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 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         cancel_work_sync(&sdata->csa_finalize_work);
1084         cancel_work_sync(&sdata->u.ap.request_smps_work);
1085
1086         /* turn off carrier for this interface and dependent VLANs */
1087         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1088                 netif_carrier_off(vlan->dev);
1089         netif_carrier_off(dev);
1090
1091         /* remove beacon and probe response */
1092         RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
1093         RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL);
1094         kfree_rcu(old_beacon, rcu_head);
1095         if (old_probe_resp)
1096                 kfree_rcu(old_probe_resp, rcu_head);
1097
1098         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1099                 sta_info_flush_defer(vlan);
1100         sta_info_flush_defer(sdata);
1101         synchronize_net();
1102         rcu_barrier();
1103         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
1104                 sta_info_flush_cleanup(vlan);
1105                 ieee80211_free_keys(vlan);
1106         }
1107         sta_info_flush_cleanup(sdata);
1108         ieee80211_free_keys(sdata);
1109
1110         sdata->vif.bss_conf.enable_beacon = false;
1111         sdata->vif.bss_conf.ssid_len = 0;
1112         clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state);
1113         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
1114
1115         if (sdata->wdev.cac_started) {
1116                 chandef = sdata->vif.bss_conf.chandef;
1117                 cancel_delayed_work_sync(&sdata->dfs_cac_timer_work);
1118                 cfg80211_cac_event(sdata->dev, &chandef,
1119                                    NL80211_RADAR_CAC_ABORTED,
1120                                    GFP_KERNEL);
1121         }
1122
1123         drv_stop_ap(sdata->local, sdata);
1124
1125         /* free all potentially still buffered bcast frames */
1126         local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf);
1127         skb_queue_purge(&sdata->u.ap.ps.bc_buf);
1128
1129         ieee80211_vif_copy_chanctx_to_vlans(sdata, true);
1130         ieee80211_vif_release_channel(sdata);
1131
1132         return 0;
1133 }
1134
1135 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
1136 struct iapp_layer2_update {
1137         u8 da[ETH_ALEN];        /* broadcast */
1138         u8 sa[ETH_ALEN];        /* STA addr */
1139         __be16 len;             /* 6 */
1140         u8 dsap;                /* 0 */
1141         u8 ssap;                /* 0 */
1142         u8 control;
1143         u8 xid_info[3];
1144 } __packed;
1145
1146 static void ieee80211_send_layer2_update(struct sta_info *sta)
1147 {
1148         struct iapp_layer2_update *msg;
1149         struct sk_buff *skb;
1150
1151         /* Send Level 2 Update Frame to update forwarding tables in layer 2
1152          * bridge devices */
1153
1154         skb = dev_alloc_skb(sizeof(*msg));
1155         if (!skb)
1156                 return;
1157         msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
1158
1159         /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
1160          * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
1161
1162         eth_broadcast_addr(msg->da);
1163         memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
1164         msg->len = htons(6);
1165         msg->dsap = 0;
1166         msg->ssap = 0x01;       /* NULL LSAP, CR Bit: Response */
1167         msg->control = 0xaf;    /* XID response lsb.1111F101.
1168                                  * F=0 (no poll command; unsolicited frame) */
1169         msg->xid_info[0] = 0x81;        /* XID format identifier */
1170         msg->xid_info[1] = 1;   /* LLC types/classes: Type 1 LLC */
1171         msg->xid_info[2] = 0;   /* XID sender's receive window size (RW) */
1172
1173         skb->dev = sta->sdata->dev;
1174         skb->protocol = eth_type_trans(skb, sta->sdata->dev);
1175         memset(skb->cb, 0, sizeof(skb->cb));
1176         netif_rx_ni(skb);
1177 }
1178
1179 static int sta_apply_auth_flags(struct ieee80211_local *local,
1180                                 struct sta_info *sta,
1181                                 u32 mask, u32 set)
1182 {
1183         int ret;
1184
1185         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1186             set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1187             !test_sta_flag(sta, WLAN_STA_AUTH)) {
1188                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1189                 if (ret)
1190                         return ret;
1191         }
1192
1193         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1194             set & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1195             !test_sta_flag(sta, WLAN_STA_ASSOC)) {
1196                 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1197                 if (ret)
1198                         return ret;
1199         }
1200
1201         if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1202                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
1203                         ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
1204                 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1205                         ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1206                 else
1207                         ret = 0;
1208                 if (ret)
1209                         return ret;
1210         }
1211
1212         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1213             !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
1214             test_sta_flag(sta, WLAN_STA_ASSOC)) {
1215                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1216                 if (ret)
1217                         return ret;
1218         }
1219
1220         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1221             !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
1222             test_sta_flag(sta, WLAN_STA_AUTH)) {
1223                 ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
1224                 if (ret)
1225                         return ret;
1226         }
1227
1228         return 0;
1229 }
1230
1231 static int sta_apply_parameters(struct ieee80211_local *local,
1232                                 struct sta_info *sta,
1233                                 struct station_parameters *params)
1234 {
1235         int ret = 0;
1236         struct ieee80211_supported_band *sband;
1237         struct ieee80211_sub_if_data *sdata = sta->sdata;
1238         enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
1239         u32 mask, set;
1240
1241         sband = local->hw.wiphy->bands[band];
1242
1243         mask = params->sta_flags_mask;
1244         set = params->sta_flags_set;
1245
1246         if (ieee80211_vif_is_mesh(&sdata->vif)) {
1247                 /*
1248                  * In mesh mode, ASSOCIATED isn't part of the nl80211
1249                  * API but must follow AUTHENTICATED for driver state.
1250                  */
1251                 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1252                         mask |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1253                 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1254                         set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1255         } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1256                 /*
1257                  * TDLS -- everything follows authorized, but
1258                  * only becoming authorized is possible, not
1259                  * going back
1260                  */
1261                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1262                         set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1263                                BIT(NL80211_STA_FLAG_ASSOCIATED);
1264                         mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1265                                 BIT(NL80211_STA_FLAG_ASSOCIATED);
1266                 }
1267         }
1268
1269         ret = sta_apply_auth_flags(local, sta, mask, set);
1270         if (ret)
1271                 return ret;
1272
1273         if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
1274                 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
1275                         set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1276                 else
1277                         clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1278         }
1279
1280         if (mask & BIT(NL80211_STA_FLAG_WME)) {
1281                 if (set & BIT(NL80211_STA_FLAG_WME)) {
1282                         set_sta_flag(sta, WLAN_STA_WME);
1283                         sta->sta.wme = true;
1284                 } else {
1285                         clear_sta_flag(sta, WLAN_STA_WME);
1286                         sta->sta.wme = false;
1287                 }
1288         }
1289
1290         if (mask & BIT(NL80211_STA_FLAG_MFP)) {
1291                 if (set & BIT(NL80211_STA_FLAG_MFP))
1292                         set_sta_flag(sta, WLAN_STA_MFP);
1293                 else
1294                         clear_sta_flag(sta, WLAN_STA_MFP);
1295         }
1296
1297         if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
1298                 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1299                         set_sta_flag(sta, WLAN_STA_TDLS_PEER);
1300                 else
1301                         clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1302         }
1303
1304         if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
1305                 sta->sta.uapsd_queues = params->uapsd_queues;
1306                 sta->sta.max_sp = params->max_sp;
1307         }
1308
1309         /*
1310          * cfg80211 validates this (1-2007) and allows setting the AID
1311          * only when creating a new station entry
1312          */
1313         if (params->aid)
1314                 sta->sta.aid = params->aid;
1315
1316         /*
1317          * Some of the following updates would be racy if called on an
1318          * existing station, via ieee80211_change_station(). However,
1319          * all such changes are rejected by cfg80211 except for updates
1320          * changing the supported rates on an existing but not yet used
1321          * TDLS peer.
1322          */
1323
1324         if (params->listen_interval >= 0)
1325                 sta->listen_interval = params->listen_interval;
1326
1327         if (params->supported_rates) {
1328                 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1329                                          sband, params->supported_rates,
1330                                          params->supported_rates_len,
1331                                          &sta->sta.supp_rates[band]);
1332         }
1333
1334         if (params->ht_capa)
1335                 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1336                                                   params->ht_capa, sta);
1337
1338         if (params->vht_capa)
1339                 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
1340                                                     params->vht_capa, sta);
1341
1342         if (ieee80211_vif_is_mesh(&sdata->vif)) {
1343 #ifdef CONFIG_MAC80211_MESH
1344                 u32 changed = 0;
1345
1346                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) {
1347                         switch (params->plink_state) {
1348                         case NL80211_PLINK_ESTAB:
1349                                 if (sta->plink_state != NL80211_PLINK_ESTAB)
1350                                         changed = mesh_plink_inc_estab_count(
1351                                                         sdata);
1352                                 sta->plink_state = params->plink_state;
1353
1354                                 ieee80211_mps_sta_status_update(sta);
1355                                 changed |= ieee80211_mps_set_sta_local_pm(sta,
1356                                               sdata->u.mesh.mshcfg.power_mode);
1357                                 break;
1358                         case NL80211_PLINK_LISTEN:
1359                         case NL80211_PLINK_BLOCKED:
1360                         case NL80211_PLINK_OPN_SNT:
1361                         case NL80211_PLINK_OPN_RCVD:
1362                         case NL80211_PLINK_CNF_RCVD:
1363                         case NL80211_PLINK_HOLDING:
1364                                 if (sta->plink_state == NL80211_PLINK_ESTAB)
1365                                         changed = mesh_plink_dec_estab_count(
1366                                                         sdata);
1367                                 sta->plink_state = params->plink_state;
1368
1369                                 ieee80211_mps_sta_status_update(sta);
1370                                 changed |= ieee80211_mps_set_sta_local_pm(sta,
1371                                                 NL80211_MESH_POWER_UNKNOWN);
1372                                 break;
1373                         default:
1374                                 /*  nothing  */
1375                                 break;
1376                         }
1377                 }
1378
1379                 switch (params->plink_action) {
1380                 case NL80211_PLINK_ACTION_NO_ACTION:
1381                         /* nothing */
1382                         break;
1383                 case NL80211_PLINK_ACTION_OPEN:
1384                         changed |= mesh_plink_open(sta);
1385                         break;
1386                 case NL80211_PLINK_ACTION_BLOCK:
1387                         changed |= mesh_plink_block(sta);
1388                         break;
1389                 }
1390
1391                 if (params->local_pm)
1392                         changed |=
1393                               ieee80211_mps_set_sta_local_pm(sta,
1394                                                              params->local_pm);
1395                 ieee80211_bss_info_change_notify(sdata, changed);
1396 #endif
1397         }
1398
1399         return 0;
1400 }
1401
1402 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1403                                  u8 *mac, struct station_parameters *params)
1404 {
1405         struct ieee80211_local *local = wiphy_priv(wiphy);
1406         struct sta_info *sta;
1407         struct ieee80211_sub_if_data *sdata;
1408         int err;
1409         int layer2_update;
1410
1411         if (params->vlan) {
1412                 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1413
1414                 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1415                     sdata->vif.type != NL80211_IFTYPE_AP)
1416                         return -EINVAL;
1417         } else
1418                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1419
1420         if (ether_addr_equal(mac, sdata->vif.addr))
1421                 return -EINVAL;
1422
1423         if (is_multicast_ether_addr(mac))
1424                 return -EINVAL;
1425
1426         sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
1427         if (!sta)
1428                 return -ENOMEM;
1429
1430         /*
1431          * defaults -- if userspace wants something else we'll
1432          * change it accordingly in sta_apply_parameters()
1433          */
1434         if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) {
1435                 sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
1436                 sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC);
1437         }
1438
1439         err = sta_apply_parameters(local, sta, params);
1440         if (err) {
1441                 sta_info_free(local, sta);
1442                 return err;
1443         }
1444
1445         /*
1446          * for TDLS, rate control should be initialized only when
1447          * rates are known and station is marked authorized
1448          */
1449         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER))
1450                 rate_control_rate_init(sta);
1451
1452         layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
1453                 sdata->vif.type == NL80211_IFTYPE_AP;
1454
1455         err = sta_info_insert_rcu(sta);
1456         if (err) {
1457                 rcu_read_unlock();
1458                 return err;
1459         }
1460
1461         if (layer2_update)
1462                 ieee80211_send_layer2_update(sta);
1463
1464         rcu_read_unlock();
1465
1466         return 0;
1467 }
1468
1469 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1470                                  u8 *mac)
1471 {
1472         struct ieee80211_sub_if_data *sdata;
1473
1474         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1475
1476         if (mac)
1477                 return sta_info_destroy_addr_bss(sdata, mac);
1478
1479         sta_info_flush(sdata);
1480         return 0;
1481 }
1482
1483 static int ieee80211_change_station(struct wiphy *wiphy,
1484                                     struct net_device *dev, u8 *mac,
1485                                     struct station_parameters *params)
1486 {
1487         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1488         struct ieee80211_local *local = wiphy_priv(wiphy);
1489         struct sta_info *sta;
1490         struct ieee80211_sub_if_data *vlansdata;
1491         enum cfg80211_station_type statype;
1492         int err;
1493
1494         mutex_lock(&local->sta_mtx);
1495
1496         sta = sta_info_get_bss(sdata, mac);
1497         if (!sta) {
1498                 err = -ENOENT;
1499                 goto out_err;
1500         }
1501
1502         switch (sdata->vif.type) {
1503         case NL80211_IFTYPE_MESH_POINT:
1504                 if (sdata->u.mesh.user_mpm)
1505                         statype = CFG80211_STA_MESH_PEER_USER;
1506                 else
1507                         statype = CFG80211_STA_MESH_PEER_KERNEL;
1508                 break;
1509         case NL80211_IFTYPE_ADHOC:
1510                 statype = CFG80211_STA_IBSS;
1511                 break;
1512         case NL80211_IFTYPE_STATION:
1513                 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1514                         statype = CFG80211_STA_AP_STA;
1515                         break;
1516                 }
1517                 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1518                         statype = CFG80211_STA_TDLS_PEER_ACTIVE;
1519                 else
1520                         statype = CFG80211_STA_TDLS_PEER_SETUP;
1521                 break;
1522         case NL80211_IFTYPE_AP:
1523         case NL80211_IFTYPE_AP_VLAN:
1524                 statype = CFG80211_STA_AP_CLIENT;
1525                 break;
1526         default:
1527                 err = -EOPNOTSUPP;
1528                 goto out_err;
1529         }
1530
1531         err = cfg80211_check_station_change(wiphy, params, statype);
1532         if (err)
1533                 goto out_err;
1534
1535         if (params->vlan && params->vlan != sta->sdata->dev) {
1536                 bool prev_4addr = false;
1537                 bool new_4addr = false;
1538
1539                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1540
1541                 if (params->vlan->ieee80211_ptr->use_4addr) {
1542                         if (vlansdata->u.vlan.sta) {
1543                                 err = -EBUSY;
1544                                 goto out_err;
1545                         }
1546
1547                         rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1548                         new_4addr = true;
1549                 }
1550
1551                 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
1552                     sta->sdata->u.vlan.sta) {
1553                         rcu_assign_pointer(sta->sdata->u.vlan.sta, NULL);
1554                         prev_4addr = true;
1555                 }
1556
1557                 sta->sdata = vlansdata;
1558
1559                 if (sta->sta_state == IEEE80211_STA_AUTHORIZED &&
1560                     prev_4addr != new_4addr) {
1561                         if (new_4addr)
1562                                 atomic_dec(&sta->sdata->bss->num_mcast_sta);
1563                         else
1564                                 atomic_inc(&sta->sdata->bss->num_mcast_sta);
1565                 }
1566
1567                 ieee80211_send_layer2_update(sta);
1568         }
1569
1570         err = sta_apply_parameters(local, sta, params);
1571         if (err)
1572                 goto out_err;
1573
1574         /* When peer becomes authorized, init rate control as well */
1575         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1576             test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1577                 rate_control_rate_init(sta);
1578
1579         mutex_unlock(&local->sta_mtx);
1580
1581         if ((sdata->vif.type == NL80211_IFTYPE_AP ||
1582              sdata->vif.type == NL80211_IFTYPE_AP_VLAN) &&
1583             sta->known_smps_mode != sta->sdata->bss->req_smps &&
1584             test_sta_flag(sta, WLAN_STA_AUTHORIZED) &&
1585             sta_info_tx_streams(sta) != 1) {
1586                 ht_dbg(sta->sdata,
1587                        "%pM just authorized and MIMO capable - update SMPS\n",
1588                        sta->sta.addr);
1589                 ieee80211_send_smps_action(sta->sdata,
1590                         sta->sdata->bss->req_smps,
1591                         sta->sta.addr,
1592                         sta->sdata->vif.bss_conf.bssid);
1593         }
1594
1595         if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1596             params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1597                 ieee80211_recalc_ps(local, -1);
1598                 ieee80211_recalc_ps_vif(sdata);
1599         }
1600
1601         return 0;
1602 out_err:
1603         mutex_unlock(&local->sta_mtx);
1604         return err;
1605 }
1606
1607 #ifdef CONFIG_MAC80211_MESH
1608 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1609                                  u8 *dst, u8 *next_hop)
1610 {
1611         struct ieee80211_sub_if_data *sdata;
1612         struct mesh_path *mpath;
1613         struct sta_info *sta;
1614
1615         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1616
1617         rcu_read_lock();
1618         sta = sta_info_get(sdata, next_hop);
1619         if (!sta) {
1620                 rcu_read_unlock();
1621                 return -ENOENT;
1622         }
1623
1624         mpath = mesh_path_add(sdata, dst);
1625         if (IS_ERR(mpath)) {
1626                 rcu_read_unlock();
1627                 return PTR_ERR(mpath);
1628         }
1629
1630         mesh_path_fix_nexthop(mpath, sta);
1631
1632         rcu_read_unlock();
1633         return 0;
1634 }
1635
1636 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1637                                u8 *dst)
1638 {
1639         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1640
1641         if (dst)
1642                 return mesh_path_del(sdata, dst);
1643
1644         mesh_path_flush_by_iface(sdata);
1645         return 0;
1646 }
1647
1648 static int ieee80211_change_mpath(struct wiphy *wiphy,
1649                                     struct net_device *dev,
1650                                     u8 *dst, u8 *next_hop)
1651 {
1652         struct ieee80211_sub_if_data *sdata;
1653         struct mesh_path *mpath;
1654         struct sta_info *sta;
1655
1656         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1657
1658         rcu_read_lock();
1659
1660         sta = sta_info_get(sdata, next_hop);
1661         if (!sta) {
1662                 rcu_read_unlock();
1663                 return -ENOENT;
1664         }
1665
1666         mpath = mesh_path_lookup(sdata, dst);
1667         if (!mpath) {
1668                 rcu_read_unlock();
1669                 return -ENOENT;
1670         }
1671
1672         mesh_path_fix_nexthop(mpath, sta);
1673
1674         rcu_read_unlock();
1675         return 0;
1676 }
1677
1678 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1679                             struct mpath_info *pinfo)
1680 {
1681         struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1682
1683         if (next_hop_sta)
1684                 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1685         else
1686                 memset(next_hop, 0, ETH_ALEN);
1687
1688         memset(pinfo, 0, sizeof(*pinfo));
1689
1690         pinfo->generation = mesh_paths_generation;
1691
1692         pinfo->filled = MPATH_INFO_FRAME_QLEN |
1693                         MPATH_INFO_SN |
1694                         MPATH_INFO_METRIC |
1695                         MPATH_INFO_EXPTIME |
1696                         MPATH_INFO_DISCOVERY_TIMEOUT |
1697                         MPATH_INFO_DISCOVERY_RETRIES |
1698                         MPATH_INFO_FLAGS;
1699
1700         pinfo->frame_qlen = mpath->frame_queue.qlen;
1701         pinfo->sn = mpath->sn;
1702         pinfo->metric = mpath->metric;
1703         if (time_before(jiffies, mpath->exp_time))
1704                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1705         pinfo->discovery_timeout =
1706                         jiffies_to_msecs(mpath->discovery_timeout);
1707         pinfo->discovery_retries = mpath->discovery_retries;
1708         if (mpath->flags & MESH_PATH_ACTIVE)
1709                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1710         if (mpath->flags & MESH_PATH_RESOLVING)
1711                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1712         if (mpath->flags & MESH_PATH_SN_VALID)
1713                 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1714         if (mpath->flags & MESH_PATH_FIXED)
1715                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1716         if (mpath->flags & MESH_PATH_RESOLVED)
1717                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
1718 }
1719
1720 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1721                                u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1722
1723 {
1724         struct ieee80211_sub_if_data *sdata;
1725         struct mesh_path *mpath;
1726
1727         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1728
1729         rcu_read_lock();
1730         mpath = mesh_path_lookup(sdata, dst);
1731         if (!mpath) {
1732                 rcu_read_unlock();
1733                 return -ENOENT;
1734         }
1735         memcpy(dst, mpath->dst, ETH_ALEN);
1736         mpath_set_pinfo(mpath, next_hop, pinfo);
1737         rcu_read_unlock();
1738         return 0;
1739 }
1740
1741 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1742                                  int idx, u8 *dst, u8 *next_hop,
1743                                  struct mpath_info *pinfo)
1744 {
1745         struct ieee80211_sub_if_data *sdata;
1746         struct mesh_path *mpath;
1747
1748         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1749
1750         rcu_read_lock();
1751         mpath = mesh_path_lookup_by_idx(sdata, idx);
1752         if (!mpath) {
1753                 rcu_read_unlock();
1754                 return -ENOENT;
1755         }
1756         memcpy(dst, mpath->dst, ETH_ALEN);
1757         mpath_set_pinfo(mpath, next_hop, pinfo);
1758         rcu_read_unlock();
1759         return 0;
1760 }
1761
1762 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1763                                 struct net_device *dev,
1764                                 struct mesh_config *conf)
1765 {
1766         struct ieee80211_sub_if_data *sdata;
1767         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1768
1769         memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1770         return 0;
1771 }
1772
1773 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1774 {
1775         return (mask >> (parm-1)) & 0x1;
1776 }
1777
1778 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1779                 const struct mesh_setup *setup)
1780 {
1781         u8 *new_ie;
1782         const u8 *old_ie;
1783         struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1784                                         struct ieee80211_sub_if_data, u.mesh);
1785
1786         /* allocate information elements */
1787         new_ie = NULL;
1788         old_ie = ifmsh->ie;
1789
1790         if (setup->ie_len) {
1791                 new_ie = kmemdup(setup->ie, setup->ie_len,
1792                                 GFP_KERNEL);
1793                 if (!new_ie)
1794                         return -ENOMEM;
1795         }
1796         ifmsh->ie_len = setup->ie_len;
1797         ifmsh->ie = new_ie;
1798         kfree(old_ie);
1799
1800         /* now copy the rest of the setup parameters */
1801         ifmsh->mesh_id_len = setup->mesh_id_len;
1802         memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1803         ifmsh->mesh_sp_id = setup->sync_method;
1804         ifmsh->mesh_pp_id = setup->path_sel_proto;
1805         ifmsh->mesh_pm_id = setup->path_metric;
1806         ifmsh->user_mpm = setup->user_mpm;
1807         ifmsh->mesh_auth_id = setup->auth_id;
1808         ifmsh->security = IEEE80211_MESH_SEC_NONE;
1809         if (setup->is_authenticated)
1810                 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1811         if (setup->is_secure)
1812                 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1813
1814         /* mcast rate setting in Mesh Node */
1815         memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1816                                                 sizeof(setup->mcast_rate));
1817         sdata->vif.bss_conf.basic_rates = setup->basic_rates;
1818
1819         sdata->vif.bss_conf.beacon_int = setup->beacon_interval;
1820         sdata->vif.bss_conf.dtim_period = setup->dtim_period;
1821
1822         return 0;
1823 }
1824
1825 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1826                                         struct net_device *dev, u32 mask,
1827                                         const struct mesh_config *nconf)
1828 {
1829         struct mesh_config *conf;
1830         struct ieee80211_sub_if_data *sdata;
1831         struct ieee80211_if_mesh *ifmsh;
1832
1833         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1834         ifmsh = &sdata->u.mesh;
1835
1836         /* Set the config options which we are interested in setting */
1837         conf = &(sdata->u.mesh.mshcfg);
1838         if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1839                 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1840         if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1841                 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1842         if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1843                 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1844         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1845                 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1846         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1847                 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1848         if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1849                 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1850         if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1851                 conf->element_ttl = nconf->element_ttl;
1852         if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) {
1853                 if (ifmsh->user_mpm)
1854                         return -EBUSY;
1855                 conf->auto_open_plinks = nconf->auto_open_plinks;
1856         }
1857         if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
1858                 conf->dot11MeshNbrOffsetMaxNeighbor =
1859                         nconf->dot11MeshNbrOffsetMaxNeighbor;
1860         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1861                 conf->dot11MeshHWMPmaxPREQretries =
1862                         nconf->dot11MeshHWMPmaxPREQretries;
1863         if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1864                 conf->path_refresh_time = nconf->path_refresh_time;
1865         if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1866                 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1867         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1868                 conf->dot11MeshHWMPactivePathTimeout =
1869                         nconf->dot11MeshHWMPactivePathTimeout;
1870         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1871                 conf->dot11MeshHWMPpreqMinInterval =
1872                         nconf->dot11MeshHWMPpreqMinInterval;
1873         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1874                 conf->dot11MeshHWMPperrMinInterval =
1875                         nconf->dot11MeshHWMPperrMinInterval;
1876         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1877                            mask))
1878                 conf->dot11MeshHWMPnetDiameterTraversalTime =
1879                         nconf->dot11MeshHWMPnetDiameterTraversalTime;
1880         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1881                 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1882                 ieee80211_mesh_root_setup(ifmsh);
1883         }
1884         if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1885                 /* our current gate announcement implementation rides on root
1886                  * announcements, so require this ifmsh to also be a root node
1887                  * */
1888                 if (nconf->dot11MeshGateAnnouncementProtocol &&
1889                     !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
1890                         conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
1891                         ieee80211_mesh_root_setup(ifmsh);
1892                 }
1893                 conf->dot11MeshGateAnnouncementProtocol =
1894                         nconf->dot11MeshGateAnnouncementProtocol;
1895         }
1896         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
1897                 conf->dot11MeshHWMPRannInterval =
1898                         nconf->dot11MeshHWMPRannInterval;
1899         if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
1900                 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1901         if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
1902                 /* our RSSI threshold implementation is supported only for
1903                  * devices that report signal in dBm.
1904                  */
1905                 if (!(sdata->local->hw.flags & IEEE80211_HW_SIGNAL_DBM))
1906                         return -ENOTSUPP;
1907                 conf->rssi_threshold = nconf->rssi_threshold;
1908         }
1909         if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
1910                 conf->ht_opmode = nconf->ht_opmode;
1911                 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
1912                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1913         }
1914         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
1915                 conf->dot11MeshHWMPactivePathToRootTimeout =
1916                         nconf->dot11MeshHWMPactivePathToRootTimeout;
1917         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
1918                 conf->dot11MeshHWMProotInterval =
1919                         nconf->dot11MeshHWMProotInterval;
1920         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
1921                 conf->dot11MeshHWMPconfirmationInterval =
1922                         nconf->dot11MeshHWMPconfirmationInterval;
1923         if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) {
1924                 conf->power_mode = nconf->power_mode;
1925                 ieee80211_mps_local_status_update(sdata);
1926         }
1927         if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask))
1928                 conf->dot11MeshAwakeWindowDuration =
1929                         nconf->dot11MeshAwakeWindowDuration;
1930         if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask))
1931                 conf->plink_timeout = nconf->plink_timeout;
1932         ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON);
1933         return 0;
1934 }
1935
1936 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1937                                const struct mesh_config *conf,
1938                                const struct mesh_setup *setup)
1939 {
1940         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1941         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1942         int err;
1943
1944         memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1945         err = copy_mesh_setup(ifmsh, setup);
1946         if (err)
1947                 return err;
1948
1949         /* can mesh use other SMPS modes? */
1950         sdata->smps_mode = IEEE80211_SMPS_OFF;
1951         sdata->needed_rx_chains = sdata->local->rx_chains;
1952
1953         err = ieee80211_vif_use_channel(sdata, &setup->chandef,
1954                                         IEEE80211_CHANCTX_SHARED);
1955         if (err)
1956                 return err;
1957
1958         return ieee80211_start_mesh(sdata);
1959 }
1960
1961 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1962 {
1963         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1964
1965         ieee80211_stop_mesh(sdata);
1966         ieee80211_vif_release_channel(sdata);
1967
1968         return 0;
1969 }
1970 #endif
1971
1972 static int ieee80211_change_bss(struct wiphy *wiphy,
1973                                 struct net_device *dev,
1974                                 struct bss_parameters *params)
1975 {
1976         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1977         enum ieee80211_band band;
1978         u32 changed = 0;
1979
1980         if (!sdata_dereference(sdata->u.ap.beacon, sdata))
1981                 return -ENOENT;
1982
1983         band = ieee80211_get_sdata_band(sdata);
1984
1985         if (params->use_cts_prot >= 0) {
1986                 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1987                 changed |= BSS_CHANGED_ERP_CTS_PROT;
1988         }
1989         if (params->use_short_preamble >= 0) {
1990                 sdata->vif.bss_conf.use_short_preamble =
1991                         params->use_short_preamble;
1992                 changed |= BSS_CHANGED_ERP_PREAMBLE;
1993         }
1994
1995         if (!sdata->vif.bss_conf.use_short_slot &&
1996             band == IEEE80211_BAND_5GHZ) {
1997                 sdata->vif.bss_conf.use_short_slot = true;
1998                 changed |= BSS_CHANGED_ERP_SLOT;
1999         }
2000
2001         if (params->use_short_slot_time >= 0) {
2002                 sdata->vif.bss_conf.use_short_slot =
2003                         params->use_short_slot_time;
2004                 changed |= BSS_CHANGED_ERP_SLOT;
2005         }
2006
2007         if (params->basic_rates) {
2008                 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
2009                                          wiphy->bands[band],
2010                                          params->basic_rates,
2011                                          params->basic_rates_len,
2012                                          &sdata->vif.bss_conf.basic_rates);
2013                 changed |= BSS_CHANGED_BASIC_RATES;
2014         }
2015
2016         if (params->ap_isolate >= 0) {
2017                 if (params->ap_isolate)
2018                         sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
2019                 else
2020                         sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
2021         }
2022
2023         if (params->ht_opmode >= 0) {
2024                 sdata->vif.bss_conf.ht_operation_mode =
2025                         (u16) params->ht_opmode;
2026                 changed |= BSS_CHANGED_HT;
2027         }
2028
2029         if (params->p2p_ctwindow >= 0) {
2030                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
2031                                         ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
2032                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
2033                         params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
2034                 changed |= BSS_CHANGED_P2P_PS;
2035         }
2036
2037         if (params->p2p_opp_ps > 0) {
2038                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
2039                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
2040                 changed |= BSS_CHANGED_P2P_PS;
2041         } else if (params->p2p_opp_ps == 0) {
2042                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
2043                                         ~IEEE80211_P2P_OPPPS_ENABLE_BIT;
2044                 changed |= BSS_CHANGED_P2P_PS;
2045         }
2046
2047         ieee80211_bss_info_change_notify(sdata, changed);
2048
2049         return 0;
2050 }
2051
2052 static int ieee80211_set_txq_params(struct wiphy *wiphy,
2053                                     struct net_device *dev,
2054                                     struct ieee80211_txq_params *params)
2055 {
2056         struct ieee80211_local *local = wiphy_priv(wiphy);
2057         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2058         struct ieee80211_tx_queue_params p;
2059
2060         if (!local->ops->conf_tx)
2061                 return -EOPNOTSUPP;
2062
2063         if (local->hw.queues < IEEE80211_NUM_ACS)
2064                 return -EOPNOTSUPP;
2065
2066         memset(&p, 0, sizeof(p));
2067         p.aifs = params->aifs;
2068         p.cw_max = params->cwmax;
2069         p.cw_min = params->cwmin;
2070         p.txop = params->txop;
2071
2072         /*
2073          * Setting tx queue params disables u-apsd because it's only
2074          * called in master mode.
2075          */
2076         p.uapsd = false;
2077
2078         sdata->tx_conf[params->ac] = p;
2079         if (drv_conf_tx(local, sdata, params->ac, &p)) {
2080                 wiphy_debug(local->hw.wiphy,
2081                             "failed to set TX queue parameters for AC %d\n",
2082                             params->ac);
2083                 return -EINVAL;
2084         }
2085
2086         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
2087
2088         return 0;
2089 }
2090
2091 #ifdef CONFIG_PM
2092 static int ieee80211_suspend(struct wiphy *wiphy,
2093                              struct cfg80211_wowlan *wowlan)
2094 {
2095         return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
2096 }
2097
2098 static int ieee80211_resume(struct wiphy *wiphy)
2099 {
2100         return __ieee80211_resume(wiphy_priv(wiphy));
2101 }
2102 #else
2103 #define ieee80211_suspend NULL
2104 #define ieee80211_resume NULL
2105 #endif
2106
2107 static int ieee80211_scan(struct wiphy *wiphy,
2108                           struct cfg80211_scan_request *req)
2109 {
2110         struct ieee80211_sub_if_data *sdata;
2111
2112         sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
2113
2114         switch (ieee80211_vif_type_p2p(&sdata->vif)) {
2115         case NL80211_IFTYPE_STATION:
2116         case NL80211_IFTYPE_ADHOC:
2117         case NL80211_IFTYPE_MESH_POINT:
2118         case NL80211_IFTYPE_P2P_CLIENT:
2119         case NL80211_IFTYPE_P2P_DEVICE:
2120                 break;
2121         case NL80211_IFTYPE_P2P_GO:
2122                 if (sdata->local->ops->hw_scan)
2123                         break;
2124                 /*
2125                  * FIXME: implement NoA while scanning in software,
2126                  * for now fall through to allow scanning only when
2127                  * beaconing hasn't been configured yet
2128                  */
2129         case NL80211_IFTYPE_AP:
2130                 /*
2131                  * If the scan has been forced (and the driver supports
2132                  * forcing), don't care about being beaconing already.
2133                  * This will create problems to the attached stations (e.g. all
2134                  * the  frames sent while scanning on other channel will be
2135                  * lost)
2136                  */
2137                 if (sdata->u.ap.beacon &&
2138                     (!(wiphy->features & NL80211_FEATURE_AP_SCAN) ||
2139                      !(req->flags & NL80211_SCAN_FLAG_AP)))
2140                         return -EOPNOTSUPP;
2141                 break;
2142         default:
2143                 return -EOPNOTSUPP;
2144         }
2145
2146         return ieee80211_request_scan(sdata, req);
2147 }
2148
2149 static int
2150 ieee80211_sched_scan_start(struct wiphy *wiphy,
2151                            struct net_device *dev,
2152                            struct cfg80211_sched_scan_request *req)
2153 {
2154         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2155
2156         if (!sdata->local->ops->sched_scan_start)
2157                 return -EOPNOTSUPP;
2158
2159         return ieee80211_request_sched_scan_start(sdata, req);
2160 }
2161
2162 static int
2163 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
2164 {
2165         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2166
2167         if (!sdata->local->ops->sched_scan_stop)
2168                 return -EOPNOTSUPP;
2169
2170         return ieee80211_request_sched_scan_stop(sdata);
2171 }
2172
2173 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
2174                           struct cfg80211_auth_request *req)
2175 {
2176         return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2177 }
2178
2179 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
2180                            struct cfg80211_assoc_request *req)
2181 {
2182         return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2183 }
2184
2185 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
2186                             struct cfg80211_deauth_request *req)
2187 {
2188         return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2189 }
2190
2191 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
2192                               struct cfg80211_disassoc_request *req)
2193 {
2194         return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2195 }
2196
2197 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2198                                struct cfg80211_ibss_params *params)
2199 {
2200         return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
2201 }
2202
2203 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2204 {
2205         return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2206 }
2207
2208 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev,
2209                                     int rate[IEEE80211_NUM_BANDS])
2210 {
2211         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2212
2213         memcpy(sdata->vif.bss_conf.mcast_rate, rate,
2214                sizeof(int) * IEEE80211_NUM_BANDS);
2215
2216         return 0;
2217 }
2218
2219 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
2220 {
2221         struct ieee80211_local *local = wiphy_priv(wiphy);
2222         int err;
2223
2224         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
2225                 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
2226
2227                 if (err)
2228                         return err;
2229         }
2230
2231         if (changed & WIPHY_PARAM_COVERAGE_CLASS) {
2232                 err = drv_set_coverage_class(local, wiphy->coverage_class);
2233
2234                 if (err)
2235                         return err;
2236         }
2237
2238         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
2239                 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
2240
2241                 if (err)
2242                         return err;
2243         }
2244
2245         if (changed & WIPHY_PARAM_RETRY_SHORT) {
2246                 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY)
2247                         return -EINVAL;
2248                 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
2249         }
2250         if (changed & WIPHY_PARAM_RETRY_LONG) {
2251                 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY)
2252                         return -EINVAL;
2253                 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
2254         }
2255         if (changed &
2256             (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
2257                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
2258
2259         return 0;
2260 }
2261
2262 static int ieee80211_set_tx_power(struct wiphy *wiphy,
2263                                   struct wireless_dev *wdev,
2264                                   enum nl80211_tx_power_setting type, int mbm)
2265 {
2266         struct ieee80211_local *local = wiphy_priv(wiphy);
2267         struct ieee80211_sub_if_data *sdata;
2268
2269         if (wdev) {
2270                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2271
2272                 switch (type) {
2273                 case NL80211_TX_POWER_AUTOMATIC:
2274                         sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2275                         break;
2276                 case NL80211_TX_POWER_LIMITED:
2277                 case NL80211_TX_POWER_FIXED:
2278                         if (mbm < 0 || (mbm % 100))
2279                                 return -EOPNOTSUPP;
2280                         sdata->user_power_level = MBM_TO_DBM(mbm);
2281                         break;
2282                 }
2283
2284                 ieee80211_recalc_txpower(sdata);
2285
2286                 return 0;
2287         }
2288
2289         switch (type) {
2290         case NL80211_TX_POWER_AUTOMATIC:
2291                 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2292                 break;
2293         case NL80211_TX_POWER_LIMITED:
2294         case NL80211_TX_POWER_FIXED:
2295                 if (mbm < 0 || (mbm % 100))
2296                         return -EOPNOTSUPP;
2297                 local->user_power_level = MBM_TO_DBM(mbm);
2298                 break;
2299         }
2300
2301         mutex_lock(&local->iflist_mtx);
2302         list_for_each_entry(sdata, &local->interfaces, list)
2303                 sdata->user_power_level = local->user_power_level;
2304         list_for_each_entry(sdata, &local->interfaces, list)
2305                 ieee80211_recalc_txpower(sdata);
2306         mutex_unlock(&local->iflist_mtx);
2307
2308         return 0;
2309 }
2310
2311 static int ieee80211_get_tx_power(struct wiphy *wiphy,
2312                                   struct wireless_dev *wdev,
2313                                   int *dbm)
2314 {
2315         struct ieee80211_local *local = wiphy_priv(wiphy);
2316         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2317
2318         if (!local->use_chanctx)
2319                 *dbm = local->hw.conf.power_level;
2320         else
2321                 *dbm = sdata->vif.bss_conf.txpower;
2322
2323         return 0;
2324 }
2325
2326 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
2327                                   const u8 *addr)
2328 {
2329         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2330
2331         memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
2332
2333         return 0;
2334 }
2335
2336 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
2337 {
2338         struct ieee80211_local *local = wiphy_priv(wiphy);
2339
2340         drv_rfkill_poll(local);
2341 }
2342
2343 #ifdef CONFIG_NL80211_TESTMODE
2344 static int ieee80211_testmode_cmd(struct wiphy *wiphy,
2345                                   struct wireless_dev *wdev,
2346                                   void *data, int len)
2347 {
2348         struct ieee80211_local *local = wiphy_priv(wiphy);
2349         struct ieee80211_vif *vif = NULL;
2350
2351         if (!local->ops->testmode_cmd)
2352                 return -EOPNOTSUPP;
2353
2354         if (wdev) {
2355                 struct ieee80211_sub_if_data *sdata;
2356
2357                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2358                 if (sdata->flags & IEEE80211_SDATA_IN_DRIVER)
2359                         vif = &sdata->vif;
2360         }
2361
2362         return local->ops->testmode_cmd(&local->hw, vif, data, len);
2363 }
2364
2365 static int ieee80211_testmode_dump(struct wiphy *wiphy,
2366                                    struct sk_buff *skb,
2367                                    struct netlink_callback *cb,
2368                                    void *data, int len)
2369 {
2370         struct ieee80211_local *local = wiphy_priv(wiphy);
2371
2372         if (!local->ops->testmode_dump)
2373                 return -EOPNOTSUPP;
2374
2375         return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
2376 }
2377 #endif
2378
2379 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
2380                                 enum ieee80211_smps_mode smps_mode)
2381 {
2382         struct sta_info *sta;
2383         enum ieee80211_smps_mode old_req;
2384         int i;
2385
2386         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP))
2387                 return -EINVAL;
2388
2389         if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2390                 return 0;
2391
2392         old_req = sdata->u.ap.req_smps;
2393         sdata->u.ap.req_smps = smps_mode;
2394
2395         /* AUTOMATIC doesn't mean much for AP - don't allow it */
2396         if (old_req == smps_mode ||
2397             smps_mode == IEEE80211_SMPS_AUTOMATIC)
2398                 return 0;
2399
2400          /* If no associated stations, there's no need to do anything */
2401         if (!atomic_read(&sdata->u.ap.num_mcast_sta)) {
2402                 sdata->smps_mode = smps_mode;
2403                 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2404                 return 0;
2405         }
2406
2407         ht_dbg(sdata,
2408                "SMSP %d requested in AP mode, sending Action frame to %d stations\n",
2409                smps_mode, atomic_read(&sdata->u.ap.num_mcast_sta));
2410
2411         mutex_lock(&sdata->local->sta_mtx);
2412         for (i = 0; i < STA_HASH_SIZE; i++) {
2413                 for (sta = rcu_dereference_protected(sdata->local->sta_hash[i],
2414                                 lockdep_is_held(&sdata->local->sta_mtx));
2415                      sta;
2416                      sta = rcu_dereference_protected(sta->hnext,
2417                                 lockdep_is_held(&sdata->local->sta_mtx))) {
2418                         /*
2419                          * Only stations associated to our AP and
2420                          * associated VLANs
2421                          */
2422                         if (sta->sdata->bss != &sdata->u.ap)
2423                                 continue;
2424
2425                         /* This station doesn't support MIMO - skip it */
2426                         if (sta_info_tx_streams(sta) == 1)
2427                                 continue;
2428
2429                         /*
2430                          * Don't wake up a STA just to send the action frame
2431                          * unless we are getting more restrictive.
2432                          */
2433                         if (test_sta_flag(sta, WLAN_STA_PS_STA) &&
2434                             !ieee80211_smps_is_restrictive(sta->known_smps_mode,
2435                                                            smps_mode)) {
2436                                 ht_dbg(sdata,
2437                                        "Won't send SMPS to sleeping STA %pM\n",
2438                                        sta->sta.addr);
2439                                 continue;
2440                         }
2441
2442                         /*
2443                          * If the STA is not authorized, wait until it gets
2444                          * authorized and the action frame will be sent then.
2445                          */
2446                         if (!test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2447                                 continue;
2448
2449                         ht_dbg(sdata, "Sending SMPS to %pM\n", sta->sta.addr);
2450                         ieee80211_send_smps_action(sdata, smps_mode,
2451                                                    sta->sta.addr,
2452                                                    sdata->vif.bss_conf.bssid);
2453                 }
2454         }
2455         mutex_unlock(&sdata->local->sta_mtx);
2456
2457         sdata->smps_mode = smps_mode;
2458         ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2459
2460         return 0;
2461 }
2462
2463 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
2464                                  enum ieee80211_smps_mode smps_mode)
2465 {
2466         const u8 *ap;
2467         enum ieee80211_smps_mode old_req;
2468         int err;
2469
2470         lockdep_assert_held(&sdata->wdev.mtx);
2471
2472         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION))
2473                 return -EINVAL;
2474
2475         old_req = sdata->u.mgd.req_smps;
2476         sdata->u.mgd.req_smps = smps_mode;
2477
2478         if (old_req == smps_mode &&
2479             smps_mode != IEEE80211_SMPS_AUTOMATIC)
2480                 return 0;
2481
2482         /*
2483          * If not associated, or current association is not an HT
2484          * association, there's no need to do anything, just store
2485          * the new value until we associate.
2486          */
2487         if (!sdata->u.mgd.associated ||
2488             sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2489                 return 0;
2490
2491         ap = sdata->u.mgd.associated->bssid;
2492
2493         if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
2494                 if (sdata->u.mgd.powersave)
2495                         smps_mode = IEEE80211_SMPS_DYNAMIC;
2496                 else
2497                         smps_mode = IEEE80211_SMPS_OFF;
2498         }
2499
2500         /* send SM PS frame to AP */
2501         err = ieee80211_send_smps_action(sdata, smps_mode,
2502                                          ap, ap);
2503         if (err)
2504                 sdata->u.mgd.req_smps = old_req;
2505
2506         return err;
2507 }
2508
2509 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2510                                     bool enabled, int timeout)
2511 {
2512         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2513         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2514
2515         if (sdata->vif.type != NL80211_IFTYPE_STATION &&
2516             sdata->vif.type != NL80211_IFTYPE_MESH_POINT)
2517                 return -EOPNOTSUPP;
2518
2519         if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
2520                 return -EOPNOTSUPP;
2521
2522         if (enabled == sdata->u.mgd.powersave &&
2523             timeout == local->dynamic_ps_forced_timeout)
2524                 return 0;
2525
2526         sdata->u.mgd.powersave = enabled;
2527         local->dynamic_ps_forced_timeout = timeout;
2528
2529         /* no change, but if automatic follow powersave */
2530         sdata_lock(sdata);
2531         __ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps);
2532         sdata_unlock(sdata);
2533
2534         if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
2535                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2536
2537         ieee80211_recalc_ps(local, -1);
2538         ieee80211_recalc_ps_vif(sdata);
2539
2540         return 0;
2541 }
2542
2543 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
2544                                          struct net_device *dev,
2545                                          s32 rssi_thold, u32 rssi_hyst)
2546 {
2547         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2548         struct ieee80211_vif *vif = &sdata->vif;
2549         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2550
2551         if (rssi_thold == bss_conf->cqm_rssi_thold &&
2552             rssi_hyst == bss_conf->cqm_rssi_hyst)
2553                 return 0;
2554
2555         bss_conf->cqm_rssi_thold = rssi_thold;
2556         bss_conf->cqm_rssi_hyst = rssi_hyst;
2557
2558         /* tell the driver upon association, unless already associated */
2559         if (sdata->u.mgd.associated &&
2560             sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2561                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2562
2563         return 0;
2564 }
2565
2566 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
2567                                       struct net_device *dev,
2568                                       const u8 *addr,
2569                                       const struct cfg80211_bitrate_mask *mask)
2570 {
2571         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2572         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2573         int i, ret;
2574
2575         if (!ieee80211_sdata_running(sdata))
2576                 return -ENETDOWN;
2577
2578         if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) {
2579                 ret = drv_set_bitrate_mask(local, sdata, mask);
2580                 if (ret)
2581                         return ret;
2582         }
2583
2584         for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
2585                 struct ieee80211_supported_band *sband = wiphy->bands[i];
2586                 int j;
2587
2588                 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2589                 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].mcs,
2590                        sizeof(mask->control[i].mcs));
2591
2592                 sdata->rc_has_mcs_mask[i] = false;
2593                 if (!sband)
2594                         continue;
2595
2596                 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++)
2597                         if (~sdata->rc_rateidx_mcs_mask[i][j]) {
2598                                 sdata->rc_has_mcs_mask[i] = true;
2599                                 break;
2600                         }
2601         }
2602
2603         return 0;
2604 }
2605
2606 static int ieee80211_start_roc_work(struct ieee80211_local *local,
2607                                     struct ieee80211_sub_if_data *sdata,
2608                                     struct ieee80211_channel *channel,
2609                                     unsigned int duration, u64 *cookie,
2610                                     struct sk_buff *txskb,
2611                                     enum ieee80211_roc_type type)
2612 {
2613         struct ieee80211_roc_work *roc, *tmp;
2614         bool queued = false;
2615         int ret;
2616
2617         lockdep_assert_held(&local->mtx);
2618
2619         if (local->use_chanctx && !local->ops->remain_on_channel)
2620                 return -EOPNOTSUPP;
2621
2622         roc = kzalloc(sizeof(*roc), GFP_KERNEL);
2623         if (!roc)
2624                 return -ENOMEM;
2625
2626         roc->chan = channel;
2627         roc->duration = duration;
2628         roc->req_duration = duration;
2629         roc->frame = txskb;
2630         roc->type = type;
2631         roc->mgmt_tx_cookie = (unsigned long)txskb;
2632         roc->sdata = sdata;
2633         INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work);
2634         INIT_LIST_HEAD(&roc->dependents);
2635
2636         /* if there's one pending or we're scanning, queue this one */
2637         if (!list_empty(&local->roc_list) ||
2638             local->scanning || local->radar_detect_enabled)
2639                 goto out_check_combine;
2640
2641         /* if not HW assist, just queue & schedule work */
2642         if (!local->ops->remain_on_channel) {
2643                 ieee80211_queue_delayed_work(&local->hw, &roc->work, 0);
2644                 goto out_queue;
2645         }
2646
2647         /* otherwise actually kick it off here (for error handling) */
2648
2649         /*
2650          * If the duration is zero, then the driver
2651          * wouldn't actually do anything. Set it to
2652          * 10 for now.
2653          *
2654          * TODO: cancel the off-channel operation
2655          *       when we get the SKB's TX status and
2656          *       the wait time was zero before.
2657          */
2658         if (!duration)
2659                 duration = 10;
2660
2661         ret = drv_remain_on_channel(local, sdata, channel, duration, type);
2662         if (ret) {
2663                 kfree(roc);
2664                 return ret;
2665         }
2666
2667         roc->started = true;
2668         goto out_queue;
2669
2670  out_check_combine:
2671         list_for_each_entry(tmp, &local->roc_list, list) {
2672                 if (tmp->chan != channel || tmp->sdata != sdata)
2673                         continue;
2674
2675                 /*
2676                  * Extend this ROC if possible:
2677                  *
2678                  * If it hasn't started yet, just increase the duration
2679                  * and add the new one to the list of dependents.
2680                  * If the type of the new ROC has higher priority, modify the
2681                  * type of the previous one to match that of the new one.
2682                  */
2683                 if (!tmp->started) {
2684                         list_add_tail(&roc->list, &tmp->dependents);
2685                         tmp->duration = max(tmp->duration, roc->duration);
2686                         tmp->type = max(tmp->type, roc->type);
2687                         queued = true;
2688                         break;
2689                 }
2690
2691                 /* If it has already started, it's more difficult ... */
2692                 if (local->ops->remain_on_channel) {
2693                         unsigned long j = jiffies;
2694
2695                         /*
2696                          * In the offloaded ROC case, if it hasn't begun, add
2697                          * this new one to the dependent list to be handled
2698                          * when the master one begins. If it has begun,
2699                          * check that there's still a minimum time left and
2700                          * if so, start this one, transmitting the frame, but
2701                          * add it to the list directly after this one with
2702                          * a reduced time so we'll ask the driver to execute
2703                          * it right after finishing the previous one, in the
2704                          * hope that it'll also be executed right afterwards,
2705                          * effectively extending the old one.
2706                          * If there's no minimum time left, just add it to the
2707                          * normal list.
2708                          * TODO: the ROC type is ignored here, assuming that it
2709                          * is better to immediately use the current ROC.
2710                          */
2711                         if (!tmp->hw_begun) {
2712                                 list_add_tail(&roc->list, &tmp->dependents);
2713                                 queued = true;
2714                                 break;
2715                         }
2716
2717                         if (time_before(j + IEEE80211_ROC_MIN_LEFT,
2718                                         tmp->hw_start_time +
2719                                         msecs_to_jiffies(tmp->duration))) {
2720                                 int new_dur;
2721
2722                                 ieee80211_handle_roc_started(roc);
2723
2724                                 new_dur = roc->duration -
2725                                           jiffies_to_msecs(tmp->hw_start_time +
2726                                                            msecs_to_jiffies(
2727                                                                 tmp->duration) -
2728                                                            j);
2729
2730                                 if (new_dur > 0) {
2731                                         /* add right after tmp */
2732                                         list_add(&roc->list, &tmp->list);
2733                                 } else {
2734                                         list_add_tail(&roc->list,
2735                                                       &tmp->dependents);
2736                                 }
2737                                 queued = true;
2738                         }
2739                 } else if (del_timer_sync(&tmp->work.timer)) {
2740                         unsigned long new_end;
2741
2742                         /*
2743                          * In the software ROC case, cancel the timer, if
2744                          * that fails then the finish work is already
2745                          * queued/pending and thus we queue the new ROC
2746                          * normally, if that succeeds then we can extend
2747                          * the timer duration and TX the frame (if any.)
2748                          */
2749
2750                         list_add_tail(&roc->list, &tmp->dependents);
2751                         queued = true;
2752
2753                         new_end = jiffies + msecs_to_jiffies(roc->duration);
2754
2755                         /* ok, it was started & we canceled timer */
2756                         if (time_after(new_end, tmp->work.timer.expires))
2757                                 mod_timer(&tmp->work.timer, new_end);
2758                         else
2759                                 add_timer(&tmp->work.timer);
2760
2761                         ieee80211_handle_roc_started(roc);
2762                 }
2763                 break;
2764         }
2765
2766  out_queue:
2767         if (!queued)
2768                 list_add_tail(&roc->list, &local->roc_list);
2769
2770         /*
2771          * cookie is either the roc cookie (for normal roc)
2772          * or the SKB (for mgmt TX)
2773          */
2774         if (!txskb) {
2775                 /* local->mtx protects this */
2776                 local->roc_cookie_counter++;
2777                 roc->cookie = local->roc_cookie_counter;
2778                 /* wow, you wrapped 64 bits ... more likely a bug */
2779                 if (WARN_ON(roc->cookie == 0)) {
2780                         roc->cookie = 1;
2781                         local->roc_cookie_counter++;
2782                 }
2783                 *cookie = roc->cookie;
2784         } else {
2785                 *cookie = (unsigned long)txskb;
2786         }
2787
2788         return 0;
2789 }
2790
2791 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
2792                                        struct wireless_dev *wdev,
2793                                        struct ieee80211_channel *chan,
2794                                        unsigned int duration,
2795                                        u64 *cookie)
2796 {
2797         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2798         struct ieee80211_local *local = sdata->local;
2799         int ret;
2800
2801         mutex_lock(&local->mtx);
2802         ret = ieee80211_start_roc_work(local, sdata, chan,
2803                                        duration, cookie, NULL,
2804                                        IEEE80211_ROC_TYPE_NORMAL);
2805         mutex_unlock(&local->mtx);
2806
2807         return ret;
2808 }
2809
2810 static int ieee80211_cancel_roc(struct ieee80211_local *local,
2811                                 u64 cookie, bool mgmt_tx)
2812 {
2813         struct ieee80211_roc_work *roc, *tmp, *found = NULL;
2814         int ret;
2815
2816         mutex_lock(&local->mtx);
2817         list_for_each_entry_safe(roc, tmp, &local->roc_list, list) {
2818                 struct ieee80211_roc_work *dep, *tmp2;
2819
2820                 list_for_each_entry_safe(dep, tmp2, &roc->dependents, list) {
2821                         if (!mgmt_tx && dep->cookie != cookie)
2822                                 continue;
2823                         else if (mgmt_tx && dep->mgmt_tx_cookie != cookie)
2824                                 continue;
2825                         /* found dependent item -- just remove it */
2826                         list_del(&dep->list);
2827                         mutex_unlock(&local->mtx);
2828
2829                         ieee80211_roc_notify_destroy(dep, true);
2830                         return 0;
2831                 }
2832
2833                 if (!mgmt_tx && roc->cookie != cookie)
2834                         continue;
2835                 else if (mgmt_tx && roc->mgmt_tx_cookie != cookie)
2836                         continue;
2837
2838                 found = roc;
2839                 break;
2840         }
2841
2842         if (!found) {
2843                 mutex_unlock(&local->mtx);
2844                 return -ENOENT;
2845         }
2846
2847         /*
2848          * We found the item to cancel, so do that. Note that it
2849          * may have dependents, which we also cancel (and send
2850          * the expired signal for.) Not doing so would be quite
2851          * tricky here, but we may need to fix it later.
2852          */
2853
2854         if (local->ops->remain_on_channel) {
2855                 if (found->started) {
2856                         ret = drv_cancel_remain_on_channel(local);
2857                         if (WARN_ON_ONCE(ret)) {
2858                                 mutex_unlock(&local->mtx);
2859                                 return ret;
2860                         }
2861                 }
2862
2863                 list_del(&found->list);
2864
2865                 if (found->started)
2866                         ieee80211_start_next_roc(local);
2867                 mutex_unlock(&local->mtx);
2868
2869                 ieee80211_roc_notify_destroy(found, true);
2870         } else {
2871                 /* work may be pending so use it all the time */
2872                 found->abort = true;
2873                 ieee80211_queue_delayed_work(&local->hw, &found->work, 0);
2874
2875                 mutex_unlock(&local->mtx);
2876
2877                 /* work will clean up etc */
2878                 flush_delayed_work(&found->work);
2879                 WARN_ON(!found->to_be_freed);
2880                 kfree(found);
2881         }
2882
2883         return 0;
2884 }
2885
2886 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
2887                                               struct wireless_dev *wdev,
2888                                               u64 cookie)
2889 {
2890         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2891         struct ieee80211_local *local = sdata->local;
2892
2893         return ieee80211_cancel_roc(local, cookie, false);
2894 }
2895
2896 static int ieee80211_start_radar_detection(struct wiphy *wiphy,
2897                                            struct net_device *dev,
2898                                            struct cfg80211_chan_def *chandef)
2899 {
2900         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2901         struct ieee80211_local *local = sdata->local;
2902         unsigned long timeout;
2903         int err;
2904
2905         if (!list_empty(&local->roc_list) || local->scanning)
2906                 return -EBUSY;
2907
2908         /* whatever, but channel contexts should not complain about that one */
2909         sdata->smps_mode = IEEE80211_SMPS_OFF;
2910         sdata->needed_rx_chains = local->rx_chains;
2911         sdata->radar_required = true;
2912
2913         mutex_lock(&local->iflist_mtx);
2914         err = ieee80211_vif_use_channel(sdata, chandef,
2915                                         IEEE80211_CHANCTX_SHARED);
2916         mutex_unlock(&local->iflist_mtx);
2917         if (err)
2918                 return err;
2919
2920         timeout = msecs_to_jiffies(IEEE80211_DFS_MIN_CAC_TIME_MS);
2921         ieee80211_queue_delayed_work(&sdata->local->hw,
2922                                      &sdata->dfs_cac_timer_work, timeout);
2923
2924         return 0;
2925 }
2926
2927 static struct cfg80211_beacon_data *
2928 cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon)
2929 {
2930         struct cfg80211_beacon_data *new_beacon;
2931         u8 *pos;
2932         int len;
2933
2934         len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len +
2935               beacon->proberesp_ies_len + beacon->assocresp_ies_len +
2936               beacon->probe_resp_len;
2937
2938         new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL);
2939         if (!new_beacon)
2940                 return NULL;
2941
2942         pos = (u8 *)(new_beacon + 1);
2943         if (beacon->head_len) {
2944                 new_beacon->head_len = beacon->head_len;
2945                 new_beacon->head = pos;
2946                 memcpy(pos, beacon->head, beacon->head_len);
2947                 pos += beacon->head_len;
2948         }
2949         if (beacon->tail_len) {
2950                 new_beacon->tail_len = beacon->tail_len;
2951                 new_beacon->tail = pos;
2952                 memcpy(pos, beacon->tail, beacon->tail_len);
2953                 pos += beacon->tail_len;
2954         }
2955         if (beacon->beacon_ies_len) {
2956                 new_beacon->beacon_ies_len = beacon->beacon_ies_len;
2957                 new_beacon->beacon_ies = pos;
2958                 memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len);
2959                 pos += beacon->beacon_ies_len;
2960         }
2961         if (beacon->proberesp_ies_len) {
2962                 new_beacon->proberesp_ies_len = beacon->proberesp_ies_len;
2963                 new_beacon->proberesp_ies = pos;
2964                 memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len);
2965                 pos += beacon->proberesp_ies_len;
2966         }
2967         if (beacon->assocresp_ies_len) {
2968                 new_beacon->assocresp_ies_len = beacon->assocresp_ies_len;
2969                 new_beacon->assocresp_ies = pos;
2970                 memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len);
2971                 pos += beacon->assocresp_ies_len;
2972         }
2973         if (beacon->probe_resp_len) {
2974                 new_beacon->probe_resp_len = beacon->probe_resp_len;
2975                 beacon->probe_resp = pos;
2976                 memcpy(pos, beacon->probe_resp, beacon->probe_resp_len);
2977                 pos += beacon->probe_resp_len;
2978         }
2979
2980         return new_beacon;
2981 }
2982
2983 void ieee80211_csa_finalize_work(struct work_struct *work)
2984 {
2985         struct ieee80211_sub_if_data *sdata =
2986                 container_of(work, struct ieee80211_sub_if_data,
2987                              csa_finalize_work);
2988         struct ieee80211_local *local = sdata->local;
2989         int err, changed = 0;
2990
2991         sdata_lock(sdata);
2992         /* AP might have been stopped while waiting for the lock. */
2993         if (!sdata->vif.csa_active)
2994                 goto unlock;
2995
2996         if (!ieee80211_sdata_running(sdata))
2997                 goto unlock;
2998
2999         sdata->radar_required = sdata->csa_radar_required;
3000         err = ieee80211_vif_change_channel(sdata, &changed);
3001         if (WARN_ON(err < 0))
3002                 goto unlock;
3003
3004         if (!local->use_chanctx) {
3005                 local->_oper_chandef = sdata->csa_chandef;
3006                 ieee80211_hw_config(local, 0);
3007         }
3008
3009         ieee80211_bss_info_change_notify(sdata, changed);
3010
3011         sdata->vif.csa_active = false;
3012         switch (sdata->vif.type) {
3013         case NL80211_IFTYPE_AP:
3014                 err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon);
3015                 if (err < 0)
3016                         goto unlock;
3017
3018                 changed |= err;
3019                 kfree(sdata->u.ap.next_beacon);
3020                 sdata->u.ap.next_beacon = NULL;
3021
3022                 ieee80211_bss_info_change_notify(sdata, err);
3023                 break;
3024         case NL80211_IFTYPE_ADHOC:
3025                 ieee80211_ibss_finish_csa(sdata);
3026                 break;
3027 #ifdef CONFIG_MAC80211_MESH
3028         case NL80211_IFTYPE_MESH_POINT:
3029                 err = ieee80211_mesh_finish_csa(sdata);
3030                 if (err < 0)
3031                         goto unlock;
3032                 break;
3033 #endif
3034         default:
3035                 WARN_ON(1);
3036                 goto unlock;
3037         }
3038
3039         ieee80211_wake_queues_by_reason(&sdata->local->hw,
3040                                         IEEE80211_MAX_QUEUE_MAP,
3041                                         IEEE80211_QUEUE_STOP_REASON_CSA);
3042
3043         cfg80211_ch_switch_notify(sdata->dev, &sdata->csa_chandef);
3044
3045 unlock:
3046         sdata_unlock(sdata);
3047 }
3048
3049 static int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3050                                     struct cfg80211_csa_settings *params)
3051 {
3052         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3053         struct ieee80211_local *local = sdata->local;
3054         struct ieee80211_chanctx_conf *chanctx_conf;
3055         struct ieee80211_chanctx *chanctx;
3056         struct ieee80211_if_mesh __maybe_unused *ifmsh;
3057         int err, num_chanctx;
3058
3059         lockdep_assert_held(&sdata->wdev.mtx);
3060
3061         if (!list_empty(&local->roc_list) || local->scanning)
3062                 return -EBUSY;
3063
3064         if (sdata->wdev.cac_started)
3065                 return -EBUSY;
3066
3067         if (cfg80211_chandef_identical(&params->chandef,
3068                                        &sdata->vif.bss_conf.chandef))
3069                 return -EINVAL;
3070
3071         rcu_read_lock();
3072         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3073         if (!chanctx_conf) {
3074                 rcu_read_unlock();
3075                 return -EBUSY;
3076         }
3077
3078         /* don't handle for multi-VIF cases */
3079         chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf);
3080         if (chanctx->refcount > 1) {
3081                 rcu_read_unlock();
3082                 return -EBUSY;
3083         }
3084         num_chanctx = 0;
3085         list_for_each_entry_rcu(chanctx, &local->chanctx_list, list)
3086                 num_chanctx++;
3087         rcu_read_unlock();
3088
3089         if (num_chanctx > 1)
3090                 return -EBUSY;
3091
3092         /* don't allow another channel switch if one is already active. */
3093         if (sdata->vif.csa_active)
3094                 return -EBUSY;
3095
3096         switch (sdata->vif.type) {
3097         case NL80211_IFTYPE_AP:
3098                 sdata->csa_counter_offset_beacon =
3099                         params->counter_offset_beacon;
3100                 sdata->csa_counter_offset_presp = params->counter_offset_presp;
3101                 sdata->u.ap.next_beacon =
3102                         cfg80211_beacon_dup(&params->beacon_after);
3103                 if (!sdata->u.ap.next_beacon)
3104                         return -ENOMEM;
3105
3106                 err = ieee80211_assign_beacon(sdata, &params->beacon_csa);
3107                 if (err < 0) {
3108                         kfree(sdata->u.ap.next_beacon);
3109                         return err;
3110                 }
3111                 break;
3112         case NL80211_IFTYPE_ADHOC:
3113                 if (!sdata->vif.bss_conf.ibss_joined)
3114                         return -EINVAL;
3115
3116                 if (params->chandef.width != sdata->u.ibss.chandef.width)
3117                         return -EINVAL;
3118
3119                 switch (params->chandef.width) {
3120                 case NL80211_CHAN_WIDTH_40:
3121                         if (cfg80211_get_chandef_type(&params->chandef) !=
3122                             cfg80211_get_chandef_type(&sdata->u.ibss.chandef))
3123                                 return -EINVAL;
3124                 case NL80211_CHAN_WIDTH_5:
3125                 case NL80211_CHAN_WIDTH_10:
3126                 case NL80211_CHAN_WIDTH_20_NOHT:
3127                 case NL80211_CHAN_WIDTH_20:
3128                         break;
3129                 default:
3130                         return -EINVAL;
3131                 }
3132
3133                 /* changes into another band are not supported */
3134                 if (sdata->u.ibss.chandef.chan->band !=
3135                     params->chandef.chan->band)
3136                         return -EINVAL;
3137
3138                 err = ieee80211_ibss_csa_beacon(sdata, params);
3139                 if (err < 0)
3140                         return err;
3141                 break;
3142 #ifdef CONFIG_MAC80211_MESH
3143         case NL80211_IFTYPE_MESH_POINT:
3144                 ifmsh = &sdata->u.mesh;
3145
3146                 if (!ifmsh->mesh_id)
3147                         return -EINVAL;
3148
3149                 if (params->chandef.width != sdata->vif.bss_conf.chandef.width)
3150                         return -EINVAL;
3151
3152                 /* changes into another band are not supported */
3153                 if (sdata->vif.bss_conf.chandef.chan->band !=
3154                     params->chandef.chan->band)
3155                         return -EINVAL;
3156
3157                 err = ieee80211_mesh_csa_beacon(sdata, params, true);
3158                 if (err < 0)
3159                         return err;
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 };