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Merge tag 'xtensa-20180820' of git://github.com/jcmvbkbc/linux-xtensa
[linux-2.6-block.git] / net / mac80211 / util.c
CommitLineData
c2d1560a
JB		 1/*
2 * Copyright 2002-2005, Instant802 Networks, Inc.
3 * Copyright 2005-2006, Devicescape Software, Inc.
4 * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
5 * Copyright 2007 Johannes Berg <johannes@sipsolutions.net>
d98ad83e 6 * Copyright 2013-2014 Intel Mobile Communications GmbH
da6a4352 7 * Copyright (C) 2015-2017 Intel Deutschland GmbH
e552af05 8 * Copyright (C) 2018 Intel Corporation
c2d1560a
JB		 9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation.
13 *
14 * utilities for mac80211
15 */
16
17#include <net/mac80211.h>
18#include <linux/netdevice.h>
bc3b2d7f 19#include <linux/export.h>
c2d1560a
JB		 20#include <linux/types.h>
21#include <linux/slab.h>
22#include <linux/skbuff.h>
23#include <linux/etherdevice.h>
24#include <linux/if_arp.h>
c2d1560a 25#include <linux/bitmap.h>
dd76986b 26#include <linux/crc32.h>
881d966b 27#include <net/net_namespace.h>
c2d1560a 28#include <net/cfg80211.h>
dabeb344 29#include <net/rtnetlink.h>
c2d1560a
JB		 30
31#include "ieee80211_i.h"
24487981 32#include "driver-ops.h"
2c8dccc7 33#include "rate.h"
ee385855 34#include "mesh.h"
c2d1560a 35#include "wme.h"
f2753ddb 36#include "led.h"
fffd0934 37#include "wep.h"
c2d1560a
JB		 38
39/* privid for wiphys to determine whether they belong to us or not */
8a47cea7 40const void *const mac80211_wiphy_privid = &mac80211_wiphy_privid;
c2d1560a 41
9a95371a
LR		 42struct ieee80211_hw *wiphy_to_ieee80211_hw(struct wiphy *wiphy)
43{
44 struct ieee80211_local *local;
45 BUG_ON(!wiphy);
46
47 local = wiphy_priv(wiphy);
48 return &local->hw;
49}
50EXPORT_SYMBOL(wiphy_to_ieee80211_hw);
c2d1560a 51
5cf121c3 52void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx)
c2d1560a 53{
252b86c4 54 struct sk_buff *skb;
2de8e0d9
JB		 55 struct ieee80211_hdr *hdr;
56
252b86c4 57 skb_queue_walk(&tx->skbs, skb) {
2de8e0d9
JB		 58 hdr = (struct ieee80211_hdr *) skb->data;
59 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
252b86c4 60 }
c2d1560a
JB		 61}
62
57fbcce3 63int ieee80211_frame_duration(enum nl80211_band band, size_t len,
438b61b7
SW		 64 int rate, int erp, int short_preamble,
65 int shift)
c2d1560a
JB		 66{
67 int dur;
68
69 /* calculate duration (in microseconds, rounded up to next higher
70 * integer if it includes a fractional microsecond) to send frame of
71 * len bytes (does not include FCS) at the given rate. Duration will
72 * also include SIFS.
73 *
74 * rate is in 100 kbps, so divident is multiplied by 10 in the
75 * DIV_ROUND_UP() operations.
438b61b7
SW		 76 *
77 * shift may be 2 for 5 MHz channels or 1 for 10 MHz channels, and
78 * is assumed to be 0 otherwise.
c2d1560a
JB		 79 */
80
57fbcce3 81 if (band == NL80211_BAND_5GHZ || erp) {
c2d1560a
JB		 82 /*
83 * OFDM:
84 *
85 * N_DBPS = DATARATE x 4
86 * N_SYM = Ceiling((16+8xLENGTH+6) / N_DBPS)
87 * (16 = SIGNAL time, 6 = tail bits)
88 * TXTIME = T_PREAMBLE + T_SIGNAL + T_SYM x N_SYM + Signal Ext
89 *
90 * T_SYM = 4 usec
438b61b7 91 * 802.11a - 18.5.2: aSIFSTime = 16 usec
c2d1560a
JB		 92 * 802.11g - 19.8.4: aSIFSTime = 10 usec +
93 * signal ext = 6 usec
94 */
c2d1560a 95 dur = 16; /* SIFS + signal ext */
438b61b7
SW		 96 dur += 16; /* IEEE 802.11-2012 18.3.2.4: T_PREAMBLE = 16 usec */
97 dur += 4; /* IEEE 802.11-2012 18.3.2.4: T_SIGNAL = 4 usec */
438b61b7
SW		 98
99 /* IEEE 802.11-2012 18.3.2.4: all values above are:
100 * * times 4 for 5 MHz
101 * * times 2 for 10 MHz
102 */
103 dur *= 1 << shift;
2103dec1
SW		 104
105 /* rates should already consider the channel bandwidth,
106 * don't apply divisor again.
107 */
108 dur += 4 * DIV_ROUND_UP((16 + 8 * (len + 4) + 6) * 10,
109 4 * rate); /* T_SYM x N_SYM */
c2d1560a
JB		 110 } else {
111 /*
112 * 802.11b or 802.11g with 802.11b compatibility:
113 * 18.3.4: TXTIME = PreambleLength + PLCPHeaderTime +
114 * Ceiling(((LENGTH+PBCC)x8)/DATARATE). PBCC=0.
115 *
116 * 802.11 (DS): 15.3.3, 802.11b: 18.3.4
117 * aSIFSTime = 10 usec
118 * aPreambleLength = 144 usec or 72 usec with short preamble
119 * aPLCPHeaderLength = 48 usec or 24 usec with short preamble
120 */
121 dur = 10; /* aSIFSTime = 10 usec */
122 dur += short_preamble ? (72 + 24) : (144 + 48);
123
124 dur += DIV_ROUND_UP(8 * (len + 4) * 10, rate);
125 }
126
127 return dur;
128}
129
130/* Exported duration function for driver use */
32bfd35d
JB		 131__le16 ieee80211_generic_frame_duration(struct ieee80211_hw *hw,
132 struct ieee80211_vif *vif,
57fbcce3 133 enum nl80211_band band,
8318d78a
JB		 134 size_t frame_len,
135 struct ieee80211_rate *rate)
c2d1560a 136{
25d834e1 137 struct ieee80211_sub_if_data *sdata;
c2d1560a 138 u16 dur;
438b61b7 139 int erp, shift = 0;
25d834e1 140 bool short_preamble = false;
c2d1560a 141
8318d78a 142 erp = 0;
25d834e1
JB		 143 if (vif) {
144 sdata = vif_to_sdata(vif);
bda3933a 145 short_preamble = sdata->vif.bss_conf.use_short_preamble;
25d834e1
JB		 146 if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE)
147 erp = rate->flags & IEEE80211_RATE_ERP_G;
438b61b7 148 shift = ieee80211_vif_get_shift(vif);
25d834e1 149 }
8318d78a 150
4ee73f33 151 dur = ieee80211_frame_duration(band, frame_len, rate->bitrate, erp,
438b61b7 152 short_preamble, shift);
c2d1560a
JB		 153
154 return cpu_to_le16(dur);
155}
156EXPORT_SYMBOL(ieee80211_generic_frame_duration);
157
32bfd35d
JB		 158__le16 ieee80211_rts_duration(struct ieee80211_hw *hw,
159 struct ieee80211_vif *vif, size_t frame_len,
e039fa4a 160 const struct ieee80211_tx_info *frame_txctl)
c2d1560a
JB		 161{
162 struct ieee80211_local *local = hw_to_local(hw);
163 struct ieee80211_rate *rate;
25d834e1 164 struct ieee80211_sub_if_data *sdata;
471b3efd 165 bool short_preamble;
2103dec1 166 int erp, shift = 0, bitrate;
c2d1560a 167 u16 dur;
2e92e6f2
JB		 168 struct ieee80211_supported_band *sband;
169
4ee73f33 170 sband = local->hw.wiphy->bands[frame_txctl->band];
c2d1560a 171
25d834e1 172 short_preamble = false;
7e9ed188 173
e039fa4a 174 rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx];
8318d78a
JB		 175
176 erp = 0;
25d834e1
JB		 177 if (vif) {
178 sdata = vif_to_sdata(vif);
bda3933a 179 short_preamble = sdata->vif.bss_conf.use_short_preamble;
25d834e1
JB		 180 if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE)
181 erp = rate->flags & IEEE80211_RATE_ERP_G;
438b61b7 182 shift = ieee80211_vif_get_shift(vif);
25d834e1 183 }
c2d1560a 184
2103dec1
SW		 185 bitrate = DIV_ROUND_UP(rate->bitrate, 1 << shift);
186
c2d1560a 187 /* CTS duration */
2103dec1 188 dur = ieee80211_frame_duration(sband->band, 10, bitrate,
438b61b7 189 erp, short_preamble, shift);
c2d1560a 190 /* Data frame duration */
2103dec1 191 dur += ieee80211_frame_duration(sband->band, frame_len, bitrate,
438b61b7 192 erp, short_preamble, shift);
c2d1560a 193 /* ACK duration */
2103dec1 194 dur += ieee80211_frame_duration(sband->band, 10, bitrate,
438b61b7 195 erp, short_preamble, shift);
c2d1560a
JB		 196
197 return cpu_to_le16(dur);
198}
199EXPORT_SYMBOL(ieee80211_rts_duration);
200
32bfd35d
JB		 201__le16 ieee80211_ctstoself_duration(struct ieee80211_hw *hw,
202 struct ieee80211_vif *vif,
c2d1560a 203 size_t frame_len,
e039fa4a 204 const struct ieee80211_tx_info *frame_txctl)
c2d1560a
JB		 205{
206 struct ieee80211_local *local = hw_to_local(hw);
207 struct ieee80211_rate *rate;
25d834e1 208 struct ieee80211_sub_if_data *sdata;
471b3efd 209 bool short_preamble;
2103dec1 210 int erp, shift = 0, bitrate;
c2d1560a 211 u16 dur;
2e92e6f2
JB		 212 struct ieee80211_supported_band *sband;
213
4ee73f33 214 sband = local->hw.wiphy->bands[frame_txctl->band];
c2d1560a 215
25d834e1 216 short_preamble = false;
7e9ed188 217
e039fa4a 218 rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx];
8318d78a 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;
25d834e1
JB		 223 if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE)
224 erp = rate->flags & IEEE80211_RATE_ERP_G;
438b61b7 225 shift = ieee80211_vif_get_shift(vif);
25d834e1 226 }
c2d1560a 227
2103dec1
SW		 228 bitrate = DIV_ROUND_UP(rate->bitrate, 1 << shift);
229
c2d1560a 230 /* Data frame duration */
2103dec1 231 dur = ieee80211_frame_duration(sband->band, frame_len, bitrate,
438b61b7 232 erp, short_preamble, shift);
e039fa4a 233 if (!(frame_txctl->flags & IEEE80211_TX_CTL_NO_ACK)) {
c2d1560a 234 /* ACK duration */
2103dec1 235 dur += ieee80211_frame_duration(sband->band, 10, bitrate,
438b61b7 236 erp, short_preamble, shift);
c2d1560a
JB		 237 }
238
239 return cpu_to_le16(dur);
240}
241EXPORT_SYMBOL(ieee80211_ctstoself_duration);
242
3a25a8c8
JB		 243void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue)
244{
245 struct ieee80211_sub_if_data *sdata;
a6f38ac3
JB		 246 int n_acs = IEEE80211_NUM_ACS;
247
80a83cfc
MK		 248 if (local->ops->wake_tx_queue)
249 return;
250
a6f38ac3
JB		 251 if (local->hw.queues < IEEE80211_NUM_ACS)
252 n_acs = 1;
3a25a8c8
JB		 253
254 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
255 int ac;
256
f142c6b9
JB		 257 if (!sdata->dev)
258 continue;
259
3a25a8c8
JB		 260 if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE &&
261 local->queue_stop_reasons[sdata->vif.cab_queue] != 0)
262 continue;
263
a6f38ac3 264 for (ac = 0; ac < n_acs; ac++) {
3a25a8c8
JB		 265 int ac_queue = sdata->vif.hw_queue[ac];
266
267 if (ac_queue == queue ||
268 (sdata->vif.cab_queue == queue &&
269 local->queue_stop_reasons[ac_queue] == 0 &&
270 skb_queue_empty(&local->pending[ac_queue])))
271 netif_wake_subqueue(sdata->dev, ac);
272 }
273 }
274}
275
ce7c9111 276static void __ieee80211_wake_queue(struct ieee80211_hw *hw, int queue,
cca07b00
LC		 277 enum queue_stop_reason reason,
278 bool refcounted)
c2d1560a
JB		 279{
280 struct ieee80211_local *local = hw_to_local(hw);
281
b5878a2d
JB		 282 trace_wake_queue(local, queue, reason);
283
e4e72fb4
JB		 284 if (WARN_ON(queue >= hw->queues))
285 return;
ce7c9111 286
ada15125
JB		 287 if (!test_bit(reason, &local->queue_stop_reasons[queue]))
288 return;
289
856142cd 290 if (!refcounted) {
cca07b00 291 local->q_stop_reasons[queue][reason] = 0;
856142cd 292 } else {
cca07b00 293 local->q_stop_reasons[queue][reason]--;
856142cd
JB		 294 if (WARN_ON(local->q_stop_reasons[queue][reason] < 0))
295 local->q_stop_reasons[queue][reason] = 0;
296 }
cca07b00
LC		 297
298 if (local->q_stop_reasons[queue][reason] == 0)
299 __clear_bit(reason, &local->queue_stop_reasons[queue]);
96f5e66e
JB		 300
301 if (local->queue_stop_reasons[queue] != 0)
302 /* someone still has this queue stopped */
303 return;
304
7236fe29
JB		 305 if (skb_queue_empty(&local->pending[queue])) {
306 rcu_read_lock();
3a25a8c8 307 ieee80211_propagate_queue_wake(local, queue);
7236fe29
JB		 308 rcu_read_unlock();
309 } else
3b8d81e0 310 tasklet_schedule(&local->tx_pending_tasklet);
c2d1560a 311}
ce7c9111 312
96f5e66e 313void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
cca07b00
LC		 314 enum queue_stop_reason reason,
315 bool refcounted)
ce7c9111
KV		 316{
317 struct ieee80211_local *local = hw_to_local(hw);
318 unsigned long flags;
319
320 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
cca07b00 321 __ieee80211_wake_queue(hw, queue, reason, refcounted);
ce7c9111
KV		 322 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
323}
324
325void ieee80211_wake_queue(struct ieee80211_hw *hw, int queue)
326{
327 ieee80211_wake_queue_by_reason(hw, queue,
cca07b00
LC		 328 IEEE80211_QUEUE_STOP_REASON_DRIVER,
329 false);
ce7c9111 330}
c2d1560a
JB		 331EXPORT_SYMBOL(ieee80211_wake_queue);
332
ce7c9111 333static void __ieee80211_stop_queue(struct ieee80211_hw *hw, int queue,
cca07b00
LC		 334 enum queue_stop_reason reason,
335 bool refcounted)
c2d1560a
JB		 336{
337 struct ieee80211_local *local = hw_to_local(hw);
cf0277e7 338 struct ieee80211_sub_if_data *sdata;
a6f38ac3 339 int n_acs = IEEE80211_NUM_ACS;
c2d1560a 340
b5878a2d
JB		 341 trace_stop_queue(local, queue, reason);
342
e4e72fb4
JB		 343 if (WARN_ON(queue >= hw->queues))
344 return;
96f5e66e 345
cca07b00
LC		 346 if (!refcounted)
347 local->q_stop_reasons[queue][reason] = 1;
348 else
349 local->q_stop_reasons[queue][reason]++;
ada15125 350
cca07b00
LC		 351 if (__test_and_set_bit(reason, &local->queue_stop_reasons[queue]))
352 return;
cf0277e7 353
80a83cfc
MK		 354 if (local->ops->wake_tx_queue)
355 return;
356
a6f38ac3
JB		 357 if (local->hw.queues < IEEE80211_NUM_ACS)
358 n_acs = 1;
359
cf0277e7 360 rcu_read_lock();
3a25a8c8
JB		 361 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
362 int ac;
363
f142c6b9
JB		 364 if (!sdata->dev)
365 continue;
366
a6f38ac3 367 for (ac = 0; ac < n_acs; ac++) {
3a25a8c8
JB		 368 if (sdata->vif.hw_queue[ac] == queue ||
369 sdata->vif.cab_queue == queue)
370 netif_stop_subqueue(sdata->dev, ac);
371 }
372 }
cf0277e7 373 rcu_read_unlock();
c2d1560a 374}
ce7c9111 375
96f5e66e 376void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
cca07b00
LC		 377 enum queue_stop_reason reason,
378 bool refcounted)
ce7c9111
KV		 379{
380 struct ieee80211_local *local = hw_to_local(hw);
381 unsigned long flags;
382
383 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
cca07b00 384 __ieee80211_stop_queue(hw, queue, reason, refcounted);
ce7c9111
KV		 385 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
386}
387
388void ieee80211_stop_queue(struct ieee80211_hw *hw, int queue)
389{
390 ieee80211_stop_queue_by_reason(hw, queue,
cca07b00
LC		 391 IEEE80211_QUEUE_STOP_REASON_DRIVER,
392 false);
ce7c9111 393}
c2d1560a
JB		 394EXPORT_SYMBOL(ieee80211_stop_queue);
395
8f77f384
JB		 396void ieee80211_add_pending_skb(struct ieee80211_local *local,
397 struct sk_buff *skb)
398{
399 struct ieee80211_hw *hw = &local->hw;
400 unsigned long flags;
a7bc376c 401 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
3a25a8c8 402 int queue = info->hw_queue;
a7bc376c
JB		 403
404 if (WARN_ON(!info->control.vif)) {
d4fa14cd 405 ieee80211_free_txskb(&local->hw, skb);
a7bc376c
JB		 406 return;
407 }
8f77f384
JB		 408
409 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
cca07b00
LC		 410 __ieee80211_stop_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
411 false);
3b8d81e0 412 __skb_queue_tail(&local->pending[queue], skb);
cca07b00
LC		 413 __ieee80211_wake_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
414 false);
8f77f384
JB		 415 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
416}
417
e3685e03
JB		 418void ieee80211_add_pending_skbs(struct ieee80211_local *local,
419 struct sk_buff_head *skbs)
8f77f384
JB		 420{
421 struct ieee80211_hw *hw = &local->hw;
422 struct sk_buff *skb;
423 unsigned long flags;
b0b97a8a 424 int queue, i;
8f77f384
JB		 425
426 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
8f77f384 427 while ((skb = skb_dequeue(skbs))) {
a7bc376c
JB		 428 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
429
430 if (WARN_ON(!info->control.vif)) {
d4fa14cd 431 ieee80211_free_txskb(&local->hw, skb);
a7bc376c
JB		 432 continue;
433 }
434
3a25a8c8 435 queue = info->hw_queue;
4644ae89
JB		 436
437 __ieee80211_stop_queue(hw, queue,
cca07b00
LC		 438 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
439 false);
4644ae89 440
3b8d81e0 441 __skb_queue_tail(&local->pending[queue], skb);
8f77f384
JB		 442 }
443
3b8d81e0 444 for (i = 0; i < hw->queues; i++)
8f77f384 445 __ieee80211_wake_queue(hw, i,
cca07b00
LC		 446 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
447 false);
8f77f384 448 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
8f77f384
JB		 449}
450
ce7c9111 451void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
445ea4e8 452 unsigned long queues,
cca07b00
LC		 453 enum queue_stop_reason reason,
454 bool refcounted)
c2d1560a 455{
ce7c9111
KV		 456 struct ieee80211_local *local = hw_to_local(hw);
457 unsigned long flags;
c2d1560a
JB		 458 int i;
459
ce7c9111
KV		 460 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
461
445ea4e8 462 for_each_set_bit(i, &queues, hw->queues)
cca07b00 463 __ieee80211_stop_queue(hw, i, reason, refcounted);
ce7c9111
KV		 464
465 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
466}
467
468void ieee80211_stop_queues(struct ieee80211_hw *hw)
469{
445ea4e8 470 ieee80211_stop_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
cca07b00
LC		 471 IEEE80211_QUEUE_STOP_REASON_DRIVER,
472 false);
c2d1560a
JB		 473}
474EXPORT_SYMBOL(ieee80211_stop_queues);
475
92ab8535
TW		 476int ieee80211_queue_stopped(struct ieee80211_hw *hw, int queue)
477{
478 struct ieee80211_local *local = hw_to_local(hw);
3b8d81e0
JB		 479 unsigned long flags;
480 int ret;
96f5e66e 481
e4e72fb4
JB		 482 if (WARN_ON(queue >= hw->queues))
483 return true;
96f5e66e 484
3b8d81e0 485 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
2419ea14
TP		 486 ret = test_bit(IEEE80211_QUEUE_STOP_REASON_DRIVER,
487 &local->queue_stop_reasons[queue]);
3b8d81e0
JB		 488 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
489 return ret;
92ab8535
TW		 490}
491EXPORT_SYMBOL(ieee80211_queue_stopped);
492
ce7c9111 493void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
445ea4e8 494 unsigned long queues,
cca07b00
LC		 495 enum queue_stop_reason reason,
496 bool refcounted)
c2d1560a 497{
ce7c9111
KV		 498 struct ieee80211_local *local = hw_to_local(hw);
499 unsigned long flags;
c2d1560a
JB		 500 int i;
501
ce7c9111
KV		 502 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
503
445ea4e8 504 for_each_set_bit(i, &queues, hw->queues)
cca07b00 505 __ieee80211_wake_queue(hw, i, reason, refcounted);
ce7c9111
KV		 506
507 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
508}
509
510void ieee80211_wake_queues(struct ieee80211_hw *hw)
511{
445ea4e8 512 ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
cca07b00
LC		 513 IEEE80211_QUEUE_STOP_REASON_DRIVER,
514 false);
c2d1560a
JB		 515}
516EXPORT_SYMBOL(ieee80211_wake_queues);
dabeb344 517
26da23b6
LC		 518static unsigned int
519ieee80211_get_vif_queues(struct ieee80211_local *local,
520 struct ieee80211_sub_if_data *sdata)
39ecc01d 521{
26da23b6 522 unsigned int queues;
39ecc01d 523
30686bf7 524 if (sdata && ieee80211_hw_check(&local->hw, QUEUE_CONTROL)) {
39ecc01d
JB		 525 int ac;
526
527 queues = 0;
528
529 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
530 queues |= BIT(sdata->vif.hw_queue[ac]);
531 if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE)
532 queues |= BIT(sdata->vif.cab_queue);
533 } else {
534 /* all queues */
535 queues = BIT(local->hw.queues) - 1;
536 }
537
26da23b6
LC		 538 return queues;
539}
540
4f9610d5
LK		 541void __ieee80211_flush_queues(struct ieee80211_local *local,
542 struct ieee80211_sub_if_data *sdata,
3b24f4c6 543 unsigned int queues, bool drop)
26da23b6 544{
26da23b6
LC		 545 if (!local->ops->flush)
546 return;
547
4f9610d5
LK		 548 /*
549 * If no queue was set, or if the HW doesn't support
550 * IEEE80211_HW_QUEUE_CONTROL - flush all queues
551 */
30686bf7 552 if (!queues || !ieee80211_hw_check(&local->hw, QUEUE_CONTROL))
4f9610d5 553 queues = ieee80211_get_vif_queues(local, sdata);
26da23b6 554
59f48fe2 555 ieee80211_stop_queues_by_reason(&local->hw, queues,
cca07b00
LC		 556 IEEE80211_QUEUE_STOP_REASON_FLUSH,
557 false);
445ea4e8 558
3b24f4c6 559 drv_flush(local, sdata, queues, drop);
445ea4e8 560
59f48fe2 561 ieee80211_wake_queues_by_reason(&local->hw, queues,
cca07b00
LC		 562 IEEE80211_QUEUE_STOP_REASON_FLUSH,
563 false);
39ecc01d
JB		 564}
565
4f9610d5 566void ieee80211_flush_queues(struct ieee80211_local *local,
3b24f4c6 567 struct ieee80211_sub_if_data *sdata, bool drop)
4f9610d5 568{
3b24f4c6 569 __ieee80211_flush_queues(local, sdata, 0, drop);
4f9610d5
LK		 570}
571
26da23b6
LC		 572void ieee80211_stop_vif_queues(struct ieee80211_local *local,
573 struct ieee80211_sub_if_data *sdata,
574 enum queue_stop_reason reason)
575{
576 ieee80211_stop_queues_by_reason(&local->hw,
577 ieee80211_get_vif_queues(local, sdata),
578 reason, true);
579}
580
581void ieee80211_wake_vif_queues(struct ieee80211_local *local,
582 struct ieee80211_sub_if_data *sdata,
583 enum queue_stop_reason reason)
584{
585 ieee80211_wake_queues_by_reason(&local->hw,
586 ieee80211_get_vif_queues(local, sdata),
587 reason, true);
588}
589
3384d757
AN		 590static void __iterate_interfaces(struct ieee80211_local *local,
591 u32 iter_flags,
592 void (*iterator)(void *data, u8 *mac,
593 struct ieee80211_vif *vif),
594 void *data)
dabeb344 595{
dabeb344 596 struct ieee80211_sub_if_data *sdata;
3384d757 597 bool active_only = iter_flags & IEEE80211_IFACE_ITER_ACTIVE;
dabeb344 598
c7c71066 599 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
2f561feb 600 switch (sdata->vif.type) {
05c914fe 601 case NL80211_IFTYPE_MONITOR:
d8212184 602 if (!(sdata->u.mntr.flags & MONITOR_FLAG_ACTIVE))
31eba5bc
FF		 603 continue;
604 break;
05c914fe 605 case NL80211_IFTYPE_AP_VLAN:
2f561feb 606 continue;
2ca27bcf 607 default:
2f561feb
ID		 608 break;
609 }
8b2c9824 610 if (!(iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL) &&
3384d757 611 active_only && !(sdata->flags & IEEE80211_SDATA_IN_DRIVER))
8b2c9824 612 continue;
3384d757 613 if (ieee80211_sdata_running(sdata) || !active_only)
47846c9b 614 iterator(data, sdata->vif.addr,
2f561feb
ID		 615 &sdata->vif);
616 }
617
c7c71066
JB		 618 sdata = rcu_dereference_check(local->monitor_sdata,
619 lockdep_is_held(&local->iflist_mtx) ||
620 lockdep_rtnl_is_held());
8b2c9824 621 if (sdata &&
3384d757 622 (iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL || !active_only ||
8b2c9824 623 sdata->flags & IEEE80211_SDATA_IN_DRIVER))
685fb72b 624 iterator(data, sdata->vif.addr, &sdata->vif);
c7c71066 625}
685fb72b 626
3384d757 627void ieee80211_iterate_interfaces(
c7c71066
JB		 628 struct ieee80211_hw *hw, u32 iter_flags,
629 void (*iterator)(void *data, u8 *mac,
630 struct ieee80211_vif *vif),
631 void *data)
632{
633 struct ieee80211_local *local = hw_to_local(hw);
634
635 mutex_lock(&local->iflist_mtx);
3384d757 636 __iterate_interfaces(local, iter_flags, iterator, data);
c771c9d8 637 mutex_unlock(&local->iflist_mtx);
2f561feb 638}
3384d757 639EXPORT_SYMBOL_GPL(ieee80211_iterate_interfaces);
2f561feb
ID		 640
641void ieee80211_iterate_active_interfaces_atomic(
8b2c9824 642 struct ieee80211_hw *hw, u32 iter_flags,
2f561feb
ID		 643 void (*iterator)(void *data, u8 *mac,
644 struct ieee80211_vif *vif),
645 void *data)
646{
647 struct ieee80211_local *local = hw_to_local(hw);
2f561feb 648
e38bad47 649 rcu_read_lock();
3384d757
AN		 650 __iterate_interfaces(local, iter_flags | IEEE80211_IFACE_ITER_ACTIVE,
651 iterator, data);
c7c71066
JB		 652 rcu_read_unlock();
653}
654EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_atomic);
dabeb344 655
c7c71066
JB		 656void ieee80211_iterate_active_interfaces_rtnl(
657 struct ieee80211_hw *hw, u32 iter_flags,
658 void (*iterator)(void *data, u8 *mac,
659 struct ieee80211_vif *vif),
660 void *data)
661{
662 struct ieee80211_local *local = hw_to_local(hw);
e38bad47 663
c7c71066 664 ASSERT_RTNL();
685fb72b 665
3384d757
AN		 666 __iterate_interfaces(local, iter_flags | IEEE80211_IFACE_ITER_ACTIVE,
667 iterator, data);
dabeb344 668}
c7c71066 669EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_rtnl);
37ffc8da 670
0fc1e049
AN		 671static void __iterate_stations(struct ieee80211_local *local,
672 void (*iterator)(void *data,
673 struct ieee80211_sta *sta),
674 void *data)
675{
676 struct sta_info *sta;
677
678 list_for_each_entry_rcu(sta, &local->sta_list, list) {
679 if (!sta->uploaded)
680 continue;
681
682 iterator(data, &sta->sta);
683 }
684}
685
686void ieee80211_iterate_stations_atomic(struct ieee80211_hw *hw,
687 void (*iterator)(void *data,
688 struct ieee80211_sta *sta),
689 void *data)
690{
691 struct ieee80211_local *local = hw_to_local(hw);
692
693 rcu_read_lock();
694 __iterate_stations(local, iterator, data);
695 rcu_read_unlock();
696}
697EXPORT_SYMBOL_GPL(ieee80211_iterate_stations_atomic);
698
ad7e718c
JB		 699struct ieee80211_vif *wdev_to_ieee80211_vif(struct wireless_dev *wdev)
700{
701 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
702
703 if (!ieee80211_sdata_running(sdata) ||
704 !(sdata->flags & IEEE80211_SDATA_IN_DRIVER))
705 return NULL;
706 return &sdata->vif;
707}
708EXPORT_SYMBOL_GPL(wdev_to_ieee80211_vif);
709
dc5a1ad7
EG		 710struct wireless_dev *ieee80211_vif_to_wdev(struct ieee80211_vif *vif)
711{
6513e98e
JB		 712 struct ieee80211_sub_if_data *sdata;
713
714 if (!vif)
715 return NULL;
716
717 sdata = vif_to_sdata(vif);
dc5a1ad7
EG		 718
719 if (!ieee80211_sdata_running(sdata) ||
720 !(sdata->flags & IEEE80211_SDATA_IN_DRIVER))
721 return NULL;
722
723 return &sdata->wdev;
724}
725EXPORT_SYMBOL_GPL(ieee80211_vif_to_wdev);
726
42935eca
LR		 727/*
728 * Nothing should have been stuffed into the workqueue during
4afaff17
EG		 729 * the suspend->resume cycle. Since we can't check each caller
730 * of this function if we are already quiescing / suspended,
731 * check here and don't WARN since this can actually happen when
732 * the rx path (for example) is racing against __ieee80211_suspend
733 * and suspending / quiescing was set after the rx path checked
734 * them.
42935eca
LR		 735 */
736static bool ieee80211_can_queue_work(struct ieee80211_local *local)
737{
4afaff17
EG		 738 if (local->quiescing || (local->suspended && !local->resuming)) {
739 pr_warn("queueing ieee80211 work while going to suspend\n");
ceb99fe0 740 return false;
4afaff17 741 }
42935eca
LR		 742
743 return true;
744}
745
746void ieee80211_queue_work(struct ieee80211_hw *hw, struct work_struct *work)
747{
748 struct ieee80211_local *local = hw_to_local(hw);
749
750 if (!ieee80211_can_queue_work(local))
751 return;
752
753 queue_work(local->workqueue, work);
754}
755EXPORT_SYMBOL(ieee80211_queue_work);
756
757void ieee80211_queue_delayed_work(struct ieee80211_hw *hw,
758 struct delayed_work *dwork,
759 unsigned long delay)
760{
761 struct ieee80211_local *local = hw_to_local(hw);
762
763 if (!ieee80211_can_queue_work(local))
764 return;
765
766 queue_delayed_work(local->workqueue, dwork, delay);
767}
768EXPORT_SYMBOL(ieee80211_queue_delayed_work);
769
35d865af 770u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
dd76986b
JB		 771 struct ieee802_11_elems *elems,
772 u64 filter, u32 crc)
773{
774 size_t left = len;
35d865af 775 const u8 *pos = start;
dd76986b 776 bool calc_crc = filter != 0;
fcff4f10 777 DECLARE_BITMAP(seen_elems, 256);
b2e506bf 778 const u8 *ie;
dd76986b 779
fcff4f10 780 bitmap_zero(seen_elems, 256);
dd76986b
JB		 781 memset(elems, 0, sizeof(*elems));
782 elems->ie_start = start;
783 elems->total_len = len;
784
785 while (left >= 2) {
786 u8 id, elen;
fcff4f10 787 bool elem_parse_failed;
dd76986b
JB		 788
789 id = *pos++;
790 elen = *pos++;
791 left -= 2;
792
fcff4f10
PS		 793 if (elen > left) {
794 elems->parse_error = true;
dd76986b 795 break;
fcff4f10
PS		 796 }
797
9690fb16
JB		 798 switch (id) {
799 case WLAN_EID_SSID:
800 case WLAN_EID_SUPP_RATES:
801 case WLAN_EID_FH_PARAMS:
802 case WLAN_EID_DS_PARAMS:
803 case WLAN_EID_CF_PARAMS:
804 case WLAN_EID_TIM:
805 case WLAN_EID_IBSS_PARAMS:
806 case WLAN_EID_CHALLENGE:
807 case WLAN_EID_RSN:
808 case WLAN_EID_ERP_INFO:
809 case WLAN_EID_EXT_SUPP_RATES:
810 case WLAN_EID_HT_CAPABILITY:
811 case WLAN_EID_HT_OPERATION:
812 case WLAN_EID_VHT_CAPABILITY:
813 case WLAN_EID_VHT_OPERATION:
814 case WLAN_EID_MESH_ID:
815 case WLAN_EID_MESH_CONFIG:
816 case WLAN_EID_PEER_MGMT:
817 case WLAN_EID_PREQ:
818 case WLAN_EID_PREP:
819 case WLAN_EID_PERR:
820 case WLAN_EID_RANN:
821 case WLAN_EID_CHANNEL_SWITCH:
822 case WLAN_EID_EXT_CHANSWITCH_ANN:
823 case WLAN_EID_COUNTRY:
824 case WLAN_EID_PWR_CONSTRAINT:
825 case WLAN_EID_TIMEOUT_INTERVAL:
85220d71 826 case WLAN_EID_SECONDARY_CHANNEL_OFFSET:
b2e506bf 827 case WLAN_EID_WIDE_BW_CHANNEL_SWITCH:
8f2535b9 828 case WLAN_EID_CHAN_SWITCH_PARAM:
9041c1fa 829 case WLAN_EID_EXT_CAPABILITY:
53837584
AN		 830 case WLAN_EID_CHAN_SWITCH_TIMING:
831 case WLAN_EID_LINK_ID:
e38a017b 832 case WLAN_EID_BSS_MAX_IDLE_PERIOD:
b2e506bf
JB		 833 /*
834 * not listing WLAN_EID_CHANNEL_SWITCH_WRAPPER -- it seems possible
835 * that if the content gets bigger it might be needed more than once
836 */
9690fb16
JB		 837 if (test_bit(id, seen_elems)) {
838 elems->parse_error = true;
839 left -= elen;
840 pos += elen;
841 continue;
842 }
843 break;
fcff4f10 844 }
dd76986b
JB		 845
846 if (calc_crc && id < 64 && (filter & (1ULL << id)))
847 crc = crc32_be(crc, pos - 2, elen + 2);
848
fcff4f10
PS		 849 elem_parse_failed = false;
850
dd76986b 851 switch (id) {
53837584
AN		 852 case WLAN_EID_LINK_ID:
853 if (elen + 2 != sizeof(struct ieee80211_tdls_lnkie)) {
854 elem_parse_failed = true;
855 break;
856 }
857 elems->lnk_id = (void *)(pos - 2);
858 break;
859 case WLAN_EID_CHAN_SWITCH_TIMING:
860 if (elen != sizeof(struct ieee80211_ch_switch_timing)) {
861 elem_parse_failed = true;
862 break;
863 }
864 elems->ch_sw_timing = (void *)pos;
865 break;
9041c1fa
AN		 866 case WLAN_EID_EXT_CAPABILITY:
867 elems->ext_capab = pos;
868 elems->ext_capab_len = elen;
869 break;
dd76986b
JB		 870 case WLAN_EID_SSID:
871 elems->ssid = pos;
872 elems->ssid_len = elen;
873 break;
874 case WLAN_EID_SUPP_RATES:
875 elems->supp_rates = pos;
876 elems->supp_rates_len = elen;
877 break;
dd76986b 878 case WLAN_EID_DS_PARAMS:
1cd8e88e
JB		 879 if (elen >= 1)
880 elems->ds_params = pos;
881 else
882 elem_parse_failed = true;
dd76986b 883 break;
dd76986b
JB		 884 case WLAN_EID_TIM:
885 if (elen >= sizeof(struct ieee80211_tim_ie)) {
886 elems->tim = (void *)pos;
887 elems->tim_len = elen;
fcff4f10
PS		 888 } else
889 elem_parse_failed = true;
dd76986b 890 break;
dd76986b
JB		 891 case WLAN_EID_CHALLENGE:
892 elems->challenge = pos;
893 elems->challenge_len = elen;
894 break;
895 case WLAN_EID_VENDOR_SPECIFIC:
896 if (elen >= 4 && pos[0] == 0x00 && pos[1] == 0x50 &&
897 pos[2] == 0xf2) {
898 /* Microsoft OUI (00:50:F2) */
899
900 if (calc_crc)
901 crc = crc32_be(crc, pos - 2, elen + 2);
902
441a33ba 903 if (elen >= 5 && pos[3] == 2) {
dd76986b
JB		 904 /* OUI Type 2 - WMM IE */
905 if (pos[4] == 0) {
906 elems->wmm_info = pos;
907 elems->wmm_info_len = elen;
908 } else if (pos[4] == 1) {
909 elems->wmm_param = pos;
910 elems->wmm_param_len = elen;
911 }
912 }
913 }
914 break;
915 case WLAN_EID_RSN:
916 elems->rsn = pos;
917 elems->rsn_len = elen;
918 break;
919 case WLAN_EID_ERP_INFO:
1946bed9
JB		 920 if (elen >= 1)
921 elems->erp_info = pos;
922 else
923 elem_parse_failed = true;
dd76986b
JB		 924 break;
925 case WLAN_EID_EXT_SUPP_RATES:
926 elems->ext_supp_rates = pos;
927 elems->ext_supp_rates_len = elen;
928 break;
929 case WLAN_EID_HT_CAPABILITY:
930 if (elen >= sizeof(struct ieee80211_ht_cap))
931 elems->ht_cap_elem = (void *)pos;
fcff4f10
PS		 932 else
933 elem_parse_failed = true;
dd76986b 934 break;
074d46d1
JB		 935 case WLAN_EID_HT_OPERATION:
936 if (elen >= sizeof(struct ieee80211_ht_operation))
937 elems->ht_operation = (void *)pos;
fcff4f10
PS		 938 else
939 elem_parse_failed = true;
dd76986b 940 break;
818255ea
MP		 941 case WLAN_EID_VHT_CAPABILITY:
942 if (elen >= sizeof(struct ieee80211_vht_cap))
943 elems->vht_cap_elem = (void *)pos;
944 else
945 elem_parse_failed = true;
946 break;
947 case WLAN_EID_VHT_OPERATION:
948 if (elen >= sizeof(struct ieee80211_vht_operation))
949 elems->vht_operation = (void *)pos;
950 else
951 elem_parse_failed = true;
952 break;
bee7f586
JB		 953 case WLAN_EID_OPMODE_NOTIF:
954 if (elen > 0)
955 elems->opmode_notif = pos;
956 else
957 elem_parse_failed = true;
958 break;
dd76986b
JB		 959 case WLAN_EID_MESH_ID:
960 elems->mesh_id = pos;
961 elems->mesh_id_len = elen;
962 break;
963 case WLAN_EID_MESH_CONFIG:
964 if (elen >= sizeof(struct ieee80211_meshconf_ie))
965 elems->mesh_config = (void *)pos;
fcff4f10
PS		 966 else
967 elem_parse_failed = true;
dd76986b
JB		 968 break;
969 case WLAN_EID_PEER_MGMT:
970 elems->peering = pos;
971 elems->peering_len = elen;
972 break;
3f52b7e3
MP		 973 case WLAN_EID_MESH_AWAKE_WINDOW:
974 if (elen >= 2)
975 elems->awake_window = (void *)pos;
976 break;
dd76986b
JB		 977 case WLAN_EID_PREQ:
978 elems->preq = pos;
979 elems->preq_len = elen;
980 break;
981 case WLAN_EID_PREP:
982 elems->prep = pos;
983 elems->prep_len = elen;
984 break;
985 case WLAN_EID_PERR:
986 elems->perr = pos;
987 elems->perr_len = elen;
988 break;
989 case WLAN_EID_RANN:
990 if (elen >= sizeof(struct ieee80211_rann_ie))
991 elems->rann = (void *)pos;
fcff4f10
PS		 992 else
993 elem_parse_failed = true;
dd76986b
JB		 994 break;
995 case WLAN_EID_CHANNEL_SWITCH:
5bc1420b
JB		 996 if (elen != sizeof(struct ieee80211_channel_sw_ie)) {
997 elem_parse_failed = true;
998 break;
999 }
1000 elems->ch_switch_ie = (void *)pos;
dd76986b 1001 break;
b4f286a1
JB		 1002 case WLAN_EID_EXT_CHANSWITCH_ANN:
1003 if (elen != sizeof(struct ieee80211_ext_chansw_ie)) {
1004 elem_parse_failed = true;
1005 break;
1006 }
1007 elems->ext_chansw_ie = (void *)pos;
1008 break;
85220d71
JB		 1009 case WLAN_EID_SECONDARY_CHANNEL_OFFSET:
1010 if (elen != sizeof(struct ieee80211_sec_chan_offs_ie)) {
1011 elem_parse_failed = true;
1012 break;
1013 }
1014 elems->sec_chan_offs = (void *)pos;
1015 break;
8f2535b9
CYY		 1016 case WLAN_EID_CHAN_SWITCH_PARAM:
1017 if (elen !=
1018 sizeof(*elems->mesh_chansw_params_ie)) {
1019 elem_parse_failed = true;
1020 break;
1021 }
1022 elems->mesh_chansw_params_ie = (void *)pos;
1023 break;
b2e506bf
JB		 1024 case WLAN_EID_WIDE_BW_CHANNEL_SWITCH:
1025 if (!action ||
1026 elen != sizeof(*elems->wide_bw_chansw_ie)) {
1027 elem_parse_failed = true;
1028 break;
1029 }
1030 elems->wide_bw_chansw_ie = (void *)pos;
1031 break;
1032 case WLAN_EID_CHANNEL_SWITCH_WRAPPER:
1033 if (action) {
1034 elem_parse_failed = true;
1035 break;
1036 }
1037 /*
1038 * This is a bit tricky, but as we only care about
1039 * the wide bandwidth channel switch element, so
1040 * just parse it out manually.
1041 */
1042 ie = cfg80211_find_ie(WLAN_EID_WIDE_BW_CHANNEL_SWITCH,
1043 pos, elen);
1044 if (ie) {
1045 if (ie[1] == sizeof(*elems->wide_bw_chansw_ie))
1046 elems->wide_bw_chansw_ie =
1047 (void *)(ie + 2);
1048 else
1049 elem_parse_failed = true;
1050 }
1051 break;
dd76986b
JB		 1052 case WLAN_EID_COUNTRY:
1053 elems->country_elem = pos;
1054 elems->country_elem_len = elen;
1055 break;
1056 case WLAN_EID_PWR_CONSTRAINT:
761a48d2
JB		 1057 if (elen != 1) {
1058 elem_parse_failed = true;
1059 break;
1060 }
dd76986b 1061 elems->pwr_constr_elem = pos;
dd76986b 1062 break;
c8d65917
SG		 1063 case WLAN_EID_CISCO_VENDOR_SPECIFIC:
1064 /* Lots of different options exist, but we only care
1065 * about the Dynamic Transmit Power Control element.
1066 * First check for the Cisco OUI, then for the DTPC
1067 * tag (0x00).
1068 */
1069 if (elen < 4) {
1070 elem_parse_failed = true;
1071 break;
1072 }
1073
1074 if (pos[0] != 0x00 || pos[1] != 0x40 ||
1075 pos[2] != 0x96 || pos[3] != 0x00)
1076 break;
1077
1078 if (elen != 6) {
1079 elem_parse_failed = true;
1080 break;
1081 }
1082
1083 if (calc_crc)
1084 crc = crc32_be(crc, pos - 2, elen + 2);
1085
1086 elems->cisco_dtpc_elem = pos;
1087 break;
dd76986b 1088 case WLAN_EID_TIMEOUT_INTERVAL:
79ba1d89
JB		 1089 if (elen >= sizeof(struct ieee80211_timeout_interval_ie))
1090 elems->timeout_int = (void *)pos;
1091 else
1092 elem_parse_failed = true;
dd76986b 1093 break;
e38a017b
AS		 1094 case WLAN_EID_BSS_MAX_IDLE_PERIOD:
1095 if (elen >= sizeof(*elems->max_idle_period_ie))
1096 elems->max_idle_period_ie = (void *)pos;
1097 break;
41cbb0f5
LC		 1098 case WLAN_EID_EXTENSION:
1099 if (pos[0] == WLAN_EID_EXT_HE_MU_EDCA &&
1100 elen >= (sizeof(*elems->mu_edca_param_set) + 1)) {
1101 elems->mu_edca_param_set = (void *)&pos[1];
1102 } else if (pos[0] == WLAN_EID_EXT_HE_CAPABILITY) {
1103 elems->he_cap = (void *)&pos[1];
1104 elems->he_cap_len = elen - 1;
1105 } else if (pos[0] == WLAN_EID_EXT_HE_OPERATION &&
1106 elen >= sizeof(*elems->he_operation) &&
1107 elen >= ieee80211_he_oper_size(&pos[1])) {
1108 elems->he_operation = (void *)&pos[1];
1109 } else if (pos[0] == WLAN_EID_EXT_UORA && elen >= 1) {
1110 elems->uora_element = (void *)&pos[1];
1111 }
1112 break;
dd76986b
JB		 1113 default:
1114 break;
1115 }
1116
fcff4f10
PS		 1117 if (elem_parse_failed)
1118 elems->parse_error = true;
1119 else
5df45690 1120 __set_bit(id, seen_elems);
fcff4f10 1121
dd76986b
JB		 1122 left -= elen;
1123 pos += elen;
1124 }
1125
fcff4f10
PS		 1126 if (left != 0)
1127 elems->parse_error = true;
1128
dd76986b
JB		 1129 return crc;
1130}
1131
e552af05
HD		 1132void ieee80211_regulatory_limit_wmm_params(struct ieee80211_sub_if_data *sdata,
1133 struct ieee80211_tx_queue_params
1134 *qparam, int ac)
1135{
1136 struct ieee80211_chanctx_conf *chanctx_conf;
1137 const struct ieee80211_reg_rule *rrule;
1138 struct ieee80211_wmm_ac *wmm_ac;
1139 u16 center_freq = 0;
1140
1141 if (sdata->vif.type != NL80211_IFTYPE_AP &&
1142 sdata->vif.type != NL80211_IFTYPE_STATION)
1143 return;
1144
1145 rcu_read_lock();
1146 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1147 if (chanctx_conf)
1148 center_freq = chanctx_conf->def.chan->center_freq;
1149
1150 if (!center_freq) {
1151 rcu_read_unlock();
1152 return;
1153 }
1154
1155 rrule = freq_reg_info(sdata->wdev.wiphy, MHZ_TO_KHZ(center_freq));
1156
1157 if (IS_ERR_OR_NULL(rrule) || !rrule->wmm_rule) {
1158 rcu_read_unlock();
1159 return;
1160 }
1161
1162 if (sdata->vif.type == NL80211_IFTYPE_AP)
1163 wmm_ac = &rrule->wmm_rule->ap[ac];
1164 else
1165 wmm_ac = &rrule->wmm_rule->client[ac];
1166 qparam->cw_min = max_t(u16, qparam->cw_min, wmm_ac->cw_min);
1167 qparam->cw_max = max_t(u16, qparam->cw_max, wmm_ac->cw_max);
1168 qparam->aifs = max_t(u8, qparam->aifs, wmm_ac->aifsn);
1169 qparam->txop = !qparam->txop ? wmm_ac->cot / 32 :
1170 min_t(u16, qparam->txop, wmm_ac->cot / 32);
1171 rcu_read_unlock();
1172}
1173
3abead59 1174void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
cec66283 1175 bool bss_notify, bool enable_qos)
5825fe10
JB		 1176{
1177 struct ieee80211_local *local = sdata->local;
1178 struct ieee80211_tx_queue_params qparam;
55de908a 1179 struct ieee80211_chanctx_conf *chanctx_conf;
54bcbc69 1180 int ac;
cec66283 1181 bool use_11b;
239281f8 1182 bool is_ocb; /* Use another EDCA parameters if dot11OCBActivated=true */
aa837e1d 1183 int aCWmin, aCWmax;
5825fe10
JB		 1184
1185 if (!local->ops->conf_tx)
1186 return;
1187
54bcbc69
JB		 1188 if (local->hw.queues < IEEE80211_NUM_ACS)
1189 return;
1190
5825fe10
JB		 1191 memset(&qparam, 0, sizeof(qparam));
1192
55de908a
JB		 1193 rcu_read_lock();
1194 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1195 use_11b = (chanctx_conf &&
57fbcce3 1196 chanctx_conf->def.chan->band == NL80211_BAND_2GHZ) &&
aa837e1d 1197 !(sdata->flags & IEEE80211_SDATA_OPERATING_GMODE);
55de908a 1198 rcu_read_unlock();
5825fe10 1199
239281f8
RL		 1200 is_ocb = (sdata->vif.type == NL80211_IFTYPE_OCB);
1201
1f4ffde8
FZ		 1202 /* Set defaults according to 802.11-2007 Table 7-37 */
1203 aCWmax = 1023;
1204 if (use_11b)
1205 aCWmin = 31;
1206 else
1207 aCWmin = 15;
1208
1209 /* Confiure old 802.11b/g medium access rules. */
1210 qparam.cw_max = aCWmax;
1211 qparam.cw_min = aCWmin;
1212 qparam.txop = 0;
1213 qparam.aifs = 2;
aa837e1d 1214
1f4ffde8
FZ		 1215 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
1216 /* Update if QoS is enabled. */
a8ce8544
SG		 1217 if (enable_qos) {
1218 switch (ac) {
1219 case IEEE80211_AC_BK:
1220 qparam.cw_max = aCWmax;
1221 qparam.cw_min = aCWmin;
1222 qparam.txop = 0;
239281f8
RL		 1223 if (is_ocb)
1224 qparam.aifs = 9;
1225 else
1226 qparam.aifs = 7;
a8ce8544
SG		 1227 break;
1228 /* never happens but let's not leave undefined */
1229 default:
1230 case IEEE80211_AC_BE:
1231 qparam.cw_max = aCWmax;
1232 qparam.cw_min = aCWmin;
1233 qparam.txop = 0;
239281f8
RL		 1234 if (is_ocb)
1235 qparam.aifs = 6;
1236 else
1237 qparam.aifs = 3;
a8ce8544
SG		 1238 break;
1239 case IEEE80211_AC_VI:
1240 qparam.cw_max = aCWmin;
1241 qparam.cw_min = (aCWmin + 1) / 2 - 1;
239281f8
RL		 1242 if (is_ocb)
1243 qparam.txop = 0;
1244 else if (use_11b)
a8ce8544
SG		 1245 qparam.txop = 6016/32;
1246 else
1247 qparam.txop = 3008/32;
239281f8
RL		 1248
1249 if (is_ocb)
1250 qparam.aifs = 3;
1251 else
1252 qparam.aifs = 2;
a8ce8544
SG		 1253 break;
1254 case IEEE80211_AC_VO:
1255 qparam.cw_max = (aCWmin + 1) / 2 - 1;
1256 qparam.cw_min = (aCWmin + 1) / 4 - 1;
239281f8
RL		 1257 if (is_ocb)
1258 qparam.txop = 0;
1259 else if (use_11b)
a8ce8544
SG		 1260 qparam.txop = 3264/32;
1261 else
1262 qparam.txop = 1504/32;
1263 qparam.aifs = 2;
1264 break;
1265 }
aa837e1d 1266 }
e552af05 1267 ieee80211_regulatory_limit_wmm_params(sdata, &qparam, ac);
5825fe10 1268
ab13315a
KV		 1269 qparam.uapsd = false;
1270
54bcbc69
JB		 1271 sdata->tx_conf[ac] = qparam;
1272 drv_conf_tx(local, sdata, ac, &qparam);
aa837e1d 1273 }
e1b3ec1a 1274
f142c6b9 1275 if (sdata->vif.type != NL80211_IFTYPE_MONITOR &&
708d50ed
AB		 1276 sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE &&
1277 sdata->vif.type != NL80211_IFTYPE_NAN) {
a8ce8544 1278 sdata->vif.bss_conf.qos = enable_qos;
3abead59
JB		 1279 if (bss_notify)
1280 ieee80211_bss_info_change_notify(sdata,
1281 BSS_CHANGED_QOS);
d9734979 1282 }
5825fe10 1283}
e50db65c 1284
46900298 1285void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
700e8ea6 1286 u16 transaction, u16 auth_alg, u16 status,
4a3cb702 1287 const u8 *extra, size_t extra_len, const u8 *da,
1672c0e3
JB		 1288 const u8 *bssid, const u8 *key, u8 key_len, u8 key_idx,
1289 u32 tx_flags)
46900298
JB		 1290{
1291 struct ieee80211_local *local = sdata->local;
1292 struct sk_buff *skb;
1293 struct ieee80211_mgmt *mgmt;
fffd0934 1294 int err;
46900298 1295
15e230ab 1296 /* 24 + 6 = header + auth_algo + auth_transaction + status_code */
744462a9
MS		 1297 skb = dev_alloc_skb(local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN +
1298 24 + 6 + extra_len + IEEE80211_WEP_ICV_LEN);
d15b8459 1299 if (!skb)
46900298 1300 return;
d15b8459 1301
744462a9 1302 skb_reserve(skb, local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN);
46900298 1303
b080db58 1304 mgmt = skb_put_zero(skb, 24 + 6);
46900298
JB		 1305 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
1306 IEEE80211_STYPE_AUTH);
efa6a09d 1307 memcpy(mgmt->da, da, ETH_ALEN);
47846c9b 1308 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
46900298
JB		 1309 memcpy(mgmt->bssid, bssid, ETH_ALEN);
1310 mgmt->u.auth.auth_alg = cpu_to_le16(auth_alg);
1311 mgmt->u.auth.auth_transaction = cpu_to_le16(transaction);
700e8ea6 1312 mgmt->u.auth.status_code = cpu_to_le16(status);
46900298 1313 if (extra)
59ae1d12 1314 skb_put_data(skb, extra, extra_len);
46900298 1315
fffd0934
JB		 1316 if (auth_alg == WLAN_AUTH_SHARED_KEY && transaction == 3) {
1317 mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
1318 err = ieee80211_wep_encrypt(local, skb, key, key_len, key_idx);
1319 WARN_ON(err);
1320 }
1321
1672c0e3
JB		 1322 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT |
1323 tx_flags;
62ae67be 1324 ieee80211_tx_skb(sdata, skb);
46900298
JB		 1325}
1326
6ae16775
AQ		 1327void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
1328 const u8 *bssid, u16 stype, u16 reason,
1329 bool send_frame, u8 *frame_buf)
1330{
1331 struct ieee80211_local *local = sdata->local;
1332 struct sk_buff *skb;
1333 struct ieee80211_mgmt *mgmt = (void *)frame_buf;
1334
1335 /* build frame */
1336 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | stype);
1337 mgmt->duration = 0; /* initialize only */
1338 mgmt->seq_ctrl = 0; /* initialize only */
1339 memcpy(mgmt->da, bssid, ETH_ALEN);
1340 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
1341 memcpy(mgmt->bssid, bssid, ETH_ALEN);
1342 /* u.deauth.reason_code == u.disassoc.reason_code */
1343 mgmt->u.deauth.reason_code = cpu_to_le16(reason);
1344
1345 if (send_frame) {
1346 skb = dev_alloc_skb(local->hw.extra_tx_headroom +
1347 IEEE80211_DEAUTH_FRAME_LEN);
1348 if (!skb)
1349 return;
1350
1351 skb_reserve(skb, local->hw.extra_tx_headroom);
1352
1353 /* copy in frame */
59ae1d12 1354 skb_put_data(skb, mgmt, IEEE80211_DEAUTH_FRAME_LEN);
6ae16775
AQ		 1355
1356 if (sdata->vif.type != NL80211_IFTYPE_STATION ||
1357 !(sdata->u.mgd.flags & IEEE80211_STA_MFP_ENABLED))
1358 IEEE80211_SKB_CB(skb)->flags |=
1359 IEEE80211_TX_INTFL_DONT_ENCRYPT;
1360
1361 ieee80211_tx_skb(sdata, skb);
1362 }
1363}
1364
c56ef672
DS		 1365static int ieee80211_build_preq_ies_band(struct ieee80211_local *local,
1366 u8 *buffer, size_t buffer_len,
1367 const u8 *ie, size_t ie_len,
57fbcce3 1368 enum nl80211_band band,
c56ef672
DS		 1369 u32 rate_mask,
1370 struct cfg80211_chan_def *chandef,
00387f32 1371 size_t *offset, u32 flags)
de95a54b
JB		 1372{
1373 struct ieee80211_supported_band *sband;
41cbb0f5 1374 const struct ieee80211_sta_he_cap *he_cap;
c604b9f2 1375 u8 *pos = buffer, *end = buffer + buffer_len;
c56ef672 1376 size_t noffset;
8e664fb3 1377 int supp_rates_len, i;
8dcb2003
JM		 1378 u8 rates[32];
1379 int num_rates;
1380 int ext_rates_len;
2103dec1
SW		 1381 int shift;
1382 u32 rate_flags;
40a11ca8 1383 bool have_80mhz = false;
de95a54b 1384
c56ef672
DS		 1385 *offset = 0;
1386
4d36ec58 1387 sband = local->hw.wiphy->bands[band];
d811b3d5
AN		 1388 if (WARN_ON_ONCE(!sband))
1389 return 0;
de95a54b 1390
2103dec1
SW		 1391 rate_flags = ieee80211_chandef_rate_flags(chandef);
1392 shift = ieee80211_chandef_get_shift(chandef);
1393
8dcb2003
JM		 1394 num_rates = 0;
1395 for (i = 0; i < sband->n_bitrates; i++) {
1396 if ((BIT(i) & rate_mask) == 0)
1397 continue; /* skip rate */
2103dec1
SW		 1398 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
1399 continue;
1400
1401 rates[num_rates++] =
1402 (u8) DIV_ROUND_UP(sband->bitrates[i].bitrate,
1403 (1 << shift) * 5);
8dcb2003
JM		 1404 }
1405
1406 supp_rates_len = min_t(int, num_rates, 8);
8e664fb3 1407
c604b9f2
JB		 1408 if (end - pos < 2 + supp_rates_len)
1409 goto out_err;
de95a54b 1410 *pos++ = WLAN_EID_SUPP_RATES;
8e664fb3 1411 *pos++ = supp_rates_len;
8dcb2003
JM		 1412 memcpy(pos, rates, supp_rates_len);
1413 pos += supp_rates_len;
8e664fb3
JB		 1414
1415 /* insert "request information" if in custom IEs */
1416 if (ie && ie_len) {
1417 static const u8 before_extrates[] = {
1418 WLAN_EID_SSID,
1419 WLAN_EID_SUPP_RATES,
1420 WLAN_EID_REQUEST,
1421 };
1422 noffset = ieee80211_ie_split(ie, ie_len,
1423 before_extrates,
1424 ARRAY_SIZE(before_extrates),
c56ef672
DS		 1425 *offset);
1426 if (end - pos < noffset - *offset)
c604b9f2 1427 goto out_err;
c56ef672
DS		 1428 memcpy(pos, ie + *offset, noffset - *offset);
1429 pos += noffset - *offset;
1430 *offset = noffset;
8e664fb3
JB		 1431 }
1432
8dcb2003
JM		 1433 ext_rates_len = num_rates - supp_rates_len;
1434 if (ext_rates_len > 0) {
c604b9f2
JB		 1435 if (end - pos < 2 + ext_rates_len)
1436 goto out_err;
8e664fb3 1437 *pos++ = WLAN_EID_EXT_SUPP_RATES;
8dcb2003
JM		 1438 *pos++ = ext_rates_len;
1439 memcpy(pos, rates + supp_rates_len, ext_rates_len);
1440 pos += ext_rates_len;
8e664fb3
JB		 1441 }
1442
57fbcce3 1443 if (chandef->chan && sband->band == NL80211_BAND_2GHZ) {
c604b9f2
JB		 1444 if (end - pos < 3)
1445 goto out_err;
651b5225
JM		 1446 *pos++ = WLAN_EID_DS_PARAMS;
1447 *pos++ = 1;
2103dec1
SW		 1448 *pos++ = ieee80211_frequency_to_channel(
1449 chandef->chan->center_freq);
651b5225
JM		 1450 }
1451
b9771d41
JB		 1452 if (flags & IEEE80211_PROBE_FLAG_MIN_CONTENT)
1453 goto done;
1454
8e664fb3
JB		 1455 /* insert custom IEs that go before HT */
1456 if (ie && ie_len) {
1457 static const u8 before_ht[] = {
a7f26d80
JB		 1458 /*
1459 * no need to list the ones split off already
1460 * (or generated here)
1461 */
8e664fb3
JB		 1462 WLAN_EID_DS_PARAMS,
1463 WLAN_EID_SUPPORTED_REGULATORY_CLASSES,
1464 };
1465 noffset = ieee80211_ie_split(ie, ie_len,
1466 before_ht, ARRAY_SIZE(before_ht),
c56ef672
DS		 1467 *offset);
1468 if (end - pos < noffset - *offset)
c604b9f2 1469 goto out_err;
c56ef672
DS		 1470 memcpy(pos, ie + *offset, noffset - *offset);
1471 pos += noffset - *offset;
1472 *offset = noffset;
de95a54b
JB		 1473 }
1474
c604b9f2
JB		 1475 if (sband->ht_cap.ht_supported) {
1476 if (end - pos < 2 + sizeof(struct ieee80211_ht_cap))
1477 goto out_err;
ef96a842
BG		 1478 pos = ieee80211_ie_build_ht_cap(pos, &sband->ht_cap,
1479 sband->ht_cap.cap);
c604b9f2 1480 }
5ef2d41a 1481
4d952300 1482 /* insert custom IEs that go before VHT */
8e664fb3 1483 if (ie && ie_len) {
4d952300 1484 static const u8 before_vht[] = {
a7f26d80
JB		 1485 /*
1486 * no need to list the ones split off already
1487 * (or generated here)
1488 */
4d952300
JB		 1489 WLAN_EID_BSS_COEX_2040,
1490 WLAN_EID_EXT_CAPABILITY,
1491 WLAN_EID_SSID_LIST,
1492 WLAN_EID_CHANNEL_USAGE,
1493 WLAN_EID_INTERWORKING,
b44eebea 1494 WLAN_EID_MESH_ID,
a7f26d80 1495 /* 60 GHz (Multi-band, DMG, MMS) can't happen */
4d952300
JB		 1496 };
1497 noffset = ieee80211_ie_split(ie, ie_len,
1498 before_vht, ARRAY_SIZE(before_vht),
c56ef672
DS		 1499 *offset);
1500 if (end - pos < noffset - *offset)
c604b9f2 1501 goto out_err;
c56ef672
DS		 1502 memcpy(pos, ie + *offset, noffset - *offset);
1503 pos += noffset - *offset;
1504 *offset = noffset;
de95a54b
JB		 1505 }
1506
40a11ca8
JB		 1507 /* Check if any channel in this sband supports at least 80 MHz */
1508 for (i = 0; i < sband->n_channels; i++) {
fa44b988
AN		 1509 if (sband->channels[i].flags & (IEEE80211_CHAN_DISABLED |
1510 IEEE80211_CHAN_NO_80MHZ))
1511 continue;
1512
1513 have_80mhz = true;
1514 break;
40a11ca8
JB		 1515 }
1516
1517 if (sband->vht_cap.vht_supported && have_80mhz) {
c604b9f2
JB		 1518 if (end - pos < 2 + sizeof(struct ieee80211_vht_cap))
1519 goto out_err;
ba0afa2f
MP		 1520 pos = ieee80211_ie_build_vht_cap(pos, &sband->vht_cap,
1521 sband->vht_cap.cap);
c604b9f2 1522 }
ba0afa2f 1523
41cbb0f5
LC		 1524 /* insert custom IEs that go before HE */
1525 if (ie && ie_len) {
1526 static const u8 before_he[] = {
1527 /*
1528 * no need to list the ones split off before VHT
1529 * or generated here
1530 */
1531 WLAN_EID_EXTENSION, WLAN_EID_EXT_FILS_REQ_PARAMS,
1532 WLAN_EID_AP_CSN,
1533 /* TODO: add 11ah/11aj/11ak elements */
1534 };
1535 noffset = ieee80211_ie_split(ie, ie_len,
1536 before_he, ARRAY_SIZE(before_he),
1537 *offset);
1538 if (end - pos < noffset - *offset)
1539 goto out_err;
1540 memcpy(pos, ie + *offset, noffset - *offset);
1541 pos += noffset - *offset;
1542 *offset = noffset;
1543 }
1544
1545 he_cap = ieee80211_get_he_sta_cap(sband);
1546 if (he_cap) {
1547 pos = ieee80211_ie_build_he_cap(pos, he_cap, end);
1548 if (!pos)
1549 goto out_err;
1550 }
1551
1552 /*
1553 * If adding more here, adjust code in main.c
1554 * that calculates local->scan_ies_len.
1555 */
1556
c604b9f2
JB		 1557 return pos - buffer;
1558 out_err:
1559 WARN_ONCE(1, "not enough space for preq IEs\n");
b9771d41 1560 done:
de95a54b
JB		 1561 return pos - buffer;
1562}
1563
c56ef672
DS		 1564int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
1565 size_t buffer_len,
1566 struct ieee80211_scan_ies *ie_desc,
1567 const u8 *ie, size_t ie_len,
1568 u8 bands_used, u32 *rate_masks,
00387f32
JB		 1569 struct cfg80211_chan_def *chandef,
1570 u32 flags)
c56ef672
DS		 1571{
1572 size_t pos = 0, old_pos = 0, custom_ie_offset = 0;
1573 int i;
1574
1575 memset(ie_desc, 0, sizeof(*ie_desc));
1576
57fbcce3 1577 for (i = 0; i < NUM_NL80211_BANDS; i++) {
c56ef672
DS		 1578 if (bands_used & BIT(i)) {
1579 pos += ieee80211_build_preq_ies_band(local,
1580 buffer + pos,
1581 buffer_len - pos,
1582 ie, ie_len, i,
1583 rate_masks[i],
1584 chandef,
00387f32
JB		 1585 &custom_ie_offset,
1586 flags);
c56ef672
DS		 1587 ie_desc->ies[i] = buffer + old_pos;
1588 ie_desc->len[i] = pos - old_pos;
1589 old_pos = pos;
1590 }
1591 }
1592
1593 /* add any remaining custom IEs */
1594 if (ie && ie_len) {
1595 if (WARN_ONCE(buffer_len - pos < ie_len - custom_ie_offset,
1596 "not enough space for preq custom IEs\n"))
1597 return pos;
1598 memcpy(buffer + pos, ie + custom_ie_offset,
1599 ie_len - custom_ie_offset);
1600 ie_desc->common_ies = buffer + pos;
1601 ie_desc->common_ie_len = ie_len - custom_ie_offset;
1602 pos += ie_len - custom_ie_offset;
1603 }
1604
1605 return pos;
1606};
1607
a619a4c0 1608struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
a344d677
JB		 1609 const u8 *src, const u8 *dst,
1610 u32 ratemask,
6b77863b 1611 struct ieee80211_channel *chan,
a619a4c0 1612 const u8 *ssid, size_t ssid_len,
a806c558 1613 const u8 *ie, size_t ie_len,
00387f32 1614 u32 flags)
46900298
JB		 1615{
1616 struct ieee80211_local *local = sdata->local;
2103dec1 1617 struct cfg80211_chan_def chandef;
46900298
JB		 1618 struct sk_buff *skb;
1619 struct ieee80211_mgmt *mgmt;
b9a9ada1 1620 int ies_len;
57fbcce3 1621 u32 rate_masks[NUM_NL80211_BANDS] = {};
c56ef672 1622 struct ieee80211_scan_ies dummy_ie_desc;
46900298 1623
a806c558
PS		 1624 /*
1625 * Do not send DS Channel parameter for directed probe requests
1626 * in order to maximize the chance that we get a response. Some
1627 * badly-behaved APs don't respond when this parameter is included.
1628 */
2103dec1 1629 chandef.width = sdata->vif.bss_conf.chandef.width;
00387f32 1630 if (flags & IEEE80211_PROBE_FLAG_DIRECTED)
2103dec1 1631 chandef.chan = NULL;
a806c558 1632 else
2103dec1 1633 chandef.chan = chan;
651b5225 1634
a344d677
JB		 1635 skb = ieee80211_probereq_get(&local->hw, src, ssid, ssid_len,
1636 100 + ie_len);
5b2bbf75 1637 if (!skb)
b9a9ada1
JB		 1638 return NULL;
1639
c56ef672 1640 rate_masks[chan->band] = ratemask;
b9a9ada1 1641 ies_len = ieee80211_build_preq_ies(local, skb_tail_pointer(skb),
c56ef672
DS		 1642 skb_tailroom(skb), &dummy_ie_desc,
1643 ie, ie_len, BIT(chan->band),
00387f32 1644 rate_masks, &chandef, flags);
b9a9ada1 1645 skb_put(skb, ies_len);
7c12ce8b 1646
46900298 1647 if (dst) {
7c12ce8b 1648 mgmt = (struct ieee80211_mgmt *) skb->data;
46900298
JB		 1649 memcpy(mgmt->da, dst, ETH_ALEN);
1650 memcpy(mgmt->bssid, dst, ETH_ALEN);
46900298 1651 }
46900298 1652
62ae67be 1653 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
5b2bbf75 1654
a619a4c0
JO		 1655 return skb;
1656}
1657
2103dec1 1658u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
46900298 1659 struct ieee802_11_elems *elems,
57fbcce3 1660 enum nl80211_band band, u32 *basic_rates)
46900298
JB		 1661{
1662 struct ieee80211_supported_band *sband;
46900298 1663 size_t num_rates;
2103dec1
SW		 1664 u32 supp_rates, rate_flags;
1665 int i, j, shift;
21a8e9dd 1666
2103dec1 1667 sband = sdata->local->hw.wiphy->bands[band];
21a8e9dd
MSS		 1668 if (WARN_ON(!sband))
1669 return 1;
2103dec1
SW		 1670
1671 rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef);
1672 shift = ieee80211_vif_get_shift(&sdata->vif);
46900298 1673
46900298
JB		 1674 num_rates = sband->n_bitrates;
1675 supp_rates = 0;
1676 for (i = 0; i < elems->supp_rates_len +
1677 elems->ext_supp_rates_len; i++) {
1678 u8 rate = 0;
1679 int own_rate;
9ebb61a2 1680 bool is_basic;
46900298
JB		 1681 if (i < elems->supp_rates_len)
1682 rate = elems->supp_rates[i];
1683 else if (elems->ext_supp_rates)
1684 rate = elems->ext_supp_rates
1685 [i - elems->supp_rates_len];
1686 own_rate = 5 * (rate & 0x7f);
9ebb61a2
AN		 1687 is_basic = !!(rate & 0x80);
1688
1689 if (is_basic && (rate & 0x7f) == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
1690 continue;
1691
1692 for (j = 0; j < num_rates; j++) {
2103dec1
SW		 1693 int brate;
1694 if ((rate_flags & sband->bitrates[j].flags)
1695 != rate_flags)
1696 continue;
1697
1698 brate = DIV_ROUND_UP(sband->bitrates[j].bitrate,
1699 1 << shift);
1700
1701 if (brate == own_rate) {
46900298 1702 supp_rates |= BIT(j);
9ebb61a2
AN		 1703 if (basic_rates && is_basic)
1704 *basic_rates |= BIT(j);
1705 }
1706 }
46900298
JB		 1707 }
1708 return supp_rates;
1709}
f2753ddb 1710
84f6a01c
JB		 1711void ieee80211_stop_device(struct ieee80211_local *local)
1712{
1713 ieee80211_led_radio(local, false);
67408c8c 1714 ieee80211_mod_tpt_led_trig(local, 0, IEEE80211_TPT_LEDTRIG_FL_RADIO);
84f6a01c
JB		 1715
1716 cancel_work_sync(&local->reconfig_filter);
84f6a01c
JB		 1717
1718 flush_workqueue(local->workqueue);
678f415f 1719 drv_stop(local);
84f6a01c
JB		 1720}
1721
74430f94
JB		 1722static void ieee80211_flush_completed_scan(struct ieee80211_local *local,
1723 bool aborted)
1724{
1725 /* It's possible that we don't handle the scan completion in
1726 * time during suspend, so if it's still marked as completed
1727 * here, queue the work and flush it to clean things up.
1728 * Instead of calling the worker function directly here, we
1729 * really queue it to avoid potential races with other flows
1730 * scheduling the same work.
1731 */
1732 if (test_bit(SCAN_COMPLETED, &local->scanning)) {
1733 /* If coming from reconfiguration failure, abort the scan so
1734 * we don't attempt to continue a partial HW scan - which is
1735 * possible otherwise if (e.g.) the 2.4 GHz portion was the
1736 * completed scan, and a 5 GHz portion is still pending.
1737 */
1738 if (aborted)
1739 set_bit(SCAN_ABORTED, &local->scanning);
1740 ieee80211_queue_delayed_work(&local->hw, &local->scan_work, 0);
1741 flush_delayed_work(&local->scan_work);
1742 }
1743}
1744
f6837ba8
JB		 1745static void ieee80211_handle_reconfig_failure(struct ieee80211_local *local)
1746{
1747 struct ieee80211_sub_if_data *sdata;
1748 struct ieee80211_chanctx *ctx;
1749
1750 /*
1751 * We get here if during resume the device can't be restarted properly.
1752 * We might also get here if this happens during HW reset, which is a
1753 * slightly different situation and we need to drop all connections in
1754 * the latter case.
1755 *
1756 * Ask cfg80211 to turn off all interfaces, this will result in more
1757 * warnings but at least we'll then get into a clean stopped state.
1758 */
1759
1760 local->resuming = false;
1761 local->suspended = false;
7584f88f 1762 local->in_reconfig = false;
f6837ba8 1763
74430f94
JB		 1764 ieee80211_flush_completed_scan(local, true);
1765
f6837ba8
JB		 1766 /* scheduled scan clearly can't be running any more, but tell
1767 * cfg80211 and clear local state
1768 */
1769 ieee80211_sched_scan_end(local);
1770
1771 list_for_each_entry(sdata, &local->interfaces, list)
1772 sdata->flags &= ~IEEE80211_SDATA_IN_DRIVER;
1773
1774 /* Mark channel contexts as not being in the driver any more to avoid
1775 * removing them from the driver during the shutdown process...
1776 */
1777 mutex_lock(&local->chanctx_mtx);
1778 list_for_each_entry(ctx, &local->chanctx_list, list)
1779 ctx->driver_present = false;
1780 mutex_unlock(&local->chanctx_mtx);
1781
1782 cfg80211_shutdown_all_interfaces(local->hw.wiphy);
1783}
1784
153a5fc4
SG		 1785static void ieee80211_assign_chanctx(struct ieee80211_local *local,
1786 struct ieee80211_sub_if_data *sdata)
1787{
1788 struct ieee80211_chanctx_conf *conf;
1789 struct ieee80211_chanctx *ctx;
1790
1791 if (!local->use_chanctx)
1792 return;
1793
1794 mutex_lock(&local->chanctx_mtx);
1795 conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
1796 lockdep_is_held(&local->chanctx_mtx));
1797 if (conf) {
1798 ctx = container_of(conf, struct ieee80211_chanctx, conf);
1799 drv_assign_vif_chanctx(local, sdata, ctx);
1800 }
1801 mutex_unlock(&local->chanctx_mtx);
1802}
1803
1ea2c864
JB		 1804static void ieee80211_reconfig_stations(struct ieee80211_sub_if_data *sdata)
1805{
1806 struct ieee80211_local *local = sdata->local;
1807 struct sta_info *sta;
1808
1809 /* add STAs back */
1810 mutex_lock(&local->sta_mtx);
1811 list_for_each_entry(sta, &local->sta_list, list) {
1812 enum ieee80211_sta_state state;
1813
1814 if (!sta->uploaded || sta->sdata != sdata)
1815 continue;
1816
1817 for (state = IEEE80211_STA_NOTEXIST;
1818 state < sta->sta_state; state++)
1819 WARN_ON(drv_sta_state(local, sta->sdata, sta, state,
1820 state + 1));
1821 }
1822 mutex_unlock(&local->sta_mtx);
1823}
1824
167e33f4
AB		 1825static int ieee80211_reconfig_nan(struct ieee80211_sub_if_data *sdata)
1826{
1827 struct cfg80211_nan_func *func, **funcs;
1828 int res, id, i = 0;
1829
1830 res = drv_start_nan(sdata->local, sdata,
1831 &sdata->u.nan.conf);
1832 if (WARN_ON(res))
1833 return res;
1834
6396bb22
KC		 1835 funcs = kcalloc(sdata->local->hw.max_nan_de_entries + 1,
1836 sizeof(*funcs),
1837 GFP_KERNEL);
167e33f4
AB		 1838 if (!funcs)
1839 return -ENOMEM;
1840
1841 /* Add all the functions:
1842 * This is a little bit ugly. We need to call a potentially sleeping
1843 * callback for each NAN function, so we can't hold the spinlock.
1844 */
1845 spin_lock_bh(&sdata->u.nan.func_lock);
1846
1847 idr_for_each_entry(&sdata->u.nan.function_inst_ids, func, id)
1848 funcs[i++] = func;
1849
1850 spin_unlock_bh(&sdata->u.nan.func_lock);
1851
1852 for (i = 0; funcs[i]; i++) {
1853 res = drv_add_nan_func(sdata->local, sdata, funcs[i]);
1854 if (WARN_ON(res))
1855 ieee80211_nan_func_terminated(&sdata->vif,
1856 funcs[i]->instance_id,
1857 NL80211_NAN_FUNC_TERM_REASON_ERROR,
1858 GFP_KERNEL);
1859 }
1860
1861 kfree(funcs);
1862
1863 return 0;
1864}
1865
f2753ddb
JB		 1866int ieee80211_reconfig(struct ieee80211_local *local)
1867{
1868 struct ieee80211_hw *hw = &local->hw;
1869 struct ieee80211_sub_if_data *sdata;
55de908a 1870 struct ieee80211_chanctx *ctx;
f2753ddb 1871 struct sta_info *sta;
2683d65b 1872 int res, i;
d888130a 1873 bool reconfig_due_to_wowlan = false;
d43c6b6e 1874 struct ieee80211_sub_if_data *sched_scan_sdata;
6ea0a69c 1875 struct cfg80211_sched_scan_request *sched_scan_req;
d43c6b6e 1876 bool sched_scan_stopped = false;
b0485e9f 1877 bool suspended = local->suspended;
d888130a 1878
0f8b8245
EP		 1879 /* nothing to do if HW shouldn't run */
1880 if (!local->open_count)
1881 goto wake_up;
1882
8f21b0ad 1883#ifdef CONFIG_PM
b0485e9f 1884 if (suspended)
ceb99fe0 1885 local->resuming = true;
f2753ddb 1886
eecc4800 1887 if (local->wowlan) {
b0485e9f
EP		 1888 /*
1889 * In the wowlan case, both mac80211 and the device
1890 * are functional when the resume op is called, so
1891 * clear local->suspended so the device could operate
1892 * normally (e.g. pass rx frames).
1893 */
1894 local->suspended = false;
eecc4800 1895 res = drv_resume(local);
27b3eb9c 1896 local->wowlan = false;
eecc4800
JB		 1897 if (res < 0) {
1898 local->resuming = false;
1899 return res;
1900 }
1901 if (res == 0)
1902 goto wake_up;
1903 WARN_ON(res > 1);
1904 /*
1905 * res is 1, which means the driver requested
1906 * to go through a regular reset on wakeup.
b0485e9f 1907 * restore local->suspended in this case.
eecc4800 1908 */
d888130a 1909 reconfig_due_to_wowlan = true;
b0485e9f 1910 local->suspended = true;
eecc4800
JB		 1911 }
1912#endif
f2753ddb 1913
43d6df00
EP		 1914 /*
1915 * In case of hw_restart during suspend (without wowlan),
1916 * cancel restart work, as we are reconfiguring the device
1917 * anyway.
1918 * Note that restart_work is scheduled on a frozen workqueue,
1919 * so we can't deadlock in this case.
1920 */
1921 if (suspended && local->in_reconfig && !reconfig_due_to_wowlan)
1922 cancel_work_sync(&local->restart_work);
1923
968a76ce
EP		 1924 local->started = false;
1925
94f9b97b
JB		 1926 /*
1927 * Upon resume hardware can sometimes be goofy due to
1928 * various platform / driver / bus issues, so restarting
1929 * the device may at times not work immediately. Propagate
1930 * the error.
1931 */
1932 res = drv_start(local);
1933 if (res) {
b0485e9f 1934 if (suspended)
f6837ba8
JB		 1935 WARN(1, "Hardware became unavailable upon resume. This could be a software issue prior to suspend or a hardware issue.\n");
1936 else
1937 WARN(1, "Hardware became unavailable during restart.\n");
1938 ieee80211_handle_reconfig_failure(local);
94f9b97b 1939 return res;
f2753ddb
JB		 1940 }
1941
7f281975
YAP		 1942 /* setup fragmentation threshold */
1943 drv_set_frag_threshold(local, hw->wiphy->frag_threshold);
1944
1945 /* setup RTS threshold */
1946 drv_set_rts_threshold(local, hw->wiphy->rts_threshold);
1947
1948 /* reset coverage class */
1949 drv_set_coverage_class(local, hw->wiphy->coverage_class);
1950
94f9b97b
JB		 1951 ieee80211_led_radio(local, true);
1952 ieee80211_mod_tpt_led_trig(local,
1953 IEEE80211_TPT_LEDTRIG_FL_RADIO, 0);
1954
f2753ddb 1955 /* add interfaces */
4b6f1dd6
JB		 1956 sdata = rtnl_dereference(local->monitor_sdata);
1957 if (sdata) {
3c3e21e7
JB		 1958 /* in HW restart it exists already */
1959 WARN_ON(local->resuming);
4b6f1dd6
JB		 1960 res = drv_add_interface(local, sdata);
1961 if (WARN_ON(res)) {
0c2bef46 1962 RCU_INIT_POINTER(local->monitor_sdata, NULL);
4b6f1dd6
JB		 1963 synchronize_net();
1964 kfree(sdata);
1965 }
1966 }
1967
f2753ddb
JB		 1968 list_for_each_entry(sdata, &local->interfaces, list) {
1969 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1970 sdata->vif.type != NL80211_IFTYPE_MONITOR &&
c8fff3dc 1971 ieee80211_sdata_running(sdata)) {
7b7eab6f 1972 res = drv_add_interface(local, sdata);
c8fff3dc
LC		 1973 if (WARN_ON(res))
1974 break;
1975 }
1976 }
1977
1978 /* If adding any of the interfaces failed above, roll back and
1979 * report failure.
1980 */
1981 if (res) {
1982 list_for_each_entry_continue_reverse(sdata, &local->interfaces,
1983 list)
1984 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1985 sdata->vif.type != NL80211_IFTYPE_MONITOR &&
1986 ieee80211_sdata_running(sdata))
1987 drv_remove_interface(local, sdata);
1988 ieee80211_handle_reconfig_failure(local);
1989 return res;
f2753ddb
JB		 1990 }
1991
55de908a 1992 /* add channel contexts */
f0dea9c7
AS		 1993 if (local->use_chanctx) {
1994 mutex_lock(&local->chanctx_mtx);
1995 list_for_each_entry(ctx, &local->chanctx_list, list)
5bcae31d
MK		 1996 if (ctx->replace_state !=
1997 IEEE80211_CHANCTX_REPLACES_OTHER)
1998 WARN_ON(drv_add_chanctx(local, ctx));
f0dea9c7 1999 mutex_unlock(&local->chanctx_mtx);
55de908a 2000
7df180f7
ZG		 2001 sdata = rtnl_dereference(local->monitor_sdata);
2002 if (sdata && ieee80211_sdata_running(sdata))
2003 ieee80211_assign_chanctx(local, sdata);
2004 }
fe5f2559 2005
f2753ddb
JB		 2006 /* reconfigure hardware */
2007 ieee80211_hw_config(local, ~0);
2008
f2753ddb 2009 ieee80211_configure_filter(local);
f2753ddb
JB		 2010
2011 /* Finally also reconfigure all the BSS information */
2012 list_for_each_entry(sdata, &local->interfaces, list) {
ac8dd506
JB		 2013 u32 changed;
2014
9607e6b6 2015 if (!ieee80211_sdata_running(sdata))
f2753ddb 2016 continue;
ac8dd506 2017
1ea2c864
JB		 2018 ieee80211_assign_chanctx(local, sdata);
2019
2020 switch (sdata->vif.type) {
2021 case NL80211_IFTYPE_AP_VLAN:
2022 case NL80211_IFTYPE_MONITOR:
2023 break;
2024 default:
2025 ieee80211_reconfig_stations(sdata);
2026 /* fall through */
2027 case NL80211_IFTYPE_AP: /* AP stations are handled later */
2028 for (i = 0; i < IEEE80211_NUM_ACS; i++)
2029 drv_conf_tx(local, sdata, i,
2030 &sdata->tx_conf[i]);
2031 break;
2032 }
2033
ac8dd506
JB		 2034 /* common change flags for all interface types */
2035 changed = BSS_CHANGED_ERP_CTS_PROT |
2036 BSS_CHANGED_ERP_PREAMBLE |
2037 BSS_CHANGED_ERP_SLOT |
2038 BSS_CHANGED_HT |
2039 BSS_CHANGED_BASIC_RATES |
2040 BSS_CHANGED_BEACON_INT |
2041 BSS_CHANGED_BSSID |
4ced3f74 2042 BSS_CHANGED_CQM |
55de47f6 2043 BSS_CHANGED_QOS |
1ea6f9c0 2044 BSS_CHANGED_IDLE |
dcbe73ca
PKC		 2045 BSS_CHANGED_TXPOWER |
2046 BSS_CHANGED_MCAST_RATE;
ac8dd506 2047
b5a33d52 2048 if (sdata->vif.mu_mimo_owner)
23a1f8d4
SS		 2049 changed |= BSS_CHANGED_MU_GROUPS;
2050
f2753ddb
JB		 2051 switch (sdata->vif.type) {
2052 case NL80211_IFTYPE_STATION:
0d392e93 2053 changed |= BSS_CHANGED_ASSOC |
ab095877
EP		 2054 BSS_CHANGED_ARP_FILTER |
2055 BSS_CHANGED_PS;
c65dd147 2056
989c6505
AB		 2057 /* Re-send beacon info report to the driver */
2058 if (sdata->u.mgd.have_beacon)
2059 changed |= BSS_CHANGED_BEACON_INFO;
c65dd147 2060
e38a017b
AS		 2061 if (sdata->vif.bss_conf.max_idle_period ||
2062 sdata->vif.bss_conf.protected_keep_alive)
2063 changed |= BSS_CHANGED_KEEP_ALIVE;
2064
8d61ffa5 2065 sdata_lock(sdata);
ac8dd506 2066 ieee80211_bss_info_change_notify(sdata, changed);
8d61ffa5 2067 sdata_unlock(sdata);
ac8dd506 2068 break;
6e0bd6c3 2069 case NL80211_IFTYPE_OCB:
239281f8
RL		 2070 changed |= BSS_CHANGED_OCB;
2071 ieee80211_bss_info_change_notify(sdata, changed);
6e0bd6c3 2072 break;
f2753ddb 2073 case NL80211_IFTYPE_ADHOC:
ac8dd506
JB		 2074 changed |= BSS_CHANGED_IBSS;
2075 /* fall through */
f2753ddb 2076 case NL80211_IFTYPE_AP:
339afbf4 2077 changed |= BSS_CHANGED_SSID | BSS_CHANGED_P2P_PS;
e7979ac7 2078
1041638f 2079 if (sdata->vif.type == NL80211_IFTYPE_AP) {
e7979ac7
AN		 2080 changed |= BSS_CHANGED_AP_PROBE_RESP;
2081
1041638f
JB		 2082 if (rcu_access_pointer(sdata->u.ap.beacon))
2083 drv_start_ap(local, sdata);
2084 }
2085
7827493b 2086 /* fall through */
f2753ddb 2087 case NL80211_IFTYPE_MESH_POINT:
8da34932
JB		 2088 if (sdata->vif.bss_conf.enable_beacon) {
2089 changed |= BSS_CHANGED_BEACON |
2090 BSS_CHANGED_BEACON_ENABLED;
2091 ieee80211_bss_info_change_notify(sdata, changed);
2092 }
f2753ddb 2093 break;
167e33f4
AB		 2094 case NL80211_IFTYPE_NAN:
2095 res = ieee80211_reconfig_nan(sdata);
2096 if (res < 0) {
2097 ieee80211_handle_reconfig_failure(local);
2098 return res;
2099 }
2100 break;
f2753ddb 2101 case NL80211_IFTYPE_WDS:
f2753ddb
JB		 2102 case NL80211_IFTYPE_AP_VLAN:
2103 case NL80211_IFTYPE_MONITOR:
98104fde 2104 case NL80211_IFTYPE_P2P_DEVICE:
b205786e 2105 /* nothing to do */
f142c6b9 2106 break;
f2753ddb 2107 case NL80211_IFTYPE_UNSPECIFIED:
2e161f78 2108 case NUM_NL80211_IFTYPES:
2ca27bcf
JB		 2109 case NL80211_IFTYPE_P2P_CLIENT:
2110 case NL80211_IFTYPE_P2P_GO:
f2753ddb
JB		 2111 WARN_ON(1);
2112 break;
2113 }
2114 }
2115
4a733ef1 2116 ieee80211_recalc_ps(local);
8e1b23b9 2117
6e1b1b24
EP		 2118 /*
2119 * The sta might be in psm against the ap (e.g. because
2120 * this was the state before a hw restart), so we
2121 * explicitly send a null packet in order to make sure
2122 * it'll sync against the ap (and get out of psm).
2123 */
2124 if (!(local->hw.conf.flags & IEEE80211_CONF_PS)) {
2125 list_for_each_entry(sdata, &local->interfaces, list) {
2126 if (sdata->vif.type != NL80211_IFTYPE_STATION)
2127 continue;
20f544ee
JB		 2128 if (!sdata->u.mgd.associated)
2129 continue;
6e1b1b24 2130
076cdcb1 2131 ieee80211_send_nullfunc(local, sdata, false);
6e1b1b24
EP		 2132 }
2133 }
2134
2e8d397e
AN		 2135 /* APs are now beaconing, add back stations */
2136 mutex_lock(&local->sta_mtx);
2137 list_for_each_entry(sta, &local->sta_list, list) {
2138 enum ieee80211_sta_state state;
2139
2140 if (!sta->uploaded)
2141 continue;
2142
19103a4b 2143 if (sta->sdata->vif.type != NL80211_IFTYPE_AP &&
2144 sta->sdata->vif.type != NL80211_IFTYPE_AP_VLAN)
2e8d397e
AN		 2145 continue;
2146
2147 for (state = IEEE80211_STA_NOTEXIST;
2148 state < sta->sta_state; state++)
2149 WARN_ON(drv_sta_state(local, sta->sdata, sta, state,
2150 state + 1));
2151 }
2152 mutex_unlock(&local->sta_mtx);
2153
7b21aea0 2154 /* add back keys */
f9dca80b
MK		 2155 list_for_each_entry(sdata, &local->interfaces, list)
2156 ieee80211_reset_crypto_tx_tailroom(sdata);
2157
7b21aea0
ES		 2158 list_for_each_entry(sdata, &local->interfaces, list)
2159 if (ieee80211_sdata_running(sdata))
2160 ieee80211_enable_keys(sdata);
2161
0d440ea2
EP		 2162 /* Reconfigure sched scan if it was interrupted by FW restart */
2163 mutex_lock(&local->mtx);
2164 sched_scan_sdata = rcu_dereference_protected(local->sched_scan_sdata,
2165 lockdep_is_held(&local->mtx));
2166 sched_scan_req = rcu_dereference_protected(local->sched_scan_req,
2167 lockdep_is_held(&local->mtx));
2168 if (sched_scan_sdata && sched_scan_req)
2169 /*
2170 * Sched scan stopped, but we don't want to report it. Instead,
2171 * we're trying to reschedule. However, if more than one scan
2172 * plan was set, we cannot reschedule since we don't know which
2173 * scan plan was currently running (and some scan plans may have
2174 * already finished).
2175 */
2176 if (sched_scan_req->n_scan_plans > 1 ||
2177 __ieee80211_request_sched_scan_start(sched_scan_sdata,
b9f628fc
EP		 2178 sched_scan_req)) {
2179 RCU_INIT_POINTER(local->sched_scan_sdata, NULL);
2180 RCU_INIT_POINTER(local->sched_scan_req, NULL);
0d440ea2 2181 sched_scan_stopped = true;
b9f628fc 2182 }
0d440ea2
EP		 2183 mutex_unlock(&local->mtx);
2184
2185 if (sched_scan_stopped)
b34939b9 2186 cfg80211_sched_scan_stopped_rtnl(local->hw.wiphy, 0);
0d440ea2 2187
c6209488 2188 wake_up:
04800ada 2189
3c3e21e7
JB		 2190 if (local->monitors == local->open_count && local->monitors > 0)
2191 ieee80211_add_virtual_monitor(local);
2192
2a419056
JB		 2193 /*
2194 * Clear the WLAN_STA_BLOCK_BA flag so new aggregation
2195 * sessions can be established after a resume.
2196 *
2197 * Also tear down aggregation sessions since reconfiguring
2198 * them in a hardware restart scenario is not easily done
2199 * right now, and the hardware will have lost information
2200 * about the sessions, but we and the AP still think they
2201 * are active. This is really a workaround though.
2202 */
30686bf7 2203 if (ieee80211_hw_check(hw, AMPDU_AGGREGATION)) {
2a419056
JB		 2204 mutex_lock(&local->sta_mtx);
2205
2206 list_for_each_entry(sta, &local->sta_list, list) {
27392719
EP		 2207 if (!local->resuming)
2208 ieee80211_sta_tear_down_BA_sessions(
2209 sta, AGG_STOP_LOCAL_REQUEST);
c2c98fde 2210 clear_sta_flag(sta, WLAN_STA_BLOCK_BA);
74e2bd1f 2211 }
2a419056
JB		 2212
2213 mutex_unlock(&local->sta_mtx);
74e2bd1f 2214 }
74e2bd1f 2215
2316380f
SS		 2216 if (local->in_reconfig) {
2217 local->in_reconfig = false;
2218 barrier();
2219
2220 /* Restart deferred ROCs */
2221 mutex_lock(&local->mtx);
2222 ieee80211_start_next_roc(local);
2223 mutex_unlock(&local->mtx);
2224 }
2225
445ea4e8 2226 ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
cca07b00
LC		 2227 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
2228 false);
f2753ddb 2229
5bb644a0
JB		 2230 /*
2231 * If this is for hw restart things are still running.
2232 * We may want to change that later, however.
2233 */
b0485e9f 2234 if (local->open_count && (!suspended || reconfig_due_to_wowlan))
cf2c92d8 2235 drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_RESTART);
8f21b0ad 2236
b0485e9f 2237 if (!suspended)
5bb644a0
JB		 2238 return 0;
2239
2240#ifdef CONFIG_PM
ceb99fe0 2241 /* first set suspended false, then resuming */
5bb644a0 2242 local->suspended = false;
ceb99fe0
JB		 2243 mb();
2244 local->resuming = false;
5bb644a0 2245
74430f94 2246 ieee80211_flush_completed_scan(local, false);
9120d94e 2247
0f8b8245 2248 if (local->open_count && !reconfig_due_to_wowlan)
cf2c92d8
EP		 2249 drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_SUSPEND);
2250
b8360ab8
JB		 2251 list_for_each_entry(sdata, &local->interfaces, list) {
2252 if (!ieee80211_sdata_running(sdata))
2253 continue;
2254 if (sdata->vif.type == NL80211_IFTYPE_STATION)
2255 ieee80211_sta_restart(sdata);
2256 }
2257
26d59535 2258 mod_timer(&local->sta_cleanup, jiffies + 1);
5bb644a0
JB		 2259#else
2260 WARN_ON(1);
2261#endif
d43c6b6e 2262
f2753ddb
JB		 2263 return 0;
2264}
42935eca 2265
95acac61
JB		 2266void ieee80211_resume_disconnect(struct ieee80211_vif *vif)
2267{
2268 struct ieee80211_sub_if_data *sdata;
2269 struct ieee80211_local *local;
2270 struct ieee80211_key *key;
2271
2272 if (WARN_ON(!vif))
2273 return;
2274
2275 sdata = vif_to_sdata(vif);
2276 local = sdata->local;
2277
2278 if (WARN_ON(!local->resuming))
2279 return;
2280
2281 if (WARN_ON(vif->type != NL80211_IFTYPE_STATION))
2282 return;
2283
2284 sdata->flags |= IEEE80211_SDATA_DISCONNECT_RESUME;
2285
2286 mutex_lock(&local->key_mtx);
2287 list_for_each_entry(key, &sdata->key_list, list)
2288 key->flags |= KEY_FLAG_TAINTED;
2289 mutex_unlock(&local->key_mtx);
2290}
2291EXPORT_SYMBOL_GPL(ieee80211_resume_disconnect);
2292
04ecd257 2293void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata)
0f78231b 2294{
04ecd257
JB		 2295 struct ieee80211_local *local = sdata->local;
2296 struct ieee80211_chanctx_conf *chanctx_conf;
2297 struct ieee80211_chanctx *chanctx;
025e6be2 2298
04ecd257 2299 mutex_lock(&local->chanctx_mtx);
0f78231b 2300
04ecd257
JB		 2301 chanctx_conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
2302 lockdep_is_held(&local->chanctx_mtx));
0f78231b 2303
c189a685
AO		 2304 /*
2305 * This function can be called from a work, thus it may be possible
2306 * that the chanctx_conf is removed (due to a disconnection, for
2307 * example).
2308 * So nothing should be done in such case.
2309 */
2310 if (!chanctx_conf)
5d8e4237 2311 goto unlock;
0f78231b 2312
04ecd257
JB		 2313 chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf);
2314 ieee80211_recalc_smps_chanctx(local, chanctx);
5d8e4237 2315 unlock:
04ecd257 2316 mutex_unlock(&local->chanctx_mtx);
0f78231b 2317}
8e664fb3 2318
21f659bf
EP		 2319void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata)
2320{
2321 struct ieee80211_local *local = sdata->local;
2322 struct ieee80211_chanctx_conf *chanctx_conf;
2323 struct ieee80211_chanctx *chanctx;
2324
2325 mutex_lock(&local->chanctx_mtx);
2326
2327 chanctx_conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
2328 lockdep_is_held(&local->chanctx_mtx));
2329
2330 if (WARN_ON_ONCE(!chanctx_conf))
2331 goto unlock;
2332
2333 chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf);
2334 ieee80211_recalc_chanctx_min_def(local, chanctx);
2335 unlock:
2336 mutex_unlock(&local->chanctx_mtx);
2337}
2338
8e664fb3
JB		 2339size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset)
2340{
2341 size_t pos = offset;
2342
2343 while (pos < ielen && ies[pos] != WLAN_EID_VENDOR_SPECIFIC)
2344 pos += 2 + ies[pos + 1];
2345
2346 return pos;
2347}
615f7b9b
MV		 2348
2349static void _ieee80211_enable_rssi_reports(struct ieee80211_sub_if_data *sdata,
2350 int rssi_min_thold,
2351 int rssi_max_thold)
2352{
2353 trace_api_enable_rssi_reports(sdata, rssi_min_thold, rssi_max_thold);
2354
2355 if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
2356 return;
2357
2358 /*
2359 * Scale up threshold values before storing it, as the RSSI averaging
2360 * algorithm uses a scaled up value as well. Change this scaling
2361 * factor if the RSSI averaging algorithm changes.
2362 */
2363 sdata->u.mgd.rssi_min_thold = rssi_min_thold*16;
2364 sdata->u.mgd.rssi_max_thold = rssi_max_thold*16;
2365}
2366
2367void ieee80211_enable_rssi_reports(struct ieee80211_vif *vif,
2368 int rssi_min_thold,
2369 int rssi_max_thold)
2370{
2371 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2372
2373 WARN_ON(rssi_min_thold == rssi_max_thold ||
2374 rssi_min_thold > rssi_max_thold);
2375
2376 _ieee80211_enable_rssi_reports(sdata, rssi_min_thold,
2377 rssi_max_thold);
2378}
2379EXPORT_SYMBOL(ieee80211_enable_rssi_reports);
2380
2381void ieee80211_disable_rssi_reports(struct ieee80211_vif *vif)
2382{
2383 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2384
2385 _ieee80211_enable_rssi_reports(sdata, 0, 0);
2386}
2387EXPORT_SYMBOL(ieee80211_disable_rssi_reports);
768db343 2388
ef96a842 2389u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
42e7aa77
AS		 2390 u16 cap)
2391{
2392 __le16 tmp;
2393
2394 *pos++ = WLAN_EID_HT_CAPABILITY;
2395 *pos++ = sizeof(struct ieee80211_ht_cap);
2396 memset(pos, 0, sizeof(struct ieee80211_ht_cap));
2397
2398 /* capability flags */
2399 tmp = cpu_to_le16(cap);
2400 memcpy(pos, &tmp, sizeof(u16));
2401 pos += sizeof(u16);
2402
2403 /* AMPDU parameters */
ef96a842
BG		 2404 *pos++ = ht_cap->ampdu_factor |
2405 (ht_cap->ampdu_density <<
42e7aa77
AS		 2406 IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT);
2407
2408 /* MCS set */
ef96a842
BG		 2409 memcpy(pos, &ht_cap->mcs, sizeof(ht_cap->mcs));
2410 pos += sizeof(ht_cap->mcs);
42e7aa77
AS		 2411
2412 /* extended capabilities */
2413 pos += sizeof(__le16);
2414
2415 /* BF capabilities */
2416 pos += sizeof(__le32);
2417
2418 /* antenna selection */
2419 pos += sizeof(u8);
2420
2421 return pos;
2422}
2423
ba0afa2f 2424u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
cc3983d8 2425 u32 cap)
ba0afa2f
MP		 2426{
2427 __le32 tmp;
2428
2429 *pos++ = WLAN_EID_VHT_CAPABILITY;
d4950281
MP		 2430 *pos++ = sizeof(struct ieee80211_vht_cap);
2431 memset(pos, 0, sizeof(struct ieee80211_vht_cap));
ba0afa2f
MP		 2432
2433 /* capability flags */
2434 tmp = cpu_to_le32(cap);
2435 memcpy(pos, &tmp, sizeof(u32));
2436 pos += sizeof(u32);
2437
2438 /* VHT MCS set */
2439 memcpy(pos, &vht_cap->vht_mcs, sizeof(vht_cap->vht_mcs));
2440 pos += sizeof(vht_cap->vht_mcs);
2441
2442 return pos;
2443}
2444
41cbb0f5
LC		 2445u8 *ieee80211_ie_build_he_cap(u8 *pos,
2446 const struct ieee80211_sta_he_cap *he_cap,
2447 u8 *end)
2448{
2449 u8 n;
2450 u8 ie_len;
2451 u8 *orig_pos = pos;
2452
2453 /* Make sure we have place for the IE */
2454 /*
2455 * TODO: the 1 added is because this temporarily is under the EXTENSION
2456 * IE. Get rid of it when it moves.
2457 */
2458 if (!he_cap)
2459 return orig_pos;
2460
2461 n = ieee80211_he_mcs_nss_size(&he_cap->he_cap_elem);
2462 ie_len = 2 + 1 +
2463 sizeof(he_cap->he_cap_elem) + n +
2464 ieee80211_he_ppe_size(he_cap->ppe_thres[0],
2465 he_cap->he_cap_elem.phy_cap_info);
2466
2467 if ((end - pos) < ie_len)
2468 return orig_pos;
2469
2470 *pos++ = WLAN_EID_EXTENSION;
2471 pos++; /* We'll set the size later below */
2472 *pos++ = WLAN_EID_EXT_HE_CAPABILITY;
2473
2474 /* Fixed data */
2475 memcpy(pos, &he_cap->he_cap_elem, sizeof(he_cap->he_cap_elem));
2476 pos += sizeof(he_cap->he_cap_elem);
2477
2478 memcpy(pos, &he_cap->he_mcs_nss_supp, n);
2479 pos += n;
2480
2481 /* Check if PPE Threshold should be present */
2482 if ((he_cap->he_cap_elem.phy_cap_info[6] &
2483 IEEE80211_HE_PHY_CAP6_PPE_THRESHOLD_PRESENT) == 0)
2484 goto end;
2485
2486 /*
2487 * Calculate how many PPET16/PPET8 pairs are to come. Algorithm:
2488 * (NSS_M1 + 1) x (num of 1 bits in RU_INDEX_BITMASK)
2489 */
2490 n = hweight8(he_cap->ppe_thres[0] &
2491 IEEE80211_PPE_THRES_RU_INDEX_BITMASK_MASK);
2492 n *= (1 + ((he_cap->ppe_thres[0] & IEEE80211_PPE_THRES_NSS_MASK) >>
2493 IEEE80211_PPE_THRES_NSS_POS));
2494
2495 /*
2496 * Each pair is 6 bits, and we need to add the 7 "header" bits to the
2497 * total size.
2498 */
2499 n = (n * IEEE80211_PPE_THRES_INFO_PPET_SIZE * 2) + 7;
2500 n = DIV_ROUND_UP(n, 8);
2501
2502 /* Copy PPE Thresholds */
2503 memcpy(pos, &he_cap->ppe_thres, n);
2504 pos += n;
2505
2506end:
2507 orig_pos[1] = (pos - orig_pos) - 2;
2508 return pos;
2509}
2510
074d46d1 2511u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
4bf88530 2512 const struct cfg80211_chan_def *chandef,
57f255f5 2513 u16 prot_mode, bool rifs_mode)
42e7aa77 2514{
074d46d1 2515 struct ieee80211_ht_operation *ht_oper;
42e7aa77 2516 /* Build HT Information */
074d46d1
JB		 2517 *pos++ = WLAN_EID_HT_OPERATION;
2518 *pos++ = sizeof(struct ieee80211_ht_operation);
2519 ht_oper = (struct ieee80211_ht_operation *)pos;
4bf88530
JB		 2520 ht_oper->primary_chan = ieee80211_frequency_to_channel(
2521 chandef->chan->center_freq);
2522 switch (chandef->width) {
2523 case NL80211_CHAN_WIDTH_160:
2524 case NL80211_CHAN_WIDTH_80P80:
2525 case NL80211_CHAN_WIDTH_80:
2526 case NL80211_CHAN_WIDTH_40:
2527 if (chandef->center_freq1 > chandef->chan->center_freq)
2528 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
2529 else
2530 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
42e7aa77 2531 break;
42e7aa77 2532 default:
074d46d1 2533 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_NONE;
42e7aa77
AS		 2534 break;
2535 }
aee286c2 2536 if (ht_cap->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 &&
4bf88530
JB		 2537 chandef->width != NL80211_CHAN_WIDTH_20_NOHT &&
2538 chandef->width != NL80211_CHAN_WIDTH_20)
074d46d1 2539 ht_oper->ht_param |= IEEE80211_HT_PARAM_CHAN_WIDTH_ANY;
ff3cc5f4 2540
57f255f5
AN		 2541 if (rifs_mode)
2542 ht_oper->ht_param |= IEEE80211_HT_PARAM_RIFS_MODE;
2543
431e3154 2544 ht_oper->operation_mode = cpu_to_le16(prot_mode);
074d46d1 2545 ht_oper->stbc_param = 0x0000;
42e7aa77
AS		 2546
2547 /* It seems that Basic MCS set and Supported MCS set
2548 are identical for the first 10 bytes */
074d46d1
JB		 2549 memset(&ht_oper->basic_set, 0, 16);
2550 memcpy(&ht_oper->basic_set, &ht_cap->mcs, 10);
42e7aa77 2551
074d46d1 2552 return pos + sizeof(struct ieee80211_ht_operation);
42e7aa77
AS		 2553}
2554
75d627d5
SW		 2555void ieee80211_ie_build_wide_bw_cs(u8 *pos,
2556 const struct cfg80211_chan_def *chandef)
2557{
2558 *pos++ = WLAN_EID_WIDE_BW_CHANNEL_SWITCH; /* EID */
2559 *pos++ = 3; /* IE length */
2560 /* New channel width */
2561 switch (chandef->width) {
2562 case NL80211_CHAN_WIDTH_80:
2563 *pos++ = IEEE80211_VHT_CHANWIDTH_80MHZ;
2564 break;
2565 case NL80211_CHAN_WIDTH_160:
2566 *pos++ = IEEE80211_VHT_CHANWIDTH_160MHZ;
2567 break;
2568 case NL80211_CHAN_WIDTH_80P80:
2569 *pos++ = IEEE80211_VHT_CHANWIDTH_80P80MHZ;
2570 break;
2571 default:
2572 *pos++ = IEEE80211_VHT_CHANWIDTH_USE_HT;
2573 }
2574
2575 /* new center frequency segment 0 */
2576 *pos++ = ieee80211_frequency_to_channel(chandef->center_freq1);
2577 /* new center frequency segment 1 */
2578 if (chandef->center_freq2)
2579 *pos++ = ieee80211_frequency_to_channel(chandef->center_freq2);
2580 else
2581 *pos++ = 0;
2582}
2583
fb28ec0c
AN		 2584u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
2585 const struct cfg80211_chan_def *chandef)
2586{
2587 struct ieee80211_vht_operation *vht_oper;
2588
2589 *pos++ = WLAN_EID_VHT_OPERATION;
2590 *pos++ = sizeof(struct ieee80211_vht_operation);
2591 vht_oper = (struct ieee80211_vht_operation *)pos;
2fb51c35 2592 vht_oper->center_freq_seg0_idx = ieee80211_frequency_to_channel(
fb28ec0c
AN		 2593 chandef->center_freq1);
2594 if (chandef->center_freq2)
2fb51c35 2595 vht_oper->center_freq_seg1_idx =
fb28ec0c 2596 ieee80211_frequency_to_channel(chandef->center_freq2);
f020ae40 2597 else
2fb51c35 2598 vht_oper->center_freq_seg1_idx = 0x00;
fb28ec0c
AN		 2599
2600 switch (chandef->width) {
2601 case NL80211_CHAN_WIDTH_160:
23665aaf
JM		 2602 /*
2603 * Convert 160 MHz channel width to new style as interop
2604 * workaround.
2605 */
2606 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ;
2fb51c35 2607 vht_oper->center_freq_seg1_idx = vht_oper->center_freq_seg0_idx;
23665aaf 2608 if (chandef->chan->center_freq < chandef->center_freq1)
2fb51c35 2609 vht_oper->center_freq_seg0_idx -= 8;
23665aaf 2610 else
2fb51c35 2611 vht_oper->center_freq_seg0_idx += 8;
fb28ec0c
AN		 2612 break;
2613 case NL80211_CHAN_WIDTH_80P80:
23665aaf
JM		 2614 /*
2615 * Convert 80+80 MHz channel width to new style as interop
2616 * workaround.
2617 */
2618 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ;
fb28ec0c
AN		 2619 break;
2620 case NL80211_CHAN_WIDTH_80:
2621 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ;
2622 break;
2623 default:
2624 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_USE_HT;
2625 break;
2626 }
2627
2628 /* don't require special VHT peer rates */
2629 vht_oper->basic_mcs_set = cpu_to_le16(0xffff);
2630
2631 return pos + sizeof(struct ieee80211_vht_operation);
2632}
2633
8ac3c704
JB		 2634bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper,
2635 struct cfg80211_chan_def *chandef)
42e7aa77
AS		 2636{
2637 enum nl80211_channel_type channel_type;
2638
8ac3c704
JB		 2639 if (!ht_oper)
2640 return false;
42e7aa77 2641
074d46d1 2642 switch (ht_oper->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) {
42e7aa77
AS		 2643 case IEEE80211_HT_PARAM_CHA_SEC_NONE:
2644 channel_type = NL80211_CHAN_HT20;
2645 break;
2646 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
2647 channel_type = NL80211_CHAN_HT40PLUS;
2648 break;
2649 case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
2650 channel_type = NL80211_CHAN_HT40MINUS;
2651 break;
2652 default:
2653 channel_type = NL80211_CHAN_NO_HT;
8ac3c704 2654 return false;
42e7aa77
AS		 2655 }
2656
8ac3c704
JB		 2657 cfg80211_chandef_create(chandef, chandef->chan, channel_type);
2658 return true;
42e7aa77
AS		 2659}
2660
8ac3c704
JB		 2661bool ieee80211_chandef_vht_oper(const struct ieee80211_vht_operation *oper,
2662 struct cfg80211_chan_def *chandef)
abcff6ef 2663{
8ac3c704
JB		 2664 struct cfg80211_chan_def new = *chandef;
2665 int cf1, cf2;
2666
abcff6ef 2667 if (!oper)
8ac3c704 2668 return false;
abcff6ef 2669
2fb51c35 2670 cf1 = ieee80211_channel_to_frequency(oper->center_freq_seg0_idx,
8ac3c704 2671 chandef->chan->band);
2fb51c35 2672 cf2 = ieee80211_channel_to_frequency(oper->center_freq_seg1_idx,
8ac3c704 2673 chandef->chan->band);
abcff6ef
JD		 2674
2675 switch (oper->chan_width) {
2676 case IEEE80211_VHT_CHANWIDTH_USE_HT:
2677 break;
2678 case IEEE80211_VHT_CHANWIDTH_80MHZ:
8ac3c704
JB		 2679 new.width = NL80211_CHAN_WIDTH_80;
2680 new.center_freq1 = cf1;
23665aaf 2681 /* If needed, adjust based on the newer interop workaround. */
2fb51c35 2682 if (oper->center_freq_seg1_idx) {
23665aaf
JM		 2683 unsigned int diff;
2684
2fb51c35
JB		 2685 diff = abs(oper->center_freq_seg1_idx -
2686 oper->center_freq_seg0_idx);
23665aaf
JM		 2687 if (diff == 8) {
2688 new.width = NL80211_CHAN_WIDTH_160;
2689 new.center_freq1 = cf2;
2690 } else if (diff > 8) {
2691 new.width = NL80211_CHAN_WIDTH_80P80;
2692 new.center_freq2 = cf2;
2693 }
2694 }
abcff6ef
JD		 2695 break;
2696 case IEEE80211_VHT_CHANWIDTH_160MHZ:
8ac3c704
JB		 2697 new.width = NL80211_CHAN_WIDTH_160;
2698 new.center_freq1 = cf1;
abcff6ef
JD		 2699 break;
2700 case IEEE80211_VHT_CHANWIDTH_80P80MHZ:
8ac3c704
JB		 2701 new.width = NL80211_CHAN_WIDTH_80P80;
2702 new.center_freq1 = cf1;
2703 new.center_freq2 = cf2;
abcff6ef
JD		 2704 break;
2705 default:
8ac3c704 2706 return false;
abcff6ef
JD		 2707 }
2708
8ac3c704
JB		 2709 if (!cfg80211_chandef_valid(&new))
2710 return false;
2711
2712 *chandef = new;
2713 return true;
abcff6ef
JD		 2714}
2715
2103dec1
SW		 2716int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef,
2717 const struct ieee80211_supported_band *sband,
2718 const u8 *srates, int srates_len, u32 *rates)
2719{
2720 u32 rate_flags = ieee80211_chandef_rate_flags(chandef);
2721 int shift = ieee80211_chandef_get_shift(chandef);
2722 struct ieee80211_rate *br;
2723 int brate, rate, i, j, count = 0;
2724
2725 *rates = 0;
2726
2727 for (i = 0; i < srates_len; i++) {
2728 rate = srates[i] & 0x7f;
2729
2730 for (j = 0; j < sband->n_bitrates; j++) {
2731 br = &sband->bitrates[j];
2732 if ((rate_flags & br->flags) != rate_flags)
2733 continue;
2734
2735 brate = DIV_ROUND_UP(br->bitrate, (1 << shift) * 5);
2736 if (brate == rate) {
2737 *rates |= BIT(j);
2738 count++;
2739 break;
2740 }
2741 }
2742 }
2743 return count;
2744}
2745
fc8a7321 2746int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
6b77863b 2747 struct sk_buff *skb, bool need_basic,
57fbcce3 2748 enum nl80211_band band)
768db343 2749{
768db343
AN		 2750 struct ieee80211_local *local = sdata->local;
2751 struct ieee80211_supported_band *sband;
2103dec1 2752 int rate, shift;
768db343 2753 u8 i, rates, *pos;
fc8a7321 2754 u32 basic_rates = sdata->vif.bss_conf.basic_rates;
2103dec1 2755 u32 rate_flags;
768db343 2756
2103dec1
SW		 2757 shift = ieee80211_vif_get_shift(&sdata->vif);
2758 rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef);
6b77863b 2759 sband = local->hw.wiphy->bands[band];
2103dec1
SW		 2760 rates = 0;
2761 for (i = 0; i < sband->n_bitrates; i++) {
2762 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
2763 continue;
2764 rates++;
2765 }
768db343
AN		 2766 if (rates > 8)
2767 rates = 8;
2768
2769 if (skb_tailroom(skb) < rates + 2)
2770 return -ENOMEM;
2771
2772 pos = skb_put(skb, rates + 2);
2773 *pos++ = WLAN_EID_SUPP_RATES;
2774 *pos++ = rates;
2775 for (i = 0; i < rates; i++) {
657c3e0c 2776 u8 basic = 0;
2103dec1
SW		 2777 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
2778 continue;
2779
657c3e0c
AN		 2780 if (need_basic && basic_rates & BIT(i))
2781 basic = 0x80;
2103dec1
SW		 2782 rate = DIV_ROUND_UP(sband->bitrates[i].bitrate,
2783 5 * (1 << shift));
2784 *pos++ = basic | (u8) rate;
768db343
AN		 2785 }
2786
2787 return 0;
2788}
2789
fc8a7321 2790int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
6b77863b 2791 struct sk_buff *skb, bool need_basic,
57fbcce3 2792 enum nl80211_band band)
768db343 2793{
768db343
AN		 2794 struct ieee80211_local *local = sdata->local;
2795 struct ieee80211_supported_band *sband;
cc63ec76 2796 int rate, shift;
768db343 2797 u8 i, exrates, *pos;
fc8a7321 2798 u32 basic_rates = sdata->vif.bss_conf.basic_rates;
2103dec1
SW		 2799 u32 rate_flags;
2800
2801 rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef);
2802 shift = ieee80211_vif_get_shift(&sdata->vif);
768db343 2803
6b77863b 2804 sband = local->hw.wiphy->bands[band];
2103dec1
SW		 2805 exrates = 0;
2806 for (i = 0; i < sband->n_bitrates; i++) {
2807 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
2808 continue;
2809 exrates++;
2810 }
2811
768db343
AN		 2812 if (exrates > 8)
2813 exrates -= 8;
2814 else
2815 exrates = 0;
2816
2817 if (skb_tailroom(skb) < exrates + 2)
2818 return -ENOMEM;
2819
2820 if (exrates) {
2821 pos = skb_put(skb, exrates + 2);
2822 *pos++ = WLAN_EID_EXT_SUPP_RATES;
2823 *pos++ = exrates;
2824 for (i = 8; i < sband->n_bitrates; i++) {
657c3e0c 2825 u8 basic = 0;
2103dec1
SW		 2826 if ((rate_flags & sband->bitrates[i].flags)
2827 != rate_flags)
2828 continue;
657c3e0c
AN		 2829 if (need_basic && basic_rates & BIT(i))
2830 basic = 0x80;
2103dec1
SW		 2831 rate = DIV_ROUND_UP(sband->bitrates[i].bitrate,
2832 5 * (1 << shift));
2833 *pos++ = basic | (u8) rate;
768db343
AN		 2834 }
2835 }
2836 return 0;
2837}
1dae27f8
WYG		 2838
2839int ieee80211_ave_rssi(struct ieee80211_vif *vif)
2840{
2841 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2842 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2843
be6bcabc
WYG		 2844 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION)) {
2845 /* non-managed type inferfaces */
2846 return 0;
2847 }
338c17ae 2848 return -ewma_beacon_signal_read(&ifmgd->ave_beacon_signal);
1dae27f8 2849}
0d8a0a17 2850EXPORT_SYMBOL_GPL(ieee80211_ave_rssi);
04ecd257
JB		 2851
2852u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs)
2853{
2854 if (!mcs)
2855 return 1;
2856
2857 /* TODO: consider rx_highest */
2858
2859 if (mcs->rx_mask[3])
2860 return 4;
2861 if (mcs->rx_mask[2])
2862 return 3;
2863 if (mcs->rx_mask[1])
2864 return 2;
2865 return 1;
2866}
f4bda337
TP		 2867
2868/**
2869 * ieee80211_calculate_rx_timestamp - calculate timestamp in frame
2870 * @local: mac80211 hw info struct
2871 * @status: RX status
2872 * @mpdu_len: total MPDU length (including FCS)
2873 * @mpdu_offset: offset into MPDU to calculate timestamp at
2874 *
2875 * This function calculates the RX timestamp at the given MPDU offset, taking
2876 * into account what the RX timestamp was. An offset of 0 will just normalize
2877 * the timestamp to TSF at beginning of MPDU reception.
2878 */
2879u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
2880 struct ieee80211_rx_status *status,
2881 unsigned int mpdu_len,
2882 unsigned int mpdu_offset)
2883{
2884 u64 ts = status->mactime;
2885 struct rate_info ri;
2886 u16 rate;
2887
2888 if (WARN_ON(!ieee80211_have_rx_timestamp(status)))
2889 return 0;
2890
2891 memset(&ri, 0, sizeof(ri));
2892
35f4962c
JB		 2893 ri.bw = status->bw;
2894
f4bda337 2895 /* Fill cfg80211 rate info */
da6a4352
JB		 2896 switch (status->encoding) {
2897 case RX_ENC_HT:
f4bda337
TP		 2898 ri.mcs = status->rate_idx;
2899 ri.flags |= RATE_INFO_FLAGS_MCS;
7fdd69c5 2900 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI)
f4bda337 2901 ri.flags |= RATE_INFO_FLAGS_SHORT_GI;
da6a4352
JB		 2902 break;
2903 case RX_ENC_VHT:
5614618e
JB		 2904 ri.flags |= RATE_INFO_FLAGS_VHT_MCS;
2905 ri.mcs = status->rate_idx;
8613c948 2906 ri.nss = status->nss;
7fdd69c5 2907 if (status->enc_flags & RX_ENC_FLAG_SHORT_GI)
5614618e 2908 ri.flags |= RATE_INFO_FLAGS_SHORT_GI;
da6a4352
JB		 2909 break;
2910 default:
2911 WARN_ON(1);
2912 /* fall through */
2913 case RX_ENC_LEGACY: {
f4bda337 2914 struct ieee80211_supported_band *sband;
2103dec1
SW		 2915 int shift = 0;
2916 int bitrate;
2917
da6a4352
JB		 2918 switch (status->bw) {
2919 case RATE_INFO_BW_10:
2103dec1 2920 shift = 1;
da6a4352
JB		 2921 break;
2922 case RATE_INFO_BW_5:
2103dec1 2923 shift = 2;
da6a4352 2924 break;
b51f3bee 2925 }
f4bda337
TP		 2926
2927 sband = local->hw.wiphy->bands[status->band];
2103dec1
SW		 2928 bitrate = sband->bitrates[status->rate_idx].bitrate;
2929 ri.legacy = DIV_ROUND_UP(bitrate, (1 << shift));
f4a0f0c5
JB		 2930
2931 if (status->flag & RX_FLAG_MACTIME_PLCP_START) {
2932 /* TODO: handle HT/VHT preambles */
57fbcce3 2933 if (status->band == NL80211_BAND_5GHZ) {
f4a0f0c5
JB		 2934 ts += 20 << shift;
2935 mpdu_offset += 2;
7fdd69c5 2936 } else if (status->enc_flags & RX_ENC_FLAG_SHORTPRE) {
f4a0f0c5
JB		 2937 ts += 96;
2938 } else {
2939 ts += 192;
2940 }
2941 }
da6a4352
JB		 2942 break;
2943 }
f4bda337
TP		 2944 }
2945
2946 rate = cfg80211_calculate_bitrate(&ri);
d86aa4f8 2947 if (WARN_ONCE(!rate,
f980ebc0
SS		 2948 "Invalid bitrate: flags=0x%llx, idx=%d, vht_nss=%d\n",
2949 (unsigned long long)status->flag, status->rate_idx,
8613c948 2950 status->nss))
d86aa4f8 2951 return 0;
f4bda337
TP		 2952
2953 /* rewind from end of MPDU */
2954 if (status->flag & RX_FLAG_MACTIME_END)
2955 ts -= mpdu_len * 8 * 10 / rate;
2956
2957 ts += mpdu_offset * 8 * 10 / rate;
2958
2959 return ts;
2960}
164eb02d
SW		 2961
2962void ieee80211_dfs_cac_cancel(struct ieee80211_local *local)
2963{
2964 struct ieee80211_sub_if_data *sdata;
d2859df5 2965 struct cfg80211_chan_def chandef;
164eb02d 2966
4a199068
JB		 2967 /* for interface list, to avoid linking iflist_mtx and chanctx_mtx */
2968 ASSERT_RTNL();
2969
34a3740d 2970 mutex_lock(&local->mtx);
164eb02d 2971 list_for_each_entry(sdata, &local->interfaces, list) {
34a3740d
JB		 2972 /* it might be waiting for the local->mtx, but then
2973 * by the time it gets it, sdata->wdev.cac_started
2974 * will no longer be true
2975 */
2976 cancel_delayed_work(&sdata->dfs_cac_timer_work);
164eb02d
SW		 2977
2978 if (sdata->wdev.cac_started) {
d2859df5 2979 chandef = sdata->vif.bss_conf.chandef;
164eb02d
SW		 2980 ieee80211_vif_release_channel(sdata);
2981 cfg80211_cac_event(sdata->dev,
d2859df5 2982 &chandef,
164eb02d
SW		 2983 NL80211_RADAR_CAC_ABORTED,
2984 GFP_KERNEL);
2985 }
2986 }
34a3740d 2987 mutex_unlock(&local->mtx);
164eb02d
SW		 2988}
2989
2990void ieee80211_dfs_radar_detected_work(struct work_struct *work)
2991{
2992 struct ieee80211_local *local =
2993 container_of(work, struct ieee80211_local, radar_detected_work);
84a3d1c9 2994 struct cfg80211_chan_def chandef = local->hw.conf.chandef;
486cf4c0
MK		 2995 struct ieee80211_chanctx *ctx;
2996 int num_chanctx = 0;
2997
2998 mutex_lock(&local->chanctx_mtx);
2999 list_for_each_entry(ctx, &local->chanctx_list, list) {
3000 if (ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER)
3001 continue;
3002
3003 num_chanctx++;
3004 chandef = ctx->conf.def;
3005 }
3006 mutex_unlock(&local->chanctx_mtx);
164eb02d 3007
4a199068 3008 rtnl_lock();
164eb02d 3009 ieee80211_dfs_cac_cancel(local);
4a199068 3010 rtnl_unlock();
164eb02d 3011
486cf4c0
MK		 3012 if (num_chanctx > 1)
3013 /* XXX: multi-channel is not supported yet */
164eb02d 3014 WARN_ON(1);
84a3d1c9 3015 else
164eb02d 3016 cfg80211_radar_event(local->hw.wiphy, &chandef, GFP_KERNEL);
164eb02d
SW		 3017}
3018
3019void ieee80211_radar_detected(struct ieee80211_hw *hw)
3020{
3021 struct ieee80211_local *local = hw_to_local(hw);
3022
3023 trace_api_radar_detected(local);
3024
4a199068 3025 schedule_work(&local->radar_detected_work);
164eb02d
SW		 3026}
3027EXPORT_SYMBOL(ieee80211_radar_detected);
e6b7cde4
SW		 3028
3029u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c)
3030{
3031 u32 ret;
3032 int tmp;
3033
3034 switch (c->width) {
3035 case NL80211_CHAN_WIDTH_20:
3036 c->width = NL80211_CHAN_WIDTH_20_NOHT;
3037 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
3038 break;
3039 case NL80211_CHAN_WIDTH_40:
3040 c->width = NL80211_CHAN_WIDTH_20;
3041 c->center_freq1 = c->chan->center_freq;
3042 ret = IEEE80211_STA_DISABLE_40MHZ |
3043 IEEE80211_STA_DISABLE_VHT;
3044 break;
3045 case NL80211_CHAN_WIDTH_80:
3046 tmp = (30 + c->chan->center_freq - c->center_freq1)/20;
3047 /* n_P40 */
3048 tmp /= 2;
3049 /* freq_P40 */
3050 c->center_freq1 = c->center_freq1 - 20 + 40 * tmp;
3051 c->width = NL80211_CHAN_WIDTH_40;
3052 ret = IEEE80211_STA_DISABLE_VHT;
3053 break;
3054 case NL80211_CHAN_WIDTH_80P80:
3055 c->center_freq2 = 0;
3056 c->width = NL80211_CHAN_WIDTH_80;
3057 ret = IEEE80211_STA_DISABLE_80P80MHZ |
3058 IEEE80211_STA_DISABLE_160MHZ;
3059 break;
3060 case NL80211_CHAN_WIDTH_160:
3061 /* n_P20 */
3062 tmp = (70 + c->chan->center_freq - c->center_freq1)/20;
3063 /* n_P80 */
3064 tmp /= 4;
3065 c->center_freq1 = c->center_freq1 - 40 + 80 * tmp;
3066 c->width = NL80211_CHAN_WIDTH_80;
3067 ret = IEEE80211_STA_DISABLE_80P80MHZ |
3068 IEEE80211_STA_DISABLE_160MHZ;
3069 break;
3070 default:
3071 case NL80211_CHAN_WIDTH_20_NOHT:
3072 WARN_ON_ONCE(1);
3073 c->width = NL80211_CHAN_WIDTH_20_NOHT;
3074 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
3075 break;
3076 case NL80211_CHAN_WIDTH_5:
3077 case NL80211_CHAN_WIDTH_10:
3078 WARN_ON_ONCE(1);
3079 /* keep c->width */
3080 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
3081 break;
3082 }
3083
3084 WARN_ON_ONCE(!cfg80211_chandef_valid(c));
3085
3086 return ret;
3087}
687da132
EG		 3088
3089/*
3090 * Returns true if smps_mode_new is strictly more restrictive than
3091 * smps_mode_old.
3092 */
3093bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old,
3094 enum ieee80211_smps_mode smps_mode_new)
3095{
3096 if (WARN_ON_ONCE(smps_mode_old == IEEE80211_SMPS_AUTOMATIC ||
3097 smps_mode_new == IEEE80211_SMPS_AUTOMATIC))
3098 return false;
3099
3100 switch (smps_mode_old) {
3101 case IEEE80211_SMPS_STATIC:
3102 return false;
3103 case IEEE80211_SMPS_DYNAMIC:
3104 return smps_mode_new == IEEE80211_SMPS_STATIC;
3105 case IEEE80211_SMPS_OFF:
3106 return smps_mode_new != IEEE80211_SMPS_OFF;
3107 default:
3108 WARN_ON(1);
3109 }
3110
3111 return false;
3112}
c6da674a
CYY		 3113
3114int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata,
3115 struct cfg80211_csa_settings *csa_settings)
3116{
3117 struct sk_buff *skb;
3118 struct ieee80211_mgmt *mgmt;
3119 struct ieee80211_local *local = sdata->local;
3120 int freq;
4c121fd6
JB		 3121 int hdr_len = offsetofend(struct ieee80211_mgmt,
3122 u.action.u.chan_switch);
c6da674a
CYY		 3123 u8 *pos;
3124
3125 if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
3126 sdata->vif.type != NL80211_IFTYPE_MESH_POINT)
3127 return -EOPNOTSUPP;
3128
3129 skb = dev_alloc_skb(local->tx_headroom + hdr_len +
3130 5 + /* channel switch announcement element */
3131 3 + /* secondary channel offset element */
75d627d5 3132 5 + /* wide bandwidth channel switch announcement */
c6da674a
CYY		 3133 8); /* mesh channel switch parameters element */
3134 if (!skb)
3135 return -ENOMEM;
3136
3137 skb_reserve(skb, local->tx_headroom);
b080db58 3138 mgmt = skb_put_zero(skb, hdr_len);
c6da674a
CYY		 3139 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
3140 IEEE80211_STYPE_ACTION);
3141
3142 eth_broadcast_addr(mgmt->da);
3143 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
3144 if (ieee80211_vif_is_mesh(&sdata->vif)) {
3145 memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN);
3146 } else {
3147 struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
3148 memcpy(mgmt->bssid, ifibss->bssid, ETH_ALEN);
3149 }
3150 mgmt->u.action.category = WLAN_CATEGORY_SPECTRUM_MGMT;
3151 mgmt->u.action.u.chan_switch.action_code = WLAN_ACTION_SPCT_CHL_SWITCH;
3152 pos = skb_put(skb, 5);
3153 *pos++ = WLAN_EID_CHANNEL_SWITCH; /* EID */
3154 *pos++ = 3; /* IE length */
3155 *pos++ = csa_settings->block_tx ? 1 : 0; /* CSA mode */
3156 freq = csa_settings->chandef.chan->center_freq;
3157 *pos++ = ieee80211_frequency_to_channel(freq); /* channel */
3158 *pos++ = csa_settings->count; /* count */
3159
3160 if (csa_settings->chandef.width == NL80211_CHAN_WIDTH_40) {
3161 enum nl80211_channel_type ch_type;
3162
3163 skb_put(skb, 3);
3164 *pos++ = WLAN_EID_SECONDARY_CHANNEL_OFFSET; /* EID */
3165 *pos++ = 1; /* IE length */
3166 ch_type = cfg80211_get_chandef_type(&csa_settings->chandef);
3167 if (ch_type == NL80211_CHAN_HT40PLUS)
3168 *pos++ = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
3169 else
3170 *pos++ = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
3171 }
3172
3173 if (ieee80211_vif_is_mesh(&sdata->vif)) {
3174 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
c6da674a
CYY		 3175
3176 skb_put(skb, 8);
3177 *pos++ = WLAN_EID_CHAN_SWITCH_PARAM; /* EID */
3178 *pos++ = 6; /* IE length */
3179 *pos++ = sdata->u.mesh.mshcfg.dot11MeshTTL; /* Mesh TTL */
3180 *pos = 0x00; /* Mesh Flag: Tx Restrict, Initiator, Reason */
3181 *pos |= WLAN_EID_CHAN_SWITCH_PARAM_INITIATOR;
3182 *pos++ |= csa_settings->block_tx ?
3183 WLAN_EID_CHAN_SWITCH_PARAM_TX_RESTRICT : 0x00;
3184 put_unaligned_le16(WLAN_REASON_MESH_CHAN, pos); /* Reason Cd */
3185 pos += 2;
ca91dc97 3186 put_unaligned_le16(ifmsh->pre_value, pos);/* Precedence Value */
c6da674a 3187 pos += 2;
c6da674a
CYY		 3188 }
3189
75d627d5
SW		 3190 if (csa_settings->chandef.width == NL80211_CHAN_WIDTH_80 ||
3191 csa_settings->chandef.width == NL80211_CHAN_WIDTH_80P80 ||
3192 csa_settings->chandef.width == NL80211_CHAN_WIDTH_160) {
3193 skb_put(skb, 5);
3194 ieee80211_ie_build_wide_bw_cs(pos, &csa_settings->chandef);
3195 }
3196
c6da674a
CYY		 3197 ieee80211_tx_skb(sdata, skb);
3198 return 0;
3199}
2475b1cc
MS		 3200
3201bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs)
3202{
3203 return !(cs == NULL || cs->cipher == 0 ||
3204 cs->hdr_len < cs->pn_len + cs->pn_off ||
3205 cs->hdr_len <= cs->key_idx_off ||
3206 cs->key_idx_shift > 7 ||
3207 cs->key_idx_mask == 0);
3208}
3209
3210bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n)
3211{
3212 int i;
3213
3214 /* Ensure we have enough iftype bitmap space for all iftype values */
3215 WARN_ON((NUM_NL80211_IFTYPES / 8 + 1) > sizeof(cs[0].iftype));
3216
3217 for (i = 0; i < n; i++)
3218 if (!ieee80211_cs_valid(&cs[i]))
3219 return false;
3220
3221 return true;
3222}
3223
3224const struct ieee80211_cipher_scheme *
3225ieee80211_cs_get(struct ieee80211_local *local, u32 cipher,
3226 enum nl80211_iftype iftype)
3227{
3228 const struct ieee80211_cipher_scheme *l = local->hw.cipher_schemes;
3229 int n = local->hw.n_cipher_schemes;
3230 int i;
3231 const struct ieee80211_cipher_scheme *cs = NULL;
3232
3233 for (i = 0; i < n; i++) {
3234 if (l[i].cipher == cipher) {
3235 cs = &l[i];
3236 break;
3237 }
3238 }
3239
3240 if (!cs || !(cs->iftype & BIT(iftype)))
3241 return NULL;
3242
3243 return cs;
3244}
3245
3246int ieee80211_cs_headroom(struct ieee80211_local *local,
3247 struct cfg80211_crypto_settings *crypto,
3248 enum nl80211_iftype iftype)
3249{
3250 const struct ieee80211_cipher_scheme *cs;
3251 int headroom = IEEE80211_ENCRYPT_HEADROOM;
3252 int i;
3253
3254 for (i = 0; i < crypto->n_ciphers_pairwise; i++) {
3255 cs = ieee80211_cs_get(local, crypto->ciphers_pairwise[i],
3256 iftype);
3257
3258 if (cs && headroom < cs->hdr_len)
3259 headroom = cs->hdr_len;
3260 }
3261
3262 cs = ieee80211_cs_get(local, crypto->cipher_group, iftype);
3263 if (cs && headroom < cs->hdr_len)
3264 headroom = cs->hdr_len;
3265
3266 return headroom;
3267}
a7022e65
FF		 3268
3269static bool
3270ieee80211_extend_noa_desc(struct ieee80211_noa_data *data, u32 tsf, int i)
3271{
3272 s32 end = data->desc[i].start + data->desc[i].duration - (tsf + 1);
3273 int skip;
3274
3275 if (end > 0)
3276 return false;
3277
519ee691
JD		 3278 /* One shot NOA */
3279 if (data->count[i] == 1)
3280 return false;
3281
3282 if (data->desc[i].interval == 0)
3283 return false;
3284
a7022e65
FF		 3285 /* End time is in the past, check for repetitions */
3286 skip = DIV_ROUND_UP(-end, data->desc[i].interval);
3287 if (data->count[i] < 255) {
3288 if (data->count[i] <= skip) {
3289 data->count[i] = 0;
3290 return false;
3291 }
3292
3293 data->count[i] -= skip;
3294 }
3295
3296 data->desc[i].start += skip * data->desc[i].interval;
3297
3298 return true;
3299}
3300
3301static bool
3302ieee80211_extend_absent_time(struct ieee80211_noa_data *data, u32 tsf,
3303 s32 *offset)
3304{
3305 bool ret = false;
3306 int i;
3307
3308 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) {
3309 s32 cur;
3310
3311 if (!data->count[i])
3312 continue;
3313
3314 if (ieee80211_extend_noa_desc(data, tsf + *offset, i))
3315 ret = true;
3316
3317 cur = data->desc[i].start - tsf;
3318 if (cur > *offset)
3319 continue;
3320
3321 cur = data->desc[i].start + data->desc[i].duration - tsf;
3322 if (cur > *offset)
3323 *offset = cur;
3324 }
3325
3326 return ret;
3327}
3328
3329static u32
3330ieee80211_get_noa_absent_time(struct ieee80211_noa_data *data, u32 tsf)
3331{
3332 s32 offset = 0;
3333 int tries = 0;
3334 /*
3335 * arbitrary limit, used to avoid infinite loops when combined NoA
3336 * descriptors cover the full time period.
3337 */
3338 int max_tries = 5;
3339
3340 ieee80211_extend_absent_time(data, tsf, &offset);
3341 do {
3342 if (!ieee80211_extend_absent_time(data, tsf, &offset))
3343 break;
3344
3345 tries++;
3346 } while (tries < max_tries);
3347
3348 return offset;
3349}
3350
3351void ieee80211_update_p2p_noa(struct ieee80211_noa_data *data, u32 tsf)
3352{
3353 u32 next_offset = BIT(31) - 1;
3354 int i;
3355
3356 data->absent = 0;
3357 data->has_next_tsf = false;
3358 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) {
3359 s32 start;
3360
3361 if (!data->count[i])
3362 continue;
3363
3364 ieee80211_extend_noa_desc(data, tsf, i);
3365 start = data->desc[i].start - tsf;
3366 if (start <= 0)
3367 data->absent |= BIT(i);
3368
3369 if (next_offset > start)
3370 next_offset = start;
3371
3372 data->has_next_tsf = true;
3373 }
3374
3375 if (data->absent)
3376 next_offset = ieee80211_get_noa_absent_time(data, tsf);
3377
3378 data->next_tsf = tsf + next_offset;
3379}
3380EXPORT_SYMBOL(ieee80211_update_p2p_noa);
3381
3382int ieee80211_parse_p2p_noa(const struct ieee80211_p2p_noa_attr *attr,
3383 struct ieee80211_noa_data *data, u32 tsf)
3384{
3385 int ret = 0;
3386 int i;
3387
3388 memset(data, 0, sizeof(*data));
3389
3390 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) {
3391 const struct ieee80211_p2p_noa_desc *desc = &attr->desc[i];
3392
3393 if (!desc->count || !desc->duration)
3394 continue;
3395
3396 data->count[i] = desc->count;
3397 data->desc[i].start = le32_to_cpu(desc->start_time);
3398 data->desc[i].duration = le32_to_cpu(desc->duration);
3399 data->desc[i].interval = le32_to_cpu(desc->interval);
3400
3401 if (data->count[i] > 1 &&
3402 data->desc[i].interval < data->desc[i].duration)
3403 continue;
3404
3405 ieee80211_extend_noa_desc(data, tsf, i);
3406 ret++;
3407 }
3408
3409 if (ret)
3410 ieee80211_update_p2p_noa(data, tsf);
3411
3412 return ret;
3413}
3414EXPORT_SYMBOL(ieee80211_parse_p2p_noa);
057d5f4b
TP		 3415
3416void ieee80211_recalc_dtim(struct ieee80211_local *local,
3417 struct ieee80211_sub_if_data *sdata)
3418{
3419 u64 tsf = drv_get_tsf(local, sdata);
3420 u64 dtim_count = 0;
3421 u16 beacon_int = sdata->vif.bss_conf.beacon_int * 1024;
3422 u8 dtim_period = sdata->vif.bss_conf.dtim_period;
3423 struct ps_data *ps;
3424 u8 bcns_from_dtim;
3425
3426 if (tsf == -1ULL || !beacon_int || !dtim_period)
3427 return;
3428
3429 if (sdata->vif.type == NL80211_IFTYPE_AP ||
3430 sdata->vif.type == NL80211_IFTYPE_AP_VLAN) {
3431 if (!sdata->bss)
3432 return;
3433
3434 ps = &sdata->bss->ps;
3435 } else if (ieee80211_vif_is_mesh(&sdata->vif)) {
3436 ps = &sdata->u.mesh.ps;
3437 } else {
3438 return;
3439 }
3440
3441 /*
3442 * actually finds last dtim_count, mac80211 will update in
3443 * __beacon_add_tim().
3444 * dtim_count = dtim_period - (tsf / bcn_int) % dtim_period
3445 */
3446 do_div(tsf, beacon_int);
3447 bcns_from_dtim = do_div(tsf, dtim_period);
3448 /* just had a DTIM */
3449 if (!bcns_from_dtim)
3450 dtim_count = 0;
3451 else
3452 dtim_count = dtim_period - bcns_from_dtim;
3453
3454 ps->dtim_count = dtim_count;
3455}
73de86a3 3456
71e6195e
MK		 3457static u8 ieee80211_chanctx_radar_detect(struct ieee80211_local *local,
3458 struct ieee80211_chanctx *ctx)
3459{
3460 struct ieee80211_sub_if_data *sdata;
3461 u8 radar_detect = 0;
3462
3463 lockdep_assert_held(&local->chanctx_mtx);
3464
3465 if (WARN_ON(ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED))
3466 return 0;
3467
3468 list_for_each_entry(sdata, &ctx->reserved_vifs, reserved_chanctx_list)
3469 if (sdata->reserved_radar_required)
3470 radar_detect |= BIT(sdata->reserved_chandef.width);
3471
3472 /*
3473 * An in-place reservation context should not have any assigned vifs
3474 * until it replaces the other context.
3475 */
3476 WARN_ON(ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER &&
3477 !list_empty(&ctx->assigned_vifs));
3478
3479 list_for_each_entry(sdata, &ctx->assigned_vifs, assigned_chanctx_list)
3480 if (sdata->radar_required)
3481 radar_detect |= BIT(sdata->vif.bss_conf.chandef.width);
3482
3483 return radar_detect;
3484}
3485
73de86a3
LC		 3486int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata,
3487 const struct cfg80211_chan_def *chandef,
3488 enum ieee80211_chanctx_mode chanmode,
3489 u8 radar_detect)
3490{
3491 struct ieee80211_local *local = sdata->local;
3492 struct ieee80211_sub_if_data *sdata_iter;
3493 enum nl80211_iftype iftype = sdata->wdev.iftype;
73de86a3 3494 struct ieee80211_chanctx *ctx;
73de86a3 3495 int total = 1;
e227300c
PK		 3496 struct iface_combination_params params = {
3497 .radar_detect = radar_detect,
3498 };
73de86a3
LC		 3499
3500 lockdep_assert_held(&local->chanctx_mtx);
3501
3502 if (WARN_ON(hweight32(radar_detect) > 1))
3503 return -EINVAL;
3504
b6a55015
LC		 3505 if (WARN_ON(chandef && chanmode == IEEE80211_CHANCTX_SHARED &&
3506 !chandef->chan))
73de86a3
LC		 3507 return -EINVAL;
3508
3509 if (WARN_ON(iftype >= NUM_NL80211_IFTYPES))
3510 return -EINVAL;
3511
ac668afe
JB		 3512 if (sdata->vif.type == NL80211_IFTYPE_AP ||
3513 sdata->vif.type == NL80211_IFTYPE_MESH_POINT) {
3514 /*
3515 * always passing this is harmless, since it'll be the
3516 * same value that cfg80211 finds if it finds the same
3517 * interface ... and that's always allowed
3518 */
3519 params.new_beacon_int = sdata->vif.bss_conf.beacon_int;
3520 }
3521
73de86a3
LC		 3522 /* Always allow software iftypes */
3523 if (local->hw.wiphy->software_iftypes & BIT(iftype)) {
3524 if (radar_detect)
3525 return -EINVAL;
3526 return 0;
3527 }
3528
e227300c
PK		 3529 if (chandef)
3530 params.num_different_channels = 1;
73de86a3
LC		 3531
3532 if (iftype != NL80211_IFTYPE_UNSPECIFIED)
e227300c 3533 params.iftype_num[iftype] = 1;
73de86a3
LC		 3534
3535 list_for_each_entry(ctx, &local->chanctx_list, list) {
5bcae31d
MK		 3536 if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED)
3537 continue;
e227300c
PK		 3538 params.radar_detect |=
3539 ieee80211_chanctx_radar_detect(local, ctx);
73de86a3 3540 if (ctx->mode == IEEE80211_CHANCTX_EXCLUSIVE) {
e227300c 3541 params.num_different_channels++;
73de86a3
LC		 3542 continue;
3543 }
b6a55015 3544 if (chandef && chanmode == IEEE80211_CHANCTX_SHARED &&
73de86a3
LC		 3545 cfg80211_chandef_compatible(chandef,
3546 &ctx->conf.def))
3547 continue;
e227300c 3548 params.num_different_channels++;
73de86a3
LC		 3549 }
3550
3551 list_for_each_entry_rcu(sdata_iter, &local->interfaces, list) {
3552 struct wireless_dev *wdev_iter;
3553
3554 wdev_iter = &sdata_iter->wdev;
3555
3556 if (sdata_iter == sdata ||
0f611d28 3557 !ieee80211_sdata_running(sdata_iter) ||
73de86a3
LC		 3558 local->hw.wiphy->software_iftypes & BIT(wdev_iter->iftype))
3559 continue;
3560
e227300c 3561 params.iftype_num[wdev_iter->iftype]++;
73de86a3
LC		 3562 total++;
3563 }
3564
e227300c 3565 if (total == 1 && !params.radar_detect)
73de86a3
LC		 3566 return 0;
3567
e227300c 3568 return cfg80211_check_combinations(local->hw.wiphy, &params);
73de86a3 3569}
6fa001bc
MK		 3570
3571static void
3572ieee80211_iter_max_chans(const struct ieee80211_iface_combination *c,
3573 void *data)
3574{
3575 u32 *max_num_different_channels = data;
3576
3577 *max_num_different_channels = max(*max_num_different_channels,
3578 c->num_different_channels);
3579}
3580
3581int ieee80211_max_num_channels(struct ieee80211_local *local)
3582{
3583 struct ieee80211_sub_if_data *sdata;
6fa001bc 3584 struct ieee80211_chanctx *ctx;
6fa001bc
MK		 3585 u32 max_num_different_channels = 1;
3586 int err;
e227300c 3587 struct iface_combination_params params = {0};
6fa001bc
MK		 3588
3589 lockdep_assert_held(&local->chanctx_mtx);
3590
3591 list_for_each_entry(ctx, &local->chanctx_list, list) {
5bcae31d
MK		 3592 if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED)
3593 continue;
3594
e227300c 3595 params.num_different_channels++;
6fa001bc 3596
e227300c
PK		 3597 params.radar_detect |=
3598 ieee80211_chanctx_radar_detect(local, ctx);
6fa001bc
MK		 3599 }
3600
3601 list_for_each_entry_rcu(sdata, &local->interfaces, list)
e227300c 3602 params.iftype_num[sdata->wdev.iftype]++;
6fa001bc 3603
e227300c
PK		 3604 err = cfg80211_iter_combinations(local->hw.wiphy, &params,
3605 ieee80211_iter_max_chans,
6fa001bc
MK		 3606 &max_num_different_channels);
3607 if (err < 0)
3608 return err;
3609
3610 return max_num_different_channels;
3611}
40b861a0
AN		 3612
3613u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo)
3614{
3615 *buf++ = WLAN_EID_VENDOR_SPECIFIC;
3616 *buf++ = 7; /* len */
3617 *buf++ = 0x00; /* Microsoft OUI 00:50:F2 */
3618 *buf++ = 0x50;
3619 *buf++ = 0xf2;
3620 *buf++ = 2; /* WME */
3621 *buf++ = 0; /* WME info */
3622 *buf++ = 1; /* WME ver */
3623 *buf++ = qosinfo; /* U-APSD no in use */
3624
3625 return buf;
3626}
ba8c3d6f 3627
f2ac7e30
MK		 3628void ieee80211_txq_get_depth(struct ieee80211_txq *txq,
3629 unsigned long *frame_cnt,
3630 unsigned long *byte_cnt)
3631{
3632 struct txq_info *txqi = to_txq_info(txq);
bb42f2d1
THJ		 3633 u32 frag_cnt = 0, frag_bytes = 0;
3634 struct sk_buff *skb;
3635
3636 skb_queue_walk(&txqi->frags, skb) {
3637 frag_cnt++;
3638 frag_bytes += skb->len;
3639 }
f2ac7e30
MK		 3640
3641 if (frame_cnt)
bb42f2d1 3642 *frame_cnt = txqi->tin.backlog_packets + frag_cnt;
f2ac7e30
MK		 3643
3644 if (byte_cnt)
bb42f2d1 3645 *byte_cnt = txqi->tin.backlog_bytes + frag_bytes;
f2ac7e30
MK		 3646}
3647EXPORT_SYMBOL(ieee80211_txq_get_depth);
f438ceb8
EG		 3648
3649const u8 ieee80211_ac_to_qos_mask[IEEE80211_NUM_ACS] = {
3650 IEEE80211_WMM_IE_STA_QOSINFO_AC_VO,
3651 IEEE80211_WMM_IE_STA_QOSINFO_AC_VI,
3652 IEEE80211_WMM_IE_STA_QOSINFO_AC_BE,
3653 IEEE80211_WMM_IE_STA_QOSINFO_AC_BK
3654};
Linux 6.x block layer and io_uring tree(s)