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  */
   6
   7 #include <linux/if.h>
   8 #include <linux/module.h>
   9 #include <linux/err.h>
  10 #include <linux/slab.h>
  11 #include <linux/list.h>
  12 #include <linux/if_ether.h>
  13 #include <linux/ieee80211.h>
  14 #include <linux/nl80211.h>
  15 #include <linux/rtnetlink.h>
  16 #include <linux/netlink.h>
  17 #include <linux/etherdevice.h>
  18 #include <net/net_namespace.h>
  19 #include <net/genetlink.h>
  20 #include <net/cfg80211.h>
  21 #include <net/sock.h>
  22 #include <net/inet_connection_sock.h>
  23 #include "core.h"
  24 #include "nl80211.h"
  25 #include "reg.h"
  26 #include "rdev-ops.h"
  27
  28 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
  29                                    struct genl_info *info,
  30                                    struct cfg80211_crypto_settings *settings,
  31                                    int cipher_limit);
  32
  33 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
  34                             struct genl_info *info);
  35 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
  36                               struct genl_info *info);
  37
  38 /* the netlink family */
  39 static struct genl_family nl80211_fam = {
  40         .id = GENL_ID_GENERATE,         /* don't bother with a hardcoded ID */
  41         .name = NL80211_GENL_NAME,      /* have users key off the name instead */
  42         .hdrsize = 0,                   /* no private header */
  43         .version = 1,                   /* no particular meaning now */
  44         .maxattr = NL80211_ATTR_MAX,
  45         .netnsok = true,
  46         .pre_doit = nl80211_pre_doit,
  47         .post_doit = nl80211_post_doit,
  48 };
  49
  50 /* multicast groups */
  51 enum nl80211_multicast_groups {
  52         NL80211_MCGRP_CONFIG,
  53         NL80211_MCGRP_SCAN,
  54         NL80211_MCGRP_REGULATORY,
  55         NL80211_MCGRP_MLME,
  56         NL80211_MCGRP_VENDOR,
  57         NL80211_MCGRP_TESTMODE /* keep last - ifdef! */
  58 };
  59
  60 static const struct genl_multicast_group nl80211_mcgrps[] = {
  61         [NL80211_MCGRP_CONFIG] = { .name = "config", },
  62         [NL80211_MCGRP_SCAN] = { .name = "scan", },
  63         [NL80211_MCGRP_REGULATORY] = { .name = "regulatory", },
  64         [NL80211_MCGRP_MLME] = { .name = "mlme", },
  65         [NL80211_MCGRP_VENDOR] = { .name = "vendor", },
  66 #ifdef CONFIG_NL80211_TESTMODE
  67         [NL80211_MCGRP_TESTMODE] = { .name = "testmode", }
  68 #endif
  69 };
  70
  71 /* returns ERR_PTR values */
  72 static struct wireless_dev *
  73 __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs)
  74 {
  75         struct cfg80211_registered_device *rdev;
  76         struct wireless_dev *result = NULL;
  77         bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
  78         bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
  79         u64 wdev_id;
  80         int wiphy_idx = -1;
  81         int ifidx = -1;
  82
  83         ASSERT_RTNL();
  84
  85         if (!have_ifidx && !have_wdev_id)
  86                 return ERR_PTR(-EINVAL);
  87
  88         if (have_ifidx)
  89                 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
  90         if (have_wdev_id) {
  91                 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
  92                 wiphy_idx = wdev_id >> 32;
  93         }
  94
  95         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
  96                 struct wireless_dev *wdev;
  97
  98                 if (wiphy_net(&rdev->wiphy) != netns)
  99                         continue;
 100
 101                 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
 102                         continue;
 103
 104                 list_for_each_entry(wdev, &rdev->wdev_list, list) {
 105                         if (have_ifidx && wdev->netdev &&
 106                             wdev->netdev->ifindex == ifidx) {
 107                                 result = wdev;
 108                                 break;
 109                         }
 110                         if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
 111                                 result = wdev;
 112                                 break;
 113                         }
 114                 }
 115
 116                 if (result)
 117                         break;
 118         }
 119
 120         if (result)
 121                 return result;
 122         return ERR_PTR(-ENODEV);
 123 }
 124
 125 static struct cfg80211_registered_device *
 126 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
 127 {
 128         struct cfg80211_registered_device *rdev = NULL, *tmp;
 129         struct net_device *netdev;
 130
 131         ASSERT_RTNL();
 132
 133         if (!attrs[NL80211_ATTR_WIPHY] &&
 134             !attrs[NL80211_ATTR_IFINDEX] &&
 135             !attrs[NL80211_ATTR_WDEV])
 136                 return ERR_PTR(-EINVAL);
 137
 138         if (attrs[NL80211_ATTR_WIPHY])
 139                 rdev = cfg80211_rdev_by_wiphy_idx(
 140                                 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
 141
 142         if (attrs[NL80211_ATTR_WDEV]) {
 143                 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
 144                 struct wireless_dev *wdev;
 145                 bool found = false;
 146
 147                 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
 148                 if (tmp) {
 149                         /* make sure wdev exists */
 150                         list_for_each_entry(wdev, &tmp->wdev_list, list) {
 151                                 if (wdev->identifier != (u32)wdev_id)
 152                                         continue;
 153                                 found = true;
 154                                 break;
 155                         }
 156
 157                         if (!found)
 158                                 tmp = NULL;
 159
 160                         if (rdev && tmp != rdev)
 161                                 return ERR_PTR(-EINVAL);
 162                         rdev = tmp;
 163                 }
 164         }
 165
 166         if (attrs[NL80211_ATTR_IFINDEX]) {
 167                 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
 168                 netdev = __dev_get_by_index(netns, ifindex);
 169                 if (netdev) {
 170                         if (netdev->ieee80211_ptr)
 171                                 tmp = wiphy_to_dev(
 172                                                 netdev->ieee80211_ptr->wiphy);
 173                         else
 174                                 tmp = NULL;
 175
 176                         /* not wireless device -- return error */
 177                         if (!tmp)
 178                                 return ERR_PTR(-EINVAL);
 179
 180                         /* mismatch -- return error */
 181                         if (rdev && tmp != rdev)
 182                                 return ERR_PTR(-EINVAL);
 183
 184                         rdev = tmp;
 185                 }
 186         }
 187
 188         if (!rdev)
 189                 return ERR_PTR(-ENODEV);
 190
 191         if (netns != wiphy_net(&rdev->wiphy))
 192                 return ERR_PTR(-ENODEV);
 193
 194         return rdev;
 195 }
 196
 197 /*
 198  * This function returns a pointer to the driver
 199  * that the genl_info item that is passed refers to.
 200  *
 201  * The result of this can be a PTR_ERR and hence must
 202  * be checked with IS_ERR() for errors.
 203  */
 204 static struct cfg80211_registered_device *
 205 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
 206 {
 207         return __cfg80211_rdev_from_attrs(netns, info->attrs);
 208 }
 209
 210 /* policy for the attributes */
 211 static const struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] = {
 212         [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
 213         [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
 214                                       .len = 20-1 },
 215         [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
 216
 217         [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
 218         [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
 219         [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
 220         [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
 221         [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
 222
 223         [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
 224         [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
 225         [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
 226         [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
 227         [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
 228
 229         [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
 230         [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
 231         [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
 232
 233         [NL80211_ATTR_MAC] = { .len = ETH_ALEN },
 234         [NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN },
 235
 236         [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
 237         [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
 238                                     .len = WLAN_MAX_KEY_LEN },
 239         [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
 240         [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
 241         [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
 242         [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 243         [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 },
 244
 245         [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
 246         [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
 247         [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
 248                                        .len = IEEE80211_MAX_DATA_LEN },
 249         [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
 250                                        .len = IEEE80211_MAX_DATA_LEN },
 251         [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
 252         [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
 253         [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
 254         [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
 255                                                .len = NL80211_MAX_SUPP_RATES },
 256         [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
 257         [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
 258         [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
 259         [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
 260                                    .len = IEEE80211_MAX_MESH_ID_LEN },
 261         [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
 262
 263         [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
 264         [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
 265
 266         [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
 267         [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
 268         [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
 269         [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
 270                                            .len = NL80211_MAX_SUPP_RATES },
 271         [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
 272
 273         [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
 274         [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
 275
 276         [NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN },
 277
 278         [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
 279         [NL80211_ATTR_IE] = { .type = NLA_BINARY,
 280                               .len = IEEE80211_MAX_DATA_LEN },
 281         [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
 282         [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
 283
 284         [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
 285                                 .len = IEEE80211_MAX_SSID_LEN },
 286         [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
 287         [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
 288         [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
 289         [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
 290         [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
 291         [NL80211_ATTR_STA_FLAGS2] = {
 292                 .len = sizeof(struct nl80211_sta_flag_update),
 293         },
 294         [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
 295         [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
 296         [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
 297         [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
 298         [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
 299         [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
 300         [NL80211_ATTR_PID] = { .type = NLA_U32 },
 301         [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
 302         [NL80211_ATTR_PMKID] = { .type = NLA_BINARY,
 303                                  .len = WLAN_PMKID_LEN },
 304         [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
 305         [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
 306         [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
 307         [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
 308                                  .len = IEEE80211_MAX_DATA_LEN },
 309         [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
 310         [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
 311         [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
 312         [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
 313         [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
 314         [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
 315         [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
 316         [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
 317         [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
 318         [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
 319         [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
 320         [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
 321         [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 322         [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
 323         [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 },
 324         [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
 325         [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
 326         [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
 327         [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 },
 328         [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY,
 329                                          .len = IEEE80211_MAX_DATA_LEN },
 330         [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY,
 331                                          .len = IEEE80211_MAX_DATA_LEN },
 332         [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
 333         [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
 334         [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
 335         [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
 336         [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
 337         [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
 338         [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
 339         [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
 340         [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
 341         [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
 342                                       .len = IEEE80211_MAX_DATA_LEN },
 343         [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
 344         [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
 345         [NL80211_ATTR_HT_CAPABILITY_MASK] = {
 346                 .len = NL80211_HT_CAPABILITY_LEN
 347         },
 348         [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
 349         [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
 350         [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
 351         [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
 352         [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
 353         [NL80211_ATTR_SAE_DATA] = { .type = NLA_BINARY, },
 354         [NL80211_ATTR_VHT_CAPABILITY] = { .len = NL80211_VHT_CAPABILITY_LEN },
 355         [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
 356         [NL80211_ATTR_P2P_CTWINDOW] = { .type = NLA_U8 },
 357         [NL80211_ATTR_P2P_OPPPS] = { .type = NLA_U8 },
 358         [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
 359         [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
 360         [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
 361         [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
 362         [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
 363         [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
 364         [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
 365                 .len = NL80211_VHT_CAPABILITY_LEN,
 366         },
 367         [NL80211_ATTR_MDID] = { .type = NLA_U16 },
 368         [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
 369                                   .len = IEEE80211_MAX_DATA_LEN },
 370         [NL80211_ATTR_PEER_AID] = { .type = NLA_U16 },
 371         [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
 372         [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
 373         [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
 374         [NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_U16 },
 375         [NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_U16 },
 376         [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY },
 377         [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY },
 378         [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
 379         [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
 380         [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
 381         [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
 382         [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
 383         [NL80211_ATTR_QOS_MAP] = { .type = NLA_BINARY,
 384                                    .len = IEEE80211_QOS_MAP_LEN_MAX },
 385         [NL80211_ATTR_MAC_HINT] = { .len = ETH_ALEN },
 386         [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
 387         [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
 388 };
 389
 390 /* policy for the key attributes */
 391 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
 392         [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
 393         [NL80211_KEY_IDX] = { .type = NLA_U8 },
 394         [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
 395         [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 396         [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
 397         [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
 398         [NL80211_KEY_TYPE] = { .type = NLA_U32 },
 399         [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 400 };
 401
 402 /* policy for the key default flags */
 403 static const struct nla_policy
 404 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
 405         [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
 406         [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
 407 };
 408
 409 /* policy for WoWLAN attributes */
 410 static const struct nla_policy
 411 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
 412         [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
 413         [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
 414         [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
 415         [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
 416         [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
 417         [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
 418         [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
 419         [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
 420         [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
 421 };
 422
 423 static const struct nla_policy
 424 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
 425         [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
 426         [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
 427         [NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN },
 428         [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
 429         [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
 430         [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 },
 431         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
 432                 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
 433         },
 434         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
 435                 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
 436         },
 437         [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
 438         [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 },
 439         [NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 },
 440 };
 441
 442 /* policy for coalesce rule attributes */
 443 static const struct nla_policy
 444 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
 445         [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
 446         [NL80211_ATTR_COALESCE_RULE_CONDITION] = { .type = NLA_U32 },
 447         [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
 448 };
 449
 450 /* policy for GTK rekey offload attributes */
 451 static const struct nla_policy
 452 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
 453         [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
 454         [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
 455         [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
 456 };
 457
 458 static const struct nla_policy
 459 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
 460         [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
 461                                                  .len = IEEE80211_MAX_SSID_LEN },
 462         [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
 463 };
 464
 465 static int nl80211_prepare_wdev_dump(struct sk_buff *skb,
 466                                      struct netlink_callback *cb,
 467                                      struct cfg80211_registered_device **rdev,
 468                                      struct wireless_dev **wdev)
 469 {
 470         int err;
 471
 472         rtnl_lock();
 473
 474         if (!cb->args[0]) {
 475                 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
 476                                   nl80211_fam.attrbuf, nl80211_fam.maxattr,
 477                                   nl80211_policy);
 478                 if (err)
 479                         goto out_unlock;
 480
 481                 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk),
 482                                                    nl80211_fam.attrbuf);
 483                 if (IS_ERR(*wdev)) {
 484                         err = PTR_ERR(*wdev);
 485                         goto out_unlock;
 486                 }
 487                 *rdev = wiphy_to_dev((*wdev)->wiphy);
 488                 /* 0 is the first index - add 1 to parse only once */
 489                 cb->args[0] = (*rdev)->wiphy_idx + 1;
 490                 cb->args[1] = (*wdev)->identifier;
 491         } else {
 492                 /* subtract the 1 again here */
 493                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
 494                 struct wireless_dev *tmp;
 495
 496                 if (!wiphy) {
 497                         err = -ENODEV;
 498                         goto out_unlock;
 499                 }
 500                 *rdev = wiphy_to_dev(wiphy);
 501                 *wdev = NULL;
 502
 503                 list_for_each_entry(tmp, &(*rdev)->wdev_list, list) {
 504                         if (tmp->identifier == cb->args[1]) {
 505                                 *wdev = tmp;
 506                                 break;
 507                         }
 508                 }
 509
 510                 if (!*wdev) {
 511                         err = -ENODEV;
 512                         goto out_unlock;
 513                 }
 514         }
 515
 516         return 0;
 517  out_unlock:
 518         rtnl_unlock();
 519         return err;
 520 }
 521
 522 static void nl80211_finish_wdev_dump(struct cfg80211_registered_device *rdev)
 523 {
 524         rtnl_unlock();
 525 }
 526
 527 /* IE validation */
 528 static bool is_valid_ie_attr(const struct nlattr *attr)
 529 {
 530         const u8 *pos;
 531         int len;
 532
 533         if (!attr)
 534                 return true;
 535
 536         pos = nla_data(attr);
 537         len = nla_len(attr);
 538
 539         while (len) {
 540                 u8 elemlen;
 541
 542                 if (len < 2)
 543                         return false;
 544                 len -= 2;
 545
 546                 elemlen = pos[1];
 547                 if (elemlen > len)
 548                         return false;
 549
 550                 len -= elemlen;
 551                 pos += 2 + elemlen;
 552         }
 553
 554         return true;
 555 }
 556
 557 /* message building helper */
 558 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
 559                                    int flags, u8 cmd)
 560 {
 561         /* since there is no private header just add the generic one */
 562         return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
 563 }
 564
 565 static int nl80211_msg_put_channel(struct sk_buff *msg,
 566                                    struct ieee80211_channel *chan,
 567                                    bool large)
 568 {
 569         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
 570                         chan->center_freq))
 571                 goto nla_put_failure;
 572
 573         if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
 574             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
 575                 goto nla_put_failure;
 576         if (chan->flags & IEEE80211_CHAN_NO_IR) {
 577                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
 578                         goto nla_put_failure;
 579                 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
 580                         goto nla_put_failure;
 581         }
 582         if (chan->flags & IEEE80211_CHAN_RADAR) {
 583                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
 584                         goto nla_put_failure;
 585                 if (large) {
 586                         u32 time;
 587
 588                         time = elapsed_jiffies_msecs(chan->dfs_state_entered);
 589
 590                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
 591                                         chan->dfs_state))
 592                                 goto nla_put_failure;
 593                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
 594                                         time))
 595                                 goto nla_put_failure;
 596                         if (nla_put_u32(msg,
 597                                         NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
 598                                         chan->dfs_cac_ms))
 599                                 goto nla_put_failure;
 600                 }
 601         }
 602
 603         if (large) {
 604                 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
 605                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
 606                         goto nla_put_failure;
 607                 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
 608                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
 609                         goto nla_put_failure;
 610                 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
 611                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
 612                         goto nla_put_failure;
 613                 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
 614                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
 615                         goto nla_put_failure;
 616         }
 617
 618         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
 619                         DBM_TO_MBM(chan->max_power)))
 620                 goto nla_put_failure;
 621
 622         return 0;
 623
 624  nla_put_failure:
 625         return -ENOBUFS;
 626 }
 627
 628 /* netlink command implementations */
 629
 630 struct key_parse {
 631         struct key_params p;
 632         int idx;
 633         int type;
 634         bool def, defmgmt;
 635         bool def_uni, def_multi;
 636 };
 637
 638 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
 639 {
 640         struct nlattr *tb[NL80211_KEY_MAX + 1];
 641         int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
 642                                    nl80211_key_policy);
 643         if (err)
 644                 return err;
 645
 646         k->def = !!tb[NL80211_KEY_DEFAULT];
 647         k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
 648
 649         if (k->def) {
 650                 k->def_uni = true;
 651                 k->def_multi = true;
 652         }
 653         if (k->defmgmt)
 654                 k->def_multi = true;
 655
 656         if (tb[NL80211_KEY_IDX])
 657                 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
 658
 659         if (tb[NL80211_KEY_DATA]) {
 660                 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
 661                 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
 662         }
 663
 664         if (tb[NL80211_KEY_SEQ]) {
 665                 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
 666                 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
 667         }
 668
 669         if (tb[NL80211_KEY_CIPHER])
 670                 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
 671
 672         if (tb[NL80211_KEY_TYPE]) {
 673                 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
 674                 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
 675                         return -EINVAL;
 676         }
 677
 678         if (tb[NL80211_KEY_DEFAULT_TYPES]) {
 679                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
 680                 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
 681                                        tb[NL80211_KEY_DEFAULT_TYPES],
 682                                        nl80211_key_default_policy);
 683                 if (err)
 684                         return err;
 685
 686                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
 687                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
 688         }
 689
 690         return 0;
 691 }
 692
 693 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
 694 {
 695         if (info->attrs[NL80211_ATTR_KEY_DATA]) {
 696                 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
 697                 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
 698         }
 699
 700         if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
 701                 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
 702                 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
 703         }
 704
 705         if (info->attrs[NL80211_ATTR_KEY_IDX])
 706                 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
 707
 708         if (info->attrs[NL80211_ATTR_KEY_CIPHER])
 709                 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
 710
 711         k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
 712         k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
 713
 714         if (k->def) {
 715                 k->def_uni = true;
 716                 k->def_multi = true;
 717         }
 718         if (k->defmgmt)
 719                 k->def_multi = true;
 720
 721         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
 722                 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
 723                 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
 724                         return -EINVAL;
 725         }
 726
 727         if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
 728                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
 729                 int err = nla_parse_nested(
 730                                 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
 731                                 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
 732                                 nl80211_key_default_policy);
 733                 if (err)
 734                         return err;
 735
 736                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
 737                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
 738         }
 739
 740         return 0;
 741 }
 742
 743 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
 744 {
 745         int err;
 746
 747         memset(k, 0, sizeof(*k));
 748         k->idx = -1;
 749         k->type = -1;
 750
 751         if (info->attrs[NL80211_ATTR_KEY])
 752                 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
 753         else
 754                 err = nl80211_parse_key_old(info, k);
 755
 756         if (err)
 757                 return err;
 758
 759         if (k->def && k->defmgmt)
 760                 return -EINVAL;
 761
 762         if (k->defmgmt) {
 763                 if (k->def_uni || !k->def_multi)
 764                         return -EINVAL;
 765         }
 766
 767         if (k->idx != -1) {
 768                 if (k->defmgmt) {
 769                         if (k->idx < 4 || k->idx > 5)
 770                                 return -EINVAL;
 771                 } else if (k->def) {
 772                         if (k->idx < 0 || k->idx > 3)
 773                                 return -EINVAL;
 774                 } else {
 775                         if (k->idx < 0 || k->idx > 5)
 776                                 return -EINVAL;
 777                 }
 778         }
 779
 780         return 0;
 781 }
 782
 783 static struct cfg80211_cached_keys *
 784 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
 785                        struct nlattr *keys, bool *no_ht)
 786 {
 787         struct key_parse parse;
 788         struct nlattr *key;
 789         struct cfg80211_cached_keys *result;
 790         int rem, err, def = 0;
 791
 792         result = kzalloc(sizeof(*result), GFP_KERNEL);
 793         if (!result)
 794                 return ERR_PTR(-ENOMEM);
 795
 796         result->def = -1;
 797         result->defmgmt = -1;
 798
 799         nla_for_each_nested(key, keys, rem) {
 800                 memset(&parse, 0, sizeof(parse));
 801                 parse.idx = -1;
 802
 803                 err = nl80211_parse_key_new(key, &parse);
 804                 if (err)
 805                         goto error;
 806                 err = -EINVAL;
 807                 if (!parse.p.key)
 808                         goto error;
 809                 if (parse.idx < 0 || parse.idx > 4)
 810                         goto error;
 811                 if (parse.def) {
 812                         if (def)
 813                                 goto error;
 814                         def = 1;
 815                         result->def = parse.idx;
 816                         if (!parse.def_uni || !parse.def_multi)
 817                                 goto error;
 818                 } else if (parse.defmgmt)
 819                         goto error;
 820                 err = cfg80211_validate_key_settings(rdev, &parse.p,
 821                                                      parse.idx, false, NULL);
 822                 if (err)
 823                         goto error;
 824                 result->params[parse.idx].cipher = parse.p.cipher;
 825                 result->params[parse.idx].key_len = parse.p.key_len;
 826                 result->params[parse.idx].key = result->data[parse.idx];
 827                 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
 828
 829                 if (parse.p.cipher == WLAN_CIPHER_SUITE_WEP40 ||
 830                     parse.p.cipher == WLAN_CIPHER_SUITE_WEP104) {
 831                         if (no_ht)
 832                                 *no_ht = true;
 833                 }
 834         }
 835
 836         return result;
 837  error:
 838         kfree(result);
 839         return ERR_PTR(err);
 840 }
 841
 842 static int nl80211_key_allowed(struct wireless_dev *wdev)
 843 {
 844         ASSERT_WDEV_LOCK(wdev);
 845
 846         switch (wdev->iftype) {
 847         case NL80211_IFTYPE_AP:
 848         case NL80211_IFTYPE_AP_VLAN:
 849         case NL80211_IFTYPE_P2P_GO:
 850         case NL80211_IFTYPE_MESH_POINT:
 851                 break;
 852         case NL80211_IFTYPE_ADHOC:
 853         case NL80211_IFTYPE_STATION:
 854         case NL80211_IFTYPE_P2P_CLIENT:
 855                 if (!wdev->current_bss)
 856                         return -ENOLINK;
 857                 break;
 858         default:
 859                 return -EINVAL;
 860         }
 861
 862         return 0;
 863 }
 864
 865 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
 866                                                         struct nlattr *tb)
 867 {
 868         struct ieee80211_channel *chan;
 869
 870         if (tb == NULL)
 871                 return NULL;
 872         chan = ieee80211_get_channel(wiphy, nla_get_u32(tb));
 873         if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
 874                 return NULL;
 875         return chan;
 876 }
 877
 878 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
 879 {
 880         struct nlattr *nl_modes = nla_nest_start(msg, attr);
 881         int i;
 882
 883         if (!nl_modes)
 884                 goto nla_put_failure;
 885
 886         i = 0;
 887         while (ifmodes) {
 888                 if ((ifmodes & 1) && nla_put_flag(msg, i))
 889                         goto nla_put_failure;
 890                 ifmodes >>= 1;
 891                 i++;
 892         }
 893
 894         nla_nest_end(msg, nl_modes);
 895         return 0;
 896
 897 nla_put_failure:
 898         return -ENOBUFS;
 899 }
 900
 901 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
 902                                           struct sk_buff *msg,
 903                                           bool large)
 904 {
 905         struct nlattr *nl_combis;
 906         int i, j;
 907
 908         nl_combis = nla_nest_start(msg,
 909                                 NL80211_ATTR_INTERFACE_COMBINATIONS);
 910         if (!nl_combis)
 911                 goto nla_put_failure;
 912
 913         for (i = 0; i < wiphy->n_iface_combinations; i++) {
 914                 const struct ieee80211_iface_combination *c;
 915                 struct nlattr *nl_combi, *nl_limits;
 916
 917                 c = &wiphy->iface_combinations[i];
 918
 919                 nl_combi = nla_nest_start(msg, i + 1);
 920                 if (!nl_combi)
 921                         goto nla_put_failure;
 922
 923                 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
 924                 if (!nl_limits)
 925                         goto nla_put_failure;
 926
 927                 for (j = 0; j < c->n_limits; j++) {
 928                         struct nlattr *nl_limit;
 929
 930                         nl_limit = nla_nest_start(msg, j + 1);
 931                         if (!nl_limit)
 932                                 goto nla_put_failure;
 933                         if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
 934                                         c->limits[j].max))
 935                                 goto nla_put_failure;
 936                         if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
 937                                                 c->limits[j].types))
 938                                 goto nla_put_failure;
 939                         nla_nest_end(msg, nl_limit);
 940                 }
 941
 942                 nla_nest_end(msg, nl_limits);
 943
 944                 if (c->beacon_int_infra_match &&
 945                     nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
 946                         goto nla_put_failure;
 947                 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
 948                                 c->num_different_channels) ||
 949                     nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
 950                                 c->max_interfaces))
 951                         goto nla_put_failure;
 952                 if (large &&
 953                     nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
 954                                 c->radar_detect_widths))
 955                         goto nla_put_failure;
 956
 957                 nla_nest_end(msg, nl_combi);
 958         }
 959
 960         nla_nest_end(msg, nl_combis);
 961
 962         return 0;
 963 nla_put_failure:
 964         return -ENOBUFS;
 965 }
 966
 967 #ifdef CONFIG_PM
 968 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
 969                                         struct sk_buff *msg)
 970 {
 971         const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
 972         struct nlattr *nl_tcp;
 973
 974         if (!tcp)
 975                 return 0;
 976
 977         nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
 978         if (!nl_tcp)
 979                 return -ENOBUFS;
 980
 981         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
 982                         tcp->data_payload_max))
 983                 return -ENOBUFS;
 984
 985         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
 986                         tcp->data_payload_max))
 987                 return -ENOBUFS;
 988
 989         if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
 990                 return -ENOBUFS;
 991
 992         if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
 993                                 sizeof(*tcp->tok), tcp->tok))
 994                 return -ENOBUFS;
 995
 996         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
 997                         tcp->data_interval_max))
 998                 return -ENOBUFS;
 999
1000         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1001                         tcp->wake_payload_max))
1002                 return -ENOBUFS;
1003
1004         nla_nest_end(msg, nl_tcp);
1005         return 0;
1006 }
1007
1008 static int nl80211_send_wowlan(struct sk_buff *msg,
1009                                struct cfg80211_registered_device *dev,
1010                                bool large)
1011 {
1012         struct nlattr *nl_wowlan;
1013
1014         if (!dev->wiphy.wowlan)
1015                 return 0;
1016
1017         nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1018         if (!nl_wowlan)
1019                 return -ENOBUFS;
1020
1021         if (((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1022              nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1023             ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1024              nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1025             ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1026              nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1027             ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1028              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1029             ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1030              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1031             ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1032              nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1033             ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1034              nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1035             ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1036              nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1037                 return -ENOBUFS;
1038
1039         if (dev->wiphy.wowlan->n_patterns) {
1040                 struct nl80211_pattern_support pat = {
1041                         .max_patterns = dev->wiphy.wowlan->n_patterns,
1042                         .min_pattern_len = dev->wiphy.wowlan->pattern_min_len,
1043                         .max_pattern_len = dev->wiphy.wowlan->pattern_max_len,
1044                         .max_pkt_offset = dev->wiphy.wowlan->max_pkt_offset,
1045                 };
1046
1047                 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1048                             sizeof(pat), &pat))
1049                         return -ENOBUFS;
1050         }
1051
1052         if (large && nl80211_send_wowlan_tcp_caps(dev, msg))
1053                 return -ENOBUFS;
1054
1055         nla_nest_end(msg, nl_wowlan);
1056
1057         return 0;
1058 }
1059 #endif
1060
1061 static int nl80211_send_coalesce(struct sk_buff *msg,
1062                                  struct cfg80211_registered_device *dev)
1063 {
1064         struct nl80211_coalesce_rule_support rule;
1065
1066         if (!dev->wiphy.coalesce)
1067                 return 0;
1068
1069         rule.max_rules = dev->wiphy.coalesce->n_rules;
1070         rule.max_delay = dev->wiphy.coalesce->max_delay;
1071         rule.pat.max_patterns = dev->wiphy.coalesce->n_patterns;
1072         rule.pat.min_pattern_len = dev->wiphy.coalesce->pattern_min_len;
1073         rule.pat.max_pattern_len = dev->wiphy.coalesce->pattern_max_len;
1074         rule.pat.max_pkt_offset = dev->wiphy.coalesce->max_pkt_offset;
1075
1076         if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1077                 return -ENOBUFS;
1078
1079         return 0;
1080 }
1081
1082 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1083                                       struct ieee80211_supported_band *sband)
1084 {
1085         struct nlattr *nl_rates, *nl_rate;
1086         struct ieee80211_rate *rate;
1087         int i;
1088
1089         /* add HT info */
1090         if (sband->ht_cap.ht_supported &&
1091             (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1092                      sizeof(sband->ht_cap.mcs),
1093                      &sband->ht_cap.mcs) ||
1094              nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1095                          sband->ht_cap.cap) ||
1096              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1097                         sband->ht_cap.ampdu_factor) ||
1098              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1099                         sband->ht_cap.ampdu_density)))
1100                 return -ENOBUFS;
1101
1102         /* add VHT info */
1103         if (sband->vht_cap.vht_supported &&
1104             (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1105                      sizeof(sband->vht_cap.vht_mcs),
1106                      &sband->vht_cap.vht_mcs) ||
1107              nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1108                          sband->vht_cap.cap)))
1109                 return -ENOBUFS;
1110
1111         /* add bitrates */
1112         nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
1113         if (!nl_rates)
1114                 return -ENOBUFS;
1115
1116         for (i = 0; i < sband->n_bitrates; i++) {
1117                 nl_rate = nla_nest_start(msg, i);
1118                 if (!nl_rate)
1119                         return -ENOBUFS;
1120
1121                 rate = &sband->bitrates[i];
1122                 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1123                                 rate->bitrate))
1124                         return -ENOBUFS;
1125                 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1126                     nla_put_flag(msg,
1127                                  NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1128                         return -ENOBUFS;
1129
1130                 nla_nest_end(msg, nl_rate);
1131         }
1132
1133         nla_nest_end(msg, nl_rates);
1134
1135         return 0;
1136 }
1137
1138 static int
1139 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1140                          const struct ieee80211_txrx_stypes *mgmt_stypes)
1141 {
1142         u16 stypes;
1143         struct nlattr *nl_ftypes, *nl_ifs;
1144         enum nl80211_iftype ift;
1145         int i;
1146
1147         if (!mgmt_stypes)
1148                 return 0;
1149
1150         nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
1151         if (!nl_ifs)
1152                 return -ENOBUFS;
1153
1154         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1155                 nl_ftypes = nla_nest_start(msg, ift);
1156                 if (!nl_ftypes)
1157                         return -ENOBUFS;
1158                 i = 0;
1159                 stypes = mgmt_stypes[ift].tx;
1160                 while (stypes) {
1161                         if ((stypes & 1) &&
1162                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1163                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1164                                 return -ENOBUFS;
1165                         stypes >>= 1;
1166                         i++;
1167                 }
1168                 nla_nest_end(msg, nl_ftypes);
1169         }
1170
1171         nla_nest_end(msg, nl_ifs);
1172
1173         nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
1174         if (!nl_ifs)
1175                 return -ENOBUFS;
1176
1177         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1178                 nl_ftypes = nla_nest_start(msg, ift);
1179                 if (!nl_ftypes)
1180                         return -ENOBUFS;
1181                 i = 0;
1182                 stypes = mgmt_stypes[ift].rx;
1183                 while (stypes) {
1184                         if ((stypes & 1) &&
1185                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1186                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1187                                 return -ENOBUFS;
1188                         stypes >>= 1;
1189                         i++;
1190                 }
1191                 nla_nest_end(msg, nl_ftypes);
1192         }
1193         nla_nest_end(msg, nl_ifs);
1194
1195         return 0;
1196 }
1197
1198 struct nl80211_dump_wiphy_state {
1199         s64 filter_wiphy;
1200         long start;
1201         long split_start, band_start, chan_start;
1202         bool split;
1203 };
1204
1205 static int nl80211_send_wiphy(struct cfg80211_registered_device *dev,
1206                               struct sk_buff *msg, u32 portid, u32 seq,
1207                               int flags, struct nl80211_dump_wiphy_state *state)
1208 {
1209         void *hdr;
1210         struct nlattr *nl_bands, *nl_band;
1211         struct nlattr *nl_freqs, *nl_freq;
1212         struct nlattr *nl_cmds;
1213         enum ieee80211_band band;
1214         struct ieee80211_channel *chan;
1215         int i;
1216         const struct ieee80211_txrx_stypes *mgmt_stypes =
1217                                 dev->wiphy.mgmt_stypes;
1218         u32 features;
1219
1220         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_WIPHY);
1221         if (!hdr)
1222                 return -ENOBUFS;
1223
1224         if (WARN_ON(!state))
1225                 return -EINVAL;
1226
1227         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, dev->wiphy_idx) ||
1228             nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
1229                            wiphy_name(&dev->wiphy)) ||
1230             nla_put_u32(msg, NL80211_ATTR_GENERATION,
1231                         cfg80211_rdev_list_generation))
1232                 goto nla_put_failure;
1233
1234         switch (state->split_start) {
1235         case 0:
1236                 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
1237                                dev->wiphy.retry_short) ||
1238                     nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
1239                                dev->wiphy.retry_long) ||
1240                     nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
1241                                 dev->wiphy.frag_threshold) ||
1242                     nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
1243                                 dev->wiphy.rts_threshold) ||
1244                     nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
1245                                dev->wiphy.coverage_class) ||
1246                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
1247                                dev->wiphy.max_scan_ssids) ||
1248                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
1249                                dev->wiphy.max_sched_scan_ssids) ||
1250                     nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
1251                                 dev->wiphy.max_scan_ie_len) ||
1252                     nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
1253                                 dev->wiphy.max_sched_scan_ie_len) ||
1254                     nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
1255                                dev->wiphy.max_match_sets))
1256                         goto nla_put_failure;
1257
1258                 if ((dev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
1259                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1260                         goto nla_put_failure;
1261                 if ((dev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
1262                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
1263                         goto nla_put_failure;
1264                 if ((dev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
1265                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
1266                         goto nla_put_failure;
1267                 if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
1268                     nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
1269                         goto nla_put_failure;
1270                 if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
1271                     nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
1272                         goto nla_put_failure;
1273                 if ((dev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
1274                     nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
1275                         goto nla_put_failure;
1276                 state->split_start++;
1277                 if (state->split)
1278                         break;
1279         case 1:
1280                 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
1281                             sizeof(u32) * dev->wiphy.n_cipher_suites,
1282                             dev->wiphy.cipher_suites))
1283                         goto nla_put_failure;
1284
1285                 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
1286                                dev->wiphy.max_num_pmkids))
1287                         goto nla_put_failure;
1288
1289                 if ((dev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
1290                     nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
1291                         goto nla_put_failure;
1292
1293                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
1294                                 dev->wiphy.available_antennas_tx) ||
1295                     nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
1296                                 dev->wiphy.available_antennas_rx))
1297                         goto nla_put_failure;
1298
1299                 if ((dev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
1300                     nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
1301                                 dev->wiphy.probe_resp_offload))
1302                         goto nla_put_failure;
1303
1304                 if ((dev->wiphy.available_antennas_tx ||
1305                      dev->wiphy.available_antennas_rx) &&
1306                     dev->ops->get_antenna) {
1307                         u32 tx_ant = 0, rx_ant = 0;
1308                         int res;
1309                         res = rdev_get_antenna(dev, &tx_ant, &rx_ant);
1310                         if (!res) {
1311                                 if (nla_put_u32(msg,
1312                                                 NL80211_ATTR_WIPHY_ANTENNA_TX,
1313                                                 tx_ant) ||
1314                                     nla_put_u32(msg,
1315                                                 NL80211_ATTR_WIPHY_ANTENNA_RX,
1316                                                 rx_ant))
1317                                         goto nla_put_failure;
1318                         }
1319                 }
1320
1321                 state->split_start++;
1322                 if (state->split)
1323                         break;
1324         case 2:
1325                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
1326                                         dev->wiphy.interface_modes))
1327                                 goto nla_put_failure;
1328                 state->split_start++;
1329                 if (state->split)
1330                         break;
1331         case 3:
1332                 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
1333                 if (!nl_bands)
1334                         goto nla_put_failure;
1335
1336                 for (band = state->band_start;
1337                      band < IEEE80211_NUM_BANDS; band++) {
1338                         struct ieee80211_supported_band *sband;
1339
1340                         sband = dev->wiphy.bands[band];
1341
1342                         if (!sband)
1343                                 continue;
1344
1345                         nl_band = nla_nest_start(msg, band);
1346                         if (!nl_band)
1347                                 goto nla_put_failure;
1348
1349                         switch (state->chan_start) {
1350                         case 0:
1351                                 if (nl80211_send_band_rateinfo(msg, sband))
1352                                         goto nla_put_failure;
1353                                 state->chan_start++;
1354                                 if (state->split)
1355                                         break;
1356                         default:
1357                                 /* add frequencies */
1358                                 nl_freqs = nla_nest_start(
1359                                         msg, NL80211_BAND_ATTR_FREQS);
1360                                 if (!nl_freqs)
1361                                         goto nla_put_failure;
1362
1363                                 for (i = state->chan_start - 1;
1364                                      i < sband->n_channels;
1365                                      i++) {
1366                                         nl_freq = nla_nest_start(msg, i);
1367                                         if (!nl_freq)
1368                                                 goto nla_put_failure;
1369
1370                                         chan = &sband->channels[i];
1371
1372                                         if (nl80211_msg_put_channel(
1373                                                         msg, chan,
1374                                                         state->split))
1375                                                 goto nla_put_failure;
1376
1377                                         nla_nest_end(msg, nl_freq);
1378                                         if (state->split)
1379                                                 break;
1380                                 }
1381                                 if (i < sband->n_channels)
1382                                         state->chan_start = i + 2;
1383                                 else
1384                                         state->chan_start = 0;
1385                                 nla_nest_end(msg, nl_freqs);
1386                         }
1387
1388                         nla_nest_end(msg, nl_band);
1389
1390                         if (state->split) {
1391                                 /* start again here */
1392                                 if (state->chan_start)
1393                                         band--;
1394                                 break;
1395                         }
1396                 }
1397                 nla_nest_end(msg, nl_bands);
1398
1399                 if (band < IEEE80211_NUM_BANDS)
1400                         state->band_start = band + 1;
1401                 else
1402                         state->band_start = 0;
1403
1404                 /* if bands & channels are done, continue outside */
1405                 if (state->band_start == 0 && state->chan_start == 0)
1406                         state->split_start++;
1407                 if (state->split)
1408                         break;
1409         case 4:
1410                 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
1411                 if (!nl_cmds)
1412                         goto nla_put_failure;
1413
1414                 i = 0;
1415 #define CMD(op, n)                                                      \
1416                  do {                                                   \
1417                         if (dev->ops->op) {                             \
1418                                 i++;                                    \
1419                                 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
1420                                         goto nla_put_failure;           \
1421                         }                                               \
1422                 } while (0)
1423
1424                 CMD(add_virtual_intf, NEW_INTERFACE);
1425                 CMD(change_virtual_intf, SET_INTERFACE);
1426                 CMD(add_key, NEW_KEY);
1427                 CMD(start_ap, START_AP);
1428                 CMD(add_station, NEW_STATION);
1429                 CMD(add_mpath, NEW_MPATH);
1430                 CMD(update_mesh_config, SET_MESH_CONFIG);
1431                 CMD(change_bss, SET_BSS);
1432                 CMD(auth, AUTHENTICATE);
1433                 CMD(assoc, ASSOCIATE);
1434                 CMD(deauth, DEAUTHENTICATE);
1435                 CMD(disassoc, DISASSOCIATE);
1436                 CMD(join_ibss, JOIN_IBSS);
1437                 CMD(join_mesh, JOIN_MESH);
1438                 CMD(set_pmksa, SET_PMKSA);
1439                 CMD(del_pmksa, DEL_PMKSA);
1440                 CMD(flush_pmksa, FLUSH_PMKSA);
1441                 if (dev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1442                         CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1443                 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1444                 CMD(mgmt_tx, FRAME);
1445                 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1446                 if (dev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1447                         i++;
1448                         if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1449                                 goto nla_put_failure;
1450                 }
1451                 if (dev->ops->set_monitor_channel || dev->ops->start_ap ||
1452                     dev->ops->join_mesh) {
1453                         i++;
1454                         if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1455                                 goto nla_put_failure;
1456                 }
1457                 CMD(set_wds_peer, SET_WDS_PEER);
1458                 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1459                         CMD(tdls_mgmt, TDLS_MGMT);
1460                         CMD(tdls_oper, TDLS_OPER);
1461                 }
1462                 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
1463                         CMD(sched_scan_start, START_SCHED_SCAN);
1464                 CMD(probe_client, PROBE_CLIENT);
1465                 CMD(set_noack_map, SET_NOACK_MAP);
1466                 if (dev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1467                         i++;
1468                         if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1469                                 goto nla_put_failure;
1470                 }
1471                 CMD(start_p2p_device, START_P2P_DEVICE);
1472                 CMD(set_mcast_rate, SET_MCAST_RATE);
1473                 if (state->split) {
1474                         CMD(crit_proto_start, CRIT_PROTOCOL_START);
1475                         CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
1476                         if (dev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
1477                                 CMD(channel_switch, CHANNEL_SWITCH);
1478                 }
1479                 CMD(set_qos_map, SET_QOS_MAP);
1480
1481 #ifdef CONFIG_NL80211_TESTMODE
1482                 CMD(testmode_cmd, TESTMODE);
1483 #endif
1484
1485 #undef CMD
1486
1487                 if (dev->ops->connect || dev->ops->auth) {
1488                         i++;
1489                         if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1490                                 goto nla_put_failure;
1491                 }
1492
1493                 if (dev->ops->disconnect || dev->ops->deauth) {
1494                         i++;
1495                         if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1496                                 goto nla_put_failure;
1497                 }
1498
1499                 nla_nest_end(msg, nl_cmds);
1500                 state->split_start++;
1501                 if (state->split)
1502                         break;
1503         case 5:
1504                 if (dev->ops->remain_on_channel &&
1505                     (dev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
1506                     nla_put_u32(msg,
1507                                 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
1508                                 dev->wiphy.max_remain_on_channel_duration))
1509                         goto nla_put_failure;
1510
1511                 if ((dev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
1512                     nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
1513                         goto nla_put_failure;
1514
1515                 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
1516                         goto nla_put_failure;
1517                 state->split_start++;
1518                 if (state->split)
1519                         break;
1520         case 6:
1521 #ifdef CONFIG_PM
1522                 if (nl80211_send_wowlan(msg, dev, state->split))
1523                         goto nla_put_failure;
1524                 state->split_start++;
1525                 if (state->split)
1526                         break;
1527 #else
1528                 state->split_start++;
1529 #endif
1530         case 7:
1531                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1532                                         dev->wiphy.software_iftypes))
1533                         goto nla_put_failure;
1534
1535                 if (nl80211_put_iface_combinations(&dev->wiphy, msg,
1536                                                    state->split))
1537                         goto nla_put_failure;
1538
1539                 state->split_start++;
1540                 if (state->split)
1541                         break;
1542         case 8:
1543                 if ((dev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
1544                     nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
1545                                 dev->wiphy.ap_sme_capa))
1546                         goto nla_put_failure;
1547
1548                 features = dev->wiphy.features;
1549                 /*
1550                  * We can only add the per-channel limit information if the
1551                  * dump is split, otherwise it makes it too big. Therefore
1552                  * only advertise it in that case.
1553                  */
1554                 if (state->split)
1555                         features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
1556                 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
1557                         goto nla_put_failure;
1558
1559                 if (dev->wiphy.ht_capa_mod_mask &&
1560                     nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1561                             sizeof(*dev->wiphy.ht_capa_mod_mask),
1562                             dev->wiphy.ht_capa_mod_mask))
1563                         goto nla_put_failure;
1564
1565                 if (dev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
1566                     dev->wiphy.max_acl_mac_addrs &&
1567                     nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
1568                                 dev->wiphy.max_acl_mac_addrs))
1569                         goto nla_put_failure;
1570
1571                 /*
1572                  * Any information below this point is only available to
1573                  * applications that can deal with it being split. This
1574                  * helps ensure that newly added capabilities don't break
1575                  * older tools by overrunning their buffers.
1576                  *
1577                  * We still increment split_start so that in the split
1578                  * case we'll continue with more data in the next round,
1579                  * but break unconditionally so unsplit data stops here.
1580                  */
1581                 state->split_start++;
1582                 break;
1583         case 9:
1584                 if (dev->wiphy.extended_capabilities &&
1585                     (nla_put(msg, NL80211_ATTR_EXT_CAPA,
1586                              dev->wiphy.extended_capabilities_len,
1587                              dev->wiphy.extended_capabilities) ||
1588                      nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1589                              dev->wiphy.extended_capabilities_len,
1590                              dev->wiphy.extended_capabilities_mask)))
1591                         goto nla_put_failure;
1592
1593                 if (dev->wiphy.vht_capa_mod_mask &&
1594                     nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
1595                             sizeof(*dev->wiphy.vht_capa_mod_mask),
1596                             dev->wiphy.vht_capa_mod_mask))
1597                         goto nla_put_failure;
1598
1599                 state->split_start++;
1600                 break;
1601         case 10:
1602                 if (nl80211_send_coalesce(msg, dev))
1603                         goto nla_put_failure;
1604
1605                 if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
1606                     (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
1607                      nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
1608                         goto nla_put_failure;
1609
1610                 if (dev->wiphy.max_ap_assoc_sta &&
1611                     nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
1612                                 dev->wiphy.max_ap_assoc_sta))
1613                         goto nla_put_failure;
1614
1615                 state->split_start++;
1616                 break;
1617         case 11:
1618                 if (dev->wiphy.n_vendor_commands) {
1619                         const struct nl80211_vendor_cmd_info *info;
1620                         struct nlattr *nested;
1621
1622                         nested = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA);
1623                         if (!nested)
1624                                 goto nla_put_failure;
1625
1626                         for (i = 0; i < dev->wiphy.n_vendor_commands; i++) {
1627                                 info = &dev->wiphy.vendor_commands[i].info;
1628                                 if (nla_put(msg, i + 1, sizeof(*info), info))
1629                                         goto nla_put_failure;
1630                         }
1631                         nla_nest_end(msg, nested);
1632                 }
1633
1634                 if (dev->wiphy.n_vendor_events) {
1635                         const struct nl80211_vendor_cmd_info *info;
1636                         struct nlattr *nested;
1637
1638                         nested = nla_nest_start(msg,
1639                                                 NL80211_ATTR_VENDOR_EVENTS);
1640                         if (!nested)
1641                                 goto nla_put_failure;
1642
1643                         for (i = 0; i < dev->wiphy.n_vendor_events; i++) {
1644                                 info = &dev->wiphy.vendor_events[i];
1645                                 if (nla_put(msg, i + 1, sizeof(*info), info))
1646                                         goto nla_put_failure;
1647                         }
1648                         nla_nest_end(msg, nested);
1649                 }
1650
1651                 /* done */
1652                 state->split_start = 0;
1653                 break;
1654         }
1655         return genlmsg_end(msg, hdr);
1656
1657  nla_put_failure:
1658         genlmsg_cancel(msg, hdr);
1659         return -EMSGSIZE;
1660 }
1661
1662 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
1663                                     struct netlink_callback *cb,
1664                                     struct nl80211_dump_wiphy_state *state)
1665 {
1666         struct nlattr **tb = nl80211_fam.attrbuf;
1667         int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
1668                               tb, nl80211_fam.maxattr, nl80211_policy);
1669         /* ignore parse errors for backward compatibility */
1670         if (ret)
1671                 return 0;
1672
1673         state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
1674         if (tb[NL80211_ATTR_WIPHY])
1675                 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
1676         if (tb[NL80211_ATTR_WDEV])
1677                 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
1678         if (tb[NL80211_ATTR_IFINDEX]) {
1679                 struct net_device *netdev;
1680                 struct cfg80211_registered_device *rdev;
1681                 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
1682
1683                 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
1684                 if (!netdev)
1685                         return -ENODEV;
1686                 if (netdev->ieee80211_ptr) {
1687                         rdev = wiphy_to_dev(
1688                                 netdev->ieee80211_ptr->wiphy);
1689                         state->filter_wiphy = rdev->wiphy_idx;
1690                 }
1691         }
1692
1693         return 0;
1694 }
1695
1696 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1697 {
1698         int idx = 0, ret;
1699         struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
1700         struct cfg80211_registered_device *dev;
1701
1702         rtnl_lock();
1703         if (!state) {
1704                 state = kzalloc(sizeof(*state), GFP_KERNEL);
1705                 if (!state) {
1706                         rtnl_unlock();
1707                         return -ENOMEM;
1708                 }
1709                 state->filter_wiphy = -1;
1710                 ret = nl80211_dump_wiphy_parse(skb, cb, state);
1711                 if (ret) {
1712                         kfree(state);
1713                         rtnl_unlock();
1714                         return ret;
1715                 }
1716                 cb->args[0] = (long)state;
1717         }
1718
1719         list_for_each_entry(dev, &cfg80211_rdev_list, list) {
1720                 if (!net_eq(wiphy_net(&dev->wiphy), sock_net(skb->sk)))
1721                         continue;
1722                 if (++idx <= state->start)
1723                         continue;
1724                 if (state->filter_wiphy != -1 &&
1725                     state->filter_wiphy != dev->wiphy_idx)
1726                         continue;
1727                 /* attempt to fit multiple wiphy data chunks into the skb */
1728                 do {
1729                         ret = nl80211_send_wiphy(dev, skb,
1730                                                  NETLINK_CB(cb->skb).portid,
1731                                                  cb->nlh->nlmsg_seq,
1732                                                  NLM_F_MULTI, state);
1733                         if (ret < 0) {
1734                                 /*
1735                                  * If sending the wiphy data didn't fit (ENOBUFS
1736                                  * or EMSGSIZE returned), this SKB is still
1737                                  * empty (so it's not too big because another
1738                                  * wiphy dataset is already in the skb) and
1739                                  * we've not tried to adjust the dump allocation
1740                                  * yet ... then adjust the alloc size to be
1741                                  * bigger, and return 1 but with the empty skb.
1742                                  * This results in an empty message being RX'ed
1743                                  * in userspace, but that is ignored.
1744                                  *
1745                                  * We can then retry with the larger buffer.
1746                                  */
1747                                 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
1748                                     !skb->len && !state->split &&
1749                                     cb->min_dump_alloc < 4096) {
1750                                         cb->min_dump_alloc = 4096;
1751                                         state->split_start = 0;
1752                                         rtnl_unlock();
1753                                         return 1;
1754                                 }
1755                                 idx--;
1756                                 break;
1757                         }
1758                 } while (state->split_start > 0);
1759                 break;
1760         }
1761         rtnl_unlock();
1762
1763         state->start = idx;
1764
1765         return skb->len;
1766 }
1767
1768 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
1769 {
1770         kfree((void *)cb->args[0]);
1771         return 0;
1772 }
1773
1774 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
1775 {
1776         struct sk_buff *msg;
1777         struct cfg80211_registered_device *dev = info->user_ptr[0];
1778         struct nl80211_dump_wiphy_state state = {};
1779
1780         msg = nlmsg_new(4096, GFP_KERNEL);
1781         if (!msg)
1782                 return -ENOMEM;
1783
1784         if (nl80211_send_wiphy(dev, msg, info->snd_portid, info->snd_seq, 0,
1785                                &state) < 0) {
1786                 nlmsg_free(msg);
1787                 return -ENOBUFS;
1788         }
1789
1790         return genlmsg_reply(msg, info);
1791 }
1792
1793 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
1794         [NL80211_TXQ_ATTR_QUEUE]                = { .type = NLA_U8 },
1795         [NL80211_TXQ_ATTR_TXOP]                 = { .type = NLA_U16 },
1796         [NL80211_TXQ_ATTR_CWMIN]                = { .type = NLA_U16 },
1797         [NL80211_TXQ_ATTR_CWMAX]                = { .type = NLA_U16 },
1798         [NL80211_TXQ_ATTR_AIFS]                 = { .type = NLA_U8 },
1799 };
1800
1801 static int parse_txq_params(struct nlattr *tb[],
1802                             struct ieee80211_txq_params *txq_params)
1803 {
1804         if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
1805             !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
1806             !tb[NL80211_TXQ_ATTR_AIFS])
1807                 return -EINVAL;
1808
1809         txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
1810         txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
1811         txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
1812         txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
1813         txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
1814
1815         if (txq_params->ac >= NL80211_NUM_ACS)
1816                 return -EINVAL;
1817
1818         return 0;
1819 }
1820
1821 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
1822 {
1823         /*
1824          * You can only set the channel explicitly for WDS interfaces,
1825          * all others have their channel managed via their respective
1826          * "establish a connection" command (connect, join, ...)
1827          *
1828          * For AP/GO and mesh mode, the channel can be set with the
1829          * channel userspace API, but is only stored and passed to the
1830          * low-level driver when the AP starts or the mesh is joined.
1831          * This is for backward compatibility, userspace can also give
1832          * the channel in the start-ap or join-mesh commands instead.
1833          *
1834          * Monitors are special as they are normally slaved to
1835          * whatever else is going on, so they have their own special
1836          * operation to set the monitor channel if possible.
1837          */
1838         return !wdev ||
1839                 wdev->iftype == NL80211_IFTYPE_AP ||
1840                 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
1841                 wdev->iftype == NL80211_IFTYPE_MONITOR ||
1842                 wdev->iftype == NL80211_IFTYPE_P2P_GO;
1843 }
1844
1845 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
1846                                  struct genl_info *info,
1847                                  struct cfg80211_chan_def *chandef)
1848 {
1849         u32 control_freq;
1850
1851         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
1852                 return -EINVAL;
1853
1854         control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
1855
1856         chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
1857         chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
1858         chandef->center_freq1 = control_freq;
1859         chandef->center_freq2 = 0;
1860
1861         /* Primary channel not allowed */
1862         if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED)
1863                 return -EINVAL;
1864
1865         if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
1866                 enum nl80211_channel_type chantype;
1867
1868                 chantype = nla_get_u32(
1869                                 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
1870
1871                 switch (chantype) {
1872                 case NL80211_CHAN_NO_HT:
1873                 case NL80211_CHAN_HT20:
1874                 case NL80211_CHAN_HT40PLUS:
1875                 case NL80211_CHAN_HT40MINUS:
1876                         cfg80211_chandef_create(chandef, chandef->chan,
1877                                                 chantype);
1878                         break;
1879                 default:
1880                         return -EINVAL;
1881                 }
1882         } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
1883                 chandef->width =
1884                         nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]);
1885                 if (info->attrs[NL80211_ATTR_CENTER_FREQ1])
1886                         chandef->center_freq1 =
1887                                 nla_get_u32(
1888                                         info->attrs[NL80211_ATTR_CENTER_FREQ1]);
1889                 if (info->attrs[NL80211_ATTR_CENTER_FREQ2])
1890                         chandef->center_freq2 =
1891                                 nla_get_u32(
1892                                         info->attrs[NL80211_ATTR_CENTER_FREQ2]);
1893         }
1894
1895         if (!cfg80211_chandef_valid(chandef))
1896                 return -EINVAL;
1897
1898         if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
1899                                      IEEE80211_CHAN_DISABLED))
1900                 return -EINVAL;
1901
1902         if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
1903              chandef->width == NL80211_CHAN_WIDTH_10) &&
1904             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ))
1905                 return -EINVAL;
1906
1907         return 0;
1908 }
1909
1910 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
1911                                  struct wireless_dev *wdev,
1912                                  struct genl_info *info)
1913 {
1914         struct cfg80211_chan_def chandef;
1915         int result;
1916         enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
1917
1918         if (wdev)
1919                 iftype = wdev->iftype;
1920
1921         if (!nl80211_can_set_dev_channel(wdev))
1922                 return -EOPNOTSUPP;
1923
1924         result = nl80211_parse_chandef(rdev, info, &chandef);
1925         if (result)
1926                 return result;
1927
1928         switch (iftype) {
1929         case NL80211_IFTYPE_AP:
1930         case NL80211_IFTYPE_P2P_GO:
1931                 if (wdev->beacon_interval) {
1932                         result = -EBUSY;
1933                         break;
1934                 }
1935                 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &chandef)) {
1936                         result = -EINVAL;
1937                         break;
1938                 }
1939                 wdev->preset_chandef = chandef;
1940                 result = 0;
1941                 break;
1942         case NL80211_IFTYPE_MESH_POINT:
1943                 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
1944                 break;
1945         case NL80211_IFTYPE_MONITOR:
1946                 result = cfg80211_set_monitor_channel(rdev, &chandef);
1947                 break;
1948         default:
1949                 result = -EINVAL;
1950         }
1951
1952         return result;
1953 }
1954
1955 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
1956 {
1957         struct cfg80211_registered_device *rdev = info->user_ptr[0];
1958         struct net_device *netdev = info->user_ptr[1];
1959
1960         return __nl80211_set_channel(rdev, netdev->ieee80211_ptr, info);
1961 }
1962
1963 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
1964 {
1965         struct cfg80211_registered_device *rdev = info->user_ptr[0];
1966         struct net_device *dev = info->user_ptr[1];
1967         struct wireless_dev *wdev = dev->ieee80211_ptr;
1968         const u8 *bssid;
1969
1970         if (!info->attrs[NL80211_ATTR_MAC])
1971                 return -EINVAL;
1972
1973         if (netif_running(dev))
1974                 return -EBUSY;
1975
1976         if (!rdev->ops->set_wds_peer)
1977                 return -EOPNOTSUPP;
1978
1979         if (wdev->iftype != NL80211_IFTYPE_WDS)
1980                 return -EOPNOTSUPP;
1981
1982         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
1983         return rdev_set_wds_peer(rdev, dev, bssid);
1984 }
1985
1986
1987 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
1988 {
1989         struct cfg80211_registered_device *rdev;
1990         struct net_device *netdev = NULL;
1991         struct wireless_dev *wdev;
1992         int result = 0, rem_txq_params = 0;
1993         struct nlattr *nl_txq_params;
1994         u32 changed;
1995         u8 retry_short = 0, retry_long = 0;
1996         u32 frag_threshold = 0, rts_threshold = 0;
1997         u8 coverage_class = 0;
1998
1999         ASSERT_RTNL();
2000
2001         /*
2002          * Try to find the wiphy and netdev. Normally this
2003          * function shouldn't need the netdev, but this is
2004          * done for backward compatibility -- previously
2005          * setting the channel was done per wiphy, but now
2006          * it is per netdev. Previous userland like hostapd
2007          * also passed a netdev to set_wiphy, so that it is
2008          * possible to let that go to the right netdev!
2009          */
2010
2011         if (info->attrs[NL80211_ATTR_IFINDEX]) {
2012                 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
2013
2014                 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
2015                 if (netdev && netdev->ieee80211_ptr)
2016                         rdev = wiphy_to_dev(netdev->ieee80211_ptr->wiphy);
2017                 else
2018                         netdev = NULL;
2019         }
2020
2021         if (!netdev) {
2022                 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
2023                                                   info->attrs);
2024                 if (IS_ERR(rdev))
2025                         return PTR_ERR(rdev);
2026                 wdev = NULL;
2027                 netdev = NULL;
2028                 result = 0;
2029         } else
2030                 wdev = netdev->ieee80211_ptr;
2031
2032         /*
2033          * end workaround code, by now the rdev is available
2034          * and locked, and wdev may or may not be NULL.
2035          */
2036
2037         if (info->attrs[NL80211_ATTR_WIPHY_NAME])
2038                 result = cfg80211_dev_rename(
2039                         rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
2040
2041         if (result)
2042                 return result;
2043
2044         if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
2045                 struct ieee80211_txq_params txq_params;
2046                 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
2047
2048                 if (!rdev->ops->set_txq_params)
2049                         return -EOPNOTSUPP;
2050
2051                 if (!netdev)
2052                         return -EINVAL;
2053
2054                 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2055                     netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2056                         return -EINVAL;
2057
2058                 if (!netif_running(netdev))
2059                         return -ENETDOWN;
2060
2061                 nla_for_each_nested(nl_txq_params,
2062                                     info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
2063                                     rem_txq_params) {
2064                         result = nla_parse(tb, NL80211_TXQ_ATTR_MAX,
2065                                            nla_data(nl_txq_params),
2066                                            nla_len(nl_txq_params),
2067                                            txq_params_policy);
2068                         if (result)
2069                                 return result;
2070                         result = parse_txq_params(tb, &txq_params);
2071                         if (result)
2072                                 return result;
2073
2074                         result = rdev_set_txq_params(rdev, netdev,
2075                                                      &txq_params);
2076                         if (result)
2077                                 return result;
2078                 }
2079         }
2080
2081         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
2082                 result = __nl80211_set_channel(rdev,
2083                                 nl80211_can_set_dev_channel(wdev) ? wdev : NULL,
2084                                 info);
2085                 if (result)
2086                         return result;
2087         }
2088
2089         if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
2090                 struct wireless_dev *txp_wdev = wdev;
2091                 enum nl80211_tx_power_setting type;
2092                 int idx, mbm = 0;
2093
2094                 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
2095                         txp_wdev = NULL;
2096
2097                 if (!rdev->ops->set_tx_power)
2098                         return -EOPNOTSUPP;
2099
2100                 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
2101                 type = nla_get_u32(info->attrs[idx]);
2102
2103                 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
2104                     (type != NL80211_TX_POWER_AUTOMATIC))
2105                         return -EINVAL;
2106
2107                 if (type != NL80211_TX_POWER_AUTOMATIC) {
2108                         idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
2109                         mbm = nla_get_u32(info->attrs[idx]);
2110                 }
2111
2112                 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
2113                 if (result)
2114                         return result;
2115         }
2116
2117         if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
2118             info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
2119                 u32 tx_ant, rx_ant;
2120                 if ((!rdev->wiphy.available_antennas_tx &&
2121                      !rdev->wiphy.available_antennas_rx) ||
2122                     !rdev->ops->set_antenna)
2123                         return -EOPNOTSUPP;
2124
2125                 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
2126                 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
2127
2128                 /* reject antenna configurations which don't match the
2129                  * available antenna masks, except for the "all" mask */
2130                 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
2131                     (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx)))
2132                         return -EINVAL;
2133
2134                 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
2135                 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
2136
2137                 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
2138                 if (result)
2139                         return result;
2140         }
2141
2142         changed = 0;
2143
2144         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
2145                 retry_short = nla_get_u8(
2146                         info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
2147                 if (retry_short == 0)
2148                         return -EINVAL;
2149
2150                 changed |= WIPHY_PARAM_RETRY_SHORT;
2151         }
2152
2153         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
2154                 retry_long = nla_get_u8(
2155                         info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
2156                 if (retry_long == 0)
2157                         return -EINVAL;
2158
2159                 changed |= WIPHY_PARAM_RETRY_LONG;
2160         }
2161
2162         if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
2163                 frag_threshold = nla_get_u32(
2164                         info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
2165                 if (frag_threshold < 256)
2166                         return -EINVAL;
2167
2168                 if (frag_threshold != (u32) -1) {
2169                         /*
2170                          * Fragments (apart from the last one) are required to
2171                          * have even length. Make the fragmentation code
2172                          * simpler by stripping LSB should someone try to use
2173                          * odd threshold value.
2174                          */
2175                         frag_threshold &= ~0x1;
2176                 }
2177                 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
2178         }
2179
2180         if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
2181                 rts_threshold = nla_get_u32(
2182                         info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
2183                 changed |= WIPHY_PARAM_RTS_THRESHOLD;
2184         }
2185
2186         if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
2187                 coverage_class = nla_get_u8(
2188                         info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
2189                 changed |= WIPHY_PARAM_COVERAGE_CLASS;
2190         }
2191
2192         if (changed) {
2193                 u8 old_retry_short, old_retry_long;
2194                 u32 old_frag_threshold, old_rts_threshold;
2195                 u8 old_coverage_class;
2196
2197                 if (!rdev->ops->set_wiphy_params)
2198                         return -EOPNOTSUPP;
2199
2200                 old_retry_short = rdev->wiphy.retry_short;
2201                 old_retry_long = rdev->wiphy.retry_long;
2202                 old_frag_threshold = rdev->wiphy.frag_threshold;
2203                 old_rts_threshold = rdev->wiphy.rts_threshold;
2204                 old_coverage_class = rdev->wiphy.coverage_class;
2205
2206                 if (changed & WIPHY_PARAM_RETRY_SHORT)
2207                         rdev->wiphy.retry_short = retry_short;
2208                 if (changed & WIPHY_PARAM_RETRY_LONG)
2209                         rdev->wiphy.retry_long = retry_long;
2210                 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
2211                         rdev->wiphy.frag_threshold = frag_threshold;
2212                 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
2213                         rdev->wiphy.rts_threshold = rts_threshold;
2214                 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
2215                         rdev->wiphy.coverage_class = coverage_class;
2216
2217                 result = rdev_set_wiphy_params(rdev, changed);
2218                 if (result) {
2219                         rdev->wiphy.retry_short = old_retry_short;
2220                         rdev->wiphy.retry_long = old_retry_long;
2221                         rdev->wiphy.frag_threshold = old_frag_threshold;
2222                         rdev->wiphy.rts_threshold = old_rts_threshold;
2223                         rdev->wiphy.coverage_class = old_coverage_class;
2224                 }
2225         }
2226         return 0;
2227 }
2228
2229 static inline u64 wdev_id(struct wireless_dev *wdev)
2230 {
2231         return (u64)wdev->identifier |
2232                ((u64)wiphy_to_dev(wdev->wiphy)->wiphy_idx << 32);
2233 }
2234
2235 static int nl80211_send_chandef(struct sk_buff *msg,
2236                                 const struct cfg80211_chan_def *chandef)
2237 {
2238         WARN_ON(!cfg80211_chandef_valid(chandef));
2239
2240         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
2241                         chandef->chan->center_freq))
2242                 return -ENOBUFS;
2243         switch (chandef->width) {
2244         case NL80211_CHAN_WIDTH_20_NOHT:
2245         case NL80211_CHAN_WIDTH_20:
2246         case NL80211_CHAN_WIDTH_40:
2247                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2248                                 cfg80211_get_chandef_type(chandef)))
2249                         return -ENOBUFS;
2250                 break;
2251         default:
2252                 break;
2253         }
2254         if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
2255                 return -ENOBUFS;
2256         if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
2257                 return -ENOBUFS;
2258         if (chandef->center_freq2 &&
2259             nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
2260                 return -ENOBUFS;
2261         return 0;
2262 }
2263
2264 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
2265                               struct cfg80211_registered_device *rdev,
2266                               struct wireless_dev *wdev)
2267 {
2268         struct net_device *dev = wdev->netdev;
2269         void *hdr;
2270
2271         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_INTERFACE);
2272         if (!hdr)
2273                 return -1;
2274
2275         if (dev &&
2276             (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2277              nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
2278                 goto nla_put_failure;
2279
2280         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2281             nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
2282             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
2283             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
2284             nla_put_u32(msg, NL80211_ATTR_GENERATION,
2285                         rdev->devlist_generation ^
2286                         (cfg80211_rdev_list_generation << 2)))
2287                 goto nla_put_failure;
2288
2289         if (rdev->ops->get_channel) {
2290                 int ret;
2291                 struct cfg80211_chan_def chandef;
2292
2293                 ret = rdev_get_channel(rdev, wdev, &chandef);
2294                 if (ret == 0) {
2295                         if (nl80211_send_chandef(msg, &chandef))
2296                                 goto nla_put_failure;
2297                 }
2298         }
2299
2300         if (wdev->ssid_len) {
2301                 if (nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
2302                         goto nla_put_failure;
2303         }
2304
2305         return genlmsg_end(msg, hdr);
2306
2307  nla_put_failure:
2308         genlmsg_cancel(msg, hdr);
2309         return -EMSGSIZE;
2310 }
2311
2312 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
2313 {
2314         int wp_idx = 0;
2315         int if_idx = 0;
2316         int wp_start = cb->args[0];
2317         int if_start = cb->args[1];
2318         struct cfg80211_registered_device *rdev;
2319         struct wireless_dev *wdev;
2320
2321         rtnl_lock();
2322         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2323                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2324                         continue;
2325                 if (wp_idx < wp_start) {
2326                         wp_idx++;
2327                         continue;
2328                 }
2329                 if_idx = 0;
2330
2331                 list_for_each_entry(wdev, &rdev->wdev_list, list) {
2332                         if (if_idx < if_start) {
2333                                 if_idx++;
2334                                 continue;
2335                         }
2336                         if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
2337                                                cb->nlh->nlmsg_seq, NLM_F_MULTI,
2338                                                rdev, wdev) < 0) {
2339                                 goto out;
2340                         }
2341                         if_idx++;
2342                 }
2343
2344                 wp_idx++;
2345         }
2346  out:
2347         rtnl_unlock();
2348
2349         cb->args[0] = wp_idx;
2350         cb->args[1] = if_idx;
2351
2352         return skb->len;
2353 }
2354
2355 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
2356 {
2357         struct sk_buff *msg;
2358         struct cfg80211_registered_device *dev = info->user_ptr[0];
2359         struct wireless_dev *wdev = info->user_ptr[1];
2360
2361         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2362         if (!msg)
2363                 return -ENOMEM;
2364
2365         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2366                                dev, wdev) < 0) {
2367                 nlmsg_free(msg);
2368                 return -ENOBUFS;
2369         }
2370
2371         return genlmsg_reply(msg, info);
2372 }
2373
2374 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
2375         [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
2376         [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
2377         [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
2378         [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
2379         [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
2380         [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
2381 };
2382
2383 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
2384 {
2385         struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
2386         int flag;
2387
2388         *mntrflags = 0;
2389
2390         if (!nla)
2391                 return -EINVAL;
2392
2393         if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
2394                              nla, mntr_flags_policy))
2395                 return -EINVAL;
2396
2397         for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
2398                 if (flags[flag])
2399                         *mntrflags |= (1<<flag);
2400
2401         return 0;
2402 }
2403
2404 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
2405                                struct net_device *netdev, u8 use_4addr,
2406                                enum nl80211_iftype iftype)
2407 {
2408         if (!use_4addr) {
2409                 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
2410                         return -EBUSY;
2411                 return 0;
2412         }
2413
2414         switch (iftype) {
2415         case NL80211_IFTYPE_AP_VLAN:
2416                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
2417                         return 0;
2418                 break;
2419         case NL80211_IFTYPE_STATION:
2420                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
2421                         return 0;
2422                 break;
2423         default:
2424                 break;
2425         }
2426
2427         return -EOPNOTSUPP;
2428 }
2429
2430 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
2431 {
2432         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2433         struct vif_params params;
2434         int err;
2435         enum nl80211_iftype otype, ntype;
2436         struct net_device *dev = info->user_ptr[1];
2437         u32 _flags, *flags = NULL;
2438         bool change = false;
2439
2440         memset(&params, 0, sizeof(params));
2441
2442         otype = ntype = dev->ieee80211_ptr->iftype;
2443
2444         if (info->attrs[NL80211_ATTR_IFTYPE]) {
2445                 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2446                 if (otype != ntype)
2447                         change = true;
2448                 if (ntype > NL80211_IFTYPE_MAX)
2449                         return -EINVAL;
2450         }
2451
2452         if (info->attrs[NL80211_ATTR_MESH_ID]) {
2453                 struct wireless_dev *wdev = dev->ieee80211_ptr;
2454
2455                 if (ntype != NL80211_IFTYPE_MESH_POINT)
2456                         return -EINVAL;
2457                 if (netif_running(dev))
2458                         return -EBUSY;
2459
2460                 wdev_lock(wdev);
2461                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2462                              IEEE80211_MAX_MESH_ID_LEN);
2463                 wdev->mesh_id_up_len =
2464                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2465                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2466                        wdev->mesh_id_up_len);
2467                 wdev_unlock(wdev);
2468         }
2469
2470         if (info->attrs[NL80211_ATTR_4ADDR]) {
2471                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2472                 change = true;
2473                 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
2474                 if (err)
2475                         return err;
2476         } else {
2477                 params.use_4addr = -1;
2478         }
2479
2480         if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
2481                 if (ntype != NL80211_IFTYPE_MONITOR)
2482                         return -EINVAL;
2483                 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
2484                                           &_flags);
2485                 if (err)
2486                         return err;
2487
2488                 flags = &_flags;
2489                 change = true;
2490         }
2491
2492         if (flags && (*flags & MONITOR_FLAG_ACTIVE) &&
2493             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2494                 return -EOPNOTSUPP;
2495
2496         if (change)
2497                 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
2498         else
2499                 err = 0;
2500
2501         if (!err && params.use_4addr != -1)
2502                 dev->ieee80211_ptr->use_4addr = params.use_4addr;
2503
2504         return err;
2505 }
2506
2507 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
2508 {
2509         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2510         struct vif_params params;
2511         struct wireless_dev *wdev;
2512         struct sk_buff *msg;
2513         int err;
2514         enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
2515         u32 flags;
2516
2517         memset(&params, 0, sizeof(params));
2518
2519         if (!info->attrs[NL80211_ATTR_IFNAME])
2520                 return -EINVAL;
2521
2522         if (info->attrs[NL80211_ATTR_IFTYPE]) {
2523                 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2524                 if (type > NL80211_IFTYPE_MAX)
2525                         return -EINVAL;
2526         }
2527
2528         if (!rdev->ops->add_virtual_intf ||
2529             !(rdev->wiphy.interface_modes & (1 << type)))
2530                 return -EOPNOTSUPP;
2531
2532         if (type == NL80211_IFTYPE_P2P_DEVICE && info->attrs[NL80211_ATTR_MAC]) {
2533                 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
2534                            ETH_ALEN);
2535                 if (!is_valid_ether_addr(params.macaddr))
2536                         return -EADDRNOTAVAIL;
2537         }
2538
2539         if (info->attrs[NL80211_ATTR_4ADDR]) {
2540                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2541                 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
2542                 if (err)
2543                         return err;
2544         }
2545
2546         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2547         if (!msg)
2548                 return -ENOMEM;
2549
2550         err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
2551                                   info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
2552                                   &flags);
2553
2554         if (!err && (flags & MONITOR_FLAG_ACTIVE) &&
2555             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2556                 return -EOPNOTSUPP;
2557
2558         wdev = rdev_add_virtual_intf(rdev,
2559                                 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
2560                                 type, err ? NULL : &flags, &params);
2561         if (IS_ERR(wdev)) {
2562                 nlmsg_free(msg);
2563                 return PTR_ERR(wdev);
2564         }
2565
2566         switch (type) {
2567         case NL80211_IFTYPE_MESH_POINT:
2568                 if (!info->attrs[NL80211_ATTR_MESH_ID])
2569                         break;
2570                 wdev_lock(wdev);
2571                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2572                              IEEE80211_MAX_MESH_ID_LEN);
2573                 wdev->mesh_id_up_len =
2574                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2575                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2576                        wdev->mesh_id_up_len);
2577                 wdev_unlock(wdev);
2578                 break;
2579         case NL80211_IFTYPE_P2P_DEVICE:
2580                 /*
2581                  * P2P Device doesn't have a netdev, so doesn't go
2582                  * through the netdev notifier and must be added here
2583                  */
2584                 mutex_init(&wdev->mtx);
2585                 INIT_LIST_HEAD(&wdev->event_list);
2586                 spin_lock_init(&wdev->event_lock);
2587                 INIT_LIST_HEAD(&wdev->mgmt_registrations);
2588                 spin_lock_init(&wdev->mgmt_registrations_lock);
2589
2590                 wdev->identifier = ++rdev->wdev_id;
2591                 list_add_rcu(&wdev->list, &rdev->wdev_list);
2592                 rdev->devlist_generation++;
2593                 break;
2594         default:
2595                 break;
2596         }
2597
2598         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2599                                rdev, wdev) < 0) {
2600                 nlmsg_free(msg);
2601                 return -ENOBUFS;
2602         }
2603
2604         return genlmsg_reply(msg, info);
2605 }
2606
2607 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
2608 {
2609         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2610         struct wireless_dev *wdev = info->user_ptr[1];
2611
2612         if (!rdev->ops->del_virtual_intf)
2613                 return -EOPNOTSUPP;
2614
2615         /*
2616          * If we remove a wireless device without a netdev then clear
2617          * user_ptr[1] so that nl80211_post_doit won't dereference it
2618          * to check if it needs to do dev_put(). Otherwise it crashes
2619          * since the wdev has been freed, unlike with a netdev where
2620          * we need the dev_put() for the netdev to really be freed.
2621          */
2622         if (!wdev->netdev)
2623                 info->user_ptr[1] = NULL;
2624
2625         return rdev_del_virtual_intf(rdev, wdev);
2626 }
2627
2628 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
2629 {
2630         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2631         struct net_device *dev = info->user_ptr[1];
2632         u16 noack_map;
2633
2634         if (!info->attrs[NL80211_ATTR_NOACK_MAP])
2635                 return -EINVAL;
2636
2637         if (!rdev->ops->set_noack_map)
2638                 return -EOPNOTSUPP;
2639
2640         noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
2641
2642         return rdev_set_noack_map(rdev, dev, noack_map);
2643 }
2644
2645 struct get_key_cookie {
2646         struct sk_buff *msg;
2647         int error;
2648         int idx;
2649 };
2650
2651 static void get_key_callback(void *c, struct key_params *params)
2652 {
2653         struct nlattr *key;
2654         struct get_key_cookie *cookie = c;
2655
2656         if ((params->key &&
2657              nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
2658                      params->key_len, params->key)) ||
2659             (params->seq &&
2660              nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
2661                      params->seq_len, params->seq)) ||
2662             (params->cipher &&
2663              nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
2664                          params->cipher)))
2665                 goto nla_put_failure;
2666
2667         key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
2668         if (!key)
2669                 goto nla_put_failure;
2670
2671         if ((params->key &&
2672              nla_put(cookie->msg, NL80211_KEY_DATA,
2673                      params->key_len, params->key)) ||
2674             (params->seq &&
2675              nla_put(cookie->msg, NL80211_KEY_SEQ,
2676                      params->seq_len, params->seq)) ||
2677             (params->cipher &&
2678              nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
2679                          params->cipher)))
2680                 goto nla_put_failure;
2681
2682         if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx))
2683                 goto nla_put_failure;
2684
2685         nla_nest_end(cookie->msg, key);
2686
2687         return;
2688  nla_put_failure:
2689         cookie->error = 1;
2690 }
2691
2692 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
2693 {
2694         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2695         int err;
2696         struct net_device *dev = info->user_ptr[1];
2697         u8 key_idx = 0;
2698         const u8 *mac_addr = NULL;
2699         bool pairwise;
2700         struct get_key_cookie cookie = {
2701                 .error = 0,
2702         };
2703         void *hdr;
2704         struct sk_buff *msg;
2705
2706         if (info->attrs[NL80211_ATTR_KEY_IDX])
2707                 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
2708
2709         if (key_idx > 5)
2710                 return -EINVAL;
2711
2712         if (info->attrs[NL80211_ATTR_MAC])
2713                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2714
2715         pairwise = !!mac_addr;
2716         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
2717                 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
2718                 if (kt >= NUM_NL80211_KEYTYPES)
2719                         return -EINVAL;
2720                 if (kt != NL80211_KEYTYPE_GROUP &&
2721                     kt != NL80211_KEYTYPE_PAIRWISE)
2722                         return -EINVAL;
2723                 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
2724         }
2725
2726         if (!rdev->ops->get_key)
2727                 return -EOPNOTSUPP;
2728
2729         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2730         if (!msg)
2731                 return -ENOMEM;
2732
2733         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
2734                              NL80211_CMD_NEW_KEY);
2735         if (!hdr)
2736                 goto nla_put_failure;
2737
2738         cookie.msg = msg;
2739         cookie.idx = key_idx;
2740
2741         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2742             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
2743                 goto nla_put_failure;
2744         if (mac_addr &&
2745             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
2746                 goto nla_put_failure;
2747
2748         if (pairwise && mac_addr &&
2749             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2750                 return -ENOENT;
2751
2752         err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
2753                            get_key_callback);
2754
2755         if (err)
2756                 goto free_msg;
2757
2758         if (cookie.error)
2759                 goto nla_put_failure;
2760
2761         genlmsg_end(msg, hdr);
2762         return genlmsg_reply(msg, info);
2763
2764  nla_put_failure:
2765         err = -ENOBUFS;
2766  free_msg:
2767         nlmsg_free(msg);
2768         return err;
2769 }
2770
2771 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
2772 {
2773         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2774         struct key_parse key;
2775         int err;
2776         struct net_device *dev = info->user_ptr[1];
2777
2778         err = nl80211_parse_key(info, &key);
2779         if (err)
2780                 return err;
2781
2782         if (key.idx < 0)
2783                 return -EINVAL;
2784
2785         /* only support setting default key */
2786         if (!key.def && !key.defmgmt)
2787                 return -EINVAL;
2788
2789         wdev_lock(dev->ieee80211_ptr);
2790
2791         if (key.def) {
2792                 if (!rdev->ops->set_default_key) {
2793                         err = -EOPNOTSUPP;
2794                         goto out;
2795                 }
2796
2797                 err = nl80211_key_allowed(dev->ieee80211_ptr);
2798                 if (err)
2799                         goto out;
2800
2801                 err = rdev_set_default_key(rdev, dev, key.idx,
2802                                                  key.def_uni, key.def_multi);
2803
2804                 if (err)
2805                         goto out;
2806
2807 #ifdef CONFIG_CFG80211_WEXT
2808                 dev->ieee80211_ptr->wext.default_key = key.idx;
2809 #endif
2810         } else {
2811                 if (key.def_uni || !key.def_multi) {
2812                         err = -EINVAL;
2813                         goto out;
2814                 }
2815
2816                 if (!rdev->ops->set_default_mgmt_key) {
2817                         err = -EOPNOTSUPP;
2818                         goto out;
2819                 }
2820
2821                 err = nl80211_key_allowed(dev->ieee80211_ptr);
2822                 if (err)
2823                         goto out;
2824
2825                 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
2826                 if (err)
2827                         goto out;
2828
2829 #ifdef CONFIG_CFG80211_WEXT
2830                 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
2831 #endif
2832         }
2833
2834  out:
2835         wdev_unlock(dev->ieee80211_ptr);
2836
2837         return err;
2838 }
2839
2840 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
2841 {
2842         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2843         int err;
2844         struct net_device *dev = info->user_ptr[1];
2845         struct key_parse key;
2846         const u8 *mac_addr = NULL;
2847
2848         err = nl80211_parse_key(info, &key);
2849         if (err)
2850                 return err;
2851
2852         if (!key.p.key)
2853                 return -EINVAL;
2854
2855         if (info->attrs[NL80211_ATTR_MAC])
2856                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2857
2858         if (key.type == -1) {
2859                 if (mac_addr)
2860                         key.type = NL80211_KEYTYPE_PAIRWISE;
2861                 else
2862                         key.type = NL80211_KEYTYPE_GROUP;
2863         }
2864
2865         /* for now */
2866         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2867             key.type != NL80211_KEYTYPE_GROUP)
2868                 return -EINVAL;
2869
2870         if (!rdev->ops->add_key)
2871                 return -EOPNOTSUPP;
2872
2873         if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
2874                                            key.type == NL80211_KEYTYPE_PAIRWISE,
2875                                            mac_addr))
2876                 return -EINVAL;
2877
2878         wdev_lock(dev->ieee80211_ptr);
2879         err = nl80211_key_allowed(dev->ieee80211_ptr);
2880         if (!err)
2881                 err = rdev_add_key(rdev, dev, key.idx,
2882                                    key.type == NL80211_KEYTYPE_PAIRWISE,
2883                                     mac_addr, &key.p);
2884         wdev_unlock(dev->ieee80211_ptr);
2885
2886         return err;
2887 }
2888
2889 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
2890 {
2891         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2892         int err;
2893         struct net_device *dev = info->user_ptr[1];
2894         u8 *mac_addr = NULL;
2895         struct key_parse key;
2896
2897         err = nl80211_parse_key(info, &key);
2898         if (err)
2899                 return err;
2900
2901         if (info->attrs[NL80211_ATTR_MAC])
2902                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2903
2904         if (key.type == -1) {
2905                 if (mac_addr)
2906                         key.type = NL80211_KEYTYPE_PAIRWISE;
2907                 else
2908                         key.type = NL80211_KEYTYPE_GROUP;
2909         }
2910
2911         /* for now */
2912         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2913             key.type != NL80211_KEYTYPE_GROUP)
2914                 return -EINVAL;
2915
2916         if (!rdev->ops->del_key)
2917                 return -EOPNOTSUPP;
2918
2919         wdev_lock(dev->ieee80211_ptr);
2920         err = nl80211_key_allowed(dev->ieee80211_ptr);
2921
2922         if (key.type == NL80211_KEYTYPE_PAIRWISE && mac_addr &&
2923             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2924                 err = -ENOENT;
2925
2926         if (!err)
2927                 err = rdev_del_key(rdev, dev, key.idx,
2928                                    key.type == NL80211_KEYTYPE_PAIRWISE,
2929                                    mac_addr);
2930
2931 #ifdef CONFIG_CFG80211_WEXT
2932         if (!err) {
2933                 if (key.idx == dev->ieee80211_ptr->wext.default_key)
2934                         dev->ieee80211_ptr->wext.default_key = -1;
2935                 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
2936                         dev->ieee80211_ptr->wext.default_mgmt_key = -1;
2937         }
2938 #endif
2939         wdev_unlock(dev->ieee80211_ptr);
2940
2941         return err;
2942 }
2943
2944 /* This function returns an error or the number of nested attributes */
2945 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
2946 {
2947         struct nlattr *attr;
2948         int n_entries = 0, tmp;
2949
2950         nla_for_each_nested(attr, nl_attr, tmp) {
2951                 if (nla_len(attr) != ETH_ALEN)
2952                         return -EINVAL;
2953
2954                 n_entries++;
2955         }
2956
2957         return n_entries;
2958 }
2959
2960 /*
2961  * This function parses ACL information and allocates memory for ACL data.
2962  * On successful return, the calling function is responsible to free the
2963  * ACL buffer returned by this function.
2964  */
2965 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
2966                                                 struct genl_info *info)
2967 {
2968         enum nl80211_acl_policy acl_policy;
2969         struct nlattr *attr;
2970         struct cfg80211_acl_data *acl;
2971         int i = 0, n_entries, tmp;
2972
2973         if (!wiphy->max_acl_mac_addrs)
2974                 return ERR_PTR(-EOPNOTSUPP);
2975
2976         if (!info->attrs[NL80211_ATTR_ACL_POLICY])
2977                 return ERR_PTR(-EINVAL);
2978
2979         acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
2980         if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
2981             acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
2982                 return ERR_PTR(-EINVAL);
2983
2984         if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
2985                 return ERR_PTR(-EINVAL);
2986
2987         n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
2988         if (n_entries < 0)
2989                 return ERR_PTR(n_entries);
2990
2991         if (n_entries > wiphy->max_acl_mac_addrs)
2992                 return ERR_PTR(-ENOTSUPP);
2993
2994         acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries),
2995                       GFP_KERNEL);
2996         if (!acl)
2997                 return ERR_PTR(-ENOMEM);
2998
2999         nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
3000                 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
3001                 i++;
3002         }
3003
3004         acl->n_acl_entries = n_entries;
3005         acl->acl_policy = acl_policy;
3006
3007         return acl;
3008 }
3009
3010 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
3011 {
3012         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3013         struct net_device *dev = info->user_ptr[1];
3014         struct cfg80211_acl_data *acl;
3015         int err;
3016
3017         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3018             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3019                 return -EOPNOTSUPP;
3020
3021         if (!dev->ieee80211_ptr->beacon_interval)
3022                 return -EINVAL;
3023
3024         acl = parse_acl_data(&rdev->wiphy, info);
3025         if (IS_ERR(acl))
3026                 return PTR_ERR(acl);
3027
3028         err = rdev_set_mac_acl(rdev, dev, acl);
3029
3030         kfree(acl);
3031
3032         return err;
3033 }
3034
3035 static int nl80211_parse_beacon(struct nlattr *attrs[],
3036                                 struct cfg80211_beacon_data *bcn)
3037 {
3038         bool haveinfo = false;
3039
3040         if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) ||
3041             !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) ||
3042             !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
3043             !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP]))
3044                 return -EINVAL;
3045
3046         memset(bcn, 0, sizeof(*bcn));
3047
3048         if (attrs[NL80211_ATTR_BEACON_HEAD]) {
3049                 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
3050                 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
3051                 if (!bcn->head_len)
3052                         return -EINVAL;
3053                 haveinfo = true;
3054         }
3055
3056         if (attrs[NL80211_ATTR_BEACON_TAIL]) {
3057                 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
3058                 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
3059                 haveinfo = true;
3060         }
3061
3062         if (!haveinfo)
3063                 return -EINVAL;
3064
3065         if (attrs[NL80211_ATTR_IE]) {
3066                 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
3067                 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
3068         }
3069
3070         if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
3071                 bcn->proberesp_ies =
3072                         nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3073                 bcn->proberesp_ies_len =
3074                         nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3075         }
3076
3077         if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
3078                 bcn->assocresp_ies =
3079                         nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3080                 bcn->assocresp_ies_len =
3081                         nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3082         }
3083
3084         if (attrs[NL80211_ATTR_PROBE_RESP]) {
3085                 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
3086                 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
3087         }
3088
3089         return 0;
3090 }
3091
3092 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
3093                                    struct cfg80211_ap_settings *params)
3094 {
3095         struct wireless_dev *wdev;
3096         bool ret = false;
3097
3098         list_for_each_entry(wdev, &rdev->wdev_list, list) {
3099                 if (wdev->iftype != NL80211_IFTYPE_AP &&
3100                     wdev->iftype != NL80211_IFTYPE_P2P_GO)
3101                         continue;
3102
3103                 if (!wdev->preset_chandef.chan)
3104                         continue;
3105
3106                 params->chandef = wdev->preset_chandef;
3107                 ret = true;
3108                 break;
3109         }
3110
3111         return ret;
3112 }
3113
3114 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
3115                                     enum nl80211_auth_type auth_type,
3116                                     enum nl80211_commands cmd)
3117 {
3118         if (auth_type > NL80211_AUTHTYPE_MAX)
3119                 return false;
3120
3121         switch (cmd) {
3122         case NL80211_CMD_AUTHENTICATE:
3123                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
3124                     auth_type == NL80211_AUTHTYPE_SAE)
3125                         return false;
3126                 return true;
3127         case NL80211_CMD_CONNECT:
3128         case NL80211_CMD_START_AP:
3129                 /* SAE not supported yet */
3130                 if (auth_type == NL80211_AUTHTYPE_SAE)
3131                         return false;
3132                 return true;
3133         default:
3134                 return false;
3135         }
3136 }
3137
3138 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
3139 {
3140         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3141         struct net_device *dev = info->user_ptr[1];
3142         struct wireless_dev *wdev = dev->ieee80211_ptr;
3143         struct cfg80211_ap_settings params;
3144         int err;
3145         u8 radar_detect_width = 0;
3146
3147         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3148             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3149                 return -EOPNOTSUPP;
3150
3151         if (!rdev->ops->start_ap)
3152                 return -EOPNOTSUPP;
3153
3154         if (wdev->beacon_interval)
3155                 return -EALREADY;
3156
3157         memset(&params, 0, sizeof(params));
3158
3159         /* these are required for START_AP */
3160         if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
3161             !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
3162             !info->attrs[NL80211_ATTR_BEACON_HEAD])
3163                 return -EINVAL;
3164
3165         err = nl80211_parse_beacon(info->attrs, &params.beacon);
3166         if (err)
3167                 return err;
3168
3169         params.beacon_interval =
3170                 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3171         params.dtim_period =
3172                 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
3173
3174         err = cfg80211_validate_beacon_int(rdev, params.beacon_interval);
3175         if (err)
3176                 return err;
3177
3178         /*
3179          * In theory, some of these attributes should be required here
3180          * but since they were not used when the command was originally
3181          * added, keep them optional for old user space programs to let
3182          * them continue to work with drivers that do not need the
3183          * additional information -- drivers must check!
3184          */
3185         if (info->attrs[NL80211_ATTR_SSID]) {
3186                 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3187                 params.ssid_len =
3188                         nla_len(info->attrs[NL80211_ATTR_SSID]);
3189                 if (params.ssid_len == 0 ||
3190                     params.ssid_len > IEEE80211_MAX_SSID_LEN)
3191                         return -EINVAL;
3192         }
3193
3194         if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
3195                 params.hidden_ssid = nla_get_u32(
3196                         info->attrs[NL80211_ATTR_HIDDEN_SSID]);
3197                 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
3198                     params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
3199                     params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
3200                         return -EINVAL;
3201         }
3202
3203         params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
3204
3205         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
3206                 params.auth_type = nla_get_u32(
3207                         info->attrs[NL80211_ATTR_AUTH_TYPE]);
3208                 if (!nl80211_valid_auth_type(rdev, params.auth_type,
3209                                              NL80211_CMD_START_AP))
3210                         return -EINVAL;
3211         } else
3212                 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
3213
3214         err = nl80211_crypto_settings(rdev, info, &params.crypto,
3215                                       NL80211_MAX_NR_CIPHER_SUITES);
3216         if (err)
3217                 return err;
3218
3219         if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
3220                 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
3221                         return -EOPNOTSUPP;
3222                 params.inactivity_timeout = nla_get_u16(
3223                         info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
3224         }
3225
3226         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
3227                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3228                         return -EINVAL;
3229                 params.p2p_ctwindow =
3230                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
3231                 if (params.p2p_ctwindow > 127)
3232                         return -EINVAL;
3233                 if (params.p2p_ctwindow != 0 &&
3234                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
3235                         return -EINVAL;
3236         }
3237
3238         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
3239                 u8 tmp;
3240
3241                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3242                         return -EINVAL;
3243                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
3244                 if (tmp > 1)
3245                         return -EINVAL;
3246                 params.p2p_opp_ps = tmp;
3247                 if (params.p2p_opp_ps != 0 &&
3248                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
3249                         return -EINVAL;
3250         }
3251
3252         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3253                 err = nl80211_parse_chandef(rdev, info, &params.chandef);
3254                 if (err)
3255                         return err;
3256         } else if (wdev->preset_chandef.chan) {
3257                 params.chandef = wdev->preset_chandef;
3258         } else if (!nl80211_get_ap_channel(rdev, &params))
3259                 return -EINVAL;
3260
3261         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef))
3262                 return -EINVAL;
3263
3264         err = cfg80211_chandef_dfs_required(wdev->wiphy, &params.chandef);
3265         if (err < 0)
3266                 return err;
3267         if (err) {
3268                 radar_detect_width = BIT(params.chandef.width);
3269                 params.radar_required = true;
3270         }
3271
3272         err = cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype,
3273                                            params.chandef.chan,
3274                                            CHAN_MODE_SHARED,
3275                                            radar_detect_width);
3276         if (err)
3277                 return err;
3278
3279         if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
3280                 params.acl = parse_acl_data(&rdev->wiphy, info);
3281                 if (IS_ERR(params.acl))
3282                         return PTR_ERR(params.acl);
3283         }
3284
3285         wdev_lock(wdev);
3286         err = rdev_start_ap(rdev, dev, &params);
3287         if (!err) {
3288                 wdev->preset_chandef = params.chandef;
3289                 wdev->beacon_interval = params.beacon_interval;
3290                 wdev->chandef = params.chandef;
3291                 wdev->ssid_len = params.ssid_len;
3292                 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
3293         }
3294         wdev_unlock(wdev);
3295
3296         kfree(params.acl);
3297
3298         return err;
3299 }
3300
3301 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
3302 {
3303         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3304         struct net_device *dev = info->user_ptr[1];
3305         struct wireless_dev *wdev = dev->ieee80211_ptr;
3306         struct cfg80211_beacon_data params;
3307         int err;
3308
3309         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3310             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3311                 return -EOPNOTSUPP;
3312
3313         if (!rdev->ops->change_beacon)
3314                 return -EOPNOTSUPP;
3315
3316         if (!wdev->beacon_interval)
3317                 return -EINVAL;
3318
3319         err = nl80211_parse_beacon(info->attrs, &params);
3320         if (err)
3321                 return err;
3322
3323         wdev_lock(wdev);
3324         err = rdev_change_beacon(rdev, dev, &params);
3325         wdev_unlock(wdev);
3326
3327         return err;
3328 }
3329
3330 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
3331 {
3332         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3333         struct net_device *dev = info->user_ptr[1];
3334
3335         return cfg80211_stop_ap(rdev, dev, false);
3336 }
3337
3338 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
3339         [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
3340         [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
3341         [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
3342         [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
3343         [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
3344         [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
3345 };
3346
3347 static int parse_station_flags(struct genl_info *info,
3348                                enum nl80211_iftype iftype,
3349                                struct station_parameters *params)
3350 {
3351         struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
3352         struct nlattr *nla;
3353         int flag;
3354
3355         /*
3356          * Try parsing the new attribute first so userspace
3357          * can specify both for older kernels.
3358          */
3359         nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
3360         if (nla) {
3361                 struct nl80211_sta_flag_update *sta_flags;
3362
3363                 sta_flags = nla_data(nla);
3364                 params->sta_flags_mask = sta_flags->mask;
3365                 params->sta_flags_set = sta_flags->set;
3366                 params->sta_flags_set &= params->sta_flags_mask;
3367                 if ((params->sta_flags_mask |
3368                      params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
3369                         return -EINVAL;
3370                 return 0;
3371         }
3372
3373         /* if present, parse the old attribute */
3374
3375         nla = info->attrs[NL80211_ATTR_STA_FLAGS];
3376         if (!nla)
3377                 return 0;
3378
3379         if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
3380                              nla, sta_flags_policy))
3381                 return -EINVAL;
3382
3383         /*
3384          * Only allow certain flags for interface types so that
3385          * other attributes are silently ignored. Remember that
3386          * this is backward compatibility code with old userspace
3387          * and shouldn't be hit in other cases anyway.
3388          */
3389         switch (iftype) {
3390         case NL80211_IFTYPE_AP:
3391         case NL80211_IFTYPE_AP_VLAN:
3392         case NL80211_IFTYPE_P2P_GO:
3393                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3394                                          BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3395                                          BIT(NL80211_STA_FLAG_WME) |
3396                                          BIT(NL80211_STA_FLAG_MFP);
3397                 break;
3398         case NL80211_IFTYPE_P2P_CLIENT:
3399         case NL80211_IFTYPE_STATION:
3400                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3401                                          BIT(NL80211_STA_FLAG_TDLS_PEER);
3402                 break;
3403         case NL80211_IFTYPE_MESH_POINT:
3404                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3405                                          BIT(NL80211_STA_FLAG_MFP) |
3406                                          BIT(NL80211_STA_FLAG_AUTHORIZED);
3407         default:
3408                 return -EINVAL;
3409         }
3410
3411         for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
3412                 if (flags[flag]) {
3413                         params->sta_flags_set |= (1<<flag);
3414
3415                         /* no longer support new API additions in old API */
3416                         if (flag > NL80211_STA_FLAG_MAX_OLD_API)
3417                                 return -EINVAL;
3418                 }
3419         }
3420
3421         return 0;
3422 }
3423
3424 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
3425                                  int attr)
3426 {
3427         struct nlattr *rate;
3428         u32 bitrate;
3429         u16 bitrate_compat;
3430
3431         rate = nla_nest_start(msg, attr);
3432         if (!rate)
3433                 return false;
3434
3435         /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
3436         bitrate = cfg80211_calculate_bitrate(info);
3437         /* report 16-bit bitrate only if we can */
3438         bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
3439         if (bitrate > 0 &&
3440             nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
3441                 return false;
3442         if (bitrate_compat > 0 &&
3443             nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
3444                 return false;
3445
3446         if (info->flags & RATE_INFO_FLAGS_MCS) {
3447                 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
3448                         return false;
3449                 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
3450                     nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
3451                         return false;
3452                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3453                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3454                         return false;
3455         } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
3456                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
3457                         return false;
3458                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
3459                         return false;
3460                 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
3461                     nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
3462                         return false;
3463                 if (info->flags & RATE_INFO_FLAGS_80_MHZ_WIDTH &&
3464                     nla_put_flag(msg, NL80211_RATE_INFO_80_MHZ_WIDTH))
3465                         return false;
3466                 if (info->flags & RATE_INFO_FLAGS_80P80_MHZ_WIDTH &&
3467                     nla_put_flag(msg, NL80211_RATE_INFO_80P80_MHZ_WIDTH))
3468                         return false;
3469                 if (info->flags & RATE_INFO_FLAGS_160_MHZ_WIDTH &&
3470                     nla_put_flag(msg, NL80211_RATE_INFO_160_MHZ_WIDTH))
3471                         return false;
3472                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3473                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3474                         return false;
3475         }
3476
3477         nla_nest_end(msg, rate);
3478         return true;
3479 }
3480
3481 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
3482                                int id)
3483 {
3484         void *attr;
3485         int i = 0;
3486
3487         if (!mask)
3488                 return true;
3489
3490         attr = nla_nest_start(msg, id);
3491         if (!attr)
3492                 return false;
3493
3494         for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
3495                 if (!(mask & BIT(i)))
3496                         continue;
3497
3498                 if (nla_put_u8(msg, i, signal[i]))
3499                         return false;
3500         }
3501
3502         nla_nest_end(msg, attr);
3503
3504         return true;
3505 }
3506
3507 static int nl80211_send_station(struct sk_buff *msg, u32 portid, u32 seq,
3508                                 int flags,
3509                                 struct cfg80211_registered_device *rdev,
3510                                 struct net_device *dev,
3511                                 const u8 *mac_addr, struct station_info *sinfo)
3512 {
3513         void *hdr;
3514         struct nlattr *sinfoattr, *bss_param;
3515
3516         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION);
3517         if (!hdr)
3518                 return -1;
3519
3520         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3521             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
3522             nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
3523                 goto nla_put_failure;
3524
3525         sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
3526         if (!sinfoattr)
3527                 goto nla_put_failure;
3528         if ((sinfo->filled & STATION_INFO_CONNECTED_TIME) &&
3529             nla_put_u32(msg, NL80211_STA_INFO_CONNECTED_TIME,
3530                         sinfo->connected_time))
3531                 goto nla_put_failure;
3532         if ((sinfo->filled & STATION_INFO_INACTIVE_TIME) &&
3533             nla_put_u32(msg, NL80211_STA_INFO_INACTIVE_TIME,
3534                         sinfo->inactive_time))
3535                 goto nla_put_failure;
3536         if ((sinfo->filled & (STATION_INFO_RX_BYTES |
3537                               STATION_INFO_RX_BYTES64)) &&
3538             nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
3539                         (u32)sinfo->rx_bytes))
3540                 goto nla_put_failure;
3541         if ((sinfo->filled & (STATION_INFO_TX_BYTES |
3542                               STATION_INFO_TX_BYTES64)) &&
3543             nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
3544                         (u32)sinfo->tx_bytes))
3545                 goto nla_put_failure;
3546         if ((sinfo->filled & STATION_INFO_RX_BYTES64) &&
3547             nla_put_u64(msg, NL80211_STA_INFO_RX_BYTES64,
3548                         sinfo->rx_bytes))
3549                 goto nla_put_failure;
3550         if ((sinfo->filled & STATION_INFO_TX_BYTES64) &&
3551             nla_put_u64(msg, NL80211_STA_INFO_TX_BYTES64,
3552                         sinfo->tx_bytes))
3553                 goto nla_put_failure;
3554         if ((sinfo->filled & STATION_INFO_LLID) &&
3555             nla_put_u16(msg, NL80211_STA_INFO_LLID, sinfo->llid))
3556                 goto nla_put_failure;
3557         if ((sinfo->filled & STATION_INFO_PLID) &&
3558             nla_put_u16(msg, NL80211_STA_INFO_PLID, sinfo->plid))
3559                 goto nla_put_failure;
3560         if ((sinfo->filled & STATION_INFO_PLINK_STATE) &&
3561             nla_put_u8(msg, NL80211_STA_INFO_PLINK_STATE,
3562                        sinfo->plink_state))
3563                 goto nla_put_failure;
3564         switch (rdev->wiphy.signal_type) {
3565         case CFG80211_SIGNAL_TYPE_MBM:
3566                 if ((sinfo->filled & STATION_INFO_SIGNAL) &&
3567                     nla_put_u8(msg, NL80211_STA_INFO_SIGNAL,
3568                                sinfo->signal))
3569                         goto nla_put_failure;
3570                 if ((sinfo->filled & STATION_INFO_SIGNAL_AVG) &&
3571                     nla_put_u8(msg, NL80211_STA_INFO_SIGNAL_AVG,
3572                                sinfo->signal_avg))
3573                         goto nla_put_failure;
3574                 break;
3575         default:
3576                 break;
3577         }
3578         if (sinfo->filled & STATION_INFO_CHAIN_SIGNAL) {
3579                 if (!nl80211_put_signal(msg, sinfo->chains,
3580                                         sinfo->chain_signal,
3581                                         NL80211_STA_INFO_CHAIN_SIGNAL))
3582                         goto nla_put_failure;
3583         }
3584         if (sinfo->filled & STATION_INFO_CHAIN_SIGNAL_AVG) {
3585                 if (!nl80211_put_signal(msg, sinfo->chains,
3586                                         sinfo->chain_signal_avg,
3587                                         NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
3588                         goto nla_put_failure;
3589         }
3590         if (sinfo->filled & STATION_INFO_TX_BITRATE) {
3591                 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
3592                                           NL80211_STA_INFO_TX_BITRATE))
3593                         goto nla_put_failure;
3594         }
3595         if (sinfo->filled & STATION_INFO_RX_BITRATE) {
3596                 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
3597                                           NL80211_STA_INFO_RX_BITRATE))
3598                         goto nla_put_failure;
3599         }
3600         if ((sinfo->filled & STATION_INFO_RX_PACKETS) &&
3601             nla_put_u32(msg, NL80211_STA_INFO_RX_PACKETS,
3602                         sinfo->rx_packets))
3603                 goto nla_put_failure;
3604         if ((sinfo->filled & STATION_INFO_TX_PACKETS) &&
3605             nla_put_u32(msg, NL80211_STA_INFO_TX_PACKETS,
3606                         sinfo->tx_packets))
3607                 goto nla_put_failure;
3608         if ((sinfo->filled & STATION_INFO_TX_RETRIES) &&
3609             nla_put_u32(msg, NL80211_STA_INFO_TX_RETRIES,
3610                         sinfo->tx_retries))
3611                 goto nla_put_failure;
3612         if ((sinfo->filled & STATION_INFO_TX_FAILED) &&
3613             nla_put_u32(msg, NL80211_STA_INFO_TX_FAILED,
3614                         sinfo->tx_failed))
3615                 goto nla_put_failure;
3616         if ((sinfo->filled & STATION_INFO_BEACON_LOSS_COUNT) &&
3617             nla_put_u32(msg, NL80211_STA_INFO_BEACON_LOSS,
3618                         sinfo->beacon_loss_count))
3619                 goto nla_put_failure;
3620         if ((sinfo->filled & STATION_INFO_LOCAL_PM) &&
3621             nla_put_u32(msg, NL80211_STA_INFO_LOCAL_PM,
3622                         sinfo->local_pm))
3623                 goto nla_put_failure;
3624         if ((sinfo->filled & STATION_INFO_PEER_PM) &&
3625             nla_put_u32(msg, NL80211_STA_INFO_PEER_PM,
3626                         sinfo->peer_pm))
3627                 goto nla_put_failure;
3628         if ((sinfo->filled & STATION_INFO_NONPEER_PM) &&
3629             nla_put_u32(msg, NL80211_STA_INFO_NONPEER_PM,
3630                         sinfo->nonpeer_pm))
3631                 goto nla_put_failure;
3632         if (sinfo->filled & STATION_INFO_BSS_PARAM) {
3633                 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
3634                 if (!bss_param)
3635                         goto nla_put_failure;
3636
3637                 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
3638                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
3639                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
3640                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
3641                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
3642                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
3643                     nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
3644                                sinfo->bss_param.dtim_period) ||
3645                     nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
3646                                 sinfo->bss_param.beacon_interval))
3647                         goto nla_put_failure;
3648
3649                 nla_nest_end(msg, bss_param);
3650         }
3651         if ((sinfo->filled & STATION_INFO_STA_FLAGS) &&
3652             nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
3653                     sizeof(struct nl80211_sta_flag_update),
3654                     &sinfo->sta_flags))
3655                 goto nla_put_failure;
3656         if ((sinfo->filled & STATION_INFO_T_OFFSET) &&
3657                 nla_put_u64(msg, NL80211_STA_INFO_T_OFFSET,
3658                             sinfo->t_offset))
3659                 goto nla_put_failure;
3660         nla_nest_end(msg, sinfoattr);
3661
3662         if ((sinfo->filled & STATION_INFO_ASSOC_REQ_IES) &&
3663             nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
3664                     sinfo->assoc_req_ies))
3665                 goto nla_put_failure;
3666
3667         return genlmsg_end(msg, hdr);
3668
3669  nla_put_failure:
3670         genlmsg_cancel(msg, hdr);
3671         return -EMSGSIZE;
3672 }
3673
3674 static int nl80211_dump_station(struct sk_buff *skb,
3675                                 struct netlink_callback *cb)
3676 {
3677         struct station_info sinfo;
3678         struct cfg80211_registered_device *dev;
3679         struct wireless_dev *wdev;
3680         u8 mac_addr[ETH_ALEN];
3681         int sta_idx = cb->args[2];
3682         int err;
3683
3684         err = nl80211_prepare_wdev_dump(skb, cb, &dev, &wdev);
3685         if (err)
3686                 return err;
3687
3688         if (!wdev->netdev) {
3689                 err = -EINVAL;
3690                 goto out_err;
3691         }
3692
3693         if (!dev->ops->dump_station) {
3694                 err = -EOPNOTSUPP;
3695                 goto out_err;
3696         }
3697
3698         while (1) {
3699                 memset(&sinfo, 0, sizeof(sinfo));
3700                 err = rdev_dump_station(dev, wdev->netdev, sta_idx,
3701                                         mac_addr, &sinfo);
3702                 if (err == -ENOENT)
3703                         break;
3704                 if (err)
3705                         goto out_err;
3706
3707                 if (nl80211_send_station(skb,
3708                                 NETLINK_CB(cb->skb).portid,
3709                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3710                                 dev, wdev->netdev, mac_addr,
3711                                 &sinfo) < 0)
3712                         goto out;
3713
3714                 sta_idx++;
3715         }
3716
3717
3718  out:
3719         cb->args[2] = sta_idx;
3720         err = skb->len;
3721  out_err:
3722         nl80211_finish_wdev_dump(dev);
3723
3724         return err;
3725 }
3726
3727 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
3728 {
3729         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3730         struct net_device *dev = info->user_ptr[1];
3731         struct station_info sinfo;
3732         struct sk_buff *msg;
3733         u8 *mac_addr = NULL;
3734         int err;
3735
3736         memset(&sinfo, 0, sizeof(sinfo));
3737
3738         if (!info->attrs[NL80211_ATTR_MAC])
3739                 return -EINVAL;
3740
3741         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3742
3743         if (!rdev->ops->get_station)
3744                 return -EOPNOTSUPP;
3745
3746         err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
3747         if (err)
3748                 return err;
3749
3750         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3751         if (!msg)
3752                 return -ENOMEM;
3753
3754         if (nl80211_send_station(msg, info->snd_portid, info->snd_seq, 0,
3755                                  rdev, dev, mac_addr, &sinfo) < 0) {
3756                 nlmsg_free(msg);
3757                 return -ENOBUFS;
3758         }
3759
3760         return genlmsg_reply(msg, info);
3761 }
3762
3763 int cfg80211_check_station_change(struct wiphy *wiphy,
3764                                   struct station_parameters *params,
3765                                   enum cfg80211_station_type statype)
3766 {
3767         if (params->listen_interval != -1)
3768                 return -EINVAL;
3769         if (params->aid)
3770                 return -EINVAL;
3771
3772         /* When you run into this, adjust the code below for the new flag */
3773         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
3774
3775         switch (statype) {
3776         case CFG80211_STA_MESH_PEER_KERNEL:
3777         case CFG80211_STA_MESH_PEER_USER:
3778                 /*
3779                  * No ignoring the TDLS flag here -- the userspace mesh
3780                  * code doesn't have the bug of including TDLS in the
3781                  * mask everywhere.
3782                  */
3783                 if (params->sta_flags_mask &
3784                                 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3785                                   BIT(NL80211_STA_FLAG_MFP) |
3786                                   BIT(NL80211_STA_FLAG_AUTHORIZED)))
3787                         return -EINVAL;
3788                 break;
3789         case CFG80211_STA_TDLS_PEER_SETUP:
3790         case CFG80211_STA_TDLS_PEER_ACTIVE:
3791                 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3792                         return -EINVAL;
3793                 /* ignore since it can't change */
3794                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3795                 break;
3796         default:
3797                 /* disallow mesh-specific things */
3798                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
3799                         return -EINVAL;
3800                 if (params->local_pm)
3801                         return -EINVAL;
3802                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
3803                         return -EINVAL;
3804         }
3805
3806         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
3807             statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
3808                 /* TDLS can't be set, ... */
3809                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
3810                         return -EINVAL;
3811                 /*
3812                  * ... but don't bother the driver with it. This works around
3813                  * a hostapd/wpa_supplicant issue -- it always includes the
3814                  * TLDS_PEER flag in the mask even for AP mode.
3815                  */
3816                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3817         }
3818
3819         if (statype != CFG80211_STA_TDLS_PEER_SETUP) {
3820                 /* reject other things that can't change */
3821                 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
3822                         return -EINVAL;
3823                 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
3824                         return -EINVAL;
3825                 if (params->supported_rates)
3826                         return -EINVAL;
3827                 if (params->ext_capab || params->ht_capa || params->vht_capa)
3828                         return -EINVAL;
3829         }
3830
3831         if (statype != CFG80211_STA_AP_CLIENT) {
3832                 if (params->vlan)
3833                         return -EINVAL;
3834         }
3835
3836         switch (statype) {
3837         case CFG80211_STA_AP_MLME_CLIENT:
3838                 /* Use this only for authorizing/unauthorizing a station */
3839                 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
3840                         return -EOPNOTSUPP;
3841                 break;
3842         case CFG80211_STA_AP_CLIENT:
3843                 /* accept only the listed bits */
3844                 if (params->sta_flags_mask &
3845                                 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
3846                                   BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3847                                   BIT(NL80211_STA_FLAG_ASSOCIATED) |
3848                                   BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3849                                   BIT(NL80211_STA_FLAG_WME) |
3850                                   BIT(NL80211_STA_FLAG_MFP)))
3851                         return -EINVAL;
3852
3853                 /* but authenticated/associated only if driver handles it */
3854                 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
3855                     params->sta_flags_mask &
3856                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3857                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
3858                         return -EINVAL;
3859                 break;
3860         case CFG80211_STA_IBSS:
3861         case CFG80211_STA_AP_STA:
3862                 /* reject any changes other than AUTHORIZED */
3863                 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
3864                         return -EINVAL;
3865                 break;
3866         case CFG80211_STA_TDLS_PEER_SETUP:
3867                 /* reject any changes other than AUTHORIZED or WME */
3868                 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
3869                                                BIT(NL80211_STA_FLAG_WME)))
3870                         return -EINVAL;
3871                 /* force (at least) rates when authorizing */
3872                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
3873                     !params->supported_rates)
3874                         return -EINVAL;
3875                 break;
3876         case CFG80211_STA_TDLS_PEER_ACTIVE:
3877                 /* reject any changes */
3878                 return -EINVAL;
3879         case CFG80211_STA_MESH_PEER_KERNEL:
3880                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
3881                         return -EINVAL;
3882                 break;
3883         case CFG80211_STA_MESH_PEER_USER:
3884                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
3885                         return -EINVAL;
3886                 break;
3887         }
3888
3889         return 0;
3890 }
3891 EXPORT_SYMBOL(cfg80211_check_station_change);
3892
3893 /*
3894  * Get vlan interface making sure it is running and on the right wiphy.
3895  */
3896 static struct net_device *get_vlan(struct genl_info *info,
3897                                    struct cfg80211_registered_device *rdev)
3898 {
3899         struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
3900         struct net_device *v;
3901         int ret;
3902
3903         if (!vlanattr)
3904                 return NULL;
3905
3906         v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
3907         if (!v)
3908                 return ERR_PTR(-ENODEV);
3909
3910         if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
3911                 ret = -EINVAL;
3912                 goto error;
3913         }
3914
3915         if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
3916             v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3917             v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
3918                 ret = -EINVAL;
3919                 goto error;
3920         }
3921
3922         if (!netif_running(v)) {
3923                 ret = -ENETDOWN;
3924                 goto error;
3925         }
3926
3927         return v;
3928  error:
3929         dev_put(v);
3930         return ERR_PTR(ret);
3931 }
3932
3933 static const struct nla_policy
3934 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
3935         [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
3936         [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
3937 };
3938
3939 static int nl80211_parse_sta_wme(struct genl_info *info,
3940                                  struct station_parameters *params)
3941 {
3942         struct nlattr *tb[NL80211_STA_WME_MAX + 1];
3943         struct nlattr *nla;
3944         int err;
3945
3946         /* parse WME attributes if present */
3947         if (!info->attrs[NL80211_ATTR_STA_WME])
3948                 return 0;
3949
3950         nla = info->attrs[NL80211_ATTR_STA_WME];
3951         err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
3952                                nl80211_sta_wme_policy);
3953         if (err)
3954                 return err;
3955
3956         if (tb[NL80211_STA_WME_UAPSD_QUEUES])
3957                 params->uapsd_queues = nla_get_u8(
3958                         tb[NL80211_STA_WME_UAPSD_QUEUES]);
3959         if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
3960                 return -EINVAL;
3961
3962         if (tb[NL80211_STA_WME_MAX_SP])
3963                 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
3964
3965         if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
3966                 return -EINVAL;
3967
3968         params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
3969
3970         return 0;
3971 }
3972
3973 static int nl80211_parse_sta_channel_info(struct genl_info *info,
3974                                       struct station_parameters *params)
3975 {
3976         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
3977                 params->supported_channels =
3978                      nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
3979                 params->supported_channels_len =
3980                      nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
3981                 /*
3982                  * Need to include at least one (first channel, number of
3983                  * channels) tuple for each subband, and must have proper
3984                  * tuples for the rest of the data as well.
3985                  */
3986                 if (params->supported_channels_len < 2)
3987                         return -EINVAL;
3988                 if (params->supported_channels_len % 2)
3989                         return -EINVAL;
3990         }
3991
3992         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
3993                 params->supported_oper_classes =
3994                  nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
3995                 params->supported_oper_classes_len =
3996                   nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
3997                 /*
3998                  * The value of the Length field of the Supported Operating
3999                  * Classes element is between 2 and 253.
4000                  */
4001                 if (params->supported_oper_classes_len < 2 ||
4002                     params->supported_oper_classes_len > 253)
4003                         return -EINVAL;
4004         }
4005         return 0;
4006 }
4007
4008 static int nl80211_set_station_tdls(struct genl_info *info,
4009                                     struct station_parameters *params)
4010 {
4011         int err;
4012         /* Dummy STA entry gets updated once the peer capabilities are known */
4013         if (info->attrs[NL80211_ATTR_PEER_AID])
4014                 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4015         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4016                 params->ht_capa =
4017                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4018         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4019                 params->vht_capa =
4020                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4021
4022         err = nl80211_parse_sta_channel_info(info, params);
4023         if (err)
4024                 return err;
4025
4026         return nl80211_parse_sta_wme(info, params);
4027 }
4028
4029 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
4030 {
4031         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4032         struct net_device *dev = info->user_ptr[1];
4033         struct station_parameters params;
4034         u8 *mac_addr;
4035         int err;
4036
4037         memset(&params, 0, sizeof(params));
4038
4039         params.listen_interval = -1;
4040
4041         if (!rdev->ops->change_station)
4042                 return -EOPNOTSUPP;
4043
4044         if (info->attrs[NL80211_ATTR_STA_AID])
4045                 return -EINVAL;
4046
4047         if (!info->attrs[NL80211_ATTR_MAC])
4048                 return -EINVAL;
4049
4050         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4051
4052         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
4053                 params.supported_rates =
4054                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4055                 params.supported_rates_len =
4056                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4057         }
4058
4059         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4060                 params.capability =
4061                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4062                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4063         }
4064
4065         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4066                 params.ext_capab =
4067                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4068                 params.ext_capab_len =
4069                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4070         }
4071
4072         if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4073                 return -EINVAL;
4074
4075         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4076                 return -EINVAL;
4077
4078         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4079                 params.plink_action =
4080                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4081                 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4082                         return -EINVAL;
4083         }
4084
4085         if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
4086                 params.plink_state =
4087                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
4088                 if (params.plink_state >= NUM_NL80211_PLINK_STATES)
4089                         return -EINVAL;
4090                 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
4091         }
4092
4093         if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) {
4094                 enum nl80211_mesh_power_mode pm = nla_get_u32(
4095                         info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
4096
4097                 if (pm <= NL80211_MESH_POWER_UNKNOWN ||
4098                     pm > NL80211_MESH_POWER_MAX)
4099                         return -EINVAL;
4100
4101                 params.local_pm = pm;
4102         }
4103
4104         /* Include parameters for TDLS peer (will check later) */
4105         err = nl80211_set_station_tdls(info, &params);
4106         if (err)
4107                 return err;
4108
4109         params.vlan = get_vlan(info, rdev);
4110         if (IS_ERR(params.vlan))
4111                 return PTR_ERR(params.vlan);
4112
4113         switch (dev->ieee80211_ptr->iftype) {
4114         case NL80211_IFTYPE_AP:
4115         case NL80211_IFTYPE_AP_VLAN:
4116         case NL80211_IFTYPE_P2P_GO:
4117         case NL80211_IFTYPE_P2P_CLIENT:
4118         case NL80211_IFTYPE_STATION:
4119         case NL80211_IFTYPE_ADHOC:
4120         case NL80211_IFTYPE_MESH_POINT:
4121                 break;
4122         default:
4123                 err = -EOPNOTSUPP;
4124                 goto out_put_vlan;
4125         }
4126
4127         /* driver will call cfg80211_check_station_change() */
4128         err = rdev_change_station(rdev, dev, mac_addr, &params);
4129
4130  out_put_vlan:
4131         if (params.vlan)
4132                 dev_put(params.vlan);
4133
4134         return err;
4135 }
4136
4137 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
4138 {
4139         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4140         int err;
4141         struct net_device *dev = info->user_ptr[1];
4142         struct station_parameters params;
4143         u8 *mac_addr = NULL;
4144
4145         memset(&params, 0, sizeof(params));
4146
4147         if (!rdev->ops->add_station)
4148                 return -EOPNOTSUPP;
4149
4150         if (!info->attrs[NL80211_ATTR_MAC])
4151                 return -EINVAL;
4152
4153         if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4154                 return -EINVAL;
4155
4156         if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
4157                 return -EINVAL;
4158
4159         if (!info->attrs[NL80211_ATTR_STA_AID] &&
4160             !info->attrs[NL80211_ATTR_PEER_AID])
4161                 return -EINVAL;
4162
4163         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4164         params.supported_rates =
4165                 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4166         params.supported_rates_len =
4167                 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4168         params.listen_interval =
4169                 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4170
4171         if (info->attrs[NL80211_ATTR_PEER_AID])
4172                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4173         else
4174                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
4175         if (!params.aid || params.aid > IEEE80211_MAX_AID)
4176                 return -EINVAL;
4177
4178         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4179                 params.capability =
4180                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4181                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4182         }
4183
4184         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4185                 params.ext_capab =
4186                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4187                 params.ext_capab_len =
4188                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4189         }
4190
4191         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4192                 params.ht_capa =
4193                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4194
4195         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4196                 params.vht_capa =
4197                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4198
4199         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
4200                 params.opmode_notif_used = true;
4201                 params.opmode_notif =
4202                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
4203         }
4204
4205         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4206                 params.plink_action =
4207                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4208                 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4209                         return -EINVAL;
4210         }
4211
4212         err = nl80211_parse_sta_channel_info(info, &params);
4213         if (err)
4214                 return err;
4215
4216         err = nl80211_parse_sta_wme(info, &params);
4217         if (err)
4218                 return err;
4219
4220         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4221                 return -EINVAL;
4222
4223         /* When you run into this, adjust the code below for the new flag */
4224         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4225
4226         switch (dev->ieee80211_ptr->iftype) {
4227         case NL80211_IFTYPE_AP:
4228         case NL80211_IFTYPE_AP_VLAN:
4229         case NL80211_IFTYPE_P2P_GO:
4230                 /* ignore WME attributes if iface/sta is not capable */
4231                 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
4232                     !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
4233                         params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4234
4235                 /* TDLS peers cannot be added */
4236                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4237                     info->attrs[NL80211_ATTR_PEER_AID])
4238                         return -EINVAL;
4239                 /* but don't bother the driver with it */
4240                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4241
4242                 /* allow authenticated/associated only if driver handles it */
4243                 if (!(rdev->wiphy.features &
4244                                 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4245                     params.sta_flags_mask &
4246                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4247                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
4248                         return -EINVAL;
4249
4250                 /* must be last in here for error handling */
4251                 params.vlan = get_vlan(info, rdev);
4252                 if (IS_ERR(params.vlan))
4253                         return PTR_ERR(params.vlan);
4254                 break;
4255         case NL80211_IFTYPE_MESH_POINT:
4256                 /* ignore uAPSD data */
4257                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4258
4259                 /* associated is disallowed */
4260                 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
4261                         return -EINVAL;
4262                 /* TDLS peers cannot be added */
4263                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4264                     info->attrs[NL80211_ATTR_PEER_AID])
4265                         return -EINVAL;
4266                 break;
4267         case NL80211_IFTYPE_STATION:
4268         case NL80211_IFTYPE_P2P_CLIENT:
4269                 /* ignore uAPSD data */
4270                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4271
4272                 /* these are disallowed */
4273                 if (params.sta_flags_mask &
4274                                 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
4275                                  BIT(NL80211_STA_FLAG_AUTHENTICATED)))
4276                         return -EINVAL;
4277                 /* Only TDLS peers can be added */
4278                 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4279                         return -EINVAL;
4280                 /* Can only add if TDLS ... */
4281                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
4282                         return -EOPNOTSUPP;
4283                 /* ... with external setup is supported */
4284                 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
4285                         return -EOPNOTSUPP;
4286                 /*
4287                  * Older wpa_supplicant versions always mark the TDLS peer
4288                  * as authorized, but it shouldn't yet be.
4289                  */
4290                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
4291                 break;
4292         default:
4293                 return -EOPNOTSUPP;
4294         }
4295
4296         /* be aware of params.vlan when changing code here */
4297
4298         err = rdev_add_station(rdev, dev, mac_addr, &params);
4299
4300         if (params.vlan)
4301                 dev_put(params.vlan);
4302         return err;
4303 }
4304
4305 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
4306 {
4307         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4308         struct net_device *dev = info->user_ptr[1];
4309         u8 *mac_addr = NULL;
4310
4311         if (info->attrs[NL80211_ATTR_MAC])
4312                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4313
4314         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4315             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4316             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
4317             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4318                 return -EINVAL;
4319
4320         if (!rdev->ops->del_station)
4321                 return -EOPNOTSUPP;
4322
4323         return rdev_del_station(rdev, dev, mac_addr);
4324 }
4325
4326 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
4327                                 int flags, struct net_device *dev,
4328                                 u8 *dst, u8 *next_hop,
4329                                 struct mpath_info *pinfo)
4330 {
4331         void *hdr;
4332         struct nlattr *pinfoattr;
4333
4334         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION);
4335         if (!hdr)
4336                 return -1;
4337
4338         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4339             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
4340             nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
4341             nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
4342                 goto nla_put_failure;
4343
4344         pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
4345         if (!pinfoattr)
4346                 goto nla_put_failure;
4347         if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
4348             nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
4349                         pinfo->frame_qlen))
4350                 goto nla_put_failure;
4351         if (((pinfo->filled & MPATH_INFO_SN) &&
4352              nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
4353             ((pinfo->filled & MPATH_INFO_METRIC) &&
4354              nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
4355                          pinfo->metric)) ||
4356             ((pinfo->filled & MPATH_INFO_EXPTIME) &&
4357              nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
4358                          pinfo->exptime)) ||
4359             ((pinfo->filled & MPATH_INFO_FLAGS) &&
4360              nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
4361                         pinfo->flags)) ||
4362             ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
4363              nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
4364                          pinfo->discovery_timeout)) ||
4365             ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
4366              nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
4367                         pinfo->discovery_retries)))
4368                 goto nla_put_failure;
4369
4370         nla_nest_end(msg, pinfoattr);
4371
4372         return genlmsg_end(msg, hdr);
4373
4374  nla_put_failure:
4375         genlmsg_cancel(msg, hdr);
4376         return -EMSGSIZE;
4377 }
4378
4379 static int nl80211_dump_mpath(struct sk_buff *skb,
4380                               struct netlink_callback *cb)
4381 {
4382         struct mpath_info pinfo;
4383         struct cfg80211_registered_device *dev;
4384         struct wireless_dev *wdev;
4385         u8 dst[ETH_ALEN];
4386         u8 next_hop[ETH_ALEN];
4387         int path_idx = cb->args[2];
4388         int err;
4389
4390         err = nl80211_prepare_wdev_dump(skb, cb, &dev, &wdev);
4391         if (err)
4392                 return err;
4393
4394         if (!dev->ops->dump_mpath) {
4395                 err = -EOPNOTSUPP;
4396                 goto out_err;
4397         }
4398
4399         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4400                 err = -EOPNOTSUPP;
4401                 goto out_err;
4402         }
4403
4404         while (1) {
4405                 err = rdev_dump_mpath(dev, wdev->netdev, path_idx, dst,
4406                                       next_hop, &pinfo);
4407                 if (err == -ENOENT)
4408                         break;
4409                 if (err)
4410                         goto out_err;
4411
4412                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4413                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
4414                                        wdev->netdev, dst, next_hop,
4415                                        &pinfo) < 0)
4416                         goto out;
4417
4418                 path_idx++;
4419         }
4420
4421
4422  out:
4423         cb->args[2] = path_idx;
4424         err = skb->len;
4425  out_err:
4426         nl80211_finish_wdev_dump(dev);
4427         return err;
4428 }
4429
4430 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
4431 {
4432         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4433         int err;
4434         struct net_device *dev = info->user_ptr[1];
4435         struct mpath_info pinfo;
4436         struct sk_buff *msg;
4437         u8 *dst = NULL;
4438         u8 next_hop[ETH_ALEN];
4439
4440         memset(&pinfo, 0, sizeof(pinfo));
4441
4442         if (!info->attrs[NL80211_ATTR_MAC])
4443                 return -EINVAL;
4444
4445         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4446
4447         if (!rdev->ops->get_mpath)
4448                 return -EOPNOTSUPP;
4449
4450         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4451                 return -EOPNOTSUPP;
4452
4453         err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
4454         if (err)
4455                 return err;
4456
4457         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4458         if (!msg)
4459                 return -ENOMEM;
4460
4461         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4462                                  dev, dst, next_hop, &pinfo) < 0) {
4463                 nlmsg_free(msg);
4464                 return -ENOBUFS;
4465         }
4466
4467         return genlmsg_reply(msg, info);
4468 }
4469
4470 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
4471 {
4472         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4473         struct net_device *dev = info->user_ptr[1];
4474         u8 *dst = NULL;
4475         u8 *next_hop = NULL;
4476
4477         if (!info->attrs[NL80211_ATTR_MAC])
4478                 return -EINVAL;
4479
4480         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4481                 return -EINVAL;
4482
4483         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4484         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4485
4486         if (!rdev->ops->change_mpath)
4487                 return -EOPNOTSUPP;
4488
4489         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4490                 return -EOPNOTSUPP;
4491
4492         return rdev_change_mpath(rdev, dev, dst, next_hop);
4493 }
4494
4495 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
4496 {
4497         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4498         struct net_device *dev = info->user_ptr[1];
4499         u8 *dst = NULL;
4500         u8 *next_hop = NULL;
4501
4502         if (!info->attrs[NL80211_ATTR_MAC])
4503                 return -EINVAL;
4504
4505         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4506                 return -EINVAL;
4507
4508         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4509         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4510
4511         if (!rdev->ops->add_mpath)
4512                 return -EOPNOTSUPP;
4513
4514         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4515                 return -EOPNOTSUPP;
4516
4517         return rdev_add_mpath(rdev, dev, dst, next_hop);
4518 }
4519
4520 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
4521 {
4522         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4523         struct net_device *dev = info->user_ptr[1];
4524         u8 *dst = NULL;
4525
4526         if (info->attrs[NL80211_ATTR_MAC])
4527                 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4528
4529         if (!rdev->ops->del_mpath)
4530                 return -EOPNOTSUPP;
4531
4532         return rdev_del_mpath(rdev, dev, dst);
4533 }
4534
4535 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
4536 {
4537         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4538         struct net_device *dev = info->user_ptr[1];
4539         struct wireless_dev *wdev = dev->ieee80211_ptr;
4540         struct bss_parameters params;
4541         int err;
4542
4543         memset(&params, 0, sizeof(params));
4544         /* default to not changing parameters */
4545         params.use_cts_prot = -1;
4546         params.use_short_preamble = -1;
4547         params.use_short_slot_time = -1;
4548         params.ap_isolate = -1;
4549         params.ht_opmode = -1;
4550         params.p2p_ctwindow = -1;
4551         params.p2p_opp_ps = -1;
4552
4553         if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
4554                 params.use_cts_prot =
4555                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
4556         if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
4557                 params.use_short_preamble =
4558                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
4559         if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
4560                 params.use_short_slot_time =
4561                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
4562         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
4563                 params.basic_rates =
4564                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4565                 params.basic_rates_len =
4566                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4567         }
4568         if (info->attrs[NL80211_ATTR_AP_ISOLATE])
4569                 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
4570         if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
4571                 params.ht_opmode =
4572                         nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
4573
4574         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
4575                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4576                         return -EINVAL;
4577                 params.p2p_ctwindow =
4578                         nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
4579                 if (params.p2p_ctwindow < 0)
4580                         return -EINVAL;
4581                 if (params.p2p_ctwindow != 0 &&
4582                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
4583                         return -EINVAL;
4584         }
4585
4586         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
4587                 u8 tmp;
4588
4589                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4590                         return -EINVAL;
4591                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
4592                 if (tmp > 1)
4593                         return -EINVAL;
4594                 params.p2p_opp_ps = tmp;
4595                 if (params.p2p_opp_ps &&
4596                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
4597                         return -EINVAL;
4598         }
4599
4600         if (!rdev->ops->change_bss)
4601                 return -EOPNOTSUPP;
4602
4603         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4604             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4605                 return -EOPNOTSUPP;
4606
4607         wdev_lock(wdev);
4608         err = rdev_change_bss(rdev, dev, &params);
4609         wdev_unlock(wdev);
4610
4611         return err;
4612 }
4613
4614 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
4615         [NL80211_ATTR_REG_RULE_FLAGS]           = { .type = NLA_U32 },
4616         [NL80211_ATTR_FREQ_RANGE_START]         = { .type = NLA_U32 },
4617         [NL80211_ATTR_FREQ_RANGE_END]           = { .type = NLA_U32 },
4618         [NL80211_ATTR_FREQ_RANGE_MAX_BW]        = { .type = NLA_U32 },
4619         [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]  = { .type = NLA_U32 },
4620         [NL80211_ATTR_POWER_RULE_MAX_EIRP]      = { .type = NLA_U32 },
4621         [NL80211_ATTR_DFS_CAC_TIME]             = { .type = NLA_U32 },
4622 };
4623
4624 static int parse_reg_rule(struct nlattr *tb[],
4625         struct ieee80211_reg_rule *reg_rule)
4626 {
4627         struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
4628         struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
4629
4630         if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
4631                 return -EINVAL;
4632         if (!tb[NL80211_ATTR_FREQ_RANGE_START])
4633                 return -EINVAL;
4634         if (!tb[NL80211_ATTR_FREQ_RANGE_END])
4635                 return -EINVAL;
4636         if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
4637                 return -EINVAL;
4638         if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
4639                 return -EINVAL;
4640
4641         reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
4642
4643         freq_range->start_freq_khz =
4644                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
4645         freq_range->end_freq_khz =
4646                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
4647         freq_range->max_bandwidth_khz =
4648                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
4649
4650         power_rule->max_eirp =
4651                 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
4652
4653         if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
4654                 power_rule->max_antenna_gain =
4655                         nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
4656
4657         if (tb[NL80211_ATTR_DFS_CAC_TIME])
4658                 reg_rule->dfs_cac_ms =
4659                         nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
4660
4661         return 0;
4662 }
4663
4664 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
4665 {
4666         int r;
4667         char *data = NULL;
4668         enum nl80211_user_reg_hint_type user_reg_hint_type;
4669
4670         /*
4671          * You should only get this when cfg80211 hasn't yet initialized
4672          * completely when built-in to the kernel right between the time
4673          * window between nl80211_init() and regulatory_init(), if that is
4674          * even possible.
4675          */
4676         if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
4677                 return -EINPROGRESS;
4678
4679         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
4680                 return -EINVAL;
4681
4682         data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
4683
4684         if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
4685                 user_reg_hint_type =
4686                   nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
4687         else
4688                 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
4689
4690         switch (user_reg_hint_type) {
4691         case NL80211_USER_REG_HINT_USER:
4692         case NL80211_USER_REG_HINT_CELL_BASE:
4693                 break;
4694         default:
4695                 return -EINVAL;
4696         }
4697
4698         r = regulatory_hint_user(data, user_reg_hint_type);
4699
4700         return r;
4701 }
4702
4703 static int nl80211_get_mesh_config(struct sk_buff *skb,
4704                                    struct genl_info *info)
4705 {
4706         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4707         struct net_device *dev = info->user_ptr[1];
4708         struct wireless_dev *wdev = dev->ieee80211_ptr;
4709         struct mesh_config cur_params;
4710         int err = 0;
4711         void *hdr;
4712         struct nlattr *pinfoattr;
4713         struct sk_buff *msg;
4714
4715         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
4716                 return -EOPNOTSUPP;
4717
4718         if (!rdev->ops->get_mesh_config)
4719                 return -EOPNOTSUPP;
4720
4721         wdev_lock(wdev);
4722         /* If not connected, get default parameters */
4723         if (!wdev->mesh_id_len)
4724                 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
4725         else
4726                 err = rdev_get_mesh_config(rdev, dev, &cur_params);
4727         wdev_unlock(wdev);
4728
4729         if (err)
4730                 return err;
4731
4732         /* Draw up a netlink message to send back */
4733         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4734         if (!msg)
4735                 return -ENOMEM;
4736         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
4737                              NL80211_CMD_GET_MESH_CONFIG);
4738         if (!hdr)
4739                 goto out;
4740         pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
4741         if (!pinfoattr)
4742                 goto nla_put_failure;
4743         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4744             nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
4745                         cur_params.dot11MeshRetryTimeout) ||
4746             nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
4747                         cur_params.dot11MeshConfirmTimeout) ||
4748             nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
4749                         cur_params.dot11MeshHoldingTimeout) ||
4750             nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
4751                         cur_params.dot11MeshMaxPeerLinks) ||
4752             nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
4753                        cur_params.dot11MeshMaxRetries) ||
4754             nla_put_u8(msg, NL80211_MESHCONF_TTL,
4755                        cur_params.dot11MeshTTL) ||
4756             nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
4757                        cur_params.element_ttl) ||
4758             nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
4759                        cur_params.auto_open_plinks) ||
4760             nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
4761                         cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
4762             nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
4763                        cur_params.dot11MeshHWMPmaxPREQretries) ||
4764             nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
4765                         cur_params.path_refresh_time) ||
4766             nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
4767                         cur_params.min_discovery_timeout) ||
4768             nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
4769                         cur_params.dot11MeshHWMPactivePathTimeout) ||
4770             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
4771                         cur_params.dot11MeshHWMPpreqMinInterval) ||
4772             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
4773                         cur_params.dot11MeshHWMPperrMinInterval) ||
4774             nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
4775                         cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
4776             nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
4777                        cur_params.dot11MeshHWMPRootMode) ||
4778             nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
4779                         cur_params.dot11MeshHWMPRannInterval) ||
4780             nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
4781                        cur_params.dot11MeshGateAnnouncementProtocol) ||
4782             nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
4783                        cur_params.dot11MeshForwarding) ||
4784             nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
4785                         cur_params.rssi_threshold) ||
4786             nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
4787                         cur_params.ht_opmode) ||
4788             nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
4789                         cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
4790             nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
4791                         cur_params.dot11MeshHWMProotInterval) ||
4792             nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
4793                         cur_params.dot11MeshHWMPconfirmationInterval) ||
4794             nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
4795                         cur_params.power_mode) ||
4796             nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
4797                         cur_params.dot11MeshAwakeWindowDuration) ||
4798             nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
4799                         cur_params.plink_timeout))
4800                 goto nla_put_failure;
4801         nla_nest_end(msg, pinfoattr);
4802         genlmsg_end(msg, hdr);
4803         return genlmsg_reply(msg, info);
4804
4805  nla_put_failure:
4806         genlmsg_cancel(msg, hdr);
4807  out:
4808         nlmsg_free(msg);
4809         return -ENOBUFS;
4810 }
4811
4812 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
4813         [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
4814         [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
4815         [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
4816         [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
4817         [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
4818         [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
4819         [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
4820         [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
4821         [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
4822         [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
4823         [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
4824         [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
4825         [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
4826         [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
4827         [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
4828         [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
4829         [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
4830         [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
4831         [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
4832         [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
4833         [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
4834         [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
4835         [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
4836         [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
4837         [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
4838         [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 },
4839         [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
4840         [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
4841 };
4842
4843 static const struct nla_policy
4844         nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
4845         [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
4846         [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
4847         [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
4848         [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
4849         [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
4850         [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
4851         [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
4852                                     .len = IEEE80211_MAX_DATA_LEN },
4853         [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
4854 };
4855
4856 static int nl80211_parse_mesh_config(struct genl_info *info,
4857                                      struct mesh_config *cfg,
4858                                      u32 *mask_out)
4859 {
4860         struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
4861         u32 mask = 0;
4862
4863 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \
4864 do {                                                                        \
4865         if (tb[attr]) {                                                     \
4866                 if (fn(tb[attr]) < min || fn(tb[attr]) > max)               \
4867                         return -EINVAL;                                     \
4868                 cfg->param = fn(tb[attr]);                                  \
4869                 mask |= (1 << (attr - 1));                                  \
4870         }                                                                   \
4871 } while (0)
4872
4873
4874         if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
4875                 return -EINVAL;
4876         if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
4877                              info->attrs[NL80211_ATTR_MESH_CONFIG],
4878                              nl80211_meshconf_params_policy))
4879                 return -EINVAL;
4880
4881         /* This makes sure that there aren't more than 32 mesh config
4882          * parameters (otherwise our bitfield scheme would not work.) */
4883         BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
4884
4885         /* Fill in the params struct */
4886         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255,
4887                                   mask, NL80211_MESHCONF_RETRY_TIMEOUT,
4888                                   nla_get_u16);
4889         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255,
4890                                   mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
4891                                   nla_get_u16);
4892         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255,
4893                                   mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
4894                                   nla_get_u16);
4895         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255,
4896                                   mask, NL80211_MESHCONF_MAX_PEER_LINKS,
4897                                   nla_get_u16);
4898         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16,
4899                                   mask, NL80211_MESHCONF_MAX_RETRIES,
4900                                   nla_get_u8);
4901         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255,
4902                                   mask, NL80211_MESHCONF_TTL, nla_get_u8);
4903         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255,
4904                                   mask, NL80211_MESHCONF_ELEMENT_TTL,
4905                                   nla_get_u8);
4906         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1,
4907                                   mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
4908                                   nla_get_u8);
4909         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
4910                                   1, 255, mask,
4911                                   NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
4912                                   nla_get_u32);
4913         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255,
4914                                   mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
4915                                   nla_get_u8);
4916         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535,
4917                                   mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
4918                                   nla_get_u32);
4919         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535,
4920                                   mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
4921                                   nla_get_u16);
4922         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
4923                                   1, 65535, mask,
4924                                   NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
4925                                   nla_get_u32);
4926         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
4927                                   1, 65535, mask,
4928                                   NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
4929                                   nla_get_u16);
4930         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
4931                                   1, 65535, mask,
4932                                   NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
4933                                   nla_get_u16);
4934         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
4935                                   dot11MeshHWMPnetDiameterTraversalTime,
4936                                   1, 65535, mask,
4937                                   NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
4938                                   nla_get_u16);
4939         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4,
4940                                   mask, NL80211_MESHCONF_HWMP_ROOTMODE,
4941                                   nla_get_u8);
4942         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535,
4943                                   mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
4944                                   nla_get_u16);
4945         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
4946                                   dot11MeshGateAnnouncementProtocol, 0, 1,
4947                                   mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
4948                                   nla_get_u8);
4949         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1,
4950                                   mask, NL80211_MESHCONF_FORWARDING,
4951                                   nla_get_u8);
4952         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, -255, 0,
4953                                   mask, NL80211_MESHCONF_RSSI_THRESHOLD,
4954                                   nla_get_s32);
4955         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, ht_opmode, 0, 16,
4956                                   mask, NL80211_MESHCONF_HT_OPMODE,
4957                                   nla_get_u16);
4958         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
4959                                   1, 65535, mask,
4960                                   NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
4961                                   nla_get_u32);
4962         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535,
4963                                   mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
4964                                   nla_get_u16);
4965         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
4966                                   dot11MeshHWMPconfirmationInterval,
4967                                   1, 65535, mask,
4968                                   NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
4969                                   nla_get_u16);
4970         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode,
4971                                   NL80211_MESH_POWER_ACTIVE,
4972                                   NL80211_MESH_POWER_MAX,
4973                                   mask, NL80211_MESHCONF_POWER_MODE,
4974                                   nla_get_u32);
4975         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration,
4976                                   0, 65535, mask,
4977                                   NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
4978         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 1, 0xffffffff,
4979                                   mask, NL80211_MESHCONF_PLINK_TIMEOUT,
4980                                   nla_get_u32);
4981         if (mask_out)
4982                 *mask_out = mask;
4983
4984         return 0;
4985
4986 #undef FILL_IN_MESH_PARAM_IF_SET
4987 }
4988
4989 static int nl80211_parse_mesh_setup(struct genl_info *info,
4990                                      struct mesh_setup *setup)
4991 {
4992         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4993         struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
4994
4995         if (!info->attrs[NL80211_ATTR_MESH_SETUP])
4996                 return -EINVAL;
4997         if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
4998                              info->attrs[NL80211_ATTR_MESH_SETUP],
4999                              nl80211_mesh_setup_params_policy))
5000                 return -EINVAL;
5001
5002         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
5003                 setup->sync_method =
5004                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
5005                  IEEE80211_SYNC_METHOD_VENDOR :
5006                  IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
5007
5008         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
5009                 setup->path_sel_proto =
5010                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
5011                  IEEE80211_PATH_PROTOCOL_VENDOR :
5012                  IEEE80211_PATH_PROTOCOL_HWMP;
5013
5014         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
5015                 setup->path_metric =
5016                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
5017                  IEEE80211_PATH_METRIC_VENDOR :
5018                  IEEE80211_PATH_METRIC_AIRTIME;
5019
5020
5021         if (tb[NL80211_MESH_SETUP_IE]) {
5022                 struct nlattr *ieattr =
5023                         tb[NL80211_MESH_SETUP_IE];
5024                 if (!is_valid_ie_attr(ieattr))
5025                         return -EINVAL;
5026                 setup->ie = nla_data(ieattr);
5027                 setup->ie_len = nla_len(ieattr);
5028         }
5029         if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
5030             !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
5031                 return -EINVAL;
5032         setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
5033         setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
5034         setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
5035         if (setup->is_secure)
5036                 setup->user_mpm = true;
5037
5038         if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
5039                 if (!setup->user_mpm)
5040                         return -EINVAL;
5041                 setup->auth_id =
5042                         nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
5043         }
5044
5045         return 0;
5046 }
5047
5048 static int nl80211_update_mesh_config(struct sk_buff *skb,
5049                                       struct genl_info *info)
5050 {
5051         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5052         struct net_device *dev = info->user_ptr[1];
5053         struct wireless_dev *wdev = dev->ieee80211_ptr;
5054         struct mesh_config cfg;
5055         u32 mask;
5056         int err;
5057
5058         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
5059                 return -EOPNOTSUPP;
5060
5061         if (!rdev->ops->update_mesh_config)
5062                 return -EOPNOTSUPP;
5063
5064         err = nl80211_parse_mesh_config(info, &cfg, &mask);
5065         if (err)
5066                 return err;
5067
5068         wdev_lock(wdev);
5069         if (!wdev->mesh_id_len)
5070                 err = -ENOLINK;
5071
5072         if (!err)
5073                 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
5074
5075         wdev_unlock(wdev);
5076
5077         return err;
5078 }
5079
5080 static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
5081 {
5082         const struct ieee80211_regdomain *regdom;
5083         struct sk_buff *msg;
5084         void *hdr = NULL;
5085         struct nlattr *nl_reg_rules;
5086         unsigned int i;
5087
5088         if (!cfg80211_regdomain)
5089                 return -EINVAL;
5090
5091         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5092         if (!msg)
5093                 return -ENOBUFS;
5094
5095         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5096                              NL80211_CMD_GET_REG);
5097         if (!hdr)
5098                 goto put_failure;
5099
5100         if (reg_last_request_cell_base() &&
5101             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
5102                         NL80211_USER_REG_HINT_CELL_BASE))
5103                 goto nla_put_failure;
5104
5105         rcu_read_lock();
5106         regdom = rcu_dereference(cfg80211_regdomain);
5107
5108         if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
5109             (regdom->dfs_region &&
5110              nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
5111                 goto nla_put_failure_rcu;
5112
5113         nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
5114         if (!nl_reg_rules)
5115                 goto nla_put_failure_rcu;
5116
5117         for (i = 0; i < regdom->n_reg_rules; i++) {
5118                 struct nlattr *nl_reg_rule;
5119                 const struct ieee80211_reg_rule *reg_rule;
5120                 const struct ieee80211_freq_range *freq_range;
5121                 const struct ieee80211_power_rule *power_rule;
5122                 unsigned int max_bandwidth_khz;
5123
5124                 reg_rule = &regdom->reg_rules[i];
5125                 freq_range = &reg_rule->freq_range;
5126                 power_rule = &reg_rule->power_rule;
5127
5128                 nl_reg_rule = nla_nest_start(msg, i);
5129                 if (!nl_reg_rule)
5130                         goto nla_put_failure_rcu;
5131
5132                 max_bandwidth_khz = freq_range->max_bandwidth_khz;
5133                 if (!max_bandwidth_khz)
5134                         max_bandwidth_khz = reg_get_max_bandwidth(regdom,
5135                                                                   reg_rule);
5136
5137                 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
5138                                 reg_rule->flags) ||
5139                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
5140                                 freq_range->start_freq_khz) ||
5141                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
5142                                 freq_range->end_freq_khz) ||
5143                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
5144                                 max_bandwidth_khz) ||
5145                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
5146                                 power_rule->max_antenna_gain) ||
5147                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
5148                                 power_rule->max_eirp) ||
5149                     nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
5150                                 reg_rule->dfs_cac_ms))
5151                         goto nla_put_failure_rcu;
5152
5153                 nla_nest_end(msg, nl_reg_rule);
5154         }
5155         rcu_read_unlock();
5156
5157         nla_nest_end(msg, nl_reg_rules);
5158
5159         genlmsg_end(msg, hdr);
5160         return genlmsg_reply(msg, info);
5161
5162 nla_put_failure_rcu:
5163         rcu_read_unlock();
5164 nla_put_failure:
5165         genlmsg_cancel(msg, hdr);
5166 put_failure:
5167         nlmsg_free(msg);
5168         return -EMSGSIZE;
5169 }
5170
5171 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
5172 {
5173         struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
5174         struct nlattr *nl_reg_rule;
5175         char *alpha2 = NULL;
5176         int rem_reg_rules = 0, r = 0;
5177         u32 num_rules = 0, rule_idx = 0, size_of_regd;
5178         enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
5179         struct ieee80211_regdomain *rd = NULL;
5180
5181         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
5182                 return -EINVAL;
5183
5184         if (!info->attrs[NL80211_ATTR_REG_RULES])
5185                 return -EINVAL;
5186
5187         alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5188
5189         if (info->attrs[NL80211_ATTR_DFS_REGION])
5190                 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
5191
5192         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5193                             rem_reg_rules) {
5194                 num_rules++;
5195                 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
5196                         return -EINVAL;
5197         }
5198
5199         if (!reg_is_valid_request(alpha2))
5200                 return -EINVAL;
5201
5202         size_of_regd = sizeof(struct ieee80211_regdomain) +
5203                        num_rules * sizeof(struct ieee80211_reg_rule);
5204
5205         rd = kzalloc(size_of_regd, GFP_KERNEL);
5206         if (!rd)
5207                 return -ENOMEM;
5208
5209         rd->n_reg_rules = num_rules;
5210         rd->alpha2[0] = alpha2[0];
5211         rd->alpha2[1] = alpha2[1];
5212
5213         /*
5214          * Disable DFS master mode if the DFS region was
5215          * not supported or known on this kernel.
5216          */
5217         if (reg_supported_dfs_region(dfs_region))
5218                 rd->dfs_region = dfs_region;
5219
5220         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5221                             rem_reg_rules) {
5222                 r = nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
5223                               nla_data(nl_reg_rule), nla_len(nl_reg_rule),
5224                               reg_rule_policy);
5225                 if (r)
5226                         goto bad_reg;
5227                 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
5228                 if (r)
5229                         goto bad_reg;
5230
5231                 rule_idx++;
5232
5233                 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
5234                         r = -EINVAL;
5235                         goto bad_reg;
5236                 }
5237         }
5238
5239         r = set_regdom(rd);
5240         /* set_regdom took ownership */
5241         rd = NULL;
5242
5243  bad_reg:
5244         kfree(rd);
5245         return r;
5246 }
5247
5248 static int validate_scan_freqs(struct nlattr *freqs)
5249 {
5250         struct nlattr *attr1, *attr2;
5251         int n_channels = 0, tmp1, tmp2;
5252
5253         nla_for_each_nested(attr1, freqs, tmp1) {
5254                 n_channels++;
5255                 /*
5256                  * Some hardware has a limited channel list for
5257                  * scanning, and it is pretty much nonsensical
5258                  * to scan for a channel twice, so disallow that
5259                  * and don't require drivers to check that the
5260                  * channel list they get isn't longer than what
5261                  * they can scan, as long as they can scan all
5262                  * the channels they registered at once.
5263                  */
5264                 nla_for_each_nested(attr2, freqs, tmp2)
5265                         if (attr1 != attr2 &&
5266                             nla_get_u32(attr1) == nla_get_u32(attr2))
5267                                 return 0;
5268         }
5269
5270         return n_channels;
5271 }
5272
5273 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
5274 {
5275         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5276         struct wireless_dev *wdev = info->user_ptr[1];
5277         struct cfg80211_scan_request *request;
5278         struct nlattr *attr;
5279         struct wiphy *wiphy;
5280         int err, tmp, n_ssids = 0, n_channels, i;
5281         size_t ie_len;
5282
5283         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5284                 return -EINVAL;
5285
5286         wiphy = &rdev->wiphy;
5287
5288         if (!rdev->ops->scan)
5289                 return -EOPNOTSUPP;
5290
5291         if (rdev->scan_req || rdev->scan_msg) {
5292                 err = -EBUSY;
5293                 goto unlock;
5294         }
5295
5296         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5297                 n_channels = validate_scan_freqs(
5298                                 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5299                 if (!n_channels) {
5300                         err = -EINVAL;
5301                         goto unlock;
5302                 }
5303         } else {
5304                 n_channels = ieee80211_get_num_supported_channels(wiphy);
5305         }
5306
5307         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5308                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
5309                         n_ssids++;
5310
5311         if (n_ssids > wiphy->max_scan_ssids) {
5312                 err = -EINVAL;
5313                 goto unlock;
5314         }
5315
5316         if (info->attrs[NL80211_ATTR_IE])
5317                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5318         else
5319                 ie_len = 0;
5320
5321         if (ie_len > wiphy->max_scan_ie_len) {
5322                 err = -EINVAL;
5323                 goto unlock;
5324         }
5325
5326         request = kzalloc(sizeof(*request)
5327                         + sizeof(*request->ssids) * n_ssids
5328                         + sizeof(*request->channels) * n_channels
5329                         + ie_len, GFP_KERNEL);
5330         if (!request) {
5331                 err = -ENOMEM;
5332                 goto unlock;
5333         }
5334
5335         if (n_ssids)
5336                 request->ssids = (void *)&request->channels[n_channels];
5337         request->n_ssids = n_ssids;
5338         if (ie_len) {
5339                 if (request->ssids)
5340                         request->ie = (void *)(request->ssids + n_ssids);
5341                 else
5342                         request->ie = (void *)(request->channels + n_channels);
5343         }
5344
5345         i = 0;
5346         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5347                 /* user specified, bail out if channel not found */
5348                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
5349                         struct ieee80211_channel *chan;
5350
5351                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5352
5353                         if (!chan) {
5354                                 err = -EINVAL;
5355                                 goto out_free;
5356                         }
5357
5358                         /* ignore disabled channels */
5359                         if (chan->flags & IEEE80211_CHAN_DISABLED)
5360                                 continue;
5361
5362                         request->channels[i] = chan;
5363                         i++;
5364                 }
5365         } else {
5366                 enum ieee80211_band band;
5367
5368                 /* all channels */
5369                 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5370                         int j;
5371                         if (!wiphy->bands[band])
5372                                 continue;
5373                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5374                                 struct ieee80211_channel *chan;
5375
5376                                 chan = &wiphy->bands[band]->channels[j];
5377
5378                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
5379                                         continue;
5380
5381                                 request->channels[i] = chan;
5382                                 i++;
5383                         }
5384                 }
5385         }
5386
5387         if (!i) {
5388                 err = -EINVAL;
5389                 goto out_free;
5390         }
5391
5392         request->n_channels = i;
5393
5394         i = 0;
5395         if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
5396                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
5397                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5398                                 err = -EINVAL;
5399                                 goto out_free;
5400                         }
5401                         request->ssids[i].ssid_len = nla_len(attr);
5402                         memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
5403                         i++;
5404                 }
5405         }
5406
5407         if (info->attrs[NL80211_ATTR_IE]) {
5408                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5409                 memcpy((void *)request->ie,
5410                        nla_data(info->attrs[NL80211_ATTR_IE]),
5411                        request->ie_len);
5412         }
5413
5414         for (i = 0; i < IEEE80211_NUM_BANDS; i++)
5415                 if (wiphy->bands[i])
5416                         request->rates[i] =
5417                                 (1 << wiphy->bands[i]->n_bitrates) - 1;
5418
5419         if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
5420                 nla_for_each_nested(attr,
5421                                     info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
5422                                     tmp) {
5423                         enum ieee80211_band band = nla_type(attr);
5424
5425                         if (band < 0 || band >= IEEE80211_NUM_BANDS) {
5426                                 err = -EINVAL;
5427                                 goto out_free;
5428                         }
5429
5430                         if (!wiphy->bands[band])
5431                                 continue;
5432
5433                         err = ieee80211_get_ratemask(wiphy->bands[band],
5434                                                      nla_data(attr),
5435                                                      nla_len(attr),
5436                                                      &request->rates[band]);
5437                         if (err)
5438                                 goto out_free;
5439                 }
5440         }
5441
5442         if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
5443                 request->flags = nla_get_u32(
5444                         info->attrs[NL80211_ATTR_SCAN_FLAGS]);
5445                 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
5446                     !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
5447                         err = -EOPNOTSUPP;
5448                         goto out_free;
5449                 }
5450         }
5451
5452         request->no_cck =
5453                 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
5454
5455         request->wdev = wdev;
5456         request->wiphy = &rdev->wiphy;
5457         request->scan_start = jiffies;
5458
5459         rdev->scan_req = request;
5460         err = rdev_scan(rdev, request);
5461
5462         if (!err) {
5463                 nl80211_send_scan_start(rdev, wdev);
5464                 if (wdev->netdev)
5465                         dev_hold(wdev->netdev);
5466         } else {
5467  out_free:
5468                 rdev->scan_req = NULL;
5469                 kfree(request);
5470         }
5471
5472  unlock:
5473         return err;
5474 }
5475
5476 static int nl80211_start_sched_scan(struct sk_buff *skb,
5477                                     struct genl_info *info)
5478 {
5479         struct cfg80211_sched_scan_request *request;
5480         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5481         struct net_device *dev = info->user_ptr[1];
5482         struct nlattr *attr;
5483         struct wiphy *wiphy;
5484         int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i;
5485         u32 interval;
5486         enum ieee80211_band band;
5487         size_t ie_len;
5488         struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
5489         s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
5490
5491         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
5492             !rdev->ops->sched_scan_start)
5493                 return -EOPNOTSUPP;
5494
5495         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5496                 return -EINVAL;
5497
5498         if (!info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
5499                 return -EINVAL;
5500
5501         interval = nla_get_u32(info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
5502         if (interval == 0)
5503                 return -EINVAL;
5504
5505         wiphy = &rdev->wiphy;
5506
5507         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5508                 n_channels = validate_scan_freqs(
5509                                 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5510                 if (!n_channels)
5511                         return -EINVAL;
5512         } else {
5513                 n_channels = ieee80211_get_num_supported_channels(wiphy);
5514         }
5515
5516         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5517                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
5518                                     tmp)
5519                         n_ssids++;
5520
5521         if (n_ssids > wiphy->max_sched_scan_ssids)
5522                 return -EINVAL;
5523
5524         /*
5525          * First, count the number of 'real' matchsets. Due to an issue with
5526          * the old implementation, matchsets containing only the RSSI attribute
5527          * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
5528          * RSSI for all matchsets, rather than their own matchset for reporting
5529          * all APs with a strong RSSI. This is needed to be compatible with
5530          * older userspace that treated a matchset with only the RSSI as the
5531          * global RSSI for all other matchsets - if there are other matchsets.
5532          */
5533         if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
5534                 nla_for_each_nested(attr,
5535                                     info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
5536                                     tmp) {
5537                         struct nlattr *rssi;
5538
5539                         err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
5540                                         nla_data(attr), nla_len(attr),
5541                                         nl80211_match_policy);
5542                         if (err)
5543                                 return err;
5544                         /* add other standalone attributes here */
5545                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID]) {
5546                                 n_match_sets++;
5547                                 continue;
5548                         }
5549                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
5550                         if (rssi)
5551                                 default_match_rssi = nla_get_s32(rssi);
5552                 }
5553         }
5554
5555         /* However, if there's no other matchset, add the RSSI one */
5556         if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
5557                 n_match_sets = 1;
5558
5559         if (n_match_sets > wiphy->max_match_sets)
5560                 return -EINVAL;
5561
5562         if (info->attrs[NL80211_ATTR_IE])
5563                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5564         else
5565                 ie_len = 0;
5566
5567         if (ie_len > wiphy->max_sched_scan_ie_len)
5568                 return -EINVAL;
5569
5570         if (rdev->sched_scan_req) {
5571                 err = -EINPROGRESS;
5572                 goto out;
5573         }
5574
5575         request = kzalloc(sizeof(*request)
5576                         + sizeof(*request->ssids) * n_ssids
5577                         + sizeof(*request->match_sets) * n_match_sets
5578                         + sizeof(*request->channels) * n_channels
5579                         + ie_len, GFP_KERNEL);
5580         if (!request) {
5581                 err = -ENOMEM;
5582                 goto out;
5583         }
5584
5585         if (n_ssids)
5586                 request->ssids = (void *)&request->channels[n_channels];
5587         request->n_ssids = n_ssids;
5588         if (ie_len) {
5589                 if (request->ssids)
5590                         request->ie = (void *)(request->ssids + n_ssids);
5591                 else
5592                         request->ie = (void *)(request->channels + n_channels);
5593         }
5594
5595         if (n_match_sets) {
5596                 if (request->ie)
5597                         request->match_sets = (void *)(request->ie + ie_len);
5598                 else if (request->ssids)
5599                         request->match_sets =
5600                                 (void *)(request->ssids + n_ssids);
5601                 else
5602                         request->match_sets =
5603                                 (void *)(request->channels + n_channels);
5604         }
5605         request->n_match_sets = n_match_sets;
5606
5607         i = 0;
5608         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5609                 /* user specified, bail out if channel not found */
5610                 nla_for_each_nested(attr,
5611                                     info->attrs[NL80211_ATTR_SCAN_FREQUENCIES],
5612                                     tmp) {
5613                         struct ieee80211_channel *chan;
5614
5615                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5616
5617                         if (!chan) {
5618                                 err = -EINVAL;
5619                                 goto out_free;
5620                         }
5621
5622                         /* ignore disabled channels */
5623                         if (chan->flags & IEEE80211_CHAN_DISABLED)
5624                                 continue;
5625
5626                         request->channels[i] = chan;
5627                         i++;
5628                 }
5629         } else {
5630                 /* all channels */
5631                 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5632                         int j;
5633                         if (!wiphy->bands[band])
5634                                 continue;
5635                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5636                                 struct ieee80211_channel *chan;
5637
5638                                 chan = &wiphy->bands[band]->channels[j];
5639
5640                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
5641                                         continue;
5642
5643                                 request->channels[i] = chan;
5644                                 i++;
5645                         }
5646                 }
5647         }
5648
5649         if (!i) {
5650                 err = -EINVAL;
5651                 goto out_free;
5652         }
5653
5654         request->n_channels = i;
5655
5656         i = 0;
5657         if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
5658                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
5659                                     tmp) {
5660                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5661                                 err = -EINVAL;
5662                                 goto out_free;
5663                         }
5664                         request->ssids[i].ssid_len = nla_len(attr);
5665                         memcpy(request->ssids[i].ssid, nla_data(attr),
5666                                nla_len(attr));
5667                         i++;
5668                 }
5669         }
5670
5671         i = 0;
5672         if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
5673                 nla_for_each_nested(attr,
5674                                     info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
5675                                     tmp) {
5676                         struct nlattr *ssid, *rssi;
5677
5678                         err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
5679                                         nla_data(attr), nla_len(attr),
5680                                         nl80211_match_policy);
5681                         if (err)
5682                                 goto out_free;
5683                         ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
5684                         if (ssid) {
5685                                 if (WARN_ON(i >= n_match_sets)) {
5686                                         /* this indicates a programming error,
5687                                          * the loop above should have verified
5688                                          * things properly
5689                                          */
5690                                         err = -EINVAL;
5691                                         goto out_free;
5692                                 }
5693
5694                                 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
5695                                         err = -EINVAL;
5696                                         goto out_free;
5697                                 }
5698                                 memcpy(request->match_sets[i].ssid.ssid,
5699                                        nla_data(ssid), nla_len(ssid));
5700                                 request->match_sets[i].ssid.ssid_len =
5701                                         nla_len(ssid);
5702                                 /* special attribute - old implemenation w/a */
5703                                 request->match_sets[i].rssi_thold =
5704                                         default_match_rssi;
5705                                 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
5706                                 if (rssi)
5707                                         request->match_sets[i].rssi_thold =
5708                                                 nla_get_s32(rssi);
5709                         }
5710                         i++;
5711                 }
5712
5713                 /* there was no other matchset, so the RSSI one is alone */
5714                 if (i == 0)
5715                         request->match_sets[0].rssi_thold = default_match_rssi;
5716
5717                 request->min_rssi_thold = INT_MAX;
5718                 for (i = 0; i < n_match_sets; i++)
5719                         request->min_rssi_thold =
5720                                 min(request->match_sets[i].rssi_thold,
5721                                     request->min_rssi_thold);
5722         } else {
5723                 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
5724         }
5725
5726         if (ie_len) {
5727                 request->ie_len = ie_len;
5728                 memcpy((void *)request->ie,
5729                        nla_data(info->attrs[NL80211_ATTR_IE]),
5730                        request->ie_len);
5731         }
5732
5733         if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
5734                 request->flags = nla_get_u32(
5735                         info->attrs[NL80211_ATTR_SCAN_FLAGS]);
5736                 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
5737                     !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
5738                         err = -EOPNOTSUPP;
5739                         goto out_free;
5740                 }
5741         }
5742
5743         request->dev = dev;
5744         request->wiphy = &rdev->wiphy;
5745         request->interval = interval;
5746         request->scan_start = jiffies;
5747
5748         err = rdev_sched_scan_start(rdev, dev, request);
5749         if (!err) {
5750                 rdev->sched_scan_req = request;
5751                 nl80211_send_sched_scan(rdev, dev,
5752                                         NL80211_CMD_START_SCHED_SCAN);
5753                 goto out;
5754         }
5755
5756 out_free:
5757         kfree(request);
5758 out:
5759         return err;
5760 }
5761
5762 static int nl80211_stop_sched_scan(struct sk_buff *skb,
5763                                    struct genl_info *info)
5764 {
5765         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5766
5767         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
5768             !rdev->ops->sched_scan_stop)
5769                 return -EOPNOTSUPP;
5770
5771         return __cfg80211_stop_sched_scan(rdev, false);
5772 }
5773
5774 static int nl80211_start_radar_detection(struct sk_buff *skb,
5775                                          struct genl_info *info)
5776 {
5777         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5778         struct net_device *dev = info->user_ptr[1];
5779         struct wireless_dev *wdev = dev->ieee80211_ptr;
5780         struct cfg80211_chan_def chandef;
5781         enum nl80211_dfs_regions dfs_region;
5782         unsigned int cac_time_ms;
5783         int err;
5784
5785         dfs_region = reg_get_dfs_region(wdev->wiphy);
5786         if (dfs_region == NL80211_DFS_UNSET)
5787                 return -EINVAL;
5788
5789         err = nl80211_parse_chandef(rdev, info, &chandef);
5790         if (err)
5791                 return err;
5792
5793         if (netif_carrier_ok(dev))
5794                 return -EBUSY;
5795
5796         if (wdev->cac_started)
5797                 return -EBUSY;
5798
5799         err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef);
5800         if (err < 0)
5801                 return err;
5802
5803         if (err == 0)
5804                 return -EINVAL;
5805
5806         if (!cfg80211_chandef_dfs_usable(wdev->wiphy, &chandef))
5807                 return -EINVAL;
5808
5809         if (!rdev->ops->start_radar_detection)
5810                 return -EOPNOTSUPP;
5811
5812         err = cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype,
5813                                            chandef.chan, CHAN_MODE_SHARED,
5814                                            BIT(chandef.width));
5815         if (err)
5816                 return err;
5817
5818         cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
5819         if (WARN_ON(!cac_time_ms))
5820                 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
5821
5822         err = rdev->ops->start_radar_detection(&rdev->wiphy, dev, &chandef,
5823                                                cac_time_ms);
5824         if (!err) {
5825                 wdev->chandef = chandef;
5826                 wdev->cac_started = true;
5827                 wdev->cac_start_time = jiffies;
5828                 wdev->cac_time_ms = cac_time_ms;
5829         }
5830         return err;
5831 }
5832
5833 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
5834 {
5835         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5836         struct net_device *dev = info->user_ptr[1];
5837         struct wireless_dev *wdev = dev->ieee80211_ptr;
5838         struct cfg80211_csa_settings params;
5839         /* csa_attrs is defined static to avoid waste of stack size - this
5840          * function is called under RTNL lock, so this should not be a problem.
5841          */
5842         static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
5843         u8 radar_detect_width = 0;
5844         int err;
5845         bool need_new_beacon = false;
5846
5847         if (!rdev->ops->channel_switch ||
5848             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
5849                 return -EOPNOTSUPP;
5850
5851         switch (dev->ieee80211_ptr->iftype) {
5852         case NL80211_IFTYPE_AP:
5853         case NL80211_IFTYPE_P2P_GO:
5854                 need_new_beacon = true;
5855
5856                 /* useless if AP is not running */
5857                 if (!wdev->beacon_interval)
5858                         return -ENOTCONN;
5859                 break;
5860         case NL80211_IFTYPE_ADHOC:
5861                 if (!wdev->ssid_len)
5862                         return -ENOTCONN;
5863                 break;
5864         case NL80211_IFTYPE_MESH_POINT:
5865                 if (!wdev->mesh_id_len)
5866                         return -ENOTCONN;
5867                 break;
5868         default:
5869                 return -EOPNOTSUPP;
5870         }
5871
5872         memset(&params, 0, sizeof(params));
5873
5874         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
5875             !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
5876                 return -EINVAL;
5877
5878         /* only important for AP, IBSS and mesh create IEs internally */
5879         if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
5880                 return -EINVAL;
5881
5882         params.count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
5883
5884         if (!need_new_beacon)
5885                 goto skip_beacons;
5886
5887         err = nl80211_parse_beacon(info->attrs, &params.beacon_after);
5888         if (err)
5889                 return err;
5890
5891         err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX,
5892                                info->attrs[NL80211_ATTR_CSA_IES],
5893                                nl80211_policy);
5894         if (err)
5895                 return err;
5896
5897         err = nl80211_parse_beacon(csa_attrs, &params.beacon_csa);
5898         if (err)
5899                 return err;
5900
5901         if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
5902                 return -EINVAL;
5903
5904         params.counter_offset_beacon =
5905                 nla_get_u16(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
5906         if (params.counter_offset_beacon >= params.beacon_csa.tail_len)
5907                 return -EINVAL;
5908
5909         /* sanity check - counters should be the same */
5910         if (params.beacon_csa.tail[params.counter_offset_beacon] !=
5911             params.count)
5912                 return -EINVAL;
5913
5914         if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
5915                 params.counter_offset_presp =
5916                         nla_get_u16(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
5917                 if (params.counter_offset_presp >=
5918                     params.beacon_csa.probe_resp_len)
5919                         return -EINVAL;
5920
5921                 if (params.beacon_csa.probe_resp[params.counter_offset_presp] !=
5922                     params.count)
5923                         return -EINVAL;
5924         }
5925
5926 skip_beacons:
5927         err = nl80211_parse_chandef(rdev, info, &params.chandef);
5928         if (err)
5929                 return err;
5930
5931         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef))
5932                 return -EINVAL;
5933
5934         switch (dev->ieee80211_ptr->iftype) {
5935         case NL80211_IFTYPE_AP:
5936         case NL80211_IFTYPE_P2P_GO:
5937         case NL80211_IFTYPE_ADHOC:
5938         case NL80211_IFTYPE_MESH_POINT:
5939                 err = cfg80211_chandef_dfs_required(wdev->wiphy,
5940                                                     &params.chandef);
5941                 if (err < 0)
5942                         return err;
5943                 if (err) {
5944                         radar_detect_width = BIT(params.chandef.width);
5945                         params.radar_required = true;
5946                 }
5947                 break;
5948         default:
5949                 break;
5950         }
5951
5952         err = cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype,
5953                                            params.chandef.chan,
5954                                            CHAN_MODE_SHARED,
5955                                            radar_detect_width);
5956         if (err)
5957                 return err;
5958
5959         if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
5960                 params.block_tx = true;
5961
5962         wdev_lock(wdev);
5963         err = rdev_channel_switch(rdev, dev, &params);
5964         wdev_unlock(wdev);
5965
5966         return err;
5967 }
5968
5969 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
5970                             u32 seq, int flags,
5971                             struct cfg80211_registered_device *rdev,
5972                             struct wireless_dev *wdev,
5973                             struct cfg80211_internal_bss *intbss)
5974 {
5975         struct cfg80211_bss *res = &intbss->pub;
5976         const struct cfg80211_bss_ies *ies;
5977         void *hdr;
5978         struct nlattr *bss;
5979         bool tsf = false;
5980
5981         ASSERT_WDEV_LOCK(wdev);
5982
5983         hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
5984                              NL80211_CMD_NEW_SCAN_RESULTS);
5985         if (!hdr)
5986                 return -1;
5987
5988         genl_dump_check_consistent(cb, hdr, &nl80211_fam);
5989
5990         if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
5991                 goto nla_put_failure;
5992         if (wdev->netdev &&
5993             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
5994                 goto nla_put_failure;
5995         if (nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
5996                 goto nla_put_failure;
5997
5998         bss = nla_nest_start(msg, NL80211_ATTR_BSS);
5999         if (!bss)
6000                 goto nla_put_failure;
6001         if ((!is_zero_ether_addr(res->bssid) &&
6002              nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
6003                 goto nla_put_failure;
6004
6005         rcu_read_lock();
6006         ies = rcu_dereference(res->ies);
6007         if (ies) {
6008                 if (nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf))
6009                         goto fail_unlock_rcu;
6010                 tsf = true;
6011                 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
6012                                         ies->len, ies->data))
6013                         goto fail_unlock_rcu;
6014         }
6015         ies = rcu_dereference(res->beacon_ies);
6016         if (ies) {
6017                 if (!tsf && nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf))
6018                         goto fail_unlock_rcu;
6019                 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
6020                                         ies->len, ies->data))
6021                         goto fail_unlock_rcu;
6022         }
6023         rcu_read_unlock();
6024
6025         if (res->beacon_interval &&
6026             nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
6027                 goto nla_put_failure;
6028         if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
6029             nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
6030             nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
6031             nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
6032                         jiffies_to_msecs(jiffies - intbss->ts)))
6033                 goto nla_put_failure;
6034
6035         switch (rdev->wiphy.signal_type) {
6036         case CFG80211_SIGNAL_TYPE_MBM:
6037                 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
6038                         goto nla_put_failure;
6039                 break;
6040         case CFG80211_SIGNAL_TYPE_UNSPEC:
6041                 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
6042                         goto nla_put_failure;
6043                 break;
6044         default:
6045                 break;
6046         }
6047
6048         switch (wdev->iftype) {
6049         case NL80211_IFTYPE_P2P_CLIENT:
6050         case NL80211_IFTYPE_STATION:
6051                 if (intbss == wdev->current_bss &&
6052                     nla_put_u32(msg, NL80211_BSS_STATUS,
6053                                 NL80211_BSS_STATUS_ASSOCIATED))
6054                         goto nla_put_failure;
6055                 break;
6056         case NL80211_IFTYPE_ADHOC:
6057                 if (intbss == wdev->current_bss &&
6058                     nla_put_u32(msg, NL80211_BSS_STATUS,
6059                                 NL80211_BSS_STATUS_IBSS_JOINED))
6060                         goto nla_put_failure;
6061                 break;
6062         default:
6063                 break;
6064         }
6065
6066         nla_nest_end(msg, bss);
6067
6068         return genlmsg_end(msg, hdr);
6069
6070  fail_unlock_rcu:
6071         rcu_read_unlock();
6072  nla_put_failure:
6073         genlmsg_cancel(msg, hdr);
6074         return -EMSGSIZE;
6075 }
6076
6077 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
6078 {
6079         struct cfg80211_registered_device *rdev;
6080         struct cfg80211_internal_bss *scan;
6081         struct wireless_dev *wdev;
6082         int start = cb->args[2], idx = 0;
6083         int err;
6084
6085         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
6086         if (err)
6087                 return err;
6088
6089         wdev_lock(wdev);
6090         spin_lock_bh(&rdev->bss_lock);
6091         cfg80211_bss_expire(rdev);
6092
6093         cb->seq = rdev->bss_generation;
6094
6095         list_for_each_entry(scan, &rdev->bss_list, list) {
6096                 if (++idx <= start)
6097                         continue;
6098                 if (nl80211_send_bss(skb, cb,
6099                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6100                                 rdev, wdev, scan) < 0) {
6101                         idx--;
6102                         break;
6103                 }
6104         }
6105
6106         spin_unlock_bh(&rdev->bss_lock);
6107         wdev_unlock(wdev);
6108
6109         cb->args[2] = idx;
6110         nl80211_finish_wdev_dump(rdev);
6111
6112         return skb->len;
6113 }
6114
6115 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
6116                                 int flags, struct net_device *dev,
6117                                 struct survey_info *survey)
6118 {
6119         void *hdr;
6120         struct nlattr *infoattr;
6121
6122         hdr = nl80211hdr_put(msg, portid, seq, flags,
6123                              NL80211_CMD_NEW_SURVEY_RESULTS);
6124         if (!hdr)
6125                 return -ENOMEM;
6126
6127         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
6128                 goto nla_put_failure;
6129
6130         infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
6131         if (!infoattr)
6132                 goto nla_put_failure;
6133
6134         if (nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
6135                         survey->channel->center_freq))
6136                 goto nla_put_failure;
6137
6138         if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
6139             nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
6140                 goto nla_put_failure;
6141         if ((survey->filled & SURVEY_INFO_IN_USE) &&
6142             nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
6143                 goto nla_put_failure;
6144         if ((survey->filled & SURVEY_INFO_CHANNEL_TIME) &&
6145             nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME,
6146                         survey->channel_time))
6147                 goto nla_put_failure;
6148         if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_BUSY) &&
6149             nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY,
6150                         survey->channel_time_busy))
6151                 goto nla_put_failure;
6152         if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY) &&
6153             nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY,
6154                         survey->channel_time_ext_busy))
6155                 goto nla_put_failure;
6156         if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_RX) &&
6157             nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_RX,
6158                         survey->channel_time_rx))
6159                 goto nla_put_failure;
6160         if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_TX) &&
6161             nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_TX,
6162                         survey->channel_time_tx))
6163                 goto nla_put_failure;
6164
6165         nla_nest_end(msg, infoattr);
6166
6167         return genlmsg_end(msg, hdr);
6168
6169  nla_put_failure:
6170         genlmsg_cancel(msg, hdr);
6171         return -EMSGSIZE;
6172 }
6173
6174 static int nl80211_dump_survey(struct sk_buff *skb,
6175                         struct netlink_callback *cb)
6176 {
6177         struct survey_info survey;
6178         struct cfg80211_registered_device *dev;
6179         struct wireless_dev *wdev;
6180         int survey_idx = cb->args[2];
6181         int res;
6182
6183         res = nl80211_prepare_wdev_dump(skb, cb, &dev, &wdev);
6184         if (res)
6185                 return res;
6186
6187         if (!wdev->netdev) {
6188                 res = -EINVAL;
6189                 goto out_err;
6190         }
6191
6192         if (!dev->ops->dump_survey) {
6193                 res = -EOPNOTSUPP;
6194                 goto out_err;
6195         }
6196
6197         while (1) {
6198                 struct ieee80211_channel *chan;
6199
6200                 res = rdev_dump_survey(dev, wdev->netdev, survey_idx, &survey);
6201                 if (res == -ENOENT)
6202                         break;
6203                 if (res)
6204                         goto out_err;
6205
6206                 /* Survey without a channel doesn't make sense */
6207                 if (!survey.channel) {
6208                         res = -EINVAL;
6209                         goto out;
6210                 }
6211
6212                 chan = ieee80211_get_channel(&dev->wiphy,
6213                                              survey.channel->center_freq);
6214                 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) {
6215                         survey_idx++;
6216                         continue;
6217                 }
6218
6219                 if (nl80211_send_survey(skb,
6220                                 NETLINK_CB(cb->skb).portid,
6221                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6222                                 wdev->netdev, &survey) < 0)
6223                         goto out;
6224                 survey_idx++;
6225         }
6226
6227  out:
6228         cb->args[2] = survey_idx;
6229         res = skb->len;
6230  out_err:
6231         nl80211_finish_wdev_dump(dev);
6232         return res;
6233 }
6234
6235 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
6236 {
6237         return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
6238                                   NL80211_WPA_VERSION_2));
6239 }
6240
6241 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
6242 {
6243         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6244         struct net_device *dev = info->user_ptr[1];
6245         struct ieee80211_channel *chan;
6246         const u8 *bssid, *ssid, *ie = NULL, *sae_data = NULL;
6247         int err, ssid_len, ie_len = 0, sae_data_len = 0;
6248         enum nl80211_auth_type auth_type;
6249         struct key_parse key;
6250         bool local_state_change;
6251
6252         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6253                 return -EINVAL;
6254
6255         if (!info->attrs[NL80211_ATTR_MAC])
6256                 return -EINVAL;
6257
6258         if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
6259                 return -EINVAL;
6260
6261         if (!info->attrs[NL80211_ATTR_SSID])
6262                 return -EINVAL;
6263
6264         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
6265                 return -EINVAL;
6266
6267         err = nl80211_parse_key(info, &key);
6268         if (err)
6269                 return err;
6270
6271         if (key.idx >= 0) {
6272                 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
6273                         return -EINVAL;
6274                 if (!key.p.key || !key.p.key_len)
6275                         return -EINVAL;
6276                 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
6277                      key.p.key_len != WLAN_KEY_LEN_WEP40) &&
6278                     (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
6279                      key.p.key_len != WLAN_KEY_LEN_WEP104))
6280                         return -EINVAL;
6281                 if (key.idx > 4)
6282                         return -EINVAL;
6283         } else {
6284                 key.p.key_len = 0;
6285                 key.p.key = NULL;
6286         }
6287
6288         if (key.idx >= 0) {
6289                 int i;
6290                 bool ok = false;
6291                 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
6292                         if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
6293                                 ok = true;
6294                                 break;
6295                         }
6296                 }
6297                 if (!ok)
6298                         return -EINVAL;
6299         }
6300
6301         if (!rdev->ops->auth)
6302                 return -EOPNOTSUPP;
6303
6304         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6305             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6306                 return -EOPNOTSUPP;
6307
6308         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6309         chan = nl80211_get_valid_chan(&rdev->wiphy,
6310                                       info->attrs[NL80211_ATTR_WIPHY_FREQ]);
6311         if (!chan)
6312                 return -EINVAL;
6313
6314         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6315         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6316
6317         if (info->attrs[NL80211_ATTR_IE]) {
6318                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6319                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6320         }
6321
6322         auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
6323         if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
6324                 return -EINVAL;
6325
6326         if (auth_type == NL80211_AUTHTYPE_SAE &&
6327             !info->attrs[NL80211_ATTR_SAE_DATA])
6328                 return -EINVAL;
6329
6330         if (info->attrs[NL80211_ATTR_SAE_DATA]) {
6331                 if (auth_type != NL80211_AUTHTYPE_SAE)
6332                         return -EINVAL;
6333                 sae_data = nla_data(info->attrs[NL80211_ATTR_SAE_DATA]);
6334                 sae_data_len = nla_len(info->attrs[NL80211_ATTR_SAE_DATA]);
6335                 /* need to include at least Auth Transaction and Status Code */
6336                 if (sae_data_len < 4)
6337                         return -EINVAL;
6338         }
6339
6340         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6341
6342         /*
6343          * Since we no longer track auth state, ignore
6344          * requests to only change local state.
6345          */
6346         if (local_state_change)
6347                 return 0;
6348
6349         wdev_lock(dev->ieee80211_ptr);
6350         err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
6351                                  ssid, ssid_len, ie, ie_len,
6352                                  key.p.key, key.p.key_len, key.idx,
6353                                  sae_data, sae_data_len);
6354         wdev_unlock(dev->ieee80211_ptr);
6355         return err;
6356 }
6357
6358 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
6359                                    struct genl_info *info,
6360                                    struct cfg80211_crypto_settings *settings,
6361                                    int cipher_limit)
6362 {
6363         memset(settings, 0, sizeof(*settings));
6364
6365         settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
6366
6367         if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
6368                 u16 proto;
6369                 proto = nla_get_u16(
6370                         info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
6371                 settings->control_port_ethertype = cpu_to_be16(proto);
6372                 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
6373                     proto != ETH_P_PAE)
6374                         return -EINVAL;
6375                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
6376                         settings->control_port_no_encrypt = true;
6377         } else
6378                 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
6379
6380         if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
6381                 void *data;
6382                 int len, i;
6383
6384                 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6385                 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6386                 settings->n_ciphers_pairwise = len / sizeof(u32);
6387
6388                 if (len % sizeof(u32))
6389                         return -EINVAL;
6390
6391                 if (settings->n_ciphers_pairwise > cipher_limit)
6392                         return -EINVAL;
6393
6394                 memcpy(settings->ciphers_pairwise, data, len);
6395
6396                 for (i = 0; i < settings->n_ciphers_pairwise; i++)
6397                         if (!cfg80211_supported_cipher_suite(
6398                                         &rdev->wiphy,
6399                                         settings->ciphers_pairwise[i]))
6400                                 return -EINVAL;
6401         }
6402
6403         if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
6404                 settings->cipher_group =
6405                         nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
6406                 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
6407                                                      settings->cipher_group))
6408                         return -EINVAL;
6409         }
6410
6411         if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
6412                 settings->wpa_versions =
6413                         nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
6414                 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
6415                         return -EINVAL;
6416         }
6417
6418         if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
6419                 void *data;
6420                 int len;
6421
6422                 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
6423                 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
6424                 settings->n_akm_suites = len / sizeof(u32);
6425
6426                 if (len % sizeof(u32))
6427                         return -EINVAL;
6428
6429                 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
6430                         return -EINVAL;
6431
6432                 memcpy(settings->akm_suites, data, len);
6433         }
6434
6435         return 0;
6436 }
6437
6438 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
6439 {
6440         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6441         struct net_device *dev = info->user_ptr[1];
6442         struct ieee80211_channel *chan;
6443         struct cfg80211_assoc_request req = {};
6444         const u8 *bssid, *ssid;
6445         int err, ssid_len = 0;
6446
6447         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6448                 return -EINVAL;
6449
6450         if (!info->attrs[NL80211_ATTR_MAC] ||
6451             !info->attrs[NL80211_ATTR_SSID] ||
6452             !info->attrs[NL80211_ATTR_WIPHY_FREQ])
6453                 return -EINVAL;
6454
6455         if (!rdev->ops->assoc)
6456                 return -EOPNOTSUPP;
6457
6458         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6459             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6460                 return -EOPNOTSUPP;
6461
6462         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6463
6464         chan = nl80211_get_valid_chan(&rdev->wiphy,
6465                                       info->attrs[NL80211_ATTR_WIPHY_FREQ]);
6466         if (!chan)
6467                 return -EINVAL;
6468
6469         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6470         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6471
6472         if (info->attrs[NL80211_ATTR_IE]) {
6473                 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6474                 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6475         }
6476
6477         if (info->attrs[NL80211_ATTR_USE_MFP]) {
6478                 enum nl80211_mfp mfp =
6479                         nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
6480                 if (mfp == NL80211_MFP_REQUIRED)
6481                         req.use_mfp = true;
6482                 else if (mfp != NL80211_MFP_NO)
6483                         return -EINVAL;
6484         }
6485
6486         if (info->attrs[NL80211_ATTR_PREV_BSSID])
6487                 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
6488
6489         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
6490                 req.flags |= ASSOC_REQ_DISABLE_HT;
6491
6492         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6493                 memcpy(&req.ht_capa_mask,
6494                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
6495                        sizeof(req.ht_capa_mask));
6496
6497         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
6498                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6499                         return -EINVAL;
6500                 memcpy(&req.ht_capa,
6501                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
6502                        sizeof(req.ht_capa));
6503         }
6504
6505         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
6506                 req.flags |= ASSOC_REQ_DISABLE_VHT;
6507
6508         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6509                 memcpy(&req.vht_capa_mask,
6510                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
6511                        sizeof(req.vht_capa_mask));
6512
6513         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
6514                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6515                         return -EINVAL;
6516                 memcpy(&req.vht_capa,
6517                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
6518                        sizeof(req.vht_capa));
6519         }
6520
6521         err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
6522         if (!err) {
6523                 wdev_lock(dev->ieee80211_ptr);
6524                 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
6525                                           ssid, ssid_len, &req);
6526                 wdev_unlock(dev->ieee80211_ptr);
6527         }
6528
6529         return err;
6530 }
6531
6532 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
6533 {
6534         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6535         struct net_device *dev = info->user_ptr[1];
6536         const u8 *ie = NULL, *bssid;
6537         int ie_len = 0, err;
6538         u16 reason_code;
6539         bool local_state_change;
6540
6541         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6542                 return -EINVAL;
6543
6544         if (!info->attrs[NL80211_ATTR_MAC])
6545                 return -EINVAL;
6546
6547         if (!info->attrs[NL80211_ATTR_REASON_CODE])
6548                 return -EINVAL;
6549
6550         if (!rdev->ops->deauth)
6551                 return -EOPNOTSUPP;
6552
6553         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6554             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6555                 return -EOPNOTSUPP;
6556
6557         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6558
6559         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6560         if (reason_code == 0) {
6561                 /* Reason Code 0 is reserved */
6562                 return -EINVAL;
6563         }
6564
6565         if (info->attrs[NL80211_ATTR_IE]) {
6566                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6567                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6568         }
6569
6570         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6571
6572         wdev_lock(dev->ieee80211_ptr);
6573         err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
6574                                    local_state_change);
6575         wdev_unlock(dev->ieee80211_ptr);
6576         return err;
6577 }
6578
6579 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
6580 {
6581         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6582         struct net_device *dev = info->user_ptr[1];
6583         const u8 *ie = NULL, *bssid;
6584         int ie_len = 0, err;
6585         u16 reason_code;
6586         bool local_state_change;
6587
6588         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6589                 return -EINVAL;
6590
6591         if (!info->attrs[NL80211_ATTR_MAC])
6592                 return -EINVAL;
6593
6594         if (!info->attrs[NL80211_ATTR_REASON_CODE])
6595                 return -EINVAL;
6596
6597         if (!rdev->ops->disassoc)
6598                 return -EOPNOTSUPP;
6599
6600         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6601             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6602                 return -EOPNOTSUPP;
6603
6604         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6605
6606         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6607         if (reason_code == 0) {
6608                 /* Reason Code 0 is reserved */
6609                 return -EINVAL;
6610         }
6611
6612         if (info->attrs[NL80211_ATTR_IE]) {
6613                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6614                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6615         }
6616
6617         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6618
6619         wdev_lock(dev->ieee80211_ptr);
6620         err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
6621                                      local_state_change);
6622         wdev_unlock(dev->ieee80211_ptr);
6623         return err;
6624 }
6625
6626 static bool
6627 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
6628                          int mcast_rate[IEEE80211_NUM_BANDS],
6629                          int rateval)
6630 {
6631         struct wiphy *wiphy = &rdev->wiphy;
6632         bool found = false;
6633         int band, i;
6634
6635         for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
6636                 struct ieee80211_supported_band *sband;
6637
6638                 sband = wiphy->bands[band];
6639                 if (!sband)
6640                         continue;
6641
6642                 for (i = 0; i < sband->n_bitrates; i++) {
6643                         if (sband->bitrates[i].bitrate == rateval) {
6644                                 mcast_rate[band] = i + 1;
6645                                 found = true;
6646                                 break;
6647                         }
6648                 }
6649         }
6650
6651         return found;
6652 }
6653
6654 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
6655 {
6656         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6657         struct net_device *dev = info->user_ptr[1];
6658         struct cfg80211_ibss_params ibss;
6659         struct wiphy *wiphy;
6660         struct cfg80211_cached_keys *connkeys = NULL;
6661         int err;
6662
6663         memset(&ibss, 0, sizeof(ibss));
6664
6665         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6666                 return -EINVAL;
6667
6668         if (!info->attrs[NL80211_ATTR_SSID] ||
6669             !nla_len(info->attrs[NL80211_ATTR_SSID]))
6670                 return -EINVAL;
6671
6672         ibss.beacon_interval = 100;
6673
6674         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
6675                 ibss.beacon_interval =
6676                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
6677                 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
6678                         return -EINVAL;
6679         }
6680
6681         if (!rdev->ops->join_ibss)
6682                 return -EOPNOTSUPP;
6683
6684         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
6685                 return -EOPNOTSUPP;
6686
6687         wiphy = &rdev->wiphy;
6688
6689         if (info->attrs[NL80211_ATTR_MAC]) {
6690                 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6691
6692                 if (!is_valid_ether_addr(ibss.bssid))
6693                         return -EINVAL;
6694         }
6695         ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6696         ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6697
6698         if (info->attrs[NL80211_ATTR_IE]) {
6699                 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6700                 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6701         }
6702
6703         err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
6704         if (err)
6705                 return err;
6706
6707         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef))
6708                 return -EINVAL;
6709
6710         switch (ibss.chandef.width) {
6711         case NL80211_CHAN_WIDTH_5:
6712         case NL80211_CHAN_WIDTH_10:
6713         case NL80211_CHAN_WIDTH_20_NOHT:
6714                 break;
6715         case NL80211_CHAN_WIDTH_20:
6716         case NL80211_CHAN_WIDTH_40:
6717                 if (rdev->wiphy.features & NL80211_FEATURE_HT_IBSS)
6718                         break;
6719         default:
6720                 return -EINVAL;
6721         }
6722
6723         ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
6724         ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
6725
6726         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
6727                 u8 *rates =
6728                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6729                 int n_rates =
6730                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6731                 struct ieee80211_supported_band *sband =
6732                         wiphy->bands[ibss.chandef.chan->band];
6733
6734                 err = ieee80211_get_ratemask(sband, rates, n_rates,
6735                                              &ibss.basic_rates);
6736                 if (err)
6737                         return err;
6738         }
6739
6740         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6741                 memcpy(&ibss.ht_capa_mask,
6742                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
6743                        sizeof(ibss.ht_capa_mask));
6744
6745         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
6746                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6747                         return -EINVAL;
6748                 memcpy(&ibss.ht_capa,
6749                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
6750                        sizeof(ibss.ht_capa));
6751         }
6752
6753         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
6754             !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
6755                         nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
6756                 return -EINVAL;
6757
6758         if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
6759                 bool no_ht = false;
6760
6761                 connkeys = nl80211_parse_connkeys(rdev,
6762                                           info->attrs[NL80211_ATTR_KEYS],
6763                                           &no_ht);
6764                 if (IS_ERR(connkeys))
6765                         return PTR_ERR(connkeys);
6766
6767                 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
6768                     no_ht) {
6769                         kfree(connkeys);
6770                         return -EINVAL;
6771                 }
6772         }
6773
6774         ibss.control_port =
6775                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
6776
6777         ibss.userspace_handles_dfs =
6778                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
6779
6780         err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
6781         if (err)
6782                 kfree(connkeys);
6783         return err;
6784 }
6785
6786 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
6787 {
6788         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6789         struct net_device *dev = info->user_ptr[1];
6790
6791         if (!rdev->ops->leave_ibss)
6792                 return -EOPNOTSUPP;
6793
6794         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
6795                 return -EOPNOTSUPP;
6796
6797         return cfg80211_leave_ibss(rdev, dev, false);
6798 }
6799
6800 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
6801 {
6802         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6803         struct net_device *dev = info->user_ptr[1];
6804         int mcast_rate[IEEE80211_NUM_BANDS];
6805         u32 nla_rate;
6806         int err;
6807
6808         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
6809             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6810                 return -EOPNOTSUPP;
6811
6812         if (!rdev->ops->set_mcast_rate)
6813                 return -EOPNOTSUPP;
6814
6815         memset(mcast_rate, 0, sizeof(mcast_rate));
6816
6817         if (!info->attrs[NL80211_ATTR_MCAST_RATE])
6818                 return -EINVAL;
6819
6820         nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
6821         if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
6822                 return -EINVAL;
6823
6824         err = rdev->ops->set_mcast_rate(&rdev->wiphy, dev, mcast_rate);
6825
6826         return err;
6827 }
6828
6829 static struct sk_buff *
6830 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
6831                             int approxlen, u32 portid, u32 seq,
6832                             enum nl80211_commands cmd,
6833                             enum nl80211_attrs attr,
6834                             const struct nl80211_vendor_cmd_info *info,
6835                             gfp_t gfp)
6836 {
6837         struct sk_buff *skb;
6838         void *hdr;
6839         struct nlattr *data;
6840
6841         skb = nlmsg_new(approxlen + 100, gfp);
6842         if (!skb)
6843                 return NULL;
6844
6845         hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
6846         if (!hdr) {
6847                 kfree_skb(skb);
6848                 return NULL;
6849         }
6850
6851         if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
6852                 goto nla_put_failure;
6853
6854         if (info) {
6855                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
6856                                 info->vendor_id))
6857                         goto nla_put_failure;
6858                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
6859                                 info->subcmd))
6860                         goto nla_put_failure;
6861         }
6862
6863         data = nla_nest_start(skb, attr);
6864
6865         ((void **)skb->cb)[0] = rdev;
6866         ((void **)skb->cb)[1] = hdr;
6867         ((void **)skb->cb)[2] = data;
6868
6869         return skb;
6870
6871  nla_put_failure:
6872         kfree_skb(skb);
6873         return NULL;
6874 }
6875
6876 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
6877                                            enum nl80211_commands cmd,
6878                                            enum nl80211_attrs attr,
6879                                            int vendor_event_idx,
6880                                            int approxlen, gfp_t gfp)
6881 {
6882         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
6883         const struct nl80211_vendor_cmd_info *info;
6884
6885         switch (cmd) {
6886         case NL80211_CMD_TESTMODE:
6887                 if (WARN_ON(vendor_event_idx != -1))
6888                         return NULL;
6889                 info = NULL;
6890                 break;
6891         case NL80211_CMD_VENDOR:
6892                 if (WARN_ON(vendor_event_idx < 0 ||
6893                             vendor_event_idx >= wiphy->n_vendor_events))
6894                         return NULL;
6895                 info = &wiphy->vendor_events[vendor_event_idx];
6896                 break;
6897         default:
6898                 WARN_ON(1);
6899                 return NULL;
6900         }
6901
6902         return __cfg80211_alloc_vendor_skb(rdev, approxlen, 0, 0,
6903                                            cmd, attr, info, gfp);
6904 }
6905 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
6906
6907 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
6908 {
6909         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
6910         void *hdr = ((void **)skb->cb)[1];
6911         struct nlattr *data = ((void **)skb->cb)[2];
6912         enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
6913
6914         nla_nest_end(skb, data);
6915         genlmsg_end(skb, hdr);
6916
6917         if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
6918                 mcgrp = NL80211_MCGRP_VENDOR;
6919
6920         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), skb, 0,
6921                                 mcgrp, gfp);
6922 }
6923 EXPORT_SYMBOL(__cfg80211_send_event_skb);
6924
6925 #ifdef CONFIG_NL80211_TESTMODE
6926 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
6927 {
6928         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6929         struct wireless_dev *wdev =
6930                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
6931         int err;
6932
6933         if (!rdev->ops->testmode_cmd)
6934                 return -EOPNOTSUPP;
6935
6936         if (IS_ERR(wdev)) {
6937                 err = PTR_ERR(wdev);
6938                 if (err != -EINVAL)
6939                         return err;
6940                 wdev = NULL;
6941         } else if (wdev->wiphy != &rdev->wiphy) {
6942                 return -EINVAL;
6943         }
6944
6945         if (!info->attrs[NL80211_ATTR_TESTDATA])
6946                 return -EINVAL;
6947
6948         rdev->cur_cmd_info = info;
6949         err = rdev_testmode_cmd(rdev, wdev,
6950                                 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
6951                                 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
6952         rdev->cur_cmd_info = NULL;
6953
6954         return err;
6955 }
6956
6957 static int nl80211_testmode_dump(struct sk_buff *skb,
6958                                  struct netlink_callback *cb)
6959 {
6960         struct cfg80211_registered_device *rdev;
6961         int err;
6962         long phy_idx;
6963         void *data = NULL;
6964         int data_len = 0;
6965
6966         rtnl_lock();
6967
6968         if (cb->args[0]) {
6969                 /*
6970                  * 0 is a valid index, but not valid for args[0],
6971                  * so we need to offset by 1.
6972                  */
6973                 phy_idx = cb->args[0] - 1;
6974         } else {
6975                 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
6976                                   nl80211_fam.attrbuf, nl80211_fam.maxattr,
6977                                   nl80211_policy);
6978                 if (err)
6979                         goto out_err;
6980
6981                 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk),
6982                                                   nl80211_fam.attrbuf);
6983                 if (IS_ERR(rdev)) {
6984                         err = PTR_ERR(rdev);
6985                         goto out_err;
6986                 }
6987                 phy_idx = rdev->wiphy_idx;
6988                 rdev = NULL;
6989
6990                 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
6991                         cb->args[1] =
6992                                 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
6993         }
6994
6995         if (cb->args[1]) {
6996                 data = nla_data((void *)cb->args[1]);
6997                 data_len = nla_len((void *)cb->args[1]);
6998         }
6999
7000         rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
7001         if (!rdev) {
7002                 err = -ENOENT;
7003                 goto out_err;
7004         }
7005
7006         if (!rdev->ops->testmode_dump) {
7007                 err = -EOPNOTSUPP;
7008                 goto out_err;
7009         }
7010
7011         while (1) {
7012                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
7013                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
7014                                            NL80211_CMD_TESTMODE);
7015                 struct nlattr *tmdata;
7016
7017                 if (!hdr)
7018                         break;
7019
7020                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
7021                         genlmsg_cancel(skb, hdr);
7022                         break;
7023                 }
7024
7025                 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
7026                 if (!tmdata) {
7027                         genlmsg_cancel(skb, hdr);
7028                         break;
7029                 }
7030                 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
7031                 nla_nest_end(skb, tmdata);
7032
7033                 if (err == -ENOBUFS || err == -ENOENT) {
7034                         genlmsg_cancel(skb, hdr);
7035                         break;
7036                 } else if (err) {
7037                         genlmsg_cancel(skb, hdr);
7038                         goto out_err;
7039                 }
7040
7041                 genlmsg_end(skb, hdr);
7042         }
7043
7044         err = skb->len;
7045         /* see above */
7046         cb->args[0] = phy_idx + 1;
7047  out_err:
7048         rtnl_unlock();
7049         return err;
7050 }
7051 #endif
7052
7053 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
7054 {
7055         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7056         struct net_device *dev = info->user_ptr[1];
7057         struct cfg80211_connect_params connect;
7058         struct wiphy *wiphy;
7059         struct cfg80211_cached_keys *connkeys = NULL;
7060         int err;
7061
7062         memset(&connect, 0, sizeof(connect));
7063
7064         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7065                 return -EINVAL;
7066
7067         if (!info->attrs[NL80211_ATTR_SSID] ||
7068             !nla_len(info->attrs[NL80211_ATTR_SSID]))
7069                 return -EINVAL;
7070
7071         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
7072                 connect.auth_type =
7073                         nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
7074                 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
7075                                              NL80211_CMD_CONNECT))
7076                         return -EINVAL;
7077         } else
7078                 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
7079
7080         connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
7081
7082         err = nl80211_crypto_settings(rdev, info, &connect.crypto,
7083                                       NL80211_MAX_NR_CIPHER_SUITES);
7084         if (err)
7085                 return err;
7086
7087         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7088             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7089                 return -EOPNOTSUPP;
7090
7091         wiphy = &rdev->wiphy;
7092
7093         connect.bg_scan_period = -1;
7094         if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
7095                 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
7096                 connect.bg_scan_period =
7097                         nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
7098         }
7099
7100         if (info->attrs[NL80211_ATTR_MAC])
7101                 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7102         else if (info->attrs[NL80211_ATTR_MAC_HINT])
7103                 connect.bssid_hint =
7104                         nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
7105         connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7106         connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7107
7108         if (info->attrs[NL80211_ATTR_IE]) {
7109                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7110                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7111         }
7112
7113         if (info->attrs[NL80211_ATTR_USE_MFP]) {
7114                 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
7115                 if (connect.mfp != NL80211_MFP_REQUIRED &&
7116                     connect.mfp != NL80211_MFP_NO)
7117                         return -EINVAL;
7118         } else {
7119                 connect.mfp = NL80211_MFP_NO;
7120         }
7121
7122         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
7123                 connect.channel = nl80211_get_valid_chan(
7124                         wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]);
7125                 if (!connect.channel)
7126                         return -EINVAL;
7127         } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
7128                 connect.channel_hint = nl80211_get_valid_chan(
7129                         wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
7130                 if (!connect.channel_hint)
7131                         return -EINVAL;
7132         }
7133
7134         if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
7135                 connkeys = nl80211_parse_connkeys(rdev,
7136                                           info->attrs[NL80211_ATTR_KEYS], NULL);
7137                 if (IS_ERR(connkeys))
7138                         return PTR_ERR(connkeys);
7139         }
7140
7141         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
7142                 connect.flags |= ASSOC_REQ_DISABLE_HT;
7143
7144         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7145                 memcpy(&connect.ht_capa_mask,
7146                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
7147                        sizeof(connect.ht_capa_mask));
7148
7149         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
7150                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
7151                         kfree(connkeys);
7152                         return -EINVAL;
7153                 }
7154                 memcpy(&connect.ht_capa,
7155                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7156                        sizeof(connect.ht_capa));
7157         }
7158
7159         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
7160                 connect.flags |= ASSOC_REQ_DISABLE_VHT;
7161
7162         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
7163                 memcpy(&connect.vht_capa_mask,
7164                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
7165                        sizeof(connect.vht_capa_mask));
7166
7167         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
7168                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
7169                         kfree(connkeys);
7170                         return -EINVAL;
7171                 }
7172                 memcpy(&connect.vht_capa,
7173                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
7174                        sizeof(connect.vht_capa));
7175         }
7176
7177         wdev_lock(dev->ieee80211_ptr);
7178         err = cfg80211_connect(rdev, dev, &connect, connkeys, NULL);
7179         wdev_unlock(dev->ieee80211_ptr);
7180         if (err)
7181                 kfree(connkeys);
7182         return err;
7183 }
7184
7185 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
7186 {
7187         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7188         struct net_device *dev = info->user_ptr[1];
7189         u16 reason;
7190         int ret;
7191
7192         if (!info->attrs[NL80211_ATTR_REASON_CODE])
7193                 reason = WLAN_REASON_DEAUTH_LEAVING;
7194         else
7195                 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7196
7197         if (reason == 0)
7198                 return -EINVAL;
7199
7200         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7201             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7202                 return -EOPNOTSUPP;
7203
7204         wdev_lock(dev->ieee80211_ptr);
7205         ret = cfg80211_disconnect(rdev, dev, reason, true);
7206         wdev_unlock(dev->ieee80211_ptr);
7207         return ret;
7208 }
7209
7210 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
7211 {
7212         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7213         struct net *net;
7214         int err;
7215         u32 pid;
7216
7217         if (!info->attrs[NL80211_ATTR_PID])
7218                 return -EINVAL;
7219
7220         pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
7221
7222         net = get_net_ns_by_pid(pid);
7223         if (IS_ERR(net))
7224                 return PTR_ERR(net);
7225
7226         err = 0;
7227
7228         /* check if anything to do */
7229         if (!net_eq(wiphy_net(&rdev->wiphy), net))
7230                 err = cfg80211_switch_netns(rdev, net);
7231
7232         put_net(net);
7233         return err;
7234 }
7235
7236 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
7237 {
7238         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7239         int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
7240                         struct cfg80211_pmksa *pmksa) = NULL;
7241         struct net_device *dev = info->user_ptr[1];
7242         struct cfg80211_pmksa pmksa;
7243
7244         memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
7245
7246         if (!info->attrs[NL80211_ATTR_MAC])
7247                 return -EINVAL;
7248
7249         if (!info->attrs[NL80211_ATTR_PMKID])
7250                 return -EINVAL;
7251
7252         pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
7253         pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7254
7255         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7256             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7257                 return -EOPNOTSUPP;
7258
7259         switch (info->genlhdr->cmd) {
7260         case NL80211_CMD_SET_PMKSA:
7261                 rdev_ops = rdev->ops->set_pmksa;
7262                 break;
7263         case NL80211_CMD_DEL_PMKSA:
7264                 rdev_ops = rdev->ops->del_pmksa;
7265                 break;
7266         default:
7267                 WARN_ON(1);
7268                 break;
7269         }
7270
7271         if (!rdev_ops)
7272                 return -EOPNOTSUPP;
7273
7274         return rdev_ops(&rdev->wiphy, dev, &pmksa);
7275 }
7276
7277 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
7278 {
7279         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7280         struct net_device *dev = info->user_ptr[1];
7281
7282         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7283             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7284                 return -EOPNOTSUPP;
7285
7286         if (!rdev->ops->flush_pmksa)
7287                 return -EOPNOTSUPP;
7288
7289         return rdev_flush_pmksa(rdev, dev);
7290 }
7291
7292 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
7293 {
7294         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7295         struct net_device *dev = info->user_ptr[1];
7296         u8 action_code, dialog_token;
7297         u32 peer_capability = 0;
7298         u16 status_code;
7299         u8 *peer;
7300
7301         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
7302             !rdev->ops->tdls_mgmt)
7303                 return -EOPNOTSUPP;
7304
7305         if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
7306             !info->attrs[NL80211_ATTR_STATUS_CODE] ||
7307             !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
7308             !info->attrs[NL80211_ATTR_IE] ||
7309             !info->attrs[NL80211_ATTR_MAC])
7310                 return -EINVAL;
7311
7312         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
7313         action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
7314         status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
7315         dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
7316         if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
7317                 peer_capability =
7318                         nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
7319
7320         return rdev_tdls_mgmt(rdev, dev, peer, action_code,
7321                               dialog_token, status_code, peer_capability,
7322                               nla_data(info->attrs[NL80211_ATTR_IE]),
7323                               nla_len(info->attrs[NL80211_ATTR_IE]));
7324 }
7325
7326 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
7327 {
7328         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7329         struct net_device *dev = info->user_ptr[1];
7330         enum nl80211_tdls_operation operation;
7331         u8 *peer;
7332
7333         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
7334             !rdev->ops->tdls_oper)
7335                 return -EOPNOTSUPP;
7336
7337         if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
7338             !info->attrs[NL80211_ATTR_MAC])
7339                 return -EINVAL;
7340
7341         operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
7342         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
7343
7344         return rdev_tdls_oper(rdev, dev, peer, operation);
7345 }
7346
7347 static int nl80211_remain_on_channel(struct sk_buff *skb,
7348                                      struct genl_info *info)
7349 {
7350         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7351         struct wireless_dev *wdev = info->user_ptr[1];
7352         struct cfg80211_chan_def chandef;
7353         struct sk_buff *msg;
7354         void *hdr;
7355         u64 cookie;
7356         u32 duration;
7357         int err;
7358
7359         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
7360             !info->attrs[NL80211_ATTR_DURATION])
7361                 return -EINVAL;
7362
7363         duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
7364
7365         if (!rdev->ops->remain_on_channel ||
7366             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
7367                 return -EOPNOTSUPP;
7368
7369         /*
7370          * We should be on that channel for at least a minimum amount of
7371          * time (10ms) but no longer than the driver supports.
7372          */
7373         if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
7374             duration > rdev->wiphy.max_remain_on_channel_duration)
7375                 return -EINVAL;
7376
7377         err = nl80211_parse_chandef(rdev, info, &chandef);
7378         if (err)
7379                 return err;
7380
7381         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7382         if (!msg)
7383                 return -ENOMEM;
7384
7385         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7386                              NL80211_CMD_REMAIN_ON_CHANNEL);
7387         if (!hdr) {
7388                 err = -ENOBUFS;
7389                 goto free_msg;
7390         }
7391
7392         err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
7393                                      duration, &cookie);
7394
7395         if (err)
7396                 goto free_msg;
7397
7398         if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
7399                 goto nla_put_failure;
7400
7401         genlmsg_end(msg, hdr);
7402
7403         return genlmsg_reply(msg, info);
7404
7405  nla_put_failure:
7406         err = -ENOBUFS;
7407  free_msg:
7408         nlmsg_free(msg);
7409         return err;
7410 }
7411
7412 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
7413                                             struct genl_info *info)
7414 {
7415         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7416         struct wireless_dev *wdev = info->user_ptr[1];
7417         u64 cookie;
7418
7419         if (!info->attrs[NL80211_ATTR_COOKIE])
7420                 return -EINVAL;
7421
7422         if (!rdev->ops->cancel_remain_on_channel)
7423                 return -EOPNOTSUPP;
7424
7425         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
7426
7427         return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
7428 }
7429
7430 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
7431                            u8 *rates, u8 rates_len)
7432 {
7433         u8 i;
7434         u32 mask = 0;
7435
7436         for (i = 0; i < rates_len; i++) {
7437                 int rate = (rates[i] & 0x7f) * 5;
7438                 int ridx;
7439                 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
7440                         struct ieee80211_rate *srate =
7441                                 &sband->bitrates[ridx];
7442                         if (rate == srate->bitrate) {
7443                                 mask |= 1 << ridx;
7444                                 break;
7445                         }
7446                 }
7447                 if (ridx == sband->n_bitrates)
7448                         return 0; /* rate not found */
7449         }
7450
7451         return mask;
7452 }
7453
7454 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
7455                                u8 *rates, u8 rates_len,
7456                                u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
7457 {
7458         u8 i;
7459
7460         memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
7461
7462         for (i = 0; i < rates_len; i++) {
7463                 int ridx, rbit;
7464
7465                 ridx = rates[i] / 8;
7466                 rbit = BIT(rates[i] % 8);
7467
7468                 /* check validity */
7469                 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
7470                         return false;
7471
7472                 /* check availability */
7473                 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
7474                         mcs[ridx] |= rbit;
7475                 else
7476                         return false;
7477         }
7478
7479         return true;
7480 }
7481
7482 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
7483 {
7484         u16 mcs_mask = 0;
7485
7486         switch (vht_mcs_map) {
7487         case IEEE80211_VHT_MCS_NOT_SUPPORTED:
7488                 break;
7489         case IEEE80211_VHT_MCS_SUPPORT_0_7:
7490                 mcs_mask = 0x00FF;
7491                 break;
7492         case IEEE80211_VHT_MCS_SUPPORT_0_8:
7493                 mcs_mask = 0x01FF;
7494                 break;
7495         case IEEE80211_VHT_MCS_SUPPORT_0_9:
7496                 mcs_mask = 0x03FF;
7497                 break;
7498         default:
7499                 break;
7500         }
7501
7502         return mcs_mask;
7503 }
7504
7505 static void vht_build_mcs_mask(u16 vht_mcs_map,
7506                                u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
7507 {
7508         u8 nss;
7509
7510         for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
7511                 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
7512                 vht_mcs_map >>= 2;
7513         }
7514 }
7515
7516 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
7517                              struct nl80211_txrate_vht *txrate,
7518                              u16 mcs[NL80211_VHT_NSS_MAX])
7519 {
7520         u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
7521         u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
7522         u8 i;
7523
7524         if (!sband->vht_cap.vht_supported)
7525                 return false;
7526
7527         memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
7528
7529         /* Build vht_mcs_mask from VHT capabilities */
7530         vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
7531
7532         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
7533                 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
7534                         mcs[i] = txrate->mcs[i];
7535                 else
7536                         return false;
7537         }
7538
7539         return true;
7540 }
7541
7542 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
7543         [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
7544                                     .len = NL80211_MAX_SUPP_RATES },
7545         [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
7546                                 .len = NL80211_MAX_SUPP_HT_RATES },
7547         [NL80211_TXRATE_VHT] = { .len = sizeof(struct nl80211_txrate_vht)},
7548         [NL80211_TXRATE_GI] = { .type = NLA_U8 },
7549 };
7550
7551 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
7552                                        struct genl_info *info)
7553 {
7554         struct nlattr *tb[NL80211_TXRATE_MAX + 1];
7555         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7556         struct cfg80211_bitrate_mask mask;
7557         int rem, i;
7558         struct net_device *dev = info->user_ptr[1];
7559         struct nlattr *tx_rates;
7560         struct ieee80211_supported_band *sband;
7561         u16 vht_tx_mcs_map;
7562
7563         if (!rdev->ops->set_bitrate_mask)
7564                 return -EOPNOTSUPP;
7565
7566         memset(&mask, 0, sizeof(mask));
7567         /* Default to all rates enabled */
7568         for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
7569                 sband = rdev->wiphy.bands[i];
7570
7571                 if (!sband)
7572                         continue;
7573
7574                 mask.control[i].legacy = (1 << sband->n_bitrates) - 1;
7575                 memcpy(mask.control[i].ht_mcs,
7576                        sband->ht_cap.mcs.rx_mask,
7577                        sizeof(mask.control[i].ht_mcs));
7578
7579                 if (!sband->vht_cap.vht_supported)
7580                         continue;
7581
7582                 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
7583                 vht_build_mcs_mask(vht_tx_mcs_map, mask.control[i].vht_mcs);
7584         }
7585
7586         /* if no rates are given set it back to the defaults */
7587         if (!info->attrs[NL80211_ATTR_TX_RATES])
7588                 goto out;
7589
7590         /*
7591          * The nested attribute uses enum nl80211_band as the index. This maps
7592          * directly to the enum ieee80211_band values used in cfg80211.
7593          */
7594         BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
7595         nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) {
7596                 enum ieee80211_band band = nla_type(tx_rates);
7597                 int err;
7598
7599                 if (band < 0 || band >= IEEE80211_NUM_BANDS)
7600                         return -EINVAL;
7601                 sband = rdev->wiphy.bands[band];
7602                 if (sband == NULL)
7603                         return -EINVAL;
7604                 err = nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
7605                                 nla_len(tx_rates), nl80211_txattr_policy);
7606                 if (err)
7607                         return err;
7608                 if (tb[NL80211_TXRATE_LEGACY]) {
7609                         mask.control[band].legacy = rateset_to_mask(
7610                                 sband,
7611                                 nla_data(tb[NL80211_TXRATE_LEGACY]),
7612                                 nla_len(tb[NL80211_TXRATE_LEGACY]));
7613                         if ((mask.control[band].legacy == 0) &&
7614                             nla_len(tb[NL80211_TXRATE_LEGACY]))
7615                                 return -EINVAL;
7616                 }
7617                 if (tb[NL80211_TXRATE_HT]) {
7618                         if (!ht_rateset_to_mask(
7619                                         sband,
7620                                         nla_data(tb[NL80211_TXRATE_HT]),
7621                                         nla_len(tb[NL80211_TXRATE_HT]),
7622                                         mask.control[band].ht_mcs))
7623                                 return -EINVAL;
7624                 }
7625                 if (tb[NL80211_TXRATE_VHT]) {
7626                         if (!vht_set_mcs_mask(
7627                                         sband,
7628                                         nla_data(tb[NL80211_TXRATE_VHT]),
7629                                         mask.control[band].vht_mcs))
7630                                 return -EINVAL;
7631                 }
7632                 if (tb[NL80211_TXRATE_GI]) {
7633                         mask.control[band].gi =
7634                                 nla_get_u8(tb[NL80211_TXRATE_GI]);
7635                         if (mask.control[band].gi > NL80211_TXRATE_FORCE_LGI)
7636                                 return -EINVAL;
7637                 }
7638
7639                 if (mask.control[band].legacy == 0) {
7640                         /* don't allow empty legacy rates if HT or VHT
7641                          * are not even supported.
7642                          */
7643                         if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
7644                               rdev->wiphy.bands[band]->vht_cap.vht_supported))
7645                                 return -EINVAL;
7646
7647                         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
7648                                 if (mask.control[band].ht_mcs[i])
7649                                         goto out;
7650
7651                         for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
7652                                 if (mask.control[band].vht_mcs[i])
7653                                         goto out;
7654
7655                         /* legacy and mcs rates may not be both empty */
7656                         return -EINVAL;
7657                 }
7658         }
7659
7660 out:
7661         return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
7662 }
7663
7664 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
7665 {
7666         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7667         struct wireless_dev *wdev = info->user_ptr[1];
7668         u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
7669
7670         if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
7671                 return -EINVAL;
7672
7673         if (info->attrs[NL80211_ATTR_FRAME_TYPE])
7674                 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
7675
7676         switch (wdev->iftype) {
7677         case NL80211_IFTYPE_STATION:
7678         case NL80211_IFTYPE_ADHOC:
7679         case NL80211_IFTYPE_P2P_CLIENT:
7680         case NL80211_IFTYPE_AP:
7681         case NL80211_IFTYPE_AP_VLAN:
7682         case NL80211_IFTYPE_MESH_POINT:
7683         case NL80211_IFTYPE_P2P_GO:
7684         case NL80211_IFTYPE_P2P_DEVICE:
7685                 break;
7686         default:
7687                 return -EOPNOTSUPP;
7688         }
7689
7690         /* not much point in registering if we can't reply */
7691         if (!rdev->ops->mgmt_tx)
7692                 return -EOPNOTSUPP;
7693
7694         return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
7695                         nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
7696                         nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
7697 }
7698
7699 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
7700 {
7701         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7702         struct wireless_dev *wdev = info->user_ptr[1];
7703         struct cfg80211_chan_def chandef;
7704         int err;
7705         void *hdr = NULL;
7706         u64 cookie;
7707         struct sk_buff *msg = NULL;
7708         struct cfg80211_mgmt_tx_params params = {
7709                 .dont_wait_for_ack =
7710                         info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
7711         };
7712
7713         if (!info->attrs[NL80211_ATTR_FRAME])
7714                 return -EINVAL;
7715
7716         if (!rdev->ops->mgmt_tx)
7717                 return -EOPNOTSUPP;
7718
7719         switch (wdev->iftype) {
7720         case NL80211_IFTYPE_P2P_DEVICE:
7721                 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
7722                         return -EINVAL;
7723         case NL80211_IFTYPE_STATION:
7724         case NL80211_IFTYPE_ADHOC:
7725         case NL80211_IFTYPE_P2P_CLIENT:
7726         case NL80211_IFTYPE_AP:
7727         case NL80211_IFTYPE_AP_VLAN:
7728         case NL80211_IFTYPE_MESH_POINT:
7729         case NL80211_IFTYPE_P2P_GO:
7730                 break;
7731         default:
7732                 return -EOPNOTSUPP;
7733         }
7734
7735         if (info->attrs[NL80211_ATTR_DURATION]) {
7736                 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
7737                         return -EINVAL;
7738                 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
7739
7740                 /*
7741                  * We should wait on the channel for at least a minimum amount
7742                  * of time (10ms) but no longer than the driver supports.
7743                  */
7744                 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
7745                     params.wait > rdev->wiphy.max_remain_on_channel_duration)
7746                         return -EINVAL;
7747
7748         }
7749
7750         params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
7751
7752         if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
7753                 return -EINVAL;
7754
7755         params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
7756
7757         /* get the channel if any has been specified, otherwise pass NULL to
7758          * the driver. The latter will use the current one
7759          */
7760         chandef.chan = NULL;
7761         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
7762                 err = nl80211_parse_chandef(rdev, info, &chandef);
7763                 if (err)
7764                         return err;
7765         }
7766
7767         if (!chandef.chan && params.offchan)
7768                 return -EINVAL;
7769
7770         if (!params.dont_wait_for_ack) {
7771                 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7772                 if (!msg)
7773                         return -ENOMEM;
7774
7775                 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7776                                      NL80211_CMD_FRAME);
7777                 if (!hdr) {
7778                         err = -ENOBUFS;
7779                         goto free_msg;
7780                 }
7781         }
7782
7783         params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
7784         params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
7785         params.chan = chandef.chan;
7786         err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
7787         if (err)
7788                 goto free_msg;
7789
7790         if (msg) {
7791                 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
7792                         goto nla_put_failure;
7793
7794                 genlmsg_end(msg, hdr);
7795                 return genlmsg_reply(msg, info);
7796         }
7797
7798         return 0;
7799
7800  nla_put_failure:
7801         err = -ENOBUFS;
7802  free_msg:
7803         nlmsg_free(msg);
7804         return err;
7805 }
7806
7807 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
7808 {
7809         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7810         struct wireless_dev *wdev = info->user_ptr[1];
7811         u64 cookie;
7812
7813         if (!info->attrs[NL80211_ATTR_COOKIE])
7814                 return -EINVAL;
7815
7816         if (!rdev->ops->mgmt_tx_cancel_wait)
7817                 return -EOPNOTSUPP;
7818
7819         switch (wdev->iftype) {
7820         case NL80211_IFTYPE_STATION:
7821         case NL80211_IFTYPE_ADHOC:
7822         case NL80211_IFTYPE_P2P_CLIENT:
7823         case NL80211_IFTYPE_AP:
7824         case NL80211_IFTYPE_AP_VLAN:
7825         case NL80211_IFTYPE_P2P_GO:
7826         case NL80211_IFTYPE_P2P_DEVICE:
7827                 break;
7828         default:
7829                 return -EOPNOTSUPP;
7830         }
7831
7832         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
7833
7834         return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
7835 }
7836
7837 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
7838 {
7839         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7840         struct wireless_dev *wdev;
7841         struct net_device *dev = info->user_ptr[1];
7842         u8 ps_state;
7843         bool state;
7844         int err;
7845
7846         if (!info->attrs[NL80211_ATTR_PS_STATE])
7847                 return -EINVAL;
7848
7849         ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
7850
7851         if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
7852                 return -EINVAL;
7853
7854         wdev = dev->ieee80211_ptr;
7855
7856         if (!rdev->ops->set_power_mgmt)
7857                 return -EOPNOTSUPP;
7858
7859         state = (ps_state == NL80211_PS_ENABLED) ? true : false;
7860
7861         if (state == wdev->ps)
7862                 return 0;
7863
7864         err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
7865         if (!err)
7866                 wdev->ps = state;
7867         return err;
7868 }
7869
7870 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
7871 {
7872         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7873         enum nl80211_ps_state ps_state;
7874         struct wireless_dev *wdev;
7875         struct net_device *dev = info->user_ptr[1];
7876         struct sk_buff *msg;
7877         void *hdr;
7878         int err;
7879
7880         wdev = dev->ieee80211_ptr;
7881
7882         if (!rdev->ops->set_power_mgmt)
7883                 return -EOPNOTSUPP;
7884
7885         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7886         if (!msg)
7887                 return -ENOMEM;
7888
7889         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7890                              NL80211_CMD_GET_POWER_SAVE);
7891         if (!hdr) {
7892                 err = -ENOBUFS;
7893                 goto free_msg;
7894         }
7895
7896         if (wdev->ps)
7897                 ps_state = NL80211_PS_ENABLED;
7898         else
7899                 ps_state = NL80211_PS_DISABLED;
7900
7901         if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
7902                 goto nla_put_failure;
7903
7904         genlmsg_end(msg, hdr);
7905         return genlmsg_reply(msg, info);
7906
7907  nla_put_failure:
7908         err = -ENOBUFS;
7909  free_msg:
7910         nlmsg_free(msg);
7911         return err;
7912 }
7913
7914 static const struct nla_policy
7915 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
7916         [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
7917         [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
7918         [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
7919         [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
7920         [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
7921         [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
7922 };
7923
7924 static int nl80211_set_cqm_txe(struct genl_info *info,
7925                                u32 rate, u32 pkts, u32 intvl)
7926 {
7927         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7928         struct net_device *dev = info->user_ptr[1];
7929         struct wireless_dev *wdev = dev->ieee80211_ptr;
7930
7931         if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
7932                 return -EINVAL;
7933
7934         if (!rdev->ops->set_cqm_txe_config)
7935                 return -EOPNOTSUPP;
7936
7937         if (wdev->iftype != NL80211_IFTYPE_STATION &&
7938             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
7939                 return -EOPNOTSUPP;
7940
7941         return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
7942 }
7943
7944 static int nl80211_set_cqm_rssi(struct genl_info *info,
7945                                 s32 threshold, u32 hysteresis)
7946 {
7947         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7948         struct net_device *dev = info->user_ptr[1];
7949         struct wireless_dev *wdev = dev->ieee80211_ptr;
7950
7951         if (threshold > 0)
7952                 return -EINVAL;
7953
7954         /* disabling - hysteresis should also be zero then */
7955         if (threshold == 0)
7956                 hysteresis = 0;
7957
7958         if (!rdev->ops->set_cqm_rssi_config)
7959                 return -EOPNOTSUPP;
7960
7961         if (wdev->iftype != NL80211_IFTYPE_STATION &&
7962             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
7963                 return -EOPNOTSUPP;
7964
7965         return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis);
7966 }
7967
7968 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
7969 {
7970         struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
7971         struct nlattr *cqm;
7972         int err;
7973
7974         cqm = info->attrs[NL80211_ATTR_CQM];
7975         if (!cqm)
7976                 return -EINVAL;
7977
7978         err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
7979                                nl80211_attr_cqm_policy);
7980         if (err)
7981                 return err;
7982
7983         if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
7984             attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
7985                 s32 threshold = nla_get_s32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
7986                 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
7987
7988                 return nl80211_set_cqm_rssi(info, threshold, hysteresis);
7989         }
7990
7991         if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
7992             attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
7993             attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
7994                 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
7995                 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
7996                 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
7997
7998                 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
7999         }
8000
8001         return -EINVAL;
8002 }
8003
8004 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
8005 {
8006         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8007         struct net_device *dev = info->user_ptr[1];
8008         struct mesh_config cfg;
8009         struct mesh_setup setup;
8010         int err;
8011
8012         /* start with default */
8013         memcpy(&cfg, &default_mesh_config, sizeof(cfg));
8014         memcpy(&setup, &default_mesh_setup, sizeof(setup));
8015
8016         if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
8017                 /* and parse parameters if given */
8018                 err = nl80211_parse_mesh_config(info, &cfg, NULL);
8019                 if (err)
8020                         return err;
8021         }
8022
8023         if (!info->attrs[NL80211_ATTR_MESH_ID] ||
8024             !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
8025                 return -EINVAL;
8026
8027         setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
8028         setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
8029
8030         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
8031             !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
8032                             nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
8033                         return -EINVAL;
8034
8035         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
8036                 setup.beacon_interval =
8037                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
8038                 if (setup.beacon_interval < 10 ||
8039                     setup.beacon_interval > 10000)
8040                         return -EINVAL;
8041         }
8042
8043         if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
8044                 setup.dtim_period =
8045                         nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
8046                 if (setup.dtim_period < 1 || setup.dtim_period > 100)
8047                         return -EINVAL;
8048         }
8049
8050         if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
8051                 /* parse additional setup parameters if given */
8052                 err = nl80211_parse_mesh_setup(info, &setup);
8053                 if (err)
8054                         return err;
8055         }
8056
8057         if (setup.user_mpm)
8058                 cfg.auto_open_plinks = false;
8059
8060         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
8061                 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
8062                 if (err)
8063                         return err;
8064         } else {
8065                 /* cfg80211_join_mesh() will sort it out */
8066                 setup.chandef.chan = NULL;
8067         }
8068
8069         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
8070                 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8071                 int n_rates =
8072                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8073                 struct ieee80211_supported_band *sband;
8074
8075                 if (!setup.chandef.chan)
8076                         return -EINVAL;
8077
8078                 sband = rdev->wiphy.bands[setup.chandef.chan->band];
8079
8080                 err = ieee80211_get_ratemask(sband, rates, n_rates,
8081                                              &setup.basic_rates);
8082                 if (err)
8083                         return err;
8084         }
8085
8086         return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
8087 }
8088
8089 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
8090 {
8091         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8092         struct net_device *dev = info->user_ptr[1];
8093
8094         return cfg80211_leave_mesh(rdev, dev);
8095 }
8096
8097 #ifdef CONFIG_PM
8098 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
8099                                         struct cfg80211_registered_device *rdev)
8100 {
8101         struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
8102         struct nlattr *nl_pats, *nl_pat;
8103         int i, pat_len;
8104
8105         if (!wowlan->n_patterns)
8106                 return 0;
8107
8108         nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
8109         if (!nl_pats)
8110                 return -ENOBUFS;
8111
8112         for (i = 0; i < wowlan->n_patterns; i++) {
8113                 nl_pat = nla_nest_start(msg, i + 1);
8114                 if (!nl_pat)
8115                         return -ENOBUFS;
8116                 pat_len = wowlan->patterns[i].pattern_len;
8117                 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
8118                             wowlan->patterns[i].mask) ||
8119                     nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
8120                             wowlan->patterns[i].pattern) ||
8121                     nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
8122                                 wowlan->patterns[i].pkt_offset))
8123                         return -ENOBUFS;
8124                 nla_nest_end(msg, nl_pat);
8125         }
8126         nla_nest_end(msg, nl_pats);
8127
8128         return 0;
8129 }
8130
8131 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
8132                                    struct cfg80211_wowlan_tcp *tcp)
8133 {
8134         struct nlattr *nl_tcp;
8135
8136         if (!tcp)
8137                 return 0;
8138
8139         nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
8140         if (!nl_tcp)
8141                 return -ENOBUFS;
8142
8143         if (nla_put_be32(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
8144             nla_put_be32(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
8145             nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
8146             nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
8147             nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
8148             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
8149                     tcp->payload_len, tcp->payload) ||
8150             nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
8151                         tcp->data_interval) ||
8152             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
8153                     tcp->wake_len, tcp->wake_data) ||
8154             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
8155                     DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
8156                 return -ENOBUFS;
8157
8158         if (tcp->payload_seq.len &&
8159             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
8160                     sizeof(tcp->payload_seq), &tcp->payload_seq))
8161                 return -ENOBUFS;
8162
8163         if (tcp->payload_tok.len &&
8164             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
8165                     sizeof(tcp->payload_tok) + tcp->tokens_size,
8166                     &tcp->payload_tok))
8167                 return -ENOBUFS;
8168
8169         nla_nest_end(msg, nl_tcp);
8170
8171         return 0;
8172 }
8173
8174 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
8175 {
8176         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8177         struct sk_buff *msg;
8178         void *hdr;
8179         u32 size = NLMSG_DEFAULT_SIZE;
8180
8181         if (!rdev->wiphy.wowlan)
8182                 return -EOPNOTSUPP;
8183
8184         if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
8185                 /* adjust size to have room for all the data */
8186                 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
8187                         rdev->wiphy.wowlan_config->tcp->payload_len +
8188                         rdev->wiphy.wowlan_config->tcp->wake_len +
8189                         rdev->wiphy.wowlan_config->tcp->wake_len / 8;
8190         }
8191
8192         msg = nlmsg_new(size, GFP_KERNEL);
8193         if (!msg)
8194                 return -ENOMEM;
8195
8196         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8197                              NL80211_CMD_GET_WOWLAN);
8198         if (!hdr)
8199                 goto nla_put_failure;
8200
8201         if (rdev->wiphy.wowlan_config) {
8202                 struct nlattr *nl_wowlan;
8203
8204                 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
8205                 if (!nl_wowlan)
8206                         goto nla_put_failure;
8207
8208                 if ((rdev->wiphy.wowlan_config->any &&
8209                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
8210                     (rdev->wiphy.wowlan_config->disconnect &&
8211                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
8212                     (rdev->wiphy.wowlan_config->magic_pkt &&
8213                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
8214                     (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
8215                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
8216                     (rdev->wiphy.wowlan_config->eap_identity_req &&
8217                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
8218                     (rdev->wiphy.wowlan_config->four_way_handshake &&
8219                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
8220                     (rdev->wiphy.wowlan_config->rfkill_release &&
8221                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
8222                         goto nla_put_failure;
8223
8224                 if (nl80211_send_wowlan_patterns(msg, rdev))
8225                         goto nla_put_failure;
8226
8227                 if (nl80211_send_wowlan_tcp(msg,
8228                                             rdev->wiphy.wowlan_config->tcp))
8229                         goto nla_put_failure;
8230
8231                 nla_nest_end(msg, nl_wowlan);
8232         }
8233
8234         genlmsg_end(msg, hdr);
8235         return genlmsg_reply(msg, info);
8236
8237 nla_put_failure:
8238         nlmsg_free(msg);
8239         return -ENOBUFS;
8240 }
8241
8242 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
8243                                     struct nlattr *attr,
8244                                     struct cfg80211_wowlan *trig)
8245 {
8246         struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
8247         struct cfg80211_wowlan_tcp *cfg;
8248         struct nl80211_wowlan_tcp_data_token *tok = NULL;
8249         struct nl80211_wowlan_tcp_data_seq *seq = NULL;
8250         u32 size;
8251         u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
8252         int err, port;
8253
8254         if (!rdev->wiphy.wowlan->tcp)
8255                 return -EINVAL;
8256
8257         err = nla_parse(tb, MAX_NL80211_WOWLAN_TCP,
8258                         nla_data(attr), nla_len(attr),
8259                         nl80211_wowlan_tcp_policy);
8260         if (err)
8261                 return err;
8262
8263         if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
8264             !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
8265             !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
8266             !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
8267             !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
8268             !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
8269             !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
8270             !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
8271                 return -EINVAL;
8272
8273         data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
8274         if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
8275                 return -EINVAL;
8276
8277         if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
8278                         rdev->wiphy.wowlan->tcp->data_interval_max ||
8279             nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
8280                 return -EINVAL;
8281
8282         wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
8283         if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
8284                 return -EINVAL;
8285
8286         wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
8287         if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
8288                 return -EINVAL;
8289
8290         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
8291                 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
8292
8293                 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
8294                 tokens_size = tokln - sizeof(*tok);
8295
8296                 if (!tok->len || tokens_size % tok->len)
8297                         return -EINVAL;
8298                 if (!rdev->wiphy.wowlan->tcp->tok)
8299                         return -EINVAL;
8300                 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
8301                         return -EINVAL;
8302                 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
8303                         return -EINVAL;
8304                 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
8305                         return -EINVAL;
8306                 if (tok->offset + tok->len > data_size)
8307                         return -EINVAL;
8308         }
8309
8310         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
8311                 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
8312                 if (!rdev->wiphy.wowlan->tcp->seq)
8313                         return -EINVAL;
8314                 if (seq->len == 0 || seq->len > 4)
8315                         return -EINVAL;
8316                 if (seq->len + seq->offset > data_size)
8317                         return -EINVAL;
8318         }
8319
8320         size = sizeof(*cfg);
8321         size += data_size;
8322         size += wake_size + wake_mask_size;
8323         size += tokens_size;
8324
8325         cfg = kzalloc(size, GFP_KERNEL);
8326         if (!cfg)
8327                 return -ENOMEM;
8328         cfg->src = nla_get_be32(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
8329         cfg->dst = nla_get_be32(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
8330         memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
8331                ETH_ALEN);
8332         if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
8333                 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
8334         else
8335                 port = 0;
8336 #ifdef CONFIG_INET
8337         /* allocate a socket and port for it and use it */
8338         err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
8339                             IPPROTO_TCP, &cfg->sock, 1);
8340         if (err) {
8341                 kfree(cfg);
8342                 return err;
8343         }
8344         if (inet_csk_get_port(cfg->sock->sk, port)) {
8345                 sock_release(cfg->sock);
8346                 kfree(cfg);
8347                 return -EADDRINUSE;
8348         }
8349         cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
8350 #else
8351         if (!port) {
8352                 kfree(cfg);
8353                 return -EINVAL;
8354         }
8355         cfg->src_port = port;
8356 #endif
8357
8358         cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
8359         cfg->payload_len = data_size;
8360         cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
8361         memcpy((void *)cfg->payload,
8362                nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
8363                data_size);
8364         if (seq)
8365                 cfg->payload_seq = *seq;
8366         cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
8367         cfg->wake_len = wake_size;
8368         cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
8369         memcpy((void *)cfg->wake_data,
8370                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
8371                wake_size);
8372         cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
8373                          data_size + wake_size;
8374         memcpy((void *)cfg->wake_mask,
8375                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
8376                wake_mask_size);
8377         if (tok) {
8378                 cfg->tokens_size = tokens_size;
8379                 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
8380         }
8381
8382         trig->tcp = cfg;
8383
8384         return 0;
8385 }
8386
8387 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
8388 {
8389         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8390         struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
8391         struct cfg80211_wowlan new_triggers = {};
8392         struct cfg80211_wowlan *ntrig;
8393         const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
8394         int err, i;
8395         bool prev_enabled = rdev->wiphy.wowlan_config;
8396
8397         if (!wowlan)
8398                 return -EOPNOTSUPP;
8399
8400         if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
8401                 cfg80211_rdev_free_wowlan(rdev);
8402                 rdev->wiphy.wowlan_config = NULL;
8403                 goto set_wakeup;
8404         }
8405
8406         err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
8407                         nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
8408                         nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
8409                         nl80211_wowlan_policy);
8410         if (err)
8411                 return err;
8412
8413         if (tb[NL80211_WOWLAN_TRIG_ANY]) {
8414                 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
8415                         return -EINVAL;
8416                 new_triggers.any = true;
8417         }
8418
8419         if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
8420                 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
8421                         return -EINVAL;
8422                 new_triggers.disconnect = true;
8423         }
8424
8425         if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
8426                 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
8427                         return -EINVAL;
8428                 new_triggers.magic_pkt = true;
8429         }
8430
8431         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
8432                 return -EINVAL;
8433
8434         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
8435                 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
8436                         return -EINVAL;
8437                 new_triggers.gtk_rekey_failure = true;
8438         }
8439
8440         if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
8441                 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
8442                         return -EINVAL;
8443                 new_triggers.eap_identity_req = true;
8444         }
8445
8446         if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
8447                 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
8448                         return -EINVAL;
8449                 new_triggers.four_way_handshake = true;
8450         }
8451
8452         if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
8453                 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
8454                         return -EINVAL;
8455                 new_triggers.rfkill_release = true;
8456         }
8457
8458         if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
8459                 struct nlattr *pat;
8460                 int n_patterns = 0;
8461                 int rem, pat_len, mask_len, pkt_offset;
8462                 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
8463
8464                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
8465                                     rem)
8466                         n_patterns++;
8467                 if (n_patterns > wowlan->n_patterns)
8468                         return -EINVAL;
8469
8470                 new_triggers.patterns = kcalloc(n_patterns,
8471                                                 sizeof(new_triggers.patterns[0]),
8472                                                 GFP_KERNEL);
8473                 if (!new_triggers.patterns)
8474                         return -ENOMEM;
8475
8476                 new_triggers.n_patterns = n_patterns;
8477                 i = 0;
8478
8479                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
8480                                     rem) {
8481                         nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
8482                                   nla_len(pat), NULL);
8483                         err = -EINVAL;
8484                         if (!pat_tb[NL80211_PKTPAT_MASK] ||
8485                             !pat_tb[NL80211_PKTPAT_PATTERN])
8486                                 goto error;
8487                         pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
8488                         mask_len = DIV_ROUND_UP(pat_len, 8);
8489                         if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
8490                                 goto error;
8491                         if (pat_len > wowlan->pattern_max_len ||
8492                             pat_len < wowlan->pattern_min_len)
8493                                 goto error;
8494
8495                         if (!pat_tb[NL80211_PKTPAT_OFFSET])
8496                                 pkt_offset = 0;
8497                         else
8498                                 pkt_offset = nla_get_u32(
8499                                         pat_tb[NL80211_PKTPAT_OFFSET]);
8500                         if (pkt_offset > wowlan->max_pkt_offset)
8501                                 goto error;
8502                         new_triggers.patterns[i].pkt_offset = pkt_offset;
8503
8504                         new_triggers.patterns[i].mask =
8505                                 kmalloc(mask_len + pat_len, GFP_KERNEL);
8506                         if (!new_triggers.patterns[i].mask) {
8507                                 err = -ENOMEM;
8508                                 goto error;
8509                         }
8510                         new_triggers.patterns[i].pattern =
8511                                 new_triggers.patterns[i].mask + mask_len;
8512                         memcpy(new_triggers.patterns[i].mask,
8513                                nla_data(pat_tb[NL80211_PKTPAT_MASK]),
8514                                mask_len);
8515                         new_triggers.patterns[i].pattern_len = pat_len;
8516                         memcpy(new_triggers.patterns[i].pattern,
8517                                nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
8518                                pat_len);
8519                         i++;
8520                 }
8521         }
8522
8523         if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
8524                 err = nl80211_parse_wowlan_tcp(
8525                         rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
8526                         &new_triggers);
8527                 if (err)
8528                         goto error;
8529         }
8530
8531         ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
8532         if (!ntrig) {
8533                 err = -ENOMEM;
8534                 goto error;
8535         }
8536         cfg80211_rdev_free_wowlan(rdev);
8537         rdev->wiphy.wowlan_config = ntrig;
8538
8539  set_wakeup:
8540         if (rdev->ops->set_wakeup &&
8541             prev_enabled != !!rdev->wiphy.wowlan_config)
8542                 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
8543
8544         return 0;
8545  error:
8546         for (i = 0; i < new_triggers.n_patterns; i++)
8547                 kfree(new_triggers.patterns[i].mask);
8548         kfree(new_triggers.patterns);
8549         if (new_triggers.tcp && new_triggers.tcp->sock)
8550                 sock_release(new_triggers.tcp->sock);
8551         kfree(new_triggers.tcp);
8552         return err;
8553 }
8554 #endif
8555
8556 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
8557                                        struct cfg80211_registered_device *rdev)
8558 {
8559         struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
8560         int i, j, pat_len;
8561         struct cfg80211_coalesce_rules *rule;
8562
8563         if (!rdev->coalesce->n_rules)
8564                 return 0;
8565
8566         nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE);
8567         if (!nl_rules)
8568                 return -ENOBUFS;
8569
8570         for (i = 0; i < rdev->coalesce->n_rules; i++) {
8571                 nl_rule = nla_nest_start(msg, i + 1);
8572                 if (!nl_rule)
8573                         return -ENOBUFS;
8574
8575                 rule = &rdev->coalesce->rules[i];
8576                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
8577                                 rule->delay))
8578                         return -ENOBUFS;
8579
8580                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
8581                                 rule->condition))
8582                         return -ENOBUFS;
8583
8584                 nl_pats = nla_nest_start(msg,
8585                                 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
8586                 if (!nl_pats)
8587                         return -ENOBUFS;
8588
8589                 for (j = 0; j < rule->n_patterns; j++) {
8590                         nl_pat = nla_nest_start(msg, j + 1);
8591                         if (!nl_pat)
8592                                 return -ENOBUFS;
8593                         pat_len = rule->patterns[j].pattern_len;
8594                         if (nla_put(msg, NL80211_PKTPAT_MASK,
8595                                     DIV_ROUND_UP(pat_len, 8),
8596                                     rule->patterns[j].mask) ||
8597                             nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
8598                                     rule->patterns[j].pattern) ||
8599                             nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
8600                                         rule->patterns[j].pkt_offset))
8601                                 return -ENOBUFS;
8602                         nla_nest_end(msg, nl_pat);
8603                 }
8604                 nla_nest_end(msg, nl_pats);
8605                 nla_nest_end(msg, nl_rule);
8606         }
8607         nla_nest_end(msg, nl_rules);
8608
8609         return 0;
8610 }
8611
8612 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
8613 {
8614         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8615         struct sk_buff *msg;
8616         void *hdr;
8617
8618         if (!rdev->wiphy.coalesce)
8619                 return -EOPNOTSUPP;
8620
8621         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8622         if (!msg)
8623                 return -ENOMEM;
8624
8625         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8626                              NL80211_CMD_GET_COALESCE);
8627         if (!hdr)
8628                 goto nla_put_failure;
8629
8630         if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
8631                 goto nla_put_failure;
8632
8633         genlmsg_end(msg, hdr);
8634         return genlmsg_reply(msg, info);
8635
8636 nla_put_failure:
8637         nlmsg_free(msg);
8638         return -ENOBUFS;
8639 }
8640
8641 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
8642 {
8643         struct cfg80211_coalesce *coalesce = rdev->coalesce;
8644         int i, j;
8645         struct cfg80211_coalesce_rules *rule;
8646
8647         if (!coalesce)
8648                 return;
8649
8650         for (i = 0; i < coalesce->n_rules; i++) {
8651                 rule = &coalesce->rules[i];
8652                 for (j = 0; j < rule->n_patterns; j++)
8653                         kfree(rule->patterns[j].mask);
8654                 kfree(rule->patterns);
8655         }
8656         kfree(coalesce->rules);
8657         kfree(coalesce);
8658         rdev->coalesce = NULL;
8659 }
8660
8661 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
8662                                        struct nlattr *rule,
8663                                        struct cfg80211_coalesce_rules *new_rule)
8664 {
8665         int err, i;
8666         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
8667         struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
8668         int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
8669         struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
8670
8671         err = nla_parse(tb, NL80211_ATTR_COALESCE_RULE_MAX, nla_data(rule),
8672                         nla_len(rule), nl80211_coalesce_policy);
8673         if (err)
8674                 return err;
8675
8676         if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
8677                 new_rule->delay =
8678                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
8679         if (new_rule->delay > coalesce->max_delay)
8680                 return -EINVAL;
8681
8682         if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
8683                 new_rule->condition =
8684                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
8685         if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH &&
8686             new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH)
8687                 return -EINVAL;
8688
8689         if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
8690                 return -EINVAL;
8691
8692         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
8693                             rem)
8694                 n_patterns++;
8695         if (n_patterns > coalesce->n_patterns)
8696                 return -EINVAL;
8697
8698         new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
8699                                      GFP_KERNEL);
8700         if (!new_rule->patterns)
8701                 return -ENOMEM;
8702
8703         new_rule->n_patterns = n_patterns;
8704         i = 0;
8705
8706         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
8707                             rem) {
8708                 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
8709                           nla_len(pat), NULL);
8710                 if (!pat_tb[NL80211_PKTPAT_MASK] ||
8711                     !pat_tb[NL80211_PKTPAT_PATTERN])
8712                         return -EINVAL;
8713                 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
8714                 mask_len = DIV_ROUND_UP(pat_len, 8);
8715                 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
8716                         return -EINVAL;
8717                 if (pat_len > coalesce->pattern_max_len ||
8718                     pat_len < coalesce->pattern_min_len)
8719                         return -EINVAL;
8720
8721                 if (!pat_tb[NL80211_PKTPAT_OFFSET])
8722                         pkt_offset = 0;
8723                 else
8724                         pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
8725                 if (pkt_offset > coalesce->max_pkt_offset)
8726                         return -EINVAL;
8727                 new_rule->patterns[i].pkt_offset = pkt_offset;
8728
8729                 new_rule->patterns[i].mask =
8730                         kmalloc(mask_len + pat_len, GFP_KERNEL);
8731                 if (!new_rule->patterns[i].mask)
8732                         return -ENOMEM;
8733                 new_rule->patterns[i].pattern =
8734                         new_rule->patterns[i].mask + mask_len;
8735                 memcpy(new_rule->patterns[i].mask,
8736                        nla_data(pat_tb[NL80211_PKTPAT_MASK]), mask_len);
8737                 new_rule->patterns[i].pattern_len = pat_len;
8738                 memcpy(new_rule->patterns[i].pattern,
8739                        nla_data(pat_tb[NL80211_PKTPAT_PATTERN]), pat_len);
8740                 i++;
8741         }
8742
8743         return 0;
8744 }
8745
8746 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
8747 {
8748         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8749         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
8750         struct cfg80211_coalesce new_coalesce = {};
8751         struct cfg80211_coalesce *n_coalesce;
8752         int err, rem_rule, n_rules = 0, i, j;
8753         struct nlattr *rule;
8754         struct cfg80211_coalesce_rules *tmp_rule;
8755
8756         if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
8757                 return -EOPNOTSUPP;
8758
8759         if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
8760                 cfg80211_rdev_free_coalesce(rdev);
8761                 rdev->ops->set_coalesce(&rdev->wiphy, NULL);
8762                 return 0;
8763         }
8764
8765         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
8766                             rem_rule)
8767                 n_rules++;
8768         if (n_rules > coalesce->n_rules)
8769                 return -EINVAL;
8770
8771         new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
8772                                      GFP_KERNEL);
8773         if (!new_coalesce.rules)
8774                 return -ENOMEM;
8775
8776         new_coalesce.n_rules = n_rules;
8777         i = 0;
8778
8779         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
8780                             rem_rule) {
8781                 err = nl80211_parse_coalesce_rule(rdev, rule,
8782                                                   &new_coalesce.rules[i]);
8783                 if (err)
8784                         goto error;
8785
8786                 i++;
8787         }
8788
8789         err = rdev->ops->set_coalesce(&rdev->wiphy, &new_coalesce);
8790         if (err)
8791                 goto error;
8792
8793         n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
8794         if (!n_coalesce) {
8795                 err = -ENOMEM;
8796                 goto error;
8797         }
8798         cfg80211_rdev_free_coalesce(rdev);
8799         rdev->coalesce = n_coalesce;
8800
8801         return 0;
8802 error:
8803         for (i = 0; i < new_coalesce.n_rules; i++) {
8804                 tmp_rule = &new_coalesce.rules[i];
8805                 for (j = 0; j < tmp_rule->n_patterns; j++)
8806                         kfree(tmp_rule->patterns[j].mask);
8807                 kfree(tmp_rule->patterns);
8808         }
8809         kfree(new_coalesce.rules);
8810
8811         return err;
8812 }
8813
8814 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
8815 {
8816         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8817         struct net_device *dev = info->user_ptr[1];
8818         struct wireless_dev *wdev = dev->ieee80211_ptr;
8819         struct nlattr *tb[NUM_NL80211_REKEY_DATA];
8820         struct cfg80211_gtk_rekey_data rekey_data;
8821         int err;
8822
8823         if (!info->attrs[NL80211_ATTR_REKEY_DATA])
8824                 return -EINVAL;
8825
8826         err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
8827                         nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
8828                         nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
8829                         nl80211_rekey_policy);
8830         if (err)
8831                 return err;
8832
8833         if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
8834                 return -ERANGE;
8835         if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
8836                 return -ERANGE;
8837         if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
8838                 return -ERANGE;
8839
8840         memcpy(rekey_data.kek, nla_data(tb[NL80211_REKEY_DATA_KEK]),
8841                NL80211_KEK_LEN);
8842         memcpy(rekey_data.kck, nla_data(tb[NL80211_REKEY_DATA_KCK]),
8843                NL80211_KCK_LEN);
8844         memcpy(rekey_data.replay_ctr,
8845                nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]),
8846                NL80211_REPLAY_CTR_LEN);
8847
8848         wdev_lock(wdev);
8849         if (!wdev->current_bss) {
8850                 err = -ENOTCONN;
8851                 goto out;
8852         }
8853
8854         if (!rdev->ops->set_rekey_data) {
8855                 err = -EOPNOTSUPP;
8856                 goto out;
8857         }
8858
8859         err = rdev_set_rekey_data(rdev, dev, &rekey_data);
8860  out:
8861         wdev_unlock(wdev);
8862         return err;
8863 }
8864
8865 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
8866                                              struct genl_info *info)
8867 {
8868         struct net_device *dev = info->user_ptr[1];
8869         struct wireless_dev *wdev = dev->ieee80211_ptr;
8870
8871         if (wdev->iftype != NL80211_IFTYPE_AP &&
8872             wdev->iftype != NL80211_IFTYPE_P2P_GO)
8873                 return -EINVAL;
8874
8875         if (wdev->ap_unexpected_nlportid)
8876                 return -EBUSY;
8877
8878         wdev->ap_unexpected_nlportid = info->snd_portid;
8879         return 0;
8880 }
8881
8882 static int nl80211_probe_client(struct sk_buff *skb,
8883                                 struct genl_info *info)
8884 {
8885         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8886         struct net_device *dev = info->user_ptr[1];
8887         struct wireless_dev *wdev = dev->ieee80211_ptr;
8888         struct sk_buff *msg;
8889         void *hdr;
8890         const u8 *addr;
8891         u64 cookie;
8892         int err;
8893
8894         if (wdev->iftype != NL80211_IFTYPE_AP &&
8895             wdev->iftype != NL80211_IFTYPE_P2P_GO)
8896                 return -EOPNOTSUPP;
8897
8898         if (!info->attrs[NL80211_ATTR_MAC])
8899                 return -EINVAL;
8900
8901         if (!rdev->ops->probe_client)
8902                 return -EOPNOTSUPP;
8903
8904         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8905         if (!msg)
8906                 return -ENOMEM;
8907
8908         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8909                              NL80211_CMD_PROBE_CLIENT);
8910         if (!hdr) {
8911                 err = -ENOBUFS;
8912                 goto free_msg;
8913         }
8914
8915         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
8916
8917         err = rdev_probe_client(rdev, dev, addr, &cookie);
8918         if (err)
8919                 goto free_msg;
8920
8921         if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
8922                 goto nla_put_failure;
8923
8924         genlmsg_end(msg, hdr);
8925
8926         return genlmsg_reply(msg, info);
8927
8928  nla_put_failure:
8929         err = -ENOBUFS;
8930  free_msg:
8931         nlmsg_free(msg);
8932         return err;
8933 }
8934
8935 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
8936 {
8937         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8938         struct cfg80211_beacon_registration *reg, *nreg;
8939         int rv;
8940
8941         if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
8942                 return -EOPNOTSUPP;
8943
8944         nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
8945         if (!nreg)
8946                 return -ENOMEM;
8947
8948         /* First, check if already registered. */
8949         spin_lock_bh(&rdev->beacon_registrations_lock);
8950         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
8951                 if (reg->nlportid == info->snd_portid) {
8952                         rv = -EALREADY;
8953                         goto out_err;
8954                 }
8955         }
8956         /* Add it to the list */
8957         nreg->nlportid = info->snd_portid;
8958         list_add(&nreg->list, &rdev->beacon_registrations);
8959
8960         spin_unlock_bh(&rdev->beacon_registrations_lock);
8961
8962         return 0;
8963 out_err:
8964         spin_unlock_bh(&rdev->beacon_registrations_lock);
8965         kfree(nreg);
8966         return rv;
8967 }
8968
8969 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
8970 {
8971         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8972         struct wireless_dev *wdev = info->user_ptr[1];
8973         int err;
8974
8975         if (!rdev->ops->start_p2p_device)
8976                 return -EOPNOTSUPP;
8977
8978         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
8979                 return -EOPNOTSUPP;
8980
8981         if (wdev->p2p_started)
8982                 return 0;
8983
8984         err = cfg80211_can_add_interface(rdev, wdev->iftype);
8985         if (err)
8986                 return err;
8987
8988         err = rdev_start_p2p_device(rdev, wdev);
8989         if (err)
8990                 return err;
8991
8992         wdev->p2p_started = true;
8993         rdev->opencount++;
8994
8995         return 0;
8996 }
8997
8998 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
8999 {
9000         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9001         struct wireless_dev *wdev = info->user_ptr[1];
9002
9003         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
9004                 return -EOPNOTSUPP;
9005
9006         if (!rdev->ops->stop_p2p_device)
9007                 return -EOPNOTSUPP;
9008
9009         cfg80211_stop_p2p_device(rdev, wdev);
9010
9011         return 0;
9012 }
9013
9014 static int nl80211_get_protocol_features(struct sk_buff *skb,
9015                                          struct genl_info *info)
9016 {
9017         void *hdr;
9018         struct sk_buff *msg;
9019
9020         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9021         if (!msg)
9022                 return -ENOMEM;
9023
9024         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9025                              NL80211_CMD_GET_PROTOCOL_FEATURES);
9026         if (!hdr)
9027                 goto nla_put_failure;
9028
9029         if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
9030                         NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
9031                 goto nla_put_failure;
9032
9033         genlmsg_end(msg, hdr);
9034         return genlmsg_reply(msg, info);
9035
9036  nla_put_failure:
9037         kfree_skb(msg);
9038         return -ENOBUFS;
9039 }
9040
9041 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
9042 {
9043         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9044         struct cfg80211_update_ft_ies_params ft_params;
9045         struct net_device *dev = info->user_ptr[1];
9046
9047         if (!rdev->ops->update_ft_ies)
9048                 return -EOPNOTSUPP;
9049
9050         if (!info->attrs[NL80211_ATTR_MDID] ||
9051             !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
9052                 return -EINVAL;
9053
9054         memset(&ft_params, 0, sizeof(ft_params));
9055         ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
9056         ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9057         ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9058
9059         return rdev_update_ft_ies(rdev, dev, &ft_params);
9060 }
9061
9062 static int nl80211_crit_protocol_start(struct sk_buff *skb,
9063                                        struct genl_info *info)
9064 {
9065         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9066         struct wireless_dev *wdev = info->user_ptr[1];
9067         enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
9068         u16 duration;
9069         int ret;
9070
9071         if (!rdev->ops->crit_proto_start)
9072                 return -EOPNOTSUPP;
9073
9074         if (WARN_ON(!rdev->ops->crit_proto_stop))
9075                 return -EINVAL;
9076
9077         if (rdev->crit_proto_nlportid)
9078                 return -EBUSY;
9079
9080         /* determine protocol if provided */
9081         if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
9082                 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
9083
9084         if (proto >= NUM_NL80211_CRIT_PROTO)
9085                 return -EINVAL;
9086
9087         /* timeout must be provided */
9088         if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
9089                 return -EINVAL;
9090
9091         duration =
9092                 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
9093
9094         if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
9095                 return -ERANGE;
9096
9097         ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
9098         if (!ret)
9099                 rdev->crit_proto_nlportid = info->snd_portid;
9100
9101         return ret;
9102 }
9103
9104 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
9105                                       struct genl_info *info)
9106 {
9107         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9108         struct wireless_dev *wdev = info->user_ptr[1];
9109
9110         if (!rdev->ops->crit_proto_stop)
9111                 return -EOPNOTSUPP;
9112
9113         if (rdev->crit_proto_nlportid) {
9114                 rdev->crit_proto_nlportid = 0;
9115                 rdev_crit_proto_stop(rdev, wdev);
9116         }
9117         return 0;
9118 }
9119
9120 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
9121 {
9122         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9123         struct wireless_dev *wdev =
9124                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
9125         int i, err;
9126         u32 vid, subcmd;
9127
9128         if (!rdev->wiphy.vendor_commands)
9129                 return -EOPNOTSUPP;
9130
9131         if (IS_ERR(wdev)) {
9132                 err = PTR_ERR(wdev);
9133                 if (err != -EINVAL)
9134                         return err;
9135                 wdev = NULL;
9136         } else if (wdev->wiphy != &rdev->wiphy) {
9137                 return -EINVAL;
9138         }
9139
9140         if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
9141             !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
9142                 return -EINVAL;
9143
9144         vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
9145         subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
9146         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
9147                 const struct wiphy_vendor_command *vcmd;
9148                 void *data = NULL;
9149                 int len = 0;
9150
9151                 vcmd = &rdev->wiphy.vendor_commands[i];
9152
9153                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
9154                         continue;
9155
9156                 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
9157                                    WIPHY_VENDOR_CMD_NEED_NETDEV)) {
9158                         if (!wdev)
9159                                 return -EINVAL;
9160                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
9161                             !wdev->netdev)
9162                                 return -EINVAL;
9163
9164                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
9165                                 if (wdev->netdev &&
9166                                     !netif_running(wdev->netdev))
9167                                         return -ENETDOWN;
9168                                 if (!wdev->netdev && !wdev->p2p_started)
9169                                         return -ENETDOWN;
9170                         }
9171                 } else {
9172                         wdev = NULL;
9173                 }
9174
9175                 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
9176                         data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
9177                         len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
9178                 }
9179
9180                 rdev->cur_cmd_info = info;
9181                 err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev,
9182                                                           data, len);
9183                 rdev->cur_cmd_info = NULL;
9184                 return err;
9185         }
9186
9187         return -EOPNOTSUPP;
9188 }
9189
9190 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
9191                                            enum nl80211_commands cmd,
9192                                            enum nl80211_attrs attr,
9193                                            int approxlen)
9194 {
9195         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
9196
9197         if (WARN_ON(!rdev->cur_cmd_info))
9198                 return NULL;
9199
9200         return __cfg80211_alloc_vendor_skb(rdev, approxlen,
9201                                            rdev->cur_cmd_info->snd_portid,
9202                                            rdev->cur_cmd_info->snd_seq,
9203                                            cmd, attr, NULL, GFP_KERNEL);
9204 }
9205 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
9206
9207 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
9208 {
9209         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
9210         void *hdr = ((void **)skb->cb)[1];
9211         struct nlattr *data = ((void **)skb->cb)[2];
9212
9213         if (WARN_ON(!rdev->cur_cmd_info)) {
9214                 kfree_skb(skb);
9215                 return -EINVAL;
9216         }
9217
9218         nla_nest_end(skb, data);
9219         genlmsg_end(skb, hdr);
9220         return genlmsg_reply(skb, rdev->cur_cmd_info);
9221 }
9222 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
9223
9224
9225 static int nl80211_set_qos_map(struct sk_buff *skb,
9226                                struct genl_info *info)
9227 {
9228         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9229         struct cfg80211_qos_map *qos_map = NULL;
9230         struct net_device *dev = info->user_ptr[1];
9231         u8 *pos, len, num_des, des_len, des;
9232         int ret;
9233
9234         if (!rdev->ops->set_qos_map)
9235                 return -EOPNOTSUPP;
9236
9237         if (info->attrs[NL80211_ATTR_QOS_MAP]) {
9238                 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
9239                 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
9240
9241                 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
9242                     len > IEEE80211_QOS_MAP_LEN_MAX)
9243                         return -EINVAL;
9244
9245                 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
9246                 if (!qos_map)
9247                         return -ENOMEM;
9248
9249                 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
9250                 if (num_des) {
9251                         des_len = num_des *
9252                                 sizeof(struct cfg80211_dscp_exception);
9253                         memcpy(qos_map->dscp_exception, pos, des_len);
9254                         qos_map->num_des = num_des;
9255                         for (des = 0; des < num_des; des++) {
9256                                 if (qos_map->dscp_exception[des].up > 7) {
9257                                         kfree(qos_map);
9258                                         return -EINVAL;
9259                                 }
9260                         }
9261                         pos += des_len;
9262                 }
9263                 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
9264         }
9265
9266         wdev_lock(dev->ieee80211_ptr);
9267         ret = nl80211_key_allowed(dev->ieee80211_ptr);
9268         if (!ret)
9269                 ret = rdev_set_qos_map(rdev, dev, qos_map);
9270         wdev_unlock(dev->ieee80211_ptr);
9271
9272         kfree(qos_map);
9273         return ret;
9274 }
9275
9276 #define NL80211_FLAG_NEED_WIPHY         0x01
9277 #define NL80211_FLAG_NEED_NETDEV        0x02
9278 #define NL80211_FLAG_NEED_RTNL          0x04
9279 #define NL80211_FLAG_CHECK_NETDEV_UP    0x08
9280 #define NL80211_FLAG_NEED_NETDEV_UP     (NL80211_FLAG_NEED_NETDEV |\
9281                                          NL80211_FLAG_CHECK_NETDEV_UP)
9282 #define NL80211_FLAG_NEED_WDEV          0x10
9283 /* If a netdev is associated, it must be UP, P2P must be started */
9284 #define NL80211_FLAG_NEED_WDEV_UP       (NL80211_FLAG_NEED_WDEV |\
9285                                          NL80211_FLAG_CHECK_NETDEV_UP)
9286
9287 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
9288                             struct genl_info *info)
9289 {
9290         struct cfg80211_registered_device *rdev;
9291         struct wireless_dev *wdev;
9292         struct net_device *dev;
9293         bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
9294
9295         if (rtnl)
9296                 rtnl_lock();
9297
9298         if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
9299                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
9300                 if (IS_ERR(rdev)) {
9301                         if (rtnl)
9302                                 rtnl_unlock();
9303                         return PTR_ERR(rdev);
9304                 }
9305                 info->user_ptr[0] = rdev;
9306         } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
9307                    ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
9308                 ASSERT_RTNL();
9309
9310                 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
9311                                                   info->attrs);
9312                 if (IS_ERR(wdev)) {
9313                         if (rtnl)
9314                                 rtnl_unlock();
9315                         return PTR_ERR(wdev);
9316                 }
9317
9318                 dev = wdev->netdev;
9319                 rdev = wiphy_to_dev(wdev->wiphy);
9320
9321                 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
9322                         if (!dev) {
9323                                 if (rtnl)
9324                                         rtnl_unlock();
9325                                 return -EINVAL;
9326                         }
9327
9328                         info->user_ptr[1] = dev;
9329                 } else {
9330                         info->user_ptr[1] = wdev;
9331                 }
9332
9333                 if (dev) {
9334                         if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
9335                             !netif_running(dev)) {
9336                                 if (rtnl)
9337                                         rtnl_unlock();
9338                                 return -ENETDOWN;
9339                         }
9340
9341                         dev_hold(dev);
9342                 } else if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP) {
9343                         if (!wdev->p2p_started) {
9344                                 if (rtnl)
9345                                         rtnl_unlock();
9346                                 return -ENETDOWN;
9347                         }
9348                 }
9349
9350                 info->user_ptr[0] = rdev;
9351         }
9352
9353         return 0;
9354 }
9355
9356 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
9357                               struct genl_info *info)
9358 {
9359         if (info->user_ptr[1]) {
9360                 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
9361                         struct wireless_dev *wdev = info->user_ptr[1];
9362
9363                         if (wdev->netdev)
9364                                 dev_put(wdev->netdev);
9365                 } else {
9366                         dev_put(info->user_ptr[1]);
9367                 }
9368         }
9369         if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
9370                 rtnl_unlock();
9371 }
9372
9373 static const struct genl_ops nl80211_ops[] = {
9374         {
9375                 .cmd = NL80211_CMD_GET_WIPHY,
9376                 .doit = nl80211_get_wiphy,
9377                 .dumpit = nl80211_dump_wiphy,
9378                 .done = nl80211_dump_wiphy_done,
9379                 .policy = nl80211_policy,
9380                 /* can be retrieved by unprivileged users */
9381                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9382                                   NL80211_FLAG_NEED_RTNL,
9383         },
9384         {
9385                 .cmd = NL80211_CMD_SET_WIPHY,
9386                 .doit = nl80211_set_wiphy,
9387                 .policy = nl80211_policy,
9388                 .flags = GENL_ADMIN_PERM,
9389                 .internal_flags = NL80211_FLAG_NEED_RTNL,
9390         },
9391         {
9392                 .cmd = NL80211_CMD_GET_INTERFACE,
9393                 .doit = nl80211_get_interface,
9394                 .dumpit = nl80211_dump_interface,
9395                 .policy = nl80211_policy,
9396                 /* can be retrieved by unprivileged users */
9397                 .internal_flags = NL80211_FLAG_NEED_WDEV |
9398                                   NL80211_FLAG_NEED_RTNL,
9399         },
9400         {
9401                 .cmd = NL80211_CMD_SET_INTERFACE,
9402                 .doit = nl80211_set_interface,
9403                 .policy = nl80211_policy,
9404                 .flags = GENL_ADMIN_PERM,
9405                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9406                                   NL80211_FLAG_NEED_RTNL,
9407         },
9408         {
9409                 .cmd = NL80211_CMD_NEW_INTERFACE,
9410                 .doit = nl80211_new_interface,
9411                 .policy = nl80211_policy,
9412                 .flags = GENL_ADMIN_PERM,
9413                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9414                                   NL80211_FLAG_NEED_RTNL,
9415         },
9416         {
9417                 .cmd = NL80211_CMD_DEL_INTERFACE,
9418                 .doit = nl80211_del_interface,
9419                 .policy = nl80211_policy,
9420                 .flags = GENL_ADMIN_PERM,
9421                 .internal_flags = NL80211_FLAG_NEED_WDEV |
9422                                   NL80211_FLAG_NEED_RTNL,
9423         },
9424         {
9425                 .cmd = NL80211_CMD_GET_KEY,
9426                 .doit = nl80211_get_key,
9427                 .policy = nl80211_policy,
9428                 .flags = GENL_ADMIN_PERM,
9429                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9430                                   NL80211_FLAG_NEED_RTNL,
9431         },
9432         {
9433                 .cmd = NL80211_CMD_SET_KEY,
9434                 .doit = nl80211_set_key,
9435                 .policy = nl80211_policy,
9436                 .flags = GENL_ADMIN_PERM,
9437                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9438                                   NL80211_FLAG_NEED_RTNL,
9439         },
9440         {
9441                 .cmd = NL80211_CMD_NEW_KEY,
9442                 .doit = nl80211_new_key,
9443                 .policy = nl80211_policy,
9444                 .flags = GENL_ADMIN_PERM,
9445                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9446                                   NL80211_FLAG_NEED_RTNL,
9447         },
9448         {
9449                 .cmd = NL80211_CMD_DEL_KEY,
9450                 .doit = nl80211_del_key,
9451                 .policy = nl80211_policy,
9452                 .flags = GENL_ADMIN_PERM,
9453                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9454                                   NL80211_FLAG_NEED_RTNL,
9455         },
9456         {
9457                 .cmd = NL80211_CMD_SET_BEACON,
9458                 .policy = nl80211_policy,
9459                 .flags = GENL_ADMIN_PERM,
9460                 .doit = nl80211_set_beacon,
9461                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9462                                   NL80211_FLAG_NEED_RTNL,
9463         },
9464         {
9465                 .cmd = NL80211_CMD_START_AP,
9466                 .policy = nl80211_policy,
9467                 .flags = GENL_ADMIN_PERM,
9468                 .doit = nl80211_start_ap,
9469                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9470                                   NL80211_FLAG_NEED_RTNL,
9471         },
9472         {
9473                 .cmd = NL80211_CMD_STOP_AP,
9474                 .policy = nl80211_policy,
9475                 .flags = GENL_ADMIN_PERM,
9476                 .doit = nl80211_stop_ap,
9477                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9478                                   NL80211_FLAG_NEED_RTNL,
9479         },
9480         {
9481                 .cmd = NL80211_CMD_GET_STATION,
9482                 .doit = nl80211_get_station,
9483                 .dumpit = nl80211_dump_station,
9484                 .policy = nl80211_policy,
9485                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9486                                   NL80211_FLAG_NEED_RTNL,
9487         },
9488         {
9489                 .cmd = NL80211_CMD_SET_STATION,
9490                 .doit = nl80211_set_station,
9491                 .policy = nl80211_policy,
9492                 .flags = GENL_ADMIN_PERM,
9493                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9494                                   NL80211_FLAG_NEED_RTNL,
9495         },
9496         {
9497                 .cmd = NL80211_CMD_NEW_STATION,
9498                 .doit = nl80211_new_station,
9499                 .policy = nl80211_policy,
9500                 .flags = GENL_ADMIN_PERM,
9501                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9502                                   NL80211_FLAG_NEED_RTNL,
9503         },
9504         {
9505                 .cmd = NL80211_CMD_DEL_STATION,
9506                 .doit = nl80211_del_station,
9507                 .policy = nl80211_policy,
9508                 .flags = GENL_ADMIN_PERM,
9509                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9510                                   NL80211_FLAG_NEED_RTNL,
9511         },
9512         {
9513                 .cmd = NL80211_CMD_GET_MPATH,
9514                 .doit = nl80211_get_mpath,
9515                 .dumpit = nl80211_dump_mpath,
9516                 .policy = nl80211_policy,
9517                 .flags = GENL_ADMIN_PERM,
9518                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9519                                   NL80211_FLAG_NEED_RTNL,
9520         },
9521         {
9522                 .cmd = NL80211_CMD_SET_MPATH,
9523                 .doit = nl80211_set_mpath,
9524                 .policy = nl80211_policy,
9525                 .flags = GENL_ADMIN_PERM,
9526                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9527                                   NL80211_FLAG_NEED_RTNL,
9528         },
9529         {
9530                 .cmd = NL80211_CMD_NEW_MPATH,
9531                 .doit = nl80211_new_mpath,
9532                 .policy = nl80211_policy,
9533                 .flags = GENL_ADMIN_PERM,
9534                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9535                                   NL80211_FLAG_NEED_RTNL,
9536         },
9537         {
9538                 .cmd = NL80211_CMD_DEL_MPATH,
9539                 .doit = nl80211_del_mpath,
9540                 .policy = nl80211_policy,
9541                 .flags = GENL_ADMIN_PERM,
9542                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9543                                   NL80211_FLAG_NEED_RTNL,
9544         },
9545         {
9546                 .cmd = NL80211_CMD_SET_BSS,
9547                 .doit = nl80211_set_bss,
9548                 .policy = nl80211_policy,
9549                 .flags = GENL_ADMIN_PERM,
9550                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9551                                   NL80211_FLAG_NEED_RTNL,
9552         },
9553         {
9554                 .cmd = NL80211_CMD_GET_REG,
9555                 .doit = nl80211_get_reg,
9556                 .policy = nl80211_policy,
9557                 .internal_flags = NL80211_FLAG_NEED_RTNL,
9558                 /* can be retrieved by unprivileged users */
9559         },
9560         {
9561                 .cmd = NL80211_CMD_SET_REG,
9562                 .doit = nl80211_set_reg,
9563                 .policy = nl80211_policy,
9564                 .flags = GENL_ADMIN_PERM,
9565                 .internal_flags = NL80211_FLAG_NEED_RTNL,
9566         },
9567         {
9568                 .cmd = NL80211_CMD_REQ_SET_REG,
9569                 .doit = nl80211_req_set_reg,
9570                 .policy = nl80211_policy,
9571                 .flags = GENL_ADMIN_PERM,
9572         },
9573         {
9574                 .cmd = NL80211_CMD_GET_MESH_CONFIG,
9575                 .doit = nl80211_get_mesh_config,
9576                 .policy = nl80211_policy,
9577                 /* can be retrieved by unprivileged users */
9578                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9579                                   NL80211_FLAG_NEED_RTNL,
9580         },
9581         {
9582                 .cmd = NL80211_CMD_SET_MESH_CONFIG,
9583                 .doit = nl80211_update_mesh_config,
9584                 .policy = nl80211_policy,
9585                 .flags = GENL_ADMIN_PERM,
9586                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9587                                   NL80211_FLAG_NEED_RTNL,
9588         },
9589         {
9590                 .cmd = NL80211_CMD_TRIGGER_SCAN,
9591                 .doit = nl80211_trigger_scan,
9592                 .policy = nl80211_policy,
9593                 .flags = GENL_ADMIN_PERM,
9594                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9595                                   NL80211_FLAG_NEED_RTNL,
9596         },
9597         {
9598                 .cmd = NL80211_CMD_GET_SCAN,
9599                 .policy = nl80211_policy,
9600                 .dumpit = nl80211_dump_scan,
9601         },
9602         {
9603                 .cmd = NL80211_CMD_START_SCHED_SCAN,
9604                 .doit = nl80211_start_sched_scan,
9605                 .policy = nl80211_policy,
9606                 .flags = GENL_ADMIN_PERM,
9607                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9608                                   NL80211_FLAG_NEED_RTNL,
9609         },
9610         {
9611                 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
9612                 .doit = nl80211_stop_sched_scan,
9613                 .policy = nl80211_policy,
9614                 .flags = GENL_ADMIN_PERM,
9615                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9616                                   NL80211_FLAG_NEED_RTNL,
9617         },
9618         {
9619                 .cmd = NL80211_CMD_AUTHENTICATE,
9620                 .doit = nl80211_authenticate,
9621                 .policy = nl80211_policy,
9622                 .flags = GENL_ADMIN_PERM,
9623                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9624                                   NL80211_FLAG_NEED_RTNL,
9625         },
9626         {
9627                 .cmd = NL80211_CMD_ASSOCIATE,
9628                 .doit = nl80211_associate,
9629                 .policy = nl80211_policy,
9630                 .flags = GENL_ADMIN_PERM,
9631                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9632                                   NL80211_FLAG_NEED_RTNL,
9633         },
9634         {
9635                 .cmd = NL80211_CMD_DEAUTHENTICATE,
9636                 .doit = nl80211_deauthenticate,
9637                 .policy = nl80211_policy,
9638                 .flags = GENL_ADMIN_PERM,
9639                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9640                                   NL80211_FLAG_NEED_RTNL,
9641         },
9642         {
9643                 .cmd = NL80211_CMD_DISASSOCIATE,
9644                 .doit = nl80211_disassociate,
9645                 .policy = nl80211_policy,
9646                 .flags = GENL_ADMIN_PERM,
9647                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9648                                   NL80211_FLAG_NEED_RTNL,
9649         },
9650         {
9651                 .cmd = NL80211_CMD_JOIN_IBSS,
9652                 .doit = nl80211_join_ibss,
9653                 .policy = nl80211_policy,
9654                 .flags = GENL_ADMIN_PERM,
9655                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9656                                   NL80211_FLAG_NEED_RTNL,
9657         },
9658         {
9659                 .cmd = NL80211_CMD_LEAVE_IBSS,
9660                 .doit = nl80211_leave_ibss,
9661                 .policy = nl80211_policy,
9662                 .flags = GENL_ADMIN_PERM,
9663                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9664                                   NL80211_FLAG_NEED_RTNL,
9665         },
9666 #ifdef CONFIG_NL80211_TESTMODE
9667         {
9668                 .cmd = NL80211_CMD_TESTMODE,
9669                 .doit = nl80211_testmode_do,
9670                 .dumpit = nl80211_testmode_dump,
9671                 .policy = nl80211_policy,
9672                 .flags = GENL_ADMIN_PERM,
9673                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9674                                   NL80211_FLAG_NEED_RTNL,
9675         },
9676 #endif
9677         {
9678                 .cmd = NL80211_CMD_CONNECT,
9679                 .doit = nl80211_connect,
9680                 .policy = nl80211_policy,
9681                 .flags = GENL_ADMIN_PERM,
9682                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9683                                   NL80211_FLAG_NEED_RTNL,
9684         },
9685         {
9686                 .cmd = NL80211_CMD_DISCONNECT,
9687                 .doit = nl80211_disconnect,
9688                 .policy = nl80211_policy,
9689                 .flags = GENL_ADMIN_PERM,
9690                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9691                                   NL80211_FLAG_NEED_RTNL,
9692         },
9693         {
9694                 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
9695                 .doit = nl80211_wiphy_netns,
9696                 .policy = nl80211_policy,
9697                 .flags = GENL_ADMIN_PERM,
9698                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9699                                   NL80211_FLAG_NEED_RTNL,
9700         },
9701         {
9702                 .cmd = NL80211_CMD_GET_SURVEY,
9703                 .policy = nl80211_policy,
9704                 .dumpit = nl80211_dump_survey,
9705         },
9706         {
9707                 .cmd = NL80211_CMD_SET_PMKSA,
9708                 .doit = nl80211_setdel_pmksa,
9709                 .policy = nl80211_policy,
9710                 .flags = GENL_ADMIN_PERM,
9711                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9712                                   NL80211_FLAG_NEED_RTNL,
9713         },
9714         {
9715                 .cmd = NL80211_CMD_DEL_PMKSA,
9716                 .doit = nl80211_setdel_pmksa,
9717                 .policy = nl80211_policy,
9718                 .flags = GENL_ADMIN_PERM,
9719                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9720                                   NL80211_FLAG_NEED_RTNL,
9721         },
9722         {
9723                 .cmd = NL80211_CMD_FLUSH_PMKSA,
9724                 .doit = nl80211_flush_pmksa,
9725                 .policy = nl80211_policy,
9726                 .flags = GENL_ADMIN_PERM,
9727                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9728                                   NL80211_FLAG_NEED_RTNL,
9729         },
9730         {
9731                 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
9732                 .doit = nl80211_remain_on_channel,
9733                 .policy = nl80211_policy,
9734                 .flags = GENL_ADMIN_PERM,
9735                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9736                                   NL80211_FLAG_NEED_RTNL,
9737         },
9738         {
9739                 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
9740                 .doit = nl80211_cancel_remain_on_channel,
9741                 .policy = nl80211_policy,
9742                 .flags = GENL_ADMIN_PERM,
9743                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9744                                   NL80211_FLAG_NEED_RTNL,
9745         },
9746         {
9747                 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
9748                 .doit = nl80211_set_tx_bitrate_mask,
9749                 .policy = nl80211_policy,
9750                 .flags = GENL_ADMIN_PERM,
9751                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9752                                   NL80211_FLAG_NEED_RTNL,
9753         },
9754         {
9755                 .cmd = NL80211_CMD_REGISTER_FRAME,
9756                 .doit = nl80211_register_mgmt,
9757                 .policy = nl80211_policy,
9758                 .flags = GENL_ADMIN_PERM,
9759                 .internal_flags = NL80211_FLAG_NEED_WDEV |
9760                                   NL80211_FLAG_NEED_RTNL,
9761         },
9762         {
9763                 .cmd = NL80211_CMD_FRAME,
9764                 .doit = nl80211_tx_mgmt,
9765                 .policy = nl80211_policy,
9766                 .flags = GENL_ADMIN_PERM,
9767                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9768                                   NL80211_FLAG_NEED_RTNL,
9769         },
9770         {
9771                 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
9772                 .doit = nl80211_tx_mgmt_cancel_wait,
9773                 .policy = nl80211_policy,
9774                 .flags = GENL_ADMIN_PERM,
9775                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9776                                   NL80211_FLAG_NEED_RTNL,
9777         },
9778         {
9779                 .cmd = NL80211_CMD_SET_POWER_SAVE,
9780                 .doit = nl80211_set_power_save,
9781                 .policy = nl80211_policy,
9782                 .flags = GENL_ADMIN_PERM,
9783                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9784                                   NL80211_FLAG_NEED_RTNL,
9785         },
9786         {
9787                 .cmd = NL80211_CMD_GET_POWER_SAVE,
9788                 .doit = nl80211_get_power_save,
9789                 .policy = nl80211_policy,
9790                 /* can be retrieved by unprivileged users */
9791                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9792                                   NL80211_FLAG_NEED_RTNL,
9793         },
9794         {
9795                 .cmd = NL80211_CMD_SET_CQM,
9796                 .doit = nl80211_set_cqm,
9797                 .policy = nl80211_policy,
9798                 .flags = GENL_ADMIN_PERM,
9799                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9800                                   NL80211_FLAG_NEED_RTNL,
9801         },
9802         {
9803                 .cmd = NL80211_CMD_SET_CHANNEL,
9804                 .doit = nl80211_set_channel,
9805                 .policy = nl80211_policy,
9806                 .flags = GENL_ADMIN_PERM,
9807                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9808                                   NL80211_FLAG_NEED_RTNL,
9809         },
9810         {
9811                 .cmd = NL80211_CMD_SET_WDS_PEER,
9812                 .doit = nl80211_set_wds_peer,
9813                 .policy = nl80211_policy,
9814                 .flags = GENL_ADMIN_PERM,
9815                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9816                                   NL80211_FLAG_NEED_RTNL,
9817         },
9818         {
9819                 .cmd = NL80211_CMD_JOIN_MESH,
9820                 .doit = nl80211_join_mesh,
9821                 .policy = nl80211_policy,
9822                 .flags = GENL_ADMIN_PERM,
9823                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9824                                   NL80211_FLAG_NEED_RTNL,
9825         },
9826         {
9827                 .cmd = NL80211_CMD_LEAVE_MESH,
9828                 .doit = nl80211_leave_mesh,
9829                 .policy = nl80211_policy,
9830                 .flags = GENL_ADMIN_PERM,
9831                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9832                                   NL80211_FLAG_NEED_RTNL,
9833         },
9834 #ifdef CONFIG_PM
9835         {
9836                 .cmd = NL80211_CMD_GET_WOWLAN,
9837                 .doit = nl80211_get_wowlan,
9838                 .policy = nl80211_policy,
9839                 /* can be retrieved by unprivileged users */
9840                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9841                                   NL80211_FLAG_NEED_RTNL,
9842         },
9843         {
9844                 .cmd = NL80211_CMD_SET_WOWLAN,
9845                 .doit = nl80211_set_wowlan,
9846                 .policy = nl80211_policy,
9847                 .flags = GENL_ADMIN_PERM,
9848                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9849                                   NL80211_FLAG_NEED_RTNL,
9850         },
9851 #endif
9852         {
9853                 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
9854                 .doit = nl80211_set_rekey_data,
9855                 .policy = nl80211_policy,
9856                 .flags = GENL_ADMIN_PERM,
9857                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9858                                   NL80211_FLAG_NEED_RTNL,
9859         },
9860         {
9861                 .cmd = NL80211_CMD_TDLS_MGMT,
9862                 .doit = nl80211_tdls_mgmt,
9863                 .policy = nl80211_policy,
9864                 .flags = GENL_ADMIN_PERM,
9865                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9866                                   NL80211_FLAG_NEED_RTNL,
9867         },
9868         {
9869                 .cmd = NL80211_CMD_TDLS_OPER,
9870                 .doit = nl80211_tdls_oper,
9871                 .policy = nl80211_policy,
9872                 .flags = GENL_ADMIN_PERM,
9873                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9874                                   NL80211_FLAG_NEED_RTNL,
9875         },
9876         {
9877                 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
9878                 .doit = nl80211_register_unexpected_frame,
9879                 .policy = nl80211_policy,
9880                 .flags = GENL_ADMIN_PERM,
9881                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9882                                   NL80211_FLAG_NEED_RTNL,
9883         },
9884         {
9885                 .cmd = NL80211_CMD_PROBE_CLIENT,
9886                 .doit = nl80211_probe_client,
9887                 .policy = nl80211_policy,
9888                 .flags = GENL_ADMIN_PERM,
9889                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9890                                   NL80211_FLAG_NEED_RTNL,
9891         },
9892         {
9893                 .cmd = NL80211_CMD_REGISTER_BEACONS,
9894                 .doit = nl80211_register_beacons,
9895                 .policy = nl80211_policy,
9896                 .flags = GENL_ADMIN_PERM,
9897                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9898                                   NL80211_FLAG_NEED_RTNL,
9899         },
9900         {
9901                 .cmd = NL80211_CMD_SET_NOACK_MAP,
9902                 .doit = nl80211_set_noack_map,
9903                 .policy = nl80211_policy,
9904                 .flags = GENL_ADMIN_PERM,
9905                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9906                                   NL80211_FLAG_NEED_RTNL,
9907         },
9908         {
9909                 .cmd = NL80211_CMD_START_P2P_DEVICE,
9910                 .doit = nl80211_start_p2p_device,
9911                 .policy = nl80211_policy,
9912                 .flags = GENL_ADMIN_PERM,
9913                 .internal_flags = NL80211_FLAG_NEED_WDEV |
9914                                   NL80211_FLAG_NEED_RTNL,
9915         },
9916         {
9917                 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
9918                 .doit = nl80211_stop_p2p_device,
9919                 .policy = nl80211_policy,
9920                 .flags = GENL_ADMIN_PERM,
9921                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9922                                   NL80211_FLAG_NEED_RTNL,
9923         },
9924         {
9925                 .cmd = NL80211_CMD_SET_MCAST_RATE,
9926                 .doit = nl80211_set_mcast_rate,
9927                 .policy = nl80211_policy,
9928                 .flags = GENL_ADMIN_PERM,
9929                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9930                                   NL80211_FLAG_NEED_RTNL,
9931         },
9932         {
9933                 .cmd = NL80211_CMD_SET_MAC_ACL,
9934                 .doit = nl80211_set_mac_acl,
9935                 .policy = nl80211_policy,
9936                 .flags = GENL_ADMIN_PERM,
9937                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9938                                   NL80211_FLAG_NEED_RTNL,
9939         },
9940         {
9941                 .cmd = NL80211_CMD_RADAR_DETECT,
9942                 .doit = nl80211_start_radar_detection,
9943                 .policy = nl80211_policy,
9944                 .flags = GENL_ADMIN_PERM,
9945                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9946                                   NL80211_FLAG_NEED_RTNL,
9947         },
9948         {
9949                 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
9950                 .doit = nl80211_get_protocol_features,
9951                 .policy = nl80211_policy,
9952         },
9953         {
9954                 .cmd = NL80211_CMD_UPDATE_FT_IES,
9955                 .doit = nl80211_update_ft_ies,
9956                 .policy = nl80211_policy,
9957                 .flags = GENL_ADMIN_PERM,
9958                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9959                                   NL80211_FLAG_NEED_RTNL,
9960         },
9961         {
9962                 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
9963                 .doit = nl80211_crit_protocol_start,
9964                 .policy = nl80211_policy,
9965                 .flags = GENL_ADMIN_PERM,
9966                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9967                                   NL80211_FLAG_NEED_RTNL,
9968         },
9969         {
9970                 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
9971                 .doit = nl80211_crit_protocol_stop,
9972                 .policy = nl80211_policy,
9973                 .flags = GENL_ADMIN_PERM,
9974                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9975                                   NL80211_FLAG_NEED_RTNL,
9976         },
9977         {
9978                 .cmd = NL80211_CMD_GET_COALESCE,
9979                 .doit = nl80211_get_coalesce,
9980                 .policy = nl80211_policy,
9981                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9982                                   NL80211_FLAG_NEED_RTNL,
9983         },
9984         {
9985                 .cmd = NL80211_CMD_SET_COALESCE,
9986                 .doit = nl80211_set_coalesce,
9987                 .policy = nl80211_policy,
9988                 .flags = GENL_ADMIN_PERM,
9989                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9990                                   NL80211_FLAG_NEED_RTNL,
9991         },
9992         {
9993                 .cmd = NL80211_CMD_CHANNEL_SWITCH,
9994                 .doit = nl80211_channel_switch,
9995                 .policy = nl80211_policy,
9996                 .flags = GENL_ADMIN_PERM,
9997                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9998                                   NL80211_FLAG_NEED_RTNL,
9999         },
10000         {
10001                 .cmd = NL80211_CMD_VENDOR,
10002                 .doit = nl80211_vendor_cmd,
10003                 .policy = nl80211_policy,
10004                 .flags = GENL_ADMIN_PERM,
10005                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10006                                   NL80211_FLAG_NEED_RTNL,
10007         },
10008         {
10009                 .cmd = NL80211_CMD_SET_QOS_MAP,
10010                 .doit = nl80211_set_qos_map,
10011                 .policy = nl80211_policy,
10012                 .flags = GENL_ADMIN_PERM,
10013                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10014                                   NL80211_FLAG_NEED_RTNL,
10015         },
10016 };
10017
10018 /* notification functions */
10019
10020 void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev)
10021 {
10022         struct sk_buff *msg;
10023         struct nl80211_dump_wiphy_state state = {};
10024
10025         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10026         if (!msg)
10027                 return;
10028
10029         if (nl80211_send_wiphy(rdev, msg, 0, 0, 0, &state) < 0) {
10030                 nlmsg_free(msg);
10031                 return;
10032         }
10033
10034         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10035                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
10036 }
10037
10038 static int nl80211_add_scan_req(struct sk_buff *msg,
10039                                 struct cfg80211_registered_device *rdev)
10040 {
10041         struct cfg80211_scan_request *req = rdev->scan_req;
10042         struct nlattr *nest;
10043         int i;
10044
10045         if (WARN_ON(!req))
10046                 return 0;
10047
10048         nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
10049         if (!nest)
10050                 goto nla_put_failure;
10051         for (i = 0; i < req->n_ssids; i++) {
10052                 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
10053                         goto nla_put_failure;
10054         }
10055         nla_nest_end(msg, nest);
10056
10057         nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
10058         if (!nest)
10059                 goto nla_put_failure;
10060         for (i = 0; i < req->n_channels; i++) {
10061                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
10062                         goto nla_put_failure;
10063         }
10064         nla_nest_end(msg, nest);
10065
10066         if (req->ie &&
10067             nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
10068                 goto nla_put_failure;
10069
10070         if (req->flags &&
10071             nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
10072                 goto nla_put_failure;
10073
10074         return 0;
10075  nla_put_failure:
10076         return -ENOBUFS;
10077 }
10078
10079 static int nl80211_send_scan_msg(struct sk_buff *msg,
10080                                  struct cfg80211_registered_device *rdev,
10081                                  struct wireless_dev *wdev,
10082                                  u32 portid, u32 seq, int flags,
10083                                  u32 cmd)
10084 {
10085         void *hdr;
10086
10087         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
10088         if (!hdr)
10089                 return -1;
10090
10091         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10092             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
10093                                          wdev->netdev->ifindex)) ||
10094             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
10095                 goto nla_put_failure;
10096
10097         /* ignore errors and send incomplete event anyway */
10098         nl80211_add_scan_req(msg, rdev);
10099
10100         return genlmsg_end(msg, hdr);
10101
10102  nla_put_failure:
10103         genlmsg_cancel(msg, hdr);
10104         return -EMSGSIZE;
10105 }
10106
10107 static int
10108 nl80211_send_sched_scan_msg(struct sk_buff *msg,
10109                             struct cfg80211_registered_device *rdev,
10110                             struct net_device *netdev,
10111                             u32 portid, u32 seq, int flags, u32 cmd)
10112 {
10113         void *hdr;
10114
10115         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
10116         if (!hdr)
10117                 return -1;
10118
10119         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10120             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
10121                 goto nla_put_failure;
10122
10123         return genlmsg_end(msg, hdr);
10124
10125  nla_put_failure:
10126         genlmsg_cancel(msg, hdr);
10127         return -EMSGSIZE;
10128 }
10129
10130 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
10131                              struct wireless_dev *wdev)
10132 {
10133         struct sk_buff *msg;
10134
10135         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10136         if (!msg)
10137                 return;
10138
10139         if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
10140                                   NL80211_CMD_TRIGGER_SCAN) < 0) {
10141                 nlmsg_free(msg);
10142                 return;
10143         }
10144
10145         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10146                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
10147 }
10148
10149 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
10150                                        struct wireless_dev *wdev, bool aborted)
10151 {
10152         struct sk_buff *msg;
10153
10154         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10155         if (!msg)
10156                 return NULL;
10157
10158         if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
10159                                   aborted ? NL80211_CMD_SCAN_ABORTED :
10160                                             NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
10161                 nlmsg_free(msg);
10162                 return NULL;
10163         }
10164
10165         return msg;
10166 }
10167
10168 void nl80211_send_scan_result(struct cfg80211_registered_device *rdev,
10169                               struct sk_buff *msg)
10170 {
10171         if (!msg)
10172                 return;
10173
10174         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10175                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
10176 }
10177
10178 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
10179                                      struct net_device *netdev)
10180 {
10181         struct sk_buff *msg;
10182
10183         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10184         if (!msg)
10185                 return;
10186
10187         if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
10188                                         NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
10189                 nlmsg_free(msg);
10190                 return;
10191         }
10192
10193         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10194                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
10195 }
10196
10197 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
10198                              struct net_device *netdev, u32 cmd)
10199 {
10200         struct sk_buff *msg;
10201
10202         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10203         if (!msg)
10204                 return;
10205
10206         if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
10207                 nlmsg_free(msg);
10208                 return;
10209         }
10210
10211         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10212                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
10213 }
10214
10215 /*
10216  * This can happen on global regulatory changes or device specific settings
10217  * based on custom world regulatory domains.
10218  */
10219 void nl80211_send_reg_change_event(struct regulatory_request *request)
10220 {
10221         struct sk_buff *msg;
10222         void *hdr;
10223
10224         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10225         if (!msg)
10226                 return;
10227
10228         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE);
10229         if (!hdr) {
10230                 nlmsg_free(msg);
10231                 return;
10232         }
10233
10234         /* Userspace can always count this one always being set */
10235         if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
10236                 goto nla_put_failure;
10237
10238         if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
10239                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
10240                                NL80211_REGDOM_TYPE_WORLD))
10241                         goto nla_put_failure;
10242         } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
10243                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
10244                                NL80211_REGDOM_TYPE_CUSTOM_WORLD))
10245                         goto nla_put_failure;
10246         } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
10247                    request->intersect) {
10248                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
10249                                NL80211_REGDOM_TYPE_INTERSECTION))
10250                         goto nla_put_failure;
10251         } else {
10252                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
10253                                NL80211_REGDOM_TYPE_COUNTRY) ||
10254                     nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
10255                                    request->alpha2))
10256                         goto nla_put_failure;
10257         }
10258
10259         if (request->wiphy_idx != WIPHY_IDX_INVALID &&
10260             nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
10261                 goto nla_put_failure;
10262
10263         genlmsg_end(msg, hdr);
10264
10265         rcu_read_lock();
10266         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
10267                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
10268         rcu_read_unlock();
10269
10270         return;
10271
10272 nla_put_failure:
10273         genlmsg_cancel(msg, hdr);
10274         nlmsg_free(msg);
10275 }
10276
10277 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
10278                                     struct net_device *netdev,
10279                                     const u8 *buf, size_t len,
10280                                     enum nl80211_commands cmd, gfp_t gfp)
10281 {
10282         struct sk_buff *msg;
10283         void *hdr;
10284
10285         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10286         if (!msg)
10287                 return;
10288
10289         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
10290         if (!hdr) {
10291                 nlmsg_free(msg);
10292                 return;
10293         }
10294
10295         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10296             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10297             nla_put(msg, NL80211_ATTR_FRAME, len, buf))
10298                 goto nla_put_failure;
10299
10300         genlmsg_end(msg, hdr);
10301
10302         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10303                                 NL80211_MCGRP_MLME, gfp);
10304         return;
10305
10306  nla_put_failure:
10307         genlmsg_cancel(msg, hdr);
10308         nlmsg_free(msg);
10309 }
10310
10311 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
10312                           struct net_device *netdev, const u8 *buf,
10313                           size_t len, gfp_t gfp)
10314 {
10315         nl80211_send_mlme_event(rdev, netdev, buf, len,
10316                                 NL80211_CMD_AUTHENTICATE, gfp);
10317 }
10318
10319 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
10320                            struct net_device *netdev, const u8 *buf,
10321                            size_t len, gfp_t gfp)
10322 {
10323         nl80211_send_mlme_event(rdev, netdev, buf, len,
10324                                 NL80211_CMD_ASSOCIATE, gfp);
10325 }
10326
10327 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
10328                          struct net_device *netdev, const u8 *buf,
10329                          size_t len, gfp_t gfp)
10330 {
10331         nl80211_send_mlme_event(rdev, netdev, buf, len,
10332                                 NL80211_CMD_DEAUTHENTICATE, gfp);
10333 }
10334
10335 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
10336                            struct net_device *netdev, const u8 *buf,
10337                            size_t len, gfp_t gfp)
10338 {
10339         nl80211_send_mlme_event(rdev, netdev, buf, len,
10340                                 NL80211_CMD_DISASSOCIATE, gfp);
10341 }
10342
10343 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
10344                                   size_t len)
10345 {
10346         struct wireless_dev *wdev = dev->ieee80211_ptr;
10347         struct wiphy *wiphy = wdev->wiphy;
10348         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10349         const struct ieee80211_mgmt *mgmt = (void *)buf;
10350         u32 cmd;
10351
10352         if (WARN_ON(len < 2))
10353                 return;
10354
10355         if (ieee80211_is_deauth(mgmt->frame_control))
10356                 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
10357         else
10358                 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
10359
10360         trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
10361         nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC);
10362 }
10363 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
10364
10365 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
10366                                       struct net_device *netdev, int cmd,
10367                                       const u8 *addr, gfp_t gfp)
10368 {
10369         struct sk_buff *msg;
10370         void *hdr;
10371
10372         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10373         if (!msg)
10374                 return;
10375
10376         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
10377         if (!hdr) {
10378                 nlmsg_free(msg);
10379                 return;
10380         }
10381
10382         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10383             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10384             nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
10385             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
10386                 goto nla_put_failure;
10387
10388         genlmsg_end(msg, hdr);
10389
10390         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10391                                 NL80211_MCGRP_MLME, gfp);
10392         return;
10393
10394  nla_put_failure:
10395         genlmsg_cancel(msg, hdr);
10396         nlmsg_free(msg);
10397 }
10398
10399 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
10400                                struct net_device *netdev, const u8 *addr,
10401                                gfp_t gfp)
10402 {
10403         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
10404                                   addr, gfp);
10405 }
10406
10407 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
10408                                 struct net_device *netdev, const u8 *addr,
10409                                 gfp_t gfp)
10410 {
10411         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
10412                                   addr, gfp);
10413 }
10414
10415 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
10416                                  struct net_device *netdev, const u8 *bssid,
10417                                  const u8 *req_ie, size_t req_ie_len,
10418                                  const u8 *resp_ie, size_t resp_ie_len,
10419                                  u16 status, gfp_t gfp)
10420 {
10421         struct sk_buff *msg;
10422         void *hdr;
10423
10424         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10425         if (!msg)
10426                 return;
10427
10428         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
10429         if (!hdr) {
10430                 nlmsg_free(msg);
10431                 return;
10432         }
10433
10434         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10435             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10436             (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) ||
10437             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status) ||
10438             (req_ie &&
10439              nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
10440             (resp_ie &&
10441              nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
10442                 goto nla_put_failure;
10443
10444         genlmsg_end(msg, hdr);
10445
10446         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10447                                 NL80211_MCGRP_MLME, gfp);
10448         return;
10449
10450  nla_put_failure:
10451         genlmsg_cancel(msg, hdr);
10452         nlmsg_free(msg);
10453
10454 }
10455
10456 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
10457                          struct net_device *netdev, const u8 *bssid,
10458                          const u8 *req_ie, size_t req_ie_len,
10459                          const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
10460 {
10461         struct sk_buff *msg;
10462         void *hdr;
10463
10464         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10465         if (!msg)
10466                 return;
10467
10468         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
10469         if (!hdr) {
10470                 nlmsg_free(msg);
10471                 return;
10472         }
10473
10474         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10475             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10476             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
10477             (req_ie &&
10478              nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
10479             (resp_ie &&
10480              nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
10481                 goto nla_put_failure;
10482
10483         genlmsg_end(msg, hdr);
10484
10485         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10486                                 NL80211_MCGRP_MLME, gfp);
10487         return;
10488
10489  nla_put_failure:
10490         genlmsg_cancel(msg, hdr);
10491         nlmsg_free(msg);
10492
10493 }
10494
10495 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
10496                                struct net_device *netdev, u16 reason,
10497                                const u8 *ie, size_t ie_len, bool from_ap)
10498 {
10499         struct sk_buff *msg;
10500         void *hdr;
10501
10502         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10503         if (!msg)
10504                 return;
10505
10506         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
10507         if (!hdr) {
10508                 nlmsg_free(msg);
10509                 return;
10510         }
10511
10512         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10513             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10514             (from_ap && reason &&
10515              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
10516             (from_ap &&
10517              nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
10518             (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
10519                 goto nla_put_failure;
10520
10521         genlmsg_end(msg, hdr);
10522
10523         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10524                                 NL80211_MCGRP_MLME, GFP_KERNEL);
10525         return;
10526
10527  nla_put_failure:
10528         genlmsg_cancel(msg, hdr);
10529         nlmsg_free(msg);
10530
10531 }
10532
10533 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
10534                              struct net_device *netdev, const u8 *bssid,
10535                              gfp_t gfp)
10536 {
10537         struct sk_buff *msg;
10538         void *hdr;
10539
10540         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10541         if (!msg)
10542                 return;
10543
10544         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
10545         if (!hdr) {
10546                 nlmsg_free(msg);
10547                 return;
10548         }
10549
10550         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10551             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10552             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
10553                 goto nla_put_failure;
10554
10555         genlmsg_end(msg, hdr);
10556
10557         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10558                                 NL80211_MCGRP_MLME, gfp);
10559         return;
10560
10561  nla_put_failure:
10562         genlmsg_cancel(msg, hdr);
10563         nlmsg_free(msg);
10564 }
10565
10566 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
10567                                         const u8* ie, u8 ie_len, gfp_t gfp)
10568 {
10569         struct wireless_dev *wdev = dev->ieee80211_ptr;
10570         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
10571         struct sk_buff *msg;
10572         void *hdr;
10573
10574         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
10575                 return;
10576
10577         trace_cfg80211_notify_new_peer_candidate(dev, addr);
10578
10579         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10580         if (!msg)
10581                 return;
10582
10583         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
10584         if (!hdr) {
10585                 nlmsg_free(msg);
10586                 return;
10587         }
10588
10589         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10590             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10591             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
10592             (ie_len && ie &&
10593              nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
10594                 goto nla_put_failure;
10595
10596         genlmsg_end(msg, hdr);
10597
10598         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10599                                 NL80211_MCGRP_MLME, gfp);
10600         return;
10601
10602  nla_put_failure:
10603         genlmsg_cancel(msg, hdr);
10604         nlmsg_free(msg);
10605 }
10606 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
10607
10608 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
10609                                  struct net_device *netdev, const u8 *addr,
10610                                  enum nl80211_key_type key_type, int key_id,
10611                                  const u8 *tsc, gfp_t gfp)
10612 {
10613         struct sk_buff *msg;
10614         void *hdr;
10615
10616         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10617         if (!msg)
10618                 return;
10619
10620         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
10621         if (!hdr) {
10622                 nlmsg_free(msg);
10623                 return;
10624         }
10625
10626         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10627             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10628             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
10629             nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
10630             (key_id != -1 &&
10631              nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
10632             (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
10633                 goto nla_put_failure;
10634
10635         genlmsg_end(msg, hdr);
10636
10637         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10638                                 NL80211_MCGRP_MLME, gfp);
10639         return;
10640
10641  nla_put_failure:
10642         genlmsg_cancel(msg, hdr);
10643         nlmsg_free(msg);
10644 }
10645
10646 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
10647                                     struct ieee80211_channel *channel_before,
10648                                     struct ieee80211_channel *channel_after)
10649 {
10650         struct sk_buff *msg;
10651         void *hdr;
10652         struct nlattr *nl_freq;
10653
10654         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
10655         if (!msg)
10656                 return;
10657
10658         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
10659         if (!hdr) {
10660                 nlmsg_free(msg);
10661                 return;
10662         }
10663
10664         /*
10665          * Since we are applying the beacon hint to a wiphy we know its
10666          * wiphy_idx is valid
10667          */
10668         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
10669                 goto nla_put_failure;
10670
10671         /* Before */
10672         nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
10673         if (!nl_freq)
10674                 goto nla_put_failure;
10675         if (nl80211_msg_put_channel(msg, channel_before, false))
10676                 goto nla_put_failure;
10677         nla_nest_end(msg, nl_freq);
10678
10679         /* After */
10680         nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
10681         if (!nl_freq)
10682                 goto nla_put_failure;
10683         if (nl80211_msg_put_channel(msg, channel_after, false))
10684                 goto nla_put_failure;
10685         nla_nest_end(msg, nl_freq);
10686
10687         genlmsg_end(msg, hdr);
10688
10689         rcu_read_lock();
10690         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
10691                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
10692         rcu_read_unlock();
10693
10694         return;
10695
10696 nla_put_failure:
10697         genlmsg_cancel(msg, hdr);
10698         nlmsg_free(msg);
10699 }
10700
10701 static void nl80211_send_remain_on_chan_event(
10702         int cmd, struct cfg80211_registered_device *rdev,
10703         struct wireless_dev *wdev, u64 cookie,
10704         struct ieee80211_channel *chan,
10705         unsigned int duration, gfp_t gfp)
10706 {
10707         struct sk_buff *msg;
10708         void *hdr;
10709
10710         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10711         if (!msg)
10712                 return;
10713
10714         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
10715         if (!hdr) {
10716                 nlmsg_free(msg);
10717                 return;
10718         }
10719
10720         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10721             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
10722                                          wdev->netdev->ifindex)) ||
10723             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
10724             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
10725             nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
10726                         NL80211_CHAN_NO_HT) ||
10727             nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
10728                 goto nla_put_failure;
10729
10730         if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
10731             nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
10732                 goto nla_put_failure;
10733
10734         genlmsg_end(msg, hdr);
10735
10736         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10737                                 NL80211_MCGRP_MLME, gfp);
10738         return;
10739
10740  nla_put_failure:
10741         genlmsg_cancel(msg, hdr);
10742         nlmsg_free(msg);
10743 }
10744
10745 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
10746                                struct ieee80211_channel *chan,
10747                                unsigned int duration, gfp_t gfp)
10748 {
10749         struct wiphy *wiphy = wdev->wiphy;
10750         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10751
10752         trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
10753         nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
10754                                           rdev, wdev, cookie, chan,
10755                                           duration, gfp);
10756 }
10757 EXPORT_SYMBOL(cfg80211_ready_on_channel);
10758
10759 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
10760                                         struct ieee80211_channel *chan,
10761                                         gfp_t gfp)
10762 {
10763         struct wiphy *wiphy = wdev->wiphy;
10764         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10765
10766         trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
10767         nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
10768                                           rdev, wdev, cookie, chan, 0, gfp);
10769 }
10770 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
10771
10772 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
10773                       struct station_info *sinfo, gfp_t gfp)
10774 {
10775         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
10776         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10777         struct sk_buff *msg;
10778
10779         trace_cfg80211_new_sta(dev, mac_addr, sinfo);
10780
10781         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10782         if (!msg)
10783                 return;
10784
10785         if (nl80211_send_station(msg, 0, 0, 0,
10786                                  rdev, dev, mac_addr, sinfo) < 0) {
10787                 nlmsg_free(msg);
10788                 return;
10789         }
10790
10791         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10792                                 NL80211_MCGRP_MLME, gfp);
10793 }
10794 EXPORT_SYMBOL(cfg80211_new_sta);
10795
10796 void cfg80211_del_sta(struct net_device *dev, const u8 *mac_addr, gfp_t gfp)
10797 {
10798         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
10799         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10800         struct sk_buff *msg;
10801         void *hdr;
10802
10803         trace_cfg80211_del_sta(dev, mac_addr);
10804
10805         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10806         if (!msg)
10807                 return;
10808
10809         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_STATION);
10810         if (!hdr) {
10811                 nlmsg_free(msg);
10812                 return;
10813         }
10814
10815         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10816             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
10817                 goto nla_put_failure;
10818
10819         genlmsg_end(msg, hdr);
10820
10821         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10822                                 NL80211_MCGRP_MLME, gfp);
10823         return;
10824
10825  nla_put_failure:
10826         genlmsg_cancel(msg, hdr);
10827         nlmsg_free(msg);
10828 }
10829 EXPORT_SYMBOL(cfg80211_del_sta);
10830
10831 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
10832                           enum nl80211_connect_failed_reason reason,
10833                           gfp_t gfp)
10834 {
10835         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
10836         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10837         struct sk_buff *msg;
10838         void *hdr;
10839
10840         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
10841         if (!msg)
10842                 return;
10843
10844         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
10845         if (!hdr) {
10846                 nlmsg_free(msg);
10847                 return;
10848         }
10849
10850         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10851             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
10852             nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
10853                 goto nla_put_failure;
10854
10855         genlmsg_end(msg, hdr);
10856
10857         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10858                                 NL80211_MCGRP_MLME, gfp);
10859         return;
10860
10861  nla_put_failure:
10862         genlmsg_cancel(msg, hdr);
10863         nlmsg_free(msg);
10864 }
10865 EXPORT_SYMBOL(cfg80211_conn_failed);
10866
10867 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
10868                                        const u8 *addr, gfp_t gfp)
10869 {
10870         struct wireless_dev *wdev = dev->ieee80211_ptr;
10871         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
10872         struct sk_buff *msg;
10873         void *hdr;
10874         u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid);
10875
10876         if (!nlportid)
10877                 return false;
10878
10879         msg = nlmsg_new(100, gfp);
10880         if (!msg)
10881                 return true;
10882
10883         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
10884         if (!hdr) {
10885                 nlmsg_free(msg);
10886                 return true;
10887         }
10888
10889         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10890             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10891             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
10892                 goto nla_put_failure;
10893
10894         genlmsg_end(msg, hdr);
10895         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
10896         return true;
10897
10898  nla_put_failure:
10899         genlmsg_cancel(msg, hdr);
10900         nlmsg_free(msg);
10901         return true;
10902 }
10903
10904 bool cfg80211_rx_spurious_frame(struct net_device *dev,
10905                                 const u8 *addr, gfp_t gfp)
10906 {
10907         struct wireless_dev *wdev = dev->ieee80211_ptr;
10908         bool ret;
10909
10910         trace_cfg80211_rx_spurious_frame(dev, addr);
10911
10912         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
10913                     wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
10914                 trace_cfg80211_return_bool(false);
10915                 return false;
10916         }
10917         ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
10918                                          addr, gfp);
10919         trace_cfg80211_return_bool(ret);
10920         return ret;
10921 }
10922 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
10923
10924 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
10925                                         const u8 *addr, gfp_t gfp)
10926 {
10927         struct wireless_dev *wdev = dev->ieee80211_ptr;
10928         bool ret;
10929
10930         trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
10931
10932         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
10933                     wdev->iftype != NL80211_IFTYPE_P2P_GO &&
10934                     wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
10935                 trace_cfg80211_return_bool(false);
10936                 return false;
10937         }
10938         ret = __nl80211_unexpected_frame(dev,
10939                                          NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
10940                                          addr, gfp);
10941         trace_cfg80211_return_bool(ret);
10942         return ret;
10943 }
10944 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
10945
10946 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
10947                       struct wireless_dev *wdev, u32 nlportid,
10948                       int freq, int sig_dbm,
10949                       const u8 *buf, size_t len, u32 flags, gfp_t gfp)
10950 {
10951         struct net_device *netdev = wdev->netdev;
10952         struct sk_buff *msg;
10953         void *hdr;
10954
10955         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10956         if (!msg)
10957                 return -ENOMEM;
10958
10959         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
10960         if (!hdr) {
10961                 nlmsg_free(msg);
10962                 return -ENOMEM;
10963         }
10964
10965         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10966             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
10967                                         netdev->ifindex)) ||
10968             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
10969             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
10970             (sig_dbm &&
10971              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
10972             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
10973             (flags &&
10974              nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
10975                 goto nla_put_failure;
10976
10977         genlmsg_end(msg, hdr);
10978
10979         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
10980
10981  nla_put_failure:
10982         genlmsg_cancel(msg, hdr);
10983         nlmsg_free(msg);
10984         return -ENOBUFS;
10985 }
10986
10987 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
10988                              const u8 *buf, size_t len, bool ack, gfp_t gfp)
10989 {
10990         struct wiphy *wiphy = wdev->wiphy;
10991         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10992         struct net_device *netdev = wdev->netdev;
10993         struct sk_buff *msg;
10994         void *hdr;
10995
10996         trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
10997
10998         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10999         if (!msg)
11000                 return;
11001
11002         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
11003         if (!hdr) {
11004                 nlmsg_free(msg);
11005                 return;
11006         }
11007
11008         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11009             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11010                                    netdev->ifindex)) ||
11011             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
11012             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
11013             nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
11014             (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
11015                 goto nla_put_failure;
11016
11017         genlmsg_end(msg, hdr);
11018
11019         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11020                                 NL80211_MCGRP_MLME, gfp);
11021         return;
11022
11023  nla_put_failure:
11024         genlmsg_cancel(msg, hdr);
11025         nlmsg_free(msg);
11026 }
11027 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
11028
11029 void cfg80211_cqm_rssi_notify(struct net_device *dev,
11030                               enum nl80211_cqm_rssi_threshold_event rssi_event,
11031                               gfp_t gfp)
11032 {
11033         struct wireless_dev *wdev = dev->ieee80211_ptr;
11034         struct wiphy *wiphy = wdev->wiphy;
11035         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
11036         struct sk_buff *msg;
11037         struct nlattr *pinfoattr;
11038         void *hdr;
11039
11040         trace_cfg80211_cqm_rssi_notify(dev, rssi_event);
11041
11042         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11043         if (!msg)
11044                 return;
11045
11046         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
11047         if (!hdr) {
11048                 nlmsg_free(msg);
11049                 return;
11050         }
11051
11052         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11053             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
11054                 goto nla_put_failure;
11055
11056         pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
11057         if (!pinfoattr)
11058                 goto nla_put_failure;
11059
11060         if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
11061                         rssi_event))
11062                 goto nla_put_failure;
11063
11064         nla_nest_end(msg, pinfoattr);
11065
11066         genlmsg_end(msg, hdr);
11067
11068         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11069                                 NL80211_MCGRP_MLME, gfp);
11070         return;
11071
11072  nla_put_failure:
11073         genlmsg_cancel(msg, hdr);
11074         nlmsg_free(msg);
11075 }
11076 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
11077
11078 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
11079                                      struct net_device *netdev, const u8 *bssid,
11080                                      const u8 *replay_ctr, gfp_t gfp)
11081 {
11082         struct sk_buff *msg;
11083         struct nlattr *rekey_attr;
11084         void *hdr;
11085
11086         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11087         if (!msg)
11088                 return;
11089
11090         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
11091         if (!hdr) {
11092                 nlmsg_free(msg);
11093                 return;
11094         }
11095
11096         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11097             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11098             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
11099                 goto nla_put_failure;
11100
11101         rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
11102         if (!rekey_attr)
11103                 goto nla_put_failure;
11104
11105         if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
11106                     NL80211_REPLAY_CTR_LEN, replay_ctr))
11107                 goto nla_put_failure;
11108
11109         nla_nest_end(msg, rekey_attr);
11110
11111         genlmsg_end(msg, hdr);
11112
11113         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11114                                 NL80211_MCGRP_MLME, gfp);
11115         return;
11116
11117  nla_put_failure:
11118         genlmsg_cancel(msg, hdr);
11119         nlmsg_free(msg);
11120 }
11121
11122 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
11123                                const u8 *replay_ctr, gfp_t gfp)
11124 {
11125         struct wireless_dev *wdev = dev->ieee80211_ptr;
11126         struct wiphy *wiphy = wdev->wiphy;
11127         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
11128
11129         trace_cfg80211_gtk_rekey_notify(dev, bssid);
11130         nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
11131 }
11132 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
11133
11134 static void
11135 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
11136                                struct net_device *netdev, int index,
11137                                const u8 *bssid, bool preauth, gfp_t gfp)
11138 {
11139         struct sk_buff *msg;
11140         struct nlattr *attr;
11141         void *hdr;
11142
11143         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11144         if (!msg)
11145                 return;
11146
11147         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
11148         if (!hdr) {
11149                 nlmsg_free(msg);
11150                 return;
11151         }
11152
11153         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11154             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
11155                 goto nla_put_failure;
11156
11157         attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
11158         if (!attr)
11159                 goto nla_put_failure;
11160
11161         if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
11162             nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
11163             (preauth &&
11164              nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
11165                 goto nla_put_failure;
11166
11167         nla_nest_end(msg, attr);
11168
11169         genlmsg_end(msg, hdr);
11170
11171         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11172                                 NL80211_MCGRP_MLME, gfp);
11173         return;
11174
11175  nla_put_failure:
11176         genlmsg_cancel(msg, hdr);
11177         nlmsg_free(msg);
11178 }
11179
11180 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
11181                                      const u8 *bssid, bool preauth, gfp_t gfp)
11182 {
11183         struct wireless_dev *wdev = dev->ieee80211_ptr;
11184         struct wiphy *wiphy = wdev->wiphy;
11185         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
11186
11187         trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
11188         nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
11189 }
11190 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
11191
11192 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
11193                                      struct net_device *netdev,
11194                                      struct cfg80211_chan_def *chandef,
11195                                      gfp_t gfp)
11196 {
11197         struct sk_buff *msg;
11198         void *hdr;
11199
11200         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11201         if (!msg)
11202                 return;
11203
11204         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CH_SWITCH_NOTIFY);
11205         if (!hdr) {
11206                 nlmsg_free(msg);
11207                 return;
11208         }
11209
11210         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
11211                 goto nla_put_failure;
11212
11213         if (nl80211_send_chandef(msg, chandef))
11214                 goto nla_put_failure;
11215
11216         genlmsg_end(msg, hdr);
11217
11218         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11219                                 NL80211_MCGRP_MLME, gfp);
11220         return;
11221
11222  nla_put_failure:
11223         genlmsg_cancel(msg, hdr);
11224         nlmsg_free(msg);
11225 }
11226
11227 void cfg80211_ch_switch_notify(struct net_device *dev,
11228                                struct cfg80211_chan_def *chandef)
11229 {
11230         struct wireless_dev *wdev = dev->ieee80211_ptr;
11231         struct wiphy *wiphy = wdev->wiphy;
11232         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
11233
11234         ASSERT_WDEV_LOCK(wdev);
11235
11236         trace_cfg80211_ch_switch_notify(dev, chandef);
11237
11238         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
11239                     wdev->iftype != NL80211_IFTYPE_P2P_GO &&
11240                     wdev->iftype != NL80211_IFTYPE_ADHOC &&
11241                     wdev->iftype != NL80211_IFTYPE_MESH_POINT))
11242                 return;
11243
11244         wdev->chandef = *chandef;
11245         wdev->preset_chandef = *chandef;
11246         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL);
11247 }
11248 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
11249
11250 void cfg80211_cqm_txe_notify(struct net_device *dev,
11251                              const u8 *peer, u32 num_packets,
11252                              u32 rate, u32 intvl, gfp_t gfp)
11253 {
11254         struct wireless_dev *wdev = dev->ieee80211_ptr;
11255         struct wiphy *wiphy = wdev->wiphy;
11256         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
11257         struct sk_buff *msg;
11258         struct nlattr *pinfoattr;
11259         void *hdr;
11260
11261         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
11262         if (!msg)
11263                 return;
11264
11265         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
11266         if (!hdr) {
11267                 nlmsg_free(msg);
11268                 return;
11269         }
11270
11271         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11272             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11273             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer))
11274                 goto nla_put_failure;
11275
11276         pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
11277         if (!pinfoattr)
11278                 goto nla_put_failure;
11279
11280         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
11281                 goto nla_put_failure;
11282
11283         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
11284                 goto nla_put_failure;
11285
11286         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
11287                 goto nla_put_failure;
11288
11289         nla_nest_end(msg, pinfoattr);
11290
11291         genlmsg_end(msg, hdr);
11292
11293         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11294                                 NL80211_MCGRP_MLME, gfp);
11295         return;
11296
11297  nla_put_failure:
11298         genlmsg_cancel(msg, hdr);
11299         nlmsg_free(msg);
11300 }
11301 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
11302
11303 void
11304 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
11305                      const struct cfg80211_chan_def *chandef,
11306                      enum nl80211_radar_event event,
11307                      struct net_device *netdev, gfp_t gfp)
11308 {
11309         struct sk_buff *msg;
11310         void *hdr;
11311
11312         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11313         if (!msg)
11314                 return;
11315
11316         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
11317         if (!hdr) {
11318                 nlmsg_free(msg);
11319                 return;
11320         }
11321
11322         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
11323                 goto nla_put_failure;
11324
11325         /* NOP and radar events don't need a netdev parameter */
11326         if (netdev) {
11327                 struct wireless_dev *wdev = netdev->ieee80211_ptr;
11328
11329                 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11330                     nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
11331                         goto nla_put_failure;
11332         }
11333
11334         if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
11335                 goto nla_put_failure;
11336
11337         if (nl80211_send_chandef(msg, chandef))
11338                 goto nla_put_failure;
11339
11340         genlmsg_end(msg, hdr);
11341
11342         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11343                                 NL80211_MCGRP_MLME, gfp);
11344         return;
11345
11346  nla_put_failure:
11347         genlmsg_cancel(msg, hdr);
11348         nlmsg_free(msg);
11349 }
11350
11351 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
11352                                  const u8 *peer, u32 num_packets, gfp_t gfp)
11353 {
11354         struct wireless_dev *wdev = dev->ieee80211_ptr;
11355         struct wiphy *wiphy = wdev->wiphy;
11356         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
11357         struct sk_buff *msg;
11358         struct nlattr *pinfoattr;
11359         void *hdr;
11360
11361         trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
11362
11363         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11364         if (!msg)
11365                 return;
11366
11367         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
11368         if (!hdr) {
11369                 nlmsg_free(msg);
11370                 return;
11371         }
11372
11373         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11374             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11375             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer))
11376                 goto nla_put_failure;
11377
11378         pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
11379         if (!pinfoattr)
11380                 goto nla_put_failure;
11381
11382         if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
11383                 goto nla_put_failure;
11384
11385         nla_nest_end(msg, pinfoattr);
11386
11387         genlmsg_end(msg, hdr);
11388
11389         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11390                                 NL80211_MCGRP_MLME, gfp);
11391         return;
11392
11393  nla_put_failure:
11394         genlmsg_cancel(msg, hdr);
11395         nlmsg_free(msg);
11396 }
11397 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
11398
11399 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
11400                            u64 cookie, bool acked, gfp_t gfp)
11401 {
11402         struct wireless_dev *wdev = dev->ieee80211_ptr;
11403         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
11404         struct sk_buff *msg;
11405         void *hdr;
11406
11407         trace_cfg80211_probe_status(dev, addr, cookie, acked);
11408
11409         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11410
11411         if (!msg)
11412                 return;
11413
11414         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
11415         if (!hdr) {
11416                 nlmsg_free(msg);
11417                 return;
11418         }
11419
11420         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11421             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11422             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
11423             nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
11424             (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
11425                 goto nla_put_failure;
11426
11427         genlmsg_end(msg, hdr);
11428
11429         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11430                                 NL80211_MCGRP_MLME, gfp);
11431         return;
11432
11433  nla_put_failure:
11434         genlmsg_cancel(msg, hdr);
11435         nlmsg_free(msg);
11436 }
11437 EXPORT_SYMBOL(cfg80211_probe_status);
11438
11439 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
11440                                  const u8 *frame, size_t len,
11441                                  int freq, int sig_dbm)
11442 {
11443         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
11444         struct sk_buff *msg;
11445         void *hdr;
11446         struct cfg80211_beacon_registration *reg;
11447
11448         trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
11449
11450         spin_lock_bh(&rdev->beacon_registrations_lock);
11451         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
11452                 msg = nlmsg_new(len + 100, GFP_ATOMIC);
11453                 if (!msg) {
11454                         spin_unlock_bh(&rdev->beacon_registrations_lock);
11455                         return;
11456                 }
11457
11458                 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
11459                 if (!hdr)
11460                         goto nla_put_failure;
11461
11462                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11463                     (freq &&
11464                      nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
11465                     (sig_dbm &&
11466                      nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
11467                     nla_put(msg, NL80211_ATTR_FRAME, len, frame))
11468                         goto nla_put_failure;
11469
11470                 genlmsg_end(msg, hdr);
11471
11472                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
11473         }
11474         spin_unlock_bh(&rdev->beacon_registrations_lock);
11475         return;
11476
11477  nla_put_failure:
11478         spin_unlock_bh(&rdev->beacon_registrations_lock);
11479         if (hdr)
11480                 genlmsg_cancel(msg, hdr);
11481         nlmsg_free(msg);
11482 }
11483 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
11484
11485 #ifdef CONFIG_PM
11486 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
11487                                    struct cfg80211_wowlan_wakeup *wakeup,
11488                                    gfp_t gfp)
11489 {
11490         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
11491         struct sk_buff *msg;
11492         void *hdr;
11493         int size = 200;
11494
11495         trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
11496
11497         if (wakeup)
11498                 size += wakeup->packet_present_len;
11499
11500         msg = nlmsg_new(size, gfp);
11501         if (!msg)
11502                 return;
11503
11504         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
11505         if (!hdr)
11506                 goto free_msg;
11507
11508         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11509             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
11510                 goto free_msg;
11511
11512         if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11513                                         wdev->netdev->ifindex))
11514                 goto free_msg;
11515
11516         if (wakeup) {
11517                 struct nlattr *reasons;
11518
11519                 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
11520                 if (!reasons)
11521                         goto free_msg;
11522
11523                 if (wakeup->disconnect &&
11524                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
11525                         goto free_msg;
11526                 if (wakeup->magic_pkt &&
11527                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
11528                         goto free_msg;
11529                 if (wakeup->gtk_rekey_failure &&
11530                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
11531                         goto free_msg;
11532                 if (wakeup->eap_identity_req &&
11533                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
11534                         goto free_msg;
11535                 if (wakeup->four_way_handshake &&
11536                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
11537                         goto free_msg;
11538                 if (wakeup->rfkill_release &&
11539                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
11540                         goto free_msg;
11541
11542                 if (wakeup->pattern_idx >= 0 &&
11543                     nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
11544                                 wakeup->pattern_idx))
11545                         goto free_msg;
11546
11547                 if (wakeup->tcp_match &&
11548                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
11549                         goto free_msg;
11550
11551                 if (wakeup->tcp_connlost &&
11552                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
11553                         goto free_msg;
11554
11555                 if (wakeup->tcp_nomoretokens &&
11556                     nla_put_flag(msg,
11557                                  NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
11558                         goto free_msg;
11559
11560                 if (wakeup->packet) {
11561                         u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
11562                         u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
11563
11564                         if (!wakeup->packet_80211) {
11565                                 pkt_attr =
11566                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
11567                                 len_attr =
11568                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
11569                         }
11570
11571                         if (wakeup->packet_len &&
11572                             nla_put_u32(msg, len_attr, wakeup->packet_len))
11573                                 goto free_msg;
11574
11575                         if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
11576                                     wakeup->packet))
11577                                 goto free_msg;
11578                 }
11579
11580                 nla_nest_end(msg, reasons);
11581         }
11582
11583         genlmsg_end(msg, hdr);
11584
11585         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11586                                 NL80211_MCGRP_MLME, gfp);
11587         return;
11588
11589  free_msg:
11590         nlmsg_free(msg);
11591 }
11592 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
11593 #endif
11594
11595 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
11596                                 enum nl80211_tdls_operation oper,
11597                                 u16 reason_code, gfp_t gfp)
11598 {
11599         struct wireless_dev *wdev = dev->ieee80211_ptr;
11600         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
11601         struct sk_buff *msg;
11602         void *hdr;
11603
11604         trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
11605                                          reason_code);
11606
11607         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11608         if (!msg)
11609                 return;
11610
11611         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
11612         if (!hdr) {
11613                 nlmsg_free(msg);
11614                 return;
11615         }
11616
11617         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11618             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11619             nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
11620             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
11621             (reason_code > 0 &&
11622              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
11623                 goto nla_put_failure;
11624
11625         genlmsg_end(msg, hdr);
11626
11627         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11628                                 NL80211_MCGRP_MLME, gfp);
11629         return;
11630
11631  nla_put_failure:
11632         genlmsg_cancel(msg, hdr);
11633         nlmsg_free(msg);
11634 }
11635 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
11636
11637 static int nl80211_netlink_notify(struct notifier_block * nb,
11638                                   unsigned long state,
11639                                   void *_notify)
11640 {
11641         struct netlink_notify *notify = _notify;
11642         struct cfg80211_registered_device *rdev;
11643         struct wireless_dev *wdev;
11644         struct cfg80211_beacon_registration *reg, *tmp;
11645
11646         if (state != NETLINK_URELEASE)
11647                 return NOTIFY_DONE;
11648
11649         rcu_read_lock();
11650
11651         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
11652                 list_for_each_entry_rcu(wdev, &rdev->wdev_list, list)
11653                         cfg80211_mlme_unregister_socket(wdev, notify->portid);
11654
11655                 spin_lock_bh(&rdev->beacon_registrations_lock);
11656                 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
11657                                          list) {
11658                         if (reg->nlportid == notify->portid) {
11659                                 list_del(&reg->list);
11660                                 kfree(reg);
11661                                 break;
11662                         }
11663                 }
11664                 spin_unlock_bh(&rdev->beacon_registrations_lock);
11665         }
11666
11667         rcu_read_unlock();
11668
11669         return NOTIFY_DONE;
11670 }
11671
11672 static struct notifier_block nl80211_netlink_notifier = {
11673         .notifier_call = nl80211_netlink_notify,
11674 };
11675
11676 void cfg80211_ft_event(struct net_device *netdev,
11677                        struct cfg80211_ft_event_params *ft_event)
11678 {
11679         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
11680         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
11681         struct sk_buff *msg;
11682         void *hdr;
11683
11684         trace_cfg80211_ft_event(wiphy, netdev, ft_event);
11685
11686         if (!ft_event->target_ap)
11687                 return;
11688
11689         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11690         if (!msg)
11691                 return;
11692
11693         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
11694         if (!hdr)
11695                 goto out;
11696
11697         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11698             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11699             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
11700                 goto out;
11701
11702         if (ft_event->ies &&
11703             nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
11704                 goto out;
11705         if (ft_event->ric_ies &&
11706             nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
11707                     ft_event->ric_ies))
11708                 goto out;
11709
11710         genlmsg_end(msg, hdr);
11711
11712         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11713                                 NL80211_MCGRP_MLME, GFP_KERNEL);
11714         return;
11715  out:
11716         nlmsg_free(msg);
11717 }
11718 EXPORT_SYMBOL(cfg80211_ft_event);
11719
11720 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
11721 {
11722         struct cfg80211_registered_device *rdev;
11723         struct sk_buff *msg;
11724         void *hdr;
11725         u32 nlportid;
11726
11727         rdev = wiphy_to_dev(wdev->wiphy);
11728         if (!rdev->crit_proto_nlportid)
11729                 return;
11730
11731         nlportid = rdev->crit_proto_nlportid;
11732         rdev->crit_proto_nlportid = 0;
11733
11734         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11735         if (!msg)
11736                 return;
11737
11738         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
11739         if (!hdr)
11740                 goto nla_put_failure;
11741
11742         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11743             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
11744                 goto nla_put_failure;
11745
11746         genlmsg_end(msg, hdr);
11747
11748         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
11749         return;
11750
11751  nla_put_failure:
11752         if (hdr)
11753                 genlmsg_cancel(msg, hdr);
11754         nlmsg_free(msg);
11755
11756 }
11757 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
11758
11759 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
11760 {
11761         struct wiphy *wiphy = wdev->wiphy;
11762         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
11763         struct sk_buff *msg;
11764         void *hdr;
11765
11766         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11767         if (!msg)
11768                 return;
11769
11770         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
11771         if (!hdr)
11772                 goto out;
11773
11774         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11775             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
11776             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
11777                 goto out;
11778
11779         genlmsg_end(msg, hdr);
11780
11781         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
11782                                 NL80211_MCGRP_MLME, GFP_KERNEL);
11783         return;
11784  out:
11785         nlmsg_free(msg);
11786 }
11787
11788 /* initialisation/exit functions */
11789
11790 int nl80211_init(void)
11791 {
11792         int err;
11793
11794         err = genl_register_family_with_ops_groups(&nl80211_fam, nl80211_ops,
11795                                                    nl80211_mcgrps);
11796         if (err)
11797                 return err;
11798
11799         err = netlink_register_notifier(&nl80211_netlink_notifier);
11800         if (err)
11801                 goto err_out;
11802
11803         return 0;
11804  err_out:
11805         genl_unregister_family(&nl80211_fam);
11806         return err;
11807 }
11808
11809 void nl80211_exit(void)
11810 {
11811         netlink_unregister_notifier(&nl80211_netlink_notifier);
11812         genl_unregister_family(&nl80211_fam);
11813 }