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 void sta_set_rate_info_tx(struct sta_info *sta,
 340                           const struct ieee80211_tx_rate *rate,
 341                           struct rate_info *rinfo)
 342 {
 343         rinfo->flags = 0;
 344         if (rate->flags & IEEE80211_TX_RC_MCS)
 345                 rinfo->flags |= RATE_INFO_FLAGS_MCS;
 346         if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 347                 rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 348         if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
 349                 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
 350         rate_idx_to_bitrate(rinfo, sta, rate->idx);
 351 }
 352
 353 static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
 354 {
 355         struct ieee80211_sub_if_data *sdata = sta->sdata;
 356         struct timespec uptime;
 357
 358         sinfo->generation = sdata->local->sta_generation;
 359
 360         sinfo->filled = STATION_INFO_INACTIVE_TIME |
 361                         STATION_INFO_RX_BYTES |
 362                         STATION_INFO_TX_BYTES |
 363                         STATION_INFO_RX_PACKETS |
 364                         STATION_INFO_TX_PACKETS |
 365                         STATION_INFO_TX_RETRIES |
 366                         STATION_INFO_TX_FAILED |
 367                         STATION_INFO_TX_BITRATE |
 368                         STATION_INFO_RX_BITRATE |
 369                         STATION_INFO_RX_DROP_MISC |
 370                         STATION_INFO_BSS_PARAM |
 371                         STATION_INFO_CONNECTED_TIME |
 372                         STATION_INFO_STA_FLAGS |
 373                         STATION_INFO_BEACON_LOSS_COUNT;
 374
 375         do_posix_clock_monotonic_gettime(&uptime);
 376         sinfo->connected_time = uptime.tv_sec - sta->last_connected;
 377
 378         sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx);
 379         sinfo->rx_bytes = sta->rx_bytes;
 380         sinfo->tx_bytes = sta->tx_bytes;
 381         sinfo->rx_packets = sta->rx_packets;
 382         sinfo->tx_packets = sta->tx_packets;
 383         sinfo->tx_retries = sta->tx_retry_count;
 384         sinfo->tx_failed = sta->tx_retry_failed;
 385         sinfo->rx_dropped_misc = sta->rx_dropped;
 386         sinfo->beacon_loss_count = sta->beacon_loss_count;
 387
 388         if ((sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) ||
 389             (sta->local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)) {
 390                 sinfo->filled |= STATION_INFO_SIGNAL | STATION_INFO_SIGNAL_AVG;
 391                 sinfo->signal = (s8)sta->last_signal;
 392                 sinfo->signal_avg = (s8) -ewma_read(&sta->avg_signal);
 393         }
 394
 395         sta_set_rate_info_tx(sta, &sta->last_tx_rate, &sinfo->txrate);
 396
 397         sinfo->rxrate.flags = 0;
 398         if (sta->last_rx_rate_flag & RX_FLAG_HT)
 399                 sinfo->rxrate.flags |= RATE_INFO_FLAGS_MCS;
 400         if (sta->last_rx_rate_flag & RX_FLAG_40MHZ)
 401                 sinfo->rxrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 402         if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI)
 403                 sinfo->rxrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
 404         rate_idx_to_bitrate(&sinfo->rxrate, sta, sta->last_rx_rate_idx);
 405
 406         if (ieee80211_vif_is_mesh(&sdata->vif)) {
 407 #ifdef CONFIG_MAC80211_MESH
 408                 sinfo->filled |= STATION_INFO_LLID |
 409                                  STATION_INFO_PLID |
 410                                  STATION_INFO_PLINK_STATE;
 411
 412                 sinfo->llid = le16_to_cpu(sta->llid);
 413                 sinfo->plid = le16_to_cpu(sta->plid);
 414                 sinfo->plink_state = sta->plink_state;
 415                 if (test_sta_flag(sta, WLAN_STA_TOFFSET_KNOWN)) {
 416                         sinfo->filled |= STATION_INFO_T_OFFSET;
 417                         sinfo->t_offset = sta->t_offset;
 418                 }
 419 #endif
 420         }
 421
 422         sinfo->bss_param.flags = 0;
 423         if (sdata->vif.bss_conf.use_cts_prot)
 424                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_CTS_PROT;
 425         if (sdata->vif.bss_conf.use_short_preamble)
 426                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_PREAMBLE;
 427         if (sdata->vif.bss_conf.use_short_slot)
 428                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME;
 429         sinfo->bss_param.dtim_period = sdata->local->hw.conf.ps_dtim_period;
 430         sinfo->bss_param.beacon_interval = sdata->vif.bss_conf.beacon_int;
 431
 432         sinfo->sta_flags.set = 0;
 433         sinfo->sta_flags.mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
 434                                 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
 435                                 BIT(NL80211_STA_FLAG_WME) |
 436                                 BIT(NL80211_STA_FLAG_MFP) |
 437                                 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
 438                                 BIT(NL80211_STA_FLAG_TDLS_PEER);
 439         if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
 440                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHORIZED);
 441         if (test_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE))
 442                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
 443         if (test_sta_flag(sta, WLAN_STA_WME))
 444                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_WME);
 445         if (test_sta_flag(sta, WLAN_STA_MFP))
 446                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_MFP);
 447         if (test_sta_flag(sta, WLAN_STA_AUTH))
 448                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHENTICATED);
 449         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER))
 450                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_TDLS_PEER);
 451 }
 452
 453
 454 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
 455                                  int idx, u8 *mac, struct station_info *sinfo)
 456 {
 457         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 458         struct sta_info *sta;
 459         int ret = -ENOENT;
 460
 461         rcu_read_lock();
 462
 463         sta = sta_info_get_by_idx(sdata, idx);
 464         if (sta) {
 465                 ret = 0;
 466                 memcpy(mac, sta->sta.addr, ETH_ALEN);
 467                 sta_set_sinfo(sta, sinfo);
 468         }
 469
 470         rcu_read_unlock();
 471
 472         return ret;
 473 }
 474
 475 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
 476                                  int idx, struct survey_info *survey)
 477 {
 478         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 479
 480         return drv_get_survey(local, idx, survey);
 481 }
 482
 483 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 484                                  u8 *mac, struct station_info *sinfo)
 485 {
 486         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 487         struct sta_info *sta;
 488         int ret = -ENOENT;
 489
 490         rcu_read_lock();
 491
 492         sta = sta_info_get_bss(sdata, mac);
 493         if (sta) {
 494                 ret = 0;
 495                 sta_set_sinfo(sta, sinfo);
 496         }
 497
 498         rcu_read_unlock();
 499
 500         return ret;
 501 }
 502
 503 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
 504                                     const u8 *resp, size_t resp_len)
 505 {
 506         struct sk_buff *new, *old;
 507
 508         if (!resp || !resp_len)
 509                 return 1;
 510
 511         old = rtnl_dereference(sdata->u.ap.probe_resp);
 512
 513         new = dev_alloc_skb(resp_len);
 514         if (!new)
 515                 return -ENOMEM;
 516
 517         memcpy(skb_put(new, resp_len), resp, resp_len);
 518
 519         rcu_assign_pointer(sdata->u.ap.probe_resp, new);
 520         if (old) {
 521                 /* TODO: use call_rcu() */
 522                 synchronize_rcu();
 523                 dev_kfree_skb(old);
 524         }
 525
 526         return 0;
 527 }
 528
 529 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
 530                                    struct cfg80211_beacon_data *params)
 531 {
 532         struct beacon_data *new, *old;
 533         int new_head_len, new_tail_len;
 534         int size, err;
 535         u32 changed = BSS_CHANGED_BEACON;
 536
 537         old = rtnl_dereference(sdata->u.ap.beacon);
 538
 539         /* Need to have a beacon head if we don't have one yet */
 540         if (!params->head && !old)
 541                 return -EINVAL;
 542
 543         /* new or old head? */
 544         if (params->head)
 545                 new_head_len = params->head_len;
 546         else
 547                 new_head_len = old->head_len;
 548
 549         /* new or old tail? */
 550         if (params->tail || !old)
 551                 /* params->tail_len will be zero for !params->tail */
 552                 new_tail_len = params->tail_len;
 553         else
 554                 new_tail_len = old->tail_len;
 555
 556         size = sizeof(*new) + new_head_len + new_tail_len;
 557
 558         new = kzalloc(size, GFP_KERNEL);
 559         if (!new)
 560                 return -ENOMEM;
 561
 562         /* start filling the new info now */
 563
 564         /*
 565          * pointers go into the block we allocated,
 566          * memory is | beacon_data | head | tail |
 567          */
 568         new->head = ((u8 *) new) + sizeof(*new);
 569         new->tail = new->head + new_head_len;
 570         new->head_len = new_head_len;
 571         new->tail_len = new_tail_len;
 572
 573         /* copy in head */
 574         if (params->head)
 575                 memcpy(new->head, params->head, new_head_len);
 576         else
 577                 memcpy(new->head, old->head, new_head_len);
 578
 579         /* copy in optional tail */
 580         if (params->tail)
 581                 memcpy(new->tail, params->tail, new_tail_len);
 582         else
 583                 if (old)
 584                         memcpy(new->tail, old->tail, new_tail_len);
 585
 586         err = ieee80211_set_probe_resp(sdata, params->probe_resp,
 587                                        params->probe_resp_len);
 588         if (err < 0)
 589                 return err;
 590         if (err == 0)
 591                 changed |= BSS_CHANGED_AP_PROBE_RESP;
 592
 593         rcu_assign_pointer(sdata->u.ap.beacon, new);
 594
 595         if (old)
 596                 kfree_rcu(old, rcu_head);
 597
 598         return changed;
 599 }
 600
 601 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
 602                               struct cfg80211_ap_settings *params)
 603 {
 604         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 605         struct beacon_data *old;
 606         struct ieee80211_sub_if_data *vlan;
 607         u32 changed = BSS_CHANGED_BEACON_INT |
 608                       BSS_CHANGED_BEACON_ENABLED |
 609                       BSS_CHANGED_BEACON |
 610                       BSS_CHANGED_SSID;
 611         int err;
 612
 613         old = rtnl_dereference(sdata->u.ap.beacon);
 614         if (old)
 615                 return -EALREADY;
 616
 617         /*
 618          * Apply control port protocol, this allows us to
 619          * not encrypt dynamic WEP control frames.
 620          */
 621         sdata->control_port_protocol = params->crypto.control_port_ethertype;
 622         sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
 623         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
 624                 vlan->control_port_protocol =
 625                         params->crypto.control_port_ethertype;
 626                 vlan->control_port_no_encrypt =
 627                         params->crypto.control_port_no_encrypt;
 628         }
 629
 630         sdata->vif.bss_conf.beacon_int = params->beacon_interval;
 631         sdata->vif.bss_conf.dtim_period = params->dtim_period;
 632
 633         sdata->vif.bss_conf.ssid_len = params->ssid_len;
 634         if (params->ssid_len)
 635                 memcpy(sdata->vif.bss_conf.ssid, params->ssid,
 636                        params->ssid_len);
 637         sdata->vif.bss_conf.hidden_ssid =
 638                 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
 639
 640         err = ieee80211_assign_beacon(sdata, &params->beacon);
 641         if (err < 0)
 642                 return err;
 643         changed |= err;
 644
 645         ieee80211_bss_info_change_notify(sdata, changed);
 646
 647         return 0;
 648 }
 649
 650 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
 651                                    struct cfg80211_beacon_data *params)
 652 {
 653         struct ieee80211_sub_if_data *sdata;
 654         struct beacon_data *old;
 655         int err;
 656
 657         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 658
 659         old = rtnl_dereference(sdata->u.ap.beacon);
 660         if (!old)
 661                 return -ENOENT;
 662
 663         err = ieee80211_assign_beacon(sdata, params);
 664         if (err < 0)
 665                 return err;
 666         ieee80211_bss_info_change_notify(sdata, err);
 667         return 0;
 668 }
 669
 670 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
 671 {
 672         struct ieee80211_sub_if_data *sdata;
 673         struct beacon_data *old;
 674
 675         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 676
 677         old = rtnl_dereference(sdata->u.ap.beacon);
 678         if (!old)
 679                 return -ENOENT;
 680
 681         RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
 682
 683         kfree_rcu(old, rcu_head);
 684
 685         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
 686
 687         return 0;
 688 }
 689
 690 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
 691 struct iapp_layer2_update {
 692         u8 da[ETH_ALEN];        /* broadcast */
 693         u8 sa[ETH_ALEN];        /* STA addr */
 694         __be16 len;             /* 6 */
 695         u8 dsap;                /* 0 */
 696         u8 ssap;                /* 0 */
 697         u8 control;
 698         u8 xid_info[3];
 699 } __packed;
 700
 701 static void ieee80211_send_layer2_update(struct sta_info *sta)
 702 {
 703         struct iapp_layer2_update *msg;
 704         struct sk_buff *skb;
 705
 706         /* Send Level 2 Update Frame to update forwarding tables in layer 2
 707          * bridge devices */
 708
 709         skb = dev_alloc_skb(sizeof(*msg));
 710         if (!skb)
 711                 return;
 712         msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
 713
 714         /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
 715          * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
 716
 717         memset(msg->da, 0xff, ETH_ALEN);
 718         memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
 719         msg->len = htons(6);
 720         msg->dsap = 0;
 721         msg->ssap = 0x01;       /* NULL LSAP, CR Bit: Response */
 722         msg->control = 0xaf;    /* XID response lsb.1111F101.
 723                                  * F=0 (no poll command; unsolicited frame) */
 724         msg->xid_info[0] = 0x81;        /* XID format identifier */
 725         msg->xid_info[1] = 1;   /* LLC types/classes: Type 1 LLC */
 726         msg->xid_info[2] = 0;   /* XID sender's receive window size (RW) */
 727
 728         skb->dev = sta->sdata->dev;
 729         skb->protocol = eth_type_trans(skb, sta->sdata->dev);
 730         memset(skb->cb, 0, sizeof(skb->cb));
 731         netif_rx_ni(skb);
 732 }
 733
 734 static int sta_apply_parameters(struct ieee80211_local *local,
 735                                 struct sta_info *sta,
 736                                 struct station_parameters *params)
 737 {
 738         int ret = 0;
 739         u32 rates;
 740         int i, j;
 741         struct ieee80211_supported_band *sband;
 742         struct ieee80211_sub_if_data *sdata = sta->sdata;
 743         u32 mask, set;
 744
 745         sband = local->hw.wiphy->bands[local->oper_channel->band];
 746
 747         mask = params->sta_flags_mask;
 748         set = params->sta_flags_set;
 749
 750         /*
 751          * In mesh mode, we can clear AUTHENTICATED flag but must
 752          * also make ASSOCIATED follow appropriately for the driver
 753          * API. See also below, after AUTHORIZED changes.
 754          */
 755         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) {
 756                 /* cfg80211 should not allow this in non-mesh modes */
 757                 if (WARN_ON(!ieee80211_vif_is_mesh(&sdata->vif)))
 758                         return -EINVAL;
 759
 760                 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
 761                     !test_sta_flag(sta, WLAN_STA_AUTH)) {
 762                         ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
 763                         if (ret)
 764                                 return ret;
 765                         ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
 766                         if (ret)
 767                                 return ret;
 768                 }
 769         }
 770
 771         if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
 772                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
 773                         ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
 774                 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
 775                         ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
 776                 if (ret)
 777                         return ret;
 778         }
 779
 780         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) {
 781                 /* cfg80211 should not allow this in non-mesh modes */
 782                 if (WARN_ON(!ieee80211_vif_is_mesh(&sdata->vif)))
 783                         return -EINVAL;
 784
 785                 if (!(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
 786                     test_sta_flag(sta, WLAN_STA_AUTH)) {
 787                         ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
 788                         if (ret)
 789                                 return ret;
 790                         ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
 791                         if (ret)
 792                                 return ret;
 793                 }
 794         }
 795
 796
 797         if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
 798                 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
 799                         set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
 800                 else
 801                         clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
 802         }
 803
 804         if (mask & BIT(NL80211_STA_FLAG_WME)) {
 805                 if (set & BIT(NL80211_STA_FLAG_WME)) {
 806                         set_sta_flag(sta, WLAN_STA_WME);
 807                         sta->sta.wme = true;
 808                 } else {
 809                         clear_sta_flag(sta, WLAN_STA_WME);
 810                         sta->sta.wme = false;
 811                 }
 812         }
 813
 814         if (mask & BIT(NL80211_STA_FLAG_MFP)) {
 815                 if (set & BIT(NL80211_STA_FLAG_MFP))
 816                         set_sta_flag(sta, WLAN_STA_MFP);
 817                 else
 818                         clear_sta_flag(sta, WLAN_STA_MFP);
 819         }
 820
 821         if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
 822                 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
 823                         set_sta_flag(sta, WLAN_STA_TDLS_PEER);
 824                 else
 825                         clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
 826         }
 827
 828         if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
 829                 sta->sta.uapsd_queues = params->uapsd_queues;
 830                 sta->sta.max_sp = params->max_sp;
 831         }
 832
 833         /*
 834          * cfg80211 validates this (1-2007) and allows setting the AID
 835          * only when creating a new station entry
 836          */
 837         if (params->aid)
 838                 sta->sta.aid = params->aid;
 839
 840         /*
 841          * FIXME: updating the following information is racy when this
 842          *        function is called from ieee80211_change_station().
 843          *        However, all this information should be static so
 844          *        maybe we should just reject attemps to change it.
 845          */
 846
 847         if (params->listen_interval >= 0)
 848                 sta->listen_interval = params->listen_interval;
 849
 850         if (params->supported_rates) {
 851                 rates = 0;
 852
 853                 for (i = 0; i < params->supported_rates_len; i++) {
 854                         int rate = (params->supported_rates[i] & 0x7f) * 5;
 855                         for (j = 0; j < sband->n_bitrates; j++) {
 856                                 if (sband->bitrates[j].bitrate == rate)
 857                                         rates |= BIT(j);
 858                         }
 859                 }
 860                 sta->sta.supp_rates[local->oper_channel->band] = rates;
 861         }
 862
 863         if (params->ht_capa)
 864                 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
 865                                                   params->ht_capa,
 866                                                   &sta->sta.ht_cap);
 867
 868         if (ieee80211_vif_is_mesh(&sdata->vif)) {
 869 #ifdef CONFIG_MAC80211_MESH
 870                 if (sdata->u.mesh.security & IEEE80211_MESH_SEC_SECURED)
 871                         switch (params->plink_state) {
 872                         case NL80211_PLINK_LISTEN:
 873                         case NL80211_PLINK_ESTAB:
 874                         case NL80211_PLINK_BLOCKED:
 875                                 sta->plink_state = params->plink_state;
 876                                 break;
 877                         default:
 878                                 /*  nothing  */
 879                                 break;
 880                         }
 881                 else
 882                         switch (params->plink_action) {
 883                         case PLINK_ACTION_OPEN:
 884                                 mesh_plink_open(sta);
 885                                 break;
 886                         case PLINK_ACTION_BLOCK:
 887                                 mesh_plink_block(sta);
 888                                 break;
 889                         }
 890 #endif
 891         }
 892
 893         return 0;
 894 }
 895
 896 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
 897                                  u8 *mac, struct station_parameters *params)
 898 {
 899         struct ieee80211_local *local = wiphy_priv(wiphy);
 900         struct sta_info *sta;
 901         struct ieee80211_sub_if_data *sdata;
 902         int err;
 903         int layer2_update;
 904
 905         if (params->vlan) {
 906                 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
 907
 908                 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
 909                     sdata->vif.type != NL80211_IFTYPE_AP)
 910                         return -EINVAL;
 911         } else
 912                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 913
 914         if (compare_ether_addr(mac, sdata->vif.addr) == 0)
 915                 return -EINVAL;
 916
 917         if (is_multicast_ether_addr(mac))
 918                 return -EINVAL;
 919
 920         sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
 921         if (!sta)
 922                 return -ENOMEM;
 923
 924         sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
 925         sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC);
 926
 927         err = sta_apply_parameters(local, sta, params);
 928         if (err) {
 929                 sta_info_free(local, sta);
 930                 return err;
 931         }
 932
 933         /*
 934          * for TDLS, rate control should be initialized only when supported
 935          * rates are known.
 936          */
 937         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER))
 938                 rate_control_rate_init(sta);
 939
 940         layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
 941                 sdata->vif.type == NL80211_IFTYPE_AP;
 942
 943         err = sta_info_insert_rcu(sta);
 944         if (err) {
 945                 rcu_read_unlock();
 946                 return err;
 947         }
 948
 949         if (layer2_update)
 950                 ieee80211_send_layer2_update(sta);
 951
 952         rcu_read_unlock();
 953
 954         return 0;
 955 }
 956
 957 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
 958                                  u8 *mac)
 959 {
 960         struct ieee80211_local *local = wiphy_priv(wiphy);
 961         struct ieee80211_sub_if_data *sdata;
 962
 963         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 964
 965         if (mac)
 966                 return sta_info_destroy_addr_bss(sdata, mac);
 967
 968         sta_info_flush(local, sdata);
 969         return 0;
 970 }
 971
 972 static int ieee80211_change_station(struct wiphy *wiphy,
 973                                     struct net_device *dev,
 974                                     u8 *mac,
 975                                     struct station_parameters *params)
 976 {
 977         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 978         struct ieee80211_local *local = wiphy_priv(wiphy);
 979         struct sta_info *sta;
 980         struct ieee80211_sub_if_data *vlansdata;
 981         int err;
 982
 983         mutex_lock(&local->sta_mtx);
 984
 985         sta = sta_info_get_bss(sdata, mac);
 986         if (!sta) {
 987                 mutex_unlock(&local->sta_mtx);
 988                 return -ENOENT;
 989         }
 990
 991         /* in station mode, supported rates are only valid with TDLS */
 992         if (sdata->vif.type == NL80211_IFTYPE_STATION &&
 993             params->supported_rates &&
 994             !test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
 995                 mutex_unlock(&local->sta_mtx);
 996                 return -EINVAL;
 997         }
 998
 999         if (params->vlan && params->vlan != sta->sdata->dev) {
1000                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1001
1002                 if (vlansdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1003                     vlansdata->vif.type != NL80211_IFTYPE_AP) {
1004                         mutex_unlock(&local->sta_mtx);
1005                         return -EINVAL;
1006                 }
1007
1008                 if (params->vlan->ieee80211_ptr->use_4addr) {
1009                         if (vlansdata->u.vlan.sta) {
1010                                 mutex_unlock(&local->sta_mtx);
1011                                 return -EBUSY;
1012                         }
1013
1014                         rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1015                 }
1016
1017                 sta->sdata = vlansdata;
1018                 ieee80211_send_layer2_update(sta);
1019         }
1020
1021         err = sta_apply_parameters(local, sta, params);
1022         if (err) {
1023                 mutex_unlock(&local->sta_mtx);
1024                 return err;
1025         }
1026
1027         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) && params->supported_rates)
1028                 rate_control_rate_init(sta);
1029
1030         mutex_unlock(&local->sta_mtx);
1031
1032         if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1033             params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED))
1034                 ieee80211_recalc_ps(local, -1);
1035
1036         return 0;
1037 }
1038
1039 #ifdef CONFIG_MAC80211_MESH
1040 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1041                                  u8 *dst, u8 *next_hop)
1042 {
1043         struct ieee80211_sub_if_data *sdata;
1044         struct mesh_path *mpath;
1045         struct sta_info *sta;
1046         int err;
1047
1048         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1049
1050         rcu_read_lock();
1051         sta = sta_info_get(sdata, next_hop);
1052         if (!sta) {
1053                 rcu_read_unlock();
1054                 return -ENOENT;
1055         }
1056
1057         err = mesh_path_add(dst, sdata);
1058         if (err) {
1059                 rcu_read_unlock();
1060                 return err;
1061         }
1062
1063         mpath = mesh_path_lookup(dst, sdata);
1064         if (!mpath) {
1065                 rcu_read_unlock();
1066                 return -ENXIO;
1067         }
1068         mesh_path_fix_nexthop(mpath, sta);
1069
1070         rcu_read_unlock();
1071         return 0;
1072 }
1073
1074 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1075                                  u8 *dst)
1076 {
1077         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1078
1079         if (dst)
1080                 return mesh_path_del(dst, sdata);
1081
1082         mesh_path_flush_by_iface(sdata);
1083         return 0;
1084 }
1085
1086 static int ieee80211_change_mpath(struct wiphy *wiphy,
1087                                     struct net_device *dev,
1088                                     u8 *dst, u8 *next_hop)
1089 {
1090         struct ieee80211_sub_if_data *sdata;
1091         struct mesh_path *mpath;
1092         struct sta_info *sta;
1093
1094         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1095
1096         rcu_read_lock();
1097
1098         sta = sta_info_get(sdata, next_hop);
1099         if (!sta) {
1100                 rcu_read_unlock();
1101                 return -ENOENT;
1102         }
1103
1104         mpath = mesh_path_lookup(dst, sdata);
1105         if (!mpath) {
1106                 rcu_read_unlock();
1107                 return -ENOENT;
1108         }
1109
1110         mesh_path_fix_nexthop(mpath, sta);
1111
1112         rcu_read_unlock();
1113         return 0;
1114 }
1115
1116 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1117                             struct mpath_info *pinfo)
1118 {
1119         struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1120
1121         if (next_hop_sta)
1122                 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1123         else
1124                 memset(next_hop, 0, ETH_ALEN);
1125
1126         pinfo->generation = mesh_paths_generation;
1127
1128         pinfo->filled = MPATH_INFO_FRAME_QLEN |
1129                         MPATH_INFO_SN |
1130                         MPATH_INFO_METRIC |
1131                         MPATH_INFO_EXPTIME |
1132                         MPATH_INFO_DISCOVERY_TIMEOUT |
1133                         MPATH_INFO_DISCOVERY_RETRIES |
1134                         MPATH_INFO_FLAGS;
1135
1136         pinfo->frame_qlen = mpath->frame_queue.qlen;
1137         pinfo->sn = mpath->sn;
1138         pinfo->metric = mpath->metric;
1139         if (time_before(jiffies, mpath->exp_time))
1140                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1141         pinfo->discovery_timeout =
1142                         jiffies_to_msecs(mpath->discovery_timeout);
1143         pinfo->discovery_retries = mpath->discovery_retries;
1144         pinfo->flags = 0;
1145         if (mpath->flags & MESH_PATH_ACTIVE)
1146                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1147         if (mpath->flags & MESH_PATH_RESOLVING)
1148                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1149         if (mpath->flags & MESH_PATH_SN_VALID)
1150                 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1151         if (mpath->flags & MESH_PATH_FIXED)
1152                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1153         if (mpath->flags & MESH_PATH_RESOLVING)
1154                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1155
1156         pinfo->flags = mpath->flags;
1157 }
1158
1159 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1160                                u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1161
1162 {
1163         struct ieee80211_sub_if_data *sdata;
1164         struct mesh_path *mpath;
1165
1166         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1167
1168         rcu_read_lock();
1169         mpath = mesh_path_lookup(dst, sdata);
1170         if (!mpath) {
1171                 rcu_read_unlock();
1172                 return -ENOENT;
1173         }
1174         memcpy(dst, mpath->dst, ETH_ALEN);
1175         mpath_set_pinfo(mpath, next_hop, pinfo);
1176         rcu_read_unlock();
1177         return 0;
1178 }
1179
1180 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1181                                  int idx, u8 *dst, u8 *next_hop,
1182                                  struct mpath_info *pinfo)
1183 {
1184         struct ieee80211_sub_if_data *sdata;
1185         struct mesh_path *mpath;
1186
1187         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1188
1189         rcu_read_lock();
1190         mpath = mesh_path_lookup_by_idx(idx, sdata);
1191         if (!mpath) {
1192                 rcu_read_unlock();
1193                 return -ENOENT;
1194         }
1195         memcpy(dst, mpath->dst, ETH_ALEN);
1196         mpath_set_pinfo(mpath, next_hop, pinfo);
1197         rcu_read_unlock();
1198         return 0;
1199 }
1200
1201 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1202                                 struct net_device *dev,
1203                                 struct mesh_config *conf)
1204 {
1205         struct ieee80211_sub_if_data *sdata;
1206         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1207
1208         memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1209         return 0;
1210 }
1211
1212 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1213 {
1214         return (mask >> (parm-1)) & 0x1;
1215 }
1216
1217 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1218                 const struct mesh_setup *setup)
1219 {
1220         u8 *new_ie;
1221         const u8 *old_ie;
1222         struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1223                                         struct ieee80211_sub_if_data, u.mesh);
1224
1225         /* allocate information elements */
1226         new_ie = NULL;
1227         old_ie = ifmsh->ie;
1228
1229         if (setup->ie_len) {
1230                 new_ie = kmemdup(setup->ie, setup->ie_len,
1231                                 GFP_KERNEL);
1232                 if (!new_ie)
1233                         return -ENOMEM;
1234         }
1235         ifmsh->ie_len = setup->ie_len;
1236         ifmsh->ie = new_ie;
1237         kfree(old_ie);
1238
1239         /* now copy the rest of the setup parameters */
1240         ifmsh->mesh_id_len = setup->mesh_id_len;
1241         memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1242         ifmsh->mesh_sp_id = setup->sync_method;
1243         ifmsh->mesh_pp_id = setup->path_sel_proto;
1244         ifmsh->mesh_pm_id = setup->path_metric;
1245         ifmsh->security = IEEE80211_MESH_SEC_NONE;
1246         if (setup->is_authenticated)
1247                 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1248         if (setup->is_secure)
1249                 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1250
1251         /* mcast rate setting in Mesh Node */
1252         memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1253                                                 sizeof(setup->mcast_rate));
1254
1255         return 0;
1256 }
1257
1258 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1259                                         struct net_device *dev, u32 mask,
1260                                         const struct mesh_config *nconf)
1261 {
1262         struct mesh_config *conf;
1263         struct ieee80211_sub_if_data *sdata;
1264         struct ieee80211_if_mesh *ifmsh;
1265
1266         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1267         ifmsh = &sdata->u.mesh;
1268
1269         /* Set the config options which we are interested in setting */
1270         conf = &(sdata->u.mesh.mshcfg);
1271         if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1272                 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1273         if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1274                 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1275         if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1276                 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1277         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1278                 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1279         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1280                 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1281         if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1282                 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1283         if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1284                 conf->dot11MeshTTL = nconf->element_ttl;
1285         if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask))
1286                 conf->auto_open_plinks = nconf->auto_open_plinks;
1287         if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
1288                 conf->dot11MeshNbrOffsetMaxNeighbor =
1289                         nconf->dot11MeshNbrOffsetMaxNeighbor;
1290         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1291                 conf->dot11MeshHWMPmaxPREQretries =
1292                         nconf->dot11MeshHWMPmaxPREQretries;
1293         if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1294                 conf->path_refresh_time = nconf->path_refresh_time;
1295         if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1296                 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1297         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1298                 conf->dot11MeshHWMPactivePathTimeout =
1299                         nconf->dot11MeshHWMPactivePathTimeout;
1300         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1301                 conf->dot11MeshHWMPpreqMinInterval =
1302                         nconf->dot11MeshHWMPpreqMinInterval;
1303         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1304                 conf->dot11MeshHWMPperrMinInterval =
1305                         nconf->dot11MeshHWMPperrMinInterval;
1306         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1307                            mask))
1308                 conf->dot11MeshHWMPnetDiameterTraversalTime =
1309                         nconf->dot11MeshHWMPnetDiameterTraversalTime;
1310         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1311                 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1312                 ieee80211_mesh_root_setup(ifmsh);
1313         }
1314         if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1315                 /* our current gate announcement implementation rides on root
1316                  * announcements, so require this ifmsh to also be a root node
1317                  * */
1318                 if (nconf->dot11MeshGateAnnouncementProtocol &&
1319                     !conf->dot11MeshHWMPRootMode) {
1320                         conf->dot11MeshHWMPRootMode = 1;
1321                         ieee80211_mesh_root_setup(ifmsh);
1322                 }
1323                 conf->dot11MeshGateAnnouncementProtocol =
1324                         nconf->dot11MeshGateAnnouncementProtocol;
1325         }
1326         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask)) {
1327                 conf->dot11MeshHWMPRannInterval =
1328                         nconf->dot11MeshHWMPRannInterval;
1329         }
1330         if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
1331                 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1332         if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
1333                 /* our RSSI threshold implementation is supported only for
1334                  * devices that report signal in dBm.
1335                  */
1336                 if (!(sdata->local->hw.flags & IEEE80211_HW_SIGNAL_DBM))
1337                         return -ENOTSUPP;
1338                 conf->rssi_threshold = nconf->rssi_threshold;
1339         }
1340         return 0;
1341 }
1342
1343 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1344                                const struct mesh_config *conf,
1345                                const struct mesh_setup *setup)
1346 {
1347         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1348         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1349         int err;
1350
1351         memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1352         err = copy_mesh_setup(ifmsh, setup);
1353         if (err)
1354                 return err;
1355         ieee80211_start_mesh(sdata);
1356
1357         return 0;
1358 }
1359
1360 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1361 {
1362         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1363
1364         ieee80211_stop_mesh(sdata);
1365
1366         return 0;
1367 }
1368 #endif
1369
1370 static int ieee80211_change_bss(struct wiphy *wiphy,
1371                                 struct net_device *dev,
1372                                 struct bss_parameters *params)
1373 {
1374         struct ieee80211_sub_if_data *sdata;
1375         u32 changed = 0;
1376
1377         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1378
1379         if (params->use_cts_prot >= 0) {
1380                 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1381                 changed |= BSS_CHANGED_ERP_CTS_PROT;
1382         }
1383         if (params->use_short_preamble >= 0) {
1384                 sdata->vif.bss_conf.use_short_preamble =
1385                         params->use_short_preamble;
1386                 changed |= BSS_CHANGED_ERP_PREAMBLE;
1387         }
1388
1389         if (!sdata->vif.bss_conf.use_short_slot &&
1390             sdata->local->hw.conf.channel->band == IEEE80211_BAND_5GHZ) {
1391                 sdata->vif.bss_conf.use_short_slot = true;
1392                 changed |= BSS_CHANGED_ERP_SLOT;
1393         }
1394
1395         if (params->use_short_slot_time >= 0) {
1396                 sdata->vif.bss_conf.use_short_slot =
1397                         params->use_short_slot_time;
1398                 changed |= BSS_CHANGED_ERP_SLOT;
1399         }
1400
1401         if (params->basic_rates) {
1402                 int i, j;
1403                 u32 rates = 0;
1404                 struct ieee80211_local *local = wiphy_priv(wiphy);
1405                 struct ieee80211_supported_band *sband =
1406                         wiphy->bands[local->oper_channel->band];
1407
1408                 for (i = 0; i < params->basic_rates_len; i++) {
1409                         int rate = (params->basic_rates[i] & 0x7f) * 5;
1410                         for (j = 0; j < sband->n_bitrates; j++) {
1411                                 if (sband->bitrates[j].bitrate == rate)
1412                                         rates |= BIT(j);
1413                         }
1414                 }
1415                 sdata->vif.bss_conf.basic_rates = rates;
1416                 changed |= BSS_CHANGED_BASIC_RATES;
1417         }
1418
1419         if (params->ap_isolate >= 0) {
1420                 if (params->ap_isolate)
1421                         sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1422                 else
1423                         sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1424         }
1425
1426         if (params->ht_opmode >= 0) {
1427                 sdata->vif.bss_conf.ht_operation_mode =
1428                         (u16) params->ht_opmode;
1429                 changed |= BSS_CHANGED_HT;
1430         }
1431
1432         ieee80211_bss_info_change_notify(sdata, changed);
1433
1434         return 0;
1435 }
1436
1437 static int ieee80211_set_txq_params(struct wiphy *wiphy,
1438                                     struct net_device *dev,
1439                                     struct ieee80211_txq_params *params)
1440 {
1441         struct ieee80211_local *local = wiphy_priv(wiphy);
1442         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1443         struct ieee80211_tx_queue_params p;
1444
1445         if (!local->ops->conf_tx)
1446                 return -EOPNOTSUPP;
1447
1448         if (local->hw.queues < IEEE80211_NUM_ACS)
1449                 return -EOPNOTSUPP;
1450
1451         memset(&p, 0, sizeof(p));
1452         p.aifs = params->aifs;
1453         p.cw_max = params->cwmax;
1454         p.cw_min = params->cwmin;
1455         p.txop = params->txop;
1456
1457         /*
1458          * Setting tx queue params disables u-apsd because it's only
1459          * called in master mode.
1460          */
1461         p.uapsd = false;
1462
1463         sdata->tx_conf[params->ac] = p;
1464         if (drv_conf_tx(local, sdata, params->ac, &p)) {
1465                 wiphy_debug(local->hw.wiphy,
1466                             "failed to set TX queue parameters for AC %d\n",
1467                             params->ac);
1468                 return -EINVAL;
1469         }
1470
1471         return 0;
1472 }
1473
1474 static int ieee80211_set_channel(struct wiphy *wiphy,
1475                                  struct net_device *netdev,
1476                                  struct ieee80211_channel *chan,
1477                                  enum nl80211_channel_type channel_type)
1478 {
1479         struct ieee80211_local *local = wiphy_priv(wiphy);
1480         struct ieee80211_sub_if_data *sdata = NULL;
1481         struct ieee80211_channel *old_oper;
1482         enum nl80211_channel_type old_oper_type;
1483         enum nl80211_channel_type old_vif_oper_type= NL80211_CHAN_NO_HT;
1484
1485         if (netdev)
1486                 sdata = IEEE80211_DEV_TO_SUB_IF(netdev);
1487
1488         switch (ieee80211_get_channel_mode(local, NULL)) {
1489         case CHAN_MODE_HOPPING:
1490                 return -EBUSY;
1491         case CHAN_MODE_FIXED:
1492                 if (local->oper_channel != chan)
1493                         return -EBUSY;
1494                 if (!sdata && local->_oper_channel_type == channel_type)
1495                         return 0;
1496                 break;
1497         case CHAN_MODE_UNDEFINED:
1498                 break;
1499         }
1500
1501         if (sdata)
1502                 old_vif_oper_type = sdata->vif.bss_conf.channel_type;
1503         old_oper_type = local->_oper_channel_type;
1504
1505         if (!ieee80211_set_channel_type(local, sdata, channel_type))
1506                 return -EBUSY;
1507
1508         old_oper = local->oper_channel;
1509         local->oper_channel = chan;
1510
1511         /* Update driver if changes were actually made. */
1512         if ((old_oper != local->oper_channel) ||
1513             (old_oper_type != local->_oper_channel_type))
1514                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL);
1515
1516         if (sdata && sdata->vif.type != NL80211_IFTYPE_MONITOR &&
1517             old_vif_oper_type != sdata->vif.bss_conf.channel_type)
1518                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1519
1520         return 0;
1521 }
1522
1523 #ifdef CONFIG_PM
1524 static int ieee80211_suspend(struct wiphy *wiphy,
1525                              struct cfg80211_wowlan *wowlan)
1526 {
1527         return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
1528 }
1529
1530 static int ieee80211_resume(struct wiphy *wiphy)
1531 {
1532         return __ieee80211_resume(wiphy_priv(wiphy));
1533 }
1534 #else
1535 #define ieee80211_suspend NULL
1536 #define ieee80211_resume NULL
1537 #endif
1538
1539 static int ieee80211_scan(struct wiphy *wiphy,
1540                           struct net_device *dev,
1541                           struct cfg80211_scan_request *req)
1542 {
1543         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1544
1545         switch (ieee80211_vif_type_p2p(&sdata->vif)) {
1546         case NL80211_IFTYPE_STATION:
1547         case NL80211_IFTYPE_ADHOC:
1548         case NL80211_IFTYPE_MESH_POINT:
1549         case NL80211_IFTYPE_P2P_CLIENT:
1550                 break;
1551         case NL80211_IFTYPE_P2P_GO:
1552                 if (sdata->local->ops->hw_scan)
1553                         break;
1554                 /*
1555                  * FIXME: implement NoA while scanning in software,
1556                  * for now fall through to allow scanning only when
1557                  * beaconing hasn't been configured yet
1558                  */
1559         case NL80211_IFTYPE_AP:
1560                 if (sdata->u.ap.beacon)
1561                         return -EOPNOTSUPP;
1562                 break;
1563         default:
1564                 return -EOPNOTSUPP;
1565         }
1566
1567         return ieee80211_request_scan(sdata, req);
1568 }
1569
1570 static int
1571 ieee80211_sched_scan_start(struct wiphy *wiphy,
1572                            struct net_device *dev,
1573                            struct cfg80211_sched_scan_request *req)
1574 {
1575         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1576
1577         if (!sdata->local->ops->sched_scan_start)
1578                 return -EOPNOTSUPP;
1579
1580         return ieee80211_request_sched_scan_start(sdata, req);
1581 }
1582
1583 static int
1584 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
1585 {
1586         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1587
1588         if (!sdata->local->ops->sched_scan_stop)
1589                 return -EOPNOTSUPP;
1590
1591         return ieee80211_request_sched_scan_stop(sdata);
1592 }
1593
1594 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
1595                           struct cfg80211_auth_request *req)
1596 {
1597         return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
1598 }
1599
1600 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
1601                            struct cfg80211_assoc_request *req)
1602 {
1603         struct ieee80211_local *local = wiphy_priv(wiphy);
1604         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1605
1606         switch (ieee80211_get_channel_mode(local, sdata)) {
1607         case CHAN_MODE_HOPPING:
1608                 return -EBUSY;
1609         case CHAN_MODE_FIXED:
1610                 if (local->oper_channel == req->bss->channel)
1611                         break;
1612                 return -EBUSY;
1613         case CHAN_MODE_UNDEFINED:
1614                 break;
1615         }
1616
1617         return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
1618 }
1619
1620 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
1621                             struct cfg80211_deauth_request *req)
1622 {
1623         return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
1624 }
1625
1626 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
1627                               struct cfg80211_disassoc_request *req)
1628 {
1629         return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
1630 }
1631
1632 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1633                                struct cfg80211_ibss_params *params)
1634 {
1635         struct ieee80211_local *local = wiphy_priv(wiphy);
1636         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1637
1638         switch (ieee80211_get_channel_mode(local, sdata)) {
1639         case CHAN_MODE_HOPPING:
1640                 return -EBUSY;
1641         case CHAN_MODE_FIXED:
1642                 if (!params->channel_fixed)
1643                         return -EBUSY;
1644                 if (local->oper_channel == params->channel)
1645                         break;
1646                 return -EBUSY;
1647         case CHAN_MODE_UNDEFINED:
1648                 break;
1649         }
1650
1651         return ieee80211_ibss_join(sdata, params);
1652 }
1653
1654 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
1655 {
1656         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1657
1658         return ieee80211_ibss_leave(sdata);
1659 }
1660
1661 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1662 {
1663         struct ieee80211_local *local = wiphy_priv(wiphy);
1664         int err;
1665
1666         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
1667                 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
1668
1669                 if (err)
1670                         return err;
1671         }
1672
1673         if (changed & WIPHY_PARAM_COVERAGE_CLASS) {
1674                 err = drv_set_coverage_class(local, wiphy->coverage_class);
1675
1676                 if (err)
1677                         return err;
1678         }
1679
1680         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1681                 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
1682
1683                 if (err)
1684                         return err;
1685         }
1686
1687         if (changed & WIPHY_PARAM_RETRY_SHORT)
1688                 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
1689         if (changed & WIPHY_PARAM_RETRY_LONG)
1690                 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
1691         if (changed &
1692             (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
1693                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
1694
1695         return 0;
1696 }
1697
1698 static int ieee80211_set_tx_power(struct wiphy *wiphy,
1699                                   enum nl80211_tx_power_setting type, int mbm)
1700 {
1701         struct ieee80211_local *local = wiphy_priv(wiphy);
1702         struct ieee80211_channel *chan = local->hw.conf.channel;
1703         u32 changes = 0;
1704
1705         switch (type) {
1706         case NL80211_TX_POWER_AUTOMATIC:
1707                 local->user_power_level = -1;
1708                 break;
1709         case NL80211_TX_POWER_LIMITED:
1710                 if (mbm < 0 || (mbm % 100))
1711                         return -EOPNOTSUPP;
1712                 local->user_power_level = MBM_TO_DBM(mbm);
1713                 break;
1714         case NL80211_TX_POWER_FIXED:
1715                 if (mbm < 0 || (mbm % 100))
1716                         return -EOPNOTSUPP;
1717                 /* TODO: move to cfg80211 when it knows the channel */
1718                 if (MBM_TO_DBM(mbm) > chan->max_power)
1719                         return -EINVAL;
1720                 local->user_power_level = MBM_TO_DBM(mbm);
1721                 break;
1722         }
1723
1724         ieee80211_hw_config(local, changes);
1725
1726         return 0;
1727 }
1728
1729 static int ieee80211_get_tx_power(struct wiphy *wiphy, int *dbm)
1730 {
1731         struct ieee80211_local *local = wiphy_priv(wiphy);
1732
1733         *dbm = local->hw.conf.power_level;
1734
1735         return 0;
1736 }
1737
1738 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
1739                                   const u8 *addr)
1740 {
1741         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1742
1743         memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
1744
1745         return 0;
1746 }
1747
1748 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
1749 {
1750         struct ieee80211_local *local = wiphy_priv(wiphy);
1751
1752         drv_rfkill_poll(local);
1753 }
1754
1755 #ifdef CONFIG_NL80211_TESTMODE
1756 static int ieee80211_testmode_cmd(struct wiphy *wiphy, void *data, int len)
1757 {
1758         struct ieee80211_local *local = wiphy_priv(wiphy);
1759
1760         if (!local->ops->testmode_cmd)
1761                 return -EOPNOTSUPP;
1762
1763         return local->ops->testmode_cmd(&local->hw, data, len);
1764 }
1765
1766 static int ieee80211_testmode_dump(struct wiphy *wiphy,
1767                                    struct sk_buff *skb,
1768                                    struct netlink_callback *cb,
1769                                    void *data, int len)
1770 {
1771         struct ieee80211_local *local = wiphy_priv(wiphy);
1772
1773         if (!local->ops->testmode_dump)
1774                 return -EOPNOTSUPP;
1775
1776         return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
1777 }
1778 #endif
1779
1780 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
1781                              enum ieee80211_smps_mode smps_mode)
1782 {
1783         const u8 *ap;
1784         enum ieee80211_smps_mode old_req;
1785         int err;
1786
1787         lockdep_assert_held(&sdata->u.mgd.mtx);
1788
1789         old_req = sdata->u.mgd.req_smps;
1790         sdata->u.mgd.req_smps = smps_mode;
1791
1792         if (old_req == smps_mode &&
1793             smps_mode != IEEE80211_SMPS_AUTOMATIC)
1794                 return 0;
1795
1796         /*
1797          * If not associated, or current association is not an HT
1798          * association, there's no need to send an action frame.
1799          */
1800         if (!sdata->u.mgd.associated ||
1801             sdata->vif.bss_conf.channel_type == NL80211_CHAN_NO_HT) {
1802                 mutex_lock(&sdata->local->iflist_mtx);
1803                 ieee80211_recalc_smps(sdata->local);
1804                 mutex_unlock(&sdata->local->iflist_mtx);
1805                 return 0;
1806         }
1807
1808         ap = sdata->u.mgd.associated->bssid;
1809
1810         if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
1811                 if (sdata->u.mgd.powersave)
1812                         smps_mode = IEEE80211_SMPS_DYNAMIC;
1813                 else
1814                         smps_mode = IEEE80211_SMPS_OFF;
1815         }
1816
1817         /* send SM PS frame to AP */
1818         err = ieee80211_send_smps_action(sdata, smps_mode,
1819                                          ap, ap);
1820         if (err)
1821                 sdata->u.mgd.req_smps = old_req;
1822
1823         return err;
1824 }
1825
1826 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
1827                                     bool enabled, int timeout)
1828 {
1829         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1830         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1831
1832         if (sdata->vif.type != NL80211_IFTYPE_STATION)
1833                 return -EOPNOTSUPP;
1834
1835         if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
1836                 return -EOPNOTSUPP;
1837
1838         if (enabled == sdata->u.mgd.powersave &&
1839             timeout == local->dynamic_ps_forced_timeout)
1840                 return 0;
1841
1842         sdata->u.mgd.powersave = enabled;
1843         local->dynamic_ps_forced_timeout = timeout;
1844
1845         /* no change, but if automatic follow powersave */
1846         mutex_lock(&sdata->u.mgd.mtx);
1847         __ieee80211_request_smps(sdata, sdata->u.mgd.req_smps);
1848         mutex_unlock(&sdata->u.mgd.mtx);
1849
1850         if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
1851                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1852
1853         ieee80211_recalc_ps(local, -1);
1854
1855         return 0;
1856 }
1857
1858 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
1859                                          struct net_device *dev,
1860                                          s32 rssi_thold, u32 rssi_hyst)
1861 {
1862         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1863         struct ieee80211_vif *vif = &sdata->vif;
1864         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
1865
1866         if (rssi_thold == bss_conf->cqm_rssi_thold &&
1867             rssi_hyst == bss_conf->cqm_rssi_hyst)
1868                 return 0;
1869
1870         bss_conf->cqm_rssi_thold = rssi_thold;
1871         bss_conf->cqm_rssi_hyst = rssi_hyst;
1872
1873         /* tell the driver upon association, unless already associated */
1874         if (sdata->u.mgd.associated &&
1875             sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
1876                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
1877
1878         return 0;
1879 }
1880
1881 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
1882                                       struct net_device *dev,
1883                                       const u8 *addr,
1884                                       const struct cfg80211_bitrate_mask *mask)
1885 {
1886         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1887         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1888         int i, ret;
1889
1890         if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) {
1891                 ret = drv_set_bitrate_mask(local, sdata, mask);
1892                 if (ret)
1893                         return ret;
1894         }
1895
1896         for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
1897                 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
1898                 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].mcs,
1899                        sizeof(mask->control[i].mcs));
1900         }
1901
1902         return 0;
1903 }
1904
1905 static int ieee80211_remain_on_channel_hw(struct ieee80211_local *local,
1906                                           struct net_device *dev,
1907                                           struct ieee80211_channel *chan,
1908                                           enum nl80211_channel_type chantype,
1909                                           unsigned int duration, u64 *cookie)
1910 {
1911         int ret;
1912         u32 random_cookie;
1913
1914         lockdep_assert_held(&local->mtx);
1915
1916         if (local->hw_roc_cookie)
1917                 return -EBUSY;
1918         /* must be nonzero */
1919         random_cookie = random32() | 1;
1920
1921         *cookie = random_cookie;
1922         local->hw_roc_dev = dev;
1923         local->hw_roc_cookie = random_cookie;
1924         local->hw_roc_channel = chan;
1925         local->hw_roc_channel_type = chantype;
1926         local->hw_roc_duration = duration;
1927         ret = drv_remain_on_channel(local, chan, chantype, duration);
1928         if (ret) {
1929                 local->hw_roc_channel = NULL;
1930                 local->hw_roc_cookie = 0;
1931         }
1932
1933         return ret;
1934 }
1935
1936 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
1937                                        struct net_device *dev,
1938                                        struct ieee80211_channel *chan,
1939                                        enum nl80211_channel_type channel_type,
1940                                        unsigned int duration,
1941                                        u64 *cookie)
1942 {
1943         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1944         struct ieee80211_local *local = sdata->local;
1945
1946         if (local->ops->remain_on_channel) {
1947                 int ret;
1948
1949                 mutex_lock(&local->mtx);
1950                 ret = ieee80211_remain_on_channel_hw(local, dev,
1951                                                      chan, channel_type,
1952                                                      duration, cookie);
1953                 local->hw_roc_for_tx = false;
1954                 mutex_unlock(&local->mtx);
1955
1956                 return ret;
1957         }
1958
1959         return ieee80211_wk_remain_on_channel(sdata, chan, channel_type,
1960                                               duration, cookie);
1961 }
1962
1963 static int ieee80211_cancel_remain_on_channel_hw(struct ieee80211_local *local,
1964                                                  u64 cookie)
1965 {
1966         int ret;
1967
1968         lockdep_assert_held(&local->mtx);
1969
1970         if (local->hw_roc_cookie != cookie)
1971                 return -ENOENT;
1972
1973         ret = drv_cancel_remain_on_channel(local);
1974         if (ret)
1975                 return ret;
1976
1977         local->hw_roc_cookie = 0;
1978         local->hw_roc_channel = NULL;
1979
1980         ieee80211_recalc_idle(local);
1981
1982         return 0;
1983 }
1984
1985 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
1986                                               struct net_device *dev,
1987                                               u64 cookie)
1988 {
1989         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1990         struct ieee80211_local *local = sdata->local;
1991
1992         if (local->ops->cancel_remain_on_channel) {
1993                 int ret;
1994
1995                 mutex_lock(&local->mtx);
1996                 ret = ieee80211_cancel_remain_on_channel_hw(local, cookie);
1997                 mutex_unlock(&local->mtx);
1998
1999                 return ret;
2000         }
2001
2002         return ieee80211_wk_cancel_remain_on_channel(sdata, cookie);
2003 }
2004
2005 static enum work_done_result
2006 ieee80211_offchan_tx_done(struct ieee80211_work *wk, struct sk_buff *skb)
2007 {
2008         /*
2009          * Use the data embedded in the work struct for reporting
2010          * here so if the driver mangled the SKB before dropping
2011          * it (which is the only way we really should get here)
2012          * then we don't report mangled data.
2013          *
2014          * If there was no wait time, then by the time we get here
2015          * the driver will likely not have reported the status yet,
2016          * so in that case userspace will have to deal with it.
2017          */
2018
2019         if (wk->offchan_tx.wait && !wk->offchan_tx.status)
2020                 cfg80211_mgmt_tx_status(wk->sdata->dev,
2021                                         (unsigned long) wk->offchan_tx.frame,
2022                                         wk->data, wk->data_len, false, GFP_KERNEL);
2023
2024         return WORK_DONE_DESTROY;
2025 }
2026
2027 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct net_device *dev,
2028                              struct ieee80211_channel *chan, bool offchan,
2029                              enum nl80211_channel_type channel_type,
2030                              bool channel_type_valid, unsigned int wait,
2031                              const u8 *buf, size_t len, bool no_cck,
2032                              bool dont_wait_for_ack, u64 *cookie)
2033 {
2034         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2035         struct ieee80211_local *local = sdata->local;
2036         struct sk_buff *skb;
2037         struct sta_info *sta;
2038         struct ieee80211_work *wk;
2039         const struct ieee80211_mgmt *mgmt = (void *)buf;
2040         u32 flags;
2041         bool is_offchan = false;
2042
2043         if (dont_wait_for_ack)
2044                 flags = IEEE80211_TX_CTL_NO_ACK;
2045         else
2046                 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
2047                         IEEE80211_TX_CTL_REQ_TX_STATUS;
2048
2049         /* Check that we are on the requested channel for transmission */
2050         if (chan != local->tmp_channel &&
2051             chan != local->oper_channel)
2052                 is_offchan = true;
2053         if (channel_type_valid &&
2054             (channel_type != local->tmp_channel_type &&
2055              channel_type != local->_oper_channel_type))
2056                 is_offchan = true;
2057
2058         if (chan == local->hw_roc_channel) {
2059                 /* TODO: check channel type? */
2060                 is_offchan = false;
2061                 flags |= IEEE80211_TX_CTL_TX_OFFCHAN;
2062         }
2063
2064         if (no_cck)
2065                 flags |= IEEE80211_TX_CTL_NO_CCK_RATE;
2066
2067         if (is_offchan && !offchan)
2068                 return -EBUSY;
2069
2070         switch (sdata->vif.type) {
2071         case NL80211_IFTYPE_ADHOC:
2072         case NL80211_IFTYPE_AP:
2073         case NL80211_IFTYPE_AP_VLAN:
2074         case NL80211_IFTYPE_P2P_GO:
2075         case NL80211_IFTYPE_MESH_POINT:
2076                 if (!ieee80211_is_action(mgmt->frame_control) ||
2077                     mgmt->u.action.category == WLAN_CATEGORY_PUBLIC)
2078                         break;
2079                 rcu_read_lock();
2080                 sta = sta_info_get(sdata, mgmt->da);
2081                 rcu_read_unlock();
2082                 if (!sta)
2083                         return -ENOLINK;
2084                 break;
2085         case NL80211_IFTYPE_STATION:
2086         case NL80211_IFTYPE_P2P_CLIENT:
2087                 break;
2088         default:
2089                 return -EOPNOTSUPP;
2090         }
2091
2092         skb = dev_alloc_skb(local->hw.extra_tx_headroom + len);
2093         if (!skb)
2094                 return -ENOMEM;
2095         skb_reserve(skb, local->hw.extra_tx_headroom);
2096
2097         memcpy(skb_put(skb, len), buf, len);
2098
2099         IEEE80211_SKB_CB(skb)->flags = flags;
2100
2101         skb->dev = sdata->dev;
2102
2103         *cookie = (unsigned long) skb;
2104
2105         if (is_offchan && local->ops->remain_on_channel) {
2106                 unsigned int duration;
2107                 int ret;
2108
2109                 mutex_lock(&local->mtx);
2110                 /*
2111                  * If the duration is zero, then the driver
2112                  * wouldn't actually do anything. Set it to
2113                  * 100 for now.
2114                  *
2115                  * TODO: cancel the off-channel operation
2116                  *       when we get the SKB's TX status and
2117                  *       the wait time was zero before.
2118                  */
2119                 duration = 100;
2120                 if (wait)
2121                         duration = wait;
2122                 ret = ieee80211_remain_on_channel_hw(local, dev, chan,
2123                                                      channel_type,
2124                                                      duration, cookie);
2125                 if (ret) {
2126                         kfree_skb(skb);
2127                         mutex_unlock(&local->mtx);
2128                         return ret;
2129                 }
2130
2131                 local->hw_roc_for_tx = true;
2132                 local->hw_roc_duration = wait;
2133
2134                 /*
2135                  * queue up frame for transmission after
2136                  * ieee80211_ready_on_channel call
2137                  */
2138
2139                 /* modify cookie to prevent API mismatches */
2140                 *cookie ^= 2;
2141                 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN;
2142                 local->hw_roc_skb = skb;
2143                 local->hw_roc_skb_for_status = skb;
2144                 mutex_unlock(&local->mtx);
2145
2146                 return 0;
2147         }
2148
2149         /*
2150          * Can transmit right away if the channel was the
2151          * right one and there's no wait involved... If a
2152          * wait is involved, we might otherwise not be on
2153          * the right channel for long enough!
2154          */
2155         if (!is_offchan && !wait && !sdata->vif.bss_conf.idle) {
2156                 ieee80211_tx_skb(sdata, skb);
2157                 return 0;
2158         }
2159
2160         wk = kzalloc(sizeof(*wk) + len, GFP_KERNEL);
2161         if (!wk) {
2162                 kfree_skb(skb);
2163                 return -ENOMEM;
2164         }
2165
2166         wk->type = IEEE80211_WORK_OFFCHANNEL_TX;
2167         wk->chan = chan;
2168         wk->chan_type = channel_type;
2169         wk->sdata = sdata;
2170         wk->done = ieee80211_offchan_tx_done;
2171         wk->offchan_tx.frame = skb;
2172         wk->offchan_tx.wait = wait;
2173         wk->data_len = len;
2174         memcpy(wk->data, buf, len);
2175
2176         ieee80211_add_work(wk);
2177         return 0;
2178 }
2179
2180 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
2181                                          struct net_device *dev,
2182                                          u64 cookie)
2183 {
2184         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2185         struct ieee80211_local *local = sdata->local;
2186         struct ieee80211_work *wk;
2187         int ret = -ENOENT;
2188
2189         mutex_lock(&local->mtx);
2190
2191         if (local->ops->cancel_remain_on_channel) {
2192                 cookie ^= 2;
2193                 ret = ieee80211_cancel_remain_on_channel_hw(local, cookie);
2194
2195                 if (ret == 0) {
2196                         kfree_skb(local->hw_roc_skb);
2197                         local->hw_roc_skb = NULL;
2198                         local->hw_roc_skb_for_status = NULL;
2199                 }
2200
2201                 mutex_unlock(&local->mtx);
2202
2203                 return ret;
2204         }
2205
2206         list_for_each_entry(wk, &local->work_list, list) {
2207                 if (wk->sdata != sdata)
2208                         continue;
2209
2210                 if (wk->type != IEEE80211_WORK_OFFCHANNEL_TX)
2211                         continue;
2212
2213                 if (cookie != (unsigned long) wk->offchan_tx.frame)
2214                         continue;
2215
2216                 wk->timeout = jiffies;
2217
2218                 ieee80211_queue_work(&local->hw, &local->work_work);
2219                 ret = 0;
2220                 break;
2221         }
2222         mutex_unlock(&local->mtx);
2223
2224         return ret;
2225 }
2226
2227 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
2228                                           struct net_device *dev,
2229                                           u16 frame_type, bool reg)
2230 {
2231         struct ieee80211_local *local = wiphy_priv(wiphy);
2232
2233         if (frame_type != (IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ))
2234                 return;
2235
2236         if (reg)
2237                 local->probe_req_reg++;
2238         else
2239                 local->probe_req_reg--;
2240
2241         ieee80211_queue_work(&local->hw, &local->reconfig_filter);
2242 }
2243
2244 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
2245 {
2246         struct ieee80211_local *local = wiphy_priv(wiphy);
2247
2248         if (local->started)
2249                 return -EOPNOTSUPP;
2250
2251         return drv_set_antenna(local, tx_ant, rx_ant);
2252 }
2253
2254 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
2255 {
2256         struct ieee80211_local *local = wiphy_priv(wiphy);
2257
2258         return drv_get_antenna(local, tx_ant, rx_ant);
2259 }
2260
2261 static int ieee80211_set_ringparam(struct wiphy *wiphy, u32 tx, u32 rx)
2262 {
2263         struct ieee80211_local *local = wiphy_priv(wiphy);
2264
2265         return drv_set_ringparam(local, tx, rx);
2266 }
2267
2268 static void ieee80211_get_ringparam(struct wiphy *wiphy,
2269                                     u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max)
2270 {
2271         struct ieee80211_local *local = wiphy_priv(wiphy);
2272
2273         drv_get_ringparam(local, tx, tx_max, rx, rx_max);
2274 }
2275
2276 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
2277                                     struct net_device *dev,
2278                                     struct cfg80211_gtk_rekey_data *data)
2279 {
2280         struct ieee80211_local *local = wiphy_priv(wiphy);
2281         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2282
2283         if (!local->ops->set_rekey_data)
2284                 return -EOPNOTSUPP;
2285
2286         drv_set_rekey_data(local, sdata, data);
2287
2288         return 0;
2289 }
2290
2291 static void ieee80211_tdls_add_ext_capab(struct sk_buff *skb)
2292 {
2293         u8 *pos = (void *)skb_put(skb, 7);
2294
2295         *pos++ = WLAN_EID_EXT_CAPABILITY;
2296         *pos++ = 5; /* len */
2297         *pos++ = 0x0;
2298         *pos++ = 0x0;
2299         *pos++ = 0x0;
2300         *pos++ = 0x0;
2301         *pos++ = WLAN_EXT_CAPA5_TDLS_ENABLED;
2302 }
2303
2304 static u16 ieee80211_get_tdls_sta_capab(struct ieee80211_sub_if_data *sdata)
2305 {
2306         struct ieee80211_local *local = sdata->local;
2307         u16 capab;
2308
2309         capab = 0;
2310         if (local->oper_channel->band != IEEE80211_BAND_2GHZ)
2311                 return capab;
2312
2313         if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE))
2314                 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
2315         if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE))
2316                 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
2317
2318         return capab;
2319 }
2320
2321 static void ieee80211_tdls_add_link_ie(struct sk_buff *skb, u8 *src_addr,
2322                                        u8 *peer, u8 *bssid)
2323 {
2324         struct ieee80211_tdls_lnkie *lnkid;
2325
2326         lnkid = (void *)skb_put(skb, sizeof(struct ieee80211_tdls_lnkie));
2327
2328         lnkid->ie_type = WLAN_EID_LINK_ID;
2329         lnkid->ie_len = sizeof(struct ieee80211_tdls_lnkie) - 2;
2330
2331         memcpy(lnkid->bssid, bssid, ETH_ALEN);
2332         memcpy(lnkid->init_sta, src_addr, ETH_ALEN);
2333         memcpy(lnkid->resp_sta, peer, ETH_ALEN);
2334 }
2335
2336 static int
2337 ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev,
2338                                u8 *peer, u8 action_code, u8 dialog_token,
2339                                u16 status_code, struct sk_buff *skb)
2340 {
2341         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2342         struct ieee80211_tdls_data *tf;
2343
2344         tf = (void *)skb_put(skb, offsetof(struct ieee80211_tdls_data, u));
2345
2346         memcpy(tf->da, peer, ETH_ALEN);
2347         memcpy(tf->sa, sdata->vif.addr, ETH_ALEN);
2348         tf->ether_type = cpu_to_be16(ETH_P_TDLS);
2349         tf->payload_type = WLAN_TDLS_SNAP_RFTYPE;
2350
2351         switch (action_code) {
2352         case WLAN_TDLS_SETUP_REQUEST:
2353                 tf->category = WLAN_CATEGORY_TDLS;
2354                 tf->action_code = WLAN_TDLS_SETUP_REQUEST;
2355
2356                 skb_put(skb, sizeof(tf->u.setup_req));
2357                 tf->u.setup_req.dialog_token = dialog_token;
2358                 tf->u.setup_req.capability =
2359                         cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2360
2361                 ieee80211_add_srates_ie(&sdata->vif, skb, false);
2362                 ieee80211_add_ext_srates_ie(&sdata->vif, skb, false);
2363                 ieee80211_tdls_add_ext_capab(skb);
2364                 break;
2365         case WLAN_TDLS_SETUP_RESPONSE:
2366                 tf->category = WLAN_CATEGORY_TDLS;
2367                 tf->action_code = WLAN_TDLS_SETUP_RESPONSE;
2368
2369                 skb_put(skb, sizeof(tf->u.setup_resp));
2370                 tf->u.setup_resp.status_code = cpu_to_le16(status_code);
2371                 tf->u.setup_resp.dialog_token = dialog_token;
2372                 tf->u.setup_resp.capability =
2373                         cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2374
2375                 ieee80211_add_srates_ie(&sdata->vif, skb, false);
2376                 ieee80211_add_ext_srates_ie(&sdata->vif, skb, false);
2377                 ieee80211_tdls_add_ext_capab(skb);
2378                 break;
2379         case WLAN_TDLS_SETUP_CONFIRM:
2380                 tf->category = WLAN_CATEGORY_TDLS;
2381                 tf->action_code = WLAN_TDLS_SETUP_CONFIRM;
2382
2383                 skb_put(skb, sizeof(tf->u.setup_cfm));
2384                 tf->u.setup_cfm.status_code = cpu_to_le16(status_code);
2385                 tf->u.setup_cfm.dialog_token = dialog_token;
2386                 break;
2387         case WLAN_TDLS_TEARDOWN:
2388                 tf->category = WLAN_CATEGORY_TDLS;
2389                 tf->action_code = WLAN_TDLS_TEARDOWN;
2390
2391                 skb_put(skb, sizeof(tf->u.teardown));
2392                 tf->u.teardown.reason_code = cpu_to_le16(status_code);
2393                 break;
2394         case WLAN_TDLS_DISCOVERY_REQUEST:
2395                 tf->category = WLAN_CATEGORY_TDLS;
2396                 tf->action_code = WLAN_TDLS_DISCOVERY_REQUEST;
2397
2398                 skb_put(skb, sizeof(tf->u.discover_req));
2399                 tf->u.discover_req.dialog_token = dialog_token;
2400                 break;
2401         default:
2402                 return -EINVAL;
2403         }
2404
2405         return 0;
2406 }
2407
2408 static int
2409 ieee80211_prep_tdls_direct(struct wiphy *wiphy, struct net_device *dev,
2410                            u8 *peer, u8 action_code, u8 dialog_token,
2411                            u16 status_code, struct sk_buff *skb)
2412 {
2413         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2414         struct ieee80211_mgmt *mgmt;
2415
2416         mgmt = (void *)skb_put(skb, 24);
2417         memset(mgmt, 0, 24);
2418         memcpy(mgmt->da, peer, ETH_ALEN);
2419         memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
2420         memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN);
2421
2422         mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
2423                                           IEEE80211_STYPE_ACTION);
2424
2425         switch (action_code) {
2426         case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2427                 skb_put(skb, 1 + sizeof(mgmt->u.action.u.tdls_discover_resp));
2428                 mgmt->u.action.category = WLAN_CATEGORY_PUBLIC;
2429                 mgmt->u.action.u.tdls_discover_resp.action_code =
2430                         WLAN_PUB_ACTION_TDLS_DISCOVER_RES;
2431                 mgmt->u.action.u.tdls_discover_resp.dialog_token =
2432                         dialog_token;
2433                 mgmt->u.action.u.tdls_discover_resp.capability =
2434                         cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2435
2436                 ieee80211_add_srates_ie(&sdata->vif, skb, false);
2437                 ieee80211_add_ext_srates_ie(&sdata->vif, skb, false);
2438                 ieee80211_tdls_add_ext_capab(skb);
2439                 break;
2440         default:
2441                 return -EINVAL;
2442         }
2443
2444         return 0;
2445 }
2446
2447 static int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
2448                                u8 *peer, u8 action_code, u8 dialog_token,
2449                                u16 status_code, const u8 *extra_ies,
2450                                size_t extra_ies_len)
2451 {
2452         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2453         struct ieee80211_local *local = sdata->local;
2454         struct ieee80211_tx_info *info;
2455         struct sk_buff *skb = NULL;
2456         bool send_direct;
2457         int ret;
2458
2459         if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
2460                 return -ENOTSUPP;
2461
2462         /* make sure we are in managed mode, and associated */
2463         if (sdata->vif.type != NL80211_IFTYPE_STATION ||
2464             !sdata->u.mgd.associated)
2465                 return -EINVAL;
2466
2467 #ifdef CONFIG_MAC80211_VERBOSE_TDLS_DEBUG
2468         printk(KERN_DEBUG "TDLS mgmt action %d peer %pM\n", action_code, peer);
2469 #endif
2470
2471         skb = dev_alloc_skb(local->hw.extra_tx_headroom +
2472                             max(sizeof(struct ieee80211_mgmt),
2473                                 sizeof(struct ieee80211_tdls_data)) +
2474                             50 + /* supported rates */
2475                             7 + /* ext capab */
2476                             extra_ies_len +
2477                             sizeof(struct ieee80211_tdls_lnkie));
2478         if (!skb)
2479                 return -ENOMEM;
2480
2481         info = IEEE80211_SKB_CB(skb);
2482         skb_reserve(skb, local->hw.extra_tx_headroom);
2483
2484         switch (action_code) {
2485         case WLAN_TDLS_SETUP_REQUEST:
2486         case WLAN_TDLS_SETUP_RESPONSE:
2487         case WLAN_TDLS_SETUP_CONFIRM:
2488         case WLAN_TDLS_TEARDOWN:
2489         case WLAN_TDLS_DISCOVERY_REQUEST:
2490                 ret = ieee80211_prep_tdls_encap_data(wiphy, dev, peer,
2491                                                      action_code, dialog_token,
2492                                                      status_code, skb);
2493                 send_direct = false;
2494                 break;
2495         case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2496                 ret = ieee80211_prep_tdls_direct(wiphy, dev, peer, action_code,
2497                                                  dialog_token, status_code,
2498                                                  skb);
2499                 send_direct = true;
2500                 break;
2501         default:
2502                 ret = -ENOTSUPP;
2503                 break;
2504         }
2505
2506         if (ret < 0)
2507                 goto fail;
2508
2509         if (extra_ies_len)
2510                 memcpy(skb_put(skb, extra_ies_len), extra_ies, extra_ies_len);
2511
2512         /* the TDLS link IE is always added last */
2513         switch (action_code) {
2514         case WLAN_TDLS_SETUP_REQUEST:
2515         case WLAN_TDLS_SETUP_CONFIRM:
2516         case WLAN_TDLS_TEARDOWN:
2517         case WLAN_TDLS_DISCOVERY_REQUEST:
2518                 /* we are the initiator */
2519                 ieee80211_tdls_add_link_ie(skb, sdata->vif.addr, peer,
2520                                            sdata->u.mgd.bssid);
2521                 break;
2522         case WLAN_TDLS_SETUP_RESPONSE:
2523         case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2524                 /* we are the responder */
2525                 ieee80211_tdls_add_link_ie(skb, peer, sdata->vif.addr,
2526                                            sdata->u.mgd.bssid);
2527                 break;
2528         default:
2529                 ret = -ENOTSUPP;
2530                 goto fail;
2531         }
2532
2533         if (send_direct) {
2534                 ieee80211_tx_skb(sdata, skb);
2535                 return 0;
2536         }
2537
2538         /*
2539          * According to 802.11z: Setup req/resp are sent in AC_BK, otherwise
2540          * we should default to AC_VI.
2541          */
2542         switch (action_code) {
2543         case WLAN_TDLS_SETUP_REQUEST:
2544         case WLAN_TDLS_SETUP_RESPONSE:
2545                 skb_set_queue_mapping(skb, IEEE80211_AC_BK);
2546                 skb->priority = 2;
2547                 break;
2548         default:
2549                 skb_set_queue_mapping(skb, IEEE80211_AC_VI);
2550                 skb->priority = 5;
2551                 break;
2552         }
2553
2554         /* disable bottom halves when entering the Tx path */
2555         local_bh_disable();
2556         ret = ieee80211_subif_start_xmit(skb, dev);
2557         local_bh_enable();
2558
2559         return ret;
2560
2561 fail:
2562         dev_kfree_skb(skb);
2563         return ret;
2564 }
2565
2566 static int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
2567                                u8 *peer, enum nl80211_tdls_operation oper)
2568 {
2569         struct sta_info *sta;
2570         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2571
2572         if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
2573                 return -ENOTSUPP;
2574
2575         if (sdata->vif.type != NL80211_IFTYPE_STATION)
2576                 return -EINVAL;
2577
2578 #ifdef CONFIG_MAC80211_VERBOSE_TDLS_DEBUG
2579         printk(KERN_DEBUG "TDLS oper %d peer %pM\n", oper, peer);
2580 #endif
2581
2582         switch (oper) {
2583         case NL80211_TDLS_ENABLE_LINK:
2584                 rcu_read_lock();
2585                 sta = sta_info_get(sdata, peer);
2586                 if (!sta) {
2587                         rcu_read_unlock();
2588                         return -ENOLINK;
2589                 }
2590
2591                 set_sta_flag(sta, WLAN_STA_TDLS_PEER_AUTH);
2592                 rcu_read_unlock();
2593                 break;
2594         case NL80211_TDLS_DISABLE_LINK:
2595                 return sta_info_destroy_addr(sdata, peer);
2596         case NL80211_TDLS_TEARDOWN:
2597         case NL80211_TDLS_SETUP:
2598         case NL80211_TDLS_DISCOVERY_REQ:
2599                 /* We don't support in-driver setup/teardown/discovery */
2600                 return -ENOTSUPP;
2601         default:
2602                 return -ENOTSUPP;
2603         }
2604
2605         return 0;
2606 }
2607
2608 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
2609                                   const u8 *peer, u64 *cookie)
2610 {
2611         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2612         struct ieee80211_local *local = sdata->local;
2613         struct ieee80211_qos_hdr *nullfunc;
2614         struct sk_buff *skb;
2615         int size = sizeof(*nullfunc);
2616         __le16 fc;
2617         bool qos;
2618         struct ieee80211_tx_info *info;
2619         struct sta_info *sta;
2620
2621         rcu_read_lock();
2622         sta = sta_info_get(sdata, peer);
2623         if (sta) {
2624                 qos = test_sta_flag(sta, WLAN_STA_WME);
2625                 rcu_read_unlock();
2626         } else {
2627                 rcu_read_unlock();
2628                 return -ENOLINK;
2629         }
2630
2631         if (qos) {
2632                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
2633                                  IEEE80211_STYPE_QOS_NULLFUNC |
2634                                  IEEE80211_FCTL_FROMDS);
2635         } else {
2636                 size -= 2;
2637                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
2638                                  IEEE80211_STYPE_NULLFUNC |
2639                                  IEEE80211_FCTL_FROMDS);
2640         }
2641
2642         skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
2643         if (!skb)
2644                 return -ENOMEM;
2645
2646         skb->dev = dev;
2647
2648         skb_reserve(skb, local->hw.extra_tx_headroom);
2649
2650         nullfunc = (void *) skb_put(skb, size);
2651         nullfunc->frame_control = fc;
2652         nullfunc->duration_id = 0;
2653         memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
2654         memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
2655         memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
2656         nullfunc->seq_ctrl = 0;
2657
2658         info = IEEE80211_SKB_CB(skb);
2659
2660         info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
2661                        IEEE80211_TX_INTFL_NL80211_FRAME_TX;
2662
2663         skb_set_queue_mapping(skb, IEEE80211_AC_VO);
2664         skb->priority = 7;
2665         if (qos)
2666                 nullfunc->qos_ctrl = cpu_to_le16(7);
2667
2668         local_bh_disable();
2669         ieee80211_xmit(sdata, skb);
2670         local_bh_enable();
2671
2672         *cookie = (unsigned long) skb;
2673         return 0;
2674 }
2675
2676 static struct ieee80211_channel *
2677 ieee80211_wiphy_get_channel(struct wiphy *wiphy)
2678 {
2679         struct ieee80211_local *local = wiphy_priv(wiphy);
2680
2681         return local->oper_channel;
2682 }
2683
2684 struct cfg80211_ops mac80211_config_ops = {
2685         .add_virtual_intf = ieee80211_add_iface,
2686         .del_virtual_intf = ieee80211_del_iface,
2687         .change_virtual_intf = ieee80211_change_iface,
2688         .add_key = ieee80211_add_key,
2689         .del_key = ieee80211_del_key,
2690         .get_key = ieee80211_get_key,
2691         .set_default_key = ieee80211_config_default_key,
2692         .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
2693         .start_ap = ieee80211_start_ap,
2694         .change_beacon = ieee80211_change_beacon,
2695         .stop_ap = ieee80211_stop_ap,
2696         .add_station = ieee80211_add_station,
2697         .del_station = ieee80211_del_station,
2698         .change_station = ieee80211_change_station,
2699         .get_station = ieee80211_get_station,
2700         .dump_station = ieee80211_dump_station,
2701         .dump_survey = ieee80211_dump_survey,
2702 #ifdef CONFIG_MAC80211_MESH
2703         .add_mpath = ieee80211_add_mpath,
2704         .del_mpath = ieee80211_del_mpath,
2705         .change_mpath = ieee80211_change_mpath,
2706         .get_mpath = ieee80211_get_mpath,
2707         .dump_mpath = ieee80211_dump_mpath,
2708         .update_mesh_config = ieee80211_update_mesh_config,
2709         .get_mesh_config = ieee80211_get_mesh_config,
2710         .join_mesh = ieee80211_join_mesh,
2711         .leave_mesh = ieee80211_leave_mesh,
2712 #endif
2713         .change_bss = ieee80211_change_bss,
2714         .set_txq_params = ieee80211_set_txq_params,
2715         .set_channel = ieee80211_set_channel,
2716         .suspend = ieee80211_suspend,
2717         .resume = ieee80211_resume,
2718         .scan = ieee80211_scan,
2719         .sched_scan_start = ieee80211_sched_scan_start,
2720         .sched_scan_stop = ieee80211_sched_scan_stop,
2721         .auth = ieee80211_auth,
2722         .assoc = ieee80211_assoc,
2723         .deauth = ieee80211_deauth,
2724         .disassoc = ieee80211_disassoc,
2725         .join_ibss = ieee80211_join_ibss,
2726         .leave_ibss = ieee80211_leave_ibss,
2727         .set_wiphy_params = ieee80211_set_wiphy_params,
2728         .set_tx_power = ieee80211_set_tx_power,
2729         .get_tx_power = ieee80211_get_tx_power,
2730         .set_wds_peer = ieee80211_set_wds_peer,
2731         .rfkill_poll = ieee80211_rfkill_poll,
2732         CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
2733         CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
2734         .set_power_mgmt = ieee80211_set_power_mgmt,
2735         .set_bitrate_mask = ieee80211_set_bitrate_mask,
2736         .remain_on_channel = ieee80211_remain_on_channel,
2737         .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
2738         .mgmt_tx = ieee80211_mgmt_tx,
2739         .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
2740         .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
2741         .mgmt_frame_register = ieee80211_mgmt_frame_register,
2742         .set_antenna = ieee80211_set_antenna,
2743         .get_antenna = ieee80211_get_antenna,
2744         .set_ringparam = ieee80211_set_ringparam,
2745         .get_ringparam = ieee80211_get_ringparam,
2746         .set_rekey_data = ieee80211_set_rekey_data,
2747         .tdls_oper = ieee80211_tdls_oper,
2748         .tdls_mgmt = ieee80211_tdls_mgmt,
2749         .probe_client = ieee80211_probe_client,
2750         .get_channel = ieee80211_wiphy_get_channel,
2751         .set_noack_map = ieee80211_set_noack_map,
2752 };