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                         /*
  77                          * Prohibit MONITOR_FLAG_COOK_FRAMES to be
  78                          * changed while the interface is up.
  79                          * Else we would need to add a lot of cruft
  80                          * to update everything:
  81                          *      cooked_mntrs, monitor and all fif_* counters
  82                          *      reconfigure hardware
  83                          */
  84                         if ((*flags & MONITOR_FLAG_COOK_FRAMES) !=
  85                             (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES))
  86                                 return -EBUSY;
  87
  88                         ieee80211_adjust_monitor_flags(sdata, -1);
  89                         sdata->u.mntr_flags = *flags;
  90                         ieee80211_adjust_monitor_flags(sdata, 1);
  91
  92                         ieee80211_configure_filter(local);
  93                 } else {
  94                         /*
  95                          * Because the interface is down, ieee80211_do_stop
  96                          * and ieee80211_do_open take care of "everything"
  97                          * mentioned in the comment above.
  98                          */
  99                         sdata->u.mntr_flags = *flags;
 100                 }
 101         }
 102
 103         return 0;
 104 }
 105
 106 static int ieee80211_start_p2p_device(struct wiphy *wiphy,
 107                                       struct wireless_dev *wdev)
 108 {
 109         return ieee80211_do_open(wdev, true);
 110 }
 111
 112 static void ieee80211_stop_p2p_device(struct wiphy *wiphy,
 113                                       struct wireless_dev *wdev)
 114 {
 115         ieee80211_sdata_stop(IEEE80211_WDEV_TO_SUB_IF(wdev));
 116 }
 117
 118 static int ieee80211_set_noack_map(struct wiphy *wiphy,
 119                                   struct net_device *dev,
 120                                   u16 noack_map)
 121 {
 122         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 123
 124         sdata->noack_map = noack_map;
 125         return 0;
 126 }
 127
 128 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
 129                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 130                              struct key_params *params)
 131 {
 132         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 133         struct sta_info *sta = NULL;
 134         struct ieee80211_key *key;
 135         int err;
 136
 137         if (!ieee80211_sdata_running(sdata))
 138                 return -ENETDOWN;
 139
 140         /* reject WEP and TKIP keys if WEP failed to initialize */
 141         switch (params->cipher) {
 142         case WLAN_CIPHER_SUITE_WEP40:
 143         case WLAN_CIPHER_SUITE_TKIP:
 144         case WLAN_CIPHER_SUITE_WEP104:
 145                 if (IS_ERR(sdata->local->wep_tx_tfm))
 146                         return -EINVAL;
 147                 break;
 148         default:
 149                 break;
 150         }
 151
 152         key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
 153                                   params->key, params->seq_len, params->seq);
 154         if (IS_ERR(key))
 155                 return PTR_ERR(key);
 156
 157         if (pairwise)
 158                 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
 159
 160         mutex_lock(&sdata->local->sta_mtx);
 161
 162         if (mac_addr) {
 163                 if (ieee80211_vif_is_mesh(&sdata->vif))
 164                         sta = sta_info_get(sdata, mac_addr);
 165                 else
 166                         sta = sta_info_get_bss(sdata, mac_addr);
 167                 /*
 168                  * The ASSOC test makes sure the driver is ready to
 169                  * receive the key. When wpa_supplicant has roamed
 170                  * using FT, it attempts to set the key before
 171                  * association has completed, this rejects that attempt
 172                  * so it will set the key again after assocation.
 173                  *
 174                  * TODO: accept the key if we have a station entry and
 175                  *       add it to the device after the station.
 176                  */
 177                 if (!sta || !test_sta_flag(sta, WLAN_STA_ASSOC)) {
 178                         ieee80211_key_free(sdata->local, key);
 179                         err = -ENOENT;
 180                         goto out_unlock;
 181                 }
 182         }
 183
 184         switch (sdata->vif.type) {
 185         case NL80211_IFTYPE_STATION:
 186                 if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED)
 187                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 188                 break;
 189         case NL80211_IFTYPE_AP:
 190         case NL80211_IFTYPE_AP_VLAN:
 191                 /* Keys without a station are used for TX only */
 192                 if (key->sta && test_sta_flag(key->sta, WLAN_STA_MFP))
 193                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 194                 break;
 195         case NL80211_IFTYPE_ADHOC:
 196                 /* no MFP (yet) */
 197                 break;
 198         case NL80211_IFTYPE_MESH_POINT:
 199 #ifdef CONFIG_MAC80211_MESH
 200                 if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE)
 201                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 202                 break;
 203 #endif
 204         case NL80211_IFTYPE_WDS:
 205         case NL80211_IFTYPE_MONITOR:
 206         case NL80211_IFTYPE_P2P_DEVICE:
 207         case NL80211_IFTYPE_UNSPECIFIED:
 208         case NUM_NL80211_IFTYPES:
 209         case NL80211_IFTYPE_P2P_CLIENT:
 210         case NL80211_IFTYPE_P2P_GO:
 211                 /* shouldn't happen */
 212                 WARN_ON_ONCE(1);
 213                 break;
 214         }
 215
 216         err = ieee80211_key_link(key, sdata, sta);
 217         if (err)
 218                 ieee80211_key_free(sdata->local, key);
 219
 220  out_unlock:
 221         mutex_unlock(&sdata->local->sta_mtx);
 222
 223         return err;
 224 }
 225
 226 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
 227                              u8 key_idx, bool pairwise, const u8 *mac_addr)
 228 {
 229         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 230         struct ieee80211_local *local = sdata->local;
 231         struct sta_info *sta;
 232         struct ieee80211_key *key = NULL;
 233         int ret;
 234
 235         mutex_lock(&local->sta_mtx);
 236         mutex_lock(&local->key_mtx);
 237
 238         if (mac_addr) {
 239                 ret = -ENOENT;
 240
 241                 sta = sta_info_get_bss(sdata, mac_addr);
 242                 if (!sta)
 243                         goto out_unlock;
 244
 245                 if (pairwise)
 246                         key = key_mtx_dereference(local, sta->ptk);
 247                 else
 248                         key = key_mtx_dereference(local, sta->gtk[key_idx]);
 249         } else
 250                 key = key_mtx_dereference(local, sdata->keys[key_idx]);
 251
 252         if (!key) {
 253                 ret = -ENOENT;
 254                 goto out_unlock;
 255         }
 256
 257         __ieee80211_key_free(key);
 258
 259         ret = 0;
 260  out_unlock:
 261         mutex_unlock(&local->key_mtx);
 262         mutex_unlock(&local->sta_mtx);
 263
 264         return ret;
 265 }
 266
 267 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
 268                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 269                              void *cookie,
 270                              void (*callback)(void *cookie,
 271                                               struct key_params *params))
 272 {
 273         struct ieee80211_sub_if_data *sdata;
 274         struct sta_info *sta = NULL;
 275         u8 seq[6] = {0};
 276         struct key_params params;
 277         struct ieee80211_key *key = NULL;
 278         u64 pn64;
 279         u32 iv32;
 280         u16 iv16;
 281         int err = -ENOENT;
 282
 283         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 284
 285         rcu_read_lock();
 286
 287         if (mac_addr) {
 288                 sta = sta_info_get_bss(sdata, mac_addr);
 289                 if (!sta)
 290                         goto out;
 291
 292                 if (pairwise)
 293                         key = rcu_dereference(sta->ptk);
 294                 else if (key_idx < NUM_DEFAULT_KEYS)
 295                         key = rcu_dereference(sta->gtk[key_idx]);
 296         } else
 297                 key = rcu_dereference(sdata->keys[key_idx]);
 298
 299         if (!key)
 300                 goto out;
 301
 302         memset(&params, 0, sizeof(params));
 303
 304         params.cipher = key->conf.cipher;
 305
 306         switch (key->conf.cipher) {
 307         case WLAN_CIPHER_SUITE_TKIP:
 308                 iv32 = key->u.tkip.tx.iv32;
 309                 iv16 = key->u.tkip.tx.iv16;
 310
 311                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)
 312                         drv_get_tkip_seq(sdata->local,
 313                                          key->conf.hw_key_idx,
 314                                          &iv32, &iv16);
 315
 316                 seq[0] = iv16 & 0xff;
 317                 seq[1] = (iv16 >> 8) & 0xff;
 318                 seq[2] = iv32 & 0xff;
 319                 seq[3] = (iv32 >> 8) & 0xff;
 320                 seq[4] = (iv32 >> 16) & 0xff;
 321                 seq[5] = (iv32 >> 24) & 0xff;
 322                 params.seq = seq;
 323                 params.seq_len = 6;
 324                 break;
 325         case WLAN_CIPHER_SUITE_CCMP:
 326                 pn64 = atomic64_read(&key->u.ccmp.tx_pn);
 327                 seq[0] = pn64;
 328                 seq[1] = pn64 >> 8;
 329                 seq[2] = pn64 >> 16;
 330                 seq[3] = pn64 >> 24;
 331                 seq[4] = pn64 >> 32;
 332                 seq[5] = pn64 >> 40;
 333                 params.seq = seq;
 334                 params.seq_len = 6;
 335                 break;
 336         case WLAN_CIPHER_SUITE_AES_CMAC:
 337                 pn64 = atomic64_read(&key->u.aes_cmac.tx_pn);
 338                 seq[0] = pn64;
 339                 seq[1] = pn64 >> 8;
 340                 seq[2] = pn64 >> 16;
 341                 seq[3] = pn64 >> 24;
 342                 seq[4] = pn64 >> 32;
 343                 seq[5] = pn64 >> 40;
 344                 params.seq = seq;
 345                 params.seq_len = 6;
 346                 break;
 347         }
 348
 349         params.key = key->conf.key;
 350         params.key_len = key->conf.keylen;
 351
 352         callback(cookie, &params);
 353         err = 0;
 354
 355  out:
 356         rcu_read_unlock();
 357         return err;
 358 }
 359
 360 static int ieee80211_config_default_key(struct wiphy *wiphy,
 361                                         struct net_device *dev,
 362                                         u8 key_idx, bool uni,
 363                                         bool multi)
 364 {
 365         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 366
 367         ieee80211_set_default_key(sdata, key_idx, uni, multi);
 368
 369         return 0;
 370 }
 371
 372 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
 373                                              struct net_device *dev,
 374                                              u8 key_idx)
 375 {
 376         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 377
 378         ieee80211_set_default_mgmt_key(sdata, key_idx);
 379
 380         return 0;
 381 }
 382
 383 void sta_set_rate_info_tx(struct sta_info *sta,
 384                           const struct ieee80211_tx_rate *rate,
 385                           struct rate_info *rinfo)
 386 {
 387         rinfo->flags = 0;
 388         if (rate->flags & IEEE80211_TX_RC_MCS) {
 389                 rinfo->flags |= RATE_INFO_FLAGS_MCS;
 390                 rinfo->mcs = rate->idx;
 391         } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) {
 392                 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
 393                 rinfo->mcs = ieee80211_rate_get_vht_mcs(rate);
 394                 rinfo->nss = ieee80211_rate_get_vht_nss(rate);
 395         } else {
 396                 struct ieee80211_supported_band *sband;
 397                 sband = sta->local->hw.wiphy->bands[
 398                                 ieee80211_get_sdata_band(sta->sdata)];
 399                 rinfo->legacy = sband->bitrates[rate->idx].bitrate;
 400         }
 401         if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 402                 rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 403         if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
 404                 rinfo->flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH;
 405         if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
 406                 rinfo->flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH;
 407         if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
 408                 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
 409 }
 410
 411 void sta_set_rate_info_rx(struct sta_info *sta, struct rate_info *rinfo)
 412 {
 413         rinfo->flags = 0;
 414
 415         if (sta->last_rx_rate_flag & RX_FLAG_HT) {
 416                 rinfo->flags |= RATE_INFO_FLAGS_MCS;
 417                 rinfo->mcs = sta->last_rx_rate_idx;
 418         } else if (sta->last_rx_rate_flag & RX_FLAG_VHT) {
 419                 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
 420                 rinfo->nss = sta->last_rx_rate_vht_nss;
 421                 rinfo->mcs = sta->last_rx_rate_idx;
 422         } else {
 423                 struct ieee80211_supported_band *sband;
 424
 425                 sband = sta->local->hw.wiphy->bands[
 426                                 ieee80211_get_sdata_band(sta->sdata)];
 427                 rinfo->legacy =
 428                         sband->bitrates[sta->last_rx_rate_idx].bitrate;
 429         }
 430
 431         if (sta->last_rx_rate_flag & RX_FLAG_40MHZ)
 432                 rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 433         if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI)
 434                 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
 435         if (sta->last_rx_rate_flag & RX_FLAG_80MHZ)
 436                 rinfo->flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH;
 437         if (sta->last_rx_rate_flag & RX_FLAG_80P80MHZ)
 438                 rinfo->flags |= RATE_INFO_FLAGS_80P80_MHZ_WIDTH;
 439         if (sta->last_rx_rate_flag & RX_FLAG_160MHZ)
 440                 rinfo->flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH;
 441 }
 442
 443 static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
 444 {
 445         struct ieee80211_sub_if_data *sdata = sta->sdata;
 446         struct ieee80211_local *local = sdata->local;
 447         struct timespec uptime;
 448
 449         sinfo->generation = sdata->local->sta_generation;
 450
 451         sinfo->filled = STATION_INFO_INACTIVE_TIME |
 452                         STATION_INFO_RX_BYTES |
 453                         STATION_INFO_TX_BYTES |
 454                         STATION_INFO_RX_PACKETS |
 455                         STATION_INFO_TX_PACKETS |
 456                         STATION_INFO_TX_RETRIES |
 457                         STATION_INFO_TX_FAILED |
 458                         STATION_INFO_TX_BITRATE |
 459                         STATION_INFO_RX_BITRATE |
 460                         STATION_INFO_RX_DROP_MISC |
 461                         STATION_INFO_BSS_PARAM |
 462                         STATION_INFO_CONNECTED_TIME |
 463                         STATION_INFO_STA_FLAGS |
 464                         STATION_INFO_BEACON_LOSS_COUNT;
 465
 466         do_posix_clock_monotonic_gettime(&uptime);
 467         sinfo->connected_time = uptime.tv_sec - sta->last_connected;
 468
 469         sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx);
 470         sinfo->rx_bytes = sta->rx_bytes;
 471         sinfo->tx_bytes = sta->tx_bytes;
 472         sinfo->rx_packets = sta->rx_packets;
 473         sinfo->tx_packets = sta->tx_packets;
 474         sinfo->tx_retries = sta->tx_retry_count;
 475         sinfo->tx_failed = sta->tx_retry_failed;
 476         sinfo->rx_dropped_misc = sta->rx_dropped;
 477         sinfo->beacon_loss_count = sta->beacon_loss_count;
 478
 479         if ((sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) ||
 480             (sta->local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)) {
 481                 sinfo->filled |= STATION_INFO_SIGNAL | STATION_INFO_SIGNAL_AVG;
 482                 if (!local->ops->get_rssi ||
 483                     drv_get_rssi(local, sdata, &sta->sta, &sinfo->signal))
 484                         sinfo->signal = (s8)sta->last_signal;
 485                 sinfo->signal_avg = (s8) -ewma_read(&sta->avg_signal);
 486         }
 487
 488         sta_set_rate_info_tx(sta, &sta->last_tx_rate, &sinfo->txrate);
 489         sta_set_rate_info_rx(sta, &sinfo->rxrate);
 490
 491         if (ieee80211_vif_is_mesh(&sdata->vif)) {
 492 #ifdef CONFIG_MAC80211_MESH
 493                 sinfo->filled |= STATION_INFO_LLID |
 494                                  STATION_INFO_PLID |
 495                                  STATION_INFO_PLINK_STATE;
 496
 497                 sinfo->llid = le16_to_cpu(sta->llid);
 498                 sinfo->plid = le16_to_cpu(sta->plid);
 499                 sinfo->plink_state = sta->plink_state;
 500                 if (test_sta_flag(sta, WLAN_STA_TOFFSET_KNOWN)) {
 501                         sinfo->filled |= STATION_INFO_T_OFFSET;
 502                         sinfo->t_offset = sta->t_offset;
 503                 }
 504 #endif
 505         }
 506
 507         sinfo->bss_param.flags = 0;
 508         if (sdata->vif.bss_conf.use_cts_prot)
 509                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_CTS_PROT;
 510         if (sdata->vif.bss_conf.use_short_preamble)
 511                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_PREAMBLE;
 512         if (sdata->vif.bss_conf.use_short_slot)
 513                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME;
 514         sinfo->bss_param.dtim_period = sdata->local->hw.conf.ps_dtim_period;
 515         sinfo->bss_param.beacon_interval = sdata->vif.bss_conf.beacon_int;
 516
 517         sinfo->sta_flags.set = 0;
 518         sinfo->sta_flags.mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
 519                                 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
 520                                 BIT(NL80211_STA_FLAG_WME) |
 521                                 BIT(NL80211_STA_FLAG_MFP) |
 522                                 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
 523                                 BIT(NL80211_STA_FLAG_TDLS_PEER);
 524         if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
 525                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHORIZED);
 526         if (test_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE))
 527                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
 528         if (test_sta_flag(sta, WLAN_STA_WME))
 529                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_WME);
 530         if (test_sta_flag(sta, WLAN_STA_MFP))
 531                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_MFP);
 532         if (test_sta_flag(sta, WLAN_STA_AUTH))
 533                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHENTICATED);
 534         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER))
 535                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_TDLS_PEER);
 536 }
 537
 538 static const char ieee80211_gstrings_sta_stats[][ETH_GSTRING_LEN] = {
 539         "rx_packets", "rx_bytes", "wep_weak_iv_count",
 540         "rx_duplicates", "rx_fragments", "rx_dropped",
 541         "tx_packets", "tx_bytes", "tx_fragments",
 542         "tx_filtered", "tx_retry_failed", "tx_retries",
 543         "beacon_loss", "sta_state", "txrate", "rxrate", "signal",
 544         "channel", "noise", "ch_time", "ch_time_busy",
 545         "ch_time_ext_busy", "ch_time_rx", "ch_time_tx"
 546 };
 547 #define STA_STATS_LEN   ARRAY_SIZE(ieee80211_gstrings_sta_stats)
 548
 549 static int ieee80211_get_et_sset_count(struct wiphy *wiphy,
 550                                        struct net_device *dev,
 551                                        int sset)
 552 {
 553         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 554         int rv = 0;
 555
 556         if (sset == ETH_SS_STATS)
 557                 rv += STA_STATS_LEN;
 558
 559         rv += drv_get_et_sset_count(sdata, sset);
 560
 561         if (rv == 0)
 562                 return -EOPNOTSUPP;
 563         return rv;
 564 }
 565
 566 static void ieee80211_get_et_stats(struct wiphy *wiphy,
 567                                    struct net_device *dev,
 568                                    struct ethtool_stats *stats,
 569                                    u64 *data)
 570 {
 571         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 572         struct ieee80211_chanctx_conf *chanctx_conf;
 573         struct ieee80211_channel *channel;
 574         struct sta_info *sta;
 575         struct ieee80211_local *local = sdata->local;
 576         struct station_info sinfo;
 577         struct survey_info survey;
 578         int i, q;
 579 #define STA_STATS_SURVEY_LEN 7
 580
 581         memset(data, 0, sizeof(u64) * STA_STATS_LEN);
 582
 583 #define ADD_STA_STATS(sta)                              \
 584         do {                                            \
 585                 data[i++] += sta->rx_packets;           \
 586                 data[i++] += sta->rx_bytes;             \
 587                 data[i++] += sta->wep_weak_iv_count;    \
 588                 data[i++] += sta->num_duplicates;       \
 589                 data[i++] += sta->rx_fragments;         \
 590                 data[i++] += sta->rx_dropped;           \
 591                                                         \
 592                 data[i++] += sta->tx_packets;           \
 593                 data[i++] += sta->tx_bytes;             \
 594                 data[i++] += sta->tx_fragments;         \
 595                 data[i++] += sta->tx_filtered_count;    \
 596                 data[i++] += sta->tx_retry_failed;      \
 597                 data[i++] += sta->tx_retry_count;       \
 598                 data[i++] += sta->beacon_loss_count;    \
 599         } while (0)
 600
 601         /* For Managed stations, find the single station based on BSSID
 602          * and use that.  For interface types, iterate through all available
 603          * stations and add stats for any station that is assigned to this
 604          * network device.
 605          */
 606
 607         mutex_lock(&local->sta_mtx);
 608
 609         if (sdata->vif.type == NL80211_IFTYPE_STATION) {
 610                 sta = sta_info_get_bss(sdata, sdata->u.mgd.bssid);
 611
 612                 if (!(sta && !WARN_ON(sta->sdata->dev != dev)))
 613                         goto do_survey;
 614
 615                 i = 0;
 616                 ADD_STA_STATS(sta);
 617
 618                 data[i++] = sta->sta_state;
 619
 620                 sinfo.filled = 0;
 621                 sta_set_sinfo(sta, &sinfo);
 622
 623                 if (sinfo.filled & STATION_INFO_TX_BITRATE)
 624                         data[i] = 100000 *
 625                                 cfg80211_calculate_bitrate(&sinfo.txrate);
 626                 i++;
 627                 if (sinfo.filled & STATION_INFO_RX_BITRATE)
 628                         data[i] = 100000 *
 629                                 cfg80211_calculate_bitrate(&sinfo.rxrate);
 630                 i++;
 631
 632                 if (sinfo.filled & STATION_INFO_SIGNAL_AVG)
 633                         data[i] = (u8)sinfo.signal_avg;
 634                 i++;
 635         } else {
 636                 list_for_each_entry(sta, &local->sta_list, list) {
 637                         /* Make sure this station belongs to the proper dev */
 638                         if (sta->sdata->dev != dev)
 639                                 continue;
 640
 641                         i = 0;
 642                         ADD_STA_STATS(sta);
 643                 }
 644         }
 645
 646 do_survey:
 647         i = STA_STATS_LEN - STA_STATS_SURVEY_LEN;
 648         /* Get survey stats for current channel */
 649         survey.filled = 0;
 650
 651         rcu_read_lock();
 652         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
 653         if (chanctx_conf)
 654                 channel = chanctx_conf->def.chan;
 655         else
 656                 channel = NULL;
 657         rcu_read_unlock();
 658
 659         if (channel) {
 660                 q = 0;
 661                 do {
 662                         survey.filled = 0;
 663                         if (drv_get_survey(local, q, &survey) != 0) {
 664                                 survey.filled = 0;
 665                                 break;
 666                         }
 667                         q++;
 668                 } while (channel != survey.channel);
 669         }
 670
 671         if (survey.filled)
 672                 data[i++] = survey.channel->center_freq;
 673         else
 674                 data[i++] = 0;
 675         if (survey.filled & SURVEY_INFO_NOISE_DBM)
 676                 data[i++] = (u8)survey.noise;
 677         else
 678                 data[i++] = -1LL;
 679         if (survey.filled & SURVEY_INFO_CHANNEL_TIME)
 680                 data[i++] = survey.channel_time;
 681         else
 682                 data[i++] = -1LL;
 683         if (survey.filled & SURVEY_INFO_CHANNEL_TIME_BUSY)
 684                 data[i++] = survey.channel_time_busy;
 685         else
 686                 data[i++] = -1LL;
 687         if (survey.filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY)
 688                 data[i++] = survey.channel_time_ext_busy;
 689         else
 690                 data[i++] = -1LL;
 691         if (survey.filled & SURVEY_INFO_CHANNEL_TIME_RX)
 692                 data[i++] = survey.channel_time_rx;
 693         else
 694                 data[i++] = -1LL;
 695         if (survey.filled & SURVEY_INFO_CHANNEL_TIME_TX)
 696                 data[i++] = survey.channel_time_tx;
 697         else
 698                 data[i++] = -1LL;
 699
 700         mutex_unlock(&local->sta_mtx);
 701
 702         if (WARN_ON(i != STA_STATS_LEN))
 703                 return;
 704
 705         drv_get_et_stats(sdata, stats, &(data[STA_STATS_LEN]));
 706 }
 707
 708 static void ieee80211_get_et_strings(struct wiphy *wiphy,
 709                                      struct net_device *dev,
 710                                      u32 sset, u8 *data)
 711 {
 712         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 713         int sz_sta_stats = 0;
 714
 715         if (sset == ETH_SS_STATS) {
 716                 sz_sta_stats = sizeof(ieee80211_gstrings_sta_stats);
 717                 memcpy(data, *ieee80211_gstrings_sta_stats, sz_sta_stats);
 718         }
 719         drv_get_et_strings(sdata, sset, &(data[sz_sta_stats]));
 720 }
 721
 722 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
 723                                  int idx, u8 *mac, struct station_info *sinfo)
 724 {
 725         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 726         struct ieee80211_local *local = sdata->local;
 727         struct sta_info *sta;
 728         int ret = -ENOENT;
 729
 730         mutex_lock(&local->sta_mtx);
 731
 732         sta = sta_info_get_by_idx(sdata, idx);
 733         if (sta) {
 734                 ret = 0;
 735                 memcpy(mac, sta->sta.addr, ETH_ALEN);
 736                 sta_set_sinfo(sta, sinfo);
 737         }
 738
 739         mutex_unlock(&local->sta_mtx);
 740
 741         return ret;
 742 }
 743
 744 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
 745                                  int idx, struct survey_info *survey)
 746 {
 747         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 748
 749         return drv_get_survey(local, idx, survey);
 750 }
 751
 752 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 753                                  u8 *mac, struct station_info *sinfo)
 754 {
 755         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 756         struct ieee80211_local *local = sdata->local;
 757         struct sta_info *sta;
 758         int ret = -ENOENT;
 759
 760         mutex_lock(&local->sta_mtx);
 761
 762         sta = sta_info_get_bss(sdata, mac);
 763         if (sta) {
 764                 ret = 0;
 765                 sta_set_sinfo(sta, sinfo);
 766         }
 767
 768         mutex_unlock(&local->sta_mtx);
 769
 770         return ret;
 771 }
 772
 773 static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
 774                                          struct cfg80211_chan_def *chandef)
 775 {
 776         struct ieee80211_local *local = wiphy_priv(wiphy);
 777         struct ieee80211_sub_if_data *sdata;
 778         int ret = 0;
 779
 780         if (cfg80211_chandef_identical(&local->monitor_chandef, chandef))
 781                 return 0;
 782
 783         mutex_lock(&local->iflist_mtx);
 784         if (local->use_chanctx) {
 785                 sdata = rcu_dereference_protected(
 786                                 local->monitor_sdata,
 787                                 lockdep_is_held(&local->iflist_mtx));
 788                 if (sdata) {
 789                         ieee80211_vif_release_channel(sdata);
 790                         ret = ieee80211_vif_use_channel(sdata, chandef,
 791                                         IEEE80211_CHANCTX_EXCLUSIVE);
 792                 }
 793         } else if (local->open_count == local->monitors) {
 794                 local->_oper_channel = chandef->chan;
 795                 local->_oper_channel_type = cfg80211_get_chandef_type(chandef);
 796                 ieee80211_hw_config(local, 0);
 797         }
 798
 799         if (ret == 0)
 800                 local->monitor_chandef = *chandef;
 801         mutex_unlock(&local->iflist_mtx);
 802
 803         return ret;
 804 }
 805
 806 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
 807                                     const u8 *resp, size_t resp_len)
 808 {
 809         struct probe_resp *new, *old;
 810
 811         if (!resp || !resp_len)
 812                 return 1;
 813
 814         old = rtnl_dereference(sdata->u.ap.probe_resp);
 815
 816         new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL);
 817         if (!new)
 818                 return -ENOMEM;
 819
 820         new->len = resp_len;
 821         memcpy(new->data, resp, resp_len);
 822
 823         rcu_assign_pointer(sdata->u.ap.probe_resp, new);
 824         if (old)
 825                 kfree_rcu(old, rcu_head);
 826
 827         return 0;
 828 }
 829
 830 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
 831                                    struct cfg80211_beacon_data *params)
 832 {
 833         struct beacon_data *new, *old;
 834         int new_head_len, new_tail_len;
 835         int size, err;
 836         u32 changed = BSS_CHANGED_BEACON;
 837
 838         old = rtnl_dereference(sdata->u.ap.beacon);
 839
 840         /* Need to have a beacon head if we don't have one yet */
 841         if (!params->head && !old)
 842                 return -EINVAL;
 843
 844         /* new or old head? */
 845         if (params->head)
 846                 new_head_len = params->head_len;
 847         else
 848                 new_head_len = old->head_len;
 849
 850         /* new or old tail? */
 851         if (params->tail || !old)
 852                 /* params->tail_len will be zero for !params->tail */
 853                 new_tail_len = params->tail_len;
 854         else
 855                 new_tail_len = old->tail_len;
 856
 857         size = sizeof(*new) + new_head_len + new_tail_len;
 858
 859         new = kzalloc(size, GFP_KERNEL);
 860         if (!new)
 861                 return -ENOMEM;
 862
 863         /* start filling the new info now */
 864
 865         /*
 866          * pointers go into the block we allocated,
 867          * memory is | beacon_data | head | tail |
 868          */
 869         new->head = ((u8 *) new) + sizeof(*new);
 870         new->tail = new->head + new_head_len;
 871         new->head_len = new_head_len;
 872         new->tail_len = new_tail_len;
 873
 874         /* copy in head */
 875         if (params->head)
 876                 memcpy(new->head, params->head, new_head_len);
 877         else
 878                 memcpy(new->head, old->head, new_head_len);
 879
 880         /* copy in optional tail */
 881         if (params->tail)
 882                 memcpy(new->tail, params->tail, new_tail_len);
 883         else
 884                 if (old)
 885                         memcpy(new->tail, old->tail, new_tail_len);
 886
 887         err = ieee80211_set_probe_resp(sdata, params->probe_resp,
 888                                        params->probe_resp_len);
 889         if (err < 0)
 890                 return err;
 891         if (err == 0)
 892                 changed |= BSS_CHANGED_AP_PROBE_RESP;
 893
 894         rcu_assign_pointer(sdata->u.ap.beacon, new);
 895
 896         if (old)
 897                 kfree_rcu(old, rcu_head);
 898
 899         return changed;
 900 }
 901
 902 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
 903                               struct cfg80211_ap_settings *params)
 904 {
 905         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 906         struct beacon_data *old;
 907         struct ieee80211_sub_if_data *vlan;
 908         u32 changed = BSS_CHANGED_BEACON_INT |
 909                       BSS_CHANGED_BEACON_ENABLED |
 910                       BSS_CHANGED_BEACON |
 911                       BSS_CHANGED_SSID |
 912                       BSS_CHANGED_P2P_PS;
 913         int err;
 914
 915         old = rtnl_dereference(sdata->u.ap.beacon);
 916         if (old)
 917                 return -EALREADY;
 918
 919         /* TODO: make hostapd tell us what it wants */
 920         sdata->smps_mode = IEEE80211_SMPS_OFF;
 921         sdata->needed_rx_chains = sdata->local->rx_chains;
 922
 923         err = ieee80211_vif_use_channel(sdata, &params->chandef,
 924                                         IEEE80211_CHANCTX_SHARED);
 925         if (err)
 926                 return err;
 927
 928         /*
 929          * Apply control port protocol, this allows us to
 930          * not encrypt dynamic WEP control frames.
 931          */
 932         sdata->control_port_protocol = params->crypto.control_port_ethertype;
 933         sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
 934         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
 935                 vlan->control_port_protocol =
 936                         params->crypto.control_port_ethertype;
 937                 vlan->control_port_no_encrypt =
 938                         params->crypto.control_port_no_encrypt;
 939         }
 940
 941         sdata->vif.bss_conf.beacon_int = params->beacon_interval;
 942         sdata->vif.bss_conf.dtim_period = params->dtim_period;
 943
 944         sdata->vif.bss_conf.ssid_len = params->ssid_len;
 945         if (params->ssid_len)
 946                 memcpy(sdata->vif.bss_conf.ssid, params->ssid,
 947                        params->ssid_len);
 948         sdata->vif.bss_conf.hidden_ssid =
 949                 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
 950
 951         sdata->vif.bss_conf.p2p_ctwindow = params->p2p_ctwindow;
 952         sdata->vif.bss_conf.p2p_oppps = params->p2p_opp_ps;
 953
 954         err = ieee80211_assign_beacon(sdata, &params->beacon);
 955         if (err < 0)
 956                 return err;
 957         changed |= err;
 958
 959         err = drv_start_ap(sdata->local, sdata);
 960         if (err) {
 961                 old = rtnl_dereference(sdata->u.ap.beacon);
 962                 if (old)
 963                         kfree_rcu(old, rcu_head);
 964                 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
 965                 return err;
 966         }
 967
 968         ieee80211_bss_info_change_notify(sdata, changed);
 969
 970         netif_carrier_on(dev);
 971         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
 972                 netif_carrier_on(vlan->dev);
 973
 974         return 0;
 975 }
 976
 977 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
 978                                    struct cfg80211_beacon_data *params)
 979 {
 980         struct ieee80211_sub_if_data *sdata;
 981         struct beacon_data *old;
 982         int err;
 983
 984         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 985
 986         old = rtnl_dereference(sdata->u.ap.beacon);
 987         if (!old)
 988                 return -ENOENT;
 989
 990         err = ieee80211_assign_beacon(sdata, params);
 991         if (err < 0)
 992                 return err;
 993         ieee80211_bss_info_change_notify(sdata, err);
 994         return 0;
 995 }
 996
 997 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
 998 {
 999         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1000         struct ieee80211_sub_if_data *vlan;
1001         struct ieee80211_local *local = sdata->local;
1002         struct beacon_data *old_beacon;
1003         struct probe_resp *old_probe_resp;
1004
1005         old_beacon = rtnl_dereference(sdata->u.ap.beacon);
1006         if (!old_beacon)
1007                 return -ENOENT;
1008         old_probe_resp = rtnl_dereference(sdata->u.ap.probe_resp);
1009
1010         /* turn off carrier for this interface and dependent VLANs */
1011         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1012                 netif_carrier_off(vlan->dev);
1013         netif_carrier_off(dev);
1014
1015         /* remove beacon and probe response */
1016         RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
1017         RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL);
1018         kfree_rcu(old_beacon, rcu_head);
1019         if (old_probe_resp)
1020                 kfree_rcu(old_probe_resp, rcu_head);
1021
1022         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1023                 sta_info_flush(local, vlan);
1024         sta_info_flush(local, sdata);
1025         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
1026
1027         drv_stop_ap(sdata->local, sdata);
1028
1029         /* free all potentially still buffered bcast frames */
1030         local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf);
1031         skb_queue_purge(&sdata->u.ap.ps.bc_buf);
1032
1033         ieee80211_vif_release_channel(sdata);
1034
1035         return 0;
1036 }
1037
1038 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
1039 struct iapp_layer2_update {
1040         u8 da[ETH_ALEN];        /* broadcast */
1041         u8 sa[ETH_ALEN];        /* STA addr */
1042         __be16 len;             /* 6 */
1043         u8 dsap;                /* 0 */
1044         u8 ssap;                /* 0 */
1045         u8 control;
1046         u8 xid_info[3];
1047 } __packed;
1048
1049 static void ieee80211_send_layer2_update(struct sta_info *sta)
1050 {
1051         struct iapp_layer2_update *msg;
1052         struct sk_buff *skb;
1053
1054         /* Send Level 2 Update Frame to update forwarding tables in layer 2
1055          * bridge devices */
1056
1057         skb = dev_alloc_skb(sizeof(*msg));
1058         if (!skb)
1059                 return;
1060         msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
1061
1062         /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
1063          * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
1064
1065         eth_broadcast_addr(msg->da);
1066         memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
1067         msg->len = htons(6);
1068         msg->dsap = 0;
1069         msg->ssap = 0x01;       /* NULL LSAP, CR Bit: Response */
1070         msg->control = 0xaf;    /* XID response lsb.1111F101.
1071                                  * F=0 (no poll command; unsolicited frame) */
1072         msg->xid_info[0] = 0x81;        /* XID format identifier */
1073         msg->xid_info[1] = 1;   /* LLC types/classes: Type 1 LLC */
1074         msg->xid_info[2] = 0;   /* XID sender's receive window size (RW) */
1075
1076         skb->dev = sta->sdata->dev;
1077         skb->protocol = eth_type_trans(skb, sta->sdata->dev);
1078         memset(skb->cb, 0, sizeof(skb->cb));
1079         netif_rx_ni(skb);
1080 }
1081
1082 static int sta_apply_parameters(struct ieee80211_local *local,
1083                                 struct sta_info *sta,
1084                                 struct station_parameters *params)
1085 {
1086         int ret = 0;
1087         u32 rates;
1088         int i, j;
1089         struct ieee80211_supported_band *sband;
1090         struct ieee80211_sub_if_data *sdata = sta->sdata;
1091         enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
1092         u32 mask, set;
1093
1094         sband = local->hw.wiphy->bands[band];
1095
1096         mask = params->sta_flags_mask;
1097         set = params->sta_flags_set;
1098
1099         /*
1100          * In mesh mode, we can clear AUTHENTICATED flag but must
1101          * also make ASSOCIATED follow appropriately for the driver
1102          * API. See also below, after AUTHORIZED changes.
1103          */
1104         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) {
1105                 /* cfg80211 should not allow this in non-mesh modes */
1106                 if (WARN_ON(!ieee80211_vif_is_mesh(&sdata->vif)))
1107                         return -EINVAL;
1108
1109                 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1110                     !test_sta_flag(sta, WLAN_STA_AUTH)) {
1111                         ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1112                         if (ret)
1113                                 return ret;
1114                         ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1115                         if (ret)
1116                                 return ret;
1117                 }
1118         }
1119
1120         if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1121                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
1122                         ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
1123                 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1124                         ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1125                 if (ret)
1126                         return ret;
1127         }
1128
1129         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) {
1130                 /* cfg80211 should not allow this in non-mesh modes */
1131                 if (WARN_ON(!ieee80211_vif_is_mesh(&sdata->vif)))
1132                         return -EINVAL;
1133
1134                 if (!(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
1135                     test_sta_flag(sta, WLAN_STA_AUTH)) {
1136                         ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1137                         if (ret)
1138                                 return ret;
1139                         ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
1140                         if (ret)
1141                                 return ret;
1142                 }
1143         }
1144
1145
1146         if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
1147                 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
1148                         set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1149                 else
1150                         clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1151         }
1152
1153         if (mask & BIT(NL80211_STA_FLAG_WME)) {
1154                 if (set & BIT(NL80211_STA_FLAG_WME)) {
1155                         set_sta_flag(sta, WLAN_STA_WME);
1156                         sta->sta.wme = true;
1157                 } else {
1158                         clear_sta_flag(sta, WLAN_STA_WME);
1159                         sta->sta.wme = false;
1160                 }
1161         }
1162
1163         if (mask & BIT(NL80211_STA_FLAG_MFP)) {
1164                 if (set & BIT(NL80211_STA_FLAG_MFP))
1165                         set_sta_flag(sta, WLAN_STA_MFP);
1166                 else
1167                         clear_sta_flag(sta, WLAN_STA_MFP);
1168         }
1169
1170         if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
1171                 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1172                         set_sta_flag(sta, WLAN_STA_TDLS_PEER);
1173                 else
1174                         clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1175         }
1176
1177         if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
1178                 sta->sta.uapsd_queues = params->uapsd_queues;
1179                 sta->sta.max_sp = params->max_sp;
1180         }
1181
1182         /*
1183          * cfg80211 validates this (1-2007) and allows setting the AID
1184          * only when creating a new station entry
1185          */
1186         if (params->aid)
1187                 sta->sta.aid = params->aid;
1188
1189         /*
1190          * FIXME: updating the following information is racy when this
1191          *        function is called from ieee80211_change_station().
1192          *        However, all this information should be static so
1193          *        maybe we should just reject attemps to change it.
1194          */
1195
1196         if (params->listen_interval >= 0)
1197                 sta->listen_interval = params->listen_interval;
1198
1199         if (params->supported_rates) {
1200                 rates = 0;
1201
1202                 for (i = 0; i < params->supported_rates_len; i++) {
1203                         int rate = (params->supported_rates[i] & 0x7f) * 5;
1204                         for (j = 0; j < sband->n_bitrates; j++) {
1205                                 if (sband->bitrates[j].bitrate == rate)
1206                                         rates |= BIT(j);
1207                         }
1208                 }
1209                 sta->sta.supp_rates[band] = rates;
1210         }
1211
1212         if (params->ht_capa)
1213                 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1214                                                   params->ht_capa,
1215                                                   &sta->sta.ht_cap);
1216
1217         if (params->vht_capa)
1218                 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
1219                                                     params->vht_capa,
1220                                                     &sta->sta.vht_cap);
1221
1222         if (ieee80211_vif_is_mesh(&sdata->vif)) {
1223 #ifdef CONFIG_MAC80211_MESH
1224                 if (sdata->u.mesh.security & IEEE80211_MESH_SEC_SECURED)
1225                         switch (params->plink_state) {
1226                         case NL80211_PLINK_LISTEN:
1227                         case NL80211_PLINK_ESTAB:
1228                         case NL80211_PLINK_BLOCKED:
1229                                 sta->plink_state = params->plink_state;
1230                                 break;
1231                         default:
1232                                 /*  nothing  */
1233                                 break;
1234                         }
1235                 else
1236                         switch (params->plink_action) {
1237                         case PLINK_ACTION_OPEN:
1238                                 mesh_plink_open(sta);
1239                                 break;
1240                         case PLINK_ACTION_BLOCK:
1241                                 mesh_plink_block(sta);
1242                                 break;
1243                         }
1244 #endif
1245         }
1246
1247         return 0;
1248 }
1249
1250 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1251                                  u8 *mac, struct station_parameters *params)
1252 {
1253         struct ieee80211_local *local = wiphy_priv(wiphy);
1254         struct sta_info *sta;
1255         struct ieee80211_sub_if_data *sdata;
1256         int err;
1257         int layer2_update;
1258
1259         if (params->vlan) {
1260                 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1261
1262                 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1263                     sdata->vif.type != NL80211_IFTYPE_AP)
1264                         return -EINVAL;
1265         } else
1266                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1267
1268         if (ether_addr_equal(mac, sdata->vif.addr))
1269                 return -EINVAL;
1270
1271         if (is_multicast_ether_addr(mac))
1272                 return -EINVAL;
1273
1274         sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
1275         if (!sta)
1276                 return -ENOMEM;
1277
1278         sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
1279         sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC);
1280
1281         err = sta_apply_parameters(local, sta, params);
1282         if (err) {
1283                 sta_info_free(local, sta);
1284                 return err;
1285         }
1286
1287         /*
1288          * for TDLS, rate control should be initialized only when supported
1289          * rates are known.
1290          */
1291         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER))
1292                 rate_control_rate_init(sta);
1293
1294         layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
1295                 sdata->vif.type == NL80211_IFTYPE_AP;
1296
1297         err = sta_info_insert_rcu(sta);
1298         if (err) {
1299                 rcu_read_unlock();
1300                 return err;
1301         }
1302
1303         if (layer2_update)
1304                 ieee80211_send_layer2_update(sta);
1305
1306         rcu_read_unlock();
1307
1308         return 0;
1309 }
1310
1311 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1312                                  u8 *mac)
1313 {
1314         struct ieee80211_local *local = wiphy_priv(wiphy);
1315         struct ieee80211_sub_if_data *sdata;
1316
1317         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1318
1319         if (mac)
1320                 return sta_info_destroy_addr_bss(sdata, mac);
1321
1322         sta_info_flush(local, sdata);
1323         return 0;
1324 }
1325
1326 static int ieee80211_change_station(struct wiphy *wiphy,
1327                                     struct net_device *dev,
1328                                     u8 *mac,
1329                                     struct station_parameters *params)
1330 {
1331         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1332         struct ieee80211_local *local = wiphy_priv(wiphy);
1333         struct sta_info *sta;
1334         struct ieee80211_sub_if_data *vlansdata;
1335         int err;
1336
1337         mutex_lock(&local->sta_mtx);
1338
1339         sta = sta_info_get_bss(sdata, mac);
1340         if (!sta) {
1341                 mutex_unlock(&local->sta_mtx);
1342                 return -ENOENT;
1343         }
1344
1345         /* in station mode, supported rates are only valid with TDLS */
1346         if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1347             params->supported_rates &&
1348             !test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1349                 mutex_unlock(&local->sta_mtx);
1350                 return -EINVAL;
1351         }
1352
1353         if (params->vlan && params->vlan != sta->sdata->dev) {
1354                 bool prev_4addr = false;
1355                 bool new_4addr = false;
1356
1357                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1358
1359                 if (vlansdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1360                     vlansdata->vif.type != NL80211_IFTYPE_AP) {
1361                         mutex_unlock(&local->sta_mtx);
1362                         return -EINVAL;
1363                 }
1364
1365                 if (params->vlan->ieee80211_ptr->use_4addr) {
1366                         if (vlansdata->u.vlan.sta) {
1367                                 mutex_unlock(&local->sta_mtx);
1368                                 return -EBUSY;
1369                         }
1370
1371                         rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1372                         new_4addr = true;
1373                 }
1374
1375                 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
1376                     sta->sdata->u.vlan.sta) {
1377                         rcu_assign_pointer(sta->sdata->u.vlan.sta, NULL);
1378                         prev_4addr = true;
1379                 }
1380
1381                 sta->sdata = vlansdata;
1382
1383                 if (sta->sta_state == IEEE80211_STA_AUTHORIZED &&
1384                     prev_4addr != new_4addr) {
1385                         if (new_4addr)
1386                                 atomic_dec(&sta->sdata->bss->num_mcast_sta);
1387                         else
1388                                 atomic_inc(&sta->sdata->bss->num_mcast_sta);
1389                 }
1390
1391                 ieee80211_send_layer2_update(sta);
1392         }
1393
1394         err = sta_apply_parameters(local, sta, params);
1395         if (err) {
1396                 mutex_unlock(&local->sta_mtx);
1397                 return err;
1398         }
1399
1400         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) && params->supported_rates)
1401                 rate_control_rate_init(sta);
1402
1403         mutex_unlock(&local->sta_mtx);
1404
1405         if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1406             params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1407                 ieee80211_recalc_ps(local, -1);
1408                 ieee80211_recalc_ps_vif(sdata);
1409         }
1410         return 0;
1411 }
1412
1413 #ifdef CONFIG_MAC80211_MESH
1414 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1415                                  u8 *dst, u8 *next_hop)
1416 {
1417         struct ieee80211_sub_if_data *sdata;
1418         struct mesh_path *mpath;
1419         struct sta_info *sta;
1420         int err;
1421
1422         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1423
1424         rcu_read_lock();
1425         sta = sta_info_get(sdata, next_hop);
1426         if (!sta) {
1427                 rcu_read_unlock();
1428                 return -ENOENT;
1429         }
1430
1431         err = mesh_path_add(dst, sdata);
1432         if (err) {
1433                 rcu_read_unlock();
1434                 return err;
1435         }
1436
1437         mpath = mesh_path_lookup(dst, sdata);
1438         if (!mpath) {
1439                 rcu_read_unlock();
1440                 return -ENXIO;
1441         }
1442         mesh_path_fix_nexthop(mpath, sta);
1443
1444         rcu_read_unlock();
1445         return 0;
1446 }
1447
1448 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1449                                  u8 *dst)
1450 {
1451         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1452
1453         if (dst)
1454                 return mesh_path_del(dst, sdata);
1455
1456         mesh_path_flush_by_iface(sdata);
1457         return 0;
1458 }
1459
1460 static int ieee80211_change_mpath(struct wiphy *wiphy,
1461                                     struct net_device *dev,
1462                                     u8 *dst, u8 *next_hop)
1463 {
1464         struct ieee80211_sub_if_data *sdata;
1465         struct mesh_path *mpath;
1466         struct sta_info *sta;
1467
1468         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1469
1470         rcu_read_lock();
1471
1472         sta = sta_info_get(sdata, next_hop);
1473         if (!sta) {
1474                 rcu_read_unlock();
1475                 return -ENOENT;
1476         }
1477
1478         mpath = mesh_path_lookup(dst, sdata);
1479         if (!mpath) {
1480                 rcu_read_unlock();
1481                 return -ENOENT;
1482         }
1483
1484         mesh_path_fix_nexthop(mpath, sta);
1485
1486         rcu_read_unlock();
1487         return 0;
1488 }
1489
1490 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1491                             struct mpath_info *pinfo)
1492 {
1493         struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1494
1495         if (next_hop_sta)
1496                 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1497         else
1498                 memset(next_hop, 0, ETH_ALEN);
1499
1500         memset(pinfo, 0, sizeof(*pinfo));
1501
1502         pinfo->generation = mesh_paths_generation;
1503
1504         pinfo->filled = MPATH_INFO_FRAME_QLEN |
1505                         MPATH_INFO_SN |
1506                         MPATH_INFO_METRIC |
1507                         MPATH_INFO_EXPTIME |
1508                         MPATH_INFO_DISCOVERY_TIMEOUT |
1509                         MPATH_INFO_DISCOVERY_RETRIES |
1510                         MPATH_INFO_FLAGS;
1511
1512         pinfo->frame_qlen = mpath->frame_queue.qlen;
1513         pinfo->sn = mpath->sn;
1514         pinfo->metric = mpath->metric;
1515         if (time_before(jiffies, mpath->exp_time))
1516                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1517         pinfo->discovery_timeout =
1518                         jiffies_to_msecs(mpath->discovery_timeout);
1519         pinfo->discovery_retries = mpath->discovery_retries;
1520         if (mpath->flags & MESH_PATH_ACTIVE)
1521                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1522         if (mpath->flags & MESH_PATH_RESOLVING)
1523                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1524         if (mpath->flags & MESH_PATH_SN_VALID)
1525                 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1526         if (mpath->flags & MESH_PATH_FIXED)
1527                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1528         if (mpath->flags & MESH_PATH_RESOLVED)
1529                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
1530 }
1531
1532 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1533                                u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1534
1535 {
1536         struct ieee80211_sub_if_data *sdata;
1537         struct mesh_path *mpath;
1538
1539         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1540
1541         rcu_read_lock();
1542         mpath = mesh_path_lookup(dst, sdata);
1543         if (!mpath) {
1544                 rcu_read_unlock();
1545                 return -ENOENT;
1546         }
1547         memcpy(dst, mpath->dst, ETH_ALEN);
1548         mpath_set_pinfo(mpath, next_hop, pinfo);
1549         rcu_read_unlock();
1550         return 0;
1551 }
1552
1553 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1554                                  int idx, u8 *dst, u8 *next_hop,
1555                                  struct mpath_info *pinfo)
1556 {
1557         struct ieee80211_sub_if_data *sdata;
1558         struct mesh_path *mpath;
1559
1560         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1561
1562         rcu_read_lock();
1563         mpath = mesh_path_lookup_by_idx(idx, sdata);
1564         if (!mpath) {
1565                 rcu_read_unlock();
1566                 return -ENOENT;
1567         }
1568         memcpy(dst, mpath->dst, ETH_ALEN);
1569         mpath_set_pinfo(mpath, next_hop, pinfo);
1570         rcu_read_unlock();
1571         return 0;
1572 }
1573
1574 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1575                                 struct net_device *dev,
1576                                 struct mesh_config *conf)
1577 {
1578         struct ieee80211_sub_if_data *sdata;
1579         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1580
1581         memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1582         return 0;
1583 }
1584
1585 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1586 {
1587         return (mask >> (parm-1)) & 0x1;
1588 }
1589
1590 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1591                 const struct mesh_setup *setup)
1592 {
1593         u8 *new_ie;
1594         const u8 *old_ie;
1595         struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1596                                         struct ieee80211_sub_if_data, u.mesh);
1597
1598         /* allocate information elements */
1599         new_ie = NULL;
1600         old_ie = ifmsh->ie;
1601
1602         if (setup->ie_len) {
1603                 new_ie = kmemdup(setup->ie, setup->ie_len,
1604                                 GFP_KERNEL);
1605                 if (!new_ie)
1606                         return -ENOMEM;
1607         }
1608         ifmsh->ie_len = setup->ie_len;
1609         ifmsh->ie = new_ie;
1610         kfree(old_ie);
1611
1612         /* now copy the rest of the setup parameters */
1613         ifmsh->mesh_id_len = setup->mesh_id_len;
1614         memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1615         ifmsh->mesh_sp_id = setup->sync_method;
1616         ifmsh->mesh_pp_id = setup->path_sel_proto;
1617         ifmsh->mesh_pm_id = setup->path_metric;
1618         ifmsh->security = IEEE80211_MESH_SEC_NONE;
1619         if (setup->is_authenticated)
1620                 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1621         if (setup->is_secure)
1622                 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1623
1624         /* mcast rate setting in Mesh Node */
1625         memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1626                                                 sizeof(setup->mcast_rate));
1627
1628         return 0;
1629 }
1630
1631 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1632                                         struct net_device *dev, u32 mask,
1633                                         const struct mesh_config *nconf)
1634 {
1635         struct mesh_config *conf;
1636         struct ieee80211_sub_if_data *sdata;
1637         struct ieee80211_if_mesh *ifmsh;
1638
1639         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1640         ifmsh = &sdata->u.mesh;
1641
1642         /* Set the config options which we are interested in setting */
1643         conf = &(sdata->u.mesh.mshcfg);
1644         if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1645                 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1646         if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1647                 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1648         if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1649                 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1650         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1651                 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1652         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1653                 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1654         if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1655                 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1656         if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1657                 conf->element_ttl = nconf->element_ttl;
1658         if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask))
1659                 conf->auto_open_plinks = nconf->auto_open_plinks;
1660         if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
1661                 conf->dot11MeshNbrOffsetMaxNeighbor =
1662                         nconf->dot11MeshNbrOffsetMaxNeighbor;
1663         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1664                 conf->dot11MeshHWMPmaxPREQretries =
1665                         nconf->dot11MeshHWMPmaxPREQretries;
1666         if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1667                 conf->path_refresh_time = nconf->path_refresh_time;
1668         if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1669                 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1670         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1671                 conf->dot11MeshHWMPactivePathTimeout =
1672                         nconf->dot11MeshHWMPactivePathTimeout;
1673         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1674                 conf->dot11MeshHWMPpreqMinInterval =
1675                         nconf->dot11MeshHWMPpreqMinInterval;
1676         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1677                 conf->dot11MeshHWMPperrMinInterval =
1678                         nconf->dot11MeshHWMPperrMinInterval;
1679         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1680                            mask))
1681                 conf->dot11MeshHWMPnetDiameterTraversalTime =
1682                         nconf->dot11MeshHWMPnetDiameterTraversalTime;
1683         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1684                 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1685                 ieee80211_mesh_root_setup(ifmsh);
1686         }
1687         if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1688                 /* our current gate announcement implementation rides on root
1689                  * announcements, so require this ifmsh to also be a root node
1690                  * */
1691                 if (nconf->dot11MeshGateAnnouncementProtocol &&
1692                     !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
1693                         conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
1694                         ieee80211_mesh_root_setup(ifmsh);
1695                 }
1696                 conf->dot11MeshGateAnnouncementProtocol =
1697                         nconf->dot11MeshGateAnnouncementProtocol;
1698         }
1699         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
1700                 conf->dot11MeshHWMPRannInterval =
1701                         nconf->dot11MeshHWMPRannInterval;
1702         if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
1703                 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1704         if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
1705                 /* our RSSI threshold implementation is supported only for
1706                  * devices that report signal in dBm.
1707                  */
1708                 if (!(sdata->local->hw.flags & IEEE80211_HW_SIGNAL_DBM))
1709                         return -ENOTSUPP;
1710                 conf->rssi_threshold = nconf->rssi_threshold;
1711         }
1712         if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
1713                 conf->ht_opmode = nconf->ht_opmode;
1714                 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
1715                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1716         }
1717         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
1718                 conf->dot11MeshHWMPactivePathToRootTimeout =
1719                         nconf->dot11MeshHWMPactivePathToRootTimeout;
1720         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
1721                 conf->dot11MeshHWMProotInterval =
1722                         nconf->dot11MeshHWMProotInterval;
1723         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
1724                 conf->dot11MeshHWMPconfirmationInterval =
1725                         nconf->dot11MeshHWMPconfirmationInterval;
1726         return 0;
1727 }
1728
1729 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1730                                const struct mesh_config *conf,
1731                                const struct mesh_setup *setup)
1732 {
1733         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1734         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1735         int err;
1736
1737         memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1738         err = copy_mesh_setup(ifmsh, setup);
1739         if (err)
1740                 return err;
1741
1742         /* can mesh use other SMPS modes? */
1743         sdata->smps_mode = IEEE80211_SMPS_OFF;
1744         sdata->needed_rx_chains = sdata->local->rx_chains;
1745
1746         err = ieee80211_vif_use_channel(sdata, &setup->chandef,
1747                                         IEEE80211_CHANCTX_SHARED);
1748         if (err)
1749                 return err;
1750
1751         ieee80211_start_mesh(sdata);
1752
1753         return 0;
1754 }
1755
1756 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1757 {
1758         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1759
1760         ieee80211_stop_mesh(sdata);
1761         ieee80211_vif_release_channel(sdata);
1762
1763         return 0;
1764 }
1765 #endif
1766
1767 static int ieee80211_change_bss(struct wiphy *wiphy,
1768                                 struct net_device *dev,
1769                                 struct bss_parameters *params)
1770 {
1771         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1772         enum ieee80211_band band;
1773         u32 changed = 0;
1774
1775         if (!rtnl_dereference(sdata->u.ap.beacon))
1776                 return -ENOENT;
1777
1778         band = ieee80211_get_sdata_band(sdata);
1779
1780         if (params->use_cts_prot >= 0) {
1781                 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1782                 changed |= BSS_CHANGED_ERP_CTS_PROT;
1783         }
1784         if (params->use_short_preamble >= 0) {
1785                 sdata->vif.bss_conf.use_short_preamble =
1786                         params->use_short_preamble;
1787                 changed |= BSS_CHANGED_ERP_PREAMBLE;
1788         }
1789
1790         if (!sdata->vif.bss_conf.use_short_slot &&
1791             band == IEEE80211_BAND_5GHZ) {
1792                 sdata->vif.bss_conf.use_short_slot = true;
1793                 changed |= BSS_CHANGED_ERP_SLOT;
1794         }
1795
1796         if (params->use_short_slot_time >= 0) {
1797                 sdata->vif.bss_conf.use_short_slot =
1798                         params->use_short_slot_time;
1799                 changed |= BSS_CHANGED_ERP_SLOT;
1800         }
1801
1802         if (params->basic_rates) {
1803                 int i, j;
1804                 u32 rates = 0;
1805                 struct ieee80211_supported_band *sband = wiphy->bands[band];
1806
1807                 for (i = 0; i < params->basic_rates_len; i++) {
1808                         int rate = (params->basic_rates[i] & 0x7f) * 5;
1809                         for (j = 0; j < sband->n_bitrates; j++) {
1810                                 if (sband->bitrates[j].bitrate == rate)
1811                                         rates |= BIT(j);
1812                         }
1813                 }
1814                 sdata->vif.bss_conf.basic_rates = rates;
1815                 changed |= BSS_CHANGED_BASIC_RATES;
1816         }
1817
1818         if (params->ap_isolate >= 0) {
1819                 if (params->ap_isolate)
1820                         sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1821                 else
1822                         sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1823         }
1824
1825         if (params->ht_opmode >= 0) {
1826                 sdata->vif.bss_conf.ht_operation_mode =
1827                         (u16) params->ht_opmode;
1828                 changed |= BSS_CHANGED_HT;
1829         }
1830
1831         if (params->p2p_ctwindow >= 0) {
1832                 sdata->vif.bss_conf.p2p_ctwindow = params->p2p_ctwindow;
1833                 changed |= BSS_CHANGED_P2P_PS;
1834         }
1835
1836         if (params->p2p_opp_ps >= 0) {
1837                 sdata->vif.bss_conf.p2p_oppps = params->p2p_opp_ps;
1838                 changed |= BSS_CHANGED_P2P_PS;
1839         }
1840
1841         ieee80211_bss_info_change_notify(sdata, changed);
1842
1843         return 0;
1844 }
1845
1846 static int ieee80211_set_txq_params(struct wiphy *wiphy,
1847                                     struct net_device *dev,
1848                                     struct ieee80211_txq_params *params)
1849 {
1850         struct ieee80211_local *local = wiphy_priv(wiphy);
1851         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1852         struct ieee80211_tx_queue_params p;
1853
1854         if (!local->ops->conf_tx)
1855                 return -EOPNOTSUPP;
1856
1857         if (local->hw.queues < IEEE80211_NUM_ACS)
1858                 return -EOPNOTSUPP;
1859
1860         memset(&p, 0, sizeof(p));
1861         p.aifs = params->aifs;
1862         p.cw_max = params->cwmax;
1863         p.cw_min = params->cwmin;
1864         p.txop = params->txop;
1865
1866         /*
1867          * Setting tx queue params disables u-apsd because it's only
1868          * called in master mode.
1869          */
1870         p.uapsd = false;
1871
1872         sdata->tx_conf[params->ac] = p;
1873         if (drv_conf_tx(local, sdata, params->ac, &p)) {
1874                 wiphy_debug(local->hw.wiphy,
1875                             "failed to set TX queue parameters for AC %d\n",
1876                             params->ac);
1877                 return -EINVAL;
1878         }
1879
1880         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
1881
1882         return 0;
1883 }
1884
1885 #ifdef CONFIG_PM
1886 static int ieee80211_suspend(struct wiphy *wiphy,
1887                              struct cfg80211_wowlan *wowlan)
1888 {
1889         return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
1890 }
1891
1892 static int ieee80211_resume(struct wiphy *wiphy)
1893 {
1894         return __ieee80211_resume(wiphy_priv(wiphy));
1895 }
1896 #else
1897 #define ieee80211_suspend NULL
1898 #define ieee80211_resume NULL
1899 #endif
1900
1901 static int ieee80211_scan(struct wiphy *wiphy,
1902                           struct cfg80211_scan_request *req)
1903 {
1904         struct ieee80211_sub_if_data *sdata;
1905
1906         sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
1907
1908         switch (ieee80211_vif_type_p2p(&sdata->vif)) {
1909         case NL80211_IFTYPE_STATION:
1910         case NL80211_IFTYPE_ADHOC:
1911         case NL80211_IFTYPE_MESH_POINT:
1912         case NL80211_IFTYPE_P2P_CLIENT:
1913         case NL80211_IFTYPE_P2P_DEVICE:
1914                 break;
1915         case NL80211_IFTYPE_P2P_GO:
1916                 if (sdata->local->ops->hw_scan)
1917                         break;
1918                 /*
1919                  * FIXME: implement NoA while scanning in software,
1920                  * for now fall through to allow scanning only when
1921                  * beaconing hasn't been configured yet
1922                  */
1923         case NL80211_IFTYPE_AP:
1924                 /*
1925                  * If the scan has been forced (and the driver supports
1926                  * forcing), don't care about being beaconing already.
1927                  * This will create problems to the attached stations (e.g. all
1928                  * the  frames sent while scanning on other channel will be
1929                  * lost)
1930                  */
1931                 if (sdata->u.ap.beacon &&
1932                     (!(wiphy->features & NL80211_FEATURE_AP_SCAN) ||
1933                      !(req->flags & NL80211_SCAN_FLAG_AP)))
1934                         return -EOPNOTSUPP;
1935                 break;
1936         default:
1937                 return -EOPNOTSUPP;
1938         }
1939
1940         return ieee80211_request_scan(sdata, req);
1941 }
1942
1943 static int
1944 ieee80211_sched_scan_start(struct wiphy *wiphy,
1945                            struct net_device *dev,
1946                            struct cfg80211_sched_scan_request *req)
1947 {
1948         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1949
1950         if (!sdata->local->ops->sched_scan_start)
1951                 return -EOPNOTSUPP;
1952
1953         return ieee80211_request_sched_scan_start(sdata, req);
1954 }
1955
1956 static int
1957 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
1958 {
1959         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1960
1961         if (!sdata->local->ops->sched_scan_stop)
1962                 return -EOPNOTSUPP;
1963
1964         return ieee80211_request_sched_scan_stop(sdata);
1965 }
1966
1967 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
1968                           struct cfg80211_auth_request *req)
1969 {
1970         return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
1971 }
1972
1973 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
1974                            struct cfg80211_assoc_request *req)
1975 {
1976         return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
1977 }
1978
1979 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
1980                             struct cfg80211_deauth_request *req)
1981 {
1982         return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
1983 }
1984
1985 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
1986                               struct cfg80211_disassoc_request *req)
1987 {
1988         return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
1989 }
1990
1991 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1992                                struct cfg80211_ibss_params *params)
1993 {
1994         return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
1995 }
1996
1997 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
1998 {
1999         return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2000 }
2001
2002 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev,
2003                                     int rate[IEEE80211_NUM_BANDS])
2004 {
2005         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2006
2007         memcpy(sdata->vif.bss_conf.mcast_rate, rate, sizeof(rate));
2008
2009         return 0;
2010 }
2011
2012 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
2013 {
2014         struct ieee80211_local *local = wiphy_priv(wiphy);
2015         int err;
2016
2017         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
2018                 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
2019
2020                 if (err)
2021                         return err;
2022         }
2023
2024         if (changed & WIPHY_PARAM_COVERAGE_CLASS) {
2025                 err = drv_set_coverage_class(local, wiphy->coverage_class);
2026
2027                 if (err)
2028                         return err;
2029         }
2030
2031         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
2032                 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
2033
2034                 if (err)
2035                         return err;
2036         }
2037
2038         if (changed & WIPHY_PARAM_RETRY_SHORT) {
2039                 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY)
2040                         return -EINVAL;
2041                 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
2042         }
2043         if (changed & WIPHY_PARAM_RETRY_LONG) {
2044                 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY)
2045                         return -EINVAL;
2046                 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
2047         }
2048         if (changed &
2049             (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
2050                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
2051
2052         return 0;
2053 }
2054
2055 static int ieee80211_set_tx_power(struct wiphy *wiphy,
2056                                   struct wireless_dev *wdev,
2057                                   enum nl80211_tx_power_setting type, int mbm)
2058 {
2059         struct ieee80211_local *local = wiphy_priv(wiphy);
2060         struct ieee80211_sub_if_data *sdata;
2061
2062         if (wdev) {
2063                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2064
2065                 switch (type) {
2066                 case NL80211_TX_POWER_AUTOMATIC:
2067                         sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2068                         break;
2069                 case NL80211_TX_POWER_LIMITED:
2070                 case NL80211_TX_POWER_FIXED:
2071                         if (mbm < 0 || (mbm % 100))
2072                                 return -EOPNOTSUPP;
2073                         sdata->user_power_level = MBM_TO_DBM(mbm);
2074                         break;
2075                 }
2076
2077                 ieee80211_recalc_txpower(sdata);
2078
2079                 return 0;
2080         }
2081
2082         switch (type) {
2083         case NL80211_TX_POWER_AUTOMATIC:
2084                 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2085                 break;
2086         case NL80211_TX_POWER_LIMITED:
2087         case NL80211_TX_POWER_FIXED:
2088                 if (mbm < 0 || (mbm % 100))
2089                         return -EOPNOTSUPP;
2090                 local->user_power_level = MBM_TO_DBM(mbm);
2091                 break;
2092         }
2093
2094         mutex_lock(&local->iflist_mtx);
2095         list_for_each_entry(sdata, &local->interfaces, list)
2096                 sdata->user_power_level = local->user_power_level;
2097         list_for_each_entry(sdata, &local->interfaces, list)
2098                 ieee80211_recalc_txpower(sdata);
2099         mutex_unlock(&local->iflist_mtx);
2100
2101         return 0;
2102 }
2103
2104 static int ieee80211_get_tx_power(struct wiphy *wiphy,
2105                                   struct wireless_dev *wdev,
2106                                   int *dbm)
2107 {
2108         struct ieee80211_local *local = wiphy_priv(wiphy);
2109         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2110
2111         if (!local->use_chanctx)
2112                 *dbm = local->hw.conf.power_level;
2113         else
2114                 *dbm = sdata->vif.bss_conf.txpower;
2115
2116         return 0;
2117 }
2118
2119 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
2120                                   const u8 *addr)
2121 {
2122         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2123
2124         memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
2125
2126         return 0;
2127 }
2128
2129 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
2130 {
2131         struct ieee80211_local *local = wiphy_priv(wiphy);
2132
2133         drv_rfkill_poll(local);
2134 }
2135
2136 #ifdef CONFIG_NL80211_TESTMODE
2137 static int ieee80211_testmode_cmd(struct wiphy *wiphy, void *data, int len)
2138 {
2139         struct ieee80211_local *local = wiphy_priv(wiphy);
2140
2141         if (!local->ops->testmode_cmd)
2142                 return -EOPNOTSUPP;
2143
2144         return local->ops->testmode_cmd(&local->hw, data, len);
2145 }
2146
2147 static int ieee80211_testmode_dump(struct wiphy *wiphy,
2148                                    struct sk_buff *skb,
2149                                    struct netlink_callback *cb,
2150                                    void *data, int len)
2151 {
2152         struct ieee80211_local *local = wiphy_priv(wiphy);
2153
2154         if (!local->ops->testmode_dump)
2155                 return -EOPNOTSUPP;
2156
2157         return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
2158 }
2159 #endif
2160
2161 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
2162                              enum ieee80211_smps_mode smps_mode)
2163 {
2164         const u8 *ap;
2165         enum ieee80211_smps_mode old_req;
2166         int err;
2167
2168         lockdep_assert_held(&sdata->u.mgd.mtx);
2169
2170         old_req = sdata->u.mgd.req_smps;
2171         sdata->u.mgd.req_smps = smps_mode;
2172
2173         if (old_req == smps_mode &&
2174             smps_mode != IEEE80211_SMPS_AUTOMATIC)
2175                 return 0;
2176
2177         /*
2178          * If not associated, or current association is not an HT
2179          * association, there's no need to do anything, just store
2180          * the new value until we associate.
2181          */
2182         if (!sdata->u.mgd.associated ||
2183             sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2184                 return 0;
2185
2186         ap = sdata->u.mgd.associated->bssid;
2187
2188         if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
2189                 if (sdata->u.mgd.powersave)
2190                         smps_mode = IEEE80211_SMPS_DYNAMIC;
2191                 else
2192                         smps_mode = IEEE80211_SMPS_OFF;
2193         }
2194
2195         /* send SM PS frame to AP */
2196         err = ieee80211_send_smps_action(sdata, smps_mode,
2197                                          ap, ap);
2198         if (err)
2199                 sdata->u.mgd.req_smps = old_req;
2200
2201         return err;
2202 }
2203
2204 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2205                                     bool enabled, int timeout)
2206 {
2207         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2208         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2209
2210         if (sdata->vif.type != NL80211_IFTYPE_STATION)
2211                 return -EOPNOTSUPP;
2212
2213         if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
2214                 return -EOPNOTSUPP;
2215
2216         if (enabled == sdata->u.mgd.powersave &&
2217             timeout == local->dynamic_ps_forced_timeout)
2218                 return 0;
2219
2220         sdata->u.mgd.powersave = enabled;
2221         local->dynamic_ps_forced_timeout = timeout;
2222
2223         /* no change, but if automatic follow powersave */
2224         mutex_lock(&sdata->u.mgd.mtx);
2225         __ieee80211_request_smps(sdata, sdata->u.mgd.req_smps);
2226         mutex_unlock(&sdata->u.mgd.mtx);
2227
2228         if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
2229                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2230
2231         ieee80211_recalc_ps(local, -1);
2232         ieee80211_recalc_ps_vif(sdata);
2233
2234         return 0;
2235 }
2236
2237 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
2238                                          struct net_device *dev,
2239                                          s32 rssi_thold, u32 rssi_hyst)
2240 {
2241         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2242         struct ieee80211_vif *vif = &sdata->vif;
2243         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2244
2245         if (rssi_thold == bss_conf->cqm_rssi_thold &&
2246             rssi_hyst == bss_conf->cqm_rssi_hyst)
2247                 return 0;
2248
2249         bss_conf->cqm_rssi_thold = rssi_thold;
2250         bss_conf->cqm_rssi_hyst = rssi_hyst;
2251
2252         /* tell the driver upon association, unless already associated */
2253         if (sdata->u.mgd.associated &&
2254             sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2255                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2256
2257         return 0;
2258 }
2259
2260 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
2261                                       struct net_device *dev,
2262                                       const u8 *addr,
2263                                       const struct cfg80211_bitrate_mask *mask)
2264 {
2265         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2266         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2267         int i, ret;
2268
2269         if (!ieee80211_sdata_running(sdata))
2270                 return -ENETDOWN;
2271
2272         if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) {
2273                 ret = drv_set_bitrate_mask(local, sdata, mask);
2274                 if (ret)
2275                         return ret;
2276         }
2277
2278         for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
2279                 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2280                 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].mcs,
2281                        sizeof(mask->control[i].mcs));
2282         }
2283
2284         return 0;
2285 }
2286
2287 static int ieee80211_start_roc_work(struct ieee80211_local *local,
2288                                     struct ieee80211_sub_if_data *sdata,
2289                                     struct ieee80211_channel *channel,
2290                                     unsigned int duration, u64 *cookie,
2291                                     struct sk_buff *txskb)
2292 {
2293         struct ieee80211_roc_work *roc, *tmp;
2294         bool queued = false;
2295         int ret;
2296
2297         lockdep_assert_held(&local->mtx);
2298
2299         if (local->use_chanctx && !local->ops->remain_on_channel)
2300                 return -EOPNOTSUPP;
2301
2302         roc = kzalloc(sizeof(*roc), GFP_KERNEL);
2303         if (!roc)
2304                 return -ENOMEM;
2305
2306         roc->chan = channel;
2307         roc->duration = duration;
2308         roc->req_duration = duration;
2309         roc->frame = txskb;
2310         roc->mgmt_tx_cookie = (unsigned long)txskb;
2311         roc->sdata = sdata;
2312         INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work);
2313         INIT_LIST_HEAD(&roc->dependents);
2314
2315         /* if there's one pending or we're scanning, queue this one */
2316         if (!list_empty(&local->roc_list) || local->scanning)
2317                 goto out_check_combine;
2318
2319         /* if not HW assist, just queue & schedule work */
2320         if (!local->ops->remain_on_channel) {
2321                 ieee80211_queue_delayed_work(&local->hw, &roc->work, 0);
2322                 goto out_queue;
2323         }
2324
2325         /* otherwise actually kick it off here (for error handling) */
2326
2327         /*
2328          * If the duration is zero, then the driver
2329          * wouldn't actually do anything. Set it to
2330          * 10 for now.
2331          *
2332          * TODO: cancel the off-channel operation
2333          *       when we get the SKB's TX status and
2334          *       the wait time was zero before.
2335          */
2336         if (!duration)
2337                 duration = 10;
2338
2339         ret = drv_remain_on_channel(local, sdata, channel, duration);
2340         if (ret) {
2341                 kfree(roc);
2342                 return ret;
2343         }
2344
2345         roc->started = true;
2346         goto out_queue;
2347
2348  out_check_combine:
2349         list_for_each_entry(tmp, &local->roc_list, list) {
2350                 if (tmp->chan != channel || tmp->sdata != sdata)
2351                         continue;
2352
2353                 /*
2354                  * Extend this ROC if possible:
2355                  *
2356                  * If it hasn't started yet, just increase the duration
2357                  * and add the new one to the list of dependents.
2358                  */
2359                 if (!tmp->started) {
2360                         list_add_tail(&roc->list, &tmp->dependents);
2361                         tmp->duration = max(tmp->duration, roc->duration);
2362                         queued = true;
2363                         break;
2364                 }
2365
2366                 /* If it has already started, it's more difficult ... */
2367                 if (local->ops->remain_on_channel) {
2368                         unsigned long j = jiffies;
2369
2370                         /*
2371                          * In the offloaded ROC case, if it hasn't begun, add
2372                          * this new one to the dependent list to be handled
2373                          * when the the master one begins. If it has begun,
2374                          * check that there's still a minimum time left and
2375                          * if so, start this one, transmitting the frame, but
2376                          * add it to the list directly after this one with a
2377                          * a reduced time so we'll ask the driver to execute
2378                          * it right after finishing the previous one, in the
2379                          * hope that it'll also be executed right afterwards,
2380                          * effectively extending the old one.
2381                          * If there's no minimum time left, just add it to the
2382                          * normal list.
2383                          */
2384                         if (!tmp->hw_begun) {
2385                                 list_add_tail(&roc->list, &tmp->dependents);
2386                                 queued = true;
2387                                 break;
2388                         }
2389
2390                         if (time_before(j + IEEE80211_ROC_MIN_LEFT,
2391                                         tmp->hw_start_time +
2392                                         msecs_to_jiffies(tmp->duration))) {
2393                                 int new_dur;
2394
2395                                 ieee80211_handle_roc_started(roc);
2396
2397                                 new_dur = roc->duration -
2398                                           jiffies_to_msecs(tmp->hw_start_time +
2399                                                            msecs_to_jiffies(
2400                                                                 tmp->duration) -
2401                                                            j);
2402
2403                                 if (new_dur > 0) {
2404                                         /* add right after tmp */
2405                                         list_add(&roc->list, &tmp->list);
2406                                 } else {
2407                                         list_add_tail(&roc->list,
2408                                                       &tmp->dependents);
2409                                 }
2410                                 queued = true;
2411                         }
2412                 } else if (del_timer_sync(&tmp->work.timer)) {
2413                         unsigned long new_end;
2414
2415                         /*
2416                          * In the software ROC case, cancel the timer, if
2417                          * that fails then the finish work is already
2418                          * queued/pending and thus we queue the new ROC
2419                          * normally, if that succeeds then we can extend
2420                          * the timer duration and TX the frame (if any.)
2421                          */
2422
2423                         list_add_tail(&roc->list, &tmp->dependents);
2424                         queued = true;
2425
2426                         new_end = jiffies + msecs_to_jiffies(roc->duration);
2427
2428                         /* ok, it was started & we canceled timer */
2429                         if (time_after(new_end, tmp->work.timer.expires))
2430                                 mod_timer(&tmp->work.timer, new_end);
2431                         else
2432                                 add_timer(&tmp->work.timer);
2433
2434                         ieee80211_handle_roc_started(roc);
2435                 }
2436                 break;
2437         }
2438
2439  out_queue:
2440         if (!queued)
2441                 list_add_tail(&roc->list, &local->roc_list);
2442
2443         /*
2444          * cookie is either the roc cookie (for normal roc)
2445          * or the SKB (for mgmt TX)
2446          */
2447         if (!txskb) {
2448                 /* local->mtx protects this */
2449                 local->roc_cookie_counter++;
2450                 roc->cookie = local->roc_cookie_counter;
2451                 /* wow, you wrapped 64 bits ... more likely a bug */
2452                 if (WARN_ON(roc->cookie == 0)) {
2453                         roc->cookie = 1;
2454                         local->roc_cookie_counter++;
2455                 }
2456                 *cookie = roc->cookie;
2457         } else {
2458                 *cookie = (unsigned long)txskb;
2459         }
2460
2461         return 0;
2462 }
2463
2464 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
2465                                        struct wireless_dev *wdev,
2466                                        struct ieee80211_channel *chan,
2467                                        unsigned int duration,
2468                                        u64 *cookie)
2469 {
2470         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2471         struct ieee80211_local *local = sdata->local;
2472         int ret;
2473
2474         mutex_lock(&local->mtx);
2475         ret = ieee80211_start_roc_work(local, sdata, chan,
2476                                        duration, cookie, NULL);
2477         mutex_unlock(&local->mtx);
2478
2479         return ret;
2480 }
2481
2482 static int ieee80211_cancel_roc(struct ieee80211_local *local,
2483                                 u64 cookie, bool mgmt_tx)
2484 {
2485         struct ieee80211_roc_work *roc, *tmp, *found = NULL;
2486         int ret;
2487
2488         mutex_lock(&local->mtx);
2489         list_for_each_entry_safe(roc, tmp, &local->roc_list, list) {
2490                 struct ieee80211_roc_work *dep, *tmp2;
2491
2492                 list_for_each_entry_safe(dep, tmp2, &roc->dependents, list) {
2493                         if (!mgmt_tx && dep->cookie != cookie)
2494                                 continue;
2495                         else if (mgmt_tx && dep->mgmt_tx_cookie != cookie)
2496                                 continue;
2497                         /* found dependent item -- just remove it */
2498                         list_del(&dep->list);
2499                         mutex_unlock(&local->mtx);
2500
2501                         ieee80211_roc_notify_destroy(dep);
2502                         return 0;
2503                 }
2504
2505                 if (!mgmt_tx && roc->cookie != cookie)
2506                         continue;
2507                 else if (mgmt_tx && roc->mgmt_tx_cookie != cookie)
2508                         continue;
2509
2510                 found = roc;
2511                 break;
2512         }
2513
2514         if (!found) {
2515                 mutex_unlock(&local->mtx);
2516                 return -ENOENT;
2517         }
2518
2519         /*
2520          * We found the item to cancel, so do that. Note that it
2521          * may have dependents, which we also cancel (and send
2522          * the expired signal for.) Not doing so would be quite
2523          * tricky here, but we may need to fix it later.
2524          */
2525
2526         if (local->ops->remain_on_channel) {
2527                 if (found->started) {
2528                         ret = drv_cancel_remain_on_channel(local);
2529                         if (WARN_ON_ONCE(ret)) {
2530                                 mutex_unlock(&local->mtx);
2531                                 return ret;
2532                         }
2533                 }
2534
2535                 list_del(&found->list);
2536
2537                 if (found->started)
2538                         ieee80211_start_next_roc(local);
2539                 mutex_unlock(&local->mtx);
2540
2541                 ieee80211_roc_notify_destroy(found);
2542         } else {
2543                 /* work may be pending so use it all the time */
2544                 found->abort = true;
2545                 ieee80211_queue_delayed_work(&local->hw, &found->work, 0);
2546
2547                 mutex_unlock(&local->mtx);
2548
2549                 /* work will clean up etc */
2550                 flush_delayed_work(&found->work);
2551         }
2552
2553         return 0;
2554 }
2555
2556 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
2557                                               struct wireless_dev *wdev,
2558                                               u64 cookie)
2559 {
2560         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2561         struct ieee80211_local *local = sdata->local;
2562
2563         return ieee80211_cancel_roc(local, cookie, false);
2564 }
2565
2566 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
2567                              struct ieee80211_channel *chan, bool offchan,
2568                              unsigned int wait, const u8 *buf, size_t len,
2569                              bool no_cck, bool dont_wait_for_ack, u64 *cookie)
2570 {
2571         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2572         struct ieee80211_local *local = sdata->local;
2573         struct sk_buff *skb;
2574         struct sta_info *sta;
2575         const struct ieee80211_mgmt *mgmt = (void *)buf;
2576         bool need_offchan = false;
2577         u32 flags;
2578         int ret;
2579
2580         if (dont_wait_for_ack)
2581                 flags = IEEE80211_TX_CTL_NO_ACK;
2582         else
2583                 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
2584                         IEEE80211_TX_CTL_REQ_TX_STATUS;
2585
2586         if (no_cck)
2587                 flags |= IEEE80211_TX_CTL_NO_CCK_RATE;
2588
2589         switch (sdata->vif.type) {
2590         case NL80211_IFTYPE_ADHOC:
2591                 if (!sdata->vif.bss_conf.ibss_joined)
2592                         need_offchan = true;
2593                 /* fall through */
2594 #ifdef CONFIG_MAC80211_MESH
2595         case NL80211_IFTYPE_MESH_POINT:
2596                 if (ieee80211_vif_is_mesh(&sdata->vif) &&
2597                     !sdata->u.mesh.mesh_id_len)
2598                         need_offchan = true;
2599                 /* fall through */
2600 #endif
2601         case NL80211_IFTYPE_AP:
2602         case NL80211_IFTYPE_AP_VLAN:
2603         case NL80211_IFTYPE_P2P_GO:
2604                 if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
2605                     !ieee80211_vif_is_mesh(&sdata->vif) &&
2606                     !rcu_access_pointer(sdata->bss->beacon))
2607                         need_offchan = true;
2608                 if (!ieee80211_is_action(mgmt->frame_control) ||
2609                     mgmt->u.action.category == WLAN_CATEGORY_PUBLIC)
2610                         break;
2611                 rcu_read_lock();
2612                 sta = sta_info_get(sdata, mgmt->da);
2613                 rcu_read_unlock();
2614                 if (!sta)
2615                         return -ENOLINK;
2616                 break;
2617         case NL80211_IFTYPE_STATION:
2618         case NL80211_IFTYPE_P2P_CLIENT:
2619                 if (!sdata->u.mgd.associated)
2620                         need_offchan = true;
2621                 break;
2622         case NL80211_IFTYPE_P2P_DEVICE:
2623                 need_offchan = true;
2624                 break;
2625         default:
2626                 return -EOPNOTSUPP;
2627         }
2628
2629         mutex_lock(&local->mtx);
2630
2631         /* Check if the operating channel is the requested channel */
2632         if (!need_offchan) {
2633                 struct ieee80211_chanctx_conf *chanctx_conf;
2634
2635                 rcu_read_lock();
2636                 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
2637
2638                 if (chanctx_conf)
2639                         need_offchan = chan != chanctx_conf->def.chan;
2640                 else
2641                         need_offchan = true;
2642                 rcu_read_unlock();
2643         }
2644
2645         if (need_offchan && !offchan) {
2646                 ret = -EBUSY;
2647                 goto out_unlock;
2648         }
2649
2650         skb = dev_alloc_skb(local->hw.extra_tx_headroom + len);
2651         if (!skb) {
2652                 ret = -ENOMEM;
2653                 goto out_unlock;
2654         }
2655         skb_reserve(skb, local->hw.extra_tx_headroom);
2656
2657         memcpy(skb_put(skb, len), buf, len);
2658
2659         IEEE80211_SKB_CB(skb)->flags = flags;
2660
2661         skb->dev = sdata->dev;
2662
2663         if (!need_offchan) {
2664                 *cookie = (unsigned long) skb;
2665                 ieee80211_tx_skb(sdata, skb);
2666                 ret = 0;
2667                 goto out_unlock;
2668         }
2669
2670         IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN;
2671         if (local->hw.flags & IEEE80211_HW_QUEUE_CONTROL)
2672                 IEEE80211_SKB_CB(skb)->hw_queue =
2673                         local->hw.offchannel_tx_hw_queue;
2674
2675         /* This will handle all kinds of coalescing and immediate TX */
2676         ret = ieee80211_start_roc_work(local, sdata, chan,
2677                                        wait, cookie, skb);
2678         if (ret)
2679                 kfree_skb(skb);
2680  out_unlock:
2681         mutex_unlock(&local->mtx);
2682         return ret;
2683 }
2684
2685 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
2686                                          struct wireless_dev *wdev,
2687                                          u64 cookie)
2688 {
2689         struct ieee80211_local *local = wiphy_priv(wiphy);
2690
2691         return ieee80211_cancel_roc(local, cookie, true);
2692 }
2693
2694 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
2695                                           struct wireless_dev *wdev,
2696                                           u16 frame_type, bool reg)
2697 {
2698         struct ieee80211_local *local = wiphy_priv(wiphy);
2699         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2700
2701         switch (frame_type) {
2702         case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH:
2703                 if (sdata->vif.type == NL80211_IFTYPE_ADHOC) {
2704                         struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
2705
2706                         if (reg)
2707                                 ifibss->auth_frame_registrations++;
2708                         else
2709                                 ifibss->auth_frame_registrations--;
2710                 }
2711                 break;
2712         case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ:
2713                 if (reg)
2714                         local->probe_req_reg++;
2715                 else
2716                         local->probe_req_reg--;
2717
2718                 if (!local->open_count)
2719                         break;
2720
2721                 ieee80211_queue_work(&local->hw, &local->reconfig_filter);
2722                 break;
2723         default:
2724                 break;
2725         }
2726 }
2727
2728 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
2729 {
2730         struct ieee80211_local *local = wiphy_priv(wiphy);
2731
2732         if (local->started)
2733                 return -EOPNOTSUPP;
2734
2735         return drv_set_antenna(local, tx_ant, rx_ant);
2736 }
2737
2738 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
2739 {
2740         struct ieee80211_local *local = wiphy_priv(wiphy);
2741
2742         return drv_get_antenna(local, tx_ant, rx_ant);
2743 }
2744
2745 static int ieee80211_set_ringparam(struct wiphy *wiphy, u32 tx, u32 rx)
2746 {
2747         struct ieee80211_local *local = wiphy_priv(wiphy);
2748
2749         return drv_set_ringparam(local, tx, rx);
2750 }
2751
2752 static void ieee80211_get_ringparam(struct wiphy *wiphy,
2753                                     u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max)
2754 {
2755         struct ieee80211_local *local = wiphy_priv(wiphy);
2756
2757         drv_get_ringparam(local, tx, tx_max, rx, rx_max);
2758 }
2759
2760 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
2761                                     struct net_device *dev,
2762                                     struct cfg80211_gtk_rekey_data *data)
2763 {
2764         struct ieee80211_local *local = wiphy_priv(wiphy);
2765         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2766
2767         if (!local->ops->set_rekey_data)
2768                 return -EOPNOTSUPP;
2769
2770         drv_set_rekey_data(local, sdata, data);
2771
2772         return 0;
2773 }
2774
2775 static void ieee80211_tdls_add_ext_capab(struct sk_buff *skb)
2776 {
2777         u8 *pos = (void *)skb_put(skb, 7);
2778
2779         *pos++ = WLAN_EID_EXT_CAPABILITY;
2780         *pos++ = 5; /* len */
2781         *pos++ = 0x0;
2782         *pos++ = 0x0;
2783         *pos++ = 0x0;
2784         *pos++ = 0x0;
2785         *pos++ = WLAN_EXT_CAPA5_TDLS_ENABLED;
2786 }
2787
2788 static u16 ieee80211_get_tdls_sta_capab(struct ieee80211_sub_if_data *sdata)
2789 {
2790         struct ieee80211_local *local = sdata->local;
2791         u16 capab;
2792
2793         capab = 0;
2794         if (ieee80211_get_sdata_band(sdata) != IEEE80211_BAND_2GHZ)
2795                 return capab;
2796
2797         if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE))
2798                 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
2799         if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE))
2800                 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
2801
2802         return capab;
2803 }
2804
2805 static void ieee80211_tdls_add_link_ie(struct sk_buff *skb, u8 *src_addr,
2806                                        u8 *peer, u8 *bssid)
2807 {
2808         struct ieee80211_tdls_lnkie *lnkid;
2809
2810         lnkid = (void *)skb_put(skb, sizeof(struct ieee80211_tdls_lnkie));
2811
2812         lnkid->ie_type = WLAN_EID_LINK_ID;
2813         lnkid->ie_len = sizeof(struct ieee80211_tdls_lnkie) - 2;
2814
2815         memcpy(lnkid->bssid, bssid, ETH_ALEN);
2816         memcpy(lnkid->init_sta, src_addr, ETH_ALEN);
2817         memcpy(lnkid->resp_sta, peer, ETH_ALEN);
2818 }
2819
2820 static int
2821 ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev,
2822                                u8 *peer, u8 action_code, u8 dialog_token,
2823                                u16 status_code, struct sk_buff *skb)
2824 {
2825         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2826         enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
2827         struct ieee80211_tdls_data *tf;
2828
2829         tf = (void *)skb_put(skb, offsetof(struct ieee80211_tdls_data, u));
2830
2831         memcpy(tf->da, peer, ETH_ALEN);
2832         memcpy(tf->sa, sdata->vif.addr, ETH_ALEN);
2833         tf->ether_type = cpu_to_be16(ETH_P_TDLS);
2834         tf->payload_type = WLAN_TDLS_SNAP_RFTYPE;
2835
2836         switch (action_code) {
2837         case WLAN_TDLS_SETUP_REQUEST:
2838                 tf->category = WLAN_CATEGORY_TDLS;
2839                 tf->action_code = WLAN_TDLS_SETUP_REQUEST;
2840
2841                 skb_put(skb, sizeof(tf->u.setup_req));
2842                 tf->u.setup_req.dialog_token = dialog_token;
2843                 tf->u.setup_req.capability =
2844                         cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2845
2846                 ieee80211_add_srates_ie(sdata, skb, false, band);
2847                 ieee80211_add_ext_srates_ie(sdata, skb, false, band);
2848                 ieee80211_tdls_add_ext_capab(skb);
2849                 break;
2850         case WLAN_TDLS_SETUP_RESPONSE:
2851                 tf->category = WLAN_CATEGORY_TDLS;
2852                 tf->action_code = WLAN_TDLS_SETUP_RESPONSE;
2853
2854                 skb_put(skb, sizeof(tf->u.setup_resp));
2855                 tf->u.setup_resp.status_code = cpu_to_le16(status_code);
2856                 tf->u.setup_resp.dialog_token = dialog_token;
2857                 tf->u.setup_resp.capability =
2858                         cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2859
2860                 ieee80211_add_srates_ie(sdata, skb, false, band);
2861                 ieee80211_add_ext_srates_ie(sdata, skb, false, band);
2862                 ieee80211_tdls_add_ext_capab(skb);
2863                 break;
2864         case WLAN_TDLS_SETUP_CONFIRM:
2865                 tf->category = WLAN_CATEGORY_TDLS;
2866                 tf->action_code = WLAN_TDLS_SETUP_CONFIRM;
2867
2868                 skb_put(skb, sizeof(tf->u.setup_cfm));
2869                 tf->u.setup_cfm.status_code = cpu_to_le16(status_code);
2870                 tf->u.setup_cfm.dialog_token = dialog_token;
2871                 break;
2872         case WLAN_TDLS_TEARDOWN:
2873                 tf->category = WLAN_CATEGORY_TDLS;
2874                 tf->action_code = WLAN_TDLS_TEARDOWN;
2875
2876                 skb_put(skb, sizeof(tf->u.teardown));
2877                 tf->u.teardown.reason_code = cpu_to_le16(status_code);
2878                 break;
2879         case WLAN_TDLS_DISCOVERY_REQUEST:
2880                 tf->category = WLAN_CATEGORY_TDLS;
2881                 tf->action_code = WLAN_TDLS_DISCOVERY_REQUEST;
2882
2883                 skb_put(skb, sizeof(tf->u.discover_req));
2884                 tf->u.discover_req.dialog_token = dialog_token;
2885                 break;
2886         default:
2887                 return -EINVAL;
2888         }
2889
2890         return 0;
2891 }
2892
2893 static int
2894 ieee80211_prep_tdls_direct(struct wiphy *wiphy, struct net_device *dev,
2895                            u8 *peer, u8 action_code, u8 dialog_token,
2896                            u16 status_code, struct sk_buff *skb)
2897 {
2898         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2899         enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
2900         struct ieee80211_mgmt *mgmt;
2901
2902         mgmt = (void *)skb_put(skb, 24);
2903         memset(mgmt, 0, 24);
2904         memcpy(mgmt->da, peer, ETH_ALEN);
2905         memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
2906         memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN);
2907
2908         mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
2909                                           IEEE80211_STYPE_ACTION);
2910
2911         switch (action_code) {
2912         case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2913                 skb_put(skb, 1 + sizeof(mgmt->u.action.u.tdls_discover_resp));
2914                 mgmt->u.action.category = WLAN_CATEGORY_PUBLIC;
2915                 mgmt->u.action.u.tdls_discover_resp.action_code =
2916                         WLAN_PUB_ACTION_TDLS_DISCOVER_RES;
2917                 mgmt->u.action.u.tdls_discover_resp.dialog_token =
2918                         dialog_token;
2919                 mgmt->u.action.u.tdls_discover_resp.capability =
2920                         cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2921
2922                 ieee80211_add_srates_ie(sdata, skb, false, band);
2923                 ieee80211_add_ext_srates_ie(sdata, skb, false, band);
2924                 ieee80211_tdls_add_ext_capab(skb);
2925                 break;
2926         default:
2927                 return -EINVAL;
2928         }
2929
2930         return 0;
2931 }
2932
2933 static int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
2934                                u8 *peer, u8 action_code, u8 dialog_token,
2935                                u16 status_code, const u8 *extra_ies,
2936                                size_t extra_ies_len)
2937 {
2938         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2939         struct ieee80211_local *local = sdata->local;
2940         struct sk_buff *skb = NULL;
2941         bool send_direct;
2942         int ret;
2943
2944         if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
2945                 return -ENOTSUPP;
2946
2947         /* make sure we are in managed mode, and associated */
2948         if (sdata->vif.type != NL80211_IFTYPE_STATION ||
2949             !sdata->u.mgd.associated)
2950                 return -EINVAL;
2951
2952         tdls_dbg(sdata, "TDLS mgmt action %d peer %pM\n",
2953                  action_code, peer);
2954
2955         skb = dev_alloc_skb(local->hw.extra_tx_headroom +
2956                             max(sizeof(struct ieee80211_mgmt),
2957                                 sizeof(struct ieee80211_tdls_data)) +
2958                             50 + /* supported rates */
2959                             7 + /* ext capab */
2960                             extra_ies_len +
2961                             sizeof(struct ieee80211_tdls_lnkie));
2962         if (!skb)
2963                 return -ENOMEM;
2964
2965         skb_reserve(skb, local->hw.extra_tx_headroom);
2966
2967         switch (action_code) {
2968         case WLAN_TDLS_SETUP_REQUEST:
2969         case WLAN_TDLS_SETUP_RESPONSE:
2970         case WLAN_TDLS_SETUP_CONFIRM:
2971         case WLAN_TDLS_TEARDOWN:
2972         case WLAN_TDLS_DISCOVERY_REQUEST:
2973                 ret = ieee80211_prep_tdls_encap_data(wiphy, dev, peer,
2974                                                      action_code, dialog_token,
2975                                                      status_code, skb);
2976                 send_direct = false;
2977                 break;
2978         case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2979                 ret = ieee80211_prep_tdls_direct(wiphy, dev, peer, action_code,
2980                                                  dialog_token, status_code,
2981                                                  skb);
2982                 send_direct = true;
2983                 break;
2984         default:
2985                 ret = -ENOTSUPP;
2986                 break;
2987         }
2988
2989         if (ret < 0)
2990                 goto fail;
2991
2992         if (extra_ies_len)
2993                 memcpy(skb_put(skb, extra_ies_len), extra_ies, extra_ies_len);
2994
2995         /* the TDLS link IE is always added last */
2996         switch (action_code) {
2997         case WLAN_TDLS_SETUP_REQUEST:
2998         case WLAN_TDLS_SETUP_CONFIRM:
2999         case WLAN_TDLS_TEARDOWN:
3000         case WLAN_TDLS_DISCOVERY_REQUEST:
3001                 /* we are the initiator */
3002                 ieee80211_tdls_add_link_ie(skb, sdata->vif.addr, peer,
3003                                            sdata->u.mgd.bssid);
3004                 break;
3005         case WLAN_TDLS_SETUP_RESPONSE:
3006         case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
3007                 /* we are the responder */
3008                 ieee80211_tdls_add_link_ie(skb, peer, sdata->vif.addr,
3009                                            sdata->u.mgd.bssid);
3010                 break;
3011         default:
3012                 ret = -ENOTSUPP;
3013                 goto fail;
3014         }
3015
3016         if (send_direct) {
3017                 ieee80211_tx_skb(sdata, skb);
3018                 return 0;
3019         }
3020
3021         /*
3022          * According to 802.11z: Setup req/resp are sent in AC_BK, otherwise
3023          * we should default to AC_VI.
3024          */
3025         switch (action_code) {
3026         case WLAN_TDLS_SETUP_REQUEST:
3027         case WLAN_TDLS_SETUP_RESPONSE:
3028                 skb_set_queue_mapping(skb, IEEE80211_AC_BK);
3029                 skb->priority = 2;
3030                 break;
3031         default:
3032                 skb_set_queue_mapping(skb, IEEE80211_AC_VI);
3033                 skb->priority = 5;
3034                 break;
3035         }
3036
3037         /* disable bottom halves when entering the Tx path */
3038         local_bh_disable();
3039         ret = ieee80211_subif_start_xmit(skb, dev);
3040         local_bh_enable();
3041
3042         return ret;
3043
3044 fail:
3045         dev_kfree_skb(skb);
3046         return ret;
3047 }
3048
3049 static int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
3050                                u8 *peer, enum nl80211_tdls_operation oper)
3051 {
3052         struct sta_info *sta;
3053         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3054
3055         if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
3056                 return -ENOTSUPP;
3057
3058         if (sdata->vif.type != NL80211_IFTYPE_STATION)
3059                 return -EINVAL;
3060
3061         tdls_dbg(sdata, "TDLS oper %d peer %pM\n", oper, peer);
3062
3063         switch (oper) {
3064         case NL80211_TDLS_ENABLE_LINK:
3065                 rcu_read_lock();
3066                 sta = sta_info_get(sdata, peer);
3067                 if (!sta) {
3068                         rcu_read_unlock();
3069                         return -ENOLINK;
3070                 }
3071
3072                 set_sta_flag(sta, WLAN_STA_TDLS_PEER_AUTH);
3073                 rcu_read_unlock();
3074                 break;
3075         case NL80211_TDLS_DISABLE_LINK:
3076                 return sta_info_destroy_addr(sdata, peer);
3077         case NL80211_TDLS_TEARDOWN:
3078         case NL80211_TDLS_SETUP:
3079         case NL80211_TDLS_DISCOVERY_REQ:
3080                 /* We don't support in-driver setup/teardown/discovery */
3081                 return -ENOTSUPP;
3082         default:
3083                 return -ENOTSUPP;
3084         }
3085
3086         return 0;
3087 }
3088
3089 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
3090                                   const u8 *peer, u64 *cookie)
3091 {
3092         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3093         struct ieee80211_local *local = sdata->local;
3094         struct ieee80211_qos_hdr *nullfunc;
3095         struct sk_buff *skb;
3096         int size = sizeof(*nullfunc);
3097         __le16 fc;
3098         bool qos;
3099         struct ieee80211_tx_info *info;
3100         struct sta_info *sta;
3101         struct ieee80211_chanctx_conf *chanctx_conf;
3102         enum ieee80211_band band;
3103
3104         rcu_read_lock();
3105         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3106         if (WARN_ON(!chanctx_conf)) {
3107                 rcu_read_unlock();
3108                 return -EINVAL;
3109         }
3110         band = chanctx_conf->def.chan->band;
3111         sta = sta_info_get(sdata, peer);
3112         if (sta) {
3113                 qos = test_sta_flag(sta, WLAN_STA_WME);
3114         } else {
3115                 rcu_read_unlock();
3116                 return -ENOLINK;
3117         }
3118
3119         if (qos) {
3120                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3121                                  IEEE80211_STYPE_QOS_NULLFUNC |
3122                                  IEEE80211_FCTL_FROMDS);
3123         } else {
3124                 size -= 2;
3125                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3126                                  IEEE80211_STYPE_NULLFUNC |
3127                                  IEEE80211_FCTL_FROMDS);
3128         }
3129
3130         skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
3131         if (!skb) {
3132                 rcu_read_unlock();
3133                 return -ENOMEM;
3134         }
3135
3136         skb->dev = dev;
3137
3138         skb_reserve(skb, local->hw.extra_tx_headroom);
3139
3140         nullfunc = (void *) skb_put(skb, size);
3141         nullfunc->frame_control = fc;
3142         nullfunc->duration_id = 0;
3143         memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
3144         memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
3145         memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
3146         nullfunc->seq_ctrl = 0;
3147
3148         info = IEEE80211_SKB_CB(skb);
3149
3150         info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
3151                        IEEE80211_TX_INTFL_NL80211_FRAME_TX;
3152
3153         skb_set_queue_mapping(skb, IEEE80211_AC_VO);
3154         skb->priority = 7;
3155         if (qos)
3156                 nullfunc->qos_ctrl = cpu_to_le16(7);
3157
3158         local_bh_disable();
3159         ieee80211_xmit(sdata, skb, band);
3160         local_bh_enable();
3161         rcu_read_unlock();
3162
3163         *cookie = (unsigned long) skb;
3164         return 0;
3165 }
3166
3167 static int ieee80211_cfg_get_channel(struct wiphy *wiphy,
3168                                      struct wireless_dev *wdev,
3169                                      struct cfg80211_chan_def *chandef)
3170 {
3171         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3172         struct ieee80211_chanctx_conf *chanctx_conf;
3173         int ret = -ENODATA;
3174
3175         rcu_read_lock();
3176         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3177         if (chanctx_conf) {
3178                 *chandef = chanctx_conf->def;
3179                 ret = 0;
3180         }
3181         rcu_read_unlock();
3182
3183         return ret;
3184 }
3185
3186 #ifdef CONFIG_PM
3187 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
3188 {
3189         drv_set_wakeup(wiphy_priv(wiphy), enabled);
3190 }
3191 #endif
3192
3193 struct cfg80211_ops mac80211_config_ops = {
3194         .add_virtual_intf = ieee80211_add_iface,
3195         .del_virtual_intf = ieee80211_del_iface,
3196         .change_virtual_intf = ieee80211_change_iface,
3197         .start_p2p_device = ieee80211_start_p2p_device,
3198         .stop_p2p_device = ieee80211_stop_p2p_device,
3199         .add_key = ieee80211_add_key,
3200         .del_key = ieee80211_del_key,
3201         .get_key = ieee80211_get_key,
3202         .set_default_key = ieee80211_config_default_key,
3203         .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
3204         .start_ap = ieee80211_start_ap,
3205         .change_beacon = ieee80211_change_beacon,
3206         .stop_ap = ieee80211_stop_ap,
3207         .add_station = ieee80211_add_station,
3208         .del_station = ieee80211_del_station,
3209         .change_station = ieee80211_change_station,
3210         .get_station = ieee80211_get_station,
3211         .dump_station = ieee80211_dump_station,
3212         .dump_survey = ieee80211_dump_survey,
3213 #ifdef CONFIG_MAC80211_MESH
3214         .add_mpath = ieee80211_add_mpath,
3215         .del_mpath = ieee80211_del_mpath,
3216         .change_mpath = ieee80211_change_mpath,
3217         .get_mpath = ieee80211_get_mpath,
3218         .dump_mpath = ieee80211_dump_mpath,
3219         .update_mesh_config = ieee80211_update_mesh_config,
3220         .get_mesh_config = ieee80211_get_mesh_config,
3221         .join_mesh = ieee80211_join_mesh,
3222         .leave_mesh = ieee80211_leave_mesh,
3223 #endif
3224         .change_bss = ieee80211_change_bss,
3225         .set_txq_params = ieee80211_set_txq_params,
3226         .set_monitor_channel = ieee80211_set_monitor_channel,
3227         .suspend = ieee80211_suspend,
3228         .resume = ieee80211_resume,
3229         .scan = ieee80211_scan,
3230         .sched_scan_start = ieee80211_sched_scan_start,
3231         .sched_scan_stop = ieee80211_sched_scan_stop,
3232         .auth = ieee80211_auth,
3233         .assoc = ieee80211_assoc,
3234         .deauth = ieee80211_deauth,
3235         .disassoc = ieee80211_disassoc,
3236         .join_ibss = ieee80211_join_ibss,
3237         .leave_ibss = ieee80211_leave_ibss,
3238         .set_mcast_rate = ieee80211_set_mcast_rate,
3239         .set_wiphy_params = ieee80211_set_wiphy_params,
3240         .set_tx_power = ieee80211_set_tx_power,
3241         .get_tx_power = ieee80211_get_tx_power,
3242         .set_wds_peer = ieee80211_set_wds_peer,
3243         .rfkill_poll = ieee80211_rfkill_poll,
3244         CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
3245         CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
3246         .set_power_mgmt = ieee80211_set_power_mgmt,
3247         .set_bitrate_mask = ieee80211_set_bitrate_mask,
3248         .remain_on_channel = ieee80211_remain_on_channel,
3249         .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
3250         .mgmt_tx = ieee80211_mgmt_tx,
3251         .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
3252         .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
3253         .mgmt_frame_register = ieee80211_mgmt_frame_register,
3254         .set_antenna = ieee80211_set_antenna,
3255         .get_antenna = ieee80211_get_antenna,
3256         .set_ringparam = ieee80211_set_ringparam,
3257         .get_ringparam = ieee80211_get_ringparam,
3258         .set_rekey_data = ieee80211_set_rekey_data,
3259         .tdls_oper = ieee80211_tdls_oper,
3260         .tdls_mgmt = ieee80211_tdls_mgmt,
3261         .probe_client = ieee80211_probe_client,
3262         .set_noack_map = ieee80211_set_noack_map,
3263 #ifdef CONFIG_PM
3264         .set_wakeup = ieee80211_set_wakeup,
3265 #endif
3266         .get_et_sset_count = ieee80211_get_et_sset_count,
3267         .get_et_stats = ieee80211_get_et_stats,
3268         .get_et_strings = ieee80211_get_et_strings,
3269         .get_channel = ieee80211_cfg_get_channel,
3270 };