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