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cfg80211: Support hidden AP discovery over 6GHz band
[linux-block.git] / net / mac80211 / util.c
CommitLineData
d2912cb1 1// SPDX-License-Identifier: GPL-2.0-only
c2d1560a
JB		 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>
d98ad83e 7 * Copyright 2013-2014 Intel Mobile Communications GmbH
da6a4352 8 * Copyright (C) 2015-2017 Intel Deutschland GmbH
c0058df7 9 * Copyright (C) 2018-2020 Intel Corporation
c2d1560a 10 *
c2d1560a
JB		 11 * utilities for mac80211
12 */
13
14#include <net/mac80211.h>
15#include <linux/netdevice.h>
bc3b2d7f 16#include <linux/export.h>
c2d1560a
JB		 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>
c2d1560a 22#include <linux/bitmap.h>
dd76986b 23#include <linux/crc32.h>
881d966b 24#include <net/net_namespace.h>
c2d1560a 25#include <net/cfg80211.h>
dabeb344 26#include <net/rtnetlink.h>
c2d1560a
JB		 27
28#include "ieee80211_i.h"
24487981 29#include "driver-ops.h"
2c8dccc7 30#include "rate.h"
ee385855 31#include "mesh.h"
c2d1560a 32#include "wme.h"
f2753ddb 33#include "led.h"
fffd0934 34#include "wep.h"
c2d1560a
JB		 35
36/* privid for wiphys to determine whether they belong to us or not */
8a47cea7 37const void *const mac80211_wiphy_privid = &mac80211_wiphy_privid;
c2d1560a 38
9a95371a
LR		 39struct ieee80211_hw *wiphy_to_ieee80211_hw(struct wiphy *wiphy)
40{
41 struct ieee80211_local *local;
9a95371a
LR		 42
43 local = wiphy_priv(wiphy);
44 return &local->hw;
45}
46EXPORT_SYMBOL(wiphy_to_ieee80211_hw);
c2d1560a 47
09a740ce
TP		 48u8 *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}
98EXPORT_SYMBOL(ieee80211_get_bssid);
99
5cf121c3 100void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx)
c2d1560a 101{
252b86c4 102 struct sk_buff *skb;
2de8e0d9
JB		 103 struct ieee80211_hdr *hdr;
104
252b86c4 105 skb_queue_walk(&tx->skbs, skb) {
2de8e0d9
JB		 106 hdr = (struct ieee80211_hdr *) skb->data;
107 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
252b86c4 108 }
c2d1560a
JB		 109}
110
57fbcce3 111int ieee80211_frame_duration(enum nl80211_band band, size_t len,
438b61b7
SW		 112 int rate, int erp, int short_preamble,
113 int shift)
c2d1560a
JB		 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.
438b61b7
SW		 124 *
125 * shift may be 2 for 5 MHz channels or 1 for 10 MHz channels, and
126 * is assumed to be 0 otherwise.
c2d1560a
JB		 127 */
128
57fbcce3 129 if (band == NL80211_BAND_5GHZ || erp) {
c2d1560a
JB		 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
438b61b7 139 * 802.11a - 18.5.2: aSIFSTime = 16 usec
c2d1560a
JB		 140 * 802.11g - 19.8.4: aSIFSTime = 10 usec +
141 * signal ext = 6 usec
142 */
c2d1560a 143 dur = 16; /* SIFS + signal ext */
438b61b7
SW		 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 */
438b61b7
SW		 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;
2103dec1
SW		 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 */
c2d1560a
JB		 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 */
32bfd35d
JB		 179__le16 ieee80211_generic_frame_duration(struct ieee80211_hw *hw,
180 struct ieee80211_vif *vif,
57fbcce3 181 enum nl80211_band band,
8318d78a
JB		 182 size_t frame_len,
183 struct ieee80211_rate *rate)
c2d1560a 184{
25d834e1 185 struct ieee80211_sub_if_data *sdata;
c2d1560a 186 u16 dur;
438b61b7 187 int erp, shift = 0;
25d834e1 188 bool short_preamble = false;
c2d1560a 189
8318d78a 190 erp = 0;
25d834e1
JB		 191 if (vif) {
192 sdata = vif_to_sdata(vif);
bda3933a 193 short_preamble = sdata->vif.bss_conf.use_short_preamble;
25d834e1
JB		 194 if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE)
195 erp = rate->flags & IEEE80211_RATE_ERP_G;
438b61b7 196 shift = ieee80211_vif_get_shift(vif);
25d834e1 197 }
8318d78a 198
4ee73f33 199 dur = ieee80211_frame_duration(band, frame_len, rate->bitrate, erp,
438b61b7 200 short_preamble, shift);
c2d1560a
JB		 201
202 return cpu_to_le16(dur);
203}
204EXPORT_SYMBOL(ieee80211_generic_frame_duration);
205
32bfd35d
JB		 206__le16 ieee80211_rts_duration(struct ieee80211_hw *hw,
207 struct ieee80211_vif *vif, size_t frame_len,
e039fa4a 208 const struct ieee80211_tx_info *frame_txctl)
c2d1560a
JB		 209{
210 struct ieee80211_local *local = hw_to_local(hw);
211 struct ieee80211_rate *rate;
25d834e1 212 struct ieee80211_sub_if_data *sdata;
471b3efd 213 bool short_preamble;
2103dec1 214 int erp, shift = 0, bitrate;
c2d1560a 215 u16 dur;
2e92e6f2
JB		 216 struct ieee80211_supported_band *sband;
217
4ee73f33 218 sband = local->hw.wiphy->bands[frame_txctl->band];
c2d1560a 219
25d834e1 220 short_preamble = false;
7e9ed188 221
e039fa4a 222 rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx];
8318d78a
JB		 223
224 erp = 0;
25d834e1
JB		 225 if (vif) {
226 sdata = vif_to_sdata(vif);
bda3933a 227 short_preamble = sdata->vif.bss_conf.use_short_preamble;
25d834e1
JB		 228 if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE)
229 erp = rate->flags & IEEE80211_RATE_ERP_G;
438b61b7 230 shift = ieee80211_vif_get_shift(vif);
25d834e1 231 }
c2d1560a 232
2103dec1
SW		 233 bitrate = DIV_ROUND_UP(rate->bitrate, 1 << shift);
234
c2d1560a 235 /* CTS duration */
2103dec1 236 dur = ieee80211_frame_duration(sband->band, 10, bitrate,
438b61b7 237 erp, short_preamble, shift);
c2d1560a 238 /* Data frame duration */
2103dec1 239 dur += ieee80211_frame_duration(sband->band, frame_len, bitrate,
438b61b7 240 erp, short_preamble, shift);
c2d1560a 241 /* ACK duration */
2103dec1 242 dur += ieee80211_frame_duration(sband->band, 10, bitrate,
438b61b7 243 erp, short_preamble, shift);
c2d1560a
JB		 244
245 return cpu_to_le16(dur);
246}
247EXPORT_SYMBOL(ieee80211_rts_duration);
248
32bfd35d
JB		 249__le16 ieee80211_ctstoself_duration(struct ieee80211_hw *hw,
250 struct ieee80211_vif *vif,
c2d1560a 251 size_t frame_len,
e039fa4a 252 const struct ieee80211_tx_info *frame_txctl)
c2d1560a
JB		 253{
254 struct ieee80211_local *local = hw_to_local(hw);
255 struct ieee80211_rate *rate;
25d834e1 256 struct ieee80211_sub_if_data *sdata;
471b3efd 257 bool short_preamble;
2103dec1 258 int erp, shift = 0, bitrate;
c2d1560a 259 u16 dur;
2e92e6f2
JB		 260 struct ieee80211_supported_band *sband;
261
4ee73f33 262 sband = local->hw.wiphy->bands[frame_txctl->band];
c2d1560a 263
25d834e1 264 short_preamble = false;
7e9ed188 265
e039fa4a 266 rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx];
8318d78a 267 erp = 0;
25d834e1
JB		 268 if (vif) {
269 sdata = vif_to_sdata(vif);
bda3933a 270 short_preamble = sdata->vif.bss_conf.use_short_preamble;
25d834e1
JB		 271 if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE)
272 erp = rate->flags & IEEE80211_RATE_ERP_G;
438b61b7 273 shift = ieee80211_vif_get_shift(vif);
25d834e1 274 }
c2d1560a 275
2103dec1
SW		 276 bitrate = DIV_ROUND_UP(rate->bitrate, 1 << shift);
277
c2d1560a 278 /* Data frame duration */
2103dec1 279 dur = ieee80211_frame_duration(sband->band, frame_len, bitrate,
438b61b7 280 erp, short_preamble, shift);
e039fa4a 281 if (!(frame_txctl->flags & IEEE80211_TX_CTL_NO_ACK)) {
c2d1560a 282 /* ACK duration */
2103dec1 283 dur += ieee80211_frame_duration(sband->band, 10, bitrate,
438b61b7 284 erp, short_preamble, shift);
c2d1560a
JB		 285 }
286
287 return cpu_to_le16(dur);
288}
289EXPORT_SYMBOL(ieee80211_ctstoself_duration);
290
21a5d4c3
MP		 291static 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
d8dec42b
JB		 301 local_bh_disable();
302 spin_lock(&fq->lock);
21a5d4c3
MP		 303
304 if (sdata->vif.type == NL80211_IFTYPE_AP)
305 ps = &sdata->bss->ps;
306
307 sdata->vif.txqs_stopped[ac] = false;
308
309 list_for_each_entry_rcu(sta, &local->sta_list, list) {
310 if (sdata != sta->sdata)
311 continue;
312
313 for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) {
314 struct ieee80211_txq *txq = sta->sta.txq[i];
315
a5ae3264
ES		 316 if (!txq)
317 continue;
318
21a5d4c3
MP		 319 txqi = to_txq_info(txq);
320
321 if (ac != txq->ac)
322 continue;
323
324 if (!test_and_clear_bit(IEEE80211_TXQ_STOP_NETIF_TX,
325 &txqi->flags))
326 continue;
327
d8dec42b 328 spin_unlock(&fq->lock);
21a5d4c3 329 drv_wake_tx_queue(local, txqi);
d8dec42b 330 spin_lock(&fq->lock);
21a5d4c3
MP		 331 }
332 }
333
334 if (!vif->txq)
335 goto out;
336
337 txqi = to_txq_info(vif->txq);
338
339 if (!test_and_clear_bit(IEEE80211_TXQ_STOP_NETIF_TX, &txqi->flags) ||
340 (ps && atomic_read(&ps->num_sta_ps)) || ac != vif->txq->ac)
341 goto out;
342
d8dec42b 343 spin_unlock(&fq->lock);
21a5d4c3
MP		 344
345 drv_wake_tx_queue(local, txqi);
d8dec42b 346 local_bh_enable();
21a5d4c3
MP		 347 return;
348out:
d8dec42b
JB		 349 spin_unlock(&fq->lock);
350 local_bh_enable();
21a5d4c3
MP		 351}
352
f6c7f03f
EG		 353static void
354__releases(&local->queue_stop_reason_lock)
355__acquires(&local->queue_stop_reason_lock)
356_ieee80211_wake_txqs(struct ieee80211_local *local, unsigned long *flags)
21a5d4c3 357{
21a5d4c3
MP		 358 struct ieee80211_sub_if_data *sdata;
359 int n_acs = IEEE80211_NUM_ACS;
21a5d4c3
MP		 360 int i;
361
362 rcu_read_lock();
21a5d4c3
MP		 363
364 if (local->hw.queues < IEEE80211_NUM_ACS)
365 n_acs = 1;
366
367 for (i = 0; i < local->hw.queues; i++) {
368 if (local->queue_stop_reasons[i])
369 continue;
370
f6c7f03f 371 spin_unlock_irqrestore(&local->queue_stop_reason_lock, *flags);
21a5d4c3
MP		 372 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
373 int ac;
374
375 for (ac = 0; ac < n_acs; ac++) {
376 int ac_queue = sdata->vif.hw_queue[ac];
377
378 if (ac_queue == i ||
379 sdata->vif.cab_queue == i)
380 __ieee80211_wake_txqs(sdata, ac);
381 }
382 }
f6c7f03f 383 spin_lock_irqsave(&local->queue_stop_reason_lock, *flags);
21a5d4c3
MP		 384 }
385
21a5d4c3
MP		 386 rcu_read_unlock();
387}
388
da1cad73 389void ieee80211_wake_txqs(struct tasklet_struct *t)
f6c7f03f 390{
da1cad73
AP		 391 struct ieee80211_local *local = from_tasklet(local, t,
392 wake_txqs_tasklet);
f6c7f03f
EG		 393 unsigned long flags;
394
395 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
396 _ieee80211_wake_txqs(local, &flags);
397 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
398}
399
3a25a8c8
JB		 400void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue)
401{
402 struct ieee80211_sub_if_data *sdata;
a6f38ac3
JB		 403 int n_acs = IEEE80211_NUM_ACS;
404
80a83cfc
MK		 405 if (local->ops->wake_tx_queue)
406 return;
407
a6f38ac3
JB		 408 if (local->hw.queues < IEEE80211_NUM_ACS)
409 n_acs = 1;
3a25a8c8
JB		 410
411 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
412 int ac;
413
f142c6b9
JB		 414 if (!sdata->dev)
415 continue;
416
3a25a8c8
JB		 417 if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE &&
418 local->queue_stop_reasons[sdata->vif.cab_queue] != 0)
419 continue;
420
a6f38ac3 421 for (ac = 0; ac < n_acs; ac++) {
3a25a8c8
JB		 422 int ac_queue = sdata->vif.hw_queue[ac];
423
424 if (ac_queue == queue ||
425 (sdata->vif.cab_queue == queue &&
426 local->queue_stop_reasons[ac_queue] == 0 &&
427 skb_queue_empty(&local->pending[ac_queue])))
428 netif_wake_subqueue(sdata->dev, ac);
429 }
430 }
431}
432
ce7c9111 433static void __ieee80211_wake_queue(struct ieee80211_hw *hw, int queue,
cca07b00 434 enum queue_stop_reason reason,
f6c7f03f
EG		 435 bool refcounted,
436 unsigned long *flags)
c2d1560a
JB		 437{
438 struct ieee80211_local *local = hw_to_local(hw);
439
b5878a2d
JB		 440 trace_wake_queue(local, queue, reason);
441
e4e72fb4
JB		 442 if (WARN_ON(queue >= hw->queues))
443 return;
ce7c9111 444
ada15125
JB		 445 if (!test_bit(reason, &local->queue_stop_reasons[queue]))
446 return;
447
856142cd 448 if (!refcounted) {
cca07b00 449 local->q_stop_reasons[queue][reason] = 0;
856142cd 450 } else {
cca07b00 451 local->q_stop_reasons[queue][reason]--;
856142cd
JB		 452 if (WARN_ON(local->q_stop_reasons[queue][reason] < 0))
453 local->q_stop_reasons[queue][reason] = 0;
454 }
cca07b00
LC		 455
456 if (local->q_stop_reasons[queue][reason] == 0)
457 __clear_bit(reason, &local->queue_stop_reasons[queue]);
96f5e66e
JB		 458
459 if (local->queue_stop_reasons[queue] != 0)
460 /* someone still has this queue stopped */
461 return;
462
7236fe29
JB		 463 if (skb_queue_empty(&local->pending[queue])) {
464 rcu_read_lock();
3a25a8c8 465 ieee80211_propagate_queue_wake(local, queue);
7236fe29
JB		 466 rcu_read_unlock();
467 } else
3b8d81e0 468 tasklet_schedule(&local->tx_pending_tasklet);
21a5d4c3 469
f6c7f03f
EG		 470 /*
471 * Calling _ieee80211_wake_txqs here can be a problem because it may
472 * release queue_stop_reason_lock which has been taken by
473 * __ieee80211_wake_queue's caller. It is certainly not very nice to
474 * release someone's lock, but it is fine because all the callers of
475 * __ieee80211_wake_queue call it right before releasing the lock.
476 */
477 if (local->ops->wake_tx_queue) {
478 if (reason == IEEE80211_QUEUE_STOP_REASON_DRIVER)
479 tasklet_schedule(&local->wake_txqs_tasklet);
480 else
481 _ieee80211_wake_txqs(local, flags);
482 }
c2d1560a 483}
ce7c9111 484
96f5e66e 485void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
cca07b00
LC		 486 enum queue_stop_reason reason,
487 bool refcounted)
ce7c9111
KV		 488{
489 struct ieee80211_local *local = hw_to_local(hw);
490 unsigned long flags;
491
492 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
f6c7f03f 493 __ieee80211_wake_queue(hw, queue, reason, refcounted, &flags);
ce7c9111
KV		 494 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
495}
496
497void ieee80211_wake_queue(struct ieee80211_hw *hw, int queue)
498{
499 ieee80211_wake_queue_by_reason(hw, queue,
cca07b00
LC		 500 IEEE80211_QUEUE_STOP_REASON_DRIVER,
501 false);
ce7c9111 502}
c2d1560a
JB		 503EXPORT_SYMBOL(ieee80211_wake_queue);
504
ce7c9111 505static void __ieee80211_stop_queue(struct ieee80211_hw *hw, int queue,
cca07b00
LC		 506 enum queue_stop_reason reason,
507 bool refcounted)
c2d1560a
JB		 508{
509 struct ieee80211_local *local = hw_to_local(hw);
cf0277e7 510 struct ieee80211_sub_if_data *sdata;
a6f38ac3 511 int n_acs = IEEE80211_NUM_ACS;
c2d1560a 512
b5878a2d
JB		 513 trace_stop_queue(local, queue, reason);
514
e4e72fb4
JB		 515 if (WARN_ON(queue >= hw->queues))
516 return;
96f5e66e 517
cca07b00
LC		 518 if (!refcounted)
519 local->q_stop_reasons[queue][reason] = 1;
520 else
521 local->q_stop_reasons[queue][reason]++;
ada15125 522
cca07b00
LC		 523 if (__test_and_set_bit(reason, &local->queue_stop_reasons[queue]))
524 return;
cf0277e7 525
a6f38ac3
JB		 526 if (local->hw.queues < IEEE80211_NUM_ACS)
527 n_acs = 1;
528
cf0277e7 529 rcu_read_lock();
3a25a8c8
JB		 530 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
531 int ac;
532
f142c6b9
JB		 533 if (!sdata->dev)
534 continue;
535
a6f38ac3 536 for (ac = 0; ac < n_acs; ac++) {
3a25a8c8 537 if (sdata->vif.hw_queue[ac] == queue ||
21a5d4c3
MP		 538 sdata->vif.cab_queue == queue) {
539 if (!local->ops->wake_tx_queue) {
540 netif_stop_subqueue(sdata->dev, ac);
541 continue;
542 }
543 spin_lock(&local->fq.lock);
544 sdata->vif.txqs_stopped[ac] = true;
545 spin_unlock(&local->fq.lock);
546 }
3a25a8c8
JB		 547 }
548 }
cf0277e7 549 rcu_read_unlock();
c2d1560a 550}
ce7c9111 551
96f5e66e 552void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
cca07b00
LC		 553 enum queue_stop_reason reason,
554 bool refcounted)
ce7c9111
KV		 555{
556 struct ieee80211_local *local = hw_to_local(hw);
557 unsigned long flags;
558
559 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
cca07b00 560 __ieee80211_stop_queue(hw, queue, reason, refcounted);
ce7c9111
KV		 561 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
562}
563
564void ieee80211_stop_queue(struct ieee80211_hw *hw, int queue)
565{
566 ieee80211_stop_queue_by_reason(hw, queue,
cca07b00
LC		 567 IEEE80211_QUEUE_STOP_REASON_DRIVER,
568 false);
ce7c9111 569}
c2d1560a
JB		 570EXPORT_SYMBOL(ieee80211_stop_queue);
571
8f77f384
JB		 572void ieee80211_add_pending_skb(struct ieee80211_local *local,
573 struct sk_buff *skb)
574{
575 struct ieee80211_hw *hw = &local->hw;
576 unsigned long flags;
a7bc376c 577 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
3a25a8c8 578 int queue = info->hw_queue;
a7bc376c
JB		 579
580 if (WARN_ON(!info->control.vif)) {
d4fa14cd 581 ieee80211_free_txskb(&local->hw, skb);
a7bc376c
JB		 582 return;
583 }
8f77f384
JB		 584
585 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
cca07b00
LC		 586 __ieee80211_stop_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
587 false);
3b8d81e0 588 __skb_queue_tail(&local->pending[queue], skb);
cca07b00 589 __ieee80211_wake_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
f6c7f03f 590 false, &flags);
8f77f384
JB		 591 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
592}
593
e3685e03
JB		 594void ieee80211_add_pending_skbs(struct ieee80211_local *local,
595 struct sk_buff_head *skbs)
8f77f384
JB		 596{
597 struct ieee80211_hw *hw = &local->hw;
598 struct sk_buff *skb;
599 unsigned long flags;
b0b97a8a 600 int queue, i;
8f77f384
JB		 601
602 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
8f77f384 603 while ((skb = skb_dequeue(skbs))) {
a7bc376c
JB		 604 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
605
606 if (WARN_ON(!info->control.vif)) {
d4fa14cd 607 ieee80211_free_txskb(&local->hw, skb);
a7bc376c
JB		 608 continue;
609 }
610
3a25a8c8 611 queue = info->hw_queue;
4644ae89
JB		 612
613 __ieee80211_stop_queue(hw, queue,
cca07b00
LC		 614 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
615 false);
4644ae89 616
3b8d81e0 617 __skb_queue_tail(&local->pending[queue], skb);
8f77f384
JB		 618 }
619
3b8d81e0 620 for (i = 0; i < hw->queues; i++)
8f77f384 621 __ieee80211_wake_queue(hw, i,
cca07b00 622 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
f6c7f03f 623 false, &flags);
8f77f384 624 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
8f77f384
JB		 625}
626
ce7c9111 627void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
445ea4e8 628 unsigned long queues,
cca07b00
LC		 629 enum queue_stop_reason reason,
630 bool refcounted)
c2d1560a 631{
ce7c9111
KV		 632 struct ieee80211_local *local = hw_to_local(hw);
633 unsigned long flags;
c2d1560a
JB		 634 int i;
635
ce7c9111
KV		 636 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
637
445ea4e8 638 for_each_set_bit(i, &queues, hw->queues)
cca07b00 639 __ieee80211_stop_queue(hw, i, reason, refcounted);
ce7c9111
KV		 640
641 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
642}
643
644void ieee80211_stop_queues(struct ieee80211_hw *hw)
645{
445ea4e8 646 ieee80211_stop_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
cca07b00
LC		 647 IEEE80211_QUEUE_STOP_REASON_DRIVER,
648 false);
c2d1560a
JB		 649}
650EXPORT_SYMBOL(ieee80211_stop_queues);
651
92ab8535
TW		 652int ieee80211_queue_stopped(struct ieee80211_hw *hw, int queue)
653{
654 struct ieee80211_local *local = hw_to_local(hw);
3b8d81e0
JB		 655 unsigned long flags;
656 int ret;
96f5e66e 657
e4e72fb4
JB		 658 if (WARN_ON(queue >= hw->queues))
659 return true;
96f5e66e 660
3b8d81e0 661 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
2419ea14
TP		 662 ret = test_bit(IEEE80211_QUEUE_STOP_REASON_DRIVER,
663 &local->queue_stop_reasons[queue]);
3b8d81e0
JB		 664 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
665 return ret;
92ab8535
TW		 666}
667EXPORT_SYMBOL(ieee80211_queue_stopped);
668
ce7c9111 669void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
445ea4e8 670 unsigned long queues,
cca07b00
LC		 671 enum queue_stop_reason reason,
672 bool refcounted)
c2d1560a 673{
ce7c9111
KV		 674 struct ieee80211_local *local = hw_to_local(hw);
675 unsigned long flags;
c2d1560a
JB		 676 int i;
677
ce7c9111
KV		 678 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
679
445ea4e8 680 for_each_set_bit(i, &queues, hw->queues)
f6c7f03f 681 __ieee80211_wake_queue(hw, i, reason, refcounted, &flags);
ce7c9111
KV		 682
683 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
684}
685
686void ieee80211_wake_queues(struct ieee80211_hw *hw)
687{
445ea4e8 688 ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
cca07b00
LC		 689 IEEE80211_QUEUE_STOP_REASON_DRIVER,
690 false);
c2d1560a
JB		 691}
692EXPORT_SYMBOL(ieee80211_wake_queues);
dabeb344 693
26da23b6
LC		 694static unsigned int
695ieee80211_get_vif_queues(struct ieee80211_local *local,
696 struct ieee80211_sub_if_data *sdata)
39ecc01d 697{
26da23b6 698 unsigned int queues;
39ecc01d 699
30686bf7 700 if (sdata && ieee80211_hw_check(&local->hw, QUEUE_CONTROL)) {
39ecc01d
JB		 701 int ac;
702
703 queues = 0;
704
705 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
706 queues |= BIT(sdata->vif.hw_queue[ac]);
707 if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE)
708 queues |= BIT(sdata->vif.cab_queue);
709 } else {
710 /* all queues */
711 queues = BIT(local->hw.queues) - 1;
712 }
713
26da23b6
LC		 714 return queues;
715}
716
4f9610d5
LK		 717void __ieee80211_flush_queues(struct ieee80211_local *local,
718 struct ieee80211_sub_if_data *sdata,
3b24f4c6 719 unsigned int queues, bool drop)
26da23b6 720{
26da23b6
LC		 721 if (!local->ops->flush)
722 return;
723
4f9610d5
LK		 724 /*
725 * If no queue was set, or if the HW doesn't support
726 * IEEE80211_HW_QUEUE_CONTROL - flush all queues
727 */
30686bf7 728 if (!queues || !ieee80211_hw_check(&local->hw, QUEUE_CONTROL))
4f9610d5 729 queues = ieee80211_get_vif_queues(local, sdata);
26da23b6 730
59f48fe2 731 ieee80211_stop_queues_by_reason(&local->hw, queues,
cca07b00
LC		 732 IEEE80211_QUEUE_STOP_REASON_FLUSH,
733 false);
445ea4e8 734
3b24f4c6 735 drv_flush(local, sdata, queues, drop);
445ea4e8 736
59f48fe2 737 ieee80211_wake_queues_by_reason(&local->hw, queues,
cca07b00
LC		 738 IEEE80211_QUEUE_STOP_REASON_FLUSH,
739 false);
39ecc01d
JB		 740}
741
4f9610d5 742void ieee80211_flush_queues(struct ieee80211_local *local,
3b24f4c6 743 struct ieee80211_sub_if_data *sdata, bool drop)
4f9610d5 744{
3b24f4c6 745 __ieee80211_flush_queues(local, sdata, 0, drop);
4f9610d5
LK		 746}
747
26da23b6
LC		 748void ieee80211_stop_vif_queues(struct ieee80211_local *local,
749 struct ieee80211_sub_if_data *sdata,
750 enum queue_stop_reason reason)
751{
752 ieee80211_stop_queues_by_reason(&local->hw,
753 ieee80211_get_vif_queues(local, sdata),
754 reason, true);
755}
756
757void ieee80211_wake_vif_queues(struct ieee80211_local *local,
758 struct ieee80211_sub_if_data *sdata,
759 enum queue_stop_reason reason)
760{
761 ieee80211_wake_queues_by_reason(&local->hw,
762 ieee80211_get_vif_queues(local, sdata),
763 reason, true);
764}
765
3384d757
AN		 766static void __iterate_interfaces(struct ieee80211_local *local,
767 u32 iter_flags,
768 void (*iterator)(void *data, u8 *mac,
769 struct ieee80211_vif *vif),
770 void *data)
dabeb344 771{
dabeb344 772 struct ieee80211_sub_if_data *sdata;
3384d757 773 bool active_only = iter_flags & IEEE80211_IFACE_ITER_ACTIVE;
dabeb344 774
c7c71066 775 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
2f561feb 776 switch (sdata->vif.type) {
05c914fe 777 case NL80211_IFTYPE_MONITOR:
d8212184 778 if (!(sdata->u.mntr.flags & MONITOR_FLAG_ACTIVE))
31eba5bc
FF		 779 continue;
780 break;
05c914fe 781 case NL80211_IFTYPE_AP_VLAN:
2f561feb 782 continue;
2ca27bcf 783 default:
2f561feb
ID		 784 break;
785 }
8b2c9824 786 if (!(iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL) &&
3384d757 787 active_only && !(sdata->flags & IEEE80211_SDATA_IN_DRIVER))
8b2c9824 788 continue;
265a0708
BG		 789 if ((iter_flags & IEEE80211_IFACE_SKIP_SDATA_NOT_IN_DRIVER) &&
790 !(sdata->flags & IEEE80211_SDATA_IN_DRIVER))
791 continue;
3384d757 792 if (ieee80211_sdata_running(sdata) || !active_only)
47846c9b 793 iterator(data, sdata->vif.addr,
2f561feb
ID		 794 &sdata->vif);
795 }
796
c7c71066
JB		 797 sdata = rcu_dereference_check(local->monitor_sdata,
798 lockdep_is_held(&local->iflist_mtx) ||
799 lockdep_rtnl_is_held());
8b2c9824 800 if (sdata &&
3384d757 801 (iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL || !active_only ||
8b2c9824 802 sdata->flags & IEEE80211_SDATA_IN_DRIVER))
685fb72b 803 iterator(data, sdata->vif.addr, &sdata->vif);
c7c71066 804}
685fb72b 805
3384d757 806void ieee80211_iterate_interfaces(
c7c71066
JB		 807 struct ieee80211_hw *hw, u32 iter_flags,
808 void (*iterator)(void *data, u8 *mac,
809 struct ieee80211_vif *vif),
810 void *data)
811{
812 struct ieee80211_local *local = hw_to_local(hw);
813
814 mutex_lock(&local->iflist_mtx);
3384d757 815 __iterate_interfaces(local, iter_flags, iterator, data);
c771c9d8 816 mutex_unlock(&local->iflist_mtx);
2f561feb 817}
3384d757 818EXPORT_SYMBOL_GPL(ieee80211_iterate_interfaces);
2f561feb
ID		 819
820void ieee80211_iterate_active_interfaces_atomic(
8b2c9824 821 struct ieee80211_hw *hw, u32 iter_flags,
2f561feb
ID		 822 void (*iterator)(void *data, u8 *mac,
823 struct ieee80211_vif *vif),
824 void *data)
825{
826 struct ieee80211_local *local = hw_to_local(hw);
2f561feb 827
e38bad47 828 rcu_read_lock();
3384d757
AN		 829 __iterate_interfaces(local, iter_flags | IEEE80211_IFACE_ITER_ACTIVE,
830 iterator, data);
c7c71066
JB		 831 rcu_read_unlock();
832}
833EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_atomic);
dabeb344 834
a05829a7 835void ieee80211_iterate_active_interfaces_mtx(
c7c71066
JB		 836 struct ieee80211_hw *hw, u32 iter_flags,
837 void (*iterator)(void *data, u8 *mac,
838 struct ieee80211_vif *vif),
839 void *data)
840{
841 struct ieee80211_local *local = hw_to_local(hw);
e38bad47 842
a05829a7 843 lockdep_assert_wiphy(hw->wiphy);
685fb72b 844
3384d757
AN		 845 __iterate_interfaces(local, iter_flags | IEEE80211_IFACE_ITER_ACTIVE,
846 iterator, data);
dabeb344 847}
a05829a7 848EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_mtx);
37ffc8da 849
0fc1e049
AN		 850static void __iterate_stations(struct ieee80211_local *local,
851 void (*iterator)(void *data,
852 struct ieee80211_sta *sta),
853 void *data)
854{
855 struct sta_info *sta;
856
857 list_for_each_entry_rcu(sta, &local->sta_list, list) {
858 if (!sta->uploaded)
859 continue;
860
861 iterator(data, &sta->sta);
862 }
863}
864
865void ieee80211_iterate_stations_atomic(struct ieee80211_hw *hw,
866 void (*iterator)(void *data,
867 struct ieee80211_sta *sta),
868 void *data)
869{
870 struct ieee80211_local *local = hw_to_local(hw);
871
872 rcu_read_lock();
873 __iterate_stations(local, iterator, data);
874 rcu_read_unlock();
875}
876EXPORT_SYMBOL_GPL(ieee80211_iterate_stations_atomic);
877
ad7e718c
JB		 878struct ieee80211_vif *wdev_to_ieee80211_vif(struct wireless_dev *wdev)
879{
880 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
881
882 if (!ieee80211_sdata_running(sdata) ||
883 !(sdata->flags & IEEE80211_SDATA_IN_DRIVER))
884 return NULL;
885 return &sdata->vif;
886}
887EXPORT_SYMBOL_GPL(wdev_to_ieee80211_vif);
888
dc5a1ad7
EG		 889struct wireless_dev *ieee80211_vif_to_wdev(struct ieee80211_vif *vif)
890{
6513e98e
JB		 891 if (!vif)
892 return NULL;
893
f30386a8 894 return &vif_to_sdata(vif)->wdev;
dc5a1ad7
EG		 895}
896EXPORT_SYMBOL_GPL(ieee80211_vif_to_wdev);
897
42935eca
LR		 898/*
899 * Nothing should have been stuffed into the workqueue during
4afaff17
EG		 900 * the suspend->resume cycle. Since we can't check each caller
901 * of this function if we are already quiescing / suspended,
902 * check here and don't WARN since this can actually happen when
903 * the rx path (for example) is racing against __ieee80211_suspend
904 * and suspending / quiescing was set after the rx path checked
905 * them.
42935eca
LR		 906 */
907static bool ieee80211_can_queue_work(struct ieee80211_local *local)
908{
4afaff17
EG		 909 if (local->quiescing || (local->suspended && !local->resuming)) {
910 pr_warn("queueing ieee80211 work while going to suspend\n");
ceb99fe0 911 return false;
4afaff17 912 }
42935eca
LR		 913
914 return true;
915}
916
917void ieee80211_queue_work(struct ieee80211_hw *hw, struct work_struct *work)
918{
919 struct ieee80211_local *local = hw_to_local(hw);
920
921 if (!ieee80211_can_queue_work(local))
922 return;
923
924 queue_work(local->workqueue, work);
925}
926EXPORT_SYMBOL(ieee80211_queue_work);
927
928void ieee80211_queue_delayed_work(struct ieee80211_hw *hw,
929 struct delayed_work *dwork,
930 unsigned long delay)
931{
932 struct ieee80211_local *local = hw_to_local(hw);
933
934 if (!ieee80211_can_queue_work(local))
935 return;
936
937 queue_delayed_work(local->workqueue, dwork, delay);
938}
939EXPORT_SYMBOL(ieee80211_queue_delayed_work);
940
e4d005b8
JB		 941static void ieee80211_parse_extension_element(u32 *crc,
942 const struct element *elem,
943 struct ieee802_11_elems *elems)
944{
945 const void *data = elem->data + 1;
946 u8 len = elem->datalen - 1;
947
948 switch (elem->data[0]) {
949 case WLAN_EID_EXT_HE_MU_EDCA:
652e8363 950 if (len >= sizeof(*elems->mu_edca_param_set)) {
e4d005b8
JB		 951 elems->mu_edca_param_set = data;
952 if (crc)
953 *crc = crc32_be(*crc, (void *)elem,
954 elem->datalen + 2);
955 }
956 break;
957 case WLAN_EID_EXT_HE_CAPABILITY:
958 elems->he_cap = data;
959 elems->he_cap_len = len;
960 break;
961 case WLAN_EID_EXT_HE_OPERATION:
962 if (len >= sizeof(*elems->he_operation) &&
0f7e90fa 963 len >= ieee80211_he_oper_size(data) - 1) {
660d81da
JB		 964 if (crc)
965 *crc = crc32_be(*crc, (void *)elem,
966 elem->datalen + 2);
e4d005b8 967 elems->he_operation = data;
660d81da 968 }
e4d005b8
JB		 969 break;
970 case WLAN_EID_EXT_UORA:
652e8363 971 if (len >= 1)
e4d005b8
JB		 972 elems->uora_element = data;
973 break;
974 case WLAN_EID_EXT_MAX_CHANNEL_SWITCH_TIME:
975 if (len == 3)
976 elems->max_channel_switch_time = data;
977 break;
978 case WLAN_EID_EXT_MULTIPLE_BSSID_CONFIGURATION:
652e8363 979 if (len >= sizeof(*elems->mbssid_config_ie))
e4d005b8
JB		 980 elems->mbssid_config_ie = data;
981 break;
982 case WLAN_EID_EXT_HE_SPR:
983 if (len >= sizeof(*elems->he_spr) &&
984 len >= ieee80211_he_spr_size(data))
985 elems->he_spr = data;
986 break;
a6cf28e0 987 case WLAN_EID_EXT_HE_6GHZ_CAPA:
652e8363 988 if (len >= sizeof(*elems->he_6ghz_capa))
a6cf28e0
RM		 989 elems->he_6ghz_capa = data;
990 break;
e4d005b8
JB		 991 }
992}
993
78ac51f8
SS		 994static u32
995_ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
996 struct ieee802_11_elems *elems,
671042a4
SS		 997 u64 filter, u32 crc,
998 const struct element *check_inherit)
dd76986b 999{
671042a4 1000 const struct element *elem;
dd76986b 1001 bool calc_crc = filter != 0;
fcff4f10 1002 DECLARE_BITMAP(seen_elems, 256);
b2e506bf 1003 const u8 *ie;
dd76986b 1004
fcff4f10 1005 bitmap_zero(seen_elems, 256);
dd76986b 1006
c17e28d1 1007 for_each_element(elem, start, len) {
fcff4f10 1008 bool elem_parse_failed;
c17e28d1
JB		 1009 u8 id = elem->id;
1010 u8 elen = elem->datalen;
1011 const u8 *pos = elem->data;
fcff4f10 1012
671042a4
SS		 1013 if (check_inherit &&
1014 !cfg80211_is_element_inherited(elem,
1015 check_inherit))
1016 continue;
1017
9690fb16
JB		 1018 switch (id) {
1019 case WLAN_EID_SSID:
1020 case WLAN_EID_SUPP_RATES:
1021 case WLAN_EID_FH_PARAMS:
1022 case WLAN_EID_DS_PARAMS:
1023 case WLAN_EID_CF_PARAMS:
1024 case WLAN_EID_TIM:
1025 case WLAN_EID_IBSS_PARAMS:
1026 case WLAN_EID_CHALLENGE:
1027 case WLAN_EID_RSN:
1028 case WLAN_EID_ERP_INFO:
1029 case WLAN_EID_EXT_SUPP_RATES:
1030 case WLAN_EID_HT_CAPABILITY:
1031 case WLAN_EID_HT_OPERATION:
1032 case WLAN_EID_VHT_CAPABILITY:
1033 case WLAN_EID_VHT_OPERATION:
1034 case WLAN_EID_MESH_ID:
1035 case WLAN_EID_MESH_CONFIG:
1036 case WLAN_EID_PEER_MGMT:
1037 case WLAN_EID_PREQ:
1038 case WLAN_EID_PREP:
1039 case WLAN_EID_PERR:
1040 case WLAN_EID_RANN:
1041 case WLAN_EID_CHANNEL_SWITCH:
1042 case WLAN_EID_EXT_CHANSWITCH_ANN:
1043 case WLAN_EID_COUNTRY:
1044 case WLAN_EID_PWR_CONSTRAINT:
1045 case WLAN_EID_TIMEOUT_INTERVAL:
85220d71 1046 case WLAN_EID_SECONDARY_CHANNEL_OFFSET:
b2e506bf 1047 case WLAN_EID_WIDE_BW_CHANNEL_SWITCH:
8f2535b9 1048 case WLAN_EID_CHAN_SWITCH_PARAM:
9041c1fa 1049 case WLAN_EID_EXT_CAPABILITY:
53837584
AN		 1050 case WLAN_EID_CHAN_SWITCH_TIMING:
1051 case WLAN_EID_LINK_ID:
e38a017b 1052 case WLAN_EID_BSS_MAX_IDLE_PERIOD:
c0058df7 1053 case WLAN_EID_RSNX:
cd418ba6
TP		 1054 case WLAN_EID_S1G_BCN_COMPAT:
1055 case WLAN_EID_S1G_CAPABILITIES:
1056 case WLAN_EID_S1G_OPERATION:
1d00ce80 1057 case WLAN_EID_AID_RESPONSE:
cd418ba6 1058 case WLAN_EID_S1G_SHORT_BCN_INTERVAL:
b2e506bf
JB		 1059 /*
1060 * not listing WLAN_EID_CHANNEL_SWITCH_WRAPPER -- it seems possible
1061 * that if the content gets bigger it might be needed more than once
1062 */
9690fb16
JB		 1063 if (test_bit(id, seen_elems)) {
1064 elems->parse_error = true;
9690fb16
JB		 1065 continue;
1066 }
1067 break;
fcff4f10 1068 }
dd76986b
JB		 1069
1070 if (calc_crc && id < 64 && (filter & (1ULL << id)))
1071 crc = crc32_be(crc, pos - 2, elen + 2);
1072
fcff4f10
PS		 1073 elem_parse_failed = false;
1074
dd76986b 1075 switch (id) {
53837584 1076 case WLAN_EID_LINK_ID:
652e8363 1077 if (elen + 2 < sizeof(struct ieee80211_tdls_lnkie)) {
53837584
AN		 1078 elem_parse_failed = true;
1079 break;
1080 }
1081 elems->lnk_id = (void *)(pos - 2);
1082 break;
1083 case WLAN_EID_CHAN_SWITCH_TIMING:
652e8363 1084 if (elen < sizeof(struct ieee80211_ch_switch_timing)) {
53837584
AN		 1085 elem_parse_failed = true;
1086 break;
1087 }
1088 elems->ch_sw_timing = (void *)pos;
1089 break;
9041c1fa
AN		 1090 case WLAN_EID_EXT_CAPABILITY:
1091 elems->ext_capab = pos;
1092 elems->ext_capab_len = elen;
1093 break;
dd76986b
JB		 1094 case WLAN_EID_SSID:
1095 elems->ssid = pos;
1096 elems->ssid_len = elen;
1097 break;
1098 case WLAN_EID_SUPP_RATES:
1099 elems->supp_rates = pos;
1100 elems->supp_rates_len = elen;
1101 break;
dd76986b 1102 case WLAN_EID_DS_PARAMS:
1cd8e88e
JB		 1103 if (elen >= 1)
1104 elems->ds_params = pos;
1105 else
1106 elem_parse_failed = true;
dd76986b 1107 break;
dd76986b
JB		 1108 case WLAN_EID_TIM:
1109 if (elen >= sizeof(struct ieee80211_tim_ie)) {
1110 elems->tim = (void *)pos;
1111 elems->tim_len = elen;
fcff4f10
PS		 1112 } else
1113 elem_parse_failed = true;
dd76986b 1114 break;
dd76986b
JB		 1115 case WLAN_EID_CHALLENGE:
1116 elems->challenge = pos;
1117 elems->challenge_len = elen;
1118 break;
1119 case WLAN_EID_VENDOR_SPECIFIC:
1120 if (elen >= 4 && pos[0] == 0x00 && pos[1] == 0x50 &&
1121 pos[2] == 0xf2) {
1122 /* Microsoft OUI (00:50:F2) */
1123
1124 if (calc_crc)
1125 crc = crc32_be(crc, pos - 2, elen + 2);
1126
441a33ba 1127 if (elen >= 5 && pos[3] == 2) {
dd76986b
JB		 1128 /* OUI Type 2 - WMM IE */
1129 if (pos[4] == 0) {
1130 elems->wmm_info = pos;
1131 elems->wmm_info_len = elen;
1132 } else if (pos[4] == 1) {
1133 elems->wmm_param = pos;
1134 elems->wmm_param_len = elen;
1135 }
1136 }
1137 }
1138 break;
1139 case WLAN_EID_RSN:
1140 elems->rsn = pos;
1141 elems->rsn_len = elen;
1142 break;
1143 case WLAN_EID_ERP_INFO:
1946bed9
JB		 1144 if (elen >= 1)
1145 elems->erp_info = pos;
1146 else
1147 elem_parse_failed = true;
dd76986b
JB		 1148 break;
1149 case WLAN_EID_EXT_SUPP_RATES:
1150 elems->ext_supp_rates = pos;
1151 elems->ext_supp_rates_len = elen;
1152 break;
1153 case WLAN_EID_HT_CAPABILITY:
1154 if (elen >= sizeof(struct ieee80211_ht_cap))
1155 elems->ht_cap_elem = (void *)pos;
fcff4f10
PS		 1156 else
1157 elem_parse_failed = true;
dd76986b 1158 break;
074d46d1
JB		 1159 case WLAN_EID_HT_OPERATION:
1160 if (elen >= sizeof(struct ieee80211_ht_operation))
1161 elems->ht_operation = (void *)pos;
fcff4f10
PS		 1162 else
1163 elem_parse_failed = true;
dd76986b 1164 break;
818255ea
MP		 1165 case WLAN_EID_VHT_CAPABILITY:
1166 if (elen >= sizeof(struct ieee80211_vht_cap))
1167 elems->vht_cap_elem = (void *)pos;
1168 else
1169 elem_parse_failed = true;
1170 break;
1171 case WLAN_EID_VHT_OPERATION:
a04564c9 1172 if (elen >= sizeof(struct ieee80211_vht_operation)) {
818255ea 1173 elems->vht_operation = (void *)pos;
a04564c9
JB		 1174 if (calc_crc)
1175 crc = crc32_be(crc, pos - 2, elen + 2);
1176 break;
1177 }
1178 elem_parse_failed = true;
818255ea 1179 break;
bee7f586 1180 case WLAN_EID_OPMODE_NOTIF:
a04564c9 1181 if (elen > 0) {
bee7f586 1182 elems->opmode_notif = pos;
a04564c9
JB		 1183 if (calc_crc)
1184 crc = crc32_be(crc, pos - 2, elen + 2);
1185 break;
1186 }
1187 elem_parse_failed = true;
bee7f586 1188 break;
dd76986b
JB		 1189 case WLAN_EID_MESH_ID:
1190 elems->mesh_id = pos;
1191 elems->mesh_id_len = elen;
1192 break;
1193 case WLAN_EID_MESH_CONFIG:
1194 if (elen >= sizeof(struct ieee80211_meshconf_ie))
1195 elems->mesh_config = (void *)pos;
fcff4f10
PS		 1196 else
1197 elem_parse_failed = true;
dd76986b
JB		 1198 break;
1199 case WLAN_EID_PEER_MGMT:
1200 elems->peering = pos;
1201 elems->peering_len = elen;
1202 break;
3f52b7e3
MP		 1203 case WLAN_EID_MESH_AWAKE_WINDOW:
1204 if (elen >= 2)
1205 elems->awake_window = (void *)pos;
1206 break;
dd76986b
JB		 1207 case WLAN_EID_PREQ:
1208 elems->preq = pos;
1209 elems->preq_len = elen;
1210 break;
1211 case WLAN_EID_PREP:
1212 elems->prep = pos;
1213 elems->prep_len = elen;
1214 break;
1215 case WLAN_EID_PERR:
1216 elems->perr = pos;
1217 elems->perr_len = elen;
1218 break;
1219 case WLAN_EID_RANN:
1220 if (elen >= sizeof(struct ieee80211_rann_ie))
1221 elems->rann = (void *)pos;
fcff4f10
PS		 1222 else
1223 elem_parse_failed = true;
dd76986b
JB		 1224 break;
1225 case WLAN_EID_CHANNEL_SWITCH:
5bc1420b
JB		 1226 if (elen != sizeof(struct ieee80211_channel_sw_ie)) {
1227 elem_parse_failed = true;
1228 break;
1229 }
1230 elems->ch_switch_ie = (void *)pos;
dd76986b 1231 break;
b4f286a1
JB		 1232 case WLAN_EID_EXT_CHANSWITCH_ANN:
1233 if (elen != sizeof(struct ieee80211_ext_chansw_ie)) {
1234 elem_parse_failed = true;
1235 break;
1236 }
1237 elems->ext_chansw_ie = (void *)pos;
1238 break;
85220d71
JB		 1239 case WLAN_EID_SECONDARY_CHANNEL_OFFSET:
1240 if (elen != sizeof(struct ieee80211_sec_chan_offs_ie)) {
1241 elem_parse_failed = true;
1242 break;
1243 }
1244 elems->sec_chan_offs = (void *)pos;
1245 break;
8f2535b9 1246 case WLAN_EID_CHAN_SWITCH_PARAM:
652e8363 1247 if (elen <
8f2535b9
CYY		 1248 sizeof(*elems->mesh_chansw_params_ie)) {
1249 elem_parse_failed = true;
1250 break;
1251 }
1252 elems->mesh_chansw_params_ie = (void *)pos;
1253 break;
b2e506bf
JB		 1254 case WLAN_EID_WIDE_BW_CHANNEL_SWITCH:
1255 if (!action ||
652e8363 1256 elen < sizeof(*elems->wide_bw_chansw_ie)) {
b2e506bf
JB		 1257 elem_parse_failed = true;
1258 break;
1259 }
1260 elems->wide_bw_chansw_ie = (void *)pos;
1261 break;
1262 case WLAN_EID_CHANNEL_SWITCH_WRAPPER:
1263 if (action) {
1264 elem_parse_failed = true;
1265 break;
1266 }
1267 /*
1268 * This is a bit tricky, but as we only care about
1269 * the wide bandwidth channel switch element, so
1270 * just parse it out manually.
1271 */
1272 ie = cfg80211_find_ie(WLAN_EID_WIDE_BW_CHANNEL_SWITCH,
1273 pos, elen);
1274 if (ie) {
652e8363 1275 if (ie[1] >= sizeof(*elems->wide_bw_chansw_ie))
b2e506bf
JB		 1276 elems->wide_bw_chansw_ie =
1277 (void *)(ie + 2);
1278 else
1279 elem_parse_failed = true;
1280 }
1281 break;
dd76986b
JB		 1282 case WLAN_EID_COUNTRY:
1283 elems->country_elem = pos;
1284 elems->country_elem_len = elen;
1285 break;
1286 case WLAN_EID_PWR_CONSTRAINT:
761a48d2
JB		 1287 if (elen != 1) {
1288 elem_parse_failed = true;
1289 break;
1290 }
dd76986b 1291 elems->pwr_constr_elem = pos;
dd76986b 1292 break;
c8d65917
SG		 1293 case WLAN_EID_CISCO_VENDOR_SPECIFIC:
1294 /* Lots of different options exist, but we only care
1295 * about the Dynamic Transmit Power Control element.
1296 * First check for the Cisco OUI, then for the DTPC
1297 * tag (0x00).
1298 */
1299 if (elen < 4) {
1300 elem_parse_failed = true;
1301 break;
1302 }
1303
1304 if (pos[0] != 0x00 || pos[1] != 0x40 ||
1305 pos[2] != 0x96 || pos[3] != 0x00)
1306 break;
1307
1308 if (elen != 6) {
1309 elem_parse_failed = true;
1310 break;
1311 }
1312
1313 if (calc_crc)
1314 crc = crc32_be(crc, pos - 2, elen + 2);
1315
1316 elems->cisco_dtpc_elem = pos;
1317 break;
2aa485e1 1318 case WLAN_EID_ADDBA_EXT:
652e8363 1319 if (elen < sizeof(struct ieee80211_addba_ext_ie)) {
2aa485e1
JC		 1320 elem_parse_failed = true;
1321 break;
1322 }
1323 elems->addba_ext_ie = (void *)pos;
1324 break;
dd76986b 1325 case WLAN_EID_TIMEOUT_INTERVAL:
79ba1d89
JB		 1326 if (elen >= sizeof(struct ieee80211_timeout_interval_ie))
1327 elems->timeout_int = (void *)pos;
1328 else
1329 elem_parse_failed = true;
dd76986b 1330 break;
e38a017b
AS		 1331 case WLAN_EID_BSS_MAX_IDLE_PERIOD:
1332 if (elen >= sizeof(*elems->max_idle_period_ie))
1333 elems->max_idle_period_ie = (void *)pos;
1334 break;
c0058df7
ST		 1335 case WLAN_EID_RSNX:
1336 elems->rsnx = pos;
1337 elems->rsnx_len = elen;
1338 break;
41cbb0f5 1339 case WLAN_EID_EXTENSION:
e4d005b8
JB		 1340 ieee80211_parse_extension_element(calc_crc ?
1341 &crc : NULL,
1342 elem, elems);
41cbb0f5 1343 break;
cd418ba6 1344 case WLAN_EID_S1G_CAPABILITIES:
652e8363 1345 if (elen >= sizeof(*elems->s1g_capab))
cd418ba6
TP		 1346 elems->s1g_capab = (void *)pos;
1347 else
1348 elem_parse_failed = true;
1349 break;
1350 case WLAN_EID_S1G_OPERATION:
1351 if (elen == sizeof(*elems->s1g_oper))
1352 elems->s1g_oper = (void *)pos;
1353 else
1354 elem_parse_failed = true;
1355 break;
1356 case WLAN_EID_S1G_BCN_COMPAT:
1357 if (elen == sizeof(*elems->s1g_bcn_compat))
1358 elems->s1g_bcn_compat = (void *)pos;
1359 else
1360 elem_parse_failed = true;
1361 break;
1d00ce80
TP		 1362 case WLAN_EID_AID_RESPONSE:
1363 if (elen == sizeof(struct ieee80211_aid_response_ie))
1364 elems->aid_resp = (void *)pos;
1365 else
1366 elem_parse_failed = true;
1367 break;
dd76986b
JB		 1368 default:
1369 break;
1370 }
1371
fcff4f10
PS		 1372 if (elem_parse_failed)
1373 elems->parse_error = true;
1374 else
5df45690 1375 __set_bit(id, seen_elems);
dd76986b
JB		 1376 }
1377
c17e28d1 1378 if (!for_each_element_completed(elem, start, len))
fcff4f10
PS		 1379 elems->parse_error = true;
1380
dd76986b
JB		 1381 return crc;
1382}
1383
5023b14c
SS		 1384static size_t ieee802_11_find_bssid_profile(const u8 *start, size_t len,
1385 struct ieee802_11_elems *elems,
1386 u8 *transmitter_bssid,
1387 u8 *bss_bssid,
5809a5d5 1388 u8 *nontransmitted_profile)
671042a4
SS		 1389{
1390 const struct element *elem, *sub;
5023b14c
SS		 1391 size_t profile_len = 0;
1392 bool found = false;
671042a4
SS		 1393
1394 if (!bss_bssid || !transmitter_bssid)
5023b14c 1395 return profile_len;
671042a4
SS		 1396
1397 for_each_element_id(elem, WLAN_EID_MULTIPLE_BSSID, start, len) {
1398 if (elem->datalen < 2)
1399 continue;
1400
1401 for_each_element(sub, elem->data + 1, elem->datalen - 1) {
1402 u8 new_bssid[ETH_ALEN];
1403 const u8 *index;
1404
1405 if (sub->id != 0 || sub->datalen < 4) {
1406 /* not a valid BSS profile */
1407 continue;
1408 }
1409
1410 if (sub->data[0] != WLAN_EID_NON_TX_BSSID_CAP ||
1411 sub->data[1] != 2) {
1412 /* The first element of the
1413 * Nontransmitted BSSID Profile is not
1414 * the Nontransmitted BSSID Capability
1415 * element.
1416 */
1417 continue;
1418 }
1419
5809a5d5 1420 memset(nontransmitted_profile, 0, len);
5023b14c
SS		 1421 profile_len = cfg80211_merge_profile(start, len,
1422 elem,
1423 sub,
1424 nontransmitted_profile,
1425 len);
1426
671042a4
SS		 1427 /* found a Nontransmitted BSSID Profile */
1428 index = cfg80211_find_ie(WLAN_EID_MULTI_BSSID_IDX,
5809a5d5 1429 nontransmitted_profile,
5023b14c 1430 profile_len);
671042a4
SS		 1431 if (!index || index[1] < 1 || index[2] == 0) {
1432 /* Invalid MBSSID Index element */
1433 continue;
1434 }
1435
1436 cfg80211_gen_new_bssid(transmitter_bssid,
1437 elem->data[0],
1438 index[2],
1439 new_bssid);
1440 if (ether_addr_equal(new_bssid, bss_bssid)) {
5023b14c 1441 found = true;
671042a4
SS		 1442 elems->bssid_index_len = index[1];
1443 elems->bssid_index = (void *)&index[2];
1444 break;
1445 }
1446 }
1447 }
5023b14c
SS		 1448
1449 return found ? profile_len : 0;
671042a4
SS		 1450}
1451
78ac51f8
SS		 1452u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
1453 struct ieee802_11_elems *elems,
1454 u64 filter, u32 crc, u8 *transmitter_bssid,
1455 u8 *bss_bssid)
1456{
671042a4 1457 const struct element *non_inherit = NULL;
5023b14c
SS		 1458 u8 *nontransmitted_profile;
1459 int nontransmitted_profile_len = 0;
671042a4 1460
78ac51f8
SS		 1461 memset(elems, 0, sizeof(*elems));
1462 elems->ie_start = start;
1463 elems->total_len = len;
1464
5023b14c
SS		 1465 nontransmitted_profile = kmalloc(len, GFP_ATOMIC);
1466 if (nontransmitted_profile) {
1467 nontransmitted_profile_len =
1468 ieee802_11_find_bssid_profile(start, len, elems,
1469 transmitter_bssid,
1470 bss_bssid,
5809a5d5 1471 nontransmitted_profile);
671042a4
SS		 1472 non_inherit =
1473 cfg80211_find_ext_elem(WLAN_EID_EXT_NON_INHERITANCE,
5023b14c
SS		 1474 nontransmitted_profile,
1475 nontransmitted_profile_len);
1476 }
671042a4 1477
78ac51f8 1478 crc = _ieee802_11_parse_elems_crc(start, len, action, elems, filter,
671042a4 1479 crc, non_inherit);
78ac51f8
SS		 1480
1481 /* Override with nontransmitted profile, if found */
5023b14c
SS		 1482 if (nontransmitted_profile_len)
1483 _ieee802_11_parse_elems_crc(nontransmitted_profile,
1484 nontransmitted_profile_len,
671042a4 1485 action, elems, 0, 0, NULL);
78ac51f8
SS		 1486
1487 if (elems->tim && !elems->parse_error) {
1488 const struct ieee80211_tim_ie *tim_ie = elems->tim;
1489
1490 elems->dtim_period = tim_ie->dtim_period;
1491 elems->dtim_count = tim_ie->dtim_count;
1492 }
1493
1494 /* Override DTIM period and count if needed */
1495 if (elems->bssid_index &&
1496 elems->bssid_index_len >=
1497 offsetofend(struct ieee80211_bssid_index, dtim_period))
1498 elems->dtim_period = elems->bssid_index->dtim_period;
1499
1500 if (elems->bssid_index &&
1501 elems->bssid_index_len >=
1502 offsetofend(struct ieee80211_bssid_index, dtim_count))
1503 elems->dtim_count = elems->bssid_index->dtim_count;
1504
5023b14c
SS		 1505 kfree(nontransmitted_profile);
1506
78ac51f8
SS		 1507 return crc;
1508}
1509
e552af05
HD		 1510void ieee80211_regulatory_limit_wmm_params(struct ieee80211_sub_if_data *sdata,
1511 struct ieee80211_tx_queue_params
1512 *qparam, int ac)
1513{
1514 struct ieee80211_chanctx_conf *chanctx_conf;
1515 const struct ieee80211_reg_rule *rrule;
38cb87ee 1516 const struct ieee80211_wmm_ac *wmm_ac;
e552af05
HD		 1517 u16 center_freq = 0;
1518
1519 if (sdata->vif.type != NL80211_IFTYPE_AP &&
1520 sdata->vif.type != NL80211_IFTYPE_STATION)
1521 return;
1522
1523 rcu_read_lock();
1524 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1525 if (chanctx_conf)
1526 center_freq = chanctx_conf->def.chan->center_freq;
1527
1528 if (!center_freq) {
1529 rcu_read_unlock();
1530 return;
1531 }
1532
1533 rrule = freq_reg_info(sdata->wdev.wiphy, MHZ_TO_KHZ(center_freq));
1534
38cb87ee 1535 if (IS_ERR_OR_NULL(rrule) || !rrule->has_wmm) {
e552af05
HD		 1536 rcu_read_unlock();
1537 return;
1538 }
1539
1540 if (sdata->vif.type == NL80211_IFTYPE_AP)
38cb87ee 1541 wmm_ac = &rrule->wmm_rule.ap[ac];
e552af05 1542 else
38cb87ee 1543 wmm_ac = &rrule->wmm_rule.client[ac];
e552af05
HD		 1544 qparam->cw_min = max_t(u16, qparam->cw_min, wmm_ac->cw_min);
1545 qparam->cw_max = max_t(u16, qparam->cw_max, wmm_ac->cw_max);
1546 qparam->aifs = max_t(u8, qparam->aifs, wmm_ac->aifsn);
abd76d25 1547 qparam->txop = min_t(u16, qparam->txop, wmm_ac->cot / 32);
e552af05
HD		 1548 rcu_read_unlock();
1549}
1550
3abead59 1551void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
cec66283 1552 bool bss_notify, bool enable_qos)
5825fe10
JB		 1553{
1554 struct ieee80211_local *local = sdata->local;
1555 struct ieee80211_tx_queue_params qparam;
55de908a 1556 struct ieee80211_chanctx_conf *chanctx_conf;
54bcbc69 1557 int ac;
cec66283 1558 bool use_11b;
239281f8 1559 bool is_ocb; /* Use another EDCA parameters if dot11OCBActivated=true */
aa837e1d 1560 int aCWmin, aCWmax;
5825fe10
JB		 1561
1562 if (!local->ops->conf_tx)
1563 return;
1564
54bcbc69
JB		 1565 if (local->hw.queues < IEEE80211_NUM_ACS)
1566 return;
1567
5825fe10
JB		 1568 memset(&qparam, 0, sizeof(qparam));
1569
55de908a
JB		 1570 rcu_read_lock();
1571 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1572 use_11b = (chanctx_conf &&
57fbcce3 1573 chanctx_conf->def.chan->band == NL80211_BAND_2GHZ) &&
aa837e1d 1574 !(sdata->flags & IEEE80211_SDATA_OPERATING_GMODE);
55de908a 1575 rcu_read_unlock();
5825fe10 1576
239281f8
RL		 1577 is_ocb = (sdata->vif.type == NL80211_IFTYPE_OCB);
1578
1f4ffde8
FZ		 1579 /* Set defaults according to 802.11-2007 Table 7-37 */
1580 aCWmax = 1023;
1581 if (use_11b)
1582 aCWmin = 31;
1583 else
1584 aCWmin = 15;
1585
1586 /* Confiure old 802.11b/g medium access rules. */
1587 qparam.cw_max = aCWmax;
1588 qparam.cw_min = aCWmin;
1589 qparam.txop = 0;
1590 qparam.aifs = 2;
aa837e1d 1591
1f4ffde8
FZ		 1592 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
1593 /* Update if QoS is enabled. */
a8ce8544
SG		 1594 if (enable_qos) {
1595 switch (ac) {
1596 case IEEE80211_AC_BK:
1597 qparam.cw_max = aCWmax;
1598 qparam.cw_min = aCWmin;
1599 qparam.txop = 0;
239281f8
RL		 1600 if (is_ocb)
1601 qparam.aifs = 9;
1602 else
1603 qparam.aifs = 7;
a8ce8544
SG		 1604 break;
1605 /* never happens but let's not leave undefined */
1606 default:
1607 case IEEE80211_AC_BE:
1608 qparam.cw_max = aCWmax;
1609 qparam.cw_min = aCWmin;
1610 qparam.txop = 0;
239281f8
RL		 1611 if (is_ocb)
1612 qparam.aifs = 6;
1613 else
1614 qparam.aifs = 3;
a8ce8544
SG		 1615 break;
1616 case IEEE80211_AC_VI:
1617 qparam.cw_max = aCWmin;
1618 qparam.cw_min = (aCWmin + 1) / 2 - 1;
239281f8
RL		 1619 if (is_ocb)
1620 qparam.txop = 0;
1621 else if (use_11b)
a8ce8544
SG		 1622 qparam.txop = 6016/32;
1623 else
1624 qparam.txop = 3008/32;
239281f8
RL		 1625
1626 if (is_ocb)
1627 qparam.aifs = 3;
1628 else
1629 qparam.aifs = 2;
a8ce8544
SG		 1630 break;
1631 case IEEE80211_AC_VO:
1632 qparam.cw_max = (aCWmin + 1) / 2 - 1;
1633 qparam.cw_min = (aCWmin + 1) / 4 - 1;
239281f8
RL		 1634 if (is_ocb)
1635 qparam.txop = 0;
1636 else if (use_11b)
a8ce8544
SG		 1637 qparam.txop = 3264/32;
1638 else
1639 qparam.txop = 1504/32;
1640 qparam.aifs = 2;
1641 break;
1642 }
aa837e1d 1643 }
e552af05 1644 ieee80211_regulatory_limit_wmm_params(sdata, &qparam, ac);
5825fe10 1645
ab13315a
KV		 1646 qparam.uapsd = false;
1647
54bcbc69
JB		 1648 sdata->tx_conf[ac] = qparam;
1649 drv_conf_tx(local, sdata, ac, &qparam);
aa837e1d 1650 }
e1b3ec1a 1651
f142c6b9 1652 if (sdata->vif.type != NL80211_IFTYPE_MONITOR &&
708d50ed
AB		 1653 sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE &&
1654 sdata->vif.type != NL80211_IFTYPE_NAN) {
a8ce8544 1655 sdata->vif.bss_conf.qos = enable_qos;
3abead59
JB		 1656 if (bss_notify)
1657 ieee80211_bss_info_change_notify(sdata,
1658 BSS_CHANGED_QOS);
d9734979 1659 }
5825fe10 1660}
e50db65c 1661
46900298 1662void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
700e8ea6 1663 u16 transaction, u16 auth_alg, u16 status,
4a3cb702 1664 const u8 *extra, size_t extra_len, const u8 *da,
1672c0e3
JB		 1665 const u8 *bssid, const u8 *key, u8 key_len, u8 key_idx,
1666 u32 tx_flags)
46900298
JB		 1667{
1668 struct ieee80211_local *local = sdata->local;
1669 struct sk_buff *skb;
1670 struct ieee80211_mgmt *mgmt;
fffd0934 1671 int err;
46900298 1672
15e230ab 1673 /* 24 + 6 = header + auth_algo + auth_transaction + status_code */
744462a9
MS		 1674 skb = dev_alloc_skb(local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN +
1675 24 + 6 + extra_len + IEEE80211_WEP_ICV_LEN);
d15b8459 1676 if (!skb)
46900298 1677 return;
d15b8459 1678
744462a9 1679 skb_reserve(skb, local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN);
46900298 1680
b080db58 1681 mgmt = skb_put_zero(skb, 24 + 6);
46900298
JB		 1682 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
1683 IEEE80211_STYPE_AUTH);
efa6a09d 1684 memcpy(mgmt->da, da, ETH_ALEN);
47846c9b 1685 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
46900298
JB		 1686 memcpy(mgmt->bssid, bssid, ETH_ALEN);
1687 mgmt->u.auth.auth_alg = cpu_to_le16(auth_alg);
1688 mgmt->u.auth.auth_transaction = cpu_to_le16(transaction);
700e8ea6 1689 mgmt->u.auth.status_code = cpu_to_le16(status);
46900298 1690 if (extra)
59ae1d12 1691 skb_put_data(skb, extra, extra_len);
46900298 1692
fffd0934
JB		 1693 if (auth_alg == WLAN_AUTH_SHARED_KEY && transaction == 3) {
1694 mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
1695 err = ieee80211_wep_encrypt(local, skb, key, key_len, key_idx);
7d7b0075
JB		 1696 if (WARN_ON(err)) {
1697 kfree_skb(skb);
1698 return;
1699 }
fffd0934
JB		 1700 }
1701
1672c0e3
JB		 1702 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT |
1703 tx_flags;
62ae67be 1704 ieee80211_tx_skb(sdata, skb);
46900298
JB		 1705}
1706
6ae16775 1707void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
4b08d1b6
JB		 1708 const u8 *da, const u8 *bssid,
1709 u16 stype, u16 reason,
6ae16775
AQ		 1710 bool send_frame, u8 *frame_buf)
1711{
1712 struct ieee80211_local *local = sdata->local;
1713 struct sk_buff *skb;
1714 struct ieee80211_mgmt *mgmt = (void *)frame_buf;
1715
1716 /* build frame */
1717 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | stype);
1718 mgmt->duration = 0; /* initialize only */
1719 mgmt->seq_ctrl = 0; /* initialize only */
4b08d1b6 1720 memcpy(mgmt->da, da, ETH_ALEN);
6ae16775
AQ		 1721 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
1722 memcpy(mgmt->bssid, bssid, ETH_ALEN);
1723 /* u.deauth.reason_code == u.disassoc.reason_code */
1724 mgmt->u.deauth.reason_code = cpu_to_le16(reason);
1725
1726 if (send_frame) {
1727 skb = dev_alloc_skb(local->hw.extra_tx_headroom +
1728 IEEE80211_DEAUTH_FRAME_LEN);
1729 if (!skb)
1730 return;
1731
1732 skb_reserve(skb, local->hw.extra_tx_headroom);
1733
1734 /* copy in frame */
59ae1d12 1735 skb_put_data(skb, mgmt, IEEE80211_DEAUTH_FRAME_LEN);
6ae16775
AQ		 1736
1737 if (sdata->vif.type != NL80211_IFTYPE_STATION ||
1738 !(sdata->u.mgd.flags & IEEE80211_STA_MFP_ENABLED))
1739 IEEE80211_SKB_CB(skb)->flags |=
1740 IEEE80211_TX_INTFL_DONT_ENCRYPT;
1741
1742 ieee80211_tx_skb(sdata, skb);
1743 }
1744}
1745
2ad2274c
IP		 1746static u8 *ieee80211_write_he_6ghz_cap(u8 *pos, __le16 cap, u8 *end)
1747{
1748 if ((end - pos) < 5)
1749 return pos;
1750
1751 *pos++ = WLAN_EID_EXTENSION;
1752 *pos++ = 1 + sizeof(cap);
1753 *pos++ = WLAN_EID_EXT_HE_6GHZ_CAPA;
1754 memcpy(pos, &cap, sizeof(cap));
1755
1756 return pos + 2;
1757}
1758
1759static int ieee80211_build_preq_ies_band(struct ieee80211_sub_if_data *sdata,
c56ef672
DS		 1760 u8 *buffer, size_t buffer_len,
1761 const u8 *ie, size_t ie_len,
57fbcce3 1762 enum nl80211_band band,
c56ef672
DS		 1763 u32 rate_mask,
1764 struct cfg80211_chan_def *chandef,
00387f32 1765 size_t *offset, u32 flags)
de95a54b 1766{
2ad2274c 1767 struct ieee80211_local *local = sdata->local;
de95a54b 1768 struct ieee80211_supported_band *sband;
41cbb0f5 1769 const struct ieee80211_sta_he_cap *he_cap;
c604b9f2 1770 u8 *pos = buffer, *end = buffer + buffer_len;
c56ef672 1771 size_t noffset;
8e664fb3 1772 int supp_rates_len, i;
8dcb2003
JM		 1773 u8 rates[32];
1774 int num_rates;
1775 int ext_rates_len;
2103dec1
SW		 1776 int shift;
1777 u32 rate_flags;
40a11ca8 1778 bool have_80mhz = false;
de95a54b 1779
c56ef672
DS		 1780 *offset = 0;
1781
4d36ec58 1782 sband = local->hw.wiphy->bands[band];
d811b3d5
AN		 1783 if (WARN_ON_ONCE(!sband))
1784 return 0;
de95a54b 1785
2103dec1
SW		 1786 rate_flags = ieee80211_chandef_rate_flags(chandef);
1787 shift = ieee80211_chandef_get_shift(chandef);
1788
8dcb2003
JM		 1789 num_rates = 0;
1790 for (i = 0; i < sband->n_bitrates; i++) {
1791 if ((BIT(i) & rate_mask) == 0)
1792 continue; /* skip rate */
2103dec1
SW		 1793 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
1794 continue;
1795
1796 rates[num_rates++] =
1797 (u8) DIV_ROUND_UP(sband->bitrates[i].bitrate,
1798 (1 << shift) * 5);
8dcb2003
JM		 1799 }
1800
1801 supp_rates_len = min_t(int, num_rates, 8);
8e664fb3 1802
c604b9f2
JB		 1803 if (end - pos < 2 + supp_rates_len)
1804 goto out_err;
de95a54b 1805 *pos++ = WLAN_EID_SUPP_RATES;
8e664fb3 1806 *pos++ = supp_rates_len;
8dcb2003
JM		 1807 memcpy(pos, rates, supp_rates_len);
1808 pos += supp_rates_len;
8e664fb3
JB		 1809
1810 /* insert "request information" if in custom IEs */
1811 if (ie && ie_len) {
1812 static const u8 before_extrates[] = {
1813 WLAN_EID_SSID,
1814 WLAN_EID_SUPP_RATES,
1815 WLAN_EID_REQUEST,
1816 };
1817 noffset = ieee80211_ie_split(ie, ie_len,
1818 before_extrates,
1819 ARRAY_SIZE(before_extrates),
c56ef672
DS		 1820 *offset);
1821 if (end - pos < noffset - *offset)
c604b9f2 1822 goto out_err;
c56ef672
DS		 1823 memcpy(pos, ie + *offset, noffset - *offset);
1824 pos += noffset - *offset;
1825 *offset = noffset;
8e664fb3
JB		 1826 }
1827
8dcb2003
JM		 1828 ext_rates_len = num_rates - supp_rates_len;
1829 if (ext_rates_len > 0) {
c604b9f2
JB		 1830 if (end - pos < 2 + ext_rates_len)
1831 goto out_err;
8e664fb3 1832 *pos++ = WLAN_EID_EXT_SUPP_RATES;
8dcb2003
JM		 1833 *pos++ = ext_rates_len;
1834 memcpy(pos, rates + supp_rates_len, ext_rates_len);
1835 pos += ext_rates_len;
8e664fb3
JB		 1836 }
1837
57fbcce3 1838 if (chandef->chan && sband->band == NL80211_BAND_2GHZ) {
c604b9f2
JB		 1839 if (end - pos < 3)
1840 goto out_err;
651b5225
JM		 1841 *pos++ = WLAN_EID_DS_PARAMS;
1842 *pos++ = 1;
2103dec1
SW		 1843 *pos++ = ieee80211_frequency_to_channel(
1844 chandef->chan->center_freq);
651b5225
JM		 1845 }
1846
b9771d41
JB		 1847 if (flags & IEEE80211_PROBE_FLAG_MIN_CONTENT)
1848 goto done;
1849
8e664fb3
JB		 1850 /* insert custom IEs that go before HT */
1851 if (ie && ie_len) {
1852 static const u8 before_ht[] = {
a7f26d80
JB		 1853 /*
1854 * no need to list the ones split off already
1855 * (or generated here)
1856 */
8e664fb3
JB		 1857 WLAN_EID_DS_PARAMS,
1858 WLAN_EID_SUPPORTED_REGULATORY_CLASSES,
1859 };
1860 noffset = ieee80211_ie_split(ie, ie_len,
1861 before_ht, ARRAY_SIZE(before_ht),
c56ef672
DS		 1862 *offset);
1863 if (end - pos < noffset - *offset)
c604b9f2 1864 goto out_err;
c56ef672
DS		 1865 memcpy(pos, ie + *offset, noffset - *offset);
1866 pos += noffset - *offset;
1867 *offset = noffset;
de95a54b
JB		 1868 }
1869
c604b9f2
JB		 1870 if (sband->ht_cap.ht_supported) {
1871 if (end - pos < 2 + sizeof(struct ieee80211_ht_cap))
1872 goto out_err;
ef96a842
BG		 1873 pos = ieee80211_ie_build_ht_cap(pos, &sband->ht_cap,
1874 sband->ht_cap.cap);
c604b9f2 1875 }
5ef2d41a 1876
4d952300 1877 /* insert custom IEs that go before VHT */
8e664fb3 1878 if (ie && ie_len) {
4d952300 1879 static const u8 before_vht[] = {
a7f26d80
JB		 1880 /*
1881 * no need to list the ones split off already
1882 * (or generated here)
1883 */
4d952300
JB		 1884 WLAN_EID_BSS_COEX_2040,
1885 WLAN_EID_EXT_CAPABILITY,
1886 WLAN_EID_SSID_LIST,
1887 WLAN_EID_CHANNEL_USAGE,
1888 WLAN_EID_INTERWORKING,
b44eebea 1889 WLAN_EID_MESH_ID,
a7f26d80 1890 /* 60 GHz (Multi-band, DMG, MMS) can't happen */
4d952300
JB		 1891 };
1892 noffset = ieee80211_ie_split(ie, ie_len,
1893 before_vht, ARRAY_SIZE(before_vht),
c56ef672
DS		 1894 *offset);
1895 if (end - pos < noffset - *offset)
c604b9f2 1896 goto out_err;
c56ef672
DS		 1897 memcpy(pos, ie + *offset, noffset - *offset);
1898 pos += noffset - *offset;
1899 *offset = noffset;
de95a54b
JB		 1900 }
1901
40a11ca8
JB		 1902 /* Check if any channel in this sband supports at least 80 MHz */
1903 for (i = 0; i < sband->n_channels; i++) {
fa44b988
AN		 1904 if (sband->channels[i].flags & (IEEE80211_CHAN_DISABLED |
1905 IEEE80211_CHAN_NO_80MHZ))
1906 continue;
1907
1908 have_80mhz = true;
1909 break;
40a11ca8
JB		 1910 }
1911
1912 if (sband->vht_cap.vht_supported && have_80mhz) {
c604b9f2
JB		 1913 if (end - pos < 2 + sizeof(struct ieee80211_vht_cap))
1914 goto out_err;
ba0afa2f
MP		 1915 pos = ieee80211_ie_build_vht_cap(pos, &sband->vht_cap,
1916 sband->vht_cap.cap);
c604b9f2 1917 }
ba0afa2f 1918
41cbb0f5
LC		 1919 /* insert custom IEs that go before HE */
1920 if (ie && ie_len) {
1921 static const u8 before_he[] = {
1922 /*
1923 * no need to list the ones split off before VHT
1924 * or generated here
1925 */
1926 WLAN_EID_EXTENSION, WLAN_EID_EXT_FILS_REQ_PARAMS,
1927 WLAN_EID_AP_CSN,
1928 /* TODO: add 11ah/11aj/11ak elements */
1929 };
1930 noffset = ieee80211_ie_split(ie, ie_len,
1931 before_he, ARRAY_SIZE(before_he),
1932 *offset);
1933 if (end - pos < noffset - *offset)
1934 goto out_err;
1935 memcpy(pos, ie + *offset, noffset - *offset);
1936 pos += noffset - *offset;
1937 *offset = noffset;
1938 }
1939
bac2fd3d
JB		 1940 he_cap = ieee80211_get_he_iftype_cap(sband,
1941 ieee80211_vif_type_p2p(&sdata->vif));
0bc47057
JB		 1942 if (he_cap &&
1943 cfg80211_any_usable_channels(local->hw.wiphy, BIT(sband->band),
1944 IEEE80211_CHAN_NO_HE)) {
41cbb0f5
LC		 1945 pos = ieee80211_ie_build_he_cap(pos, he_cap, end);
1946 if (!pos)
1947 goto out_err;
2ad2274c
IP		 1948
1949 if (sband->band == NL80211_BAND_6GHZ) {
1950 enum nl80211_iftype iftype =
1951 ieee80211_vif_type_p2p(&sdata->vif);
1952 __le16 cap = ieee80211_get_he_6ghz_capa(sband, iftype);
1953
1954 pos = ieee80211_write_he_6ghz_cap(pos, cap, end);
1955 }
41cbb0f5
LC		 1956 }
1957
1958 /*
1959 * If adding more here, adjust code in main.c
1960 * that calculates local->scan_ies_len.
1961 */
1962
c604b9f2
JB		 1963 return pos - buffer;
1964 out_err:
1965 WARN_ONCE(1, "not enough space for preq IEs\n");
b9771d41 1966 done:
de95a54b
JB		 1967 return pos - buffer;
1968}
1969
2ad2274c 1970int ieee80211_build_preq_ies(struct ieee80211_sub_if_data *sdata, u8 *buffer,
c56ef672
DS		 1971 size_t buffer_len,
1972 struct ieee80211_scan_ies *ie_desc,
1973 const u8 *ie, size_t ie_len,
1974 u8 bands_used, u32 *rate_masks,
00387f32
JB		 1975 struct cfg80211_chan_def *chandef,
1976 u32 flags)
c56ef672
DS		 1977{
1978 size_t pos = 0, old_pos = 0, custom_ie_offset = 0;
1979 int i;
1980
1981 memset(ie_desc, 0, sizeof(*ie_desc));
1982
57fbcce3 1983 for (i = 0; i < NUM_NL80211_BANDS; i++) {
c56ef672 1984 if (bands_used & BIT(i)) {
2ad2274c 1985 pos += ieee80211_build_preq_ies_band(sdata,
c56ef672
DS		 1986 buffer + pos,
1987 buffer_len - pos,
1988 ie, ie_len, i,
1989 rate_masks[i],
1990 chandef,
00387f32
JB		 1991 &custom_ie_offset,
1992 flags);
c56ef672
DS		 1993 ie_desc->ies[i] = buffer + old_pos;
1994 ie_desc->len[i] = pos - old_pos;
1995 old_pos = pos;
1996 }
1997 }
1998
1999 /* add any remaining custom IEs */
2000 if (ie && ie_len) {
2001 if (WARN_ONCE(buffer_len - pos < ie_len - custom_ie_offset,
2002 "not enough space for preq custom IEs\n"))
2003 return pos;
2004 memcpy(buffer + pos, ie + custom_ie_offset,
2005 ie_len - custom_ie_offset);
2006 ie_desc->common_ies = buffer + pos;
2007 ie_desc->common_ie_len = ie_len - custom_ie_offset;
2008 pos += ie_len - custom_ie_offset;
2009 }
2010
2011 return pos;
2012};
2013
a619a4c0 2014struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
a344d677
JB		 2015 const u8 *src, const u8 *dst,
2016 u32 ratemask,
6b77863b 2017 struct ieee80211_channel *chan,
a619a4c0 2018 const u8 *ssid, size_t ssid_len,
a806c558 2019 const u8 *ie, size_t ie_len,
00387f32 2020 u32 flags)
46900298
JB		 2021{
2022 struct ieee80211_local *local = sdata->local;
2103dec1 2023 struct cfg80211_chan_def chandef;
46900298
JB		 2024 struct sk_buff *skb;
2025 struct ieee80211_mgmt *mgmt;
b9a9ada1 2026 int ies_len;
57fbcce3 2027 u32 rate_masks[NUM_NL80211_BANDS] = {};
c56ef672 2028 struct ieee80211_scan_ies dummy_ie_desc;
46900298 2029
a806c558
PS		 2030 /*
2031 * Do not send DS Channel parameter for directed probe requests
2032 * in order to maximize the chance that we get a response. Some
2033 * badly-behaved APs don't respond when this parameter is included.
2034 */
2103dec1 2035 chandef.width = sdata->vif.bss_conf.chandef.width;
00387f32 2036 if (flags & IEEE80211_PROBE_FLAG_DIRECTED)
2103dec1 2037 chandef.chan = NULL;
a806c558 2038 else
2103dec1 2039 chandef.chan = chan;
651b5225 2040
a344d677
JB		 2041 skb = ieee80211_probereq_get(&local->hw, src, ssid, ssid_len,
2042 100 + ie_len);
5b2bbf75 2043 if (!skb)
b9a9ada1
JB		 2044 return NULL;
2045
c56ef672 2046 rate_masks[chan->band] = ratemask;
2ad2274c 2047 ies_len = ieee80211_build_preq_ies(sdata, skb_tail_pointer(skb),
c56ef672
DS		 2048 skb_tailroom(skb), &dummy_ie_desc,
2049 ie, ie_len, BIT(chan->band),
00387f32 2050 rate_masks, &chandef, flags);
b9a9ada1 2051 skb_put(skb, ies_len);
7c12ce8b 2052
46900298 2053 if (dst) {
7c12ce8b 2054 mgmt = (struct ieee80211_mgmt *) skb->data;
46900298
JB		 2055 memcpy(mgmt->da, dst, ETH_ALEN);
2056 memcpy(mgmt->bssid, dst, ETH_ALEN);
46900298 2057 }
46900298 2058
62ae67be 2059 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
5b2bbf75 2060
a619a4c0
JO		 2061 return skb;
2062}
2063
2103dec1 2064u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
46900298 2065 struct ieee802_11_elems *elems,
57fbcce3 2066 enum nl80211_band band, u32 *basic_rates)
46900298
JB		 2067{
2068 struct ieee80211_supported_band *sband;
46900298 2069 size_t num_rates;
2103dec1
SW		 2070 u32 supp_rates, rate_flags;
2071 int i, j, shift;
21a8e9dd 2072
2103dec1 2073 sband = sdata->local->hw.wiphy->bands[band];
21a8e9dd
MSS		 2074 if (WARN_ON(!sband))
2075 return 1;
2103dec1
SW		 2076
2077 rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef);
2078 shift = ieee80211_vif_get_shift(&sdata->vif);
46900298 2079
46900298
JB		 2080 num_rates = sband->n_bitrates;
2081 supp_rates = 0;
2082 for (i = 0; i < elems->supp_rates_len +
2083 elems->ext_supp_rates_len; i++) {
2084 u8 rate = 0;
2085 int own_rate;
9ebb61a2 2086 bool is_basic;
46900298
JB		 2087 if (i < elems->supp_rates_len)
2088 rate = elems->supp_rates[i];
2089 else if (elems->ext_supp_rates)
2090 rate = elems->ext_supp_rates
2091 [i - elems->supp_rates_len];
2092 own_rate = 5 * (rate & 0x7f);
9ebb61a2
AN		 2093 is_basic = !!(rate & 0x80);
2094
2095 if (is_basic && (rate & 0x7f) == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
2096 continue;
2097
2098 for (j = 0; j < num_rates; j++) {
2103dec1
SW		 2099 int brate;
2100 if ((rate_flags & sband->bitrates[j].flags)
2101 != rate_flags)
2102 continue;
2103
2104 brate = DIV_ROUND_UP(sband->bitrates[j].bitrate,
2105 1 << shift);
2106
2107 if (brate == own_rate) {
46900298 2108 supp_rates |= BIT(j);
9ebb61a2
AN		 2109 if (basic_rates && is_basic)
2110 *basic_rates |= BIT(j);
2111 }
2112 }
46900298
JB		 2113 }
2114 return supp_rates;
2115}
f2753ddb 2116
84f6a01c
JB		 2117void ieee80211_stop_device(struct ieee80211_local *local)
2118{
2119 ieee80211_led_radio(local, false);
67408c8c 2120 ieee80211_mod_tpt_led_trig(local, 0, IEEE80211_TPT_LEDTRIG_FL_RADIO);
84f6a01c
JB		 2121
2122 cancel_work_sync(&local->reconfig_filter);
84f6a01c
JB		 2123
2124 flush_workqueue(local->workqueue);
678f415f 2125 drv_stop(local);
84f6a01c
JB		 2126}
2127
74430f94
JB		 2128static void ieee80211_flush_completed_scan(struct ieee80211_local *local,
2129 bool aborted)
2130{
2131 /* It's possible that we don't handle the scan completion in
2132 * time during suspend, so if it's still marked as completed
2133 * here, queue the work and flush it to clean things up.
2134 * Instead of calling the worker function directly here, we
2135 * really queue it to avoid potential races with other flows
2136 * scheduling the same work.
2137 */
2138 if (test_bit(SCAN_COMPLETED, &local->scanning)) {
2139 /* If coming from reconfiguration failure, abort the scan so
2140 * we don't attempt to continue a partial HW scan - which is
2141 * possible otherwise if (e.g.) the 2.4 GHz portion was the
2142 * completed scan, and a 5 GHz portion is still pending.
2143 */
2144 if (aborted)
2145 set_bit(SCAN_ABORTED, &local->scanning);
2146 ieee80211_queue_delayed_work(&local->hw, &local->scan_work, 0);
2147 flush_delayed_work(&local->scan_work);
2148 }
2149}
2150
f6837ba8
JB		 2151static void ieee80211_handle_reconfig_failure(struct ieee80211_local *local)
2152{
2153 struct ieee80211_sub_if_data *sdata;
2154 struct ieee80211_chanctx *ctx;
2155
2156 /*
2157 * We get here if during resume the device can't be restarted properly.
2158 * We might also get here if this happens during HW reset, which is a
2159 * slightly different situation and we need to drop all connections in
2160 * the latter case.
2161 *
2162 * Ask cfg80211 to turn off all interfaces, this will result in more
2163 * warnings but at least we'll then get into a clean stopped state.
2164 */
2165
2166 local->resuming = false;
2167 local->suspended = false;
7584f88f 2168 local->in_reconfig = false;
f6837ba8 2169
74430f94
JB		 2170 ieee80211_flush_completed_scan(local, true);
2171
f6837ba8
JB		 2172 /* scheduled scan clearly can't be running any more, but tell
2173 * cfg80211 and clear local state
2174 */
2175 ieee80211_sched_scan_end(local);
2176
2177 list_for_each_entry(sdata, &local->interfaces, list)
2178 sdata->flags &= ~IEEE80211_SDATA_IN_DRIVER;
2179
2180 /* Mark channel contexts as not being in the driver any more to avoid
2181 * removing them from the driver during the shutdown process...
2182 */
2183 mutex_lock(&local->chanctx_mtx);
2184 list_for_each_entry(ctx, &local->chanctx_list, list)
2185 ctx->driver_present = false;
2186 mutex_unlock(&local->chanctx_mtx);
f6837ba8
JB		 2187}
2188
153a5fc4
SG		 2189static void ieee80211_assign_chanctx(struct ieee80211_local *local,
2190 struct ieee80211_sub_if_data *sdata)
2191{
2192 struct ieee80211_chanctx_conf *conf;
2193 struct ieee80211_chanctx *ctx;
2194
2195 if (!local->use_chanctx)
2196 return;
2197
2198 mutex_lock(&local->chanctx_mtx);
2199 conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
2200 lockdep_is_held(&local->chanctx_mtx));
2201 if (conf) {
2202 ctx = container_of(conf, struct ieee80211_chanctx, conf);
2203 drv_assign_vif_chanctx(local, sdata, ctx);
2204 }
2205 mutex_unlock(&local->chanctx_mtx);
2206}
2207
1ea2c864
JB		 2208static void ieee80211_reconfig_stations(struct ieee80211_sub_if_data *sdata)
2209{
2210 struct ieee80211_local *local = sdata->local;
2211 struct sta_info *sta;
2212
2213 /* add STAs back */
2214 mutex_lock(&local->sta_mtx);
2215 list_for_each_entry(sta, &local->sta_list, list) {
2216 enum ieee80211_sta_state state;
2217
2218 if (!sta->uploaded || sta->sdata != sdata)
2219 continue;
2220
2221 for (state = IEEE80211_STA_NOTEXIST;
2222 state < sta->sta_state; state++)
2223 WARN_ON(drv_sta_state(local, sta->sdata, sta, state,
2224 state + 1));
2225 }
2226 mutex_unlock(&local->sta_mtx);
2227}
2228
167e33f4
AB		 2229static int ieee80211_reconfig_nan(struct ieee80211_sub_if_data *sdata)
2230{
2231 struct cfg80211_nan_func *func, **funcs;
2232 int res, id, i = 0;
2233
2234 res = drv_start_nan(sdata->local, sdata,
2235 &sdata->u.nan.conf);
2236 if (WARN_ON(res))
2237 return res;
2238
6396bb22
KC		 2239 funcs = kcalloc(sdata->local->hw.max_nan_de_entries + 1,
2240 sizeof(*funcs),
2241 GFP_KERNEL);
167e33f4
AB		 2242 if (!funcs)
2243 return -ENOMEM;
2244
2245 /* Add all the functions:
2246 * This is a little bit ugly. We need to call a potentially sleeping
2247 * callback for each NAN function, so we can't hold the spinlock.
2248 */
2249 spin_lock_bh(&sdata->u.nan.func_lock);
2250
2251 idr_for_each_entry(&sdata->u.nan.function_inst_ids, func, id)
2252 funcs[i++] = func;
2253
2254 spin_unlock_bh(&sdata->u.nan.func_lock);
2255
2256 for (i = 0; funcs[i]; i++) {
2257 res = drv_add_nan_func(sdata->local, sdata, funcs[i]);
2258 if (WARN_ON(res))
2259 ieee80211_nan_func_terminated(&sdata->vif,
2260 funcs[i]->instance_id,
2261 NL80211_NAN_FUNC_TERM_REASON_ERROR,
2262 GFP_KERNEL);
2263 }
2264
2265 kfree(funcs);
2266
2267 return 0;
2268}
2269
f2753ddb
JB		 2270int ieee80211_reconfig(struct ieee80211_local *local)
2271{
2272 struct ieee80211_hw *hw = &local->hw;
2273 struct ieee80211_sub_if_data *sdata;
55de908a 2274 struct ieee80211_chanctx *ctx;
f2753ddb 2275 struct sta_info *sta;
2683d65b 2276 int res, i;
d888130a 2277 bool reconfig_due_to_wowlan = false;
d43c6b6e 2278 struct ieee80211_sub_if_data *sched_scan_sdata;
6ea0a69c 2279 struct cfg80211_sched_scan_request *sched_scan_req;
d43c6b6e 2280 bool sched_scan_stopped = false;
b0485e9f 2281 bool suspended = local->suspended;
d888130a 2282
0f8b8245
EP		 2283 /* nothing to do if HW shouldn't run */
2284 if (!local->open_count)
2285 goto wake_up;
2286
8f21b0ad 2287#ifdef CONFIG_PM
b0485e9f 2288 if (suspended)
ceb99fe0 2289 local->resuming = true;
f2753ddb 2290
eecc4800 2291 if (local->wowlan) {
b0485e9f
EP		 2292 /*
2293 * In the wowlan case, both mac80211 and the device
2294 * are functional when the resume op is called, so
2295 * clear local->suspended so the device could operate
2296 * normally (e.g. pass rx frames).
2297 */
2298 local->suspended = false;
eecc4800 2299 res = drv_resume(local);
27b3eb9c 2300 local->wowlan = false;
eecc4800
JB		 2301 if (res < 0) {
2302 local->resuming = false;
2303 return res;
2304 }
2305 if (res == 0)
2306 goto wake_up;
2307 WARN_ON(res > 1);
2308 /*
2309 * res is 1, which means the driver requested
2310 * to go through a regular reset on wakeup.
b0485e9f 2311 * restore local->suspended in this case.
eecc4800 2312 */
d888130a 2313 reconfig_due_to_wowlan = true;
b0485e9f 2314 local->suspended = true;
eecc4800
JB		 2315 }
2316#endif
f2753ddb 2317
43d6df00
EP		 2318 /*
2319 * In case of hw_restart during suspend (without wowlan),
2320 * cancel restart work, as we are reconfiguring the device
2321 * anyway.
2322 * Note that restart_work is scheduled on a frozen workqueue,
2323 * so we can't deadlock in this case.
2324 */
2325 if (suspended && local->in_reconfig && !reconfig_due_to_wowlan)
2326 cancel_work_sync(&local->restart_work);
2327
968a76ce
EP		 2328 local->started = false;
2329
94f9b97b
JB		 2330 /*
2331 * Upon resume hardware can sometimes be goofy due to
2332 * various platform / driver / bus issues, so restarting
2333 * the device may at times not work immediately. Propagate
2334 * the error.
2335 */
2336 res = drv_start(local);
2337 if (res) {
b0485e9f 2338 if (suspended)
f6837ba8
JB		 2339 WARN(1, "Hardware became unavailable upon resume. This could be a software issue prior to suspend or a hardware issue.\n");
2340 else
2341 WARN(1, "Hardware became unavailable during restart.\n");
2342 ieee80211_handle_reconfig_failure(local);
94f9b97b 2343 return res;
f2753ddb
JB		 2344 }
2345
7f281975
YAP		 2346 /* setup fragmentation threshold */
2347 drv_set_frag_threshold(local, hw->wiphy->frag_threshold);
2348
2349 /* setup RTS threshold */
2350 drv_set_rts_threshold(local, hw->wiphy->rts_threshold);
2351
2352 /* reset coverage class */
2353 drv_set_coverage_class(local, hw->wiphy->coverage_class);
2354
94f9b97b
JB		 2355 ieee80211_led_radio(local, true);
2356 ieee80211_mod_tpt_led_trig(local,
2357 IEEE80211_TPT_LEDTRIG_FL_RADIO, 0);
2358
f2753ddb 2359 /* add interfaces */
4b6f1dd6
JB		 2360 sdata = rtnl_dereference(local->monitor_sdata);
2361 if (sdata) {
3c3e21e7
JB		 2362 /* in HW restart it exists already */
2363 WARN_ON(local->resuming);
4b6f1dd6
JB		 2364 res = drv_add_interface(local, sdata);
2365 if (WARN_ON(res)) {
0c2bef46 2366 RCU_INIT_POINTER(local->monitor_sdata, NULL);
4b6f1dd6
JB		 2367 synchronize_net();
2368 kfree(sdata);
2369 }
2370 }
2371
f2753ddb
JB		 2372 list_for_each_entry(sdata, &local->interfaces, list) {
2373 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
2374 sdata->vif.type != NL80211_IFTYPE_MONITOR &&
c8fff3dc 2375 ieee80211_sdata_running(sdata)) {
7b7eab6f 2376 res = drv_add_interface(local, sdata);
c8fff3dc
LC		 2377 if (WARN_ON(res))
2378 break;
2379 }
2380 }
2381
2382 /* If adding any of the interfaces failed above, roll back and
2383 * report failure.
2384 */
2385 if (res) {
2386 list_for_each_entry_continue_reverse(sdata, &local->interfaces,
2387 list)
2388 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
2389 sdata->vif.type != NL80211_IFTYPE_MONITOR &&
2390 ieee80211_sdata_running(sdata))
2391 drv_remove_interface(local, sdata);
2392 ieee80211_handle_reconfig_failure(local);
2393 return res;
f2753ddb
JB		 2394 }
2395
55de908a 2396 /* add channel contexts */
f0dea9c7
AS		 2397 if (local->use_chanctx) {
2398 mutex_lock(&local->chanctx_mtx);
2399 list_for_each_entry(ctx, &local->chanctx_list, list)
5bcae31d
MK		 2400 if (ctx->replace_state !=
2401 IEEE80211_CHANCTX_REPLACES_OTHER)
2402 WARN_ON(drv_add_chanctx(local, ctx));
f0dea9c7 2403 mutex_unlock(&local->chanctx_mtx);
55de908a 2404
7df180f7
ZG		 2405 sdata = rtnl_dereference(local->monitor_sdata);
2406 if (sdata && ieee80211_sdata_running(sdata))
2407 ieee80211_assign_chanctx(local, sdata);
2408 }
fe5f2559 2409
f2753ddb
JB		 2410 /* reconfigure hardware */
2411 ieee80211_hw_config(local, ~0);
2412
f2753ddb 2413 ieee80211_configure_filter(local);
f2753ddb
JB		 2414
2415 /* Finally also reconfigure all the BSS information */
2416 list_for_each_entry(sdata, &local->interfaces, list) {
ac8dd506
JB		 2417 u32 changed;
2418
9607e6b6 2419 if (!ieee80211_sdata_running(sdata))
f2753ddb 2420 continue;
ac8dd506 2421
1ea2c864
JB		 2422 ieee80211_assign_chanctx(local, sdata);
2423
2424 switch (sdata->vif.type) {
2425 case NL80211_IFTYPE_AP_VLAN:
2426 case NL80211_IFTYPE_MONITOR:
2427 break;
4926b51b
JB		 2428 case NL80211_IFTYPE_ADHOC:
2429 if (sdata->vif.bss_conf.ibss_joined)
2430 WARN_ON(drv_join_ibss(local, sdata));
fc0561dc 2431 fallthrough;
1ea2c864
JB		 2432 default:
2433 ieee80211_reconfig_stations(sdata);
fc0561dc 2434 fallthrough;
1ea2c864
JB		 2435 case NL80211_IFTYPE_AP: /* AP stations are handled later */
2436 for (i = 0; i < IEEE80211_NUM_ACS; i++)
2437 drv_conf_tx(local, sdata, i,
2438 &sdata->tx_conf[i]);
2439 break;
2440 }
2441
ac8dd506
JB		 2442 /* common change flags for all interface types */
2443 changed = BSS_CHANGED_ERP_CTS_PROT |
2444 BSS_CHANGED_ERP_PREAMBLE |
2445 BSS_CHANGED_ERP_SLOT |
2446 BSS_CHANGED_HT |
2447 BSS_CHANGED_BASIC_RATES |
2448 BSS_CHANGED_BEACON_INT |
2449 BSS_CHANGED_BSSID |
4ced3f74 2450 BSS_CHANGED_CQM |
55de47f6 2451 BSS_CHANGED_QOS |
1ea6f9c0 2452 BSS_CHANGED_IDLE |
dcbe73ca
PKC		 2453 BSS_CHANGED_TXPOWER |
2454 BSS_CHANGED_MCAST_RATE;
ac8dd506 2455
b5a33d52 2456 if (sdata->vif.mu_mimo_owner)
23a1f8d4
SS		 2457 changed |= BSS_CHANGED_MU_GROUPS;
2458
f2753ddb
JB		 2459 switch (sdata->vif.type) {
2460 case NL80211_IFTYPE_STATION:
0d392e93 2461 changed |= BSS_CHANGED_ASSOC |
ab095877
EP		 2462 BSS_CHANGED_ARP_FILTER |
2463 BSS_CHANGED_PS;
c65dd147 2464
989c6505
AB		 2465 /* Re-send beacon info report to the driver */
2466 if (sdata->u.mgd.have_beacon)
2467 changed |= BSS_CHANGED_BEACON_INFO;
c65dd147 2468
e38a017b
AS		 2469 if (sdata->vif.bss_conf.max_idle_period ||
2470 sdata->vif.bss_conf.protected_keep_alive)
2471 changed |= BSS_CHANGED_KEEP_ALIVE;
2472
8d61ffa5 2473 sdata_lock(sdata);
ac8dd506 2474 ieee80211_bss_info_change_notify(sdata, changed);
8d61ffa5 2475 sdata_unlock(sdata);
ac8dd506 2476 break;
6e0bd6c3 2477 case NL80211_IFTYPE_OCB:
239281f8
RL		 2478 changed |= BSS_CHANGED_OCB;
2479 ieee80211_bss_info_change_notify(sdata, changed);
6e0bd6c3 2480 break;
f2753ddb 2481 case NL80211_IFTYPE_ADHOC:
ac8dd506 2482 changed |= BSS_CHANGED_IBSS;
fc0561dc 2483 fallthrough;
f2753ddb 2484 case NL80211_IFTYPE_AP:
339afbf4 2485 changed |= BSS_CHANGED_SSID | BSS_CHANGED_P2P_PS;
e7979ac7 2486
bc847970
PKC		 2487 if (sdata->vif.bss_conf.ftm_responder == 1 &&
2488 wiphy_ext_feature_isset(sdata->local->hw.wiphy,
2489 NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER))
2490 changed |= BSS_CHANGED_FTM_RESPONDER;
2491
1041638f 2492 if (sdata->vif.type == NL80211_IFTYPE_AP) {
e7979ac7
AN		 2493 changed |= BSS_CHANGED_AP_PROBE_RESP;
2494
1041638f
JB		 2495 if (rcu_access_pointer(sdata->u.ap.beacon))
2496 drv_start_ap(local, sdata);
2497 }
fc0561dc 2498 fallthrough;
f2753ddb 2499 case NL80211_IFTYPE_MESH_POINT:
8da34932
JB		 2500 if (sdata->vif.bss_conf.enable_beacon) {
2501 changed |= BSS_CHANGED_BEACON |
2502 BSS_CHANGED_BEACON_ENABLED;
2503 ieee80211_bss_info_change_notify(sdata, changed);
2504 }
f2753ddb 2505 break;
167e33f4
AB		 2506 case NL80211_IFTYPE_NAN:
2507 res = ieee80211_reconfig_nan(sdata);
2508 if (res < 0) {
2509 ieee80211_handle_reconfig_failure(local);
2510 return res;
2511 }
2512 break;
f2753ddb
JB		 2513 case NL80211_IFTYPE_AP_VLAN:
2514 case NL80211_IFTYPE_MONITOR:
98104fde 2515 case NL80211_IFTYPE_P2P_DEVICE:
b205786e 2516 /* nothing to do */
f142c6b9 2517 break;
f2753ddb 2518 case NL80211_IFTYPE_UNSPECIFIED:
2e161f78 2519 case NUM_NL80211_IFTYPES:
2ca27bcf
JB		 2520 case NL80211_IFTYPE_P2P_CLIENT:
2521 case NL80211_IFTYPE_P2P_GO:
70d9c599 2522 case NL80211_IFTYPE_WDS:
f2753ddb
JB		 2523 WARN_ON(1);
2524 break;
2525 }
2526 }
2527
4a733ef1 2528 ieee80211_recalc_ps(local);
8e1b23b9 2529
6e1b1b24
EP		 2530 /*
2531 * The sta might be in psm against the ap (e.g. because
2532 * this was the state before a hw restart), so we
2533 * explicitly send a null packet in order to make sure
2534 * it'll sync against the ap (and get out of psm).
2535 */
2536 if (!(local->hw.conf.flags & IEEE80211_CONF_PS)) {
2537 list_for_each_entry(sdata, &local->interfaces, list) {
2538 if (sdata->vif.type != NL80211_IFTYPE_STATION)
2539 continue;
20f544ee
JB		 2540 if (!sdata->u.mgd.associated)
2541 continue;
6e1b1b24 2542
076cdcb1 2543 ieee80211_send_nullfunc(local, sdata, false);
6e1b1b24
EP		 2544 }
2545 }
2546
2e8d397e
AN		 2547 /* APs are now beaconing, add back stations */
2548 mutex_lock(&local->sta_mtx);
2549 list_for_each_entry(sta, &local->sta_list, list) {
2550 enum ieee80211_sta_state state;
2551
2552 if (!sta->uploaded)
2553 continue;
2554
19103a4b 2555 if (sta->sdata->vif.type != NL80211_IFTYPE_AP &&
2556 sta->sdata->vif.type != NL80211_IFTYPE_AP_VLAN)
2e8d397e
AN		 2557 continue;
2558
2559 for (state = IEEE80211_STA_NOTEXIST;
2560 state < sta->sta_state; state++)
2561 WARN_ON(drv_sta_state(local, sta->sdata, sta, state,
2562 state + 1));
2563 }
2564 mutex_unlock(&local->sta_mtx);
2565
7b21aea0 2566 /* add back keys */
f9dca80b 2567 list_for_each_entry(sdata, &local->interfaces, list)
624ff4b2 2568 ieee80211_reenable_keys(sdata);
7b21aea0 2569
0d440ea2
EP		 2570 /* Reconfigure sched scan if it was interrupted by FW restart */
2571 mutex_lock(&local->mtx);
2572 sched_scan_sdata = rcu_dereference_protected(local->sched_scan_sdata,
2573 lockdep_is_held(&local->mtx));
2574 sched_scan_req = rcu_dereference_protected(local->sched_scan_req,
2575 lockdep_is_held(&local->mtx));
2576 if (sched_scan_sdata && sched_scan_req)
2577 /*
2578 * Sched scan stopped, but we don't want to report it. Instead,
2579 * we're trying to reschedule. However, if more than one scan
2580 * plan was set, we cannot reschedule since we don't know which
2581 * scan plan was currently running (and some scan plans may have
2582 * already finished).
2583 */
2584 if (sched_scan_req->n_scan_plans > 1 ||
2585 __ieee80211_request_sched_scan_start(sched_scan_sdata,
b9f628fc
EP		 2586 sched_scan_req)) {
2587 RCU_INIT_POINTER(local->sched_scan_sdata, NULL);
2588 RCU_INIT_POINTER(local->sched_scan_req, NULL);
0d440ea2 2589 sched_scan_stopped = true;
b9f628fc 2590 }
0d440ea2
EP		 2591 mutex_unlock(&local->mtx);
2592
2593 if (sched_scan_stopped)
a05829a7 2594 cfg80211_sched_scan_stopped_locked(local->hw.wiphy, 0);
0d440ea2 2595
c6209488 2596 wake_up:
04800ada 2597
3c3e21e7
JB		 2598 if (local->monitors == local->open_count && local->monitors > 0)
2599 ieee80211_add_virtual_monitor(local);
2600
2a419056
JB		 2601 /*
2602 * Clear the WLAN_STA_BLOCK_BA flag so new aggregation
2603 * sessions can be established after a resume.
2604 *
2605 * Also tear down aggregation sessions since reconfiguring
2606 * them in a hardware restart scenario is not easily done
2607 * right now, and the hardware will have lost information
2608 * about the sessions, but we and the AP still think they
2609 * are active. This is really a workaround though.
2610 */
30686bf7 2611 if (ieee80211_hw_check(hw, AMPDU_AGGREGATION)) {
2a419056
JB		 2612 mutex_lock(&local->sta_mtx);
2613
2614 list_for_each_entry(sta, &local->sta_list, list) {
27392719
EP		 2615 if (!local->resuming)
2616 ieee80211_sta_tear_down_BA_sessions(
2617 sta, AGG_STOP_LOCAL_REQUEST);
c2c98fde 2618 clear_sta_flag(sta, WLAN_STA_BLOCK_BA);
74e2bd1f 2619 }
2a419056
JB		 2620
2621 mutex_unlock(&local->sta_mtx);
74e2bd1f 2622 }
74e2bd1f 2623
2316380f
SS		 2624 if (local->in_reconfig) {
2625 local->in_reconfig = false;
2626 barrier();
2627
2628 /* Restart deferred ROCs */
2629 mutex_lock(&local->mtx);
2630 ieee80211_start_next_roc(local);
2631 mutex_unlock(&local->mtx);
f8891461
NG		 2632
2633 /* Requeue all works */
2634 list_for_each_entry(sdata, &local->interfaces, list)
2635 ieee80211_queue_work(&local->hw, &sdata->work);
2316380f
SS		 2636 }
2637
445ea4e8 2638 ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
cca07b00
LC		 2639 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
2640 false);
f2753ddb 2641
5bb644a0
JB		 2642 /*
2643 * If this is for hw restart things are still running.
2644 * We may want to change that later, however.
2645 */
b0485e9f 2646 if (local->open_count && (!suspended || reconfig_due_to_wowlan))
cf2c92d8 2647 drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_RESTART);
8f21b0ad 2648
b0485e9f 2649 if (!suspended)
5bb644a0
JB		 2650 return 0;
2651
2652#ifdef CONFIG_PM
ceb99fe0 2653 /* first set suspended false, then resuming */
5bb644a0 2654 local->suspended = false;
ceb99fe0
JB		 2655 mb();
2656 local->resuming = false;
5bb644a0 2657
74430f94 2658 ieee80211_flush_completed_scan(local, false);
9120d94e 2659
0f8b8245 2660 if (local->open_count && !reconfig_due_to_wowlan)
cf2c92d8
EP		 2661 drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_SUSPEND);
2662
b8360ab8
JB		 2663 list_for_each_entry(sdata, &local->interfaces, list) {
2664 if (!ieee80211_sdata_running(sdata))
2665 continue;
2666 if (sdata->vif.type == NL80211_IFTYPE_STATION)
2667 ieee80211_sta_restart(sdata);
2668 }
2669
26d59535 2670 mod_timer(&local->sta_cleanup, jiffies + 1);
5bb644a0
JB		 2671#else
2672 WARN_ON(1);
2673#endif
d43c6b6e 2674
f2753ddb
JB		 2675 return 0;
2676}
42935eca 2677
95acac61
JB		 2678void ieee80211_resume_disconnect(struct ieee80211_vif *vif)
2679{
2680 struct ieee80211_sub_if_data *sdata;
2681 struct ieee80211_local *local;
2682 struct ieee80211_key *key;
2683
2684 if (WARN_ON(!vif))
2685 return;
2686
2687 sdata = vif_to_sdata(vif);
2688 local = sdata->local;
2689
2690 if (WARN_ON(!local->resuming))
2691 return;
2692
2693 if (WARN_ON(vif->type != NL80211_IFTYPE_STATION))
2694 return;
2695
2696 sdata->flags |= IEEE80211_SDATA_DISCONNECT_RESUME;
2697
2698 mutex_lock(&local->key_mtx);
2699 list_for_each_entry(key, &sdata->key_list, list)
2700 key->flags |= KEY_FLAG_TAINTED;
2701 mutex_unlock(&local->key_mtx);
2702}
2703EXPORT_SYMBOL_GPL(ieee80211_resume_disconnect);
2704
04ecd257 2705void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata)
0f78231b 2706{
04ecd257
JB		 2707 struct ieee80211_local *local = sdata->local;
2708 struct ieee80211_chanctx_conf *chanctx_conf;
2709 struct ieee80211_chanctx *chanctx;
025e6be2 2710
04ecd257 2711 mutex_lock(&local->chanctx_mtx);
0f78231b 2712
04ecd257
JB		 2713 chanctx_conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
2714 lockdep_is_held(&local->chanctx_mtx));
0f78231b 2715
c189a685
AO		 2716 /*
2717 * This function can be called from a work, thus it may be possible
2718 * that the chanctx_conf is removed (due to a disconnection, for
2719 * example).
2720 * So nothing should be done in such case.
2721 */
2722 if (!chanctx_conf)
5d8e4237 2723 goto unlock;
0f78231b 2724
04ecd257
JB		 2725 chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf);
2726 ieee80211_recalc_smps_chanctx(local, chanctx);
5d8e4237 2727 unlock:
04ecd257 2728 mutex_unlock(&local->chanctx_mtx);
0f78231b 2729}
8e664fb3 2730
21f659bf
EP		 2731void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata)
2732{
2733 struct ieee80211_local *local = sdata->local;
2734 struct ieee80211_chanctx_conf *chanctx_conf;
2735 struct ieee80211_chanctx *chanctx;
2736
2737 mutex_lock(&local->chanctx_mtx);
2738
2739 chanctx_conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
2740 lockdep_is_held(&local->chanctx_mtx));
2741
2742 if (WARN_ON_ONCE(!chanctx_conf))
2743 goto unlock;
2744
2745 chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf);
2746 ieee80211_recalc_chanctx_min_def(local, chanctx);
2747 unlock:
2748 mutex_unlock(&local->chanctx_mtx);
2749}
2750
8e664fb3
JB		 2751size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset)
2752{
2753 size_t pos = offset;
2754
2755 while (pos < ielen && ies[pos] != WLAN_EID_VENDOR_SPECIFIC)
2756 pos += 2 + ies[pos + 1];
2757
2758 return pos;
2759}
615f7b9b
MV		 2760
2761static void _ieee80211_enable_rssi_reports(struct ieee80211_sub_if_data *sdata,
2762 int rssi_min_thold,
2763 int rssi_max_thold)
2764{
2765 trace_api_enable_rssi_reports(sdata, rssi_min_thold, rssi_max_thold);
2766
2767 if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
2768 return;
2769
2770 /*
2771 * Scale up threshold values before storing it, as the RSSI averaging
2772 * algorithm uses a scaled up value as well. Change this scaling
2773 * factor if the RSSI averaging algorithm changes.
2774 */
2775 sdata->u.mgd.rssi_min_thold = rssi_min_thold*16;
2776 sdata->u.mgd.rssi_max_thold = rssi_max_thold*16;
2777}
2778
2779void ieee80211_enable_rssi_reports(struct ieee80211_vif *vif,
2780 int rssi_min_thold,
2781 int rssi_max_thold)
2782{
2783 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2784
2785 WARN_ON(rssi_min_thold == rssi_max_thold ||
2786 rssi_min_thold > rssi_max_thold);
2787
2788 _ieee80211_enable_rssi_reports(sdata, rssi_min_thold,
2789 rssi_max_thold);
2790}
2791EXPORT_SYMBOL(ieee80211_enable_rssi_reports);
2792
2793void ieee80211_disable_rssi_reports(struct ieee80211_vif *vif)
2794{
2795 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2796
2797 _ieee80211_enable_rssi_reports(sdata, 0, 0);
2798}
2799EXPORT_SYMBOL(ieee80211_disable_rssi_reports);
768db343 2800
ef96a842 2801u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
42e7aa77
AS		 2802 u16 cap)
2803{
2804 __le16 tmp;
2805
2806 *pos++ = WLAN_EID_HT_CAPABILITY;
2807 *pos++ = sizeof(struct ieee80211_ht_cap);
2808 memset(pos, 0, sizeof(struct ieee80211_ht_cap));
2809
2810 /* capability flags */
2811 tmp = cpu_to_le16(cap);
2812 memcpy(pos, &tmp, sizeof(u16));
2813 pos += sizeof(u16);
2814
2815 /* AMPDU parameters */
ef96a842
BG		 2816 *pos++ = ht_cap->ampdu_factor |
2817 (ht_cap->ampdu_density <<
42e7aa77
AS		 2818 IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT);
2819
2820 /* MCS set */
ef96a842
BG		 2821 memcpy(pos, &ht_cap->mcs, sizeof(ht_cap->mcs));
2822 pos += sizeof(ht_cap->mcs);
42e7aa77
AS		 2823
2824 /* extended capabilities */
2825 pos += sizeof(__le16);
2826
2827 /* BF capabilities */
2828 pos += sizeof(__le32);
2829
2830 /* antenna selection */
2831 pos += sizeof(u8);
2832
2833 return pos;
2834}
2835
ba0afa2f 2836u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
cc3983d8 2837 u32 cap)
ba0afa2f
MP		 2838{
2839 __le32 tmp;
2840
2841 *pos++ = WLAN_EID_VHT_CAPABILITY;
d4950281
MP		 2842 *pos++ = sizeof(struct ieee80211_vht_cap);
2843 memset(pos, 0, sizeof(struct ieee80211_vht_cap));
ba0afa2f
MP		 2844
2845 /* capability flags */
2846 tmp = cpu_to_le32(cap);
2847 memcpy(pos, &tmp, sizeof(u32));
2848 pos += sizeof(u32);
2849
2850 /* VHT MCS set */
2851 memcpy(pos, &vht_cap->vht_mcs, sizeof(vht_cap->vht_mcs));
2852 pos += sizeof(vht_cap->vht_mcs);
2853
2854 return pos;
2855}
2856
60ad72da
SE		 2857u8 ieee80211_ie_len_he_cap(struct ieee80211_sub_if_data *sdata, u8 iftype)
2858{
2859 const struct ieee80211_sta_he_cap *he_cap;
2860 struct ieee80211_supported_band *sband;
2861 u8 n;
2862
2863 sband = ieee80211_get_sband(sdata);
2864 if (!sband)
2865 return 0;
2866
2867 he_cap = ieee80211_get_he_iftype_cap(sband, iftype);
2868 if (!he_cap)
2869 return 0;
2870
2871 n = ieee80211_he_mcs_nss_size(&he_cap->he_cap_elem);
2872 return 2 + 1 +
2873 sizeof(he_cap->he_cap_elem) + n +
2874 ieee80211_he_ppe_size(he_cap->ppe_thres[0],
2875 he_cap->he_cap_elem.phy_cap_info);
2876}
2877
41cbb0f5
LC		 2878u8 *ieee80211_ie_build_he_cap(u8 *pos,
2879 const struct ieee80211_sta_he_cap *he_cap,
2880 u8 *end)
2881{
2882 u8 n;
2883 u8 ie_len;
2884 u8 *orig_pos = pos;
2885
2886 /* Make sure we have place for the IE */
2887 /*
2888 * TODO: the 1 added is because this temporarily is under the EXTENSION
2889 * IE. Get rid of it when it moves.
2890 */
2891 if (!he_cap)
2892 return orig_pos;
2893
2894 n = ieee80211_he_mcs_nss_size(&he_cap->he_cap_elem);
2895 ie_len = 2 + 1 +
2896 sizeof(he_cap->he_cap_elem) + n +
2897 ieee80211_he_ppe_size(he_cap->ppe_thres[0],
2898 he_cap->he_cap_elem.phy_cap_info);
2899
2900 if ((end - pos) < ie_len)
2901 return orig_pos;
2902
2903 *pos++ = WLAN_EID_EXTENSION;
2904 pos++; /* We'll set the size later below */
2905 *pos++ = WLAN_EID_EXT_HE_CAPABILITY;
2906
2907 /* Fixed data */
2908 memcpy(pos, &he_cap->he_cap_elem, sizeof(he_cap->he_cap_elem));
2909 pos += sizeof(he_cap->he_cap_elem);
2910
2911 memcpy(pos, &he_cap->he_mcs_nss_supp, n);
2912 pos += n;
2913
2914 /* Check if PPE Threshold should be present */
2915 if ((he_cap->he_cap_elem.phy_cap_info[6] &
2916 IEEE80211_HE_PHY_CAP6_PPE_THRESHOLD_PRESENT) == 0)
2917 goto end;
2918
2919 /*
2920 * Calculate how many PPET16/PPET8 pairs are to come. Algorithm:
2921 * (NSS_M1 + 1) x (num of 1 bits in RU_INDEX_BITMASK)
2922 */
2923 n = hweight8(he_cap->ppe_thres[0] &
2924 IEEE80211_PPE_THRES_RU_INDEX_BITMASK_MASK);
2925 n *= (1 + ((he_cap->ppe_thres[0] & IEEE80211_PPE_THRES_NSS_MASK) >>
2926 IEEE80211_PPE_THRES_NSS_POS));
2927
2928 /*
2929 * Each pair is 6 bits, and we need to add the 7 "header" bits to the
2930 * total size.
2931 */
2932 n = (n * IEEE80211_PPE_THRES_INFO_PPET_SIZE * 2) + 7;
2933 n = DIV_ROUND_UP(n, 8);
2934
2935 /* Copy PPE Thresholds */
2936 memcpy(pos, &he_cap->ppe_thres, n);
2937 pos += n;
2938
2939end:
2940 orig_pos[1] = (pos - orig_pos) - 2;
2941 return pos;
2942}
2943
24a2042c
RM		 2944void ieee80211_ie_build_he_6ghz_cap(struct ieee80211_sub_if_data *sdata,
2945 struct sk_buff *skb)
2946{
2947 struct ieee80211_supported_band *sband;
2948 const struct ieee80211_sband_iftype_data *iftd;
2949 enum nl80211_iftype iftype = ieee80211_vif_type_p2p(&sdata->vif);
2950 u8 *pos;
2951 u16 cap;
2952
2953 sband = ieee80211_get_sband(sdata);
2954 if (!sband)
2955 return;
2956
2957 iftd = ieee80211_get_sband_iftype_data(sband, iftype);
2958 if (WARN_ON(!iftd))
2959 return;
2960
65ad3ef9
RM		 2961 /* Check for device HE 6 GHz capability before adding element */
2962 if (!iftd->he_6ghz_capa.capa)
2963 return;
2964
24a2042c
RM		 2965 cap = le16_to_cpu(iftd->he_6ghz_capa.capa);
2966 cap &= ~IEEE80211_HE_6GHZ_CAP_SM_PS;
2967
2968 switch (sdata->smps_mode) {
2969 case IEEE80211_SMPS_AUTOMATIC:
2970 case IEEE80211_SMPS_NUM_MODES:
2971 WARN_ON(1);
fc0561dc 2972 fallthrough;
24a2042c
RM		 2973 case IEEE80211_SMPS_OFF:
2974 cap |= u16_encode_bits(WLAN_HT_CAP_SM_PS_DISABLED,
2975 IEEE80211_HE_6GHZ_CAP_SM_PS);
2976 break;
2977 case IEEE80211_SMPS_STATIC:
2978 cap |= u16_encode_bits(WLAN_HT_CAP_SM_PS_STATIC,
2979 IEEE80211_HE_6GHZ_CAP_SM_PS);
2980 break;
2981 case IEEE80211_SMPS_DYNAMIC:
2982 cap |= u16_encode_bits(WLAN_HT_CAP_SM_PS_DYNAMIC,
2983 IEEE80211_HE_6GHZ_CAP_SM_PS);
2984 break;
2985 }
2986
2987 pos = skb_put(skb, 2 + 1 + sizeof(cap));
2ad2274c
IP		 2988 ieee80211_write_he_6ghz_cap(pos, cpu_to_le16(cap),
2989 pos + 2 + 1 + sizeof(cap));
24a2042c
RM		 2990}
2991
074d46d1 2992u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
4bf88530 2993 const struct cfg80211_chan_def *chandef,
57f255f5 2994 u16 prot_mode, bool rifs_mode)
42e7aa77 2995{
074d46d1 2996 struct ieee80211_ht_operation *ht_oper;
42e7aa77 2997 /* Build HT Information */
074d46d1
JB		 2998 *pos++ = WLAN_EID_HT_OPERATION;
2999 *pos++ = sizeof(struct ieee80211_ht_operation);
3000 ht_oper = (struct ieee80211_ht_operation *)pos;
4bf88530
JB		 3001 ht_oper->primary_chan = ieee80211_frequency_to_channel(
3002 chandef->chan->center_freq);
3003 switch (chandef->width) {
3004 case NL80211_CHAN_WIDTH_160:
3005 case NL80211_CHAN_WIDTH_80P80:
3006 case NL80211_CHAN_WIDTH_80:
3007 case NL80211_CHAN_WIDTH_40:
3008 if (chandef->center_freq1 > chandef->chan->center_freq)
3009 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
3010 else
3011 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
42e7aa77 3012 break;
42e7aa77 3013 default:
074d46d1 3014 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_NONE;
42e7aa77
AS		 3015 break;
3016 }
aee286c2 3017 if (ht_cap->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 &&
4bf88530
JB		 3018 chandef->width != NL80211_CHAN_WIDTH_20_NOHT &&
3019 chandef->width != NL80211_CHAN_WIDTH_20)
074d46d1 3020 ht_oper->ht_param |= IEEE80211_HT_PARAM_CHAN_WIDTH_ANY;
ff3cc5f4 3021
57f255f5
AN		 3022 if (rifs_mode)
3023 ht_oper->ht_param |= IEEE80211_HT_PARAM_RIFS_MODE;
3024
431e3154 3025 ht_oper->operation_mode = cpu_to_le16(prot_mode);
074d46d1 3026 ht_oper->stbc_param = 0x0000;
42e7aa77
AS		 3027
3028 /* It seems that Basic MCS set and Supported MCS set
3029 are identical for the first 10 bytes */
074d46d1
JB		 3030 memset(&ht_oper->basic_set, 0, 16);
3031 memcpy(&ht_oper->basic_set, &ht_cap->mcs, 10);
42e7aa77 3032
074d46d1 3033 return pos + sizeof(struct ieee80211_ht_operation);
42e7aa77
AS		 3034}
3035
75d627d5
SW		 3036void ieee80211_ie_build_wide_bw_cs(u8 *pos,
3037 const struct cfg80211_chan_def *chandef)
3038{
3039 *pos++ = WLAN_EID_WIDE_BW_CHANNEL_SWITCH; /* EID */
3040 *pos++ = 3; /* IE length */
3041 /* New channel width */
3042 switch (chandef->width) {
3043 case NL80211_CHAN_WIDTH_80:
3044 *pos++ = IEEE80211_VHT_CHANWIDTH_80MHZ;
3045 break;
3046 case NL80211_CHAN_WIDTH_160:
3047 *pos++ = IEEE80211_VHT_CHANWIDTH_160MHZ;
3048 break;
3049 case NL80211_CHAN_WIDTH_80P80:
3050 *pos++ = IEEE80211_VHT_CHANWIDTH_80P80MHZ;
3051 break;
3052 default:
3053 *pos++ = IEEE80211_VHT_CHANWIDTH_USE_HT;
3054 }
3055
3056 /* new center frequency segment 0 */
3057 *pos++ = ieee80211_frequency_to_channel(chandef->center_freq1);
3058 /* new center frequency segment 1 */
3059 if (chandef->center_freq2)
3060 *pos++ = ieee80211_frequency_to_channel(chandef->center_freq2);
3061 else
3062 *pos++ = 0;
3063}
3064
fb28ec0c
AN		 3065u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
3066 const struct cfg80211_chan_def *chandef)
3067{
3068 struct ieee80211_vht_operation *vht_oper;
3069
3070 *pos++ = WLAN_EID_VHT_OPERATION;
3071 *pos++ = sizeof(struct ieee80211_vht_operation);
3072 vht_oper = (struct ieee80211_vht_operation *)pos;
2fb51c35 3073 vht_oper->center_freq_seg0_idx = ieee80211_frequency_to_channel(
fb28ec0c
AN		 3074 chandef->center_freq1);
3075 if (chandef->center_freq2)
2fb51c35 3076 vht_oper->center_freq_seg1_idx =
fb28ec0c 3077 ieee80211_frequency_to_channel(chandef->center_freq2);
f020ae40 3078 else
2fb51c35 3079 vht_oper->center_freq_seg1_idx = 0x00;
fb28ec0c
AN		 3080
3081 switch (chandef->width) {
3082 case NL80211_CHAN_WIDTH_160:
23665aaf
JM		 3083 /*
3084 * Convert 160 MHz channel width to new style as interop
3085 * workaround.
3086 */
3087 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ;
2fb51c35 3088 vht_oper->center_freq_seg1_idx = vht_oper->center_freq_seg0_idx;
23665aaf 3089 if (chandef->chan->center_freq < chandef->center_freq1)
2fb51c35 3090 vht_oper->center_freq_seg0_idx -= 8;
23665aaf 3091 else
2fb51c35 3092 vht_oper->center_freq_seg0_idx += 8;
fb28ec0c
AN		 3093 break;
3094 case NL80211_CHAN_WIDTH_80P80:
23665aaf
JM		 3095 /*
3096 * Convert 80+80 MHz channel width to new style as interop
3097 * workaround.
3098 */
3099 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ;
fb28ec0c
AN		 3100 break;
3101 case NL80211_CHAN_WIDTH_80:
3102 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ;
3103 break;
3104 default:
3105 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_USE_HT;
3106 break;
3107 }
3108
3109 /* don't require special VHT peer rates */
3110 vht_oper->basic_mcs_set = cpu_to_le16(0xffff);
3111
3112 return pos + sizeof(struct ieee80211_vht_operation);
3113}
3114
d1b7524b 3115u8 *ieee80211_ie_build_he_oper(u8 *pos, struct cfg80211_chan_def *chandef)
60ad72da
SE		 3116{
3117 struct ieee80211_he_operation *he_oper;
d1b7524b 3118 struct ieee80211_he_6ghz_oper *he_6ghz_op;
60ad72da 3119 u32 he_oper_params;
d1b7524b
RM		 3120 u8 ie_len = 1 + sizeof(struct ieee80211_he_operation);
3121
3122 if (chandef->chan->band == NL80211_BAND_6GHZ)
3123 ie_len += sizeof(struct ieee80211_he_6ghz_oper);
60ad72da
SE		 3124
3125 *pos++ = WLAN_EID_EXTENSION;
d1b7524b 3126 *pos++ = ie_len;
60ad72da
SE		 3127 *pos++ = WLAN_EID_EXT_HE_OPERATION;
3128
3129 he_oper_params = 0;
3130 he_oper_params |= u32_encode_bits(1023, /* disabled */
3131 IEEE80211_HE_OPERATION_RTS_THRESHOLD_MASK);
3132 he_oper_params |= u32_encode_bits(1,
3133 IEEE80211_HE_OPERATION_ER_SU_DISABLE);
3134 he_oper_params |= u32_encode_bits(1,
3135 IEEE80211_HE_OPERATION_BSS_COLOR_DISABLED);
d1b7524b
RM		 3136 if (chandef->chan->band == NL80211_BAND_6GHZ)
3137 he_oper_params |= u32_encode_bits(1,
3138 IEEE80211_HE_OPERATION_6GHZ_OP_INFO);
60ad72da
SE		 3139
3140 he_oper = (struct ieee80211_he_operation *)pos;
3141 he_oper->he_oper_params = cpu_to_le32(he_oper_params);
3142
3143 /* don't require special HE peer rates */
3144 he_oper->he_mcs_nss_set = cpu_to_le16(0xffff);
d1b7524b 3145 pos += sizeof(struct ieee80211_he_operation);
60ad72da 3146
d1b7524b
RM		 3147 if (chandef->chan->band != NL80211_BAND_6GHZ)
3148 goto out;
60ad72da 3149
d1b7524b
RM		 3150 /* TODO add VHT operational */
3151 he_6ghz_op = (struct ieee80211_he_6ghz_oper *)pos;
3152 he_6ghz_op->minrate = 6; /* 6 Mbps */
3153 he_6ghz_op->primary =
3154 ieee80211_frequency_to_channel(chandef->chan->center_freq);
3155 he_6ghz_op->ccfs0 =
3156 ieee80211_frequency_to_channel(chandef->center_freq1);
3157 if (chandef->center_freq2)
3158 he_6ghz_op->ccfs1 =
3159 ieee80211_frequency_to_channel(chandef->center_freq2);
3160 else
3161 he_6ghz_op->ccfs1 = 0;
3162
3163 switch (chandef->width) {
3164 case NL80211_CHAN_WIDTH_160:
3165 /* Convert 160 MHz channel width to new style as interop
3166 * workaround.
3167 */
3168 he_6ghz_op->control =
3169 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_160MHZ;
3170 he_6ghz_op->ccfs1 = he_6ghz_op->ccfs0;
3171 if (chandef->chan->center_freq < chandef->center_freq1)
3172 he_6ghz_op->ccfs0 -= 8;
3173 else
3174 he_6ghz_op->ccfs0 += 8;
3175 fallthrough;
3176 case NL80211_CHAN_WIDTH_80P80:
3177 he_6ghz_op->control =
3178 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_160MHZ;
3179 break;
3180 case NL80211_CHAN_WIDTH_80:
3181 he_6ghz_op->control =
3182 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_80MHZ;
3183 break;
3184 case NL80211_CHAN_WIDTH_40:
3185 he_6ghz_op->control =
3186 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_40MHZ;
3187 break;
3188 default:
3189 he_6ghz_op->control =
3190 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_20MHZ;
3191 break;
3192 }
3193
3194 pos += sizeof(struct ieee80211_he_6ghz_oper);
3195
3196out:
3197 return pos;
60ad72da
SE		 3198}
3199
8ac3c704
JB		 3200bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper,
3201 struct cfg80211_chan_def *chandef)
42e7aa77
AS		 3202{
3203 enum nl80211_channel_type channel_type;
3204
8ac3c704
JB		 3205 if (!ht_oper)
3206 return false;
42e7aa77 3207
074d46d1 3208 switch (ht_oper->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) {
42e7aa77
AS		 3209 case IEEE80211_HT_PARAM_CHA_SEC_NONE:
3210 channel_type = NL80211_CHAN_HT20;
3211 break;
3212 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
3213 channel_type = NL80211_CHAN_HT40PLUS;
3214 break;
3215 case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
3216 channel_type = NL80211_CHAN_HT40MINUS;
3217 break;
3218 default:
3219 channel_type = NL80211_CHAN_NO_HT;
8ac3c704 3220 return false;
42e7aa77
AS		 3221 }
3222
8ac3c704
JB		 3223 cfg80211_chandef_create(chandef, chandef->chan, channel_type);
3224 return true;
42e7aa77
AS		 3225}
3226
2a333a0d 3227bool ieee80211_chandef_vht_oper(struct ieee80211_hw *hw, u32 vht_cap_info,
7eb26df2
JB		 3228 const struct ieee80211_vht_operation *oper,
3229 const struct ieee80211_ht_operation *htop,
8ac3c704 3230 struct cfg80211_chan_def *chandef)
abcff6ef 3231{
8ac3c704 3232 struct cfg80211_chan_def new = *chandef;
7eb26df2
JB		 3233 int cf0, cf1;
3234 int ccfs0, ccfs1, ccfs2;
3235 int ccf0, ccf1;
33181ea7
SB		 3236 u32 vht_cap;
3237 bool support_80_80 = false;
3238 bool support_160 = false;
2a333a0d
JB		 3239 u8 ext_nss_bw_supp = u32_get_bits(vht_cap_info,
3240 IEEE80211_VHT_CAP_EXT_NSS_BW_MASK);
3241 u8 supp_chwidth = u32_get_bits(vht_cap_info,
3242 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK);
8ac3c704 3243
7eb26df2 3244 if (!oper || !htop)
8ac3c704 3245 return false;
abcff6ef 3246
33181ea7
SB		 3247 vht_cap = hw->wiphy->bands[chandef->chan->band]->vht_cap.cap;
3248 support_160 = (vht_cap & (IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK |
3249 IEEE80211_VHT_CAP_EXT_NSS_BW_MASK));
3250 support_80_80 = ((vht_cap &
3251 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ) ||
3252 (vht_cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ &&
3253 vht_cap & IEEE80211_VHT_CAP_EXT_NSS_BW_MASK) ||
3254 ((vht_cap & IEEE80211_VHT_CAP_EXT_NSS_BW_MASK) >>
3255 IEEE80211_VHT_CAP_EXT_NSS_BW_SHIFT > 1));
7eb26df2
JB		 3256 ccfs0 = oper->center_freq_seg0_idx;
3257 ccfs1 = oper->center_freq_seg1_idx;
3258 ccfs2 = (le16_to_cpu(htop->operation_mode) &
3259 IEEE80211_HT_OP_MODE_CCFS2_MASK)
3260 >> IEEE80211_HT_OP_MODE_CCFS2_SHIFT;
3261
7eb26df2 3262 ccf0 = ccfs0;
2a333a0d
JB		 3263
3264 /* if not supported, parse as though we didn't understand it */
3265 if (!ieee80211_hw_check(hw, SUPPORTS_VHT_EXT_NSS_BW))
3266 ext_nss_bw_supp = 0;
3267
3268 /*
3269 * Cf. IEEE 802.11 Table 9-250
3270 *
3271 * We really just consider that because it's inefficient to connect
3272 * at a higher bandwidth than we'll actually be able to use.
3273 */
3274 switch ((supp_chwidth << 4) | ext_nss_bw_supp) {
3275 default:
3276 case 0x00:
3277 ccf1 = 0;
3278 support_160 = false;
3279 support_80_80 = false;
3280 break;
3281 case 0x01:
3282 support_80_80 = false;
fc0561dc 3283 fallthrough;
2a333a0d
JB		 3284 case 0x02:
3285 case 0x03:
7eb26df2 3286 ccf1 = ccfs2;
2a333a0d
JB		 3287 break;
3288 case 0x10:
3289 ccf1 = ccfs1;
3290 break;
3291 case 0x11:
3292 case 0x12:
3293 if (!ccfs1)
3294 ccf1 = ccfs2;
3295 else
3296 ccf1 = ccfs1;
3297 break;
3298 case 0x13:
3299 case 0x20:
3300 case 0x23:
3301 ccf1 = ccfs1;
3302 break;
3303 }
7eb26df2
JB		 3304
3305 cf0 = ieee80211_channel_to_frequency(ccf0, chandef->chan->band);
3306 cf1 = ieee80211_channel_to_frequency(ccf1, chandef->chan->band);
abcff6ef
JD		 3307
3308 switch (oper->chan_width) {
3309 case IEEE80211_VHT_CHANWIDTH_USE_HT:
7eb26df2 3310 /* just use HT information directly */
abcff6ef
JD		 3311 break;
3312 case IEEE80211_VHT_CHANWIDTH_80MHZ:
8ac3c704 3313 new.width = NL80211_CHAN_WIDTH_80;
7eb26df2 3314 new.center_freq1 = cf0;
23665aaf 3315 /* If needed, adjust based on the newer interop workaround. */
7eb26df2 3316 if (ccf1) {
23665aaf
JM		 3317 unsigned int diff;
3318
7eb26df2 3319 diff = abs(ccf1 - ccf0);
33181ea7 3320 if ((diff == 8) && support_160) {
23665aaf 3321 new.width = NL80211_CHAN_WIDTH_160;
7eb26df2 3322 new.center_freq1 = cf1;
33181ea7 3323 } else if ((diff > 8) && support_80_80) {
23665aaf 3324 new.width = NL80211_CHAN_WIDTH_80P80;
7eb26df2 3325 new.center_freq2 = cf1;
23665aaf
JM		 3326 }
3327 }
abcff6ef
JD		 3328 break;
3329 case IEEE80211_VHT_CHANWIDTH_160MHZ:
7eb26df2 3330 /* deprecated encoding */
8ac3c704 3331 new.width = NL80211_CHAN_WIDTH_160;
7eb26df2 3332 new.center_freq1 = cf0;
abcff6ef
JD		 3333 break;
3334 case IEEE80211_VHT_CHANWIDTH_80P80MHZ:
7eb26df2 3335 /* deprecated encoding */
8ac3c704 3336 new.width = NL80211_CHAN_WIDTH_80P80;
7eb26df2
JB		 3337 new.center_freq1 = cf0;
3338 new.center_freq2 = cf1;
abcff6ef
JD		 3339 break;
3340 default:
8ac3c704 3341 return false;
abcff6ef
JD		 3342 }
3343
8ac3c704
JB		 3344 if (!cfg80211_chandef_valid(&new))
3345 return false;
3346
3347 *chandef = new;
3348 return true;
abcff6ef
JD		 3349}
3350
57fa5e85
JB		 3351bool ieee80211_chandef_he_6ghz_oper(struct ieee80211_sub_if_data *sdata,
3352 const struct ieee80211_he_operation *he_oper,
3353 struct cfg80211_chan_def *chandef)
3354{
3355 struct ieee80211_local *local = sdata->local;
3356 struct ieee80211_supported_band *sband;
3357 enum nl80211_iftype iftype = ieee80211_vif_type_p2p(&sdata->vif);
3358 const struct ieee80211_sta_he_cap *he_cap;
3359 struct cfg80211_chan_def he_chandef = *chandef;
3360 const struct ieee80211_he_6ghz_oper *he_6ghz_oper;
3361 bool support_80_80, support_160;
3362 u8 he_phy_cap;
3363 u32 freq;
3364
3365 if (chandef->chan->band != NL80211_BAND_6GHZ)
3366 return true;
3367
3368 sband = local->hw.wiphy->bands[NL80211_BAND_6GHZ];
3369
3370 he_cap = ieee80211_get_he_iftype_cap(sband, iftype);
3371 if (!he_cap) {
3372 sdata_info(sdata, "Missing iftype sband data/HE cap");
3373 return false;
3374 }
3375
3376 he_phy_cap = he_cap->he_cap_elem.phy_cap_info[0];
3377 support_160 =
3378 he_phy_cap &
3379 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G;
3380 support_80_80 =
3381 he_phy_cap &
3382 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G;
3383
3384 if (!he_oper) {
3385 sdata_info(sdata,
3386 "HE is not advertised on (on %d MHz), expect issues\n",
3387 chandef->chan->center_freq);
3388 return false;
3389 }
3390
3391 he_6ghz_oper = ieee80211_he_6ghz_oper(he_oper);
3392
3393 if (!he_6ghz_oper) {
3394 sdata_info(sdata,
3395 "HE 6GHz operation missing (on %d MHz), expect issues\n",
3396 chandef->chan->center_freq);
3397 return false;
3398 }
3399
3400 freq = ieee80211_channel_to_frequency(he_6ghz_oper->primary,
3401 NL80211_BAND_6GHZ);
3402 he_chandef.chan = ieee80211_get_channel(sdata->local->hw.wiphy, freq);
3403
3404 switch (u8_get_bits(he_6ghz_oper->control,
3405 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH)) {
3406 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_20MHZ:
3407 he_chandef.width = NL80211_CHAN_WIDTH_20;
3408 break;
3409 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_40MHZ:
3410 he_chandef.width = NL80211_CHAN_WIDTH_40;
3411 break;
3412 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_80MHZ:
3413 he_chandef.width = NL80211_CHAN_WIDTH_80;
3414 break;
3415 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_160MHZ:
3416 he_chandef.width = NL80211_CHAN_WIDTH_80;
3417 if (!he_6ghz_oper->ccfs1)
3418 break;
3419 if (abs(he_6ghz_oper->ccfs1 - he_6ghz_oper->ccfs0) == 8) {
3420 if (support_160)
3421 he_chandef.width = NL80211_CHAN_WIDTH_160;
3422 } else {
3423 if (support_80_80)
3424 he_chandef.width = NL80211_CHAN_WIDTH_80P80;
3425 }
3426 break;
3427 }
3428
3429 if (he_chandef.width == NL80211_CHAN_WIDTH_160) {
3430 he_chandef.center_freq1 =
3431 ieee80211_channel_to_frequency(he_6ghz_oper->ccfs1,
3432 NL80211_BAND_6GHZ);
3433 } else {
3434 he_chandef.center_freq1 =
3435 ieee80211_channel_to_frequency(he_6ghz_oper->ccfs0,
3436 NL80211_BAND_6GHZ);
75bcbd69
JC		 3437 if (support_80_80 || support_160)
3438 he_chandef.center_freq2 =
3439 ieee80211_channel_to_frequency(he_6ghz_oper->ccfs1,
3440 NL80211_BAND_6GHZ);
57fa5e85
JB		 3441 }
3442
3443 if (!cfg80211_chandef_valid(&he_chandef)) {
3444 sdata_info(sdata,
3445 "HE 6GHz operation resulted in invalid chandef: %d MHz/%d/%d MHz/%d MHz\n",
3446 he_chandef.chan ? he_chandef.chan->center_freq : 0,
3447 he_chandef.width,
3448 he_chandef.center_freq1,
3449 he_chandef.center_freq2);
3450 return false;
3451 }
3452
3453 *chandef = he_chandef;
3454
8fca2b87 3455 return true;
1d00ce80
TP		 3456}
3457
3458bool ieee80211_chandef_s1g_oper(const struct ieee80211_s1g_oper_ie *oper,
3459 struct cfg80211_chan_def *chandef)
3460{
3461 u32 oper_freq;
3462
3463 if (!oper)
3464 return false;
3465
3466 switch (FIELD_GET(S1G_OPER_CH_WIDTH_OPER, oper->ch_width)) {
3467 case IEEE80211_S1G_CHANWIDTH_1MHZ:
3468 chandef->width = NL80211_CHAN_WIDTH_1;
3469 break;
3470 case IEEE80211_S1G_CHANWIDTH_2MHZ:
3471 chandef->width = NL80211_CHAN_WIDTH_2;
3472 break;
3473 case IEEE80211_S1G_CHANWIDTH_4MHZ:
3474 chandef->width = NL80211_CHAN_WIDTH_4;
3475 break;
3476 case IEEE80211_S1G_CHANWIDTH_8MHZ:
3477 chandef->width = NL80211_CHAN_WIDTH_8;
3478 break;
3479 case IEEE80211_S1G_CHANWIDTH_16MHZ:
3480 chandef->width = NL80211_CHAN_WIDTH_16;
3481 break;
3482 default:
3483 return false;
3484 }
3485
3486 oper_freq = ieee80211_channel_to_freq_khz(oper->oper_ch,
3487 NL80211_BAND_S1GHZ);
3488 chandef->center_freq1 = KHZ_TO_MHZ(oper_freq);
3489 chandef->freq1_offset = oper_freq % 1000;
3490
57fa5e85
JB		 3491 return true;
3492}
3493
2103dec1
SW		 3494int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef,
3495 const struct ieee80211_supported_band *sband,
3496 const u8 *srates, int srates_len, u32 *rates)
3497{
3498 u32 rate_flags = ieee80211_chandef_rate_flags(chandef);
3499 int shift = ieee80211_chandef_get_shift(chandef);
3500 struct ieee80211_rate *br;
3501 int brate, rate, i, j, count = 0;
3502
3503 *rates = 0;
3504
3505 for (i = 0; i < srates_len; i++) {
3506 rate = srates[i] & 0x7f;
3507
3508 for (j = 0; j < sband->n_bitrates; j++) {
3509 br = &sband->bitrates[j];
3510 if ((rate_flags & br->flags) != rate_flags)
3511 continue;
3512
3513 brate = DIV_ROUND_UP(br->bitrate, (1 << shift) * 5);
3514 if (brate == rate) {
3515 *rates |= BIT(j);
3516 count++;
3517 break;
3518 }
3519 }
3520 }
3521 return count;
3522}
3523
fc8a7321 3524int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
6b77863b 3525 struct sk_buff *skb, bool need_basic,
57fbcce3 3526 enum nl80211_band band)
768db343 3527{
768db343
AN		 3528 struct ieee80211_local *local = sdata->local;
3529 struct ieee80211_supported_band *sband;
2103dec1 3530 int rate, shift;
768db343 3531 u8 i, rates, *pos;
fc8a7321 3532 u32 basic_rates = sdata->vif.bss_conf.basic_rates;
2103dec1 3533 u32 rate_flags;
768db343 3534
2103dec1
SW		 3535 shift = ieee80211_vif_get_shift(&sdata->vif);
3536 rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef);
6b77863b 3537 sband = local->hw.wiphy->bands[band];
2103dec1
SW		 3538 rates = 0;
3539 for (i = 0; i < sband->n_bitrates; i++) {
3540 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
3541 continue;
3542 rates++;
3543 }
768db343
AN		 3544 if (rates > 8)
3545 rates = 8;
3546
3547 if (skb_tailroom(skb) < rates + 2)
3548 return -ENOMEM;
3549
3550 pos = skb_put(skb, rates + 2);
3551 *pos++ = WLAN_EID_SUPP_RATES;
3552 *pos++ = rates;
3553 for (i = 0; i < rates; i++) {
657c3e0c 3554 u8 basic = 0;
2103dec1
SW		 3555 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
3556 continue;
3557
657c3e0c
AN		 3558 if (need_basic && basic_rates & BIT(i))
3559 basic = 0x80;
2103dec1
SW		 3560 rate = DIV_ROUND_UP(sband->bitrates[i].bitrate,
3561 5 * (1 << shift));
3562 *pos++ = basic | (u8) rate;
768db343
AN		 3563 }
3564
3565 return 0;
3566}
3567
fc8a7321 3568int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
6b77863b 3569 struct sk_buff *skb, bool need_basic,
57fbcce3 3570 enum nl80211_band band)
768db343 3571{
768db343
AN		 3572 struct ieee80211_local *local = sdata->local;
3573 struct ieee80211_supported_band *sband;
cc63ec76 3574 int rate, shift;
768db343 3575 u8 i, exrates, *pos;
fc8a7321 3576 u32 basic_rates = sdata->vif.bss_conf.basic_rates;
2103dec1
SW		 3577 u32 rate_flags;
3578
3579 rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef);
3580 shift = ieee80211_vif_get_shift(&sdata->vif);
768db343 3581
6b77863b 3582 sband = local->hw.wiphy->bands[band];
2103dec1
SW		 3583 exrates = 0;
3584 for (i = 0; i < sband->n_bitrates; i++) {
3585 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
3586 continue;
3587 exrates++;
3588 }
3589
768db343
AN		 3590 if (exrates > 8)
3591 exrates -= 8;
3592 else
3593 exrates = 0;
3594
3595 if (skb_tailroom(skb) < exrates + 2)
3596 return -ENOMEM;
3597
3598 if (exrates) {
3599 pos = skb_put(skb, exrates + 2);
3600 *pos++ = WLAN_EID_EXT_SUPP_RATES;
3601 *pos++ = exrates;
3602 for (i = 8; i < sband->n_bitrates; i++) {
657c3e0c 3603 u8 basic = 0;
2103dec1
SW		 3604 if ((rate_flags & sband->bitrates[i].flags)
3605 != rate_flags)
3606 continue;
657c3e0c
AN		 3607 if (need_basic && basic_rates & BIT(i))
3608 basic = 0x80;
2103dec1
SW		 3609 rate = DIV_ROUND_UP(sband->bitrates[i].bitrate,
3610 5 * (1 << shift));
3611 *pos++ = basic | (u8) rate;
768db343
AN		 3612 }
3613 }
3614 return 0;
3615}
1dae27f8
WYG		 3616
3617int ieee80211_ave_rssi(struct ieee80211_vif *vif)
3618{
3619 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
3620 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3621
be6bcabc
WYG		 3622 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION)) {
3623 /* non-managed type inferfaces */
3624 return 0;
3625 }
338c17ae 3626 return -ewma_beacon_signal_read(&ifmgd->ave_beacon_signal);
1dae27f8 3627}
0d8a0a17 3628EXPORT_SYMBOL_GPL(ieee80211_ave_rssi);
04ecd257
JB		 3629
3630u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs)
3631{
3632 if (!mcs)
3633 return 1;
3634
3635 /* TODO: consider rx_highest */
3636
3637 if (mcs->rx_mask[3])
3638 return 4;
3639 if (mcs->rx_mask[2])
3640 return 3;
3641 if (mcs->rx_mask[1])
3642 return 2;
3643 return 1;
3644}
f4bda337
TP		 3645
3646/**
3647 * ieee80211_calculate_rx_timestamp - calculate timestamp in frame
3648 * @local: mac80211 hw info struct
3649 * @status: RX status
3650 * @mpdu_len: total MPDU length (including FCS)
3651 * @mpdu_offset: offset into MPDU to calculate timestamp at
3652 *
3653 * This function calculates the RX timestamp at the given MPDU offset, taking
3654 * into account what the RX timestamp was. An offset of 0 will just normalize
3655 * the timestamp to TSF at beginning of MPDU reception.
3656 */
3657u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
3658 struct ieee80211_rx_status *status,
3659 unsigned int mpdu_len,
3660 unsigned int mpdu_offset)
3661{
3662 u64 ts = status->mactime;
3663 struct rate_info ri;
3664 u16 rate;
da388233 3665 u8 n_ltf;
f4bda337
TP		 3666
3667 if (WARN_ON(!ieee80211_have_rx_timestamp(status)))
3668 return 0;
3669
3670 memset(&ri, 0, sizeof(ri));
3671
35f4962c
JB		 3672 ri.bw = status->bw;
3673
f4bda337 3674 /* Fill cfg80211 rate info */
da6a4352 3675 switch (status->encoding) {
da388233
AS		 3676 case RX_ENC_HE:
3677 ri.flags |= RATE_INFO_FLAGS_HE_MCS;
3678 ri.mcs = status->rate_idx;
3679 ri.nss = status->nss;
3680 ri.he_ru_alloc = status->he_ru;
3681 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI)
3682 ri.flags |= RATE_INFO_FLAGS_SHORT_GI;
3683
3684 /*
3685 * See P802.11ax_D6.0, section 27.3.4 for
3686 * VHT PPDU format.
3687 */
3688 if (status->flag & RX_FLAG_MACTIME_PLCP_START) {
3689 mpdu_offset += 2;
3690 ts += 36;
3691
3692 /*
3693 * TODO:
3694 * For HE MU PPDU, add the HE-SIG-B.
3695 * For HE ER PPDU, add 8us for the HE-SIG-A.
3696 * For HE TB PPDU, add 4us for the HE-STF.
3697 * Add the HE-LTF durations - variable.
3698 */
3699 }
3700
3701 break;
da6a4352 3702 case RX_ENC_HT:
f4bda337
TP		 3703 ri.mcs = status->rate_idx;
3704 ri.flags |= RATE_INFO_FLAGS_MCS;
7fdd69c5 3705 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI)
f4bda337 3706 ri.flags |= RATE_INFO_FLAGS_SHORT_GI;
da388233
AS		 3707
3708 /*
3709 * See P802.11REVmd_D3.0, section 19.3.2 for
3710 * HT PPDU format.
3711 */
3712 if (status->flag & RX_FLAG_MACTIME_PLCP_START) {
3713 mpdu_offset += 2;
3714 if (status->enc_flags & RX_ENC_FLAG_HT_GF)
3715 ts += 24;
3716 else
3717 ts += 32;
3718
3719 /*
3720 * Add Data HT-LTFs per streams
3721 * TODO: add Extension HT-LTFs, 4us per LTF
3722 */
3723 n_ltf = ((ri.mcs >> 3) & 3) + 1;
3724 n_ltf = n_ltf == 3 ? 4 : n_ltf;
3725 ts += n_ltf * 4;
3726 }
3727
da6a4352
JB		 3728 break;
3729 case RX_ENC_VHT:
5614618e
JB		 3730 ri.flags |= RATE_INFO_FLAGS_VHT_MCS;
3731 ri.mcs = status->rate_idx;
8613c948 3732 ri.nss = status->nss;
7fdd69c5 3733 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI)
5614618e 3734 ri.flags |= RATE_INFO_FLAGS_SHORT_GI;
da388233
AS		 3735
3736 /*
3737 * See P802.11REVmd_D3.0, section 21.3.2 for
3738 * VHT PPDU format.
3739 */
3740 if (status->flag & RX_FLAG_MACTIME_PLCP_START) {
3741 mpdu_offset += 2;
3742 ts += 36;
3743
3744 /*
3745 * Add VHT-LTFs per streams
3746 */
3747 n_ltf = (ri.nss != 1) && (ri.nss % 2) ?
3748 ri.nss + 1 : ri.nss;
3749 ts += 4 * n_ltf;
3750 }
3751
da6a4352
JB		 3752 break;
3753 default:
3754 WARN_ON(1);
fc0561dc 3755 fallthrough;
da6a4352 3756 case RX_ENC_LEGACY: {
f4bda337 3757 struct ieee80211_supported_band *sband;
2103dec1
SW		 3758 int shift = 0;
3759 int bitrate;
3760
da6a4352
JB		 3761 switch (status->bw) {
3762 case RATE_INFO_BW_10:
2103dec1 3763 shift = 1;
da6a4352
JB		 3764 break;
3765 case RATE_INFO_BW_5:
2103dec1 3766 shift = 2;
da6a4352 3767 break;
b51f3bee 3768 }
f4bda337
TP		 3769
3770 sband = local->hw.wiphy->bands[status->band];
2103dec1
SW		 3771 bitrate = sband->bitrates[status->rate_idx].bitrate;
3772 ri.legacy = DIV_ROUND_UP(bitrate, (1 << shift));
f4a0f0c5
JB		 3773
3774 if (status->flag & RX_FLAG_MACTIME_PLCP_START) {
57fbcce3 3775 if (status->band == NL80211_BAND_5GHZ) {
f4a0f0c5
JB		 3776 ts += 20 << shift;
3777 mpdu_offset += 2;
7fdd69c5 3778 } else if (status->enc_flags & RX_ENC_FLAG_SHORTPRE) {
f4a0f0c5
JB		 3779 ts += 96;
3780 } else {
3781 ts += 192;
3782 }
3783 }
da6a4352
JB		 3784 break;
3785 }
f4bda337
TP		 3786 }
3787
3788 rate = cfg80211_calculate_bitrate(&ri);
d86aa4f8 3789 if (WARN_ONCE(!rate,
f980ebc0
SS		 3790 "Invalid bitrate: flags=0x%llx, idx=%d, vht_nss=%d\n",
3791 (unsigned long long)status->flag, status->rate_idx,
8613c948 3792 status->nss))
d86aa4f8 3793 return 0;
f4bda337
TP		 3794
3795 /* rewind from end of MPDU */
3796 if (status->flag & RX_FLAG_MACTIME_END)
3797 ts -= mpdu_len * 8 * 10 / rate;
3798
3799 ts += mpdu_offset * 8 * 10 / rate;
3800
3801 return ts;
3802}
164eb02d
SW		 3803
3804void ieee80211_dfs_cac_cancel(struct ieee80211_local *local)
3805{
3806 struct ieee80211_sub_if_data *sdata;
d2859df5 3807 struct cfg80211_chan_def chandef;
164eb02d 3808
4a199068 3809 /* for interface list, to avoid linking iflist_mtx and chanctx_mtx */
a05829a7 3810 lockdep_assert_wiphy(local->hw.wiphy);
4a199068 3811
34a3740d 3812 mutex_lock(&local->mtx);
164eb02d 3813 list_for_each_entry(sdata, &local->interfaces, list) {
34a3740d
JB		 3814 /* it might be waiting for the local->mtx, but then
3815 * by the time it gets it, sdata->wdev.cac_started
3816 * will no longer be true
3817 */
3818 cancel_delayed_work(&sdata->dfs_cac_timer_work);
164eb02d
SW		 3819
3820 if (sdata->wdev.cac_started) {
d2859df5 3821 chandef = sdata->vif.bss_conf.chandef;
164eb02d
SW		 3822 ieee80211_vif_release_channel(sdata);
3823 cfg80211_cac_event(sdata->dev,
d2859df5 3824 &chandef,
164eb02d
SW		 3825 NL80211_RADAR_CAC_ABORTED,
3826 GFP_KERNEL);
3827 }
3828 }
34a3740d 3829 mutex_unlock(&local->mtx);
164eb02d
SW		 3830}
3831
3832void ieee80211_dfs_radar_detected_work(struct work_struct *work)
3833{
3834 struct ieee80211_local *local =
3835 container_of(work, struct ieee80211_local, radar_detected_work);
84a3d1c9 3836 struct cfg80211_chan_def chandef = local->hw.conf.chandef;
486cf4c0
MK		 3837 struct ieee80211_chanctx *ctx;
3838 int num_chanctx = 0;
3839
3840 mutex_lock(&local->chanctx_mtx);
3841 list_for_each_entry(ctx, &local->chanctx_list, list) {
3842 if (ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER)
3843 continue;
3844
3845 num_chanctx++;
3846 chandef = ctx->conf.def;
3847 }
3848 mutex_unlock(&local->chanctx_mtx);
164eb02d 3849
a05829a7 3850 wiphy_lock(local->hw.wiphy);
164eb02d 3851 ieee80211_dfs_cac_cancel(local);
a05829a7 3852 wiphy_unlock(local->hw.wiphy);
164eb02d 3853
486cf4c0
MK		 3854 if (num_chanctx > 1)
3855 /* XXX: multi-channel is not supported yet */
164eb02d 3856 WARN_ON(1);
84a3d1c9 3857 else
164eb02d 3858 cfg80211_radar_event(local->hw.wiphy, &chandef, GFP_KERNEL);
164eb02d
SW		 3859}
3860
3861void ieee80211_radar_detected(struct ieee80211_hw *hw)
3862{
3863 struct ieee80211_local *local = hw_to_local(hw);
3864
3865 trace_api_radar_detected(local);
3866
4a199068 3867 schedule_work(&local->radar_detected_work);
164eb02d
SW		 3868}
3869EXPORT_SYMBOL(ieee80211_radar_detected);
e6b7cde4
SW		 3870
3871u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c)
3872{
3873 u32 ret;
3874 int tmp;
3875
3876 switch (c->width) {
3877 case NL80211_CHAN_WIDTH_20:
3878 c->width = NL80211_CHAN_WIDTH_20_NOHT;
3879 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
3880 break;
3881 case NL80211_CHAN_WIDTH_40:
3882 c->width = NL80211_CHAN_WIDTH_20;
3883 c->center_freq1 = c->chan->center_freq;
3884 ret = IEEE80211_STA_DISABLE_40MHZ |
3885 IEEE80211_STA_DISABLE_VHT;
3886 break;
3887 case NL80211_CHAN_WIDTH_80:
3888 tmp = (30 + c->chan->center_freq - c->center_freq1)/20;
3889 /* n_P40 */
3890 tmp /= 2;
3891 /* freq_P40 */
3892 c->center_freq1 = c->center_freq1 - 20 + 40 * tmp;
3893 c->width = NL80211_CHAN_WIDTH_40;
3894 ret = IEEE80211_STA_DISABLE_VHT;
3895 break;
3896 case NL80211_CHAN_WIDTH_80P80:
3897 c->center_freq2 = 0;
3898 c->width = NL80211_CHAN_WIDTH_80;
3899 ret = IEEE80211_STA_DISABLE_80P80MHZ |
3900 IEEE80211_STA_DISABLE_160MHZ;
3901 break;
3902 case NL80211_CHAN_WIDTH_160:
3903 /* n_P20 */
3904 tmp = (70 + c->chan->center_freq - c->center_freq1)/20;
3905 /* n_P80 */
3906 tmp /= 4;
3907 c->center_freq1 = c->center_freq1 - 40 + 80 * tmp;
3908 c->width = NL80211_CHAN_WIDTH_80;
3909 ret = IEEE80211_STA_DISABLE_80P80MHZ |
3910 IEEE80211_STA_DISABLE_160MHZ;
3911 break;
3912 default:
3913 case NL80211_CHAN_WIDTH_20_NOHT:
3914 WARN_ON_ONCE(1);
3915 c->width = NL80211_CHAN_WIDTH_20_NOHT;
3916 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
3917 break;
df78a0c0
TP		 3918 case NL80211_CHAN_WIDTH_1:
3919 case NL80211_CHAN_WIDTH_2:
3920 case NL80211_CHAN_WIDTH_4:
3921 case NL80211_CHAN_WIDTH_8:
3922 case NL80211_CHAN_WIDTH_16:
e6b7cde4
SW		 3923 case NL80211_CHAN_WIDTH_5:
3924 case NL80211_CHAN_WIDTH_10:
3925 WARN_ON_ONCE(1);
3926 /* keep c->width */
3927 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
3928 break;
3929 }
3930
3931 WARN_ON_ONCE(!cfg80211_chandef_valid(c));
3932
3933 return ret;
3934}
687da132
EG		 3935
3936/*
3937 * Returns true if smps_mode_new is strictly more restrictive than
3938 * smps_mode_old.
3939 */
3940bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old,
3941 enum ieee80211_smps_mode smps_mode_new)
3942{
3943 if (WARN_ON_ONCE(smps_mode_old == IEEE80211_SMPS_AUTOMATIC ||
3944 smps_mode_new == IEEE80211_SMPS_AUTOMATIC))
3945 return false;
3946
3947 switch (smps_mode_old) {
3948 case IEEE80211_SMPS_STATIC:
3949 return false;
3950 case IEEE80211_SMPS_DYNAMIC:
3951 return smps_mode_new == IEEE80211_SMPS_STATIC;
3952 case IEEE80211_SMPS_OFF:
3953 return smps_mode_new != IEEE80211_SMPS_OFF;
3954 default:
3955 WARN_ON(1);
3956 }
3957
3958 return false;
3959}
c6da674a
CYY		 3960
3961int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata,
3962 struct cfg80211_csa_settings *csa_settings)
3963{
3964 struct sk_buff *skb;
3965 struct ieee80211_mgmt *mgmt;
3966 struct ieee80211_local *local = sdata->local;
3967 int freq;
4c121fd6
JB		 3968 int hdr_len = offsetofend(struct ieee80211_mgmt,
3969 u.action.u.chan_switch);
c6da674a
CYY		 3970 u8 *pos;
3971
3972 if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
3973 sdata->vif.type != NL80211_IFTYPE_MESH_POINT)
3974 return -EOPNOTSUPP;
3975
3976 skb = dev_alloc_skb(local->tx_headroom + hdr_len +
3977 5 + /* channel switch announcement element */
3978 3 + /* secondary channel offset element */
75d627d5 3979 5 + /* wide bandwidth channel switch announcement */
c6da674a
CYY		 3980 8); /* mesh channel switch parameters element */
3981 if (!skb)
3982 return -ENOMEM;
3983
3984 skb_reserve(skb, local->tx_headroom);
b080db58 3985 mgmt = skb_put_zero(skb, hdr_len);
c6da674a
CYY		 3986 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
3987 IEEE80211_STYPE_ACTION);
3988
3989 eth_broadcast_addr(mgmt->da);
3990 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
3991 if (ieee80211_vif_is_mesh(&sdata->vif)) {
3992 memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN);
3993 } else {
3994 struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
3995 memcpy(mgmt->bssid, ifibss->bssid, ETH_ALEN);
3996 }
3997 mgmt->u.action.category = WLAN_CATEGORY_SPECTRUM_MGMT;
3998 mgmt->u.action.u.chan_switch.action_code = WLAN_ACTION_SPCT_CHL_SWITCH;
3999 pos = skb_put(skb, 5);
4000 *pos++ = WLAN_EID_CHANNEL_SWITCH; /* EID */
4001 *pos++ = 3; /* IE length */
4002 *pos++ = csa_settings->block_tx ? 1 : 0; /* CSA mode */
4003 freq = csa_settings->chandef.chan->center_freq;
4004 *pos++ = ieee80211_frequency_to_channel(freq); /* channel */
4005 *pos++ = csa_settings->count; /* count */
4006
4007 if (csa_settings->chandef.width == NL80211_CHAN_WIDTH_40) {
4008 enum nl80211_channel_type ch_type;
4009
4010 skb_put(skb, 3);
4011 *pos++ = WLAN_EID_SECONDARY_CHANNEL_OFFSET; /* EID */
4012 *pos++ = 1; /* IE length */
4013 ch_type = cfg80211_get_chandef_type(&csa_settings->chandef);
4014 if (ch_type == NL80211_CHAN_HT40PLUS)
4015 *pos++ = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
4016 else
4017 *pos++ = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
4018 }
4019
4020 if (ieee80211_vif_is_mesh(&sdata->vif)) {
4021 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
c6da674a
CYY		 4022
4023 skb_put(skb, 8);
4024 *pos++ = WLAN_EID_CHAN_SWITCH_PARAM; /* EID */
4025 *pos++ = 6; /* IE length */
4026 *pos++ = sdata->u.mesh.mshcfg.dot11MeshTTL; /* Mesh TTL */
4027 *pos = 0x00; /* Mesh Flag: Tx Restrict, Initiator, Reason */
4028 *pos |= WLAN_EID_CHAN_SWITCH_PARAM_INITIATOR;
4029 *pos++ |= csa_settings->block_tx ?
4030 WLAN_EID_CHAN_SWITCH_PARAM_TX_RESTRICT : 0x00;
4031 put_unaligned_le16(WLAN_REASON_MESH_CHAN, pos); /* Reason Cd */
4032 pos += 2;
ca91dc97 4033 put_unaligned_le16(ifmsh->pre_value, pos);/* Precedence Value */
c6da674a 4034 pos += 2;
c6da674a
CYY		 4035 }
4036
75d627d5
SW		 4037 if (csa_settings->chandef.width == NL80211_CHAN_WIDTH_80 ||
4038 csa_settings->chandef.width == NL80211_CHAN_WIDTH_80P80 ||
4039 csa_settings->chandef.width == NL80211_CHAN_WIDTH_160) {
4040 skb_put(skb, 5);
4041 ieee80211_ie_build_wide_bw_cs(pos, &csa_settings->chandef);
4042 }
4043
c6da674a
CYY		 4044 ieee80211_tx_skb(sdata, skb);
4045 return 0;
4046}
2475b1cc
MS		 4047
4048bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs)
4049{
4050 return !(cs == NULL || cs->cipher == 0 ||
4051 cs->hdr_len < cs->pn_len + cs->pn_off ||
4052 cs->hdr_len <= cs->key_idx_off ||
4053 cs->key_idx_shift > 7 ||
4054 cs->key_idx_mask == 0);
4055}
4056
4057bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n)
4058{
4059 int i;
4060
4061 /* Ensure we have enough iftype bitmap space for all iftype values */
4062 WARN_ON((NUM_NL80211_IFTYPES / 8 + 1) > sizeof(cs[0].iftype));
4063
4064 for (i = 0; i < n; i++)
4065 if (!ieee80211_cs_valid(&cs[i]))
4066 return false;
4067
4068 return true;
4069}
4070
4071const struct ieee80211_cipher_scheme *
4072ieee80211_cs_get(struct ieee80211_local *local, u32 cipher,
4073 enum nl80211_iftype iftype)
4074{
4075 const struct ieee80211_cipher_scheme *l = local->hw.cipher_schemes;
4076 int n = local->hw.n_cipher_schemes;
4077 int i;
4078 const struct ieee80211_cipher_scheme *cs = NULL;
4079
4080 for (i = 0; i < n; i++) {
4081 if (l[i].cipher == cipher) {
4082 cs = &l[i];
4083 break;
4084 }
4085 }
4086
4087 if (!cs || !(cs->iftype & BIT(iftype)))
4088 return NULL;
4089
4090 return cs;
4091}
4092
4093int ieee80211_cs_headroom(struct ieee80211_local *local,
4094 struct cfg80211_crypto_settings *crypto,
4095 enum nl80211_iftype iftype)
4096{
4097 const struct ieee80211_cipher_scheme *cs;
4098 int headroom = IEEE80211_ENCRYPT_HEADROOM;
4099 int i;
4100
4101 for (i = 0; i < crypto->n_ciphers_pairwise; i++) {
4102 cs = ieee80211_cs_get(local, crypto->ciphers_pairwise[i],
4103 iftype);
4104
4105 if (cs && headroom < cs->hdr_len)
4106 headroom = cs->hdr_len;
4107 }
4108
4109 cs = ieee80211_cs_get(local, crypto->cipher_group, iftype);
4110 if (cs && headroom < cs->hdr_len)
4111 headroom = cs->hdr_len;
4112
4113 return headroom;
4114}
a7022e65
FF		 4115
4116static bool
4117ieee80211_extend_noa_desc(struct ieee80211_noa_data *data, u32 tsf, int i)
4118{
4119 s32 end = data->desc[i].start + data->desc[i].duration - (tsf + 1);
4120 int skip;
4121
4122 if (end > 0)
4123 return false;
4124
519ee691
JD		 4125 /* One shot NOA */
4126 if (data->count[i] == 1)
4127 return false;
4128
4129 if (data->desc[i].interval == 0)
4130 return false;
4131
a7022e65
FF		 4132 /* End time is in the past, check for repetitions */
4133 skip = DIV_ROUND_UP(-end, data->desc[i].interval);
4134 if (data->count[i] < 255) {
4135 if (data->count[i] <= skip) {
4136 data->count[i] = 0;
4137 return false;
4138 }
4139
4140 data->count[i] -= skip;
4141 }
4142
4143 data->desc[i].start += skip * data->desc[i].interval;
4144
4145 return true;
4146}
4147
4148static bool
4149ieee80211_extend_absent_time(struct ieee80211_noa_data *data, u32 tsf,
4150 s32 *offset)
4151{
4152 bool ret = false;
4153 int i;
4154
4155 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) {
4156 s32 cur;
4157
4158 if (!data->count[i])
4159 continue;
4160
4161 if (ieee80211_extend_noa_desc(data, tsf + *offset, i))
4162 ret = true;
4163
4164 cur = data->desc[i].start - tsf;
4165 if (cur > *offset)
4166 continue;
4167
4168 cur = data->desc[i].start + data->desc[i].duration - tsf;
4169 if (cur > *offset)
4170 *offset = cur;
4171 }
4172
4173 return ret;
4174}
4175
4176static u32
4177ieee80211_get_noa_absent_time(struct ieee80211_noa_data *data, u32 tsf)
4178{
4179 s32 offset = 0;
4180 int tries = 0;
4181 /*
4182 * arbitrary limit, used to avoid infinite loops when combined NoA
4183 * descriptors cover the full time period.
4184 */
4185 int max_tries = 5;
4186
4187 ieee80211_extend_absent_time(data, tsf, &offset);
4188 do {
4189 if (!ieee80211_extend_absent_time(data, tsf, &offset))
4190 break;
4191
4192 tries++;
4193 } while (tries < max_tries);
4194
4195 return offset;
4196}
4197
4198void ieee80211_update_p2p_noa(struct ieee80211_noa_data *data, u32 tsf)
4199{
4200 u32 next_offset = BIT(31) - 1;
4201 int i;
4202
4203 data->absent = 0;
4204 data->has_next_tsf = false;
4205 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) {
4206 s32 start;
4207
4208 if (!data->count[i])
4209 continue;
4210
4211 ieee80211_extend_noa_desc(data, tsf, i);
4212 start = data->desc[i].start - tsf;
4213 if (start <= 0)
4214 data->absent |= BIT(i);
4215
4216 if (next_offset > start)
4217 next_offset = start;
4218
4219 data->has_next_tsf = true;
4220 }
4221
4222 if (data->absent)
4223 next_offset = ieee80211_get_noa_absent_time(data, tsf);
4224
4225 data->next_tsf = tsf + next_offset;
4226}
4227EXPORT_SYMBOL(ieee80211_update_p2p_noa);
4228
4229int ieee80211_parse_p2p_noa(const struct ieee80211_p2p_noa_attr *attr,
4230 struct ieee80211_noa_data *data, u32 tsf)
4231{
4232 int ret = 0;
4233 int i;
4234
4235 memset(data, 0, sizeof(*data));
4236
4237 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) {
4238 const struct ieee80211_p2p_noa_desc *desc = &attr->desc[i];
4239
4240 if (!desc->count || !desc->duration)
4241 continue;
4242
4243 data->count[i] = desc->count;
4244 data->desc[i].start = le32_to_cpu(desc->start_time);
4245 data->desc[i].duration = le32_to_cpu(desc->duration);
4246 data->desc[i].interval = le32_to_cpu(desc->interval);
4247
4248 if (data->count[i] > 1 &&
4249 data->desc[i].interval < data->desc[i].duration)
4250 continue;
4251
4252 ieee80211_extend_noa_desc(data, tsf, i);
4253 ret++;
4254 }
4255
4256 if (ret)
4257 ieee80211_update_p2p_noa(data, tsf);
4258
4259 return ret;
4260}
4261EXPORT_SYMBOL(ieee80211_parse_p2p_noa);
057d5f4b
TP		 4262
4263void ieee80211_recalc_dtim(struct ieee80211_local *local,
4264 struct ieee80211_sub_if_data *sdata)
4265{
4266 u64 tsf = drv_get_tsf(local, sdata);
4267 u64 dtim_count = 0;
4268 u16 beacon_int = sdata->vif.bss_conf.beacon_int * 1024;
4269 u8 dtim_period = sdata->vif.bss_conf.dtim_period;
4270 struct ps_data *ps;
4271 u8 bcns_from_dtim;
4272
4273 if (tsf == -1ULL || !beacon_int || !dtim_period)
4274 return;
4275
4276 if (sdata->vif.type == NL80211_IFTYPE_AP ||
4277 sdata->vif.type == NL80211_IFTYPE_AP_VLAN) {
4278 if (!sdata->bss)
4279 return;
4280
4281 ps = &sdata->bss->ps;
4282 } else if (ieee80211_vif_is_mesh(&sdata->vif)) {
4283 ps = &sdata->u.mesh.ps;
4284 } else {
4285 return;
4286 }
4287
4288 /*
4289 * actually finds last dtim_count, mac80211 will update in
4290 * __beacon_add_tim().
4291 * dtim_count = dtim_period - (tsf / bcn_int) % dtim_period
4292 */
4293 do_div(tsf, beacon_int);
4294 bcns_from_dtim = do_div(tsf, dtim_period);
4295 /* just had a DTIM */
4296 if (!bcns_from_dtim)
4297 dtim_count = 0;
4298 else
4299 dtim_count = dtim_period - bcns_from_dtim;
4300
4301 ps->dtim_count = dtim_count;
4302}
73de86a3 4303
71e6195e
MK		 4304static u8 ieee80211_chanctx_radar_detect(struct ieee80211_local *local,
4305 struct ieee80211_chanctx *ctx)
4306{
4307 struct ieee80211_sub_if_data *sdata;
4308 u8 radar_detect = 0;
4309
4310 lockdep_assert_held(&local->chanctx_mtx);
4311
4312 if (WARN_ON(ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED))
4313 return 0;
4314
4315 list_for_each_entry(sdata, &ctx->reserved_vifs, reserved_chanctx_list)
4316 if (sdata->reserved_radar_required)
4317 radar_detect |= BIT(sdata->reserved_chandef.width);
4318
4319 /*
4320 * An in-place reservation context should not have any assigned vifs
4321 * until it replaces the other context.
4322 */
4323 WARN_ON(ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER &&
4324 !list_empty(&ctx->assigned_vifs));
4325
4326 list_for_each_entry(sdata, &ctx->assigned_vifs, assigned_chanctx_list)
4327 if (sdata->radar_required)
4328 radar_detect |= BIT(sdata->vif.bss_conf.chandef.width);
4329
4330 return radar_detect;
4331}
4332
73de86a3
LC		 4333int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata,
4334 const struct cfg80211_chan_def *chandef,
4335 enum ieee80211_chanctx_mode chanmode,
4336 u8 radar_detect)
4337{
4338 struct ieee80211_local *local = sdata->local;
4339 struct ieee80211_sub_if_data *sdata_iter;
4340 enum nl80211_iftype iftype = sdata->wdev.iftype;
73de86a3 4341 struct ieee80211_chanctx *ctx;
73de86a3 4342 int total = 1;
e227300c
PK		 4343 struct iface_combination_params params = {
4344 .radar_detect = radar_detect,
4345 };
73de86a3
LC		 4346
4347 lockdep_assert_held(&local->chanctx_mtx);
4348
4349 if (WARN_ON(hweight32(radar_detect) > 1))
4350 return -EINVAL;
4351
b6a55015
LC		 4352 if (WARN_ON(chandef && chanmode == IEEE80211_CHANCTX_SHARED &&
4353 !chandef->chan))
73de86a3
LC		 4354 return -EINVAL;
4355
4356 if (WARN_ON(iftype >= NUM_NL80211_IFTYPES))
4357 return -EINVAL;
4358
ac668afe
JB		 4359 if (sdata->vif.type == NL80211_IFTYPE_AP ||
4360 sdata->vif.type == NL80211_IFTYPE_MESH_POINT) {
4361 /*
4362 * always passing this is harmless, since it'll be the
4363 * same value that cfg80211 finds if it finds the same
4364 * interface ... and that's always allowed
4365 */
4366 params.new_beacon_int = sdata->vif.bss_conf.beacon_int;
4367 }
4368
73de86a3 4369 /* Always allow software iftypes */
e6f40511 4370 if (cfg80211_iftype_allowed(local->hw.wiphy, iftype, 0, 1)) {
73de86a3
LC		 4371 if (radar_detect)
4372 return -EINVAL;
4373 return 0;
4374 }
4375
e227300c
PK		 4376 if (chandef)
4377 params.num_different_channels = 1;
73de86a3
LC		 4378
4379 if (iftype != NL80211_IFTYPE_UNSPECIFIED)
e227300c 4380 params.iftype_num[iftype] = 1;
73de86a3
LC		 4381
4382 list_for_each_entry(ctx, &local->chanctx_list, list) {
5bcae31d
MK		 4383 if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED)
4384 continue;
e227300c
PK		 4385 params.radar_detect |=
4386 ieee80211_chanctx_radar_detect(local, ctx);
73de86a3 4387 if (ctx->mode == IEEE80211_CHANCTX_EXCLUSIVE) {
e227300c 4388 params.num_different_channels++;
73de86a3
LC		 4389 continue;
4390 }
b6a55015 4391 if (chandef && chanmode == IEEE80211_CHANCTX_SHARED &&
73de86a3
LC		 4392 cfg80211_chandef_compatible(chandef,
4393 &ctx->conf.def))
4394 continue;
e227300c 4395 params.num_different_channels++;
73de86a3
LC		 4396 }
4397
4398 list_for_each_entry_rcu(sdata_iter, &local->interfaces, list) {
4399 struct wireless_dev *wdev_iter;
4400
4401 wdev_iter = &sdata_iter->wdev;
4402
4403 if (sdata_iter == sdata ||
0f611d28 4404 !ieee80211_sdata_running(sdata_iter) ||
e6f40511
MP		 4405 cfg80211_iftype_allowed(local->hw.wiphy,
4406 wdev_iter->iftype, 0, 1))
73de86a3
LC		 4407 continue;
4408
e227300c 4409 params.iftype_num[wdev_iter->iftype]++;
73de86a3
LC		 4410 total++;
4411 }
4412
e227300c 4413 if (total == 1 && !params.radar_detect)
73de86a3
LC		 4414 return 0;
4415
e227300c 4416 return cfg80211_check_combinations(local->hw.wiphy, &params);
73de86a3 4417}
6fa001bc
MK		 4418
4419static void
4420ieee80211_iter_max_chans(const struct ieee80211_iface_combination *c,
4421 void *data)
4422{
4423 u32 *max_num_different_channels = data;
4424
4425 *max_num_different_channels = max(*max_num_different_channels,
4426 c->num_different_channels);
4427}
4428
4429int ieee80211_max_num_channels(struct ieee80211_local *local)
4430{
4431 struct ieee80211_sub_if_data *sdata;
6fa001bc 4432 struct ieee80211_chanctx *ctx;
6fa001bc
MK		 4433 u32 max_num_different_channels = 1;
4434 int err;
e227300c 4435 struct iface_combination_params params = {0};
6fa001bc
MK		 4436
4437 lockdep_assert_held(&local->chanctx_mtx);
4438
4439 list_for_each_entry(ctx, &local->chanctx_list, list) {
5bcae31d
MK		 4440 if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED)
4441 continue;
4442
e227300c 4443 params.num_different_channels++;
6fa001bc 4444
e227300c
PK		 4445 params.radar_detect |=
4446 ieee80211_chanctx_radar_detect(local, ctx);
6fa001bc
MK		 4447 }
4448
4449 list_for_each_entry_rcu(sdata, &local->interfaces, list)
e227300c 4450 params.iftype_num[sdata->wdev.iftype]++;
6fa001bc 4451
e227300c
PK		 4452 err = cfg80211_iter_combinations(local->hw.wiphy, &params,
4453 ieee80211_iter_max_chans,
6fa001bc
MK		 4454 &max_num_different_channels);
4455 if (err < 0)
4456 return err;
4457
4458 return max_num_different_channels;
7957c6c8
TP		 4459}
4460
4461void ieee80211_add_s1g_capab_ie(struct ieee80211_sub_if_data *sdata,
4462 struct ieee80211_sta_s1g_cap *caps,
4463 struct sk_buff *skb)
4464{
4465 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4466 struct ieee80211_s1g_cap s1g_capab;
4467 u8 *pos;
4468 int i;
4469
4470 if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
4471 return;
4472
4473 if (!caps->s1g)
4474 return;
4475
4476 memcpy(s1g_capab.capab_info, caps->cap, sizeof(caps->cap));
4477 memcpy(s1g_capab.supp_mcs_nss, caps->nss_mcs, sizeof(caps->nss_mcs));
4478
4479 /* override the capability info */
4480 for (i = 0; i < sizeof(ifmgd->s1g_capa.capab_info); i++) {
4481 u8 mask = ifmgd->s1g_capa_mask.capab_info[i];
4482
4483 s1g_capab.capab_info[i] &= ~mask;
4484 s1g_capab.capab_info[i] |= ifmgd->s1g_capa.capab_info[i] & mask;
4485 }
4486
4487 /* then MCS and NSS set */
4488 for (i = 0; i < sizeof(ifmgd->s1g_capa.supp_mcs_nss); i++) {
4489 u8 mask = ifmgd->s1g_capa_mask.supp_mcs_nss[i];
4490
4491 s1g_capab.supp_mcs_nss[i] &= ~mask;
4492 s1g_capab.supp_mcs_nss[i] |=
4493 ifmgd->s1g_capa.supp_mcs_nss[i] & mask;
4494 }
4495
4496 pos = skb_put(skb, 2 + sizeof(s1g_capab));
4497 *pos++ = WLAN_EID_S1G_CAPABILITIES;
4498 *pos++ = sizeof(s1g_capab);
4499
4500 memcpy(pos, &s1g_capab, sizeof(s1g_capab));
6fa001bc 4501}
40b861a0 4502
1d00ce80
TP		 4503void ieee80211_add_aid_request_ie(struct ieee80211_sub_if_data *sdata,
4504 struct sk_buff *skb)
4505{
4506 u8 *pos = skb_put(skb, 3);
4507
4508 *pos++ = WLAN_EID_AID_REQUEST;
4509 *pos++ = 1;
4510 *pos++ = 0;
4511}
4512
40b861a0
AN		 4513u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo)
4514{
4515 *buf++ = WLAN_EID_VENDOR_SPECIFIC;
4516 *buf++ = 7; /* len */
4517 *buf++ = 0x00; /* Microsoft OUI 00:50:F2 */
4518 *buf++ = 0x50;
4519 *buf++ = 0xf2;
4520 *buf++ = 2; /* WME */
4521 *buf++ = 0; /* WME info */
4522 *buf++ = 1; /* WME ver */
4523 *buf++ = qosinfo; /* U-APSD no in use */
4524
4525 return buf;
4526}
ba8c3d6f 4527
f2ac7e30
MK		 4528void ieee80211_txq_get_depth(struct ieee80211_txq *txq,
4529 unsigned long *frame_cnt,
4530 unsigned long *byte_cnt)
4531{
4532 struct txq_info *txqi = to_txq_info(txq);
bb42f2d1
THJ		 4533 u32 frag_cnt = 0, frag_bytes = 0;
4534 struct sk_buff *skb;
4535
4536 skb_queue_walk(&txqi->frags, skb) {
4537 frag_cnt++;
4538 frag_bytes += skb->len;
4539 }
f2ac7e30
MK		 4540
4541 if (frame_cnt)
bb42f2d1 4542 *frame_cnt = txqi->tin.backlog_packets + frag_cnt;
f2ac7e30
MK		 4543
4544 if (byte_cnt)
bb42f2d1 4545 *byte_cnt = txqi->tin.backlog_bytes + frag_bytes;
f2ac7e30
MK		 4546}
4547EXPORT_SYMBOL(ieee80211_txq_get_depth);
f438ceb8
EG		 4548
4549const u8 ieee80211_ac_to_qos_mask[IEEE80211_NUM_ACS] = {
4550 IEEE80211_WMM_IE_STA_QOSINFO_AC_VO,
4551 IEEE80211_WMM_IE_STA_QOSINFO_AC_VI,
4552 IEEE80211_WMM_IE_STA_QOSINFO_AC_BE,
4553 IEEE80211_WMM_IE_STA_QOSINFO_AC_BK
4554};
05d10957
TP		 4555
4556u16 ieee80211_encode_usf(int listen_interval)
4557{
4558 static const int listen_int_usf[] = { 1, 10, 1000, 10000 };
4559 u16 ui, usf = 0;
4560
4561 /* find greatest USF */
4562 while (usf < IEEE80211_MAX_USF) {
4563 if (listen_interval % listen_int_usf[usf + 1])
4564 break;
4565 usf += 1;
4566 }
4567 ui = listen_interval / listen_int_usf[usf];
4568
4569 /* error if there is a remainder. Should've been checked by user */
4570 WARN_ON_ONCE(ui > IEEE80211_MAX_UI);
4571 listen_interval = FIELD_PREP(LISTEN_INT_USF, usf) |
4572 FIELD_PREP(LISTEN_INT_UI, ui);
4573
4574 return (u16) listen_interval;
4575}
Linux 6.x block layer and io_uring tree(s)