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 && key_idx < NUM_DEFAULT_KEYS)
 305                         key = rcu_dereference(sta->ptk[key_idx]);
 306                 else if (!pairwise &&
 307                          key_idx < NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS)
 308                         key = rcu_dereference(sta->gtk[key_idx]);
 309         } else
 310                 key = rcu_dereference(sdata->keys[key_idx]);
 311
 312         if (!key)
 313                 goto out;
 314
 315         memset(&params, 0, sizeof(params));
 316
 317         params.cipher = key->conf.cipher;
 318
 319         switch (key->conf.cipher) {
 320         case WLAN_CIPHER_SUITE_TKIP:
 321                 iv32 = key->u.tkip.tx.iv32;
 322                 iv16 = key->u.tkip.tx.iv16;
 323
 324                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)
 325                         drv_get_tkip_seq(sdata->local,
 326                                          key->conf.hw_key_idx,
 327                                          &iv32, &iv16);
 328
 329                 seq[0] = iv16 & 0xff;
 330                 seq[1] = (iv16 >> 8) & 0xff;
 331                 seq[2] = iv32 & 0xff;
 332                 seq[3] = (iv32 >> 8) & 0xff;
 333                 seq[4] = (iv32 >> 16) & 0xff;
 334                 seq[5] = (iv32 >> 24) & 0xff;
 335                 params.seq = seq;
 336                 params.seq_len = 6;
 337                 break;
 338         case WLAN_CIPHER_SUITE_CCMP:
 339                 pn64 = atomic64_read(&key->u.ccmp.tx_pn);
 340                 seq[0] = pn64;
 341                 seq[1] = pn64 >> 8;
 342                 seq[2] = pn64 >> 16;
 343                 seq[3] = pn64 >> 24;
 344                 seq[4] = pn64 >> 32;
 345                 seq[5] = pn64 >> 40;
 346                 params.seq = seq;
 347                 params.seq_len = 6;
 348                 break;
 349         case WLAN_CIPHER_SUITE_AES_CMAC:
 350                 pn64 = atomic64_read(&key->u.aes_cmac.tx_pn);
 351                 seq[0] = pn64;
 352                 seq[1] = pn64 >> 8;
 353                 seq[2] = pn64 >> 16;
 354                 seq[3] = pn64 >> 24;
 355                 seq[4] = pn64 >> 32;
 356                 seq[5] = pn64 >> 40;
 357                 params.seq = seq;
 358                 params.seq_len = 6;
 359                 break;
 360         }
 361
 362         params.key = key->conf.key;
 363         params.key_len = key->conf.keylen;
 364
 365         callback(cookie, &params);
 366         err = 0;
 367
 368  out:
 369         rcu_read_unlock();
 370         return err;
 371 }
 372
 373 static int ieee80211_config_default_key(struct wiphy *wiphy,
 374                                         struct net_device *dev,
 375                                         u8 key_idx, bool uni,
 376                                         bool multi)
 377 {
 378         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 379
 380         ieee80211_set_default_key(sdata, key_idx, uni, multi);
 381
 382         return 0;
 383 }
 384
 385 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
 386                                              struct net_device *dev,
 387                                              u8 key_idx)
 388 {
 389         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 390
 391         ieee80211_set_default_mgmt_key(sdata, key_idx);
 392
 393         return 0;
 394 }
 395
 396 void sta_set_rate_info_tx(struct sta_info *sta,
 397                           const struct ieee80211_tx_rate *rate,
 398                           struct rate_info *rinfo)
 399 {
 400         rinfo->flags = 0;
 401         if (rate->flags & IEEE80211_TX_RC_MCS) {
 402                 rinfo->flags |= RATE_INFO_FLAGS_MCS;
 403                 rinfo->mcs = rate->idx;
 404         } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) {
 405                 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
 406                 rinfo->mcs = ieee80211_rate_get_vht_mcs(rate);
 407                 rinfo->nss = ieee80211_rate_get_vht_nss(rate);
 408         } else {
 409                 struct ieee80211_supported_band *sband;
 410                 int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
 411                 u16 brate;
 412
 413                 sband = sta->local->hw.wiphy->bands[
 414                                 ieee80211_get_sdata_band(sta->sdata)];
 415                 brate = sband->bitrates[rate->idx].bitrate;
 416                 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
 417         }
 418         if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 419                 rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 420         if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
 421                 rinfo->flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH;
 422         if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
 423                 rinfo->flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH;
 424         if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
 425                 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
 426 }
 427
 428 void sta_set_rate_info_rx(struct sta_info *sta, struct rate_info *rinfo)
 429 {
 430         rinfo->flags = 0;
 431
 432         if (sta->last_rx_rate_flag & RX_FLAG_HT) {
 433                 rinfo->flags |= RATE_INFO_FLAGS_MCS;
 434                 rinfo->mcs = sta->last_rx_rate_idx;
 435         } else if (sta->last_rx_rate_flag & RX_FLAG_VHT) {
 436                 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
 437                 rinfo->nss = sta->last_rx_rate_vht_nss;
 438                 rinfo->mcs = sta->last_rx_rate_idx;
 439         } else {
 440                 struct ieee80211_supported_band *sband;
 441                 int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
 442                 u16 brate;
 443
 444                 sband = sta->local->hw.wiphy->bands[
 445                                 ieee80211_get_sdata_band(sta->sdata)];
 446                 brate = sband->bitrates[sta->last_rx_rate_idx].bitrate;
 447                 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
 448         }
 449
 450         if (sta->last_rx_rate_flag & RX_FLAG_40MHZ)
 451                 rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 452         if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI)
 453                 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
 454         if (sta->last_rx_rate_vht_flag & RX_VHT_FLAG_80MHZ)
 455                 rinfo->flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH;
 456         if (sta->last_rx_rate_vht_flag & RX_VHT_FLAG_80P80MHZ)
 457                 rinfo->flags |= RATE_INFO_FLAGS_80P80_MHZ_WIDTH;
 458         if (sta->last_rx_rate_vht_flag & RX_VHT_FLAG_160MHZ)
 459                 rinfo->flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH;
 460 }
 461
 462 static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
 463 {
 464         struct ieee80211_sub_if_data *sdata = sta->sdata;
 465         struct ieee80211_local *local = sdata->local;
 466         struct timespec uptime;
 467         u64 packets = 0;
 468         int i, ac;
 469
 470         sinfo->generation = sdata->local->sta_generation;
 471
 472         sinfo->filled = STATION_INFO_INACTIVE_TIME |
 473                         STATION_INFO_RX_BYTES64 |
 474                         STATION_INFO_TX_BYTES64 |
 475                         STATION_INFO_RX_PACKETS |
 476                         STATION_INFO_TX_PACKETS |
 477                         STATION_INFO_TX_RETRIES |
 478                         STATION_INFO_TX_FAILED |
 479                         STATION_INFO_TX_BITRATE |
 480                         STATION_INFO_RX_BITRATE |
 481                         STATION_INFO_RX_DROP_MISC |
 482                         STATION_INFO_BSS_PARAM |
 483                         STATION_INFO_CONNECTED_TIME |
 484                         STATION_INFO_STA_FLAGS |
 485                         STATION_INFO_BEACON_LOSS_COUNT;
 486
 487         do_posix_clock_monotonic_gettime(&uptime);
 488         sinfo->connected_time = uptime.tv_sec - sta->last_connected;
 489
 490         sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx);
 491         sinfo->tx_bytes = 0;
 492         for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
 493                 sinfo->tx_bytes += sta->tx_bytes[ac];
 494                 packets += sta->tx_packets[ac];
 495         }
 496         sinfo->tx_packets = packets;
 497         sinfo->rx_bytes = sta->rx_bytes;
 498         sinfo->rx_packets = sta->rx_packets;
 499         sinfo->tx_retries = sta->tx_retry_count;
 500         sinfo->tx_failed = sta->tx_retry_failed;
 501         sinfo->rx_dropped_misc = sta->rx_dropped;
 502         sinfo->beacon_loss_count = sta->beacon_loss_count;
 503
 504         if ((sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) ||
 505             (sta->local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)) {
 506                 sinfo->filled |= STATION_INFO_SIGNAL | STATION_INFO_SIGNAL_AVG;
 507                 if (!local->ops->get_rssi ||
 508                     drv_get_rssi(local, sdata, &sta->sta, &sinfo->signal))
 509                         sinfo->signal = (s8)sta->last_signal;
 510                 sinfo->signal_avg = (s8) -ewma_read(&sta->avg_signal);
 511         }
 512         if (sta->chains) {
 513                 sinfo->filled |= STATION_INFO_CHAIN_SIGNAL |
 514                                  STATION_INFO_CHAIN_SIGNAL_AVG;
 515
 516                 sinfo->chains = sta->chains;
 517                 for (i = 0; i < ARRAY_SIZE(sinfo->chain_signal); i++) {
 518                         sinfo->chain_signal[i] = sta->chain_signal_last[i];
 519                         sinfo->chain_signal_avg[i] =
 520                                 (s8) -ewma_read(&sta->chain_signal_avg[i]);
 521                 }
 522         }
 523
 524         sta_set_rate_info_tx(sta, &sta->last_tx_rate, &sinfo->txrate);
 525         sta_set_rate_info_rx(sta, &sinfo->rxrate);
 526
 527         if (ieee80211_vif_is_mesh(&sdata->vif)) {
 528 #ifdef CONFIG_MAC80211_MESH
 529                 sinfo->filled |= STATION_INFO_LLID |
 530                                  STATION_INFO_PLID |
 531                                  STATION_INFO_PLINK_STATE |
 532                                  STATION_INFO_LOCAL_PM |
 533                                  STATION_INFO_PEER_PM |
 534                                  STATION_INFO_NONPEER_PM;
 535
 536                 sinfo->llid = sta->llid;
 537                 sinfo->plid = sta->plid;
 538                 sinfo->plink_state = sta->plink_state;
 539                 if (test_sta_flag(sta, WLAN_STA_TOFFSET_KNOWN)) {
 540                         sinfo->filled |= STATION_INFO_T_OFFSET;
 541                         sinfo->t_offset = sta->t_offset;
 542                 }
 543                 sinfo->local_pm = sta->local_pm;
 544                 sinfo->peer_pm = sta->peer_pm;
 545                 sinfo->nonpeer_pm = sta->nonpeer_pm;
 546 #endif
 547         }
 548
 549         sinfo->bss_param.flags = 0;
 550         if (sdata->vif.bss_conf.use_cts_prot)
 551                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_CTS_PROT;
 552         if (sdata->vif.bss_conf.use_short_preamble)
 553                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_PREAMBLE;
 554         if (sdata->vif.bss_conf.use_short_slot)
 555                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME;
 556         sinfo->bss_param.dtim_period = sdata->local->hw.conf.ps_dtim_period;
 557         sinfo->bss_param.beacon_interval = sdata->vif.bss_conf.beacon_int;
 558
 559         sinfo->sta_flags.set = 0;
 560         sinfo->sta_flags.mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
 561                                 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
 562                                 BIT(NL80211_STA_FLAG_WME) |
 563                                 BIT(NL80211_STA_FLAG_MFP) |
 564                                 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
 565                                 BIT(NL80211_STA_FLAG_ASSOCIATED) |
 566                                 BIT(NL80211_STA_FLAG_TDLS_PEER);
 567         if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
 568                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHORIZED);
 569         if (test_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE))
 570                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
 571         if (test_sta_flag(sta, WLAN_STA_WME))
 572                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_WME);
 573         if (test_sta_flag(sta, WLAN_STA_MFP))
 574                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_MFP);
 575         if (test_sta_flag(sta, WLAN_STA_AUTH))
 576                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHENTICATED);
 577         if (test_sta_flag(sta, WLAN_STA_ASSOC))
 578                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
 579         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER))
 580                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_TDLS_PEER);
 581 }
 582
 583 static const char ieee80211_gstrings_sta_stats[][ETH_GSTRING_LEN] = {
 584         "rx_packets", "rx_bytes", "wep_weak_iv_count",
 585         "rx_duplicates", "rx_fragments", "rx_dropped",
 586         "tx_packets", "tx_bytes", "tx_fragments",
 587         "tx_filtered", "tx_retry_failed", "tx_retries",
 588         "beacon_loss", "sta_state", "txrate", "rxrate", "signal",
 589         "channel", "noise", "ch_time", "ch_time_busy",
 590         "ch_time_ext_busy", "ch_time_rx", "ch_time_tx"
 591 };
 592 #define STA_STATS_LEN   ARRAY_SIZE(ieee80211_gstrings_sta_stats)
 593
 594 static int ieee80211_get_et_sset_count(struct wiphy *wiphy,
 595                                        struct net_device *dev,
 596                                        int sset)
 597 {
 598         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 599         int rv = 0;
 600
 601         if (sset == ETH_SS_STATS)
 602                 rv += STA_STATS_LEN;
 603
 604         rv += drv_get_et_sset_count(sdata, sset);
 605
 606         if (rv == 0)
 607                 return -EOPNOTSUPP;
 608         return rv;
 609 }
 610
 611 static void ieee80211_get_et_stats(struct wiphy *wiphy,
 612                                    struct net_device *dev,
 613                                    struct ethtool_stats *stats,
 614                                    u64 *data)
 615 {
 616         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 617         struct ieee80211_chanctx_conf *chanctx_conf;
 618         struct ieee80211_channel *channel;
 619         struct sta_info *sta;
 620         struct ieee80211_local *local = sdata->local;
 621         struct station_info sinfo;
 622         struct survey_info survey;
 623         int i, q;
 624 #define STA_STATS_SURVEY_LEN 7
 625
 626         memset(data, 0, sizeof(u64) * STA_STATS_LEN);
 627
 628 #define ADD_STA_STATS(sta)                              \
 629         do {                                            \
 630                 data[i++] += sta->rx_packets;           \
 631                 data[i++] += sta->rx_bytes;             \
 632                 data[i++] += sta->wep_weak_iv_count;    \
 633                 data[i++] += sta->num_duplicates;       \
 634                 data[i++] += sta->rx_fragments;         \
 635                 data[i++] += sta->rx_dropped;           \
 636                                                         \
 637                 data[i++] += sinfo.tx_packets;          \
 638                 data[i++] += sinfo.tx_bytes;            \
 639                 data[i++] += sta->tx_fragments;         \
 640                 data[i++] += sta->tx_filtered_count;    \
 641                 data[i++] += sta->tx_retry_failed;      \
 642                 data[i++] += sta->tx_retry_count;       \
 643                 data[i++] += sta->beacon_loss_count;    \
 644         } while (0)
 645
 646         /* For Managed stations, find the single station based on BSSID
 647          * and use that.  For interface types, iterate through all available
 648          * stations and add stats for any station that is assigned to this
 649          * network device.
 650          */
 651
 652         mutex_lock(&local->sta_mtx);
 653
 654         if (sdata->vif.type == NL80211_IFTYPE_STATION) {
 655                 sta = sta_info_get_bss(sdata, sdata->u.mgd.bssid);
 656
 657                 if (!(sta && !WARN_ON(sta->sdata->dev != dev)))
 658                         goto do_survey;
 659
 660                 sinfo.filled = 0;
 661                 sta_set_sinfo(sta, &sinfo);
 662
 663                 i = 0;
 664                 ADD_STA_STATS(sta);
 665
 666                 data[i++] = sta->sta_state;
 667
 668
 669                 if (sinfo.filled & STATION_INFO_TX_BITRATE)
 670                         data[i] = 100000 *
 671                                 cfg80211_calculate_bitrate(&sinfo.txrate);
 672                 i++;
 673                 if (sinfo.filled & STATION_INFO_RX_BITRATE)
 674                         data[i] = 100000 *
 675                                 cfg80211_calculate_bitrate(&sinfo.rxrate);
 676                 i++;
 677
 678                 if (sinfo.filled & STATION_INFO_SIGNAL_AVG)
 679                         data[i] = (u8)sinfo.signal_avg;
 680                 i++;
 681         } else {
 682                 list_for_each_entry(sta, &local->sta_list, list) {
 683                         /* Make sure this station belongs to the proper dev */
 684                         if (sta->sdata->dev != dev)
 685                                 continue;
 686
 687                         sinfo.filled = 0;
 688                         sta_set_sinfo(sta, &sinfo);
 689                         i = 0;
 690                         ADD_STA_STATS(sta);
 691                 }
 692         }
 693
 694 do_survey:
 695         i = STA_STATS_LEN - STA_STATS_SURVEY_LEN;
 696         /* Get survey stats for current channel */
 697         survey.filled = 0;
 698
 699         rcu_read_lock();
 700         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
 701         if (chanctx_conf)
 702                 channel = chanctx_conf->def.chan;
 703         else
 704                 channel = NULL;
 705         rcu_read_unlock();
 706
 707         if (channel) {
 708                 q = 0;
 709                 do {
 710                         survey.filled = 0;
 711                         if (drv_get_survey(local, q, &survey) != 0) {
 712                                 survey.filled = 0;
 713                                 break;
 714                         }
 715                         q++;
 716                 } while (channel != survey.channel);
 717         }
 718
 719         if (survey.filled)
 720                 data[i++] = survey.channel->center_freq;
 721         else
 722                 data[i++] = 0;
 723         if (survey.filled & SURVEY_INFO_NOISE_DBM)
 724                 data[i++] = (u8)survey.noise;
 725         else
 726                 data[i++] = -1LL;
 727         if (survey.filled & SURVEY_INFO_CHANNEL_TIME)
 728                 data[i++] = survey.channel_time;
 729         else
 730                 data[i++] = -1LL;
 731         if (survey.filled & SURVEY_INFO_CHANNEL_TIME_BUSY)
 732                 data[i++] = survey.channel_time_busy;
 733         else
 734                 data[i++] = -1LL;
 735         if (survey.filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY)
 736                 data[i++] = survey.channel_time_ext_busy;
 737         else
 738                 data[i++] = -1LL;
 739         if (survey.filled & SURVEY_INFO_CHANNEL_TIME_RX)
 740                 data[i++] = survey.channel_time_rx;
 741         else
 742                 data[i++] = -1LL;
 743         if (survey.filled & SURVEY_INFO_CHANNEL_TIME_TX)
 744                 data[i++] = survey.channel_time_tx;
 745         else
 746                 data[i++] = -1LL;
 747
 748         mutex_unlock(&local->sta_mtx);
 749
 750         if (WARN_ON(i != STA_STATS_LEN))
 751                 return;
 752
 753         drv_get_et_stats(sdata, stats, &(data[STA_STATS_LEN]));
 754 }
 755
 756 static void ieee80211_get_et_strings(struct wiphy *wiphy,
 757                                      struct net_device *dev,
 758                                      u32 sset, u8 *data)
 759 {
 760         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 761         int sz_sta_stats = 0;
 762
 763         if (sset == ETH_SS_STATS) {
 764                 sz_sta_stats = sizeof(ieee80211_gstrings_sta_stats);
 765                 memcpy(data, ieee80211_gstrings_sta_stats, sz_sta_stats);
 766         }
 767         drv_get_et_strings(sdata, sset, &(data[sz_sta_stats]));
 768 }
 769
 770 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
 771                                  int idx, u8 *mac, struct station_info *sinfo)
 772 {
 773         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 774         struct ieee80211_local *local = sdata->local;
 775         struct sta_info *sta;
 776         int ret = -ENOENT;
 777
 778         mutex_lock(&local->sta_mtx);
 779
 780         sta = sta_info_get_by_idx(sdata, idx);
 781         if (sta) {
 782                 ret = 0;
 783                 memcpy(mac, sta->sta.addr, ETH_ALEN);
 784                 sta_set_sinfo(sta, sinfo);
 785         }
 786
 787         mutex_unlock(&local->sta_mtx);
 788
 789         return ret;
 790 }
 791
 792 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
 793                                  int idx, struct survey_info *survey)
 794 {
 795         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 796
 797         return drv_get_survey(local, idx, survey);
 798 }
 799
 800 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 801                                  u8 *mac, struct station_info *sinfo)
 802 {
 803         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 804         struct ieee80211_local *local = sdata->local;
 805         struct sta_info *sta;
 806         int ret = -ENOENT;
 807
 808         mutex_lock(&local->sta_mtx);
 809
 810         sta = sta_info_get_bss(sdata, mac);
 811         if (sta) {
 812                 ret = 0;
 813                 sta_set_sinfo(sta, sinfo);
 814         }
 815
 816         mutex_unlock(&local->sta_mtx);
 817
 818         return ret;
 819 }
 820
 821 static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
 822                                          struct cfg80211_chan_def *chandef)
 823 {
 824         struct ieee80211_local *local = wiphy_priv(wiphy);
 825         struct ieee80211_sub_if_data *sdata;
 826         int ret = 0;
 827
 828         if (cfg80211_chandef_identical(&local->monitor_chandef, chandef))
 829                 return 0;
 830
 831         mutex_lock(&local->mtx);
 832         mutex_lock(&local->iflist_mtx);
 833         if (local->use_chanctx) {
 834                 sdata = rcu_dereference_protected(
 835                                 local->monitor_sdata,
 836                                 lockdep_is_held(&local->iflist_mtx));
 837                 if (sdata) {
 838                         ieee80211_vif_release_channel(sdata);
 839                         ret = ieee80211_vif_use_channel(sdata, chandef,
 840                                         IEEE80211_CHANCTX_EXCLUSIVE);
 841                 }
 842         } else if (local->open_count == local->monitors) {
 843                 local->_oper_chandef = *chandef;
 844                 ieee80211_hw_config(local, 0);
 845         }
 846
 847         if (ret == 0)
 848                 local->monitor_chandef = *chandef;
 849         mutex_unlock(&local->iflist_mtx);
 850         mutex_unlock(&local->mtx);
 851
 852         return ret;
 853 }
 854
 855 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
 856                                     const u8 *resp, size_t resp_len)
 857 {
 858         struct probe_resp *new, *old;
 859
 860         if (!resp || !resp_len)
 861                 return 1;
 862
 863         old = sdata_dereference(sdata->u.ap.probe_resp, sdata);
 864
 865         new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL);
 866         if (!new)
 867                 return -ENOMEM;
 868
 869         new->len = resp_len;
 870         memcpy(new->data, resp, resp_len);
 871
 872         rcu_assign_pointer(sdata->u.ap.probe_resp, new);
 873         if (old)
 874                 kfree_rcu(old, rcu_head);
 875
 876         return 0;
 877 }
 878
 879 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
 880                                    struct cfg80211_beacon_data *params)
 881 {
 882         struct beacon_data *new, *old;
 883         int new_head_len, new_tail_len;
 884         int size, err;
 885         u32 changed = BSS_CHANGED_BEACON;
 886
 887         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 888
 889
 890         /* Need to have a beacon head if we don't have one yet */
 891         if (!params->head && !old)
 892                 return -EINVAL;
 893
 894         /* new or old head? */
 895         if (params->head)
 896                 new_head_len = params->head_len;
 897         else
 898                 new_head_len = old->head_len;
 899
 900         /* new or old tail? */
 901         if (params->tail || !old)
 902                 /* params->tail_len will be zero for !params->tail */
 903                 new_tail_len = params->tail_len;
 904         else
 905                 new_tail_len = old->tail_len;
 906
 907         size = sizeof(*new) + new_head_len + new_tail_len;
 908
 909         new = kzalloc(size, GFP_KERNEL);
 910         if (!new)
 911                 return -ENOMEM;
 912
 913         /* start filling the new info now */
 914
 915         /*
 916          * pointers go into the block we allocated,
 917          * memory is | beacon_data | head | tail |
 918          */
 919         new->head = ((u8 *) new) + sizeof(*new);
 920         new->tail = new->head + new_head_len;
 921         new->head_len = new_head_len;
 922         new->tail_len = new_tail_len;
 923
 924         /* copy in head */
 925         if (params->head)
 926                 memcpy(new->head, params->head, new_head_len);
 927         else
 928                 memcpy(new->head, old->head, new_head_len);
 929
 930         /* copy in optional tail */
 931         if (params->tail)
 932                 memcpy(new->tail, params->tail, new_tail_len);
 933         else
 934                 if (old)
 935                         memcpy(new->tail, old->tail, new_tail_len);
 936
 937         err = ieee80211_set_probe_resp(sdata, params->probe_resp,
 938                                        params->probe_resp_len);
 939         if (err < 0)
 940                 return err;
 941         if (err == 0)
 942                 changed |= BSS_CHANGED_AP_PROBE_RESP;
 943
 944         rcu_assign_pointer(sdata->u.ap.beacon, new);
 945
 946         if (old)
 947                 kfree_rcu(old, rcu_head);
 948
 949         return changed;
 950 }
 951
 952 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
 953                               struct cfg80211_ap_settings *params)
 954 {
 955         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 956         struct ieee80211_local *local = sdata->local;
 957         struct beacon_data *old;
 958         struct ieee80211_sub_if_data *vlan;
 959         u32 changed = BSS_CHANGED_BEACON_INT |
 960                       BSS_CHANGED_BEACON_ENABLED |
 961                       BSS_CHANGED_BEACON |
 962                       BSS_CHANGED_SSID |
 963                       BSS_CHANGED_P2P_PS;
 964         int err;
 965
 966         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 967         if (old)
 968                 return -EALREADY;
 969
 970         /* TODO: make hostapd tell us what it wants */
 971         sdata->smps_mode = IEEE80211_SMPS_OFF;
 972         sdata->needed_rx_chains = sdata->local->rx_chains;
 973
 974         mutex_lock(&local->mtx);
 975         sdata->radar_required = params->radar_required;
 976         err = ieee80211_vif_use_channel(sdata, &params->chandef,
 977                                         IEEE80211_CHANCTX_SHARED);
 978         mutex_unlock(&local->mtx);
 979         if (err)
 980                 return err;
 981         ieee80211_vif_copy_chanctx_to_vlans(sdata, false);
 982
 983         /*
 984          * Apply control port protocol, this allows us to
 985          * not encrypt dynamic WEP control frames.
 986          */
 987         sdata->control_port_protocol = params->crypto.control_port_ethertype;
 988         sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
 989         sdata->encrypt_headroom = ieee80211_cs_headroom(sdata->local,
 990                                                         &params->crypto,
 991                                                         sdata->vif.type);
 992
 993         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
 994                 vlan->control_port_protocol =
 995                         params->crypto.control_port_ethertype;
 996                 vlan->control_port_no_encrypt =
 997                         params->crypto.control_port_no_encrypt;
 998                 vlan->encrypt_headroom =
 999                         ieee80211_cs_headroom(sdata->local,
1000                                               &params->crypto,
1001                                               vlan->vif.type);
1002         }
1003
1004         sdata->vif.bss_conf.beacon_int = params->beacon_interval;
1005         sdata->vif.bss_conf.dtim_period = params->dtim_period;
1006         sdata->vif.bss_conf.enable_beacon = true;
1007
1008         sdata->vif.bss_conf.ssid_len = params->ssid_len;
1009         if (params->ssid_len)
1010                 memcpy(sdata->vif.bss_conf.ssid, params->ssid,
1011                        params->ssid_len);
1012         sdata->vif.bss_conf.hidden_ssid =
1013                 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
1014
1015         memset(&sdata->vif.bss_conf.p2p_noa_attr, 0,
1016                sizeof(sdata->vif.bss_conf.p2p_noa_attr));
1017         sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow =
1018                 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1019         if (params->p2p_opp_ps)
1020                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
1021                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
1022
1023         err = ieee80211_assign_beacon(sdata, &params->beacon);
1024         if (err < 0) {
1025                 ieee80211_vif_release_channel(sdata);
1026                 return err;
1027         }
1028         changed |= err;
1029
1030         err = drv_start_ap(sdata->local, sdata);
1031         if (err) {
1032                 old = sdata_dereference(sdata->u.ap.beacon, sdata);
1033
1034                 if (old)
1035                         kfree_rcu(old, rcu_head);
1036                 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
1037                 ieee80211_vif_release_channel(sdata);
1038                 return err;
1039         }
1040
1041         ieee80211_recalc_dtim(local, sdata);
1042         ieee80211_bss_info_change_notify(sdata, changed);
1043
1044         netif_carrier_on(dev);
1045         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1046                 netif_carrier_on(vlan->dev);
1047
1048         return 0;
1049 }
1050
1051 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
1052                                    struct cfg80211_beacon_data *params)
1053 {
1054         struct ieee80211_sub_if_data *sdata;
1055         struct beacon_data *old;
1056         int err;
1057
1058         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1059         sdata_assert_lock(sdata);
1060
1061         /* don't allow changing the beacon while CSA is in place - offset
1062          * of channel switch counter may change
1063          */
1064         if (sdata->vif.csa_active)
1065                 return -EBUSY;
1066
1067         old = sdata_dereference(sdata->u.ap.beacon, sdata);
1068         if (!old)
1069                 return -ENOENT;
1070
1071         err = ieee80211_assign_beacon(sdata, params);
1072         if (err < 0)
1073                 return err;
1074         ieee80211_bss_info_change_notify(sdata, err);
1075         return 0;
1076 }
1077
1078 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
1079 {
1080         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1081         struct ieee80211_sub_if_data *vlan;
1082         struct ieee80211_local *local = sdata->local;
1083         struct beacon_data *old_beacon;
1084         struct probe_resp *old_probe_resp;
1085         struct cfg80211_chan_def chandef;
1086
1087         sdata_assert_lock(sdata);
1088
1089         old_beacon = sdata_dereference(sdata->u.ap.beacon, sdata);
1090         if (!old_beacon)
1091                 return -ENOENT;
1092         old_probe_resp = sdata_dereference(sdata->u.ap.probe_resp, sdata);
1093
1094         /* abort any running channel switch */
1095         sdata->vif.csa_active = false;
1096         kfree(sdata->u.ap.next_beacon);
1097         sdata->u.ap.next_beacon = NULL;
1098
1099         /* turn off carrier for this interface and dependent VLANs */
1100         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1101                 netif_carrier_off(vlan->dev);
1102         netif_carrier_off(dev);
1103
1104         /* remove beacon and probe response */
1105         RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
1106         RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL);
1107         kfree_rcu(old_beacon, rcu_head);
1108         if (old_probe_resp)
1109                 kfree_rcu(old_probe_resp, rcu_head);
1110         sdata->u.ap.driver_smps_mode = IEEE80211_SMPS_OFF;
1111
1112         __sta_info_flush(sdata, true);
1113         ieee80211_free_keys(sdata, true);
1114
1115         sdata->vif.bss_conf.enable_beacon = false;
1116         sdata->vif.bss_conf.ssid_len = 0;
1117         clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state);
1118         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
1119
1120         if (sdata->wdev.cac_started) {
1121                 chandef = sdata->vif.bss_conf.chandef;
1122                 cancel_delayed_work_sync(&sdata->dfs_cac_timer_work);
1123                 cfg80211_cac_event(sdata->dev, &chandef,
1124                                    NL80211_RADAR_CAC_ABORTED,
1125                                    GFP_KERNEL);
1126         }
1127
1128         drv_stop_ap(sdata->local, sdata);
1129
1130         /* free all potentially still buffered bcast frames */
1131         local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf);
1132         skb_queue_purge(&sdata->u.ap.ps.bc_buf);
1133
1134         ieee80211_vif_copy_chanctx_to_vlans(sdata, true);
1135         mutex_lock(&local->mtx);
1136         ieee80211_vif_release_channel(sdata);
1137         mutex_unlock(&local->mtx);
1138
1139         return 0;
1140 }
1141
1142 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
1143 struct iapp_layer2_update {
1144         u8 da[ETH_ALEN];        /* broadcast */
1145         u8 sa[ETH_ALEN];        /* STA addr */
1146         __be16 len;             /* 6 */
1147         u8 dsap;                /* 0 */
1148         u8 ssap;                /* 0 */
1149         u8 control;
1150         u8 xid_info[3];
1151 } __packed;
1152
1153 static void ieee80211_send_layer2_update(struct sta_info *sta)
1154 {
1155         struct iapp_layer2_update *msg;
1156         struct sk_buff *skb;
1157
1158         /* Send Level 2 Update Frame to update forwarding tables in layer 2
1159          * bridge devices */
1160
1161         skb = dev_alloc_skb(sizeof(*msg));
1162         if (!skb)
1163                 return;
1164         msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
1165
1166         /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
1167          * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
1168
1169         eth_broadcast_addr(msg->da);
1170         memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
1171         msg->len = htons(6);
1172         msg->dsap = 0;
1173         msg->ssap = 0x01;       /* NULL LSAP, CR Bit: Response */
1174         msg->control = 0xaf;    /* XID response lsb.1111F101.
1175                                  * F=0 (no poll command; unsolicited frame) */
1176         msg->xid_info[0] = 0x81;        /* XID format identifier */
1177         msg->xid_info[1] = 1;   /* LLC types/classes: Type 1 LLC */
1178         msg->xid_info[2] = 0;   /* XID sender's receive window size (RW) */
1179
1180         skb->dev = sta->sdata->dev;
1181         skb->protocol = eth_type_trans(skb, sta->sdata->dev);
1182         memset(skb->cb, 0, sizeof(skb->cb));
1183         netif_rx_ni(skb);
1184 }
1185
1186 static int sta_apply_auth_flags(struct ieee80211_local *local,
1187                                 struct sta_info *sta,
1188                                 u32 mask, u32 set)
1189 {
1190         int ret;
1191
1192         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1193             set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1194             !test_sta_flag(sta, WLAN_STA_AUTH)) {
1195                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1196                 if (ret)
1197                         return ret;
1198         }
1199
1200         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1201             set & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1202             !test_sta_flag(sta, WLAN_STA_ASSOC)) {
1203                 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1204                 if (ret)
1205                         return ret;
1206         }
1207
1208         if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1209                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
1210                         ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
1211                 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1212                         ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1213                 else
1214                         ret = 0;
1215                 if (ret)
1216                         return ret;
1217         }
1218
1219         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1220             !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
1221             test_sta_flag(sta, WLAN_STA_ASSOC)) {
1222                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1223                 if (ret)
1224                         return ret;
1225         }
1226
1227         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1228             !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
1229             test_sta_flag(sta, WLAN_STA_AUTH)) {
1230                 ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
1231                 if (ret)
1232                         return ret;
1233         }
1234
1235         return 0;
1236 }
1237
1238 static int sta_apply_parameters(struct ieee80211_local *local,
1239                                 struct sta_info *sta,
1240                                 struct station_parameters *params)
1241 {
1242         int ret = 0;
1243         struct ieee80211_supported_band *sband;
1244         struct ieee80211_sub_if_data *sdata = sta->sdata;
1245         enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
1246         u32 mask, set;
1247
1248         sband = local->hw.wiphy->bands[band];
1249
1250         mask = params->sta_flags_mask;
1251         set = params->sta_flags_set;
1252
1253         if (ieee80211_vif_is_mesh(&sdata->vif)) {
1254                 /*
1255                  * In mesh mode, ASSOCIATED isn't part of the nl80211
1256                  * API but must follow AUTHENTICATED for driver state.
1257                  */
1258                 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1259                         mask |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1260                 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1261                         set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1262         } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1263                 /*
1264                  * TDLS -- everything follows authorized, but
1265                  * only becoming authorized is possible, not
1266                  * going back
1267                  */
1268                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1269                         set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1270                                BIT(NL80211_STA_FLAG_ASSOCIATED);
1271                         mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1272                                 BIT(NL80211_STA_FLAG_ASSOCIATED);
1273                 }
1274         }
1275
1276         ret = sta_apply_auth_flags(local, sta, mask, set);
1277         if (ret)
1278                 return ret;
1279
1280         if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
1281                 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
1282                         set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1283                 else
1284                         clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1285         }
1286
1287         if (mask & BIT(NL80211_STA_FLAG_WME)) {
1288                 if (set & BIT(NL80211_STA_FLAG_WME)) {
1289                         set_sta_flag(sta, WLAN_STA_WME);
1290                         sta->sta.wme = true;
1291                 } else {
1292                         clear_sta_flag(sta, WLAN_STA_WME);
1293                         sta->sta.wme = false;
1294                 }
1295         }
1296
1297         if (mask & BIT(NL80211_STA_FLAG_MFP)) {
1298                 if (set & BIT(NL80211_STA_FLAG_MFP))
1299                         set_sta_flag(sta, WLAN_STA_MFP);
1300                 else
1301                         clear_sta_flag(sta, WLAN_STA_MFP);
1302         }
1303
1304         if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
1305                 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1306                         set_sta_flag(sta, WLAN_STA_TDLS_PEER);
1307                 else
1308                         clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1309         }
1310
1311         if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
1312                 sta->sta.uapsd_queues = params->uapsd_queues;
1313                 sta->sta.max_sp = params->max_sp;
1314         }
1315
1316         /*
1317          * cfg80211 validates this (1-2007) and allows setting the AID
1318          * only when creating a new station entry
1319          */
1320         if (params->aid)
1321                 sta->sta.aid = params->aid;
1322
1323         /*
1324          * Some of the following updates would be racy if called on an
1325          * existing station, via ieee80211_change_station(). However,
1326          * all such changes are rejected by cfg80211 except for updates
1327          * changing the supported rates on an existing but not yet used
1328          * TDLS peer.
1329          */
1330
1331         if (params->listen_interval >= 0)
1332                 sta->listen_interval = params->listen_interval;
1333
1334         if (params->supported_rates) {
1335                 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1336                                          sband, params->supported_rates,
1337                                          params->supported_rates_len,
1338                                          &sta->sta.supp_rates[band]);
1339         }
1340
1341         if (params->ht_capa)
1342                 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1343                                                   params->ht_capa, sta);
1344
1345         if (params->vht_capa)
1346                 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
1347                                                     params->vht_capa, sta);
1348
1349         if (params->opmode_notif_used) {
1350                 enum ieee80211_band band =
1351                         ieee80211_get_sdata_band(sdata);
1352
1353                 /* returned value is only needed for rc update, but the
1354                  * rc isn't initialized here yet, so ignore it
1355                  */
1356                 __ieee80211_vht_handle_opmode(sdata, sta,
1357                                               params->opmode_notif,
1358                                               band, false);
1359         }
1360
1361         if (ieee80211_vif_is_mesh(&sdata->vif)) {
1362 #ifdef CONFIG_MAC80211_MESH
1363                 u32 changed = 0;
1364
1365                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) {
1366                         switch (params->plink_state) {
1367                         case NL80211_PLINK_ESTAB:
1368                                 if (sta->plink_state != NL80211_PLINK_ESTAB)
1369                                         changed = mesh_plink_inc_estab_count(
1370                                                         sdata);
1371                                 sta->plink_state = params->plink_state;
1372
1373                                 ieee80211_mps_sta_status_update(sta);
1374                                 changed |= ieee80211_mps_set_sta_local_pm(sta,
1375                                               sdata->u.mesh.mshcfg.power_mode);
1376                                 break;
1377                         case NL80211_PLINK_LISTEN:
1378                         case NL80211_PLINK_BLOCKED:
1379                         case NL80211_PLINK_OPN_SNT:
1380                         case NL80211_PLINK_OPN_RCVD:
1381                         case NL80211_PLINK_CNF_RCVD:
1382                         case NL80211_PLINK_HOLDING:
1383                                 if (sta->plink_state == NL80211_PLINK_ESTAB)
1384                                         changed = mesh_plink_dec_estab_count(
1385                                                         sdata);
1386                                 sta->plink_state = params->plink_state;
1387
1388                                 ieee80211_mps_sta_status_update(sta);
1389                                 changed |= ieee80211_mps_set_sta_local_pm(sta,
1390                                                 NL80211_MESH_POWER_UNKNOWN);
1391                                 break;
1392                         default:
1393                                 /*  nothing  */
1394                                 break;
1395                         }
1396                 }
1397
1398                 switch (params->plink_action) {
1399                 case NL80211_PLINK_ACTION_NO_ACTION:
1400                         /* nothing */
1401                         break;
1402                 case NL80211_PLINK_ACTION_OPEN:
1403                         changed |= mesh_plink_open(sta);
1404                         break;
1405                 case NL80211_PLINK_ACTION_BLOCK:
1406                         changed |= mesh_plink_block(sta);
1407                         break;
1408                 }
1409
1410                 if (params->local_pm)
1411                         changed |=
1412                               ieee80211_mps_set_sta_local_pm(sta,
1413                                                              params->local_pm);
1414                 ieee80211_mbss_info_change_notify(sdata, changed);
1415 #endif
1416         }
1417
1418         return 0;
1419 }
1420
1421 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1422                                  u8 *mac, struct station_parameters *params)
1423 {
1424         struct ieee80211_local *local = wiphy_priv(wiphy);
1425         struct sta_info *sta;
1426         struct ieee80211_sub_if_data *sdata;
1427         int err;
1428         int layer2_update;
1429
1430         if (params->vlan) {
1431                 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1432
1433                 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1434                     sdata->vif.type != NL80211_IFTYPE_AP)
1435                         return -EINVAL;
1436         } else
1437                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1438
1439         if (ether_addr_equal(mac, sdata->vif.addr))
1440                 return -EINVAL;
1441
1442         if (is_multicast_ether_addr(mac))
1443                 return -EINVAL;
1444
1445         sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
1446         if (!sta)
1447                 return -ENOMEM;
1448
1449         /*
1450          * defaults -- if userspace wants something else we'll
1451          * change it accordingly in sta_apply_parameters()
1452          */
1453         if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) {
1454                 sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
1455                 sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC);
1456         }
1457
1458         err = sta_apply_parameters(local, sta, params);
1459         if (err) {
1460                 sta_info_free(local, sta);
1461                 return err;
1462         }
1463
1464         /*
1465          * for TDLS, rate control should be initialized only when
1466          * rates are known and station is marked authorized
1467          */
1468         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER))
1469                 rate_control_rate_init(sta);
1470
1471         layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
1472                 sdata->vif.type == NL80211_IFTYPE_AP;
1473
1474         err = sta_info_insert_rcu(sta);
1475         if (err) {
1476                 rcu_read_unlock();
1477                 return err;
1478         }
1479
1480         if (layer2_update)
1481                 ieee80211_send_layer2_update(sta);
1482
1483         rcu_read_unlock();
1484
1485         return 0;
1486 }
1487
1488 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1489                                  u8 *mac)
1490 {
1491         struct ieee80211_sub_if_data *sdata;
1492
1493         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1494
1495         if (mac)
1496                 return sta_info_destroy_addr_bss(sdata, mac);
1497
1498         sta_info_flush(sdata);
1499         return 0;
1500 }
1501
1502 static int ieee80211_change_station(struct wiphy *wiphy,
1503                                     struct net_device *dev, u8 *mac,
1504                                     struct station_parameters *params)
1505 {
1506         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1507         struct ieee80211_local *local = wiphy_priv(wiphy);
1508         struct sta_info *sta;
1509         struct ieee80211_sub_if_data *vlansdata;
1510         enum cfg80211_station_type statype;
1511         int err;
1512
1513         mutex_lock(&local->sta_mtx);
1514
1515         sta = sta_info_get_bss(sdata, mac);
1516         if (!sta) {
1517                 err = -ENOENT;
1518                 goto out_err;
1519         }
1520
1521         switch (sdata->vif.type) {
1522         case NL80211_IFTYPE_MESH_POINT:
1523                 if (sdata->u.mesh.user_mpm)
1524                         statype = CFG80211_STA_MESH_PEER_USER;
1525                 else
1526                         statype = CFG80211_STA_MESH_PEER_KERNEL;
1527                 break;
1528         case NL80211_IFTYPE_ADHOC:
1529                 statype = CFG80211_STA_IBSS;
1530                 break;
1531         case NL80211_IFTYPE_STATION:
1532                 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1533                         statype = CFG80211_STA_AP_STA;
1534                         break;
1535                 }
1536                 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1537                         statype = CFG80211_STA_TDLS_PEER_ACTIVE;
1538                 else
1539                         statype = CFG80211_STA_TDLS_PEER_SETUP;
1540                 break;
1541         case NL80211_IFTYPE_AP:
1542         case NL80211_IFTYPE_AP_VLAN:
1543                 statype = CFG80211_STA_AP_CLIENT;
1544                 break;
1545         default:
1546                 err = -EOPNOTSUPP;
1547                 goto out_err;
1548         }
1549
1550         err = cfg80211_check_station_change(wiphy, params, statype);
1551         if (err)
1552                 goto out_err;
1553
1554         if (params->vlan && params->vlan != sta->sdata->dev) {
1555                 bool prev_4addr = false;
1556                 bool new_4addr = false;
1557
1558                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1559
1560                 if (params->vlan->ieee80211_ptr->use_4addr) {
1561                         if (vlansdata->u.vlan.sta) {
1562                                 err = -EBUSY;
1563                                 goto out_err;
1564                         }
1565
1566                         rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1567                         new_4addr = true;
1568                 }
1569
1570                 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
1571                     sta->sdata->u.vlan.sta) {
1572                         rcu_assign_pointer(sta->sdata->u.vlan.sta, NULL);
1573                         prev_4addr = true;
1574                 }
1575
1576                 sta->sdata = vlansdata;
1577
1578                 if (sta->sta_state == IEEE80211_STA_AUTHORIZED &&
1579                     prev_4addr != new_4addr) {
1580                         if (new_4addr)
1581                                 atomic_dec(&sta->sdata->bss->num_mcast_sta);
1582                         else
1583                                 atomic_inc(&sta->sdata->bss->num_mcast_sta);
1584                 }
1585
1586                 ieee80211_send_layer2_update(sta);
1587         }
1588
1589         err = sta_apply_parameters(local, sta, params);
1590         if (err)
1591                 goto out_err;
1592
1593         /* When peer becomes authorized, init rate control as well */
1594         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1595             test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1596                 rate_control_rate_init(sta);
1597
1598         mutex_unlock(&local->sta_mtx);
1599
1600         if ((sdata->vif.type == NL80211_IFTYPE_AP ||
1601              sdata->vif.type == NL80211_IFTYPE_AP_VLAN) &&
1602             sta->known_smps_mode != sta->sdata->bss->req_smps &&
1603             test_sta_flag(sta, WLAN_STA_AUTHORIZED) &&
1604             sta_info_tx_streams(sta) != 1) {
1605                 ht_dbg(sta->sdata,
1606                        "%pM just authorized and MIMO capable - update SMPS\n",
1607                        sta->sta.addr);
1608                 ieee80211_send_smps_action(sta->sdata,
1609                         sta->sdata->bss->req_smps,
1610                         sta->sta.addr,
1611                         sta->sdata->vif.bss_conf.bssid);
1612         }
1613
1614         if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1615             params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1616                 ieee80211_recalc_ps(local, -1);
1617                 ieee80211_recalc_ps_vif(sdata);
1618         }
1619
1620         return 0;
1621 out_err:
1622         mutex_unlock(&local->sta_mtx);
1623         return err;
1624 }
1625
1626 #ifdef CONFIG_MAC80211_MESH
1627 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1628                                  u8 *dst, u8 *next_hop)
1629 {
1630         struct ieee80211_sub_if_data *sdata;
1631         struct mesh_path *mpath;
1632         struct sta_info *sta;
1633
1634         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1635
1636         rcu_read_lock();
1637         sta = sta_info_get(sdata, next_hop);
1638         if (!sta) {
1639                 rcu_read_unlock();
1640                 return -ENOENT;
1641         }
1642
1643         mpath = mesh_path_add(sdata, dst);
1644         if (IS_ERR(mpath)) {
1645                 rcu_read_unlock();
1646                 return PTR_ERR(mpath);
1647         }
1648
1649         mesh_path_fix_nexthop(mpath, sta);
1650
1651         rcu_read_unlock();
1652         return 0;
1653 }
1654
1655 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1656                                u8 *dst)
1657 {
1658         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1659
1660         if (dst)
1661                 return mesh_path_del(sdata, dst);
1662
1663         mesh_path_flush_by_iface(sdata);
1664         return 0;
1665 }
1666
1667 static int ieee80211_change_mpath(struct wiphy *wiphy,
1668                                     struct net_device *dev,
1669                                     u8 *dst, u8 *next_hop)
1670 {
1671         struct ieee80211_sub_if_data *sdata;
1672         struct mesh_path *mpath;
1673         struct sta_info *sta;
1674
1675         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1676
1677         rcu_read_lock();
1678
1679         sta = sta_info_get(sdata, next_hop);
1680         if (!sta) {
1681                 rcu_read_unlock();
1682                 return -ENOENT;
1683         }
1684
1685         mpath = mesh_path_lookup(sdata, dst);
1686         if (!mpath) {
1687                 rcu_read_unlock();
1688                 return -ENOENT;
1689         }
1690
1691         mesh_path_fix_nexthop(mpath, sta);
1692
1693         rcu_read_unlock();
1694         return 0;
1695 }
1696
1697 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1698                             struct mpath_info *pinfo)
1699 {
1700         struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1701
1702         if (next_hop_sta)
1703                 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1704         else
1705                 memset(next_hop, 0, ETH_ALEN);
1706
1707         memset(pinfo, 0, sizeof(*pinfo));
1708
1709         pinfo->generation = mesh_paths_generation;
1710
1711         pinfo->filled = MPATH_INFO_FRAME_QLEN |
1712                         MPATH_INFO_SN |
1713                         MPATH_INFO_METRIC |
1714                         MPATH_INFO_EXPTIME |
1715                         MPATH_INFO_DISCOVERY_TIMEOUT |
1716                         MPATH_INFO_DISCOVERY_RETRIES |
1717                         MPATH_INFO_FLAGS;
1718
1719         pinfo->frame_qlen = mpath->frame_queue.qlen;
1720         pinfo->sn = mpath->sn;
1721         pinfo->metric = mpath->metric;
1722         if (time_before(jiffies, mpath->exp_time))
1723                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1724         pinfo->discovery_timeout =
1725                         jiffies_to_msecs(mpath->discovery_timeout);
1726         pinfo->discovery_retries = mpath->discovery_retries;
1727         if (mpath->flags & MESH_PATH_ACTIVE)
1728                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1729         if (mpath->flags & MESH_PATH_RESOLVING)
1730                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1731         if (mpath->flags & MESH_PATH_SN_VALID)
1732                 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1733         if (mpath->flags & MESH_PATH_FIXED)
1734                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1735         if (mpath->flags & MESH_PATH_RESOLVED)
1736                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
1737 }
1738
1739 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1740                                u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1741
1742 {
1743         struct ieee80211_sub_if_data *sdata;
1744         struct mesh_path *mpath;
1745
1746         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1747
1748         rcu_read_lock();
1749         mpath = mesh_path_lookup(sdata, dst);
1750         if (!mpath) {
1751                 rcu_read_unlock();
1752                 return -ENOENT;
1753         }
1754         memcpy(dst, mpath->dst, ETH_ALEN);
1755         mpath_set_pinfo(mpath, next_hop, pinfo);
1756         rcu_read_unlock();
1757         return 0;
1758 }
1759
1760 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1761                                  int idx, u8 *dst, u8 *next_hop,
1762                                  struct mpath_info *pinfo)
1763 {
1764         struct ieee80211_sub_if_data *sdata;
1765         struct mesh_path *mpath;
1766
1767         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1768
1769         rcu_read_lock();
1770         mpath = mesh_path_lookup_by_idx(sdata, idx);
1771         if (!mpath) {
1772                 rcu_read_unlock();
1773                 return -ENOENT;
1774         }
1775         memcpy(dst, mpath->dst, ETH_ALEN);
1776         mpath_set_pinfo(mpath, next_hop, pinfo);
1777         rcu_read_unlock();
1778         return 0;
1779 }
1780
1781 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1782                                 struct net_device *dev,
1783                                 struct mesh_config *conf)
1784 {
1785         struct ieee80211_sub_if_data *sdata;
1786         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1787
1788         memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1789         return 0;
1790 }
1791
1792 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1793 {
1794         return (mask >> (parm-1)) & 0x1;
1795 }
1796
1797 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1798                 const struct mesh_setup *setup)
1799 {
1800         u8 *new_ie;
1801         const u8 *old_ie;
1802         struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1803                                         struct ieee80211_sub_if_data, u.mesh);
1804
1805         /* allocate information elements */
1806         new_ie = NULL;
1807         old_ie = ifmsh->ie;
1808
1809         if (setup->ie_len) {
1810                 new_ie = kmemdup(setup->ie, setup->ie_len,
1811                                 GFP_KERNEL);
1812                 if (!new_ie)
1813                         return -ENOMEM;
1814         }
1815         ifmsh->ie_len = setup->ie_len;
1816         ifmsh->ie = new_ie;
1817         kfree(old_ie);
1818
1819         /* now copy the rest of the setup parameters */
1820         ifmsh->mesh_id_len = setup->mesh_id_len;
1821         memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1822         ifmsh->mesh_sp_id = setup->sync_method;
1823         ifmsh->mesh_pp_id = setup->path_sel_proto;
1824         ifmsh->mesh_pm_id = setup->path_metric;
1825         ifmsh->user_mpm = setup->user_mpm;
1826         ifmsh->mesh_auth_id = setup->auth_id;
1827         ifmsh->security = IEEE80211_MESH_SEC_NONE;
1828         if (setup->is_authenticated)
1829                 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1830         if (setup->is_secure)
1831                 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1832
1833         /* mcast rate setting in Mesh Node */
1834         memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1835                                                 sizeof(setup->mcast_rate));
1836         sdata->vif.bss_conf.basic_rates = setup->basic_rates;
1837
1838         sdata->vif.bss_conf.beacon_int = setup->beacon_interval;
1839         sdata->vif.bss_conf.dtim_period = setup->dtim_period;
1840
1841         return 0;
1842 }
1843
1844 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1845                                         struct net_device *dev, u32 mask,
1846                                         const struct mesh_config *nconf)
1847 {
1848         struct mesh_config *conf;
1849         struct ieee80211_sub_if_data *sdata;
1850         struct ieee80211_if_mesh *ifmsh;
1851
1852         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1853         ifmsh = &sdata->u.mesh;
1854
1855         /* Set the config options which we are interested in setting */
1856         conf = &(sdata->u.mesh.mshcfg);
1857         if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1858                 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1859         if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1860                 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1861         if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1862                 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1863         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1864                 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1865         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1866                 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1867         if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1868                 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1869         if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1870                 conf->element_ttl = nconf->element_ttl;
1871         if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) {
1872                 if (ifmsh->user_mpm)
1873                         return -EBUSY;
1874                 conf->auto_open_plinks = nconf->auto_open_plinks;
1875         }
1876         if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
1877                 conf->dot11MeshNbrOffsetMaxNeighbor =
1878                         nconf->dot11MeshNbrOffsetMaxNeighbor;
1879         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1880                 conf->dot11MeshHWMPmaxPREQretries =
1881                         nconf->dot11MeshHWMPmaxPREQretries;
1882         if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1883                 conf->path_refresh_time = nconf->path_refresh_time;
1884         if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1885                 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1886         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1887                 conf->dot11MeshHWMPactivePathTimeout =
1888                         nconf->dot11MeshHWMPactivePathTimeout;
1889         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1890                 conf->dot11MeshHWMPpreqMinInterval =
1891                         nconf->dot11MeshHWMPpreqMinInterval;
1892         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1893                 conf->dot11MeshHWMPperrMinInterval =
1894                         nconf->dot11MeshHWMPperrMinInterval;
1895         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1896                            mask))
1897                 conf->dot11MeshHWMPnetDiameterTraversalTime =
1898                         nconf->dot11MeshHWMPnetDiameterTraversalTime;
1899         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1900                 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1901                 ieee80211_mesh_root_setup(ifmsh);
1902         }
1903         if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1904                 /* our current gate announcement implementation rides on root
1905                  * announcements, so require this ifmsh to also be a root node
1906                  * */
1907                 if (nconf->dot11MeshGateAnnouncementProtocol &&
1908                     !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
1909                         conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
1910                         ieee80211_mesh_root_setup(ifmsh);
1911                 }
1912                 conf->dot11MeshGateAnnouncementProtocol =
1913                         nconf->dot11MeshGateAnnouncementProtocol;
1914         }
1915         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
1916                 conf->dot11MeshHWMPRannInterval =
1917                         nconf->dot11MeshHWMPRannInterval;
1918         if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
1919                 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1920         if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
1921                 /* our RSSI threshold implementation is supported only for
1922                  * devices that report signal in dBm.
1923                  */
1924                 if (!(sdata->local->hw.flags & IEEE80211_HW_SIGNAL_DBM))
1925                         return -ENOTSUPP;
1926                 conf->rssi_threshold = nconf->rssi_threshold;
1927         }
1928         if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
1929                 conf->ht_opmode = nconf->ht_opmode;
1930                 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
1931                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1932         }
1933         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
1934                 conf->dot11MeshHWMPactivePathToRootTimeout =
1935                         nconf->dot11MeshHWMPactivePathToRootTimeout;
1936         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
1937                 conf->dot11MeshHWMProotInterval =
1938                         nconf->dot11MeshHWMProotInterval;
1939         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
1940                 conf->dot11MeshHWMPconfirmationInterval =
1941                         nconf->dot11MeshHWMPconfirmationInterval;
1942         if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) {
1943                 conf->power_mode = nconf->power_mode;
1944                 ieee80211_mps_local_status_update(sdata);
1945         }
1946         if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask))
1947                 conf->dot11MeshAwakeWindowDuration =
1948                         nconf->dot11MeshAwakeWindowDuration;
1949         if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask))
1950                 conf->plink_timeout = nconf->plink_timeout;
1951         ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON);
1952         return 0;
1953 }
1954
1955 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1956                                const struct mesh_config *conf,
1957                                const struct mesh_setup *setup)
1958 {
1959         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1960         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1961         int err;
1962
1963         memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1964         err = copy_mesh_setup(ifmsh, setup);
1965         if (err)
1966                 return err;
1967
1968         /* can mesh use other SMPS modes? */
1969         sdata->smps_mode = IEEE80211_SMPS_OFF;
1970         sdata->needed_rx_chains = sdata->local->rx_chains;
1971
1972         mutex_lock(&sdata->local->mtx);
1973         err = ieee80211_vif_use_channel(sdata, &setup->chandef,
1974                                         IEEE80211_CHANCTX_SHARED);
1975         mutex_unlock(&sdata->local->mtx);
1976         if (err)
1977                 return err;
1978
1979         return ieee80211_start_mesh(sdata);
1980 }
1981
1982 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1983 {
1984         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1985
1986         ieee80211_stop_mesh(sdata);
1987         mutex_lock(&sdata->local->mtx);
1988         ieee80211_vif_release_channel(sdata);
1989         mutex_unlock(&sdata->local->mtx);
1990
1991         return 0;
1992 }
1993 #endif
1994
1995 static int ieee80211_change_bss(struct wiphy *wiphy,
1996                                 struct net_device *dev,
1997                                 struct bss_parameters *params)
1998 {
1999         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2000         enum ieee80211_band band;
2001         u32 changed = 0;
2002
2003         if (!sdata_dereference(sdata->u.ap.beacon, sdata))
2004                 return -ENOENT;
2005
2006         band = ieee80211_get_sdata_band(sdata);
2007
2008         if (params->use_cts_prot >= 0) {
2009                 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
2010                 changed |= BSS_CHANGED_ERP_CTS_PROT;
2011         }
2012         if (params->use_short_preamble >= 0) {
2013                 sdata->vif.bss_conf.use_short_preamble =
2014                         params->use_short_preamble;
2015                 changed |= BSS_CHANGED_ERP_PREAMBLE;
2016         }
2017
2018         if (!sdata->vif.bss_conf.use_short_slot &&
2019             band == IEEE80211_BAND_5GHZ) {
2020                 sdata->vif.bss_conf.use_short_slot = true;
2021                 changed |= BSS_CHANGED_ERP_SLOT;
2022         }
2023
2024         if (params->use_short_slot_time >= 0) {
2025                 sdata->vif.bss_conf.use_short_slot =
2026                         params->use_short_slot_time;
2027                 changed |= BSS_CHANGED_ERP_SLOT;
2028         }
2029
2030         if (params->basic_rates) {
2031                 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
2032                                          wiphy->bands[band],
2033                                          params->basic_rates,
2034                                          params->basic_rates_len,
2035                                          &sdata->vif.bss_conf.basic_rates);
2036                 changed |= BSS_CHANGED_BASIC_RATES;
2037         }
2038
2039         if (params->ap_isolate >= 0) {
2040                 if (params->ap_isolate)
2041                         sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
2042                 else
2043                         sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
2044         }
2045
2046         if (params->ht_opmode >= 0) {
2047                 sdata->vif.bss_conf.ht_operation_mode =
2048                         (u16) params->ht_opmode;
2049                 changed |= BSS_CHANGED_HT;
2050         }
2051
2052         if (params->p2p_ctwindow >= 0) {
2053                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
2054                                         ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
2055                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
2056                         params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
2057                 changed |= BSS_CHANGED_P2P_PS;
2058         }
2059
2060         if (params->p2p_opp_ps > 0) {
2061                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
2062                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
2063                 changed |= BSS_CHANGED_P2P_PS;
2064         } else if (params->p2p_opp_ps == 0) {
2065                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
2066                                         ~IEEE80211_P2P_OPPPS_ENABLE_BIT;
2067                 changed |= BSS_CHANGED_P2P_PS;
2068         }
2069
2070         ieee80211_bss_info_change_notify(sdata, changed);
2071
2072         return 0;
2073 }
2074
2075 static int ieee80211_set_txq_params(struct wiphy *wiphy,
2076                                     struct net_device *dev,
2077                                     struct ieee80211_txq_params *params)
2078 {
2079         struct ieee80211_local *local = wiphy_priv(wiphy);
2080         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2081         struct ieee80211_tx_queue_params p;
2082
2083         if (!local->ops->conf_tx)
2084                 return -EOPNOTSUPP;
2085
2086         if (local->hw.queues < IEEE80211_NUM_ACS)
2087                 return -EOPNOTSUPP;
2088
2089         memset(&p, 0, sizeof(p));
2090         p.aifs = params->aifs;
2091         p.cw_max = params->cwmax;
2092         p.cw_min = params->cwmin;
2093         p.txop = params->txop;
2094
2095         /*
2096          * Setting tx queue params disables u-apsd because it's only
2097          * called in master mode.
2098          */
2099         p.uapsd = false;
2100
2101         sdata->tx_conf[params->ac] = p;
2102         if (drv_conf_tx(local, sdata, params->ac, &p)) {
2103                 wiphy_debug(local->hw.wiphy,
2104                             "failed to set TX queue parameters for AC %d\n",
2105                             params->ac);
2106                 return -EINVAL;
2107         }
2108
2109         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
2110
2111         return 0;
2112 }
2113
2114 #ifdef CONFIG_PM
2115 static int ieee80211_suspend(struct wiphy *wiphy,
2116                              struct cfg80211_wowlan *wowlan)
2117 {
2118         return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
2119 }
2120
2121 static int ieee80211_resume(struct wiphy *wiphy)
2122 {
2123         return __ieee80211_resume(wiphy_priv(wiphy));
2124 }
2125 #else
2126 #define ieee80211_suspend NULL
2127 #define ieee80211_resume NULL
2128 #endif
2129
2130 static int ieee80211_scan(struct wiphy *wiphy,
2131                           struct cfg80211_scan_request *req)
2132 {
2133         struct ieee80211_sub_if_data *sdata;
2134
2135         sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
2136
2137         switch (ieee80211_vif_type_p2p(&sdata->vif)) {
2138         case NL80211_IFTYPE_STATION:
2139         case NL80211_IFTYPE_ADHOC:
2140         case NL80211_IFTYPE_MESH_POINT:
2141         case NL80211_IFTYPE_P2P_CLIENT:
2142         case NL80211_IFTYPE_P2P_DEVICE:
2143                 break;
2144         case NL80211_IFTYPE_P2P_GO:
2145                 if (sdata->local->ops->hw_scan)
2146                         break;
2147                 /*
2148                  * FIXME: implement NoA while scanning in software,
2149                  * for now fall through to allow scanning only when
2150                  * beaconing hasn't been configured yet
2151                  */
2152         case NL80211_IFTYPE_AP:
2153                 /*
2154                  * If the scan has been forced (and the driver supports
2155                  * forcing), don't care about being beaconing already.
2156                  * This will create problems to the attached stations (e.g. all
2157                  * the  frames sent while scanning on other channel will be
2158                  * lost)
2159                  */
2160                 if (sdata->u.ap.beacon &&
2161                     (!(wiphy->features & NL80211_FEATURE_AP_SCAN) ||
2162                      !(req->flags & NL80211_SCAN_FLAG_AP)))
2163                         return -EOPNOTSUPP;
2164                 break;
2165         default:
2166                 return -EOPNOTSUPP;
2167         }
2168
2169         return ieee80211_request_scan(sdata, req);
2170 }
2171
2172 static int
2173 ieee80211_sched_scan_start(struct wiphy *wiphy,
2174                            struct net_device *dev,
2175                            struct cfg80211_sched_scan_request *req)
2176 {
2177         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2178
2179         if (!sdata->local->ops->sched_scan_start)
2180                 return -EOPNOTSUPP;
2181
2182         return ieee80211_request_sched_scan_start(sdata, req);
2183 }
2184
2185 static int
2186 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
2187 {
2188         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2189
2190         if (!sdata->local->ops->sched_scan_stop)
2191                 return -EOPNOTSUPP;
2192
2193         return ieee80211_request_sched_scan_stop(sdata);
2194 }
2195
2196 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
2197                           struct cfg80211_auth_request *req)
2198 {
2199         return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2200 }
2201
2202 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
2203                            struct cfg80211_assoc_request *req)
2204 {
2205         return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2206 }
2207
2208 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
2209                             struct cfg80211_deauth_request *req)
2210 {
2211         return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2212 }
2213
2214 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
2215                               struct cfg80211_disassoc_request *req)
2216 {
2217         return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2218 }
2219
2220 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2221                                struct cfg80211_ibss_params *params)
2222 {
2223         return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
2224 }
2225
2226 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2227 {
2228         return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2229 }
2230
2231 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev,
2232                                     int rate[IEEE80211_NUM_BANDS])
2233 {
2234         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2235
2236         memcpy(sdata->vif.bss_conf.mcast_rate, rate,
2237                sizeof(int) * IEEE80211_NUM_BANDS);
2238
2239         return 0;
2240 }
2241
2242 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
2243 {
2244         struct ieee80211_local *local = wiphy_priv(wiphy);
2245         int err;
2246
2247         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
2248                 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
2249
2250                 if (err)
2251                         return err;
2252         }
2253
2254         if (changed & WIPHY_PARAM_COVERAGE_CLASS) {
2255                 err = drv_set_coverage_class(local, wiphy->coverage_class);
2256
2257                 if (err)
2258                         return err;
2259         }
2260
2261         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
2262                 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
2263
2264                 if (err)
2265                         return err;
2266         }
2267
2268         if (changed & WIPHY_PARAM_RETRY_SHORT) {
2269                 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY)
2270                         return -EINVAL;
2271                 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
2272         }
2273         if (changed & WIPHY_PARAM_RETRY_LONG) {
2274                 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY)
2275                         return -EINVAL;
2276                 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
2277         }
2278         if (changed &
2279             (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
2280                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
2281
2282         return 0;
2283 }
2284
2285 static int ieee80211_set_tx_power(struct wiphy *wiphy,
2286                                   struct wireless_dev *wdev,
2287                                   enum nl80211_tx_power_setting type, int mbm)
2288 {
2289         struct ieee80211_local *local = wiphy_priv(wiphy);
2290         struct ieee80211_sub_if_data *sdata;
2291
2292         if (wdev) {
2293                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2294
2295                 switch (type) {
2296                 case NL80211_TX_POWER_AUTOMATIC:
2297                         sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2298                         break;
2299                 case NL80211_TX_POWER_LIMITED:
2300                 case NL80211_TX_POWER_FIXED:
2301                         if (mbm < 0 || (mbm % 100))
2302                                 return -EOPNOTSUPP;
2303                         sdata->user_power_level = MBM_TO_DBM(mbm);
2304                         break;
2305                 }
2306
2307                 ieee80211_recalc_txpower(sdata);
2308
2309                 return 0;
2310         }
2311
2312         switch (type) {
2313         case NL80211_TX_POWER_AUTOMATIC:
2314                 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2315                 break;
2316         case NL80211_TX_POWER_LIMITED:
2317         case NL80211_TX_POWER_FIXED:
2318                 if (mbm < 0 || (mbm % 100))
2319                         return -EOPNOTSUPP;
2320                 local->user_power_level = MBM_TO_DBM(mbm);
2321                 break;
2322         }
2323
2324         mutex_lock(&local->iflist_mtx);
2325         list_for_each_entry(sdata, &local->interfaces, list)
2326                 sdata->user_power_level = local->user_power_level;
2327         list_for_each_entry(sdata, &local->interfaces, list)
2328                 ieee80211_recalc_txpower(sdata);
2329         mutex_unlock(&local->iflist_mtx);
2330
2331         return 0;
2332 }
2333
2334 static int ieee80211_get_tx_power(struct wiphy *wiphy,
2335                                   struct wireless_dev *wdev,
2336                                   int *dbm)
2337 {
2338         struct ieee80211_local *local = wiphy_priv(wiphy);
2339         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2340
2341         if (!local->use_chanctx)
2342                 *dbm = local->hw.conf.power_level;
2343         else
2344                 *dbm = sdata->vif.bss_conf.txpower;
2345
2346         return 0;
2347 }
2348
2349 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
2350                                   const u8 *addr)
2351 {
2352         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2353
2354         memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
2355
2356         return 0;
2357 }
2358
2359 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
2360 {
2361         struct ieee80211_local *local = wiphy_priv(wiphy);
2362
2363         drv_rfkill_poll(local);
2364 }
2365
2366 #ifdef CONFIG_NL80211_TESTMODE
2367 static int ieee80211_testmode_cmd(struct wiphy *wiphy,
2368                                   struct wireless_dev *wdev,
2369                                   void *data, int len)
2370 {
2371         struct ieee80211_local *local = wiphy_priv(wiphy);
2372         struct ieee80211_vif *vif = NULL;
2373
2374         if (!local->ops->testmode_cmd)
2375                 return -EOPNOTSUPP;
2376
2377         if (wdev) {
2378                 struct ieee80211_sub_if_data *sdata;
2379
2380                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2381                 if (sdata->flags & IEEE80211_SDATA_IN_DRIVER)
2382                         vif = &sdata->vif;
2383         }
2384
2385         return local->ops->testmode_cmd(&local->hw, vif, data, len);
2386 }
2387
2388 static int ieee80211_testmode_dump(struct wiphy *wiphy,
2389                                    struct sk_buff *skb,
2390                                    struct netlink_callback *cb,
2391                                    void *data, int len)
2392 {
2393         struct ieee80211_local *local = wiphy_priv(wiphy);
2394
2395         if (!local->ops->testmode_dump)
2396                 return -EOPNOTSUPP;
2397
2398         return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
2399 }
2400 #endif
2401
2402 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
2403                                 enum ieee80211_smps_mode smps_mode)
2404 {
2405         struct sta_info *sta;
2406         enum ieee80211_smps_mode old_req;
2407         int i;
2408
2409         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP))
2410                 return -EINVAL;
2411
2412         if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2413                 return 0;
2414
2415         old_req = sdata->u.ap.req_smps;
2416         sdata->u.ap.req_smps = smps_mode;
2417
2418         /* AUTOMATIC doesn't mean much for AP - don't allow it */
2419         if (old_req == smps_mode ||
2420             smps_mode == IEEE80211_SMPS_AUTOMATIC)
2421                 return 0;
2422
2423          /* If no associated stations, there's no need to do anything */
2424         if (!atomic_read(&sdata->u.ap.num_mcast_sta)) {
2425                 sdata->smps_mode = smps_mode;
2426                 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2427                 return 0;
2428         }
2429
2430         ht_dbg(sdata,
2431                "SMSP %d requested in AP mode, sending Action frame to %d stations\n",
2432                smps_mode, atomic_read(&sdata->u.ap.num_mcast_sta));
2433
2434         mutex_lock(&sdata->local->sta_mtx);
2435         for (i = 0; i < STA_HASH_SIZE; i++) {
2436                 for (sta = rcu_dereference_protected(sdata->local->sta_hash[i],
2437                                 lockdep_is_held(&sdata->local->sta_mtx));
2438                      sta;
2439                      sta = rcu_dereference_protected(sta->hnext,
2440                                 lockdep_is_held(&sdata->local->sta_mtx))) {
2441                         /*
2442                          * Only stations associated to our AP and
2443                          * associated VLANs
2444                          */
2445                         if (sta->sdata->bss != &sdata->u.ap)
2446                                 continue;
2447
2448                         /* This station doesn't support MIMO - skip it */
2449                         if (sta_info_tx_streams(sta) == 1)
2450                                 continue;
2451
2452                         /*
2453                          * Don't wake up a STA just to send the action frame
2454                          * unless we are getting more restrictive.
2455                          */
2456                         if (test_sta_flag(sta, WLAN_STA_PS_STA) &&
2457                             !ieee80211_smps_is_restrictive(sta->known_smps_mode,
2458                                                            smps_mode)) {
2459                                 ht_dbg(sdata,
2460                                        "Won't send SMPS to sleeping STA %pM\n",
2461                                        sta->sta.addr);
2462                                 continue;
2463                         }
2464
2465                         /*
2466                          * If the STA is not authorized, wait until it gets
2467                          * authorized and the action frame will be sent then.
2468                          */
2469                         if (!test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2470                                 continue;
2471
2472                         ht_dbg(sdata, "Sending SMPS to %pM\n", sta->sta.addr);
2473                         ieee80211_send_smps_action(sdata, smps_mode,
2474                                                    sta->sta.addr,
2475                                                    sdata->vif.bss_conf.bssid);
2476                 }
2477         }
2478         mutex_unlock(&sdata->local->sta_mtx);
2479
2480         sdata->smps_mode = smps_mode;
2481         ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2482
2483         return 0;
2484 }
2485
2486 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
2487                                  enum ieee80211_smps_mode smps_mode)
2488 {
2489         const u8 *ap;
2490         enum ieee80211_smps_mode old_req;
2491         int err;
2492
2493         lockdep_assert_held(&sdata->wdev.mtx);
2494
2495         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION))
2496                 return -EINVAL;
2497
2498         old_req = sdata->u.mgd.req_smps;
2499         sdata->u.mgd.req_smps = smps_mode;
2500
2501         if (old_req == smps_mode &&
2502             smps_mode != IEEE80211_SMPS_AUTOMATIC)
2503                 return 0;
2504
2505         /*
2506          * If not associated, or current association is not an HT
2507          * association, there's no need to do anything, just store
2508          * the new value until we associate.
2509          */
2510         if (!sdata->u.mgd.associated ||
2511             sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2512                 return 0;
2513
2514         ap = sdata->u.mgd.associated->bssid;
2515
2516         if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
2517                 if (sdata->u.mgd.powersave)
2518                         smps_mode = IEEE80211_SMPS_DYNAMIC;
2519                 else
2520                         smps_mode = IEEE80211_SMPS_OFF;
2521         }
2522
2523         /* send SM PS frame to AP */
2524         err = ieee80211_send_smps_action(sdata, smps_mode,
2525                                          ap, ap);
2526         if (err)
2527                 sdata->u.mgd.req_smps = old_req;
2528
2529         return err;
2530 }
2531
2532 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2533                                     bool enabled, int timeout)
2534 {
2535         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2536         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2537
2538         if (sdata->vif.type != NL80211_IFTYPE_STATION)
2539                 return -EOPNOTSUPP;
2540
2541         if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
2542                 return -EOPNOTSUPP;
2543
2544         if (enabled == sdata->u.mgd.powersave &&
2545             timeout == local->dynamic_ps_forced_timeout)
2546                 return 0;
2547
2548         sdata->u.mgd.powersave = enabled;
2549         local->dynamic_ps_forced_timeout = timeout;
2550
2551         /* no change, but if automatic follow powersave */
2552         sdata_lock(sdata);
2553         __ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps);
2554         sdata_unlock(sdata);
2555
2556         if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
2557                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2558
2559         ieee80211_recalc_ps(local, -1);
2560         ieee80211_recalc_ps_vif(sdata);
2561
2562         return 0;
2563 }
2564
2565 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
2566                                          struct net_device *dev,
2567                                          s32 rssi_thold, u32 rssi_hyst)
2568 {
2569         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2570         struct ieee80211_vif *vif = &sdata->vif;
2571         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2572
2573         if (rssi_thold == bss_conf->cqm_rssi_thold &&
2574             rssi_hyst == bss_conf->cqm_rssi_hyst)
2575                 return 0;
2576
2577         bss_conf->cqm_rssi_thold = rssi_thold;
2578         bss_conf->cqm_rssi_hyst = rssi_hyst;
2579
2580         /* tell the driver upon association, unless already associated */
2581         if (sdata->u.mgd.associated &&
2582             sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2583                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2584
2585         return 0;
2586 }
2587
2588 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
2589                                       struct net_device *dev,
2590                                       const u8 *addr,
2591                                       const struct cfg80211_bitrate_mask *mask)
2592 {
2593         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2594         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2595         int i, ret;
2596
2597         if (!ieee80211_sdata_running(sdata))
2598                 return -ENETDOWN;
2599
2600         if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) {
2601                 ret = drv_set_bitrate_mask(local, sdata, mask);
2602                 if (ret)
2603                         return ret;
2604         }
2605
2606         for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
2607                 struct ieee80211_supported_band *sband = wiphy->bands[i];
2608                 int j;
2609
2610                 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2611                 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs,
2612                        sizeof(mask->control[i].ht_mcs));
2613
2614                 sdata->rc_has_mcs_mask[i] = false;
2615                 if (!sband)
2616                         continue;
2617
2618                 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++)
2619                         if (~sdata->rc_rateidx_mcs_mask[i][j]) {
2620                                 sdata->rc_has_mcs_mask[i] = true;
2621                                 break;
2622                         }
2623         }
2624
2625         return 0;
2626 }
2627
2628 static int ieee80211_start_roc_work(struct ieee80211_local *local,
2629                                     struct ieee80211_sub_if_data *sdata,
2630                                     struct ieee80211_channel *channel,
2631                                     unsigned int duration, u64 *cookie,
2632                                     struct sk_buff *txskb,
2633                                     enum ieee80211_roc_type type)
2634 {
2635         struct ieee80211_roc_work *roc, *tmp;
2636         bool queued = false;
2637         int ret;
2638
2639         lockdep_assert_held(&local->mtx);
2640
2641         if (local->use_chanctx && !local->ops->remain_on_channel)
2642                 return -EOPNOTSUPP;
2643
2644         roc = kzalloc(sizeof(*roc), GFP_KERNEL);
2645         if (!roc)
2646                 return -ENOMEM;
2647
2648         /*
2649          * If the duration is zero, then the driver
2650          * wouldn't actually do anything. Set it to
2651          * 10 for now.
2652          *
2653          * TODO: cancel the off-channel operation
2654          *       when we get the SKB's TX status and
2655          *       the wait time was zero before.
2656          */
2657         if (!duration)
2658                 duration = 10;
2659
2660         roc->chan = channel;
2661         roc->duration = duration;
2662         roc->req_duration = duration;
2663         roc->frame = txskb;
2664         roc->type = type;
2665         roc->mgmt_tx_cookie = (unsigned long)txskb;
2666         roc->sdata = sdata;
2667         INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work);
2668         INIT_LIST_HEAD(&roc->dependents);
2669
2670         /*
2671          * cookie is either the roc cookie (for normal roc)
2672          * or the SKB (for mgmt TX)
2673          */
2674         if (!txskb) {
2675                 /* local->mtx protects this */
2676                 local->roc_cookie_counter++;
2677                 roc->cookie = local->roc_cookie_counter;
2678                 /* wow, you wrapped 64 bits ... more likely a bug */
2679                 if (WARN_ON(roc->cookie == 0)) {
2680                         roc->cookie = 1;
2681                         local->roc_cookie_counter++;
2682                 }
2683                 *cookie = roc->cookie;
2684         } else {
2685                 *cookie = (unsigned long)txskb;
2686         }
2687
2688         /* if there's one pending or we're scanning, queue this one */
2689         if (!list_empty(&local->roc_list) ||
2690             local->scanning || local->radar_detect_enabled)
2691                 goto out_check_combine;
2692
2693         /* if not HW assist, just queue & schedule work */
2694         if (!local->ops->remain_on_channel) {
2695                 ieee80211_queue_delayed_work(&local->hw, &roc->work, 0);
2696                 goto out_queue;
2697         }
2698
2699         /* otherwise actually kick it off here (for error handling) */
2700
2701         ret = drv_remain_on_channel(local, sdata, channel, duration, type);
2702         if (ret) {
2703                 kfree(roc);
2704                 return ret;
2705         }
2706
2707         roc->started = true;
2708         goto out_queue;
2709
2710  out_check_combine:
2711         list_for_each_entry(tmp, &local->roc_list, list) {
2712                 if (tmp->chan != channel || tmp->sdata != sdata)
2713                         continue;
2714
2715                 /*
2716                  * Extend this ROC if possible:
2717                  *
2718                  * If it hasn't started yet, just increase the duration
2719                  * and add the new one to the list of dependents.
2720                  * If the type of the new ROC has higher priority, modify the
2721                  * type of the previous one to match that of the new one.
2722                  */
2723                 if (!tmp->started) {
2724                         list_add_tail(&roc->list, &tmp->dependents);
2725                         tmp->duration = max(tmp->duration, roc->duration);
2726                         tmp->type = max(tmp->type, roc->type);
2727                         queued = true;
2728                         break;
2729                 }
2730
2731                 /* If it has already started, it's more difficult ... */
2732                 if (local->ops->remain_on_channel) {
2733                         unsigned long j = jiffies;
2734
2735                         /*
2736                          * In the offloaded ROC case, if it hasn't begun, add
2737                          * this new one to the dependent list to be handled
2738                          * when the master one begins. If it has begun,
2739                          * check that there's still a minimum time left and
2740                          * if so, start this one, transmitting the frame, but
2741                          * add it to the list directly after this one with
2742                          * a reduced time so we'll ask the driver to execute
2743                          * it right after finishing the previous one, in the
2744                          * hope that it'll also be executed right afterwards,
2745                          * effectively extending the old one.
2746                          * If there's no minimum time left, just add it to the
2747                          * normal list.
2748                          * TODO: the ROC type is ignored here, assuming that it
2749                          * is better to immediately use the current ROC.
2750                          */
2751                         if (!tmp->hw_begun) {
2752                                 list_add_tail(&roc->list, &tmp->dependents);
2753                                 queued = true;
2754                                 break;
2755                         }
2756
2757                         if (time_before(j + IEEE80211_ROC_MIN_LEFT,
2758                                         tmp->hw_start_time +
2759                                         msecs_to_jiffies(tmp->duration))) {
2760                                 int new_dur;
2761
2762                                 ieee80211_handle_roc_started(roc);
2763
2764                                 new_dur = roc->duration -
2765                                           jiffies_to_msecs(tmp->hw_start_time +
2766                                                            msecs_to_jiffies(
2767                                                                 tmp->duration) -
2768                                                            j);
2769
2770                                 if (new_dur > 0) {
2771                                         /* add right after tmp */
2772                                         list_add(&roc->list, &tmp->list);
2773                                 } else {
2774                                         list_add_tail(&roc->list,
2775                                                       &tmp->dependents);
2776                                 }
2777                                 queued = true;
2778                         }
2779                 } else if (del_timer_sync(&tmp->work.timer)) {
2780                         unsigned long new_end;
2781
2782                         /*
2783                          * In the software ROC case, cancel the timer, if
2784                          * that fails then the finish work is already
2785                          * queued/pending and thus we queue the new ROC
2786                          * normally, if that succeeds then we can extend
2787                          * the timer duration and TX the frame (if any.)
2788                          */
2789
2790                         list_add_tail(&roc->list, &tmp->dependents);
2791                         queued = true;
2792
2793                         new_end = jiffies + msecs_to_jiffies(roc->duration);
2794
2795                         /* ok, it was started & we canceled timer */
2796                         if (time_after(new_end, tmp->work.timer.expires))
2797                                 mod_timer(&tmp->work.timer, new_end);
2798                         else
2799                                 add_timer(&tmp->work.timer);
2800
2801                         ieee80211_handle_roc_started(roc);
2802                 }
2803                 break;
2804         }
2805
2806  out_queue:
2807         if (!queued)
2808                 list_add_tail(&roc->list, &local->roc_list);
2809
2810         return 0;
2811 }
2812
2813 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
2814                                        struct wireless_dev *wdev,
2815                                        struct ieee80211_channel *chan,
2816                                        unsigned int duration,
2817                                        u64 *cookie)
2818 {
2819         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2820         struct ieee80211_local *local = sdata->local;
2821         int ret;
2822
2823         mutex_lock(&local->mtx);
2824         ret = ieee80211_start_roc_work(local, sdata, chan,
2825                                        duration, cookie, NULL,
2826                                        IEEE80211_ROC_TYPE_NORMAL);
2827         mutex_unlock(&local->mtx);
2828
2829         return ret;
2830 }
2831
2832 static int ieee80211_cancel_roc(struct ieee80211_local *local,
2833                                 u64 cookie, bool mgmt_tx)
2834 {
2835         struct ieee80211_roc_work *roc, *tmp, *found = NULL;
2836         int ret;
2837
2838         mutex_lock(&local->mtx);
2839         list_for_each_entry_safe(roc, tmp, &local->roc_list, list) {
2840                 struct ieee80211_roc_work *dep, *tmp2;
2841
2842                 list_for_each_entry_safe(dep, tmp2, &roc->dependents, list) {
2843                         if (!mgmt_tx && dep->cookie != cookie)
2844                                 continue;
2845                         else if (mgmt_tx && dep->mgmt_tx_cookie != cookie)
2846                                 continue;
2847                         /* found dependent item -- just remove it */
2848                         list_del(&dep->list);
2849                         mutex_unlock(&local->mtx);
2850
2851                         ieee80211_roc_notify_destroy(dep, true);
2852                         return 0;
2853                 }
2854
2855                 if (!mgmt_tx && roc->cookie != cookie)
2856                         continue;
2857                 else if (mgmt_tx && roc->mgmt_tx_cookie != cookie)
2858                         continue;
2859
2860                 found = roc;
2861                 break;
2862         }
2863
2864         if (!found) {
2865                 mutex_unlock(&local->mtx);
2866                 return -ENOENT;
2867         }
2868
2869         /*
2870          * We found the item to cancel, so do that. Note that it
2871          * may have dependents, which we also cancel (and send
2872          * the expired signal for.) Not doing so would be quite
2873          * tricky here, but we may need to fix it later.
2874          */
2875
2876         if (local->ops->remain_on_channel) {
2877                 if (found->started) {
2878                         ret = drv_cancel_remain_on_channel(local);
2879                         if (WARN_ON_ONCE(ret)) {
2880                                 mutex_unlock(&local->mtx);
2881                                 return ret;
2882                         }
2883                 }
2884
2885                 list_del(&found->list);
2886
2887                 if (found->started)
2888                         ieee80211_start_next_roc(local);
2889                 mutex_unlock(&local->mtx);
2890
2891                 ieee80211_roc_notify_destroy(found, true);
2892         } else {
2893                 /* work may be pending so use it all the time */
2894                 found->abort = true;
2895                 ieee80211_queue_delayed_work(&local->hw, &found->work, 0);
2896
2897                 mutex_unlock(&local->mtx);
2898
2899                 /* work will clean up etc */
2900                 flush_delayed_work(&found->work);
2901                 WARN_ON(!found->to_be_freed);
2902                 kfree(found);
2903         }
2904
2905         return 0;
2906 }
2907
2908 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
2909                                               struct wireless_dev *wdev,
2910                                               u64 cookie)
2911 {
2912         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2913         struct ieee80211_local *local = sdata->local;
2914
2915         return ieee80211_cancel_roc(local, cookie, false);
2916 }
2917
2918 static int ieee80211_start_radar_detection(struct wiphy *wiphy,
2919                                            struct net_device *dev,
2920                                            struct cfg80211_chan_def *chandef)
2921 {
2922         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2923         struct ieee80211_local *local = sdata->local;
2924         unsigned long timeout;
2925         int err;
2926
2927         mutex_lock(&local->mtx);
2928         if (!list_empty(&local->roc_list) || local->scanning) {
2929                 err = -EBUSY;
2930                 goto out_unlock;
2931         }
2932
2933         /* whatever, but channel contexts should not complain about that one */
2934         sdata->smps_mode = IEEE80211_SMPS_OFF;
2935         sdata->needed_rx_chains = local->rx_chains;
2936         sdata->radar_required = true;
2937
2938         err = ieee80211_vif_use_channel(sdata, chandef,
2939                                         IEEE80211_CHANCTX_SHARED);
2940         if (err)
2941                 goto out_unlock;
2942
2943         timeout = msecs_to_jiffies(IEEE80211_DFS_MIN_CAC_TIME_MS);
2944         ieee80211_queue_delayed_work(&sdata->local->hw,
2945                                      &sdata->dfs_cac_timer_work, timeout);
2946
2947  out_unlock:
2948         mutex_unlock(&local->mtx);
2949         return err;
2950 }
2951
2952 static struct cfg80211_beacon_data *
2953 cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon)
2954 {
2955         struct cfg80211_beacon_data *new_beacon;
2956         u8 *pos;
2957         int len;
2958
2959         len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len +
2960               beacon->proberesp_ies_len + beacon->assocresp_ies_len +
2961               beacon->probe_resp_len;
2962
2963         new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL);
2964         if (!new_beacon)
2965                 return NULL;
2966
2967         pos = (u8 *)(new_beacon + 1);
2968         if (beacon->head_len) {
2969                 new_beacon->head_len = beacon->head_len;
2970                 new_beacon->head = pos;
2971                 memcpy(pos, beacon->head, beacon->head_len);
2972                 pos += beacon->head_len;
2973         }
2974         if (beacon->tail_len) {
2975                 new_beacon->tail_len = beacon->tail_len;
2976                 new_beacon->tail = pos;
2977                 memcpy(pos, beacon->tail, beacon->tail_len);
2978                 pos += beacon->tail_len;
2979         }
2980         if (beacon->beacon_ies_len) {
2981                 new_beacon->beacon_ies_len = beacon->beacon_ies_len;
2982                 new_beacon->beacon_ies = pos;
2983                 memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len);
2984                 pos += beacon->beacon_ies_len;
2985         }
2986         if (beacon->proberesp_ies_len) {
2987                 new_beacon->proberesp_ies_len = beacon->proberesp_ies_len;
2988                 new_beacon->proberesp_ies = pos;
2989                 memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len);
2990                 pos += beacon->proberesp_ies_len;
2991         }
2992         if (beacon->assocresp_ies_len) {
2993                 new_beacon->assocresp_ies_len = beacon->assocresp_ies_len;
2994                 new_beacon->assocresp_ies = pos;
2995                 memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len);
2996                 pos += beacon->assocresp_ies_len;
2997         }
2998         if (beacon->probe_resp_len) {
2999                 new_beacon->probe_resp_len = beacon->probe_resp_len;
3000                 beacon->probe_resp = pos;
3001                 memcpy(pos, beacon->probe_resp, beacon->probe_resp_len);
3002                 pos += beacon->probe_resp_len;
3003         }
3004
3005         return new_beacon;
3006 }
3007
3008 void ieee80211_csa_finish(struct ieee80211_vif *vif)
3009 {
3010         struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
3011
3012         ieee80211_queue_work(&sdata->local->hw,
3013                              &sdata->csa_finalize_work);
3014 }
3015 EXPORT_SYMBOL(ieee80211_csa_finish);
3016
3017 static void ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
3018 {
3019         struct ieee80211_local *local = sdata->local;
3020         int err, changed = 0;
3021
3022         sdata_assert_lock(sdata);
3023
3024         mutex_lock(&local->mtx);
3025         sdata->radar_required = sdata->csa_radar_required;
3026         err = ieee80211_vif_change_channel(sdata, &changed);
3027         mutex_unlock(&local->mtx);
3028         if (WARN_ON(err < 0))
3029                 return;
3030
3031         if (!local->use_chanctx) {
3032                 local->_oper_chandef = sdata->csa_chandef;
3033                 ieee80211_hw_config(local, 0);
3034         }
3035
3036         sdata->vif.csa_active = false;
3037         switch (sdata->vif.type) {
3038         case NL80211_IFTYPE_AP:
3039                 err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon);
3040                 kfree(sdata->u.ap.next_beacon);
3041                 sdata->u.ap.next_beacon = NULL;
3042
3043                 if (err < 0)
3044                         return;
3045                 changed |= err;
3046                 break;
3047         case NL80211_IFTYPE_ADHOC:
3048                 err = ieee80211_ibss_finish_csa(sdata);
3049                 if (err < 0)
3050                         return;
3051                 changed |= err;
3052                 break;
3053 #ifdef CONFIG_MAC80211_MESH
3054         case NL80211_IFTYPE_MESH_POINT:
3055                 err = ieee80211_mesh_finish_csa(sdata);
3056                 if (err < 0)
3057                         return;
3058                 changed |= err;
3059                 break;
3060 #endif
3061         default:
3062                 WARN_ON(1);
3063                 return;
3064         }
3065
3066         ieee80211_bss_info_change_notify(sdata, changed);
3067
3068         ieee80211_wake_queues_by_reason(&sdata->local->hw,
3069                                         IEEE80211_MAX_QUEUE_MAP,
3070                                         IEEE80211_QUEUE_STOP_REASON_CSA);
3071
3072         cfg80211_ch_switch_notify(sdata->dev, &sdata->csa_chandef);
3073 }
3074
3075 void ieee80211_csa_finalize_work(struct work_struct *work)
3076 {
3077         struct ieee80211_sub_if_data *sdata =
3078                 container_of(work, struct ieee80211_sub_if_data,
3079                              csa_finalize_work);
3080
3081         sdata_lock(sdata);
3082         /* AP might have been stopped while waiting for the lock. */
3083         if (!sdata->vif.csa_active)
3084                 goto unlock;
3085
3086         if (!ieee80211_sdata_running(sdata))
3087                 goto unlock;
3088
3089         ieee80211_csa_finalize(sdata);
3090
3091 unlock:
3092         sdata_unlock(sdata);
3093 }
3094
3095 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3096                              struct cfg80211_csa_settings *params)
3097 {
3098         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3099         struct ieee80211_local *local = sdata->local;
3100         struct ieee80211_chanctx_conf *chanctx_conf;
3101         struct ieee80211_chanctx *chanctx;
3102         struct ieee80211_if_mesh __maybe_unused *ifmsh;
3103         int err, num_chanctx, changed = 0;
3104
3105         sdata_assert_lock(sdata);
3106
3107         if (!list_empty(&local->roc_list) || local->scanning)
3108                 return -EBUSY;
3109
3110         if (sdata->wdev.cac_started)
3111                 return -EBUSY;
3112
3113         if (cfg80211_chandef_identical(&params->chandef,
3114                                        &sdata->vif.bss_conf.chandef))
3115                 return -EINVAL;
3116
3117         rcu_read_lock();
3118         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3119         if (!chanctx_conf) {
3120                 rcu_read_unlock();
3121                 return -EBUSY;
3122         }
3123
3124         /* don't handle for multi-VIF cases */
3125         chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf);
3126         if (chanctx->refcount > 1) {
3127                 rcu_read_unlock();
3128                 return -EBUSY;
3129         }
3130         num_chanctx = 0;
3131         list_for_each_entry_rcu(chanctx, &local->chanctx_list, list)
3132                 num_chanctx++;
3133         rcu_read_unlock();
3134
3135         if (num_chanctx > 1)
3136                 return -EBUSY;
3137
3138         /* don't allow another channel switch if one is already active. */
3139         if (sdata->vif.csa_active)
3140                 return -EBUSY;
3141
3142         switch (sdata->vif.type) {
3143         case NL80211_IFTYPE_AP:
3144                 sdata->u.ap.next_beacon =
3145                         cfg80211_beacon_dup(&params->beacon_after);
3146                 if (!sdata->u.ap.next_beacon)
3147                         return -ENOMEM;
3148
3149                 /*
3150                  * With a count of 0, we don't have to wait for any
3151                  * TBTT before switching, so complete the CSA
3152                  * immediately.  In theory, with a count == 1 we
3153                  * should delay the switch until just before the next
3154                  * TBTT, but that would complicate things so we switch
3155                  * immediately too.  If we would delay the switch
3156                  * until the next TBTT, we would have to set the probe
3157                  * response here.
3158                  *
3159                  * TODO: A channel switch with count <= 1 without
3160                  * sending a CSA action frame is kind of useless,
3161                  * because the clients won't know we're changing
3162                  * channels.  The action frame must be implemented
3163                  * either here or in the userspace.
3164                  */
3165                 if (params->count <= 1)
3166                         break;
3167
3168                 sdata->csa_counter_offset_beacon =
3169                         params->counter_offset_beacon;
3170                 sdata->csa_counter_offset_presp = params->counter_offset_presp;
3171                 err = ieee80211_assign_beacon(sdata, &params->beacon_csa);
3172                 if (err < 0) {
3173                         kfree(sdata->u.ap.next_beacon);
3174                         return err;
3175                 }
3176                 changed |= err;
3177
3178                 break;
3179         case NL80211_IFTYPE_ADHOC:
3180                 if (!sdata->vif.bss_conf.ibss_joined)
3181                         return -EINVAL;
3182
3183                 if (params->chandef.width != sdata->u.ibss.chandef.width)
3184                         return -EINVAL;
3185
3186                 switch (params->chandef.width) {
3187                 case NL80211_CHAN_WIDTH_40:
3188                         if (cfg80211_get_chandef_type(&params->chandef) !=
3189                             cfg80211_get_chandef_type(&sdata->u.ibss.chandef))
3190                                 return -EINVAL;
3191                 case NL80211_CHAN_WIDTH_5:
3192                 case NL80211_CHAN_WIDTH_10:
3193                 case NL80211_CHAN_WIDTH_20_NOHT:
3194                 case NL80211_CHAN_WIDTH_20:
3195                         break;
3196                 default:
3197                         return -EINVAL;
3198                 }
3199
3200                 /* changes into another band are not supported */
3201                 if (sdata->u.ibss.chandef.chan->band !=
3202                     params->chandef.chan->band)
3203                         return -EINVAL;
3204
3205                 /* see comments in the NL80211_IFTYPE_AP block */
3206                 if (params->count > 1) {
3207                         err = ieee80211_ibss_csa_beacon(sdata, params);
3208                         if (err < 0)
3209                                 return err;
3210                         changed |= err;
3211                 }
3212
3213                 ieee80211_send_action_csa(sdata, params);
3214
3215                 break;
3216 #ifdef CONFIG_MAC80211_MESH
3217         case NL80211_IFTYPE_MESH_POINT:
3218                 ifmsh = &sdata->u.mesh;
3219
3220                 if (params->chandef.width != sdata->vif.bss_conf.chandef.width)
3221                         return -EINVAL;
3222
3223                 /* changes into another band are not supported */
3224                 if (sdata->vif.bss_conf.chandef.chan->band !=
3225                     params->chandef.chan->band)
3226                         return -EINVAL;
3227
3228                 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_NONE) {
3229                         ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_INIT;
3230                         if (!ifmsh->pre_value)
3231                                 ifmsh->pre_value = 1;
3232                         else
3233                                 ifmsh->pre_value++;
3234                 }
3235
3236                 /* see comments in the NL80211_IFTYPE_AP block */
3237                 if (params->count > 1) {
3238                         err = ieee80211_mesh_csa_beacon(sdata, params);
3239                         if (err < 0) {
3240                                 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_NONE;
3241                                 return err;
3242                         }
3243                         changed |= err;
3244                 }
3245
3246                 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_INIT)
3247                         ieee80211_send_action_csa(sdata, params);
3248
3249                 break;
3250 #endif
3251         default:
3252                 return -EOPNOTSUPP;
3253         }
3254
3255         sdata->csa_radar_required = params->radar_required;
3256
3257         if (params->block_tx)
3258                 ieee80211_stop_queues_by_reason(&local->hw,
3259                                 IEEE80211_MAX_QUEUE_MAP,
3260                                 IEEE80211_QUEUE_STOP_REASON_CSA);
3261
3262         sdata->csa_chandef = params->chandef;
3263         sdata->vif.csa_active = true;
3264
3265         if (changed) {
3266                 ieee80211_bss_info_change_notify(sdata, changed);
3267                 drv_channel_switch_beacon(sdata, &params->chandef);
3268         } else {
3269                 /* if the beacon didn't change, we can finalize immediately */
3270                 ieee80211_csa_finalize(sdata);
3271         }
3272
3273         return 0;
3274 }
3275
3276 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
3277                              struct cfg80211_mgmt_tx_params *params,
3278                              u64 *cookie)
3279 {
3280         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3281         struct ieee80211_local *local = sdata->local;
3282         struct sk_buff *skb;
3283         struct sta_info *sta;
3284         const struct ieee80211_mgmt *mgmt = (void *)params->buf;
3285         bool need_offchan = false;
3286         u32 flags;
3287         int ret;
3288
3289         if (params->dont_wait_for_ack)
3290                 flags = IEEE80211_TX_CTL_NO_ACK;
3291         else
3292                 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
3293                         IEEE80211_TX_CTL_REQ_TX_STATUS;
3294
3295         if (params->no_cck)
3296                 flags |= IEEE80211_TX_CTL_NO_CCK_RATE;
3297
3298         switch (sdata->vif.type) {
3299         case NL80211_IFTYPE_ADHOC:
3300                 if (!sdata->vif.bss_conf.ibss_joined)
3301                         need_offchan = true;
3302                 /* fall through */
3303 #ifdef CONFIG_MAC80211_MESH
3304         case NL80211_IFTYPE_MESH_POINT:
3305                 if (ieee80211_vif_is_mesh(&sdata->vif) &&
3306                     !sdata->u.mesh.mesh_id_len)
3307                         need_offchan = true;
3308                 /* fall through */
3309 #endif
3310         case NL80211_IFTYPE_AP:
3311         case NL80211_IFTYPE_AP_VLAN:
3312         case NL80211_IFTYPE_P2P_GO:
3313                 if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
3314                     !ieee80211_vif_is_mesh(&sdata->vif) &&
3315                     !rcu_access_pointer(sdata->bss->beacon))
3316                         need_offchan = true;
3317                 if (!ieee80211_is_action(mgmt->frame_control) ||
3318                     mgmt->u.action.category == WLAN_CATEGORY_PUBLIC ||
3319                     mgmt->u.action.category == WLAN_CATEGORY_SELF_PROTECTED ||
3320                     mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT)
3321                         break;
3322                 rcu_read_lock();
3323                 sta = sta_info_get(sdata, mgmt->da);
3324                 rcu_read_unlock();
3325                 if (!sta)
3326                         return -ENOLINK;
3327                 break;
3328         case NL80211_IFTYPE_STATION:
3329         case NL80211_IFTYPE_P2P_CLIENT:
3330                 if (!sdata->u.mgd.associated)
3331                         need_offchan = true;
3332                 break;
3333         case NL80211_IFTYPE_P2P_DEVICE:
3334                 need_offchan = true;
3335                 break;
3336         default:
3337                 return -EOPNOTSUPP;
3338         }
3339
3340         /* configurations requiring offchan cannot work if no channel has been
3341          * specified
3342          */
3343         if (need_offchan && !params->chan)
3344                 return -EINVAL;
3345
3346         mutex_lock(&local->mtx);
3347
3348         /* Check if the operating channel is the requested channel */
3349         if (!need_offchan) {
3350                 struct ieee80211_chanctx_conf *chanctx_conf;
3351
3352                 rcu_read_lock();
3353                 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3354
3355                 if (chanctx_conf) {
3356                         need_offchan = params->chan &&
3357                                        (params->chan !=
3358                                         chanctx_conf->def.chan);
3359                 } else if (!params->chan) {
3360                         ret = -EINVAL;
3361                         rcu_read_unlock();
3362                         goto out_unlock;
3363                 } else {
3364                         need_offchan = true;
3365                 }
3366                 rcu_read_unlock();
3367         }
3368
3369         if (need_offchan && !params->offchan) {
3370                 ret = -EBUSY;
3371                 goto out_unlock;
3372         }
3373
3374         skb = dev_alloc_skb(local->hw.extra_tx_headroom + params->len);
3375         if (!skb) {
3376                 ret = -ENOMEM;
3377                 goto out_unlock;
3378         }
3379         skb_reserve(skb, local->hw.extra_tx_headroom);
3380
3381         memcpy(skb_put(skb, params->len), params->buf, params->len);
3382
3383         IEEE80211_SKB_CB(skb)->flags = flags;
3384
3385         skb->dev = sdata->dev;
3386
3387         if (!need_offchan) {
3388                 *cookie = (unsigned long) skb;
3389                 ieee80211_tx_skb(sdata, skb);
3390                 ret = 0;
3391                 goto out_unlock;
3392         }
3393
3394         IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN |
3395                                         IEEE80211_TX_INTFL_OFFCHAN_TX_OK;
3396         if (local->hw.flags & IEEE80211_HW_QUEUE_CONTROL)
3397                 IEEE80211_SKB_CB(skb)->hw_queue =
3398                         local->hw.offchannel_tx_hw_queue;
3399
3400         /* This will handle all kinds of coalescing and immediate TX */
3401         ret = ieee80211_start_roc_work(local, sdata, params->chan,
3402                                        params->wait, cookie, skb,
3403                                        IEEE80211_ROC_TYPE_MGMT_TX);
3404         if (ret)
3405                 kfree_skb(skb);
3406  out_unlock:
3407         mutex_unlock(&local->mtx);
3408         return ret;
3409 }
3410
3411 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
3412                                          struct wireless_dev *wdev,
3413                                          u64 cookie)
3414 {
3415         struct ieee80211_local *local = wiphy_priv(wiphy);
3416
3417         return ieee80211_cancel_roc(local, cookie, true);
3418 }
3419
3420 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
3421                                           struct wireless_dev *wdev,
3422                                           u16 frame_type, bool reg)
3423 {
3424         struct ieee80211_local *local = wiphy_priv(wiphy);
3425
3426         switch (frame_type) {
3427         case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ:
3428                 if (reg)
3429                         local->probe_req_reg++;
3430                 else
3431                         local->probe_req_reg--;
3432
3433                 if (!local->open_count)
3434                         break;
3435
3436                 ieee80211_queue_work(&local->hw, &local->reconfig_filter);
3437                 break;
3438         default:
3439                 break;
3440         }
3441 }
3442
3443 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
3444 {
3445         struct ieee80211_local *local = wiphy_priv(wiphy);
3446
3447         if (local->started)
3448                 return -EOPNOTSUPP;
3449
3450         return drv_set_antenna(local, tx_ant, rx_ant);
3451 }
3452
3453 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
3454 {
3455         struct ieee80211_local *local = wiphy_priv(wiphy);
3456
3457         return drv_get_antenna(local, tx_ant, rx_ant);
3458 }
3459
3460 static int ieee80211_set_ringparam(struct wiphy *wiphy, u32 tx, u32 rx)
3461 {
3462         struct ieee80211_local *local = wiphy_priv(wiphy);
3463
3464         return drv_set_ringparam(local, tx, rx);
3465 }
3466
3467 static void ieee80211_get_ringparam(struct wiphy *wiphy,
3468                                     u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max)
3469 {
3470         struct ieee80211_local *local = wiphy_priv(wiphy);
3471
3472         drv_get_ringparam(local, tx, tx_max, rx, rx_max);
3473 }
3474
3475 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
3476                                     struct net_device *dev,
3477                                     struct cfg80211_gtk_rekey_data *data)
3478 {
3479         struct ieee80211_local *local = wiphy_priv(wiphy);
3480         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3481
3482         if (!local->ops->set_rekey_data)
3483                 return -EOPNOTSUPP;
3484
3485         drv_set_rekey_data(local, sdata, data);
3486
3487         return 0;
3488 }
3489
3490 static void ieee80211_tdls_add_ext_capab(struct sk_buff *skb)
3491 {
3492         u8 *pos = (void *)skb_put(skb, 7);
3493
3494         *pos++ = WLAN_EID_EXT_CAPABILITY;
3495         *pos++ = 5; /* len */
3496         *pos++ = 0x0;
3497         *pos++ = 0x0;
3498         *pos++ = 0x0;
3499         *pos++ = 0x0;
3500         *pos++ = WLAN_EXT_CAPA5_TDLS_ENABLED;
3501 }
3502
3503 static u16 ieee80211_get_tdls_sta_capab(struct ieee80211_sub_if_data *sdata)
3504 {
3505         struct ieee80211_local *local = sdata->local;
3506         u16 capab;
3507
3508         capab = 0;
3509         if (ieee80211_get_sdata_band(sdata) != IEEE80211_BAND_2GHZ)
3510                 return capab;
3511
3512         if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE))
3513                 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
3514         if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE))
3515                 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
3516
3517         return capab;
3518 }
3519
3520 static void ieee80211_tdls_add_link_ie(struct sk_buff *skb, u8 *src_addr,
3521                                        u8 *peer, u8 *bssid)
3522 {
3523         struct ieee80211_tdls_lnkie *lnkid;
3524
3525         lnkid = (void *)skb_put(skb, sizeof(struct ieee80211_tdls_lnkie));
3526
3527         lnkid->ie_type = WLAN_EID_LINK_ID;
3528         lnkid->ie_len = sizeof(struct ieee80211_tdls_lnkie) - 2;
3529
3530         memcpy(lnkid->bssid, bssid, ETH_ALEN);
3531         memcpy(lnkid->init_sta, src_addr, ETH_ALEN);
3532         memcpy(lnkid->resp_sta, peer, ETH_ALEN);
3533 }
3534
3535 static int
3536 ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev,
3537                                u8 *peer, u8 action_code, u8 dialog_token,
3538                                u16 status_code, struct sk_buff *skb)
3539 {
3540         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3541         enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
3542         struct ieee80211_tdls_data *tf;
3543
3544         tf = (void *)skb_put(skb, offsetof(struct ieee80211_tdls_data, u));
3545
3546         memcpy(tf->da, peer, ETH_ALEN);
3547         memcpy(tf->sa, sdata->vif.addr, ETH_ALEN);
3548         tf->ether_type = cpu_to_be16(ETH_P_TDLS);
3549         tf->payload_type = WLAN_TDLS_SNAP_RFTYPE;
3550
3551         switch (action_code) {
3552         case WLAN_TDLS_SETUP_REQUEST:
3553                 tf->category = WLAN_CATEGORY_TDLS;
3554                 tf->action_code = WLAN_TDLS_SETUP_REQUEST;
3555
3556                 skb_put(skb, sizeof(tf->u.setup_req));
3557                 tf->u.setup_req.dialog_token = dialog_token;
3558                 tf->u.setup_req.capability =
3559                         cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
3560
3561                 ieee80211_add_srates_ie(sdata, skb, false, band);
3562                 ieee80211_add_ext_srates_ie(sdata, skb, false, band);
3563                 ieee80211_tdls_add_ext_capab(skb);
3564                 break;
3565         case WLAN_TDLS_SETUP_RESPONSE:
3566                 tf->category = WLAN_CATEGORY_TDLS;
3567                 tf->action_code = WLAN_TDLS_SETUP_RESPONSE;
3568
3569                 skb_put(skb, sizeof(tf->u.setup_resp));
3570                 tf->u.setup_resp.status_code = cpu_to_le16(status_code);
3571                 tf->u.setup_resp.dialog_token = dialog_token;
3572                 tf->u.setup_resp.capability =
3573                         cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
3574
3575                 ieee80211_add_srates_ie(sdata, skb, false, band);
3576                 ieee80211_add_ext_srates_ie(sdata, skb, false, band);
3577                 ieee80211_tdls_add_ext_capab(skb);
3578                 break;
3579         case WLAN_TDLS_SETUP_CONFIRM:
3580                 tf->category = WLAN_CATEGORY_TDLS;
3581                 tf->action_code = WLAN_TDLS_SETUP_CONFIRM;
3582
3583                 skb_put(skb, sizeof(tf->u.setup_cfm));
3584                 tf->u.setup_cfm.status_code = cpu_to_le16(status_code);
3585                 tf->u.setup_cfm.dialog_token = dialog_token;
3586                 break;
3587         case WLAN_TDLS_TEARDOWN:
3588                 tf->category = WLAN_CATEGORY_TDLS;
3589                 tf->action_code = WLAN_TDLS_TEARDOWN;
3590
3591                 skb_put(skb, sizeof(tf->u.teardown));
3592                 tf->u.teardown.reason_code = cpu_to_le16(status_code);
3593                 break;
3594         case WLAN_TDLS_DISCOVERY_REQUEST:
3595                 tf->category = WLAN_CATEGORY_TDLS;
3596                 tf->action_code = WLAN_TDLS_DISCOVERY_REQUEST;
3597
3598                 skb_put(skb, sizeof(tf->u.discover_req));
3599                 tf->u.discover_req.dialog_token = dialog_token;
3600                 break;
3601         default:
3602                 return -EINVAL;
3603         }
3604
3605         return 0;
3606 }
3607
3608 static int
3609 ieee80211_prep_tdls_direct(struct wiphy *wiphy, struct net_device *dev,
3610                            u8 *peer, u8 action_code, u8 dialog_token,
3611                            u16 status_code, struct sk_buff *skb)
3612 {
3613         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3614         enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
3615         struct ieee80211_mgmt *mgmt;
3616
3617         mgmt = (void *)skb_put(skb, 24);
3618         memset(mgmt, 0, 24);
3619         memcpy(mgmt->da, peer, ETH_ALEN);
3620         memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
3621         memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN);
3622
3623         mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
3624                                           IEEE80211_STYPE_ACTION);
3625
3626         switch (action_code) {
3627         case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
3628                 skb_put(skb, 1 + sizeof(mgmt->u.action.u.tdls_discover_resp));
3629                 mgmt->u.action.category = WLAN_CATEGORY_PUBLIC;
3630                 mgmt->u.action.u.tdls_discover_resp.action_code =
3631                         WLAN_PUB_ACTION_TDLS_DISCOVER_RES;
3632                 mgmt->u.action.u.tdls_discover_resp.dialog_token =
3633                         dialog_token;
3634                 mgmt->u.action.u.tdls_discover_resp.capability =
3635                         cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
3636
3637                 ieee80211_add_srates_ie(sdata, skb, false, band);
3638                 ieee80211_add_ext_srates_ie(sdata, skb, false, band);
3639                 ieee80211_tdls_add_ext_capab(skb);
3640                 break;
3641         default:
3642                 return -EINVAL;
3643         }
3644
3645         return 0;
3646 }
3647
3648 static int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
3649                                u8 *peer, u8 action_code, u8 dialog_token,
3650                                u16 status_code, const u8 *extra_ies,
3651                                size_t extra_ies_len)
3652 {
3653         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3654         struct ieee80211_local *local = sdata->local;
3655         struct sk_buff *skb = NULL;
3656         bool send_direct;
3657         int ret;
3658
3659         if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
3660                 return -ENOTSUPP;
3661
3662         /* make sure we are in managed mode, and associated */
3663         if (sdata->vif.type != NL80211_IFTYPE_STATION ||
3664             !sdata->u.mgd.associated)
3665                 return -EINVAL;
3666
3667         tdls_dbg(sdata, "TDLS mgmt action %d peer %pM\n",
3668                  action_code, peer);
3669
3670         skb = dev_alloc_skb(local->hw.extra_tx_headroom +
3671                             max(sizeof(struct ieee80211_mgmt),
3672                                 sizeof(struct ieee80211_tdls_data)) +
3673                             50 + /* supported rates */
3674                             7 + /* ext capab */
3675                             extra_ies_len +
3676                             sizeof(struct ieee80211_tdls_lnkie));
3677         if (!skb)
3678                 return -ENOMEM;
3679
3680         skb_reserve(skb, local->hw.extra_tx_headroom);
3681
3682         switch (action_code) {
3683         case WLAN_TDLS_SETUP_REQUEST:
3684         case WLAN_TDLS_SETUP_RESPONSE:
3685         case WLAN_TDLS_SETUP_CONFIRM:
3686         case WLAN_TDLS_TEARDOWN:
3687         case WLAN_TDLS_DISCOVERY_REQUEST:
3688                 ret = ieee80211_prep_tdls_encap_data(wiphy, dev, peer,
3689                                                      action_code, dialog_token,
3690                                                      status_code, skb);
3691                 send_direct = false;
3692                 break;
3693         case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
3694                 ret = ieee80211_prep_tdls_direct(wiphy, dev, peer, action_code,
3695                                                  dialog_token, status_code,
3696                                                  skb);
3697                 send_direct = true;
3698                 break;
3699         default:
3700                 ret = -ENOTSUPP;
3701                 break;
3702         }
3703
3704         if (ret < 0)
3705                 goto fail;
3706
3707         if (extra_ies_len)
3708                 memcpy(skb_put(skb, extra_ies_len), extra_ies, extra_ies_len);
3709
3710         /* the TDLS link IE is always added last */
3711         switch (action_code) {
3712         case WLAN_TDLS_SETUP_REQUEST:
3713         case WLAN_TDLS_SETUP_CONFIRM:
3714         case WLAN_TDLS_TEARDOWN:
3715         case WLAN_TDLS_DISCOVERY_REQUEST:
3716                 /* we are the initiator */
3717                 ieee80211_tdls_add_link_ie(skb, sdata->vif.addr, peer,
3718                                            sdata->u.mgd.bssid);
3719                 break;
3720         case WLAN_TDLS_SETUP_RESPONSE:
3721         case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
3722                 /* we are the responder */
3723                 ieee80211_tdls_add_link_ie(skb, peer, sdata->vif.addr,
3724                                            sdata->u.mgd.bssid);
3725                 break;
3726         default:
3727                 ret = -ENOTSUPP;
3728                 goto fail;
3729         }
3730
3731         if (send_direct) {
3732                 ieee80211_tx_skb(sdata, skb);
3733                 return 0;
3734         }
3735
3736         /*
3737          * According to 802.11z: Setup req/resp are sent in AC_BK, otherwise
3738          * we should default to AC_VI.
3739          */
3740         switch (action_code) {
3741         case WLAN_TDLS_SETUP_REQUEST:
3742         case WLAN_TDLS_SETUP_RESPONSE:
3743                 skb_set_queue_mapping(skb, IEEE80211_AC_BK);
3744                 skb->priority = 2;
3745                 break;
3746         default:
3747                 skb_set_queue_mapping(skb, IEEE80211_AC_VI);
3748                 skb->priority = 5;
3749                 break;
3750         }
3751
3752         /* disable bottom halves when entering the Tx path */
3753         local_bh_disable();
3754         ret = ieee80211_subif_start_xmit(skb, dev);
3755         local_bh_enable();
3756
3757         return ret;
3758
3759 fail:
3760         dev_kfree_skb(skb);
3761         return ret;
3762 }
3763
3764 static int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
3765                                u8 *peer, enum nl80211_tdls_operation oper)
3766 {
3767         struct sta_info *sta;
3768         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3769
3770         if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
3771                 return -ENOTSUPP;
3772
3773         if (sdata->vif.type != NL80211_IFTYPE_STATION)
3774                 return -EINVAL;
3775
3776         tdls_dbg(sdata, "TDLS oper %d peer %pM\n", oper, peer);
3777
3778         switch (oper) {
3779         case NL80211_TDLS_ENABLE_LINK:
3780                 rcu_read_lock();
3781                 sta = sta_info_get(sdata, peer);
3782                 if (!sta) {
3783                         rcu_read_unlock();
3784                         return -ENOLINK;
3785                 }
3786
3787                 set_sta_flag(sta, WLAN_STA_TDLS_PEER_AUTH);
3788                 rcu_read_unlock();
3789                 break;
3790         case NL80211_TDLS_DISABLE_LINK:
3791                 return sta_info_destroy_addr(sdata, peer);
3792         case NL80211_TDLS_TEARDOWN:
3793         case NL80211_TDLS_SETUP:
3794         case NL80211_TDLS_DISCOVERY_REQ:
3795                 /* We don't support in-driver setup/teardown/discovery */
3796                 return -ENOTSUPP;
3797         default:
3798                 return -ENOTSUPP;
3799         }
3800
3801         return 0;
3802 }
3803
3804 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
3805                                   const u8 *peer, u64 *cookie)
3806 {
3807         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3808         struct ieee80211_local *local = sdata->local;
3809         struct ieee80211_qos_hdr *nullfunc;
3810         struct sk_buff *skb;
3811         int size = sizeof(*nullfunc);
3812         __le16 fc;
3813         bool qos;
3814         struct ieee80211_tx_info *info;
3815         struct sta_info *sta;
3816         struct ieee80211_chanctx_conf *chanctx_conf;
3817         enum ieee80211_band band;
3818
3819         rcu_read_lock();
3820         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3821         if (WARN_ON(!chanctx_conf)) {
3822                 rcu_read_unlock();
3823                 return -EINVAL;
3824         }
3825         band = chanctx_conf->def.chan->band;
3826         sta = sta_info_get_bss(sdata, peer);
3827         if (sta) {
3828                 qos = test_sta_flag(sta, WLAN_STA_WME);
3829         } else {
3830                 rcu_read_unlock();
3831                 return -ENOLINK;
3832         }
3833
3834         if (qos) {
3835                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3836                                  IEEE80211_STYPE_QOS_NULLFUNC |
3837                                  IEEE80211_FCTL_FROMDS);
3838         } else {
3839                 size -= 2;
3840                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3841                                  IEEE80211_STYPE_NULLFUNC |
3842                                  IEEE80211_FCTL_FROMDS);
3843         }
3844
3845         skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
3846         if (!skb) {
3847                 rcu_read_unlock();
3848                 return -ENOMEM;
3849         }
3850
3851         skb->dev = dev;
3852
3853         skb_reserve(skb, local->hw.extra_tx_headroom);
3854
3855         nullfunc = (void *) skb_put(skb, size);
3856         nullfunc->frame_control = fc;
3857         nullfunc->duration_id = 0;
3858         memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
3859         memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
3860         memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
3861         nullfunc->seq_ctrl = 0;
3862
3863         info = IEEE80211_SKB_CB(skb);
3864
3865         info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
3866                        IEEE80211_TX_INTFL_NL80211_FRAME_TX;
3867
3868         skb_set_queue_mapping(skb, IEEE80211_AC_VO);
3869         skb->priority = 7;
3870         if (qos)
3871                 nullfunc->qos_ctrl = cpu_to_le16(7);
3872
3873         local_bh_disable();
3874         ieee80211_xmit(sdata, skb, band);
3875         local_bh_enable();
3876         rcu_read_unlock();
3877
3878         *cookie = (unsigned long) skb;
3879         return 0;
3880 }
3881
3882 static int ieee80211_cfg_get_channel(struct wiphy *wiphy,
3883                                      struct wireless_dev *wdev,
3884                                      struct cfg80211_chan_def *chandef)
3885 {
3886         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3887         struct ieee80211_local *local = wiphy_priv(wiphy);
3888         struct ieee80211_chanctx_conf *chanctx_conf;
3889         int ret = -ENODATA;
3890
3891         rcu_read_lock();
3892         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3893         if (chanctx_conf) {
3894                 *chandef = chanctx_conf->def;
3895                 ret = 0;
3896         } else if (local->open_count > 0 &&
3897                    local->open_count == local->monitors &&
3898                    sdata->vif.type == NL80211_IFTYPE_MONITOR) {
3899                 if (local->use_chanctx)
3900                         *chandef = local->monitor_chandef;
3901                 else
3902                         *chandef = local->_oper_chandef;
3903                 ret = 0;
3904         }
3905         rcu_read_unlock();
3906
3907         return ret;
3908 }
3909
3910 #ifdef CONFIG_PM
3911 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
3912 {
3913         drv_set_wakeup(wiphy_priv(wiphy), enabled);
3914 }
3915 #endif
3916
3917 static int ieee80211_set_qos_map(struct wiphy *wiphy,
3918                                  struct net_device *dev,
3919                                  struct cfg80211_qos_map *qos_map)
3920 {
3921         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3922         struct mac80211_qos_map *new_qos_map, *old_qos_map;
3923
3924         if (qos_map) {
3925                 new_qos_map = kzalloc(sizeof(*new_qos_map), GFP_KERNEL);
3926                 if (!new_qos_map)
3927                         return -ENOMEM;
3928                 memcpy(&new_qos_map->qos_map, qos_map, sizeof(*qos_map));
3929         } else {
3930                 /* A NULL qos_map was passed to disable QoS mapping */
3931                 new_qos_map = NULL;
3932         }
3933
3934         old_qos_map = sdata_dereference(sdata->qos_map, sdata);
3935         rcu_assign_pointer(sdata->qos_map, new_qos_map);
3936         if (old_qos_map)
3937                 kfree_rcu(old_qos_map, rcu_head);
3938
3939         return 0;
3940 }
3941
3942 const struct cfg80211_ops mac80211_config_ops = {
3943         .add_virtual_intf = ieee80211_add_iface,
3944         .del_virtual_intf = ieee80211_del_iface,
3945         .change_virtual_intf = ieee80211_change_iface,
3946         .start_p2p_device = ieee80211_start_p2p_device,
3947         .stop_p2p_device = ieee80211_stop_p2p_device,
3948         .add_key = ieee80211_add_key,
3949         .del_key = ieee80211_del_key,
3950         .get_key = ieee80211_get_key,
3951         .set_default_key = ieee80211_config_default_key,
3952         .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
3953         .start_ap = ieee80211_start_ap,
3954         .change_beacon = ieee80211_change_beacon,
3955         .stop_ap = ieee80211_stop_ap,
3956         .add_station = ieee80211_add_station,
3957         .del_station = ieee80211_del_station,
3958         .change_station = ieee80211_change_station,
3959         .get_station = ieee80211_get_station,
3960         .dump_station = ieee80211_dump_station,
3961         .dump_survey = ieee80211_dump_survey,
3962 #ifdef CONFIG_MAC80211_MESH
3963         .add_mpath = ieee80211_add_mpath,
3964         .del_mpath = ieee80211_del_mpath,
3965         .change_mpath = ieee80211_change_mpath,
3966         .get_mpath = ieee80211_get_mpath,
3967         .dump_mpath = ieee80211_dump_mpath,
3968         .update_mesh_config = ieee80211_update_mesh_config,
3969         .get_mesh_config = ieee80211_get_mesh_config,
3970         .join_mesh = ieee80211_join_mesh,
3971         .leave_mesh = ieee80211_leave_mesh,
3972 #endif
3973         .change_bss = ieee80211_change_bss,
3974         .set_txq_params = ieee80211_set_txq_params,
3975         .set_monitor_channel = ieee80211_set_monitor_channel,
3976         .suspend = ieee80211_suspend,
3977         .resume = ieee80211_resume,
3978         .scan = ieee80211_scan,
3979         .sched_scan_start = ieee80211_sched_scan_start,
3980         .sched_scan_stop = ieee80211_sched_scan_stop,
3981         .auth = ieee80211_auth,
3982         .assoc = ieee80211_assoc,
3983         .deauth = ieee80211_deauth,
3984         .disassoc = ieee80211_disassoc,
3985         .join_ibss = ieee80211_join_ibss,
3986         .leave_ibss = ieee80211_leave_ibss,
3987         .set_mcast_rate = ieee80211_set_mcast_rate,
3988         .set_wiphy_params = ieee80211_set_wiphy_params,
3989         .set_tx_power = ieee80211_set_tx_power,
3990         .get_tx_power = ieee80211_get_tx_power,
3991         .set_wds_peer = ieee80211_set_wds_peer,
3992         .rfkill_poll = ieee80211_rfkill_poll,
3993         CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
3994         CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
3995         .set_power_mgmt = ieee80211_set_power_mgmt,
3996         .set_bitrate_mask = ieee80211_set_bitrate_mask,
3997         .remain_on_channel = ieee80211_remain_on_channel,
3998         .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
3999         .mgmt_tx = ieee80211_mgmt_tx,
4000         .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
4001         .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
4002         .mgmt_frame_register = ieee80211_mgmt_frame_register,
4003         .set_antenna = ieee80211_set_antenna,
4004         .get_antenna = ieee80211_get_antenna,
4005         .set_ringparam = ieee80211_set_ringparam,
4006         .get_ringparam = ieee80211_get_ringparam,
4007         .set_rekey_data = ieee80211_set_rekey_data,
4008         .tdls_oper = ieee80211_tdls_oper,
4009         .tdls_mgmt = ieee80211_tdls_mgmt,
4010         .probe_client = ieee80211_probe_client,
4011         .set_noack_map = ieee80211_set_noack_map,
4012 #ifdef CONFIG_PM
4013         .set_wakeup = ieee80211_set_wakeup,
4014 #endif
4015         .get_et_sset_count = ieee80211_get_et_sset_count,
4016         .get_et_stats = ieee80211_get_et_stats,
4017         .get_et_strings = ieee80211_get_et_strings,
4018         .get_channel = ieee80211_cfg_get_channel,
4019         .start_radar_detection = ieee80211_start_radar_detection,
4020         .channel_switch = ieee80211_channel_switch,
4021         .set_qos_map = ieee80211_set_qos_map,
4022 };