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