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 <net/cfg80211.h>
  16 #include "ieee80211_i.h"
  17 #include "driver-ops.h"
  18 #include "cfg.h"
  19 #include "rate.h"
  20 #include "mesh.h"
  21
  22 static int ieee80211_add_iface(struct wiphy *wiphy, char *name,
  23                                enum nl80211_iftype type, u32 *flags,
  24                                struct vif_params *params)
  25 {
  26         struct ieee80211_local *local = wiphy_priv(wiphy);
  27         struct net_device *dev;
  28         struct ieee80211_sub_if_data *sdata;
  29         int err;
  30
  31         err = ieee80211_if_add(local, name, &dev, type, params);
  32         if (err || type != NL80211_IFTYPE_MONITOR || !flags)
  33                 return err;
  34
  35         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  36         sdata->u.mntr_flags = *flags;
  37         return 0;
  38 }
  39
  40 static int ieee80211_del_iface(struct wiphy *wiphy, struct net_device *dev)
  41 {
  42         ieee80211_if_remove(IEEE80211_DEV_TO_SUB_IF(dev));
  43
  44         return 0;
  45 }
  46
  47 static int ieee80211_change_iface(struct wiphy *wiphy,
  48                                   struct net_device *dev,
  49                                   enum nl80211_iftype type, u32 *flags,
  50                                   struct vif_params *params)
  51 {
  52         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  53         int ret;
  54
  55         ret = ieee80211_if_change_type(sdata, type);
  56         if (ret)
  57                 return ret;
  58
  59         if (ieee80211_vif_is_mesh(&sdata->vif) && params->mesh_id_len)
  60                 ieee80211_sdata_set_mesh_id(sdata,
  61                                             params->mesh_id_len,
  62                                             params->mesh_id);
  63
  64         if (type == NL80211_IFTYPE_AP_VLAN &&
  65             params && params->use_4addr == 0)
  66                 rcu_assign_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_add_key(struct wiphy *wiphy, struct net_device *dev,
 106                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 107                              struct key_params *params)
 108 {
 109         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 110         struct sta_info *sta = NULL;
 111         struct ieee80211_key *key;
 112         int err;
 113
 114         if (!ieee80211_sdata_running(sdata))
 115                 return -ENETDOWN;
 116
 117         /* reject WEP and TKIP keys if WEP failed to initialize */
 118         switch (params->cipher) {
 119         case WLAN_CIPHER_SUITE_WEP40:
 120         case WLAN_CIPHER_SUITE_TKIP:
 121         case WLAN_CIPHER_SUITE_WEP104:
 122                 if (IS_ERR(sdata->local->wep_tx_tfm))
 123                         return -EINVAL;
 124                 break;
 125         default:
 126                 break;
 127         }
 128
 129         key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
 130                                   params->key, params->seq_len, params->seq);
 131         if (IS_ERR(key))
 132                 return PTR_ERR(key);
 133
 134         if (pairwise)
 135                 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
 136
 137         mutex_lock(&sdata->local->sta_mtx);
 138
 139         if (mac_addr) {
 140                 sta = sta_info_get_bss(sdata, mac_addr);
 141                 if (!sta) {
 142                         ieee80211_key_free(sdata->local, key);
 143                         err = -ENOENT;
 144                         goto out_unlock;
 145                 }
 146         }
 147
 148         err = ieee80211_key_link(key, sdata, sta);
 149         if (err)
 150                 ieee80211_key_free(sdata->local, key);
 151
 152  out_unlock:
 153         mutex_unlock(&sdata->local->sta_mtx);
 154
 155         return err;
 156 }
 157
 158 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
 159                              u8 key_idx, bool pairwise, const u8 *mac_addr)
 160 {
 161         struct ieee80211_sub_if_data *sdata;
 162         struct sta_info *sta;
 163         int ret;
 164
 165         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 166
 167         mutex_lock(&sdata->local->sta_mtx);
 168
 169         if (mac_addr) {
 170                 ret = -ENOENT;
 171
 172                 sta = sta_info_get_bss(sdata, mac_addr);
 173                 if (!sta)
 174                         goto out_unlock;
 175
 176                 if (pairwise) {
 177                         if (sta->ptk) {
 178                                 ieee80211_key_free(sdata->local, sta->ptk);
 179                                 ret = 0;
 180                         }
 181                 } else {
 182                         if (sta->gtk[key_idx]) {
 183                                 ieee80211_key_free(sdata->local,
 184                                                    sta->gtk[key_idx]);
 185                                 ret = 0;
 186                         }
 187                 }
 188
 189                 goto out_unlock;
 190         }
 191
 192         if (!sdata->keys[key_idx]) {
 193                 ret = -ENOENT;
 194                 goto out_unlock;
 195         }
 196
 197         ieee80211_key_free(sdata->local, sdata->keys[key_idx]);
 198         WARN_ON(sdata->keys[key_idx]);
 199
 200         ret = 0;
 201  out_unlock:
 202         mutex_unlock(&sdata->local->sta_mtx);
 203
 204         return ret;
 205 }
 206
 207 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
 208                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 209                              void *cookie,
 210                              void (*callback)(void *cookie,
 211                                               struct key_params *params))
 212 {
 213         struct ieee80211_sub_if_data *sdata;
 214         struct sta_info *sta = NULL;
 215         u8 seq[6] = {0};
 216         struct key_params params;
 217         struct ieee80211_key *key = NULL;
 218         u32 iv32;
 219         u16 iv16;
 220         int err = -ENOENT;
 221
 222         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 223
 224         rcu_read_lock();
 225
 226         if (mac_addr) {
 227                 sta = sta_info_get_bss(sdata, mac_addr);
 228                 if (!sta)
 229                         goto out;
 230
 231                 if (pairwise)
 232                         key = sta->ptk;
 233                 else if (key_idx < NUM_DEFAULT_KEYS)
 234                         key = sta->gtk[key_idx];
 235         } else
 236                 key = sdata->keys[key_idx];
 237
 238         if (!key)
 239                 goto out;
 240
 241         memset(&params, 0, sizeof(params));
 242
 243         params.cipher = key->conf.cipher;
 244
 245         switch (key->conf.cipher) {
 246         case WLAN_CIPHER_SUITE_TKIP:
 247                 iv32 = key->u.tkip.tx.iv32;
 248                 iv16 = key->u.tkip.tx.iv16;
 249
 250                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)
 251                         drv_get_tkip_seq(sdata->local,
 252                                          key->conf.hw_key_idx,
 253                                          &iv32, &iv16);
 254
 255                 seq[0] = iv16 & 0xff;
 256                 seq[1] = (iv16 >> 8) & 0xff;
 257                 seq[2] = iv32 & 0xff;
 258                 seq[3] = (iv32 >> 8) & 0xff;
 259                 seq[4] = (iv32 >> 16) & 0xff;
 260                 seq[5] = (iv32 >> 24) & 0xff;
 261                 params.seq = seq;
 262                 params.seq_len = 6;
 263                 break;
 264         case WLAN_CIPHER_SUITE_CCMP:
 265                 seq[0] = key->u.ccmp.tx_pn[5];
 266                 seq[1] = key->u.ccmp.tx_pn[4];
 267                 seq[2] = key->u.ccmp.tx_pn[3];
 268                 seq[3] = key->u.ccmp.tx_pn[2];
 269                 seq[4] = key->u.ccmp.tx_pn[1];
 270                 seq[5] = key->u.ccmp.tx_pn[0];
 271                 params.seq = seq;
 272                 params.seq_len = 6;
 273                 break;
 274         case WLAN_CIPHER_SUITE_AES_CMAC:
 275                 seq[0] = key->u.aes_cmac.tx_pn[5];
 276                 seq[1] = key->u.aes_cmac.tx_pn[4];
 277                 seq[2] = key->u.aes_cmac.tx_pn[3];
 278                 seq[3] = key->u.aes_cmac.tx_pn[2];
 279                 seq[4] = key->u.aes_cmac.tx_pn[1];
 280                 seq[5] = key->u.aes_cmac.tx_pn[0];
 281                 params.seq = seq;
 282                 params.seq_len = 6;
 283                 break;
 284         }
 285
 286         params.key = key->conf.key;
 287         params.key_len = key->conf.keylen;
 288
 289         callback(cookie, &params);
 290         err = 0;
 291
 292  out:
 293         rcu_read_unlock();
 294         return err;
 295 }
 296
 297 static int ieee80211_config_default_key(struct wiphy *wiphy,
 298                                         struct net_device *dev,
 299                                         u8 key_idx)
 300 {
 301         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 302
 303         ieee80211_set_default_key(sdata, key_idx);
 304
 305         return 0;
 306 }
 307
 308 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
 309                                              struct net_device *dev,
 310                                              u8 key_idx)
 311 {
 312         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 313
 314         ieee80211_set_default_mgmt_key(sdata, key_idx);
 315
 316         return 0;
 317 }
 318
 319 static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
 320 {
 321         struct ieee80211_sub_if_data *sdata = sta->sdata;
 322
 323         sinfo->generation = sdata->local->sta_generation;
 324
 325         sinfo->filled = STATION_INFO_INACTIVE_TIME |
 326                         STATION_INFO_RX_BYTES |
 327                         STATION_INFO_TX_BYTES |
 328                         STATION_INFO_RX_PACKETS |
 329                         STATION_INFO_TX_PACKETS |
 330                         STATION_INFO_TX_BITRATE;
 331
 332         sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx);
 333         sinfo->rx_bytes = sta->rx_bytes;
 334         sinfo->tx_bytes = sta->tx_bytes;
 335         sinfo->rx_packets = sta->rx_packets;
 336         sinfo->tx_packets = sta->tx_packets;
 337
 338         if ((sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) ||
 339             (sta->local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)) {
 340                 sinfo->filled |= STATION_INFO_SIGNAL;
 341                 sinfo->signal = (s8)sta->last_signal;
 342         }
 343
 344         sinfo->txrate.flags = 0;
 345         if (sta->last_tx_rate.flags & IEEE80211_TX_RC_MCS)
 346                 sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS;
 347         if (sta->last_tx_rate.flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 348                 sinfo->txrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 349         if (sta->last_tx_rate.flags & IEEE80211_TX_RC_SHORT_GI)
 350                 sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
 351
 352         if (!(sta->last_tx_rate.flags & IEEE80211_TX_RC_MCS)) {
 353                 struct ieee80211_supported_band *sband;
 354                 sband = sta->local->hw.wiphy->bands[
 355                                 sta->local->hw.conf.channel->band];
 356                 sinfo->txrate.legacy =
 357                         sband->bitrates[sta->last_tx_rate.idx].bitrate;
 358         } else
 359                 sinfo->txrate.mcs = sta->last_tx_rate.idx;
 360
 361         if (ieee80211_vif_is_mesh(&sdata->vif)) {
 362 #ifdef CONFIG_MAC80211_MESH
 363                 sinfo->filled |= STATION_INFO_LLID |
 364                                  STATION_INFO_PLID |
 365                                  STATION_INFO_PLINK_STATE;
 366
 367                 sinfo->llid = le16_to_cpu(sta->llid);
 368                 sinfo->plid = le16_to_cpu(sta->plid);
 369                 sinfo->plink_state = sta->plink_state;
 370 #endif
 371         }
 372 }
 373
 374
 375 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
 376                                  int idx, u8 *mac, struct station_info *sinfo)
 377 {
 378         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 379         struct sta_info *sta;
 380         int ret = -ENOENT;
 381
 382         rcu_read_lock();
 383
 384         sta = sta_info_get_by_idx(sdata, idx);
 385         if (sta) {
 386                 ret = 0;
 387                 memcpy(mac, sta->sta.addr, ETH_ALEN);
 388                 sta_set_sinfo(sta, sinfo);
 389         }
 390
 391         rcu_read_unlock();
 392
 393         return ret;
 394 }
 395
 396 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
 397                                  int idx, struct survey_info *survey)
 398 {
 399         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 400
 401         return drv_get_survey(local, idx, survey);
 402 }
 403
 404 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 405                                  u8 *mac, struct station_info *sinfo)
 406 {
 407         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 408         struct sta_info *sta;
 409         int ret = -ENOENT;
 410
 411         rcu_read_lock();
 412
 413         sta = sta_info_get_bss(sdata, mac);
 414         if (sta) {
 415                 ret = 0;
 416                 sta_set_sinfo(sta, sinfo);
 417         }
 418
 419         rcu_read_unlock();
 420
 421         return ret;
 422 }
 423
 424 /*
 425  * This handles both adding a beacon and setting new beacon info
 426  */
 427 static int ieee80211_config_beacon(struct ieee80211_sub_if_data *sdata,
 428                                    struct beacon_parameters *params)
 429 {
 430         struct beacon_data *new, *old;
 431         int new_head_len, new_tail_len;
 432         int size;
 433         int err = -EINVAL;
 434
 435         old = sdata->u.ap.beacon;
 436
 437         /* head must not be zero-length */
 438         if (params->head && !params->head_len)
 439                 return -EINVAL;
 440
 441         /*
 442          * This is a kludge. beacon interval should really be part
 443          * of the beacon information.
 444          */
 445         if (params->interval &&
 446             (sdata->vif.bss_conf.beacon_int != params->interval)) {
 447                 sdata->vif.bss_conf.beacon_int = params->interval;
 448                 ieee80211_bss_info_change_notify(sdata,
 449                                                  BSS_CHANGED_BEACON_INT);
 450         }
 451
 452         /* Need to have a beacon head if we don't have one yet */
 453         if (!params->head && !old)
 454                 return err;
 455
 456         /* sorry, no way to start beaconing without dtim period */
 457         if (!params->dtim_period && !old)
 458                 return err;
 459
 460         /* new or old head? */
 461         if (params->head)
 462                 new_head_len = params->head_len;
 463         else
 464                 new_head_len = old->head_len;
 465
 466         /* new or old tail? */
 467         if (params->tail || !old)
 468                 /* params->tail_len will be zero for !params->tail */
 469                 new_tail_len = params->tail_len;
 470         else
 471                 new_tail_len = old->tail_len;
 472
 473         size = sizeof(*new) + new_head_len + new_tail_len;
 474
 475         new = kzalloc(size, GFP_KERNEL);
 476         if (!new)
 477                 return -ENOMEM;
 478
 479         /* start filling the new info now */
 480
 481         /* new or old dtim period? */
 482         if (params->dtim_period)
 483                 new->dtim_period = params->dtim_period;
 484         else
 485                 new->dtim_period = old->dtim_period;
 486
 487         /*
 488          * pointers go into the block we allocated,
 489          * memory is | beacon_data | head | tail |
 490          */
 491         new->head = ((u8 *) new) + sizeof(*new);
 492         new->tail = new->head + new_head_len;
 493         new->head_len = new_head_len;
 494         new->tail_len = new_tail_len;
 495
 496         /* copy in head */
 497         if (params->head)
 498                 memcpy(new->head, params->head, new_head_len);
 499         else
 500                 memcpy(new->head, old->head, new_head_len);
 501
 502         /* copy in optional tail */
 503         if (params->tail)
 504                 memcpy(new->tail, params->tail, new_tail_len);
 505         else
 506                 if (old)
 507                         memcpy(new->tail, old->tail, new_tail_len);
 508
 509         sdata->vif.bss_conf.dtim_period = new->dtim_period;
 510
 511         rcu_assign_pointer(sdata->u.ap.beacon, new);
 512
 513         synchronize_rcu();
 514
 515         kfree(old);
 516
 517         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED |
 518                                                 BSS_CHANGED_BEACON);
 519         return 0;
 520 }
 521
 522 static int ieee80211_add_beacon(struct wiphy *wiphy, struct net_device *dev,
 523                                 struct beacon_parameters *params)
 524 {
 525         struct ieee80211_sub_if_data *sdata;
 526         struct beacon_data *old;
 527
 528         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 529
 530         old = sdata->u.ap.beacon;
 531
 532         if (old)
 533                 return -EALREADY;
 534
 535         return ieee80211_config_beacon(sdata, params);
 536 }
 537
 538 static int ieee80211_set_beacon(struct wiphy *wiphy, struct net_device *dev,
 539                                 struct beacon_parameters *params)
 540 {
 541         struct ieee80211_sub_if_data *sdata;
 542         struct beacon_data *old;
 543
 544         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 545
 546         old = sdata->u.ap.beacon;
 547
 548         if (!old)
 549                 return -ENOENT;
 550
 551         return ieee80211_config_beacon(sdata, params);
 552 }
 553
 554 static int ieee80211_del_beacon(struct wiphy *wiphy, struct net_device *dev)
 555 {
 556         struct ieee80211_sub_if_data *sdata;
 557         struct beacon_data *old;
 558
 559         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 560
 561         old = sdata->u.ap.beacon;
 562
 563         if (!old)
 564                 return -ENOENT;
 565
 566         rcu_assign_pointer(sdata->u.ap.beacon, NULL);
 567         synchronize_rcu();
 568         kfree(old);
 569
 570         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
 571         return 0;
 572 }
 573
 574 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
 575 struct iapp_layer2_update {
 576         u8 da[ETH_ALEN];        /* broadcast */
 577         u8 sa[ETH_ALEN];        /* STA addr */
 578         __be16 len;             /* 6 */
 579         u8 dsap;                /* 0 */
 580         u8 ssap;                /* 0 */
 581         u8 control;
 582         u8 xid_info[3];
 583 } __packed;
 584
 585 static void ieee80211_send_layer2_update(struct sta_info *sta)
 586 {
 587         struct iapp_layer2_update *msg;
 588         struct sk_buff *skb;
 589
 590         /* Send Level 2 Update Frame to update forwarding tables in layer 2
 591          * bridge devices */
 592
 593         skb = dev_alloc_skb(sizeof(*msg));
 594         if (!skb)
 595                 return;
 596         msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
 597
 598         /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
 599          * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
 600
 601         memset(msg->da, 0xff, ETH_ALEN);
 602         memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
 603         msg->len = htons(6);
 604         msg->dsap = 0;
 605         msg->ssap = 0x01;       /* NULL LSAP, CR Bit: Response */
 606         msg->control = 0xaf;    /* XID response lsb.1111F101.
 607                                  * F=0 (no poll command; unsolicited frame) */
 608         msg->xid_info[0] = 0x81;        /* XID format identifier */
 609         msg->xid_info[1] = 1;   /* LLC types/classes: Type 1 LLC */
 610         msg->xid_info[2] = 0;   /* XID sender's receive window size (RW) */
 611
 612         skb->dev = sta->sdata->dev;
 613         skb->protocol = eth_type_trans(skb, sta->sdata->dev);
 614         memset(skb->cb, 0, sizeof(skb->cb));
 615         netif_rx_ni(skb);
 616 }
 617
 618 static void sta_apply_parameters(struct ieee80211_local *local,
 619                                  struct sta_info *sta,
 620                                  struct station_parameters *params)
 621 {
 622         unsigned long flags;
 623         u32 rates;
 624         int i, j;
 625         struct ieee80211_supported_band *sband;
 626         struct ieee80211_sub_if_data *sdata = sta->sdata;
 627         u32 mask, set;
 628
 629         sband = local->hw.wiphy->bands[local->oper_channel->band];
 630
 631         spin_lock_irqsave(&sta->flaglock, flags);
 632         mask = params->sta_flags_mask;
 633         set = params->sta_flags_set;
 634
 635         if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
 636                 sta->flags &= ~WLAN_STA_AUTHORIZED;
 637                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
 638                         sta->flags |= WLAN_STA_AUTHORIZED;
 639         }
 640
 641         if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
 642                 sta->flags &= ~WLAN_STA_SHORT_PREAMBLE;
 643                 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
 644                         sta->flags |= WLAN_STA_SHORT_PREAMBLE;
 645         }
 646
 647         if (mask & BIT(NL80211_STA_FLAG_WME)) {
 648                 sta->flags &= ~WLAN_STA_WME;
 649                 if (set & BIT(NL80211_STA_FLAG_WME))
 650                         sta->flags |= WLAN_STA_WME;
 651         }
 652
 653         if (mask & BIT(NL80211_STA_FLAG_MFP)) {
 654                 sta->flags &= ~WLAN_STA_MFP;
 655                 if (set & BIT(NL80211_STA_FLAG_MFP))
 656                         sta->flags |= WLAN_STA_MFP;
 657         }
 658         spin_unlock_irqrestore(&sta->flaglock, flags);
 659
 660         /*
 661          * cfg80211 validates this (1-2007) and allows setting the AID
 662          * only when creating a new station entry
 663          */
 664         if (params->aid)
 665                 sta->sta.aid = params->aid;
 666
 667         /*
 668          * FIXME: updating the following information is racy when this
 669          *        function is called from ieee80211_change_station().
 670          *        However, all this information should be static so
 671          *        maybe we should just reject attemps to change it.
 672          */
 673
 674         if (params->listen_interval >= 0)
 675                 sta->listen_interval = params->listen_interval;
 676
 677         if (params->supported_rates) {
 678                 rates = 0;
 679
 680                 for (i = 0; i < params->supported_rates_len; i++) {
 681                         int rate = (params->supported_rates[i] & 0x7f) * 5;
 682                         for (j = 0; j < sband->n_bitrates; j++) {
 683                                 if (sband->bitrates[j].bitrate == rate)
 684                                         rates |= BIT(j);
 685                         }
 686                 }
 687                 sta->sta.supp_rates[local->oper_channel->band] = rates;
 688         }
 689
 690         if (params->ht_capa)
 691                 ieee80211_ht_cap_ie_to_sta_ht_cap(sband,
 692                                                   params->ht_capa,
 693                                                   &sta->sta.ht_cap);
 694
 695         if (ieee80211_vif_is_mesh(&sdata->vif) && params->plink_action) {
 696                 switch (params->plink_action) {
 697                 case PLINK_ACTION_OPEN:
 698                         mesh_plink_open(sta);
 699                         break;
 700                 case PLINK_ACTION_BLOCK:
 701                         mesh_plink_block(sta);
 702                         break;
 703                 }
 704         }
 705 }
 706
 707 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
 708                                  u8 *mac, struct station_parameters *params)
 709 {
 710         struct ieee80211_local *local = wiphy_priv(wiphy);
 711         struct sta_info *sta;
 712         struct ieee80211_sub_if_data *sdata;
 713         int err;
 714         int layer2_update;
 715
 716         if (params->vlan) {
 717                 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
 718
 719                 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
 720                     sdata->vif.type != NL80211_IFTYPE_AP)
 721                         return -EINVAL;
 722         } else
 723                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 724
 725         if (compare_ether_addr(mac, sdata->vif.addr) == 0)
 726                 return -EINVAL;
 727
 728         if (is_multicast_ether_addr(mac))
 729                 return -EINVAL;
 730
 731         sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
 732         if (!sta)
 733                 return -ENOMEM;
 734
 735         sta->flags = WLAN_STA_AUTH | WLAN_STA_ASSOC;
 736
 737         sta_apply_parameters(local, sta, params);
 738
 739         rate_control_rate_init(sta);
 740
 741         layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
 742                 sdata->vif.type == NL80211_IFTYPE_AP;
 743
 744         err = sta_info_insert_rcu(sta);
 745         if (err) {
 746                 rcu_read_unlock();
 747                 return err;
 748         }
 749
 750         if (layer2_update)
 751                 ieee80211_send_layer2_update(sta);
 752
 753         rcu_read_unlock();
 754
 755         return 0;
 756 }
 757
 758 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
 759                                  u8 *mac)
 760 {
 761         struct ieee80211_local *local = wiphy_priv(wiphy);
 762         struct ieee80211_sub_if_data *sdata;
 763
 764         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 765
 766         if (mac)
 767                 return sta_info_destroy_addr_bss(sdata, mac);
 768
 769         sta_info_flush(local, sdata);
 770         return 0;
 771 }
 772
 773 static int ieee80211_change_station(struct wiphy *wiphy,
 774                                     struct net_device *dev,
 775                                     u8 *mac,
 776                                     struct station_parameters *params)
 777 {
 778         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 779         struct ieee80211_local *local = wiphy_priv(wiphy);
 780         struct sta_info *sta;
 781         struct ieee80211_sub_if_data *vlansdata;
 782
 783         rcu_read_lock();
 784
 785         sta = sta_info_get_bss(sdata, mac);
 786         if (!sta) {
 787                 rcu_read_unlock();
 788                 return -ENOENT;
 789         }
 790
 791         if (params->vlan && params->vlan != sta->sdata->dev) {
 792                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
 793
 794                 if (vlansdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
 795                     vlansdata->vif.type != NL80211_IFTYPE_AP) {
 796                         rcu_read_unlock();
 797                         return -EINVAL;
 798                 }
 799
 800                 if (params->vlan->ieee80211_ptr->use_4addr) {
 801                         if (vlansdata->u.vlan.sta) {
 802                                 rcu_read_unlock();
 803                                 return -EBUSY;
 804                         }
 805
 806                         rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
 807                 }
 808
 809                 sta->sdata = vlansdata;
 810                 ieee80211_send_layer2_update(sta);
 811         }
 812
 813         sta_apply_parameters(local, sta, params);
 814
 815         rcu_read_unlock();
 816
 817         return 0;
 818 }
 819
 820 #ifdef CONFIG_MAC80211_MESH
 821 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
 822                                  u8 *dst, u8 *next_hop)
 823 {
 824         struct ieee80211_sub_if_data *sdata;
 825         struct mesh_path *mpath;
 826         struct sta_info *sta;
 827         int err;
 828
 829         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 830
 831         rcu_read_lock();
 832         sta = sta_info_get(sdata, next_hop);
 833         if (!sta) {
 834                 rcu_read_unlock();
 835                 return -ENOENT;
 836         }
 837
 838         err = mesh_path_add(dst, sdata);
 839         if (err) {
 840                 rcu_read_unlock();
 841                 return err;
 842         }
 843
 844         mpath = mesh_path_lookup(dst, sdata);
 845         if (!mpath) {
 846                 rcu_read_unlock();
 847                 return -ENXIO;
 848         }
 849         mesh_path_fix_nexthop(mpath, sta);
 850
 851         rcu_read_unlock();
 852         return 0;
 853 }
 854
 855 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
 856                                  u8 *dst)
 857 {
 858         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 859
 860         if (dst)
 861                 return mesh_path_del(dst, sdata);
 862
 863         mesh_path_flush(sdata);
 864         return 0;
 865 }
 866
 867 static int ieee80211_change_mpath(struct wiphy *wiphy,
 868                                     struct net_device *dev,
 869                                     u8 *dst, u8 *next_hop)
 870 {
 871         struct ieee80211_sub_if_data *sdata;
 872         struct mesh_path *mpath;
 873         struct sta_info *sta;
 874
 875         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 876
 877         rcu_read_lock();
 878
 879         sta = sta_info_get(sdata, next_hop);
 880         if (!sta) {
 881                 rcu_read_unlock();
 882                 return -ENOENT;
 883         }
 884
 885         mpath = mesh_path_lookup(dst, sdata);
 886         if (!mpath) {
 887                 rcu_read_unlock();
 888                 return -ENOENT;
 889         }
 890
 891         mesh_path_fix_nexthop(mpath, sta);
 892
 893         rcu_read_unlock();
 894         return 0;
 895 }
 896
 897 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
 898                             struct mpath_info *pinfo)
 899 {
 900         if (mpath->next_hop)
 901                 memcpy(next_hop, mpath->next_hop->sta.addr, ETH_ALEN);
 902         else
 903                 memset(next_hop, 0, ETH_ALEN);
 904
 905         pinfo->generation = mesh_paths_generation;
 906
 907         pinfo->filled = MPATH_INFO_FRAME_QLEN |
 908                         MPATH_INFO_SN |
 909                         MPATH_INFO_METRIC |
 910                         MPATH_INFO_EXPTIME |
 911                         MPATH_INFO_DISCOVERY_TIMEOUT |
 912                         MPATH_INFO_DISCOVERY_RETRIES |
 913                         MPATH_INFO_FLAGS;
 914
 915         pinfo->frame_qlen = mpath->frame_queue.qlen;
 916         pinfo->sn = mpath->sn;
 917         pinfo->metric = mpath->metric;
 918         if (time_before(jiffies, mpath->exp_time))
 919                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
 920         pinfo->discovery_timeout =
 921                         jiffies_to_msecs(mpath->discovery_timeout);
 922         pinfo->discovery_retries = mpath->discovery_retries;
 923         pinfo->flags = 0;
 924         if (mpath->flags & MESH_PATH_ACTIVE)
 925                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
 926         if (mpath->flags & MESH_PATH_RESOLVING)
 927                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
 928         if (mpath->flags & MESH_PATH_SN_VALID)
 929                 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
 930         if (mpath->flags & MESH_PATH_FIXED)
 931                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
 932         if (mpath->flags & MESH_PATH_RESOLVING)
 933                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
 934
 935         pinfo->flags = mpath->flags;
 936 }
 937
 938 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
 939                                u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
 940
 941 {
 942         struct ieee80211_sub_if_data *sdata;
 943         struct mesh_path *mpath;
 944
 945         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 946
 947         rcu_read_lock();
 948         mpath = mesh_path_lookup(dst, sdata);
 949         if (!mpath) {
 950                 rcu_read_unlock();
 951                 return -ENOENT;
 952         }
 953         memcpy(dst, mpath->dst, ETH_ALEN);
 954         mpath_set_pinfo(mpath, next_hop, pinfo);
 955         rcu_read_unlock();
 956         return 0;
 957 }
 958
 959 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
 960                                  int idx, u8 *dst, u8 *next_hop,
 961                                  struct mpath_info *pinfo)
 962 {
 963         struct ieee80211_sub_if_data *sdata;
 964         struct mesh_path *mpath;
 965
 966         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 967
 968         rcu_read_lock();
 969         mpath = mesh_path_lookup_by_idx(idx, sdata);
 970         if (!mpath) {
 971                 rcu_read_unlock();
 972                 return -ENOENT;
 973         }
 974         memcpy(dst, mpath->dst, ETH_ALEN);
 975         mpath_set_pinfo(mpath, next_hop, pinfo);
 976         rcu_read_unlock();
 977         return 0;
 978 }
 979
 980 static int ieee80211_get_mesh_params(struct wiphy *wiphy,
 981                                 struct net_device *dev,
 982                                 struct mesh_config *conf)
 983 {
 984         struct ieee80211_sub_if_data *sdata;
 985         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 986
 987         memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
 988         return 0;
 989 }
 990
 991 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
 992 {
 993         return (mask >> (parm-1)) & 0x1;
 994 }
 995
 996 static int ieee80211_set_mesh_params(struct wiphy *wiphy,
 997                                 struct net_device *dev,
 998                                 const struct mesh_config *nconf, u32 mask)
 999 {
1000         struct mesh_config *conf;
1001         struct ieee80211_sub_if_data *sdata;
1002         struct ieee80211_if_mesh *ifmsh;
1003
1004         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1005         ifmsh = &sdata->u.mesh;
1006
1007         /* Set the config options which we are interested in setting */
1008         conf = &(sdata->u.mesh.mshcfg);
1009         if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1010                 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1011         if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1012                 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1013         if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1014                 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1015         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1016                 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1017         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1018                 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1019         if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1020                 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1021         if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask))
1022                 conf->auto_open_plinks = nconf->auto_open_plinks;
1023         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1024                 conf->dot11MeshHWMPmaxPREQretries =
1025                         nconf->dot11MeshHWMPmaxPREQretries;
1026         if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1027                 conf->path_refresh_time = nconf->path_refresh_time;
1028         if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1029                 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1030         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1031                 conf->dot11MeshHWMPactivePathTimeout =
1032                         nconf->dot11MeshHWMPactivePathTimeout;
1033         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1034                 conf->dot11MeshHWMPpreqMinInterval =
1035                         nconf->dot11MeshHWMPpreqMinInterval;
1036         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1037                            mask))
1038                 conf->dot11MeshHWMPnetDiameterTraversalTime =
1039                         nconf->dot11MeshHWMPnetDiameterTraversalTime;
1040         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1041                 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1042                 ieee80211_mesh_root_setup(ifmsh);
1043         }
1044         return 0;
1045 }
1046
1047 #endif
1048
1049 static int ieee80211_change_bss(struct wiphy *wiphy,
1050                                 struct net_device *dev,
1051                                 struct bss_parameters *params)
1052 {
1053         struct ieee80211_sub_if_data *sdata;
1054         u32 changed = 0;
1055
1056         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1057
1058         if (params->use_cts_prot >= 0) {
1059                 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1060                 changed |= BSS_CHANGED_ERP_CTS_PROT;
1061         }
1062         if (params->use_short_preamble >= 0) {
1063                 sdata->vif.bss_conf.use_short_preamble =
1064                         params->use_short_preamble;
1065                 changed |= BSS_CHANGED_ERP_PREAMBLE;
1066         }
1067
1068         if (!sdata->vif.bss_conf.use_short_slot &&
1069             sdata->local->hw.conf.channel->band == IEEE80211_BAND_5GHZ) {
1070                 sdata->vif.bss_conf.use_short_slot = true;
1071                 changed |= BSS_CHANGED_ERP_SLOT;
1072         }
1073
1074         if (params->use_short_slot_time >= 0) {
1075                 sdata->vif.bss_conf.use_short_slot =
1076                         params->use_short_slot_time;
1077                 changed |= BSS_CHANGED_ERP_SLOT;
1078         }
1079
1080         if (params->basic_rates) {
1081                 int i, j;
1082                 u32 rates = 0;
1083                 struct ieee80211_local *local = wiphy_priv(wiphy);
1084                 struct ieee80211_supported_band *sband =
1085                         wiphy->bands[local->oper_channel->band];
1086
1087                 for (i = 0; i < params->basic_rates_len; i++) {
1088                         int rate = (params->basic_rates[i] & 0x7f) * 5;
1089                         for (j = 0; j < sband->n_bitrates; j++) {
1090                                 if (sband->bitrates[j].bitrate == rate)
1091                                         rates |= BIT(j);
1092                         }
1093                 }
1094                 sdata->vif.bss_conf.basic_rates = rates;
1095                 changed |= BSS_CHANGED_BASIC_RATES;
1096         }
1097
1098         if (params->ap_isolate >= 0) {
1099                 if (params->ap_isolate)
1100                         sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1101                 else
1102                         sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1103         }
1104
1105         ieee80211_bss_info_change_notify(sdata, changed);
1106
1107         return 0;
1108 }
1109
1110 static int ieee80211_set_txq_params(struct wiphy *wiphy,
1111                                     struct ieee80211_txq_params *params)
1112 {
1113         struct ieee80211_local *local = wiphy_priv(wiphy);
1114         struct ieee80211_tx_queue_params p;
1115
1116         if (!local->ops->conf_tx)
1117                 return -EOPNOTSUPP;
1118
1119         memset(&p, 0, sizeof(p));
1120         p.aifs = params->aifs;
1121         p.cw_max = params->cwmax;
1122         p.cw_min = params->cwmin;
1123         p.txop = params->txop;
1124
1125         /*
1126          * Setting tx queue params disables u-apsd because it's only
1127          * called in master mode.
1128          */
1129         p.uapsd = false;
1130
1131         if (drv_conf_tx(local, params->queue, &p)) {
1132                 wiphy_debug(local->hw.wiphy,
1133                             "failed to set TX queue parameters for queue %d\n",
1134                             params->queue);
1135                 return -EINVAL;
1136         }
1137
1138         return 0;
1139 }
1140
1141 static int ieee80211_set_channel(struct wiphy *wiphy,
1142                                  struct net_device *netdev,
1143                                  struct ieee80211_channel *chan,
1144                                  enum nl80211_channel_type channel_type)
1145 {
1146         struct ieee80211_local *local = wiphy_priv(wiphy);
1147         struct ieee80211_sub_if_data *sdata = NULL;
1148
1149         if (netdev)
1150                 sdata = IEEE80211_DEV_TO_SUB_IF(netdev);
1151
1152         switch (ieee80211_get_channel_mode(local, NULL)) {
1153         case CHAN_MODE_HOPPING:
1154                 return -EBUSY;
1155         case CHAN_MODE_FIXED:
1156                 if (local->oper_channel != chan)
1157                         return -EBUSY;
1158                 if (!sdata && local->_oper_channel_type == channel_type)
1159                         return 0;
1160                 break;
1161         case CHAN_MODE_UNDEFINED:
1162                 break;
1163         }
1164
1165         local->oper_channel = chan;
1166
1167         if (!ieee80211_set_channel_type(local, sdata, channel_type))
1168                 return -EBUSY;
1169
1170         ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL);
1171         if (sdata && sdata->vif.type != NL80211_IFTYPE_MONITOR)
1172                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1173
1174         return 0;
1175 }
1176
1177 #ifdef CONFIG_PM
1178 static int ieee80211_suspend(struct wiphy *wiphy)
1179 {
1180         return __ieee80211_suspend(wiphy_priv(wiphy));
1181 }
1182
1183 static int ieee80211_resume(struct wiphy *wiphy)
1184 {
1185         return __ieee80211_resume(wiphy_priv(wiphy));
1186 }
1187 #else
1188 #define ieee80211_suspend NULL
1189 #define ieee80211_resume NULL
1190 #endif
1191
1192 static int ieee80211_scan(struct wiphy *wiphy,
1193                           struct net_device *dev,
1194                           struct cfg80211_scan_request *req)
1195 {
1196         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1197
1198         switch (ieee80211_vif_type_p2p(&sdata->vif)) {
1199         case NL80211_IFTYPE_STATION:
1200         case NL80211_IFTYPE_ADHOC:
1201         case NL80211_IFTYPE_MESH_POINT:
1202         case NL80211_IFTYPE_P2P_CLIENT:
1203                 break;
1204         case NL80211_IFTYPE_P2P_GO:
1205                 if (sdata->local->ops->hw_scan)
1206                         break;
1207                 /* FIXME: implement NoA while scanning in software */
1208                 return -EOPNOTSUPP;
1209         case NL80211_IFTYPE_AP:
1210                 if (sdata->u.ap.beacon)
1211                         return -EOPNOTSUPP;
1212                 break;
1213         default:
1214                 return -EOPNOTSUPP;
1215         }
1216
1217         return ieee80211_request_scan(sdata, req);
1218 }
1219
1220 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
1221                           struct cfg80211_auth_request *req)
1222 {
1223         return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
1224 }
1225
1226 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
1227                            struct cfg80211_assoc_request *req)
1228 {
1229         struct ieee80211_local *local = wiphy_priv(wiphy);
1230         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1231
1232         switch (ieee80211_get_channel_mode(local, sdata)) {
1233         case CHAN_MODE_HOPPING:
1234                 return -EBUSY;
1235         case CHAN_MODE_FIXED:
1236                 if (local->oper_channel == req->bss->channel)
1237                         break;
1238                 return -EBUSY;
1239         case CHAN_MODE_UNDEFINED:
1240                 break;
1241         }
1242
1243         return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
1244 }
1245
1246 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
1247                             struct cfg80211_deauth_request *req,
1248                             void *cookie)
1249 {
1250         return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev),
1251                                     req, cookie);
1252 }
1253
1254 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
1255                               struct cfg80211_disassoc_request *req,
1256                               void *cookie)
1257 {
1258         return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev),
1259                                       req, cookie);
1260 }
1261
1262 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1263                                struct cfg80211_ibss_params *params)
1264 {
1265         struct ieee80211_local *local = wiphy_priv(wiphy);
1266         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1267
1268         switch (ieee80211_get_channel_mode(local, sdata)) {
1269         case CHAN_MODE_HOPPING:
1270                 return -EBUSY;
1271         case CHAN_MODE_FIXED:
1272                 if (!params->channel_fixed)
1273                         return -EBUSY;
1274                 if (local->oper_channel == params->channel)
1275                         break;
1276                 return -EBUSY;
1277         case CHAN_MODE_UNDEFINED:
1278                 break;
1279         }
1280
1281         return ieee80211_ibss_join(sdata, params);
1282 }
1283
1284 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
1285 {
1286         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1287
1288         return ieee80211_ibss_leave(sdata);
1289 }
1290
1291 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1292 {
1293         struct ieee80211_local *local = wiphy_priv(wiphy);
1294         int err;
1295
1296         if (changed & WIPHY_PARAM_COVERAGE_CLASS) {
1297                 err = drv_set_coverage_class(local, wiphy->coverage_class);
1298
1299                 if (err)
1300                         return err;
1301         }
1302
1303         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1304                 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
1305
1306                 if (err)
1307                         return err;
1308         }
1309
1310         if (changed & WIPHY_PARAM_RETRY_SHORT)
1311                 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
1312         if (changed & WIPHY_PARAM_RETRY_LONG)
1313                 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
1314         if (changed &
1315             (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
1316                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
1317
1318         return 0;
1319 }
1320
1321 static int ieee80211_set_tx_power(struct wiphy *wiphy,
1322                                   enum nl80211_tx_power_setting type, int mbm)
1323 {
1324         struct ieee80211_local *local = wiphy_priv(wiphy);
1325         struct ieee80211_channel *chan = local->hw.conf.channel;
1326         u32 changes = 0;
1327
1328         switch (type) {
1329         case NL80211_TX_POWER_AUTOMATIC:
1330                 local->user_power_level = -1;
1331                 break;
1332         case NL80211_TX_POWER_LIMITED:
1333                 if (mbm < 0 || (mbm % 100))
1334                         return -EOPNOTSUPP;
1335                 local->user_power_level = MBM_TO_DBM(mbm);
1336                 break;
1337         case NL80211_TX_POWER_FIXED:
1338                 if (mbm < 0 || (mbm % 100))
1339                         return -EOPNOTSUPP;
1340                 /* TODO: move to cfg80211 when it knows the channel */
1341                 if (MBM_TO_DBM(mbm) > chan->max_power)
1342                         return -EINVAL;
1343                 local->user_power_level = MBM_TO_DBM(mbm);
1344                 break;
1345         }
1346
1347         ieee80211_hw_config(local, changes);
1348
1349         return 0;
1350 }
1351
1352 static int ieee80211_get_tx_power(struct wiphy *wiphy, int *dbm)
1353 {
1354         struct ieee80211_local *local = wiphy_priv(wiphy);
1355
1356         *dbm = local->hw.conf.power_level;
1357
1358         return 0;
1359 }
1360
1361 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
1362                                   u8 *addr)
1363 {
1364         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1365
1366         memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
1367
1368         return 0;
1369 }
1370
1371 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
1372 {
1373         struct ieee80211_local *local = wiphy_priv(wiphy);
1374
1375         drv_rfkill_poll(local);
1376 }
1377
1378 #ifdef CONFIG_NL80211_TESTMODE
1379 static int ieee80211_testmode_cmd(struct wiphy *wiphy, void *data, int len)
1380 {
1381         struct ieee80211_local *local = wiphy_priv(wiphy);
1382
1383         if (!local->ops->testmode_cmd)
1384                 return -EOPNOTSUPP;
1385
1386         return local->ops->testmode_cmd(&local->hw, data, len);
1387 }
1388 #endif
1389
1390 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
1391                              enum ieee80211_smps_mode smps_mode)
1392 {
1393         const u8 *ap;
1394         enum ieee80211_smps_mode old_req;
1395         int err;
1396
1397         old_req = sdata->u.mgd.req_smps;
1398         sdata->u.mgd.req_smps = smps_mode;
1399
1400         if (old_req == smps_mode &&
1401             smps_mode != IEEE80211_SMPS_AUTOMATIC)
1402                 return 0;
1403
1404         /*
1405          * If not associated, or current association is not an HT
1406          * association, there's no need to send an action frame.
1407          */
1408         if (!sdata->u.mgd.associated ||
1409             sdata->vif.bss_conf.channel_type == NL80211_CHAN_NO_HT) {
1410                 mutex_lock(&sdata->local->iflist_mtx);
1411                 ieee80211_recalc_smps(sdata->local);
1412                 mutex_unlock(&sdata->local->iflist_mtx);
1413                 return 0;
1414         }
1415
1416         ap = sdata->u.mgd.associated->bssid;
1417
1418         if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
1419                 if (sdata->u.mgd.powersave)
1420                         smps_mode = IEEE80211_SMPS_DYNAMIC;
1421                 else
1422                         smps_mode = IEEE80211_SMPS_OFF;
1423         }
1424
1425         /* send SM PS frame to AP */
1426         err = ieee80211_send_smps_action(sdata, smps_mode,
1427                                          ap, ap);
1428         if (err)
1429                 sdata->u.mgd.req_smps = old_req;
1430
1431         return err;
1432 }
1433
1434 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
1435                                     bool enabled, int timeout)
1436 {
1437         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1438         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1439
1440         if (sdata->vif.type != NL80211_IFTYPE_STATION)
1441                 return -EOPNOTSUPP;
1442
1443         if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
1444                 return -EOPNOTSUPP;
1445
1446         if (enabled == sdata->u.mgd.powersave &&
1447             timeout == local->dynamic_ps_forced_timeout)
1448                 return 0;
1449
1450         sdata->u.mgd.powersave = enabled;
1451         local->dynamic_ps_forced_timeout = timeout;
1452
1453         /* no change, but if automatic follow powersave */
1454         mutex_lock(&sdata->u.mgd.mtx);
1455         __ieee80211_request_smps(sdata, sdata->u.mgd.req_smps);
1456         mutex_unlock(&sdata->u.mgd.mtx);
1457
1458         if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
1459                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1460
1461         ieee80211_recalc_ps(local, -1);
1462
1463         return 0;
1464 }
1465
1466 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
1467                                          struct net_device *dev,
1468                                          s32 rssi_thold, u32 rssi_hyst)
1469 {
1470         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1471         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1472         struct ieee80211_vif *vif = &sdata->vif;
1473         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
1474
1475         if (rssi_thold == bss_conf->cqm_rssi_thold &&
1476             rssi_hyst == bss_conf->cqm_rssi_hyst)
1477                 return 0;
1478
1479         bss_conf->cqm_rssi_thold = rssi_thold;
1480         bss_conf->cqm_rssi_hyst = rssi_hyst;
1481
1482         if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_CQM_RSSI)) {
1483                 if (sdata->vif.type != NL80211_IFTYPE_STATION)
1484                         return -EOPNOTSUPP;
1485                 return 0;
1486         }
1487
1488         /* tell the driver upon association, unless already associated */
1489         if (sdata->u.mgd.associated)
1490                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
1491
1492         return 0;
1493 }
1494
1495 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
1496                                       struct net_device *dev,
1497                                       const u8 *addr,
1498                                       const struct cfg80211_bitrate_mask *mask)
1499 {
1500         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1501         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1502         int i;
1503
1504         /*
1505          * This _could_ be supported by providing a hook for
1506          * drivers for this function, but at this point it
1507          * doesn't seem worth bothering.
1508          */
1509         if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL)
1510                 return -EOPNOTSUPP;
1511
1512
1513         for (i = 0; i < IEEE80211_NUM_BANDS; i++)
1514                 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
1515
1516         return 0;
1517 }
1518
1519 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
1520                                        struct net_device *dev,
1521                                        struct ieee80211_channel *chan,
1522                                        enum nl80211_channel_type channel_type,
1523                                        unsigned int duration,
1524                                        u64 *cookie)
1525 {
1526         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1527
1528         return ieee80211_wk_remain_on_channel(sdata, chan, channel_type,
1529                                               duration, cookie);
1530 }
1531
1532 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
1533                                               struct net_device *dev,
1534                                               u64 cookie)
1535 {
1536         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1537
1538         return ieee80211_wk_cancel_remain_on_channel(sdata, cookie);
1539 }
1540
1541 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct net_device *dev,
1542                              struct ieee80211_channel *chan,
1543                              enum nl80211_channel_type channel_type,
1544                              bool channel_type_valid,
1545                              const u8 *buf, size_t len, u64 *cookie)
1546 {
1547         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1548         struct ieee80211_local *local = sdata->local;
1549         struct sk_buff *skb;
1550         struct sta_info *sta;
1551         const struct ieee80211_mgmt *mgmt = (void *)buf;
1552         u32 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
1553                     IEEE80211_TX_CTL_REQ_TX_STATUS;
1554
1555         /* Check that we are on the requested channel for transmission */
1556         if (chan != local->tmp_channel &&
1557             chan != local->oper_channel)
1558                 return -EBUSY;
1559         if (channel_type_valid &&
1560             (channel_type != local->tmp_channel_type &&
1561              channel_type != local->_oper_channel_type))
1562                 return -EBUSY;
1563
1564         switch (sdata->vif.type) {
1565         case NL80211_IFTYPE_ADHOC:
1566         case NL80211_IFTYPE_AP:
1567         case NL80211_IFTYPE_AP_VLAN:
1568         case NL80211_IFTYPE_P2P_GO:
1569                 if (!ieee80211_is_action(mgmt->frame_control) ||
1570                     mgmt->u.action.category == WLAN_CATEGORY_PUBLIC)
1571                         break;
1572                 rcu_read_lock();
1573                 sta = sta_info_get(sdata, mgmt->da);
1574                 rcu_read_unlock();
1575                 if (!sta)
1576                         return -ENOLINK;
1577                 break;
1578         case NL80211_IFTYPE_STATION:
1579         case NL80211_IFTYPE_P2P_CLIENT:
1580                 break;
1581         default:
1582                 return -EOPNOTSUPP;
1583         }
1584
1585         skb = dev_alloc_skb(local->hw.extra_tx_headroom + len);
1586         if (!skb)
1587                 return -ENOMEM;
1588         skb_reserve(skb, local->hw.extra_tx_headroom);
1589
1590         memcpy(skb_put(skb, len), buf, len);
1591
1592         IEEE80211_SKB_CB(skb)->flags = flags;
1593
1594         skb->dev = sdata->dev;
1595         ieee80211_tx_skb(sdata, skb);
1596
1597         *cookie = (unsigned long) skb;
1598         return 0;
1599 }
1600
1601 struct cfg80211_ops mac80211_config_ops = {
1602         .add_virtual_intf = ieee80211_add_iface,
1603         .del_virtual_intf = ieee80211_del_iface,
1604         .change_virtual_intf = ieee80211_change_iface,
1605         .add_key = ieee80211_add_key,
1606         .del_key = ieee80211_del_key,
1607         .get_key = ieee80211_get_key,
1608         .set_default_key = ieee80211_config_default_key,
1609         .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
1610         .add_beacon = ieee80211_add_beacon,
1611         .set_beacon = ieee80211_set_beacon,
1612         .del_beacon = ieee80211_del_beacon,
1613         .add_station = ieee80211_add_station,
1614         .del_station = ieee80211_del_station,
1615         .change_station = ieee80211_change_station,
1616         .get_station = ieee80211_get_station,
1617         .dump_station = ieee80211_dump_station,
1618         .dump_survey = ieee80211_dump_survey,
1619 #ifdef CONFIG_MAC80211_MESH
1620         .add_mpath = ieee80211_add_mpath,
1621         .del_mpath = ieee80211_del_mpath,
1622         .change_mpath = ieee80211_change_mpath,
1623         .get_mpath = ieee80211_get_mpath,
1624         .dump_mpath = ieee80211_dump_mpath,
1625         .set_mesh_params = ieee80211_set_mesh_params,
1626         .get_mesh_params = ieee80211_get_mesh_params,
1627 #endif
1628         .change_bss = ieee80211_change_bss,
1629         .set_txq_params = ieee80211_set_txq_params,
1630         .set_channel = ieee80211_set_channel,
1631         .suspend = ieee80211_suspend,
1632         .resume = ieee80211_resume,
1633         .scan = ieee80211_scan,
1634         .auth = ieee80211_auth,
1635         .assoc = ieee80211_assoc,
1636         .deauth = ieee80211_deauth,
1637         .disassoc = ieee80211_disassoc,
1638         .join_ibss = ieee80211_join_ibss,
1639         .leave_ibss = ieee80211_leave_ibss,
1640         .set_wiphy_params = ieee80211_set_wiphy_params,
1641         .set_tx_power = ieee80211_set_tx_power,
1642         .get_tx_power = ieee80211_get_tx_power,
1643         .set_wds_peer = ieee80211_set_wds_peer,
1644         .rfkill_poll = ieee80211_rfkill_poll,
1645         CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
1646         .set_power_mgmt = ieee80211_set_power_mgmt,
1647         .set_bitrate_mask = ieee80211_set_bitrate_mask,
1648         .remain_on_channel = ieee80211_remain_on_channel,
1649         .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
1650         .mgmt_tx = ieee80211_mgmt_tx,
1651         .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
1652 };