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cfg80211: refactor the various CQM event sending code
[deliverable/linux.git] / net / mac80211 / mlme.c
CommitLineData
f0706e82
JB		 1/*
2 * BSS client mode implementation
5394af4d 3 * Copyright 2003-2008, Jouni Malinen <j@w1.fi>
f0706e82
JB		 4 * Copyright 2004, Instant802 Networks, Inc.
5 * Copyright 2005, Devicescape Software, Inc.
6 * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
7 * Copyright 2007, Michael Wu <flamingice@sourmilk.net>
d98ad83e 8 * Copyright 2013-2014 Intel Mobile Communications GmbH
f0706e82
JB		 9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation.
13 */
14
5b323edb 15#include <linux/delay.h>
f0706e82
JB		 16#include <linux/if_ether.h>
17#include <linux/skbuff.h>
f0706e82 18#include <linux/if_arp.h>
f0706e82 19#include <linux/etherdevice.h>
d9b93842 20#include <linux/moduleparam.h>
d0709a65 21#include <linux/rtnetlink.h>
e8db0be1 22#include <linux/pm_qos.h>
d91f36db 23#include <linux/crc32.h>
5a0e3ad6 24#include <linux/slab.h>
bc3b2d7f 25#include <linux/export.h>
f0706e82 26#include <net/mac80211.h>
472dbc45 27#include <asm/unaligned.h>
60f8b39c 28
f0706e82 29#include "ieee80211_i.h"
24487981 30#include "driver-ops.h"
2c8dccc7
JB		 31#include "rate.h"
32#include "led.h"
f0706e82 33
1672c0e3 34#define IEEE80211_AUTH_TIMEOUT (HZ / 5)
cb236d2d 35#define IEEE80211_AUTH_TIMEOUT_LONG (HZ / 2)
1672c0e3
JB		 36#define IEEE80211_AUTH_TIMEOUT_SHORT (HZ / 10)
37#define IEEE80211_AUTH_MAX_TRIES 3
38#define IEEE80211_AUTH_WAIT_ASSOC (HZ * 5)
39#define IEEE80211_ASSOC_TIMEOUT (HZ / 5)
cb236d2d 40#define IEEE80211_ASSOC_TIMEOUT_LONG (HZ / 2)
1672c0e3
JB		 41#define IEEE80211_ASSOC_TIMEOUT_SHORT (HZ / 10)
42#define IEEE80211_ASSOC_MAX_TRIES 3
66e67e41 43
180205bd
BG		 44static int max_nullfunc_tries = 2;
45module_param(max_nullfunc_tries, int, 0644);
46MODULE_PARM_DESC(max_nullfunc_tries,
47 "Maximum nullfunc tx tries before disconnecting (reason 4).");
48
49static int max_probe_tries = 5;
50module_param(max_probe_tries, int, 0644);
51MODULE_PARM_DESC(max_probe_tries,
52 "Maximum probe tries before disconnecting (reason 4).");
b291ba11
JB		 53
54/*
7ccc8bd7
FF		 55 * Beacon loss timeout is calculated as N frames times the
56 * advertised beacon interval. This may need to be somewhat
57 * higher than what hardware might detect to account for
58 * delays in the host processing frames. But since we also
59 * probe on beacon miss before declaring the connection lost
60 * default to what we want.
b291ba11 61 */
59c1ec2b
BG		 62static int beacon_loss_count = 7;
63module_param(beacon_loss_count, int, 0644);
64MODULE_PARM_DESC(beacon_loss_count,
65 "Number of beacon intervals before we decide beacon was lost.");
7ccc8bd7 66
b291ba11
JB		 67/*
68 * Time the connection can be idle before we probe
69 * it to see if we can still talk to the AP.
70 */
d1c5091f 71#define IEEE80211_CONNECTION_IDLE_TIME (30 * HZ)
b291ba11
JB		 72/*
73 * Time we wait for a probe response after sending
74 * a probe request because of beacon loss or for
75 * checking the connection still works.
76 */
180205bd
BG		 77static int probe_wait_ms = 500;
78module_param(probe_wait_ms, int, 0644);
79MODULE_PARM_DESC(probe_wait_ms,
80 "Maximum time(ms) to wait for probe response"
81 " before disconnecting (reason 4).");
f0706e82 82
17e4ec14
JM		 83/*
84 * Weight given to the latest Beacon frame when calculating average signal
85 * strength for Beacon frames received in the current BSS. This must be
86 * between 1 and 15.
87 */
88#define IEEE80211_SIGNAL_AVE_WEIGHT 3
89
391a200a
JM		 90/*
91 * How many Beacon frames need to have been used in average signal strength
92 * before starting to indicate signal change events.
93 */
94#define IEEE80211_SIGNAL_AVE_MIN_COUNT 4
95
ca386f31
JB		 96/*
97 * We can have multiple work items (and connection probing)
98 * scheduling this timer, but we need to take care to only
99 * reschedule it when it should fire _earlier_ than it was
100 * asked for before, or if it's not pending right now. This
101 * function ensures that. Note that it then is required to
102 * run this function for all timeouts after the first one
103 * has happened -- the work that runs from this timer will
104 * do that.
105 */
8d61ffa5
JB		 106static void run_again(struct ieee80211_sub_if_data *sdata,
107 unsigned long timeout)
ca386f31 108{
8d61ffa5 109 sdata_assert_lock(sdata);
ca386f31 110
8d61ffa5
JB		 111 if (!timer_pending(&sdata->u.mgd.timer) ||
112 time_before(timeout, sdata->u.mgd.timer.expires))
113 mod_timer(&sdata->u.mgd.timer, timeout);
ca386f31
JB		 114}
115
d3a910a8 116void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata)
b291ba11 117{
c1288b12 118 if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER)
b291ba11
JB		 119 return;
120
7eeff74c
JB		 121 if (sdata->local->hw.flags & IEEE80211_HW_CONNECTION_MONITOR)
122 return;
123
b291ba11 124 mod_timer(&sdata->u.mgd.bcn_mon_timer,
7ccc8bd7 125 round_jiffies_up(jiffies + sdata->u.mgd.beacon_timeout));
b291ba11
JB		 126}
127
be099e82
LR		 128void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata)
129{
0c699c3a
LR		 130 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
131
8628172f
SG		 132 if (unlikely(!sdata->u.mgd.associated))
133 return;
134
448cd2e2
EP		 135 ifmgd->probe_send_count = 0;
136
be099e82
LR		 137 if (sdata->local->hw.flags & IEEE80211_HW_CONNECTION_MONITOR)
138 return;
139
140 mod_timer(&sdata->u.mgd.conn_mon_timer,
141 round_jiffies_up(jiffies + IEEE80211_CONNECTION_IDLE_TIME));
142}
143
5484e237 144static int ecw2cw(int ecw)
60f8b39c 145{
5484e237 146 return (1 << ecw) - 1;
60f8b39c
JB		 147}
148
6565ec9b
JB		 149static u32
150ieee80211_determine_chantype(struct ieee80211_sub_if_data *sdata,
151 struct ieee80211_supported_band *sband,
152 struct ieee80211_channel *channel,
53b954ee 153 const struct ieee80211_ht_cap *ht_cap,
6565ec9b
JB		 154 const struct ieee80211_ht_operation *ht_oper,
155 const struct ieee80211_vht_operation *vht_oper,
5cdaed1e 156 struct cfg80211_chan_def *chandef, bool tracking)
6565ec9b 157{
5cdaed1e 158 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
6565ec9b
JB		 159 struct cfg80211_chan_def vht_chandef;
160 u32 ht_cfreq, ret;
161
162 chandef->chan = channel;
163 chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
164 chandef->center_freq1 = channel->center_freq;
165 chandef->center_freq2 = 0;
166
53b954ee 167 if (!ht_cap || !ht_oper || !sband->ht_cap.ht_supported) {
6565ec9b
JB		 168 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
169 goto out;
170 }
171
172 chandef->width = NL80211_CHAN_WIDTH_20;
173
53b954ee
EP		 174 if (!(ht_cap->cap_info &
175 cpu_to_le16(IEEE80211_HT_CAP_SUP_WIDTH_20_40))) {
f3000e1b 176 ret = IEEE80211_STA_DISABLE_40MHZ;
53b954ee
EP		 177 goto out;
178 }
179
6565ec9b
JB		 180 ht_cfreq = ieee80211_channel_to_frequency(ht_oper->primary_chan,
181 channel->band);
182 /* check that channel matches the right operating channel */
5cdaed1e 183 if (!tracking && channel->center_freq != ht_cfreq) {
6565ec9b
JB		 184 /*
185 * It's possible that some APs are confused here;
186 * Netgear WNDR3700 sometimes reports 4 higher than
187 * the actual channel in association responses, but
188 * since we look at probe response/beacon data here
189 * it should be OK.
190 */
5cdaed1e
JB		 191 sdata_info(sdata,
192 "Wrong control channel: center-freq: %d ht-cfreq: %d ht->primary_chan: %d band: %d - Disabling HT\n",
193 channel->center_freq, ht_cfreq,
194 ht_oper->primary_chan, channel->band);
6565ec9b
JB		 195 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
196 goto out;
197 }
198
199 /* check 40 MHz support, if we have it */
200 if (sband->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40) {
201 switch (ht_oper->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) {
202 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
203 chandef->width = NL80211_CHAN_WIDTH_40;
204 chandef->center_freq1 += 10;
205 break;
206 case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
207 chandef->width = NL80211_CHAN_WIDTH_40;
208 chandef->center_freq1 -= 10;
209 break;
210 }
211 } else {
212 /* 40 MHz (and 80 MHz) must be supported for VHT */
213 ret = IEEE80211_STA_DISABLE_VHT;
85220d71
JB		 214 /* also mark 40 MHz disabled */
215 ret |= IEEE80211_STA_DISABLE_40MHZ;
6565ec9b
JB		 216 goto out;
217 }
218
219 if (!vht_oper || !sband->vht_cap.vht_supported) {
220 ret = IEEE80211_STA_DISABLE_VHT;
221 goto out;
222 }
223
224 vht_chandef.chan = channel;
225 vht_chandef.center_freq1 =
226 ieee80211_channel_to_frequency(vht_oper->center_freq_seg1_idx,
227 channel->band);
228 vht_chandef.center_freq2 = 0;
229
6565ec9b
JB		 230 switch (vht_oper->chan_width) {
231 case IEEE80211_VHT_CHANWIDTH_USE_HT:
232 vht_chandef.width = chandef->width;
cb664981 233 vht_chandef.center_freq1 = chandef->center_freq1;
6565ec9b
JB		 234 break;
235 case IEEE80211_VHT_CHANWIDTH_80MHZ:
236 vht_chandef.width = NL80211_CHAN_WIDTH_80;
237 break;
238 case IEEE80211_VHT_CHANWIDTH_160MHZ:
239 vht_chandef.width = NL80211_CHAN_WIDTH_160;
240 break;
241 case IEEE80211_VHT_CHANWIDTH_80P80MHZ:
242 vht_chandef.width = NL80211_CHAN_WIDTH_80P80;
6553bf04
JB		 243 vht_chandef.center_freq2 =
244 ieee80211_channel_to_frequency(
245 vht_oper->center_freq_seg2_idx,
246 channel->band);
6565ec9b
JB		 247 break;
248 default:
5cdaed1e 249 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
30eb1dc2
JB		 250 sdata_info(sdata,
251 "AP VHT operation IE has invalid channel width (%d), disable VHT\n",
252 vht_oper->chan_width);
6565ec9b
JB		 253 ret = IEEE80211_STA_DISABLE_VHT;
254 goto out;
255 }
256
257 if (!cfg80211_chandef_valid(&vht_chandef)) {
5cdaed1e 258 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
30eb1dc2
JB		 259 sdata_info(sdata,
260 "AP VHT information is invalid, disable VHT\n");
6565ec9b
JB		 261 ret = IEEE80211_STA_DISABLE_VHT;
262 goto out;
263 }
264
265 if (cfg80211_chandef_identical(chandef, &vht_chandef)) {
266 ret = 0;
267 goto out;
268 }
269
270 if (!cfg80211_chandef_compatible(chandef, &vht_chandef)) {
5cdaed1e 271 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
30eb1dc2
JB		 272 sdata_info(sdata,
273 "AP VHT information doesn't match HT, disable VHT\n");
6565ec9b
JB		 274 ret = IEEE80211_STA_DISABLE_VHT;
275 goto out;
276 }
277
278 *chandef = vht_chandef;
279
280 ret = 0;
281
282out:
963a1852
JB		 283 /*
284 * When tracking the current AP, don't do any further checks if the
285 * new chandef is identical to the one we're currently using for the
286 * connection. This keeps us from playing ping-pong with regulatory,
287 * without it the following can happen (for example):
288 * - connect to an AP with 80 MHz, world regdom allows 80 MHz
289 * - AP advertises regdom US
290 * - CRDA loads regdom US with 80 MHz prohibited (old database)
291 * - the code below detects an unsupported channel, downgrades, and
292 * we disconnect from the AP in the caller
293 * - disconnect causes CRDA to reload world regdomain and the game
294 * starts anew.
295 * (see https://bugzilla.kernel.org/show_bug.cgi?id=70881)
296 *
297 * It seems possible that there are still scenarios with CSA or real
298 * bandwidth changes where a this could happen, but those cases are
299 * less common and wouldn't completely prevent using the AP.
300 */
301 if (tracking &&
302 cfg80211_chandef_identical(chandef, &sdata->vif.bss_conf.chandef))
303 return ret;
304
586e01ed
JB		 305 /* don't print the message below for VHT mismatch if VHT is disabled */
306 if (ret & IEEE80211_STA_DISABLE_VHT)
307 vht_chandef = *chandef;
308
ddfe49b4
JB		 309 /*
310 * Ignore the DISABLED flag when we're already connected and only
311 * tracking the APs beacon for bandwidth changes - otherwise we
312 * might get disconnected here if we connect to an AP, update our
313 * regulatory information based on the AP's country IE and the
314 * information we have is wrong/outdated and disables the channel
315 * that we're actually using for the connection to the AP.
316 */
6565ec9b 317 while (!cfg80211_chandef_usable(sdata->local->hw.wiphy, chandef,
ddfe49b4
JB		 318 tracking ? 0 :
319 IEEE80211_CHAN_DISABLED)) {
6565ec9b
JB		 320 if (WARN_ON(chandef->width == NL80211_CHAN_WIDTH_20_NOHT)) {
321 ret = IEEE80211_STA_DISABLE_HT |
322 IEEE80211_STA_DISABLE_VHT;
b56e4b85 323 break;
6565ec9b
JB		 324 }
325
e6b7cde4 326 ret |= ieee80211_chandef_downgrade(chandef);
6565ec9b
JB		 327 }
328
5cdaed1e 329 if (chandef->width != vht_chandef.width && !tracking)
6565ec9b
JB		 330 sdata_info(sdata,
331 "capabilities/regulatory prevented using AP HT/VHT configuration, downgraded\n");
332
333 WARN_ON_ONCE(!cfg80211_chandef_valid(chandef));
334 return ret;
335}
336
30eb1dc2
JB		 337static int ieee80211_config_bw(struct ieee80211_sub_if_data *sdata,
338 struct sta_info *sta,
53b954ee 339 const struct ieee80211_ht_cap *ht_cap,
30eb1dc2
JB		 340 const struct ieee80211_ht_operation *ht_oper,
341 const struct ieee80211_vht_operation *vht_oper,
342 const u8 *bssid, u32 *changed)
d5522e03
JB		 343{
344 struct ieee80211_local *local = sdata->local;
30eb1dc2 345 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
d5522e03 346 struct ieee80211_supported_band *sband;
55de908a 347 struct ieee80211_channel *chan;
30eb1dc2 348 struct cfg80211_chan_def chandef;
9ed6bcce 349 u16 ht_opmode;
30eb1dc2
JB		 350 u32 flags;
351 enum ieee80211_sta_rx_bandwidth new_sta_bw;
352 int ret;
d5522e03 353
30eb1dc2
JB		 354 /* if HT was/is disabled, don't track any bandwidth changes */
355 if (ifmgd->flags & IEEE80211_STA_DISABLE_HT || !ht_oper)
1128958d
JB		 356 return 0;
357
30eb1dc2
JB		 358 /* don't check VHT if we associated as non-VHT station */
359 if (ifmgd->flags & IEEE80211_STA_DISABLE_VHT)
360 vht_oper = NULL;
361
362 if (WARN_ON_ONCE(!sta))
363 return -EINVAL;
364
017b45bb
AA		 365 /*
366 * if bss configuration changed store the new one -
367 * this may be applicable even if channel is identical
368 */
369 ht_opmode = le16_to_cpu(ht_oper->operation_mode);
370 if (sdata->vif.bss_conf.ht_operation_mode != ht_opmode) {
371 *changed |= BSS_CHANGED_HT;
372 sdata->vif.bss_conf.ht_operation_mode = ht_opmode;
373 }
374
f2d9330e 375 chan = sdata->vif.bss_conf.chandef.chan;
55de908a 376 sband = local->hw.wiphy->bands[chan->band];
d5522e03 377
30eb1dc2 378 /* calculate new channel (type) based on HT/VHT operation IEs */
53b954ee
EP		 379 flags = ieee80211_determine_chantype(sdata, sband, chan,
380 ht_cap, ht_oper, vht_oper,
381 &chandef, true);
30eb1dc2
JB		 382
383 /*
384 * Downgrade the new channel if we associated with restricted
385 * capabilities. For example, if we associated as a 20 MHz STA
386 * to a 40 MHz AP (due to regulatory, capabilities or config
387 * reasons) then switching to a 40 MHz channel now won't do us
388 * any good -- we couldn't use it with the AP.
389 */
390 if (ifmgd->flags & IEEE80211_STA_DISABLE_80P80MHZ &&
391 chandef.width == NL80211_CHAN_WIDTH_80P80)
e6b7cde4 392 flags |= ieee80211_chandef_downgrade(&chandef);
30eb1dc2
JB		 393 if (ifmgd->flags & IEEE80211_STA_DISABLE_160MHZ &&
394 chandef.width == NL80211_CHAN_WIDTH_160)
e6b7cde4 395 flags |= ieee80211_chandef_downgrade(&chandef);
30eb1dc2
JB		 396 if (ifmgd->flags & IEEE80211_STA_DISABLE_40MHZ &&
397 chandef.width > NL80211_CHAN_WIDTH_20)
e6b7cde4 398 flags |= ieee80211_chandef_downgrade(&chandef);
30eb1dc2
JB		 399
400 if (cfg80211_chandef_identical(&chandef, &sdata->vif.bss_conf.chandef))
401 return 0;
402
403 sdata_info(sdata,
404 "AP %pM changed bandwidth, new config is %d MHz, width %d (%d/%d MHz)\n",
405 ifmgd->bssid, chandef.chan->center_freq, chandef.width,
406 chandef.center_freq1, chandef.center_freq2);
407
408 if (flags != (ifmgd->flags & (IEEE80211_STA_DISABLE_HT |
409 IEEE80211_STA_DISABLE_VHT |
410 IEEE80211_STA_DISABLE_40MHZ |
411 IEEE80211_STA_DISABLE_80P80MHZ |
412 IEEE80211_STA_DISABLE_160MHZ)) ||
413 !cfg80211_chandef_valid(&chandef)) {
414 sdata_info(sdata,
415 "AP %pM changed bandwidth in a way we can't support - disconnect\n",
416 ifmgd->bssid);
417 return -EINVAL;
418 }
419
420 switch (chandef.width) {
421 case NL80211_CHAN_WIDTH_20_NOHT:
422 case NL80211_CHAN_WIDTH_20:
423 new_sta_bw = IEEE80211_STA_RX_BW_20;
424 break;
4bf88530 425 case NL80211_CHAN_WIDTH_40:
30eb1dc2 426 new_sta_bw = IEEE80211_STA_RX_BW_40;
64f68e5d 427 break;
30eb1dc2
JB		 428 case NL80211_CHAN_WIDTH_80:
429 new_sta_bw = IEEE80211_STA_RX_BW_80;
430 break;
431 case NL80211_CHAN_WIDTH_80P80:
432 case NL80211_CHAN_WIDTH_160:
433 new_sta_bw = IEEE80211_STA_RX_BW_160;
64f68e5d 434 break;
30eb1dc2
JB		 435 default:
436 return -EINVAL;
64f68e5d 437 }
d5522e03 438
30eb1dc2
JB		 439 if (new_sta_bw > sta->cur_max_bandwidth)
440 new_sta_bw = sta->cur_max_bandwidth;
64f68e5d 441
30eb1dc2
JB		 442 if (new_sta_bw < sta->sta.bandwidth) {
443 sta->sta.bandwidth = new_sta_bw;
444 rate_control_rate_update(local, sband, sta,
445 IEEE80211_RC_BW_CHANGED);
446 }
64f68e5d 447
30eb1dc2
JB		 448 ret = ieee80211_vif_change_bandwidth(sdata, &chandef, changed);
449 if (ret) {
450 sdata_info(sdata,
451 "AP %pM changed bandwidth to incompatible one - disconnect\n",
452 ifmgd->bssid);
453 return ret;
454 }
7cc44ed4 455
30eb1dc2
JB		 456 if (new_sta_bw > sta->sta.bandwidth) {
457 sta->sta.bandwidth = new_sta_bw;
458 rate_control_rate_update(local, sband, sta,
459 IEEE80211_RC_BW_CHANGED);
0aaffa9b 460 }
d5522e03 461
30eb1dc2 462 return 0;
d5522e03
JB		 463}
464
9c6bd790
JB		 465/* frame sending functions */
466
66e67e41 467static void ieee80211_add_ht_ie(struct ieee80211_sub_if_data *sdata,
9dde6423 468 struct sk_buff *skb, u8 ap_ht_param,
66e67e41
JB		 469 struct ieee80211_supported_band *sband,
470 struct ieee80211_channel *channel,
471 enum ieee80211_smps_mode smps)
472{
66e67e41
JB		 473 u8 *pos;
474 u32 flags = channel->flags;
475 u16 cap;
476 struct ieee80211_sta_ht_cap ht_cap;
477
478 BUILD_BUG_ON(sizeof(ht_cap) != sizeof(sband->ht_cap));
479
66e67e41
JB		 480 memcpy(&ht_cap, &sband->ht_cap, sizeof(ht_cap));
481 ieee80211_apply_htcap_overrides(sdata, &ht_cap);
482
66e67e41
JB		 483 /* determine capability flags */
484 cap = ht_cap.cap;
485
9dde6423 486 switch (ap_ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) {
66e67e41
JB		 487 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
488 if (flags & IEEE80211_CHAN_NO_HT40PLUS) {
489 cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
490 cap &= ~IEEE80211_HT_CAP_SGI_40;
491 }
492 break;
493 case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
494 if (flags & IEEE80211_CHAN_NO_HT40MINUS) {
495 cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
496 cap &= ~IEEE80211_HT_CAP_SGI_40;
497 }
498 break;
499 }
500
24398e39
JB		 501 /*
502 * If 40 MHz was disabled associate as though we weren't
503 * capable of 40 MHz -- some broken APs will never fall
504 * back to trying to transmit in 20 MHz.
505 */
506 if (sdata->u.mgd.flags & IEEE80211_STA_DISABLE_40MHZ) {
507 cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
508 cap &= ~IEEE80211_HT_CAP_SGI_40;
509 }
510
66e67e41
JB		 511 /* set SM PS mode properly */
512 cap &= ~IEEE80211_HT_CAP_SM_PS;
513 switch (smps) {
514 case IEEE80211_SMPS_AUTOMATIC:
515 case IEEE80211_SMPS_NUM_MODES:
516 WARN_ON(1);
517 case IEEE80211_SMPS_OFF:
518 cap |= WLAN_HT_CAP_SM_PS_DISABLED <<
519 IEEE80211_HT_CAP_SM_PS_SHIFT;
520 break;
521 case IEEE80211_SMPS_STATIC:
522 cap |= WLAN_HT_CAP_SM_PS_STATIC <<
523 IEEE80211_HT_CAP_SM_PS_SHIFT;
524 break;
525 case IEEE80211_SMPS_DYNAMIC:
526 cap |= WLAN_HT_CAP_SM_PS_DYNAMIC <<
527 IEEE80211_HT_CAP_SM_PS_SHIFT;
528 break;
529 }
530
531 /* reserve and fill IE */
532 pos = skb_put(skb, sizeof(struct ieee80211_ht_cap) + 2);
533 ieee80211_ie_build_ht_cap(pos, &ht_cap, cap);
534}
535
d545daba
MP		 536static void ieee80211_add_vht_ie(struct ieee80211_sub_if_data *sdata,
537 struct sk_buff *skb,
b08fbbd8
JB		 538 struct ieee80211_supported_band *sband,
539 struct ieee80211_vht_cap *ap_vht_cap)
d545daba
MP		 540{
541 u8 *pos;
542 u32 cap;
543 struct ieee80211_sta_vht_cap vht_cap;
c1cf6d4e 544 u32 mask, ap_bf_sts, our_bf_sts;
d545daba
MP		 545
546 BUILD_BUG_ON(sizeof(vht_cap) != sizeof(sband->vht_cap));
547
548 memcpy(&vht_cap, &sband->vht_cap, sizeof(vht_cap));
dd5ecfea 549 ieee80211_apply_vhtcap_overrides(sdata, &vht_cap);
d545daba
MP		 550
551 /* determine capability flags */
552 cap = vht_cap.cap;
553
f2d9d270 554 if (sdata->u.mgd.flags & IEEE80211_STA_DISABLE_80P80MHZ) {
575f0530
JB		 555 u32 bw = cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK;
556
557 cap &= ~IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK;
558 if (bw == IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ ||
559 bw == IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ)
560 cap |= IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ;
f2d9d270
JB		 561 }
562
563 if (sdata->u.mgd.flags & IEEE80211_STA_DISABLE_160MHZ) {
564 cap &= ~IEEE80211_VHT_CAP_SHORT_GI_160;
575f0530 565 cap &= ~IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK;
f2d9d270
JB		 566 }
567
b08fbbd8
JB		 568 /*
569 * Some APs apparently get confused if our capabilities are better
570 * than theirs, so restrict what we advertise in the assoc request.
571 */
572 if (!(ap_vht_cap->vht_cap_info &
573 cpu_to_le32(IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE)))
574 cap &= ~IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE;
575
c1cf6d4e
ES		 576 mask = IEEE80211_VHT_CAP_BEAMFORMEE_STS_MASK;
577
578 ap_bf_sts = le32_to_cpu(ap_vht_cap->vht_cap_info) & mask;
579 our_bf_sts = cap & mask;
580
581 if (ap_bf_sts < our_bf_sts) {
582 cap &= ~mask;
583 cap |= ap_bf_sts;
584 }
585
d545daba 586 /* reserve and fill IE */
d4950281 587 pos = skb_put(skb, sizeof(struct ieee80211_vht_cap) + 2);
d545daba
MP		 588 ieee80211_ie_build_vht_cap(pos, &vht_cap, cap);
589}
590
66e67e41
JB		 591static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata)
592{
593 struct ieee80211_local *local = sdata->local;
594 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
595 struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data;
596 struct sk_buff *skb;
597 struct ieee80211_mgmt *mgmt;
598 u8 *pos, qos_info;
599 size_t offset = 0, noffset;
2103dec1 600 int i, count, rates_len, supp_rates_len, shift;
66e67e41
JB		 601 u16 capab;
602 struct ieee80211_supported_band *sband;
55de908a
JB		 603 struct ieee80211_chanctx_conf *chanctx_conf;
604 struct ieee80211_channel *chan;
2103dec1 605 u32 rate_flags, rates = 0;
66e67e41 606
8d61ffa5 607 sdata_assert_lock(sdata);
66e67e41 608
55de908a
JB		 609 rcu_read_lock();
610 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
611 if (WARN_ON(!chanctx_conf)) {
612 rcu_read_unlock();
613 return;
614 }
4bf88530 615 chan = chanctx_conf->def.chan;
2103dec1 616 rate_flags = ieee80211_chandef_rate_flags(&chanctx_conf->def);
55de908a
JB		 617 rcu_read_unlock();
618 sband = local->hw.wiphy->bands[chan->band];
2103dec1 619 shift = ieee80211_vif_get_shift(&sdata->vif);
66e67e41
JB		 620
621 if (assoc_data->supp_rates_len) {
622 /*
623 * Get all rates supported by the device and the AP as
624 * some APs don't like getting a superset of their rates
625 * in the association request (e.g. D-Link DAP 1353 in
626 * b-only mode)...
627 */
2103dec1
SW		 628 rates_len = ieee80211_parse_bitrates(&chanctx_conf->def, sband,
629 assoc_data->supp_rates,
630 assoc_data->supp_rates_len,
631 &rates);
66e67e41
JB		 632 } else {
633 /*
634 * In case AP not provide any supported rates information
635 * before association, we send information element(s) with
636 * all rates that we support.
637 */
2103dec1
SW		 638 rates_len = 0;
639 for (i = 0; i < sband->n_bitrates; i++) {
640 if ((rate_flags & sband->bitrates[i].flags)
641 != rate_flags)
642 continue;
643 rates |= BIT(i);
644 rates_len++;
645 }
66e67e41
JB		 646 }
647
648 skb = alloc_skb(local->hw.extra_tx_headroom +
649 sizeof(*mgmt) + /* bit too much but doesn't matter */
650 2 + assoc_data->ssid_len + /* SSID */
651 4 + rates_len + /* (extended) rates */
652 4 + /* power capability */
653 2 + 2 * sband->n_channels + /* supported channels */
654 2 + sizeof(struct ieee80211_ht_cap) + /* HT */
d4950281 655 2 + sizeof(struct ieee80211_vht_cap) + /* VHT */
66e67e41
JB		 656 assoc_data->ie_len + /* extra IEs */
657 9, /* WMM */
658 GFP_KERNEL);
659 if (!skb)
660 return;
661
662 skb_reserve(skb, local->hw.extra_tx_headroom);
663
664 capab = WLAN_CAPABILITY_ESS;
665
666 if (sband->band == IEEE80211_BAND_2GHZ) {
667 if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE))
668 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
669 if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE))
670 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
671 }
672
673 if (assoc_data->capability & WLAN_CAPABILITY_PRIVACY)
674 capab |= WLAN_CAPABILITY_PRIVACY;
675
676 if ((assoc_data->capability & WLAN_CAPABILITY_SPECTRUM_MGMT) &&
677 (local->hw.flags & IEEE80211_HW_SPECTRUM_MGMT))
678 capab |= WLAN_CAPABILITY_SPECTRUM_MGMT;
679
cd2f5dd7
AK		 680 if (ifmgd->flags & IEEE80211_STA_ENABLE_RRM)
681 capab |= WLAN_CAPABILITY_RADIO_MEASURE;
682
66e67e41
JB		 683 mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
684 memset(mgmt, 0, 24);
685 memcpy(mgmt->da, assoc_data->bss->bssid, ETH_ALEN);
686 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
687 memcpy(mgmt->bssid, assoc_data->bss->bssid, ETH_ALEN);
688
689 if (!is_zero_ether_addr(assoc_data->prev_bssid)) {
690 skb_put(skb, 10);
691 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
692 IEEE80211_STYPE_REASSOC_REQ);
693 mgmt->u.reassoc_req.capab_info = cpu_to_le16(capab);
694 mgmt->u.reassoc_req.listen_interval =
695 cpu_to_le16(local->hw.conf.listen_interval);
696 memcpy(mgmt->u.reassoc_req.current_ap, assoc_data->prev_bssid,
697 ETH_ALEN);
698 } else {
699 skb_put(skb, 4);
700 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
701 IEEE80211_STYPE_ASSOC_REQ);
702 mgmt->u.assoc_req.capab_info = cpu_to_le16(capab);
703 mgmt->u.assoc_req.listen_interval =
704 cpu_to_le16(local->hw.conf.listen_interval);
705 }
706
707 /* SSID */
708 pos = skb_put(skb, 2 + assoc_data->ssid_len);
709 *pos++ = WLAN_EID_SSID;
710 *pos++ = assoc_data->ssid_len;
711 memcpy(pos, assoc_data->ssid, assoc_data->ssid_len);
712
713 /* add all rates which were marked to be used above */
714 supp_rates_len = rates_len;
715 if (supp_rates_len > 8)
716 supp_rates_len = 8;
717
718 pos = skb_put(skb, supp_rates_len + 2);
719 *pos++ = WLAN_EID_SUPP_RATES;
720 *pos++ = supp_rates_len;
721
722 count = 0;
723 for (i = 0; i < sband->n_bitrates; i++) {
724 if (BIT(i) & rates) {
2103dec1
SW		 725 int rate = DIV_ROUND_UP(sband->bitrates[i].bitrate,
726 5 * (1 << shift));
727 *pos++ = (u8) rate;
66e67e41
JB		 728 if (++count == 8)
729 break;
730 }
731 }
732
733 if (rates_len > count) {
734 pos = skb_put(skb, rates_len - count + 2);
735 *pos++ = WLAN_EID_EXT_SUPP_RATES;
736 *pos++ = rates_len - count;
737
738 for (i++; i < sband->n_bitrates; i++) {
739 if (BIT(i) & rates) {
2103dec1
SW		 740 int rate;
741 rate = DIV_ROUND_UP(sband->bitrates[i].bitrate,
742 5 * (1 << shift));
743 *pos++ = (u8) rate;
66e67e41
JB		 744 }
745 }
746 }
747
cd2f5dd7
AK		 748 if (capab & WLAN_CAPABILITY_SPECTRUM_MGMT ||
749 capab & WLAN_CAPABILITY_RADIO_MEASURE) {
66e67e41
JB		 750 pos = skb_put(skb, 4);
751 *pos++ = WLAN_EID_PWR_CAPABILITY;
752 *pos++ = 2;
753 *pos++ = 0; /* min tx power */
0430c883
SW		 754 /* max tx power */
755 *pos++ = ieee80211_chandef_max_power(&chanctx_conf->def);
cd2f5dd7 756 }
66e67e41 757
cd2f5dd7 758 if (capab & WLAN_CAPABILITY_SPECTRUM_MGMT) {
66e67e41
JB		 759 /* TODO: get this in reg domain format */
760 pos = skb_put(skb, 2 * sband->n_channels + 2);
761 *pos++ = WLAN_EID_SUPPORTED_CHANNELS;
762 *pos++ = 2 * sband->n_channels;
763 for (i = 0; i < sband->n_channels; i++) {
764 *pos++ = ieee80211_frequency_to_channel(
765 sband->channels[i].center_freq);
766 *pos++ = 1; /* one channel in the subband*/
767 }
768 }
769
770 /* if present, add any custom IEs that go before HT */
b3f51e94 771 if (assoc_data->ie_len) {
66e67e41
JB		 772 static const u8 before_ht[] = {
773 WLAN_EID_SSID,
774 WLAN_EID_SUPP_RATES,
775 WLAN_EID_EXT_SUPP_RATES,
776 WLAN_EID_PWR_CAPABILITY,
777 WLAN_EID_SUPPORTED_CHANNELS,
778 WLAN_EID_RSN,
779 WLAN_EID_QOS_CAPA,
780 WLAN_EID_RRM_ENABLED_CAPABILITIES,
781 WLAN_EID_MOBILITY_DOMAIN,
8ed28747
JB		 782 WLAN_EID_FAST_BSS_TRANSITION, /* reassoc only */
783 WLAN_EID_RIC_DATA, /* reassoc only */
66e67e41
JB		 784 WLAN_EID_SUPPORTED_REGULATORY_CLASSES,
785 };
8ed28747
JB		 786 static const u8 after_ric[] = {
787 WLAN_EID_SUPPORTED_REGULATORY_CLASSES,
788 WLAN_EID_HT_CAPABILITY,
789 WLAN_EID_BSS_COEX_2040,
790 WLAN_EID_EXT_CAPABILITY,
791 WLAN_EID_QOS_TRAFFIC_CAPA,
792 WLAN_EID_TIM_BCAST_REQ,
793 WLAN_EID_INTERWORKING,
794 /* 60GHz doesn't happen right now */
795 WLAN_EID_VHT_CAPABILITY,
796 WLAN_EID_OPMODE_NOTIF,
797 };
798
799 noffset = ieee80211_ie_split_ric(assoc_data->ie,
800 assoc_data->ie_len,
801 before_ht,
802 ARRAY_SIZE(before_ht),
803 after_ric,
804 ARRAY_SIZE(after_ric),
805 offset);
66e67e41
JB		 806 pos = skb_put(skb, noffset - offset);
807 memcpy(pos, assoc_data->ie + offset, noffset - offset);
808 offset = noffset;
809 }
810
f2d9d270
JB		 811 if (WARN_ON_ONCE((ifmgd->flags & IEEE80211_STA_DISABLE_HT) &&
812 !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)))
813 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
814
a8243b72 815 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT))
9dde6423 816 ieee80211_add_ht_ie(sdata, skb, assoc_data->ap_ht_param,
04ecd257 817 sband, chan, sdata->smps_mode);
66e67e41 818
3de3802c
JB		 819 /* if present, add any custom IEs that go before VHT */
820 if (assoc_data->ie_len) {
821 static const u8 before_vht[] = {
822 WLAN_EID_SSID,
823 WLAN_EID_SUPP_RATES,
824 WLAN_EID_EXT_SUPP_RATES,
825 WLAN_EID_PWR_CAPABILITY,
826 WLAN_EID_SUPPORTED_CHANNELS,
827 WLAN_EID_RSN,
828 WLAN_EID_QOS_CAPA,
829 WLAN_EID_RRM_ENABLED_CAPABILITIES,
830 WLAN_EID_MOBILITY_DOMAIN,
831 WLAN_EID_SUPPORTED_REGULATORY_CLASSES,
832 WLAN_EID_HT_CAPABILITY,
833 WLAN_EID_BSS_COEX_2040,
834 WLAN_EID_EXT_CAPABILITY,
835 WLAN_EID_QOS_TRAFFIC_CAPA,
836 WLAN_EID_TIM_BCAST_REQ,
837 WLAN_EID_INTERWORKING,
838 };
8ed28747
JB		 839
840 /* RIC already taken above, so no need to handle here anymore */
3de3802c
JB		 841 noffset = ieee80211_ie_split(assoc_data->ie, assoc_data->ie_len,
842 before_vht, ARRAY_SIZE(before_vht),
843 offset);
844 pos = skb_put(skb, noffset - offset);
845 memcpy(pos, assoc_data->ie + offset, noffset - offset);
846 offset = noffset;
847 }
848
d545daba 849 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
b08fbbd8
JB		 850 ieee80211_add_vht_ie(sdata, skb, sband,
851 &assoc_data->ap_vht_cap);
d545daba 852
66e67e41 853 /* if present, add any custom non-vendor IEs that go after HT */
b3f51e94 854 if (assoc_data->ie_len) {
66e67e41
JB		 855 noffset = ieee80211_ie_split_vendor(assoc_data->ie,
856 assoc_data->ie_len,
857 offset);
858 pos = skb_put(skb, noffset - offset);
859 memcpy(pos, assoc_data->ie + offset, noffset - offset);
860 offset = noffset;
861 }
862
76f0303d
JB		 863 if (assoc_data->wmm) {
864 if (assoc_data->uapsd) {
dc41e4d4
EP		 865 qos_info = ifmgd->uapsd_queues;
866 qos_info |= (ifmgd->uapsd_max_sp_len <<
66e67e41
JB		 867 IEEE80211_WMM_IE_STA_QOSINFO_SP_SHIFT);
868 } else {
869 qos_info = 0;
870 }
871
40b861a0 872 pos = ieee80211_add_wmm_info_ie(skb_put(skb, 9), qos_info);
66e67e41
JB		 873 }
874
875 /* add any remaining custom (i.e. vendor specific here) IEs */
b3f51e94 876 if (assoc_data->ie_len) {
66e67e41
JB		 877 noffset = assoc_data->ie_len;
878 pos = skb_put(skb, noffset - offset);
879 memcpy(pos, assoc_data->ie + offset, noffset - offset);
880 }
881
a1845fc7
JB		 882 drv_mgd_prepare_tx(local, sdata);
883
66e67e41 884 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
1672c0e3
JB		 885 if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)
886 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
887 IEEE80211_TX_INTFL_MLME_CONN_TX;
66e67e41
JB		 888 ieee80211_tx_skb(sdata, skb);
889}
890
572e0012
KV		 891void ieee80211_send_pspoll(struct ieee80211_local *local,
892 struct ieee80211_sub_if_data *sdata)
893{
572e0012
KV		 894 struct ieee80211_pspoll *pspoll;
895 struct sk_buff *skb;
572e0012 896
d8cd189e
KV		 897 skb = ieee80211_pspoll_get(&local->hw, &sdata->vif);
898 if (!skb)
572e0012 899 return;
572e0012 900
d8cd189e
KV		 901 pspoll = (struct ieee80211_pspoll *) skb->data;
902 pspoll->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
572e0012 903
62ae67be
JB		 904 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
905 ieee80211_tx_skb(sdata, skb);
572e0012
KV		 906}
907
965bedad
JB		 908void ieee80211_send_nullfunc(struct ieee80211_local *local,
909 struct ieee80211_sub_if_data *sdata,
910 int powersave)
911{
912 struct sk_buff *skb;
d8cd189e 913 struct ieee80211_hdr_3addr *nullfunc;
b6f35301 914 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
965bedad 915
d8cd189e
KV		 916 skb = ieee80211_nullfunc_get(&local->hw, &sdata->vif);
917 if (!skb)
965bedad 918 return;
965bedad 919
d8cd189e 920 nullfunc = (struct ieee80211_hdr_3addr *) skb->data;
965bedad 921 if (powersave)
d8cd189e 922 nullfunc->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
965bedad 923
6c17b77b
SF		 924 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT |
925 IEEE80211_TX_INTFL_OFFCHAN_TX_OK;
ff40b425
PF		 926
927 if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)
928 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS;
929
392b9ffb 930 if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL)
b6f35301
RM		 931 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_USE_MINRATE;
932
62ae67be 933 ieee80211_tx_skb(sdata, skb);
965bedad
JB		 934}
935
d524215f
FF		 936static void ieee80211_send_4addr_nullfunc(struct ieee80211_local *local,
937 struct ieee80211_sub_if_data *sdata)
938{
939 struct sk_buff *skb;
940 struct ieee80211_hdr *nullfunc;
941 __le16 fc;
942
943 if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
944 return;
945
946 skb = dev_alloc_skb(local->hw.extra_tx_headroom + 30);
d15b8459 947 if (!skb)
d524215f 948 return;
d15b8459 949
d524215f
FF		 950 skb_reserve(skb, local->hw.extra_tx_headroom);
951
952 nullfunc = (struct ieee80211_hdr *) skb_put(skb, 30);
953 memset(nullfunc, 0, 30);
954 fc = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC |
955 IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS);
956 nullfunc->frame_control = fc;
957 memcpy(nullfunc->addr1, sdata->u.mgd.bssid, ETH_ALEN);
958 memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
959 memcpy(nullfunc->addr3, sdata->u.mgd.bssid, ETH_ALEN);
960 memcpy(nullfunc->addr4, sdata->vif.addr, ETH_ALEN);
961
962 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
963 ieee80211_tx_skb(sdata, skb);
964}
965
cc32abd4
JB		 966/* spectrum management related things */
967static void ieee80211_chswitch_work(struct work_struct *work)
968{
969 struct ieee80211_sub_if_data *sdata =
970 container_of(work, struct ieee80211_sub_if_data, u.mgd.chswitch_work);
675a0b04 971 struct ieee80211_local *local = sdata->local;
cc32abd4 972 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
7578d575 973 int ret;
cc32abd4 974
9607e6b6 975 if (!ieee80211_sdata_running(sdata))
cc32abd4
JB		 976 return;
977
8d61ffa5 978 sdata_lock(sdata);
4c3ebc56
MK		 979 mutex_lock(&local->mtx);
980 mutex_lock(&local->chanctx_mtx);
981
77fdaa12
JB		 982 if (!ifmgd->associated)
983 goto out;
cc32abd4 984
4c3ebc56
MK		 985 if (!sdata->vif.csa_active)
986 goto out;
987
988 /*
989 * using reservation isn't immediate as it may be deferred until later
990 * with multi-vif. once reservation is complete it will re-schedule the
991 * work with no reserved_chanctx so verify chandef to check if it
992 * completed successfully
993 */
994
995 if (sdata->reserved_chanctx) {
996 /*
997 * with multi-vif csa driver may call ieee80211_csa_finish()
998 * many times while waiting for other interfaces to use their
999 * reservations
1000 */
1001 if (sdata->reserved_ready)
1002 goto out;
1003
1004 ret = ieee80211_vif_use_reserved_context(sdata);
1005 if (ret) {
1006 sdata_info(sdata,
1007 "failed to use reserved channel context, disconnecting (err=%d)\n",
1008 ret);
1009 ieee80211_queue_work(&sdata->local->hw,
1010 &ifmgd->csa_connection_drop_work);
1011 goto out;
1012 }
1013
1014 goto out;
1015 }
1016
1017 if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef,
1018 &sdata->csa_chandef)) {
7578d575 1019 sdata_info(sdata,
4c3ebc56 1020 "failed to finalize channel switch, disconnecting\n");
7578d575
AN		 1021 ieee80211_queue_work(&sdata->local->hw,
1022 &ifmgd->csa_connection_drop_work);
1023 goto out;
1024 }
675a0b04 1025
cc32abd4 1026 /* XXX: shouldn't really modify cfg80211-owned data! */
33787fc4 1027 ifmgd->associated->channel = sdata->csa_chandef.chan;
cc32abd4 1028
0c21e632
LC		 1029 ifmgd->csa_waiting_bcn = true;
1030
1031 ieee80211_sta_reset_beacon_monitor(sdata);
1032 ieee80211_sta_reset_conn_monitor(sdata);
1033
1034out:
1035 mutex_unlock(&local->chanctx_mtx);
1036 mutex_unlock(&local->mtx);
1037 sdata_unlock(sdata);
1038}
1039
1040static void ieee80211_chswitch_post_beacon(struct ieee80211_sub_if_data *sdata)
1041{
1042 struct ieee80211_local *local = sdata->local;
1043 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
1044 int ret;
1045
1046 sdata_assert_lock(sdata);
1047
1048 WARN_ON(!sdata->vif.csa_active);
4c3ebc56 1049
a46992b4
LC		 1050 if (sdata->csa_block_tx) {
1051 ieee80211_wake_vif_queues(local, sdata,
1052 IEEE80211_QUEUE_STOP_REASON_CSA);
1053 sdata->csa_block_tx = false;
1054 }
7578d575 1055
d04b5ac9
LC		 1056 cfg80211_ch_switch_notify(sdata->dev, &sdata->reserved_chandef);
1057
0c21e632
LC		 1058 sdata->vif.csa_active = false;
1059 ifmgd->csa_waiting_bcn = false;
1060
f1d65583
LC		 1061 ret = drv_post_channel_switch(sdata);
1062 if (ret) {
1063 sdata_info(sdata,
1064 "driver post channel switch failed, disconnecting\n");
1065 ieee80211_queue_work(&local->hw,
1066 &ifmgd->csa_connection_drop_work);
0c21e632 1067 return;
f1d65583 1068 }
cc32abd4
JB		 1069}
1070
5ce6e438
JB		 1071void ieee80211_chswitch_done(struct ieee80211_vif *vif, bool success)
1072{
55de908a
JB		 1073 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
1074 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
5ce6e438
JB		 1075
1076 trace_api_chswitch_done(sdata, success);
1077 if (!success) {
882a7c69
JB		 1078 sdata_info(sdata,
1079 "driver channel switch failed, disconnecting\n");
1080 ieee80211_queue_work(&sdata->local->hw,
1081 &ifmgd->csa_connection_drop_work);
1082 } else {
1083 ieee80211_queue_work(&sdata->local->hw, &ifmgd->chswitch_work);
5ce6e438 1084 }
5ce6e438
JB		 1085}
1086EXPORT_SYMBOL(ieee80211_chswitch_done);
1087
cc32abd4
JB		 1088static void ieee80211_chswitch_timer(unsigned long data)
1089{
1090 struct ieee80211_sub_if_data *sdata =
1091 (struct ieee80211_sub_if_data *) data;
5bb644a0 1092
9b7d72c1 1093 ieee80211_queue_work(&sdata->local->hw, &sdata->u.mgd.chswitch_work);
cc32abd4
JB		 1094}
1095
37799e52 1096static void
4a3cb702 1097ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
2ba45384
LC		 1098 u64 timestamp, u32 device_timestamp,
1099 struct ieee802_11_elems *elems,
04a161f4 1100 bool beacon)
cc32abd4 1101{
b4f286a1 1102 struct ieee80211_local *local = sdata->local;
cc32abd4 1103 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
37799e52 1104 struct cfg80211_bss *cbss = ifmgd->associated;
4c3ebc56 1105 struct ieee80211_chanctx_conf *conf;
55de908a 1106 struct ieee80211_chanctx *chanctx;
e6b7cde4 1107 enum ieee80211_band current_band;
c0f17eb9 1108 struct ieee80211_csa_ie csa_ie;
6d027bcc 1109 struct ieee80211_channel_switch ch_switch;
e6b7cde4 1110 int res;
cc32abd4 1111
8d61ffa5 1112 sdata_assert_lock(sdata);
77fdaa12 1113
37799e52 1114 if (!cbss)
cc32abd4
JB		 1115 return;
1116
b4f286a1 1117 if (local->scanning)
cc32abd4
JB		 1118 return;
1119
37799e52 1120 /* disregard subsequent announcements if we are already processing */
3e2a0226 1121 if (sdata->vif.csa_active)
cc32abd4
JB		 1122 return;
1123
e6b7cde4 1124 current_band = cbss->channel->band;
c0f17eb9 1125 memset(&csa_ie, 0, sizeof(csa_ie));
e6b7cde4
SW		 1126 res = ieee80211_parse_ch_switch_ie(sdata, elems, beacon, current_band,
1127 ifmgd->flags,
c0f17eb9 1128 ifmgd->associated->bssid, &csa_ie);
e6b7cde4 1129 if (res < 0)
b4f286a1 1130 ieee80211_queue_work(&local->hw,
882a7c69 1131 &ifmgd->csa_connection_drop_work);
e6b7cde4 1132 if (res)
cc32abd4 1133 return;
cd64f2a9 1134
c0f17eb9 1135 if (!cfg80211_chandef_usable(local->hw.wiphy, &csa_ie.chandef,
85220d71
JB		 1136 IEEE80211_CHAN_DISABLED)) {
1137 sdata_info(sdata,
1138 "AP %pM switches to unsupported channel (%d MHz, width:%d, CF1/2: %d/%d MHz), disconnecting\n",
e6b7cde4 1139 ifmgd->associated->bssid,
c0f17eb9
CYY		 1140 csa_ie.chandef.chan->center_freq,
1141 csa_ie.chandef.width, csa_ie.chandef.center_freq1,
1142 csa_ie.chandef.center_freq2);
85220d71
JB		 1143 ieee80211_queue_work(&local->hw,
1144 &ifmgd->csa_connection_drop_work);
1145 return;
1146 }
1147
4c3ebc56 1148 mutex_lock(&local->mtx);
7578d575 1149 mutex_lock(&local->chanctx_mtx);
4c3ebc56
MK		 1150 conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
1151 lockdep_is_held(&local->chanctx_mtx));
1152 if (!conf) {
1153 sdata_info(sdata,
1154 "no channel context assigned to vif?, disconnecting\n");
1155 ieee80211_queue_work(&local->hw,
1156 &ifmgd->csa_connection_drop_work);
1157 mutex_unlock(&local->chanctx_mtx);
1158 mutex_unlock(&local->mtx);
1159 return;
1160 }
1161
1162 chanctx = container_of(conf, struct ieee80211_chanctx, conf);
1163
0f791eb4
LC		 1164 if (local->use_chanctx &&
1165 !(local->hw.flags & IEEE80211_HW_CHANCTX_STA_CSA)) {
1166 sdata_info(sdata,
1167 "driver doesn't support chan-switch with channel contexts\n");
1168 ieee80211_queue_work(&local->hw,
1169 &ifmgd->csa_connection_drop_work);
1170 mutex_unlock(&local->chanctx_mtx);
1171 mutex_unlock(&local->mtx);
1172 return;
55de908a
JB		 1173 }
1174
6d027bcc
LC		 1175 ch_switch.timestamp = timestamp;
1176 ch_switch.device_timestamp = device_timestamp;
1177 ch_switch.block_tx = csa_ie.mode;
1178 ch_switch.chandef = csa_ie.chandef;
1179 ch_switch.count = csa_ie.count;
1180
1181 if (drv_pre_channel_switch(sdata, &ch_switch)) {
1182 sdata_info(sdata,
1183 "preparing for channel switch failed, disconnecting\n");
1184 ieee80211_queue_work(&local->hw,
1185 &ifmgd->csa_connection_drop_work);
1186 mutex_unlock(&local->chanctx_mtx);
1187 mutex_unlock(&local->mtx);
1188 return;
1189 }
1190
4c3ebc56
MK		 1191 res = ieee80211_vif_reserve_chanctx(sdata, &csa_ie.chandef,
1192 chanctx->mode, false);
1193 if (res) {
55de908a 1194 sdata_info(sdata,
4c3ebc56
MK		 1195 "failed to reserve channel context for channel switch, disconnecting (err=%d)\n",
1196 res);
b4f286a1 1197 ieee80211_queue_work(&local->hw,
55de908a 1198 &ifmgd->csa_connection_drop_work);
b4f286a1 1199 mutex_unlock(&local->chanctx_mtx);
4c3ebc56 1200 mutex_unlock(&local->mtx);
55de908a
JB		 1201 return;
1202 }
b4f286a1 1203 mutex_unlock(&local->chanctx_mtx);
55de908a 1204
c46a73f3 1205 sdata->vif.csa_active = true;
4c3ebc56 1206 sdata->csa_chandef = csa_ie.chandef;
59af6928 1207 sdata->csa_block_tx = csa_ie.mode;
55de908a 1208
59af6928 1209 if (sdata->csa_block_tx)
a46992b4
LC		 1210 ieee80211_stop_vif_queues(local, sdata,
1211 IEEE80211_QUEUE_STOP_REASON_CSA);
59af6928 1212 mutex_unlock(&local->mtx);
57eebdf3 1213
2f457293
LC		 1214 cfg80211_ch_switch_started_notify(sdata->dev, &csa_ie.chandef,
1215 csa_ie.count);
1216
b4f286a1 1217 if (local->ops->channel_switch) {
5ce6e438 1218 /* use driver's channel switch callback */
0f791eb4 1219 drv_channel_switch(local, sdata, &ch_switch);
5ce6e438
JB		 1220 return;
1221 }
1222
1223 /* channel switch handled in software */
c0f17eb9 1224 if (csa_ie.count <= 1)
b4f286a1 1225 ieee80211_queue_work(&local->hw, &ifmgd->chswitch_work);
57eebdf3 1226 else
cc32abd4 1227 mod_timer(&ifmgd->chswitch_timer,
c0f17eb9 1228 TU_TO_EXP_TIME(csa_ie.count * cbss->beacon_interval));
cc32abd4
JB		 1229}
1230
24a4e400
SG		 1231static bool
1232ieee80211_find_80211h_pwr_constr(struct ieee80211_sub_if_data *sdata,
1233 struct ieee80211_channel *channel,
1234 const u8 *country_ie, u8 country_ie_len,
1235 const u8 *pwr_constr_elem,
1236 int *chan_pwr, int *pwr_reduction)
cc32abd4 1237{
04b7b2ff
JB		 1238 struct ieee80211_country_ie_triplet *triplet;
1239 int chan = ieee80211_frequency_to_channel(channel->center_freq);
24a4e400 1240 int i, chan_increment;
04b7b2ff 1241 bool have_chan_pwr = false;
cc32abd4 1242
04b7b2ff
JB		 1243 /* Invalid IE */
1244 if (country_ie_len % 2 || country_ie_len < IEEE80211_COUNTRY_IE_MIN_LEN)
24a4e400 1245 return false;
cc32abd4 1246
04b7b2ff
JB		 1247 triplet = (void *)(country_ie + 3);
1248 country_ie_len -= 3;
1249
1250 switch (channel->band) {
1251 default:
1252 WARN_ON_ONCE(1);
1253 /* fall through */
1254 case IEEE80211_BAND_2GHZ:
1255 case IEEE80211_BAND_60GHZ:
1256 chan_increment = 1;
1257 break;
1258 case IEEE80211_BAND_5GHZ:
1259 chan_increment = 4;
1260 break;
cc32abd4 1261 }
04b7b2ff
JB		 1262
1263 /* find channel */
1264 while (country_ie_len >= 3) {
1265 u8 first_channel = triplet->chans.first_channel;
1266
1267 if (first_channel >= IEEE80211_COUNTRY_EXTENSION_ID)
1268 goto next;
1269
1270 for (i = 0; i < triplet->chans.num_channels; i++) {
1271 if (first_channel + i * chan_increment == chan) {
1272 have_chan_pwr = true;
24a4e400 1273 *chan_pwr = triplet->chans.max_power;
04b7b2ff
JB		 1274 break;
1275 }
1276 }
1277 if (have_chan_pwr)
1278 break;
1279
1280 next:
1281 triplet++;
1282 country_ie_len -= 3;
1283 }
1284
24a4e400
SG		 1285 if (have_chan_pwr)
1286 *pwr_reduction = *pwr_constr_elem;
1287 return have_chan_pwr;
1288}
1289
c8d65917
SG		 1290static void ieee80211_find_cisco_dtpc(struct ieee80211_sub_if_data *sdata,
1291 struct ieee80211_channel *channel,
1292 const u8 *cisco_dtpc_ie,
1293 int *pwr_level)
1294{
1295 /* From practical testing, the first data byte of the DTPC element
1296 * seems to contain the requested dBm level, and the CLI on Cisco
1297 * APs clearly state the range is -127 to 127 dBm, which indicates
1298 * a signed byte, although it seemingly never actually goes negative.
1299 * The other byte seems to always be zero.
1300 */
1301 *pwr_level = (__s8)cisco_dtpc_ie[4];
1302}
1303
24a4e400
SG		 1304static u32 ieee80211_handle_pwr_constr(struct ieee80211_sub_if_data *sdata,
1305 struct ieee80211_channel *channel,
1306 struct ieee80211_mgmt *mgmt,
1307 const u8 *country_ie, u8 country_ie_len,
c8d65917
SG		 1308 const u8 *pwr_constr_ie,
1309 const u8 *cisco_dtpc_ie)
24a4e400 1310{
c8d65917
SG		 1311 bool has_80211h_pwr = false, has_cisco_pwr = false;
1312 int chan_pwr = 0, pwr_reduction_80211h = 0;
1313 int pwr_level_cisco, pwr_level_80211h;
24a4e400 1314 int new_ap_level;
04b7b2ff 1315
24a4e400
SG		 1316 if (country_ie && pwr_constr_ie &&
1317 mgmt->u.probe_resp.capab_info &
1318 cpu_to_le16(WLAN_CAPABILITY_SPECTRUM_MGMT)) {
1319 has_80211h_pwr = ieee80211_find_80211h_pwr_constr(
1320 sdata, channel, country_ie, country_ie_len,
1321 pwr_constr_ie, &chan_pwr, &pwr_reduction_80211h);
c8d65917
SG		 1322 pwr_level_80211h =
1323 max_t(int, 0, chan_pwr - pwr_reduction_80211h);
1324 }
1325
1326 if (cisco_dtpc_ie) {
1327 ieee80211_find_cisco_dtpc(
1328 sdata, channel, cisco_dtpc_ie, &pwr_level_cisco);
1329 has_cisco_pwr = true;
24a4e400 1330 }
04b7b2ff 1331
c8d65917 1332 if (!has_80211h_pwr && !has_cisco_pwr)
1ea6f9c0 1333 return 0;
04b7b2ff 1334
c8d65917
SG		 1335 /* If we have both 802.11h and Cisco DTPC, apply both limits
1336 * by picking the smallest of the two power levels advertised.
1337 */
1338 if (has_80211h_pwr &&
1339 (!has_cisco_pwr || pwr_level_80211h <= pwr_level_cisco)) {
1340 sdata_info(sdata,
1341 "Limiting TX power to %d (%d - %d) dBm as advertised by %pM\n",
1342 pwr_level_80211h, chan_pwr, pwr_reduction_80211h,
1343 sdata->u.mgd.bssid);
1344 new_ap_level = pwr_level_80211h;
1345 } else { /* has_cisco_pwr is always true here. */
1346 sdata_info(sdata,
1347 "Limiting TX power to %d dBm as advertised by %pM\n",
1348 pwr_level_cisco, sdata->u.mgd.bssid);
1349 new_ap_level = pwr_level_cisco;
1350 }
04b7b2ff 1351
1ea6f9c0
JB		 1352 if (sdata->ap_power_level == new_ap_level)
1353 return 0;
04b7b2ff 1354
1ea6f9c0
JB		 1355 sdata->ap_power_level = new_ap_level;
1356 if (__ieee80211_recalc_txpower(sdata))
1357 return BSS_CHANGED_TXPOWER;
1358 return 0;
cc32abd4
JB		 1359}
1360
965bedad
JB		 1361/* powersave */
1362static void ieee80211_enable_ps(struct ieee80211_local *local,
1363 struct ieee80211_sub_if_data *sdata)
1364{
1365 struct ieee80211_conf *conf = &local->hw.conf;
1366
d5edaedc
JB		 1367 /*
1368 * If we are scanning right now then the parameters will
1369 * take effect when scan finishes.
1370 */
fbe9c429 1371 if (local->scanning)
d5edaedc
JB		 1372 return;
1373
965bedad
JB		 1374 if (conf->dynamic_ps_timeout > 0 &&
1375 !(local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)) {
1376 mod_timer(&local->dynamic_ps_timer, jiffies +
1377 msecs_to_jiffies(conf->dynamic_ps_timeout));
1378 } else {
1379 if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK)
1380 ieee80211_send_nullfunc(local, sdata, 1);
375177bf 1381
2a13052f
JO		 1382 if ((local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) &&
1383 (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS))
1384 return;
1385
1386 conf->flags |= IEEE80211_CONF_PS;
1387 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
965bedad
JB		 1388 }
1389}
1390
1391static void ieee80211_change_ps(struct ieee80211_local *local)
1392{
1393 struct ieee80211_conf *conf = &local->hw.conf;
1394
1395 if (local->ps_sdata) {
965bedad
JB		 1396 ieee80211_enable_ps(local, local->ps_sdata);
1397 } else if (conf->flags & IEEE80211_CONF_PS) {
1398 conf->flags &= ~IEEE80211_CONF_PS;
1399 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1400 del_timer_sync(&local->dynamic_ps_timer);
1401 cancel_work_sync(&local->dynamic_ps_enable_work);
1402 }
1403}
1404
808118cb
JY		 1405static bool ieee80211_powersave_allowed(struct ieee80211_sub_if_data *sdata)
1406{
1407 struct ieee80211_if_managed *mgd = &sdata->u.mgd;
1408 struct sta_info *sta = NULL;
c2c98fde 1409 bool authorized = false;
808118cb
JY		 1410
1411 if (!mgd->powersave)
1412 return false;
1413
05cb9108
JB		 1414 if (mgd->broken_ap)
1415 return false;
1416
808118cb
JY		 1417 if (!mgd->associated)
1418 return false;
1419
392b9ffb 1420 if (mgd->flags & IEEE80211_STA_CONNECTION_POLL)
808118cb
JY		 1421 return false;
1422
989c6505 1423 if (!mgd->have_beacon)
ce857888
AB		 1424 return false;
1425
808118cb
JY		 1426 rcu_read_lock();
1427 sta = sta_info_get(sdata, mgd->bssid);
1428 if (sta)
c2c98fde 1429 authorized = test_sta_flag(sta, WLAN_STA_AUTHORIZED);
808118cb
JY		 1430 rcu_read_unlock();
1431
c2c98fde 1432 return authorized;
808118cb
JY		 1433}
1434
965bedad 1435/* need to hold RTNL or interface lock */
10f644a4 1436void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency)
965bedad
JB		 1437{
1438 struct ieee80211_sub_if_data *sdata, *found = NULL;
1439 int count = 0;
195e294d 1440 int timeout;
965bedad
JB		 1441
1442 if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS)) {
1443 local->ps_sdata = NULL;
1444 return;
1445 }
1446
1447 list_for_each_entry(sdata, &local->interfaces, list) {
9607e6b6 1448 if (!ieee80211_sdata_running(sdata))
965bedad 1449 continue;
8c7914de
RM		 1450 if (sdata->vif.type == NL80211_IFTYPE_AP) {
1451 /* If an AP vif is found, then disable PS
1452 * by setting the count to zero thereby setting
1453 * ps_sdata to NULL.
1454 */
1455 count = 0;
1456 break;
1457 }
965bedad
JB		 1458 if (sdata->vif.type != NL80211_IFTYPE_STATION)
1459 continue;
1460 found = sdata;
1461 count++;
1462 }
1463
808118cb 1464 if (count == 1 && ieee80211_powersave_allowed(found)) {
10f644a4
JB		 1465 s32 beaconint_us;
1466
1467 if (latency < 0)
ed77134b 1468 latency = pm_qos_request(PM_QOS_NETWORK_LATENCY);
10f644a4
JB		 1469
1470 beaconint_us = ieee80211_tu_to_usec(
1471 found->vif.bss_conf.beacon_int);
1472
ff616381 1473 timeout = local->dynamic_ps_forced_timeout;
195e294d
JO		 1474 if (timeout < 0) {
1475 /*
ff616381
JO		 1476 * Go to full PSM if the user configures a very low
1477 * latency requirement.
0ab82b04
EP		 1478 * The 2000 second value is there for compatibility
1479 * until the PM_QOS_NETWORK_LATENCY is configured
1480 * with real values.
195e294d 1481 */
0ab82b04
EP		 1482 if (latency > (1900 * USEC_PER_MSEC) &&
1483 latency != (2000 * USEC_PER_SEC))
195e294d 1484 timeout = 0;
ff616381
JO		 1485 else
1486 timeout = 100;
195e294d 1487 }
09b85568 1488 local->hw.conf.dynamic_ps_timeout = timeout;
195e294d 1489
04fe2037 1490 if (beaconint_us > latency) {
10f644a4 1491 local->ps_sdata = NULL;
04fe2037 1492 } else {
04fe2037 1493 int maxslp = 1;
826262c3 1494 u8 dtimper = found->u.mgd.dtim_period;
56007a02
JB		 1495
1496 /* If the TIM IE is invalid, pretend the value is 1 */
1497 if (!dtimper)
1498 dtimper = 1;
1499 else if (dtimper > 1)
04fe2037
JB		 1500 maxslp = min_t(int, dtimper,
1501 latency / beaconint_us);
1502
9ccebe61 1503 local->hw.conf.max_sleep_period = maxslp;
56007a02 1504 local->hw.conf.ps_dtim_period = dtimper;
10f644a4 1505 local->ps_sdata = found;
04fe2037 1506 }
10f644a4 1507 } else {
965bedad 1508 local->ps_sdata = NULL;
10f644a4 1509 }
965bedad
JB		 1510
1511 ieee80211_change_ps(local);
1512}
1513
ab095877
EP		 1514void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata)
1515{
1516 bool ps_allowed = ieee80211_powersave_allowed(sdata);
1517
1518 if (sdata->vif.bss_conf.ps != ps_allowed) {
1519 sdata->vif.bss_conf.ps = ps_allowed;
1520 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_PS);
1521 }
1522}
1523
965bedad
JB		 1524void ieee80211_dynamic_ps_disable_work(struct work_struct *work)
1525{
1526 struct ieee80211_local *local =
1527 container_of(work, struct ieee80211_local,
1528 dynamic_ps_disable_work);
1529
1530 if (local->hw.conf.flags & IEEE80211_CONF_PS) {
1531 local->hw.conf.flags &= ~IEEE80211_CONF_PS;
1532 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1533 }
1534
1535 ieee80211_wake_queues_by_reason(&local->hw,
445ea4e8 1536 IEEE80211_MAX_QUEUE_MAP,
cca07b00
LC		 1537 IEEE80211_QUEUE_STOP_REASON_PS,
1538 false);
965bedad
JB		 1539}
1540
1541void ieee80211_dynamic_ps_enable_work(struct work_struct *work)
1542{
1543 struct ieee80211_local *local =
1544 container_of(work, struct ieee80211_local,
1545 dynamic_ps_enable_work);
1546 struct ieee80211_sub_if_data *sdata = local->ps_sdata;
5e34069c 1547 struct ieee80211_if_managed *ifmgd;
1ddc2867
RM		 1548 unsigned long flags;
1549 int q;
965bedad
JB		 1550
1551 /* can only happen when PS was just disabled anyway */
1552 if (!sdata)
1553 return;
1554
5e34069c
CL		 1555 ifmgd = &sdata->u.mgd;
1556
965bedad
JB		 1557 if (local->hw.conf.flags & IEEE80211_CONF_PS)
1558 return;
1559
09b85568 1560 if (local->hw.conf.dynamic_ps_timeout > 0) {
77b7023a
AN		 1561 /* don't enter PS if TX frames are pending */
1562 if (drv_tx_frames_pending(local)) {
1ddc2867
RM		 1563 mod_timer(&local->dynamic_ps_timer, jiffies +
1564 msecs_to_jiffies(
1565 local->hw.conf.dynamic_ps_timeout));
1566 return;
1567 }
77b7023a
AN		 1568
1569 /*
1570 * transmission can be stopped by others which leads to
1571 * dynamic_ps_timer expiry. Postpone the ps timer if it
1572 * is not the actual idle state.
1573 */
1574 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
1575 for (q = 0; q < local->hw.queues; q++) {
1576 if (local->queue_stop_reasons[q]) {
1577 spin_unlock_irqrestore(&local->queue_stop_reason_lock,
1578 flags);
1579 mod_timer(&local->dynamic_ps_timer, jiffies +
1580 msecs_to_jiffies(
1581 local->hw.conf.dynamic_ps_timeout));
1582 return;
1583 }
1584 }
1585 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
1ddc2867 1586 }
1ddc2867 1587
375177bf 1588 if ((local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) &&
9c38a8b4 1589 !(ifmgd->flags & IEEE80211_STA_NULLFUNC_ACKED)) {
a1598383 1590 if (drv_tx_frames_pending(local)) {
e8306f98
VN		 1591 mod_timer(&local->dynamic_ps_timer, jiffies +
1592 msecs_to_jiffies(
1593 local->hw.conf.dynamic_ps_timeout));
a1598383 1594 } else {
e8306f98
VN		 1595 ieee80211_send_nullfunc(local, sdata, 1);
1596 /* Flush to get the tx status of nullfunc frame */
39ecc01d 1597 ieee80211_flush_queues(local, sdata);
e8306f98 1598 }
f3e85b9e
VN		 1599 }
1600
2a13052f
JO		 1601 if (!((local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) &&
1602 (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK)) ||
375177bf
VN		 1603 (ifmgd->flags & IEEE80211_STA_NULLFUNC_ACKED)) {
1604 ifmgd->flags &= ~IEEE80211_STA_NULLFUNC_ACKED;
1605 local->hw.conf.flags |= IEEE80211_CONF_PS;
1606 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1607 }
965bedad
JB		 1608}
1609
1610void ieee80211_dynamic_ps_timer(unsigned long data)
1611{
1612 struct ieee80211_local *local = (void *) data;
1613
78f1a8b7 1614 if (local->quiescing || local->suspended)
5bb644a0
JB		 1615 return;
1616
42935eca 1617 ieee80211_queue_work(&local->hw, &local->dynamic_ps_enable_work);
965bedad
JB		 1618}
1619
164eb02d
SW		 1620void ieee80211_dfs_cac_timer_work(struct work_struct *work)
1621{
1622 struct delayed_work *delayed_work =
1623 container_of(work, struct delayed_work, work);
1624 struct ieee80211_sub_if_data *sdata =
1625 container_of(delayed_work, struct ieee80211_sub_if_data,
1626 dfs_cac_timer_work);
d2859df5 1627 struct cfg80211_chan_def chandef = sdata->vif.bss_conf.chandef;
164eb02d 1628
34a3740d
JB		 1629 mutex_lock(&sdata->local->mtx);
1630 if (sdata->wdev.cac_started) {
1631 ieee80211_vif_release_channel(sdata);
1632 cfg80211_cac_event(sdata->dev, &chandef,
1633 NL80211_RADAR_CAC_FINISHED,
1634 GFP_KERNEL);
1635 }
1636 mutex_unlock(&sdata->local->mtx);
164eb02d
SW		 1637}
1638
02219b3a
JB		 1639static bool
1640__ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata)
1641{
1642 struct ieee80211_local *local = sdata->local;
1643 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
1644 bool ret;
1645 int ac;
1646
1647 if (local->hw.queues < IEEE80211_NUM_ACS)
1648 return false;
1649
1650 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
1651 struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac];
1652 int non_acm_ac;
1653 unsigned long now = jiffies;
1654
1655 if (tx_tspec->action == TX_TSPEC_ACTION_NONE &&
1656 tx_tspec->admitted_time &&
1657 time_after(now, tx_tspec->time_slice_start + HZ)) {
1658 tx_tspec->consumed_tx_time = 0;
1659 tx_tspec->time_slice_start = now;
1660
1661 if (tx_tspec->downgraded)
1662 tx_tspec->action =
1663 TX_TSPEC_ACTION_STOP_DOWNGRADE;
1664 }
1665
1666 switch (tx_tspec->action) {
1667 case TX_TSPEC_ACTION_STOP_DOWNGRADE:
1668 /* take the original parameters */
1669 if (drv_conf_tx(local, sdata, ac, &sdata->tx_conf[ac]))
1670 sdata_err(sdata,
1671 "failed to set TX queue parameters for queue %d\n",
1672 ac);
1673 tx_tspec->action = TX_TSPEC_ACTION_NONE;
1674 tx_tspec->downgraded = false;
1675 ret = true;
1676 break;
1677 case TX_TSPEC_ACTION_DOWNGRADE:
1678 if (time_after(now, tx_tspec->time_slice_start + HZ)) {
1679 tx_tspec->action = TX_TSPEC_ACTION_NONE;
1680 ret = true;
1681 break;
1682 }
1683 /* downgrade next lower non-ACM AC */
1684 for (non_acm_ac = ac + 1;
1685 non_acm_ac < IEEE80211_NUM_ACS;
1686 non_acm_ac++)
1687 if (!(sdata->wmm_acm & BIT(7 - 2 * non_acm_ac)))
1688 break;
1689 /* The loop will result in using BK even if it requires
1690 * admission control, such configuration makes no sense
1691 * and we have to transmit somehow - the AC selection
1692 * does the same thing.
1693 */
1694 if (drv_conf_tx(local, sdata, ac,
1695 &sdata->tx_conf[non_acm_ac]))
1696 sdata_err(sdata,
1697 "failed to set TX queue parameters for queue %d\n",
1698 ac);
1699 tx_tspec->action = TX_TSPEC_ACTION_NONE;
1700 ret = true;
1701 schedule_delayed_work(&ifmgd->tx_tspec_wk,
1702 tx_tspec->time_slice_start + HZ - now + 1);
1703 break;
1704 case TX_TSPEC_ACTION_NONE:
1705 /* nothing now */
1706 break;
1707 }
1708 }
1709
1710 return ret;
1711}
1712
1713void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata)
1714{
1715 if (__ieee80211_sta_handle_tspec_ac_params(sdata))
1716 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
1717}
1718
1719static void ieee80211_sta_handle_tspec_ac_params_wk(struct work_struct *work)
1720{
1721 struct ieee80211_sub_if_data *sdata;
1722
1723 sdata = container_of(work, struct ieee80211_sub_if_data,
1724 u.mgd.tx_tspec_wk.work);
1725 ieee80211_sta_handle_tspec_ac_params(sdata);
1726}
1727
60f8b39c 1728/* MLME */
7d25745d 1729static bool ieee80211_sta_wmm_params(struct ieee80211_local *local,
4ced3f74 1730 struct ieee80211_sub_if_data *sdata,
4a3cb702 1731 const u8 *wmm_param, size_t wmm_param_len)
f0706e82 1732{
f0706e82 1733 struct ieee80211_tx_queue_params params;
4ced3f74 1734 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
f0706e82
JB		 1735 size_t left;
1736 int count;
4a3cb702
JB		 1737 const u8 *pos;
1738 u8 uapsd_queues = 0;
f0706e82 1739
e1b3ec1a 1740 if (!local->ops->conf_tx)
7d25745d 1741 return false;
e1b3ec1a 1742
32c5057b 1743 if (local->hw.queues < IEEE80211_NUM_ACS)
7d25745d 1744 return false;
3434fbd3
JB		 1745
1746 if (!wmm_param)
7d25745d 1747 return false;
3434fbd3 1748
f0706e82 1749 if (wmm_param_len < 8 || wmm_param[5] /* version */ != 1)
7d25745d 1750 return false;
ab13315a
KV		 1751
1752 if (ifmgd->flags & IEEE80211_STA_UAPSD_ENABLED)
dc41e4d4 1753 uapsd_queues = ifmgd->uapsd_queues;
ab13315a 1754
f0706e82 1755 count = wmm_param[6] & 0x0f;
46900298 1756 if (count == ifmgd->wmm_last_param_set)
7d25745d 1757 return false;
46900298 1758 ifmgd->wmm_last_param_set = count;
f0706e82
JB		 1759
1760 pos = wmm_param + 8;
1761 left = wmm_param_len - 8;
1762
1763 memset(&params, 0, sizeof(params));
1764
00e96dec 1765 sdata->wmm_acm = 0;
f0706e82
JB		 1766 for (; left >= 4; left -= 4, pos += 4) {
1767 int aci = (pos[0] >> 5) & 0x03;
1768 int acm = (pos[0] >> 4) & 0x01;
ab13315a 1769 bool uapsd = false;
f0706e82
JB		 1770 int queue;
1771
1772 switch (aci) {
0eeb59fe 1773 case 1: /* AC_BK */
e100bb64 1774 queue = 3;
988c0f72 1775 if (acm)
00e96dec 1776 sdata->wmm_acm |= BIT(1) | BIT(2); /* BK/- */
ab13315a
KV		 1777 if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BK)
1778 uapsd = true;
f0706e82 1779 break;
0eeb59fe 1780 case 2: /* AC_VI */
e100bb64 1781 queue = 1;
988c0f72 1782 if (acm)
00e96dec 1783 sdata->wmm_acm |= BIT(4) | BIT(5); /* CL/VI */
ab13315a
KV		 1784 if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VI)
1785 uapsd = true;
f0706e82 1786 break;
0eeb59fe 1787 case 3: /* AC_VO */
e100bb64 1788 queue = 0;
988c0f72 1789 if (acm)
00e96dec 1790 sdata->wmm_acm |= BIT(6) | BIT(7); /* VO/NC */
ab13315a
KV		 1791 if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VO)
1792 uapsd = true;
f0706e82 1793 break;
0eeb59fe 1794 case 0: /* AC_BE */
f0706e82 1795 default:
e100bb64 1796 queue = 2;
988c0f72 1797 if (acm)
00e96dec 1798 sdata->wmm_acm |= BIT(0) | BIT(3); /* BE/EE */
ab13315a
KV		 1799 if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BE)
1800 uapsd = true;
f0706e82
JB		 1801 break;
1802 }
1803
1804 params.aifs = pos[0] & 0x0f;
1805 params.cw_max = ecw2cw((pos[1] & 0xf0) >> 4);
1806 params.cw_min = ecw2cw(pos[1] & 0x0f);
f434b2d1 1807 params.txop = get_unaligned_le16(pos + 2);
908f8d07 1808 params.acm = acm;
ab13315a
KV		 1809 params.uapsd = uapsd;
1810
bdcbd8e0 1811 mlme_dbg(sdata,
02219b3a 1812 "WMM queue=%d aci=%d acm=%d aifs=%d cWmin=%d cWmax=%d txop=%d uapsd=%d, downgraded=%d\n",
bdcbd8e0
JB		 1813 queue, aci, acm,
1814 params.aifs, params.cw_min, params.cw_max,
02219b3a
JB		 1815 params.txop, params.uapsd,
1816 ifmgd->tx_tspec[queue].downgraded);
f6f3def3 1817 sdata->tx_conf[queue] = params;
02219b3a
JB		 1818 if (!ifmgd->tx_tspec[queue].downgraded &&
1819 drv_conf_tx(local, sdata, queue, &params))
bdcbd8e0
JB		 1820 sdata_err(sdata,
1821 "failed to set TX queue parameters for queue %d\n",
1822 queue);
f0706e82 1823 }
e1b3ec1a
SG		 1824
1825 /* enable WMM or activate new settings */
4ced3f74 1826 sdata->vif.bss_conf.qos = true;
7d25745d 1827 return true;
f0706e82
JB		 1828}
1829
925e64c3
SG		 1830static void __ieee80211_stop_poll(struct ieee80211_sub_if_data *sdata)
1831{
1832 lockdep_assert_held(&sdata->local->mtx);
1833
392b9ffb 1834 sdata->u.mgd.flags &= ~IEEE80211_STA_CONNECTION_POLL;
925e64c3
SG		 1835 ieee80211_run_deferred_scan(sdata->local);
1836}
1837
1838static void ieee80211_stop_poll(struct ieee80211_sub_if_data *sdata)
1839{
1840 mutex_lock(&sdata->local->mtx);
1841 __ieee80211_stop_poll(sdata);
1842 mutex_unlock(&sdata->local->mtx);
1843}
1844
7a5158ef
JB		 1845static u32 ieee80211_handle_bss_capability(struct ieee80211_sub_if_data *sdata,
1846 u16 capab, bool erp_valid, u8 erp)
5628221c 1847{
bda3933a 1848 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
471b3efd 1849 u32 changed = 0;
7a5158ef
JB		 1850 bool use_protection;
1851 bool use_short_preamble;
1852 bool use_short_slot;
1853
1854 if (erp_valid) {
1855 use_protection = (erp & WLAN_ERP_USE_PROTECTION) != 0;
1856 use_short_preamble = (erp & WLAN_ERP_BARKER_PREAMBLE) == 0;
1857 } else {
1858 use_protection = false;
1859 use_short_preamble = !!(capab & WLAN_CAPABILITY_SHORT_PREAMBLE);
1860 }
1861
1862 use_short_slot = !!(capab & WLAN_CAPABILITY_SHORT_SLOT_TIME);
55de908a 1863 if (ieee80211_get_sdata_band(sdata) == IEEE80211_BAND_5GHZ)
43d35343 1864 use_short_slot = true;
5628221c 1865
471b3efd 1866 if (use_protection != bss_conf->use_cts_prot) {
471b3efd
JB		 1867 bss_conf->use_cts_prot = use_protection;
1868 changed |= BSS_CHANGED_ERP_CTS_PROT;
5628221c 1869 }
7e9ed188 1870
d43c7b37 1871 if (use_short_preamble != bss_conf->use_short_preamble) {
d43c7b37 1872 bss_conf->use_short_preamble = use_short_preamble;
471b3efd 1873 changed |= BSS_CHANGED_ERP_PREAMBLE;
7e9ed188 1874 }
d9430a32 1875
7a5158ef 1876 if (use_short_slot != bss_conf->use_short_slot) {
7a5158ef
JB		 1877 bss_conf->use_short_slot = use_short_slot;
1878 changed |= BSS_CHANGED_ERP_SLOT;
50c4afb9
JL		 1879 }
1880
1881 return changed;
1882}
1883
f698d856 1884static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata,
0c1ad2ca 1885 struct cfg80211_bss *cbss,
ae5eb026 1886 u32 bss_info_changed)
f0706e82 1887{
0c1ad2ca 1888 struct ieee80211_bss *bss = (void *)cbss->priv;
471b3efd 1889 struct ieee80211_local *local = sdata->local;
68542962 1890 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
d6f2da5b 1891
ae5eb026 1892 bss_info_changed |= BSS_CHANGED_ASSOC;
77fdaa12 1893 bss_info_changed |= ieee80211_handle_bss_capability(sdata,
50ae34a2 1894 bss_conf->assoc_capability, bss->has_erp_value, bss->erp_value);
21c0cbe7 1895
7ccc8bd7 1896 sdata->u.mgd.beacon_timeout = usecs_to_jiffies(ieee80211_tu_to_usec(
59c1ec2b 1897 beacon_loss_count * bss_conf->beacon_int));
7ccc8bd7 1898
0c1ad2ca
JB		 1899 sdata->u.mgd.associated = cbss;
1900 memcpy(sdata->u.mgd.bssid, cbss->bssid, ETH_ALEN);
f0706e82 1901
17e4ec14
JM		 1902 sdata->u.mgd.flags |= IEEE80211_STA_RESET_SIGNAL_AVE;
1903
488dd7b5 1904 if (sdata->vif.p2p) {
9caf0364 1905 const struct cfg80211_bss_ies *ies;
488dd7b5 1906
9caf0364
JB		 1907 rcu_read_lock();
1908 ies = rcu_dereference(cbss->ies);
1909 if (ies) {
9caf0364
JB		 1910 int ret;
1911
1912 ret = cfg80211_get_p2p_attr(
1913 ies->data, ies->len,
1914 IEEE80211_P2P_ATTR_ABSENCE_NOTICE,
67baf663
JD		 1915 (u8 *) &bss_conf->p2p_noa_attr,
1916 sizeof(bss_conf->p2p_noa_attr));
9caf0364 1917 if (ret >= 2) {
67baf663
JD		 1918 sdata->u.mgd.p2p_noa_index =
1919 bss_conf->p2p_noa_attr.index;
9caf0364 1920 bss_info_changed |= BSS_CHANGED_P2P_PS;
9caf0364 1921 }
488dd7b5 1922 }
9caf0364 1923 rcu_read_unlock();
488dd7b5
JB		 1924 }
1925
b291ba11 1926 /* just to be sure */
925e64c3 1927 ieee80211_stop_poll(sdata);
b291ba11 1928
9ac19a90 1929 ieee80211_led_assoc(local, 1);
9306102e 1930
989c6505 1931 if (sdata->u.mgd.have_beacon) {
826262c3
JB		 1932 /*
1933 * If the AP is buggy we may get here with no DTIM period
1934 * known, so assume it's 1 which is the only safe assumption
1935 * in that case, although if the TIM IE is broken powersave
1936 * probably just won't work at all.
1937 */
1938 bss_conf->dtim_period = sdata->u.mgd.dtim_period ?: 1;
817cee76 1939 bss_conf->beacon_rate = bss->beacon_rate;
989c6505 1940 bss_info_changed |= BSS_CHANGED_BEACON_INFO;
826262c3 1941 } else {
817cee76 1942 bss_conf->beacon_rate = NULL;
e5b900d2 1943 bss_conf->dtim_period = 0;
826262c3 1944 }
e5b900d2 1945
68542962 1946 bss_conf->assoc = 1;
9cef8737 1947
a97c13c3 1948 /* Tell the driver to monitor connection quality (if supported) */
ea086359 1949 if (sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI &&
68542962 1950 bss_conf->cqm_rssi_thold)
a97c13c3
JO		 1951 bss_info_changed |= BSS_CHANGED_CQM;
1952
68542962 1953 /* Enable ARP filtering */
0f19b41e 1954 if (bss_conf->arp_addr_cnt)
68542962 1955 bss_info_changed |= BSS_CHANGED_ARP_FILTER;
68542962 1956
ae5eb026 1957 ieee80211_bss_info_change_notify(sdata, bss_info_changed);
f0706e82 1958
056508dc
JB		 1959 mutex_lock(&local->iflist_mtx);
1960 ieee80211_recalc_ps(local, -1);
1961 mutex_unlock(&local->iflist_mtx);
e0cb686f 1962
04ecd257 1963 ieee80211_recalc_smps(sdata);
ab095877
EP		 1964 ieee80211_recalc_ps_vif(sdata);
1965
9ac19a90 1966 netif_carrier_on(sdata->dev);
f0706e82
JB		 1967}
1968
e69e95db 1969static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata,
37ad3888
JB		 1970 u16 stype, u16 reason, bool tx,
1971 u8 *frame_buf)
aa458d17 1972{
46900298 1973 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
aa458d17 1974 struct ieee80211_local *local = sdata->local;
3cc5240b 1975 u32 changed = 0;
aa458d17 1976
8d61ffa5 1977 sdata_assert_lock(sdata);
77fdaa12 1978
37ad3888
JB		 1979 if (WARN_ON_ONCE(tx && !frame_buf))
1980 return;
1981
b291ba11
JB		 1982 if (WARN_ON(!ifmgd->associated))
1983 return;
1984
79543d8e
DS		 1985 ieee80211_stop_poll(sdata);
1986
77fdaa12 1987 ifmgd->associated = NULL;
aa458d17
TW		 1988 netif_carrier_off(sdata->dev);
1989
88bc40e8
EP		 1990 /*
1991 * if we want to get out of ps before disassoc (why?) we have
1992 * to do it before sending disassoc, as otherwise the null-packet
1993 * won't be valid.
1994 */
1995 if (local->hw.conf.flags & IEEE80211_CONF_PS) {
1996 local->hw.conf.flags &= ~IEEE80211_CONF_PS;
1997 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1998 }
1999 local->ps_sdata = NULL;
2000
ab095877
EP		 2001 /* disable per-vif ps */
2002 ieee80211_recalc_ps_vif(sdata);
2003
f823981e
EP		 2004 /* flush out any pending frame (e.g. DELBA) before deauth/disassoc */
2005 if (tx)
39ecc01d 2006 ieee80211_flush_queues(local, sdata);
f823981e 2007
37ad3888
JB		 2008 /* deauthenticate/disassociate now */
2009 if (tx || frame_buf)
88a9e31c
EP		 2010 ieee80211_send_deauth_disassoc(sdata, ifmgd->bssid, stype,
2011 reason, tx, frame_buf);
37ad3888
JB		 2012
2013 /* flush out frame */
2014 if (tx)
39ecc01d 2015 ieee80211_flush_queues(local, sdata);
37ad3888 2016
88a9e31c
EP		 2017 /* clear bssid only after building the needed mgmt frames */
2018 memset(ifmgd->bssid, 0, ETH_ALEN);
2019
37ad3888 2020 /* remove AP and TDLS peers */
d34ba216 2021 sta_info_flush(sdata);
37ad3888
JB		 2022
2023 /* finally reset all BSS / config parameters */
f5e5bf25
TW		 2024 changed |= ieee80211_reset_erp_info(sdata);
2025
f5e5bf25 2026 ieee80211_led_assoc(local, 0);
ae5eb026
JB		 2027 changed |= BSS_CHANGED_ASSOC;
2028 sdata->vif.bss_conf.assoc = false;
f5e5bf25 2029
67baf663
JD		 2030 ifmgd->p2p_noa_index = -1;
2031 memset(&sdata->vif.bss_conf.p2p_noa_attr, 0,
2032 sizeof(sdata->vif.bss_conf.p2p_noa_attr));
488dd7b5 2033
dd5ecfea 2034 /* on the next assoc, re-program HT/VHT parameters */
ef96a842
BG		 2035 memset(&ifmgd->ht_capa, 0, sizeof(ifmgd->ht_capa));
2036 memset(&ifmgd->ht_capa_mask, 0, sizeof(ifmgd->ht_capa_mask));
dd5ecfea
JB		 2037 memset(&ifmgd->vht_capa, 0, sizeof(ifmgd->vht_capa));
2038 memset(&ifmgd->vht_capa_mask, 0, sizeof(ifmgd->vht_capa_mask));
413ad50a 2039
1ea6f9c0 2040 sdata->ap_power_level = IEEE80211_UNSET_POWER_LEVEL;
a8302de9 2041
520eb820
KV		 2042 del_timer_sync(&local->dynamic_ps_timer);
2043 cancel_work_sync(&local->dynamic_ps_enable_work);
2044
68542962 2045 /* Disable ARP filtering */
0f19b41e 2046 if (sdata->vif.bss_conf.arp_addr_cnt)
68542962 2047 changed |= BSS_CHANGED_ARP_FILTER;
68542962 2048
3abead59
JB		 2049 sdata->vif.bss_conf.qos = false;
2050 changed |= BSS_CHANGED_QOS;
2051
0aaffa9b
JB		 2052 /* The BSSID (not really interesting) and HT changed */
2053 changed |= BSS_CHANGED_BSSID | BSS_CHANGED_HT;
ae5eb026 2054 ieee80211_bss_info_change_notify(sdata, changed);
8e268e47 2055
3abead59
JB		 2056 /* disassociated - set to defaults now */
2057 ieee80211_set_wmm_default(sdata, false);
2058
b9dcf712
JB		 2059 del_timer_sync(&sdata->u.mgd.conn_mon_timer);
2060 del_timer_sync(&sdata->u.mgd.bcn_mon_timer);
2061 del_timer_sync(&sdata->u.mgd.timer);
2062 del_timer_sync(&sdata->u.mgd.chswitch_timer);
2d9957cc 2063
826262c3 2064 sdata->vif.bss_conf.dtim_period = 0;
817cee76
AB		 2065 sdata->vif.bss_conf.beacon_rate = NULL;
2066
989c6505 2067 ifmgd->have_beacon = false;
826262c3 2068
028e8da0 2069 ifmgd->flags = 0;
34a3740d 2070 mutex_lock(&local->mtx);
028e8da0 2071 ieee80211_vif_release_channel(sdata);
59af6928
MK		 2072
2073 sdata->vif.csa_active = false;
0c21e632 2074 ifmgd->csa_waiting_bcn = false;
a46992b4
LC		 2075 if (sdata->csa_block_tx) {
2076 ieee80211_wake_vif_queues(local, sdata,
2077 IEEE80211_QUEUE_STOP_REASON_CSA);
2078 sdata->csa_block_tx = false;
2079 }
34a3740d 2080 mutex_unlock(&local->mtx);
2475b1cc 2081
02219b3a
JB		 2082 /* existing TX TSPEC sessions no longer exist */
2083 memset(ifmgd->tx_tspec, 0, sizeof(ifmgd->tx_tspec));
2084 cancel_delayed_work_sync(&ifmgd->tx_tspec_wk);
2085
2475b1cc 2086 sdata->encrypt_headroom = IEEE80211_ENCRYPT_HEADROOM;
aa458d17 2087}
f0706e82 2088
3cf335d5
KV		 2089void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
2090 struct ieee80211_hdr *hdr)
2091{
2092 /*
2093 * We can postpone the mgd.timer whenever receiving unicast frames
2094 * from AP because we know that the connection is working both ways
2095 * at that time. But multicast frames (and hence also beacons) must
2096 * be ignored here, because we need to trigger the timer during
b291ba11
JB		 2097 * data idle periods for sending the periodic probe request to the
2098 * AP we're connected to.
3cf335d5 2099 */
b291ba11
JB		 2100 if (is_multicast_ether_addr(hdr->addr1))
2101 return;
2102
be099e82 2103 ieee80211_sta_reset_conn_monitor(sdata);
3cf335d5 2104}
f0706e82 2105
4e5ff376
FF		 2106static void ieee80211_reset_ap_probe(struct ieee80211_sub_if_data *sdata)
2107{
2108 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
133d40f9 2109 struct ieee80211_local *local = sdata->local;
4e5ff376 2110
133d40f9 2111 mutex_lock(&local->mtx);
392b9ffb
SG		 2112 if (!(ifmgd->flags & IEEE80211_STA_CONNECTION_POLL))
2113 goto out;
4e5ff376 2114
925e64c3 2115 __ieee80211_stop_poll(sdata);
133d40f9
SG		 2116
2117 mutex_lock(&local->iflist_mtx);
2118 ieee80211_recalc_ps(local, -1);
2119 mutex_unlock(&local->iflist_mtx);
4e5ff376
FF		 2120
2121 if (sdata->local->hw.flags & IEEE80211_HW_CONNECTION_MONITOR)
133d40f9 2122 goto out;
4e5ff376
FF		 2123
2124 /*
2125 * We've received a probe response, but are not sure whether
2126 * we have or will be receiving any beacons or data, so let's
2127 * schedule the timers again, just in case.
2128 */
2129 ieee80211_sta_reset_beacon_monitor(sdata);
2130
2131 mod_timer(&ifmgd->conn_mon_timer,
2132 round_jiffies_up(jiffies +
2133 IEEE80211_CONNECTION_IDLE_TIME));
133d40f9 2134out:
133d40f9 2135 mutex_unlock(&local->mtx);
4e5ff376
FF		 2136}
2137
02219b3a
JB		 2138static void ieee80211_sta_tx_wmm_ac_notify(struct ieee80211_sub_if_data *sdata,
2139 struct ieee80211_hdr *hdr,
2140 u16 tx_time)
2141{
2142 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2143 u16 tid = *ieee80211_get_qos_ctl(hdr) & IEEE80211_QOS_CTL_TID_MASK;
2144 int ac = ieee80211_ac_from_tid(tid);
2145 struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac];
2146 unsigned long now = jiffies;
2147
2148 if (likely(!tx_tspec->admitted_time))
2149 return;
2150
2151 if (time_after(now, tx_tspec->time_slice_start + HZ)) {
2152 tx_tspec->consumed_tx_time = 0;
2153 tx_tspec->time_slice_start = now;
2154
2155 if (tx_tspec->downgraded) {
2156 tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE;
2157 schedule_delayed_work(&ifmgd->tx_tspec_wk, 0);
2158 }
2159 }
2160
2161 if (tx_tspec->downgraded)
2162 return;
2163
2164 tx_tspec->consumed_tx_time += tx_time;
2165
2166 if (tx_tspec->consumed_tx_time >= tx_tspec->admitted_time) {
2167 tx_tspec->downgraded = true;
2168 tx_tspec->action = TX_TSPEC_ACTION_DOWNGRADE;
2169 schedule_delayed_work(&ifmgd->tx_tspec_wk, 0);
2170 }
2171}
2172
4e5ff376 2173void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
02219b3a 2174 struct ieee80211_hdr *hdr, bool ack, u16 tx_time)
4e5ff376 2175{
02219b3a
JB		 2176 ieee80211_sta_tx_wmm_ac_notify(sdata, hdr, tx_time);
2177
75706d0e 2178 if (!ieee80211_is_data(hdr->frame_control))
4e5ff376
FF		 2179 return;
2180
4e5ff376
FF		 2181 if (ieee80211_is_nullfunc(hdr->frame_control) &&
2182 sdata->u.mgd.probe_send_count > 0) {
04ac3c0e 2183 if (ack)
cab1c7fd 2184 ieee80211_sta_reset_conn_monitor(sdata);
04ac3c0e
FF		 2185 else
2186 sdata->u.mgd.nullfunc_failed = true;
4e5ff376 2187 ieee80211_queue_work(&sdata->local->hw, &sdata->work);
cab1c7fd 2188 return;
4e5ff376 2189 }
cab1c7fd
WD		 2190
2191 if (ack)
2192 ieee80211_sta_reset_conn_monitor(sdata);
4e5ff376
FF		 2193}
2194
a43abf29
ML		 2195static void ieee80211_mgd_probe_ap_send(struct ieee80211_sub_if_data *sdata)
2196{
2197 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2198 const u8 *ssid;
f01a067d 2199 u8 *dst = ifmgd->associated->bssid;
180205bd 2200 u8 unicast_limit = max(1, max_probe_tries - 3);
f01a067d
LR		 2201
2202 /*
2203 * Try sending broadcast probe requests for the last three
2204 * probe requests after the first ones failed since some
2205 * buggy APs only support broadcast probe requests.
2206 */
2207 if (ifmgd->probe_send_count >= unicast_limit)
2208 dst = NULL;
a43abf29 2209
4e5ff376
FF		 2210 /*
2211 * When the hardware reports an accurate Tx ACK status, it's
2212 * better to send a nullfunc frame instead of a probe request,
2213 * as it will kick us off the AP quickly if we aren't associated
2214 * anymore. The timeout will be reset if the frame is ACKed by
2215 * the AP.
2216 */
992e68bf
SD		 2217 ifmgd->probe_send_count++;
2218
04ac3c0e
FF		 2219 if (sdata->local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) {
2220 ifmgd->nullfunc_failed = false;
4e5ff376 2221 ieee80211_send_nullfunc(sdata->local, sdata, 0);
04ac3c0e 2222 } else {
88c868c4
SG		 2223 int ssid_len;
2224
9caf0364 2225 rcu_read_lock();
4e5ff376 2226 ssid = ieee80211_bss_get_ie(ifmgd->associated, WLAN_EID_SSID);
88c868c4
SG		 2227 if (WARN_ON_ONCE(ssid == NULL))
2228 ssid_len = 0;
2229 else
2230 ssid_len = ssid[1];
2231
a344d677
JB		 2232 ieee80211_send_probe_req(sdata, sdata->vif.addr, NULL,
2233 ssid + 2, ssid_len, NULL,
1672c0e3 2234 0, (u32) -1, true, 0,
55de908a 2235 ifmgd->associated->channel, false);
9caf0364 2236 rcu_read_unlock();
4e5ff376 2237 }
a43abf29 2238
180205bd 2239 ifmgd->probe_timeout = jiffies + msecs_to_jiffies(probe_wait_ms);
8d61ffa5 2240 run_again(sdata, ifmgd->probe_timeout);
a43abf29
ML		 2241}
2242
b291ba11
JB		 2243static void ieee80211_mgd_probe_ap(struct ieee80211_sub_if_data *sdata,
2244 bool beacon)
04de8381 2245{
04de8381 2246 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
b291ba11 2247 bool already = false;
34bfc411 2248
9607e6b6 2249 if (!ieee80211_sdata_running(sdata))
0e2b6286
JB		 2250 return;
2251
8d61ffa5 2252 sdata_lock(sdata);
77fdaa12
JB		 2253
2254 if (!ifmgd->associated)
2255 goto out;
2256
133d40f9
SG		 2257 mutex_lock(&sdata->local->mtx);
2258
2259 if (sdata->local->tmp_channel || sdata->local->scanning) {
2260 mutex_unlock(&sdata->local->mtx);
2261 goto out;
2262 }
2263
a13fbe54 2264 if (beacon) {
bdcbd8e0 2265 mlme_dbg_ratelimited(sdata,
59c1ec2b
BG		 2266 "detected beacon loss from AP (missed %d beacons) - probing\n",
2267 beacon_loss_count);
bdcbd8e0 2268
a13fbe54
BG		 2269 ieee80211_cqm_rssi_notify(&sdata->vif,
2270 NL80211_CQM_RSSI_BEACON_LOSS_EVENT,
2271 GFP_KERNEL);
2272 }
04de8381 2273
b291ba11
JB		 2274 /*
2275 * The driver/our work has already reported this event or the
2276 * connection monitoring has kicked in and we have already sent
2277 * a probe request. Or maybe the AP died and the driver keeps
2278 * reporting until we disassociate...
2279 *
2280 * In either case we have to ignore the current call to this
2281 * function (except for setting the correct probe reason bit)
2282 * because otherwise we would reset the timer every time and
2283 * never check whether we received a probe response!
2284 */
392b9ffb 2285 if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL)
b291ba11
JB		 2286 already = true;
2287
12b5f34d
EP		 2288 ifmgd->flags |= IEEE80211_STA_CONNECTION_POLL;
2289
133d40f9
SG		 2290 mutex_unlock(&sdata->local->mtx);
2291
b291ba11
JB		 2292 if (already)
2293 goto out;
2294
4e751843
JB		 2295 mutex_lock(&sdata->local->iflist_mtx);
2296 ieee80211_recalc_ps(sdata->local, -1);
2297 mutex_unlock(&sdata->local->iflist_mtx);
2298
a43abf29
ML		 2299 ifmgd->probe_send_count = 0;
2300 ieee80211_mgd_probe_ap_send(sdata);
77fdaa12 2301 out:
8d61ffa5 2302 sdata_unlock(sdata);
04de8381
KV		 2303}
2304
a619a4c0
JO		 2305struct sk_buff *ieee80211_ap_probereq_get(struct ieee80211_hw *hw,
2306 struct ieee80211_vif *vif)
2307{
2308 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2309 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
d9b3b28b 2310 struct cfg80211_bss *cbss;
a619a4c0
JO		 2311 struct sk_buff *skb;
2312 const u8 *ssid;
88c868c4 2313 int ssid_len;
a619a4c0
JO		 2314
2315 if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
2316 return NULL;
2317
8d61ffa5 2318 sdata_assert_lock(sdata);
a619a4c0 2319
d9b3b28b
EP		 2320 if (ifmgd->associated)
2321 cbss = ifmgd->associated;
2322 else if (ifmgd->auth_data)
2323 cbss = ifmgd->auth_data->bss;
2324 else if (ifmgd->assoc_data)
2325 cbss = ifmgd->assoc_data->bss;
2326 else
a619a4c0
JO		 2327 return NULL;
2328
9caf0364 2329 rcu_read_lock();
d9b3b28b 2330 ssid = ieee80211_bss_get_ie(cbss, WLAN_EID_SSID);
88c868c4
SG		 2331 if (WARN_ON_ONCE(ssid == NULL))
2332 ssid_len = 0;
2333 else
2334 ssid_len = ssid[1];
2335
a344d677 2336 skb = ieee80211_build_probe_req(sdata, sdata->vif.addr, cbss->bssid,
55de908a 2337 (u32) -1, cbss->channel,
6b77863b 2338 ssid + 2, ssid_len,
85a237fe 2339 NULL, 0, true);
9caf0364 2340 rcu_read_unlock();
a619a4c0
JO		 2341
2342 return skb;
2343}
2344EXPORT_SYMBOL(ieee80211_ap_probereq_get);
2345
eef9e54c 2346static void __ieee80211_disconnect(struct ieee80211_sub_if_data *sdata)
1e4dcd01 2347{
59af6928 2348 struct ieee80211_local *local = sdata->local;
1e4dcd01 2349 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
6ae16775 2350 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
1e4dcd01 2351
8d61ffa5 2352 sdata_lock(sdata);
1e4dcd01 2353 if (!ifmgd->associated) {
8d61ffa5 2354 sdata_unlock(sdata);
1e4dcd01
JO		 2355 return;
2356 }
2357
37ad3888
JB		 2358 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
2359 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY,
eef9e54c 2360 true, frame_buf);
59af6928 2361 mutex_lock(&local->mtx);
7578d575 2362 sdata->vif.csa_active = false;
0c21e632 2363 ifmgd->csa_waiting_bcn = false;
a46992b4
LC		 2364 if (sdata->csa_block_tx) {
2365 ieee80211_wake_vif_queues(local, sdata,
2366 IEEE80211_QUEUE_STOP_REASON_CSA);
2367 sdata->csa_block_tx = false;
2368 }
59af6928 2369 mutex_unlock(&local->mtx);
7da7cc1d 2370
6ff57cf8
JB		 2371 cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf,
2372 IEEE80211_DEAUTH_FRAME_LEN);
8d61ffa5 2373 sdata_unlock(sdata);
1e4dcd01
JO		 2374}
2375
cc74c0c7 2376static void ieee80211_beacon_connection_loss_work(struct work_struct *work)
b291ba11
JB		 2377{
2378 struct ieee80211_sub_if_data *sdata =
2379 container_of(work, struct ieee80211_sub_if_data,
1e4dcd01 2380 u.mgd.beacon_connection_loss_work);
a85e1d55
PS		 2381 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2382 struct sta_info *sta;
2383
2384 if (ifmgd->associated) {
30fa9047 2385 rcu_read_lock();
a85e1d55
PS		 2386 sta = sta_info_get(sdata, ifmgd->bssid);
2387 if (sta)
2388 sta->beacon_loss_count++;
30fa9047 2389 rcu_read_unlock();
a85e1d55 2390 }
b291ba11 2391
682bd38b 2392 if (ifmgd->connection_loss) {
882a7c69
JB		 2393 sdata_info(sdata, "Connection to AP %pM lost\n",
2394 ifmgd->bssid);
eef9e54c 2395 __ieee80211_disconnect(sdata);
882a7c69 2396 } else {
1e4dcd01 2397 ieee80211_mgd_probe_ap(sdata, true);
882a7c69
JB		 2398 }
2399}
2400
2401static void ieee80211_csa_connection_drop_work(struct work_struct *work)
2402{
2403 struct ieee80211_sub_if_data *sdata =
2404 container_of(work, struct ieee80211_sub_if_data,
2405 u.mgd.csa_connection_drop_work);
2406
eef9e54c 2407 __ieee80211_disconnect(sdata);
b291ba11
JB		 2408}
2409
04de8381
KV		 2410void ieee80211_beacon_loss(struct ieee80211_vif *vif)
2411{
2412 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
1e4dcd01 2413 struct ieee80211_hw *hw = &sdata->local->hw;
04de8381 2414
b5878a2d
JB		 2415 trace_api_beacon_loss(sdata);
2416
682bd38b 2417 sdata->u.mgd.connection_loss = false;
1e4dcd01 2418 ieee80211_queue_work(hw, &sdata->u.mgd.beacon_connection_loss_work);
04de8381
KV		 2419}
2420EXPORT_SYMBOL(ieee80211_beacon_loss);
2421
1e4dcd01
JO		 2422void ieee80211_connection_loss(struct ieee80211_vif *vif)
2423{
2424 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2425 struct ieee80211_hw *hw = &sdata->local->hw;
2426
b5878a2d
JB		 2427 trace_api_connection_loss(sdata);
2428
682bd38b 2429 sdata->u.mgd.connection_loss = true;
1e4dcd01
JO		 2430 ieee80211_queue_work(hw, &sdata->u.mgd.beacon_connection_loss_work);
2431}
2432EXPORT_SYMBOL(ieee80211_connection_loss);
2433
2434
66e67e41
JB		 2435static void ieee80211_destroy_auth_data(struct ieee80211_sub_if_data *sdata,
2436 bool assoc)
2437{
2438 struct ieee80211_mgd_auth_data *auth_data = sdata->u.mgd.auth_data;
2439
8d61ffa5 2440 sdata_assert_lock(sdata);
66e67e41 2441
66e67e41
JB		 2442 if (!assoc) {
2443 sta_info_destroy_addr(sdata, auth_data->bss->bssid);
2444
2445 memset(sdata->u.mgd.bssid, 0, ETH_ALEN);
2446 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID);
028e8da0 2447 sdata->u.mgd.flags = 0;
34a3740d 2448 mutex_lock(&sdata->local->mtx);
55de908a 2449 ieee80211_vif_release_channel(sdata);
34a3740d 2450 mutex_unlock(&sdata->local->mtx);
66e67e41
JB		 2451 }
2452
5b112d3d 2453 cfg80211_put_bss(sdata->local->hw.wiphy, auth_data->bss);
66e67e41
JB		 2454 kfree(auth_data);
2455 sdata->u.mgd.auth_data = NULL;
2456}
2457
2458static void ieee80211_auth_challenge(struct ieee80211_sub_if_data *sdata,
2459 struct ieee80211_mgmt *mgmt, size_t len)
2460{
1672c0e3 2461 struct ieee80211_local *local = sdata->local;
66e67e41
JB		 2462 struct ieee80211_mgd_auth_data *auth_data = sdata->u.mgd.auth_data;
2463 u8 *pos;
2464 struct ieee802_11_elems elems;
1672c0e3 2465 u32 tx_flags = 0;
66e67e41
JB		 2466
2467 pos = mgmt->u.auth.variable;
b2e506bf 2468 ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), false, &elems);
66e67e41
JB		 2469 if (!elems.challenge)
2470 return;
2471 auth_data->expected_transaction = 4;
a1845fc7 2472 drv_mgd_prepare_tx(sdata->local, sdata);
1672c0e3
JB		 2473 if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)
2474 tx_flags = IEEE80211_TX_CTL_REQ_TX_STATUS |
2475 IEEE80211_TX_INTFL_MLME_CONN_TX;
700e8ea6 2476 ieee80211_send_auth(sdata, 3, auth_data->algorithm, 0,
66e67e41
JB		 2477 elems.challenge - 2, elems.challenge_len + 2,
2478 auth_data->bss->bssid, auth_data->bss->bssid,
2479 auth_data->key, auth_data->key_len,
1672c0e3 2480 auth_data->key_idx, tx_flags);
66e67e41
JB		 2481}
2482
8d61ffa5
JB		 2483static void ieee80211_rx_mgmt_auth(struct ieee80211_sub_if_data *sdata,
2484 struct ieee80211_mgmt *mgmt, size_t len)
66e67e41
JB		 2485{
2486 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2487 u8 bssid[ETH_ALEN];
2488 u16 auth_alg, auth_transaction, status_code;
2489 struct sta_info *sta;
2490
8d61ffa5 2491 sdata_assert_lock(sdata);
66e67e41
JB		 2492
2493 if (len < 24 + 6)
8d61ffa5 2494 return;
66e67e41
JB		 2495
2496 if (!ifmgd->auth_data || ifmgd->auth_data->done)
8d61ffa5 2497 return;
66e67e41
JB		 2498
2499 memcpy(bssid, ifmgd->auth_data->bss->bssid, ETH_ALEN);
2500
b203ca39 2501 if (!ether_addr_equal(bssid, mgmt->bssid))
8d61ffa5 2502 return;
66e67e41
JB		 2503
2504 auth_alg = le16_to_cpu(mgmt->u.auth.auth_alg);
2505 auth_transaction = le16_to_cpu(mgmt->u.auth.auth_transaction);
2506 status_code = le16_to_cpu(mgmt->u.auth.status_code);
2507
2508 if (auth_alg != ifmgd->auth_data->algorithm ||
0f4126e8
JM		 2509 auth_transaction != ifmgd->auth_data->expected_transaction) {
2510 sdata_info(sdata, "%pM unexpected authentication state: alg %d (expected %d) transact %d (expected %d)\n",
2511 mgmt->sa, auth_alg, ifmgd->auth_data->algorithm,
2512 auth_transaction,
2513 ifmgd->auth_data->expected_transaction);
8d61ffa5 2514 return;
0f4126e8 2515 }
66e67e41
JB		 2516
2517 if (status_code != WLAN_STATUS_SUCCESS) {
bdcbd8e0
JB		 2518 sdata_info(sdata, "%pM denied authentication (status %d)\n",
2519 mgmt->sa, status_code);
dac211ec 2520 ieee80211_destroy_auth_data(sdata, false);
6ff57cf8 2521 cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len);
8d61ffa5 2522 return;
66e67e41
JB		 2523 }
2524
2525 switch (ifmgd->auth_data->algorithm) {
2526 case WLAN_AUTH_OPEN:
2527 case WLAN_AUTH_LEAP:
2528 case WLAN_AUTH_FT:
6b8ece3a 2529 case WLAN_AUTH_SAE:
66e67e41
JB		 2530 break;
2531 case WLAN_AUTH_SHARED_KEY:
2532 if (ifmgd->auth_data->expected_transaction != 4) {
2533 ieee80211_auth_challenge(sdata, mgmt, len);
2534 /* need another frame */
8d61ffa5 2535 return;
66e67e41
JB		 2536 }
2537 break;
2538 default:
2539 WARN_ONCE(1, "invalid auth alg %d",
2540 ifmgd->auth_data->algorithm);
8d61ffa5 2541 return;
66e67e41
JB		 2542 }
2543
bdcbd8e0 2544 sdata_info(sdata, "authenticated\n");
66e67e41
JB		 2545 ifmgd->auth_data->done = true;
2546 ifmgd->auth_data->timeout = jiffies + IEEE80211_AUTH_WAIT_ASSOC;
89afe614 2547 ifmgd->auth_data->timeout_started = true;
8d61ffa5 2548 run_again(sdata, ifmgd->auth_data->timeout);
66e67e41 2549
6b8ece3a
JM		 2550 if (ifmgd->auth_data->algorithm == WLAN_AUTH_SAE &&
2551 ifmgd->auth_data->expected_transaction != 2) {
2552 /*
2553 * Report auth frame to user space for processing since another
2554 * round of Authentication frames is still needed.
2555 */
6ff57cf8 2556 cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len);
8d61ffa5 2557 return;
6b8ece3a
JM		 2558 }
2559
66e67e41
JB		 2560 /* move station state to auth */
2561 mutex_lock(&sdata->local->sta_mtx);
2562 sta = sta_info_get(sdata, bssid);
2563 if (!sta) {
2564 WARN_ONCE(1, "%s: STA %pM not found", sdata->name, bssid);
2565 goto out_err;
2566 }
2567 if (sta_info_move_state(sta, IEEE80211_STA_AUTH)) {
bdcbd8e0 2568 sdata_info(sdata, "failed moving %pM to auth\n", bssid);
66e67e41
JB		 2569 goto out_err;
2570 }
2571 mutex_unlock(&sdata->local->sta_mtx);
2572
6ff57cf8 2573 cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len);
8d61ffa5 2574 return;
66e67e41
JB		 2575 out_err:
2576 mutex_unlock(&sdata->local->sta_mtx);
2577 /* ignore frame -- wait for timeout */
66e67e41
JB		 2578}
2579
dfa1ad29
CO		 2580#define case_WLAN(type) \
2581 case WLAN_REASON_##type: return #type
2582
2583static const char *ieee80211_get_reason_code_string(u16 reason_code)
2584{
2585 switch (reason_code) {
2586 case_WLAN(UNSPECIFIED);
2587 case_WLAN(PREV_AUTH_NOT_VALID);
2588 case_WLAN(DEAUTH_LEAVING);
2589 case_WLAN(DISASSOC_DUE_TO_INACTIVITY);
2590 case_WLAN(DISASSOC_AP_BUSY);
2591 case_WLAN(CLASS2_FRAME_FROM_NONAUTH_STA);
2592 case_WLAN(CLASS3_FRAME_FROM_NONASSOC_STA);
2593 case_WLAN(DISASSOC_STA_HAS_LEFT);
2594 case_WLAN(STA_REQ_ASSOC_WITHOUT_AUTH);
2595 case_WLAN(DISASSOC_BAD_POWER);
2596 case_WLAN(DISASSOC_BAD_SUPP_CHAN);
2597 case_WLAN(INVALID_IE);
2598 case_WLAN(MIC_FAILURE);
2599 case_WLAN(4WAY_HANDSHAKE_TIMEOUT);
2600 case_WLAN(GROUP_KEY_HANDSHAKE_TIMEOUT);
2601 case_WLAN(IE_DIFFERENT);
2602 case_WLAN(INVALID_GROUP_CIPHER);
2603 case_WLAN(INVALID_PAIRWISE_CIPHER);
2604 case_WLAN(INVALID_AKMP);
2605 case_WLAN(UNSUPP_RSN_VERSION);
2606 case_WLAN(INVALID_RSN_IE_CAP);
2607 case_WLAN(IEEE8021X_FAILED);
2608 case_WLAN(CIPHER_SUITE_REJECTED);
2609 case_WLAN(DISASSOC_UNSPECIFIED_QOS);
2610 case_WLAN(DISASSOC_QAP_NO_BANDWIDTH);
2611 case_WLAN(DISASSOC_LOW_ACK);
2612 case_WLAN(DISASSOC_QAP_EXCEED_TXOP);
2613 case_WLAN(QSTA_LEAVE_QBSS);
2614 case_WLAN(QSTA_NOT_USE);
2615 case_WLAN(QSTA_REQUIRE_SETUP);
2616 case_WLAN(QSTA_TIMEOUT);
2617 case_WLAN(QSTA_CIPHER_NOT_SUPP);
2618 case_WLAN(MESH_PEER_CANCELED);
2619 case_WLAN(MESH_MAX_PEERS);
2620 case_WLAN(MESH_CONFIG);
2621 case_WLAN(MESH_CLOSE);
2622 case_WLAN(MESH_MAX_RETRIES);
2623 case_WLAN(MESH_CONFIRM_TIMEOUT);
2624 case_WLAN(MESH_INVALID_GTK);
2625 case_WLAN(MESH_INCONSISTENT_PARAM);
2626 case_WLAN(MESH_INVALID_SECURITY);
2627 case_WLAN(MESH_PATH_ERROR);
2628 case_WLAN(MESH_PATH_NOFORWARD);
2629 case_WLAN(MESH_PATH_DEST_UNREACHABLE);
2630 case_WLAN(MAC_EXISTS_IN_MBSS);
2631 case_WLAN(MESH_CHAN_REGULATORY);
2632 case_WLAN(MESH_CHAN);
2633 default: return "<unknown>";
2634 }
2635}
66e67e41 2636
8d61ffa5
JB		 2637static void ieee80211_rx_mgmt_deauth(struct ieee80211_sub_if_data *sdata,
2638 struct ieee80211_mgmt *mgmt, size_t len)
f0706e82 2639{
46900298 2640 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
77fdaa12 2641 const u8 *bssid = NULL;
f0706e82
JB		 2642 u16 reason_code;
2643
8d61ffa5 2644 sdata_assert_lock(sdata);
66e67e41 2645
f4ea83dd 2646 if (len < 24 + 2)
8d61ffa5 2647 return;
f0706e82 2648
66e67e41 2649 if (!ifmgd->associated ||
b203ca39 2650 !ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid))
8d61ffa5 2651 return;
77fdaa12 2652
0c1ad2ca 2653 bssid = ifmgd->associated->bssid;
f0706e82
JB		 2654
2655 reason_code = le16_to_cpu(mgmt->u.deauth.reason_code);
2656
dfa1ad29
CO		 2657 sdata_info(sdata, "deauthenticated from %pM (Reason: %u=%s)\n",
2658 bssid, reason_code, ieee80211_get_reason_code_string(reason_code));
77fdaa12 2659
37ad3888
JB		 2660 ieee80211_set_disassoc(sdata, 0, 0, false, NULL);
2661
6ff57cf8 2662 cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len);
f0706e82
JB		 2663}
2664
2665
8d61ffa5
JB		 2666static void ieee80211_rx_mgmt_disassoc(struct ieee80211_sub_if_data *sdata,
2667 struct ieee80211_mgmt *mgmt, size_t len)
f0706e82 2668{
46900298 2669 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
f0706e82
JB		 2670 u16 reason_code;
2671
8d61ffa5 2672 sdata_assert_lock(sdata);
77fdaa12 2673
66e67e41 2674 if (len < 24 + 2)
8d61ffa5 2675 return;
77fdaa12 2676
66e67e41 2677 if (!ifmgd->associated ||
b203ca39 2678 !ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid))
8d61ffa5 2679 return;
f0706e82
JB		 2680
2681 reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code);
2682
bdcbd8e0
JB		 2683 sdata_info(sdata, "disassociated from %pM (Reason: %u)\n",
2684 mgmt->sa, reason_code);
f0706e82 2685
37ad3888
JB		 2686 ieee80211_set_disassoc(sdata, 0, 0, false, NULL);
2687
6ff57cf8 2688 cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len);
f0706e82
JB		 2689}
2690
c74d084f
CL		 2691static void ieee80211_get_rates(struct ieee80211_supported_band *sband,
2692 u8 *supp_rates, unsigned int supp_rates_len,
2693 u32 *rates, u32 *basic_rates,
2694 bool *have_higher_than_11mbit,
2103dec1
SW		 2695 int *min_rate, int *min_rate_index,
2696 int shift, u32 rate_flags)
c74d084f
CL		 2697{
2698 int i, j;
2699
2700 for (i = 0; i < supp_rates_len; i++) {
2103dec1 2701 int rate = supp_rates[i] & 0x7f;
c74d084f
CL		 2702 bool is_basic = !!(supp_rates[i] & 0x80);
2703
2103dec1 2704 if ((rate * 5 * (1 << shift)) > 110)
c74d084f
CL		 2705 *have_higher_than_11mbit = true;
2706
2707 /*
2708 * BSS_MEMBERSHIP_SELECTOR_HT_PHY is defined in 802.11n-2009
2709 * 7.3.2.2 as a magic value instead of a rate. Hence, skip it.
2710 *
2711 * Note: Even through the membership selector and the basic
2712 * rate flag share the same bit, they are not exactly
2713 * the same.
2714 */
2715 if (!!(supp_rates[i] & 0x80) &&
2716 (supp_rates[i] & 0x7f) == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
2717 continue;
2718
2719 for (j = 0; j < sband->n_bitrates; j++) {
2103dec1
SW		 2720 struct ieee80211_rate *br;
2721 int brate;
2722
2723 br = &sband->bitrates[j];
2724 if ((rate_flags & br->flags) != rate_flags)
2725 continue;
2726
2727 brate = DIV_ROUND_UP(br->bitrate, (1 << shift) * 5);
2728 if (brate == rate) {
c74d084f
CL		 2729 *rates |= BIT(j);
2730 if (is_basic)
2731 *basic_rates |= BIT(j);
2103dec1
SW		 2732 if ((rate * 5) < *min_rate) {
2733 *min_rate = rate * 5;
c74d084f
CL		 2734 *min_rate_index = j;
2735 }
2736 break;
2737 }
2738 }
2739 }
2740}
f0706e82 2741
66e67e41
JB		 2742static void ieee80211_destroy_assoc_data(struct ieee80211_sub_if_data *sdata,
2743 bool assoc)
2744{
2745 struct ieee80211_mgd_assoc_data *assoc_data = sdata->u.mgd.assoc_data;
2746
8d61ffa5 2747 sdata_assert_lock(sdata);
66e67e41 2748
66e67e41
JB		 2749 if (!assoc) {
2750 sta_info_destroy_addr(sdata, assoc_data->bss->bssid);
2751
2752 memset(sdata->u.mgd.bssid, 0, ETH_ALEN);
2753 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID);
028e8da0 2754 sdata->u.mgd.flags = 0;
34a3740d 2755 mutex_lock(&sdata->local->mtx);
55de908a 2756 ieee80211_vif_release_channel(sdata);
34a3740d 2757 mutex_unlock(&sdata->local->mtx);
66e67e41
JB		 2758 }
2759
2760 kfree(assoc_data);
2761 sdata->u.mgd.assoc_data = NULL;
2762}
2763
2764static bool ieee80211_assoc_success(struct ieee80211_sub_if_data *sdata,
2765 struct cfg80211_bss *cbss,
af6b6374 2766 struct ieee80211_mgmt *mgmt, size_t len)
f0706e82 2767{
46900298 2768 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
471b3efd 2769 struct ieee80211_local *local = sdata->local;
8318d78a 2770 struct ieee80211_supported_band *sband;
f0706e82 2771 struct sta_info *sta;
af6b6374 2772 u8 *pos;
af6b6374 2773 u16 capab_info, aid;
f0706e82 2774 struct ieee802_11_elems elems;
bda3933a 2775 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
35d865af
JB		 2776 const struct cfg80211_bss_ies *bss_ies = NULL;
2777 struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data;
ae5eb026 2778 u32 changed = 0;
c74d084f 2779 int err;
35d865af 2780 bool ret;
f0706e82 2781
af6b6374 2782 /* AssocResp and ReassocResp have identical structure */
f0706e82 2783
f0706e82 2784 aid = le16_to_cpu(mgmt->u.assoc_resp.aid);
af6b6374 2785 capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info);
f0706e82 2786
1dd84aa2 2787 if ((aid & (BIT(15) | BIT(14))) != (BIT(15) | BIT(14)))
bdcbd8e0
JB		 2788 sdata_info(sdata, "invalid AID value 0x%x; bits 15:14 not set\n",
2789 aid);
1dd84aa2
JB		 2790 aid &= ~(BIT(15) | BIT(14));
2791
05cb9108
JB		 2792 ifmgd->broken_ap = false;
2793
2794 if (aid == 0 || aid > IEEE80211_MAX_AID) {
bdcbd8e0
JB		 2795 sdata_info(sdata, "invalid AID value %d (out of range), turn off PS\n",
2796 aid);
05cb9108
JB		 2797 aid = 0;
2798 ifmgd->broken_ap = true;
2799 }
2800
af6b6374 2801 pos = mgmt->u.assoc_resp.variable;
b2e506bf 2802 ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), false, &elems);
af6b6374 2803
f0706e82 2804 if (!elems.supp_rates) {
bdcbd8e0 2805 sdata_info(sdata, "no SuppRates element in AssocResp\n");
af6b6374 2806 return false;
f0706e82
JB		 2807 }
2808
46900298 2809 ifmgd->aid = aid;
9041c1fa
AN		 2810 ifmgd->tdls_chan_switch_prohibited =
2811 elems.ext_capab && elems.ext_capab_len >= 5 &&
2812 (elems.ext_capab[4] & WLAN_EXT_CAPA5_TDLS_CH_SW_PROHIBITED);
f0706e82 2813
35d865af
JB		 2814 /*
2815 * Some APs are erroneously not including some information in their
2816 * (re)association response frames. Try to recover by using the data
2817 * from the beacon or probe response. This seems to afflict mobile
2818 * 2G/3G/4G wifi routers, reported models include the "Onda PN51T",
2819 * "Vodafone PocketWiFi 2", "ZTE MF60" and a similar T-Mobile device.
2820 */
2821 if ((assoc_data->wmm && !elems.wmm_param) ||
2822 (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT) &&
2823 (!elems.ht_cap_elem || !elems.ht_operation)) ||
2824 (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) &&
2825 (!elems.vht_cap_elem || !elems.vht_operation))) {
2826 const struct cfg80211_bss_ies *ies;
2827 struct ieee802_11_elems bss_elems;
2828
2829 rcu_read_lock();
2830 ies = rcu_dereference(cbss->ies);
2831 if (ies)
2832 bss_ies = kmemdup(ies, sizeof(*ies) + ies->len,
2833 GFP_ATOMIC);
2834 rcu_read_unlock();
2835 if (!bss_ies)
2836 return false;
2837
2838 ieee802_11_parse_elems(bss_ies->data, bss_ies->len,
2839 false, &bss_elems);
2840 if (assoc_data->wmm &&
2841 !elems.wmm_param && bss_elems.wmm_param) {
2842 elems.wmm_param = bss_elems.wmm_param;
2843 sdata_info(sdata,
2844 "AP bug: WMM param missing from AssocResp\n");
2845 }
2846
2847 /*
2848 * Also check if we requested HT/VHT, otherwise the AP doesn't
2849 * have to include the IEs in the (re)association response.
2850 */
2851 if (!elems.ht_cap_elem && bss_elems.ht_cap_elem &&
2852 !(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) {
2853 elems.ht_cap_elem = bss_elems.ht_cap_elem;
2854 sdata_info(sdata,
2855 "AP bug: HT capability missing from AssocResp\n");
2856 }
2857 if (!elems.ht_operation && bss_elems.ht_operation &&
2858 !(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) {
2859 elems.ht_operation = bss_elems.ht_operation;
2860 sdata_info(sdata,
2861 "AP bug: HT operation missing from AssocResp\n");
2862 }
2863 if (!elems.vht_cap_elem && bss_elems.vht_cap_elem &&
2864 !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) {
2865 elems.vht_cap_elem = bss_elems.vht_cap_elem;
2866 sdata_info(sdata,
2867 "AP bug: VHT capa missing from AssocResp\n");
2868 }
2869 if (!elems.vht_operation && bss_elems.vht_operation &&
2870 !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) {
2871 elems.vht_operation = bss_elems.vht_operation;
2872 sdata_info(sdata,
2873 "AP bug: VHT operation missing from AssocResp\n");
2874 }
2875 }
2876
30eb1dc2
JB		 2877 /*
2878 * We previously checked these in the beacon/probe response, so
2879 * they should be present here. This is just a safety net.
2880 */
2881 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT) &&
2882 (!elems.wmm_param || !elems.ht_cap_elem || !elems.ht_operation)) {
2883 sdata_info(sdata,
35d865af
JB		 2884 "HT AP is missing WMM params or HT capability/operation\n");
2885 ret = false;
2886 goto out;
30eb1dc2
JB		 2887 }
2888
2889 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) &&
2890 (!elems.vht_cap_elem || !elems.vht_operation)) {
2891 sdata_info(sdata,
35d865af
JB		 2892 "VHT AP is missing VHT capability/operation\n");
2893 ret = false;
2894 goto out;
30eb1dc2
JB		 2895 }
2896
2a33bee2
GE		 2897 mutex_lock(&sdata->local->sta_mtx);
2898 /*
2899 * station info was already allocated and inserted before
2900 * the association and should be available to us
2901 */
7852e361 2902 sta = sta_info_get(sdata, cbss->bssid);
2a33bee2
GE		 2903 if (WARN_ON(!sta)) {
2904 mutex_unlock(&sdata->local->sta_mtx);
35d865af
JB		 2905 ret = false;
2906 goto out;
77fdaa12 2907 }
05e5e883 2908
55de908a 2909 sband = local->hw.wiphy->bands[ieee80211_get_sdata_band(sdata)];
f709fc69 2910
30eb1dc2 2911 /* Set up internal HT/VHT capabilities */
a8243b72 2912 if (elems.ht_cap_elem && !(ifmgd->flags & IEEE80211_STA_DISABLE_HT))
ef96a842 2913 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
e1a0c6b3 2914 elems.ht_cap_elem, sta);
64f68e5d 2915
818255ea
MP		 2916 if (elems.vht_cap_elem && !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
2917 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
4a34215e 2918 elems.vht_cap_elem, sta);
818255ea 2919
30eb1dc2
JB		 2920 /*
2921 * Some APs, e.g. Netgear WNDR3700, report invalid HT operation data
2922 * in their association response, so ignore that data for our own
2923 * configuration. If it changed since the last beacon, we'll get the
2924 * next beacon and update then.
2925 */
1128958d 2926
bee7f586
JB		 2927 /*
2928 * If an operating mode notification IE is present, override the
2929 * NSS calculation (that would be done in rate_control_rate_init())
2930 * and use the # of streams from that element.
2931 */
2932 if (elems.opmode_notif &&
2933 !(*elems.opmode_notif & IEEE80211_OPMODE_NOTIF_RX_NSS_TYPE_BF)) {
2934 u8 nss;
2935
2936 nss = *elems.opmode_notif & IEEE80211_OPMODE_NOTIF_RX_NSS_MASK;
2937 nss >>= IEEE80211_OPMODE_NOTIF_RX_NSS_SHIFT;
2938 nss += 1;
2939 sta->sta.rx_nss = nss;
2940 }
2941
4b7679a5 2942 rate_control_rate_init(sta);
f0706e82 2943
46900298 2944 if (ifmgd->flags & IEEE80211_STA_MFP_ENABLED)
c2c98fde 2945 set_sta_flag(sta, WLAN_STA_MFP);
5394af4d 2946
a74a8c84 2947 sta->sta.wme = elems.wmm_param;
ddf4ac53 2948
3e4d40fa 2949 err = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
c8987876
JB		 2950 if (!err && !(ifmgd->flags & IEEE80211_STA_CONTROL_PORT))
2951 err = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
2952 if (err) {
bdcbd8e0
JB		 2953 sdata_info(sdata,
2954 "failed to move station %pM to desired state\n",
2955 sta->sta.addr);
c8987876
JB		 2956 WARN_ON(__sta_info_destroy(sta));
2957 mutex_unlock(&sdata->local->sta_mtx);
35d865af
JB		 2958 ret = false;
2959 goto out;
c8987876
JB		 2960 }
2961
7852e361 2962 mutex_unlock(&sdata->local->sta_mtx);
ddf4ac53 2963
f2176d72
JO		 2964 /*
2965 * Always handle WMM once after association regardless
2966 * of the first value the AP uses. Setting -1 here has
2967 * that effect because the AP values is an unsigned
2968 * 4-bit value.
2969 */
2970 ifmgd->wmm_last_param_set = -1;
2971
095d81ce 2972 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_WMM) && elems.wmm_param)
4ced3f74 2973 ieee80211_sta_wmm_params(local, sdata, elems.wmm_param,
60f8b39c 2974 elems.wmm_param_len);
aa837e1d 2975 else
3abead59
JB		 2976 ieee80211_set_wmm_default(sdata, false);
2977 changed |= BSS_CHANGED_QOS;
f0706e82 2978
60f8b39c
JB		 2979 /* set AID and assoc capability,
2980 * ieee80211_set_associated() will tell the driver */
2981 bss_conf->aid = aid;
2982 bss_conf->assoc_capability = capab_info;
0c1ad2ca 2983 ieee80211_set_associated(sdata, cbss, changed);
f0706e82 2984
d524215f
FF		 2985 /*
2986 * If we're using 4-addr mode, let the AP know that we're
2987 * doing so, so that it can create the STA VLAN on its side
2988 */
2989 if (ifmgd->use_4addr)
2990 ieee80211_send_4addr_nullfunc(local, sdata);
2991
15b7b062 2992 /*
b291ba11
JB		 2993 * Start timer to probe the connection to the AP now.
2994 * Also start the timer that will detect beacon loss.
15b7b062 2995 */
b291ba11 2996 ieee80211_sta_rx_notify(sdata, (struct ieee80211_hdr *)mgmt);
d3a910a8 2997 ieee80211_sta_reset_beacon_monitor(sdata);
15b7b062 2998
35d865af
JB		 2999 ret = true;
3000 out:
3001 kfree(bss_ies);
3002 return ret;
f0706e82
JB		 3003}
3004
8d61ffa5
JB		 3005static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata,
3006 struct ieee80211_mgmt *mgmt,
3007 size_t len)
66e67e41
JB		 3008{
3009 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3010 struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data;
3011 u16 capab_info, status_code, aid;
3012 struct ieee802_11_elems elems;
b0b6aa2c 3013 int ac, uapsd_queues = -1;
66e67e41
JB		 3014 u8 *pos;
3015 bool reassoc;
8d61ffa5 3016 struct cfg80211_bss *bss;
66e67e41 3017
8d61ffa5 3018 sdata_assert_lock(sdata);
66e67e41
JB		 3019
3020 if (!assoc_data)
8d61ffa5 3021 return;
b203ca39 3022 if (!ether_addr_equal(assoc_data->bss->bssid, mgmt->bssid))
8d61ffa5 3023 return;
66e67e41
JB		 3024
3025 /*
3026 * AssocResp and ReassocResp have identical structure, so process both
3027 * of them in this function.
3028 */
3029
3030 if (len < 24 + 6)
8d61ffa5 3031 return;
66e67e41
JB		 3032
3033 reassoc = ieee80211_is_reassoc_req(mgmt->frame_control);
3034 capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info);
3035 status_code = le16_to_cpu(mgmt->u.assoc_resp.status_code);
3036 aid = le16_to_cpu(mgmt->u.assoc_resp.aid);
3037
bdcbd8e0
JB		 3038 sdata_info(sdata,
3039 "RX %sssocResp from %pM (capab=0x%x status=%d aid=%d)\n",
3040 reassoc ? "Rea" : "A", mgmt->sa,
3041 capab_info, status_code, (u16)(aid & ~(BIT(15) | BIT(14))));
66e67e41
JB		 3042
3043 pos = mgmt->u.assoc_resp.variable;
b2e506bf 3044 ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), false, &elems);
66e67e41
JB		 3045
3046 if (status_code == WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY &&
79ba1d89
JB		 3047 elems.timeout_int &&
3048 elems.timeout_int->type == WLAN_TIMEOUT_ASSOC_COMEBACK) {
66e67e41 3049 u32 tu, ms;
79ba1d89 3050 tu = le32_to_cpu(elems.timeout_int->value);
66e67e41 3051 ms = tu * 1024 / 1000;
bdcbd8e0
JB		 3052 sdata_info(sdata,
3053 "%pM rejected association temporarily; comeback duration %u TU (%u ms)\n",
3054 mgmt->sa, tu, ms);
66e67e41 3055 assoc_data->timeout = jiffies + msecs_to_jiffies(ms);
89afe614 3056 assoc_data->timeout_started = true;
66e67e41 3057 if (ms > IEEE80211_ASSOC_TIMEOUT)
8d61ffa5
JB		 3058 run_again(sdata, assoc_data->timeout);
3059 return;
66e67e41
JB		 3060 }
3061
8d61ffa5 3062 bss = assoc_data->bss;
66e67e41
JB		 3063
3064 if (status_code != WLAN_STATUS_SUCCESS) {
bdcbd8e0
JB		 3065 sdata_info(sdata, "%pM denied association (code=%d)\n",
3066 mgmt->sa, status_code);
66e67e41
JB		 3067 ieee80211_destroy_assoc_data(sdata, false);
3068 } else {
8d61ffa5 3069 if (!ieee80211_assoc_success(sdata, bss, mgmt, len)) {
66e67e41 3070 /* oops -- internal error -- send timeout for now */
10a9109f 3071 ieee80211_destroy_assoc_data(sdata, false);
959867fa 3072 cfg80211_assoc_timeout(sdata->dev, bss);
8d61ffa5 3073 return;
66e67e41 3074 }
635d999f 3075 sdata_info(sdata, "associated\n");
79ebfb85
JB		 3076
3077 /*
3078 * destroy assoc_data afterwards, as otherwise an idle
3079 * recalc after assoc_data is NULL but before associated
3080 * is set can cause the interface to go idle
3081 */
3082 ieee80211_destroy_assoc_data(sdata, true);
b0b6aa2c
EP		 3083
3084 /* get uapsd queues configuration */
3085 uapsd_queues = 0;
3086 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
3087 if (sdata->tx_conf[ac].uapsd)
3088 uapsd_queues |= BIT(ac);
66e67e41
JB		 3089 }
3090
b0b6aa2c 3091 cfg80211_rx_assoc_resp(sdata->dev, bss, (u8 *)mgmt, len, uapsd_queues);
66e67e41 3092}
8e3c1b77 3093
98c8fccf 3094static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
8e3c1b77 3095 struct ieee80211_mgmt *mgmt, size_t len,
98c8fccf 3096 struct ieee80211_rx_status *rx_status,
d45c4172 3097 struct ieee802_11_elems *elems)
98c8fccf
JB		 3098{
3099 struct ieee80211_local *local = sdata->local;
c2b13452 3100 struct ieee80211_bss *bss;
98c8fccf 3101 struct ieee80211_channel *channel;
56007a02 3102
8d61ffa5 3103 sdata_assert_lock(sdata);
b4f286a1 3104
3afc2167
EG		 3105 channel = ieee80211_get_channel(local->hw.wiphy, rx_status->freq);
3106 if (!channel)
98c8fccf
JB		 3107 return;
3108
98c8fccf 3109 bss = ieee80211_bss_info_update(local, rx_status, mgmt, len, elems,
d45c4172 3110 channel);
817cee76 3111 if (bss) {
817cee76 3112 sdata->vif.bss_conf.beacon_rate = bss->beacon_rate;
d2722f8b 3113 ieee80211_rx_bss_put(local, bss);
817cee76 3114 }
f0706e82
JB		 3115}
3116
3117
f698d856 3118static void ieee80211_rx_mgmt_probe_resp(struct ieee80211_sub_if_data *sdata,
af6b6374 3119 struct sk_buff *skb)
f0706e82 3120{
af6b6374 3121 struct ieee80211_mgmt *mgmt = (void *)skb->data;
15b7b062 3122 struct ieee80211_if_managed *ifmgd;
af6b6374
JB		 3123 struct ieee80211_rx_status *rx_status = (void *) skb->cb;
3124 size_t baselen, len = skb->len;
ae6a44e3
EK		 3125 struct ieee802_11_elems elems;
3126
15b7b062
KV		 3127 ifmgd = &sdata->u.mgd;
3128
8d61ffa5 3129 sdata_assert_lock(sdata);
77fdaa12 3130
b203ca39 3131 if (!ether_addr_equal(mgmt->da, sdata->vif.addr))
8e7cdbb6
TW		 3132 return; /* ignore ProbeResp to foreign address */
3133
ae6a44e3
EK		 3134 baselen = (u8 *) mgmt->u.probe_resp.variable - (u8 *) mgmt;
3135 if (baselen > len)
3136 return;
3137
3138 ieee802_11_parse_elems(mgmt->u.probe_resp.variable, len - baselen,
b2e506bf 3139 false, &elems);
ae6a44e3 3140
d45c4172 3141 ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems);
9859b81e 3142
77fdaa12 3143 if (ifmgd->associated &&
b203ca39 3144 ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid))
4e5ff376 3145 ieee80211_reset_ap_probe(sdata);
66e67e41
JB		 3146
3147 if (ifmgd->auth_data && !ifmgd->auth_data->bss->proberesp_ies &&
b203ca39 3148 ether_addr_equal(mgmt->bssid, ifmgd->auth_data->bss->bssid)) {
66e67e41 3149 /* got probe response, continue with auth */
bdcbd8e0 3150 sdata_info(sdata, "direct probe responded\n");
66e67e41
JB		 3151 ifmgd->auth_data->tries = 0;
3152 ifmgd->auth_data->timeout = jiffies;
89afe614 3153 ifmgd->auth_data->timeout_started = true;
8d61ffa5 3154 run_again(sdata, ifmgd->auth_data->timeout);
66e67e41 3155 }
f0706e82
JB		 3156}
3157
d91f36db
JB		 3158/*
3159 * This is the canonical list of information elements we care about,
3160 * the filter code also gives us all changes to the Microsoft OUI
c8d65917
SG		 3161 * (00:50:F2) vendor IE which is used for WMM which we need to track,
3162 * as well as the DTPC IE (part of the Cisco OUI) used for signaling
3163 * changes to requested client power.
d91f36db
JB		 3164 *
3165 * We implement beacon filtering in software since that means we can
3166 * avoid processing the frame here and in cfg80211, and userspace
3167 * will not be able to tell whether the hardware supports it or not.
3168 *
3169 * XXX: This list needs to be dynamic -- userspace needs to be able to
3170 * add items it requires. It also needs to be able to tell us to
3171 * look out for other vendor IEs.
3172 */
3173static const u64 care_about_ies =
1d4df3a5
JB		 3174 (1ULL << WLAN_EID_COUNTRY) |
3175 (1ULL << WLAN_EID_ERP_INFO) |
3176 (1ULL << WLAN_EID_CHANNEL_SWITCH) |
3177 (1ULL << WLAN_EID_PWR_CONSTRAINT) |
3178 (1ULL << WLAN_EID_HT_CAPABILITY) |
074d46d1 3179 (1ULL << WLAN_EID_HT_OPERATION);
d91f36db 3180
8d61ffa5
JB		 3181static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
3182 struct ieee80211_mgmt *mgmt, size_t len,
3183 struct ieee80211_rx_status *rx_status)
f0706e82 3184{
d91f36db 3185 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
17e4ec14 3186 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
f0706e82
JB		 3187 size_t baselen;
3188 struct ieee802_11_elems elems;
f698d856 3189 struct ieee80211_local *local = sdata->local;
55de908a
JB		 3190 struct ieee80211_chanctx_conf *chanctx_conf;
3191 struct ieee80211_channel *chan;
bee7f586 3192 struct sta_info *sta;
471b3efd 3193 u32 changed = 0;
f87ad637 3194 bool erp_valid;
7a5158ef 3195 u8 erp_value = 0;
d91f36db 3196 u32 ncrc;
77fdaa12 3197 u8 *bssid;
8d61ffa5 3198 u8 deauth_buf[IEEE80211_DEAUTH_FRAME_LEN];
77fdaa12 3199
8d61ffa5 3200 sdata_assert_lock(sdata);
f0706e82 3201
ae6a44e3
EK		 3202 /* Process beacon from the current BSS */
3203 baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt;
3204 if (baselen > len)
8d61ffa5 3205 return;
ae6a44e3 3206
55de908a
JB		 3207 rcu_read_lock();
3208 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3209 if (!chanctx_conf) {
3210 rcu_read_unlock();
8d61ffa5 3211 return;
55de908a
JB		 3212 }
3213
4bf88530 3214 if (rx_status->freq != chanctx_conf->def.chan->center_freq) {
55de908a 3215 rcu_read_unlock();
8d61ffa5 3216 return;
55de908a 3217 }
4bf88530 3218 chan = chanctx_conf->def.chan;
55de908a 3219 rcu_read_unlock();
f0706e82 3220
c65dd147 3221 if (ifmgd->assoc_data && ifmgd->assoc_data->need_beacon &&
b203ca39 3222 ether_addr_equal(mgmt->bssid, ifmgd->assoc_data->bss->bssid)) {
66e67e41 3223 ieee802_11_parse_elems(mgmt->u.beacon.variable,
b2e506bf 3224 len - baselen, false, &elems);
77fdaa12 3225
d45c4172 3226 ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems);
482a9c74
AB		 3227 if (elems.tim && !elems.parse_error) {
3228 const struct ieee80211_tim_ie *tim_ie = elems.tim;
3229 ifmgd->dtim_period = tim_ie->dtim_period;
3230 }
989c6505 3231 ifmgd->have_beacon = true;
c65dd147 3232 ifmgd->assoc_data->need_beacon = false;
ef429dad
JB		 3233 if (local->hw.flags & IEEE80211_HW_TIMING_BEACON_ONLY) {
3234 sdata->vif.bss_conf.sync_tsf =
3235 le64_to_cpu(mgmt->u.beacon.timestamp);
3236 sdata->vif.bss_conf.sync_device_ts =
3237 rx_status->device_timestamp;
3238 if (elems.tim)
3239 sdata->vif.bss_conf.sync_dtim_count =
3240 elems.tim->dtim_count;
3241 else
3242 sdata->vif.bss_conf.sync_dtim_count = 0;
3243 }
66e67e41
JB		 3244 /* continue assoc process */
3245 ifmgd->assoc_data->timeout = jiffies;
89afe614 3246 ifmgd->assoc_data->timeout_started = true;
8d61ffa5
JB		 3247 run_again(sdata, ifmgd->assoc_data->timeout);
3248 return;
66e67e41 3249 }
77fdaa12 3250
66e67e41 3251 if (!ifmgd->associated ||
b203ca39 3252 !ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid))
8d61ffa5 3253 return;
66e67e41 3254 bssid = ifmgd->associated->bssid;
f0706e82 3255
17e4ec14
JM		 3256 /* Track average RSSI from the Beacon frames of the current AP */
3257 ifmgd->last_beacon_signal = rx_status->signal;
3258 if (ifmgd->flags & IEEE80211_STA_RESET_SIGNAL_AVE) {
3259 ifmgd->flags &= ~IEEE80211_STA_RESET_SIGNAL_AVE;
3ba06c6f 3260 ifmgd->ave_beacon_signal = rx_status->signal * 16;
17e4ec14 3261 ifmgd->last_cqm_event_signal = 0;
391a200a 3262 ifmgd->count_beacon_signal = 1;
615f7b9b 3263 ifmgd->last_ave_beacon_signal = 0;
17e4ec14
JM		 3264 } else {
3265 ifmgd->ave_beacon_signal =
3266 (IEEE80211_SIGNAL_AVE_WEIGHT * rx_status->signal * 16 +
3267 (16 - IEEE80211_SIGNAL_AVE_WEIGHT) *
3268 ifmgd->ave_beacon_signal) / 16;
391a200a 3269 ifmgd->count_beacon_signal++;
17e4ec14 3270 }
615f7b9b
MV		 3271
3272 if (ifmgd->rssi_min_thold != ifmgd->rssi_max_thold &&
3273 ifmgd->count_beacon_signal >= IEEE80211_SIGNAL_AVE_MIN_COUNT) {
3274 int sig = ifmgd->ave_beacon_signal;
3275 int last_sig = ifmgd->last_ave_beacon_signal;
3276
3277 /*
3278 * if signal crosses either of the boundaries, invoke callback
3279 * with appropriate parameters
3280 */
3281 if (sig > ifmgd->rssi_max_thold &&
3282 (last_sig <= ifmgd->rssi_min_thold || last_sig == 0)) {
3283 ifmgd->last_ave_beacon_signal = sig;
887da917 3284 drv_rssi_callback(local, sdata, RSSI_EVENT_HIGH);
615f7b9b
MV		 3285 } else if (sig < ifmgd->rssi_min_thold &&
3286 (last_sig >= ifmgd->rssi_max_thold ||
3287 last_sig == 0)) {
3288 ifmgd->last_ave_beacon_signal = sig;
887da917 3289 drv_rssi_callback(local, sdata, RSSI_EVENT_LOW);
615f7b9b
MV		 3290 }
3291 }
3292
17e4ec14 3293 if (bss_conf->cqm_rssi_thold &&
391a200a 3294 ifmgd->count_beacon_signal >= IEEE80211_SIGNAL_AVE_MIN_COUNT &&
ea086359 3295 !(sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)) {
17e4ec14
JM		 3296 int sig = ifmgd->ave_beacon_signal / 16;
3297 int last_event = ifmgd->last_cqm_event_signal;
3298 int thold = bss_conf->cqm_rssi_thold;
3299 int hyst = bss_conf->cqm_rssi_hyst;
3300 if (sig < thold &&
3301 (last_event == 0 || sig < last_event - hyst)) {
3302 ifmgd->last_cqm_event_signal = sig;
3303 ieee80211_cqm_rssi_notify(
3304 &sdata->vif,
3305 NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW,
3306 GFP_KERNEL);
3307 } else if (sig > thold &&
3308 (last_event == 0 || sig > last_event + hyst)) {
3309 ifmgd->last_cqm_event_signal = sig;
3310 ieee80211_cqm_rssi_notify(
3311 &sdata->vif,
3312 NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH,
3313 GFP_KERNEL);
3314 }
3315 }
3316
392b9ffb 3317 if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL) {
bdcbd8e0 3318 mlme_dbg_ratelimited(sdata,
112c31f0 3319 "cancelling AP probe due to a received beacon\n");
392b9ffb 3320 ieee80211_reset_ap_probe(sdata);
92778180
JM		 3321 }
3322
b291ba11
JB		 3323 /*
3324 * Push the beacon loss detection into the future since
3325 * we are processing a beacon from the AP just now.
3326 */
d3a910a8 3327 ieee80211_sta_reset_beacon_monitor(sdata);
b291ba11 3328
d91f36db
JB		 3329 ncrc = crc32_be(0, (void *)&mgmt->u.beacon.beacon_int, 4);
3330 ncrc = ieee802_11_parse_elems_crc(mgmt->u.beacon.variable,
b2e506bf 3331 len - baselen, false, &elems,
d91f36db
JB		 3332 care_about_ies, ncrc);
3333
25c9c875 3334 if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) {
f87ad637
RR		 3335 bool directed_tim = ieee80211_check_tim(elems.tim,
3336 elems.tim_len,
3337 ifmgd->aid);
1fb3606b 3338 if (directed_tim) {
572e0012 3339 if (local->hw.conf.dynamic_ps_timeout > 0) {
70b12f26
RW		 3340 if (local->hw.conf.flags & IEEE80211_CONF_PS) {
3341 local->hw.conf.flags &= ~IEEE80211_CONF_PS;
3342 ieee80211_hw_config(local,
3343 IEEE80211_CONF_CHANGE_PS);
3344 }
572e0012 3345 ieee80211_send_nullfunc(local, sdata, 0);
6f0756a3 3346 } else if (!local->pspolling && sdata->u.mgd.powersave) {
572e0012
KV		 3347 local->pspolling = true;
3348
3349 /*
3350 * Here is assumed that the driver will be
3351 * able to send ps-poll frame and receive a
3352 * response even though power save mode is
3353 * enabled, but some drivers might require
3354 * to disable power save here. This needs
3355 * to be investigated.
3356 */
3357 ieee80211_send_pspoll(local, sdata);
3358 }
a97b77b9
VN		 3359 }
3360 }
7a5158ef 3361
488dd7b5 3362 if (sdata->vif.p2p) {
67baf663 3363 struct ieee80211_p2p_noa_attr noa = {};
488dd7b5
JB		 3364 int ret;
3365
3366 ret = cfg80211_get_p2p_attr(mgmt->u.beacon.variable,
3367 len - baselen,
3368 IEEE80211_P2P_ATTR_ABSENCE_NOTICE,
934457ee 3369 (u8 *) &noa, sizeof(noa));
67baf663
JD		 3370 if (ret >= 2) {
3371 if (sdata->u.mgd.p2p_noa_index != noa.index) {
3372 /* valid noa_attr and index changed */
3373 sdata->u.mgd.p2p_noa_index = noa.index;
3374 memcpy(&bss_conf->p2p_noa_attr, &noa, sizeof(noa));
3375 changed |= BSS_CHANGED_P2P_PS;
3376 /*
3377 * make sure we update all information, the CRC
3378 * mechanism doesn't look at P2P attributes.
3379 */
3380 ifmgd->beacon_crc_valid = false;
3381 }
3382 } else if (sdata->u.mgd.p2p_noa_index != -1) {
3383 /* noa_attr not found and we had valid noa_attr before */
3384 sdata->u.mgd.p2p_noa_index = -1;
3385 memset(&bss_conf->p2p_noa_attr, 0, sizeof(bss_conf->p2p_noa_attr));
488dd7b5 3386 changed |= BSS_CHANGED_P2P_PS;
488dd7b5
JB		 3387 ifmgd->beacon_crc_valid = false;
3388 }
3389 }
3390
0c21e632
LC		 3391 if (ifmgd->csa_waiting_bcn)
3392 ieee80211_chswitch_post_beacon(sdata);
3393
d8ec4433 3394 if (ncrc == ifmgd->beacon_crc && ifmgd->beacon_crc_valid)
8d61ffa5 3395 return;
30196673 3396 ifmgd->beacon_crc = ncrc;
d8ec4433 3397 ifmgd->beacon_crc_valid = true;
30196673 3398
d45c4172 3399 ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems);
7d25745d 3400
d70b7616 3401 ieee80211_sta_process_chanswitch(sdata, rx_status->mactime,
2ba45384 3402 rx_status->device_timestamp,
d70b7616
JB		 3403 &elems, true);
3404
095d81ce
JB		 3405 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_WMM) &&
3406 ieee80211_sta_wmm_params(local, sdata, elems.wmm_param,
7d25745d
JB		 3407 elems.wmm_param_len))
3408 changed |= BSS_CHANGED_QOS;
3409
c65dd147
EG		 3410 /*
3411 * If we haven't had a beacon before, tell the driver about the
ef429dad 3412 * DTIM period (and beacon timing if desired) now.
c65dd147 3413 */
989c6505 3414 if (!ifmgd->have_beacon) {
c65dd147
EG		 3415 /* a few bogus AP send dtim_period = 0 or no TIM IE */
3416 if (elems.tim)
3417 bss_conf->dtim_period = elems.tim->dtim_period ?: 1;
3418 else
3419 bss_conf->dtim_period = 1;
ef429dad
JB		 3420
3421 if (local->hw.flags & IEEE80211_HW_TIMING_BEACON_ONLY) {
3422 sdata->vif.bss_conf.sync_tsf =
3423 le64_to_cpu(mgmt->u.beacon.timestamp);
3424 sdata->vif.bss_conf.sync_device_ts =
3425 rx_status->device_timestamp;
3426 if (elems.tim)
3427 sdata->vif.bss_conf.sync_dtim_count =
3428 elems.tim->dtim_count;
3429 else
3430 sdata->vif.bss_conf.sync_dtim_count = 0;
3431 }
3432
989c6505
AB		 3433 changed |= BSS_CHANGED_BEACON_INFO;
3434 ifmgd->have_beacon = true;
482a9c74
AB		 3435
3436 mutex_lock(&local->iflist_mtx);
3437 ieee80211_recalc_ps(local, -1);
3438 mutex_unlock(&local->iflist_mtx);
3439
ce857888 3440 ieee80211_recalc_ps_vif(sdata);
c65dd147
EG		 3441 }
3442
1946bed9 3443 if (elems.erp_info) {
7a5158ef
JB		 3444 erp_valid = true;
3445 erp_value = elems.erp_info[0];
3446 } else {
3447 erp_valid = false;
50c4afb9 3448 }
7a5158ef
JB		 3449 changed |= ieee80211_handle_bss_capability(sdata,
3450 le16_to_cpu(mgmt->u.beacon.capab_info),
3451 erp_valid, erp_value);
f0706e82 3452
1128958d 3453 mutex_lock(&local->sta_mtx);
bee7f586
JB		 3454 sta = sta_info_get(sdata, bssid);
3455
53b954ee
EP		 3456 if (ieee80211_config_bw(sdata, sta,
3457 elems.ht_cap_elem, elems.ht_operation,
30eb1dc2
JB		 3458 elems.vht_operation, bssid, &changed)) {
3459 mutex_unlock(&local->sta_mtx);
3460 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
3461 WLAN_REASON_DEAUTH_LEAVING,
3462 true, deauth_buf);
6ff57cf8
JB		 3463 cfg80211_tx_mlme_mgmt(sdata->dev, deauth_buf,
3464 sizeof(deauth_buf));
8d61ffa5 3465 return;
30eb1dc2 3466 }
bee7f586
JB		 3467
3468 if (sta && elems.opmode_notif)
3469 ieee80211_vht_handle_opmode(sdata, sta, *elems.opmode_notif,
3470 rx_status->band, true);
1128958d 3471 mutex_unlock(&local->sta_mtx);
d3c990fb 3472
24a4e400
SG		 3473 changed |= ieee80211_handle_pwr_constr(sdata, chan, mgmt,
3474 elems.country_elem,
3475 elems.country_elem_len,
c8d65917
SG		 3476 elems.pwr_constr_elem,
3477 elems.cisco_dtpc_elem);
3f2355cb 3478
471b3efd 3479 ieee80211_bss_info_change_notify(sdata, changed);
f0706e82
JB		 3480}
3481
1fa57d01
JB		 3482void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
3483 struct sk_buff *skb)
f0706e82
JB		 3484{
3485 struct ieee80211_rx_status *rx_status;
f0706e82
JB		 3486 struct ieee80211_mgmt *mgmt;
3487 u16 fc;
1b3a2e49
JB		 3488 struct ieee802_11_elems elems;
3489 int ies_len;
f0706e82 3490
f0706e82
JB		 3491 rx_status = (struct ieee80211_rx_status *) skb->cb;
3492 mgmt = (struct ieee80211_mgmt *) skb->data;
3493 fc = le16_to_cpu(mgmt->frame_control);
3494
8d61ffa5 3495 sdata_lock(sdata);
77fdaa12 3496
66e67e41
JB		 3497 switch (fc & IEEE80211_FCTL_STYPE) {
3498 case IEEE80211_STYPE_BEACON:
8d61ffa5 3499 ieee80211_rx_mgmt_beacon(sdata, mgmt, skb->len, rx_status);
66e67e41
JB		 3500 break;
3501 case IEEE80211_STYPE_PROBE_RESP:
3502 ieee80211_rx_mgmt_probe_resp(sdata, skb);
3503 break;
3504 case IEEE80211_STYPE_AUTH:
8d61ffa5 3505 ieee80211_rx_mgmt_auth(sdata, mgmt, skb->len);
66e67e41
JB		 3506 break;
3507 case IEEE80211_STYPE_DEAUTH:
8d61ffa5 3508 ieee80211_rx_mgmt_deauth(sdata, mgmt, skb->len);
66e67e41
JB		 3509 break;
3510 case IEEE80211_STYPE_DISASSOC:
8d61ffa5 3511 ieee80211_rx_mgmt_disassoc(sdata, mgmt, skb->len);
66e67e41
JB		 3512 break;
3513 case IEEE80211_STYPE_ASSOC_RESP:
3514 case IEEE80211_STYPE_REASSOC_RESP:
8d61ffa5 3515 ieee80211_rx_mgmt_assoc_resp(sdata, mgmt, skb->len);
66e67e41
JB		 3516 break;
3517 case IEEE80211_STYPE_ACTION:
37799e52 3518 if (mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT) {
1b3a2e49
JB		 3519 ies_len = skb->len -
3520 offsetof(struct ieee80211_mgmt,
3521 u.action.u.chan_switch.variable);
37799e52
JB		 3522
3523 if (ies_len < 0)
3524 break;
3525
3526 ieee802_11_parse_elems(
3527 mgmt->u.action.u.chan_switch.variable,
b2e506bf 3528 ies_len, true, &elems);
37799e52
JB		 3529
3530 if (elems.parse_error)
3531 break;
3532
1b3a2e49 3533 ieee80211_sta_process_chanswitch(sdata,
2ba45384
LC		 3534 rx_status->mactime,
3535 rx_status->device_timestamp,
3536 &elems, false);
1b3a2e49
JB		 3537 } else if (mgmt->u.action.category == WLAN_CATEGORY_PUBLIC) {
3538 ies_len = skb->len -
3539 offsetof(struct ieee80211_mgmt,
3540 u.action.u.ext_chan_switch.variable);
3541
3542 if (ies_len < 0)
3543 break;
3544
3545 ieee802_11_parse_elems(
3546 mgmt->u.action.u.ext_chan_switch.variable,
b2e506bf 3547 ies_len, true, &elems);
1b3a2e49
JB		 3548
3549 if (elems.parse_error)
3550 break;
3551
3552 /* for the handling code pretend this was also an IE */
3553 elems.ext_chansw_ie =
3554 &mgmt->u.action.u.ext_chan_switch.data;
3555
66e67e41 3556 ieee80211_sta_process_chanswitch(sdata,
2ba45384
LC		 3557 rx_status->mactime,
3558 rx_status->device_timestamp,
3559 &elems, false);
77fdaa12 3560 }
37799e52 3561 break;
77fdaa12 3562 }
8d61ffa5 3563 sdata_unlock(sdata);
f0706e82
JB		 3564}
3565
9c6bd790 3566static void ieee80211_sta_timer(unsigned long data)
f0706e82 3567{
60f8b39c
JB		 3568 struct ieee80211_sub_if_data *sdata =
3569 (struct ieee80211_sub_if_data *) data;
5bb644a0 3570
9b7d72c1 3571 ieee80211_queue_work(&sdata->local->hw, &sdata->work);
f0706e82
JB		 3572}
3573
04ac3c0e 3574static void ieee80211_sta_connection_lost(struct ieee80211_sub_if_data *sdata,
6b684db1 3575 u8 *bssid, u8 reason, bool tx)
04ac3c0e 3576{
6ae16775 3577 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
04ac3c0e 3578
37ad3888 3579 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, reason,
6b684db1 3580 tx, frame_buf);
37ad3888 3581
6ff57cf8
JB		 3582 cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf,
3583 IEEE80211_DEAUTH_FRAME_LEN);
04ac3c0e
FF		 3584}
3585
66e67e41
JB		 3586static int ieee80211_probe_auth(struct ieee80211_sub_if_data *sdata)
3587{
3588 struct ieee80211_local *local = sdata->local;
3589 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3590 struct ieee80211_mgd_auth_data *auth_data = ifmgd->auth_data;
1672c0e3 3591 u32 tx_flags = 0;
66e67e41 3592
8d61ffa5 3593 sdata_assert_lock(sdata);
66e67e41
JB		 3594
3595 if (WARN_ON_ONCE(!auth_data))
3596 return -EINVAL;
3597
66e67e41
JB		 3598 auth_data->tries++;
3599
3600 if (auth_data->tries > IEEE80211_AUTH_MAX_TRIES) {
bdcbd8e0
JB		 3601 sdata_info(sdata, "authentication with %pM timed out\n",
3602 auth_data->bss->bssid);
66e67e41
JB		 3603
3604 /*
3605 * Most likely AP is not in the range so remove the
3606 * bss struct for that AP.
3607 */
3608 cfg80211_unlink_bss(local->hw.wiphy, auth_data->bss);
3609
3610 return -ETIMEDOUT;
3611 }
3612
a1845fc7
JB		 3613 drv_mgd_prepare_tx(local, sdata);
3614
66e67e41 3615 if (auth_data->bss->proberesp_ies) {
6b8ece3a
JM		 3616 u16 trans = 1;
3617 u16 status = 0;
3618
bdcbd8e0
JB		 3619 sdata_info(sdata, "send auth to %pM (try %d/%d)\n",
3620 auth_data->bss->bssid, auth_data->tries,
3621 IEEE80211_AUTH_MAX_TRIES);
66e67e41
JB		 3622
3623 auth_data->expected_transaction = 2;
6b8ece3a
JM		 3624
3625 if (auth_data->algorithm == WLAN_AUTH_SAE) {
3626 trans = auth_data->sae_trans;
3627 status = auth_data->sae_status;
3628 auth_data->expected_transaction = trans;
3629 }
3630
6211dd12
SG		 3631 if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)
3632 tx_flags = IEEE80211_TX_CTL_REQ_TX_STATUS |
3633 IEEE80211_TX_INTFL_MLME_CONN_TX;
3634
6b8ece3a
JM		 3635 ieee80211_send_auth(sdata, trans, auth_data->algorithm, status,
3636 auth_data->data, auth_data->data_len,
66e67e41 3637 auth_data->bss->bssid,
1672c0e3
JB		 3638 auth_data->bss->bssid, NULL, 0, 0,
3639 tx_flags);
66e67e41
JB		 3640 } else {
3641 const u8 *ssidie;
3642
bdcbd8e0
JB		 3643 sdata_info(sdata, "direct probe to %pM (try %d/%i)\n",
3644 auth_data->bss->bssid, auth_data->tries,
3645 IEEE80211_AUTH_MAX_TRIES);
66e67e41 3646
9caf0364 3647 rcu_read_lock();
66e67e41 3648 ssidie = ieee80211_bss_get_ie(auth_data->bss, WLAN_EID_SSID);
9caf0364
JB		 3649 if (!ssidie) {
3650 rcu_read_unlock();
66e67e41 3651 return -EINVAL;
9caf0364 3652 }
66e67e41
JB		 3653 /*
3654 * Direct probe is sent to broadcast address as some APs
3655 * will not answer to direct packet in unassociated state.
3656 */
a344d677
JB		 3657 ieee80211_send_probe_req(sdata, sdata->vif.addr, NULL,
3658 ssidie + 2, ssidie[1],
6211dd12 3659 NULL, 0, (u32) -1, true, 0,
55de908a 3660 auth_data->bss->channel, false);
9caf0364 3661 rcu_read_unlock();
66e67e41
JB		 3662 }
3663
6211dd12 3664 if (tx_flags == 0) {
1672c0e3 3665 auth_data->timeout = jiffies + IEEE80211_AUTH_TIMEOUT;
cb236d2d 3666 auth_data->timeout_started = true;
8d61ffa5 3667 run_again(sdata, auth_data->timeout);
89afe614 3668 } else {
cb236d2d
JB		 3669 auth_data->timeout =
3670 round_jiffies_up(jiffies + IEEE80211_AUTH_TIMEOUT_LONG);
3671 auth_data->timeout_started = true;
3672 run_again(sdata, auth_data->timeout);
1672c0e3 3673 }
66e67e41
JB		 3674
3675 return 0;
3676}
3677
3678static int ieee80211_do_assoc(struct ieee80211_sub_if_data *sdata)
3679{
3680 struct ieee80211_mgd_assoc_data *assoc_data = sdata->u.mgd.assoc_data;
3681 struct ieee80211_local *local = sdata->local;
3682
8d61ffa5 3683 sdata_assert_lock(sdata);
66e67e41 3684
66e67e41
JB		 3685 assoc_data->tries++;
3686 if (assoc_data->tries > IEEE80211_ASSOC_MAX_TRIES) {
bdcbd8e0
JB		 3687 sdata_info(sdata, "association with %pM timed out\n",
3688 assoc_data->bss->bssid);
66e67e41
JB		 3689
3690 /*
3691 * Most likely AP is not in the range so remove the
3692 * bss struct for that AP.
3693 */
3694 cfg80211_unlink_bss(local->hw.wiphy, assoc_data->bss);
3695
3696 return -ETIMEDOUT;
3697 }
3698
bdcbd8e0
JB		 3699 sdata_info(sdata, "associate with %pM (try %d/%d)\n",
3700 assoc_data->bss->bssid, assoc_data->tries,
3701 IEEE80211_ASSOC_MAX_TRIES);
66e67e41
JB		 3702 ieee80211_send_assoc(sdata);
3703
1672c0e3
JB		 3704 if (!(local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)) {
3705 assoc_data->timeout = jiffies + IEEE80211_ASSOC_TIMEOUT;
89afe614 3706 assoc_data->timeout_started = true;
8d61ffa5 3707 run_again(sdata, assoc_data->timeout);
89afe614 3708 } else {
cb236d2d
JB		 3709 assoc_data->timeout =
3710 round_jiffies_up(jiffies +
3711 IEEE80211_ASSOC_TIMEOUT_LONG);
3712 assoc_data->timeout_started = true;
3713 run_again(sdata, assoc_data->timeout);
1672c0e3 3714 }
66e67e41
JB		 3715
3716 return 0;
3717}
3718
1672c0e3
JB		 3719void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata,
3720 __le16 fc, bool acked)
3721{
3722 struct ieee80211_local *local = sdata->local;
3723
3724 sdata->u.mgd.status_fc = fc;
3725 sdata->u.mgd.status_acked = acked;
3726 sdata->u.mgd.status_received = true;
3727
3728 ieee80211_queue_work(&local->hw, &sdata->work);
3729}
3730
1fa57d01 3731void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata)
9c6bd790 3732{
9c6bd790 3733 struct ieee80211_local *local = sdata->local;
1fa57d01 3734 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
9c6bd790 3735
8d61ffa5 3736 sdata_lock(sdata);
77fdaa12 3737
1672c0e3
JB		 3738 if (ifmgd->status_received) {
3739 __le16 fc = ifmgd->status_fc;
3740 bool status_acked = ifmgd->status_acked;
3741
3742 ifmgd->status_received = false;
3743 if (ifmgd->auth_data &&
3744 (ieee80211_is_probe_req(fc) || ieee80211_is_auth(fc))) {
3745 if (status_acked) {
3746 ifmgd->auth_data->timeout =
3747 jiffies + IEEE80211_AUTH_TIMEOUT_SHORT;
8d61ffa5 3748 run_again(sdata, ifmgd->auth_data->timeout);
1672c0e3
JB		 3749 } else {
3750 ifmgd->auth_data->timeout = jiffies - 1;
3751 }
89afe614 3752 ifmgd->auth_data->timeout_started = true;
1672c0e3
JB		 3753 } else if (ifmgd->assoc_data &&
3754 (ieee80211_is_assoc_req(fc) ||
3755 ieee80211_is_reassoc_req(fc))) {
3756 if (status_acked) {
3757 ifmgd->assoc_data->timeout =
3758 jiffies + IEEE80211_ASSOC_TIMEOUT_SHORT;
8d61ffa5 3759 run_again(sdata, ifmgd->assoc_data->timeout);
1672c0e3
JB		 3760 } else {
3761 ifmgd->assoc_data->timeout = jiffies - 1;
3762 }
89afe614 3763 ifmgd->assoc_data->timeout_started = true;
1672c0e3
JB		 3764 }
3765 }
3766
89afe614 3767 if (ifmgd->auth_data && ifmgd->auth_data->timeout_started &&
66e67e41
JB		 3768 time_after(jiffies, ifmgd->auth_data->timeout)) {
3769 if (ifmgd->auth_data->done) {
3770 /*
3771 * ok ... we waited for assoc but userspace didn't,
3772 * so let's just kill the auth data
3773 */
3774 ieee80211_destroy_auth_data(sdata, false);
3775 } else if (ieee80211_probe_auth(sdata)) {
3776 u8 bssid[ETH_ALEN];
3777
3778 memcpy(bssid, ifmgd->auth_data->bss->bssid, ETH_ALEN);
3779
3780 ieee80211_destroy_auth_data(sdata, false);
3781
6ff57cf8 3782 cfg80211_auth_timeout(sdata->dev, bssid);
66e67e41 3783 }
89afe614 3784 } else if (ifmgd->auth_data && ifmgd->auth_data->timeout_started)
8d61ffa5 3785 run_again(sdata, ifmgd->auth_data->timeout);
66e67e41 3786
89afe614 3787 if (ifmgd->assoc_data && ifmgd->assoc_data->timeout_started &&
66e67e41 3788 time_after(jiffies, ifmgd->assoc_data->timeout)) {
989c6505 3789 if ((ifmgd->assoc_data->need_beacon && !ifmgd->have_beacon) ||
66e67e41 3790 ieee80211_do_assoc(sdata)) {
959867fa 3791 struct cfg80211_bss *bss = ifmgd->assoc_data->bss;
66e67e41
JB		 3792
3793 ieee80211_destroy_assoc_data(sdata, false);
959867fa 3794 cfg80211_assoc_timeout(sdata->dev, bss);
66e67e41 3795 }
89afe614 3796 } else if (ifmgd->assoc_data && ifmgd->assoc_data->timeout_started)
8d61ffa5 3797 run_again(sdata, ifmgd->assoc_data->timeout);
66e67e41 3798
392b9ffb 3799 if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL &&
b291ba11 3800 ifmgd->associated) {
a43abf29 3801 u8 bssid[ETH_ALEN];
72a8a3ed 3802 int max_tries;
a43abf29 3803
0c1ad2ca 3804 memcpy(bssid, ifmgd->associated->bssid, ETH_ALEN);
4e5ff376 3805
72a8a3ed 3806 if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)
180205bd 3807 max_tries = max_nullfunc_tries;
72a8a3ed 3808 else
180205bd 3809 max_tries = max_probe_tries;
72a8a3ed 3810
4e5ff376
FF		 3811 /* ACK received for nullfunc probing frame */
3812 if (!ifmgd->probe_send_count)
3813 ieee80211_reset_ap_probe(sdata);
04ac3c0e
FF		 3814 else if (ifmgd->nullfunc_failed) {
3815 if (ifmgd->probe_send_count < max_tries) {
bdcbd8e0
JB		 3816 mlme_dbg(sdata,
3817 "No ack for nullfunc frame to AP %pM, try %d/%i\n",
3818 bssid, ifmgd->probe_send_count,
3819 max_tries);
04ac3c0e
FF		 3820 ieee80211_mgd_probe_ap_send(sdata);
3821 } else {
bdcbd8e0
JB		 3822 mlme_dbg(sdata,
3823 "No ack for nullfunc frame to AP %pM, disconnecting.\n",
3824 bssid);
95acac61 3825 ieee80211_sta_connection_lost(sdata, bssid,
6b684db1
JB		 3826 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY,
3827 false);
04ac3c0e
FF		 3828 }
3829 } else if (time_is_after_jiffies(ifmgd->probe_timeout))
8d61ffa5 3830 run_again(sdata, ifmgd->probe_timeout);
04ac3c0e 3831 else if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) {
bdcbd8e0
JB		 3832 mlme_dbg(sdata,
3833 "Failed to send nullfunc to AP %pM after %dms, disconnecting\n",
3834 bssid, probe_wait_ms);
95acac61 3835 ieee80211_sta_connection_lost(sdata, bssid,
6b684db1 3836 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, false);
04ac3c0e 3837 } else if (ifmgd->probe_send_count < max_tries) {
bdcbd8e0
JB		 3838 mlme_dbg(sdata,
3839 "No probe response from AP %pM after %dms, try %d/%i\n",
3840 bssid, probe_wait_ms,
3841 ifmgd->probe_send_count, max_tries);
a43abf29
ML		 3842 ieee80211_mgd_probe_ap_send(sdata);
3843 } else {
b291ba11
JB		 3844 /*
3845 * We actually lost the connection ... or did we?
3846 * Let's make sure!
3847 */
b38afa87
BG		 3848 wiphy_debug(local->hw.wiphy,
3849 "%s: No probe response from AP %pM"
3850 " after %dms, disconnecting.\n",
3851 sdata->name,
180205bd 3852 bssid, probe_wait_ms);
04ac3c0e 3853
95acac61 3854 ieee80211_sta_connection_lost(sdata, bssid,
6b684db1 3855 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, false);
b291ba11
JB		 3856 }
3857 }
3858
8d61ffa5 3859 sdata_unlock(sdata);
f0706e82
JB		 3860}
3861
b291ba11
JB		 3862static void ieee80211_sta_bcn_mon_timer(unsigned long data)
3863{
3864 struct ieee80211_sub_if_data *sdata =
3865 (struct ieee80211_sub_if_data *) data;
3866 struct ieee80211_local *local = sdata->local;
0c21e632 3867 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
b291ba11
JB		 3868
3869 if (local->quiescing)
3870 return;
3871
0c21e632 3872 if (sdata->vif.csa_active && !ifmgd->csa_waiting_bcn)
e5593f56
MK		 3873 return;
3874
682bd38b 3875 sdata->u.mgd.connection_loss = false;
1e4dcd01
JO		 3876 ieee80211_queue_work(&sdata->local->hw,
3877 &sdata->u.mgd.beacon_connection_loss_work);
b291ba11
JB		 3878}
3879
3880static void ieee80211_sta_conn_mon_timer(unsigned long data)
3881{
3882 struct ieee80211_sub_if_data *sdata =
3883 (struct ieee80211_sub_if_data *) data;
3884 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3885 struct ieee80211_local *local = sdata->local;
3886
3887 if (local->quiescing)
3888 return;
3889
0c21e632 3890 if (sdata->vif.csa_active && !ifmgd->csa_waiting_bcn)
e5593f56
MK		 3891 return;
3892
42935eca 3893 ieee80211_queue_work(&local->hw, &ifmgd->monitor_work);
b291ba11
JB		 3894}
3895
3896static void ieee80211_sta_monitor_work(struct work_struct *work)
3897{
3898 struct ieee80211_sub_if_data *sdata =
3899 container_of(work, struct ieee80211_sub_if_data,
3900 u.mgd.monitor_work);
3901
3902 ieee80211_mgd_probe_ap(sdata, false);
3903}
3904
9c6bd790
JB		 3905static void ieee80211_restart_sta_timer(struct ieee80211_sub_if_data *sdata)
3906{
494f1fe5
EP		 3907 u32 flags;
3908
ad935687 3909 if (sdata->vif.type == NL80211_IFTYPE_STATION) {
925e64c3 3910 __ieee80211_stop_poll(sdata);
ad935687 3911
b291ba11 3912 /* let's probe the connection once */
494f1fe5
EP		 3913 flags = sdata->local->hw.flags;
3914 if (!(flags & IEEE80211_HW_CONNECTION_MONITOR))
3915 ieee80211_queue_work(&sdata->local->hw,
3916 &sdata->u.mgd.monitor_work);
b291ba11 3917 /* and do all the other regular work too */
64592c8f 3918 ieee80211_queue_work(&sdata->local->hw, &sdata->work);
ad935687 3919 }
9c6bd790 3920}
f0706e82 3921
b8360ab8 3922#ifdef CONFIG_PM
1a1cb744
JB		 3923void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata)
3924{
3925 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3926 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
3927
3928 sdata_lock(sdata);
3929
c52666ae
EG		 3930 if (ifmgd->auth_data || ifmgd->assoc_data) {
3931 const u8 *bssid = ifmgd->auth_data ?
3932 ifmgd->auth_data->bss->bssid :
3933 ifmgd->assoc_data->bss->bssid;
3934
1a1cb744 3935 /*
c52666ae
EG		 3936 * If we are trying to authenticate / associate while suspending,
3937 * cfg80211 won't know and won't actually abort those attempts,
3938 * thus we need to do that ourselves.
1a1cb744 3939 */
c52666ae 3940 ieee80211_send_deauth_disassoc(sdata, bssid,
1a1cb744
JB		 3941 IEEE80211_STYPE_DEAUTH,
3942 WLAN_REASON_DEAUTH_LEAVING,
3943 false, frame_buf);
c52666ae
EG		 3944 if (ifmgd->assoc_data)
3945 ieee80211_destroy_assoc_data(sdata, false);
3946 if (ifmgd->auth_data)
3947 ieee80211_destroy_auth_data(sdata, false);
1a1cb744
JB		 3948 cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf,
3949 IEEE80211_DEAUTH_FRAME_LEN);
3950 }
3951
3952 sdata_unlock(sdata);
3953}
3954
b8360ab8
JB		 3955void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata)
3956{
3957 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3958
8d61ffa5 3959 sdata_lock(sdata);
b8360ab8 3960 if (!ifmgd->associated) {
8d61ffa5 3961 sdata_unlock(sdata);
b8360ab8
JB		 3962 return;
3963 }
3964
3965 if (sdata->flags & IEEE80211_SDATA_DISCONNECT_RESUME) {
3966 sdata->flags &= ~IEEE80211_SDATA_DISCONNECT_RESUME;
3967 mlme_dbg(sdata, "driver requested disconnect after resume\n");
3968 ieee80211_sta_connection_lost(sdata,
3969 ifmgd->associated->bssid,
3970 WLAN_REASON_UNSPECIFIED,
3971 true);
8d61ffa5 3972 sdata_unlock(sdata);
b8360ab8
JB		 3973 return;
3974 }
8d61ffa5 3975 sdata_unlock(sdata);
b8360ab8
JB		 3976}
3977#endif
3978
9c6bd790
JB		 3979/* interface setup */
3980void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata)
f0706e82 3981{
46900298 3982 struct ieee80211_if_managed *ifmgd;
988c0f72 3983
46900298 3984 ifmgd = &sdata->u.mgd;
b291ba11 3985 INIT_WORK(&ifmgd->monitor_work, ieee80211_sta_monitor_work);
46900298 3986 INIT_WORK(&ifmgd->chswitch_work, ieee80211_chswitch_work);
1e4dcd01
JO		 3987 INIT_WORK(&ifmgd->beacon_connection_loss_work,
3988 ieee80211_beacon_connection_loss_work);
882a7c69
JB		 3989 INIT_WORK(&ifmgd->csa_connection_drop_work,
3990 ieee80211_csa_connection_drop_work);
687da132 3991 INIT_WORK(&ifmgd->request_smps_work, ieee80211_request_smps_mgd_work);
81dd2b88
AN		 3992 INIT_DELAYED_WORK(&ifmgd->tdls_peer_del_work,
3993 ieee80211_tdls_peer_del_work);
46900298 3994 setup_timer(&ifmgd->timer, ieee80211_sta_timer,
c481ec97 3995 (unsigned long) sdata);
b291ba11
JB		 3996 setup_timer(&ifmgd->bcn_mon_timer, ieee80211_sta_bcn_mon_timer,
3997 (unsigned long) sdata);
3998 setup_timer(&ifmgd->conn_mon_timer, ieee80211_sta_conn_mon_timer,
3999 (unsigned long) sdata);
46900298 4000 setup_timer(&ifmgd->chswitch_timer, ieee80211_chswitch_timer,
9c6bd790 4001 (unsigned long) sdata);
02219b3a
JB		 4002 INIT_DELAYED_WORK(&ifmgd->tx_tspec_wk,
4003 ieee80211_sta_handle_tspec_ac_params_wk);
9c6bd790 4004
ab1faead 4005 ifmgd->flags = 0;
1478acb3 4006 ifmgd->powersave = sdata->wdev.ps;
219c3867
AB		 4007 ifmgd->uapsd_queues = sdata->local->hw.uapsd_queues;
4008 ifmgd->uapsd_max_sp_len = sdata->local->hw.uapsd_max_sp_len;
67baf663 4009 ifmgd->p2p_noa_index = -1;
bbbdff9e 4010
0d8614b4 4011 if (sdata->local->hw.wiphy->features & NL80211_FEATURE_DYNAMIC_SMPS)
0f78231b
JB		 4012 ifmgd->req_smps = IEEE80211_SMPS_AUTOMATIC;
4013 else
4014 ifmgd->req_smps = IEEE80211_SMPS_OFF;
1277b4a9
LK		 4015
4016 /* Setup TDLS data */
4017 spin_lock_init(&ifmgd->teardown_lock);
4018 ifmgd->teardown_skb = NULL;
4019 ifmgd->orig_teardown_skb = NULL;
f0706e82
JB		 4020}
4021
77fdaa12
JB		 4022/* scan finished notification */
4023void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local)
60f8b39c 4024{
31ee67a1 4025 struct ieee80211_sub_if_data *sdata;
60f8b39c 4026
77fdaa12
JB		 4027 /* Restart STA timers */
4028 rcu_read_lock();
370bd005
BG		 4029 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
4030 if (ieee80211_sdata_running(sdata))
4031 ieee80211_restart_sta_timer(sdata);
4032 }
77fdaa12
JB		 4033 rcu_read_unlock();
4034}
60f8b39c 4035
77fdaa12
JB		 4036int ieee80211_max_network_latency(struct notifier_block *nb,
4037 unsigned long data, void *dummy)
4038{
4039 s32 latency_usec = (s32) data;
4040 struct ieee80211_local *local =
4041 container_of(nb, struct ieee80211_local,
4042 network_latency_notifier);
1fa6f4af 4043
77fdaa12
JB		 4044 mutex_lock(&local->iflist_mtx);
4045 ieee80211_recalc_ps(local, latency_usec);
4046 mutex_unlock(&local->iflist_mtx);
dfe67012 4047
8bd811aa 4048 return NOTIFY_OK;
9c6bd790
JB		 4049}
4050
f2d9d270
JB		 4051static u8 ieee80211_ht_vht_rx_chains(struct ieee80211_sub_if_data *sdata,
4052 struct cfg80211_bss *cbss)
4053{
4054 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4055 const u8 *ht_cap_ie, *vht_cap_ie;
4056 const struct ieee80211_ht_cap *ht_cap;
4057 const struct ieee80211_vht_cap *vht_cap;
4058 u8 chains = 1;
4059
4060 if (ifmgd->flags & IEEE80211_STA_DISABLE_HT)
4061 return chains;
4062
9caf0364 4063 ht_cap_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_HT_CAPABILITY);
f2d9d270
JB		 4064 if (ht_cap_ie && ht_cap_ie[1] >= sizeof(*ht_cap)) {
4065 ht_cap = (void *)(ht_cap_ie + 2);
4066 chains = ieee80211_mcs_to_chains(&ht_cap->mcs);
4067 /*
4068 * TODO: use "Tx Maximum Number Spatial Streams Supported" and
4069 * "Tx Unequal Modulation Supported" fields.
4070 */
4071 }
4072
4073 if (ifmgd->flags & IEEE80211_STA_DISABLE_VHT)
4074 return chains;
4075
9caf0364 4076 vht_cap_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_VHT_CAPABILITY);
f2d9d270
JB		 4077 if (vht_cap_ie && vht_cap_ie[1] >= sizeof(*vht_cap)) {
4078 u8 nss;
4079 u16 tx_mcs_map;
4080
4081 vht_cap = (void *)(vht_cap_ie + 2);
4082 tx_mcs_map = le16_to_cpu(vht_cap->supp_mcs.tx_mcs_map);
4083 for (nss = 8; nss > 0; nss--) {
4084 if (((tx_mcs_map >> (2 * (nss - 1))) & 3) !=
4085 IEEE80211_VHT_MCS_NOT_SUPPORTED)
4086 break;
4087 }
4088 /* TODO: use "Tx Highest Supported Long GI Data Rate" field? */
4089 chains = max(chains, nss);
4090 }
4091
4092 return chains;
4093}
4094
b17166a7
JB		 4095static int ieee80211_prep_channel(struct ieee80211_sub_if_data *sdata,
4096 struct cfg80211_bss *cbss)
a1cf775d
JB		 4097{
4098 struct ieee80211_local *local = sdata->local;
4099 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
53b954ee 4100 const struct ieee80211_ht_cap *ht_cap = NULL;
24398e39 4101 const struct ieee80211_ht_operation *ht_oper = NULL;
f2d9d270 4102 const struct ieee80211_vht_operation *vht_oper = NULL;
24398e39 4103 struct ieee80211_supported_band *sband;
4bf88530 4104 struct cfg80211_chan_def chandef;
f2d9d270 4105 int ret;
a1cf775d 4106
24398e39
JB		 4107 sband = local->hw.wiphy->bands[cbss->channel->band];
4108
f2d9d270
JB		 4109 ifmgd->flags &= ~(IEEE80211_STA_DISABLE_40MHZ |
4110 IEEE80211_STA_DISABLE_80P80MHZ |
4111 IEEE80211_STA_DISABLE_160MHZ);
4112
9caf0364
JB		 4113 rcu_read_lock();
4114
f2d9d270
JB		 4115 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT) &&
4116 sband->ht_cap.ht_supported) {
53b954ee 4117 const u8 *ht_oper_ie, *ht_cap_ie;
24398e39 4118
9caf0364 4119 ht_oper_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_HT_OPERATION);
24398e39
JB		 4120 if (ht_oper_ie && ht_oper_ie[1] >= sizeof(*ht_oper))
4121 ht_oper = (void *)(ht_oper_ie + 2);
08e6effa 4122
53b954ee
EP		 4123 ht_cap_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_HT_CAPABILITY);
4124 if (ht_cap_ie && ht_cap_ie[1] >= sizeof(*ht_cap))
4125 ht_cap = (void *)(ht_cap_ie + 2);
4126
4127 if (!ht_cap) {
08e6effa
JB		 4128 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
4129 ht_oper = NULL;
4130 }
24398e39
JB		 4131 }
4132
f2d9d270
JB		 4133 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) &&
4134 sband->vht_cap.vht_supported) {
08e6effa 4135 const u8 *vht_oper_ie, *vht_cap;
f2d9d270 4136
9caf0364
JB		 4137 vht_oper_ie = ieee80211_bss_get_ie(cbss,
4138 WLAN_EID_VHT_OPERATION);
f2d9d270
JB		 4139 if (vht_oper_ie && vht_oper_ie[1] >= sizeof(*vht_oper))
4140 vht_oper = (void *)(vht_oper_ie + 2);
4141 if (vht_oper && !ht_oper) {
4142 vht_oper = NULL;
bdcbd8e0 4143 sdata_info(sdata,
f2d9d270 4144 "AP advertised VHT without HT, disabling both\n");
cb145022
JB		 4145 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
4146 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
24398e39 4147 }
08e6effa
JB		 4148
4149 vht_cap = ieee80211_bss_get_ie(cbss, WLAN_EID_VHT_CAPABILITY);
4150 if (!vht_cap || vht_cap[1] < sizeof(struct ieee80211_vht_cap)) {
4151 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
4152 vht_oper = NULL;
4153 }
24398e39
JB		 4154 }
4155
f2d9d270
JB		 4156 ifmgd->flags |= ieee80211_determine_chantype(sdata, sband,
4157 cbss->channel,
53b954ee 4158 ht_cap, ht_oper, vht_oper,
5cdaed1e 4159 &chandef, false);
04ecd257 4160
f2d9d270
JB		 4161 sdata->needed_rx_chains = min(ieee80211_ht_vht_rx_chains(sdata, cbss),
4162 local->rx_chains);
24398e39 4163
9caf0364
JB		 4164 rcu_read_unlock();
4165
04ecd257
JB		 4166 /* will change later if needed */
4167 sdata->smps_mode = IEEE80211_SMPS_OFF;
4168
34a3740d 4169 mutex_lock(&local->mtx);
f2d9d270
JB		 4170 /*
4171 * If this fails (possibly due to channel context sharing
4172 * on incompatible channels, e.g. 80+80 and 160 sharing the
4173 * same control channel) try to use a smaller bandwidth.
4174 */
4175 ret = ieee80211_vif_use_channel(sdata, &chandef,
4176 IEEE80211_CHANCTX_SHARED);
0418a445
SW		 4177
4178 /* don't downgrade for 5 and 10 MHz channels, though. */
4179 if (chandef.width == NL80211_CHAN_WIDTH_5 ||
4180 chandef.width == NL80211_CHAN_WIDTH_10)
34a3740d 4181 goto out;
0418a445 4182
d601cd8d 4183 while (ret && chandef.width != NL80211_CHAN_WIDTH_20_NOHT) {
e6b7cde4 4184 ifmgd->flags |= ieee80211_chandef_downgrade(&chandef);
d601cd8d
JB		 4185 ret = ieee80211_vif_use_channel(sdata, &chandef,
4186 IEEE80211_CHANCTX_SHARED);
4187 }
34a3740d
JB		 4188 out:
4189 mutex_unlock(&local->mtx);
f2d9d270 4190 return ret;
b17166a7
JB		 4191}
4192
4193static int ieee80211_prep_connection(struct ieee80211_sub_if_data *sdata,
4194 struct cfg80211_bss *cbss, bool assoc)
4195{
4196 struct ieee80211_local *local = sdata->local;
4197 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4198 struct ieee80211_bss *bss = (void *)cbss->priv;
4199 struct sta_info *new_sta = NULL;
4200 bool have_sta = false;
4201 int err;
4202
4203 if (WARN_ON(!ifmgd->auth_data && !ifmgd->assoc_data))
4204 return -EINVAL;
4205
4206 if (assoc) {
4207 rcu_read_lock();
4208 have_sta = sta_info_get(sdata, cbss->bssid);
4209 rcu_read_unlock();
4210 }
4211
4212 if (!have_sta) {
4213 new_sta = sta_info_alloc(sdata, cbss->bssid, GFP_KERNEL);
4214 if (!new_sta)
4215 return -ENOMEM;
4216 }
13e0c8e3 4217 if (new_sta) {
5d6a1b06
JB		 4218 u32 rates = 0, basic_rates = 0;
4219 bool have_higher_than_11mbit;
4220 int min_rate = INT_MAX, min_rate_index = -1;
2103dec1 4221 struct ieee80211_chanctx_conf *chanctx_conf;
b17166a7 4222 struct ieee80211_supported_band *sband;
8cef2c9d 4223 const struct cfg80211_bss_ies *ies;
2103dec1
SW		 4224 int shift;
4225 u32 rate_flags;
b17166a7
JB		 4226
4227 sband = local->hw.wiphy->bands[cbss->channel->band];
4228
4229 err = ieee80211_prep_channel(sdata, cbss);
4230 if (err) {
4231 sta_info_free(local, new_sta);
2103dec1 4232 return -EINVAL;
b17166a7 4233 }
2103dec1
SW		 4234 shift = ieee80211_vif_get_shift(&sdata->vif);
4235
4236 rcu_read_lock();
4237 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
4238 if (WARN_ON(!chanctx_conf)) {
4239 rcu_read_unlock();
c368ddaa 4240 sta_info_free(local, new_sta);
2103dec1
SW		 4241 return -EINVAL;
4242 }
4243 rate_flags = ieee80211_chandef_rate_flags(&chanctx_conf->def);
4244 rcu_read_unlock();
5d6a1b06 4245
5d6a1b06
JB		 4246 ieee80211_get_rates(sband, bss->supp_rates,
4247 bss->supp_rates_len,
4248 &rates, &basic_rates,
4249 &have_higher_than_11mbit,
2103dec1
SW		 4250 &min_rate, &min_rate_index,
4251 shift, rate_flags);
5d6a1b06
JB		 4252
4253 /*
4254 * This used to be a workaround for basic rates missing
4255 * in the association response frame. Now that we no
4256 * longer use the basic rates from there, it probably
4257 * doesn't happen any more, but keep the workaround so
4258 * in case some *other* APs are buggy in different ways
4259 * we can connect -- with a warning.
4260 */
4261 if (!basic_rates && min_rate_index >= 0) {
bdcbd8e0
JB		 4262 sdata_info(sdata,
4263 "No basic rates, using min rate instead\n");
5d6a1b06
JB		 4264 basic_rates = BIT(min_rate_index);
4265 }
4266
13e0c8e3 4267 new_sta->sta.supp_rates[cbss->channel->band] = rates;
5d6a1b06
JB		 4268 sdata->vif.bss_conf.basic_rates = basic_rates;
4269
4270 /* cf. IEEE 802.11 9.2.12 */
55de908a 4271 if (cbss->channel->band == IEEE80211_BAND_2GHZ &&
5d6a1b06
JB		 4272 have_higher_than_11mbit)
4273 sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE;
4274 else
4275 sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE;
4276
4277 memcpy(ifmgd->bssid, cbss->bssid, ETH_ALEN);
4278
8c358bcd
JB		 4279 /* set timing information */
4280 sdata->vif.bss_conf.beacon_int = cbss->beacon_interval;
8cef2c9d 4281 rcu_read_lock();
ef429dad
JB		 4282 ies = rcu_dereference(cbss->beacon_ies);
4283 if (ies) {
4284 const u8 *tim_ie;
4285
4286 sdata->vif.bss_conf.sync_tsf = ies->tsf;
4287 sdata->vif.bss_conf.sync_device_ts =
4288 bss->device_ts_beacon;
4289 tim_ie = cfg80211_find_ie(WLAN_EID_TIM,
4290 ies->data, ies->len);
4291 if (tim_ie && tim_ie[1] >= 2)
4292 sdata->vif.bss_conf.sync_dtim_count = tim_ie[2];
4293 else
4294 sdata->vif.bss_conf.sync_dtim_count = 0;
4295 } else if (!(local->hw.flags &
4296 IEEE80211_HW_TIMING_BEACON_ONLY)) {
4297 ies = rcu_dereference(cbss->proberesp_ies);
4298 /* must be non-NULL since beacon IEs were NULL */
4299 sdata->vif.bss_conf.sync_tsf = ies->tsf;
4300 sdata->vif.bss_conf.sync_device_ts =
4301 bss->device_ts_presp;
4302 sdata->vif.bss_conf.sync_dtim_count = 0;
4303 } else {
4304 sdata->vif.bss_conf.sync_tsf = 0;
4305 sdata->vif.bss_conf.sync_device_ts = 0;
4306 sdata->vif.bss_conf.sync_dtim_count = 0;
4307 }
8cef2c9d 4308 rcu_read_unlock();
8c358bcd
JB		 4309
4310 /* tell driver about BSSID, basic rates and timing */
5d6a1b06 4311 ieee80211_bss_info_change_notify(sdata,
8c358bcd
JB		 4312 BSS_CHANGED_BSSID | BSS_CHANGED_BASIC_RATES |
4313 BSS_CHANGED_BEACON_INT);
a1cf775d
JB		 4314
4315 if (assoc)
13e0c8e3 4316 sta_info_pre_move_state(new_sta, IEEE80211_STA_AUTH);
a1cf775d 4317
13e0c8e3
JB		 4318 err = sta_info_insert(new_sta);
4319 new_sta = NULL;
a1cf775d 4320 if (err) {
bdcbd8e0
JB		 4321 sdata_info(sdata,
4322 "failed to insert STA entry for the AP (error %d)\n",
4323 err);
a1cf775d
JB		 4324 return err;
4325 }
4326 } else
b203ca39 4327 WARN_ON_ONCE(!ether_addr_equal(ifmgd->bssid, cbss->bssid));
a1cf775d
JB		 4328
4329 return 0;
4330}
4331
77fdaa12
JB		 4332/* config hooks */
4333int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
4334 struct cfg80211_auth_request *req)
9c6bd790 4335{
66e67e41
JB		 4336 struct ieee80211_local *local = sdata->local;
4337 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4338 struct ieee80211_mgd_auth_data *auth_data;
77fdaa12 4339 u16 auth_alg;
66e67e41
JB		 4340 int err;
4341
4342 /* prepare auth data structure */
9c6bd790 4343
77fdaa12
JB		 4344 switch (req->auth_type) {
4345 case NL80211_AUTHTYPE_OPEN_SYSTEM:
4346 auth_alg = WLAN_AUTH_OPEN;
4347 break;
4348 case NL80211_AUTHTYPE_SHARED_KEY:
66e67e41 4349 if (IS_ERR(local->wep_tx_tfm))
9dca9c49 4350 return -EOPNOTSUPP;
77fdaa12
JB		 4351 auth_alg = WLAN_AUTH_SHARED_KEY;
4352 break;
4353 case NL80211_AUTHTYPE_FT:
4354 auth_alg = WLAN_AUTH_FT;
4355 break;
4356 case NL80211_AUTHTYPE_NETWORK_EAP:
4357 auth_alg = WLAN_AUTH_LEAP;
4358 break;
6b8ece3a
JM		 4359 case NL80211_AUTHTYPE_SAE:
4360 auth_alg = WLAN_AUTH_SAE;
4361 break;
77fdaa12
JB		 4362 default:
4363 return -EOPNOTSUPP;
60f8b39c 4364 }
77fdaa12 4365
6b8ece3a
JM		 4366 auth_data = kzalloc(sizeof(*auth_data) + req->sae_data_len +
4367 req->ie_len, GFP_KERNEL);
66e67e41 4368 if (!auth_data)
9c6bd790 4369 return -ENOMEM;
77fdaa12 4370
66e67e41 4371 auth_data->bss = req->bss;
77fdaa12 4372
6b8ece3a
JM		 4373 if (req->sae_data_len >= 4) {
4374 __le16 *pos = (__le16 *) req->sae_data;
4375 auth_data->sae_trans = le16_to_cpu(pos[0]);
4376 auth_data->sae_status = le16_to_cpu(pos[1]);
4377 memcpy(auth_data->data, req->sae_data + 4,
4378 req->sae_data_len - 4);
4379 auth_data->data_len += req->sae_data_len - 4;
4380 }
4381
77fdaa12 4382 if (req->ie && req->ie_len) {
6b8ece3a
JM		 4383 memcpy(&auth_data->data[auth_data->data_len],
4384 req->ie, req->ie_len);
4385 auth_data->data_len += req->ie_len;
9c6bd790 4386 }
77fdaa12 4387
fffd0934 4388 if (req->key && req->key_len) {
66e67e41
JB		 4389 auth_data->key_len = req->key_len;
4390 auth_data->key_idx = req->key_idx;
4391 memcpy(auth_data->key, req->key, req->key_len);
fffd0934
JB		 4392 }
4393
66e67e41 4394 auth_data->algorithm = auth_alg;
60f8b39c 4395
66e67e41 4396 /* try to authenticate/probe */
2a33bee2 4397
66e67e41
JB		 4398 if ((ifmgd->auth_data && !ifmgd->auth_data->done) ||
4399 ifmgd->assoc_data) {
4400 err = -EBUSY;
4401 goto err_free;
2a33bee2
GE		 4402 }
4403
66e67e41
JB		 4404 if (ifmgd->auth_data)
4405 ieee80211_destroy_auth_data(sdata, false);
2a33bee2 4406
66e67e41
JB		 4407 /* prep auth_data so we don't go into idle on disassoc */
4408 ifmgd->auth_data = auth_data;
af6b6374 4409
7b119dc0
JB		 4410 if (ifmgd->associated) {
4411 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
4412
4413 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
4414 WLAN_REASON_UNSPECIFIED,
4415 false, frame_buf);
4416
6ff57cf8
JB		 4417 cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf,
4418 sizeof(frame_buf));
7b119dc0 4419 }
af6b6374 4420
bdcbd8e0 4421 sdata_info(sdata, "authenticate with %pM\n", req->bss->bssid);
e5b900d2 4422
a1cf775d
JB		 4423 err = ieee80211_prep_connection(sdata, req->bss, false);
4424 if (err)
66e67e41 4425 goto err_clear;
af6b6374 4426
66e67e41
JB		 4427 err = ieee80211_probe_auth(sdata);
4428 if (err) {
66e67e41
JB		 4429 sta_info_destroy_addr(sdata, req->bss->bssid);
4430 goto err_clear;
4431 }
4432
4433 /* hold our own reference */
5b112d3d 4434 cfg80211_ref_bss(local->hw.wiphy, auth_data->bss);
8d61ffa5 4435 return 0;
66e67e41
JB		 4436
4437 err_clear:
3d2abdfd
EP		 4438 memset(ifmgd->bssid, 0, ETH_ALEN);
4439 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID);
66e67e41
JB		 4440 ifmgd->auth_data = NULL;
4441 err_free:
4442 kfree(auth_data);
66e67e41 4443 return err;
af6b6374
JB		 4444}
4445
095d81ce
JB		 4446static bool ieee80211_usable_wmm_params(struct ieee80211_sub_if_data *sdata,
4447 const u8 *wmm_param, int len)
4448{
4449 const u8 *pos;
4450 size_t left;
4451
4452 if (len < 8)
4453 return false;
4454
4455 if (wmm_param[5] != 1 /* version */)
4456 return false;
4457
4458 pos = wmm_param + 8;
4459 left = len - 8;
4460
4461 for (; left >= 4; left -= 4, pos += 4) {
4462 u8 aifsn = pos[0] & 0x0f;
4463 u8 ecwmin = pos[1] & 0x0f;
4464 u8 ecwmax = (pos[1] & 0xf0) >> 4;
4465 int aci = (pos[0] >> 5) & 0x03;
4466
4467 if (aifsn < 2) {
4468 sdata_info(sdata,
4469 "AP has invalid WMM params (AIFSN=%d for ACI %d), disabling WMM\n",
4470 aifsn, aci);
4471 return false;
4472 }
4473 if (ecwmin > ecwmax) {
4474 sdata_info(sdata,
4475 "AP has invalid WMM params (ECWmin/max=%d/%d for ACI %d), disabling WMM\n",
4476 ecwmin, ecwmax, aci);
4477 return false;
4478 }
4479 }
4480
4481 return true;
4482}
4483
77fdaa12
JB		 4484int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
4485 struct cfg80211_assoc_request *req)
f0706e82 4486{
66e67e41 4487 struct ieee80211_local *local = sdata->local;
77fdaa12 4488 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
0c1ad2ca 4489 struct ieee80211_bss *bss = (void *)req->bss->priv;
66e67e41 4490 struct ieee80211_mgd_assoc_data *assoc_data;
c65dd147 4491 const struct cfg80211_bss_ies *beacon_ies;
4e74bfdb 4492 struct ieee80211_supported_band *sband;
b08fbbd8 4493 const u8 *ssidie, *ht_ie, *vht_ie;
2a33bee2 4494 int i, err;
f0706e82 4495
66e67e41
JB		 4496 assoc_data = kzalloc(sizeof(*assoc_data) + req->ie_len, GFP_KERNEL);
4497 if (!assoc_data)
4498 return -ENOMEM;
4499
9caf0364
JB		 4500 rcu_read_lock();
4501 ssidie = ieee80211_bss_get_ie(req->bss, WLAN_EID_SSID);
4502 if (!ssidie) {
4503 rcu_read_unlock();
4504 kfree(assoc_data);
4505 return -EINVAL;
4506 }
4507 memcpy(assoc_data->ssid, ssidie + 2, ssidie[1]);
4508 assoc_data->ssid_len = ssidie[1];
4509 rcu_read_unlock();
4510
7b119dc0
JB		 4511 if (ifmgd->associated) {
4512 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
4513
4514 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
4515 WLAN_REASON_UNSPECIFIED,
4516 false, frame_buf);
4517
6ff57cf8
JB		 4518 cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf,
4519 sizeof(frame_buf));
7b119dc0 4520 }
66e67e41
JB		 4521
4522 if (ifmgd->auth_data && !ifmgd->auth_data->done) {
4523 err = -EBUSY;
4524 goto err_free;
af6b6374 4525 }
77fdaa12 4526
66e67e41
JB		 4527 if (ifmgd->assoc_data) {
4528 err = -EBUSY;
4529 goto err_free;
4530 }
77fdaa12 4531
66e67e41
JB		 4532 if (ifmgd->auth_data) {
4533 bool match;
4534
4535 /* keep sta info, bssid if matching */
b203ca39 4536 match = ether_addr_equal(ifmgd->bssid, req->bss->bssid);
66e67e41 4537 ieee80211_destroy_auth_data(sdata, match);
2a33bee2
GE		 4538 }
4539
66e67e41 4540 /* prepare assoc data */
095d81ce 4541
d8ec4433
JO		 4542 ifmgd->beacon_crc_valid = false;
4543
095d81ce
JB		 4544 assoc_data->wmm = bss->wmm_used &&
4545 (local->hw.queues >= IEEE80211_NUM_ACS);
4546 if (assoc_data->wmm) {
4547 /* try to check validity of WMM params IE */
4548 const struct cfg80211_bss_ies *ies;
4549 const u8 *wp, *start, *end;
4550
4551 rcu_read_lock();
4552 ies = rcu_dereference(req->bss->ies);
4553 start = ies->data;
4554 end = start + ies->len;
4555
4556 while (true) {
4557 wp = cfg80211_find_vendor_ie(
4558 WLAN_OUI_MICROSOFT,
4559 WLAN_OUI_TYPE_MICROSOFT_WMM,
4560 start, end - start);
4561 if (!wp)
4562 break;
4563 start = wp + wp[1] + 2;
4564 /* if this IE is too short, try the next */
4565 if (wp[1] <= 4)
4566 continue;
4567 /* if this IE is WMM params, we found what we wanted */
4568 if (wp[6] == 1)
4569 break;
4570 }
4571
4572 if (!wp || !ieee80211_usable_wmm_params(sdata, wp + 2,
4573 wp[1] - 2)) {
4574 assoc_data->wmm = false;
4575 ifmgd->flags |= IEEE80211_STA_DISABLE_WMM;
4576 }
4577 rcu_read_unlock();
4578 }
4579
de5036aa
JB		 4580 /*
4581 * IEEE802.11n does not allow TKIP/WEP as pairwise ciphers in HT mode.
4582 * We still associate in non-HT mode (11a/b/g) if any one of these
4583 * ciphers is configured as pairwise.
4584 * We can set this to true for non-11n hardware, that'll be checked
4585 * separately along with the peer capabilities.
4586 */
1c4cb928 4587 for (i = 0; i < req->crypto.n_ciphers_pairwise; i++) {
77fdaa12
JB		 4588 if (req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_WEP40 ||
4589 req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_TKIP ||
1c4cb928 4590 req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_WEP104) {
a8243b72 4591 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
d545daba 4592 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
1c4cb928 4593 netdev_info(sdata->dev,
d545daba 4594 "disabling HT/VHT due to WEP/TKIP use\n");
1c4cb928
JB		 4595 }
4596 }
77fdaa12 4597
d545daba 4598 if (req->flags & ASSOC_REQ_DISABLE_HT) {
a8243b72 4599 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
d545daba
MP		 4600 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
4601 }
ef96a842 4602
dd5ecfea
JB		 4603 if (req->flags & ASSOC_REQ_DISABLE_VHT)
4604 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
4605
4e74bfdb
JB		 4606 /* Also disable HT if we don't support it or the AP doesn't use WMM */
4607 sband = local->hw.wiphy->bands[req->bss->channel->band];
4608 if (!sband->ht_cap.ht_supported ||
095d81ce
JB		 4609 local->hw.queues < IEEE80211_NUM_ACS || !bss->wmm_used ||
4610 ifmgd->flags & IEEE80211_STA_DISABLE_WMM) {
a8243b72 4611 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
095d81ce
JB		 4612 if (!bss->wmm_used &&
4613 !(ifmgd->flags & IEEE80211_STA_DISABLE_WMM))
1b49de26
JB		 4614 netdev_info(sdata->dev,
4615 "disabling HT as WMM/QoS is not supported by the AP\n");
1c4cb928 4616 }
4e74bfdb 4617
d545daba
MP		 4618 /* disable VHT if we don't support it or the AP doesn't use WMM */
4619 if (!sband->vht_cap.vht_supported ||
095d81ce
JB		 4620 local->hw.queues < IEEE80211_NUM_ACS || !bss->wmm_used ||
4621 ifmgd->flags & IEEE80211_STA_DISABLE_WMM) {
d545daba 4622 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
095d81ce
JB		 4623 if (!bss->wmm_used &&
4624 !(ifmgd->flags & IEEE80211_STA_DISABLE_WMM))
1b49de26
JB		 4625 netdev_info(sdata->dev,
4626 "disabling VHT as WMM/QoS is not supported by the AP\n");
d545daba
MP		 4627 }
4628
ef96a842
BG		 4629 memcpy(&ifmgd->ht_capa, &req->ht_capa, sizeof(ifmgd->ht_capa));
4630 memcpy(&ifmgd->ht_capa_mask, &req->ht_capa_mask,
4631 sizeof(ifmgd->ht_capa_mask));
4632
dd5ecfea
JB		 4633 memcpy(&ifmgd->vht_capa, &req->vht_capa, sizeof(ifmgd->vht_capa));
4634 memcpy(&ifmgd->vht_capa_mask, &req->vht_capa_mask,
4635 sizeof(ifmgd->vht_capa_mask));
4636
77fdaa12 4637 if (req->ie && req->ie_len) {
66e67e41
JB		 4638 memcpy(assoc_data->ie, req->ie, req->ie_len);
4639 assoc_data->ie_len = req->ie_len;
4640 }
f679f65d 4641
66e67e41 4642 assoc_data->bss = req->bss;
f679f65d 4643
af6b6374
JB		 4644 if (ifmgd->req_smps == IEEE80211_SMPS_AUTOMATIC) {
4645 if (ifmgd->powersave)
04ecd257 4646 sdata->smps_mode = IEEE80211_SMPS_DYNAMIC;
af6b6374 4647 else
04ecd257 4648 sdata->smps_mode = IEEE80211_SMPS_OFF;
af6b6374 4649 } else
04ecd257 4650 sdata->smps_mode = ifmgd->req_smps;
af6b6374 4651
66e67e41 4652 assoc_data->capability = req->bss->capability;
66e67e41
JB		 4653 assoc_data->supp_rates = bss->supp_rates;
4654 assoc_data->supp_rates_len = bss->supp_rates_len;
9dde6423 4655
9caf0364 4656 rcu_read_lock();
9dde6423
JB		 4657 ht_ie = ieee80211_bss_get_ie(req->bss, WLAN_EID_HT_OPERATION);
4658 if (ht_ie && ht_ie[1] >= sizeof(struct ieee80211_ht_operation))
4659 assoc_data->ap_ht_param =
4660 ((struct ieee80211_ht_operation *)(ht_ie + 2))->ht_param;
4661 else
a8243b72 4662 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
b08fbbd8
JB		 4663 vht_ie = ieee80211_bss_get_ie(req->bss, WLAN_EID_VHT_CAPABILITY);
4664 if (vht_ie && vht_ie[1] >= sizeof(struct ieee80211_vht_cap))
4665 memcpy(&assoc_data->ap_vht_cap, vht_ie + 2,
4666 sizeof(struct ieee80211_vht_cap));
4667 else
4668 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
9caf0364 4669 rcu_read_unlock();
63f170e0 4670
ab13315a 4671 if (bss->wmm_used && bss->uapsd_supported &&
bb512ad0 4672 (sdata->local->hw.flags & IEEE80211_HW_SUPPORTS_UAPSD)) {
76f0303d 4673 assoc_data->uapsd = true;
ab13315a
KV		 4674 ifmgd->flags |= IEEE80211_STA_UAPSD_ENABLED;
4675 } else {
76f0303d 4676 assoc_data->uapsd = false;
ab13315a
KV		 4677 ifmgd->flags &= ~IEEE80211_STA_UAPSD_ENABLED;
4678 }
4679
77fdaa12 4680 if (req->prev_bssid)
66e67e41 4681 memcpy(assoc_data->prev_bssid, req->prev_bssid, ETH_ALEN);
77fdaa12
JB		 4682
4683 if (req->use_mfp) {
4684 ifmgd->mfp = IEEE80211_MFP_REQUIRED;
4685 ifmgd->flags |= IEEE80211_STA_MFP_ENABLED;
4686 } else {
4687 ifmgd->mfp = IEEE80211_MFP_DISABLED;
4688 ifmgd->flags &= ~IEEE80211_STA_MFP_ENABLED;
4689 }
4690
cd2f5dd7
AK		 4691 if (req->flags & ASSOC_REQ_USE_RRM)
4692 ifmgd->flags |= IEEE80211_STA_ENABLE_RRM;
4693 else
4694 ifmgd->flags &= ~IEEE80211_STA_ENABLE_RRM;
4695
77fdaa12
JB		 4696 if (req->crypto.control_port)
4697 ifmgd->flags |= IEEE80211_STA_CONTROL_PORT;
4698 else
4699 ifmgd->flags &= ~IEEE80211_STA_CONTROL_PORT;
4700
a621fa4d
JB		 4701 sdata->control_port_protocol = req->crypto.control_port_ethertype;
4702 sdata->control_port_no_encrypt = req->crypto.control_port_no_encrypt;
2475b1cc
MS		 4703 sdata->encrypt_headroom = ieee80211_cs_headroom(local, &req->crypto,
4704 sdata->vif.type);
a621fa4d 4705
66e67e41
JB		 4706 /* kick off associate process */
4707
4708 ifmgd->assoc_data = assoc_data;
826262c3 4709 ifmgd->dtim_period = 0;
989c6505 4710 ifmgd->have_beacon = false;
66e67e41 4711
a1cf775d
JB		 4712 err = ieee80211_prep_connection(sdata, req->bss, true);
4713 if (err)
4714 goto err_clear;
66e67e41 4715
c65dd147
EG		 4716 rcu_read_lock();
4717 beacon_ies = rcu_dereference(req->bss->beacon_ies);
826262c3 4718
c65dd147
EG		 4719 if (sdata->local->hw.flags & IEEE80211_HW_NEED_DTIM_BEFORE_ASSOC &&
4720 !beacon_ies) {
4721 /*
4722 * Wait up to one beacon interval ...
4723 * should this be more if we miss one?
4724 */
4725 sdata_info(sdata, "waiting for beacon from %pM\n",
4726 ifmgd->bssid);
4727 assoc_data->timeout = TU_TO_EXP_TIME(req->bss->beacon_interval);
89afe614 4728 assoc_data->timeout_started = true;
c65dd147
EG		 4729 assoc_data->need_beacon = true;
4730 } else if (beacon_ies) {
4731 const u8 *tim_ie = cfg80211_find_ie(WLAN_EID_TIM,
4732 beacon_ies->data,
4733 beacon_ies->len);
ef429dad
JB		 4734 u8 dtim_count = 0;
4735
c65dd147
EG		 4736 if (tim_ie && tim_ie[1] >= sizeof(struct ieee80211_tim_ie)) {
4737 const struct ieee80211_tim_ie *tim;
4738 tim = (void *)(tim_ie + 2);
4739 ifmgd->dtim_period = tim->dtim_period;
ef429dad 4740 dtim_count = tim->dtim_count;
826262c3 4741 }
989c6505 4742 ifmgd->have_beacon = true;
66e67e41 4743 assoc_data->timeout = jiffies;
89afe614 4744 assoc_data->timeout_started = true;
ef429dad
JB		 4745
4746 if (local->hw.flags & IEEE80211_HW_TIMING_BEACON_ONLY) {
4747 sdata->vif.bss_conf.sync_tsf = beacon_ies->tsf;
4748 sdata->vif.bss_conf.sync_device_ts =
4749 bss->device_ts_beacon;
4750 sdata->vif.bss_conf.sync_dtim_count = dtim_count;
4751 }
c65dd147
EG		 4752 } else {
4753 assoc_data->timeout = jiffies;
89afe614 4754 assoc_data->timeout_started = true;
66e67e41 4755 }
c65dd147
EG		 4756 rcu_read_unlock();
4757
8d61ffa5 4758 run_again(sdata, assoc_data->timeout);
66e67e41 4759
fcff4f10
PS		 4760 if (bss->corrupt_data) {
4761 char *corrupt_type = "data";
4762 if (bss->corrupt_data & IEEE80211_BSS_CORRUPT_BEACON) {
4763 if (bss->corrupt_data &
4764 IEEE80211_BSS_CORRUPT_PROBE_RESP)
4765 corrupt_type = "beacon and probe response";
4766 else
4767 corrupt_type = "beacon";
4768 } else if (bss->corrupt_data & IEEE80211_BSS_CORRUPT_PROBE_RESP)
4769 corrupt_type = "probe response";
bdcbd8e0
JB		 4770 sdata_info(sdata, "associating with AP with corrupt %s\n",
4771 corrupt_type);
fcff4f10
PS		 4772 }
4773
8d61ffa5 4774 return 0;
66e67e41 4775 err_clear:
3d2abdfd
EP		 4776 memset(ifmgd->bssid, 0, ETH_ALEN);
4777 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID);
66e67e41
JB		 4778 ifmgd->assoc_data = NULL;
4779 err_free:
4780 kfree(assoc_data);
66e67e41 4781 return err;
f0706e82
JB		 4782}
4783
77fdaa12 4784int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
63c9c5e7 4785 struct cfg80211_deauth_request *req)
f0706e82 4786{
46900298 4787 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
6ae16775 4788 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
6863255b 4789 bool tx = !req->local_state_change;
f0706e82 4790
c9c3a060
JB		 4791 if (ifmgd->auth_data &&
4792 ether_addr_equal(ifmgd->auth_data->bss->bssid, req->bssid)) {
4793 sdata_info(sdata,
4794 "aborting authentication with %pM by local choice (Reason: %u=%s)\n",
4795 req->bssid, req->reason_code,
4796 ieee80211_get_reason_code_string(req->reason_code));
0ff71613 4797
8c7d857c 4798 drv_mgd_prepare_tx(sdata->local, sdata);
37ad3888
JB		 4799 ieee80211_send_deauth_disassoc(sdata, req->bssid,
4800 IEEE80211_STYPE_DEAUTH,
6863255b 4801 req->reason_code, tx,
37ad3888 4802 frame_buf);
86552017 4803 ieee80211_destroy_auth_data(sdata, false);
c9c3a060
JB		 4804 cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf,
4805 IEEE80211_DEAUTH_FRAME_LEN);
86552017 4806
c9c3a060 4807 return 0;
8c7d857c
EG		 4808 }
4809
86552017
JB		 4810 if (ifmgd->associated &&
4811 ether_addr_equal(ifmgd->associated->bssid, req->bssid)) {
c9c3a060
JB		 4812 sdata_info(sdata,
4813 "deauthenticating from %pM by local choice (Reason: %u=%s)\n",
4814 req->bssid, req->reason_code,
4815 ieee80211_get_reason_code_string(req->reason_code));
4816
86552017
JB		 4817 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
4818 req->reason_code, tx, frame_buf);
6ff57cf8
JB		 4819 cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf,
4820 IEEE80211_DEAUTH_FRAME_LEN);
c9c3a060
JB		 4821 return 0;
4822 }
86552017 4823
c9c3a060 4824 return -ENOTCONN;
f0706e82 4825}
84363e6e 4826
77fdaa12 4827int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
63c9c5e7 4828 struct cfg80211_disassoc_request *req)
9c6bd790 4829{
77fdaa12 4830 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
e69e95db 4831 u8 bssid[ETH_ALEN];
6ae16775 4832 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
9c6bd790 4833
8d8b261a
JB		 4834 /*
4835 * cfg80211 should catch this ... but it's racy since
4836 * we can receive a disassoc frame, process it, hand it
4837 * to cfg80211 while that's in a locked section already
4838 * trying to tell us that the user wants to disconnect.
4839 */
8d61ffa5 4840 if (ifmgd->associated != req->bss)
77fdaa12 4841 return -ENOLINK;
77fdaa12 4842
bdcbd8e0 4843 sdata_info(sdata,
dfa1ad29
CO		 4844 "disassociating from %pM by local choice (Reason: %u=%s)\n",
4845 req->bss->bssid, req->reason_code, ieee80211_get_reason_code_string(req->reason_code));
0ff71613 4846
e69e95db 4847 memcpy(bssid, req->bss->bssid, ETH_ALEN);
37ad3888
JB		 4848 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DISASSOC,
4849 req->reason_code, !req->local_state_change,
4850 frame_buf);
10f644a4 4851
6ff57cf8
JB		 4852 cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf,
4853 IEEE80211_DEAUTH_FRAME_LEN);
bc83b681 4854
10f644a4
JB		 4855 return 0;
4856}
026331c4 4857
afa762f6 4858void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata)
54e4ffb2
JB		 4859{
4860 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4861
49921859
BG		 4862 /*
4863 * Make sure some work items will not run after this,
4864 * they will not do anything but might not have been
4865 * cancelled when disconnecting.
4866 */
4867 cancel_work_sync(&ifmgd->monitor_work);
4868 cancel_work_sync(&ifmgd->beacon_connection_loss_work);
4869 cancel_work_sync(&ifmgd->request_smps_work);
4870 cancel_work_sync(&ifmgd->csa_connection_drop_work);
4871 cancel_work_sync(&ifmgd->chswitch_work);
81dd2b88 4872 cancel_delayed_work_sync(&ifmgd->tdls_peer_del_work);
49921859 4873
8d61ffa5 4874 sdata_lock(sdata);
959867fa
JB		 4875 if (ifmgd->assoc_data) {
4876 struct cfg80211_bss *bss = ifmgd->assoc_data->bss;
54e4ffb2 4877 ieee80211_destroy_assoc_data(sdata, false);
959867fa
JB		 4878 cfg80211_assoc_timeout(sdata->dev, bss);
4879 }
54e4ffb2
JB		 4880 if (ifmgd->auth_data)
4881 ieee80211_destroy_auth_data(sdata, false);
1277b4a9
LK		 4882 spin_lock_bh(&ifmgd->teardown_lock);
4883 if (ifmgd->teardown_skb) {
4884 kfree_skb(ifmgd->teardown_skb);
4885 ifmgd->teardown_skb = NULL;
4886 ifmgd->orig_teardown_skb = NULL;
4887 }
4888 spin_unlock_bh(&ifmgd->teardown_lock);
54e4ffb2 4889 del_timer_sync(&ifmgd->timer);
8d61ffa5 4890 sdata_unlock(sdata);
54e4ffb2
JB		 4891}
4892
a97c13c3
JO		 4893void ieee80211_cqm_rssi_notify(struct ieee80211_vif *vif,
4894 enum nl80211_cqm_rssi_threshold_event rssi_event,
4895 gfp_t gfp)
4896{
4897 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
4898
b5878a2d
JB		 4899 trace_api_cqm_rssi_notify(sdata, rssi_event);
4900
a97c13c3
JO		 4901 cfg80211_cqm_rssi_notify(sdata->dev, rssi_event, gfp);
4902}
4903EXPORT_SYMBOL(ieee80211_cqm_rssi_notify);
Linux kernel - Deliverables
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