) ||
5064             nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
5065                         cur_params.dot11MeshMaxPeerLinks) ||
5066             nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
5067                        cur_params.dot11MeshMaxRetries) ||
5068             nla_put_u8(msg, NL80211_MESHCONF_TTL,
5069                        cur_params.dot11MeshTTL) ||
5070             nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
5071                        cur_params.element_ttl) ||
5072             nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5073                        cur_params.auto_open_plinks) ||
5074             nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5075                         cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
5076             nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5077                        cur_params.dot11MeshHWMPmaxPREQretries) ||
5078             nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
5079                         cur_params.path_refresh_time) ||
5080             nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5081                         cur_params.min_discovery_timeout) ||
5082             nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5083                         cur_params.dot11MeshHWMPactivePathTimeout) ||
5084             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5085                         cur_params.dot11MeshHWMPpreqMinInterval) ||
5086             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5087                         cur_params.dot11MeshHWMPperrMinInterval) ||
5088             nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5089                         cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
5090             nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
5091                        cur_params.dot11MeshHWMPRootMode) ||
5092             nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5093                         cur_params.dot11MeshHWMPRannInterval) ||
5094             nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5095                        cur_params.dot11MeshGateAnnouncementProtocol) ||
5096             nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
5097                        cur_params.dot11MeshForwarding) ||
5098             nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
5099                         cur_params.rssi_threshold) ||
5100             nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
5101                         cur_params.ht_opmode) ||
5102             nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5103                         cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
5104             nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5105                         cur_params.dot11MeshHWMProotInterval) ||
5106             nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5107                         cur_params.dot11MeshHWMPconfirmationInterval) ||
5108             nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
5109                         cur_params.power_mode) ||
5110             nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
5111                         cur_params.dot11MeshAwakeWindowDuration) ||
5112             nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
5113                         cur_params.plink_timeout))
5114                 goto nla_put_failure;
5115         nla_nest_end(msg, pinfoattr);
5116         genlmsg_end(msg, hdr);
5117         return genlmsg_reply(msg, info);
5118
5119  nla_put_failure:
5120         genlmsg_cancel(msg, hdr);
5121  out:
5122         nlmsg_free(msg);
5123         return -ENOBUFS;
5124 }
5125
5126 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
5127         [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
5128         [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
5129         [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
5130         [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
5131         [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
5132         [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
5133         [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
5134         [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
5135         [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
5136         [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
5137         [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
5138         [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
5139         [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
5140         [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
5141         [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
5142         [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
5143         [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
5144         [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
5145         [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
5146         [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
5147         [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
5148         [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
5149         [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
5150         [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
5151         [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
5152         [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 },
5153         [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
5154         [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
5155 };
5156
5157 static const struct nla_policy
5158         nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
5159         [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
5160         [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
5161         [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
5162         [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
5163         [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
5164         [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
5165         [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
5166                                     .len = IEEE80211_MAX_DATA_LEN },
5167         [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
5168 };
5169
5170 static int nl80211_parse_mesh_config(struct genl_info *info,
5171                                      struct mesh_config *cfg,
5172                                      u32 *mask_out)
5173 {
5174         struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
5175         u32 mask = 0;
5176
5177 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \
5178 do {                                                                        \
5179         if (tb[attr]) {                                                     \
5180                 if (fn(tb[attr]) < min || fn(tb[attr]) > max)               \
5181                         return -EINVAL;                                     \
5182                 cfg->param = fn(tb[attr]);                                  \
5183                 mask |= (1 << (attr - 1));                                  \
5184         }                                                                   \
5185 } while (0)
5186
5187
5188         if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
5189                 return -EINVAL;
5190         if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
5191                              info->attrs[NL80211_ATTR_MESH_CONFIG],
5192                              nl80211_meshconf_params_policy))
5193                 return -EINVAL;
5194
5195         /* This makes sure that there aren't more than 32 mesh config
5196          * parameters (otherwise our bitfield scheme would not work.) */
5197         BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
5198
5199         /* Fill in the params struct */
5200         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255,
5201                                   mask, NL80211_MESHCONF_RETRY_TIMEOUT,
5202                                   nla_get_u16);
5203         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255,
5204                                   mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5205                                   nla_get_u16);
5206         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255,
5207                                   mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
5208                                   nla_get_u16);
5209         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255,
5210                                   mask, NL80211_MESHCONF_MAX_PEER_LINKS,
5211                                   nla_get_u16);
5212         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16,
5213                                   mask, NL80211_MESHCONF_MAX_RETRIES,
5214                                   nla_get_u8);
5215         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255,
5216                                   mask, NL80211_MESHCONF_TTL, nla_get_u8);
5217         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255,
5218                                   mask, NL80211_MESHCONF_ELEMENT_TTL,
5219                                   nla_get_u8);
5220         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1,
5221                                   mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5222                                   nla_get_u8);
5223         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
5224                                   1, 255, mask,
5225                                   NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5226                                   nla_get_u32);
5227         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255,
5228                                   mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5229                                   nla_get_u8);
5230         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535,
5231                                   mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
5232                                   nla_get_u32);
5233         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535,
5234                                   mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5235                                   nla_get_u16);
5236         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
5237                                   1, 65535, mask,
5238                                   NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5239                                   nla_get_u32);
5240         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
5241                                   1, 65535, mask,
5242                                   NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5243                                   nla_get_u16);
5244         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
5245                                   1, 65535, mask,
5246                                   NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5247                                   nla_get_u16);
5248         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5249                                   dot11MeshHWMPnetDiameterTraversalTime,
5250                                   1, 65535, mask,
5251                                   NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5252                                   nla_get_u16);
5253         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4,
5254                                   mask, NL80211_MESHCONF_HWMP_ROOTMODE,
5255                                   nla_get_u8);
5256         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535,
5257                                   mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5258                                   nla_get_u16);
5259         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5260                                   dot11MeshGateAnnouncementProtocol, 0, 1,
5261                                   mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5262                                   nla_get_u8);
5263         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1,
5264                                   mask, NL80211_MESHCONF_FORWARDING,
5265                                   nla_get_u8);
5266         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, -255, 0,
5267                                   mask, NL80211_MESHCONF_RSSI_THRESHOLD,
5268                                   nla_get_s32);
5269         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, ht_opmode, 0, 16,
5270                                   mask, NL80211_MESHCONF_HT_OPMODE,
5271                                   nla_get_u16);
5272         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
5273                                   1, 65535, mask,
5274                                   NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5275                                   nla_get_u32);
5276         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535,
5277                                   mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5278                                   nla_get_u16);
5279         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5280                                   dot11MeshHWMPconfirmationInterval,
5281                                   1, 65535, mask,
5282                                   NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5283                                   nla_get_u16);
5284         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode,
5285                                   NL80211_MESH_POWER_ACTIVE,
5286                                   NL80211_MESH_POWER_MAX,
5287                                   mask, NL80211_MESHCONF_POWER_MODE,
5288                                   nla_get_u32);
5289         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration,
5290                                   0, 65535, mask,
5291                                   NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
5292         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 0, 0xffffffff,
5293                                   mask, NL80211_MESHCONF_PLINK_TIMEOUT,
5294                                   nla_get_u32);
5295         if (mask_out)
5296                 *mask_out = mask;
5297
5298         return 0;
5299
5300 #undef FILL_IN_MESH_PARAM_IF_SET
5301 }
5302
5303 static int nl80211_parse_mesh_setup(struct genl_info *info,
5304                                      struct mesh_setup *setup)
5305 {
5306         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5307         struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
5308
5309         if (!info->attrs[NL80211_ATTR_MESH_SETUP])
5310                 return -EINVAL;
5311         if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
5312                              info->attrs[NL80211_ATTR_MESH_SETUP],
5313                              nl80211_mesh_setup_params_policy))
5314                 return -EINVAL;
5315
5316         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
5317                 setup->sync_method =
5318                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
5319                  IEEE80211_SYNC_METHOD_VENDOR :
5320                  IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
5321
5322         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
5323                 setup->path_sel_proto =
5324                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
5325                  IEEE80211_PATH_PROTOCOL_VENDOR :
5326                  IEEE80211_PATH_PROTOCOL_HWMP;
5327
5328         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
5329                 setup->path_metric =
5330                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
5331                  IEEE80211_PATH_METRIC_VENDOR :
5332                  IEEE80211_PATH_METRIC_AIRTIME;
5333
5334
5335         if (tb[NL80211_MESH_SETUP_IE]) {
5336                 struct nlattr *ieattr =
5337                         tb[NL80211_MESH_SETUP_IE];
5338                 if (!is_valid_ie_attr(ieattr))
5339                         return -EINVAL;
5340                 setup->ie = nla_data(ieattr);
5341                 setup->ie_len = nla_len(ieattr);
5342         }
5343         if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
5344             !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
5345                 return -EINVAL;
5346         setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
5347         setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
5348         setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
5349         if (setup->is_secure)
5350                 setup->user_mpm = true;
5351
5352         if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
5353                 if (!setup->user_mpm)
5354                         return -EINVAL;
5355                 setup->auth_id =
5356                         nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
5357         }
5358
5359         return 0;
5360 }
5361
5362 static int nl80211_update_mesh_config(struct sk_buff *skb,
5363                                       struct genl_info *info)
5364 {
5365         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5366         struct net_device *dev = info->user_ptr[1];
5367         struct wireless_dev *wdev = dev->ieee80211_ptr;
5368         struct mesh_config cfg;
5369         u32 mask;
5370         int err;
5371
5372         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
5373                 return -EOPNOTSUPP;
5374
5375         if (!rdev->ops->update_mesh_config)
5376                 return -EOPNOTSUPP;
5377
5378         err = nl80211_parse_mesh_config(info, &cfg, &mask);
5379         if (err)
5380                 return err;
5381
5382         wdev_lock(wdev);
5383         if (!wdev->mesh_id_len)
5384                 err = -ENOLINK;
5385
5386         if (!err)
5387                 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
5388
5389         wdev_unlock(wdev);
5390
5391         return err;
5392 }
5393
5394 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
5395                               struct sk_buff *msg)
5396 {
5397         struct nlattr *nl_reg_rules;
5398         unsigned int i;
5399
5400         if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
5401             (regdom->dfs_region &&
5402              nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
5403                 goto nla_put_failure;
5404
5405         nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
5406         if (!nl_reg_rules)
5407                 goto nla_put_failure;
5408
5409         for (i = 0; i < regdom->n_reg_rules; i++) {
5410                 struct nlattr *nl_reg_rule;
5411                 const struct ieee80211_reg_rule *reg_rule;
5412                 const struct ieee80211_freq_range *freq_range;
5413                 const struct ieee80211_power_rule *power_rule;
5414                 unsigned int max_bandwidth_khz;
5415
5416                 reg_rule = &regdom->reg_rules[i];
5417                 freq_range = &reg_rule->freq_range;
5418                 power_rule = &reg_rule->power_rule;
5419
5420                 nl_reg_rule = nla_nest_start(msg, i);
5421                 if (!nl_reg_rule)
5422                         goto nla_put_failure;
5423
5424                 max_bandwidth_khz = freq_range->max_bandwidth_khz;
5425                 if (!max_bandwidth_khz)
5426                         max_bandwidth_khz = reg_get_max_bandwidth(regdom,
5427                                                                   reg_rule);
5428
5429                 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
5430                                 reg_rule->flags) ||
5431                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
5432                                 freq_range->start_freq_khz) ||
5433                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
5434                                 freq_range->end_freq_khz) ||
5435                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
5436                                 max_bandwidth_khz) ||
5437                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
5438                                 power_rule->max_antenna_gain) ||
5439                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
5440                                 power_rule->max_eirp) ||
5441                     nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
5442                                 reg_rule->dfs_cac_ms))
5443                         goto nla_put_failure;
5444
5445                 nla_nest_end(msg, nl_reg_rule);
5446         }
5447
5448         nla_nest_end(msg, nl_reg_rules);
5449         return 0;
5450
5451 nla_put_failure:
5452         return -EMSGSIZE;
5453 }
5454
5455 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
5456 {
5457         const struct ieee80211_regdomain *regdom = NULL;
5458         struct cfg80211_registered_device *rdev;
5459         struct wiphy *wiphy = NULL;
5460         struct sk_buff *msg;
5461         void *hdr;
5462
5463         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5464         if (!msg)
5465                 return -ENOBUFS;
5466
5467         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5468                              NL80211_CMD_GET_REG);
5469         if (!hdr)
5470                 goto put_failure;
5471
5472         if (info->attrs[NL80211_ATTR_WIPHY]) {
5473                 bool self_managed;
5474
5475                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
5476                 if (IS_ERR(rdev)) {
5477                         nlmsg_free(msg);
5478                         return PTR_ERR(rdev);
5479                 }
5480
5481                 wiphy = &rdev->wiphy;
5482                 self_managed = wiphy->regulatory_flags &
5483                                REGULATORY_WIPHY_SELF_MANAGED;
5484                 regdom = get_wiphy_regdom(wiphy);
5485
5486                 /* a self-managed-reg device must have a private regdom */
5487                 if (WARN_ON(!regdom && self_managed)) {
5488                         nlmsg_free(msg);
5489                         return -EINVAL;
5490                 }
5491
5492                 if (regdom &&
5493                     nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
5494                         goto nla_put_failure;
5495         }
5496
5497         if (!wiphy && reg_last_request_cell_base() &&
5498             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
5499                         NL80211_USER_REG_HINT_CELL_BASE))
5500                 goto nla_put_failure;
5501
5502         rcu_read_lock();
5503
5504         if (!regdom)
5505                 regdom = rcu_dereference(cfg80211_regdomain);
5506
5507         if (nl80211_put_regdom(regdom, msg))
5508                 goto nla_put_failure_rcu;
5509
5510         rcu_read_unlock();
5511
5512         genlmsg_end(msg, hdr);
5513         return genlmsg_reply(msg, info);
5514
5515 nla_put_failure_rcu:
5516         rcu_read_unlock();
5517 nla_put_failure:
5518         genlmsg_cancel(msg, hdr);
5519 put_failure:
5520         nlmsg_free(msg);
5521         return -EMSGSIZE;
5522 }
5523
5524 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
5525                                u32 seq, int flags, struct wiphy *wiphy,
5526                                const struct ieee80211_regdomain *regdom)
5527 {
5528         void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
5529                                    NL80211_CMD_GET_REG);
5530
5531         if (!hdr)
5532                 return -1;
5533
5534         genl_dump_check_consistent(cb, hdr, &nl80211_fam);
5535
5536         if (nl80211_put_regdom(regdom, msg))
5537                 goto nla_put_failure;
5538
5539         if (!wiphy && reg_last_request_cell_base() &&
5540             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
5541                         NL80211_USER_REG_HINT_CELL_BASE))
5542                 goto nla_put_failure;
5543
5544         if (wiphy &&
5545             nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
5546                 goto nla_put_failure;
5547
5548         if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
5549             nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
5550                 goto nla_put_failure;
5551
5552         genlmsg_end(msg, hdr);
5553         return 0;
5554
5555 nla_put_failure:
5556         genlmsg_cancel(msg, hdr);
5557         return -EMSGSIZE;
5558 }
5559
5560 static int nl80211_get_reg_dump(struct sk_buff *skb,
5561                                 struct netlink_callback *cb)
5562 {
5563         const struct ieee80211_regdomain *regdom = NULL;
5564         struct cfg80211_registered_device *rdev;
5565         int err, reg_idx, start = cb->args[2];
5566
5567         rtnl_lock();
5568
5569         if (cfg80211_regdomain && start == 0) {
5570                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
5571                                           NLM_F_MULTI, NULL,
5572                                           rtnl_dereference(cfg80211_regdomain));
5573                 if (err < 0)
5574                         goto out_err;
5575         }
5576
5577         /* the global regdom is idx 0 */
5578         reg_idx = 1;
5579         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
5580                 regdom = get_wiphy_regdom(&rdev->wiphy);
5581                 if (!regdom)
5582                         continue;
5583
5584                 if (++reg_idx <= start)
5585                         continue;
5586
5587                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
5588                                           NLM_F_MULTI, &rdev->wiphy, regdom);
5589                 if (err < 0) {
5590                         reg_idx--;
5591                         break;
5592                 }
5593         }
5594
5595         cb->args[2] = reg_idx;
5596         err = skb->len;
5597 out_err:
5598         rtnl_unlock();
5599         return err;
5600 }
5601
5602 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
5603 {
5604         struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
5605         struct nlattr *nl_reg_rule;
5606         char *alpha2;
5607         int rem_reg_rules, r;
5608         u32 num_rules = 0, rule_idx = 0, size_of_regd;
5609         enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
5610         struct ieee80211_regdomain *rd;
5611
5612         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
5613                 return -EINVAL;
5614
5615         if (!info->attrs[NL80211_ATTR_REG_RULES])
5616                 return -EINVAL;
5617
5618         alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5619
5620         if (info->attrs[NL80211_ATTR_DFS_REGION])
5621                 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
5622
5623         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5624                             rem_reg_rules) {
5625                 num_rules++;
5626                 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
5627                         return -EINVAL;
5628         }
5629
5630         if (!reg_is_valid_request(alpha2))
5631                 return -EINVAL;
5632
5633         size_of_regd = sizeof(struct ieee80211_regdomain) +
5634                        num_rules * sizeof(struct ieee80211_reg_rule);
5635
5636         rd = kzalloc(size_of_regd, GFP_KERNEL);
5637         if (!rd)
5638                 return -ENOMEM;
5639
5640         rd->n_reg_rules = num_rules;
5641         rd->alpha2[0] = alpha2[0];
5642         rd->alpha2[1] = alpha2[1];
5643
5644         /*
5645          * Disable DFS master mode if the DFS region was
5646          * not supported or known on this kernel.
5647          */
5648         if (reg_supported_dfs_region(dfs_region))
5649                 rd->dfs_region = dfs_region;
5650
5651         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5652                             rem_reg_rules) {
5653                 r = nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
5654                               nla_data(nl_reg_rule), nla_len(nl_reg_rule),
5655                               reg_rule_policy);
5656                 if (r)
5657                         goto bad_reg;
5658                 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
5659                 if (r)
5660                         goto bad_reg;
5661
5662                 rule_idx++;
5663
5664                 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
5665                         r = -EINVAL;
5666                         goto bad_reg;
5667                 }
5668         }
5669
5670         r = set_regdom(rd, REGD_SOURCE_CRDA);
5671         /* set_regdom took ownership */
5672         rd = NULL;
5673
5674  bad_reg:
5675         kfree(rd);
5676         return r;
5677 }
5678
5679 static int validate_scan_freqs(struct nlattr *freqs)
5680 {
5681         struct nlattr *attr1, *attr2;
5682         int n_channels = 0, tmp1, tmp2;
5683
5684         nla_for_each_nested(attr1, freqs, tmp1) {
5685                 n_channels++;
5686                 /*
5687                  * Some hardware has a limited channel list for
5688                  * scanning, and it is pretty much nonsensical
5689                  * to scan for a channel twice, so disallow that
5690                  * and don't require drivers to check that the
5691                  * channel list they get isn't longer than what
5692                  * they can scan, as long as they can scan all
5693                  * the channels they registered at once.
5694                  */
5695                 nla_for_each_nested(attr2, freqs, tmp2)
5696                         if (attr1 != attr2 &&
5697                             nla_get_u32(attr1) == nla_get_u32(attr2))
5698                                 return 0;
5699         }
5700
5701         return n_channels;
5702 }
5703
5704 static int nl80211_parse_random_mac(struct nlattr **attrs,
5705                                     u8 *mac_addr, u8 *mac_addr_mask)
5706 {
5707         int i;
5708
5709         if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
5710                 eth_zero_addr(mac_addr);
5711                 eth_zero_addr(mac_addr_mask);
5712                 mac_addr[0] = 0x2;
5713                 mac_addr_mask[0] = 0x3;
5714
5715                 return 0;
5716         }
5717
5718         /* need both or none */
5719         if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
5720                 return -EINVAL;
5721
5722         memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
5723         memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
5724
5725         /* don't allow or configure an mcast address */
5726         if (!is_multicast_ether_addr(mac_addr_mask) ||
5727             is_multicast_ether_addr(mac_addr))
5728                 return -EINVAL;
5729
5730         /*
5731          * allow users to pass a MAC address that has bits set outside
5732          * of the mask, but don't bother drivers with having to deal
5733          * with such bits
5734          */
5735         for (i = 0; i < ETH_ALEN; i++)
5736                 mac_addr[i] &= mac_addr_mask[i];
5737
5738         return 0;
5739 }
5740
5741 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
5742 {
5743         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5744         struct wireless_dev *wdev = info->user_ptr[1];
5745         struct cfg80211_scan_request *request;
5746         struct nlattr *attr;
5747         struct wiphy *wiphy;
5748         int err, tmp, n_ssids = 0, n_channels, i;
5749         size_t ie_len;
5750
5751         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5752                 return -EINVAL;
5753
5754         wiphy = &rdev->wiphy;
5755
5756         if (!rdev->ops->scan)
5757                 return -EOPNOTSUPP;
5758
5759         if (rdev->scan_req || rdev->scan_msg) {
5760                 err = -EBUSY;
5761                 goto unlock;
5762         }
5763
5764         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5765                 n_channels = validate_scan_freqs(
5766                                 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5767                 if (!n_channels) {
5768                         err = -EINVAL;
5769                         goto unlock;
5770                 }
5771         } else {
5772                 n_channels = ieee80211_get_num_supported_channels(wiphy);
5773         }
5774
5775         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5776                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
5777                         n_ssids++;
5778
5779         if (n_ssids > wiphy->max_scan_ssids) {
5780                 err = -EINVAL;
5781                 goto unlock;
5782         }
5783
5784         if (info->attrs[NL80211_ATTR_IE])
5785                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5786         else
5787                 ie_len = 0;
5788
5789         if (ie_len > wiphy->max_scan_ie_len) {
5790                 err = -EINVAL;
5791                 goto unlock;
5792         }
5793
5794         request = kzalloc(sizeof(*request)
5795                         + sizeof(*request->ssids) * n_ssids
5796                         + sizeof(*request->channels) * n_channels
5797                         + ie_len, GFP_KERNEL);
5798         if (!request) {
5799                 err = -ENOMEM;
5800                 goto unlock;
5801         }
5802
5803         if (n_ssids)
5804                 request->ssids = (void *)&request->channels[n_channels];
5805         request->n_ssids = n_ssids;
5806         if (ie_len) {
5807                 if (n_ssids)
5808                         request->ie = (void *)(request->ssids + n_ssids);
5809                 else
5810                         request->ie = (void *)(request->channels + n_channels);
5811         }
5812
5813         i = 0;
5814         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5815                 /* user specified, bail out if channel not found */
5816                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
5817                         struct ieee80211_channel *chan;
5818
5819                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5820
5821                         if (!chan) {
5822                                 err = -EINVAL;
5823                                 goto out_free;
5824                         }
5825
5826                         /* ignore disabled channels */
5827                         if (chan->flags & IEEE80211_CHAN_DISABLED)
5828                                 continue;
5829
5830                         request->channels[i] = chan;
5831                         i++;
5832                 }
5833         } else {
5834                 enum ieee80211_band band;
5835
5836                 /* all channels */
5837                 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5838                         int j;
5839                         if (!wiphy->bands[band])
5840                                 continue;
5841                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5842                                 struct ieee80211_channel *chan;
5843
5844                                 chan = &wiphy->bands[band]->channels[j];
5845
5846                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
5847                                         continue;
5848
5849                                 request->channels[i] = chan;
5850                                 i++;
5851                         }
5852                 }
5853         }
5854
5855         if (!i) {
5856                 err = -EINVAL;
5857                 goto out_free;
5858         }
5859
5860         request->n_channels = i;
5861
5862         i = 0;
5863         if (n_ssids) {
5864                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
5865                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5866                                 err = -EINVAL;
5867                                 goto out_free;
5868                         }
5869                         request->ssids[i].ssid_len = nla_len(attr);
5870                         memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
5871                         i++;
5872                 }
5873         }
5874
5875         if (info->attrs[NL80211_ATTR_IE]) {
5876                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5877                 memcpy((void *)request->ie,
5878                        nla_data(info->attrs[NL80211_ATTR_IE]),
5879                        request->ie_len);
5880         }
5881
5882         for (i = 0; i < IEEE80211_NUM_BANDS; i++)
5883                 if (wiphy->bands[i])
5884                         request->rates[i] =
5885                                 (1 << wiphy->bands[i]->n_bitrates) - 1;
5886
5887         if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
5888                 nla_for_each_nested(attr,
5889                                     info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
5890                                     tmp) {
5891                         enum ieee80211_band band = nla_type(attr);
5892
5893                         if (band < 0 || band >= IEEE80211_NUM_BANDS) {
5894                                 err = -EINVAL;
5895                                 goto out_free;
5896                         }
5897
5898                         if (!wiphy->bands[band])
5899                                 continue;
5900
5901                         err = ieee80211_get_ratemask(wiphy->bands[band],
5902                                                      nla_data(attr),
5903                                                      nla_len(attr),
5904                                                      &request->rates[band]);
5905                         if (err)
5906                                 goto out_free;
5907                 }
5908         }
5909
5910         if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
5911                 request->flags = nla_get_u32(
5912                         info->attrs[NL80211_ATTR_SCAN_FLAGS]);
5913                 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
5914                     !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
5915                         err = -EOPNOTSUPP;
5916                         goto out_free;
5917                 }
5918
5919                 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
5920                         if (!(wiphy->features &
5921                                         NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR)) {
5922                                 err = -EOPNOTSUPP;
5923                                 goto out_free;
5924                         }
5925
5926                         if (wdev->current_bss) {
5927                                 err = -EOPNOTSUPP;
5928                                 goto out_free;
5929                         }
5930
5931                         err = nl80211_parse_random_mac(info->attrs,
5932                                                        request->mac_addr,
5933                                                        request->mac_addr_mask);
5934                         if (err)
5935                                 goto out_free;
5936                 }
5937         }
5938
5939         request->no_cck =
5940                 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
5941
5942         request->wdev = wdev;
5943         request->wiphy = &rdev->wiphy;
5944         request->scan_start = jiffies;
5945
5946         rdev->scan_req = request;
5947         err = rdev_scan(rdev, request);
5948
5949         if (!err) {
5950                 nl80211_send_scan_start(rdev, wdev);
5951                 if (wdev->netdev)
5952                         dev_hold(wdev->netdev);
5953         } else {
5954  out_free:
5955                 rdev->scan_req = NULL;
5956                 kfree(request);
5957         }
5958
5959  unlock:
5960         return err;
5961 }
5962
5963 static struct cfg80211_sched_scan_request *
5964 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
5965                          struct nlattr **attrs)
5966 {
5967         struct cfg80211_sched_scan_request *request;
5968         struct nlattr *attr;
5969         int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i;
5970         u32 interval;
5971         enum ieee80211_band band;
5972         size_t ie_len;
5973         struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
5974         s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
5975
5976         if (!is_valid_ie_attr(attrs[NL80211_ATTR_IE]))
5977                 return ERR_PTR(-EINVAL);
5978
5979         if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
5980                 return ERR_PTR(-EINVAL);
5981
5982         interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
5983         if (interval == 0)
5984                 return ERR_PTR(-EINVAL);
5985
5986         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5987                 n_channels = validate_scan_freqs(
5988                                 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5989                 if (!n_channels)
5990                         return ERR_PTR(-EINVAL);
5991         } else {
5992                 n_channels = ieee80211_get_num_supported_channels(wiphy);
5993         }
5994
5995         if (attrs[NL80211_ATTR_SCAN_SSIDS])
5996                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
5997                                     tmp)
5998                         n_ssids++;
5999
6000         if (n_ssids > wiphy->max_sched_scan_ssids)
6001                 return ERR_PTR(-EINVAL);
6002
6003         /*
6004          * First, count the number of 'real' matchsets. Due to an issue with
6005          * the old implementation, matchsets containing only the RSSI attribute
6006          * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
6007          * RSSI for all matchsets, rather than their own matchset for reporting
6008          * all APs with a strong RSSI. This is needed to be compatible with
6009          * older userspace that treated a matchset with only the RSSI as the
6010          * global RSSI for all other matchsets - if there are other matchsets.
6011          */
6012         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
6013                 nla_for_each_nested(attr,
6014                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
6015                                     tmp) {
6016                         struct nlattr *rssi;
6017
6018                         err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
6019                                         nla_data(attr), nla_len(attr),
6020                                         nl80211_match_policy);
6021                         if (err)
6022                                 return ERR_PTR(err);
6023                         /* add other standalone attributes here */
6024                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID]) {
6025                                 n_match_sets++;
6026                                 continue;
6027                         }
6028                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
6029                         if (rssi)
6030                                 default_match_rssi = nla_get_s32(rssi);
6031                 }
6032         }
6033
6034         /* However, if there's no other matchset, add the RSSI one */
6035         if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
6036                 n_match_sets = 1;
6037
6038         if (n_match_sets > wiphy->max_match_sets)
6039                 return ERR_PTR(-EINVAL);
6040
6041         if (attrs[NL80211_ATTR_IE])
6042                 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
6043         else
6044                 ie_len = 0;
6045
6046         if (ie_len > wiphy->max_sched_scan_ie_len)
6047                 return ERR_PTR(-EINVAL);
6048
6049         request = kzalloc(sizeof(*request)
6050                         + sizeof(*request->ssids) * n_ssids
6051                         + sizeof(*request->match_sets) * n_match_sets
6052                         + sizeof(*request->channels) * n_channels
6053                         + ie_len, GFP_KERNEL);
6054         if (!request)
6055                 return ERR_PTR(-ENOMEM);
6056
6057         if (n_ssids)
6058                 request->ssids = (void *)&request->channels[n_channels];
6059         request->n_ssids = n_ssids;
6060         if (ie_len) {
6061                 if (n_ssids)
6062                         request->ie = (void *)(request->ssids + n_ssids);
6063                 else
6064                         request->ie = (void *)(request->channels + n_channels);
6065         }
6066
6067         if (n_match_sets) {
6068                 if (request->ie)
6069                         request->match_sets = (void *)(request->ie + ie_len);
6070                 else if (n_ssids)
6071                         request->match_sets =
6072                                 (void *)(request->ssids + n_ssids);
6073                 else
6074                         request->match_sets =
6075                                 (void *)(request->channels + n_channels);
6076         }
6077         request->n_match_sets = n_match_sets;
6078
6079         i = 0;
6080         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6081                 /* user specified, bail out if channel not found */
6082                 nla_for_each_nested(attr,
6083                                     attrs[NL80211_ATTR_SCAN_FREQUENCIES],
6084                                     tmp) {
6085                         struct ieee80211_channel *chan;
6086
6087                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
6088
6089                         if (!chan) {
6090                                 err = -EINVAL;
6091                                 goto out_free;
6092                         }
6093
6094                         /* ignore disabled channels */
6095                         if (chan->flags & IEEE80211_CHAN_DISABLED)
6096                                 continue;
6097
6098                         request->channels[i] = chan;
6099                         i++;
6100                 }
6101         } else {
6102                 /* all channels */
6103                 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
6104                         int j;
6105                         if (!wiphy->bands[band])
6106                                 continue;
6107                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
6108                                 struct ieee80211_channel *chan;
6109
6110                                 chan = &wiphy->bands[band]->channels[j];
6111
6112                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
6113                                         continue;
6114
6115                                 request->channels[i] = chan;
6116                                 i++;
6117                         }
6118                 }
6119         }
6120
6121         if (!i) {
6122                 err = -EINVAL;
6123                 goto out_free;
6124         }
6125
6126         request->n_channels = i;
6127
6128         i = 0;
6129         if (n_ssids) {
6130                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
6131                                     tmp) {
6132                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
6133                                 err = -EINVAL;
6134                                 goto out_free;
6135                         }
6136                         request->ssids[i].ssid_len = nla_len(attr);
6137                         memcpy(request->ssids[i].ssid, nla_data(attr),
6138                                nla_len(attr));
6139                         i++;
6140                 }
6141         }
6142
6143         i = 0;
6144         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
6145                 nla_for_each_nested(attr,
6146                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
6147                                     tmp) {
6148                         struct nlattr *ssid, *rssi;
6149
6150                         err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
6151                                         nla_data(attr), nla_len(attr),
6152                                         nl80211_match_policy);
6153                         if (err)
6154                                 goto out_free;
6155                         ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
6156                         if (ssid) {
6157                                 if (WARN_ON(i >= n_match_sets)) {
6158                                         /* this indicates a programming error,
6159                                          * the loop above should have verified
6160                                          * things properly
6161                                          */
6162                                         err = -EINVAL;
6163                                         goto out_free;
6164                                 }
6165
6166                                 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
6167                                         err = -EINVAL;
6168                                         goto out_free;
6169                                 }
6170                                 memcpy(request->match_sets[i].ssid.ssid,
6171                                        nla_data(ssid), nla_len(ssid));
6172                                 request->match_sets[i].ssid.ssid_len =
6173                                         nla_len(ssid);
6174                                 /* special attribute - old implemenation w/a */
6175                                 request->match_sets[i].rssi_thold =
6176                                         default_match_rssi;
6177                                 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
6178                                 if (rssi)
6179                                         request->match_sets[i].rssi_thold =
6180                                                 nla_get_s32(rssi);
6181                         }
6182                         i++;
6183                 }
6184
6185                 /* there was no other matchset, so the RSSI one is alone */
6186                 if (i == 0 && n_match_sets)
6187                         request->match_sets[0].rssi_thold = default_match_rssi;
6188
6189                 request->min_rssi_thold = INT_MAX;
6190                 for (i = 0; i < n_match_sets; i++)
6191                         request->min_rssi_thold =
6192                                 min(request->match_sets[i].rssi_thold,
6193                                     request->min_rssi_thold);
6194         } else {
6195                 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
6196         }
6197
6198         if (ie_len) {
6199                 request->ie_len = ie_len;
6200                 memcpy((void *)request->ie,
6201                        nla_data(attrs[NL80211_ATTR_IE]),
6202                        request->ie_len);
6203         }
6204
6205         if (attrs[NL80211_ATTR_SCAN_FLAGS]) {
6206                 request->flags = nla_get_u32(
6207                         attrs[NL80211_ATTR_SCAN_FLAGS]);
6208                 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
6209                     !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
6210                         err = -EOPNOTSUPP;
6211                         goto out_free;
6212                 }
6213
6214                 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
6215                         u32 flg = NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR;
6216
6217                         if (!wdev) /* must be net-detect */
6218                                 flg = NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
6219
6220                         if (!(wiphy->features & flg)) {
6221                                 err = -EOPNOTSUPP;
6222                                 goto out_free;
6223                         }
6224
6225                         if (wdev && wdev->current_bss) {
6226                                 err = -EOPNOTSUPP;
6227                                 goto out_free;
6228                         }
6229
6230                         err = nl80211_parse_random_mac(attrs, request->mac_addr,
6231                                                        request->mac_addr_mask);
6232                         if (err)
6233                                 goto out_free;
6234                 }
6235         }
6236
6237         if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
6238                 request->delay =
6239                         nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
6240
6241         request->interval = interval;
6242         request->scan_start = jiffies;
6243
6244         return request;
6245
6246 out_free:
6247         kfree(request);
6248         return ERR_PTR(err);
6249 }
6250
6251 static int nl80211_start_sched_scan(struct sk_buff *skb,
6252                                     struct genl_info *info)
6253 {
6254         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6255         struct net_device *dev = info->user_ptr[1];
6256         struct wireless_dev *wdev = dev->ieee80211_ptr;
6257         struct cfg80211_sched_scan_request *sched_scan_req;
6258         int err;
6259
6260         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
6261             !rdev->ops->sched_scan_start)
6262                 return -EOPNOTSUPP;
6263
6264         if (rdev->sched_scan_req)
6265                 return -EINPROGRESS;
6266
6267         sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
6268                                                   info->attrs);
6269
6270         err = PTR_ERR_OR_ZERO(sched_scan_req);
6271         if (err)
6272                 goto out_err;
6273
6274         err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
6275         if (err)
6276                 goto out_free;
6277
6278         sched_scan_req->dev = dev;
6279         sched_scan_req->wiphy = &rdev->wiphy;
6280
6281         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
6282                 sched_scan_req->owner_nlportid = info->snd_portid;
6283
6284         rcu_assign_pointer(rdev->sched_scan_req, sched_scan_req);
6285
6286         nl80211_send_sched_scan(rdev, dev,
6287                                 NL80211_CMD_START_SCHED_SCAN);
6288         return 0;
6289
6290 out_free:
6291         kfree(sched_scan_req);
6292 out_err:
6293         return err;
6294 }
6295
6296 static int nl80211_stop_sched_scan(struct sk_buff *skb,
6297                                    struct genl_info *info)
6298 {
6299         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6300
6301         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
6302             !rdev->ops->sched_scan_stop)
6303                 return -EOPNOTSUPP;
6304
6305         return __cfg80211_stop_sched_scan(rdev, false);
6306 }
6307
6308 static int nl80211_start_radar_detection(struct sk_buff *skb,
6309                                          struct genl_info *info)
6310 {
6311         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6312         struct net_device *dev = info->user_ptr[1];
6313         struct wireless_dev *wdev = dev->ieee80211_ptr;
6314         struct cfg80211_chan_def chandef;
6315         enum nl80211_dfs_regions dfs_region;
6316         unsigned int cac_time_ms;
6317         int err;
6318
6319         dfs_region = reg_get_dfs_region(wdev->wiphy);
6320         if (dfs_region == NL80211_DFS_UNSET)
6321                 return -EINVAL;
6322
6323         err = nl80211_parse_chandef(rdev, info, &chandef);
6324         if (err)
6325                 return err;
6326
6327         if (netif_carrier_ok(dev))
6328                 return -EBUSY;
6329
6330         if (wdev->cac_started)
6331                 return -EBUSY;
6332
6333         err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef,
6334                                             wdev->iftype);
6335         if (err < 0)
6336                 return err;
6337
6338         if (err == 0)
6339                 return -EINVAL;
6340
6341         if (!cfg80211_chandef_dfs_usable(wdev->wiphy, &chandef))
6342                 return -EINVAL;
6343
6344         if (!rdev->ops->start_radar_detection)
6345                 return -EOPNOTSUPP;
6346
6347         cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
6348         if (WARN_ON(!cac_time_ms))
6349                 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
6350
6351         err = rdev->ops->start_radar_detection(&rdev->wiphy, dev, &chandef,
6352                                                cac_time_ms);
6353         if (!err) {
6354                 wdev->chandef = chandef;
6355                 wdev->cac_started = true;
6356                 wdev->cac_start_time = jiffies;
6357                 wdev->cac_time_ms = cac_time_ms;
6358         }
6359         return err;
6360 }
6361
6362 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
6363 {
6364         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6365         struct net_device *dev = info->user_ptr[1];
6366         struct wireless_dev *wdev = dev->ieee80211_ptr;
6367         struct cfg80211_csa_settings params;
6368         /* csa_attrs is defined static to avoid waste of stack size - this
6369          * function is called under RTNL lock, so this should not be a problem.
6370          */
6371         static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
6372         int err;
6373         bool need_new_beacon = false;
6374         int len, i;
6375         u32 cs_count;
6376
6377         if (!rdev->ops->channel_switch ||
6378             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
6379                 return -EOPNOTSUPP;
6380
6381         switch (dev->ieee80211_ptr->iftype) {
6382         case NL80211_IFTYPE_AP:
6383         case NL80211_IFTYPE_P2P_GO:
6384                 need_new_beacon = true;
6385
6386                 /* useless if AP is not running */
6387                 if (!wdev->beacon_interval)
6388                         return -ENOTCONN;
6389                 break;
6390         case NL80211_IFTYPE_ADHOC:
6391                 if (!wdev->ssid_len)
6392                         return -ENOTCONN;
6393                 break;
6394         case NL80211_IFTYPE_MESH_POINT:
6395                 if (!wdev->mesh_id_len)
6396                         return -ENOTCONN;
6397                 break;
6398         default:
6399                 return -EOPNOTSUPP;
6400         }
6401
6402         memset(&params, 0, sizeof(params));
6403
6404         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
6405             !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
6406                 return -EINVAL;
6407
6408         /* only important for AP, IBSS and mesh create IEs internally */
6409         if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
6410                 return -EINVAL;
6411
6412         /* Even though the attribute is u32, the specification says
6413          * u8, so let's make sure we don't overflow.
6414          */
6415         cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
6416         if (cs_count > 255)
6417                 return -EINVAL;
6418
6419         params.count = cs_count;
6420
6421         if (!need_new_beacon)
6422                 goto skip_beacons;
6423
6424         err = nl80211_parse_beacon(info->attrs, &params.beacon_after);
6425         if (err)
6426                 return err;
6427
6428         err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX,
6429                                info->attrs[NL80211_ATTR_CSA_IES],
6430                                nl80211_policy);
6431         if (err)
6432                 return err;
6433
6434         err = nl80211_parse_beacon(csa_attrs, &params.beacon_csa);
6435         if (err)
6436                 return err;
6437
6438         if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
6439                 return -EINVAL;
6440
6441         len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
6442         if (!len || (len % sizeof(u16)))
6443                 return -EINVAL;
6444
6445         params.n_counter_offsets_beacon = len / sizeof(u16);
6446         if (rdev->wiphy.max_num_csa_counters &&
6447             (params.n_counter_offsets_beacon >
6448              rdev->wiphy.max_num_csa_counters))
6449                 return -EINVAL;
6450
6451         params.counter_offsets_beacon =
6452                 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
6453
6454         /* sanity checks - counters should fit and be the same */
6455         for (i = 0; i < params.n_counter_offsets_beacon; i++) {
6456                 u16 offset = params.counter_offsets_beacon[i];
6457
6458                 if (offset >= params.beacon_csa.tail_len)
6459                         return -EINVAL;
6460
6461                 if (params.beacon_csa.tail[offset] != params.count)
6462                         return -EINVAL;
6463         }
6464
6465         if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
6466                 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
6467                 if (!len || (len % sizeof(u16)))
6468                         return -EINVAL;
6469
6470                 params.n_counter_offsets_presp = len / sizeof(u16);
6471                 if (rdev->wiphy.max_num_csa_counters &&
6472                     (params.n_counter_offsets_beacon >
6473                      rdev->wiphy.max_num_csa_counters))
6474                         return -EINVAL;
6475
6476                 params.counter_offsets_presp =
6477                         nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
6478
6479                 /* sanity checks - counters should fit and be the same */
6480                 for (i = 0; i < params.n_counter_offsets_presp; i++) {
6481                         u16 offset = params.counter_offsets_presp[i];
6482
6483                         if (offset >= params.beacon_csa.probe_resp_len)
6484                                 return -EINVAL;
6485
6486                         if (params.beacon_csa.probe_resp[offset] !=
6487                             params.count)
6488                                 return -EINVAL;
6489                 }
6490         }
6491
6492 skip_beacons:
6493         err = nl80211_parse_chandef(rdev, info, &params.chandef);
6494         if (err)
6495                 return err;
6496
6497         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
6498                                            wdev->iftype))
6499                 return -EINVAL;
6500
6501         err = cfg80211_chandef_dfs_required(wdev->wiphy,
6502                                             &params.chandef,
6503                                             wdev->iftype);
6504         if (err < 0)
6505                 return err;
6506
6507         if (err > 0)
6508                 params.radar_required = true;
6509
6510         if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
6511                 params.block_tx = true;
6512
6513         wdev_lock(wdev);
6514         err = rdev_channel_switch(rdev, dev, &params);
6515         wdev_unlock(wdev);
6516
6517         return err;
6518 }
6519
6520 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
6521                             u32 seq, int flags,
6522                             struct cfg80211_registered_device *rdev,
6523                             struct wireless_dev *wdev,
6524                             struct cfg80211_internal_bss *intbss)
6525 {
6526         struct cfg80211_bss *res = &intbss->pub;
6527         const struct cfg80211_bss_ies *ies;
6528         void *hdr;
6529         struct nlattr *bss;
6530
6531         ASSERT_WDEV_LOCK(wdev);
6532
6533         hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
6534                              NL80211_CMD_NEW_SCAN_RESULTS);
6535         if (!hdr)
6536                 return -1;
6537
6538         genl_dump_check_consistent(cb, hdr, &nl80211_fam);
6539
6540         if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
6541                 goto nla_put_failure;
6542         if (wdev->netdev &&
6543             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
6544                 goto nla_put_failure;
6545         if (nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
6546                 goto nla_put_failure;
6547
6548         bss = nla_nest_start(msg, NL80211_ATTR_BSS);
6549         if (!bss)
6550                 goto nla_put_failure;
6551         if ((!is_zero_ether_addr(res->bssid) &&
6552              nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
6553                 goto nla_put_failure;
6554
6555         rcu_read_lock();
6556         /* indicate whether we have probe response data or not */
6557         if (rcu_access_pointer(res->proberesp_ies) &&
6558             nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
6559                 goto fail_unlock_rcu;
6560
6561         /* this pointer prefers to be pointed to probe response data
6562          * but is always valid
6563          */
6564         ies = rcu_dereference(res->ies);
6565         if (ies) {
6566                 if (nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf))
6567                         goto fail_unlock_rcu;
6568                 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
6569                                         ies->len, ies->data))
6570                         goto fail_unlock_rcu;
6571         }
6572
6573         /* and this pointer is always (unless driver didn't know) beacon data */
6574         ies = rcu_dereference(res->beacon_ies);
6575         if (ies && ies->from_beacon) {
6576                 if (nla_put_u64(msg, NL80211_BSS_BEACON_TSF, ies->tsf))
6577                         goto fail_unlock_rcu;
6578                 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
6579                                         ies->len, ies->data))
6580                         goto fail_unlock_rcu;
6581         }
6582         rcu_read_unlock();
6583
6584         if (res->beacon_interval &&
6585             nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
6586                 goto nla_put_failure;
6587         if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
6588             nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
6589             nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
6590             nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
6591                         jiffies_to_msecs(jiffies - intbss->ts)))
6592                 goto nla_put_failure;
6593
6594         switch (rdev->wiphy.signal_type) {
6595         case CFG80211_SIGNAL_TYPE_MBM:
6596                 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
6597                         goto nla_put_failure;
6598                 break;
6599         case CFG80211_SIGNAL_TYPE_UNSPEC:
6600                 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
6601                         goto nla_put_failure;
6602                 break;
6603         default:
6604                 break;
6605         }
6606
6607         switch (wdev->iftype) {
6608         case NL80211_IFTYPE_P2P_CLIENT:
6609         case NL80211_IFTYPE_STATION:
6610                 if (intbss == wdev->current_bss &&
6611                     nla_put_u32(msg, NL80211_BSS_STATUS,
6612                                 NL80211_BSS_STATUS_ASSOCIATED))
6613                         goto nla_put_failure;
6614                 break;
6615         case NL80211_IFTYPE_ADHOC:
6616                 if (intbss == wdev->current_bss &&
6617                     nla_put_u32(msg, NL80211_BSS_STATUS,
6618                                 NL80211_BSS_STATUS_IBSS_JOINED))
6619                         goto nla_put_failure;
6620                 break;
6621         default:
6622                 break;
6623         }
6624
6625         nla_nest_end(msg, bss);
6626
6627         genlmsg_end(msg, hdr);
6628         return 0;
6629
6630  fail_unlock_rcu:
6631         rcu_read_unlock();
6632  nla_put_failure:
6633         genlmsg_cancel(msg, hdr);
6634         return -EMSGSIZE;
6635 }
6636
6637 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
6638 {
6639         struct cfg80211_registered_device *rdev;
6640         struct cfg80211_internal_bss *scan;
6641         struct wireless_dev *wdev;
6642         int start = cb->args[2], idx = 0;
6643         int err;
6644
6645         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
6646         if (err)
6647                 return err;
6648
6649         wdev_lock(wdev);
6650         spin_lock_bh(&rdev->bss_lock);
6651         cfg80211_bss_expire(rdev);
6652
6653         cb->seq = rdev->bss_generation;
6654
6655         list_for_each_entry(scan, &rdev->bss_list, list) {
6656                 if (++idx <= start)
6657                         continue;
6658                 if (nl80211_send_bss(skb, cb,
6659                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6660                                 rdev, wdev, scan) < 0) {
6661                         idx--;
6662                         break;
6663                 }
6664         }
6665
6666         spin_unlock_bh(&rdev->bss_lock);
6667         wdev_unlock(wdev);
6668
6669         cb->args[2] = idx;
6670         nl80211_finish_wdev_dump(rdev);
6671
6672         return skb->len;
6673 }
6674
6675 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
6676                                int flags, struct net_device *dev,
6677                                bool allow_radio_stats,
6678                                struct survey_info *survey)
6679 {
6680         void *hdr;
6681         struct nlattr *infoattr;
6682
6683         /* skip radio stats if userspace didn't request them */
6684         if (!survey->channel && !allow_radio_stats)
6685                 return 0;
6686
6687         hdr = nl80211hdr_put(msg, portid, seq, flags,
6688                              NL80211_CMD_NEW_SURVEY_RESULTS);
6689         if (!hdr)
6690                 return -ENOMEM;
6691
6692         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
6693                 goto nla_put_failure;
6694
6695         infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
6696         if (!infoattr)
6697                 goto nla_put_failure;
6698
6699         if (survey->channel &&
6700             nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
6701                         survey->channel->center_freq))
6702                 goto nla_put_failure;
6703
6704         if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
6705             nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
6706                 goto nla_put_failure;
6707         if ((survey->filled & SURVEY_INFO_IN_USE) &&
6708             nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
6709                 goto nla_put_failure;
6710         if ((survey->filled & SURVEY_INFO_TIME) &&
6711             nla_put_u64(msg, NL80211_SURVEY_INFO_TIME,
6712                         survey->time))
6713                 goto nla_put_failure;
6714         if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
6715             nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_BUSY,
6716                         survey->time_busy))
6717                 goto nla_put_failure;
6718         if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
6719             nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
6720                         survey->time_ext_busy))
6721                 goto nla_put_failure;
6722         if ((survey->filled & SURVEY_INFO_TIME_RX) &&
6723             nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_RX,
6724                         survey->time_rx))
6725                 goto nla_put_failure;
6726         if ((survey->filled & SURVEY_INFO_TIME_TX) &&
6727             nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_TX,
6728                         survey->time_tx))
6729                 goto nla_put_failure;
6730         if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
6731             nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_SCAN,
6732                         survey->time_scan))
6733                 goto nla_put_failure;
6734
6735         nla_nest_end(msg, infoattr);
6736
6737         genlmsg_end(msg, hdr);
6738         return 0;
6739
6740  nla_put_failure:
6741         genlmsg_cancel(msg, hdr);
6742         return -EMSGSIZE;
6743 }
6744
6745 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
6746 {
6747         struct survey_info survey;
6748         struct cfg80211_registered_device *rdev;
6749         struct wireless_dev *wdev;
6750         int survey_idx = cb->args[2];
6751         int res;
6752         bool radio_stats;
6753
6754         res = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
6755         if (res)
6756                 return res;
6757
6758         /* prepare_wdev_dump parsed the attributes */
6759         radio_stats = nl80211_fam.attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
6760
6761         if (!wdev->netdev) {
6762                 res = -EINVAL;
6763                 goto out_err;
6764         }
6765
6766         if (!rdev->ops->dump_survey) {
6767                 res = -EOPNOTSUPP;
6768                 goto out_err;
6769         }
6770
6771         while (1) {
6772                 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
6773                 if (res == -ENOENT)
6774                         break;
6775                 if (res)
6776                         goto out_err;
6777
6778                 /* don't send disabled channels, but do send non-channel data */
6779                 if (survey.channel &&
6780                     survey.channel->flags & IEEE80211_CHAN_DISABLED) {
6781                         survey_idx++;
6782                         continue;
6783                 }
6784
6785                 if (nl80211_send_survey(skb,
6786                                 NETLINK_CB(cb->skb).portid,
6787                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6788                                 wdev->netdev, radio_stats, &survey) < 0)
6789                         goto out;
6790                 survey_idx++;
6791         }
6792
6793  out:
6794         cb->args[2] = survey_idx;
6795         res = skb->len;
6796  out_err:
6797         nl80211_finish_wdev_dump(rdev);
6798         return res;
6799 }
6800
6801 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
6802 {
6803         return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
6804                                   NL80211_WPA_VERSION_2));
6805 }
6806
6807 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
6808 {
6809         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6810         struct net_device *dev = info->user_ptr[1];
6811         struct ieee80211_channel *chan;
6812         const u8 *bssid, *ssid, *ie = NULL, *sae_data = NULL;
6813         int err, ssid_len, ie_len = 0, sae_data_len = 0;
6814         enum nl80211_auth_type auth_type;
6815         struct key_parse key;
6816         bool local_state_change;
6817
6818         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6819                 return -EINVAL;
6820
6821         if (!info->attrs[NL80211_ATTR_MAC])
6822                 return -EINVAL;
6823
6824         if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
6825                 return -EINVAL;
6826
6827         if (!info->attrs[NL80211_ATTR_SSID])
6828                 return -EINVAL;
6829
6830         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
6831                 return -EINVAL;
6832
6833         err = nl80211_parse_key(info, &key);
6834         if (err)
6835                 return err;
6836
6837         if (key.idx >= 0) {
6838                 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
6839                         return -EINVAL;
6840                 if (!key.p.key || !key.p.key_len)
6841                         return -EINVAL;
6842                 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
6843                      key.p.key_len != WLAN_KEY_LEN_WEP40) &&
6844                     (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
6845                      key.p.key_len != WLAN_KEY_LEN_WEP104))
6846                         return -EINVAL;
6847                 if (key.idx > 4)
6848                         return -EINVAL;
6849         } else {
6850                 key.p.key_len = 0;
6851                 key.p.key = NULL;
6852         }
6853
6854         if (key.idx >= 0) {
6855                 int i;
6856                 bool ok = false;
6857                 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
6858                         if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
6859                                 ok = true;
6860                                 break;
6861                         }
6862                 }
6863                 if (!ok)
6864                         return -EINVAL;
6865         }
6866
6867         if (!rdev->ops->auth)
6868                 return -EOPNOTSUPP;
6869
6870         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6871             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6872                 return -EOPNOTSUPP;
6873
6874         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6875         chan = nl80211_get_valid_chan(&rdev->wiphy,
6876                                       info->attrs[NL80211_ATTR_WIPHY_FREQ]);
6877         if (!chan)
6878                 return -EINVAL;
6879
6880         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6881         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6882
6883         if (info->attrs[NL80211_ATTR_IE]) {
6884                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6885                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6886         }
6887
6888         auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
6889         if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
6890                 return -EINVAL;
6891
6892         if (auth_type == NL80211_AUTHTYPE_SAE &&
6893             !info->attrs[NL80211_ATTR_SAE_DATA])
6894                 return -EINVAL;
6895
6896         if (info->attrs[NL80211_ATTR_SAE_DATA]) {
6897                 if (auth_type != NL80211_AUTHTYPE_SAE)
6898                         return -EINVAL;
6899                 sae_data = nla_data(info->attrs[NL80211_ATTR_SAE_DATA]);
6900                 sae_data_len = nla_len(info->attrs[NL80211_ATTR_SAE_DATA]);
6901                 /* need to include at least Auth Transaction and Status Code */
6902                 if (sae_data_len < 4)
6903                         return -EINVAL;
6904         }
6905
6906         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6907
6908         /*
6909          * Since we no longer track auth state, ignore
6910          * requests to only change local state.
6911          */
6912         if (local_state_change)
6913                 return 0;
6914
6915         wdev_lock(dev->ieee80211_ptr);
6916         err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
6917                                  ssid, ssid_len, ie, ie_len,
6918                                  key.p.key, key.p.key_len, key.idx,
6919                                  sae_data, sae_data_len);
6920         wdev_unlock(dev->ieee80211_ptr);
6921         return err;
6922 }
6923
6924 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
6925                                    struct genl_info *info,
6926                                    struct cfg80211_crypto_settings *settings,
6927                                    int cipher_limit)
6928 {
6929         memset(settings, 0, sizeof(*settings));
6930
6931         settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
6932
6933         if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
6934                 u16 proto;
6935                 proto = nla_get_u16(
6936                         info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
6937                 settings->control_port_ethertype = cpu_to_be16(proto);
6938                 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
6939                     proto != ETH_P_PAE)
6940                         return -EINVAL;
6941                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
6942                         settings->control_port_no_encrypt = true;
6943         } else
6944                 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
6945
6946         if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
6947                 void *data;
6948                 int len, i;
6949
6950                 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6951                 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6952                 settings->n_ciphers_pairwise = len / sizeof(u32);
6953
6954                 if (len % sizeof(u32))
6955                         return -EINVAL;
6956
6957                 if (settings->n_ciphers_pairwise > cipher_limit)
6958                         return -EINVAL;
6959
6960                 memcpy(settings->ciphers_pairwise, data, len);
6961
6962                 for (i = 0; i < settings->n_ciphers_pairwise; i++)
6963                         if (!cfg80211_supported_cipher_suite(
6964                                         &rdev->wiphy,
6965                                         settings->ciphers_pairwise[i]))
6966                                 return -EINVAL;
6967         }
6968
6969         if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
6970                 settings->cipher_group =
6971                         nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
6972                 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
6973                                                      settings->cipher_group))
6974                         return -EINVAL;
6975         }
6976
6977         if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
6978                 settings->wpa_versions =
6979                         nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
6980                 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
6981                         return -EINVAL;
6982         }
6983
6984         if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
6985                 void *data;
6986                 int len;
6987
6988                 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
6989                 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
6990                 settings->n_akm_suites = len / sizeof(u32);
6991
6992                 if (len % sizeof(u32))
6993                         return -EINVAL;
6994
6995                 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
6996                         return -EINVAL;
6997
6998                 memcpy(settings->akm_suites, data, len);
6999         }
7000
7001         return 0;
7002 }
7003
7004 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
7005 {
7006         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7007         struct net_device *dev = info->user_ptr[1];
7008         struct ieee80211_channel *chan;
7009         struct cfg80211_assoc_request req = {};
7010         const u8 *bssid, *ssid;
7011         int err, ssid_len = 0;
7012
7013         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7014                 return -EINVAL;
7015
7016         if (!info->attrs[NL80211_ATTR_MAC] ||
7017             !info->attrs[NL80211_ATTR_SSID] ||
7018             !info->attrs[NL80211_ATTR_WIPHY_FREQ])
7019                 return -EINVAL;
7020
7021         if (!rdev->ops->assoc)
7022                 return -EOPNOTSUPP;
7023
7024         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7025             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7026                 return -EOPNOTSUPP;
7027
7028         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7029
7030         chan = nl80211_get_valid_chan(&rdev->wiphy,
7031                                       info->attrs[NL80211_ATTR_WIPHY_FREQ]);
7032         if (!chan)
7033                 return -EINVAL;
7034
7035         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7036         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7037
7038         if (info->attrs[NL80211_ATTR_IE]) {
7039                 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7040                 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7041         }
7042
7043         if (info->attrs[NL80211_ATTR_USE_MFP]) {
7044                 enum nl80211_mfp mfp =
7045                         nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
7046                 if (mfp == NL80211_MFP_REQUIRED)
7047                         req.use_mfp = true;
7048                 else if (mfp != NL80211_MFP_NO)
7049                         return -EINVAL;
7050         }
7051
7052         if (info->attrs[NL80211_ATTR_PREV_BSSID])
7053                 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
7054
7055         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
7056                 req.flags |= ASSOC_REQ_DISABLE_HT;
7057
7058         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7059                 memcpy(&req.ht_capa_mask,
7060                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
7061                        sizeof(req.ht_capa_mask));
7062
7063         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
7064                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7065                         return -EINVAL;
7066                 memcpy(&req.ht_capa,
7067                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7068                        sizeof(req.ht_capa));
7069         }
7070
7071         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
7072                 req.flags |= ASSOC_REQ_DISABLE_VHT;
7073
7074         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
7075                 memcpy(&req.vht_capa_mask,
7076                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
7077                        sizeof(req.vht_capa_mask));
7078
7079         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
7080                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
7081                         return -EINVAL;
7082                 memcpy(&req.vht_capa,
7083                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
7084                        sizeof(req.vht_capa));
7085         }
7086
7087         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
7088                 if (!(rdev->wiphy.features &
7089                       NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) ||
7090                     !(rdev->wiphy.features & NL80211_FEATURE_QUIET))
7091                         return -EINVAL;
7092                 req.flags |= ASSOC_REQ_USE_RRM;
7093         }
7094
7095         err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
7096         if (!err) {
7097                 wdev_lock(dev->ieee80211_ptr);
7098                 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
7099                                           ssid, ssid_len, &req);
7100                 wdev_unlock(dev->ieee80211_ptr);
7101         }
7102
7103         return err;
7104 }
7105
7106 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
7107 {
7108         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7109         struct net_device *dev = info->user_ptr[1];
7110         const u8 *ie = NULL, *bssid;
7111         int ie_len = 0, err;
7112         u16 reason_code;
7113         bool local_state_change;
7114
7115         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7116                 return -EINVAL;
7117
7118         if (!info->attrs[NL80211_ATTR_MAC])
7119                 return -EINVAL;
7120
7121         if (!info->attrs[NL80211_ATTR_REASON_CODE])
7122                 return -EINVAL;
7123
7124         if (!rdev->ops->deauth)
7125                 return -EOPNOTSUPP;
7126
7127         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7128             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7129                 return -EOPNOTSUPP;
7130
7131         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7132
7133         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7134         if (reason_code == 0) {
7135                 /* Reason Code 0 is reserved */
7136                 return -EINVAL;
7137         }
7138
7139         if (info->attrs[NL80211_ATTR_IE]) {
7140                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7141                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7142         }
7143
7144         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
7145
7146         wdev_lock(dev->ieee80211_ptr);
7147         err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
7148                                    local_state_change);
7149         wdev_unlock(dev->ieee80211_ptr);
7150         return err;
7151 }
7152
7153 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
7154 {
7155         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7156         struct net_device *dev = info->user_ptr[1];
7157         const u8 *ie = NULL, *bssid;
7158         int ie_len = 0, err;
7159         u16 reason_code;
7160         bool local_state_change;
7161
7162         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7163                 return -EINVAL;
7164
7165         if (!info->attrs[NL80211_ATTR_MAC])
7166                 return -EINVAL;
7167
7168         if (!info->attrs[NL80211_ATTR_REASON_CODE])
7169                 return -EINVAL;
7170
7171         if (!rdev->ops->disassoc)
7172                 return -EOPNOTSUPP;
7173
7174         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7175             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7176                 return -EOPNOTSUPP;
7177
7178         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7179
7180         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7181         if (reason_code == 0) {
7182                 /* Reason Code 0 is reserved */
7183                 return -EINVAL;
7184         }
7185
7186         if (info->attrs[NL80211_ATTR_IE]) {
7187                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7188                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7189         }
7190
7191         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
7192
7193         wdev_lock(dev->ieee80211_ptr);
7194         err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
7195                                      local_state_change);
7196         wdev_unlock(dev->ieee80211_ptr);
7197         return err;
7198 }
7199
7200 static bool
7201 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
7202                          int mcast_rate[IEEE80211_NUM_BANDS],
7203                          int rateval)
7204 {
7205         struct wiphy *wiphy = &rdev->wiphy;
7206         bool found = false;
7207         int band, i;
7208
7209         for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
7210                 struct ieee80211_supported_band *sband;
7211
7212                 sband = wiphy->bands[band];
7213                 if (!sband)
7214                         continue;
7215
7216                 for (i = 0; i < sband->n_bitrates; i++) {
7217                         if (sband->bitrates[i].bitrate == rateval) {
7218                                 mcast_rate[band] = i + 1;
7219                                 found = true;
7220                                 break;
7221                         }
7222                 }
7223         }
7224
7225         return found;
7226 }
7227
7228 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
7229 {
7230         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7231         struct net_device *dev = info->user_ptr[1];
7232         struct cfg80211_ibss_params ibss;
7233         struct wiphy *wiphy;
7234         struct cfg80211_cached_keys *connkeys = NULL;
7235         int err;
7236
7237         memset(&ibss, 0, sizeof(ibss));
7238
7239         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7240                 return -EINVAL;
7241
7242         if (!info->attrs[NL80211_ATTR_SSID] ||
7243             !nla_len(info->attrs[NL80211_ATTR_SSID]))
7244                 return -EINVAL;
7245
7246         ibss.beacon_interval = 100;
7247
7248         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
7249                 ibss.beacon_interval =
7250                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
7251                 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
7252                         return -EINVAL;
7253         }
7254
7255         if (!rdev->ops->join_ibss)
7256                 return -EOPNOTSUPP;
7257
7258         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
7259                 return -EOPNOTSUPP;
7260
7261         wiphy = &rdev->wiphy;
7262
7263         if (info->attrs[NL80211_ATTR_MAC]) {
7264                 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7265
7266                 if (!is_valid_ether_addr(ibss.bssid))
7267                         return -EINVAL;
7268         }
7269         ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7270         ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7271
7272         if (info->attrs[NL80211_ATTR_IE]) {
7273                 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7274                 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7275         }
7276
7277         err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
7278         if (err)
7279                 return err;
7280
7281         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
7282                                      NL80211_IFTYPE_ADHOC))
7283                 return -EINVAL;
7284
7285         switch (ibss.chandef.width) {
7286         case NL80211_CHAN_WIDTH_5:
7287         case NL80211_CHAN_WIDTH_10:
7288         case NL80211_CHAN_WIDTH_20_NOHT:
7289                 break;
7290         case NL80211_CHAN_WIDTH_20:
7291         case NL80211_CHAN_WIDTH_40:
7292                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
7293                         return -EINVAL;
7294                 break;
7295         case NL80211_CHAN_WIDTH_80:
7296         case NL80211_CHAN_WIDTH_80P80:
7297         case NL80211_CHAN_WIDTH_160:
7298                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
7299                         return -EINVAL;
7300                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
7301                                              NL80211_EXT_FEATURE_VHT_IBSS))
7302                         return -EINVAL;
7303                 break;
7304         default:
7305                 return -EINVAL;
7306         }
7307
7308         ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
7309         ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
7310
7311         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
7312                 u8 *rates =
7313                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7314                 int n_rates =
7315                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7316                 struct ieee80211_supported_band *sband =
7317                         wiphy->bands[ibss.chandef.chan->band];
7318
7319                 err = ieee80211_get_ratemask(sband, rates, n_rates,
7320                                              &ibss.basic_rates);
7321                 if (err)
7322                         return err;
7323         }
7324
7325         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7326                 memcpy(&ibss.ht_capa_mask,
7327                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
7328                        sizeof(ibss.ht_capa_mask));
7329
7330         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
7331                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7332                         return -EINVAL;
7333                 memcpy(&ibss.ht_capa,
7334                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7335                        sizeof(ibss.ht_capa));
7336         }
7337
7338         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
7339             !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
7340                         nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
7341                 return -EINVAL;
7342
7343         if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
7344                 bool no_ht = false;
7345
7346                 connkeys = nl80211_parse_connkeys(rdev,
7347                                           info->attrs[NL80211_ATTR_KEYS],
7348                                           &no_ht);
7349                 if (IS_ERR(connkeys))
7350                         return PTR_ERR(connkeys);
7351
7352                 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
7353                     no_ht) {
7354                         kfree(connkeys);
7355                         return -EINVAL;
7356                 }
7357         }
7358
7359         ibss.control_port =
7360                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
7361
7362         ibss.userspace_handles_dfs =
7363                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
7364
7365         err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
7366         if (err)
7367                 kzfree(connkeys);
7368         return err;
7369 }
7370
7371 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
7372 {
7373         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7374         struct net_device *dev = info->user_ptr[1];
7375
7376         if (!rdev->ops->leave_ibss)
7377                 return -EOPNOTSUPP;
7378
7379         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
7380                 return -EOPNOTSUPP;
7381
7382         return cfg80211_leave_ibss(rdev, dev, false);
7383 }
7384
7385 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
7386 {
7387         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7388         struct net_device *dev = info->user_ptr[1];
7389         int mcast_rate[IEEE80211_NUM_BANDS];
7390         u32 nla_rate;
7391         int err;
7392
7393         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
7394             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
7395             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
7396                 return -EOPNOTSUPP;
7397
7398         if (!rdev->ops->set_mcast_rate)
7399                 return -EOPNOTSUPP;
7400
7401         memset(mcast_rate, 0, sizeof(mcast_rate));
7402
7403         if (!info->attrs[NL80211_ATTR_MCAST_RATE])
7404                 return -EINVAL;
7405
7406         nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
7407         if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
7408                 return -EINVAL;
7409
7410         err = rdev->ops->set_mcast_rate(&rdev->wiphy, dev, mcast_rate);
7411
7412         return err;
7413 }
7414
7415 static struct sk_buff *
7416 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
7417                             struct wireless_dev *wdev, int approxlen,
7418                             u32 portid, u32 seq, enum nl80211_commands cmd,
7419                             enum nl80211_attrs attr,
7420                             const struct nl80211_vendor_cmd_info *info,
7421                             gfp_t gfp)
7422 {
7423         struct sk_buff *skb;
7424         void *hdr;
7425         struct nlattr *data;
7426
7427         skb = nlmsg_new(approxlen + 100, gfp);
7428         if (!skb)
7429                 return NULL;
7430
7431         hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
7432         if (!hdr) {
7433                 kfree_skb(skb);
7434                 return NULL;
7435         }
7436
7437         if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
7438                 goto nla_put_failure;
7439
7440         if (info) {
7441                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
7442                                 info->vendor_id))
7443                         goto nla_put_failure;
7444                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
7445                                 info->subcmd))
7446                         goto nla_put_failure;
7447         }
7448
7449         if (wdev) {
7450                 if (nla_put_u64(skb, NL80211_ATTR_WDEV,
7451                                 wdev_id(wdev)))
7452                         goto nla_put_failure;
7453                 if (wdev->netdev &&
7454                     nla_put_u32(skb, NL80211_ATTR_IFINDEX,
7455                                 wdev->netdev->ifindex))
7456                         goto nla_put_failure;
7457         }
7458
7459         data = nla_nest_start(skb, attr);
7460
7461         ((void **)skb->cb)[0] = rdev;
7462         ((void **)skb->cb)[1] = hdr;
7463         ((void **)skb->cb)[2] = data;
7464
7465         return skb;
7466
7467  nla_put_failure:
7468         kfree_skb(skb);
7469         return NULL;
7470 }
7471
7472 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
7473                                            struct wireless_dev *wdev,
7474                                            enum nl80211_commands cmd,
7475                                            enum nl80211_attrs attr,
7476                                            int vendor_event_idx,
7477                                            int approxlen, gfp_t gfp)
7478 {
7479         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
7480         const struct nl80211_vendor_cmd_info *info;
7481
7482         switch (cmd) {
7483         case NL80211_CMD_TESTMODE:
7484                 if (WARN_ON(vendor_event_idx != -1))
7485                         return NULL;
7486                 info = NULL;
7487                 break;
7488         case NL80211_CMD_VENDOR:
7489                 if (WARN_ON(vendor_event_idx < 0 ||
7490                             vendor_event_idx >= wiphy->n_vendor_events))
7491                         return NULL;
7492                 info = &wiphy->vendor_events[vendor_event_idx];
7493                 break;
7494         default:
7495                 WARN_ON(1);
7496                 return NULL;
7497         }
7498
7499         return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, 0, 0,
7500                                            cmd, attr, info, gfp);
7501 }
7502 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
7503
7504 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
7505 {
7506         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
7507         void *hdr = ((void **)skb->cb)[1];
7508         struct nlattr *data = ((void **)skb->cb)[2];
7509         enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
7510
7511         /* clear CB data for netlink core to own from now on */
7512         memset(skb->cb, 0, sizeof(skb->cb));
7513
7514         nla_nest_end(skb, data);
7515         genlmsg_end(skb, hdr);
7516
7517         if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
7518                 mcgrp = NL80211_MCGRP_VENDOR;
7519
7520         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), skb, 0,
7521                                 mcgrp, gfp);
7522 }
7523 EXPORT_SYMBOL(__cfg80211_send_event_skb);
7524
7525 #ifdef CONFIG_NL80211_TESTMODE
7526 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
7527 {
7528         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7529         struct wireless_dev *wdev =
7530                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
7531         int err;
7532
7533         if (!rdev->ops->testmode_cmd)
7534                 return -EOPNOTSUPP;
7535
7536         if (IS_ERR(wdev)) {
7537                 err = PTR_ERR(wdev);
7538                 if (err != -EINVAL)
7539                         return err;
7540                 wdev = NULL;
7541         } else if (wdev->wiphy != &rdev->wiphy) {
7542                 return -EINVAL;
7543         }
7544
7545         if (!info->attrs[NL80211_ATTR_TESTDATA])
7546                 return -EINVAL;
7547
7548         rdev->cur_cmd_info = info;
7549         err = rdev_testmode_cmd(rdev, wdev,
7550                                 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
7551                                 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
7552         rdev->cur_cmd_info = NULL;
7553
7554         return err;
7555 }
7556
7557 static int nl80211_testmode_dump(struct sk_buff *skb,
7558                                  struct netlink_callback *cb)
7559 {
7560         struct cfg80211_registered_device *rdev;
7561         int err;
7562         long phy_idx;
7563         void *data = NULL;
7564         int data_len = 0;
7565
7566         rtnl_lock();
7567
7568         if (cb->args[0]) {
7569                 /*
7570                  * 0 is a valid index, but not valid for args[0],
7571                  * so we need to offset by 1.
7572                  */
7573                 phy_idx = cb->args[0] - 1;
7574         } else {
7575                 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
7576                                   nl80211_fam.attrbuf, nl80211_fam.maxattr,
7577                                   nl80211_policy);
7578                 if (err)
7579                         goto out_err;
7580
7581                 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk),
7582                                                   nl80211_fam.attrbuf);
7583                 if (IS_ERR(rdev)) {
7584                         err = PTR_ERR(rdev);
7585                         goto out_err;
7586                 }
7587                 phy_idx = rdev->wiphy_idx;
7588                 rdev = NULL;
7589
7590                 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
7591                         cb->args[1] =
7592                                 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
7593         }
7594
7595         if (cb->args[1]) {
7596                 data = nla_data((void *)cb->args[1]);
7597                 data_len = nla_len((void *)cb->args[1]);
7598         }
7599
7600         rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
7601         if (!rdev) {
7602                 err = -ENOENT;
7603                 goto out_err;
7604         }
7605
7606         if (!rdev->ops->testmode_dump) {
7607                 err = -EOPNOTSUPP;
7608                 goto out_err;
7609         }
7610
7611         while (1) {
7612                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
7613                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
7614                                            NL80211_CMD_TESTMODE);
7615                 struct nlattr *tmdata;
7616
7617                 if (!hdr)
7618                         break;
7619
7620                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
7621                         genlmsg_cancel(skb, hdr);
7622                         break;
7623                 }
7624
7625                 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
7626                 if (!tmdata) {
7627                         genlmsg_cancel(skb, hdr);
7628                         break;
7629                 }
7630                 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
7631                 nla_nest_end(skb, tmdata);
7632
7633                 if (err == -ENOBUFS || err == -ENOENT) {
7634                         genlmsg_cancel(skb, hdr);
7635                         break;
7636                 } else if (err) {
7637                         genlmsg_cancel(skb, hdr);
7638                         goto out_err;
7639                 }
7640
7641                 genlmsg_end(skb, hdr);
7642         }
7643
7644         err = skb->len;
7645         /* see above */
7646         cb->args[0] = phy_idx + 1;
7647  out_err:
7648         rtnl_unlock();
7649         return err;
7650 }
7651 #endif
7652
7653 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
7654 {
7655         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7656         struct net_device *dev = info->user_ptr[1];
7657         struct cfg80211_connect_params connect;
7658         struct wiphy *wiphy;
7659         struct cfg80211_cached_keys *connkeys = NULL;
7660         int err;
7661
7662         memset(&connect, 0, sizeof(connect));
7663
7664         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7665                 return -EINVAL;
7666
7667         if (!info->attrs[NL80211_ATTR_SSID] ||
7668             !nla_len(info->attrs[NL80211_ATTR_SSID]))
7669                 return -EINVAL;
7670
7671         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
7672                 connect.auth_type =
7673                         nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
7674                 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
7675                                              NL80211_CMD_CONNECT))
7676                         return -EINVAL;
7677         } else
7678                 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
7679
7680         connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
7681
7682         err = nl80211_crypto_settings(rdev, info, &connect.crypto,
7683                                       NL80211_MAX_NR_CIPHER_SUITES);
7684         if (err)
7685                 return err;
7686
7687         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7688             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7689                 return -EOPNOTSUPP;
7690
7691         wiphy = &rdev->wiphy;
7692
7693         connect.bg_scan_period = -1;
7694         if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
7695                 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
7696                 connect.bg_scan_period =
7697                         nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
7698         }
7699
7700         if (info->attrs[NL80211_ATTR_MAC])
7701                 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7702         else if (info->attrs[NL80211_ATTR_MAC_HINT])
7703                 connect.bssid_hint =
7704                         nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
7705         connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7706         connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7707
7708         if (info->attrs[NL80211_ATTR_IE]) {
7709                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7710                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7711         }
7712
7713         if (info->attrs[NL80211_ATTR_USE_MFP]) {
7714                 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
7715                 if (connect.mfp != NL80211_MFP_REQUIRED &&
7716                     connect.mfp != NL80211_MFP_NO)
7717                         return -EINVAL;
7718         } else {
7719                 connect.mfp = NL80211_MFP_NO;
7720         }
7721
7722         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
7723                 connect.channel = nl80211_get_valid_chan(
7724                         wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]);
7725                 if (!connect.channel)
7726                         return -EINVAL;
7727         } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
7728                 connect.channel_hint = nl80211_get_valid_chan(
7729                         wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
7730                 if (!connect.channel_hint)
7731                         return -EINVAL;
7732         }
7733
7734         if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
7735                 connkeys = nl80211_parse_connkeys(rdev,
7736                                           info->attrs[NL80211_ATTR_KEYS], NULL);
7737                 if (IS_ERR(connkeys))
7738                         return PTR_ERR(connkeys);
7739         }
7740
7741         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
7742                 connect.flags |= ASSOC_REQ_DISABLE_HT;
7743
7744         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7745                 memcpy(&connect.ht_capa_mask,
7746                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
7747                        sizeof(connect.ht_capa_mask));
7748
7749         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
7750                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
7751                         kzfree(connkeys);
7752                         return -EINVAL;
7753                 }
7754                 memcpy(&connect.ht_capa,
7755                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7756                        sizeof(connect.ht_capa));
7757         }
7758
7759         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
7760                 connect.flags |= ASSOC_REQ_DISABLE_VHT;
7761
7762         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
7763                 memcpy(&connect.vht_capa_mask,
7764                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
7765                        sizeof(connect.vht_capa_mask));
7766
7767         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
7768                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
7769                         kzfree(connkeys);
7770                         return -EINVAL;
7771                 }
7772                 memcpy(&connect.vht_capa,
7773                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
7774                        sizeof(connect.vht_capa));
7775         }
7776
7777         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
7778                 if (!(rdev->wiphy.features &
7779                       NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) ||
7780                     !(rdev->wiphy.features & NL80211_FEATURE_QUIET))
7781                         return -EINVAL;
7782                 connect.flags |= ASSOC_REQ_USE_RRM;
7783         }
7784
7785         wdev_lock(dev->ieee80211_ptr);
7786         err = cfg80211_connect(rdev, dev, &connect, connkeys, NULL);
7787         wdev_unlock(dev->ieee80211_ptr);
7788         if (err)
7789                 kzfree(connkeys);
7790         return err;
7791 }
7792
7793 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
7794 {
7795         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7796         struct net_device *dev = info->user_ptr[1];
7797         u16 reason;
7798         int ret;
7799
7800         if (!info->attrs[NL80211_ATTR_REASON_CODE])
7801                 reason = WLAN_REASON_DEAUTH_LEAVING;
7802         else
7803                 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7804
7805         if (reason == 0)
7806                 return -EINVAL;
7807
7808         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7809             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7810                 return -EOPNOTSUPP;
7811
7812         wdev_lock(dev->ieee80211_ptr);
7813         ret = cfg80211_disconnect(rdev, dev, reason, true);
7814         wdev_unlock(dev->ieee80211_ptr);
7815         return ret;
7816 }
7817
7818 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
7819 {
7820         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7821         struct net *net;
7822         int err;
7823
7824         if (info->attrs[NL80211_ATTR_PID]) {
7825                 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
7826
7827                 net = get_net_ns_by_pid(pid);
7828         } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
7829                 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
7830
7831                 net = get_net_ns_by_fd(fd);
7832         } else {
7833                 return -EINVAL;
7834         }
7835
7836         if (IS_ERR(net))
7837                 return PTR_ERR(net);
7838
7839         err = 0;
7840
7841         /* check if anything to do */
7842         if (!net_eq(wiphy_net(&rdev->wiphy), net))
7843                 err = cfg80211_switch_netns(rdev, net);
7844
7845         put_net(net);
7846         return err;
7847 }
7848
7849 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
7850 {
7851         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7852         int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
7853                         struct cfg80211_pmksa *pmksa) = NULL;
7854         struct net_device *dev = info->user_ptr[1];
7855         struct cfg80211_pmksa pmksa;
7856
7857         memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
7858
7859         if (!info->attrs[NL80211_ATTR_MAC])
7860                 return -EINVAL;
7861
7862         if (!info->attrs[NL80211_ATTR_PMKID])
7863                 return -EINVAL;
7864
7865         pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
7866         pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7867
7868         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7869             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7870                 return -EOPNOTSUPP;
7871
7872         switch (info->genlhdr->cmd) {
7873         case NL80211_CMD_SET_PMKSA:
7874                 rdev_ops = rdev->ops->set_pmksa;
7875                 break;
7876         case NL80211_CMD_DEL_PMKSA:
7877                 rdev_ops = rdev->ops->del_pmksa;
7878                 break;
7879         default:
7880                 WARN_ON(1);
7881                 break;
7882         }
7883
7884         if (!rdev_ops)
7885                 return -EOPNOTSUPP;
7886
7887         return rdev_ops(&rdev->wiphy, dev, &pmksa);
7888 }
7889
7890 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
7891 {
7892         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7893         struct net_device *dev = info->user_ptr[1];
7894
7895         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7896             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7897                 return -EOPNOTSUPP;
7898
7899         if (!rdev->ops->flush_pmksa)
7900                 return -EOPNOTSUPP;
7901
7902         return rdev_flush_pmksa(rdev, dev);
7903 }
7904
7905 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
7906 {
7907         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7908         struct net_device *dev = info->user_ptr[1];
7909         u8 action_code, dialog_token;
7910         u32 peer_capability = 0;
7911         u16 status_code;
7912         u8 *peer;
7913         bool initiator;
7914
7915         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
7916             !rdev->ops->tdls_mgmt)
7917                 return -EOPNOTSUPP;
7918
7919         if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
7920             !info->attrs[NL80211_ATTR_STATUS_CODE] ||
7921             !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
7922             !info->attrs[NL80211_ATTR_IE] ||
7923             !info->attrs[NL80211_ATTR_MAC])
7924                 return -EINVAL;
7925
7926         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
7927         action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
7928         status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
7929         dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
7930         initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
7931         if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
7932                 peer_capability =
7933                         nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
7934
7935         return rdev_tdls_mgmt(rdev, dev, peer, action_code,
7936                               dialog_token, status_code, peer_capability,
7937                               initiator,
7938                               nla_data(info->attrs[NL80211_ATTR_IE]),
7939                               nla_len(info->attrs[NL80211_ATTR_IE]));
7940 }
7941
7942 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
7943 {
7944         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7945         struct net_device *dev = info->user_ptr[1];
7946         enum nl80211_tdls_operation operation;
7947         u8 *peer;
7948
7949         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
7950             !rdev->ops->tdls_oper)
7951                 return -EOPNOTSUPP;
7952
7953         if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
7954             !info->attrs[NL80211_ATTR_MAC])
7955                 return -EINVAL;
7956
7957         operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
7958         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
7959
7960         return rdev_tdls_oper(rdev, dev, peer, operation);
7961 }
7962
7963 static int nl80211_remain_on_channel(struct sk_buff *skb,
7964                                      struct genl_info *info)
7965 {
7966         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7967         struct wireless_dev *wdev = info->user_ptr[1];
7968         struct cfg80211_chan_def chandef;
7969         struct sk_buff *msg;
7970         void *hdr;
7971         u64 cookie;
7972         u32 duration;
7973         int err;
7974
7975         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
7976             !info->attrs[NL80211_ATTR_DURATION])
7977                 return -EINVAL;
7978
7979         duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
7980
7981         if (!rdev->ops->remain_on_channel ||
7982             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
7983                 return -EOPNOTSUPP;
7984
7985         /*
7986          * We should be on that channel for at least a minimum amount of
7987          * time (10ms) but no longer than the driver supports.
7988          */
7989         if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
7990             duration > rdev->wiphy.max_remain_on_channel_duration)
7991                 return -EINVAL;
7992
7993         err = nl80211_parse_chandef(rdev, info, &chandef);
7994         if (err)
7995                 return err;
7996
7997         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7998         if (!msg)
7999                 return -ENOMEM;
8000
8001         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8002                              NL80211_CMD_REMAIN_ON_CHANNEL);
8003         if (!hdr) {
8004                 err = -ENOBUFS;
8005                 goto free_msg;
8006         }
8007
8008         err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
8009                                      duration, &cookie);
8010
8011         if (err)
8012                 goto free_msg;
8013
8014         if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
8015                 goto nla_put_failure;
8016
8017         genlmsg_end(msg, hdr);
8018
8019         return genlmsg_reply(msg, info);
8020
8021  nla_put_failure:
8022         err = -ENOBUFS;
8023  free_msg:
8024         nlmsg_free(msg);
8025         return err;
8026 }
8027
8028 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
8029                                             struct genl_info *info)
8030 {
8031         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8032         struct wireless_dev *wdev = info->user_ptr[1];
8033         u64 cookie;
8034
8035         if (!info->attrs[NL80211_ATTR_COOKIE])
8036                 return -EINVAL;
8037
8038         if (!rdev->ops->cancel_remain_on_channel)
8039                 return -EOPNOTSUPP;
8040
8041         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
8042
8043         return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
8044 }
8045
8046 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
8047                            u8 *rates, u8 rates_len)
8048 {
8049         u8 i;
8050         u32 mask = 0;
8051
8052         for (i = 0; i < rates_len; i++) {
8053                 int rate = (rates[i] & 0x7f) * 5;
8054                 int ridx;
8055                 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
8056                         struct ieee80211_rate *srate =
8057                                 &sband->bitrates[ridx];
8058                         if (rate == srate->bitrate) {
8059                                 mask |= 1 << ridx;
8060                                 break;
8061                         }
8062                 }
8063                 if (ridx == sband->n_bitrates)
8064                         return 0; /* rate not found */
8065         }
8066
8067         return mask;
8068 }
8069
8070 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
8071                                u8 *rates, u8 rates_len,
8072                                u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
8073 {
8074         u8 i;
8075
8076         memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
8077
8078         for (i = 0; i < rates_len; i++) {
8079                 int ridx, rbit;
8080
8081                 ridx = rates[i] / 8;
8082                 rbit = BIT(rates[i] % 8);
8083
8084                 /* check validity */
8085                 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
8086                         return false;
8087
8088                 /* check availability */
8089                 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
8090                         mcs[ridx] |= rbit;
8091                 else
8092                         return false;
8093         }
8094
8095         return true;
8096 }
8097
8098 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
8099 {
8100         u16 mcs_mask = 0;
8101
8102         switch (vht_mcs_map) {
8103         case IEEE80211_VHT_MCS_NOT_SUPPORTED:
8104                 break;
8105         case IEEE80211_VHT_MCS_SUPPORT_0_7:
8106                 mcs_mask = 0x00FF;
8107                 break;
8108         case IEEE80211_VHT_MCS_SUPPORT_0_8:
8109                 mcs_mask = 0x01FF;
8110                 break;
8111         case IEEE80211_VHT_MCS_SUPPORT_0_9:
8112                 mcs_mask = 0x03FF;
8113                 break;
8114         default:
8115                 break;
8116         }
8117
8118         return mcs_mask;
8119 }
8120
8121 static void vht_build_mcs_mask(u16 vht_mcs_map,
8122                                u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
8123 {
8124         u8 nss;
8125
8126         for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
8127                 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
8128                 vht_mcs_map >>= 2;
8129         }
8130 }
8131
8132 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
8133                              struct nl80211_txrate_vht *txrate,
8134                              u16 mcs[NL80211_VHT_NSS_MAX])
8135 {
8136         u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
8137         u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
8138         u8 i;
8139
8140         if (!sband->vht_cap.vht_supported)
8141                 return false;
8142
8143         memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
8144
8145         /* Build vht_mcs_mask from VHT capabilities */
8146         vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
8147
8148         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
8149                 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
8150                         mcs[i] = txrate->mcs[i];
8151                 else
8152                         return false;
8153         }
8154
8155         return true;
8156 }
8157
8158 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
8159         [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
8160                                     .len = NL80211_MAX_SUPP_RATES },
8161         [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
8162                                 .len = NL80211_MAX_SUPP_HT_RATES },
8163         [NL80211_TXRATE_VHT] = { .len = sizeof(struct nl80211_txrate_vht)},
8164         [NL80211_TXRATE_GI] = { .type = NLA_U8 },
8165 };
8166
8167 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
8168                                        struct genl_info *info)
8169 {
8170         struct nlattr *tb[NL80211_TXRATE_MAX + 1];
8171         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8172         struct cfg80211_bitrate_mask mask;
8173         int rem, i;
8174         struct net_device *dev = info->user_ptr[1];
8175         struct nlattr *tx_rates;
8176         struct ieee80211_supported_band *sband;
8177         u16 vht_tx_mcs_map;
8178
8179         if (!rdev->ops->set_bitrate_mask)
8180                 return -EOPNOTSUPP;
8181
8182         memset(&mask, 0, sizeof(mask));
8183         /* Default to all rates enabled */
8184         for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
8185                 sband = rdev->wiphy.bands[i];
8186
8187                 if (!sband)
8188                         continue;
8189
8190                 mask.control[i].legacy = (1 << sband->n_bitrates) - 1;
8191                 memcpy(mask.control[i].ht_mcs,
8192                        sband->ht_cap.mcs.rx_mask,
8193                        sizeof(mask.control[i].ht_mcs));
8194
8195                 if (!sband->vht_cap.vht_supported)
8196                         continue;
8197
8198                 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
8199                 vht_build_mcs_mask(vht_tx_mcs_map, mask.control[i].vht_mcs);
8200         }
8201
8202         /* if no rates are given set it back to the defaults */
8203         if (!info->attrs[NL80211_ATTR_TX_RATES])
8204                 goto out;
8205
8206         /*
8207          * The nested attribute uses enum nl80211_band as the index. This maps
8208          * directly to the enum ieee80211_band values used in cfg80211.
8209          */
8210         BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
8211         nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) {
8212                 enum ieee80211_band band = nla_type(tx_rates);
8213                 int err;
8214
8215                 if (band < 0 || band >= IEEE80211_NUM_BANDS)
8216                         return -EINVAL;
8217                 sband = rdev->wiphy.bands[band];
8218                 if (sband == NULL)
8219                         return -EINVAL;
8220                 err = nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
8221                                 nla_len(tx_rates), nl80211_txattr_policy);
8222                 if (err)
8223                         return err;
8224                 if (tb[NL80211_TXRATE_LEGACY]) {
8225                         mask.control[band].legacy = rateset_to_mask(
8226                                 sband,
8227                                 nla_data(tb[NL80211_TXRATE_LEGACY]),
8228                                 nla_len(tb[NL80211_TXRATE_LEGACY]));
8229                         if ((mask.control[band].legacy == 0) &&
8230                             nla_len(tb[NL80211_TXRATE_LEGACY]))
8231                                 return -EINVAL;
8232                 }
8233                 if (tb[NL80211_TXRATE_HT]) {
8234                         if (!ht_rateset_to_mask(
8235                                         sband,
8236                                         nla_data(tb[NL80211_TXRATE_HT]),
8237                                         nla_len(tb[NL80211_TXRATE_HT]),
8238                                         mask.control[band].ht_mcs))
8239                                 return -EINVAL;
8240                 }
8241                 if (tb[NL80211_TXRATE_VHT]) {
8242                         if (!vht_set_mcs_mask(
8243                                         sband,
8244                                         nla_data(tb[NL80211_TXRATE_VHT]),
8245                                         mask.control[band].vht_mcs))
8246                                 return -EINVAL;
8247                 }
8248                 if (tb[NL80211_TXRATE_GI]) {
8249                         mask.control[band].gi =
8250                                 nla_get_u8(tb[NL80211_TXRATE_GI]);
8251                         if (mask.control[band].gi > NL80211_TXRATE_FORCE_LGI)
8252                                 return -EINVAL;
8253                 }
8254
8255                 if (mask.control[band].legacy == 0) {
8256                         /* don't allow empty legacy rates if HT or VHT
8257                          * are not even supported.
8258                          */
8259                         if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
8260                               rdev->wiphy.bands[band]->vht_cap.vht_supported))
8261                                 return -EINVAL;
8262
8263                         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
8264                                 if (mask.control[band].ht_mcs[i])
8265                                         goto out;
8266
8267                         for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
8268                                 if (mask.control[band].vht_mcs[i])
8269                                         goto out;
8270
8271                         /* legacy and mcs rates may not be both empty */
8272                         return -EINVAL;
8273                 }
8274         }
8275
8276 out:
8277         return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
8278 }
8279
8280 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
8281 {
8282         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8283         struct wireless_dev *wdev = info->user_ptr[1];
8284         u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
8285
8286         if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
8287                 return -EINVAL;
8288
8289         if (info->attrs[NL80211_ATTR_FRAME_TYPE])
8290                 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
8291
8292         switch (wdev->iftype) {
8293         case NL80211_IFTYPE_STATION:
8294         case NL80211_IFTYPE_ADHOC:
8295         case NL80211_IFTYPE_P2P_CLIENT:
8296         case NL80211_IFTYPE_AP:
8297         case NL80211_IFTYPE_AP_VLAN:
8298         case NL80211_IFTYPE_MESH_POINT:
8299         case NL80211_IFTYPE_P2P_GO:
8300         case NL80211_IFTYPE_P2P_DEVICE:
8301                 break;
8302         default:
8303                 return -EOPNOTSUPP;
8304         }
8305
8306         /* not much point in registering if we can't reply */
8307         if (!rdev->ops->mgmt_tx)
8308                 return -EOPNOTSUPP;
8309
8310         return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
8311                         nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
8312                         nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
8313 }
8314
8315 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
8316 {
8317         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8318         struct wireless_dev *wdev = info->user_ptr[1];
8319         struct cfg80211_chan_def chandef;
8320         int err;
8321         void *hdr = NULL;
8322         u64 cookie;
8323         struct sk_buff *msg = NULL;
8324         struct cfg80211_mgmt_tx_params params = {
8325                 .dont_wait_for_ack =
8326                         info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
8327         };
8328
8329         if (!info->attrs[NL80211_ATTR_FRAME])
8330                 return -EINVAL;
8331
8332         if (!rdev->ops->mgmt_tx)
8333                 return -EOPNOTSUPP;
8334
8335         switch (wdev->iftype) {
8336         case NL80211_IFTYPE_P2P_DEVICE:
8337                 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
8338                         return -EINVAL;
8339         case NL80211_IFTYPE_STATION:
8340         case NL80211_IFTYPE_ADHOC:
8341         case NL80211_IFTYPE_P2P_CLIENT:
8342         case NL80211_IFTYPE_AP:
8343         case NL80211_IFTYPE_AP_VLAN:
8344         case NL80211_IFTYPE_MESH_POINT:
8345         case NL80211_IFTYPE_P2P_GO:
8346                 break;
8347         default:
8348                 return -EOPNOTSUPP;
8349         }
8350
8351         if (info->attrs[NL80211_ATTR_DURATION]) {
8352                 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
8353                         return -EINVAL;
8354                 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
8355
8356                 /*
8357                  * We should wait on the channel for at least a minimum amount
8358                  * of time (10ms) but no longer than the driver supports.
8359                  */
8360                 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
8361                     params.wait > rdev->wiphy.max_remain_on_channel_duration)
8362                         return -EINVAL;
8363
8364         }
8365
8366         params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
8367
8368         if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
8369                 return -EINVAL;
8370
8371         params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
8372
8373         /* get the channel if any has been specified, otherwise pass NULL to
8374          * the driver. The latter will use the current one
8375          */
8376         chandef.chan = NULL;
8377         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
8378                 err = nl80211_parse_chandef(rdev, info, &chandef);
8379                 if (err)
8380                         return err;
8381         }
8382
8383         if (!chandef.chan && params.offchan)
8384                 return -EINVAL;
8385
8386         params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
8387         params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
8388
8389         if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
8390                 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
8391                 int i;
8392
8393                 if (len % sizeof(u16))
8394                         return -EINVAL;
8395
8396                 params.n_csa_offsets = len / sizeof(u16);
8397                 params.csa_offsets =
8398                         nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
8399
8400                 /* check that all the offsets fit the frame */
8401                 for (i = 0; i < params.n_csa_offsets; i++) {
8402                         if (params.csa_offsets[i] >= params.len)
8403                                 return -EINVAL;
8404                 }
8405         }
8406
8407         if (!params.dont_wait_for_ack) {
8408                 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8409                 if (!msg)
8410                         return -ENOMEM;
8411
8412                 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8413                                      NL80211_CMD_FRAME);
8414                 if (!hdr) {
8415                         err = -ENOBUFS;
8416                         goto free_msg;
8417                 }
8418         }
8419
8420         params.chan = chandef.chan;
8421         err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
8422         if (err)
8423                 goto free_msg;
8424
8425         if (msg) {
8426                 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
8427                         goto nla_put_failure;
8428
8429                 genlmsg_end(msg, hdr);
8430                 return genlmsg_reply(msg, info);
8431         }
8432
8433         return 0;
8434
8435  nla_put_failure:
8436         err = -ENOBUFS;
8437  free_msg:
8438         nlmsg_free(msg);
8439         return err;
8440 }
8441
8442 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
8443 {
8444         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8445         struct wireless_dev *wdev = info->user_ptr[1];
8446         u64 cookie;
8447
8448         if (!info->attrs[NL80211_ATTR_COOKIE])
8449                 return -EINVAL;
8450
8451         if (!rdev->ops->mgmt_tx_cancel_wait)
8452                 return -EOPNOTSUPP;
8453
8454         switch (wdev->iftype) {
8455         case NL80211_IFTYPE_STATION:
8456         case NL80211_IFTYPE_ADHOC:
8457         case NL80211_IFTYPE_P2P_CLIENT:
8458         case NL80211_IFTYPE_AP:
8459         case NL80211_IFTYPE_AP_VLAN:
8460         case NL80211_IFTYPE_P2P_GO:
8461         case NL80211_IFTYPE_P2P_DEVICE:
8462                 break;
8463         default:
8464                 return -EOPNOTSUPP;
8465         }
8466
8467         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
8468
8469         return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
8470 }
8471
8472 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
8473 {
8474         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8475         struct wireless_dev *wdev;
8476         struct net_device *dev = info->user_ptr[1];
8477         u8 ps_state;
8478         bool state;
8479         int err;
8480
8481         if (!info->attrs[NL80211_ATTR_PS_STATE])
8482                 return -EINVAL;
8483
8484         ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
8485
8486         if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
8487                 return -EINVAL;
8488
8489         wdev = dev->ieee80211_ptr;
8490
8491         if (!rdev->ops->set_power_mgmt)
8492                 return -EOPNOTSUPP;
8493
8494         state = (ps_state == NL80211_PS_ENABLED) ? true : false;
8495
8496         if (state == wdev->ps)
8497                 return 0;
8498
8499         err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
8500         if (!err)
8501                 wdev->ps = state;
8502         return err;
8503 }
8504
8505 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
8506 {
8507         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8508         enum nl80211_ps_state ps_state;
8509         struct wireless_dev *wdev;
8510         struct net_device *dev = info->user_ptr[1];
8511         struct sk_buff *msg;
8512         void *hdr;
8513         int err;
8514
8515         wdev = dev->ieee80211_ptr;
8516
8517         if (!rdev->ops->set_power_mgmt)
8518                 return -EOPNOTSUPP;
8519
8520         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8521         if (!msg)
8522                 return -ENOMEM;
8523
8524         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8525                              NL80211_CMD_GET_POWER_SAVE);
8526         if (!hdr) {
8527                 err = -ENOBUFS;
8528                 goto free_msg;
8529         }
8530
8531         if (wdev->ps)
8532                 ps_state = NL80211_PS_ENABLED;
8533         else
8534                 ps_state = NL80211_PS_DISABLED;
8535
8536         if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
8537                 goto nla_put_failure;
8538
8539         genlmsg_end(msg, hdr);
8540         return genlmsg_reply(msg, info);
8541
8542  nla_put_failure:
8543         err = -ENOBUFS;
8544  free_msg:
8545         nlmsg_free(msg);
8546         return err;
8547 }
8548
8549 static const struct nla_policy
8550 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
8551         [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
8552         [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
8553         [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
8554         [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
8555         [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
8556         [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
8557 };
8558
8559 static int nl80211_set_cqm_txe(struct genl_info *info,
8560                                u32 rate, u32 pkts, u32 intvl)
8561 {
8562         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8563         struct net_device *dev = info->user_ptr[1];
8564         struct wireless_dev *wdev = dev->ieee80211_ptr;
8565
8566         if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
8567                 return -EINVAL;
8568
8569         if (!rdev->ops->set_cqm_txe_config)
8570                 return -EOPNOTSUPP;
8571
8572         if (wdev->iftype != NL80211_IFTYPE_STATION &&
8573             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
8574                 return -EOPNOTSUPP;
8575
8576         return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
8577 }
8578
8579 static int nl80211_set_cqm_rssi(struct genl_info *info,
8580                                 s32 threshold, u32 hysteresis)
8581 {
8582         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8583         struct net_device *dev = info->user_ptr[1];
8584         struct wireless_dev *wdev = dev->ieee80211_ptr;
8585
8586         if (threshold > 0)
8587                 return -EINVAL;
8588
8589         /* disabling - hysteresis should also be zero then */
8590         if (threshold == 0)
8591                 hysteresis = 0;
8592
8593         if (!rdev->ops->set_cqm_rssi_config)
8594                 return -EOPNOTSUPP;
8595
8596         if (wdev->iftype != NL80211_IFTYPE_STATION &&
8597             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
8598                 return -EOPNOTSUPP;
8599
8600         return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis);
8601 }
8602
8603 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
8604 {
8605         struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
8606         struct nlattr *cqm;
8607         int err;
8608
8609         cqm = info->attrs[NL80211_ATTR_CQM];
8610         if (!cqm)
8611                 return -EINVAL;
8612
8613         err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
8614                                nl80211_attr_cqm_policy);
8615         if (err)
8616                 return err;
8617
8618         if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
8619             attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
8620                 s32 threshold = nla_get_s32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
8621                 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
8622
8623                 return nl80211_set_cqm_rssi(info, threshold, hysteresis);
8624         }
8625
8626         if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
8627             attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
8628             attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
8629                 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
8630                 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
8631                 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
8632
8633                 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
8634         }
8635
8636         return -EINVAL;
8637 }
8638
8639 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
8640 {
8641         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8642         struct net_device *dev = info->user_ptr[1];
8643         struct ocb_setup setup = {};
8644         int err;
8645
8646         err = nl80211_parse_chandef(rdev, info, &setup.chandef);
8647         if (err)
8648                 return err;
8649
8650         return cfg80211_join_ocb(rdev, dev, &setup);
8651 }
8652
8653 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
8654 {
8655         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8656         struct net_device *dev = info->user_ptr[1];
8657
8658         return cfg80211_leave_ocb(rdev, dev);
8659 }
8660
8661 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
8662 {
8663         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8664         struct net_device *dev = info->user_ptr[1];
8665         struct mesh_config cfg;
8666         struct mesh_setup setup;
8667         int err;
8668
8669         /* start with default */
8670         memcpy(&cfg, &default_mesh_config, sizeof(cfg));
8671         memcpy(&setup, &default_mesh_setup, sizeof(setup));
8672
8673         if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
8674                 /* and parse parameters if given */
8675                 err = nl80211_parse_mesh_config(info, &cfg, NULL);
8676                 if (err)
8677                         return err;
8678         }
8679
8680         if (!info->attrs[NL80211_ATTR_MESH_ID] ||
8681             !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
8682                 return -EINVAL;
8683
8684         setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
8685         setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
8686
8687         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
8688             !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
8689                             nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
8690                         return -EINVAL;
8691
8692         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
8693                 setup.beacon_interval =
8694                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
8695                 if (setup.beacon_interval < 10 ||
8696                     setup.beacon_interval > 10000)
8697                         return -EINVAL;
8698         }
8699
8700         if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
8701                 setup.dtim_period =
8702                         nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
8703                 if (setup.dtim_period < 1 || setup.dtim_period > 100)
8704                         return -EINVAL;
8705         }
8706
8707         if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
8708                 /* parse additional setup parameters if given */
8709                 err = nl80211_parse_mesh_setup(info, &setup);
8710                 if (err)
8711                         return err;
8712         }
8713
8714         if (setup.user_mpm)
8715                 cfg.auto_open_plinks = false;
8716
8717         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
8718                 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
8719                 if (err)
8720                         return err;
8721         } else {
8722                 /* cfg80211_join_mesh() will sort it out */
8723                 setup.chandef.chan = NULL;
8724         }
8725
8726         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
8727                 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8728                 int n_rates =
8729                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8730                 struct ieee80211_supported_band *sband;
8731
8732                 if (!setup.chandef.chan)
8733                         return -EINVAL;
8734
8735                 sband = rdev->wiphy.bands[setup.chandef.chan->band];
8736
8737                 err = ieee80211_get_ratemask(sband, rates, n_rates,
8738                                              &setup.basic_rates);
8739                 if (err)
8740                         return err;
8741         }
8742
8743         return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
8744 }
8745
8746 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
8747 {
8748         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8749         struct net_device *dev = info->user_ptr[1];
8750
8751         return cfg80211_leave_mesh(rdev, dev);
8752 }
8753
8754 #ifdef CONFIG_PM
8755 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
8756                                         struct cfg80211_registered_device *rdev)
8757 {
8758         struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
8759         struct nlattr *nl_pats, *nl_pat;
8760         int i, pat_len;
8761
8762         if (!wowlan->n_patterns)
8763                 return 0;
8764
8765         nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
8766         if (!nl_pats)
8767                 return -ENOBUFS;
8768
8769         for (i = 0; i < wowlan->n_patterns; i++) {
8770                 nl_pat = nla_nest_start(msg, i + 1);
8771                 if (!nl_pat)
8772                         return -ENOBUFS;
8773                 pat_len = wowlan->patterns[i].pattern_len;
8774                 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
8775                             wowlan->patterns[i].mask) ||
8776                     nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
8777                             wowlan->patterns[i].pattern) ||
8778                     nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
8779                                 wowlan->patterns[i].pkt_offset))
8780                         return -ENOBUFS;
8781                 nla_nest_end(msg, nl_pat);
8782         }
8783         nla_nest_end(msg, nl_pats);
8784
8785         return 0;
8786 }
8787
8788 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
8789                                    struct cfg80211_wowlan_tcp *tcp)
8790 {
8791         struct nlattr *nl_tcp;
8792
8793         if (!tcp)
8794                 return 0;
8795
8796         nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
8797         if (!nl_tcp)
8798                 return -ENOBUFS;
8799
8800         if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
8801             nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
8802             nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
8803             nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
8804             nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
8805             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
8806                     tcp->payload_len, tcp->payload) ||
8807             nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
8808                         tcp->data_interval) ||
8809             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
8810                     tcp->wake_len, tcp->wake_data) ||
8811             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
8812                     DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
8813                 return -ENOBUFS;
8814
8815         if (tcp->payload_seq.len &&
8816             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
8817                     sizeof(tcp->payload_seq), &tcp->payload_seq))
8818                 return -ENOBUFS;
8819
8820         if (tcp->payload_tok.len &&
8821             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
8822                     sizeof(tcp->payload_tok) + tcp->tokens_size,
8823                     &tcp->payload_tok))
8824                 return -ENOBUFS;
8825
8826         nla_nest_end(msg, nl_tcp);
8827
8828         return 0;
8829 }
8830
8831 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
8832                                   struct cfg80211_sched_scan_request *req)
8833 {
8834         struct nlattr *nd, *freqs, *matches, *match;
8835         int i;
8836
8837         if (!req)
8838                 return 0;
8839
8840         nd = nla_nest_start(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
8841         if (!nd)
8842                 return -ENOBUFS;
8843
8844         if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL, req->interval))
8845                 return -ENOBUFS;
8846
8847         if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
8848                 return -ENOBUFS;
8849
8850         freqs = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
8851         if (!freqs)
8852                 return -ENOBUFS;
8853
8854         for (i = 0; i < req->n_channels; i++)
8855                 nla_put_u32(msg, i, req->channels[i]->center_freq);
8856
8857         nla_nest_end(msg, freqs);
8858
8859         if (req->n_match_sets) {
8860                 matches = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_MATCH);
8861                 for (i = 0; i < req->n_match_sets; i++) {
8862                         match = nla_nest_start(msg, i);
8863                         nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
8864                                 req->match_sets[i].ssid.ssid_len,
8865                                 req->match_sets[i].ssid.ssid);
8866                         nla_nest_end(msg, match);
8867                 }
8868                 nla_nest_end(msg, matches);
8869         }
8870
8871         nla_nest_end(msg, nd);
8872
8873         return 0;
8874 }
8875
8876 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
8877 {
8878         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8879         struct sk_buff *msg;
8880         void *hdr;
8881         u32 size = NLMSG_DEFAULT_SIZE;
8882
8883         if (!rdev->wiphy.wowlan)
8884                 return -EOPNOTSUPP;
8885
8886         if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
8887                 /* adjust size to have room for all the data */
8888                 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
8889                         rdev->wiphy.wowlan_config->tcp->payload_len +
8890                         rdev->wiphy.wowlan_config->tcp->wake_len +
8891                         rdev->wiphy.wowlan_config->tcp->wake_len / 8;
8892         }
8893
8894         msg = nlmsg_new(size, GFP_KERNEL);
8895         if (!msg)
8896                 return -ENOMEM;
8897
8898         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8899                              NL80211_CMD_GET_WOWLAN);
8900         if (!hdr)
8901                 goto nla_put_failure;
8902
8903         if (rdev->wiphy.wowlan_config) {
8904                 struct nlattr *nl_wowlan;
8905
8906                 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
8907                 if (!nl_wowlan)
8908                         goto nla_put_failure;
8909
8910                 if ((rdev->wiphy.wowlan_config->any &&
8911                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
8912                     (rdev->wiphy.wowlan_config->disconnect &&
8913                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
8914                     (rdev->wiphy.wowlan_config->magic_pkt &&
8915                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
8916                     (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
8917                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
8918                     (rdev->wiphy.wowlan_config->eap_identity_req &&
8919                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
8920                     (rdev->wiphy.wowlan_config->four_way_handshake &&
8921                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
8922                     (rdev->wiphy.wowlan_config->rfkill_release &&
8923                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
8924                         goto nla_put_failure;
8925
8926                 if (nl80211_send_wowlan_patterns(msg, rdev))
8927                         goto nla_put_failure;
8928
8929                 if (nl80211_send_wowlan_tcp(msg,
8930                                             rdev->wiphy.wowlan_config->tcp))
8931                         goto nla_put_failure;
8932
8933                 if (nl80211_send_wowlan_nd(
8934                             msg,
8935                             rdev->wiphy.wowlan_config->nd_config))
8936                         goto nla_put_failure;
8937
8938                 nla_nest_end(msg, nl_wowlan);
8939         }
8940
8941         genlmsg_end(msg, hdr);
8942         return genlmsg_reply(msg, info);
8943
8944 nla_put_failure:
8945         nlmsg_free(msg);
8946         return -ENOBUFS;
8947 }
8948
8949 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
8950                                     struct nlattr *attr,
8951                                     struct cfg80211_wowlan *trig)
8952 {
8953         struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
8954         struct cfg80211_wowlan_tcp *cfg;
8955         struct nl80211_wowlan_tcp_data_token *tok = NULL;
8956         struct nl80211_wowlan_tcp_data_seq *seq = NULL;
8957         u32 size;
8958         u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
8959         int err, port;
8960
8961         if (!rdev->wiphy.wowlan->tcp)
8962                 return -EINVAL;
8963
8964         err = nla_parse(tb, MAX_NL80211_WOWLAN_TCP,
8965                         nla_data(attr), nla_len(attr),
8966                         nl80211_wowlan_tcp_policy);
8967         if (err)
8968                 return err;
8969
8970         if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
8971             !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
8972             !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
8973             !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
8974             !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
8975             !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
8976             !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
8977             !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
8978                 return -EINVAL;
8979
8980         data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
8981         if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
8982                 return -EINVAL;
8983
8984         if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
8985                         rdev->wiphy.wowlan->tcp->data_interval_max ||
8986             nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
8987                 return -EINVAL;
8988
8989         wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
8990         if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
8991                 return -EINVAL;
8992
8993         wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
8994         if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
8995                 return -EINVAL;
8996
8997         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
8998                 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
8999
9000                 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
9001                 tokens_size = tokln - sizeof(*tok);
9002
9003                 if (!tok->len || tokens_size % tok->len)
9004                         return -EINVAL;
9005                 if (!rdev->wiphy.wowlan->tcp->tok)
9006                         return -EINVAL;
9007                 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
9008                         return -EINVAL;
9009                 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
9010                         return -EINVAL;
9011                 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
9012                         return -EINVAL;
9013                 if (tok->offset + tok->len > data_size)
9014                         return -EINVAL;
9015         }
9016
9017         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
9018                 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
9019                 if (!rdev->wiphy.wowlan->tcp->seq)
9020                         return -EINVAL;
9021                 if (seq->len == 0 || seq->len > 4)
9022                         return -EINVAL;
9023                 if (seq->len + seq->offset > data_size)
9024                         return -EINVAL;
9025         }
9026
9027         size = sizeof(*cfg);
9028         size += data_size;
9029         size += wake_size + wake_mask_size;
9030         size += tokens_size;
9031
9032         cfg = kzalloc(size, GFP_KERNEL);
9033         if (!cfg)
9034                 return -ENOMEM;
9035         cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
9036         cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
9037         memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
9038                ETH_ALEN);
9039         if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
9040                 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
9041         else
9042                 port = 0;
9043 #ifdef CONFIG_INET
9044         /* allocate a socket and port for it and use it */
9045         err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
9046                             IPPROTO_TCP, &cfg->sock, 1);
9047         if (err) {
9048                 kfree(cfg);
9049                 return err;
9050         }
9051         if (inet_csk_get_port(cfg->sock->sk, port)) {
9052                 sock_release(cfg->sock);
9053                 kfree(cfg);
9054                 return -EADDRINUSE;
9055         }
9056         cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
9057 #else
9058         if (!port) {
9059                 kfree(cfg);
9060                 return -EINVAL;
9061         }
9062         cfg->src_port = port;
9063 #endif
9064
9065         cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
9066         cfg->payload_len = data_size;
9067         cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
9068         memcpy((void *)cfg->payload,
9069                nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
9070                data_size);
9071         if (seq)
9072                 cfg->payload_seq = *seq;
9073         cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
9074         cfg->wake_len = wake_size;
9075         cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
9076         memcpy((void *)cfg->wake_data,
9077                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
9078                wake_size);
9079         cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
9080                          data_size + wake_size;
9081         memcpy((void *)cfg->wake_mask,
9082                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
9083                wake_mask_size);
9084         if (tok) {
9085                 cfg->tokens_size = tokens_size;
9086                 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
9087         }
9088
9089         trig->tcp = cfg;
9090
9091         return 0;
9092 }
9093
9094 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
9095                                    const struct wiphy_wowlan_support *wowlan,
9096                                    struct nlattr *attr,
9097                                    struct cfg80211_wowlan *trig)
9098 {
9099         struct nlattr **tb;
9100         int err;
9101
9102         tb = kzalloc(NUM_NL80211_ATTR * sizeof(*tb), GFP_KERNEL);
9103         if (!tb)
9104                 return -ENOMEM;
9105
9106         if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
9107                 err = -EOPNOTSUPP;
9108                 goto out;
9109         }
9110
9111         err = nla_parse(tb, NL80211_ATTR_MAX,
9112                         nla_data(attr), nla_len(attr),
9113                         nl80211_policy);
9114         if (err)
9115                 goto out;
9116
9117         trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb);
9118         err = PTR_ERR_OR_ZERO(trig->nd_config);
9119         if (err)
9120                 trig->nd_config = NULL;
9121
9122 out:
9123         kfree(tb);
9124         return err;
9125 }
9126
9127 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
9128 {
9129         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9130         struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
9131         struct cfg80211_wowlan new_triggers = {};
9132         struct cfg80211_wowlan *ntrig;
9133         const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
9134         int err, i;
9135         bool prev_enabled = rdev->wiphy.wowlan_config;
9136         bool regular = false;
9137
9138         if (!wowlan)
9139                 return -EOPNOTSUPP;
9140
9141         if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
9142                 cfg80211_rdev_free_wowlan(rdev);
9143                 rdev->wiphy.wowlan_config = NULL;
9144                 goto set_wakeup;
9145         }
9146
9147         err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
9148                         nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
9149                         nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
9150                         nl80211_wowlan_policy);
9151         if (err)
9152                 return err;
9153
9154         if (tb[NL80211_WOWLAN_TRIG_ANY]) {
9155                 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
9156                         return -EINVAL;
9157                 new_triggers.any = true;
9158         }
9159
9160         if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
9161                 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
9162                         return -EINVAL;
9163                 new_triggers.disconnect = true;
9164                 regular = true;
9165         }
9166
9167         if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
9168                 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
9169                         return -EINVAL;
9170                 new_triggers.magic_pkt = true;
9171                 regular = true;
9172         }
9173
9174         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
9175                 return -EINVAL;
9176
9177         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
9178                 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
9179                         return -EINVAL;
9180                 new_triggers.gtk_rekey_failure = true;
9181                 regular = true;
9182         }
9183
9184         if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
9185                 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
9186                         return -EINVAL;
9187                 new_triggers.eap_identity_req = true;
9188                 regular = true;
9189         }
9190
9191         if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
9192                 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
9193                         return -EINVAL;
9194                 new_triggers.four_way_handshake = true;
9195                 regular = true;
9196         }
9197
9198         if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
9199                 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
9200                         return -EINVAL;
9201                 new_triggers.rfkill_release = true;
9202                 regular = true;
9203         }
9204
9205         if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
9206                 struct nlattr *pat;
9207                 int n_patterns = 0;
9208                 int rem, pat_len, mask_len, pkt_offset;
9209                 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
9210
9211                 regular = true;
9212
9213                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
9214                                     rem)
9215                         n_patterns++;
9216                 if (n_patterns > wowlan->n_patterns)
9217                         return -EINVAL;
9218
9219                 new_triggers.patterns = kcalloc(n_patterns,
9220                                                 sizeof(new_triggers.patterns[0]),
9221                                                 GFP_KERNEL);
9222                 if (!new_triggers.patterns)
9223                         return -ENOMEM;
9224
9225                 new_triggers.n_patterns = n_patterns;
9226                 i = 0;
9227
9228                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
9229                                     rem) {
9230                         u8 *mask_pat;
9231
9232                         nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
9233                                   nla_len(pat), NULL);
9234                         err = -EINVAL;
9235                         if (!pat_tb[NL80211_PKTPAT_MASK] ||
9236                             !pat_tb[NL80211_PKTPAT_PATTERN])
9237                                 goto error;
9238                         pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
9239                         mask_len = DIV_ROUND_UP(pat_len, 8);
9240                         if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
9241                                 goto error;
9242                         if (pat_len > wowlan->pattern_max_len ||
9243                             pat_len < wowlan->pattern_min_len)
9244                                 goto error;
9245
9246                         if (!pat_tb[NL80211_PKTPAT_OFFSET])
9247                                 pkt_offset = 0;
9248                         else
9249                                 pkt_offset = nla_get_u32(
9250                                         pat_tb[NL80211_PKTPAT_OFFSET]);
9251                         if (pkt_offset > wowlan->max_pkt_offset)
9252                                 goto error;
9253                         new_triggers.patterns[i].pkt_offset = pkt_offset;
9254
9255                         mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
9256                         if (!mask_pat) {
9257                                 err = -ENOMEM;
9258                                 goto error;
9259                         }
9260                         new_triggers.patterns[i].mask = mask_pat;
9261                         memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
9262                                mask_len);
9263                         mask_pat += mask_len;
9264                         new_triggers.patterns[i].pattern = mask_pat;
9265                         new_triggers.patterns[i].pattern_len = pat_len;
9266                         memcpy(mask_pat,
9267                                nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
9268                                pat_len);
9269                         i++;
9270                 }
9271         }
9272
9273         if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
9274                 regular = true;
9275                 err = nl80211_parse_wowlan_tcp(
9276                         rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
9277                         &new_triggers);
9278                 if (err)
9279                         goto error;
9280         }
9281
9282         if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
9283                 regular = true;
9284                 err = nl80211_parse_wowlan_nd(
9285                         rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
9286                         &new_triggers);
9287                 if (err)
9288                         goto error;
9289         }
9290
9291         /* The 'any' trigger means the device continues operating more or less
9292          * as in its normal operation mode and wakes up the host on most of the
9293          * normal interrupts (like packet RX, ...)
9294          * It therefore makes little sense to combine with the more constrained
9295          * wakeup trigger modes.
9296          */
9297         if (new_triggers.any && regular) {
9298                 err = -EINVAL;
9299                 goto error;
9300         }
9301
9302         ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
9303         if (!ntrig) {
9304                 err = -ENOMEM;
9305                 goto error;
9306         }
9307         cfg80211_rdev_free_wowlan(rdev);
9308         rdev->wiphy.wowlan_config = ntrig;
9309
9310  set_wakeup:
9311         if (rdev->ops->set_wakeup &&
9312             prev_enabled != !!rdev->wiphy.wowlan_config)
9313                 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
9314
9315         return 0;
9316  error:
9317         for (i = 0; i < new_triggers.n_patterns; i++)
9318                 kfree(new_triggers.patterns[i].mask);
9319         kfree(new_triggers.patterns);
9320         if (new_triggers.tcp && new_triggers.tcp->sock)
9321                 sock_release(new_triggers.tcp->sock);
9322         kfree(new_triggers.tcp);
9323         return err;
9324 }
9325 #endif
9326
9327 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
9328                                        struct cfg80211_registered_device *rdev)
9329 {
9330         struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
9331         int i, j, pat_len;
9332         struct cfg80211_coalesce_rules *rule;
9333
9334         if (!rdev->coalesce->n_rules)
9335                 return 0;
9336
9337         nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE);
9338         if (!nl_rules)
9339                 return -ENOBUFS;
9340
9341         for (i = 0; i < rdev->coalesce->n_rules; i++) {
9342                 nl_rule = nla_nest_start(msg, i + 1);
9343                 if (!nl_rule)
9344                         return -ENOBUFS;
9345
9346                 rule = &rdev->coalesce->rules[i];
9347                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
9348                                 rule->delay))
9349                         return -ENOBUFS;
9350
9351                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
9352                                 rule->condition))
9353                         return -ENOBUFS;
9354
9355                 nl_pats = nla_nest_start(msg,
9356                                 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
9357                 if (!nl_pats)
9358                         return -ENOBUFS;
9359
9360                 for (j = 0; j < rule->n_patterns; j++) {
9361                         nl_pat = nla_nest_start(msg, j + 1);
9362                         if (!nl_pat)
9363                                 return -ENOBUFS;
9364                         pat_len = rule->patterns[j].pattern_len;
9365                         if (nla_put(msg, NL80211_PKTPAT_MASK,
9366                                     DIV_ROUND_UP(pat_len, 8),
9367                                     rule->patterns[j].mask) ||
9368                             nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
9369                                     rule->patterns[j].pattern) ||
9370                             nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
9371                                         rule->patterns[j].pkt_offset))
9372                                 return -ENOBUFS;
9373                         nla_nest_end(msg, nl_pat);
9374                 }
9375                 nla_nest_end(msg, nl_pats);
9376                 nla_nest_end(msg, nl_rule);
9377         }
9378         nla_nest_end(msg, nl_rules);
9379
9380         return 0;
9381 }
9382
9383 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
9384 {
9385         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9386         struct sk_buff *msg;
9387         void *hdr;
9388
9389         if (!rdev->wiphy.coalesce)
9390                 return -EOPNOTSUPP;
9391
9392         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9393         if (!msg)
9394                 return -ENOMEM;
9395
9396         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9397                              NL80211_CMD_GET_COALESCE);
9398         if (!hdr)
9399                 goto nla_put_failure;
9400
9401         if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
9402                 goto nla_put_failure;
9403
9404         genlmsg_end(msg, hdr);
9405         return genlmsg_reply(msg, info);
9406
9407 nla_put_failure:
9408         nlmsg_free(msg);
9409         return -ENOBUFS;
9410 }
9411
9412 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
9413 {
9414         struct cfg80211_coalesce *coalesce = rdev->coalesce;
9415         int i, j;
9416         struct cfg80211_coalesce_rules *rule;
9417
9418         if (!coalesce)
9419                 return;
9420
9421         for (i = 0; i < coalesce->n_rules; i++) {
9422                 rule = &coalesce->rules[i];
9423                 for (j = 0; j < rule->n_patterns; j++)
9424                         kfree(rule->patterns[j].mask);
9425                 kfree(rule->patterns);
9426         }
9427         kfree(coalesce->rules);
9428         kfree(coalesce);
9429         rdev->coalesce = NULL;
9430 }
9431
9432 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
9433                                        struct nlattr *rule,
9434                                        struct cfg80211_coalesce_rules *new_rule)
9435 {
9436         int err, i;
9437         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
9438         struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
9439         int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
9440         struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
9441
9442         err = nla_parse(tb, NL80211_ATTR_COALESCE_RULE_MAX, nla_data(rule),
9443                         nla_len(rule), nl80211_coalesce_policy);
9444         if (err)
9445                 return err;
9446
9447         if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
9448                 new_rule->delay =
9449                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
9450         if (new_rule->delay > coalesce->max_delay)
9451                 return -EINVAL;
9452
9453         if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
9454                 new_rule->condition =
9455                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
9456         if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH &&
9457             new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH)
9458                 return -EINVAL;
9459
9460         if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
9461                 return -EINVAL;
9462
9463         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
9464                             rem)
9465                 n_patterns++;
9466         if (n_patterns > coalesce->n_patterns)
9467                 return -EINVAL;
9468
9469         new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
9470                                      GFP_KERNEL);
9471         if (!new_rule->patterns)
9472                 return -ENOMEM;
9473
9474         new_rule->n_patterns = n_patterns;
9475         i = 0;
9476
9477         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
9478                             rem) {
9479                 u8 *mask_pat;
9480
9481                 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
9482                           nla_len(pat), NULL);
9483                 if (!pat_tb[NL80211_PKTPAT_MASK] ||
9484                     !pat_tb[NL80211_PKTPAT_PATTERN])
9485                         return -EINVAL;
9486                 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
9487                 mask_len = DIV_ROUND_UP(pat_len, 8);
9488                 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
9489                         return -EINVAL;
9490                 if (pat_len > coalesce->pattern_max_len ||
9491                     pat_len < coalesce->pattern_min_len)
9492                         return -EINVAL;
9493
9494                 if (!pat_tb[NL80211_PKTPAT_OFFSET])
9495                         pkt_offset = 0;
9496                 else
9497                         pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
9498                 if (pkt_offset > coalesce->max_pkt_offset)
9499                         return -EINVAL;
9500                 new_rule->patterns[i].pkt_offset = pkt_offset;
9501
9502                 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
9503                 if (!mask_pat)
9504                         return -ENOMEM;
9505
9506                 new_rule->patterns[i].mask = mask_pat;
9507                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
9508                        mask_len);
9509
9510                 mask_pat += mask_len;
9511                 new_rule->patterns[i].pattern = mask_pat;
9512                 new_rule->patterns[i].pattern_len = pat_len;
9513                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
9514                        pat_len);
9515                 i++;
9516         }
9517
9518         return 0;
9519 }
9520
9521 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
9522 {
9523         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9524         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
9525         struct cfg80211_coalesce new_coalesce = {};
9526         struct cfg80211_coalesce *n_coalesce;
9527         int err, rem_rule, n_rules = 0, i, j;
9528         struct nlattr *rule;
9529         struct cfg80211_coalesce_rules *tmp_rule;
9530
9531         if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
9532                 return -EOPNOTSUPP;
9533
9534         if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
9535                 cfg80211_rdev_free_coalesce(rdev);
9536                 rdev->ops->set_coalesce(&rdev->wiphy, NULL);
9537                 return 0;
9538         }
9539
9540         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
9541                             rem_rule)
9542                 n_rules++;
9543         if (n_rules > coalesce->n_rules)
9544                 return -EINVAL;
9545
9546         new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
9547                                      GFP_KERNEL);
9548         if (!new_coalesce.rules)
9549                 return -ENOMEM;
9550
9551         new_coalesce.n_rules = n_rules;
9552         i = 0;
9553
9554         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
9555                             rem_rule) {
9556                 err = nl80211_parse_coalesce_rule(rdev, rule,
9557                                                   &new_coalesce.rules[i]);
9558                 if (err)
9559                         goto error;
9560
9561                 i++;
9562         }
9563
9564         err = rdev->ops->set_coalesce(&rdev->wiphy, &new_coalesce);
9565         if (err)
9566                 goto error;
9567
9568         n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
9569         if (!n_coalesce) {
9570                 err = -ENOMEM;
9571                 goto error;
9572         }
9573         cfg80211_rdev_free_coalesce(rdev);
9574         rdev->coalesce = n_coalesce;
9575
9576         return 0;
9577 error:
9578         for (i = 0; i < new_coalesce.n_rules; i++) {
9579                 tmp_rule = &new_coalesce.rules[i];
9580                 for (j = 0; j < tmp_rule->n_patterns; j++)
9581                         kfree(tmp_rule->patterns[j].mask);
9582                 kfree(tmp_rule->patterns);
9583         }
9584         kfree(new_coalesce.rules);
9585
9586         return err;
9587 }
9588
9589 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
9590 {
9591         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9592         struct net_device *dev = info->user_ptr[1];
9593         struct wireless_dev *wdev = dev->ieee80211_ptr;
9594         struct nlattr *tb[NUM_NL80211_REKEY_DATA];
9595         struct cfg80211_gtk_rekey_data rekey_data;
9596         int err;
9597
9598         if (!info->attrs[NL80211_ATTR_REKEY_DATA])
9599                 return -EINVAL;
9600
9601         err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
9602                         nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
9603                         nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
9604                         nl80211_rekey_policy);
9605         if (err)
9606                 return err;
9607
9608         if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
9609                 return -ERANGE;
9610         if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
9611                 return -ERANGE;
9612         if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
9613                 return -ERANGE;
9614
9615         rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
9616         rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
9617         rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
9618
9619         wdev_lock(wdev);
9620         if (!wdev->current_bss) {
9621                 err = -ENOTCONN;
9622                 goto out;
9623         }
9624
9625         if (!rdev->ops->set_rekey_data) {
9626                 err = -EOPNOTSUPP;
9627                 goto out;
9628         }
9629
9630         err = rdev_set_rekey_data(rdev, dev, &rekey_data);
9631  out:
9632         wdev_unlock(wdev);
9633         return err;
9634 }
9635
9636 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
9637                                              struct genl_info *info)
9638 {
9639         struct net_device *dev = info->user_ptr[1];
9640         struct wireless_dev *wdev = dev->ieee80211_ptr;
9641
9642         if (wdev->iftype != NL80211_IFTYPE_AP &&
9643             wdev->iftype != NL80211_IFTYPE_P2P_GO)
9644                 return -EINVAL;
9645
9646         if (wdev->ap_unexpected_nlportid)
9647                 return -EBUSY;
9648
9649         wdev->ap_unexpected_nlportid = info->snd_portid;
9650         return 0;
9651 }
9652
9653 static int nl80211_probe_client(struct sk_buff *skb,
9654                                 struct genl_info *info)
9655 {
9656         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9657         struct net_device *dev = info->user_ptr[1];
9658         struct wireless_dev *wdev = dev->ieee80211_ptr;
9659         struct sk_buff *msg;
9660         void *hdr;
9661         const u8 *addr;
9662         u64 cookie;
9663         int err;
9664
9665         if (wdev->iftype != NL80211_IFTYPE_AP &&
9666             wdev->iftype != NL80211_IFTYPE_P2P_GO)
9667                 return -EOPNOTSUPP;
9668
9669         if (!info->attrs[NL80211_ATTR_MAC])
9670                 return -EINVAL;
9671
9672         if (!rdev->ops->probe_client)
9673                 return -EOPNOTSUPP;
9674
9675         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9676         if (!msg)
9677                 return -ENOMEM;
9678
9679         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9680                              NL80211_CMD_PROBE_CLIENT);
9681         if (!hdr) {
9682                 err = -ENOBUFS;
9683                 goto free_msg;
9684         }
9685
9686         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
9687
9688         err = rdev_probe_client(rdev, dev, addr, &cookie);
9689         if (err)
9690                 goto free_msg;
9691
9692         if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
9693                 goto nla_put_failure;
9694
9695         genlmsg_end(msg, hdr);
9696
9697         return genlmsg_reply(msg, info);
9698
9699  nla_put_failure:
9700         err = -ENOBUFS;
9701  free_msg:
9702         nlmsg_free(msg);
9703         return err;
9704 }
9705
9706 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
9707 {
9708         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9709         struct cfg80211_beacon_registration *reg, *nreg;
9710         int rv;
9711
9712         if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
9713                 return -EOPNOTSUPP;
9714
9715         nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
9716         if (!nreg)
9717                 return -ENOMEM;
9718
9719         /* First, check if already registered. */
9720         spin_lock_bh(&rdev->beacon_registrations_lock);
9721         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
9722                 if (reg->nlportid == info->snd_portid) {
9723                         rv = -EALREADY;
9724                         goto out_err;
9725                 }
9726         }
9727         /* Add it to the list */
9728         nreg->nlportid = info->snd_portid;
9729         list_add(&nreg->list, &rdev->beacon_registrations);
9730
9731         spin_unlock_bh(&rdev->beacon_registrations_lock);
9732
9733         return 0;
9734 out_err:
9735         spin_unlock_bh(&rdev->beacon_registrations_lock);
9736         kfree(nreg);
9737         return rv;
9738 }
9739
9740 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
9741 {
9742         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9743         struct wireless_dev *wdev = info->user_ptr[1];
9744         int err;
9745
9746         if (!rdev->ops->start_p2p_device)
9747                 return -EOPNOTSUPP;
9748
9749         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
9750                 return -EOPNOTSUPP;
9751
9752         if (wdev->p2p_started)
9753                 return 0;
9754
9755         if (rfkill_blocked(rdev->rfkill))
9756                 return -ERFKILL;
9757
9758         err = rdev_start_p2p_device(rdev, wdev);
9759         if (err)
9760                 return err;
9761
9762         wdev->p2p_started = true;
9763         rdev->opencount++;
9764
9765         return 0;
9766 }
9767
9768 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
9769 {
9770         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9771         struct wireless_dev *wdev = info->user_ptr[1];
9772
9773         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
9774                 return -EOPNOTSUPP;
9775
9776         if (!rdev->ops->stop_p2p_device)
9777                 return -EOPNOTSUPP;
9778
9779         cfg80211_stop_p2p_device(rdev, wdev);
9780
9781         return 0;
9782 }
9783
9784 static int nl80211_get_protocol_features(struct sk_buff *skb,
9785                                          struct genl_info *info)
9786 {
9787         void *hdr;
9788         struct sk_buff *msg;
9789
9790         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9791         if (!msg)
9792                 return -ENOMEM;
9793
9794         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9795                              NL80211_CMD_GET_PROTOCOL_FEATURES);
9796         if (!hdr)
9797                 goto nla_put_failure;
9798
9799         if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
9800                         NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
9801                 goto nla_put_failure;
9802
9803         genlmsg_end(msg, hdr);
9804         return genlmsg_reply(msg, info);
9805
9806  nla_put_failure:
9807         kfree_skb(msg);
9808         return -ENOBUFS;
9809 }
9810
9811 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
9812 {
9813         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9814         struct cfg80211_update_ft_ies_params ft_params;
9815         struct net_device *dev = info->user_ptr[1];
9816
9817         if (!rdev->ops->update_ft_ies)
9818                 return -EOPNOTSUPP;
9819
9820         if (!info->attrs[NL80211_ATTR_MDID] ||
9821             !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
9822                 return -EINVAL;
9823
9824         memset(&ft_params, 0, sizeof(ft_params));
9825         ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
9826         ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9827         ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9828
9829         return rdev_update_ft_ies(rdev, dev, &ft_params);
9830 }
9831
9832 static int nl80211_crit_protocol_start(struct sk_buff *skb,
9833                                        struct genl_info *info)
9834 {
9835         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9836         struct wireless_dev *wdev = info->user_ptr[1];
9837         enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
9838         u16 duration;
9839         int ret;
9840
9841         if (!rdev->ops->crit_proto_start)
9842                 return -EOPNOTSUPP;
9843
9844         if (WARN_ON(!rdev->ops->crit_proto_stop))
9845                 return -EINVAL;
9846
9847         if (rdev->crit_proto_nlportid)
9848                 return -EBUSY;
9849
9850         /* determine protocol if provided */
9851         if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
9852                 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
9853
9854         if (proto >= NUM_NL80211_CRIT_PROTO)
9855                 return -EINVAL;
9856
9857         /* timeout must be provided */
9858         if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
9859                 return -EINVAL;
9860
9861         duration =
9862                 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
9863
9864         if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
9865                 return -ERANGE;
9866
9867         ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
9868         if (!ret)
9869                 rdev->crit_proto_nlportid = info->snd_portid;
9870
9871         return ret;
9872 }
9873
9874 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
9875                                       struct genl_info *info)
9876 {
9877         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9878         struct wireless_dev *wdev = info->user_ptr[1];
9879
9880         if (!rdev->ops->crit_proto_stop)
9881                 return -EOPNOTSUPP;
9882
9883         if (rdev->crit_proto_nlportid) {
9884                 rdev->crit_proto_nlportid = 0;
9885                 rdev_crit_proto_stop(rdev, wdev);
9886         }
9887         return 0;
9888 }
9889
9890 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
9891 {
9892         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9893         struct wireless_dev *wdev =
9894                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
9895         int i, err;
9896         u32 vid, subcmd;
9897
9898         if (!rdev->wiphy.vendor_commands)
9899                 return -EOPNOTSUPP;
9900
9901         if (IS_ERR(wdev)) {
9902                 err = PTR_ERR(wdev);
9903                 if (err != -EINVAL)
9904                         return err;
9905                 wdev = NULL;
9906         } else if (wdev->wiphy != &rdev->wiphy) {
9907                 return -EINVAL;
9908         }
9909
9910         if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
9911             !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
9912                 return -EINVAL;
9913
9914         vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
9915         subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
9916         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
9917                 const struct wiphy_vendor_command *vcmd;
9918                 void *data = NULL;
9919                 int len = 0;
9920
9921                 vcmd = &rdev->wiphy.vendor_commands[i];
9922
9923                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
9924                         continue;
9925
9926                 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
9927                                    WIPHY_VENDOR_CMD_NEED_NETDEV)) {
9928                         if (!wdev)
9929                                 return -EINVAL;
9930                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
9931                             !wdev->netdev)
9932                                 return -EINVAL;
9933
9934                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
9935                                 if (wdev->netdev &&
9936                                     !netif_running(wdev->netdev))
9937                                         return -ENETDOWN;
9938                                 if (!wdev->netdev && !wdev->p2p_started)
9939                                         return -ENETDOWN;
9940                         }
9941                 } else {
9942                         wdev = NULL;
9943                 }
9944
9945                 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
9946                         data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
9947                         len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
9948                 }
9949
9950                 rdev->cur_cmd_info = info;
9951                 err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev,
9952                                                           data, len);
9953                 rdev->cur_cmd_info = NULL;
9954                 return err;
9955         }
9956
9957         return -EOPNOTSUPP;
9958 }
9959
9960 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
9961                                            enum nl80211_commands cmd,
9962                                            enum nl80211_attrs attr,
9963                                            int approxlen)
9964 {
9965         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
9966
9967         if (WARN_ON(!rdev->cur_cmd_info))
9968                 return NULL;
9969
9970         return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
9971                                            rdev->cur_cmd_info->snd_portid,
9972                                            rdev->cur_cmd_info->snd_seq,
9973                                            cmd, attr, NULL, GFP_KERNEL);
9974 }
9975 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
9976
9977 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
9978 {
9979         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
9980         void *hdr = ((void **)skb->cb)[1];
9981         struct nlattr *data = ((void **)skb->cb)[2];
9982
9983         /* clear CB data for netlink core to own from now on */
9984         memset(skb->cb, 0, sizeof(skb->cb));
9985
9986         if (WARN_ON(!rdev->cur_cmd_info)) {
9987                 kfree_skb(skb);
9988                 return -EINVAL;
9989         }
9990
9991         nla_nest_end(skb, data);
9992         genlmsg_end(skb, hdr);
9993         return genlmsg_reply(skb, rdev->cur_cmd_info);
9994 }
9995 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
9996
9997
9998 static int nl80211_set_qos_map(struct sk_buff *skb,
9999                                struct genl_info *info)
10000 {
10001         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10002         struct cfg80211_qos_map *qos_map = NULL;
10003         struct net_device *dev = info->user_ptr[1];
10004         u8 *pos, len, num_des, des_len, des;
10005         int ret;
10006
10007         if (!rdev->ops->set_qos_map)
10008                 return -EOPNOTSUPP;
10009
10010         if (info->attrs[NL80211_ATTR_QOS_MAP]) {
10011                 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
10012                 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
10013
10014                 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
10015                     len > IEEE80211_QOS_MAP_LEN_MAX)
10016                         return -EINVAL;
10017
10018                 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
10019                 if (!qos_map)
10020                         return -ENOMEM;
10021
10022                 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
10023                 if (num_des) {
10024                         des_len = num_des *
10025                                 sizeof(struct cfg80211_dscp_exception);
10026                         memcpy(qos_map->dscp_exception, pos, des_len);
10027                         qos_map->num_des = num_des;
10028                         for (des = 0; des < num_des; des++) {
10029                                 if (qos_map->dscp_exception[des].up > 7) {
10030                                         kfree(qos_map);
10031                                         return -EINVAL;
10032                                 }
10033                         }
10034                         pos += des_len;
10035                 }
10036                 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
10037         }
10038
10039         wdev_lock(dev->ieee80211_ptr);
10040         ret = nl80211_key_allowed(dev->ieee80211_ptr);
10041         if (!ret)
10042                 ret = rdev_set_qos_map(rdev, dev, qos_map);
10043         wdev_unlock(dev->ieee80211_ptr);
10044
10045         kfree(qos_map);
10046         return ret;
10047 }
10048
10049 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
10050 {
10051         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10052         struct net_device *dev = info->user_ptr[1];
10053         struct wireless_dev *wdev = dev->ieee80211_ptr;
10054         const u8 *peer;
10055         u8 tsid, up;
10056         u16 admitted_time = 0;
10057         int err;
10058
10059         if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
10060                 return -EOPNOTSUPP;
10061
10062         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
10063             !info->attrs[NL80211_ATTR_USER_PRIO])
10064                 return -EINVAL;
10065
10066         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
10067         if (tsid >= IEEE80211_NUM_TIDS)
10068                 return -EINVAL;
10069
10070         up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
10071         if (up >= IEEE80211_NUM_UPS)
10072                 return -EINVAL;
10073
10074         /* WMM uses TIDs 0-7 even for TSPEC */
10075         if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
10076                 /* TODO: handle 802.11 TSPEC/admission control
10077                  * need more attributes for that (e.g. BA session requirement);
10078                  * change the WMM adminssion test above to allow both then
10079                  */
10080                 return -EINVAL;
10081         }
10082
10083         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10084
10085         if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
10086                 admitted_time =
10087                         nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
10088                 if (!admitted_time)
10089                         return -EINVAL;
10090         }
10091
10092         wdev_lock(wdev);
10093         switch (wdev->iftype) {
10094         case NL80211_IFTYPE_STATION:
10095         case NL80211_IFTYPE_P2P_CLIENT:
10096                 if (wdev->current_bss)
10097                         break;
10098                 err = -ENOTCONN;
10099                 goto out;
10100         default:
10101                 err = -EOPNOTSUPP;
10102                 goto out;
10103         }
10104
10105         err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
10106
10107  out:
10108         wdev_unlock(wdev);
10109         return err;
10110 }
10111
10112 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
10113 {
10114         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10115         struct net_device *dev = info->user_ptr[1];
10116         struct wireless_dev *wdev = dev->ieee80211_ptr;
10117         const u8 *peer;
10118         u8 tsid;
10119         int err;
10120
10121         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
10122                 return -EINVAL;
10123
10124         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
10125         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10126
10127         wdev_lock(wdev);
10128         err = rdev_del_tx_ts(rdev, dev, tsid, peer);
10129         wdev_unlock(wdev);
10130
10131         return err;
10132 }
10133
10134 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
10135                                        struct genl_info *info)
10136 {
10137         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10138         struct net_device *dev = info->user_ptr[1];
10139         struct wireless_dev *wdev = dev->ieee80211_ptr;
10140         struct cfg80211_chan_def chandef = {};
10141         const u8 *addr;
10142         u8 oper_class;
10143         int err;
10144
10145         if (!rdev->ops->tdls_channel_switch ||
10146             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
10147                 return -EOPNOTSUPP;
10148
10149         switch (dev->ieee80211_ptr->iftype) {
10150         case NL80211_IFTYPE_STATION:
10151         case NL80211_IFTYPE_P2P_CLIENT:
10152                 break;
10153         default:
10154                 return -EOPNOTSUPP;
10155         }
10156
10157         if (!info->attrs[NL80211_ATTR_MAC] ||
10158             !info->attrs[NL80211_ATTR_OPER_CLASS])
10159                 return -EINVAL;
10160
10161         err = nl80211_parse_chandef(rdev, info, &chandef);
10162         if (err)
10163                 return err;
10164
10165         /*
10166          * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
10167          * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
10168          * specification is not defined for them.
10169          */
10170         if (chandef.chan->band == IEEE80211_BAND_2GHZ &&
10171             chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
10172             chandef.width != NL80211_CHAN_WIDTH_20)
10173                 return -EINVAL;
10174
10175         /* we will be active on the TDLS link */
10176         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
10177                                            wdev->iftype))
10178                 return -EINVAL;
10179
10180         /* don't allow switching to DFS channels */
10181         if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
10182                 return -EINVAL;
10183
10184         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
10185         oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
10186
10187         wdev_lock(wdev);
10188         err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
10189         wdev_unlock(wdev);
10190
10191         return err;
10192 }
10193
10194 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
10195                                               struct genl_info *info)
10196 {
10197         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10198         struct net_device *dev = info->user_ptr[1];
10199         struct wireless_dev *wdev = dev->ieee80211_ptr;
10200         const u8 *addr;
10201
10202         if (!rdev->ops->tdls_channel_switch ||
10203             !rdev->ops->tdls_cancel_channel_switch ||
10204             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
10205                 return -EOPNOTSUPP;
10206
10207         switch (dev->ieee80211_ptr->iftype) {
10208         case NL80211_IFTYPE_STATION:
10209         case NL80211_IFTYPE_P2P_CLIENT:
10210                 break;
10211         default:
10212                 return -EOPNOTSUPP;
10213         }
10214
10215         if (!info->attrs[NL80211_ATTR_MAC])
10216                 return -EINVAL;
10217
10218         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
10219
10220         wdev_lock(wdev);
10221         rdev_tdls_cancel_channel_switch(rdev, dev, addr);
10222         wdev_unlock(wdev);
10223
10224         return 0;
10225 }
10226
10227 #define NL80211_FLAG_NEED_WIPHY         0x01
10228 #define NL80211_FLAG_NEED_NETDEV        0x02
10229 #define NL80211_FLAG_NEED_RTNL          0x04
10230 #define NL80211_FLAG_CHECK_NETDEV_UP    0x08
10231 #define NL80211_FLAG_NEED_NETDEV_UP     (NL80211_FLAG_NEED_NETDEV |\
10232                                          NL80211_FLAG_CHECK_NETDEV_UP)
10233 #define NL80211_FLAG_NEED_WDEV          0x10
10234 /* If a netdev is associated, it must be UP, P2P must be started */
10235 #define NL80211_FLAG_NEED_WDEV_UP       (NL80211_FLAG_NEED_WDEV |\
10236                                          NL80211_FLAG_CHECK_NETDEV_UP)
10237 #define NL80211_FLAG_CLEAR_SKB          0x20
10238
10239 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
10240                             struct genl_info *info)
10241 {
10242         struct cfg80211_registered_device *rdev;
10243         struct wireless_dev *wdev;
10244         struct net_device *dev;
10245         bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
10246
10247         if (rtnl)
10248                 rtnl_lock();
10249
10250         if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
10251                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
10252                 if (IS_ERR(rdev)) {
10253                         if (rtnl)
10254                                 rtnl_unlock();
10255                         return PTR_ERR(rdev);
10256                 }
10257                 info->user_ptr[0] = rdev;
10258         } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
10259                    ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
10260                 ASSERT_RTNL();
10261
10262                 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
10263                                                   info->attrs);
10264                 if (IS_ERR(wdev)) {
10265                         if (rtnl)
10266                                 rtnl_unlock();
10267                         return PTR_ERR(wdev);
10268                 }
10269
10270                 dev = wdev->netdev;
10271                 rdev = wiphy_to_rdev(wdev->wiphy);
10272
10273                 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
10274                         if (!dev) {
10275                                 if (rtnl)
10276                                         rtnl_unlock();
10277                                 return -EINVAL;
10278                         }
10279
10280                         info->user_ptr[1] = dev;
10281                 } else {
10282                         info->user_ptr[1] = wdev;
10283                 }
10284
10285                 if (dev) {
10286                         if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
10287                             !netif_running(dev)) {
10288                                 if (rtnl)
10289                                         rtnl_unlock();
10290                                 return -ENETDOWN;
10291                         }
10292
10293                         dev_hold(dev);
10294                 } else if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP) {
10295                         if (!wdev->p2p_started) {
10296                                 if (rtnl)
10297                                         rtnl_unlock();
10298                                 return -ENETDOWN;
10299                         }
10300                 }
10301
10302                 info->user_ptr[0] = rdev;
10303         }
10304
10305         return 0;
10306 }
10307
10308 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
10309                               struct genl_info *info)
10310 {
10311         if (info->user_ptr[1]) {
10312                 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
10313                         struct wireless_dev *wdev = info->user_ptr[1];
10314
10315                         if (wdev->netdev)
10316                                 dev_put(wdev->netdev);
10317                 } else {
10318                         dev_put(info->user_ptr[1]);
10319                 }
10320         }
10321
10322         if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
10323                 rtnl_unlock();
10324
10325         /* If needed, clear the netlink message payload from the SKB
10326          * as it might contain key data that shouldn't stick around on
10327          * the heap after the SKB is freed. The netlink message header
10328          * is still needed for further processing, so leave it intact.
10329          */
10330         if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
10331                 struct nlmsghdr *nlh = nlmsg_hdr(skb);
10332
10333                 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
10334         }
10335 }
10336
10337 static const struct genl_ops nl80211_ops[] = {
10338         {
10339                 .cmd = NL80211_CMD_GET_WIPHY,
10340                 .doit = nl80211_get_wiphy,
10341                 .dumpit = nl80211_dump_wiphy,
10342                 .done = nl80211_dump_wiphy_done,
10343                 .policy = nl80211_policy,
10344                 /* can be retrieved by unprivileged users */
10345                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10346                                   NL80211_FLAG_NEED_RTNL,
10347         },
10348         {
10349                 .cmd = NL80211_CMD_SET_WIPHY,
10350                 .doit = nl80211_set_wiphy,
10351                 .policy = nl80211_policy,
10352                 .flags = GENL_ADMIN_PERM,
10353                 .internal_flags = NL80211_FLAG_NEED_RTNL,
10354         },
10355         {
10356                 .cmd = NL80211_CMD_GET_INTERFACE,
10357                 .doit = nl80211_get_interface,
10358                 .dumpit = nl80211_dump_interface,
10359                 .policy = nl80211_policy,
10360                 /* can be retrieved by unprivileged users */
10361                 .internal_flags = NL80211_FLAG_NEED_WDEV |
10362                                   NL80211_FLAG_NEED_RTNL,
10363         },
10364         {
10365                 .cmd = NL80211_CMD_SET_INTERFACE,
10366                 .doit = nl80211_set_interface,
10367                 .policy = nl80211_policy,
10368                 .flags = GENL_ADMIN_PERM,
10369                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10370                                   NL80211_FLAG_NEED_RTNL,
10371         },
10372         {
10373                 .cmd = NL80211_CMD_NEW_INTERFACE,
10374                 .doit = nl80211_new_interface,
10375                 .policy = nl80211_policy,
10376                 .flags = GENL_ADMIN_PERM,
10377                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10378                                   NL80211_FLAG_NEED_RTNL,
10379         },
10380         {
10381                 .cmd = NL80211_CMD_DEL_INTERFACE,
10382                 .doit = nl80211_del_interface,
10383                 .policy = nl80211_policy,
10384                 .flags = GENL_ADMIN_PERM,
10385                 .internal_flags = NL80211_FLAG_NEED_WDEV |
10386                                   NL80211_FLAG_NEED_RTNL,
10387         },
10388         {
10389                 .cmd = NL80211_CMD_GET_KEY,
10390                 .doit = nl80211_get_key,
10391                 .policy = nl80211_policy,
10392                 .flags = GENL_ADMIN_PERM,
10393                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10394                                   NL80211_FLAG_NEED_RTNL,
10395         },
10396         {
10397                 .cmd = NL80211_CMD_SET_KEY,
10398                 .doit = nl80211_set_key,
10399                 .policy = nl80211_policy,
10400                 .flags = GENL_ADMIN_PERM,
10401                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10402                                   NL80211_FLAG_NEED_RTNL |
10403                                   NL80211_FLAG_CLEAR_SKB,
10404         },
10405         {
10406                 .cmd = NL80211_CMD_NEW_KEY,
10407                 .doit = nl80211_new_key,
10408                 .policy = nl80211_policy,
10409                 .flags = GENL_ADMIN_PERM,
10410                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10411                                   NL80211_FLAG_NEED_RTNL |
10412                                   NL80211_FLAG_CLEAR_SKB,
10413         },
10414         {
10415                 .cmd = NL80211_CMD_DEL_KEY,
10416                 .doit = nl80211_del_key,
10417                 .policy = nl80211_policy,
10418                 .flags = GENL_ADMIN_PERM,
10419                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10420                                   NL80211_FLAG_NEED_RTNL,
10421         },
10422         {
10423                 .cmd = NL80211_CMD_SET_BEACON,
10424                 .policy = nl80211_policy,
10425                 .flags = GENL_ADMIN_PERM,
10426                 .doit = nl80211_set_beacon,
10427                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10428                                   NL80211_FLAG_NEED_RTNL,
10429         },
10430         {
10431                 .cmd = NL80211_CMD_START_AP,
10432                 .policy = nl80211_policy,
10433                 .flags = GENL_ADMIN_PERM,
10434                 .doit = nl80211_start_ap,
10435                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10436                                   NL80211_FLAG_NEED_RTNL,
10437         },
10438         {
10439                 .cmd = NL80211_CMD_STOP_AP,
10440                 .policy = nl80211_policy,
10441                 .flags = GENL_ADMIN_PERM,
10442                 .doit = nl80211_stop_ap,
10443                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10444                                   NL80211_FLAG_NEED_RTNL,
10445         },
10446         {
10447                 .cmd = NL80211_CMD_GET_STATION,
10448                 .doit = nl80211_get_station,
10449                 .dumpit = nl80211_dump_station,
10450                 .policy = nl80211_policy,
10451                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10452                                   NL80211_FLAG_NEED_RTNL,
10453         },
10454         {
10455                 .cmd = NL80211_CMD_SET_STATION,
10456                 .doit = nl80211_set_station,
10457                 .policy = nl80211_policy,
10458                 .flags = GENL_ADMIN_PERM,
10459                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10460                                   NL80211_FLAG_NEED_RTNL,
10461         },
10462         {
10463                 .cmd = NL80211_CMD_NEW_STATION,
10464                 .doit = nl80211_new_station,
10465                 .policy = nl80211_policy,
10466                 .flags = GENL_ADMIN_PERM,
10467                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10468                                   NL80211_FLAG_NEED_RTNL,
10469         },
10470         {
10471                 .cmd = NL80211_CMD_DEL_STATION,
10472                 .doit = nl80211_del_station,
10473                 .policy = nl80211_policy,
10474                 .flags = GENL_ADMIN_PERM,
10475                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10476                                   NL80211_FLAG_NEED_RTNL,
10477         },
10478         {
10479                 .cmd = NL80211_CMD_GET_MPATH,
10480                 .doit = nl80211_get_mpath,
10481                 .dumpit = nl80211_dump_mpath,
10482                 .policy = nl80211_policy,
10483                 .flags = GENL_ADMIN_PERM,
10484                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10485                                   NL80211_FLAG_NEED_RTNL,
10486         },
10487         {
10488                 .cmd = NL80211_CMD_GET_MPP,
10489                 .doit = nl80211_get_mpp,
10490                 .dumpit = nl80211_dump_mpp,
10491                 .policy = nl80211_policy,
10492                 .flags = GENL_ADMIN_PERM,
10493                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10494                                   NL80211_FLAG_NEED_RTNL,
10495         },
10496         {
10497                 .cmd = NL80211_CMD_SET_MPATH,
10498                 .doit = nl80211_set_mpath,
10499                 .policy = nl80211_policy,
10500                 .flags = GENL_ADMIN_PERM,
10501                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10502                                   NL80211_FLAG_NEED_RTNL,
10503         },
10504         {
10505                 .cmd = NL80211_CMD_NEW_MPATH,
10506                 .doit = nl80211_new_mpath,
10507                 .policy = nl80211_policy,
10508                 .flags = GENL_ADMIN_PERM,
10509                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10510                                   NL80211_FLAG_NEED_RTNL,
10511         },
10512         {
10513                 .cmd = NL80211_CMD_DEL_MPATH,
10514                 .doit = nl80211_del_mpath,
10515                 .policy = nl80211_policy,
10516                 .flags = GENL_ADMIN_PERM,
10517                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10518                                   NL80211_FLAG_NEED_RTNL,
10519         },
10520         {
10521                 .cmd = NL80211_CMD_SET_BSS,
10522                 .doit = nl80211_set_bss,
10523                 .policy = nl80211_policy,
10524                 .flags = GENL_ADMIN_PERM,
10525                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10526                                   NL80211_FLAG_NEED_RTNL,
10527         },
10528         {
10529                 .cmd = NL80211_CMD_GET_REG,
10530                 .doit = nl80211_get_reg_do,
10531                 .dumpit = nl80211_get_reg_dump,
10532                 .policy = nl80211_policy,
10533                 .internal_flags = NL80211_FLAG_NEED_RTNL,
10534                 /* can be retrieved by unprivileged users */
10535         },
10536         {
10537                 .cmd = NL80211_CMD_SET_REG,
10538                 .doit = nl80211_set_reg,
10539                 .policy = nl80211_policy,
10540                 .flags = GENL_ADMIN_PERM,
10541                 .internal_flags = NL80211_FLAG_NEED_RTNL,
10542         },
10543         {
10544                 .cmd = NL80211_CMD_REQ_SET_REG,
10545                 .doit = nl80211_req_set_reg,
10546                 .policy = nl80211_policy,
10547                 .flags = GENL_ADMIN_PERM,
10548         },
10549         {
10550                 .cmd = NL80211_CMD_GET_MESH_CONFIG,
10551                 .doit = nl80211_get_mesh_config,
10552                 .policy = nl80211_policy,
10553                 /* can be retrieved by unprivileged users */
10554                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10555                                   NL80211_FLAG_NEED_RTNL,
10556         },
10557         {
10558                 .cmd = NL80211_CMD_SET_MESH_CONFIG,
10559                 .doit = nl80211_update_mesh_config,
10560                 .policy = nl80211_policy,
10561                 .flags = GENL_ADMIN_PERM,
10562                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10563                                   NL80211_FLAG_NEED_RTNL,
10564         },
10565         {
10566                 .cmd = NL80211_CMD_TRIGGER_SCAN,
10567                 .doit = nl80211_trigger_scan,
10568                 .policy = nl80211_policy,
10569                 .flags = GENL_ADMIN_PERM,
10570                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10571                                   NL80211_FLAG_NEED_RTNL,
10572         },
10573         {
10574                 .cmd = NL80211_CMD_GET_SCAN,
10575                 .policy = nl80211_policy,
10576                 .dumpit = nl80211_dump_scan,
10577         },
10578         {
10579                 .cmd = NL80211_CMD_START_SCHED_SCAN,
10580                 .doit = nl80211_start_sched_scan,
10581                 .policy = nl80211_policy,
10582                 .flags = GENL_ADMIN_PERM,
10583                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10584                                   NL80211_FLAG_NEED_RTNL,
10585         },
10586         {
10587                 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
10588                 .doit = nl80211_stop_sched_scan,
10589                 .policy = nl80211_policy,
10590                 .flags = GENL_ADMIN_PERM,
10591                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10592                                   NL80211_FLAG_NEED_RTNL,
10593         },
10594         {
10595                 .cmd = NL80211_CMD_AUTHENTICATE,
10596                 .doit = nl80211_authenticate,
10597                 .policy = nl80211_policy,
10598                 .flags = GENL_ADMIN_PERM,
10599                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10600                                   NL80211_FLAG_NEED_RTNL |
10601                                   NL80211_FLAG_CLEAR_SKB,
10602         },
10603         {
10604                 .cmd = NL80211_CMD_ASSOCIATE,
10605                 .doit = nl80211_associate,
10606                 .policy = nl80211_policy,
10607                 .flags = GENL_ADMIN_PERM,
10608                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10609                                   NL80211_FLAG_NEED_RTNL,
10610         },
10611         {
10612                 .cmd = NL80211_CMD_DEAUTHENTICATE,
10613                 .doit = nl80211_deauthenticate,
10614                 .policy = nl80211_policy,
10615                 .flags = GENL_ADMIN_PERM,
10616                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10617                                   NL80211_FLAG_NEED_RTNL,
10618         },
10619         {
10620                 .cmd = NL80211_CMD_DISASSOCIATE,
10621                 .doit = nl80211_disassociate,
10622                 .policy = nl80211_policy,
10623                 .flags = GENL_ADMIN_PERM,
10624                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10625                                   NL80211_FLAG_NEED_RTNL,
10626         },
10627         {
10628                 .cmd = NL80211_CMD_JOIN_IBSS,
10629                 .doit = nl80211_join_ibss,
10630                 .policy = nl80211_policy,
10631                 .flags = GENL_ADMIN_PERM,
10632                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10633                                   NL80211_FLAG_NEED_RTNL,
10634         },
10635         {
10636                 .cmd = NL80211_CMD_LEAVE_IBSS,
10637                 .doit = nl80211_leave_ibss,
10638                 .policy = nl80211_policy,
10639                 .flags = GENL_ADMIN_PERM,
10640                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10641                                   NL80211_FLAG_NEED_RTNL,
10642         },
10643 #ifdef CONFIG_NL80211_TESTMODE
10644         {
10645                 .cmd = NL80211_CMD_TESTMODE,
10646                 .doit = nl80211_testmode_do,
10647                 .dumpit = nl80211_testmode_dump,
10648                 .policy = nl80211_policy,
10649                 .flags = GENL_ADMIN_PERM,
10650                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10651                                   NL80211_FLAG_NEED_RTNL,
10652         },
10653 #endif
10654         {
10655                 .cmd = NL80211_CMD_CONNECT,
10656                 .doit = nl80211_connect,
10657                 .policy = nl80211_policy,
10658                 .flags = GENL_ADMIN_PERM,
10659                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10660                                   NL80211_FLAG_NEED_RTNL,
10661         },
10662         {
10663                 .cmd = NL80211_CMD_DISCONNECT,
10664                 .doit = nl80211_disconnect,
10665                 .policy = nl80211_policy,
10666                 .flags = GENL_ADMIN_PERM,
10667                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10668                                   NL80211_FLAG_NEED_RTNL,
10669         },
10670         {
10671                 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
10672                 .doit = nl80211_wiphy_netns,
10673                 .policy = nl80211_policy,
10674                 .flags = GENL_ADMIN_PERM,
10675                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10676                                   NL80211_FLAG_NEED_RTNL,
10677         },
10678         {
10679                 .cmd = NL80211_CMD_GET_SURVEY,
10680                 .policy = nl80211_policy,
10681                 .dumpit = nl80211_dump_survey,
10682         },
10683         {
10684                 .cmd = NL80211_CMD_SET_PMKSA,
10685                 .doit = nl80211_setdel_pmksa,
10686                 .policy = nl80211_policy,
10687                 .flags = GENL_ADMIN_PERM,
10688                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10689                                   NL80211_FLAG_NEED_RTNL,
10690         },
10691         {
10692                 .cmd = NL80211_CMD_DEL_PMKSA,
10693                 .doit = nl80211_setdel_pmksa,
10694                 .policy = nl80211_policy,
10695                 .flags = GENL_ADMIN_PERM,
10696                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10697                                   NL80211_FLAG_NEED_RTNL,
10698         },
10699         {
10700                 .cmd = NL80211_CMD_FLUSH_PMKSA,
10701                 .doit = nl80211_flush_pmksa,
10702                 .policy = nl80211_policy,
10703                 .flags = GENL_ADMIN_PERM,
10704                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10705                                   NL80211_FLAG_NEED_RTNL,
10706         },
10707         {
10708                 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
10709                 .doit = nl80211_remain_on_channel,
10710                 .policy = nl80211_policy,
10711                 .flags = GENL_ADMIN_PERM,
10712                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10713                                   NL80211_FLAG_NEED_RTNL,
10714         },
10715         {
10716                 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
10717                 .doit = nl80211_cancel_remain_on_channel,
10718                 .policy = nl80211_policy,
10719                 .flags = GENL_ADMIN_PERM,
10720                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10721                                   NL80211_FLAG_NEED_RTNL,
10722         },
10723         {
10724                 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
10725                 .doit = nl80211_set_tx_bitrate_mask,
10726                 .policy = nl80211_policy,
10727                 .flags = GENL_ADMIN_PERM,
10728                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10729                                   NL80211_FLAG_NEED_RTNL,
10730         },
10731         {
10732                 .cmd = NL80211_CMD_REGISTER_FRAME,
10733                 .doit = nl80211_register_mgmt,
10734                 .policy = nl80211_policy,
10735                 .flags = GENL_ADMIN_PERM,
10736                 .internal_flags = NL80211_FLAG_NEED_WDEV |
10737                                   NL80211_FLAG_NEED_RTNL,
10738         },
10739         {
10740                 .cmd = NL80211_CMD_FRAME,
10741                 .doit = nl80211_tx_mgmt,
10742                 .policy = nl80211_policy,
10743                 .flags = GENL_ADMIN_PERM,
10744                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10745                                   NL80211_FLAG_NEED_RTNL,
10746         },
10747         {
10748                 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
10749                 .doit = nl80211_tx_mgmt_cancel_wait,
10750                 .policy = nl80211_policy,
10751                 .flags = GENL_ADMIN_PERM,
10752                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10753                                   NL80211_FLAG_NEED_RTNL,
10754         },
10755         {
10756                 .cmd = NL80211_CMD_SET_POWER_SAVE,
10757                 .doit = nl80211_set_power_save,
10758                 .policy = nl80211_policy,
10759                 .flags = GENL_ADMIN_PERM,
10760                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10761                                   NL80211_FLAG_NEED_RTNL,
10762         },
10763         {
10764                 .cmd = NL80211_CMD_GET_POWER_SAVE,
10765                 .doit = nl80211_get_power_save,
10766                 .policy = nl80211_policy,
10767                 /* can be retrieved by unprivileged users */
10768                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10769                                   NL80211_FLAG_NEED_RTNL,
10770         },
10771         {
10772                 .cmd = NL80211_CMD_SET_CQM,
10773                 .doit = nl80211_set_cqm,
10774                 .policy = nl80211_policy,
10775                 .flags = GENL_ADMIN_PERM,
10776                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10777                                   NL80211_FLAG_NEED_RTNL,
10778         },
10779         {
10780                 .cmd = NL80211_CMD_SET_CHANNEL,
10781                 .doit = nl80211_set_channel,
10782                 .policy = nl80211_policy,
10783                 .flags = GENL_ADMIN_PERM,
10784                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10785                                   NL80211_FLAG_NEED_RTNL,
10786         },
10787         {
10788                 .cmd = NL80211_CMD_SET_WDS_PEER,
10789                 .doit = nl80211_set_wds_peer,
10790                 .policy = nl80211_policy,
10791                 .flags = GENL_ADMIN_PERM,
10792                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10793                                   NL80211_FLAG_NEED_RTNL,
10794         },
10795         {
10796                 .cmd = NL80211_CMD_JOIN_MESH,
10797                 .doit = nl80211_join_mesh,
10798                 .policy = nl80211_policy,
10799                 .flags = GENL_ADMIN_PERM,
10800                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10801                                   NL80211_FLAG_NEED_RTNL,
10802         },
10803         {
10804                 .cmd = NL80211_CMD_LEAVE_MESH,
10805                 .doit = nl80211_leave_mesh,
10806                 .policy = nl80211_policy,
10807                 .flags = GENL_ADMIN_PERM,
10808                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10809                                   NL80211_FLAG_NEED_RTNL,
10810         },
10811         {
10812                 .cmd = NL80211_CMD_JOIN_OCB,
10813                 .doit = nl80211_join_ocb,
10814                 .policy = nl80211_policy,
10815                 .flags = GENL_ADMIN_PERM,
10816                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10817                                   NL80211_FLAG_NEED_RTNL,
10818         },
10819         {
10820                 .cmd = NL80211_CMD_LEAVE_OCB,
10821                 .doit = nl80211_leave_ocb,
10822                 .policy = nl80211_policy,
10823                 .flags = GENL_ADMIN_PERM,
10824                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10825                                   NL80211_FLAG_NEED_RTNL,
10826         },
10827 #ifdef CONFIG_PM
10828         {
10829                 .cmd = NL80211_CMD_GET_WOWLAN,
10830                 .doit = nl80211_get_wowlan,
10831                 .policy = nl80211_policy,
10832                 /* can be retrieved by unprivileged users */
10833                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10834                                   NL80211_FLAG_NEED_RTNL,
10835         },
10836         {
10837                 .cmd = NL80211_CMD_SET_WOWLAN,
10838                 .doit = nl80211_set_wowlan,
10839                 .policy = nl80211_policy,
10840                 .flags = GENL_ADMIN_PERM,
10841                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10842                                   NL80211_FLAG_NEED_RTNL,
10843         },
10844 #endif
10845         {
10846                 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
10847                 .doit = nl80211_set_rekey_data,
10848                 .policy = nl80211_policy,
10849                 .flags = GENL_ADMIN_PERM,
10850                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10851                                   NL80211_FLAG_NEED_RTNL |
10852                                   NL80211_FLAG_CLEAR_SKB,
10853         },
10854         {
10855                 .cmd = NL80211_CMD_TDLS_MGMT,
10856                 .doit = nl80211_tdls_mgmt,
10857                 .policy = nl80211_policy,
10858                 .flags = GENL_ADMIN_PERM,
10859                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10860                                   NL80211_FLAG_NEED_RTNL,
10861         },
10862         {
10863                 .cmd = NL80211_CMD_TDLS_OPER,
10864                 .doit = nl80211_tdls_oper,
10865                 .policy = nl80211_policy,
10866                 .flags = GENL_ADMIN_PERM,
10867                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10868                                   NL80211_FLAG_NEED_RTNL,
10869         },
10870         {
10871                 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
10872                 .doit = nl80211_register_unexpected_frame,
10873                 .policy = nl80211_policy,
10874                 .flags = GENL_ADMIN_PERM,
10875                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10876                                   NL80211_FLAG_NEED_RTNL,
10877         },
10878         {
10879                 .cmd = NL80211_CMD_PROBE_CLIENT,
10880                 .doit = nl80211_probe_client,
10881                 .policy = nl80211_policy,
10882                 .flags = GENL_ADMIN_PERM,
10883                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10884                                   NL80211_FLAG_NEED_RTNL,
10885         },
10886         {
10887                 .cmd = NL80211_CMD_REGISTER_BEACONS,
10888                 .doit = nl80211_register_beacons,
10889                 .policy = nl80211_policy,
10890                 .flags = GENL_ADMIN_PERM,
10891                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10892                                   NL80211_FLAG_NEED_RTNL,
10893         },
10894         {
10895                 .cmd = NL80211_CMD_SET_NOACK_MAP,
10896                 .doit = nl80211_set_noack_map,
10897                 .policy = nl80211_policy,
10898                 .flags = GENL_ADMIN_PERM,
10899                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10900                                   NL80211_FLAG_NEED_RTNL,
10901         },
10902         {
10903                 .cmd = NL80211_CMD_START_P2P_DEVICE,
10904                 .doit = nl80211_start_p2p_device,
10905                 .policy = nl80211_policy,
10906                 .flags = GENL_ADMIN_PERM,
10907                 .internal_flags = NL80211_FLAG_NEED_WDEV |
10908                                   NL80211_FLAG_NEED_RTNL,
10909         },
10910         {
10911                 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
10912                 .doit = nl80211_stop_p2p_device,
10913                 .policy = nl80211_policy,
10914                 .flags = GENL_ADMIN_PERM,
10915                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10916                                   NL80211_FLAG_NEED_RTNL,
10917         },
10918         {
10919                 .cmd = NL80211_CMD_SET_MCAST_RATE,
10920                 .doit = nl80211_set_mcast_rate,
10921                 .policy = nl80211_policy,
10922                 .flags = GENL_ADMIN_PERM,
10923                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10924                                   NL80211_FLAG_NEED_RTNL,
10925         },
10926         {
10927                 .cmd = NL80211_CMD_SET_MAC_ACL,
10928                 .doit = nl80211_set_mac_acl,
10929                 .policy = nl80211_policy,
10930                 .flags = GENL_ADMIN_PERM,
10931                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10932                                   NL80211_FLAG_NEED_RTNL,
10933         },
10934         {
10935                 .cmd = NL80211_CMD_RADAR_DETECT,
10936                 .doit = nl80211_start_radar_detection,
10937                 .policy = nl80211_policy,
10938                 .flags = GENL_ADMIN_PERM,
10939                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10940                                   NL80211_FLAG_NEED_RTNL,
10941         },
10942         {
10943                 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
10944                 .doit = nl80211_get_protocol_features,
10945                 .policy = nl80211_policy,
10946         },
10947         {
10948                 .cmd = NL80211_CMD_UPDATE_FT_IES,
10949                 .doit = nl80211_update_ft_ies,
10950                 .policy = nl80211_policy,
10951                 .flags = GENL_ADMIN_PERM,
10952                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10953                                   NL80211_FLAG_NEED_RTNL,
10954         },
10955         {
10956                 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
10957                 .doit = nl80211_crit_protocol_start,
10958                 .policy = nl80211_policy,
10959                 .flags = GENL_ADMIN_PERM,
10960                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10961                                   NL80211_FLAG_NEED_RTNL,
10962         },
10963         {
10964                 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
10965                 .doit = nl80211_crit_protocol_stop,
10966                 .policy = nl80211_policy,
10967                 .flags = GENL_ADMIN_PERM,
10968                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10969                                   NL80211_FLAG_NEED_RTNL,
10970         },
10971         {
10972                 .cmd = NL80211_CMD_GET_COALESCE,
10973                 .doit = nl80211_get_coalesce,
10974                 .policy = nl80211_policy,
10975                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10976                                   NL80211_FLAG_NEED_RTNL,
10977         },
10978         {
10979                 .cmd = NL80211_CMD_SET_COALESCE,
10980                 .doit = nl80211_set_coalesce,
10981                 .policy = nl80211_policy,
10982                 .flags = GENL_ADMIN_PERM,
10983                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10984                                   NL80211_FLAG_NEED_RTNL,
10985         },
10986         {
10987                 .cmd = NL80211_CMD_CHANNEL_SWITCH,
10988                 .doit = nl80211_channel_switch,
10989                 .policy = nl80211_policy,
10990                 .flags = GENL_ADMIN_PERM,
10991                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10992                                   NL80211_FLAG_NEED_RTNL,
10993         },
10994         {
10995                 .cmd = NL80211_CMD_VENDOR,
10996                 .doit = nl80211_vendor_cmd,
10997                 .policy = nl80211_policy,
10998                 .flags = GENL_ADMIN_PERM,
10999                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11000                                   NL80211_FLAG_NEED_RTNL,
11001         },
11002         {
11003                 .cmd = NL80211_CMD_SET_QOS_MAP,
11004                 .doit = nl80211_set_qos_map,
11005                 .policy = nl80211_policy,
11006                 .flags = GENL_ADMIN_PERM,
11007                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11008                                   NL80211_FLAG_NEED_RTNL,
11009         },
11010         {
11011                 .cmd = NL80211_CMD_ADD_TX_TS,
11012                 .doit = nl80211_add_tx_ts,
11013                 .policy = nl80211_policy,
11014                 .flags = GENL_ADMIN_PERM,
11015                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11016                                   NL80211_FLAG_NEED_RTNL,
11017         },
11018         {
11019                 .cmd = NL80211_CMD_DEL_TX_TS,
11020                 .doit = nl80211_del_tx_ts,
11021                 .policy = nl80211_policy,
11022                 .flags = GENL_ADMIN_PERM,
11023                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11024                                   NL80211_FLAG_NEED_RTNL,
11025         },
11026         {
11027                 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
11028                 .doit = nl80211_tdls_channel_switch,
11029                 .policy = nl80211_policy,
11030                 .flags = GENL_ADMIN_PERM,
11031                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11032                                   NL80211_FLAG_NEED_RTNL,
11033         },
11034         {
11035                 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
11036                 .doit = nl80211_tdls_cancel_channel_switch,
11037                 .policy = nl80211_policy,
11038                 .flags = GENL_ADMIN_PERM,
11039                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11040                                   NL80211_FLAG_NEED_RTNL,
11041         },
11042 };
11043
11044 /* notification functions */
11045
11046 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
11047                           enum nl80211_commands cmd)
11048 {
11049         struct sk_buff *msg;
11050         struct nl80211_dump_wiphy_state state = {};
11051
11052         WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
11053                 cmd != NL80211_CMD_DEL_WIPHY);
11054
11055         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11056         if (!msg)
11057                 return;
11058
11059         if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
11060                 nlmsg_free(msg);
11061                 return;
11062         }
11063
11064         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11065                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
11066 }
11067
11068 static int nl80211_add_scan_req(struct sk_buff *msg,
11069                                 struct cfg80211_registered_device *rdev)
11070 {
11071         struct cfg80211_scan_request *req = rdev->scan_req;
11072         struct nlattr *nest;
11073         int i;
11074
11075         if (WARN_ON(!req))
11076                 return 0;
11077
11078         nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
11079         if (!nest)
11080                 goto nla_put_failure;
11081         for (i = 0; i < req->n_ssids; i++) {
11082                 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
11083                         goto nla_put_failure;
11084         }
11085         nla_nest_end(msg, nest);
11086
11087         nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
11088         if (!nest)
11089                 goto nla_put_failure;
11090         for (i = 0; i < req->n_channels; i++) {
11091                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
11092                         goto nla_put_failure;
11093         }
11094         nla_nest_end(msg, nest);
11095
11096         if (req->ie &&
11097             nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
11098                 goto nla_put_failure;
11099
11100         if (req->flags &&
11101             nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
11102                 goto nla_put_failure;
11103
11104         return 0;
11105  nla_put_failure:
11106         return -ENOBUFS;
11107 }
11108
11109 static int nl80211_send_scan_msg(struct sk_buff *msg,
11110                                  struct cfg80211_registered_device *rdev,
11111                                  struct wireless_dev *wdev,
11112                                  u32 portid, u32 seq, int flags,
11113                                  u32 cmd)
11114 {
11115         void *hdr;
11116
11117         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
11118         if (!hdr)
11119                 return -1;
11120
11121         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11122             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11123                                          wdev->netdev->ifindex)) ||
11124             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
11125                 goto nla_put_failure;
11126
11127         /* ignore errors and send incomplete event anyway */
11128         nl80211_add_scan_req(msg, rdev);
11129
11130         genlmsg_end(msg, hdr);
11131         return 0;
11132
11133  nla_put_failure:
11134         genlmsg_cancel(msg, hdr);
11135         return -EMSGSIZE;
11136 }
11137
11138 static int
11139 nl80211_send_sched_scan_msg(struct sk_buff *msg,
11140                             struct cfg80211_registered_device *rdev,
11141                             struct net_device *netdev,
11142                             u32 portid, u32 seq, int flags, u32 cmd)
11143 {
11144         void *hdr;
11145
11146         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
11147         if (!hdr)
11148                 return -1;
11149
11150         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11151             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
11152                 goto nla_put_failure;
11153
11154         genlmsg_end(msg, hdr);
11155         return 0;
11156
11157  nla_put_failure:
11158         genlmsg_cancel(msg, hdr);
11159         return -EMSGSIZE;
11160 }
11161
11162 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
11163                              struct wireless_dev *wdev)
11164 {
11165         struct sk_buff *msg;
11166
11167         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11168         if (!msg)
11169                 return;
11170
11171         if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
11172                                   NL80211_CMD_TRIGGER_SCAN) < 0) {
11173                 nlmsg_free(msg);
11174                 return;
11175         }
11176
11177         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11178                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
11179 }
11180
11181 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
11182                                        struct wireless_dev *wdev, bool aborted)
11183 {
11184         struct sk_buff *msg;
11185
11186         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11187         if (!msg)
11188                 return NULL;
11189
11190         if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
11191                                   aborted ? NL80211_CMD_SCAN_ABORTED :
11192                                             NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
11193                 nlmsg_free(msg);
11194                 return NULL;
11195         }
11196
11197         return msg;
11198 }
11199
11200 void nl80211_send_scan_result(struct cfg80211_registered_device *rdev,
11201                               struct sk_buff *msg)
11202 {
11203         if (!msg)
11204                 return;
11205
11206         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11207                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
11208 }
11209
11210 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
11211                                      struct net_device *netdev)
11212 {
11213         struct sk_buff *msg;
11214
11215         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11216         if (!msg)
11217                 return;
11218
11219         if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
11220                                         NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
11221                 nlmsg_free(msg);
11222                 return;
11223         }
11224
11225         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11226                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
11227 }
11228
11229 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
11230                              struct net_device *netdev, u32 cmd)
11231 {
11232         struct sk_buff *msg;
11233
11234         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11235         if (!msg)
11236                 return;
11237
11238         if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
11239                 nlmsg_free(msg);
11240                 return;
11241         }
11242
11243         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11244                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
11245 }
11246
11247 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
11248                                           struct regulatory_request *request)
11249 {
11250         /* Userspace can always count this one always being set */
11251         if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
11252                 goto nla_put_failure;
11253
11254         if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
11255                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11256                                NL80211_REGDOM_TYPE_WORLD))
11257                         goto nla_put_failure;
11258         } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
11259                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11260                                NL80211_REGDOM_TYPE_CUSTOM_WORLD))
11261                         goto nla_put_failure;
11262         } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
11263                    request->intersect) {
11264                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11265                                NL80211_REGDOM_TYPE_INTERSECTION))
11266                         goto nla_put_failure;
11267         } else {
11268                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11269                                NL80211_REGDOM_TYPE_COUNTRY) ||
11270                     nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
11271                                    request->alpha2))
11272                         goto nla_put_failure;
11273         }
11274
11275         if (request->wiphy_idx != WIPHY_IDX_INVALID) {
11276                 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
11277
11278                 if (wiphy &&
11279                     nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
11280                         goto nla_put_failure;
11281
11282                 if (wiphy &&
11283                     wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
11284                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
11285                         goto nla_put_failure;
11286         }
11287
11288         return true;
11289
11290 nla_put_failure:
11291         return false;
11292 }
11293
11294 /*
11295  * This can happen on global regulatory changes or device specific settings
11296  * based on custom regulatory domains.
11297  */
11298 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
11299                                      struct regulatory_request *request)
11300 {
11301         struct sk_buff *msg;
11302         void *hdr;
11303
11304         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11305         if (!msg)
11306                 return;
11307
11308         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
11309         if (!hdr) {
11310                 nlmsg_free(msg);
11311                 return;
11312         }
11313
11314         if (nl80211_reg_change_event_fill(msg, request) == false)
11315                 goto nla_put_failure;
11316
11317         genlmsg_end(msg, hdr);
11318
11319         rcu_read_lock();
11320         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
11321                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
11322         rcu_read_unlock();
11323
11324         return;
11325
11326 nla_put_failure:
11327         genlmsg_cancel(msg, hdr);
11328         nlmsg_free(msg);
11329 }
11330
11331 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
11332                                     struct net_device *netdev,
11333                                     const u8 *buf, size_t len,
11334                                     enum nl80211_commands cmd, gfp_t gfp,
11335                                     int uapsd_queues)
11336 {
11337         struct sk_buff *msg;
11338         void *hdr;
11339
11340         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11341         if (!msg)
11342                 return;
11343
11344         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11345         if (!hdr) {
11346                 nlmsg_free(msg);
11347                 return;
11348         }
11349
11350         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11351             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11352             nla_put(msg, NL80211_ATTR_FRAME, len, buf))
11353                 goto nla_put_failure;
11354
11355         if (uapsd_queues >= 0) {
11356                 struct nlattr *nla_wmm =
11357                         nla_nest_start(msg, NL80211_ATTR_STA_WME);
11358                 if (!nla_wmm)
11359                         goto nla_put_failure;
11360
11361                 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
11362                                uapsd_queues))
11363                         goto nla_put_failure;
11364
11365                 nla_nest_end(msg, nla_wmm);
11366         }
11367
11368         genlmsg_end(msg, hdr);
11369
11370         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11371                                 NL80211_MCGRP_MLME, gfp);
11372         return;
11373
11374  nla_put_failure:
11375         genlmsg_cancel(msg, hdr);
11376         nlmsg_free(msg);
11377 }
11378
11379 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
11380                           struct net_device *netdev, const u8 *buf,
11381                           size_t len, gfp_t gfp)
11382 {
11383         nl80211_send_mlme_event(rdev, netdev, buf, len,
11384                                 NL80211_CMD_AUTHENTICATE, gfp, -1);
11385 }
11386
11387 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
11388                            struct net_device *netdev, const u8 *buf,
11389                            size_t len, gfp_t gfp, int uapsd_queues)
11390 {
11391         nl80211_send_mlme_event(rdev, netdev, buf, len,
11392                                 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues);
11393 }
11394
11395 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
11396                          struct net_device *netdev, const u8 *buf,
11397                          size_t len, gfp_t gfp)
11398 {
11399         nl80211_send_mlme_event(rdev, netdev, buf, len,
11400                                 NL80211_CMD_DEAUTHENTICATE, gfp, -1);
11401 }
11402
11403 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
11404                            struct net_device *netdev, const u8 *buf,
11405                            size_t len, gfp_t gfp)
11406 {
11407         nl80211_send_mlme_event(rdev, netdev, buf, len,
11408                                 NL80211_CMD_DISASSOCIATE, gfp, -1);
11409 }
11410
11411 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
11412                                   size_t len)
11413 {
11414         struct wireless_dev *wdev = dev->ieee80211_ptr;
11415         struct wiphy *wiphy = wdev->wiphy;
11416         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11417         const struct ieee80211_mgmt *mgmt = (void *)buf;
11418         u32 cmd;
11419
11420         if (WARN_ON(len < 2))
11421                 return;
11422
11423         if (ieee80211_is_deauth(mgmt->frame_control))
11424                 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
11425         else
11426                 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
11427
11428         trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
11429         nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1);
11430 }
11431 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
11432
11433 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
11434                                       struct net_device *netdev, int cmd,
11435                                       const u8 *addr, gfp_t gfp)
11436 {
11437         struct sk_buff *msg;
11438         void *hdr;
11439
11440         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11441         if (!msg)
11442                 return;
11443
11444         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11445         if (!hdr) {
11446                 nlmsg_free(msg);
11447                 return;
11448         }
11449
11450         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11451             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11452             nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
11453             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
11454                 goto nla_put_failure;
11455
11456         genlmsg_end(msg, hdr);
11457
11458         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11459                                 NL80211_MCGRP_MLME, gfp);
11460         return;
11461
11462  nla_put_failure:
11463         genlmsg_cancel(msg, hdr);
11464         nlmsg_free(msg);
11465 }
11466
11467 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
11468                                struct net_device *netdev, const u8 *addr,
11469                                gfp_t gfp)
11470 {
11471         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
11472                                   addr, gfp);
11473 }
11474
11475 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
11476                                 struct net_device *netdev, const u8 *addr,
11477                                 gfp_t gfp)
11478 {
11479         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
11480                                   addr, gfp);
11481 }
11482
11483 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
11484                                  struct net_device *netdev, const u8 *bssid,
11485                                  const u8 *req_ie, size_t req_ie_len,
11486                                  const u8 *resp_ie, size_t resp_ie_len,
11487                                  u16 status, gfp_t gfp)
11488 {
11489         struct sk_buff *msg;
11490         void *hdr;
11491
11492         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11493         if (!msg)
11494                 return;
11495
11496         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
11497         if (!hdr) {
11498                 nlmsg_free(msg);
11499                 return;
11500         }
11501
11502         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11503             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11504             (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) ||
11505             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status) ||
11506             (req_ie &&
11507              nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
11508             (resp_ie &&
11509              nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
11510                 goto nla_put_failure;
11511
11512         genlmsg_end(msg, hdr);
11513
11514         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11515                                 NL80211_MCGRP_MLME, gfp);
11516         return;
11517
11518  nla_put_failure:
11519         genlmsg_cancel(msg, hdr);
11520         nlmsg_free(msg);
11521
11522 }
11523
11524 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
11525                          struct net_device *netdev, const u8 *bssid,
11526                          const u8 *req_ie, size_t req_ie_len,
11527                          const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
11528 {
11529         struct sk_buff *msg;
11530         void *hdr;
11531
11532         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11533         if (!msg)
11534                 return;
11535
11536         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
11537         if (!hdr) {
11538                 nlmsg_free(msg);
11539                 return;
11540         }
11541
11542         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11543             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11544             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
11545             (req_ie &&
11546              nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
11547             (resp_ie &&
11548              nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
11549                 goto nla_put_failure;
11550
11551         genlmsg_end(msg, hdr);
11552
11553         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11554                                 NL80211_MCGRP_MLME, gfp);
11555         return;
11556
11557  nla_put_failure:
11558         genlmsg_cancel(msg, hdr);
11559         nlmsg_free(msg);
11560
11561 }
11562
11563 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
11564                                struct net_device *netdev, u16 reason,
11565                                const u8 *ie, size_t ie_len, bool from_ap)
11566 {
11567         struct sk_buff *msg;
11568         void *hdr;
11569
11570         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11571         if (!msg)
11572                 return;
11573
11574         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
11575         if (!hdr) {
11576                 nlmsg_free(msg);
11577                 return;
11578         }
11579
11580         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11581             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11582             (from_ap && reason &&
11583              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
11584             (from_ap &&
11585              nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
11586             (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
11587                 goto nla_put_failure;
11588
11589         genlmsg_end(msg, hdr);
11590
11591         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11592                                 NL80211_MCGRP_MLME, GFP_KERNEL);
11593         return;
11594
11595  nla_put_failure:
11596         genlmsg_cancel(msg, hdr);
11597         nlmsg_free(msg);
11598
11599 }
11600
11601 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
11602                              struct net_device *netdev, const u8 *bssid,
11603                              gfp_t gfp)
11604 {
11605         struct sk_buff *msg;
11606         void *hdr;
11607
11608         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11609         if (!msg)
11610                 return;
11611
11612         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
11613         if (!hdr) {
11614                 nlmsg_free(msg);
11615                 return;
11616         }
11617
11618         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11619             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11620             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
11621                 goto nla_put_failure;
11622
11623         genlmsg_end(msg, hdr);
11624
11625         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11626                                 NL80211_MCGRP_MLME, gfp);
11627         return;
11628
11629  nla_put_failure:
11630         genlmsg_cancel(msg, hdr);
11631         nlmsg_free(msg);
11632 }
11633
11634 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
11635                                         const u8* ie, u8 ie_len, gfp_t gfp)
11636 {
11637         struct wireless_dev *wdev = dev->ieee80211_ptr;
11638         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
11639         struct sk_buff *msg;
11640         void *hdr;
11641
11642         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
11643                 return;
11644
11645         trace_cfg80211_notify_new_peer_candidate(dev, addr);
11646
11647         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11648         if (!msg)
11649                 return;
11650
11651         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
11652         if (!hdr) {
11653                 nlmsg_free(msg);
11654                 return;
11655         }
11656
11657         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11658             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11659             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
11660             (ie_len && ie &&
11661              nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
11662                 goto nla_put_failure;
11663
11664         genlmsg_end(msg, hdr);
11665
11666         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11667                                 NL80211_MCGRP_MLME, gfp);
11668         return;
11669
11670  nla_put_failure:
11671         genlmsg_cancel(msg, hdr);
11672         nlmsg_free(msg);
11673 }
11674 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
11675
11676 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
11677                                  struct net_device *netdev, const u8 *addr,
11678                                  enum nl80211_key_type key_type, int key_id,
11679                                  const u8 *tsc, gfp_t gfp)
11680 {
11681         struct sk_buff *msg;
11682         void *hdr;
11683
11684         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11685         if (!msg)
11686                 return;
11687
11688         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
11689         if (!hdr) {
11690                 nlmsg_free(msg);
11691                 return;
11692         }
11693
11694         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11695             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11696             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
11697             nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
11698             (key_id != -1 &&
11699              nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
11700             (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
11701                 goto nla_put_failure;
11702
11703         genlmsg_end(msg, hdr);
11704
11705         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11706                                 NL80211_MCGRP_MLME, gfp);
11707         return;
11708
11709  nla_put_failure:
11710         genlmsg_cancel(msg, hdr);
11711         nlmsg_free(msg);
11712 }
11713
11714 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
11715                                     struct ieee80211_channel *channel_before,
11716                                     struct ieee80211_channel *channel_after)
11717 {
11718         struct sk_buff *msg;
11719         void *hdr;
11720         struct nlattr *nl_freq;
11721
11722         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
11723         if (!msg)
11724                 return;
11725
11726         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
11727         if (!hdr) {
11728                 nlmsg_free(msg);
11729                 return;
11730         }
11731
11732         /*
11733          * Since we are applying the beacon hint to a wiphy we know its
11734          * wiphy_idx is valid
11735          */
11736         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
11737                 goto nla_put_failure;
11738
11739         /* Before */
11740         nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
11741         if (!nl_freq)
11742                 goto nla_put_failure;
11743         if (nl80211_msg_put_channel(msg, channel_before, false))
11744                 goto nla_put_failure;
11745         nla_nest_end(msg, nl_freq);
11746
11747         /* After */
11748         nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
11749         if (!nl_freq)
11750                 goto nla_put_failure;
11751         if (nl80211_msg_put_channel(msg, channel_after, false))
11752                 goto nla_put_failure;
11753         nla_nest_end(msg, nl_freq);
11754
11755         genlmsg_end(msg, hdr);
11756
11757         rcu_read_lock();
11758         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
11759                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
11760         rcu_read_unlock();
11761
11762         return;
11763
11764 nla_put_failure:
11765         genlmsg_cancel(msg, hdr);
11766         nlmsg_free(msg);
11767 }
11768
11769 static void nl80211_send_remain_on_chan_event(
11770         int cmd, struct cfg80211_registered_device *rdev,
11771         struct wireless_dev *wdev, u64 cookie,
11772         struct ieee80211_channel *chan,
11773         unsigned int duration, gfp_t gfp)
11774 {
11775         struct sk_buff *msg;
11776         void *hdr;
11777
11778         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11779         if (!msg)
11780                 return;
11781
11782         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11783         if (!hdr) {
11784                 nlmsg_free(msg);
11785                 return;
11786         }
11787
11788         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11789             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11790                                          wdev->netdev->ifindex)) ||
11791             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
11792             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
11793             nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
11794                         NL80211_CHAN_NO_HT) ||
11795             nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
11796                 goto nla_put_failure;
11797
11798         if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
11799             nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
11800                 goto nla_put_failure;
11801
11802         genlmsg_end(msg, hdr);
11803
11804         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11805                                 NL80211_MCGRP_MLME, gfp);
11806         return;
11807
11808  nla_put_failure:
11809         genlmsg_cancel(msg, hdr);
11810         nlmsg_free(msg);
11811 }
11812
11813 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
11814                                struct ieee80211_channel *chan,
11815                                unsigned int duration, gfp_t gfp)
11816 {
11817         struct wiphy *wiphy = wdev->wiphy;
11818         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11819
11820         trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
11821         nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
11822                                           rdev, wdev, cookie, chan,
11823                                           duration, gfp);
11824 }
11825 EXPORT_SYMBOL(cfg80211_ready_on_channel);
11826
11827 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
11828                                         struct ieee80211_channel *chan,
11829                                         gfp_t gfp)
11830 {
11831         struct wiphy *wiphy = wdev->wiphy;
11832         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11833
11834         trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
11835         nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
11836                                           rdev, wdev, cookie, chan, 0, gfp);
11837 }
11838 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
11839
11840 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
11841                       struct station_info *sinfo, gfp_t gfp)
11842 {
11843         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
11844         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11845         struct sk_buff *msg;
11846
11847         trace_cfg80211_new_sta(dev, mac_addr, sinfo);
11848
11849         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11850         if (!msg)
11851                 return;
11852
11853         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
11854                                  rdev, dev, mac_addr, sinfo) < 0) {
11855                 nlmsg_free(msg);
11856                 return;
11857         }
11858
11859         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11860                                 NL80211_MCGRP_MLME, gfp);
11861 }
11862 EXPORT_SYMBOL(cfg80211_new_sta);
11863
11864 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
11865                             struct station_info *sinfo, gfp_t gfp)
11866 {
11867         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
11868         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11869         struct sk_buff *msg;
11870         struct station_info empty_sinfo = {};
11871
11872         if (!sinfo)
11873                 sinfo = &empty_sinfo;
11874
11875         trace_cfg80211_del_sta(dev, mac_addr);
11876
11877         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11878         if (!msg)
11879                 return;
11880
11881         if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
11882                                  rdev, dev, mac_addr, sinfo) < 0) {
11883                 nlmsg_free(msg);
11884                 return;
11885         }
11886
11887         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11888                                 NL80211_MCGRP_MLME, gfp);
11889 }
11890 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
11891
11892 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
11893                           enum nl80211_connect_failed_reason reason,
11894                           gfp_t gfp)
11895 {
11896         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
11897         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11898         struct sk_buff *msg;
11899         void *hdr;
11900
11901         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
11902         if (!msg)
11903                 return;
11904
11905         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
11906         if (!hdr) {
11907                 nlmsg_free(msg);
11908                 return;
11909         }
11910
11911         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11912             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
11913             nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
11914                 goto nla_put_failure;
11915
11916         genlmsg_end(msg, hdr);
11917
11918         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11919                                 NL80211_MCGRP_MLME, gfp);
11920         return;
11921
11922  nla_put_failure:
11923         genlmsg_cancel(msg, hdr);
11924         nlmsg_free(msg);
11925 }
11926 EXPORT_SYMBOL(cfg80211_conn_failed);
11927
11928 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
11929                                        const u8 *addr, gfp_t gfp)
11930 {
11931         struct wireless_dev *wdev = dev->ieee80211_ptr;
11932         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
11933         struct sk_buff *msg;
11934         void *hdr;
11935         u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid);
11936
11937         if (!nlportid)
11938                 return false;
11939
11940         msg = nlmsg_new(100, gfp);
11941         if (!msg)
11942                 return true;
11943
11944         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11945         if (!hdr) {
11946                 nlmsg_free(msg);
11947                 return true;
11948         }
11949
11950         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11951             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11952             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
11953                 goto nla_put_failure;
11954
11955         genlmsg_end(msg, hdr);
11956         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
11957         return true;
11958
11959  nla_put_failure:
11960         genlmsg_cancel(msg, hdr);
11961         nlmsg_free(msg);
11962         return true;
11963 }
11964
11965 bool cfg80211_rx_spurious_frame(struct net_device *dev,
11966                                 const u8 *addr, gfp_t gfp)
11967 {
11968         struct wireless_dev *wdev = dev->ieee80211_ptr;
11969         bool ret;
11970
11971         trace_cfg80211_rx_spurious_frame(dev, addr);
11972
11973         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
11974                     wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
11975                 trace_cfg80211_return_bool(false);
11976                 return false;
11977         }
11978         ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
11979                                          addr, gfp);
11980         trace_cfg80211_return_bool(ret);
11981         return ret;
11982 }
11983 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
11984
11985 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
11986                                         const u8 *addr, gfp_t gfp)
11987 {
11988         struct wireless_dev *wdev = dev->ieee80211_ptr;
11989         bool ret;
11990
11991         trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
11992
11993         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
11994                     wdev->iftype != NL80211_IFTYPE_P2P_GO &&
11995                     wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
11996                 trace_cfg80211_return_bool(false);
11997                 return false;
11998         }
11999         ret = __nl80211_unexpected_frame(dev,
12000                                          NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
12001                                          addr, gfp);
12002         trace_cfg80211_return_bool(ret);
12003         return ret;
12004 }
12005 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
12006
12007 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
12008                       struct wireless_dev *wdev, u32 nlportid,
12009                       int freq, int sig_dbm,
12010                       const u8 *buf, size_t len, u32 flags, gfp_t gfp)
12011 {
12012         struct net_device *netdev = wdev->netdev;
12013         struct sk_buff *msg;
12014         void *hdr;
12015
12016         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12017         if (!msg)
12018                 return -ENOMEM;
12019
12020         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
12021         if (!hdr) {
12022                 nlmsg_free(msg);
12023                 return -ENOMEM;
12024         }
12025
12026         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12027             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12028                                         netdev->ifindex)) ||
12029             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
12030             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
12031             (sig_dbm &&
12032              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
12033             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
12034             (flags &&
12035              nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
12036                 goto nla_put_failure;
12037
12038         genlmsg_end(msg, hdr);
12039
12040         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
12041
12042  nla_put_failure:
12043         genlmsg_cancel(msg, hdr);
12044         nlmsg_free(msg);
12045         return -ENOBUFS;
12046 }
12047
12048 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
12049                              const u8 *buf, size_t len, bool ack, gfp_t gfp)
12050 {
12051         struct wiphy *wiphy = wdev->wiphy;
12052         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12053         struct net_device *netdev = wdev->netdev;
12054         struct sk_buff *msg;
12055         void *hdr;
12056
12057         trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
12058
12059         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12060         if (!msg)
12061                 return;
12062
12063         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
12064         if (!hdr) {
12065                 nlmsg_free(msg);
12066                 return;
12067         }
12068
12069         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12070             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12071                                    netdev->ifindex)) ||
12072             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
12073             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
12074             nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
12075             (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
12076                 goto nla_put_failure;
12077
12078         genlmsg_end(msg, hdr);
12079
12080         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12081                                 NL80211_MCGRP_MLME, gfp);
12082         return;
12083
12084  nla_put_failure:
12085         genlmsg_cancel(msg, hdr);
12086         nlmsg_free(msg);
12087 }
12088 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
12089
12090 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
12091                                             const char *mac, gfp_t gfp)
12092 {
12093         struct wireless_dev *wdev = dev->ieee80211_ptr;
12094         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12095         struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12096         void **cb;
12097
12098         if (!msg)
12099                 return NULL;
12100
12101         cb = (void **)msg->cb;
12102
12103         cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
12104         if (!cb[0]) {
12105                 nlmsg_free(msg);
12106                 return NULL;
12107         }
12108
12109         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12110             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
12111                 goto nla_put_failure;
12112
12113         if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
12114                 goto nla_put_failure;
12115
12116         cb[1] = nla_nest_start(msg, NL80211_ATTR_CQM);
12117         if (!cb[1])
12118                 goto nla_put_failure;
12119
12120         cb[2] = rdev;
12121
12122         return msg;
12123  nla_put_failure:
12124         nlmsg_free(msg);
12125         return NULL;
12126 }
12127
12128 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
12129 {
12130         void **cb = (void **)msg->cb;
12131         struct cfg80211_registered_device *rdev = cb[2];
12132
12133         nla_nest_end(msg, cb[1]);
12134         genlmsg_end(msg, cb[0]);
12135
12136         memset(msg->cb, 0, sizeof(msg->cb));
12137
12138         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12139                                 NL80211_MCGRP_MLME, gfp);
12140 }
12141
12142 void cfg80211_cqm_rssi_notify(struct net_device *dev,
12143                               enum nl80211_cqm_rssi_threshold_event rssi_event,
12144                               gfp_t gfp)
12145 {
12146         struct sk_buff *msg;
12147
12148         trace_cfg80211_cqm_rssi_notify(dev, rssi_event);
12149
12150         if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
12151                     rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
12152                 return;
12153
12154         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
12155         if (!msg)
12156                 return;
12157
12158         if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
12159                         rssi_event))
12160                 goto nla_put_failure;
12161
12162         cfg80211_send_cqm(msg, gfp);
12163
12164         return;
12165
12166  nla_put_failure:
12167         nlmsg_free(msg);
12168 }
12169 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
12170
12171 void cfg80211_cqm_txe_notify(struct net_device *dev,
12172                              const u8 *peer, u32 num_packets,
12173                              u32 rate, u32 intvl, gfp_t gfp)
12174 {
12175         struct sk_buff *msg;
12176
12177         msg = cfg80211_prepare_cqm(dev, peer, gfp);
12178         if (!msg)
12179                 return;
12180
12181         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
12182                 goto nla_put_failure;
12183
12184         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
12185                 goto nla_put_failure;
12186
12187         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
12188                 goto nla_put_failure;
12189
12190         cfg80211_send_cqm(msg, gfp);
12191         return;
12192
12193  nla_put_failure:
12194         nlmsg_free(msg);
12195 }
12196 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
12197
12198 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
12199                                  const u8 *peer, u32 num_packets, gfp_t gfp)
12200 {
12201         struct sk_buff *msg;
12202
12203         trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
12204
12205         msg = cfg80211_prepare_cqm(dev, peer, gfp);
12206         if (!msg)
12207                 return;
12208
12209         if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
12210                 goto nla_put_failure;
12211
12212         cfg80211_send_cqm(msg, gfp);
12213         return;
12214
12215  nla_put_failure:
12216         nlmsg_free(msg);
12217 }
12218 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
12219
12220 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
12221 {
12222         struct sk_buff *msg;
12223
12224         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
12225         if (!msg)
12226                 return;
12227
12228         if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
12229                 goto nla_put_failure;
12230
12231         cfg80211_send_cqm(msg, gfp);
12232         return;
12233
12234  nla_put_failure:
12235         nlmsg_free(msg);
12236 }
12237 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
12238
12239 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
12240                                      struct net_device *netdev, const u8 *bssid,
12241                                      const u8 *replay_ctr, gfp_t gfp)
12242 {
12243         struct sk_buff *msg;
12244         struct nlattr *rekey_attr;
12245         void *hdr;
12246
12247         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12248         if (!msg)
12249                 return;
12250
12251         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
12252         if (!hdr) {
12253                 nlmsg_free(msg);
12254                 return;
12255         }
12256
12257         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12258             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12259             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
12260                 goto nla_put_failure;
12261
12262         rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
12263         if (!rekey_attr)
12264                 goto nla_put_failure;
12265
12266         if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
12267                     NL80211_REPLAY_CTR_LEN, replay_ctr))
12268                 goto nla_put_failure;
12269
12270         nla_nest_end(msg, rekey_attr);
12271
12272         genlmsg_end(msg, hdr);
12273
12274         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12275                                 NL80211_MCGRP_MLME, gfp);
12276         return;
12277
12278  nla_put_failure:
12279         genlmsg_cancel(msg, hdr);
12280         nlmsg_free(msg);
12281 }
12282
12283 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
12284                                const u8 *replay_ctr, gfp_t gfp)
12285 {
12286         struct wireless_dev *wdev = dev->ieee80211_ptr;
12287         struct wiphy *wiphy = wdev->wiphy;
12288         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12289
12290         trace_cfg80211_gtk_rekey_notify(dev, bssid);
12291         nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
12292 }
12293 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
12294
12295 static void
12296 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
12297                                struct net_device *netdev, int index,
12298                                const u8 *bssid, bool preauth, gfp_t gfp)
12299 {
12300         struct sk_buff *msg;
12301         struct nlattr *attr;
12302         void *hdr;
12303
12304         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12305         if (!msg)
12306                 return;
12307
12308         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
12309         if (!hdr) {
12310                 nlmsg_free(msg);
12311                 return;
12312         }
12313
12314         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12315             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
12316                 goto nla_put_failure;
12317
12318         attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
12319         if (!attr)
12320                 goto nla_put_failure;
12321
12322         if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
12323             nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
12324             (preauth &&
12325              nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
12326                 goto nla_put_failure;
12327
12328         nla_nest_end(msg, attr);
12329
12330         genlmsg_end(msg, hdr);
12331
12332         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12333                                 NL80211_MCGRP_MLME, gfp);
12334         return;
12335
12336  nla_put_failure:
12337         genlmsg_cancel(msg, hdr);
12338         nlmsg_free(msg);
12339 }
12340
12341 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
12342                                      const u8 *bssid, bool preauth, gfp_t gfp)
12343 {
12344         struct wireless_dev *wdev = dev->ieee80211_ptr;
12345         struct wiphy *wiphy = wdev->wiphy;
12346         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12347
12348         trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
12349         nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
12350 }
12351 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
12352
12353 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
12354                                      struct net_device *netdev,
12355                                      struct cfg80211_chan_def *chandef,
12356                                      gfp_t gfp,
12357                                      enum nl80211_commands notif,
12358                                      u8 count)
12359 {
12360         struct sk_buff *msg;
12361         void *hdr;
12362
12363         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12364         if (!msg)
12365                 return;
12366
12367         hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
12368         if (!hdr) {
12369                 nlmsg_free(msg);
12370                 return;
12371         }
12372
12373         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
12374                 goto nla_put_failure;
12375
12376         if (nl80211_send_chandef(msg, chandef))
12377                 goto nla_put_failure;
12378
12379         if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) &&
12380             (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count)))
12381                         goto nla_put_failure;
12382
12383         genlmsg_end(msg, hdr);
12384
12385         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12386                                 NL80211_MCGRP_MLME, gfp);
12387         return;
12388
12389  nla_put_failure:
12390         genlmsg_cancel(msg, hdr);
12391         nlmsg_free(msg);
12392 }
12393
12394 void cfg80211_ch_switch_notify(struct net_device *dev,
12395                                struct cfg80211_chan_def *chandef)
12396 {
12397         struct wireless_dev *wdev = dev->ieee80211_ptr;
12398         struct wiphy *wiphy = wdev->wiphy;
12399         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12400
12401         ASSERT_WDEV_LOCK(wdev);
12402
12403         trace_cfg80211_ch_switch_notify(dev, chandef);
12404
12405         wdev->chandef = *chandef;
12406         wdev->preset_chandef = *chandef;
12407         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
12408                                  NL80211_CMD_CH_SWITCH_NOTIFY, 0);
12409 }
12410 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
12411
12412 void cfg80211_ch_switch_started_notify(struct net_device *dev,
12413                                        struct cfg80211_chan_def *chandef,
12414                                        u8 count)
12415 {
12416         struct wireless_dev *wdev = dev->ieee80211_ptr;
12417         struct wiphy *wiphy = wdev->wiphy;
12418         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12419
12420         trace_cfg80211_ch_switch_started_notify(dev, chandef);
12421
12422         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
12423                                  NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count);
12424 }
12425 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
12426
12427 void
12428 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
12429                      const struct cfg80211_chan_def *chandef,
12430                      enum nl80211_radar_event event,
12431                      struct net_device *netdev, gfp_t gfp)
12432 {
12433         struct sk_buff *msg;
12434         void *hdr;
12435
12436         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12437         if (!msg)
12438                 return;
12439
12440         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
12441         if (!hdr) {
12442                 nlmsg_free(msg);
12443                 return;
12444         }
12445
12446         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
12447                 goto nla_put_failure;
12448
12449         /* NOP and radar events don't need a netdev parameter */
12450         if (netdev) {
12451                 struct wireless_dev *wdev = netdev->ieee80211_ptr;
12452
12453                 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12454                     nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12455                         goto nla_put_failure;
12456         }
12457
12458         if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
12459                 goto nla_put_failure;
12460
12461         if (nl80211_send_chandef(msg, chandef))
12462                 goto nla_put_failure;
12463
12464         genlmsg_end(msg, hdr);
12465
12466         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12467                                 NL80211_MCGRP_MLME, gfp);
12468         return;
12469
12470  nla_put_failure:
12471         genlmsg_cancel(msg, hdr);
12472         nlmsg_free(msg);
12473 }
12474
12475 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
12476                            u64 cookie, bool acked, gfp_t gfp)
12477 {
12478         struct wireless_dev *wdev = dev->ieee80211_ptr;
12479         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12480         struct sk_buff *msg;
12481         void *hdr;
12482
12483         trace_cfg80211_probe_status(dev, addr, cookie, acked);
12484
12485         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12486
12487         if (!msg)
12488                 return;
12489
12490         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
12491         if (!hdr) {
12492                 nlmsg_free(msg);
12493                 return;
12494         }
12495
12496         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12497             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
12498             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
12499             nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
12500             (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
12501                 goto nla_put_failure;
12502
12503         genlmsg_end(msg, hdr);
12504
12505         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12506                                 NL80211_MCGRP_MLME, gfp);
12507         return;
12508
12509  nla_put_failure:
12510         genlmsg_cancel(msg, hdr);
12511         nlmsg_free(msg);
12512 }
12513 EXPORT_SYMBOL(cfg80211_probe_status);
12514
12515 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
12516                                  const u8 *frame, size_t len,
12517                                  int freq, int sig_dbm)
12518 {
12519         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12520         struct sk_buff *msg;
12521         void *hdr;
12522         struct cfg80211_beacon_registration *reg;
12523
12524         trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
12525
12526         spin_lock_bh(&rdev->beacon_registrations_lock);
12527         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
12528                 msg = nlmsg_new(len + 100, GFP_ATOMIC);
12529                 if (!msg) {
12530                         spin_unlock_bh(&rdev->beacon_registrations_lock);
12531                         return;
12532                 }
12533
12534                 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
12535                 if (!hdr)
12536                         goto nla_put_failure;
12537
12538                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12539                     (freq &&
12540                      nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
12541                     (sig_dbm &&
12542                      nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
12543                     nla_put(msg, NL80211_ATTR_FRAME, len, frame))
12544                         goto nla_put_failure;
12545
12546                 genlmsg_end(msg, hdr);
12547
12548                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
12549         }
12550         spin_unlock_bh(&rdev->beacon_registrations_lock);
12551         return;
12552
12553  nla_put_failure:
12554         spin_unlock_bh(&rdev->beacon_registrations_lock);
12555         if (hdr)
12556                 genlmsg_cancel(msg, hdr);
12557         nlmsg_free(msg);
12558 }
12559 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
12560
12561 #ifdef CONFIG_PM
12562 static int cfg80211_net_detect_results(struct sk_buff *msg,
12563                                        struct cfg80211_wowlan_wakeup *wakeup)
12564 {
12565         struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
12566         struct nlattr *nl_results, *nl_match, *nl_freqs;
12567         int i, j;
12568
12569         nl_results = nla_nest_start(
12570                 msg, NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
12571         if (!nl_results)
12572                 return -EMSGSIZE;
12573
12574         for (i = 0; i < nd->n_matches; i++) {
12575                 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
12576
12577                 nl_match = nla_nest_start(msg, i);
12578                 if (!nl_match)
12579                         break;
12580
12581                 /* The SSID attribute is optional in nl80211, but for
12582                  * simplicity reasons it's always present in the
12583                  * cfg80211 structure.  If a driver can't pass the
12584                  * SSID, that needs to be changed.  A zero length SSID
12585                  * is still a valid SSID (wildcard), so it cannot be
12586                  * used for this purpose.
12587                  */
12588                 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
12589                             match->ssid.ssid)) {
12590                         nla_nest_cancel(msg, nl_match);
12591                         goto out;
12592                 }
12593
12594                 if (match->n_channels) {
12595                         nl_freqs = nla_nest_start(
12596                                 msg, NL80211_ATTR_SCAN_FREQUENCIES);
12597                         if (!nl_freqs) {
12598                                 nla_nest_cancel(msg, nl_match);
12599                                 goto out;
12600                         }
12601
12602                         for (j = 0; j < match->n_channels; j++) {
12603                                 if (nla_put_u32(msg, j, match->channels[j])) {
12604                                         nla_nest_cancel(msg, nl_freqs);
12605                                         nla_nest_cancel(msg, nl_match);
12606                                         goto out;
12607                                 }
12608                         }
12609
12610                         nla_nest_end(msg, nl_freqs);
12611                 }
12612
12613                 nla_nest_end(msg, nl_match);
12614         }
12615
12616 out:
12617         nla_nest_end(msg, nl_results);
12618         return 0;
12619 }
12620
12621 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
12622                                    struct cfg80211_wowlan_wakeup *wakeup,
12623                                    gfp_t gfp)
12624 {
12625         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12626         struct sk_buff *msg;
12627         void *hdr;
12628         int size = 200;
12629
12630         trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
12631
12632         if (wakeup)
12633                 size += wakeup->packet_present_len;
12634
12635         msg = nlmsg_new(size, gfp);
12636         if (!msg)
12637                 return;
12638
12639         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
12640         if (!hdr)
12641                 goto free_msg;
12642
12643         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12644             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12645                 goto free_msg;
12646
12647         if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12648                                         wdev->netdev->ifindex))
12649                 goto free_msg;
12650
12651         if (wakeup) {
12652                 struct nlattr *reasons;
12653
12654                 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
12655                 if (!reasons)
12656                         goto free_msg;
12657
12658                 if (wakeup->disconnect &&
12659                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
12660                         goto free_msg;
12661                 if (wakeup->magic_pkt &&
12662                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
12663                         goto free_msg;
12664                 if (wakeup->gtk_rekey_failure &&
12665                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
12666                         goto free_msg;
12667                 if (wakeup->eap_identity_req &&
12668                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
12669                         goto free_msg;
12670                 if (wakeup->four_way_handshake &&
12671                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
12672                         goto free_msg;
12673                 if (wakeup->rfkill_release &&
12674                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
12675                         goto free_msg;
12676
12677                 if (wakeup->pattern_idx >= 0 &&
12678                     nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
12679                                 wakeup->pattern_idx))
12680                         goto free_msg;
12681
12682                 if (wakeup->tcp_match &&
12683                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
12684                         goto free_msg;
12685
12686                 if (wakeup->tcp_connlost &&
12687                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
12688                         goto free_msg;
12689
12690                 if (wakeup->tcp_nomoretokens &&
12691                     nla_put_flag(msg,
12692                                  NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
12693                         goto free_msg;
12694
12695                 if (wakeup->packet) {
12696                         u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
12697                         u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
12698
12699                         if (!wakeup->packet_80211) {
12700                                 pkt_attr =
12701                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
12702                                 len_attr =
12703                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
12704                         }
12705
12706                         if (wakeup->packet_len &&
12707                             nla_put_u32(msg, len_attr, wakeup->packet_len))
12708                                 goto free_msg;
12709
12710                         if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
12711                                     wakeup->packet))
12712                                 goto free_msg;
12713                 }
12714
12715                 if (wakeup->net_detect &&
12716                     cfg80211_net_detect_results(msg, wakeup))
12717                                 goto free_msg;
12718
12719                 nla_nest_end(msg, reasons);
12720         }
12721
12722         genlmsg_end(msg, hdr);
12723
12724         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12725                                 NL80211_MCGRP_MLME, gfp);
12726         return;
12727
12728  free_msg:
12729         nlmsg_free(msg);
12730 }
12731 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
12732 #endif
12733
12734 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
12735                                 enum nl80211_tdls_operation oper,
12736                                 u16 reason_code, gfp_t gfp)
12737 {
12738         struct wireless_dev *wdev = dev->ieee80211_ptr;
12739         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12740         struct sk_buff *msg;
12741         void *hdr;
12742
12743         trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
12744                                          reason_code);
12745
12746         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12747         if (!msg)
12748                 return;
12749
12750         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
12751         if (!hdr) {
12752                 nlmsg_free(msg);
12753                 return;
12754         }
12755
12756         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12757             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
12758             nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
12759             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
12760             (reason_code > 0 &&
12761              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
12762                 goto nla_put_failure;
12763
12764         genlmsg_end(msg, hdr);
12765
12766         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12767                                 NL80211_MCGRP_MLME, gfp);
12768         return;
12769
12770  nla_put_failure:
12771         genlmsg_cancel(msg, hdr);
12772         nlmsg_free(msg);
12773 }
12774 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
12775
12776 static int nl80211_netlink_notify(struct notifier_block * nb,
12777                                   unsigned long state,
12778                                   void *_notify)
12779 {
12780         struct netlink_notify *notify = _notify;
12781         struct cfg80211_registered_device *rdev;
12782         struct wireless_dev *wdev;
12783         struct cfg80211_beacon_registration *reg, *tmp;
12784
12785         if (state != NETLINK_URELEASE)
12786                 return NOTIFY_DONE;
12787
12788         rcu_read_lock();
12789
12790         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
12791                 bool schedule_destroy_work = false;
12792                 bool schedule_scan_stop = false;
12793                 struct cfg80211_sched_scan_request *sched_scan_req =
12794                         rcu_dereference(rdev->sched_scan_req);
12795
12796                 if (sched_scan_req && notify->portid &&
12797                     sched_scan_req->owner_nlportid == notify->portid)
12798                         schedule_scan_stop = true;
12799
12800                 list_for_each_entry_rcu(wdev, &rdev->wdev_list, list) {
12801                         cfg80211_mlme_unregister_socket(wdev, notify->portid);
12802
12803                         if (wdev->owner_nlportid == notify->portid)
12804                                 schedule_destroy_work = true;
12805                 }
12806
12807                 spin_lock_bh(&rdev->beacon_registrations_lock);
12808                 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
12809                                          list) {
12810                         if (reg->nlportid == notify->portid) {
12811                                 list_del(&reg->list);
12812                                 kfree(reg);
12813                                 break;
12814                         }
12815                 }
12816                 spin_unlock_bh(&rdev->beacon_registrations_lock);
12817
12818                 if (schedule_destroy_work) {
12819                         struct cfg80211_iface_destroy *destroy;
12820
12821                         destroy = kzalloc(sizeof(*destroy), GFP_ATOMIC);
12822                         if (destroy) {
12823                                 destroy->nlportid = notify->portid;
12824                                 spin_lock(&rdev->destroy_list_lock);
12825                                 list_add(&destroy->list, &rdev->destroy_list);
12826                                 spin_unlock(&rdev->destroy_list_lock);
12827                                 schedule_work(&rdev->destroy_work);
12828                         }
12829                 } else if (schedule_scan_stop) {
12830                         sched_scan_req->owner_nlportid = 0;
12831
12832                         if (rdev->ops->sched_scan_stop &&
12833                             rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
12834                                 schedule_work(&rdev->sched_scan_stop_wk);
12835                 }
12836         }
12837
12838         rcu_read_unlock();
12839
12840         /*
12841          * It is possible that the user space process that is controlling the
12842          * indoor setting disappeared, so notify the regulatory core.
12843          */
12844         regulatory_netlink_notify(notify->portid);
12845         return NOTIFY_OK;
12846 }
12847
12848 static struct notifier_block nl80211_netlink_notifier = {
12849         .notifier_call = nl80211_netlink_notify,
12850 };
12851
12852 void cfg80211_ft_event(struct net_device *netdev,
12853                        struct cfg80211_ft_event_params *ft_event)
12854 {
12855         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
12856         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12857         struct sk_buff *msg;
12858         void *hdr;
12859
12860         trace_cfg80211_ft_event(wiphy, netdev, ft_event);
12861
12862         if (!ft_event->target_ap)
12863                 return;
12864
12865         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12866         if (!msg)
12867                 return;
12868
12869         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
12870         if (!hdr)
12871                 goto out;
12872
12873         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12874             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12875             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
12876                 goto out;
12877
12878         if (ft_event->ies &&
12879             nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
12880                 goto out;
12881         if (ft_event->ric_ies &&
12882             nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
12883                     ft_event->ric_ies))
12884                 goto out;
12885
12886         genlmsg_end(msg, hdr);
12887
12888         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12889                                 NL80211_MCGRP_MLME, GFP_KERNEL);
12890         return;
12891  out:
12892         nlmsg_free(msg);
12893 }
12894 EXPORT_SYMBOL(cfg80211_ft_event);
12895
12896 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
12897 {
12898         struct cfg80211_registered_device *rdev;
12899         struct sk_buff *msg;
12900         void *hdr;
12901         u32 nlportid;
12902
12903         rdev = wiphy_to_rdev(wdev->wiphy);
12904         if (!rdev->crit_proto_nlportid)
12905                 return;
12906
12907         nlportid = rdev->crit_proto_nlportid;
12908         rdev->crit_proto_nlportid = 0;
12909
12910         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12911         if (!msg)
12912                 return;
12913
12914         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
12915         if (!hdr)
12916                 goto nla_put_failure;
12917
12918         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12919             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12920                 goto nla_put_failure;
12921
12922         genlmsg_end(msg, hdr);
12923
12924         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
12925         return;
12926
12927  nla_put_failure:
12928         if (hdr)
12929                 genlmsg_cancel(msg, hdr);
12930         nlmsg_free(msg);
12931
12932 }
12933 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
12934
12935 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
12936 {
12937         struct wiphy *wiphy = wdev->wiphy;
12938         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12939         struct sk_buff *msg;
12940         void *hdr;
12941
12942         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12943         if (!msg)
12944                 return;
12945
12946         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
12947         if (!hdr)
12948                 goto out;
12949
12950         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12951             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
12952             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12953                 goto out;
12954
12955         genlmsg_end(msg, hdr);
12956
12957         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
12958                                 NL80211_MCGRP_MLME, GFP_KERNEL);
12959         return;
12960  out:
12961         nlmsg_free(msg);
12962 }
12963
12964 /* initialisation/exit functions */
12965
12966 int nl80211_init(void)
12967 {
12968         int err;
12969
12970         err = genl_register_family_with_ops_groups(&nl80211_fam, nl80211_ops,
12971                                                    nl80211_mcgrps);
12972         if (err)
12973                 return err;
12974
12975         err = netlink_register_notifier(&nl80211_netlink_notifier);
12976         if (err)
12977                 goto err_out;
12978
12979         return 0;
12980  err_out:
12981         genl_unregister_family(&nl80211_fam);
12982         return err;
12983 }
12984
12985 void nl80211_exit(void)
12986 {
12987         netlink_unregister_notifier(&nl80211_netlink_notifier);
12988         genl_unregister_family(&nl80211_fam);
12989 }