net/mac80211/cfg.c

   1 /*
   2  * mac80211 configuration hooks for cfg80211
   3  *
   4  * Copyright 2006-2010  Johannes Berg <[email protected]>
   5  * Copyright 2013-2015  Intel Mobile Communications GmbH
   6  * Copyright (C) 2015-2017 Intel Deutschland GmbH
   7  * Copyright (C) 2018 Intel Corporation
   8  *
   9  * This file is GPLv2 as found in COPYING.
  10  */
  11
  12 #include <linux/ieee80211.h>
  13 #include <linux/nl80211.h>
  14 #include <linux/rtnetlink.h>
  15 #include <linux/slab.h>
  16 #include <net/net_namespace.h>
  17 #include <linux/rcupdate.h>
  18 #include <linux/if_ether.h>
  19 #include <net/cfg80211.h>
  20 #include "ieee80211_i.h"
  21 #include "driver-ops.h"
  22 #include "rate.h"
  23 #include "mesh.h"
  24 #include "wme.h"
  25
  26 static void ieee80211_set_mu_mimo_follow(struct ieee80211_sub_if_data *sdata,
  27                                          struct vif_params *params)
  28 {
  29         bool mu_mimo_groups = false;
  30         bool mu_mimo_follow = false;
  31
  32         if (params->vht_mumimo_groups) {
  33                 u64 membership;
  34
  35                 BUILD_BUG_ON(sizeof(membership) != WLAN_MEMBERSHIP_LEN);
  36
  37                 memcpy(sdata->vif.bss_conf.mu_group.membership,
  38                        params->vht_mumimo_groups, WLAN_MEMBERSHIP_LEN);
  39                 memcpy(sdata->vif.bss_conf.mu_group.position,
  40                        params->vht_mumimo_groups + WLAN_MEMBERSHIP_LEN,
  41                        WLAN_USER_POSITION_LEN);
  42                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_MU_GROUPS);
  43                 /* don't care about endianness - just check for 0 */
  44                 memcpy(&membership, params->vht_mumimo_groups,
  45                        WLAN_MEMBERSHIP_LEN);
  46                 mu_mimo_groups = membership != 0;
  47         }
  48
  49         if (params->vht_mumimo_follow_addr) {
  50                 mu_mimo_follow =
  51                         is_valid_ether_addr(params->vht_mumimo_follow_addr);
  52                 ether_addr_copy(sdata->u.mntr.mu_follow_addr,
  53                                 params->vht_mumimo_follow_addr);
  54         }
  55
  56         sdata->vif.mu_mimo_owner = mu_mimo_groups || mu_mimo_follow;
  57 }
  58
  59 static int ieee80211_set_mon_options(struct ieee80211_sub_if_data *sdata,
  60                                      struct vif_params *params)
  61 {
  62         struct ieee80211_local *local = sdata->local;
  63         struct ieee80211_sub_if_data *monitor_sdata;
  64
  65         /* check flags first */
  66         if (params->flags && ieee80211_sdata_running(sdata)) {
  67                 u32 mask = MONITOR_FLAG_COOK_FRAMES | MONITOR_FLAG_ACTIVE;
  68
  69                 /*
  70                  * Prohibit MONITOR_FLAG_COOK_FRAMES and
  71                  * MONITOR_FLAG_ACTIVE to be changed while the
  72                  * interface is up.
  73                  * Else we would need to add a lot of cruft
  74                  * to update everything:
  75                  *      cooked_mntrs, monitor and all fif_* counters
  76                  *      reconfigure hardware
  77                  */
  78                 if ((params->flags & mask) != (sdata->u.mntr.flags & mask))
  79                         return -EBUSY;
  80         }
  81
  82         /* also validate MU-MIMO change */
  83         monitor_sdata = rtnl_dereference(local->monitor_sdata);
  84
  85         if (!monitor_sdata &&
  86             (params->vht_mumimo_groups || params->vht_mumimo_follow_addr))
  87                 return -EOPNOTSUPP;
  88
  89         /* apply all changes now - no failures allowed */
  90
  91         if (monitor_sdata)
  92                 ieee80211_set_mu_mimo_follow(monitor_sdata, params);
  93
  94         if (params->flags) {
  95                 if (ieee80211_sdata_running(sdata)) {
  96                         ieee80211_adjust_monitor_flags(sdata, -1);
  97                         sdata->u.mntr.flags = params->flags;
  98                         ieee80211_adjust_monitor_flags(sdata, 1);
  99
 100                         ieee80211_configure_filter(local);
 101                 } else {
 102                         /*
 103                          * Because the interface is down, ieee80211_do_stop
 104                          * and ieee80211_do_open take care of "everything"
 105                          * mentioned in the comment above.
 106                          */
 107                         sdata->u.mntr.flags = params->flags;
 108                 }
 109         }
 110
 111         return 0;
 112 }
 113
 114 static struct wireless_dev *ieee80211_add_iface(struct wiphy *wiphy,
 115                                                 const char *name,
 116                                                 unsigned char name_assign_type,
 117                                                 enum nl80211_iftype type,
 118                                                 struct vif_params *params)
 119 {
 120         struct ieee80211_local *local = wiphy_priv(wiphy);
 121         struct wireless_dev *wdev;
 122         struct ieee80211_sub_if_data *sdata;
 123         int err;
 124
 125         err = ieee80211_if_add(local, name, name_assign_type, &wdev, type, params);
 126         if (err)
 127                 return ERR_PTR(err);
 128
 129         sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 130
 131         if (type == NL80211_IFTYPE_MONITOR) {
 132                 err = ieee80211_set_mon_options(sdata, params);
 133                 if (err) {
 134                         ieee80211_if_remove(sdata);
 135                         return NULL;
 136                 }
 137         }
 138
 139         return wdev;
 140 }
 141
 142 static int ieee80211_del_iface(struct wiphy *wiphy, struct wireless_dev *wdev)
 143 {
 144         ieee80211_if_remove(IEEE80211_WDEV_TO_SUB_IF(wdev));
 145
 146         return 0;
 147 }
 148
 149 static int ieee80211_change_iface(struct wiphy *wiphy,
 150                                   struct net_device *dev,
 151                                   enum nl80211_iftype type,
 152                                   struct vif_params *params)
 153 {
 154         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 155         int ret;
 156
 157         ret = ieee80211_if_change_type(sdata, type);
 158         if (ret)
 159                 return ret;
 160
 161         if (type == NL80211_IFTYPE_AP_VLAN &&
 162             params && params->use_4addr == 0) {
 163                 RCU_INIT_POINTER(sdata->u.vlan.sta, NULL);
 164                 ieee80211_check_fast_rx_iface(sdata);
 165         } else if (type == NL80211_IFTYPE_STATION &&
 166                    params && params->use_4addr >= 0) {
 167                 sdata->u.mgd.use_4addr = params->use_4addr;
 168         }
 169
 170         if (sdata->vif.type == NL80211_IFTYPE_MONITOR) {
 171                 ret = ieee80211_set_mon_options(sdata, params);
 172                 if (ret)
 173                         return ret;
 174         }
 175
 176         return 0;
 177 }
 178
 179 static int ieee80211_start_p2p_device(struct wiphy *wiphy,
 180                                       struct wireless_dev *wdev)
 181 {
 182         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 183         int ret;
 184
 185         mutex_lock(&sdata->local->chanctx_mtx);
 186         ret = ieee80211_check_combinations(sdata, NULL, 0, 0);
 187         mutex_unlock(&sdata->local->chanctx_mtx);
 188         if (ret < 0)
 189                 return ret;
 190
 191         return ieee80211_do_open(wdev, true);
 192 }
 193
 194 static void ieee80211_stop_p2p_device(struct wiphy *wiphy,
 195                                       struct wireless_dev *wdev)
 196 {
 197         ieee80211_sdata_stop(IEEE80211_WDEV_TO_SUB_IF(wdev));
 198 }
 199
 200 static int ieee80211_start_nan(struct wiphy *wiphy,
 201                                struct wireless_dev *wdev,
 202                                struct cfg80211_nan_conf *conf)
 203 {
 204         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 205         int ret;
 206
 207         mutex_lock(&sdata->local->chanctx_mtx);
 208         ret = ieee80211_check_combinations(sdata, NULL, 0, 0);
 209         mutex_unlock(&sdata->local->chanctx_mtx);
 210         if (ret < 0)
 211                 return ret;
 212
 213         ret = ieee80211_do_open(wdev, true);
 214         if (ret)
 215                 return ret;
 216
 217         ret = drv_start_nan(sdata->local, sdata, conf);
 218         if (ret)
 219                 ieee80211_sdata_stop(sdata);
 220
 221         sdata->u.nan.conf = *conf;
 222
 223         return ret;
 224 }
 225
 226 static void ieee80211_stop_nan(struct wiphy *wiphy,
 227                                struct wireless_dev *wdev)
 228 {
 229         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 230
 231         drv_stop_nan(sdata->local, sdata);
 232         ieee80211_sdata_stop(sdata);
 233 }
 234
 235 static int ieee80211_nan_change_conf(struct wiphy *wiphy,
 236                                      struct wireless_dev *wdev,
 237                                      struct cfg80211_nan_conf *conf,
 238                                      u32 changes)
 239 {
 240         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 241         struct cfg80211_nan_conf new_conf;
 242         int ret = 0;
 243
 244         if (sdata->vif.type != NL80211_IFTYPE_NAN)
 245                 return -EOPNOTSUPP;
 246
 247         if (!ieee80211_sdata_running(sdata))
 248                 return -ENETDOWN;
 249
 250         new_conf = sdata->u.nan.conf;
 251
 252         if (changes & CFG80211_NAN_CONF_CHANGED_PREF)
 253                 new_conf.master_pref = conf->master_pref;
 254
 255         if (changes & CFG80211_NAN_CONF_CHANGED_BANDS)
 256                 new_conf.bands = conf->bands;
 257
 258         ret = drv_nan_change_conf(sdata->local, sdata, &new_conf, changes);
 259         if (!ret)
 260                 sdata->u.nan.conf = new_conf;
 261
 262         return ret;
 263 }
 264
 265 static int ieee80211_add_nan_func(struct wiphy *wiphy,
 266                                   struct wireless_dev *wdev,
 267                                   struct cfg80211_nan_func *nan_func)
 268 {
 269         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 270         int ret;
 271
 272         if (sdata->vif.type != NL80211_IFTYPE_NAN)
 273                 return -EOPNOTSUPP;
 274
 275         if (!ieee80211_sdata_running(sdata))
 276                 return -ENETDOWN;
 277
 278         spin_lock_bh(&sdata->u.nan.func_lock);
 279
 280         ret = idr_alloc(&sdata->u.nan.function_inst_ids,
 281                         nan_func, 1, sdata->local->hw.max_nan_de_entries + 1,
 282                         GFP_ATOMIC);
 283         spin_unlock_bh(&sdata->u.nan.func_lock);
 284
 285         if (ret < 0)
 286                 return ret;
 287
 288         nan_func->instance_id = ret;
 289
 290         WARN_ON(nan_func->instance_id == 0);
 291
 292         ret = drv_add_nan_func(sdata->local, sdata, nan_func);
 293         if (ret) {
 294                 spin_lock_bh(&sdata->u.nan.func_lock);
 295                 idr_remove(&sdata->u.nan.function_inst_ids,
 296                            nan_func->instance_id);
 297                 spin_unlock_bh(&sdata->u.nan.func_lock);
 298         }
 299
 300         return ret;
 301 }
 302
 303 static struct cfg80211_nan_func *
 304 ieee80211_find_nan_func_by_cookie(struct ieee80211_sub_if_data *sdata,
 305                                   u64 cookie)
 306 {
 307         struct cfg80211_nan_func *func;
 308         int id;
 309
 310         lockdep_assert_held(&sdata->u.nan.func_lock);
 311
 312         idr_for_each_entry(&sdata->u.nan.function_inst_ids, func, id) {
 313                 if (func->cookie == cookie)
 314                         return func;
 315         }
 316
 317         return NULL;
 318 }
 319
 320 static void ieee80211_del_nan_func(struct wiphy *wiphy,
 321                                   struct wireless_dev *wdev, u64 cookie)
 322 {
 323         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 324         struct cfg80211_nan_func *func;
 325         u8 instance_id = 0;
 326
 327         if (sdata->vif.type != NL80211_IFTYPE_NAN ||
 328             !ieee80211_sdata_running(sdata))
 329                 return;
 330
 331         spin_lock_bh(&sdata->u.nan.func_lock);
 332
 333         func = ieee80211_find_nan_func_by_cookie(sdata, cookie);
 334         if (func)
 335                 instance_id = func->instance_id;
 336
 337         spin_unlock_bh(&sdata->u.nan.func_lock);
 338
 339         if (instance_id)
 340                 drv_del_nan_func(sdata->local, sdata, instance_id);
 341 }
 342
 343 static int ieee80211_set_noack_map(struct wiphy *wiphy,
 344                                   struct net_device *dev,
 345                                   u16 noack_map)
 346 {
 347         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 348
 349         sdata->noack_map = noack_map;
 350
 351         ieee80211_check_fast_xmit_iface(sdata);
 352
 353         return 0;
 354 }
 355
 356 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
 357                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 358                              struct key_params *params)
 359 {
 360         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 361         struct ieee80211_local *local = sdata->local;
 362         struct sta_info *sta = NULL;
 363         const struct ieee80211_cipher_scheme *cs = NULL;
 364         struct ieee80211_key *key;
 365         int err;
 366
 367         if (!ieee80211_sdata_running(sdata))
 368                 return -ENETDOWN;
 369
 370         /* reject WEP and TKIP keys if WEP failed to initialize */
 371         switch (params->cipher) {
 372         case WLAN_CIPHER_SUITE_WEP40:
 373         case WLAN_CIPHER_SUITE_TKIP:
 374         case WLAN_CIPHER_SUITE_WEP104:
 375                 if (IS_ERR(local->wep_tx_tfm))
 376                         return -EINVAL;
 377                 break;
 378         case WLAN_CIPHER_SUITE_CCMP:
 379         case WLAN_CIPHER_SUITE_CCMP_256:
 380         case WLAN_CIPHER_SUITE_AES_CMAC:
 381         case WLAN_CIPHER_SUITE_BIP_CMAC_256:
 382         case WLAN_CIPHER_SUITE_BIP_GMAC_128:
 383         case WLAN_CIPHER_SUITE_BIP_GMAC_256:
 384         case WLAN_CIPHER_SUITE_GCMP:
 385         case WLAN_CIPHER_SUITE_GCMP_256:
 386                 break;
 387         default:
 388                 cs = ieee80211_cs_get(local, params->cipher, sdata->vif.type);
 389                 break;
 390         }
 391
 392         key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
 393                                   params->key, params->seq_len, params->seq,
 394                                   cs);
 395         if (IS_ERR(key))
 396                 return PTR_ERR(key);
 397
 398         if (pairwise)
 399                 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
 400
 401         mutex_lock(&local->sta_mtx);
 402
 403         if (mac_addr) {
 404                 sta = sta_info_get_bss(sdata, mac_addr);
 405                 /*
 406                  * The ASSOC test makes sure the driver is ready to
 407                  * receive the key. When wpa_supplicant has roamed
 408                  * using FT, it attempts to set the key before
 409                  * association has completed, this rejects that attempt
 410                  * so it will set the key again after association.
 411                  *
 412                  * TODO: accept the key if we have a station entry and
 413                  *       add it to the device after the station.
 414                  */
 415                 if (!sta || !test_sta_flag(sta, WLAN_STA_ASSOC)) {
 416                         ieee80211_key_free_unused(key);
 417                         err = -ENOENT;
 418                         goto out_unlock;
 419                 }
 420         }
 421
 422         switch (sdata->vif.type) {
 423         case NL80211_IFTYPE_STATION:
 424                 if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED)
 425                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 426                 break;
 427         case NL80211_IFTYPE_AP:
 428         case NL80211_IFTYPE_AP_VLAN:
 429                 /* Keys without a station are used for TX only */
 430                 if (key->sta && test_sta_flag(key->sta, WLAN_STA_MFP))
 431                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 432                 break;
 433         case NL80211_IFTYPE_ADHOC:
 434                 /* no MFP (yet) */
 435                 break;
 436         case NL80211_IFTYPE_MESH_POINT:
 437 #ifdef CONFIG_MAC80211_MESH
 438                 if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE)
 439                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 440                 break;
 441 #endif
 442         case NL80211_IFTYPE_WDS:
 443         case NL80211_IFTYPE_MONITOR:
 444         case NL80211_IFTYPE_P2P_DEVICE:
 445         case NL80211_IFTYPE_NAN:
 446         case NL80211_IFTYPE_UNSPECIFIED:
 447         case NUM_NL80211_IFTYPES:
 448         case NL80211_IFTYPE_P2P_CLIENT:
 449         case NL80211_IFTYPE_P2P_GO:
 450         case NL80211_IFTYPE_OCB:
 451                 /* shouldn't happen */
 452                 WARN_ON_ONCE(1);
 453                 break;
 454         }
 455
 456         if (sta)
 457                 sta->cipher_scheme = cs;
 458
 459         err = ieee80211_key_link(key, sdata, sta);
 460
 461  out_unlock:
 462         mutex_unlock(&local->sta_mtx);
 463
 464         return err;
 465 }
 466
 467 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
 468                              u8 key_idx, bool pairwise, const u8 *mac_addr)
 469 {
 470         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 471         struct ieee80211_local *local = sdata->local;
 472         struct sta_info *sta;
 473         struct ieee80211_key *key = NULL;
 474         int ret;
 475
 476         mutex_lock(&local->sta_mtx);
 477         mutex_lock(&local->key_mtx);
 478
 479         if (mac_addr) {
 480                 ret = -ENOENT;
 481
 482                 sta = sta_info_get_bss(sdata, mac_addr);
 483                 if (!sta)
 484                         goto out_unlock;
 485
 486                 if (pairwise)
 487                         key = key_mtx_dereference(local, sta->ptk[key_idx]);
 488                 else
 489                         key = key_mtx_dereference(local, sta->gtk[key_idx]);
 490         } else
 491                 key = key_mtx_dereference(local, sdata->keys[key_idx]);
 492
 493         if (!key) {
 494                 ret = -ENOENT;
 495                 goto out_unlock;
 496         }
 497
 498         ieee80211_key_free(key, true);
 499
 500         ret = 0;
 501  out_unlock:
 502         mutex_unlock(&local->key_mtx);
 503         mutex_unlock(&local->sta_mtx);
 504
 505         return ret;
 506 }
 507
 508 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
 509                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 510                              void *cookie,
 511                              void (*callback)(void *cookie,
 512                                               struct key_params *params))
 513 {
 514         struct ieee80211_sub_if_data *sdata;
 515         struct sta_info *sta = NULL;
 516         u8 seq[6] = {0};
 517         struct key_params params;
 518         struct ieee80211_key *key = NULL;
 519         u64 pn64;
 520         u32 iv32;
 521         u16 iv16;
 522         int err = -ENOENT;
 523         struct ieee80211_key_seq kseq = {};
 524
 525         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 526
 527         rcu_read_lock();
 528
 529         if (mac_addr) {
 530                 sta = sta_info_get_bss(sdata, mac_addr);
 531                 if (!sta)
 532                         goto out;
 533
 534                 if (pairwise && key_idx < NUM_DEFAULT_KEYS)
 535                         key = rcu_dereference(sta->ptk[key_idx]);
 536                 else if (!pairwise &&
 537                          key_idx < NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS)
 538                         key = rcu_dereference(sta->gtk[key_idx]);
 539         } else
 540                 key = rcu_dereference(sdata->keys[key_idx]);
 541
 542         if (!key)
 543                 goto out;
 544
 545         memset(&params, 0, sizeof(params));
 546
 547         params.cipher = key->conf.cipher;
 548
 549         switch (key->conf.cipher) {
 550         case WLAN_CIPHER_SUITE_TKIP:
 551                 pn64 = atomic64_read(&key->conf.tx_pn);
 552                 iv32 = TKIP_PN_TO_IV32(pn64);
 553                 iv16 = TKIP_PN_TO_IV16(pn64);
 554
 555                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
 556                     !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
 557                         drv_get_key_seq(sdata->local, key, &kseq);
 558                         iv32 = kseq.tkip.iv32;
 559                         iv16 = kseq.tkip.iv16;
 560                 }
 561
 562                 seq[0] = iv16 & 0xff;
 563                 seq[1] = (iv16 >> 8) & 0xff;
 564                 seq[2] = iv32 & 0xff;
 565                 seq[3] = (iv32 >> 8) & 0xff;
 566                 seq[4] = (iv32 >> 16) & 0xff;
 567                 seq[5] = (iv32 >> 24) & 0xff;
 568                 params.seq = seq;
 569                 params.seq_len = 6;
 570                 break;
 571         case WLAN_CIPHER_SUITE_CCMP:
 572         case WLAN_CIPHER_SUITE_CCMP_256:
 573         case WLAN_CIPHER_SUITE_AES_CMAC:
 574         case WLAN_CIPHER_SUITE_BIP_CMAC_256:
 575                 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
 576                              offsetof(typeof(kseq), aes_cmac));
 577                 /* fall through */
 578         case WLAN_CIPHER_SUITE_BIP_GMAC_128:
 579         case WLAN_CIPHER_SUITE_BIP_GMAC_256:
 580                 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
 581                              offsetof(typeof(kseq), aes_gmac));
 582                 /* fall through */
 583         case WLAN_CIPHER_SUITE_GCMP:
 584         case WLAN_CIPHER_SUITE_GCMP_256:
 585                 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
 586                              offsetof(typeof(kseq), gcmp));
 587
 588                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
 589                     !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
 590                         drv_get_key_seq(sdata->local, key, &kseq);
 591                         memcpy(seq, kseq.ccmp.pn, 6);
 592                 } else {
 593                         pn64 = atomic64_read(&key->conf.tx_pn);
 594                         seq[0] = pn64;
 595                         seq[1] = pn64 >> 8;
 596                         seq[2] = pn64 >> 16;
 597                         seq[3] = pn64 >> 24;
 598                         seq[4] = pn64 >> 32;
 599                         seq[5] = pn64 >> 40;
 600                 }
 601                 params.seq = seq;
 602                 params.seq_len = 6;
 603                 break;
 604         default:
 605                 if (!(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE))
 606                         break;
 607                 if (WARN_ON(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV))
 608                         break;
 609                 drv_get_key_seq(sdata->local, key, &kseq);
 610                 params.seq = kseq.hw.seq;
 611                 params.seq_len = kseq.hw.seq_len;
 612                 break;
 613         }
 614
 615         params.key = key->conf.key;
 616         params.key_len = key->conf.keylen;
 617
 618         callback(cookie, &params);
 619         err = 0;
 620
 621  out:
 622         rcu_read_unlock();
 623         return err;
 624 }
 625
 626 static int ieee80211_config_default_key(struct wiphy *wiphy,
 627                                         struct net_device *dev,
 628                                         u8 key_idx, bool uni,
 629                                         bool multi)
 630 {
 631         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 632
 633         ieee80211_set_default_key(sdata, key_idx, uni, multi);
 634
 635         return 0;
 636 }
 637
 638 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
 639                                              struct net_device *dev,
 640                                              u8 key_idx)
 641 {
 642         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 643
 644         ieee80211_set_default_mgmt_key(sdata, key_idx);
 645
 646         return 0;
 647 }
 648
 649 void sta_set_rate_info_tx(struct sta_info *sta,
 650                           const struct ieee80211_tx_rate *rate,
 651                           struct rate_info *rinfo)
 652 {
 653         rinfo->flags = 0;
 654         if (rate->flags & IEEE80211_TX_RC_MCS) {
 655                 rinfo->flags |= RATE_INFO_FLAGS_MCS;
 656                 rinfo->mcs = rate->idx;
 657         } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) {
 658                 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
 659                 rinfo->mcs = ieee80211_rate_get_vht_mcs(rate);
 660                 rinfo->nss = ieee80211_rate_get_vht_nss(rate);
 661         } else {
 662                 struct ieee80211_supported_band *sband;
 663                 int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
 664                 u16 brate;
 665
 666                 sband = ieee80211_get_sband(sta->sdata);
 667                 if (sband) {
 668                         brate = sband->bitrates[rate->idx].bitrate;
 669                         rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
 670                 }
 671         }
 672         if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 673                 rinfo->bw = RATE_INFO_BW_40;
 674         else if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
 675                 rinfo->bw = RATE_INFO_BW_80;
 676         else if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
 677                 rinfo->bw = RATE_INFO_BW_160;
 678         else
 679                 rinfo->bw = RATE_INFO_BW_20;
 680         if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
 681                 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
 682 }
 683
 684 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
 685                                   int idx, u8 *mac, struct station_info *sinfo)
 686 {
 687         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 688         struct ieee80211_local *local = sdata->local;
 689         struct sta_info *sta;
 690         int ret = -ENOENT;
 691
 692         mutex_lock(&local->sta_mtx);
 693
 694         sta = sta_info_get_by_idx(sdata, idx);
 695         if (sta) {
 696                 ret = 0;
 697                 memcpy(mac, sta->sta.addr, ETH_ALEN);
 698                 sta_set_sinfo(sta, sinfo, true);
 699         }
 700
 701         mutex_unlock(&local->sta_mtx);
 702
 703         return ret;
 704 }
 705
 706 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
 707                                  int idx, struct survey_info *survey)
 708 {
 709         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 710
 711         return drv_get_survey(local, idx, survey);
 712 }
 713
 714 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 715                                  const u8 *mac, struct station_info *sinfo)
 716 {
 717         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 718         struct ieee80211_local *local = sdata->local;
 719         struct sta_info *sta;
 720         int ret = -ENOENT;
 721
 722         mutex_lock(&local->sta_mtx);
 723
 724         sta = sta_info_get_bss(sdata, mac);
 725         if (sta) {
 726                 ret = 0;
 727                 sta_set_sinfo(sta, sinfo, true);
 728         }
 729
 730         mutex_unlock(&local->sta_mtx);
 731
 732         return ret;
 733 }
 734
 735 static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
 736                                          struct cfg80211_chan_def *chandef)
 737 {
 738         struct ieee80211_local *local = wiphy_priv(wiphy);
 739         struct ieee80211_sub_if_data *sdata;
 740         int ret = 0;
 741
 742         if (cfg80211_chandef_identical(&local->monitor_chandef, chandef))
 743                 return 0;
 744
 745         mutex_lock(&local->mtx);
 746         if (local->use_chanctx) {
 747                 sdata = rtnl_dereference(local->monitor_sdata);
 748                 if (sdata) {
 749                         ieee80211_vif_release_channel(sdata);
 750                         ret = ieee80211_vif_use_channel(sdata, chandef,
 751                                         IEEE80211_CHANCTX_EXCLUSIVE);
 752                 }
 753         } else if (local->open_count == local->monitors) {
 754                 local->_oper_chandef = *chandef;
 755                 ieee80211_hw_config(local, 0);
 756         }
 757
 758         if (ret == 0)
 759                 local->monitor_chandef = *chandef;
 760         mutex_unlock(&local->mtx);
 761
 762         return ret;
 763 }
 764
 765 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
 766                                     const u8 *resp, size_t resp_len,
 767                                     const struct ieee80211_csa_settings *csa)
 768 {
 769         struct probe_resp *new, *old;
 770
 771         if (!resp || !resp_len)
 772                 return 1;
 773
 774         old = sdata_dereference(sdata->u.ap.probe_resp, sdata);
 775
 776         new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL);
 777         if (!new)
 778                 return -ENOMEM;
 779
 780         new->len = resp_len;
 781         memcpy(new->data, resp, resp_len);
 782
 783         if (csa)
 784                 memcpy(new->csa_counter_offsets, csa->counter_offsets_presp,
 785                        csa->n_counter_offsets_presp *
 786                        sizeof(new->csa_counter_offsets[0]));
 787
 788         rcu_assign_pointer(sdata->u.ap.probe_resp, new);
 789         if (old)
 790                 kfree_rcu(old, rcu_head);
 791
 792         return 0;
 793 }
 794
 795 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
 796                                    struct cfg80211_beacon_data *params,
 797                                    const struct ieee80211_csa_settings *csa)
 798 {
 799         struct beacon_data *new, *old;
 800         int new_head_len, new_tail_len;
 801         int size, err;
 802         u32 changed = BSS_CHANGED_BEACON;
 803
 804         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 805
 806
 807         /* Need to have a beacon head if we don't have one yet */
 808         if (!params->head && !old)
 809                 return -EINVAL;
 810
 811         /* new or old head? */
 812         if (params->head)
 813                 new_head_len = params->head_len;
 814         else
 815                 new_head_len = old->head_len;
 816
 817         /* new or old tail? */
 818         if (params->tail || !old)
 819                 /* params->tail_len will be zero for !params->tail */
 820                 new_tail_len = params->tail_len;
 821         else
 822                 new_tail_len = old->tail_len;
 823
 824         size = sizeof(*new) + new_head_len + new_tail_len;
 825
 826         new = kzalloc(size, GFP_KERNEL);
 827         if (!new)
 828                 return -ENOMEM;
 829
 830         /* start filling the new info now */
 831
 832         /*
 833          * pointers go into the block we allocated,
 834          * memory is | beacon_data | head | tail |
 835          */
 836         new->head = ((u8 *) new) + sizeof(*new);
 837         new->tail = new->head + new_head_len;
 838         new->head_len = new_head_len;
 839         new->tail_len = new_tail_len;
 840
 841         if (csa) {
 842                 new->csa_current_counter = csa->count;
 843                 memcpy(new->csa_counter_offsets, csa->counter_offsets_beacon,
 844                        csa->n_counter_offsets_beacon *
 845                        sizeof(new->csa_counter_offsets[0]));
 846         }
 847
 848         /* copy in head */
 849         if (params->head)
 850                 memcpy(new->head, params->head, new_head_len);
 851         else
 852                 memcpy(new->head, old->head, new_head_len);
 853
 854         /* copy in optional tail */
 855         if (params->tail)
 856                 memcpy(new->tail, params->tail, new_tail_len);
 857         else
 858                 if (old)
 859                         memcpy(new->tail, old->tail, new_tail_len);
 860
 861         err = ieee80211_set_probe_resp(sdata, params->probe_resp,
 862                                        params->probe_resp_len, csa);
 863         if (err < 0)
 864                 return err;
 865         if (err == 0)
 866                 changed |= BSS_CHANGED_AP_PROBE_RESP;
 867
 868         rcu_assign_pointer(sdata->u.ap.beacon, new);
 869
 870         if (old)
 871                 kfree_rcu(old, rcu_head);
 872
 873         return changed;
 874 }
 875
 876 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
 877                               struct cfg80211_ap_settings *params)
 878 {
 879         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 880         struct ieee80211_local *local = sdata->local;
 881         struct beacon_data *old;
 882         struct ieee80211_sub_if_data *vlan;
 883         u32 changed = BSS_CHANGED_BEACON_INT |
 884                       BSS_CHANGED_BEACON_ENABLED |
 885                       BSS_CHANGED_BEACON |
 886                       BSS_CHANGED_SSID |
 887                       BSS_CHANGED_P2P_PS |
 888                       BSS_CHANGED_TXPOWER;
 889         int err;
 890
 891         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 892         if (old)
 893                 return -EALREADY;
 894
 895         switch (params->smps_mode) {
 896         case NL80211_SMPS_OFF:
 897                 sdata->smps_mode = IEEE80211_SMPS_OFF;
 898                 break;
 899         case NL80211_SMPS_STATIC:
 900                 sdata->smps_mode = IEEE80211_SMPS_STATIC;
 901                 break;
 902         case NL80211_SMPS_DYNAMIC:
 903                 sdata->smps_mode = IEEE80211_SMPS_DYNAMIC;
 904                 break;
 905         default:
 906                 return -EINVAL;
 907         }
 908         sdata->u.ap.req_smps = sdata->smps_mode;
 909
 910         sdata->needed_rx_chains = sdata->local->rx_chains;
 911
 912         sdata->vif.bss_conf.beacon_int = params->beacon_interval;
 913
 914         mutex_lock(&local->mtx);
 915         err = ieee80211_vif_use_channel(sdata, &params->chandef,
 916                                         IEEE80211_CHANCTX_SHARED);
 917         if (!err)
 918                 ieee80211_vif_copy_chanctx_to_vlans(sdata, false);
 919         mutex_unlock(&local->mtx);
 920         if (err)
 921                 return err;
 922
 923         /*
 924          * Apply control port protocol, this allows us to
 925          * not encrypt dynamic WEP control frames.
 926          */
 927         sdata->control_port_protocol = params->crypto.control_port_ethertype;
 928         sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
 929         sdata->control_port_over_nl80211 =
 930                                 params->crypto.control_port_over_nl80211;
 931         sdata->encrypt_headroom = ieee80211_cs_headroom(sdata->local,
 932                                                         &params->crypto,
 933                                                         sdata->vif.type);
 934
 935         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
 936                 vlan->control_port_protocol =
 937                         params->crypto.control_port_ethertype;
 938                 vlan->control_port_no_encrypt =
 939                         params->crypto.control_port_no_encrypt;
 940                 vlan->control_port_over_nl80211 =
 941                         params->crypto.control_port_over_nl80211;
 942                 vlan->encrypt_headroom =
 943                         ieee80211_cs_headroom(sdata->local,
 944                                               &params->crypto,
 945                                               vlan->vif.type);
 946         }
 947
 948         sdata->vif.bss_conf.dtim_period = params->dtim_period;
 949         sdata->vif.bss_conf.enable_beacon = true;
 950         sdata->vif.bss_conf.allow_p2p_go_ps = sdata->vif.p2p;
 951
 952         sdata->vif.bss_conf.ssid_len = params->ssid_len;
 953         if (params->ssid_len)
 954                 memcpy(sdata->vif.bss_conf.ssid, params->ssid,
 955                        params->ssid_len);
 956         sdata->vif.bss_conf.hidden_ssid =
 957                 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
 958
 959         memset(&sdata->vif.bss_conf.p2p_noa_attr, 0,
 960                sizeof(sdata->vif.bss_conf.p2p_noa_attr));
 961         sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow =
 962                 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
 963         if (params->p2p_opp_ps)
 964                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
 965                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
 966
 967         err = ieee80211_assign_beacon(sdata, &params->beacon, NULL);
 968         if (err < 0) {
 969                 ieee80211_vif_release_channel(sdata);
 970                 return err;
 971         }
 972         changed |= err;
 973
 974         err = drv_start_ap(sdata->local, sdata);
 975         if (err) {
 976                 old = sdata_dereference(sdata->u.ap.beacon, sdata);
 977
 978                 if (old)
 979                         kfree_rcu(old, rcu_head);
 980                 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
 981                 ieee80211_vif_release_channel(sdata);
 982                 return err;
 983         }
 984
 985         ieee80211_recalc_dtim(local, sdata);
 986         ieee80211_bss_info_change_notify(sdata, changed);
 987
 988         netif_carrier_on(dev);
 989         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
 990                 netif_carrier_on(vlan->dev);
 991
 992         return 0;
 993 }
 994
 995 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
 996                                    struct cfg80211_beacon_data *params)
 997 {
 998         struct ieee80211_sub_if_data *sdata;
 999         struct beacon_data *old;
1000         int err;
1001
1002         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1003         sdata_assert_lock(sdata);
1004
1005         /* don't allow changing the beacon while CSA is in place - offset
1006          * of channel switch counter may change
1007          */
1008         if (sdata->vif.csa_active)
1009                 return -EBUSY;
1010
1011         old = sdata_dereference(sdata->u.ap.beacon, sdata);
1012         if (!old)
1013                 return -ENOENT;
1014
1015         err = ieee80211_assign_beacon(sdata, params, NULL);
1016         if (err < 0)
1017                 return err;
1018         ieee80211_bss_info_change_notify(sdata, err);
1019         return 0;
1020 }
1021
1022 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
1023 {
1024         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1025         struct ieee80211_sub_if_data *vlan;
1026         struct ieee80211_local *local = sdata->local;
1027         struct beacon_data *old_beacon;
1028         struct probe_resp *old_probe_resp;
1029         struct cfg80211_chan_def chandef;
1030
1031         sdata_assert_lock(sdata);
1032
1033         old_beacon = sdata_dereference(sdata->u.ap.beacon, sdata);
1034         if (!old_beacon)
1035                 return -ENOENT;
1036         old_probe_resp = sdata_dereference(sdata->u.ap.probe_resp, sdata);
1037
1038         /* abort any running channel switch */
1039         mutex_lock(&local->mtx);
1040         sdata->vif.csa_active = false;
1041         if (sdata->csa_block_tx) {
1042                 ieee80211_wake_vif_queues(local, sdata,
1043                                           IEEE80211_QUEUE_STOP_REASON_CSA);
1044                 sdata->csa_block_tx = false;
1045         }
1046
1047         mutex_unlock(&local->mtx);
1048
1049         kfree(sdata->u.ap.next_beacon);
1050         sdata->u.ap.next_beacon = NULL;
1051
1052         /* turn off carrier for this interface and dependent VLANs */
1053         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1054                 netif_carrier_off(vlan->dev);
1055         netif_carrier_off(dev);
1056
1057         /* remove beacon and probe response */
1058         RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
1059         RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL);
1060         kfree_rcu(old_beacon, rcu_head);
1061         if (old_probe_resp)
1062                 kfree_rcu(old_probe_resp, rcu_head);
1063         sdata->u.ap.driver_smps_mode = IEEE80211_SMPS_OFF;
1064
1065         __sta_info_flush(sdata, true);
1066         ieee80211_free_keys(sdata, true);
1067
1068         sdata->vif.bss_conf.enable_beacon = false;
1069         sdata->vif.bss_conf.ssid_len = 0;
1070         clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state);
1071         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
1072
1073         if (sdata->wdev.cac_started) {
1074                 chandef = sdata->vif.bss_conf.chandef;
1075                 cancel_delayed_work_sync(&sdata->dfs_cac_timer_work);
1076                 cfg80211_cac_event(sdata->dev, &chandef,
1077                                    NL80211_RADAR_CAC_ABORTED,
1078                                    GFP_KERNEL);
1079         }
1080
1081         drv_stop_ap(sdata->local, sdata);
1082
1083         /* free all potentially still buffered bcast frames */
1084         local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf);
1085         ieee80211_purge_tx_queue(&local->hw, &sdata->u.ap.ps.bc_buf);
1086
1087         mutex_lock(&local->mtx);
1088         ieee80211_vif_copy_chanctx_to_vlans(sdata, true);
1089         ieee80211_vif_release_channel(sdata);
1090         mutex_unlock(&local->mtx);
1091
1092         return 0;
1093 }
1094
1095 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
1096 struct iapp_layer2_update {
1097         u8 da[ETH_ALEN];        /* broadcast */
1098         u8 sa[ETH_ALEN];        /* STA addr */
1099         __be16 len;             /* 6 */
1100         u8 dsap;                /* 0 */
1101         u8 ssap;                /* 0 */
1102         u8 control;
1103         u8 xid_info[3];
1104 } __packed;
1105
1106 static void ieee80211_send_layer2_update(struct sta_info *sta)
1107 {
1108         struct iapp_layer2_update *msg;
1109         struct sk_buff *skb;
1110
1111         /* Send Level 2 Update Frame to update forwarding tables in layer 2
1112          * bridge devices */
1113
1114         skb = dev_alloc_skb(sizeof(*msg));
1115         if (!skb)
1116                 return;
1117         msg = skb_put(skb, sizeof(*msg));
1118
1119         /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
1120          * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
1121
1122         eth_broadcast_addr(msg->da);
1123         memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
1124         msg->len = htons(6);
1125         msg->dsap = 0;
1126         msg->ssap = 0x01;       /* NULL LSAP, CR Bit: Response */
1127         msg->control = 0xaf;    /* XID response lsb.1111F101.
1128                                  * F=0 (no poll command; unsolicited frame) */
1129         msg->xid_info[0] = 0x81;        /* XID format identifier */
1130         msg->xid_info[1] = 1;   /* LLC types/classes: Type 1 LLC */
1131         msg->xid_info[2] = 0;   /* XID sender's receive window size (RW) */
1132
1133         skb->dev = sta->sdata->dev;
1134         skb->protocol = eth_type_trans(skb, sta->sdata->dev);
1135         memset(skb->cb, 0, sizeof(skb->cb));
1136         netif_rx_ni(skb);
1137 }
1138
1139 static int sta_apply_auth_flags(struct ieee80211_local *local,
1140                                 struct sta_info *sta,
1141                                 u32 mask, u32 set)
1142 {
1143         int ret;
1144
1145         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1146             set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1147             !test_sta_flag(sta, WLAN_STA_AUTH)) {
1148                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1149                 if (ret)
1150                         return ret;
1151         }
1152
1153         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1154             set & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1155             !test_sta_flag(sta, WLAN_STA_ASSOC)) {
1156                 /*
1157                  * When peer becomes associated, init rate control as
1158                  * well. Some drivers require rate control initialized
1159                  * before drv_sta_state() is called.
1160                  */
1161                 if (!test_sta_flag(sta, WLAN_STA_RATE_CONTROL))
1162                         rate_control_rate_init(sta);
1163
1164                 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1165                 if (ret)
1166                         return ret;
1167         }
1168
1169         if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1170                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
1171                         ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
1172                 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1173                         ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1174                 else
1175                         ret = 0;
1176                 if (ret)
1177                         return ret;
1178         }
1179
1180         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1181             !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
1182             test_sta_flag(sta, WLAN_STA_ASSOC)) {
1183                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1184                 if (ret)
1185                         return ret;
1186         }
1187
1188         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1189             !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
1190             test_sta_flag(sta, WLAN_STA_AUTH)) {
1191                 ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
1192                 if (ret)
1193                         return ret;
1194         }
1195
1196         return 0;
1197 }
1198
1199 static void sta_apply_mesh_params(struct ieee80211_local *local,
1200                                   struct sta_info *sta,
1201                                   struct station_parameters *params)
1202 {
1203 #ifdef CONFIG_MAC80211_MESH
1204         struct ieee80211_sub_if_data *sdata = sta->sdata;
1205         u32 changed = 0;
1206
1207         if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) {
1208                 switch (params->plink_state) {
1209                 case NL80211_PLINK_ESTAB:
1210                         if (sta->mesh->plink_state != NL80211_PLINK_ESTAB)
1211                                 changed = mesh_plink_inc_estab_count(sdata);
1212                         sta->mesh->plink_state = params->plink_state;
1213                         sta->mesh->aid = params->peer_aid;
1214
1215                         ieee80211_mps_sta_status_update(sta);
1216                         changed |= ieee80211_mps_set_sta_local_pm(sta,
1217                                       sdata->u.mesh.mshcfg.power_mode);
1218                         break;
1219                 case NL80211_PLINK_LISTEN:
1220                 case NL80211_PLINK_BLOCKED:
1221                 case NL80211_PLINK_OPN_SNT:
1222                 case NL80211_PLINK_OPN_RCVD:
1223                 case NL80211_PLINK_CNF_RCVD:
1224                 case NL80211_PLINK_HOLDING:
1225                         if (sta->mesh->plink_state == NL80211_PLINK_ESTAB)
1226                                 changed = mesh_plink_dec_estab_count(sdata);
1227                         sta->mesh->plink_state = params->plink_state;
1228
1229                         ieee80211_mps_sta_status_update(sta);
1230                         changed |= ieee80211_mps_set_sta_local_pm(sta,
1231                                         NL80211_MESH_POWER_UNKNOWN);
1232                         break;
1233                 default:
1234                         /*  nothing  */
1235                         break;
1236                 }
1237         }
1238
1239         switch (params->plink_action) {
1240         case NL80211_PLINK_ACTION_NO_ACTION:
1241                 /* nothing */
1242                 break;
1243         case NL80211_PLINK_ACTION_OPEN:
1244                 changed |= mesh_plink_open(sta);
1245                 break;
1246         case NL80211_PLINK_ACTION_BLOCK:
1247                 changed |= mesh_plink_block(sta);
1248                 break;
1249         }
1250
1251         if (params->local_pm)
1252                 changed |= ieee80211_mps_set_sta_local_pm(sta,
1253                                                           params->local_pm);
1254
1255         ieee80211_mbss_info_change_notify(sdata, changed);
1256 #endif
1257 }
1258
1259 static int sta_apply_parameters(struct ieee80211_local *local,
1260                                 struct sta_info *sta,
1261                                 struct station_parameters *params)
1262 {
1263         int ret = 0;
1264         struct ieee80211_supported_band *sband;
1265         struct ieee80211_sub_if_data *sdata = sta->sdata;
1266         u32 mask, set;
1267
1268         sband = ieee80211_get_sband(sdata);
1269         if (!sband)
1270                 return -EINVAL;
1271
1272         mask = params->sta_flags_mask;
1273         set = params->sta_flags_set;
1274
1275         if (ieee80211_vif_is_mesh(&sdata->vif)) {
1276                 /*
1277                  * In mesh mode, ASSOCIATED isn't part of the nl80211
1278                  * API but must follow AUTHENTICATED for driver state.
1279                  */
1280                 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1281                         mask |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1282                 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1283                         set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1284         } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1285                 /*
1286                  * TDLS -- everything follows authorized, but
1287                  * only becoming authorized is possible, not
1288                  * going back
1289                  */
1290                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1291                         set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1292                                BIT(NL80211_STA_FLAG_ASSOCIATED);
1293                         mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1294                                 BIT(NL80211_STA_FLAG_ASSOCIATED);
1295                 }
1296         }
1297
1298         if (mask & BIT(NL80211_STA_FLAG_WME) &&
1299             local->hw.queues >= IEEE80211_NUM_ACS)
1300                 sta->sta.wme = set & BIT(NL80211_STA_FLAG_WME);
1301
1302         /* auth flags will be set later for TDLS,
1303          * and for unassociated stations that move to assocaited */
1304         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1305             !((mask & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
1306               (set & BIT(NL80211_STA_FLAG_ASSOCIATED)))) {
1307                 ret = sta_apply_auth_flags(local, sta, mask, set);
1308                 if (ret)
1309                         return ret;
1310         }
1311
1312         if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
1313                 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
1314                         set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1315                 else
1316                         clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1317         }
1318
1319         if (mask & BIT(NL80211_STA_FLAG_MFP)) {
1320                 sta->sta.mfp = !!(set & BIT(NL80211_STA_FLAG_MFP));
1321                 if (set & BIT(NL80211_STA_FLAG_MFP))
1322                         set_sta_flag(sta, WLAN_STA_MFP);
1323                 else
1324                         clear_sta_flag(sta, WLAN_STA_MFP);
1325         }
1326
1327         if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
1328                 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1329                         set_sta_flag(sta, WLAN_STA_TDLS_PEER);
1330                 else
1331                         clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1332         }
1333
1334         /* mark TDLS channel switch support, if the AP allows it */
1335         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1336             !sdata->u.mgd.tdls_chan_switch_prohibited &&
1337             params->ext_capab_len >= 4 &&
1338             params->ext_capab[3] & WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH)
1339                 set_sta_flag(sta, WLAN_STA_TDLS_CHAN_SWITCH);
1340
1341         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1342             !sdata->u.mgd.tdls_wider_bw_prohibited &&
1343             ieee80211_hw_check(&local->hw, TDLS_WIDER_BW) &&
1344             params->ext_capab_len >= 8 &&
1345             params->ext_capab[7] & WLAN_EXT_CAPA8_TDLS_WIDE_BW_ENABLED)
1346                 set_sta_flag(sta, WLAN_STA_TDLS_WIDER_BW);
1347
1348         if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
1349                 sta->sta.uapsd_queues = params->uapsd_queues;
1350                 sta->sta.max_sp = params->max_sp;
1351         }
1352
1353         /* The sender might not have sent the last bit, consider it to be 0 */
1354         if (params->ext_capab_len >= 8) {
1355                 u8 val = (params->ext_capab[7] &
1356                           WLAN_EXT_CAPA8_MAX_MSDU_IN_AMSDU_LSB) >> 7;
1357
1358                 /* we did get all the bits, take the MSB as well */
1359                 if (params->ext_capab_len >= 9) {
1360                         u8 val_msb = params->ext_capab[8] &
1361                                 WLAN_EXT_CAPA9_MAX_MSDU_IN_AMSDU_MSB;
1362                         val_msb <<= 1;
1363                         val |= val_msb;
1364                 }
1365
1366                 switch (val) {
1367                 case 1:
1368                         sta->sta.max_amsdu_subframes = 32;
1369                         break;
1370                 case 2:
1371                         sta->sta.max_amsdu_subframes = 16;
1372                         break;
1373                 case 3:
1374                         sta->sta.max_amsdu_subframes = 8;
1375                         break;
1376                 default:
1377                         sta->sta.max_amsdu_subframes = 0;
1378                 }
1379         }
1380
1381         /*
1382          * cfg80211 validates this (1-2007) and allows setting the AID
1383          * only when creating a new station entry
1384          */
1385         if (params->aid)
1386                 sta->sta.aid = params->aid;
1387
1388         /*
1389          * Some of the following updates would be racy if called on an
1390          * existing station, via ieee80211_change_station(). However,
1391          * all such changes are rejected by cfg80211 except for updates
1392          * changing the supported rates on an existing but not yet used
1393          * TDLS peer.
1394          */
1395
1396         if (params->listen_interval >= 0)
1397                 sta->listen_interval = params->listen_interval;
1398
1399         if (params->supported_rates) {
1400                 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1401                                          sband, params->supported_rates,
1402                                          params->supported_rates_len,
1403                                          &sta->sta.supp_rates[sband->band]);
1404         }
1405
1406         if (params->ht_capa)
1407                 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1408                                                   params->ht_capa, sta);
1409
1410         /* VHT can override some HT caps such as the A-MSDU max length */
1411         if (params->vht_capa)
1412                 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
1413                                                     params->vht_capa, sta);
1414
1415         if (params->opmode_notif_used) {
1416                 /* returned value is only needed for rc update, but the
1417                  * rc isn't initialized here yet, so ignore it
1418                  */
1419                 __ieee80211_vht_handle_opmode(sdata, sta, params->opmode_notif,
1420                                               sband->band);
1421         }
1422
1423         if (params->support_p2p_ps >= 0)
1424                 sta->sta.support_p2p_ps = params->support_p2p_ps;
1425
1426         if (ieee80211_vif_is_mesh(&sdata->vif))
1427                 sta_apply_mesh_params(local, sta, params);
1428
1429         /* set the STA state after all sta info from usermode has been set */
1430         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) ||
1431             set & BIT(NL80211_STA_FLAG_ASSOCIATED)) {
1432                 ret = sta_apply_auth_flags(local, sta, mask, set);
1433                 if (ret)
1434                         return ret;
1435         }
1436
1437         return 0;
1438 }
1439
1440 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1441                                  const u8 *mac,
1442                                  struct station_parameters *params)
1443 {
1444         struct ieee80211_local *local = wiphy_priv(wiphy);
1445         struct sta_info *sta;
1446         struct ieee80211_sub_if_data *sdata;
1447         int err;
1448         int layer2_update;
1449
1450         if (params->vlan) {
1451                 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1452
1453                 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1454                     sdata->vif.type != NL80211_IFTYPE_AP)
1455                         return -EINVAL;
1456         } else
1457                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1458
1459         if (ether_addr_equal(mac, sdata->vif.addr))
1460                 return -EINVAL;
1461
1462         if (is_multicast_ether_addr(mac))
1463                 return -EINVAL;
1464
1465         sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
1466         if (!sta)
1467                 return -ENOMEM;
1468
1469         if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1470                 sta->sta.tdls = true;
1471
1472         err = sta_apply_parameters(local, sta, params);
1473         if (err) {
1474                 sta_info_free(local, sta);
1475                 return err;
1476         }
1477
1478         /*
1479          * for TDLS and for unassociated station, rate control should be
1480          * initialized only when rates are known and station is marked
1481          * authorized/associated
1482          */
1483         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1484             test_sta_flag(sta, WLAN_STA_ASSOC))
1485                 rate_control_rate_init(sta);
1486
1487         layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
1488                 sdata->vif.type == NL80211_IFTYPE_AP;
1489
1490         err = sta_info_insert_rcu(sta);
1491         if (err) {
1492                 rcu_read_unlock();
1493                 return err;
1494         }
1495
1496         if (layer2_update)
1497                 ieee80211_send_layer2_update(sta);
1498
1499         rcu_read_unlock();
1500
1501         return 0;
1502 }
1503
1504 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1505                                  struct station_del_parameters *params)
1506 {
1507         struct ieee80211_sub_if_data *sdata;
1508
1509         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1510
1511         if (params->mac)
1512                 return sta_info_destroy_addr_bss(sdata, params->mac);
1513
1514         sta_info_flush(sdata);
1515         return 0;
1516 }
1517
1518 static int ieee80211_change_station(struct wiphy *wiphy,
1519                                     struct net_device *dev, const u8 *mac,
1520                                     struct station_parameters *params)
1521 {
1522         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1523         struct ieee80211_local *local = wiphy_priv(wiphy);
1524         struct sta_info *sta;
1525         struct ieee80211_sub_if_data *vlansdata;
1526         enum cfg80211_station_type statype;
1527         int err;
1528
1529         mutex_lock(&local->sta_mtx);
1530
1531         sta = sta_info_get_bss(sdata, mac);
1532         if (!sta) {
1533                 err = -ENOENT;
1534                 goto out_err;
1535         }
1536
1537         switch (sdata->vif.type) {
1538         case NL80211_IFTYPE_MESH_POINT:
1539                 if (sdata->u.mesh.user_mpm)
1540                         statype = CFG80211_STA_MESH_PEER_USER;
1541                 else
1542                         statype = CFG80211_STA_MESH_PEER_KERNEL;
1543                 break;
1544         case NL80211_IFTYPE_ADHOC:
1545                 statype = CFG80211_STA_IBSS;
1546                 break;
1547         case NL80211_IFTYPE_STATION:
1548                 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1549                         statype = CFG80211_STA_AP_STA;
1550                         break;
1551                 }
1552                 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1553                         statype = CFG80211_STA_TDLS_PEER_ACTIVE;
1554                 else
1555                         statype = CFG80211_STA_TDLS_PEER_SETUP;
1556                 break;
1557         case NL80211_IFTYPE_AP:
1558         case NL80211_IFTYPE_AP_VLAN:
1559                 if (test_sta_flag(sta, WLAN_STA_ASSOC))
1560                         statype = CFG80211_STA_AP_CLIENT;
1561                 else
1562                         statype = CFG80211_STA_AP_CLIENT_UNASSOC;
1563                 break;
1564         default:
1565                 err = -EOPNOTSUPP;
1566                 goto out_err;
1567         }
1568
1569         err = cfg80211_check_station_change(wiphy, params, statype);
1570         if (err)
1571                 goto out_err;
1572
1573         if (params->vlan && params->vlan != sta->sdata->dev) {
1574                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1575
1576                 if (params->vlan->ieee80211_ptr->use_4addr) {
1577                         if (vlansdata->u.vlan.sta) {
1578                                 err = -EBUSY;
1579                                 goto out_err;
1580                         }
1581
1582                         rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1583                         __ieee80211_check_fast_rx_iface(vlansdata);
1584                 }
1585
1586                 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
1587                     sta->sdata->u.vlan.sta)
1588                         RCU_INIT_POINTER(sta->sdata->u.vlan.sta, NULL);
1589
1590                 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1591                         ieee80211_vif_dec_num_mcast(sta->sdata);
1592
1593                 sta->sdata = vlansdata;
1594                 ieee80211_check_fast_xmit(sta);
1595
1596                 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1597                         ieee80211_vif_inc_num_mcast(sta->sdata);
1598
1599                 ieee80211_send_layer2_update(sta);
1600         }
1601
1602         err = sta_apply_parameters(local, sta, params);
1603         if (err)
1604                 goto out_err;
1605
1606         mutex_unlock(&local->sta_mtx);
1607
1608         if ((sdata->vif.type == NL80211_IFTYPE_AP ||
1609              sdata->vif.type == NL80211_IFTYPE_AP_VLAN) &&
1610             sta->known_smps_mode != sta->sdata->bss->req_smps &&
1611             test_sta_flag(sta, WLAN_STA_AUTHORIZED) &&
1612             sta_info_tx_streams(sta) != 1) {
1613                 ht_dbg(sta->sdata,
1614                        "%pM just authorized and MIMO capable - update SMPS\n",
1615                        sta->sta.addr);
1616                 ieee80211_send_smps_action(sta->sdata,
1617                         sta->sdata->bss->req_smps,
1618                         sta->sta.addr,
1619                         sta->sdata->vif.bss_conf.bssid);
1620         }
1621
1622         if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1623             params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1624                 ieee80211_recalc_ps(local);
1625                 ieee80211_recalc_ps_vif(sdata);
1626         }
1627
1628         return 0;
1629 out_err:
1630         mutex_unlock(&local->sta_mtx);
1631         return err;
1632 }
1633
1634 #ifdef CONFIG_MAC80211_MESH
1635 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1636                                const u8 *dst, const u8 *next_hop)
1637 {
1638         struct ieee80211_sub_if_data *sdata;
1639         struct mesh_path *mpath;
1640         struct sta_info *sta;
1641
1642         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1643
1644         rcu_read_lock();
1645         sta = sta_info_get(sdata, next_hop);
1646         if (!sta) {
1647                 rcu_read_unlock();
1648                 return -ENOENT;
1649         }
1650
1651         mpath = mesh_path_add(sdata, dst);
1652         if (IS_ERR(mpath)) {
1653                 rcu_read_unlock();
1654                 return PTR_ERR(mpath);
1655         }
1656
1657         mesh_path_fix_nexthop(mpath, sta);
1658
1659         rcu_read_unlock();
1660         return 0;
1661 }
1662
1663 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1664                                const u8 *dst)
1665 {
1666         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1667
1668         if (dst)
1669                 return mesh_path_del(sdata, dst);
1670
1671         mesh_path_flush_by_iface(sdata);
1672         return 0;
1673 }
1674
1675 static int ieee80211_change_mpath(struct wiphy *wiphy, struct net_device *dev,
1676                                   const u8 *dst, const u8 *next_hop)
1677 {
1678         struct ieee80211_sub_if_data *sdata;
1679         struct mesh_path *mpath;
1680         struct sta_info *sta;
1681
1682         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1683
1684         rcu_read_lock();
1685
1686         sta = sta_info_get(sdata, next_hop);
1687         if (!sta) {
1688                 rcu_read_unlock();
1689                 return -ENOENT;
1690         }
1691
1692         mpath = mesh_path_lookup(sdata, dst);
1693         if (!mpath) {
1694                 rcu_read_unlock();
1695                 return -ENOENT;
1696         }
1697
1698         mesh_path_fix_nexthop(mpath, sta);
1699
1700         rcu_read_unlock();
1701         return 0;
1702 }
1703
1704 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1705                             struct mpath_info *pinfo)
1706 {
1707         struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1708
1709         if (next_hop_sta)
1710                 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1711         else
1712                 eth_zero_addr(next_hop);
1713
1714         memset(pinfo, 0, sizeof(*pinfo));
1715
1716         pinfo->generation = mpath->sdata->u.mesh.mesh_paths_generation;
1717
1718         pinfo->filled = MPATH_INFO_FRAME_QLEN |
1719                         MPATH_INFO_SN |
1720                         MPATH_INFO_METRIC |
1721                         MPATH_INFO_EXPTIME |
1722                         MPATH_INFO_DISCOVERY_TIMEOUT |
1723                         MPATH_INFO_DISCOVERY_RETRIES |
1724                         MPATH_INFO_FLAGS;
1725
1726         pinfo->frame_qlen = mpath->frame_queue.qlen;
1727         pinfo->sn = mpath->sn;
1728         pinfo->metric = mpath->metric;
1729         if (time_before(jiffies, mpath->exp_time))
1730                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1731         pinfo->discovery_timeout =
1732                         jiffies_to_msecs(mpath->discovery_timeout);
1733         pinfo->discovery_retries = mpath->discovery_retries;
1734         if (mpath->flags & MESH_PATH_ACTIVE)
1735                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1736         if (mpath->flags & MESH_PATH_RESOLVING)
1737                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1738         if (mpath->flags & MESH_PATH_SN_VALID)
1739                 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1740         if (mpath->flags & MESH_PATH_FIXED)
1741                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1742         if (mpath->flags & MESH_PATH_RESOLVED)
1743                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
1744 }
1745
1746 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1747                                u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1748
1749 {
1750         struct ieee80211_sub_if_data *sdata;
1751         struct mesh_path *mpath;
1752
1753         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1754
1755         rcu_read_lock();
1756         mpath = mesh_path_lookup(sdata, dst);
1757         if (!mpath) {
1758                 rcu_read_unlock();
1759                 return -ENOENT;
1760         }
1761         memcpy(dst, mpath->dst, ETH_ALEN);
1762         mpath_set_pinfo(mpath, next_hop, pinfo);
1763         rcu_read_unlock();
1764         return 0;
1765 }
1766
1767 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1768                                 int idx, u8 *dst, u8 *next_hop,
1769                                 struct mpath_info *pinfo)
1770 {
1771         struct ieee80211_sub_if_data *sdata;
1772         struct mesh_path *mpath;
1773
1774         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1775
1776         rcu_read_lock();
1777         mpath = mesh_path_lookup_by_idx(sdata, idx);
1778         if (!mpath) {
1779                 rcu_read_unlock();
1780                 return -ENOENT;
1781         }
1782         memcpy(dst, mpath->dst, ETH_ALEN);
1783         mpath_set_pinfo(mpath, next_hop, pinfo);
1784         rcu_read_unlock();
1785         return 0;
1786 }
1787
1788 static void mpp_set_pinfo(struct mesh_path *mpath, u8 *mpp,
1789                           struct mpath_info *pinfo)
1790 {
1791         memset(pinfo, 0, sizeof(*pinfo));
1792         memcpy(mpp, mpath->mpp, ETH_ALEN);
1793
1794         pinfo->generation = mpath->sdata->u.mesh.mpp_paths_generation;
1795 }
1796
1797 static int ieee80211_get_mpp(struct wiphy *wiphy, struct net_device *dev,
1798                              u8 *dst, u8 *mpp, struct mpath_info *pinfo)
1799
1800 {
1801         struct ieee80211_sub_if_data *sdata;
1802         struct mesh_path *mpath;
1803
1804         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1805
1806         rcu_read_lock();
1807         mpath = mpp_path_lookup(sdata, dst);
1808         if (!mpath) {
1809                 rcu_read_unlock();
1810                 return -ENOENT;
1811         }
1812         memcpy(dst, mpath->dst, ETH_ALEN);
1813         mpp_set_pinfo(mpath, mpp, pinfo);
1814         rcu_read_unlock();
1815         return 0;
1816 }
1817
1818 static int ieee80211_dump_mpp(struct wiphy *wiphy, struct net_device *dev,
1819                               int idx, u8 *dst, u8 *mpp,
1820                               struct mpath_info *pinfo)
1821 {
1822         struct ieee80211_sub_if_data *sdata;
1823         struct mesh_path *mpath;
1824
1825         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1826
1827         rcu_read_lock();
1828         mpath = mpp_path_lookup_by_idx(sdata, idx);
1829         if (!mpath) {
1830                 rcu_read_unlock();
1831                 return -ENOENT;
1832         }
1833         memcpy(dst, mpath->dst, ETH_ALEN);
1834         mpp_set_pinfo(mpath, mpp, pinfo);
1835         rcu_read_unlock();
1836         return 0;
1837 }
1838
1839 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1840                                 struct net_device *dev,
1841                                 struct mesh_config *conf)
1842 {
1843         struct ieee80211_sub_if_data *sdata;
1844         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1845
1846         memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1847         return 0;
1848 }
1849
1850 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1851 {
1852         return (mask >> (parm-1)) & 0x1;
1853 }
1854
1855 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1856                 const struct mesh_setup *setup)
1857 {
1858         u8 *new_ie;
1859         const u8 *old_ie;
1860         struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1861                                         struct ieee80211_sub_if_data, u.mesh);
1862
1863         /* allocate information elements */
1864         new_ie = NULL;
1865         old_ie = ifmsh->ie;
1866
1867         if (setup->ie_len) {
1868                 new_ie = kmemdup(setup->ie, setup->ie_len,
1869                                 GFP_KERNEL);
1870                 if (!new_ie)
1871                         return -ENOMEM;
1872         }
1873         ifmsh->ie_len = setup->ie_len;
1874         ifmsh->ie = new_ie;
1875         kfree(old_ie);
1876
1877         /* now copy the rest of the setup parameters */
1878         ifmsh->mesh_id_len = setup->mesh_id_len;
1879         memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1880         ifmsh->mesh_sp_id = setup->sync_method;
1881         ifmsh->mesh_pp_id = setup->path_sel_proto;
1882         ifmsh->mesh_pm_id = setup->path_metric;
1883         ifmsh->user_mpm = setup->user_mpm;
1884         ifmsh->mesh_auth_id = setup->auth_id;
1885         ifmsh->security = IEEE80211_MESH_SEC_NONE;
1886         ifmsh->userspace_handles_dfs = setup->userspace_handles_dfs;
1887         if (setup->is_authenticated)
1888                 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1889         if (setup->is_secure)
1890                 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1891
1892         /* mcast rate setting in Mesh Node */
1893         memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1894                                                 sizeof(setup->mcast_rate));
1895         sdata->vif.bss_conf.basic_rates = setup->basic_rates;
1896
1897         sdata->vif.bss_conf.beacon_int = setup->beacon_interval;
1898         sdata->vif.bss_conf.dtim_period = setup->dtim_period;
1899
1900         return 0;
1901 }
1902
1903 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1904                                         struct net_device *dev, u32 mask,
1905                                         const struct mesh_config *nconf)
1906 {
1907         struct mesh_config *conf;
1908         struct ieee80211_sub_if_data *sdata;
1909         struct ieee80211_if_mesh *ifmsh;
1910
1911         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1912         ifmsh = &sdata->u.mesh;
1913
1914         /* Set the config options which we are interested in setting */
1915         conf = &(sdata->u.mesh.mshcfg);
1916         if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1917                 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1918         if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1919                 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1920         if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1921                 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1922         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1923                 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1924         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1925                 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1926         if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1927                 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1928         if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1929                 conf->element_ttl = nconf->element_ttl;
1930         if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) {
1931                 if (ifmsh->user_mpm)
1932                         return -EBUSY;
1933                 conf->auto_open_plinks = nconf->auto_open_plinks;
1934         }
1935         if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
1936                 conf->dot11MeshNbrOffsetMaxNeighbor =
1937                         nconf->dot11MeshNbrOffsetMaxNeighbor;
1938         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1939                 conf->dot11MeshHWMPmaxPREQretries =
1940                         nconf->dot11MeshHWMPmaxPREQretries;
1941         if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1942                 conf->path_refresh_time = nconf->path_refresh_time;
1943         if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1944                 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1945         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1946                 conf->dot11MeshHWMPactivePathTimeout =
1947                         nconf->dot11MeshHWMPactivePathTimeout;
1948         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1949                 conf->dot11MeshHWMPpreqMinInterval =
1950                         nconf->dot11MeshHWMPpreqMinInterval;
1951         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1952                 conf->dot11MeshHWMPperrMinInterval =
1953                         nconf->dot11MeshHWMPperrMinInterval;
1954         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1955                            mask))
1956                 conf->dot11MeshHWMPnetDiameterTraversalTime =
1957                         nconf->dot11MeshHWMPnetDiameterTraversalTime;
1958         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1959                 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1960                 ieee80211_mesh_root_setup(ifmsh);
1961         }
1962         if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1963                 /* our current gate announcement implementation rides on root
1964                  * announcements, so require this ifmsh to also be a root node
1965                  * */
1966                 if (nconf->dot11MeshGateAnnouncementProtocol &&
1967                     !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
1968                         conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
1969                         ieee80211_mesh_root_setup(ifmsh);
1970                 }
1971                 conf->dot11MeshGateAnnouncementProtocol =
1972                         nconf->dot11MeshGateAnnouncementProtocol;
1973         }
1974         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
1975                 conf->dot11MeshHWMPRannInterval =
1976                         nconf->dot11MeshHWMPRannInterval;
1977         if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
1978                 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1979         if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
1980                 /* our RSSI threshold implementation is supported only for
1981                  * devices that report signal in dBm.
1982                  */
1983                 if (!ieee80211_hw_check(&sdata->local->hw, SIGNAL_DBM))
1984                         return -ENOTSUPP;
1985                 conf->rssi_threshold = nconf->rssi_threshold;
1986         }
1987         if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
1988                 conf->ht_opmode = nconf->ht_opmode;
1989                 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
1990                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1991         }
1992         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
1993                 conf->dot11MeshHWMPactivePathToRootTimeout =
1994                         nconf->dot11MeshHWMPactivePathToRootTimeout;
1995         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
1996                 conf->dot11MeshHWMProotInterval =
1997                         nconf->dot11MeshHWMProotInterval;
1998         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
1999                 conf->dot11MeshHWMPconfirmationInterval =
2000                         nconf->dot11MeshHWMPconfirmationInterval;
2001         if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) {
2002                 conf->power_mode = nconf->power_mode;
2003                 ieee80211_mps_local_status_update(sdata);
2004         }
2005         if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask))
2006                 conf->dot11MeshAwakeWindowDuration =
2007                         nconf->dot11MeshAwakeWindowDuration;
2008         if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask))
2009                 conf->plink_timeout = nconf->plink_timeout;
2010         ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON);
2011         return 0;
2012 }
2013
2014 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
2015                                const struct mesh_config *conf,
2016                                const struct mesh_setup *setup)
2017 {
2018         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2019         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
2020         int err;
2021
2022         memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
2023         err = copy_mesh_setup(ifmsh, setup);
2024         if (err)
2025                 return err;
2026
2027         sdata->control_port_over_nl80211 = setup->control_port_over_nl80211;
2028
2029         /* can mesh use other SMPS modes? */
2030         sdata->smps_mode = IEEE80211_SMPS_OFF;
2031         sdata->needed_rx_chains = sdata->local->rx_chains;
2032
2033         mutex_lock(&sdata->local->mtx);
2034         err = ieee80211_vif_use_channel(sdata, &setup->chandef,
2035                                         IEEE80211_CHANCTX_SHARED);
2036         mutex_unlock(&sdata->local->mtx);
2037         if (err)
2038                 return err;
2039
2040         return ieee80211_start_mesh(sdata);
2041 }
2042
2043 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
2044 {
2045         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2046
2047         ieee80211_stop_mesh(sdata);
2048         mutex_lock(&sdata->local->mtx);
2049         ieee80211_vif_release_channel(sdata);
2050         mutex_unlock(&sdata->local->mtx);
2051
2052         return 0;
2053 }
2054 #endif
2055
2056 static int ieee80211_change_bss(struct wiphy *wiphy,
2057                                 struct net_device *dev,
2058                                 struct bss_parameters *params)
2059 {
2060         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2061         struct ieee80211_supported_band *sband;
2062         u32 changed = 0;
2063
2064         if (!sdata_dereference(sdata->u.ap.beacon, sdata))
2065                 return -ENOENT;
2066
2067         sband = ieee80211_get_sband(sdata);
2068         if (!sband)
2069                 return -EINVAL;
2070
2071         if (params->use_cts_prot >= 0) {
2072                 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
2073                 changed |= BSS_CHANGED_ERP_CTS_PROT;
2074         }
2075         if (params->use_short_preamble >= 0) {
2076                 sdata->vif.bss_conf.use_short_preamble =
2077                         params->use_short_preamble;
2078                 changed |= BSS_CHANGED_ERP_PREAMBLE;
2079         }
2080
2081         if (!sdata->vif.bss_conf.use_short_slot &&
2082             sband->band == NL80211_BAND_5GHZ) {
2083                 sdata->vif.bss_conf.use_short_slot = true;
2084                 changed |= BSS_CHANGED_ERP_SLOT;
2085         }
2086
2087         if (params->use_short_slot_time >= 0) {
2088                 sdata->vif.bss_conf.use_short_slot =
2089                         params->use_short_slot_time;
2090                 changed |= BSS_CHANGED_ERP_SLOT;
2091         }
2092
2093         if (params->basic_rates) {
2094                 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
2095                                          wiphy->bands[sband->band],
2096                                          params->basic_rates,
2097                                          params->basic_rates_len,
2098                                          &sdata->vif.bss_conf.basic_rates);
2099                 changed |= BSS_CHANGED_BASIC_RATES;
2100                 ieee80211_check_rate_mask(sdata);
2101         }
2102
2103         if (params->ap_isolate >= 0) {
2104                 if (params->ap_isolate)
2105                         sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
2106                 else
2107                         sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
2108                 ieee80211_check_fast_rx_iface(sdata);
2109         }
2110
2111         if (params->ht_opmode >= 0) {
2112                 sdata->vif.bss_conf.ht_operation_mode =
2113                         (u16) params->ht_opmode;
2114                 changed |= BSS_CHANGED_HT;
2115         }
2116
2117         if (params->p2p_ctwindow >= 0) {
2118                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
2119                                         ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
2120                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
2121                         params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
2122                 changed |= BSS_CHANGED_P2P_PS;
2123         }
2124
2125         if (params->p2p_opp_ps > 0) {
2126                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
2127                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
2128                 changed |= BSS_CHANGED_P2P_PS;
2129         } else if (params->p2p_opp_ps == 0) {
2130                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
2131                                         ~IEEE80211_P2P_OPPPS_ENABLE_BIT;
2132                 changed |= BSS_CHANGED_P2P_PS;
2133         }
2134
2135         ieee80211_bss_info_change_notify(sdata, changed);
2136
2137         return 0;
2138 }
2139
2140 static int ieee80211_set_txq_params(struct wiphy *wiphy,
2141                                     struct net_device *dev,
2142                                     struct ieee80211_txq_params *params)
2143 {
2144         struct ieee80211_local *local = wiphy_priv(wiphy);
2145         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2146         struct ieee80211_tx_queue_params p;
2147
2148         if (!local->ops->conf_tx)
2149                 return -EOPNOTSUPP;
2150
2151         if (local->hw.queues < IEEE80211_NUM_ACS)
2152                 return -EOPNOTSUPP;
2153
2154         memset(&p, 0, sizeof(p));
2155         p.aifs = params->aifs;
2156         p.cw_max = params->cwmax;
2157         p.cw_min = params->cwmin;
2158         p.txop = params->txop;
2159
2160         /*
2161          * Setting tx queue params disables u-apsd because it's only
2162          * called in master mode.
2163          */
2164         p.uapsd = false;
2165
2166         ieee80211_regulatory_limit_wmm_params(sdata, &p, params->ac);
2167
2168         sdata->tx_conf[params->ac] = p;
2169         if (drv_conf_tx(local, sdata, params->ac, &p)) {
2170                 wiphy_debug(local->hw.wiphy,
2171                             "failed to set TX queue parameters for AC %d\n",
2172                             params->ac);
2173                 return -EINVAL;
2174         }
2175
2176         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
2177
2178         return 0;
2179 }
2180
2181 #ifdef CONFIG_PM
2182 static int ieee80211_suspend(struct wiphy *wiphy,
2183                              struct cfg80211_wowlan *wowlan)
2184 {
2185         return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
2186 }
2187
2188 static int ieee80211_resume(struct wiphy *wiphy)
2189 {
2190         return __ieee80211_resume(wiphy_priv(wiphy));
2191 }
2192 #else
2193 #define ieee80211_suspend NULL
2194 #define ieee80211_resume NULL
2195 #endif
2196
2197 static int ieee80211_scan(struct wiphy *wiphy,
2198                           struct cfg80211_scan_request *req)
2199 {
2200         struct ieee80211_sub_if_data *sdata;
2201
2202         sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
2203
2204         switch (ieee80211_vif_type_p2p(&sdata->vif)) {
2205         case NL80211_IFTYPE_STATION:
2206         case NL80211_IFTYPE_ADHOC:
2207         case NL80211_IFTYPE_MESH_POINT:
2208         case NL80211_IFTYPE_P2P_CLIENT:
2209         case NL80211_IFTYPE_P2P_DEVICE:
2210                 break;
2211         case NL80211_IFTYPE_P2P_GO:
2212                 if (sdata->local->ops->hw_scan)
2213                         break;
2214                 /*
2215                  * FIXME: implement NoA while scanning in software,
2216                  * for now fall through to allow scanning only when
2217                  * beaconing hasn't been configured yet
2218                  */
2219                 /* fall through */
2220         case NL80211_IFTYPE_AP:
2221                 /*
2222                  * If the scan has been forced (and the driver supports
2223                  * forcing), don't care about being beaconing already.
2224                  * This will create problems to the attached stations (e.g. all
2225                  * the  frames sent while scanning on other channel will be
2226                  * lost)
2227                  */
2228                 if (sdata->u.ap.beacon &&
2229                     (!(wiphy->features & NL80211_FEATURE_AP_SCAN) ||
2230                      !(req->flags & NL80211_SCAN_FLAG_AP)))
2231                         return -EOPNOTSUPP;
2232                 break;
2233         case NL80211_IFTYPE_NAN:
2234         default:
2235                 return -EOPNOTSUPP;
2236         }
2237
2238         return ieee80211_request_scan(sdata, req);
2239 }
2240
2241 static void ieee80211_abort_scan(struct wiphy *wiphy, struct wireless_dev *wdev)
2242 {
2243         ieee80211_scan_cancel(wiphy_priv(wiphy));
2244 }
2245
2246 static int
2247 ieee80211_sched_scan_start(struct wiphy *wiphy,
2248                            struct net_device *dev,
2249                            struct cfg80211_sched_scan_request *req)
2250 {
2251         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2252
2253         if (!sdata->local->ops->sched_scan_start)
2254                 return -EOPNOTSUPP;
2255
2256         return ieee80211_request_sched_scan_start(sdata, req);
2257 }
2258
2259 static int
2260 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev,
2261                           u64 reqid)
2262 {
2263         struct ieee80211_local *local = wiphy_priv(wiphy);
2264
2265         if (!local->ops->sched_scan_stop)
2266                 return -EOPNOTSUPP;
2267
2268         return ieee80211_request_sched_scan_stop(local);
2269 }
2270
2271 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
2272                           struct cfg80211_auth_request *req)
2273 {
2274         return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2275 }
2276
2277 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
2278                            struct cfg80211_assoc_request *req)
2279 {
2280         return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2281 }
2282
2283 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
2284                             struct cfg80211_deauth_request *req)
2285 {
2286         return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2287 }
2288
2289 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
2290                               struct cfg80211_disassoc_request *req)
2291 {
2292         return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2293 }
2294
2295 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2296                                struct cfg80211_ibss_params *params)
2297 {
2298         return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
2299 }
2300
2301 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2302 {
2303         return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2304 }
2305
2306 static int ieee80211_join_ocb(struct wiphy *wiphy, struct net_device *dev,
2307                               struct ocb_setup *setup)
2308 {
2309         return ieee80211_ocb_join(IEEE80211_DEV_TO_SUB_IF(dev), setup);
2310 }
2311
2312 static int ieee80211_leave_ocb(struct wiphy *wiphy, struct net_device *dev)
2313 {
2314         return ieee80211_ocb_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2315 }
2316
2317 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev,
2318                                     int rate[NUM_NL80211_BANDS])
2319 {
2320         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2321
2322         memcpy(sdata->vif.bss_conf.mcast_rate, rate,
2323                sizeof(int) * NUM_NL80211_BANDS);
2324
2325         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_MCAST_RATE);
2326
2327         return 0;
2328 }
2329
2330 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
2331 {
2332         struct ieee80211_local *local = wiphy_priv(wiphy);
2333         int err;
2334
2335         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
2336                 ieee80211_check_fast_xmit_all(local);
2337
2338                 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
2339
2340                 if (err) {
2341                         ieee80211_check_fast_xmit_all(local);
2342                         return err;
2343                 }
2344         }
2345
2346         if ((changed & WIPHY_PARAM_COVERAGE_CLASS) ||
2347             (changed & WIPHY_PARAM_DYN_ACK)) {
2348                 s16 coverage_class;
2349
2350                 coverage_class = changed & WIPHY_PARAM_COVERAGE_CLASS ?
2351                                         wiphy->coverage_class : -1;
2352                 err = drv_set_coverage_class(local, coverage_class);
2353
2354                 if (err)
2355                         return err;
2356         }
2357
2358         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
2359                 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
2360
2361                 if (err)
2362                         return err;
2363         }
2364
2365         if (changed & WIPHY_PARAM_RETRY_SHORT) {
2366                 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY)
2367                         return -EINVAL;
2368                 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
2369         }
2370         if (changed & WIPHY_PARAM_RETRY_LONG) {
2371                 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY)
2372                         return -EINVAL;
2373                 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
2374         }
2375         if (changed &
2376             (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
2377                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
2378
2379         if (changed & (WIPHY_PARAM_TXQ_LIMIT |
2380                        WIPHY_PARAM_TXQ_MEMORY_LIMIT |
2381                        WIPHY_PARAM_TXQ_QUANTUM))
2382                 ieee80211_txq_set_params(local);
2383
2384         return 0;
2385 }
2386
2387 static int ieee80211_set_tx_power(struct wiphy *wiphy,
2388                                   struct wireless_dev *wdev,
2389                                   enum nl80211_tx_power_setting type, int mbm)
2390 {
2391         struct ieee80211_local *local = wiphy_priv(wiphy);
2392         struct ieee80211_sub_if_data *sdata;
2393         enum nl80211_tx_power_setting txp_type = type;
2394         bool update_txp_type = false;
2395         bool has_monitor = false;
2396
2397         if (wdev) {
2398                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2399
2400                 if (sdata->vif.type == NL80211_IFTYPE_MONITOR) {
2401                         sdata = rtnl_dereference(local->monitor_sdata);
2402                         if (!sdata)
2403                                 return -EOPNOTSUPP;
2404                 }
2405
2406                 switch (type) {
2407                 case NL80211_TX_POWER_AUTOMATIC:
2408                         sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2409                         txp_type = NL80211_TX_POWER_LIMITED;
2410                         break;
2411                 case NL80211_TX_POWER_LIMITED:
2412                 case NL80211_TX_POWER_FIXED:
2413                         if (mbm < 0 || (mbm % 100))
2414                                 return -EOPNOTSUPP;
2415                         sdata->user_power_level = MBM_TO_DBM(mbm);
2416                         break;
2417                 }
2418
2419                 if (txp_type != sdata->vif.bss_conf.txpower_type) {
2420                         update_txp_type = true;
2421                         sdata->vif.bss_conf.txpower_type = txp_type;
2422                 }
2423
2424                 ieee80211_recalc_txpower(sdata, update_txp_type);
2425
2426                 return 0;
2427         }
2428
2429         switch (type) {
2430         case NL80211_TX_POWER_AUTOMATIC:
2431                 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2432                 txp_type = NL80211_TX_POWER_LIMITED;
2433                 break;
2434         case NL80211_TX_POWER_LIMITED:
2435         case NL80211_TX_POWER_FIXED:
2436                 if (mbm < 0 || (mbm % 100))
2437                         return -EOPNOTSUPP;
2438                 local->user_power_level = MBM_TO_DBM(mbm);
2439                 break;
2440         }
2441
2442         mutex_lock(&local->iflist_mtx);
2443         list_for_each_entry(sdata, &local->interfaces, list) {
2444                 if (sdata->vif.type == NL80211_IFTYPE_MONITOR) {
2445                         has_monitor = true;
2446                         continue;
2447                 }
2448                 sdata->user_power_level = local->user_power_level;
2449                 if (txp_type != sdata->vif.bss_conf.txpower_type)
2450                         update_txp_type = true;
2451                 sdata->vif.bss_conf.txpower_type = txp_type;
2452         }
2453         list_for_each_entry(sdata, &local->interfaces, list) {
2454                 if (sdata->vif.type == NL80211_IFTYPE_MONITOR)
2455                         continue;
2456                 ieee80211_recalc_txpower(sdata, update_txp_type);
2457         }
2458         mutex_unlock(&local->iflist_mtx);
2459
2460         if (has_monitor) {
2461                 sdata = rtnl_dereference(local->monitor_sdata);
2462                 if (sdata) {
2463                         sdata->user_power_level = local->user_power_level;
2464                         if (txp_type != sdata->vif.bss_conf.txpower_type)
2465                                 update_txp_type = true;
2466                         sdata->vif.bss_conf.txpower_type = txp_type;
2467
2468                         ieee80211_recalc_txpower(sdata, update_txp_type);
2469                 }
2470         }
2471
2472         return 0;
2473 }
2474
2475 static int ieee80211_get_tx_power(struct wiphy *wiphy,
2476                                   struct wireless_dev *wdev,
2477                                   int *dbm)
2478 {
2479         struct ieee80211_local *local = wiphy_priv(wiphy);
2480         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2481
2482         if (local->ops->get_txpower)
2483                 return drv_get_txpower(local, sdata, dbm);
2484
2485         if (!local->use_chanctx)
2486                 *dbm = local->hw.conf.power_level;
2487         else
2488                 *dbm = sdata->vif.bss_conf.txpower;
2489
2490         return 0;
2491 }
2492
2493 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
2494                                   const u8 *addr)
2495 {
2496         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2497
2498         memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
2499
2500         return 0;
2501 }
2502
2503 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
2504 {
2505         struct ieee80211_local *local = wiphy_priv(wiphy);
2506
2507         drv_rfkill_poll(local);
2508 }
2509
2510 #ifdef CONFIG_NL80211_TESTMODE
2511 static int ieee80211_testmode_cmd(struct wiphy *wiphy,
2512                                   struct wireless_dev *wdev,
2513                                   void *data, int len)
2514 {
2515         struct ieee80211_local *local = wiphy_priv(wiphy);
2516         struct ieee80211_vif *vif = NULL;
2517
2518         if (!local->ops->testmode_cmd)
2519                 return -EOPNOTSUPP;
2520
2521         if (wdev) {
2522                 struct ieee80211_sub_if_data *sdata;
2523
2524                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2525                 if (sdata->flags & IEEE80211_SDATA_IN_DRIVER)
2526                         vif = &sdata->vif;
2527         }
2528
2529         return local->ops->testmode_cmd(&local->hw, vif, data, len);
2530 }
2531
2532 static int ieee80211_testmode_dump(struct wiphy *wiphy,
2533                                    struct sk_buff *skb,
2534                                    struct netlink_callback *cb,
2535                                    void *data, int len)
2536 {
2537         struct ieee80211_local *local = wiphy_priv(wiphy);
2538
2539         if (!local->ops->testmode_dump)
2540                 return -EOPNOTSUPP;
2541
2542         return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
2543 }
2544 #endif
2545
2546 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
2547                                 enum ieee80211_smps_mode smps_mode)
2548 {
2549         struct sta_info *sta;
2550         enum ieee80211_smps_mode old_req;
2551
2552         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP))
2553                 return -EINVAL;
2554
2555         if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2556                 return 0;
2557
2558         old_req = sdata->u.ap.req_smps;
2559         sdata->u.ap.req_smps = smps_mode;
2560
2561         /* AUTOMATIC doesn't mean much for AP - don't allow it */
2562         if (old_req == smps_mode ||
2563             smps_mode == IEEE80211_SMPS_AUTOMATIC)
2564                 return 0;
2565
2566         ht_dbg(sdata,
2567                "SMPS %d requested in AP mode, sending Action frame to %d stations\n",
2568                smps_mode, atomic_read(&sdata->u.ap.num_mcast_sta));
2569
2570         mutex_lock(&sdata->local->sta_mtx);
2571         list_for_each_entry(sta, &sdata->local->sta_list, list) {
2572                 /*
2573                  * Only stations associated to our AP and
2574                  * associated VLANs
2575                  */
2576                 if (sta->sdata->bss != &sdata->u.ap)
2577                         continue;
2578
2579                 /* This station doesn't support MIMO - skip it */
2580                 if (sta_info_tx_streams(sta) == 1)
2581                         continue;
2582
2583                 /*
2584                  * Don't wake up a STA just to send the action frame
2585                  * unless we are getting more restrictive.
2586                  */
2587                 if (test_sta_flag(sta, WLAN_STA_PS_STA) &&
2588                     !ieee80211_smps_is_restrictive(sta->known_smps_mode,
2589                                                    smps_mode)) {
2590                         ht_dbg(sdata, "Won't send SMPS to sleeping STA %pM\n",
2591                                sta->sta.addr);
2592                         continue;
2593                 }
2594
2595                 /*
2596                  * If the STA is not authorized, wait until it gets
2597                  * authorized and the action frame will be sent then.
2598                  */
2599                 if (!test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2600                         continue;
2601
2602                 ht_dbg(sdata, "Sending SMPS to %pM\n", sta->sta.addr);
2603                 ieee80211_send_smps_action(sdata, smps_mode, sta->sta.addr,
2604                                            sdata->vif.bss_conf.bssid);
2605         }
2606         mutex_unlock(&sdata->local->sta_mtx);
2607
2608         sdata->smps_mode = smps_mode;
2609         ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2610
2611         return 0;
2612 }
2613
2614 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
2615                                  enum ieee80211_smps_mode smps_mode)
2616 {
2617         const u8 *ap;
2618         enum ieee80211_smps_mode old_req;
2619         int err;
2620         struct sta_info *sta;
2621         bool tdls_peer_found = false;
2622
2623         lockdep_assert_held(&sdata->wdev.mtx);
2624
2625         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION))
2626                 return -EINVAL;
2627
2628         old_req = sdata->u.mgd.req_smps;
2629         sdata->u.mgd.req_smps = smps_mode;
2630
2631         if (old_req == smps_mode &&
2632             smps_mode != IEEE80211_SMPS_AUTOMATIC)
2633                 return 0;
2634
2635         /*
2636          * If not associated, or current association is not an HT
2637          * association, there's no need to do anything, just store
2638          * the new value until we associate.
2639          */
2640         if (!sdata->u.mgd.associated ||
2641             sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2642                 return 0;
2643
2644         ap = sdata->u.mgd.associated->bssid;
2645
2646         rcu_read_lock();
2647         list_for_each_entry_rcu(sta, &sdata->local->sta_list, list) {
2648                 if (!sta->sta.tdls || sta->sdata != sdata || !sta->uploaded ||
2649                     !test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2650                         continue;
2651
2652                 tdls_peer_found = true;
2653                 break;
2654         }
2655         rcu_read_unlock();
2656
2657         if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
2658                 if (tdls_peer_found || !sdata->u.mgd.powersave)
2659                         smps_mode = IEEE80211_SMPS_OFF;
2660                 else
2661                         smps_mode = IEEE80211_SMPS_DYNAMIC;
2662         }
2663
2664         /* send SM PS frame to AP */
2665         err = ieee80211_send_smps_action(sdata, smps_mode,
2666                                          ap, ap);
2667         if (err)
2668                 sdata->u.mgd.req_smps = old_req;
2669         else if (smps_mode != IEEE80211_SMPS_OFF && tdls_peer_found)
2670                 ieee80211_teardown_tdls_peers(sdata);
2671
2672         return err;
2673 }
2674
2675 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2676                                     bool enabled, int timeout)
2677 {
2678         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2679         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2680
2681         if (sdata->vif.type != NL80211_IFTYPE_STATION)
2682                 return -EOPNOTSUPP;
2683
2684         if (!ieee80211_hw_check(&local->hw, SUPPORTS_PS))
2685                 return -EOPNOTSUPP;
2686
2687         if (enabled == sdata->u.mgd.powersave &&
2688             timeout == local->dynamic_ps_forced_timeout)
2689                 return 0;
2690
2691         sdata->u.mgd.powersave = enabled;
2692         local->dynamic_ps_forced_timeout = timeout;
2693
2694         /* no change, but if automatic follow powersave */
2695         sdata_lock(sdata);
2696         __ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps);
2697         sdata_unlock(sdata);
2698
2699         if (ieee80211_hw_check(&local->hw, SUPPORTS_DYNAMIC_PS))
2700                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2701
2702         ieee80211_recalc_ps(local);
2703         ieee80211_recalc_ps_vif(sdata);
2704         ieee80211_check_fast_rx_iface(sdata);
2705
2706         return 0;
2707 }
2708
2709 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
2710                                          struct net_device *dev,
2711                                          s32 rssi_thold, u32 rssi_hyst)
2712 {
2713         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2714         struct ieee80211_vif *vif = &sdata->vif;
2715         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2716
2717         if (rssi_thold == bss_conf->cqm_rssi_thold &&
2718             rssi_hyst == bss_conf->cqm_rssi_hyst)
2719                 return 0;
2720
2721         if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER &&
2722             !(sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI))
2723                 return -EOPNOTSUPP;
2724
2725         bss_conf->cqm_rssi_thold = rssi_thold;
2726         bss_conf->cqm_rssi_hyst = rssi_hyst;
2727         bss_conf->cqm_rssi_low = 0;
2728         bss_conf->cqm_rssi_high = 0;
2729         sdata->u.mgd.last_cqm_event_signal = 0;
2730
2731         /* tell the driver upon association, unless already associated */
2732         if (sdata->u.mgd.associated &&
2733             sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2734                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2735
2736         return 0;
2737 }
2738
2739 static int ieee80211_set_cqm_rssi_range_config(struct wiphy *wiphy,
2740                                                struct net_device *dev,
2741                                                s32 rssi_low, s32 rssi_high)
2742 {
2743         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2744         struct ieee80211_vif *vif = &sdata->vif;
2745         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2746
2747         if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER)
2748                 return -EOPNOTSUPP;
2749
2750         bss_conf->cqm_rssi_low = rssi_low;
2751         bss_conf->cqm_rssi_high = rssi_high;
2752         bss_conf->cqm_rssi_thold = 0;
2753         bss_conf->cqm_rssi_hyst = 0;
2754         sdata->u.mgd.last_cqm_event_signal = 0;
2755
2756         /* tell the driver upon association, unless already associated */
2757         if (sdata->u.mgd.associated &&
2758             sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2759                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2760
2761         return 0;
2762 }
2763
2764 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
2765                                       struct net_device *dev,
2766                                       const u8 *addr,
2767                                       const struct cfg80211_bitrate_mask *mask)
2768 {
2769         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2770         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2771         int i, ret;
2772
2773         if (!ieee80211_sdata_running(sdata))
2774                 return -ENETDOWN;
2775
2776         /*
2777          * If active validate the setting and reject it if it doesn't leave
2778          * at least one basic rate usable, since we really have to be able
2779          * to send something, and if we're an AP we have to be able to do
2780          * so at a basic rate so that all clients can receive it.
2781          */
2782         if (rcu_access_pointer(sdata->vif.chanctx_conf) &&
2783             sdata->vif.bss_conf.chandef.chan) {
2784                 u32 basic_rates = sdata->vif.bss_conf.basic_rates;
2785                 enum nl80211_band band = sdata->vif.bss_conf.chandef.chan->band;
2786
2787                 if (!(mask->control[band].legacy & basic_rates))
2788                         return -EINVAL;
2789         }
2790
2791         if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL)) {
2792                 ret = drv_set_bitrate_mask(local, sdata, mask);
2793                 if (ret)
2794                         return ret;
2795         }
2796
2797         for (i = 0; i < NUM_NL80211_BANDS; i++) {
2798                 struct ieee80211_supported_band *sband = wiphy->bands[i];
2799                 int j;
2800
2801                 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2802                 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs,
2803                        sizeof(mask->control[i].ht_mcs));
2804                 memcpy(sdata->rc_rateidx_vht_mcs_mask[i],
2805                        mask->control[i].vht_mcs,
2806                        sizeof(mask->control[i].vht_mcs));
2807
2808                 sdata->rc_has_mcs_mask[i] = false;
2809                 sdata->rc_has_vht_mcs_mask[i] = false;
2810                 if (!sband)
2811                         continue;
2812
2813                 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++) {
2814                         if (~sdata->rc_rateidx_mcs_mask[i][j]) {
2815                                 sdata->rc_has_mcs_mask[i] = true;
2816                                 break;
2817                         }
2818                 }
2819
2820                 for (j = 0; j < NL80211_VHT_NSS_MAX; j++) {
2821                         if (~sdata->rc_rateidx_vht_mcs_mask[i][j]) {
2822                                 sdata->rc_has_vht_mcs_mask[i] = true;
2823                                 break;
2824                         }
2825                 }
2826         }
2827
2828         return 0;
2829 }
2830
2831 static int ieee80211_start_radar_detection(struct wiphy *wiphy,
2832                                            struct net_device *dev,
2833                                            struct cfg80211_chan_def *chandef,
2834                                            u32 cac_time_ms)
2835 {
2836         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2837         struct ieee80211_local *local = sdata->local;
2838         int err;
2839
2840         mutex_lock(&local->mtx);
2841         if (!list_empty(&local->roc_list) || local->scanning) {
2842                 err = -EBUSY;
2843                 goto out_unlock;
2844         }
2845
2846         /* whatever, but channel contexts should not complain about that one */
2847         sdata->smps_mode = IEEE80211_SMPS_OFF;
2848         sdata->needed_rx_chains = local->rx_chains;
2849
2850         err = ieee80211_vif_use_channel(sdata, chandef,
2851                                         IEEE80211_CHANCTX_SHARED);
2852         if (err)
2853                 goto out_unlock;
2854
2855         ieee80211_queue_delayed_work(&sdata->local->hw,
2856                                      &sdata->dfs_cac_timer_work,
2857                                      msecs_to_jiffies(cac_time_ms));
2858
2859  out_unlock:
2860         mutex_unlock(&local->mtx);
2861         return err;
2862 }
2863
2864 static struct cfg80211_beacon_data *
2865 cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon)
2866 {
2867         struct cfg80211_beacon_data *new_beacon;
2868         u8 *pos;
2869         int len;
2870
2871         len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len +
2872               beacon->proberesp_ies_len + beacon->assocresp_ies_len +
2873               beacon->probe_resp_len;
2874
2875         new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL);
2876         if (!new_beacon)
2877                 return NULL;
2878
2879         pos = (u8 *)(new_beacon + 1);
2880         if (beacon->head_len) {
2881                 new_beacon->head_len = beacon->head_len;
2882                 new_beacon->head = pos;
2883                 memcpy(pos, beacon->head, beacon->head_len);
2884                 pos += beacon->head_len;
2885         }
2886         if (beacon->tail_len) {
2887                 new_beacon->tail_len = beacon->tail_len;
2888                 new_beacon->tail = pos;
2889                 memcpy(pos, beacon->tail, beacon->tail_len);
2890                 pos += beacon->tail_len;
2891         }
2892         if (beacon->beacon_ies_len) {
2893                 new_beacon->beacon_ies_len = beacon->beacon_ies_len;
2894                 new_beacon->beacon_ies = pos;
2895                 memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len);
2896                 pos += beacon->beacon_ies_len;
2897         }
2898         if (beacon->proberesp_ies_len) {
2899                 new_beacon->proberesp_ies_len = beacon->proberesp_ies_len;
2900                 new_beacon->proberesp_ies = pos;
2901                 memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len);
2902                 pos += beacon->proberesp_ies_len;
2903         }
2904         if (beacon->assocresp_ies_len) {
2905                 new_beacon->assocresp_ies_len = beacon->assocresp_ies_len;
2906                 new_beacon->assocresp_ies = pos;
2907                 memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len);
2908                 pos += beacon->assocresp_ies_len;
2909         }
2910         if (beacon->probe_resp_len) {
2911                 new_beacon->probe_resp_len = beacon->probe_resp_len;
2912                 new_beacon->probe_resp = pos;
2913                 memcpy(pos, beacon->probe_resp, beacon->probe_resp_len);
2914                 pos += beacon->probe_resp_len;
2915         }
2916
2917         return new_beacon;
2918 }
2919
2920 void ieee80211_csa_finish(struct ieee80211_vif *vif)
2921 {
2922         struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2923
2924         ieee80211_queue_work(&sdata->local->hw,
2925                              &sdata->csa_finalize_work);
2926 }
2927 EXPORT_SYMBOL(ieee80211_csa_finish);
2928
2929 static int ieee80211_set_after_csa_beacon(struct ieee80211_sub_if_data *sdata,
2930                                           u32 *changed)
2931 {
2932         int err;
2933
2934         switch (sdata->vif.type) {
2935         case NL80211_IFTYPE_AP:
2936                 err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon,
2937                                               NULL);
2938                 kfree(sdata->u.ap.next_beacon);
2939                 sdata->u.ap.next_beacon = NULL;
2940
2941                 if (err < 0)
2942                         return err;
2943                 *changed |= err;
2944                 break;
2945         case NL80211_IFTYPE_ADHOC:
2946                 err = ieee80211_ibss_finish_csa(sdata);
2947                 if (err < 0)
2948                         return err;
2949                 *changed |= err;
2950                 break;
2951 #ifdef CONFIG_MAC80211_MESH
2952         case NL80211_IFTYPE_MESH_POINT:
2953                 err = ieee80211_mesh_finish_csa(sdata);
2954                 if (err < 0)
2955                         return err;
2956                 *changed |= err;
2957                 break;
2958 #endif
2959         default:
2960                 WARN_ON(1);
2961                 return -EINVAL;
2962         }
2963
2964         return 0;
2965 }
2966
2967 static int __ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
2968 {
2969         struct ieee80211_local *local = sdata->local;
2970         u32 changed = 0;
2971         int err;
2972
2973         sdata_assert_lock(sdata);
2974         lockdep_assert_held(&local->mtx);
2975         lockdep_assert_held(&local->chanctx_mtx);
2976
2977         /*
2978          * using reservation isn't immediate as it may be deferred until later
2979          * with multi-vif. once reservation is complete it will re-schedule the
2980          * work with no reserved_chanctx so verify chandef to check if it
2981          * completed successfully
2982          */
2983
2984         if (sdata->reserved_chanctx) {
2985                 /*
2986                  * with multi-vif csa driver may call ieee80211_csa_finish()
2987                  * many times while waiting for other interfaces to use their
2988                  * reservations
2989                  */
2990                 if (sdata->reserved_ready)
2991                         return 0;
2992
2993                 return ieee80211_vif_use_reserved_context(sdata);
2994         }
2995
2996         if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef,
2997                                         &sdata->csa_chandef))
2998                 return -EINVAL;
2999
3000         sdata->vif.csa_active = false;
3001
3002         err = ieee80211_set_after_csa_beacon(sdata, &changed);
3003         if (err)
3004                 return err;
3005
3006         ieee80211_bss_info_change_notify(sdata, changed);
3007
3008         if (sdata->csa_block_tx) {
3009                 ieee80211_wake_vif_queues(local, sdata,
3010                                           IEEE80211_QUEUE_STOP_REASON_CSA);
3011                 sdata->csa_block_tx = false;
3012         }
3013
3014         err = drv_post_channel_switch(sdata);
3015         if (err)
3016                 return err;
3017
3018         cfg80211_ch_switch_notify(sdata->dev, &sdata->csa_chandef);
3019
3020         return 0;
3021 }
3022
3023 static void ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
3024 {
3025         if (__ieee80211_csa_finalize(sdata)) {
3026                 sdata_info(sdata, "failed to finalize CSA, disconnecting\n");
3027                 cfg80211_stop_iface(sdata->local->hw.wiphy, &sdata->wdev,
3028                                     GFP_KERNEL);
3029         }
3030 }
3031
3032 void ieee80211_csa_finalize_work(struct work_struct *work)
3033 {
3034         struct ieee80211_sub_if_data *sdata =
3035                 container_of(work, struct ieee80211_sub_if_data,
3036                              csa_finalize_work);
3037         struct ieee80211_local *local = sdata->local;
3038
3039         sdata_lock(sdata);
3040         mutex_lock(&local->mtx);
3041         mutex_lock(&local->chanctx_mtx);
3042
3043         /* AP might have been stopped while waiting for the lock. */
3044         if (!sdata->vif.csa_active)
3045                 goto unlock;
3046
3047         if (!ieee80211_sdata_running(sdata))
3048                 goto unlock;
3049
3050         ieee80211_csa_finalize(sdata);
3051
3052 unlock:
3053         mutex_unlock(&local->chanctx_mtx);
3054         mutex_unlock(&local->mtx);
3055         sdata_unlock(sdata);
3056 }
3057
3058 static int ieee80211_set_csa_beacon(struct ieee80211_sub_if_data *sdata,
3059                                     struct cfg80211_csa_settings *params,
3060                                     u32 *changed)
3061 {
3062         struct ieee80211_csa_settings csa = {};
3063         int err;
3064
3065         switch (sdata->vif.type) {
3066         case NL80211_IFTYPE_AP:
3067                 sdata->u.ap.next_beacon =
3068                         cfg80211_beacon_dup(&params->beacon_after);
3069                 if (!sdata->u.ap.next_beacon)
3070                         return -ENOMEM;
3071
3072                 /*
3073                  * With a count of 0, we don't have to wait for any
3074                  * TBTT before switching, so complete the CSA
3075                  * immediately.  In theory, with a count == 1 we
3076                  * should delay the switch until just before the next
3077                  * TBTT, but that would complicate things so we switch
3078                  * immediately too.  If we would delay the switch
3079                  * until the next TBTT, we would have to set the probe
3080                  * response here.
3081                  *
3082                  * TODO: A channel switch with count <= 1 without
3083                  * sending a CSA action frame is kind of useless,
3084                  * because the clients won't know we're changing
3085                  * channels.  The action frame must be implemented
3086                  * either here or in the userspace.
3087                  */
3088                 if (params->count <= 1)
3089                         break;
3090
3091                 if ((params->n_counter_offsets_beacon >
3092                      IEEE80211_MAX_CSA_COUNTERS_NUM) ||
3093                     (params->n_counter_offsets_presp >
3094                      IEEE80211_MAX_CSA_COUNTERS_NUM))
3095                         return -EINVAL;
3096
3097                 csa.counter_offsets_beacon = params->counter_offsets_beacon;
3098                 csa.counter_offsets_presp = params->counter_offsets_presp;
3099                 csa.n_counter_offsets_beacon = params->n_counter_offsets_beacon;
3100                 csa.n_counter_offsets_presp = params->n_counter_offsets_presp;
3101                 csa.count = params->count;
3102
3103                 err = ieee80211_assign_beacon(sdata, &params->beacon_csa, &csa);
3104                 if (err < 0) {
3105                         kfree(sdata->u.ap.next_beacon);
3106                         return err;
3107                 }
3108                 *changed |= err;
3109
3110                 break;
3111         case NL80211_IFTYPE_ADHOC:
3112                 if (!sdata->vif.bss_conf.ibss_joined)
3113                         return -EINVAL;
3114
3115                 if (params->chandef.width != sdata->u.ibss.chandef.width)
3116                         return -EINVAL;
3117
3118                 switch (params->chandef.width) {
3119                 case NL80211_CHAN_WIDTH_40:
3120                         if (cfg80211_get_chandef_type(&params->chandef) !=
3121                             cfg80211_get_chandef_type(&sdata->u.ibss.chandef))
3122                                 return -EINVAL;
3123                 case NL80211_CHAN_WIDTH_5:
3124                 case NL80211_CHAN_WIDTH_10:
3125                 case NL80211_CHAN_WIDTH_20_NOHT:
3126                 case NL80211_CHAN_WIDTH_20:
3127                         break;
3128                 default:
3129                         return -EINVAL;
3130                 }
3131
3132                 /* changes into another band are not supported */
3133                 if (sdata->u.ibss.chandef.chan->band !=
3134                     params->chandef.chan->band)
3135                         return -EINVAL;
3136
3137                 /* see comments in the NL80211_IFTYPE_AP block */
3138                 if (params->count > 1) {
3139                         err = ieee80211_ibss_csa_beacon(sdata, params);
3140                         if (err < 0)
3141                                 return err;
3142                         *changed |= err;
3143                 }
3144
3145                 ieee80211_send_action_csa(sdata, params);
3146
3147                 break;
3148 #ifdef CONFIG_MAC80211_MESH
3149         case NL80211_IFTYPE_MESH_POINT: {
3150                 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
3151
3152                 if (params->chandef.width != sdata->vif.bss_conf.chandef.width)
3153                         return -EINVAL;
3154
3155                 /* changes into another band are not supported */
3156                 if (sdata->vif.bss_conf.chandef.chan->band !=
3157                     params->chandef.chan->band)
3158                         return -EINVAL;
3159
3160                 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_NONE) {
3161                         ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_INIT;
3162                         if (!ifmsh->pre_value)
3163                                 ifmsh->pre_value = 1;
3164                         else
3165                                 ifmsh->pre_value++;
3166                 }
3167
3168                 /* see comments in the NL80211_IFTYPE_AP block */
3169                 if (params->count > 1) {
3170                         err = ieee80211_mesh_csa_beacon(sdata, params);
3171                         if (err < 0) {
3172                                 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_NONE;
3173                                 return err;
3174                         }
3175                         *changed |= err;
3176                 }
3177
3178                 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_INIT)
3179                         ieee80211_send_action_csa(sdata, params);
3180
3181                 break;
3182                 }
3183 #endif
3184         default:
3185                 return -EOPNOTSUPP;
3186         }
3187
3188         return 0;
3189 }
3190
3191 static int
3192 __ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3193                            struct cfg80211_csa_settings *params)
3194 {
3195         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3196         struct ieee80211_local *local = sdata->local;
3197         struct ieee80211_channel_switch ch_switch;
3198         struct ieee80211_chanctx_conf *conf;
3199         struct ieee80211_chanctx *chanctx;
3200         u32 changed = 0;
3201         int err;
3202
3203         sdata_assert_lock(sdata);
3204         lockdep_assert_held(&local->mtx);
3205
3206         if (!list_empty(&local->roc_list) || local->scanning)
3207                 return -EBUSY;
3208
3209         if (sdata->wdev.cac_started)
3210                 return -EBUSY;
3211
3212         if (cfg80211_chandef_identical(&params->chandef,
3213                                        &sdata->vif.bss_conf.chandef))
3214                 return -EINVAL;
3215
3216         /* don't allow another channel switch if one is already active. */
3217         if (sdata->vif.csa_active)
3218                 return -EBUSY;
3219
3220         mutex_lock(&local->chanctx_mtx);
3221         conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
3222                                          lockdep_is_held(&local->chanctx_mtx));
3223         if (!conf) {
3224                 err = -EBUSY;
3225                 goto out;
3226         }
3227
3228         chanctx = container_of(conf, struct ieee80211_chanctx, conf);
3229
3230         ch_switch.timestamp = 0;
3231         ch_switch.device_timestamp = 0;
3232         ch_switch.block_tx = params->block_tx;
3233         ch_switch.chandef = params->chandef;
3234         ch_switch.count = params->count;
3235
3236         err = drv_pre_channel_switch(sdata, &ch_switch);
3237         if (err)
3238                 goto out;
3239
3240         err = ieee80211_vif_reserve_chanctx(sdata, &params->chandef,
3241                                             chanctx->mode,
3242                                             params->radar_required);
3243         if (err)
3244                 goto out;
3245
3246         /* if reservation is invalid then this will fail */
3247         err = ieee80211_check_combinations(sdata, NULL, chanctx->mode, 0);
3248         if (err) {
3249                 ieee80211_vif_unreserve_chanctx(sdata);
3250                 goto out;
3251         }
3252
3253         err = ieee80211_set_csa_beacon(sdata, params, &changed);
3254         if (err) {
3255                 ieee80211_vif_unreserve_chanctx(sdata);
3256                 goto out;
3257         }
3258
3259         sdata->csa_chandef = params->chandef;
3260         sdata->csa_block_tx = params->block_tx;
3261         sdata->vif.csa_active = true;
3262
3263         if (sdata->csa_block_tx)
3264                 ieee80211_stop_vif_queues(local, sdata,
3265                                           IEEE80211_QUEUE_STOP_REASON_CSA);
3266
3267         cfg80211_ch_switch_started_notify(sdata->dev, &sdata->csa_chandef,
3268                                           params->count);
3269
3270         if (changed) {
3271                 ieee80211_bss_info_change_notify(sdata, changed);
3272                 drv_channel_switch_beacon(sdata, &params->chandef);
3273         } else {
3274                 /* if the beacon didn't change, we can finalize immediately */
3275                 ieee80211_csa_finalize(sdata);
3276         }
3277
3278 out:
3279         mutex_unlock(&local->chanctx_mtx);
3280         return err;
3281 }
3282
3283 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3284                              struct cfg80211_csa_settings *params)
3285 {
3286         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3287         struct ieee80211_local *local = sdata->local;
3288         int err;
3289
3290         mutex_lock(&local->mtx);
3291         err = __ieee80211_channel_switch(wiphy, dev, params);
3292         mutex_unlock(&local->mtx);
3293
3294         return err;
3295 }
3296
3297 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local)
3298 {
3299         lockdep_assert_held(&local->mtx);
3300
3301         local->roc_cookie_counter++;
3302
3303         /* wow, you wrapped 64 bits ... more likely a bug */
3304         if (WARN_ON(local->roc_cookie_counter == 0))
3305                 local->roc_cookie_counter++;
3306
3307         return local->roc_cookie_counter;
3308 }
3309
3310 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb,
3311                              u64 *cookie, gfp_t gfp)
3312 {
3313         unsigned long spin_flags;
3314         struct sk_buff *ack_skb;
3315         int id;
3316
3317         ack_skb = skb_copy(skb, gfp);
3318         if (!ack_skb)
3319                 return -ENOMEM;
3320
3321         spin_lock_irqsave(&local->ack_status_lock, spin_flags);
3322         id = idr_alloc(&local->ack_status_frames, ack_skb,
3323                        1, 0x10000, GFP_ATOMIC);
3324         spin_unlock_irqrestore(&local->ack_status_lock, spin_flags);
3325
3326         if (id < 0) {
3327                 kfree_skb(ack_skb);
3328                 return -ENOMEM;
3329         }
3330
3331         IEEE80211_SKB_CB(skb)->ack_frame_id = id;
3332
3333         *cookie = ieee80211_mgmt_tx_cookie(local);
3334         IEEE80211_SKB_CB(ack_skb)->ack.cookie = *cookie;
3335
3336         return 0;
3337 }
3338
3339 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
3340                                           struct wireless_dev *wdev,
3341                                           u16 frame_type, bool reg)
3342 {
3343         struct ieee80211_local *local = wiphy_priv(wiphy);
3344         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3345
3346         switch (frame_type) {
3347         case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ:
3348                 if (reg) {
3349                         local->probe_req_reg++;
3350                         sdata->vif.probe_req_reg++;
3351                 } else {
3352                         if (local->probe_req_reg)
3353                                 local->probe_req_reg--;
3354
3355                         if (sdata->vif.probe_req_reg)
3356                                 sdata->vif.probe_req_reg--;
3357                 }
3358
3359                 if (!local->open_count)
3360                         break;
3361
3362                 if (sdata->vif.probe_req_reg == 1)
3363                         drv_config_iface_filter(local, sdata, FIF_PROBE_REQ,
3364                                                 FIF_PROBE_REQ);
3365                 else if (sdata->vif.probe_req_reg == 0)
3366                         drv_config_iface_filter(local, sdata, 0,
3367                                                 FIF_PROBE_REQ);
3368
3369                 ieee80211_configure_filter(local);
3370                 break;
3371         default:
3372                 break;
3373         }
3374 }
3375
3376 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
3377 {
3378         struct ieee80211_local *local = wiphy_priv(wiphy);
3379
3380         if (local->started)
3381                 return -EOPNOTSUPP;
3382
3383         return drv_set_antenna(local, tx_ant, rx_ant);
3384 }
3385
3386 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
3387 {
3388         struct ieee80211_local *local = wiphy_priv(wiphy);
3389
3390         return drv_get_antenna(local, tx_ant, rx_ant);
3391 }
3392
3393 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
3394                                     struct net_device *dev,
3395                                     struct cfg80211_gtk_rekey_data *data)
3396 {
3397         struct ieee80211_local *local = wiphy_priv(wiphy);
3398         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3399
3400         if (!local->ops->set_rekey_data)
3401                 return -EOPNOTSUPP;
3402
3403         drv_set_rekey_data(local, sdata, data);
3404
3405         return 0;
3406 }
3407
3408 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
3409                                   const u8 *peer, u64 *cookie)
3410 {
3411         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3412         struct ieee80211_local *local = sdata->local;
3413         struct ieee80211_qos_hdr *nullfunc;
3414         struct sk_buff *skb;
3415         int size = sizeof(*nullfunc);
3416         __le16 fc;
3417         bool qos;
3418         struct ieee80211_tx_info *info;
3419         struct sta_info *sta;
3420         struct ieee80211_chanctx_conf *chanctx_conf;
3421         enum nl80211_band band;
3422         int ret;
3423
3424         /* the lock is needed to assign the cookie later */
3425         mutex_lock(&local->mtx);
3426
3427         rcu_read_lock();
3428         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3429         if (WARN_ON(!chanctx_conf)) {
3430                 ret = -EINVAL;
3431                 goto unlock;
3432         }
3433         band = chanctx_conf->def.chan->band;
3434         sta = sta_info_get_bss(sdata, peer);
3435         if (sta) {
3436                 qos = sta->sta.wme;
3437         } else {
3438                 ret = -ENOLINK;
3439                 goto unlock;
3440         }
3441
3442         if (qos) {
3443                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3444                                  IEEE80211_STYPE_QOS_NULLFUNC |
3445                                  IEEE80211_FCTL_FROMDS);
3446         } else {
3447                 size -= 2;
3448                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3449                                  IEEE80211_STYPE_NULLFUNC |
3450                                  IEEE80211_FCTL_FROMDS);
3451         }
3452
3453         skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
3454         if (!skb) {
3455                 ret = -ENOMEM;
3456                 goto unlock;
3457         }
3458
3459         skb->dev = dev;
3460
3461         skb_reserve(skb, local->hw.extra_tx_headroom);
3462
3463         nullfunc = skb_put(skb, size);
3464         nullfunc->frame_control = fc;
3465         nullfunc->duration_id = 0;
3466         memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
3467         memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
3468         memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
3469         nullfunc->seq_ctrl = 0;
3470
3471         info = IEEE80211_SKB_CB(skb);
3472
3473         info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
3474                        IEEE80211_TX_INTFL_NL80211_FRAME_TX;
3475         info->band = band;
3476
3477         skb_set_queue_mapping(skb, IEEE80211_AC_VO);
3478         skb->priority = 7;
3479         if (qos)
3480                 nullfunc->qos_ctrl = cpu_to_le16(7);
3481
3482         ret = ieee80211_attach_ack_skb(local, skb, cookie, GFP_ATOMIC);
3483         if (ret) {
3484                 kfree_skb(skb);
3485                 goto unlock;
3486         }
3487
3488         local_bh_disable();
3489         ieee80211_xmit(sdata, sta, skb);
3490         local_bh_enable();
3491
3492         ret = 0;
3493 unlock:
3494         rcu_read_unlock();
3495         mutex_unlock(&local->mtx);
3496
3497         return ret;
3498 }
3499
3500 static int ieee80211_cfg_get_channel(struct wiphy *wiphy,
3501                                      struct wireless_dev *wdev,
3502                                      struct cfg80211_chan_def *chandef)
3503 {
3504         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3505         struct ieee80211_local *local = wiphy_priv(wiphy);
3506         struct ieee80211_chanctx_conf *chanctx_conf;
3507         int ret = -ENODATA;
3508
3509         rcu_read_lock();
3510         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3511         if (chanctx_conf) {
3512                 *chandef = sdata->vif.bss_conf.chandef;
3513                 ret = 0;
3514         } else if (local->open_count > 0 &&
3515                    local->open_count == local->monitors &&
3516                    sdata->vif.type == NL80211_IFTYPE_MONITOR) {
3517                 if (local->use_chanctx)
3518                         *chandef = local->monitor_chandef;
3519                 else
3520                         *chandef = local->_oper_chandef;
3521                 ret = 0;
3522         }
3523         rcu_read_unlock();
3524
3525         return ret;
3526 }
3527
3528 #ifdef CONFIG_PM
3529 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
3530 {
3531         drv_set_wakeup(wiphy_priv(wiphy), enabled);
3532 }
3533 #endif
3534
3535 static int ieee80211_set_qos_map(struct wiphy *wiphy,
3536                                  struct net_device *dev,
3537                                  struct cfg80211_qos_map *qos_map)
3538 {
3539         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3540         struct mac80211_qos_map *new_qos_map, *old_qos_map;
3541
3542         if (qos_map) {
3543                 new_qos_map = kzalloc(sizeof(*new_qos_map), GFP_KERNEL);
3544                 if (!new_qos_map)
3545                         return -ENOMEM;
3546                 memcpy(&new_qos_map->qos_map, qos_map, sizeof(*qos_map));
3547         } else {
3548                 /* A NULL qos_map was passed to disable QoS mapping */
3549                 new_qos_map = NULL;
3550         }
3551
3552         old_qos_map = sdata_dereference(sdata->qos_map, sdata);
3553         rcu_assign_pointer(sdata->qos_map, new_qos_map);
3554         if (old_qos_map)
3555                 kfree_rcu(old_qos_map, rcu_head);
3556
3557         return 0;
3558 }
3559
3560 static int ieee80211_set_ap_chanwidth(struct wiphy *wiphy,
3561                                       struct net_device *dev,
3562                                       struct cfg80211_chan_def *chandef)
3563 {
3564         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3565         int ret;
3566         u32 changed = 0;
3567
3568         ret = ieee80211_vif_change_bandwidth(sdata, chandef, &changed);
3569         if (ret == 0)
3570                 ieee80211_bss_info_change_notify(sdata, changed);
3571
3572         return ret;
3573 }
3574
3575 static int ieee80211_add_tx_ts(struct wiphy *wiphy, struct net_device *dev,
3576                                u8 tsid, const u8 *peer, u8 up,
3577                                u16 admitted_time)
3578 {
3579         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3580         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3581         int ac = ieee802_1d_to_ac[up];
3582
3583         if (sdata->vif.type != NL80211_IFTYPE_STATION)
3584                 return -EOPNOTSUPP;
3585
3586         if (!(sdata->wmm_acm & BIT(up)))
3587                 return -EINVAL;
3588
3589         if (ifmgd->tx_tspec[ac].admitted_time)
3590                 return -EBUSY;
3591
3592         if (admitted_time) {
3593                 ifmgd->tx_tspec[ac].admitted_time = 32 * admitted_time;
3594                 ifmgd->tx_tspec[ac].tsid = tsid;
3595                 ifmgd->tx_tspec[ac].up = up;
3596         }
3597
3598         return 0;
3599 }
3600
3601 static int ieee80211_del_tx_ts(struct wiphy *wiphy, struct net_device *dev,
3602                                u8 tsid, const u8 *peer)
3603 {
3604         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3605         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3606         struct ieee80211_local *local = wiphy_priv(wiphy);
3607         int ac;
3608
3609         for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
3610                 struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac];
3611
3612                 /* skip unused entries */
3613                 if (!tx_tspec->admitted_time)
3614                         continue;
3615
3616                 if (tx_tspec->tsid != tsid)
3617                         continue;
3618
3619                 /* due to this new packets will be reassigned to non-ACM ACs */
3620                 tx_tspec->up = -1;
3621
3622                 /* Make sure that all packets have been sent to avoid to
3623                  * restore the QoS params on packets that are still on the
3624                  * queues.
3625                  */
3626                 synchronize_net();
3627                 ieee80211_flush_queues(local, sdata, false);
3628
3629                 /* restore the normal QoS parameters
3630                  * (unconditionally to avoid races)
3631                  */
3632                 tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE;
3633                 tx_tspec->downgraded = false;
3634                 ieee80211_sta_handle_tspec_ac_params(sdata);
3635
3636                 /* finally clear all the data */
3637                 memset(tx_tspec, 0, sizeof(*tx_tspec));
3638
3639                 return 0;
3640         }
3641
3642         return -ENOENT;
3643 }
3644
3645 void ieee80211_nan_func_terminated(struct ieee80211_vif *vif,
3646                                    u8 inst_id,
3647                                    enum nl80211_nan_func_term_reason reason,
3648                                    gfp_t gfp)
3649 {
3650         struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
3651         struct cfg80211_nan_func *func;
3652         u64 cookie;
3653
3654         if (WARN_ON(vif->type != NL80211_IFTYPE_NAN))
3655                 return;
3656
3657         spin_lock_bh(&sdata->u.nan.func_lock);
3658
3659         func = idr_find(&sdata->u.nan.function_inst_ids, inst_id);
3660         if (WARN_ON(!func)) {
3661                 spin_unlock_bh(&sdata->u.nan.func_lock);
3662                 return;
3663         }
3664
3665         cookie = func->cookie;
3666         idr_remove(&sdata->u.nan.function_inst_ids, inst_id);
3667
3668         spin_unlock_bh(&sdata->u.nan.func_lock);
3669
3670         cfg80211_free_nan_func(func);
3671
3672         cfg80211_nan_func_terminated(ieee80211_vif_to_wdev(vif), inst_id,
3673                                      reason, cookie, gfp);
3674 }
3675 EXPORT_SYMBOL(ieee80211_nan_func_terminated);
3676
3677 void ieee80211_nan_func_match(struct ieee80211_vif *vif,
3678                               struct cfg80211_nan_match_params *match,
3679                               gfp_t gfp)
3680 {
3681         struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
3682         struct cfg80211_nan_func *func;
3683
3684         if (WARN_ON(vif->type != NL80211_IFTYPE_NAN))
3685                 return;
3686
3687         spin_lock_bh(&sdata->u.nan.func_lock);
3688
3689         func = idr_find(&sdata->u.nan.function_inst_ids,  match->inst_id);
3690         if (WARN_ON(!func)) {
3691                 spin_unlock_bh(&sdata->u.nan.func_lock);
3692                 return;
3693         }
3694         match->cookie = func->cookie;
3695
3696         spin_unlock_bh(&sdata->u.nan.func_lock);
3697
3698         cfg80211_nan_match(ieee80211_vif_to_wdev(vif), match, gfp);
3699 }
3700 EXPORT_SYMBOL(ieee80211_nan_func_match);
3701
3702 static int ieee80211_set_multicast_to_unicast(struct wiphy *wiphy,
3703                                               struct net_device *dev,
3704                                               const bool enabled)
3705 {
3706         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3707
3708         sdata->u.ap.multicast_to_unicast = enabled;
3709
3710         return 0;
3711 }
3712
3713 void ieee80211_fill_txq_stats(struct cfg80211_txq_stats *txqstats,
3714                               struct txq_info *txqi)
3715 {
3716         if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_BACKLOG_BYTES))) {
3717                 txqstats->filled |= BIT(NL80211_TXQ_STATS_BACKLOG_BYTES);
3718                 txqstats->backlog_bytes = txqi->tin.backlog_bytes;
3719         }
3720
3721         if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_BACKLOG_PACKETS))) {
3722                 txqstats->filled |= BIT(NL80211_TXQ_STATS_BACKLOG_PACKETS);
3723                 txqstats->backlog_packets = txqi->tin.backlog_packets;
3724         }
3725
3726         if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_FLOWS))) {
3727                 txqstats->filled |= BIT(NL80211_TXQ_STATS_FLOWS);
3728                 txqstats->flows = txqi->tin.flows;
3729         }
3730
3731         if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_DROPS))) {
3732                 txqstats->filled |= BIT(NL80211_TXQ_STATS_DROPS);
3733                 txqstats->drops = txqi->cstats.drop_count;
3734         }
3735
3736         if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_ECN_MARKS))) {
3737                 txqstats->filled |= BIT(NL80211_TXQ_STATS_ECN_MARKS);
3738                 txqstats->ecn_marks = txqi->cstats.ecn_mark;
3739         }
3740
3741         if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_OVERLIMIT))) {
3742                 txqstats->filled |= BIT(NL80211_TXQ_STATS_OVERLIMIT);
3743                 txqstats->overlimit = txqi->tin.overlimit;
3744         }
3745
3746         if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_COLLISIONS))) {
3747                 txqstats->filled |= BIT(NL80211_TXQ_STATS_COLLISIONS);
3748                 txqstats->collisions = txqi->tin.collisions;
3749         }
3750
3751         if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_TX_BYTES))) {
3752                 txqstats->filled |= BIT(NL80211_TXQ_STATS_TX_BYTES);
3753                 txqstats->tx_bytes = txqi->tin.tx_bytes;
3754         }
3755
3756         if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_TX_PACKETS))) {
3757                 txqstats->filled |= BIT(NL80211_TXQ_STATS_TX_PACKETS);
3758                 txqstats->tx_packets = txqi->tin.tx_packets;
3759         }
3760 }
3761
3762 static int ieee80211_get_txq_stats(struct wiphy *wiphy,
3763                                    struct wireless_dev *wdev,
3764                                    struct cfg80211_txq_stats *txqstats)
3765 {
3766         struct ieee80211_local *local = wiphy_priv(wiphy);
3767         struct ieee80211_sub_if_data *sdata;
3768         int ret = 0;
3769
3770         if (!local->ops->wake_tx_queue)
3771                 return 1;
3772
3773         spin_lock_bh(&local->fq.lock);
3774         rcu_read_lock();
3775
3776         if (wdev) {
3777                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3778                 if (!sdata->vif.txq) {
3779                         ret = 1;
3780                         goto out;
3781                 }
3782                 ieee80211_fill_txq_stats(txqstats, to_txq_info(sdata->vif.txq));
3783         } else {
3784                 /* phy stats */
3785                 txqstats->filled |= BIT(NL80211_TXQ_STATS_BACKLOG_PACKETS) |
3786                                     BIT(NL80211_TXQ_STATS_BACKLOG_BYTES) |
3787                                     BIT(NL80211_TXQ_STATS_OVERLIMIT) |
3788                                     BIT(NL80211_TXQ_STATS_OVERMEMORY) |
3789                                     BIT(NL80211_TXQ_STATS_COLLISIONS) |
3790                                     BIT(NL80211_TXQ_STATS_MAX_FLOWS);
3791                 txqstats->backlog_packets = local->fq.backlog;
3792                 txqstats->backlog_bytes = local->fq.memory_usage;
3793                 txqstats->overlimit = local->fq.overlimit;
3794                 txqstats->overmemory = local->fq.overmemory;
3795                 txqstats->collisions = local->fq.collisions;
3796                 txqstats->max_flows = local->fq.flows_cnt;
3797         }
3798
3799 out:
3800         rcu_read_unlock();
3801         spin_unlock_bh(&local->fq.lock);
3802
3803         return ret;
3804 }
3805
3806 const struct cfg80211_ops mac80211_config_ops = {
3807         .add_virtual_intf = ieee80211_add_iface,
3808         .del_virtual_intf = ieee80211_del_iface,
3809         .change_virtual_intf = ieee80211_change_iface,
3810         .start_p2p_device = ieee80211_start_p2p_device,
3811         .stop_p2p_device = ieee80211_stop_p2p_device,
3812         .add_key = ieee80211_add_key,
3813         .del_key = ieee80211_del_key,
3814         .get_key = ieee80211_get_key,
3815         .set_default_key = ieee80211_config_default_key,
3816         .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
3817         .start_ap = ieee80211_start_ap,
3818         .change_beacon = ieee80211_change_beacon,
3819         .stop_ap = ieee80211_stop_ap,
3820         .add_station = ieee80211_add_station,
3821         .del_station = ieee80211_del_station,
3822         .change_station = ieee80211_change_station,
3823         .get_station = ieee80211_get_station,
3824         .dump_station = ieee80211_dump_station,
3825         .dump_survey = ieee80211_dump_survey,
3826 #ifdef CONFIG_MAC80211_MESH
3827         .add_mpath = ieee80211_add_mpath,
3828         .del_mpath = ieee80211_del_mpath,
3829         .change_mpath = ieee80211_change_mpath,
3830         .get_mpath = ieee80211_get_mpath,
3831         .dump_mpath = ieee80211_dump_mpath,
3832         .get_mpp = ieee80211_get_mpp,
3833         .dump_mpp = ieee80211_dump_mpp,
3834         .update_mesh_config = ieee80211_update_mesh_config,
3835         .get_mesh_config = ieee80211_get_mesh_config,
3836         .join_mesh = ieee80211_join_mesh,
3837         .leave_mesh = ieee80211_leave_mesh,
3838 #endif
3839         .join_ocb = ieee80211_join_ocb,
3840         .leave_ocb = ieee80211_leave_ocb,
3841         .change_bss = ieee80211_change_bss,
3842         .set_txq_params = ieee80211_set_txq_params,
3843         .set_monitor_channel = ieee80211_set_monitor_channel,
3844         .suspend = ieee80211_suspend,
3845         .resume = ieee80211_resume,
3846         .scan = ieee80211_scan,
3847         .abort_scan = ieee80211_abort_scan,
3848         .sched_scan_start = ieee80211_sched_scan_start,
3849         .sched_scan_stop = ieee80211_sched_scan_stop,
3850         .auth = ieee80211_auth,
3851         .assoc = ieee80211_assoc,
3852         .deauth = ieee80211_deauth,
3853         .disassoc = ieee80211_disassoc,
3854         .join_ibss = ieee80211_join_ibss,
3855         .leave_ibss = ieee80211_leave_ibss,
3856         .set_mcast_rate = ieee80211_set_mcast_rate,
3857         .set_wiphy_params = ieee80211_set_wiphy_params,
3858         .set_tx_power = ieee80211_set_tx_power,
3859         .get_tx_power = ieee80211_get_tx_power,
3860         .set_wds_peer = ieee80211_set_wds_peer,
3861         .rfkill_poll = ieee80211_rfkill_poll,
3862         CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
3863         CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
3864         .set_power_mgmt = ieee80211_set_power_mgmt,
3865         .set_bitrate_mask = ieee80211_set_bitrate_mask,
3866         .remain_on_channel = ieee80211_remain_on_channel,
3867         .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
3868         .mgmt_tx = ieee80211_mgmt_tx,
3869         .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
3870         .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
3871         .set_cqm_rssi_range_config = ieee80211_set_cqm_rssi_range_config,
3872         .mgmt_frame_register = ieee80211_mgmt_frame_register,
3873         .set_antenna = ieee80211_set_antenna,
3874         .get_antenna = ieee80211_get_antenna,
3875         .set_rekey_data = ieee80211_set_rekey_data,
3876         .tdls_oper = ieee80211_tdls_oper,
3877         .tdls_mgmt = ieee80211_tdls_mgmt,
3878         .tdls_channel_switch = ieee80211_tdls_channel_switch,
3879         .tdls_cancel_channel_switch = ieee80211_tdls_cancel_channel_switch,
3880         .probe_client = ieee80211_probe_client,
3881         .set_noack_map = ieee80211_set_noack_map,
3882 #ifdef CONFIG_PM
3883         .set_wakeup = ieee80211_set_wakeup,
3884 #endif
3885         .get_channel = ieee80211_cfg_get_channel,
3886         .start_radar_detection = ieee80211_start_radar_detection,
3887         .channel_switch = ieee80211_channel_switch,
3888         .set_qos_map = ieee80211_set_qos_map,
3889         .set_ap_chanwidth = ieee80211_set_ap_chanwidth,
3890         .add_tx_ts = ieee80211_add_tx_ts,
3891         .del_tx_ts = ieee80211_del_tx_ts,
3892         .start_nan = ieee80211_start_nan,
3893         .stop_nan = ieee80211_stop_nan,
3894         .nan_change_conf = ieee80211_nan_change_conf,
3895         .add_nan_func = ieee80211_add_nan_func,
3896         .del_nan_func = ieee80211_del_nan_func,
3897         .set_multicast_to_unicast = ieee80211_set_multicast_to_unicast,
3898         .tx_control_port = ieee80211_tx_control_port,
3899         .get_txq_stats = ieee80211_get_txq_stats,
3900 };