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Merge remote-tracking branch 'md/for-next'
[deliverable/linux.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
f4a0f0c5 7 * Copyright (C) 2015-2016 Intel Deutschland GmbH
c2d1560a
JB		 8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
12 *
13 * utilities for mac80211
14 */
15
16#include <net/mac80211.h>
17#include <linux/netdevice.h>
bc3b2d7f 18#include <linux/export.h>
c2d1560a
JB		 19#include <linux/types.h>
20#include <linux/slab.h>
21#include <linux/skbuff.h>
22#include <linux/etherdevice.h>
23#include <linux/if_arp.h>
c2d1560a 24#include <linux/bitmap.h>
dd76986b 25#include <linux/crc32.h>
881d966b 26#include <net/net_namespace.h>
c2d1560a 27#include <net/cfg80211.h>
dabeb344 28#include <net/rtnetlink.h>
c2d1560a
JB		 29
30#include "ieee80211_i.h"
24487981 31#include "driver-ops.h"
2c8dccc7 32#include "rate.h"
ee385855 33#include "mesh.h"
c2d1560a 34#include "wme.h"
f2753ddb 35#include "led.h"
fffd0934 36#include "wep.h"
c2d1560a
JB		 37
38/* privid for wiphys to determine whether they belong to us or not */
8a47cea7 39const void *const mac80211_wiphy_privid = &mac80211_wiphy_privid;
c2d1560a 40
9a95371a
LR		 41struct ieee80211_hw *wiphy_to_ieee80211_hw(struct wiphy *wiphy)
42{
43 struct ieee80211_local *local;
44 BUG_ON(!wiphy);
45
46 local = wiphy_priv(wiphy);
47 return &local->hw;
48}
49EXPORT_SYMBOL(wiphy_to_ieee80211_hw);
c2d1560a 50
5cf121c3 51void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx)
c2d1560a 52{
252b86c4 53 struct sk_buff *skb;
2de8e0d9
JB		 54 struct ieee80211_hdr *hdr;
55
252b86c4 56 skb_queue_walk(&tx->skbs, skb) {
2de8e0d9
JB		 57 hdr = (struct ieee80211_hdr *) skb->data;
58 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
252b86c4 59 }
c2d1560a
JB		 60}
61
57fbcce3 62int ieee80211_frame_duration(enum nl80211_band band, size_t len,
438b61b7
SW		 63 int rate, int erp, int short_preamble,
64 int shift)
c2d1560a
JB		 65{
66 int dur;
67
68 /* calculate duration (in microseconds, rounded up to next higher
69 * integer if it includes a fractional microsecond) to send frame of
70 * len bytes (does not include FCS) at the given rate. Duration will
71 * also include SIFS.
72 *
73 * rate is in 100 kbps, so divident is multiplied by 10 in the
74 * DIV_ROUND_UP() operations.
438b61b7
SW		 75 *
76 * shift may be 2 for 5 MHz channels or 1 for 10 MHz channels, and
77 * is assumed to be 0 otherwise.
c2d1560a
JB		 78 */
79
57fbcce3 80 if (band == NL80211_BAND_5GHZ || erp) {
c2d1560a
JB		 81 /*
82 * OFDM:
83 *
84 * N_DBPS = DATARATE x 4
85 * N_SYM = Ceiling((16+8xLENGTH+6) / N_DBPS)
86 * (16 = SIGNAL time, 6 = tail bits)
87 * TXTIME = T_PREAMBLE + T_SIGNAL + T_SYM x N_SYM + Signal Ext
88 *
89 * T_SYM = 4 usec
438b61b7 90 * 802.11a - 18.5.2: aSIFSTime = 16 usec
c2d1560a
JB		 91 * 802.11g - 19.8.4: aSIFSTime = 10 usec +
92 * signal ext = 6 usec
93 */
c2d1560a 94 dur = 16; /* SIFS + signal ext */
438b61b7
SW		 95 dur += 16; /* IEEE 802.11-2012 18.3.2.4: T_PREAMBLE = 16 usec */
96 dur += 4; /* IEEE 802.11-2012 18.3.2.4: T_SIGNAL = 4 usec */
438b61b7
SW		 97
98 /* IEEE 802.11-2012 18.3.2.4: all values above are:
99 * * times 4 for 5 MHz
100 * * times 2 for 10 MHz
101 */
102 dur *= 1 << shift;
2103dec1
SW		 103
104 /* rates should already consider the channel bandwidth,
105 * don't apply divisor again.
106 */
107 dur += 4 * DIV_ROUND_UP((16 + 8 * (len + 4) + 6) * 10,
108 4 * rate); /* T_SYM x N_SYM */
c2d1560a
JB		 109 } else {
110 /*
111 * 802.11b or 802.11g with 802.11b compatibility:
112 * 18.3.4: TXTIME = PreambleLength + PLCPHeaderTime +
113 * Ceiling(((LENGTH+PBCC)x8)/DATARATE). PBCC=0.
114 *
115 * 802.11 (DS): 15.3.3, 802.11b: 18.3.4
116 * aSIFSTime = 10 usec
117 * aPreambleLength = 144 usec or 72 usec with short preamble
118 * aPLCPHeaderLength = 48 usec or 24 usec with short preamble
119 */
120 dur = 10; /* aSIFSTime = 10 usec */
121 dur += short_preamble ? (72 + 24) : (144 + 48);
122
123 dur += DIV_ROUND_UP(8 * (len + 4) * 10, rate);
124 }
125
126 return dur;
127}
128
129/* Exported duration function for driver use */
32bfd35d
JB		 130__le16 ieee80211_generic_frame_duration(struct ieee80211_hw *hw,
131 struct ieee80211_vif *vif,
57fbcce3 132 enum nl80211_band band,
8318d78a
JB		 133 size_t frame_len,
134 struct ieee80211_rate *rate)
c2d1560a 135{
25d834e1 136 struct ieee80211_sub_if_data *sdata;
c2d1560a 137 u16 dur;
438b61b7 138 int erp, shift = 0;
25d834e1 139 bool short_preamble = false;
c2d1560a 140
8318d78a 141 erp = 0;
25d834e1
JB		 142 if (vif) {
143 sdata = vif_to_sdata(vif);
bda3933a 144 short_preamble = sdata->vif.bss_conf.use_short_preamble;
25d834e1
JB		 145 if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE)
146 erp = rate->flags & IEEE80211_RATE_ERP_G;
438b61b7 147 shift = ieee80211_vif_get_shift(vif);
25d834e1 148 }
8318d78a 149
4ee73f33 150 dur = ieee80211_frame_duration(band, frame_len, rate->bitrate, erp,
438b61b7 151 short_preamble, shift);
c2d1560a
JB		 152
153 return cpu_to_le16(dur);
154}
155EXPORT_SYMBOL(ieee80211_generic_frame_duration);
156
32bfd35d
JB		 157__le16 ieee80211_rts_duration(struct ieee80211_hw *hw,
158 struct ieee80211_vif *vif, size_t frame_len,
e039fa4a 159 const struct ieee80211_tx_info *frame_txctl)
c2d1560a
JB		 160{
161 struct ieee80211_local *local = hw_to_local(hw);
162 struct ieee80211_rate *rate;
25d834e1 163 struct ieee80211_sub_if_data *sdata;
471b3efd 164 bool short_preamble;
2103dec1 165 int erp, shift = 0, bitrate;
c2d1560a 166 u16 dur;
2e92e6f2
JB		 167 struct ieee80211_supported_band *sband;
168
4ee73f33 169 sband = local->hw.wiphy->bands[frame_txctl->band];
c2d1560a 170
25d834e1 171 short_preamble = false;
7e9ed188 172
e039fa4a 173 rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx];
8318d78a
JB		 174
175 erp = 0;
25d834e1
JB		 176 if (vif) {
177 sdata = vif_to_sdata(vif);
bda3933a 178 short_preamble = sdata->vif.bss_conf.use_short_preamble;
25d834e1
JB		 179 if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE)
180 erp = rate->flags & IEEE80211_RATE_ERP_G;
438b61b7 181 shift = ieee80211_vif_get_shift(vif);
25d834e1 182 }
c2d1560a 183
2103dec1
SW		 184 bitrate = DIV_ROUND_UP(rate->bitrate, 1 << shift);
185
c2d1560a 186 /* CTS duration */
2103dec1 187 dur = ieee80211_frame_duration(sband->band, 10, bitrate,
438b61b7 188 erp, short_preamble, shift);
c2d1560a 189 /* Data frame duration */
2103dec1 190 dur += ieee80211_frame_duration(sband->band, frame_len, bitrate,
438b61b7 191 erp, short_preamble, shift);
c2d1560a 192 /* ACK duration */
2103dec1 193 dur += ieee80211_frame_duration(sband->band, 10, bitrate,
438b61b7 194 erp, short_preamble, shift);
c2d1560a
JB		 195
196 return cpu_to_le16(dur);
197}
198EXPORT_SYMBOL(ieee80211_rts_duration);
199
32bfd35d
JB		 200__le16 ieee80211_ctstoself_duration(struct ieee80211_hw *hw,
201 struct ieee80211_vif *vif,
c2d1560a 202 size_t frame_len,
e039fa4a 203 const struct ieee80211_tx_info *frame_txctl)
c2d1560a
JB		 204{
205 struct ieee80211_local *local = hw_to_local(hw);
206 struct ieee80211_rate *rate;
25d834e1 207 struct ieee80211_sub_if_data *sdata;
471b3efd 208 bool short_preamble;
2103dec1 209 int erp, shift = 0, bitrate;
c2d1560a 210 u16 dur;
2e92e6f2
JB		 211 struct ieee80211_supported_band *sband;
212
4ee73f33 213 sband = local->hw.wiphy->bands[frame_txctl->band];
c2d1560a 214
25d834e1 215 short_preamble = false;
7e9ed188 216
e039fa4a 217 rate = &sband->bitrates[frame_txctl->control.rts_cts_rate_idx];
8318d78a 218 erp = 0;
25d834e1
JB		 219 if (vif) {
220 sdata = vif_to_sdata(vif);
bda3933a 221 short_preamble = sdata->vif.bss_conf.use_short_preamble;
25d834e1
JB		 222 if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE)
223 erp = rate->flags & IEEE80211_RATE_ERP_G;
438b61b7 224 shift = ieee80211_vif_get_shift(vif);
25d834e1 225 }
c2d1560a 226
2103dec1
SW		 227 bitrate = DIV_ROUND_UP(rate->bitrate, 1 << shift);
228
c2d1560a 229 /* Data frame duration */
2103dec1 230 dur = ieee80211_frame_duration(sband->band, frame_len, bitrate,
438b61b7 231 erp, short_preamble, shift);
e039fa4a 232 if (!(frame_txctl->flags & IEEE80211_TX_CTL_NO_ACK)) {
c2d1560a 233 /* ACK duration */
2103dec1 234 dur += ieee80211_frame_duration(sband->band, 10, bitrate,
438b61b7 235 erp, short_preamble, shift);
c2d1560a
JB		 236 }
237
238 return cpu_to_le16(dur);
239}
240EXPORT_SYMBOL(ieee80211_ctstoself_duration);
241
3a25a8c8
JB		 242void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue)
243{
244 struct ieee80211_sub_if_data *sdata;
a6f38ac3
JB		 245 int n_acs = IEEE80211_NUM_ACS;
246
80a83cfc
MK		 247 if (local->ops->wake_tx_queue)
248 return;
249
a6f38ac3
JB		 250 if (local->hw.queues < IEEE80211_NUM_ACS)
251 n_acs = 1;
3a25a8c8
JB		 252
253 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
254 int ac;
255
f142c6b9
JB		 256 if (!sdata->dev)
257 continue;
258
3a25a8c8
JB		 259 if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE &&
260 local->queue_stop_reasons[sdata->vif.cab_queue] != 0)
261 continue;
262
a6f38ac3 263 for (ac = 0; ac < n_acs; ac++) {
3a25a8c8
JB		 264 int ac_queue = sdata->vif.hw_queue[ac];
265
266 if (ac_queue == queue ||
267 (sdata->vif.cab_queue == queue &&
268 local->queue_stop_reasons[ac_queue] == 0 &&
269 skb_queue_empty(&local->pending[ac_queue])))
270 netif_wake_subqueue(sdata->dev, ac);
271 }
272 }
273}
274
ce7c9111 275static void __ieee80211_wake_queue(struct ieee80211_hw *hw, int queue,
cca07b00
LC		 276 enum queue_stop_reason reason,
277 bool refcounted)
c2d1560a
JB		 278{
279 struct ieee80211_local *local = hw_to_local(hw);
280
b5878a2d
JB		 281 trace_wake_queue(local, queue, reason);
282
e4e72fb4
JB		 283 if (WARN_ON(queue >= hw->queues))
284 return;
ce7c9111 285
ada15125
JB		 286 if (!test_bit(reason, &local->queue_stop_reasons[queue]))
287 return;
288
856142cd 289 if (!refcounted) {
cca07b00 290 local->q_stop_reasons[queue][reason] = 0;
856142cd 291 } else {
cca07b00 292 local->q_stop_reasons[queue][reason]--;
856142cd
JB		 293 if (WARN_ON(local->q_stop_reasons[queue][reason] < 0))
294 local->q_stop_reasons[queue][reason] = 0;
295 }
cca07b00
LC		 296
297 if (local->q_stop_reasons[queue][reason] == 0)
298 __clear_bit(reason, &local->queue_stop_reasons[queue]);
96f5e66e
JB		 299
300 if (local->queue_stop_reasons[queue] != 0)
301 /* someone still has this queue stopped */
302 return;
303
7236fe29
JB		 304 if (skb_queue_empty(&local->pending[queue])) {
305 rcu_read_lock();
3a25a8c8 306 ieee80211_propagate_queue_wake(local, queue);
7236fe29
JB		 307 rcu_read_unlock();
308 } else
3b8d81e0 309 tasklet_schedule(&local->tx_pending_tasklet);
c2d1560a 310}
ce7c9111 311
96f5e66e 312void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
cca07b00
LC		 313 enum queue_stop_reason reason,
314 bool refcounted)
ce7c9111
KV		 315{
316 struct ieee80211_local *local = hw_to_local(hw);
317 unsigned long flags;
318
319 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
cca07b00 320 __ieee80211_wake_queue(hw, queue, reason, refcounted);
ce7c9111
KV		 321 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
322}
323
324void ieee80211_wake_queue(struct ieee80211_hw *hw, int queue)
325{
326 ieee80211_wake_queue_by_reason(hw, queue,
cca07b00
LC		 327 IEEE80211_QUEUE_STOP_REASON_DRIVER,
328 false);
ce7c9111 329}
c2d1560a
JB		 330EXPORT_SYMBOL(ieee80211_wake_queue);
331
ce7c9111 332static void __ieee80211_stop_queue(struct ieee80211_hw *hw, int queue,
cca07b00
LC		 333 enum queue_stop_reason reason,
334 bool refcounted)
c2d1560a
JB		 335{
336 struct ieee80211_local *local = hw_to_local(hw);
cf0277e7 337 struct ieee80211_sub_if_data *sdata;
a6f38ac3 338 int n_acs = IEEE80211_NUM_ACS;
c2d1560a 339
b5878a2d
JB		 340 trace_stop_queue(local, queue, reason);
341
e4e72fb4
JB		 342 if (WARN_ON(queue >= hw->queues))
343 return;
96f5e66e 344
cca07b00
LC		 345 if (!refcounted)
346 local->q_stop_reasons[queue][reason] = 1;
347 else
348 local->q_stop_reasons[queue][reason]++;
ada15125 349
cca07b00
LC		 350 if (__test_and_set_bit(reason, &local->queue_stop_reasons[queue]))
351 return;
cf0277e7 352
80a83cfc
MK		 353 if (local->ops->wake_tx_queue)
354 return;
355
a6f38ac3
JB		 356 if (local->hw.queues < IEEE80211_NUM_ACS)
357 n_acs = 1;
358
cf0277e7 359 rcu_read_lock();
3a25a8c8
JB		 360 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
361 int ac;
362
f142c6b9
JB		 363 if (!sdata->dev)
364 continue;
365
a6f38ac3 366 for (ac = 0; ac < n_acs; ac++) {
3a25a8c8
JB		 367 if (sdata->vif.hw_queue[ac] == queue ||
368 sdata->vif.cab_queue == queue)
369 netif_stop_subqueue(sdata->dev, ac);
370 }
371 }
cf0277e7 372 rcu_read_unlock();
c2d1560a 373}
ce7c9111 374
96f5e66e 375void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
cca07b00
LC		 376 enum queue_stop_reason reason,
377 bool refcounted)
ce7c9111
KV		 378{
379 struct ieee80211_local *local = hw_to_local(hw);
380 unsigned long flags;
381
382 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
cca07b00 383 __ieee80211_stop_queue(hw, queue, reason, refcounted);
ce7c9111
KV		 384 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
385}
386
387void ieee80211_stop_queue(struct ieee80211_hw *hw, int queue)
388{
389 ieee80211_stop_queue_by_reason(hw, queue,
cca07b00
LC		 390 IEEE80211_QUEUE_STOP_REASON_DRIVER,
391 false);
ce7c9111 392}
c2d1560a
JB		 393EXPORT_SYMBOL(ieee80211_stop_queue);
394
8f77f384
JB		 395void ieee80211_add_pending_skb(struct ieee80211_local *local,
396 struct sk_buff *skb)
397{
398 struct ieee80211_hw *hw = &local->hw;
399 unsigned long flags;
a7bc376c 400 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
3a25a8c8 401 int queue = info->hw_queue;
a7bc376c
JB		 402
403 if (WARN_ON(!info->control.vif)) {
d4fa14cd 404 ieee80211_free_txskb(&local->hw, skb);
a7bc376c
JB		 405 return;
406 }
8f77f384
JB		 407
408 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
cca07b00
LC		 409 __ieee80211_stop_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
410 false);
3b8d81e0 411 __skb_queue_tail(&local->pending[queue], skb);
cca07b00
LC		 412 __ieee80211_wake_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
413 false);
8f77f384
JB		 414 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
415}
416
e3685e03
JB		 417void ieee80211_add_pending_skbs(struct ieee80211_local *local,
418 struct sk_buff_head *skbs)
8f77f384
JB		 419{
420 struct ieee80211_hw *hw = &local->hw;
421 struct sk_buff *skb;
422 unsigned long flags;
b0b97a8a 423 int queue, i;
8f77f384
JB		 424
425 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
8f77f384 426 while ((skb = skb_dequeue(skbs))) {
a7bc376c
JB		 427 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
428
429 if (WARN_ON(!info->control.vif)) {
d4fa14cd 430 ieee80211_free_txskb(&local->hw, skb);
a7bc376c
JB		 431 continue;
432 }
433
3a25a8c8 434 queue = info->hw_queue;
4644ae89
JB		 435
436 __ieee80211_stop_queue(hw, queue,
cca07b00
LC		 437 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
438 false);
4644ae89 439
3b8d81e0 440 __skb_queue_tail(&local->pending[queue], skb);
8f77f384
JB		 441 }
442
3b8d81e0 443 for (i = 0; i < hw->queues; i++)
8f77f384 444 __ieee80211_wake_queue(hw, i,
cca07b00
LC		 445 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
446 false);
8f77f384 447 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
8f77f384
JB		 448}
449
ce7c9111 450void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
445ea4e8 451 unsigned long queues,
cca07b00
LC		 452 enum queue_stop_reason reason,
453 bool refcounted)
c2d1560a 454{
ce7c9111
KV		 455 struct ieee80211_local *local = hw_to_local(hw);
456 unsigned long flags;
c2d1560a
JB		 457 int i;
458
ce7c9111
KV		 459 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
460
445ea4e8 461 for_each_set_bit(i, &queues, hw->queues)
cca07b00 462 __ieee80211_stop_queue(hw, i, reason, refcounted);
ce7c9111
KV		 463
464 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
465}
466
467void ieee80211_stop_queues(struct ieee80211_hw *hw)
468{
445ea4e8 469 ieee80211_stop_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
cca07b00
LC		 470 IEEE80211_QUEUE_STOP_REASON_DRIVER,
471 false);
c2d1560a
JB		 472}
473EXPORT_SYMBOL(ieee80211_stop_queues);
474
92ab8535
TW		 475int ieee80211_queue_stopped(struct ieee80211_hw *hw, int queue)
476{
477 struct ieee80211_local *local = hw_to_local(hw);
3b8d81e0
JB		 478 unsigned long flags;
479 int ret;
96f5e66e 480
e4e72fb4
JB		 481 if (WARN_ON(queue >= hw->queues))
482 return true;
96f5e66e 483
3b8d81e0 484 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
2419ea14
TP		 485 ret = test_bit(IEEE80211_QUEUE_STOP_REASON_DRIVER,
486 &local->queue_stop_reasons[queue]);
3b8d81e0
JB		 487 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
488 return ret;
92ab8535
TW		 489}
490EXPORT_SYMBOL(ieee80211_queue_stopped);
491
ce7c9111 492void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
445ea4e8 493 unsigned long queues,
cca07b00
LC		 494 enum queue_stop_reason reason,
495 bool refcounted)
c2d1560a 496{
ce7c9111
KV		 497 struct ieee80211_local *local = hw_to_local(hw);
498 unsigned long flags;
c2d1560a
JB		 499 int i;
500
ce7c9111
KV		 501 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
502
445ea4e8 503 for_each_set_bit(i, &queues, hw->queues)
cca07b00 504 __ieee80211_wake_queue(hw, i, reason, refcounted);
ce7c9111
KV		 505
506 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
507}
508
509void ieee80211_wake_queues(struct ieee80211_hw *hw)
510{
445ea4e8 511 ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
cca07b00
LC		 512 IEEE80211_QUEUE_STOP_REASON_DRIVER,
513 false);
c2d1560a
JB		 514}
515EXPORT_SYMBOL(ieee80211_wake_queues);
dabeb344 516
26da23b6
LC		 517static unsigned int
518ieee80211_get_vif_queues(struct ieee80211_local *local,
519 struct ieee80211_sub_if_data *sdata)
39ecc01d 520{
26da23b6 521 unsigned int queues;
39ecc01d 522
30686bf7 523 if (sdata && ieee80211_hw_check(&local->hw, QUEUE_CONTROL)) {
39ecc01d
JB		 524 int ac;
525
526 queues = 0;
527
528 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
529 queues |= BIT(sdata->vif.hw_queue[ac]);
530 if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE)
531 queues |= BIT(sdata->vif.cab_queue);
532 } else {
533 /* all queues */
534 queues = BIT(local->hw.queues) - 1;
535 }
536
26da23b6
LC		 537 return queues;
538}
539
4f9610d5
LK		 540void __ieee80211_flush_queues(struct ieee80211_local *local,
541 struct ieee80211_sub_if_data *sdata,
3b24f4c6 542 unsigned int queues, bool drop)
26da23b6 543{
26da23b6
LC		 544 if (!local->ops->flush)
545 return;
546
4f9610d5
LK		 547 /*
548 * If no queue was set, or if the HW doesn't support
549 * IEEE80211_HW_QUEUE_CONTROL - flush all queues
550 */
30686bf7 551 if (!queues || !ieee80211_hw_check(&local->hw, QUEUE_CONTROL))
4f9610d5 552 queues = ieee80211_get_vif_queues(local, sdata);
26da23b6 553
59f48fe2 554 ieee80211_stop_queues_by_reason(&local->hw, queues,
cca07b00
LC		 555 IEEE80211_QUEUE_STOP_REASON_FLUSH,
556 false);
445ea4e8 557
3b24f4c6 558 drv_flush(local, sdata, queues, drop);
445ea4e8 559
59f48fe2 560 ieee80211_wake_queues_by_reason(&local->hw, queues,
cca07b00
LC		 561 IEEE80211_QUEUE_STOP_REASON_FLUSH,
562 false);
39ecc01d
JB		 563}
564
4f9610d5 565void ieee80211_flush_queues(struct ieee80211_local *local,
3b24f4c6 566 struct ieee80211_sub_if_data *sdata, bool drop)
4f9610d5 567{
3b24f4c6 568 __ieee80211_flush_queues(local, sdata, 0, drop);
4f9610d5
LK		 569}
570
26da23b6
LC		 571void ieee80211_stop_vif_queues(struct ieee80211_local *local,
572 struct ieee80211_sub_if_data *sdata,
573 enum queue_stop_reason reason)
574{
575 ieee80211_stop_queues_by_reason(&local->hw,
576 ieee80211_get_vif_queues(local, sdata),
577 reason, true);
578}
579
580void ieee80211_wake_vif_queues(struct ieee80211_local *local,
581 struct ieee80211_sub_if_data *sdata,
582 enum queue_stop_reason reason)
583{
584 ieee80211_wake_queues_by_reason(&local->hw,
585 ieee80211_get_vif_queues(local, sdata),
586 reason, true);
587}
588
3384d757
AN		 589static void __iterate_interfaces(struct ieee80211_local *local,
590 u32 iter_flags,
591 void (*iterator)(void *data, u8 *mac,
592 struct ieee80211_vif *vif),
593 void *data)
dabeb344 594{
dabeb344 595 struct ieee80211_sub_if_data *sdata;
3384d757 596 bool active_only = iter_flags & IEEE80211_IFACE_ITER_ACTIVE;
dabeb344 597
c7c71066 598 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
2f561feb 599 switch (sdata->vif.type) {
05c914fe 600 case NL80211_IFTYPE_MONITOR:
d8212184 601 if (!(sdata->u.mntr.flags & MONITOR_FLAG_ACTIVE))
31eba5bc
FF		 602 continue;
603 break;
05c914fe 604 case NL80211_IFTYPE_AP_VLAN:
2f561feb 605 continue;
2ca27bcf 606 default:
2f561feb
ID		 607 break;
608 }
8b2c9824 609 if (!(iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL) &&
3384d757 610 active_only && !(sdata->flags & IEEE80211_SDATA_IN_DRIVER))
8b2c9824 611 continue;
3384d757 612 if (ieee80211_sdata_running(sdata) || !active_only)
47846c9b 613 iterator(data, sdata->vif.addr,
2f561feb
ID		 614 &sdata->vif);
615 }
616
c7c71066
JB		 617 sdata = rcu_dereference_check(local->monitor_sdata,
618 lockdep_is_held(&local->iflist_mtx) ||
619 lockdep_rtnl_is_held());
8b2c9824 620 if (sdata &&
3384d757 621 (iter_flags & IEEE80211_IFACE_ITER_RESUME_ALL || !active_only ||
8b2c9824 622 sdata->flags & IEEE80211_SDATA_IN_DRIVER))
685fb72b 623 iterator(data, sdata->vif.addr, &sdata->vif);
c7c71066 624}
685fb72b 625
3384d757 626void ieee80211_iterate_interfaces(
c7c71066
JB		 627 struct ieee80211_hw *hw, u32 iter_flags,
628 void (*iterator)(void *data, u8 *mac,
629 struct ieee80211_vif *vif),
630 void *data)
631{
632 struct ieee80211_local *local = hw_to_local(hw);
633
634 mutex_lock(&local->iflist_mtx);
3384d757 635 __iterate_interfaces(local, iter_flags, iterator, data);
c771c9d8 636 mutex_unlock(&local->iflist_mtx);
2f561feb 637}
3384d757 638EXPORT_SYMBOL_GPL(ieee80211_iterate_interfaces);
2f561feb
ID		 639
640void ieee80211_iterate_active_interfaces_atomic(
8b2c9824 641 struct ieee80211_hw *hw, u32 iter_flags,
2f561feb
ID		 642 void (*iterator)(void *data, u8 *mac,
643 struct ieee80211_vif *vif),
644 void *data)
645{
646 struct ieee80211_local *local = hw_to_local(hw);
2f561feb 647
e38bad47 648 rcu_read_lock();
3384d757
AN		 649 __iterate_interfaces(local, iter_flags | IEEE80211_IFACE_ITER_ACTIVE,
650 iterator, data);
c7c71066
JB		 651 rcu_read_unlock();
652}
653EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_atomic);
dabeb344 654
c7c71066
JB		 655void ieee80211_iterate_active_interfaces_rtnl(
656 struct ieee80211_hw *hw, u32 iter_flags,
657 void (*iterator)(void *data, u8 *mac,
658 struct ieee80211_vif *vif),
659 void *data)
660{
661 struct ieee80211_local *local = hw_to_local(hw);
e38bad47 662
c7c71066 663 ASSERT_RTNL();
685fb72b 664
3384d757
AN		 665 __iterate_interfaces(local, iter_flags | IEEE80211_IFACE_ITER_ACTIVE,
666 iterator, data);
dabeb344 667}
c7c71066 668EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_rtnl);
37ffc8da 669
0fc1e049
AN		 670static void __iterate_stations(struct ieee80211_local *local,
671 void (*iterator)(void *data,
672 struct ieee80211_sta *sta),
673 void *data)
674{
675 struct sta_info *sta;
676
677 list_for_each_entry_rcu(sta, &local->sta_list, list) {
678 if (!sta->uploaded)
679 continue;
680
681 iterator(data, &sta->sta);
682 }
683}
684
685void ieee80211_iterate_stations_atomic(struct ieee80211_hw *hw,
686 void (*iterator)(void *data,
687 struct ieee80211_sta *sta),
688 void *data)
689{
690 struct ieee80211_local *local = hw_to_local(hw);
691
692 rcu_read_lock();
693 __iterate_stations(local, iterator, data);
694 rcu_read_unlock();
695}
696EXPORT_SYMBOL_GPL(ieee80211_iterate_stations_atomic);
697
ad7e718c
JB		 698struct ieee80211_vif *wdev_to_ieee80211_vif(struct wireless_dev *wdev)
699{
700 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
701
702 if (!ieee80211_sdata_running(sdata) ||
703 !(sdata->flags & IEEE80211_SDATA_IN_DRIVER))
704 return NULL;
705 return &sdata->vif;
706}
707EXPORT_SYMBOL_GPL(wdev_to_ieee80211_vif);
708
dc5a1ad7
EG		 709struct wireless_dev *ieee80211_vif_to_wdev(struct ieee80211_vif *vif)
710{
6513e98e
JB		 711 struct ieee80211_sub_if_data *sdata;
712
713 if (!vif)
714 return NULL;
715
716 sdata = vif_to_sdata(vif);
dc5a1ad7
EG		 717
718 if (!ieee80211_sdata_running(sdata) ||
719 !(sdata->flags & IEEE80211_SDATA_IN_DRIVER))
720 return NULL;
721
722 return &sdata->wdev;
723}
724EXPORT_SYMBOL_GPL(ieee80211_vif_to_wdev);
725
42935eca
LR		 726/*
727 * Nothing should have been stuffed into the workqueue during
4afaff17
EG		 728 * the suspend->resume cycle. Since we can't check each caller
729 * of this function if we are already quiescing / suspended,
730 * check here and don't WARN since this can actually happen when
731 * the rx path (for example) is racing against __ieee80211_suspend
732 * and suspending / quiescing was set after the rx path checked
733 * them.
42935eca
LR		 734 */
735static bool ieee80211_can_queue_work(struct ieee80211_local *local)
736{
4afaff17
EG		 737 if (local->quiescing || (local->suspended && !local->resuming)) {
738 pr_warn("queueing ieee80211 work while going to suspend\n");
ceb99fe0 739 return false;
4afaff17 740 }
42935eca
LR		 741
742 return true;
743}
744
745void ieee80211_queue_work(struct ieee80211_hw *hw, struct work_struct *work)
746{
747 struct ieee80211_local *local = hw_to_local(hw);
748
749 if (!ieee80211_can_queue_work(local))
750 return;
751
752 queue_work(local->workqueue, work);
753}
754EXPORT_SYMBOL(ieee80211_queue_work);
755
756void ieee80211_queue_delayed_work(struct ieee80211_hw *hw,
757 struct delayed_work *dwork,
758 unsigned long delay)
759{
760 struct ieee80211_local *local = hw_to_local(hw);
761
762 if (!ieee80211_can_queue_work(local))
763 return;
764
765 queue_delayed_work(local->workqueue, dwork, delay);
766}
767EXPORT_SYMBOL(ieee80211_queue_delayed_work);
768
35d865af 769u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
dd76986b
JB		 770 struct ieee802_11_elems *elems,
771 u64 filter, u32 crc)
772{
773 size_t left = len;
35d865af 774 const u8 *pos = start;
dd76986b 775 bool calc_crc = filter != 0;
fcff4f10 776 DECLARE_BITMAP(seen_elems, 256);
b2e506bf 777 const u8 *ie;
dd76986b 778
fcff4f10 779 bitmap_zero(seen_elems, 256);
dd76986b
JB		 780 memset(elems, 0, sizeof(*elems));
781 elems->ie_start = start;
782 elems->total_len = len;
783
784 while (left >= 2) {
785 u8 id, elen;
fcff4f10 786 bool elem_parse_failed;
dd76986b
JB		 787
788 id = *pos++;
789 elen = *pos++;
790 left -= 2;
791
fcff4f10
PS		 792 if (elen > left) {
793 elems->parse_error = true;
dd76986b 794 break;
fcff4f10
PS		 795 }
796
9690fb16
JB		 797 switch (id) {
798 case WLAN_EID_SSID:
799 case WLAN_EID_SUPP_RATES:
800 case WLAN_EID_FH_PARAMS:
801 case WLAN_EID_DS_PARAMS:
802 case WLAN_EID_CF_PARAMS:
803 case WLAN_EID_TIM:
804 case WLAN_EID_IBSS_PARAMS:
805 case WLAN_EID_CHALLENGE:
806 case WLAN_EID_RSN:
807 case WLAN_EID_ERP_INFO:
808 case WLAN_EID_EXT_SUPP_RATES:
809 case WLAN_EID_HT_CAPABILITY:
810 case WLAN_EID_HT_OPERATION:
811 case WLAN_EID_VHT_CAPABILITY:
812 case WLAN_EID_VHT_OPERATION:
813 case WLAN_EID_MESH_ID:
814 case WLAN_EID_MESH_CONFIG:
815 case WLAN_EID_PEER_MGMT:
816 case WLAN_EID_PREQ:
817 case WLAN_EID_PREP:
818 case WLAN_EID_PERR:
819 case WLAN_EID_RANN:
820 case WLAN_EID_CHANNEL_SWITCH:
821 case WLAN_EID_EXT_CHANSWITCH_ANN:
822 case WLAN_EID_COUNTRY:
823 case WLAN_EID_PWR_CONSTRAINT:
824 case WLAN_EID_TIMEOUT_INTERVAL:
85220d71 825 case WLAN_EID_SECONDARY_CHANNEL_OFFSET:
b2e506bf 826 case WLAN_EID_WIDE_BW_CHANNEL_SWITCH:
8f2535b9 827 case WLAN_EID_CHAN_SWITCH_PARAM:
9041c1fa 828 case WLAN_EID_EXT_CAPABILITY:
53837584
AN		 829 case WLAN_EID_CHAN_SWITCH_TIMING:
830 case WLAN_EID_LINK_ID:
b2e506bf
JB		 831 /*
832 * not listing WLAN_EID_CHANNEL_SWITCH_WRAPPER -- it seems possible
833 * that if the content gets bigger it might be needed more than once
834 */
9690fb16
JB		 835 if (test_bit(id, seen_elems)) {
836 elems->parse_error = true;
837 left -= elen;
838 pos += elen;
839 continue;
840 }
841 break;
fcff4f10 842 }
dd76986b
JB		 843
844 if (calc_crc && id < 64 && (filter & (1ULL << id)))
845 crc = crc32_be(crc, pos - 2, elen + 2);
846
fcff4f10
PS		 847 elem_parse_failed = false;
848
dd76986b 849 switch (id) {
53837584
AN		 850 case WLAN_EID_LINK_ID:
851 if (elen + 2 != sizeof(struct ieee80211_tdls_lnkie)) {
852 elem_parse_failed = true;
853 break;
854 }
855 elems->lnk_id = (void *)(pos - 2);
856 break;
857 case WLAN_EID_CHAN_SWITCH_TIMING:
858 if (elen != sizeof(struct ieee80211_ch_switch_timing)) {
859 elem_parse_failed = true;
860 break;
861 }
862 elems->ch_sw_timing = (void *)pos;
863 break;
9041c1fa
AN		 864 case WLAN_EID_EXT_CAPABILITY:
865 elems->ext_capab = pos;
866 elems->ext_capab_len = elen;
867 break;
dd76986b
JB		 868 case WLAN_EID_SSID:
869 elems->ssid = pos;
870 elems->ssid_len = elen;
871 break;
872 case WLAN_EID_SUPP_RATES:
873 elems->supp_rates = pos;
874 elems->supp_rates_len = elen;
875 break;
dd76986b 876 case WLAN_EID_DS_PARAMS:
1cd8e88e
JB		 877 if (elen >= 1)
878 elems->ds_params = pos;
879 else
880 elem_parse_failed = true;
dd76986b 881 break;
dd76986b
JB		 882 case WLAN_EID_TIM:
883 if (elen >= sizeof(struct ieee80211_tim_ie)) {
884 elems->tim = (void *)pos;
885 elems->tim_len = elen;
fcff4f10
PS		 886 } else
887 elem_parse_failed = true;
dd76986b 888 break;
dd76986b
JB		 889 case WLAN_EID_CHALLENGE:
890 elems->challenge = pos;
891 elems->challenge_len = elen;
892 break;
893 case WLAN_EID_VENDOR_SPECIFIC:
894 if (elen >= 4 && pos[0] == 0x00 && pos[1] == 0x50 &&
895 pos[2] == 0xf2) {
896 /* Microsoft OUI (00:50:F2) */
897
898 if (calc_crc)
899 crc = crc32_be(crc, pos - 2, elen + 2);
900
441a33ba 901 if (elen >= 5 && pos[3] == 2) {
dd76986b
JB		 902 /* OUI Type 2 - WMM IE */
903 if (pos[4] == 0) {
904 elems->wmm_info = pos;
905 elems->wmm_info_len = elen;
906 } else if (pos[4] == 1) {
907 elems->wmm_param = pos;
908 elems->wmm_param_len = elen;
909 }
910 }
911 }
912 break;
913 case WLAN_EID_RSN:
914 elems->rsn = pos;
915 elems->rsn_len = elen;
916 break;
917 case WLAN_EID_ERP_INFO:
1946bed9
JB		 918 if (elen >= 1)
919 elems->erp_info = pos;
920 else
921 elem_parse_failed = true;
dd76986b
JB		 922 break;
923 case WLAN_EID_EXT_SUPP_RATES:
924 elems->ext_supp_rates = pos;
925 elems->ext_supp_rates_len = elen;
926 break;
927 case WLAN_EID_HT_CAPABILITY:
928 if (elen >= sizeof(struct ieee80211_ht_cap))
929 elems->ht_cap_elem = (void *)pos;
fcff4f10
PS		 930 else
931 elem_parse_failed = true;
dd76986b 932 break;
074d46d1
JB		 933 case WLAN_EID_HT_OPERATION:
934 if (elen >= sizeof(struct ieee80211_ht_operation))
935 elems->ht_operation = (void *)pos;
fcff4f10
PS		 936 else
937 elem_parse_failed = true;
dd76986b 938 break;
818255ea
MP		 939 case WLAN_EID_VHT_CAPABILITY:
940 if (elen >= sizeof(struct ieee80211_vht_cap))
941 elems->vht_cap_elem = (void *)pos;
942 else
943 elem_parse_failed = true;
944 break;
945 case WLAN_EID_VHT_OPERATION:
946 if (elen >= sizeof(struct ieee80211_vht_operation))
947 elems->vht_operation = (void *)pos;
948 else
949 elem_parse_failed = true;
950 break;
bee7f586
JB		 951 case WLAN_EID_OPMODE_NOTIF:
952 if (elen > 0)
953 elems->opmode_notif = pos;
954 else
955 elem_parse_failed = true;
956 break;
dd76986b
JB		 957 case WLAN_EID_MESH_ID:
958 elems->mesh_id = pos;
959 elems->mesh_id_len = elen;
960 break;
961 case WLAN_EID_MESH_CONFIG:
962 if (elen >= sizeof(struct ieee80211_meshconf_ie))
963 elems->mesh_config = (void *)pos;
fcff4f10
PS		 964 else
965 elem_parse_failed = true;
dd76986b
JB		 966 break;
967 case WLAN_EID_PEER_MGMT:
968 elems->peering = pos;
969 elems->peering_len = elen;
970 break;
3f52b7e3
MP		 971 case WLAN_EID_MESH_AWAKE_WINDOW:
972 if (elen >= 2)
973 elems->awake_window = (void *)pos;
974 break;
dd76986b
JB		 975 case WLAN_EID_PREQ:
976 elems->preq = pos;
977 elems->preq_len = elen;
978 break;
979 case WLAN_EID_PREP:
980 elems->prep = pos;
981 elems->prep_len = elen;
982 break;
983 case WLAN_EID_PERR:
984 elems->perr = pos;
985 elems->perr_len = elen;
986 break;
987 case WLAN_EID_RANN:
988 if (elen >= sizeof(struct ieee80211_rann_ie))
989 elems->rann = (void *)pos;
fcff4f10
PS		 990 else
991 elem_parse_failed = true;
dd76986b
JB		 992 break;
993 case WLAN_EID_CHANNEL_SWITCH:
5bc1420b
JB		 994 if (elen != sizeof(struct ieee80211_channel_sw_ie)) {
995 elem_parse_failed = true;
996 break;
997 }
998 elems->ch_switch_ie = (void *)pos;
dd76986b 999 break;
b4f286a1
JB		 1000 case WLAN_EID_EXT_CHANSWITCH_ANN:
1001 if (elen != sizeof(struct ieee80211_ext_chansw_ie)) {
1002 elem_parse_failed = true;
1003 break;
1004 }
1005 elems->ext_chansw_ie = (void *)pos;
1006 break;
85220d71
JB		 1007 case WLAN_EID_SECONDARY_CHANNEL_OFFSET:
1008 if (elen != sizeof(struct ieee80211_sec_chan_offs_ie)) {
1009 elem_parse_failed = true;
1010 break;
1011 }
1012 elems->sec_chan_offs = (void *)pos;
1013 break;
8f2535b9
CYY		 1014 case WLAN_EID_CHAN_SWITCH_PARAM:
1015 if (elen !=
1016 sizeof(*elems->mesh_chansw_params_ie)) {
1017 elem_parse_failed = true;
1018 break;
1019 }
1020 elems->mesh_chansw_params_ie = (void *)pos;
1021 break;
b2e506bf
JB		 1022 case WLAN_EID_WIDE_BW_CHANNEL_SWITCH:
1023 if (!action ||
1024 elen != sizeof(*elems->wide_bw_chansw_ie)) {
1025 elem_parse_failed = true;
1026 break;
1027 }
1028 elems->wide_bw_chansw_ie = (void *)pos;
1029 break;
1030 case WLAN_EID_CHANNEL_SWITCH_WRAPPER:
1031 if (action) {
1032 elem_parse_failed = true;
1033 break;
1034 }
1035 /*
1036 * This is a bit tricky, but as we only care about
1037 * the wide bandwidth channel switch element, so
1038 * just parse it out manually.
1039 */
1040 ie = cfg80211_find_ie(WLAN_EID_WIDE_BW_CHANNEL_SWITCH,
1041 pos, elen);
1042 if (ie) {
1043 if (ie[1] == sizeof(*elems->wide_bw_chansw_ie))
1044 elems->wide_bw_chansw_ie =
1045 (void *)(ie + 2);
1046 else
1047 elem_parse_failed = true;
1048 }
1049 break;
dd76986b
JB		 1050 case WLAN_EID_COUNTRY:
1051 elems->country_elem = pos;
1052 elems->country_elem_len = elen;
1053 break;
1054 case WLAN_EID_PWR_CONSTRAINT:
761a48d2
JB		 1055 if (elen != 1) {
1056 elem_parse_failed = true;
1057 break;
1058 }
dd76986b 1059 elems->pwr_constr_elem = pos;
dd76986b 1060 break;
c8d65917
SG		 1061 case WLAN_EID_CISCO_VENDOR_SPECIFIC:
1062 /* Lots of different options exist, but we only care
1063 * about the Dynamic Transmit Power Control element.
1064 * First check for the Cisco OUI, then for the DTPC
1065 * tag (0x00).
1066 */
1067 if (elen < 4) {
1068 elem_parse_failed = true;
1069 break;
1070 }
1071
1072 if (pos[0] != 0x00 || pos[1] != 0x40 ||
1073 pos[2] != 0x96 || pos[3] != 0x00)
1074 break;
1075
1076 if (elen != 6) {
1077 elem_parse_failed = true;
1078 break;
1079 }
1080
1081 if (calc_crc)
1082 crc = crc32_be(crc, pos - 2, elen + 2);
1083
1084 elems->cisco_dtpc_elem = pos;
1085 break;
dd76986b 1086 case WLAN_EID_TIMEOUT_INTERVAL:
79ba1d89
JB		 1087 if (elen >= sizeof(struct ieee80211_timeout_interval_ie))
1088 elems->timeout_int = (void *)pos;
1089 else
1090 elem_parse_failed = true;
dd76986b
JB		 1091 break;
1092 default:
1093 break;
1094 }
1095
fcff4f10
PS		 1096 if (elem_parse_failed)
1097 elems->parse_error = true;
1098 else
5df45690 1099 __set_bit(id, seen_elems);
fcff4f10 1100
dd76986b
JB		 1101 left -= elen;
1102 pos += elen;
1103 }
1104
fcff4f10
PS		 1105 if (left != 0)
1106 elems->parse_error = true;
1107
dd76986b
JB		 1108 return crc;
1109}
1110
3abead59 1111void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
cec66283 1112 bool bss_notify, bool enable_qos)
5825fe10
JB		 1113{
1114 struct ieee80211_local *local = sdata->local;
1115 struct ieee80211_tx_queue_params qparam;
55de908a 1116 struct ieee80211_chanctx_conf *chanctx_conf;
54bcbc69 1117 int ac;
cec66283 1118 bool use_11b;
239281f8 1119 bool is_ocb; /* Use another EDCA parameters if dot11OCBActivated=true */
aa837e1d 1120 int aCWmin, aCWmax;
5825fe10
JB		 1121
1122 if (!local->ops->conf_tx)
1123 return;
1124
54bcbc69
JB		 1125 if (local->hw.queues < IEEE80211_NUM_ACS)
1126 return;
1127
5825fe10
JB		 1128 memset(&qparam, 0, sizeof(qparam));
1129
55de908a
JB		 1130 rcu_read_lock();
1131 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1132 use_11b = (chanctx_conf &&
57fbcce3 1133 chanctx_conf->def.chan->band == NL80211_BAND_2GHZ) &&
aa837e1d 1134 !(sdata->flags & IEEE80211_SDATA_OPERATING_GMODE);
55de908a 1135 rcu_read_unlock();
5825fe10 1136
239281f8
RL		 1137 is_ocb = (sdata->vif.type == NL80211_IFTYPE_OCB);
1138
1f4ffde8
FZ		 1139 /* Set defaults according to 802.11-2007 Table 7-37 */
1140 aCWmax = 1023;
1141 if (use_11b)
1142 aCWmin = 31;
1143 else
1144 aCWmin = 15;
1145
1146 /* Confiure old 802.11b/g medium access rules. */
1147 qparam.cw_max = aCWmax;
1148 qparam.cw_min = aCWmin;
1149 qparam.txop = 0;
1150 qparam.aifs = 2;
aa837e1d 1151
1f4ffde8
FZ		 1152 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
1153 /* Update if QoS is enabled. */
a8ce8544
SG		 1154 if (enable_qos) {
1155 switch (ac) {
1156 case IEEE80211_AC_BK:
1157 qparam.cw_max = aCWmax;
1158 qparam.cw_min = aCWmin;
1159 qparam.txop = 0;
239281f8
RL		 1160 if (is_ocb)
1161 qparam.aifs = 9;
1162 else
1163 qparam.aifs = 7;
a8ce8544
SG		 1164 break;
1165 /* never happens but let's not leave undefined */
1166 default:
1167 case IEEE80211_AC_BE:
1168 qparam.cw_max = aCWmax;
1169 qparam.cw_min = aCWmin;
1170 qparam.txop = 0;
239281f8
RL		 1171 if (is_ocb)
1172 qparam.aifs = 6;
1173 else
1174 qparam.aifs = 3;
a8ce8544
SG		 1175 break;
1176 case IEEE80211_AC_VI:
1177 qparam.cw_max = aCWmin;
1178 qparam.cw_min = (aCWmin + 1) / 2 - 1;
239281f8
RL		 1179 if (is_ocb)
1180 qparam.txop = 0;
1181 else if (use_11b)
a8ce8544
SG		 1182 qparam.txop = 6016/32;
1183 else
1184 qparam.txop = 3008/32;
239281f8
RL		 1185
1186 if (is_ocb)
1187 qparam.aifs = 3;
1188 else
1189 qparam.aifs = 2;
a8ce8544
SG		 1190 break;
1191 case IEEE80211_AC_VO:
1192 qparam.cw_max = (aCWmin + 1) / 2 - 1;
1193 qparam.cw_min = (aCWmin + 1) / 4 - 1;
239281f8
RL		 1194 if (is_ocb)
1195 qparam.txop = 0;
1196 else if (use_11b)
a8ce8544
SG		 1197 qparam.txop = 3264/32;
1198 else
1199 qparam.txop = 1504/32;
1200 qparam.aifs = 2;
1201 break;
1202 }
aa837e1d 1203 }
5825fe10 1204
ab13315a
KV		 1205 qparam.uapsd = false;
1206
54bcbc69
JB		 1207 sdata->tx_conf[ac] = qparam;
1208 drv_conf_tx(local, sdata, ac, &qparam);
aa837e1d 1209 }
e1b3ec1a 1210
f142c6b9
JB		 1211 if (sdata->vif.type != NL80211_IFTYPE_MONITOR &&
1212 sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE) {
a8ce8544 1213 sdata->vif.bss_conf.qos = enable_qos;
3abead59
JB		 1214 if (bss_notify)
1215 ieee80211_bss_info_change_notify(sdata,
1216 BSS_CHANGED_QOS);
d9734979 1217 }
5825fe10 1218}
e50db65c 1219
46900298 1220void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
700e8ea6 1221 u16 transaction, u16 auth_alg, u16 status,
4a3cb702 1222 const u8 *extra, size_t extra_len, const u8 *da,
1672c0e3
JB		 1223 const u8 *bssid, const u8 *key, u8 key_len, u8 key_idx,
1224 u32 tx_flags)
46900298
JB		 1225{
1226 struct ieee80211_local *local = sdata->local;
1227 struct sk_buff *skb;
1228 struct ieee80211_mgmt *mgmt;
fffd0934 1229 int err;
46900298 1230
15e230ab 1231 /* 24 + 6 = header + auth_algo + auth_transaction + status_code */
744462a9
MS		 1232 skb = dev_alloc_skb(local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN +
1233 24 + 6 + extra_len + IEEE80211_WEP_ICV_LEN);
d15b8459 1234 if (!skb)
46900298 1235 return;
d15b8459 1236
744462a9 1237 skb_reserve(skb, local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN);
46900298
JB		 1238
1239 mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24 + 6);
1240 memset(mgmt, 0, 24 + 6);
1241 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
1242 IEEE80211_STYPE_AUTH);
efa6a09d 1243 memcpy(mgmt->da, da, ETH_ALEN);
47846c9b 1244 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
46900298
JB		 1245 memcpy(mgmt->bssid, bssid, ETH_ALEN);
1246 mgmt->u.auth.auth_alg = cpu_to_le16(auth_alg);
1247 mgmt->u.auth.auth_transaction = cpu_to_le16(transaction);
700e8ea6 1248 mgmt->u.auth.status_code = cpu_to_le16(status);
46900298
JB		 1249 if (extra)
1250 memcpy(skb_put(skb, extra_len), extra, extra_len);
46900298 1251
fffd0934
JB		 1252 if (auth_alg == WLAN_AUTH_SHARED_KEY && transaction == 3) {
1253 mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
1254 err = ieee80211_wep_encrypt(local, skb, key, key_len, key_idx);
1255 WARN_ON(err);
1256 }
1257
1672c0e3
JB		 1258 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT |
1259 tx_flags;
62ae67be 1260 ieee80211_tx_skb(sdata, skb);
46900298
JB		 1261}
1262
6ae16775
AQ		 1263void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
1264 const u8 *bssid, u16 stype, u16 reason,
1265 bool send_frame, u8 *frame_buf)
1266{
1267 struct ieee80211_local *local = sdata->local;
1268 struct sk_buff *skb;
1269 struct ieee80211_mgmt *mgmt = (void *)frame_buf;
1270
1271 /* build frame */
1272 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | stype);
1273 mgmt->duration = 0; /* initialize only */
1274 mgmt->seq_ctrl = 0; /* initialize only */
1275 memcpy(mgmt->da, bssid, ETH_ALEN);
1276 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
1277 memcpy(mgmt->bssid, bssid, ETH_ALEN);
1278 /* u.deauth.reason_code == u.disassoc.reason_code */
1279 mgmt->u.deauth.reason_code = cpu_to_le16(reason);
1280
1281 if (send_frame) {
1282 skb = dev_alloc_skb(local->hw.extra_tx_headroom +
1283 IEEE80211_DEAUTH_FRAME_LEN);
1284 if (!skb)
1285 return;
1286
1287 skb_reserve(skb, local->hw.extra_tx_headroom);
1288
1289 /* copy in frame */
1290 memcpy(skb_put(skb, IEEE80211_DEAUTH_FRAME_LEN),
1291 mgmt, IEEE80211_DEAUTH_FRAME_LEN);
1292
1293 if (sdata->vif.type != NL80211_IFTYPE_STATION ||
1294 !(sdata->u.mgd.flags & IEEE80211_STA_MFP_ENABLED))
1295 IEEE80211_SKB_CB(skb)->flags |=
1296 IEEE80211_TX_INTFL_DONT_ENCRYPT;
1297
1298 ieee80211_tx_skb(sdata, skb);
1299 }
1300}
1301
c56ef672
DS		 1302static int ieee80211_build_preq_ies_band(struct ieee80211_local *local,
1303 u8 *buffer, size_t buffer_len,
1304 const u8 *ie, size_t ie_len,
57fbcce3 1305 enum nl80211_band band,
c56ef672
DS		 1306 u32 rate_mask,
1307 struct cfg80211_chan_def *chandef,
1308 size_t *offset)
de95a54b
JB		 1309{
1310 struct ieee80211_supported_band *sband;
c604b9f2 1311 u8 *pos = buffer, *end = buffer + buffer_len;
c56ef672 1312 size_t noffset;
8e664fb3 1313 int supp_rates_len, i;
8dcb2003
JM		 1314 u8 rates[32];
1315 int num_rates;
1316 int ext_rates_len;
2103dec1
SW		 1317 int shift;
1318 u32 rate_flags;
40a11ca8 1319 bool have_80mhz = false;
de95a54b 1320
c56ef672
DS		 1321 *offset = 0;
1322
4d36ec58 1323 sband = local->hw.wiphy->bands[band];
d811b3d5
AN		 1324 if (WARN_ON_ONCE(!sband))
1325 return 0;
de95a54b 1326
2103dec1
SW		 1327 rate_flags = ieee80211_chandef_rate_flags(chandef);
1328 shift = ieee80211_chandef_get_shift(chandef);
1329
8dcb2003
JM		 1330 num_rates = 0;
1331 for (i = 0; i < sband->n_bitrates; i++) {
1332 if ((BIT(i) & rate_mask) == 0)
1333 continue; /* skip rate */
2103dec1
SW		 1334 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
1335 continue;
1336
1337 rates[num_rates++] =
1338 (u8) DIV_ROUND_UP(sband->bitrates[i].bitrate,
1339 (1 << shift) * 5);
8dcb2003
JM		 1340 }
1341
1342 supp_rates_len = min_t(int, num_rates, 8);
8e664fb3 1343
c604b9f2
JB		 1344 if (end - pos < 2 + supp_rates_len)
1345 goto out_err;
de95a54b 1346 *pos++ = WLAN_EID_SUPP_RATES;
8e664fb3 1347 *pos++ = supp_rates_len;
8dcb2003
JM		 1348 memcpy(pos, rates, supp_rates_len);
1349 pos += supp_rates_len;
8e664fb3
JB		 1350
1351 /* insert "request information" if in custom IEs */
1352 if (ie && ie_len) {
1353 static const u8 before_extrates[] = {
1354 WLAN_EID_SSID,
1355 WLAN_EID_SUPP_RATES,
1356 WLAN_EID_REQUEST,
1357 };
1358 noffset = ieee80211_ie_split(ie, ie_len,
1359 before_extrates,
1360 ARRAY_SIZE(before_extrates),
c56ef672
DS		 1361 *offset);
1362 if (end - pos < noffset - *offset)
c604b9f2 1363 goto out_err;
c56ef672
DS		 1364 memcpy(pos, ie + *offset, noffset - *offset);
1365 pos += noffset - *offset;
1366 *offset = noffset;
8e664fb3
JB		 1367 }
1368
8dcb2003
JM		 1369 ext_rates_len = num_rates - supp_rates_len;
1370 if (ext_rates_len > 0) {
c604b9f2
JB		 1371 if (end - pos < 2 + ext_rates_len)
1372 goto out_err;
8e664fb3 1373 *pos++ = WLAN_EID_EXT_SUPP_RATES;
8dcb2003
JM		 1374 *pos++ = ext_rates_len;
1375 memcpy(pos, rates + supp_rates_len, ext_rates_len);
1376 pos += ext_rates_len;
8e664fb3
JB		 1377 }
1378
57fbcce3 1379 if (chandef->chan && sband->band == NL80211_BAND_2GHZ) {
c604b9f2
JB		 1380 if (end - pos < 3)
1381 goto out_err;
651b5225
JM		 1382 *pos++ = WLAN_EID_DS_PARAMS;
1383 *pos++ = 1;
2103dec1
SW		 1384 *pos++ = ieee80211_frequency_to_channel(
1385 chandef->chan->center_freq);
651b5225
JM		 1386 }
1387
8e664fb3
JB		 1388 /* insert custom IEs that go before HT */
1389 if (ie && ie_len) {
1390 static const u8 before_ht[] = {
1391 WLAN_EID_SSID,
1392 WLAN_EID_SUPP_RATES,
1393 WLAN_EID_REQUEST,
1394 WLAN_EID_EXT_SUPP_RATES,
1395 WLAN_EID_DS_PARAMS,
1396 WLAN_EID_SUPPORTED_REGULATORY_CLASSES,
1397 };
1398 noffset = ieee80211_ie_split(ie, ie_len,
1399 before_ht, ARRAY_SIZE(before_ht),
c56ef672
DS		 1400 *offset);
1401 if (end - pos < noffset - *offset)
c604b9f2 1402 goto out_err;
c56ef672
DS		 1403 memcpy(pos, ie + *offset, noffset - *offset);
1404 pos += noffset - *offset;
1405 *offset = noffset;
de95a54b
JB		 1406 }
1407
c604b9f2
JB		 1408 if (sband->ht_cap.ht_supported) {
1409 if (end - pos < 2 + sizeof(struct ieee80211_ht_cap))
1410 goto out_err;
ef96a842
BG		 1411 pos = ieee80211_ie_build_ht_cap(pos, &sband->ht_cap,
1412 sband->ht_cap.cap);
c604b9f2 1413 }
5ef2d41a 1414
de95a54b
JB		 1415 /*
1416 * If adding more here, adjust code in main.c
1417 * that calculates local->scan_ies_len.
1418 */
1419
4d952300 1420 /* insert custom IEs that go before VHT */
8e664fb3 1421 if (ie && ie_len) {
4d952300
JB		 1422 static const u8 before_vht[] = {
1423 WLAN_EID_SSID,
1424 WLAN_EID_SUPP_RATES,
1425 WLAN_EID_REQUEST,
1426 WLAN_EID_EXT_SUPP_RATES,
1427 WLAN_EID_DS_PARAMS,
1428 WLAN_EID_SUPPORTED_REGULATORY_CLASSES,
1429 WLAN_EID_HT_CAPABILITY,
1430 WLAN_EID_BSS_COEX_2040,
1431 WLAN_EID_EXT_CAPABILITY,
1432 WLAN_EID_SSID_LIST,
1433 WLAN_EID_CHANNEL_USAGE,
1434 WLAN_EID_INTERWORKING,
1435 /* mesh ID can't happen here */
1436 /* 60 GHz can't happen here right now */
1437 };
1438 noffset = ieee80211_ie_split(ie, ie_len,
1439 before_vht, ARRAY_SIZE(before_vht),
c56ef672
DS		 1440 *offset);
1441 if (end - pos < noffset - *offset)
c604b9f2 1442 goto out_err;
c56ef672
DS		 1443 memcpy(pos, ie + *offset, noffset - *offset);
1444 pos += noffset - *offset;
1445 *offset = noffset;
de95a54b
JB		 1446 }
1447
40a11ca8
JB		 1448 /* Check if any channel in this sband supports at least 80 MHz */
1449 for (i = 0; i < sband->n_channels; i++) {
fa44b988
AN		 1450 if (sband->channels[i].flags & (IEEE80211_CHAN_DISABLED |
1451 IEEE80211_CHAN_NO_80MHZ))
1452 continue;
1453
1454 have_80mhz = true;
1455 break;
40a11ca8
JB		 1456 }
1457
1458 if (sband->vht_cap.vht_supported && have_80mhz) {
c604b9f2
JB		 1459 if (end - pos < 2 + sizeof(struct ieee80211_vht_cap))
1460 goto out_err;
ba0afa2f
MP		 1461 pos = ieee80211_ie_build_vht_cap(pos, &sband->vht_cap,
1462 sband->vht_cap.cap);
c604b9f2 1463 }
ba0afa2f 1464
c604b9f2
JB		 1465 return pos - buffer;
1466 out_err:
1467 WARN_ONCE(1, "not enough space for preq IEs\n");
de95a54b
JB		 1468 return pos - buffer;
1469}
1470
c56ef672
DS		 1471int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
1472 size_t buffer_len,
1473 struct ieee80211_scan_ies *ie_desc,
1474 const u8 *ie, size_t ie_len,
1475 u8 bands_used, u32 *rate_masks,
1476 struct cfg80211_chan_def *chandef)
1477{
1478 size_t pos = 0, old_pos = 0, custom_ie_offset = 0;
1479 int i;
1480
1481 memset(ie_desc, 0, sizeof(*ie_desc));
1482
57fbcce3 1483 for (i = 0; i < NUM_NL80211_BANDS; i++) {
c56ef672
DS		 1484 if (bands_used & BIT(i)) {
1485 pos += ieee80211_build_preq_ies_band(local,
1486 buffer + pos,
1487 buffer_len - pos,
1488 ie, ie_len, i,
1489 rate_masks[i],
1490 chandef,
1491 &custom_ie_offset);
1492 ie_desc->ies[i] = buffer + old_pos;
1493 ie_desc->len[i] = pos - old_pos;
1494 old_pos = pos;
1495 }
1496 }
1497
1498 /* add any remaining custom IEs */
1499 if (ie && ie_len) {
1500 if (WARN_ONCE(buffer_len - pos < ie_len - custom_ie_offset,
1501 "not enough space for preq custom IEs\n"))
1502 return pos;
1503 memcpy(buffer + pos, ie + custom_ie_offset,
1504 ie_len - custom_ie_offset);
1505 ie_desc->common_ies = buffer + pos;
1506 ie_desc->common_ie_len = ie_len - custom_ie_offset;
1507 pos += ie_len - custom_ie_offset;
1508 }
1509
1510 return pos;
1511};
1512
a619a4c0 1513struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
a344d677
JB		 1514 const u8 *src, const u8 *dst,
1515 u32 ratemask,
6b77863b 1516 struct ieee80211_channel *chan,
a619a4c0 1517 const u8 *ssid, size_t ssid_len,
a806c558
PS		 1518 const u8 *ie, size_t ie_len,
1519 bool directed)
46900298
JB		 1520{
1521 struct ieee80211_local *local = sdata->local;
2103dec1 1522 struct cfg80211_chan_def chandef;
46900298
JB		 1523 struct sk_buff *skb;
1524 struct ieee80211_mgmt *mgmt;
b9a9ada1 1525 int ies_len;
57fbcce3 1526 u32 rate_masks[NUM_NL80211_BANDS] = {};
c56ef672 1527 struct ieee80211_scan_ies dummy_ie_desc;
46900298 1528
a806c558
PS		 1529 /*
1530 * Do not send DS Channel parameter for directed probe requests
1531 * in order to maximize the chance that we get a response. Some
1532 * badly-behaved APs don't respond when this parameter is included.
1533 */
2103dec1 1534 chandef.width = sdata->vif.bss_conf.chandef.width;
a806c558 1535 if (directed)
2103dec1 1536 chandef.chan = NULL;
a806c558 1537 else
2103dec1 1538 chandef.chan = chan;
651b5225 1539
a344d677
JB		 1540 skb = ieee80211_probereq_get(&local->hw, src, ssid, ssid_len,
1541 100 + ie_len);
5b2bbf75 1542 if (!skb)
b9a9ada1
JB		 1543 return NULL;
1544
c56ef672 1545 rate_masks[chan->band] = ratemask;
b9a9ada1 1546 ies_len = ieee80211_build_preq_ies(local, skb_tail_pointer(skb),
c56ef672
DS		 1547 skb_tailroom(skb), &dummy_ie_desc,
1548 ie, ie_len, BIT(chan->band),
1549 rate_masks, &chandef);
b9a9ada1 1550 skb_put(skb, ies_len);
7c12ce8b 1551
46900298 1552 if (dst) {
7c12ce8b 1553 mgmt = (struct ieee80211_mgmt *) skb->data;
46900298
JB		 1554 memcpy(mgmt->da, dst, ETH_ALEN);
1555 memcpy(mgmt->bssid, dst, ETH_ALEN);
46900298 1556 }
46900298 1557
62ae67be 1558 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
5b2bbf75 1559
a619a4c0
JO		 1560 return skb;
1561}
1562
a344d677
JB		 1563void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata,
1564 const u8 *src, const u8 *dst,
a619a4c0 1565 const u8 *ssid, size_t ssid_len,
a806c558 1566 const u8 *ie, size_t ie_len,
1672c0e3 1567 u32 ratemask, bool directed, u32 tx_flags,
55de908a 1568 struct ieee80211_channel *channel, bool scan)
a619a4c0
JO		 1569{
1570 struct sk_buff *skb;
1571
a344d677 1572 skb = ieee80211_build_probe_req(sdata, src, dst, ratemask, channel,
6b77863b 1573 ssid, ssid_len,
85a237fe 1574 ie, ie_len, directed);
aad14ceb 1575 if (skb) {
1672c0e3 1576 IEEE80211_SKB_CB(skb)->flags |= tx_flags;
55de908a
JB		 1577 if (scan)
1578 ieee80211_tx_skb_tid_band(sdata, skb, 7, channel->band);
1579 else
1580 ieee80211_tx_skb(sdata, skb);
aad14ceb 1581 }
46900298
JB		 1582}
1583
2103dec1 1584u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
46900298 1585 struct ieee802_11_elems *elems,
57fbcce3 1586 enum nl80211_band band, u32 *basic_rates)
46900298
JB		 1587{
1588 struct ieee80211_supported_band *sband;
46900298 1589 size_t num_rates;
2103dec1
SW		 1590 u32 supp_rates, rate_flags;
1591 int i, j, shift;
1592 sband = sdata->local->hw.wiphy->bands[band];
1593
1594 rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef);
1595 shift = ieee80211_vif_get_shift(&sdata->vif);
46900298 1596
4ee73f33
MK		 1597 if (WARN_ON(!sband))
1598 return 1;
46900298 1599
46900298
JB		 1600 num_rates = sband->n_bitrates;
1601 supp_rates = 0;
1602 for (i = 0; i < elems->supp_rates_len +
1603 elems->ext_supp_rates_len; i++) {
1604 u8 rate = 0;
1605 int own_rate;
9ebb61a2 1606 bool is_basic;
46900298
JB		 1607 if (i < elems->supp_rates_len)
1608 rate = elems->supp_rates[i];
1609 else if (elems->ext_supp_rates)
1610 rate = elems->ext_supp_rates
1611 [i - elems->supp_rates_len];
1612 own_rate = 5 * (rate & 0x7f);
9ebb61a2
AN		 1613 is_basic = !!(rate & 0x80);
1614
1615 if (is_basic && (rate & 0x7f) == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
1616 continue;
1617
1618 for (j = 0; j < num_rates; j++) {
2103dec1
SW		 1619 int brate;
1620 if ((rate_flags & sband->bitrates[j].flags)
1621 != rate_flags)
1622 continue;
1623
1624 brate = DIV_ROUND_UP(sband->bitrates[j].bitrate,
1625 1 << shift);
1626
1627 if (brate == own_rate) {
46900298 1628 supp_rates |= BIT(j);
9ebb61a2
AN		 1629 if (basic_rates && is_basic)
1630 *basic_rates |= BIT(j);
1631 }
1632 }
46900298
JB		 1633 }
1634 return supp_rates;
1635}
f2753ddb 1636
84f6a01c
JB		 1637void ieee80211_stop_device(struct ieee80211_local *local)
1638{
1639 ieee80211_led_radio(local, false);
67408c8c 1640 ieee80211_mod_tpt_led_trig(local, 0, IEEE80211_TPT_LEDTRIG_FL_RADIO);
84f6a01c
JB		 1641
1642 cancel_work_sync(&local->reconfig_filter);
84f6a01c
JB		 1643
1644 flush_workqueue(local->workqueue);
678f415f 1645 drv_stop(local);
84f6a01c
JB		 1646}
1647
74430f94
JB		 1648static void ieee80211_flush_completed_scan(struct ieee80211_local *local,
1649 bool aborted)
1650{
1651 /* It's possible that we don't handle the scan completion in
1652 * time during suspend, so if it's still marked as completed
1653 * here, queue the work and flush it to clean things up.
1654 * Instead of calling the worker function directly here, we
1655 * really queue it to avoid potential races with other flows
1656 * scheduling the same work.
1657 */
1658 if (test_bit(SCAN_COMPLETED, &local->scanning)) {
1659 /* If coming from reconfiguration failure, abort the scan so
1660 * we don't attempt to continue a partial HW scan - which is
1661 * possible otherwise if (e.g.) the 2.4 GHz portion was the
1662 * completed scan, and a 5 GHz portion is still pending.
1663 */
1664 if (aborted)
1665 set_bit(SCAN_ABORTED, &local->scanning);
1666 ieee80211_queue_delayed_work(&local->hw, &local->scan_work, 0);
1667 flush_delayed_work(&local->scan_work);
1668 }
1669}
1670
f6837ba8
JB		 1671static void ieee80211_handle_reconfig_failure(struct ieee80211_local *local)
1672{
1673 struct ieee80211_sub_if_data *sdata;
1674 struct ieee80211_chanctx *ctx;
1675
1676 /*
1677 * We get here if during resume the device can't be restarted properly.
1678 * We might also get here if this happens during HW reset, which is a
1679 * slightly different situation and we need to drop all connections in
1680 * the latter case.
1681 *
1682 * Ask cfg80211 to turn off all interfaces, this will result in more
1683 * warnings but at least we'll then get into a clean stopped state.
1684 */
1685
1686 local->resuming = false;
1687 local->suspended = false;
7584f88f 1688 local->in_reconfig = false;
f6837ba8 1689
74430f94
JB		 1690 ieee80211_flush_completed_scan(local, true);
1691
f6837ba8
JB		 1692 /* scheduled scan clearly can't be running any more, but tell
1693 * cfg80211 and clear local state
1694 */
1695 ieee80211_sched_scan_end(local);
1696
1697 list_for_each_entry(sdata, &local->interfaces, list)
1698 sdata->flags &= ~IEEE80211_SDATA_IN_DRIVER;
1699
1700 /* Mark channel contexts as not being in the driver any more to avoid
1701 * removing them from the driver during the shutdown process...
1702 */
1703 mutex_lock(&local->chanctx_mtx);
1704 list_for_each_entry(ctx, &local->chanctx_list, list)
1705 ctx->driver_present = false;
1706 mutex_unlock(&local->chanctx_mtx);
1707
1708 cfg80211_shutdown_all_interfaces(local->hw.wiphy);
1709}
1710
153a5fc4
SG		 1711static void ieee80211_assign_chanctx(struct ieee80211_local *local,
1712 struct ieee80211_sub_if_data *sdata)
1713{
1714 struct ieee80211_chanctx_conf *conf;
1715 struct ieee80211_chanctx *ctx;
1716
1717 if (!local->use_chanctx)
1718 return;
1719
1720 mutex_lock(&local->chanctx_mtx);
1721 conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
1722 lockdep_is_held(&local->chanctx_mtx));
1723 if (conf) {
1724 ctx = container_of(conf, struct ieee80211_chanctx, conf);
1725 drv_assign_vif_chanctx(local, sdata, ctx);
1726 }
1727 mutex_unlock(&local->chanctx_mtx);
1728}
1729
1ea2c864
JB		 1730static void ieee80211_reconfig_stations(struct ieee80211_sub_if_data *sdata)
1731{
1732 struct ieee80211_local *local = sdata->local;
1733 struct sta_info *sta;
1734
1735 /* add STAs back */
1736 mutex_lock(&local->sta_mtx);
1737 list_for_each_entry(sta, &local->sta_list, list) {
1738 enum ieee80211_sta_state state;
1739
1740 if (!sta->uploaded || sta->sdata != sdata)
1741 continue;
1742
1743 for (state = IEEE80211_STA_NOTEXIST;
1744 state < sta->sta_state; state++)
1745 WARN_ON(drv_sta_state(local, sta->sdata, sta, state,
1746 state + 1));
1747 }
1748 mutex_unlock(&local->sta_mtx);
1749}
1750
f2753ddb
JB		 1751int ieee80211_reconfig(struct ieee80211_local *local)
1752{
1753 struct ieee80211_hw *hw = &local->hw;
1754 struct ieee80211_sub_if_data *sdata;
55de908a 1755 struct ieee80211_chanctx *ctx;
f2753ddb 1756 struct sta_info *sta;
2683d65b 1757 int res, i;
d888130a 1758 bool reconfig_due_to_wowlan = false;
d43c6b6e 1759 struct ieee80211_sub_if_data *sched_scan_sdata;
6ea0a69c 1760 struct cfg80211_sched_scan_request *sched_scan_req;
d43c6b6e 1761 bool sched_scan_stopped = false;
b0485e9f 1762 bool suspended = local->suspended;
d888130a 1763
0f8b8245
EP		 1764 /* nothing to do if HW shouldn't run */
1765 if (!local->open_count)
1766 goto wake_up;
1767
8f21b0ad 1768#ifdef CONFIG_PM
b0485e9f 1769 if (suspended)
ceb99fe0 1770 local->resuming = true;
f2753ddb 1771
eecc4800 1772 if (local->wowlan) {
b0485e9f
EP		 1773 /*
1774 * In the wowlan case, both mac80211 and the device
1775 * are functional when the resume op is called, so
1776 * clear local->suspended so the device could operate
1777 * normally (e.g. pass rx frames).
1778 */
1779 local->suspended = false;
eecc4800 1780 res = drv_resume(local);
27b3eb9c 1781 local->wowlan = false;
eecc4800
JB		 1782 if (res < 0) {
1783 local->resuming = false;
1784 return res;
1785 }
1786 if (res == 0)
1787 goto wake_up;
1788 WARN_ON(res > 1);
1789 /*
1790 * res is 1, which means the driver requested
1791 * to go through a regular reset on wakeup.
b0485e9f 1792 * restore local->suspended in this case.
eecc4800 1793 */
d888130a 1794 reconfig_due_to_wowlan = true;
b0485e9f 1795 local->suspended = true;
eecc4800
JB		 1796 }
1797#endif
f2753ddb 1798
43d6df00
EP		 1799 /*
1800 * In case of hw_restart during suspend (without wowlan),
1801 * cancel restart work, as we are reconfiguring the device
1802 * anyway.
1803 * Note that restart_work is scheduled on a frozen workqueue,
1804 * so we can't deadlock in this case.
1805 */
1806 if (suspended && local->in_reconfig && !reconfig_due_to_wowlan)
1807 cancel_work_sync(&local->restart_work);
1808
968a76ce
EP		 1809 local->started = false;
1810
94f9b97b
JB		 1811 /*
1812 * Upon resume hardware can sometimes be goofy due to
1813 * various platform / driver / bus issues, so restarting
1814 * the device may at times not work immediately. Propagate
1815 * the error.
1816 */
1817 res = drv_start(local);
1818 if (res) {
b0485e9f 1819 if (suspended)
f6837ba8
JB		 1820 WARN(1, "Hardware became unavailable upon resume. This could be a software issue prior to suspend or a hardware issue.\n");
1821 else
1822 WARN(1, "Hardware became unavailable during restart.\n");
1823 ieee80211_handle_reconfig_failure(local);
94f9b97b 1824 return res;
f2753ddb
JB		 1825 }
1826
7f281975
YAP		 1827 /* setup fragmentation threshold */
1828 drv_set_frag_threshold(local, hw->wiphy->frag_threshold);
1829
1830 /* setup RTS threshold */
1831 drv_set_rts_threshold(local, hw->wiphy->rts_threshold);
1832
1833 /* reset coverage class */
1834 drv_set_coverage_class(local, hw->wiphy->coverage_class);
1835
94f9b97b
JB		 1836 ieee80211_led_radio(local, true);
1837 ieee80211_mod_tpt_led_trig(local,
1838 IEEE80211_TPT_LEDTRIG_FL_RADIO, 0);
1839
f2753ddb 1840 /* add interfaces */
4b6f1dd6
JB		 1841 sdata = rtnl_dereference(local->monitor_sdata);
1842 if (sdata) {
3c3e21e7
JB		 1843 /* in HW restart it exists already */
1844 WARN_ON(local->resuming);
4b6f1dd6
JB		 1845 res = drv_add_interface(local, sdata);
1846 if (WARN_ON(res)) {
0c2bef46 1847 RCU_INIT_POINTER(local->monitor_sdata, NULL);
4b6f1dd6
JB		 1848 synchronize_net();
1849 kfree(sdata);
1850 }
1851 }
1852
f2753ddb
JB		 1853 list_for_each_entry(sdata, &local->interfaces, list) {
1854 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1855 sdata->vif.type != NL80211_IFTYPE_MONITOR &&
c8fff3dc 1856 ieee80211_sdata_running(sdata)) {
7b7eab6f 1857 res = drv_add_interface(local, sdata);
c8fff3dc
LC		 1858 if (WARN_ON(res))
1859 break;
1860 }
1861 }
1862
1863 /* If adding any of the interfaces failed above, roll back and
1864 * report failure.
1865 */
1866 if (res) {
1867 list_for_each_entry_continue_reverse(sdata, &local->interfaces,
1868 list)
1869 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1870 sdata->vif.type != NL80211_IFTYPE_MONITOR &&
1871 ieee80211_sdata_running(sdata))
1872 drv_remove_interface(local, sdata);
1873 ieee80211_handle_reconfig_failure(local);
1874 return res;
f2753ddb
JB		 1875 }
1876
55de908a 1877 /* add channel contexts */
f0dea9c7
AS		 1878 if (local->use_chanctx) {
1879 mutex_lock(&local->chanctx_mtx);
1880 list_for_each_entry(ctx, &local->chanctx_list, list)
5bcae31d
MK		 1881 if (ctx->replace_state !=
1882 IEEE80211_CHANCTX_REPLACES_OTHER)
1883 WARN_ON(drv_add_chanctx(local, ctx));
f0dea9c7 1884 mutex_unlock(&local->chanctx_mtx);
55de908a 1885
7df180f7
ZG		 1886 sdata = rtnl_dereference(local->monitor_sdata);
1887 if (sdata && ieee80211_sdata_running(sdata))
1888 ieee80211_assign_chanctx(local, sdata);
1889 }
fe5f2559 1890
f2753ddb
JB		 1891 /* reconfigure hardware */
1892 ieee80211_hw_config(local, ~0);
1893
f2753ddb 1894 ieee80211_configure_filter(local);
f2753ddb
JB		 1895
1896 /* Finally also reconfigure all the BSS information */
1897 list_for_each_entry(sdata, &local->interfaces, list) {
ac8dd506
JB		 1898 u32 changed;
1899
9607e6b6 1900 if (!ieee80211_sdata_running(sdata))
f2753ddb 1901 continue;
ac8dd506 1902
1ea2c864
JB		 1903 ieee80211_assign_chanctx(local, sdata);
1904
1905 switch (sdata->vif.type) {
1906 case NL80211_IFTYPE_AP_VLAN:
1907 case NL80211_IFTYPE_MONITOR:
1908 break;
1909 default:
1910 ieee80211_reconfig_stations(sdata);
1911 /* fall through */
1912 case NL80211_IFTYPE_AP: /* AP stations are handled later */
1913 for (i = 0; i < IEEE80211_NUM_ACS; i++)
1914 drv_conf_tx(local, sdata, i,
1915 &sdata->tx_conf[i]);
1916 break;
1917 }
1918
ac8dd506
JB		 1919 /* common change flags for all interface types */
1920 changed = BSS_CHANGED_ERP_CTS_PROT |
1921 BSS_CHANGED_ERP_PREAMBLE |
1922 BSS_CHANGED_ERP_SLOT |
1923 BSS_CHANGED_HT |
1924 BSS_CHANGED_BASIC_RATES |
1925 BSS_CHANGED_BEACON_INT |
1926 BSS_CHANGED_BSSID |
4ced3f74 1927 BSS_CHANGED_CQM |
55de47f6 1928 BSS_CHANGED_QOS |
1ea6f9c0
JB		 1929 BSS_CHANGED_IDLE |
1930 BSS_CHANGED_TXPOWER;
ac8dd506 1931
b5a33d52 1932 if (sdata->vif.mu_mimo_owner)
23a1f8d4
SS		 1933 changed |= BSS_CHANGED_MU_GROUPS;
1934
f2753ddb
JB		 1935 switch (sdata->vif.type) {
1936 case NL80211_IFTYPE_STATION:
0d392e93 1937 changed |= BSS_CHANGED_ASSOC |
ab095877
EP		 1938 BSS_CHANGED_ARP_FILTER |
1939 BSS_CHANGED_PS;
c65dd147 1940
989c6505
AB		 1941 /* Re-send beacon info report to the driver */
1942 if (sdata->u.mgd.have_beacon)
1943 changed |= BSS_CHANGED_BEACON_INFO;
c65dd147 1944
8d61ffa5 1945 sdata_lock(sdata);
ac8dd506 1946 ieee80211_bss_info_change_notify(sdata, changed);
8d61ffa5 1947 sdata_unlock(sdata);
ac8dd506 1948 break;
6e0bd6c3 1949 case NL80211_IFTYPE_OCB:
239281f8
RL		 1950 changed |= BSS_CHANGED_OCB;
1951 ieee80211_bss_info_change_notify(sdata, changed);
6e0bd6c3 1952 break;
f2753ddb 1953 case NL80211_IFTYPE_ADHOC:
ac8dd506
JB		 1954 changed |= BSS_CHANGED_IBSS;
1955 /* fall through */
f2753ddb 1956 case NL80211_IFTYPE_AP:
339afbf4 1957 changed |= BSS_CHANGED_SSID | BSS_CHANGED_P2P_PS;
e7979ac7 1958
1041638f 1959 if (sdata->vif.type == NL80211_IFTYPE_AP) {
e7979ac7
AN		 1960 changed |= BSS_CHANGED_AP_PROBE_RESP;
1961
1041638f
JB		 1962 if (rcu_access_pointer(sdata->u.ap.beacon))
1963 drv_start_ap(local, sdata);
1964 }
1965
7827493b 1966 /* fall through */
f2753ddb 1967 case NL80211_IFTYPE_MESH_POINT:
8da34932
JB		 1968 if (sdata->vif.bss_conf.enable_beacon) {
1969 changed |= BSS_CHANGED_BEACON |
1970 BSS_CHANGED_BEACON_ENABLED;
1971 ieee80211_bss_info_change_notify(sdata, changed);
1972 }
f2753ddb
JB		 1973 break;
1974 case NL80211_IFTYPE_WDS:
f2753ddb
JB		 1975 case NL80211_IFTYPE_AP_VLAN:
1976 case NL80211_IFTYPE_MONITOR:
98104fde 1977 case NL80211_IFTYPE_P2P_DEVICE:
b205786e 1978 /* nothing to do */
f142c6b9 1979 break;
f2753ddb 1980 case NL80211_IFTYPE_UNSPECIFIED:
2e161f78 1981 case NUM_NL80211_IFTYPES:
2ca27bcf
JB		 1982 case NL80211_IFTYPE_P2P_CLIENT:
1983 case NL80211_IFTYPE_P2P_GO:
f2753ddb
JB		 1984 WARN_ON(1);
1985 break;
1986 }
1987 }
1988
4a733ef1 1989 ieee80211_recalc_ps(local);
8e1b23b9 1990
6e1b1b24
EP		 1991 /*
1992 * The sta might be in psm against the ap (e.g. because
1993 * this was the state before a hw restart), so we
1994 * explicitly send a null packet in order to make sure
1995 * it'll sync against the ap (and get out of psm).
1996 */
1997 if (!(local->hw.conf.flags & IEEE80211_CONF_PS)) {
1998 list_for_each_entry(sdata, &local->interfaces, list) {
1999 if (sdata->vif.type != NL80211_IFTYPE_STATION)
2000 continue;
20f544ee
JB		 2001 if (!sdata->u.mgd.associated)
2002 continue;
6e1b1b24 2003
076cdcb1 2004 ieee80211_send_nullfunc(local, sdata, false);
6e1b1b24
EP		 2005 }
2006 }
2007
2e8d397e
AN		 2008 /* APs are now beaconing, add back stations */
2009 mutex_lock(&local->sta_mtx);
2010 list_for_each_entry(sta, &local->sta_list, list) {
2011 enum ieee80211_sta_state state;
2012
2013 if (!sta->uploaded)
2014 continue;
2015
2016 if (sta->sdata->vif.type != NL80211_IFTYPE_AP)
2017 continue;
2018
2019 for (state = IEEE80211_STA_NOTEXIST;
2020 state < sta->sta_state; state++)
2021 WARN_ON(drv_sta_state(local, sta->sdata, sta, state,
2022 state + 1));
2023 }
2024 mutex_unlock(&local->sta_mtx);
2025
7b21aea0 2026 /* add back keys */
f9dca80b
MK		 2027 list_for_each_entry(sdata, &local->interfaces, list)
2028 ieee80211_reset_crypto_tx_tailroom(sdata);
2029
7b21aea0
ES		 2030 list_for_each_entry(sdata, &local->interfaces, list)
2031 if (ieee80211_sdata_running(sdata))
2032 ieee80211_enable_keys(sdata);
2033
0d440ea2
EP		 2034 /* Reconfigure sched scan if it was interrupted by FW restart */
2035 mutex_lock(&local->mtx);
2036 sched_scan_sdata = rcu_dereference_protected(local->sched_scan_sdata,
2037 lockdep_is_held(&local->mtx));
2038 sched_scan_req = rcu_dereference_protected(local->sched_scan_req,
2039 lockdep_is_held(&local->mtx));
2040 if (sched_scan_sdata && sched_scan_req)
2041 /*
2042 * Sched scan stopped, but we don't want to report it. Instead,
2043 * we're trying to reschedule. However, if more than one scan
2044 * plan was set, we cannot reschedule since we don't know which
2045 * scan plan was currently running (and some scan plans may have
2046 * already finished).
2047 */
2048 if (sched_scan_req->n_scan_plans > 1 ||
2049 __ieee80211_request_sched_scan_start(sched_scan_sdata,
b9f628fc
EP		 2050 sched_scan_req)) {
2051 RCU_INIT_POINTER(local->sched_scan_sdata, NULL);
2052 RCU_INIT_POINTER(local->sched_scan_req, NULL);
0d440ea2 2053 sched_scan_stopped = true;
b9f628fc 2054 }
0d440ea2
EP		 2055 mutex_unlock(&local->mtx);
2056
2057 if (sched_scan_stopped)
2058 cfg80211_sched_scan_stopped_rtnl(local->hw.wiphy);
2059
c6209488 2060 wake_up:
470f4d61
EP		 2061 if (local->in_reconfig) {
2062 local->in_reconfig = false;
2063 barrier();
2064
2065 /* Restart deferred ROCs */
2066 mutex_lock(&local->mtx);
2067 ieee80211_start_next_roc(local);
2068 mutex_unlock(&local->mtx);
2069 }
04800ada 2070
3c3e21e7
JB		 2071 if (local->monitors == local->open_count && local->monitors > 0)
2072 ieee80211_add_virtual_monitor(local);
2073
2a419056
JB		 2074 /*
2075 * Clear the WLAN_STA_BLOCK_BA flag so new aggregation
2076 * sessions can be established after a resume.
2077 *
2078 * Also tear down aggregation sessions since reconfiguring
2079 * them in a hardware restart scenario is not easily done
2080 * right now, and the hardware will have lost information
2081 * about the sessions, but we and the AP still think they
2082 * are active. This is really a workaround though.
2083 */
30686bf7 2084 if (ieee80211_hw_check(hw, AMPDU_AGGREGATION)) {
2a419056
JB		 2085 mutex_lock(&local->sta_mtx);
2086
2087 list_for_each_entry(sta, &local->sta_list, list) {
27392719
EP		 2088 if (!local->resuming)
2089 ieee80211_sta_tear_down_BA_sessions(
2090 sta, AGG_STOP_LOCAL_REQUEST);
c2c98fde 2091 clear_sta_flag(sta, WLAN_STA_BLOCK_BA);
74e2bd1f 2092 }
2a419056
JB		 2093
2094 mutex_unlock(&local->sta_mtx);
74e2bd1f 2095 }
74e2bd1f 2096
445ea4e8 2097 ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
cca07b00
LC		 2098 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
2099 false);
f2753ddb 2100
5bb644a0
JB		 2101 /*
2102 * If this is for hw restart things are still running.
2103 * We may want to change that later, however.
2104 */
b0485e9f 2105 if (local->open_count && (!suspended || reconfig_due_to_wowlan))
cf2c92d8 2106 drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_RESTART);
8f21b0ad 2107
b0485e9f 2108 if (!suspended)
5bb644a0
JB		 2109 return 0;
2110
2111#ifdef CONFIG_PM
ceb99fe0 2112 /* first set suspended false, then resuming */
5bb644a0 2113 local->suspended = false;
ceb99fe0
JB		 2114 mb();
2115 local->resuming = false;
5bb644a0 2116
74430f94 2117 ieee80211_flush_completed_scan(local, false);
9120d94e 2118
0f8b8245 2119 if (local->open_count && !reconfig_due_to_wowlan)
cf2c92d8
EP		 2120 drv_reconfig_complete(local, IEEE80211_RECONFIG_TYPE_SUSPEND);
2121
b8360ab8
JB		 2122 list_for_each_entry(sdata, &local->interfaces, list) {
2123 if (!ieee80211_sdata_running(sdata))
2124 continue;
2125 if (sdata->vif.type == NL80211_IFTYPE_STATION)
2126 ieee80211_sta_restart(sdata);
2127 }
2128
26d59535 2129 mod_timer(&local->sta_cleanup, jiffies + 1);
5bb644a0
JB		 2130#else
2131 WARN_ON(1);
2132#endif
d43c6b6e 2133
f2753ddb
JB		 2134 return 0;
2135}
42935eca 2136
95acac61
JB		 2137void ieee80211_resume_disconnect(struct ieee80211_vif *vif)
2138{
2139 struct ieee80211_sub_if_data *sdata;
2140 struct ieee80211_local *local;
2141 struct ieee80211_key *key;
2142
2143 if (WARN_ON(!vif))
2144 return;
2145
2146 sdata = vif_to_sdata(vif);
2147 local = sdata->local;
2148
2149 if (WARN_ON(!local->resuming))
2150 return;
2151
2152 if (WARN_ON(vif->type != NL80211_IFTYPE_STATION))
2153 return;
2154
2155 sdata->flags |= IEEE80211_SDATA_DISCONNECT_RESUME;
2156
2157 mutex_lock(&local->key_mtx);
2158 list_for_each_entry(key, &sdata->key_list, list)
2159 key->flags |= KEY_FLAG_TAINTED;
2160 mutex_unlock(&local->key_mtx);
2161}
2162EXPORT_SYMBOL_GPL(ieee80211_resume_disconnect);
2163
04ecd257 2164void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata)
0f78231b 2165{
04ecd257
JB		 2166 struct ieee80211_local *local = sdata->local;
2167 struct ieee80211_chanctx_conf *chanctx_conf;
2168 struct ieee80211_chanctx *chanctx;
025e6be2 2169
04ecd257 2170 mutex_lock(&local->chanctx_mtx);
0f78231b 2171
04ecd257
JB		 2172 chanctx_conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
2173 lockdep_is_held(&local->chanctx_mtx));
0f78231b 2174
c189a685
AO		 2175 /*
2176 * This function can be called from a work, thus it may be possible
2177 * that the chanctx_conf is removed (due to a disconnection, for
2178 * example).
2179 * So nothing should be done in such case.
2180 */
2181 if (!chanctx_conf)
5d8e4237 2182 goto unlock;
0f78231b 2183
04ecd257
JB		 2184 chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf);
2185 ieee80211_recalc_smps_chanctx(local, chanctx);
5d8e4237 2186 unlock:
04ecd257 2187 mutex_unlock(&local->chanctx_mtx);
0f78231b 2188}
8e664fb3 2189
21f659bf
EP		 2190void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata)
2191{
2192 struct ieee80211_local *local = sdata->local;
2193 struct ieee80211_chanctx_conf *chanctx_conf;
2194 struct ieee80211_chanctx *chanctx;
2195
2196 mutex_lock(&local->chanctx_mtx);
2197
2198 chanctx_conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
2199 lockdep_is_held(&local->chanctx_mtx));
2200
2201 if (WARN_ON_ONCE(!chanctx_conf))
2202 goto unlock;
2203
2204 chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf);
2205 ieee80211_recalc_chanctx_min_def(local, chanctx);
2206 unlock:
2207 mutex_unlock(&local->chanctx_mtx);
2208}
2209
8e664fb3
JB		 2210size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset)
2211{
2212 size_t pos = offset;
2213
2214 while (pos < ielen && ies[pos] != WLAN_EID_VENDOR_SPECIFIC)
2215 pos += 2 + ies[pos + 1];
2216
2217 return pos;
2218}
615f7b9b
MV		 2219
2220static void _ieee80211_enable_rssi_reports(struct ieee80211_sub_if_data *sdata,
2221 int rssi_min_thold,
2222 int rssi_max_thold)
2223{
2224 trace_api_enable_rssi_reports(sdata, rssi_min_thold, rssi_max_thold);
2225
2226 if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
2227 return;
2228
2229 /*
2230 * Scale up threshold values before storing it, as the RSSI averaging
2231 * algorithm uses a scaled up value as well. Change this scaling
2232 * factor if the RSSI averaging algorithm changes.
2233 */
2234 sdata->u.mgd.rssi_min_thold = rssi_min_thold*16;
2235 sdata->u.mgd.rssi_max_thold = rssi_max_thold*16;
2236}
2237
2238void ieee80211_enable_rssi_reports(struct ieee80211_vif *vif,
2239 int rssi_min_thold,
2240 int rssi_max_thold)
2241{
2242 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2243
2244 WARN_ON(rssi_min_thold == rssi_max_thold ||
2245 rssi_min_thold > rssi_max_thold);
2246
2247 _ieee80211_enable_rssi_reports(sdata, rssi_min_thold,
2248 rssi_max_thold);
2249}
2250EXPORT_SYMBOL(ieee80211_enable_rssi_reports);
2251
2252void ieee80211_disable_rssi_reports(struct ieee80211_vif *vif)
2253{
2254 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2255
2256 _ieee80211_enable_rssi_reports(sdata, 0, 0);
2257}
2258EXPORT_SYMBOL(ieee80211_disable_rssi_reports);
768db343 2259
ef96a842 2260u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
42e7aa77
AS		 2261 u16 cap)
2262{
2263 __le16 tmp;
2264
2265 *pos++ = WLAN_EID_HT_CAPABILITY;
2266 *pos++ = sizeof(struct ieee80211_ht_cap);
2267 memset(pos, 0, sizeof(struct ieee80211_ht_cap));
2268
2269 /* capability flags */
2270 tmp = cpu_to_le16(cap);
2271 memcpy(pos, &tmp, sizeof(u16));
2272 pos += sizeof(u16);
2273
2274 /* AMPDU parameters */
ef96a842
BG		 2275 *pos++ = ht_cap->ampdu_factor |
2276 (ht_cap->ampdu_density <<
42e7aa77
AS		 2277 IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT);
2278
2279 /* MCS set */
ef96a842
BG		 2280 memcpy(pos, &ht_cap->mcs, sizeof(ht_cap->mcs));
2281 pos += sizeof(ht_cap->mcs);
42e7aa77
AS		 2282
2283 /* extended capabilities */
2284 pos += sizeof(__le16);
2285
2286 /* BF capabilities */
2287 pos += sizeof(__le32);
2288
2289 /* antenna selection */
2290 pos += sizeof(u8);
2291
2292 return pos;
2293}
2294
ba0afa2f 2295u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
cc3983d8 2296 u32 cap)
ba0afa2f
MP		 2297{
2298 __le32 tmp;
2299
2300 *pos++ = WLAN_EID_VHT_CAPABILITY;
d4950281
MP		 2301 *pos++ = sizeof(struct ieee80211_vht_cap);
2302 memset(pos, 0, sizeof(struct ieee80211_vht_cap));
ba0afa2f
MP		 2303
2304 /* capability flags */
2305 tmp = cpu_to_le32(cap);
2306 memcpy(pos, &tmp, sizeof(u32));
2307 pos += sizeof(u32);
2308
2309 /* VHT MCS set */
2310 memcpy(pos, &vht_cap->vht_mcs, sizeof(vht_cap->vht_mcs));
2311 pos += sizeof(vht_cap->vht_mcs);
2312
2313 return pos;
2314}
2315
074d46d1 2316u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
4bf88530 2317 const struct cfg80211_chan_def *chandef,
57f255f5 2318 u16 prot_mode, bool rifs_mode)
42e7aa77 2319{
074d46d1 2320 struct ieee80211_ht_operation *ht_oper;
42e7aa77 2321 /* Build HT Information */
074d46d1
JB		 2322 *pos++ = WLAN_EID_HT_OPERATION;
2323 *pos++ = sizeof(struct ieee80211_ht_operation);
2324 ht_oper = (struct ieee80211_ht_operation *)pos;
4bf88530
JB		 2325 ht_oper->primary_chan = ieee80211_frequency_to_channel(
2326 chandef->chan->center_freq);
2327 switch (chandef->width) {
2328 case NL80211_CHAN_WIDTH_160:
2329 case NL80211_CHAN_WIDTH_80P80:
2330 case NL80211_CHAN_WIDTH_80:
2331 case NL80211_CHAN_WIDTH_40:
2332 if (chandef->center_freq1 > chandef->chan->center_freq)
2333 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
2334 else
2335 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
42e7aa77 2336 break;
42e7aa77 2337 default:
074d46d1 2338 ht_oper->ht_param = IEEE80211_HT_PARAM_CHA_SEC_NONE;
42e7aa77
AS		 2339 break;
2340 }
aee286c2 2341 if (ht_cap->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 &&
4bf88530
JB		 2342 chandef->width != NL80211_CHAN_WIDTH_20_NOHT &&
2343 chandef->width != NL80211_CHAN_WIDTH_20)
074d46d1 2344 ht_oper->ht_param |= IEEE80211_HT_PARAM_CHAN_WIDTH_ANY;
ff3cc5f4 2345
57f255f5
AN		 2346 if (rifs_mode)
2347 ht_oper->ht_param |= IEEE80211_HT_PARAM_RIFS_MODE;
2348
431e3154 2349 ht_oper->operation_mode = cpu_to_le16(prot_mode);
074d46d1 2350 ht_oper->stbc_param = 0x0000;
42e7aa77
AS		 2351
2352 /* It seems that Basic MCS set and Supported MCS set
2353 are identical for the first 10 bytes */
074d46d1
JB		 2354 memset(&ht_oper->basic_set, 0, 16);
2355 memcpy(&ht_oper->basic_set, &ht_cap->mcs, 10);
42e7aa77 2356
074d46d1 2357 return pos + sizeof(struct ieee80211_ht_operation);
42e7aa77
AS		 2358}
2359
fb28ec0c
AN		 2360u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
2361 const struct cfg80211_chan_def *chandef)
2362{
2363 struct ieee80211_vht_operation *vht_oper;
2364
2365 *pos++ = WLAN_EID_VHT_OPERATION;
2366 *pos++ = sizeof(struct ieee80211_vht_operation);
2367 vht_oper = (struct ieee80211_vht_operation *)pos;
2368 vht_oper->center_freq_seg1_idx = ieee80211_frequency_to_channel(
2369 chandef->center_freq1);
2370 if (chandef->center_freq2)
2371 vht_oper->center_freq_seg2_idx =
2372 ieee80211_frequency_to_channel(chandef->center_freq2);
f020ae40
CYY		 2373 else
2374 vht_oper->center_freq_seg2_idx = 0x00;
fb28ec0c
AN		 2375
2376 switch (chandef->width) {
2377 case NL80211_CHAN_WIDTH_160:
23665aaf
JM		 2378 /*
2379 * Convert 160 MHz channel width to new style as interop
2380 * workaround.
2381 */
2382 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ;
2383 vht_oper->center_freq_seg2_idx = vht_oper->center_freq_seg1_idx;
2384 if (chandef->chan->center_freq < chandef->center_freq1)
2385 vht_oper->center_freq_seg1_idx -= 8;
2386 else
2387 vht_oper->center_freq_seg1_idx += 8;
fb28ec0c
AN		 2388 break;
2389 case NL80211_CHAN_WIDTH_80P80:
23665aaf
JM		 2390 /*
2391 * Convert 80+80 MHz channel width to new style as interop
2392 * workaround.
2393 */
2394 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ;
fb28ec0c
AN		 2395 break;
2396 case NL80211_CHAN_WIDTH_80:
2397 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ;
2398 break;
2399 default:
2400 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_USE_HT;
2401 break;
2402 }
2403
2404 /* don't require special VHT peer rates */
2405 vht_oper->basic_mcs_set = cpu_to_le16(0xffff);
2406
2407 return pos + sizeof(struct ieee80211_vht_operation);
2408}
2409
8ac3c704
JB		 2410bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper,
2411 struct cfg80211_chan_def *chandef)
42e7aa77
AS		 2412{
2413 enum nl80211_channel_type channel_type;
2414
8ac3c704
JB		 2415 if (!ht_oper)
2416 return false;
42e7aa77 2417
074d46d1 2418 switch (ht_oper->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) {
42e7aa77
AS		 2419 case IEEE80211_HT_PARAM_CHA_SEC_NONE:
2420 channel_type = NL80211_CHAN_HT20;
2421 break;
2422 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
2423 channel_type = NL80211_CHAN_HT40PLUS;
2424 break;
2425 case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
2426 channel_type = NL80211_CHAN_HT40MINUS;
2427 break;
2428 default:
2429 channel_type = NL80211_CHAN_NO_HT;
8ac3c704 2430 return false;
42e7aa77
AS		 2431 }
2432
8ac3c704
JB		 2433 cfg80211_chandef_create(chandef, chandef->chan, channel_type);
2434 return true;
42e7aa77
AS		 2435}
2436
8ac3c704
JB		 2437bool ieee80211_chandef_vht_oper(const struct ieee80211_vht_operation *oper,
2438 struct cfg80211_chan_def *chandef)
abcff6ef 2439{
8ac3c704
JB		 2440 struct cfg80211_chan_def new = *chandef;
2441 int cf1, cf2;
2442
abcff6ef 2443 if (!oper)
8ac3c704 2444 return false;
abcff6ef 2445
8ac3c704
JB		 2446 cf1 = ieee80211_channel_to_frequency(oper->center_freq_seg1_idx,
2447 chandef->chan->band);
2448 cf2 = ieee80211_channel_to_frequency(oper->center_freq_seg2_idx,
2449 chandef->chan->band);
abcff6ef
JD		 2450
2451 switch (oper->chan_width) {
2452 case IEEE80211_VHT_CHANWIDTH_USE_HT:
2453 break;
2454 case IEEE80211_VHT_CHANWIDTH_80MHZ:
8ac3c704
JB		 2455 new.width = NL80211_CHAN_WIDTH_80;
2456 new.center_freq1 = cf1;
23665aaf
JM		 2457 /* If needed, adjust based on the newer interop workaround. */
2458 if (oper->center_freq_seg2_idx) {
2459 unsigned int diff;
2460
2461 diff = abs(oper->center_freq_seg2_idx -
2462 oper->center_freq_seg1_idx);
2463 if (diff == 8) {
2464 new.width = NL80211_CHAN_WIDTH_160;
2465 new.center_freq1 = cf2;
2466 } else if (diff > 8) {
2467 new.width = NL80211_CHAN_WIDTH_80P80;
2468 new.center_freq2 = cf2;
2469 }
2470 }
abcff6ef
JD		 2471 break;
2472 case IEEE80211_VHT_CHANWIDTH_160MHZ:
8ac3c704
JB		 2473 new.width = NL80211_CHAN_WIDTH_160;
2474 new.center_freq1 = cf1;
abcff6ef
JD		 2475 break;
2476 case IEEE80211_VHT_CHANWIDTH_80P80MHZ:
8ac3c704
JB		 2477 new.width = NL80211_CHAN_WIDTH_80P80;
2478 new.center_freq1 = cf1;
2479 new.center_freq2 = cf2;
abcff6ef
JD		 2480 break;
2481 default:
8ac3c704 2482 return false;
abcff6ef
JD		 2483 }
2484
8ac3c704
JB		 2485 if (!cfg80211_chandef_valid(&new))
2486 return false;
2487
2488 *chandef = new;
2489 return true;
abcff6ef
JD		 2490}
2491
2103dec1
SW		 2492int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef,
2493 const struct ieee80211_supported_band *sband,
2494 const u8 *srates, int srates_len, u32 *rates)
2495{
2496 u32 rate_flags = ieee80211_chandef_rate_flags(chandef);
2497 int shift = ieee80211_chandef_get_shift(chandef);
2498 struct ieee80211_rate *br;
2499 int brate, rate, i, j, count = 0;
2500
2501 *rates = 0;
2502
2503 for (i = 0; i < srates_len; i++) {
2504 rate = srates[i] & 0x7f;
2505
2506 for (j = 0; j < sband->n_bitrates; j++) {
2507 br = &sband->bitrates[j];
2508 if ((rate_flags & br->flags) != rate_flags)
2509 continue;
2510
2511 brate = DIV_ROUND_UP(br->bitrate, (1 << shift) * 5);
2512 if (brate == rate) {
2513 *rates |= BIT(j);
2514 count++;
2515 break;
2516 }
2517 }
2518 }
2519 return count;
2520}
2521
fc8a7321 2522int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
6b77863b 2523 struct sk_buff *skb, bool need_basic,
57fbcce3 2524 enum nl80211_band band)
768db343 2525{
768db343
AN		 2526 struct ieee80211_local *local = sdata->local;
2527 struct ieee80211_supported_band *sband;
2103dec1 2528 int rate, shift;
768db343 2529 u8 i, rates, *pos;
fc8a7321 2530 u32 basic_rates = sdata->vif.bss_conf.basic_rates;
2103dec1 2531 u32 rate_flags;
768db343 2532
2103dec1
SW		 2533 shift = ieee80211_vif_get_shift(&sdata->vif);
2534 rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef);
6b77863b 2535 sband = local->hw.wiphy->bands[band];
2103dec1
SW		 2536 rates = 0;
2537 for (i = 0; i < sband->n_bitrates; i++) {
2538 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
2539 continue;
2540 rates++;
2541 }
768db343
AN		 2542 if (rates > 8)
2543 rates = 8;
2544
2545 if (skb_tailroom(skb) < rates + 2)
2546 return -ENOMEM;
2547
2548 pos = skb_put(skb, rates + 2);
2549 *pos++ = WLAN_EID_SUPP_RATES;
2550 *pos++ = rates;
2551 for (i = 0; i < rates; i++) {
657c3e0c 2552 u8 basic = 0;
2103dec1
SW		 2553 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
2554 continue;
2555
657c3e0c
AN		 2556 if (need_basic && basic_rates & BIT(i))
2557 basic = 0x80;
768db343 2558 rate = sband->bitrates[i].bitrate;
2103dec1
SW		 2559 rate = DIV_ROUND_UP(sband->bitrates[i].bitrate,
2560 5 * (1 << shift));
2561 *pos++ = basic | (u8) rate;
768db343
AN		 2562 }
2563
2564 return 0;
2565}
2566
fc8a7321 2567int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
6b77863b 2568 struct sk_buff *skb, bool need_basic,
57fbcce3 2569 enum nl80211_band band)
768db343 2570{
768db343
AN		 2571 struct ieee80211_local *local = sdata->local;
2572 struct ieee80211_supported_band *sband;
cc63ec76 2573 int rate, shift;
768db343 2574 u8 i, exrates, *pos;
fc8a7321 2575 u32 basic_rates = sdata->vif.bss_conf.basic_rates;
2103dec1
SW		 2576 u32 rate_flags;
2577
2578 rate_flags = ieee80211_chandef_rate_flags(&sdata->vif.bss_conf.chandef);
2579 shift = ieee80211_vif_get_shift(&sdata->vif);
768db343 2580
6b77863b 2581 sband = local->hw.wiphy->bands[band];
2103dec1
SW		 2582 exrates = 0;
2583 for (i = 0; i < sband->n_bitrates; i++) {
2584 if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
2585 continue;
2586 exrates++;
2587 }
2588
768db343
AN		 2589 if (exrates > 8)
2590 exrates -= 8;
2591 else
2592 exrates = 0;
2593
2594 if (skb_tailroom(skb) < exrates + 2)
2595 return -ENOMEM;
2596
2597 if (exrates) {
2598 pos = skb_put(skb, exrates + 2);
2599 *pos++ = WLAN_EID_EXT_SUPP_RATES;
2600 *pos++ = exrates;
2601 for (i = 8; i < sband->n_bitrates; i++) {
657c3e0c 2602 u8 basic = 0;
2103dec1
SW		 2603 if ((rate_flags & sband->bitrates[i].flags)
2604 != rate_flags)
2605 continue;
657c3e0c
AN		 2606 if (need_basic && basic_rates & BIT(i))
2607 basic = 0x80;
2103dec1
SW		 2608 rate = DIV_ROUND_UP(sband->bitrates[i].bitrate,
2609 5 * (1 << shift));
2610 *pos++ = basic | (u8) rate;
768db343
AN		 2611 }
2612 }
2613 return 0;
2614}
1dae27f8
WYG		 2615
2616int ieee80211_ave_rssi(struct ieee80211_vif *vif)
2617{
2618 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2619 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2620
be6bcabc
WYG		 2621 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION)) {
2622 /* non-managed type inferfaces */
2623 return 0;
2624 }
338c17ae 2625 return -ewma_beacon_signal_read(&ifmgd->ave_beacon_signal);
1dae27f8 2626}
0d8a0a17 2627EXPORT_SYMBOL_GPL(ieee80211_ave_rssi);
04ecd257
JB		 2628
2629u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs)
2630{
2631 if (!mcs)
2632 return 1;
2633
2634 /* TODO: consider rx_highest */
2635
2636 if (mcs->rx_mask[3])
2637 return 4;
2638 if (mcs->rx_mask[2])
2639 return 3;
2640 if (mcs->rx_mask[1])
2641 return 2;
2642 return 1;
2643}
f4bda337
TP		 2644
2645/**
2646 * ieee80211_calculate_rx_timestamp - calculate timestamp in frame
2647 * @local: mac80211 hw info struct
2648 * @status: RX status
2649 * @mpdu_len: total MPDU length (including FCS)
2650 * @mpdu_offset: offset into MPDU to calculate timestamp at
2651 *
2652 * This function calculates the RX timestamp at the given MPDU offset, taking
2653 * into account what the RX timestamp was. An offset of 0 will just normalize
2654 * the timestamp to TSF at beginning of MPDU reception.
2655 */
2656u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
2657 struct ieee80211_rx_status *status,
2658 unsigned int mpdu_len,
2659 unsigned int mpdu_offset)
2660{
2661 u64 ts = status->mactime;
2662 struct rate_info ri;
2663 u16 rate;
2664
2665 if (WARN_ON(!ieee80211_have_rx_timestamp(status)))
2666 return 0;
2667
2668 memset(&ri, 0, sizeof(ri));
2669
2670 /* Fill cfg80211 rate info */
2671 if (status->flag & RX_FLAG_HT) {
2672 ri.mcs = status->rate_idx;
2673 ri.flags |= RATE_INFO_FLAGS_MCS;
2674 if (status->flag & RX_FLAG_40MHZ)
b51f3bee
JB		 2675 ri.bw = RATE_INFO_BW_40;
2676 else
2677 ri.bw = RATE_INFO_BW_20;
f4bda337
TP		 2678 if (status->flag & RX_FLAG_SHORT_GI)
2679 ri.flags |= RATE_INFO_FLAGS_SHORT_GI;
5614618e
JB		 2680 } else if (status->flag & RX_FLAG_VHT) {
2681 ri.flags |= RATE_INFO_FLAGS_VHT_MCS;
2682 ri.mcs = status->rate_idx;
2683 ri.nss = status->vht_nss;
2684 if (status->flag & RX_FLAG_40MHZ)
b51f3bee
JB		 2685 ri.bw = RATE_INFO_BW_40;
2686 else if (status->vht_flag & RX_VHT_FLAG_80MHZ)
2687 ri.bw = RATE_INFO_BW_80;
2688 else if (status->vht_flag & RX_VHT_FLAG_160MHZ)
2689 ri.bw = RATE_INFO_BW_160;
2690 else
2691 ri.bw = RATE_INFO_BW_20;
5614618e
JB		 2692 if (status->flag & RX_FLAG_SHORT_GI)
2693 ri.flags |= RATE_INFO_FLAGS_SHORT_GI;
f4bda337
TP		 2694 } else {
2695 struct ieee80211_supported_band *sband;
2103dec1
SW		 2696 int shift = 0;
2697 int bitrate;
2698
b51f3bee 2699 if (status->flag & RX_FLAG_10MHZ) {
2103dec1 2700 shift = 1;
b51f3bee
JB		 2701 ri.bw = RATE_INFO_BW_10;
2702 } else if (status->flag & RX_FLAG_5MHZ) {
2103dec1 2703 shift = 2;
b51f3bee
JB		 2704 ri.bw = RATE_INFO_BW_5;
2705 } else {
2706 ri.bw = RATE_INFO_BW_20;
2707 }
f4bda337
TP		 2708
2709 sband = local->hw.wiphy->bands[status->band];
2103dec1
SW		 2710 bitrate = sband->bitrates[status->rate_idx].bitrate;
2711 ri.legacy = DIV_ROUND_UP(bitrate, (1 << shift));
f4a0f0c5
JB		 2712
2713 if (status->flag & RX_FLAG_MACTIME_PLCP_START) {
2714 /* TODO: handle HT/VHT preambles */
57fbcce3 2715 if (status->band == NL80211_BAND_5GHZ) {
f4a0f0c5
JB		 2716 ts += 20 << shift;
2717 mpdu_offset += 2;
2718 } else if (status->flag & RX_FLAG_SHORTPRE) {
2719 ts += 96;
2720 } else {
2721 ts += 192;
2722 }
2723 }
f4bda337
TP		 2724 }
2725
2726 rate = cfg80211_calculate_bitrate(&ri);
d86aa4f8 2727 if (WARN_ONCE(!rate,
f980ebc0
SS		 2728 "Invalid bitrate: flags=0x%llx, idx=%d, vht_nss=%d\n",
2729 (unsigned long long)status->flag, status->rate_idx,
2730 status->vht_nss))
d86aa4f8 2731 return 0;
f4bda337
TP		 2732
2733 /* rewind from end of MPDU */
2734 if (status->flag & RX_FLAG_MACTIME_END)
2735 ts -= mpdu_len * 8 * 10 / rate;
2736
2737 ts += mpdu_offset * 8 * 10 / rate;
2738
2739 return ts;
2740}
164eb02d
SW		 2741
2742void ieee80211_dfs_cac_cancel(struct ieee80211_local *local)
2743{
2744 struct ieee80211_sub_if_data *sdata;
d2859df5 2745 struct cfg80211_chan_def chandef;
164eb02d 2746
34a3740d 2747 mutex_lock(&local->mtx);
164eb02d
SW		 2748 mutex_lock(&local->iflist_mtx);
2749 list_for_each_entry(sdata, &local->interfaces, list) {
34a3740d
JB		 2750 /* it might be waiting for the local->mtx, but then
2751 * by the time it gets it, sdata->wdev.cac_started
2752 * will no longer be true
2753 */
2754 cancel_delayed_work(&sdata->dfs_cac_timer_work);
164eb02d
SW		 2755
2756 if (sdata->wdev.cac_started) {
d2859df5 2757 chandef = sdata->vif.bss_conf.chandef;
164eb02d
SW		 2758 ieee80211_vif_release_channel(sdata);
2759 cfg80211_cac_event(sdata->dev,
d2859df5 2760 &chandef,
164eb02d
SW		 2761 NL80211_RADAR_CAC_ABORTED,
2762 GFP_KERNEL);
2763 }
2764 }
2765 mutex_unlock(&local->iflist_mtx);
34a3740d 2766 mutex_unlock(&local->mtx);
164eb02d
SW		 2767}
2768
2769void ieee80211_dfs_radar_detected_work(struct work_struct *work)
2770{
2771 struct ieee80211_local *local =
2772 container_of(work, struct ieee80211_local, radar_detected_work);
84a3d1c9 2773 struct cfg80211_chan_def chandef = local->hw.conf.chandef;
486cf4c0
MK		 2774 struct ieee80211_chanctx *ctx;
2775 int num_chanctx = 0;
2776
2777 mutex_lock(&local->chanctx_mtx);
2778 list_for_each_entry(ctx, &local->chanctx_list, list) {
2779 if (ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER)
2780 continue;
2781
2782 num_chanctx++;
2783 chandef = ctx->conf.def;
2784 }
2785 mutex_unlock(&local->chanctx_mtx);
164eb02d
SW		 2786
2787 ieee80211_dfs_cac_cancel(local);
2788
486cf4c0
MK		 2789 if (num_chanctx > 1)
2790 /* XXX: multi-channel is not supported yet */
164eb02d 2791 WARN_ON(1);
84a3d1c9 2792 else
164eb02d 2793 cfg80211_radar_event(local->hw.wiphy, &chandef, GFP_KERNEL);
164eb02d
SW		 2794}
2795
2796void ieee80211_radar_detected(struct ieee80211_hw *hw)
2797{
2798 struct ieee80211_local *local = hw_to_local(hw);
2799
2800 trace_api_radar_detected(local);
2801
2802 ieee80211_queue_work(hw, &local->radar_detected_work);
2803}
2804EXPORT_SYMBOL(ieee80211_radar_detected);
e6b7cde4
SW		 2805
2806u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c)
2807{
2808 u32 ret;
2809 int tmp;
2810
2811 switch (c->width) {
2812 case NL80211_CHAN_WIDTH_20:
2813 c->width = NL80211_CHAN_WIDTH_20_NOHT;
2814 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
2815 break;
2816 case NL80211_CHAN_WIDTH_40:
2817 c->width = NL80211_CHAN_WIDTH_20;
2818 c->center_freq1 = c->chan->center_freq;
2819 ret = IEEE80211_STA_DISABLE_40MHZ |
2820 IEEE80211_STA_DISABLE_VHT;
2821 break;
2822 case NL80211_CHAN_WIDTH_80:
2823 tmp = (30 + c->chan->center_freq - c->center_freq1)/20;
2824 /* n_P40 */
2825 tmp /= 2;
2826 /* freq_P40 */
2827 c->center_freq1 = c->center_freq1 - 20 + 40 * tmp;
2828 c->width = NL80211_CHAN_WIDTH_40;
2829 ret = IEEE80211_STA_DISABLE_VHT;
2830 break;
2831 case NL80211_CHAN_WIDTH_80P80:
2832 c->center_freq2 = 0;
2833 c->width = NL80211_CHAN_WIDTH_80;
2834 ret = IEEE80211_STA_DISABLE_80P80MHZ |
2835 IEEE80211_STA_DISABLE_160MHZ;
2836 break;
2837 case NL80211_CHAN_WIDTH_160:
2838 /* n_P20 */
2839 tmp = (70 + c->chan->center_freq - c->center_freq1)/20;
2840 /* n_P80 */
2841 tmp /= 4;
2842 c->center_freq1 = c->center_freq1 - 40 + 80 * tmp;
2843 c->width = NL80211_CHAN_WIDTH_80;
2844 ret = IEEE80211_STA_DISABLE_80P80MHZ |
2845 IEEE80211_STA_DISABLE_160MHZ;
2846 break;
2847 default:
2848 case NL80211_CHAN_WIDTH_20_NOHT:
2849 WARN_ON_ONCE(1);
2850 c->width = NL80211_CHAN_WIDTH_20_NOHT;
2851 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
2852 break;
2853 case NL80211_CHAN_WIDTH_5:
2854 case NL80211_CHAN_WIDTH_10:
2855 WARN_ON_ONCE(1);
2856 /* keep c->width */
2857 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
2858 break;
2859 }
2860
2861 WARN_ON_ONCE(!cfg80211_chandef_valid(c));
2862
2863 return ret;
2864}
687da132
EG		 2865
2866/*
2867 * Returns true if smps_mode_new is strictly more restrictive than
2868 * smps_mode_old.
2869 */
2870bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old,
2871 enum ieee80211_smps_mode smps_mode_new)
2872{
2873 if (WARN_ON_ONCE(smps_mode_old == IEEE80211_SMPS_AUTOMATIC ||
2874 smps_mode_new == IEEE80211_SMPS_AUTOMATIC))
2875 return false;
2876
2877 switch (smps_mode_old) {
2878 case IEEE80211_SMPS_STATIC:
2879 return false;
2880 case IEEE80211_SMPS_DYNAMIC:
2881 return smps_mode_new == IEEE80211_SMPS_STATIC;
2882 case IEEE80211_SMPS_OFF:
2883 return smps_mode_new != IEEE80211_SMPS_OFF;
2884 default:
2885 WARN_ON(1);
2886 }
2887
2888 return false;
2889}
c6da674a
CYY		 2890
2891int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata,
2892 struct cfg80211_csa_settings *csa_settings)
2893{
2894 struct sk_buff *skb;
2895 struct ieee80211_mgmt *mgmt;
2896 struct ieee80211_local *local = sdata->local;
2897 int freq;
2898 int hdr_len = offsetof(struct ieee80211_mgmt, u.action.u.chan_switch) +
2899 sizeof(mgmt->u.action.u.chan_switch);
2900 u8 *pos;
2901
2902 if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
2903 sdata->vif.type != NL80211_IFTYPE_MESH_POINT)
2904 return -EOPNOTSUPP;
2905
2906 skb = dev_alloc_skb(local->tx_headroom + hdr_len +
2907 5 + /* channel switch announcement element */
2908 3 + /* secondary channel offset element */
2909 8); /* mesh channel switch parameters element */
2910 if (!skb)
2911 return -ENOMEM;
2912
2913 skb_reserve(skb, local->tx_headroom);
2914 mgmt = (struct ieee80211_mgmt *)skb_put(skb, hdr_len);
2915 memset(mgmt, 0, hdr_len);
2916 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
2917 IEEE80211_STYPE_ACTION);
2918
2919 eth_broadcast_addr(mgmt->da);
2920 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
2921 if (ieee80211_vif_is_mesh(&sdata->vif)) {
2922 memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN);
2923 } else {
2924 struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
2925 memcpy(mgmt->bssid, ifibss->bssid, ETH_ALEN);
2926 }
2927 mgmt->u.action.category = WLAN_CATEGORY_SPECTRUM_MGMT;
2928 mgmt->u.action.u.chan_switch.action_code = WLAN_ACTION_SPCT_CHL_SWITCH;
2929 pos = skb_put(skb, 5);
2930 *pos++ = WLAN_EID_CHANNEL_SWITCH; /* EID */
2931 *pos++ = 3; /* IE length */
2932 *pos++ = csa_settings->block_tx ? 1 : 0; /* CSA mode */
2933 freq = csa_settings->chandef.chan->center_freq;
2934 *pos++ = ieee80211_frequency_to_channel(freq); /* channel */
2935 *pos++ = csa_settings->count; /* count */
2936
2937 if (csa_settings->chandef.width == NL80211_CHAN_WIDTH_40) {
2938 enum nl80211_channel_type ch_type;
2939
2940 skb_put(skb, 3);
2941 *pos++ = WLAN_EID_SECONDARY_CHANNEL_OFFSET; /* EID */
2942 *pos++ = 1; /* IE length */
2943 ch_type = cfg80211_get_chandef_type(&csa_settings->chandef);
2944 if (ch_type == NL80211_CHAN_HT40PLUS)
2945 *pos++ = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
2946 else
2947 *pos++ = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
2948 }
2949
2950 if (ieee80211_vif_is_mesh(&sdata->vif)) {
2951 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
c6da674a
CYY		 2952
2953 skb_put(skb, 8);
2954 *pos++ = WLAN_EID_CHAN_SWITCH_PARAM; /* EID */
2955 *pos++ = 6; /* IE length */
2956 *pos++ = sdata->u.mesh.mshcfg.dot11MeshTTL; /* Mesh TTL */
2957 *pos = 0x00; /* Mesh Flag: Tx Restrict, Initiator, Reason */
2958 *pos |= WLAN_EID_CHAN_SWITCH_PARAM_INITIATOR;
2959 *pos++ |= csa_settings->block_tx ?
2960 WLAN_EID_CHAN_SWITCH_PARAM_TX_RESTRICT : 0x00;
2961 put_unaligned_le16(WLAN_REASON_MESH_CHAN, pos); /* Reason Cd */
2962 pos += 2;
ca91dc97 2963 put_unaligned_le16(ifmsh->pre_value, pos);/* Precedence Value */
c6da674a 2964 pos += 2;
c6da674a
CYY		 2965 }
2966
2967 ieee80211_tx_skb(sdata, skb);
2968 return 0;
2969}
2475b1cc
MS		 2970
2971bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs)
2972{
2973 return !(cs == NULL || cs->cipher == 0 ||
2974 cs->hdr_len < cs->pn_len + cs->pn_off ||
2975 cs->hdr_len <= cs->key_idx_off ||
2976 cs->key_idx_shift > 7 ||
2977 cs->key_idx_mask == 0);
2978}
2979
2980bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n)
2981{
2982 int i;
2983
2984 /* Ensure we have enough iftype bitmap space for all iftype values */
2985 WARN_ON((NUM_NL80211_IFTYPES / 8 + 1) > sizeof(cs[0].iftype));
2986
2987 for (i = 0; i < n; i++)
2988 if (!ieee80211_cs_valid(&cs[i]))
2989 return false;
2990
2991 return true;
2992}
2993
2994const struct ieee80211_cipher_scheme *
2995ieee80211_cs_get(struct ieee80211_local *local, u32 cipher,
2996 enum nl80211_iftype iftype)
2997{
2998 const struct ieee80211_cipher_scheme *l = local->hw.cipher_schemes;
2999 int n = local->hw.n_cipher_schemes;
3000 int i;
3001 const struct ieee80211_cipher_scheme *cs = NULL;
3002
3003 for (i = 0; i < n; i++) {
3004 if (l[i].cipher == cipher) {
3005 cs = &l[i];
3006 break;
3007 }
3008 }
3009
3010 if (!cs || !(cs->iftype & BIT(iftype)))
3011 return NULL;
3012
3013 return cs;
3014}
3015
3016int ieee80211_cs_headroom(struct ieee80211_local *local,
3017 struct cfg80211_crypto_settings *crypto,
3018 enum nl80211_iftype iftype)
3019{
3020 const struct ieee80211_cipher_scheme *cs;
3021 int headroom = IEEE80211_ENCRYPT_HEADROOM;
3022 int i;
3023
3024 for (i = 0; i < crypto->n_ciphers_pairwise; i++) {
3025 cs = ieee80211_cs_get(local, crypto->ciphers_pairwise[i],
3026 iftype);
3027
3028 if (cs && headroom < cs->hdr_len)
3029 headroom = cs->hdr_len;
3030 }
3031
3032 cs = ieee80211_cs_get(local, crypto->cipher_group, iftype);
3033 if (cs && headroom < cs->hdr_len)
3034 headroom = cs->hdr_len;
3035
3036 return headroom;
3037}
a7022e65
FF		 3038
3039static bool
3040ieee80211_extend_noa_desc(struct ieee80211_noa_data *data, u32 tsf, int i)
3041{
3042 s32 end = data->desc[i].start + data->desc[i].duration - (tsf + 1);
3043 int skip;
3044
3045 if (end > 0)
3046 return false;
3047
519ee691
JD		 3048 /* One shot NOA */
3049 if (data->count[i] == 1)
3050 return false;
3051
3052 if (data->desc[i].interval == 0)
3053 return false;
3054
a7022e65
FF		 3055 /* End time is in the past, check for repetitions */
3056 skip = DIV_ROUND_UP(-end, data->desc[i].interval);
3057 if (data->count[i] < 255) {
3058 if (data->count[i] <= skip) {
3059 data->count[i] = 0;
3060 return false;
3061 }
3062
3063 data->count[i] -= skip;
3064 }
3065
3066 data->desc[i].start += skip * data->desc[i].interval;
3067
3068 return true;
3069}
3070
3071static bool
3072ieee80211_extend_absent_time(struct ieee80211_noa_data *data, u32 tsf,
3073 s32 *offset)
3074{
3075 bool ret = false;
3076 int i;
3077
3078 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) {
3079 s32 cur;
3080
3081 if (!data->count[i])
3082 continue;
3083
3084 if (ieee80211_extend_noa_desc(data, tsf + *offset, i))
3085 ret = true;
3086
3087 cur = data->desc[i].start - tsf;
3088 if (cur > *offset)
3089 continue;
3090
3091 cur = data->desc[i].start + data->desc[i].duration - tsf;
3092 if (cur > *offset)
3093 *offset = cur;
3094 }
3095
3096 return ret;
3097}
3098
3099static u32
3100ieee80211_get_noa_absent_time(struct ieee80211_noa_data *data, u32 tsf)
3101{
3102 s32 offset = 0;
3103 int tries = 0;
3104 /*
3105 * arbitrary limit, used to avoid infinite loops when combined NoA
3106 * descriptors cover the full time period.
3107 */
3108 int max_tries = 5;
3109
3110 ieee80211_extend_absent_time(data, tsf, &offset);
3111 do {
3112 if (!ieee80211_extend_absent_time(data, tsf, &offset))
3113 break;
3114
3115 tries++;
3116 } while (tries < max_tries);
3117
3118 return offset;
3119}
3120
3121void ieee80211_update_p2p_noa(struct ieee80211_noa_data *data, u32 tsf)
3122{
3123 u32 next_offset = BIT(31) - 1;
3124 int i;
3125
3126 data->absent = 0;
3127 data->has_next_tsf = false;
3128 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) {
3129 s32 start;
3130
3131 if (!data->count[i])
3132 continue;
3133
3134 ieee80211_extend_noa_desc(data, tsf, i);
3135 start = data->desc[i].start - tsf;
3136 if (start <= 0)
3137 data->absent |= BIT(i);
3138
3139 if (next_offset > start)
3140 next_offset = start;
3141
3142 data->has_next_tsf = true;
3143 }
3144
3145 if (data->absent)
3146 next_offset = ieee80211_get_noa_absent_time(data, tsf);
3147
3148 data->next_tsf = tsf + next_offset;
3149}
3150EXPORT_SYMBOL(ieee80211_update_p2p_noa);
3151
3152int ieee80211_parse_p2p_noa(const struct ieee80211_p2p_noa_attr *attr,
3153 struct ieee80211_noa_data *data, u32 tsf)
3154{
3155 int ret = 0;
3156 int i;
3157
3158 memset(data, 0, sizeof(*data));
3159
3160 for (i = 0; i < IEEE80211_P2P_NOA_DESC_MAX; i++) {
3161 const struct ieee80211_p2p_noa_desc *desc = &attr->desc[i];
3162
3163 if (!desc->count || !desc->duration)
3164 continue;
3165
3166 data->count[i] = desc->count;
3167 data->desc[i].start = le32_to_cpu(desc->start_time);
3168 data->desc[i].duration = le32_to_cpu(desc->duration);
3169 data->desc[i].interval = le32_to_cpu(desc->interval);
3170
3171 if (data->count[i] > 1 &&
3172 data->desc[i].interval < data->desc[i].duration)
3173 continue;
3174
3175 ieee80211_extend_noa_desc(data, tsf, i);
3176 ret++;
3177 }
3178
3179 if (ret)
3180 ieee80211_update_p2p_noa(data, tsf);
3181
3182 return ret;
3183}
3184EXPORT_SYMBOL(ieee80211_parse_p2p_noa);
057d5f4b
TP		 3185
3186void ieee80211_recalc_dtim(struct ieee80211_local *local,
3187 struct ieee80211_sub_if_data *sdata)
3188{
3189 u64 tsf = drv_get_tsf(local, sdata);
3190 u64 dtim_count = 0;
3191 u16 beacon_int = sdata->vif.bss_conf.beacon_int * 1024;
3192 u8 dtim_period = sdata->vif.bss_conf.dtim_period;
3193 struct ps_data *ps;
3194 u8 bcns_from_dtim;
3195
3196 if (tsf == -1ULL || !beacon_int || !dtim_period)
3197 return;
3198
3199 if (sdata->vif.type == NL80211_IFTYPE_AP ||
3200 sdata->vif.type == NL80211_IFTYPE_AP_VLAN) {
3201 if (!sdata->bss)
3202 return;
3203
3204 ps = &sdata->bss->ps;
3205 } else if (ieee80211_vif_is_mesh(&sdata->vif)) {
3206 ps = &sdata->u.mesh.ps;
3207 } else {
3208 return;
3209 }
3210
3211 /*
3212 * actually finds last dtim_count, mac80211 will update in
3213 * __beacon_add_tim().
3214 * dtim_count = dtim_period - (tsf / bcn_int) % dtim_period
3215 */
3216 do_div(tsf, beacon_int);
3217 bcns_from_dtim = do_div(tsf, dtim_period);
3218 /* just had a DTIM */
3219 if (!bcns_from_dtim)
3220 dtim_count = 0;
3221 else
3222 dtim_count = dtim_period - bcns_from_dtim;
3223
3224 ps->dtim_count = dtim_count;
3225}
73de86a3 3226
71e6195e
MK		 3227static u8 ieee80211_chanctx_radar_detect(struct ieee80211_local *local,
3228 struct ieee80211_chanctx *ctx)
3229{
3230 struct ieee80211_sub_if_data *sdata;
3231 u8 radar_detect = 0;
3232
3233 lockdep_assert_held(&local->chanctx_mtx);
3234
3235 if (WARN_ON(ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED))
3236 return 0;
3237
3238 list_for_each_entry(sdata, &ctx->reserved_vifs, reserved_chanctx_list)
3239 if (sdata->reserved_radar_required)
3240 radar_detect |= BIT(sdata->reserved_chandef.width);
3241
3242 /*
3243 * An in-place reservation context should not have any assigned vifs
3244 * until it replaces the other context.
3245 */
3246 WARN_ON(ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER &&
3247 !list_empty(&ctx->assigned_vifs));
3248
3249 list_for_each_entry(sdata, &ctx->assigned_vifs, assigned_chanctx_list)
3250 if (sdata->radar_required)
3251 radar_detect |= BIT(sdata->vif.bss_conf.chandef.width);
3252
3253 return radar_detect;
3254}
3255
73de86a3
LC		 3256int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata,
3257 const struct cfg80211_chan_def *chandef,
3258 enum ieee80211_chanctx_mode chanmode,
3259 u8 radar_detect)
3260{
3261 struct ieee80211_local *local = sdata->local;
3262 struct ieee80211_sub_if_data *sdata_iter;
3263 enum nl80211_iftype iftype = sdata->wdev.iftype;
3264 int num[NUM_NL80211_IFTYPES];
3265 struct ieee80211_chanctx *ctx;
b6a55015 3266 int num_different_channels = 0;
73de86a3
LC		 3267 int total = 1;
3268
3269 lockdep_assert_held(&local->chanctx_mtx);
3270
3271 if (WARN_ON(hweight32(radar_detect) > 1))
3272 return -EINVAL;
3273
b6a55015
LC		 3274 if (WARN_ON(chandef && chanmode == IEEE80211_CHANCTX_SHARED &&
3275 !chandef->chan))
73de86a3
LC		 3276 return -EINVAL;
3277
b6a55015
LC		 3278 if (chandef)
3279 num_different_channels = 1;
3280
73de86a3
LC		 3281 if (WARN_ON(iftype >= NUM_NL80211_IFTYPES))
3282 return -EINVAL;
3283
3284 /* Always allow software iftypes */
3285 if (local->hw.wiphy->software_iftypes & BIT(iftype)) {
3286 if (radar_detect)
3287 return -EINVAL;
3288 return 0;
3289 }
3290
3291 memset(num, 0, sizeof(num));
3292
3293 if (iftype != NL80211_IFTYPE_UNSPECIFIED)
3294 num[iftype] = 1;
3295
3296 list_for_each_entry(ctx, &local->chanctx_list, list) {
5bcae31d
MK		 3297 if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED)
3298 continue;
71e6195e 3299 radar_detect |= ieee80211_chanctx_radar_detect(local, ctx);
73de86a3
LC		 3300 if (ctx->mode == IEEE80211_CHANCTX_EXCLUSIVE) {
3301 num_different_channels++;
3302 continue;
3303 }
b6a55015 3304 if (chandef && chanmode == IEEE80211_CHANCTX_SHARED &&
73de86a3
LC		 3305 cfg80211_chandef_compatible(chandef,
3306 &ctx->conf.def))
3307 continue;
3308 num_different_channels++;
3309 }
3310
3311 list_for_each_entry_rcu(sdata_iter, &local->interfaces, list) {
3312 struct wireless_dev *wdev_iter;
3313
3314 wdev_iter = &sdata_iter->wdev;
3315
3316 if (sdata_iter == sdata ||
0f611d28 3317 !ieee80211_sdata_running(sdata_iter) ||
73de86a3
LC		 3318 local->hw.wiphy->software_iftypes & BIT(wdev_iter->iftype))
3319 continue;
3320
3321 num[wdev_iter->iftype]++;
3322 total++;
3323 }
3324
3325 if (total == 1 && !radar_detect)
3326 return 0;
3327
3328 return cfg80211_check_combinations(local->hw.wiphy,
3329 num_different_channels,
3330 radar_detect, num);
3331}
6fa001bc
MK		 3332
3333static void
3334ieee80211_iter_max_chans(const struct ieee80211_iface_combination *c,
3335 void *data)
3336{
3337 u32 *max_num_different_channels = data;
3338
3339 *max_num_different_channels = max(*max_num_different_channels,
3340 c->num_different_channels);
3341}
3342
3343int ieee80211_max_num_channels(struct ieee80211_local *local)
3344{
3345 struct ieee80211_sub_if_data *sdata;
3346 int num[NUM_NL80211_IFTYPES] = {};
3347 struct ieee80211_chanctx *ctx;
3348 int num_different_channels = 0;
3349 u8 radar_detect = 0;
3350 u32 max_num_different_channels = 1;
3351 int err;
3352
3353 lockdep_assert_held(&local->chanctx_mtx);
3354
3355 list_for_each_entry(ctx, &local->chanctx_list, list) {
5bcae31d
MK		 3356 if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED)
3357 continue;
3358
6fa001bc
MK		 3359 num_different_channels++;
3360
71e6195e 3361 radar_detect |= ieee80211_chanctx_radar_detect(local, ctx);
6fa001bc
MK		 3362 }
3363
3364 list_for_each_entry_rcu(sdata, &local->interfaces, list)
3365 num[sdata->wdev.iftype]++;
3366
3367 err = cfg80211_iter_combinations(local->hw.wiphy,
3368 num_different_channels, radar_detect,
3369 num, ieee80211_iter_max_chans,
3370 &max_num_different_channels);
3371 if (err < 0)
3372 return err;
3373
3374 return max_num_different_channels;
3375}
40b861a0
AN		 3376
3377u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo)
3378{
3379 *buf++ = WLAN_EID_VENDOR_SPECIFIC;
3380 *buf++ = 7; /* len */
3381 *buf++ = 0x00; /* Microsoft OUI 00:50:F2 */
3382 *buf++ = 0x50;
3383 *buf++ = 0xf2;
3384 *buf++ = 2; /* WME */
3385 *buf++ = 0; /* WME info */
3386 *buf++ = 1; /* WME ver */
3387 *buf++ = qosinfo; /* U-APSD no in use */
3388
3389 return buf;
3390}
ba8c3d6f 3391
f2ac7e30
MK		 3392void ieee80211_txq_get_depth(struct ieee80211_txq *txq,
3393 unsigned long *frame_cnt,
3394 unsigned long *byte_cnt)
3395{
3396 struct txq_info *txqi = to_txq_info(txq);
3397
3398 if (frame_cnt)
fa962b92 3399 *frame_cnt = txqi->tin.backlog_packets;
f2ac7e30
MK		 3400
3401 if (byte_cnt)
fa962b92 3402 *byte_cnt = txqi->tin.backlog_bytes;
f2ac7e30
MK		 3403}
3404EXPORT_SYMBOL(ieee80211_txq_get_depth);
Linux kernel - Deliverables
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