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Merge tag 'pci-v3.15-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaa...
[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>
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
12 */
13
5b323edb 14#include <linux/delay.h>
f0706e82
JB		 15#include <linux/if_ether.h>
16#include <linux/skbuff.h>
f0706e82 17#include <linux/if_arp.h>
f0706e82 18#include <linux/etherdevice.h>
d9b93842 19#include <linux/moduleparam.h>
d0709a65 20#include <linux/rtnetlink.h>
e8db0be1 21#include <linux/pm_qos.h>
d91f36db 22#include <linux/crc32.h>
5a0e3ad6 23#include <linux/slab.h>
bc3b2d7f 24#include <linux/export.h>
f0706e82 25#include <net/mac80211.h>
472dbc45 26#include <asm/unaligned.h>
60f8b39c 27
f0706e82 28#include "ieee80211_i.h"
24487981 29#include "driver-ops.h"
2c8dccc7
JB		 30#include "rate.h"
31#include "led.h"
f0706e82 32
1672c0e3 33#define IEEE80211_AUTH_TIMEOUT (HZ / 5)
cb236d2d 34#define IEEE80211_AUTH_TIMEOUT_LONG (HZ / 2)
1672c0e3
JB		 35#define IEEE80211_AUTH_TIMEOUT_SHORT (HZ / 10)
36#define IEEE80211_AUTH_MAX_TRIES 3
37#define IEEE80211_AUTH_WAIT_ASSOC (HZ * 5)
38#define IEEE80211_ASSOC_TIMEOUT (HZ / 5)
cb236d2d 39#define IEEE80211_ASSOC_TIMEOUT_LONG (HZ / 2)
1672c0e3
JB		 40#define IEEE80211_ASSOC_TIMEOUT_SHORT (HZ / 10)
41#define IEEE80211_ASSOC_MAX_TRIES 3
66e67e41 42
180205bd
BG		 43static int max_nullfunc_tries = 2;
44module_param(max_nullfunc_tries, int, 0644);
45MODULE_PARM_DESC(max_nullfunc_tries,
46 "Maximum nullfunc tx tries before disconnecting (reason 4).");
47
48static int max_probe_tries = 5;
49module_param(max_probe_tries, int, 0644);
50MODULE_PARM_DESC(max_probe_tries,
51 "Maximum probe tries before disconnecting (reason 4).");
b291ba11
JB		 52
53/*
7ccc8bd7
FF		 54 * Beacon loss timeout is calculated as N frames times the
55 * advertised beacon interval. This may need to be somewhat
56 * higher than what hardware might detect to account for
57 * delays in the host processing frames. But since we also
58 * probe on beacon miss before declaring the connection lost
59 * default to what we want.
b291ba11 60 */
59c1ec2b
BG		 61static int beacon_loss_count = 7;
62module_param(beacon_loss_count, int, 0644);
63MODULE_PARM_DESC(beacon_loss_count,
64 "Number of beacon intervals before we decide beacon was lost.");
7ccc8bd7 65
b291ba11
JB		 66/*
67 * Time the connection can be idle before we probe
68 * it to see if we can still talk to the AP.
69 */
d1c5091f 70#define IEEE80211_CONNECTION_IDLE_TIME (30 * HZ)
b291ba11
JB		 71/*
72 * Time we wait for a probe response after sending
73 * a probe request because of beacon loss or for
74 * checking the connection still works.
75 */
180205bd
BG		 76static int probe_wait_ms = 500;
77module_param(probe_wait_ms, int, 0644);
78MODULE_PARM_DESC(probe_wait_ms,
79 "Maximum time(ms) to wait for probe response"
80 " before disconnecting (reason 4).");
f0706e82 81
17e4ec14
JM		 82/*
83 * Weight given to the latest Beacon frame when calculating average signal
84 * strength for Beacon frames received in the current BSS. This must be
85 * between 1 and 15.
86 */
87#define IEEE80211_SIGNAL_AVE_WEIGHT 3
88
391a200a
JM		 89/*
90 * How many Beacon frames need to have been used in average signal strength
91 * before starting to indicate signal change events.
92 */
93#define IEEE80211_SIGNAL_AVE_MIN_COUNT 4
94
ca386f31
JB		 95/*
96 * We can have multiple work items (and connection probing)
97 * scheduling this timer, but we need to take care to only
98 * reschedule it when it should fire _earlier_ than it was
99 * asked for before, or if it's not pending right now. This
100 * function ensures that. Note that it then is required to
101 * run this function for all timeouts after the first one
102 * has happened -- the work that runs from this timer will
103 * do that.
104 */
8d61ffa5
JB		 105static void run_again(struct ieee80211_sub_if_data *sdata,
106 unsigned long timeout)
ca386f31 107{
8d61ffa5 108 sdata_assert_lock(sdata);
ca386f31 109
8d61ffa5
JB		 110 if (!timer_pending(&sdata->u.mgd.timer) ||
111 time_before(timeout, sdata->u.mgd.timer.expires))
112 mod_timer(&sdata->u.mgd.timer, timeout);
ca386f31
JB		 113}
114
d3a910a8 115void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata)
b291ba11 116{
c1288b12 117 if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER)
b291ba11
JB		 118 return;
119
7eeff74c
JB		 120 if (sdata->local->hw.flags & IEEE80211_HW_CONNECTION_MONITOR)
121 return;
122
b291ba11 123 mod_timer(&sdata->u.mgd.bcn_mon_timer,
7ccc8bd7 124 round_jiffies_up(jiffies + sdata->u.mgd.beacon_timeout));
b291ba11
JB		 125}
126
be099e82
LR		 127void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata)
128{
0c699c3a
LR		 129 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
130
8628172f
SG		 131 if (unlikely(!sdata->u.mgd.associated))
132 return;
133
be099e82
LR		 134 if (sdata->local->hw.flags & IEEE80211_HW_CONNECTION_MONITOR)
135 return;
136
137 mod_timer(&sdata->u.mgd.conn_mon_timer,
138 round_jiffies_up(jiffies + IEEE80211_CONNECTION_IDLE_TIME));
0c699c3a
LR		 139
140 ifmgd->probe_send_count = 0;
be099e82
LR		 141}
142
5484e237 143static int ecw2cw(int ecw)
60f8b39c 144{
5484e237 145 return (1 << ecw) - 1;
60f8b39c
JB		 146}
147
6565ec9b
JB		 148static u32
149ieee80211_determine_chantype(struct ieee80211_sub_if_data *sdata,
150 struct ieee80211_supported_band *sband,
151 struct ieee80211_channel *channel,
152 const struct ieee80211_ht_operation *ht_oper,
153 const struct ieee80211_vht_operation *vht_oper,
5cdaed1e 154 struct cfg80211_chan_def *chandef, bool tracking)
6565ec9b 155{
5cdaed1e 156 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
6565ec9b
JB		 157 struct cfg80211_chan_def vht_chandef;
158 u32 ht_cfreq, ret;
159
160 chandef->chan = channel;
161 chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
162 chandef->center_freq1 = channel->center_freq;
163 chandef->center_freq2 = 0;
164
165 if (!ht_oper || !sband->ht_cap.ht_supported) {
166 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
167 goto out;
168 }
169
170 chandef->width = NL80211_CHAN_WIDTH_20;
171
172 ht_cfreq = ieee80211_channel_to_frequency(ht_oper->primary_chan,
173 channel->band);
174 /* check that channel matches the right operating channel */
5cdaed1e 175 if (!tracking && channel->center_freq != ht_cfreq) {
6565ec9b
JB		 176 /*
177 * It's possible that some APs are confused here;
178 * Netgear WNDR3700 sometimes reports 4 higher than
179 * the actual channel in association responses, but
180 * since we look at probe response/beacon data here
181 * it should be OK.
182 */
5cdaed1e
JB		 183 sdata_info(sdata,
184 "Wrong control channel: center-freq: %d ht-cfreq: %d ht->primary_chan: %d band: %d - Disabling HT\n",
185 channel->center_freq, ht_cfreq,
186 ht_oper->primary_chan, channel->band);
6565ec9b
JB		 187 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
188 goto out;
189 }
190
191 /* check 40 MHz support, if we have it */
192 if (sband->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40) {
193 switch (ht_oper->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) {
194 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
195 chandef->width = NL80211_CHAN_WIDTH_40;
196 chandef->center_freq1 += 10;
197 break;
198 case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
199 chandef->width = NL80211_CHAN_WIDTH_40;
200 chandef->center_freq1 -= 10;
201 break;
202 }
203 } else {
204 /* 40 MHz (and 80 MHz) must be supported for VHT */
205 ret = IEEE80211_STA_DISABLE_VHT;
85220d71
JB		 206 /* also mark 40 MHz disabled */
207 ret |= IEEE80211_STA_DISABLE_40MHZ;
6565ec9b
JB		 208 goto out;
209 }
210
211 if (!vht_oper || !sband->vht_cap.vht_supported) {
212 ret = IEEE80211_STA_DISABLE_VHT;
213 goto out;
214 }
215
216 vht_chandef.chan = channel;
217 vht_chandef.center_freq1 =
218 ieee80211_channel_to_frequency(vht_oper->center_freq_seg1_idx,
219 channel->band);
220 vht_chandef.center_freq2 = 0;
221
6565ec9b
JB		 222 switch (vht_oper->chan_width) {
223 case IEEE80211_VHT_CHANWIDTH_USE_HT:
224 vht_chandef.width = chandef->width;
cb664981 225 vht_chandef.center_freq1 = chandef->center_freq1;
6565ec9b
JB		 226 break;
227 case IEEE80211_VHT_CHANWIDTH_80MHZ:
228 vht_chandef.width = NL80211_CHAN_WIDTH_80;
229 break;
230 case IEEE80211_VHT_CHANWIDTH_160MHZ:
231 vht_chandef.width = NL80211_CHAN_WIDTH_160;
232 break;
233 case IEEE80211_VHT_CHANWIDTH_80P80MHZ:
234 vht_chandef.width = NL80211_CHAN_WIDTH_80P80;
6553bf04
JB		 235 vht_chandef.center_freq2 =
236 ieee80211_channel_to_frequency(
237 vht_oper->center_freq_seg2_idx,
238 channel->band);
6565ec9b
JB		 239 break;
240 default:
5cdaed1e 241 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
30eb1dc2
JB		 242 sdata_info(sdata,
243 "AP VHT operation IE has invalid channel width (%d), disable VHT\n",
244 vht_oper->chan_width);
6565ec9b
JB		 245 ret = IEEE80211_STA_DISABLE_VHT;
246 goto out;
247 }
248
249 if (!cfg80211_chandef_valid(&vht_chandef)) {
5cdaed1e 250 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
30eb1dc2
JB		 251 sdata_info(sdata,
252 "AP VHT information is invalid, disable VHT\n");
6565ec9b
JB		 253 ret = IEEE80211_STA_DISABLE_VHT;
254 goto out;
255 }
256
257 if (cfg80211_chandef_identical(chandef, &vht_chandef)) {
258 ret = 0;
259 goto out;
260 }
261
262 if (!cfg80211_chandef_compatible(chandef, &vht_chandef)) {
5cdaed1e 263 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
30eb1dc2
JB		 264 sdata_info(sdata,
265 "AP VHT information doesn't match HT, disable VHT\n");
6565ec9b
JB		 266 ret = IEEE80211_STA_DISABLE_VHT;
267 goto out;
268 }
269
270 *chandef = vht_chandef;
271
272 ret = 0;
273
274out:
963a1852
JB		 275 /*
276 * When tracking the current AP, don't do any further checks if the
277 * new chandef is identical to the one we're currently using for the
278 * connection. This keeps us from playing ping-pong with regulatory,
279 * without it the following can happen (for example):
280 * - connect to an AP with 80 MHz, world regdom allows 80 MHz
281 * - AP advertises regdom US
282 * - CRDA loads regdom US with 80 MHz prohibited (old database)
283 * - the code below detects an unsupported channel, downgrades, and
284 * we disconnect from the AP in the caller
285 * - disconnect causes CRDA to reload world regdomain and the game
286 * starts anew.
287 * (see https://bugzilla.kernel.org/show_bug.cgi?id=70881)
288 *
289 * It seems possible that there are still scenarios with CSA or real
290 * bandwidth changes where a this could happen, but those cases are
291 * less common and wouldn't completely prevent using the AP.
292 */
293 if (tracking &&
294 cfg80211_chandef_identical(chandef, &sdata->vif.bss_conf.chandef))
295 return ret;
296
586e01ed
JB		 297 /* don't print the message below for VHT mismatch if VHT is disabled */
298 if (ret & IEEE80211_STA_DISABLE_VHT)
299 vht_chandef = *chandef;
300
ddfe49b4
JB		 301 /*
302 * Ignore the DISABLED flag when we're already connected and only
303 * tracking the APs beacon for bandwidth changes - otherwise we
304 * might get disconnected here if we connect to an AP, update our
305 * regulatory information based on the AP's country IE and the
306 * information we have is wrong/outdated and disables the channel
307 * that we're actually using for the connection to the AP.
308 */
6565ec9b 309 while (!cfg80211_chandef_usable(sdata->local->hw.wiphy, chandef,
ddfe49b4
JB		 310 tracking ? 0 :
311 IEEE80211_CHAN_DISABLED)) {
6565ec9b
JB		 312 if (WARN_ON(chandef->width == NL80211_CHAN_WIDTH_20_NOHT)) {
313 ret = IEEE80211_STA_DISABLE_HT |
314 IEEE80211_STA_DISABLE_VHT;
b56e4b85 315 break;
6565ec9b
JB		 316 }
317
e6b7cde4 318 ret |= ieee80211_chandef_downgrade(chandef);
6565ec9b
JB		 319 }
320
5cdaed1e 321 if (chandef->width != vht_chandef.width && !tracking)
6565ec9b
JB		 322 sdata_info(sdata,
323 "capabilities/regulatory prevented using AP HT/VHT configuration, downgraded\n");
324
325 WARN_ON_ONCE(!cfg80211_chandef_valid(chandef));
326 return ret;
327}
328
30eb1dc2
JB		 329static int ieee80211_config_bw(struct ieee80211_sub_if_data *sdata,
330 struct sta_info *sta,
331 const struct ieee80211_ht_operation *ht_oper,
332 const struct ieee80211_vht_operation *vht_oper,
333 const u8 *bssid, u32 *changed)
d5522e03
JB		 334{
335 struct ieee80211_local *local = sdata->local;
30eb1dc2 336 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
d5522e03 337 struct ieee80211_supported_band *sband;
55de908a 338 struct ieee80211_channel *chan;
30eb1dc2 339 struct cfg80211_chan_def chandef;
9ed6bcce 340 u16 ht_opmode;
30eb1dc2
JB		 341 u32 flags;
342 enum ieee80211_sta_rx_bandwidth new_sta_bw;
343 int ret;
d5522e03 344
30eb1dc2
JB		 345 /* if HT was/is disabled, don't track any bandwidth changes */
346 if (ifmgd->flags & IEEE80211_STA_DISABLE_HT || !ht_oper)
1128958d
JB		 347 return 0;
348
30eb1dc2
JB		 349 /* don't check VHT if we associated as non-VHT station */
350 if (ifmgd->flags & IEEE80211_STA_DISABLE_VHT)
351 vht_oper = NULL;
352
353 if (WARN_ON_ONCE(!sta))
354 return -EINVAL;
355
017b45bb
AA		 356 /*
357 * if bss configuration changed store the new one -
358 * this may be applicable even if channel is identical
359 */
360 ht_opmode = le16_to_cpu(ht_oper->operation_mode);
361 if (sdata->vif.bss_conf.ht_operation_mode != ht_opmode) {
362 *changed |= BSS_CHANGED_HT;
363 sdata->vif.bss_conf.ht_operation_mode = ht_opmode;
364 }
365
f2d9330e 366 chan = sdata->vif.bss_conf.chandef.chan;
55de908a 367 sband = local->hw.wiphy->bands[chan->band];
d5522e03 368
30eb1dc2
JB		 369 /* calculate new channel (type) based on HT/VHT operation IEs */
370 flags = ieee80211_determine_chantype(sdata, sband, chan, ht_oper,
5cdaed1e 371 vht_oper, &chandef, true);
30eb1dc2
JB		 372
373 /*
374 * Downgrade the new channel if we associated with restricted
375 * capabilities. For example, if we associated as a 20 MHz STA
376 * to a 40 MHz AP (due to regulatory, capabilities or config
377 * reasons) then switching to a 40 MHz channel now won't do us
378 * any good -- we couldn't use it with the AP.
379 */
380 if (ifmgd->flags & IEEE80211_STA_DISABLE_80P80MHZ &&
381 chandef.width == NL80211_CHAN_WIDTH_80P80)
e6b7cde4 382 flags |= ieee80211_chandef_downgrade(&chandef);
30eb1dc2
JB		 383 if (ifmgd->flags & IEEE80211_STA_DISABLE_160MHZ &&
384 chandef.width == NL80211_CHAN_WIDTH_160)
e6b7cde4 385 flags |= ieee80211_chandef_downgrade(&chandef);
30eb1dc2
JB		 386 if (ifmgd->flags & IEEE80211_STA_DISABLE_40MHZ &&
387 chandef.width > NL80211_CHAN_WIDTH_20)
e6b7cde4 388 flags |= ieee80211_chandef_downgrade(&chandef);
30eb1dc2
JB		 389
390 if (cfg80211_chandef_identical(&chandef, &sdata->vif.bss_conf.chandef))
391 return 0;
392
393 sdata_info(sdata,
394 "AP %pM changed bandwidth, new config is %d MHz, width %d (%d/%d MHz)\n",
395 ifmgd->bssid, chandef.chan->center_freq, chandef.width,
396 chandef.center_freq1, chandef.center_freq2);
397
398 if (flags != (ifmgd->flags & (IEEE80211_STA_DISABLE_HT |
399 IEEE80211_STA_DISABLE_VHT |
400 IEEE80211_STA_DISABLE_40MHZ |
401 IEEE80211_STA_DISABLE_80P80MHZ |
402 IEEE80211_STA_DISABLE_160MHZ)) ||
403 !cfg80211_chandef_valid(&chandef)) {
404 sdata_info(sdata,
405 "AP %pM changed bandwidth in a way we can't support - disconnect\n",
406 ifmgd->bssid);
407 return -EINVAL;
408 }
409
410 switch (chandef.width) {
411 case NL80211_CHAN_WIDTH_20_NOHT:
412 case NL80211_CHAN_WIDTH_20:
413 new_sta_bw = IEEE80211_STA_RX_BW_20;
414 break;
4bf88530 415 case NL80211_CHAN_WIDTH_40:
30eb1dc2 416 new_sta_bw = IEEE80211_STA_RX_BW_40;
64f68e5d 417 break;
30eb1dc2
JB		 418 case NL80211_CHAN_WIDTH_80:
419 new_sta_bw = IEEE80211_STA_RX_BW_80;
420 break;
421 case NL80211_CHAN_WIDTH_80P80:
422 case NL80211_CHAN_WIDTH_160:
423 new_sta_bw = IEEE80211_STA_RX_BW_160;
64f68e5d 424 break;
30eb1dc2
JB		 425 default:
426 return -EINVAL;
64f68e5d 427 }
d5522e03 428
30eb1dc2
JB		 429 if (new_sta_bw > sta->cur_max_bandwidth)
430 new_sta_bw = sta->cur_max_bandwidth;
64f68e5d 431
30eb1dc2
JB		 432 if (new_sta_bw < sta->sta.bandwidth) {
433 sta->sta.bandwidth = new_sta_bw;
434 rate_control_rate_update(local, sband, sta,
435 IEEE80211_RC_BW_CHANGED);
436 }
64f68e5d 437
30eb1dc2
JB		 438 ret = ieee80211_vif_change_bandwidth(sdata, &chandef, changed);
439 if (ret) {
440 sdata_info(sdata,
441 "AP %pM changed bandwidth to incompatible one - disconnect\n",
442 ifmgd->bssid);
443 return ret;
444 }
7cc44ed4 445
30eb1dc2
JB		 446 if (new_sta_bw > sta->sta.bandwidth) {
447 sta->sta.bandwidth = new_sta_bw;
448 rate_control_rate_update(local, sband, sta,
449 IEEE80211_RC_BW_CHANGED);
0aaffa9b 450 }
d5522e03 451
30eb1dc2 452 return 0;
d5522e03
JB		 453}
454
9c6bd790
JB		 455/* frame sending functions */
456
66e67e41 457static void ieee80211_add_ht_ie(struct ieee80211_sub_if_data *sdata,
9dde6423 458 struct sk_buff *skb, u8 ap_ht_param,
66e67e41
JB		 459 struct ieee80211_supported_band *sband,
460 struct ieee80211_channel *channel,
461 enum ieee80211_smps_mode smps)
462{
66e67e41
JB		 463 u8 *pos;
464 u32 flags = channel->flags;
465 u16 cap;
466 struct ieee80211_sta_ht_cap ht_cap;
467
468 BUILD_BUG_ON(sizeof(ht_cap) != sizeof(sband->ht_cap));
469
66e67e41
JB		 470 memcpy(&ht_cap, &sband->ht_cap, sizeof(ht_cap));
471 ieee80211_apply_htcap_overrides(sdata, &ht_cap);
472
66e67e41
JB		 473 /* determine capability flags */
474 cap = ht_cap.cap;
475
9dde6423 476 switch (ap_ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) {
66e67e41
JB		 477 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
478 if (flags & IEEE80211_CHAN_NO_HT40PLUS) {
479 cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
480 cap &= ~IEEE80211_HT_CAP_SGI_40;
481 }
482 break;
483 case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
484 if (flags & IEEE80211_CHAN_NO_HT40MINUS) {
485 cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
486 cap &= ~IEEE80211_HT_CAP_SGI_40;
487 }
488 break;
489 }
490
24398e39
JB		 491 /*
492 * If 40 MHz was disabled associate as though we weren't
493 * capable of 40 MHz -- some broken APs will never fall
494 * back to trying to transmit in 20 MHz.
495 */
496 if (sdata->u.mgd.flags & IEEE80211_STA_DISABLE_40MHZ) {
497 cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
498 cap &= ~IEEE80211_HT_CAP_SGI_40;
499 }
500
66e67e41
JB		 501 /* set SM PS mode properly */
502 cap &= ~IEEE80211_HT_CAP_SM_PS;
503 switch (smps) {
504 case IEEE80211_SMPS_AUTOMATIC:
505 case IEEE80211_SMPS_NUM_MODES:
506 WARN_ON(1);
507 case IEEE80211_SMPS_OFF:
508 cap |= WLAN_HT_CAP_SM_PS_DISABLED <<
509 IEEE80211_HT_CAP_SM_PS_SHIFT;
510 break;
511 case IEEE80211_SMPS_STATIC:
512 cap |= WLAN_HT_CAP_SM_PS_STATIC <<
513 IEEE80211_HT_CAP_SM_PS_SHIFT;
514 break;
515 case IEEE80211_SMPS_DYNAMIC:
516 cap |= WLAN_HT_CAP_SM_PS_DYNAMIC <<
517 IEEE80211_HT_CAP_SM_PS_SHIFT;
518 break;
519 }
520
521 /* reserve and fill IE */
522 pos = skb_put(skb, sizeof(struct ieee80211_ht_cap) + 2);
523 ieee80211_ie_build_ht_cap(pos, &ht_cap, cap);
524}
525
d545daba
MP		 526static void ieee80211_add_vht_ie(struct ieee80211_sub_if_data *sdata,
527 struct sk_buff *skb,
b08fbbd8
JB		 528 struct ieee80211_supported_band *sband,
529 struct ieee80211_vht_cap *ap_vht_cap)
d545daba
MP		 530{
531 u8 *pos;
532 u32 cap;
533 struct ieee80211_sta_vht_cap vht_cap;
534
535 BUILD_BUG_ON(sizeof(vht_cap) != sizeof(sband->vht_cap));
536
537 memcpy(&vht_cap, &sband->vht_cap, sizeof(vht_cap));
dd5ecfea 538 ieee80211_apply_vhtcap_overrides(sdata, &vht_cap);
d545daba
MP		 539
540 /* determine capability flags */
541 cap = vht_cap.cap;
542
f2d9d270
JB		 543 if (sdata->u.mgd.flags & IEEE80211_STA_DISABLE_80P80MHZ) {
544 cap &= ~IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ;
545 cap |= IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ;
546 }
547
548 if (sdata->u.mgd.flags & IEEE80211_STA_DISABLE_160MHZ) {
549 cap &= ~IEEE80211_VHT_CAP_SHORT_GI_160;
550 cap &= ~IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ;
551 }
552
b08fbbd8
JB		 553 /*
554 * Some APs apparently get confused if our capabilities are better
555 * than theirs, so restrict what we advertise in the assoc request.
556 */
557 if (!(ap_vht_cap->vht_cap_info &
558 cpu_to_le32(IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE)))
559 cap &= ~IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE;
560
d545daba 561 /* reserve and fill IE */
d4950281 562 pos = skb_put(skb, sizeof(struct ieee80211_vht_cap) + 2);
d545daba
MP		 563 ieee80211_ie_build_vht_cap(pos, &vht_cap, cap);
564}
565
66e67e41
JB		 566static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata)
567{
568 struct ieee80211_local *local = sdata->local;
569 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
570 struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data;
571 struct sk_buff *skb;
572 struct ieee80211_mgmt *mgmt;
573 u8 *pos, qos_info;
574 size_t offset = 0, noffset;
2103dec1 575 int i, count, rates_len, supp_rates_len, shift;
66e67e41
JB		 576 u16 capab;
577 struct ieee80211_supported_band *sband;
55de908a
JB		 578 struct ieee80211_chanctx_conf *chanctx_conf;
579 struct ieee80211_channel *chan;
2103dec1 580 u32 rate_flags, rates = 0;
66e67e41 581
8d61ffa5 582 sdata_assert_lock(sdata);
66e67e41 583
55de908a
JB		 584 rcu_read_lock();
585 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
586 if (WARN_ON(!chanctx_conf)) {
587 rcu_read_unlock();
588 return;
589 }
4bf88530 590 chan = chanctx_conf->def.chan;
2103dec1 591 rate_flags = ieee80211_chandef_rate_flags(&chanctx_conf->def);
55de908a
JB		 592 rcu_read_unlock();
593 sband = local->hw.wiphy->bands[chan->band];
2103dec1 594 shift = ieee80211_vif_get_shift(&sdata->vif);
66e67e41
JB		 595
596 if (assoc_data->supp_rates_len) {
597 /*
598 * Get all rates supported by the device and the AP as
599 * some APs don't like getting a superset of their rates
600 * in the association request (e.g. D-Link DAP 1353 in
601 * b-only mode)...
602 */
2103dec1
SW		 603 rates_len = ieee80211_parse_bitrates(&chanctx_conf->def, sband,
604 assoc_data->supp_rates,
605 assoc_data->supp_rates_len,
606 &rates);
66e67e41
JB		 607 } else {
608 /*
609 * In case AP not provide any supported rates information
610 * before association, we send information element(s) with
611 * all rates that we support.
612 */
2103dec1
SW		 613 rates_len = 0;
614 for (i = 0; i < sband->n_bitrates; i++) {
615 if ((rate_flags & sband->bitrates[i].flags)
616 != rate_flags)
617 continue;
618 rates |= BIT(i);
619 rates_len++;
620 }
66e67e41
JB		 621 }
622
623 skb = alloc_skb(local->hw.extra_tx_headroom +
624 sizeof(*mgmt) + /* bit too much but doesn't matter */
625 2 + assoc_data->ssid_len + /* SSID */
626 4 + rates_len + /* (extended) rates */
627 4 + /* power capability */
628 2 + 2 * sband->n_channels + /* supported channels */
629 2 + sizeof(struct ieee80211_ht_cap) + /* HT */
d4950281 630 2 + sizeof(struct ieee80211_vht_cap) + /* VHT */
66e67e41
JB		 631 assoc_data->ie_len + /* extra IEs */
632 9, /* WMM */
633 GFP_KERNEL);
634 if (!skb)
635 return;
636
637 skb_reserve(skb, local->hw.extra_tx_headroom);
638
639 capab = WLAN_CAPABILITY_ESS;
640
641 if (sband->band == IEEE80211_BAND_2GHZ) {
642 if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE))
643 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
644 if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE))
645 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
646 }
647
648 if (assoc_data->capability & WLAN_CAPABILITY_PRIVACY)
649 capab |= WLAN_CAPABILITY_PRIVACY;
650
651 if ((assoc_data->capability & WLAN_CAPABILITY_SPECTRUM_MGMT) &&
652 (local->hw.flags & IEEE80211_HW_SPECTRUM_MGMT))
653 capab |= WLAN_CAPABILITY_SPECTRUM_MGMT;
654
655 mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
656 memset(mgmt, 0, 24);
657 memcpy(mgmt->da, assoc_data->bss->bssid, ETH_ALEN);
658 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
659 memcpy(mgmt->bssid, assoc_data->bss->bssid, ETH_ALEN);
660
661 if (!is_zero_ether_addr(assoc_data->prev_bssid)) {
662 skb_put(skb, 10);
663 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
664 IEEE80211_STYPE_REASSOC_REQ);
665 mgmt->u.reassoc_req.capab_info = cpu_to_le16(capab);
666 mgmt->u.reassoc_req.listen_interval =
667 cpu_to_le16(local->hw.conf.listen_interval);
668 memcpy(mgmt->u.reassoc_req.current_ap, assoc_data->prev_bssid,
669 ETH_ALEN);
670 } else {
671 skb_put(skb, 4);
672 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
673 IEEE80211_STYPE_ASSOC_REQ);
674 mgmt->u.assoc_req.capab_info = cpu_to_le16(capab);
675 mgmt->u.assoc_req.listen_interval =
676 cpu_to_le16(local->hw.conf.listen_interval);
677 }
678
679 /* SSID */
680 pos = skb_put(skb, 2 + assoc_data->ssid_len);
681 *pos++ = WLAN_EID_SSID;
682 *pos++ = assoc_data->ssid_len;
683 memcpy(pos, assoc_data->ssid, assoc_data->ssid_len);
684
685 /* add all rates which were marked to be used above */
686 supp_rates_len = rates_len;
687 if (supp_rates_len > 8)
688 supp_rates_len = 8;
689
690 pos = skb_put(skb, supp_rates_len + 2);
691 *pos++ = WLAN_EID_SUPP_RATES;
692 *pos++ = supp_rates_len;
693
694 count = 0;
695 for (i = 0; i < sband->n_bitrates; i++) {
696 if (BIT(i) & rates) {
2103dec1
SW		 697 int rate = DIV_ROUND_UP(sband->bitrates[i].bitrate,
698 5 * (1 << shift));
699 *pos++ = (u8) rate;
66e67e41
JB		 700 if (++count == 8)
701 break;
702 }
703 }
704
705 if (rates_len > count) {
706 pos = skb_put(skb, rates_len - count + 2);
707 *pos++ = WLAN_EID_EXT_SUPP_RATES;
708 *pos++ = rates_len - count;
709
710 for (i++; i < sband->n_bitrates; i++) {
711 if (BIT(i) & rates) {
2103dec1
SW		 712 int rate;
713 rate = DIV_ROUND_UP(sband->bitrates[i].bitrate,
714 5 * (1 << shift));
715 *pos++ = (u8) rate;
66e67e41
JB		 716 }
717 }
718 }
719
720 if (capab & WLAN_CAPABILITY_SPECTRUM_MGMT) {
721 /* 1. power capabilities */
722 pos = skb_put(skb, 4);
723 *pos++ = WLAN_EID_PWR_CAPABILITY;
724 *pos++ = 2;
725 *pos++ = 0; /* min tx power */
0430c883
SW		 726 /* max tx power */
727 *pos++ = ieee80211_chandef_max_power(&chanctx_conf->def);
66e67e41
JB		 728
729 /* 2. supported channels */
730 /* TODO: get this in reg domain format */
731 pos = skb_put(skb, 2 * sband->n_channels + 2);
732 *pos++ = WLAN_EID_SUPPORTED_CHANNELS;
733 *pos++ = 2 * sband->n_channels;
734 for (i = 0; i < sband->n_channels; i++) {
735 *pos++ = ieee80211_frequency_to_channel(
736 sband->channels[i].center_freq);
737 *pos++ = 1; /* one channel in the subband*/
738 }
739 }
740
741 /* if present, add any custom IEs that go before HT */
b3f51e94 742 if (assoc_data->ie_len) {
66e67e41
JB		 743 static const u8 before_ht[] = {
744 WLAN_EID_SSID,
745 WLAN_EID_SUPP_RATES,
746 WLAN_EID_EXT_SUPP_RATES,
747 WLAN_EID_PWR_CAPABILITY,
748 WLAN_EID_SUPPORTED_CHANNELS,
749 WLAN_EID_RSN,
750 WLAN_EID_QOS_CAPA,
751 WLAN_EID_RRM_ENABLED_CAPABILITIES,
752 WLAN_EID_MOBILITY_DOMAIN,
753 WLAN_EID_SUPPORTED_REGULATORY_CLASSES,
754 };
755 noffset = ieee80211_ie_split(assoc_data->ie, assoc_data->ie_len,
756 before_ht, ARRAY_SIZE(before_ht),
757 offset);
758 pos = skb_put(skb, noffset - offset);
759 memcpy(pos, assoc_data->ie + offset, noffset - offset);
760 offset = noffset;
761 }
762
f2d9d270
JB		 763 if (WARN_ON_ONCE((ifmgd->flags & IEEE80211_STA_DISABLE_HT) &&
764 !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)))
765 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
766
a8243b72 767 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT))
9dde6423 768 ieee80211_add_ht_ie(sdata, skb, assoc_data->ap_ht_param,
04ecd257 769 sband, chan, sdata->smps_mode);
66e67e41 770
d545daba 771 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
b08fbbd8
JB		 772 ieee80211_add_vht_ie(sdata, skb, sband,
773 &assoc_data->ap_vht_cap);
d545daba 774
66e67e41 775 /* if present, add any custom non-vendor IEs that go after HT */
b3f51e94 776 if (assoc_data->ie_len) {
66e67e41
JB		 777 noffset = ieee80211_ie_split_vendor(assoc_data->ie,
778 assoc_data->ie_len,
779 offset);
780 pos = skb_put(skb, noffset - offset);
781 memcpy(pos, assoc_data->ie + offset, noffset - offset);
782 offset = noffset;
783 }
784
76f0303d
JB		 785 if (assoc_data->wmm) {
786 if (assoc_data->uapsd) {
dc41e4d4
EP		 787 qos_info = ifmgd->uapsd_queues;
788 qos_info |= (ifmgd->uapsd_max_sp_len <<
66e67e41
JB		 789 IEEE80211_WMM_IE_STA_QOSINFO_SP_SHIFT);
790 } else {
791 qos_info = 0;
792 }
793
794 pos = skb_put(skb, 9);
795 *pos++ = WLAN_EID_VENDOR_SPECIFIC;
796 *pos++ = 7; /* len */
797 *pos++ = 0x00; /* Microsoft OUI 00:50:F2 */
798 *pos++ = 0x50;
799 *pos++ = 0xf2;
800 *pos++ = 2; /* WME */
801 *pos++ = 0; /* WME info */
802 *pos++ = 1; /* WME ver */
803 *pos++ = qos_info;
804 }
805
806 /* add any remaining custom (i.e. vendor specific here) IEs */
b3f51e94 807 if (assoc_data->ie_len) {
66e67e41
JB		 808 noffset = assoc_data->ie_len;
809 pos = skb_put(skb, noffset - offset);
810 memcpy(pos, assoc_data->ie + offset, noffset - offset);
811 }
812
a1845fc7
JB		 813 drv_mgd_prepare_tx(local, sdata);
814
66e67e41 815 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
1672c0e3
JB		 816 if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)
817 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
818 IEEE80211_TX_INTFL_MLME_CONN_TX;
66e67e41
JB		 819 ieee80211_tx_skb(sdata, skb);
820}
821
572e0012
KV		 822void ieee80211_send_pspoll(struct ieee80211_local *local,
823 struct ieee80211_sub_if_data *sdata)
824{
572e0012
KV		 825 struct ieee80211_pspoll *pspoll;
826 struct sk_buff *skb;
572e0012 827
d8cd189e
KV		 828 skb = ieee80211_pspoll_get(&local->hw, &sdata->vif);
829 if (!skb)
572e0012 830 return;
572e0012 831
d8cd189e
KV		 832 pspoll = (struct ieee80211_pspoll *) skb->data;
833 pspoll->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
572e0012 834
62ae67be
JB		 835 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
836 ieee80211_tx_skb(sdata, skb);
572e0012
KV		 837}
838
965bedad
JB		 839void ieee80211_send_nullfunc(struct ieee80211_local *local,
840 struct ieee80211_sub_if_data *sdata,
841 int powersave)
842{
843 struct sk_buff *skb;
d8cd189e 844 struct ieee80211_hdr_3addr *nullfunc;
b6f35301 845 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
965bedad 846
d8cd189e
KV		 847 skb = ieee80211_nullfunc_get(&local->hw, &sdata->vif);
848 if (!skb)
965bedad 849 return;
965bedad 850
d8cd189e 851 nullfunc = (struct ieee80211_hdr_3addr *) skb->data;
965bedad 852 if (powersave)
d8cd189e 853 nullfunc->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
965bedad 854
6c17b77b
SF		 855 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT |
856 IEEE80211_TX_INTFL_OFFCHAN_TX_OK;
ff40b425
PF		 857
858 if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)
859 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS;
860
392b9ffb 861 if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL)
b6f35301
RM		 862 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_USE_MINRATE;
863
62ae67be 864 ieee80211_tx_skb(sdata, skb);
965bedad
JB		 865}
866
d524215f
FF		 867static void ieee80211_send_4addr_nullfunc(struct ieee80211_local *local,
868 struct ieee80211_sub_if_data *sdata)
869{
870 struct sk_buff *skb;
871 struct ieee80211_hdr *nullfunc;
872 __le16 fc;
873
874 if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
875 return;
876
877 skb = dev_alloc_skb(local->hw.extra_tx_headroom + 30);
d15b8459 878 if (!skb)
d524215f 879 return;
d15b8459 880
d524215f
FF		 881 skb_reserve(skb, local->hw.extra_tx_headroom);
882
883 nullfunc = (struct ieee80211_hdr *) skb_put(skb, 30);
884 memset(nullfunc, 0, 30);
885 fc = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC |
886 IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS);
887 nullfunc->frame_control = fc;
888 memcpy(nullfunc->addr1, sdata->u.mgd.bssid, ETH_ALEN);
889 memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
890 memcpy(nullfunc->addr3, sdata->u.mgd.bssid, ETH_ALEN);
891 memcpy(nullfunc->addr4, sdata->vif.addr, ETH_ALEN);
892
893 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
894 ieee80211_tx_skb(sdata, skb);
895}
896
cc32abd4
JB		 897/* spectrum management related things */
898static void ieee80211_chswitch_work(struct work_struct *work)
899{
900 struct ieee80211_sub_if_data *sdata =
901 container_of(work, struct ieee80211_sub_if_data, u.mgd.chswitch_work);
675a0b04 902 struct ieee80211_local *local = sdata->local;
cc32abd4 903 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
7578d575
AN		 904 u32 changed = 0;
905 int ret;
cc32abd4 906
9607e6b6 907 if (!ieee80211_sdata_running(sdata))
cc32abd4
JB		 908 return;
909
8d61ffa5 910 sdata_lock(sdata);
77fdaa12
JB		 911 if (!ifmgd->associated)
912 goto out;
cc32abd4 913
34a3740d 914 mutex_lock(&local->mtx);
33787fc4 915 ret = ieee80211_vif_change_channel(sdata, &changed);
34a3740d 916 mutex_unlock(&local->mtx);
7578d575
AN		 917 if (ret) {
918 sdata_info(sdata,
919 "vif channel switch failed, disconnecting\n");
920 ieee80211_queue_work(&sdata->local->hw,
921 &ifmgd->csa_connection_drop_work);
922 goto out;
923 }
675a0b04 924
7578d575 925 if (!local->use_chanctx) {
33787fc4 926 local->_oper_chandef = sdata->csa_chandef;
7578d575
AN		 927 /* Call "hw_config" only if doing sw channel switch.
928 * Otherwise update the channel directly
929 */
930 if (!local->ops->channel_switch)
931 ieee80211_hw_config(local, 0);
932 else
933 local->hw.conf.chandef = local->_oper_chandef;
5ce6e438 934 }
77fdaa12 935
cc32abd4 936 /* XXX: shouldn't really modify cfg80211-owned data! */
33787fc4 937 ifmgd->associated->channel = sdata->csa_chandef.chan;
cc32abd4 938
57eebdf3 939 /* XXX: wait for a beacon first? */
675a0b04 940 ieee80211_wake_queues_by_reason(&local->hw,
445ea4e8 941 IEEE80211_MAX_QUEUE_MAP,
cc32abd4 942 IEEE80211_QUEUE_STOP_REASON_CSA);
7578d575
AN		 943
944 ieee80211_bss_info_change_notify(sdata, changed);
945
77fdaa12 946 out:
7578d575 947 sdata->vif.csa_active = false;
77fdaa12 948 ifmgd->flags &= ~IEEE80211_STA_CSA_RECEIVED;
8d61ffa5 949 sdata_unlock(sdata);
cc32abd4
JB		 950}
951
5ce6e438
JB		 952void ieee80211_chswitch_done(struct ieee80211_vif *vif, bool success)
953{
55de908a
JB		 954 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
955 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
5ce6e438
JB		 956
957 trace_api_chswitch_done(sdata, success);
958 if (!success) {
882a7c69
JB		 959 sdata_info(sdata,
960 "driver channel switch failed, disconnecting\n");
961 ieee80211_queue_work(&sdata->local->hw,
962 &ifmgd->csa_connection_drop_work);
963 } else {
964 ieee80211_queue_work(&sdata->local->hw, &ifmgd->chswitch_work);
5ce6e438 965 }
5ce6e438
JB		 966}
967EXPORT_SYMBOL(ieee80211_chswitch_done);
968
cc32abd4
JB		 969static void ieee80211_chswitch_timer(unsigned long data)
970{
971 struct ieee80211_sub_if_data *sdata =
972 (struct ieee80211_sub_if_data *) data;
5bb644a0 973
9b7d72c1 974 ieee80211_queue_work(&sdata->local->hw, &sdata->u.mgd.chswitch_work);
cc32abd4
JB		 975}
976
37799e52 977static void
4a3cb702 978ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
04a161f4
JB		 979 u64 timestamp, struct ieee802_11_elems *elems,
980 bool beacon)
cc32abd4 981{
b4f286a1 982 struct ieee80211_local *local = sdata->local;
cc32abd4 983 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
37799e52 984 struct cfg80211_bss *cbss = ifmgd->associated;
55de908a 985 struct ieee80211_chanctx *chanctx;
e6b7cde4 986 enum ieee80211_band current_band;
c0f17eb9 987 struct ieee80211_csa_ie csa_ie;
e6b7cde4 988 int res;
cc32abd4 989
8d61ffa5 990 sdata_assert_lock(sdata);
77fdaa12 991
37799e52 992 if (!cbss)
cc32abd4
JB		 993 return;
994
b4f286a1 995 if (local->scanning)
cc32abd4
JB		 996 return;
997
37799e52 998 /* disregard subsequent announcements if we are already processing */
cc32abd4
JB		 999 if (ifmgd->flags & IEEE80211_STA_CSA_RECEIVED)
1000 return;
1001
e6b7cde4 1002 current_band = cbss->channel->band;
c0f17eb9 1003 memset(&csa_ie, 0, sizeof(csa_ie));
e6b7cde4
SW		 1004 res = ieee80211_parse_ch_switch_ie(sdata, elems, beacon, current_band,
1005 ifmgd->flags,
c0f17eb9 1006 ifmgd->associated->bssid, &csa_ie);
e6b7cde4 1007 if (res < 0)
b4f286a1 1008 ieee80211_queue_work(&local->hw,
882a7c69 1009 &ifmgd->csa_connection_drop_work);
e6b7cde4 1010 if (res)
cc32abd4 1011 return;
cd64f2a9 1012
c0f17eb9 1013 if (!cfg80211_chandef_usable(local->hw.wiphy, &csa_ie.chandef,
85220d71
JB		 1014 IEEE80211_CHAN_DISABLED)) {
1015 sdata_info(sdata,
1016 "AP %pM switches to unsupported channel (%d MHz, width:%d, CF1/2: %d/%d MHz), disconnecting\n",
e6b7cde4 1017 ifmgd->associated->bssid,
c0f17eb9
CYY		 1018 csa_ie.chandef.chan->center_freq,
1019 csa_ie.chandef.width, csa_ie.chandef.center_freq1,
1020 csa_ie.chandef.center_freq2);
85220d71
JB		 1021 ieee80211_queue_work(&local->hw,
1022 &ifmgd->csa_connection_drop_work);
1023 return;
1024 }
1025
57eebdf3 1026 ifmgd->flags |= IEEE80211_STA_CSA_RECEIVED;
7578d575 1027 sdata->vif.csa_active = true;
57eebdf3 1028
7578d575 1029 mutex_lock(&local->chanctx_mtx);
b4f286a1 1030 if (local->use_chanctx) {
7578d575
AN		 1031 u32 num_chanctx = 0;
1032 list_for_each_entry(chanctx, &local->chanctx_list, list)
1033 num_chanctx++;
1034
1035 if (num_chanctx > 1 ||
1036 !(local->hw.flags & IEEE80211_HW_CHANCTX_STA_CSA)) {
1037 sdata_info(sdata,
1038 "not handling chan-switch with channel contexts\n");
1039 ieee80211_queue_work(&local->hw,
1040 &ifmgd->csa_connection_drop_work);
1041 mutex_unlock(&local->chanctx_mtx);
1042 return;
1043 }
55de908a
JB		 1044 }
1045
55de908a 1046 if (WARN_ON(!rcu_access_pointer(sdata->vif.chanctx_conf))) {
7578d575
AN		 1047 ieee80211_queue_work(&local->hw,
1048 &ifmgd->csa_connection_drop_work);
b4f286a1 1049 mutex_unlock(&local->chanctx_mtx);
55de908a
JB		 1050 return;
1051 }
1052 chanctx = container_of(rcu_access_pointer(sdata->vif.chanctx_conf),
1053 struct ieee80211_chanctx, conf);
1054 if (chanctx->refcount > 1) {
1055 sdata_info(sdata,
1056 "channel switch with multiple interfaces on the same channel, disconnecting\n");
b4f286a1 1057 ieee80211_queue_work(&local->hw,
55de908a 1058 &ifmgd->csa_connection_drop_work);
b4f286a1 1059 mutex_unlock(&local->chanctx_mtx);
55de908a
JB		 1060 return;
1061 }
b4f286a1 1062 mutex_unlock(&local->chanctx_mtx);
55de908a 1063
33787fc4 1064 sdata->csa_chandef = csa_ie.chandef;
55de908a 1065
c0f17eb9 1066 if (csa_ie.mode)
b4f286a1 1067 ieee80211_stop_queues_by_reason(&local->hw,
445ea4e8 1068 IEEE80211_MAX_QUEUE_MAP,
57eebdf3
JB		 1069 IEEE80211_QUEUE_STOP_REASON_CSA);
1070
b4f286a1 1071 if (local->ops->channel_switch) {
5ce6e438 1072 /* use driver's channel switch callback */
57eebdf3
JB		 1073 struct ieee80211_channel_switch ch_switch = {
1074 .timestamp = timestamp,
c0f17eb9
CYY		 1075 .block_tx = csa_ie.mode,
1076 .chandef = csa_ie.chandef,
1077 .count = csa_ie.count,
57eebdf3
JB		 1078 };
1079
b4f286a1 1080 drv_channel_switch(local, &ch_switch);
5ce6e438
JB		 1081 return;
1082 }
1083
1084 /* channel switch handled in software */
c0f17eb9 1085 if (csa_ie.count <= 1)
b4f286a1 1086 ieee80211_queue_work(&local->hw, &ifmgd->chswitch_work);
57eebdf3 1087 else
cc32abd4 1088 mod_timer(&ifmgd->chswitch_timer,
c0f17eb9 1089 TU_TO_EXP_TIME(csa_ie.count * cbss->beacon_interval));
cc32abd4
JB		 1090}
1091
1ea6f9c0
JB		 1092static u32 ieee80211_handle_pwr_constr(struct ieee80211_sub_if_data *sdata,
1093 struct ieee80211_channel *channel,
1094 const u8 *country_ie, u8 country_ie_len,
1095 const u8 *pwr_constr_elem)
cc32abd4 1096{
04b7b2ff
JB		 1097 struct ieee80211_country_ie_triplet *triplet;
1098 int chan = ieee80211_frequency_to_channel(channel->center_freq);
1099 int i, chan_pwr, chan_increment, new_ap_level;
1100 bool have_chan_pwr = false;
cc32abd4 1101
04b7b2ff
JB		 1102 /* Invalid IE */
1103 if (country_ie_len % 2 || country_ie_len < IEEE80211_COUNTRY_IE_MIN_LEN)
1ea6f9c0 1104 return 0;
cc32abd4 1105
04b7b2ff
JB		 1106 triplet = (void *)(country_ie + 3);
1107 country_ie_len -= 3;
1108
1109 switch (channel->band) {
1110 default:
1111 WARN_ON_ONCE(1);
1112 /* fall through */
1113 case IEEE80211_BAND_2GHZ:
1114 case IEEE80211_BAND_60GHZ:
1115 chan_increment = 1;
1116 break;
1117 case IEEE80211_BAND_5GHZ:
1118 chan_increment = 4;
1119 break;
cc32abd4 1120 }
04b7b2ff
JB		 1121
1122 /* find channel */
1123 while (country_ie_len >= 3) {
1124 u8 first_channel = triplet->chans.first_channel;
1125
1126 if (first_channel >= IEEE80211_COUNTRY_EXTENSION_ID)
1127 goto next;
1128
1129 for (i = 0; i < triplet->chans.num_channels; i++) {
1130 if (first_channel + i * chan_increment == chan) {
1131 have_chan_pwr = true;
1132 chan_pwr = triplet->chans.max_power;
1133 break;
1134 }
1135 }
1136 if (have_chan_pwr)
1137 break;
1138
1139 next:
1140 triplet++;
1141 country_ie_len -= 3;
1142 }
1143
1144 if (!have_chan_pwr)
1ea6f9c0 1145 return 0;
04b7b2ff
JB		 1146
1147 new_ap_level = max_t(int, 0, chan_pwr - *pwr_constr_elem);
1148
1ea6f9c0
JB		 1149 if (sdata->ap_power_level == new_ap_level)
1150 return 0;
04b7b2ff
JB		 1151
1152 sdata_info(sdata,
1153 "Limiting TX power to %d (%d - %d) dBm as advertised by %pM\n",
1154 new_ap_level, chan_pwr, *pwr_constr_elem,
1155 sdata->u.mgd.bssid);
1ea6f9c0
JB		 1156 sdata->ap_power_level = new_ap_level;
1157 if (__ieee80211_recalc_txpower(sdata))
1158 return BSS_CHANGED_TXPOWER;
1159 return 0;
cc32abd4
JB		 1160}
1161
965bedad
JB		 1162/* powersave */
1163static void ieee80211_enable_ps(struct ieee80211_local *local,
1164 struct ieee80211_sub_if_data *sdata)
1165{
1166 struct ieee80211_conf *conf = &local->hw.conf;
1167
d5edaedc
JB		 1168 /*
1169 * If we are scanning right now then the parameters will
1170 * take effect when scan finishes.
1171 */
fbe9c429 1172 if (local->scanning)
d5edaedc
JB		 1173 return;
1174
965bedad
JB		 1175 if (conf->dynamic_ps_timeout > 0 &&
1176 !(local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)) {
1177 mod_timer(&local->dynamic_ps_timer, jiffies +
1178 msecs_to_jiffies(conf->dynamic_ps_timeout));
1179 } else {
1180 if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK)
1181 ieee80211_send_nullfunc(local, sdata, 1);
375177bf 1182
2a13052f
JO		 1183 if ((local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) &&
1184 (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS))
1185 return;
1186
1187 conf->flags |= IEEE80211_CONF_PS;
1188 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
965bedad
JB		 1189 }
1190}
1191
1192static void ieee80211_change_ps(struct ieee80211_local *local)
1193{
1194 struct ieee80211_conf *conf = &local->hw.conf;
1195
1196 if (local->ps_sdata) {
965bedad
JB		 1197 ieee80211_enable_ps(local, local->ps_sdata);
1198 } else if (conf->flags & IEEE80211_CONF_PS) {
1199 conf->flags &= ~IEEE80211_CONF_PS;
1200 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1201 del_timer_sync(&local->dynamic_ps_timer);
1202 cancel_work_sync(&local->dynamic_ps_enable_work);
1203 }
1204}
1205
808118cb
JY		 1206static bool ieee80211_powersave_allowed(struct ieee80211_sub_if_data *sdata)
1207{
1208 struct ieee80211_if_managed *mgd = &sdata->u.mgd;
1209 struct sta_info *sta = NULL;
c2c98fde 1210 bool authorized = false;
808118cb
JY		 1211
1212 if (!mgd->powersave)
1213 return false;
1214
05cb9108
JB		 1215 if (mgd->broken_ap)
1216 return false;
1217
808118cb
JY		 1218 if (!mgd->associated)
1219 return false;
1220
392b9ffb 1221 if (mgd->flags & IEEE80211_STA_CONNECTION_POLL)
808118cb
JY		 1222 return false;
1223
989c6505 1224 if (!mgd->have_beacon)
ce857888
AB		 1225 return false;
1226
808118cb
JY		 1227 rcu_read_lock();
1228 sta = sta_info_get(sdata, mgd->bssid);
1229 if (sta)
c2c98fde 1230 authorized = test_sta_flag(sta, WLAN_STA_AUTHORIZED);
808118cb
JY		 1231 rcu_read_unlock();
1232
c2c98fde 1233 return authorized;
808118cb
JY		 1234}
1235
965bedad 1236/* need to hold RTNL or interface lock */
10f644a4 1237void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency)
965bedad
JB		 1238{
1239 struct ieee80211_sub_if_data *sdata, *found = NULL;
1240 int count = 0;
195e294d 1241 int timeout;
965bedad
JB		 1242
1243 if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS)) {
1244 local->ps_sdata = NULL;
1245 return;
1246 }
1247
1248 list_for_each_entry(sdata, &local->interfaces, list) {
9607e6b6 1249 if (!ieee80211_sdata_running(sdata))
965bedad 1250 continue;
8c7914de
RM		 1251 if (sdata->vif.type == NL80211_IFTYPE_AP) {
1252 /* If an AP vif is found, then disable PS
1253 * by setting the count to zero thereby setting
1254 * ps_sdata to NULL.
1255 */
1256 count = 0;
1257 break;
1258 }
965bedad
JB		 1259 if (sdata->vif.type != NL80211_IFTYPE_STATION)
1260 continue;
1261 found = sdata;
1262 count++;
1263 }
1264
808118cb 1265 if (count == 1 && ieee80211_powersave_allowed(found)) {
10f644a4
JB		 1266 s32 beaconint_us;
1267
1268 if (latency < 0)
ed77134b 1269 latency = pm_qos_request(PM_QOS_NETWORK_LATENCY);
10f644a4
JB		 1270
1271 beaconint_us = ieee80211_tu_to_usec(
1272 found->vif.bss_conf.beacon_int);
1273
ff616381 1274 timeout = local->dynamic_ps_forced_timeout;
195e294d
JO		 1275 if (timeout < 0) {
1276 /*
ff616381
JO		 1277 * Go to full PSM if the user configures a very low
1278 * latency requirement.
0ab82b04
EP		 1279 * The 2000 second value is there for compatibility
1280 * until the PM_QOS_NETWORK_LATENCY is configured
1281 * with real values.
195e294d 1282 */
0ab82b04
EP		 1283 if (latency > (1900 * USEC_PER_MSEC) &&
1284 latency != (2000 * USEC_PER_SEC))
195e294d 1285 timeout = 0;
ff616381
JO		 1286 else
1287 timeout = 100;
195e294d 1288 }
09b85568 1289 local->hw.conf.dynamic_ps_timeout = timeout;
195e294d 1290
04fe2037 1291 if (beaconint_us > latency) {
10f644a4 1292 local->ps_sdata = NULL;
04fe2037 1293 } else {
04fe2037 1294 int maxslp = 1;
826262c3 1295 u8 dtimper = found->u.mgd.dtim_period;
56007a02
JB		 1296
1297 /* If the TIM IE is invalid, pretend the value is 1 */
1298 if (!dtimper)
1299 dtimper = 1;
1300 else if (dtimper > 1)
04fe2037
JB		 1301 maxslp = min_t(int, dtimper,
1302 latency / beaconint_us);
1303
9ccebe61 1304 local->hw.conf.max_sleep_period = maxslp;
56007a02 1305 local->hw.conf.ps_dtim_period = dtimper;
10f644a4 1306 local->ps_sdata = found;
04fe2037 1307 }
10f644a4 1308 } else {
965bedad 1309 local->ps_sdata = NULL;
10f644a4 1310 }
965bedad
JB		 1311
1312 ieee80211_change_ps(local);
1313}
1314
ab095877
EP		 1315void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata)
1316{
1317 bool ps_allowed = ieee80211_powersave_allowed(sdata);
1318
1319 if (sdata->vif.bss_conf.ps != ps_allowed) {
1320 sdata->vif.bss_conf.ps = ps_allowed;
1321 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_PS);
1322 }
1323}
1324
965bedad
JB		 1325void ieee80211_dynamic_ps_disable_work(struct work_struct *work)
1326{
1327 struct ieee80211_local *local =
1328 container_of(work, struct ieee80211_local,
1329 dynamic_ps_disable_work);
1330
1331 if (local->hw.conf.flags & IEEE80211_CONF_PS) {
1332 local->hw.conf.flags &= ~IEEE80211_CONF_PS;
1333 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1334 }
1335
1336 ieee80211_wake_queues_by_reason(&local->hw,
445ea4e8 1337 IEEE80211_MAX_QUEUE_MAP,
965bedad
JB		 1338 IEEE80211_QUEUE_STOP_REASON_PS);
1339}
1340
1341void ieee80211_dynamic_ps_enable_work(struct work_struct *work)
1342{
1343 struct ieee80211_local *local =
1344 container_of(work, struct ieee80211_local,
1345 dynamic_ps_enable_work);
1346 struct ieee80211_sub_if_data *sdata = local->ps_sdata;
5e34069c 1347 struct ieee80211_if_managed *ifmgd;
1ddc2867
RM		 1348 unsigned long flags;
1349 int q;
965bedad
JB		 1350
1351 /* can only happen when PS was just disabled anyway */
1352 if (!sdata)
1353 return;
1354
5e34069c
CL		 1355 ifmgd = &sdata->u.mgd;
1356
965bedad
JB		 1357 if (local->hw.conf.flags & IEEE80211_CONF_PS)
1358 return;
1359
09b85568 1360 if (local->hw.conf.dynamic_ps_timeout > 0) {
77b7023a
AN		 1361 /* don't enter PS if TX frames are pending */
1362 if (drv_tx_frames_pending(local)) {
1ddc2867
RM		 1363 mod_timer(&local->dynamic_ps_timer, jiffies +
1364 msecs_to_jiffies(
1365 local->hw.conf.dynamic_ps_timeout));
1366 return;
1367 }
77b7023a
AN		 1368
1369 /*
1370 * transmission can be stopped by others which leads to
1371 * dynamic_ps_timer expiry. Postpone the ps timer if it
1372 * is not the actual idle state.
1373 */
1374 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
1375 for (q = 0; q < local->hw.queues; q++) {
1376 if (local->queue_stop_reasons[q]) {
1377 spin_unlock_irqrestore(&local->queue_stop_reason_lock,
1378 flags);
1379 mod_timer(&local->dynamic_ps_timer, jiffies +
1380 msecs_to_jiffies(
1381 local->hw.conf.dynamic_ps_timeout));
1382 return;
1383 }
1384 }
1385 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
1ddc2867 1386 }
1ddc2867 1387
375177bf 1388 if ((local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) &&
9c38a8b4 1389 !(ifmgd->flags & IEEE80211_STA_NULLFUNC_ACKED)) {
a1598383 1390 if (drv_tx_frames_pending(local)) {
e8306f98
VN		 1391 mod_timer(&local->dynamic_ps_timer, jiffies +
1392 msecs_to_jiffies(
1393 local->hw.conf.dynamic_ps_timeout));
a1598383 1394 } else {
e8306f98
VN		 1395 ieee80211_send_nullfunc(local, sdata, 1);
1396 /* Flush to get the tx status of nullfunc frame */
39ecc01d 1397 ieee80211_flush_queues(local, sdata);
e8306f98 1398 }
f3e85b9e
VN		 1399 }
1400
2a13052f
JO		 1401 if (!((local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) &&
1402 (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK)) ||
375177bf
VN		 1403 (ifmgd->flags & IEEE80211_STA_NULLFUNC_ACKED)) {
1404 ifmgd->flags &= ~IEEE80211_STA_NULLFUNC_ACKED;
1405 local->hw.conf.flags |= IEEE80211_CONF_PS;
1406 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1407 }
965bedad
JB		 1408}
1409
1410void ieee80211_dynamic_ps_timer(unsigned long data)
1411{
1412 struct ieee80211_local *local = (void *) data;
1413
78f1a8b7 1414 if (local->quiescing || local->suspended)
5bb644a0
JB		 1415 return;
1416
42935eca 1417 ieee80211_queue_work(&local->hw, &local->dynamic_ps_enable_work);
965bedad
JB		 1418}
1419
164eb02d
SW		 1420void ieee80211_dfs_cac_timer_work(struct work_struct *work)
1421{
1422 struct delayed_work *delayed_work =
1423 container_of(work, struct delayed_work, work);
1424 struct ieee80211_sub_if_data *sdata =
1425 container_of(delayed_work, struct ieee80211_sub_if_data,
1426 dfs_cac_timer_work);
d2859df5 1427 struct cfg80211_chan_def chandef = sdata->vif.bss_conf.chandef;
164eb02d 1428
34a3740d
JB		 1429 mutex_lock(&sdata->local->mtx);
1430 if (sdata->wdev.cac_started) {
1431 ieee80211_vif_release_channel(sdata);
1432 cfg80211_cac_event(sdata->dev, &chandef,
1433 NL80211_RADAR_CAC_FINISHED,
1434 GFP_KERNEL);
1435 }
1436 mutex_unlock(&sdata->local->mtx);
164eb02d
SW		 1437}
1438
60f8b39c 1439/* MLME */
7d25745d 1440static bool ieee80211_sta_wmm_params(struct ieee80211_local *local,
4ced3f74 1441 struct ieee80211_sub_if_data *sdata,
4a3cb702 1442 const u8 *wmm_param, size_t wmm_param_len)
f0706e82 1443{
f0706e82 1444 struct ieee80211_tx_queue_params params;
4ced3f74 1445 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
f0706e82
JB		 1446 size_t left;
1447 int count;
4a3cb702
JB		 1448 const u8 *pos;
1449 u8 uapsd_queues = 0;
f0706e82 1450
e1b3ec1a 1451 if (!local->ops->conf_tx)
7d25745d 1452 return false;
e1b3ec1a 1453
32c5057b 1454 if (local->hw.queues < IEEE80211_NUM_ACS)
7d25745d 1455 return false;
3434fbd3
JB		 1456
1457 if (!wmm_param)
7d25745d 1458 return false;
3434fbd3 1459
f0706e82 1460 if (wmm_param_len < 8 || wmm_param[5] /* version */ != 1)
7d25745d 1461 return false;
ab13315a
KV		 1462
1463 if (ifmgd->flags & IEEE80211_STA_UAPSD_ENABLED)
dc41e4d4 1464 uapsd_queues = ifmgd->uapsd_queues;
ab13315a 1465
f0706e82 1466 count = wmm_param[6] & 0x0f;
46900298 1467 if (count == ifmgd->wmm_last_param_set)
7d25745d 1468 return false;
46900298 1469 ifmgd->wmm_last_param_set = count;
f0706e82
JB		 1470
1471 pos = wmm_param + 8;
1472 left = wmm_param_len - 8;
1473
1474 memset(&params, 0, sizeof(params));
1475
00e96dec 1476 sdata->wmm_acm = 0;
f0706e82
JB		 1477 for (; left >= 4; left -= 4, pos += 4) {
1478 int aci = (pos[0] >> 5) & 0x03;
1479 int acm = (pos[0] >> 4) & 0x01;
ab13315a 1480 bool uapsd = false;
f0706e82
JB		 1481 int queue;
1482
1483 switch (aci) {
0eeb59fe 1484 case 1: /* AC_BK */
e100bb64 1485 queue = 3;
988c0f72 1486 if (acm)
00e96dec 1487 sdata->wmm_acm |= BIT(1) | BIT(2); /* BK/- */
ab13315a
KV		 1488 if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BK)
1489 uapsd = true;
f0706e82 1490 break;
0eeb59fe 1491 case 2: /* AC_VI */
e100bb64 1492 queue = 1;
988c0f72 1493 if (acm)
00e96dec 1494 sdata->wmm_acm |= BIT(4) | BIT(5); /* CL/VI */
ab13315a
KV		 1495 if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VI)
1496 uapsd = true;
f0706e82 1497 break;
0eeb59fe 1498 case 3: /* AC_VO */
e100bb64 1499 queue = 0;
988c0f72 1500 if (acm)
00e96dec 1501 sdata->wmm_acm |= BIT(6) | BIT(7); /* VO/NC */
ab13315a
KV		 1502 if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VO)
1503 uapsd = true;
f0706e82 1504 break;
0eeb59fe 1505 case 0: /* AC_BE */
f0706e82 1506 default:
e100bb64 1507 queue = 2;
988c0f72 1508 if (acm)
00e96dec 1509 sdata->wmm_acm |= BIT(0) | BIT(3); /* BE/EE */
ab13315a
KV		 1510 if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BE)
1511 uapsd = true;
f0706e82
JB		 1512 break;
1513 }
1514
1515 params.aifs = pos[0] & 0x0f;
1516 params.cw_max = ecw2cw((pos[1] & 0xf0) >> 4);
1517 params.cw_min = ecw2cw(pos[1] & 0x0f);
f434b2d1 1518 params.txop = get_unaligned_le16(pos + 2);
908f8d07 1519 params.acm = acm;
ab13315a
KV		 1520 params.uapsd = uapsd;
1521
bdcbd8e0
JB		 1522 mlme_dbg(sdata,
1523 "WMM queue=%d aci=%d acm=%d aifs=%d cWmin=%d cWmax=%d txop=%d uapsd=%d\n",
1524 queue, aci, acm,
1525 params.aifs, params.cw_min, params.cw_max,
1526 params.txop, params.uapsd);
f6f3def3
EP		 1527 sdata->tx_conf[queue] = params;
1528 if (drv_conf_tx(local, sdata, queue, &params))
bdcbd8e0
JB		 1529 sdata_err(sdata,
1530 "failed to set TX queue parameters for queue %d\n",
1531 queue);
f0706e82 1532 }
e1b3ec1a
SG		 1533
1534 /* enable WMM or activate new settings */
4ced3f74 1535 sdata->vif.bss_conf.qos = true;
7d25745d 1536 return true;
f0706e82
JB		 1537}
1538
925e64c3
SG		 1539static void __ieee80211_stop_poll(struct ieee80211_sub_if_data *sdata)
1540{
1541 lockdep_assert_held(&sdata->local->mtx);
1542
392b9ffb 1543 sdata->u.mgd.flags &= ~IEEE80211_STA_CONNECTION_POLL;
925e64c3
SG		 1544 ieee80211_run_deferred_scan(sdata->local);
1545}
1546
1547static void ieee80211_stop_poll(struct ieee80211_sub_if_data *sdata)
1548{
1549 mutex_lock(&sdata->local->mtx);
1550 __ieee80211_stop_poll(sdata);
1551 mutex_unlock(&sdata->local->mtx);
1552}
1553
7a5158ef
JB		 1554static u32 ieee80211_handle_bss_capability(struct ieee80211_sub_if_data *sdata,
1555 u16 capab, bool erp_valid, u8 erp)
5628221c 1556{
bda3933a 1557 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
471b3efd 1558 u32 changed = 0;
7a5158ef
JB		 1559 bool use_protection;
1560 bool use_short_preamble;
1561 bool use_short_slot;
1562
1563 if (erp_valid) {
1564 use_protection = (erp & WLAN_ERP_USE_PROTECTION) != 0;
1565 use_short_preamble = (erp & WLAN_ERP_BARKER_PREAMBLE) == 0;
1566 } else {
1567 use_protection = false;
1568 use_short_preamble = !!(capab & WLAN_CAPABILITY_SHORT_PREAMBLE);
1569 }
1570
1571 use_short_slot = !!(capab & WLAN_CAPABILITY_SHORT_SLOT_TIME);
55de908a 1572 if (ieee80211_get_sdata_band(sdata) == IEEE80211_BAND_5GHZ)
43d35343 1573 use_short_slot = true;
5628221c 1574
471b3efd 1575 if (use_protection != bss_conf->use_cts_prot) {
471b3efd
JB		 1576 bss_conf->use_cts_prot = use_protection;
1577 changed |= BSS_CHANGED_ERP_CTS_PROT;
5628221c 1578 }
7e9ed188 1579
d43c7b37 1580 if (use_short_preamble != bss_conf->use_short_preamble) {
d43c7b37 1581 bss_conf->use_short_preamble = use_short_preamble;
471b3efd 1582 changed |= BSS_CHANGED_ERP_PREAMBLE;
7e9ed188 1583 }
d9430a32 1584
7a5158ef 1585 if (use_short_slot != bss_conf->use_short_slot) {
7a5158ef
JB		 1586 bss_conf->use_short_slot = use_short_slot;
1587 changed |= BSS_CHANGED_ERP_SLOT;
50c4afb9
JL		 1588 }
1589
1590 return changed;
1591}
1592
f698d856 1593static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata,
0c1ad2ca 1594 struct cfg80211_bss *cbss,
ae5eb026 1595 u32 bss_info_changed)
f0706e82 1596{
0c1ad2ca 1597 struct ieee80211_bss *bss = (void *)cbss->priv;
471b3efd 1598 struct ieee80211_local *local = sdata->local;
68542962 1599 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
d6f2da5b 1600
ae5eb026 1601 bss_info_changed |= BSS_CHANGED_ASSOC;
77fdaa12 1602 bss_info_changed |= ieee80211_handle_bss_capability(sdata,
50ae34a2 1603 bss_conf->assoc_capability, bss->has_erp_value, bss->erp_value);
21c0cbe7 1604
7ccc8bd7 1605 sdata->u.mgd.beacon_timeout = usecs_to_jiffies(ieee80211_tu_to_usec(
59c1ec2b 1606 beacon_loss_count * bss_conf->beacon_int));
7ccc8bd7 1607
0c1ad2ca
JB		 1608 sdata->u.mgd.associated = cbss;
1609 memcpy(sdata->u.mgd.bssid, cbss->bssid, ETH_ALEN);
f0706e82 1610
17e4ec14
JM		 1611 sdata->u.mgd.flags |= IEEE80211_STA_RESET_SIGNAL_AVE;
1612
488dd7b5 1613 if (sdata->vif.p2p) {
9caf0364 1614 const struct cfg80211_bss_ies *ies;
488dd7b5 1615
9caf0364
JB		 1616 rcu_read_lock();
1617 ies = rcu_dereference(cbss->ies);
1618 if (ies) {
9caf0364
JB		 1619 int ret;
1620
1621 ret = cfg80211_get_p2p_attr(
1622 ies->data, ies->len,
1623 IEEE80211_P2P_ATTR_ABSENCE_NOTICE,
67baf663
JD		 1624 (u8 *) &bss_conf->p2p_noa_attr,
1625 sizeof(bss_conf->p2p_noa_attr));
9caf0364 1626 if (ret >= 2) {
67baf663
JD		 1627 sdata->u.mgd.p2p_noa_index =
1628 bss_conf->p2p_noa_attr.index;
9caf0364 1629 bss_info_changed |= BSS_CHANGED_P2P_PS;
9caf0364 1630 }
488dd7b5 1631 }
9caf0364 1632 rcu_read_unlock();
488dd7b5
JB		 1633 }
1634
b291ba11 1635 /* just to be sure */
925e64c3 1636 ieee80211_stop_poll(sdata);
b291ba11 1637
9ac19a90 1638 ieee80211_led_assoc(local, 1);
9306102e 1639
989c6505 1640 if (sdata->u.mgd.have_beacon) {
826262c3
JB		 1641 /*
1642 * If the AP is buggy we may get here with no DTIM period
1643 * known, so assume it's 1 which is the only safe assumption
1644 * in that case, although if the TIM IE is broken powersave
1645 * probably just won't work at all.
1646 */
1647 bss_conf->dtim_period = sdata->u.mgd.dtim_period ?: 1;
817cee76 1648 bss_conf->beacon_rate = bss->beacon_rate;
989c6505 1649 bss_info_changed |= BSS_CHANGED_BEACON_INFO;
826262c3 1650 } else {
817cee76 1651 bss_conf->beacon_rate = NULL;
e5b900d2 1652 bss_conf->dtim_period = 0;
826262c3 1653 }
e5b900d2 1654
68542962 1655 bss_conf->assoc = 1;
9cef8737 1656
a97c13c3 1657 /* Tell the driver to monitor connection quality (if supported) */
ea086359 1658 if (sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI &&
68542962 1659 bss_conf->cqm_rssi_thold)
a97c13c3
JO		 1660 bss_info_changed |= BSS_CHANGED_CQM;
1661
68542962 1662 /* Enable ARP filtering */
0f19b41e 1663 if (bss_conf->arp_addr_cnt)
68542962 1664 bss_info_changed |= BSS_CHANGED_ARP_FILTER;
68542962 1665
ae5eb026 1666 ieee80211_bss_info_change_notify(sdata, bss_info_changed);
f0706e82 1667
056508dc
JB		 1668 mutex_lock(&local->iflist_mtx);
1669 ieee80211_recalc_ps(local, -1);
1670 mutex_unlock(&local->iflist_mtx);
e0cb686f 1671
04ecd257 1672 ieee80211_recalc_smps(sdata);
ab095877
EP		 1673 ieee80211_recalc_ps_vif(sdata);
1674
9ac19a90 1675 netif_carrier_on(sdata->dev);
f0706e82
JB		 1676}
1677
e69e95db 1678static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata,
37ad3888
JB		 1679 u16 stype, u16 reason, bool tx,
1680 u8 *frame_buf)
aa458d17 1681{
46900298 1682 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
aa458d17 1683 struct ieee80211_local *local = sdata->local;
3cc5240b 1684 u32 changed = 0;
aa458d17 1685
8d61ffa5 1686 sdata_assert_lock(sdata);
77fdaa12 1687
37ad3888
JB		 1688 if (WARN_ON_ONCE(tx && !frame_buf))
1689 return;
1690
b291ba11
JB		 1691 if (WARN_ON(!ifmgd->associated))
1692 return;
1693
79543d8e
DS		 1694 ieee80211_stop_poll(sdata);
1695
77fdaa12 1696 ifmgd->associated = NULL;
aa458d17
TW		 1697 netif_carrier_off(sdata->dev);
1698
88bc40e8
EP		 1699 /*
1700 * if we want to get out of ps before disassoc (why?) we have
1701 * to do it before sending disassoc, as otherwise the null-packet
1702 * won't be valid.
1703 */
1704 if (local->hw.conf.flags & IEEE80211_CONF_PS) {
1705 local->hw.conf.flags &= ~IEEE80211_CONF_PS;
1706 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1707 }
1708 local->ps_sdata = NULL;
1709
ab095877
EP		 1710 /* disable per-vif ps */
1711 ieee80211_recalc_ps_vif(sdata);
1712
f823981e
EP		 1713 /* flush out any pending frame (e.g. DELBA) before deauth/disassoc */
1714 if (tx)
39ecc01d 1715 ieee80211_flush_queues(local, sdata);
f823981e 1716
37ad3888
JB		 1717 /* deauthenticate/disassociate now */
1718 if (tx || frame_buf)
88a9e31c
EP		 1719 ieee80211_send_deauth_disassoc(sdata, ifmgd->bssid, stype,
1720 reason, tx, frame_buf);
37ad3888
JB		 1721
1722 /* flush out frame */
1723 if (tx)
39ecc01d 1724 ieee80211_flush_queues(local, sdata);
37ad3888 1725
88a9e31c
EP		 1726 /* clear bssid only after building the needed mgmt frames */
1727 memset(ifmgd->bssid, 0, ETH_ALEN);
1728
37ad3888 1729 /* remove AP and TDLS peers */
d34ba216 1730 sta_info_flush(sdata);
37ad3888
JB		 1731
1732 /* finally reset all BSS / config parameters */
f5e5bf25
TW		 1733 changed |= ieee80211_reset_erp_info(sdata);
1734
f5e5bf25 1735 ieee80211_led_assoc(local, 0);
ae5eb026
JB		 1736 changed |= BSS_CHANGED_ASSOC;
1737 sdata->vif.bss_conf.assoc = false;
f5e5bf25 1738
67baf663
JD		 1739 ifmgd->p2p_noa_index = -1;
1740 memset(&sdata->vif.bss_conf.p2p_noa_attr, 0,
1741 sizeof(sdata->vif.bss_conf.p2p_noa_attr));
488dd7b5 1742
dd5ecfea 1743 /* on the next assoc, re-program HT/VHT parameters */
ef96a842
BG		 1744 memset(&ifmgd->ht_capa, 0, sizeof(ifmgd->ht_capa));
1745 memset(&ifmgd->ht_capa_mask, 0, sizeof(ifmgd->ht_capa_mask));
dd5ecfea
JB		 1746 memset(&ifmgd->vht_capa, 0, sizeof(ifmgd->vht_capa));
1747 memset(&ifmgd->vht_capa_mask, 0, sizeof(ifmgd->vht_capa_mask));
413ad50a 1748
1ea6f9c0 1749 sdata->ap_power_level = IEEE80211_UNSET_POWER_LEVEL;
a8302de9 1750
520eb820
KV		 1751 del_timer_sync(&local->dynamic_ps_timer);
1752 cancel_work_sync(&local->dynamic_ps_enable_work);
1753
68542962 1754 /* Disable ARP filtering */
0f19b41e 1755 if (sdata->vif.bss_conf.arp_addr_cnt)
68542962 1756 changed |= BSS_CHANGED_ARP_FILTER;
68542962 1757
3abead59
JB		 1758 sdata->vif.bss_conf.qos = false;
1759 changed |= BSS_CHANGED_QOS;
1760
0aaffa9b
JB		 1761 /* The BSSID (not really interesting) and HT changed */
1762 changed |= BSS_CHANGED_BSSID | BSS_CHANGED_HT;
ae5eb026 1763 ieee80211_bss_info_change_notify(sdata, changed);
8e268e47 1764
3abead59
JB		 1765 /* disassociated - set to defaults now */
1766 ieee80211_set_wmm_default(sdata, false);
1767
b9dcf712
JB		 1768 del_timer_sync(&sdata->u.mgd.conn_mon_timer);
1769 del_timer_sync(&sdata->u.mgd.bcn_mon_timer);
1770 del_timer_sync(&sdata->u.mgd.timer);
1771 del_timer_sync(&sdata->u.mgd.chswitch_timer);
2d9957cc 1772
826262c3 1773 sdata->vif.bss_conf.dtim_period = 0;
817cee76
AB		 1774 sdata->vif.bss_conf.beacon_rate = NULL;
1775
989c6505 1776 ifmgd->have_beacon = false;
826262c3 1777
028e8da0 1778 ifmgd->flags = 0;
34a3740d 1779 mutex_lock(&local->mtx);
028e8da0 1780 ieee80211_vif_release_channel(sdata);
34a3740d 1781 mutex_unlock(&local->mtx);
2475b1cc
MS		 1782
1783 sdata->encrypt_headroom = IEEE80211_ENCRYPT_HEADROOM;
aa458d17 1784}
f0706e82 1785
3cf335d5
KV		 1786void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
1787 struct ieee80211_hdr *hdr)
1788{
1789 /*
1790 * We can postpone the mgd.timer whenever receiving unicast frames
1791 * from AP because we know that the connection is working both ways
1792 * at that time. But multicast frames (and hence also beacons) must
1793 * be ignored here, because we need to trigger the timer during
b291ba11
JB		 1794 * data idle periods for sending the periodic probe request to the
1795 * AP we're connected to.
3cf335d5 1796 */
b291ba11
JB		 1797 if (is_multicast_ether_addr(hdr->addr1))
1798 return;
1799
be099e82 1800 ieee80211_sta_reset_conn_monitor(sdata);
3cf335d5 1801}
f0706e82 1802
4e5ff376
FF		 1803static void ieee80211_reset_ap_probe(struct ieee80211_sub_if_data *sdata)
1804{
1805 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
133d40f9 1806 struct ieee80211_local *local = sdata->local;
4e5ff376 1807
133d40f9 1808 mutex_lock(&local->mtx);
392b9ffb
SG		 1809 if (!(ifmgd->flags & IEEE80211_STA_CONNECTION_POLL))
1810 goto out;
4e5ff376 1811
925e64c3 1812 __ieee80211_stop_poll(sdata);
133d40f9
SG		 1813
1814 mutex_lock(&local->iflist_mtx);
1815 ieee80211_recalc_ps(local, -1);
1816 mutex_unlock(&local->iflist_mtx);
4e5ff376
FF		 1817
1818 if (sdata->local->hw.flags & IEEE80211_HW_CONNECTION_MONITOR)
133d40f9 1819 goto out;
4e5ff376
FF		 1820
1821 /*
1822 * We've received a probe response, but are not sure whether
1823 * we have or will be receiving any beacons or data, so let's
1824 * schedule the timers again, just in case.
1825 */
1826 ieee80211_sta_reset_beacon_monitor(sdata);
1827
1828 mod_timer(&ifmgd->conn_mon_timer,
1829 round_jiffies_up(jiffies +
1830 IEEE80211_CONNECTION_IDLE_TIME));
133d40f9 1831out:
133d40f9 1832 mutex_unlock(&local->mtx);
4e5ff376
FF		 1833}
1834
1835void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
04ac3c0e 1836 struct ieee80211_hdr *hdr, bool ack)
4e5ff376 1837{
75706d0e 1838 if (!ieee80211_is_data(hdr->frame_control))
4e5ff376
FF		 1839 return;
1840
4e5ff376
FF		 1841 if (ieee80211_is_nullfunc(hdr->frame_control) &&
1842 sdata->u.mgd.probe_send_count > 0) {
04ac3c0e 1843 if (ack)
cab1c7fd 1844 ieee80211_sta_reset_conn_monitor(sdata);
04ac3c0e
FF		 1845 else
1846 sdata->u.mgd.nullfunc_failed = true;
4e5ff376 1847 ieee80211_queue_work(&sdata->local->hw, &sdata->work);
cab1c7fd 1848 return;
4e5ff376 1849 }
cab1c7fd
WD		 1850
1851 if (ack)
1852 ieee80211_sta_reset_conn_monitor(sdata);
4e5ff376
FF		 1853}
1854
a43abf29
ML		 1855static void ieee80211_mgd_probe_ap_send(struct ieee80211_sub_if_data *sdata)
1856{
1857 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
1858 const u8 *ssid;
f01a067d 1859 u8 *dst = ifmgd->associated->bssid;
180205bd 1860 u8 unicast_limit = max(1, max_probe_tries - 3);
f01a067d
LR		 1861
1862 /*
1863 * Try sending broadcast probe requests for the last three
1864 * probe requests after the first ones failed since some
1865 * buggy APs only support broadcast probe requests.
1866 */
1867 if (ifmgd->probe_send_count >= unicast_limit)
1868 dst = NULL;
a43abf29 1869
4e5ff376
FF		 1870 /*
1871 * When the hardware reports an accurate Tx ACK status, it's
1872 * better to send a nullfunc frame instead of a probe request,
1873 * as it will kick us off the AP quickly if we aren't associated
1874 * anymore. The timeout will be reset if the frame is ACKed by
1875 * the AP.
1876 */
992e68bf
SD		 1877 ifmgd->probe_send_count++;
1878
04ac3c0e
FF		 1879 if (sdata->local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) {
1880 ifmgd->nullfunc_failed = false;
4e5ff376 1881 ieee80211_send_nullfunc(sdata->local, sdata, 0);
04ac3c0e 1882 } else {
88c868c4
SG		 1883 int ssid_len;
1884
9caf0364 1885 rcu_read_lock();
4e5ff376 1886 ssid = ieee80211_bss_get_ie(ifmgd->associated, WLAN_EID_SSID);
88c868c4
SG		 1887 if (WARN_ON_ONCE(ssid == NULL))
1888 ssid_len = 0;
1889 else
1890 ssid_len = ssid[1];
1891
1892 ieee80211_send_probe_req(sdata, dst, ssid + 2, ssid_len, NULL,
1672c0e3 1893 0, (u32) -1, true, 0,
55de908a 1894 ifmgd->associated->channel, false);
9caf0364 1895 rcu_read_unlock();
4e5ff376 1896 }
a43abf29 1897
180205bd 1898 ifmgd->probe_timeout = jiffies + msecs_to_jiffies(probe_wait_ms);
8d61ffa5 1899 run_again(sdata, ifmgd->probe_timeout);
f69b9c79 1900 if (sdata->local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)
39ecc01d 1901 ieee80211_flush_queues(sdata->local, sdata);
a43abf29
ML		 1902}
1903
b291ba11
JB		 1904static void ieee80211_mgd_probe_ap(struct ieee80211_sub_if_data *sdata,
1905 bool beacon)
04de8381 1906{
04de8381 1907 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
b291ba11 1908 bool already = false;
34bfc411 1909
9607e6b6 1910 if (!ieee80211_sdata_running(sdata))
0e2b6286
JB		 1911 return;
1912
8d61ffa5 1913 sdata_lock(sdata);
77fdaa12
JB		 1914
1915 if (!ifmgd->associated)
1916 goto out;
1917
133d40f9
SG		 1918 mutex_lock(&sdata->local->mtx);
1919
1920 if (sdata->local->tmp_channel || sdata->local->scanning) {
1921 mutex_unlock(&sdata->local->mtx);
1922 goto out;
1923 }
1924
a13fbe54 1925 if (beacon) {
bdcbd8e0 1926 mlme_dbg_ratelimited(sdata,
59c1ec2b
BG		 1927 "detected beacon loss from AP (missed %d beacons) - probing\n",
1928 beacon_loss_count);
bdcbd8e0 1929
a13fbe54
BG		 1930 ieee80211_cqm_rssi_notify(&sdata->vif,
1931 NL80211_CQM_RSSI_BEACON_LOSS_EVENT,
1932 GFP_KERNEL);
1933 }
04de8381 1934
b291ba11
JB		 1935 /*
1936 * The driver/our work has already reported this event or the
1937 * connection monitoring has kicked in and we have already sent
1938 * a probe request. Or maybe the AP died and the driver keeps
1939 * reporting until we disassociate...
1940 *
1941 * In either case we have to ignore the current call to this
1942 * function (except for setting the correct probe reason bit)
1943 * because otherwise we would reset the timer every time and
1944 * never check whether we received a probe response!
1945 */
392b9ffb 1946 if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL)
b291ba11
JB		 1947 already = true;
1948
12b5f34d
EP		 1949 ifmgd->flags |= IEEE80211_STA_CONNECTION_POLL;
1950
133d40f9
SG		 1951 mutex_unlock(&sdata->local->mtx);
1952
b291ba11
JB		 1953 if (already)
1954 goto out;
1955
4e751843
JB		 1956 mutex_lock(&sdata->local->iflist_mtx);
1957 ieee80211_recalc_ps(sdata->local, -1);
1958 mutex_unlock(&sdata->local->iflist_mtx);
1959
a43abf29
ML		 1960 ifmgd->probe_send_count = 0;
1961 ieee80211_mgd_probe_ap_send(sdata);
77fdaa12 1962 out:
8d61ffa5 1963 sdata_unlock(sdata);
04de8381
KV		 1964}
1965
a619a4c0
JO		 1966struct sk_buff *ieee80211_ap_probereq_get(struct ieee80211_hw *hw,
1967 struct ieee80211_vif *vif)
1968{
1969 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
1970 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
d9b3b28b 1971 struct cfg80211_bss *cbss;
a619a4c0
JO		 1972 struct sk_buff *skb;
1973 const u8 *ssid;
88c868c4 1974 int ssid_len;
a619a4c0
JO		 1975
1976 if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
1977 return NULL;
1978
8d61ffa5 1979 sdata_assert_lock(sdata);
a619a4c0 1980
d9b3b28b
EP		 1981 if (ifmgd->associated)
1982 cbss = ifmgd->associated;
1983 else if (ifmgd->auth_data)
1984 cbss = ifmgd->auth_data->bss;
1985 else if (ifmgd->assoc_data)
1986 cbss = ifmgd->assoc_data->bss;
1987 else
a619a4c0
JO		 1988 return NULL;
1989
9caf0364 1990 rcu_read_lock();
d9b3b28b 1991 ssid = ieee80211_bss_get_ie(cbss, WLAN_EID_SSID);
88c868c4
SG		 1992 if (WARN_ON_ONCE(ssid == NULL))
1993 ssid_len = 0;
1994 else
1995 ssid_len = ssid[1];
1996
d9b3b28b 1997 skb = ieee80211_build_probe_req(sdata, cbss->bssid,
55de908a 1998 (u32) -1, cbss->channel,
6b77863b 1999 ssid + 2, ssid_len,
85a237fe 2000 NULL, 0, true);
9caf0364 2001 rcu_read_unlock();
a619a4c0
JO		 2002
2003 return skb;
2004}
2005EXPORT_SYMBOL(ieee80211_ap_probereq_get);
2006
eef9e54c 2007static void __ieee80211_disconnect(struct ieee80211_sub_if_data *sdata)
1e4dcd01
JO		 2008{
2009 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
6ae16775 2010 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
1e4dcd01 2011
8d61ffa5 2012 sdata_lock(sdata);
1e4dcd01 2013 if (!ifmgd->associated) {
8d61ffa5 2014 sdata_unlock(sdata);
1e4dcd01
JO		 2015 return;
2016 }
2017
37ad3888
JB		 2018 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
2019 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY,
eef9e54c 2020 true, frame_buf);
882a7c69 2021 ifmgd->flags &= ~IEEE80211_STA_CSA_RECEIVED;
7578d575 2022 sdata->vif.csa_active = false;
5b36ebd8 2023 ieee80211_wake_queues_by_reason(&sdata->local->hw,
445ea4e8 2024 IEEE80211_MAX_QUEUE_MAP,
5b36ebd8 2025 IEEE80211_QUEUE_STOP_REASON_CSA);
7da7cc1d 2026
6ff57cf8
JB		 2027 cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf,
2028 IEEE80211_DEAUTH_FRAME_LEN);
8d61ffa5 2029 sdata_unlock(sdata);
1e4dcd01
JO		 2030}
2031
cc74c0c7 2032static void ieee80211_beacon_connection_loss_work(struct work_struct *work)
b291ba11
JB		 2033{
2034 struct ieee80211_sub_if_data *sdata =
2035 container_of(work, struct ieee80211_sub_if_data,
1e4dcd01 2036 u.mgd.beacon_connection_loss_work);
a85e1d55
PS		 2037 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2038 struct sta_info *sta;
2039
2040 if (ifmgd->associated) {
30fa9047 2041 rcu_read_lock();
a85e1d55
PS		 2042 sta = sta_info_get(sdata, ifmgd->bssid);
2043 if (sta)
2044 sta->beacon_loss_count++;
30fa9047 2045 rcu_read_unlock();
a85e1d55 2046 }
b291ba11 2047
682bd38b 2048 if (ifmgd->connection_loss) {
882a7c69
JB		 2049 sdata_info(sdata, "Connection to AP %pM lost\n",
2050 ifmgd->bssid);
eef9e54c 2051 __ieee80211_disconnect(sdata);
882a7c69 2052 } else {
1e4dcd01 2053 ieee80211_mgd_probe_ap(sdata, true);
882a7c69
JB		 2054 }
2055}
2056
2057static void ieee80211_csa_connection_drop_work(struct work_struct *work)
2058{
2059 struct ieee80211_sub_if_data *sdata =
2060 container_of(work, struct ieee80211_sub_if_data,
2061 u.mgd.csa_connection_drop_work);
2062
eef9e54c 2063 __ieee80211_disconnect(sdata);
b291ba11
JB		 2064}
2065
04de8381
KV		 2066void ieee80211_beacon_loss(struct ieee80211_vif *vif)
2067{
2068 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
1e4dcd01 2069 struct ieee80211_hw *hw = &sdata->local->hw;
04de8381 2070
b5878a2d
JB		 2071 trace_api_beacon_loss(sdata);
2072
682bd38b 2073 sdata->u.mgd.connection_loss = false;
1e4dcd01 2074 ieee80211_queue_work(hw, &sdata->u.mgd.beacon_connection_loss_work);
04de8381
KV		 2075}
2076EXPORT_SYMBOL(ieee80211_beacon_loss);
2077
1e4dcd01
JO		 2078void ieee80211_connection_loss(struct ieee80211_vif *vif)
2079{
2080 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2081 struct ieee80211_hw *hw = &sdata->local->hw;
2082
b5878a2d
JB		 2083 trace_api_connection_loss(sdata);
2084
682bd38b 2085 sdata->u.mgd.connection_loss = true;
1e4dcd01
JO		 2086 ieee80211_queue_work(hw, &sdata->u.mgd.beacon_connection_loss_work);
2087}
2088EXPORT_SYMBOL(ieee80211_connection_loss);
2089
2090
66e67e41
JB		 2091static void ieee80211_destroy_auth_data(struct ieee80211_sub_if_data *sdata,
2092 bool assoc)
2093{
2094 struct ieee80211_mgd_auth_data *auth_data = sdata->u.mgd.auth_data;
2095
8d61ffa5 2096 sdata_assert_lock(sdata);
66e67e41 2097
66e67e41
JB		 2098 if (!assoc) {
2099 sta_info_destroy_addr(sdata, auth_data->bss->bssid);
2100
2101 memset(sdata->u.mgd.bssid, 0, ETH_ALEN);
2102 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID);
028e8da0 2103 sdata->u.mgd.flags = 0;
34a3740d 2104 mutex_lock(&sdata->local->mtx);
55de908a 2105 ieee80211_vif_release_channel(sdata);
34a3740d 2106 mutex_unlock(&sdata->local->mtx);
66e67e41
JB		 2107 }
2108
5b112d3d 2109 cfg80211_put_bss(sdata->local->hw.wiphy, auth_data->bss);
66e67e41
JB		 2110 kfree(auth_data);
2111 sdata->u.mgd.auth_data = NULL;
2112}
2113
2114static void ieee80211_auth_challenge(struct ieee80211_sub_if_data *sdata,
2115 struct ieee80211_mgmt *mgmt, size_t len)
2116{
1672c0e3 2117 struct ieee80211_local *local = sdata->local;
66e67e41
JB		 2118 struct ieee80211_mgd_auth_data *auth_data = sdata->u.mgd.auth_data;
2119 u8 *pos;
2120 struct ieee802_11_elems elems;
1672c0e3 2121 u32 tx_flags = 0;
66e67e41
JB		 2122
2123 pos = mgmt->u.auth.variable;
b2e506bf 2124 ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), false, &elems);
66e67e41
JB		 2125 if (!elems.challenge)
2126 return;
2127 auth_data->expected_transaction = 4;
a1845fc7 2128 drv_mgd_prepare_tx(sdata->local, sdata);
1672c0e3
JB		 2129 if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)
2130 tx_flags = IEEE80211_TX_CTL_REQ_TX_STATUS |
2131 IEEE80211_TX_INTFL_MLME_CONN_TX;
700e8ea6 2132 ieee80211_send_auth(sdata, 3, auth_data->algorithm, 0,
66e67e41
JB		 2133 elems.challenge - 2, elems.challenge_len + 2,
2134 auth_data->bss->bssid, auth_data->bss->bssid,
2135 auth_data->key, auth_data->key_len,
1672c0e3 2136 auth_data->key_idx, tx_flags);
66e67e41
JB		 2137}
2138
8d61ffa5
JB		 2139static void ieee80211_rx_mgmt_auth(struct ieee80211_sub_if_data *sdata,
2140 struct ieee80211_mgmt *mgmt, size_t len)
66e67e41
JB		 2141{
2142 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2143 u8 bssid[ETH_ALEN];
2144 u16 auth_alg, auth_transaction, status_code;
2145 struct sta_info *sta;
2146
8d61ffa5 2147 sdata_assert_lock(sdata);
66e67e41
JB		 2148
2149 if (len < 24 + 6)
8d61ffa5 2150 return;
66e67e41
JB		 2151
2152 if (!ifmgd->auth_data || ifmgd->auth_data->done)
8d61ffa5 2153 return;
66e67e41
JB		 2154
2155 memcpy(bssid, ifmgd->auth_data->bss->bssid, ETH_ALEN);
2156
b203ca39 2157 if (!ether_addr_equal(bssid, mgmt->bssid))
8d61ffa5 2158 return;
66e67e41
JB		 2159
2160 auth_alg = le16_to_cpu(mgmt->u.auth.auth_alg);
2161 auth_transaction = le16_to_cpu(mgmt->u.auth.auth_transaction);
2162 status_code = le16_to_cpu(mgmt->u.auth.status_code);
2163
2164 if (auth_alg != ifmgd->auth_data->algorithm ||
0f4126e8
JM		 2165 auth_transaction != ifmgd->auth_data->expected_transaction) {
2166 sdata_info(sdata, "%pM unexpected authentication state: alg %d (expected %d) transact %d (expected %d)\n",
2167 mgmt->sa, auth_alg, ifmgd->auth_data->algorithm,
2168 auth_transaction,
2169 ifmgd->auth_data->expected_transaction);
8d61ffa5 2170 return;
0f4126e8 2171 }
66e67e41
JB		 2172
2173 if (status_code != WLAN_STATUS_SUCCESS) {
bdcbd8e0
JB		 2174 sdata_info(sdata, "%pM denied authentication (status %d)\n",
2175 mgmt->sa, status_code);
dac211ec 2176 ieee80211_destroy_auth_data(sdata, false);
6ff57cf8 2177 cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len);
8d61ffa5 2178 return;
66e67e41
JB		 2179 }
2180
2181 switch (ifmgd->auth_data->algorithm) {
2182 case WLAN_AUTH_OPEN:
2183 case WLAN_AUTH_LEAP:
2184 case WLAN_AUTH_FT:
6b8ece3a 2185 case WLAN_AUTH_SAE:
66e67e41
JB		 2186 break;
2187 case WLAN_AUTH_SHARED_KEY:
2188 if (ifmgd->auth_data->expected_transaction != 4) {
2189 ieee80211_auth_challenge(sdata, mgmt, len);
2190 /* need another frame */
8d61ffa5 2191 return;
66e67e41
JB		 2192 }
2193 break;
2194 default:
2195 WARN_ONCE(1, "invalid auth alg %d",
2196 ifmgd->auth_data->algorithm);
8d61ffa5 2197 return;
66e67e41
JB		 2198 }
2199
bdcbd8e0 2200 sdata_info(sdata, "authenticated\n");
66e67e41
JB		 2201 ifmgd->auth_data->done = true;
2202 ifmgd->auth_data->timeout = jiffies + IEEE80211_AUTH_WAIT_ASSOC;
89afe614 2203 ifmgd->auth_data->timeout_started = true;
8d61ffa5 2204 run_again(sdata, ifmgd->auth_data->timeout);
66e67e41 2205
6b8ece3a
JM		 2206 if (ifmgd->auth_data->algorithm == WLAN_AUTH_SAE &&
2207 ifmgd->auth_data->expected_transaction != 2) {
2208 /*
2209 * Report auth frame to user space for processing since another
2210 * round of Authentication frames is still needed.
2211 */
6ff57cf8 2212 cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len);
8d61ffa5 2213 return;
6b8ece3a
JM		 2214 }
2215
66e67e41
JB		 2216 /* move station state to auth */
2217 mutex_lock(&sdata->local->sta_mtx);
2218 sta = sta_info_get(sdata, bssid);
2219 if (!sta) {
2220 WARN_ONCE(1, "%s: STA %pM not found", sdata->name, bssid);
2221 goto out_err;
2222 }
2223 if (sta_info_move_state(sta, IEEE80211_STA_AUTH)) {
bdcbd8e0 2224 sdata_info(sdata, "failed moving %pM to auth\n", bssid);
66e67e41
JB		 2225 goto out_err;
2226 }
2227 mutex_unlock(&sdata->local->sta_mtx);
2228
6ff57cf8 2229 cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len);
8d61ffa5 2230 return;
66e67e41
JB		 2231 out_err:
2232 mutex_unlock(&sdata->local->sta_mtx);
2233 /* ignore frame -- wait for timeout */
66e67e41
JB		 2234}
2235
2236
8d61ffa5
JB		 2237static void ieee80211_rx_mgmt_deauth(struct ieee80211_sub_if_data *sdata,
2238 struct ieee80211_mgmt *mgmt, size_t len)
f0706e82 2239{
46900298 2240 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
77fdaa12 2241 const u8 *bssid = NULL;
f0706e82
JB		 2242 u16 reason_code;
2243
8d61ffa5 2244 sdata_assert_lock(sdata);
66e67e41 2245
f4ea83dd 2246 if (len < 24 + 2)
8d61ffa5 2247 return;
f0706e82 2248
66e67e41 2249 if (!ifmgd->associated ||
b203ca39 2250 !ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid))
8d61ffa5 2251 return;
77fdaa12 2252
0c1ad2ca 2253 bssid = ifmgd->associated->bssid;
f0706e82
JB		 2254
2255 reason_code = le16_to_cpu(mgmt->u.deauth.reason_code);
2256
bdcbd8e0
JB		 2257 sdata_info(sdata, "deauthenticated from %pM (Reason: %u)\n",
2258 bssid, reason_code);
77fdaa12 2259
37ad3888
JB		 2260 ieee80211_set_disassoc(sdata, 0, 0, false, NULL);
2261
6ff57cf8 2262 cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len);
f0706e82
JB		 2263}
2264
2265
8d61ffa5
JB		 2266static void ieee80211_rx_mgmt_disassoc(struct ieee80211_sub_if_data *sdata,
2267 struct ieee80211_mgmt *mgmt, size_t len)
f0706e82 2268{
46900298 2269 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
f0706e82
JB		 2270 u16 reason_code;
2271
8d61ffa5 2272 sdata_assert_lock(sdata);
77fdaa12 2273
66e67e41 2274 if (len < 24 + 2)
8d61ffa5 2275 return;
77fdaa12 2276
66e67e41 2277 if (!ifmgd->associated ||
b203ca39 2278 !ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid))
8d61ffa5 2279 return;
f0706e82
JB		 2280
2281 reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code);
2282
bdcbd8e0
JB		 2283 sdata_info(sdata, "disassociated from %pM (Reason: %u)\n",
2284 mgmt->sa, reason_code);
f0706e82 2285
37ad3888
JB		 2286 ieee80211_set_disassoc(sdata, 0, 0, false, NULL);
2287
6ff57cf8 2288 cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len);
f0706e82
JB		 2289}
2290
c74d084f
CL		 2291static void ieee80211_get_rates(struct ieee80211_supported_band *sband,
2292 u8 *supp_rates, unsigned int supp_rates_len,
2293 u32 *rates, u32 *basic_rates,
2294 bool *have_higher_than_11mbit,
2103dec1
SW		 2295 int *min_rate, int *min_rate_index,
2296 int shift, u32 rate_flags)
c74d084f
CL		 2297{
2298 int i, j;
2299
2300 for (i = 0; i < supp_rates_len; i++) {
2103dec1 2301 int rate = supp_rates[i] & 0x7f;
c74d084f
CL		 2302 bool is_basic = !!(supp_rates[i] & 0x80);
2303
2103dec1 2304 if ((rate * 5 * (1 << shift)) > 110)
c74d084f
CL		 2305 *have_higher_than_11mbit = true;
2306
2307 /*
2308 * BSS_MEMBERSHIP_SELECTOR_HT_PHY is defined in 802.11n-2009
2309 * 7.3.2.2 as a magic value instead of a rate. Hence, skip it.
2310 *
2311 * Note: Even through the membership selector and the basic
2312 * rate flag share the same bit, they are not exactly
2313 * the same.
2314 */
2315 if (!!(supp_rates[i] & 0x80) &&
2316 (supp_rates[i] & 0x7f) == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
2317 continue;
2318
2319 for (j = 0; j < sband->n_bitrates; j++) {
2103dec1
SW		 2320 struct ieee80211_rate *br;
2321 int brate;
2322
2323 br = &sband->bitrates[j];
2324 if ((rate_flags & br->flags) != rate_flags)
2325 continue;
2326
2327 brate = DIV_ROUND_UP(br->bitrate, (1 << shift) * 5);
2328 if (brate == rate) {
c74d084f
CL		 2329 *rates |= BIT(j);
2330 if (is_basic)
2331 *basic_rates |= BIT(j);
2103dec1
SW		 2332 if ((rate * 5) < *min_rate) {
2333 *min_rate = rate * 5;
c74d084f
CL		 2334 *min_rate_index = j;
2335 }
2336 break;
2337 }
2338 }
2339 }
2340}
f0706e82 2341
66e67e41
JB		 2342static void ieee80211_destroy_assoc_data(struct ieee80211_sub_if_data *sdata,
2343 bool assoc)
2344{
2345 struct ieee80211_mgd_assoc_data *assoc_data = sdata->u.mgd.assoc_data;
2346
8d61ffa5 2347 sdata_assert_lock(sdata);
66e67e41 2348
66e67e41
JB		 2349 if (!assoc) {
2350 sta_info_destroy_addr(sdata, assoc_data->bss->bssid);
2351
2352 memset(sdata->u.mgd.bssid, 0, ETH_ALEN);
2353 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID);
028e8da0 2354 sdata->u.mgd.flags = 0;
34a3740d 2355 mutex_lock(&sdata->local->mtx);
55de908a 2356 ieee80211_vif_release_channel(sdata);
34a3740d 2357 mutex_unlock(&sdata->local->mtx);
66e67e41
JB		 2358 }
2359
2360 kfree(assoc_data);
2361 sdata->u.mgd.assoc_data = NULL;
2362}
2363
2364static bool ieee80211_assoc_success(struct ieee80211_sub_if_data *sdata,
2365 struct cfg80211_bss *cbss,
af6b6374 2366 struct ieee80211_mgmt *mgmt, size_t len)
f0706e82 2367{
46900298 2368 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
471b3efd 2369 struct ieee80211_local *local = sdata->local;
8318d78a 2370 struct ieee80211_supported_band *sband;
f0706e82 2371 struct sta_info *sta;
af6b6374 2372 u8 *pos;
af6b6374 2373 u16 capab_info, aid;
f0706e82 2374 struct ieee802_11_elems elems;
bda3933a 2375 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
35d865af
JB		 2376 const struct cfg80211_bss_ies *bss_ies = NULL;
2377 struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data;
ae5eb026 2378 u32 changed = 0;
c74d084f 2379 int err;
35d865af 2380 bool ret;
f0706e82 2381
af6b6374 2382 /* AssocResp and ReassocResp have identical structure */
f0706e82 2383
f0706e82 2384 aid = le16_to_cpu(mgmt->u.assoc_resp.aid);
af6b6374 2385 capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info);
f0706e82 2386
1dd84aa2 2387 if ((aid & (BIT(15) | BIT(14))) != (BIT(15) | BIT(14)))
bdcbd8e0
JB		 2388 sdata_info(sdata, "invalid AID value 0x%x; bits 15:14 not set\n",
2389 aid);
1dd84aa2
JB		 2390 aid &= ~(BIT(15) | BIT(14));
2391
05cb9108
JB		 2392 ifmgd->broken_ap = false;
2393
2394 if (aid == 0 || aid > IEEE80211_MAX_AID) {
bdcbd8e0
JB		 2395 sdata_info(sdata, "invalid AID value %d (out of range), turn off PS\n",
2396 aid);
05cb9108
JB		 2397 aid = 0;
2398 ifmgd->broken_ap = true;
2399 }
2400
af6b6374 2401 pos = mgmt->u.assoc_resp.variable;
b2e506bf 2402 ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), false, &elems);
af6b6374 2403
f0706e82 2404 if (!elems.supp_rates) {
bdcbd8e0 2405 sdata_info(sdata, "no SuppRates element in AssocResp\n");
af6b6374 2406 return false;
f0706e82
JB		 2407 }
2408
46900298 2409 ifmgd->aid = aid;
f0706e82 2410
35d865af
JB		 2411 /*
2412 * Some APs are erroneously not including some information in their
2413 * (re)association response frames. Try to recover by using the data
2414 * from the beacon or probe response. This seems to afflict mobile
2415 * 2G/3G/4G wifi routers, reported models include the "Onda PN51T",
2416 * "Vodafone PocketWiFi 2", "ZTE MF60" and a similar T-Mobile device.
2417 */
2418 if ((assoc_data->wmm && !elems.wmm_param) ||
2419 (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT) &&
2420 (!elems.ht_cap_elem || !elems.ht_operation)) ||
2421 (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) &&
2422 (!elems.vht_cap_elem || !elems.vht_operation))) {
2423 const struct cfg80211_bss_ies *ies;
2424 struct ieee802_11_elems bss_elems;
2425
2426 rcu_read_lock();
2427 ies = rcu_dereference(cbss->ies);
2428 if (ies)
2429 bss_ies = kmemdup(ies, sizeof(*ies) + ies->len,
2430 GFP_ATOMIC);
2431 rcu_read_unlock();
2432 if (!bss_ies)
2433 return false;
2434
2435 ieee802_11_parse_elems(bss_ies->data, bss_ies->len,
2436 false, &bss_elems);
2437 if (assoc_data->wmm &&
2438 !elems.wmm_param && bss_elems.wmm_param) {
2439 elems.wmm_param = bss_elems.wmm_param;
2440 sdata_info(sdata,
2441 "AP bug: WMM param missing from AssocResp\n");
2442 }
2443
2444 /*
2445 * Also check if we requested HT/VHT, otherwise the AP doesn't
2446 * have to include the IEs in the (re)association response.
2447 */
2448 if (!elems.ht_cap_elem && bss_elems.ht_cap_elem &&
2449 !(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) {
2450 elems.ht_cap_elem = bss_elems.ht_cap_elem;
2451 sdata_info(sdata,
2452 "AP bug: HT capability missing from AssocResp\n");
2453 }
2454 if (!elems.ht_operation && bss_elems.ht_operation &&
2455 !(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) {
2456 elems.ht_operation = bss_elems.ht_operation;
2457 sdata_info(sdata,
2458 "AP bug: HT operation missing from AssocResp\n");
2459 }
2460 if (!elems.vht_cap_elem && bss_elems.vht_cap_elem &&
2461 !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) {
2462 elems.vht_cap_elem = bss_elems.vht_cap_elem;
2463 sdata_info(sdata,
2464 "AP bug: VHT capa missing from AssocResp\n");
2465 }
2466 if (!elems.vht_operation && bss_elems.vht_operation &&
2467 !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) {
2468 elems.vht_operation = bss_elems.vht_operation;
2469 sdata_info(sdata,
2470 "AP bug: VHT operation missing from AssocResp\n");
2471 }
2472 }
2473
30eb1dc2
JB		 2474 /*
2475 * We previously checked these in the beacon/probe response, so
2476 * they should be present here. This is just a safety net.
2477 */
2478 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT) &&
2479 (!elems.wmm_param || !elems.ht_cap_elem || !elems.ht_operation)) {
2480 sdata_info(sdata,
35d865af
JB		 2481 "HT AP is missing WMM params or HT capability/operation\n");
2482 ret = false;
2483 goto out;
30eb1dc2
JB		 2484 }
2485
2486 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) &&
2487 (!elems.vht_cap_elem || !elems.vht_operation)) {
2488 sdata_info(sdata,
35d865af
JB		 2489 "VHT AP is missing VHT capability/operation\n");
2490 ret = false;
2491 goto out;
30eb1dc2
JB		 2492 }
2493
2a33bee2
GE		 2494 mutex_lock(&sdata->local->sta_mtx);
2495 /*
2496 * station info was already allocated and inserted before
2497 * the association and should be available to us
2498 */
7852e361 2499 sta = sta_info_get(sdata, cbss->bssid);
2a33bee2
GE		 2500 if (WARN_ON(!sta)) {
2501 mutex_unlock(&sdata->local->sta_mtx);
35d865af
JB		 2502 ret = false;
2503 goto out;
77fdaa12 2504 }
05e5e883 2505
55de908a 2506 sband = local->hw.wiphy->bands[ieee80211_get_sdata_band(sdata)];
f709fc69 2507
30eb1dc2 2508 /* Set up internal HT/VHT capabilities */
a8243b72 2509 if (elems.ht_cap_elem && !(ifmgd->flags & IEEE80211_STA_DISABLE_HT))
ef96a842 2510 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
e1a0c6b3 2511 elems.ht_cap_elem, sta);
64f68e5d 2512
818255ea
MP		 2513 if (elems.vht_cap_elem && !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
2514 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
4a34215e 2515 elems.vht_cap_elem, sta);
818255ea 2516
30eb1dc2
JB		 2517 /*
2518 * Some APs, e.g. Netgear WNDR3700, report invalid HT operation data
2519 * in their association response, so ignore that data for our own
2520 * configuration. If it changed since the last beacon, we'll get the
2521 * next beacon and update then.
2522 */
1128958d 2523
bee7f586
JB		 2524 /*
2525 * If an operating mode notification IE is present, override the
2526 * NSS calculation (that would be done in rate_control_rate_init())
2527 * and use the # of streams from that element.
2528 */
2529 if (elems.opmode_notif &&
2530 !(*elems.opmode_notif & IEEE80211_OPMODE_NOTIF_RX_NSS_TYPE_BF)) {
2531 u8 nss;
2532
2533 nss = *elems.opmode_notif & IEEE80211_OPMODE_NOTIF_RX_NSS_MASK;
2534 nss >>= IEEE80211_OPMODE_NOTIF_RX_NSS_SHIFT;
2535 nss += 1;
2536 sta->sta.rx_nss = nss;
2537 }
2538
4b7679a5 2539 rate_control_rate_init(sta);
f0706e82 2540
46900298 2541 if (ifmgd->flags & IEEE80211_STA_MFP_ENABLED)
c2c98fde 2542 set_sta_flag(sta, WLAN_STA_MFP);
5394af4d 2543
ddf4ac53 2544 if (elems.wmm_param)
c2c98fde 2545 set_sta_flag(sta, WLAN_STA_WME);
ddf4ac53 2546
3e4d40fa 2547 err = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
c8987876
JB		 2548 if (!err && !(ifmgd->flags & IEEE80211_STA_CONTROL_PORT))
2549 err = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
2550 if (err) {
bdcbd8e0
JB		 2551 sdata_info(sdata,
2552 "failed to move station %pM to desired state\n",
2553 sta->sta.addr);
c8987876
JB		 2554 WARN_ON(__sta_info_destroy(sta));
2555 mutex_unlock(&sdata->local->sta_mtx);
35d865af
JB		 2556 ret = false;
2557 goto out;
c8987876
JB		 2558 }
2559
7852e361 2560 mutex_unlock(&sdata->local->sta_mtx);
ddf4ac53 2561
f2176d72
JO		 2562 /*
2563 * Always handle WMM once after association regardless
2564 * of the first value the AP uses. Setting -1 here has
2565 * that effect because the AP values is an unsigned
2566 * 4-bit value.
2567 */
2568 ifmgd->wmm_last_param_set = -1;
2569
095d81ce 2570 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_WMM) && elems.wmm_param)
4ced3f74 2571 ieee80211_sta_wmm_params(local, sdata, elems.wmm_param,
60f8b39c 2572 elems.wmm_param_len);
aa837e1d 2573 else
3abead59
JB		 2574 ieee80211_set_wmm_default(sdata, false);
2575 changed |= BSS_CHANGED_QOS;
f0706e82 2576
60f8b39c
JB		 2577 /* set AID and assoc capability,
2578 * ieee80211_set_associated() will tell the driver */
2579 bss_conf->aid = aid;
2580 bss_conf->assoc_capability = capab_info;
0c1ad2ca 2581 ieee80211_set_associated(sdata, cbss, changed);
f0706e82 2582
d524215f
FF		 2583 /*
2584 * If we're using 4-addr mode, let the AP know that we're
2585 * doing so, so that it can create the STA VLAN on its side
2586 */
2587 if (ifmgd->use_4addr)
2588 ieee80211_send_4addr_nullfunc(local, sdata);
2589
15b7b062 2590 /*
b291ba11
JB		 2591 * Start timer to probe the connection to the AP now.
2592 * Also start the timer that will detect beacon loss.
15b7b062 2593 */
b291ba11 2594 ieee80211_sta_rx_notify(sdata, (struct ieee80211_hdr *)mgmt);
d3a910a8 2595 ieee80211_sta_reset_beacon_monitor(sdata);
15b7b062 2596
35d865af
JB		 2597 ret = true;
2598 out:
2599 kfree(bss_ies);
2600 return ret;
f0706e82
JB		 2601}
2602
8d61ffa5
JB		 2603static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata,
2604 struct ieee80211_mgmt *mgmt,
2605 size_t len)
66e67e41
JB		 2606{
2607 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2608 struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data;
2609 u16 capab_info, status_code, aid;
2610 struct ieee802_11_elems elems;
2611 u8 *pos;
2612 bool reassoc;
8d61ffa5 2613 struct cfg80211_bss *bss;
66e67e41 2614
8d61ffa5 2615 sdata_assert_lock(sdata);
66e67e41
JB		 2616
2617 if (!assoc_data)
8d61ffa5 2618 return;
b203ca39 2619 if (!ether_addr_equal(assoc_data->bss->bssid, mgmt->bssid))
8d61ffa5 2620 return;
66e67e41
JB		 2621
2622 /*
2623 * AssocResp and ReassocResp have identical structure, so process both
2624 * of them in this function.
2625 */
2626
2627 if (len < 24 + 6)
8d61ffa5 2628 return;
66e67e41
JB		 2629
2630 reassoc = ieee80211_is_reassoc_req(mgmt->frame_control);
2631 capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info);
2632 status_code = le16_to_cpu(mgmt->u.assoc_resp.status_code);
2633 aid = le16_to_cpu(mgmt->u.assoc_resp.aid);
2634
bdcbd8e0
JB		 2635 sdata_info(sdata,
2636 "RX %sssocResp from %pM (capab=0x%x status=%d aid=%d)\n",
2637 reassoc ? "Rea" : "A", mgmt->sa,
2638 capab_info, status_code, (u16)(aid & ~(BIT(15) | BIT(14))));
66e67e41
JB		 2639
2640 pos = mgmt->u.assoc_resp.variable;
b2e506bf 2641 ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), false, &elems);
66e67e41
JB		 2642
2643 if (status_code == WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY &&
79ba1d89
JB		 2644 elems.timeout_int &&
2645 elems.timeout_int->type == WLAN_TIMEOUT_ASSOC_COMEBACK) {
66e67e41 2646 u32 tu, ms;
79ba1d89 2647 tu = le32_to_cpu(elems.timeout_int->value);
66e67e41 2648 ms = tu * 1024 / 1000;
bdcbd8e0
JB		 2649 sdata_info(sdata,
2650 "%pM rejected association temporarily; comeback duration %u TU (%u ms)\n",
2651 mgmt->sa, tu, ms);
66e67e41 2652 assoc_data->timeout = jiffies + msecs_to_jiffies(ms);
89afe614 2653 assoc_data->timeout_started = true;
66e67e41 2654 if (ms > IEEE80211_ASSOC_TIMEOUT)
8d61ffa5
JB		 2655 run_again(sdata, assoc_data->timeout);
2656 return;
66e67e41
JB		 2657 }
2658
8d61ffa5 2659 bss = assoc_data->bss;
66e67e41
JB		 2660
2661 if (status_code != WLAN_STATUS_SUCCESS) {
bdcbd8e0
JB		 2662 sdata_info(sdata, "%pM denied association (code=%d)\n",
2663 mgmt->sa, status_code);
66e67e41
JB		 2664 ieee80211_destroy_assoc_data(sdata, false);
2665 } else {
8d61ffa5 2666 if (!ieee80211_assoc_success(sdata, bss, mgmt, len)) {
66e67e41 2667 /* oops -- internal error -- send timeout for now */
10a9109f 2668 ieee80211_destroy_assoc_data(sdata, false);
959867fa 2669 cfg80211_assoc_timeout(sdata->dev, bss);
8d61ffa5 2670 return;
66e67e41 2671 }
635d999f 2672 sdata_info(sdata, "associated\n");
79ebfb85
JB		 2673
2674 /*
2675 * destroy assoc_data afterwards, as otherwise an idle
2676 * recalc after assoc_data is NULL but before associated
2677 * is set can cause the interface to go idle
2678 */
2679 ieee80211_destroy_assoc_data(sdata, true);
66e67e41
JB		 2680 }
2681
6ff57cf8 2682 cfg80211_rx_assoc_resp(sdata->dev, bss, (u8 *)mgmt, len);
66e67e41 2683}
8e3c1b77 2684
98c8fccf 2685static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
8e3c1b77 2686 struct ieee80211_mgmt *mgmt, size_t len,
98c8fccf 2687 struct ieee80211_rx_status *rx_status,
d45c4172 2688 struct ieee802_11_elems *elems)
98c8fccf
JB		 2689{
2690 struct ieee80211_local *local = sdata->local;
2691 int freq;
c2b13452 2692 struct ieee80211_bss *bss;
98c8fccf 2693 struct ieee80211_channel *channel;
56007a02 2694
8d61ffa5 2695 sdata_assert_lock(sdata);
b4f286a1 2696
1cd8e88e 2697 if (elems->ds_params)
59eb21a6
BR		 2698 freq = ieee80211_channel_to_frequency(elems->ds_params[0],
2699 rx_status->band);
98c8fccf
JB		 2700 else
2701 freq = rx_status->freq;
2702
2703 channel = ieee80211_get_channel(local->hw.wiphy, freq);
2704
2705 if (!channel || channel->flags & IEEE80211_CHAN_DISABLED)
2706 return;
2707
98c8fccf 2708 bss = ieee80211_bss_info_update(local, rx_status, mgmt, len, elems,
d45c4172 2709 channel);
817cee76 2710 if (bss) {
77fdaa12 2711 ieee80211_rx_bss_put(local, bss);
817cee76
AB		 2712 sdata->vif.bss_conf.beacon_rate = bss->beacon_rate;
2713 }
f0706e82
JB		 2714}
2715
2716
f698d856 2717static void ieee80211_rx_mgmt_probe_resp(struct ieee80211_sub_if_data *sdata,
af6b6374 2718 struct sk_buff *skb)
f0706e82 2719{
af6b6374 2720 struct ieee80211_mgmt *mgmt = (void *)skb->data;
15b7b062 2721 struct ieee80211_if_managed *ifmgd;
af6b6374
JB		 2722 struct ieee80211_rx_status *rx_status = (void *) skb->cb;
2723 size_t baselen, len = skb->len;
ae6a44e3
EK		 2724 struct ieee802_11_elems elems;
2725
15b7b062
KV		 2726 ifmgd = &sdata->u.mgd;
2727
8d61ffa5 2728 sdata_assert_lock(sdata);
77fdaa12 2729
b203ca39 2730 if (!ether_addr_equal(mgmt->da, sdata->vif.addr))
8e7cdbb6
TW		 2731 return; /* ignore ProbeResp to foreign address */
2732
ae6a44e3
EK		 2733 baselen = (u8 *) mgmt->u.probe_resp.variable - (u8 *) mgmt;
2734 if (baselen > len)
2735 return;
2736
2737 ieee802_11_parse_elems(mgmt->u.probe_resp.variable, len - baselen,
b2e506bf 2738 false, &elems);
ae6a44e3 2739
d45c4172 2740 ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems);
9859b81e 2741
77fdaa12 2742 if (ifmgd->associated &&
b203ca39 2743 ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid))
4e5ff376 2744 ieee80211_reset_ap_probe(sdata);
66e67e41
JB		 2745
2746 if (ifmgd->auth_data && !ifmgd->auth_data->bss->proberesp_ies &&
b203ca39 2747 ether_addr_equal(mgmt->bssid, ifmgd->auth_data->bss->bssid)) {
66e67e41 2748 /* got probe response, continue with auth */
bdcbd8e0 2749 sdata_info(sdata, "direct probe responded\n");
66e67e41
JB		 2750 ifmgd->auth_data->tries = 0;
2751 ifmgd->auth_data->timeout = jiffies;
89afe614 2752 ifmgd->auth_data->timeout_started = true;
8d61ffa5 2753 run_again(sdata, ifmgd->auth_data->timeout);
66e67e41 2754 }
f0706e82
JB		 2755}
2756
d91f36db
JB		 2757/*
2758 * This is the canonical list of information elements we care about,
2759 * the filter code also gives us all changes to the Microsoft OUI
2760 * (00:50:F2) vendor IE which is used for WMM which we need to track.
2761 *
2762 * We implement beacon filtering in software since that means we can
2763 * avoid processing the frame here and in cfg80211, and userspace
2764 * will not be able to tell whether the hardware supports it or not.
2765 *
2766 * XXX: This list needs to be dynamic -- userspace needs to be able to
2767 * add items it requires. It also needs to be able to tell us to
2768 * look out for other vendor IEs.
2769 */
2770static const u64 care_about_ies =
1d4df3a5
JB		 2771 (1ULL << WLAN_EID_COUNTRY) |
2772 (1ULL << WLAN_EID_ERP_INFO) |
2773 (1ULL << WLAN_EID_CHANNEL_SWITCH) |
2774 (1ULL << WLAN_EID_PWR_CONSTRAINT) |
2775 (1ULL << WLAN_EID_HT_CAPABILITY) |
074d46d1 2776 (1ULL << WLAN_EID_HT_OPERATION);
d91f36db 2777
8d61ffa5
JB		 2778static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
2779 struct ieee80211_mgmt *mgmt, size_t len,
2780 struct ieee80211_rx_status *rx_status)
f0706e82 2781{
d91f36db 2782 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
17e4ec14 2783 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
f0706e82
JB		 2784 size_t baselen;
2785 struct ieee802_11_elems elems;
f698d856 2786 struct ieee80211_local *local = sdata->local;
55de908a
JB		 2787 struct ieee80211_chanctx_conf *chanctx_conf;
2788 struct ieee80211_channel *chan;
bee7f586 2789 struct sta_info *sta;
471b3efd 2790 u32 changed = 0;
f87ad637 2791 bool erp_valid;
7a5158ef 2792 u8 erp_value = 0;
d91f36db 2793 u32 ncrc;
77fdaa12 2794 u8 *bssid;
8d61ffa5 2795 u8 deauth_buf[IEEE80211_DEAUTH_FRAME_LEN];
77fdaa12 2796
8d61ffa5 2797 sdata_assert_lock(sdata);
f0706e82 2798
ae6a44e3
EK		 2799 /* Process beacon from the current BSS */
2800 baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt;
2801 if (baselen > len)
8d61ffa5 2802 return;
ae6a44e3 2803
55de908a
JB		 2804 rcu_read_lock();
2805 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
2806 if (!chanctx_conf) {
2807 rcu_read_unlock();
8d61ffa5 2808 return;
55de908a
JB		 2809 }
2810
4bf88530 2811 if (rx_status->freq != chanctx_conf->def.chan->center_freq) {
55de908a 2812 rcu_read_unlock();
8d61ffa5 2813 return;
55de908a 2814 }
4bf88530 2815 chan = chanctx_conf->def.chan;
55de908a 2816 rcu_read_unlock();
f0706e82 2817
c65dd147 2818 if (ifmgd->assoc_data && ifmgd->assoc_data->need_beacon &&
b203ca39 2819 ether_addr_equal(mgmt->bssid, ifmgd->assoc_data->bss->bssid)) {
66e67e41 2820 ieee802_11_parse_elems(mgmt->u.beacon.variable,
b2e506bf 2821 len - baselen, false, &elems);
77fdaa12 2822
d45c4172 2823 ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems);
482a9c74
AB		 2824 if (elems.tim && !elems.parse_error) {
2825 const struct ieee80211_tim_ie *tim_ie = elems.tim;
2826 ifmgd->dtim_period = tim_ie->dtim_period;
2827 }
989c6505 2828 ifmgd->have_beacon = true;
c65dd147 2829 ifmgd->assoc_data->need_beacon = false;
ef429dad
JB		 2830 if (local->hw.flags & IEEE80211_HW_TIMING_BEACON_ONLY) {
2831 sdata->vif.bss_conf.sync_tsf =
2832 le64_to_cpu(mgmt->u.beacon.timestamp);
2833 sdata->vif.bss_conf.sync_device_ts =
2834 rx_status->device_timestamp;
2835 if (elems.tim)
2836 sdata->vif.bss_conf.sync_dtim_count =
2837 elems.tim->dtim_count;
2838 else
2839 sdata->vif.bss_conf.sync_dtim_count = 0;
2840 }
66e67e41
JB		 2841 /* continue assoc process */
2842 ifmgd->assoc_data->timeout = jiffies;
89afe614 2843 ifmgd->assoc_data->timeout_started = true;
8d61ffa5
JB		 2844 run_again(sdata, ifmgd->assoc_data->timeout);
2845 return;
66e67e41 2846 }
77fdaa12 2847
66e67e41 2848 if (!ifmgd->associated ||
b203ca39 2849 !ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid))
8d61ffa5 2850 return;
66e67e41 2851 bssid = ifmgd->associated->bssid;
f0706e82 2852
17e4ec14
JM		 2853 /* Track average RSSI from the Beacon frames of the current AP */
2854 ifmgd->last_beacon_signal = rx_status->signal;
2855 if (ifmgd->flags & IEEE80211_STA_RESET_SIGNAL_AVE) {
2856 ifmgd->flags &= ~IEEE80211_STA_RESET_SIGNAL_AVE;
3ba06c6f 2857 ifmgd->ave_beacon_signal = rx_status->signal * 16;
17e4ec14 2858 ifmgd->last_cqm_event_signal = 0;
391a200a 2859 ifmgd->count_beacon_signal = 1;
615f7b9b 2860 ifmgd->last_ave_beacon_signal = 0;
17e4ec14
JM		 2861 } else {
2862 ifmgd->ave_beacon_signal =
2863 (IEEE80211_SIGNAL_AVE_WEIGHT * rx_status->signal * 16 +
2864 (16 - IEEE80211_SIGNAL_AVE_WEIGHT) *
2865 ifmgd->ave_beacon_signal) / 16;
391a200a 2866 ifmgd->count_beacon_signal++;
17e4ec14 2867 }
615f7b9b
MV		 2868
2869 if (ifmgd->rssi_min_thold != ifmgd->rssi_max_thold &&
2870 ifmgd->count_beacon_signal >= IEEE80211_SIGNAL_AVE_MIN_COUNT) {
2871 int sig = ifmgd->ave_beacon_signal;
2872 int last_sig = ifmgd->last_ave_beacon_signal;
2873
2874 /*
2875 * if signal crosses either of the boundaries, invoke callback
2876 * with appropriate parameters
2877 */
2878 if (sig > ifmgd->rssi_max_thold &&
2879 (last_sig <= ifmgd->rssi_min_thold || last_sig == 0)) {
2880 ifmgd->last_ave_beacon_signal = sig;
887da917 2881 drv_rssi_callback(local, sdata, RSSI_EVENT_HIGH);
615f7b9b
MV		 2882 } else if (sig < ifmgd->rssi_min_thold &&
2883 (last_sig >= ifmgd->rssi_max_thold ||
2884 last_sig == 0)) {
2885 ifmgd->last_ave_beacon_signal = sig;
887da917 2886 drv_rssi_callback(local, sdata, RSSI_EVENT_LOW);
615f7b9b
MV		 2887 }
2888 }
2889
17e4ec14 2890 if (bss_conf->cqm_rssi_thold &&
391a200a 2891 ifmgd->count_beacon_signal >= IEEE80211_SIGNAL_AVE_MIN_COUNT &&
ea086359 2892 !(sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)) {
17e4ec14
JM		 2893 int sig = ifmgd->ave_beacon_signal / 16;
2894 int last_event = ifmgd->last_cqm_event_signal;
2895 int thold = bss_conf->cqm_rssi_thold;
2896 int hyst = bss_conf->cqm_rssi_hyst;
2897 if (sig < thold &&
2898 (last_event == 0 || sig < last_event - hyst)) {
2899 ifmgd->last_cqm_event_signal = sig;
2900 ieee80211_cqm_rssi_notify(
2901 &sdata->vif,
2902 NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW,
2903 GFP_KERNEL);
2904 } else if (sig > thold &&
2905 (last_event == 0 || sig > last_event + hyst)) {
2906 ifmgd->last_cqm_event_signal = sig;
2907 ieee80211_cqm_rssi_notify(
2908 &sdata->vif,
2909 NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH,
2910 GFP_KERNEL);
2911 }
2912 }
2913
392b9ffb 2914 if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL) {
bdcbd8e0 2915 mlme_dbg_ratelimited(sdata,
112c31f0 2916 "cancelling AP probe due to a received beacon\n");
392b9ffb 2917 ieee80211_reset_ap_probe(sdata);
92778180
JM		 2918 }
2919
b291ba11
JB		 2920 /*
2921 * Push the beacon loss detection into the future since
2922 * we are processing a beacon from the AP just now.
2923 */
d3a910a8 2924 ieee80211_sta_reset_beacon_monitor(sdata);
b291ba11 2925
d91f36db
JB		 2926 ncrc = crc32_be(0, (void *)&mgmt->u.beacon.beacon_int, 4);
2927 ncrc = ieee802_11_parse_elems_crc(mgmt->u.beacon.variable,
b2e506bf 2928 len - baselen, false, &elems,
d91f36db
JB		 2929 care_about_ies, ncrc);
2930
25c9c875 2931 if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) {
f87ad637
RR		 2932 bool directed_tim = ieee80211_check_tim(elems.tim,
2933 elems.tim_len,
2934 ifmgd->aid);
1fb3606b 2935 if (directed_tim) {
572e0012 2936 if (local->hw.conf.dynamic_ps_timeout > 0) {
70b12f26
RW		 2937 if (local->hw.conf.flags & IEEE80211_CONF_PS) {
2938 local->hw.conf.flags &= ~IEEE80211_CONF_PS;
2939 ieee80211_hw_config(local,
2940 IEEE80211_CONF_CHANGE_PS);
2941 }
572e0012 2942 ieee80211_send_nullfunc(local, sdata, 0);
6f0756a3 2943 } else if (!local->pspolling && sdata->u.mgd.powersave) {
572e0012
KV		 2944 local->pspolling = true;
2945
2946 /*
2947 * Here is assumed that the driver will be
2948 * able to send ps-poll frame and receive a
2949 * response even though power save mode is
2950 * enabled, but some drivers might require
2951 * to disable power save here. This needs
2952 * to be investigated.
2953 */
2954 ieee80211_send_pspoll(local, sdata);
2955 }
a97b77b9
VN		 2956 }
2957 }
7a5158ef 2958
488dd7b5 2959 if (sdata->vif.p2p) {
67baf663 2960 struct ieee80211_p2p_noa_attr noa = {};
488dd7b5
JB		 2961 int ret;
2962
2963 ret = cfg80211_get_p2p_attr(mgmt->u.beacon.variable,
2964 len - baselen,
2965 IEEE80211_P2P_ATTR_ABSENCE_NOTICE,
934457ee 2966 (u8 *) &noa, sizeof(noa));
67baf663
JD		 2967 if (ret >= 2) {
2968 if (sdata->u.mgd.p2p_noa_index != noa.index) {
2969 /* valid noa_attr and index changed */
2970 sdata->u.mgd.p2p_noa_index = noa.index;
2971 memcpy(&bss_conf->p2p_noa_attr, &noa, sizeof(noa));
2972 changed |= BSS_CHANGED_P2P_PS;
2973 /*
2974 * make sure we update all information, the CRC
2975 * mechanism doesn't look at P2P attributes.
2976 */
2977 ifmgd->beacon_crc_valid = false;
2978 }
2979 } else if (sdata->u.mgd.p2p_noa_index != -1) {
2980 /* noa_attr not found and we had valid noa_attr before */
2981 sdata->u.mgd.p2p_noa_index = -1;
2982 memset(&bss_conf->p2p_noa_attr, 0, sizeof(bss_conf->p2p_noa_attr));
488dd7b5 2983 changed |= BSS_CHANGED_P2P_PS;
488dd7b5
JB		 2984 ifmgd->beacon_crc_valid = false;
2985 }
2986 }
2987
d8ec4433 2988 if (ncrc == ifmgd->beacon_crc && ifmgd->beacon_crc_valid)
8d61ffa5 2989 return;
30196673 2990 ifmgd->beacon_crc = ncrc;
d8ec4433 2991 ifmgd->beacon_crc_valid = true;
30196673 2992
d45c4172 2993 ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems);
7d25745d 2994
d70b7616
JB		 2995 ieee80211_sta_process_chanswitch(sdata, rx_status->mactime,
2996 &elems, true);
2997
095d81ce
JB		 2998 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_WMM) &&
2999 ieee80211_sta_wmm_params(local, sdata, elems.wmm_param,
7d25745d
JB		 3000 elems.wmm_param_len))
3001 changed |= BSS_CHANGED_QOS;
3002
c65dd147
EG		 3003 /*
3004 * If we haven't had a beacon before, tell the driver about the
ef429dad 3005 * DTIM period (and beacon timing if desired) now.
c65dd147 3006 */
989c6505 3007 if (!ifmgd->have_beacon) {
c65dd147
EG		 3008 /* a few bogus AP send dtim_period = 0 or no TIM IE */
3009 if (elems.tim)
3010 bss_conf->dtim_period = elems.tim->dtim_period ?: 1;
3011 else
3012 bss_conf->dtim_period = 1;
ef429dad
JB		 3013
3014 if (local->hw.flags & IEEE80211_HW_TIMING_BEACON_ONLY) {
3015 sdata->vif.bss_conf.sync_tsf =
3016 le64_to_cpu(mgmt->u.beacon.timestamp);
3017 sdata->vif.bss_conf.sync_device_ts =
3018 rx_status->device_timestamp;
3019 if (elems.tim)
3020 sdata->vif.bss_conf.sync_dtim_count =
3021 elems.tim->dtim_count;
3022 else
3023 sdata->vif.bss_conf.sync_dtim_count = 0;
3024 }
3025
989c6505
AB		 3026 changed |= BSS_CHANGED_BEACON_INFO;
3027 ifmgd->have_beacon = true;
482a9c74
AB		 3028
3029 mutex_lock(&local->iflist_mtx);
3030 ieee80211_recalc_ps(local, -1);
3031 mutex_unlock(&local->iflist_mtx);
3032
ce857888 3033 ieee80211_recalc_ps_vif(sdata);
c65dd147
EG		 3034 }
3035
1946bed9 3036 if (elems.erp_info) {
7a5158ef
JB		 3037 erp_valid = true;
3038 erp_value = elems.erp_info[0];
3039 } else {
3040 erp_valid = false;
50c4afb9 3041 }
7a5158ef
JB		 3042 changed |= ieee80211_handle_bss_capability(sdata,
3043 le16_to_cpu(mgmt->u.beacon.capab_info),
3044 erp_valid, erp_value);
f0706e82 3045
1128958d 3046 mutex_lock(&local->sta_mtx);
bee7f586
JB		 3047 sta = sta_info_get(sdata, bssid);
3048
30eb1dc2
JB		 3049 if (ieee80211_config_bw(sdata, sta, elems.ht_operation,
3050 elems.vht_operation, bssid, &changed)) {
3051 mutex_unlock(&local->sta_mtx);
3052 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
3053 WLAN_REASON_DEAUTH_LEAVING,
3054 true, deauth_buf);
6ff57cf8
JB		 3055 cfg80211_tx_mlme_mgmt(sdata->dev, deauth_buf,
3056 sizeof(deauth_buf));
8d61ffa5 3057 return;
30eb1dc2 3058 }
bee7f586
JB		 3059
3060 if (sta && elems.opmode_notif)
3061 ieee80211_vht_handle_opmode(sdata, sta, *elems.opmode_notif,
3062 rx_status->band, true);
1128958d 3063 mutex_unlock(&local->sta_mtx);
d3c990fb 3064
04b7b2ff
JB		 3065 if (elems.country_elem && elems.pwr_constr_elem &&
3066 mgmt->u.probe_resp.capab_info &
3067 cpu_to_le16(WLAN_CAPABILITY_SPECTRUM_MGMT))
1ea6f9c0
JB		 3068 changed |= ieee80211_handle_pwr_constr(sdata, chan,
3069 elems.country_elem,
3070 elems.country_elem_len,
3071 elems.pwr_constr_elem);
3f2355cb 3072
471b3efd 3073 ieee80211_bss_info_change_notify(sdata, changed);
f0706e82
JB		 3074}
3075
1fa57d01
JB		 3076void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
3077 struct sk_buff *skb)
f0706e82
JB		 3078{
3079 struct ieee80211_rx_status *rx_status;
f0706e82
JB		 3080 struct ieee80211_mgmt *mgmt;
3081 u16 fc;
1b3a2e49
JB		 3082 struct ieee802_11_elems elems;
3083 int ies_len;
f0706e82 3084
f0706e82
JB		 3085 rx_status = (struct ieee80211_rx_status *) skb->cb;
3086 mgmt = (struct ieee80211_mgmt *) skb->data;
3087 fc = le16_to_cpu(mgmt->frame_control);
3088
8d61ffa5 3089 sdata_lock(sdata);
77fdaa12 3090
66e67e41
JB		 3091 switch (fc & IEEE80211_FCTL_STYPE) {
3092 case IEEE80211_STYPE_BEACON:
8d61ffa5 3093 ieee80211_rx_mgmt_beacon(sdata, mgmt, skb->len, rx_status);
66e67e41
JB		 3094 break;
3095 case IEEE80211_STYPE_PROBE_RESP:
3096 ieee80211_rx_mgmt_probe_resp(sdata, skb);
3097 break;
3098 case IEEE80211_STYPE_AUTH:
8d61ffa5 3099 ieee80211_rx_mgmt_auth(sdata, mgmt, skb->len);
66e67e41
JB		 3100 break;
3101 case IEEE80211_STYPE_DEAUTH:
8d61ffa5 3102 ieee80211_rx_mgmt_deauth(sdata, mgmt, skb->len);
66e67e41
JB		 3103 break;
3104 case IEEE80211_STYPE_DISASSOC:
8d61ffa5 3105 ieee80211_rx_mgmt_disassoc(sdata, mgmt, skb->len);
66e67e41
JB		 3106 break;
3107 case IEEE80211_STYPE_ASSOC_RESP:
3108 case IEEE80211_STYPE_REASSOC_RESP:
8d61ffa5 3109 ieee80211_rx_mgmt_assoc_resp(sdata, mgmt, skb->len);
66e67e41
JB		 3110 break;
3111 case IEEE80211_STYPE_ACTION:
37799e52 3112 if (mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT) {
1b3a2e49
JB		 3113 ies_len = skb->len -
3114 offsetof(struct ieee80211_mgmt,
3115 u.action.u.chan_switch.variable);
37799e52
JB		 3116
3117 if (ies_len < 0)
3118 break;
3119
3120 ieee802_11_parse_elems(
3121 mgmt->u.action.u.chan_switch.variable,
b2e506bf 3122 ies_len, true, &elems);
37799e52
JB		 3123
3124 if (elems.parse_error)
3125 break;
3126
1b3a2e49
JB		 3127 ieee80211_sta_process_chanswitch(sdata,
3128 rx_status->mactime,
04a161f4 3129 &elems, false);
1b3a2e49
JB		 3130 } else if (mgmt->u.action.category == WLAN_CATEGORY_PUBLIC) {
3131 ies_len = skb->len -
3132 offsetof(struct ieee80211_mgmt,
3133 u.action.u.ext_chan_switch.variable);
3134
3135 if (ies_len < 0)
3136 break;
3137
3138 ieee802_11_parse_elems(
3139 mgmt->u.action.u.ext_chan_switch.variable,
b2e506bf 3140 ies_len, true, &elems);
1b3a2e49
JB		 3141
3142 if (elems.parse_error)
3143 break;
3144
3145 /* for the handling code pretend this was also an IE */
3146 elems.ext_chansw_ie =
3147 &mgmt->u.action.u.ext_chan_switch.data;
3148
66e67e41 3149 ieee80211_sta_process_chanswitch(sdata,
37799e52 3150 rx_status->mactime,
04a161f4 3151 &elems, false);
77fdaa12 3152 }
37799e52 3153 break;
77fdaa12 3154 }
8d61ffa5 3155 sdata_unlock(sdata);
f0706e82
JB		 3156}
3157
9c6bd790 3158static void ieee80211_sta_timer(unsigned long data)
f0706e82 3159{
60f8b39c
JB		 3160 struct ieee80211_sub_if_data *sdata =
3161 (struct ieee80211_sub_if_data *) data;
5bb644a0 3162
9b7d72c1 3163 ieee80211_queue_work(&sdata->local->hw, &sdata->work);
f0706e82
JB		 3164}
3165
04ac3c0e 3166static void ieee80211_sta_connection_lost(struct ieee80211_sub_if_data *sdata,
6b684db1 3167 u8 *bssid, u8 reason, bool tx)
04ac3c0e 3168{
6ae16775 3169 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
04ac3c0e 3170
37ad3888 3171 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, reason,
6b684db1 3172 tx, frame_buf);
37ad3888 3173
6ff57cf8
JB		 3174 cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf,
3175 IEEE80211_DEAUTH_FRAME_LEN);
04ac3c0e
FF		 3176}
3177
66e67e41
JB		 3178static int ieee80211_probe_auth(struct ieee80211_sub_if_data *sdata)
3179{
3180 struct ieee80211_local *local = sdata->local;
3181 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3182 struct ieee80211_mgd_auth_data *auth_data = ifmgd->auth_data;
1672c0e3 3183 u32 tx_flags = 0;
66e67e41 3184
8d61ffa5 3185 sdata_assert_lock(sdata);
66e67e41
JB		 3186
3187 if (WARN_ON_ONCE(!auth_data))
3188 return -EINVAL;
3189
66e67e41
JB		 3190 auth_data->tries++;
3191
3192 if (auth_data->tries > IEEE80211_AUTH_MAX_TRIES) {
bdcbd8e0
JB		 3193 sdata_info(sdata, "authentication with %pM timed out\n",
3194 auth_data->bss->bssid);
66e67e41
JB		 3195
3196 /*
3197 * Most likely AP is not in the range so remove the
3198 * bss struct for that AP.
3199 */
3200 cfg80211_unlink_bss(local->hw.wiphy, auth_data->bss);
3201
3202 return -ETIMEDOUT;
3203 }
3204
a1845fc7
JB		 3205 drv_mgd_prepare_tx(local, sdata);
3206
66e67e41 3207 if (auth_data->bss->proberesp_ies) {
6b8ece3a
JM		 3208 u16 trans = 1;
3209 u16 status = 0;
3210
bdcbd8e0
JB		 3211 sdata_info(sdata, "send auth to %pM (try %d/%d)\n",
3212 auth_data->bss->bssid, auth_data->tries,
3213 IEEE80211_AUTH_MAX_TRIES);
66e67e41
JB		 3214
3215 auth_data->expected_transaction = 2;
6b8ece3a
JM		 3216
3217 if (auth_data->algorithm == WLAN_AUTH_SAE) {
3218 trans = auth_data->sae_trans;
3219 status = auth_data->sae_status;
3220 auth_data->expected_transaction = trans;
3221 }
3222
6211dd12
SG		 3223 if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)
3224 tx_flags = IEEE80211_TX_CTL_REQ_TX_STATUS |
3225 IEEE80211_TX_INTFL_MLME_CONN_TX;
3226
6b8ece3a
JM		 3227 ieee80211_send_auth(sdata, trans, auth_data->algorithm, status,
3228 auth_data->data, auth_data->data_len,
66e67e41 3229 auth_data->bss->bssid,
1672c0e3
JB		 3230 auth_data->bss->bssid, NULL, 0, 0,
3231 tx_flags);
66e67e41
JB		 3232 } else {
3233 const u8 *ssidie;
3234
bdcbd8e0
JB		 3235 sdata_info(sdata, "direct probe to %pM (try %d/%i)\n",
3236 auth_data->bss->bssid, auth_data->tries,
3237 IEEE80211_AUTH_MAX_TRIES);
66e67e41 3238
9caf0364 3239 rcu_read_lock();
66e67e41 3240 ssidie = ieee80211_bss_get_ie(auth_data->bss, WLAN_EID_SSID);
9caf0364
JB		 3241 if (!ssidie) {
3242 rcu_read_unlock();
66e67e41 3243 return -EINVAL;
9caf0364 3244 }
66e67e41
JB		 3245 /*
3246 * Direct probe is sent to broadcast address as some APs
3247 * will not answer to direct packet in unassociated state.
3248 */
3249 ieee80211_send_probe_req(sdata, NULL, ssidie + 2, ssidie[1],
6211dd12 3250 NULL, 0, (u32) -1, true, 0,
55de908a 3251 auth_data->bss->channel, false);
9caf0364 3252 rcu_read_unlock();
66e67e41
JB		 3253 }
3254
6211dd12 3255 if (tx_flags == 0) {
1672c0e3 3256 auth_data->timeout = jiffies + IEEE80211_AUTH_TIMEOUT;
cb236d2d 3257 auth_data->timeout_started = true;
8d61ffa5 3258 run_again(sdata, auth_data->timeout);
89afe614 3259 } else {
cb236d2d
JB		 3260 auth_data->timeout =
3261 round_jiffies_up(jiffies + IEEE80211_AUTH_TIMEOUT_LONG);
3262 auth_data->timeout_started = true;
3263 run_again(sdata, auth_data->timeout);
1672c0e3 3264 }
66e67e41
JB		 3265
3266 return 0;
3267}
3268
3269static int ieee80211_do_assoc(struct ieee80211_sub_if_data *sdata)
3270{
3271 struct ieee80211_mgd_assoc_data *assoc_data = sdata->u.mgd.assoc_data;
3272 struct ieee80211_local *local = sdata->local;
3273
8d61ffa5 3274 sdata_assert_lock(sdata);
66e67e41 3275
66e67e41
JB		 3276 assoc_data->tries++;
3277 if (assoc_data->tries > IEEE80211_ASSOC_MAX_TRIES) {
bdcbd8e0
JB		 3278 sdata_info(sdata, "association with %pM timed out\n",
3279 assoc_data->bss->bssid);
66e67e41
JB		 3280
3281 /*
3282 * Most likely AP is not in the range so remove the
3283 * bss struct for that AP.
3284 */
3285 cfg80211_unlink_bss(local->hw.wiphy, assoc_data->bss);
3286
3287 return -ETIMEDOUT;
3288 }
3289
bdcbd8e0
JB		 3290 sdata_info(sdata, "associate with %pM (try %d/%d)\n",
3291 assoc_data->bss->bssid, assoc_data->tries,
3292 IEEE80211_ASSOC_MAX_TRIES);
66e67e41
JB		 3293 ieee80211_send_assoc(sdata);
3294
1672c0e3
JB		 3295 if (!(local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)) {
3296 assoc_data->timeout = jiffies + IEEE80211_ASSOC_TIMEOUT;
89afe614 3297 assoc_data->timeout_started = true;
8d61ffa5 3298 run_again(sdata, assoc_data->timeout);
89afe614 3299 } else {
cb236d2d
JB		 3300 assoc_data->timeout =
3301 round_jiffies_up(jiffies +
3302 IEEE80211_ASSOC_TIMEOUT_LONG);
3303 assoc_data->timeout_started = true;
3304 run_again(sdata, assoc_data->timeout);
1672c0e3 3305 }
66e67e41
JB		 3306
3307 return 0;
3308}
3309
1672c0e3
JB		 3310void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata,
3311 __le16 fc, bool acked)
3312{
3313 struct ieee80211_local *local = sdata->local;
3314
3315 sdata->u.mgd.status_fc = fc;
3316 sdata->u.mgd.status_acked = acked;
3317 sdata->u.mgd.status_received = true;
3318
3319 ieee80211_queue_work(&local->hw, &sdata->work);
3320}
3321
1fa57d01 3322void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata)
9c6bd790 3323{
9c6bd790 3324 struct ieee80211_local *local = sdata->local;
1fa57d01 3325 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
9c6bd790 3326
8d61ffa5 3327 sdata_lock(sdata);
77fdaa12 3328
1672c0e3
JB		 3329 if (ifmgd->status_received) {
3330 __le16 fc = ifmgd->status_fc;
3331 bool status_acked = ifmgd->status_acked;
3332
3333 ifmgd->status_received = false;
3334 if (ifmgd->auth_data &&
3335 (ieee80211_is_probe_req(fc) || ieee80211_is_auth(fc))) {
3336 if (status_acked) {
3337 ifmgd->auth_data->timeout =
3338 jiffies + IEEE80211_AUTH_TIMEOUT_SHORT;
8d61ffa5 3339 run_again(sdata, ifmgd->auth_data->timeout);
1672c0e3
JB		 3340 } else {
3341 ifmgd->auth_data->timeout = jiffies - 1;
3342 }
89afe614 3343 ifmgd->auth_data->timeout_started = true;
1672c0e3
JB		 3344 } else if (ifmgd->assoc_data &&
3345 (ieee80211_is_assoc_req(fc) ||
3346 ieee80211_is_reassoc_req(fc))) {
3347 if (status_acked) {
3348 ifmgd->assoc_data->timeout =
3349 jiffies + IEEE80211_ASSOC_TIMEOUT_SHORT;
8d61ffa5 3350 run_again(sdata, ifmgd->assoc_data->timeout);
1672c0e3
JB		 3351 } else {
3352 ifmgd->assoc_data->timeout = jiffies - 1;
3353 }
89afe614 3354 ifmgd->assoc_data->timeout_started = true;
1672c0e3
JB		 3355 }
3356 }
3357
89afe614 3358 if (ifmgd->auth_data && ifmgd->auth_data->timeout_started &&
66e67e41
JB		 3359 time_after(jiffies, ifmgd->auth_data->timeout)) {
3360 if (ifmgd->auth_data->done) {
3361 /*
3362 * ok ... we waited for assoc but userspace didn't,
3363 * so let's just kill the auth data
3364 */
3365 ieee80211_destroy_auth_data(sdata, false);
3366 } else if (ieee80211_probe_auth(sdata)) {
3367 u8 bssid[ETH_ALEN];
3368
3369 memcpy(bssid, ifmgd->auth_data->bss->bssid, ETH_ALEN);
3370
3371 ieee80211_destroy_auth_data(sdata, false);
3372
6ff57cf8 3373 cfg80211_auth_timeout(sdata->dev, bssid);
66e67e41 3374 }
89afe614 3375 } else if (ifmgd->auth_data && ifmgd->auth_data->timeout_started)
8d61ffa5 3376 run_again(sdata, ifmgd->auth_data->timeout);
66e67e41 3377
89afe614 3378 if (ifmgd->assoc_data && ifmgd->assoc_data->timeout_started &&
66e67e41 3379 time_after(jiffies, ifmgd->assoc_data->timeout)) {
989c6505 3380 if ((ifmgd->assoc_data->need_beacon && !ifmgd->have_beacon) ||
66e67e41 3381 ieee80211_do_assoc(sdata)) {
959867fa 3382 struct cfg80211_bss *bss = ifmgd->assoc_data->bss;
66e67e41
JB		 3383
3384 ieee80211_destroy_assoc_data(sdata, false);
959867fa 3385 cfg80211_assoc_timeout(sdata->dev, bss);
66e67e41 3386 }
89afe614 3387 } else if (ifmgd->assoc_data && ifmgd->assoc_data->timeout_started)
8d61ffa5 3388 run_again(sdata, ifmgd->assoc_data->timeout);
66e67e41 3389
392b9ffb 3390 if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL &&
b291ba11 3391 ifmgd->associated) {
a43abf29 3392 u8 bssid[ETH_ALEN];
72a8a3ed 3393 int max_tries;
a43abf29 3394
0c1ad2ca 3395 memcpy(bssid, ifmgd->associated->bssid, ETH_ALEN);
4e5ff376 3396
72a8a3ed 3397 if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)
180205bd 3398 max_tries = max_nullfunc_tries;
72a8a3ed 3399 else
180205bd 3400 max_tries = max_probe_tries;
72a8a3ed 3401
4e5ff376
FF		 3402 /* ACK received for nullfunc probing frame */
3403 if (!ifmgd->probe_send_count)
3404 ieee80211_reset_ap_probe(sdata);
04ac3c0e
FF		 3405 else if (ifmgd->nullfunc_failed) {
3406 if (ifmgd->probe_send_count < max_tries) {
bdcbd8e0
JB		 3407 mlme_dbg(sdata,
3408 "No ack for nullfunc frame to AP %pM, try %d/%i\n",
3409 bssid, ifmgd->probe_send_count,
3410 max_tries);
04ac3c0e
FF		 3411 ieee80211_mgd_probe_ap_send(sdata);
3412 } else {
bdcbd8e0
JB		 3413 mlme_dbg(sdata,
3414 "No ack for nullfunc frame to AP %pM, disconnecting.\n",
3415 bssid);
95acac61 3416 ieee80211_sta_connection_lost(sdata, bssid,
6b684db1
JB		 3417 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY,
3418 false);
04ac3c0e
FF		 3419 }
3420 } else if (time_is_after_jiffies(ifmgd->probe_timeout))
8d61ffa5 3421 run_again(sdata, ifmgd->probe_timeout);
04ac3c0e 3422 else if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) {
bdcbd8e0
JB		 3423 mlme_dbg(sdata,
3424 "Failed to send nullfunc to AP %pM after %dms, disconnecting\n",
3425 bssid, probe_wait_ms);
95acac61 3426 ieee80211_sta_connection_lost(sdata, bssid,
6b684db1 3427 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, false);
04ac3c0e 3428 } else if (ifmgd->probe_send_count < max_tries) {
bdcbd8e0
JB		 3429 mlme_dbg(sdata,
3430 "No probe response from AP %pM after %dms, try %d/%i\n",
3431 bssid, probe_wait_ms,
3432 ifmgd->probe_send_count, max_tries);
a43abf29
ML		 3433 ieee80211_mgd_probe_ap_send(sdata);
3434 } else {
b291ba11
JB		 3435 /*
3436 * We actually lost the connection ... or did we?
3437 * Let's make sure!
3438 */
b38afa87
BG		 3439 wiphy_debug(local->hw.wiphy,
3440 "%s: No probe response from AP %pM"
3441 " after %dms, disconnecting.\n",
3442 sdata->name,
180205bd 3443 bssid, probe_wait_ms);
04ac3c0e 3444
95acac61 3445 ieee80211_sta_connection_lost(sdata, bssid,
6b684db1 3446 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, false);
b291ba11
JB		 3447 }
3448 }
3449
8d61ffa5 3450 sdata_unlock(sdata);
f0706e82
JB		 3451}
3452
b291ba11
JB		 3453static void ieee80211_sta_bcn_mon_timer(unsigned long data)
3454{
3455 struct ieee80211_sub_if_data *sdata =
3456 (struct ieee80211_sub_if_data *) data;
3457 struct ieee80211_local *local = sdata->local;
3458
3459 if (local->quiescing)
3460 return;
3461
682bd38b 3462 sdata->u.mgd.connection_loss = false;
1e4dcd01
JO		 3463 ieee80211_queue_work(&sdata->local->hw,
3464 &sdata->u.mgd.beacon_connection_loss_work);
b291ba11
JB		 3465}
3466
3467static void ieee80211_sta_conn_mon_timer(unsigned long data)
3468{
3469 struct ieee80211_sub_if_data *sdata =
3470 (struct ieee80211_sub_if_data *) data;
3471 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3472 struct ieee80211_local *local = sdata->local;
3473
3474 if (local->quiescing)
3475 return;
3476
42935eca 3477 ieee80211_queue_work(&local->hw, &ifmgd->monitor_work);
b291ba11
JB		 3478}
3479
3480static void ieee80211_sta_monitor_work(struct work_struct *work)
3481{
3482 struct ieee80211_sub_if_data *sdata =
3483 container_of(work, struct ieee80211_sub_if_data,
3484 u.mgd.monitor_work);
3485
3486 ieee80211_mgd_probe_ap(sdata, false);
3487}
3488
9c6bd790
JB		 3489static void ieee80211_restart_sta_timer(struct ieee80211_sub_if_data *sdata)
3490{
494f1fe5
EP		 3491 u32 flags;
3492
ad935687 3493 if (sdata->vif.type == NL80211_IFTYPE_STATION) {
925e64c3 3494 __ieee80211_stop_poll(sdata);
ad935687 3495
b291ba11 3496 /* let's probe the connection once */
494f1fe5
EP		 3497 flags = sdata->local->hw.flags;
3498 if (!(flags & IEEE80211_HW_CONNECTION_MONITOR))
3499 ieee80211_queue_work(&sdata->local->hw,
3500 &sdata->u.mgd.monitor_work);
b291ba11 3501 /* and do all the other regular work too */
64592c8f 3502 ieee80211_queue_work(&sdata->local->hw, &sdata->work);
ad935687 3503 }
9c6bd790 3504}
f0706e82 3505
b8360ab8
JB		 3506#ifdef CONFIG_PM
3507void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata)
3508{
3509 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3510
8d61ffa5 3511 sdata_lock(sdata);
b8360ab8 3512 if (!ifmgd->associated) {
8d61ffa5 3513 sdata_unlock(sdata);
b8360ab8
JB		 3514 return;
3515 }
3516
3517 if (sdata->flags & IEEE80211_SDATA_DISCONNECT_RESUME) {
3518 sdata->flags &= ~IEEE80211_SDATA_DISCONNECT_RESUME;
3519 mlme_dbg(sdata, "driver requested disconnect after resume\n");
3520 ieee80211_sta_connection_lost(sdata,
3521 ifmgd->associated->bssid,
3522 WLAN_REASON_UNSPECIFIED,
3523 true);
8d61ffa5 3524 sdata_unlock(sdata);
b8360ab8
JB		 3525 return;
3526 }
8d61ffa5 3527 sdata_unlock(sdata);
b8360ab8
JB		 3528}
3529#endif
3530
9c6bd790
JB		 3531/* interface setup */
3532void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata)
f0706e82 3533{
46900298 3534 struct ieee80211_if_managed *ifmgd;
988c0f72 3535
46900298 3536 ifmgd = &sdata->u.mgd;
b291ba11 3537 INIT_WORK(&ifmgd->monitor_work, ieee80211_sta_monitor_work);
46900298 3538 INIT_WORK(&ifmgd->chswitch_work, ieee80211_chswitch_work);
1e4dcd01
JO		 3539 INIT_WORK(&ifmgd->beacon_connection_loss_work,
3540 ieee80211_beacon_connection_loss_work);
882a7c69
JB		 3541 INIT_WORK(&ifmgd->csa_connection_drop_work,
3542 ieee80211_csa_connection_drop_work);
687da132 3543 INIT_WORK(&ifmgd->request_smps_work, ieee80211_request_smps_mgd_work);
46900298 3544 setup_timer(&ifmgd->timer, ieee80211_sta_timer,
c481ec97 3545 (unsigned long) sdata);
b291ba11
JB		 3546 setup_timer(&ifmgd->bcn_mon_timer, ieee80211_sta_bcn_mon_timer,
3547 (unsigned long) sdata);
3548 setup_timer(&ifmgd->conn_mon_timer, ieee80211_sta_conn_mon_timer,
3549 (unsigned long) sdata);
46900298 3550 setup_timer(&ifmgd->chswitch_timer, ieee80211_chswitch_timer,
9c6bd790 3551 (unsigned long) sdata);
9c6bd790 3552
ab1faead 3553 ifmgd->flags = 0;
1478acb3 3554 ifmgd->powersave = sdata->wdev.ps;
219c3867
AB		 3555 ifmgd->uapsd_queues = sdata->local->hw.uapsd_queues;
3556 ifmgd->uapsd_max_sp_len = sdata->local->hw.uapsd_max_sp_len;
67baf663 3557 ifmgd->p2p_noa_index = -1;
bbbdff9e 3558
0f78231b
JB		 3559 if (sdata->local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS)
3560 ifmgd->req_smps = IEEE80211_SMPS_AUTOMATIC;
3561 else
3562 ifmgd->req_smps = IEEE80211_SMPS_OFF;
f0706e82
JB		 3563}
3564
77fdaa12
JB		 3565/* scan finished notification */
3566void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local)
60f8b39c 3567{
31ee67a1 3568 struct ieee80211_sub_if_data *sdata;
60f8b39c 3569
77fdaa12
JB		 3570 /* Restart STA timers */
3571 rcu_read_lock();
370bd005
BG		 3572 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
3573 if (ieee80211_sdata_running(sdata))
3574 ieee80211_restart_sta_timer(sdata);
3575 }
77fdaa12
JB		 3576 rcu_read_unlock();
3577}
60f8b39c 3578
77fdaa12
JB		 3579int ieee80211_max_network_latency(struct notifier_block *nb,
3580 unsigned long data, void *dummy)
3581{
3582 s32 latency_usec = (s32) data;
3583 struct ieee80211_local *local =
3584 container_of(nb, struct ieee80211_local,
3585 network_latency_notifier);
1fa6f4af 3586
77fdaa12
JB		 3587 mutex_lock(&local->iflist_mtx);
3588 ieee80211_recalc_ps(local, latency_usec);
3589 mutex_unlock(&local->iflist_mtx);
dfe67012 3590
77fdaa12 3591 return 0;
9c6bd790
JB		 3592}
3593
f2d9d270
JB		 3594static u8 ieee80211_ht_vht_rx_chains(struct ieee80211_sub_if_data *sdata,
3595 struct cfg80211_bss *cbss)
3596{
3597 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3598 const u8 *ht_cap_ie, *vht_cap_ie;
3599 const struct ieee80211_ht_cap *ht_cap;
3600 const struct ieee80211_vht_cap *vht_cap;
3601 u8 chains = 1;
3602
3603 if (ifmgd->flags & IEEE80211_STA_DISABLE_HT)
3604 return chains;
3605
9caf0364 3606 ht_cap_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_HT_CAPABILITY);
f2d9d270
JB		 3607 if (ht_cap_ie && ht_cap_ie[1] >= sizeof(*ht_cap)) {
3608 ht_cap = (void *)(ht_cap_ie + 2);
3609 chains = ieee80211_mcs_to_chains(&ht_cap->mcs);
3610 /*
3611 * TODO: use "Tx Maximum Number Spatial Streams Supported" and
3612 * "Tx Unequal Modulation Supported" fields.
3613 */
3614 }
3615
3616 if (ifmgd->flags & IEEE80211_STA_DISABLE_VHT)
3617 return chains;
3618
9caf0364 3619 vht_cap_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_VHT_CAPABILITY);
f2d9d270
JB		 3620 if (vht_cap_ie && vht_cap_ie[1] >= sizeof(*vht_cap)) {
3621 u8 nss;
3622 u16 tx_mcs_map;
3623
3624 vht_cap = (void *)(vht_cap_ie + 2);
3625 tx_mcs_map = le16_to_cpu(vht_cap->supp_mcs.tx_mcs_map);
3626 for (nss = 8; nss > 0; nss--) {
3627 if (((tx_mcs_map >> (2 * (nss - 1))) & 3) !=
3628 IEEE80211_VHT_MCS_NOT_SUPPORTED)
3629 break;
3630 }
3631 /* TODO: use "Tx Highest Supported Long GI Data Rate" field? */
3632 chains = max(chains, nss);
3633 }
3634
3635 return chains;
3636}
3637
b17166a7
JB		 3638static int ieee80211_prep_channel(struct ieee80211_sub_if_data *sdata,
3639 struct cfg80211_bss *cbss)
a1cf775d
JB		 3640{
3641 struct ieee80211_local *local = sdata->local;
3642 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
24398e39 3643 const struct ieee80211_ht_operation *ht_oper = NULL;
f2d9d270 3644 const struct ieee80211_vht_operation *vht_oper = NULL;
24398e39 3645 struct ieee80211_supported_band *sband;
4bf88530 3646 struct cfg80211_chan_def chandef;
f2d9d270 3647 int ret;
a1cf775d 3648
24398e39
JB		 3649 sband = local->hw.wiphy->bands[cbss->channel->band];
3650
f2d9d270
JB		 3651 ifmgd->flags &= ~(IEEE80211_STA_DISABLE_40MHZ |
3652 IEEE80211_STA_DISABLE_80P80MHZ |
3653 IEEE80211_STA_DISABLE_160MHZ);
3654
9caf0364
JB		 3655 rcu_read_lock();
3656
f2d9d270
JB		 3657 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT) &&
3658 sband->ht_cap.ht_supported) {
08e6effa 3659 const u8 *ht_oper_ie, *ht_cap;
24398e39 3660
9caf0364 3661 ht_oper_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_HT_OPERATION);
24398e39
JB		 3662 if (ht_oper_ie && ht_oper_ie[1] >= sizeof(*ht_oper))
3663 ht_oper = (void *)(ht_oper_ie + 2);
08e6effa
JB		 3664
3665 ht_cap = ieee80211_bss_get_ie(cbss, WLAN_EID_HT_CAPABILITY);
3666 if (!ht_cap || ht_cap[1] < sizeof(struct ieee80211_ht_cap)) {
3667 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
3668 ht_oper = NULL;
3669 }
24398e39
JB		 3670 }
3671
f2d9d270
JB		 3672 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) &&
3673 sband->vht_cap.vht_supported) {
08e6effa 3674 const u8 *vht_oper_ie, *vht_cap;
f2d9d270 3675
9caf0364
JB		 3676 vht_oper_ie = ieee80211_bss_get_ie(cbss,
3677 WLAN_EID_VHT_OPERATION);
f2d9d270
JB		 3678 if (vht_oper_ie && vht_oper_ie[1] >= sizeof(*vht_oper))
3679 vht_oper = (void *)(vht_oper_ie + 2);
3680 if (vht_oper && !ht_oper) {
3681 vht_oper = NULL;
bdcbd8e0 3682 sdata_info(sdata,
f2d9d270 3683 "AP advertised VHT without HT, disabling both\n");
cb145022
JB		 3684 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
3685 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
24398e39 3686 }
08e6effa
JB		 3687
3688 vht_cap = ieee80211_bss_get_ie(cbss, WLAN_EID_VHT_CAPABILITY);
3689 if (!vht_cap || vht_cap[1] < sizeof(struct ieee80211_vht_cap)) {
3690 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
3691 vht_oper = NULL;
3692 }
24398e39
JB		 3693 }
3694
f2d9d270
JB		 3695 ifmgd->flags |= ieee80211_determine_chantype(sdata, sband,
3696 cbss->channel,
3697 ht_oper, vht_oper,
5cdaed1e 3698 &chandef, false);
04ecd257 3699
f2d9d270
JB		 3700 sdata->needed_rx_chains = min(ieee80211_ht_vht_rx_chains(sdata, cbss),
3701 local->rx_chains);
24398e39 3702
9caf0364
JB		 3703 rcu_read_unlock();
3704
04ecd257
JB		 3705 /* will change later if needed */
3706 sdata->smps_mode = IEEE80211_SMPS_OFF;
3707
34a3740d 3708 mutex_lock(&local->mtx);
f2d9d270
JB		 3709 /*
3710 * If this fails (possibly due to channel context sharing
3711 * on incompatible channels, e.g. 80+80 and 160 sharing the
3712 * same control channel) try to use a smaller bandwidth.
3713 */
3714 ret = ieee80211_vif_use_channel(sdata, &chandef,
3715 IEEE80211_CHANCTX_SHARED);
0418a445
SW		 3716
3717 /* don't downgrade for 5 and 10 MHz channels, though. */
3718 if (chandef.width == NL80211_CHAN_WIDTH_5 ||
3719 chandef.width == NL80211_CHAN_WIDTH_10)
34a3740d 3720 goto out;
0418a445 3721
d601cd8d 3722 while (ret && chandef.width != NL80211_CHAN_WIDTH_20_NOHT) {
e6b7cde4 3723 ifmgd->flags |= ieee80211_chandef_downgrade(&chandef);
d601cd8d
JB		 3724 ret = ieee80211_vif_use_channel(sdata, &chandef,
3725 IEEE80211_CHANCTX_SHARED);
3726 }
34a3740d
JB		 3727 out:
3728 mutex_unlock(&local->mtx);
f2d9d270 3729 return ret;
b17166a7
JB		 3730}
3731
3732static int ieee80211_prep_connection(struct ieee80211_sub_if_data *sdata,
3733 struct cfg80211_bss *cbss, bool assoc)
3734{
3735 struct ieee80211_local *local = sdata->local;
3736 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3737 struct ieee80211_bss *bss = (void *)cbss->priv;
3738 struct sta_info *new_sta = NULL;
3739 bool have_sta = false;
3740 int err;
3741
3742 if (WARN_ON(!ifmgd->auth_data && !ifmgd->assoc_data))
3743 return -EINVAL;
3744
3745 if (assoc) {
3746 rcu_read_lock();
3747 have_sta = sta_info_get(sdata, cbss->bssid);
3748 rcu_read_unlock();
3749 }
3750
3751 if (!have_sta) {
3752 new_sta = sta_info_alloc(sdata, cbss->bssid, GFP_KERNEL);
3753 if (!new_sta)
3754 return -ENOMEM;
3755 }
13e0c8e3 3756 if (new_sta) {
5d6a1b06
JB		 3757 u32 rates = 0, basic_rates = 0;
3758 bool have_higher_than_11mbit;
3759 int min_rate = INT_MAX, min_rate_index = -1;
2103dec1 3760 struct ieee80211_chanctx_conf *chanctx_conf;
b17166a7 3761 struct ieee80211_supported_band *sband;
8cef2c9d 3762 const struct cfg80211_bss_ies *ies;
2103dec1
SW		 3763 int shift;
3764 u32 rate_flags;
b17166a7
JB		 3765
3766 sband = local->hw.wiphy->bands[cbss->channel->band];
3767
3768 err = ieee80211_prep_channel(sdata, cbss);
3769 if (err) {
3770 sta_info_free(local, new_sta);
2103dec1 3771 return -EINVAL;
b17166a7 3772 }
2103dec1
SW		 3773 shift = ieee80211_vif_get_shift(&sdata->vif);
3774
3775 rcu_read_lock();
3776 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3777 if (WARN_ON(!chanctx_conf)) {
3778 rcu_read_unlock();
c368ddaa 3779 sta_info_free(local, new_sta);
2103dec1
SW		 3780 return -EINVAL;
3781 }
3782 rate_flags = ieee80211_chandef_rate_flags(&chanctx_conf->def);
3783 rcu_read_unlock();
5d6a1b06 3784
5d6a1b06
JB		 3785 ieee80211_get_rates(sband, bss->supp_rates,
3786 bss->supp_rates_len,
3787 &rates, &basic_rates,
3788 &have_higher_than_11mbit,
2103dec1
SW		 3789 &min_rate, &min_rate_index,
3790 shift, rate_flags);
5d6a1b06
JB		 3791
3792 /*
3793 * This used to be a workaround for basic rates missing
3794 * in the association response frame. Now that we no
3795 * longer use the basic rates from there, it probably
3796 * doesn't happen any more, but keep the workaround so
3797 * in case some *other* APs are buggy in different ways
3798 * we can connect -- with a warning.
3799 */
3800 if (!basic_rates && min_rate_index >= 0) {
bdcbd8e0
JB		 3801 sdata_info(sdata,
3802 "No basic rates, using min rate instead\n");
5d6a1b06
JB		 3803 basic_rates = BIT(min_rate_index);
3804 }
3805
13e0c8e3 3806 new_sta->sta.supp_rates[cbss->channel->band] = rates;
5d6a1b06
JB		 3807 sdata->vif.bss_conf.basic_rates = basic_rates;
3808
3809 /* cf. IEEE 802.11 9.2.12 */
55de908a 3810 if (cbss->channel->band == IEEE80211_BAND_2GHZ &&
5d6a1b06
JB		 3811 have_higher_than_11mbit)
3812 sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE;
3813 else
3814 sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE;
3815
3816 memcpy(ifmgd->bssid, cbss->bssid, ETH_ALEN);
3817
8c358bcd
JB		 3818 /* set timing information */
3819 sdata->vif.bss_conf.beacon_int = cbss->beacon_interval;
8cef2c9d 3820 rcu_read_lock();
ef429dad
JB		 3821 ies = rcu_dereference(cbss->beacon_ies);
3822 if (ies) {
3823 const u8 *tim_ie;
3824
3825 sdata->vif.bss_conf.sync_tsf = ies->tsf;
3826 sdata->vif.bss_conf.sync_device_ts =
3827 bss->device_ts_beacon;
3828 tim_ie = cfg80211_find_ie(WLAN_EID_TIM,
3829 ies->data, ies->len);
3830 if (tim_ie && tim_ie[1] >= 2)
3831 sdata->vif.bss_conf.sync_dtim_count = tim_ie[2];
3832 else
3833 sdata->vif.bss_conf.sync_dtim_count = 0;
3834 } else if (!(local->hw.flags &
3835 IEEE80211_HW_TIMING_BEACON_ONLY)) {
3836 ies = rcu_dereference(cbss->proberesp_ies);
3837 /* must be non-NULL since beacon IEs were NULL */
3838 sdata->vif.bss_conf.sync_tsf = ies->tsf;
3839 sdata->vif.bss_conf.sync_device_ts =
3840 bss->device_ts_presp;
3841 sdata->vif.bss_conf.sync_dtim_count = 0;
3842 } else {
3843 sdata->vif.bss_conf.sync_tsf = 0;
3844 sdata->vif.bss_conf.sync_device_ts = 0;
3845 sdata->vif.bss_conf.sync_dtim_count = 0;
3846 }
8cef2c9d 3847 rcu_read_unlock();
8c358bcd
JB		 3848
3849 /* tell driver about BSSID, basic rates and timing */
5d6a1b06 3850 ieee80211_bss_info_change_notify(sdata,
8c358bcd
JB		 3851 BSS_CHANGED_BSSID | BSS_CHANGED_BASIC_RATES |
3852 BSS_CHANGED_BEACON_INT);
a1cf775d
JB		 3853
3854 if (assoc)
13e0c8e3 3855 sta_info_pre_move_state(new_sta, IEEE80211_STA_AUTH);
a1cf775d 3856
13e0c8e3
JB		 3857 err = sta_info_insert(new_sta);
3858 new_sta = NULL;
a1cf775d 3859 if (err) {
bdcbd8e0
JB		 3860 sdata_info(sdata,
3861 "failed to insert STA entry for the AP (error %d)\n",
3862 err);
a1cf775d
JB		 3863 return err;
3864 }
3865 } else
b203ca39 3866 WARN_ON_ONCE(!ether_addr_equal(ifmgd->bssid, cbss->bssid));
a1cf775d
JB		 3867
3868 return 0;
3869}
3870
77fdaa12
JB		 3871/* config hooks */
3872int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
3873 struct cfg80211_auth_request *req)
9c6bd790 3874{
66e67e41
JB		 3875 struct ieee80211_local *local = sdata->local;
3876 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3877 struct ieee80211_mgd_auth_data *auth_data;
77fdaa12 3878 u16 auth_alg;
66e67e41
JB		 3879 int err;
3880
3881 /* prepare auth data structure */
9c6bd790 3882
77fdaa12
JB		 3883 switch (req->auth_type) {
3884 case NL80211_AUTHTYPE_OPEN_SYSTEM:
3885 auth_alg = WLAN_AUTH_OPEN;
3886 break;
3887 case NL80211_AUTHTYPE_SHARED_KEY:
66e67e41 3888 if (IS_ERR(local->wep_tx_tfm))
9dca9c49 3889 return -EOPNOTSUPP;
77fdaa12
JB		 3890 auth_alg = WLAN_AUTH_SHARED_KEY;
3891 break;
3892 case NL80211_AUTHTYPE_FT:
3893 auth_alg = WLAN_AUTH_FT;
3894 break;
3895 case NL80211_AUTHTYPE_NETWORK_EAP:
3896 auth_alg = WLAN_AUTH_LEAP;
3897 break;
6b8ece3a
JM		 3898 case NL80211_AUTHTYPE_SAE:
3899 auth_alg = WLAN_AUTH_SAE;
3900 break;
77fdaa12
JB		 3901 default:
3902 return -EOPNOTSUPP;
60f8b39c 3903 }
77fdaa12 3904
6b8ece3a
JM		 3905 auth_data = kzalloc(sizeof(*auth_data) + req->sae_data_len +
3906 req->ie_len, GFP_KERNEL);
66e67e41 3907 if (!auth_data)
9c6bd790 3908 return -ENOMEM;
77fdaa12 3909
66e67e41 3910 auth_data->bss = req->bss;
77fdaa12 3911
6b8ece3a
JM		 3912 if (req->sae_data_len >= 4) {
3913 __le16 *pos = (__le16 *) req->sae_data;
3914 auth_data->sae_trans = le16_to_cpu(pos[0]);
3915 auth_data->sae_status = le16_to_cpu(pos[1]);
3916 memcpy(auth_data->data, req->sae_data + 4,
3917 req->sae_data_len - 4);
3918 auth_data->data_len += req->sae_data_len - 4;
3919 }
3920
77fdaa12 3921 if (req->ie && req->ie_len) {
6b8ece3a
JM		 3922 memcpy(&auth_data->data[auth_data->data_len],
3923 req->ie, req->ie_len);
3924 auth_data->data_len += req->ie_len;
9c6bd790 3925 }
77fdaa12 3926
fffd0934 3927 if (req->key && req->key_len) {
66e67e41
JB		 3928 auth_data->key_len = req->key_len;
3929 auth_data->key_idx = req->key_idx;
3930 memcpy(auth_data->key, req->key, req->key_len);
fffd0934
JB		 3931 }
3932
66e67e41 3933 auth_data->algorithm = auth_alg;
60f8b39c 3934
66e67e41 3935 /* try to authenticate/probe */
2a33bee2 3936
66e67e41
JB		 3937 if ((ifmgd->auth_data && !ifmgd->auth_data->done) ||
3938 ifmgd->assoc_data) {
3939 err = -EBUSY;
3940 goto err_free;
2a33bee2
GE		 3941 }
3942
66e67e41
JB		 3943 if (ifmgd->auth_data)
3944 ieee80211_destroy_auth_data(sdata, false);
2a33bee2 3945
66e67e41
JB		 3946 /* prep auth_data so we don't go into idle on disassoc */
3947 ifmgd->auth_data = auth_data;
af6b6374 3948
7b119dc0
JB		 3949 if (ifmgd->associated) {
3950 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
3951
3952 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
3953 WLAN_REASON_UNSPECIFIED,
3954 false, frame_buf);
3955
6ff57cf8
JB		 3956 cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf,
3957 sizeof(frame_buf));
7b119dc0 3958 }
af6b6374 3959
bdcbd8e0 3960 sdata_info(sdata, "authenticate with %pM\n", req->bss->bssid);
e5b900d2 3961
a1cf775d
JB		 3962 err = ieee80211_prep_connection(sdata, req->bss, false);
3963 if (err)
66e67e41 3964 goto err_clear;
af6b6374 3965
66e67e41
JB		 3966 err = ieee80211_probe_auth(sdata);
3967 if (err) {
66e67e41
JB		 3968 sta_info_destroy_addr(sdata, req->bss->bssid);
3969 goto err_clear;
3970 }
3971
3972 /* hold our own reference */
5b112d3d 3973 cfg80211_ref_bss(local->hw.wiphy, auth_data->bss);
8d61ffa5 3974 return 0;
66e67e41
JB		 3975
3976 err_clear:
3d2abdfd
EP		 3977 memset(ifmgd->bssid, 0, ETH_ALEN);
3978 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID);
66e67e41
JB		 3979 ifmgd->auth_data = NULL;
3980 err_free:
3981 kfree(auth_data);
66e67e41 3982 return err;
af6b6374
JB		 3983}
3984
095d81ce
JB		 3985static bool ieee80211_usable_wmm_params(struct ieee80211_sub_if_data *sdata,
3986 const u8 *wmm_param, int len)
3987{
3988 const u8 *pos;
3989 size_t left;
3990
3991 if (len < 8)
3992 return false;
3993
3994 if (wmm_param[5] != 1 /* version */)
3995 return false;
3996
3997 pos = wmm_param + 8;
3998 left = len - 8;
3999
4000 for (; left >= 4; left -= 4, pos += 4) {
4001 u8 aifsn = pos[0] & 0x0f;
4002 u8 ecwmin = pos[1] & 0x0f;
4003 u8 ecwmax = (pos[1] & 0xf0) >> 4;
4004 int aci = (pos[0] >> 5) & 0x03;
4005
4006 if (aifsn < 2) {
4007 sdata_info(sdata,
4008 "AP has invalid WMM params (AIFSN=%d for ACI %d), disabling WMM\n",
4009 aifsn, aci);
4010 return false;
4011 }
4012 if (ecwmin > ecwmax) {
4013 sdata_info(sdata,
4014 "AP has invalid WMM params (ECWmin/max=%d/%d for ACI %d), disabling WMM\n",
4015 ecwmin, ecwmax, aci);
4016 return false;
4017 }
4018 }
4019
4020 return true;
4021}
4022
77fdaa12
JB		 4023int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
4024 struct cfg80211_assoc_request *req)
f0706e82 4025{
66e67e41 4026 struct ieee80211_local *local = sdata->local;
77fdaa12 4027 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
0c1ad2ca 4028 struct ieee80211_bss *bss = (void *)req->bss->priv;
66e67e41 4029 struct ieee80211_mgd_assoc_data *assoc_data;
c65dd147 4030 const struct cfg80211_bss_ies *beacon_ies;
4e74bfdb 4031 struct ieee80211_supported_band *sband;
b08fbbd8 4032 const u8 *ssidie, *ht_ie, *vht_ie;
2a33bee2 4033 int i, err;
f0706e82 4034
66e67e41
JB		 4035 assoc_data = kzalloc(sizeof(*assoc_data) + req->ie_len, GFP_KERNEL);
4036 if (!assoc_data)
4037 return -ENOMEM;
4038
9caf0364
JB		 4039 rcu_read_lock();
4040 ssidie = ieee80211_bss_get_ie(req->bss, WLAN_EID_SSID);
4041 if (!ssidie) {
4042 rcu_read_unlock();
4043 kfree(assoc_data);
4044 return -EINVAL;
4045 }
4046 memcpy(assoc_data->ssid, ssidie + 2, ssidie[1]);
4047 assoc_data->ssid_len = ssidie[1];
4048 rcu_read_unlock();
4049
7b119dc0
JB		 4050 if (ifmgd->associated) {
4051 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
4052
4053 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
4054 WLAN_REASON_UNSPECIFIED,
4055 false, frame_buf);
4056
6ff57cf8
JB		 4057 cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf,
4058 sizeof(frame_buf));
7b119dc0 4059 }
66e67e41
JB		 4060
4061 if (ifmgd->auth_data && !ifmgd->auth_data->done) {
4062 err = -EBUSY;
4063 goto err_free;
af6b6374 4064 }
77fdaa12 4065
66e67e41
JB		 4066 if (ifmgd->assoc_data) {
4067 err = -EBUSY;
4068 goto err_free;
4069 }
77fdaa12 4070
66e67e41
JB		 4071 if (ifmgd->auth_data) {
4072 bool match;
4073
4074 /* keep sta info, bssid if matching */
b203ca39 4075 match = ether_addr_equal(ifmgd->bssid, req->bss->bssid);
66e67e41 4076 ieee80211_destroy_auth_data(sdata, match);
2a33bee2
GE		 4077 }
4078
66e67e41 4079 /* prepare assoc data */
095d81ce 4080
d8ec4433
JO		 4081 ifmgd->beacon_crc_valid = false;
4082
095d81ce
JB		 4083 assoc_data->wmm = bss->wmm_used &&
4084 (local->hw.queues >= IEEE80211_NUM_ACS);
4085 if (assoc_data->wmm) {
4086 /* try to check validity of WMM params IE */
4087 const struct cfg80211_bss_ies *ies;
4088 const u8 *wp, *start, *end;
4089
4090 rcu_read_lock();
4091 ies = rcu_dereference(req->bss->ies);
4092 start = ies->data;
4093 end = start + ies->len;
4094
4095 while (true) {
4096 wp = cfg80211_find_vendor_ie(
4097 WLAN_OUI_MICROSOFT,
4098 WLAN_OUI_TYPE_MICROSOFT_WMM,
4099 start, end - start);
4100 if (!wp)
4101 break;
4102 start = wp + wp[1] + 2;
4103 /* if this IE is too short, try the next */
4104 if (wp[1] <= 4)
4105 continue;
4106 /* if this IE is WMM params, we found what we wanted */
4107 if (wp[6] == 1)
4108 break;
4109 }
4110
4111 if (!wp || !ieee80211_usable_wmm_params(sdata, wp + 2,
4112 wp[1] - 2)) {
4113 assoc_data->wmm = false;
4114 ifmgd->flags |= IEEE80211_STA_DISABLE_WMM;
4115 }
4116 rcu_read_unlock();
4117 }
4118
de5036aa
JB		 4119 /*
4120 * IEEE802.11n does not allow TKIP/WEP as pairwise ciphers in HT mode.
4121 * We still associate in non-HT mode (11a/b/g) if any one of these
4122 * ciphers is configured as pairwise.
4123 * We can set this to true for non-11n hardware, that'll be checked
4124 * separately along with the peer capabilities.
4125 */
1c4cb928 4126 for (i = 0; i < req->crypto.n_ciphers_pairwise; i++) {
77fdaa12
JB		 4127 if (req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_WEP40 ||
4128 req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_TKIP ||
1c4cb928 4129 req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_WEP104) {
a8243b72 4130 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
d545daba 4131 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
1c4cb928 4132 netdev_info(sdata->dev,
d545daba 4133 "disabling HT/VHT due to WEP/TKIP use\n");
1c4cb928
JB		 4134 }
4135 }
77fdaa12 4136
d545daba 4137 if (req->flags & ASSOC_REQ_DISABLE_HT) {
a8243b72 4138 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
d545daba
MP		 4139 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
4140 }
ef96a842 4141
dd5ecfea
JB		 4142 if (req->flags & ASSOC_REQ_DISABLE_VHT)
4143 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
4144
4e74bfdb
JB		 4145 /* Also disable HT if we don't support it or the AP doesn't use WMM */
4146 sband = local->hw.wiphy->bands[req->bss->channel->band];
4147 if (!sband->ht_cap.ht_supported ||
095d81ce
JB		 4148 local->hw.queues < IEEE80211_NUM_ACS || !bss->wmm_used ||
4149 ifmgd->flags & IEEE80211_STA_DISABLE_WMM) {
a8243b72 4150 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
095d81ce
JB		 4151 if (!bss->wmm_used &&
4152 !(ifmgd->flags & IEEE80211_STA_DISABLE_WMM))
1b49de26
JB		 4153 netdev_info(sdata->dev,
4154 "disabling HT as WMM/QoS is not supported by the AP\n");
1c4cb928 4155 }
4e74bfdb 4156
d545daba
MP		 4157 /* disable VHT if we don't support it or the AP doesn't use WMM */
4158 if (!sband->vht_cap.vht_supported ||
095d81ce
JB		 4159 local->hw.queues < IEEE80211_NUM_ACS || !bss->wmm_used ||
4160 ifmgd->flags & IEEE80211_STA_DISABLE_WMM) {
d545daba 4161 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
095d81ce
JB		 4162 if (!bss->wmm_used &&
4163 !(ifmgd->flags & IEEE80211_STA_DISABLE_WMM))
1b49de26
JB		 4164 netdev_info(sdata->dev,
4165 "disabling VHT as WMM/QoS is not supported by the AP\n");
d545daba
MP		 4166 }
4167
ef96a842
BG		 4168 memcpy(&ifmgd->ht_capa, &req->ht_capa, sizeof(ifmgd->ht_capa));
4169 memcpy(&ifmgd->ht_capa_mask, &req->ht_capa_mask,
4170 sizeof(ifmgd->ht_capa_mask));
4171
dd5ecfea
JB		 4172 memcpy(&ifmgd->vht_capa, &req->vht_capa, sizeof(ifmgd->vht_capa));
4173 memcpy(&ifmgd->vht_capa_mask, &req->vht_capa_mask,
4174 sizeof(ifmgd->vht_capa_mask));
4175
77fdaa12 4176 if (req->ie && req->ie_len) {
66e67e41
JB		 4177 memcpy(assoc_data->ie, req->ie, req->ie_len);
4178 assoc_data->ie_len = req->ie_len;
4179 }
f679f65d 4180
66e67e41 4181 assoc_data->bss = req->bss;
f679f65d 4182
af6b6374
JB		 4183 if (ifmgd->req_smps == IEEE80211_SMPS_AUTOMATIC) {
4184 if (ifmgd->powersave)
04ecd257 4185 sdata->smps_mode = IEEE80211_SMPS_DYNAMIC;
af6b6374 4186 else
04ecd257 4187 sdata->smps_mode = IEEE80211_SMPS_OFF;
af6b6374 4188 } else
04ecd257 4189 sdata->smps_mode = ifmgd->req_smps;
af6b6374 4190
66e67e41 4191 assoc_data->capability = req->bss->capability;
66e67e41
JB		 4192 assoc_data->supp_rates = bss->supp_rates;
4193 assoc_data->supp_rates_len = bss->supp_rates_len;
9dde6423 4194
9caf0364 4195 rcu_read_lock();
9dde6423
JB		 4196 ht_ie = ieee80211_bss_get_ie(req->bss, WLAN_EID_HT_OPERATION);
4197 if (ht_ie && ht_ie[1] >= sizeof(struct ieee80211_ht_operation))
4198 assoc_data->ap_ht_param =
4199 ((struct ieee80211_ht_operation *)(ht_ie + 2))->ht_param;
4200 else
a8243b72 4201 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
b08fbbd8
JB		 4202 vht_ie = ieee80211_bss_get_ie(req->bss, WLAN_EID_VHT_CAPABILITY);
4203 if (vht_ie && vht_ie[1] >= sizeof(struct ieee80211_vht_cap))
4204 memcpy(&assoc_data->ap_vht_cap, vht_ie + 2,
4205 sizeof(struct ieee80211_vht_cap));
4206 else
4207 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
9caf0364 4208 rcu_read_unlock();
63f170e0 4209
ab13315a 4210 if (bss->wmm_used && bss->uapsd_supported &&
24aa11ab
AB		 4211 (sdata->local->hw.flags & IEEE80211_HW_SUPPORTS_UAPSD) &&
4212 sdata->wmm_acm != 0xff) {
76f0303d 4213 assoc_data->uapsd = true;
ab13315a
KV		 4214 ifmgd->flags |= IEEE80211_STA_UAPSD_ENABLED;
4215 } else {
76f0303d 4216 assoc_data->uapsd = false;
ab13315a
KV		 4217 ifmgd->flags &= ~IEEE80211_STA_UAPSD_ENABLED;
4218 }
4219
77fdaa12 4220 if (req->prev_bssid)
66e67e41 4221 memcpy(assoc_data->prev_bssid, req->prev_bssid, ETH_ALEN);
77fdaa12
JB		 4222
4223 if (req->use_mfp) {
4224 ifmgd->mfp = IEEE80211_MFP_REQUIRED;
4225 ifmgd->flags |= IEEE80211_STA_MFP_ENABLED;
4226 } else {
4227 ifmgd->mfp = IEEE80211_MFP_DISABLED;
4228 ifmgd->flags &= ~IEEE80211_STA_MFP_ENABLED;
4229 }
4230
4231 if (req->crypto.control_port)
4232 ifmgd->flags |= IEEE80211_STA_CONTROL_PORT;
4233 else
4234 ifmgd->flags &= ~IEEE80211_STA_CONTROL_PORT;
4235
a621fa4d
JB		 4236 sdata->control_port_protocol = req->crypto.control_port_ethertype;
4237 sdata->control_port_no_encrypt = req->crypto.control_port_no_encrypt;
2475b1cc
MS		 4238 sdata->encrypt_headroom = ieee80211_cs_headroom(local, &req->crypto,
4239 sdata->vif.type);
a621fa4d 4240
66e67e41
JB		 4241 /* kick off associate process */
4242
4243 ifmgd->assoc_data = assoc_data;
826262c3 4244 ifmgd->dtim_period = 0;
989c6505 4245 ifmgd->have_beacon = false;
66e67e41 4246
a1cf775d
JB		 4247 err = ieee80211_prep_connection(sdata, req->bss, true);
4248 if (err)
4249 goto err_clear;
66e67e41 4250
c65dd147
EG		 4251 rcu_read_lock();
4252 beacon_ies = rcu_dereference(req->bss->beacon_ies);
826262c3 4253
c65dd147
EG		 4254 if (sdata->local->hw.flags & IEEE80211_HW_NEED_DTIM_BEFORE_ASSOC &&
4255 !beacon_ies) {
4256 /*
4257 * Wait up to one beacon interval ...
4258 * should this be more if we miss one?
4259 */
4260 sdata_info(sdata, "waiting for beacon from %pM\n",
4261 ifmgd->bssid);
4262 assoc_data->timeout = TU_TO_EXP_TIME(req->bss->beacon_interval);
89afe614 4263 assoc_data->timeout_started = true;
c65dd147
EG		 4264 assoc_data->need_beacon = true;
4265 } else if (beacon_ies) {
4266 const u8 *tim_ie = cfg80211_find_ie(WLAN_EID_TIM,
4267 beacon_ies->data,
4268 beacon_ies->len);
ef429dad
JB		 4269 u8 dtim_count = 0;
4270
c65dd147
EG		 4271 if (tim_ie && tim_ie[1] >= sizeof(struct ieee80211_tim_ie)) {
4272 const struct ieee80211_tim_ie *tim;
4273 tim = (void *)(tim_ie + 2);
4274 ifmgd->dtim_period = tim->dtim_period;
ef429dad 4275 dtim_count = tim->dtim_count;
826262c3 4276 }
989c6505 4277 ifmgd->have_beacon = true;
66e67e41 4278 assoc_data->timeout = jiffies;
89afe614 4279 assoc_data->timeout_started = true;
ef429dad
JB		 4280
4281 if (local->hw.flags & IEEE80211_HW_TIMING_BEACON_ONLY) {
4282 sdata->vif.bss_conf.sync_tsf = beacon_ies->tsf;
4283 sdata->vif.bss_conf.sync_device_ts =
4284 bss->device_ts_beacon;
4285 sdata->vif.bss_conf.sync_dtim_count = dtim_count;
4286 }
c65dd147
EG		 4287 } else {
4288 assoc_data->timeout = jiffies;
89afe614 4289 assoc_data->timeout_started = true;
66e67e41 4290 }
c65dd147
EG		 4291 rcu_read_unlock();
4292
8d61ffa5 4293 run_again(sdata, assoc_data->timeout);
66e67e41 4294
fcff4f10
PS		 4295 if (bss->corrupt_data) {
4296 char *corrupt_type = "data";
4297 if (bss->corrupt_data & IEEE80211_BSS_CORRUPT_BEACON) {
4298 if (bss->corrupt_data &
4299 IEEE80211_BSS_CORRUPT_PROBE_RESP)
4300 corrupt_type = "beacon and probe response";
4301 else
4302 corrupt_type = "beacon";
4303 } else if (bss->corrupt_data & IEEE80211_BSS_CORRUPT_PROBE_RESP)
4304 corrupt_type = "probe response";
bdcbd8e0
JB		 4305 sdata_info(sdata, "associating with AP with corrupt %s\n",
4306 corrupt_type);
fcff4f10
PS		 4307 }
4308
8d61ffa5 4309 return 0;
66e67e41 4310 err_clear:
3d2abdfd
EP		 4311 memset(ifmgd->bssid, 0, ETH_ALEN);
4312 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID);
66e67e41
JB		 4313 ifmgd->assoc_data = NULL;
4314 err_free:
4315 kfree(assoc_data);
66e67e41 4316 return err;
f0706e82
JB		 4317}
4318
77fdaa12 4319int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
63c9c5e7 4320 struct cfg80211_deauth_request *req)
f0706e82 4321{
46900298 4322 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
6ae16775 4323 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
6863255b 4324 bool tx = !req->local_state_change;
de3d43a3 4325 bool report_frame = false;
f0706e82 4326
bdcbd8e0
JB		 4327 sdata_info(sdata,
4328 "deauthenticating from %pM by local choice (reason=%d)\n",
4329 req->bssid, req->reason_code);
0ff71613 4330
86552017 4331 if (ifmgd->auth_data) {
8c7d857c 4332 drv_mgd_prepare_tx(sdata->local, sdata);
37ad3888
JB		 4333 ieee80211_send_deauth_disassoc(sdata, req->bssid,
4334 IEEE80211_STYPE_DEAUTH,
6863255b 4335 req->reason_code, tx,
37ad3888 4336 frame_buf);
86552017 4337 ieee80211_destroy_auth_data(sdata, false);
86552017 4338
de3d43a3 4339 report_frame = true;
86552017 4340 goto out;
8c7d857c
EG		 4341 }
4342
86552017
JB		 4343 if (ifmgd->associated &&
4344 ether_addr_equal(ifmgd->associated->bssid, req->bssid)) {
4345 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
4346 req->reason_code, tx, frame_buf);
de3d43a3 4347 report_frame = true;
86552017 4348 }
37ad3888 4349
86552017 4350 out:
de3d43a3 4351 if (report_frame)
6ff57cf8
JB		 4352 cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf,
4353 IEEE80211_DEAUTH_FRAME_LEN);
86552017 4354
f0706e82
JB		 4355 return 0;
4356}
84363e6e 4357
77fdaa12 4358int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
63c9c5e7 4359 struct cfg80211_disassoc_request *req)
9c6bd790 4360{
77fdaa12 4361 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
e69e95db 4362 u8 bssid[ETH_ALEN];
6ae16775 4363 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
9c6bd790 4364
8d8b261a
JB		 4365 /*
4366 * cfg80211 should catch this ... but it's racy since
4367 * we can receive a disassoc frame, process it, hand it
4368 * to cfg80211 while that's in a locked section already
4369 * trying to tell us that the user wants to disconnect.
4370 */
8d61ffa5 4371 if (ifmgd->associated != req->bss)
77fdaa12 4372 return -ENOLINK;
77fdaa12 4373
bdcbd8e0
JB		 4374 sdata_info(sdata,
4375 "disassociating from %pM by local choice (reason=%d)\n",
4376 req->bss->bssid, req->reason_code);
0ff71613 4377
e69e95db 4378 memcpy(bssid, req->bss->bssid, ETH_ALEN);
37ad3888
JB		 4379 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DISASSOC,
4380 req->reason_code, !req->local_state_change,
4381 frame_buf);
10f644a4 4382
6ff57cf8
JB		 4383 cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf,
4384 IEEE80211_DEAUTH_FRAME_LEN);
bc83b681 4385
10f644a4
JB		 4386 return 0;
4387}
026331c4 4388
afa762f6 4389void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata)
54e4ffb2
JB		 4390{
4391 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4392
49921859
BG		 4393 /*
4394 * Make sure some work items will not run after this,
4395 * they will not do anything but might not have been
4396 * cancelled when disconnecting.
4397 */
4398 cancel_work_sync(&ifmgd->monitor_work);
4399 cancel_work_sync(&ifmgd->beacon_connection_loss_work);
4400 cancel_work_sync(&ifmgd->request_smps_work);
4401 cancel_work_sync(&ifmgd->csa_connection_drop_work);
4402 cancel_work_sync(&ifmgd->chswitch_work);
4403
8d61ffa5 4404 sdata_lock(sdata);
959867fa
JB		 4405 if (ifmgd->assoc_data) {
4406 struct cfg80211_bss *bss = ifmgd->assoc_data->bss;
54e4ffb2 4407 ieee80211_destroy_assoc_data(sdata, false);
959867fa
JB		 4408 cfg80211_assoc_timeout(sdata->dev, bss);
4409 }
54e4ffb2
JB		 4410 if (ifmgd->auth_data)
4411 ieee80211_destroy_auth_data(sdata, false);
4412 del_timer_sync(&ifmgd->timer);
8d61ffa5 4413 sdata_unlock(sdata);
54e4ffb2
JB		 4414}
4415
a97c13c3
JO		 4416void ieee80211_cqm_rssi_notify(struct ieee80211_vif *vif,
4417 enum nl80211_cqm_rssi_threshold_event rssi_event,
4418 gfp_t gfp)
4419{
4420 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
4421
b5878a2d
JB		 4422 trace_api_cqm_rssi_notify(sdata, rssi_event);
4423
a97c13c3
JO		 4424 cfg80211_cqm_rssi_notify(sdata->dev, rssi_event, gfp);
4425}
4426EXPORT_SYMBOL(ieee80211_cqm_rssi_notify);
Linux kernel - Deliverables
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