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Linux 6.10-rc3
[linux-block.git] / net / mac80211 / util.c
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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
b82730bf 9 * Copyright (C) 2018-2024 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>
ffbd0c8c 27#include <kunit/visibility.h>
c2d1560a
JB		 28
29#include "ieee80211_i.h"
24487981 30#include "driver-ops.h"
2c8dccc7 31#include "rate.h"
ee385855 32#include "mesh.h"
c2d1560a 33#include "wme.h"
f2753ddb 34#include "led.h"
fffd0934 35#include "wep.h"
c2d1560a
JB		 36
37/* privid for wiphys to determine whether they belong to us or not */
8a47cea7 38const void *const mac80211_wiphy_privid = &mac80211_wiphy_privid;
c2d1560a 39
9a95371a
LR		 40struct ieee80211_hw *wiphy_to_ieee80211_hw(struct wiphy *wiphy)
41{
42 struct ieee80211_local *local;
9a95371a
LR		 43
44 local = wiphy_priv(wiphy);
45 return &local->hw;
46}
47EXPORT_SYMBOL(wiphy_to_ieee80211_hw);
c2d1560a 48
310c8387
JB		 49const struct ieee80211_conn_settings ieee80211_conn_settings_unlimited = {
50 .mode = IEEE80211_CONN_MODE_EHT,
51 .bw_limit = IEEE80211_CONN_BW_LIMIT_320,
52};
53
09a740ce
TP		 54u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
55 enum nl80211_iftype type)
56{
57 __le16 fc = hdr->frame_control;
58
59 if (ieee80211_is_data(fc)) {
60 if (len < 24) /* drop incorrect hdr len (data) */
61 return NULL;
62
63 if (ieee80211_has_a4(fc))
64 return NULL;
65 if (ieee80211_has_tods(fc))
66 return hdr->addr1;
67 if (ieee80211_has_fromds(fc))
68 return hdr->addr2;
69
70 return hdr->addr3;
71 }
72
73 if (ieee80211_is_s1g_beacon(fc)) {
74 struct ieee80211_ext *ext = (void *) hdr;
75
76 return ext->u.s1g_beacon.sa;
77 }
78
79 if (ieee80211_is_mgmt(fc)) {
80 if (len < 24) /* drop incorrect hdr len (mgmt) */
81 return NULL;
82 return hdr->addr3;
83 }
84
85 if (ieee80211_is_ctl(fc)) {
86 if (ieee80211_is_pspoll(fc))
87 return hdr->addr1;
88
89 if (ieee80211_is_back_req(fc)) {
90 switch (type) {
91 case NL80211_IFTYPE_STATION:
92 return hdr->addr2;
93 case NL80211_IFTYPE_AP:
94 case NL80211_IFTYPE_AP_VLAN:
95 return hdr->addr1;
96 default:
97 break; /* fall through to the return */
98 }
99 }
100 }
101
102 return NULL;
103}
104EXPORT_SYMBOL(ieee80211_get_bssid);
105
5cf121c3 106void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx)
c2d1560a 107{
252b86c4 108 struct sk_buff *skb;
2de8e0d9
JB		 109 struct ieee80211_hdr *hdr;
110
252b86c4 111 skb_queue_walk(&tx->skbs, skb) {
2de8e0d9
JB		 112 hdr = (struct ieee80211_hdr *) skb->data;
113 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
252b86c4 114 }
c2d1560a
JB		 115}
116
57fbcce3 117int ieee80211_frame_duration(enum nl80211_band band, size_t len,
2400dfe2 118 int rate, int erp, int short_preamble)
c2d1560a
JB		 119{
120 int dur;
121
122 /* calculate duration (in microseconds, rounded up to next higher
123 * integer if it includes a fractional microsecond) to send frame of
124 * len bytes (does not include FCS) at the given rate. Duration will
125 * also include SIFS.
126 *
127 * rate is in 100 kbps, so divident is multiplied by 10 in the
128 * DIV_ROUND_UP() operations.
129 */
130
57fbcce3 131 if (band == NL80211_BAND_5GHZ || erp) {
c2d1560a
JB		 132 /*
133 * OFDM:
134 *
135 * N_DBPS = DATARATE x 4
136 * N_SYM = Ceiling((16+8xLENGTH+6) / N_DBPS)
137 * (16 = SIGNAL time, 6 = tail bits)
138 * TXTIME = T_PREAMBLE + T_SIGNAL + T_SYM x N_SYM + Signal Ext
139 *
140 * T_SYM = 4 usec
438b61b7 141 * 802.11a - 18.5.2: aSIFSTime = 16 usec
c2d1560a
JB		 142 * 802.11g - 19.8.4: aSIFSTime = 10 usec +
143 * signal ext = 6 usec
144 */
c2d1560a 145 dur = 16; /* SIFS + signal ext */
438b61b7
SW		 146 dur += 16; /* IEEE 802.11-2012 18.3.2.4: T_PREAMBLE = 16 usec */
147 dur += 4; /* IEEE 802.11-2012 18.3.2.4: T_SIGNAL = 4 usec */
438b61b7 148
2103dec1
SW		 149 /* rates should already consider the channel bandwidth,
150 * don't apply divisor again.
151 */
152 dur += 4 * DIV_ROUND_UP((16 + 8 * (len + 4) + 6) * 10,
153 4 * rate); /* T_SYM x N_SYM */
c2d1560a
JB		 154 } else {
155 /*
156 * 802.11b or 802.11g with 802.11b compatibility:
157 * 18.3.4: TXTIME = PreambleLength + PLCPHeaderTime +
158 * Ceiling(((LENGTH+PBCC)x8)/DATARATE). PBCC=0.
159 *
160 * 802.11 (DS): 15.3.3, 802.11b: 18.3.4
161 * aSIFSTime = 10 usec
162 * aPreambleLength = 144 usec or 72 usec with short preamble
163 * aPLCPHeaderLength = 48 usec or 24 usec with short preamble
164 */
165 dur = 10; /* aSIFSTime = 10 usec */
166 dur += short_preamble ? (72 + 24) : (144 + 48);
167
168 dur += DIV_ROUND_UP(8 * (len + 4) * 10, rate);
169 }
170
171 return dur;
172}
173
174/* Exported duration function for driver use */
32bfd35d
JB		 175__le16 ieee80211_generic_frame_duration(struct ieee80211_hw *hw,
176 struct ieee80211_vif *vif,
57fbcce3 177 enum nl80211_band band,
8318d78a
JB		 178 size_t frame_len,
179 struct ieee80211_rate *rate)
c2d1560a 180{
25d834e1 181 struct ieee80211_sub_if_data *sdata;
c2d1560a 182 u16 dur;
2400dfe2 183 int erp;
25d834e1 184 bool short_preamble = false;
c2d1560a 185
8318d78a 186 erp = 0;
25d834e1
JB		 187 if (vif) {
188 sdata = vif_to_sdata(vif);
bda3933a 189 short_preamble = sdata->vif.bss_conf.use_short_preamble;
39eac2de 190 if (sdata->deflink.operating_11g_mode)
25d834e1
JB		 191 erp = rate->flags & IEEE80211_RATE_ERP_G;
192 }
8318d78a 193
4ee73f33 194 dur = ieee80211_frame_duration(band, frame_len, rate->bitrate, erp,
2400dfe2 195 short_preamble);
c2d1560a
JB		 196
197 return cpu_to_le16(dur);
198}
199EXPORT_SYMBOL(ieee80211_generic_frame_duration);
200
32bfd35d
JB		 201__le16 ieee80211_rts_duration(struct ieee80211_hw *hw,
202 struct ieee80211_vif *vif, size_t frame_len,
e039fa4a 203 const struct ieee80211_tx_info *frame_txctl)
c2d1560a
JB		 204{
205 struct ieee80211_local *local = hw_to_local(hw);
206 struct ieee80211_rate *rate;
25d834e1 207 struct ieee80211_sub_if_data *sdata;
471b3efd 208 bool short_preamble;
2400dfe2 209 int erp, bitrate;
c2d1560a 210 u16 dur;
2e92e6f2
JB		 211 struct ieee80211_supported_band *sband;
212
4ee73f33 213 sband = local->hw.wiphy->bands[frame_txctl->band];
c2d1560a 214
25d834e1 215 short_preamble = false;
7e9ed188 216
e039fa4a 217 rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx];
8318d78a
JB		 218
219 erp = 0;
25d834e1
JB		 220 if (vif) {
221 sdata = vif_to_sdata(vif);
bda3933a 222 short_preamble = sdata->vif.bss_conf.use_short_preamble;
39eac2de 223 if (sdata->deflink.operating_11g_mode)
25d834e1
JB		 224 erp = rate->flags & IEEE80211_RATE_ERP_G;
225 }
c2d1560a 226
2400dfe2 227 bitrate = rate->bitrate;
2103dec1 228
c2d1560a 229 /* CTS duration */
2103dec1 230 dur = ieee80211_frame_duration(sband->band, 10, bitrate,
2400dfe2 231 erp, short_preamble);
c2d1560a 232 /* Data frame duration */
2103dec1 233 dur += ieee80211_frame_duration(sband->band, frame_len, bitrate,
2400dfe2 234 erp, short_preamble);
c2d1560a 235 /* ACK duration */
2103dec1 236 dur += ieee80211_frame_duration(sband->band, 10, bitrate,
2400dfe2 237 erp, short_preamble);
c2d1560a
JB		 238
239 return cpu_to_le16(dur);
240}
241EXPORT_SYMBOL(ieee80211_rts_duration);
242
32bfd35d
JB		 243__le16 ieee80211_ctstoself_duration(struct ieee80211_hw *hw,
244 struct ieee80211_vif *vif,
c2d1560a 245 size_t frame_len,
e039fa4a 246 const struct ieee80211_tx_info *frame_txctl)
c2d1560a
JB		 247{
248 struct ieee80211_local *local = hw_to_local(hw);
249 struct ieee80211_rate *rate;
25d834e1 250 struct ieee80211_sub_if_data *sdata;
471b3efd 251 bool short_preamble;
2400dfe2 252 int erp, bitrate;
c2d1560a 253 u16 dur;
2e92e6f2
JB		 254 struct ieee80211_supported_band *sband;
255
4ee73f33 256 sband = local->hw.wiphy->bands[frame_txctl->band];
c2d1560a 257
25d834e1 258 short_preamble = false;
7e9ed188 259
e039fa4a 260 rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx];
8318d78a 261 erp = 0;
25d834e1
JB		 262 if (vif) {
263 sdata = vif_to_sdata(vif);
bda3933a 264 short_preamble = sdata->vif.bss_conf.use_short_preamble;
39eac2de 265 if (sdata->deflink.operating_11g_mode)
25d834e1
JB		 266 erp = rate->flags & IEEE80211_RATE_ERP_G;
267 }
c2d1560a 268
2400dfe2 269 bitrate = rate->bitrate;
2103dec1 270
c2d1560a 271 /* Data frame duration */
2103dec1 272 dur = ieee80211_frame_duration(sband->band, frame_len, bitrate,
2400dfe2 273 erp, short_preamble);
e039fa4a 274 if (!(frame_txctl->flags & IEEE80211_TX_CTL_NO_ACK)) {
c2d1560a 275 /* ACK duration */
2103dec1 276 dur += ieee80211_frame_duration(sband->band, 10, bitrate,
2400dfe2 277 erp, short_preamble);
c2d1560a
JB		 278 }
279
280 return cpu_to_le16(dur);
281}
282EXPORT_SYMBOL(ieee80211_ctstoself_duration);
283
c850e31f
AW		 284static void wake_tx_push_queue(struct ieee80211_local *local,
285 struct ieee80211_sub_if_data *sdata,
286 struct ieee80211_txq *queue)
287{
c850e31f
AW		 288 struct ieee80211_tx_control control = {
289 .sta = queue->sta,
290 };
291 struct sk_buff *skb;
c850e31f
AW		 292
293 while (1) {
c850e31f
AW		 294 skb = ieee80211_tx_dequeue(&local->hw, queue);
295 if (!skb)
296 break;
297
298 drv_tx(local, &control, skb);
299 }
300}
301
302/* wake_tx_queue handler for driver not implementing a custom one*/
303void ieee80211_handle_wake_tx_queue(struct ieee80211_hw *hw,
304 struct ieee80211_txq *txq)
305{
306 struct ieee80211_local *local = hw_to_local(hw);
307 struct ieee80211_sub_if_data *sdata = vif_to_sdata(txq->vif);
308 struct ieee80211_txq *queue;
309
007ae9b2
AW		 310 spin_lock(&local->handle_wake_tx_queue_lock);
311
c850e31f
AW		 312 /* Use ieee80211_next_txq() for airtime fairness accounting */
313 ieee80211_txq_schedule_start(hw, txq->ac);
314 while ((queue = ieee80211_next_txq(hw, txq->ac))) {
315 wake_tx_push_queue(local, sdata, queue);
316 ieee80211_return_txq(hw, queue, false);
317 }
318 ieee80211_txq_schedule_end(hw, txq->ac);
007ae9b2 319 spin_unlock(&local->handle_wake_tx_queue_lock);
c850e31f
AW		 320}
321EXPORT_SYMBOL(ieee80211_handle_wake_tx_queue);
322
21a5d4c3
MP		 323static void __ieee80211_wake_txqs(struct ieee80211_sub_if_data *sdata, int ac)
324{
325 struct ieee80211_local *local = sdata->local;
326 struct ieee80211_vif *vif = &sdata->vif;
327 struct fq *fq = &local->fq;
328 struct ps_data *ps = NULL;
329 struct txq_info *txqi;
330 struct sta_info *sta;
331 int i;
332
d8dec42b
JB		 333 local_bh_disable();
334 spin_lock(&fq->lock);
21a5d4c3 335
f856373e
FF		 336 if (!test_bit(SDATA_STATE_RUNNING, &sdata->state))
337 goto out;
338
21a5d4c3
MP		 339 if (sdata->vif.type == NL80211_IFTYPE_AP)
340 ps = &sdata->bss->ps;
341
21a5d4c3
MP		 342 list_for_each_entry_rcu(sta, &local->sta_list, list) {
343 if (sdata != sta->sdata)
344 continue;
345
346 for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) {
347 struct ieee80211_txq *txq = sta->sta.txq[i];
348
a5ae3264
ES		 349 if (!txq)
350 continue;
351
21a5d4c3
MP		 352 txqi = to_txq_info(txq);
353
354 if (ac != txq->ac)
355 continue;
356
4444bc21 357 if (!test_and_clear_bit(IEEE80211_TXQ_DIRTY,
21a5d4c3
MP		 358 &txqi->flags))
359 continue;
360
d8dec42b 361 spin_unlock(&fq->lock);
21a5d4c3 362 drv_wake_tx_queue(local, txqi);
d8dec42b 363 spin_lock(&fq->lock);
21a5d4c3
MP		 364 }
365 }
366
367 if (!vif->txq)
368 goto out;
369
370 txqi = to_txq_info(vif->txq);
371
4444bc21 372 if (!test_and_clear_bit(IEEE80211_TXQ_DIRTY, &txqi->flags) ||
21a5d4c3
MP		 373 (ps && atomic_read(&ps->num_sta_ps)) || ac != vif->txq->ac)
374 goto out;
375
d8dec42b 376 spin_unlock(&fq->lock);
21a5d4c3
MP		 377
378 drv_wake_tx_queue(local, txqi);
d8dec42b 379 local_bh_enable();
21a5d4c3
MP		 380 return;
381out:
d8dec42b
JB		 382 spin_unlock(&fq->lock);
383 local_bh_enable();
21a5d4c3
MP		 384}
385
f6c7f03f
EG		 386static void
387__releases(&local->queue_stop_reason_lock)
388__acquires(&local->queue_stop_reason_lock)
389_ieee80211_wake_txqs(struct ieee80211_local *local, unsigned long *flags)
21a5d4c3 390{
21a5d4c3
MP		 391 struct ieee80211_sub_if_data *sdata;
392 int n_acs = IEEE80211_NUM_ACS;
21a5d4c3
MP		 393 int i;
394
395 rcu_read_lock();
21a5d4c3
MP		 396
397 if (local->hw.queues < IEEE80211_NUM_ACS)
398 n_acs = 1;
399
400 for (i = 0; i < local->hw.queues; i++) {
401 if (local->queue_stop_reasons[i])
402 continue;
403
f6c7f03f 404 spin_unlock_irqrestore(&local->queue_stop_reason_lock, *flags);
21a5d4c3
MP		 405 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
406 int ac;
407
408 for (ac = 0; ac < n_acs; ac++) {
409 int ac_queue = sdata->vif.hw_queue[ac];
410
411 if (ac_queue == i ||
412 sdata->vif.cab_queue == i)
413 __ieee80211_wake_txqs(sdata, ac);
414 }
415 }
f6c7f03f 416 spin_lock_irqsave(&local->queue_stop_reason_lock, *flags);
21a5d4c3
MP		 417 }
418
21a5d4c3
MP		 419 rcu_read_unlock();
420}
421
da1cad73 422void ieee80211_wake_txqs(struct tasklet_struct *t)
f6c7f03f 423{
da1cad73
AP		 424 struct ieee80211_local *local = from_tasklet(local, t,
425 wake_txqs_tasklet);
f6c7f03f
EG		 426 unsigned long flags;
427
428 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
429 _ieee80211_wake_txqs(local, &flags);
430 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
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
107395f9 463 if (!skb_queue_empty(&local->pending[queue]))
3b8d81e0 464 tasklet_schedule(&local->tx_pending_tasklet);
21a5d4c3 465
f6c7f03f
EG		 466 /*
467 * Calling _ieee80211_wake_txqs here can be a problem because it may
468 * release queue_stop_reason_lock which has been taken by
469 * __ieee80211_wake_queue's caller. It is certainly not very nice to
470 * release someone's lock, but it is fine because all the callers of
471 * __ieee80211_wake_queue call it right before releasing the lock.
472 */
107395f9
AW		 473 if (reason == IEEE80211_QUEUE_STOP_REASON_DRIVER)
474 tasklet_schedule(&local->wake_txqs_tasklet);
475 else
476 _ieee80211_wake_txqs(local, flags);
c2d1560a 477}
ce7c9111 478
96f5e66e 479void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
cca07b00
LC		 480 enum queue_stop_reason reason,
481 bool refcounted)
ce7c9111
KV		 482{
483 struct ieee80211_local *local = hw_to_local(hw);
484 unsigned long flags;
485
486 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
f6c7f03f 487 __ieee80211_wake_queue(hw, queue, reason, refcounted, &flags);
ce7c9111
KV		 488 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
489}
490
491void ieee80211_wake_queue(struct ieee80211_hw *hw, int queue)
492{
493 ieee80211_wake_queue_by_reason(hw, queue,
cca07b00
LC		 494 IEEE80211_QUEUE_STOP_REASON_DRIVER,
495 false);
ce7c9111 496}
c2d1560a
JB		 497EXPORT_SYMBOL(ieee80211_wake_queue);
498
ce7c9111 499static void __ieee80211_stop_queue(struct ieee80211_hw *hw, int queue,
cca07b00
LC		 500 enum queue_stop_reason reason,
501 bool refcounted)
c2d1560a
JB		 502{
503 struct ieee80211_local *local = hw_to_local(hw);
504
b5878a2d
JB		 505 trace_stop_queue(local, queue, reason);
506
e4e72fb4
JB		 507 if (WARN_ON(queue >= hw->queues))
508 return;
96f5e66e 509
cca07b00
LC		 510 if (!refcounted)
511 local->q_stop_reasons[queue][reason] = 1;
512 else
513 local->q_stop_reasons[queue][reason]++;
ada15125 514
4444bc21 515 set_bit(reason, &local->queue_stop_reasons[queue]);
c2d1560a 516}
ce7c9111 517
96f5e66e 518void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
cca07b00
LC		 519 enum queue_stop_reason reason,
520 bool refcounted)
ce7c9111
KV		 521{
522 struct ieee80211_local *local = hw_to_local(hw);
523 unsigned long flags;
524
525 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
cca07b00 526 __ieee80211_stop_queue(hw, queue, reason, refcounted);
ce7c9111
KV		 527 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
528}
529
530void ieee80211_stop_queue(struct ieee80211_hw *hw, int queue)
531{
532 ieee80211_stop_queue_by_reason(hw, queue,
cca07b00
LC		 533 IEEE80211_QUEUE_STOP_REASON_DRIVER,
534 false);
ce7c9111 535}
c2d1560a
JB		 536EXPORT_SYMBOL(ieee80211_stop_queue);
537
8f77f384
JB		 538void ieee80211_add_pending_skb(struct ieee80211_local *local,
539 struct sk_buff *skb)
540{
541 struct ieee80211_hw *hw = &local->hw;
542 unsigned long flags;
a7bc376c 543 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
3a25a8c8 544 int queue = info->hw_queue;
a7bc376c
JB		 545
546 if (WARN_ON(!info->control.vif)) {
d4fa14cd 547 ieee80211_free_txskb(&local->hw, skb);
a7bc376c
JB		 548 return;
549 }
8f77f384
JB		 550
551 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
cca07b00
LC		 552 __ieee80211_stop_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
553 false);
3b8d81e0 554 __skb_queue_tail(&local->pending[queue], skb);
cca07b00 555 __ieee80211_wake_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
f6c7f03f 556 false, &flags);
8f77f384
JB		 557 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
558}
559
e3685e03
JB		 560void ieee80211_add_pending_skbs(struct ieee80211_local *local,
561 struct sk_buff_head *skbs)
8f77f384
JB		 562{
563 struct ieee80211_hw *hw = &local->hw;
564 struct sk_buff *skb;
565 unsigned long flags;
b0b97a8a 566 int queue, i;
8f77f384
JB		 567
568 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
8f77f384 569 while ((skb = skb_dequeue(skbs))) {
a7bc376c
JB		 570 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
571
572 if (WARN_ON(!info->control.vif)) {
d4fa14cd 573 ieee80211_free_txskb(&local->hw, skb);
a7bc376c
JB		 574 continue;
575 }
576
3a25a8c8 577 queue = info->hw_queue;
4644ae89
JB		 578
579 __ieee80211_stop_queue(hw, queue,
cca07b00
LC		 580 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
581 false);
4644ae89 582
3b8d81e0 583 __skb_queue_tail(&local->pending[queue], skb);
8f77f384
JB		 584 }
585
3b8d81e0 586 for (i = 0; i < hw->queues; i++)
8f77f384 587 __ieee80211_wake_queue(hw, i,
cca07b00 588 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
f6c7f03f 589 false, &flags);
8f77f384 590 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
8f77f384
JB		 591}
592
ce7c9111 593void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
445ea4e8 594 unsigned long queues,
cca07b00
LC		 595 enum queue_stop_reason reason,
596 bool refcounted)
c2d1560a 597{
ce7c9111
KV		 598 struct ieee80211_local *local = hw_to_local(hw);
599 unsigned long flags;
c2d1560a
JB		 600 int i;
601
ce7c9111
KV		 602 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
603
445ea4e8 604 for_each_set_bit(i, &queues, hw->queues)
cca07b00 605 __ieee80211_stop_queue(hw, i, reason, refcounted);
ce7c9111
KV		 606
607 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
608}
609
610void ieee80211_stop_queues(struct ieee80211_hw *hw)
611{
445ea4e8 612 ieee80211_stop_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
cca07b00
LC		 613 IEEE80211_QUEUE_STOP_REASON_DRIVER,
614 false);
c2d1560a
JB		 615}
616EXPORT_SYMBOL(ieee80211_stop_queues);
617
92ab8535
TW		 618int ieee80211_queue_stopped(struct ieee80211_hw *hw, int queue)
619{
620 struct ieee80211_local *local = hw_to_local(hw);
3b8d81e0
JB		 621 unsigned long flags;
622 int ret;
96f5e66e 623
e4e72fb4
JB		 624 if (WARN_ON(queue >= hw->queues))
625 return true;
96f5e66e 626
3b8d81e0 627 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
2419ea14
TP		 628 ret = test_bit(IEEE80211_QUEUE_STOP_REASON_DRIVER,
629 &local->queue_stop_reasons[queue]);
3b8d81e0
JB		 630 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
631 return ret;
92ab8535
TW		 632}
633EXPORT_SYMBOL(ieee80211_queue_stopped);
634
ce7c9111 635void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
445ea4e8 636 unsigned long queues,
cca07b00
LC		 637 enum queue_stop_reason reason,
638 bool refcounted)
c2d1560a 639{
ce7c9111
KV		 640 struct ieee80211_local *local = hw_to_local(hw);
641 unsigned long flags;
c2d1560a
JB		 642 int i;
643
ce7c9111
KV		 644 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
645
445ea4e8 646 for_each_set_bit(i, &queues, hw->queues)
f6c7f03f 647 __ieee80211_wake_queue(hw, i, reason, refcounted, &flags);
ce7c9111
KV		 648
649 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
650}
651
652void ieee80211_wake_queues(struct ieee80211_hw *hw)
653{
445ea4e8 654 ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
cca07b00
LC		 655 IEEE80211_QUEUE_STOP_REASON_DRIVER,
656 false);
c2d1560a
JB		 657}
658EXPORT_SYMBOL(ieee80211_wake_queues);
dabeb344 659
26da23b6
LC		 660static unsigned int
661ieee80211_get_vif_queues(struct ieee80211_local *local,
662 struct ieee80211_sub_if_data *sdata)
39ecc01d 663{
26da23b6 664 unsigned int queues;
39ecc01d 665
30686bf7 666 if (sdata && ieee80211_hw_check(&local->hw, QUEUE_CONTROL)) {
39ecc01d
JB		 667 int ac;
668
669 queues = 0;
670
671 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
672 queues |= BIT(sdata->vif.hw_queue[ac]);
673 if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE)
674 queues |= BIT(sdata->vif.cab_queue);
675 } else {
676 /* all queues */
677 queues = BIT(local->hw.queues) - 1;
678 }
679
26da23b6
LC		 680 return queues;
681}
682
4f9610d5
LK		 683void __ieee80211_flush_queues(struct ieee80211_local *local,
684 struct ieee80211_sub_if_data *sdata,
3b24f4c6 685 unsigned int queues, bool drop)
26da23b6 686{
26da23b6
LC		 687 if (!local->ops->flush)
688 return;
689
4f9610d5
LK		 690 /*
691 * If no queue was set, or if the HW doesn't support
692 * IEEE80211_HW_QUEUE_CONTROL - flush all queues
693 */
30686bf7 694 if (!queues || !ieee80211_hw_check(&local->hw, QUEUE_CONTROL))
4f9610d5 695 queues = ieee80211_get_vif_queues(local, sdata);
26da23b6 696
59f48fe2 697 ieee80211_stop_queues_by_reason(&local->hw, queues,
cca07b00
LC		 698 IEEE80211_QUEUE_STOP_REASON_FLUSH,
699 false);
445ea4e8 700
3831f6d8
MK		 701 if (drop) {
702 struct sta_info *sta;
703
704 /* Purge the queues, so the frames on them won't be
705 * sent during __ieee80211_wake_queue()
706 */
707 list_for_each_entry(sta, &local->sta_list, list) {
708 if (sdata != sta->sdata)
709 continue;
710 ieee80211_purge_sta_txqs(sta);
711 }
712 }
713
3b24f4c6 714 drv_flush(local, sdata, queues, drop);
445ea4e8 715
59f48fe2 716 ieee80211_wake_queues_by_reason(&local->hw, queues,
cca07b00
LC		 717 IEEE80211_QUEUE_STOP_REASON_FLUSH,
718 false);
39ecc01d
JB		 719}
720
4f9610d5 721void ieee80211_flush_queues(struct ieee80211_local *local,
3b24f4c6 722 struct ieee80211_sub_if_data *sdata, bool drop)
4f9610d5 723{
3b24f4c6 724 __ieee80211_flush_queues(local, sdata, 0, drop);
4f9610d5
LK		 725}
726
26da23b6
LC		 727void ieee80211_stop_vif_queues(struct ieee80211_local *local,
728 struct ieee80211_sub_if_data *sdata,
729 enum queue_stop_reason reason)
730{
731 ieee80211_stop_queues_by_reason(&local->hw,
732 ieee80211_get_vif_queues(local, sdata),
733 reason, true);
734}
735
736void ieee80211_wake_vif_queues(struct ieee80211_local *local,
737 struct ieee80211_sub_if_data *sdata,
738 enum queue_stop_reason reason)
739{
740 ieee80211_wake_queues_by_reason(&local->hw,
741 ieee80211_get_vif_queues(local, sdata),
742 reason, true);
743}
744
3384d757
AN		 745static void __iterate_interfaces(struct ieee80211_local *local,
746 u32 iter_flags,
747 void (*iterator)(void *data, u8 *mac,
748 struct ieee80211_vif *vif),
749 void *data)
dabeb344 750{
dabeb344 751 struct ieee80211_sub_if_data *sdata;
3384d757 752 bool active_only = iter_flags & IEEE80211_IFACE_ITER_ACTIVE;
dabeb344 753
c7c71066 754 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
2f561feb 755 switch (sdata->vif.type) {
05c914fe 756 case NL80211_IFTYPE_MONITOR:
d8212184 757 if (!(sdata->u.mntr.flags & MONITOR_FLAG_ACTIVE))
31eba5bc
FF		 758 continue;
759 break;
05c914fe 760 case NL80211_IFTYPE_AP_VLAN:
2f561feb 761 continue;
2ca27bcf 762 default:
2f561feb
ID		 763 break;
764 }
8b2c9824 765 if (!(iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL) &&
3384d757 766 active_only && !(sdata->flags & IEEE80211_SDATA_IN_DRIVER))
8b2c9824 767 continue;
265a0708
BG		 768 if ((iter_flags & IEEE80211_IFACE_SKIP_SDATA_NOT_IN_DRIVER) &&
769 !(sdata->flags & IEEE80211_SDATA_IN_DRIVER))
770 continue;
3384d757 771 if (ieee80211_sdata_running(sdata) || !active_only)
47846c9b 772 iterator(data, sdata->vif.addr,
2f561feb
ID		 773 &sdata->vif);
774 }
775
c7c71066
JB		 776 sdata = rcu_dereference_check(local->monitor_sdata,
777 lockdep_is_held(&local->iflist_mtx) ||
6dd23603 778 lockdep_is_held(&local->hw.wiphy->mtx));
8b2c9824 779 if (sdata &&
3384d757 780 (iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL || !active_only ||
8b2c9824 781 sdata->flags & IEEE80211_SDATA_IN_DRIVER))
685fb72b 782 iterator(data, sdata->vif.addr, &sdata->vif);
c7c71066 783}
685fb72b 784
3384d757 785void ieee80211_iterate_interfaces(
c7c71066
JB		 786 struct ieee80211_hw *hw, u32 iter_flags,
787 void (*iterator)(void *data, u8 *mac,
788 struct ieee80211_vif *vif),
789 void *data)
790{
791 struct ieee80211_local *local = hw_to_local(hw);
792
793 mutex_lock(&local->iflist_mtx);
3384d757 794 __iterate_interfaces(local, iter_flags, iterator, data);
c771c9d8 795 mutex_unlock(&local->iflist_mtx);
2f561feb 796}
3384d757 797EXPORT_SYMBOL_GPL(ieee80211_iterate_interfaces);
2f561feb
ID		 798
799void ieee80211_iterate_active_interfaces_atomic(
8b2c9824 800 struct ieee80211_hw *hw, u32 iter_flags,
2f561feb
ID		 801 void (*iterator)(void *data, u8 *mac,
802 struct ieee80211_vif *vif),
803 void *data)
804{
805 struct ieee80211_local *local = hw_to_local(hw);
2f561feb 806
e38bad47 807 rcu_read_lock();
3384d757
AN		 808 __iterate_interfaces(local, iter_flags | IEEE80211_IFACE_ITER_ACTIVE,
809 iterator, data);
c7c71066
JB		 810 rcu_read_unlock();
811}
812EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_atomic);
dabeb344 813
a05829a7 814void ieee80211_iterate_active_interfaces_mtx(
c7c71066
JB		 815 struct ieee80211_hw *hw, u32 iter_flags,
816 void (*iterator)(void *data, u8 *mac,
817 struct ieee80211_vif *vif),
818 void *data)
819{
820 struct ieee80211_local *local = hw_to_local(hw);
e38bad47 821
a05829a7 822 lockdep_assert_wiphy(hw->wiphy);
685fb72b 823
3384d757
AN		 824 __iterate_interfaces(local, iter_flags | IEEE80211_IFACE_ITER_ACTIVE,
825 iterator, data);
dabeb344 826}
a05829a7 827EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_mtx);
37ffc8da 828
0fc1e049
AN		 829static void __iterate_stations(struct ieee80211_local *local,
830 void (*iterator)(void *data,
831 struct ieee80211_sta *sta),
832 void *data)
833{
834 struct sta_info *sta;
835
836 list_for_each_entry_rcu(sta, &local->sta_list, list) {
837 if (!sta->uploaded)
838 continue;
839
840 iterator(data, &sta->sta);
841 }
842}
843
844void ieee80211_iterate_stations_atomic(struct ieee80211_hw *hw,
845 void (*iterator)(void *data,
846 struct ieee80211_sta *sta),
847 void *data)
848{
849 struct ieee80211_local *local = hw_to_local(hw);
850
851 rcu_read_lock();
852 __iterate_stations(local, iterator, data);
853 rcu_read_unlock();
854}
855EXPORT_SYMBOL_GPL(ieee80211_iterate_stations_atomic);
856
ad7e718c
JB		 857struct ieee80211_vif *wdev_to_ieee80211_vif(struct wireless_dev *wdev)
858{
859 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
860
861 if (!ieee80211_sdata_running(sdata) ||
862 !(sdata->flags & IEEE80211_SDATA_IN_DRIVER))
863 return NULL;
864 return &sdata->vif;
865}
866EXPORT_SYMBOL_GPL(wdev_to_ieee80211_vif);
867
dc5a1ad7
EG		 868struct wireless_dev *ieee80211_vif_to_wdev(struct ieee80211_vif *vif)
869{
6513e98e
JB		 870 if (!vif)
871 return NULL;
872
f30386a8 873 return &vif_to_sdata(vif)->wdev;
dc5a1ad7
EG		 874}
875EXPORT_SYMBOL_GPL(ieee80211_vif_to_wdev);
876
42935eca
LR		 877/*
878 * Nothing should have been stuffed into the workqueue during
4afaff17
EG		 879 * the suspend->resume cycle. Since we can't check each caller
880 * of this function if we are already quiescing / suspended,
881 * check here and don't WARN since this can actually happen when
882 * the rx path (for example) is racing against __ieee80211_suspend
883 * and suspending / quiescing was set after the rx path checked
884 * them.
42935eca
LR		 885 */
886static bool ieee80211_can_queue_work(struct ieee80211_local *local)
887{
4afaff17
EG		 888 if (local->quiescing || (local->suspended && !local->resuming)) {
889 pr_warn("queueing ieee80211 work while going to suspend\n");
ceb99fe0 890 return false;
4afaff17 891 }
42935eca
LR		 892
893 return true;
894}
895
896void ieee80211_queue_work(struct ieee80211_hw *hw, struct work_struct *work)
897{
898 struct ieee80211_local *local = hw_to_local(hw);
899
900 if (!ieee80211_can_queue_work(local))
901 return;
902
903 queue_work(local->workqueue, work);
904}
905EXPORT_SYMBOL(ieee80211_queue_work);
906
907void ieee80211_queue_delayed_work(struct ieee80211_hw *hw,
908 struct delayed_work *dwork,
909 unsigned long delay)
910{
911 struct ieee80211_local *local = hw_to_local(hw);
912
913 if (!ieee80211_can_queue_work(local))
914 return;
915
916 queue_delayed_work(local->workqueue, dwork, delay);
917}
918EXPORT_SYMBOL(ieee80211_queue_delayed_work);
919
e552af05
HD		 920void ieee80211_regulatory_limit_wmm_params(struct ieee80211_sub_if_data *sdata,
921 struct ieee80211_tx_queue_params
922 *qparam, int ac)
923{
924 struct ieee80211_chanctx_conf *chanctx_conf;
925 const struct ieee80211_reg_rule *rrule;
38cb87ee 926 const struct ieee80211_wmm_ac *wmm_ac;
e552af05
HD		 927 u16 center_freq = 0;
928
929 if (sdata->vif.type != NL80211_IFTYPE_AP &&
930 sdata->vif.type != NL80211_IFTYPE_STATION)
931 return;
932
933 rcu_read_lock();
d0a9123e 934 chanctx_conf = rcu_dereference(sdata->vif.bss_conf.chanctx_conf);
e552af05
HD		 935 if (chanctx_conf)
936 center_freq = chanctx_conf->def.chan->center_freq;
937
938 if (!center_freq) {
939 rcu_read_unlock();
940 return;
941 }
942
943 rrule = freq_reg_info(sdata->wdev.wiphy, MHZ_TO_KHZ(center_freq));
944
38cb87ee 945 if (IS_ERR_OR_NULL(rrule) || !rrule->has_wmm) {
e552af05
HD		 946 rcu_read_unlock();
947 return;
948 }
949
950 if (sdata->vif.type == NL80211_IFTYPE_AP)
38cb87ee 951 wmm_ac = &rrule->wmm_rule.ap[ac];
e552af05 952 else
38cb87ee 953 wmm_ac = &rrule->wmm_rule.client[ac];
e552af05
HD		 954 qparam->cw_min = max_t(u16, qparam->cw_min, wmm_ac->cw_min);
955 qparam->cw_max = max_t(u16, qparam->cw_max, wmm_ac->cw_max);
956 qparam->aifs = max_t(u8, qparam->aifs, wmm_ac->aifsn);
abd76d25 957 qparam->txop = min_t(u16, qparam->txop, wmm_ac->cot / 32);
e552af05
HD		 958 rcu_read_unlock();
959}
960
b3e2130b 961void ieee80211_set_wmm_default(struct ieee80211_link_data *link,
cec66283 962 bool bss_notify, bool enable_qos)
5825fe10 963{
b3e2130b 964 struct ieee80211_sub_if_data *sdata = link->sdata;
5825fe10
JB		 965 struct ieee80211_local *local = sdata->local;
966 struct ieee80211_tx_queue_params qparam;
55de908a 967 struct ieee80211_chanctx_conf *chanctx_conf;
54bcbc69 968 int ac;
cec66283 969 bool use_11b;
239281f8 970 bool is_ocb; /* Use another EDCA parameters if dot11OCBActivated=true */
aa837e1d 971 int aCWmin, aCWmax;
5825fe10
JB		 972
973 if (!local->ops->conf_tx)
974 return;
975
54bcbc69
JB		 976 if (local->hw.queues < IEEE80211_NUM_ACS)
977 return;
978
5825fe10
JB		 979 memset(&qparam, 0, sizeof(qparam));
980
55de908a 981 rcu_read_lock();
b3e2130b 982 chanctx_conf = rcu_dereference(link->conf->chanctx_conf);
55de908a 983 use_11b = (chanctx_conf &&
57fbcce3 984 chanctx_conf->def.chan->band == NL80211_BAND_2GHZ) &&
39eac2de 985 !link->operating_11g_mode;
55de908a 986 rcu_read_unlock();
5825fe10 987
239281f8
RL		 988 is_ocb = (sdata->vif.type == NL80211_IFTYPE_OCB);
989
1f4ffde8
FZ		 990 /* Set defaults according to 802.11-2007 Table 7-37 */
991 aCWmax = 1023;
992 if (use_11b)
993 aCWmin = 31;
994 else
995 aCWmin = 15;
996
997 /* Confiure old 802.11b/g medium access rules. */
998 qparam.cw_max = aCWmax;
999 qparam.cw_min = aCWmin;
1000 qparam.txop = 0;
1001 qparam.aifs = 2;
aa837e1d 1002
1f4ffde8
FZ		 1003 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
1004 /* Update if QoS is enabled. */
a8ce8544
SG		 1005 if (enable_qos) {
1006 switch (ac) {
1007 case IEEE80211_AC_BK:
1008 qparam.cw_max = aCWmax;
1009 qparam.cw_min = aCWmin;
1010 qparam.txop = 0;
239281f8
RL		 1011 if (is_ocb)
1012 qparam.aifs = 9;
1013 else
1014 qparam.aifs = 7;
a8ce8544
SG		 1015 break;
1016 /* never happens but let's not leave undefined */
1017 default:
1018 case IEEE80211_AC_BE:
1019 qparam.cw_max = aCWmax;
1020 qparam.cw_min = aCWmin;
1021 qparam.txop = 0;
239281f8
RL		 1022 if (is_ocb)
1023 qparam.aifs = 6;
1024 else
1025 qparam.aifs = 3;
a8ce8544
SG		 1026 break;
1027 case IEEE80211_AC_VI:
1028 qparam.cw_max = aCWmin;
1029 qparam.cw_min = (aCWmin + 1) / 2 - 1;
239281f8
RL		 1030 if (is_ocb)
1031 qparam.txop = 0;
1032 else if (use_11b)
a8ce8544
SG		 1033 qparam.txop = 6016/32;
1034 else
1035 qparam.txop = 3008/32;
239281f8
RL		 1036
1037 if (is_ocb)
1038 qparam.aifs = 3;
1039 else
1040 qparam.aifs = 2;
a8ce8544
SG		 1041 break;
1042 case IEEE80211_AC_VO:
1043 qparam.cw_max = (aCWmin + 1) / 2 - 1;
1044 qparam.cw_min = (aCWmin + 1) / 4 - 1;
239281f8
RL		 1045 if (is_ocb)
1046 qparam.txop = 0;
1047 else if (use_11b)
a8ce8544
SG		 1048 qparam.txop = 3264/32;
1049 else
1050 qparam.txop = 1504/32;
1051 qparam.aifs = 2;
1052 break;
1053 }
aa837e1d 1054 }
e552af05 1055 ieee80211_regulatory_limit_wmm_params(sdata, &qparam, ac);
5825fe10 1056
ab13315a
KV		 1057 qparam.uapsd = false;
1058
b3e2130b
JB		 1059 link->tx_conf[ac] = qparam;
1060 drv_conf_tx(local, link, ac, &qparam);
aa837e1d 1061 }
e1b3ec1a 1062
f142c6b9 1063 if (sdata->vif.type != NL80211_IFTYPE_MONITOR &&
708d50ed
AB		 1064 sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE &&
1065 sdata->vif.type != NL80211_IFTYPE_NAN) {
b3e2130b 1066 link->conf->qos = enable_qos;
3abead59 1067 if (bss_notify)
b3e2130b 1068 ieee80211_link_info_change_notify(sdata, link,
7b7090b4 1069 BSS_CHANGED_QOS);
d9734979 1070 }
5825fe10 1071}
e50db65c 1072
46900298 1073void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
700e8ea6 1074 u16 transaction, u16 auth_alg, u16 status,
4a3cb702 1075 const u8 *extra, size_t extra_len, const u8 *da,
1672c0e3
JB		 1076 const u8 *bssid, const u8 *key, u8 key_len, u8 key_idx,
1077 u32 tx_flags)
46900298
JB		 1078{
1079 struct ieee80211_local *local = sdata->local;
1080 struct sk_buff *skb;
1081 struct ieee80211_mgmt *mgmt;
f1871abd 1082 bool multi_link = ieee80211_vif_is_mld(&sdata->vif);
8ec9a96b
JB		 1083 struct {
1084 u8 id;
1085 u8 len;
1086 u8 ext_id;
1087 struct ieee80211_multi_link_elem ml;
1088 struct ieee80211_mle_basic_common_info basic;
1089 } __packed mle = {
1090 .id = WLAN_EID_EXTENSION,
1091 .len = sizeof(mle) - 2,
1092 .ext_id = WLAN_EID_EXT_EHT_MULTI_LINK,
1093 .ml.control = cpu_to_le16(IEEE80211_ML_CONTROL_TYPE_BASIC),
1094 .basic.len = sizeof(mle.basic),
1095 };
fffd0934 1096 int err;
46900298 1097
8ec9a96b
JB		 1098 memcpy(mle.basic.mld_mac_addr, sdata->vif.addr, ETH_ALEN);
1099
15e230ab 1100 /* 24 + 6 = header + auth_algo + auth_transaction + status_code */
744462a9 1101 skb = dev_alloc_skb(local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN +
8ec9a96b
JB		 1102 24 + 6 + extra_len + IEEE80211_WEP_ICV_LEN +
1103 multi_link * sizeof(mle));
d15b8459 1104 if (!skb)
46900298 1105 return;
d15b8459 1106
744462a9 1107 skb_reserve(skb, local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN);
46900298 1108
b080db58 1109 mgmt = skb_put_zero(skb, 24 + 6);
46900298
JB		 1110 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
1111 IEEE80211_STYPE_AUTH);
efa6a09d 1112 memcpy(mgmt->da, da, ETH_ALEN);
47846c9b 1113 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
46900298
JB		 1114 memcpy(mgmt->bssid, bssid, ETH_ALEN);
1115 mgmt->u.auth.auth_alg = cpu_to_le16(auth_alg);
1116 mgmt->u.auth.auth_transaction = cpu_to_le16(transaction);
700e8ea6 1117 mgmt->u.auth.status_code = cpu_to_le16(status);
46900298 1118 if (extra)
59ae1d12 1119 skb_put_data(skb, extra, extra_len);
8ec9a96b
JB		 1120 if (multi_link)
1121 skb_put_data(skb, &mle, sizeof(mle));
46900298 1122
fffd0934
JB		 1123 if (auth_alg == WLAN_AUTH_SHARED_KEY && transaction == 3) {
1124 mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
1125 err = ieee80211_wep_encrypt(local, skb, key, key_len, key_idx);
7d7b0075
JB		 1126 if (WARN_ON(err)) {
1127 kfree_skb(skb);
1128 return;
1129 }
fffd0934
JB		 1130 }
1131
1672c0e3
JB		 1132 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT |
1133 tx_flags;
62ae67be 1134 ieee80211_tx_skb(sdata, skb);
46900298
JB		 1135}
1136
6ae16775 1137void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
4b08d1b6
JB		 1138 const u8 *da, const u8 *bssid,
1139 u16 stype, u16 reason,
6ae16775
AQ		 1140 bool send_frame, u8 *frame_buf)
1141{
1142 struct ieee80211_local *local = sdata->local;
1143 struct sk_buff *skb;
1144 struct ieee80211_mgmt *mgmt = (void *)frame_buf;
1145
1146 /* build frame */
1147 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | stype);
1148 mgmt->duration = 0; /* initialize only */
1149 mgmt->seq_ctrl = 0; /* initialize only */
4b08d1b6 1150 memcpy(mgmt->da, da, ETH_ALEN);
6ae16775
AQ		 1151 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
1152 memcpy(mgmt->bssid, bssid, ETH_ALEN);
1153 /* u.deauth.reason_code == u.disassoc.reason_code */
1154 mgmt->u.deauth.reason_code = cpu_to_le16(reason);
1155
1156 if (send_frame) {
1157 skb = dev_alloc_skb(local->hw.extra_tx_headroom +
1158 IEEE80211_DEAUTH_FRAME_LEN);
1159 if (!skb)
1160 return;
1161
1162 skb_reserve(skb, local->hw.extra_tx_headroom);
1163
1164 /* copy in frame */
59ae1d12 1165 skb_put_data(skb, mgmt, IEEE80211_DEAUTH_FRAME_LEN);
6ae16775
AQ		 1166
1167 if (sdata->vif.type != NL80211_IFTYPE_STATION ||
1168 !(sdata->u.mgd.flags & IEEE80211_STA_MFP_ENABLED))
1169 IEEE80211_SKB_CB(skb)->flags |=
1170 IEEE80211_TX_INTFL_DONT_ENCRYPT;
1171
1172 ieee80211_tx_skb(sdata, skb);
1173 }
1174}
1175
07095d16
JB		 1176static int ieee80211_put_s1g_cap(struct sk_buff *skb,
1177 struct ieee80211_sta_s1g_cap *s1g_cap)
2ad2274c 1178{
07095d16
JB		 1179 if (skb_tailroom(skb) < 2 + sizeof(struct ieee80211_s1g_cap))
1180 return -ENOBUFS;
2ad2274c 1181
07095d16
JB		 1182 skb_put_u8(skb, WLAN_EID_S1G_CAPABILITIES);
1183 skb_put_u8(skb, sizeof(struct ieee80211_s1g_cap));
1184
1185 skb_put_data(skb, &s1g_cap->cap, sizeof(s1g_cap->cap));
1186 skb_put_data(skb, &s1g_cap->nss_mcs, sizeof(s1g_cap->nss_mcs));
2ad2274c 1187
07095d16 1188 return 0;
2ad2274c
IP		 1189}
1190
07095d16
JB		 1191static int ieee80211_put_preq_ies_band(struct sk_buff *skb,
1192 struct ieee80211_sub_if_data *sdata,
1193 const u8 *ie, size_t ie_len,
1194 size_t *offset,
1195 enum nl80211_band band,
1196 u32 rate_mask,
1197 struct cfg80211_chan_def *chandef,
1198 u32 flags)
de95a54b 1199{
2ad2274c 1200 struct ieee80211_local *local = sdata->local;
de95a54b 1201 struct ieee80211_supported_band *sband;
07095d16 1202 int i, err;
c56ef672 1203 size_t noffset;
2103dec1 1204 u32 rate_flags;
40a11ca8 1205 bool have_80mhz = false;
de95a54b 1206
c56ef672
DS		 1207 *offset = 0;
1208
4d36ec58 1209 sband = local->hw.wiphy->bands[band];
d811b3d5
AN		 1210 if (WARN_ON_ONCE(!sband))
1211 return 0;
de95a54b 1212
2103dec1 1213 rate_flags = ieee80211_chandef_rate_flags(chandef);
2103dec1 1214
0333a81b 1215 /* For direct scan add S1G IE and consider its override bits */
07095d16
JB		 1216 if (band == NL80211_BAND_S1GHZ)
1217 return ieee80211_put_s1g_cap(skb, &sband->s1g_cap);
8e664fb3 1218
b7322933
JB		 1219 err = ieee80211_put_srates_elem(skb, sband, 0, rate_flags,
1220 ~rate_mask, WLAN_EID_SUPP_RATES);
07095d16
JB		 1221 if (err)
1222 return err;
8e664fb3
JB		 1223
1224 /* insert "request information" if in custom IEs */
1225 if (ie && ie_len) {
1226 static const u8 before_extrates[] = {
1227 WLAN_EID_SSID,
1228 WLAN_EID_SUPP_RATES,
1229 WLAN_EID_REQUEST,
1230 };
1231 noffset = ieee80211_ie_split(ie, ie_len,
1232 before_extrates,
1233 ARRAY_SIZE(before_extrates),
c56ef672 1234 *offset);
07095d16
JB		 1235 if (skb_tailroom(skb) < noffset - *offset)
1236 return -ENOBUFS;
1237 skb_put_data(skb, ie + *offset, noffset - *offset);
c56ef672 1238 *offset = noffset;
8e664fb3
JB		 1239 }
1240
b7322933
JB		 1241 err = ieee80211_put_srates_elem(skb, sband, 0, rate_flags,
1242 ~rate_mask, WLAN_EID_EXT_SUPP_RATES);
07095d16
JB		 1243 if (err)
1244 return err;
8e664fb3 1245
57fbcce3 1246 if (chandef->chan && sband->band == NL80211_BAND_2GHZ) {
07095d16
JB		 1247 if (skb_tailroom(skb) < 3)
1248 return -ENOBUFS;
1249 skb_put_u8(skb, WLAN_EID_DS_PARAMS);
1250 skb_put_u8(skb, 1);
1251 skb_put_u8(skb,
1252 ieee80211_frequency_to_channel(chandef->chan->center_freq));
651b5225
JM		 1253 }
1254
b9771d41 1255 if (flags & IEEE80211_PROBE_FLAG_MIN_CONTENT)
07095d16 1256 return 0;
b9771d41 1257
8e664fb3
JB		 1258 /* insert custom IEs that go before HT */
1259 if (ie && ie_len) {
1260 static const u8 before_ht[] = {
a7f26d80
JB		 1261 /*
1262 * no need to list the ones split off already
1263 * (or generated here)
1264 */
8e664fb3
JB		 1265 WLAN_EID_DS_PARAMS,
1266 WLAN_EID_SUPPORTED_REGULATORY_CLASSES,
1267 };
1268 noffset = ieee80211_ie_split(ie, ie_len,
1269 before_ht, ARRAY_SIZE(before_ht),
c56ef672 1270 *offset);
07095d16
JB		 1271 if (skb_tailroom(skb) < noffset - *offset)
1272 return -ENOBUFS;
1273 skb_put_data(skb, ie + *offset, noffset - *offset);
c56ef672 1274 *offset = noffset;
de95a54b
JB		 1275 }
1276
c604b9f2 1277 if (sband->ht_cap.ht_supported) {
07095d16
JB		 1278 u8 *pos;
1279
1280 if (skb_tailroom(skb) < 2 + sizeof(struct ieee80211_ht_cap))
1281 return -ENOBUFS;
1282
1283 pos = skb_put(skb, 2 + sizeof(struct ieee80211_ht_cap));
1284 ieee80211_ie_build_ht_cap(pos, &sband->ht_cap,
1285 sband->ht_cap.cap);
c604b9f2 1286 }
5ef2d41a 1287
4d952300 1288 /* insert custom IEs that go before VHT */
8e664fb3 1289 if (ie && ie_len) {
4d952300 1290 static const u8 before_vht[] = {
a7f26d80
JB		 1291 /*
1292 * no need to list the ones split off already
1293 * (or generated here)
1294 */
4d952300
JB		 1295 WLAN_EID_BSS_COEX_2040,
1296 WLAN_EID_EXT_CAPABILITY,
1297 WLAN_EID_SSID_LIST,
1298 WLAN_EID_CHANNEL_USAGE,
1299 WLAN_EID_INTERWORKING,
b44eebea 1300 WLAN_EID_MESH_ID,
a7f26d80 1301 /* 60 GHz (Multi-band, DMG, MMS) can't happen */
4d952300
JB		 1302 };
1303 noffset = ieee80211_ie_split(ie, ie_len,
1304 before_vht, ARRAY_SIZE(before_vht),
c56ef672 1305 *offset);
07095d16
JB		 1306 if (skb_tailroom(skb) < noffset - *offset)
1307 return -ENOBUFS;
1308 skb_put_data(skb, ie + *offset, noffset - *offset);
c56ef672 1309 *offset = noffset;
de95a54b
JB		 1310 }
1311
40a11ca8
JB		 1312 /* Check if any channel in this sband supports at least 80 MHz */
1313 for (i = 0; i < sband->n_channels; i++) {
fa44b988
AN		 1314 if (sband->channels[i].flags & (IEEE80211_CHAN_DISABLED |
1315 IEEE80211_CHAN_NO_80MHZ))
1316 continue;
1317
1318 have_80mhz = true;
1319 break;
40a11ca8
JB		 1320 }
1321
1322 if (sband->vht_cap.vht_supported && have_80mhz) {
07095d16
JB		 1323 u8 *pos;
1324
1325 if (skb_tailroom(skb) < 2 + sizeof(struct ieee80211_vht_cap))
1326 return -ENOBUFS;
1327
1328 pos = skb_put(skb, 2 + sizeof(struct ieee80211_vht_cap));
1329 ieee80211_ie_build_vht_cap(pos, &sband->vht_cap,
1330 sband->vht_cap.cap);
c604b9f2 1331 }
ba0afa2f 1332
41cbb0f5
LC		 1333 /* insert custom IEs that go before HE */
1334 if (ie && ie_len) {
1335 static const u8 before_he[] = {
1336 /*
1337 * no need to list the ones split off before VHT
1338 * or generated here
1339 */
1340 WLAN_EID_EXTENSION, WLAN_EID_EXT_FILS_REQ_PARAMS,
1341 WLAN_EID_AP_CSN,
1342 /* TODO: add 11ah/11aj/11ak elements */
1343 };
1344 noffset = ieee80211_ie_split(ie, ie_len,
1345 before_he, ARRAY_SIZE(before_he),
1346 *offset);
07095d16
JB		 1347 if (skb_tailroom(skb) < noffset - *offset)
1348 return -ENOBUFS;
1349 skb_put_data(skb, ie + *offset, noffset - *offset);
41cbb0f5
LC		 1350 *offset = noffset;
1351 }
1352
28aa895b 1353 if (cfg80211_any_usable_channels(local->hw.wiphy, BIT(sband->band),
0bc47057 1354 IEEE80211_CHAN_NO_HE)) {
28aa895b
JB		 1355 err = ieee80211_put_he_cap(skb, sdata, sband, NULL);
1356 if (err)
1357 return err;
7d29bc50
JB		 1358 }
1359
ea8af8be 1360 if (cfg80211_any_usable_channels(local->hw.wiphy, BIT(sband->band),
820acc81
IP		 1361 IEEE80211_CHAN_NO_HE |
1362 IEEE80211_CHAN_NO_EHT)) {
ea8af8be
JB		 1363 err = ieee80211_put_eht_cap(skb, sdata, sband, NULL);
1364 if (err)
1365 return err;
820acc81
IP		 1366 }
1367
07095d16
JB		 1368 err = ieee80211_put_he_6ghz_cap(skb, sdata, IEEE80211_SMPS_OFF);
1369 if (err)
1370 return err;
41cbb0f5
LC		 1371
1372 /*
1373 * If adding more here, adjust code in main.c
1374 * that calculates local->scan_ies_len.
1375 */
1376
07095d16 1377 return 0;
de95a54b
JB		 1378}
1379
07095d16
JB		 1380static int ieee80211_put_preq_ies(struct sk_buff *skb,
1381 struct ieee80211_sub_if_data *sdata,
1382 struct ieee80211_scan_ies *ie_desc,
1383 const u8 *ie, size_t ie_len,
1384 u8 bands_used, u32 *rate_masks,
1385 struct cfg80211_chan_def *chandef,
1386 u32 flags)
c56ef672 1387{
07095d16
JB		 1388 size_t custom_ie_offset = 0;
1389 int i, err;
c56ef672
DS		 1390
1391 memset(ie_desc, 0, sizeof(*ie_desc));
1392
57fbcce3 1393 for (i = 0; i < NUM_NL80211_BANDS; i++) {
c56ef672 1394 if (bands_used & BIT(i)) {
07095d16
JB		 1395 ie_desc->ies[i] = skb_tail_pointer(skb);
1396 err = ieee80211_put_preq_ies_band(skb, sdata,
1397 ie, ie_len,
1398 &custom_ie_offset,
1399 i, rate_masks[i],
1400 chandef, flags);
1401 if (err)
1402 return err;
1403 ie_desc->len[i] = skb_tail_pointer(skb) -
1404 ie_desc->ies[i];
c56ef672
DS		 1405 }
1406 }
1407
1408 /* add any remaining custom IEs */
1409 if (ie && ie_len) {
07095d16 1410 if (WARN_ONCE(skb_tailroom(skb) < ie_len - custom_ie_offset,
c56ef672 1411 "not enough space for preq custom IEs\n"))
07095d16
JB		 1412 return -ENOBUFS;
1413 ie_desc->common_ies = skb_tail_pointer(skb);
1414 skb_put_data(skb, ie + custom_ie_offset,
1415 ie_len - custom_ie_offset);
1416 ie_desc->common_ie_len = skb_tail_pointer(skb) -
1417 ie_desc->common_ies;
c56ef672
DS		 1418 }
1419
07095d16 1420 return 0;
c56ef672
DS		 1421};
1422
07095d16
JB		 1423int ieee80211_build_preq_ies(struct ieee80211_sub_if_data *sdata, u8 *buffer,
1424 size_t buffer_len,
1425 struct ieee80211_scan_ies *ie_desc,
1426 const u8 *ie, size_t ie_len,
1427 u8 bands_used, u32 *rate_masks,
1428 struct cfg80211_chan_def *chandef,
1429 u32 flags)
1430{
1431 struct sk_buff *skb = alloc_skb(buffer_len, GFP_KERNEL);
1432 uintptr_t offs;
1433 int ret, i;
1434 u8 *start;
1435
1436 if (!skb)
1437 return -ENOMEM;
1438
1439 start = skb_tail_pointer(skb);
1440 memset(start, 0, skb_tailroom(skb));
1441 ret = ieee80211_put_preq_ies(skb, sdata, ie_desc, ie, ie_len,
1442 bands_used, rate_masks, chandef,
1443 flags);
1444 if (ret < 0) {
1445 goto out;
1446 }
1447
1448 if (skb->len > buffer_len) {
1449 ret = -ENOBUFS;
1450 goto out;
1451 }
1452
1453 memcpy(buffer, start, skb->len);
1454
1455 /* adjust ie_desc for copy */
1456 for (i = 0; i < NUM_NL80211_BANDS; i++) {
1457 offs = ie_desc->ies[i] - start;
1458 ie_desc->ies[i] = buffer + offs;
1459 }
1460 offs = ie_desc->common_ies - start;
1461 ie_desc->common_ies = buffer + offs;
1462
1463 ret = skb->len;
1464out:
1465 consume_skb(skb);
1466 return ret;
1467}
1468
a619a4c0 1469struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
a344d677
JB		 1470 const u8 *src, const u8 *dst,
1471 u32 ratemask,
6b77863b 1472 struct ieee80211_channel *chan,
a619a4c0 1473 const u8 *ssid, size_t ssid_len,
a806c558 1474 const u8 *ie, size_t ie_len,
00387f32 1475 u32 flags)
46900298
JB		 1476{
1477 struct ieee80211_local *local = sdata->local;
2103dec1 1478 struct cfg80211_chan_def chandef;
46900298
JB		 1479 struct sk_buff *skb;
1480 struct ieee80211_mgmt *mgmt;
57fbcce3 1481 u32 rate_masks[NUM_NL80211_BANDS] = {};
c56ef672 1482 struct ieee80211_scan_ies dummy_ie_desc;
46900298 1483
a806c558
PS		 1484 /*
1485 * Do not send DS Channel parameter for directed probe requests
1486 * in order to maximize the chance that we get a response. Some
1487 * badly-behaved APs don't respond when this parameter is included.
1488 */
6092077a 1489 chandef.width = sdata->vif.bss_conf.chanreq.oper.width;
00387f32 1490 if (flags & IEEE80211_PROBE_FLAG_DIRECTED)
2103dec1 1491 chandef.chan = NULL;
a806c558 1492 else
2103dec1 1493 chandef.chan = chan;
651b5225 1494
a344d677 1495 skb = ieee80211_probereq_get(&local->hw, src, ssid, ssid_len,
f22d9813 1496 local->scan_ies_len + ie_len);
5b2bbf75 1497 if (!skb)
b9a9ada1
JB		 1498 return NULL;
1499
c56ef672 1500 rate_masks[chan->band] = ratemask;
07095d16
JB		 1501 ieee80211_put_preq_ies(skb, sdata, &dummy_ie_desc,
1502 ie, ie_len, BIT(chan->band),
1503 rate_masks, &chandef, flags);
7c12ce8b 1504
46900298 1505 if (dst) {
7c12ce8b 1506 mgmt = (struct ieee80211_mgmt *) skb->data;
46900298
JB		 1507 memcpy(mgmt->da, dst, ETH_ALEN);
1508 memcpy(mgmt->bssid, dst, ETH_ALEN);
46900298 1509 }
46900298 1510
62ae67be 1511 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
5b2bbf75 1512
a619a4c0
JO		 1513 return skb;
1514}
1515
2103dec1 1516u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
46900298 1517 struct ieee802_11_elems *elems,
57fbcce3 1518 enum nl80211_band band, u32 *basic_rates)
46900298
JB		 1519{
1520 struct ieee80211_supported_band *sband;
46900298 1521 size_t num_rates;
2103dec1 1522 u32 supp_rates, rate_flags;
2400dfe2 1523 int i, j;
21a8e9dd 1524
2103dec1 1525 sband = sdata->local->hw.wiphy->bands[band];
21a8e9dd
MSS		 1526 if (WARN_ON(!sband))
1527 return 1;
2103dec1 1528
6092077a
JB		 1529 rate_flags =
1530 ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chanreq.oper);
46900298 1531
46900298
JB		 1532 num_rates = sband->n_bitrates;
1533 supp_rates = 0;
1534 for (i = 0; i < elems->supp_rates_len +
1535 elems->ext_supp_rates_len; i++) {
1536 u8 rate = 0;
1537 int own_rate;
9ebb61a2 1538 bool is_basic;
46900298
JB		 1539 if (i < elems->supp_rates_len)
1540 rate = elems->supp_rates[i];
1541 else if (elems->ext_supp_rates)
1542 rate = elems->ext_supp_rates
1543 [i - elems->supp_rates_len];
1544 own_rate = 5 * (rate & 0x7f);
9ebb61a2
AN		 1545 is_basic = !!(rate & 0x80);
1546
1547 if (is_basic && (rate & 0x7f) == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
1548 continue;
1549
1550 for (j = 0; j < num_rates; j++) {
2103dec1
SW		 1551 int brate;
1552 if ((rate_flags & sband->bitrates[j].flags)
1553 != rate_flags)
1554 continue;
1555
2400dfe2 1556 brate = sband->bitrates[j].bitrate;
2103dec1
SW		 1557
1558 if (brate == own_rate) {
46900298 1559 supp_rates |= BIT(j);
9ebb61a2
AN		 1560 if (basic_rates && is_basic)
1561 *basic_rates |= BIT(j);
1562 }
1563 }
46900298
JB		 1564 }
1565 return supp_rates;
1566}
f2753ddb 1567
84f6a01c
JB		 1568void ieee80211_stop_device(struct ieee80211_local *local)
1569{
177c6ae9
JB		 1570 ieee80211_handle_queued_frames(local);
1571
84f6a01c 1572 ieee80211_led_radio(local, false);
67408c8c 1573 ieee80211_mod_tpt_led_trig(local, 0, IEEE80211_TPT_LEDTRIG_FL_RADIO);
84f6a01c 1574
a6add8be 1575 wiphy_work_cancel(local->hw.wiphy, &local->reconfig_filter);
84f6a01c
JB		 1576
1577 flush_workqueue(local->workqueue);
b920590f 1578 wiphy_work_flush(local->hw.wiphy, NULL);
678f415f 1579 drv_stop(local);
84f6a01c
JB		 1580}
1581
74430f94
JB		 1582static void ieee80211_flush_completed_scan(struct ieee80211_local *local,
1583 bool aborted)
1584{
1585 /* It's possible that we don't handle the scan completion in
1586 * time during suspend, so if it's still marked as completed
1587 * here, queue the work and flush it to clean things up.
1588 * Instead of calling the worker function directly here, we
1589 * really queue it to avoid potential races with other flows
1590 * scheduling the same work.
1591 */
1592 if (test_bit(SCAN_COMPLETED, &local->scanning)) {
1593 /* If coming from reconfiguration failure, abort the scan so
1594 * we don't attempt to continue a partial HW scan - which is
1595 * possible otherwise if (e.g.) the 2.4 GHz portion was the
1596 * completed scan, and a 5 GHz portion is still pending.
1597 */
1598 if (aborted)
1599 set_bit(SCAN_ABORTED, &local->scanning);
20171251
JB		 1600 wiphy_delayed_work_queue(local->hw.wiphy, &local->scan_work, 0);
1601 wiphy_delayed_work_flush(local->hw.wiphy, &local->scan_work);
74430f94
JB		 1602 }
1603}
1604
f6837ba8
JB		 1605static void ieee80211_handle_reconfig_failure(struct ieee80211_local *local)
1606{
1607 struct ieee80211_sub_if_data *sdata;
1608 struct ieee80211_chanctx *ctx;
1609
5435af6e
JB		 1610 lockdep_assert_wiphy(local->hw.wiphy);
1611
f6837ba8
JB		 1612 /*
1613 * We get here if during resume the device can't be restarted properly.
1614 * We might also get here if this happens during HW reset, which is a
1615 * slightly different situation and we need to drop all connections in
1616 * the latter case.
1617 *
1618 * Ask cfg80211 to turn off all interfaces, this will result in more
1619 * warnings but at least we'll then get into a clean stopped state.
1620 */
1621
1622 local->resuming = false;
1623 local->suspended = false;
7584f88f 1624 local->in_reconfig = false;
c4fdb081 1625 local->reconfig_failure = true;
f6837ba8 1626
74430f94
JB		 1627 ieee80211_flush_completed_scan(local, true);
1628
f6837ba8
JB		 1629 /* scheduled scan clearly can't be running any more, but tell
1630 * cfg80211 and clear local state
1631 */
1632 ieee80211_sched_scan_end(local);
1633
1634 list_for_each_entry(sdata, &local->interfaces, list)
1635 sdata->flags &= ~IEEE80211_SDATA_IN_DRIVER;
1636
1637 /* Mark channel contexts as not being in the driver any more to avoid
1638 * removing them from the driver during the shutdown process...
1639 */
f6837ba8
JB		 1640 list_for_each_entry(ctx, &local->chanctx_list, list)
1641 ctx->driver_present = false;
f6837ba8
JB		 1642}
1643
153a5fc4 1644static void ieee80211_assign_chanctx(struct ieee80211_local *local,
b4f85443 1645 struct ieee80211_sub_if_data *sdata,
d8675a63 1646 struct ieee80211_link_data *link)
153a5fc4
SG		 1647{
1648 struct ieee80211_chanctx_conf *conf;
1649 struct ieee80211_chanctx *ctx;
1650
5435af6e
JB		 1651 lockdep_assert_wiphy(local->hw.wiphy);
1652
d8675a63 1653 conf = rcu_dereference_protected(link->conf->chanctx_conf,
5435af6e 1654 lockdep_is_held(&local->hw.wiphy->mtx));
153a5fc4
SG		 1655 if (conf) {
1656 ctx = container_of(conf, struct ieee80211_chanctx, conf);
727eff4d 1657 drv_assign_vif_chanctx(local, sdata, link->conf, ctx);
153a5fc4 1658 }
153a5fc4
SG		 1659}
1660
1ea2c864
JB		 1661static void ieee80211_reconfig_stations(struct ieee80211_sub_if_data *sdata)
1662{
1663 struct ieee80211_local *local = sdata->local;
1664 struct sta_info *sta;
1665
4d3acf43 1666 lockdep_assert_wiphy(local->hw.wiphy);
5435af6e
JB		 1667
1668 /* add STAs back */
1ea2c864
JB		 1669 list_for_each_entry(sta, &local->sta_list, list) {
1670 enum ieee80211_sta_state state;
1671
1672 if (!sta->uploaded || sta->sdata != sdata)
1673 continue;
1674
1675 for (state = IEEE80211_STA_NOTEXIST;
1676 state < sta->sta_state; state++)
1677 WARN_ON(drv_sta_state(local, sta->sdata, sta, state,
1678 state + 1));
1679 }
1ea2c864
JB		 1680}
1681
167e33f4
AB		 1682static int ieee80211_reconfig_nan(struct ieee80211_sub_if_data *sdata)
1683{
1684 struct cfg80211_nan_func *func, **funcs;
1685 int res, id, i = 0;
1686
1687 res = drv_start_nan(sdata->local, sdata,
1688 &sdata->u.nan.conf);
1689 if (WARN_ON(res))
1690 return res;
1691
6396bb22
KC		 1692 funcs = kcalloc(sdata->local->hw.max_nan_de_entries + 1,
1693 sizeof(*funcs),
1694 GFP_KERNEL);
167e33f4
AB		 1695 if (!funcs)
1696 return -ENOMEM;
1697
1698 /* Add all the functions:
1699 * This is a little bit ugly. We need to call a potentially sleeping
1700 * callback for each NAN function, so we can't hold the spinlock.
1701 */
1702 spin_lock_bh(&sdata->u.nan.func_lock);
1703
1704 idr_for_each_entry(&sdata->u.nan.function_inst_ids, func, id)
1705 funcs[i++] = func;
1706
1707 spin_unlock_bh(&sdata->u.nan.func_lock);
1708
1709 for (i = 0; funcs[i]; i++) {
1710 res = drv_add_nan_func(sdata->local, sdata, funcs[i]);
1711 if (WARN_ON(res))
1712 ieee80211_nan_func_terminated(&sdata->vif,
1713 funcs[i]->instance_id,
1714 NL80211_NAN_FUNC_TERM_REASON_ERROR,
1715 GFP_KERNEL);
1716 }
1717
1718 kfree(funcs);
1719
1720 return 0;
1721}
1722
61403414
JB		 1723static void ieee80211_reconfig_ap_links(struct ieee80211_local *local,
1724 struct ieee80211_sub_if_data *sdata,
2a5325f8 1725 u64 changed)
61403414
JB		 1726{
1727 int link_id;
1728
1729 for (link_id = 0; link_id < ARRAY_SIZE(sdata->link); link_id++) {
1730 struct ieee80211_link_data *link;
1731
1732 if (!(sdata->vif.active_links & BIT(link_id)))
1733 continue;
1734
1735 link = sdata_dereference(sdata->link[link_id], sdata);
1736 if (!link)
1737 continue;
1738
1739 if (rcu_access_pointer(link->u.ap.beacon))
1740 drv_start_ap(local, sdata, link->conf);
1741
1742 if (!link->conf->enable_beacon)
1743 continue;
1744
1745 changed |= BSS_CHANGED_BEACON |
1746 BSS_CHANGED_BEACON_ENABLED;
1747
1748 ieee80211_link_info_change_notify(sdata, link, changed);
1749 }
1750}
1751
f2753ddb
JB		 1752int ieee80211_reconfig(struct ieee80211_local *local)
1753{
1754 struct ieee80211_hw *hw = &local->hw;
1755 struct ieee80211_sub_if_data *sdata;
55de908a 1756 struct ieee80211_chanctx *ctx;
f2753ddb 1757 struct sta_info *sta;
2683d65b 1758 int res, i;
d888130a 1759 bool reconfig_due_to_wowlan = false;
d43c6b6e 1760 struct ieee80211_sub_if_data *sched_scan_sdata;
6ea0a69c 1761 struct cfg80211_sched_scan_request *sched_scan_req;
d43c6b6e 1762 bool sched_scan_stopped = false;
b0485e9f 1763 bool suspended = local->suspended;
7d352ccf 1764 bool in_reconfig = false;
d888130a 1765
5435af6e
JB		 1766 lockdep_assert_wiphy(local->hw.wiphy);
1767
0f8b8245
EP		 1768 /* nothing to do if HW shouldn't run */
1769 if (!local->open_count)
1770 goto wake_up;
1771
8f21b0ad 1772#ifdef CONFIG_PM
b0485e9f 1773 if (suspended)
ceb99fe0 1774 local->resuming = true;
f2753ddb 1775
eecc4800 1776 if (local->wowlan) {
b0485e9f
EP		 1777 /*
1778 * In the wowlan case, both mac80211 and the device
1779 * are functional when the resume op is called, so
1780 * clear local->suspended so the device could operate
1781 * normally (e.g. pass rx frames).
1782 */
1783 local->suspended = false;
eecc4800 1784 res = drv_resume(local);
27b3eb9c 1785 local->wowlan = false;
eecc4800
JB		 1786 if (res < 0) {
1787 local->resuming = false;
1788 return res;
1789 }
1790 if (res == 0)
1791 goto wake_up;
1792 WARN_ON(res > 1);
1793 /*
1794 * res is 1, which means the driver requested
1795 * to go through a regular reset on wakeup.
b0485e9f 1796 * restore local->suspended in this case.
eecc4800 1797 */
d888130a 1798 reconfig_due_to_wowlan = true;
b0485e9f 1799 local->suspended = true;
eecc4800
JB		 1800 }
1801#endif
f2753ddb 1802
43d6df00
EP		 1803 /*
1804 * In case of hw_restart during suspend (without wowlan),
1805 * cancel restart work, as we are reconfiguring the device
1806 * anyway.
1807 * Note that restart_work is scheduled on a frozen workqueue,
1808 * so we can't deadlock in this case.
1809 */
1810 if (suspended && local->in_reconfig && !reconfig_due_to_wowlan)
1811 cancel_work_sync(&local->restart_work);
1812
968a76ce
EP		 1813 local->started = false;
1814
94f9b97b
JB		 1815 /*
1816 * Upon resume hardware can sometimes be goofy due to
1817 * various platform / driver / bus issues, so restarting
1818 * the device may at times not work immediately. Propagate
1819 * the error.
1820 */
1821 res = drv_start(local);
1822 if (res) {
b0485e9f 1823 if (suspended)
f6837ba8
JB		 1824 WARN(1, "Hardware became unavailable upon resume. This could be a software issue prior to suspend or a hardware issue.\n");
1825 else
1826 WARN(1, "Hardware became unavailable during restart.\n");
1827 ieee80211_handle_reconfig_failure(local);
94f9b97b 1828 return res;
f2753ddb
JB		 1829 }
1830
7f281975
YAP		 1831 /* setup fragmentation threshold */
1832 drv_set_frag_threshold(local, hw->wiphy->frag_threshold);
1833
1834 /* setup RTS threshold */
1835 drv_set_rts_threshold(local, hw->wiphy->rts_threshold);
1836
1837 /* reset coverage class */
1838 drv_set_coverage_class(local, hw->wiphy->coverage_class);
1839
94f9b97b
JB		 1840 ieee80211_led_radio(local, true);
1841 ieee80211_mod_tpt_led_trig(local,
1842 IEEE80211_TPT_LEDTRIG_FL_RADIO, 0);
1843
f2753ddb 1844 /* add interfaces */
6dd23603 1845 sdata = wiphy_dereference(local->hw.wiphy, local->monitor_sdata);
4b6f1dd6 1846 if (sdata) {
3c3e21e7
JB		 1847 /* in HW restart it exists already */
1848 WARN_ON(local->resuming);
4b6f1dd6
JB		 1849 res = drv_add_interface(local, sdata);
1850 if (WARN_ON(res)) {
0c2bef46 1851 RCU_INIT_POINTER(local->monitor_sdata, NULL);
4b6f1dd6
JB		 1852 synchronize_net();
1853 kfree(sdata);
1854 }
1855 }
1856
f2753ddb
JB		 1857 list_for_each_entry(sdata, &local->interfaces, list) {
1858 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1859 sdata->vif.type != NL80211_IFTYPE_MONITOR &&
c8fff3dc 1860 ieee80211_sdata_running(sdata)) {
7b7eab6f 1861 res = drv_add_interface(local, sdata);
c8fff3dc
LC		 1862 if (WARN_ON(res))
1863 break;
1864 }
1865 }
1866
1867 /* If adding any of the interfaces failed above, roll back and
1868 * report failure.
1869 */
1870 if (res) {
1871 list_for_each_entry_continue_reverse(sdata, &local->interfaces,
1872 list)
1873 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1874 sdata->vif.type != NL80211_IFTYPE_MONITOR &&
1875 ieee80211_sdata_running(sdata))
1876 drv_remove_interface(local, sdata);
1877 ieee80211_handle_reconfig_failure(local);
1878 return res;
f2753ddb
JB		 1879 }
1880
55de908a 1881 /* add channel contexts */
0a44dfc0
JB		 1882 list_for_each_entry(ctx, &local->chanctx_list, list)
1883 if (ctx->replace_state != IEEE80211_CHANCTX_REPLACES_OTHER)
1884 WARN_ON(drv_add_chanctx(local, ctx));
1885
1886 sdata = wiphy_dereference(local->hw.wiphy, local->monitor_sdata);
1887 if (sdata && ieee80211_sdata_running(sdata))
1888 ieee80211_assign_chanctx(local, sdata, &sdata->deflink);
fe5f2559 1889
f2753ddb 1890 /* reconfigure hardware */
0a44dfc0
JB		 1891 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_LISTEN_INTERVAL |
1892 IEEE80211_CONF_CHANGE_MONITOR |
1893 IEEE80211_CONF_CHANGE_PS |
1894 IEEE80211_CONF_CHANGE_RETRY_LIMITS |
1895 IEEE80211_CONF_CHANGE_IDLE);
f2753ddb 1896
f2753ddb 1897 ieee80211_configure_filter(local);
f2753ddb
JB		 1898
1899 /* Finally also reconfigure all the BSS information */
1900 list_for_each_entry(sdata, &local->interfaces, list) {
acb8bca3 1901 /* common change flags for all interface types - link only */
2a5325f8 1902 u64 changed = BSS_CHANGED_ERP_CTS_PROT |
acb8bca3
JB		 1903 BSS_CHANGED_ERP_PREAMBLE |
1904 BSS_CHANGED_ERP_SLOT |
1905 BSS_CHANGED_HT |
1906 BSS_CHANGED_BASIC_RATES |
1907 BSS_CHANGED_BEACON_INT |
1908 BSS_CHANGED_BSSID |
1909 BSS_CHANGED_CQM |
1910 BSS_CHANGED_QOS |
1911 BSS_CHANGED_TXPOWER |
1912 BSS_CHANGED_MCAST_RATE;
1913 struct ieee80211_link_data *link = NULL;
d8675a63 1914 unsigned int link_id;
acb8bca3 1915 u32 active_links = 0;
ac8dd506 1916
9607e6b6 1917 if (!ieee80211_sdata_running(sdata))
f2753ddb 1918 continue;
ac8dd506 1919
f1871abd 1920 if (ieee80211_vif_is_mld(&sdata->vif)) {
acb8bca3
JB		 1921 struct ieee80211_bss_conf *old[IEEE80211_MLD_MAX_NUM_LINKS] = {
1922 [0] = &sdata->vif.bss_conf,
1923 };
1924
1925 if (sdata->vif.type == NL80211_IFTYPE_STATION) {
1926 /* start with a single active link */
1927 active_links = sdata->vif.active_links;
1928 link_id = ffs(active_links) - 1;
1929 sdata->vif.active_links = BIT(link_id);
1930 }
1931
1932 drv_change_vif_links(local, sdata, 0,
1933 sdata->vif.active_links,
1934 old);
1935 }
1936
a0b9ecff
JB		 1937 sdata->restart_active_links = active_links;
1938
d8675a63
JB		 1939 for (link_id = 0;
1940 link_id < ARRAY_SIZE(sdata->vif.link_conf);
1941 link_id++) {
68f6c6af 1942 if (!ieee80211_vif_link_active(&sdata->vif, link_id))
acb8bca3 1943 continue;
d8675a63
JB		 1944
1945 link = sdata_dereference(sdata->link[link_id], sdata);
acb8bca3
JB		 1946 if (!link)
1947 continue;
1948
1949 ieee80211_assign_chanctx(local, sdata, link);
b4f85443 1950 }
1ea2c864
JB		 1951
1952 switch (sdata->vif.type) {
1953 case NL80211_IFTYPE_AP_VLAN:
1954 case NL80211_IFTYPE_MONITOR:
1955 break;
4926b51b 1956 case NL80211_IFTYPE_ADHOC:
f276e20b 1957 if (sdata->vif.cfg.ibss_joined)
4926b51b 1958 WARN_ON(drv_join_ibss(local, sdata));
fc0561dc 1959 fallthrough;
1ea2c864
JB		 1960 default:
1961 ieee80211_reconfig_stations(sdata);
fc0561dc 1962 fallthrough;
1ea2c864
JB		 1963 case NL80211_IFTYPE_AP: /* AP stations are handled later */
1964 for (i = 0; i < IEEE80211_NUM_ACS; i++)
b3e2130b
JB		 1965 drv_conf_tx(local, &sdata->deflink, i,
1966 &sdata->deflink.tx_conf[i]);
1ea2c864
JB		 1967 break;
1968 }
ac8dd506 1969
d0a9123e 1970 if (sdata->vif.bss_conf.mu_mimo_owner)
23a1f8d4
SS		 1971 changed |= BSS_CHANGED_MU_GROUPS;
1972
f1871abd 1973 if (!ieee80211_vif_is_mld(&sdata->vif))
acb8bca3
JB		 1974 changed |= BSS_CHANGED_IDLE;
1975
f2753ddb
JB		 1976 switch (sdata->vif.type) {
1977 case NL80211_IFTYPE_STATION:
f1871abd 1978 if (!ieee80211_vif_is_mld(&sdata->vif)) {
acb8bca3
JB		 1979 changed |= BSS_CHANGED_ASSOC |
1980 BSS_CHANGED_ARP_FILTER |
1981 BSS_CHANGED_PS;
1982
1983 /* Re-send beacon info report to the driver */
1984 if (sdata->deflink.u.mgd.have_beacon)
1985 changed |= BSS_CHANGED_BEACON_INFO;
1986
1987 if (sdata->vif.bss_conf.max_idle_period ||
1988 sdata->vif.bss_conf.protected_keep_alive)
1989 changed |= BSS_CHANGED_KEEP_ALIVE;
1990
acb8bca3
JB		 1991 ieee80211_bss_info_change_notify(sdata,
1992 changed);
1993 } else if (!WARN_ON(!link)) {
1994 ieee80211_link_info_change_notify(sdata, link,
1995 changed);
1996 changed = BSS_CHANGED_ASSOC |
1997 BSS_CHANGED_IDLE |
1998 BSS_CHANGED_PS |
1999 BSS_CHANGED_ARP_FILTER;
2000 ieee80211_vif_cfg_change_notify(sdata, changed);
2001 }
ac8dd506 2002 break;
6e0bd6c3 2003 case NL80211_IFTYPE_OCB:
239281f8
RL		 2004 changed |= BSS_CHANGED_OCB;
2005 ieee80211_bss_info_change_notify(sdata, changed);
6e0bd6c3 2006 break;
f2753ddb 2007 case NL80211_IFTYPE_ADHOC:
ac8dd506 2008 changed |= BSS_CHANGED_IBSS;
fc0561dc 2009 fallthrough;
f2753ddb 2010 case NL80211_IFTYPE_AP:
61403414
JB		 2011 changed |= BSS_CHANGED_P2P_PS;
2012
f1871abd 2013 if (ieee80211_vif_is_mld(&sdata->vif))
61403414
JB		 2014 ieee80211_vif_cfg_change_notify(sdata,
2015 BSS_CHANGED_SSID);
2016 else
2017 changed |= BSS_CHANGED_SSID;
e7979ac7 2018
bc847970
PKC		 2019 if (sdata->vif.bss_conf.ftm_responder == 1 &&
2020 wiphy_ext_feature_isset(sdata->local->hw.wiphy,
2021 NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER))
2022 changed |= BSS_CHANGED_FTM_RESPONDER;
2023
1041638f 2024 if (sdata->vif.type == NL80211_IFTYPE_AP) {
e7979ac7
AN		 2025 changed |= BSS_CHANGED_AP_PROBE_RESP;
2026
f1871abd 2027 if (ieee80211_vif_is_mld(&sdata->vif)) {
61403414
JB		 2028 ieee80211_reconfig_ap_links(local,
2029 sdata,
2030 changed);
2031 break;
2032 }
2033
bfd8403a 2034 if (rcu_access_pointer(sdata->deflink.u.ap.beacon))
b327c84c
GG		 2035 drv_start_ap(local, sdata,
2036 sdata->deflink.conf);
1041638f 2037 }
fc0561dc 2038 fallthrough;
f2753ddb 2039 case NL80211_IFTYPE_MESH_POINT:
8da34932
JB		 2040 if (sdata->vif.bss_conf.enable_beacon) {
2041 changed |= BSS_CHANGED_BEACON |
2042 BSS_CHANGED_BEACON_ENABLED;
2043 ieee80211_bss_info_change_notify(sdata, changed);
2044 }
f2753ddb 2045 break;
167e33f4
AB		 2046 case NL80211_IFTYPE_NAN:
2047 res = ieee80211_reconfig_nan(sdata);
2048 if (res < 0) {
2049 ieee80211_handle_reconfig_failure(local);
2050 return res;
2051 }
2052 break;
f2753ddb
JB		 2053 case NL80211_IFTYPE_AP_VLAN:
2054 case NL80211_IFTYPE_MONITOR:
98104fde 2055 case NL80211_IFTYPE_P2P_DEVICE:
b205786e 2056 /* nothing to do */
f142c6b9 2057 break;
f2753ddb 2058 case NL80211_IFTYPE_UNSPECIFIED:
2e161f78 2059 case NUM_NL80211_IFTYPES:
2ca27bcf
JB		 2060 case NL80211_IFTYPE_P2P_CLIENT:
2061 case NL80211_IFTYPE_P2P_GO:
70d9c599 2062 case NL80211_IFTYPE_WDS:
f2753ddb
JB		 2063 WARN_ON(1);
2064 break;
2065 }
2066 }
2067
4a733ef1 2068 ieee80211_recalc_ps(local);
8e1b23b9 2069
6e1b1b24
EP		 2070 /*
2071 * The sta might be in psm against the ap (e.g. because
2072 * this was the state before a hw restart), so we
2073 * explicitly send a null packet in order to make sure
2074 * it'll sync against the ap (and get out of psm).
2075 */
2076 if (!(local->hw.conf.flags & IEEE80211_CONF_PS)) {
2077 list_for_each_entry(sdata, &local->interfaces, list) {
2078 if (sdata->vif.type != NL80211_IFTYPE_STATION)
2079 continue;
20f544ee
JB		 2080 if (!sdata->u.mgd.associated)
2081 continue;
6e1b1b24 2082
076cdcb1 2083 ieee80211_send_nullfunc(local, sdata, false);
6e1b1b24
EP		 2084 }
2085 }
2086
2e8d397e 2087 /* APs are now beaconing, add back stations */
48c5d82a
JB		 2088 list_for_each_entry(sdata, &local->interfaces, list) {
2089 if (!ieee80211_sdata_running(sdata))
2e8d397e
AN		 2090 continue;
2091
48c5d82a
JB		 2092 switch (sdata->vif.type) {
2093 case NL80211_IFTYPE_AP_VLAN:
2094 case NL80211_IFTYPE_AP:
2095 ieee80211_reconfig_stations(sdata);
2096 break;
2097 default:
2098 break;
2099 }
2e8d397e 2100 }
2e8d397e 2101
7b21aea0 2102 /* add back keys */
f9dca80b 2103 list_for_each_entry(sdata, &local->interfaces, list)
624ff4b2 2104 ieee80211_reenable_keys(sdata);
7b21aea0 2105
a0b9ecff
JB		 2106 /* re-enable multi-link for client interfaces */
2107 list_for_each_entry(sdata, &local->interfaces, list) {
2108 if (sdata->restart_active_links)
2109 ieee80211_set_active_links(&sdata->vif,
2110 sdata->restart_active_links);
c6d075be
MK		 2111 /*
2112 * If a link switch was scheduled before the restart, and ran
2113 * before reconfig, it will do nothing, so re-schedule.
2114 */
2115 if (sdata->desired_active_links)
2116 wiphy_work_queue(sdata->local->hw.wiphy,
2117 &sdata->activate_links_work);
a0b9ecff
JB		 2118 }
2119
0d440ea2 2120 /* Reconfigure sched scan if it was interrupted by FW restart */
0d440ea2 2121 sched_scan_sdata = rcu_dereference_protected(local->sched_scan_sdata,
0cd8080e 2122 lockdep_is_held(&local->hw.wiphy->mtx));
0d440ea2 2123 sched_scan_req = rcu_dereference_protected(local->sched_scan_req,
0cd8080e 2124 lockdep_is_held(&local->hw.wiphy->mtx));
0d440ea2
EP		 2125 if (sched_scan_sdata && sched_scan_req)
2126 /*
2127 * Sched scan stopped, but we don't want to report it. Instead,
2128 * we're trying to reschedule. However, if more than one scan
2129 * plan was set, we cannot reschedule since we don't know which
2130 * scan plan was currently running (and some scan plans may have
2131 * already finished).
2132 */
2133 if (sched_scan_req->n_scan_plans > 1 ||
2134 __ieee80211_request_sched_scan_start(sched_scan_sdata,
b9f628fc
EP		 2135 sched_scan_req)) {
2136 RCU_INIT_POINTER(local->sched_scan_sdata, NULL);
2137 RCU_INIT_POINTER(local->sched_scan_req, NULL);
0d440ea2 2138 sched_scan_stopped = true;
b9f628fc 2139 }
0d440ea2
EP		 2140
2141 if (sched_scan_stopped)
a05829a7 2142 cfg80211_sched_scan_stopped_locked(local->hw.wiphy, 0);
0d440ea2 2143
c6209488 2144 wake_up:
04800ada 2145
3c3e21e7
JB		 2146 if (local->monitors == local->open_count && local->monitors > 0)
2147 ieee80211_add_virtual_monitor(local);
2148
2a419056
JB		 2149 /*
2150 * Clear the WLAN_STA_BLOCK_BA flag so new aggregation
2151 * sessions can be established after a resume.
2152 *
2153 * Also tear down aggregation sessions since reconfiguring
2154 * them in a hardware restart scenario is not easily done
2155 * right now, and the hardware will have lost information
2156 * about the sessions, but we and the AP still think they
2157 * are active. This is really a workaround though.
2158 */
30686bf7 2159 if (ieee80211_hw_check(hw, AMPDU_AGGREGATION)) {
2a419056 2160 list_for_each_entry(sta, &local->sta_list, list) {
27392719
EP		 2161 if (!local->resuming)
2162 ieee80211_sta_tear_down_BA_sessions(
2163 sta, AGG_STOP_LOCAL_REQUEST);
c2c98fde 2164 clear_sta_flag(sta, WLAN_STA_BLOCK_BA);
74e2bd1f
WYG		 2165 }
2166 }
74e2bd1f 2167
13dee10b
JB		 2168 /*
2169 * If this is for hw restart things are still running.
2170 * We may want to change that later, however.
2171 */
2172 if (local->open_count && (!suspended || reconfig_due_to_wowlan))
2173 drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_RESTART);
2174
2316380f 2175 if (local->in_reconfig) {
7d352ccf 2176 in_reconfig = local->in_reconfig;
2316380f
SS		 2177 local->in_reconfig = false;
2178 barrier();
2179
2180 /* Restart deferred ROCs */
2316380f 2181 ieee80211_start_next_roc(local);
f8891461
NG		 2182
2183 /* Requeue all works */
2184 list_for_each_entry(sdata, &local->interfaces, list)
16114496 2185 wiphy_work_queue(local->hw.wiphy, &sdata->work);
2316380f
SS		 2186 }
2187
445ea4e8 2188 ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
cca07b00
LC		 2189 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
2190 false);
f2753ddb 2191
7d352ccf
YC		 2192 if (in_reconfig) {
2193 list_for_each_entry(sdata, &local->interfaces, list) {
2194 if (!ieee80211_sdata_running(sdata))
2195 continue;
2196 if (sdata->vif.type == NL80211_IFTYPE_STATION)
2197 ieee80211_sta_restart(sdata);
2198 }
2199 }
2200
b0485e9f 2201 if (!suspended)
5bb644a0
JB		 2202 return 0;
2203
2204#ifdef CONFIG_PM
ceb99fe0 2205 /* first set suspended false, then resuming */
5bb644a0 2206 local->suspended = false;
ceb99fe0
JB		 2207 mb();
2208 local->resuming = false;
5bb644a0 2209
74430f94 2210 ieee80211_flush_completed_scan(local, false);
9120d94e 2211
0f8b8245 2212 if (local->open_count && !reconfig_due_to_wowlan)
cf2c92d8
EP		 2213 drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_SUSPEND);
2214
b8360ab8
JB		 2215 list_for_each_entry(sdata, &local->interfaces, list) {
2216 if (!ieee80211_sdata_running(sdata))
2217 continue;
2218 if (sdata->vif.type == NL80211_IFTYPE_STATION)
2219 ieee80211_sta_restart(sdata);
2220 }
2221
26d59535 2222 mod_timer(&local->sta_cleanup, jiffies + 1);
5bb644a0
JB		 2223#else
2224 WARN_ON(1);
2225#endif
d43c6b6e 2226
f2753ddb
JB		 2227 return 0;
2228}
42935eca 2229
7d352ccf 2230static void ieee80211_reconfig_disconnect(struct ieee80211_vif *vif, u8 flag)
95acac61
JB		 2231{
2232 struct ieee80211_sub_if_data *sdata;
2233 struct ieee80211_local *local;
2234 struct ieee80211_key *key;
2235
2236 if (WARN_ON(!vif))
2237 return;
2238
2239 sdata = vif_to_sdata(vif);
2240 local = sdata->local;
2241
2a8b665e
JB		 2242 lockdep_assert_wiphy(local->hw.wiphy);
2243
7d352ccf
YC		 2244 if (WARN_ON(flag & IEEE80211_SDATA_DISCONNECT_RESUME &&
2245 !local->resuming))
2246 return;
2247
2248 if (WARN_ON(flag & IEEE80211_SDATA_DISCONNECT_HW_RESTART &&
2249 !local->in_reconfig))
95acac61
JB		 2250 return;
2251
2252 if (WARN_ON(vif->type != NL80211_IFTYPE_STATION))
2253 return;
2254
7d352ccf 2255 sdata->flags |= flag;
95acac61 2256
95acac61
JB		 2257 list_for_each_entry(key, &sdata->key_list, list)
2258 key->flags |= KEY_FLAG_TAINTED;
95acac61 2259}
7d352ccf
YC		 2260
2261void ieee80211_hw_restart_disconnect(struct ieee80211_vif *vif)
2262{
2263 ieee80211_reconfig_disconnect(vif, IEEE80211_SDATA_DISCONNECT_HW_RESTART);
2264}
2265EXPORT_SYMBOL_GPL(ieee80211_hw_restart_disconnect);
2266
2267void ieee80211_resume_disconnect(struct ieee80211_vif *vif)
2268{
2269 ieee80211_reconfig_disconnect(vif, IEEE80211_SDATA_DISCONNECT_RESUME);
2270}
95acac61
JB		 2271EXPORT_SYMBOL_GPL(ieee80211_resume_disconnect);
2272
e9aac179 2273void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata,
d8675a63 2274 struct ieee80211_link_data *link)
0f78231b 2275{
04ecd257
JB		 2276 struct ieee80211_local *local = sdata->local;
2277 struct ieee80211_chanctx_conf *chanctx_conf;
2278 struct ieee80211_chanctx *chanctx;
025e6be2 2279
5435af6e 2280 lockdep_assert_wiphy(local->hw.wiphy);
0f78231b 2281
d8675a63 2282 chanctx_conf = rcu_dereference_protected(link->conf->chanctx_conf,
5435af6e 2283 lockdep_is_held(&local->hw.wiphy->mtx));
0f78231b 2284
c189a685
AO		 2285 /*
2286 * This function can be called from a work, thus it may be possible
2287 * that the chanctx_conf is removed (due to a disconnection, for
2288 * example).
2289 * So nothing should be done in such case.
2290 */
2291 if (!chanctx_conf)
5435af6e 2292 return;
0f78231b 2293
04ecd257
JB		 2294 chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf);
2295 ieee80211_recalc_smps_chanctx(local, chanctx);
0f78231b 2296}
8e664fb3 2297
0cbf348a
AO		 2298void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata,
2299 int link_id)
21f659bf
EP		 2300{
2301 struct ieee80211_local *local = sdata->local;
2302 struct ieee80211_chanctx_conf *chanctx_conf;
2303 struct ieee80211_chanctx *chanctx;
0cbf348a 2304 int i;
21f659bf 2305
5435af6e 2306 lockdep_assert_wiphy(local->hw.wiphy);
21f659bf 2307
0cbf348a
AO		 2308 for (i = 0; i < ARRAY_SIZE(sdata->vif.link_conf); i++) {
2309 struct ieee80211_bss_conf *bss_conf;
21f659bf 2310
0cbf348a
AO		 2311 if (link_id >= 0 && link_id != i)
2312 continue;
21f659bf 2313
0cbf348a
AO		 2314 rcu_read_lock();
2315 bss_conf = rcu_dereference(sdata->vif.link_conf[i]);
2316 if (!bss_conf) {
2317 rcu_read_unlock();
2318 continue;
2319 }
2320
2321 chanctx_conf = rcu_dereference_protected(bss_conf->chanctx_conf,
5435af6e 2322 lockdep_is_held(&local->hw.wiphy->mtx));
0cbf348a 2323 /*
5435af6e 2324 * Since we hold the wiphy mutex (checked above)
0cbf348a
AO		 2325 * we can take the chanctx_conf pointer out of the
2326 * RCU critical section, it cannot go away without
2327 * the mutex. Just the way we reached it could - in
2328 * theory - go away, but we don't really care and
2329 * it really shouldn't happen anyway.
2330 */
2331 rcu_read_unlock();
2332
efe9c2bf 2333 if (!chanctx_conf)
5435af6e 2334 return;
0cbf348a
AO		 2335
2336 chanctx = container_of(chanctx_conf, struct ieee80211_chanctx,
2337 conf);
b72a455a 2338 ieee80211_recalc_chanctx_min_def(local, chanctx, NULL);
0cbf348a 2339 }
21f659bf
EP		 2340}
2341
8e664fb3
JB		 2342size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset)
2343{
2344 size_t pos = offset;
2345
2346 while (pos < ielen && ies[pos] != WLAN_EID_VENDOR_SPECIFIC)
2347 pos += 2 + ies[pos + 1];
2348
2349 return pos;
2350}
615f7b9b 2351
ef96a842 2352u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
42e7aa77
AS		 2353 u16 cap)
2354{
2355 __le16 tmp;
2356
2357 *pos++ = WLAN_EID_HT_CAPABILITY;
2358 *pos++ = sizeof(struct ieee80211_ht_cap);
2359 memset(pos, 0, sizeof(struct ieee80211_ht_cap));
2360
2361 /* capability flags */
2362 tmp = cpu_to_le16(cap);
2363 memcpy(pos, &tmp, sizeof(u16));
2364 pos += sizeof(u16);
2365
2366 /* AMPDU parameters */
ef96a842
BG		 2367 *pos++ = ht_cap->ampdu_factor |
2368 (ht_cap->ampdu_density <<
42e7aa77
AS		 2369 IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT);
2370
2371 /* MCS set */
ef96a842
BG		 2372 memcpy(pos, &ht_cap->mcs, sizeof(ht_cap->mcs));
2373 pos += sizeof(ht_cap->mcs);
42e7aa77
AS		 2374
2375 /* extended capabilities */
2376 pos += sizeof(__le16);
2377
2378 /* BF capabilities */
2379 pos += sizeof(__le32);
2380
2381 /* antenna selection */
2382 pos += sizeof(u8);
2383
2384 return pos;
2385}
2386
ba0afa2f 2387u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
cc3983d8 2388 u32 cap)
ba0afa2f
MP		 2389{
2390 __le32 tmp;
2391
2392 *pos++ = WLAN_EID_VHT_CAPABILITY;
d4950281
MP		 2393 *pos++ = sizeof(struct ieee80211_vht_cap);
2394 memset(pos, 0, sizeof(struct ieee80211_vht_cap));
ba0afa2f
MP		 2395
2396 /* capability flags */
2397 tmp = cpu_to_le32(cap);
2398 memcpy(pos, &tmp, sizeof(u32));
2399 pos += sizeof(u32);
2400
2401 /* VHT MCS set */
2402 memcpy(pos, &vht_cap->vht_mcs, sizeof(vht_cap->vht_mcs));
2403 pos += sizeof(vht_cap->vht_mcs);
2404
2405 return pos;
2406}
2407
28aa895b 2408/* this may return more than ieee80211_put_he_6ghz_cap() will need */
90233160 2409u8 ieee80211_ie_len_he_cap(struct ieee80211_sub_if_data *sdata)
60ad72da
SE		 2410{
2411 const struct ieee80211_sta_he_cap *he_cap;
2412 struct ieee80211_supported_band *sband;
2413 u8 n;
2414
2415 sband = ieee80211_get_sband(sdata);
2416 if (!sband)
2417 return 0;
2418
90233160 2419 he_cap = ieee80211_get_he_iftype_cap_vif(sband, &sdata->vif);
60ad72da
SE		 2420 if (!he_cap)
2421 return 0;
2422
2423 n = ieee80211_he_mcs_nss_size(&he_cap->he_cap_elem);
2424 return 2 + 1 +
2425 sizeof(he_cap->he_cap_elem) + n +
2426 ieee80211_he_ppe_size(he_cap->ppe_thres[0],
2427 he_cap->he_cap_elem.phy_cap_info);
2428}
2429
6239da18
JB		 2430static void
2431ieee80211_get_adjusted_he_cap(const struct ieee80211_conn_settings *conn,
2432 const struct ieee80211_sta_he_cap *he_cap,
2433 struct ieee80211_he_cap_elem *elem)
2434{
06b4c866
JB		 2435 u8 ru_limit, max_ru;
2436
6239da18
JB		 2437 *elem = he_cap->he_cap_elem;
2438
06b4c866
JB		 2439 switch (conn->bw_limit) {
2440 case IEEE80211_CONN_BW_LIMIT_20:
2441 ru_limit = IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_242;
2442 break;
2443 case IEEE80211_CONN_BW_LIMIT_40:
2444 ru_limit = IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_484;
2445 break;
2446 case IEEE80211_CONN_BW_LIMIT_80:
2447 ru_limit = IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_996;
2448 break;
2449 default:
2450 ru_limit = IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_2x996;
2451 break;
2452 }
2453
2454 max_ru = elem->phy_cap_info[8] & IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_MASK;
2455 max_ru = min(max_ru, ru_limit);
2456 elem->phy_cap_info[8] &= ~IEEE80211_HE_PHY_CAP8_DCM_MAX_RU_MASK;
2457 elem->phy_cap_info[8] |= max_ru;
2458
2459 if (conn->bw_limit < IEEE80211_CONN_BW_LIMIT_40) {
6239da18
JB		 2460 elem->phy_cap_info[0] &=
2461 ~(IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G |
2462 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_IN_2G);
06b4c866
JB		 2463 elem->phy_cap_info[9] &=
2464 ~IEEE80211_HE_PHY_CAP9_LONGER_THAN_16_SIGB_OFDM_SYM;
2465 }
6239da18 2466
06b4c866 2467 if (conn->bw_limit < IEEE80211_CONN_BW_LIMIT_160) {
6239da18
JB		 2468 elem->phy_cap_info[0] &=
2469 ~(IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G |
2470 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G);
06b4c866
JB		 2471 elem->phy_cap_info[5] &=
2472 ~IEEE80211_HE_PHY_CAP5_BEAMFORMEE_NUM_SND_DIM_ABOVE_80MHZ_MASK;
2473 elem->phy_cap_info[7] &=
2474 ~(IEEE80211_HE_PHY_CAP7_STBC_TX_ABOVE_80MHZ |
2475 IEEE80211_HE_PHY_CAP7_STBC_RX_ABOVE_80MHZ);
2476 }
6239da18
JB		 2477}
2478
28aa895b
JB		 2479int ieee80211_put_he_cap(struct sk_buff *skb,
2480 struct ieee80211_sub_if_data *sdata,
2481 const struct ieee80211_supported_band *sband,
2482 const struct ieee80211_conn_settings *conn)
41cbb0f5 2483{
28aa895b 2484 const struct ieee80211_sta_he_cap *he_cap;
1f2c1044 2485 struct ieee80211_he_cap_elem elem;
28aa895b 2486 u8 *len;
41cbb0f5
LC		 2487 u8 n;
2488 u8 ie_len;
41cbb0f5 2489
310c8387
JB		 2490 if (!conn)
2491 conn = &ieee80211_conn_settings_unlimited;
2492
28aa895b 2493 he_cap = ieee80211_get_he_iftype_cap_vif(sband, &sdata->vif);
41cbb0f5 2494 if (!he_cap)
28aa895b 2495 return 0;
41cbb0f5 2496
1f2c1044 2497 /* modify on stack first to calculate 'n' and 'ie_len' correctly */
6239da18 2498 ieee80211_get_adjusted_he_cap(conn, he_cap, &elem);
1f2c1044
JB		 2499
2500 n = ieee80211_he_mcs_nss_size(&elem);
41cbb0f5
LC		 2501 ie_len = 2 + 1 +
2502 sizeof(he_cap->he_cap_elem) + n +
2503 ieee80211_he_ppe_size(he_cap->ppe_thres[0],
2504 he_cap->he_cap_elem.phy_cap_info);
2505
28aa895b
JB		 2506 if (skb_tailroom(skb) < ie_len)
2507 return -ENOBUFS;
41cbb0f5 2508
28aa895b
JB		 2509 skb_put_u8(skb, WLAN_EID_EXTENSION);
2510 len = skb_put(skb, 1); /* We'll set the size later below */
2511 skb_put_u8(skb, WLAN_EID_EXT_HE_CAPABILITY);
41cbb0f5
LC		 2512
2513 /* Fixed data */
28aa895b 2514 skb_put_data(skb, &elem, sizeof(elem));
41cbb0f5 2515
28aa895b 2516 skb_put_data(skb, &he_cap->he_mcs_nss_supp, n);
41cbb0f5
LC		 2517
2518 /* Check if PPE Threshold should be present */
2519 if ((he_cap->he_cap_elem.phy_cap_info[6] &
2520 IEEE80211_HE_PHY_CAP6_PPE_THRESHOLD_PRESENT) == 0)
2521 goto end;
2522
2523 /*
2524 * Calculate how many PPET16/PPET8 pairs are to come. Algorithm:
2525 * (NSS_M1 + 1) x (num of 1 bits in RU_INDEX_BITMASK)
2526 */
2527 n = hweight8(he_cap->ppe_thres[0] &
2528 IEEE80211_PPE_THRES_RU_INDEX_BITMASK_MASK);
2529 n *= (1 + ((he_cap->ppe_thres[0] & IEEE80211_PPE_THRES_NSS_MASK) >>
2530 IEEE80211_PPE_THRES_NSS_POS));
2531
2532 /*
2533 * Each pair is 6 bits, and we need to add the 7 "header" bits to the
2534 * total size.
2535 */
2536 n = (n * IEEE80211_PPE_THRES_INFO_PPET_SIZE * 2) + 7;
2537 n = DIV_ROUND_UP(n, 8);
2538
2539 /* Copy PPE Thresholds */
28aa895b 2540 skb_put_data(skb, &he_cap->ppe_thres, n);
41cbb0f5
LC		 2541
2542end:
28aa895b
JB		 2543 *len = skb_tail_pointer(skb) - len - 1;
2544 return 0;
41cbb0f5
LC		 2545}
2546
07095d16
JB		 2547int ieee80211_put_he_6ghz_cap(struct sk_buff *skb,
2548 struct ieee80211_sub_if_data *sdata,
2549 enum ieee80211_smps_mode smps_mode)
24a2042c
RM		 2550{
2551 struct ieee80211_supported_band *sband;
2552 const struct ieee80211_sband_iftype_data *iftd;
2553 enum nl80211_iftype iftype = ieee80211_vif_type_p2p(&sdata->vif);
07095d16 2554 __le16 cap;
24a2042c 2555
65be6aa3
JB		 2556 if (!cfg80211_any_usable_channels(sdata->local->hw.wiphy,
2557 BIT(NL80211_BAND_6GHZ),
2558 IEEE80211_CHAN_NO_HE))
07095d16 2559 return 0;
24a2042c 2560
65be6aa3
JB		 2561 sband = sdata->local->hw.wiphy->bands[NL80211_BAND_6GHZ];
2562
24a2042c 2563 iftd = ieee80211_get_sband_iftype_data(sband, iftype);
65be6aa3 2564 if (!iftd)
07095d16 2565 return 0;
24a2042c 2566
65ad3ef9
RM		 2567 /* Check for device HE 6 GHz capability before adding element */
2568 if (!iftd->he_6ghz_capa.capa)
07095d16 2569 return 0;
65ad3ef9 2570
07095d16
JB		 2571 cap = iftd->he_6ghz_capa.capa;
2572 cap &= cpu_to_le16(~IEEE80211_HE_6GHZ_CAP_SM_PS);
24a2042c 2573
abd27d06 2574 switch (smps_mode) {
24a2042c
RM		 2575 case IEEE80211_SMPS_AUTOMATIC:
2576 case IEEE80211_SMPS_NUM_MODES:
2577 WARN_ON(1);
fc0561dc 2578 fallthrough;
24a2042c 2579 case IEEE80211_SMPS_OFF:
07095d16
JB		 2580 cap |= le16_encode_bits(WLAN_HT_CAP_SM_PS_DISABLED,
2581 IEEE80211_HE_6GHZ_CAP_SM_PS);
24a2042c
RM		 2582 break;
2583 case IEEE80211_SMPS_STATIC:
07095d16
JB		 2584 cap |= le16_encode_bits(WLAN_HT_CAP_SM_PS_STATIC,
2585 IEEE80211_HE_6GHZ_CAP_SM_PS);
24a2042c
RM		 2586 break;
2587 case IEEE80211_SMPS_DYNAMIC:
07095d16
JB		 2588 cap |= le16_encode_bits(WLAN_HT_CAP_SM_PS_DYNAMIC,
2589 IEEE80211_HE_6GHZ_CAP_SM_PS);
24a2042c
RM		 2590 break;
2591 }
2592
07095d16
JB		 2593 if (skb_tailroom(skb) < 2 + 1 + sizeof(cap))
2594 return -ENOBUFS;
2595
2596 skb_put_u8(skb, WLAN_EID_EXTENSION);
2597 skb_put_u8(skb, 1 + sizeof(cap));
2598 skb_put_u8(skb, WLAN_EID_EXT_HE_6GHZ_CAPA);
2599 skb_put_data(skb, &cap, sizeof(cap));
2600 return 0;
24a2042c
RM		 2601}
2602
074d46d1 2603u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
4bf88530 2604 const struct cfg80211_chan_def *chandef,
57f255f5 2605 u16 prot_mode, bool rifs_mode)
42e7aa77 2606{
074d46d1 2607 struct ieee80211_ht_operation *ht_oper;
42e7aa77 2608 /* Build HT Information */
074d46d1
JB		 2609 *pos++ = WLAN_EID_HT_OPERATION;
2610 *pos++ = sizeof(struct ieee80211_ht_operation);
2611 ht_oper = (struct ieee80211_ht_operation *)pos;
4bf88530
JB		 2612 ht_oper->primary_chan = ieee80211_frequency_to_channel(
2613 chandef->chan->center_freq);
2614 switch (chandef->width) {
2615 case NL80211_CHAN_WIDTH_160:
2616 case NL80211_CHAN_WIDTH_80P80:
2617 case NL80211_CHAN_WIDTH_80:
2618 case NL80211_CHAN_WIDTH_40:
2619 if (chandef->center_freq1 > chandef->chan->center_freq)
2620 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
2621 else
2622 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
42e7aa77 2623 break;
5dca295d
IP		 2624 case NL80211_CHAN_WIDTH_320:
2625 /* HT information element should not be included on 6GHz */
2626 WARN_ON(1);
2627 return pos;
42e7aa77 2628 default:
074d46d1 2629 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_NONE;
42e7aa77
AS		 2630 break;
2631 }
aee286c2 2632 if (ht_cap->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 &&
4bf88530
JB		 2633 chandef->width != NL80211_CHAN_WIDTH_20_NOHT &&
2634 chandef->width != NL80211_CHAN_WIDTH_20)
074d46d1 2635 ht_oper->ht_param |= IEEE80211_HT_PARAM_CHAN_WIDTH_ANY;
ff3cc5f4 2636
57f255f5
AN		 2637 if (rifs_mode)
2638 ht_oper->ht_param |= IEEE80211_HT_PARAM_RIFS_MODE;
2639
431e3154 2640 ht_oper->operation_mode = cpu_to_le16(prot_mode);
074d46d1 2641 ht_oper->stbc_param = 0x0000;
42e7aa77
AS		 2642
2643 /* It seems that Basic MCS set and Supported MCS set
2644 are identical for the first 10 bytes */
074d46d1
JB		 2645 memset(&ht_oper->basic_set, 0, 16);
2646 memcpy(&ht_oper->basic_set, &ht_cap->mcs, 10);
42e7aa77 2647
074d46d1 2648 return pos + sizeof(struct ieee80211_ht_operation);
42e7aa77
AS		 2649}
2650
75d627d5
SW		 2651void ieee80211_ie_build_wide_bw_cs(u8 *pos,
2652 const struct cfg80211_chan_def *chandef)
2653{
2654 *pos++ = WLAN_EID_WIDE_BW_CHANNEL_SWITCH; /* EID */
2655 *pos++ = 3; /* IE length */
2656 /* New channel width */
2657 switch (chandef->width) {
2658 case NL80211_CHAN_WIDTH_80:
2659 *pos++ = IEEE80211_VHT_CHANWIDTH_80MHZ;
2660 break;
2661 case NL80211_CHAN_WIDTH_160:
2662 *pos++ = IEEE80211_VHT_CHANWIDTH_160MHZ;
2663 break;
2664 case NL80211_CHAN_WIDTH_80P80:
2665 *pos++ = IEEE80211_VHT_CHANWIDTH_80P80MHZ;
2666 break;
5dca295d
IP		 2667 case NL80211_CHAN_WIDTH_320:
2668 /* The behavior is not defined for 320 MHz channels */
2669 WARN_ON(1);
2670 fallthrough;
75d627d5
SW		 2671 default:
2672 *pos++ = IEEE80211_VHT_CHANWIDTH_USE_HT;
2673 }
2674
2675 /* new center frequency segment 0 */
2676 *pos++ = ieee80211_frequency_to_channel(chandef->center_freq1);
2677 /* new center frequency segment 1 */
2678 if (chandef->center_freq2)
2679 *pos++ = ieee80211_frequency_to_channel(chandef->center_freq2);
2680 else
2681 *pos++ = 0;
2682}
2683
fb28ec0c
AN		 2684u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
2685 const struct cfg80211_chan_def *chandef)
2686{
2687 struct ieee80211_vht_operation *vht_oper;
2688
2689 *pos++ = WLAN_EID_VHT_OPERATION;
2690 *pos++ = sizeof(struct ieee80211_vht_operation);
2691 vht_oper = (struct ieee80211_vht_operation *)pos;
2fb51c35 2692 vht_oper->center_freq_seg0_idx = ieee80211_frequency_to_channel(
fb28ec0c
AN		 2693 chandef->center_freq1);
2694 if (chandef->center_freq2)
2fb51c35 2695 vht_oper->center_freq_seg1_idx =
fb28ec0c 2696 ieee80211_frequency_to_channel(chandef->center_freq2);
f020ae40 2697 else
2fb51c35 2698 vht_oper->center_freq_seg1_idx = 0x00;
fb28ec0c
AN		 2699
2700 switch (chandef->width) {
2701 case NL80211_CHAN_WIDTH_160:
23665aaf
JM		 2702 /*
2703 * Convert 160 MHz channel width to new style as interop
2704 * workaround.
2705 */
2706 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ;
2fb51c35 2707 vht_oper->center_freq_seg1_idx = vht_oper->center_freq_seg0_idx;
23665aaf 2708 if (chandef->chan->center_freq < chandef->center_freq1)
2fb51c35 2709 vht_oper->center_freq_seg0_idx -= 8;
23665aaf 2710 else
2fb51c35 2711 vht_oper->center_freq_seg0_idx += 8;
fb28ec0c
AN		 2712 break;
2713 case NL80211_CHAN_WIDTH_80P80:
23665aaf
JM		 2714 /*
2715 * Convert 80+80 MHz channel width to new style as interop
2716 * workaround.
2717 */
2718 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ;
fb28ec0c
AN		 2719 break;
2720 case NL80211_CHAN_WIDTH_80:
2721 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ;
2722 break;
5dca295d
IP		 2723 case NL80211_CHAN_WIDTH_320:
2724 /* VHT information element should not be included on 6GHz */
2725 WARN_ON(1);
2726 return pos;
fb28ec0c
AN		 2727 default:
2728 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_USE_HT;
2729 break;
2730 }
2731
2732 /* don't require special VHT peer rates */
2733 vht_oper->basic_mcs_set = cpu_to_le16(0xffff);
2734
2735 return pos + sizeof(struct ieee80211_vht_operation);
2736}
2737
d1b7524b 2738u8 *ieee80211_ie_build_he_oper(u8 *pos, struct cfg80211_chan_def *chandef)
60ad72da
SE		 2739{
2740 struct ieee80211_he_operation *he_oper;
d1b7524b 2741 struct ieee80211_he_6ghz_oper *he_6ghz_op;
60ad72da 2742 u32 he_oper_params;
d1b7524b
RM		 2743 u8 ie_len = 1 + sizeof(struct ieee80211_he_operation);
2744
2745 if (chandef->chan->band == NL80211_BAND_6GHZ)
2746 ie_len += sizeof(struct ieee80211_he_6ghz_oper);
60ad72da
SE		 2747
2748 *pos++ = WLAN_EID_EXTENSION;
d1b7524b 2749 *pos++ = ie_len;
60ad72da
SE		 2750 *pos++ = WLAN_EID_EXT_HE_OPERATION;
2751
2752 he_oper_params = 0;
2753 he_oper_params |= u32_encode_bits(1023, /* disabled */
2754 IEEE80211_HE_OPERATION_RTS_THRESHOLD_MASK);
2755 he_oper_params |= u32_encode_bits(1,
2756 IEEE80211_HE_OPERATION_ER_SU_DISABLE);
2757 he_oper_params |= u32_encode_bits(1,
2758 IEEE80211_HE_OPERATION_BSS_COLOR_DISABLED);
d1b7524b
RM		 2759 if (chandef->chan->band == NL80211_BAND_6GHZ)
2760 he_oper_params |= u32_encode_bits(1,
2761 IEEE80211_HE_OPERATION_6GHZ_OP_INFO);
60ad72da
SE		 2762
2763 he_oper = (struct ieee80211_he_operation *)pos;
2764 he_oper->he_oper_params = cpu_to_le32(he_oper_params);
2765
2766 /* don't require special HE peer rates */
2767 he_oper->he_mcs_nss_set = cpu_to_le16(0xffff);
d1b7524b 2768 pos += sizeof(struct ieee80211_he_operation);
60ad72da 2769
d1b7524b
RM		 2770 if (chandef->chan->band != NL80211_BAND_6GHZ)
2771 goto out;
60ad72da 2772
d1b7524b
RM		 2773 /* TODO add VHT operational */
2774 he_6ghz_op = (struct ieee80211_he_6ghz_oper *)pos;
2775 he_6ghz_op->minrate = 6; /* 6 Mbps */
2776 he_6ghz_op->primary =
2777 ieee80211_frequency_to_channel(chandef->chan->center_freq);
2778 he_6ghz_op->ccfs0 =
2779 ieee80211_frequency_to_channel(chandef->center_freq1);
2780 if (chandef->center_freq2)
2781 he_6ghz_op->ccfs1 =
2782 ieee80211_frequency_to_channel(chandef->center_freq2);
2783 else
2784 he_6ghz_op->ccfs1 = 0;
2785
2786 switch (chandef->width) {
5dca295d
IP		 2787 case NL80211_CHAN_WIDTH_320:
2788 /*
2789 * TODO: mesh operation is not defined over 6GHz 320 MHz
2790 * channels.
2791 */
2792 WARN_ON(1);
2793 break;
d1b7524b
RM		 2794 case NL80211_CHAN_WIDTH_160:
2795 /* Convert 160 MHz channel width to new style as interop
2796 * workaround.
2797 */
2798 he_6ghz_op->control =
2799 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_160MHZ;
2800 he_6ghz_op->ccfs1 = he_6ghz_op->ccfs0;
2801 if (chandef->chan->center_freq < chandef->center_freq1)
2802 he_6ghz_op->ccfs0 -= 8;
2803 else
2804 he_6ghz_op->ccfs0 += 8;
2805 fallthrough;
2806 case NL80211_CHAN_WIDTH_80P80:
2807 he_6ghz_op->control =
2808 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_160MHZ;
2809 break;
2810 case NL80211_CHAN_WIDTH_80:
2811 he_6ghz_op->control =
2812 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_80MHZ;
2813 break;
2814 case NL80211_CHAN_WIDTH_40:
2815 he_6ghz_op->control =
2816 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_40MHZ;
2817 break;
2818 default:
2819 he_6ghz_op->control =
2820 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_20MHZ;
2821 break;
2822 }
2823
2824 pos += sizeof(struct ieee80211_he_6ghz_oper);
2825
2826out:
2827 return pos;
60ad72da
SE		 2828}
2829
df1875c4
RL		 2830u8 *ieee80211_ie_build_eht_oper(u8 *pos, struct cfg80211_chan_def *chandef,
2831 const struct ieee80211_sta_eht_cap *eht_cap)
2832
2833{
2834 const struct ieee80211_eht_mcs_nss_supp_20mhz_only *eht_mcs_nss =
2835 &eht_cap->eht_mcs_nss_supp.only_20mhz;
2836 struct ieee80211_eht_operation *eht_oper;
2837 struct ieee80211_eht_operation_info *eht_oper_info;
2838 u8 eht_oper_len = offsetof(struct ieee80211_eht_operation, optional);
2839 u8 eht_oper_info_len =
2840 offsetof(struct ieee80211_eht_operation_info, optional);
2841 u8 chan_width = 0;
2842
2843 *pos++ = WLAN_EID_EXTENSION;
2844 *pos++ = 1 + eht_oper_len + eht_oper_info_len;
2845 *pos++ = WLAN_EID_EXT_EHT_OPERATION;
2846
2847 eht_oper = (struct ieee80211_eht_operation *)pos;
2848
2849 memcpy(&eht_oper->basic_mcs_nss, eht_mcs_nss, sizeof(*eht_mcs_nss));
2850 eht_oper->params |= IEEE80211_EHT_OPER_INFO_PRESENT;
2851 pos += eht_oper_len;
2852
2853 eht_oper_info =
2854 (struct ieee80211_eht_operation_info *)eht_oper->optional;
2855
2856 eht_oper_info->ccfs0 =
2857 ieee80211_frequency_to_channel(chandef->center_freq1);
2858 if (chandef->center_freq2)
2859 eht_oper_info->ccfs1 =
2860 ieee80211_frequency_to_channel(chandef->center_freq2);
2861 else
2862 eht_oper_info->ccfs1 = 0;
2863
2864 switch (chandef->width) {
2865 case NL80211_CHAN_WIDTH_320:
2866 chan_width = IEEE80211_EHT_OPER_CHAN_WIDTH_320MHZ;
2867 eht_oper_info->ccfs1 = eht_oper_info->ccfs0;
2868 if (chandef->chan->center_freq < chandef->center_freq1)
2869 eht_oper_info->ccfs0 -= 16;
2870 else
2871 eht_oper_info->ccfs0 += 16;
2872 break;
2873 case NL80211_CHAN_WIDTH_160:
2874 eht_oper_info->ccfs1 = eht_oper_info->ccfs0;
2875 if (chandef->chan->center_freq < chandef->center_freq1)
2876 eht_oper_info->ccfs0 -= 8;
2877 else
2878 eht_oper_info->ccfs0 += 8;
2879 fallthrough;
2880 case NL80211_CHAN_WIDTH_80P80:
2881 chan_width = IEEE80211_EHT_OPER_CHAN_WIDTH_160MHZ;
2882 break;
2883 case NL80211_CHAN_WIDTH_80:
2884 chan_width = IEEE80211_EHT_OPER_CHAN_WIDTH_80MHZ;
2885 break;
2886 case NL80211_CHAN_WIDTH_40:
2887 chan_width = IEEE80211_EHT_OPER_CHAN_WIDTH_40MHZ;
2888 break;
2889 default:
2890 chan_width = IEEE80211_EHT_OPER_CHAN_WIDTH_20MHZ;
2891 break;
2892 }
2893 eht_oper_info->control = chan_width;
2894 pos += eht_oper_info_len;
2895
2896 /* TODO: eht_oper_info->optional */
2897
2898 return pos;
2899}
2900
8ac3c704
JB		 2901bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper,
2902 struct cfg80211_chan_def *chandef)
42e7aa77
AS		 2903{
2904 enum nl80211_channel_type channel_type;
2905
8ac3c704
JB		 2906 if (!ht_oper)
2907 return false;
42e7aa77 2908
074d46d1 2909 switch (ht_oper->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) {
42e7aa77
AS		 2910 case IEEE80211_HT_PARAM_CHA_SEC_NONE:
2911 channel_type = NL80211_CHAN_HT20;
2912 break;
2913 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
2914 channel_type = NL80211_CHAN_HT40PLUS;
2915 break;
2916 case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
2917 channel_type = NL80211_CHAN_HT40MINUS;
2918 break;
2919 default:
8ac3c704 2920 return false;
42e7aa77
AS		 2921 }
2922
8ac3c704
JB		 2923 cfg80211_chandef_create(chandef, chandef->chan, channel_type);
2924 return true;
42e7aa77
AS		 2925}
2926
2a333a0d 2927bool ieee80211_chandef_vht_oper(struct ieee80211_hw *hw, u32 vht_cap_info,
7eb26df2
JB		 2928 const struct ieee80211_vht_operation *oper,
2929 const struct ieee80211_ht_operation *htop,
8ac3c704 2930 struct cfg80211_chan_def *chandef)
abcff6ef 2931{
8ac3c704 2932 struct cfg80211_chan_def new = *chandef;
7eb26df2
JB		 2933 int cf0, cf1;
2934 int ccfs0, ccfs1, ccfs2;
2935 int ccf0, ccf1;
33181ea7
SB		 2936 u32 vht_cap;
2937 bool support_80_80 = false;
2938 bool support_160 = false;
2a333a0d
JB		 2939 u8 ext_nss_bw_supp = u32_get_bits(vht_cap_info,
2940 IEEE80211_VHT_CAP_EXT_NSS_BW_MASK);
2941 u8 supp_chwidth = u32_get_bits(vht_cap_info,
2942 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK);
8ac3c704 2943
7eb26df2 2944 if (!oper || !htop)
8ac3c704 2945 return false;
abcff6ef 2946
33181ea7
SB		 2947 vht_cap = hw->wiphy->bands[chandef->chan->band]->vht_cap.cap;
2948 support_160 = (vht_cap & (IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK |
2949 IEEE80211_VHT_CAP_EXT_NSS_BW_MASK));
2950 support_80_80 = ((vht_cap &
2951 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ) ||
2952 (vht_cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ &&
2953 vht_cap & IEEE80211_VHT_CAP_EXT_NSS_BW_MASK) ||
2954 ((vht_cap & IEEE80211_VHT_CAP_EXT_NSS_BW_MASK) >>
2955 IEEE80211_VHT_CAP_EXT_NSS_BW_SHIFT > 1));
7eb26df2
JB		 2956 ccfs0 = oper->center_freq_seg0_idx;
2957 ccfs1 = oper->center_freq_seg1_idx;
2958 ccfs2 = (le16_to_cpu(htop->operation_mode) &
2959 IEEE80211_HT_OP_MODE_CCFS2_MASK)
2960 >> IEEE80211_HT_OP_MODE_CCFS2_SHIFT;
2961
7eb26df2 2962 ccf0 = ccfs0;
2a333a0d
JB		 2963
2964 /* if not supported, parse as though we didn't understand it */
2965 if (!ieee80211_hw_check(hw, SUPPORTS_VHT_EXT_NSS_BW))
2966 ext_nss_bw_supp = 0;
2967
2968 /*
2969 * Cf. IEEE 802.11 Table 9-250
2970 *
2971 * We really just consider that because it's inefficient to connect
2972 * at a higher bandwidth than we'll actually be able to use.
2973 */
2974 switch ((supp_chwidth << 4) | ext_nss_bw_supp) {
2975 default:
2976 case 0x00:
2977 ccf1 = 0;
2978 support_160 = false;
2979 support_80_80 = false;
2980 break;
2981 case 0x01:
2982 support_80_80 = false;
fc0561dc 2983 fallthrough;
2a333a0d
JB		 2984 case 0x02:
2985 case 0x03:
7eb26df2 2986 ccf1 = ccfs2;
2a333a0d
JB		 2987 break;
2988 case 0x10:
2989 ccf1 = ccfs1;
2990 break;
2991 case 0x11:
2992 case 0x12:
2993 if (!ccfs1)
2994 ccf1 = ccfs2;
2995 else
2996 ccf1 = ccfs1;
2997 break;
2998 case 0x13:
2999 case 0x20:
3000 case 0x23:
3001 ccf1 = ccfs1;
3002 break;
3003 }
7eb26df2
JB		 3004
3005 cf0 = ieee80211_channel_to_frequency(ccf0, chandef->chan->band);
3006 cf1 = ieee80211_channel_to_frequency(ccf1, chandef->chan->band);
abcff6ef
JD		 3007
3008 switch (oper->chan_width) {
3009 case IEEE80211_VHT_CHANWIDTH_USE_HT:
7eb26df2 3010 /* just use HT information directly */
abcff6ef
JD		 3011 break;
3012 case IEEE80211_VHT_CHANWIDTH_80MHZ:
8ac3c704 3013 new.width = NL80211_CHAN_WIDTH_80;
7eb26df2 3014 new.center_freq1 = cf0;
23665aaf 3015 /* If needed, adjust based on the newer interop workaround. */
7eb26df2 3016 if (ccf1) {
23665aaf
JM		 3017 unsigned int diff;
3018
7eb26df2 3019 diff = abs(ccf1 - ccf0);
33181ea7 3020 if ((diff == 8) && support_160) {
23665aaf 3021 new.width = NL80211_CHAN_WIDTH_160;
7eb26df2 3022 new.center_freq1 = cf1;
33181ea7 3023 } else if ((diff > 8) && support_80_80) {
23665aaf 3024 new.width = NL80211_CHAN_WIDTH_80P80;
7eb26df2 3025 new.center_freq2 = cf1;
23665aaf
JM		 3026 }
3027 }
abcff6ef
JD		 3028 break;
3029 case IEEE80211_VHT_CHANWIDTH_160MHZ:
7eb26df2 3030 /* deprecated encoding */
8ac3c704 3031 new.width = NL80211_CHAN_WIDTH_160;
7eb26df2 3032 new.center_freq1 = cf0;
abcff6ef
JD		 3033 break;
3034 case IEEE80211_VHT_CHANWIDTH_80P80MHZ:
7eb26df2 3035 /* deprecated encoding */
8ac3c704 3036 new.width = NL80211_CHAN_WIDTH_80P80;
7eb26df2
JB		 3037 new.center_freq1 = cf0;
3038 new.center_freq2 = cf1;
abcff6ef
JD		 3039 break;
3040 default:
8ac3c704 3041 return false;
abcff6ef
JD		 3042 }
3043
8ac3c704
JB		 3044 if (!cfg80211_chandef_valid(&new))
3045 return false;
3046
3047 *chandef = new;
3048 return true;
abcff6ef
JD		 3049}
3050
b3239498 3051void ieee80211_chandef_eht_oper(const struct ieee80211_eht_operation_info *info,
1e0b3b0b
IP		 3052 struct cfg80211_chan_def *chandef)
3053{
1e0b3b0b
IP		 3054 chandef->center_freq1 =
3055 ieee80211_channel_to_frequency(info->ccfs0,
3056 chandef->chan->band);
3057
3058 switch (u8_get_bits(info->control,
3059 IEEE80211_EHT_OPER_CHAN_WIDTH)) {
3060 case IEEE80211_EHT_OPER_CHAN_WIDTH_20MHZ:
3061 chandef->width = NL80211_CHAN_WIDTH_20;
3062 break;
3063 case IEEE80211_EHT_OPER_CHAN_WIDTH_40MHZ:
3064 chandef->width = NL80211_CHAN_WIDTH_40;
3065 break;
3066 case IEEE80211_EHT_OPER_CHAN_WIDTH_80MHZ:
3067 chandef->width = NL80211_CHAN_WIDTH_80;
3068 break;
3069 case IEEE80211_EHT_OPER_CHAN_WIDTH_160MHZ:
2d9698dd
JB		 3070 chandef->width = NL80211_CHAN_WIDTH_160;
3071 chandef->center_freq1 =
3072 ieee80211_channel_to_frequency(info->ccfs1,
3073 chandef->chan->band);
1e0b3b0b
IP		 3074 break;
3075 case IEEE80211_EHT_OPER_CHAN_WIDTH_320MHZ:
2d9698dd
JB		 3076 chandef->width = NL80211_CHAN_WIDTH_320;
3077 chandef->center_freq1 =
3078 ieee80211_channel_to_frequency(info->ccfs1,
3079 chandef->chan->band);
1e0b3b0b
IP		 3080 break;
3081 }
3082}
3083
2d9698dd 3084bool ieee80211_chandef_he_6ghz_oper(struct ieee80211_local *local,
57fa5e85 3085 const struct ieee80211_he_operation *he_oper,
5dca295d 3086 const struct ieee80211_eht_operation *eht_oper,
57fa5e85
JB		 3087 struct cfg80211_chan_def *chandef)
3088{
57fa5e85
JB		 3089 struct cfg80211_chan_def he_chandef = *chandef;
3090 const struct ieee80211_he_6ghz_oper *he_6ghz_oper;
57fa5e85
JB		 3091 u32 freq;
3092
3093 if (chandef->chan->band != NL80211_BAND_6GHZ)
3094 return true;
3095
2d9698dd 3096 if (!he_oper)
57fa5e85 3097 return false;
5dca295d 3098
57fa5e85 3099 he_6ghz_oper = ieee80211_he_6ghz_oper(he_oper);
bc8a0fac 3100 if (!he_6ghz_oper)
57fa5e85 3101 return false;
57fa5e85 3102
5dca295d
IP		 3103 /*
3104 * The EHT operation IE does not contain the primary channel so the
3105 * primary channel frequency should be taken from the 6 GHz operation
3106 * information.
3107 */
57fa5e85
JB		 3108 freq = ieee80211_channel_to_frequency(he_6ghz_oper->primary,
3109 NL80211_BAND_6GHZ);
2d9698dd
JB		 3110 he_chandef.chan = ieee80211_get_channel(local->hw.wiphy, freq);
3111
3112 if (!he_chandef.chan)
3113 return false;
57fa5e85 3114
1e0b3b0b
IP		 3115 if (!eht_oper ||
3116 !(eht_oper->params & IEEE80211_EHT_OPER_INFO_PRESENT)) {
5dca295d
IP		 3117 switch (u8_get_bits(he_6ghz_oper->control,
3118 IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH)) {
3119 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_20MHZ:
3120 he_chandef.width = NL80211_CHAN_WIDTH_20;
3121 break;
3122 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_40MHZ:
3123 he_chandef.width = NL80211_CHAN_WIDTH_40;
3124 break;
3125 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_80MHZ:
3126 he_chandef.width = NL80211_CHAN_WIDTH_80;
3127 break;
3128 case IEEE80211_HE_6GHZ_OPER_CTRL_CHANWIDTH_160MHZ:
3129 he_chandef.width = NL80211_CHAN_WIDTH_80;
3130 if (!he_6ghz_oper->ccfs1)
3131 break;
2d9698dd
JB		 3132 if (abs(he_6ghz_oper->ccfs1 - he_6ghz_oper->ccfs0) == 8)
3133 he_chandef.width = NL80211_CHAN_WIDTH_160;
3134 else
3135 he_chandef.width = NL80211_CHAN_WIDTH_80P80;
5dca295d
IP		 3136 break;
3137 }
3138
3139 if (he_chandef.width == NL80211_CHAN_WIDTH_160) {
3140 he_chandef.center_freq1 =
3141 ieee80211_channel_to_frequency(he_6ghz_oper->ccfs1,
3142 NL80211_BAND_6GHZ);
3143 } else {
3144 he_chandef.center_freq1 =
3145 ieee80211_channel_to_frequency(he_6ghz_oper->ccfs0,
3146 NL80211_BAND_6GHZ);
2d9698dd
JB		 3147 he_chandef.center_freq2 =
3148 ieee80211_channel_to_frequency(he_6ghz_oper->ccfs1,
3149 NL80211_BAND_6GHZ);
5dca295d
IP		 3150 }
3151 } else {
b3239498 3152 ieee80211_chandef_eht_oper((const void *)eht_oper->optional,
b3239498 3153 &he_chandef);
b919099e
KY		 3154 he_chandef.punctured =
3155 ieee80211_eht_oper_dis_subchan_bitmap(eht_oper);
57fa5e85
JB		 3156 }
3157
2d9698dd 3158 if (!cfg80211_chandef_valid(&he_chandef))
57fa5e85 3159 return false;
57fa5e85
JB		 3160
3161 *chandef = he_chandef;
3162
8fca2b87 3163 return true;
1d00ce80
TP		 3164}
3165
3166bool ieee80211_chandef_s1g_oper(const struct ieee80211_s1g_oper_ie *oper,
3167 struct cfg80211_chan_def *chandef)
3168{
3169 u32 oper_freq;
3170
3171 if (!oper)
3172 return false;
3173
3174 switch (FIELD_GET(S1G_OPER_CH_WIDTH_OPER, oper->ch_width)) {
3175 case IEEE80211_S1G_CHANWIDTH_1MHZ:
3176 chandef->width = NL80211_CHAN_WIDTH_1;
3177 break;
3178 case IEEE80211_S1G_CHANWIDTH_2MHZ:
3179 chandef->width = NL80211_CHAN_WIDTH_2;
3180 break;
3181 case IEEE80211_S1G_CHANWIDTH_4MHZ:
3182 chandef->width = NL80211_CHAN_WIDTH_4;
3183 break;
3184 case IEEE80211_S1G_CHANWIDTH_8MHZ:
3185 chandef->width = NL80211_CHAN_WIDTH_8;
3186 break;
3187 case IEEE80211_S1G_CHANWIDTH_16MHZ:
3188 chandef->width = NL80211_CHAN_WIDTH_16;
3189 break;
3190 default:
3191 return false;
3192 }
3193
3194 oper_freq = ieee80211_channel_to_freq_khz(oper->oper_ch,
3195 NL80211_BAND_S1GHZ);
3196 chandef->center_freq1 = KHZ_TO_MHZ(oper_freq);
3197 chandef->freq1_offset = oper_freq % 1000;
3198
57fa5e85
JB		 3199 return true;
3200}
3201
147ceae2
JB		 3202int ieee80211_put_srates_elem(struct sk_buff *skb,
3203 const struct ieee80211_supported_band *sband,
3204 u32 basic_rates, u32 rate_flags, u32 masked_rates,
3205 u8 element_id)
768db343 3206{
147ceae2 3207 u8 i, rates, skip;
768db343 3208
2103dec1
SW		 3209 rates = 0;
3210 for (i = 0; i < sband->n_bitrates; i++) {
3211 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
3212 continue;
147ceae2
JB		 3213 if (masked_rates & BIT(i))
3214 continue;
2103dec1
SW		 3215 rates++;
3216 }
768db343 3217
147ceae2
JB		 3218 if (element_id == WLAN_EID_SUPP_RATES) {
3219 rates = min_t(u8, rates, 8);
3220 skip = 0;
3221 } else {
3222 skip = 8;
3223 if (rates <= skip)
3224 return 0;
3225 rates -= skip;
768db343
AN		 3226 }
3227
147ceae2
JB		 3228 if (skb_tailroom(skb) < rates + 2)
3229 return -ENOBUFS;
768db343 3230
147ceae2
JB		 3231 skb_put_u8(skb, element_id);
3232 skb_put_u8(skb, rates);
3233
3234 for (i = 0; i < sband->n_bitrates && rates; i++) {
3235 int rate;
3236 u8 basic;
2103dec1 3237
2103dec1
SW		 3238 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
3239 continue;
147ceae2
JB		 3240 if (masked_rates & BIT(i))
3241 continue;
2103dec1 3242
147ceae2
JB		 3243 if (skip > 0) {
3244 skip--;
3245 continue;
3246 }
768db343 3247
147ceae2 3248 basic = basic_rates & BIT(i) ? 0x80 : 0;
768db343 3249
147ceae2
JB		 3250 rate = DIV_ROUND_UP(sband->bitrates[i].bitrate, 5);
3251 skb_put_u8(skb, basic | (u8)rate);
3252 rates--;
768db343 3253 }
147ceae2
JB		 3254
3255 WARN(rates > 0, "rates confused: rates:%d, element:%d\n",
3256 rates, element_id);
3257
768db343
AN		 3258 return 0;
3259}
1dae27f8
WYG		 3260
3261int ieee80211_ave_rssi(struct ieee80211_vif *vif)
3262{
3263 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
1dae27f8 3264
bfd8403a 3265 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION))
be6bcabc 3266 return 0;
bfd8403a
JB		 3267
3268 return -ewma_beacon_signal_read(&sdata->deflink.u.mgd.ave_beacon_signal);
1dae27f8 3269}
0d8a0a17 3270EXPORT_SYMBOL_GPL(ieee80211_ave_rssi);
04ecd257
JB		 3271
3272u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs)
3273{
3274 if (!mcs)
3275 return 1;
3276
3277 /* TODO: consider rx_highest */
3278
3279 if (mcs->rx_mask[3])
3280 return 4;
3281 if (mcs->rx_mask[2])
3282 return 3;
3283 if (mcs->rx_mask[1])
3284 return 2;
3285 return 1;
3286}
f4bda337
TP		 3287
3288/**
3289 * ieee80211_calculate_rx_timestamp - calculate timestamp in frame
3290 * @local: mac80211 hw info struct
3291 * @status: RX status
3292 * @mpdu_len: total MPDU length (including FCS)
3293 * @mpdu_offset: offset into MPDU to calculate timestamp at
3294 *
3295 * This function calculates the RX timestamp at the given MPDU offset, taking
3296 * into account what the RX timestamp was. An offset of 0 will just normalize
3297 * the timestamp to TSF at beginning of MPDU reception.
cef71047
JB		 3298 *
3299 * Returns: the calculated timestamp
f4bda337
TP		 3300 */
3301u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
3302 struct ieee80211_rx_status *status,
3303 unsigned int mpdu_len,
3304 unsigned int mpdu_offset)
3305{
3306 u64 ts = status->mactime;
d5b6f6d5 3307 bool mactime_plcp_start;
f4bda337
TP		 3308 struct rate_info ri;
3309 u16 rate;
da388233 3310 u8 n_ltf;
f4bda337
TP		 3311
3312 if (WARN_ON(!ieee80211_have_rx_timestamp(status)))
3313 return 0;
3314
d5b6f6d5
JB		 3315 mactime_plcp_start = (status->flag & RX_FLAG_MACTIME) ==
3316 RX_FLAG_MACTIME_PLCP_START;
3317
f4bda337
TP		 3318 memset(&ri, 0, sizeof(ri));
3319
35f4962c
JB		 3320 ri.bw = status->bw;
3321
f4bda337 3322 /* Fill cfg80211 rate info */
da6a4352 3323 switch (status->encoding) {
f66c48af
JB		 3324 case RX_ENC_EHT:
3325 ri.flags |= RATE_INFO_FLAGS_EHT_MCS;
3326 ri.mcs = status->rate_idx;
3327 ri.nss = status->nss;
3328 ri.eht_ru_alloc = status->eht.ru;
3329 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI)
3330 ri.flags |= RATE_INFO_FLAGS_SHORT_GI;
3331 /* TODO/FIXME: is this right? handle other PPDUs */
d5b6f6d5 3332 if (mactime_plcp_start) {
f66c48af
JB		 3333 mpdu_offset += 2;
3334 ts += 36;
3335 }
3336 break;
da388233
AS		 3337 case RX_ENC_HE:
3338 ri.flags |= RATE_INFO_FLAGS_HE_MCS;
3339 ri.mcs = status->rate_idx;
3340 ri.nss = status->nss;
3341 ri.he_ru_alloc = status->he_ru;
3342 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI)
3343 ri.flags |= RATE_INFO_FLAGS_SHORT_GI;
3344
3345 /*
3346 * See P802.11ax_D6.0, section 27.3.4 for
3347 * VHT PPDU format.
3348 */
d5b6f6d5 3349 if (mactime_plcp_start) {
da388233
AS		 3350 mpdu_offset += 2;
3351 ts += 36;
3352
3353 /*
3354 * TODO:
3355 * For HE MU PPDU, add the HE-SIG-B.
3356 * For HE ER PPDU, add 8us for the HE-SIG-A.
3357 * For HE TB PPDU, add 4us for the HE-STF.
3358 * Add the HE-LTF durations - variable.
3359 */
3360 }
3361
3362 break;
da6a4352 3363 case RX_ENC_HT:
f4bda337
TP		 3364 ri.mcs = status->rate_idx;
3365 ri.flags |= RATE_INFO_FLAGS_MCS;
7fdd69c5 3366 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI)
f4bda337 3367 ri.flags |= RATE_INFO_FLAGS_SHORT_GI;
da388233
AS		 3368
3369 /*
3370 * See P802.11REVmd_D3.0, section 19.3.2 for
3371 * HT PPDU format.
3372 */
d5b6f6d5 3373 if (mactime_plcp_start) {
da388233
AS		 3374 mpdu_offset += 2;
3375 if (status->enc_flags & RX_ENC_FLAG_HT_GF)
3376 ts += 24;
3377 else
3378 ts += 32;
3379
3380 /*
3381 * Add Data HT-LTFs per streams
3382 * TODO: add Extension HT-LTFs, 4us per LTF
3383 */
3384 n_ltf = ((ri.mcs >> 3) & 3) + 1;
3385 n_ltf = n_ltf == 3 ? 4 : n_ltf;
3386 ts += n_ltf * 4;
3387 }
3388
da6a4352
JB		 3389 break;
3390 case RX_ENC_VHT:
5614618e
JB		 3391 ri.flags |= RATE_INFO_FLAGS_VHT_MCS;
3392 ri.mcs = status->rate_idx;
8613c948 3393 ri.nss = status->nss;
7fdd69c5 3394 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI)
5614618e 3395 ri.flags |= RATE_INFO_FLAGS_SHORT_GI;
da388233
AS		 3396
3397 /*
3398 * See P802.11REVmd_D3.0, section 21.3.2 for
3399 * VHT PPDU format.
3400 */
d5b6f6d5 3401 if (mactime_plcp_start) {
da388233
AS		 3402 mpdu_offset += 2;
3403 ts += 36;
3404
3405 /*
3406 * Add VHT-LTFs per streams
3407 */
3408 n_ltf = (ri.nss != 1) && (ri.nss % 2) ?
3409 ri.nss + 1 : ri.nss;
3410 ts += 4 * n_ltf;
3411 }
3412
da6a4352
JB		 3413 break;
3414 default:
3415 WARN_ON(1);
fc0561dc 3416 fallthrough;
da6a4352 3417 case RX_ENC_LEGACY: {
f4bda337
TP		 3418 struct ieee80211_supported_band *sband;
3419
3420 sband = local->hw.wiphy->bands[status->band];
2400dfe2 3421 ri.legacy = sband->bitrates[status->rate_idx].bitrate;
f4a0f0c5 3422
d5b6f6d5 3423 if (mactime_plcp_start) {
57fbcce3 3424 if (status->band == NL80211_BAND_5GHZ) {
2400dfe2 3425 ts += 20;
f4a0f0c5 3426 mpdu_offset += 2;
7fdd69c5 3427 } else if (status->enc_flags & RX_ENC_FLAG_SHORTPRE) {
f4a0f0c5
JB		 3428 ts += 96;
3429 } else {
3430 ts += 192;
3431 }
3432 }
da6a4352
JB		 3433 break;
3434 }
f4bda337
TP		 3435 }
3436
3437 rate = cfg80211_calculate_bitrate(&ri);
d86aa4f8 3438 if (WARN_ONCE(!rate,
f980ebc0
SS		 3439 "Invalid bitrate: flags=0x%llx, idx=%d, vht_nss=%d\n",
3440 (unsigned long long)status->flag, status->rate_idx,
8613c948 3441 status->nss))
d86aa4f8 3442 return 0;
f4bda337
TP		 3443
3444 /* rewind from end of MPDU */
d5b6f6d5 3445 if ((status->flag & RX_FLAG_MACTIME) == RX_FLAG_MACTIME_END)
f4bda337
TP		 3446 ts -= mpdu_len * 8 * 10 / rate;
3447
3448 ts += mpdu_offset * 8 * 10 / rate;
3449
3450 return ts;
3451}
164eb02d
SW		 3452
3453void ieee80211_dfs_cac_cancel(struct ieee80211_local *local)
3454{
3455 struct ieee80211_sub_if_data *sdata;
d2859df5 3456 struct cfg80211_chan_def chandef;
164eb02d 3457
a05829a7 3458 lockdep_assert_wiphy(local->hw.wiphy);
4a199068 3459
164eb02d 3460 list_for_each_entry(sdata, &local->interfaces, list) {
34a3740d
JB		 3461 /* it might be waiting for the local->mtx, but then
3462 * by the time it gets it, sdata->wdev.cac_started
3463 * will no longer be true
3464 */
766d2601
JB		 3465 wiphy_delayed_work_cancel(local->hw.wiphy,
3466 &sdata->deflink.dfs_cac_timer_work);
164eb02d
SW		 3467
3468 if (sdata->wdev.cac_started) {
6092077a 3469 chandef = sdata->vif.bss_conf.chanreq.oper;
d8675a63 3470 ieee80211_link_release_channel(&sdata->deflink);
164eb02d 3471 cfg80211_cac_event(sdata->dev,
d2859df5 3472 &chandef,
164eb02d
SW		 3473 NL80211_RADAR_CAC_ABORTED,
3474 GFP_KERNEL);
3475 }
3476 }
164eb02d
SW		 3477}
3478
228e4f93
JB		 3479void ieee80211_dfs_radar_detected_work(struct wiphy *wiphy,
3480 struct wiphy_work *work)
164eb02d
SW		 3481{
3482 struct ieee80211_local *local =
3483 container_of(work, struct ieee80211_local, radar_detected_work);
84a3d1c9 3484 struct cfg80211_chan_def chandef = local->hw.conf.chandef;
486cf4c0
MK		 3485 struct ieee80211_chanctx *ctx;
3486 int num_chanctx = 0;
3487
5435af6e 3488 lockdep_assert_wiphy(local->hw.wiphy);
0cd8080e 3489
486cf4c0
MK		 3490 list_for_each_entry(ctx, &local->chanctx_list, list) {
3491 if (ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER)
3492 continue;
3493
3494 num_chanctx++;
3495 chandef = ctx->conf.def;
3496 }
164eb02d
SW		 3497
3498 ieee80211_dfs_cac_cancel(local);
3499
486cf4c0
MK		 3500 if (num_chanctx > 1)
3501 /* XXX: multi-channel is not supported yet */
164eb02d 3502 WARN_ON(1);
84a3d1c9 3503 else
164eb02d 3504 cfg80211_radar_event(local->hw.wiphy, &chandef, GFP_KERNEL);
164eb02d
SW		 3505}
3506
3507void ieee80211_radar_detected(struct ieee80211_hw *hw)
3508{
3509 struct ieee80211_local *local = hw_to_local(hw);
3510
3511 trace_api_radar_detected(local);
3512
228e4f93 3513 wiphy_work_queue(hw->wiphy, &local->radar_detected_work);
164eb02d
SW		 3514}
3515EXPORT_SYMBOL(ieee80211_radar_detected);
e6b7cde4 3516
310c8387
JB		 3517void ieee80211_chandef_downgrade(struct cfg80211_chan_def *c,
3518 struct ieee80211_conn_settings *conn)
e6b7cde4 3519{
b82730bf 3520 enum nl80211_chan_width new_primary_width;
310c8387 3521 struct ieee80211_conn_settings _ignored = {};
e6b7cde4 3522
310c8387
JB		 3523 /* allow passing NULL if caller doesn't care */
3524 if (!conn)
3525 conn = &_ignored;
3526
b82730bf
JB		 3527again:
3528 /* no-HT indicates nothing to do */
3529 new_primary_width = NL80211_CHAN_WIDTH_20_NOHT;
3530
e6b7cde4 3531 switch (c->width) {
310c8387
JB		 3532 default:
3533 case NL80211_CHAN_WIDTH_20_NOHT:
3534 WARN_ON_ONCE(1);
3535 fallthrough;
e6b7cde4
SW		 3536 case NL80211_CHAN_WIDTH_20:
3537 c->width = NL80211_CHAN_WIDTH_20_NOHT;
310c8387
JB		 3538 conn->mode = IEEE80211_CONN_MODE_LEGACY;
3539 conn->bw_limit = IEEE80211_CONN_BW_LIMIT_20;
b82730bf 3540 c->punctured = 0;
e6b7cde4
SW		 3541 break;
3542 case NL80211_CHAN_WIDTH_40:
3543 c->width = NL80211_CHAN_WIDTH_20;
3544 c->center_freq1 = c->chan->center_freq;
310c8387
JB		 3545 if (conn->mode == IEEE80211_CONN_MODE_VHT)
3546 conn->mode = IEEE80211_CONN_MODE_HT;
3547 conn->bw_limit = IEEE80211_CONN_BW_LIMIT_20;
b82730bf 3548 c->punctured = 0;
e6b7cde4
SW		 3549 break;
3550 case NL80211_CHAN_WIDTH_80:
8616f27b 3551 new_primary_width = NL80211_CHAN_WIDTH_40;
310c8387
JB		 3552 if (conn->mode == IEEE80211_CONN_MODE_VHT)
3553 conn->mode = IEEE80211_CONN_MODE_HT;
3554 conn->bw_limit = IEEE80211_CONN_BW_LIMIT_40;
e6b7cde4
SW		 3555 break;
3556 case NL80211_CHAN_WIDTH_80P80:
3557 c->center_freq2 = 0;
3558 c->width = NL80211_CHAN_WIDTH_80;
310c8387 3559 conn->bw_limit = IEEE80211_CONN_BW_LIMIT_80;
e6b7cde4
SW		 3560 break;
3561 case NL80211_CHAN_WIDTH_160:
8616f27b 3562 new_primary_width = NL80211_CHAN_WIDTH_80;
310c8387 3563 conn->bw_limit = IEEE80211_CONN_BW_LIMIT_80;
e6b7cde4 3564 break;
5dca295d 3565 case NL80211_CHAN_WIDTH_320:
8616f27b 3566 new_primary_width = NL80211_CHAN_WIDTH_160;
310c8387 3567 conn->bw_limit = IEEE80211_CONN_BW_LIMIT_160;
e6b7cde4 3568 break;
df78a0c0
TP		 3569 case NL80211_CHAN_WIDTH_1:
3570 case NL80211_CHAN_WIDTH_2:
3571 case NL80211_CHAN_WIDTH_4:
3572 case NL80211_CHAN_WIDTH_8:
3573 case NL80211_CHAN_WIDTH_16:
310c8387
JB		 3574 WARN_ON_ONCE(1);
3575 /* keep c->width */
3576 conn->mode = IEEE80211_CONN_MODE_S1G;
3577 conn->bw_limit = IEEE80211_CONN_BW_LIMIT_20;
3578 break;
e6b7cde4
SW		 3579 case NL80211_CHAN_WIDTH_5:
3580 case NL80211_CHAN_WIDTH_10:
3581 WARN_ON_ONCE(1);
3582 /* keep c->width */
310c8387
JB		 3583 conn->mode = IEEE80211_CONN_MODE_LEGACY;
3584 conn->bw_limit = IEEE80211_CONN_BW_LIMIT_20;
e6b7cde4
SW		 3585 break;
3586 }
3587
8616f27b 3588 if (new_primary_width != NL80211_CHAN_WIDTH_20_NOHT) {
b82730bf
JB		 3589 c->center_freq1 = cfg80211_chandef_primary(c, new_primary_width,
3590 &c->punctured);
8616f27b
JB		 3591 c->width = new_primary_width;
3592 }
3593
b82730bf
JB		 3594 /*
3595 * With an 80 MHz channel, we might have the puncturing in the primary
3596 * 40 Mhz channel, but that's not valid when downgraded to 40 MHz width.
3597 * In that case, downgrade again.
3598 */
3599 if (!cfg80211_chandef_valid(c) && c->punctured)
3600 goto again;
3601
e6b7cde4 3602 WARN_ON_ONCE(!cfg80211_chandef_valid(c));
e6b7cde4 3603}
687da132
EG		 3604
3605/*
3606 * Returns true if smps_mode_new is strictly more restrictive than
3607 * smps_mode_old.
3608 */
3609bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old,
3610 enum ieee80211_smps_mode smps_mode_new)
3611{
3612 if (WARN_ON_ONCE(smps_mode_old == IEEE80211_SMPS_AUTOMATIC ||
3613 smps_mode_new == IEEE80211_SMPS_AUTOMATIC))
3614 return false;
3615
3616 switch (smps_mode_old) {
3617 case IEEE80211_SMPS_STATIC:
3618 return false;
3619 case IEEE80211_SMPS_DYNAMIC:
3620 return smps_mode_new == IEEE80211_SMPS_STATIC;
3621 case IEEE80211_SMPS_OFF:
3622 return smps_mode_new != IEEE80211_SMPS_OFF;
3623 default:
3624 WARN_ON(1);
3625 }
3626
3627 return false;
3628}
c6da674a
CYY		 3629
3630int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata,
3631 struct cfg80211_csa_settings *csa_settings)
3632{
3633 struct sk_buff *skb;
3634 struct ieee80211_mgmt *mgmt;
3635 struct ieee80211_local *local = sdata->local;
3636 int freq;
4c121fd6
JB		 3637 int hdr_len = offsetofend(struct ieee80211_mgmt,
3638 u.action.u.chan_switch);
c6da674a
CYY		 3639 u8 *pos;
3640
3641 if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
3642 sdata->vif.type != NL80211_IFTYPE_MESH_POINT)
3643 return -EOPNOTSUPP;
3644
3645 skb = dev_alloc_skb(local->tx_headroom + hdr_len +
3646 5 + /* channel switch announcement element */
3647 3 + /* secondary channel offset element */
75d627d5 3648 5 + /* wide bandwidth channel switch announcement */
c6da674a
CYY		 3649 8); /* mesh channel switch parameters element */
3650 if (!skb)
3651 return -ENOMEM;
3652
3653 skb_reserve(skb, local->tx_headroom);
b080db58 3654 mgmt = skb_put_zero(skb, hdr_len);
c6da674a
CYY		 3655 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
3656 IEEE80211_STYPE_ACTION);
3657
3658 eth_broadcast_addr(mgmt->da);
3659 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
3660 if (ieee80211_vif_is_mesh(&sdata->vif)) {
3661 memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN);
3662 } else {
3663 struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
3664 memcpy(mgmt->bssid, ifibss->bssid, ETH_ALEN);
3665 }
3666 mgmt->u.action.category = WLAN_CATEGORY_SPECTRUM_MGMT;
3667 mgmt->u.action.u.chan_switch.action_code = WLAN_ACTION_SPCT_CHL_SWITCH;
3668 pos = skb_put(skb, 5);
3669 *pos++ = WLAN_EID_CHANNEL_SWITCH; /* EID */
3670 *pos++ = 3; /* IE length */
3671 *pos++ = csa_settings->block_tx ? 1 : 0; /* CSA mode */
3672 freq = csa_settings->chandef.chan->center_freq;
3673 *pos++ = ieee80211_frequency_to_channel(freq); /* channel */
3674 *pos++ = csa_settings->count; /* count */
3675
3676 if (csa_settings->chandef.width == NL80211_CHAN_WIDTH_40) {
3677 enum nl80211_channel_type ch_type;
3678
3679 skb_put(skb, 3);
3680 *pos++ = WLAN_EID_SECONDARY_CHANNEL_OFFSET; /* EID */
3681 *pos++ = 1; /* IE length */
3682 ch_type = cfg80211_get_chandef_type(&csa_settings->chandef);
3683 if (ch_type == NL80211_CHAN_HT40PLUS)
3684 *pos++ = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
3685 else
3686 *pos++ = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
3687 }
3688
3689 if (ieee80211_vif_is_mesh(&sdata->vif)) {
3690 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
c6da674a
CYY		 3691
3692 skb_put(skb, 8);
3693 *pos++ = WLAN_EID_CHAN_SWITCH_PARAM; /* EID */
3694 *pos++ = 6; /* IE length */
3695 *pos++ = sdata->u.mesh.mshcfg.dot11MeshTTL; /* Mesh TTL */
3696 *pos = 0x00; /* Mesh Flag: Tx Restrict, Initiator, Reason */
3697 *pos |= WLAN_EID_CHAN_SWITCH_PARAM_INITIATOR;
3698 *pos++ |= csa_settings->block_tx ?
3699 WLAN_EID_CHAN_SWITCH_PARAM_TX_RESTRICT : 0x00;
3700 put_unaligned_le16(WLAN_REASON_MESH_CHAN, pos); /* Reason Cd */
3701 pos += 2;
ca91dc97 3702 put_unaligned_le16(ifmsh->pre_value, pos);/* Precedence Value */
c6da674a 3703 pos += 2;
c6da674a
CYY		 3704 }
3705
75d627d5
SW		 3706 if (csa_settings->chandef.width == NL80211_CHAN_WIDTH_80 ||
3707 csa_settings->chandef.width == NL80211_CHAN_WIDTH_80P80 ||
3708 csa_settings->chandef.width == NL80211_CHAN_WIDTH_160) {
3709 skb_put(skb, 5);
3710 ieee80211_ie_build_wide_bw_cs(pos, &csa_settings->chandef);
3711 }
3712
c6da674a
CYY		 3713 ieee80211_tx_skb(sdata, skb);
3714 return 0;
3715}
2475b1cc 3716
a7022e65
FF		 3717static bool
3718ieee80211_extend_noa_desc(struct ieee80211_noa_data *data, u32 tsf, int i)
3719{
3720 s32 end = data->desc[i].start + data->desc[i].duration - (tsf + 1);
3721 int skip;
3722
3723 if (end > 0)
3724 return false;
3725
519ee691
JD		 3726 /* One shot NOA */
3727 if (data->count[i] == 1)
3728 return false;
3729
3730 if (data->desc[i].interval == 0)
3731 return false;
3732
a7022e65
FF		 3733 /* End time is in the past, check for repetitions */
3734 skip = DIV_ROUND_UP(-end, data->desc[i].interval);
3735 if (data->count[i] < 255) {
3736 if (data->count[i] <= skip) {
3737 data->count[i] = 0;
3738 return false;
3739 }
3740
3741 data->count[i] -= skip;
3742 }
3743
3744 data->desc[i].start += skip * data->desc[i].interval;
3745
3746 return true;
3747}
3748
3749static bool
3750ieee80211_extend_absent_time(struct ieee80211_noa_data *data, u32 tsf,
3751 s32 *offset)
3752{
3753 bool ret = false;
3754 int i;
3755
3756 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) {
3757 s32 cur;
3758
3759 if (!data->count[i])
3760 continue;
3761
3762 if (ieee80211_extend_noa_desc(data, tsf + *offset, i))
3763 ret = true;
3764
3765 cur = data->desc[i].start - tsf;
3766 if (cur > *offset)
3767 continue;
3768
3769 cur = data->desc[i].start + data->desc[i].duration - tsf;
3770 if (cur > *offset)
3771 *offset = cur;
3772 }
3773
3774 return ret;
3775}
3776
3777static u32
3778ieee80211_get_noa_absent_time(struct ieee80211_noa_data *data, u32 tsf)
3779{
3780 s32 offset = 0;
3781 int tries = 0;
3782 /*
3783 * arbitrary limit, used to avoid infinite loops when combined NoA
3784 * descriptors cover the full time period.
3785 */
3786 int max_tries = 5;
3787
3788 ieee80211_extend_absent_time(data, tsf, &offset);
3789 do {
3790 if (!ieee80211_extend_absent_time(data, tsf, &offset))
3791 break;
3792
3793 tries++;
3794 } while (tries < max_tries);
3795
3796 return offset;
3797}
3798
3799void ieee80211_update_p2p_noa(struct ieee80211_noa_data *data, u32 tsf)
3800{
3801 u32 next_offset = BIT(31) - 1;
3802 int i;
3803
3804 data->absent = 0;
3805 data->has_next_tsf = false;
3806 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) {
3807 s32 start;
3808
3809 if (!data->count[i])
3810 continue;
3811
3812 ieee80211_extend_noa_desc(data, tsf, i);
3813 start = data->desc[i].start - tsf;
3814 if (start <= 0)
3815 data->absent |= BIT(i);
3816
3817 if (next_offset > start)
3818 next_offset = start;
3819
3820 data->has_next_tsf = true;
3821 }
3822
3823 if (data->absent)
3824 next_offset = ieee80211_get_noa_absent_time(data, tsf);
3825
3826 data->next_tsf = tsf + next_offset;
3827}
3828EXPORT_SYMBOL(ieee80211_update_p2p_noa);
3829
3830int ieee80211_parse_p2p_noa(const struct ieee80211_p2p_noa_attr *attr,
3831 struct ieee80211_noa_data *data, u32 tsf)
3832{
3833 int ret = 0;
3834 int i;
3835
3836 memset(data, 0, sizeof(*data));
3837
3838 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) {
3839 const struct ieee80211_p2p_noa_desc *desc = &attr->desc[i];
3840
3841 if (!desc->count || !desc->duration)
3842 continue;
3843
3844 data->count[i] = desc->count;
3845 data->desc[i].start = le32_to_cpu(desc->start_time);
3846 data->desc[i].duration = le32_to_cpu(desc->duration);
3847 data->desc[i].interval = le32_to_cpu(desc->interval);
3848
3849 if (data->count[i] > 1 &&
3850 data->desc[i].interval < data->desc[i].duration)
3851 continue;
3852
3853 ieee80211_extend_noa_desc(data, tsf, i);
3854 ret++;
3855 }
3856
3857 if (ret)
3858 ieee80211_update_p2p_noa(data, tsf);
3859
3860 return ret;
3861}
3862EXPORT_SYMBOL(ieee80211_parse_p2p_noa);
057d5f4b
TP		 3863
3864void ieee80211_recalc_dtim(struct ieee80211_local *local,
3865 struct ieee80211_sub_if_data *sdata)
3866{
3867 u64 tsf = drv_get_tsf(local, sdata);
3868 u64 dtim_count = 0;
3869 u16 beacon_int = sdata->vif.bss_conf.beacon_int * 1024;
3870 u8 dtim_period = sdata->vif.bss_conf.dtim_period;
3871 struct ps_data *ps;
3872 u8 bcns_from_dtim;
3873
3874 if (tsf == -1ULL || !beacon_int || !dtim_period)
3875 return;
3876
3877 if (sdata->vif.type == NL80211_IFTYPE_AP ||
3878 sdata->vif.type == NL80211_IFTYPE_AP_VLAN) {
3879 if (!sdata->bss)
3880 return;
3881
3882 ps = &sdata->bss->ps;
3883 } else if (ieee80211_vif_is_mesh(&sdata->vif)) {
3884 ps = &sdata->u.mesh.ps;
3885 } else {
3886 return;
3887 }
3888
3889 /*
3890 * actually finds last dtim_count, mac80211 will update in
3891 * __beacon_add_tim().
3892 * dtim_count = dtim_period - (tsf / bcn_int) % dtim_period
3893 */
3894 do_div(tsf, beacon_int);
3895 bcns_from_dtim = do_div(tsf, dtim_period);
3896 /* just had a DTIM */
3897 if (!bcns_from_dtim)
3898 dtim_count = 0;
3899 else
3900 dtim_count = dtim_period - bcns_from_dtim;
3901
3902 ps->dtim_count = dtim_count;
3903}
73de86a3 3904
71e6195e
MK		 3905static u8 ieee80211_chanctx_radar_detect(struct ieee80211_local *local,
3906 struct ieee80211_chanctx *ctx)
3907{
b4f85443 3908 struct ieee80211_link_data *link;
71e6195e
MK		 3909 u8 radar_detect = 0;
3910
5435af6e 3911 lockdep_assert_wiphy(local->hw.wiphy);
71e6195e
MK		 3912
3913 if (WARN_ON(ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED))
3914 return 0;
3915
b4f85443
JB		 3916 list_for_each_entry(link, &ctx->reserved_links, reserved_chanctx_list)
3917 if (link->reserved_radar_required)
6092077a 3918 radar_detect |= BIT(link->reserved.oper.width);
71e6195e
MK		 3919
3920 /*
3921 * An in-place reservation context should not have any assigned vifs
3922 * until it replaces the other context.
3923 */
3924 WARN_ON(ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER &&
b4f85443
JB		 3925 !list_empty(&ctx->assigned_links));
3926
3927 list_for_each_entry(link, &ctx->assigned_links, assigned_chanctx_list) {
b4f85443
JB		 3928 if (!link->radar_required)
3929 continue;
3930
3931 radar_detect |=
6092077a 3932 BIT(link->conf->chanreq.oper.width);
b4f85443 3933 }
71e6195e
MK		 3934
3935 return radar_detect;
3936}
3937
73de86a3
LC		 3938int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata,
3939 const struct cfg80211_chan_def *chandef,
3940 enum ieee80211_chanctx_mode chanmode,
3941 u8 radar_detect)
3942{
3943 struct ieee80211_local *local = sdata->local;
3944 struct ieee80211_sub_if_data *sdata_iter;
3945 enum nl80211_iftype iftype = sdata->wdev.iftype;
73de86a3 3946 struct ieee80211_chanctx *ctx;
73de86a3 3947 int total = 1;
e227300c
PK		 3948 struct iface_combination_params params = {
3949 .radar_detect = radar_detect,
3950 };
73de86a3 3951
5435af6e 3952 lockdep_assert_wiphy(local->hw.wiphy);
73de86a3
LC		 3953
3954 if (WARN_ON(hweight32(radar_detect) > 1))
3955 return -EINVAL;
3956
b6a55015
LC		 3957 if (WARN_ON(chandef && chanmode == IEEE80211_CHANCTX_SHARED &&
3958 !chandef->chan))
73de86a3
LC		 3959 return -EINVAL;
3960
3961 if (WARN_ON(iftype >= NUM_NL80211_IFTYPES))
3962 return -EINVAL;
3963
ac668afe
JB		 3964 if (sdata->vif.type == NL80211_IFTYPE_AP ||
3965 sdata->vif.type == NL80211_IFTYPE_MESH_POINT) {
3966 /*
3967 * always passing this is harmless, since it'll be the
3968 * same value that cfg80211 finds if it finds the same
3969 * interface ... and that's always allowed
3970 */
3971 params.new_beacon_int = sdata->vif.bss_conf.beacon_int;
3972 }
3973
73de86a3 3974 /* Always allow software iftypes */
e6f40511 3975 if (cfg80211_iftype_allowed(local->hw.wiphy, iftype, 0, 1)) {
73de86a3
LC		 3976 if (radar_detect)
3977 return -EINVAL;
3978 return 0;
3979 }
3980
e227300c
PK		 3981 if (chandef)
3982 params.num_different_channels = 1;
73de86a3
LC		 3983
3984 if (iftype != NL80211_IFTYPE_UNSPECIFIED)
e227300c 3985 params.iftype_num[iftype] = 1;
73de86a3
LC		 3986
3987 list_for_each_entry(ctx, &local->chanctx_list, list) {
5bcae31d
MK		 3988 if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED)
3989 continue;
e227300c
PK		 3990 params.radar_detect |=
3991 ieee80211_chanctx_radar_detect(local, ctx);
73de86a3 3992 if (ctx->mode == IEEE80211_CHANCTX_EXCLUSIVE) {
e227300c 3993 params.num_different_channels++;
73de86a3
LC		 3994 continue;
3995 }
b6a55015 3996 if (chandef && chanmode == IEEE80211_CHANCTX_SHARED &&
73de86a3
LC		 3997 cfg80211_chandef_compatible(chandef,
3998 &ctx->conf.def))
3999 continue;
e227300c 4000 params.num_different_channels++;
73de86a3
LC		 4001 }
4002
4003 list_for_each_entry_rcu(sdata_iter, &local->interfaces, list) {
4004 struct wireless_dev *wdev_iter;
4005
4006 wdev_iter = &sdata_iter->wdev;
4007
4008 if (sdata_iter == sdata ||
0f611d28 4009 !ieee80211_sdata_running(sdata_iter) ||
e6f40511
MP		 4010 cfg80211_iftype_allowed(local->hw.wiphy,
4011 wdev_iter->iftype, 0, 1))
73de86a3
LC		 4012 continue;
4013
e227300c 4014 params.iftype_num[wdev_iter->iftype]++;
73de86a3
LC		 4015 total++;
4016 }
4017
e227300c 4018 if (total == 1 && !params.radar_detect)
73de86a3
LC		 4019 return 0;
4020
e227300c 4021 return cfg80211_check_combinations(local->hw.wiphy, &params);
73de86a3 4022}
6fa001bc
MK		 4023
4024static void
4025ieee80211_iter_max_chans(const struct ieee80211_iface_combination *c,
4026 void *data)
4027{
4028 u32 *max_num_different_channels = data;
4029
4030 *max_num_different_channels = max(*max_num_different_channels,
4031 c->num_different_channels);
4032}
4033
4034int ieee80211_max_num_channels(struct ieee80211_local *local)
4035{
4036 struct ieee80211_sub_if_data *sdata;
6fa001bc 4037 struct ieee80211_chanctx *ctx;
6fa001bc
MK		 4038 u32 max_num_different_channels = 1;
4039 int err;
e227300c 4040 struct iface_combination_params params = {0};
6fa001bc 4041
5435af6e 4042 lockdep_assert_wiphy(local->hw.wiphy);
6fa001bc
MK		 4043
4044 list_for_each_entry(ctx, &local->chanctx_list, list) {
5bcae31d
MK		 4045 if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED)
4046 continue;
4047
e227300c 4048 params.num_different_channels++;
6fa001bc 4049
e227300c
PK		 4050 params.radar_detect |=
4051 ieee80211_chanctx_radar_detect(local, ctx);
6fa001bc
MK		 4052 }
4053
4054 list_for_each_entry_rcu(sdata, &local->interfaces, list)
e227300c 4055 params.iftype_num[sdata->wdev.iftype]++;
6fa001bc 4056
e227300c
PK		 4057 err = cfg80211_iter_combinations(local->hw.wiphy, &params,
4058 ieee80211_iter_max_chans,
6fa001bc
MK		 4059 &max_num_different_channels);
4060 if (err < 0)
4061 return err;
4062
4063 return max_num_different_channels;
7957c6c8
TP		 4064}
4065
4066void ieee80211_add_s1g_capab_ie(struct ieee80211_sub_if_data *sdata,
4067 struct ieee80211_sta_s1g_cap *caps,
4068 struct sk_buff *skb)
4069{
4070 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4071 struct ieee80211_s1g_cap s1g_capab;
4072 u8 *pos;
4073 int i;
4074
4075 if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
4076 return;
4077
4078 if (!caps->s1g)
4079 return;
4080
4081 memcpy(s1g_capab.capab_info, caps->cap, sizeof(caps->cap));
4082 memcpy(s1g_capab.supp_mcs_nss, caps->nss_mcs, sizeof(caps->nss_mcs));
4083
4084 /* override the capability info */
4085 for (i = 0; i < sizeof(ifmgd->s1g_capa.capab_info); i++) {
4086 u8 mask = ifmgd->s1g_capa_mask.capab_info[i];
4087
4088 s1g_capab.capab_info[i] &= ~mask;
4089 s1g_capab.capab_info[i] |= ifmgd->s1g_capa.capab_info[i] & mask;
4090 }
4091
4092 /* then MCS and NSS set */
4093 for (i = 0; i < sizeof(ifmgd->s1g_capa.supp_mcs_nss); i++) {
4094 u8 mask = ifmgd->s1g_capa_mask.supp_mcs_nss[i];
4095
4096 s1g_capab.supp_mcs_nss[i] &= ~mask;
4097 s1g_capab.supp_mcs_nss[i] |=
4098 ifmgd->s1g_capa.supp_mcs_nss[i] & mask;
4099 }
4100
4101 pos = skb_put(skb, 2 + sizeof(s1g_capab));
4102 *pos++ = WLAN_EID_S1G_CAPABILITIES;
4103 *pos++ = sizeof(s1g_capab);
4104
4105 memcpy(pos, &s1g_capab, sizeof(s1g_capab));
6fa001bc 4106}
40b861a0 4107
1d00ce80
TP		 4108void ieee80211_add_aid_request_ie(struct ieee80211_sub_if_data *sdata,
4109 struct sk_buff *skb)
4110{
4111 u8 *pos = skb_put(skb, 3);
4112
4113 *pos++ = WLAN_EID_AID_REQUEST;
4114 *pos++ = 1;
4115 *pos++ = 0;
4116}
4117
40b861a0
AN		 4118u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo)
4119{
4120 *buf++ = WLAN_EID_VENDOR_SPECIFIC;
4121 *buf++ = 7; /* len */
4122 *buf++ = 0x00; /* Microsoft OUI 00:50:F2 */
4123 *buf++ = 0x50;
4124 *buf++ = 0xf2;
4125 *buf++ = 2; /* WME */
4126 *buf++ = 0; /* WME info */
4127 *buf++ = 1; /* WME ver */
4128 *buf++ = qosinfo; /* U-APSD no in use */
4129
4130 return buf;
4131}
ba8c3d6f 4132
f2ac7e30
MK		 4133void ieee80211_txq_get_depth(struct ieee80211_txq *txq,
4134 unsigned long *frame_cnt,
4135 unsigned long *byte_cnt)
4136{
4137 struct txq_info *txqi = to_txq_info(txq);
bb42f2d1
THJ		 4138 u32 frag_cnt = 0, frag_bytes = 0;
4139 struct sk_buff *skb;
4140
4141 skb_queue_walk(&txqi->frags, skb) {
4142 frag_cnt++;
4143 frag_bytes += skb->len;
4144 }
f2ac7e30
MK		 4145
4146 if (frame_cnt)
bb42f2d1 4147 *frame_cnt = txqi->tin.backlog_packets + frag_cnt;
f2ac7e30
MK		 4148
4149 if (byte_cnt)
bb42f2d1 4150 *byte_cnt = txqi->tin.backlog_bytes + frag_bytes;
f2ac7e30
MK		 4151}
4152EXPORT_SYMBOL(ieee80211_txq_get_depth);
f438ceb8
EG		 4153
4154const u8 ieee80211_ac_to_qos_mask[IEEE80211_NUM_ACS] = {
4155 IEEE80211_WMM_IE_STA_QOSINFO_AC_VO,
4156 IEEE80211_WMM_IE_STA_QOSINFO_AC_VI,
4157 IEEE80211_WMM_IE_STA_QOSINFO_AC_BE,
4158 IEEE80211_WMM_IE_STA_QOSINFO_AC_BK
4159};
05d10957
TP		 4160
4161u16 ieee80211_encode_usf(int listen_interval)
4162{
4163 static const int listen_int_usf[] = { 1, 10, 1000, 10000 };
4164 u16 ui, usf = 0;
4165
4166 /* find greatest USF */
4167 while (usf < IEEE80211_MAX_USF) {
4168 if (listen_interval % listen_int_usf[usf + 1])
4169 break;
4170 usf += 1;
4171 }
4172 ui = listen_interval / listen_int_usf[usf];
4173
4174 /* error if there is a remainder. Should've been checked by user */
4175 WARN_ON_ONCE(ui > IEEE80211_MAX_UI);
4176 listen_interval = FIELD_PREP(LISTEN_INT_USF, usf) |
4177 FIELD_PREP(LISTEN_INT_UI, ui);
4178
4179 return (u16) listen_interval;
4180}
820acc81 4181
ea8af8be 4182/* this may return more than ieee80211_put_eht_cap() will need */
90233160 4183u8 ieee80211_ie_len_eht_cap(struct ieee80211_sub_if_data *sdata)
820acc81
IP		 4184{
4185 const struct ieee80211_sta_he_cap *he_cap;
4186 const struct ieee80211_sta_eht_cap *eht_cap;
4187 struct ieee80211_supported_band *sband;
ea5cba26 4188 bool is_ap;
820acc81
IP		 4189 u8 n;
4190
4191 sband = ieee80211_get_sband(sdata);
4192 if (!sband)
4193 return 0;
4194
90233160
JB		 4195 he_cap = ieee80211_get_he_iftype_cap_vif(sband, &sdata->vif);
4196 eht_cap = ieee80211_get_eht_iftype_cap_vif(sband, &sdata->vif);
820acc81
IP		 4197 if (!he_cap || !eht_cap)
4198 return 0;
4199
90233160 4200 is_ap = sdata->vif.type == NL80211_IFTYPE_AP;
ea5cba26 4201
820acc81 4202 n = ieee80211_eht_mcs_nss_size(&he_cap->he_cap_elem,
ea5cba26
JB		 4203 &eht_cap->eht_cap_elem,
4204 is_ap);
820acc81 4205 return 2 + 1 +
dd01579e 4206 sizeof(eht_cap->eht_cap_elem) + n +
820acc81
IP		 4207 ieee80211_eht_ppe_size(eht_cap->eht_ppe_thres[0],
4208 eht_cap->eht_cap_elem.phy_cap_info);
4209 return 0;
4210}
4211
ea8af8be
JB		 4212int ieee80211_put_eht_cap(struct sk_buff *skb,
4213 struct ieee80211_sub_if_data *sdata,
4214 const struct ieee80211_supported_band *sband,
4215 const struct ieee80211_conn_settings *conn)
820acc81 4216{
ea8af8be
JB		 4217 const struct ieee80211_sta_he_cap *he_cap =
4218 ieee80211_get_he_iftype_cap_vif(sband, &sdata->vif);
4219 const struct ieee80211_sta_eht_cap *eht_cap =
4220 ieee80211_get_eht_iftype_cap_vif(sband, &sdata->vif);
4221 bool for_ap = sdata->vif.type == NL80211_IFTYPE_AP;
4222 struct ieee80211_eht_cap_elem_fixed fixed;
6239da18 4223 struct ieee80211_he_cap_elem he;
820acc81 4224 u8 mcs_nss_len, ppet_len;
6239da18 4225 u8 orig_mcs_nss_len;
820acc81 4226 u8 ie_len;
820acc81 4227
6239da18
JB		 4228 if (!conn)
4229 conn = &ieee80211_conn_settings_unlimited;
4230
820acc81
IP		 4231 /* Make sure we have place for the IE */
4232 if (!he_cap || !eht_cap)
ea8af8be 4233 return 0;
820acc81 4234
6239da18
JB		 4235 orig_mcs_nss_len = ieee80211_eht_mcs_nss_size(&he_cap->he_cap_elem,
4236 &eht_cap->eht_cap_elem,
4237 for_ap);
4238
4239 ieee80211_get_adjusted_he_cap(conn, he_cap, &he);
4240
4241 fixed = eht_cap->eht_cap_elem;
4242
4243 if (conn->bw_limit < IEEE80211_CONN_BW_LIMIT_80)
4244 fixed.phy_cap_info[6] &=
4245 ~IEEE80211_EHT_PHY_CAP6_MCS15_SUPP_80MHZ;
4246
4247 if (conn->bw_limit < IEEE80211_CONN_BW_LIMIT_160) {
4248 fixed.phy_cap_info[1] &=
4249 ~IEEE80211_EHT_PHY_CAP1_BEAMFORMEE_SS_160MHZ_MASK;
4250 fixed.phy_cap_info[2] &=
4251 ~IEEE80211_EHT_PHY_CAP2_SOUNDING_DIM_160MHZ_MASK;
4252 fixed.phy_cap_info[6] &=
4253 ~IEEE80211_EHT_PHY_CAP6_MCS15_SUPP_160MHZ;
4254 }
4255
4256 if (conn->bw_limit < IEEE80211_CONN_BW_LIMIT_320) {
4257 fixed.phy_cap_info[0] &=
4258 ~IEEE80211_EHT_PHY_CAP0_320MHZ_IN_6GHZ;
4259 fixed.phy_cap_info[1] &=
4260 ~IEEE80211_EHT_PHY_CAP1_BEAMFORMEE_SS_320MHZ_MASK;
4261 fixed.phy_cap_info[2] &=
4262 ~IEEE80211_EHT_PHY_CAP2_SOUNDING_DIM_320MHZ_MASK;
4263 fixed.phy_cap_info[6] &=
4264 ~IEEE80211_EHT_PHY_CAP6_MCS15_SUPP_320MHZ;
4265 }
4266
4267 if (conn->bw_limit == IEEE80211_CONN_BW_LIMIT_20)
4268 fixed.phy_cap_info[0] &=
4269 ~IEEE80211_EHT_PHY_CAP0_242_TONE_RU_GT20MHZ;
4270
4271 mcs_nss_len = ieee80211_eht_mcs_nss_size(&he, &fixed, for_ap);
820acc81 4272 ppet_len = ieee80211_eht_ppe_size(eht_cap->eht_ppe_thres[0],
6239da18 4273 fixed.phy_cap_info);
820acc81
IP		 4274
4275 ie_len = 2 + 1 + sizeof(eht_cap->eht_cap_elem) + mcs_nss_len + ppet_len;
ea8af8be
JB		 4276 if (skb_tailroom(skb) < ie_len)
4277 return -ENOBUFS;
820acc81 4278
ea8af8be
JB		 4279 skb_put_u8(skb, WLAN_EID_EXTENSION);
4280 skb_put_u8(skb, ie_len - 2);
4281 skb_put_u8(skb, WLAN_EID_EXT_EHT_CAPABILITY);
4282 skb_put_data(skb, &fixed, sizeof(fixed));
820acc81 4283
6239da18
JB		 4284 if (mcs_nss_len == 4 && orig_mcs_nss_len != 4) {
4285 /*
4286 * If the (non-AP) STA became 20 MHz only, then convert from
4287 * <=80 to 20-MHz-only format, where MCSes are indicated in
4288 * the groups 0-7, 8-9, 10-11, 12-13 rather than just 0-9,
4289 * 10-11, 12-13. Thus, use 0-9 for 0-7 and 8-9.
4290 */
ea8af8be
JB		 4291 skb_put_u8(skb, eht_cap->eht_mcs_nss_supp.bw._80.rx_tx_mcs9_max_nss);
4292 skb_put_u8(skb, eht_cap->eht_mcs_nss_supp.bw._80.rx_tx_mcs9_max_nss);
4293 skb_put_u8(skb, eht_cap->eht_mcs_nss_supp.bw._80.rx_tx_mcs11_max_nss);
4294 skb_put_u8(skb, eht_cap->eht_mcs_nss_supp.bw._80.rx_tx_mcs13_max_nss);
6239da18 4295 } else {
ea8af8be 4296 skb_put_data(skb, &eht_cap->eht_mcs_nss_supp, mcs_nss_len);
6239da18 4297 }
820acc81 4298
ea8af8be
JB		 4299 if (ppet_len)
4300 skb_put_data(skb, &eht_cap->eht_ppe_thres, ppet_len);
820acc81 4301
ea8af8be 4302 return 0;
820acc81 4303}
310c8387
JB		 4304
4305const char *ieee80211_conn_mode_str(enum ieee80211_conn_mode mode)
4306{
4307 static const char * const modes[] = {
4308 [IEEE80211_CONN_MODE_S1G] = "S1G",
4309 [IEEE80211_CONN_MODE_LEGACY] = "legacy",
4310 [IEEE80211_CONN_MODE_HT] = "HT",
4311 [IEEE80211_CONN_MODE_VHT] = "VHT",
4312 [IEEE80211_CONN_MODE_HE] = "HE",
4313 [IEEE80211_CONN_MODE_EHT] = "EHT",
4314 };
4315
4316 if (WARN_ON(mode >= ARRAY_SIZE(modes)))
4317 return "<out of range>";
4318
4319 return modes[mode] ?: "<missing string>";
4320}
4321
4322enum ieee80211_conn_bw_limit
4323ieee80211_min_bw_limit_from_chandef(struct cfg80211_chan_def *chandef)
4324{
4325 switch (chandef->width) {
4326 case NL80211_CHAN_WIDTH_20_NOHT:
4327 case NL80211_CHAN_WIDTH_20:
4328 return IEEE80211_CONN_BW_LIMIT_20;
4329 case NL80211_CHAN_WIDTH_40:
4330 return IEEE80211_CONN_BW_LIMIT_40;
4331 case NL80211_CHAN_WIDTH_80:
4332 return IEEE80211_CONN_BW_LIMIT_80;
4333 case NL80211_CHAN_WIDTH_80P80:
4334 case NL80211_CHAN_WIDTH_160:
4335 return IEEE80211_CONN_BW_LIMIT_160;
4336 case NL80211_CHAN_WIDTH_320:
4337 return IEEE80211_CONN_BW_LIMIT_320;
4338 default:
4339 WARN(1, "unhandled chandef width %d\n", chandef->width);
4340 return IEEE80211_CONN_BW_LIMIT_20;
4341 }
4342}
Linux 6.x block layer and io_uring tree(s)