mac80211/util.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Copyright 2002-2005, Instant802 Networks, Inc.
   4  * Copyright 2005-2006, Devicescape Software, Inc.
   5  * Copyright 2006-2007  Jiri Benc <jbenc@suse.cz>
   6  * Copyright 2007       Johannes Berg <johannes@sipsolutions.net>
   7  * Copyright 2013-2014  Intel Mobile Communications GmbH
   8  * Copyright (C) 2015-2017      Intel Deutschland GmbH
   9  * Copyright (C) 2018-2022 Intel Corporation
  10  *
  11  * utilities for mac80211
  12  */
  13
  14 #include <net/mac80211.h>
  15 #include <linux/netdevice.h>
  16 #include <linux/export.h>
  17 #include <linux/types.h>
  18 #include <linux/slab.h>
  19 #include <linux/skbuff.h>
  20 #include <linux/etherdevice.h>
  21 #include <linux/if_arp.h>
  22 #include <linux/bitmap.h>
  23 #include <linux/crc32.h>
  24 #include <net/net_namespace.h>
  25 #include <net/cfg80211.h>
  26 #include <net/rtnetlink.h>
  27
  28 #include "ieee80211_i.h"
  29 #include "driver-ops.h"
  30 #include "rate.h"
  31 #include "mesh.h"
  32 #include "wme.h"
  33 #include "led.h"
  34 #include "wep.h"
  35
  36 /* privid for wiphys to determine whether they belong to us or not */
  37 const void *const mac80211_wiphy_privid = &mac80211_wiphy_privid;
  38
  39 struct ieee80211_hw *wiphy_to_ieee80211_hw(struct wiphy *wiphy)
  40 {
  41         struct ieee80211_local *local;
  42
  43         local = wiphy_priv(wiphy);
  44         return &local->hw;
  45 }
  46 EXPORT_SYMBOL(wiphy_to_ieee80211_hw);
  47
  48 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
  49                         enum nl80211_iftype type)
  50 {
  51         __le16 fc = hdr->frame_control;
  52
  53         if (ieee80211_is_data(fc)) {
  54                 if (len < 24) /* drop incorrect hdr len (data) */
  55                         return NULL;
  56
  57                 if (ieee80211_has_a4(fc))
  58                         return NULL;
  59                 if (ieee80211_has_tods(fc))
  60                         return hdr->addr1;
  61                 if (ieee80211_has_fromds(fc))
  62                         return hdr->addr2;
  63
  64                 return hdr->addr3;
  65         }
  66
  67         if (ieee80211_is_s1g_beacon(fc)) {
  68                 struct ieee80211_ext *ext = (void *) hdr;
  69
  70                 return ext->u.s1g_beacon.sa;
  71         }
  72
  73         if (ieee80211_is_mgmt(fc)) {
  74                 if (len < 24) /* drop incorrect hdr len (mgmt) */
  75                         return NULL;
  76                 return hdr->addr3;
  77         }
  78
  79         if (ieee80211_is_ctl(fc)) {
  80                 if (ieee80211_is_pspoll(fc))
  81                         return hdr->addr1;
  82
  83                 if (ieee80211_is_back_req(fc)) {
  84                         switch (type) {
  85                         case NL80211_IFTYPE_STATION:
  86                                 return hdr->addr2;
  87                         case NL80211_IFTYPE_AP:
  88                         case NL80211_IFTYPE_AP_VLAN:
  89                                 return hdr->addr1;
  90                         default:
  91                                 break; /* fall through to the return */
  92                         }
  93                 }
  94         }
  95
  96         return NULL;
  97 }
  98 EXPORT_SYMBOL(ieee80211_get_bssid);
  99
 100 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx)
 101 {
 102         struct sk_buff *skb;
 103         struct ieee80211_hdr *hdr;
 104
 105         skb_queue_walk(&tx->skbs, skb) {
 106                 hdr = (struct ieee80211_hdr *) skb->data;
 107                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
 108         }
 109 }
 110
 111 int ieee80211_frame_duration(enum nl80211_band band, size_t len,
 112                              int rate, int erp, int short_preamble,
 113                              int shift)
 114 {
 115         int dur;
 116
 117         /* calculate duration (in microseconds, rounded up to next higher
 118          * integer if it includes a fractional microsecond) to send frame of
 119          * len bytes (does not include FCS) at the given rate. Duration will
 120          * also include SIFS.
 121          *
 122          * rate is in 100 kbps, so divident is multiplied by 10 in the
 123          * DIV_ROUND_UP() operations.
 124          *
 125          * shift may be 2 for 5 MHz channels or 1 for 10 MHz channels, and
 126          * is assumed to be 0 otherwise.
 127          */
 128
 129         if (band == NL80211_BAND_5GHZ || erp) {
 130                 /*
 131                  * OFDM:
 132                  *
 133                  * N_DBPS = DATARATE x 4
 134                  * N_SYM = Ceiling((16+8xLENGTH+6) / N_DBPS)
 135                  *      (16 = SIGNAL time, 6 = tail bits)
 136                  * TXTIME = T_PREAMBLE + T_SIGNAL + T_SYM x N_SYM + Signal Ext
 137                  *
 138                  * T_SYM = 4 usec
 139                  * 802.11a - 18.5.2: aSIFSTime = 16 usec
 140                  * 802.11g - 19.8.4: aSIFSTime = 10 usec +
 141                  *      signal ext = 6 usec
 142                  */
 143                 dur = 16; /* SIFS + signal ext */
 144                 dur += 16; /* IEEE 802.11-2012 18.3.2.4: T_PREAMBLE = 16 usec */
 145                 dur += 4; /* IEEE 802.11-2012 18.3.2.4: T_SIGNAL = 4 usec */
 146
 147                 /* IEEE 802.11-2012 18.3.2.4: all values above are:
 148                  *  * times 4 for 5 MHz
 149                  *  * times 2 for 10 MHz
 150                  */
 151                 dur *= 1 << shift;
 152
 153                 /* rates should already consider the channel bandwidth,
 154                  * don't apply divisor again.
 155                  */
 156                 dur += 4 * DIV_ROUND_UP((16 + 8 * (len + 4) + 6) * 10,
 157                                         4 * rate); /* T_SYM x N_SYM */
 158         } else {
 159                 /*
 160                  * 802.11b or 802.11g with 802.11b compatibility:
 161                  * 18.3.4: TXTIME = PreambleLength + PLCPHeaderTime +
 162                  * Ceiling(((LENGTH+PBCC)x8)/DATARATE). PBCC=0.
 163                  *
 164                  * 802.11 (DS): 15.3.3, 802.11b: 18.3.4
 165                  * aSIFSTime = 10 usec
 166                  * aPreambleLength = 144 usec or 72 usec with short preamble
 167                  * aPLCPHeaderLength = 48 usec or 24 usec with short preamble
 168                  */
 169                 dur = 10; /* aSIFSTime = 10 usec */
 170                 dur += short_preamble ? (72 + 24) : (144 + 48);
 171
 172                 dur += DIV_ROUND_UP(8 * (len + 4) * 10, rate);
 173         }
 174
 175         return dur;
 176 }
 177
 178 /* Exported duration function for driver use */
 179 __le16 ieee80211_generic_frame_duration(struct ieee80211_hw *hw,
 180                                         struct ieee80211_vif *vif,
 181                                         enum nl80211_band band,
 182                                         size_t frame_len,
 183                                         struct ieee80211_rate *rate)
 184 {
 185         struct ieee80211_sub_if_data *sdata;
 186         u16 dur;
 187         int erp, shift = 0;
 188         bool short_preamble = false;
 189
 190         erp = 0;
 191         if (vif) {
 192                 sdata = vif_to_sdata(vif);
 193                 short_preamble = sdata->vif.bss_conf.use_short_preamble;
 194                 if (sdata->deflink.operating_11g_mode)
 195                         erp = rate->flags & IEEE80211_RATE_ERP_G;
 196                 shift = ieee80211_vif_get_shift(vif);
 197         }
 198
 199         dur = ieee80211_frame_duration(band, frame_len, rate->bitrate, erp,
 200                                        short_preamble, shift);
 201
 202         return cpu_to_le16(dur);
 203 }
 204 EXPORT_SYMBOL(ieee80211_generic_frame_duration);
 205
 206 __le16 ieee80211_rts_duration(struct ieee80211_hw *hw,
 207                               struct ieee80211_vif *vif, size_t frame_len,
 208                               const struct ieee80211_tx_info *frame_txctl)
 209 {
 210         struct ieee80211_local *local = hw_to_local(hw);
 211         struct ieee80211_rate *rate;
 212         struct ieee80211_sub_if_data *sdata;
 213         bool short_preamble;
 214         int erp, shift = 0, bitrate;
 215         u16 dur;
 216         struct ieee80211_supported_band *sband;
 217
 218         sband = local->hw.wiphy->bands[frame_txctl->band];
 219
 220         short_preamble = false;
 221
 222         rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx];
 223
 224         erp = 0;
 225         if (vif) {
 226                 sdata = vif_to_sdata(vif);
 227                 short_preamble = sdata->vif.bss_conf.use_short_preamble;
 228                 if (sdata->deflink.operating_11g_mode)
 229                         erp = rate->flags & IEEE80211_RATE_ERP_G;
 230                 shift = ieee80211_vif_get_shift(vif);
 231         }
 232
 233         bitrate = DIV_ROUND_UP(rate->bitrate, 1 << shift);
 234
 235         /* CTS duration */
 236         dur = ieee80211_frame_duration(sband->band, 10, bitrate,
 237                                        erp, short_preamble, shift);
 238         /* Data frame duration */
 239         dur += ieee80211_frame_duration(sband->band, frame_len, bitrate,
 240                                         erp, short_preamble, shift);
 241         /* ACK duration */
 242         dur += ieee80211_frame_duration(sband->band, 10, bitrate,
 243                                         erp, short_preamble, shift);
 244
 245         return cpu_to_le16(dur);
 246 }
 247 EXPORT_SYMBOL(ieee80211_rts_duration);
 248
 249 __le16 ieee80211_ctstoself_duration(struct ieee80211_hw *hw,
 250                                     struct ieee80211_vif *vif,
 251                                     size_t frame_len,
 252                                     const struct ieee80211_tx_info *frame_txctl)
 253 {
 254         struct ieee80211_local *local = hw_to_local(hw);
 255         struct ieee80211_rate *rate;
 256         struct ieee80211_sub_if_data *sdata;
 257         bool short_preamble;
 258         int erp, shift = 0, bitrate;
 259         u16 dur;
 260         struct ieee80211_supported_band *sband;
 261
 262         sband = local->hw.wiphy->bands[frame_txctl->band];
 263
 264         short_preamble = false;
 265
 266         rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx];
 267         erp = 0;
 268         if (vif) {
 269                 sdata = vif_to_sdata(vif);
 270                 short_preamble = sdata->vif.bss_conf.use_short_preamble;
 271                 if (sdata->deflink.operating_11g_mode)
 272                         erp = rate->flags & IEEE80211_RATE_ERP_G;
 273                 shift = ieee80211_vif_get_shift(vif);
 274         }
 275
 276         bitrate = DIV_ROUND_UP(rate->bitrate, 1 << shift);
 277
 278         /* Data frame duration */
 279         dur = ieee80211_frame_duration(sband->band, frame_len, bitrate,
 280                                        erp, short_preamble, shift);
 281         if (!(frame_txctl->flags & IEEE80211_TX_CTL_NO_ACK)) {
 282                 /* ACK duration */
 283                 dur += ieee80211_frame_duration(sband->band, 10, bitrate,
 284                                                 erp, short_preamble, shift);
 285         }
 286
 287         return cpu_to_le16(dur);
 288 }
 289 EXPORT_SYMBOL(ieee80211_ctstoself_duration);
 290
 291 static void __ieee80211_wake_txqs(struct ieee80211_sub_if_data *sdata, int ac)
 292 {
 293         struct ieee80211_local *local = sdata->local;
 294         struct ieee80211_vif *vif = &sdata->vif;
 295         struct fq *fq = &local->fq;
 296         struct ps_data *ps = NULL;
 297         struct txq_info *txqi;
 298         struct sta_info *sta;
 299         int i;
 300
 301         local_bh_disable();
 302         spin_lock(&fq->lock);
 303
 304         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         list_for_each_entry_rcu(sta, &local->sta_list, list) {
 311                 if (sdata != sta->sdata)
 312                         continue;
 313
 314                 for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) {
 315                         struct ieee80211_txq *txq = sta->sta.txq[i];
 316
 317                         if (!txq)
 318                                 continue;
 319
 320                         txqi = to_txq_info(txq);
 321
 322                         if (ac != txq->ac)
 323                                 continue;
 324
 325                         if (!test_and_clear_bit(IEEE80211_TXQ_DIRTY,
 326                                                 &txqi->flags))
 327                                 continue;
 328
 329                         spin_unlock(&fq->lock);
 330                         drv_wake_tx_queue(local, txqi);
 331                         spin_lock(&fq->lock);
 332                 }
 333         }
 334
 335         if (!vif->txq)
 336                 goto out;
 337
 338         txqi = to_txq_info(vif->txq);
 339
 340         if (!test_and_clear_bit(IEEE80211_TXQ_DIRTY, &txqi->flags) ||
 341             (ps && atomic_read(&ps->num_sta_ps)) || ac != vif->txq->ac)
 342                 goto out;
 343
 344         spin_unlock(&fq->lock);
 345
 346         drv_wake_tx_queue(local, txqi);
 347         local_bh_enable();
 348         return;
 349 out:
 350         spin_unlock(&fq->lock);
 351         local_bh_enable();
 352 }
 353
 354 static void
 355 __releases(&local->queue_stop_reason_lock)
 356 __acquires(&local->queue_stop_reason_lock)
 357 _ieee80211_wake_txqs(struct ieee80211_local *local, unsigned long *flags)
 358 {
 359         struct ieee80211_sub_if_data *sdata;
 360         int n_acs = IEEE80211_NUM_ACS;
 361         int i;
 362
 363         rcu_read_lock();
 364
 365         if (local->hw.queues < IEEE80211_NUM_ACS)
 366                 n_acs = 1;
 367
 368         for (i = 0; i < local->hw.queues; i++) {
 369                 if (local->queue_stop_reasons[i])
 370                         continue;
 371
 372                 spin_unlock_irqrestore(&local->queue_stop_reason_lock, *flags);
 373                 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
 374                         int ac;
 375
 376                         for (ac = 0; ac < n_acs; ac++) {
 377                                 int ac_queue = sdata->vif.hw_queue[ac];
 378
 379                                 if (ac_queue == i ||
 380                                     sdata->vif.cab_queue == i)
 381                                         __ieee80211_wake_txqs(sdata, ac);
 382                         }
 383                 }
 384                 spin_lock_irqsave(&local->queue_stop_reason_lock, *flags);
 385         }
 386
 387         rcu_read_unlock();
 388 }
 389
 390 void ieee80211_wake_txqs(struct tasklet_struct *t)
 391 {
 392         struct ieee80211_local *local = from_tasklet(local, t,
 393                                                      wake_txqs_tasklet);
 394         unsigned long flags;
 395
 396         spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
 397         _ieee80211_wake_txqs(local, &flags);
 398         spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
 399 }
 400
 401 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue)
 402 {
 403         struct ieee80211_sub_if_data *sdata;
 404         int n_acs = IEEE80211_NUM_ACS;
 405
 406         if (local->ops->wake_tx_queue)
 407                 return;
 408
 409         if (local->hw.queues < IEEE80211_NUM_ACS)
 410                 n_acs = 1;
 411
 412         list_for_each_entry_rcu(sdata, &local->interfaces, list) {
 413                 int ac;
 414
 415                 if (!sdata->dev)
 416                         continue;
 417
 418                 if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE &&
 419                     local->queue_stop_reasons[sdata->vif.cab_queue] != 0)
 420                         continue;
 421
 422                 for (ac = 0; ac < n_acs; ac++) {
 423                         int ac_queue = sdata->vif.hw_queue[ac];
 424
 425                         if (ac_queue == queue ||
 426                             (sdata->vif.cab_queue == queue &&
 427                              local->queue_stop_reasons[ac_queue] == 0 &&
 428                              skb_queue_empty(&local->pending[ac_queue])))
 429                                 netif_wake_subqueue(sdata->dev, ac);
 430                 }
 431         }
 432 }
 433
 434 static void __ieee80211_wake_queue(struct ieee80211_hw *hw, int queue,
 435                                    enum queue_stop_reason reason,
 436                                    bool refcounted,
 437                                    unsigned long *flags)
 438 {
 439         struct ieee80211_local *local = hw_to_local(hw);
 440
 441         trace_wake_queue(local, queue, reason);
 442
 443         if (WARN_ON(queue >= hw->queues))
 444                 return;
 445
 446         if (!test_bit(reason, &local->queue_stop_reasons[queue]))
 447                 return;
 448
 449         if (!refcounted) {
 450                 local->q_stop_reasons[queue][reason] = 0;
 451         } else {
 452                 local->q_stop_reasons[queue][reason]--;
 453                 if (WARN_ON(local->q_stop_reasons[queue][reason] < 0))
 454                         local->q_stop_reasons[queue][reason] = 0;
 455         }
 456
 457         if (local->q_stop_reasons[queue][reason] == 0)
 458                 __clear_bit(reason, &local->queue_stop_reasons[queue]);
 459
 460         if (local->queue_stop_reasons[queue] != 0)
 461                 /* someone still has this queue stopped */
 462                 return;
 463
 464         if (skb_queue_empty(&local->pending[queue])) {
 465                 rcu_read_lock();
 466                 ieee80211_propagate_queue_wake(local, queue);
 467                 rcu_read_unlock();
 468         } else
 469                 tasklet_schedule(&local->tx_pending_tasklet);
 470
 471         /*
 472          * Calling _ieee80211_wake_txqs here can be a problem because it may
 473          * release queue_stop_reason_lock which has been taken by
 474          * __ieee80211_wake_queue's caller. It is certainly not very nice to
 475          * release someone's lock, but it is fine because all the callers of
 476          * __ieee80211_wake_queue call it right before releasing the lock.
 477          */
 478         if (local->ops->wake_tx_queue) {
 479                 if (reason == IEEE80211_QUEUE_STOP_REASON_DRIVER)
 480                         tasklet_schedule(&local->wake_txqs_tasklet);
 481                 else
 482                         _ieee80211_wake_txqs(local, flags);
 483         }
 484 }
 485
 486 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
 487                                     enum queue_stop_reason reason,
 488                                     bool refcounted)
 489 {
 490         struct ieee80211_local *local = hw_to_local(hw);
 491         unsigned long flags;
 492
 493         spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
 494         __ieee80211_wake_queue(hw, queue, reason, refcounted, &flags);
 495         spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
 496 }
 497
 498 void ieee80211_wake_queue(struct ieee80211_hw *hw, int queue)
 499 {
 500         ieee80211_wake_queue_by_reason(hw, queue,
 501                                        IEEE80211_QUEUE_STOP_REASON_DRIVER,
 502                                        false);
 503 }
 504 EXPORT_SYMBOL(ieee80211_wake_queue);
 505
 506 static void __ieee80211_stop_queue(struct ieee80211_hw *hw, int queue,
 507                                    enum queue_stop_reason reason,
 508                                    bool refcounted)
 509 {
 510         struct ieee80211_local *local = hw_to_local(hw);
 511         struct ieee80211_sub_if_data *sdata;
 512         int n_acs = IEEE80211_NUM_ACS;
 513
 514         trace_stop_queue(local, queue, reason);
 515
 516         if (WARN_ON(queue >= hw->queues))
 517                 return;
 518
 519         if (!refcounted)
 520                 local->q_stop_reasons[queue][reason] = 1;
 521         else
 522                 local->q_stop_reasons[queue][reason]++;
 523
 524         if (__test_and_set_bit(reason, &local->queue_stop_reasons[queue]))
 525                 return;
 526
 527         if (local->hw.queues < IEEE80211_NUM_ACS)
 528                 n_acs = 1;
 529
 530         rcu_read_lock();
 531         list_for_each_entry_rcu(sdata, &local->interfaces, list) {
 532                 int ac;
 533
 534                 if (!sdata->dev)
 535                         continue;
 536
 537                 for (ac = 0; ac < n_acs; ac++) {
 538                         if (!local->ops->wake_tx_queue &&
 539                             (sdata->vif.hw_queue[ac] == queue ||
 540                              sdata->vif.cab_queue == queue))
 541                                 netif_stop_subqueue(sdata->dev, ac);
 542                 }
 543         }
 544         rcu_read_unlock();
 545 }
 546
 547 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
 548                                     enum queue_stop_reason reason,
 549                                     bool refcounted)
 550 {
 551         struct ieee80211_local *local = hw_to_local(hw);
 552         unsigned long flags;
 553
 554         spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
 555         __ieee80211_stop_queue(hw, queue, reason, refcounted);
 556         spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
 557 }
 558
 559 void ieee80211_stop_queue(struct ieee80211_hw *hw, int queue)
 560 {
 561         ieee80211_stop_queue_by_reason(hw, queue,
 562                                        IEEE80211_QUEUE_STOP_REASON_DRIVER,
 563                                        false);
 564 }
 565 EXPORT_SYMBOL(ieee80211_stop_queue);
 566
 567 void ieee80211_add_pending_skb(struct ieee80211_local *local,
 568                                struct sk_buff *skb)
 569 {
 570         struct ieee80211_hw *hw = &local->hw;
 571         unsigned long flags;
 572         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 573         int queue = info->hw_queue;
 574
 575         if (WARN_ON(!info->control.vif)) {
 576                 ieee80211_free_txskb(&local->hw, skb);
 577                 return;
 578         }
 579
 580         spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
 581         __ieee80211_stop_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
 582                                false);
 583         __skb_queue_tail(&local->pending[queue], skb);
 584         __ieee80211_wake_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
 585                                false, &flags);
 586         spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
 587 }
 588
 589 void ieee80211_add_pending_skbs(struct ieee80211_local *local,
 590                                 struct sk_buff_head *skbs)
 591 {
 592         struct ieee80211_hw *hw = &local->hw;
 593         struct sk_buff *skb;
 594         unsigned long flags;
 595         int queue, i;
 596
 597         spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
 598         while ((skb = skb_dequeue(skbs))) {
 599                 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 600
 601                 if (WARN_ON(!info->control.vif)) {
 602                         ieee80211_free_txskb(&local->hw, skb);
 603                         continue;
 604                 }
 605
 606                 queue = info->hw_queue;
 607
 608                 __ieee80211_stop_queue(hw, queue,
 609                                 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
 610                                 false);
 611
 612                 __skb_queue_tail(&local->pending[queue], skb);
 613         }
 614
 615         for (i = 0; i < hw->queues; i++)
 616                 __ieee80211_wake_queue(hw, i,
 617                         IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
 618                         false, &flags);
 619         spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
 620 }
 621
 622 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
 623                                      unsigned long queues,
 624                                      enum queue_stop_reason reason,
 625                                      bool refcounted)
 626 {
 627         struct ieee80211_local *local = hw_to_local(hw);
 628         unsigned long flags;
 629         int i;
 630
 631         spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
 632
 633         for_each_set_bit(i, &queues, hw->queues)
 634                 __ieee80211_stop_queue(hw, i, reason, refcounted);
 635
 636         spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
 637 }
 638
 639 void ieee80211_stop_queues(struct ieee80211_hw *hw)
 640 {
 641         ieee80211_stop_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
 642                                         IEEE80211_QUEUE_STOP_REASON_DRIVER,
 643                                         false);
 644 }
 645 EXPORT_SYMBOL(ieee80211_stop_queues);
 646
 647 int ieee80211_queue_stopped(struct ieee80211_hw *hw, int queue)
 648 {
 649         struct ieee80211_local *local = hw_to_local(hw);
 650         unsigned long flags;
 651         int ret;
 652
 653         if (WARN_ON(queue >= hw->queues))
 654                 return true;
 655
 656         spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
 657         ret = test_bit(IEEE80211_QUEUE_STOP_REASON_DRIVER,
 658                        &local->queue_stop_reasons[queue]);
 659         spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
 660         return ret;
 661 }
 662 EXPORT_SYMBOL(ieee80211_queue_stopped);
 663
 664 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
 665                                      unsigned long queues,
 666                                      enum queue_stop_reason reason,
 667                                      bool refcounted)
 668 {
 669         struct ieee80211_local *local = hw_to_local(hw);
 670         unsigned long flags;
 671         int i;
 672
 673         spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
 674
 675         for_each_set_bit(i, &queues, hw->queues)
 676                 __ieee80211_wake_queue(hw, i, reason, refcounted, &flags);
 677
 678         spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
 679 }
 680
 681 void ieee80211_wake_queues(struct ieee80211_hw *hw)
 682 {
 683         ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
 684                                         IEEE80211_QUEUE_STOP_REASON_DRIVER,
 685                                         false);
 686 }
 687 EXPORT_SYMBOL(ieee80211_wake_queues);
 688
 689 static unsigned int
 690 ieee80211_get_vif_queues(struct ieee80211_local *local,
 691                          struct ieee80211_sub_if_data *sdata)
 692 {
 693         unsigned int queues;
 694
 695         if (sdata && ieee80211_hw_check(&local->hw, QUEUE_CONTROL)) {
 696                 int ac;
 697
 698                 queues = 0;
 699
 700                 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
 701                         queues |= BIT(sdata->vif.hw_queue[ac]);
 702                 if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE)
 703                         queues |= BIT(sdata->vif.cab_queue);
 704         } else {
 705                 /* all queues */
 706                 queues = BIT(local->hw.queues) - 1;
 707         }
 708
 709         return queues;
 710 }
 711
 712 void __ieee80211_flush_queues(struct ieee80211_local *local,
 713                               struct ieee80211_sub_if_data *sdata,
 714                               unsigned int queues, bool drop)
 715 {
 716         if (!local->ops->flush)
 717                 return;
 718
 719         /*
 720          * If no queue was set, or if the HW doesn't support
 721          * IEEE80211_HW_QUEUE_CONTROL - flush all queues
 722          */
 723         if (!queues || !ieee80211_hw_check(&local->hw, QUEUE_CONTROL))
 724                 queues = ieee80211_get_vif_queues(local, sdata);
 725
 726         ieee80211_stop_queues_by_reason(&local->hw, queues,
 727                                         IEEE80211_QUEUE_STOP_REASON_FLUSH,
 728                                         false);
 729
 730         drv_flush(local, sdata, queues, drop);
 731
 732         ieee80211_wake_queues_by_reason(&local->hw, queues,
 733                                         IEEE80211_QUEUE_STOP_REASON_FLUSH,
 734                                         false);
 735 }
 736
 737 void ieee80211_flush_queues(struct ieee80211_local *local,
 738                             struct ieee80211_sub_if_data *sdata, bool drop)
 739 {
 740         __ieee80211_flush_queues(local, sdata, 0, drop);
 741 }
 742
 743 void ieee80211_stop_vif_queues(struct ieee80211_local *local,
 744                                struct ieee80211_sub_if_data *sdata,
 745                                enum queue_stop_reason reason)
 746 {
 747         ieee80211_stop_queues_by_reason(&local->hw,
 748                                         ieee80211_get_vif_queues(local, sdata),
 749                                         reason, true);
 750 }
 751
 752 void ieee80211_wake_vif_queues(struct ieee80211_local *local,
 753                                struct ieee80211_sub_if_data *sdata,
 754                                enum queue_stop_reason reason)
 755 {
 756         ieee80211_wake_queues_by_reason(&local->hw,
 757                                         ieee80211_get_vif_queues(local, sdata),
 758                                         reason, true);
 759 }
 760
 761 static void __iterate_interfaces(struct ieee80211_local *local,
 762                                  u32 iter_flags,
 763                                  void (*iterator)(void *data, u8 *mac,
 764                                                   struct ieee80211_vif *vif),
 765                                  void *data)
 766 {
 767         struct ieee80211_sub_if_data *sdata;
 768         bool active_only = iter_flags & IEEE80211_IFACE_ITER_ACTIVE;
 769
 770         list_for_each_entry_rcu(sdata, &local->interfaces, list) {
 771                 switch (sdata->vif.type) {
 772                 case NL80211_IFTYPE_MONITOR:
 773                         if (!(sdata->u.mntr.flags & MONITOR_FLAG_ACTIVE))
 774                                 continue;
 775                         break;
 776                 case NL80211_IFTYPE_AP_VLAN:
 777                         continue;
 778                 default:
 779                         break;
 780                 }
 781                 if (!(iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL) &&
 782                     active_only && !(sdata->flags & IEEE80211_SDATA_IN_DRIVER))
 783                         continue;
 784                 if ((iter_flags & IEEE80211_IFACE_SKIP_SDATA_NOT_IN_DRIVER) &&
 785                     !(sdata->flags & IEEE80211_SDATA_IN_DRIVER))
 786                         continue;
 787                 if (ieee80211_sdata_running(sdata) || !active_only)
 788                         iterator(data, sdata->vif.addr,
 789                                  &sdata->vif);
 790         }
 791
 792         sdata = rcu_dereference_check(local->monitor_sdata,
 793                                       lockdep_is_held(&local->iflist_mtx) ||
 794                                       lockdep_is_held(&local->hw.wiphy->mtx));
 795         if (sdata &&
 796             (iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL || !active_only ||
 797              sdata->flags & IEEE80211_SDATA_IN_DRIVER))
 798                 iterator(data, sdata->vif.addr, &sdata->vif);
 799 }
 800
 801 void ieee80211_iterate_interfaces(
 802         struct ieee80211_hw *hw, u32 iter_flags,
 803         void (*iterator)(void *data, u8 *mac,
 804                          struct ieee80211_vif *vif),
 805         void *data)
 806 {
 807         struct ieee80211_local *local = hw_to_local(hw);
 808
 809         mutex_lock(&local->iflist_mtx);
 810         __iterate_interfaces(local, iter_flags, iterator, data);
 811         mutex_unlock(&local->iflist_mtx);
 812 }
 813 EXPORT_SYMBOL_GPL(ieee80211_iterate_interfaces);
 814
 815 void ieee80211_iterate_active_interfaces_atomic(
 816         struct ieee80211_hw *hw, u32 iter_flags,
 817         void (*iterator)(void *data, u8 *mac,
 818                          struct ieee80211_vif *vif),
 819         void *data)
 820 {
 821         struct ieee80211_local *local = hw_to_local(hw);
 822
 823         rcu_read_lock();
 824         __iterate_interfaces(local, iter_flags | IEEE80211_IFACE_ITER_ACTIVE,
 825                              iterator, data);
 826         rcu_read_unlock();
 827 }
 828 EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_atomic);
 829
 830 void ieee80211_iterate_active_interfaces_mtx(
 831         struct ieee80211_hw *hw, u32 iter_flags,
 832         void (*iterator)(void *data, u8 *mac,
 833                          struct ieee80211_vif *vif),
 834         void *data)
 835 {
 836         struct ieee80211_local *local = hw_to_local(hw);
 837
 838         lockdep_assert_wiphy(hw->wiphy);
 839
 840         __iterate_interfaces(local, iter_flags | IEEE80211_IFACE_ITER_ACTIVE,
 841                              iterator, data);
 842 }
 843 EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_mtx);
 844
 845 static void __iterate_stations(struct ieee80211_local *local,
 846                                void (*iterator)(void *data,
 847                                                 struct ieee80211_sta *sta),
 848                                void *data)
 849 {
 850         struct sta_info *sta;
 851
 852         list_for_each_entry_rcu(sta, &local->sta_list, list) {
 853                 if (!sta->uploaded)
 854                         continue;
 855
 856                 iterator(data, &sta->sta);
 857         }
 858 }
 859
 860 void ieee80211_iterate_stations(struct ieee80211_hw *hw,
 861                                 void (*iterator)(void *data,
 862                                                  struct ieee80211_sta *sta),
 863                                 void *data)
 864 {
 865         struct ieee80211_local *local = hw_to_local(hw);
 866
 867         mutex_lock(&local->sta_mtx);
 868         __iterate_stations(local, iterator, data);
 869         mutex_unlock(&local->sta_mtx);
 870 }
 871 EXPORT_SYMBOL_GPL(ieee80211_iterate_stations);
 872
 873 void ieee80211_iterate_stations_atomic(struct ieee80211_hw *hw,
 874                         void (*iterator)(void *data,
 875                                          struct ieee80211_sta *sta),
 876                         void *data)
 877 {
 878         struct ieee80211_local *local = hw_to_local(hw);
 879
 880         rcu_read_lock();
 881         __iterate_stations(local, iterator, data);
 882         rcu_read_unlock();
 883 }
 884 EXPORT_SYMBOL_GPL(ieee80211_iterate_stations_atomic);
 885
 886 struct ieee80211_vif *wdev_to_ieee80211_vif(struct wireless_dev *wdev)
 887 {
 888         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 889
 890         if (!ieee80211_sdata_running(sdata) ||
 891             !(sdata->flags & IEEE80211_SDATA_IN_DRIVER))
 892                 return NULL;
 893         return &sdata->vif;
 894 }
 895 EXPORT_SYMBOL_GPL(wdev_to_ieee80211_vif);
 896
 897 struct wireless_dev *ieee80211_vif_to_wdev(struct ieee80211_vif *vif)
 898 {
 899         if (!vif)
 900                 return NULL;
 901
 902         return &vif_to_sdata(vif)->wdev;
 903 }
 904 EXPORT_SYMBOL_GPL(ieee80211_vif_to_wdev);
 905
 906 /*
 907  * Nothing should have been stuffed into the workqueue during
 908  * the suspend->resume cycle. Since we can't check each caller
 909  * of this function if we are already quiescing / suspended,
 910  * check here and don't WARN since this can actually happen when
 911  * the rx path (for example) is racing against __ieee80211_suspend
 912  * and suspending / quiescing was set after the rx path checked
 913  * them.
 914  */
 915 static bool ieee80211_can_queue_work(struct ieee80211_local *local)
 916 {
 917         if (local->quiescing || (local->suspended && !local->resuming)) {
 918                 pr_warn("queueing ieee80211 work while going to suspend\n");
 919                 return false;
 920         }
 921
 922         return true;
 923 }
 924
 925 void ieee80211_queue_work(struct ieee80211_hw *hw, struct work_struct *work)
 926 {
 927         struct ieee80211_local *local = hw_to_local(hw);
 928
 929         if (!ieee80211_can_queue_work(local))
 930                 return;
 931
 932         queue_work(local->workqueue, work);
 933 }
 934 EXPORT_SYMBOL(ieee80211_queue_work);
 935
 936 void ieee80211_queue_delayed_work(struct ieee80211_hw *hw,
 937                                   struct delayed_work *dwork,
 938                                   unsigned long delay)
 939 {
 940         struct ieee80211_local *local = hw_to_local(hw);
 941
 942         if (!ieee80211_can_queue_work(local))
 943                 return;
 944
 945         queue_delayed_work(local->workqueue, dwork, delay);
 946 }
 947 EXPORT_SYMBOL(ieee80211_queue_delayed_work);
 948
 949 static void
 950 ieee80211_parse_extension_element(u32 *crc,
 951                                   const struct element *elem,
 952                                   struct ieee802_11_elems *elems,
 953                                   struct ieee80211_elems_parse_params *params)
 954 {
 955         const void *data = elem->data + 1;
 956         u8 len;
 957
 958         if (!elem->datalen)
 959                 return;
 960
 961         len = elem->datalen - 1;
 962
 963         switch (elem->data[0]) {
 964         case WLAN_EID_EXT_HE_MU_EDCA:
 965                 if (len >= sizeof(*elems->mu_edca_param_set)) {
 966                         elems->mu_edca_param_set = data;
 967                         if (crc)
 968                                 *crc = crc32_be(*crc, (void *)elem,
 969                                                 elem->datalen + 2);
 970                 }
 971                 break;
 972         case WLAN_EID_EXT_HE_CAPABILITY:
 973                 if (ieee80211_he_capa_size_ok(data, len)) {
 974                         elems->he_cap = data;
 975                         elems->he_cap_len = len;
 976                 }
 977                 break;
 978         case WLAN_EID_EXT_HE_OPERATION:
 979                 if (len >= sizeof(*elems->he_operation) &&
 980                     len >= ieee80211_he_oper_size(data) - 1) {
 981                         if (crc)
 982                                 *crc = crc32_be(*crc, (void *)elem,
 983                                                 elem->datalen + 2);
 984                         elems->he_operation = data;
 985                 }
 986                 break;
 987         case WLAN_EID_EXT_UORA:
 988                 if (len >= 1)
 989                         elems->uora_element = data;
 990                 break;
 991         case WLAN_EID_EXT_MAX_CHANNEL_SWITCH_TIME:
 992                 if (len == 3)
 993                         elems->max_channel_switch_time = data;
 994                 break;
 995         case WLAN_EID_EXT_MULTIPLE_BSSID_CONFIGURATION:
 996                 if (len >= sizeof(*elems->mbssid_config_ie))
 997                         elems->mbssid_config_ie = data;
 998                 break;
 999         case WLAN_EID_EXT_HE_SPR:
1000                 if (len >= sizeof(*elems->he_spr) &&
1001                     len >= ieee80211_he_spr_size(data))
1002                         elems->he_spr = data;
1003                 break;
1004         case WLAN_EID_EXT_HE_6GHZ_CAPA:
1005                 if (len >= sizeof(*elems->he_6ghz_capa))
1006                         elems->he_6ghz_capa = data;
1007                 break;
1008         case WLAN_EID_EXT_EHT_CAPABILITY:
1009                 if (ieee80211_eht_capa_size_ok(elems->he_cap,
1010                                                data, len,
1011                                                params->from_ap)) {
1012                         elems->eht_cap = data;
1013                         elems->eht_cap_len = len;
1014                 }
1015                 break;
1016         case WLAN_EID_EXT_EHT_OPERATION:
1017                 if (ieee80211_eht_oper_size_ok(data, len))
1018                         elems->eht_operation = data;
1019                 break;
1020         case WLAN_EID_EXT_EHT_MULTI_LINK:
1021                 if (ieee80211_mle_size_ok(data, len))
1022                         elems->multi_link = (void *)data;
1023                 break;
1024         }
1025 }
1026
1027 static u32
1028 _ieee802_11_parse_elems_full(struct ieee80211_elems_parse_params *params,
1029                              struct ieee802_11_elems *elems,
1030                              const struct element *check_inherit)
1031 {
1032         const struct element *elem;
1033         bool calc_crc = params->filter != 0;
1034         DECLARE_BITMAP(seen_elems, 256);
1035         u32 crc = params->crc;
1036         const u8 *ie;
1037
1038         bitmap_zero(seen_elems, 256);
1039
1040         for_each_element(elem, params->start, params->len) {
1041                 bool elem_parse_failed;
1042                 u8 id = elem->id;
1043                 u8 elen = elem->datalen;
1044                 const u8 *pos = elem->data;
1045
1046                 if (check_inherit &&
1047                     !cfg80211_is_element_inherited(elem,
1048                                                    check_inherit))
1049                         continue;
1050
1051                 switch (id) {
1052                 case WLAN_EID_SSID:
1053                 case WLAN_EID_SUPP_RATES:
1054                 case WLAN_EID_FH_PARAMS:
1055                 case WLAN_EID_DS_PARAMS:
1056                 case WLAN_EID_CF_PARAMS:
1057                 case WLAN_EID_TIM:
1058                 case WLAN_EID_IBSS_PARAMS:
1059                 case WLAN_EID_CHALLENGE:
1060                 case WLAN_EID_RSN:
1061                 case WLAN_EID_ERP_INFO:
1062                 case WLAN_EID_EXT_SUPP_RATES:
1063                 case WLAN_EID_HT_CAPABILITY:
1064                 case WLAN_EID_HT_OPERATION:
1065                 case WLAN_EID_VHT_CAPABILITY:
1066                 case WLAN_EID_VHT_OPERATION:
1067                 case WLAN_EID_MESH_ID:
1068                 case WLAN_EID_MESH_CONFIG:
1069                 case WLAN_EID_PEER_MGMT:
1070                 case WLAN_EID_PREQ:
1071                 case WLAN_EID_PREP:
1072                 case WLAN_EID_PERR:
1073                 case WLAN_EID_RANN:
1074                 case WLAN_EID_CHANNEL_SWITCH:
1075                 case WLAN_EID_EXT_CHANSWITCH_ANN:
1076                 case WLAN_EID_COUNTRY:
1077                 case WLAN_EID_PWR_CONSTRAINT:
1078                 case WLAN_EID_TIMEOUT_INTERVAL:
1079                 case WLAN_EID_SECONDARY_CHANNEL_OFFSET:
1080                 case WLAN_EID_WIDE_BW_CHANNEL_SWITCH:
1081                 case WLAN_EID_CHAN_SWITCH_PARAM:
1082                 case WLAN_EID_EXT_CAPABILITY:
1083                 case WLAN_EID_CHAN_SWITCH_TIMING:
1084                 case WLAN_EID_LINK_ID:
1085                 case WLAN_EID_BSS_MAX_IDLE_PERIOD:
1086                 case WLAN_EID_RSNX:
1087                 case WLAN_EID_S1G_BCN_COMPAT:
1088                 case WLAN_EID_S1G_CAPABILITIES:
1089                 case WLAN_EID_S1G_OPERATION:
1090                 case WLAN_EID_AID_RESPONSE:
1091                 case WLAN_EID_S1G_SHORT_BCN_INTERVAL:
1092                 /*
1093                  * not listing WLAN_EID_CHANNEL_SWITCH_WRAPPER -- it seems possible
1094                  * that if the content gets bigger it might be needed more than once
1095                  */
1096                         if (test_bit(id, seen_elems)) {
1097                                 elems->parse_error = true;
1098                                 continue;
1099                         }
1100                         break;
1101                 }
1102
1103                 if (calc_crc && id < 64 && (params->filter & (1ULL << id)))
1104                         crc = crc32_be(crc, pos - 2, elen + 2);
1105
1106                 elem_parse_failed = false;
1107
1108                 switch (id) {
1109                 case WLAN_EID_LINK_ID:
1110                         if (elen + 2 < sizeof(struct ieee80211_tdls_lnkie)) {
1111                                 elem_parse_failed = true;
1112                                 break;
1113                         }
1114                         elems->lnk_id = (void *)(pos - 2);
1115                         break;
1116                 case WLAN_EID_CHAN_SWITCH_TIMING:
1117                         if (elen < sizeof(struct ieee80211_ch_switch_timing)) {
1118                                 elem_parse_failed = true;
1119                                 break;
1120                         }
1121                         elems->ch_sw_timing = (void *)pos;
1122                         break;
1123                 case WLAN_EID_EXT_CAPABILITY:
1124                         elems->ext_capab = pos;
1125                         elems->ext_capab_len = elen;
1126                         break;
1127                 case WLAN_EID_SSID:
1128                         elems->ssid = pos;
1129                         elems->ssid_len = elen;
1130                         break;
1131                 case WLAN_EID_SUPP_RATES:
1132                         elems->supp_rates = pos;
1133                         elems->supp_rates_len = elen;
1134                         break;
1135                 case WLAN_EID_DS_PARAMS:
1136                         if (elen >= 1)
1137                                 elems->ds_params = pos;
1138                         else
1139                                 elem_parse_failed = true;
1140                         break;
1141                 case WLAN_EID_TIM:
1142                         if (elen >= sizeof(struct ieee80211_tim_ie)) {
1143                                 elems->tim = (void *)pos;
1144                                 elems->tim_len = elen;
1145                         } else
1146                                 elem_parse_failed = true;
1147                         break;
1148                 case WLAN_EID_VENDOR_SPECIFIC:
1149                         if (elen >= 4 && pos[0] == 0x00 && pos[1] == 0x50 &&
1150                             pos[2] == 0xf2) {
1151                                 /* Microsoft OUI (00:50:F2) */
1152
1153                                 if (calc_crc)
1154                                         crc = crc32_be(crc, pos - 2, elen + 2);
1155
1156                                 if (elen >= 5 && pos[3] == 2) {
1157                                         /* OUI Type 2 - WMM IE */
1158                                         if (pos[4] == 0) {
1159                                                 elems->wmm_info = pos;
1160                                                 elems->wmm_info_len = elen;
1161                                         } else if (pos[4] == 1) {
1162                                                 elems->wmm_param = pos;
1163                                                 elems->wmm_param_len = elen;
1164                                         }
1165                                 }
1166                         }
1167                         break;
1168                 case WLAN_EID_RSN:
1169                         elems->rsn = pos;
1170                         elems->rsn_len = elen;
1171                         break;
1172                 case WLAN_EID_ERP_INFO:
1173                         if (elen >= 1)
1174                                 elems->erp_info = pos;
1175                         else
1176                                 elem_parse_failed = true;
1177                         break;
1178                 case WLAN_EID_EXT_SUPP_RATES:
1179                         elems->ext_supp_rates = pos;
1180                         elems->ext_supp_rates_len = elen;
1181                         break;
1182                 case WLAN_EID_HT_CAPABILITY:
1183                         if (elen >= sizeof(struct ieee80211_ht_cap))
1184                                 elems->ht_cap_elem = (void *)pos;
1185                         else
1186                                 elem_parse_failed = true;
1187                         break;
1188                 case WLAN_EID_HT_OPERATION:
1189                         if (elen >= sizeof(struct ieee80211_ht_operation))
1190                                 elems->ht_operation = (void *)pos;
1191                         else
1192                                 elem_parse_failed = true;
1193                         break;
1194                 case WLAN_EID_VHT_CAPABILITY:
1195                         if (elen >= sizeof(struct ieee80211_vht_cap))
1196                                 elems->vht_cap_elem = (void *)pos;
1197                         else
1198                                 elem_parse_failed = true;
1199                         break;
1200                 case WLAN_EID_VHT_OPERATION:
1201                         if (elen >= sizeof(struct ieee80211_vht_operation)) {
1202                                 elems->vht_operation = (void *)pos;
1203                                 if (calc_crc)
1204                                         crc = crc32_be(crc, pos - 2, elen + 2);
1205                                 break;
1206                         }
1207                         elem_parse_failed = true;
1208                         break;
1209                 case WLAN_EID_OPMODE_NOTIF:
1210                         if (elen > 0) {
1211                                 elems->opmode_notif = pos;
1212                                 if (calc_crc)
1213                                         crc = crc32_be(crc, pos - 2, elen + 2);
1214                                 break;
1215                         }
1216                         elem_parse_failed = true;
1217                         break;
1218                 case WLAN_EID_MESH_ID:
1219                         elems->mesh_id = pos;
1220                         elems->mesh_id_len = elen;
1221                         break;
1222                 case WLAN_EID_MESH_CONFIG:
1223                         if (elen >= sizeof(struct ieee80211_meshconf_ie))
1224                                 elems->mesh_config = (void *)pos;
1225                         else
1226                                 elem_parse_failed = true;
1227                         break;
1228                 case WLAN_EID_PEER_MGMT:
1229                         elems->peering = pos;
1230                         elems->peering_len = elen;
1231                         break;
1232                 case WLAN_EID_MESH_AWAKE_WINDOW:
1233                         if (elen >= 2)
1234                                 elems->awake_window = (void *)pos;
1235                         break;
1236                 case WLAN_EID_PREQ:
1237                         elems->preq = pos;
1238                         elems->preq_len = elen;
1239                         break;
1240                 case WLAN_EID_PREP:
1241                         elems->prep = pos;
1242                         elems->prep_len = elen;
1243                         break;
1244                 case WLAN_EID_PERR:
1245                         elems->perr = pos;
1246                         elems->perr_len = elen;
1247                         break;
1248                 case WLAN_EID_RANN:
1249                         if (elen >= sizeof(struct ieee80211_rann_ie))
1250                                 elems->rann = (void *)pos;
1251                         else
1252                                 elem_parse_failed = true;
1253                         break;
1254                 case WLAN_EID_CHANNEL_SWITCH:
1255                         if (elen != sizeof(struct ieee80211_channel_sw_ie)) {
1256                                 elem_parse_failed = true;
1257                                 break;
1258                         }
1259                         elems->ch_switch_ie = (void *)pos;
1260                         break;
1261                 case WLAN_EID_EXT_CHANSWITCH_ANN:
1262                         if (elen != sizeof(struct ieee80211_ext_chansw_ie)) {
1263                                 elem_parse_failed = true;
1264                                 break;
1265                         }
1266                         elems->ext_chansw_ie = (void *)pos;
1267                         break;
1268                 case WLAN_EID_SECONDARY_CHANNEL_OFFSET:
1269                         if (elen != sizeof(struct ieee80211_sec_chan_offs_ie)) {
1270                                 elem_parse_failed = true;
1271                                 break;
1272                         }
1273                         elems->sec_chan_offs = (void *)pos;
1274                         break;
1275                 case WLAN_EID_CHAN_SWITCH_PARAM:
1276                         if (elen <
1277                             sizeof(*elems->mesh_chansw_params_ie)) {
1278                                 elem_parse_failed = true;
1279                                 break;
1280                         }
1281                         elems->mesh_chansw_params_ie = (void *)pos;
1282                         break;
1283                 case WLAN_EID_WIDE_BW_CHANNEL_SWITCH:
1284                         if (!params->action ||
1285                             elen < sizeof(*elems->wide_bw_chansw_ie)) {
1286                                 elem_parse_failed = true;
1287                                 break;
1288                         }
1289                         elems->wide_bw_chansw_ie = (void *)pos;
1290                         break;
1291                 case WLAN_EID_CHANNEL_SWITCH_WRAPPER:
1292                         if (params->action) {
1293                                 elem_parse_failed = true;
1294                                 break;
1295                         }
1296                         /*
1297                          * This is a bit tricky, but as we only care about
1298                          * the wide bandwidth channel switch element, so
1299                          * just parse it out manually.
1300                          */
1301                         ie = cfg80211_find_ie(WLAN_EID_WIDE_BW_CHANNEL_SWITCH,
1302                                               pos, elen);
1303                         if (ie) {
1304                                 if (ie[1] >= sizeof(*elems->wide_bw_chansw_ie))
1305                                         elems->wide_bw_chansw_ie =
1306                                                 (void *)(ie + 2);
1307                                 else
1308                                         elem_parse_failed = true;
1309                         }
1310                         break;
1311                 case WLAN_EID_COUNTRY:
1312                         elems->country_elem = pos;
1313                         elems->country_elem_len = elen;
1314                         break;
1315                 case WLAN_EID_PWR_CONSTRAINT:
1316                         if (elen != 1) {
1317                                 elem_parse_failed = true;
1318                                 break;
1319                         }
1320                         elems->pwr_constr_elem = pos;
1321                         break;
1322                 case WLAN_EID_CISCO_VENDOR_SPECIFIC:
1323                         /* Lots of different options exist, but we only care
1324                          * about the Dynamic Transmit Power Control element.
1325                          * First check for the Cisco OUI, then for the DTPC
1326                          * tag (0x00).
1327                          */
1328                         if (elen < 4) {
1329                                 elem_parse_failed = true;
1330                                 break;
1331                         }
1332
1333                         if (pos[0] != 0x00 || pos[1] != 0x40 ||
1334                             pos[2] != 0x96 || pos[3] != 0x00)
1335                                 break;
1336
1337                         if (elen != 6) {
1338                                 elem_parse_failed = true;
1339                                 break;
1340                         }
1341
1342                         if (calc_crc)
1343                                 crc = crc32_be(crc, pos - 2, elen + 2);
1344
1345                         elems->cisco_dtpc_elem = pos;
1346                         break;
1347                 case WLAN_EID_ADDBA_EXT:
1348                         if (elen < sizeof(struct ieee80211_addba_ext_ie)) {
1349                                 elem_parse_failed = true;
1350                                 break;
1351                         }
1352                         elems->addba_ext_ie = (void *)pos;
1353                         break;
1354                 case WLAN_EID_TIMEOUT_INTERVAL:
1355                         if (elen >= sizeof(struct ieee80211_timeout_interval_ie))
1356                                 elems->timeout_int = (void *)pos;
1357                         else
1358                                 elem_parse_failed = true;
1359                         break;
1360                 case WLAN_EID_BSS_MAX_IDLE_PERIOD:
1361                         if (elen >= sizeof(*elems->max_idle_period_ie))
1362                                 elems->max_idle_period_ie = (void *)pos;
1363                         break;
1364                 case WLAN_EID_RSNX:
1365                         elems->rsnx = pos;
1366                         elems->rsnx_len = elen;
1367                         break;
1368                 case WLAN_EID_TX_POWER_ENVELOPE:
1369                         if (elen < 1 ||
1370                             elen > sizeof(struct ieee80211_tx_pwr_env))
1371                                 break;
1372
1373                         if (elems->tx_pwr_env_num >= ARRAY_SIZE(elems->tx_pwr_env))
1374                                 break;
1375
1376                         elems->tx_pwr_env[elems->tx_pwr_env_num] = (void *)pos;
1377                         elems->tx_pwr_env_len[elems->tx_pwr_env_num] = elen;
1378                         elems->tx_pwr_env_num++;
1379                         break;
1380                 case WLAN_EID_EXTENSION:
1381                         ieee80211_parse_extension_element(calc_crc ?
1382                                                                 &crc : NULL,
1383                                                           elem, elems, params);
1384                         break;
1385                 case WLAN_EID_S1G_CAPABILITIES:
1386                         if (elen >= sizeof(*elems->s1g_capab))
1387                                 elems->s1g_capab = (void *)pos;
1388                         else
1389                                 elem_parse_failed = true;
1390                         break;
1391                 case WLAN_EID_S1G_OPERATION:
1392                         if (elen == sizeof(*elems->s1g_oper))
1393                                 elems->s1g_oper = (void *)pos;
1394                         else
1395                                 elem_parse_failed = true;
1396                         break;
1397                 case WLAN_EID_S1G_BCN_COMPAT:
1398                         if (elen == sizeof(*elems->s1g_bcn_compat))
1399                                 elems->s1g_bcn_compat = (void *)pos;
1400                         else
1401                                 elem_parse_failed = true;
1402                         break;
1403                 case WLAN_EID_AID_RESPONSE:
1404                         if (elen == sizeof(struct ieee80211_aid_response_ie))
1405                                 elems->aid_resp = (void *)pos;
1406                         else
1407                                 elem_parse_failed = true;
1408                         break;
1409                 default:
1410                         break;
1411                 }
1412
1413                 if (elem_parse_failed)
1414                         elems->parse_error = true;
1415                 else
1416                         __set_bit(id, seen_elems);
1417         }
1418
1419         if (!for_each_element_completed(elem, params->start, params->len))
1420                 elems->parse_error = true;
1421
1422         return crc;
1423 }
1424
1425 static size_t ieee802_11_find_bssid_profile(const u8 *start, size_t len,
1426                                             struct ieee802_11_elems *elems,
1427                                             struct cfg80211_bss *bss,
1428                                             u8 *nontransmitted_profile)
1429 {
1430         const struct element *elem, *sub;
1431         size_t profile_len = 0;
1432         bool found = false;
1433
1434         if (!bss || !bss->transmitted_bss)
1435                 return profile_len;
1436
1437         for_each_element_id(elem, WLAN_EID_MULTIPLE_BSSID, start, len) {
1438                 if (elem->datalen < 2)
1439                         continue;
1440                 if (elem->data[0] < 1 || elem->data[0] > 8)
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(bss->transmitted_bss->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 *
1495 ieee802_11_parse_elems_full(struct ieee80211_elems_parse_params *params)
1496 {
1497         struct ieee802_11_elems *elems;
1498         const struct element *non_inherit = NULL;
1499         u8 *nontransmitted_profile;
1500         int nontransmitted_profile_len = 0;
1501         size_t scratch_len = params->len;
1502
1503         elems = kzalloc(sizeof(*elems) + scratch_len, GFP_ATOMIC);
1504         if (!elems)
1505                 return NULL;
1506         elems->ie_start = params->start;
1507         elems->total_len = params->len;
1508         elems->scratch_len = scratch_len;
1509         elems->scratch_pos = elems->scratch;
1510
1511         nontransmitted_profile = elems->scratch_pos;
1512         nontransmitted_profile_len =
1513                 ieee802_11_find_bssid_profile(params->start, params->len,
1514                                               elems, params->bss,
1515                                               nontransmitted_profile);
1516         elems->scratch_pos += nontransmitted_profile_len;
1517         elems->scratch_len -= nontransmitted_profile_len;
1518         non_inherit = cfg80211_find_ext_elem(WLAN_EID_EXT_NON_INHERITANCE,
1519                                              nontransmitted_profile,
1520                                              nontransmitted_profile_len);
1521
1522         elems->crc = _ieee802_11_parse_elems_full(params, elems, non_inherit);
1523
1524         /* Override with nontransmitted profile, if found */
1525         if (nontransmitted_profile_len) {
1526                 struct ieee80211_elems_parse_params sub = {
1527                         .start = nontransmitted_profile,
1528                         .len = nontransmitted_profile_len,
1529                         .action = params->action,
1530                         .link_id = params->link_id,
1531                 };
1532
1533                 _ieee802_11_parse_elems_full(&sub, elems, NULL);
1534         }
1535
1536         if (elems->tim && !elems->parse_error) {
1537                 const struct ieee80211_tim_ie *tim_ie = elems->tim;
1538
1539                 elems->dtim_period = tim_ie->dtim_period;
1540                 elems->dtim_count = tim_ie->dtim_count;
1541         }
1542
1543         /* Override DTIM period and count if needed */
1544         if (elems->bssid_index &&
1545             elems->bssid_index_len >=
1546             offsetofend(struct ieee80211_bssid_index, dtim_period))
1547                 elems->dtim_period = elems->bssid_index->dtim_period;
1548
1549         if (elems->bssid_index &&
1550             elems->bssid_index_len >=
1551             offsetofend(struct ieee80211_bssid_index, dtim_count))
1552                 elems->dtim_count = elems->bssid_index->dtim_count;
1553
1554         return elems;
1555 }
1556
1557 void ieee80211_regulatory_limit_wmm_params(struct ieee80211_sub_if_data *sdata,
1558                                            struct ieee80211_tx_queue_params
1559                                            *qparam, int ac)
1560 {
1561         struct ieee80211_chanctx_conf *chanctx_conf;
1562         const struct ieee80211_reg_rule *rrule;
1563         const struct ieee80211_wmm_ac *wmm_ac;
1564         u16 center_freq = 0;
1565
1566         if (sdata->vif.type != NL80211_IFTYPE_AP &&
1567             sdata->vif.type != NL80211_IFTYPE_STATION)
1568                 return;
1569
1570         rcu_read_lock();
1571         chanctx_conf = rcu_dereference(sdata->vif.bss_conf.chanctx_conf);
1572         if (chanctx_conf)
1573                 center_freq = chanctx_conf->def.chan->center_freq;
1574
1575         if (!center_freq) {
1576                 rcu_read_unlock();
1577                 return;
1578         }
1579
1580         rrule = freq_reg_info(sdata->wdev.wiphy, MHZ_TO_KHZ(center_freq));
1581
1582         if (IS_ERR_OR_NULL(rrule) || !rrule->has_wmm) {
1583                 rcu_read_unlock();
1584                 return;
1585         }
1586
1587         if (sdata->vif.type == NL80211_IFTYPE_AP)
1588                 wmm_ac = &rrule->wmm_rule.ap[ac];
1589         else
1590                 wmm_ac = &rrule->wmm_rule.client[ac];
1591         qparam->cw_min = max_t(u16, qparam->cw_min, wmm_ac->cw_min);
1592         qparam->cw_max = max_t(u16, qparam->cw_max, wmm_ac->cw_max);
1593         qparam->aifs = max_t(u8, qparam->aifs, wmm_ac->aifsn);
1594         qparam->txop = min_t(u16, qparam->txop, wmm_ac->cot / 32);
1595         rcu_read_unlock();
1596 }
1597
1598 void ieee80211_set_wmm_default(struct ieee80211_link_data *link,
1599                                bool bss_notify, bool enable_qos)
1600 {
1601         struct ieee80211_sub_if_data *sdata = link->sdata;
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(link->conf->chanctx_conf);
1620         use_11b = (chanctx_conf &&
1621                    chanctx_conf->def.chan->band == NL80211_BAND_2GHZ) &&
1622                  !link->operating_11g_mode;
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                 link->tx_conf[ac] = qparam;
1697                 drv_conf_tx(local, link, 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                 link->conf->qos = enable_qos;
1704                 if (bss_notify)
1705                         ieee80211_link_info_change_notify(sdata, link,
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         bool multi_link = sdata->vif.valid_links;
1720         struct {
1721                 u8 id;
1722                 u8 len;
1723                 u8 ext_id;
1724                 struct ieee80211_multi_link_elem ml;
1725                 struct ieee80211_mle_basic_common_info basic;
1726         } __packed mle = {
1727                 .id = WLAN_EID_EXTENSION,
1728                 .len = sizeof(mle) - 2,
1729                 .ext_id = WLAN_EID_EXT_EHT_MULTI_LINK,
1730                 .ml.control = cpu_to_le16(IEEE80211_ML_CONTROL_TYPE_BASIC),
1731                 .basic.len = sizeof(mle.basic),
1732         };
1733         int err;
1734
1735         memcpy(mle.basic.mld_mac_addr, sdata->vif.addr, ETH_ALEN);
1736
1737         /* 24 + 6 = header + auth_algo + auth_transaction + status_code */
1738         skb = dev_alloc_skb(local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN +
1739                             24 + 6 + extra_len + IEEE80211_WEP_ICV_LEN +
1740                             multi_link * sizeof(mle));
1741         if (!skb)
1742                 return;
1743
1744         skb_reserve(skb, local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN);
1745
1746         mgmt = skb_put_zero(skb, 24 + 6);
1747         mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
1748                                           IEEE80211_STYPE_AUTH);
1749         memcpy(mgmt->da, da, ETH_ALEN);
1750         memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
1751         memcpy(mgmt->bssid, bssid, ETH_ALEN);
1752         mgmt->u.auth.auth_alg = cpu_to_le16(auth_alg);
1753         mgmt->u.auth.auth_transaction = cpu_to_le16(transaction);
1754         mgmt->u.auth.status_code = cpu_to_le16(status);
1755         if (extra)
1756                 skb_put_data(skb, extra, extra_len);
1757         if (multi_link)
1758                 skb_put_data(skb, &mle, sizeof(mle));
1759
1760         if (auth_alg == WLAN_AUTH_SHARED_KEY && transaction == 3) {
1761                 mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
1762                 err = ieee80211_wep_encrypt(local, skb, key, key_len, key_idx);
1763                 if (WARN_ON(err)) {
1764                         kfree_skb(skb);
1765                         return;
1766                 }
1767         }
1768
1769         IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT |
1770                                         tx_flags;
1771         ieee80211_tx_skb(sdata, skb);
1772 }
1773
1774 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
1775                                     const u8 *da, const u8 *bssid,
1776                                     u16 stype, u16 reason,
1777                                     bool send_frame, u8 *frame_buf)
1778 {
1779         struct ieee80211_local *local = sdata->local;
1780         struct sk_buff *skb;
1781         struct ieee80211_mgmt *mgmt = (void *)frame_buf;
1782
1783         /* build frame */
1784         mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | stype);
1785         mgmt->duration = 0; /* initialize only */
1786         mgmt->seq_ctrl = 0; /* initialize only */
1787         memcpy(mgmt->da, da, ETH_ALEN);
1788         memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
1789         memcpy(mgmt->bssid, bssid, ETH_ALEN);
1790         /* u.deauth.reason_code == u.disassoc.reason_code */
1791         mgmt->u.deauth.reason_code = cpu_to_le16(reason);
1792
1793         if (send_frame) {
1794                 skb = dev_alloc_skb(local->hw.extra_tx_headroom +
1795                                     IEEE80211_DEAUTH_FRAME_LEN);
1796                 if (!skb)
1797                         return;
1798
1799                 skb_reserve(skb, local->hw.extra_tx_headroom);
1800
1801                 /* copy in frame */
1802                 skb_put_data(skb, mgmt, IEEE80211_DEAUTH_FRAME_LEN);
1803
1804                 if (sdata->vif.type != NL80211_IFTYPE_STATION ||
1805                     !(sdata->u.mgd.flags & IEEE80211_STA_MFP_ENABLED))
1806                         IEEE80211_SKB_CB(skb)->flags |=
1807                                 IEEE80211_TX_INTFL_DONT_ENCRYPT;
1808
1809                 ieee80211_tx_skb(sdata, skb);
1810         }
1811 }
1812
1813 static u8 *ieee80211_write_he_6ghz_cap(u8 *pos, __le16 cap, u8 *end)
1814 {
1815         if ((end - pos) < 5)
1816                 return pos;
1817
1818         *pos++ = WLAN_EID_EXTENSION;
1819         *pos++ = 1 + sizeof(cap);
1820         *pos++ = WLAN_EID_EXT_HE_6GHZ_CAPA;
1821         memcpy(pos, &cap, sizeof(cap));
1822
1823         return pos + 2;
1824 }
1825
1826 static int ieee80211_build_preq_ies_band(struct ieee80211_sub_if_data *sdata,
1827                                          u8 *buffer, size_t buffer_len,
1828                                          const u8 *ie, size_t ie_len,
1829                                          enum nl80211_band band,
1830                                          u32 rate_mask,
1831                                          struct cfg80211_chan_def *chandef,
1832                                          size_t *offset, u32 flags)
1833 {
1834         struct ieee80211_local *local = sdata->local;
1835         struct ieee80211_supported_band *sband;
1836         const struct ieee80211_sta_he_cap *he_cap;
1837         const struct ieee80211_sta_eht_cap *eht_cap;
1838         u8 *pos = buffer, *end = buffer + buffer_len;
1839         size_t noffset;
1840         int supp_rates_len, i;
1841         u8 rates[32];
1842         int num_rates;
1843         int ext_rates_len;
1844         int shift;
1845         u32 rate_flags;
1846         bool have_80mhz = false;
1847
1848         *offset = 0;
1849
1850         sband = local->hw.wiphy->bands[band];
1851         if (WARN_ON_ONCE(!sband))
1852                 return 0;
1853
1854         rate_flags = ieee80211_chandef_rate_flags(chandef);
1855         shift = ieee80211_chandef_get_shift(chandef);
1856
1857         num_rates = 0;
1858         for (i = 0; i < sband->n_bitrates; i++) {
1859                 if ((BIT(i) & rate_mask) == 0)
1860                         continue; /* skip rate */
1861                 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
1862                         continue;
1863
1864                 rates[num_rates++] =
1865                         (u8) DIV_ROUND_UP(sband->bitrates[i].bitrate,
1866                                           (1 << shift) * 5);
1867         }
1868
1869         supp_rates_len = min_t(int, num_rates, 8);
1870
1871         if (end - pos < 2 + supp_rates_len)
1872                 goto out_err;
1873         *pos++ = WLAN_EID_SUPP_RATES;
1874         *pos++ = supp_rates_len;
1875         memcpy(pos, rates, supp_rates_len);
1876         pos += supp_rates_len;
1877
1878         /* insert "request information" if in custom IEs */
1879         if (ie && ie_len) {
1880                 static const u8 before_extrates[] = {
1881                         WLAN_EID_SSID,
1882                         WLAN_EID_SUPP_RATES,
1883                         WLAN_EID_REQUEST,
1884                 };
1885                 noffset = ieee80211_ie_split(ie, ie_len,
1886                                              before_extrates,
1887                                              ARRAY_SIZE(before_extrates),
1888                                              *offset);
1889                 if (end - pos < noffset - *offset)
1890                         goto out_err;
1891                 memcpy(pos, ie + *offset, noffset - *offset);
1892                 pos += noffset - *offset;
1893                 *offset = noffset;
1894         }
1895
1896         ext_rates_len = num_rates - supp_rates_len;
1897         if (ext_rates_len > 0) {
1898                 if (end - pos < 2 + ext_rates_len)
1899                         goto out_err;
1900                 *pos++ = WLAN_EID_EXT_SUPP_RATES;
1901                 *pos++ = ext_rates_len;
1902                 memcpy(pos, rates + supp_rates_len, ext_rates_len);
1903                 pos += ext_rates_len;
1904         }
1905
1906         if (chandef->chan && sband->band == NL80211_BAND_2GHZ) {
1907                 if (end - pos < 3)
1908                         goto out_err;
1909                 *pos++ = WLAN_EID_DS_PARAMS;
1910                 *pos++ = 1;
1911                 *pos++ = ieee80211_frequency_to_channel(
1912                                 chandef->chan->center_freq);
1913         }
1914
1915         if (flags & IEEE80211_PROBE_FLAG_MIN_CONTENT)
1916                 goto done;
1917
1918         /* insert custom IEs that go before HT */
1919         if (ie && ie_len) {
1920                 static const u8 before_ht[] = {
1921                         /*
1922                          * no need to list the ones split off already
1923                          * (or generated here)
1924                          */
1925                         WLAN_EID_DS_PARAMS,
1926                         WLAN_EID_SUPPORTED_REGULATORY_CLASSES,
1927                 };
1928                 noffset = ieee80211_ie_split(ie, ie_len,
1929                                              before_ht, ARRAY_SIZE(before_ht),
1930                                              *offset);
1931                 if (end - pos < noffset - *offset)
1932                         goto out_err;
1933                 memcpy(pos, ie + *offset, noffset - *offset);
1934                 pos += noffset - *offset;
1935                 *offset = noffset;
1936         }
1937
1938         if (sband->ht_cap.ht_supported) {
1939                 if (end - pos < 2 + sizeof(struct ieee80211_ht_cap))
1940                         goto out_err;
1941                 pos = ieee80211_ie_build_ht_cap(pos, &sband->ht_cap,
1942                                                 sband->ht_cap.cap);
1943         }
1944
1945         /* insert custom IEs that go before VHT */
1946         if (ie && ie_len) {
1947                 static const u8 before_vht[] = {
1948                         /*
1949                          * no need to list the ones split off already
1950                          * (or generated here)
1951                          */
1952                         WLAN_EID_BSS_COEX_2040,
1953                         WLAN_EID_EXT_CAPABILITY,
1954                         WLAN_EID_SSID_LIST,
1955                         WLAN_EID_CHANNEL_USAGE,
1956                         WLAN_EID_INTERWORKING,
1957                         WLAN_EID_MESH_ID,
1958                         /* 60 GHz (Multi-band, DMG, MMS) can't happen */
1959                 };
1960                 noffset = ieee80211_ie_split(ie, ie_len,
1961                                              before_vht, ARRAY_SIZE(before_vht),
1962                                              *offset);
1963                 if (end - pos < noffset - *offset)
1964                         goto out_err;
1965                 memcpy(pos, ie + *offset, noffset - *offset);
1966                 pos += noffset - *offset;
1967                 *offset = noffset;
1968         }
1969
1970         /* Check if any channel in this sband supports at least 80 MHz */
1971         for (i = 0; i < sband->n_channels; i++) {
1972                 if (sband->channels[i].flags & (IEEE80211_CHAN_DISABLED |
1973                                                 IEEE80211_CHAN_NO_80MHZ))
1974                         continue;
1975
1976                 have_80mhz = true;
1977                 break;
1978         }
1979
1980         if (sband->vht_cap.vht_supported && have_80mhz) {
1981                 if (end - pos < 2 + sizeof(struct ieee80211_vht_cap))
1982                         goto out_err;
1983                 pos = ieee80211_ie_build_vht_cap(pos, &sband->vht_cap,
1984                                                  sband->vht_cap.cap);
1985         }
1986
1987         /* insert custom IEs that go before HE */
1988         if (ie && ie_len) {
1989                 static const u8 before_he[] = {
1990                         /*
1991                          * no need to list the ones split off before VHT
1992                          * or generated here
1993                          */
1994                         WLAN_EID_EXTENSION, WLAN_EID_EXT_FILS_REQ_PARAMS,
1995                         WLAN_EID_AP_CSN,
1996                         /* TODO: add 11ah/11aj/11ak elements */
1997                 };
1998                 noffset = ieee80211_ie_split(ie, ie_len,
1999                                              before_he, ARRAY_SIZE(before_he),
2000                                              *offset);
2001                 if (end - pos < noffset - *offset)
2002                         goto out_err;
2003                 memcpy(pos, ie + *offset, noffset - *offset);
2004                 pos += noffset - *offset;
2005                 *offset = noffset;
2006         }
2007
2008         he_cap = ieee80211_get_he_iftype_cap(sband,
2009                                              ieee80211_vif_type_p2p(&sdata->vif));
2010         if (he_cap &&
2011             cfg80211_any_usable_channels(local->hw.wiphy, BIT(sband->band),
2012                                          IEEE80211_CHAN_NO_HE)) {
2013                 pos = ieee80211_ie_build_he_cap(0, pos, he_cap, end);
2014                 if (!pos)
2015                         goto out_err;
2016         }
2017
2018         eht_cap = ieee80211_get_eht_iftype_cap(sband,
2019                                                ieee80211_vif_type_p2p(&sdata->vif));
2020
2021         if (eht_cap &&
2022             cfg80211_any_usable_channels(local->hw.wiphy, BIT(sband->band),
2023                                          IEEE80211_CHAN_NO_HE |
2024                                          IEEE80211_CHAN_NO_EHT)) {
2025                 pos = ieee80211_ie_build_eht_cap(pos, he_cap, eht_cap, end,
2026                                                  sdata->vif.type == NL80211_IFTYPE_AP);
2027                 if (!pos)
2028                         goto out_err;
2029         }
2030
2031         if (cfg80211_any_usable_channels(local->hw.wiphy,
2032                                          BIT(NL80211_BAND_6GHZ),
2033                                          IEEE80211_CHAN_NO_HE)) {
2034                 struct ieee80211_supported_band *sband6;
2035
2036                 sband6 = local->hw.wiphy->bands[NL80211_BAND_6GHZ];
2037                 he_cap = ieee80211_get_he_iftype_cap(sband6,
2038                                 ieee80211_vif_type_p2p(&sdata->vif));
2039
2040                 if (he_cap) {
2041                         enum nl80211_iftype iftype =
2042                                 ieee80211_vif_type_p2p(&sdata->vif);
2043                         __le16 cap = ieee80211_get_he_6ghz_capa(sband6, iftype);
2044
2045                         pos = ieee80211_write_he_6ghz_cap(pos, cap, end);
2046                 }
2047         }
2048
2049         /*
2050          * If adding more here, adjust code in main.c
2051          * that calculates local->scan_ies_len.
2052          */
2053
2054         return pos - buffer;
2055  out_err:
2056         WARN_ONCE(1, "not enough space for preq IEs\n");
2057  done:
2058         return pos - buffer;
2059 }
2060
2061 int ieee80211_build_preq_ies(struct ieee80211_sub_if_data *sdata, u8 *buffer,
2062                              size_t buffer_len,
2063                              struct ieee80211_scan_ies *ie_desc,
2064                              const u8 *ie, size_t ie_len,
2065                              u8 bands_used, u32 *rate_masks,
2066                              struct cfg80211_chan_def *chandef,
2067                              u32 flags)
2068 {
2069         size_t pos = 0, old_pos = 0, custom_ie_offset = 0;
2070         int i;
2071
2072         memset(ie_desc, 0, sizeof(*ie_desc));
2073
2074         for (i = 0; i < NUM_NL80211_BANDS; i++) {
2075                 if (bands_used & BIT(i)) {
2076                         pos += ieee80211_build_preq_ies_band(sdata,
2077                                                              buffer + pos,
2078                                                              buffer_len - pos,
2079                                                              ie, ie_len, i,
2080                                                              rate_masks[i],
2081                                                              chandef,
2082                                                              &custom_ie_offset,
2083                                                              flags);
2084                         ie_desc->ies[i] = buffer + old_pos;
2085                         ie_desc->len[i] = pos - old_pos;
2086                         old_pos = pos;
2087                 }
2088         }
2089
2090         /* add any remaining custom IEs */
2091         if (ie && ie_len) {
2092                 if (WARN_ONCE(buffer_len - pos < ie_len - custom_ie_offset,
2093                               "not enough space for preq custom IEs\n"))
2094                         return pos;
2095                 memcpy(buffer + pos, ie + custom_ie_offset,
2096                        ie_len - custom_ie_offset);
2097                 ie_desc->common_ies = buffer + pos;
2098                 ie_desc->common_ie_len = ie_len - custom_ie_offset;
2099                 pos += ie_len - custom_ie_offset;
2100         }
2101
2102         return pos;
2103 };
2104
2105 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
2106                                           const u8 *src, const u8 *dst,
2107                                           u32 ratemask,
2108                                           struct ieee80211_channel *chan,
2109                                           const u8 *ssid, size_t ssid_len,
2110                                           const u8 *ie, size_t ie_len,
2111                                           u32 flags)
2112 {
2113         struct ieee80211_local *local = sdata->local;
2114         struct cfg80211_chan_def chandef;
2115         struct sk_buff *skb;
2116         struct ieee80211_mgmt *mgmt;
2117         int ies_len;
2118         u32 rate_masks[NUM_NL80211_BANDS] = {};
2119         struct ieee80211_scan_ies dummy_ie_desc;
2120
2121         /*
2122          * Do not send DS Channel parameter for directed probe requests
2123          * in order to maximize the chance that we get a response.  Some
2124          * badly-behaved APs don't respond when this parameter is included.
2125          */
2126         chandef.width = sdata->vif.bss_conf.chandef.width;
2127         if (flags & IEEE80211_PROBE_FLAG_DIRECTED)
2128                 chandef.chan = NULL;
2129         else
2130                 chandef.chan = chan;
2131
2132         skb = ieee80211_probereq_get(&local->hw, src, ssid, ssid_len,
2133                                      local->scan_ies_len + ie_len);
2134         if (!skb)
2135                 return NULL;
2136
2137         rate_masks[chan->band] = ratemask;
2138         ies_len = ieee80211_build_preq_ies(sdata, skb_tail_pointer(skb),
2139                                            skb_tailroom(skb), &dummy_ie_desc,
2140                                            ie, ie_len, BIT(chan->band),
2141                                            rate_masks, &chandef, flags);
2142         skb_put(skb, ies_len);
2143
2144         if (dst) {
2145                 mgmt = (struct ieee80211_mgmt *) skb->data;
2146                 memcpy(mgmt->da, dst, ETH_ALEN);
2147                 memcpy(mgmt->bssid, dst, ETH_ALEN);
2148         }
2149
2150         IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
2151
2152         return skb;
2153 }
2154
2155 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
2156                             struct ieee802_11_elems *elems,
2157                             enum nl80211_band band, u32 *basic_rates)
2158 {
2159         struct ieee80211_supported_band *sband;
2160         size_t num_rates;
2161         u32 supp_rates, rate_flags;
2162         int i, j, shift;
2163
2164         sband = sdata->local->hw.wiphy->bands[band];
2165         if (WARN_ON(!sband))
2166                 return 1;
2167
2168         rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef);
2169         shift = ieee80211_vif_get_shift(&sdata->vif);
2170
2171         num_rates = sband->n_bitrates;
2172         supp_rates = 0;
2173         for (i = 0; i < elems->supp_rates_len +
2174                      elems->ext_supp_rates_len; i++) {
2175                 u8 rate = 0;
2176                 int own_rate;
2177                 bool is_basic;
2178                 if (i < elems->supp_rates_len)
2179                         rate = elems->supp_rates[i];
2180                 else if (elems->ext_supp_rates)
2181                         rate = elems->ext_supp_rates
2182                                 [i - elems->supp_rates_len];
2183                 own_rate = 5 * (rate & 0x7f);
2184                 is_basic = !!(rate & 0x80);
2185
2186                 if (is_basic && (rate & 0x7f) == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
2187                         continue;
2188
2189                 for (j = 0; j < num_rates; j++) {
2190                         int brate;
2191                         if ((rate_flags & sband->bitrates[j].flags)
2192                             != rate_flags)
2193                                 continue;
2194
2195                         brate = DIV_ROUND_UP(sband->bitrates[j].bitrate,
2196                                              1 << shift);
2197
2198                         if (brate == own_rate) {
2199                                 supp_rates |= BIT(j);
2200                                 if (basic_rates && is_basic)
2201                                         *basic_rates |= BIT(j);
2202                         }
2203                 }
2204         }
2205         return supp_rates;
2206 }
2207
2208 void ieee80211_stop_device(struct ieee80211_local *local)
2209 {
2210         ieee80211_led_radio(local, false);
2211         ieee80211_mod_tpt_led_trig(local, 0, IEEE80211_TPT_LEDTRIG_FL_RADIO);
2212
2213         cancel_work_sync(&local->reconfig_filter);
2214
2215         flush_workqueue(local->workqueue);
2216         drv_stop(local);
2217 }
2218
2219 static void ieee80211_flush_completed_scan(struct ieee80211_local *local,
2220                                            bool aborted)
2221 {
2222         /* It's possible that we don't handle the scan completion in
2223          * time during suspend, so if it's still marked as completed
2224          * here, queue the work and flush it to clean things up.
2225          * Instead of calling the worker function directly here, we
2226          * really queue it to avoid potential races with other flows
2227          * scheduling the same work.
2228          */
2229         if (test_bit(SCAN_COMPLETED, &local->scanning)) {
2230                 /* If coming from reconfiguration failure, abort the scan so
2231                  * we don't attempt to continue a partial HW scan - which is
2232                  * possible otherwise if (e.g.) the 2.4 GHz portion was the
2233                  * completed scan, and a 5 GHz portion is still pending.
2234                  */
2235                 if (aborted)
2236                         set_bit(SCAN_ABORTED, &local->scanning);
2237                 wiphy_delayed_work_queue(local->hw.wiphy, &local->scan_work, 0);
2238                 wiphy_delayed_work_flush(local->hw.wiphy, &local->scan_work);
2239         }
2240 }
2241
2242 static void ieee80211_handle_reconfig_failure(struct ieee80211_local *local)
2243 {
2244         struct ieee80211_sub_if_data *sdata;
2245         struct ieee80211_chanctx *ctx;
2246
2247         /*
2248          * We get here if during resume the device can't be restarted properly.
2249          * We might also get here if this happens during HW reset, which is a
2250          * slightly different situation and we need to drop all connections in
2251          * the latter case.
2252          *
2253          * Ask cfg80211 to turn off all interfaces, this will result in more
2254          * warnings but at least we'll then get into a clean stopped state.
2255          */
2256
2257         local->resuming = false;
2258         local->suspended = false;
2259         local->in_reconfig = false;
2260
2261         ieee80211_flush_completed_scan(local, true);
2262
2263         /* scheduled scan clearly can't be running any more, but tell
2264          * cfg80211 and clear local state
2265          */
2266         ieee80211_sched_scan_end(local);
2267
2268         list_for_each_entry(sdata, &local->interfaces, list)
2269                 sdata->flags &= ~IEEE80211_SDATA_IN_DRIVER;
2270
2271         /* Mark channel contexts as not being in the driver any more to avoid
2272          * removing them from the driver during the shutdown process...
2273          */
2274         mutex_lock(&local->chanctx_mtx);
2275         list_for_each_entry(ctx, &local->chanctx_list, list)
2276                 ctx->driver_present = false;
2277         mutex_unlock(&local->chanctx_mtx);
2278 }
2279
2280 static void ieee80211_assign_chanctx(struct ieee80211_local *local,
2281                                      struct ieee80211_sub_if_data *sdata,
2282                                      struct ieee80211_link_data *link)
2283 {
2284         struct ieee80211_chanctx_conf *conf;
2285         struct ieee80211_chanctx *ctx;
2286
2287         if (!local->use_chanctx)
2288                 return;
2289
2290         mutex_lock(&local->chanctx_mtx);
2291         conf = rcu_dereference_protected(link->conf->chanctx_conf,
2292                                          lockdep_is_held(&local->chanctx_mtx));
2293         if (conf) {
2294                 ctx = container_of(conf, struct ieee80211_chanctx, conf);
2295                 drv_assign_vif_chanctx(local, sdata, link->conf, ctx);
2296         }
2297         mutex_unlock(&local->chanctx_mtx);
2298 }
2299
2300 static void ieee80211_reconfig_stations(struct ieee80211_sub_if_data *sdata)
2301 {
2302         struct ieee80211_local *local = sdata->local;
2303         struct sta_info *sta;
2304
2305         /* add STAs back */
2306         mutex_lock(&local->sta_mtx);
2307         list_for_each_entry(sta, &local->sta_list, list) {
2308                 enum ieee80211_sta_state state;
2309
2310                 if (!sta->uploaded || sta->sdata != sdata)
2311                         continue;
2312
2313                 for (state = IEEE80211_STA_NOTEXIST;
2314                      state < sta->sta_state; state++)
2315                         WARN_ON(drv_sta_state(local, sta->sdata, sta, state,
2316                                               state + 1));
2317         }
2318         mutex_unlock(&local->sta_mtx);
2319 }
2320
2321 static int ieee80211_reconfig_nan(struct ieee80211_sub_if_data *sdata)
2322 {
2323         struct cfg80211_nan_func *func, **funcs;
2324         int res, id, i = 0;
2325
2326         res = drv_start_nan(sdata->local, sdata,
2327                             &sdata->u.nan.conf);
2328         if (WARN_ON(res))
2329                 return res;
2330
2331         funcs = kcalloc(sdata->local->hw.max_nan_de_entries + 1,
2332                         sizeof(*funcs),
2333                         GFP_KERNEL);
2334         if (!funcs)
2335                 return -ENOMEM;
2336
2337         /* Add all the functions:
2338          * This is a little bit ugly. We need to call a potentially sleeping
2339          * callback for each NAN function, so we can't hold the spinlock.
2340          */
2341         spin_lock_bh(&sdata->u.nan.func_lock);
2342
2343         idr_for_each_entry(&sdata->u.nan.function_inst_ids, func, id)
2344                 funcs[i++] = func;
2345
2346         spin_unlock_bh(&sdata->u.nan.func_lock);
2347
2348         for (i = 0; funcs[i]; i++) {
2349                 res = drv_add_nan_func(sdata->local, sdata, funcs[i]);
2350                 if (WARN_ON(res))
2351                         ieee80211_nan_func_terminated(&sdata->vif,
2352                                                       funcs[i]->instance_id,
2353                                                       NL80211_NAN_FUNC_TERM_REASON_ERROR,
2354                                                       GFP_KERNEL);
2355         }
2356
2357         kfree(funcs);
2358
2359         return 0;
2360 }
2361
2362 int ieee80211_reconfig(struct ieee80211_local *local)
2363 {
2364         struct ieee80211_hw *hw = &local->hw;
2365         struct ieee80211_sub_if_data *sdata;
2366         struct ieee80211_chanctx *ctx;
2367         struct sta_info *sta;
2368         int res, i;
2369         bool reconfig_due_to_wowlan = false;
2370         struct ieee80211_sub_if_data *sched_scan_sdata;
2371         struct cfg80211_sched_scan_request *sched_scan_req;
2372         bool sched_scan_stopped = false;
2373         bool suspended = local->suspended;
2374         bool in_reconfig = false;
2375
2376         /* nothing to do if HW shouldn't run */
2377         if (!local->open_count)
2378                 goto wake_up;
2379
2380 #ifdef CONFIG_PM
2381         if (suspended)
2382                 local->resuming = true;
2383
2384         if (local->wowlan) {
2385                 /*
2386                  * In the wowlan case, both mac80211 and the device
2387                  * are functional when the resume op is called, so
2388                  * clear local->suspended so the device could operate
2389                  * normally (e.g. pass rx frames).
2390                  */
2391                 local->suspended = false;
2392                 res = drv_resume(local);
2393                 local->wowlan = false;
2394                 if (res < 0) {
2395                         local->resuming = false;
2396                         return res;
2397                 }
2398                 if (res == 0)
2399                         goto wake_up;
2400                 WARN_ON(res > 1);
2401                 /*
2402                  * res is 1, which means the driver requested
2403                  * to go through a regular reset on wakeup.
2404                  * restore local->suspended in this case.
2405                  */
2406                 reconfig_due_to_wowlan = true;
2407                 local->suspended = true;
2408         }
2409 #endif
2410
2411         /*
2412          * In case of hw_restart during suspend (without wowlan),
2413          * cancel restart work, as we are reconfiguring the device
2414          * anyway.
2415          * Note that restart_work is scheduled on a frozen workqueue,
2416          * so we can't deadlock in this case.
2417          */
2418         if (suspended && local->in_reconfig && !reconfig_due_to_wowlan)
2419                 cancel_work_sync(&local->restart_work);
2420
2421         local->started = false;
2422
2423         /*
2424          * Upon resume hardware can sometimes be goofy due to
2425          * various platform / driver / bus issues, so restarting
2426          * the device may at times not work immediately. Propagate
2427          * the error.
2428          */
2429         res = drv_start(local);
2430         if (res) {
2431                 if (suspended)
2432                         WARN(1, "Hardware became unavailable upon resume. This could be a software issue prior to suspend or a hardware issue.\n");
2433                 else
2434                         WARN(1, "Hardware became unavailable during restart.\n");
2435                 ieee80211_handle_reconfig_failure(local);
2436                 return res;
2437         }
2438
2439         /* setup fragmentation threshold */
2440         drv_set_frag_threshold(local, hw->wiphy->frag_threshold);
2441
2442         /* setup RTS threshold */
2443         drv_set_rts_threshold(local, hw->wiphy->rts_threshold);
2444
2445         /* reset coverage class */
2446         drv_set_coverage_class(local, hw->wiphy->coverage_class);
2447
2448         ieee80211_led_radio(local, true);
2449         ieee80211_mod_tpt_led_trig(local,
2450                                    IEEE80211_TPT_LEDTRIG_FL_RADIO, 0);
2451
2452         /* add interfaces */
2453         sdata = wiphy_dereference(local->hw.wiphy, local->monitor_sdata);
2454         if (sdata) {
2455                 /* in HW restart it exists already */
2456                 WARN_ON(local->resuming);
2457                 res = drv_add_interface(local, sdata);
2458                 if (WARN_ON(res)) {
2459                         RCU_INIT_POINTER(local->monitor_sdata, NULL);
2460                         synchronize_net();
2461                         kfree(sdata);
2462                 }
2463         }
2464
2465         list_for_each_entry(sdata, &local->interfaces, list) {
2466                 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
2467                     sdata->vif.type != NL80211_IFTYPE_MONITOR &&
2468                     ieee80211_sdata_running(sdata)) {
2469                         res = drv_add_interface(local, sdata);
2470                         if (WARN_ON(res))
2471                                 break;
2472                 }
2473         }
2474
2475         /* If adding any of the interfaces failed above, roll back and
2476          * report failure.
2477          */
2478         if (res) {
2479                 list_for_each_entry_continue_reverse(sdata, &local->interfaces,
2480                                                      list)
2481                         if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
2482                             sdata->vif.type != NL80211_IFTYPE_MONITOR &&
2483                             ieee80211_sdata_running(sdata))
2484                                 drv_remove_interface(local, sdata);
2485                 ieee80211_handle_reconfig_failure(local);
2486                 return res;
2487         }
2488
2489         /* add channel contexts */
2490         if (local->use_chanctx) {
2491                 mutex_lock(&local->chanctx_mtx);
2492                 list_for_each_entry(ctx, &local->chanctx_list, list)
2493                         if (ctx->replace_state !=
2494                             IEEE80211_CHANCTX_REPLACES_OTHER)
2495                                 WARN_ON(drv_add_chanctx(local, ctx));
2496                 mutex_unlock(&local->chanctx_mtx);
2497
2498                 sdata = wiphy_dereference(local->hw.wiphy,
2499                                           local->monitor_sdata);
2500                 if (sdata && ieee80211_sdata_running(sdata))
2501                         ieee80211_assign_chanctx(local, sdata, &sdata->deflink);
2502         }
2503
2504         /* reconfigure hardware */
2505         ieee80211_hw_config(local, ~0);
2506
2507         ieee80211_configure_filter(local);
2508
2509         /* Finally also reconfigure all the BSS information */
2510         list_for_each_entry(sdata, &local->interfaces, list) {
2511                 unsigned int link_id;
2512                 u32 changed;
2513
2514                 if (!ieee80211_sdata_running(sdata))
2515                         continue;
2516
2517                 sdata_lock(sdata);
2518                 for (link_id = 0;
2519                      link_id < ARRAY_SIZE(sdata->vif.link_conf);
2520                      link_id++) {
2521                         struct ieee80211_link_data *link;
2522
2523                         link = sdata_dereference(sdata->link[link_id], sdata);
2524                         if (link)
2525                                 ieee80211_assign_chanctx(local, sdata, link);
2526                 }
2527
2528                 switch (sdata->vif.type) {
2529                 case NL80211_IFTYPE_AP_VLAN:
2530                 case NL80211_IFTYPE_MONITOR:
2531                         break;
2532                 case NL80211_IFTYPE_ADHOC:
2533                         if (sdata->vif.cfg.ibss_joined)
2534                                 WARN_ON(drv_join_ibss(local, sdata));
2535                         fallthrough;
2536                 default:
2537                         ieee80211_reconfig_stations(sdata);
2538                         fallthrough;
2539                 case NL80211_IFTYPE_AP: /* AP stations are handled later */
2540                         for (i = 0; i < IEEE80211_NUM_ACS; i++)
2541                                 drv_conf_tx(local, &sdata->deflink, i,
2542                                             &sdata->deflink.tx_conf[i]);
2543                         break;
2544                 }
2545                 sdata_unlock(sdata);
2546
2547                 /* common change flags for all interface types */
2548                 changed = BSS_CHANGED_ERP_CTS_PROT |
2549                           BSS_CHANGED_ERP_PREAMBLE |
2550                           BSS_CHANGED_ERP_SLOT |
2551                           BSS_CHANGED_HT |
2552                           BSS_CHANGED_BASIC_RATES |
2553                           BSS_CHANGED_BEACON_INT |
2554                           BSS_CHANGED_BSSID |
2555                           BSS_CHANGED_CQM |
2556                           BSS_CHANGED_QOS |
2557                           BSS_CHANGED_IDLE |
2558                           BSS_CHANGED_TXPOWER |
2559                           BSS_CHANGED_MCAST_RATE;
2560
2561                 if (sdata->vif.bss_conf.mu_mimo_owner)
2562                         changed |= BSS_CHANGED_MU_GROUPS;
2563
2564                 switch (sdata->vif.type) {
2565                 case NL80211_IFTYPE_STATION:
2566                         changed |= BSS_CHANGED_ASSOC |
2567                                    BSS_CHANGED_ARP_FILTER |
2568                                    BSS_CHANGED_PS;
2569
2570                         /* Re-send beacon info report to the driver */
2571                         if (sdata->deflink.u.mgd.have_beacon)
2572                                 changed |= BSS_CHANGED_BEACON_INFO;
2573
2574                         if (sdata->vif.bss_conf.max_idle_period ||
2575                             sdata->vif.bss_conf.protected_keep_alive)
2576                                 changed |= BSS_CHANGED_KEEP_ALIVE;
2577
2578                         sdata_lock(sdata);
2579                         ieee80211_bss_info_change_notify(sdata, changed);
2580                         sdata_unlock(sdata);
2581                         break;
2582                 case NL80211_IFTYPE_OCB:
2583                         changed |= BSS_CHANGED_OCB;
2584                         ieee80211_bss_info_change_notify(sdata, changed);
2585                         break;
2586                 case NL80211_IFTYPE_ADHOC:
2587                         changed |= BSS_CHANGED_IBSS;
2588                         fallthrough;
2589                 case NL80211_IFTYPE_AP:
2590                         changed |= BSS_CHANGED_SSID | BSS_CHANGED_P2P_PS;
2591
2592                         if (sdata->vif.bss_conf.ftm_responder == 1 &&
2593                             wiphy_ext_feature_isset(sdata->local->hw.wiphy,
2594                                         NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER))
2595                                 changed |= BSS_CHANGED_FTM_RESPONDER;
2596
2597                         if (sdata->vif.type == NL80211_IFTYPE_AP) {
2598                                 changed |= BSS_CHANGED_AP_PROBE_RESP;
2599
2600                                 if (rcu_access_pointer(sdata->deflink.u.ap.beacon))
2601                                         drv_start_ap(local, sdata,
2602                                                      sdata->deflink.conf);
2603                         }
2604                         fallthrough;
2605                 case NL80211_IFTYPE_MESH_POINT:
2606                         if (sdata->vif.bss_conf.enable_beacon) {
2607                                 changed |= BSS_CHANGED_BEACON |
2608                                            BSS_CHANGED_BEACON_ENABLED;
2609                                 ieee80211_bss_info_change_notify(sdata, changed);
2610                         }
2611                         break;
2612                 case NL80211_IFTYPE_NAN:
2613                         res = ieee80211_reconfig_nan(sdata);
2614                         if (res < 0) {
2615                                 ieee80211_handle_reconfig_failure(local);
2616                                 return res;
2617                         }
2618                         break;
2619                 case NL80211_IFTYPE_AP_VLAN:
2620                 case NL80211_IFTYPE_MONITOR:
2621                 case NL80211_IFTYPE_P2P_DEVICE:
2622                         /* nothing to do */
2623                         break;
2624                 case NL80211_IFTYPE_UNSPECIFIED:
2625                 case NUM_NL80211_IFTYPES:
2626                 case NL80211_IFTYPE_P2P_CLIENT:
2627                 case NL80211_IFTYPE_P2P_GO:
2628                 case NL80211_IFTYPE_WDS:
2629                         WARN_ON(1);
2630                         break;
2631                 }
2632         }
2633
2634         ieee80211_recalc_ps(local);
2635
2636         /*
2637          * The sta might be in psm against the ap (e.g. because
2638          * this was the state before a hw restart), so we
2639          * explicitly send a null packet in order to make sure
2640          * it'll sync against the ap (and get out of psm).
2641          */
2642         if (!(local->hw.conf.flags & IEEE80211_CONF_PS)) {
2643                 list_for_each_entry(sdata, &local->interfaces, list) {
2644                         if (sdata->vif.type != NL80211_IFTYPE_STATION)
2645                                 continue;
2646                         if (!sdata->u.mgd.associated)
2647                                 continue;
2648
2649                         ieee80211_send_nullfunc(local, sdata, false);
2650                 }
2651         }
2652
2653         /* APs are now beaconing, add back stations */
2654         list_for_each_entry(sdata, &local->interfaces, list) {
2655                 if (!ieee80211_sdata_running(sdata))
2656                         continue;
2657
2658                 sdata_lock(sdata);
2659                 switch (sdata->vif.type) {
2660                 case NL80211_IFTYPE_AP_VLAN:
2661                 case NL80211_IFTYPE_AP:
2662                         ieee80211_reconfig_stations(sdata);
2663                         break;
2664                 default:
2665                         break;
2666                 }
2667                 sdata_unlock(sdata);
2668         }
2669
2670         /* add back keys */
2671         list_for_each_entry(sdata, &local->interfaces, list)
2672                 ieee80211_reenable_keys(sdata);
2673
2674         /* Reconfigure sched scan if it was interrupted by FW restart */
2675         mutex_lock(&local->mtx);
2676         sched_scan_sdata = rcu_dereference_protected(local->sched_scan_sdata,
2677                                                 lockdep_is_held(&local->mtx));
2678         sched_scan_req = rcu_dereference_protected(local->sched_scan_req,
2679                                                 lockdep_is_held(&local->mtx));
2680         if (sched_scan_sdata && sched_scan_req)
2681                 /*
2682                  * Sched scan stopped, but we don't want to report it. Instead,
2683                  * we're trying to reschedule. However, if more than one scan
2684                  * plan was set, we cannot reschedule since we don't know which
2685                  * scan plan was currently running (and some scan plans may have
2686                  * already finished).
2687                  */
2688                 if (sched_scan_req->n_scan_plans > 1 ||
2689                     __ieee80211_request_sched_scan_start(sched_scan_sdata,
2690                                                          sched_scan_req)) {
2691                         RCU_INIT_POINTER(local->sched_scan_sdata, NULL);
2692                         RCU_INIT_POINTER(local->sched_scan_req, NULL);
2693                         sched_scan_stopped = true;
2694                 }
2695         mutex_unlock(&local->mtx);
2696
2697         if (sched_scan_stopped)
2698                 cfg80211_sched_scan_stopped_locked(local->hw.wiphy, 0);
2699
2700  wake_up:
2701
2702         if (local->monitors == local->open_count && local->monitors > 0)
2703                 ieee80211_add_virtual_monitor(local);
2704
2705         /*
2706          * Clear the WLAN_STA_BLOCK_BA flag so new aggregation
2707          * sessions can be established after a resume.
2708          *
2709          * Also tear down aggregation sessions since reconfiguring
2710          * them in a hardware restart scenario is not easily done
2711          * right now, and the hardware will have lost information
2712          * about the sessions, but we and the AP still think they
2713          * are active. This is really a workaround though.
2714          */
2715         if (ieee80211_hw_check(hw, AMPDU_AGGREGATION)) {
2716                 mutex_lock(&local->sta_mtx);
2717
2718                 list_for_each_entry(sta, &local->sta_list, list) {
2719                         if (!local->resuming)
2720                                 ieee80211_sta_tear_down_BA_sessions(
2721                                                 sta, AGG_STOP_LOCAL_REQUEST);
2722                         clear_sta_flag(sta, WLAN_STA_BLOCK_BA);
2723                 }
2724
2725                 mutex_unlock(&local->sta_mtx);
2726         }
2727
2728         /*
2729          * If this is for hw restart things are still running.
2730          * We may want to change that later, however.
2731          */
2732         if (local->open_count && (!suspended || reconfig_due_to_wowlan))
2733                 drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_RESTART);
2734
2735         if (local->in_reconfig) {
2736                 in_reconfig = local->in_reconfig;
2737                 local->in_reconfig = false;
2738                 barrier();
2739
2740                 /* Restart deferred ROCs */
2741                 mutex_lock(&local->mtx);
2742                 ieee80211_start_next_roc(local);
2743                 mutex_unlock(&local->mtx);
2744
2745                 /* Requeue all works */
2746                 list_for_each_entry(sdata, &local->interfaces, list)
2747                         ieee80211_queue_work(&local->hw, &sdata->work);
2748         }
2749
2750         ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
2751                                         IEEE80211_QUEUE_STOP_REASON_SUSPEND,
2752                                         false);
2753
2754         if (in_reconfig) {
2755                 list_for_each_entry(sdata, &local->interfaces, list) {
2756                         if (!ieee80211_sdata_running(sdata))
2757                                 continue;
2758                         if (sdata->vif.type == NL80211_IFTYPE_STATION)
2759                                 ieee80211_sta_restart(sdata);
2760                 }
2761         }
2762
2763         if (!suspended)
2764                 return 0;
2765
2766 #ifdef CONFIG_PM
2767         /* first set suspended false, then resuming */
2768         local->suspended = false;
2769         mb();
2770         local->resuming = false;
2771
2772         ieee80211_flush_completed_scan(local, false);
2773
2774         if (local->open_count && !reconfig_due_to_wowlan)
2775                 drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_SUSPEND);
2776
2777         list_for_each_entry(sdata, &local->interfaces, list) {
2778                 if (!ieee80211_sdata_running(sdata))
2779                         continue;
2780                 if (sdata->vif.type == NL80211_IFTYPE_STATION)
2781                         ieee80211_sta_restart(sdata);
2782         }
2783
2784         mod_timer(&local->sta_cleanup, jiffies + 1);
2785 #else
2786         WARN_ON(1);
2787 #endif
2788
2789         return 0;
2790 }
2791
2792 static void ieee80211_reconfig_disconnect(struct ieee80211_vif *vif, u8 flag)
2793 {
2794         struct ieee80211_sub_if_data *sdata;
2795         struct ieee80211_local *local;
2796         struct ieee80211_key *key;
2797
2798         if (WARN_ON(!vif))
2799                 return;
2800
2801         sdata = vif_to_sdata(vif);
2802         local = sdata->local;
2803
2804         if (WARN_ON(flag & IEEE80211_SDATA_DISCONNECT_RESUME &&
2805                     !local->resuming))
2806                 return;
2807
2808         if (WARN_ON(flag & IEEE80211_SDATA_DISCONNECT_HW_RESTART &&
2809                     !local->in_reconfig))
2810                 return;
2811
2812         if (WARN_ON(vif->type != NL80211_IFTYPE_STATION))
2813                 return;
2814
2815         sdata->flags |= flag;
2816
2817         mutex_lock(&local->key_mtx);
2818         list_for_each_entry(key, &sdata->key_list, list)
2819                 key->flags |= KEY_FLAG_TAINTED;
2820         mutex_unlock(&local->key_mtx);
2821 }
2822
2823 void ieee80211_hw_restart_disconnect(struct ieee80211_vif *vif)
2824 {
2825         ieee80211_reconfig_disconnect(vif, IEEE80211_SDATA_DISCONNECT_HW_RESTART);
2826 }
2827 EXPORT_SYMBOL_GPL(ieee80211_hw_restart_disconnect);
2828
2829 void ieee80211_resume_disconnect(struct ieee80211_vif *vif)
2830 {
2831         ieee80211_reconfig_disconnect(vif, IEEE80211_SDATA_DISCONNECT_RESUME);
2832 }
2833 EXPORT_SYMBOL_GPL(ieee80211_resume_disconnect);
2834
2835 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata,
2836                            struct ieee80211_link_data *link)
2837 {
2838         struct ieee80211_local *local = sdata->local;
2839         struct ieee80211_chanctx_conf *chanctx_conf;
2840         struct ieee80211_chanctx *chanctx;
2841
2842         mutex_lock(&local->chanctx_mtx);
2843
2844         chanctx_conf = rcu_dereference_protected(link->conf->chanctx_conf,
2845                                                  lockdep_is_held(&local->chanctx_mtx));
2846
2847         /*
2848          * This function can be called from a work, thus it may be possible
2849          * that the chanctx_conf is removed (due to a disconnection, for
2850          * example).
2851          * So nothing should be done in such case.
2852          */
2853         if (!chanctx_conf)
2854                 goto unlock;
2855
2856         chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf);
2857         ieee80211_recalc_smps_chanctx(local, chanctx);
2858  unlock:
2859         mutex_unlock(&local->chanctx_mtx);
2860 }
2861
2862 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata,
2863                                   int link_id)
2864 {
2865         struct ieee80211_local *local = sdata->local;
2866         struct ieee80211_chanctx_conf *chanctx_conf;
2867         struct ieee80211_chanctx *chanctx;
2868         int i;
2869
2870         mutex_lock(&local->chanctx_mtx);
2871
2872         for (i = 0; i < ARRAY_SIZE(sdata->vif.link_conf); i++) {
2873                 struct ieee80211_bss_conf *bss_conf;
2874
2875                 if (link_id >= 0 && link_id != i)
2876                         continue;
2877
2878                 rcu_read_lock();
2879                 bss_conf = rcu_dereference(sdata->vif.link_conf[i]);
2880                 if (!bss_conf) {
2881                         rcu_read_unlock();
2882                         continue;
2883                 }
2884
2885                 chanctx_conf = rcu_dereference_protected(bss_conf->chanctx_conf,
2886                                                          lockdep_is_held(&local->chanctx_mtx));
2887                 /*
2888                  * Since we hold the chanctx_mtx (checked above)
2889                  * we can take the chanctx_conf pointer out of the
2890                  * RCU critical section, it cannot go away without
2891                  * the mutex. Just the way we reached it could - in
2892                  * theory - go away, but we don't really care and
2893                  * it really shouldn't happen anyway.
2894                  */
2895                 rcu_read_unlock();
2896
2897                 if (!chanctx_conf)
2898                         goto unlock;
2899
2900                 chanctx = container_of(chanctx_conf, struct ieee80211_chanctx,
2901                                        conf);
2902                 ieee80211_recalc_chanctx_min_def(local, chanctx, NULL);
2903         }
2904  unlock:
2905         mutex_unlock(&local->chanctx_mtx);
2906 }
2907
2908 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset)
2909 {
2910         size_t pos = offset;
2911
2912         while (pos < ielen && ies[pos] != WLAN_EID_VENDOR_SPECIFIC)
2913                 pos += 2 + ies[pos + 1];
2914
2915         return pos;
2916 }
2917
2918 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
2919                               u16 cap)
2920 {
2921         __le16 tmp;
2922
2923         *pos++ = WLAN_EID_HT_CAPABILITY;
2924         *pos++ = sizeof(struct ieee80211_ht_cap);
2925         memset(pos, 0, sizeof(struct ieee80211_ht_cap));
2926
2927         /* capability flags */
2928         tmp = cpu_to_le16(cap);
2929         memcpy(pos, &tmp, sizeof(u16));
2930         pos += sizeof(u16);
2931
2932         /* AMPDU parameters */
2933         *pos++ = ht_cap->ampdu_factor |
2934                  (ht_cap->ampdu_density <<
2935                         IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT);
2936
2937         /* MCS set */
2938         memcpy(pos, &ht_cap->mcs, sizeof(ht_cap->mcs));
2939         pos += sizeof(ht_cap->mcs);
2940
2941         /* extended capabilities */
2942         pos += sizeof(__le16);
2943
2944         /* BF capabilities */
2945         pos += sizeof(__le32);
2946
2947         /* antenna selection */
2948         pos += sizeof(u8);
2949
2950         return pos;
2951 }
2952
2953 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
2954                                u32 cap)
2955 {
2956         __le32 tmp;
2957
2958         *pos++ = WLAN_EID_VHT_CAPABILITY;
2959         *pos++ = sizeof(struct ieee80211_vht_cap);
2960         memset(pos, 0, sizeof(struct ieee80211_vht_cap));
2961
2962         /* capability flags */
2963         tmp = cpu_to_le32(cap);
2964         memcpy(pos, &tmp, sizeof(u32));
2965         pos += sizeof(u32);
2966
2967         /* VHT MCS set */
2968         memcpy(pos, &vht_cap->vht_mcs, sizeof(vht_cap->vht_mcs));
2969         pos += sizeof(vht_cap->vht_mcs);
2970
2971         return pos;
2972 }
2973
2974 u8 ieee80211_ie_len_he_cap(struct ieee80211_sub_if_data *sdata, u8 iftype)
2975 {
2976         const struct ieee80211_sta_he_cap *he_cap;
2977         struct ieee80211_supported_band *sband;
2978         u8 n;
2979
2980         sband = ieee80211_get_sband(sdata);
2981         if (!sband)
2982                 return 0;
2983
2984         he_cap = ieee80211_get_he_iftype_cap(sband, iftype);
2985         if (!he_cap)
2986                 return 0;
2987
2988         n = ieee80211_he_mcs_nss_size(&he_cap->he_cap_elem);
2989         return 2 + 1 +
2990                sizeof(he_cap->he_cap_elem) + n +
2991                ieee80211_he_ppe_size(he_cap->ppe_thres[0],
2992                                      he_cap->he_cap_elem.phy_cap_info);
2993 }
2994
2995 u8 *ieee80211_ie_build_he_cap(ieee80211_conn_flags_t disable_flags, u8 *pos,
2996                               const struct ieee80211_sta_he_cap *he_cap,
2997                               u8 *end)
2998 {
2999         struct ieee80211_he_cap_elem elem;
3000         u8 n;
3001         u8 ie_len;
3002         u8 *orig_pos = pos;
3003
3004         /* Make sure we have place for the IE */
3005         /*
3006          * TODO: the 1 added is because this temporarily is under the EXTENSION
3007          * IE. Get rid of it when it moves.
3008          */
3009         if (!he_cap)
3010                 return orig_pos;
3011
3012         /* modify on stack first to calculate 'n' and 'ie_len' correctly */
3013         elem = he_cap->he_cap_elem;
3014
3015         if (disable_flags & IEEE80211_CONN_DISABLE_40MHZ)
3016                 elem.phy_cap_info[0] &=
3017                         ~(IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G |
3018                           IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_IN_2G);
3019
3020         if (disable_flags & IEEE80211_CONN_DISABLE_160MHZ)
3021                 elem.phy_cap_info[0] &=
3022                         ~IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G;
3023
3024         if (disable_flags & IEEE80211_CONN_DISABLE_80P80MHZ)
3025                 elem.phy_cap_info[0] &=
3026                         ~IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G;
3027
3028         n = ieee80211_he_mcs_nss_size(&elem);
3029         ie_len = 2 + 1 +
3030                  sizeof(he_cap->he_cap_elem) + n +
3031                  ieee80211_he_ppe_size(he_cap->ppe_thres[0],
3032                                        he_cap->he_cap_elem.phy_cap_info);
3033
3034         if ((end - pos) < ie_len)
3035                 return orig_pos;
3036
3037         *pos++ = WLAN_EID_EXTENSION;
3038         pos++; /* We'll set the size later below */
3039         *pos++ = WLAN_EID_EXT_HE_CAPABILITY;
3040
3041         /* Fixed data */
3042         memcpy(pos, &elem, sizeof(elem));
3043         pos += sizeof(elem);
3044
3045         memcpy(pos, &he_cap->he_mcs_nss_supp, n);
3046         pos += n;
3047
3048         /* Check if PPE Threshold should be present */
3049         if ((he_cap->he_cap_elem.phy_cap_info[6] &
3050              IEEE80211_HE_PHY_CAP6_PPE_THRESHOLD_PRESENT) == 0)
3051                 goto end;
3052
3053         /*
3054          * Calculate how many PPET16/PPET8 pairs are to come. Algorithm:
3055          * (NSS_M1 + 1) x (num of 1 bits in RU_INDEX_BITMASK)
3056          */
3057         n = hweight8(he_cap->ppe_thres[0] &
3058                      IEEE80211_PPE_THRES_RU_INDEX_BITMASK_MASK);
3059         n *= (1 + ((he_cap->ppe_thres[0] & IEEE80211_PPE_THRES_NSS_MASK) >>
3060                    IEEE80211_PPE_THRES_NSS_POS));
3061
3062         /*
3063          * Each pair is 6 bits, and we need to add the 7 "header" bits to the
3064          * total size.
3065          */
3066         n = (n * IEEE80211_PPE_THRES_INFO_PPET_SIZE * 2) + 7;
3067         n = DIV_ROUND_UP(n, 8);
3068
3069         /* Copy PPE Thresholds */
3070         memcpy(pos, &he_cap->ppe_thres, n);
3071         pos += n;
3072
3073 end:
3074         orig_pos[1] = (pos - orig_pos) - 2;
3075         return pos;
3076 }
3077
3078 void ieee80211_ie_build_he_6ghz_cap(struct ieee80211_sub_if_data *sdata,
3079                                     enum ieee80211_smps_mode smps_mode,
3080                                     struct sk_buff *skb)
3081 {
3082         struct ieee80211_supported_band *sband;
3083         const struct ieee80211_sband_iftype_data *iftd;
3084         enum nl80211_iftype iftype = ieee80211_vif_type_p2p(&sdata->vif);
3085         u8 *pos;
3086         u16 cap;
3087
3088         if (!cfg80211_any_usable_channels(sdata->local->hw.wiphy,
3089                                           BIT(NL80211_BAND_6GHZ),
3090                                           IEEE80211_CHAN_NO_HE))
3091                 return;
3092
3093         sband = sdata->local->hw.wiphy->bands[NL80211_BAND_6GHZ];
3094
3095         iftd = ieee80211_get_sband_iftype_data(sband, iftype);
3096         if (!iftd)
3097                 return;
3098
3099         /* Check for device HE 6 GHz capability before adding element */
3100         if (!iftd->he_6ghz_capa.capa)
3101                 return;
3102
3103         cap = le16_to_cpu(iftd->he_6ghz_capa.capa);
3104         cap &= ~IEEE80211_HE_6GHZ_CAP_SM_PS;
3105
3106         switch (smps_mode) {
3107         case IEEE80211_SMPS_AUTOMATIC:
3108         case IEEE80211_SMPS_NUM_MODES:
3109                 WARN_ON(1);
3110                 fallthrough;
3111         case IEEE80211_SMPS_OFF:
3112                 cap |= u16_encode_bits(WLAN_HT_CAP_SM_PS_DISABLED,
3113                                        IEEE80211_HE_6GHZ_CAP_SM_PS);
3114                 break;
3115         case IEEE80211_SMPS_STATIC:
3116                 cap |= u16_encode_bits(WLAN_HT_CAP_SM_PS_STATIC,
3117                                        IEEE80211_HE_6GHZ_CAP_SM_PS);
3118                 break;
3119         case IEEE80211_SMPS_DYNAMIC:
3120                 cap |= u16_encode_bits(WLAN_HT_CAP_SM_PS_DYNAMIC,
3121                                        IEEE80211_HE_6GHZ_CAP_SM_PS);
3122                 break;
3123         }
3124
3125         pos = skb_put(skb, 2 + 1 + sizeof(cap));
3126         ieee80211_write_he_6ghz_cap(pos, cpu_to_le16(cap),
3127                                     pos + 2 + 1 + sizeof(cap));
3128 }
3129
3130 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
3131                                const struct cfg80211_chan_def *chandef,
3132                                u16 prot_mode, bool rifs_mode)
3133 {
3134         struct ieee80211_ht_operation *ht_oper;
3135         /* Build HT Information */
3136         *pos++ = WLAN_EID_HT_OPERATION;
3137         *pos++ = sizeof(struct ieee80211_ht_operation);
3138         ht_oper = (struct ieee80211_ht_operation *)pos;
3139         ht_oper->primary_chan = ieee80211_frequency_to_channel(
3140                                         chandef->chan->center_freq);
3141         switch (chandef->width) {
3142         case NL80211_CHAN_WIDTH_160:
3143         case NL80211_CHAN_WIDTH_80P80:
3144         case NL80211_CHAN_WIDTH_80:
3145         case NL80211_CHAN_WIDTH_40:
3146                 if (chandef->center_freq1 > chandef->chan->center_freq)
3147                         ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
3148                 else
3149                         ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
3150                 break;
3151         case NL80211_CHAN_WIDTH_320:
3152                 /* HT information element should not be included on 6GHz */
3153                 WARN_ON(1);
3154                 return pos;
3155         default:
3156                 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_NONE;
3157                 break;
3158         }
3159         if (ht_cap->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 &&
3160             chandef->width != NL80211_CHAN_WIDTH_20_NOHT &&
3161             chandef->width != NL80211_CHAN_WIDTH_20)
3162                 ht_oper->ht_param |= IEEE80211_HT_PARAM_CHAN_WIDTH_ANY;
3163
3164         if (rifs_mode)
3165                 ht_oper->ht_param |= IEEE80211_HT_PARAM_RIFS_MODE;
3166
3167         ht_oper->operation_mode = cpu_to_le16(prot_mode);
3168         ht_oper->stbc_param = 0x0000;
3169
3170         /* It seems that Basic MCS set and Supported MCS set
3171            are identical for the first 10 bytes */
3172         memset(&ht_oper->basic_set, 0, 16);
3173         memcpy(&ht_oper->basic_set, &ht_cap->mcs, 10);
3174
3175         return pos + sizeof(struct ieee80211_ht_operation);
3176 }
3177
3178 void ieee80211_ie_build_wide_bw_cs(u8 *pos,
3179                                    const struct cfg80211_chan_def *chandef)
3180 {
3181         *pos++ = WLAN_EID_WIDE_BW_CHANNEL_SWITCH;       /* EID */
3182         *pos++ = 3;                                     /* IE length */
3183         /* New channel width */
3184         switch (chandef->width) {
3185         case NL80211_CHAN_WIDTH_80:
3186                 *pos++ = IEEE80211_VHT_CHANWIDTH_80MHZ;
3187                 break;
3188         case NL80211_CHAN_WIDTH_160:
3189                 *pos++ = IEEE80211_VHT_CHANWIDTH_160MHZ;
3190                 break;
3191         case NL80211_CHAN_WIDTH_80P80:
3192                 *pos++ = IEEE80211_VHT_CHANWIDTH_80P80MHZ;
3193                 break;
3194         case NL80211_CHAN_WIDTH_320:
3195                 /* The behavior is not defined for 320 MHz channels */
3196                 WARN_ON(1);
3197                 fallthrough;
3198         default:
3199                 *pos++ = IEEE80211_VHT_CHANWIDTH_USE_HT;
3200         }
3201
3202         /* new center frequency segment 0 */
3203         *pos++ = ieee80211_frequency_to_channel(chandef->center_freq1);
3204         /* new center frequency segment 1 */
3205         if (chandef->center_freq2)
3206                 *pos++ = ieee80211_frequency_to_channel(chandef->center_freq2);
3207         else
3208                 *pos++ = 0;
3209 }
3210
3211 u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
3212                                 const struct cfg80211_chan_def *chandef)
3213 {
3214         struct ieee80211_vht_operation *vht_oper;
3215
3216         *pos++ = WLAN_EID_VHT_OPERATION;
3217         *pos++ = sizeof(struct ieee80211_vht_operation);
3218         vht_oper = (struct ieee80211_vht_operation *)pos;
3219         vht_oper->center_freq_seg0_idx = ieee80211_frequency_to_channel(
3220                                                         chandef->center_freq1);
3221         if (chandef->center_freq2)
3222                 vht_oper->center_freq_seg1_idx =
3223                         ieee80211_frequency_to_channel(chandef->center_freq2);
3224         else
3225                 vht_oper->center_freq_seg1_idx = 0x00;
3226
3227         switch (chandef->width) {
3228         case NL80211_CHAN_WIDTH_160:
3229                 /*
3230                  * Convert 160 MHz channel width to new style as interop
3231                  * workaround.
3232                  */
3233                 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ;
3234                 vht_oper->center_freq_seg1_idx = vht_oper->center_freq_seg0_idx;
3235                 if (chandef->chan->center_freq < chandef->center_freq1)
3236                         vht_oper->center_freq_seg0_idx -= 8;
3237                 else
3238                         vht_oper->center_freq_seg0_idx += 8;
3239                 break;
3240         case NL80211_CHAN_WIDTH_80P80:
3241                 /*
3242                  * Convert 80+80 MHz channel width to new style as interop
3243                  * workaround.
3244                  */
3245                 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ;
3246                 break;
3247         case NL80211_CHAN_WIDTH_80:
3248                 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ;
3249                 break;
3250         case NL80211_CHAN_WIDTH_320:
3251                 /* VHT information element should not be included on 6GHz */
3252                 WARN_ON(1);
3253                 return pos;
3254         default:
3255                 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_USE_HT;
3256                 break;
3257         }
3258
3259         /* don't require special VHT peer rates */
3260         vht_oper->basic_mcs_set = cpu_to_le16(0xffff);
3261
3262         return pos + sizeof(struct ieee80211_vht_operation);
3263 }
3264
3265 u8 *ieee80211_ie_build_he_oper(u8 *pos, struct cfg80211_chan_def *chandef)
3266 {
3267         struct ieee80211_he_operation *he_oper;
3268         struct ieee80211_he_6ghz_oper *he_6ghz_op;
3269         u32 he_oper_params;
3270         u8 ie_len = 1 + sizeof(struct ieee80211_he_operation);
3271
3272         if (chandef->chan->band == NL80211_BAND_6GHZ)
3273                 ie_len += sizeof(struct ieee80211_he_6ghz_oper);
3274
3275         *pos++ = WLAN_EID_EXTENSION;
3276         *pos++ = ie_len;
3277         *pos++ = WLAN_EID_EXT_HE_OPERATION;
3278
3279         he_oper_params = 0;
3280         he_oper_params |= u32_encode_bits(1023, /* disabled */
3281                                 IEEE80211_HE_OPERATION_RTS_THRESHOLD_MASK);
3282         he_oper_params |= u32_encode_bits(1,
3283                                 IEEE80211_HE_OPERATION_ER_SU_DISABLE);
3284         he_oper_params |= u32_encode_bits(1,
3285                                 IEEE80211_HE_OPERATION_BSS_COLOR_DISABLED);
3286         if (chandef->chan->band == NL80211_BAND_6GHZ)
3287                 he_oper_params |= u32_encode_bits(1,
3288                                 IEEE80211_HE_OPERATION_6GHZ_OP_INFO);
3289
3290         he_oper = (struct ieee80211_he_operation *)pos;
3291         he_oper->he_oper_params = cpu_to_le32(he_oper_params);
3292
3293         /* don't require special HE peer rates */
3294         he_oper->he_mcs_nss_set = cpu_to_le16(0xffff);
3295         pos += sizeof(struct ieee80211_he_operation);
3296
3297         if (chandef->chan->band != NL80211_BAND_6GHZ)
3298                 goto out;
3299
3300         /* TODO add VHT operational */
3301         he_6ghz_op = (struct ieee80211_he_6ghz_oper *)pos;
3302         he_6ghz_op->minrate = 6; /* 6 Mbps */
3303         he_6ghz_op->primary =
3304                 ieee80211_frequency_to_channel(chandef->chan->center_freq);
3305         he_6ghz_op->ccfs0 =
3306                 ieee80211_frequency_to_channel(chandef->center_freq1);
3307         if (chandef->center_freq2)
3308                 he_6ghz_op->ccfs1 =
3309                         ieee80211_frequency_to_channel(chandef->center_freq2);
3310         else
3311                 he_6ghz_op->ccfs1 = 0;
3312
3313         switch (chandef->width) {
3314         case NL80211_CHAN_WIDTH_320:
3315                 /*
3316                  * TODO: mesh operation is not defined over 6GHz 320 MHz
3317                  * channels.
3318                  */
3319                 WARN_ON(1);
3320                 break;
3321         case NL80211_CHAN_WIDTH_160:
3322                 /* Convert 160 MHz channel width to new style as interop
3323                  * workaround.
3324                  */
3325                 he_6ghz_op->control =
3326                         IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_160MHZ;
3327                 he_6ghz_op->ccfs1 = he_6ghz_op->ccfs0;
3328                 if (chandef->chan->center_freq < chandef->center_freq1)
3329                         he_6ghz_op->ccfs0 -= 8;
3330                 else
3331                         he_6ghz_op->ccfs0 += 8;
3332                 fallthrough;
3333         case NL80211_CHAN_WIDTH_80P80:
3334                 he_6ghz_op->control =
3335                         IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_160MHZ;
3336                 break;
3337         case NL80211_CHAN_WIDTH_80:
3338                 he_6ghz_op->control =
3339                         IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_80MHZ;
3340                 break;
3341         case NL80211_CHAN_WIDTH_40:
3342                 he_6ghz_op->control =
3343                         IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_40MHZ;
3344                 break;
3345         default:
3346                 he_6ghz_op->control =
3347                         IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_20MHZ;
3348                 break;
3349         }
3350
3351         pos += sizeof(struct ieee80211_he_6ghz_oper);
3352
3353 out:
3354         return pos;
3355 }
3356
3357 bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper,
3358                                struct cfg80211_chan_def *chandef)
3359 {
3360         enum nl80211_channel_type channel_type;
3361
3362         if (!ht_oper)
3363                 return false;
3364
3365         switch (ht_oper->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) {
3366         case IEEE80211_HT_PARAM_CHA_SEC_NONE:
3367                 channel_type = NL80211_CHAN_HT20;
3368                 break;
3369         case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
3370                 channel_type = NL80211_CHAN_HT40PLUS;
3371                 break;
3372         case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
3373                 channel_type = NL80211_CHAN_HT40MINUS;
3374                 break;
3375         default:
3376                 return false;
3377         }
3378
3379         cfg80211_chandef_create(chandef, chandef->chan, channel_type);
3380         return true;
3381 }
3382
3383 bool ieee80211_chandef_vht_oper(struct ieee80211_hw *hw, u32 vht_cap_info,
3384                                 const struct ieee80211_vht_operation *oper,
3385                                 const struct ieee80211_ht_operation *htop,
3386                                 struct cfg80211_chan_def *chandef)
3387 {
3388         struct cfg80211_chan_def new = *chandef;
3389         int cf0, cf1;
3390         int ccfs0, ccfs1, ccfs2;
3391         int ccf0, ccf1;
3392         u32 vht_cap;
3393         bool support_80_80 = false;
3394         bool support_160 = false;
3395         u8 ext_nss_bw_supp = u32_get_bits(vht_cap_info,
3396                                           IEEE80211_VHT_CAP_EXT_NSS_BW_MASK);
3397         u8 supp_chwidth = u32_get_bits(vht_cap_info,
3398                                        IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK);
3399
3400         if (!oper || !htop)
3401                 return false;
3402
3403         vht_cap = hw->wiphy->bands[chandef->chan->band]->vht_cap.cap;
3404         support_160 = (vht_cap & (IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK |
3405                                   IEEE80211_VHT_CAP_EXT_NSS_BW_MASK));
3406         support_80_80 = ((vht_cap &
3407                          IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ) ||
3408                         (vht_cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ &&
3409                          vht_cap & IEEE80211_VHT_CAP_EXT_NSS_BW_MASK) ||
3410                         ((vht_cap & IEEE80211_VHT_CAP_EXT_NSS_BW_MASK) >>
3411                                     IEEE80211_VHT_CAP_EXT_NSS_BW_SHIFT > 1));
3412         ccfs0 = oper->center_freq_seg0_idx;
3413         ccfs1 = oper->center_freq_seg1_idx;
3414         ccfs2 = (le16_to_cpu(htop->operation_mode) &
3415                                 IEEE80211_HT_OP_MODE_CCFS2_MASK)
3416                         >> IEEE80211_HT_OP_MODE_CCFS2_SHIFT;
3417
3418         ccf0 = ccfs0;
3419
3420         /* if not supported, parse as though we didn't understand it */
3421         if (!ieee80211_hw_check(hw, SUPPORTS_VHT_EXT_NSS_BW))
3422                 ext_nss_bw_supp = 0;
3423
3424         /*
3425          * Cf. IEEE 802.11 Table 9-250
3426          *
3427          * We really just consider that because it's inefficient to connect
3428          * at a higher bandwidth than we'll actually be able to use.
3429          */
3430         switch ((supp_chwidth << 4) | ext_nss_bw_supp) {
3431         default:
3432         case 0x00:
3433                 ccf1 = 0;
3434                 support_160 = false;
3435                 support_80_80 = false;
3436                 break;
3437         case 0x01:
3438                 support_80_80 = false;
3439                 fallthrough;
3440         case 0x02:
3441         case 0x03:
3442                 ccf1 = ccfs2;
3443                 break;
3444         case 0x10:
3445                 ccf1 = ccfs1;
3446                 break;
3447         case 0x11:
3448         case 0x12:
3449                 if (!ccfs1)
3450                         ccf1 = ccfs2;
3451                 else
3452                         ccf1 = ccfs1;
3453                 break;
3454         case 0x13:
3455         case 0x20:
3456         case 0x23:
3457                 ccf1 = ccfs1;
3458                 break;
3459         }
3460
3461         cf0 = ieee80211_channel_to_frequency(ccf0, chandef->chan->band);
3462         cf1 = ieee80211_channel_to_frequency(ccf1, chandef->chan->band);
3463
3464         switch (oper->chan_width) {
3465         case IEEE80211_VHT_CHANWIDTH_USE_HT:
3466                 /* just use HT information directly */
3467                 break;
3468         case IEEE80211_VHT_CHANWIDTH_80MHZ:
3469                 new.width = NL80211_CHAN_WIDTH_80;
3470                 new.center_freq1 = cf0;
3471                 /* If needed, adjust based on the newer interop workaround. */
3472                 if (ccf1) {
3473                         unsigned int diff;
3474
3475                         diff = abs(ccf1 - ccf0);
3476                         if ((diff == 8) && support_160) {
3477                                 new.width = NL80211_CHAN_WIDTH_160;
3478                                 new.center_freq1 = cf1;
3479                         } else if ((diff > 8) && support_80_80) {
3480                                 new.width = NL80211_CHAN_WIDTH_80P80;
3481                                 new.center_freq2 = cf1;
3482                         }
3483                 }
3484                 break;
3485         case IEEE80211_VHT_CHANWIDTH_160MHZ:
3486                 /* deprecated encoding */
3487                 new.width = NL80211_CHAN_WIDTH_160;
3488                 new.center_freq1 = cf0;
3489                 break;
3490         case IEEE80211_VHT_CHANWIDTH_80P80MHZ:
3491                 /* deprecated encoding */
3492                 new.width = NL80211_CHAN_WIDTH_80P80;
3493                 new.center_freq1 = cf0;
3494                 new.center_freq2 = cf1;
3495                 break;
3496         default:
3497                 return false;
3498         }
3499
3500         if (!cfg80211_chandef_valid(&new))
3501                 return false;
3502
3503         *chandef = new;
3504         return true;
3505 }
3506
3507 void ieee80211_chandef_eht_oper(const struct ieee80211_eht_operation *eht_oper,
3508                                 bool support_160, bool support_320,
3509                                 struct cfg80211_chan_def *chandef)
3510 {
3511         struct ieee80211_eht_operation_info *info = (void *)eht_oper->optional;
3512
3513         chandef->center_freq1 =
3514                 ieee80211_channel_to_frequency(info->ccfs0,
3515                                                chandef->chan->band);
3516
3517         switch (u8_get_bits(info->control,
3518                             IEEE80211_EHT_OPER_CHAN_WIDTH)) {
3519         case IEEE80211_EHT_OPER_CHAN_WIDTH_20MHZ:
3520                 chandef->width = NL80211_CHAN_WIDTH_20;
3521                 break;
3522         case IEEE80211_EHT_OPER_CHAN_WIDTH_40MHZ:
3523                 chandef->width = NL80211_CHAN_WIDTH_40;
3524                 break;
3525         case IEEE80211_EHT_OPER_CHAN_WIDTH_80MHZ:
3526                 chandef->width = NL80211_CHAN_WIDTH_80;
3527                 break;
3528         case IEEE80211_EHT_OPER_CHAN_WIDTH_160MHZ:
3529                 if (support_160) {
3530                         chandef->width = NL80211_CHAN_WIDTH_160;
3531                         chandef->center_freq1 =
3532                                 ieee80211_channel_to_frequency(info->ccfs1,
3533                                                                chandef->chan->band);
3534                 } else {
3535                         chandef->width = NL80211_CHAN_WIDTH_80;
3536                 }
3537                 break;
3538         case IEEE80211_EHT_OPER_CHAN_WIDTH_320MHZ:
3539                 if (support_320) {
3540                         chandef->width = NL80211_CHAN_WIDTH_320;
3541                         chandef->center_freq1 =
3542                                 ieee80211_channel_to_frequency(info->ccfs1,
3543                                                                chandef->chan->band);
3544                 } else if (support_160) {
3545                         chandef->width = NL80211_CHAN_WIDTH_160;
3546                 } else {
3547                         chandef->width = NL80211_CHAN_WIDTH_80;
3548
3549                         if (chandef->center_freq1 > chandef->chan->center_freq)
3550                                 chandef->center_freq1 -= 40;
3551                         else
3552                                 chandef->center_freq1 += 40;
3553                 }
3554                 break;
3555         }
3556 }
3557
3558 bool ieee80211_chandef_he_6ghz_oper(struct ieee80211_sub_if_data *sdata,
3559                                     const struct ieee80211_he_operation *he_oper,
3560                                     const struct ieee80211_eht_operation *eht_oper,
3561                                     struct cfg80211_chan_def *chandef)
3562 {
3563         struct ieee80211_local *local = sdata->local;
3564         struct ieee80211_supported_band *sband;
3565         enum nl80211_iftype iftype = ieee80211_vif_type_p2p(&sdata->vif);
3566         const struct ieee80211_sta_he_cap *he_cap;
3567         const struct ieee80211_sta_eht_cap *eht_cap;
3568         struct cfg80211_chan_def he_chandef = *chandef;
3569         const struct ieee80211_he_6ghz_oper *he_6ghz_oper;
3570         struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
3571         bool support_80_80, support_160, support_320;
3572         u8 he_phy_cap, eht_phy_cap;
3573         u32 freq;
3574
3575         if (chandef->chan->band != NL80211_BAND_6GHZ)
3576                 return true;
3577
3578         sband = local->hw.wiphy->bands[NL80211_BAND_6GHZ];
3579
3580         he_cap = ieee80211_get_he_iftype_cap(sband, iftype);
3581         if (!he_cap) {
3582                 sdata_info(sdata, "Missing iftype sband data/HE cap");
3583                 return false;
3584         }
3585
3586         he_phy_cap = he_cap->he_cap_elem.phy_cap_info[0];
3587         support_160 =
3588                 he_phy_cap &
3589                 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G;
3590         support_80_80 =
3591                 he_phy_cap &
3592                 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G;
3593
3594         if (!he_oper) {
3595                 sdata_info(sdata,
3596                            "HE is not advertised on (on %d MHz), expect issues\n",
3597                            chandef->chan->center_freq);
3598                 return false;
3599         }
3600
3601         eht_cap = ieee80211_get_eht_iftype_cap(sband, iftype);
3602         if (!eht_cap)
3603                 eht_oper = NULL;
3604
3605         he_6ghz_oper = ieee80211_he_6ghz_oper(he_oper);
3606
3607         if (!he_6ghz_oper) {
3608                 sdata_info(sdata,
3609                            "HE 6GHz operation missing (on %d MHz), expect issues\n",
3610                            chandef->chan->center_freq);
3611                 return false;
3612         }
3613
3614         /*
3615          * The EHT operation IE does not contain the primary channel so the
3616          * primary channel frequency should be taken from the 6 GHz operation
3617          * information.
3618          */
3619         freq = ieee80211_channel_to_frequency(he_6ghz_oper->primary,
3620                                               NL80211_BAND_6GHZ);
3621         he_chandef.chan = ieee80211_get_channel(sdata->local->hw.wiphy, freq);
3622
3623         switch (u8_get_bits(he_6ghz_oper->control,
3624                             IEEE80211_HE_6GHZ_OPER_CTRL_REG_INFO)) {
3625         case IEEE80211_6GHZ_CTRL_REG_LPI_AP:
3626                 bss_conf->power_type = IEEE80211_REG_LPI_AP;
3627                 break;
3628         case IEEE80211_6GHZ_CTRL_REG_SP_AP:
3629                 bss_conf->power_type = IEEE80211_REG_SP_AP;
3630                 break;
3631         default:
3632                 bss_conf->power_type = IEEE80211_REG_UNSET_AP;
3633                 break;
3634         }
3635
3636         if (!eht_oper ||
3637             !(eht_oper->params & IEEE80211_EHT_OPER_INFO_PRESENT)) {
3638                 switch (u8_get_bits(he_6ghz_oper->control,
3639                                     IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH)) {
3640                 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_20MHZ:
3641                         he_chandef.width = NL80211_CHAN_WIDTH_20;
3642                         break;
3643                 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_40MHZ:
3644                         he_chandef.width = NL80211_CHAN_WIDTH_40;
3645                         break;
3646                 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_80MHZ:
3647                         he_chandef.width = NL80211_CHAN_WIDTH_80;
3648                         break;
3649                 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_160MHZ:
3650                         he_chandef.width = NL80211_CHAN_WIDTH_80;
3651                         if (!he_6ghz_oper->ccfs1)
3652                                 break;
3653                         if (abs(he_6ghz_oper->ccfs1 - he_6ghz_oper->ccfs0) == 8) {
3654                                 if (support_160)
3655                                         he_chandef.width = NL80211_CHAN_WIDTH_160;
3656                         } else {
3657                                 if (support_80_80)
3658                                         he_chandef.width = NL80211_CHAN_WIDTH_80P80;
3659                         }
3660                         break;
3661                 }
3662
3663                 if (he_chandef.width == NL80211_CHAN_WIDTH_160) {
3664                         he_chandef.center_freq1 =
3665                                 ieee80211_channel_to_frequency(he_6ghz_oper->ccfs1,
3666                                                                NL80211_BAND_6GHZ);
3667                 } else {
3668                         he_chandef.center_freq1 =
3669                                 ieee80211_channel_to_frequency(he_6ghz_oper->ccfs0,
3670                                                                NL80211_BAND_6GHZ);
3671                         if (support_80_80 || support_160)
3672                                 he_chandef.center_freq2 =
3673                                         ieee80211_channel_to_frequency(he_6ghz_oper->ccfs1,
3674                                                                        NL80211_BAND_6GHZ);
3675                 }
3676         } else {
3677                 eht_phy_cap = eht_cap->eht_cap_elem.phy_cap_info[0];
3678                 support_320 =
3679                         eht_phy_cap & IEEE80211_EHT_PHY_CAP0_320MHZ_IN_6GHZ;
3680
3681                 ieee80211_chandef_eht_oper(eht_oper, support_160,
3682                                            support_320, &he_chandef);
3683         }
3684
3685         if (!cfg80211_chandef_valid(&he_chandef)) {
3686                 sdata_info(sdata,
3687                            "HE 6GHz operation resulted in invalid chandef: %d MHz/%d/%d MHz/%d MHz\n",
3688                            he_chandef.chan ? he_chandef.chan->center_freq : 0,
3689                            he_chandef.width,
3690                            he_chandef.center_freq1,
3691                            he_chandef.center_freq2);
3692                 return false;
3693         }
3694
3695         *chandef = he_chandef;
3696
3697         return true;
3698 }
3699
3700 bool ieee80211_chandef_s1g_oper(const struct ieee80211_s1g_oper_ie *oper,
3701                                 struct cfg80211_chan_def *chandef)
3702 {
3703         u32 oper_freq;
3704
3705         if (!oper)
3706                 return false;
3707
3708         switch (FIELD_GET(S1G_OPER_CH_WIDTH_OPER, oper->ch_width)) {
3709         case IEEE80211_S1G_CHANWIDTH_1MHZ:
3710                 chandef->width = NL80211_CHAN_WIDTH_1;
3711                 break;
3712         case IEEE80211_S1G_CHANWIDTH_2MHZ:
3713                 chandef->width = NL80211_CHAN_WIDTH_2;
3714                 break;
3715         case IEEE80211_S1G_CHANWIDTH_4MHZ:
3716                 chandef->width = NL80211_CHAN_WIDTH_4;
3717                 break;
3718         case IEEE80211_S1G_CHANWIDTH_8MHZ:
3719                 chandef->width = NL80211_CHAN_WIDTH_8;
3720                 break;
3721         case IEEE80211_S1G_CHANWIDTH_16MHZ:
3722                 chandef->width = NL80211_CHAN_WIDTH_16;
3723                 break;
3724         default:
3725                 return false;
3726         }
3727
3728         oper_freq = ieee80211_channel_to_freq_khz(oper->oper_ch,
3729                                                   NL80211_BAND_S1GHZ);
3730         chandef->center_freq1 = KHZ_TO_MHZ(oper_freq);
3731         chandef->freq1_offset = oper_freq % 1000;
3732
3733         return true;
3734 }
3735
3736 int ieee80211_parse_bitrates(enum nl80211_chan_width width,
3737                              const struct ieee80211_supported_band *sband,
3738                              const u8 *srates, int srates_len, u32 *rates)
3739 {
3740         u32 rate_flags = ieee80211_chanwidth_rate_flags(width);
3741         int shift = ieee80211_chanwidth_get_shift(width);
3742         struct ieee80211_rate *br;
3743         int brate, rate, i, j, count = 0;
3744
3745         *rates = 0;
3746
3747         for (i = 0; i < srates_len; i++) {
3748                 rate = srates[i] & 0x7f;
3749
3750                 for (j = 0; j < sband->n_bitrates; j++) {
3751                         br = &sband->bitrates[j];
3752                         if ((rate_flags & br->flags) != rate_flags)
3753                                 continue;
3754
3755                         brate = DIV_ROUND_UP(br->bitrate, (1 << shift) * 5);
3756                         if (brate == rate) {
3757                                 *rates |= BIT(j);
3758                                 count++;
3759                                 break;
3760                         }
3761                 }
3762         }
3763         return count;
3764 }
3765
3766 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
3767                             struct sk_buff *skb, bool need_basic,
3768                             enum nl80211_band band)
3769 {
3770         struct ieee80211_local *local = sdata->local;
3771         struct ieee80211_supported_band *sband;
3772         int rate, shift;
3773         u8 i, rates, *pos;
3774         u32 basic_rates = sdata->vif.bss_conf.basic_rates;
3775         u32 rate_flags;
3776
3777         shift = ieee80211_vif_get_shift(&sdata->vif);
3778         rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef);
3779         sband = local->hw.wiphy->bands[band];
3780         rates = 0;
3781         for (i = 0; i < sband->n_bitrates; i++) {
3782                 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
3783                         continue;
3784                 rates++;
3785         }
3786         if (rates > 8)
3787                 rates = 8;
3788
3789         if (skb_tailroom(skb) < rates + 2)
3790                 return -ENOMEM;
3791
3792         pos = skb_put(skb, rates + 2);
3793         *pos++ = WLAN_EID_SUPP_RATES;
3794         *pos++ = rates;
3795         for (i = 0; i < rates; i++) {
3796                 u8 basic = 0;
3797                 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
3798                         continue;
3799
3800                 if (need_basic && basic_rates & BIT(i))
3801                         basic = 0x80;
3802                 rate = DIV_ROUND_UP(sband->bitrates[i].bitrate,
3803                                     5 * (1 << shift));
3804                 *pos++ = basic | (u8) rate;
3805         }
3806
3807         return 0;
3808 }
3809
3810 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
3811                                 struct sk_buff *skb, bool need_basic,
3812                                 enum nl80211_band band)
3813 {
3814         struct ieee80211_local *local = sdata->local;
3815         struct ieee80211_supported_band *sband;
3816         int rate, shift;
3817         u8 i, exrates, *pos;
3818         u32 basic_rates = sdata->vif.bss_conf.basic_rates;
3819         u32 rate_flags;
3820
3821         rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef);
3822         shift = ieee80211_vif_get_shift(&sdata->vif);
3823
3824         sband = local->hw.wiphy->bands[band];
3825         exrates = 0;
3826         for (i = 0; i < sband->n_bitrates; i++) {
3827                 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
3828                         continue;
3829                 exrates++;
3830         }
3831
3832         if (exrates > 8)
3833                 exrates -= 8;
3834         else
3835                 exrates = 0;
3836
3837         if (skb_tailroom(skb) < exrates + 2)
3838                 return -ENOMEM;
3839
3840         if (exrates) {
3841                 pos = skb_put(skb, exrates + 2);
3842                 *pos++ = WLAN_EID_EXT_SUPP_RATES;
3843                 *pos++ = exrates;
3844                 for (i = 8; i < sband->n_bitrates; i++) {
3845                         u8 basic = 0;
3846                         if ((rate_flags & sband->bitrates[i].flags)
3847                             != rate_flags)
3848                                 continue;
3849                         if (need_basic && basic_rates & BIT(i))
3850                                 basic = 0x80;
3851                         rate = DIV_ROUND_UP(sband->bitrates[i].bitrate,
3852                                             5 * (1 << shift));
3853                         *pos++ = basic | (u8) rate;
3854                 }
3855         }
3856         return 0;
3857 }
3858
3859 int ieee80211_ave_rssi(struct ieee80211_vif *vif)
3860 {
3861         struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
3862
3863         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION))
3864                 return 0;
3865
3866         return -ewma_beacon_signal_read(&sdata->deflink.u.mgd.ave_beacon_signal);
3867 }
3868 EXPORT_SYMBOL_GPL(ieee80211_ave_rssi);
3869
3870 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs)
3871 {
3872         if (!mcs)
3873                 return 1;
3874
3875         /* TODO: consider rx_highest */
3876
3877         if (mcs->rx_mask[3])
3878                 return 4;
3879         if (mcs->rx_mask[2])
3880                 return 3;
3881         if (mcs->rx_mask[1])
3882                 return 2;
3883         return 1;
3884 }
3885
3886 /**
3887  * ieee80211_calculate_rx_timestamp - calculate timestamp in frame
3888  * @local: mac80211 hw info struct
3889  * @status: RX status
3890  * @mpdu_len: total MPDU length (including FCS)
3891  * @mpdu_offset: offset into MPDU to calculate timestamp at
3892  *
3893  * This function calculates the RX timestamp at the given MPDU offset, taking
3894  * into account what the RX timestamp was. An offset of 0 will just normalize
3895  * the timestamp to TSF at beginning of MPDU reception.
3896  */
3897 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
3898                                      struct ieee80211_rx_status *status,
3899                                      unsigned int mpdu_len,
3900                                      unsigned int mpdu_offset)
3901 {
3902         u64 ts = status->mactime;
3903         struct rate_info ri;
3904         u16 rate;
3905         u8 n_ltf;
3906
3907         if (WARN_ON(!ieee80211_have_rx_timestamp(status)))
3908                 return 0;
3909
3910         memset(&ri, 0, sizeof(ri));
3911
3912         ri.bw = status->bw;
3913
3914         /* Fill cfg80211 rate info */
3915         switch (status->encoding) {
3916         case RX_ENC_HE:
3917                 ri.flags |= RATE_INFO_FLAGS_HE_MCS;
3918                 ri.mcs = status->rate_idx;
3919                 ri.nss = status->nss;
3920                 ri.he_ru_alloc = status->he_ru;
3921                 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI)
3922                         ri.flags |= RATE_INFO_FLAGS_SHORT_GI;
3923
3924                 /*
3925                  * See P802.11ax_D6.0, section 27.3.4 for
3926                  * VHT PPDU format.
3927                  */
3928                 if (status->flag & RX_FLAG_MACTIME_PLCP_START) {
3929                         mpdu_offset += 2;
3930                         ts += 36;
3931
3932                         /*
3933                          * TODO:
3934                          * For HE MU PPDU, add the HE-SIG-B.
3935                          * For HE ER PPDU, add 8us for the HE-SIG-A.
3936                          * For HE TB PPDU, add 4us for the HE-STF.
3937                          * Add the HE-LTF durations - variable.
3938                          */
3939                 }
3940
3941                 break;
3942         case RX_ENC_HT:
3943                 ri.mcs = status->rate_idx;
3944                 ri.flags |= RATE_INFO_FLAGS_MCS;
3945                 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI)
3946                         ri.flags |= RATE_INFO_FLAGS_SHORT_GI;
3947
3948                 /*
3949                  * See P802.11REVmd_D3.0, section 19.3.2 for
3950                  * HT PPDU format.
3951                  */
3952                 if (status->flag & RX_FLAG_MACTIME_PLCP_START) {
3953                         mpdu_offset += 2;
3954                         if (status->enc_flags & RX_ENC_FLAG_HT_GF)
3955                                 ts += 24;
3956                         else
3957                                 ts += 32;
3958
3959                         /*
3960                          * Add Data HT-LTFs per streams
3961                          * TODO: add Extension HT-LTFs, 4us per LTF
3962                          */
3963                         n_ltf = ((ri.mcs >> 3) & 3) + 1;
3964                         n_ltf = n_ltf == 3 ? 4 : n_ltf;
3965                         ts += n_ltf * 4;
3966                 }
3967
3968                 break;
3969         case RX_ENC_VHT:
3970                 ri.flags |= RATE_INFO_FLAGS_VHT_MCS;
3971                 ri.mcs = status->rate_idx;
3972                 ri.nss = status->nss;
3973                 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI)
3974                         ri.flags |= RATE_INFO_FLAGS_SHORT_GI;
3975
3976                 /*
3977                  * See P802.11REVmd_D3.0, section 21.3.2 for
3978                  * VHT PPDU format.
3979                  */
3980                 if (status->flag & RX_FLAG_MACTIME_PLCP_START) {
3981                         mpdu_offset += 2;
3982                         ts += 36;
3983
3984                         /*
3985                          * Add VHT-LTFs per streams
3986                          */
3987                         n_ltf = (ri.nss != 1) && (ri.nss % 2) ?
3988                                 ri.nss + 1 : ri.nss;
3989                         ts += 4 * n_ltf;
3990                 }
3991
3992                 break;
3993         default:
3994                 WARN_ON(1);
3995                 fallthrough;
3996         case RX_ENC_LEGACY: {
3997                 struct ieee80211_supported_band *sband;
3998                 int shift = 0;
3999                 int bitrate;
4000
4001                 switch (status->bw) {
4002                 case RATE_INFO_BW_10:
4003                         shift = 1;
4004                         break;
4005                 case RATE_INFO_BW_5:
4006                         shift = 2;
4007                         break;
4008                 }
4009
4010                 sband = local->hw.wiphy->bands[status->band];
4011                 bitrate = sband->bitrates[status->rate_idx].bitrate;
4012                 ri.legacy = DIV_ROUND_UP(bitrate, (1 << shift));
4013
4014                 if (status->flag & RX_FLAG_MACTIME_PLCP_START) {
4015                         if (status->band == NL80211_BAND_5GHZ) {
4016                                 ts += 20 << shift;
4017                                 mpdu_offset += 2;
4018                         } else if (status->enc_flags & RX_ENC_FLAG_SHORTPRE) {
4019                                 ts += 96;
4020                         } else {
4021                                 ts += 192;
4022                         }
4023                 }
4024                 break;
4025                 }
4026         }
4027
4028         rate = cfg80211_calculate_bitrate(&ri);
4029         if (WARN_ONCE(!rate,
4030                       "Invalid bitrate: flags=0x%llx, idx=%d, vht_nss=%d\n",
4031                       (unsigned long long)status->flag, status->rate_idx,
4032                       status->nss))
4033                 return 0;
4034
4035         /* rewind from end of MPDU */
4036         if (status->flag & RX_FLAG_MACTIME_END)
4037                 ts -= mpdu_len * 8 * 10 / rate;
4038
4039         ts += mpdu_offset * 8 * 10 / rate;
4040
4041         return ts;
4042 }
4043
4044 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local)
4045 {
4046         struct ieee80211_sub_if_data *sdata;
4047         struct cfg80211_chan_def chandef;
4048
4049         /* for interface list, to avoid linking iflist_mtx and chanctx_mtx */
4050         lockdep_assert_wiphy(local->hw.wiphy);
4051
4052         mutex_lock(&local->mtx);
4053         list_for_each_entry(sdata, &local->interfaces, list) {
4054                 /* it might be waiting for the local->mtx, but then
4055                  * by the time it gets it, sdata->wdev.cac_started
4056                  * will no longer be true
4057                  */
4058                 cancel_delayed_work(&sdata->deflink.dfs_cac_timer_work);
4059
4060                 if (sdata->wdev.cac_started) {
4061                         chandef = sdata->vif.bss_conf.chandef;
4062                         ieee80211_link_release_channel(&sdata->deflink);
4063                         cfg80211_cac_event(sdata->dev,
4064                                            &chandef,
4065                                            NL80211_RADAR_CAC_ABORTED,
4066                                            GFP_KERNEL);
4067                 }
4068         }
4069         mutex_unlock(&local->mtx);
4070 }
4071
4072 void ieee80211_dfs_radar_detected_work(struct wiphy *wiphy,
4073                                        struct wiphy_work *work)
4074 {
4075         struct ieee80211_local *local =
4076                 container_of(work, struct ieee80211_local, radar_detected_work);
4077         struct cfg80211_chan_def chandef = local->hw.conf.chandef;
4078         struct ieee80211_chanctx *ctx;
4079         int num_chanctx = 0;
4080
4081         mutex_lock(&local->chanctx_mtx);
4082         list_for_each_entry(ctx, &local->chanctx_list, list) {
4083                 if (ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER)
4084                         continue;
4085
4086                 num_chanctx++;
4087                 chandef = ctx->conf.def;
4088         }
4089         mutex_unlock(&local->chanctx_mtx);
4090
4091         ieee80211_dfs_cac_cancel(local);
4092
4093         if (num_chanctx > 1)
4094                 /* XXX: multi-channel is not supported yet */
4095                 WARN_ON(1);
4096         else
4097                 cfg80211_radar_event(local->hw.wiphy, &chandef, GFP_KERNEL);
4098 }
4099
4100 void ieee80211_radar_detected(struct ieee80211_hw *hw)
4101 {
4102         struct ieee80211_local *local = hw_to_local(hw);
4103
4104         trace_api_radar_detected(local);
4105
4106         wiphy_work_queue(hw->wiphy, &local->radar_detected_work);
4107 }
4108 EXPORT_SYMBOL(ieee80211_radar_detected);
4109
4110 ieee80211_conn_flags_t ieee80211_chandef_downgrade(struct cfg80211_chan_def *c)
4111 {
4112         ieee80211_conn_flags_t ret;
4113         int tmp;
4114
4115         switch (c->width) {
4116         case NL80211_CHAN_WIDTH_20:
4117                 c->width = NL80211_CHAN_WIDTH_20_NOHT;
4118                 ret = IEEE80211_CONN_DISABLE_HT | IEEE80211_CONN_DISABLE_VHT;
4119                 break;
4120         case NL80211_CHAN_WIDTH_40:
4121                 c->width = NL80211_CHAN_WIDTH_20;
4122                 c->center_freq1 = c->chan->center_freq;
4123                 ret = IEEE80211_CONN_DISABLE_40MHZ |
4124                       IEEE80211_CONN_DISABLE_VHT;
4125                 break;
4126         case NL80211_CHAN_WIDTH_80:
4127                 tmp = (30 + c->chan->center_freq - c->center_freq1)/20;
4128                 /* n_P40 */
4129                 tmp /= 2;
4130                 /* freq_P40 */
4131                 c->center_freq1 = c->center_freq1 - 20 + 40 * tmp;
4132                 c->width = NL80211_CHAN_WIDTH_40;
4133                 ret = IEEE80211_CONN_DISABLE_VHT;
4134                 break;
4135         case NL80211_CHAN_WIDTH_80P80:
4136                 c->center_freq2 = 0;
4137                 c->width = NL80211_CHAN_WIDTH_80;
4138                 ret = IEEE80211_CONN_DISABLE_80P80MHZ |
4139                       IEEE80211_CONN_DISABLE_160MHZ;
4140                 break;
4141         case NL80211_CHAN_WIDTH_160:
4142                 /* n_P20 */
4143                 tmp = (70 + c->chan->center_freq - c->center_freq1)/20;
4144                 /* n_P80 */
4145                 tmp /= 4;
4146                 c->center_freq1 = c->center_freq1 - 40 + 80 * tmp;
4147                 c->width = NL80211_CHAN_WIDTH_80;
4148                 ret = IEEE80211_CONN_DISABLE_80P80MHZ |
4149                       IEEE80211_CONN_DISABLE_160MHZ;
4150                 break;
4151         case NL80211_CHAN_WIDTH_320:
4152                 /* n_P20 */
4153                 tmp = (150 + c->chan->center_freq - c->center_freq1) / 20;
4154                 /* n_P160 */
4155                 tmp /= 8;
4156                 c->center_freq1 = c->center_freq1 - 80 + 160 * tmp;
4157                 c->width = NL80211_CHAN_WIDTH_160;
4158                 ret = IEEE80211_CONN_DISABLE_320MHZ;
4159                 break;
4160         default:
4161         case NL80211_CHAN_WIDTH_20_NOHT:
4162                 WARN_ON_ONCE(1);
4163                 c->width = NL80211_CHAN_WIDTH_20_NOHT;
4164                 ret = IEEE80211_CONN_DISABLE_HT | IEEE80211_CONN_DISABLE_VHT;
4165                 break;
4166         case NL80211_CHAN_WIDTH_1:
4167         case NL80211_CHAN_WIDTH_2:
4168         case NL80211_CHAN_WIDTH_4:
4169         case NL80211_CHAN_WIDTH_8:
4170         case NL80211_CHAN_WIDTH_16:
4171         case NL80211_CHAN_WIDTH_5:
4172         case NL80211_CHAN_WIDTH_10:
4173                 WARN_ON_ONCE(1);
4174                 /* keep c->width */
4175                 ret = IEEE80211_CONN_DISABLE_HT | IEEE80211_CONN_DISABLE_VHT;
4176                 break;
4177         }
4178
4179         WARN_ON_ONCE(!cfg80211_chandef_valid(c));
4180
4181         return ret;
4182 }
4183
4184 /*
4185  * Returns true if smps_mode_new is strictly more restrictive than
4186  * smps_mode_old.
4187  */
4188 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old,
4189                                    enum ieee80211_smps_mode smps_mode_new)
4190 {
4191         if (WARN_ON_ONCE(smps_mode_old == IEEE80211_SMPS_AUTOMATIC ||
4192                          smps_mode_new == IEEE80211_SMPS_AUTOMATIC))
4193                 return false;
4194
4195         switch (smps_mode_old) {
4196         case IEEE80211_SMPS_STATIC:
4197                 return false;
4198         case IEEE80211_SMPS_DYNAMIC:
4199                 return smps_mode_new == IEEE80211_SMPS_STATIC;
4200         case IEEE80211_SMPS_OFF:
4201                 return smps_mode_new != IEEE80211_SMPS_OFF;
4202         default:
4203                 WARN_ON(1);
4204         }
4205
4206         return false;
4207 }
4208
4209 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata,
4210                               struct cfg80211_csa_settings *csa_settings)
4211 {
4212         struct sk_buff *skb;
4213         struct ieee80211_mgmt *mgmt;
4214         struct ieee80211_local *local = sdata->local;
4215         int freq;
4216         int hdr_len = offsetofend(struct ieee80211_mgmt,
4217                                   u.action.u.chan_switch);
4218         u8 *pos;
4219
4220         if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
4221             sdata->vif.type != NL80211_IFTYPE_MESH_POINT)
4222                 return -EOPNOTSUPP;
4223
4224         skb = dev_alloc_skb(local->tx_headroom + hdr_len +
4225                             5 + /* channel switch announcement element */
4226                             3 + /* secondary channel offset element */
4227                             5 + /* wide bandwidth channel switch announcement */
4228                             8); /* mesh channel switch parameters element */
4229         if (!skb)
4230                 return -ENOMEM;
4231
4232         skb_reserve(skb, local->tx_headroom);
4233         mgmt = skb_put_zero(skb, hdr_len);
4234         mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
4235                                           IEEE80211_STYPE_ACTION);
4236
4237         eth_broadcast_addr(mgmt->da);
4238         memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
4239         if (ieee80211_vif_is_mesh(&sdata->vif)) {
4240                 memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN);
4241         } else {
4242                 struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
4243                 memcpy(mgmt->bssid, ifibss->bssid, ETH_ALEN);
4244         }
4245         mgmt->u.action.category = WLAN_CATEGORY_SPECTRUM_MGMT;
4246         mgmt->u.action.u.chan_switch.action_code = WLAN_ACTION_SPCT_CHL_SWITCH;
4247         pos = skb_put(skb, 5);
4248         *pos++ = WLAN_EID_CHANNEL_SWITCH;                       /* EID */
4249         *pos++ = 3;                                             /* IE length */
4250         *pos++ = csa_settings->block_tx ? 1 : 0;                /* CSA mode */
4251         freq = csa_settings->chandef.chan->center_freq;
4252         *pos++ = ieee80211_frequency_to_channel(freq);          /* channel */
4253         *pos++ = csa_settings->count;                           /* count */
4254
4255         if (csa_settings->chandef.width == NL80211_CHAN_WIDTH_40) {
4256                 enum nl80211_channel_type ch_type;
4257
4258                 skb_put(skb, 3);
4259                 *pos++ = WLAN_EID_SECONDARY_CHANNEL_OFFSET;     /* EID */
4260                 *pos++ = 1;                                     /* IE length */
4261                 ch_type = cfg80211_get_chandef_type(&csa_settings->chandef);
4262                 if (ch_type == NL80211_CHAN_HT40PLUS)
4263                         *pos++ = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
4264                 else
4265                         *pos++ = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
4266         }
4267
4268         if (ieee80211_vif_is_mesh(&sdata->vif)) {
4269                 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
4270
4271                 skb_put(skb, 8);
4272                 *pos++ = WLAN_EID_CHAN_SWITCH_PARAM;            /* EID */
4273                 *pos++ = 6;                                     /* IE length */
4274                 *pos++ = sdata->u.mesh.mshcfg.dot11MeshTTL;     /* Mesh TTL */
4275                 *pos = 0x00;    /* Mesh Flag: Tx Restrict, Initiator, Reason */
4276                 *pos |= WLAN_EID_CHAN_SWITCH_PARAM_INITIATOR;
4277                 *pos++ |= csa_settings->block_tx ?
4278                           WLAN_EID_CHAN_SWITCH_PARAM_TX_RESTRICT : 0x00;
4279                 put_unaligned_le16(WLAN_REASON_MESH_CHAN, pos); /* Reason Cd */
4280                 pos += 2;
4281                 put_unaligned_le16(ifmsh->pre_value, pos);/* Precedence Value */
4282                 pos += 2;
4283         }
4284
4285         if (csa_settings->chandef.width == NL80211_CHAN_WIDTH_80 ||
4286             csa_settings->chandef.width == NL80211_CHAN_WIDTH_80P80 ||
4287             csa_settings->chandef.width == NL80211_CHAN_WIDTH_160) {
4288                 skb_put(skb, 5);
4289                 ieee80211_ie_build_wide_bw_cs(pos, &csa_settings->chandef);
4290         }
4291
4292         ieee80211_tx_skb(sdata, skb);
4293         return 0;
4294 }
4295
4296 static bool
4297 ieee80211_extend_noa_desc(struct ieee80211_noa_data *data, u32 tsf, int i)
4298 {
4299         s32 end = data->desc[i].start + data->desc[i].duration - (tsf + 1);
4300         int skip;
4301
4302         if (end > 0)
4303                 return false;
4304
4305         /* One shot NOA  */
4306         if (data->count[i] == 1)
4307                 return false;
4308
4309         if (data->desc[i].interval == 0)
4310                 return false;
4311
4312         /* End time is in the past, check for repetitions */
4313         skip = DIV_ROUND_UP(-end, data->desc[i].interval);
4314         if (data->count[i] < 255) {
4315                 if (data->count[i] <= skip) {
4316                         data->count[i] = 0;
4317                         return false;
4318                 }
4319
4320                 data->count[i] -= skip;
4321         }
4322
4323         data->desc[i].start += skip * data->desc[i].interval;
4324
4325         return true;
4326 }
4327
4328 static bool
4329 ieee80211_extend_absent_time(struct ieee80211_noa_data *data, u32 tsf,
4330                              s32 *offset)
4331 {
4332         bool ret = false;
4333         int i;
4334
4335         for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) {
4336                 s32 cur;
4337
4338                 if (!data->count[i])
4339                         continue;
4340
4341                 if (ieee80211_extend_noa_desc(data, tsf + *offset, i))
4342                         ret = true;
4343
4344                 cur = data->desc[i].start - tsf;
4345                 if (cur > *offset)
4346                         continue;
4347
4348                 cur = data->desc[i].start + data->desc[i].duration - tsf;
4349                 if (cur > *offset)
4350                         *offset = cur;
4351         }
4352
4353         return ret;
4354 }
4355
4356 static u32
4357 ieee80211_get_noa_absent_time(struct ieee80211_noa_data *data, u32 tsf)
4358 {
4359         s32 offset = 0;
4360         int tries = 0;
4361         /*
4362          * arbitrary limit, used to avoid infinite loops when combined NoA
4363          * descriptors cover the full time period.
4364          */
4365         int max_tries = 5;
4366
4367         ieee80211_extend_absent_time(data, tsf, &offset);
4368         do {
4369                 if (!ieee80211_extend_absent_time(data, tsf, &offset))
4370                         break;
4371
4372                 tries++;
4373         } while (tries < max_tries);
4374
4375         return offset;
4376 }
4377
4378 void ieee80211_update_p2p_noa(struct ieee80211_noa_data *data, u32 tsf)
4379 {
4380         u32 next_offset = BIT(31) - 1;
4381         int i;
4382
4383         data->absent = 0;
4384         data->has_next_tsf = false;
4385         for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) {
4386                 s32 start;
4387
4388                 if (!data->count[i])
4389                         continue;
4390
4391                 ieee80211_extend_noa_desc(data, tsf, i);
4392                 start = data->desc[i].start - tsf;
4393                 if (start <= 0)
4394                         data->absent |= BIT(i);
4395
4396                 if (next_offset > start)
4397                         next_offset = start;
4398
4399                 data->has_next_tsf = true;
4400         }
4401
4402         if (data->absent)
4403                 next_offset = ieee80211_get_noa_absent_time(data, tsf);
4404
4405         data->next_tsf = tsf + next_offset;
4406 }
4407 EXPORT_SYMBOL(ieee80211_update_p2p_noa);
4408
4409 int ieee80211_parse_p2p_noa(const struct ieee80211_p2p_noa_attr *attr,
4410                             struct ieee80211_noa_data *data, u32 tsf)
4411 {
4412         int ret = 0;
4413         int i;
4414
4415         memset(data, 0, sizeof(*data));
4416
4417         for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) {
4418                 const struct ieee80211_p2p_noa_desc *desc = &attr->desc[i];
4419
4420                 if (!desc->count || !desc->duration)
4421                         continue;
4422
4423                 data->count[i] = desc->count;
4424                 data->desc[i].start = le32_to_cpu(desc->start_time);
4425                 data->desc[i].duration = le32_to_cpu(desc->duration);
4426                 data->desc[i].interval = le32_to_cpu(desc->interval);
4427
4428                 if (data->count[i] > 1 &&
4429                     data->desc[i].interval < data->desc[i].duration)
4430                         continue;
4431
4432                 ieee80211_extend_noa_desc(data, tsf, i);
4433                 ret++;
4434         }
4435
4436         if (ret)
4437                 ieee80211_update_p2p_noa(data, tsf);
4438
4439         return ret;
4440 }
4441 EXPORT_SYMBOL(ieee80211_parse_p2p_noa);
4442
4443 void ieee80211_recalc_dtim(struct ieee80211_local *local,
4444                            struct ieee80211_sub_if_data *sdata)
4445 {
4446         u64 tsf = drv_get_tsf(local, sdata);
4447         u64 dtim_count = 0;
4448         u16 beacon_int = sdata->vif.bss_conf.beacon_int * 1024;
4449         u8 dtim_period = sdata->vif.bss_conf.dtim_period;
4450         struct ps_data *ps;
4451         u8 bcns_from_dtim;
4452
4453         if (tsf == -1ULL || !beacon_int || !dtim_period)
4454                 return;
4455
4456         if (sdata->vif.type == NL80211_IFTYPE_AP ||
4457             sdata->vif.type == NL80211_IFTYPE_AP_VLAN) {
4458                 if (!sdata->bss)
4459                         return;
4460
4461                 ps = &sdata->bss->ps;
4462         } else if (ieee80211_vif_is_mesh(&sdata->vif)) {
4463                 ps = &sdata->u.mesh.ps;
4464         } else {
4465                 return;
4466         }
4467
4468         /*
4469          * actually finds last dtim_count, mac80211 will update in
4470          * __beacon_add_tim().
4471          * dtim_count = dtim_period - (tsf / bcn_int) % dtim_period
4472          */
4473         do_div(tsf, beacon_int);
4474         bcns_from_dtim = do_div(tsf, dtim_period);
4475         /* just had a DTIM */
4476         if (!bcns_from_dtim)
4477                 dtim_count = 0;
4478         else
4479                 dtim_count = dtim_period - bcns_from_dtim;
4480
4481         ps->dtim_count = dtim_count;
4482 }
4483
4484 static u8 ieee80211_chanctx_radar_detect(struct ieee80211_local *local,
4485                                          struct ieee80211_chanctx *ctx)
4486 {
4487         struct ieee80211_link_data *link;
4488         u8 radar_detect = 0;
4489
4490         lockdep_assert_held(&local->chanctx_mtx);
4491
4492         if (WARN_ON(ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED))
4493                 return 0;
4494
4495         list_for_each_entry(link, &ctx->reserved_links, reserved_chanctx_list)
4496                 if (link->reserved_radar_required)
4497                         radar_detect |= BIT(link->reserved_chandef.width);
4498
4499         /*
4500          * An in-place reservation context should not have any assigned vifs
4501          * until it replaces the other context.
4502          */
4503         WARN_ON(ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER &&
4504                 !list_empty(&ctx->assigned_links));
4505
4506         list_for_each_entry(link, &ctx->assigned_links, assigned_chanctx_list) {
4507                 if (!link->radar_required)
4508                         continue;
4509
4510                 radar_detect |=
4511                         BIT(link->conf->chandef.width);
4512         }
4513
4514         return radar_detect;
4515 }
4516
4517 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata,
4518                                  const struct cfg80211_chan_def *chandef,
4519                                  enum ieee80211_chanctx_mode chanmode,
4520                                  u8 radar_detect)
4521 {
4522         struct ieee80211_local *local = sdata->local;
4523         struct ieee80211_sub_if_data *sdata_iter;
4524         enum nl80211_iftype iftype = sdata->wdev.iftype;
4525         struct ieee80211_chanctx *ctx;
4526         int total = 1;
4527         struct iface_combination_params params = {
4528                 .radar_detect = radar_detect,
4529         };
4530
4531         lockdep_assert_held(&local->chanctx_mtx);
4532
4533         if (WARN_ON(hweight32(radar_detect) > 1))
4534                 return -EINVAL;
4535
4536         if (WARN_ON(chandef && chanmode == IEEE80211_CHANCTX_SHARED &&
4537                     !chandef->chan))
4538                 return -EINVAL;
4539
4540         if (WARN_ON(iftype >= NUM_NL80211_IFTYPES))
4541                 return -EINVAL;
4542
4543         if (sdata->vif.type == NL80211_IFTYPE_AP ||
4544             sdata->vif.type == NL80211_IFTYPE_MESH_POINT) {
4545                 /*
4546                  * always passing this is harmless, since it'll be the
4547                  * same value that cfg80211 finds if it finds the same
4548                  * interface ... and that's always allowed
4549                  */
4550                 params.new_beacon_int = sdata->vif.bss_conf.beacon_int;
4551         }
4552
4553         /* Always allow software iftypes */
4554         if (cfg80211_iftype_allowed(local->hw.wiphy, iftype, 0, 1)) {
4555                 if (radar_detect)
4556                         return -EINVAL;
4557                 return 0;
4558         }
4559
4560         if (chandef)
4561                 params.num_different_channels = 1;
4562
4563         if (iftype != NL80211_IFTYPE_UNSPECIFIED)
4564                 params.iftype_num[iftype] = 1;
4565
4566         list_for_each_entry(ctx, &local->chanctx_list, list) {
4567                 if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED)
4568                         continue;
4569                 params.radar_detect |=
4570                         ieee80211_chanctx_radar_detect(local, ctx);
4571                 if (ctx->mode == IEEE80211_CHANCTX_EXCLUSIVE) {
4572                         params.num_different_channels++;
4573                         continue;
4574                 }
4575                 if (chandef && chanmode == IEEE80211_CHANCTX_SHARED &&
4576                     cfg80211_chandef_compatible(chandef,
4577                                                 &ctx->conf.def))
4578                         continue;
4579                 params.num_different_channels++;
4580         }
4581
4582         list_for_each_entry_rcu(sdata_iter, &local->interfaces, list) {
4583                 struct wireless_dev *wdev_iter;
4584
4585                 wdev_iter = &sdata_iter->wdev;
4586
4587                 if (sdata_iter == sdata ||
4588                     !ieee80211_sdata_running(sdata_iter) ||
4589                     cfg80211_iftype_allowed(local->hw.wiphy,
4590                                             wdev_iter->iftype, 0, 1))
4591                         continue;
4592
4593                 params.iftype_num[wdev_iter->iftype]++;
4594                 total++;
4595         }
4596
4597         if (total == 1 && !params.radar_detect)
4598                 return 0;
4599
4600         return cfg80211_check_combinations(local->hw.wiphy, &params);
4601 }
4602
4603 static void
4604 ieee80211_iter_max_chans(const struct ieee80211_iface_combination *c,
4605                          void *data)
4606 {
4607         u32 *max_num_different_channels = data;
4608
4609         *max_num_different_channels = max(*max_num_different_channels,
4610                                           c->num_different_channels);
4611 }
4612
4613 int ieee80211_max_num_channels(struct ieee80211_local *local)
4614 {
4615         struct ieee80211_sub_if_data *sdata;
4616         struct ieee80211_chanctx *ctx;
4617         u32 max_num_different_channels = 1;
4618         int err;
4619         struct iface_combination_params params = {0};
4620
4621         lockdep_assert_held(&local->chanctx_mtx);
4622
4623         list_for_each_entry(ctx, &local->chanctx_list, list) {
4624                 if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED)
4625                         continue;
4626
4627                 params.num_different_channels++;
4628
4629                 params.radar_detect |=
4630                         ieee80211_chanctx_radar_detect(local, ctx);
4631         }
4632
4633         list_for_each_entry_rcu(sdata, &local->interfaces, list)
4634                 params.iftype_num[sdata->wdev.iftype]++;
4635
4636         err = cfg80211_iter_combinations(local->hw.wiphy, &params,
4637                                          ieee80211_iter_max_chans,
4638                                          &max_num_different_channels);
4639         if (err < 0)
4640                 return err;
4641
4642         return max_num_different_channels;
4643 }
4644
4645 void ieee80211_add_s1g_capab_ie(struct ieee80211_sub_if_data *sdata,
4646                                 struct ieee80211_sta_s1g_cap *caps,
4647                                 struct sk_buff *skb)
4648 {
4649         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4650         struct ieee80211_s1g_cap s1g_capab;
4651         u8 *pos;
4652         int i;
4653
4654         if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
4655                 return;
4656
4657         if (!caps->s1g)
4658                 return;
4659
4660         memcpy(s1g_capab.capab_info, caps->cap, sizeof(caps->cap));
4661         memcpy(s1g_capab.supp_mcs_nss, caps->nss_mcs, sizeof(caps->nss_mcs));
4662
4663         /* override the capability info */
4664         for (i = 0; i < sizeof(ifmgd->s1g_capa.capab_info); i++) {
4665                 u8 mask = ifmgd->s1g_capa_mask.capab_info[i];
4666
4667                 s1g_capab.capab_info[i] &= ~mask;
4668                 s1g_capab.capab_info[i] |= ifmgd->s1g_capa.capab_info[i] & mask;
4669         }
4670
4671         /* then MCS and NSS set */
4672         for (i = 0; i < sizeof(ifmgd->s1g_capa.supp_mcs_nss); i++) {
4673                 u8 mask = ifmgd->s1g_capa_mask.supp_mcs_nss[i];
4674
4675                 s1g_capab.supp_mcs_nss[i] &= ~mask;
4676                 s1g_capab.supp_mcs_nss[i] |=
4677                         ifmgd->s1g_capa.supp_mcs_nss[i] & mask;
4678         }
4679
4680         pos = skb_put(skb, 2 + sizeof(s1g_capab));
4681         *pos++ = WLAN_EID_S1G_CAPABILITIES;
4682         *pos++ = sizeof(s1g_capab);
4683
4684         memcpy(pos, &s1g_capab, sizeof(s1g_capab));
4685 }
4686
4687 void ieee80211_add_aid_request_ie(struct ieee80211_sub_if_data *sdata,
4688                                   struct sk_buff *skb)
4689 {
4690         u8 *pos = skb_put(skb, 3);
4691
4692         *pos++ = WLAN_EID_AID_REQUEST;
4693         *pos++ = 1;
4694         *pos++ = 0;
4695 }
4696
4697 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo)
4698 {
4699         *buf++ = WLAN_EID_VENDOR_SPECIFIC;
4700         *buf++ = 7; /* len */
4701         *buf++ = 0x00; /* Microsoft OUI 00:50:F2 */
4702         *buf++ = 0x50;
4703         *buf++ = 0xf2;
4704         *buf++ = 2; /* WME */
4705         *buf++ = 0; /* WME info */
4706         *buf++ = 1; /* WME ver */
4707         *buf++ = qosinfo; /* U-APSD no in use */
4708
4709         return buf;
4710 }
4711
4712 void ieee80211_txq_get_depth(struct ieee80211_txq *txq,
4713                              unsigned long *frame_cnt,
4714                              unsigned long *byte_cnt)
4715 {
4716         struct txq_info *txqi = to_txq_info(txq);
4717         u32 frag_cnt = 0, frag_bytes = 0;
4718         struct sk_buff *skb;
4719
4720         skb_queue_walk(&txqi->frags, skb) {
4721                 frag_cnt++;
4722                 frag_bytes += skb->len;
4723         }
4724
4725         if (frame_cnt)
4726                 *frame_cnt = txqi->tin.backlog_packets + frag_cnt;
4727
4728         if (byte_cnt)
4729                 *byte_cnt = txqi->tin.backlog_bytes + frag_bytes;
4730 }
4731 EXPORT_SYMBOL(ieee80211_txq_get_depth);
4732
4733 const u8 ieee80211_ac_to_qos_mask[IEEE80211_NUM_ACS] = {
4734         IEEE80211_WMM_IE_STA_QOSINFO_AC_VO,
4735         IEEE80211_WMM_IE_STA_QOSINFO_AC_VI,
4736         IEEE80211_WMM_IE_STA_QOSINFO_AC_BE,
4737         IEEE80211_WMM_IE_STA_QOSINFO_AC_BK
4738 };
4739
4740 u16 ieee80211_encode_usf(int listen_interval)
4741 {
4742         static const int listen_int_usf[] = { 1, 10, 1000, 10000 };
4743         u16 ui, usf = 0;
4744
4745         /* find greatest USF */
4746         while (usf < IEEE80211_MAX_USF) {
4747                 if (listen_interval % listen_int_usf[usf + 1])
4748                         break;
4749                 usf += 1;
4750         }
4751         ui = listen_interval / listen_int_usf[usf];
4752
4753         /* error if there is a remainder. Should've been checked by user */
4754         WARN_ON_ONCE(ui > IEEE80211_MAX_UI);
4755         listen_interval = FIELD_PREP(LISTEN_INT_USF, usf) |
4756                           FIELD_PREP(LISTEN_INT_UI, ui);
4757
4758         return (u16) listen_interval;
4759 }
4760
4761 u8 ieee80211_ie_len_eht_cap(struct ieee80211_sub_if_data *sdata, u8 iftype)
4762 {
4763         const struct ieee80211_sta_he_cap *he_cap;
4764         const struct ieee80211_sta_eht_cap *eht_cap;
4765         struct ieee80211_supported_band *sband;
4766         bool is_ap;
4767         u8 n;
4768
4769         sband = ieee80211_get_sband(sdata);
4770         if (!sband)
4771                 return 0;
4772
4773         he_cap = ieee80211_get_he_iftype_cap(sband, iftype);
4774         eht_cap = ieee80211_get_eht_iftype_cap(sband, iftype);
4775         if (!he_cap || !eht_cap)
4776                 return 0;
4777
4778         is_ap = iftype == NL80211_IFTYPE_AP ||
4779                 iftype == NL80211_IFTYPE_P2P_GO;
4780
4781         n = ieee80211_eht_mcs_nss_size(&he_cap->he_cap_elem,
4782                                        &eht_cap->eht_cap_elem,
4783                                        is_ap);
4784         return 2 + 1 +
4785                sizeof(eht_cap->eht_cap_elem) + n +
4786                ieee80211_eht_ppe_size(eht_cap->eht_ppe_thres[0],
4787                                       eht_cap->eht_cap_elem.phy_cap_info);
4788         return 0;
4789 }
4790
4791 u8 *ieee80211_ie_build_eht_cap(u8 *pos,
4792                                const struct ieee80211_sta_he_cap *he_cap,
4793                                const struct ieee80211_sta_eht_cap *eht_cap,
4794                                u8 *end,
4795                                bool for_ap)
4796 {
4797         u8 mcs_nss_len, ppet_len;
4798         u8 ie_len;
4799         u8 *orig_pos = pos;
4800
4801         /* Make sure we have place for the IE */
4802         if (!he_cap || !eht_cap)
4803                 return orig_pos;
4804
4805         mcs_nss_len = ieee80211_eht_mcs_nss_size(&he_cap->he_cap_elem,
4806                                                  &eht_cap->eht_cap_elem,
4807                                                  for_ap);
4808         ppet_len = ieee80211_eht_ppe_size(eht_cap->eht_ppe_thres[0],
4809                                           eht_cap->eht_cap_elem.phy_cap_info);
4810
4811         ie_len = 2 + 1 + sizeof(eht_cap->eht_cap_elem) + mcs_nss_len + ppet_len;
4812         if ((end - pos) < ie_len)
4813                 return orig_pos;
4814
4815         *pos++ = WLAN_EID_EXTENSION;
4816         *pos++ = ie_len - 2;
4817         *pos++ = WLAN_EID_EXT_EHT_CAPABILITY;
4818
4819         /* Fixed data */
4820         memcpy(pos, &eht_cap->eht_cap_elem, sizeof(eht_cap->eht_cap_elem));
4821         pos += sizeof(eht_cap->eht_cap_elem);
4822
4823         memcpy(pos, &eht_cap->eht_mcs_nss_supp, mcs_nss_len);
4824         pos += mcs_nss_len;
4825
4826         if (ppet_len) {
4827                 memcpy(pos, &eht_cap->eht_ppe_thres, ppet_len);
4828                 pos += ppet_len;
4829         }
4830
4831         return pos;
4832 }
4833
4834 void ieee80211_fragment_element(struct sk_buff *skb, u8 *len_pos)
4835 {
4836         unsigned int elem_len;
4837
4838         if (!len_pos)
4839                 return;
4840
4841         elem_len = skb->data + skb->len - len_pos - 1;
4842
4843         while (elem_len > 255) {
4844                 /* this one is 255 */
4845                 *len_pos = 255;
4846                 /* remaining data gets smaller */
4847                 elem_len -= 255;
4848                 /* make space for the fragment ID/len in SKB */
4849                 skb_put(skb, 2);
4850                 /* shift back the remaining data to place fragment ID/len */
4851                 memmove(len_pos + 255 + 3, len_pos + 255 + 1, elem_len);
4852                 /* place the fragment ID */
4853                 len_pos += 255 + 1;
4854                 *len_pos = WLAN_EID_FRAGMENT;
4855                 /* and point to fragment length to update later */
4856                 len_pos++;
4857         }
4858
4859         *len_pos = elem_len;
4860 }