net/mac80211/util.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Copyright 2002-2005, Instant802 Networks, Inc.
   4  * Copyright 2005-2006, Devicescape Software, Inc.
   5  * Copyright 2006-2007  Jiri Benc <jbenc@suse.cz>
   6  * Copyright 2007       Johannes Berg <johannes@sipsolutions.net>
   7  * Copyright 2013-2014  Intel Mobile Communications GmbH
   8  * Copyright (C) 2015-2017      Intel Deutschland GmbH
   9  * Copyright (C) 2018-2022 Intel Corporation
  10  *
  11  * utilities for mac80211
  12  */
  13
  14 #include <net/mac80211.h>
  15 #include <linux/netdevice.h>
  16 #include <linux/export.h>
  17 #include <linux/types.h>
  18 #include <linux/slab.h>
  19 #include <linux/skbuff.h>
  20 #include <linux/etherdevice.h>
  21 #include <linux/if_arp.h>
  22 #include <linux/bitmap.h>
  23 #include <linux/crc32.h>
  24 #include <net/net_namespace.h>
  25 #include <net/cfg80211.h>
  26 #include <net/rtnetlink.h>
  27
  28 #include "ieee80211_i.h"
  29 #include "driver-ops.h"
  30 #include "rate.h"
  31 #include "mesh.h"
  32 #include "wme.h"
  33 #include "led.h"
  34 #include "wep.h"
  35
  36 /* privid for wiphys to determine whether they belong to us or not */
  37 const void *const mac80211_wiphy_privid = &mac80211_wiphy_privid;
  38
  39 struct ieee80211_hw *wiphy_to_ieee80211_hw(struct wiphy *wiphy)
  40 {
  41         struct ieee80211_local *local;
  42
  43         local = wiphy_priv(wiphy);
  44         return &local->hw;
  45 }
  46 EXPORT_SYMBOL(wiphy_to_ieee80211_hw);
  47
  48 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
  49                         enum nl80211_iftype type)
  50 {
  51         __le16 fc = hdr->frame_control;
  52
  53         if (ieee80211_is_data(fc)) {
  54                 if (len < 24) /* drop incorrect hdr len (data) */
  55                         return NULL;
  56
  57                 if (ieee80211_has_a4(fc))
  58                         return NULL;
  59                 if (ieee80211_has_tods(fc))
  60                         return hdr->addr1;
  61                 if (ieee80211_has_fromds(fc))
  62                         return hdr->addr2;
  63
  64                 return hdr->addr3;
  65         }
  66
  67         if (ieee80211_is_s1g_beacon(fc)) {
  68                 struct ieee80211_ext *ext = (void *) hdr;
  69
  70                 return ext->u.s1g_beacon.sa;
  71         }
  72
  73         if (ieee80211_is_mgmt(fc)) {
  74                 if (len < 24) /* drop incorrect hdr len (mgmt) */
  75                         return NULL;
  76                 return hdr->addr3;
  77         }
  78
  79         if (ieee80211_is_ctl(fc)) {
  80                 if (ieee80211_is_pspoll(fc))
  81                         return hdr->addr1;
  82
  83                 if (ieee80211_is_back_req(fc)) {
  84                         switch (type) {
  85                         case NL80211_IFTYPE_STATION:
  86                                 return hdr->addr2;
  87                         case NL80211_IFTYPE_AP:
  88                         case NL80211_IFTYPE_AP_VLAN:
  89                                 return hdr->addr1;
  90                         default:
  91                                 break; /* fall through to the return */
  92                         }
  93                 }
  94         }
  95
  96         return NULL;
  97 }
  98 EXPORT_SYMBOL(ieee80211_get_bssid);
  99
 100 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx)
 101 {
 102         struct sk_buff *skb;
 103         struct ieee80211_hdr *hdr;
 104
 105         skb_queue_walk(&tx->skbs, skb) {
 106                 hdr = (struct ieee80211_hdr *) skb->data;
 107                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
 108         }
 109 }
 110
 111 int ieee80211_frame_duration(enum nl80211_band band, size_t len,
 112                              int rate, int erp, int short_preamble,
 113                              int shift)
 114 {
 115         int dur;
 116
 117         /* calculate duration (in microseconds, rounded up to next higher
 118          * integer if it includes a fractional microsecond) to send frame of
 119          * len bytes (does not include FCS) at the given rate. Duration will
 120          * also include SIFS.
 121          *
 122          * rate is in 100 kbps, so divident is multiplied by 10 in the
 123          * DIV_ROUND_UP() operations.
 124          *
 125          * shift may be 2 for 5 MHz channels or 1 for 10 MHz channels, and
 126          * is assumed to be 0 otherwise.
 127          */
 128
 129         if (band == NL80211_BAND_5GHZ || erp) {
 130                 /*
 131                  * OFDM:
 132                  *
 133                  * N_DBPS = DATARATE x 4
 134                  * N_SYM = Ceiling((16+8xLENGTH+6) / N_DBPS)
 135                  *      (16 = SIGNAL time, 6 = tail bits)
 136                  * TXTIME = T_PREAMBLE + T_SIGNAL + T_SYM x N_SYM + Signal Ext
 137                  *
 138                  * T_SYM = 4 usec
 139                  * 802.11a - 18.5.2: aSIFSTime = 16 usec
 140                  * 802.11g - 19.8.4: aSIFSTime = 10 usec +
 141                  *      signal ext = 6 usec
 142                  */
 143                 dur = 16; /* SIFS + signal ext */
 144                 dur += 16; /* IEEE 802.11-2012 18.3.2.4: T_PREAMBLE = 16 usec */
 145                 dur += 4; /* IEEE 802.11-2012 18.3.2.4: T_SIGNAL = 4 usec */
 146
 147                 /* IEEE 802.11-2012 18.3.2.4: all values above are:
 148                  *  * times 4 for 5 MHz
 149                  *  * times 2 for 10 MHz
 150                  */
 151                 dur *= 1 << shift;
 152
 153                 /* rates should already consider the channel bandwidth,
 154                  * don't apply divisor again.
 155                  */
 156                 dur += 4 * DIV_ROUND_UP((16 + 8 * (len + 4) + 6) * 10,
 157                                         4 * rate); /* T_SYM x N_SYM */
 158         } else {
 159                 /*
 160                  * 802.11b or 802.11g with 802.11b compatibility:
 161                  * 18.3.4: TXTIME = PreambleLength + PLCPHeaderTime +
 162                  * Ceiling(((LENGTH+PBCC)x8)/DATARATE). PBCC=0.
 163                  *
 164                  * 802.11 (DS): 15.3.3, 802.11b: 18.3.4
 165                  * aSIFSTime = 10 usec
 166                  * aPreambleLength = 144 usec or 72 usec with short preamble
 167                  * aPLCPHeaderLength = 48 usec or 24 usec with short preamble
 168                  */
 169                 dur = 10; /* aSIFSTime = 10 usec */
 170                 dur += short_preamble ? (72 + 24) : (144 + 48);
 171
 172                 dur += DIV_ROUND_UP(8 * (len + 4) * 10, rate);
 173         }
 174
 175         return dur;
 176 }
 177
 178 /* Exported duration function for driver use */
 179 __le16 ieee80211_generic_frame_duration(struct ieee80211_hw *hw,
 180                                         struct ieee80211_vif *vif,
 181                                         enum nl80211_band band,
 182                                         size_t frame_len,
 183                                         struct ieee80211_rate *rate)
 184 {
 185         struct ieee80211_sub_if_data *sdata;
 186         u16 dur;
 187         int erp, shift = 0;
 188         bool short_preamble = false;
 189
 190         erp = 0;
 191         if (vif) {
 192                 sdata = vif_to_sdata(vif);
 193                 short_preamble = sdata->vif.bss_conf.use_short_preamble;
 194                 if (sdata->deflink.operating_11g_mode)
 195                         erp = rate->flags & IEEE80211_RATE_ERP_G;
 196                 shift = ieee80211_vif_get_shift(vif);
 197         }
 198
 199         dur = ieee80211_frame_duration(band, frame_len, rate->bitrate, erp,
 200                                        short_preamble, shift);
 201
 202         return cpu_to_le16(dur);
 203 }
 204 EXPORT_SYMBOL(ieee80211_generic_frame_duration);
 205
 206 __le16 ieee80211_rts_duration(struct ieee80211_hw *hw,
 207                               struct ieee80211_vif *vif, size_t frame_len,
 208                               const struct ieee80211_tx_info *frame_txctl)
 209 {
 210         struct ieee80211_local *local = hw_to_local(hw);
 211         struct ieee80211_rate *rate;
 212         struct ieee80211_sub_if_data *sdata;
 213         bool short_preamble;
 214         int erp, shift = 0, bitrate;
 215         u16 dur;
 216         struct ieee80211_supported_band *sband;
 217
 218         sband = local->hw.wiphy->bands[frame_txctl->band];
 219
 220         short_preamble = false;
 221
 222         rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx];
 223
 224         erp = 0;
 225         if (vif) {
 226                 sdata = vif_to_sdata(vif);
 227                 short_preamble = sdata->vif.bss_conf.use_short_preamble;
 228                 if (sdata->deflink.operating_11g_mode)
 229                         erp = rate->flags & IEEE80211_RATE_ERP_G;
 230                 shift = ieee80211_vif_get_shift(vif);
 231         }
 232
 233         bitrate = DIV_ROUND_UP(rate->bitrate, 1 << shift);
 234
 235         /* CTS duration */
 236         dur = ieee80211_frame_duration(sband->band, 10, bitrate,
 237                                        erp, short_preamble, shift);
 238         /* Data frame duration */
 239         dur += ieee80211_frame_duration(sband->band, frame_len, bitrate,
 240                                         erp, short_preamble, shift);
 241         /* ACK duration */
 242         dur += ieee80211_frame_duration(sband->band, 10, bitrate,
 243                                         erp, short_preamble, shift);
 244
 245         return cpu_to_le16(dur);
 246 }
 247 EXPORT_SYMBOL(ieee80211_rts_duration);
 248
 249 __le16 ieee80211_ctstoself_duration(struct ieee80211_hw *hw,
 250                                     struct ieee80211_vif *vif,
 251                                     size_t frame_len,
 252                                     const struct ieee80211_tx_info *frame_txctl)
 253 {
 254         struct ieee80211_local *local = hw_to_local(hw);
 255         struct ieee80211_rate *rate;
 256         struct ieee80211_sub_if_data *sdata;
 257         bool short_preamble;
 258         int erp, shift = 0, bitrate;
 259         u16 dur;
 260         struct ieee80211_supported_band *sband;
 261
 262         sband = local->hw.wiphy->bands[frame_txctl->band];
 263
 264         short_preamble = false;
 265
 266         rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx];
 267         erp = 0;
 268         if (vif) {
 269                 sdata = vif_to_sdata(vif);
 270                 short_preamble = sdata->vif.bss_conf.use_short_preamble;
 271                 if (sdata->deflink.operating_11g_mode)
 272                         erp = rate->flags & IEEE80211_RATE_ERP_G;
 273                 shift = ieee80211_vif_get_shift(vif);
 274         }
 275
 276         bitrate = DIV_ROUND_UP(rate->bitrate, 1 << shift);
 277
 278         /* Data frame duration */
 279         dur = ieee80211_frame_duration(sband->band, frame_len, bitrate,
 280                                        erp, short_preamble, shift);
 281         if (!(frame_txctl->flags & IEEE80211_TX_CTL_NO_ACK)) {
 282                 /* ACK duration */
 283                 dur += ieee80211_frame_duration(sband->band, 10, bitrate,
 284                                                 erp, short_preamble, shift);
 285         }
 286
 287         return cpu_to_le16(dur);
 288 }
 289 EXPORT_SYMBOL(ieee80211_ctstoself_duration);
 290
 291 static void __ieee80211_wake_txqs(struct ieee80211_sub_if_data *sdata, int ac)
 292 {
 293         struct ieee80211_local *local = sdata->local;
 294         struct ieee80211_vif *vif = &sdata->vif;
 295         struct fq *fq = &local->fq;
 296         struct ps_data *ps = NULL;
 297         struct txq_info *txqi;
 298         struct sta_info *sta;
 299         int i;
 300
 301         local_bh_disable();
 302         spin_lock(&fq->lock);
 303
 304         sdata->vif.txqs_stopped[ac] = false;
 305
 306         if (!test_bit(SDATA_STATE_RUNNING, &sdata->state))
 307                 goto out;
 308
 309         if (sdata->vif.type == NL80211_IFTYPE_AP)
 310                 ps = &sdata->bss->ps;
 311
 312         list_for_each_entry_rcu(sta, &local->sta_list, list) {
 313                 if (sdata != sta->sdata)
 314                         continue;
 315
 316                 for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) {
 317                         struct ieee80211_txq *txq = sta->sta.txq[i];
 318
 319                         if (!txq)
 320                                 continue;
 321
 322                         txqi = to_txq_info(txq);
 323
 324                         if (ac != txq->ac)
 325                                 continue;
 326
 327                         if (!test_and_clear_bit(IEEE80211_TXQ_STOP_NETIF_TX,
 328                                                 &txqi->flags))
 329                                 continue;
 330
 331                         spin_unlock(&fq->lock);
 332                         drv_wake_tx_queue(local, txqi);
 333                         spin_lock(&fq->lock);
 334                 }
 335         }
 336
 337         if (!vif->txq)
 338                 goto out;
 339
 340         txqi = to_txq_info(vif->txq);
 341
 342         if (!test_and_clear_bit(IEEE80211_TXQ_STOP_NETIF_TX, &txqi->flags) ||
 343             (ps && atomic_read(&ps->num_sta_ps)) || ac != vif->txq->ac)
 344                 goto out;
 345
 346         spin_unlock(&fq->lock);
 347
 348         drv_wake_tx_queue(local, txqi);
 349         local_bh_enable();
 350         return;
 351 out:
 352         spin_unlock(&fq->lock);
 353         local_bh_enable();
 354 }
 355
 356 static void
 357 __releases(&local->queue_stop_reason_lock)
 358 __acquires(&local->queue_stop_reason_lock)
 359 _ieee80211_wake_txqs(struct ieee80211_local *local, unsigned long *flags)
 360 {
 361         struct ieee80211_sub_if_data *sdata;
 362         int n_acs = IEEE80211_NUM_ACS;
 363         int i;
 364
 365         rcu_read_lock();
 366
 367         if (local->hw.queues < IEEE80211_NUM_ACS)
 368                 n_acs = 1;
 369
 370         for (i = 0; i < local->hw.queues; i++) {
 371                 if (local->queue_stop_reasons[i])
 372                         continue;
 373
 374                 spin_unlock_irqrestore(&local->queue_stop_reason_lock, *flags);
 375                 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
 376                         int ac;
 377
 378                         for (ac = 0; ac < n_acs; ac++) {
 379                                 int ac_queue = sdata->vif.hw_queue[ac];
 380
 381                                 if (ac_queue == i ||
 382                                     sdata->vif.cab_queue == i)
 383                                         __ieee80211_wake_txqs(sdata, ac);
 384                         }
 385                 }
 386                 spin_lock_irqsave(&local->queue_stop_reason_lock, *flags);
 387         }
 388
 389         rcu_read_unlock();
 390 }
 391
 392 void ieee80211_wake_txqs(struct tasklet_struct *t)
 393 {
 394         struct ieee80211_local *local = from_tasklet(local, t,
 395                                                      wake_txqs_tasklet);
 396         unsigned long flags;
 397
 398         spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
 399         _ieee80211_wake_txqs(local, &flags);
 400         spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
 401 }
 402
 403 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue)
 404 {
 405         struct ieee80211_sub_if_data *sdata;
 406         int n_acs = IEEE80211_NUM_ACS;
 407
 408         if (local->ops->wake_tx_queue)
 409                 return;
 410
 411         if (local->hw.queues < IEEE80211_NUM_ACS)
 412                 n_acs = 1;
 413
 414         list_for_each_entry_rcu(sdata, &local->interfaces, list) {
 415                 int ac;
 416
 417                 if (!sdata->dev)
 418                         continue;
 419
 420                 if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE &&
 421                     local->queue_stop_reasons[sdata->vif.cab_queue] != 0)
 422                         continue;
 423
 424                 for (ac = 0; ac < n_acs; ac++) {
 425                         int ac_queue = sdata->vif.hw_queue[ac];
 426
 427                         if (ac_queue == queue ||
 428                             (sdata->vif.cab_queue == queue &&
 429                              local->queue_stop_reasons[ac_queue] == 0 &&
 430                              skb_queue_empty(&local->pending[ac_queue])))
 431                                 netif_wake_subqueue(sdata->dev, ac);
 432                 }
 433         }
 434 }
 435
 436 static void __ieee80211_wake_queue(struct ieee80211_hw *hw, int queue,
 437                                    enum queue_stop_reason reason,
 438                                    bool refcounted,
 439                                    unsigned long *flags)
 440 {
 441         struct ieee80211_local *local = hw_to_local(hw);
 442
 443         trace_wake_queue(local, queue, reason);
 444
 445         if (WARN_ON(queue >= hw->queues))
 446                 return;
 447
 448         if (!test_bit(reason, &local->queue_stop_reasons[queue]))
 449                 return;
 450
 451         if (!refcounted) {
 452                 local->q_stop_reasons[queue][reason] = 0;
 453         } else {
 454                 local->q_stop_reasons[queue][reason]--;
 455                 if (WARN_ON(local->q_stop_reasons[queue][reason] < 0))
 456                         local->q_stop_reasons[queue][reason] = 0;
 457         }
 458
 459         if (local->q_stop_reasons[queue][reason] == 0)
 460                 __clear_bit(reason, &local->queue_stop_reasons[queue]);
 461
 462         if (local->queue_stop_reasons[queue] != 0)
 463                 /* someone still has this queue stopped */
 464                 return;
 465
 466         if (skb_queue_empty(&local->pending[queue])) {
 467                 rcu_read_lock();
 468                 ieee80211_propagate_queue_wake(local, queue);
 469                 rcu_read_unlock();
 470         } else
 471                 tasklet_schedule(&local->tx_pending_tasklet);
 472
 473         /*
 474          * Calling _ieee80211_wake_txqs here can be a problem because it may
 475          * release queue_stop_reason_lock which has been taken by
 476          * __ieee80211_wake_queue's caller. It is certainly not very nice to
 477          * release someone's lock, but it is fine because all the callers of
 478          * __ieee80211_wake_queue call it right before releasing the lock.
 479          */
 480         if (local->ops->wake_tx_queue) {
 481                 if (reason == IEEE80211_QUEUE_STOP_REASON_DRIVER)
 482                         tasklet_schedule(&local->wake_txqs_tasklet);
 483                 else
 484                         _ieee80211_wake_txqs(local, flags);
 485         }
 486 }
 487
 488 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
 489                                     enum queue_stop_reason reason,
 490                                     bool refcounted)
 491 {
 492         struct ieee80211_local *local = hw_to_local(hw);
 493         unsigned long flags;
 494
 495         spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
 496         __ieee80211_wake_queue(hw, queue, reason, refcounted, &flags);
 497         spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
 498 }
 499
 500 void ieee80211_wake_queue(struct ieee80211_hw *hw, int queue)
 501 {
 502         ieee80211_wake_queue_by_reason(hw, queue,
 503                                        IEEE80211_QUEUE_STOP_REASON_DRIVER,
 504                                        false);
 505 }
 506 EXPORT_SYMBOL(ieee80211_wake_queue);
 507
 508 static void __ieee80211_stop_queue(struct ieee80211_hw *hw, int queue,
 509                                    enum queue_stop_reason reason,
 510                                    bool refcounted)
 511 {
 512         struct ieee80211_local *local = hw_to_local(hw);
 513         struct ieee80211_sub_if_data *sdata;
 514         int n_acs = IEEE80211_NUM_ACS;
 515
 516         trace_stop_queue(local, queue, reason);
 517
 518         if (WARN_ON(queue >= hw->queues))
 519                 return;
 520
 521         if (!refcounted)
 522                 local->q_stop_reasons[queue][reason] = 1;
 523         else
 524                 local->q_stop_reasons[queue][reason]++;
 525
 526         if (__test_and_set_bit(reason, &local->queue_stop_reasons[queue]))
 527                 return;
 528
 529         if (local->hw.queues < IEEE80211_NUM_ACS)
 530                 n_acs = 1;
 531
 532         rcu_read_lock();
 533         list_for_each_entry_rcu(sdata, &local->interfaces, list) {
 534                 int ac;
 535
 536                 if (!sdata->dev)
 537                         continue;
 538
 539                 for (ac = 0; ac < n_acs; ac++) {
 540                         if (sdata->vif.hw_queue[ac] == queue ||
 541                             sdata->vif.cab_queue == queue) {
 542                                 if (!local->ops->wake_tx_queue) {
 543                                         netif_stop_subqueue(sdata->dev, ac);
 544                                         continue;
 545                                 }
 546                                 spin_lock(&local->fq.lock);
 547                                 sdata->vif.txqs_stopped[ac] = true;
 548                                 spin_unlock(&local->fq.lock);
 549                         }
 550                 }
 551         }
 552         rcu_read_unlock();
 553 }
 554
 555 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
 556                                     enum queue_stop_reason reason,
 557                                     bool refcounted)
 558 {
 559         struct ieee80211_local *local = hw_to_local(hw);
 560         unsigned long flags;
 561
 562         spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
 563         __ieee80211_stop_queue(hw, queue, reason, refcounted);
 564         spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
 565 }
 566
 567 void ieee80211_stop_queue(struct ieee80211_hw *hw, int queue)
 568 {
 569         ieee80211_stop_queue_by_reason(hw, queue,
 570                                        IEEE80211_QUEUE_STOP_REASON_DRIVER,
 571                                        false);
 572 }
 573 EXPORT_SYMBOL(ieee80211_stop_queue);
 574
 575 void ieee80211_add_pending_skb(struct ieee80211_local *local,
 576                                struct sk_buff *skb)
 577 {
 578         struct ieee80211_hw *hw = &local->hw;
 579         unsigned long flags;
 580         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 581         int queue = info->hw_queue;
 582
 583         if (WARN_ON(!info->control.vif)) {
 584                 ieee80211_free_txskb(&local->hw, skb);
 585                 return;
 586         }
 587
 588         spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
 589         __ieee80211_stop_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
 590                                false);
 591         __skb_queue_tail(&local->pending[queue], skb);
 592         __ieee80211_wake_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
 593                                false, &flags);
 594         spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
 595 }
 596
 597 void ieee80211_add_pending_skbs(struct ieee80211_local *local,
 598                                 struct sk_buff_head *skbs)
 599 {
 600         struct ieee80211_hw *hw = &local->hw;
 601         struct sk_buff *skb;
 602         unsigned long flags;
 603         int queue, i;
 604
 605         spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
 606         while ((skb = skb_dequeue(skbs))) {
 607                 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 608
 609                 if (WARN_ON(!info->control.vif)) {
 610                         ieee80211_free_txskb(&local->hw, skb);
 611                         continue;
 612                 }
 613
 614                 queue = info->hw_queue;
 615
 616                 __ieee80211_stop_queue(hw, queue,
 617                                 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
 618                                 false);
 619
 620                 __skb_queue_tail(&local->pending[queue], skb);
 621         }
 622
 623         for (i = 0; i < hw->queues; i++)
 624                 __ieee80211_wake_queue(hw, i,
 625                         IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
 626                         false, &flags);
 627         spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
 628 }
 629
 630 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
 631                                      unsigned long queues,
 632                                      enum queue_stop_reason reason,
 633                                      bool refcounted)
 634 {
 635         struct ieee80211_local *local = hw_to_local(hw);
 636         unsigned long flags;
 637         int i;
 638
 639         spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
 640
 641         for_each_set_bit(i, &queues, hw->queues)
 642                 __ieee80211_stop_queue(hw, i, reason, refcounted);
 643
 644         spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
 645 }
 646
 647 void ieee80211_stop_queues(struct ieee80211_hw *hw)
 648 {
 649         ieee80211_stop_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
 650                                         IEEE80211_QUEUE_STOP_REASON_DRIVER,
 651                                         false);
 652 }
 653 EXPORT_SYMBOL(ieee80211_stop_queues);
 654
 655 int ieee80211_queue_stopped(struct ieee80211_hw *hw, int queue)
 656 {
 657         struct ieee80211_local *local = hw_to_local(hw);
 658         unsigned long flags;
 659         int ret;
 660
 661         if (WARN_ON(queue >= hw->queues))
 662                 return true;
 663
 664         spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
 665         ret = test_bit(IEEE80211_QUEUE_STOP_REASON_DRIVER,
 666                        &local->queue_stop_reasons[queue]);
 667         spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
 668         return ret;
 669 }
 670 EXPORT_SYMBOL(ieee80211_queue_stopped);
 671
 672 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
 673                                      unsigned long queues,
 674                                      enum queue_stop_reason reason,
 675                                      bool refcounted)
 676 {
 677         struct ieee80211_local *local = hw_to_local(hw);
 678         unsigned long flags;
 679         int i;
 680
 681         spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
 682
 683         for_each_set_bit(i, &queues, hw->queues)
 684                 __ieee80211_wake_queue(hw, i, reason, refcounted, &flags);
 685
 686         spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
 687 }
 688
 689 void ieee80211_wake_queues(struct ieee80211_hw *hw)
 690 {
 691         ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
 692                                         IEEE80211_QUEUE_STOP_REASON_DRIVER,
 693                                         false);
 694 }
 695 EXPORT_SYMBOL(ieee80211_wake_queues);
 696
 697 static unsigned int
 698 ieee80211_get_vif_queues(struct ieee80211_local *local,
 699                          struct ieee80211_sub_if_data *sdata)
 700 {
 701         unsigned int queues;
 702
 703         if (sdata && ieee80211_hw_check(&local->hw, QUEUE_CONTROL)) {
 704                 int ac;
 705
 706                 queues = 0;
 707
 708                 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
 709                         queues |= BIT(sdata->vif.hw_queue[ac]);
 710                 if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE)
 711                         queues |= BIT(sdata->vif.cab_queue);
 712         } else {
 713                 /* all queues */
 714                 queues = BIT(local->hw.queues) - 1;
 715         }
 716
 717         return queues;
 718 }
 719
 720 void __ieee80211_flush_queues(struct ieee80211_local *local,
 721                               struct ieee80211_sub_if_data *sdata,
 722                               unsigned int queues, bool drop)
 723 {
 724         if (!local->ops->flush)
 725                 return;
 726
 727         /*
 728          * If no queue was set, or if the HW doesn't support
 729          * IEEE80211_HW_QUEUE_CONTROL - flush all queues
 730          */
 731         if (!queues || !ieee80211_hw_check(&local->hw, QUEUE_CONTROL))
 732                 queues = ieee80211_get_vif_queues(local, sdata);
 733
 734         ieee80211_stop_queues_by_reason(&local->hw, queues,
 735                                         IEEE80211_QUEUE_STOP_REASON_FLUSH,
 736                                         false);
 737
 738         drv_flush(local, sdata, queues, drop);
 739
 740         ieee80211_wake_queues_by_reason(&local->hw, queues,
 741                                         IEEE80211_QUEUE_STOP_REASON_FLUSH,
 742                                         false);
 743 }
 744
 745 void ieee80211_flush_queues(struct ieee80211_local *local,
 746                             struct ieee80211_sub_if_data *sdata, bool drop)
 747 {
 748         __ieee80211_flush_queues(local, sdata, 0, drop);
 749 }
 750
 751 void ieee80211_stop_vif_queues(struct ieee80211_local *local,
 752                                struct ieee80211_sub_if_data *sdata,
 753                                enum queue_stop_reason reason)
 754 {
 755         ieee80211_stop_queues_by_reason(&local->hw,
 756                                         ieee80211_get_vif_queues(local, sdata),
 757                                         reason, true);
 758 }
 759
 760 void ieee80211_wake_vif_queues(struct ieee80211_local *local,
 761                                struct ieee80211_sub_if_data *sdata,
 762                                enum queue_stop_reason reason)
 763 {
 764         ieee80211_wake_queues_by_reason(&local->hw,
 765                                         ieee80211_get_vif_queues(local, sdata),
 766                                         reason, true);
 767 }
 768
 769 static void __iterate_interfaces(struct ieee80211_local *local,
 770                                  u32 iter_flags,
 771                                  void (*iterator)(void *data, u8 *mac,
 772                                                   struct ieee80211_vif *vif),
 773                                  void *data)
 774 {
 775         struct ieee80211_sub_if_data *sdata;
 776         bool active_only = iter_flags & IEEE80211_IFACE_ITER_ACTIVE;
 777
 778         list_for_each_entry_rcu(sdata, &local->interfaces, list) {
 779                 switch (sdata->vif.type) {
 780                 case NL80211_IFTYPE_MONITOR:
 781                         if (!(sdata->u.mntr.flags & MONITOR_FLAG_ACTIVE))
 782                                 continue;
 783                         break;
 784                 case NL80211_IFTYPE_AP_VLAN:
 785                         continue;
 786                 default:
 787                         break;
 788                 }
 789                 if (!(iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL) &&
 790                     active_only && !(sdata->flags & IEEE80211_SDATA_IN_DRIVER))
 791                         continue;
 792                 if ((iter_flags & IEEE80211_IFACE_SKIP_SDATA_NOT_IN_DRIVER) &&
 793                     !(sdata->flags & IEEE80211_SDATA_IN_DRIVER))
 794                         continue;
 795                 if (ieee80211_sdata_running(sdata) || !active_only)
 796                         iterator(data, sdata->vif.addr,
 797                                  &sdata->vif);
 798         }
 799
 800         sdata = rcu_dereference_check(local->monitor_sdata,
 801                                       lockdep_is_held(&local->iflist_mtx) ||
 802                                       lockdep_is_held(&local->hw.wiphy->mtx));
 803         if (sdata &&
 804             (iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL || !active_only ||
 805              sdata->flags & IEEE80211_SDATA_IN_DRIVER))
 806                 iterator(data, sdata->vif.addr, &sdata->vif);
 807 }
 808
 809 void ieee80211_iterate_interfaces(
 810         struct ieee80211_hw *hw, u32 iter_flags,
 811         void (*iterator)(void *data, u8 *mac,
 812                          struct ieee80211_vif *vif),
 813         void *data)
 814 {
 815         struct ieee80211_local *local = hw_to_local(hw);
 816
 817         mutex_lock(&local->iflist_mtx);
 818         __iterate_interfaces(local, iter_flags, iterator, data);
 819         mutex_unlock(&local->iflist_mtx);
 820 }
 821 EXPORT_SYMBOL_GPL(ieee80211_iterate_interfaces);
 822
 823 void ieee80211_iterate_active_interfaces_atomic(
 824         struct ieee80211_hw *hw, u32 iter_flags,
 825         void (*iterator)(void *data, u8 *mac,
 826                          struct ieee80211_vif *vif),
 827         void *data)
 828 {
 829         struct ieee80211_local *local = hw_to_local(hw);
 830
 831         rcu_read_lock();
 832         __iterate_interfaces(local, iter_flags | IEEE80211_IFACE_ITER_ACTIVE,
 833                              iterator, data);
 834         rcu_read_unlock();
 835 }
 836 EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_atomic);
 837
 838 void ieee80211_iterate_active_interfaces_mtx(
 839         struct ieee80211_hw *hw, u32 iter_flags,
 840         void (*iterator)(void *data, u8 *mac,
 841                          struct ieee80211_vif *vif),
 842         void *data)
 843 {
 844         struct ieee80211_local *local = hw_to_local(hw);
 845
 846         lockdep_assert_wiphy(hw->wiphy);
 847
 848         __iterate_interfaces(local, iter_flags | IEEE80211_IFACE_ITER_ACTIVE,
 849                              iterator, data);
 850 }
 851 EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_mtx);
 852
 853 static void __iterate_stations(struct ieee80211_local *local,
 854                                void (*iterator)(void *data,
 855                                                 struct ieee80211_sta *sta),
 856                                void *data)
 857 {
 858         struct sta_info *sta;
 859
 860         list_for_each_entry_rcu(sta, &local->sta_list, list) {
 861                 if (!sta->uploaded)
 862                         continue;
 863
 864                 iterator(data, &sta->sta);
 865         }
 866 }
 867
 868 void ieee80211_iterate_stations(struct ieee80211_hw *hw,
 869                                 void (*iterator)(void *data,
 870                                                  struct ieee80211_sta *sta),
 871                                 void *data)
 872 {
 873         struct ieee80211_local *local = hw_to_local(hw);
 874
 875         mutex_lock(&local->sta_mtx);
 876         __iterate_stations(local, iterator, data);
 877         mutex_unlock(&local->sta_mtx);
 878 }
 879 EXPORT_SYMBOL_GPL(ieee80211_iterate_stations);
 880
 881 void ieee80211_iterate_stations_atomic(struct ieee80211_hw *hw,
 882                         void (*iterator)(void *data,
 883                                          struct ieee80211_sta *sta),
 884                         void *data)
 885 {
 886         struct ieee80211_local *local = hw_to_local(hw);
 887
 888         rcu_read_lock();
 889         __iterate_stations(local, iterator, data);
 890         rcu_read_unlock();
 891 }
 892 EXPORT_SYMBOL_GPL(ieee80211_iterate_stations_atomic);
 893
 894 struct ieee80211_vif *wdev_to_ieee80211_vif(struct wireless_dev *wdev)
 895 {
 896         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 897
 898         if (!ieee80211_sdata_running(sdata) ||
 899             !(sdata->flags & IEEE80211_SDATA_IN_DRIVER))
 900                 return NULL;
 901         return &sdata->vif;
 902 }
 903 EXPORT_SYMBOL_GPL(wdev_to_ieee80211_vif);
 904
 905 struct wireless_dev *ieee80211_vif_to_wdev(struct ieee80211_vif *vif)
 906 {
 907         if (!vif)
 908                 return NULL;
 909
 910         return &vif_to_sdata(vif)->wdev;
 911 }
 912 EXPORT_SYMBOL_GPL(ieee80211_vif_to_wdev);
 913
 914 /*
 915  * Nothing should have been stuffed into the workqueue during
 916  * the suspend->resume cycle. Since we can't check each caller
 917  * of this function if we are already quiescing / suspended,
 918  * check here and don't WARN since this can actually happen when
 919  * the rx path (for example) is racing against __ieee80211_suspend
 920  * and suspending / quiescing was set after the rx path checked
 921  * them.
 922  */
 923 static bool ieee80211_can_queue_work(struct ieee80211_local *local)
 924 {
 925         if (local->quiescing || (local->suspended && !local->resuming)) {
 926                 pr_warn("queueing ieee80211 work while going to suspend\n");
 927                 return false;
 928         }
 929
 930         return true;
 931 }
 932
 933 void ieee80211_queue_work(struct ieee80211_hw *hw, struct work_struct *work)
 934 {
 935         struct ieee80211_local *local = hw_to_local(hw);
 936
 937         if (!ieee80211_can_queue_work(local))
 938                 return;
 939
 940         queue_work(local->workqueue, work);
 941 }
 942 EXPORT_SYMBOL(ieee80211_queue_work);
 943
 944 void ieee80211_queue_delayed_work(struct ieee80211_hw *hw,
 945                                   struct delayed_work *dwork,
 946                                   unsigned long delay)
 947 {
 948         struct ieee80211_local *local = hw_to_local(hw);
 949
 950         if (!ieee80211_can_queue_work(local))
 951                 return;
 952
 953         queue_delayed_work(local->workqueue, dwork, delay);
 954 }
 955 EXPORT_SYMBOL(ieee80211_queue_delayed_work);
 956
 957 static void
 958 ieee80211_parse_extension_element(u32 *crc,
 959                                   const struct element *elem,
 960                                   struct ieee802_11_elems *elems,
 961                                   struct ieee80211_elems_parse_params *params)
 962 {
 963         const void *data = elem->data + 1;
 964         u8 len;
 965
 966         if (!elem->datalen)
 967                 return;
 968
 969         len = elem->datalen - 1;
 970
 971         switch (elem->data[0]) {
 972         case WLAN_EID_EXT_HE_MU_EDCA:
 973                 if (len >= sizeof(*elems->mu_edca_param_set)) {
 974                         elems->mu_edca_param_set = data;
 975                         if (crc)
 976                                 *crc = crc32_be(*crc, (void *)elem,
 977                                                 elem->datalen + 2);
 978                 }
 979                 break;
 980         case WLAN_EID_EXT_HE_CAPABILITY:
 981                 if (ieee80211_he_capa_size_ok(data, len)) {
 982                         elems->he_cap = data;
 983                         elems->he_cap_len = len;
 984                 }
 985                 break;
 986         case WLAN_EID_EXT_HE_OPERATION:
 987                 if (len >= sizeof(*elems->he_operation) &&
 988                     len >= ieee80211_he_oper_size(data) - 1) {
 989                         if (crc)
 990                                 *crc = crc32_be(*crc, (void *)elem,
 991                                                 elem->datalen + 2);
 992                         elems->he_operation = data;
 993                 }
 994                 break;
 995         case WLAN_EID_EXT_UORA:
 996                 if (len >= 1)
 997                         elems->uora_element = data;
 998                 break;
 999         case WLAN_EID_EXT_MAX_CHANNEL_SWITCH_TIME:
1000                 if (len == 3)
1001                         elems->max_channel_switch_time = data;
1002                 break;
1003         case WLAN_EID_EXT_MULTIPLE_BSSID_CONFIGURATION:
1004                 if (len >= sizeof(*elems->mbssid_config_ie))
1005                         elems->mbssid_config_ie = data;
1006                 break;
1007         case WLAN_EID_EXT_HE_SPR:
1008                 if (len >= sizeof(*elems->he_spr) &&
1009                     len >= ieee80211_he_spr_size(data))
1010                         elems->he_spr = data;
1011                 break;
1012         case WLAN_EID_EXT_HE_6GHZ_CAPA:
1013                 if (len >= sizeof(*elems->he_6ghz_capa))
1014                         elems->he_6ghz_capa = data;
1015                 break;
1016         case WLAN_EID_EXT_EHT_CAPABILITY:
1017                 if (ieee80211_eht_capa_size_ok(elems->he_cap,
1018                                                data, len,
1019                                                params->from_ap)) {
1020                         elems->eht_cap = data;
1021                         elems->eht_cap_len = len;
1022                 }
1023                 break;
1024         case WLAN_EID_EXT_EHT_OPERATION:
1025                 if (ieee80211_eht_oper_size_ok(data, len))
1026                         elems->eht_operation = data;
1027                 break;
1028         case WLAN_EID_EXT_EHT_MULTI_LINK:
1029                 if (ieee80211_mle_size_ok(data, len))
1030                         elems->multi_link = (void *)data;
1031                 break;
1032         }
1033 }
1034
1035 static u32
1036 _ieee802_11_parse_elems_full(struct ieee80211_elems_parse_params *params,
1037                              struct ieee802_11_elems *elems,
1038                              const struct element *check_inherit)
1039 {
1040         const struct element *elem;
1041         bool calc_crc = params->filter != 0;
1042         DECLARE_BITMAP(seen_elems, 256);
1043         u32 crc = params->crc;
1044         const u8 *ie;
1045
1046         bitmap_zero(seen_elems, 256);
1047
1048         for_each_element(elem, params->start, params->len) {
1049                 bool elem_parse_failed;
1050                 u8 id = elem->id;
1051                 u8 elen = elem->datalen;
1052                 const u8 *pos = elem->data;
1053
1054                 if (check_inherit &&
1055                     !cfg80211_is_element_inherited(elem,
1056                                                    check_inherit))
1057                         continue;
1058
1059                 switch (id) {
1060                 case WLAN_EID_SSID:
1061                 case WLAN_EID_SUPP_RATES:
1062                 case WLAN_EID_FH_PARAMS:
1063                 case WLAN_EID_DS_PARAMS:
1064                 case WLAN_EID_CF_PARAMS:
1065                 case WLAN_EID_TIM:
1066                 case WLAN_EID_IBSS_PARAMS:
1067                 case WLAN_EID_CHALLENGE:
1068                 case WLAN_EID_RSN:
1069                 case WLAN_EID_ERP_INFO:
1070                 case WLAN_EID_EXT_SUPP_RATES:
1071                 case WLAN_EID_HT_CAPABILITY:
1072                 case WLAN_EID_HT_OPERATION:
1073                 case WLAN_EID_VHT_CAPABILITY:
1074                 case WLAN_EID_VHT_OPERATION:
1075                 case WLAN_EID_MESH_ID:
1076                 case WLAN_EID_MESH_CONFIG:
1077                 case WLAN_EID_PEER_MGMT:
1078                 case WLAN_EID_PREQ:
1079                 case WLAN_EID_PREP:
1080                 case WLAN_EID_PERR:
1081                 case WLAN_EID_RANN:
1082                 case WLAN_EID_CHANNEL_SWITCH:
1083                 case WLAN_EID_EXT_CHANSWITCH_ANN:
1084                 case WLAN_EID_COUNTRY:
1085                 case WLAN_EID_PWR_CONSTRAINT:
1086                 case WLAN_EID_TIMEOUT_INTERVAL:
1087                 case WLAN_EID_SECONDARY_CHANNEL_OFFSET:
1088                 case WLAN_EID_WIDE_BW_CHANNEL_SWITCH:
1089                 case WLAN_EID_CHAN_SWITCH_PARAM:
1090                 case WLAN_EID_EXT_CAPABILITY:
1091                 case WLAN_EID_CHAN_SWITCH_TIMING:
1092                 case WLAN_EID_LINK_ID:
1093                 case WLAN_EID_BSS_MAX_IDLE_PERIOD:
1094                 case WLAN_EID_RSNX:
1095                 case WLAN_EID_S1G_BCN_COMPAT:
1096                 case WLAN_EID_S1G_CAPABILITIES:
1097                 case WLAN_EID_S1G_OPERATION:
1098                 case WLAN_EID_AID_RESPONSE:
1099                 case WLAN_EID_S1G_SHORT_BCN_INTERVAL:
1100                 /*
1101                  * not listing WLAN_EID_CHANNEL_SWITCH_WRAPPER -- it seems possible
1102                  * that if the content gets bigger it might be needed more than once
1103                  */
1104                         if (test_bit(id, seen_elems)) {
1105                                 elems->parse_error = true;
1106                                 continue;
1107                         }
1108                         break;
1109                 }
1110
1111                 if (calc_crc && id < 64 && (params->filter & (1ULL << id)))
1112                         crc = crc32_be(crc, pos - 2, elen + 2);
1113
1114                 elem_parse_failed = false;
1115
1116                 switch (id) {
1117                 case WLAN_EID_LINK_ID:
1118                         if (elen + 2 < sizeof(struct ieee80211_tdls_lnkie)) {
1119                                 elem_parse_failed = true;
1120                                 break;
1121                         }
1122                         elems->lnk_id = (void *)(pos - 2);
1123                         break;
1124                 case WLAN_EID_CHAN_SWITCH_TIMING:
1125                         if (elen < sizeof(struct ieee80211_ch_switch_timing)) {
1126                                 elem_parse_failed = true;
1127                                 break;
1128                         }
1129                         elems->ch_sw_timing = (void *)pos;
1130                         break;
1131                 case WLAN_EID_EXT_CAPABILITY:
1132                         elems->ext_capab = pos;
1133                         elems->ext_capab_len = elen;
1134                         break;
1135                 case WLAN_EID_SSID:
1136                         elems->ssid = pos;
1137                         elems->ssid_len = elen;
1138                         break;
1139                 case WLAN_EID_SUPP_RATES:
1140                         elems->supp_rates = pos;
1141                         elems->supp_rates_len = elen;
1142                         break;
1143                 case WLAN_EID_DS_PARAMS:
1144                         if (elen >= 1)
1145                                 elems->ds_params = pos;
1146                         else
1147                                 elem_parse_failed = true;
1148                         break;
1149                 case WLAN_EID_TIM:
1150                         if (elen >= sizeof(struct ieee80211_tim_ie)) {
1151                                 elems->tim = (void *)pos;
1152                                 elems->tim_len = elen;
1153                         } else
1154                                 elem_parse_failed = true;
1155                         break;
1156                 case WLAN_EID_VENDOR_SPECIFIC:
1157                         if (elen >= 4 && pos[0] == 0x00 && pos[1] == 0x50 &&
1158                             pos[2] == 0xf2) {
1159                                 /* Microsoft OUI (00:50:F2) */
1160
1161                                 if (calc_crc)
1162                                         crc = crc32_be(crc, pos - 2, elen + 2);
1163
1164                                 if (elen >= 5 && pos[3] == 2) {
1165                                         /* OUI Type 2 - WMM IE */
1166                                         if (pos[4] == 0) {
1167                                                 elems->wmm_info = pos;
1168                                                 elems->wmm_info_len = elen;
1169                                         } else if (pos[4] == 1) {
1170                                                 elems->wmm_param = pos;
1171                                                 elems->wmm_param_len = elen;
1172                                         }
1173                                 }
1174                         }
1175                         break;
1176                 case WLAN_EID_RSN:
1177                         elems->rsn = pos;
1178                         elems->rsn_len = elen;
1179                         break;
1180                 case WLAN_EID_ERP_INFO:
1181                         if (elen >= 1)
1182                                 elems->erp_info = pos;
1183                         else
1184                                 elem_parse_failed = true;
1185                         break;
1186                 case WLAN_EID_EXT_SUPP_RATES:
1187                         elems->ext_supp_rates = pos;
1188                         elems->ext_supp_rates_len = elen;
1189                         break;
1190                 case WLAN_EID_HT_CAPABILITY:
1191                         if (elen >= sizeof(struct ieee80211_ht_cap))
1192                                 elems->ht_cap_elem = (void *)pos;
1193                         else
1194                                 elem_parse_failed = true;
1195                         break;
1196                 case WLAN_EID_HT_OPERATION:
1197                         if (elen >= sizeof(struct ieee80211_ht_operation))
1198                                 elems->ht_operation = (void *)pos;
1199                         else
1200                                 elem_parse_failed = true;
1201                         break;
1202                 case WLAN_EID_VHT_CAPABILITY:
1203                         if (elen >= sizeof(struct ieee80211_vht_cap))
1204                                 elems->vht_cap_elem = (void *)pos;
1205                         else
1206                                 elem_parse_failed = true;
1207                         break;
1208                 case WLAN_EID_VHT_OPERATION:
1209                         if (elen >= sizeof(struct ieee80211_vht_operation)) {
1210                                 elems->vht_operation = (void *)pos;
1211                                 if (calc_crc)
1212                                         crc = crc32_be(crc, pos - 2, elen + 2);
1213                                 break;
1214                         }
1215                         elem_parse_failed = true;
1216                         break;
1217                 case WLAN_EID_OPMODE_NOTIF:
1218                         if (elen > 0) {
1219                                 elems->opmode_notif = pos;
1220                                 if (calc_crc)
1221                                         crc = crc32_be(crc, pos - 2, elen + 2);
1222                                 break;
1223                         }
1224                         elem_parse_failed = true;
1225                         break;
1226                 case WLAN_EID_MESH_ID:
1227                         elems->mesh_id = pos;
1228                         elems->mesh_id_len = elen;
1229                         break;
1230                 case WLAN_EID_MESH_CONFIG:
1231                         if (elen >= sizeof(struct ieee80211_meshconf_ie))
1232                                 elems->mesh_config = (void *)pos;
1233                         else
1234                                 elem_parse_failed = true;
1235                         break;
1236                 case WLAN_EID_PEER_MGMT:
1237                         elems->peering = pos;
1238                         elems->peering_len = elen;
1239                         break;
1240                 case WLAN_EID_MESH_AWAKE_WINDOW:
1241                         if (elen >= 2)
1242                                 elems->awake_window = (void *)pos;
1243                         break;
1244                 case WLAN_EID_PREQ:
1245                         elems->preq = pos;
1246                         elems->preq_len = elen;
1247                         break;
1248                 case WLAN_EID_PREP:
1249                         elems->prep = pos;
1250                         elems->prep_len = elen;
1251                         break;
1252                 case WLAN_EID_PERR:
1253                         elems->perr = pos;
1254                         elems->perr_len = elen;
1255                         break;
1256                 case WLAN_EID_RANN:
1257                         if (elen >= sizeof(struct ieee80211_rann_ie))
1258                                 elems->rann = (void *)pos;
1259                         else
1260                                 elem_parse_failed = true;
1261                         break;
1262                 case WLAN_EID_CHANNEL_SWITCH:
1263                         if (elen != sizeof(struct ieee80211_channel_sw_ie)) {
1264                                 elem_parse_failed = true;
1265                                 break;
1266                         }
1267                         elems->ch_switch_ie = (void *)pos;
1268                         break;
1269                 case WLAN_EID_EXT_CHANSWITCH_ANN:
1270                         if (elen != sizeof(struct ieee80211_ext_chansw_ie)) {
1271                                 elem_parse_failed = true;
1272                                 break;
1273                         }
1274                         elems->ext_chansw_ie = (void *)pos;
1275                         break;
1276                 case WLAN_EID_SECONDARY_CHANNEL_OFFSET:
1277                         if (elen != sizeof(struct ieee80211_sec_chan_offs_ie)) {
1278                                 elem_parse_failed = true;
1279                                 break;
1280                         }
1281                         elems->sec_chan_offs = (void *)pos;
1282                         break;
1283                 case WLAN_EID_CHAN_SWITCH_PARAM:
1284                         if (elen <
1285                             sizeof(*elems->mesh_chansw_params_ie)) {
1286                                 elem_parse_failed = true;
1287                                 break;
1288                         }
1289                         elems->mesh_chansw_params_ie = (void *)pos;
1290                         break;
1291                 case WLAN_EID_WIDE_BW_CHANNEL_SWITCH:
1292                         if (!params->action ||
1293                             elen < sizeof(*elems->wide_bw_chansw_ie)) {
1294                                 elem_parse_failed = true;
1295                                 break;
1296                         }
1297                         elems->wide_bw_chansw_ie = (void *)pos;
1298                         break;
1299                 case WLAN_EID_CHANNEL_SWITCH_WRAPPER:
1300                         if (params->action) {
1301                                 elem_parse_failed = true;
1302                                 break;
1303                         }
1304                         /*
1305                          * This is a bit tricky, but as we only care about
1306                          * the wide bandwidth channel switch element, so
1307                          * just parse it out manually.
1308                          */
1309                         ie = cfg80211_find_ie(WLAN_EID_WIDE_BW_CHANNEL_SWITCH,
1310                                               pos, elen);
1311                         if (ie) {
1312                                 if (ie[1] >= sizeof(*elems->wide_bw_chansw_ie))
1313                                         elems->wide_bw_chansw_ie =
1314                                                 (void *)(ie + 2);
1315                                 else
1316                                         elem_parse_failed = true;
1317                         }
1318                         break;
1319                 case WLAN_EID_COUNTRY:
1320                         elems->country_elem = pos;
1321                         elems->country_elem_len = elen;
1322                         break;
1323                 case WLAN_EID_PWR_CONSTRAINT:
1324                         if (elen != 1) {
1325                                 elem_parse_failed = true;
1326                                 break;
1327                         }
1328                         elems->pwr_constr_elem = pos;
1329                         break;
1330                 case WLAN_EID_CISCO_VENDOR_SPECIFIC:
1331                         /* Lots of different options exist, but we only care
1332                          * about the Dynamic Transmit Power Control element.
1333                          * First check for the Cisco OUI, then for the DTPC
1334                          * tag (0x00).
1335                          */
1336                         if (elen < 4) {
1337                                 elem_parse_failed = true;
1338                                 break;
1339                         }
1340
1341                         if (pos[0] != 0x00 || pos[1] != 0x40 ||
1342                             pos[2] != 0x96 || pos[3] != 0x00)
1343                                 break;
1344
1345                         if (elen != 6) {
1346                                 elem_parse_failed = true;
1347                                 break;
1348                         }
1349
1350                         if (calc_crc)
1351                                 crc = crc32_be(crc, pos - 2, elen + 2);
1352
1353                         elems->cisco_dtpc_elem = pos;
1354                         break;
1355                 case WLAN_EID_ADDBA_EXT:
1356                         if (elen < sizeof(struct ieee80211_addba_ext_ie)) {
1357                                 elem_parse_failed = true;
1358                                 break;
1359                         }
1360                         elems->addba_ext_ie = (void *)pos;
1361                         break;
1362                 case WLAN_EID_TIMEOUT_INTERVAL:
1363                         if (elen >= sizeof(struct ieee80211_timeout_interval_ie))
1364                                 elems->timeout_int = (void *)pos;
1365                         else
1366                                 elem_parse_failed = true;
1367                         break;
1368                 case WLAN_EID_BSS_MAX_IDLE_PERIOD:
1369                         if (elen >= sizeof(*elems->max_idle_period_ie))
1370                                 elems->max_idle_period_ie = (void *)pos;
1371                         break;
1372                 case WLAN_EID_RSNX:
1373                         elems->rsnx = pos;
1374                         elems->rsnx_len = elen;
1375                         break;
1376                 case WLAN_EID_TX_POWER_ENVELOPE:
1377                         if (elen < 1 ||
1378                             elen > sizeof(struct ieee80211_tx_pwr_env))
1379                                 break;
1380
1381                         if (elems->tx_pwr_env_num >= ARRAY_SIZE(elems->tx_pwr_env))
1382                                 break;
1383
1384                         elems->tx_pwr_env[elems->tx_pwr_env_num] = (void *)pos;
1385                         elems->tx_pwr_env_len[elems->tx_pwr_env_num] = elen;
1386                         elems->tx_pwr_env_num++;
1387                         break;
1388                 case WLAN_EID_EXTENSION:
1389                         ieee80211_parse_extension_element(calc_crc ?
1390                                                                 &crc : NULL,
1391                                                           elem, elems, params);
1392                         break;
1393                 case WLAN_EID_S1G_CAPABILITIES:
1394                         if (elen >= sizeof(*elems->s1g_capab))
1395                                 elems->s1g_capab = (void *)pos;
1396                         else
1397                                 elem_parse_failed = true;
1398                         break;
1399                 case WLAN_EID_S1G_OPERATION:
1400                         if (elen == sizeof(*elems->s1g_oper))
1401                                 elems->s1g_oper = (void *)pos;
1402                         else
1403                                 elem_parse_failed = true;
1404                         break;
1405                 case WLAN_EID_S1G_BCN_COMPAT:
1406                         if (elen == sizeof(*elems->s1g_bcn_compat))
1407                                 elems->s1g_bcn_compat = (void *)pos;
1408                         else
1409                                 elem_parse_failed = true;
1410                         break;
1411                 case WLAN_EID_AID_RESPONSE:
1412                         if (elen == sizeof(struct ieee80211_aid_response_ie))
1413                                 elems->aid_resp = (void *)pos;
1414                         else
1415                                 elem_parse_failed = true;
1416                         break;
1417                 default:
1418                         break;
1419                 }
1420
1421                 if (elem_parse_failed)
1422                         elems->parse_error = true;
1423                 else
1424                         __set_bit(id, seen_elems);
1425         }
1426
1427         if (!for_each_element_completed(elem, params->start, params->len))
1428                 elems->parse_error = true;
1429
1430         return crc;
1431 }
1432
1433 static size_t ieee802_11_find_bssid_profile(const u8 *start, size_t len,
1434                                             struct ieee802_11_elems *elems,
1435                                             struct cfg80211_bss *bss,
1436                                             u8 *nontransmitted_profile)
1437 {
1438         const struct element *elem, *sub;
1439         size_t profile_len = 0;
1440         bool found = false;
1441
1442         if (!bss || !bss->transmitted_bss)
1443                 return profile_len;
1444
1445         for_each_element_id(elem, WLAN_EID_MULTIPLE_BSSID, start, len) {
1446                 if (elem->datalen < 2)
1447                         continue;
1448                 if (elem->data[0] < 1 || elem->data[0] > 8)
1449                         continue;
1450
1451                 for_each_element(sub, elem->data + 1, elem->datalen - 1) {
1452                         u8 new_bssid[ETH_ALEN];
1453                         const u8 *index;
1454
1455                         if (sub->id != 0 || sub->datalen < 4) {
1456                                 /* not a valid BSS profile */
1457                                 continue;
1458                         }
1459
1460                         if (sub->data[0] != WLAN_EID_NON_TX_BSSID_CAP ||
1461                             sub->data[1] != 2) {
1462                                 /* The first element of the
1463                                  * Nontransmitted BSSID Profile is not
1464                                  * the Nontransmitted BSSID Capability
1465                                  * element.
1466                                  */
1467                                 continue;
1468                         }
1469
1470                         memset(nontransmitted_profile, 0, len);
1471                         profile_len = cfg80211_merge_profile(start, len,
1472                                                              elem,
1473                                                              sub,
1474                                                              nontransmitted_profile,
1475                                                              len);
1476
1477                         /* found a Nontransmitted BSSID Profile */
1478                         index = cfg80211_find_ie(WLAN_EID_MULTI_BSSID_IDX,
1479                                                  nontransmitted_profile,
1480                                                  profile_len);
1481                         if (!index || index[1] < 1 || index[2] == 0) {
1482                                 /* Invalid MBSSID Index element */
1483                                 continue;
1484                         }
1485
1486                         cfg80211_gen_new_bssid(bss->transmitted_bss->bssid,
1487                                                elem->data[0],
1488                                                index[2],
1489                                                new_bssid);
1490                         if (ether_addr_equal(new_bssid, bss->bssid)) {
1491                                 found = true;
1492                                 elems->bssid_index_len = index[1];
1493                                 elems->bssid_index = (void *)&index[2];
1494                                 break;
1495                         }
1496                 }
1497         }
1498
1499         return found ? profile_len : 0;
1500 }
1501
1502 struct ieee802_11_elems *
1503 ieee802_11_parse_elems_full(struct ieee80211_elems_parse_params *params)
1504 {
1505         struct ieee802_11_elems *elems;
1506         const struct element *non_inherit = NULL;
1507         u8 *nontransmitted_profile;
1508         int nontransmitted_profile_len = 0;
1509         size_t scratch_len = params->len;
1510
1511         elems = kzalloc(sizeof(*elems) + scratch_len, GFP_ATOMIC);
1512         if (!elems)
1513                 return NULL;
1514         elems->ie_start = params->start;
1515         elems->total_len = params->len;
1516         elems->scratch_len = scratch_len;
1517         elems->scratch_pos = elems->scratch;
1518
1519         nontransmitted_profile = elems->scratch_pos;
1520         nontransmitted_profile_len =
1521                 ieee802_11_find_bssid_profile(params->start, params->len,
1522                                               elems, params->bss,
1523                                               nontransmitted_profile);
1524         elems->scratch_pos += nontransmitted_profile_len;
1525         elems->scratch_len -= nontransmitted_profile_len;
1526         non_inherit = cfg80211_find_ext_elem(WLAN_EID_EXT_NON_INHERITANCE,
1527                                              nontransmitted_profile,
1528                                              nontransmitted_profile_len);
1529
1530         elems->crc = _ieee802_11_parse_elems_full(params, elems, non_inherit);
1531
1532         /* Override with nontransmitted profile, if found */
1533         if (nontransmitted_profile_len) {
1534                 struct ieee80211_elems_parse_params sub = {
1535                         .start = nontransmitted_profile,
1536                         .len = nontransmitted_profile_len,
1537                         .action = params->action,
1538                         .link_id = params->link_id,
1539                 };
1540
1541                 _ieee802_11_parse_elems_full(&sub, elems, NULL);
1542         }
1543
1544         if (elems->tim && !elems->parse_error) {
1545                 const struct ieee80211_tim_ie *tim_ie = elems->tim;
1546
1547                 elems->dtim_period = tim_ie->dtim_period;
1548                 elems->dtim_count = tim_ie->dtim_count;
1549         }
1550
1551         /* Override DTIM period and count if needed */
1552         if (elems->bssid_index &&
1553             elems->bssid_index_len >=
1554             offsetofend(struct ieee80211_bssid_index, dtim_period))
1555                 elems->dtim_period = elems->bssid_index->dtim_period;
1556
1557         if (elems->bssid_index &&
1558             elems->bssid_index_len >=
1559             offsetofend(struct ieee80211_bssid_index, dtim_count))
1560                 elems->dtim_count = elems->bssid_index->dtim_count;
1561
1562         return elems;
1563 }
1564
1565 void ieee80211_regulatory_limit_wmm_params(struct ieee80211_sub_if_data *sdata,
1566                                            struct ieee80211_tx_queue_params
1567                                            *qparam, int ac)
1568 {
1569         struct ieee80211_chanctx_conf *chanctx_conf;
1570         const struct ieee80211_reg_rule *rrule;
1571         const struct ieee80211_wmm_ac *wmm_ac;
1572         u16 center_freq = 0;
1573
1574         if (sdata->vif.type != NL80211_IFTYPE_AP &&
1575             sdata->vif.type != NL80211_IFTYPE_STATION)
1576                 return;
1577
1578         rcu_read_lock();
1579         chanctx_conf = rcu_dereference(sdata->vif.bss_conf.chanctx_conf);
1580         if (chanctx_conf)
1581                 center_freq = chanctx_conf->def.chan->center_freq;
1582
1583         if (!center_freq) {
1584                 rcu_read_unlock();
1585                 return;
1586         }
1587
1588         rrule = freq_reg_info(sdata->wdev.wiphy, MHZ_TO_KHZ(center_freq));
1589
1590         if (IS_ERR_OR_NULL(rrule) || !rrule->has_wmm) {
1591                 rcu_read_unlock();
1592                 return;
1593         }
1594
1595         if (sdata->vif.type == NL80211_IFTYPE_AP)
1596                 wmm_ac = &rrule->wmm_rule.ap[ac];
1597         else
1598                 wmm_ac = &rrule->wmm_rule.client[ac];
1599         qparam->cw_min = max_t(u16, qparam->cw_min, wmm_ac->cw_min);
1600         qparam->cw_max = max_t(u16, qparam->cw_max, wmm_ac->cw_max);
1601         qparam->aifs = max_t(u8, qparam->aifs, wmm_ac->aifsn);
1602         qparam->txop = min_t(u16, qparam->txop, wmm_ac->cot / 32);
1603         rcu_read_unlock();
1604 }
1605
1606 void ieee80211_set_wmm_default(struct ieee80211_link_data *link,
1607                                bool bss_notify, bool enable_qos)
1608 {
1609         struct ieee80211_sub_if_data *sdata = link->sdata;
1610         struct ieee80211_local *local = sdata->local;
1611         struct ieee80211_tx_queue_params qparam;
1612         struct ieee80211_chanctx_conf *chanctx_conf;
1613         int ac;
1614         bool use_11b;
1615         bool is_ocb; /* Use another EDCA parameters if dot11OCBActivated=true */
1616         int aCWmin, aCWmax;
1617
1618         if (!local->ops->conf_tx)
1619                 return;
1620
1621         if (local->hw.queues < IEEE80211_NUM_ACS)
1622                 return;
1623
1624         memset(&qparam, 0, sizeof(qparam));
1625
1626         rcu_read_lock();
1627         chanctx_conf = rcu_dereference(link->conf->chanctx_conf);
1628         use_11b = (chanctx_conf &&
1629                    chanctx_conf->def.chan->band == NL80211_BAND_2GHZ) &&
1630                  !link->operating_11g_mode;
1631         rcu_read_unlock();
1632
1633         is_ocb = (sdata->vif.type == NL80211_IFTYPE_OCB);
1634
1635         /* Set defaults according to 802.11-2007 Table 7-37 */
1636         aCWmax = 1023;
1637         if (use_11b)
1638                 aCWmin = 31;
1639         else
1640                 aCWmin = 15;
1641
1642         /* Confiure old 802.11b/g medium access rules. */
1643         qparam.cw_max = aCWmax;
1644         qparam.cw_min = aCWmin;
1645         qparam.txop = 0;
1646         qparam.aifs = 2;
1647
1648         for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
1649                 /* Update if QoS is enabled. */
1650                 if (enable_qos) {
1651                         switch (ac) {
1652                         case IEEE80211_AC_BK:
1653                                 qparam.cw_max = aCWmax;
1654                                 qparam.cw_min = aCWmin;
1655                                 qparam.txop = 0;
1656                                 if (is_ocb)
1657                                         qparam.aifs = 9;
1658                                 else
1659                                         qparam.aifs = 7;
1660                                 break;
1661                         /* never happens but let's not leave undefined */
1662                         default:
1663                         case IEEE80211_AC_BE:
1664                                 qparam.cw_max = aCWmax;
1665                                 qparam.cw_min = aCWmin;
1666                                 qparam.txop = 0;
1667                                 if (is_ocb)
1668                                         qparam.aifs = 6;
1669                                 else
1670                                         qparam.aifs = 3;
1671                                 break;
1672                         case IEEE80211_AC_VI:
1673                                 qparam.cw_max = aCWmin;
1674                                 qparam.cw_min = (aCWmin + 1) / 2 - 1;
1675                                 if (is_ocb)
1676                                         qparam.txop = 0;
1677                                 else if (use_11b)
1678                                         qparam.txop = 6016/32;
1679                                 else
1680                                         qparam.txop = 3008/32;
1681
1682                                 if (is_ocb)
1683                                         qparam.aifs = 3;
1684                                 else
1685                                         qparam.aifs = 2;
1686                                 break;
1687                         case IEEE80211_AC_VO:
1688                                 qparam.cw_max = (aCWmin + 1) / 2 - 1;
1689                                 qparam.cw_min = (aCWmin + 1) / 4 - 1;
1690                                 if (is_ocb)
1691                                         qparam.txop = 0;
1692                                 else if (use_11b)
1693                                         qparam.txop = 3264/32;
1694                                 else
1695                                         qparam.txop = 1504/32;
1696                                 qparam.aifs = 2;
1697                                 break;
1698                         }
1699                 }
1700                 ieee80211_regulatory_limit_wmm_params(sdata, &qparam, ac);
1701
1702                 qparam.uapsd = false;
1703
1704                 link->tx_conf[ac] = qparam;
1705                 drv_conf_tx(local, link, ac, &qparam);
1706         }
1707
1708         if (sdata->vif.type != NL80211_IFTYPE_MONITOR &&
1709             sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE &&
1710             sdata->vif.type != NL80211_IFTYPE_NAN) {
1711                 link->conf->qos = enable_qos;
1712                 if (bss_notify)
1713                         ieee80211_link_info_change_notify(sdata, link,
1714                                                           BSS_CHANGED_QOS);
1715         }
1716 }
1717
1718 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
1719                          u16 transaction, u16 auth_alg, u16 status,
1720                          const u8 *extra, size_t extra_len, const u8 *da,
1721                          const u8 *bssid, const u8 *key, u8 key_len, u8 key_idx,
1722                          u32 tx_flags)
1723 {
1724         struct ieee80211_local *local = sdata->local;
1725         struct sk_buff *skb;
1726         struct ieee80211_mgmt *mgmt;
1727         bool multi_link = sdata->vif.valid_links;
1728         struct {
1729                 u8 id;
1730                 u8 len;
1731                 u8 ext_id;
1732                 struct ieee80211_multi_link_elem ml;
1733                 struct ieee80211_mle_basic_common_info basic;
1734         } __packed mle = {
1735                 .id = WLAN_EID_EXTENSION,
1736                 .len = sizeof(mle) - 2,
1737                 .ext_id = WLAN_EID_EXT_EHT_MULTI_LINK,
1738                 .ml.control = cpu_to_le16(IEEE80211_ML_CONTROL_TYPE_BASIC),
1739                 .basic.len = sizeof(mle.basic),
1740         };
1741         int err;
1742
1743         memcpy(mle.basic.mld_mac_addr, sdata->vif.addr, ETH_ALEN);
1744
1745         /* 24 + 6 = header + auth_algo + auth_transaction + status_code */
1746         skb = dev_alloc_skb(local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN +
1747                             24 + 6 + extra_len + IEEE80211_WEP_ICV_LEN +
1748                             multi_link * sizeof(mle));
1749         if (!skb)
1750                 return;
1751
1752         skb_reserve(skb, local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN);
1753
1754         mgmt = skb_put_zero(skb, 24 + 6);
1755         mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
1756                                           IEEE80211_STYPE_AUTH);
1757         memcpy(mgmt->da, da, ETH_ALEN);
1758         memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
1759         memcpy(mgmt->bssid, bssid, ETH_ALEN);
1760         mgmt->u.auth.auth_alg = cpu_to_le16(auth_alg);
1761         mgmt->u.auth.auth_transaction = cpu_to_le16(transaction);
1762         mgmt->u.auth.status_code = cpu_to_le16(status);
1763         if (extra)
1764                 skb_put_data(skb, extra, extra_len);
1765         if (multi_link)
1766                 skb_put_data(skb, &mle, sizeof(mle));
1767
1768         if (auth_alg == WLAN_AUTH_SHARED_KEY && transaction == 3) {
1769                 mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
1770                 err = ieee80211_wep_encrypt(local, skb, key, key_len, key_idx);
1771                 if (WARN_ON(err)) {
1772                         kfree_skb(skb);
1773                         return;
1774                 }
1775         }
1776
1777         IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT |
1778                                         tx_flags;
1779         ieee80211_tx_skb(sdata, skb);
1780 }
1781
1782 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
1783                                     const u8 *da, const u8 *bssid,
1784                                     u16 stype, u16 reason,
1785                                     bool send_frame, u8 *frame_buf)
1786 {
1787         struct ieee80211_local *local = sdata->local;
1788         struct sk_buff *skb;
1789         struct ieee80211_mgmt *mgmt = (void *)frame_buf;
1790
1791         /* build frame */
1792         mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | stype);
1793         mgmt->duration = 0; /* initialize only */
1794         mgmt->seq_ctrl = 0; /* initialize only */
1795         memcpy(mgmt->da, da, ETH_ALEN);
1796         memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
1797         memcpy(mgmt->bssid, bssid, ETH_ALEN);
1798         /* u.deauth.reason_code == u.disassoc.reason_code */
1799         mgmt->u.deauth.reason_code = cpu_to_le16(reason);
1800
1801         if (send_frame) {
1802                 skb = dev_alloc_skb(local->hw.extra_tx_headroom +
1803                                     IEEE80211_DEAUTH_FRAME_LEN);
1804                 if (!skb)
1805                         return;
1806
1807                 skb_reserve(skb, local->hw.extra_tx_headroom);
1808
1809                 /* copy in frame */
1810                 skb_put_data(skb, mgmt, IEEE80211_DEAUTH_FRAME_LEN);
1811
1812                 if (sdata->vif.type != NL80211_IFTYPE_STATION ||
1813                     !(sdata->u.mgd.flags & IEEE80211_STA_MFP_ENABLED))
1814                         IEEE80211_SKB_CB(skb)->flags |=
1815                                 IEEE80211_TX_INTFL_DONT_ENCRYPT;
1816
1817                 ieee80211_tx_skb(sdata, skb);
1818         }
1819 }
1820
1821 static u8 *ieee80211_write_he_6ghz_cap(u8 *pos, __le16 cap, u8 *end)
1822 {
1823         if ((end - pos) < 5)
1824                 return pos;
1825
1826         *pos++ = WLAN_EID_EXTENSION;
1827         *pos++ = 1 + sizeof(cap);
1828         *pos++ = WLAN_EID_EXT_HE_6GHZ_CAPA;
1829         memcpy(pos, &cap, sizeof(cap));
1830
1831         return pos + 2;
1832 }
1833
1834 static int ieee80211_build_preq_ies_band(struct ieee80211_sub_if_data *sdata,
1835                                          u8 *buffer, size_t buffer_len,
1836                                          const u8 *ie, size_t ie_len,
1837                                          enum nl80211_band band,
1838                                          u32 rate_mask,
1839                                          struct cfg80211_chan_def *chandef,
1840                                          size_t *offset, u32 flags)
1841 {
1842         struct ieee80211_local *local = sdata->local;
1843         struct ieee80211_supported_band *sband;
1844         const struct ieee80211_sta_he_cap *he_cap;
1845         const struct ieee80211_sta_eht_cap *eht_cap;
1846         u8 *pos = buffer, *end = buffer + buffer_len;
1847         size_t noffset;
1848         int supp_rates_len, i;
1849         u8 rates[32];
1850         int num_rates;
1851         int ext_rates_len;
1852         int shift;
1853         u32 rate_flags;
1854         bool have_80mhz = false;
1855
1856         *offset = 0;
1857
1858         sband = local->hw.wiphy->bands[band];
1859         if (WARN_ON_ONCE(!sband))
1860                 return 0;
1861
1862         rate_flags = ieee80211_chandef_rate_flags(chandef);
1863         shift = ieee80211_chandef_get_shift(chandef);
1864
1865         num_rates = 0;
1866         for (i = 0; i < sband->n_bitrates; i++) {
1867                 if ((BIT(i) & rate_mask) == 0)
1868                         continue; /* skip rate */
1869                 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
1870                         continue;
1871
1872                 rates[num_rates++] =
1873                         (u8) DIV_ROUND_UP(sband->bitrates[i].bitrate,
1874                                           (1 << shift) * 5);
1875         }
1876
1877         supp_rates_len = min_t(int, num_rates, 8);
1878
1879         if (end - pos < 2 + supp_rates_len)
1880                 goto out_err;
1881         *pos++ = WLAN_EID_SUPP_RATES;
1882         *pos++ = supp_rates_len;
1883         memcpy(pos, rates, supp_rates_len);
1884         pos += supp_rates_len;
1885
1886         /* insert "request information" if in custom IEs */
1887         if (ie && ie_len) {
1888                 static const u8 before_extrates[] = {
1889                         WLAN_EID_SSID,
1890                         WLAN_EID_SUPP_RATES,
1891                         WLAN_EID_REQUEST,
1892                 };
1893                 noffset = ieee80211_ie_split(ie, ie_len,
1894                                              before_extrates,
1895                                              ARRAY_SIZE(before_extrates),
1896                                              *offset);
1897                 if (end - pos < noffset - *offset)
1898                         goto out_err;
1899                 memcpy(pos, ie + *offset, noffset - *offset);
1900                 pos += noffset - *offset;
1901                 *offset = noffset;
1902         }
1903
1904         ext_rates_len = num_rates - supp_rates_len;
1905         if (ext_rates_len > 0) {
1906                 if (end - pos < 2 + ext_rates_len)
1907                         goto out_err;
1908                 *pos++ = WLAN_EID_EXT_SUPP_RATES;
1909                 *pos++ = ext_rates_len;
1910                 memcpy(pos, rates + supp_rates_len, ext_rates_len);
1911                 pos += ext_rates_len;
1912         }
1913
1914         if (chandef->chan && sband->band == NL80211_BAND_2GHZ) {
1915                 if (end - pos < 3)
1916                         goto out_err;
1917                 *pos++ = WLAN_EID_DS_PARAMS;
1918                 *pos++ = 1;
1919                 *pos++ = ieee80211_frequency_to_channel(
1920                                 chandef->chan->center_freq);
1921         }
1922
1923         if (flags & IEEE80211_PROBE_FLAG_MIN_CONTENT)
1924                 goto done;
1925
1926         /* insert custom IEs that go before HT */
1927         if (ie && ie_len) {
1928                 static const u8 before_ht[] = {
1929                         /*
1930                          * no need to list the ones split off already
1931                          * (or generated here)
1932                          */
1933                         WLAN_EID_DS_PARAMS,
1934                         WLAN_EID_SUPPORTED_REGULATORY_CLASSES,
1935                 };
1936                 noffset = ieee80211_ie_split(ie, ie_len,
1937                                              before_ht, ARRAY_SIZE(before_ht),
1938                                              *offset);
1939                 if (end - pos < noffset - *offset)
1940                         goto out_err;
1941                 memcpy(pos, ie + *offset, noffset - *offset);
1942                 pos += noffset - *offset;
1943                 *offset = noffset;
1944         }
1945
1946         if (sband->ht_cap.ht_supported) {
1947                 if (end - pos < 2 + sizeof(struct ieee80211_ht_cap))
1948                         goto out_err;
1949                 pos = ieee80211_ie_build_ht_cap(pos, &sband->ht_cap,
1950                                                 sband->ht_cap.cap);
1951         }
1952
1953         /* insert custom IEs that go before VHT */
1954         if (ie && ie_len) {
1955                 static const u8 before_vht[] = {
1956                         /*
1957                          * no need to list the ones split off already
1958                          * (or generated here)
1959                          */
1960                         WLAN_EID_BSS_COEX_2040,
1961                         WLAN_EID_EXT_CAPABILITY,
1962                         WLAN_EID_SSID_LIST,
1963                         WLAN_EID_CHANNEL_USAGE,
1964                         WLAN_EID_INTERWORKING,
1965                         WLAN_EID_MESH_ID,
1966                         /* 60 GHz (Multi-band, DMG, MMS) can't happen */
1967                 };
1968                 noffset = ieee80211_ie_split(ie, ie_len,
1969                                              before_vht, ARRAY_SIZE(before_vht),
1970                                              *offset);
1971                 if (end - pos < noffset - *offset)
1972                         goto out_err;
1973                 memcpy(pos, ie + *offset, noffset - *offset);
1974                 pos += noffset - *offset;
1975                 *offset = noffset;
1976         }
1977
1978         /* Check if any channel in this sband supports at least 80 MHz */
1979         for (i = 0; i < sband->n_channels; i++) {
1980                 if (sband->channels[i].flags & (IEEE80211_CHAN_DISABLED |
1981                                                 IEEE80211_CHAN_NO_80MHZ))
1982                         continue;
1983
1984                 have_80mhz = true;
1985                 break;
1986         }
1987
1988         if (sband->vht_cap.vht_supported && have_80mhz) {
1989                 if (end - pos < 2 + sizeof(struct ieee80211_vht_cap))
1990                         goto out_err;
1991                 pos = ieee80211_ie_build_vht_cap(pos, &sband->vht_cap,
1992                                                  sband->vht_cap.cap);
1993         }
1994
1995         /* insert custom IEs that go before HE */
1996         if (ie && ie_len) {
1997                 static const u8 before_he[] = {
1998                         /*
1999                          * no need to list the ones split off before VHT
2000                          * or generated here
2001                          */
2002                         WLAN_EID_EXTENSION, WLAN_EID_EXT_FILS_REQ_PARAMS,
2003                         WLAN_EID_AP_CSN,
2004                         /* TODO: add 11ah/11aj/11ak elements */
2005                 };
2006                 noffset = ieee80211_ie_split(ie, ie_len,
2007                                              before_he, ARRAY_SIZE(before_he),
2008                                              *offset);
2009                 if (end - pos < noffset - *offset)
2010                         goto out_err;
2011                 memcpy(pos, ie + *offset, noffset - *offset);
2012                 pos += noffset - *offset;
2013                 *offset = noffset;
2014         }
2015
2016         he_cap = ieee80211_get_he_iftype_cap(sband,
2017                                              ieee80211_vif_type_p2p(&sdata->vif));
2018         if (he_cap &&
2019             cfg80211_any_usable_channels(local->hw.wiphy, BIT(sband->band),
2020                                          IEEE80211_CHAN_NO_HE)) {
2021                 pos = ieee80211_ie_build_he_cap(0, pos, he_cap, end);
2022                 if (!pos)
2023                         goto out_err;
2024         }
2025
2026         eht_cap = ieee80211_get_eht_iftype_cap(sband,
2027                                                ieee80211_vif_type_p2p(&sdata->vif));
2028
2029         if (eht_cap &&
2030             cfg80211_any_usable_channels(local->hw.wiphy, BIT(sband->band),
2031                                          IEEE80211_CHAN_NO_HE |
2032                                          IEEE80211_CHAN_NO_EHT)) {
2033                 pos = ieee80211_ie_build_eht_cap(pos, he_cap, eht_cap, end,
2034                                                  sdata->vif.type == NL80211_IFTYPE_AP);
2035                 if (!pos)
2036                         goto out_err;
2037         }
2038
2039         if (cfg80211_any_usable_channels(local->hw.wiphy,
2040                                          BIT(NL80211_BAND_6GHZ),
2041                                          IEEE80211_CHAN_NO_HE)) {
2042                 struct ieee80211_supported_band *sband6;
2043
2044                 sband6 = local->hw.wiphy->bands[NL80211_BAND_6GHZ];
2045                 he_cap = ieee80211_get_he_iftype_cap(sband6,
2046                                 ieee80211_vif_type_p2p(&sdata->vif));
2047
2048                 if (he_cap) {
2049                         enum nl80211_iftype iftype =
2050                                 ieee80211_vif_type_p2p(&sdata->vif);
2051                         __le16 cap = ieee80211_get_he_6ghz_capa(sband6, iftype);
2052
2053                         pos = ieee80211_write_he_6ghz_cap(pos, cap, end);
2054                 }
2055         }
2056
2057         /*
2058          * If adding more here, adjust code in main.c
2059          * that calculates local->scan_ies_len.
2060          */
2061
2062         return pos - buffer;
2063  out_err:
2064         WARN_ONCE(1, "not enough space for preq IEs\n");
2065  done:
2066         return pos - buffer;
2067 }
2068
2069 int ieee80211_build_preq_ies(struct ieee80211_sub_if_data *sdata, u8 *buffer,
2070                              size_t buffer_len,
2071                              struct ieee80211_scan_ies *ie_desc,
2072                              const u8 *ie, size_t ie_len,
2073                              u8 bands_used, u32 *rate_masks,
2074                              struct cfg80211_chan_def *chandef,
2075                              u32 flags)
2076 {
2077         size_t pos = 0, old_pos = 0, custom_ie_offset = 0;
2078         int i;
2079
2080         memset(ie_desc, 0, sizeof(*ie_desc));
2081
2082         for (i = 0; i < NUM_NL80211_BANDS; i++) {
2083                 if (bands_used & BIT(i)) {
2084                         pos += ieee80211_build_preq_ies_band(sdata,
2085                                                              buffer + pos,
2086                                                              buffer_len - pos,
2087                                                              ie, ie_len, i,
2088                                                              rate_masks[i],
2089                                                              chandef,
2090                                                              &custom_ie_offset,
2091                                                              flags);
2092                         ie_desc->ies[i] = buffer + old_pos;
2093                         ie_desc->len[i] = pos - old_pos;
2094                         old_pos = pos;
2095                 }
2096         }
2097
2098         /* add any remaining custom IEs */
2099         if (ie && ie_len) {
2100                 if (WARN_ONCE(buffer_len - pos < ie_len - custom_ie_offset,
2101                               "not enough space for preq custom IEs\n"))
2102                         return pos;
2103                 memcpy(buffer + pos, ie + custom_ie_offset,
2104                        ie_len - custom_ie_offset);
2105                 ie_desc->common_ies = buffer + pos;
2106                 ie_desc->common_ie_len = ie_len - custom_ie_offset;
2107                 pos += ie_len - custom_ie_offset;
2108         }
2109
2110         return pos;
2111 };
2112
2113 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
2114                                           const u8 *src, const u8 *dst,
2115                                           u32 ratemask,
2116                                           struct ieee80211_channel *chan,
2117                                           const u8 *ssid, size_t ssid_len,
2118                                           const u8 *ie, size_t ie_len,
2119                                           u32 flags)
2120 {
2121         struct ieee80211_local *local = sdata->local;
2122         struct cfg80211_chan_def chandef;
2123         struct sk_buff *skb;
2124         struct ieee80211_mgmt *mgmt;
2125         int ies_len;
2126         u32 rate_masks[NUM_NL80211_BANDS] = {};
2127         struct ieee80211_scan_ies dummy_ie_desc;
2128
2129         /*
2130          * Do not send DS Channel parameter for directed probe requests
2131          * in order to maximize the chance that we get a response.  Some
2132          * badly-behaved APs don't respond when this parameter is included.
2133          */
2134         chandef.width = sdata->vif.bss_conf.chandef.width;
2135         if (flags & IEEE80211_PROBE_FLAG_DIRECTED)
2136                 chandef.chan = NULL;
2137         else
2138                 chandef.chan = chan;
2139
2140         skb = ieee80211_probereq_get(&local->hw, src, ssid, ssid_len,
2141                                      local->scan_ies_len + ie_len);
2142         if (!skb)
2143                 return NULL;
2144
2145         rate_masks[chan->band] = ratemask;
2146         ies_len = ieee80211_build_preq_ies(sdata, skb_tail_pointer(skb),
2147                                            skb_tailroom(skb), &dummy_ie_desc,
2148                                            ie, ie_len, BIT(chan->band),
2149                                            rate_masks, &chandef, flags);
2150         skb_put(skb, ies_len);
2151
2152         if (dst) {
2153                 mgmt = (struct ieee80211_mgmt *) skb->data;
2154                 memcpy(mgmt->da, dst, ETH_ALEN);
2155                 memcpy(mgmt->bssid, dst, ETH_ALEN);
2156         }
2157
2158         IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
2159
2160         return skb;
2161 }
2162
2163 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
2164                             struct ieee802_11_elems *elems,
2165                             enum nl80211_band band, u32 *basic_rates)
2166 {
2167         struct ieee80211_supported_band *sband;
2168         size_t num_rates;
2169         u32 supp_rates, rate_flags;
2170         int i, j, shift;
2171
2172         sband = sdata->local->hw.wiphy->bands[band];
2173         if (WARN_ON(!sband))
2174                 return 1;
2175
2176         rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef);
2177         shift = ieee80211_vif_get_shift(&sdata->vif);
2178
2179         num_rates = sband->n_bitrates;
2180         supp_rates = 0;
2181         for (i = 0; i < elems->supp_rates_len +
2182                      elems->ext_supp_rates_len; i++) {
2183                 u8 rate = 0;
2184                 int own_rate;
2185                 bool is_basic;
2186                 if (i < elems->supp_rates_len)
2187                         rate = elems->supp_rates[i];
2188                 else if (elems->ext_supp_rates)
2189                         rate = elems->ext_supp_rates
2190                                 [i - elems->supp_rates_len];
2191                 own_rate = 5 * (rate & 0x7f);
2192                 is_basic = !!(rate & 0x80);
2193
2194                 if (is_basic && (rate & 0x7f) == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
2195                         continue;
2196
2197                 for (j = 0; j < num_rates; j++) {
2198                         int brate;
2199                         if ((rate_flags & sband->bitrates[j].flags)
2200                             != rate_flags)
2201                                 continue;
2202
2203                         brate = DIV_ROUND_UP(sband->bitrates[j].bitrate,
2204                                              1 << shift);
2205
2206                         if (brate == own_rate) {
2207                                 supp_rates |= BIT(j);
2208                                 if (basic_rates && is_basic)
2209                                         *basic_rates |= BIT(j);
2210                         }
2211                 }
2212         }
2213         return supp_rates;
2214 }
2215
2216 void ieee80211_stop_device(struct ieee80211_local *local)
2217 {
2218         ieee80211_led_radio(local, false);
2219         ieee80211_mod_tpt_led_trig(local, 0, IEEE80211_TPT_LEDTRIG_FL_RADIO);
2220
2221         cancel_work_sync(&local->reconfig_filter);
2222
2223         flush_workqueue(local->workqueue);
2224         drv_stop(local);
2225 }
2226
2227 static void ieee80211_flush_completed_scan(struct ieee80211_local *local,
2228                                            bool aborted)
2229 {
2230         /* It's possible that we don't handle the scan completion in
2231          * time during suspend, so if it's still marked as completed
2232          * here, queue the work and flush it to clean things up.
2233          * Instead of calling the worker function directly here, we
2234          * really queue it to avoid potential races with other flows
2235          * scheduling the same work.
2236          */
2237         if (test_bit(SCAN_COMPLETED, &local->scanning)) {
2238                 /* If coming from reconfiguration failure, abort the scan so
2239                  * we don't attempt to continue a partial HW scan - which is
2240                  * possible otherwise if (e.g.) the 2.4 GHz portion was the
2241                  * completed scan, and a 5 GHz portion is still pending.
2242                  */
2243                 if (aborted)
2244                         set_bit(SCAN_ABORTED, &local->scanning);
2245                 ieee80211_queue_delayed_work(&local->hw, &local->scan_work, 0);
2246                 flush_delayed_work(&local->scan_work);
2247         }
2248 }
2249
2250 static void ieee80211_handle_reconfig_failure(struct ieee80211_local *local)
2251 {
2252         struct ieee80211_sub_if_data *sdata;
2253         struct ieee80211_chanctx *ctx;
2254
2255         /*
2256          * We get here if during resume the device can't be restarted properly.
2257          * We might also get here if this happens during HW reset, which is a
2258          * slightly different situation and we need to drop all connections in
2259          * the latter case.
2260          *
2261          * Ask cfg80211 to turn off all interfaces, this will result in more
2262          * warnings but at least we'll then get into a clean stopped state.
2263          */
2264
2265         local->resuming = false;
2266         local->suspended = false;
2267         local->in_reconfig = false;
2268
2269         ieee80211_flush_completed_scan(local, true);
2270
2271         /* scheduled scan clearly can't be running any more, but tell
2272          * cfg80211 and clear local state
2273          */
2274         ieee80211_sched_scan_end(local);
2275
2276         list_for_each_entry(sdata, &local->interfaces, list)
2277                 sdata->flags &= ~IEEE80211_SDATA_IN_DRIVER;
2278
2279         /* Mark channel contexts as not being in the driver any more to avoid
2280          * removing them from the driver during the shutdown process...
2281          */
2282         mutex_lock(&local->chanctx_mtx);
2283         list_for_each_entry(ctx, &local->chanctx_list, list)
2284                 ctx->driver_present = false;
2285         mutex_unlock(&local->chanctx_mtx);
2286 }
2287
2288 static void ieee80211_assign_chanctx(struct ieee80211_local *local,
2289                                      struct ieee80211_sub_if_data *sdata,
2290                                      struct ieee80211_link_data *link)
2291 {
2292         struct ieee80211_chanctx_conf *conf;
2293         struct ieee80211_chanctx *ctx;
2294
2295         if (!local->use_chanctx)
2296                 return;
2297
2298         mutex_lock(&local->chanctx_mtx);
2299         conf = rcu_dereference_protected(link->conf->chanctx_conf,
2300                                          lockdep_is_held(&local->chanctx_mtx));
2301         if (conf) {
2302                 ctx = container_of(conf, struct ieee80211_chanctx, conf);
2303                 drv_assign_vif_chanctx(local, sdata, link->conf, ctx);
2304         }
2305         mutex_unlock(&local->chanctx_mtx);
2306 }
2307
2308 static void ieee80211_reconfig_stations(struct ieee80211_sub_if_data *sdata)
2309 {
2310         struct ieee80211_local *local = sdata->local;
2311         struct sta_info *sta;
2312
2313         /* add STAs back */
2314         mutex_lock(&local->sta_mtx);
2315         list_for_each_entry(sta, &local->sta_list, list) {
2316                 enum ieee80211_sta_state state;
2317
2318                 if (!sta->uploaded || sta->sdata != sdata)
2319                         continue;
2320
2321                 for (state = IEEE80211_STA_NOTEXIST;
2322                      state < sta->sta_state; state++)
2323                         WARN_ON(drv_sta_state(local, sta->sdata, sta, state,
2324                                               state + 1));
2325         }
2326         mutex_unlock(&local->sta_mtx);
2327 }
2328
2329 static int ieee80211_reconfig_nan(struct ieee80211_sub_if_data *sdata)
2330 {
2331         struct cfg80211_nan_func *func, **funcs;
2332         int res, id, i = 0;
2333
2334         res = drv_start_nan(sdata->local, sdata,
2335                             &sdata->u.nan.conf);
2336         if (WARN_ON(res))
2337                 return res;
2338
2339         funcs = kcalloc(sdata->local->hw.max_nan_de_entries + 1,
2340                         sizeof(*funcs),
2341                         GFP_KERNEL);
2342         if (!funcs)
2343                 return -ENOMEM;
2344
2345         /* Add all the functions:
2346          * This is a little bit ugly. We need to call a potentially sleeping
2347          * callback for each NAN function, so we can't hold the spinlock.
2348          */
2349         spin_lock_bh(&sdata->u.nan.func_lock);
2350
2351         idr_for_each_entry(&sdata->u.nan.function_inst_ids, func, id)
2352                 funcs[i++] = func;
2353
2354         spin_unlock_bh(&sdata->u.nan.func_lock);
2355
2356         for (i = 0; funcs[i]; i++) {
2357                 res = drv_add_nan_func(sdata->local, sdata, funcs[i]);
2358                 if (WARN_ON(res))
2359                         ieee80211_nan_func_terminated(&sdata->vif,
2360                                                       funcs[i]->instance_id,
2361                                                       NL80211_NAN_FUNC_TERM_REASON_ERROR,
2362                                                       GFP_KERNEL);
2363         }
2364
2365         kfree(funcs);
2366
2367         return 0;
2368 }
2369
2370 int ieee80211_reconfig(struct ieee80211_local *local)
2371 {
2372         struct ieee80211_hw *hw = &local->hw;
2373         struct ieee80211_sub_if_data *sdata;
2374         struct ieee80211_chanctx *ctx;
2375         struct sta_info *sta;
2376         int res, i;
2377         bool reconfig_due_to_wowlan = false;
2378         struct ieee80211_sub_if_data *sched_scan_sdata;
2379         struct cfg80211_sched_scan_request *sched_scan_req;
2380         bool sched_scan_stopped = false;
2381         bool suspended = local->suspended;
2382         bool in_reconfig = false;
2383
2384         /* nothing to do if HW shouldn't run */
2385         if (!local->open_count)
2386                 goto wake_up;
2387
2388 #ifdef CONFIG_PM
2389         if (suspended)
2390                 local->resuming = true;
2391
2392         if (local->wowlan) {
2393                 /*
2394                  * In the wowlan case, both mac80211 and the device
2395                  * are functional when the resume op is called, so
2396                  * clear local->suspended so the device could operate
2397                  * normally (e.g. pass rx frames).
2398                  */
2399                 local->suspended = false;
2400                 res = drv_resume(local);
2401                 local->wowlan = false;
2402                 if (res < 0) {
2403                         local->resuming = false;
2404                         return res;
2405                 }
2406                 if (res == 0)
2407                         goto wake_up;
2408                 WARN_ON(res > 1);
2409                 /*
2410                  * res is 1, which means the driver requested
2411                  * to go through a regular reset on wakeup.
2412                  * restore local->suspended in this case.
2413                  */
2414                 reconfig_due_to_wowlan = true;
2415                 local->suspended = true;
2416         }
2417 #endif
2418
2419         /*
2420          * In case of hw_restart during suspend (without wowlan),
2421          * cancel restart work, as we are reconfiguring the device
2422          * anyway.
2423          * Note that restart_work is scheduled on a frozen workqueue,
2424          * so we can't deadlock in this case.
2425          */
2426         if (suspended && local->in_reconfig && !reconfig_due_to_wowlan)
2427                 cancel_work_sync(&local->restart_work);
2428
2429         local->started = false;
2430
2431         /*
2432          * Upon resume hardware can sometimes be goofy due to
2433          * various platform / driver / bus issues, so restarting
2434          * the device may at times not work immediately. Propagate
2435          * the error.
2436          */
2437         res = drv_start(local);
2438         if (res) {
2439                 if (suspended)
2440                         WARN(1, "Hardware became unavailable upon resume. This could be a software issue prior to suspend or a hardware issue.\n");
2441                 else
2442                         WARN(1, "Hardware became unavailable during restart.\n");
2443                 ieee80211_handle_reconfig_failure(local);
2444                 return res;
2445         }
2446
2447         /* setup fragmentation threshold */
2448         drv_set_frag_threshold(local, hw->wiphy->frag_threshold);
2449
2450         /* setup RTS threshold */
2451         drv_set_rts_threshold(local, hw->wiphy->rts_threshold);
2452
2453         /* reset coverage class */
2454         drv_set_coverage_class(local, hw->wiphy->coverage_class);
2455
2456         ieee80211_led_radio(local, true);
2457         ieee80211_mod_tpt_led_trig(local,
2458                                    IEEE80211_TPT_LEDTRIG_FL_RADIO, 0);
2459
2460         /* add interfaces */
2461         sdata = wiphy_dereference(local->hw.wiphy, local->monitor_sdata);
2462         if (sdata) {
2463                 /* in HW restart it exists already */
2464                 WARN_ON(local->resuming);
2465                 res = drv_add_interface(local, sdata);
2466                 if (WARN_ON(res)) {
2467                         RCU_INIT_POINTER(local->monitor_sdata, NULL);
2468                         synchronize_net();
2469                         kfree(sdata);
2470                 }
2471         }
2472
2473         list_for_each_entry(sdata, &local->interfaces, list) {
2474                 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
2475                     sdata->vif.type != NL80211_IFTYPE_MONITOR &&
2476                     ieee80211_sdata_running(sdata)) {
2477                         res = drv_add_interface(local, sdata);
2478                         if (WARN_ON(res))
2479                                 break;
2480                 }
2481         }
2482
2483         /* If adding any of the interfaces failed above, roll back and
2484          * report failure.
2485          */
2486         if (res) {
2487                 list_for_each_entry_continue_reverse(sdata, &local->interfaces,
2488                                                      list)
2489                         if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
2490                             sdata->vif.type != NL80211_IFTYPE_MONITOR &&
2491                             ieee80211_sdata_running(sdata))
2492                                 drv_remove_interface(local, sdata);
2493                 ieee80211_handle_reconfig_failure(local);
2494                 return res;
2495         }
2496
2497         /* add channel contexts */
2498         if (local->use_chanctx) {
2499                 mutex_lock(&local->chanctx_mtx);
2500                 list_for_each_entry(ctx, &local->chanctx_list, list)
2501                         if (ctx->replace_state !=
2502                             IEEE80211_CHANCTX_REPLACES_OTHER)
2503                                 WARN_ON(drv_add_chanctx(local, ctx));
2504                 mutex_unlock(&local->chanctx_mtx);
2505
2506                 sdata = wiphy_dereference(local->hw.wiphy,
2507                                           local->monitor_sdata);
2508                 if (sdata && ieee80211_sdata_running(sdata))
2509                         ieee80211_assign_chanctx(local, sdata, &sdata->deflink);
2510         }
2511
2512         /* reconfigure hardware */
2513         ieee80211_hw_config(local, ~0);
2514
2515         ieee80211_configure_filter(local);
2516
2517         /* Finally also reconfigure all the BSS information */
2518         list_for_each_entry(sdata, &local->interfaces, list) {
2519                 unsigned int link_id;
2520                 u32 changed;
2521
2522                 if (!ieee80211_sdata_running(sdata))
2523                         continue;
2524
2525                 sdata_lock(sdata);
2526                 for (link_id = 0;
2527                      link_id < ARRAY_SIZE(sdata->vif.link_conf);
2528                      link_id++) {
2529                         struct ieee80211_link_data *link;
2530
2531                         link = sdata_dereference(sdata->link[link_id], sdata);
2532                         if (link)
2533                                 ieee80211_assign_chanctx(local, sdata, link);
2534                 }
2535
2536                 switch (sdata->vif.type) {
2537                 case NL80211_IFTYPE_AP_VLAN:
2538                 case NL80211_IFTYPE_MONITOR:
2539                         break;
2540                 case NL80211_IFTYPE_ADHOC:
2541                         if (sdata->vif.cfg.ibss_joined)
2542                                 WARN_ON(drv_join_ibss(local, sdata));
2543                         fallthrough;
2544                 default:
2545                         ieee80211_reconfig_stations(sdata);
2546                         fallthrough;
2547                 case NL80211_IFTYPE_AP: /* AP stations are handled later */
2548                         for (i = 0; i < IEEE80211_NUM_ACS; i++)
2549                                 drv_conf_tx(local, &sdata->deflink, i,
2550                                             &sdata->deflink.tx_conf[i]);
2551                         break;
2552                 }
2553                 sdata_unlock(sdata);
2554
2555                 /* common change flags for all interface types */
2556                 changed = BSS_CHANGED_ERP_CTS_PROT |
2557                           BSS_CHANGED_ERP_PREAMBLE |
2558                           BSS_CHANGED_ERP_SLOT |
2559                           BSS_CHANGED_HT |
2560                           BSS_CHANGED_BASIC_RATES |
2561                           BSS_CHANGED_BEACON_INT |
2562                           BSS_CHANGED_BSSID |
2563                           BSS_CHANGED_CQM |
2564                           BSS_CHANGED_QOS |
2565                           BSS_CHANGED_IDLE |
2566                           BSS_CHANGED_TXPOWER |
2567                           BSS_CHANGED_MCAST_RATE;
2568
2569                 if (sdata->vif.bss_conf.mu_mimo_owner)
2570                         changed |= BSS_CHANGED_MU_GROUPS;
2571
2572                 switch (sdata->vif.type) {
2573                 case NL80211_IFTYPE_STATION:
2574                         changed |= BSS_CHANGED_ASSOC |
2575                                    BSS_CHANGED_ARP_FILTER |
2576                                    BSS_CHANGED_PS;
2577
2578                         /* Re-send beacon info report to the driver */
2579                         if (sdata->deflink.u.mgd.have_beacon)
2580                                 changed |= BSS_CHANGED_BEACON_INFO;
2581
2582                         if (sdata->vif.bss_conf.max_idle_period ||
2583                             sdata->vif.bss_conf.protected_keep_alive)
2584                                 changed |= BSS_CHANGED_KEEP_ALIVE;
2585
2586                         sdata_lock(sdata);
2587                         ieee80211_bss_info_change_notify(sdata, changed);
2588                         sdata_unlock(sdata);
2589                         break;
2590                 case NL80211_IFTYPE_OCB:
2591                         changed |= BSS_CHANGED_OCB;
2592                         ieee80211_bss_info_change_notify(sdata, changed);
2593                         break;
2594                 case NL80211_IFTYPE_ADHOC:
2595                         changed |= BSS_CHANGED_IBSS;
2596                         fallthrough;
2597                 case NL80211_IFTYPE_AP:
2598                         changed |= BSS_CHANGED_SSID | BSS_CHANGED_P2P_PS;
2599
2600                         if (sdata->vif.bss_conf.ftm_responder == 1 &&
2601                             wiphy_ext_feature_isset(sdata->local->hw.wiphy,
2602                                         NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER))
2603                                 changed |= BSS_CHANGED_FTM_RESPONDER;
2604
2605                         if (sdata->vif.type == NL80211_IFTYPE_AP) {
2606                                 changed |= BSS_CHANGED_AP_PROBE_RESP;
2607
2608                                 if (rcu_access_pointer(sdata->deflink.u.ap.beacon))
2609                                         drv_start_ap(local, sdata,
2610                                                      sdata->deflink.conf);
2611                         }
2612                         fallthrough;
2613                 case NL80211_IFTYPE_MESH_POINT:
2614                         if (sdata->vif.bss_conf.enable_beacon) {
2615                                 changed |= BSS_CHANGED_BEACON |
2616                                            BSS_CHANGED_BEACON_ENABLED;
2617                                 ieee80211_bss_info_change_notify(sdata, changed);
2618                         }
2619                         break;
2620                 case NL80211_IFTYPE_NAN:
2621                         res = ieee80211_reconfig_nan(sdata);
2622                         if (res < 0) {
2623                                 ieee80211_handle_reconfig_failure(local);
2624                                 return res;
2625                         }
2626                         break;
2627                 case NL80211_IFTYPE_AP_VLAN:
2628                 case NL80211_IFTYPE_MONITOR:
2629                 case NL80211_IFTYPE_P2P_DEVICE:
2630                         /* nothing to do */
2631                         break;
2632                 case NL80211_IFTYPE_UNSPECIFIED:
2633                 case NUM_NL80211_IFTYPES:
2634                 case NL80211_IFTYPE_P2P_CLIENT:
2635                 case NL80211_IFTYPE_P2P_GO:
2636                 case NL80211_IFTYPE_WDS:
2637                         WARN_ON(1);
2638                         break;
2639                 }
2640         }
2641
2642         ieee80211_recalc_ps(local);
2643
2644         /*
2645          * The sta might be in psm against the ap (e.g. because
2646          * this was the state before a hw restart), so we
2647          * explicitly send a null packet in order to make sure
2648          * it'll sync against the ap (and get out of psm).
2649          */
2650         if (!(local->hw.conf.flags & IEEE80211_CONF_PS)) {
2651                 list_for_each_entry(sdata, &local->interfaces, list) {
2652                         if (sdata->vif.type != NL80211_IFTYPE_STATION)
2653                                 continue;
2654                         if (!sdata->u.mgd.associated)
2655                                 continue;
2656
2657                         ieee80211_send_nullfunc(local, sdata, false);
2658                 }
2659         }
2660
2661         /* APs are now beaconing, add back stations */
2662         list_for_each_entry(sdata, &local->interfaces, list) {
2663                 if (!ieee80211_sdata_running(sdata))
2664                         continue;
2665
2666                 sdata_lock(sdata);
2667                 switch (sdata->vif.type) {
2668                 case NL80211_IFTYPE_AP_VLAN:
2669                 case NL80211_IFTYPE_AP:
2670                         ieee80211_reconfig_stations(sdata);
2671                         break;
2672                 default:
2673                         break;
2674                 }
2675                 sdata_unlock(sdata);
2676         }
2677
2678         /* add back keys */
2679         list_for_each_entry(sdata, &local->interfaces, list)
2680                 ieee80211_reenable_keys(sdata);
2681
2682         /* Reconfigure sched scan if it was interrupted by FW restart */
2683         mutex_lock(&local->mtx);
2684         sched_scan_sdata = rcu_dereference_protected(local->sched_scan_sdata,
2685                                                 lockdep_is_held(&local->mtx));
2686         sched_scan_req = rcu_dereference_protected(local->sched_scan_req,
2687                                                 lockdep_is_held(&local->mtx));
2688         if (sched_scan_sdata && sched_scan_req)
2689                 /*
2690                  * Sched scan stopped, but we don't want to report it. Instead,
2691                  * we're trying to reschedule. However, if more than one scan
2692                  * plan was set, we cannot reschedule since we don't know which
2693                  * scan plan was currently running (and some scan plans may have
2694                  * already finished).
2695                  */
2696                 if (sched_scan_req->n_scan_plans > 1 ||
2697                     __ieee80211_request_sched_scan_start(sched_scan_sdata,
2698                                                          sched_scan_req)) {
2699                         RCU_INIT_POINTER(local->sched_scan_sdata, NULL);
2700                         RCU_INIT_POINTER(local->sched_scan_req, NULL);
2701                         sched_scan_stopped = true;
2702                 }
2703         mutex_unlock(&local->mtx);
2704
2705         if (sched_scan_stopped)
2706                 cfg80211_sched_scan_stopped_locked(local->hw.wiphy, 0);
2707
2708  wake_up:
2709
2710         if (local->monitors == local->open_count && local->monitors > 0)
2711                 ieee80211_add_virtual_monitor(local);
2712
2713         /*
2714          * Clear the WLAN_STA_BLOCK_BA flag so new aggregation
2715          * sessions can be established after a resume.
2716          *
2717          * Also tear down aggregation sessions since reconfiguring
2718          * them in a hardware restart scenario is not easily done
2719          * right now, and the hardware will have lost information
2720          * about the sessions, but we and the AP still think they
2721          * are active. This is really a workaround though.
2722          */
2723         if (ieee80211_hw_check(hw, AMPDU_AGGREGATION)) {
2724                 mutex_lock(&local->sta_mtx);
2725
2726                 list_for_each_entry(sta, &local->sta_list, list) {
2727                         if (!local->resuming)
2728                                 ieee80211_sta_tear_down_BA_sessions(
2729                                                 sta, AGG_STOP_LOCAL_REQUEST);
2730                         clear_sta_flag(sta, WLAN_STA_BLOCK_BA);
2731                 }
2732
2733                 mutex_unlock(&local->sta_mtx);
2734         }
2735
2736         /*
2737          * If this is for hw restart things are still running.
2738          * We may want to change that later, however.
2739          */
2740         if (local->open_count && (!suspended || reconfig_due_to_wowlan))
2741                 drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_RESTART);
2742
2743         if (local->in_reconfig) {
2744                 in_reconfig = local->in_reconfig;
2745                 local->in_reconfig = false;
2746                 barrier();
2747
2748                 /* Restart deferred ROCs */
2749                 mutex_lock(&local->mtx);
2750                 ieee80211_start_next_roc(local);
2751                 mutex_unlock(&local->mtx);
2752
2753                 /* Requeue all works */
2754                 list_for_each_entry(sdata, &local->interfaces, list)
2755                         ieee80211_queue_work(&local->hw, &sdata->work);
2756         }
2757
2758         ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
2759                                         IEEE80211_QUEUE_STOP_REASON_SUSPEND,
2760                                         false);
2761
2762         if (in_reconfig) {
2763                 list_for_each_entry(sdata, &local->interfaces, list) {
2764                         if (!ieee80211_sdata_running(sdata))
2765                                 continue;
2766                         if (sdata->vif.type == NL80211_IFTYPE_STATION)
2767                                 ieee80211_sta_restart(sdata);
2768                 }
2769         }
2770
2771         if (!suspended)
2772                 return 0;
2773
2774 #ifdef CONFIG_PM
2775         /* first set suspended false, then resuming */
2776         local->suspended = false;
2777         mb();
2778         local->resuming = false;
2779
2780         ieee80211_flush_completed_scan(local, false);
2781
2782         if (local->open_count && !reconfig_due_to_wowlan)
2783                 drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_SUSPEND);
2784
2785         list_for_each_entry(sdata, &local->interfaces, list) {
2786                 if (!ieee80211_sdata_running(sdata))
2787                         continue;
2788                 if (sdata->vif.type == NL80211_IFTYPE_STATION)
2789                         ieee80211_sta_restart(sdata);
2790         }
2791
2792         mod_timer(&local->sta_cleanup, jiffies + 1);
2793 #else
2794         WARN_ON(1);
2795 #endif
2796
2797         return 0;
2798 }
2799
2800 static void ieee80211_reconfig_disconnect(struct ieee80211_vif *vif, u8 flag)
2801 {
2802         struct ieee80211_sub_if_data *sdata;
2803         struct ieee80211_local *local;
2804         struct ieee80211_key *key;
2805
2806         if (WARN_ON(!vif))
2807                 return;
2808
2809         sdata = vif_to_sdata(vif);
2810         local = sdata->local;
2811
2812         if (WARN_ON(flag & IEEE80211_SDATA_DISCONNECT_RESUME &&
2813                     !local->resuming))
2814                 return;
2815
2816         if (WARN_ON(flag & IEEE80211_SDATA_DISCONNECT_HW_RESTART &&
2817                     !local->in_reconfig))
2818                 return;
2819
2820         if (WARN_ON(vif->type != NL80211_IFTYPE_STATION))
2821                 return;
2822
2823         sdata->flags |= flag;
2824
2825         mutex_lock(&local->key_mtx);
2826         list_for_each_entry(key, &sdata->key_list, list)
2827                 key->flags |= KEY_FLAG_TAINTED;
2828         mutex_unlock(&local->key_mtx);
2829 }
2830
2831 void ieee80211_hw_restart_disconnect(struct ieee80211_vif *vif)
2832 {
2833         ieee80211_reconfig_disconnect(vif, IEEE80211_SDATA_DISCONNECT_HW_RESTART);
2834 }
2835 EXPORT_SYMBOL_GPL(ieee80211_hw_restart_disconnect);
2836
2837 void ieee80211_resume_disconnect(struct ieee80211_vif *vif)
2838 {
2839         ieee80211_reconfig_disconnect(vif, IEEE80211_SDATA_DISCONNECT_RESUME);
2840 }
2841 EXPORT_SYMBOL_GPL(ieee80211_resume_disconnect);
2842
2843 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata,
2844                            struct ieee80211_link_data *link)
2845 {
2846         struct ieee80211_local *local = sdata->local;
2847         struct ieee80211_chanctx_conf *chanctx_conf;
2848         struct ieee80211_chanctx *chanctx;
2849
2850         mutex_lock(&local->chanctx_mtx);
2851
2852         chanctx_conf = rcu_dereference_protected(link->conf->chanctx_conf,
2853                                                  lockdep_is_held(&local->chanctx_mtx));
2854
2855         /*
2856          * This function can be called from a work, thus it may be possible
2857          * that the chanctx_conf is removed (due to a disconnection, for
2858          * example).
2859          * So nothing should be done in such case.
2860          */
2861         if (!chanctx_conf)
2862                 goto unlock;
2863
2864         chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf);
2865         ieee80211_recalc_smps_chanctx(local, chanctx);
2866  unlock:
2867         mutex_unlock(&local->chanctx_mtx);
2868 }
2869
2870 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata,
2871                                   int link_id)
2872 {
2873         struct ieee80211_local *local = sdata->local;
2874         struct ieee80211_chanctx_conf *chanctx_conf;
2875         struct ieee80211_chanctx *chanctx;
2876         int i;
2877
2878         mutex_lock(&local->chanctx_mtx);
2879
2880         for (i = 0; i < ARRAY_SIZE(sdata->vif.link_conf); i++) {
2881                 struct ieee80211_bss_conf *bss_conf;
2882
2883                 if (link_id >= 0 && link_id != i)
2884                         continue;
2885
2886                 rcu_read_lock();
2887                 bss_conf = rcu_dereference(sdata->vif.link_conf[i]);
2888                 if (!bss_conf) {
2889                         rcu_read_unlock();
2890                         continue;
2891                 }
2892
2893                 chanctx_conf = rcu_dereference_protected(bss_conf->chanctx_conf,
2894                                                          lockdep_is_held(&local->chanctx_mtx));
2895                 /*
2896                  * Since we hold the chanctx_mtx (checked above)
2897                  * we can take the chanctx_conf pointer out of the
2898                  * RCU critical section, it cannot go away without
2899                  * the mutex. Just the way we reached it could - in
2900                  * theory - go away, but we don't really care and
2901                  * it really shouldn't happen anyway.
2902                  */
2903                 rcu_read_unlock();
2904
2905                 if (!chanctx_conf)
2906                         goto unlock;
2907
2908                 chanctx = container_of(chanctx_conf, struct ieee80211_chanctx,
2909                                        conf);
2910                 ieee80211_recalc_chanctx_min_def(local, chanctx);
2911         }
2912  unlock:
2913         mutex_unlock(&local->chanctx_mtx);
2914 }
2915
2916 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset)
2917 {
2918         size_t pos = offset;
2919
2920         while (pos < ielen && ies[pos] != WLAN_EID_VENDOR_SPECIFIC)
2921                 pos += 2 + ies[pos + 1];
2922
2923         return pos;
2924 }
2925
2926 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
2927                               u16 cap)
2928 {
2929         __le16 tmp;
2930
2931         *pos++ = WLAN_EID_HT_CAPABILITY;
2932         *pos++ = sizeof(struct ieee80211_ht_cap);
2933         memset(pos, 0, sizeof(struct ieee80211_ht_cap));
2934
2935         /* capability flags */
2936         tmp = cpu_to_le16(cap);
2937         memcpy(pos, &tmp, sizeof(u16));
2938         pos += sizeof(u16);
2939
2940         /* AMPDU parameters */
2941         *pos++ = ht_cap->ampdu_factor |
2942                  (ht_cap->ampdu_density <<
2943                         IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT);
2944
2945         /* MCS set */
2946         memcpy(pos, &ht_cap->mcs, sizeof(ht_cap->mcs));
2947         pos += sizeof(ht_cap->mcs);
2948
2949         /* extended capabilities */
2950         pos += sizeof(__le16);
2951
2952         /* BF capabilities */
2953         pos += sizeof(__le32);
2954
2955         /* antenna selection */
2956         pos += sizeof(u8);
2957
2958         return pos;
2959 }
2960
2961 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
2962                                u32 cap)
2963 {
2964         __le32 tmp;
2965
2966         *pos++ = WLAN_EID_VHT_CAPABILITY;
2967         *pos++ = sizeof(struct ieee80211_vht_cap);
2968         memset(pos, 0, sizeof(struct ieee80211_vht_cap));
2969
2970         /* capability flags */
2971         tmp = cpu_to_le32(cap);
2972         memcpy(pos, &tmp, sizeof(u32));
2973         pos += sizeof(u32);
2974
2975         /* VHT MCS set */
2976         memcpy(pos, &vht_cap->vht_mcs, sizeof(vht_cap->vht_mcs));
2977         pos += sizeof(vht_cap->vht_mcs);
2978
2979         return pos;
2980 }
2981
2982 u8 ieee80211_ie_len_he_cap(struct ieee80211_sub_if_data *sdata, u8 iftype)
2983 {
2984         const struct ieee80211_sta_he_cap *he_cap;
2985         struct ieee80211_supported_band *sband;
2986         u8 n;
2987
2988         sband = ieee80211_get_sband(sdata);
2989         if (!sband)
2990                 return 0;
2991
2992         he_cap = ieee80211_get_he_iftype_cap(sband, iftype);
2993         if (!he_cap)
2994                 return 0;
2995
2996         n = ieee80211_he_mcs_nss_size(&he_cap->he_cap_elem);
2997         return 2 + 1 +
2998                sizeof(he_cap->he_cap_elem) + n +
2999                ieee80211_he_ppe_size(he_cap->ppe_thres[0],
3000                                      he_cap->he_cap_elem.phy_cap_info);
3001 }
3002
3003 u8 *ieee80211_ie_build_he_cap(ieee80211_conn_flags_t disable_flags, u8 *pos,
3004                               const struct ieee80211_sta_he_cap *he_cap,
3005                               u8 *end)
3006 {
3007         struct ieee80211_he_cap_elem elem;
3008         u8 n;
3009         u8 ie_len;
3010         u8 *orig_pos = pos;
3011
3012         /* Make sure we have place for the IE */
3013         /*
3014          * TODO: the 1 added is because this temporarily is under the EXTENSION
3015          * IE. Get rid of it when it moves.
3016          */
3017         if (!he_cap)
3018                 return orig_pos;
3019
3020         /* modify on stack first to calculate 'n' and 'ie_len' correctly */
3021         elem = he_cap->he_cap_elem;
3022
3023         if (disable_flags & IEEE80211_CONN_DISABLE_40MHZ)
3024                 elem.phy_cap_info[0] &=
3025                         ~(IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G |
3026                           IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_IN_2G);
3027
3028         if (disable_flags & IEEE80211_CONN_DISABLE_160MHZ)
3029                 elem.phy_cap_info[0] &=
3030                         ~IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G;
3031
3032         if (disable_flags & IEEE80211_CONN_DISABLE_80P80MHZ)
3033                 elem.phy_cap_info[0] &=
3034                         ~IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G;
3035
3036         n = ieee80211_he_mcs_nss_size(&elem);
3037         ie_len = 2 + 1 +
3038                  sizeof(he_cap->he_cap_elem) + n +
3039                  ieee80211_he_ppe_size(he_cap->ppe_thres[0],
3040                                        he_cap->he_cap_elem.phy_cap_info);
3041
3042         if ((end - pos) < ie_len)
3043                 return orig_pos;
3044
3045         *pos++ = WLAN_EID_EXTENSION;
3046         pos++; /* We'll set the size later below */
3047         *pos++ = WLAN_EID_EXT_HE_CAPABILITY;
3048
3049         /* Fixed data */
3050         memcpy(pos, &elem, sizeof(elem));
3051         pos += sizeof(elem);
3052
3053         memcpy(pos, &he_cap->he_mcs_nss_supp, n);
3054         pos += n;
3055
3056         /* Check if PPE Threshold should be present */
3057         if ((he_cap->he_cap_elem.phy_cap_info[6] &
3058              IEEE80211_HE_PHY_CAP6_PPE_THRESHOLD_PRESENT) == 0)
3059                 goto end;
3060
3061         /*
3062          * Calculate how many PPET16/PPET8 pairs are to come. Algorithm:
3063          * (NSS_M1 + 1) x (num of 1 bits in RU_INDEX_BITMASK)
3064          */
3065         n = hweight8(he_cap->ppe_thres[0] &
3066                      IEEE80211_PPE_THRES_RU_INDEX_BITMASK_MASK);
3067         n *= (1 + ((he_cap->ppe_thres[0] & IEEE80211_PPE_THRES_NSS_MASK) >>
3068                    IEEE80211_PPE_THRES_NSS_POS));
3069
3070         /*
3071          * Each pair is 6 bits, and we need to add the 7 "header" bits to the
3072          * total size.
3073          */
3074         n = (n * IEEE80211_PPE_THRES_INFO_PPET_SIZE * 2) + 7;
3075         n = DIV_ROUND_UP(n, 8);
3076
3077         /* Copy PPE Thresholds */
3078         memcpy(pos, &he_cap->ppe_thres, n);
3079         pos += n;
3080
3081 end:
3082         orig_pos[1] = (pos - orig_pos) - 2;
3083         return pos;
3084 }
3085
3086 void ieee80211_ie_build_he_6ghz_cap(struct ieee80211_sub_if_data *sdata,
3087                                     enum ieee80211_smps_mode smps_mode,
3088                                     struct sk_buff *skb)
3089 {
3090         struct ieee80211_supported_band *sband;
3091         const struct ieee80211_sband_iftype_data *iftd;
3092         enum nl80211_iftype iftype = ieee80211_vif_type_p2p(&sdata->vif);
3093         u8 *pos;
3094         u16 cap;
3095
3096         if (!cfg80211_any_usable_channels(sdata->local->hw.wiphy,
3097                                           BIT(NL80211_BAND_6GHZ),
3098                                           IEEE80211_CHAN_NO_HE))
3099                 return;
3100
3101         sband = sdata->local->hw.wiphy->bands[NL80211_BAND_6GHZ];
3102
3103         iftd = ieee80211_get_sband_iftype_data(sband, iftype);
3104         if (!iftd)
3105                 return;
3106
3107         /* Check for device HE 6 GHz capability before adding element */
3108         if (!iftd->he_6ghz_capa.capa)
3109                 return;
3110
3111         cap = le16_to_cpu(iftd->he_6ghz_capa.capa);
3112         cap &= ~IEEE80211_HE_6GHZ_CAP_SM_PS;
3113
3114         switch (smps_mode) {
3115         case IEEE80211_SMPS_AUTOMATIC:
3116         case IEEE80211_SMPS_NUM_MODES:
3117                 WARN_ON(1);
3118                 fallthrough;
3119         case IEEE80211_SMPS_OFF:
3120                 cap |= u16_encode_bits(WLAN_HT_CAP_SM_PS_DISABLED,
3121                                        IEEE80211_HE_6GHZ_CAP_SM_PS);
3122                 break;
3123         case IEEE80211_SMPS_STATIC:
3124                 cap |= u16_encode_bits(WLAN_HT_CAP_SM_PS_STATIC,
3125                                        IEEE80211_HE_6GHZ_CAP_SM_PS);
3126                 break;
3127         case IEEE80211_SMPS_DYNAMIC:
3128                 cap |= u16_encode_bits(WLAN_HT_CAP_SM_PS_DYNAMIC,
3129                                        IEEE80211_HE_6GHZ_CAP_SM_PS);
3130                 break;
3131         }
3132
3133         pos = skb_put(skb, 2 + 1 + sizeof(cap));
3134         ieee80211_write_he_6ghz_cap(pos, cpu_to_le16(cap),
3135                                     pos + 2 + 1 + sizeof(cap));
3136 }
3137
3138 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
3139                                const struct cfg80211_chan_def *chandef,
3140                                u16 prot_mode, bool rifs_mode)
3141 {
3142         struct ieee80211_ht_operation *ht_oper;
3143         /* Build HT Information */
3144         *pos++ = WLAN_EID_HT_OPERATION;
3145         *pos++ = sizeof(struct ieee80211_ht_operation);
3146         ht_oper = (struct ieee80211_ht_operation *)pos;
3147         ht_oper->primary_chan = ieee80211_frequency_to_channel(
3148                                         chandef->chan->center_freq);
3149         switch (chandef->width) {
3150         case NL80211_CHAN_WIDTH_160:
3151         case NL80211_CHAN_WIDTH_80P80:
3152         case NL80211_CHAN_WIDTH_80:
3153         case NL80211_CHAN_WIDTH_40:
3154                 if (chandef->center_freq1 > chandef->chan->center_freq)
3155                         ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
3156                 else
3157                         ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
3158                 break;
3159         case NL80211_CHAN_WIDTH_320:
3160                 /* HT information element should not be included on 6GHz */
3161                 WARN_ON(1);
3162                 return pos;
3163         default:
3164                 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_NONE;
3165                 break;
3166         }
3167         if (ht_cap->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 &&
3168             chandef->width != NL80211_CHAN_WIDTH_20_NOHT &&
3169             chandef->width != NL80211_CHAN_WIDTH_20)
3170                 ht_oper->ht_param |= IEEE80211_HT_PARAM_CHAN_WIDTH_ANY;
3171
3172         if (rifs_mode)
3173                 ht_oper->ht_param |= IEEE80211_HT_PARAM_RIFS_MODE;
3174
3175         ht_oper->operation_mode = cpu_to_le16(prot_mode);
3176         ht_oper->stbc_param = 0x0000;
3177
3178         /* It seems that Basic MCS set and Supported MCS set
3179            are identical for the first 10 bytes */
3180         memset(&ht_oper->basic_set, 0, 16);
3181         memcpy(&ht_oper->basic_set, &ht_cap->mcs, 10);
3182
3183         return pos + sizeof(struct ieee80211_ht_operation);
3184 }
3185
3186 void ieee80211_ie_build_wide_bw_cs(u8 *pos,
3187                                    const struct cfg80211_chan_def *chandef)
3188 {
3189         *pos++ = WLAN_EID_WIDE_BW_CHANNEL_SWITCH;       /* EID */
3190         *pos++ = 3;                                     /* IE length */
3191         /* New channel width */
3192         switch (chandef->width) {
3193         case NL80211_CHAN_WIDTH_80:
3194                 *pos++ = IEEE80211_VHT_CHANWIDTH_80MHZ;
3195                 break;
3196         case NL80211_CHAN_WIDTH_160:
3197                 *pos++ = IEEE80211_VHT_CHANWIDTH_160MHZ;
3198                 break;
3199         case NL80211_CHAN_WIDTH_80P80:
3200                 *pos++ = IEEE80211_VHT_CHANWIDTH_80P80MHZ;
3201                 break;
3202         case NL80211_CHAN_WIDTH_320:
3203                 /* The behavior is not defined for 320 MHz channels */
3204                 WARN_ON(1);
3205                 fallthrough;
3206         default:
3207                 *pos++ = IEEE80211_VHT_CHANWIDTH_USE_HT;
3208         }
3209
3210         /* new center frequency segment 0 */
3211         *pos++ = ieee80211_frequency_to_channel(chandef->center_freq1);
3212         /* new center frequency segment 1 */
3213         if (chandef->center_freq2)
3214                 *pos++ = ieee80211_frequency_to_channel(chandef->center_freq2);
3215         else
3216                 *pos++ = 0;
3217 }
3218
3219 u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
3220                                 const struct cfg80211_chan_def *chandef)
3221 {
3222         struct ieee80211_vht_operation *vht_oper;
3223
3224         *pos++ = WLAN_EID_VHT_OPERATION;
3225         *pos++ = sizeof(struct ieee80211_vht_operation);
3226         vht_oper = (struct ieee80211_vht_operation *)pos;
3227         vht_oper->center_freq_seg0_idx = ieee80211_frequency_to_channel(
3228                                                         chandef->center_freq1);
3229         if (chandef->center_freq2)
3230                 vht_oper->center_freq_seg1_idx =
3231                         ieee80211_frequency_to_channel(chandef->center_freq2);
3232         else
3233                 vht_oper->center_freq_seg1_idx = 0x00;
3234
3235         switch (chandef->width) {
3236         case NL80211_CHAN_WIDTH_160:
3237                 /*
3238                  * Convert 160 MHz channel width to new style as interop
3239                  * workaround.
3240                  */
3241                 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ;
3242                 vht_oper->center_freq_seg1_idx = vht_oper->center_freq_seg0_idx;
3243                 if (chandef->chan->center_freq < chandef->center_freq1)
3244                         vht_oper->center_freq_seg0_idx -= 8;
3245                 else
3246                         vht_oper->center_freq_seg0_idx += 8;
3247                 break;
3248         case NL80211_CHAN_WIDTH_80P80:
3249                 /*
3250                  * Convert 80+80 MHz channel width to new style as interop
3251                  * workaround.
3252                  */
3253                 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ;
3254                 break;
3255         case NL80211_CHAN_WIDTH_80:
3256                 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ;
3257                 break;
3258         case NL80211_CHAN_WIDTH_320:
3259                 /* VHT information element should not be included on 6GHz */
3260                 WARN_ON(1);
3261                 return pos;
3262         default:
3263                 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_USE_HT;
3264                 break;
3265         }
3266
3267         /* don't require special VHT peer rates */
3268         vht_oper->basic_mcs_set = cpu_to_le16(0xffff);
3269
3270         return pos + sizeof(struct ieee80211_vht_operation);
3271 }
3272
3273 u8 *ieee80211_ie_build_he_oper(u8 *pos, struct cfg80211_chan_def *chandef)
3274 {
3275         struct ieee80211_he_operation *he_oper;
3276         struct ieee80211_he_6ghz_oper *he_6ghz_op;
3277         u32 he_oper_params;
3278         u8 ie_len = 1 + sizeof(struct ieee80211_he_operation);
3279
3280         if (chandef->chan->band == NL80211_BAND_6GHZ)
3281                 ie_len += sizeof(struct ieee80211_he_6ghz_oper);
3282
3283         *pos++ = WLAN_EID_EXTENSION;
3284         *pos++ = ie_len;
3285         *pos++ = WLAN_EID_EXT_HE_OPERATION;
3286
3287         he_oper_params = 0;
3288         he_oper_params |= u32_encode_bits(1023, /* disabled */
3289                                 IEEE80211_HE_OPERATION_RTS_THRESHOLD_MASK);
3290         he_oper_params |= u32_encode_bits(1,
3291                                 IEEE80211_HE_OPERATION_ER_SU_DISABLE);
3292         he_oper_params |= u32_encode_bits(1,
3293                                 IEEE80211_HE_OPERATION_BSS_COLOR_DISABLED);
3294         if (chandef->chan->band == NL80211_BAND_6GHZ)
3295                 he_oper_params |= u32_encode_bits(1,
3296                                 IEEE80211_HE_OPERATION_6GHZ_OP_INFO);
3297
3298         he_oper = (struct ieee80211_he_operation *)pos;
3299         he_oper->he_oper_params = cpu_to_le32(he_oper_params);
3300
3301         /* don't require special HE peer rates */
3302         he_oper->he_mcs_nss_set = cpu_to_le16(0xffff);
3303         pos += sizeof(struct ieee80211_he_operation);
3304
3305         if (chandef->chan->band != NL80211_BAND_6GHZ)
3306                 goto out;
3307
3308         /* TODO add VHT operational */
3309         he_6ghz_op = (struct ieee80211_he_6ghz_oper *)pos;
3310         he_6ghz_op->minrate = 6; /* 6 Mbps */
3311         he_6ghz_op->primary =
3312                 ieee80211_frequency_to_channel(chandef->chan->center_freq);
3313         he_6ghz_op->ccfs0 =
3314                 ieee80211_frequency_to_channel(chandef->center_freq1);
3315         if (chandef->center_freq2)
3316                 he_6ghz_op->ccfs1 =
3317                         ieee80211_frequency_to_channel(chandef->center_freq2);
3318         else
3319                 he_6ghz_op->ccfs1 = 0;
3320
3321         switch (chandef->width) {
3322         case NL80211_CHAN_WIDTH_320:
3323                 /*
3324                  * TODO: mesh operation is not defined over 6GHz 320 MHz
3325                  * channels.
3326                  */
3327                 WARN_ON(1);
3328                 break;
3329         case NL80211_CHAN_WIDTH_160:
3330                 /* Convert 160 MHz channel width to new style as interop
3331                  * workaround.
3332                  */
3333                 he_6ghz_op->control =
3334                         IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_160MHZ;
3335                 he_6ghz_op->ccfs1 = he_6ghz_op->ccfs0;
3336                 if (chandef->chan->center_freq < chandef->center_freq1)
3337                         he_6ghz_op->ccfs0 -= 8;
3338                 else
3339                         he_6ghz_op->ccfs0 += 8;
3340                 fallthrough;
3341         case NL80211_CHAN_WIDTH_80P80:
3342                 he_6ghz_op->control =
3343                         IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_160MHZ;
3344                 break;
3345         case NL80211_CHAN_WIDTH_80:
3346                 he_6ghz_op->control =
3347                         IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_80MHZ;
3348                 break;
3349         case NL80211_CHAN_WIDTH_40:
3350                 he_6ghz_op->control =
3351                         IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_40MHZ;
3352                 break;
3353         default:
3354                 he_6ghz_op->control =
3355                         IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_20MHZ;
3356                 break;
3357         }
3358
3359         pos += sizeof(struct ieee80211_he_6ghz_oper);
3360
3361 out:
3362         return pos;
3363 }
3364
3365 bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper,
3366                                struct cfg80211_chan_def *chandef)
3367 {
3368         enum nl80211_channel_type channel_type;
3369
3370         if (!ht_oper)
3371                 return false;
3372
3373         switch (ht_oper->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) {
3374         case IEEE80211_HT_PARAM_CHA_SEC_NONE:
3375                 channel_type = NL80211_CHAN_HT20;
3376                 break;
3377         case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
3378                 channel_type = NL80211_CHAN_HT40PLUS;
3379                 break;
3380         case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
3381                 channel_type = NL80211_CHAN_HT40MINUS;
3382                 break;
3383         default:
3384                 return false;
3385         }
3386
3387         cfg80211_chandef_create(chandef, chandef->chan, channel_type);
3388         return true;
3389 }
3390
3391 bool ieee80211_chandef_vht_oper(struct ieee80211_hw *hw, u32 vht_cap_info,
3392                                 const struct ieee80211_vht_operation *oper,
3393                                 const struct ieee80211_ht_operation *htop,
3394                                 struct cfg80211_chan_def *chandef)
3395 {
3396         struct cfg80211_chan_def new = *chandef;
3397         int cf0, cf1;
3398         int ccfs0, ccfs1, ccfs2;
3399         int ccf0, ccf1;
3400         u32 vht_cap;
3401         bool support_80_80 = false;
3402         bool support_160 = false;
3403         u8 ext_nss_bw_supp = u32_get_bits(vht_cap_info,
3404                                           IEEE80211_VHT_CAP_EXT_NSS_BW_MASK);
3405         u8 supp_chwidth = u32_get_bits(vht_cap_info,
3406                                        IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK);
3407
3408         if (!oper || !htop)
3409                 return false;
3410
3411         vht_cap = hw->wiphy->bands[chandef->chan->band]->vht_cap.cap;
3412         support_160 = (vht_cap & (IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK |
3413                                   IEEE80211_VHT_CAP_EXT_NSS_BW_MASK));
3414         support_80_80 = ((vht_cap &
3415                          IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ) ||
3416                         (vht_cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ &&
3417                          vht_cap & IEEE80211_VHT_CAP_EXT_NSS_BW_MASK) ||
3418                         ((vht_cap & IEEE80211_VHT_CAP_EXT_NSS_BW_MASK) >>
3419                                     IEEE80211_VHT_CAP_EXT_NSS_BW_SHIFT > 1));
3420         ccfs0 = oper->center_freq_seg0_idx;
3421         ccfs1 = oper->center_freq_seg1_idx;
3422         ccfs2 = (le16_to_cpu(htop->operation_mode) &
3423                                 IEEE80211_HT_OP_MODE_CCFS2_MASK)
3424                         >> IEEE80211_HT_OP_MODE_CCFS2_SHIFT;
3425
3426         ccf0 = ccfs0;
3427
3428         /* if not supported, parse as though we didn't understand it */
3429         if (!ieee80211_hw_check(hw, SUPPORTS_VHT_EXT_NSS_BW))
3430                 ext_nss_bw_supp = 0;
3431
3432         /*
3433          * Cf. IEEE 802.11 Table 9-250
3434          *
3435          * We really just consider that because it's inefficient to connect
3436          * at a higher bandwidth than we'll actually be able to use.
3437          */
3438         switch ((supp_chwidth << 4) | ext_nss_bw_supp) {
3439         default:
3440         case 0x00:
3441                 ccf1 = 0;
3442                 support_160 = false;
3443                 support_80_80 = false;
3444                 break;
3445         case 0x01:
3446                 support_80_80 = false;
3447                 fallthrough;
3448         case 0x02:
3449         case 0x03:
3450                 ccf1 = ccfs2;
3451                 break;
3452         case 0x10:
3453                 ccf1 = ccfs1;
3454                 break;
3455         case 0x11:
3456         case 0x12:
3457                 if (!ccfs1)
3458                         ccf1 = ccfs2;
3459                 else
3460                         ccf1 = ccfs1;
3461                 break;
3462         case 0x13:
3463         case 0x20:
3464         case 0x23:
3465                 ccf1 = ccfs1;
3466                 break;
3467         }
3468
3469         cf0 = ieee80211_channel_to_frequency(ccf0, chandef->chan->band);
3470         cf1 = ieee80211_channel_to_frequency(ccf1, chandef->chan->band);
3471
3472         switch (oper->chan_width) {
3473         case IEEE80211_VHT_CHANWIDTH_USE_HT:
3474                 /* just use HT information directly */
3475                 break;
3476         case IEEE80211_VHT_CHANWIDTH_80MHZ:
3477                 new.width = NL80211_CHAN_WIDTH_80;
3478                 new.center_freq1 = cf0;
3479                 /* If needed, adjust based on the newer interop workaround. */
3480                 if (ccf1) {
3481                         unsigned int diff;
3482
3483                         diff = abs(ccf1 - ccf0);
3484                         if ((diff == 8) && support_160) {
3485                                 new.width = NL80211_CHAN_WIDTH_160;
3486                                 new.center_freq1 = cf1;
3487                         } else if ((diff > 8) && support_80_80) {
3488                                 new.width = NL80211_CHAN_WIDTH_80P80;
3489                                 new.center_freq2 = cf1;
3490                         }
3491                 }
3492                 break;
3493         case IEEE80211_VHT_CHANWIDTH_160MHZ:
3494                 /* deprecated encoding */
3495                 new.width = NL80211_CHAN_WIDTH_160;
3496                 new.center_freq1 = cf0;
3497                 break;
3498         case IEEE80211_VHT_CHANWIDTH_80P80MHZ:
3499                 /* deprecated encoding */
3500                 new.width = NL80211_CHAN_WIDTH_80P80;
3501                 new.center_freq1 = cf0;
3502                 new.center_freq2 = cf1;
3503                 break;
3504         default:
3505                 return false;
3506         }
3507
3508         if (!cfg80211_chandef_valid(&new))
3509                 return false;
3510
3511         *chandef = new;
3512         return true;
3513 }
3514
3515 void ieee80211_chandef_eht_oper(const struct ieee80211_eht_operation *eht_oper,
3516                                 bool support_160, bool support_320,
3517                                 struct cfg80211_chan_def *chandef)
3518 {
3519         struct ieee80211_eht_operation_info *info = (void *)eht_oper->optional;
3520
3521         chandef->center_freq1 =
3522                 ieee80211_channel_to_frequency(info->ccfs0,
3523                                                chandef->chan->band);
3524
3525         switch (u8_get_bits(info->control,
3526                             IEEE80211_EHT_OPER_CHAN_WIDTH)) {
3527         case IEEE80211_EHT_OPER_CHAN_WIDTH_20MHZ:
3528                 chandef->width = NL80211_CHAN_WIDTH_20;
3529                 break;
3530         case IEEE80211_EHT_OPER_CHAN_WIDTH_40MHZ:
3531                 chandef->width = NL80211_CHAN_WIDTH_40;
3532                 break;
3533         case IEEE80211_EHT_OPER_CHAN_WIDTH_80MHZ:
3534                 chandef->width = NL80211_CHAN_WIDTH_80;
3535                 break;
3536         case IEEE80211_EHT_OPER_CHAN_WIDTH_160MHZ:
3537                 if (support_160) {
3538                         chandef->width = NL80211_CHAN_WIDTH_160;
3539                         chandef->center_freq1 =
3540                                 ieee80211_channel_to_frequency(info->ccfs1,
3541                                                                chandef->chan->band);
3542                 } else {
3543                         chandef->width = NL80211_CHAN_WIDTH_80;
3544                 }
3545                 break;
3546         case IEEE80211_EHT_OPER_CHAN_WIDTH_320MHZ:
3547                 if (support_320) {
3548                         chandef->width = NL80211_CHAN_WIDTH_320;
3549                         chandef->center_freq1 =
3550                                 ieee80211_channel_to_frequency(info->ccfs1,
3551                                                                chandef->chan->band);
3552                 } else if (support_160) {
3553                         chandef->width = NL80211_CHAN_WIDTH_160;
3554                 } else {
3555                         chandef->width = NL80211_CHAN_WIDTH_80;
3556
3557                         if (chandef->center_freq1 > chandef->chan->center_freq)
3558                                 chandef->center_freq1 -= 40;
3559                         else
3560                                 chandef->center_freq1 += 40;
3561                 }
3562                 break;
3563         }
3564 }
3565
3566 bool ieee80211_chandef_he_6ghz_oper(struct ieee80211_sub_if_data *sdata,
3567                                     const struct ieee80211_he_operation *he_oper,
3568                                     const struct ieee80211_eht_operation *eht_oper,
3569                                     struct cfg80211_chan_def *chandef)
3570 {
3571         struct ieee80211_local *local = sdata->local;
3572         struct ieee80211_supported_band *sband;
3573         enum nl80211_iftype iftype = ieee80211_vif_type_p2p(&sdata->vif);
3574         const struct ieee80211_sta_he_cap *he_cap;
3575         const struct ieee80211_sta_eht_cap *eht_cap;
3576         struct cfg80211_chan_def he_chandef = *chandef;
3577         const struct ieee80211_he_6ghz_oper *he_6ghz_oper;
3578         struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
3579         bool support_80_80, support_160, support_320;
3580         u8 he_phy_cap, eht_phy_cap;
3581         u32 freq;
3582
3583         if (chandef->chan->band != NL80211_BAND_6GHZ)
3584                 return true;
3585
3586         sband = local->hw.wiphy->bands[NL80211_BAND_6GHZ];
3587
3588         he_cap = ieee80211_get_he_iftype_cap(sband, iftype);
3589         if (!he_cap) {
3590                 sdata_info(sdata, "Missing iftype sband data/HE cap");
3591                 return false;
3592         }
3593
3594         he_phy_cap = he_cap->he_cap_elem.phy_cap_info[0];
3595         support_160 =
3596                 he_phy_cap &
3597                 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G;
3598         support_80_80 =
3599                 he_phy_cap &
3600                 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G;
3601
3602         if (!he_oper) {
3603                 sdata_info(sdata,
3604                            "HE is not advertised on (on %d MHz), expect issues\n",
3605                            chandef->chan->center_freq);
3606                 return false;
3607         }
3608
3609         eht_cap = ieee80211_get_eht_iftype_cap(sband, iftype);
3610         if (!eht_cap) {
3611                 sdata_info(sdata, "Missing iftype sband data/EHT cap");
3612                 eht_oper = NULL;
3613         }
3614
3615         he_6ghz_oper = ieee80211_he_6ghz_oper(he_oper);
3616
3617         if (!he_6ghz_oper) {
3618                 sdata_info(sdata,
3619                            "HE 6GHz operation missing (on %d MHz), expect issues\n",
3620                            chandef->chan->center_freq);
3621                 return false;
3622         }
3623
3624         /*
3625          * The EHT operation IE does not contain the primary channel so the
3626          * primary channel frequency should be taken from the 6 GHz operation
3627          * information.
3628          */
3629         freq = ieee80211_channel_to_frequency(he_6ghz_oper->primary,
3630                                               NL80211_BAND_6GHZ);
3631         he_chandef.chan = ieee80211_get_channel(sdata->local->hw.wiphy, freq);
3632
3633         switch (u8_get_bits(he_6ghz_oper->control,
3634                             IEEE80211_HE_6GHZ_OPER_CTRL_REG_INFO)) {
3635         case IEEE80211_6GHZ_CTRL_REG_LPI_AP:
3636                 bss_conf->power_type = IEEE80211_REG_LPI_AP;
3637                 break;
3638         case IEEE80211_6GHZ_CTRL_REG_SP_AP:
3639                 bss_conf->power_type = IEEE80211_REG_SP_AP;
3640                 break;
3641         default:
3642                 bss_conf->power_type = IEEE80211_REG_UNSET_AP;
3643                 break;
3644         }
3645
3646         if (!eht_oper ||
3647             !(eht_oper->params & IEEE80211_EHT_OPER_INFO_PRESENT)) {
3648                 switch (u8_get_bits(he_6ghz_oper->control,
3649                                     IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH)) {
3650                 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_20MHZ:
3651                         he_chandef.width = NL80211_CHAN_WIDTH_20;
3652                         break;
3653                 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_40MHZ:
3654                         he_chandef.width = NL80211_CHAN_WIDTH_40;
3655                         break;
3656                 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_80MHZ:
3657                         he_chandef.width = NL80211_CHAN_WIDTH_80;
3658                         break;
3659                 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_160MHZ:
3660                         he_chandef.width = NL80211_CHAN_WIDTH_80;
3661                         if (!he_6ghz_oper->ccfs1)
3662                                 break;
3663                         if (abs(he_6ghz_oper->ccfs1 - he_6ghz_oper->ccfs0) == 8) {
3664                                 if (support_160)
3665                                         he_chandef.width = NL80211_CHAN_WIDTH_160;
3666                         } else {
3667                                 if (support_80_80)
3668                                         he_chandef.width = NL80211_CHAN_WIDTH_80P80;
3669                         }
3670                         break;
3671                 }
3672
3673                 if (he_chandef.width == NL80211_CHAN_WIDTH_160) {
3674                         he_chandef.center_freq1 =
3675                                 ieee80211_channel_to_frequency(he_6ghz_oper->ccfs1,
3676                                                                NL80211_BAND_6GHZ);
3677                 } else {
3678                         he_chandef.center_freq1 =
3679                                 ieee80211_channel_to_frequency(he_6ghz_oper->ccfs0,
3680                                                                NL80211_BAND_6GHZ);
3681                         if (support_80_80 || support_160)
3682                                 he_chandef.center_freq2 =
3683                                         ieee80211_channel_to_frequency(he_6ghz_oper->ccfs1,
3684                                                                        NL80211_BAND_6GHZ);
3685                 }
3686         } else {
3687                 eht_phy_cap = eht_cap->eht_cap_elem.phy_cap_info[0];
3688                 support_320 =
3689                         eht_phy_cap & IEEE80211_EHT_PHY_CAP0_320MHZ_IN_6GHZ;
3690
3691                 ieee80211_chandef_eht_oper(eht_oper, support_160,
3692                                            support_320, &he_chandef);
3693         }
3694
3695         if (!cfg80211_chandef_valid(&he_chandef)) {
3696                 sdata_info(sdata,
3697                            "HE 6GHz operation resulted in invalid chandef: %d MHz/%d/%d MHz/%d MHz\n",
3698                            he_chandef.chan ? he_chandef.chan->center_freq : 0,
3699                            he_chandef.width,
3700                            he_chandef.center_freq1,
3701                            he_chandef.center_freq2);
3702                 return false;
3703         }
3704
3705         *chandef = he_chandef;
3706
3707         return true;
3708 }
3709
3710 bool ieee80211_chandef_s1g_oper(const struct ieee80211_s1g_oper_ie *oper,
3711                                 struct cfg80211_chan_def *chandef)
3712 {
3713         u32 oper_freq;
3714
3715         if (!oper)
3716                 return false;
3717
3718         switch (FIELD_GET(S1G_OPER_CH_WIDTH_OPER, oper->ch_width)) {
3719         case IEEE80211_S1G_CHANWIDTH_1MHZ:
3720                 chandef->width = NL80211_CHAN_WIDTH_1;
3721                 break;
3722         case IEEE80211_S1G_CHANWIDTH_2MHZ:
3723                 chandef->width = NL80211_CHAN_WIDTH_2;
3724                 break;
3725         case IEEE80211_S1G_CHANWIDTH_4MHZ:
3726                 chandef->width = NL80211_CHAN_WIDTH_4;
3727                 break;
3728         case IEEE80211_S1G_CHANWIDTH_8MHZ:
3729                 chandef->width = NL80211_CHAN_WIDTH_8;
3730                 break;
3731         case IEEE80211_S1G_CHANWIDTH_16MHZ:
3732                 chandef->width = NL80211_CHAN_WIDTH_16;
3733                 break;
3734         default:
3735                 return false;
3736         }
3737
3738         oper_freq = ieee80211_channel_to_freq_khz(oper->oper_ch,
3739                                                   NL80211_BAND_S1GHZ);
3740         chandef->center_freq1 = KHZ_TO_MHZ(oper_freq);
3741         chandef->freq1_offset = oper_freq % 1000;
3742
3743         return true;
3744 }
3745
3746 int ieee80211_parse_bitrates(enum nl80211_chan_width width,
3747                              const struct ieee80211_supported_band *sband,
3748                              const u8 *srates, int srates_len, u32 *rates)
3749 {
3750         u32 rate_flags = ieee80211_chanwidth_rate_flags(width);
3751         int shift = ieee80211_chanwidth_get_shift(width);
3752         struct ieee80211_rate *br;
3753         int brate, rate, i, j, count = 0;
3754
3755         *rates = 0;
3756
3757         for (i = 0; i < srates_len; i++) {
3758                 rate = srates[i] & 0x7f;
3759
3760                 for (j = 0; j < sband->n_bitrates; j++) {
3761                         br = &sband->bitrates[j];
3762                         if ((rate_flags & br->flags) != rate_flags)
3763                                 continue;
3764
3765                         brate = DIV_ROUND_UP(br->bitrate, (1 << shift) * 5);
3766                         if (brate == rate) {
3767                                 *rates |= BIT(j);
3768                                 count++;
3769                                 break;
3770                         }
3771                 }
3772         }
3773         return count;
3774 }
3775
3776 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
3777                             struct sk_buff *skb, bool need_basic,
3778                             enum nl80211_band band)
3779 {
3780         struct ieee80211_local *local = sdata->local;
3781         struct ieee80211_supported_band *sband;
3782         int rate, shift;
3783         u8 i, rates, *pos;
3784         u32 basic_rates = sdata->vif.bss_conf.basic_rates;
3785         u32 rate_flags;
3786
3787         shift = ieee80211_vif_get_shift(&sdata->vif);
3788         rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef);
3789         sband = local->hw.wiphy->bands[band];
3790         rates = 0;
3791         for (i = 0; i < sband->n_bitrates; i++) {
3792                 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
3793                         continue;
3794                 rates++;
3795         }
3796         if (rates > 8)
3797                 rates = 8;
3798
3799         if (skb_tailroom(skb) < rates + 2)
3800                 return -ENOMEM;
3801
3802         pos = skb_put(skb, rates + 2);
3803         *pos++ = WLAN_EID_SUPP_RATES;
3804         *pos++ = rates;
3805         for (i = 0; i < rates; i++) {
3806                 u8 basic = 0;
3807                 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
3808                         continue;
3809
3810                 if (need_basic && basic_rates & BIT(i))
3811                         basic = 0x80;
3812                 rate = DIV_ROUND_UP(sband->bitrates[i].bitrate,
3813                                     5 * (1 << shift));
3814                 *pos++ = basic | (u8) rate;
3815         }
3816
3817         return 0;
3818 }
3819
3820 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
3821                                 struct sk_buff *skb, bool need_basic,
3822                                 enum nl80211_band band)
3823 {
3824         struct ieee80211_local *local = sdata->local;
3825         struct ieee80211_supported_band *sband;
3826         int rate, shift;
3827         u8 i, exrates, *pos;
3828         u32 basic_rates = sdata->vif.bss_conf.basic_rates;
3829         u32 rate_flags;
3830
3831         rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef);
3832         shift = ieee80211_vif_get_shift(&sdata->vif);
3833
3834         sband = local->hw.wiphy->bands[band];
3835         exrates = 0;
3836         for (i = 0; i < sband->n_bitrates; i++) {
3837                 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
3838                         continue;
3839                 exrates++;
3840         }
3841
3842         if (exrates > 8)
3843                 exrates -= 8;
3844         else
3845                 exrates = 0;
3846
3847         if (skb_tailroom(skb) < exrates + 2)
3848                 return -ENOMEM;
3849
3850         if (exrates) {
3851                 pos = skb_put(skb, exrates + 2);
3852                 *pos++ = WLAN_EID_EXT_SUPP_RATES;
3853                 *pos++ = exrates;
3854                 for (i = 8; i < sband->n_bitrates; i++) {
3855                         u8 basic = 0;
3856                         if ((rate_flags & sband->bitrates[i].flags)
3857                             != rate_flags)
3858                                 continue;
3859                         if (need_basic && basic_rates & BIT(i))
3860                                 basic = 0x80;
3861                         rate = DIV_ROUND_UP(sband->bitrates[i].bitrate,
3862                                             5 * (1 << shift));
3863                         *pos++ = basic | (u8) rate;
3864                 }
3865         }
3866         return 0;
3867 }
3868
3869 int ieee80211_ave_rssi(struct ieee80211_vif *vif)
3870 {
3871         struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
3872
3873         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION))
3874                 return 0;
3875
3876         return -ewma_beacon_signal_read(&sdata->deflink.u.mgd.ave_beacon_signal);
3877 }
3878 EXPORT_SYMBOL_GPL(ieee80211_ave_rssi);
3879
3880 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs)
3881 {
3882         if (!mcs)
3883                 return 1;
3884
3885         /* TODO: consider rx_highest */
3886
3887         if (mcs->rx_mask[3])
3888                 return 4;
3889         if (mcs->rx_mask[2])
3890                 return 3;
3891         if (mcs->rx_mask[1])
3892                 return 2;
3893         return 1;
3894 }
3895
3896 /**
3897  * ieee80211_calculate_rx_timestamp - calculate timestamp in frame
3898  * @local: mac80211 hw info struct
3899  * @status: RX status
3900  * @mpdu_len: total MPDU length (including FCS)
3901  * @mpdu_offset: offset into MPDU to calculate timestamp at
3902  *
3903  * This function calculates the RX timestamp at the given MPDU offset, taking
3904  * into account what the RX timestamp was. An offset of 0 will just normalize
3905  * the timestamp to TSF at beginning of MPDU reception.
3906  */
3907 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
3908                                      struct ieee80211_rx_status *status,
3909                                      unsigned int mpdu_len,
3910                                      unsigned int mpdu_offset)
3911 {
3912         u64 ts = status->mactime;
3913         struct rate_info ri;
3914         u16 rate;
3915         u8 n_ltf;
3916
3917         if (WARN_ON(!ieee80211_have_rx_timestamp(status)))
3918                 return 0;
3919
3920         memset(&ri, 0, sizeof(ri));
3921
3922         ri.bw = status->bw;
3923
3924         /* Fill cfg80211 rate info */
3925         switch (status->encoding) {
3926         case RX_ENC_HE:
3927                 ri.flags |= RATE_INFO_FLAGS_HE_MCS;
3928                 ri.mcs = status->rate_idx;
3929                 ri.nss = status->nss;
3930                 ri.he_ru_alloc = status->he_ru;
3931                 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI)
3932                         ri.flags |= RATE_INFO_FLAGS_SHORT_GI;
3933
3934                 /*
3935                  * See P802.11ax_D6.0, section 27.3.4 for
3936                  * VHT PPDU format.
3937                  */
3938                 if (status->flag & RX_FLAG_MACTIME_PLCP_START) {
3939                         mpdu_offset += 2;
3940                         ts += 36;
3941
3942                         /*
3943                          * TODO:
3944                          * For HE MU PPDU, add the HE-SIG-B.
3945                          * For HE ER PPDU, add 8us for the HE-SIG-A.
3946                          * For HE TB PPDU, add 4us for the HE-STF.
3947                          * Add the HE-LTF durations - variable.
3948                          */
3949                 }
3950
3951                 break;
3952         case RX_ENC_HT:
3953                 ri.mcs = status->rate_idx;
3954                 ri.flags |= RATE_INFO_FLAGS_MCS;
3955                 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI)
3956                         ri.flags |= RATE_INFO_FLAGS_SHORT_GI;
3957
3958                 /*
3959                  * See P802.11REVmd_D3.0, section 19.3.2 for
3960                  * HT PPDU format.
3961                  */
3962                 if (status->flag & RX_FLAG_MACTIME_PLCP_START) {
3963                         mpdu_offset += 2;
3964                         if (status->enc_flags & RX_ENC_FLAG_HT_GF)
3965                                 ts += 24;
3966                         else
3967                                 ts += 32;
3968
3969                         /*
3970                          * Add Data HT-LTFs per streams
3971                          * TODO: add Extension HT-LTFs, 4us per LTF
3972                          */
3973                         n_ltf = ((ri.mcs >> 3) & 3) + 1;
3974                         n_ltf = n_ltf == 3 ? 4 : n_ltf;
3975                         ts += n_ltf * 4;
3976                 }
3977
3978                 break;
3979         case RX_ENC_VHT:
3980                 ri.flags |= RATE_INFO_FLAGS_VHT_MCS;
3981                 ri.mcs = status->rate_idx;
3982                 ri.nss = status->nss;
3983                 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI)
3984                         ri.flags |= RATE_INFO_FLAGS_SHORT_GI;
3985
3986                 /*
3987                  * See P802.11REVmd_D3.0, section 21.3.2 for
3988                  * VHT PPDU format.
3989                  */
3990                 if (status->flag & RX_FLAG_MACTIME_PLCP_START) {
3991                         mpdu_offset += 2;
3992                         ts += 36;
3993
3994                         /*
3995                          * Add VHT-LTFs per streams
3996                          */
3997                         n_ltf = (ri.nss != 1) && (ri.nss % 2) ?
3998                                 ri.nss + 1 : ri.nss;
3999                         ts += 4 * n_ltf;
4000                 }
4001
4002                 break;
4003         default:
4004                 WARN_ON(1);
4005                 fallthrough;
4006         case RX_ENC_LEGACY: {
4007                 struct ieee80211_supported_band *sband;
4008                 int shift = 0;
4009                 int bitrate;
4010
4011                 switch (status->bw) {
4012                 case RATE_INFO_BW_10:
4013                         shift = 1;
4014                         break;
4015                 case RATE_INFO_BW_5:
4016                         shift = 2;
4017                         break;
4018                 }
4019
4020                 sband = local->hw.wiphy->bands[status->band];
4021                 bitrate = sband->bitrates[status->rate_idx].bitrate;
4022                 ri.legacy = DIV_ROUND_UP(bitrate, (1 << shift));
4023
4024                 if (status->flag & RX_FLAG_MACTIME_PLCP_START) {
4025                         if (status->band == NL80211_BAND_5GHZ) {
4026                                 ts += 20 << shift;
4027                                 mpdu_offset += 2;
4028                         } else if (status->enc_flags & RX_ENC_FLAG_SHORTPRE) {
4029                                 ts += 96;
4030                         } else {
4031                                 ts += 192;
4032                         }
4033                 }
4034                 break;
4035                 }
4036         }
4037
4038         rate = cfg80211_calculate_bitrate(&ri);
4039         if (WARN_ONCE(!rate,
4040                       "Invalid bitrate: flags=0x%llx, idx=%d, vht_nss=%d\n",
4041                       (unsigned long long)status->flag, status->rate_idx,
4042                       status->nss))
4043                 return 0;
4044
4045         /* rewind from end of MPDU */
4046         if (status->flag & RX_FLAG_MACTIME_END)
4047                 ts -= mpdu_len * 8 * 10 / rate;
4048
4049         ts += mpdu_offset * 8 * 10 / rate;
4050
4051         return ts;
4052 }
4053
4054 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local)
4055 {
4056         struct ieee80211_sub_if_data *sdata;
4057         struct cfg80211_chan_def chandef;
4058
4059         /* for interface list, to avoid linking iflist_mtx and chanctx_mtx */
4060         lockdep_assert_wiphy(local->hw.wiphy);
4061
4062         mutex_lock(&local->mtx);
4063         list_for_each_entry(sdata, &local->interfaces, list) {
4064                 /* it might be waiting for the local->mtx, but then
4065                  * by the time it gets it, sdata->wdev.cac_started
4066                  * will no longer be true
4067                  */
4068                 cancel_delayed_work(&sdata->deflink.dfs_cac_timer_work);
4069
4070                 if (sdata->wdev.cac_started) {
4071                         chandef = sdata->vif.bss_conf.chandef;
4072                         ieee80211_link_release_channel(&sdata->deflink);
4073                         cfg80211_cac_event(sdata->dev,
4074                                            &chandef,
4075                                            NL80211_RADAR_CAC_ABORTED,
4076                                            GFP_KERNEL);
4077                 }
4078         }
4079         mutex_unlock(&local->mtx);
4080 }
4081
4082 void ieee80211_dfs_radar_detected_work(struct work_struct *work)
4083 {
4084         struct ieee80211_local *local =
4085                 container_of(work, struct ieee80211_local, radar_detected_work);
4086         struct cfg80211_chan_def chandef = local->hw.conf.chandef;
4087         struct ieee80211_chanctx *ctx;
4088         int num_chanctx = 0;
4089
4090         mutex_lock(&local->chanctx_mtx);
4091         list_for_each_entry(ctx, &local->chanctx_list, list) {
4092                 if (ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER)
4093                         continue;
4094
4095                 num_chanctx++;
4096                 chandef = ctx->conf.def;
4097         }
4098         mutex_unlock(&local->chanctx_mtx);
4099
4100         wiphy_lock(local->hw.wiphy);
4101         ieee80211_dfs_cac_cancel(local);
4102         wiphy_unlock(local->hw.wiphy);
4103
4104         if (num_chanctx > 1)
4105                 /* XXX: multi-channel is not supported yet */
4106                 WARN_ON(1);
4107         else
4108                 cfg80211_radar_event(local->hw.wiphy, &chandef, GFP_KERNEL);
4109 }
4110
4111 void ieee80211_radar_detected(struct ieee80211_hw *hw)
4112 {
4113         struct ieee80211_local *local = hw_to_local(hw);
4114
4115         trace_api_radar_detected(local);
4116
4117         schedule_work(&local->radar_detected_work);
4118 }
4119 EXPORT_SYMBOL(ieee80211_radar_detected);
4120
4121 ieee80211_conn_flags_t ieee80211_chandef_downgrade(struct cfg80211_chan_def *c)
4122 {
4123         ieee80211_conn_flags_t ret;
4124         int tmp;
4125
4126         switch (c->width) {
4127         case NL80211_CHAN_WIDTH_20:
4128                 c->width = NL80211_CHAN_WIDTH_20_NOHT;
4129                 ret = IEEE80211_CONN_DISABLE_HT | IEEE80211_CONN_DISABLE_VHT;
4130                 break;
4131         case NL80211_CHAN_WIDTH_40:
4132                 c->width = NL80211_CHAN_WIDTH_20;
4133                 c->center_freq1 = c->chan->center_freq;
4134                 ret = IEEE80211_CONN_DISABLE_40MHZ |
4135                       IEEE80211_CONN_DISABLE_VHT;
4136                 break;
4137         case NL80211_CHAN_WIDTH_80:
4138                 tmp = (30 + c->chan->center_freq - c->center_freq1)/20;
4139                 /* n_P40 */
4140                 tmp /= 2;
4141                 /* freq_P40 */
4142                 c->center_freq1 = c->center_freq1 - 20 + 40 * tmp;
4143                 c->width = NL80211_CHAN_WIDTH_40;
4144                 ret = IEEE80211_CONN_DISABLE_VHT;
4145                 break;
4146         case NL80211_CHAN_WIDTH_80P80:
4147                 c->center_freq2 = 0;
4148                 c->width = NL80211_CHAN_WIDTH_80;
4149                 ret = IEEE80211_CONN_DISABLE_80P80MHZ |
4150                       IEEE80211_CONN_DISABLE_160MHZ;
4151                 break;
4152         case NL80211_CHAN_WIDTH_160:
4153                 /* n_P20 */
4154                 tmp = (70 + c->chan->center_freq - c->center_freq1)/20;
4155                 /* n_P80 */
4156                 tmp /= 4;
4157                 c->center_freq1 = c->center_freq1 - 40 + 80 * tmp;
4158                 c->width = NL80211_CHAN_WIDTH_80;
4159                 ret = IEEE80211_CONN_DISABLE_80P80MHZ |
4160                       IEEE80211_CONN_DISABLE_160MHZ;
4161                 break;
4162         case NL80211_CHAN_WIDTH_320:
4163                 /* n_P20 */
4164                 tmp = (150 + c->chan->center_freq - c->center_freq1) / 20;
4165                 /* n_P160 */
4166                 tmp /= 8;
4167                 c->center_freq1 = c->center_freq1 - 80 + 160 * tmp;
4168                 c->width = NL80211_CHAN_WIDTH_160;
4169                 ret = IEEE80211_CONN_DISABLE_320MHZ;
4170                 break;
4171         default:
4172         case NL80211_CHAN_WIDTH_20_NOHT:
4173                 WARN_ON_ONCE(1);
4174                 c->width = NL80211_CHAN_WIDTH_20_NOHT;
4175                 ret = IEEE80211_CONN_DISABLE_HT | IEEE80211_CONN_DISABLE_VHT;
4176                 break;
4177         case NL80211_CHAN_WIDTH_1:
4178         case NL80211_CHAN_WIDTH_2:
4179         case NL80211_CHAN_WIDTH_4:
4180         case NL80211_CHAN_WIDTH_8:
4181         case NL80211_CHAN_WIDTH_16:
4182         case NL80211_CHAN_WIDTH_5:
4183         case NL80211_CHAN_WIDTH_10:
4184                 WARN_ON_ONCE(1);
4185                 /* keep c->width */
4186                 ret = IEEE80211_CONN_DISABLE_HT | IEEE80211_CONN_DISABLE_VHT;
4187                 break;
4188         }
4189
4190         WARN_ON_ONCE(!cfg80211_chandef_valid(c));
4191
4192         return ret;
4193 }
4194
4195 /*
4196  * Returns true if smps_mode_new is strictly more restrictive than
4197  * smps_mode_old.
4198  */
4199 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old,
4200                                    enum ieee80211_smps_mode smps_mode_new)
4201 {
4202         if (WARN_ON_ONCE(smps_mode_old == IEEE80211_SMPS_AUTOMATIC ||
4203                          smps_mode_new == IEEE80211_SMPS_AUTOMATIC))
4204                 return false;
4205
4206         switch (smps_mode_old) {
4207         case IEEE80211_SMPS_STATIC:
4208                 return false;
4209         case IEEE80211_SMPS_DYNAMIC:
4210                 return smps_mode_new == IEEE80211_SMPS_STATIC;
4211         case IEEE80211_SMPS_OFF:
4212                 return smps_mode_new != IEEE80211_SMPS_OFF;
4213         default:
4214                 WARN_ON(1);
4215         }
4216
4217         return false;
4218 }
4219
4220 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata,
4221                               struct cfg80211_csa_settings *csa_settings)
4222 {
4223         struct sk_buff *skb;
4224         struct ieee80211_mgmt *mgmt;
4225         struct ieee80211_local *local = sdata->local;
4226         int freq;
4227         int hdr_len = offsetofend(struct ieee80211_mgmt,
4228                                   u.action.u.chan_switch);
4229         u8 *pos;
4230
4231         if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
4232             sdata->vif.type != NL80211_IFTYPE_MESH_POINT)
4233                 return -EOPNOTSUPP;
4234
4235         skb = dev_alloc_skb(local->tx_headroom + hdr_len +
4236                             5 + /* channel switch announcement element */
4237                             3 + /* secondary channel offset element */
4238                             5 + /* wide bandwidth channel switch announcement */
4239                             8); /* mesh channel switch parameters element */
4240         if (!skb)
4241                 return -ENOMEM;
4242
4243         skb_reserve(skb, local->tx_headroom);
4244         mgmt = skb_put_zero(skb, hdr_len);
4245         mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
4246                                           IEEE80211_STYPE_ACTION);
4247
4248         eth_broadcast_addr(mgmt->da);
4249         memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
4250         if (ieee80211_vif_is_mesh(&sdata->vif)) {
4251                 memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN);
4252         } else {
4253                 struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
4254                 memcpy(mgmt->bssid, ifibss->bssid, ETH_ALEN);
4255         }
4256         mgmt->u.action.category = WLAN_CATEGORY_SPECTRUM_MGMT;
4257         mgmt->u.action.u.chan_switch.action_code = WLAN_ACTION_SPCT_CHL_SWITCH;
4258         pos = skb_put(skb, 5);
4259         *pos++ = WLAN_EID_CHANNEL_SWITCH;                       /* EID */
4260         *pos++ = 3;                                             /* IE length */
4261         *pos++ = csa_settings->block_tx ? 1 : 0;                /* CSA mode */
4262         freq = csa_settings->chandef.chan->center_freq;
4263         *pos++ = ieee80211_frequency_to_channel(freq);          /* channel */
4264         *pos++ = csa_settings->count;                           /* count */
4265
4266         if (csa_settings->chandef.width == NL80211_CHAN_WIDTH_40) {
4267                 enum nl80211_channel_type ch_type;
4268
4269                 skb_put(skb, 3);
4270                 *pos++ = WLAN_EID_SECONDARY_CHANNEL_OFFSET;     /* EID */
4271                 *pos++ = 1;                                     /* IE length */
4272                 ch_type = cfg80211_get_chandef_type(&csa_settings->chandef);
4273                 if (ch_type == NL80211_CHAN_HT40PLUS)
4274                         *pos++ = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
4275                 else
4276                         *pos++ = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
4277         }
4278
4279         if (ieee80211_vif_is_mesh(&sdata->vif)) {
4280                 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
4281
4282                 skb_put(skb, 8);
4283                 *pos++ = WLAN_EID_CHAN_SWITCH_PARAM;            /* EID */
4284                 *pos++ = 6;                                     /* IE length */
4285                 *pos++ = sdata->u.mesh.mshcfg.dot11MeshTTL;     /* Mesh TTL */
4286                 *pos = 0x00;    /* Mesh Flag: Tx Restrict, Initiator, Reason */
4287                 *pos |= WLAN_EID_CHAN_SWITCH_PARAM_INITIATOR;
4288                 *pos++ |= csa_settings->block_tx ?
4289                           WLAN_EID_CHAN_SWITCH_PARAM_TX_RESTRICT : 0x00;
4290                 put_unaligned_le16(WLAN_REASON_MESH_CHAN, pos); /* Reason Cd */
4291                 pos += 2;
4292                 put_unaligned_le16(ifmsh->pre_value, pos);/* Precedence Value */
4293                 pos += 2;
4294         }
4295
4296         if (csa_settings->chandef.width == NL80211_CHAN_WIDTH_80 ||
4297             csa_settings->chandef.width == NL80211_CHAN_WIDTH_80P80 ||
4298             csa_settings->chandef.width == NL80211_CHAN_WIDTH_160) {
4299                 skb_put(skb, 5);
4300                 ieee80211_ie_build_wide_bw_cs(pos, &csa_settings->chandef);
4301         }
4302
4303         ieee80211_tx_skb(sdata, skb);
4304         return 0;
4305 }
4306
4307 static bool
4308 ieee80211_extend_noa_desc(struct ieee80211_noa_data *data, u32 tsf, int i)
4309 {
4310         s32 end = data->desc[i].start + data->desc[i].duration - (tsf + 1);
4311         int skip;
4312
4313         if (end > 0)
4314                 return false;
4315
4316         /* One shot NOA  */
4317         if (data->count[i] == 1)
4318                 return false;
4319
4320         if (data->desc[i].interval == 0)
4321                 return false;
4322
4323         /* End time is in the past, check for repetitions */
4324         skip = DIV_ROUND_UP(-end, data->desc[i].interval);
4325         if (data->count[i] < 255) {
4326                 if (data->count[i] <= skip) {
4327                         data->count[i] = 0;
4328                         return false;
4329                 }
4330
4331                 data->count[i] -= skip;
4332         }
4333
4334         data->desc[i].start += skip * data->desc[i].interval;
4335
4336         return true;
4337 }
4338
4339 static bool
4340 ieee80211_extend_absent_time(struct ieee80211_noa_data *data, u32 tsf,
4341                              s32 *offset)
4342 {
4343         bool ret = false;
4344         int i;
4345
4346         for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) {
4347                 s32 cur;
4348
4349                 if (!data->count[i])
4350                         continue;
4351
4352                 if (ieee80211_extend_noa_desc(data, tsf + *offset, i))
4353                         ret = true;
4354
4355                 cur = data->desc[i].start - tsf;
4356                 if (cur > *offset)
4357                         continue;
4358
4359                 cur = data->desc[i].start + data->desc[i].duration - tsf;
4360                 if (cur > *offset)
4361                         *offset = cur;
4362         }
4363
4364         return ret;
4365 }
4366
4367 static u32
4368 ieee80211_get_noa_absent_time(struct ieee80211_noa_data *data, u32 tsf)
4369 {
4370         s32 offset = 0;
4371         int tries = 0;
4372         /*
4373          * arbitrary limit, used to avoid infinite loops when combined NoA
4374          * descriptors cover the full time period.
4375          */
4376         int max_tries = 5;
4377
4378         ieee80211_extend_absent_time(data, tsf, &offset);
4379         do {
4380                 if (!ieee80211_extend_absent_time(data, tsf, &offset))
4381                         break;
4382
4383                 tries++;
4384         } while (tries < max_tries);
4385
4386         return offset;
4387 }
4388
4389 void ieee80211_update_p2p_noa(struct ieee80211_noa_data *data, u32 tsf)
4390 {
4391         u32 next_offset = BIT(31) - 1;
4392         int i;
4393
4394         data->absent = 0;
4395         data->has_next_tsf = false;
4396         for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) {
4397                 s32 start;
4398
4399                 if (!data->count[i])
4400                         continue;
4401
4402                 ieee80211_extend_noa_desc(data, tsf, i);
4403                 start = data->desc[i].start - tsf;
4404                 if (start <= 0)
4405                         data->absent |= BIT(i);
4406
4407                 if (next_offset > start)
4408                         next_offset = start;
4409
4410                 data->has_next_tsf = true;
4411         }
4412
4413         if (data->absent)
4414                 next_offset = ieee80211_get_noa_absent_time(data, tsf);
4415
4416         data->next_tsf = tsf + next_offset;
4417 }
4418 EXPORT_SYMBOL(ieee80211_update_p2p_noa);
4419
4420 int ieee80211_parse_p2p_noa(const struct ieee80211_p2p_noa_attr *attr,
4421                             struct ieee80211_noa_data *data, u32 tsf)
4422 {
4423         int ret = 0;
4424         int i;
4425
4426         memset(data, 0, sizeof(*data));
4427
4428         for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) {
4429                 const struct ieee80211_p2p_noa_desc *desc = &attr->desc[i];
4430
4431                 if (!desc->count || !desc->duration)
4432                         continue;
4433
4434                 data->count[i] = desc->count;
4435                 data->desc[i].start = le32_to_cpu(desc->start_time);
4436                 data->desc[i].duration = le32_to_cpu(desc->duration);
4437                 data->desc[i].interval = le32_to_cpu(desc->interval);
4438
4439                 if (data->count[i] > 1 &&
4440                     data->desc[i].interval < data->desc[i].duration)
4441                         continue;
4442
4443                 ieee80211_extend_noa_desc(data, tsf, i);
4444                 ret++;
4445         }
4446
4447         if (ret)
4448                 ieee80211_update_p2p_noa(data, tsf);
4449
4450         return ret;
4451 }
4452 EXPORT_SYMBOL(ieee80211_parse_p2p_noa);
4453
4454 void ieee80211_recalc_dtim(struct ieee80211_local *local,
4455                            struct ieee80211_sub_if_data *sdata)
4456 {
4457         u64 tsf = drv_get_tsf(local, sdata);
4458         u64 dtim_count = 0;
4459         u16 beacon_int = sdata->vif.bss_conf.beacon_int * 1024;
4460         u8 dtim_period = sdata->vif.bss_conf.dtim_period;
4461         struct ps_data *ps;
4462         u8 bcns_from_dtim;
4463
4464         if (tsf == -1ULL || !beacon_int || !dtim_period)
4465                 return;
4466
4467         if (sdata->vif.type == NL80211_IFTYPE_AP ||
4468             sdata->vif.type == NL80211_IFTYPE_AP_VLAN) {
4469                 if (!sdata->bss)
4470                         return;
4471
4472                 ps = &sdata->bss->ps;
4473         } else if (ieee80211_vif_is_mesh(&sdata->vif)) {
4474                 ps = &sdata->u.mesh.ps;
4475         } else {
4476                 return;
4477         }
4478
4479         /*
4480          * actually finds last dtim_count, mac80211 will update in
4481          * __beacon_add_tim().
4482          * dtim_count = dtim_period - (tsf / bcn_int) % dtim_period
4483          */
4484         do_div(tsf, beacon_int);
4485         bcns_from_dtim = do_div(tsf, dtim_period);
4486         /* just had a DTIM */
4487         if (!bcns_from_dtim)
4488                 dtim_count = 0;
4489         else
4490                 dtim_count = dtim_period - bcns_from_dtim;
4491
4492         ps->dtim_count = dtim_count;
4493 }
4494
4495 static u8 ieee80211_chanctx_radar_detect(struct ieee80211_local *local,
4496                                          struct ieee80211_chanctx *ctx)
4497 {
4498         struct ieee80211_link_data *link;
4499         u8 radar_detect = 0;
4500
4501         lockdep_assert_held(&local->chanctx_mtx);
4502
4503         if (WARN_ON(ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED))
4504                 return 0;
4505
4506         list_for_each_entry(link, &ctx->reserved_links, reserved_chanctx_list)
4507                 if (link->reserved_radar_required)
4508                         radar_detect |= BIT(link->reserved_chandef.width);
4509
4510         /*
4511          * An in-place reservation context should not have any assigned vifs
4512          * until it replaces the other context.
4513          */
4514         WARN_ON(ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER &&
4515                 !list_empty(&ctx->assigned_links));
4516
4517         list_for_each_entry(link, &ctx->assigned_links, assigned_chanctx_list) {
4518                 if (!link->radar_required)
4519                         continue;
4520
4521                 radar_detect |=
4522                         BIT(link->conf->chandef.width);
4523         }
4524
4525         return radar_detect;
4526 }
4527
4528 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata,
4529                                  const struct cfg80211_chan_def *chandef,
4530                                  enum ieee80211_chanctx_mode chanmode,
4531                                  u8 radar_detect)
4532 {
4533         struct ieee80211_local *local = sdata->local;
4534         struct ieee80211_sub_if_data *sdata_iter;
4535         enum nl80211_iftype iftype = sdata->wdev.iftype;
4536         struct ieee80211_chanctx *ctx;
4537         int total = 1;
4538         struct iface_combination_params params = {
4539                 .radar_detect = radar_detect,
4540         };
4541
4542         lockdep_assert_held(&local->chanctx_mtx);
4543
4544         if (WARN_ON(hweight32(radar_detect) > 1))
4545                 return -EINVAL;
4546
4547         if (WARN_ON(chandef && chanmode == IEEE80211_CHANCTX_SHARED &&
4548                     !chandef->chan))
4549                 return -EINVAL;
4550
4551         if (WARN_ON(iftype >= NUM_NL80211_IFTYPES))
4552                 return -EINVAL;
4553
4554         if (sdata->vif.type == NL80211_IFTYPE_AP ||
4555             sdata->vif.type == NL80211_IFTYPE_MESH_POINT) {
4556                 /*
4557                  * always passing this is harmless, since it'll be the
4558                  * same value that cfg80211 finds if it finds the same
4559                  * interface ... and that's always allowed
4560                  */
4561                 params.new_beacon_int = sdata->vif.bss_conf.beacon_int;
4562         }
4563
4564         /* Always allow software iftypes */
4565         if (cfg80211_iftype_allowed(local->hw.wiphy, iftype, 0, 1)) {
4566                 if (radar_detect)
4567                         return -EINVAL;
4568                 return 0;
4569         }
4570
4571         if (chandef)
4572                 params.num_different_channels = 1;
4573
4574         if (iftype != NL80211_IFTYPE_UNSPECIFIED)
4575                 params.iftype_num[iftype] = 1;
4576
4577         list_for_each_entry(ctx, &local->chanctx_list, list) {
4578                 if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED)
4579                         continue;
4580                 params.radar_detect |=
4581                         ieee80211_chanctx_radar_detect(local, ctx);
4582                 if (ctx->mode == IEEE80211_CHANCTX_EXCLUSIVE) {
4583                         params.num_different_channels++;
4584                         continue;
4585                 }
4586                 if (chandef && chanmode == IEEE80211_CHANCTX_SHARED &&
4587                     cfg80211_chandef_compatible(chandef,
4588                                                 &ctx->conf.def))
4589                         continue;
4590                 params.num_different_channels++;
4591         }
4592
4593         list_for_each_entry_rcu(sdata_iter, &local->interfaces, list) {
4594                 struct wireless_dev *wdev_iter;
4595
4596                 wdev_iter = &sdata_iter->wdev;
4597
4598                 if (sdata_iter == sdata ||
4599                     !ieee80211_sdata_running(sdata_iter) ||
4600                     cfg80211_iftype_allowed(local->hw.wiphy,
4601                                             wdev_iter->iftype, 0, 1))
4602                         continue;
4603
4604                 params.iftype_num[wdev_iter->iftype]++;
4605                 total++;
4606         }
4607
4608         if (total == 1 && !params.radar_detect)
4609                 return 0;
4610
4611         return cfg80211_check_combinations(local->hw.wiphy, &params);
4612 }
4613
4614 static void
4615 ieee80211_iter_max_chans(const struct ieee80211_iface_combination *c,
4616                          void *data)
4617 {
4618         u32 *max_num_different_channels = data;
4619
4620         *max_num_different_channels = max(*max_num_different_channels,
4621                                           c->num_different_channels);
4622 }
4623
4624 int ieee80211_max_num_channels(struct ieee80211_local *local)
4625 {
4626         struct ieee80211_sub_if_data *sdata;
4627         struct ieee80211_chanctx *ctx;
4628         u32 max_num_different_channels = 1;
4629         int err;
4630         struct iface_combination_params params = {0};
4631
4632         lockdep_assert_held(&local->chanctx_mtx);
4633
4634         list_for_each_entry(ctx, &local->chanctx_list, list) {
4635                 if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED)
4636                         continue;
4637
4638                 params.num_different_channels++;
4639
4640                 params.radar_detect |=
4641                         ieee80211_chanctx_radar_detect(local, ctx);
4642         }
4643
4644         list_for_each_entry_rcu(sdata, &local->interfaces, list)
4645                 params.iftype_num[sdata->wdev.iftype]++;
4646
4647         err = cfg80211_iter_combinations(local->hw.wiphy, &params,
4648                                          ieee80211_iter_max_chans,
4649                                          &max_num_different_channels);
4650         if (err < 0)
4651                 return err;
4652
4653         return max_num_different_channels;
4654 }
4655
4656 void ieee80211_add_s1g_capab_ie(struct ieee80211_sub_if_data *sdata,
4657                                 struct ieee80211_sta_s1g_cap *caps,
4658                                 struct sk_buff *skb)
4659 {
4660         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4661         struct ieee80211_s1g_cap s1g_capab;
4662         u8 *pos;
4663         int i;
4664
4665         if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
4666                 return;
4667
4668         if (!caps->s1g)
4669                 return;
4670
4671         memcpy(s1g_capab.capab_info, caps->cap, sizeof(caps->cap));
4672         memcpy(s1g_capab.supp_mcs_nss, caps->nss_mcs, sizeof(caps->nss_mcs));
4673
4674         /* override the capability info */
4675         for (i = 0; i < sizeof(ifmgd->s1g_capa.capab_info); i++) {
4676                 u8 mask = ifmgd->s1g_capa_mask.capab_info[i];
4677
4678                 s1g_capab.capab_info[i] &= ~mask;
4679                 s1g_capab.capab_info[i] |= ifmgd->s1g_capa.capab_info[i] & mask;
4680         }
4681
4682         /* then MCS and NSS set */
4683         for (i = 0; i < sizeof(ifmgd->s1g_capa.supp_mcs_nss); i++) {
4684                 u8 mask = ifmgd->s1g_capa_mask.supp_mcs_nss[i];
4685
4686                 s1g_capab.supp_mcs_nss[i] &= ~mask;
4687                 s1g_capab.supp_mcs_nss[i] |=
4688                         ifmgd->s1g_capa.supp_mcs_nss[i] & mask;
4689         }
4690
4691         pos = skb_put(skb, 2 + sizeof(s1g_capab));
4692         *pos++ = WLAN_EID_S1G_CAPABILITIES;
4693         *pos++ = sizeof(s1g_capab);
4694
4695         memcpy(pos, &s1g_capab, sizeof(s1g_capab));
4696 }
4697
4698 void ieee80211_add_aid_request_ie(struct ieee80211_sub_if_data *sdata,
4699                                   struct sk_buff *skb)
4700 {
4701         u8 *pos = skb_put(skb, 3);
4702
4703         *pos++ = WLAN_EID_AID_REQUEST;
4704         *pos++ = 1;
4705         *pos++ = 0;
4706 }
4707
4708 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo)
4709 {
4710         *buf++ = WLAN_EID_VENDOR_SPECIFIC;
4711         *buf++ = 7; /* len */
4712         *buf++ = 0x00; /* Microsoft OUI 00:50:F2 */
4713         *buf++ = 0x50;
4714         *buf++ = 0xf2;
4715         *buf++ = 2; /* WME */
4716         *buf++ = 0; /* WME info */
4717         *buf++ = 1; /* WME ver */
4718         *buf++ = qosinfo; /* U-APSD no in use */
4719
4720         return buf;
4721 }
4722
4723 void ieee80211_txq_get_depth(struct ieee80211_txq *txq,
4724                              unsigned long *frame_cnt,
4725                              unsigned long *byte_cnt)
4726 {
4727         struct txq_info *txqi = to_txq_info(txq);
4728         u32 frag_cnt = 0, frag_bytes = 0;
4729         struct sk_buff *skb;
4730
4731         skb_queue_walk(&txqi->frags, skb) {
4732                 frag_cnt++;
4733                 frag_bytes += skb->len;
4734         }
4735
4736         if (frame_cnt)
4737                 *frame_cnt = txqi->tin.backlog_packets + frag_cnt;
4738
4739         if (byte_cnt)
4740                 *byte_cnt = txqi->tin.backlog_bytes + frag_bytes;
4741 }
4742 EXPORT_SYMBOL(ieee80211_txq_get_depth);
4743
4744 const u8 ieee80211_ac_to_qos_mask[IEEE80211_NUM_ACS] = {
4745         IEEE80211_WMM_IE_STA_QOSINFO_AC_VO,
4746         IEEE80211_WMM_IE_STA_QOSINFO_AC_VI,
4747         IEEE80211_WMM_IE_STA_QOSINFO_AC_BE,
4748         IEEE80211_WMM_IE_STA_QOSINFO_AC_BK
4749 };
4750
4751 u16 ieee80211_encode_usf(int listen_interval)
4752 {
4753         static const int listen_int_usf[] = { 1, 10, 1000, 10000 };
4754         u16 ui, usf = 0;
4755
4756         /* find greatest USF */
4757         while (usf < IEEE80211_MAX_USF) {
4758                 if (listen_interval % listen_int_usf[usf + 1])
4759                         break;
4760                 usf += 1;
4761         }
4762         ui = listen_interval / listen_int_usf[usf];
4763
4764         /* error if there is a remainder. Should've been checked by user */
4765         WARN_ON_ONCE(ui > IEEE80211_MAX_UI);
4766         listen_interval = FIELD_PREP(LISTEN_INT_USF, usf) |
4767                           FIELD_PREP(LISTEN_INT_UI, ui);
4768
4769         return (u16) listen_interval;
4770 }
4771
4772 u8 ieee80211_ie_len_eht_cap(struct ieee80211_sub_if_data *sdata, u8 iftype)
4773 {
4774         const struct ieee80211_sta_he_cap *he_cap;
4775         const struct ieee80211_sta_eht_cap *eht_cap;
4776         struct ieee80211_supported_band *sband;
4777         bool is_ap;
4778         u8 n;
4779
4780         sband = ieee80211_get_sband(sdata);
4781         if (!sband)
4782                 return 0;
4783
4784         he_cap = ieee80211_get_he_iftype_cap(sband, iftype);
4785         eht_cap = ieee80211_get_eht_iftype_cap(sband, iftype);
4786         if (!he_cap || !eht_cap)
4787                 return 0;
4788
4789         is_ap = iftype == NL80211_IFTYPE_AP ||
4790                 iftype == NL80211_IFTYPE_P2P_GO;
4791
4792         n = ieee80211_eht_mcs_nss_size(&he_cap->he_cap_elem,
4793                                        &eht_cap->eht_cap_elem,
4794                                        is_ap);
4795         return 2 + 1 +
4796                sizeof(he_cap->he_cap_elem) + n +
4797                ieee80211_eht_ppe_size(eht_cap->eht_ppe_thres[0],
4798                                       eht_cap->eht_cap_elem.phy_cap_info);
4799         return 0;
4800 }
4801
4802 u8 *ieee80211_ie_build_eht_cap(u8 *pos,
4803                                const struct ieee80211_sta_he_cap *he_cap,
4804                                const struct ieee80211_sta_eht_cap *eht_cap,
4805                                u8 *end,
4806                                bool for_ap)
4807 {
4808         u8 mcs_nss_len, ppet_len;
4809         u8 ie_len;
4810         u8 *orig_pos = pos;
4811
4812         /* Make sure we have place for the IE */
4813         if (!he_cap || !eht_cap)
4814                 return orig_pos;
4815
4816         mcs_nss_len = ieee80211_eht_mcs_nss_size(&he_cap->he_cap_elem,
4817                                                  &eht_cap->eht_cap_elem,
4818                                                  for_ap);
4819         ppet_len = ieee80211_eht_ppe_size(eht_cap->eht_ppe_thres[0],
4820                                           eht_cap->eht_cap_elem.phy_cap_info);
4821
4822         ie_len = 2 + 1 + sizeof(eht_cap->eht_cap_elem) + mcs_nss_len + ppet_len;
4823         if ((end - pos) < ie_len)
4824                 return orig_pos;
4825
4826         *pos++ = WLAN_EID_EXTENSION;
4827         *pos++ = ie_len - 2;
4828         *pos++ = WLAN_EID_EXT_EHT_CAPABILITY;
4829
4830         /* Fixed data */
4831         memcpy(pos, &eht_cap->eht_cap_elem, sizeof(eht_cap->eht_cap_elem));
4832         pos += sizeof(eht_cap->eht_cap_elem);
4833
4834         memcpy(pos, &eht_cap->eht_mcs_nss_supp, mcs_nss_len);
4835         pos += mcs_nss_len;
4836
4837         if (ppet_len) {
4838                 memcpy(pos, &eht_cap->eht_ppe_thres, ppet_len);
4839                 pos += ppet_len;
4840         }
4841
4842         return pos;
4843 }
4844
4845 void ieee80211_fragment_element(struct sk_buff *skb, u8 *len_pos)
4846 {
4847         unsigned int elem_len;
4848
4849         if (!len_pos)
4850                 return;
4851
4852         elem_len = skb->data + skb->len - len_pos - 1;
4853
4854         while (elem_len > 255) {
4855                 /* this one is 255 */
4856                 *len_pos = 255;
4857                 /* remaining data gets smaller */
4858                 elem_len -= 255;
4859                 /* make space for the fragment ID/len in SKB */
4860                 skb_put(skb, 2);
4861                 /* shift back the remaining data to place fragment ID/len */
4862                 memmove(len_pos + 255 + 3, len_pos + 255 + 1, elem_len);
4863                 /* place the fragment ID */
4864                 len_pos += 255 + 1;
4865                 *len_pos = WLAN_EID_FRAGMENT;
4866                 /* and point to fragment length to update later */
4867                 len_pos++;
4868         }
4869
4870         *len_pos = elem_len;
4871 }