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 net_device *ieee80211_add_iface(struct wiphy *wiphy, char *name,
  24                                               enum nl80211_iftype type,
  25                                               u32 *flags,
  26                                               struct vif_params *params)
  27 {
  28         struct ieee80211_local *local = wiphy_priv(wiphy);
  29         struct net_device *dev;
  30         struct ieee80211_sub_if_data *sdata;
  31         int err;
  32
  33         err = ieee80211_if_add(local, name, &dev, type, params);
  34         if (err)
  35                 return ERR_PTR(err);
  36
  37         if (type == NL80211_IFTYPE_MONITOR && flags) {
  38                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  39                 sdata->u.mntr_flags = *flags;
  40         }
  41
  42         return dev;
  43 }
  44
  45 static int ieee80211_del_iface(struct wiphy *wiphy, struct net_device *dev)
  46 {
  47         ieee80211_if_remove(IEEE80211_DEV_TO_SUB_IF(dev));
  48
  49         return 0;
  50 }
  51
  52 static int ieee80211_change_iface(struct wiphy *wiphy,
  53                                   struct net_device *dev,
  54                                   enum nl80211_iftype type, u32 *flags,
  55                                   struct vif_params *params)
  56 {
  57         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  58         int ret;
  59
  60         ret = ieee80211_if_change_type(sdata, type);
  61         if (ret)
  62                 return ret;
  63
  64         if (type == NL80211_IFTYPE_AP_VLAN &&
  65             params && params->use_4addr == 0)
  66                 RCU_INIT_POINTER(sdata->u.vlan.sta, NULL);
  67         else if (type == NL80211_IFTYPE_STATION &&
  68                  params && params->use_4addr >= 0)
  69                 sdata->u.mgd.use_4addr = params->use_4addr;
  70
  71         if (sdata->vif.type == NL80211_IFTYPE_MONITOR && flags) {
  72                 struct ieee80211_local *local = sdata->local;
  73
  74                 if (ieee80211_sdata_running(sdata)) {
  75                         /*
  76                          * Prohibit MONITOR_FLAG_COOK_FRAMES to be
  77                          * changed while the interface is up.
  78                          * Else we would need to add a lot of cruft
  79                          * to update everything:
  80                          *      cooked_mntrs, monitor and all fif_* counters
  81                          *      reconfigure hardware
  82                          */
  83                         if ((*flags & MONITOR_FLAG_COOK_FRAMES) !=
  84                             (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES))
  85                                 return -EBUSY;
  86
  87                         ieee80211_adjust_monitor_flags(sdata, -1);
  88                         sdata->u.mntr_flags = *flags;
  89                         ieee80211_adjust_monitor_flags(sdata, 1);
  90
  91                         ieee80211_configure_filter(local);
  92                 } else {
  93                         /*
  94                          * Because the interface is down, ieee80211_do_stop
  95                          * and ieee80211_do_open take care of "everything"
  96                          * mentioned in the comment above.
  97                          */
  98                         sdata->u.mntr_flags = *flags;
  99                 }
 100         }
 101
 102         return 0;
 103 }
 104
 105 static int ieee80211_set_noack_map(struct wiphy *wiphy,
 106                                   struct net_device *dev,
 107                                   u16 noack_map)
 108 {
 109         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 110
 111         sdata->noack_map = noack_map;
 112         return 0;
 113 }
 114
 115 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
 116                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 117                              struct key_params *params)
 118 {
 119         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 120         struct sta_info *sta = NULL;
 121         struct ieee80211_key *key;
 122         int err;
 123
 124         if (!ieee80211_sdata_running(sdata))
 125                 return -ENETDOWN;
 126
 127         /* reject WEP and TKIP keys if WEP failed to initialize */
 128         switch (params->cipher) {
 129         case WLAN_CIPHER_SUITE_WEP40:
 130         case WLAN_CIPHER_SUITE_TKIP:
 131         case WLAN_CIPHER_SUITE_WEP104:
 132                 if (IS_ERR(sdata->local->wep_tx_tfm))
 133                         return -EINVAL;
 134                 break;
 135         default:
 136                 break;
 137         }
 138
 139         key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
 140                                   params->key, params->seq_len, params->seq);
 141         if (IS_ERR(key))
 142                 return PTR_ERR(key);
 143
 144         if (pairwise)
 145                 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
 146
 147         mutex_lock(&sdata->local->sta_mtx);
 148
 149         if (mac_addr) {
 150                 if (ieee80211_vif_is_mesh(&sdata->vif))
 151                         sta = sta_info_get(sdata, mac_addr);
 152                 else
 153                         sta = sta_info_get_bss(sdata, mac_addr);
 154                 if (!sta) {
 155                         ieee80211_key_free(sdata->local, key);
 156                         err = -ENOENT;
 157                         goto out_unlock;
 158                 }
 159         }
 160
 161         err = ieee80211_key_link(key, sdata, sta);
 162         if (err)
 163                 ieee80211_key_free(sdata->local, key);
 164
 165  out_unlock:
 166         mutex_unlock(&sdata->local->sta_mtx);
 167
 168         return err;
 169 }
 170
 171 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
 172                              u8 key_idx, bool pairwise, const u8 *mac_addr)
 173 {
 174         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 175         struct ieee80211_local *local = sdata->local;
 176         struct sta_info *sta;
 177         struct ieee80211_key *key = NULL;
 178         int ret;
 179
 180         mutex_lock(&local->sta_mtx);
 181         mutex_lock(&local->key_mtx);
 182
 183         if (mac_addr) {
 184                 ret = -ENOENT;
 185
 186                 sta = sta_info_get_bss(sdata, mac_addr);
 187                 if (!sta)
 188                         goto out_unlock;
 189
 190                 if (pairwise)
 191                         key = key_mtx_dereference(local, sta->ptk);
 192                 else
 193                         key = key_mtx_dereference(local, sta->gtk[key_idx]);
 194         } else
 195                 key = key_mtx_dereference(local, sdata->keys[key_idx]);
 196
 197         if (!key) {
 198                 ret = -ENOENT;
 199                 goto out_unlock;
 200         }
 201
 202         __ieee80211_key_free(key);
 203
 204         ret = 0;
 205  out_unlock:
 206         mutex_unlock(&local->key_mtx);
 207         mutex_unlock(&local->sta_mtx);
 208
 209         return ret;
 210 }
 211
 212 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
 213                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 214                              void *cookie,
 215                              void (*callback)(void *cookie,
 216                                               struct key_params *params))
 217 {
 218         struct ieee80211_sub_if_data *sdata;
 219         struct sta_info *sta = NULL;
 220         u8 seq[6] = {0};
 221         struct key_params params;
 222         struct ieee80211_key *key = NULL;
 223         u64 pn64;
 224         u32 iv32;
 225         u16 iv16;
 226         int err = -ENOENT;
 227
 228         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 229
 230         rcu_read_lock();
 231
 232         if (mac_addr) {
 233                 sta = sta_info_get_bss(sdata, mac_addr);
 234                 if (!sta)
 235                         goto out;
 236
 237                 if (pairwise)
 238                         key = rcu_dereference(sta->ptk);
 239                 else if (key_idx < NUM_DEFAULT_KEYS)
 240                         key = rcu_dereference(sta->gtk[key_idx]);
 241         } else
 242                 key = rcu_dereference(sdata->keys[key_idx]);
 243
 244         if (!key)
 245                 goto out;
 246
 247         memset(&params, 0, sizeof(params));
 248
 249         params.cipher = key->conf.cipher;
 250
 251         switch (key->conf.cipher) {
 252         case WLAN_CIPHER_SUITE_TKIP:
 253                 iv32 = key->u.tkip.tx.iv32;
 254                 iv16 = key->u.tkip.tx.iv16;
 255
 256                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)
 257                         drv_get_tkip_seq(sdata->local,
 258                                          key->conf.hw_key_idx,
 259                                          &iv32, &iv16);
 260
 261                 seq[0] = iv16 & 0xff;
 262                 seq[1] = (iv16 >> 8) & 0xff;
 263                 seq[2] = iv32 & 0xff;
 264                 seq[3] = (iv32 >> 8) & 0xff;
 265                 seq[4] = (iv32 >> 16) & 0xff;
 266                 seq[5] = (iv32 >> 24) & 0xff;
 267                 params.seq = seq;
 268                 params.seq_len = 6;
 269                 break;
 270         case WLAN_CIPHER_SUITE_CCMP:
 271                 pn64 = atomic64_read(&key->u.ccmp.tx_pn);
 272                 seq[0] = pn64;
 273                 seq[1] = pn64 >> 8;
 274                 seq[2] = pn64 >> 16;
 275                 seq[3] = pn64 >> 24;
 276                 seq[4] = pn64 >> 32;
 277                 seq[5] = pn64 >> 40;
 278                 params.seq = seq;
 279                 params.seq_len = 6;
 280                 break;
 281         case WLAN_CIPHER_SUITE_AES_CMAC:
 282                 pn64 = atomic64_read(&key->u.aes_cmac.tx_pn);
 283                 seq[0] = pn64;
 284                 seq[1] = pn64 >> 8;
 285                 seq[2] = pn64 >> 16;
 286                 seq[3] = pn64 >> 24;
 287                 seq[4] = pn64 >> 32;
 288                 seq[5] = pn64 >> 40;
 289                 params.seq = seq;
 290                 params.seq_len = 6;
 291                 break;
 292         }
 293
 294         params.key = key->conf.key;
 295         params.key_len = key->conf.keylen;
 296
 297         callback(cookie, &params);
 298         err = 0;
 299
 300  out:
 301         rcu_read_unlock();
 302         return err;
 303 }
 304
 305 static int ieee80211_config_default_key(struct wiphy *wiphy,
 306                                         struct net_device *dev,
 307                                         u8 key_idx, bool uni,
 308                                         bool multi)
 309 {
 310         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 311
 312         ieee80211_set_default_key(sdata, key_idx, uni, multi);
 313
 314         return 0;
 315 }
 316
 317 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
 318                                              struct net_device *dev,
 319                                              u8 key_idx)
 320 {
 321         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 322
 323         ieee80211_set_default_mgmt_key(sdata, key_idx);
 324
 325         return 0;
 326 }
 327
 328 static void rate_idx_to_bitrate(struct rate_info *rate, struct sta_info *sta, int idx)
 329 {
 330         if (!(rate->flags & RATE_INFO_FLAGS_MCS)) {
 331                 struct ieee80211_supported_band *sband;
 332                 sband = sta->local->hw.wiphy->bands[
 333                                 sta->local->hw.conf.channel->band];
 334                 rate->legacy = sband->bitrates[idx].bitrate;
 335         } else
 336                 rate->mcs = idx;
 337 }
 338
 339 static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
 340 {
 341         struct ieee80211_sub_if_data *sdata = sta->sdata;
 342         struct timespec uptime;
 343
 344         sinfo->generation = sdata->local->sta_generation;
 345
 346         sinfo->filled = STATION_INFO_INACTIVE_TIME |
 347                         STATION_INFO_RX_BYTES |
 348                         STATION_INFO_TX_BYTES |
 349                         STATION_INFO_RX_PACKETS |
 350                         STATION_INFO_TX_PACKETS |
 351                         STATION_INFO_TX_RETRIES |
 352                         STATION_INFO_TX_FAILED |
 353                         STATION_INFO_TX_BITRATE |
 354                         STATION_INFO_RX_BITRATE |
 355                         STATION_INFO_RX_DROP_MISC |
 356                         STATION_INFO_BSS_PARAM |
 357                         STATION_INFO_CONNECTED_TIME |
 358                         STATION_INFO_STA_FLAGS |
 359                         STATION_INFO_BEACON_LOSS_COUNT;
 360
 361         do_posix_clock_monotonic_gettime(&uptime);
 362         sinfo->connected_time = uptime.tv_sec - sta->last_connected;
 363
 364         sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx);
 365         sinfo->rx_bytes = sta->rx_bytes;
 366         sinfo->tx_bytes = sta->tx_bytes;
 367         sinfo->rx_packets = sta->rx_packets;
 368         sinfo->tx_packets = sta->tx_packets;
 369         sinfo->tx_retries = sta->tx_retry_count;
 370         sinfo->tx_failed = sta->tx_retry_failed;
 371         sinfo->rx_dropped_misc = sta->rx_dropped;
 372         sinfo->beacon_loss_count = sta->beacon_loss_count;
 373
 374         if ((sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) ||
 375             (sta->local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)) {
 376                 sinfo->filled |= STATION_INFO_SIGNAL | STATION_INFO_SIGNAL_AVG;
 377                 sinfo->signal = (s8)sta->last_signal;
 378                 sinfo->signal_avg = (s8) -ewma_read(&sta->avg_signal);
 379         }
 380
 381         sinfo->txrate.flags = 0;
 382         if (sta->last_tx_rate.flags & IEEE80211_TX_RC_MCS)
 383                 sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS;
 384         if (sta->last_tx_rate.flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 385                 sinfo->txrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 386         if (sta->last_tx_rate.flags & IEEE80211_TX_RC_SHORT_GI)
 387                 sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
 388         rate_idx_to_bitrate(&sinfo->txrate, sta, sta->last_tx_rate.idx);
 389
 390         sinfo->rxrate.flags = 0;
 391         if (sta->last_rx_rate_flag & RX_FLAG_HT)
 392                 sinfo->rxrate.flags |= RATE_INFO_FLAGS_MCS;
 393         if (sta->last_rx_rate_flag & RX_FLAG_40MHZ)
 394                 sinfo->rxrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 395         if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI)
 396                 sinfo->rxrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
 397         rate_idx_to_bitrate(&sinfo->rxrate, sta, sta->last_rx_rate_idx);
 398
 399         if (ieee80211_vif_is_mesh(&sdata->vif)) {
 400 #ifdef CONFIG_MAC80211_MESH
 401                 sinfo->filled |= STATION_INFO_LLID |
 402                                  STATION_INFO_PLID |
 403                                  STATION_INFO_PLINK_STATE;
 404
 405                 sinfo->llid = le16_to_cpu(sta->llid);
 406                 sinfo->plid = le16_to_cpu(sta->plid);
 407                 sinfo->plink_state = sta->plink_state;
 408 #endif
 409         }
 410
 411         sinfo->bss_param.flags = 0;
 412         if (sdata->vif.bss_conf.use_cts_prot)
 413                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_CTS_PROT;
 414         if (sdata->vif.bss_conf.use_short_preamble)
 415                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_PREAMBLE;
 416         if (sdata->vif.bss_conf.use_short_slot)
 417                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME;
 418         sinfo->bss_param.dtim_period = sdata->local->hw.conf.ps_dtim_period;
 419         sinfo->bss_param.beacon_interval = sdata->vif.bss_conf.beacon_int;
 420
 421         sinfo->sta_flags.set = 0;
 422         sinfo->sta_flags.mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
 423                                 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
 424                                 BIT(NL80211_STA_FLAG_WME) |
 425                                 BIT(NL80211_STA_FLAG_MFP) |
 426                                 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
 427                                 BIT(NL80211_STA_FLAG_TDLS_PEER);
 428         if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
 429                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHORIZED);
 430         if (test_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE))
 431                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
 432         if (test_sta_flag(sta, WLAN_STA_WME))
 433                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_WME);
 434         if (test_sta_flag(sta, WLAN_STA_MFP))
 435                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_MFP);
 436         if (test_sta_flag(sta, WLAN_STA_AUTH))
 437                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHENTICATED);
 438         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER))
 439                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_TDLS_PEER);
 440 }
 441
 442
 443 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
 444                                  int idx, u8 *mac, struct station_info *sinfo)
 445 {
 446         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 447         struct sta_info *sta;
 448         int ret = -ENOENT;
 449
 450         rcu_read_lock();
 451
 452         sta = sta_info_get_by_idx(sdata, idx);
 453         if (sta) {
 454                 ret = 0;
 455                 memcpy(mac, sta->sta.addr, ETH_ALEN);
 456                 sta_set_sinfo(sta, sinfo);
 457         }
 458
 459         rcu_read_unlock();
 460
 461         return ret;
 462 }
 463
 464 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
 465                                  int idx, struct survey_info *survey)
 466 {
 467         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 468
 469         return drv_get_survey(local, idx, survey);
 470 }
 471
 472 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 473                                  u8 *mac, struct station_info *sinfo)
 474 {
 475         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 476         struct sta_info *sta;
 477         int ret = -ENOENT;
 478
 479         rcu_read_lock();
 480
 481         sta = sta_info_get_bss(sdata, mac);
 482         if (sta) {
 483                 ret = 0;
 484                 sta_set_sinfo(sta, sinfo);
 485         }
 486
 487         rcu_read_unlock();
 488
 489         return ret;
 490 }
 491
 492 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
 493                                     const u8 *resp, size_t resp_len)
 494 {
 495         struct sk_buff *new, *old;
 496
 497         if (!resp || !resp_len)
 498                 return 1;
 499
 500         old = rtnl_dereference(sdata->u.ap.probe_resp);
 501
 502         new = dev_alloc_skb(resp_len);
 503         if (!new)
 504                 return -ENOMEM;
 505
 506         memcpy(skb_put(new, resp_len), resp, resp_len);
 507
 508         rcu_assign_pointer(sdata->u.ap.probe_resp, new);
 509         if (old) {
 510                 /* TODO: use call_rcu() */
 511                 synchronize_rcu();
 512                 dev_kfree_skb(old);
 513         }
 514
 515         return 0;
 516 }
 517
 518 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
 519                                    struct cfg80211_beacon_data *params)
 520 {
 521         struct beacon_data *new, *old;
 522         int new_head_len, new_tail_len;
 523         int size, err;
 524         u32 changed = BSS_CHANGED_BEACON;
 525
 526         old = rtnl_dereference(sdata->u.ap.beacon);
 527
 528         /* Need to have a beacon head if we don't have one yet */
 529         if (!params->head && !old)
 530                 return -EINVAL;
 531
 532         /* new or old head? */
 533         if (params->head)
 534                 new_head_len = params->head_len;
 535         else
 536                 new_head_len = old->head_len;
 537
 538         /* new or old tail? */
 539         if (params->tail || !old)
 540                 /* params->tail_len will be zero for !params->tail */
 541                 new_tail_len = params->tail_len;
 542         else
 543                 new_tail_len = old->tail_len;
 544
 545         size = sizeof(*new) + new_head_len + new_tail_len;
 546
 547         new = kzalloc(size, GFP_KERNEL);
 548         if (!new)
 549                 return -ENOMEM;
 550
 551         /* start filling the new info now */
 552
 553         /*
 554          * pointers go into the block we allocated,
 555          * memory is | beacon_data | head | tail |
 556          */
 557         new->head = ((u8 *) new) + sizeof(*new);
 558         new->tail = new->head + new_head_len;
 559         new->head_len = new_head_len;
 560         new->tail_len = new_tail_len;
 561
 562         /* copy in head */
 563         if (params->head)
 564                 memcpy(new->head, params->head, new_head_len);
 565         else
 566                 memcpy(new->head, old->head, new_head_len);
 567
 568         /* copy in optional tail */
 569         if (params->tail)
 570                 memcpy(new->tail, params->tail, new_tail_len);
 571         else
 572                 if (old)
 573                         memcpy(new->tail, old->tail, new_tail_len);
 574
 575         err = ieee80211_set_probe_resp(sdata, params->probe_resp,
 576                                        params->probe_resp_len);
 577         if (err < 0)
 578                 return err;
 579         if (err == 0)
 580                 changed |= BSS_CHANGED_AP_PROBE_RESP;
 581
 582         rcu_assign_pointer(sdata->u.ap.beacon, new);
 583
 584         if (old)
 585                 kfree_rcu(old, rcu_head);
 586
 587         return changed;
 588 }
 589
 590 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
 591                               struct cfg80211_ap_settings *params)
 592 {
 593         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 594         struct beacon_data *old;
 595         struct ieee80211_sub_if_data *vlan;
 596         u32 changed = BSS_CHANGED_BEACON_INT |
 597                       BSS_CHANGED_BEACON_ENABLED |
 598                       BSS_CHANGED_BEACON |
 599                       BSS_CHANGED_SSID;
 600         int err;
 601
 602         old = rtnl_dereference(sdata->u.ap.beacon);
 603         if (old)
 604                 return -EALREADY;
 605
 606         /*
 607          * Apply control port protocol, this allows us to
 608          * not encrypt dynamic WEP control frames.
 609          */
 610         sdata->control_port_protocol = params->crypto.control_port_ethertype;
 611         sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
 612         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
 613                 vlan->control_port_protocol =
 614                         params->crypto.control_port_ethertype;
 615                 vlan->control_port_no_encrypt =
 616                         params->crypto.control_port_no_encrypt;
 617         }
 618
 619         sdata->vif.bss_conf.beacon_int = params->beacon_interval;
 620         sdata->vif.bss_conf.dtim_period = params->dtim_period;
 621
 622         sdata->vif.bss_conf.ssid_len = params->ssid_len;
 623         if (params->ssid_len)
 624                 memcpy(sdata->vif.bss_conf.ssid, params->ssid,
 625                        params->ssid_len);
 626         sdata->vif.bss_conf.hidden_ssid =
 627                 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
 628
 629         err = ieee80211_assign_beacon(sdata, &params->beacon);
 630         if (err < 0)
 631                 return err;
 632         changed |= err;
 633
 634         ieee80211_bss_info_change_notify(sdata, changed);
 635
 636         return 0;
 637 }
 638
 639 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
 640                                    struct cfg80211_beacon_data *params)
 641 {
 642         struct ieee80211_sub_if_data *sdata;
 643         struct beacon_data *old;
 644         int err;
 645
 646         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 647
 648         old = rtnl_dereference(sdata->u.ap.beacon);
 649         if (!old)
 650                 return -ENOENT;
 651
 652         err = ieee80211_assign_beacon(sdata, params);
 653         if (err < 0)
 654                 return err;
 655         ieee80211_bss_info_change_notify(sdata, err);
 656         return 0;
 657 }
 658
 659 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
 660 {
 661         struct ieee80211_sub_if_data *sdata;
 662         struct beacon_data *old;
 663
 664         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 665
 666         old = rtnl_dereference(sdata->u.ap.beacon);
 667         if (!old)
 668                 return -ENOENT;
 669
 670         RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
 671
 672         kfree_rcu(old, rcu_head);
 673
 674         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
 675
 676         return 0;
 677 }
 678
 679 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
 680 struct iapp_layer2_update {
 681         u8 da[ETH_ALEN];        /* broadcast */
 682         u8 sa[ETH_ALEN];        /* STA addr */
 683         __be16 len;             /* 6 */
 684         u8 dsap;                /* 0 */
 685         u8 ssap;                /* 0 */
 686         u8 control;
 687         u8 xid_info[3];
 688 } __packed;
 689
 690 static void ieee80211_send_layer2_update(struct sta_info *sta)
 691 {
 692         struct iapp_layer2_update *msg;
 693         struct sk_buff *skb;
 694
 695         /* Send Level 2 Update Frame to update forwarding tables in layer 2
 696          * bridge devices */
 697
 698         skb = dev_alloc_skb(sizeof(*msg));
 699         if (!skb)
 700                 return;
 701         msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
 702
 703         /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
 704          * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
 705
 706         memset(msg->da, 0xff, ETH_ALEN);
 707         memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
 708         msg->len = htons(6);
 709         msg->dsap = 0;
 710         msg->ssap = 0x01;       /* NULL LSAP, CR Bit: Response */
 711         msg->control = 0xaf;    /* XID response lsb.1111F101.
 712                                  * F=0 (no poll command; unsolicited frame) */
 713         msg->xid_info[0] = 0x81;        /* XID format identifier */
 714         msg->xid_info[1] = 1;   /* LLC types/classes: Type 1 LLC */
 715         msg->xid_info[2] = 0;   /* XID sender's receive window size (RW) */
 716
 717         skb->dev = sta->sdata->dev;
 718         skb->protocol = eth_type_trans(skb, sta->sdata->dev);
 719         memset(skb->cb, 0, sizeof(skb->cb));
 720         netif_rx_ni(skb);
 721 }
 722
 723 static int sta_apply_parameters(struct ieee80211_local *local,
 724                                 struct sta_info *sta,
 725                                 struct station_parameters *params)
 726 {
 727         int ret = 0;
 728         u32 rates;
 729         int i, j;
 730         struct ieee80211_supported_band *sband;
 731         struct ieee80211_sub_if_data *sdata = sta->sdata;
 732         u32 mask, set;
 733
 734         sband = local->hw.wiphy->bands[local->oper_channel->band];
 735
 736         mask = params->sta_flags_mask;
 737         set = params->sta_flags_set;
 738
 739         /*
 740          * In mesh mode, we can clear AUTHENTICATED flag but must
 741          * also make ASSOCIATED follow appropriately for the driver
 742          * API. See also below, after AUTHORIZED changes.
 743          */
 744         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) {
 745                 /* cfg80211 should not allow this in non-mesh modes */
 746                 if (WARN_ON(!ieee80211_vif_is_mesh(&sdata->vif)))
 747                         return -EINVAL;
 748
 749                 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
 750                     !test_sta_flag(sta, WLAN_STA_AUTH)) {
 751                         ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
 752                         if (ret)
 753                                 return ret;
 754                         ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
 755                         if (ret)
 756                                 return ret;
 757                 }
 758         }
 759
 760         if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
 761                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
 762                         ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
 763                 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
 764                         ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
 765                 if (ret)
 766                         return ret;
 767         }
 768
 769         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) {
 770                 /* cfg80211 should not allow this in non-mesh modes */
 771                 if (WARN_ON(!ieee80211_vif_is_mesh(&sdata->vif)))
 772                         return -EINVAL;
 773
 774                 if (!(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
 775                     test_sta_flag(sta, WLAN_STA_AUTH)) {
 776                         ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
 777                         if (ret)
 778                                 return ret;
 779                         ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
 780                         if (ret)
 781                                 return ret;
 782                 }
 783         }
 784
 785
 786         if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
 787                 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
 788                         set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
 789                 else
 790                         clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
 791         }
 792
 793         if (mask & BIT(NL80211_STA_FLAG_WME)) {
 794                 if (set & BIT(NL80211_STA_FLAG_WME)) {
 795                         set_sta_flag(sta, WLAN_STA_WME);
 796                         sta->sta.wme = true;
 797                 } else {
 798                         clear_sta_flag(sta, WLAN_STA_WME);
 799                         sta->sta.wme = false;
 800                 }
 801         }
 802
 803         if (mask & BIT(NL80211_STA_FLAG_MFP)) {
 804                 if (set & BIT(NL80211_STA_FLAG_MFP))
 805                         set_sta_flag(sta, WLAN_STA_MFP);
 806                 else
 807                         clear_sta_flag(sta, WLAN_STA_MFP);
 808         }
 809
 810         if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
 811                 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
 812                         set_sta_flag(sta, WLAN_STA_TDLS_PEER);
 813                 else
 814                         clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
 815         }
 816
 817         if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
 818                 sta->sta.uapsd_queues = params->uapsd_queues;
 819                 sta->sta.max_sp = params->max_sp;
 820         }
 821
 822         /*
 823          * cfg80211 validates this (1-2007) and allows setting the AID
 824          * only when creating a new station entry
 825          */
 826         if (params->aid)
 827                 sta->sta.aid = params->aid;
 828
 829         /*
 830          * FIXME: updating the following information is racy when this
 831          *        function is called from ieee80211_change_station().
 832          *        However, all this information should be static so
 833          *        maybe we should just reject attemps to change it.
 834          */
 835
 836         if (params->listen_interval >= 0)
 837                 sta->listen_interval = params->listen_interval;
 838
 839         if (params->supported_rates) {
 840                 rates = 0;
 841
 842                 for (i = 0; i < params->supported_rates_len; i++) {
 843                         int rate = (params->supported_rates[i] & 0x7f) * 5;
 844                         for (j = 0; j < sband->n_bitrates; j++) {
 845                                 if (sband->bitrates[j].bitrate == rate)
 846                                         rates |= BIT(j);
 847                         }
 848                 }
 849                 sta->sta.supp_rates[local->oper_channel->band] = rates;
 850         }
 851
 852         if (params->ht_capa)
 853                 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
 854                                                   params->ht_capa,
 855                                                   &sta->sta.ht_cap);
 856
 857         if (ieee80211_vif_is_mesh(&sdata->vif)) {
 858 #ifdef CONFIG_MAC80211_MESH
 859                 if (sdata->u.mesh.security & IEEE80211_MESH_SEC_SECURED)
 860                         switch (params->plink_state) {
 861                         case NL80211_PLINK_LISTEN:
 862                         case NL80211_PLINK_ESTAB:
 863                         case NL80211_PLINK_BLOCKED:
 864                                 sta->plink_state = params->plink_state;
 865                                 break;
 866                         default:
 867                                 /*  nothing  */
 868                                 break;
 869                         }
 870                 else
 871                         switch (params->plink_action) {
 872                         case PLINK_ACTION_OPEN:
 873                                 mesh_plink_open(sta);
 874                                 break;
 875                         case PLINK_ACTION_BLOCK:
 876                                 mesh_plink_block(sta);
 877                                 break;
 878                         }
 879 #endif
 880         }
 881
 882         return 0;
 883 }
 884
 885 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
 886                                  u8 *mac, struct station_parameters *params)
 887 {
 888         struct ieee80211_local *local = wiphy_priv(wiphy);
 889         struct sta_info *sta;
 890         struct ieee80211_sub_if_data *sdata;
 891         int err;
 892         int layer2_update;
 893
 894         if (params->vlan) {
 895                 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
 896
 897                 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
 898                     sdata->vif.type != NL80211_IFTYPE_AP)
 899                         return -EINVAL;
 900         } else
 901                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 902
 903         if (compare_ether_addr(mac, sdata->vif.addr) == 0)
 904                 return -EINVAL;
 905
 906         if (is_multicast_ether_addr(mac))
 907                 return -EINVAL;
 908
 909         sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
 910         if (!sta)
 911                 return -ENOMEM;
 912
 913         sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
 914         sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC);
 915
 916         err = sta_apply_parameters(local, sta, params);
 917         if (err) {
 918                 sta_info_free(local, sta);
 919                 return err;
 920         }
 921
 922         /*
 923          * for TDLS, rate control should be initialized only when supported
 924          * rates are known.
 925          */
 926         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER))
 927                 rate_control_rate_init(sta);
 928
 929         layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
 930                 sdata->vif.type == NL80211_IFTYPE_AP;
 931
 932         err = sta_info_insert_rcu(sta);
 933         if (err) {
 934                 rcu_read_unlock();
 935                 return err;
 936         }
 937
 938         if (layer2_update)
 939                 ieee80211_send_layer2_update(sta);
 940
 941         rcu_read_unlock();
 942
 943         return 0;
 944 }
 945
 946 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
 947                                  u8 *mac)
 948 {
 949         struct ieee80211_local *local = wiphy_priv(wiphy);
 950         struct ieee80211_sub_if_data *sdata;
 951
 952         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 953
 954         if (mac)
 955                 return sta_info_destroy_addr_bss(sdata, mac);
 956
 957         sta_info_flush(local, sdata);
 958         return 0;
 959 }
 960
 961 static int ieee80211_change_station(struct wiphy *wiphy,
 962                                     struct net_device *dev,
 963                                     u8 *mac,
 964                                     struct station_parameters *params)
 965 {
 966         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 967         struct ieee80211_local *local = wiphy_priv(wiphy);
 968         struct sta_info *sta;
 969         struct ieee80211_sub_if_data *vlansdata;
 970         int err;
 971
 972         mutex_lock(&local->sta_mtx);
 973
 974         sta = sta_info_get_bss(sdata, mac);
 975         if (!sta) {
 976                 mutex_unlock(&local->sta_mtx);
 977                 return -ENOENT;
 978         }
 979
 980         /* in station mode, supported rates are only valid with TDLS */
 981         if (sdata->vif.type == NL80211_IFTYPE_STATION &&
 982             params->supported_rates &&
 983             !test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
 984                 mutex_unlock(&local->sta_mtx);
 985                 return -EINVAL;
 986         }
 987
 988         if (params->vlan && params->vlan != sta->sdata->dev) {
 989                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
 990
 991                 if (vlansdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
 992                     vlansdata->vif.type != NL80211_IFTYPE_AP) {
 993                         mutex_unlock(&local->sta_mtx);
 994                         return -EINVAL;
 995                 }
 996
 997                 if (params->vlan->ieee80211_ptr->use_4addr) {
 998                         if (vlansdata->u.vlan.sta) {
 999                                 mutex_unlock(&local->sta_mtx);
1000                                 return -EBUSY;
1001                         }
1002
1003                         rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1004                 }
1005
1006                 sta->sdata = vlansdata;
1007                 ieee80211_send_layer2_update(sta);
1008         }
1009
1010         err = sta_apply_parameters(local, sta, params);
1011         if (err) {
1012                 mutex_unlock(&local->sta_mtx);
1013                 return err;
1014         }
1015
1016         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) && params->supported_rates)
1017                 rate_control_rate_init(sta);
1018
1019         mutex_unlock(&local->sta_mtx);
1020
1021         if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1022             params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED))
1023                 ieee80211_recalc_ps(local, -1);
1024
1025         return 0;
1026 }
1027
1028 #ifdef CONFIG_MAC80211_MESH
1029 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1030                                  u8 *dst, u8 *next_hop)
1031 {
1032         struct ieee80211_sub_if_data *sdata;
1033         struct mesh_path *mpath;
1034         struct sta_info *sta;
1035         int err;
1036
1037         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1038
1039         rcu_read_lock();
1040         sta = sta_info_get(sdata, next_hop);
1041         if (!sta) {
1042                 rcu_read_unlock();
1043                 return -ENOENT;
1044         }
1045
1046         err = mesh_path_add(dst, sdata);
1047         if (err) {
1048                 rcu_read_unlock();
1049                 return err;
1050         }
1051
1052         mpath = mesh_path_lookup(dst, sdata);
1053         if (!mpath) {
1054                 rcu_read_unlock();
1055                 return -ENXIO;
1056         }
1057         mesh_path_fix_nexthop(mpath, sta);
1058
1059         rcu_read_unlock();
1060         return 0;
1061 }
1062
1063 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1064                                  u8 *dst)
1065 {
1066         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1067
1068         if (dst)
1069                 return mesh_path_del(dst, sdata);
1070
1071         mesh_path_flush_by_iface(sdata);
1072         return 0;
1073 }
1074
1075 static int ieee80211_change_mpath(struct wiphy *wiphy,
1076                                     struct net_device *dev,
1077                                     u8 *dst, u8 *next_hop)
1078 {
1079         struct ieee80211_sub_if_data *sdata;
1080         struct mesh_path *mpath;
1081         struct sta_info *sta;
1082
1083         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1084
1085         rcu_read_lock();
1086
1087         sta = sta_info_get(sdata, next_hop);
1088         if (!sta) {
1089                 rcu_read_unlock();
1090                 return -ENOENT;
1091         }
1092
1093         mpath = mesh_path_lookup(dst, sdata);
1094         if (!mpath) {
1095                 rcu_read_unlock();
1096                 return -ENOENT;
1097         }
1098
1099         mesh_path_fix_nexthop(mpath, sta);
1100
1101         rcu_read_unlock();
1102         return 0;
1103 }
1104
1105 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1106                             struct mpath_info *pinfo)
1107 {
1108         struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1109
1110         if (next_hop_sta)
1111                 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1112         else
1113                 memset(next_hop, 0, ETH_ALEN);
1114
1115         pinfo->generation = mesh_paths_generation;
1116
1117         pinfo->filled = MPATH_INFO_FRAME_QLEN |
1118                         MPATH_INFO_SN |
1119                         MPATH_INFO_METRIC |
1120                         MPATH_INFO_EXPTIME |
1121                         MPATH_INFO_DISCOVERY_TIMEOUT |
1122                         MPATH_INFO_DISCOVERY_RETRIES |
1123                         MPATH_INFO_FLAGS;
1124
1125         pinfo->frame_qlen = mpath->frame_queue.qlen;
1126         pinfo->sn = mpath->sn;
1127         pinfo->metric = mpath->metric;
1128         if (time_before(jiffies, mpath->exp_time))
1129                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1130         pinfo->discovery_timeout =
1131                         jiffies_to_msecs(mpath->discovery_timeout);
1132         pinfo->discovery_retries = mpath->discovery_retries;
1133         pinfo->flags = 0;
1134         if (mpath->flags & MESH_PATH_ACTIVE)
1135                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1136         if (mpath->flags & MESH_PATH_RESOLVING)
1137                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1138         if (mpath->flags & MESH_PATH_SN_VALID)
1139                 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1140         if (mpath->flags & MESH_PATH_FIXED)
1141                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1142         if (mpath->flags & MESH_PATH_RESOLVING)
1143                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1144
1145         pinfo->flags = mpath->flags;
1146 }
1147
1148 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1149                                u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1150
1151 {
1152         struct ieee80211_sub_if_data *sdata;
1153         struct mesh_path *mpath;
1154
1155         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1156
1157         rcu_read_lock();
1158         mpath = mesh_path_lookup(dst, sdata);
1159         if (!mpath) {
1160                 rcu_read_unlock();
1161                 return -ENOENT;
1162         }
1163         memcpy(dst, mpath->dst, ETH_ALEN);
1164         mpath_set_pinfo(mpath, next_hop, pinfo);
1165         rcu_read_unlock();
1166         return 0;
1167 }
1168
1169 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1170                                  int idx, u8 *dst, u8 *next_hop,
1171                                  struct mpath_info *pinfo)
1172 {
1173         struct ieee80211_sub_if_data *sdata;
1174         struct mesh_path *mpath;
1175
1176         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1177
1178         rcu_read_lock();
1179         mpath = mesh_path_lookup_by_idx(idx, sdata);
1180         if (!mpath) {
1181                 rcu_read_unlock();
1182                 return -ENOENT;
1183         }
1184         memcpy(dst, mpath->dst, ETH_ALEN);
1185         mpath_set_pinfo(mpath, next_hop, pinfo);
1186         rcu_read_unlock();
1187         return 0;
1188 }
1189
1190 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1191                                 struct net_device *dev,
1192                                 struct mesh_config *conf)
1193 {
1194         struct ieee80211_sub_if_data *sdata;
1195         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1196
1197         memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1198         return 0;
1199 }
1200
1201 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1202 {
1203         return (mask >> (parm-1)) & 0x1;
1204 }
1205
1206 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1207                 const struct mesh_setup *setup)
1208 {
1209         u8 *new_ie;
1210         const u8 *old_ie;
1211         struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1212                                         struct ieee80211_sub_if_data, u.mesh);
1213
1214         /* allocate information elements */
1215         new_ie = NULL;
1216         old_ie = ifmsh->ie;
1217
1218         if (setup->ie_len) {
1219                 new_ie = kmemdup(setup->ie, setup->ie_len,
1220                                 GFP_KERNEL);
1221                 if (!new_ie)
1222                         return -ENOMEM;
1223         }
1224         ifmsh->ie_len = setup->ie_len;
1225         ifmsh->ie = new_ie;
1226         kfree(old_ie);
1227
1228         /* now copy the rest of the setup parameters */
1229         ifmsh->mesh_id_len = setup->mesh_id_len;
1230         memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1231         ifmsh->mesh_pp_id = setup->path_sel_proto;
1232         ifmsh->mesh_pm_id = setup->path_metric;
1233         ifmsh->security = IEEE80211_MESH_SEC_NONE;
1234         if (setup->is_authenticated)
1235                 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1236         if (setup->is_secure)
1237                 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1238
1239         /* mcast rate setting in Mesh Node */
1240         memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1241                                                 sizeof(setup->mcast_rate));
1242
1243         return 0;
1244 }
1245
1246 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1247                                         struct net_device *dev, u32 mask,
1248                                         const struct mesh_config *nconf)
1249 {
1250         struct mesh_config *conf;
1251         struct ieee80211_sub_if_data *sdata;
1252         struct ieee80211_if_mesh *ifmsh;
1253
1254         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1255         ifmsh = &sdata->u.mesh;
1256
1257         /* Set the config options which we are interested in setting */
1258         conf = &(sdata->u.mesh.mshcfg);
1259         if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1260                 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1261         if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1262                 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1263         if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1264                 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1265         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1266                 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1267         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1268                 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1269         if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1270                 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1271         if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1272                 conf->dot11MeshTTL = nconf->element_ttl;
1273         if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask))
1274                 conf->auto_open_plinks = nconf->auto_open_plinks;
1275         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1276                 conf->dot11MeshHWMPmaxPREQretries =
1277                         nconf->dot11MeshHWMPmaxPREQretries;
1278         if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1279                 conf->path_refresh_time = nconf->path_refresh_time;
1280         if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1281                 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1282         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1283                 conf->dot11MeshHWMPactivePathTimeout =
1284                         nconf->dot11MeshHWMPactivePathTimeout;
1285         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1286                 conf->dot11MeshHWMPpreqMinInterval =
1287                         nconf->dot11MeshHWMPpreqMinInterval;
1288         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1289                 conf->dot11MeshHWMPperrMinInterval =
1290                         nconf->dot11MeshHWMPperrMinInterval;
1291         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1292                            mask))
1293                 conf->dot11MeshHWMPnetDiameterTraversalTime =
1294                         nconf->dot11MeshHWMPnetDiameterTraversalTime;
1295         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1296                 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1297                 ieee80211_mesh_root_setup(ifmsh);
1298         }
1299         if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1300                 /* our current gate announcement implementation rides on root
1301                  * announcements, so require this ifmsh to also be a root node
1302                  * */
1303                 if (nconf->dot11MeshGateAnnouncementProtocol &&
1304                     !conf->dot11MeshHWMPRootMode) {
1305                         conf->dot11MeshHWMPRootMode = 1;
1306                         ieee80211_mesh_root_setup(ifmsh);
1307                 }
1308                 conf->dot11MeshGateAnnouncementProtocol =
1309                         nconf->dot11MeshGateAnnouncementProtocol;
1310         }
1311         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask)) {
1312                 conf->dot11MeshHWMPRannInterval =
1313                         nconf->dot11MeshHWMPRannInterval;
1314         }
1315         if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
1316                 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1317         return 0;
1318 }
1319
1320 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1321                                const struct mesh_config *conf,
1322                                const struct mesh_setup *setup)
1323 {
1324         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1325         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1326         int err;
1327
1328         memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1329         err = copy_mesh_setup(ifmsh, setup);
1330         if (err)
1331                 return err;
1332         ieee80211_start_mesh(sdata);
1333
1334         return 0;
1335 }
1336
1337 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1338 {
1339         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1340
1341         ieee80211_stop_mesh(sdata);
1342
1343         return 0;
1344 }
1345 #endif
1346
1347 static int ieee80211_change_bss(struct wiphy *wiphy,
1348                                 struct net_device *dev,
1349                                 struct bss_parameters *params)
1350 {
1351         struct ieee80211_sub_if_data *sdata;
1352         u32 changed = 0;
1353
1354         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1355
1356         if (params->use_cts_prot >= 0) {
1357                 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1358                 changed |= BSS_CHANGED_ERP_CTS_PROT;
1359         }
1360         if (params->use_short_preamble >= 0) {
1361                 sdata->vif.bss_conf.use_short_preamble =
1362                         params->use_short_preamble;
1363                 changed |= BSS_CHANGED_ERP_PREAMBLE;
1364         }
1365
1366         if (!sdata->vif.bss_conf.use_short_slot &&
1367             sdata->local->hw.conf.channel->band == IEEE80211_BAND_5GHZ) {
1368                 sdata->vif.bss_conf.use_short_slot = true;
1369                 changed |= BSS_CHANGED_ERP_SLOT;
1370         }
1371
1372         if (params->use_short_slot_time >= 0) {
1373                 sdata->vif.bss_conf.use_short_slot =
1374                         params->use_short_slot_time;
1375                 changed |= BSS_CHANGED_ERP_SLOT;
1376         }
1377
1378         if (params->basic_rates) {
1379                 int i, j;
1380                 u32 rates = 0;
1381                 struct ieee80211_local *local = wiphy_priv(wiphy);
1382                 struct ieee80211_supported_band *sband =
1383                         wiphy->bands[local->oper_channel->band];
1384
1385                 for (i = 0; i < params->basic_rates_len; i++) {
1386                         int rate = (params->basic_rates[i] & 0x7f) * 5;
1387                         for (j = 0; j < sband->n_bitrates; j++) {
1388                                 if (sband->bitrates[j].bitrate == rate)
1389                                         rates |= BIT(j);
1390                         }
1391                 }
1392                 sdata->vif.bss_conf.basic_rates = rates;
1393                 changed |= BSS_CHANGED_BASIC_RATES;
1394         }
1395
1396         if (params->ap_isolate >= 0) {
1397                 if (params->ap_isolate)
1398                         sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1399                 else
1400                         sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1401         }
1402
1403         if (params->ht_opmode >= 0) {
1404                 sdata->vif.bss_conf.ht_operation_mode =
1405                         (u16) params->ht_opmode;
1406                 changed |= BSS_CHANGED_HT;
1407         }
1408
1409         ieee80211_bss_info_change_notify(sdata, changed);
1410
1411         return 0;
1412 }
1413
1414 static int ieee80211_set_txq_params(struct wiphy *wiphy,
1415                                     struct net_device *dev,
1416                                     struct ieee80211_txq_params *params)
1417 {
1418         struct ieee80211_local *local = wiphy_priv(wiphy);
1419         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1420         struct ieee80211_tx_queue_params p;
1421
1422         if (!local->ops->conf_tx)
1423                 return -EOPNOTSUPP;
1424
1425         memset(&p, 0, sizeof(p));
1426         p.aifs = params->aifs;
1427         p.cw_max = params->cwmax;
1428         p.cw_min = params->cwmin;
1429         p.txop = params->txop;
1430
1431         /*
1432          * Setting tx queue params disables u-apsd because it's only
1433          * called in master mode.
1434          */
1435         p.uapsd = false;
1436
1437         if (params->queue >= local->hw.queues)
1438                 return -EINVAL;
1439
1440         sdata->tx_conf[params->queue] = p;
1441         if (drv_conf_tx(local, sdata, params->queue, &p)) {
1442                 wiphy_debug(local->hw.wiphy,
1443                             "failed to set TX queue parameters for queue %d\n",
1444                             params->queue);
1445                 return -EINVAL;
1446         }
1447
1448         return 0;
1449 }
1450
1451 static int ieee80211_set_channel(struct wiphy *wiphy,
1452                                  struct net_device *netdev,
1453                                  struct ieee80211_channel *chan,
1454                                  enum nl80211_channel_type channel_type)
1455 {
1456         struct ieee80211_local *local = wiphy_priv(wiphy);
1457         struct ieee80211_sub_if_data *sdata = NULL;
1458         struct ieee80211_channel *old_oper;
1459         enum nl80211_channel_type old_oper_type;
1460         enum nl80211_channel_type old_vif_oper_type= NL80211_CHAN_NO_HT;
1461
1462         if (netdev)
1463                 sdata = IEEE80211_DEV_TO_SUB_IF(netdev);
1464
1465         switch (ieee80211_get_channel_mode(local, NULL)) {
1466         case CHAN_MODE_HOPPING:
1467                 return -EBUSY;
1468         case CHAN_MODE_FIXED:
1469                 if (local->oper_channel != chan)
1470                         return -EBUSY;
1471                 if (!sdata && local->_oper_channel_type == channel_type)
1472                         return 0;
1473                 break;
1474         case CHAN_MODE_UNDEFINED:
1475                 break;
1476         }
1477
1478         if (sdata)
1479                 old_vif_oper_type = sdata->vif.bss_conf.channel_type;
1480         old_oper_type = local->_oper_channel_type;
1481
1482         if (!ieee80211_set_channel_type(local, sdata, channel_type))
1483                 return -EBUSY;
1484
1485         old_oper = local->oper_channel;
1486         local->oper_channel = chan;
1487
1488         /* Update driver if changes were actually made. */
1489         if ((old_oper != local->oper_channel) ||
1490             (old_oper_type != local->_oper_channel_type))
1491                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL);
1492
1493         if (sdata && sdata->vif.type != NL80211_IFTYPE_MONITOR &&
1494             old_vif_oper_type != sdata->vif.bss_conf.channel_type)
1495                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1496
1497         return 0;
1498 }
1499
1500 #ifdef CONFIG_PM
1501 static int ieee80211_suspend(struct wiphy *wiphy,
1502                              struct cfg80211_wowlan *wowlan)
1503 {
1504         return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
1505 }
1506
1507 static int ieee80211_resume(struct wiphy *wiphy)
1508 {
1509         return __ieee80211_resume(wiphy_priv(wiphy));
1510 }
1511 #else
1512 #define ieee80211_suspend NULL
1513 #define ieee80211_resume NULL
1514 #endif
1515
1516 static int ieee80211_scan(struct wiphy *wiphy,
1517                           struct net_device *dev,
1518                           struct cfg80211_scan_request *req)
1519 {
1520         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1521
1522         switch (ieee80211_vif_type_p2p(&sdata->vif)) {
1523         case NL80211_IFTYPE_STATION:
1524         case NL80211_IFTYPE_ADHOC:
1525         case NL80211_IFTYPE_MESH_POINT:
1526         case NL80211_IFTYPE_P2P_CLIENT:
1527                 break;
1528         case NL80211_IFTYPE_P2P_GO:
1529                 if (sdata->local->ops->hw_scan)
1530                         break;
1531                 /*
1532                  * FIXME: implement NoA while scanning in software,
1533                  * for now fall through to allow scanning only when
1534                  * beaconing hasn't been configured yet
1535                  */
1536         case NL80211_IFTYPE_AP:
1537                 if (sdata->u.ap.beacon)
1538                         return -EOPNOTSUPP;
1539                 break;
1540         default:
1541                 return -EOPNOTSUPP;
1542         }
1543
1544         return ieee80211_request_scan(sdata, req);
1545 }
1546
1547 static int
1548 ieee80211_sched_scan_start(struct wiphy *wiphy,
1549                            struct net_device *dev,
1550                            struct cfg80211_sched_scan_request *req)
1551 {
1552         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1553
1554         if (!sdata->local->ops->sched_scan_start)
1555                 return -EOPNOTSUPP;
1556
1557         return ieee80211_request_sched_scan_start(sdata, req);
1558 }
1559
1560 static int
1561 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
1562 {
1563         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1564
1565         if (!sdata->local->ops->sched_scan_stop)
1566                 return -EOPNOTSUPP;
1567
1568         return ieee80211_request_sched_scan_stop(sdata);
1569 }
1570
1571 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
1572                           struct cfg80211_auth_request *req)
1573 {
1574         return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
1575 }
1576
1577 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
1578                            struct cfg80211_assoc_request *req)
1579 {
1580         struct ieee80211_local *local = wiphy_priv(wiphy);
1581         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1582
1583         switch (ieee80211_get_channel_mode(local, sdata)) {
1584         case CHAN_MODE_HOPPING:
1585                 return -EBUSY;
1586         case CHAN_MODE_FIXED:
1587                 if (local->oper_channel == req->bss->channel)
1588                         break;
1589                 return -EBUSY;
1590         case CHAN_MODE_UNDEFINED:
1591                 break;
1592         }
1593
1594         return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
1595 }
1596
1597 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
1598                             struct cfg80211_deauth_request *req)
1599 {
1600         return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
1601 }
1602
1603 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
1604                               struct cfg80211_disassoc_request *req)
1605 {
1606         return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
1607 }
1608
1609 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1610                                struct cfg80211_ibss_params *params)
1611 {
1612         struct ieee80211_local *local = wiphy_priv(wiphy);
1613         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1614
1615         switch (ieee80211_get_channel_mode(local, sdata)) {
1616         case CHAN_MODE_HOPPING:
1617                 return -EBUSY;
1618         case CHAN_MODE_FIXED:
1619                 if (!params->channel_fixed)
1620                         return -EBUSY;
1621                 if (local->oper_channel == params->channel)
1622                         break;
1623                 return -EBUSY;
1624         case CHAN_MODE_UNDEFINED:
1625                 break;
1626         }
1627
1628         return ieee80211_ibss_join(sdata, params);
1629 }
1630
1631 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
1632 {
1633         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1634
1635         return ieee80211_ibss_leave(sdata);
1636 }
1637
1638 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1639 {
1640         struct ieee80211_local *local = wiphy_priv(wiphy);
1641         int err;
1642
1643         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
1644                 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
1645
1646                 if (err)
1647                         return err;
1648         }
1649
1650         if (changed & WIPHY_PARAM_COVERAGE_CLASS) {
1651                 err = drv_set_coverage_class(local, wiphy->coverage_class);
1652
1653                 if (err)
1654                         return err;
1655         }
1656
1657         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1658                 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
1659
1660                 if (err)
1661                         return err;
1662         }
1663
1664         if (changed & WIPHY_PARAM_RETRY_SHORT)
1665                 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
1666         if (changed & WIPHY_PARAM_RETRY_LONG)
1667                 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
1668         if (changed &
1669             (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
1670                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
1671
1672         return 0;
1673 }
1674
1675 static int ieee80211_set_tx_power(struct wiphy *wiphy,
1676                                   enum nl80211_tx_power_setting type, int mbm)
1677 {
1678         struct ieee80211_local *local = wiphy_priv(wiphy);
1679         struct ieee80211_channel *chan = local->hw.conf.channel;
1680         u32 changes = 0;
1681
1682         switch (type) {
1683         case NL80211_TX_POWER_AUTOMATIC:
1684                 local->user_power_level = -1;
1685                 break;
1686         case NL80211_TX_POWER_LIMITED:
1687                 if (mbm < 0 || (mbm % 100))
1688                         return -EOPNOTSUPP;
1689                 local->user_power_level = MBM_TO_DBM(mbm);
1690                 break;
1691         case NL80211_TX_POWER_FIXED:
1692                 if (mbm < 0 || (mbm % 100))
1693                         return -EOPNOTSUPP;
1694                 /* TODO: move to cfg80211 when it knows the channel */
1695                 if (MBM_TO_DBM(mbm) > chan->max_power)
1696                         return -EINVAL;
1697                 local->user_power_level = MBM_TO_DBM(mbm);
1698                 break;
1699         }
1700
1701         ieee80211_hw_config(local, changes);
1702
1703         return 0;
1704 }
1705
1706 static int ieee80211_get_tx_power(struct wiphy *wiphy, int *dbm)
1707 {
1708         struct ieee80211_local *local = wiphy_priv(wiphy);
1709
1710         *dbm = local->hw.conf.power_level;
1711
1712         return 0;
1713 }
1714
1715 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
1716                                   const u8 *addr)
1717 {
1718         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1719
1720         memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
1721
1722         return 0;
1723 }
1724
1725 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
1726 {
1727         struct ieee80211_local *local = wiphy_priv(wiphy);
1728
1729         drv_rfkill_poll(local);
1730 }
1731
1732 #ifdef CONFIG_NL80211_TESTMODE
1733 static int ieee80211_testmode_cmd(struct wiphy *wiphy, void *data, int len)
1734 {
1735         struct ieee80211_local *local = wiphy_priv(wiphy);
1736
1737         if (!local->ops->testmode_cmd)
1738                 return -EOPNOTSUPP;
1739
1740         return local->ops->testmode_cmd(&local->hw, data, len);
1741 }
1742
1743 static int ieee80211_testmode_dump(struct wiphy *wiphy,
1744                                    struct sk_buff *skb,
1745                                    struct netlink_callback *cb,
1746                                    void *data, int len)
1747 {
1748         struct ieee80211_local *local = wiphy_priv(wiphy);
1749
1750         if (!local->ops->testmode_dump)
1751                 return -EOPNOTSUPP;
1752
1753         return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
1754 }
1755 #endif
1756
1757 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
1758                              enum ieee80211_smps_mode smps_mode)
1759 {
1760         const u8 *ap;
1761         enum ieee80211_smps_mode old_req;
1762         int err;
1763
1764         lockdep_assert_held(&sdata->u.mgd.mtx);
1765
1766         old_req = sdata->u.mgd.req_smps;
1767         sdata->u.mgd.req_smps = smps_mode;
1768
1769         if (old_req == smps_mode &&
1770             smps_mode != IEEE80211_SMPS_AUTOMATIC)
1771                 return 0;
1772
1773         /*
1774          * If not associated, or current association is not an HT
1775          * association, there's no need to send an action frame.
1776          */
1777         if (!sdata->u.mgd.associated ||
1778             sdata->vif.bss_conf.channel_type == NL80211_CHAN_NO_HT) {
1779                 mutex_lock(&sdata->local->iflist_mtx);
1780                 ieee80211_recalc_smps(sdata->local);
1781                 mutex_unlock(&sdata->local->iflist_mtx);
1782                 return 0;
1783         }
1784
1785         ap = sdata->u.mgd.associated->bssid;
1786
1787         if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
1788                 if (sdata->u.mgd.powersave)
1789                         smps_mode = IEEE80211_SMPS_DYNAMIC;
1790                 else
1791                         smps_mode = IEEE80211_SMPS_OFF;
1792         }
1793
1794         /* send SM PS frame to AP */
1795         err = ieee80211_send_smps_action(sdata, smps_mode,
1796                                          ap, ap);
1797         if (err)
1798                 sdata->u.mgd.req_smps = old_req;
1799
1800         return err;
1801 }
1802
1803 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
1804                                     bool enabled, int timeout)
1805 {
1806         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1807         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1808
1809         if (sdata->vif.type != NL80211_IFTYPE_STATION)
1810                 return -EOPNOTSUPP;
1811
1812         if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
1813                 return -EOPNOTSUPP;
1814
1815         if (enabled == sdata->u.mgd.powersave &&
1816             timeout == local->dynamic_ps_forced_timeout)
1817                 return 0;
1818
1819         sdata->u.mgd.powersave = enabled;
1820         local->dynamic_ps_forced_timeout = timeout;
1821
1822         /* no change, but if automatic follow powersave */
1823         mutex_lock(&sdata->u.mgd.mtx);
1824         __ieee80211_request_smps(sdata, sdata->u.mgd.req_smps);
1825         mutex_unlock(&sdata->u.mgd.mtx);
1826
1827         if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
1828                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1829
1830         ieee80211_recalc_ps(local, -1);
1831
1832         return 0;
1833 }
1834
1835 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
1836                                          struct net_device *dev,
1837                                          s32 rssi_thold, u32 rssi_hyst)
1838 {
1839         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1840         struct ieee80211_vif *vif = &sdata->vif;
1841         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
1842
1843         if (rssi_thold == bss_conf->cqm_rssi_thold &&
1844             rssi_hyst == bss_conf->cqm_rssi_hyst)
1845                 return 0;
1846
1847         bss_conf->cqm_rssi_thold = rssi_thold;
1848         bss_conf->cqm_rssi_hyst = rssi_hyst;
1849
1850         /* tell the driver upon association, unless already associated */
1851         if (sdata->u.mgd.associated &&
1852             sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
1853                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
1854
1855         return 0;
1856 }
1857
1858 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
1859                                       struct net_device *dev,
1860                                       const u8 *addr,
1861                                       const struct cfg80211_bitrate_mask *mask)
1862 {
1863         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1864         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1865         int i, ret;
1866
1867         if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) {
1868                 ret = drv_set_bitrate_mask(local, sdata, mask);
1869                 if (ret)
1870                         return ret;
1871         }
1872
1873         for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
1874                 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
1875                 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].mcs,
1876                        sizeof(mask->control[i].mcs));
1877         }
1878
1879         return 0;
1880 }
1881
1882 static int ieee80211_remain_on_channel_hw(struct ieee80211_local *local,
1883                                           struct net_device *dev,
1884                                           struct ieee80211_channel *chan,
1885                                           enum nl80211_channel_type chantype,
1886                                           unsigned int duration, u64 *cookie)
1887 {
1888         int ret;
1889         u32 random_cookie;
1890
1891         lockdep_assert_held(&local->mtx);
1892
1893         if (local->hw_roc_cookie)
1894                 return -EBUSY;
1895         /* must be nonzero */
1896         random_cookie = random32() | 1;
1897
1898         *cookie = random_cookie;
1899         local->hw_roc_dev = dev;
1900         local->hw_roc_cookie = random_cookie;
1901         local->hw_roc_channel = chan;
1902         local->hw_roc_channel_type = chantype;
1903         local->hw_roc_duration = duration;
1904         ret = drv_remain_on_channel(local, chan, chantype, duration);
1905         if (ret) {
1906                 local->hw_roc_channel = NULL;
1907                 local->hw_roc_cookie = 0;
1908         }
1909
1910         return ret;
1911 }
1912
1913 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
1914                                        struct net_device *dev,
1915                                        struct ieee80211_channel *chan,
1916                                        enum nl80211_channel_type channel_type,
1917                                        unsigned int duration,
1918                                        u64 *cookie)
1919 {
1920         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1921         struct ieee80211_local *local = sdata->local;
1922
1923         if (local->ops->remain_on_channel) {
1924                 int ret;
1925
1926                 mutex_lock(&local->mtx);
1927                 ret = ieee80211_remain_on_channel_hw(local, dev,
1928                                                      chan, channel_type,
1929                                                      duration, cookie);
1930                 local->hw_roc_for_tx = false;
1931                 mutex_unlock(&local->mtx);
1932
1933                 return ret;
1934         }
1935
1936         return ieee80211_wk_remain_on_channel(sdata, chan, channel_type,
1937                                               duration, cookie);
1938 }
1939
1940 static int ieee80211_cancel_remain_on_channel_hw(struct ieee80211_local *local,
1941                                                  u64 cookie)
1942 {
1943         int ret;
1944
1945         lockdep_assert_held(&local->mtx);
1946
1947         if (local->hw_roc_cookie != cookie)
1948                 return -ENOENT;
1949
1950         ret = drv_cancel_remain_on_channel(local);
1951         if (ret)
1952                 return ret;
1953
1954         local->hw_roc_cookie = 0;
1955         local->hw_roc_channel = NULL;
1956
1957         ieee80211_recalc_idle(local);
1958
1959         return 0;
1960 }
1961
1962 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
1963                                               struct net_device *dev,
1964                                               u64 cookie)
1965 {
1966         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1967         struct ieee80211_local *local = sdata->local;
1968
1969         if (local->ops->cancel_remain_on_channel) {
1970                 int ret;
1971
1972                 mutex_lock(&local->mtx);
1973                 ret = ieee80211_cancel_remain_on_channel_hw(local, cookie);
1974                 mutex_unlock(&local->mtx);
1975
1976                 return ret;
1977         }
1978
1979         return ieee80211_wk_cancel_remain_on_channel(sdata, cookie);
1980 }
1981
1982 static enum work_done_result
1983 ieee80211_offchan_tx_done(struct ieee80211_work *wk, struct sk_buff *skb)
1984 {
1985         /*
1986          * Use the data embedded in the work struct for reporting
1987          * here so if the driver mangled the SKB before dropping
1988          * it (which is the only way we really should get here)
1989          * then we don't report mangled data.
1990          *
1991          * If there was no wait time, then by the time we get here
1992          * the driver will likely not have reported the status yet,
1993          * so in that case userspace will have to deal with it.
1994          */
1995
1996         if (wk->offchan_tx.wait && !wk->offchan_tx.status)
1997                 cfg80211_mgmt_tx_status(wk->sdata->dev,
1998                                         (unsigned long) wk->offchan_tx.frame,
1999                                         wk->data, wk->data_len, false, GFP_KERNEL);
2000
2001         return WORK_DONE_DESTROY;
2002 }
2003
2004 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct net_device *dev,
2005                              struct ieee80211_channel *chan, bool offchan,
2006                              enum nl80211_channel_type channel_type,
2007                              bool channel_type_valid, unsigned int wait,
2008                              const u8 *buf, size_t len, bool no_cck,
2009                              bool dont_wait_for_ack, u64 *cookie)
2010 {
2011         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2012         struct ieee80211_local *local = sdata->local;
2013         struct sk_buff *skb;
2014         struct sta_info *sta;
2015         struct ieee80211_work *wk;
2016         const struct ieee80211_mgmt *mgmt = (void *)buf;
2017         u32 flags;
2018         bool is_offchan = false;
2019
2020         if (dont_wait_for_ack)
2021                 flags = IEEE80211_TX_CTL_NO_ACK;
2022         else
2023                 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
2024                         IEEE80211_TX_CTL_REQ_TX_STATUS;
2025
2026         /* Check that we are on the requested channel for transmission */
2027         if (chan != local->tmp_channel &&
2028             chan != local->oper_channel)
2029                 is_offchan = true;
2030         if (channel_type_valid &&
2031             (channel_type != local->tmp_channel_type &&
2032              channel_type != local->_oper_channel_type))
2033                 is_offchan = true;
2034
2035         if (chan == local->hw_roc_channel) {
2036                 /* TODO: check channel type? */
2037                 is_offchan = false;
2038                 flags |= IEEE80211_TX_CTL_TX_OFFCHAN;
2039         }
2040
2041         if (no_cck)
2042                 flags |= IEEE80211_TX_CTL_NO_CCK_RATE;
2043
2044         if (is_offchan && !offchan)
2045                 return -EBUSY;
2046
2047         switch (sdata->vif.type) {
2048         case NL80211_IFTYPE_ADHOC:
2049         case NL80211_IFTYPE_AP:
2050         case NL80211_IFTYPE_AP_VLAN:
2051         case NL80211_IFTYPE_P2P_GO:
2052         case NL80211_IFTYPE_MESH_POINT:
2053                 if (!ieee80211_is_action(mgmt->frame_control) ||
2054                     mgmt->u.action.category == WLAN_CATEGORY_PUBLIC)
2055                         break;
2056                 rcu_read_lock();
2057                 sta = sta_info_get(sdata, mgmt->da);
2058                 rcu_read_unlock();
2059                 if (!sta)
2060                         return -ENOLINK;
2061                 break;
2062         case NL80211_IFTYPE_STATION:
2063         case NL80211_IFTYPE_P2P_CLIENT:
2064                 break;
2065         default:
2066                 return -EOPNOTSUPP;
2067         }
2068
2069         skb = dev_alloc_skb(local->hw.extra_tx_headroom + len);
2070         if (!skb)
2071                 return -ENOMEM;
2072         skb_reserve(skb, local->hw.extra_tx_headroom);
2073
2074         memcpy(skb_put(skb, len), buf, len);
2075
2076         IEEE80211_SKB_CB(skb)->flags = flags;
2077
2078         skb->dev = sdata->dev;
2079
2080         *cookie = (unsigned long) skb;
2081
2082         if (is_offchan && local->ops->remain_on_channel) {
2083                 unsigned int duration;
2084                 int ret;
2085
2086                 mutex_lock(&local->mtx);
2087                 /*
2088                  * If the duration is zero, then the driver
2089                  * wouldn't actually do anything. Set it to
2090                  * 100 for now.
2091                  *
2092                  * TODO: cancel the off-channel operation
2093                  *       when we get the SKB's TX status and
2094                  *       the wait time was zero before.
2095                  */
2096                 duration = 100;
2097                 if (wait)
2098                         duration = wait;
2099                 ret = ieee80211_remain_on_channel_hw(local, dev, chan,
2100                                                      channel_type,
2101                                                      duration, cookie);
2102                 if (ret) {
2103                         kfree_skb(skb);
2104                         mutex_unlock(&local->mtx);
2105                         return ret;
2106                 }
2107
2108                 local->hw_roc_for_tx = true;
2109                 local->hw_roc_duration = wait;
2110
2111                 /*
2112                  * queue up frame for transmission after
2113                  * ieee80211_ready_on_channel call
2114                  */
2115
2116                 /* modify cookie to prevent API mismatches */
2117                 *cookie ^= 2;
2118                 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN;
2119                 local->hw_roc_skb = skb;
2120                 local->hw_roc_skb_for_status = skb;
2121                 mutex_unlock(&local->mtx);
2122
2123                 return 0;
2124         }
2125
2126         /*
2127          * Can transmit right away if the channel was the
2128          * right one and there's no wait involved... If a
2129          * wait is involved, we might otherwise not be on
2130          * the right channel for long enough!
2131          */
2132         if (!is_offchan && !wait && !sdata->vif.bss_conf.idle) {
2133                 ieee80211_tx_skb(sdata, skb);
2134                 return 0;
2135         }
2136
2137         wk = kzalloc(sizeof(*wk) + len, GFP_KERNEL);
2138         if (!wk) {
2139                 kfree_skb(skb);
2140                 return -ENOMEM;
2141         }
2142
2143         wk->type = IEEE80211_WORK_OFFCHANNEL_TX;
2144         wk->chan = chan;
2145         wk->chan_type = channel_type;
2146         wk->sdata = sdata;
2147         wk->done = ieee80211_offchan_tx_done;
2148         wk->offchan_tx.frame = skb;
2149         wk->offchan_tx.wait = wait;
2150         wk->data_len = len;
2151         memcpy(wk->data, buf, len);
2152
2153         ieee80211_add_work(wk);
2154         return 0;
2155 }
2156
2157 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
2158                                          struct net_device *dev,
2159                                          u64 cookie)
2160 {
2161         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2162         struct ieee80211_local *local = sdata->local;
2163         struct ieee80211_work *wk;
2164         int ret = -ENOENT;
2165
2166         mutex_lock(&local->mtx);
2167
2168         if (local->ops->cancel_remain_on_channel) {
2169                 cookie ^= 2;
2170                 ret = ieee80211_cancel_remain_on_channel_hw(local, cookie);
2171
2172                 if (ret == 0) {
2173                         kfree_skb(local->hw_roc_skb);
2174                         local->hw_roc_skb = NULL;
2175                         local->hw_roc_skb_for_status = NULL;
2176                 }
2177
2178                 mutex_unlock(&local->mtx);
2179
2180                 return ret;
2181         }
2182
2183         list_for_each_entry(wk, &local->work_list, list) {
2184                 if (wk->sdata != sdata)
2185                         continue;
2186
2187                 if (wk->type != IEEE80211_WORK_OFFCHANNEL_TX)
2188                         continue;
2189
2190                 if (cookie != (unsigned long) wk->offchan_tx.frame)
2191                         continue;
2192
2193                 wk->timeout = jiffies;
2194
2195                 ieee80211_queue_work(&local->hw, &local->work_work);
2196                 ret = 0;
2197                 break;
2198         }
2199         mutex_unlock(&local->mtx);
2200
2201         return ret;
2202 }
2203
2204 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
2205                                           struct net_device *dev,
2206                                           u16 frame_type, bool reg)
2207 {
2208         struct ieee80211_local *local = wiphy_priv(wiphy);
2209
2210         if (frame_type != (IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ))
2211                 return;
2212
2213         if (reg)
2214                 local->probe_req_reg++;
2215         else
2216                 local->probe_req_reg--;
2217
2218         ieee80211_queue_work(&local->hw, &local->reconfig_filter);
2219 }
2220
2221 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
2222 {
2223         struct ieee80211_local *local = wiphy_priv(wiphy);
2224
2225         if (local->started)
2226                 return -EOPNOTSUPP;
2227
2228         return drv_set_antenna(local, tx_ant, rx_ant);
2229 }
2230
2231 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
2232 {
2233         struct ieee80211_local *local = wiphy_priv(wiphy);
2234
2235         return drv_get_antenna(local, tx_ant, rx_ant);
2236 }
2237
2238 static int ieee80211_set_ringparam(struct wiphy *wiphy, u32 tx, u32 rx)
2239 {
2240         struct ieee80211_local *local = wiphy_priv(wiphy);
2241
2242         return drv_set_ringparam(local, tx, rx);
2243 }
2244
2245 static void ieee80211_get_ringparam(struct wiphy *wiphy,
2246                                     u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max)
2247 {
2248         struct ieee80211_local *local = wiphy_priv(wiphy);
2249
2250         drv_get_ringparam(local, tx, tx_max, rx, rx_max);
2251 }
2252
2253 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
2254                                     struct net_device *dev,
2255                                     struct cfg80211_gtk_rekey_data *data)
2256 {
2257         struct ieee80211_local *local = wiphy_priv(wiphy);
2258         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2259
2260         if (!local->ops->set_rekey_data)
2261                 return -EOPNOTSUPP;
2262
2263         drv_set_rekey_data(local, sdata, data);
2264
2265         return 0;
2266 }
2267
2268 static void ieee80211_tdls_add_ext_capab(struct sk_buff *skb)
2269 {
2270         u8 *pos = (void *)skb_put(skb, 7);
2271
2272         *pos++ = WLAN_EID_EXT_CAPABILITY;
2273         *pos++ = 5; /* len */
2274         *pos++ = 0x0;
2275         *pos++ = 0x0;
2276         *pos++ = 0x0;
2277         *pos++ = 0x0;
2278         *pos++ = WLAN_EXT_CAPA5_TDLS_ENABLED;
2279 }
2280
2281 static u16 ieee80211_get_tdls_sta_capab(struct ieee80211_sub_if_data *sdata)
2282 {
2283         struct ieee80211_local *local = sdata->local;
2284         u16 capab;
2285
2286         capab = 0;
2287         if (local->oper_channel->band != IEEE80211_BAND_2GHZ)
2288                 return capab;
2289
2290         if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE))
2291                 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
2292         if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE))
2293                 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
2294
2295         return capab;
2296 }
2297
2298 static void ieee80211_tdls_add_link_ie(struct sk_buff *skb, u8 *src_addr,
2299                                        u8 *peer, u8 *bssid)
2300 {
2301         struct ieee80211_tdls_lnkie *lnkid;
2302
2303         lnkid = (void *)skb_put(skb, sizeof(struct ieee80211_tdls_lnkie));
2304
2305         lnkid->ie_type = WLAN_EID_LINK_ID;
2306         lnkid->ie_len = sizeof(struct ieee80211_tdls_lnkie) - 2;
2307
2308         memcpy(lnkid->bssid, bssid, ETH_ALEN);
2309         memcpy(lnkid->init_sta, src_addr, ETH_ALEN);
2310         memcpy(lnkid->resp_sta, peer, ETH_ALEN);
2311 }
2312
2313 static int
2314 ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev,
2315                                u8 *peer, u8 action_code, u8 dialog_token,
2316                                u16 status_code, struct sk_buff *skb)
2317 {
2318         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2319         struct ieee80211_tdls_data *tf;
2320
2321         tf = (void *)skb_put(skb, offsetof(struct ieee80211_tdls_data, u));
2322
2323         memcpy(tf->da, peer, ETH_ALEN);
2324         memcpy(tf->sa, sdata->vif.addr, ETH_ALEN);
2325         tf->ether_type = cpu_to_be16(ETH_P_TDLS);
2326         tf->payload_type = WLAN_TDLS_SNAP_RFTYPE;
2327
2328         switch (action_code) {
2329         case WLAN_TDLS_SETUP_REQUEST:
2330                 tf->category = WLAN_CATEGORY_TDLS;
2331                 tf->action_code = WLAN_TDLS_SETUP_REQUEST;
2332
2333                 skb_put(skb, sizeof(tf->u.setup_req));
2334                 tf->u.setup_req.dialog_token = dialog_token;
2335                 tf->u.setup_req.capability =
2336                         cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2337
2338                 ieee80211_add_srates_ie(&sdata->vif, skb);
2339                 ieee80211_add_ext_srates_ie(&sdata->vif, skb);
2340                 ieee80211_tdls_add_ext_capab(skb);
2341                 break;
2342         case WLAN_TDLS_SETUP_RESPONSE:
2343                 tf->category = WLAN_CATEGORY_TDLS;
2344                 tf->action_code = WLAN_TDLS_SETUP_RESPONSE;
2345
2346                 skb_put(skb, sizeof(tf->u.setup_resp));
2347                 tf->u.setup_resp.status_code = cpu_to_le16(status_code);
2348                 tf->u.setup_resp.dialog_token = dialog_token;
2349                 tf->u.setup_resp.capability =
2350                         cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2351
2352                 ieee80211_add_srates_ie(&sdata->vif, skb);
2353                 ieee80211_add_ext_srates_ie(&sdata->vif, skb);
2354                 ieee80211_tdls_add_ext_capab(skb);
2355                 break;
2356         case WLAN_TDLS_SETUP_CONFIRM:
2357                 tf->category = WLAN_CATEGORY_TDLS;
2358                 tf->action_code = WLAN_TDLS_SETUP_CONFIRM;
2359
2360                 skb_put(skb, sizeof(tf->u.setup_cfm));
2361                 tf->u.setup_cfm.status_code = cpu_to_le16(status_code);
2362                 tf->u.setup_cfm.dialog_token = dialog_token;
2363                 break;
2364         case WLAN_TDLS_TEARDOWN:
2365                 tf->category = WLAN_CATEGORY_TDLS;
2366                 tf->action_code = WLAN_TDLS_TEARDOWN;
2367
2368                 skb_put(skb, sizeof(tf->u.teardown));
2369                 tf->u.teardown.reason_code = cpu_to_le16(status_code);
2370                 break;
2371         case WLAN_TDLS_DISCOVERY_REQUEST:
2372                 tf->category = WLAN_CATEGORY_TDLS;
2373                 tf->action_code = WLAN_TDLS_DISCOVERY_REQUEST;
2374
2375                 skb_put(skb, sizeof(tf->u.discover_req));
2376                 tf->u.discover_req.dialog_token = dialog_token;
2377                 break;
2378         default:
2379                 return -EINVAL;
2380         }
2381
2382         return 0;
2383 }
2384
2385 static int
2386 ieee80211_prep_tdls_direct(struct wiphy *wiphy, struct net_device *dev,
2387                            u8 *peer, u8 action_code, u8 dialog_token,
2388                            u16 status_code, struct sk_buff *skb)
2389 {
2390         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2391         struct ieee80211_mgmt *mgmt;
2392
2393         mgmt = (void *)skb_put(skb, 24);
2394         memset(mgmt, 0, 24);
2395         memcpy(mgmt->da, peer, ETH_ALEN);
2396         memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
2397         memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN);
2398
2399         mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
2400                                           IEEE80211_STYPE_ACTION);
2401
2402         switch (action_code) {
2403         case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2404                 skb_put(skb, 1 + sizeof(mgmt->u.action.u.tdls_discover_resp));
2405                 mgmt->u.action.category = WLAN_CATEGORY_PUBLIC;
2406                 mgmt->u.action.u.tdls_discover_resp.action_code =
2407                         WLAN_PUB_ACTION_TDLS_DISCOVER_RES;
2408                 mgmt->u.action.u.tdls_discover_resp.dialog_token =
2409                         dialog_token;
2410                 mgmt->u.action.u.tdls_discover_resp.capability =
2411                         cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2412
2413                 ieee80211_add_srates_ie(&sdata->vif, skb);
2414                 ieee80211_add_ext_srates_ie(&sdata->vif, skb);
2415                 ieee80211_tdls_add_ext_capab(skb);
2416                 break;
2417         default:
2418                 return -EINVAL;
2419         }
2420
2421         return 0;
2422 }
2423
2424 static int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
2425                                u8 *peer, u8 action_code, u8 dialog_token,
2426                                u16 status_code, const u8 *extra_ies,
2427                                size_t extra_ies_len)
2428 {
2429         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2430         struct ieee80211_local *local = sdata->local;
2431         struct ieee80211_tx_info *info;
2432         struct sk_buff *skb = NULL;
2433         bool send_direct;
2434         int ret;
2435
2436         if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
2437                 return -ENOTSUPP;
2438
2439         /* make sure we are in managed mode, and associated */
2440         if (sdata->vif.type != NL80211_IFTYPE_STATION ||
2441             !sdata->u.mgd.associated)
2442                 return -EINVAL;
2443
2444 #ifdef CONFIG_MAC80211_VERBOSE_TDLS_DEBUG
2445         printk(KERN_DEBUG "TDLS mgmt action %d peer %pM\n", action_code, peer);
2446 #endif
2447
2448         skb = dev_alloc_skb(local->hw.extra_tx_headroom +
2449                             max(sizeof(struct ieee80211_mgmt),
2450                                 sizeof(struct ieee80211_tdls_data)) +
2451                             50 + /* supported rates */
2452                             7 + /* ext capab */
2453                             extra_ies_len +
2454                             sizeof(struct ieee80211_tdls_lnkie));
2455         if (!skb)
2456                 return -ENOMEM;
2457
2458         info = IEEE80211_SKB_CB(skb);
2459         skb_reserve(skb, local->hw.extra_tx_headroom);
2460
2461         switch (action_code) {
2462         case WLAN_TDLS_SETUP_REQUEST:
2463         case WLAN_TDLS_SETUP_RESPONSE:
2464         case WLAN_TDLS_SETUP_CONFIRM:
2465         case WLAN_TDLS_TEARDOWN:
2466         case WLAN_TDLS_DISCOVERY_REQUEST:
2467                 ret = ieee80211_prep_tdls_encap_data(wiphy, dev, peer,
2468                                                      action_code, dialog_token,
2469                                                      status_code, skb);
2470                 send_direct = false;
2471                 break;
2472         case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2473                 ret = ieee80211_prep_tdls_direct(wiphy, dev, peer, action_code,
2474                                                  dialog_token, status_code,
2475                                                  skb);
2476                 send_direct = true;
2477                 break;
2478         default:
2479                 ret = -ENOTSUPP;
2480                 break;
2481         }
2482
2483         if (ret < 0)
2484                 goto fail;
2485
2486         if (extra_ies_len)
2487                 memcpy(skb_put(skb, extra_ies_len), extra_ies, extra_ies_len);
2488
2489         /* the TDLS link IE is always added last */
2490         switch (action_code) {
2491         case WLAN_TDLS_SETUP_REQUEST:
2492         case WLAN_TDLS_SETUP_CONFIRM:
2493         case WLAN_TDLS_TEARDOWN:
2494         case WLAN_TDLS_DISCOVERY_REQUEST:
2495                 /* we are the initiator */
2496                 ieee80211_tdls_add_link_ie(skb, sdata->vif.addr, peer,
2497                                            sdata->u.mgd.bssid);
2498                 break;
2499         case WLAN_TDLS_SETUP_RESPONSE:
2500         case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2501                 /* we are the responder */
2502                 ieee80211_tdls_add_link_ie(skb, peer, sdata->vif.addr,
2503                                            sdata->u.mgd.bssid);
2504                 break;
2505         default:
2506                 ret = -ENOTSUPP;
2507                 goto fail;
2508         }
2509
2510         if (send_direct) {
2511                 ieee80211_tx_skb(sdata, skb);
2512                 return 0;
2513         }
2514
2515         /*
2516          * According to 802.11z: Setup req/resp are sent in AC_BK, otherwise
2517          * we should default to AC_VI.
2518          */
2519         switch (action_code) {
2520         case WLAN_TDLS_SETUP_REQUEST:
2521         case WLAN_TDLS_SETUP_RESPONSE:
2522                 skb_set_queue_mapping(skb, IEEE80211_AC_BK);
2523                 skb->priority = 2;
2524                 break;
2525         default:
2526                 skb_set_queue_mapping(skb, IEEE80211_AC_VI);
2527                 skb->priority = 5;
2528                 break;
2529         }
2530
2531         /* disable bottom halves when entering the Tx path */
2532         local_bh_disable();
2533         ret = ieee80211_subif_start_xmit(skb, dev);
2534         local_bh_enable();
2535
2536         return ret;
2537
2538 fail:
2539         dev_kfree_skb(skb);
2540         return ret;
2541 }
2542
2543 static int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
2544                                u8 *peer, enum nl80211_tdls_operation oper)
2545 {
2546         struct sta_info *sta;
2547         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2548
2549         if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
2550                 return -ENOTSUPP;
2551
2552         if (sdata->vif.type != NL80211_IFTYPE_STATION)
2553                 return -EINVAL;
2554
2555 #ifdef CONFIG_MAC80211_VERBOSE_TDLS_DEBUG
2556         printk(KERN_DEBUG "TDLS oper %d peer %pM\n", oper, peer);
2557 #endif
2558
2559         switch (oper) {
2560         case NL80211_TDLS_ENABLE_LINK:
2561                 rcu_read_lock();
2562                 sta = sta_info_get(sdata, peer);
2563                 if (!sta) {
2564                         rcu_read_unlock();
2565                         return -ENOLINK;
2566                 }
2567
2568                 set_sta_flag(sta, WLAN_STA_TDLS_PEER_AUTH);
2569                 rcu_read_unlock();
2570                 break;
2571         case NL80211_TDLS_DISABLE_LINK:
2572                 return sta_info_destroy_addr(sdata, peer);
2573         case NL80211_TDLS_TEARDOWN:
2574         case NL80211_TDLS_SETUP:
2575         case NL80211_TDLS_DISCOVERY_REQ:
2576                 /* We don't support in-driver setup/teardown/discovery */
2577                 return -ENOTSUPP;
2578         default:
2579                 return -ENOTSUPP;
2580         }
2581
2582         return 0;
2583 }
2584
2585 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
2586                                   const u8 *peer, u64 *cookie)
2587 {
2588         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2589         struct ieee80211_local *local = sdata->local;
2590         struct ieee80211_qos_hdr *nullfunc;
2591         struct sk_buff *skb;
2592         int size = sizeof(*nullfunc);
2593         __le16 fc;
2594         bool qos;
2595         struct ieee80211_tx_info *info;
2596         struct sta_info *sta;
2597
2598         rcu_read_lock();
2599         sta = sta_info_get(sdata, peer);
2600         if (sta) {
2601                 qos = test_sta_flag(sta, WLAN_STA_WME);
2602                 rcu_read_unlock();
2603         } else {
2604                 rcu_read_unlock();
2605                 return -ENOLINK;
2606         }
2607
2608         if (qos) {
2609                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
2610                                  IEEE80211_STYPE_QOS_NULLFUNC |
2611                                  IEEE80211_FCTL_FROMDS);
2612         } else {
2613                 size -= 2;
2614                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
2615                                  IEEE80211_STYPE_NULLFUNC |
2616                                  IEEE80211_FCTL_FROMDS);
2617         }
2618
2619         skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
2620         if (!skb)
2621                 return -ENOMEM;
2622
2623         skb->dev = dev;
2624
2625         skb_reserve(skb, local->hw.extra_tx_headroom);
2626
2627         nullfunc = (void *) skb_put(skb, size);
2628         nullfunc->frame_control = fc;
2629         nullfunc->duration_id = 0;
2630         memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
2631         memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
2632         memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
2633         nullfunc->seq_ctrl = 0;
2634
2635         info = IEEE80211_SKB_CB(skb);
2636
2637         info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
2638                        IEEE80211_TX_INTFL_NL80211_FRAME_TX;
2639
2640         skb_set_queue_mapping(skb, IEEE80211_AC_VO);
2641         skb->priority = 7;
2642         if (qos)
2643                 nullfunc->qos_ctrl = cpu_to_le16(7);
2644
2645         local_bh_disable();
2646         ieee80211_xmit(sdata, skb);
2647         local_bh_enable();
2648
2649         *cookie = (unsigned long) skb;
2650         return 0;
2651 }
2652
2653 static struct ieee80211_channel *
2654 ieee80211_wiphy_get_channel(struct wiphy *wiphy)
2655 {
2656         struct ieee80211_local *local = wiphy_priv(wiphy);
2657
2658         return local->oper_channel;
2659 }
2660
2661 struct cfg80211_ops mac80211_config_ops = {
2662         .add_virtual_intf = ieee80211_add_iface,
2663         .del_virtual_intf = ieee80211_del_iface,
2664         .change_virtual_intf = ieee80211_change_iface,
2665         .add_key = ieee80211_add_key,
2666         .del_key = ieee80211_del_key,
2667         .get_key = ieee80211_get_key,
2668         .set_default_key = ieee80211_config_default_key,
2669         .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
2670         .start_ap = ieee80211_start_ap,
2671         .change_beacon = ieee80211_change_beacon,
2672         .stop_ap = ieee80211_stop_ap,
2673         .add_station = ieee80211_add_station,
2674         .del_station = ieee80211_del_station,
2675         .change_station = ieee80211_change_station,
2676         .get_station = ieee80211_get_station,
2677         .dump_station = ieee80211_dump_station,
2678         .dump_survey = ieee80211_dump_survey,
2679 #ifdef CONFIG_MAC80211_MESH
2680         .add_mpath = ieee80211_add_mpath,
2681         .del_mpath = ieee80211_del_mpath,
2682         .change_mpath = ieee80211_change_mpath,
2683         .get_mpath = ieee80211_get_mpath,
2684         .dump_mpath = ieee80211_dump_mpath,
2685         .update_mesh_config = ieee80211_update_mesh_config,
2686         .get_mesh_config = ieee80211_get_mesh_config,
2687         .join_mesh = ieee80211_join_mesh,
2688         .leave_mesh = ieee80211_leave_mesh,
2689 #endif
2690         .change_bss = ieee80211_change_bss,
2691         .set_txq_params = ieee80211_set_txq_params,
2692         .set_channel = ieee80211_set_channel,
2693         .suspend = ieee80211_suspend,
2694         .resume = ieee80211_resume,
2695         .scan = ieee80211_scan,
2696         .sched_scan_start = ieee80211_sched_scan_start,
2697         .sched_scan_stop = ieee80211_sched_scan_stop,
2698         .auth = ieee80211_auth,
2699         .assoc = ieee80211_assoc,
2700         .deauth = ieee80211_deauth,
2701         .disassoc = ieee80211_disassoc,
2702         .join_ibss = ieee80211_join_ibss,
2703         .leave_ibss = ieee80211_leave_ibss,
2704         .set_wiphy_params = ieee80211_set_wiphy_params,
2705         .set_tx_power = ieee80211_set_tx_power,
2706         .get_tx_power = ieee80211_get_tx_power,
2707         .set_wds_peer = ieee80211_set_wds_peer,
2708         .rfkill_poll = ieee80211_rfkill_poll,
2709         CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
2710         CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
2711         .set_power_mgmt = ieee80211_set_power_mgmt,
2712         .set_bitrate_mask = ieee80211_set_bitrate_mask,
2713         .remain_on_channel = ieee80211_remain_on_channel,
2714         .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
2715         .mgmt_tx = ieee80211_mgmt_tx,
2716         .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
2717         .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
2718         .mgmt_frame_register = ieee80211_mgmt_frame_register,
2719         .set_antenna = ieee80211_set_antenna,
2720         .get_antenna = ieee80211_get_antenna,
2721         .set_ringparam = ieee80211_set_ringparam,
2722         .get_ringparam = ieee80211_get_ringparam,
2723         .set_rekey_data = ieee80211_set_rekey_data,
2724         .tdls_oper = ieee80211_tdls_oper,
2725         .tdls_mgmt = ieee80211_tdls_mgmt,
2726         .probe_client = ieee80211_probe_client,
2727         .get_channel = ieee80211_wiphy_get_channel,
2728         .set_noack_map = ieee80211_set_noack_map,
2729 };