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
 360         do_posix_clock_monotonic_gettime(&uptime);
 361         sinfo->connected_time = uptime.tv_sec - sta->last_connected;
 362
 363         sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx);
 364         sinfo->rx_bytes = sta->rx_bytes;
 365         sinfo->tx_bytes = sta->tx_bytes;
 366         sinfo->rx_packets = sta->rx_packets;
 367         sinfo->tx_packets = sta->tx_packets;
 368         sinfo->tx_retries = sta->tx_retry_count;
 369         sinfo->tx_failed = sta->tx_retry_failed;
 370         sinfo->rx_dropped_misc = sta->rx_dropped;
 371
 372         if ((sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) ||
 373             (sta->local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)) {
 374                 sinfo->filled |= STATION_INFO_SIGNAL | STATION_INFO_SIGNAL_AVG;
 375                 sinfo->signal = (s8)sta->last_signal;
 376                 sinfo->signal_avg = (s8) -ewma_read(&sta->avg_signal);
 377         }
 378
 379         sinfo->txrate.flags = 0;
 380         if (sta->last_tx_rate.flags & IEEE80211_TX_RC_MCS)
 381                 sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS;
 382         if (sta->last_tx_rate.flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 383                 sinfo->txrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 384         if (sta->last_tx_rate.flags & IEEE80211_TX_RC_SHORT_GI)
 385                 sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
 386         rate_idx_to_bitrate(&sinfo->txrate, sta, sta->last_tx_rate.idx);
 387
 388         sinfo->rxrate.flags = 0;
 389         if (sta->last_rx_rate_flag & RX_FLAG_HT)
 390                 sinfo->rxrate.flags |= RATE_INFO_FLAGS_MCS;
 391         if (sta->last_rx_rate_flag & RX_FLAG_40MHZ)
 392                 sinfo->rxrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 393         if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI)
 394                 sinfo->rxrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
 395         rate_idx_to_bitrate(&sinfo->rxrate, sta, sta->last_rx_rate_idx);
 396
 397         if (ieee80211_vif_is_mesh(&sdata->vif)) {
 398 #ifdef CONFIG_MAC80211_MESH
 399                 sinfo->filled |= STATION_INFO_LLID |
 400                                  STATION_INFO_PLID |
 401                                  STATION_INFO_PLINK_STATE;
 402
 403                 sinfo->llid = le16_to_cpu(sta->llid);
 404                 sinfo->plid = le16_to_cpu(sta->plid);
 405                 sinfo->plink_state = sta->plink_state;
 406 #endif
 407         }
 408
 409         sinfo->bss_param.flags = 0;
 410         if (sdata->vif.bss_conf.use_cts_prot)
 411                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_CTS_PROT;
 412         if (sdata->vif.bss_conf.use_short_preamble)
 413                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_PREAMBLE;
 414         if (sdata->vif.bss_conf.use_short_slot)
 415                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME;
 416         sinfo->bss_param.dtim_period = sdata->local->hw.conf.ps_dtim_period;
 417         sinfo->bss_param.beacon_interval = sdata->vif.bss_conf.beacon_int;
 418
 419         sinfo->sta_flags.set = 0;
 420         sinfo->sta_flags.mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
 421                                 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
 422                                 BIT(NL80211_STA_FLAG_WME) |
 423                                 BIT(NL80211_STA_FLAG_MFP) |
 424                                 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
 425                                 BIT(NL80211_STA_FLAG_TDLS_PEER);
 426         if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
 427                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHORIZED);
 428         if (test_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE))
 429                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
 430         if (test_sta_flag(sta, WLAN_STA_WME))
 431                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_WME);
 432         if (test_sta_flag(sta, WLAN_STA_MFP))
 433                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_MFP);
 434         if (test_sta_flag(sta, WLAN_STA_AUTH))
 435                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHENTICATED);
 436         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER))
 437                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_TDLS_PEER);
 438 }
 439
 440
 441 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
 442                                  int idx, u8 *mac, struct station_info *sinfo)
 443 {
 444         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 445         struct sta_info *sta;
 446         int ret = -ENOENT;
 447
 448         rcu_read_lock();
 449
 450         sta = sta_info_get_by_idx(sdata, idx);
 451         if (sta) {
 452                 ret = 0;
 453                 memcpy(mac, sta->sta.addr, ETH_ALEN);
 454                 sta_set_sinfo(sta, sinfo);
 455         }
 456
 457         rcu_read_unlock();
 458
 459         return ret;
 460 }
 461
 462 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
 463                                  int idx, struct survey_info *survey)
 464 {
 465         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 466
 467         return drv_get_survey(local, idx, survey);
 468 }
 469
 470 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 471                                  u8 *mac, struct station_info *sinfo)
 472 {
 473         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 474         struct sta_info *sta;
 475         int ret = -ENOENT;
 476
 477         rcu_read_lock();
 478
 479         sta = sta_info_get_bss(sdata, mac);
 480         if (sta) {
 481                 ret = 0;
 482                 sta_set_sinfo(sta, sinfo);
 483         }
 484
 485         rcu_read_unlock();
 486
 487         return ret;
 488 }
 489
 490 static void ieee80211_config_ap_ssid(struct ieee80211_sub_if_data *sdata,
 491                                      struct beacon_parameters *params)
 492 {
 493         struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
 494
 495         bss_conf->ssid_len = params->ssid_len;
 496
 497         if (params->ssid_len)
 498                 memcpy(bss_conf->ssid, params->ssid, params->ssid_len);
 499
 500         bss_conf->hidden_ssid =
 501                 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
 502 }
 503
 504 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
 505                                     u8 *resp, size_t resp_len)
 506 {
 507         struct sk_buff *new, *old;
 508
 509         if (!resp || !resp_len)
 510                 return -EINVAL;
 511
 512         old = rtnl_dereference(sdata->u.ap.probe_resp);
 513
 514         new = dev_alloc_skb(resp_len);
 515         if (!new)
 516                 return -ENOMEM;
 517
 518         memcpy(skb_put(new, resp_len), resp, resp_len);
 519
 520         rcu_assign_pointer(sdata->u.ap.probe_resp, new);
 521         synchronize_rcu();
 522
 523         if (old)
 524                 dev_kfree_skb(old);
 525
 526         return 0;
 527 }
 528
 529 /*
 530  * This handles both adding a beacon and setting new beacon info
 531  */
 532 static int ieee80211_config_beacon(struct ieee80211_sub_if_data *sdata,
 533                                    struct beacon_parameters *params)
 534 {
 535         struct beacon_data *new, *old;
 536         int new_head_len, new_tail_len;
 537         int size;
 538         int err = -EINVAL;
 539         u32 changed = 0;
 540
 541         old = rtnl_dereference(sdata->u.ap.beacon);
 542
 543         /* head must not be zero-length */
 544         if (params->head && !params->head_len)
 545                 return -EINVAL;
 546
 547         /*
 548          * This is a kludge. beacon interval should really be part
 549          * of the beacon information.
 550          */
 551         if (params->interval &&
 552             (sdata->vif.bss_conf.beacon_int != params->interval)) {
 553                 sdata->vif.bss_conf.beacon_int = params->interval;
 554                 ieee80211_bss_info_change_notify(sdata,
 555                                                  BSS_CHANGED_BEACON_INT);
 556         }
 557
 558         /* Need to have a beacon head if we don't have one yet */
 559         if (!params->head && !old)
 560                 return err;
 561
 562         /* sorry, no way to start beaconing without dtim period */
 563         if (!params->dtim_period && !old)
 564                 return err;
 565
 566         /* new or old head? */
 567         if (params->head)
 568                 new_head_len = params->head_len;
 569         else
 570                 new_head_len = old->head_len;
 571
 572         /* new or old tail? */
 573         if (params->tail || !old)
 574                 /* params->tail_len will be zero for !params->tail */
 575                 new_tail_len = params->tail_len;
 576         else
 577                 new_tail_len = old->tail_len;
 578
 579         size = sizeof(*new) + new_head_len + new_tail_len;
 580
 581         new = kzalloc(size, GFP_KERNEL);
 582         if (!new)
 583                 return -ENOMEM;
 584
 585         /* start filling the new info now */
 586
 587         /* new or old dtim period? */
 588         if (params->dtim_period)
 589                 new->dtim_period = params->dtim_period;
 590         else
 591                 new->dtim_period = old->dtim_period;
 592
 593         /*
 594          * pointers go into the block we allocated,
 595          * memory is | beacon_data | head | tail |
 596          */
 597         new->head = ((u8 *) new) + sizeof(*new);
 598         new->tail = new->head + new_head_len;
 599         new->head_len = new_head_len;
 600         new->tail_len = new_tail_len;
 601
 602         /* copy in head */
 603         if (params->head)
 604                 memcpy(new->head, params->head, new_head_len);
 605         else
 606                 memcpy(new->head, old->head, new_head_len);
 607
 608         /* copy in optional tail */
 609         if (params->tail)
 610                 memcpy(new->tail, params->tail, new_tail_len);
 611         else
 612                 if (old)
 613                         memcpy(new->tail, old->tail, new_tail_len);
 614
 615         sdata->vif.bss_conf.dtim_period = new->dtim_period;
 616
 617         RCU_INIT_POINTER(sdata->u.ap.beacon, new);
 618
 619         synchronize_rcu();
 620
 621         kfree(old);
 622
 623         err = ieee80211_set_probe_resp(sdata, params->probe_resp,
 624                                        params->probe_resp_len);
 625         if (!err)
 626                 changed |= BSS_CHANGED_AP_PROBE_RESP;
 627
 628         ieee80211_config_ap_ssid(sdata, params);
 629         changed |= BSS_CHANGED_BEACON_ENABLED |
 630                    BSS_CHANGED_BEACON |
 631                    BSS_CHANGED_SSID;
 632
 633         ieee80211_bss_info_change_notify(sdata, changed);
 634         return 0;
 635 }
 636
 637 static int ieee80211_add_beacon(struct wiphy *wiphy, struct net_device *dev,
 638                                 struct beacon_parameters *params)
 639 {
 640         struct ieee80211_sub_if_data *sdata;
 641         struct beacon_data *old;
 642         struct ieee80211_sub_if_data *vlan;
 643         int ret;
 644
 645         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 646
 647         old = rtnl_dereference(sdata->u.ap.beacon);
 648         if (old)
 649                 return -EALREADY;
 650
 651         ret = ieee80211_config_beacon(sdata, params);
 652         if (ret)
 653                 return ret;
 654
 655         /*
 656          * Apply control port protocol, this allows us to
 657          * not encrypt dynamic WEP control frames.
 658          */
 659         sdata->control_port_protocol = params->crypto.control_port_ethertype;
 660         sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
 661         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
 662                 vlan->control_port_protocol =
 663                         params->crypto.control_port_ethertype;
 664                 vlan->control_port_no_encrypt =
 665                         params->crypto.control_port_no_encrypt;
 666         }
 667
 668         return 0;
 669 }
 670
 671 static int ieee80211_set_beacon(struct wiphy *wiphy, struct net_device *dev,
 672                                 struct beacon_parameters *params)
 673 {
 674         struct ieee80211_sub_if_data *sdata;
 675         struct beacon_data *old;
 676
 677         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 678
 679         old = rtnl_dereference(sdata->u.ap.beacon);
 680         if (!old)
 681                 return -ENOENT;
 682
 683         return ieee80211_config_beacon(sdata, params);
 684 }
 685
 686 static int ieee80211_del_beacon(struct wiphy *wiphy, struct net_device *dev)
 687 {
 688         struct ieee80211_sub_if_data *sdata;
 689         struct beacon_data *old;
 690
 691         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 692
 693         old = rtnl_dereference(sdata->u.ap.beacon);
 694         if (!old)
 695                 return -ENOENT;
 696
 697         RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
 698         synchronize_rcu();
 699         kfree(old);
 700
 701         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
 702         return 0;
 703 }
 704
 705 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
 706 struct iapp_layer2_update {
 707         u8 da[ETH_ALEN];        /* broadcast */
 708         u8 sa[ETH_ALEN];        /* STA addr */
 709         __be16 len;             /* 6 */
 710         u8 dsap;                /* 0 */
 711         u8 ssap;                /* 0 */
 712         u8 control;
 713         u8 xid_info[3];
 714 } __packed;
 715
 716 static void ieee80211_send_layer2_update(struct sta_info *sta)
 717 {
 718         struct iapp_layer2_update *msg;
 719         struct sk_buff *skb;
 720
 721         /* Send Level 2 Update Frame to update forwarding tables in layer 2
 722          * bridge devices */
 723
 724         skb = dev_alloc_skb(sizeof(*msg));
 725         if (!skb)
 726                 return;
 727         msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
 728
 729         /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
 730          * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
 731
 732         memset(msg->da, 0xff, ETH_ALEN);
 733         memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
 734         msg->len = htons(6);
 735         msg->dsap = 0;
 736         msg->ssap = 0x01;       /* NULL LSAP, CR Bit: Response */
 737         msg->control = 0xaf;    /* XID response lsb.1111F101.
 738                                  * F=0 (no poll command; unsolicited frame) */
 739         msg->xid_info[0] = 0x81;        /* XID format identifier */
 740         msg->xid_info[1] = 1;   /* LLC types/classes: Type 1 LLC */
 741         msg->xid_info[2] = 0;   /* XID sender's receive window size (RW) */
 742
 743         skb->dev = sta->sdata->dev;
 744         skb->protocol = eth_type_trans(skb, sta->sdata->dev);
 745         memset(skb->cb, 0, sizeof(skb->cb));
 746         netif_rx_ni(skb);
 747 }
 748
 749 static int sta_apply_parameters(struct ieee80211_local *local,
 750                                 struct sta_info *sta,
 751                                 struct station_parameters *params)
 752 {
 753         int ret = 0;
 754         u32 rates;
 755         int i, j;
 756         struct ieee80211_supported_band *sband;
 757         struct ieee80211_sub_if_data *sdata = sta->sdata;
 758         u32 mask, set;
 759
 760         sband = local->hw.wiphy->bands[local->oper_channel->band];
 761
 762         mask = params->sta_flags_mask;
 763         set = params->sta_flags_set;
 764
 765         /*
 766          * In mesh mode, we can clear AUTHENTICATED flag but must
 767          * also make ASSOCIATED follow appropriately for the driver
 768          * API. See also below, after AUTHORIZED changes.
 769          */
 770         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) {
 771                 /* cfg80211 should not allow this in non-mesh modes */
 772                 if (WARN_ON(!ieee80211_vif_is_mesh(&sdata->vif)))
 773                         return -EINVAL;
 774
 775                 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
 776                     !test_sta_flag(sta, WLAN_STA_AUTH)) {
 777                         ret = sta_info_move_state_checked(sta,
 778                                         IEEE80211_STA_AUTH);
 779                         if (ret)
 780                                 return ret;
 781                         ret = sta_info_move_state_checked(sta,
 782                                         IEEE80211_STA_ASSOC);
 783                         if (ret)
 784                                 return ret;
 785                 }
 786         }
 787
 788         if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
 789                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
 790                         ret = sta_info_move_state_checked(sta,
 791                                         IEEE80211_STA_AUTHORIZED);
 792                 else
 793                         ret = sta_info_move_state_checked(sta,
 794                                         IEEE80211_STA_ASSOC);
 795                 if (ret)
 796                         return ret;
 797         }
 798
 799         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) {
 800                 /* cfg80211 should not allow this in non-mesh modes */
 801                 if (WARN_ON(!ieee80211_vif_is_mesh(&sdata->vif)))
 802                         return -EINVAL;
 803
 804                 if (!(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
 805                     test_sta_flag(sta, WLAN_STA_AUTH)) {
 806                         ret = sta_info_move_state_checked(sta,
 807                                         IEEE80211_STA_AUTH);
 808                         if (ret)
 809                                 return ret;
 810                         ret = sta_info_move_state_checked(sta,
 811                                         IEEE80211_STA_NONE);
 812                         if (ret)
 813                                 return ret;
 814                 }
 815         }
 816
 817
 818         if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
 819                 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
 820                         set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
 821                 else
 822                         clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
 823         }
 824
 825         if (mask & BIT(NL80211_STA_FLAG_WME)) {
 826                 if (set & BIT(NL80211_STA_FLAG_WME)) {
 827                         set_sta_flag(sta, WLAN_STA_WME);
 828                         sta->sta.wme = true;
 829                 } else {
 830                         clear_sta_flag(sta, WLAN_STA_WME);
 831                         sta->sta.wme = false;
 832                 }
 833         }
 834
 835         if (mask & BIT(NL80211_STA_FLAG_MFP)) {
 836                 if (set & BIT(NL80211_STA_FLAG_MFP))
 837                         set_sta_flag(sta, WLAN_STA_MFP);
 838                 else
 839                         clear_sta_flag(sta, WLAN_STA_MFP);
 840         }
 841
 842         if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
 843                 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
 844                         set_sta_flag(sta, WLAN_STA_TDLS_PEER);
 845                 else
 846                         clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
 847         }
 848
 849         if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
 850                 sta->sta.uapsd_queues = params->uapsd_queues;
 851                 sta->sta.max_sp = params->max_sp;
 852         }
 853
 854         /*
 855          * cfg80211 validates this (1-2007) and allows setting the AID
 856          * only when creating a new station entry
 857          */
 858         if (params->aid)
 859                 sta->sta.aid = params->aid;
 860
 861         /*
 862          * FIXME: updating the following information is racy when this
 863          *        function is called from ieee80211_change_station().
 864          *        However, all this information should be static so
 865          *        maybe we should just reject attemps to change it.
 866          */
 867
 868         if (params->listen_interval >= 0)
 869                 sta->listen_interval = params->listen_interval;
 870
 871         if (params->supported_rates) {
 872                 rates = 0;
 873
 874                 for (i = 0; i < params->supported_rates_len; i++) {
 875                         int rate = (params->supported_rates[i] & 0x7f) * 5;
 876                         for (j = 0; j < sband->n_bitrates; j++) {
 877                                 if (sband->bitrates[j].bitrate == rate)
 878                                         rates |= BIT(j);
 879                         }
 880                 }
 881                 sta->sta.supp_rates[local->oper_channel->band] = rates;
 882         }
 883
 884         if (params->ht_capa)
 885                 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
 886                                                   params->ht_capa,
 887                                                   &sta->sta.ht_cap);
 888
 889         if (ieee80211_vif_is_mesh(&sdata->vif)) {
 890 #ifdef CONFIG_MAC80211_MESH
 891                 if (sdata->u.mesh.security & IEEE80211_MESH_SEC_SECURED)
 892                         switch (params->plink_state) {
 893                         case NL80211_PLINK_LISTEN:
 894                         case NL80211_PLINK_ESTAB:
 895                         case NL80211_PLINK_BLOCKED:
 896                                 sta->plink_state = params->plink_state;
 897                                 break;
 898                         default:
 899                                 /*  nothing  */
 900                                 break;
 901                         }
 902                 else
 903                         switch (params->plink_action) {
 904                         case PLINK_ACTION_OPEN:
 905                                 mesh_plink_open(sta);
 906                                 break;
 907                         case PLINK_ACTION_BLOCK:
 908                                 mesh_plink_block(sta);
 909                                 break;
 910                         }
 911 #endif
 912         }
 913
 914         return 0;
 915 }
 916
 917 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
 918                                  u8 *mac, struct station_parameters *params)
 919 {
 920         struct ieee80211_local *local = wiphy_priv(wiphy);
 921         struct sta_info *sta;
 922         struct ieee80211_sub_if_data *sdata;
 923         int err;
 924         int layer2_update;
 925
 926         if (params->vlan) {
 927                 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
 928
 929                 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
 930                     sdata->vif.type != NL80211_IFTYPE_AP)
 931                         return -EINVAL;
 932         } else
 933                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 934
 935         if (compare_ether_addr(mac, sdata->vif.addr) == 0)
 936                 return -EINVAL;
 937
 938         if (is_multicast_ether_addr(mac))
 939                 return -EINVAL;
 940
 941         sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
 942         if (!sta)
 943                 return -ENOMEM;
 944
 945         sta_info_move_state(sta, IEEE80211_STA_AUTH);
 946         sta_info_move_state(sta, IEEE80211_STA_ASSOC);
 947
 948         err = sta_apply_parameters(local, sta, params);
 949         if (err) {
 950                 sta_info_free(local, sta);
 951                 return err;
 952         }
 953
 954         /*
 955          * for TDLS, rate control should be initialized only when supported
 956          * rates are known.
 957          */
 958         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER))
 959                 rate_control_rate_init(sta);
 960
 961         layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
 962                 sdata->vif.type == NL80211_IFTYPE_AP;
 963
 964         err = sta_info_insert_rcu(sta);
 965         if (err) {
 966                 rcu_read_unlock();
 967                 return err;
 968         }
 969
 970         if (layer2_update)
 971                 ieee80211_send_layer2_update(sta);
 972
 973         rcu_read_unlock();
 974
 975         return 0;
 976 }
 977
 978 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
 979                                  u8 *mac)
 980 {
 981         struct ieee80211_local *local = wiphy_priv(wiphy);
 982         struct ieee80211_sub_if_data *sdata;
 983
 984         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 985
 986         if (mac)
 987                 return sta_info_destroy_addr_bss(sdata, mac);
 988
 989         sta_info_flush(local, sdata);
 990         return 0;
 991 }
 992
 993 static int ieee80211_change_station(struct wiphy *wiphy,
 994                                     struct net_device *dev,
 995                                     u8 *mac,
 996                                     struct station_parameters *params)
 997 {
 998         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 999         struct ieee80211_local *local = wiphy_priv(wiphy);
1000         struct sta_info *sta;
1001         struct ieee80211_sub_if_data *vlansdata;
1002
1003         mutex_lock(&local->sta_mtx);
1004
1005         sta = sta_info_get_bss(sdata, mac);
1006         if (!sta) {
1007                 mutex_unlock(&local->sta_mtx);
1008                 return -ENOENT;
1009         }
1010
1011         /* in station mode, supported rates are only valid with TDLS */
1012         if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1013             params->supported_rates &&
1014             !test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1015                 mutex_unlock(&local->sta_mtx);
1016                 return -EINVAL;
1017         }
1018
1019         if (params->vlan && params->vlan != sta->sdata->dev) {
1020                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1021
1022                 if (vlansdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1023                     vlansdata->vif.type != NL80211_IFTYPE_AP) {
1024                         mutex_unlock(&local->sta_mtx);
1025                         return -EINVAL;
1026                 }
1027
1028                 if (params->vlan->ieee80211_ptr->use_4addr) {
1029                         if (vlansdata->u.vlan.sta) {
1030                                 mutex_unlock(&local->sta_mtx);
1031                                 return -EBUSY;
1032                         }
1033
1034                         RCU_INIT_POINTER(vlansdata->u.vlan.sta, sta);
1035                 }
1036
1037                 sta->sdata = vlansdata;
1038                 ieee80211_send_layer2_update(sta);
1039         }
1040
1041         sta_apply_parameters(local, sta, params);
1042
1043         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) && params->supported_rates)
1044                 rate_control_rate_init(sta);
1045
1046         mutex_unlock(&local->sta_mtx);
1047
1048         if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1049             params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED))
1050                 ieee80211_recalc_ps(local, -1);
1051
1052         return 0;
1053 }
1054
1055 #ifdef CONFIG_MAC80211_MESH
1056 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1057                                  u8 *dst, u8 *next_hop)
1058 {
1059         struct ieee80211_sub_if_data *sdata;
1060         struct mesh_path *mpath;
1061         struct sta_info *sta;
1062         int err;
1063
1064         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1065
1066         rcu_read_lock();
1067         sta = sta_info_get(sdata, next_hop);
1068         if (!sta) {
1069                 rcu_read_unlock();
1070                 return -ENOENT;
1071         }
1072
1073         err = mesh_path_add(dst, sdata);
1074         if (err) {
1075                 rcu_read_unlock();
1076                 return err;
1077         }
1078
1079         mpath = mesh_path_lookup(dst, sdata);
1080         if (!mpath) {
1081                 rcu_read_unlock();
1082                 return -ENXIO;
1083         }
1084         mesh_path_fix_nexthop(mpath, sta);
1085
1086         rcu_read_unlock();
1087         return 0;
1088 }
1089
1090 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1091                                  u8 *dst)
1092 {
1093         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1094
1095         if (dst)
1096                 return mesh_path_del(dst, sdata);
1097
1098         mesh_path_flush_by_iface(sdata);
1099         return 0;
1100 }
1101
1102 static int ieee80211_change_mpath(struct wiphy *wiphy,
1103                                     struct net_device *dev,
1104                                     u8 *dst, u8 *next_hop)
1105 {
1106         struct ieee80211_sub_if_data *sdata;
1107         struct mesh_path *mpath;
1108         struct sta_info *sta;
1109
1110         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1111
1112         rcu_read_lock();
1113
1114         sta = sta_info_get(sdata, next_hop);
1115         if (!sta) {
1116                 rcu_read_unlock();
1117                 return -ENOENT;
1118         }
1119
1120         mpath = mesh_path_lookup(dst, sdata);
1121         if (!mpath) {
1122                 rcu_read_unlock();
1123                 return -ENOENT;
1124         }
1125
1126         mesh_path_fix_nexthop(mpath, sta);
1127
1128         rcu_read_unlock();
1129         return 0;
1130 }
1131
1132 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1133                             struct mpath_info *pinfo)
1134 {
1135         struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1136
1137         if (next_hop_sta)
1138                 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1139         else
1140                 memset(next_hop, 0, ETH_ALEN);
1141
1142         pinfo->generation = mesh_paths_generation;
1143
1144         pinfo->filled = MPATH_INFO_FRAME_QLEN |
1145                         MPATH_INFO_SN |
1146                         MPATH_INFO_METRIC |
1147                         MPATH_INFO_EXPTIME |
1148                         MPATH_INFO_DISCOVERY_TIMEOUT |
1149                         MPATH_INFO_DISCOVERY_RETRIES |
1150                         MPATH_INFO_FLAGS;
1151
1152         pinfo->frame_qlen = mpath->frame_queue.qlen;
1153         pinfo->sn = mpath->sn;
1154         pinfo->metric = mpath->metric;
1155         if (time_before(jiffies, mpath->exp_time))
1156                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1157         pinfo->discovery_timeout =
1158                         jiffies_to_msecs(mpath->discovery_timeout);
1159         pinfo->discovery_retries = mpath->discovery_retries;
1160         pinfo->flags = 0;
1161         if (mpath->flags & MESH_PATH_ACTIVE)
1162                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1163         if (mpath->flags & MESH_PATH_RESOLVING)
1164                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1165         if (mpath->flags & MESH_PATH_SN_VALID)
1166                 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1167         if (mpath->flags & MESH_PATH_FIXED)
1168                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1169         if (mpath->flags & MESH_PATH_RESOLVING)
1170                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1171
1172         pinfo->flags = mpath->flags;
1173 }
1174
1175 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1176                                u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1177
1178 {
1179         struct ieee80211_sub_if_data *sdata;
1180         struct mesh_path *mpath;
1181
1182         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1183
1184         rcu_read_lock();
1185         mpath = mesh_path_lookup(dst, sdata);
1186         if (!mpath) {
1187                 rcu_read_unlock();
1188                 return -ENOENT;
1189         }
1190         memcpy(dst, mpath->dst, ETH_ALEN);
1191         mpath_set_pinfo(mpath, next_hop, pinfo);
1192         rcu_read_unlock();
1193         return 0;
1194 }
1195
1196 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1197                                  int idx, u8 *dst, u8 *next_hop,
1198                                  struct mpath_info *pinfo)
1199 {
1200         struct ieee80211_sub_if_data *sdata;
1201         struct mesh_path *mpath;
1202
1203         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1204
1205         rcu_read_lock();
1206         mpath = mesh_path_lookup_by_idx(idx, sdata);
1207         if (!mpath) {
1208                 rcu_read_unlock();
1209                 return -ENOENT;
1210         }
1211         memcpy(dst, mpath->dst, ETH_ALEN);
1212         mpath_set_pinfo(mpath, next_hop, pinfo);
1213         rcu_read_unlock();
1214         return 0;
1215 }
1216
1217 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1218                                 struct net_device *dev,
1219                                 struct mesh_config *conf)
1220 {
1221         struct ieee80211_sub_if_data *sdata;
1222         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1223
1224         memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1225         return 0;
1226 }
1227
1228 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1229 {
1230         return (mask >> (parm-1)) & 0x1;
1231 }
1232
1233 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1234                 const struct mesh_setup *setup)
1235 {
1236         u8 *new_ie;
1237         const u8 *old_ie;
1238         struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1239                                         struct ieee80211_sub_if_data, u.mesh);
1240
1241         /* allocate information elements */
1242         new_ie = NULL;
1243         old_ie = ifmsh->ie;
1244
1245         if (setup->ie_len) {
1246                 new_ie = kmemdup(setup->ie, setup->ie_len,
1247                                 GFP_KERNEL);
1248                 if (!new_ie)
1249                         return -ENOMEM;
1250         }
1251         ifmsh->ie_len = setup->ie_len;
1252         ifmsh->ie = new_ie;
1253         kfree(old_ie);
1254
1255         /* now copy the rest of the setup parameters */
1256         ifmsh->mesh_id_len = setup->mesh_id_len;
1257         memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1258         ifmsh->mesh_pp_id = setup->path_sel_proto;
1259         ifmsh->mesh_pm_id = setup->path_metric;
1260         ifmsh->security = IEEE80211_MESH_SEC_NONE;
1261         if (setup->is_authenticated)
1262                 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1263         if (setup->is_secure)
1264                 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1265
1266         /* mcast rate setting in Mesh Node */
1267         memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1268                                                 sizeof(setup->mcast_rate));
1269
1270         return 0;
1271 }
1272
1273 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1274                                         struct net_device *dev, u32 mask,
1275                                         const struct mesh_config *nconf)
1276 {
1277         struct mesh_config *conf;
1278         struct ieee80211_sub_if_data *sdata;
1279         struct ieee80211_if_mesh *ifmsh;
1280
1281         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1282         ifmsh = &sdata->u.mesh;
1283
1284         /* Set the config options which we are interested in setting */
1285         conf = &(sdata->u.mesh.mshcfg);
1286         if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1287                 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1288         if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1289                 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1290         if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1291                 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1292         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1293                 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1294         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1295                 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1296         if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1297                 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1298         if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1299                 conf->dot11MeshTTL = nconf->element_ttl;
1300         if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask))
1301                 conf->auto_open_plinks = nconf->auto_open_plinks;
1302         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1303                 conf->dot11MeshHWMPmaxPREQretries =
1304                         nconf->dot11MeshHWMPmaxPREQretries;
1305         if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1306                 conf->path_refresh_time = nconf->path_refresh_time;
1307         if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1308                 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1309         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1310                 conf->dot11MeshHWMPactivePathTimeout =
1311                         nconf->dot11MeshHWMPactivePathTimeout;
1312         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1313                 conf->dot11MeshHWMPpreqMinInterval =
1314                         nconf->dot11MeshHWMPpreqMinInterval;
1315         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1316                 conf->dot11MeshHWMPperrMinInterval =
1317                         nconf->dot11MeshHWMPperrMinInterval;
1318         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1319                            mask))
1320                 conf->dot11MeshHWMPnetDiameterTraversalTime =
1321                         nconf->dot11MeshHWMPnetDiameterTraversalTime;
1322         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1323                 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1324                 ieee80211_mesh_root_setup(ifmsh);
1325         }
1326         if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1327                 /* our current gate announcement implementation rides on root
1328                  * announcements, so require this ifmsh to also be a root node
1329                  * */
1330                 if (nconf->dot11MeshGateAnnouncementProtocol &&
1331                     !conf->dot11MeshHWMPRootMode) {
1332                         conf->dot11MeshHWMPRootMode = 1;
1333                         ieee80211_mesh_root_setup(ifmsh);
1334                 }
1335                 conf->dot11MeshGateAnnouncementProtocol =
1336                         nconf->dot11MeshGateAnnouncementProtocol;
1337         }
1338         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask)) {
1339                 conf->dot11MeshHWMPRannInterval =
1340                         nconf->dot11MeshHWMPRannInterval;
1341         }
1342         return 0;
1343 }
1344
1345 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1346                                const struct mesh_config *conf,
1347                                const struct mesh_setup *setup)
1348 {
1349         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1350         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1351         int err;
1352
1353         memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1354         err = copy_mesh_setup(ifmsh, setup);
1355         if (err)
1356                 return err;
1357         ieee80211_start_mesh(sdata);
1358
1359         return 0;
1360 }
1361
1362 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1363 {
1364         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1365
1366         ieee80211_stop_mesh(sdata);
1367
1368         return 0;
1369 }
1370 #endif
1371
1372 static int ieee80211_change_bss(struct wiphy *wiphy,
1373                                 struct net_device *dev,
1374                                 struct bss_parameters *params)
1375 {
1376         struct ieee80211_sub_if_data *sdata;
1377         u32 changed = 0;
1378
1379         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1380
1381         if (params->use_cts_prot >= 0) {
1382                 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1383                 changed |= BSS_CHANGED_ERP_CTS_PROT;
1384         }
1385         if (params->use_short_preamble >= 0) {
1386                 sdata->vif.bss_conf.use_short_preamble =
1387                         params->use_short_preamble;
1388                 changed |= BSS_CHANGED_ERP_PREAMBLE;
1389         }
1390
1391         if (!sdata->vif.bss_conf.use_short_slot &&
1392             sdata->local->hw.conf.channel->band == IEEE80211_BAND_5GHZ) {
1393                 sdata->vif.bss_conf.use_short_slot = true;
1394                 changed |= BSS_CHANGED_ERP_SLOT;
1395         }
1396
1397         if (params->use_short_slot_time >= 0) {
1398                 sdata->vif.bss_conf.use_short_slot =
1399                         params->use_short_slot_time;
1400                 changed |= BSS_CHANGED_ERP_SLOT;
1401         }
1402
1403         if (params->basic_rates) {
1404                 int i, j;
1405                 u32 rates = 0;
1406                 struct ieee80211_local *local = wiphy_priv(wiphy);
1407                 struct ieee80211_supported_band *sband =
1408                         wiphy->bands[local->oper_channel->band];
1409
1410                 for (i = 0; i < params->basic_rates_len; i++) {
1411                         int rate = (params->basic_rates[i] & 0x7f) * 5;
1412                         for (j = 0; j < sband->n_bitrates; j++) {
1413                                 if (sband->bitrates[j].bitrate == rate)
1414                                         rates |= BIT(j);
1415                         }
1416                 }
1417                 sdata->vif.bss_conf.basic_rates = rates;
1418                 changed |= BSS_CHANGED_BASIC_RATES;
1419         }
1420
1421         if (params->ap_isolate >= 0) {
1422                 if (params->ap_isolate)
1423                         sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1424                 else
1425                         sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1426         }
1427
1428         if (params->ht_opmode >= 0) {
1429                 sdata->vif.bss_conf.ht_operation_mode =
1430                         (u16) params->ht_opmode;
1431                 changed |= BSS_CHANGED_HT;
1432         }
1433
1434         ieee80211_bss_info_change_notify(sdata, changed);
1435
1436         return 0;
1437 }
1438
1439 static int ieee80211_set_txq_params(struct wiphy *wiphy,
1440                                     struct net_device *dev,
1441                                     struct ieee80211_txq_params *params)
1442 {
1443         struct ieee80211_local *local = wiphy_priv(wiphy);
1444         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1445         struct ieee80211_tx_queue_params p;
1446
1447         if (!local->ops->conf_tx)
1448                 return -EOPNOTSUPP;
1449
1450         memset(&p, 0, sizeof(p));
1451         p.aifs = params->aifs;
1452         p.cw_max = params->cwmax;
1453         p.cw_min = params->cwmin;
1454         p.txop = params->txop;
1455
1456         /*
1457          * Setting tx queue params disables u-apsd because it's only
1458          * called in master mode.
1459          */
1460         p.uapsd = false;
1461
1462         if (params->queue >= local->hw.queues)
1463                 return -EINVAL;
1464
1465         sdata->tx_conf[params->queue] = p;
1466         if (drv_conf_tx(local, sdata, params->queue, &p)) {
1467                 wiphy_debug(local->hw.wiphy,
1468                             "failed to set TX queue parameters for queue %d\n",
1469                             params->queue);
1470                 return -EINVAL;
1471         }
1472
1473         return 0;
1474 }
1475
1476 static int ieee80211_set_channel(struct wiphy *wiphy,
1477                                  struct net_device *netdev,
1478                                  struct ieee80211_channel *chan,
1479                                  enum nl80211_channel_type channel_type)
1480 {
1481         struct ieee80211_local *local = wiphy_priv(wiphy);
1482         struct ieee80211_sub_if_data *sdata = NULL;
1483         struct ieee80211_channel *old_oper;
1484         enum nl80211_channel_type old_oper_type;
1485         enum nl80211_channel_type old_vif_oper_type= NL80211_CHAN_NO_HT;
1486
1487         if (netdev)
1488                 sdata = IEEE80211_DEV_TO_SUB_IF(netdev);
1489
1490         switch (ieee80211_get_channel_mode(local, NULL)) {
1491         case CHAN_MODE_HOPPING:
1492                 return -EBUSY;
1493         case CHAN_MODE_FIXED:
1494                 if (local->oper_channel != chan)
1495                         return -EBUSY;
1496                 if (!sdata && local->_oper_channel_type == channel_type)
1497                         return 0;
1498                 break;
1499         case CHAN_MODE_UNDEFINED:
1500                 break;
1501         }
1502
1503         if (sdata)
1504                 old_vif_oper_type = sdata->vif.bss_conf.channel_type;
1505         old_oper_type = local->_oper_channel_type;
1506
1507         if (!ieee80211_set_channel_type(local, sdata, channel_type))
1508                 return -EBUSY;
1509
1510         old_oper = local->oper_channel;
1511         local->oper_channel = chan;
1512
1513         /* Update driver if changes were actually made. */
1514         if ((old_oper != local->oper_channel) ||
1515             (old_oper_type != local->_oper_channel_type))
1516                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL);
1517
1518         if (sdata && sdata->vif.type != NL80211_IFTYPE_MONITOR &&
1519             old_vif_oper_type != sdata->vif.bss_conf.channel_type)
1520                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1521
1522         return 0;
1523 }
1524
1525 #ifdef CONFIG_PM
1526 static int ieee80211_suspend(struct wiphy *wiphy,
1527                              struct cfg80211_wowlan *wowlan)
1528 {
1529         return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
1530 }
1531
1532 static int ieee80211_resume(struct wiphy *wiphy)
1533 {
1534         return __ieee80211_resume(wiphy_priv(wiphy));
1535 }
1536 #else
1537 #define ieee80211_suspend NULL
1538 #define ieee80211_resume NULL
1539 #endif
1540
1541 static int ieee80211_scan(struct wiphy *wiphy,
1542                           struct net_device *dev,
1543                           struct cfg80211_scan_request *req)
1544 {
1545         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1546
1547         switch (ieee80211_vif_type_p2p(&sdata->vif)) {
1548         case NL80211_IFTYPE_STATION:
1549         case NL80211_IFTYPE_ADHOC:
1550         case NL80211_IFTYPE_MESH_POINT:
1551         case NL80211_IFTYPE_P2P_CLIENT:
1552                 break;
1553         case NL80211_IFTYPE_P2P_GO:
1554                 if (sdata->local->ops->hw_scan)
1555                         break;
1556                 /*
1557                  * FIXME: implement NoA while scanning in software,
1558                  * for now fall through to allow scanning only when
1559                  * beaconing hasn't been configured yet
1560                  */
1561         case NL80211_IFTYPE_AP:
1562                 if (sdata->u.ap.beacon)
1563                         return -EOPNOTSUPP;
1564                 break;
1565         default:
1566                 return -EOPNOTSUPP;
1567         }
1568
1569         return ieee80211_request_scan(sdata, req);
1570 }
1571
1572 static int
1573 ieee80211_sched_scan_start(struct wiphy *wiphy,
1574                            struct net_device *dev,
1575                            struct cfg80211_sched_scan_request *req)
1576 {
1577         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1578
1579         if (!sdata->local->ops->sched_scan_start)
1580                 return -EOPNOTSUPP;
1581
1582         return ieee80211_request_sched_scan_start(sdata, req);
1583 }
1584
1585 static int
1586 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
1587 {
1588         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1589
1590         if (!sdata->local->ops->sched_scan_stop)
1591                 return -EOPNOTSUPP;
1592
1593         return ieee80211_request_sched_scan_stop(sdata);
1594 }
1595
1596 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
1597                           struct cfg80211_auth_request *req)
1598 {
1599         return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
1600 }
1601
1602 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
1603                            struct cfg80211_assoc_request *req)
1604 {
1605         struct ieee80211_local *local = wiphy_priv(wiphy);
1606         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1607
1608         switch (ieee80211_get_channel_mode(local, sdata)) {
1609         case CHAN_MODE_HOPPING:
1610                 return -EBUSY;
1611         case CHAN_MODE_FIXED:
1612                 if (local->oper_channel == req->bss->channel)
1613                         break;
1614                 return -EBUSY;
1615         case CHAN_MODE_UNDEFINED:
1616                 break;
1617         }
1618
1619         return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
1620 }
1621
1622 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
1623                             struct cfg80211_deauth_request *req,
1624                             void *cookie)
1625 {
1626         return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev),
1627                                     req, cookie);
1628 }
1629
1630 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
1631                               struct cfg80211_disassoc_request *req,
1632                               void *cookie)
1633 {
1634         return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev),
1635                                       req, cookie);
1636 }
1637
1638 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1639                                struct cfg80211_ibss_params *params)
1640 {
1641         struct ieee80211_local *local = wiphy_priv(wiphy);
1642         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1643
1644         switch (ieee80211_get_channel_mode(local, sdata)) {
1645         case CHAN_MODE_HOPPING:
1646                 return -EBUSY;
1647         case CHAN_MODE_FIXED:
1648                 if (!params->channel_fixed)
1649                         return -EBUSY;
1650                 if (local->oper_channel == params->channel)
1651                         break;
1652                 return -EBUSY;
1653         case CHAN_MODE_UNDEFINED:
1654                 break;
1655         }
1656
1657         return ieee80211_ibss_join(sdata, params);
1658 }
1659
1660 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
1661 {
1662         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1663
1664         return ieee80211_ibss_leave(sdata);
1665 }
1666
1667 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1668 {
1669         struct ieee80211_local *local = wiphy_priv(wiphy);
1670         int err;
1671
1672         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
1673                 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
1674
1675                 if (err)
1676                         return err;
1677         }
1678
1679         if (changed & WIPHY_PARAM_COVERAGE_CLASS) {
1680                 err = drv_set_coverage_class(local, wiphy->coverage_class);
1681
1682                 if (err)
1683                         return err;
1684         }
1685
1686         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1687                 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
1688
1689                 if (err)
1690                         return err;
1691         }
1692
1693         if (changed & WIPHY_PARAM_RETRY_SHORT)
1694                 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
1695         if (changed & WIPHY_PARAM_RETRY_LONG)
1696                 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
1697         if (changed &
1698             (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
1699                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
1700
1701         return 0;
1702 }
1703
1704 static int ieee80211_set_tx_power(struct wiphy *wiphy,
1705                                   enum nl80211_tx_power_setting type, int mbm)
1706 {
1707         struct ieee80211_local *local = wiphy_priv(wiphy);
1708         struct ieee80211_channel *chan = local->hw.conf.channel;
1709         u32 changes = 0;
1710
1711         switch (type) {
1712         case NL80211_TX_POWER_AUTOMATIC:
1713                 local->user_power_level = -1;
1714                 break;
1715         case NL80211_TX_POWER_LIMITED:
1716                 if (mbm < 0 || (mbm % 100))
1717                         return -EOPNOTSUPP;
1718                 local->user_power_level = MBM_TO_DBM(mbm);
1719                 break;
1720         case NL80211_TX_POWER_FIXED:
1721                 if (mbm < 0 || (mbm % 100))
1722                         return -EOPNOTSUPP;
1723                 /* TODO: move to cfg80211 when it knows the channel */
1724                 if (MBM_TO_DBM(mbm) > chan->max_power)
1725                         return -EINVAL;
1726                 local->user_power_level = MBM_TO_DBM(mbm);
1727                 break;
1728         }
1729
1730         ieee80211_hw_config(local, changes);
1731
1732         return 0;
1733 }
1734
1735 static int ieee80211_get_tx_power(struct wiphy *wiphy, int *dbm)
1736 {
1737         struct ieee80211_local *local = wiphy_priv(wiphy);
1738
1739         *dbm = local->hw.conf.power_level;
1740
1741         return 0;
1742 }
1743
1744 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
1745                                   const u8 *addr)
1746 {
1747         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1748
1749         memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
1750
1751         return 0;
1752 }
1753
1754 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
1755 {
1756         struct ieee80211_local *local = wiphy_priv(wiphy);
1757
1758         drv_rfkill_poll(local);
1759 }
1760
1761 #ifdef CONFIG_NL80211_TESTMODE
1762 static int ieee80211_testmode_cmd(struct wiphy *wiphy, void *data, int len)
1763 {
1764         struct ieee80211_local *local = wiphy_priv(wiphy);
1765
1766         if (!local->ops->testmode_cmd)
1767                 return -EOPNOTSUPP;
1768
1769         return local->ops->testmode_cmd(&local->hw, data, len);
1770 }
1771
1772 static int ieee80211_testmode_dump(struct wiphy *wiphy,
1773                                    struct sk_buff *skb,
1774                                    struct netlink_callback *cb,
1775                                    void *data, int len)
1776 {
1777         struct ieee80211_local *local = wiphy_priv(wiphy);
1778
1779         if (!local->ops->testmode_dump)
1780                 return -EOPNOTSUPP;
1781
1782         return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
1783 }
1784 #endif
1785
1786 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
1787                              enum ieee80211_smps_mode smps_mode)
1788 {
1789         const u8 *ap;
1790         enum ieee80211_smps_mode old_req;
1791         int err;
1792
1793         lockdep_assert_held(&sdata->u.mgd.mtx);
1794
1795         old_req = sdata->u.mgd.req_smps;
1796         sdata->u.mgd.req_smps = smps_mode;
1797
1798         if (old_req == smps_mode &&
1799             smps_mode != IEEE80211_SMPS_AUTOMATIC)
1800                 return 0;
1801
1802         /*
1803          * If not associated, or current association is not an HT
1804          * association, there's no need to send an action frame.
1805          */
1806         if (!sdata->u.mgd.associated ||
1807             sdata->vif.bss_conf.channel_type == NL80211_CHAN_NO_HT) {
1808                 mutex_lock(&sdata->local->iflist_mtx);
1809                 ieee80211_recalc_smps(sdata->local);
1810                 mutex_unlock(&sdata->local->iflist_mtx);
1811                 return 0;
1812         }
1813
1814         ap = sdata->u.mgd.associated->bssid;
1815
1816         if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
1817                 if (sdata->u.mgd.powersave)
1818                         smps_mode = IEEE80211_SMPS_DYNAMIC;
1819                 else
1820                         smps_mode = IEEE80211_SMPS_OFF;
1821         }
1822
1823         /* send SM PS frame to AP */
1824         err = ieee80211_send_smps_action(sdata, smps_mode,
1825                                          ap, ap);
1826         if (err)
1827                 sdata->u.mgd.req_smps = old_req;
1828
1829         return err;
1830 }
1831
1832 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
1833                                     bool enabled, int timeout)
1834 {
1835         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1836         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1837
1838         if (sdata->vif.type != NL80211_IFTYPE_STATION)
1839                 return -EOPNOTSUPP;
1840
1841         if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
1842                 return -EOPNOTSUPP;
1843
1844         if (enabled == sdata->u.mgd.powersave &&
1845             timeout == local->dynamic_ps_forced_timeout)
1846                 return 0;
1847
1848         sdata->u.mgd.powersave = enabled;
1849         local->dynamic_ps_forced_timeout = timeout;
1850
1851         /* no change, but if automatic follow powersave */
1852         mutex_lock(&sdata->u.mgd.mtx);
1853         __ieee80211_request_smps(sdata, sdata->u.mgd.req_smps);
1854         mutex_unlock(&sdata->u.mgd.mtx);
1855
1856         if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
1857                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1858
1859         ieee80211_recalc_ps(local, -1);
1860
1861         return 0;
1862 }
1863
1864 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
1865                                          struct net_device *dev,
1866                                          s32 rssi_thold, u32 rssi_hyst)
1867 {
1868         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1869         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1870         struct ieee80211_vif *vif = &sdata->vif;
1871         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
1872
1873         if (rssi_thold == bss_conf->cqm_rssi_thold &&
1874             rssi_hyst == bss_conf->cqm_rssi_hyst)
1875                 return 0;
1876
1877         bss_conf->cqm_rssi_thold = rssi_thold;
1878         bss_conf->cqm_rssi_hyst = rssi_hyst;
1879
1880         if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_CQM_RSSI)) {
1881                 if (sdata->vif.type != NL80211_IFTYPE_STATION)
1882                         return -EOPNOTSUPP;
1883                 return 0;
1884         }
1885
1886         /* tell the driver upon association, unless already associated */
1887         if (sdata->u.mgd.associated)
1888                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
1889
1890         return 0;
1891 }
1892
1893 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
1894                                       struct net_device *dev,
1895                                       const u8 *addr,
1896                                       const struct cfg80211_bitrate_mask *mask)
1897 {
1898         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1899         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1900         int i, ret;
1901
1902         if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) {
1903                 ret = drv_set_bitrate_mask(local, sdata, mask);
1904                 if (ret)
1905                         return ret;
1906         }
1907
1908         for (i = 0; i < IEEE80211_NUM_BANDS; i++)
1909                 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
1910
1911         return 0;
1912 }
1913
1914 static int ieee80211_remain_on_channel_hw(struct ieee80211_local *local,
1915                                           struct net_device *dev,
1916                                           struct ieee80211_channel *chan,
1917                                           enum nl80211_channel_type chantype,
1918                                           unsigned int duration, u64 *cookie)
1919 {
1920         int ret;
1921         u32 random_cookie;
1922
1923         lockdep_assert_held(&local->mtx);
1924
1925         if (local->hw_roc_cookie)
1926                 return -EBUSY;
1927         /* must be nonzero */
1928         random_cookie = random32() | 1;
1929
1930         *cookie = random_cookie;
1931         local->hw_roc_dev = dev;
1932         local->hw_roc_cookie = random_cookie;
1933         local->hw_roc_channel = chan;
1934         local->hw_roc_channel_type = chantype;
1935         local->hw_roc_duration = duration;
1936         ret = drv_remain_on_channel(local, chan, chantype, duration);
1937         if (ret) {
1938                 local->hw_roc_channel = NULL;
1939                 local->hw_roc_cookie = 0;
1940         }
1941
1942         return ret;
1943 }
1944
1945 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
1946                                        struct net_device *dev,
1947                                        struct ieee80211_channel *chan,
1948                                        enum nl80211_channel_type channel_type,
1949                                        unsigned int duration,
1950                                        u64 *cookie)
1951 {
1952         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1953         struct ieee80211_local *local = sdata->local;
1954
1955         if (local->ops->remain_on_channel) {
1956                 int ret;
1957
1958                 mutex_lock(&local->mtx);
1959                 ret = ieee80211_remain_on_channel_hw(local, dev,
1960                                                      chan, channel_type,
1961                                                      duration, cookie);
1962                 local->hw_roc_for_tx = false;
1963                 mutex_unlock(&local->mtx);
1964
1965                 return ret;
1966         }
1967
1968         return ieee80211_wk_remain_on_channel(sdata, chan, channel_type,
1969                                               duration, cookie);
1970 }
1971
1972 static int ieee80211_cancel_remain_on_channel_hw(struct ieee80211_local *local,
1973                                                  u64 cookie)
1974 {
1975         int ret;
1976
1977         lockdep_assert_held(&local->mtx);
1978
1979         if (local->hw_roc_cookie != cookie)
1980                 return -ENOENT;
1981
1982         ret = drv_cancel_remain_on_channel(local);
1983         if (ret)
1984                 return ret;
1985
1986         local->hw_roc_cookie = 0;
1987         local->hw_roc_channel = NULL;
1988
1989         ieee80211_recalc_idle(local);
1990
1991         return 0;
1992 }
1993
1994 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
1995                                               struct net_device *dev,
1996                                               u64 cookie)
1997 {
1998         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1999         struct ieee80211_local *local = sdata->local;
2000
2001         if (local->ops->cancel_remain_on_channel) {
2002                 int ret;
2003
2004                 mutex_lock(&local->mtx);
2005                 ret = ieee80211_cancel_remain_on_channel_hw(local, cookie);
2006                 mutex_unlock(&local->mtx);
2007
2008                 return ret;
2009         }
2010
2011         return ieee80211_wk_cancel_remain_on_channel(sdata, cookie);
2012 }
2013
2014 static enum work_done_result
2015 ieee80211_offchan_tx_done(struct ieee80211_work *wk, struct sk_buff *skb)
2016 {
2017         /*
2018          * Use the data embedded in the work struct for reporting
2019          * here so if the driver mangled the SKB before dropping
2020          * it (which is the only way we really should get here)
2021          * then we don't report mangled data.
2022          *
2023          * If there was no wait time, then by the time we get here
2024          * the driver will likely not have reported the status yet,
2025          * so in that case userspace will have to deal with it.
2026          */
2027
2028         if (wk->offchan_tx.wait && !wk->offchan_tx.status)
2029                 cfg80211_mgmt_tx_status(wk->sdata->dev,
2030                                         (unsigned long) wk->offchan_tx.frame,
2031                                         wk->ie, wk->ie_len, false, GFP_KERNEL);
2032
2033         return WORK_DONE_DESTROY;
2034 }
2035
2036 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct net_device *dev,
2037                              struct ieee80211_channel *chan, bool offchan,
2038                              enum nl80211_channel_type channel_type,
2039                              bool channel_type_valid, unsigned int wait,
2040                              const u8 *buf, size_t len, bool no_cck,
2041                              bool dont_wait_for_ack, u64 *cookie)
2042 {
2043         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2044         struct ieee80211_local *local = sdata->local;
2045         struct sk_buff *skb;
2046         struct sta_info *sta;
2047         struct ieee80211_work *wk;
2048         const struct ieee80211_mgmt *mgmt = (void *)buf;
2049         u32 flags;
2050         bool is_offchan = false;
2051
2052         if (dont_wait_for_ack)
2053                 flags = IEEE80211_TX_CTL_NO_ACK;
2054         else
2055                 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
2056                         IEEE80211_TX_CTL_REQ_TX_STATUS;
2057
2058         /* Check that we are on the requested channel for transmission */
2059         if (chan != local->tmp_channel &&
2060             chan != local->oper_channel)
2061                 is_offchan = true;
2062         if (channel_type_valid &&
2063             (channel_type != local->tmp_channel_type &&
2064              channel_type != local->_oper_channel_type))
2065                 is_offchan = true;
2066
2067         if (chan == local->hw_roc_channel) {
2068                 /* TODO: check channel type? */
2069                 is_offchan = false;
2070                 flags |= IEEE80211_TX_CTL_TX_OFFCHAN;
2071         }
2072
2073         if (no_cck)
2074                 flags |= IEEE80211_TX_CTL_NO_CCK_RATE;
2075
2076         if (is_offchan && !offchan)
2077                 return -EBUSY;
2078
2079         switch (sdata->vif.type) {
2080         case NL80211_IFTYPE_ADHOC:
2081         case NL80211_IFTYPE_AP:
2082         case NL80211_IFTYPE_AP_VLAN:
2083         case NL80211_IFTYPE_P2P_GO:
2084         case NL80211_IFTYPE_MESH_POINT:
2085                 if (!ieee80211_is_action(mgmt->frame_control) ||
2086                     mgmt->u.action.category == WLAN_CATEGORY_PUBLIC)
2087                         break;
2088                 rcu_read_lock();
2089                 sta = sta_info_get(sdata, mgmt->da);
2090                 rcu_read_unlock();
2091                 if (!sta)
2092                         return -ENOLINK;
2093                 break;
2094         case NL80211_IFTYPE_STATION:
2095         case NL80211_IFTYPE_P2P_CLIENT:
2096                 break;
2097         default:
2098                 return -EOPNOTSUPP;
2099         }
2100
2101         skb = dev_alloc_skb(local->hw.extra_tx_headroom + len);
2102         if (!skb)
2103                 return -ENOMEM;
2104         skb_reserve(skb, local->hw.extra_tx_headroom);
2105
2106         memcpy(skb_put(skb, len), buf, len);
2107
2108         IEEE80211_SKB_CB(skb)->flags = flags;
2109
2110         skb->dev = sdata->dev;
2111
2112         *cookie = (unsigned long) skb;
2113
2114         if (is_offchan && local->ops->remain_on_channel) {
2115                 unsigned int duration;
2116                 int ret;
2117
2118                 mutex_lock(&local->mtx);
2119                 /*
2120                  * If the duration is zero, then the driver
2121                  * wouldn't actually do anything. Set it to
2122                  * 100 for now.
2123                  *
2124                  * TODO: cancel the off-channel operation
2125                  *       when we get the SKB's TX status and
2126                  *       the wait time was zero before.
2127                  */
2128                 duration = 100;
2129                 if (wait)
2130                         duration = wait;
2131                 ret = ieee80211_remain_on_channel_hw(local, dev, chan,
2132                                                      channel_type,
2133                                                      duration, cookie);
2134                 if (ret) {
2135                         kfree_skb(skb);
2136                         mutex_unlock(&local->mtx);
2137                         return ret;
2138                 }
2139
2140                 local->hw_roc_for_tx = true;
2141                 local->hw_roc_duration = wait;
2142
2143                 /*
2144                  * queue up frame for transmission after
2145                  * ieee80211_ready_on_channel call
2146                  */
2147
2148                 /* modify cookie to prevent API mismatches */
2149                 *cookie ^= 2;
2150                 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN;
2151                 local->hw_roc_skb = skb;
2152                 local->hw_roc_skb_for_status = skb;
2153                 mutex_unlock(&local->mtx);
2154
2155                 return 0;
2156         }
2157
2158         /*
2159          * Can transmit right away if the channel was the
2160          * right one and there's no wait involved... If a
2161          * wait is involved, we might otherwise not be on
2162          * the right channel for long enough!
2163          */
2164         if (!is_offchan && !wait && !sdata->vif.bss_conf.idle) {
2165                 ieee80211_tx_skb(sdata, skb);
2166                 return 0;
2167         }
2168
2169         wk = kzalloc(sizeof(*wk) + len, GFP_KERNEL);
2170         if (!wk) {
2171                 kfree_skb(skb);
2172                 return -ENOMEM;
2173         }
2174
2175         wk->type = IEEE80211_WORK_OFFCHANNEL_TX;
2176         wk->chan = chan;
2177         wk->chan_type = channel_type;
2178         wk->sdata = sdata;
2179         wk->done = ieee80211_offchan_tx_done;
2180         wk->offchan_tx.frame = skb;
2181         wk->offchan_tx.wait = wait;
2182         wk->ie_len = len;
2183         memcpy(wk->ie, buf, len);
2184
2185         ieee80211_add_work(wk);
2186         return 0;
2187 }
2188
2189 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
2190                                          struct net_device *dev,
2191                                          u64 cookie)
2192 {
2193         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2194         struct ieee80211_local *local = sdata->local;
2195         struct ieee80211_work *wk;
2196         int ret = -ENOENT;
2197
2198         mutex_lock(&local->mtx);
2199
2200         if (local->ops->cancel_remain_on_channel) {
2201                 cookie ^= 2;
2202                 ret = ieee80211_cancel_remain_on_channel_hw(local, cookie);
2203
2204                 if (ret == 0) {
2205                         kfree_skb(local->hw_roc_skb);
2206                         local->hw_roc_skb = NULL;
2207                         local->hw_roc_skb_for_status = NULL;
2208                 }
2209
2210                 mutex_unlock(&local->mtx);
2211
2212                 return ret;
2213         }
2214
2215         list_for_each_entry(wk, &local->work_list, list) {
2216                 if (wk->sdata != sdata)
2217                         continue;
2218
2219                 if (wk->type != IEEE80211_WORK_OFFCHANNEL_TX)
2220                         continue;
2221
2222                 if (cookie != (unsigned long) wk->offchan_tx.frame)
2223                         continue;
2224
2225                 wk->timeout = jiffies;
2226
2227                 ieee80211_queue_work(&local->hw, &local->work_work);
2228                 ret = 0;
2229                 break;
2230         }
2231         mutex_unlock(&local->mtx);
2232
2233         return ret;
2234 }
2235
2236 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
2237                                           struct net_device *dev,
2238                                           u16 frame_type, bool reg)
2239 {
2240         struct ieee80211_local *local = wiphy_priv(wiphy);
2241
2242         if (frame_type != (IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ))
2243                 return;
2244
2245         if (reg)
2246                 local->probe_req_reg++;
2247         else
2248                 local->probe_req_reg--;
2249
2250         ieee80211_queue_work(&local->hw, &local->reconfig_filter);
2251 }
2252
2253 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
2254 {
2255         struct ieee80211_local *local = wiphy_priv(wiphy);
2256
2257         if (local->started)
2258                 return -EOPNOTSUPP;
2259
2260         return drv_set_antenna(local, tx_ant, rx_ant);
2261 }
2262
2263 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
2264 {
2265         struct ieee80211_local *local = wiphy_priv(wiphy);
2266
2267         return drv_get_antenna(local, tx_ant, rx_ant);
2268 }
2269
2270 static int ieee80211_set_ringparam(struct wiphy *wiphy, u32 tx, u32 rx)
2271 {
2272         struct ieee80211_local *local = wiphy_priv(wiphy);
2273
2274         return drv_set_ringparam(local, tx, rx);
2275 }
2276
2277 static void ieee80211_get_ringparam(struct wiphy *wiphy,
2278                                     u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max)
2279 {
2280         struct ieee80211_local *local = wiphy_priv(wiphy);
2281
2282         drv_get_ringparam(local, tx, tx_max, rx, rx_max);
2283 }
2284
2285 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
2286                                     struct net_device *dev,
2287                                     struct cfg80211_gtk_rekey_data *data)
2288 {
2289         struct ieee80211_local *local = wiphy_priv(wiphy);
2290         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2291
2292         if (!local->ops->set_rekey_data)
2293                 return -EOPNOTSUPP;
2294
2295         drv_set_rekey_data(local, sdata, data);
2296
2297         return 0;
2298 }
2299
2300 static void ieee80211_tdls_add_ext_capab(struct sk_buff *skb)
2301 {
2302         u8 *pos = (void *)skb_put(skb, 7);
2303
2304         *pos++ = WLAN_EID_EXT_CAPABILITY;
2305         *pos++ = 5; /* len */
2306         *pos++ = 0x0;
2307         *pos++ = 0x0;
2308         *pos++ = 0x0;
2309         *pos++ = 0x0;
2310         *pos++ = WLAN_EXT_CAPA5_TDLS_ENABLED;
2311 }
2312
2313 static u16 ieee80211_get_tdls_sta_capab(struct ieee80211_sub_if_data *sdata)
2314 {
2315         struct ieee80211_local *local = sdata->local;
2316         u16 capab;
2317
2318         capab = 0;
2319         if (local->oper_channel->band != IEEE80211_BAND_2GHZ)
2320                 return capab;
2321
2322         if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE))
2323                 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
2324         if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE))
2325                 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
2326
2327         return capab;
2328 }
2329
2330 static void ieee80211_tdls_add_link_ie(struct sk_buff *skb, u8 *src_addr,
2331                                        u8 *peer, u8 *bssid)
2332 {
2333         struct ieee80211_tdls_lnkie *lnkid;
2334
2335         lnkid = (void *)skb_put(skb, sizeof(struct ieee80211_tdls_lnkie));
2336
2337         lnkid->ie_type = WLAN_EID_LINK_ID;
2338         lnkid->ie_len = sizeof(struct ieee80211_tdls_lnkie) - 2;
2339
2340         memcpy(lnkid->bssid, bssid, ETH_ALEN);
2341         memcpy(lnkid->init_sta, src_addr, ETH_ALEN);
2342         memcpy(lnkid->resp_sta, peer, ETH_ALEN);
2343 }
2344
2345 static int
2346 ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev,
2347                                u8 *peer, u8 action_code, u8 dialog_token,
2348                                u16 status_code, struct sk_buff *skb)
2349 {
2350         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2351         struct ieee80211_tdls_data *tf;
2352
2353         tf = (void *)skb_put(skb, offsetof(struct ieee80211_tdls_data, u));
2354
2355         memcpy(tf->da, peer, ETH_ALEN);
2356         memcpy(tf->sa, sdata->vif.addr, ETH_ALEN);
2357         tf->ether_type = cpu_to_be16(ETH_P_TDLS);
2358         tf->payload_type = WLAN_TDLS_SNAP_RFTYPE;
2359
2360         switch (action_code) {
2361         case WLAN_TDLS_SETUP_REQUEST:
2362                 tf->category = WLAN_CATEGORY_TDLS;
2363                 tf->action_code = WLAN_TDLS_SETUP_REQUEST;
2364
2365                 skb_put(skb, sizeof(tf->u.setup_req));
2366                 tf->u.setup_req.dialog_token = dialog_token;
2367                 tf->u.setup_req.capability =
2368                         cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2369
2370                 ieee80211_add_srates_ie(&sdata->vif, skb);
2371                 ieee80211_add_ext_srates_ie(&sdata->vif, skb);
2372                 ieee80211_tdls_add_ext_capab(skb);
2373                 break;
2374         case WLAN_TDLS_SETUP_RESPONSE:
2375                 tf->category = WLAN_CATEGORY_TDLS;
2376                 tf->action_code = WLAN_TDLS_SETUP_RESPONSE;
2377
2378                 skb_put(skb, sizeof(tf->u.setup_resp));
2379                 tf->u.setup_resp.status_code = cpu_to_le16(status_code);
2380                 tf->u.setup_resp.dialog_token = dialog_token;
2381                 tf->u.setup_resp.capability =
2382                         cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2383
2384                 ieee80211_add_srates_ie(&sdata->vif, skb);
2385                 ieee80211_add_ext_srates_ie(&sdata->vif, skb);
2386                 ieee80211_tdls_add_ext_capab(skb);
2387                 break;
2388         case WLAN_TDLS_SETUP_CONFIRM:
2389                 tf->category = WLAN_CATEGORY_TDLS;
2390                 tf->action_code = WLAN_TDLS_SETUP_CONFIRM;
2391
2392                 skb_put(skb, sizeof(tf->u.setup_cfm));
2393                 tf->u.setup_cfm.status_code = cpu_to_le16(status_code);
2394                 tf->u.setup_cfm.dialog_token = dialog_token;
2395                 break;
2396         case WLAN_TDLS_TEARDOWN:
2397                 tf->category = WLAN_CATEGORY_TDLS;
2398                 tf->action_code = WLAN_TDLS_TEARDOWN;
2399
2400                 skb_put(skb, sizeof(tf->u.teardown));
2401                 tf->u.teardown.reason_code = cpu_to_le16(status_code);
2402                 break;
2403         case WLAN_TDLS_DISCOVERY_REQUEST:
2404                 tf->category = WLAN_CATEGORY_TDLS;
2405                 tf->action_code = WLAN_TDLS_DISCOVERY_REQUEST;
2406
2407                 skb_put(skb, sizeof(tf->u.discover_req));
2408                 tf->u.discover_req.dialog_token = dialog_token;
2409                 break;
2410         default:
2411                 return -EINVAL;
2412         }
2413
2414         return 0;
2415 }
2416
2417 static int
2418 ieee80211_prep_tdls_direct(struct wiphy *wiphy, struct net_device *dev,
2419                            u8 *peer, u8 action_code, u8 dialog_token,
2420                            u16 status_code, struct sk_buff *skb)
2421 {
2422         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2423         struct ieee80211_mgmt *mgmt;
2424
2425         mgmt = (void *)skb_put(skb, 24);
2426         memset(mgmt, 0, 24);
2427         memcpy(mgmt->da, peer, ETH_ALEN);
2428         memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
2429         memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN);
2430
2431         mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
2432                                           IEEE80211_STYPE_ACTION);
2433
2434         switch (action_code) {
2435         case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2436                 skb_put(skb, 1 + sizeof(mgmt->u.action.u.tdls_discover_resp));
2437                 mgmt->u.action.category = WLAN_CATEGORY_PUBLIC;
2438                 mgmt->u.action.u.tdls_discover_resp.action_code =
2439                         WLAN_PUB_ACTION_TDLS_DISCOVER_RES;
2440                 mgmt->u.action.u.tdls_discover_resp.dialog_token =
2441                         dialog_token;
2442                 mgmt->u.action.u.tdls_discover_resp.capability =
2443                         cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2444
2445                 ieee80211_add_srates_ie(&sdata->vif, skb);
2446                 ieee80211_add_ext_srates_ie(&sdata->vif, skb);
2447                 ieee80211_tdls_add_ext_capab(skb);
2448                 break;
2449         default:
2450                 return -EINVAL;
2451         }
2452
2453         return 0;
2454 }
2455
2456 static int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
2457                                u8 *peer, u8 action_code, u8 dialog_token,
2458                                u16 status_code, const u8 *extra_ies,
2459                                size_t extra_ies_len)
2460 {
2461         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2462         struct ieee80211_local *local = sdata->local;
2463         struct ieee80211_tx_info *info;
2464         struct sk_buff *skb = NULL;
2465         bool send_direct;
2466         int ret;
2467
2468         if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
2469                 return -ENOTSUPP;
2470
2471         /* make sure we are in managed mode, and associated */
2472         if (sdata->vif.type != NL80211_IFTYPE_STATION ||
2473             !sdata->u.mgd.associated)
2474                 return -EINVAL;
2475
2476 #ifdef CONFIG_MAC80211_VERBOSE_TDLS_DEBUG
2477         printk(KERN_DEBUG "TDLS mgmt action %d peer %pM\n", action_code, peer);
2478 #endif
2479
2480         skb = dev_alloc_skb(local->hw.extra_tx_headroom +
2481                             max(sizeof(struct ieee80211_mgmt),
2482                                 sizeof(struct ieee80211_tdls_data)) +
2483                             50 + /* supported rates */
2484                             7 + /* ext capab */
2485                             extra_ies_len +
2486                             sizeof(struct ieee80211_tdls_lnkie));
2487         if (!skb)
2488                 return -ENOMEM;
2489
2490         info = IEEE80211_SKB_CB(skb);
2491         skb_reserve(skb, local->hw.extra_tx_headroom);
2492
2493         switch (action_code) {
2494         case WLAN_TDLS_SETUP_REQUEST:
2495         case WLAN_TDLS_SETUP_RESPONSE:
2496         case WLAN_TDLS_SETUP_CONFIRM:
2497         case WLAN_TDLS_TEARDOWN:
2498         case WLAN_TDLS_DISCOVERY_REQUEST:
2499                 ret = ieee80211_prep_tdls_encap_data(wiphy, dev, peer,
2500                                                      action_code, dialog_token,
2501                                                      status_code, skb);
2502                 send_direct = false;
2503                 break;
2504         case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2505                 ret = ieee80211_prep_tdls_direct(wiphy, dev, peer, action_code,
2506                                                  dialog_token, status_code,
2507                                                  skb);
2508                 send_direct = true;
2509                 break;
2510         default:
2511                 ret = -ENOTSUPP;
2512                 break;
2513         }
2514
2515         if (ret < 0)
2516                 goto fail;
2517
2518         if (extra_ies_len)
2519                 memcpy(skb_put(skb, extra_ies_len), extra_ies, extra_ies_len);
2520
2521         /* the TDLS link IE is always added last */
2522         switch (action_code) {
2523         case WLAN_TDLS_SETUP_REQUEST:
2524         case WLAN_TDLS_SETUP_CONFIRM:
2525         case WLAN_TDLS_TEARDOWN:
2526         case WLAN_TDLS_DISCOVERY_REQUEST:
2527                 /* we are the initiator */
2528                 ieee80211_tdls_add_link_ie(skb, sdata->vif.addr, peer,
2529                                            sdata->u.mgd.bssid);
2530                 break;
2531         case WLAN_TDLS_SETUP_RESPONSE:
2532         case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2533                 /* we are the responder */
2534                 ieee80211_tdls_add_link_ie(skb, peer, sdata->vif.addr,
2535                                            sdata->u.mgd.bssid);
2536                 break;
2537         default:
2538                 ret = -ENOTSUPP;
2539                 goto fail;
2540         }
2541
2542         if (send_direct) {
2543                 ieee80211_tx_skb(sdata, skb);
2544                 return 0;
2545         }
2546
2547         /*
2548          * According to 802.11z: Setup req/resp are sent in AC_BK, otherwise
2549          * we should default to AC_VI.
2550          */
2551         switch (action_code) {
2552         case WLAN_TDLS_SETUP_REQUEST:
2553         case WLAN_TDLS_SETUP_RESPONSE:
2554                 skb_set_queue_mapping(skb, IEEE80211_AC_BK);
2555                 skb->priority = 2;
2556                 break;
2557         default:
2558                 skb_set_queue_mapping(skb, IEEE80211_AC_VI);
2559                 skb->priority = 5;
2560                 break;
2561         }
2562
2563         /* disable bottom halves when entering the Tx path */
2564         local_bh_disable();
2565         ret = ieee80211_subif_start_xmit(skb, dev);
2566         local_bh_enable();
2567
2568         return ret;
2569
2570 fail:
2571         dev_kfree_skb(skb);
2572         return ret;
2573 }
2574
2575 static int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
2576                                u8 *peer, enum nl80211_tdls_operation oper)
2577 {
2578         struct sta_info *sta;
2579         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2580
2581         if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
2582                 return -ENOTSUPP;
2583
2584         if (sdata->vif.type != NL80211_IFTYPE_STATION)
2585                 return -EINVAL;
2586
2587 #ifdef CONFIG_MAC80211_VERBOSE_TDLS_DEBUG
2588         printk(KERN_DEBUG "TDLS oper %d peer %pM\n", oper, peer);
2589 #endif
2590
2591         switch (oper) {
2592         case NL80211_TDLS_ENABLE_LINK:
2593                 rcu_read_lock();
2594                 sta = sta_info_get(sdata, peer);
2595                 if (!sta) {
2596                         rcu_read_unlock();
2597                         return -ENOLINK;
2598                 }
2599
2600                 set_sta_flag(sta, WLAN_STA_TDLS_PEER_AUTH);
2601                 rcu_read_unlock();
2602                 break;
2603         case NL80211_TDLS_DISABLE_LINK:
2604                 return sta_info_destroy_addr(sdata, peer);
2605         case NL80211_TDLS_TEARDOWN:
2606         case NL80211_TDLS_SETUP:
2607         case NL80211_TDLS_DISCOVERY_REQ:
2608                 /* We don't support in-driver setup/teardown/discovery */
2609                 return -ENOTSUPP;
2610         default:
2611                 return -ENOTSUPP;
2612         }
2613
2614         return 0;
2615 }
2616
2617 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
2618                                   const u8 *peer, u64 *cookie)
2619 {
2620         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2621         struct ieee80211_local *local = sdata->local;
2622         struct ieee80211_qos_hdr *nullfunc;
2623         struct sk_buff *skb;
2624         int size = sizeof(*nullfunc);
2625         __le16 fc;
2626         bool qos;
2627         struct ieee80211_tx_info *info;
2628         struct sta_info *sta;
2629
2630         rcu_read_lock();
2631         sta = sta_info_get(sdata, peer);
2632         if (sta) {
2633                 qos = test_sta_flag(sta, WLAN_STA_WME);
2634                 rcu_read_unlock();
2635         } else {
2636                 rcu_read_unlock();
2637                 return -ENOLINK;
2638         }
2639
2640         if (qos) {
2641                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
2642                                  IEEE80211_STYPE_QOS_NULLFUNC |
2643                                  IEEE80211_FCTL_FROMDS);
2644         } else {
2645                 size -= 2;
2646                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
2647                                  IEEE80211_STYPE_NULLFUNC |
2648                                  IEEE80211_FCTL_FROMDS);
2649         }
2650
2651         skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
2652         if (!skb)
2653                 return -ENOMEM;
2654
2655         skb->dev = dev;
2656
2657         skb_reserve(skb, local->hw.extra_tx_headroom);
2658
2659         nullfunc = (void *) skb_put(skb, size);
2660         nullfunc->frame_control = fc;
2661         nullfunc->duration_id = 0;
2662         memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
2663         memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
2664         memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
2665         nullfunc->seq_ctrl = 0;
2666
2667         info = IEEE80211_SKB_CB(skb);
2668
2669         info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
2670                        IEEE80211_TX_INTFL_NL80211_FRAME_TX;
2671
2672         skb_set_queue_mapping(skb, IEEE80211_AC_VO);
2673         skb->priority = 7;
2674         if (qos)
2675                 nullfunc->qos_ctrl = cpu_to_le16(7);
2676
2677         local_bh_disable();
2678         ieee80211_xmit(sdata, skb);
2679         local_bh_enable();
2680
2681         *cookie = (unsigned long) skb;
2682         return 0;
2683 }
2684
2685 static struct ieee80211_channel *
2686 ieee80211_wiphy_get_channel(struct wiphy *wiphy)
2687 {
2688         struct ieee80211_local *local = wiphy_priv(wiphy);
2689
2690         return local->oper_channel;
2691 }
2692
2693 struct cfg80211_ops mac80211_config_ops = {
2694         .add_virtual_intf = ieee80211_add_iface,
2695         .del_virtual_intf = ieee80211_del_iface,
2696         .change_virtual_intf = ieee80211_change_iface,
2697         .add_key = ieee80211_add_key,
2698         .del_key = ieee80211_del_key,
2699         .get_key = ieee80211_get_key,
2700         .set_default_key = ieee80211_config_default_key,
2701         .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
2702         .add_beacon = ieee80211_add_beacon,
2703         .set_beacon = ieee80211_set_beacon,
2704         .del_beacon = ieee80211_del_beacon,
2705         .add_station = ieee80211_add_station,
2706         .del_station = ieee80211_del_station,
2707         .change_station = ieee80211_change_station,
2708         .get_station = ieee80211_get_station,
2709         .dump_station = ieee80211_dump_station,
2710         .dump_survey = ieee80211_dump_survey,
2711 #ifdef CONFIG_MAC80211_MESH
2712         .add_mpath = ieee80211_add_mpath,
2713         .del_mpath = ieee80211_del_mpath,
2714         .change_mpath = ieee80211_change_mpath,
2715         .get_mpath = ieee80211_get_mpath,
2716         .dump_mpath = ieee80211_dump_mpath,
2717         .update_mesh_config = ieee80211_update_mesh_config,
2718         .get_mesh_config = ieee80211_get_mesh_config,
2719         .join_mesh = ieee80211_join_mesh,
2720         .leave_mesh = ieee80211_leave_mesh,
2721 #endif
2722         .change_bss = ieee80211_change_bss,
2723         .set_txq_params = ieee80211_set_txq_params,
2724         .set_channel = ieee80211_set_channel,
2725         .suspend = ieee80211_suspend,
2726         .resume = ieee80211_resume,
2727         .scan = ieee80211_scan,
2728         .sched_scan_start = ieee80211_sched_scan_start,
2729         .sched_scan_stop = ieee80211_sched_scan_stop,
2730         .auth = ieee80211_auth,
2731         .assoc = ieee80211_assoc,
2732         .deauth = ieee80211_deauth,
2733         .disassoc = ieee80211_disassoc,
2734         .join_ibss = ieee80211_join_ibss,
2735         .leave_ibss = ieee80211_leave_ibss,
2736         .set_wiphy_params = ieee80211_set_wiphy_params,
2737         .set_tx_power = ieee80211_set_tx_power,
2738         .get_tx_power = ieee80211_get_tx_power,
2739         .set_wds_peer = ieee80211_set_wds_peer,
2740         .rfkill_poll = ieee80211_rfkill_poll,
2741         CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
2742         CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
2743         .set_power_mgmt = ieee80211_set_power_mgmt,
2744         .set_bitrate_mask = ieee80211_set_bitrate_mask,
2745         .remain_on_channel = ieee80211_remain_on_channel,
2746         .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
2747         .mgmt_tx = ieee80211_mgmt_tx,
2748         .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
2749         .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
2750         .mgmt_frame_register = ieee80211_mgmt_frame_register,
2751         .set_antenna = ieee80211_set_antenna,
2752         .get_antenna = ieee80211_get_antenna,
2753         .set_ringparam = ieee80211_set_ringparam,
2754         .get_ringparam = ieee80211_get_ringparam,
2755         .set_rekey_data = ieee80211_set_rekey_data,
2756         .tdls_oper = ieee80211_tdls_oper,
2757         .tdls_mgmt = ieee80211_tdls_mgmt,
2758         .probe_client = ieee80211_probe_client,
2759         .get_channel = ieee80211_wiphy_get_channel,
2760         .set_noack_map = ieee80211_set_noack_map,
2761 };