net/mac80211/cfg.c

   1 /*
   2  * mac80211 configuration hooks for cfg80211
   3  *
   4  * Copyright 2006-2010  Johannes Berg <johannes@sipsolutions.net>
   5  *
   6  * This file is GPLv2 as found in COPYING.
   7  */
   8
   9 #include <linux/ieee80211.h>
  10 #include <linux/nl80211.h>
  11 #include <linux/rtnetlink.h>
  12 #include <linux/slab.h>
  13 #include <net/net_namespace.h>
  14 #include <linux/rcupdate.h>
  15 #include <linux/if_ether.h>
  16 #include <net/cfg80211.h>
  17 #include "ieee80211_i.h"
  18 #include "driver-ops.h"
  19 #include "cfg.h"
  20 #include "rate.h"
  21 #include "mesh.h"
  22
  23 static struct wireless_dev *ieee80211_add_iface(struct wiphy *wiphy,
  24                                                 const char *name,
  25                                                 enum nl80211_iftype type,
  26                                                 u32 *flags,
  27                                                 struct vif_params *params)
  28 {
  29         struct ieee80211_local *local = wiphy_priv(wiphy);
  30         struct wireless_dev *wdev;
  31         struct ieee80211_sub_if_data *sdata;
  32         int err;
  33
  34         err = ieee80211_if_add(local, name, &wdev, type, params);
  35         if (err)
  36                 return ERR_PTR(err);
  37
  38         if (type == NL80211_IFTYPE_MONITOR && flags) {
  39                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
  40                 sdata->u.mntr_flags = *flags;
  41         }
  42
  43         return wdev;
  44 }
  45
  46 static int ieee80211_del_iface(struct wiphy *wiphy, struct wireless_dev *wdev)
  47 {
  48         ieee80211_if_remove(IEEE80211_WDEV_TO_SUB_IF(wdev));
  49
  50         return 0;
  51 }
  52
  53 static int ieee80211_change_iface(struct wiphy *wiphy,
  54                                   struct net_device *dev,
  55                                   enum nl80211_iftype type, u32 *flags,
  56                                   struct vif_params *params)
  57 {
  58         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  59         int ret;
  60
  61         ret = ieee80211_if_change_type(sdata, type);
  62         if (ret)
  63                 return ret;
  64
  65         if (type == NL80211_IFTYPE_AP_VLAN &&
  66             params && params->use_4addr == 0)
  67                 RCU_INIT_POINTER(sdata->u.vlan.sta, NULL);
  68         else if (type == NL80211_IFTYPE_STATION &&
  69                  params && params->use_4addr >= 0)
  70                 sdata->u.mgd.use_4addr = params->use_4addr;
  71
  72         if (sdata->vif.type == NL80211_IFTYPE_MONITOR && flags) {
  73                 struct ieee80211_local *local = sdata->local;
  74
  75                 if (ieee80211_sdata_running(sdata)) {
  76                         u32 mask = MONITOR_FLAG_COOK_FRAMES |
  77                                    MONITOR_FLAG_ACTIVE;
  78
  79                         /*
  80                          * Prohibit MONITOR_FLAG_COOK_FRAMES and
  81                          * MONITOR_FLAG_ACTIVE to be changed while the
  82                          * interface is up.
  83                          * Else we would need to add a lot of cruft
  84                          * to update everything:
  85                          *      cooked_mntrs, monitor and all fif_* counters
  86                          *      reconfigure hardware
  87                          */
  88                         if ((*flags & mask) != (sdata->u.mntr_flags & mask))
  89                                 return -EBUSY;
  90
  91                         ieee80211_adjust_monitor_flags(sdata, -1);
  92                         sdata->u.mntr_flags = *flags;
  93                         ieee80211_adjust_monitor_flags(sdata, 1);
  94
  95                         ieee80211_configure_filter(local);
  96                 } else {
  97                         /*
  98                          * Because the interface is down, ieee80211_do_stop
  99                          * and ieee80211_do_open take care of "everything"
 100                          * mentioned in the comment above.
 101                          */
 102                         sdata->u.mntr_flags = *flags;
 103                 }
 104         }
 105
 106         return 0;
 107 }
 108
 109 static int ieee80211_start_p2p_device(struct wiphy *wiphy,
 110                                       struct wireless_dev *wdev)
 111 {
 112         return ieee80211_do_open(wdev, true);
 113 }
 114
 115 static void ieee80211_stop_p2p_device(struct wiphy *wiphy,
 116                                       struct wireless_dev *wdev)
 117 {
 118         ieee80211_sdata_stop(IEEE80211_WDEV_TO_SUB_IF(wdev));
 119 }
 120
 121 static int ieee80211_set_noack_map(struct wiphy *wiphy,
 122                                   struct net_device *dev,
 123                                   u16 noack_map)
 124 {
 125         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 126
 127         sdata->noack_map = noack_map;
 128         return 0;
 129 }
 130
 131 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
 132                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 133                              struct key_params *params)
 134 {
 135         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 136         struct ieee80211_local *local = sdata->local;
 137         struct sta_info *sta = NULL;
 138         const struct ieee80211_cipher_scheme *cs = NULL;
 139         struct ieee80211_key *key;
 140         int err;
 141
 142         if (!ieee80211_sdata_running(sdata))
 143                 return -ENETDOWN;
 144
 145         /* reject WEP and TKIP keys if WEP failed to initialize */
 146         switch (params->cipher) {
 147         case WLAN_CIPHER_SUITE_WEP40:
 148         case WLAN_CIPHER_SUITE_TKIP:
 149         case WLAN_CIPHER_SUITE_WEP104:
 150                 if (IS_ERR(local->wep_tx_tfm))
 151                         return -EINVAL;
 152                 break;
 153         case WLAN_CIPHER_SUITE_CCMP:
 154         case WLAN_CIPHER_SUITE_AES_CMAC:
 155         case WLAN_CIPHER_SUITE_GCMP:
 156                 break;
 157         default:
 158                 cs = ieee80211_cs_get(local, params->cipher, sdata->vif.type);
 159                 break;
 160         }
 161
 162         key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
 163                                   params->key, params->seq_len, params->seq,
 164                                   cs);
 165         if (IS_ERR(key))
 166                 return PTR_ERR(key);
 167
 168         if (pairwise)
 169                 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
 170
 171         mutex_lock(&local->sta_mtx);
 172
 173         if (mac_addr) {
 174                 if (ieee80211_vif_is_mesh(&sdata->vif))
 175                         sta = sta_info_get(sdata, mac_addr);
 176                 else
 177                         sta = sta_info_get_bss(sdata, mac_addr);
 178                 /*
 179                  * The ASSOC test makes sure the driver is ready to
 180                  * receive the key. When wpa_supplicant has roamed
 181                  * using FT, it attempts to set the key before
 182                  * association has completed, this rejects that attempt
 183                  * so it will set the key again after assocation.
 184                  *
 185                  * TODO: accept the key if we have a station entry and
 186                  *       add it to the device after the station.
 187                  */
 188                 if (!sta || !test_sta_flag(sta, WLAN_STA_ASSOC)) {
 189                         ieee80211_key_free_unused(key);
 190                         err = -ENOENT;
 191                         goto out_unlock;
 192                 }
 193         }
 194
 195         switch (sdata->vif.type) {
 196         case NL80211_IFTYPE_STATION:
 197                 if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED)
 198                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 199                 break;
 200         case NL80211_IFTYPE_AP:
 201         case NL80211_IFTYPE_AP_VLAN:
 202                 /* Keys without a station are used for TX only */
 203                 if (key->sta && test_sta_flag(key->sta, WLAN_STA_MFP))
 204                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 205                 break;
 206         case NL80211_IFTYPE_ADHOC:
 207                 /* no MFP (yet) */
 208                 break;
 209         case NL80211_IFTYPE_MESH_POINT:
 210 #ifdef CONFIG_MAC80211_MESH
 211                 if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE)
 212                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 213                 break;
 214 #endif
 215         case NL80211_IFTYPE_WDS:
 216         case NL80211_IFTYPE_MONITOR:
 217         case NL80211_IFTYPE_P2P_DEVICE:
 218         case NL80211_IFTYPE_UNSPECIFIED:
 219         case NUM_NL80211_IFTYPES:
 220         case NL80211_IFTYPE_P2P_CLIENT:
 221         case NL80211_IFTYPE_P2P_GO:
 222                 /* shouldn't happen */
 223                 WARN_ON_ONCE(1);
 224                 break;
 225         }
 226
 227         if (sta)
 228                 sta->cipher_scheme = cs;
 229
 230         err = ieee80211_key_link(key, sdata, sta);
 231
 232  out_unlock:
 233         mutex_unlock(&local->sta_mtx);
 234
 235         return err;
 236 }
 237
 238 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
 239                              u8 key_idx, bool pairwise, const u8 *mac_addr)
 240 {
 241         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 242         struct ieee80211_local *local = sdata->local;
 243         struct sta_info *sta;
 244         struct ieee80211_key *key = NULL;
 245         int ret;
 246
 247         mutex_lock(&local->sta_mtx);
 248         mutex_lock(&local->key_mtx);
 249
 250         if (mac_addr) {
 251                 ret = -ENOENT;
 252
 253                 sta = sta_info_get_bss(sdata, mac_addr);
 254                 if (!sta)
 255                         goto out_unlock;
 256
 257                 if (pairwise)
 258                         key = key_mtx_dereference(local, sta->ptk[key_idx]);
 259                 else
 260                         key = key_mtx_dereference(local, sta->gtk[key_idx]);
 261         } else
 262                 key = key_mtx_dereference(local, sdata->keys[key_idx]);
 263
 264         if (!key) {
 265                 ret = -ENOENT;
 266                 goto out_unlock;
 267         }
 268
 269         ieee80211_key_free(key, true);
 270
 271         ret = 0;
 272  out_unlock:
 273         mutex_unlock(&local->key_mtx);
 274         mutex_unlock(&local->sta_mtx);
 275
 276         return ret;
 277 }
 278
 279 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
 280                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 281                              void *cookie,
 282                              void (*callback)(void *cookie,
 283                                               struct key_params *params))
 284 {
 285         struct ieee80211_sub_if_data *sdata;
 286         struct sta_info *sta = NULL;
 287         u8 seq[6] = {0};
 288         struct key_params params;
 289         struct ieee80211_key *key = NULL;
 290         u64 pn64;
 291         u32 iv32;
 292         u16 iv16;
 293         int err = -ENOENT;
 294
 295         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 296
 297         rcu_read_lock();
 298
 299         if (mac_addr) {
 300                 sta = sta_info_get_bss(sdata, mac_addr);
 301                 if (!sta)
 302                         goto out;
 303
 304                 if (pairwise)
 305                         key = rcu_dereference(sta->ptk[key_idx]);
 306                 else if (key_idx < NUM_DEFAULT_KEYS)
 307                         key = rcu_dereference(sta->gtk[key_idx]);
 308         } else
 309                 key = rcu_dereference(sdata->keys[key_idx]);
 310
 311         if (!key)
 312                 goto out;
 313
 314         memset(&params, 0, sizeof(params));
 315
 316         params.cipher = key->conf.cipher;
 317
 318         switch (key->conf.cipher) {
 319         case WLAN_CIPHER_SUITE_TKIP:
 320                 iv32 = key->u.tkip.tx.iv32;
 321                 iv16 = key->u.tkip.tx.iv16;
 322
 323                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)
 324                         drv_get_tkip_seq(sdata->local,
 325                                          key->conf.hw_key_idx,
 326                                          &iv32, &iv16);
 327
 328                 seq[0] = iv16 & 0xff;
 329                 seq[1] = (iv16 >> 8) & 0xff;
 330                 seq[2] = iv32 & 0xff;
 331                 seq[3] = (iv32 >> 8) & 0xff;
 332                 seq[4] = (iv32 >> 16) & 0xff;
 333                 seq[5] = (iv32 >> 24) & 0xff;
 334                 params.seq = seq;
 335                 params.seq_len = 6;
 336                 break;
 337         case WLAN_CIPHER_SUITE_CCMP:
 338                 pn64 = atomic64_read(&key->u.ccmp.tx_pn);
 339                 seq[0] = pn64;
 340                 seq[1] = pn64 >> 8;
 341                 seq[2] = pn64 >> 16;
 342                 seq[3] = pn64 >> 24;
 343                 seq[4] = pn64 >> 32;
 344                 seq[5] = pn64 >> 40;
 345                 params.seq = seq;
 346                 params.seq_len = 6;
 347                 break;
 348         case WLAN_CIPHER_SUITE_AES_CMAC:
 349                 pn64 = atomic64_read(&key->u.aes_cmac.tx_pn);
 350                 seq[0] = pn64;
 351                 seq[1] = pn64 >> 8;
 352                 seq[2] = pn64 >> 16;
 353                 seq[3] = pn64 >> 24;
 354                 seq[4] = pn64 >> 32;
 355                 seq[5] = pn64 >> 40;
 356                 params.seq = seq;
 357                 params.seq_len = 6;
 358                 break;
 359         }
 360
 361         params.key = key->conf.key;
 362         params.key_len = key->conf.keylen;
 363
 364         callback(cookie, &params);
 365         err = 0;
 366
 367  out:
 368         rcu_read_unlock();
 369         return err;
 370 }
 371
 372 static int ieee80211_config_default_key(struct wiphy *wiphy,
 373                                         struct net_device *dev,
 374                                         u8 key_idx, bool uni,
 375                                         bool multi)
 376 {
 377         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 378
 379         ieee80211_set_default_key(sdata, key_idx, uni, multi);
 380
 381         return 0;
 382 }
 383
 384 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
 385                                              struct net_device *dev,
 386                                              u8 key_idx)
 387 {
 388         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 389
 390         ieee80211_set_default_mgmt_key(sdata, key_idx);
 391
 392         return 0;
 393 }
 394
 395 void sta_set_rate_info_tx(struct sta_info *sta,
 396                           const struct ieee80211_tx_rate *rate,
 397                           struct rate_info *rinfo)
 398 {
 399         rinfo->flags = 0;
 400         if (rate->flags & IEEE80211_TX_RC_MCS) {
 401                 rinfo->flags |= RATE_INFO_FLAGS_MCS;
 402                 rinfo->mcs = rate->idx;
 403         } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) {
 404                 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
 405                 rinfo->mcs = ieee80211_rate_get_vht_mcs(rate);
 406                 rinfo->nss = ieee80211_rate_get_vht_nss(rate);
 407         } else {
 408                 struct ieee80211_supported_band *sband;
 409                 int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
 410                 u16 brate;
 411
 412                 sband = sta->local->hw.wiphy->bands[
 413                                 ieee80211_get_sdata_band(sta->sdata)];
 414                 brate = sband->bitrates[rate->idx].bitrate;
 415                 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
 416         }
 417         if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 418                 rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 419         if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
 420                 rinfo->flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH;
 421         if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
 422                 rinfo->flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH;
 423         if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
 424                 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
 425 }
 426
 427 void sta_set_rate_info_rx(struct sta_info *sta, struct rate_info *rinfo)
 428 {
 429         rinfo->flags = 0;
 430
 431         if (sta->last_rx_rate_flag & RX_FLAG_HT) {
 432                 rinfo->flags |= RATE_INFO_FLAGS_MCS;
 433                 rinfo->mcs = sta->last_rx_rate_idx;
 434         } else if (sta->last_rx_rate_flag & RX_FLAG_VHT) {
 435                 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
 436                 rinfo->nss = sta->last_rx_rate_vht_nss;
 437                 rinfo->mcs = sta->last_rx_rate_idx;
 438         } else {
 439                 struct ieee80211_supported_band *sband;
 440                 int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
 441                 u16 brate;
 442
 443                 sband = sta->local->hw.wiphy->bands[
 444                                 ieee80211_get_sdata_band(sta->sdata)];
 445                 brate = sband->bitrates[sta->last_rx_rate_idx].bitrate;
 446                 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
 447         }
 448
 449         if (sta->last_rx_rate_flag & RX_FLAG_40MHZ)
 450                 rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 451         if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI)
 452                 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
 453         if (sta->last_rx_rate_flag & RX_FLAG_80MHZ)
 454                 rinfo->flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH;
 455         if (sta->last_rx_rate_flag & RX_FLAG_80P80MHZ)
 456                 rinfo->flags |= RATE_INFO_FLAGS_80P80_MHZ_WIDTH;
 457         if (sta->last_rx_rate_flag & RX_FLAG_160MHZ)
 458                 rinfo->flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH;
 459 }
 460
 461 static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
 462 {
 463         struct ieee80211_sub_if_data *sdata = sta->sdata;
 464         struct ieee80211_local *local = sdata->local;
 465         struct timespec uptime;
 466         u64 packets = 0;
 467         int i, ac;
 468
 469         sinfo->generation = sdata->local->sta_generation;
 470
 471         sinfo->filled = STATION_INFO_INACTIVE_TIME |
 472                         STATION_INFO_RX_BYTES64 |
 473                         STATION_INFO_TX_BYTES64 |
 474                         STATION_INFO_RX_PACKETS |
 475                         STATION_INFO_TX_PACKETS |
 476                         STATION_INFO_TX_RETRIES |
 477                         STATION_INFO_TX_FAILED |
 478                         STATION_INFO_TX_BITRATE |
 479                         STATION_INFO_RX_BITRATE |
 480                         STATION_INFO_RX_DROP_MISC |
 481                         STATION_INFO_BSS_PARAM |
 482                         STATION_INFO_CONNECTED_TIME |
 483                         STATION_INFO_STA_FLAGS |
 484                         STATION_INFO_BEACON_LOSS_COUNT;
 485
 486         do_posix_clock_monotonic_gettime(&uptime);
 487         sinfo->connected_time = uptime.tv_sec - sta->last_connected;
 488
 489         sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx);
 490         sinfo->tx_bytes = 0;
 491         for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
 492                 sinfo->tx_bytes += sta->tx_bytes[ac];
 493                 packets += sta->tx_packets[ac];
 494         }
 495         sinfo->tx_packets = packets;
 496         sinfo->rx_bytes = sta->rx_bytes;
 497         sinfo->rx_packets = sta->rx_packets;
 498         sinfo->tx_retries = sta->tx_retry_count;
 499         sinfo->tx_failed = sta->tx_retry_failed;
 500         sinfo->rx_dropped_misc = sta->rx_dropped;
 501         sinfo->beacon_loss_count = sta->beacon_loss_count;
 502
 503         if ((sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) ||
 504             (sta->local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)) {
 505                 sinfo->filled |= STATION_INFO_SIGNAL | STATION_INFO_SIGNAL_AVG;
 506                 if (!local->ops->get_rssi ||
 507                     drv_get_rssi(local, sdata, &sta->sta, &sinfo->signal))
 508                         sinfo->signal = (s8)sta->last_signal;
 509                 sinfo->signal_avg = (s8) -ewma_read(&sta->avg_signal);
 510         }
 511         if (sta->chains) {
 512                 sinfo->filled |= STATION_INFO_CHAIN_SIGNAL |
 513                                  STATION_INFO_CHAIN_SIGNAL_AVG;
 514
 515                 sinfo->chains = sta->chains;
 516                 for (i = 0; i < ARRAY_SIZE(sinfo->chain_signal); i++) {
 517                         sinfo->chain_signal[i] = sta->chain_signal_last[i];
 518                         sinfo->chain_signal_avg[i] =
 519                                 (s8) -ewma_read(&sta->chain_signal_avg[i]);
 520                 }
 521         }
 522
 523         sta_set_rate_info_tx(sta, &sta->last_tx_rate, &sinfo->txrate);
 524         sta_set_rate_info_rx(sta, &sinfo->rxrate);
 525
 526         if (ieee80211_vif_is_mesh(&sdata->vif)) {
 527 #ifdef CONFIG_MAC80211_MESH
 528                 sinfo->filled |= STATION_INFO_LLID |
 529                                  STATION_INFO_PLID |
 530                                  STATION_INFO_PLINK_STATE |
 531                                  STATION_INFO_LOCAL_PM |
 532                                  STATION_INFO_PEER_PM |
 533                                  STATION_INFO_NONPEER_PM;
 534
 535                 sinfo->llid = sta->llid;
 536                 sinfo->plid = sta->plid;
 537                 sinfo->plink_state = sta->plink_state;
 538                 if (test_sta_flag(sta, WLAN_STA_TOFFSET_KNOWN)) {
 539                         sinfo->filled |= STATION_INFO_T_OFFSET;
 540                         sinfo->t_offset = sta->t_offset;
 541                 }
 542                 sinfo->local_pm = sta->local_pm;
 543                 sinfo->peer_pm = sta->peer_pm;
 544                 sinfo->nonpeer_pm = sta->nonpeer_pm;
 545 #endif
 546         }
 547
 548         sinfo->bss_param.flags = 0;
 549         if (sdata->vif.bss_conf.use_cts_prot)
 550                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_CTS_PROT;
 551         if (sdata->vif.bss_conf.use_short_preamble)
 552                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_PREAMBLE;
 553         if (sdata->vif.bss_conf.use_short_slot)
 554                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME;
 555         sinfo->bss_param.dtim_period = sdata->local->hw.conf.ps_dtim_period;
 556         sinfo->bss_param.beacon_interval = sdata->vif.bss_conf.beacon_int;
 557
 558         sinfo->sta_flags.set = 0;
 559         sinfo->sta_flags.mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
 560                                 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
 561                                 BIT(NL80211_STA_FLAG_WME) |
 562                                 BIT(NL80211_STA_FLAG_MFP) |
 563                                 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
 564                                 BIT(NL80211_STA_FLAG_ASSOCIATED) |
 565                                 BIT(NL80211_STA_FLAG_TDLS_PEER);
 566         if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
 567                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHORIZED);
 568         if (test_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE))
 569                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
 570         if (test_sta_flag(sta, WLAN_STA_WME))
 571                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_WME);
 572         if (test_sta_flag(sta, WLAN_STA_MFP))
 573                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_MFP);
 574         if (test_sta_flag(sta, WLAN_STA_AUTH))
 575                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHENTICATED);
 576         if (test_sta_flag(sta, WLAN_STA_ASSOC))
 577                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
 578         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER))
 579                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_TDLS_PEER);
 580 }
 581
 582 static const char ieee80211_gstrings_sta_stats[][ETH_GSTRING_LEN] = {
 583         "rx_packets", "rx_bytes", "wep_weak_iv_count",
 584         "rx_duplicates", "rx_fragments", "rx_dropped",
 585         "tx_packets", "tx_bytes", "tx_fragments",
 586         "tx_filtered", "tx_retry_failed", "tx_retries",
 587         "beacon_loss", "sta_state", "txrate", "rxrate", "signal",
 588         "channel", "noise", "ch_time", "ch_time_busy",
 589         "ch_time_ext_busy", "ch_time_rx", "ch_time_tx"
 590 };
 591 #define STA_STATS_LEN   ARRAY_SIZE(ieee80211_gstrings_sta_stats)
 592
 593 static int ieee80211_get_et_sset_count(struct wiphy *wiphy,
 594                                        struct net_device *dev,
 595                                        int sset)
 596 {
 597         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 598         int rv = 0;
 599
 600         if (sset == ETH_SS_STATS)
 601                 rv += STA_STATS_LEN;
 602
 603         rv += drv_get_et_sset_count(sdata, sset);
 604
 605         if (rv == 0)
 606                 return -EOPNOTSUPP;
 607         return rv;
 608 }
 609
 610 static void ieee80211_get_et_stats(struct wiphy *wiphy,
 611                                    struct net_device *dev,
 612                                    struct ethtool_stats *stats,
 613                                    u64 *data)
 614 {
 615         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 616         struct ieee80211_chanctx_conf *chanctx_conf;
 617         struct ieee80211_channel *channel;
 618         struct sta_info *sta;
 619         struct ieee80211_local *local = sdata->local;
 620         struct station_info sinfo;
 621         struct survey_info survey;
 622         int i, q;
 623 #define STA_STATS_SURVEY_LEN 7
 624
 625         memset(data, 0, sizeof(u64) * STA_STATS_LEN);
 626
 627 #define ADD_STA_STATS(sta)                              \
 628         do {                                            \
 629                 data[i++] += sta->rx_packets;           \
 630                 data[i++] += sta->rx_bytes;             \
 631                 data[i++] += sta->wep_weak_iv_count;    \
 632                 data[i++] += sta->num_duplicates;       \
 633                 data[i++] += sta->rx_fragments;         \
 634                 data[i++] += sta->rx_dropped;           \
 635                                                         \
 636                 data[i++] += sinfo.tx_packets;          \
 637                 data[i++] += sinfo.tx_bytes;            \
 638                 data[i++] += sta->tx_fragments;         \
 639                 data[i++] += sta->tx_filtered_count;    \
 640                 data[i++] += sta->tx_retry_failed;      \
 641                 data[i++] += sta->tx_retry_count;       \
 642                 data[i++] += sta->beacon_loss_count;    \
 643         } while (0)
 644
 645         /* For Managed stations, find the single station based on BSSID
 646          * and use that.  For interface types, iterate through all available
 647          * stations and add stats for any station that is assigned to this
 648          * network device.
 649          */
 650
 651         mutex_lock(&local->sta_mtx);
 652
 653         if (sdata->vif.type == NL80211_IFTYPE_STATION) {
 654                 sta = sta_info_get_bss(sdata, sdata->u.mgd.bssid);
 655
 656                 if (!(sta && !WARN_ON(sta->sdata->dev != dev)))
 657                         goto do_survey;
 658
 659                 sinfo.filled = 0;
 660                 sta_set_sinfo(sta, &sinfo);
 661
 662                 i = 0;
 663                 ADD_STA_STATS(sta);
 664
 665                 data[i++] = sta->sta_state;
 666
 667
 668                 if (sinfo.filled & STATION_INFO_TX_BITRATE)
 669                         data[i] = 100000 *
 670                                 cfg80211_calculate_bitrate(&sinfo.txrate);
 671                 i++;
 672                 if (sinfo.filled & STATION_INFO_RX_BITRATE)
 673                         data[i] = 100000 *
 674                                 cfg80211_calculate_bitrate(&sinfo.rxrate);
 675                 i++;
 676
 677                 if (sinfo.filled & STATION_INFO_SIGNAL_AVG)
 678                         data[i] = (u8)sinfo.signal_avg;
 679                 i++;
 680         } else {
 681                 list_for_each_entry(sta, &local->sta_list, list) {
 682                         /* Make sure this station belongs to the proper dev */
 683                         if (sta->sdata->dev != dev)
 684                                 continue;
 685
 686                         sinfo.filled = 0;
 687                         sta_set_sinfo(sta, &sinfo);
 688                         i = 0;
 689                         ADD_STA_STATS(sta);
 690                 }
 691         }
 692
 693 do_survey:
 694         i = STA_STATS_LEN - STA_STATS_SURVEY_LEN;
 695         /* Get survey stats for current channel */
 696         survey.filled = 0;
 697
 698         rcu_read_lock();
 699         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
 700         if (chanctx_conf)
 701                 channel = chanctx_conf->def.chan;
 702         else
 703                 channel = NULL;
 704         rcu_read_unlock();
 705
 706         if (channel) {
 707                 q = 0;
 708                 do {
 709                         survey.filled = 0;
 710                         if (drv_get_survey(local, q, &survey) != 0) {
 711                                 survey.filled = 0;
 712                                 break;
 713                         }
 714                         q++;
 715                 } while (channel != survey.channel);
 716         }
 717
 718         if (survey.filled)
 719                 data[i++] = survey.channel->center_freq;
 720         else
 721                 data[i++] = 0;
 722         if (survey.filled & SURVEY_INFO_NOISE_DBM)
 723                 data[i++] = (u8)survey.noise;
 724         else
 725                 data[i++] = -1LL;
 726         if (survey.filled & SURVEY_INFO_CHANNEL_TIME)
 727                 data[i++] = survey.channel_time;
 728         else
 729                 data[i++] = -1LL;
 730         if (survey.filled & SURVEY_INFO_CHANNEL_TIME_BUSY)
 731                 data[i++] = survey.channel_time_busy;
 732         else
 733                 data[i++] = -1LL;
 734         if (survey.filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY)
 735                 data[i++] = survey.channel_time_ext_busy;
 736         else
 737                 data[i++] = -1LL;
 738         if (survey.filled & SURVEY_INFO_CHANNEL_TIME_RX)
 739                 data[i++] = survey.channel_time_rx;
 740         else
 741                 data[i++] = -1LL;
 742         if (survey.filled & SURVEY_INFO_CHANNEL_TIME_TX)
 743                 data[i++] = survey.channel_time_tx;
 744         else
 745                 data[i++] = -1LL;
 746
 747         mutex_unlock(&local->sta_mtx);
 748
 749         if (WARN_ON(i != STA_STATS_LEN))
 750                 return;
 751
 752         drv_get_et_stats(sdata, stats, &(data[STA_STATS_LEN]));
 753 }
 754
 755 static void ieee80211_get_et_strings(struct wiphy *wiphy,
 756                                      struct net_device *dev,
 757                                      u32 sset, u8 *data)
 758 {
 759         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 760         int sz_sta_stats = 0;
 761
 762         if (sset == ETH_SS_STATS) {
 763                 sz_sta_stats = sizeof(ieee80211_gstrings_sta_stats);
 764                 memcpy(data, ieee80211_gstrings_sta_stats, sz_sta_stats);
 765         }
 766         drv_get_et_strings(sdata, sset, &(data[sz_sta_stats]));
 767 }
 768
 769 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
 770                                  int idx, u8 *mac, struct station_info *sinfo)
 771 {
 772         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 773         struct ieee80211_local *local = sdata->local;
 774         struct sta_info *sta;
 775         int ret = -ENOENT;
 776
 777         mutex_lock(&local->sta_mtx);
 778
 779         sta = sta_info_get_by_idx(sdata, idx);
 780         if (sta) {
 781                 ret = 0;
 782                 memcpy(mac, sta->sta.addr, ETH_ALEN);
 783                 sta_set_sinfo(sta, sinfo);
 784         }
 785
 786         mutex_unlock(&local->sta_mtx);
 787
 788         return ret;
 789 }
 790
 791 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
 792                                  int idx, struct survey_info *survey)
 793 {
 794         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 795
 796         return drv_get_survey(local, idx, survey);
 797 }
 798
 799 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 800                                  u8 *mac, struct station_info *sinfo)
 801 {
 802         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 803         struct ieee80211_local *local = sdata->local;
 804         struct sta_info *sta;
 805         int ret = -ENOENT;
 806
 807         mutex_lock(&local->sta_mtx);
 808
 809         sta = sta_info_get_bss(sdata, mac);
 810         if (sta) {
 811                 ret = 0;
 812                 sta_set_sinfo(sta, sinfo);
 813         }
 814
 815         mutex_unlock(&local->sta_mtx);
 816
 817         return ret;
 818 }
 819
 820 static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
 821                                          struct cfg80211_chan_def *chandef)
 822 {
 823         struct ieee80211_local *local = wiphy_priv(wiphy);
 824         struct ieee80211_sub_if_data *sdata;
 825         int ret = 0;
 826
 827         if (cfg80211_chandef_identical(&local->monitor_chandef, chandef))
 828                 return 0;
 829
 830         mutex_lock(&local->iflist_mtx);
 831         if (local->use_chanctx) {
 832                 sdata = rcu_dereference_protected(
 833                                 local->monitor_sdata,
 834                                 lockdep_is_held(&local->iflist_mtx));
 835                 if (sdata) {
 836                         ieee80211_vif_release_channel(sdata);
 837                         ret = ieee80211_vif_use_channel(sdata, chandef,
 838                                         IEEE80211_CHANCTX_EXCLUSIVE);
 839                 }
 840         } else if (local->open_count == local->monitors) {
 841                 local->_oper_chandef = *chandef;
 842                 ieee80211_hw_config(local, 0);
 843         }
 844
 845         if (ret == 0)
 846                 local->monitor_chandef = *chandef;
 847         mutex_unlock(&local->iflist_mtx);
 848
 849         return ret;
 850 }
 851
 852 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
 853                                     const u8 *resp, size_t resp_len)
 854 {
 855         struct probe_resp *new, *old;
 856
 857         if (!resp || !resp_len)
 858                 return 1;
 859
 860         old = sdata_dereference(sdata->u.ap.probe_resp, sdata);
 861
 862         new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL);
 863         if (!new)
 864                 return -ENOMEM;
 865
 866         new->len = resp_len;
 867         memcpy(new->data, resp, resp_len);
 868
 869         rcu_assign_pointer(sdata->u.ap.probe_resp, new);
 870         if (old)
 871                 kfree_rcu(old, rcu_head);
 872
 873         return 0;
 874 }
 875
 876 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
 877                                    struct cfg80211_beacon_data *params)
 878 {
 879         struct beacon_data *new, *old;
 880         int new_head_len, new_tail_len;
 881         int size, err;
 882         u32 changed = BSS_CHANGED_BEACON;
 883
 884         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 885
 886
 887         /* Need to have a beacon head if we don't have one yet */
 888         if (!params->head && !old)
 889                 return -EINVAL;
 890
 891         /* new or old head? */
 892         if (params->head)
 893                 new_head_len = params->head_len;
 894         else
 895                 new_head_len = old->head_len;
 896
 897         /* new or old tail? */
 898         if (params->tail || !old)
 899                 /* params->tail_len will be zero for !params->tail */
 900                 new_tail_len = params->tail_len;
 901         else
 902                 new_tail_len = old->tail_len;
 903
 904         size = sizeof(*new) + new_head_len + new_tail_len;
 905
 906         new = kzalloc(size, GFP_KERNEL);
 907         if (!new)
 908                 return -ENOMEM;
 909
 910         /* start filling the new info now */
 911
 912         /*
 913          * pointers go into the block we allocated,
 914          * memory is | beacon_data | head | tail |
 915          */
 916         new->head = ((u8 *) new) + sizeof(*new);
 917         new->tail = new->head + new_head_len;
 918         new->head_len = new_head_len;
 919         new->tail_len = new_tail_len;
 920
 921         /* copy in head */
 922         if (params->head)
 923                 memcpy(new->head, params->head, new_head_len);
 924         else
 925                 memcpy(new->head, old->head, new_head_len);
 926
 927         /* copy in optional tail */
 928         if (params->tail)
 929                 memcpy(new->tail, params->tail, new_tail_len);
 930         else
 931                 if (old)
 932                         memcpy(new->tail, old->tail, new_tail_len);
 933
 934         err = ieee80211_set_probe_resp(sdata, params->probe_resp,
 935                                        params->probe_resp_len);
 936         if (err < 0)
 937                 return err;
 938         if (err == 0)
 939                 changed |= BSS_CHANGED_AP_PROBE_RESP;
 940
 941         rcu_assign_pointer(sdata->u.ap.beacon, new);
 942
 943         if (old)
 944                 kfree_rcu(old, rcu_head);
 945
 946         return changed;
 947 }
 948
 949 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
 950                               struct cfg80211_ap_settings *params)
 951 {
 952         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 953         struct beacon_data *old;
 954         struct ieee80211_sub_if_data *vlan;
 955         u32 changed = BSS_CHANGED_BEACON_INT |
 956                       BSS_CHANGED_BEACON_ENABLED |
 957                       BSS_CHANGED_BEACON |
 958                       BSS_CHANGED_SSID |
 959                       BSS_CHANGED_P2P_PS;
 960         int err;
 961
 962         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 963         if (old)
 964                 return -EALREADY;
 965
 966         /* TODO: make hostapd tell us what it wants */
 967         sdata->smps_mode = IEEE80211_SMPS_OFF;
 968         sdata->needed_rx_chains = sdata->local->rx_chains;
 969         sdata->radar_required = params->radar_required;
 970
 971         err = ieee80211_vif_use_channel(sdata, &params->chandef,
 972                                         IEEE80211_CHANCTX_SHARED);
 973         if (err)
 974                 return err;
 975         ieee80211_vif_copy_chanctx_to_vlans(sdata, false);
 976
 977         /*
 978          * Apply control port protocol, this allows us to
 979          * not encrypt dynamic WEP control frames.
 980          */
 981         sdata->control_port_protocol = params->crypto.control_port_ethertype;
 982         sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
 983         sdata->encrypt_headroom = ieee80211_cs_headroom(sdata->local,
 984                                                         &params->crypto,
 985                                                         sdata->vif.type);
 986
 987         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
 988                 vlan->control_port_protocol =
 989                         params->crypto.control_port_ethertype;
 990                 vlan->control_port_no_encrypt =
 991                         params->crypto.control_port_no_encrypt;
 992                 vlan->encrypt_headroom =
 993                         ieee80211_cs_headroom(sdata->local,
 994                                               &params->crypto,
 995                                               vlan->vif.type);
 996         }
 997
 998         sdata->vif.bss_conf.beacon_int = params->beacon_interval;
 999         sdata->vif.bss_conf.dtim_period = params->dtim_period;
1000         sdata->vif.bss_conf.enable_beacon = true;
1001
1002         sdata->vif.bss_conf.ssid_len = params->ssid_len;
1003         if (params->ssid_len)
1004                 memcpy(sdata->vif.bss_conf.ssid, params->ssid,
1005                        params->ssid_len);
1006         sdata->vif.bss_conf.hidden_ssid =
1007                 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
1008
1009         memset(&sdata->vif.bss_conf.p2p_noa_attr, 0,
1010                sizeof(sdata->vif.bss_conf.p2p_noa_attr));
1011         sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow =
1012                 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1013         if (params->p2p_opp_ps)
1014                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
1015                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
1016
1017         err = ieee80211_assign_beacon(sdata, &params->beacon);
1018         if (err < 0)
1019                 return err;
1020         changed |= err;
1021
1022         err = drv_start_ap(sdata->local, sdata);
1023         if (err) {
1024                 old = sdata_dereference(sdata->u.ap.beacon, sdata);
1025
1026                 if (old)
1027                         kfree_rcu(old, rcu_head);
1028                 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
1029                 return err;
1030         }
1031
1032         ieee80211_bss_info_change_notify(sdata, changed);
1033
1034         netif_carrier_on(dev);
1035         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1036                 netif_carrier_on(vlan->dev);
1037
1038         return 0;
1039 }
1040
1041 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
1042                                    struct cfg80211_beacon_data *params)
1043 {
1044         struct ieee80211_sub_if_data *sdata;
1045         struct beacon_data *old;
1046         int err;
1047
1048         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1049
1050         /* don't allow changing the beacon while CSA is in place - offset
1051          * of channel switch counter may change
1052          */
1053         if (sdata->vif.csa_active)
1054                 return -EBUSY;
1055
1056         old = sdata_dereference(sdata->u.ap.beacon, sdata);
1057         if (!old)
1058                 return -ENOENT;
1059
1060         err = ieee80211_assign_beacon(sdata, params);
1061         if (err < 0)
1062                 return err;
1063         ieee80211_bss_info_change_notify(sdata, err);
1064         return 0;
1065 }
1066
1067 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
1068 {
1069         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1070         struct ieee80211_sub_if_data *vlan;
1071         struct ieee80211_local *local = sdata->local;
1072         struct beacon_data *old_beacon;
1073         struct probe_resp *old_probe_resp;
1074         struct cfg80211_chan_def chandef;
1075
1076         old_beacon = sdata_dereference(sdata->u.ap.beacon, sdata);
1077         if (!old_beacon)
1078                 return -ENOENT;
1079         old_probe_resp = sdata_dereference(sdata->u.ap.probe_resp, sdata);
1080
1081         /* abort any running channel switch */
1082         sdata->vif.csa_active = false;
1083         kfree(sdata->u.ap.next_beacon);
1084         sdata->u.ap.next_beacon = NULL;
1085
1086         cancel_work_sync(&sdata->u.ap.request_smps_work);
1087
1088         /* turn off carrier for this interface and dependent VLANs */
1089         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1090                 netif_carrier_off(vlan->dev);
1091         netif_carrier_off(dev);
1092
1093         /* remove beacon and probe response */
1094         RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
1095         RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL);
1096         kfree_rcu(old_beacon, rcu_head);
1097         if (old_probe_resp)
1098                 kfree_rcu(old_probe_resp, rcu_head);
1099
1100         __sta_info_flush(sdata, true);
1101         ieee80211_free_keys(sdata, true);
1102
1103         sdata->vif.bss_conf.enable_beacon = false;
1104         sdata->vif.bss_conf.ssid_len = 0;
1105         clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state);
1106         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
1107
1108         if (sdata->wdev.cac_started) {
1109                 chandef = sdata->vif.bss_conf.chandef;
1110                 cancel_delayed_work_sync(&sdata->dfs_cac_timer_work);
1111                 cfg80211_cac_event(sdata->dev, &chandef,
1112                                    NL80211_RADAR_CAC_ABORTED,
1113                                    GFP_KERNEL);
1114         }
1115
1116         drv_stop_ap(sdata->local, sdata);
1117
1118         /* free all potentially still buffered bcast frames */
1119         local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf);
1120         skb_queue_purge(&sdata->u.ap.ps.bc_buf);
1121
1122         ieee80211_vif_copy_chanctx_to_vlans(sdata, true);
1123         ieee80211_vif_release_channel(sdata);
1124
1125         return 0;
1126 }
1127
1128 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
1129 struct iapp_layer2_update {
1130         u8 da[ETH_ALEN];        /* broadcast */
1131         u8 sa[ETH_ALEN];        /* STA addr */
1132         __be16 len;             /* 6 */
1133         u8 dsap;                /* 0 */
1134         u8 ssap;                /* 0 */
1135         u8 control;
1136         u8 xid_info[3];
1137 } __packed;
1138
1139 static void ieee80211_send_layer2_update(struct sta_info *sta)
1140 {
1141         struct iapp_layer2_update *msg;
1142         struct sk_buff *skb;
1143
1144         /* Send Level 2 Update Frame to update forwarding tables in layer 2
1145          * bridge devices */
1146
1147         skb = dev_alloc_skb(sizeof(*msg));
1148         if (!skb)
1149                 return;
1150         msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
1151
1152         /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
1153          * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
1154
1155         eth_broadcast_addr(msg->da);
1156         memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
1157         msg->len = htons(6);
1158         msg->dsap = 0;
1159         msg->ssap = 0x01;       /* NULL LSAP, CR Bit: Response */
1160         msg->control = 0xaf;    /* XID response lsb.1111F101.
1161                                  * F=0 (no poll command; unsolicited frame) */
1162         msg->xid_info[0] = 0x81;        /* XID format identifier */
1163         msg->xid_info[1] = 1;   /* LLC types/classes: Type 1 LLC */
1164         msg->xid_info[2] = 0;   /* XID sender's receive window size (RW) */
1165
1166         skb->dev = sta->sdata->dev;
1167         skb->protocol = eth_type_trans(skb, sta->sdata->dev);
1168         memset(skb->cb, 0, sizeof(skb->cb));
1169         netif_rx_ni(skb);
1170 }
1171
1172 static int sta_apply_auth_flags(struct ieee80211_local *local,
1173                                 struct sta_info *sta,
1174                                 u32 mask, u32 set)
1175 {
1176         int ret;
1177
1178         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1179             set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1180             !test_sta_flag(sta, WLAN_STA_AUTH)) {
1181                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1182                 if (ret)
1183                         return ret;
1184         }
1185
1186         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1187             set & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1188             !test_sta_flag(sta, WLAN_STA_ASSOC)) {
1189                 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1190                 if (ret)
1191                         return ret;
1192         }
1193
1194         if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1195                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
1196                         ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
1197                 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1198                         ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1199                 else
1200                         ret = 0;
1201                 if (ret)
1202                         return ret;
1203         }
1204
1205         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1206             !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
1207             test_sta_flag(sta, WLAN_STA_ASSOC)) {
1208                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1209                 if (ret)
1210                         return ret;
1211         }
1212
1213         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1214             !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
1215             test_sta_flag(sta, WLAN_STA_AUTH)) {
1216                 ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
1217                 if (ret)
1218                         return ret;
1219         }
1220
1221         return 0;
1222 }
1223
1224 static int sta_apply_parameters(struct ieee80211_local *local,
1225                                 struct sta_info *sta,
1226                                 struct station_parameters *params)
1227 {
1228         int ret = 0;
1229         struct ieee80211_supported_band *sband;
1230         struct ieee80211_sub_if_data *sdata = sta->sdata;
1231         enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
1232         u32 mask, set;
1233
1234         sband = local->hw.wiphy->bands[band];
1235
1236         mask = params->sta_flags_mask;
1237         set = params->sta_flags_set;
1238
1239         if (ieee80211_vif_is_mesh(&sdata->vif)) {
1240                 /*
1241                  * In mesh mode, ASSOCIATED isn't part of the nl80211
1242                  * API but must follow AUTHENTICATED for driver state.
1243                  */
1244                 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1245                         mask |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1246                 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1247                         set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1248         } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1249                 /*
1250                  * TDLS -- everything follows authorized, but
1251                  * only becoming authorized is possible, not
1252                  * going back
1253                  */
1254                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1255                         set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1256                                BIT(NL80211_STA_FLAG_ASSOCIATED);
1257                         mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1258                                 BIT(NL80211_STA_FLAG_ASSOCIATED);
1259                 }
1260         }
1261
1262         ret = sta_apply_auth_flags(local, sta, mask, set);
1263         if (ret)
1264                 return ret;
1265
1266         if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
1267                 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
1268                         set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1269                 else
1270                         clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1271         }
1272
1273         if (mask & BIT(NL80211_STA_FLAG_WME)) {
1274                 if (set & BIT(NL80211_STA_FLAG_WME)) {
1275                         set_sta_flag(sta, WLAN_STA_WME);
1276                         sta->sta.wme = true;
1277                 } else {
1278                         clear_sta_flag(sta, WLAN_STA_WME);
1279                         sta->sta.wme = false;
1280                 }
1281         }
1282
1283         if (mask & BIT(NL80211_STA_FLAG_MFP)) {
1284                 if (set & BIT(NL80211_STA_FLAG_MFP))
1285                         set_sta_flag(sta, WLAN_STA_MFP);
1286                 else
1287                         clear_sta_flag(sta, WLAN_STA_MFP);
1288         }
1289
1290         if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
1291                 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1292                         set_sta_flag(sta, WLAN_STA_TDLS_PEER);
1293                 else
1294                         clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1295         }
1296
1297         if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
1298                 sta->sta.uapsd_queues = params->uapsd_queues;
1299                 sta->sta.max_sp = params->max_sp;
1300         }
1301
1302         /*
1303          * cfg80211 validates this (1-2007) and allows setting the AID
1304          * only when creating a new station entry
1305          */
1306         if (params->aid)
1307                 sta->sta.aid = params->aid;
1308
1309         /*
1310          * Some of the following updates would be racy if called on an
1311          * existing station, via ieee80211_change_station(). However,
1312          * all such changes are rejected by cfg80211 except for updates
1313          * changing the supported rates on an existing but not yet used
1314          * TDLS peer.
1315          */
1316
1317         if (params->listen_interval >= 0)
1318                 sta->listen_interval = params->listen_interval;
1319
1320         if (params->supported_rates) {
1321                 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1322                                          sband, params->supported_rates,
1323                                          params->supported_rates_len,
1324                                          &sta->sta.supp_rates[band]);
1325         }
1326
1327         if (params->ht_capa)
1328                 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1329                                                   params->ht_capa, sta);
1330
1331         if (params->vht_capa)
1332                 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
1333                                                     params->vht_capa, sta);
1334
1335         if (ieee80211_vif_is_mesh(&sdata->vif)) {
1336 #ifdef CONFIG_MAC80211_MESH
1337                 u32 changed = 0;
1338
1339                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) {
1340                         switch (params->plink_state) {
1341                         case NL80211_PLINK_ESTAB:
1342                                 if (sta->plink_state != NL80211_PLINK_ESTAB)
1343                                         changed = mesh_plink_inc_estab_count(
1344                                                         sdata);
1345                                 sta->plink_state = params->plink_state;
1346
1347                                 ieee80211_mps_sta_status_update(sta);
1348                                 changed |= ieee80211_mps_set_sta_local_pm(sta,
1349                                               sdata->u.mesh.mshcfg.power_mode);
1350                                 break;
1351                         case NL80211_PLINK_LISTEN:
1352                         case NL80211_PLINK_BLOCKED:
1353                         case NL80211_PLINK_OPN_SNT:
1354                         case NL80211_PLINK_OPN_RCVD:
1355                         case NL80211_PLINK_CNF_RCVD:
1356                         case NL80211_PLINK_HOLDING:
1357                                 if (sta->plink_state == NL80211_PLINK_ESTAB)
1358                                         changed = mesh_plink_dec_estab_count(
1359                                                         sdata);
1360                                 sta->plink_state = params->plink_state;
1361
1362                                 ieee80211_mps_sta_status_update(sta);
1363                                 changed |= ieee80211_mps_set_sta_local_pm(sta,
1364                                                 NL80211_MESH_POWER_UNKNOWN);
1365                                 break;
1366                         default:
1367                                 /*  nothing  */
1368                                 break;
1369                         }
1370                 }
1371
1372                 switch (params->plink_action) {
1373                 case NL80211_PLINK_ACTION_NO_ACTION:
1374                         /* nothing */
1375                         break;
1376                 case NL80211_PLINK_ACTION_OPEN:
1377                         changed |= mesh_plink_open(sta);
1378                         break;
1379                 case NL80211_PLINK_ACTION_BLOCK:
1380                         changed |= mesh_plink_block(sta);
1381                         break;
1382                 }
1383
1384                 if (params->local_pm)
1385                         changed |=
1386                               ieee80211_mps_set_sta_local_pm(sta,
1387                                                              params->local_pm);
1388                 ieee80211_mbss_info_change_notify(sdata, changed);
1389 #endif
1390         }
1391
1392         return 0;
1393 }
1394
1395 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1396                                  u8 *mac, struct station_parameters *params)
1397 {
1398         struct ieee80211_local *local = wiphy_priv(wiphy);
1399         struct sta_info *sta;
1400         struct ieee80211_sub_if_data *sdata;
1401         int err;
1402         int layer2_update;
1403
1404         if (params->vlan) {
1405                 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1406
1407                 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1408                     sdata->vif.type != NL80211_IFTYPE_AP)
1409                         return -EINVAL;
1410         } else
1411                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1412
1413         if (ether_addr_equal(mac, sdata->vif.addr))
1414                 return -EINVAL;
1415
1416         if (is_multicast_ether_addr(mac))
1417                 return -EINVAL;
1418
1419         sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
1420         if (!sta)
1421                 return -ENOMEM;
1422
1423         /*
1424          * defaults -- if userspace wants something else we'll
1425          * change it accordingly in sta_apply_parameters()
1426          */
1427         if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) {
1428                 sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
1429                 sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC);
1430         }
1431
1432         err = sta_apply_parameters(local, sta, params);
1433         if (err) {
1434                 sta_info_free(local, sta);
1435                 return err;
1436         }
1437
1438         /*
1439          * for TDLS, rate control should be initialized only when
1440          * rates are known and station is marked authorized
1441          */
1442         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER))
1443                 rate_control_rate_init(sta);
1444
1445         layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
1446                 sdata->vif.type == NL80211_IFTYPE_AP;
1447
1448         err = sta_info_insert_rcu(sta);
1449         if (err) {
1450                 rcu_read_unlock();
1451                 return err;
1452         }
1453
1454         if (layer2_update)
1455                 ieee80211_send_layer2_update(sta);
1456
1457         rcu_read_unlock();
1458
1459         return 0;
1460 }
1461
1462 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1463                                  u8 *mac)
1464 {
1465         struct ieee80211_sub_if_data *sdata;
1466
1467         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1468
1469         if (mac)
1470                 return sta_info_destroy_addr_bss(sdata, mac);
1471
1472         sta_info_flush(sdata);
1473         return 0;
1474 }
1475
1476 static int ieee80211_change_station(struct wiphy *wiphy,
1477                                     struct net_device *dev, u8 *mac,
1478                                     struct station_parameters *params)
1479 {
1480         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1481         struct ieee80211_local *local = wiphy_priv(wiphy);
1482         struct sta_info *sta;
1483         struct ieee80211_sub_if_data *vlansdata;
1484         enum cfg80211_station_type statype;
1485         int err;
1486
1487         mutex_lock(&local->sta_mtx);
1488
1489         sta = sta_info_get_bss(sdata, mac);
1490         if (!sta) {
1491                 err = -ENOENT;
1492                 goto out_err;
1493         }
1494
1495         switch (sdata->vif.type) {
1496         case NL80211_IFTYPE_MESH_POINT:
1497                 if (sdata->u.mesh.user_mpm)
1498                         statype = CFG80211_STA_MESH_PEER_USER;
1499                 else
1500                         statype = CFG80211_STA_MESH_PEER_KERNEL;
1501                 break;
1502         case NL80211_IFTYPE_ADHOC:
1503                 statype = CFG80211_STA_IBSS;
1504                 break;
1505         case NL80211_IFTYPE_STATION:
1506                 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1507                         statype = CFG80211_STA_AP_STA;
1508                         break;
1509                 }
1510                 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1511                         statype = CFG80211_STA_TDLS_PEER_ACTIVE;
1512                 else
1513                         statype = CFG80211_STA_TDLS_PEER_SETUP;
1514                 break;
1515         case NL80211_IFTYPE_AP:
1516         case NL80211_IFTYPE_AP_VLAN:
1517                 statype = CFG80211_STA_AP_CLIENT;
1518                 break;
1519         default:
1520                 err = -EOPNOTSUPP;
1521                 goto out_err;
1522         }
1523
1524         err = cfg80211_check_station_change(wiphy, params, statype);
1525         if (err)
1526                 goto out_err;
1527
1528         if (params->vlan && params->vlan != sta->sdata->dev) {
1529                 bool prev_4addr = false;
1530                 bool new_4addr = false;
1531
1532                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1533
1534                 if (params->vlan->ieee80211_ptr->use_4addr) {
1535                         if (vlansdata->u.vlan.sta) {
1536                                 err = -EBUSY;
1537                                 goto out_err;
1538                         }
1539
1540                         rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1541                         new_4addr = true;
1542                 }
1543
1544                 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
1545                     sta->sdata->u.vlan.sta) {
1546                         rcu_assign_pointer(sta->sdata->u.vlan.sta, NULL);
1547                         prev_4addr = true;
1548                 }
1549
1550                 sta->sdata = vlansdata;
1551
1552                 if (sta->sta_state == IEEE80211_STA_AUTHORIZED &&
1553                     prev_4addr != new_4addr) {
1554                         if (new_4addr)
1555                                 atomic_dec(&sta->sdata->bss->num_mcast_sta);
1556                         else
1557                                 atomic_inc(&sta->sdata->bss->num_mcast_sta);
1558                 }
1559
1560                 ieee80211_send_layer2_update(sta);
1561         }
1562
1563         err = sta_apply_parameters(local, sta, params);
1564         if (err)
1565                 goto out_err;
1566
1567         /* When peer becomes authorized, init rate control as well */
1568         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1569             test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1570                 rate_control_rate_init(sta);
1571
1572         mutex_unlock(&local->sta_mtx);
1573
1574         if ((sdata->vif.type == NL80211_IFTYPE_AP ||
1575              sdata->vif.type == NL80211_IFTYPE_AP_VLAN) &&
1576             sta->known_smps_mode != sta->sdata->bss->req_smps &&
1577             test_sta_flag(sta, WLAN_STA_AUTHORIZED) &&
1578             sta_info_tx_streams(sta) != 1) {
1579                 ht_dbg(sta->sdata,
1580                        "%pM just authorized and MIMO capable - update SMPS\n",
1581                        sta->sta.addr);
1582                 ieee80211_send_smps_action(sta->sdata,
1583                         sta->sdata->bss->req_smps,
1584                         sta->sta.addr,
1585                         sta->sdata->vif.bss_conf.bssid);
1586         }
1587
1588         if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1589             params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1590                 ieee80211_recalc_ps(local, -1);
1591                 ieee80211_recalc_ps_vif(sdata);
1592         }
1593
1594         return 0;
1595 out_err:
1596         mutex_unlock(&local->sta_mtx);
1597         return err;
1598 }
1599
1600 #ifdef CONFIG_MAC80211_MESH
1601 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1602                                  u8 *dst, u8 *next_hop)
1603 {
1604         struct ieee80211_sub_if_data *sdata;
1605         struct mesh_path *mpath;
1606         struct sta_info *sta;
1607
1608         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1609
1610         rcu_read_lock();
1611         sta = sta_info_get(sdata, next_hop);
1612         if (!sta) {
1613                 rcu_read_unlock();
1614                 return -ENOENT;
1615         }
1616
1617         mpath = mesh_path_add(sdata, dst);
1618         if (IS_ERR(mpath)) {
1619                 rcu_read_unlock();
1620                 return PTR_ERR(mpath);
1621         }
1622
1623         mesh_path_fix_nexthop(mpath, sta);
1624
1625         rcu_read_unlock();
1626         return 0;
1627 }
1628
1629 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1630                                u8 *dst)
1631 {
1632         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1633
1634         if (dst)
1635                 return mesh_path_del(sdata, dst);
1636
1637         mesh_path_flush_by_iface(sdata);
1638         return 0;
1639 }
1640
1641 static int ieee80211_change_mpath(struct wiphy *wiphy,
1642                                     struct net_device *dev,
1643                                     u8 *dst, u8 *next_hop)
1644 {
1645         struct ieee80211_sub_if_data *sdata;
1646         struct mesh_path *mpath;
1647         struct sta_info *sta;
1648
1649         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1650
1651         rcu_read_lock();
1652
1653         sta = sta_info_get(sdata, next_hop);
1654         if (!sta) {
1655                 rcu_read_unlock();
1656                 return -ENOENT;
1657         }
1658
1659         mpath = mesh_path_lookup(sdata, dst);
1660         if (!mpath) {
1661                 rcu_read_unlock();
1662                 return -ENOENT;
1663         }
1664
1665         mesh_path_fix_nexthop(mpath, sta);
1666
1667         rcu_read_unlock();
1668         return 0;
1669 }
1670
1671 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1672                             struct mpath_info *pinfo)
1673 {
1674         struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1675
1676         if (next_hop_sta)
1677                 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1678         else
1679                 memset(next_hop, 0, ETH_ALEN);
1680
1681         memset(pinfo, 0, sizeof(*pinfo));
1682
1683         pinfo->generation = mesh_paths_generation;
1684
1685         pinfo->filled = MPATH_INFO_FRAME_QLEN |
1686                         MPATH_INFO_SN |
1687                         MPATH_INFO_METRIC |
1688                         MPATH_INFO_EXPTIME |
1689                         MPATH_INFO_DISCOVERY_TIMEOUT |
1690                         MPATH_INFO_DISCOVERY_RETRIES |
1691                         MPATH_INFO_FLAGS;
1692
1693         pinfo->frame_qlen = mpath->frame_queue.qlen;
1694         pinfo->sn = mpath->sn;
1695         pinfo->metric = mpath->metric;
1696         if (time_before(jiffies, mpath->exp_time))
1697                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1698         pinfo->discovery_timeout =
1699                         jiffies_to_msecs(mpath->discovery_timeout);
1700         pinfo->discovery_retries = mpath->discovery_retries;
1701         if (mpath->flags & MESH_PATH_ACTIVE)
1702                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1703         if (mpath->flags & MESH_PATH_RESOLVING)
1704                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1705         if (mpath->flags & MESH_PATH_SN_VALID)
1706                 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1707         if (mpath->flags & MESH_PATH_FIXED)
1708                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1709         if (mpath->flags & MESH_PATH_RESOLVED)
1710                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
1711 }
1712
1713 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1714                                u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1715
1716 {
1717         struct ieee80211_sub_if_data *sdata;
1718         struct mesh_path *mpath;
1719
1720         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1721
1722         rcu_read_lock();
1723         mpath = mesh_path_lookup(sdata, dst);
1724         if (!mpath) {
1725                 rcu_read_unlock();
1726                 return -ENOENT;
1727         }
1728         memcpy(dst, mpath->dst, ETH_ALEN);
1729         mpath_set_pinfo(mpath, next_hop, pinfo);
1730         rcu_read_unlock();
1731         return 0;
1732 }
1733
1734 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1735                                  int idx, u8 *dst, u8 *next_hop,
1736                                  struct mpath_info *pinfo)
1737 {
1738         struct ieee80211_sub_if_data *sdata;
1739         struct mesh_path *mpath;
1740
1741         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1742
1743         rcu_read_lock();
1744         mpath = mesh_path_lookup_by_idx(sdata, idx);
1745         if (!mpath) {
1746                 rcu_read_unlock();
1747                 return -ENOENT;
1748         }
1749         memcpy(dst, mpath->dst, ETH_ALEN);
1750         mpath_set_pinfo(mpath, next_hop, pinfo);
1751         rcu_read_unlock();
1752         return 0;
1753 }
1754
1755 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1756                                 struct net_device *dev,
1757                                 struct mesh_config *conf)
1758 {
1759         struct ieee80211_sub_if_data *sdata;
1760         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1761
1762         memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1763         return 0;
1764 }
1765
1766 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1767 {
1768         return (mask >> (parm-1)) & 0x1;
1769 }
1770
1771 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1772                 const struct mesh_setup *setup)
1773 {
1774         u8 *new_ie;
1775         const u8 *old_ie;
1776         struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1777                                         struct ieee80211_sub_if_data, u.mesh);
1778
1779         /* allocate information elements */
1780         new_ie = NULL;
1781         old_ie = ifmsh->ie;
1782
1783         if (setup->ie_len) {
1784                 new_ie = kmemdup(setup->ie, setup->ie_len,
1785                                 GFP_KERNEL);
1786                 if (!new_ie)
1787                         return -ENOMEM;
1788         }
1789         ifmsh->ie_len = setup->ie_len;
1790         ifmsh->ie = new_ie;
1791         kfree(old_ie);
1792
1793         /* now copy the rest of the setup parameters */
1794         ifmsh->mesh_id_len = setup->mesh_id_len;
1795         memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1796         ifmsh->mesh_sp_id = setup->sync_method;
1797         ifmsh->mesh_pp_id = setup->path_sel_proto;
1798         ifmsh->mesh_pm_id = setup->path_metric;
1799         ifmsh->user_mpm = setup->user_mpm;
1800         ifmsh->mesh_auth_id = setup->auth_id;
1801         ifmsh->security = IEEE80211_MESH_SEC_NONE;
1802         if (setup->is_authenticated)
1803                 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1804         if (setup->is_secure)
1805                 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1806
1807         /* mcast rate setting in Mesh Node */
1808         memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1809                                                 sizeof(setup->mcast_rate));
1810         sdata->vif.bss_conf.basic_rates = setup->basic_rates;
1811
1812         sdata->vif.bss_conf.beacon_int = setup->beacon_interval;
1813         sdata->vif.bss_conf.dtim_period = setup->dtim_period;
1814
1815         return 0;
1816 }
1817
1818 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1819                                         struct net_device *dev, u32 mask,
1820                                         const struct mesh_config *nconf)
1821 {
1822         struct mesh_config *conf;
1823         struct ieee80211_sub_if_data *sdata;
1824         struct ieee80211_if_mesh *ifmsh;
1825
1826         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1827         ifmsh = &sdata->u.mesh;
1828
1829         /* Set the config options which we are interested in setting */
1830         conf = &(sdata->u.mesh.mshcfg);
1831         if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1832                 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1833         if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1834                 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1835         if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1836                 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1837         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1838                 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1839         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1840                 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1841         if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1842                 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1843         if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1844                 conf->element_ttl = nconf->element_ttl;
1845         if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) {
1846                 if (ifmsh->user_mpm)
1847                         return -EBUSY;
1848                 conf->auto_open_plinks = nconf->auto_open_plinks;
1849         }
1850         if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
1851                 conf->dot11MeshNbrOffsetMaxNeighbor =
1852                         nconf->dot11MeshNbrOffsetMaxNeighbor;
1853         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1854                 conf->dot11MeshHWMPmaxPREQretries =
1855                         nconf->dot11MeshHWMPmaxPREQretries;
1856         if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1857                 conf->path_refresh_time = nconf->path_refresh_time;
1858         if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1859                 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1860         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1861                 conf->dot11MeshHWMPactivePathTimeout =
1862                         nconf->dot11MeshHWMPactivePathTimeout;
1863         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1864                 conf->dot11MeshHWMPpreqMinInterval =
1865                         nconf->dot11MeshHWMPpreqMinInterval;
1866         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1867                 conf->dot11MeshHWMPperrMinInterval =
1868                         nconf->dot11MeshHWMPperrMinInterval;
1869         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1870                            mask))
1871                 conf->dot11MeshHWMPnetDiameterTraversalTime =
1872                         nconf->dot11MeshHWMPnetDiameterTraversalTime;
1873         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1874                 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1875                 ieee80211_mesh_root_setup(ifmsh);
1876         }
1877         if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1878                 /* our current gate announcement implementation rides on root
1879                  * announcements, so require this ifmsh to also be a root node
1880                  * */
1881                 if (nconf->dot11MeshGateAnnouncementProtocol &&
1882                     !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
1883                         conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
1884                         ieee80211_mesh_root_setup(ifmsh);
1885                 }
1886                 conf->dot11MeshGateAnnouncementProtocol =
1887                         nconf->dot11MeshGateAnnouncementProtocol;
1888         }
1889         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
1890                 conf->dot11MeshHWMPRannInterval =
1891                         nconf->dot11MeshHWMPRannInterval;
1892         if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
1893                 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1894         if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
1895                 /* our RSSI threshold implementation is supported only for
1896                  * devices that report signal in dBm.
1897                  */
1898                 if (!(sdata->local->hw.flags & IEEE80211_HW_SIGNAL_DBM))
1899                         return -ENOTSUPP;
1900                 conf->rssi_threshold = nconf->rssi_threshold;
1901         }
1902         if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
1903                 conf->ht_opmode = nconf->ht_opmode;
1904                 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
1905                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1906         }
1907         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
1908                 conf->dot11MeshHWMPactivePathToRootTimeout =
1909                         nconf->dot11MeshHWMPactivePathToRootTimeout;
1910         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
1911                 conf->dot11MeshHWMProotInterval =
1912                         nconf->dot11MeshHWMProotInterval;
1913         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
1914                 conf->dot11MeshHWMPconfirmationInterval =
1915                         nconf->dot11MeshHWMPconfirmationInterval;
1916         if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) {
1917                 conf->power_mode = nconf->power_mode;
1918                 ieee80211_mps_local_status_update(sdata);
1919         }
1920         if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask))
1921                 conf->dot11MeshAwakeWindowDuration =
1922                         nconf->dot11MeshAwakeWindowDuration;
1923         if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask))
1924                 conf->plink_timeout = nconf->plink_timeout;
1925         ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON);
1926         return 0;
1927 }
1928
1929 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1930                                const struct mesh_config *conf,
1931                                const struct mesh_setup *setup)
1932 {
1933         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1934         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1935         int err;
1936
1937         memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1938         err = copy_mesh_setup(ifmsh, setup);
1939         if (err)
1940                 return err;
1941
1942         /* can mesh use other SMPS modes? */
1943         sdata->smps_mode = IEEE80211_SMPS_OFF;
1944         sdata->needed_rx_chains = sdata->local->rx_chains;
1945
1946         err = ieee80211_vif_use_channel(sdata, &setup->chandef,
1947                                         IEEE80211_CHANCTX_SHARED);
1948         if (err)
1949                 return err;
1950
1951         return ieee80211_start_mesh(sdata);
1952 }
1953
1954 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1955 {
1956         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1957
1958         ieee80211_stop_mesh(sdata);
1959         ieee80211_vif_release_channel(sdata);
1960
1961         return 0;
1962 }
1963 #endif
1964
1965 static int ieee80211_change_bss(struct wiphy *wiphy,
1966                                 struct net_device *dev,
1967                                 struct bss_parameters *params)
1968 {
1969         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1970         enum ieee80211_band band;
1971         u32 changed = 0;
1972
1973         if (!sdata_dereference(sdata->u.ap.beacon, sdata))
1974                 return -ENOENT;
1975
1976         band = ieee80211_get_sdata_band(sdata);
1977
1978         if (params->use_cts_prot >= 0) {
1979                 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1980                 changed |= BSS_CHANGED_ERP_CTS_PROT;
1981         }
1982         if (params->use_short_preamble >= 0) {
1983                 sdata->vif.bss_conf.use_short_preamble =
1984                         params->use_short_preamble;
1985                 changed |= BSS_CHANGED_ERP_PREAMBLE;
1986         }
1987
1988         if (!sdata->vif.bss_conf.use_short_slot &&
1989             band == IEEE80211_BAND_5GHZ) {
1990                 sdata->vif.bss_conf.use_short_slot = true;
1991                 changed |= BSS_CHANGED_ERP_SLOT;
1992         }
1993
1994         if (params->use_short_slot_time >= 0) {
1995                 sdata->vif.bss_conf.use_short_slot =
1996                         params->use_short_slot_time;
1997                 changed |= BSS_CHANGED_ERP_SLOT;
1998         }
1999
2000         if (params->basic_rates) {
2001                 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
2002                                          wiphy->bands[band],
2003                                          params->basic_rates,
2004                                          params->basic_rates_len,
2005                                          &sdata->vif.bss_conf.basic_rates);
2006                 changed |= BSS_CHANGED_BASIC_RATES;
2007         }
2008
2009         if (params->ap_isolate >= 0) {
2010                 if (params->ap_isolate)
2011                         sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
2012                 else
2013                         sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
2014         }
2015
2016         if (params->ht_opmode >= 0) {
2017                 sdata->vif.bss_conf.ht_operation_mode =
2018                         (u16) params->ht_opmode;
2019                 changed |= BSS_CHANGED_HT;
2020         }
2021
2022         if (params->p2p_ctwindow >= 0) {
2023                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
2024                                         ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
2025                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
2026                         params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
2027                 changed |= BSS_CHANGED_P2P_PS;
2028         }
2029
2030         if (params->p2p_opp_ps > 0) {
2031                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
2032                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
2033                 changed |= BSS_CHANGED_P2P_PS;
2034         } else if (params->p2p_opp_ps == 0) {
2035                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
2036                                         ~IEEE80211_P2P_OPPPS_ENABLE_BIT;
2037                 changed |= BSS_CHANGED_P2P_PS;
2038         }
2039
2040         ieee80211_bss_info_change_notify(sdata, changed);
2041
2042         return 0;
2043 }
2044
2045 static int ieee80211_set_txq_params(struct wiphy *wiphy,
2046                                     struct net_device *dev,
2047                                     struct ieee80211_txq_params *params)
2048 {
2049         struct ieee80211_local *local = wiphy_priv(wiphy);
2050         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2051         struct ieee80211_tx_queue_params p;
2052
2053         if (!local->ops->conf_tx)
2054                 return -EOPNOTSUPP;
2055
2056         if (local->hw.queues < IEEE80211_NUM_ACS)
2057                 return -EOPNOTSUPP;
2058
2059         memset(&p, 0, sizeof(p));
2060         p.aifs = params->aifs;
2061         p.cw_max = params->cwmax;
2062         p.cw_min = params->cwmin;
2063         p.txop = params->txop;
2064
2065         /*
2066          * Setting tx queue params disables u-apsd because it's only
2067          * called in master mode.
2068          */
2069         p.uapsd = false;
2070
2071         sdata->tx_conf[params->ac] = p;
2072         if (drv_conf_tx(local, sdata, params->ac, &p)) {
2073                 wiphy_debug(local->hw.wiphy,
2074                             "failed to set TX queue parameters for AC %d\n",
2075                             params->ac);
2076                 return -EINVAL;
2077         }
2078
2079         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
2080
2081         return 0;
2082 }
2083
2084 #ifdef CONFIG_PM
2085 static int ieee80211_suspend(struct wiphy *wiphy,
2086                              struct cfg80211_wowlan *wowlan)
2087 {
2088         return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
2089 }
2090
2091 static int ieee80211_resume(struct wiphy *wiphy)
2092 {
2093         return __ieee80211_resume(wiphy_priv(wiphy));
2094 }
2095 #else
2096 #define ieee80211_suspend NULL
2097 #define ieee80211_resume NULL
2098 #endif
2099
2100 static int ieee80211_scan(struct wiphy *wiphy,
2101                           struct cfg80211_scan_request *req)
2102 {
2103         struct ieee80211_sub_if_data *sdata;
2104
2105         sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
2106
2107         switch (ieee80211_vif_type_p2p(&sdata->vif)) {
2108         case NL80211_IFTYPE_STATION:
2109         case NL80211_IFTYPE_ADHOC:
2110         case NL80211_IFTYPE_MESH_POINT:
2111         case NL80211_IFTYPE_P2P_CLIENT:
2112         case NL80211_IFTYPE_P2P_DEVICE:
2113                 break;
2114         case NL80211_IFTYPE_P2P_GO:
2115                 if (sdata->local->ops->hw_scan)
2116                         break;
2117                 /*
2118                  * FIXME: implement NoA while scanning in software,
2119                  * for now fall through to allow scanning only when
2120                  * beaconing hasn't been configured yet
2121                  */
2122         case NL80211_IFTYPE_AP:
2123                 /*
2124                  * If the scan has been forced (and the driver supports
2125                  * forcing), don't care about being beaconing already.
2126                  * This will create problems to the attached stations (e.g. all
2127                  * the  frames sent while scanning on other channel will be
2128                  * lost)
2129                  */
2130                 if (sdata->u.ap.beacon &&
2131                     (!(wiphy->features & NL80211_FEATURE_AP_SCAN) ||
2132                      !(req->flags & NL80211_SCAN_FLAG_AP)))
2133                         return -EOPNOTSUPP;
2134                 break;
2135         default:
2136                 return -EOPNOTSUPP;
2137         }
2138
2139         return ieee80211_request_scan(sdata, req);
2140 }
2141
2142 static int
2143 ieee80211_sched_scan_start(struct wiphy *wiphy,
2144                            struct net_device *dev,
2145                            struct cfg80211_sched_scan_request *req)
2146 {
2147         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2148
2149         if (!sdata->local->ops->sched_scan_start)
2150                 return -EOPNOTSUPP;
2151
2152         return ieee80211_request_sched_scan_start(sdata, req);
2153 }
2154
2155 static int
2156 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
2157 {
2158         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2159
2160         if (!sdata->local->ops->sched_scan_stop)
2161                 return -EOPNOTSUPP;
2162
2163         return ieee80211_request_sched_scan_stop(sdata);
2164 }
2165
2166 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
2167                           struct cfg80211_auth_request *req)
2168 {
2169         return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2170 }
2171
2172 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
2173                            struct cfg80211_assoc_request *req)
2174 {
2175         return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2176 }
2177
2178 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
2179                             struct cfg80211_deauth_request *req)
2180 {
2181         return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2182 }
2183
2184 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
2185                               struct cfg80211_disassoc_request *req)
2186 {
2187         return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2188 }
2189
2190 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2191                                struct cfg80211_ibss_params *params)
2192 {
2193         return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
2194 }
2195
2196 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2197 {
2198         return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2199 }
2200
2201 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev,
2202                                     int rate[IEEE80211_NUM_BANDS])
2203 {
2204         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2205
2206         memcpy(sdata->vif.bss_conf.mcast_rate, rate,
2207                sizeof(int) * IEEE80211_NUM_BANDS);
2208
2209         return 0;
2210 }
2211
2212 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
2213 {
2214         struct ieee80211_local *local = wiphy_priv(wiphy);
2215         int err;
2216
2217         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
2218                 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
2219
2220                 if (err)
2221                         return err;
2222         }
2223
2224         if (changed & WIPHY_PARAM_COVERAGE_CLASS) {
2225                 err = drv_set_coverage_class(local, wiphy->coverage_class);
2226
2227                 if (err)
2228                         return err;
2229         }
2230
2231         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
2232                 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
2233
2234                 if (err)
2235                         return err;
2236         }
2237
2238         if (changed & WIPHY_PARAM_RETRY_SHORT) {
2239                 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY)
2240                         return -EINVAL;
2241                 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
2242         }
2243         if (changed & WIPHY_PARAM_RETRY_LONG) {
2244                 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY)
2245                         return -EINVAL;
2246                 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
2247         }
2248         if (changed &
2249             (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
2250                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
2251
2252         return 0;
2253 }
2254
2255 static int ieee80211_set_tx_power(struct wiphy *wiphy,
2256                                   struct wireless_dev *wdev,
2257                                   enum nl80211_tx_power_setting type, int mbm)
2258 {
2259         struct ieee80211_local *local = wiphy_priv(wiphy);
2260         struct ieee80211_sub_if_data *sdata;
2261
2262         if (wdev) {
2263                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2264
2265                 switch (type) {
2266                 case NL80211_TX_POWER_AUTOMATIC:
2267                         sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2268                         break;
2269                 case NL80211_TX_POWER_LIMITED:
2270                 case NL80211_TX_POWER_FIXED:
2271                         if (mbm < 0 || (mbm % 100))
2272                                 return -EOPNOTSUPP;
2273                         sdata->user_power_level = MBM_TO_DBM(mbm);
2274                         break;
2275                 }
2276
2277                 ieee80211_recalc_txpower(sdata);
2278
2279                 return 0;
2280         }
2281
2282         switch (type) {
2283         case NL80211_TX_POWER_AUTOMATIC:
2284                 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2285                 break;
2286         case NL80211_TX_POWER_LIMITED:
2287         case NL80211_TX_POWER_FIXED:
2288                 if (mbm < 0 || (mbm % 100))
2289                         return -EOPNOTSUPP;
2290                 local->user_power_level = MBM_TO_DBM(mbm);
2291                 break;
2292         }
2293
2294         mutex_lock(&local->iflist_mtx);
2295         list_for_each_entry(sdata, &local->interfaces, list)
2296                 sdata->user_power_level = local->user_power_level;
2297         list_for_each_entry(sdata, &local->interfaces, list)
2298                 ieee80211_recalc_txpower(sdata);
2299         mutex_unlock(&local->iflist_mtx);
2300
2301         return 0;
2302 }
2303
2304 static int ieee80211_get_tx_power(struct wiphy *wiphy,
2305                                   struct wireless_dev *wdev,
2306                                   int *dbm)
2307 {
2308         struct ieee80211_local *local = wiphy_priv(wiphy);
2309         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2310
2311         if (!local->use_chanctx)
2312                 *dbm = local->hw.conf.power_level;
2313         else
2314                 *dbm = sdata->vif.bss_conf.txpower;
2315
2316         return 0;
2317 }
2318
2319 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
2320                                   const u8 *addr)
2321 {
2322         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2323
2324         memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
2325
2326         return 0;
2327 }
2328
2329 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
2330 {
2331         struct ieee80211_local *local = wiphy_priv(wiphy);
2332
2333         drv_rfkill_poll(local);
2334 }
2335
2336 #ifdef CONFIG_NL80211_TESTMODE
2337 static int ieee80211_testmode_cmd(struct wiphy *wiphy,
2338                                   struct wireless_dev *wdev,
2339                                   void *data, int len)
2340 {
2341         struct ieee80211_local *local = wiphy_priv(wiphy);
2342         struct ieee80211_vif *vif = NULL;
2343
2344         if (!local->ops->testmode_cmd)
2345                 return -EOPNOTSUPP;
2346
2347         if (wdev) {
2348                 struct ieee80211_sub_if_data *sdata;
2349
2350                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2351                 if (sdata->flags & IEEE80211_SDATA_IN_DRIVER)
2352                         vif = &sdata->vif;
2353         }
2354
2355         return local->ops->testmode_cmd(&local->hw, vif, data, len);
2356 }
2357
2358 static int ieee80211_testmode_dump(struct wiphy *wiphy,
2359                                    struct sk_buff *skb,
2360                                    struct netlink_callback *cb,
2361                                    void *data, int len)
2362 {
2363         struct ieee80211_local *local = wiphy_priv(wiphy);
2364
2365         if (!local->ops->testmode_dump)
2366                 return -EOPNOTSUPP;
2367
2368         return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
2369 }
2370 #endif
2371
2372 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
2373                                 enum ieee80211_smps_mode smps_mode)
2374 {
2375         struct sta_info *sta;
2376         enum ieee80211_smps_mode old_req;
2377         int i;
2378
2379         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP))
2380                 return -EINVAL;
2381
2382         if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2383                 return 0;
2384
2385         old_req = sdata->u.ap.req_smps;
2386         sdata->u.ap.req_smps = smps_mode;
2387
2388         /* AUTOMATIC doesn't mean much for AP - don't allow it */
2389         if (old_req == smps_mode ||
2390             smps_mode == IEEE80211_SMPS_AUTOMATIC)
2391                 return 0;
2392
2393          /* If no associated stations, there's no need to do anything */
2394         if (!atomic_read(&sdata->u.ap.num_mcast_sta)) {
2395                 sdata->smps_mode = smps_mode;
2396                 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2397                 return 0;
2398         }
2399
2400         ht_dbg(sdata,
2401                "SMSP %d requested in AP mode, sending Action frame to %d stations\n",
2402                smps_mode, atomic_read(&sdata->u.ap.num_mcast_sta));
2403
2404         mutex_lock(&sdata->local->sta_mtx);
2405         for (i = 0; i < STA_HASH_SIZE; i++) {
2406                 for (sta = rcu_dereference_protected(sdata->local->sta_hash[i],
2407                                 lockdep_is_held(&sdata->local->sta_mtx));
2408                      sta;
2409                      sta = rcu_dereference_protected(sta->hnext,
2410                                 lockdep_is_held(&sdata->local->sta_mtx))) {
2411                         /*
2412                          * Only stations associated to our AP and
2413                          * associated VLANs
2414                          */
2415                         if (sta->sdata->bss != &sdata->u.ap)
2416                                 continue;
2417
2418                         /* This station doesn't support MIMO - skip it */
2419                         if (sta_info_tx_streams(sta) == 1)
2420                                 continue;
2421
2422                         /*
2423                          * Don't wake up a STA just to send the action frame
2424                          * unless we are getting more restrictive.
2425                          */
2426                         if (test_sta_flag(sta, WLAN_STA_PS_STA) &&
2427                             !ieee80211_smps_is_restrictive(sta->known_smps_mode,
2428                                                            smps_mode)) {
2429                                 ht_dbg(sdata,
2430                                        "Won't send SMPS to sleeping STA %pM\n",
2431                                        sta->sta.addr);
2432                                 continue;
2433                         }
2434
2435                         /*
2436                          * If the STA is not authorized, wait until it gets
2437                          * authorized and the action frame will be sent then.
2438                          */
2439                         if (!test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2440                                 continue;
2441
2442                         ht_dbg(sdata, "Sending SMPS to %pM\n", sta->sta.addr);
2443                         ieee80211_send_smps_action(sdata, smps_mode,
2444                                                    sta->sta.addr,
2445                                                    sdata->vif.bss_conf.bssid);
2446                 }
2447         }
2448         mutex_unlock(&sdata->local->sta_mtx);
2449
2450         sdata->smps_mode = smps_mode;
2451         ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2452
2453         return 0;
2454 }
2455
2456 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
2457                                  enum ieee80211_smps_mode smps_mode)
2458 {
2459         const u8 *ap;
2460         enum ieee80211_smps_mode old_req;
2461         int err;
2462
2463         lockdep_assert_held(&sdata->wdev.mtx);
2464
2465         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION))
2466                 return -EINVAL;
2467
2468         old_req = sdata->u.mgd.req_smps;
2469         sdata->u.mgd.req_smps = smps_mode;
2470
2471         if (old_req == smps_mode &&
2472             smps_mode != IEEE80211_SMPS_AUTOMATIC)
2473                 return 0;
2474
2475         /*
2476          * If not associated, or current association is not an HT
2477          * association, there's no need to do anything, just store
2478          * the new value until we associate.
2479          */
2480         if (!sdata->u.mgd.associated ||
2481             sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2482                 return 0;
2483
2484         ap = sdata->u.mgd.associated->bssid;
2485
2486         if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
2487                 if (sdata->u.mgd.powersave)
2488                         smps_mode = IEEE80211_SMPS_DYNAMIC;
2489                 else
2490                         smps_mode = IEEE80211_SMPS_OFF;
2491         }
2492
2493         /* send SM PS frame to AP */
2494         err = ieee80211_send_smps_action(sdata, smps_mode,
2495                                          ap, ap);
2496         if (err)
2497                 sdata->u.mgd.req_smps = old_req;
2498
2499         return err;
2500 }
2501
2502 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2503                                     bool enabled, int timeout)
2504 {
2505         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2506         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2507
2508         if (sdata->vif.type != NL80211_IFTYPE_STATION)
2509                 return -EOPNOTSUPP;
2510
2511         if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
2512                 return -EOPNOTSUPP;
2513
2514         if (enabled == sdata->u.mgd.powersave &&
2515             timeout == local->dynamic_ps_forced_timeout)
2516                 return 0;
2517
2518         sdata->u.mgd.powersave = enabled;
2519         local->dynamic_ps_forced_timeout = timeout;
2520
2521         /* no change, but if automatic follow powersave */
2522         sdata_lock(sdata);
2523         __ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps);
2524         sdata_unlock(sdata);
2525
2526         if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
2527                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2528
2529         ieee80211_recalc_ps(local, -1);
2530         ieee80211_recalc_ps_vif(sdata);
2531
2532         return 0;
2533 }
2534
2535 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
2536                                          struct net_device *dev,
2537                                          s32 rssi_thold, u32 rssi_hyst)
2538 {
2539         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2540         struct ieee80211_vif *vif = &sdata->vif;
2541         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2542
2543         if (rssi_thold == bss_conf->cqm_rssi_thold &&
2544             rssi_hyst == bss_conf->cqm_rssi_hyst)
2545                 return 0;
2546
2547         bss_conf->cqm_rssi_thold = rssi_thold;
2548         bss_conf->cqm_rssi_hyst = rssi_hyst;
2549
2550         /* tell the driver upon association, unless already associated */
2551         if (sdata->u.mgd.associated &&
2552             sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2553                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2554
2555         return 0;
2556 }
2557
2558 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
2559                                       struct net_device *dev,
2560                                       const u8 *addr,
2561                                       const struct cfg80211_bitrate_mask *mask)
2562 {
2563         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2564         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2565         int i, ret;
2566
2567         if (!ieee80211_sdata_running(sdata))
2568                 return -ENETDOWN;
2569
2570         if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) {
2571                 ret = drv_set_bitrate_mask(local, sdata, mask);
2572                 if (ret)
2573                         return ret;
2574         }
2575
2576         for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
2577                 struct ieee80211_supported_band *sband = wiphy->bands[i];
2578                 int j;
2579
2580                 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2581                 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs,
2582                        sizeof(mask->control[i].ht_mcs));
2583
2584                 sdata->rc_has_mcs_mask[i] = false;
2585                 if (!sband)
2586                         continue;
2587
2588                 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++)
2589                         if (~sdata->rc_rateidx_mcs_mask[i][j]) {
2590                                 sdata->rc_has_mcs_mask[i] = true;
2591                                 break;
2592                         }
2593         }
2594
2595         return 0;
2596 }
2597
2598 static int ieee80211_start_roc_work(struct ieee80211_local *local,
2599                                     struct ieee80211_sub_if_data *sdata,
2600                                     struct ieee80211_channel *channel,
2601                                     unsigned int duration, u64 *cookie,
2602                                     struct sk_buff *txskb,
2603                                     enum ieee80211_roc_type type)
2604 {
2605         struct ieee80211_roc_work *roc, *tmp;
2606         bool queued = false;
2607         int ret;
2608
2609         lockdep_assert_held(&local->mtx);
2610
2611         if (local->use_chanctx && !local->ops->remain_on_channel)
2612                 return -EOPNOTSUPP;
2613
2614         roc = kzalloc(sizeof(*roc), GFP_KERNEL);
2615         if (!roc)
2616                 return -ENOMEM;
2617
2618         roc->chan = channel;
2619         roc->duration = duration;
2620         roc->req_duration = duration;
2621         roc->frame = txskb;
2622         roc->type = type;
2623         roc->mgmt_tx_cookie = (unsigned long)txskb;
2624         roc->sdata = sdata;
2625         INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work);
2626         INIT_LIST_HEAD(&roc->dependents);
2627
2628         /* if there's one pending or we're scanning, queue this one */
2629         if (!list_empty(&local->roc_list) ||
2630             local->scanning || local->radar_detect_enabled)
2631                 goto out_check_combine;
2632
2633         /* if not HW assist, just queue & schedule work */
2634         if (!local->ops->remain_on_channel) {
2635                 ieee80211_queue_delayed_work(&local->hw, &roc->work, 0);
2636                 goto out_queue;
2637         }
2638
2639         /* otherwise actually kick it off here (for error handling) */
2640
2641         /*
2642          * If the duration is zero, then the driver
2643          * wouldn't actually do anything. Set it to
2644          * 10 for now.
2645          *
2646          * TODO: cancel the off-channel operation
2647          *       when we get the SKB's TX status and
2648          *       the wait time was zero before.
2649          */
2650         if (!duration)
2651                 duration = 10;
2652
2653         ret = drv_remain_on_channel(local, sdata, channel, duration, type);
2654         if (ret) {
2655                 kfree(roc);
2656                 return ret;
2657         }
2658
2659         roc->started = true;
2660         goto out_queue;
2661
2662  out_check_combine:
2663         list_for_each_entry(tmp, &local->roc_list, list) {
2664                 if (tmp->chan != channel || tmp->sdata != sdata)
2665                         continue;
2666
2667                 /*
2668                  * Extend this ROC if possible:
2669                  *
2670                  * If it hasn't started yet, just increase the duration
2671                  * and add the new one to the list of dependents.
2672                  * If the type of the new ROC has higher priority, modify the
2673                  * type of the previous one to match that of the new one.
2674                  */
2675                 if (!tmp->started) {
2676                         list_add_tail(&roc->list, &tmp->dependents);
2677                         tmp->duration = max(tmp->duration, roc->duration);
2678                         tmp->type = max(tmp->type, roc->type);
2679                         queued = true;
2680                         break;
2681                 }
2682
2683                 /* If it has already started, it's more difficult ... */
2684                 if (local->ops->remain_on_channel) {
2685                         unsigned long j = jiffies;
2686
2687                         /*
2688                          * In the offloaded ROC case, if it hasn't begun, add
2689                          * this new one to the dependent list to be handled
2690                          * when the master one begins. If it has begun,
2691                          * check that there's still a minimum time left and
2692                          * if so, start this one, transmitting the frame, but
2693                          * add it to the list directly after this one with
2694                          * a reduced time so we'll ask the driver to execute
2695                          * it right after finishing the previous one, in the
2696                          * hope that it'll also be executed right afterwards,
2697                          * effectively extending the old one.
2698                          * If there's no minimum time left, just add it to the
2699                          * normal list.
2700                          * TODO: the ROC type is ignored here, assuming that it
2701                          * is better to immediately use the current ROC.
2702                          */
2703                         if (!tmp->hw_begun) {
2704                                 list_add_tail(&roc->list, &tmp->dependents);
2705                                 queued = true;
2706                                 break;
2707                         }
2708
2709                         if (time_before(j + IEEE80211_ROC_MIN_LEFT,
2710                                         tmp->hw_start_time +
2711                                         msecs_to_jiffies(tmp->duration))) {
2712                                 int new_dur;
2713
2714                                 ieee80211_handle_roc_started(roc);
2715
2716                                 new_dur = roc->duration -
2717                                           jiffies_to_msecs(tmp->hw_start_time +
2718                                                            msecs_to_jiffies(
2719                                                                 tmp->duration) -
2720                                                            j);
2721
2722                                 if (new_dur > 0) {
2723                                         /* add right after tmp */
2724                                         list_add(&roc->list, &tmp->list);
2725                                 } else {
2726                                         list_add_tail(&roc->list,
2727                                                       &tmp->dependents);
2728                                 }
2729                                 queued = true;
2730                         }
2731                 } else if (del_timer_sync(&tmp->work.timer)) {
2732                         unsigned long new_end;
2733
2734                         /*
2735                          * In the software ROC case, cancel the timer, if
2736                          * that fails then the finish work is already
2737                          * queued/pending and thus we queue the new ROC
2738                          * normally, if that succeeds then we can extend
2739                          * the timer duration and TX the frame (if any.)
2740                          */
2741
2742                         list_add_tail(&roc->list, &tmp->dependents);
2743                         queued = true;
2744
2745                         new_end = jiffies + msecs_to_jiffies(roc->duration);
2746
2747                         /* ok, it was started & we canceled timer */
2748                         if (time_after(new_end, tmp->work.timer.expires))
2749                                 mod_timer(&tmp->work.timer, new_end);
2750                         else
2751                                 add_timer(&tmp->work.timer);
2752
2753                         ieee80211_handle_roc_started(roc);
2754                 }
2755                 break;
2756         }
2757
2758  out_queue:
2759         if (!queued)
2760                 list_add_tail(&roc->list, &local->roc_list);
2761
2762         /*
2763          * cookie is either the roc cookie (for normal roc)
2764          * or the SKB (for mgmt TX)
2765          */
2766         if (!txskb) {
2767                 /* local->mtx protects this */
2768                 local->roc_cookie_counter++;
2769                 roc->cookie = local->roc_cookie_counter;
2770                 /* wow, you wrapped 64 bits ... more likely a bug */
2771                 if (WARN_ON(roc->cookie == 0)) {
2772                         roc->cookie = 1;
2773                         local->roc_cookie_counter++;
2774                 }
2775                 *cookie = roc->cookie;
2776         } else {
2777                 *cookie = (unsigned long)txskb;
2778         }
2779
2780         return 0;
2781 }
2782
2783 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
2784                                        struct wireless_dev *wdev,
2785                                        struct ieee80211_channel *chan,
2786                                        unsigned int duration,
2787                                        u64 *cookie)
2788 {
2789         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2790         struct ieee80211_local *local = sdata->local;
2791         int ret;
2792
2793         mutex_lock(&local->mtx);
2794         ret = ieee80211_start_roc_work(local, sdata, chan,
2795                                        duration, cookie, NULL,
2796                                        IEEE80211_ROC_TYPE_NORMAL);
2797         mutex_unlock(&local->mtx);
2798
2799         return ret;
2800 }
2801
2802 static int ieee80211_cancel_roc(struct ieee80211_local *local,
2803                                 u64 cookie, bool mgmt_tx)
2804 {
2805         struct ieee80211_roc_work *roc, *tmp, *found = NULL;
2806         int ret;
2807
2808         mutex_lock(&local->mtx);
2809         list_for_each_entry_safe(roc, tmp, &local->roc_list, list) {
2810                 struct ieee80211_roc_work *dep, *tmp2;
2811
2812                 list_for_each_entry_safe(dep, tmp2, &roc->dependents, list) {
2813                         if (!mgmt_tx && dep->cookie != cookie)
2814                                 continue;
2815                         else if (mgmt_tx && dep->mgmt_tx_cookie != cookie)
2816                                 continue;
2817                         /* found dependent item -- just remove it */
2818                         list_del(&dep->list);
2819                         mutex_unlock(&local->mtx);
2820
2821                         ieee80211_roc_notify_destroy(dep, true);
2822                         return 0;
2823                 }
2824
2825                 if (!mgmt_tx && roc->cookie != cookie)
2826                         continue;
2827                 else if (mgmt_tx && roc->mgmt_tx_cookie != cookie)
2828                         continue;
2829
2830                 found = roc;
2831                 break;
2832         }
2833
2834         if (!found) {
2835                 mutex_unlock(&local->mtx);
2836                 return -ENOENT;
2837         }
2838
2839         /*
2840          * We found the item to cancel, so do that. Note that it
2841          * may have dependents, which we also cancel (and send
2842          * the expired signal for.) Not doing so would be quite
2843          * tricky here, but we may need to fix it later.
2844          */
2845
2846         if (local->ops->remain_on_channel) {
2847                 if (found->started) {
2848                         ret = drv_cancel_remain_on_channel(local);
2849                         if (WARN_ON_ONCE(ret)) {
2850                                 mutex_unlock(&local->mtx);
2851                                 return ret;
2852                         }
2853                 }
2854
2855                 list_del(&found->list);
2856
2857                 if (found->started)
2858                         ieee80211_start_next_roc(local);
2859                 mutex_unlock(&local->mtx);
2860
2861                 ieee80211_roc_notify_destroy(found, true);
2862         } else {
2863                 /* work may be pending so use it all the time */
2864                 found->abort = true;
2865                 ieee80211_queue_delayed_work(&local->hw, &found->work, 0);
2866
2867                 mutex_unlock(&local->mtx);
2868
2869                 /* work will clean up etc */
2870                 flush_delayed_work(&found->work);
2871                 WARN_ON(!found->to_be_freed);
2872                 kfree(found);
2873         }
2874
2875         return 0;
2876 }
2877
2878 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
2879                                               struct wireless_dev *wdev,
2880                                               u64 cookie)
2881 {
2882         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2883         struct ieee80211_local *local = sdata->local;
2884
2885         return ieee80211_cancel_roc(local, cookie, false);
2886 }
2887
2888 static int ieee80211_start_radar_detection(struct wiphy *wiphy,
2889                                            struct net_device *dev,
2890                                            struct cfg80211_chan_def *chandef)
2891 {
2892         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2893         struct ieee80211_local *local = sdata->local;
2894         unsigned long timeout;
2895         int err;
2896
2897         if (!list_empty(&local->roc_list) || local->scanning)
2898                 return -EBUSY;
2899
2900         /* whatever, but channel contexts should not complain about that one */
2901         sdata->smps_mode = IEEE80211_SMPS_OFF;
2902         sdata->needed_rx_chains = local->rx_chains;
2903         sdata->radar_required = true;
2904
2905         mutex_lock(&local->iflist_mtx);
2906         err = ieee80211_vif_use_channel(sdata, chandef,
2907                                         IEEE80211_CHANCTX_SHARED);
2908         mutex_unlock(&local->iflist_mtx);
2909         if (err)
2910                 return err;
2911
2912         timeout = msecs_to_jiffies(IEEE80211_DFS_MIN_CAC_TIME_MS);
2913         ieee80211_queue_delayed_work(&sdata->local->hw,
2914                                      &sdata->dfs_cac_timer_work, timeout);
2915
2916         return 0;
2917 }
2918
2919 static struct cfg80211_beacon_data *
2920 cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon)
2921 {
2922         struct cfg80211_beacon_data *new_beacon;
2923         u8 *pos;
2924         int len;
2925
2926         len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len +
2927               beacon->proberesp_ies_len + beacon->assocresp_ies_len +
2928               beacon->probe_resp_len;
2929
2930         new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL);
2931         if (!new_beacon)
2932                 return NULL;
2933
2934         pos = (u8 *)(new_beacon + 1);
2935         if (beacon->head_len) {
2936                 new_beacon->head_len = beacon->head_len;
2937                 new_beacon->head = pos;
2938                 memcpy(pos, beacon->head, beacon->head_len);
2939                 pos += beacon->head_len;
2940         }
2941         if (beacon->tail_len) {
2942                 new_beacon->tail_len = beacon->tail_len;
2943                 new_beacon->tail = pos;
2944                 memcpy(pos, beacon->tail, beacon->tail_len);
2945                 pos += beacon->tail_len;
2946         }
2947         if (beacon->beacon_ies_len) {
2948                 new_beacon->beacon_ies_len = beacon->beacon_ies_len;
2949                 new_beacon->beacon_ies = pos;
2950                 memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len);
2951                 pos += beacon->beacon_ies_len;
2952         }
2953         if (beacon->proberesp_ies_len) {
2954                 new_beacon->proberesp_ies_len = beacon->proberesp_ies_len;
2955                 new_beacon->proberesp_ies = pos;
2956                 memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len);
2957                 pos += beacon->proberesp_ies_len;
2958         }
2959         if (beacon->assocresp_ies_len) {
2960                 new_beacon->assocresp_ies_len = beacon->assocresp_ies_len;
2961                 new_beacon->assocresp_ies = pos;
2962                 memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len);
2963                 pos += beacon->assocresp_ies_len;
2964         }
2965         if (beacon->probe_resp_len) {
2966                 new_beacon->probe_resp_len = beacon->probe_resp_len;
2967                 beacon->probe_resp = pos;
2968                 memcpy(pos, beacon->probe_resp, beacon->probe_resp_len);
2969                 pos += beacon->probe_resp_len;
2970         }
2971
2972         return new_beacon;
2973 }
2974
2975 void ieee80211_csa_finalize_work(struct work_struct *work)
2976 {
2977         struct ieee80211_sub_if_data *sdata =
2978                 container_of(work, struct ieee80211_sub_if_data,
2979                              csa_finalize_work);
2980         struct ieee80211_local *local = sdata->local;
2981         int err, changed = 0;
2982
2983         sdata_lock(sdata);
2984         /* AP might have been stopped while waiting for the lock. */
2985         if (!sdata->vif.csa_active)
2986                 goto unlock;
2987
2988         if (!ieee80211_sdata_running(sdata))
2989                 goto unlock;
2990
2991         sdata->radar_required = sdata->csa_radar_required;
2992         err = ieee80211_vif_change_channel(sdata, &changed);
2993         if (WARN_ON(err < 0))
2994                 goto unlock;
2995
2996         if (!local->use_chanctx) {
2997                 local->_oper_chandef = sdata->csa_chandef;
2998                 ieee80211_hw_config(local, 0);
2999         }
3000
3001         ieee80211_bss_info_change_notify(sdata, changed);
3002
3003         sdata->vif.csa_active = false;
3004         switch (sdata->vif.type) {
3005         case NL80211_IFTYPE_AP:
3006                 err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon);
3007                 if (err < 0)
3008                         goto unlock;
3009
3010                 changed |= err;
3011                 kfree(sdata->u.ap.next_beacon);
3012                 sdata->u.ap.next_beacon = NULL;
3013
3014                 ieee80211_bss_info_change_notify(sdata, err);
3015                 break;
3016         case NL80211_IFTYPE_ADHOC:
3017                 ieee80211_ibss_finish_csa(sdata);
3018                 break;
3019 #ifdef CONFIG_MAC80211_MESH
3020         case NL80211_IFTYPE_MESH_POINT:
3021                 err = ieee80211_mesh_finish_csa(sdata);
3022                 if (err < 0)
3023                         goto unlock;
3024                 break;
3025 #endif
3026         default:
3027                 WARN_ON(1);
3028                 goto unlock;
3029         }
3030
3031         ieee80211_wake_queues_by_reason(&sdata->local->hw,
3032                                         IEEE80211_MAX_QUEUE_MAP,
3033                                         IEEE80211_QUEUE_STOP_REASON_CSA);
3034
3035         cfg80211_ch_switch_notify(sdata->dev, &sdata->csa_chandef);
3036
3037 unlock:
3038         sdata_unlock(sdata);
3039 }
3040
3041 static int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3042                                     struct cfg80211_csa_settings *params)
3043 {
3044         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3045         struct ieee80211_local *local = sdata->local;
3046         struct ieee80211_chanctx_conf *chanctx_conf;
3047         struct ieee80211_chanctx *chanctx;
3048         struct ieee80211_if_mesh __maybe_unused *ifmsh;
3049         int err, num_chanctx;
3050
3051         lockdep_assert_held(&sdata->wdev.mtx);
3052
3053         if (!list_empty(&local->roc_list) || local->scanning)
3054                 return -EBUSY;
3055
3056         if (sdata->wdev.cac_started)
3057                 return -EBUSY;
3058
3059         if (cfg80211_chandef_identical(&params->chandef,
3060                                        &sdata->vif.bss_conf.chandef))
3061                 return -EINVAL;
3062
3063         rcu_read_lock();
3064         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3065         if (!chanctx_conf) {
3066                 rcu_read_unlock();
3067                 return -EBUSY;
3068         }
3069
3070         /* don't handle for multi-VIF cases */
3071         chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf);
3072         if (chanctx->refcount > 1) {
3073                 rcu_read_unlock();
3074                 return -EBUSY;
3075         }
3076         num_chanctx = 0;
3077         list_for_each_entry_rcu(chanctx, &local->chanctx_list, list)
3078                 num_chanctx++;
3079         rcu_read_unlock();
3080
3081         if (num_chanctx > 1)
3082                 return -EBUSY;
3083
3084         /* don't allow another channel switch if one is already active. */
3085         if (sdata->vif.csa_active)
3086                 return -EBUSY;
3087
3088         switch (sdata->vif.type) {
3089         case NL80211_IFTYPE_AP:
3090                 sdata->csa_counter_offset_beacon =
3091                         params->counter_offset_beacon;
3092                 sdata->csa_counter_offset_presp = params->counter_offset_presp;
3093                 sdata->u.ap.next_beacon =
3094                         cfg80211_beacon_dup(&params->beacon_after);
3095                 if (!sdata->u.ap.next_beacon)
3096                         return -ENOMEM;
3097
3098                 err = ieee80211_assign_beacon(sdata, &params->beacon_csa);
3099                 if (err < 0) {
3100                         kfree(sdata->u.ap.next_beacon);
3101                         return err;
3102                 }
3103                 break;
3104         case NL80211_IFTYPE_ADHOC:
3105                 if (!sdata->vif.bss_conf.ibss_joined)
3106                         return -EINVAL;
3107
3108                 if (params->chandef.width != sdata->u.ibss.chandef.width)
3109                         return -EINVAL;
3110
3111                 switch (params->chandef.width) {
3112                 case NL80211_CHAN_WIDTH_40:
3113                         if (cfg80211_get_chandef_type(&params->chandef) !=
3114                             cfg80211_get_chandef_type(&sdata->u.ibss.chandef))
3115                                 return -EINVAL;
3116                 case NL80211_CHAN_WIDTH_5:
3117                 case NL80211_CHAN_WIDTH_10:
3118                 case NL80211_CHAN_WIDTH_20_NOHT:
3119                 case NL80211_CHAN_WIDTH_20:
3120                         break;
3121                 default:
3122                         return -EINVAL;
3123                 }
3124
3125                 /* changes into another band are not supported */
3126                 if (sdata->u.ibss.chandef.chan->band !=
3127                     params->chandef.chan->band)
3128                         return -EINVAL;
3129
3130                 err = ieee80211_ibss_csa_beacon(sdata, params);
3131                 if (err < 0)
3132                         return err;
3133                 break;
3134 #ifdef CONFIG_MAC80211_MESH
3135         case NL80211_IFTYPE_MESH_POINT:
3136                 ifmsh = &sdata->u.mesh;
3137
3138                 if (!ifmsh->mesh_id)
3139                         return -EINVAL;
3140
3141                 if (params->chandef.width != sdata->vif.bss_conf.chandef.width)
3142                         return -EINVAL;
3143
3144                 /* changes into another band are not supported */
3145                 if (sdata->vif.bss_conf.chandef.chan->band !=
3146                     params->chandef.chan->band)
3147                         return -EINVAL;
3148
3149                 ifmsh->chsw_init = true;
3150                 if (!ifmsh->pre_value)
3151                         ifmsh->pre_value = 1;
3152                 else
3153                         ifmsh->pre_value++;
3154
3155                 err = ieee80211_mesh_csa_beacon(sdata, params, true);
3156                 if (err < 0) {
3157                         ifmsh->chsw_init = false;
3158                         return err;
3159                 }
3160                 break;
3161 #endif
3162         default:
3163                 return -EOPNOTSUPP;
3164         }
3165
3166         sdata->csa_radar_required = params->radar_required;
3167
3168         if (params->block_tx)
3169                 ieee80211_stop_queues_by_reason(&local->hw,
3170                                 IEEE80211_MAX_QUEUE_MAP,
3171                                 IEEE80211_QUEUE_STOP_REASON_CSA);
3172
3173         sdata->csa_chandef = params->chandef;
3174         sdata->vif.csa_active = true;
3175
3176         ieee80211_bss_info_change_notify(sdata, err);
3177         drv_channel_switch_beacon(sdata, &params->chandef);
3178
3179         return 0;
3180 }
3181
3182 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
3183                              struct cfg80211_mgmt_tx_params *params,
3184                              u64 *cookie)
3185 {
3186         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3187         struct ieee80211_local *local = sdata->local;
3188         struct sk_buff *skb;
3189         struct sta_info *sta;
3190         const struct ieee80211_mgmt *mgmt = (void *)params->buf;
3191         bool need_offchan = false;
3192         u32 flags;
3193         int ret;
3194
3195         if (params->dont_wait_for_ack)
3196                 flags = IEEE80211_TX_CTL_NO_ACK;
3197         else
3198                 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
3199                         IEEE80211_TX_CTL_REQ_TX_STATUS;
3200
3201         if (params->no_cck)
3202                 flags |= IEEE80211_TX_CTL_NO_CCK_RATE;
3203
3204         switch (sdata->vif.type) {
3205         case NL80211_IFTYPE_ADHOC:
3206                 if (!sdata->vif.bss_conf.ibss_joined)
3207                         need_offchan = true;
3208                 /* fall through */
3209 #ifdef CONFIG_MAC80211_MESH
3210         case NL80211_IFTYPE_MESH_POINT:
3211                 if (ieee80211_vif_is_mesh(&sdata->vif) &&
3212                     !sdata->u.mesh.mesh_id_len)
3213                         need_offchan = true;
3214                 /* fall through */
3215 #endif
3216         case NL80211_IFTYPE_AP:
3217         case NL80211_IFTYPE_AP_VLAN:
3218         case NL80211_IFTYPE_P2P_GO:
3219                 if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
3220                     !ieee80211_vif_is_mesh(&sdata->vif) &&
3221                     !rcu_access_pointer(sdata->bss->beacon))
3222                         need_offchan = true;
3223                 if (!ieee80211_is_action(mgmt->frame_control) ||
3224                     mgmt->u.action.category == WLAN_CATEGORY_PUBLIC ||
3225                     mgmt->u.action.category == WLAN_CATEGORY_SELF_PROTECTED ||
3226                     mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT)
3227                         break;
3228                 rcu_read_lock();
3229                 sta = sta_info_get(sdata, mgmt->da);
3230                 rcu_read_unlock();
3231                 if (!sta)
3232                         return -ENOLINK;
3233                 break;
3234         case NL80211_IFTYPE_STATION:
3235         case NL80211_IFTYPE_P2P_CLIENT:
3236                 if (!sdata->u.mgd.associated)
3237                         need_offchan = true;
3238                 break;
3239         case NL80211_IFTYPE_P2P_DEVICE:
3240                 need_offchan = true;
3241                 break;
3242         default:
3243                 return -EOPNOTSUPP;
3244         }
3245
3246         /* configurations requiring offchan cannot work if no channel has been
3247          * specified
3248          */
3249         if (need_offchan && !params->chan)
3250                 return -EINVAL;
3251
3252         mutex_lock(&local->mtx);
3253
3254         /* Check if the operating channel is the requested channel */
3255         if (!need_offchan) {
3256                 struct ieee80211_chanctx_conf *chanctx_conf;
3257
3258                 rcu_read_lock();
3259                 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3260
3261                 if (chanctx_conf) {
3262                         need_offchan = params->chan &&
3263                                        (params->chan !=
3264                                         chanctx_conf->def.chan);
3265                 } else if (!params->chan) {
3266                         ret = -EINVAL;
3267                         rcu_read_unlock();
3268                         goto out_unlock;
3269                 } else {
3270                         need_offchan = true;
3271                 }
3272                 rcu_read_unlock();
3273         }
3274
3275         if (need_offchan && !params->offchan) {
3276                 ret = -EBUSY;
3277                 goto out_unlock;
3278         }
3279
3280         skb = dev_alloc_skb(local->hw.extra_tx_headroom + params->len);
3281         if (!skb) {
3282                 ret = -ENOMEM;
3283                 goto out_unlock;
3284         }
3285         skb_reserve(skb, local->hw.extra_tx_headroom);
3286
3287         memcpy(skb_put(skb, params->len), params->buf, params->len);
3288
3289         IEEE80211_SKB_CB(skb)->flags = flags;
3290
3291         skb->dev = sdata->dev;
3292
3293         if (!need_offchan) {
3294                 *cookie = (unsigned long) skb;
3295                 ieee80211_tx_skb(sdata, skb);
3296                 ret = 0;
3297                 goto out_unlock;
3298         }
3299
3300         IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN |
3301                                         IEEE80211_TX_INTFL_OFFCHAN_TX_OK;
3302         if (local->hw.flags & IEEE80211_HW_QUEUE_CONTROL)
3303                 IEEE80211_SKB_CB(skb)->hw_queue =
3304                         local->hw.offchannel_tx_hw_queue;
3305
3306         /* This will handle all kinds of coalescing and immediate TX */
3307         ret = ieee80211_start_roc_work(local, sdata, params->chan,
3308                                        params->wait, cookie, skb,
3309                                        IEEE80211_ROC_TYPE_MGMT_TX);
3310         if (ret)
3311                 kfree_skb(skb);
3312  out_unlock:
3313         mutex_unlock(&local->mtx);
3314         return ret;
3315 }
3316
3317 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
3318                                          struct wireless_dev *wdev,
3319                                          u64 cookie)
3320 {
3321         struct ieee80211_local *local = wiphy_priv(wiphy);
3322
3323         return ieee80211_cancel_roc(local, cookie, true);
3324 }
3325
3326 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
3327                                           struct wireless_dev *wdev,
3328                                           u16 frame_type, bool reg)
3329 {
3330         struct ieee80211_local *local = wiphy_priv(wiphy);
3331
3332         switch (frame_type) {
3333         case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ:
3334                 if (reg)
3335                         local->probe_req_reg++;
3336                 else
3337                         local->probe_req_reg--;
3338
3339                 if (!local->open_count)
3340                         break;
3341
3342                 ieee80211_queue_work(&local->hw, &local->reconfig_filter);
3343                 break;
3344         default:
3345                 break;
3346         }
3347 }
3348
3349 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
3350 {
3351         struct ieee80211_local *local = wiphy_priv(wiphy);
3352
3353         if (local->started)
3354                 return -EOPNOTSUPP;
3355
3356         return drv_set_antenna(local, tx_ant, rx_ant);
3357 }
3358
3359 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
3360 {
3361         struct ieee80211_local *local = wiphy_priv(wiphy);
3362
3363         return drv_get_antenna(local, tx_ant, rx_ant);
3364 }
3365
3366 static int ieee80211_set_ringparam(struct wiphy *wiphy, u32 tx, u32 rx)
3367 {
3368         struct ieee80211_local *local = wiphy_priv(wiphy);
3369
3370         return drv_set_ringparam(local, tx, rx);
3371 }
3372
3373 static void ieee80211_get_ringparam(struct wiphy *wiphy,
3374                                     u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max)
3375 {
3376         struct ieee80211_local *local = wiphy_priv(wiphy);
3377
3378         drv_get_ringparam(local, tx, tx_max, rx, rx_max);
3379 }
3380
3381 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
3382                                     struct net_device *dev,
3383                                     struct cfg80211_gtk_rekey_data *data)
3384 {
3385         struct ieee80211_local *local = wiphy_priv(wiphy);
3386         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3387
3388         if (!local->ops->set_rekey_data)
3389                 return -EOPNOTSUPP;
3390
3391         drv_set_rekey_data(local, sdata, data);
3392
3393         return 0;
3394 }
3395
3396 static void ieee80211_tdls_add_ext_capab(struct sk_buff *skb)
3397 {
3398         u8 *pos = (void *)skb_put(skb, 7);
3399
3400         *pos++ = WLAN_EID_EXT_CAPABILITY;
3401         *pos++ = 5; /* len */
3402         *pos++ = 0x0;
3403         *pos++ = 0x0;
3404         *pos++ = 0x0;
3405         *pos++ = 0x0;
3406         *pos++ = WLAN_EXT_CAPA5_TDLS_ENABLED;
3407 }
3408
3409 static u16 ieee80211_get_tdls_sta_capab(struct ieee80211_sub_if_data *sdata)
3410 {
3411         struct ieee80211_local *local = sdata->local;
3412         u16 capab;
3413
3414         capab = 0;
3415         if (ieee80211_get_sdata_band(sdata) != IEEE80211_BAND_2GHZ)
3416                 return capab;
3417
3418         if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE))
3419                 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
3420         if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE))
3421                 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
3422
3423         return capab;
3424 }
3425
3426 static void ieee80211_tdls_add_link_ie(struct sk_buff *skb, u8 *src_addr,
3427                                        u8 *peer, u8 *bssid)
3428 {
3429         struct ieee80211_tdls_lnkie *lnkid;
3430
3431         lnkid = (void *)skb_put(skb, sizeof(struct ieee80211_tdls_lnkie));
3432
3433         lnkid->ie_type = WLAN_EID_LINK_ID;
3434         lnkid->ie_len = sizeof(struct ieee80211_tdls_lnkie) - 2;
3435
3436         memcpy(lnkid->bssid, bssid, ETH_ALEN);
3437         memcpy(lnkid->init_sta, src_addr, ETH_ALEN);
3438         memcpy(lnkid->resp_sta, peer, ETH_ALEN);
3439 }
3440
3441 static int
3442 ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev,
3443                                u8 *peer, u8 action_code, u8 dialog_token,
3444                                u16 status_code, struct sk_buff *skb)
3445 {
3446         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3447         enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
3448         struct ieee80211_tdls_data *tf;
3449
3450         tf = (void *)skb_put(skb, offsetof(struct ieee80211_tdls_data, u));
3451
3452         memcpy(tf->da, peer, ETH_ALEN);
3453         memcpy(tf->sa, sdata->vif.addr, ETH_ALEN);
3454         tf->ether_type = cpu_to_be16(ETH_P_TDLS);
3455         tf->payload_type = WLAN_TDLS_SNAP_RFTYPE;
3456
3457         switch (action_code) {
3458         case WLAN_TDLS_SETUP_REQUEST:
3459                 tf->category = WLAN_CATEGORY_TDLS;
3460                 tf->action_code = WLAN_TDLS_SETUP_REQUEST;
3461
3462                 skb_put(skb, sizeof(tf->u.setup_req));
3463                 tf->u.setup_req.dialog_token = dialog_token;
3464                 tf->u.setup_req.capability =
3465                         cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
3466
3467                 ieee80211_add_srates_ie(sdata, skb, false, band);
3468                 ieee80211_add_ext_srates_ie(sdata, skb, false, band);
3469                 ieee80211_tdls_add_ext_capab(skb);
3470                 break;
3471         case WLAN_TDLS_SETUP_RESPONSE:
3472                 tf->category = WLAN_CATEGORY_TDLS;
3473                 tf->action_code = WLAN_TDLS_SETUP_RESPONSE;
3474
3475                 skb_put(skb, sizeof(tf->u.setup_resp));
3476                 tf->u.setup_resp.status_code = cpu_to_le16(status_code);
3477                 tf->u.setup_resp.dialog_token = dialog_token;
3478                 tf->u.setup_resp.capability =
3479                         cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
3480
3481                 ieee80211_add_srates_ie(sdata, skb, false, band);
3482                 ieee80211_add_ext_srates_ie(sdata, skb, false, band);
3483                 ieee80211_tdls_add_ext_capab(skb);
3484                 break;
3485         case WLAN_TDLS_SETUP_CONFIRM:
3486                 tf->category = WLAN_CATEGORY_TDLS;
3487                 tf->action_code = WLAN_TDLS_SETUP_CONFIRM;
3488
3489                 skb_put(skb, sizeof(tf->u.setup_cfm));
3490                 tf->u.setup_cfm.status_code = cpu_to_le16(status_code);
3491                 tf->u.setup_cfm.dialog_token = dialog_token;
3492                 break;
3493         case WLAN_TDLS_TEARDOWN:
3494                 tf->category = WLAN_CATEGORY_TDLS;
3495                 tf->action_code = WLAN_TDLS_TEARDOWN;
3496
3497                 skb_put(skb, sizeof(tf->u.teardown));
3498                 tf->u.teardown.reason_code = cpu_to_le16(status_code);
3499                 break;
3500         case WLAN_TDLS_DISCOVERY_REQUEST:
3501                 tf->category = WLAN_CATEGORY_TDLS;
3502                 tf->action_code = WLAN_TDLS_DISCOVERY_REQUEST;
3503
3504                 skb_put(skb, sizeof(tf->u.discover_req));
3505                 tf->u.discover_req.dialog_token = dialog_token;
3506                 break;
3507         default:
3508                 return -EINVAL;
3509         }
3510
3511         return 0;
3512 }
3513
3514 static int
3515 ieee80211_prep_tdls_direct(struct wiphy *wiphy, struct net_device *dev,
3516                            u8 *peer, u8 action_code, u8 dialog_token,
3517                            u16 status_code, struct sk_buff *skb)
3518 {
3519         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3520         enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
3521         struct ieee80211_mgmt *mgmt;
3522
3523         mgmt = (void *)skb_put(skb, 24);
3524         memset(mgmt, 0, 24);
3525         memcpy(mgmt->da, peer, ETH_ALEN);
3526         memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
3527         memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN);
3528
3529         mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
3530                                           IEEE80211_STYPE_ACTION);
3531
3532         switch (action_code) {
3533         case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
3534                 skb_put(skb, 1 + sizeof(mgmt->u.action.u.tdls_discover_resp));
3535                 mgmt->u.action.category = WLAN_CATEGORY_PUBLIC;
3536                 mgmt->u.action.u.tdls_discover_resp.action_code =
3537                         WLAN_PUB_ACTION_TDLS_DISCOVER_RES;
3538                 mgmt->u.action.u.tdls_discover_resp.dialog_token =
3539                         dialog_token;
3540                 mgmt->u.action.u.tdls_discover_resp.capability =
3541                         cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
3542
3543                 ieee80211_add_srates_ie(sdata, skb, false, band);
3544                 ieee80211_add_ext_srates_ie(sdata, skb, false, band);
3545                 ieee80211_tdls_add_ext_capab(skb);
3546                 break;
3547         default:
3548                 return -EINVAL;
3549         }
3550
3551         return 0;
3552 }
3553
3554 static int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
3555                                u8 *peer, u8 action_code, u8 dialog_token,
3556                                u16 status_code, const u8 *extra_ies,
3557                                size_t extra_ies_len)
3558 {
3559         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3560         struct ieee80211_local *local = sdata->local;
3561         struct sk_buff *skb = NULL;
3562         bool send_direct;
3563         int ret;
3564
3565         if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
3566                 return -ENOTSUPP;
3567
3568         /* make sure we are in managed mode, and associated */
3569         if (sdata->vif.type != NL80211_IFTYPE_STATION ||
3570             !sdata->u.mgd.associated)
3571                 return -EINVAL;
3572
3573         tdls_dbg(sdata, "TDLS mgmt action %d peer %pM\n",
3574                  action_code, peer);
3575
3576         skb = dev_alloc_skb(local->hw.extra_tx_headroom +
3577                             max(sizeof(struct ieee80211_mgmt),
3578                                 sizeof(struct ieee80211_tdls_data)) +
3579                             50 + /* supported rates */
3580                             7 + /* ext capab */
3581                             extra_ies_len +
3582                             sizeof(struct ieee80211_tdls_lnkie));
3583         if (!skb)
3584                 return -ENOMEM;
3585
3586         skb_reserve(skb, local->hw.extra_tx_headroom);
3587
3588         switch (action_code) {
3589         case WLAN_TDLS_SETUP_REQUEST:
3590         case WLAN_TDLS_SETUP_RESPONSE:
3591         case WLAN_TDLS_SETUP_CONFIRM:
3592         case WLAN_TDLS_TEARDOWN:
3593         case WLAN_TDLS_DISCOVERY_REQUEST:
3594                 ret = ieee80211_prep_tdls_encap_data(wiphy, dev, peer,
3595                                                      action_code, dialog_token,
3596                                                      status_code, skb);
3597                 send_direct = false;
3598                 break;
3599         case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
3600                 ret = ieee80211_prep_tdls_direct(wiphy, dev, peer, action_code,
3601                                                  dialog_token, status_code,
3602                                                  skb);
3603                 send_direct = true;
3604                 break;
3605         default:
3606                 ret = -ENOTSUPP;
3607                 break;
3608         }
3609
3610         if (ret < 0)
3611                 goto fail;
3612
3613         if (extra_ies_len)
3614                 memcpy(skb_put(skb, extra_ies_len), extra_ies, extra_ies_len);
3615
3616         /* the TDLS link IE is always added last */
3617         switch (action_code) {
3618         case WLAN_TDLS_SETUP_REQUEST:
3619         case WLAN_TDLS_SETUP_CONFIRM:
3620         case WLAN_TDLS_TEARDOWN:
3621         case WLAN_TDLS_DISCOVERY_REQUEST:
3622                 /* we are the initiator */
3623                 ieee80211_tdls_add_link_ie(skb, sdata->vif.addr, peer,
3624                                            sdata->u.mgd.bssid);
3625                 break;
3626         case WLAN_TDLS_SETUP_RESPONSE:
3627         case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
3628                 /* we are the responder */
3629                 ieee80211_tdls_add_link_ie(skb, peer, sdata->vif.addr,
3630                                            sdata->u.mgd.bssid);
3631                 break;
3632         default:
3633                 ret = -ENOTSUPP;
3634                 goto fail;
3635         }
3636
3637         if (send_direct) {
3638                 ieee80211_tx_skb(sdata, skb);
3639                 return 0;
3640         }
3641
3642         /*
3643          * According to 802.11z: Setup req/resp are sent in AC_BK, otherwise
3644          * we should default to AC_VI.
3645          */
3646         switch (action_code) {
3647         case WLAN_TDLS_SETUP_REQUEST:
3648         case WLAN_TDLS_SETUP_RESPONSE:
3649                 skb_set_queue_mapping(skb, IEEE80211_AC_BK);
3650                 skb->priority = 2;
3651                 break;
3652         default:
3653                 skb_set_queue_mapping(skb, IEEE80211_AC_VI);
3654                 skb->priority = 5;
3655                 break;
3656         }
3657
3658         /* disable bottom halves when entering the Tx path */
3659         local_bh_disable();
3660         ret = ieee80211_subif_start_xmit(skb, dev);
3661         local_bh_enable();
3662
3663         return ret;
3664
3665 fail:
3666         dev_kfree_skb(skb);
3667         return ret;
3668 }
3669
3670 static int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
3671                                u8 *peer, enum nl80211_tdls_operation oper)
3672 {
3673         struct sta_info *sta;
3674         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3675
3676         if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
3677                 return -ENOTSUPP;
3678
3679         if (sdata->vif.type != NL80211_IFTYPE_STATION)
3680                 return -EINVAL;
3681
3682         tdls_dbg(sdata, "TDLS oper %d peer %pM\n", oper, peer);
3683
3684         switch (oper) {
3685         case NL80211_TDLS_ENABLE_LINK:
3686                 rcu_read_lock();
3687                 sta = sta_info_get(sdata, peer);
3688                 if (!sta) {
3689                         rcu_read_unlock();
3690                         return -ENOLINK;
3691                 }
3692
3693                 set_sta_flag(sta, WLAN_STA_TDLS_PEER_AUTH);
3694                 rcu_read_unlock();
3695                 break;
3696         case NL80211_TDLS_DISABLE_LINK:
3697                 return sta_info_destroy_addr(sdata, peer);
3698         case NL80211_TDLS_TEARDOWN:
3699         case NL80211_TDLS_SETUP:
3700         case NL80211_TDLS_DISCOVERY_REQ:
3701                 /* We don't support in-driver setup/teardown/discovery */
3702                 return -ENOTSUPP;
3703         default:
3704                 return -ENOTSUPP;
3705         }
3706
3707         return 0;
3708 }
3709
3710 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
3711                                   const u8 *peer, u64 *cookie)
3712 {
3713         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3714         struct ieee80211_local *local = sdata->local;
3715         struct ieee80211_qos_hdr *nullfunc;
3716         struct sk_buff *skb;
3717         int size = sizeof(*nullfunc);
3718         __le16 fc;
3719         bool qos;
3720         struct ieee80211_tx_info *info;
3721         struct sta_info *sta;
3722         struct ieee80211_chanctx_conf *chanctx_conf;
3723         enum ieee80211_band band;
3724
3725         rcu_read_lock();
3726         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3727         if (WARN_ON(!chanctx_conf)) {
3728                 rcu_read_unlock();
3729                 return -EINVAL;
3730         }
3731         band = chanctx_conf->def.chan->band;
3732         sta = sta_info_get_bss(sdata, peer);
3733         if (sta) {
3734                 qos = test_sta_flag(sta, WLAN_STA_WME);
3735         } else {
3736                 rcu_read_unlock();
3737                 return -ENOLINK;
3738         }
3739
3740         if (qos) {
3741                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3742                                  IEEE80211_STYPE_QOS_NULLFUNC |
3743                                  IEEE80211_FCTL_FROMDS);
3744         } else {
3745                 size -= 2;
3746                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3747                                  IEEE80211_STYPE_NULLFUNC |
3748                                  IEEE80211_FCTL_FROMDS);
3749         }
3750
3751         skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
3752         if (!skb) {
3753                 rcu_read_unlock();
3754                 return -ENOMEM;
3755         }
3756
3757         skb->dev = dev;
3758
3759         skb_reserve(skb, local->hw.extra_tx_headroom);
3760
3761         nullfunc = (void *) skb_put(skb, size);
3762         nullfunc->frame_control = fc;
3763         nullfunc->duration_id = 0;
3764         memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
3765         memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
3766         memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
3767         nullfunc->seq_ctrl = 0;
3768
3769         info = IEEE80211_SKB_CB(skb);
3770
3771         info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
3772                        IEEE80211_TX_INTFL_NL80211_FRAME_TX;
3773
3774         skb_set_queue_mapping(skb, IEEE80211_AC_VO);
3775         skb->priority = 7;
3776         if (qos)
3777                 nullfunc->qos_ctrl = cpu_to_le16(7);
3778
3779         local_bh_disable();
3780         ieee80211_xmit(sdata, skb, band);
3781         local_bh_enable();
3782         rcu_read_unlock();
3783
3784         *cookie = (unsigned long) skb;
3785         return 0;
3786 }
3787
3788 static int ieee80211_cfg_get_channel(struct wiphy *wiphy,
3789                                      struct wireless_dev *wdev,
3790                                      struct cfg80211_chan_def *chandef)
3791 {
3792         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3793         struct ieee80211_local *local = wiphy_priv(wiphy);
3794         struct ieee80211_chanctx_conf *chanctx_conf;
3795         int ret = -ENODATA;
3796
3797         rcu_read_lock();
3798         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3799         if (chanctx_conf) {
3800                 *chandef = chanctx_conf->def;
3801                 ret = 0;
3802         } else if (local->open_count > 0 &&
3803                    local->open_count == local->monitors &&
3804                    sdata->vif.type == NL80211_IFTYPE_MONITOR) {
3805                 if (local->use_chanctx)
3806                         *chandef = local->monitor_chandef;
3807                 else
3808                         *chandef = local->_oper_chandef;
3809                 ret = 0;
3810         }
3811         rcu_read_unlock();
3812
3813         return ret;
3814 }
3815
3816 #ifdef CONFIG_PM
3817 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
3818 {
3819         drv_set_wakeup(wiphy_priv(wiphy), enabled);
3820 }
3821 #endif
3822
3823 struct cfg80211_ops mac80211_config_ops = {
3824         .add_virtual_intf = ieee80211_add_iface,
3825         .del_virtual_intf = ieee80211_del_iface,
3826         .change_virtual_intf = ieee80211_change_iface,
3827         .start_p2p_device = ieee80211_start_p2p_device,
3828         .stop_p2p_device = ieee80211_stop_p2p_device,
3829         .add_key = ieee80211_add_key,
3830         .del_key = ieee80211_del_key,
3831         .get_key = ieee80211_get_key,
3832         .set_default_key = ieee80211_config_default_key,
3833         .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
3834         .start_ap = ieee80211_start_ap,
3835         .change_beacon = ieee80211_change_beacon,
3836         .stop_ap = ieee80211_stop_ap,
3837         .add_station = ieee80211_add_station,
3838         .del_station = ieee80211_del_station,
3839         .change_station = ieee80211_change_station,
3840         .get_station = ieee80211_get_station,
3841         .dump_station = ieee80211_dump_station,
3842         .dump_survey = ieee80211_dump_survey,
3843 #ifdef CONFIG_MAC80211_MESH
3844         .add_mpath = ieee80211_add_mpath,
3845         .del_mpath = ieee80211_del_mpath,
3846         .change_mpath = ieee80211_change_mpath,
3847         .get_mpath = ieee80211_get_mpath,
3848         .dump_mpath = ieee80211_dump_mpath,
3849         .update_mesh_config = ieee80211_update_mesh_config,
3850         .get_mesh_config = ieee80211_get_mesh_config,
3851         .join_mesh = ieee80211_join_mesh,
3852         .leave_mesh = ieee80211_leave_mesh,
3853 #endif
3854         .change_bss = ieee80211_change_bss,
3855         .set_txq_params = ieee80211_set_txq_params,
3856         .set_monitor_channel = ieee80211_set_monitor_channel,
3857         .suspend = ieee80211_suspend,
3858         .resume = ieee80211_resume,
3859         .scan = ieee80211_scan,
3860         .sched_scan_start = ieee80211_sched_scan_start,
3861         .sched_scan_stop = ieee80211_sched_scan_stop,
3862         .auth = ieee80211_auth,
3863         .assoc = ieee80211_assoc,
3864         .deauth = ieee80211_deauth,
3865         .disassoc = ieee80211_disassoc,
3866         .join_ibss = ieee80211_join_ibss,
3867         .leave_ibss = ieee80211_leave_ibss,
3868         .set_mcast_rate = ieee80211_set_mcast_rate,
3869         .set_wiphy_params = ieee80211_set_wiphy_params,
3870         .set_tx_power = ieee80211_set_tx_power,
3871         .get_tx_power = ieee80211_get_tx_power,
3872         .set_wds_peer = ieee80211_set_wds_peer,
3873         .rfkill_poll = ieee80211_rfkill_poll,
3874         CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
3875         CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
3876         .set_power_mgmt = ieee80211_set_power_mgmt,
3877         .set_bitrate_mask = ieee80211_set_bitrate_mask,
3878         .remain_on_channel = ieee80211_remain_on_channel,
3879         .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
3880         .mgmt_tx = ieee80211_mgmt_tx,
3881         .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
3882         .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
3883         .mgmt_frame_register = ieee80211_mgmt_frame_register,
3884         .set_antenna = ieee80211_set_antenna,
3885         .get_antenna = ieee80211_get_antenna,
3886         .set_ringparam = ieee80211_set_ringparam,
3887         .get_ringparam = ieee80211_get_ringparam,
3888         .set_rekey_data = ieee80211_set_rekey_data,
3889         .tdls_oper = ieee80211_tdls_oper,
3890         .tdls_mgmt = ieee80211_tdls_mgmt,
3891         .probe_client = ieee80211_probe_client,
3892         .set_noack_map = ieee80211_set_noack_map,
3893 #ifdef CONFIG_PM
3894         .set_wakeup = ieee80211_set_wakeup,
3895 #endif
3896         .get_et_sset_count = ieee80211_get_et_sset_count,
3897         .get_et_stats = ieee80211_get_et_stats,
3898         .get_et_strings = ieee80211_get_et_strings,
3899         .get_channel = ieee80211_cfg_get_channel,
3900         .start_radar_detection = ieee80211_start_radar_detection,
3901         .channel_switch = ieee80211_channel_switch,
3902 };