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) 2018-2021 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->flags & IEEE80211_SDATA_OPERATING_GMODE)
 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->flags & IEEE80211_SDATA_OPERATING_GMODE)
 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->flags & IEEE80211_SDATA_OPERATING_GMODE)
 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         if (!test_bit(SDATA_STATE_RUNNING, &sdata->state))
 305                 goto out;
 306
 307         if (sdata->vif.type == NL80211_IFTYPE_AP)
 308                 ps = &sdata->bss->ps;
 309
 310         sdata->vif.txqs_stopped[ac] = false;
 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 ieee80211_parse_extension_element(u32 *crc,
 958                                               const struct element *elem,
 959                                               struct ieee802_11_elems *elems)
 960 {
 961         const void *data = elem->data + 1;
 962         u8 len;
 963
 964         if (!elem->datalen)
 965                 return;
 966
 967         len = elem->datalen - 1;
 968
 969         switch (elem->data[0]) {
 970         case WLAN_EID_EXT_HE_MU_EDCA:
 971                 if (len >= sizeof(*elems->mu_edca_param_set)) {
 972                         elems->mu_edca_param_set = data;
 973                         if (crc)
 974                                 *crc = crc32_be(*crc, (void *)elem,
 975                                                 elem->datalen + 2);
 976                 }
 977                 break;
 978         case WLAN_EID_EXT_HE_CAPABILITY:
 979                 if (ieee80211_he_capa_size_ok(data, len)) {
 980                         elems->he_cap = data;
 981                         elems->he_cap_len = len;
 982                 }
 983                 break;
 984         case WLAN_EID_EXT_HE_OPERATION:
 985                 if (len >= sizeof(*elems->he_operation) &&
 986                     len >= ieee80211_he_oper_size(data) - 1) {
 987                         if (crc)
 988                                 *crc = crc32_be(*crc, (void *)elem,
 989                                                 elem->datalen + 2);
 990                         elems->he_operation = data;
 991                 }
 992                 break;
 993         case WLAN_EID_EXT_UORA:
 994                 if (len >= 1)
 995                         elems->uora_element = data;
 996                 break;
 997         case WLAN_EID_EXT_MAX_CHANNEL_SWITCH_TIME:
 998                 if (len == 3)
 999                         elems->max_channel_switch_time = data;
1000                 break;
1001         case WLAN_EID_EXT_MULTIPLE_BSSID_CONFIGURATION:
1002                 if (len >= sizeof(*elems->mbssid_config_ie))
1003                         elems->mbssid_config_ie = data;
1004                 break;
1005         case WLAN_EID_EXT_HE_SPR:
1006                 if (len >= sizeof(*elems->he_spr) &&
1007                     len >= ieee80211_he_spr_size(data))
1008                         elems->he_spr = data;
1009                 break;
1010         case WLAN_EID_EXT_HE_6GHZ_CAPA:
1011                 if (len >= sizeof(*elems->he_6ghz_capa))
1012                         elems->he_6ghz_capa = data;
1013                 break;
1014         case WLAN_EID_EXT_EHT_CAPABILITY:
1015                 if (ieee80211_eht_capa_size_ok(elems->he_cap,
1016                                                data, len)) {
1017                         elems->eht_cap = data;
1018                         elems->eht_cap_len = len;
1019                 }
1020                 break;
1021         case WLAN_EID_EXT_EHT_OPERATION:
1022                 if (ieee80211_eht_oper_size_ok(data, len))
1023                         elems->eht_operation = data;
1024                 break;
1025         }
1026 }
1027
1028 static u32
1029 _ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
1030                             struct ieee802_11_elems *elems,
1031                             u64 filter, u32 crc,
1032                             const struct element *check_inherit)
1033 {
1034         const struct element *elem;
1035         bool calc_crc = filter != 0;
1036         DECLARE_BITMAP(seen_elems, 256);
1037         const u8 *ie;
1038
1039         bitmap_zero(seen_elems, 256);
1040
1041         for_each_element(elem, start, len) {
1042                 bool elem_parse_failed;
1043                 u8 id = elem->id;
1044                 u8 elen = elem->datalen;
1045                 const u8 *pos = elem->data;
1046
1047                 if (check_inherit &&
1048                     !cfg80211_is_element_inherited(elem,
1049                                                    check_inherit))
1050                         continue;
1051
1052                 switch (id) {
1053                 case WLAN_EID_SSID:
1054                 case WLAN_EID_SUPP_RATES:
1055                 case WLAN_EID_FH_PARAMS:
1056                 case WLAN_EID_DS_PARAMS:
1057                 case WLAN_EID_CF_PARAMS:
1058                 case WLAN_EID_TIM:
1059                 case WLAN_EID_IBSS_PARAMS:
1060                 case WLAN_EID_CHALLENGE:
1061                 case WLAN_EID_RSN:
1062                 case WLAN_EID_ERP_INFO:
1063                 case WLAN_EID_EXT_SUPP_RATES:
1064                 case WLAN_EID_HT_CAPABILITY:
1065                 case WLAN_EID_HT_OPERATION:
1066                 case WLAN_EID_VHT_CAPABILITY:
1067                 case WLAN_EID_VHT_OPERATION:
1068                 case WLAN_EID_MESH_ID:
1069                 case WLAN_EID_MESH_CONFIG:
1070                 case WLAN_EID_PEER_MGMT:
1071                 case WLAN_EID_PREQ:
1072                 case WLAN_EID_PREP:
1073                 case WLAN_EID_PERR:
1074                 case WLAN_EID_RANN:
1075                 case WLAN_EID_CHANNEL_SWITCH:
1076                 case WLAN_EID_EXT_CHANSWITCH_ANN:
1077                 case WLAN_EID_COUNTRY:
1078                 case WLAN_EID_PWR_CONSTRAINT:
1079                 case WLAN_EID_TIMEOUT_INTERVAL:
1080                 case WLAN_EID_SECONDARY_CHANNEL_OFFSET:
1081                 case WLAN_EID_WIDE_BW_CHANNEL_SWITCH:
1082                 case WLAN_EID_CHAN_SWITCH_PARAM:
1083                 case WLAN_EID_EXT_CAPABILITY:
1084                 case WLAN_EID_CHAN_SWITCH_TIMING:
1085                 case WLAN_EID_LINK_ID:
1086                 case WLAN_EID_BSS_MAX_IDLE_PERIOD:
1087                 case WLAN_EID_RSNX:
1088                 case WLAN_EID_S1G_BCN_COMPAT:
1089                 case WLAN_EID_S1G_CAPABILITIES:
1090                 case WLAN_EID_S1G_OPERATION:
1091                 case WLAN_EID_AID_RESPONSE:
1092                 case WLAN_EID_S1G_SHORT_BCN_INTERVAL:
1093                 /*
1094                  * not listing WLAN_EID_CHANNEL_SWITCH_WRAPPER -- it seems possible
1095                  * that if the content gets bigger it might be needed more than once
1096                  */
1097                         if (test_bit(id, seen_elems)) {
1098                                 elems->parse_error = true;
1099                                 continue;
1100                         }
1101                         break;
1102                 }
1103
1104                 if (calc_crc && id < 64 && (filter & (1ULL << id)))
1105                         crc = crc32_be(crc, pos - 2, elen + 2);
1106
1107                 elem_parse_failed = false;
1108
1109                 switch (id) {
1110                 case WLAN_EID_LINK_ID:
1111                         if (elen + 2 < sizeof(struct ieee80211_tdls_lnkie)) {
1112                                 elem_parse_failed = true;
1113                                 break;
1114                         }
1115                         elems->lnk_id = (void *)(pos - 2);
1116                         break;
1117                 case WLAN_EID_CHAN_SWITCH_TIMING:
1118                         if (elen < sizeof(struct ieee80211_ch_switch_timing)) {
1119                                 elem_parse_failed = true;
1120                                 break;
1121                         }
1122                         elems->ch_sw_timing = (void *)pos;
1123                         break;
1124                 case WLAN_EID_EXT_CAPABILITY:
1125                         elems->ext_capab = pos;
1126                         elems->ext_capab_len = elen;
1127                         break;
1128                 case WLAN_EID_SSID:
1129                         elems->ssid = pos;
1130                         elems->ssid_len = elen;
1131                         break;
1132                 case WLAN_EID_SUPP_RATES:
1133                         elems->supp_rates = pos;
1134                         elems->supp_rates_len = elen;
1135                         break;
1136                 case WLAN_EID_DS_PARAMS:
1137                         if (elen >= 1)
1138                                 elems->ds_params = pos;
1139                         else
1140                                 elem_parse_failed = true;
1141                         break;
1142                 case WLAN_EID_TIM:
1143                         if (elen >= sizeof(struct ieee80211_tim_ie)) {
1144                                 elems->tim = (void *)pos;
1145                                 elems->tim_len = elen;
1146                         } else
1147                                 elem_parse_failed = true;
1148                         break;
1149                 case WLAN_EID_VENDOR_SPECIFIC:
1150                         if (elen >= 4 && pos[0] == 0x00 && pos[1] == 0x50 &&
1151                             pos[2] == 0xf2) {
1152                                 /* Microsoft OUI (00:50:F2) */
1153
1154                                 if (calc_crc)
1155                                         crc = crc32_be(crc, pos - 2, elen + 2);
1156
1157                                 if (elen >= 5 && pos[3] == 2) {
1158                                         /* OUI Type 2 - WMM IE */
1159                                         if (pos[4] == 0) {
1160                                                 elems->wmm_info = pos;
1161                                                 elems->wmm_info_len = elen;
1162                                         } else if (pos[4] == 1) {
1163                                                 elems->wmm_param = pos;
1164                                                 elems->wmm_param_len = elen;
1165                                         }
1166                                 }
1167                         }
1168                         break;
1169                 case WLAN_EID_RSN:
1170                         elems->rsn = pos;
1171                         elems->rsn_len = elen;
1172                         break;
1173                 case WLAN_EID_ERP_INFO:
1174                         if (elen >= 1)
1175                                 elems->erp_info = pos;
1176                         else
1177                                 elem_parse_failed = true;
1178                         break;
1179                 case WLAN_EID_EXT_SUPP_RATES:
1180                         elems->ext_supp_rates = pos;
1181                         elems->ext_supp_rates_len = elen;
1182                         break;
1183                 case WLAN_EID_HT_CAPABILITY:
1184                         if (elen >= sizeof(struct ieee80211_ht_cap))
1185                                 elems->ht_cap_elem = (void *)pos;
1186                         else
1187                                 elem_parse_failed = true;
1188                         break;
1189                 case WLAN_EID_HT_OPERATION:
1190                         if (elen >= sizeof(struct ieee80211_ht_operation))
1191                                 elems->ht_operation = (void *)pos;
1192                         else
1193                                 elem_parse_failed = true;
1194                         break;
1195                 case WLAN_EID_VHT_CAPABILITY:
1196                         if (elen >= sizeof(struct ieee80211_vht_cap))
1197                                 elems->vht_cap_elem = (void *)pos;
1198                         else
1199                                 elem_parse_failed = true;
1200                         break;
1201                 case WLAN_EID_VHT_OPERATION:
1202                         if (elen >= sizeof(struct ieee80211_vht_operation)) {
1203                                 elems->vht_operation = (void *)pos;
1204                                 if (calc_crc)
1205                                         crc = crc32_be(crc, pos - 2, elen + 2);
1206                                 break;
1207                         }
1208                         elem_parse_failed = true;
1209                         break;
1210                 case WLAN_EID_OPMODE_NOTIF:
1211                         if (elen > 0) {
1212                                 elems->opmode_notif = pos;
1213                                 if (calc_crc)
1214                                         crc = crc32_be(crc, pos - 2, elen + 2);
1215                                 break;
1216                         }
1217                         elem_parse_failed = true;
1218                         break;
1219                 case WLAN_EID_MESH_ID:
1220                         elems->mesh_id = pos;
1221                         elems->mesh_id_len = elen;
1222                         break;
1223                 case WLAN_EID_MESH_CONFIG:
1224                         if (elen >= sizeof(struct ieee80211_meshconf_ie))
1225                                 elems->mesh_config = (void *)pos;
1226                         else
1227                                 elem_parse_failed = true;
1228                         break;
1229                 case WLAN_EID_PEER_MGMT:
1230                         elems->peering = pos;
1231                         elems->peering_len = elen;
1232                         break;
1233                 case WLAN_EID_MESH_AWAKE_WINDOW:
1234                         if (elen >= 2)
1235                                 elems->awake_window = (void *)pos;
1236                         break;
1237                 case WLAN_EID_PREQ:
1238                         elems->preq = pos;
1239                         elems->preq_len = elen;
1240                         break;
1241                 case WLAN_EID_PREP:
1242                         elems->prep = pos;
1243                         elems->prep_len = elen;
1244                         break;
1245                 case WLAN_EID_PERR:
1246                         elems->perr = pos;
1247                         elems->perr_len = elen;
1248                         break;
1249                 case WLAN_EID_RANN:
1250                         if (elen >= sizeof(struct ieee80211_rann_ie))
1251                                 elems->rann = (void *)pos;
1252                         else
1253                                 elem_parse_failed = true;
1254                         break;
1255                 case WLAN_EID_CHANNEL_SWITCH:
1256                         if (elen != sizeof(struct ieee80211_channel_sw_ie)) {
1257                                 elem_parse_failed = true;
1258                                 break;
1259                         }
1260                         elems->ch_switch_ie = (void *)pos;
1261                         break;
1262                 case WLAN_EID_EXT_CHANSWITCH_ANN:
1263                         if (elen != sizeof(struct ieee80211_ext_chansw_ie)) {
1264                                 elem_parse_failed = true;
1265                                 break;
1266                         }
1267                         elems->ext_chansw_ie = (void *)pos;
1268                         break;
1269                 case WLAN_EID_SECONDARY_CHANNEL_OFFSET:
1270                         if (elen != sizeof(struct ieee80211_sec_chan_offs_ie)) {
1271                                 elem_parse_failed = true;
1272                                 break;
1273                         }
1274                         elems->sec_chan_offs = (void *)pos;
1275                         break;
1276                 case WLAN_EID_CHAN_SWITCH_PARAM:
1277                         if (elen <
1278                             sizeof(*elems->mesh_chansw_params_ie)) {
1279                                 elem_parse_failed = true;
1280                                 break;
1281                         }
1282                         elems->mesh_chansw_params_ie = (void *)pos;
1283                         break;
1284                 case WLAN_EID_WIDE_BW_CHANNEL_SWITCH:
1285                         if (!action ||
1286                             elen < sizeof(*elems->wide_bw_chansw_ie)) {
1287                                 elem_parse_failed = true;
1288                                 break;
1289                         }
1290                         elems->wide_bw_chansw_ie = (void *)pos;
1291                         break;
1292                 case WLAN_EID_CHANNEL_SWITCH_WRAPPER:
1293                         if (action) {
1294                                 elem_parse_failed = true;
1295                                 break;
1296                         }
1297                         /*
1298                          * This is a bit tricky, but as we only care about
1299                          * the wide bandwidth channel switch element, so
1300                          * just parse it out manually.
1301                          */
1302                         ie = cfg80211_find_ie(WLAN_EID_WIDE_BW_CHANNEL_SWITCH,
1303                                               pos, elen);
1304                         if (ie) {
1305                                 if (ie[1] >= sizeof(*elems->wide_bw_chansw_ie))
1306                                         elems->wide_bw_chansw_ie =
1307                                                 (void *)(ie + 2);
1308                                 else
1309                                         elem_parse_failed = true;
1310                         }
1311                         break;
1312                 case WLAN_EID_COUNTRY:
1313                         elems->country_elem = pos;
1314                         elems->country_elem_len = elen;
1315                         break;
1316                 case WLAN_EID_PWR_CONSTRAINT:
1317                         if (elen != 1) {
1318                                 elem_parse_failed = true;
1319                                 break;
1320                         }
1321                         elems->pwr_constr_elem = pos;
1322                         break;
1323                 case WLAN_EID_CISCO_VENDOR_SPECIFIC:
1324                         /* Lots of different options exist, but we only care
1325                          * about the Dynamic Transmit Power Control element.
1326                          * First check for the Cisco OUI, then for the DTPC
1327                          * tag (0x00).
1328                          */
1329                         if (elen < 4) {
1330                                 elem_parse_failed = true;
1331                                 break;
1332                         }
1333
1334                         if (pos[0] != 0x00 || pos[1] != 0x40 ||
1335                             pos[2] != 0x96 || pos[3] != 0x00)
1336                                 break;
1337
1338                         if (elen != 6) {
1339                                 elem_parse_failed = true;
1340                                 break;
1341                         }
1342
1343                         if (calc_crc)
1344                                 crc = crc32_be(crc, pos - 2, elen + 2);
1345
1346                         elems->cisco_dtpc_elem = pos;
1347                         break;
1348                 case WLAN_EID_ADDBA_EXT:
1349                         if (elen < sizeof(struct ieee80211_addba_ext_ie)) {
1350                                 elem_parse_failed = true;
1351                                 break;
1352                         }
1353                         elems->addba_ext_ie = (void *)pos;
1354                         break;
1355                 case WLAN_EID_TIMEOUT_INTERVAL:
1356                         if (elen >= sizeof(struct ieee80211_timeout_interval_ie))
1357                                 elems->timeout_int = (void *)pos;
1358                         else
1359                                 elem_parse_failed = true;
1360                         break;
1361                 case WLAN_EID_BSS_MAX_IDLE_PERIOD:
1362                         if (elen >= sizeof(*elems->max_idle_period_ie))
1363                                 elems->max_idle_period_ie = (void *)pos;
1364                         break;
1365                 case WLAN_EID_RSNX:
1366                         elems->rsnx = pos;
1367                         elems->rsnx_len = elen;
1368                         break;
1369                 case WLAN_EID_TX_POWER_ENVELOPE:
1370                         if (elen < 1 ||
1371                             elen > sizeof(struct ieee80211_tx_pwr_env))
1372                                 break;
1373
1374                         if (elems->tx_pwr_env_num >= ARRAY_SIZE(elems->tx_pwr_env))
1375                                 break;
1376
1377                         elems->tx_pwr_env[elems->tx_pwr_env_num] = (void *)pos;
1378                         elems->tx_pwr_env_len[elems->tx_pwr_env_num] = elen;
1379                         elems->tx_pwr_env_num++;
1380                         break;
1381                 case WLAN_EID_EXTENSION:
1382                         ieee80211_parse_extension_element(calc_crc ?
1383                                                                 &crc : NULL,
1384                                                           elem, elems);
1385                         break;
1386                 case WLAN_EID_S1G_CAPABILITIES:
1387                         if (elen >= sizeof(*elems->s1g_capab))
1388                                 elems->s1g_capab = (void *)pos;
1389                         else
1390                                 elem_parse_failed = true;
1391                         break;
1392                 case WLAN_EID_S1G_OPERATION:
1393                         if (elen == sizeof(*elems->s1g_oper))
1394                                 elems->s1g_oper = (void *)pos;
1395                         else
1396                                 elem_parse_failed = true;
1397                         break;
1398                 case WLAN_EID_S1G_BCN_COMPAT:
1399                         if (elen == sizeof(*elems->s1g_bcn_compat))
1400                                 elems->s1g_bcn_compat = (void *)pos;
1401                         else
1402                                 elem_parse_failed = true;
1403                         break;
1404                 case WLAN_EID_AID_RESPONSE:
1405                         if (elen == sizeof(struct ieee80211_aid_response_ie))
1406                                 elems->aid_resp = (void *)pos;
1407                         else
1408                                 elem_parse_failed = true;
1409                         break;
1410                 default:
1411                         break;
1412                 }
1413
1414                 if (elem_parse_failed)
1415                         elems->parse_error = true;
1416                 else
1417                         __set_bit(id, seen_elems);
1418         }
1419
1420         if (!for_each_element_completed(elem, start, len))
1421                 elems->parse_error = true;
1422
1423         return crc;
1424 }
1425
1426 static size_t ieee802_11_find_bssid_profile(const u8 *start, size_t len,
1427                                             struct ieee802_11_elems *elems,
1428                                             const u8 *transmitter_bssid,
1429                                             const u8 *bss_bssid,
1430                                             u8 *nontransmitted_profile)
1431 {
1432         const struct element *elem, *sub;
1433         size_t profile_len = 0;
1434         bool found = false;
1435
1436         if (!bss_bssid || !transmitter_bssid)
1437                 return profile_len;
1438
1439         for_each_element_id(elem, WLAN_EID_MULTIPLE_BSSID, start, len) {
1440                 if (elem->datalen < 2)
1441                         continue;
1442
1443                 for_each_element(sub, elem->data + 1, elem->datalen - 1) {
1444                         u8 new_bssid[ETH_ALEN];
1445                         const u8 *index;
1446
1447                         if (sub->id != 0 || sub->datalen < 4) {
1448                                 /* not a valid BSS profile */
1449                                 continue;
1450                         }
1451
1452                         if (sub->data[0] != WLAN_EID_NON_TX_BSSID_CAP ||
1453                             sub->data[1] != 2) {
1454                                 /* The first element of the
1455                                  * Nontransmitted BSSID Profile is not
1456                                  * the Nontransmitted BSSID Capability
1457                                  * element.
1458                                  */
1459                                 continue;
1460                         }
1461
1462                         memset(nontransmitted_profile, 0, len);
1463                         profile_len = cfg80211_merge_profile(start, len,
1464                                                              elem,
1465                                                              sub,
1466                                                              nontransmitted_profile,
1467                                                              len);
1468
1469                         /* found a Nontransmitted BSSID Profile */
1470                         index = cfg80211_find_ie(WLAN_EID_MULTI_BSSID_IDX,
1471                                                  nontransmitted_profile,
1472                                                  profile_len);
1473                         if (!index || index[1] < 1 || index[2] == 0) {
1474                                 /* Invalid MBSSID Index element */
1475                                 continue;
1476                         }
1477
1478                         cfg80211_gen_new_bssid(transmitter_bssid,
1479                                                elem->data[0],
1480                                                index[2],
1481                                                new_bssid);
1482                         if (ether_addr_equal(new_bssid, bss_bssid)) {
1483                                 found = true;
1484                                 elems->bssid_index_len = index[1];
1485                                 elems->bssid_index = (void *)&index[2];
1486                                 break;
1487                         }
1488                 }
1489         }
1490
1491         return found ? profile_len : 0;
1492 }
1493
1494 struct ieee802_11_elems *ieee802_11_parse_elems_crc(const u8 *start, size_t len,
1495                                                     bool action, u64 filter,
1496                                                     u32 crc,
1497                                                     const u8 *transmitter_bssid,
1498                                                     const u8 *bss_bssid)
1499 {
1500         struct ieee802_11_elems *elems;
1501         const struct element *non_inherit = NULL;
1502         u8 *nontransmitted_profile;
1503         int nontransmitted_profile_len = 0;
1504
1505         elems = kzalloc(sizeof(*elems), GFP_ATOMIC);
1506         if (!elems)
1507                 return NULL;
1508         elems->ie_start = start;
1509         elems->total_len = len;
1510
1511         nontransmitted_profile = kmalloc(len, GFP_ATOMIC);
1512         if (nontransmitted_profile) {
1513                 nontransmitted_profile_len =
1514                         ieee802_11_find_bssid_profile(start, len, elems,
1515                                                       transmitter_bssid,
1516                                                       bss_bssid,
1517                                                       nontransmitted_profile);
1518                 non_inherit =
1519                         cfg80211_find_ext_elem(WLAN_EID_EXT_NON_INHERITANCE,
1520                                                nontransmitted_profile,
1521                                                nontransmitted_profile_len);
1522         }
1523
1524         crc = _ieee802_11_parse_elems_crc(start, len, action, elems, filter,
1525                                           crc, non_inherit);
1526
1527         /* Override with nontransmitted profile, if found */
1528         if (nontransmitted_profile_len)
1529                 _ieee802_11_parse_elems_crc(nontransmitted_profile,
1530                                             nontransmitted_profile_len,
1531                                             action, elems, 0, 0, NULL);
1532
1533         if (elems->tim && !elems->parse_error) {
1534                 const struct ieee80211_tim_ie *tim_ie = elems->tim;
1535
1536                 elems->dtim_period = tim_ie->dtim_period;
1537                 elems->dtim_count = tim_ie->dtim_count;
1538         }
1539
1540         /* Override DTIM period and count if needed */
1541         if (elems->bssid_index &&
1542             elems->bssid_index_len >=
1543             offsetofend(struct ieee80211_bssid_index, dtim_period))
1544                 elems->dtim_period = elems->bssid_index->dtim_period;
1545
1546         if (elems->bssid_index &&
1547             elems->bssid_index_len >=
1548             offsetofend(struct ieee80211_bssid_index, dtim_count))
1549                 elems->dtim_count = elems->bssid_index->dtim_count;
1550
1551         kfree(nontransmitted_profile);
1552
1553         elems->crc = crc;
1554
1555         return elems;
1556 }
1557
1558 void ieee80211_regulatory_limit_wmm_params(struct ieee80211_sub_if_data *sdata,
1559                                            struct ieee80211_tx_queue_params
1560                                            *qparam, int ac)
1561 {
1562         struct ieee80211_chanctx_conf *chanctx_conf;
1563         const struct ieee80211_reg_rule *rrule;
1564         const struct ieee80211_wmm_ac *wmm_ac;
1565         u16 center_freq = 0;
1566
1567         if (sdata->vif.type != NL80211_IFTYPE_AP &&
1568             sdata->vif.type != NL80211_IFTYPE_STATION)
1569                 return;
1570
1571         rcu_read_lock();
1572         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1573         if (chanctx_conf)
1574                 center_freq = chanctx_conf->def.chan->center_freq;
1575
1576         if (!center_freq) {
1577                 rcu_read_unlock();
1578                 return;
1579         }
1580
1581         rrule = freq_reg_info(sdata->wdev.wiphy, MHZ_TO_KHZ(center_freq));
1582
1583         if (IS_ERR_OR_NULL(rrule) || !rrule->has_wmm) {
1584                 rcu_read_unlock();
1585                 return;
1586         }
1587
1588         if (sdata->vif.type == NL80211_IFTYPE_AP)
1589                 wmm_ac = &rrule->wmm_rule.ap[ac];
1590         else
1591                 wmm_ac = &rrule->wmm_rule.client[ac];
1592         qparam->cw_min = max_t(u16, qparam->cw_min, wmm_ac->cw_min);
1593         qparam->cw_max = max_t(u16, qparam->cw_max, wmm_ac->cw_max);
1594         qparam->aifs = max_t(u8, qparam->aifs, wmm_ac->aifsn);
1595         qparam->txop = min_t(u16, qparam->txop, wmm_ac->cot / 32);
1596         rcu_read_unlock();
1597 }
1598
1599 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
1600                                bool bss_notify, bool enable_qos)
1601 {
1602         struct ieee80211_local *local = sdata->local;
1603         struct ieee80211_tx_queue_params qparam;
1604         struct ieee80211_chanctx_conf *chanctx_conf;
1605         int ac;
1606         bool use_11b;
1607         bool is_ocb; /* Use another EDCA parameters if dot11OCBActivated=true */
1608         int aCWmin, aCWmax;
1609
1610         if (!local->ops->conf_tx)
1611                 return;
1612
1613         if (local->hw.queues < IEEE80211_NUM_ACS)
1614                 return;
1615
1616         memset(&qparam, 0, sizeof(qparam));
1617
1618         rcu_read_lock();
1619         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1620         use_11b = (chanctx_conf &&
1621                    chanctx_conf->def.chan->band == NL80211_BAND_2GHZ) &&
1622                  !(sdata->flags & IEEE80211_SDATA_OPERATING_GMODE);
1623         rcu_read_unlock();
1624
1625         is_ocb = (sdata->vif.type == NL80211_IFTYPE_OCB);
1626
1627         /* Set defaults according to 802.11-2007 Table 7-37 */
1628         aCWmax = 1023;
1629         if (use_11b)
1630                 aCWmin = 31;
1631         else
1632                 aCWmin = 15;
1633
1634         /* Confiure old 802.11b/g medium access rules. */
1635         qparam.cw_max = aCWmax;
1636         qparam.cw_min = aCWmin;
1637         qparam.txop = 0;
1638         qparam.aifs = 2;
1639
1640         for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
1641                 /* Update if QoS is enabled. */
1642                 if (enable_qos) {
1643                         switch (ac) {
1644                         case IEEE80211_AC_BK:
1645                                 qparam.cw_max = aCWmax;
1646                                 qparam.cw_min = aCWmin;
1647                                 qparam.txop = 0;
1648                                 if (is_ocb)
1649                                         qparam.aifs = 9;
1650                                 else
1651                                         qparam.aifs = 7;
1652                                 break;
1653                         /* never happens but let's not leave undefined */
1654                         default:
1655                         case IEEE80211_AC_BE:
1656                                 qparam.cw_max = aCWmax;
1657                                 qparam.cw_min = aCWmin;
1658                                 qparam.txop = 0;
1659                                 if (is_ocb)
1660                                         qparam.aifs = 6;
1661                                 else
1662                                         qparam.aifs = 3;
1663                                 break;
1664                         case IEEE80211_AC_VI:
1665                                 qparam.cw_max = aCWmin;
1666                                 qparam.cw_min = (aCWmin + 1) / 2 - 1;
1667                                 if (is_ocb)
1668                                         qparam.txop = 0;
1669                                 else if (use_11b)
1670                                         qparam.txop = 6016/32;
1671                                 else
1672                                         qparam.txop = 3008/32;
1673
1674                                 if (is_ocb)
1675                                         qparam.aifs = 3;
1676                                 else
1677                                         qparam.aifs = 2;
1678                                 break;
1679                         case IEEE80211_AC_VO:
1680                                 qparam.cw_max = (aCWmin + 1) / 2 - 1;
1681                                 qparam.cw_min = (aCWmin + 1) / 4 - 1;
1682                                 if (is_ocb)
1683                                         qparam.txop = 0;
1684                                 else if (use_11b)
1685                                         qparam.txop = 3264/32;
1686                                 else
1687                                         qparam.txop = 1504/32;
1688                                 qparam.aifs = 2;
1689                                 break;
1690                         }
1691                 }
1692                 ieee80211_regulatory_limit_wmm_params(sdata, &qparam, ac);
1693
1694                 qparam.uapsd = false;
1695
1696                 sdata->tx_conf[ac] = qparam;
1697                 drv_conf_tx(local, sdata, ac, &qparam);
1698         }
1699
1700         if (sdata->vif.type != NL80211_IFTYPE_MONITOR &&
1701             sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE &&
1702             sdata->vif.type != NL80211_IFTYPE_NAN) {
1703                 sdata->vif.bss_conf.qos = enable_qos;
1704                 if (bss_notify)
1705                         ieee80211_bss_info_change_notify(sdata,
1706                                                          BSS_CHANGED_QOS);
1707         }
1708 }
1709
1710 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
1711                          u16 transaction, u16 auth_alg, u16 status,
1712                          const u8 *extra, size_t extra_len, const u8 *da,
1713                          const u8 *bssid, const u8 *key, u8 key_len, u8 key_idx,
1714                          u32 tx_flags)
1715 {
1716         struct ieee80211_local *local = sdata->local;
1717         struct sk_buff *skb;
1718         struct ieee80211_mgmt *mgmt;
1719         int err;
1720
1721         /* 24 + 6 = header + auth_algo + auth_transaction + status_code */
1722         skb = dev_alloc_skb(local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN +
1723                             24 + 6 + extra_len + IEEE80211_WEP_ICV_LEN);
1724         if (!skb)
1725                 return;
1726
1727         skb_reserve(skb, local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN);
1728
1729         mgmt = skb_put_zero(skb, 24 + 6);
1730         mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
1731                                           IEEE80211_STYPE_AUTH);
1732         memcpy(mgmt->da, da, ETH_ALEN);
1733         memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
1734         memcpy(mgmt->bssid, bssid, ETH_ALEN);
1735         mgmt->u.auth.auth_alg = cpu_to_le16(auth_alg);
1736         mgmt->u.auth.auth_transaction = cpu_to_le16(transaction);
1737         mgmt->u.auth.status_code = cpu_to_le16(status);
1738         if (extra)
1739                 skb_put_data(skb, extra, extra_len);
1740
1741         if (auth_alg == WLAN_AUTH_SHARED_KEY && transaction == 3) {
1742                 mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
1743                 err = ieee80211_wep_encrypt(local, skb, key, key_len, key_idx);
1744                 if (WARN_ON(err)) {
1745                         kfree_skb(skb);
1746                         return;
1747                 }
1748         }
1749
1750         IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT |
1751                                         tx_flags;
1752         ieee80211_tx_skb(sdata, skb);
1753 }
1754
1755 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
1756                                     const u8 *da, const u8 *bssid,
1757                                     u16 stype, u16 reason,
1758                                     bool send_frame, u8 *frame_buf)
1759 {
1760         struct ieee80211_local *local = sdata->local;
1761         struct sk_buff *skb;
1762         struct ieee80211_mgmt *mgmt = (void *)frame_buf;
1763
1764         /* build frame */
1765         mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | stype);
1766         mgmt->duration = 0; /* initialize only */
1767         mgmt->seq_ctrl = 0; /* initialize only */
1768         memcpy(mgmt->da, da, ETH_ALEN);
1769         memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
1770         memcpy(mgmt->bssid, bssid, ETH_ALEN);
1771         /* u.deauth.reason_code == u.disassoc.reason_code */
1772         mgmt->u.deauth.reason_code = cpu_to_le16(reason);
1773
1774         if (send_frame) {
1775                 skb = dev_alloc_skb(local->hw.extra_tx_headroom +
1776                                     IEEE80211_DEAUTH_FRAME_LEN);
1777                 if (!skb)
1778                         return;
1779
1780                 skb_reserve(skb, local->hw.extra_tx_headroom);
1781
1782                 /* copy in frame */
1783                 skb_put_data(skb, mgmt, IEEE80211_DEAUTH_FRAME_LEN);
1784
1785                 if (sdata->vif.type != NL80211_IFTYPE_STATION ||
1786                     !(sdata->u.mgd.flags & IEEE80211_STA_MFP_ENABLED))
1787                         IEEE80211_SKB_CB(skb)->flags |=
1788                                 IEEE80211_TX_INTFL_DONT_ENCRYPT;
1789
1790                 ieee80211_tx_skb(sdata, skb);
1791         }
1792 }
1793
1794 static u8 *ieee80211_write_he_6ghz_cap(u8 *pos, __le16 cap, u8 *end)
1795 {
1796         if ((end - pos) < 5)
1797                 return pos;
1798
1799         *pos++ = WLAN_EID_EXTENSION;
1800         *pos++ = 1 + sizeof(cap);
1801         *pos++ = WLAN_EID_EXT_HE_6GHZ_CAPA;
1802         memcpy(pos, &cap, sizeof(cap));
1803
1804         return pos + 2;
1805 }
1806
1807 static int ieee80211_build_preq_ies_band(struct ieee80211_sub_if_data *sdata,
1808                                          u8 *buffer, size_t buffer_len,
1809                                          const u8 *ie, size_t ie_len,
1810                                          enum nl80211_band band,
1811                                          u32 rate_mask,
1812                                          struct cfg80211_chan_def *chandef,
1813                                          size_t *offset, u32 flags)
1814 {
1815         struct ieee80211_local *local = sdata->local;
1816         struct ieee80211_supported_band *sband;
1817         const struct ieee80211_sta_he_cap *he_cap;
1818         const struct ieee80211_sta_eht_cap *eht_cap;
1819         u8 *pos = buffer, *end = buffer + buffer_len;
1820         size_t noffset;
1821         int supp_rates_len, i;
1822         u8 rates[32];
1823         int num_rates;
1824         int ext_rates_len;
1825         int shift;
1826         u32 rate_flags;
1827         bool have_80mhz = false;
1828
1829         *offset = 0;
1830
1831         sband = local->hw.wiphy->bands[band];
1832         if (WARN_ON_ONCE(!sband))
1833                 return 0;
1834
1835         rate_flags = ieee80211_chandef_rate_flags(chandef);
1836         shift = ieee80211_chandef_get_shift(chandef);
1837
1838         num_rates = 0;
1839         for (i = 0; i < sband->n_bitrates; i++) {
1840                 if ((BIT(i) & rate_mask) == 0)
1841                         continue; /* skip rate */
1842                 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
1843                         continue;
1844
1845                 rates[num_rates++] =
1846                         (u8) DIV_ROUND_UP(sband->bitrates[i].bitrate,
1847                                           (1 << shift) * 5);
1848         }
1849
1850         supp_rates_len = min_t(int, num_rates, 8);
1851
1852         if (end - pos < 2 + supp_rates_len)
1853                 goto out_err;
1854         *pos++ = WLAN_EID_SUPP_RATES;
1855         *pos++ = supp_rates_len;
1856         memcpy(pos, rates, supp_rates_len);
1857         pos += supp_rates_len;
1858
1859         /* insert "request information" if in custom IEs */
1860         if (ie && ie_len) {
1861                 static const u8 before_extrates[] = {
1862                         WLAN_EID_SSID,
1863                         WLAN_EID_SUPP_RATES,
1864                         WLAN_EID_REQUEST,
1865                 };
1866                 noffset = ieee80211_ie_split(ie, ie_len,
1867                                              before_extrates,
1868                                              ARRAY_SIZE(before_extrates),
1869                                              *offset);
1870                 if (end - pos < noffset - *offset)
1871                         goto out_err;
1872                 memcpy(pos, ie + *offset, noffset - *offset);
1873                 pos += noffset - *offset;
1874                 *offset = noffset;
1875         }
1876
1877         ext_rates_len = num_rates - supp_rates_len;
1878         if (ext_rates_len > 0) {
1879                 if (end - pos < 2 + ext_rates_len)
1880                         goto out_err;
1881                 *pos++ = WLAN_EID_EXT_SUPP_RATES;
1882                 *pos++ = ext_rates_len;
1883                 memcpy(pos, rates + supp_rates_len, ext_rates_len);
1884                 pos += ext_rates_len;
1885         }
1886
1887         if (chandef->chan && sband->band == NL80211_BAND_2GHZ) {
1888                 if (end - pos < 3)
1889                         goto out_err;
1890                 *pos++ = WLAN_EID_DS_PARAMS;
1891                 *pos++ = 1;
1892                 *pos++ = ieee80211_frequency_to_channel(
1893                                 chandef->chan->center_freq);
1894         }
1895
1896         if (flags & IEEE80211_PROBE_FLAG_MIN_CONTENT)
1897                 goto done;
1898
1899         /* insert custom IEs that go before HT */
1900         if (ie && ie_len) {
1901                 static const u8 before_ht[] = {
1902                         /*
1903                          * no need to list the ones split off already
1904                          * (or generated here)
1905                          */
1906                         WLAN_EID_DS_PARAMS,
1907                         WLAN_EID_SUPPORTED_REGULATORY_CLASSES,
1908                 };
1909                 noffset = ieee80211_ie_split(ie, ie_len,
1910                                              before_ht, ARRAY_SIZE(before_ht),
1911                                              *offset);
1912                 if (end - pos < noffset - *offset)
1913                         goto out_err;
1914                 memcpy(pos, ie + *offset, noffset - *offset);
1915                 pos += noffset - *offset;
1916                 *offset = noffset;
1917         }
1918
1919         if (sband->ht_cap.ht_supported) {
1920                 if (end - pos < 2 + sizeof(struct ieee80211_ht_cap))
1921                         goto out_err;
1922                 pos = ieee80211_ie_build_ht_cap(pos, &sband->ht_cap,
1923                                                 sband->ht_cap.cap);
1924         }
1925
1926         /* insert custom IEs that go before VHT */
1927         if (ie && ie_len) {
1928                 static const u8 before_vht[] = {
1929                         /*
1930                          * no need to list the ones split off already
1931                          * (or generated here)
1932                          */
1933                         WLAN_EID_BSS_COEX_2040,
1934                         WLAN_EID_EXT_CAPABILITY,
1935                         WLAN_EID_SSID_LIST,
1936                         WLAN_EID_CHANNEL_USAGE,
1937                         WLAN_EID_INTERWORKING,
1938                         WLAN_EID_MESH_ID,
1939                         /* 60 GHz (Multi-band, DMG, MMS) can't happen */
1940                 };
1941                 noffset = ieee80211_ie_split(ie, ie_len,
1942                                              before_vht, ARRAY_SIZE(before_vht),
1943                                              *offset);
1944                 if (end - pos < noffset - *offset)
1945                         goto out_err;
1946                 memcpy(pos, ie + *offset, noffset - *offset);
1947                 pos += noffset - *offset;
1948                 *offset = noffset;
1949         }
1950
1951         /* Check if any channel in this sband supports at least 80 MHz */
1952         for (i = 0; i < sband->n_channels; i++) {
1953                 if (sband->channels[i].flags & (IEEE80211_CHAN_DISABLED |
1954                                                 IEEE80211_CHAN_NO_80MHZ))
1955                         continue;
1956
1957                 have_80mhz = true;
1958                 break;
1959         }
1960
1961         if (sband->vht_cap.vht_supported && have_80mhz) {
1962                 if (end - pos < 2 + sizeof(struct ieee80211_vht_cap))
1963                         goto out_err;
1964                 pos = ieee80211_ie_build_vht_cap(pos, &sband->vht_cap,
1965                                                  sband->vht_cap.cap);
1966         }
1967
1968         /* insert custom IEs that go before HE */
1969         if (ie && ie_len) {
1970                 static const u8 before_he[] = {
1971                         /*
1972                          * no need to list the ones split off before VHT
1973                          * or generated here
1974                          */
1975                         WLAN_EID_EXTENSION, WLAN_EID_EXT_FILS_REQ_PARAMS,
1976                         WLAN_EID_AP_CSN,
1977                         /* TODO: add 11ah/11aj/11ak elements */
1978                 };
1979                 noffset = ieee80211_ie_split(ie, ie_len,
1980                                              before_he, ARRAY_SIZE(before_he),
1981                                              *offset);
1982                 if (end - pos < noffset - *offset)
1983                         goto out_err;
1984                 memcpy(pos, ie + *offset, noffset - *offset);
1985                 pos += noffset - *offset;
1986                 *offset = noffset;
1987         }
1988
1989         he_cap = ieee80211_get_he_iftype_cap(sband,
1990                                              ieee80211_vif_type_p2p(&sdata->vif));
1991         if (he_cap &&
1992             cfg80211_any_usable_channels(local->hw.wiphy, BIT(sband->band),
1993                                          IEEE80211_CHAN_NO_HE)) {
1994                 pos = ieee80211_ie_build_he_cap(0, pos, he_cap, end);
1995                 if (!pos)
1996                         goto out_err;
1997         }
1998
1999         eht_cap = ieee80211_get_eht_iftype_cap(sband,
2000                                                ieee80211_vif_type_p2p(&sdata->vif));
2001
2002         if (eht_cap &&
2003             cfg80211_any_usable_channels(local->hw.wiphy, BIT(sband->band),
2004                                          IEEE80211_CHAN_NO_HE |
2005                                          IEEE80211_CHAN_NO_EHT)) {
2006                 pos = ieee80211_ie_build_eht_cap(pos, he_cap, eht_cap, end);
2007                 if (!pos)
2008                         goto out_err;
2009         }
2010
2011         if (cfg80211_any_usable_channels(local->hw.wiphy,
2012                                          BIT(NL80211_BAND_6GHZ),
2013                                          IEEE80211_CHAN_NO_HE)) {
2014                 struct ieee80211_supported_band *sband6;
2015
2016                 sband6 = local->hw.wiphy->bands[NL80211_BAND_6GHZ];
2017                 he_cap = ieee80211_get_he_iftype_cap(sband6,
2018                                 ieee80211_vif_type_p2p(&sdata->vif));
2019
2020                 if (he_cap) {
2021                         enum nl80211_iftype iftype =
2022                                 ieee80211_vif_type_p2p(&sdata->vif);
2023                         __le16 cap = ieee80211_get_he_6ghz_capa(sband, iftype);
2024
2025                         pos = ieee80211_write_he_6ghz_cap(pos, cap, end);
2026                 }
2027         }
2028
2029         /*
2030          * If adding more here, adjust code in main.c
2031          * that calculates local->scan_ies_len.
2032          */
2033
2034         return pos - buffer;
2035  out_err:
2036         WARN_ONCE(1, "not enough space for preq IEs\n");
2037  done:
2038         return pos - buffer;
2039 }
2040
2041 int ieee80211_build_preq_ies(struct ieee80211_sub_if_data *sdata, u8 *buffer,
2042                              size_t buffer_len,
2043                              struct ieee80211_scan_ies *ie_desc,
2044                              const u8 *ie, size_t ie_len,
2045                              u8 bands_used, u32 *rate_masks,
2046                              struct cfg80211_chan_def *chandef,
2047                              u32 flags)
2048 {
2049         size_t pos = 0, old_pos = 0, custom_ie_offset = 0;
2050         int i;
2051
2052         memset(ie_desc, 0, sizeof(*ie_desc));
2053
2054         for (i = 0; i < NUM_NL80211_BANDS; i++) {
2055                 if (bands_used & BIT(i)) {
2056                         pos += ieee80211_build_preq_ies_band(sdata,
2057                                                              buffer + pos,
2058                                                              buffer_len - pos,
2059                                                              ie, ie_len, i,
2060                                                              rate_masks[i],
2061                                                              chandef,
2062                                                              &custom_ie_offset,
2063                                                              flags);
2064                         ie_desc->ies[i] = buffer + old_pos;
2065                         ie_desc->len[i] = pos - old_pos;
2066                         old_pos = pos;
2067                 }
2068         }
2069
2070         /* add any remaining custom IEs */
2071         if (ie && ie_len) {
2072                 if (WARN_ONCE(buffer_len - pos < ie_len - custom_ie_offset,
2073                               "not enough space for preq custom IEs\n"))
2074                         return pos;
2075                 memcpy(buffer + pos, ie + custom_ie_offset,
2076                        ie_len - custom_ie_offset);
2077                 ie_desc->common_ies = buffer + pos;
2078                 ie_desc->common_ie_len = ie_len - custom_ie_offset;
2079                 pos += ie_len - custom_ie_offset;
2080         }
2081
2082         return pos;
2083 };
2084
2085 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
2086                                           const u8 *src, const u8 *dst,
2087                                           u32 ratemask,
2088                                           struct ieee80211_channel *chan,
2089                                           const u8 *ssid, size_t ssid_len,
2090                                           const u8 *ie, size_t ie_len,
2091                                           u32 flags)
2092 {
2093         struct ieee80211_local *local = sdata->local;
2094         struct cfg80211_chan_def chandef;
2095         struct sk_buff *skb;
2096         struct ieee80211_mgmt *mgmt;
2097         int ies_len;
2098         u32 rate_masks[NUM_NL80211_BANDS] = {};
2099         struct ieee80211_scan_ies dummy_ie_desc;
2100
2101         /*
2102          * Do not send DS Channel parameter for directed probe requests
2103          * in order to maximize the chance that we get a response.  Some
2104          * badly-behaved APs don't respond when this parameter is included.
2105          */
2106         chandef.width = sdata->vif.bss_conf.chandef.width;
2107         if (flags & IEEE80211_PROBE_FLAG_DIRECTED)
2108                 chandef.chan = NULL;
2109         else
2110                 chandef.chan = chan;
2111
2112         skb = ieee80211_probereq_get(&local->hw, src, ssid, ssid_len,
2113                                      local->scan_ies_len + ie_len);
2114         if (!skb)
2115                 return NULL;
2116
2117         rate_masks[chan->band] = ratemask;
2118         ies_len = ieee80211_build_preq_ies(sdata, skb_tail_pointer(skb),
2119                                            skb_tailroom(skb), &dummy_ie_desc,
2120                                            ie, ie_len, BIT(chan->band),
2121                                            rate_masks, &chandef, flags);
2122         skb_put(skb, ies_len);
2123
2124         if (dst) {
2125                 mgmt = (struct ieee80211_mgmt *) skb->data;
2126                 memcpy(mgmt->da, dst, ETH_ALEN);
2127                 memcpy(mgmt->bssid, dst, ETH_ALEN);
2128         }
2129
2130         IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
2131
2132         return skb;
2133 }
2134
2135 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
2136                             struct ieee802_11_elems *elems,
2137                             enum nl80211_band band, u32 *basic_rates)
2138 {
2139         struct ieee80211_supported_band *sband;
2140         size_t num_rates;
2141         u32 supp_rates, rate_flags;
2142         int i, j, shift;
2143
2144         sband = sdata->local->hw.wiphy->bands[band];
2145         if (WARN_ON(!sband))
2146                 return 1;
2147
2148         rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef);
2149         shift = ieee80211_vif_get_shift(&sdata->vif);
2150
2151         num_rates = sband->n_bitrates;
2152         supp_rates = 0;
2153         for (i = 0; i < elems->supp_rates_len +
2154                      elems->ext_supp_rates_len; i++) {
2155                 u8 rate = 0;
2156                 int own_rate;
2157                 bool is_basic;
2158                 if (i < elems->supp_rates_len)
2159                         rate = elems->supp_rates[i];
2160                 else if (elems->ext_supp_rates)
2161                         rate = elems->ext_supp_rates
2162                                 [i - elems->supp_rates_len];
2163                 own_rate = 5 * (rate & 0x7f);
2164                 is_basic = !!(rate & 0x80);
2165
2166                 if (is_basic && (rate & 0x7f) == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
2167                         continue;
2168
2169                 for (j = 0; j < num_rates; j++) {
2170                         int brate;
2171                         if ((rate_flags & sband->bitrates[j].flags)
2172                             != rate_flags)
2173                                 continue;
2174
2175                         brate = DIV_ROUND_UP(sband->bitrates[j].bitrate,
2176                                              1 << shift);
2177
2178                         if (brate == own_rate) {
2179                                 supp_rates |= BIT(j);
2180                                 if (basic_rates && is_basic)
2181                                         *basic_rates |= BIT(j);
2182                         }
2183                 }
2184         }
2185         return supp_rates;
2186 }
2187
2188 void ieee80211_stop_device(struct ieee80211_local *local)
2189 {
2190         ieee80211_led_radio(local, false);
2191         ieee80211_mod_tpt_led_trig(local, 0, IEEE80211_TPT_LEDTRIG_FL_RADIO);
2192
2193         cancel_work_sync(&local->reconfig_filter);
2194
2195         flush_workqueue(local->workqueue);
2196         drv_stop(local);
2197 }
2198
2199 static void ieee80211_flush_completed_scan(struct ieee80211_local *local,
2200                                            bool aborted)
2201 {
2202         /* It's possible that we don't handle the scan completion in
2203          * time during suspend, so if it's still marked as completed
2204          * here, queue the work and flush it to clean things up.
2205          * Instead of calling the worker function directly here, we
2206          * really queue it to avoid potential races with other flows
2207          * scheduling the same work.
2208          */
2209         if (test_bit(SCAN_COMPLETED, &local->scanning)) {
2210                 /* If coming from reconfiguration failure, abort the scan so
2211                  * we don't attempt to continue a partial HW scan - which is
2212                  * possible otherwise if (e.g.) the 2.4 GHz portion was the
2213                  * completed scan, and a 5 GHz portion is still pending.
2214                  */
2215                 if (aborted)
2216                         set_bit(SCAN_ABORTED, &local->scanning);
2217                 ieee80211_queue_delayed_work(&local->hw, &local->scan_work, 0);
2218                 flush_delayed_work(&local->scan_work);
2219         }
2220 }
2221
2222 static void ieee80211_handle_reconfig_failure(struct ieee80211_local *local)
2223 {
2224         struct ieee80211_sub_if_data *sdata;
2225         struct ieee80211_chanctx *ctx;
2226
2227         /*
2228          * We get here if during resume the device can't be restarted properly.
2229          * We might also get here if this happens during HW reset, which is a
2230          * slightly different situation and we need to drop all connections in
2231          * the latter case.
2232          *
2233          * Ask cfg80211 to turn off all interfaces, this will result in more
2234          * warnings but at least we'll then get into a clean stopped state.
2235          */
2236
2237         local->resuming = false;
2238         local->suspended = false;
2239         local->in_reconfig = false;
2240
2241         ieee80211_flush_completed_scan(local, true);
2242
2243         /* scheduled scan clearly can't be running any more, but tell
2244          * cfg80211 and clear local state
2245          */
2246         ieee80211_sched_scan_end(local);
2247
2248         list_for_each_entry(sdata, &local->interfaces, list)
2249                 sdata->flags &= ~IEEE80211_SDATA_IN_DRIVER;
2250
2251         /* Mark channel contexts as not being in the driver any more to avoid
2252          * removing them from the driver during the shutdown process...
2253          */
2254         mutex_lock(&local->chanctx_mtx);
2255         list_for_each_entry(ctx, &local->chanctx_list, list)
2256                 ctx->driver_present = false;
2257         mutex_unlock(&local->chanctx_mtx);
2258 }
2259
2260 static void ieee80211_assign_chanctx(struct ieee80211_local *local,
2261                                      struct ieee80211_sub_if_data *sdata)
2262 {
2263         struct ieee80211_chanctx_conf *conf;
2264         struct ieee80211_chanctx *ctx;
2265
2266         if (!local->use_chanctx)
2267                 return;
2268
2269         mutex_lock(&local->chanctx_mtx);
2270         conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
2271                                          lockdep_is_held(&local->chanctx_mtx));
2272         if (conf) {
2273                 ctx = container_of(conf, struct ieee80211_chanctx, conf);
2274                 drv_assign_vif_chanctx(local, sdata, ctx);
2275         }
2276         mutex_unlock(&local->chanctx_mtx);
2277 }
2278
2279 static void ieee80211_reconfig_stations(struct ieee80211_sub_if_data *sdata)
2280 {
2281         struct ieee80211_local *local = sdata->local;
2282         struct sta_info *sta;
2283
2284         /* add STAs back */
2285         mutex_lock(&local->sta_mtx);
2286         list_for_each_entry(sta, &local->sta_list, list) {
2287                 enum ieee80211_sta_state state;
2288
2289                 if (!sta->uploaded || sta->sdata != sdata)
2290                         continue;
2291
2292                 for (state = IEEE80211_STA_NOTEXIST;
2293                      state < sta->sta_state; state++)
2294                         WARN_ON(drv_sta_state(local, sta->sdata, sta, state,
2295                                               state + 1));
2296         }
2297         mutex_unlock(&local->sta_mtx);
2298 }
2299
2300 static int ieee80211_reconfig_nan(struct ieee80211_sub_if_data *sdata)
2301 {
2302         struct cfg80211_nan_func *func, **funcs;
2303         int res, id, i = 0;
2304
2305         res = drv_start_nan(sdata->local, sdata,
2306                             &sdata->u.nan.conf);
2307         if (WARN_ON(res))
2308                 return res;
2309
2310         funcs = kcalloc(sdata->local->hw.max_nan_de_entries + 1,
2311                         sizeof(*funcs),
2312                         GFP_KERNEL);
2313         if (!funcs)
2314                 return -ENOMEM;
2315
2316         /* Add all the functions:
2317          * This is a little bit ugly. We need to call a potentially sleeping
2318          * callback for each NAN function, so we can't hold the spinlock.
2319          */
2320         spin_lock_bh(&sdata->u.nan.func_lock);
2321
2322         idr_for_each_entry(&sdata->u.nan.function_inst_ids, func, id)
2323                 funcs[i++] = func;
2324
2325         spin_unlock_bh(&sdata->u.nan.func_lock);
2326
2327         for (i = 0; funcs[i]; i++) {
2328                 res = drv_add_nan_func(sdata->local, sdata, funcs[i]);
2329                 if (WARN_ON(res))
2330                         ieee80211_nan_func_terminated(&sdata->vif,
2331                                                       funcs[i]->instance_id,
2332                                                       NL80211_NAN_FUNC_TERM_REASON_ERROR,
2333                                                       GFP_KERNEL);
2334         }
2335
2336         kfree(funcs);
2337
2338         return 0;
2339 }
2340
2341 int ieee80211_reconfig(struct ieee80211_local *local)
2342 {
2343         struct ieee80211_hw *hw = &local->hw;
2344         struct ieee80211_sub_if_data *sdata;
2345         struct ieee80211_chanctx *ctx;
2346         struct sta_info *sta;
2347         int res, i;
2348         bool reconfig_due_to_wowlan = false;
2349         struct ieee80211_sub_if_data *sched_scan_sdata;
2350         struct cfg80211_sched_scan_request *sched_scan_req;
2351         bool sched_scan_stopped = false;
2352         bool suspended = local->suspended;
2353         bool in_reconfig = false;
2354
2355         /* nothing to do if HW shouldn't run */
2356         if (!local->open_count)
2357                 goto wake_up;
2358
2359 #ifdef CONFIG_PM
2360         if (suspended)
2361                 local->resuming = true;
2362
2363         if (local->wowlan) {
2364                 /*
2365                  * In the wowlan case, both mac80211 and the device
2366                  * are functional when the resume op is called, so
2367                  * clear local->suspended so the device could operate
2368                  * normally (e.g. pass rx frames).
2369                  */
2370                 local->suspended = false;
2371                 res = drv_resume(local);
2372                 local->wowlan = false;
2373                 if (res < 0) {
2374                         local->resuming = false;
2375                         return res;
2376                 }
2377                 if (res == 0)
2378                         goto wake_up;
2379                 WARN_ON(res > 1);
2380                 /*
2381                  * res is 1, which means the driver requested
2382                  * to go through a regular reset on wakeup.
2383                  * restore local->suspended in this case.
2384                  */
2385                 reconfig_due_to_wowlan = true;
2386                 local->suspended = true;
2387         }
2388 #endif
2389
2390         /*
2391          * In case of hw_restart during suspend (without wowlan),
2392          * cancel restart work, as we are reconfiguring the device
2393          * anyway.
2394          * Note that restart_work is scheduled on a frozen workqueue,
2395          * so we can't deadlock in this case.
2396          */
2397         if (suspended && local->in_reconfig && !reconfig_due_to_wowlan)
2398                 cancel_work_sync(&local->restart_work);
2399
2400         local->started = false;
2401
2402         /*
2403          * Upon resume hardware can sometimes be goofy due to
2404          * various platform / driver / bus issues, so restarting
2405          * the device may at times not work immediately. Propagate
2406          * the error.
2407          */
2408         res = drv_start(local);
2409         if (res) {
2410                 if (suspended)
2411                         WARN(1, "Hardware became unavailable upon resume. This could be a software issue prior to suspend or a hardware issue.\n");
2412                 else
2413                         WARN(1, "Hardware became unavailable during restart.\n");
2414                 ieee80211_handle_reconfig_failure(local);
2415                 return res;
2416         }
2417
2418         /* setup fragmentation threshold */
2419         drv_set_frag_threshold(local, hw->wiphy->frag_threshold);
2420
2421         /* setup RTS threshold */
2422         drv_set_rts_threshold(local, hw->wiphy->rts_threshold);
2423
2424         /* reset coverage class */
2425         drv_set_coverage_class(local, hw->wiphy->coverage_class);
2426
2427         ieee80211_led_radio(local, true);
2428         ieee80211_mod_tpt_led_trig(local,
2429                                    IEEE80211_TPT_LEDTRIG_FL_RADIO, 0);
2430
2431         /* add interfaces */
2432         sdata = wiphy_dereference(local->hw.wiphy, local->monitor_sdata);
2433         if (sdata) {
2434                 /* in HW restart it exists already */
2435                 WARN_ON(local->resuming);
2436                 res = drv_add_interface(local, sdata);
2437                 if (WARN_ON(res)) {
2438                         RCU_INIT_POINTER(local->monitor_sdata, NULL);
2439                         synchronize_net();
2440                         kfree(sdata);
2441                 }
2442         }
2443
2444         list_for_each_entry(sdata, &local->interfaces, list) {
2445                 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
2446                     sdata->vif.type != NL80211_IFTYPE_MONITOR &&
2447                     ieee80211_sdata_running(sdata)) {
2448                         res = drv_add_interface(local, sdata);
2449                         if (WARN_ON(res))
2450                                 break;
2451                 }
2452         }
2453
2454         /* If adding any of the interfaces failed above, roll back and
2455          * report failure.
2456          */
2457         if (res) {
2458                 list_for_each_entry_continue_reverse(sdata, &local->interfaces,
2459                                                      list)
2460                         if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
2461                             sdata->vif.type != NL80211_IFTYPE_MONITOR &&
2462                             ieee80211_sdata_running(sdata))
2463                                 drv_remove_interface(local, sdata);
2464                 ieee80211_handle_reconfig_failure(local);
2465                 return res;
2466         }
2467
2468         /* add channel contexts */
2469         if (local->use_chanctx) {
2470                 mutex_lock(&local->chanctx_mtx);
2471                 list_for_each_entry(ctx, &local->chanctx_list, list)
2472                         if (ctx->replace_state !=
2473                             IEEE80211_CHANCTX_REPLACES_OTHER)
2474                                 WARN_ON(drv_add_chanctx(local, ctx));
2475                 mutex_unlock(&local->chanctx_mtx);
2476
2477                 sdata = wiphy_dereference(local->hw.wiphy,
2478                                           local->monitor_sdata);
2479                 if (sdata && ieee80211_sdata_running(sdata))
2480                         ieee80211_assign_chanctx(local, sdata);
2481         }
2482
2483         /* reconfigure hardware */
2484         ieee80211_hw_config(local, ~0);
2485
2486         ieee80211_configure_filter(local);
2487
2488         /* Finally also reconfigure all the BSS information */
2489         list_for_each_entry(sdata, &local->interfaces, list) {
2490                 u32 changed;
2491
2492                 if (!ieee80211_sdata_running(sdata))
2493                         continue;
2494
2495                 ieee80211_assign_chanctx(local, sdata);
2496
2497                 switch (sdata->vif.type) {
2498                 case NL80211_IFTYPE_AP_VLAN:
2499                 case NL80211_IFTYPE_MONITOR:
2500                         break;
2501                 case NL80211_IFTYPE_ADHOC:
2502                         if (sdata->vif.bss_conf.ibss_joined)
2503                                 WARN_ON(drv_join_ibss(local, sdata));
2504                         fallthrough;
2505                 default:
2506                         ieee80211_reconfig_stations(sdata);
2507                         fallthrough;
2508                 case NL80211_IFTYPE_AP: /* AP stations are handled later */
2509                         for (i = 0; i < IEEE80211_NUM_ACS; i++)
2510                                 drv_conf_tx(local, sdata, i,
2511                                             &sdata->tx_conf[i]);
2512                         break;
2513                 }
2514
2515                 /* common change flags for all interface types */
2516                 changed = BSS_CHANGED_ERP_CTS_PROT |
2517                           BSS_CHANGED_ERP_PREAMBLE |
2518                           BSS_CHANGED_ERP_SLOT |
2519                           BSS_CHANGED_HT |
2520                           BSS_CHANGED_BASIC_RATES |
2521                           BSS_CHANGED_BEACON_INT |
2522                           BSS_CHANGED_BSSID |
2523                           BSS_CHANGED_CQM |
2524                           BSS_CHANGED_QOS |
2525                           BSS_CHANGED_IDLE |
2526                           BSS_CHANGED_TXPOWER |
2527                           BSS_CHANGED_MCAST_RATE;
2528
2529                 if (sdata->vif.mu_mimo_owner)
2530                         changed |= BSS_CHANGED_MU_GROUPS;
2531
2532                 switch (sdata->vif.type) {
2533                 case NL80211_IFTYPE_STATION:
2534                         changed |= BSS_CHANGED_ASSOC |
2535                                    BSS_CHANGED_ARP_FILTER |
2536                                    BSS_CHANGED_PS;
2537
2538                         /* Re-send beacon info report to the driver */
2539                         if (sdata->u.mgd.have_beacon)
2540                                 changed |= BSS_CHANGED_BEACON_INFO;
2541
2542                         if (sdata->vif.bss_conf.max_idle_period ||
2543                             sdata->vif.bss_conf.protected_keep_alive)
2544                                 changed |= BSS_CHANGED_KEEP_ALIVE;
2545
2546                         sdata_lock(sdata);
2547                         ieee80211_bss_info_change_notify(sdata, changed);
2548                         sdata_unlock(sdata);
2549                         break;
2550                 case NL80211_IFTYPE_OCB:
2551                         changed |= BSS_CHANGED_OCB;
2552                         ieee80211_bss_info_change_notify(sdata, changed);
2553                         break;
2554                 case NL80211_IFTYPE_ADHOC:
2555                         changed |= BSS_CHANGED_IBSS;
2556                         fallthrough;
2557                 case NL80211_IFTYPE_AP:
2558                         changed |= BSS_CHANGED_SSID | BSS_CHANGED_P2P_PS;
2559
2560                         if (sdata->vif.bss_conf.ftm_responder == 1 &&
2561                             wiphy_ext_feature_isset(sdata->local->hw.wiphy,
2562                                         NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER))
2563                                 changed |= BSS_CHANGED_FTM_RESPONDER;
2564
2565                         if (sdata->vif.type == NL80211_IFTYPE_AP) {
2566                                 changed |= BSS_CHANGED_AP_PROBE_RESP;
2567
2568                                 if (rcu_access_pointer(sdata->u.ap.beacon))
2569                                         drv_start_ap(local, sdata);
2570                         }
2571                         fallthrough;
2572                 case NL80211_IFTYPE_MESH_POINT:
2573                         if (sdata->vif.bss_conf.enable_beacon) {
2574                                 changed |= BSS_CHANGED_BEACON |
2575                                            BSS_CHANGED_BEACON_ENABLED;
2576                                 ieee80211_bss_info_change_notify(sdata, changed);
2577                         }
2578                         break;
2579                 case NL80211_IFTYPE_NAN:
2580                         res = ieee80211_reconfig_nan(sdata);
2581                         if (res < 0) {
2582                                 ieee80211_handle_reconfig_failure(local);
2583                                 return res;
2584                         }
2585                         break;
2586                 case NL80211_IFTYPE_AP_VLAN:
2587                 case NL80211_IFTYPE_MONITOR:
2588                 case NL80211_IFTYPE_P2P_DEVICE:
2589                         /* nothing to do */
2590                         break;
2591                 case NL80211_IFTYPE_UNSPECIFIED:
2592                 case NUM_NL80211_IFTYPES:
2593                 case NL80211_IFTYPE_P2P_CLIENT:
2594                 case NL80211_IFTYPE_P2P_GO:
2595                 case NL80211_IFTYPE_WDS:
2596                         WARN_ON(1);
2597                         break;
2598                 }
2599         }
2600
2601         ieee80211_recalc_ps(local);
2602
2603         /*
2604          * The sta might be in psm against the ap (e.g. because
2605          * this was the state before a hw restart), so we
2606          * explicitly send a null packet in order to make sure
2607          * it'll sync against the ap (and get out of psm).
2608          */
2609         if (!(local->hw.conf.flags & IEEE80211_CONF_PS)) {
2610                 list_for_each_entry(sdata, &local->interfaces, list) {
2611                         if (sdata->vif.type != NL80211_IFTYPE_STATION)
2612                                 continue;
2613                         if (!sdata->u.mgd.associated)
2614                                 continue;
2615
2616                         ieee80211_send_nullfunc(local, sdata, false);
2617                 }
2618         }
2619
2620         /* APs are now beaconing, add back stations */
2621         mutex_lock(&local->sta_mtx);
2622         list_for_each_entry(sta, &local->sta_list, list) {
2623                 enum ieee80211_sta_state state;
2624
2625                 if (!sta->uploaded)
2626                         continue;
2627
2628                 if (sta->sdata->vif.type != NL80211_IFTYPE_AP &&
2629                     sta->sdata->vif.type != NL80211_IFTYPE_AP_VLAN)
2630                         continue;
2631
2632                 for (state = IEEE80211_STA_NOTEXIST;
2633                      state < sta->sta_state; state++)
2634                         WARN_ON(drv_sta_state(local, sta->sdata, sta, state,
2635                                               state + 1));
2636         }
2637         mutex_unlock(&local->sta_mtx);
2638
2639         /* add back keys */
2640         list_for_each_entry(sdata, &local->interfaces, list)
2641                 ieee80211_reenable_keys(sdata);
2642
2643         /* Reconfigure sched scan if it was interrupted by FW restart */
2644         mutex_lock(&local->mtx);
2645         sched_scan_sdata = rcu_dereference_protected(local->sched_scan_sdata,
2646                                                 lockdep_is_held(&local->mtx));
2647         sched_scan_req = rcu_dereference_protected(local->sched_scan_req,
2648                                                 lockdep_is_held(&local->mtx));
2649         if (sched_scan_sdata && sched_scan_req)
2650                 /*
2651                  * Sched scan stopped, but we don't want to report it. Instead,
2652                  * we're trying to reschedule. However, if more than one scan
2653                  * plan was set, we cannot reschedule since we don't know which
2654                  * scan plan was currently running (and some scan plans may have
2655                  * already finished).
2656                  */
2657                 if (sched_scan_req->n_scan_plans > 1 ||
2658                     __ieee80211_request_sched_scan_start(sched_scan_sdata,
2659                                                          sched_scan_req)) {
2660                         RCU_INIT_POINTER(local->sched_scan_sdata, NULL);
2661                         RCU_INIT_POINTER(local->sched_scan_req, NULL);
2662                         sched_scan_stopped = true;
2663                 }
2664         mutex_unlock(&local->mtx);
2665
2666         if (sched_scan_stopped)
2667                 cfg80211_sched_scan_stopped_locked(local->hw.wiphy, 0);
2668
2669  wake_up:
2670
2671         if (local->monitors == local->open_count && local->monitors > 0)
2672                 ieee80211_add_virtual_monitor(local);
2673
2674         /*
2675          * Clear the WLAN_STA_BLOCK_BA flag so new aggregation
2676          * sessions can be established after a resume.
2677          *
2678          * Also tear down aggregation sessions since reconfiguring
2679          * them in a hardware restart scenario is not easily done
2680          * right now, and the hardware will have lost information
2681          * about the sessions, but we and the AP still think they
2682          * are active. This is really a workaround though.
2683          */
2684         if (ieee80211_hw_check(hw, AMPDU_AGGREGATION)) {
2685                 mutex_lock(&local->sta_mtx);
2686
2687                 list_for_each_entry(sta, &local->sta_list, list) {
2688                         if (!local->resuming)
2689                                 ieee80211_sta_tear_down_BA_sessions(
2690                                                 sta, AGG_STOP_LOCAL_REQUEST);
2691                         clear_sta_flag(sta, WLAN_STA_BLOCK_BA);
2692                 }
2693
2694                 mutex_unlock(&local->sta_mtx);
2695         }
2696
2697         /*
2698          * If this is for hw restart things are still running.
2699          * We may want to change that later, however.
2700          */
2701         if (local->open_count && (!suspended || reconfig_due_to_wowlan))
2702                 drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_RESTART);
2703
2704         if (local->in_reconfig) {
2705                 in_reconfig = local->in_reconfig;
2706                 local->in_reconfig = false;
2707                 barrier();
2708
2709                 /* Restart deferred ROCs */
2710                 mutex_lock(&local->mtx);
2711                 ieee80211_start_next_roc(local);
2712                 mutex_unlock(&local->mtx);
2713
2714                 /* Requeue all works */
2715                 list_for_each_entry(sdata, &local->interfaces, list)
2716                         ieee80211_queue_work(&local->hw, &sdata->work);
2717         }
2718
2719         ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
2720                                         IEEE80211_QUEUE_STOP_REASON_SUSPEND,
2721                                         false);
2722
2723         if (in_reconfig) {
2724                 list_for_each_entry(sdata, &local->interfaces, list) {
2725                         if (!ieee80211_sdata_running(sdata))
2726                                 continue;
2727                         if (sdata->vif.type == NL80211_IFTYPE_STATION)
2728                                 ieee80211_sta_restart(sdata);
2729                 }
2730         }
2731
2732         if (!suspended)
2733                 return 0;
2734
2735 #ifdef CONFIG_PM
2736         /* first set suspended false, then resuming */
2737         local->suspended = false;
2738         mb();
2739         local->resuming = false;
2740
2741         ieee80211_flush_completed_scan(local, false);
2742
2743         if (local->open_count && !reconfig_due_to_wowlan)
2744                 drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_SUSPEND);
2745
2746         list_for_each_entry(sdata, &local->interfaces, list) {
2747                 if (!ieee80211_sdata_running(sdata))
2748                         continue;
2749                 if (sdata->vif.type == NL80211_IFTYPE_STATION)
2750                         ieee80211_sta_restart(sdata);
2751         }
2752
2753         mod_timer(&local->sta_cleanup, jiffies + 1);
2754 #else
2755         WARN_ON(1);
2756 #endif
2757
2758         return 0;
2759 }
2760
2761 static void ieee80211_reconfig_disconnect(struct ieee80211_vif *vif, u8 flag)
2762 {
2763         struct ieee80211_sub_if_data *sdata;
2764         struct ieee80211_local *local;
2765         struct ieee80211_key *key;
2766
2767         if (WARN_ON(!vif))
2768                 return;
2769
2770         sdata = vif_to_sdata(vif);
2771         local = sdata->local;
2772
2773         if (WARN_ON(flag & IEEE80211_SDATA_DISCONNECT_RESUME &&
2774                     !local->resuming))
2775                 return;
2776
2777         if (WARN_ON(flag & IEEE80211_SDATA_DISCONNECT_HW_RESTART &&
2778                     !local->in_reconfig))
2779                 return;
2780
2781         if (WARN_ON(vif->type != NL80211_IFTYPE_STATION))
2782                 return;
2783
2784         sdata->flags |= flag;
2785
2786         mutex_lock(&local->key_mtx);
2787         list_for_each_entry(key, &sdata->key_list, list)
2788                 key->flags |= KEY_FLAG_TAINTED;
2789         mutex_unlock(&local->key_mtx);
2790 }
2791
2792 void ieee80211_hw_restart_disconnect(struct ieee80211_vif *vif)
2793 {
2794         ieee80211_reconfig_disconnect(vif, IEEE80211_SDATA_DISCONNECT_HW_RESTART);
2795 }
2796 EXPORT_SYMBOL_GPL(ieee80211_hw_restart_disconnect);
2797
2798 void ieee80211_resume_disconnect(struct ieee80211_vif *vif)
2799 {
2800         ieee80211_reconfig_disconnect(vif, IEEE80211_SDATA_DISCONNECT_RESUME);
2801 }
2802 EXPORT_SYMBOL_GPL(ieee80211_resume_disconnect);
2803
2804 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata)
2805 {
2806         struct ieee80211_local *local = sdata->local;
2807         struct ieee80211_chanctx_conf *chanctx_conf;
2808         struct ieee80211_chanctx *chanctx;
2809
2810         mutex_lock(&local->chanctx_mtx);
2811
2812         chanctx_conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
2813                                         lockdep_is_held(&local->chanctx_mtx));
2814
2815         /*
2816          * This function can be called from a work, thus it may be possible
2817          * that the chanctx_conf is removed (due to a disconnection, for
2818          * example).
2819          * So nothing should be done in such case.
2820          */
2821         if (!chanctx_conf)
2822                 goto unlock;
2823
2824         chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf);
2825         ieee80211_recalc_smps_chanctx(local, chanctx);
2826  unlock:
2827         mutex_unlock(&local->chanctx_mtx);
2828 }
2829
2830 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata)
2831 {
2832         struct ieee80211_local *local = sdata->local;
2833         struct ieee80211_chanctx_conf *chanctx_conf;
2834         struct ieee80211_chanctx *chanctx;
2835
2836         mutex_lock(&local->chanctx_mtx);
2837
2838         chanctx_conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
2839                                         lockdep_is_held(&local->chanctx_mtx));
2840
2841         if (WARN_ON_ONCE(!chanctx_conf))
2842                 goto unlock;
2843
2844         chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf);
2845         ieee80211_recalc_chanctx_min_def(local, chanctx);
2846  unlock:
2847         mutex_unlock(&local->chanctx_mtx);
2848 }
2849
2850 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset)
2851 {
2852         size_t pos = offset;
2853
2854         while (pos < ielen && ies[pos] != WLAN_EID_VENDOR_SPECIFIC)
2855                 pos += 2 + ies[pos + 1];
2856
2857         return pos;
2858 }
2859
2860 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
2861                               u16 cap)
2862 {
2863         __le16 tmp;
2864
2865         *pos++ = WLAN_EID_HT_CAPABILITY;
2866         *pos++ = sizeof(struct ieee80211_ht_cap);
2867         memset(pos, 0, sizeof(struct ieee80211_ht_cap));
2868
2869         /* capability flags */
2870         tmp = cpu_to_le16(cap);
2871         memcpy(pos, &tmp, sizeof(u16));
2872         pos += sizeof(u16);
2873
2874         /* AMPDU parameters */
2875         *pos++ = ht_cap->ampdu_factor |
2876                  (ht_cap->ampdu_density <<
2877                         IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT);
2878
2879         /* MCS set */
2880         memcpy(pos, &ht_cap->mcs, sizeof(ht_cap->mcs));
2881         pos += sizeof(ht_cap->mcs);
2882
2883         /* extended capabilities */
2884         pos += sizeof(__le16);
2885
2886         /* BF capabilities */
2887         pos += sizeof(__le32);
2888
2889         /* antenna selection */
2890         pos += sizeof(u8);
2891
2892         return pos;
2893 }
2894
2895 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
2896                                u32 cap)
2897 {
2898         __le32 tmp;
2899
2900         *pos++ = WLAN_EID_VHT_CAPABILITY;
2901         *pos++ = sizeof(struct ieee80211_vht_cap);
2902         memset(pos, 0, sizeof(struct ieee80211_vht_cap));
2903
2904         /* capability flags */
2905         tmp = cpu_to_le32(cap);
2906         memcpy(pos, &tmp, sizeof(u32));
2907         pos += sizeof(u32);
2908
2909         /* VHT MCS set */
2910         memcpy(pos, &vht_cap->vht_mcs, sizeof(vht_cap->vht_mcs));
2911         pos += sizeof(vht_cap->vht_mcs);
2912
2913         return pos;
2914 }
2915
2916 u8 ieee80211_ie_len_he_cap(struct ieee80211_sub_if_data *sdata, u8 iftype)
2917 {
2918         const struct ieee80211_sta_he_cap *he_cap;
2919         struct ieee80211_supported_band *sband;
2920         u8 n;
2921
2922         sband = ieee80211_get_sband(sdata);
2923         if (!sband)
2924                 return 0;
2925
2926         he_cap = ieee80211_get_he_iftype_cap(sband, iftype);
2927         if (!he_cap)
2928                 return 0;
2929
2930         n = ieee80211_he_mcs_nss_size(&he_cap->he_cap_elem);
2931         return 2 + 1 +
2932                sizeof(he_cap->he_cap_elem) + n +
2933                ieee80211_he_ppe_size(he_cap->ppe_thres[0],
2934                                      he_cap->he_cap_elem.phy_cap_info);
2935 }
2936
2937 u8 *ieee80211_ie_build_he_cap(u32 disable_flags, u8 *pos,
2938                               const struct ieee80211_sta_he_cap *he_cap,
2939                               u8 *end)
2940 {
2941         struct ieee80211_he_cap_elem elem;
2942         u8 n;
2943         u8 ie_len;
2944         u8 *orig_pos = pos;
2945
2946         /* Make sure we have place for the IE */
2947         /*
2948          * TODO: the 1 added is because this temporarily is under the EXTENSION
2949          * IE. Get rid of it when it moves.
2950          */
2951         if (!he_cap)
2952                 return orig_pos;
2953
2954         /* modify on stack first to calculate 'n' and 'ie_len' correctly */
2955         elem = he_cap->he_cap_elem;
2956
2957         if (disable_flags & IEEE80211_STA_DISABLE_40MHZ)
2958                 elem.phy_cap_info[0] &=
2959                         ~(IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G |
2960                           IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_IN_2G);
2961
2962         if (disable_flags & IEEE80211_STA_DISABLE_160MHZ)
2963                 elem.phy_cap_info[0] &=
2964                         ~IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G;
2965
2966         if (disable_flags & IEEE80211_STA_DISABLE_80P80MHZ)
2967                 elem.phy_cap_info[0] &=
2968                         ~IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G;
2969
2970         n = ieee80211_he_mcs_nss_size(&elem);
2971         ie_len = 2 + 1 +
2972                  sizeof(he_cap->he_cap_elem) + n +
2973                  ieee80211_he_ppe_size(he_cap->ppe_thres[0],
2974                                        he_cap->he_cap_elem.phy_cap_info);
2975
2976         if ((end - pos) < ie_len)
2977                 return orig_pos;
2978
2979         *pos++ = WLAN_EID_EXTENSION;
2980         pos++; /* We'll set the size later below */
2981         *pos++ = WLAN_EID_EXT_HE_CAPABILITY;
2982
2983         /* Fixed data */
2984         memcpy(pos, &elem, sizeof(elem));
2985         pos += sizeof(elem);
2986
2987         memcpy(pos, &he_cap->he_mcs_nss_supp, n);
2988         pos += n;
2989
2990         /* Check if PPE Threshold should be present */
2991         if ((he_cap->he_cap_elem.phy_cap_info[6] &
2992              IEEE80211_HE_PHY_CAP6_PPE_THRESHOLD_PRESENT) == 0)
2993                 goto end;
2994
2995         /*
2996          * Calculate how many PPET16/PPET8 pairs are to come. Algorithm:
2997          * (NSS_M1 + 1) x (num of 1 bits in RU_INDEX_BITMASK)
2998          */
2999         n = hweight8(he_cap->ppe_thres[0] &
3000                      IEEE80211_PPE_THRES_RU_INDEX_BITMASK_MASK);
3001         n *= (1 + ((he_cap->ppe_thres[0] & IEEE80211_PPE_THRES_NSS_MASK) >>
3002                    IEEE80211_PPE_THRES_NSS_POS));
3003
3004         /*
3005          * Each pair is 6 bits, and we need to add the 7 "header" bits to the
3006          * total size.
3007          */
3008         n = (n * IEEE80211_PPE_THRES_INFO_PPET_SIZE * 2) + 7;
3009         n = DIV_ROUND_UP(n, 8);
3010
3011         /* Copy PPE Thresholds */
3012         memcpy(pos, &he_cap->ppe_thres, n);
3013         pos += n;
3014
3015 end:
3016         orig_pos[1] = (pos - orig_pos) - 2;
3017         return pos;
3018 }
3019
3020 void ieee80211_ie_build_he_6ghz_cap(struct ieee80211_sub_if_data *sdata,
3021                                     struct sk_buff *skb)
3022 {
3023         struct ieee80211_supported_band *sband;
3024         const struct ieee80211_sband_iftype_data *iftd;
3025         enum nl80211_iftype iftype = ieee80211_vif_type_p2p(&sdata->vif);
3026         u8 *pos;
3027         u16 cap;
3028
3029         if (!cfg80211_any_usable_channels(sdata->local->hw.wiphy,
3030                                           BIT(NL80211_BAND_6GHZ),
3031                                           IEEE80211_CHAN_NO_HE))
3032                 return;
3033
3034         sband = sdata->local->hw.wiphy->bands[NL80211_BAND_6GHZ];
3035
3036         iftd = ieee80211_get_sband_iftype_data(sband, iftype);
3037         if (!iftd)
3038                 return;
3039
3040         /* Check for device HE 6 GHz capability before adding element */
3041         if (!iftd->he_6ghz_capa.capa)
3042                 return;
3043
3044         cap = le16_to_cpu(iftd->he_6ghz_capa.capa);
3045         cap &= ~IEEE80211_HE_6GHZ_CAP_SM_PS;
3046
3047         switch (sdata->smps_mode) {
3048         case IEEE80211_SMPS_AUTOMATIC:
3049         case IEEE80211_SMPS_NUM_MODES:
3050                 WARN_ON(1);
3051                 fallthrough;
3052         case IEEE80211_SMPS_OFF:
3053                 cap |= u16_encode_bits(WLAN_HT_CAP_SM_PS_DISABLED,
3054                                        IEEE80211_HE_6GHZ_CAP_SM_PS);
3055                 break;
3056         case IEEE80211_SMPS_STATIC:
3057                 cap |= u16_encode_bits(WLAN_HT_CAP_SM_PS_STATIC,
3058                                        IEEE80211_HE_6GHZ_CAP_SM_PS);
3059                 break;
3060         case IEEE80211_SMPS_DYNAMIC:
3061                 cap |= u16_encode_bits(WLAN_HT_CAP_SM_PS_DYNAMIC,
3062                                        IEEE80211_HE_6GHZ_CAP_SM_PS);
3063                 break;
3064         }
3065
3066         pos = skb_put(skb, 2 + 1 + sizeof(cap));
3067         ieee80211_write_he_6ghz_cap(pos, cpu_to_le16(cap),
3068                                     pos + 2 + 1 + sizeof(cap));
3069 }
3070
3071 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
3072                                const struct cfg80211_chan_def *chandef,
3073                                u16 prot_mode, bool rifs_mode)
3074 {
3075         struct ieee80211_ht_operation *ht_oper;
3076         /* Build HT Information */
3077         *pos++ = WLAN_EID_HT_OPERATION;
3078         *pos++ = sizeof(struct ieee80211_ht_operation);
3079         ht_oper = (struct ieee80211_ht_operation *)pos;
3080         ht_oper->primary_chan = ieee80211_frequency_to_channel(
3081                                         chandef->chan->center_freq);
3082         switch (chandef->width) {
3083         case NL80211_CHAN_WIDTH_160:
3084         case NL80211_CHAN_WIDTH_80P80:
3085         case NL80211_CHAN_WIDTH_80:
3086         case NL80211_CHAN_WIDTH_40:
3087                 if (chandef->center_freq1 > chandef->chan->center_freq)
3088                         ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
3089                 else
3090                         ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
3091                 break;
3092         case NL80211_CHAN_WIDTH_320:
3093                 /* HT information element should not be included on 6GHz */
3094                 WARN_ON(1);
3095                 return pos;
3096         default:
3097                 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_NONE;
3098                 break;
3099         }
3100         if (ht_cap->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 &&
3101             chandef->width != NL80211_CHAN_WIDTH_20_NOHT &&
3102             chandef->width != NL80211_CHAN_WIDTH_20)
3103                 ht_oper->ht_param |= IEEE80211_HT_PARAM_CHAN_WIDTH_ANY;
3104
3105         if (rifs_mode)
3106                 ht_oper->ht_param |= IEEE80211_HT_PARAM_RIFS_MODE;
3107
3108         ht_oper->operation_mode = cpu_to_le16(prot_mode);
3109         ht_oper->stbc_param = 0x0000;
3110
3111         /* It seems that Basic MCS set and Supported MCS set
3112            are identical for the first 10 bytes */
3113         memset(&ht_oper->basic_set, 0, 16);
3114         memcpy(&ht_oper->basic_set, &ht_cap->mcs, 10);
3115
3116         return pos + sizeof(struct ieee80211_ht_operation);
3117 }
3118
3119 void ieee80211_ie_build_wide_bw_cs(u8 *pos,
3120                                    const struct cfg80211_chan_def *chandef)
3121 {
3122         *pos++ = WLAN_EID_WIDE_BW_CHANNEL_SWITCH;       /* EID */
3123         *pos++ = 3;                                     /* IE length */
3124         /* New channel width */
3125         switch (chandef->width) {
3126         case NL80211_CHAN_WIDTH_80:
3127                 *pos++ = IEEE80211_VHT_CHANWIDTH_80MHZ;
3128                 break;
3129         case NL80211_CHAN_WIDTH_160:
3130                 *pos++ = IEEE80211_VHT_CHANWIDTH_160MHZ;
3131                 break;
3132         case NL80211_CHAN_WIDTH_80P80:
3133                 *pos++ = IEEE80211_VHT_CHANWIDTH_80P80MHZ;
3134                 break;
3135         case NL80211_CHAN_WIDTH_320:
3136                 /* The behavior is not defined for 320 MHz channels */
3137                 WARN_ON(1);
3138                 fallthrough;
3139         default:
3140                 *pos++ = IEEE80211_VHT_CHANWIDTH_USE_HT;
3141         }
3142
3143         /* new center frequency segment 0 */
3144         *pos++ = ieee80211_frequency_to_channel(chandef->center_freq1);
3145         /* new center frequency segment 1 */
3146         if (chandef->center_freq2)
3147                 *pos++ = ieee80211_frequency_to_channel(chandef->center_freq2);
3148         else
3149                 *pos++ = 0;
3150 }
3151
3152 u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
3153                                 const struct cfg80211_chan_def *chandef)
3154 {
3155         struct ieee80211_vht_operation *vht_oper;
3156
3157         *pos++ = WLAN_EID_VHT_OPERATION;
3158         *pos++ = sizeof(struct ieee80211_vht_operation);
3159         vht_oper = (struct ieee80211_vht_operation *)pos;
3160         vht_oper->center_freq_seg0_idx = ieee80211_frequency_to_channel(
3161                                                         chandef->center_freq1);
3162         if (chandef->center_freq2)
3163                 vht_oper->center_freq_seg1_idx =
3164                         ieee80211_frequency_to_channel(chandef->center_freq2);
3165         else
3166                 vht_oper->center_freq_seg1_idx = 0x00;
3167
3168         switch (chandef->width) {
3169         case NL80211_CHAN_WIDTH_160:
3170                 /*
3171                  * Convert 160 MHz channel width to new style as interop
3172                  * workaround.
3173                  */
3174                 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ;
3175                 vht_oper->center_freq_seg1_idx = vht_oper->center_freq_seg0_idx;
3176                 if (chandef->chan->center_freq < chandef->center_freq1)
3177                         vht_oper->center_freq_seg0_idx -= 8;
3178                 else
3179                         vht_oper->center_freq_seg0_idx += 8;
3180                 break;
3181         case NL80211_CHAN_WIDTH_80P80:
3182                 /*
3183                  * Convert 80+80 MHz channel width to new style as interop
3184                  * workaround.
3185                  */
3186                 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ;
3187                 break;
3188         case NL80211_CHAN_WIDTH_80:
3189                 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ;
3190                 break;
3191         case NL80211_CHAN_WIDTH_320:
3192                 /* VHT information element should not be included on 6GHz */
3193                 WARN_ON(1);
3194                 return pos;
3195         default:
3196                 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_USE_HT;
3197                 break;
3198         }
3199
3200         /* don't require special VHT peer rates */
3201         vht_oper->basic_mcs_set = cpu_to_le16(0xffff);
3202
3203         return pos + sizeof(struct ieee80211_vht_operation);
3204 }
3205
3206 u8 *ieee80211_ie_build_he_oper(u8 *pos, struct cfg80211_chan_def *chandef)
3207 {
3208         struct ieee80211_he_operation *he_oper;
3209         struct ieee80211_he_6ghz_oper *he_6ghz_op;
3210         u32 he_oper_params;
3211         u8 ie_len = 1 + sizeof(struct ieee80211_he_operation);
3212
3213         if (chandef->chan->band == NL80211_BAND_6GHZ)
3214                 ie_len += sizeof(struct ieee80211_he_6ghz_oper);
3215
3216         *pos++ = WLAN_EID_EXTENSION;
3217         *pos++ = ie_len;
3218         *pos++ = WLAN_EID_EXT_HE_OPERATION;
3219
3220         he_oper_params = 0;
3221         he_oper_params |= u32_encode_bits(1023, /* disabled */
3222                                 IEEE80211_HE_OPERATION_RTS_THRESHOLD_MASK);
3223         he_oper_params |= u32_encode_bits(1,
3224                                 IEEE80211_HE_OPERATION_ER_SU_DISABLE);
3225         he_oper_params |= u32_encode_bits(1,
3226                                 IEEE80211_HE_OPERATION_BSS_COLOR_DISABLED);
3227         if (chandef->chan->band == NL80211_BAND_6GHZ)
3228                 he_oper_params |= u32_encode_bits(1,
3229                                 IEEE80211_HE_OPERATION_6GHZ_OP_INFO);
3230
3231         he_oper = (struct ieee80211_he_operation *)pos;
3232         he_oper->he_oper_params = cpu_to_le32(he_oper_params);
3233
3234         /* don't require special HE peer rates */
3235         he_oper->he_mcs_nss_set = cpu_to_le16(0xffff);
3236         pos += sizeof(struct ieee80211_he_operation);
3237
3238         if (chandef->chan->band != NL80211_BAND_6GHZ)
3239                 goto out;
3240
3241         /* TODO add VHT operational */
3242         he_6ghz_op = (struct ieee80211_he_6ghz_oper *)pos;
3243         he_6ghz_op->minrate = 6; /* 6 Mbps */
3244         he_6ghz_op->primary =
3245                 ieee80211_frequency_to_channel(chandef->chan->center_freq);
3246         he_6ghz_op->ccfs0 =
3247                 ieee80211_frequency_to_channel(chandef->center_freq1);
3248         if (chandef->center_freq2)
3249                 he_6ghz_op->ccfs1 =
3250                         ieee80211_frequency_to_channel(chandef->center_freq2);
3251         else
3252                 he_6ghz_op->ccfs1 = 0;
3253
3254         switch (chandef->width) {
3255         case NL80211_CHAN_WIDTH_320:
3256                 /*
3257                  * TODO: mesh operation is not defined over 6GHz 320 MHz
3258                  * channels.
3259                  */
3260                 WARN_ON(1);
3261                 break;
3262         case NL80211_CHAN_WIDTH_160:
3263                 /* Convert 160 MHz channel width to new style as interop
3264                  * workaround.
3265                  */
3266                 he_6ghz_op->control =
3267                         IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_160MHZ;
3268                 he_6ghz_op->ccfs1 = he_6ghz_op->ccfs0;
3269                 if (chandef->chan->center_freq < chandef->center_freq1)
3270                         he_6ghz_op->ccfs0 -= 8;
3271                 else
3272                         he_6ghz_op->ccfs0 += 8;
3273                 fallthrough;
3274         case NL80211_CHAN_WIDTH_80P80:
3275                 he_6ghz_op->control =
3276                         IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_160MHZ;
3277                 break;
3278         case NL80211_CHAN_WIDTH_80:
3279                 he_6ghz_op->control =
3280                         IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_80MHZ;
3281                 break;
3282         case NL80211_CHAN_WIDTH_40:
3283                 he_6ghz_op->control =
3284                         IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_40MHZ;
3285                 break;
3286         default:
3287                 he_6ghz_op->control =
3288                         IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_20MHZ;
3289                 break;
3290         }
3291
3292         pos += sizeof(struct ieee80211_he_6ghz_oper);
3293
3294 out:
3295         return pos;
3296 }
3297
3298 bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper,
3299                                struct cfg80211_chan_def *chandef)
3300 {
3301         enum nl80211_channel_type channel_type;
3302
3303         if (!ht_oper)
3304                 return false;
3305
3306         switch (ht_oper->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) {
3307         case IEEE80211_HT_PARAM_CHA_SEC_NONE:
3308                 channel_type = NL80211_CHAN_HT20;
3309                 break;
3310         case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
3311                 channel_type = NL80211_CHAN_HT40PLUS;
3312                 break;
3313         case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
3314                 channel_type = NL80211_CHAN_HT40MINUS;
3315                 break;
3316         default:
3317                 return false;
3318         }
3319
3320         cfg80211_chandef_create(chandef, chandef->chan, channel_type);
3321         return true;
3322 }
3323
3324 bool ieee80211_chandef_vht_oper(struct ieee80211_hw *hw, u32 vht_cap_info,
3325                                 const struct ieee80211_vht_operation *oper,
3326                                 const struct ieee80211_ht_operation *htop,
3327                                 struct cfg80211_chan_def *chandef)
3328 {
3329         struct cfg80211_chan_def new = *chandef;
3330         int cf0, cf1;
3331         int ccfs0, ccfs1, ccfs2;
3332         int ccf0, ccf1;
3333         u32 vht_cap;
3334         bool support_80_80 = false;
3335         bool support_160 = false;
3336         u8 ext_nss_bw_supp = u32_get_bits(vht_cap_info,
3337                                           IEEE80211_VHT_CAP_EXT_NSS_BW_MASK);
3338         u8 supp_chwidth = u32_get_bits(vht_cap_info,
3339                                        IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK);
3340
3341         if (!oper || !htop)
3342                 return false;
3343
3344         vht_cap = hw->wiphy->bands[chandef->chan->band]->vht_cap.cap;
3345         support_160 = (vht_cap & (IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK |
3346                                   IEEE80211_VHT_CAP_EXT_NSS_BW_MASK));
3347         support_80_80 = ((vht_cap &
3348                          IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ) ||
3349                         (vht_cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ &&
3350                          vht_cap & IEEE80211_VHT_CAP_EXT_NSS_BW_MASK) ||
3351                         ((vht_cap & IEEE80211_VHT_CAP_EXT_NSS_BW_MASK) >>
3352                                     IEEE80211_VHT_CAP_EXT_NSS_BW_SHIFT > 1));
3353         ccfs0 = oper->center_freq_seg0_idx;
3354         ccfs1 = oper->center_freq_seg1_idx;
3355         ccfs2 = (le16_to_cpu(htop->operation_mode) &
3356                                 IEEE80211_HT_OP_MODE_CCFS2_MASK)
3357                         >> IEEE80211_HT_OP_MODE_CCFS2_SHIFT;
3358
3359         ccf0 = ccfs0;
3360
3361         /* if not supported, parse as though we didn't understand it */
3362         if (!ieee80211_hw_check(hw, SUPPORTS_VHT_EXT_NSS_BW))
3363                 ext_nss_bw_supp = 0;
3364
3365         /*
3366          * Cf. IEEE 802.11 Table 9-250
3367          *
3368          * We really just consider that because it's inefficient to connect
3369          * at a higher bandwidth than we'll actually be able to use.
3370          */
3371         switch ((supp_chwidth << 4) | ext_nss_bw_supp) {
3372         default:
3373         case 0x00:
3374                 ccf1 = 0;
3375                 support_160 = false;
3376                 support_80_80 = false;
3377                 break;
3378         case 0x01:
3379                 support_80_80 = false;
3380                 fallthrough;
3381         case 0x02:
3382         case 0x03:
3383                 ccf1 = ccfs2;
3384                 break;
3385         case 0x10:
3386                 ccf1 = ccfs1;
3387                 break;
3388         case 0x11:
3389         case 0x12:
3390                 if (!ccfs1)
3391                         ccf1 = ccfs2;
3392                 else
3393                         ccf1 = ccfs1;
3394                 break;
3395         case 0x13:
3396         case 0x20:
3397         case 0x23:
3398                 ccf1 = ccfs1;
3399                 break;
3400         }
3401
3402         cf0 = ieee80211_channel_to_frequency(ccf0, chandef->chan->band);
3403         cf1 = ieee80211_channel_to_frequency(ccf1, chandef->chan->band);
3404
3405         switch (oper->chan_width) {
3406         case IEEE80211_VHT_CHANWIDTH_USE_HT:
3407                 /* just use HT information directly */
3408                 break;
3409         case IEEE80211_VHT_CHANWIDTH_80MHZ:
3410                 new.width = NL80211_CHAN_WIDTH_80;
3411                 new.center_freq1 = cf0;
3412                 /* If needed, adjust based on the newer interop workaround. */
3413                 if (ccf1) {
3414                         unsigned int diff;
3415
3416                         diff = abs(ccf1 - ccf0);
3417                         if ((diff == 8) && support_160) {
3418                                 new.width = NL80211_CHAN_WIDTH_160;
3419                                 new.center_freq1 = cf1;
3420                         } else if ((diff > 8) && support_80_80) {
3421                                 new.width = NL80211_CHAN_WIDTH_80P80;
3422                                 new.center_freq2 = cf1;
3423                         }
3424                 }
3425                 break;
3426         case IEEE80211_VHT_CHANWIDTH_160MHZ:
3427                 /* deprecated encoding */
3428                 new.width = NL80211_CHAN_WIDTH_160;
3429                 new.center_freq1 = cf0;
3430                 break;
3431         case IEEE80211_VHT_CHANWIDTH_80P80MHZ:
3432                 /* deprecated encoding */
3433                 new.width = NL80211_CHAN_WIDTH_80P80;
3434                 new.center_freq1 = cf0;
3435                 new.center_freq2 = cf1;
3436                 break;
3437         default:
3438                 return false;
3439         }
3440
3441         if (!cfg80211_chandef_valid(&new))
3442                 return false;
3443
3444         *chandef = new;
3445         return true;
3446 }
3447
3448 bool ieee80211_chandef_he_6ghz_oper(struct ieee80211_sub_if_data *sdata,
3449                                     const struct ieee80211_he_operation *he_oper,
3450                                     const struct ieee80211_eht_operation *eht_oper,
3451                                     struct cfg80211_chan_def *chandef)
3452 {
3453         struct ieee80211_local *local = sdata->local;
3454         struct ieee80211_supported_band *sband;
3455         enum nl80211_iftype iftype = ieee80211_vif_type_p2p(&sdata->vif);
3456         const struct ieee80211_sta_he_cap *he_cap;
3457         const struct ieee80211_sta_eht_cap *eht_cap;
3458         struct cfg80211_chan_def he_chandef = *chandef;
3459         const struct ieee80211_he_6ghz_oper *he_6ghz_oper;
3460         struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
3461         bool support_80_80, support_160, support_320;
3462         u8 he_phy_cap, eht_phy_cap;
3463         u32 freq;
3464
3465         if (chandef->chan->band != NL80211_BAND_6GHZ)
3466                 return true;
3467
3468         sband = local->hw.wiphy->bands[NL80211_BAND_6GHZ];
3469
3470         he_cap = ieee80211_get_he_iftype_cap(sband, iftype);
3471         if (!he_cap) {
3472                 sdata_info(sdata, "Missing iftype sband data/HE cap");
3473                 return false;
3474         }
3475
3476         he_phy_cap = he_cap->he_cap_elem.phy_cap_info[0];
3477         support_160 =
3478                 he_phy_cap &
3479                 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G;
3480         support_80_80 =
3481                 he_phy_cap &
3482                 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G;
3483
3484         if (!he_oper) {
3485                 sdata_info(sdata,
3486                            "HE is not advertised on (on %d MHz), expect issues\n",
3487                            chandef->chan->center_freq);
3488                 return false;
3489         }
3490
3491         eht_cap = ieee80211_get_eht_iftype_cap(sband, iftype);
3492         if (!eht_cap) {
3493                 sdata_info(sdata, "Missing iftype sband data/EHT cap");
3494                 eht_oper = NULL;
3495         }
3496
3497         he_6ghz_oper = ieee80211_he_6ghz_oper(he_oper);
3498
3499         if (!he_6ghz_oper) {
3500                 sdata_info(sdata,
3501                            "HE 6GHz operation missing (on %d MHz), expect issues\n",
3502                            chandef->chan->center_freq);
3503                 return false;
3504         }
3505
3506         /*
3507          * The EHT operation IE does not contain the primary channel so the
3508          * primary channel frequency should be taken from the 6 GHz operation
3509          * information.
3510          */
3511         freq = ieee80211_channel_to_frequency(he_6ghz_oper->primary,
3512                                               NL80211_BAND_6GHZ);
3513         he_chandef.chan = ieee80211_get_channel(sdata->local->hw.wiphy, freq);
3514
3515         switch (u8_get_bits(he_6ghz_oper->control,
3516                             IEEE80211_HE_6GHZ_OPER_CTRL_REG_INFO)) {
3517         case IEEE80211_6GHZ_CTRL_REG_LPI_AP:
3518                 bss_conf->power_type = IEEE80211_REG_LPI_AP;
3519                 break;
3520         case IEEE80211_6GHZ_CTRL_REG_SP_AP:
3521                 bss_conf->power_type = IEEE80211_REG_SP_AP;
3522                 break;
3523         default:
3524                 bss_conf->power_type = IEEE80211_REG_UNSET_AP;
3525                 break;
3526         }
3527
3528         if (!eht_oper) {
3529                 switch (u8_get_bits(he_6ghz_oper->control,
3530                                     IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH)) {
3531                 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_20MHZ:
3532                         he_chandef.width = NL80211_CHAN_WIDTH_20;
3533                         break;
3534                 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_40MHZ:
3535                         he_chandef.width = NL80211_CHAN_WIDTH_40;
3536                         break;
3537                 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_80MHZ:
3538                         he_chandef.width = NL80211_CHAN_WIDTH_80;
3539                         break;
3540                 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_160MHZ:
3541                         he_chandef.width = NL80211_CHAN_WIDTH_80;
3542                         if (!he_6ghz_oper->ccfs1)
3543                                 break;
3544                         if (abs(he_6ghz_oper->ccfs1 - he_6ghz_oper->ccfs0) == 8) {
3545                                 if (support_160)
3546                                         he_chandef.width = NL80211_CHAN_WIDTH_160;
3547                         } else {
3548                                 if (support_80_80)
3549                                         he_chandef.width = NL80211_CHAN_WIDTH_80P80;
3550                         }
3551                         break;
3552                 }
3553
3554                 if (he_chandef.width == NL80211_CHAN_WIDTH_160) {
3555                         he_chandef.center_freq1 =
3556                                 ieee80211_channel_to_frequency(he_6ghz_oper->ccfs1,
3557                                                                NL80211_BAND_6GHZ);
3558                 } else {
3559                         he_chandef.center_freq1 =
3560                                 ieee80211_channel_to_frequency(he_6ghz_oper->ccfs0,
3561                                                                NL80211_BAND_6GHZ);
3562                         if (support_80_80 || support_160)
3563                                 he_chandef.center_freq2 =
3564                                         ieee80211_channel_to_frequency(he_6ghz_oper->ccfs1,
3565                                                                        NL80211_BAND_6GHZ);
3566                 }
3567         } else {
3568                 eht_phy_cap = eht_cap->eht_cap_elem.phy_cap_info[0];
3569                 support_320 =
3570                         eht_phy_cap & IEEE80211_EHT_PHY_CAP0_320MHZ_IN_6GHZ;
3571
3572                 switch (u8_get_bits(eht_oper->chan_width,
3573                                     IEEE80211_EHT_OPER_CHAN_WIDTH)) {
3574                 case IEEE80211_EHT_OPER_CHAN_WIDTH_20MHZ:
3575                         he_chandef.width = NL80211_CHAN_WIDTH_20;
3576                         break;
3577                 case IEEE80211_EHT_OPER_CHAN_WIDTH_40MHZ:
3578                         he_chandef.width = NL80211_CHAN_WIDTH_40;
3579                         break;
3580                 case IEEE80211_EHT_OPER_CHAN_WIDTH_80MHZ:
3581                         he_chandef.width = NL80211_CHAN_WIDTH_80;
3582                         break;
3583                 case IEEE80211_EHT_OPER_CHAN_WIDTH_160MHZ:
3584                         if (support_160)
3585                                 he_chandef.width = NL80211_CHAN_WIDTH_160;
3586                         else
3587                                 he_chandef.width = NL80211_CHAN_WIDTH_80;
3588                         break;
3589                 case IEEE80211_EHT_OPER_CHAN_WIDTH_320MHZ:
3590                         if (support_320)
3591                                 he_chandef.width = NL80211_CHAN_WIDTH_320;
3592                         else if (support_160)
3593                                 he_chandef.width = NL80211_CHAN_WIDTH_160;
3594                         else
3595                                 he_chandef.width = NL80211_CHAN_WIDTH_80;
3596                         break;
3597                 }
3598
3599                 he_chandef.center_freq1 =
3600                         ieee80211_channel_to_frequency(eht_oper->ccfs,
3601                                                        NL80211_BAND_6GHZ);
3602         }
3603
3604         if (!cfg80211_chandef_valid(&he_chandef)) {
3605                 sdata_info(sdata,
3606                            "HE 6GHz operation resulted in invalid chandef: %d MHz/%d/%d MHz/%d MHz\n",
3607                            he_chandef.chan ? he_chandef.chan->center_freq : 0,
3608                            he_chandef.width,
3609                            he_chandef.center_freq1,
3610                            he_chandef.center_freq2);
3611                 return false;
3612         }
3613
3614         *chandef = he_chandef;
3615
3616         return true;
3617 }
3618
3619 bool ieee80211_chandef_s1g_oper(const struct ieee80211_s1g_oper_ie *oper,
3620                                 struct cfg80211_chan_def *chandef)
3621 {
3622         u32 oper_freq;
3623
3624         if (!oper)
3625                 return false;
3626
3627         switch (FIELD_GET(S1G_OPER_CH_WIDTH_OPER, oper->ch_width)) {
3628         case IEEE80211_S1G_CHANWIDTH_1MHZ:
3629                 chandef->width = NL80211_CHAN_WIDTH_1;
3630                 break;
3631         case IEEE80211_S1G_CHANWIDTH_2MHZ:
3632                 chandef->width = NL80211_CHAN_WIDTH_2;
3633                 break;
3634         case IEEE80211_S1G_CHANWIDTH_4MHZ:
3635                 chandef->width = NL80211_CHAN_WIDTH_4;
3636                 break;
3637         case IEEE80211_S1G_CHANWIDTH_8MHZ:
3638                 chandef->width = NL80211_CHAN_WIDTH_8;
3639                 break;
3640         case IEEE80211_S1G_CHANWIDTH_16MHZ:
3641                 chandef->width = NL80211_CHAN_WIDTH_16;
3642                 break;
3643         default:
3644                 return false;
3645         }
3646
3647         oper_freq = ieee80211_channel_to_freq_khz(oper->oper_ch,
3648                                                   NL80211_BAND_S1GHZ);
3649         chandef->center_freq1 = KHZ_TO_MHZ(oper_freq);
3650         chandef->freq1_offset = oper_freq % 1000;
3651
3652         return true;
3653 }
3654
3655 int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef,
3656                              const struct ieee80211_supported_band *sband,
3657                              const u8 *srates, int srates_len, u32 *rates)
3658 {
3659         u32 rate_flags = ieee80211_chandef_rate_flags(chandef);
3660         int shift = ieee80211_chandef_get_shift(chandef);
3661         struct ieee80211_rate *br;
3662         int brate, rate, i, j, count = 0;
3663
3664         *rates = 0;
3665
3666         for (i = 0; i < srates_len; i++) {
3667                 rate = srates[i] & 0x7f;
3668
3669                 for (j = 0; j < sband->n_bitrates; j++) {
3670                         br = &sband->bitrates[j];
3671                         if ((rate_flags & br->flags) != rate_flags)
3672                                 continue;
3673
3674                         brate = DIV_ROUND_UP(br->bitrate, (1 << shift) * 5);
3675                         if (brate == rate) {
3676                                 *rates |= BIT(j);
3677                                 count++;
3678                                 break;
3679                         }
3680                 }
3681         }
3682         return count;
3683 }
3684
3685 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
3686                             struct sk_buff *skb, bool need_basic,
3687                             enum nl80211_band band)
3688 {
3689         struct ieee80211_local *local = sdata->local;
3690         struct ieee80211_supported_band *sband;
3691         int rate, shift;
3692         u8 i, rates, *pos;
3693         u32 basic_rates = sdata->vif.bss_conf.basic_rates;
3694         u32 rate_flags;
3695
3696         shift = ieee80211_vif_get_shift(&sdata->vif);
3697         rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef);
3698         sband = local->hw.wiphy->bands[band];
3699         rates = 0;
3700         for (i = 0; i < sband->n_bitrates; i++) {
3701                 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
3702                         continue;
3703                 rates++;
3704         }
3705         if (rates > 8)
3706                 rates = 8;
3707
3708         if (skb_tailroom(skb) < rates + 2)
3709                 return -ENOMEM;
3710
3711         pos = skb_put(skb, rates + 2);
3712         *pos++ = WLAN_EID_SUPP_RATES;
3713         *pos++ = rates;
3714         for (i = 0; i < rates; i++) {
3715                 u8 basic = 0;
3716                 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
3717                         continue;
3718
3719                 if (need_basic && basic_rates & BIT(i))
3720                         basic = 0x80;
3721                 rate = DIV_ROUND_UP(sband->bitrates[i].bitrate,
3722                                     5 * (1 << shift));
3723                 *pos++ = basic | (u8) rate;
3724         }
3725
3726         return 0;
3727 }
3728
3729 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
3730                                 struct sk_buff *skb, bool need_basic,
3731                                 enum nl80211_band band)
3732 {
3733         struct ieee80211_local *local = sdata->local;
3734         struct ieee80211_supported_band *sband;
3735         int rate, shift;
3736         u8 i, exrates, *pos;
3737         u32 basic_rates = sdata->vif.bss_conf.basic_rates;
3738         u32 rate_flags;
3739
3740         rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef);
3741         shift = ieee80211_vif_get_shift(&sdata->vif);
3742
3743         sband = local->hw.wiphy->bands[band];
3744         exrates = 0;
3745         for (i = 0; i < sband->n_bitrates; i++) {
3746                 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
3747                         continue;
3748                 exrates++;
3749         }
3750
3751         if (exrates > 8)
3752                 exrates -= 8;
3753         else
3754                 exrates = 0;
3755
3756         if (skb_tailroom(skb) < exrates + 2)
3757                 return -ENOMEM;
3758
3759         if (exrates) {
3760                 pos = skb_put(skb, exrates + 2);
3761                 *pos++ = WLAN_EID_EXT_SUPP_RATES;
3762                 *pos++ = exrates;
3763                 for (i = 8; i < sband->n_bitrates; i++) {
3764                         u8 basic = 0;
3765                         if ((rate_flags & sband->bitrates[i].flags)
3766                             != rate_flags)
3767                                 continue;
3768                         if (need_basic && basic_rates & BIT(i))
3769                                 basic = 0x80;
3770                         rate = DIV_ROUND_UP(sband->bitrates[i].bitrate,
3771                                             5 * (1 << shift));
3772                         *pos++ = basic | (u8) rate;
3773                 }
3774         }
3775         return 0;
3776 }
3777
3778 int ieee80211_ave_rssi(struct ieee80211_vif *vif)
3779 {
3780         struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
3781         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3782
3783         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION)) {
3784                 /* non-managed type inferfaces */
3785                 return 0;
3786         }
3787         return -ewma_beacon_signal_read(&ifmgd->ave_beacon_signal);
3788 }
3789 EXPORT_SYMBOL_GPL(ieee80211_ave_rssi);
3790
3791 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs)
3792 {
3793         if (!mcs)
3794                 return 1;
3795
3796         /* TODO: consider rx_highest */
3797
3798         if (mcs->rx_mask[3])
3799                 return 4;
3800         if (mcs->rx_mask[2])
3801                 return 3;
3802         if (mcs->rx_mask[1])
3803                 return 2;
3804         return 1;
3805 }
3806
3807 /**
3808  * ieee80211_calculate_rx_timestamp - calculate timestamp in frame
3809  * @local: mac80211 hw info struct
3810  * @status: RX status
3811  * @mpdu_len: total MPDU length (including FCS)
3812  * @mpdu_offset: offset into MPDU to calculate timestamp at
3813  *
3814  * This function calculates the RX timestamp at the given MPDU offset, taking
3815  * into account what the RX timestamp was. An offset of 0 will just normalize
3816  * the timestamp to TSF at beginning of MPDU reception.
3817  */
3818 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
3819                                      struct ieee80211_rx_status *status,
3820                                      unsigned int mpdu_len,
3821                                      unsigned int mpdu_offset)
3822 {
3823         u64 ts = status->mactime;
3824         struct rate_info ri;
3825         u16 rate;
3826         u8 n_ltf;
3827
3828         if (WARN_ON(!ieee80211_have_rx_timestamp(status)))
3829                 return 0;
3830
3831         memset(&ri, 0, sizeof(ri));
3832
3833         ri.bw = status->bw;
3834
3835         /* Fill cfg80211 rate info */
3836         switch (status->encoding) {
3837         case RX_ENC_HE:
3838                 ri.flags |= RATE_INFO_FLAGS_HE_MCS;
3839                 ri.mcs = status->rate_idx;
3840                 ri.nss = status->nss;
3841                 ri.he_ru_alloc = status->he_ru;
3842                 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI)
3843                         ri.flags |= RATE_INFO_FLAGS_SHORT_GI;
3844
3845                 /*
3846                  * See P802.11ax_D6.0, section 27.3.4 for
3847                  * VHT PPDU format.
3848                  */
3849                 if (status->flag & RX_FLAG_MACTIME_PLCP_START) {
3850                         mpdu_offset += 2;
3851                         ts += 36;
3852
3853                         /*
3854                          * TODO:
3855                          * For HE MU PPDU, add the HE-SIG-B.
3856                          * For HE ER PPDU, add 8us for the HE-SIG-A.
3857                          * For HE TB PPDU, add 4us for the HE-STF.
3858                          * Add the HE-LTF durations - variable.
3859                          */
3860                 }
3861
3862                 break;
3863         case RX_ENC_HT:
3864                 ri.mcs = status->rate_idx;
3865                 ri.flags |= RATE_INFO_FLAGS_MCS;
3866                 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI)
3867                         ri.flags |= RATE_INFO_FLAGS_SHORT_GI;
3868
3869                 /*
3870                  * See P802.11REVmd_D3.0, section 19.3.2 for
3871                  * HT PPDU format.
3872                  */
3873                 if (status->flag & RX_FLAG_MACTIME_PLCP_START) {
3874                         mpdu_offset += 2;
3875                         if (status->enc_flags & RX_ENC_FLAG_HT_GF)
3876                                 ts += 24;
3877                         else
3878                                 ts += 32;
3879
3880                         /*
3881                          * Add Data HT-LTFs per streams
3882                          * TODO: add Extension HT-LTFs, 4us per LTF
3883                          */
3884                         n_ltf = ((ri.mcs >> 3) & 3) + 1;
3885                         n_ltf = n_ltf == 3 ? 4 : n_ltf;
3886                         ts += n_ltf * 4;
3887                 }
3888
3889                 break;
3890         case RX_ENC_VHT:
3891                 ri.flags |= RATE_INFO_FLAGS_VHT_MCS;
3892                 ri.mcs = status->rate_idx;
3893                 ri.nss = status->nss;
3894                 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI)
3895                         ri.flags |= RATE_INFO_FLAGS_SHORT_GI;
3896
3897                 /*
3898                  * See P802.11REVmd_D3.0, section 21.3.2 for
3899                  * VHT PPDU format.
3900                  */
3901                 if (status->flag & RX_FLAG_MACTIME_PLCP_START) {
3902                         mpdu_offset += 2;
3903                         ts += 36;
3904
3905                         /*
3906                          * Add VHT-LTFs per streams
3907                          */
3908                         n_ltf = (ri.nss != 1) && (ri.nss % 2) ?
3909                                 ri.nss + 1 : ri.nss;
3910                         ts += 4 * n_ltf;
3911                 }
3912
3913                 break;
3914         default:
3915                 WARN_ON(1);
3916                 fallthrough;
3917         case RX_ENC_LEGACY: {
3918                 struct ieee80211_supported_band *sband;
3919                 int shift = 0;
3920                 int bitrate;
3921
3922                 switch (status->bw) {
3923                 case RATE_INFO_BW_10:
3924                         shift = 1;
3925                         break;
3926                 case RATE_INFO_BW_5:
3927                         shift = 2;
3928                         break;
3929                 }
3930
3931                 sband = local->hw.wiphy->bands[status->band];
3932                 bitrate = sband->bitrates[status->rate_idx].bitrate;
3933                 ri.legacy = DIV_ROUND_UP(bitrate, (1 << shift));
3934
3935                 if (status->flag & RX_FLAG_MACTIME_PLCP_START) {
3936                         if (status->band == NL80211_BAND_5GHZ) {
3937                                 ts += 20 << shift;
3938                                 mpdu_offset += 2;
3939                         } else if (status->enc_flags & RX_ENC_FLAG_SHORTPRE) {
3940                                 ts += 96;
3941                         } else {
3942                                 ts += 192;
3943                         }
3944                 }
3945                 break;
3946                 }
3947         }
3948
3949         rate = cfg80211_calculate_bitrate(&ri);
3950         if (WARN_ONCE(!rate,
3951                       "Invalid bitrate: flags=0x%llx, idx=%d, vht_nss=%d\n",
3952                       (unsigned long long)status->flag, status->rate_idx,
3953                       status->nss))
3954                 return 0;
3955
3956         /* rewind from end of MPDU */
3957         if (status->flag & RX_FLAG_MACTIME_END)
3958                 ts -= mpdu_len * 8 * 10 / rate;
3959
3960         ts += mpdu_offset * 8 * 10 / rate;
3961
3962         return ts;
3963 }
3964
3965 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local)
3966 {
3967         struct ieee80211_sub_if_data *sdata;
3968         struct cfg80211_chan_def chandef;
3969
3970         /* for interface list, to avoid linking iflist_mtx and chanctx_mtx */
3971         lockdep_assert_wiphy(local->hw.wiphy);
3972
3973         mutex_lock(&local->mtx);
3974         list_for_each_entry(sdata, &local->interfaces, list) {
3975                 /* it might be waiting for the local->mtx, but then
3976                  * by the time it gets it, sdata->wdev.cac_started
3977                  * will no longer be true
3978                  */
3979                 cancel_delayed_work(&sdata->dfs_cac_timer_work);
3980
3981                 if (sdata->wdev.cac_started) {
3982                         chandef = sdata->vif.bss_conf.chandef;
3983                         ieee80211_vif_release_channel(sdata);
3984                         cfg80211_cac_event(sdata->dev,
3985                                            &chandef,
3986                                            NL80211_RADAR_CAC_ABORTED,
3987                                            GFP_KERNEL);
3988                 }
3989         }
3990         mutex_unlock(&local->mtx);
3991 }
3992
3993 void ieee80211_dfs_radar_detected_work(struct work_struct *work)
3994 {
3995         struct ieee80211_local *local =
3996                 container_of(work, struct ieee80211_local, radar_detected_work);
3997         struct cfg80211_chan_def chandef = local->hw.conf.chandef;
3998         struct ieee80211_chanctx *ctx;
3999         int num_chanctx = 0;
4000
4001         mutex_lock(&local->chanctx_mtx);
4002         list_for_each_entry(ctx, &local->chanctx_list, list) {
4003                 if (ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER)
4004                         continue;
4005
4006                 num_chanctx++;
4007                 chandef = ctx->conf.def;
4008         }
4009         mutex_unlock(&local->chanctx_mtx);
4010
4011         wiphy_lock(local->hw.wiphy);
4012         ieee80211_dfs_cac_cancel(local);
4013         wiphy_unlock(local->hw.wiphy);
4014
4015         if (num_chanctx > 1)
4016                 /* XXX: multi-channel is not supported yet */
4017                 WARN_ON(1);
4018         else
4019                 cfg80211_radar_event(local->hw.wiphy, &chandef, GFP_KERNEL);
4020 }
4021
4022 void ieee80211_radar_detected(struct ieee80211_hw *hw)
4023 {
4024         struct ieee80211_local *local = hw_to_local(hw);
4025
4026         trace_api_radar_detected(local);
4027
4028         schedule_work(&local->radar_detected_work);
4029 }
4030 EXPORT_SYMBOL(ieee80211_radar_detected);
4031
4032 u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c)
4033 {
4034         u32 ret;
4035         int tmp;
4036
4037         switch (c->width) {
4038         case NL80211_CHAN_WIDTH_20:
4039                 c->width = NL80211_CHAN_WIDTH_20_NOHT;
4040                 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
4041                 break;
4042         case NL80211_CHAN_WIDTH_40:
4043                 c->width = NL80211_CHAN_WIDTH_20;
4044                 c->center_freq1 = c->chan->center_freq;
4045                 ret = IEEE80211_STA_DISABLE_40MHZ |
4046                       IEEE80211_STA_DISABLE_VHT;
4047                 break;
4048         case NL80211_CHAN_WIDTH_80:
4049                 tmp = (30 + c->chan->center_freq - c->center_freq1)/20;
4050                 /* n_P40 */
4051                 tmp /= 2;
4052                 /* freq_P40 */
4053                 c->center_freq1 = c->center_freq1 - 20 + 40 * tmp;
4054                 c->width = NL80211_CHAN_WIDTH_40;
4055                 ret = IEEE80211_STA_DISABLE_VHT;
4056                 break;
4057         case NL80211_CHAN_WIDTH_80P80:
4058                 c->center_freq2 = 0;
4059                 c->width = NL80211_CHAN_WIDTH_80;
4060                 ret = IEEE80211_STA_DISABLE_80P80MHZ |
4061                       IEEE80211_STA_DISABLE_160MHZ;
4062                 break;
4063         case NL80211_CHAN_WIDTH_160:
4064                 /* n_P20 */
4065                 tmp = (70 + c->chan->center_freq - c->center_freq1)/20;
4066                 /* n_P80 */
4067                 tmp /= 4;
4068                 c->center_freq1 = c->center_freq1 - 40 + 80 * tmp;
4069                 c->width = NL80211_CHAN_WIDTH_80;
4070                 ret = IEEE80211_STA_DISABLE_80P80MHZ |
4071                       IEEE80211_STA_DISABLE_160MHZ;
4072                 break;
4073         case NL80211_CHAN_WIDTH_320:
4074                 /* n_P20 */
4075                 tmp = (150 + c->chan->center_freq - c->center_freq1) / 20;
4076                 /* n_P160 */
4077                 tmp /= 80;
4078                 c->center_freq1 = c->center_freq1 - 80 + 160 * tmp;
4079                 c->width = NL80211_CHAN_WIDTH_160;
4080                 ret = IEEE80211_STA_DISABLE_320MHZ;
4081                 break;
4082         default:
4083         case NL80211_CHAN_WIDTH_20_NOHT:
4084                 WARN_ON_ONCE(1);
4085                 c->width = NL80211_CHAN_WIDTH_20_NOHT;
4086                 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
4087                 break;
4088         case NL80211_CHAN_WIDTH_1:
4089         case NL80211_CHAN_WIDTH_2:
4090         case NL80211_CHAN_WIDTH_4:
4091         case NL80211_CHAN_WIDTH_8:
4092         case NL80211_CHAN_WIDTH_16:
4093         case NL80211_CHAN_WIDTH_5:
4094         case NL80211_CHAN_WIDTH_10:
4095                 WARN_ON_ONCE(1);
4096                 /* keep c->width */
4097                 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
4098                 break;
4099         }
4100
4101         WARN_ON_ONCE(!cfg80211_chandef_valid(c));
4102
4103         return ret;
4104 }
4105
4106 /*
4107  * Returns true if smps_mode_new is strictly more restrictive than
4108  * smps_mode_old.
4109  */
4110 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old,
4111                                    enum ieee80211_smps_mode smps_mode_new)
4112 {
4113         if (WARN_ON_ONCE(smps_mode_old == IEEE80211_SMPS_AUTOMATIC ||
4114                          smps_mode_new == IEEE80211_SMPS_AUTOMATIC))
4115                 return false;
4116
4117         switch (smps_mode_old) {
4118         case IEEE80211_SMPS_STATIC:
4119                 return false;
4120         case IEEE80211_SMPS_DYNAMIC:
4121                 return smps_mode_new == IEEE80211_SMPS_STATIC;
4122         case IEEE80211_SMPS_OFF:
4123                 return smps_mode_new != IEEE80211_SMPS_OFF;
4124         default:
4125                 WARN_ON(1);
4126         }
4127
4128         return false;
4129 }
4130
4131 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata,
4132                               struct cfg80211_csa_settings *csa_settings)
4133 {
4134         struct sk_buff *skb;
4135         struct ieee80211_mgmt *mgmt;
4136         struct ieee80211_local *local = sdata->local;
4137         int freq;
4138         int hdr_len = offsetofend(struct ieee80211_mgmt,
4139                                   u.action.u.chan_switch);
4140         u8 *pos;
4141
4142         if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
4143             sdata->vif.type != NL80211_IFTYPE_MESH_POINT)
4144                 return -EOPNOTSUPP;
4145
4146         skb = dev_alloc_skb(local->tx_headroom + hdr_len +
4147                             5 + /* channel switch announcement element */
4148                             3 + /* secondary channel offset element */
4149                             5 + /* wide bandwidth channel switch announcement */
4150                             8); /* mesh channel switch parameters element */
4151         if (!skb)
4152                 return -ENOMEM;
4153
4154         skb_reserve(skb, local->tx_headroom);
4155         mgmt = skb_put_zero(skb, hdr_len);
4156         mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
4157                                           IEEE80211_STYPE_ACTION);
4158
4159         eth_broadcast_addr(mgmt->da);
4160         memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
4161         if (ieee80211_vif_is_mesh(&sdata->vif)) {
4162                 memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN);
4163         } else {
4164                 struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
4165                 memcpy(mgmt->bssid, ifibss->bssid, ETH_ALEN);
4166         }
4167         mgmt->u.action.category = WLAN_CATEGORY_SPECTRUM_MGMT;
4168         mgmt->u.action.u.chan_switch.action_code = WLAN_ACTION_SPCT_CHL_SWITCH;
4169         pos = skb_put(skb, 5);
4170         *pos++ = WLAN_EID_CHANNEL_SWITCH;                       /* EID */
4171         *pos++ = 3;                                             /* IE length */
4172         *pos++ = csa_settings->block_tx ? 1 : 0;                /* CSA mode */
4173         freq = csa_settings->chandef.chan->center_freq;
4174         *pos++ = ieee80211_frequency_to_channel(freq);          /* channel */
4175         *pos++ = csa_settings->count;                           /* count */
4176
4177         if (csa_settings->chandef.width == NL80211_CHAN_WIDTH_40) {
4178                 enum nl80211_channel_type ch_type;
4179
4180                 skb_put(skb, 3);
4181                 *pos++ = WLAN_EID_SECONDARY_CHANNEL_OFFSET;     /* EID */
4182                 *pos++ = 1;                                     /* IE length */
4183                 ch_type = cfg80211_get_chandef_type(&csa_settings->chandef);
4184                 if (ch_type == NL80211_CHAN_HT40PLUS)
4185                         *pos++ = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
4186                 else
4187                         *pos++ = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
4188         }
4189
4190         if (ieee80211_vif_is_mesh(&sdata->vif)) {
4191                 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
4192
4193                 skb_put(skb, 8);
4194                 *pos++ = WLAN_EID_CHAN_SWITCH_PARAM;            /* EID */
4195                 *pos++ = 6;                                     /* IE length */
4196                 *pos++ = sdata->u.mesh.mshcfg.dot11MeshTTL;     /* Mesh TTL */
4197                 *pos = 0x00;    /* Mesh Flag: Tx Restrict, Initiator, Reason */
4198                 *pos |= WLAN_EID_CHAN_SWITCH_PARAM_INITIATOR;
4199                 *pos++ |= csa_settings->block_tx ?
4200                           WLAN_EID_CHAN_SWITCH_PARAM_TX_RESTRICT : 0x00;
4201                 put_unaligned_le16(WLAN_REASON_MESH_CHAN, pos); /* Reason Cd */
4202                 pos += 2;
4203                 put_unaligned_le16(ifmsh->pre_value, pos);/* Precedence Value */
4204                 pos += 2;
4205         }
4206
4207         if (csa_settings->chandef.width == NL80211_CHAN_WIDTH_80 ||
4208             csa_settings->chandef.width == NL80211_CHAN_WIDTH_80P80 ||
4209             csa_settings->chandef.width == NL80211_CHAN_WIDTH_160) {
4210                 skb_put(skb, 5);
4211                 ieee80211_ie_build_wide_bw_cs(pos, &csa_settings->chandef);
4212         }
4213
4214         ieee80211_tx_skb(sdata, skb);
4215         return 0;
4216 }
4217
4218 bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs)
4219 {
4220         return !(cs == NULL || cs->cipher == 0 ||
4221                  cs->hdr_len < cs->pn_len + cs->pn_off ||
4222                  cs->hdr_len <= cs->key_idx_off ||
4223                  cs->key_idx_shift > 7 ||
4224                  cs->key_idx_mask == 0);
4225 }
4226
4227 bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n)
4228 {
4229         int i;
4230
4231         /* Ensure we have enough iftype bitmap space for all iftype values */
4232         WARN_ON((NUM_NL80211_IFTYPES / 8 + 1) > sizeof(cs[0].iftype));
4233
4234         for (i = 0; i < n; i++)
4235                 if (!ieee80211_cs_valid(&cs[i]))
4236                         return false;
4237
4238         return true;
4239 }
4240
4241 const struct ieee80211_cipher_scheme *
4242 ieee80211_cs_get(struct ieee80211_local *local, u32 cipher,
4243                  enum nl80211_iftype iftype)
4244 {
4245         const struct ieee80211_cipher_scheme *l = local->hw.cipher_schemes;
4246         int n = local->hw.n_cipher_schemes;
4247         int i;
4248         const struct ieee80211_cipher_scheme *cs = NULL;
4249
4250         for (i = 0; i < n; i++) {
4251                 if (l[i].cipher == cipher) {
4252                         cs = &l[i];
4253                         break;
4254                 }
4255         }
4256
4257         if (!cs || !(cs->iftype & BIT(iftype)))
4258                 return NULL;
4259
4260         return cs;
4261 }
4262
4263 int ieee80211_cs_headroom(struct ieee80211_local *local,
4264                           struct cfg80211_crypto_settings *crypto,
4265                           enum nl80211_iftype iftype)
4266 {
4267         const struct ieee80211_cipher_scheme *cs;
4268         int headroom = IEEE80211_ENCRYPT_HEADROOM;
4269         int i;
4270
4271         for (i = 0; i < crypto->n_ciphers_pairwise; i++) {
4272                 cs = ieee80211_cs_get(local, crypto->ciphers_pairwise[i],
4273                                       iftype);
4274
4275                 if (cs && headroom < cs->hdr_len)
4276                         headroom = cs->hdr_len;
4277         }
4278
4279         cs = ieee80211_cs_get(local, crypto->cipher_group, iftype);
4280         if (cs && headroom < cs->hdr_len)
4281                 headroom = cs->hdr_len;
4282
4283         return headroom;
4284 }
4285
4286 static bool
4287 ieee80211_extend_noa_desc(struct ieee80211_noa_data *data, u32 tsf, int i)
4288 {
4289         s32 end = data->desc[i].start + data->desc[i].duration - (tsf + 1);
4290         int skip;
4291
4292         if (end > 0)
4293                 return false;
4294
4295         /* One shot NOA  */
4296         if (data->count[i] == 1)
4297                 return false;
4298
4299         if (data->desc[i].interval == 0)
4300                 return false;
4301
4302         /* End time is in the past, check for repetitions */
4303         skip = DIV_ROUND_UP(-end, data->desc[i].interval);
4304         if (data->count[i] < 255) {
4305                 if (data->count[i] <= skip) {
4306                         data->count[i] = 0;
4307                         return false;
4308                 }
4309
4310                 data->count[i] -= skip;
4311         }
4312
4313         data->desc[i].start += skip * data->desc[i].interval;
4314
4315         return true;
4316 }
4317
4318 static bool
4319 ieee80211_extend_absent_time(struct ieee80211_noa_data *data, u32 tsf,
4320                              s32 *offset)
4321 {
4322         bool ret = false;
4323         int i;
4324
4325         for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) {
4326                 s32 cur;
4327
4328                 if (!data->count[i])
4329                         continue;
4330
4331                 if (ieee80211_extend_noa_desc(data, tsf + *offset, i))
4332                         ret = true;
4333
4334                 cur = data->desc[i].start - tsf;
4335                 if (cur > *offset)
4336                         continue;
4337
4338                 cur = data->desc[i].start + data->desc[i].duration - tsf;
4339                 if (cur > *offset)
4340                         *offset = cur;
4341         }
4342
4343         return ret;
4344 }
4345
4346 static u32
4347 ieee80211_get_noa_absent_time(struct ieee80211_noa_data *data, u32 tsf)
4348 {
4349         s32 offset = 0;
4350         int tries = 0;
4351         /*
4352          * arbitrary limit, used to avoid infinite loops when combined NoA
4353          * descriptors cover the full time period.
4354          */
4355         int max_tries = 5;
4356
4357         ieee80211_extend_absent_time(data, tsf, &offset);
4358         do {
4359                 if (!ieee80211_extend_absent_time(data, tsf, &offset))
4360                         break;
4361
4362                 tries++;
4363         } while (tries < max_tries);
4364
4365         return offset;
4366 }
4367
4368 void ieee80211_update_p2p_noa(struct ieee80211_noa_data *data, u32 tsf)
4369 {
4370         u32 next_offset = BIT(31) - 1;
4371         int i;
4372
4373         data->absent = 0;
4374         data->has_next_tsf = false;
4375         for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) {
4376                 s32 start;
4377
4378                 if (!data->count[i])
4379                         continue;
4380
4381                 ieee80211_extend_noa_desc(data, tsf, i);
4382                 start = data->desc[i].start - tsf;
4383                 if (start <= 0)
4384                         data->absent |= BIT(i);
4385
4386                 if (next_offset > start)
4387                         next_offset = start;
4388
4389                 data->has_next_tsf = true;
4390         }
4391
4392         if (data->absent)
4393                 next_offset = ieee80211_get_noa_absent_time(data, tsf);
4394
4395         data->next_tsf = tsf + next_offset;
4396 }
4397 EXPORT_SYMBOL(ieee80211_update_p2p_noa);
4398
4399 int ieee80211_parse_p2p_noa(const struct ieee80211_p2p_noa_attr *attr,
4400                             struct ieee80211_noa_data *data, u32 tsf)
4401 {
4402         int ret = 0;
4403         int i;
4404
4405         memset(data, 0, sizeof(*data));
4406
4407         for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) {
4408                 const struct ieee80211_p2p_noa_desc *desc = &attr->desc[i];
4409
4410                 if (!desc->count || !desc->duration)
4411                         continue;
4412
4413                 data->count[i] = desc->count;
4414                 data->desc[i].start = le32_to_cpu(desc->start_time);
4415                 data->desc[i].duration = le32_to_cpu(desc->duration);
4416                 data->desc[i].interval = le32_to_cpu(desc->interval);
4417
4418                 if (data->count[i] > 1 &&
4419                     data->desc[i].interval < data->desc[i].duration)
4420                         continue;
4421
4422                 ieee80211_extend_noa_desc(data, tsf, i);
4423                 ret++;
4424         }
4425
4426         if (ret)
4427                 ieee80211_update_p2p_noa(data, tsf);
4428
4429         return ret;
4430 }
4431 EXPORT_SYMBOL(ieee80211_parse_p2p_noa);
4432
4433 void ieee80211_recalc_dtim(struct ieee80211_local *local,
4434                            struct ieee80211_sub_if_data *sdata)
4435 {
4436         u64 tsf = drv_get_tsf(local, sdata);
4437         u64 dtim_count = 0;
4438         u16 beacon_int = sdata->vif.bss_conf.beacon_int * 1024;
4439         u8 dtim_period = sdata->vif.bss_conf.dtim_period;
4440         struct ps_data *ps;
4441         u8 bcns_from_dtim;
4442
4443         if (tsf == -1ULL || !beacon_int || !dtim_period)
4444                 return;
4445
4446         if (sdata->vif.type == NL80211_IFTYPE_AP ||
4447             sdata->vif.type == NL80211_IFTYPE_AP_VLAN) {
4448                 if (!sdata->bss)
4449                         return;
4450
4451                 ps = &sdata->bss->ps;
4452         } else if (ieee80211_vif_is_mesh(&sdata->vif)) {
4453                 ps = &sdata->u.mesh.ps;
4454         } else {
4455                 return;
4456         }
4457
4458         /*
4459          * actually finds last dtim_count, mac80211 will update in
4460          * __beacon_add_tim().
4461          * dtim_count = dtim_period - (tsf / bcn_int) % dtim_period
4462          */
4463         do_div(tsf, beacon_int);
4464         bcns_from_dtim = do_div(tsf, dtim_period);
4465         /* just had a DTIM */
4466         if (!bcns_from_dtim)
4467                 dtim_count = 0;
4468         else
4469                 dtim_count = dtim_period - bcns_from_dtim;
4470
4471         ps->dtim_count = dtim_count;
4472 }
4473
4474 static u8 ieee80211_chanctx_radar_detect(struct ieee80211_local *local,
4475                                          struct ieee80211_chanctx *ctx)
4476 {
4477         struct ieee80211_sub_if_data *sdata;
4478         u8 radar_detect = 0;
4479
4480         lockdep_assert_held(&local->chanctx_mtx);
4481
4482         if (WARN_ON(ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED))
4483                 return 0;
4484
4485         list_for_each_entry(sdata, &ctx->reserved_vifs, reserved_chanctx_list)
4486                 if (sdata->reserved_radar_required)
4487                         radar_detect |= BIT(sdata->reserved_chandef.width);
4488
4489         /*
4490          * An in-place reservation context should not have any assigned vifs
4491          * until it replaces the other context.
4492          */
4493         WARN_ON(ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER &&
4494                 !list_empty(&ctx->assigned_vifs));
4495
4496         list_for_each_entry(sdata, &ctx->assigned_vifs, assigned_chanctx_list)
4497                 if (sdata->radar_required)
4498                         radar_detect |= BIT(sdata->vif.bss_conf.chandef.width);
4499
4500         return radar_detect;
4501 }
4502
4503 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata,
4504                                  const struct cfg80211_chan_def *chandef,
4505                                  enum ieee80211_chanctx_mode chanmode,
4506                                  u8 radar_detect)
4507 {
4508         struct ieee80211_local *local = sdata->local;
4509         struct ieee80211_sub_if_data *sdata_iter;
4510         enum nl80211_iftype iftype = sdata->wdev.iftype;
4511         struct ieee80211_chanctx *ctx;
4512         int total = 1;
4513         struct iface_combination_params params = {
4514                 .radar_detect = radar_detect,
4515         };
4516
4517         lockdep_assert_held(&local->chanctx_mtx);
4518
4519         if (WARN_ON(hweight32(radar_detect) > 1))
4520                 return -EINVAL;
4521
4522         if (WARN_ON(chandef && chanmode == IEEE80211_CHANCTX_SHARED &&
4523                     !chandef->chan))
4524                 return -EINVAL;
4525
4526         if (WARN_ON(iftype >= NUM_NL80211_IFTYPES))
4527                 return -EINVAL;
4528
4529         if (sdata->vif.type == NL80211_IFTYPE_AP ||
4530             sdata->vif.type == NL80211_IFTYPE_MESH_POINT) {
4531                 /*
4532                  * always passing this is harmless, since it'll be the
4533                  * same value that cfg80211 finds if it finds the same
4534                  * interface ... and that's always allowed
4535                  */
4536                 params.new_beacon_int = sdata->vif.bss_conf.beacon_int;
4537         }
4538
4539         /* Always allow software iftypes */
4540         if (cfg80211_iftype_allowed(local->hw.wiphy, iftype, 0, 1)) {
4541                 if (radar_detect)
4542                         return -EINVAL;
4543                 return 0;
4544         }
4545
4546         if (chandef)
4547                 params.num_different_channels = 1;
4548
4549         if (iftype != NL80211_IFTYPE_UNSPECIFIED)
4550                 params.iftype_num[iftype] = 1;
4551
4552         list_for_each_entry(ctx, &local->chanctx_list, list) {
4553                 if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED)
4554                         continue;
4555                 params.radar_detect |=
4556                         ieee80211_chanctx_radar_detect(local, ctx);
4557                 if (ctx->mode == IEEE80211_CHANCTX_EXCLUSIVE) {
4558                         params.num_different_channels++;
4559                         continue;
4560                 }
4561                 if (chandef && chanmode == IEEE80211_CHANCTX_SHARED &&
4562                     cfg80211_chandef_compatible(chandef,
4563                                                 &ctx->conf.def))
4564                         continue;
4565                 params.num_different_channels++;
4566         }
4567
4568         list_for_each_entry_rcu(sdata_iter, &local->interfaces, list) {
4569                 struct wireless_dev *wdev_iter;
4570
4571                 wdev_iter = &sdata_iter->wdev;
4572
4573                 if (sdata_iter == sdata ||
4574                     !ieee80211_sdata_running(sdata_iter) ||
4575                     cfg80211_iftype_allowed(local->hw.wiphy,
4576                                             wdev_iter->iftype, 0, 1))
4577                         continue;
4578
4579                 params.iftype_num[wdev_iter->iftype]++;
4580                 total++;
4581         }
4582
4583         if (total == 1 && !params.radar_detect)
4584                 return 0;
4585
4586         return cfg80211_check_combinations(local->hw.wiphy, &params);
4587 }
4588
4589 static void
4590 ieee80211_iter_max_chans(const struct ieee80211_iface_combination *c,
4591                          void *data)
4592 {
4593         u32 *max_num_different_channels = data;
4594
4595         *max_num_different_channels = max(*max_num_different_channels,
4596                                           c->num_different_channels);
4597 }
4598
4599 int ieee80211_max_num_channels(struct ieee80211_local *local)
4600 {
4601         struct ieee80211_sub_if_data *sdata;
4602         struct ieee80211_chanctx *ctx;
4603         u32 max_num_different_channels = 1;
4604         int err;
4605         struct iface_combination_params params = {0};
4606
4607         lockdep_assert_held(&local->chanctx_mtx);
4608
4609         list_for_each_entry(ctx, &local->chanctx_list, list) {
4610                 if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED)
4611                         continue;
4612
4613                 params.num_different_channels++;
4614
4615                 params.radar_detect |=
4616                         ieee80211_chanctx_radar_detect(local, ctx);
4617         }
4618
4619         list_for_each_entry_rcu(sdata, &local->interfaces, list)
4620                 params.iftype_num[sdata->wdev.iftype]++;
4621
4622         err = cfg80211_iter_combinations(local->hw.wiphy, &params,
4623                                          ieee80211_iter_max_chans,
4624                                          &max_num_different_channels);
4625         if (err < 0)
4626                 return err;
4627
4628         return max_num_different_channels;
4629 }
4630
4631 void ieee80211_add_s1g_capab_ie(struct ieee80211_sub_if_data *sdata,
4632                                 struct ieee80211_sta_s1g_cap *caps,
4633                                 struct sk_buff *skb)
4634 {
4635         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4636         struct ieee80211_s1g_cap s1g_capab;
4637         u8 *pos;
4638         int i;
4639
4640         if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
4641                 return;
4642
4643         if (!caps->s1g)
4644                 return;
4645
4646         memcpy(s1g_capab.capab_info, caps->cap, sizeof(caps->cap));
4647         memcpy(s1g_capab.supp_mcs_nss, caps->nss_mcs, sizeof(caps->nss_mcs));
4648
4649         /* override the capability info */
4650         for (i = 0; i < sizeof(ifmgd->s1g_capa.capab_info); i++) {
4651                 u8 mask = ifmgd->s1g_capa_mask.capab_info[i];
4652
4653                 s1g_capab.capab_info[i] &= ~mask;
4654                 s1g_capab.capab_info[i] |= ifmgd->s1g_capa.capab_info[i] & mask;
4655         }
4656
4657         /* then MCS and NSS set */
4658         for (i = 0; i < sizeof(ifmgd->s1g_capa.supp_mcs_nss); i++) {
4659                 u8 mask = ifmgd->s1g_capa_mask.supp_mcs_nss[i];
4660
4661                 s1g_capab.supp_mcs_nss[i] &= ~mask;
4662                 s1g_capab.supp_mcs_nss[i] |=
4663                         ifmgd->s1g_capa.supp_mcs_nss[i] & mask;
4664         }
4665
4666         pos = skb_put(skb, 2 + sizeof(s1g_capab));
4667         *pos++ = WLAN_EID_S1G_CAPABILITIES;
4668         *pos++ = sizeof(s1g_capab);
4669
4670         memcpy(pos, &s1g_capab, sizeof(s1g_capab));
4671 }
4672
4673 void ieee80211_add_aid_request_ie(struct ieee80211_sub_if_data *sdata,
4674                                   struct sk_buff *skb)
4675 {
4676         u8 *pos = skb_put(skb, 3);
4677
4678         *pos++ = WLAN_EID_AID_REQUEST;
4679         *pos++ = 1;
4680         *pos++ = 0;
4681 }
4682
4683 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo)
4684 {
4685         *buf++ = WLAN_EID_VENDOR_SPECIFIC;
4686         *buf++ = 7; /* len */
4687         *buf++ = 0x00; /* Microsoft OUI 00:50:F2 */
4688         *buf++ = 0x50;
4689         *buf++ = 0xf2;
4690         *buf++ = 2; /* WME */
4691         *buf++ = 0; /* WME info */
4692         *buf++ = 1; /* WME ver */
4693         *buf++ = qosinfo; /* U-APSD no in use */
4694
4695         return buf;
4696 }
4697
4698 void ieee80211_txq_get_depth(struct ieee80211_txq *txq,
4699                              unsigned long *frame_cnt,
4700                              unsigned long *byte_cnt)
4701 {
4702         struct txq_info *txqi = to_txq_info(txq);
4703         u32 frag_cnt = 0, frag_bytes = 0;
4704         struct sk_buff *skb;
4705
4706         skb_queue_walk(&txqi->frags, skb) {
4707                 frag_cnt++;
4708                 frag_bytes += skb->len;
4709         }
4710
4711         if (frame_cnt)
4712                 *frame_cnt = txqi->tin.backlog_packets + frag_cnt;
4713
4714         if (byte_cnt)
4715                 *byte_cnt = txqi->tin.backlog_bytes + frag_bytes;
4716 }
4717 EXPORT_SYMBOL(ieee80211_txq_get_depth);
4718
4719 const u8 ieee80211_ac_to_qos_mask[IEEE80211_NUM_ACS] = {
4720         IEEE80211_WMM_IE_STA_QOSINFO_AC_VO,
4721         IEEE80211_WMM_IE_STA_QOSINFO_AC_VI,
4722         IEEE80211_WMM_IE_STA_QOSINFO_AC_BE,
4723         IEEE80211_WMM_IE_STA_QOSINFO_AC_BK
4724 };
4725
4726 u16 ieee80211_encode_usf(int listen_interval)
4727 {
4728         static const int listen_int_usf[] = { 1, 10, 1000, 10000 };
4729         u16 ui, usf = 0;
4730
4731         /* find greatest USF */
4732         while (usf < IEEE80211_MAX_USF) {
4733                 if (listen_interval % listen_int_usf[usf + 1])
4734                         break;
4735                 usf += 1;
4736         }
4737         ui = listen_interval / listen_int_usf[usf];
4738
4739         /* error if there is a remainder. Should've been checked by user */
4740         WARN_ON_ONCE(ui > IEEE80211_MAX_UI);
4741         listen_interval = FIELD_PREP(LISTEN_INT_USF, usf) |
4742                           FIELD_PREP(LISTEN_INT_UI, ui);
4743
4744         return (u16) listen_interval;
4745 }
4746
4747 u8 ieee80211_ie_len_eht_cap(struct ieee80211_sub_if_data *sdata, u8 iftype)
4748 {
4749         const struct ieee80211_sta_he_cap *he_cap;
4750         const struct ieee80211_sta_eht_cap *eht_cap;
4751         struct ieee80211_supported_band *sband;
4752         u8 n;
4753
4754         sband = ieee80211_get_sband(sdata);
4755         if (!sband)
4756                 return 0;
4757
4758         he_cap = ieee80211_get_he_iftype_cap(sband, iftype);
4759         eht_cap = ieee80211_get_eht_iftype_cap(sband, iftype);
4760         if (!he_cap || !eht_cap)
4761                 return 0;
4762
4763         n = ieee80211_eht_mcs_nss_size(&he_cap->he_cap_elem,
4764                                        &eht_cap->eht_cap_elem);
4765         return 2 + 1 +
4766                sizeof(he_cap->he_cap_elem) + n +
4767                ieee80211_eht_ppe_size(eht_cap->eht_ppe_thres[0],
4768                                       eht_cap->eht_cap_elem.phy_cap_info);
4769         return 0;
4770 }
4771
4772 u8 *ieee80211_ie_build_eht_cap(u8 *pos,
4773                                const struct ieee80211_sta_he_cap *he_cap,
4774                                const struct ieee80211_sta_eht_cap *eht_cap,
4775                                u8 *end)
4776 {
4777         u8 mcs_nss_len, ppet_len;
4778         u8 ie_len;
4779         u8 *orig_pos = pos;
4780
4781         /* Make sure we have place for the IE */
4782         if (!he_cap || !eht_cap)
4783                 return orig_pos;
4784
4785         mcs_nss_len = ieee80211_eht_mcs_nss_size(&he_cap->he_cap_elem,
4786                                                  &eht_cap->eht_cap_elem);
4787         ppet_len = ieee80211_eht_ppe_size(eht_cap->eht_ppe_thres[0],
4788                                           eht_cap->eht_cap_elem.phy_cap_info);
4789
4790         ie_len = 2 + 1 + sizeof(eht_cap->eht_cap_elem) + mcs_nss_len + ppet_len;
4791         if ((end - pos) < ie_len)
4792                 return orig_pos;
4793
4794         *pos++ = WLAN_EID_EXTENSION;
4795         *pos++ = ie_len - 2;
4796         *pos++ = WLAN_EID_EXT_EHT_CAPABILITY;
4797
4798         /* Fixed data */
4799         memcpy(pos, &eht_cap->eht_cap_elem, sizeof(eht_cap->eht_cap_elem));
4800         pos += sizeof(eht_cap->eht_cap_elem);
4801
4802         memcpy(pos, &eht_cap->eht_mcs_nss_supp, mcs_nss_len);
4803         pos += mcs_nss_len;
4804
4805         if (ppet_len) {
4806                 memcpy(pos, &eht_cap->eht_ppe_thres, ppet_len);
4807                 pos += ppet_len;
4808         }
4809
4810         return pos;
4811 }