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cfg80211: fix management registrations deadlock
[linux-block.git] / net / mac80211 / mlme.c
CommitLineData
d2912cb1 1// SPDX-License-Identifier: GPL-2.0-only
f0706e82
JB		 2/*
3 * BSS client mode implementation
5394af4d 4 * Copyright 2003-2008, Jouni Malinen <j@w1.fi>
f0706e82
JB		 5 * Copyright 2004, Instant802 Networks, Inc.
6 * Copyright 2005, Devicescape Software, Inc.
7 * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
8 * Copyright 2007, Michael Wu <flamingice@sourmilk.net>
d98ad83e 9 * Copyright 2013-2014 Intel Mobile Communications GmbH
e38a017b 10 * Copyright (C) 2015 - 2017 Intel Deutschland GmbH
2bf973ff 11 * Copyright (C) 2018 - 2020 Intel Corporation
f0706e82
JB		 12 */
13
5b323edb 14#include <linux/delay.h>
5fdb3735 15#include <linux/fips.h>
f0706e82
JB		 16#include <linux/if_ether.h>
17#include <linux/skbuff.h>
f0706e82 18#include <linux/if_arp.h>
f0706e82 19#include <linux/etherdevice.h>
d9b93842 20#include <linux/moduleparam.h>
d0709a65 21#include <linux/rtnetlink.h>
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"
39404fee 32#include "fils_aead.h"
f0706e82 33
1672c0e3 34#define IEEE80211_AUTH_TIMEOUT (HZ / 5)
cb236d2d 35#define IEEE80211_AUTH_TIMEOUT_LONG (HZ / 2)
1672c0e3 36#define IEEE80211_AUTH_TIMEOUT_SHORT (HZ / 10)
407879b6 37#define IEEE80211_AUTH_TIMEOUT_SAE (HZ * 2)
1672c0e3
JB		 38#define IEEE80211_AUTH_MAX_TRIES 3
39#define IEEE80211_AUTH_WAIT_ASSOC (HZ * 5)
40#define IEEE80211_ASSOC_TIMEOUT (HZ / 5)
cb236d2d 41#define IEEE80211_ASSOC_TIMEOUT_LONG (HZ / 2)
1672c0e3
JB		 42#define IEEE80211_ASSOC_TIMEOUT_SHORT (HZ / 10)
43#define IEEE80211_ASSOC_MAX_TRIES 3
66e67e41 44
180205bd
BG		 45static int max_nullfunc_tries = 2;
46module_param(max_nullfunc_tries, int, 0644);
47MODULE_PARM_DESC(max_nullfunc_tries,
48 "Maximum nullfunc tx tries before disconnecting (reason 4).");
49
50static int max_probe_tries = 5;
51module_param(max_probe_tries, int, 0644);
52MODULE_PARM_DESC(max_probe_tries,
53 "Maximum probe tries before disconnecting (reason 4).");
b291ba11
JB		 54
55/*
7ccc8bd7
FF		 56 * Beacon loss timeout is calculated as N frames times the
57 * advertised beacon interval. This may need to be somewhat
58 * higher than what hardware might detect to account for
59 * delays in the host processing frames. But since we also
60 * probe on beacon miss before declaring the connection lost
61 * default to what we want.
b291ba11 62 */
59c1ec2b
BG		 63static int beacon_loss_count = 7;
64module_param(beacon_loss_count, int, 0644);
65MODULE_PARM_DESC(beacon_loss_count,
66 "Number of beacon intervals before we decide beacon was lost.");
7ccc8bd7 67
b291ba11
JB		 68/*
69 * Time the connection can be idle before we probe
70 * it to see if we can still talk to the AP.
71 */
d1c5091f 72#define IEEE80211_CONNECTION_IDLE_TIME (30 * HZ)
b291ba11
JB		 73/*
74 * Time we wait for a probe response after sending
75 * a probe request because of beacon loss or for
76 * checking the connection still works.
77 */
180205bd
BG		 78static int probe_wait_ms = 500;
79module_param(probe_wait_ms, int, 0644);
80MODULE_PARM_DESC(probe_wait_ms,
81 "Maximum time(ms) to wait for probe response"
82 " before disconnecting (reason 4).");
f0706e82 83
391a200a
JM		 84/*
85 * How many Beacon frames need to have been used in average signal strength
86 * before starting to indicate signal change events.
87 */
88#define IEEE80211_SIGNAL_AVE_MIN_COUNT 4
89
ca386f31
JB		 90/*
91 * We can have multiple work items (and connection probing)
92 * scheduling this timer, but we need to take care to only
93 * reschedule it when it should fire _earlier_ than it was
94 * asked for before, or if it's not pending right now. This
95 * function ensures that. Note that it then is required to
96 * run this function for all timeouts after the first one
97 * has happened -- the work that runs from this timer will
98 * do that.
99 */
8d61ffa5
JB		 100static void run_again(struct ieee80211_sub_if_data *sdata,
101 unsigned long timeout)
ca386f31 102{
8d61ffa5 103 sdata_assert_lock(sdata);
ca386f31 104
8d61ffa5
JB		 105 if (!timer_pending(&sdata->u.mgd.timer) ||
106 time_before(timeout, sdata->u.mgd.timer.expires))
107 mod_timer(&sdata->u.mgd.timer, timeout);
ca386f31
JB		 108}
109
d3a910a8 110void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata)
b291ba11 111{
c1288b12 112 if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER)
b291ba11
JB		 113 return;
114
30686bf7 115 if (ieee80211_hw_check(&sdata->local->hw, CONNECTION_MONITOR))
7eeff74c
JB		 116 return;
117
b291ba11 118 mod_timer(&sdata->u.mgd.bcn_mon_timer,
7ccc8bd7 119 round_jiffies_up(jiffies + sdata->u.mgd.beacon_timeout));
b291ba11
JB		 120}
121
be099e82
LR		 122void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata)
123{
0c699c3a
LR		 124 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
125
b100e5d6 126 if (unlikely(!ifmgd->associated))
8628172f
SG		 127 return;
128
b100e5d6
JB		 129 if (ifmgd->probe_send_count)
130 ifmgd->probe_send_count = 0;
448cd2e2 131
30686bf7 132 if (ieee80211_hw_check(&sdata->local->hw, CONNECTION_MONITOR))
be099e82
LR		 133 return;
134
b100e5d6 135 mod_timer(&ifmgd->conn_mon_timer,
be099e82
LR		 136 round_jiffies_up(jiffies + IEEE80211_CONNECTION_IDLE_TIME));
137}
138
5484e237 139static int ecw2cw(int ecw)
60f8b39c 140{
5484e237 141 return (1 << ecw) - 1;
60f8b39c
JB		 142}
143
6565ec9b
JB		 144static u32
145ieee80211_determine_chantype(struct ieee80211_sub_if_data *sdata,
146 struct ieee80211_supported_band *sband,
147 struct ieee80211_channel *channel,
2a333a0d 148 u32 vht_cap_info,
6565ec9b
JB		 149 const struct ieee80211_ht_operation *ht_oper,
150 const struct ieee80211_vht_operation *vht_oper,
41cbb0f5 151 const struct ieee80211_he_operation *he_oper,
5cdaed1e 152 struct cfg80211_chan_def *chandef, bool tracking)
6565ec9b 153{
5cdaed1e 154 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
6565ec9b 155 struct cfg80211_chan_def vht_chandef;
179b8fc7 156 struct ieee80211_sta_ht_cap sta_ht_cap;
6565ec9b
JB		 157 u32 ht_cfreq, ret;
158
2a38075c 159 memset(chandef, 0, sizeof(struct cfg80211_chan_def));
6565ec9b
JB		 160 chandef->chan = channel;
161 chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
162 chandef->center_freq1 = channel->center_freq;
b6011960 163 chandef->freq1_offset = channel->freq_offset;
6565ec9b 164
57fa5e85
JB		 165 if (channel->band == NL80211_BAND_6GHZ) {
166 if (!ieee80211_chandef_he_6ghz_oper(sdata, he_oper, chandef))
167 ret = IEEE80211_STA_DISABLE_HT |
168 IEEE80211_STA_DISABLE_VHT |
169 IEEE80211_STA_DISABLE_HE;
170 vht_chandef = *chandef;
171 goto out;
172 }
173
174 memcpy(&sta_ht_cap, &sband->ht_cap, sizeof(sta_ht_cap));
175 ieee80211_apply_htcap_overrides(sdata, &sta_ht_cap);
176
b1b1ae2c 177 if (!ht_oper || !sta_ht_cap.ht_supported) {
75e296e9
JB		 178 ret = IEEE80211_STA_DISABLE_HT |
179 IEEE80211_STA_DISABLE_VHT |
180 IEEE80211_STA_DISABLE_HE;
6565ec9b
JB		 181 goto out;
182 }
183
184 chandef->width = NL80211_CHAN_WIDTH_20;
185
186 ht_cfreq = ieee80211_channel_to_frequency(ht_oper->primary_chan,
187 channel->band);
188 /* check that channel matches the right operating channel */
5cdaed1e 189 if (!tracking && channel->center_freq != ht_cfreq) {
6565ec9b
JB		 190 /*
191 * It's possible that some APs are confused here;
192 * Netgear WNDR3700 sometimes reports 4 higher than
193 * the actual channel in association responses, but
194 * since we look at probe response/beacon data here
195 * it should be OK.
196 */
5cdaed1e
JB		 197 sdata_info(sdata,
198 "Wrong control channel: center-freq: %d ht-cfreq: %d ht->primary_chan: %d band: %d - Disabling HT\n",
199 channel->center_freq, ht_cfreq,
200 ht_oper->primary_chan, channel->band);
75e296e9
JB		 201 ret = IEEE80211_STA_DISABLE_HT |
202 IEEE80211_STA_DISABLE_VHT |
203 IEEE80211_STA_DISABLE_HE;
6565ec9b
JB		 204 goto out;
205 }
206
207 /* check 40 MHz support, if we have it */
179b8fc7 208 if (sta_ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40) {
8ac3c704 209 ieee80211_chandef_ht_oper(ht_oper, chandef);
6565ec9b
JB		 210 } else {
211 /* 40 MHz (and 80 MHz) must be supported for VHT */
212 ret = IEEE80211_STA_DISABLE_VHT;
85220d71
JB		 213 /* also mark 40 MHz disabled */
214 ret |= IEEE80211_STA_DISABLE_40MHZ;
6565ec9b
JB		 215 goto out;
216 }
217
218 if (!vht_oper || !sband->vht_cap.vht_supported) {
219 ret = IEEE80211_STA_DISABLE_VHT;
220 goto out;
221 }
222
8ac3c704 223 vht_chandef = *chandef;
41cbb0f5
LC		 224 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HE) && he_oper &&
225 (le32_to_cpu(he_oper->he_oper_params) &
226 IEEE80211_HE_OPERATION_VHT_OPER_INFO)) {
227 struct ieee80211_vht_operation he_oper_vht_cap;
228
229 /*
230 * Set only first 3 bytes (other 2 aren't used in
231 * ieee80211_chandef_vht_oper() anyway)
232 */
233 memcpy(&he_oper_vht_cap, he_oper->optional, 3);
234 he_oper_vht_cap.basic_mcs_set = cpu_to_le16(0);
235
2a333a0d 236 if (!ieee80211_chandef_vht_oper(&sdata->local->hw, vht_cap_info,
7eb26df2 237 &he_oper_vht_cap, ht_oper,
41cbb0f5
LC		 238 &vht_chandef)) {
239 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HE))
240 sdata_info(sdata,
241 "HE AP VHT information is invalid, disable HE\n");
242 ret = IEEE80211_STA_DISABLE_HE;
243 goto out;
244 }
2a333a0d
JB		 245 } else if (!ieee80211_chandef_vht_oper(&sdata->local->hw,
246 vht_cap_info,
247 vht_oper, ht_oper,
248 &vht_chandef)) {
5cdaed1e 249 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
30eb1dc2 250 sdata_info(sdata,
8ac3c704 251 "AP VHT information is invalid, disable VHT\n");
6565ec9b
JB		 252 ret = IEEE80211_STA_DISABLE_VHT;
253 goto out;
254 }
255
256 if (!cfg80211_chandef_valid(&vht_chandef)) {
5cdaed1e 257 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
30eb1dc2
JB		 258 sdata_info(sdata,
259 "AP VHT information is invalid, disable VHT\n");
6565ec9b
JB		 260 ret = IEEE80211_STA_DISABLE_VHT;
261 goto out;
262 }
263
264 if (cfg80211_chandef_identical(chandef, &vht_chandef)) {
265 ret = 0;
266 goto out;
267 }
268
269 if (!cfg80211_chandef_compatible(chandef, &vht_chandef)) {
5cdaed1e 270 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
30eb1dc2
JB		 271 sdata_info(sdata,
272 "AP VHT information doesn't match HT, disable VHT\n");
6565ec9b
JB		 273 ret = IEEE80211_STA_DISABLE_VHT;
274 goto out;
275 }
276
277 *chandef = vht_chandef;
278
279 ret = 0;
280
281out:
963a1852
JB		 282 /*
283 * When tracking the current AP, don't do any further checks if the
284 * new chandef is identical to the one we're currently using for the
285 * connection. This keeps us from playing ping-pong with regulatory,
286 * without it the following can happen (for example):
287 * - connect to an AP with 80 MHz, world regdom allows 80 MHz
288 * - AP advertises regdom US
289 * - CRDA loads regdom US with 80 MHz prohibited (old database)
290 * - the code below detects an unsupported channel, downgrades, and
291 * we disconnect from the AP in the caller
292 * - disconnect causes CRDA to reload world regdomain and the game
293 * starts anew.
294 * (see https://bugzilla.kernel.org/show_bug.cgi?id=70881)
295 *
296 * It seems possible that there are still scenarios with CSA or real
297 * bandwidth changes where a this could happen, but those cases are
298 * less common and wouldn't completely prevent using the AP.
299 */
300 if (tracking &&
301 cfg80211_chandef_identical(chandef, &sdata->vif.bss_conf.chandef))
302 return ret;
303
586e01ed
JB		 304 /* don't print the message below for VHT mismatch if VHT is disabled */
305 if (ret & IEEE80211_STA_DISABLE_VHT)
306 vht_chandef = *chandef;
307
ddfe49b4
JB		 308 /*
309 * Ignore the DISABLED flag when we're already connected and only
310 * tracking the APs beacon for bandwidth changes - otherwise we
311 * might get disconnected here if we connect to an AP, update our
312 * regulatory information based on the AP's country IE and the
313 * information we have is wrong/outdated and disables the channel
314 * that we're actually using for the connection to the AP.
315 */
6565ec9b 316 while (!cfg80211_chandef_usable(sdata->local->hw.wiphy, chandef,
ddfe49b4
JB		 317 tracking ? 0 :
318 IEEE80211_CHAN_DISABLED)) {
6565ec9b
JB		 319 if (WARN_ON(chandef->width == NL80211_CHAN_WIDTH_20_NOHT)) {
320 ret = IEEE80211_STA_DISABLE_HT |
75e296e9
JB		 321 IEEE80211_STA_DISABLE_VHT |
322 IEEE80211_STA_DISABLE_HE;
b56e4b85 323 break;
6565ec9b
JB		 324 }
325
e6b7cde4 326 ret |= ieee80211_chandef_downgrade(chandef);
6565ec9b
JB		 327 }
328
8cadb207
DG		 329 if (!he_oper || !cfg80211_chandef_usable(sdata->wdev.wiphy, chandef,
330 IEEE80211_CHAN_NO_HE))
b5db1aca
HD		 331 ret |= IEEE80211_STA_DISABLE_HE;
332
5cdaed1e 333 if (chandef->width != vht_chandef.width && !tracking)
6565ec9b
JB		 334 sdata_info(sdata,
335 "capabilities/regulatory prevented using AP HT/VHT configuration, downgraded\n");
336
337 WARN_ON_ONCE(!cfg80211_chandef_valid(chandef));
338 return ret;
339}
340
30eb1dc2
JB		 341static int ieee80211_config_bw(struct ieee80211_sub_if_data *sdata,
342 struct sta_info *sta,
53b954ee 343 const struct ieee80211_ht_cap *ht_cap,
2a333a0d 344 const struct ieee80211_vht_cap *vht_cap,
30eb1dc2
JB		 345 const struct ieee80211_ht_operation *ht_oper,
346 const struct ieee80211_vht_operation *vht_oper,
41cbb0f5 347 const struct ieee80211_he_operation *he_oper,
30eb1dc2 348 const u8 *bssid, u32 *changed)
d5522e03
JB		 349{
350 struct ieee80211_local *local = sdata->local;
30eb1dc2 351 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
41cbb0f5
LC		 352 struct ieee80211_channel *chan = sdata->vif.bss_conf.chandef.chan;
353 struct ieee80211_supported_band *sband =
354 local->hw.wiphy->bands[chan->band];
30eb1dc2 355 struct cfg80211_chan_def chandef;
9ed6bcce 356 u16 ht_opmode;
30eb1dc2
JB		 357 u32 flags;
358 enum ieee80211_sta_rx_bandwidth new_sta_bw;
2a333a0d 359 u32 vht_cap_info = 0;
30eb1dc2 360 int ret;
d5522e03 361
30eb1dc2
JB		 362 /* if HT was/is disabled, don't track any bandwidth changes */
363 if (ifmgd->flags & IEEE80211_STA_DISABLE_HT || !ht_oper)
1128958d
JB		 364 return 0;
365
30eb1dc2
JB		 366 /* don't check VHT if we associated as non-VHT station */
367 if (ifmgd->flags & IEEE80211_STA_DISABLE_VHT)
368 vht_oper = NULL;
369
41cbb0f5
LC		 370 /* don't check HE if we associated as non-HE station */
371 if (ifmgd->flags & IEEE80211_STA_DISABLE_HE ||
372 !ieee80211_get_he_sta_cap(sband))
373 he_oper = NULL;
374
30eb1dc2
JB		 375 if (WARN_ON_ONCE(!sta))
376 return -EINVAL;
377
017b45bb
AA		 378 /*
379 * if bss configuration changed store the new one -
380 * this may be applicable even if channel is identical
381 */
382 ht_opmode = le16_to_cpu(ht_oper->operation_mode);
383 if (sdata->vif.bss_conf.ht_operation_mode != ht_opmode) {
384 *changed |= BSS_CHANGED_HT;
385 sdata->vif.bss_conf.ht_operation_mode = ht_opmode;
386 }
387
2a333a0d
JB		 388 if (vht_cap)
389 vht_cap_info = le32_to_cpu(vht_cap->vht_cap_info);
390
41cbb0f5 391 /* calculate new channel (type) based on HT/VHT/HE operation IEs */
2a333a0d 392 flags = ieee80211_determine_chantype(sdata, sband, chan, vht_cap_info,
41cbb0f5 393 ht_oper, vht_oper, he_oper,
53b954ee 394 &chandef, true);
30eb1dc2
JB		 395
396 /*
397 * Downgrade the new channel if we associated with restricted
398 * capabilities. For example, if we associated as a 20 MHz STA
399 * to a 40 MHz AP (due to regulatory, capabilities or config
400 * reasons) then switching to a 40 MHz channel now won't do us
401 * any good -- we couldn't use it with the AP.
402 */
403 if (ifmgd->flags & IEEE80211_STA_DISABLE_80P80MHZ &&
404 chandef.width == NL80211_CHAN_WIDTH_80P80)
e6b7cde4 405 flags |= ieee80211_chandef_downgrade(&chandef);
30eb1dc2
JB		 406 if (ifmgd->flags & IEEE80211_STA_DISABLE_160MHZ &&
407 chandef.width == NL80211_CHAN_WIDTH_160)
e6b7cde4 408 flags |= ieee80211_chandef_downgrade(&chandef);
30eb1dc2
JB		 409 if (ifmgd->flags & IEEE80211_STA_DISABLE_40MHZ &&
410 chandef.width > NL80211_CHAN_WIDTH_20)
e6b7cde4 411 flags |= ieee80211_chandef_downgrade(&chandef);
30eb1dc2
JB		 412
413 if (cfg80211_chandef_identical(&chandef, &sdata->vif.bss_conf.chandef))
414 return 0;
415
416 sdata_info(sdata,
b6011960
TP		 417 "AP %pM changed bandwidth, new config is %d.%03d MHz, "
418 "width %d (%d.%03d/%d MHz)\n",
419 ifmgd->bssid, chandef.chan->center_freq,
420 chandef.chan->freq_offset, chandef.width,
421 chandef.center_freq1, chandef.freq1_offset,
422 chandef.center_freq2);
30eb1dc2
JB		 423
424 if (flags != (ifmgd->flags & (IEEE80211_STA_DISABLE_HT |
425 IEEE80211_STA_DISABLE_VHT |
75e296e9 426 IEEE80211_STA_DISABLE_HE |
30eb1dc2
JB		 427 IEEE80211_STA_DISABLE_40MHZ |
428 IEEE80211_STA_DISABLE_80P80MHZ |
429 IEEE80211_STA_DISABLE_160MHZ)) ||
430 !cfg80211_chandef_valid(&chandef)) {
431 sdata_info(sdata,
432 "AP %pM changed bandwidth in a way we can't support - disconnect\n",
433 ifmgd->bssid);
434 return -EINVAL;
435 }
436
437 switch (chandef.width) {
438 case NL80211_CHAN_WIDTH_20_NOHT:
439 case NL80211_CHAN_WIDTH_20:
440 new_sta_bw = IEEE80211_STA_RX_BW_20;
441 break;
4bf88530 442 case NL80211_CHAN_WIDTH_40:
30eb1dc2 443 new_sta_bw = IEEE80211_STA_RX_BW_40;
64f68e5d 444 break;
30eb1dc2
JB		 445 case NL80211_CHAN_WIDTH_80:
446 new_sta_bw = IEEE80211_STA_RX_BW_80;
447 break;
448 case NL80211_CHAN_WIDTH_80P80:
449 case NL80211_CHAN_WIDTH_160:
450 new_sta_bw = IEEE80211_STA_RX_BW_160;
64f68e5d 451 break;
30eb1dc2
JB		 452 default:
453 return -EINVAL;
64f68e5d 454 }
d5522e03 455
30eb1dc2
JB		 456 if (new_sta_bw > sta->cur_max_bandwidth)
457 new_sta_bw = sta->cur_max_bandwidth;
64f68e5d 458
30eb1dc2
JB		 459 if (new_sta_bw < sta->sta.bandwidth) {
460 sta->sta.bandwidth = new_sta_bw;
461 rate_control_rate_update(local, sband, sta,
462 IEEE80211_RC_BW_CHANGED);
463 }
64f68e5d 464
30eb1dc2
JB		 465 ret = ieee80211_vif_change_bandwidth(sdata, &chandef, changed);
466 if (ret) {
467 sdata_info(sdata,
468 "AP %pM changed bandwidth to incompatible one - disconnect\n",
469 ifmgd->bssid);
470 return ret;
471 }
7cc44ed4 472
30eb1dc2
JB		 473 if (new_sta_bw > sta->sta.bandwidth) {
474 sta->sta.bandwidth = new_sta_bw;
475 rate_control_rate_update(local, sband, sta,
476 IEEE80211_RC_BW_CHANGED);
0aaffa9b 477 }
d5522e03 478
30eb1dc2 479 return 0;
d5522e03
JB		 480}
481
9c6bd790
JB		 482/* frame sending functions */
483
66e67e41 484static void ieee80211_add_ht_ie(struct ieee80211_sub_if_data *sdata,
9dde6423 485 struct sk_buff *skb, u8 ap_ht_param,
66e67e41
JB		 486 struct ieee80211_supported_band *sband,
487 struct ieee80211_channel *channel,
488 enum ieee80211_smps_mode smps)
489{
66e67e41
JB		 490 u8 *pos;
491 u32 flags = channel->flags;
492 u16 cap;
493 struct ieee80211_sta_ht_cap ht_cap;
494
495 BUILD_BUG_ON(sizeof(ht_cap) != sizeof(sband->ht_cap));
496
66e67e41
JB		 497 memcpy(&ht_cap, &sband->ht_cap, sizeof(ht_cap));
498 ieee80211_apply_htcap_overrides(sdata, &ht_cap);
499
66e67e41
JB		 500 /* determine capability flags */
501 cap = ht_cap.cap;
502
9dde6423 503 switch (ap_ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) {
66e67e41
JB		 504 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
505 if (flags & IEEE80211_CHAN_NO_HT40PLUS) {
506 cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
507 cap &= ~IEEE80211_HT_CAP_SGI_40;
508 }
509 break;
510 case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
511 if (flags & IEEE80211_CHAN_NO_HT40MINUS) {
512 cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
513 cap &= ~IEEE80211_HT_CAP_SGI_40;
514 }
515 break;
516 }
517
24398e39
JB		 518 /*
519 * If 40 MHz was disabled associate as though we weren't
520 * capable of 40 MHz -- some broken APs will never fall
521 * back to trying to transmit in 20 MHz.
522 */
523 if (sdata->u.mgd.flags & IEEE80211_STA_DISABLE_40MHZ) {
524 cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
525 cap &= ~IEEE80211_HT_CAP_SGI_40;
526 }
527
66e67e41
JB		 528 /* set SM PS mode properly */
529 cap &= ~IEEE80211_HT_CAP_SM_PS;
530 switch (smps) {
531 case IEEE80211_SMPS_AUTOMATIC:
532 case IEEE80211_SMPS_NUM_MODES:
533 WARN_ON(1);
02049ce2 534 /* fall through */
66e67e41
JB		 535 case IEEE80211_SMPS_OFF:
536 cap |= WLAN_HT_CAP_SM_PS_DISABLED <<
537 IEEE80211_HT_CAP_SM_PS_SHIFT;
538 break;
539 case IEEE80211_SMPS_STATIC:
540 cap |= WLAN_HT_CAP_SM_PS_STATIC <<
541 IEEE80211_HT_CAP_SM_PS_SHIFT;
542 break;
543 case IEEE80211_SMPS_DYNAMIC:
544 cap |= WLAN_HT_CAP_SM_PS_DYNAMIC <<
545 IEEE80211_HT_CAP_SM_PS_SHIFT;
546 break;
547 }
548
549 /* reserve and fill IE */
550 pos = skb_put(skb, sizeof(struct ieee80211_ht_cap) + 2);
551 ieee80211_ie_build_ht_cap(pos, &ht_cap, cap);
552}
553
322cd406
SS		 554/* This function determines vht capability flags for the association
555 * and builds the IE.
556 * Note - the function may set the owner of the MU-MIMO capability
557 */
d545daba
MP		 558static void ieee80211_add_vht_ie(struct ieee80211_sub_if_data *sdata,
559 struct sk_buff *skb,
b08fbbd8
JB		 560 struct ieee80211_supported_band *sband,
561 struct ieee80211_vht_cap *ap_vht_cap)
d545daba 562{
322cd406 563 struct ieee80211_local *local = sdata->local;
d545daba
MP		 564 u8 *pos;
565 u32 cap;
566 struct ieee80211_sta_vht_cap vht_cap;
c1cf6d4e 567 u32 mask, ap_bf_sts, our_bf_sts;
d545daba
MP		 568
569 BUILD_BUG_ON(sizeof(vht_cap) != sizeof(sband->vht_cap));
570
571 memcpy(&vht_cap, &sband->vht_cap, sizeof(vht_cap));
dd5ecfea 572 ieee80211_apply_vhtcap_overrides(sdata, &vht_cap);
d545daba
MP		 573
574 /* determine capability flags */
575 cap = vht_cap.cap;
576
f2d9d270 577 if (sdata->u.mgd.flags & IEEE80211_STA_DISABLE_80P80MHZ) {
575f0530
JB		 578 u32 bw = cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK;
579
580 cap &= ~IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK;
581 if (bw == IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ ||
582 bw == IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ)
583 cap |= IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ;
f2d9d270
JB		 584 }
585
586 if (sdata->u.mgd.flags & IEEE80211_STA_DISABLE_160MHZ) {
587 cap &= ~IEEE80211_VHT_CAP_SHORT_GI_160;
575f0530 588 cap &= ~IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK;
f2d9d270
JB		 589 }
590
b08fbbd8
JB		 591 /*
592 * Some APs apparently get confused if our capabilities are better
593 * than theirs, so restrict what we advertise in the assoc request.
594 */
595 if (!(ap_vht_cap->vht_cap_info &
596 cpu_to_le32(IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE)))
322cd406
SS		 597 cap &= ~(IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE |
598 IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE);
599 else if (!(ap_vht_cap->vht_cap_info &
600 cpu_to_le32(IEEE80211_VHT_CAP_MU_BEAMFORMER_CAPABLE)))
601 cap &= ~IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE;
602
603 /*
604 * If some other vif is using the MU-MIMO capablity we cannot associate
605 * using MU-MIMO - this will lead to contradictions in the group-id
606 * mechanism.
607 * Ownership is defined since association request, in order to avoid
608 * simultaneous associations with MU-MIMO.
609 */
610 if (cap & IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE) {
611 bool disable_mu_mimo = false;
612 struct ieee80211_sub_if_data *other;
613
614 list_for_each_entry_rcu(other, &local->interfaces, list) {
b5a33d52 615 if (other->vif.mu_mimo_owner) {
322cd406
SS		 616 disable_mu_mimo = true;
617 break;
618 }
619 }
620 if (disable_mu_mimo)
621 cap &= ~IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE;
622 else
b5a33d52 623 sdata->vif.mu_mimo_owner = true;
322cd406 624 }
b08fbbd8 625
c1cf6d4e
ES		 626 mask = IEEE80211_VHT_CAP_BEAMFORMEE_STS_MASK;
627
628 ap_bf_sts = le32_to_cpu(ap_vht_cap->vht_cap_info) & mask;
629 our_bf_sts = cap & mask;
630
631 if (ap_bf_sts < our_bf_sts) {
632 cap &= ~mask;
633 cap |= ap_bf_sts;
634 }
635
d545daba 636 /* reserve and fill IE */
d4950281 637 pos = skb_put(skb, sizeof(struct ieee80211_vht_cap) + 2);
d545daba
MP		 638 ieee80211_ie_build_vht_cap(pos, &vht_cap, cap);
639}
640
41cbb0f5
LC		 641/* This function determines HE capability flags for the association
642 * and builds the IE.
643 */
644static void ieee80211_add_he_ie(struct ieee80211_sub_if_data *sdata,
645 struct sk_buff *skb,
646 struct ieee80211_supported_band *sband)
647{
648 u8 *pos;
649 const struct ieee80211_sta_he_cap *he_cap = NULL;
b5db1aca 650 struct ieee80211_chanctx_conf *chanctx_conf;
41cbb0f5 651 u8 he_cap_size;
b5db1aca
HD		 652 bool reg_cap = false;
653
654 rcu_read_lock();
655 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
656 if (!WARN_ON_ONCE(!chanctx_conf))
657 reg_cap = cfg80211_chandef_usable(sdata->wdev.wiphy,
658 &chanctx_conf->def,
659 IEEE80211_CHAN_NO_HE);
660
661 rcu_read_unlock();
41cbb0f5
LC		 662
663 he_cap = ieee80211_get_he_sta_cap(sband);
b5db1aca 664 if (!he_cap || !reg_cap)
41cbb0f5
LC		 665 return;
666
667 /*
668 * TODO: the 1 added is because this temporarily is under the EXTENSION
669 * IE. Get rid of it when it moves.
670 */
671 he_cap_size =
672 2 + 1 + sizeof(he_cap->he_cap_elem) +
673 ieee80211_he_mcs_nss_size(&he_cap->he_cap_elem) +
674 ieee80211_he_ppe_size(he_cap->ppe_thres[0],
675 he_cap->he_cap_elem.phy_cap_info);
676 pos = skb_put(skb, he_cap_size);
677 ieee80211_ie_build_he_cap(pos, he_cap, pos + he_cap_size);
24a2042c
RM		 678
679 ieee80211_ie_build_he_6ghz_cap(sdata, skb);
41cbb0f5
LC		 680}
681
66e67e41
JB		 682static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata)
683{
684 struct ieee80211_local *local = sdata->local;
685 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
686 struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data;
687 struct sk_buff *skb;
688 struct ieee80211_mgmt *mgmt;
4d9ec73d 689 u8 *pos, qos_info, *ie_start;
66e67e41 690 size_t offset = 0, noffset;
2103dec1 691 int i, count, rates_len, supp_rates_len, shift;
66e67e41
JB		 692 u16 capab;
693 struct ieee80211_supported_band *sband;
55de908a
JB		 694 struct ieee80211_chanctx_conf *chanctx_conf;
695 struct ieee80211_channel *chan;
44f6d42c 696 u32 rates = 0;
2ff69b0e
JB		 697 struct element *ext_capa = NULL;
698
699 /* we know it's writable, cast away the const */
700 if (assoc_data->ie_len)
701 ext_capa = (void *)cfg80211_find_elem(WLAN_EID_EXT_CAPABILITY,
702 assoc_data->ie,
703 assoc_data->ie_len);
66e67e41 704
8d61ffa5 705 sdata_assert_lock(sdata);
66e67e41 706
55de908a
JB		 707 rcu_read_lock();
708 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
709 if (WARN_ON(!chanctx_conf)) {
710 rcu_read_unlock();
711 return;
712 }
4bf88530 713 chan = chanctx_conf->def.chan;
55de908a
JB		 714 rcu_read_unlock();
715 sband = local->hw.wiphy->bands[chan->band];
2103dec1 716 shift = ieee80211_vif_get_shift(&sdata->vif);
66e67e41
JB		 717
718 if (assoc_data->supp_rates_len) {
719 /*
720 * Get all rates supported by the device and the AP as
721 * some APs don't like getting a superset of their rates
722 * in the association request (e.g. D-Link DAP 1353 in
723 * b-only mode)...
724 */
2103dec1
SW		 725 rates_len = ieee80211_parse_bitrates(&chanctx_conf->def, sband,
726 assoc_data->supp_rates,
727 assoc_data->supp_rates_len,
728 &rates);
66e67e41
JB		 729 } else {
730 /*
731 * In case AP not provide any supported rates information
732 * before association, we send information element(s) with
733 * all rates that we support.
734 */
2103dec1
SW		 735 rates_len = 0;
736 for (i = 0; i < sband->n_bitrates; i++) {
2103dec1
SW		 737 rates |= BIT(i);
738 rates_len++;
739 }
66e67e41
JB		 740 }
741
742 skb = alloc_skb(local->hw.extra_tx_headroom +
743 sizeof(*mgmt) + /* bit too much but doesn't matter */
744 2 + assoc_data->ssid_len + /* SSID */
745 4 + rates_len + /* (extended) rates */
746 4 + /* power capability */
747 2 + 2 * sband->n_channels + /* supported channels */
748 2 + sizeof(struct ieee80211_ht_cap) + /* HT */
d4950281 749 2 + sizeof(struct ieee80211_vht_cap) + /* VHT */
41cbb0f5
LC		 750 2 + 1 + sizeof(struct ieee80211_he_cap_elem) + /* HE */
751 sizeof(struct ieee80211_he_mcs_nss_supp) +
752 IEEE80211_HE_PPE_THRES_MAX_LEN +
24a2042c 753 2 + 1 + sizeof(struct ieee80211_he_6ghz_capa) +
66e67e41 754 assoc_data->ie_len + /* extra IEs */
39404fee 755 (assoc_data->fils_kek_len ? 16 /* AES-SIV */ : 0) +
66e67e41
JB		 756 9, /* WMM */
757 GFP_KERNEL);
758 if (!skb)
759 return;
760
761 skb_reserve(skb, local->hw.extra_tx_headroom);
762
763 capab = WLAN_CAPABILITY_ESS;
764
57fbcce3 765 if (sband->band == NL80211_BAND_2GHZ) {
ea1b2b45
JB		 766 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
767 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
66e67e41
JB		 768 }
769
770 if (assoc_data->capability & WLAN_CAPABILITY_PRIVACY)
771 capab |= WLAN_CAPABILITY_PRIVACY;
772
773 if ((assoc_data->capability & WLAN_CAPABILITY_SPECTRUM_MGMT) &&
30686bf7 774 ieee80211_hw_check(&local->hw, SPECTRUM_MGMT))
66e67e41
JB		 775 capab |= WLAN_CAPABILITY_SPECTRUM_MGMT;
776
cd2f5dd7
AK		 777 if (ifmgd->flags & IEEE80211_STA_ENABLE_RRM)
778 capab |= WLAN_CAPABILITY_RADIO_MEASURE;
779
b080db58 780 mgmt = skb_put_zero(skb, 24);
66e67e41
JB		 781 memcpy(mgmt->da, assoc_data->bss->bssid, ETH_ALEN);
782 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
783 memcpy(mgmt->bssid, assoc_data->bss->bssid, ETH_ALEN);
784
785 if (!is_zero_ether_addr(assoc_data->prev_bssid)) {
786 skb_put(skb, 10);
787 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
788 IEEE80211_STYPE_REASSOC_REQ);
789 mgmt->u.reassoc_req.capab_info = cpu_to_le16(capab);
790 mgmt->u.reassoc_req.listen_interval =
791 cpu_to_le16(local->hw.conf.listen_interval);
792 memcpy(mgmt->u.reassoc_req.current_ap, assoc_data->prev_bssid,
793 ETH_ALEN);
794 } else {
795 skb_put(skb, 4);
796 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
797 IEEE80211_STYPE_ASSOC_REQ);
798 mgmt->u.assoc_req.capab_info = cpu_to_le16(capab);
799 mgmt->u.assoc_req.listen_interval =
800 cpu_to_le16(local->hw.conf.listen_interval);
801 }
802
803 /* SSID */
804 pos = skb_put(skb, 2 + assoc_data->ssid_len);
4d9ec73d 805 ie_start = pos;
66e67e41
JB		 806 *pos++ = WLAN_EID_SSID;
807 *pos++ = assoc_data->ssid_len;
808 memcpy(pos, assoc_data->ssid, assoc_data->ssid_len);
809
810 /* add all rates which were marked to be used above */
811 supp_rates_len = rates_len;
812 if (supp_rates_len > 8)
813 supp_rates_len = 8;
814
815 pos = skb_put(skb, supp_rates_len + 2);
816 *pos++ = WLAN_EID_SUPP_RATES;
817 *pos++ = supp_rates_len;
818
819 count = 0;
820 for (i = 0; i < sband->n_bitrates; i++) {
821 if (BIT(i) & rates) {
2103dec1
SW		 822 int rate = DIV_ROUND_UP(sband->bitrates[i].bitrate,
823 5 * (1 << shift));
824 *pos++ = (u8) rate;
66e67e41
JB		 825 if (++count == 8)
826 break;
827 }
828 }
829
830 if (rates_len > count) {
831 pos = skb_put(skb, rates_len - count + 2);
832 *pos++ = WLAN_EID_EXT_SUPP_RATES;
833 *pos++ = rates_len - count;
834
835 for (i++; i < sband->n_bitrates; i++) {
836 if (BIT(i) & rates) {
2103dec1
SW		 837 int rate;
838 rate = DIV_ROUND_UP(sband->bitrates[i].bitrate,
839 5 * (1 << shift));
840 *pos++ = (u8) rate;
66e67e41
JB		 841 }
842 }
843 }
844
cd2f5dd7
AK		 845 if (capab & WLAN_CAPABILITY_SPECTRUM_MGMT ||
846 capab & WLAN_CAPABILITY_RADIO_MEASURE) {
66e67e41
JB		 847 pos = skb_put(skb, 4);
848 *pos++ = WLAN_EID_PWR_CAPABILITY;
849 *pos++ = 2;
850 *pos++ = 0; /* min tx power */
0430c883
SW		 851 /* max tx power */
852 *pos++ = ieee80211_chandef_max_power(&chanctx_conf->def);
cd2f5dd7 853 }
66e67e41 854
2ff69b0e
JB		 855 /*
856 * Per spec, we shouldn't include the list of channels if we advertise
857 * support for extended channel switching, but we've always done that;
858 * (for now?) apply this restriction only on the (new) 6 GHz band.
859 */
860 if (capab & WLAN_CAPABILITY_SPECTRUM_MGMT &&
861 (sband->band != NL80211_BAND_6GHZ ||
862 !ext_capa || ext_capa->datalen < 1 ||
863 !(ext_capa->data[0] & WLAN_EXT_CAPA1_EXT_CHANNEL_SWITCHING))) {
66e67e41
JB		 864 /* TODO: get this in reg domain format */
865 pos = skb_put(skb, 2 * sband->n_channels + 2);
866 *pos++ = WLAN_EID_SUPPORTED_CHANNELS;
867 *pos++ = 2 * sband->n_channels;
868 for (i = 0; i < sband->n_channels; i++) {
869 *pos++ = ieee80211_frequency_to_channel(
870 sband->channels[i].center_freq);
871 *pos++ = 1; /* one channel in the subband*/
872 }
873 }
874
caf56338
SS		 875 /* Set MBSSID support for HE AP if needed */
876 if (ieee80211_hw_check(&local->hw, SUPPORTS_ONLY_HE_MULTI_BSSID) &&
2ff69b0e
JB		 877 !(ifmgd->flags & IEEE80211_STA_DISABLE_HE) && assoc_data->ie_len &&
878 ext_capa && ext_capa->datalen >= 3)
879 ext_capa->data[2] |= WLAN_EXT_CAPA3_MULTI_BSSID_SUPPORT;
caf56338 880
66e67e41 881 /* if present, add any custom IEs that go before HT */
b3f51e94 882 if (assoc_data->ie_len) {
66e67e41
JB		 883 static const u8 before_ht[] = {
884 WLAN_EID_SSID,
885 WLAN_EID_SUPP_RATES,
886 WLAN_EID_EXT_SUPP_RATES,
887 WLAN_EID_PWR_CAPABILITY,
888 WLAN_EID_SUPPORTED_CHANNELS,
889 WLAN_EID_RSN,
890 WLAN_EID_QOS_CAPA,
891 WLAN_EID_RRM_ENABLED_CAPABILITIES,
892 WLAN_EID_MOBILITY_DOMAIN,
8ed28747
JB		 893 WLAN_EID_FAST_BSS_TRANSITION, /* reassoc only */
894 WLAN_EID_RIC_DATA, /* reassoc only */
66e67e41
JB		 895 WLAN_EID_SUPPORTED_REGULATORY_CLASSES,
896 };
8ed28747
JB		 897 static const u8 after_ric[] = {
898 WLAN_EID_SUPPORTED_REGULATORY_CLASSES,
899 WLAN_EID_HT_CAPABILITY,
900 WLAN_EID_BSS_COEX_2040,
a7f26d80 901 /* luckily this is almost always there */
8ed28747
JB		 902 WLAN_EID_EXT_CAPABILITY,
903 WLAN_EID_QOS_TRAFFIC_CAPA,
904 WLAN_EID_TIM_BCAST_REQ,
905 WLAN_EID_INTERWORKING,
a7f26d80 906 /* 60 GHz (Multi-band, DMG, MMS) can't happen */
8ed28747
JB		 907 WLAN_EID_VHT_CAPABILITY,
908 WLAN_EID_OPMODE_NOTIF,
909 };
910
911 noffset = ieee80211_ie_split_ric(assoc_data->ie,
912 assoc_data->ie_len,
913 before_ht,
914 ARRAY_SIZE(before_ht),
915 after_ric,
916 ARRAY_SIZE(after_ric),
917 offset);
b952f4df 918 skb_put_data(skb, assoc_data->ie + offset, noffset - offset);
66e67e41
JB		 919 offset = noffset;
920 }
921
f2d9d270
JB		 922 if (WARN_ON_ONCE((ifmgd->flags & IEEE80211_STA_DISABLE_HT) &&
923 !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)))
924 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
925
57fa5e85
JB		 926 if (sband->band != NL80211_BAND_6GHZ &&
927 !(ifmgd->flags & IEEE80211_STA_DISABLE_HT))
9dde6423 928 ieee80211_add_ht_ie(sdata, skb, assoc_data->ap_ht_param,
04ecd257 929 sband, chan, sdata->smps_mode);
66e67e41 930
3de3802c
JB		 931 /* if present, add any custom IEs that go before VHT */
932 if (assoc_data->ie_len) {
933 static const u8 before_vht[] = {
a7f26d80
JB		 934 /*
935 * no need to list the ones split off before HT
936 * or generated here
937 */
3de3802c
JB		 938 WLAN_EID_BSS_COEX_2040,
939 WLAN_EID_EXT_CAPABILITY,
940 WLAN_EID_QOS_TRAFFIC_CAPA,
941 WLAN_EID_TIM_BCAST_REQ,
942 WLAN_EID_INTERWORKING,
a7f26d80 943 /* 60 GHz (Multi-band, DMG, MMS) can't happen */
3de3802c 944 };
8ed28747
JB		 945
946 /* RIC already taken above, so no need to handle here anymore */
3de3802c
JB		 947 noffset = ieee80211_ie_split(assoc_data->ie, assoc_data->ie_len,
948 before_vht, ARRAY_SIZE(before_vht),
949 offset);
b952f4df 950 skb_put_data(skb, assoc_data->ie + offset, noffset - offset);
3de3802c
JB		 951 offset = noffset;
952 }
953
41cbb0f5
LC		 954 /* if present, add any custom IEs that go before HE */
955 if (assoc_data->ie_len) {
956 static const u8 before_he[] = {
957 /*
958 * no need to list the ones split off before VHT
959 * or generated here
960 */
961 WLAN_EID_OPMODE_NOTIF,
962 WLAN_EID_EXTENSION, WLAN_EID_EXT_FUTURE_CHAN_GUIDANCE,
963 /* 11ai elements */
964 WLAN_EID_EXTENSION, WLAN_EID_EXT_FILS_SESSION,
965 WLAN_EID_EXTENSION, WLAN_EID_EXT_FILS_PUBLIC_KEY,
966 WLAN_EID_EXTENSION, WLAN_EID_EXT_FILS_KEY_CONFIRM,
967 WLAN_EID_EXTENSION, WLAN_EID_EXT_FILS_HLP_CONTAINER,
968 WLAN_EID_EXTENSION, WLAN_EID_EXT_FILS_IP_ADDR_ASSIGN,
969 /* TODO: add 11ah/11aj/11ak elements */
970 };
971
972 /* RIC already taken above, so no need to handle here anymore */
973 noffset = ieee80211_ie_split(assoc_data->ie, assoc_data->ie_len,
974 before_he, ARRAY_SIZE(before_he),
975 offset);
976 pos = skb_put(skb, noffset - offset);
977 memcpy(pos, assoc_data->ie + offset, noffset - offset);
978 offset = noffset;
979 }
980
57fa5e85
JB		 981 if (sband->band != NL80211_BAND_6GHZ &&
982 !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
b08fbbd8
JB		 983 ieee80211_add_vht_ie(sdata, skb, sband,
984 &assoc_data->ap_vht_cap);
d545daba 985
dc7eb0f2
ST		 986 /*
987 * If AP doesn't support HT, mark HE as disabled.
988 * If on the 5GHz band, make sure it supports VHT.
989 */
990 if (ifmgd->flags & IEEE80211_STA_DISABLE_HT ||
991 (sband->band == NL80211_BAND_5GHZ &&
992 ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
993 ifmgd->flags |= IEEE80211_STA_DISABLE_HE;
994
41cbb0f5
LC		 995 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HE))
996 ieee80211_add_he_ie(sdata, skb, sband);
997
998 /* if present, add any custom non-vendor IEs that go after HE */
b3f51e94 999 if (assoc_data->ie_len) {
66e67e41
JB		 1000 noffset = ieee80211_ie_split_vendor(assoc_data->ie,
1001 assoc_data->ie_len,
1002 offset);
b952f4df 1003 skb_put_data(skb, assoc_data->ie + offset, noffset - offset);
66e67e41
JB		 1004 offset = noffset;
1005 }
1006
76f0303d
JB		 1007 if (assoc_data->wmm) {
1008 if (assoc_data->uapsd) {
dc41e4d4
EP		 1009 qos_info = ifmgd->uapsd_queues;
1010 qos_info |= (ifmgd->uapsd_max_sp_len <<
66e67e41
JB		 1011 IEEE80211_WMM_IE_STA_QOSINFO_SP_SHIFT);
1012 } else {
1013 qos_info = 0;
1014 }
1015
40b861a0 1016 pos = ieee80211_add_wmm_info_ie(skb_put(skb, 9), qos_info);
66e67e41
JB		 1017 }
1018
1019 /* add any remaining custom (i.e. vendor specific here) IEs */
b3f51e94 1020 if (assoc_data->ie_len) {
66e67e41 1021 noffset = assoc_data->ie_len;
b952f4df 1022 skb_put_data(skb, assoc_data->ie + offset, noffset - offset);
66e67e41
JB		 1023 }
1024
39404fee
JM		 1025 if (assoc_data->fils_kek_len &&
1026 fils_encrypt_assoc_req(skb, assoc_data) < 0) {
1027 dev_kfree_skb(skb);
1028 return;
1029 }
1030
4d9ec73d
JM		 1031 pos = skb_tail_pointer(skb);
1032 kfree(ifmgd->assoc_req_ies);
1033 ifmgd->assoc_req_ies = kmemdup(ie_start, pos - ie_start, GFP_ATOMIC);
1034 ifmgd->assoc_req_ies_len = pos - ie_start;
1035
d4e36e55 1036 drv_mgd_prepare_tx(local, sdata, 0);
a1845fc7 1037
66e67e41 1038 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
30686bf7 1039 if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS))
1672c0e3
JB		 1040 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
1041 IEEE80211_TX_INTFL_MLME_CONN_TX;
66e67e41
JB		 1042 ieee80211_tx_skb(sdata, skb);
1043}
1044
572e0012
KV		 1045void ieee80211_send_pspoll(struct ieee80211_local *local,
1046 struct ieee80211_sub_if_data *sdata)
1047{
572e0012
KV		 1048 struct ieee80211_pspoll *pspoll;
1049 struct sk_buff *skb;
572e0012 1050
d8cd189e
KV		 1051 skb = ieee80211_pspoll_get(&local->hw, &sdata->vif);
1052 if (!skb)
572e0012 1053 return;
572e0012 1054
d8cd189e
KV		 1055 pspoll = (struct ieee80211_pspoll *) skb->data;
1056 pspoll->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
572e0012 1057
62ae67be
JB		 1058 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
1059 ieee80211_tx_skb(sdata, skb);
572e0012
KV		 1060}
1061
965bedad
JB		 1062void ieee80211_send_nullfunc(struct ieee80211_local *local,
1063 struct ieee80211_sub_if_data *sdata,
076cdcb1 1064 bool powersave)
965bedad
JB		 1065{
1066 struct sk_buff *skb;
d8cd189e 1067 struct ieee80211_hdr_3addr *nullfunc;
b6f35301 1068 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
965bedad 1069
41cbb0f5
LC		 1070 /* Don't send NDPs when STA is connected HE */
1071 if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1072 !(ifmgd->flags & IEEE80211_STA_DISABLE_HE))
1073 return;
1074
7c181f4f
BCD		 1075 skb = ieee80211_nullfunc_get(&local->hw, &sdata->vif,
1076 !ieee80211_hw_check(&local->hw, DOESNT_SUPPORT_QOS_NDP));
d8cd189e 1077 if (!skb)
965bedad 1078 return;
965bedad 1079
d8cd189e 1080 nullfunc = (struct ieee80211_hdr_3addr *) skb->data;
965bedad 1081 if (powersave)
d8cd189e 1082 nullfunc->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
965bedad 1083
6c17b77b
SF		 1084 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT |
1085 IEEE80211_TX_INTFL_OFFCHAN_TX_OK;
ff40b425 1086
30686bf7 1087 if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS))
ff40b425
PF		 1088 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS;
1089
392b9ffb 1090 if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL)
b6f35301
RM		 1091 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_USE_MINRATE;
1092
62ae67be 1093 ieee80211_tx_skb(sdata, skb);
965bedad
JB		 1094}
1095
d524215f
FF		 1096static void ieee80211_send_4addr_nullfunc(struct ieee80211_local *local,
1097 struct ieee80211_sub_if_data *sdata)
1098{
1099 struct sk_buff *skb;
1100 struct ieee80211_hdr *nullfunc;
1101 __le16 fc;
1102
1103 if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
1104 return;
1105
41cbb0f5
LC		 1106 /* Don't send NDPs when connected HE */
1107 if (!(sdata->u.mgd.flags & IEEE80211_STA_DISABLE_HE))
1108 return;
1109
d524215f 1110 skb = dev_alloc_skb(local->hw.extra_tx_headroom + 30);
d15b8459 1111 if (!skb)
d524215f 1112 return;
d15b8459 1113
d524215f
FF		 1114 skb_reserve(skb, local->hw.extra_tx_headroom);
1115
b080db58 1116 nullfunc = skb_put_zero(skb, 30);
d524215f
FF		 1117 fc = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC |
1118 IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS);
1119 nullfunc->frame_control = fc;
1120 memcpy(nullfunc->addr1, sdata->u.mgd.bssid, ETH_ALEN);
1121 memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
1122 memcpy(nullfunc->addr3, sdata->u.mgd.bssid, ETH_ALEN);
1123 memcpy(nullfunc->addr4, sdata->vif.addr, ETH_ALEN);
1124
1125 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
1126 ieee80211_tx_skb(sdata, skb);
1127}
1128
cc32abd4
JB		 1129/* spectrum management related things */
1130static void ieee80211_chswitch_work(struct work_struct *work)
1131{
1132 struct ieee80211_sub_if_data *sdata =
1133 container_of(work, struct ieee80211_sub_if_data, u.mgd.chswitch_work);
675a0b04 1134 struct ieee80211_local *local = sdata->local;
cc32abd4 1135 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
7578d575 1136 int ret;
cc32abd4 1137
9607e6b6 1138 if (!ieee80211_sdata_running(sdata))
cc32abd4
JB		 1139 return;
1140
8d61ffa5 1141 sdata_lock(sdata);
4c3ebc56
MK		 1142 mutex_lock(&local->mtx);
1143 mutex_lock(&local->chanctx_mtx);
1144
77fdaa12
JB		 1145 if (!ifmgd->associated)
1146 goto out;
cc32abd4 1147
4c3ebc56
MK		 1148 if (!sdata->vif.csa_active)
1149 goto out;
1150
1151 /*
1152 * using reservation isn't immediate as it may be deferred until later
1153 * with multi-vif. once reservation is complete it will re-schedule the
1154 * work with no reserved_chanctx so verify chandef to check if it
1155 * completed successfully
1156 */
1157
1158 if (sdata->reserved_chanctx) {
0007e943
IP		 1159 struct ieee80211_supported_band *sband = NULL;
1160 struct sta_info *mgd_sta = NULL;
1161 enum ieee80211_sta_rx_bandwidth bw = IEEE80211_STA_RX_BW_20;
1162
4c3ebc56
MK		 1163 /*
1164 * with multi-vif csa driver may call ieee80211_csa_finish()
1165 * many times while waiting for other interfaces to use their
1166 * reservations
1167 */
1168 if (sdata->reserved_ready)
1169 goto out;
1170
0007e943
IP		 1171 if (sdata->vif.bss_conf.chandef.width !=
1172 sdata->csa_chandef.width) {
1173 /*
1174 * For managed interface, we need to also update the AP
1175 * station bandwidth and align the rate scale algorithm
1176 * on the bandwidth change. Here we only consider the
1177 * bandwidth of the new channel definition (as channel
1178 * switch flow does not have the full HT/VHT/HE
1179 * information), assuming that if additional changes are
1180 * required they would be done as part of the processing
1181 * of the next beacon from the AP.
1182 */
1183 switch (sdata->csa_chandef.width) {
1184 case NL80211_CHAN_WIDTH_20_NOHT:
1185 case NL80211_CHAN_WIDTH_20:
1186 default:
1187 bw = IEEE80211_STA_RX_BW_20;
1188 break;
1189 case NL80211_CHAN_WIDTH_40:
1190 bw = IEEE80211_STA_RX_BW_40;
1191 break;
1192 case NL80211_CHAN_WIDTH_80:
1193 bw = IEEE80211_STA_RX_BW_80;
1194 break;
1195 case NL80211_CHAN_WIDTH_80P80:
1196 case NL80211_CHAN_WIDTH_160:
1197 bw = IEEE80211_STA_RX_BW_160;
1198 break;
1199 }
1200
1201 mgd_sta = sta_info_get(sdata, ifmgd->bssid);
1202 sband =
1203 local->hw.wiphy->bands[sdata->csa_chandef.chan->band];
1204 }
1205
1206 if (sdata->vif.bss_conf.chandef.width >
1207 sdata->csa_chandef.width) {
1208 mgd_sta->sta.bandwidth = bw;
1209 rate_control_rate_update(local, sband, mgd_sta,
1210 IEEE80211_RC_BW_CHANGED);
1211 }
1212
4c3ebc56
MK		 1213 ret = ieee80211_vif_use_reserved_context(sdata);
1214 if (ret) {
1215 sdata_info(sdata,
1216 "failed to use reserved channel context, disconnecting (err=%d)\n",
1217 ret);
1218 ieee80211_queue_work(&sdata->local->hw,
1219 &ifmgd->csa_connection_drop_work);
1220 goto out;
1221 }
1222
0007e943
IP		 1223 if (sdata->vif.bss_conf.chandef.width <
1224 sdata->csa_chandef.width) {
1225 mgd_sta->sta.bandwidth = bw;
1226 rate_control_rate_update(local, sband, mgd_sta,
1227 IEEE80211_RC_BW_CHANGED);
1228 }
1229
4c3ebc56
MK		 1230 goto out;
1231 }
1232
1233 if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef,
1234 &sdata->csa_chandef)) {
7578d575 1235 sdata_info(sdata,
4c3ebc56 1236 "failed to finalize channel switch, disconnecting\n");
7578d575
AN		 1237 ieee80211_queue_work(&sdata->local->hw,
1238 &ifmgd->csa_connection_drop_work);
1239 goto out;
1240 }
675a0b04 1241
0c21e632
LC		 1242 ifmgd->csa_waiting_bcn = true;
1243
1244 ieee80211_sta_reset_beacon_monitor(sdata);
1245 ieee80211_sta_reset_conn_monitor(sdata);
1246
1247out:
1248 mutex_unlock(&local->chanctx_mtx);
1249 mutex_unlock(&local->mtx);
1250 sdata_unlock(sdata);
1251}
1252
1253static void ieee80211_chswitch_post_beacon(struct ieee80211_sub_if_data *sdata)
1254{
1255 struct ieee80211_local *local = sdata->local;
1256 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
1257 int ret;
1258
1259 sdata_assert_lock(sdata);
1260
1261 WARN_ON(!sdata->vif.csa_active);
4c3ebc56 1262
a46992b4
LC		 1263 if (sdata->csa_block_tx) {
1264 ieee80211_wake_vif_queues(local, sdata,
1265 IEEE80211_QUEUE_STOP_REASON_CSA);
1266 sdata->csa_block_tx = false;
1267 }
7578d575 1268
0c21e632
LC		 1269 sdata->vif.csa_active = false;
1270 ifmgd->csa_waiting_bcn = false;
1271
f1d65583
LC		 1272 ret = drv_post_channel_switch(sdata);
1273 if (ret) {
1274 sdata_info(sdata,
1275 "driver post channel switch failed, disconnecting\n");
1276 ieee80211_queue_work(&local->hw,
1277 &ifmgd->csa_connection_drop_work);
0c21e632 1278 return;
f1d65583 1279 }
688b1ecf
LC		 1280
1281 cfg80211_ch_switch_notify(sdata->dev, &sdata->reserved_chandef);
cc32abd4
JB		 1282}
1283
5ce6e438
JB		 1284void ieee80211_chswitch_done(struct ieee80211_vif *vif, bool success)
1285{
55de908a
JB		 1286 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
1287 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
5ce6e438
JB		 1288
1289 trace_api_chswitch_done(sdata, success);
1290 if (!success) {
882a7c69
JB		 1291 sdata_info(sdata,
1292 "driver channel switch failed, disconnecting\n");
1293 ieee80211_queue_work(&sdata->local->hw,
1294 &ifmgd->csa_connection_drop_work);
1295 } else {
1296 ieee80211_queue_work(&sdata->local->hw, &ifmgd->chswitch_work);
5ce6e438 1297 }
5ce6e438
JB		 1298}
1299EXPORT_SYMBOL(ieee80211_chswitch_done);
1300
34f11cd3 1301static void ieee80211_chswitch_timer(struct timer_list *t)
cc32abd4
JB		 1302{
1303 struct ieee80211_sub_if_data *sdata =
34f11cd3 1304 from_timer(sdata, t, u.mgd.chswitch_timer);
5bb644a0 1305
9b7d72c1 1306 ieee80211_queue_work(&sdata->local->hw, &sdata->u.mgd.chswitch_work);
cc32abd4
JB		 1307}
1308
b9cc81d8
SS		 1309static void
1310ieee80211_sta_abort_chanswitch(struct ieee80211_sub_if_data *sdata)
1311{
1312 struct ieee80211_local *local = sdata->local;
1313
1314 if (!local->ops->abort_channel_switch)
1315 return;
1316
1317 mutex_lock(&local->mtx);
1318
1319 mutex_lock(&local->chanctx_mtx);
1320 ieee80211_vif_unreserve_chanctx(sdata);
1321 mutex_unlock(&local->chanctx_mtx);
1322
1323 if (sdata->csa_block_tx)
1324 ieee80211_wake_vif_queues(local, sdata,
1325 IEEE80211_QUEUE_STOP_REASON_CSA);
1326
1327 sdata->csa_block_tx = false;
1328 sdata->vif.csa_active = false;
1329
1330 mutex_unlock(&local->mtx);
1331
1332 drv_abort_channel_switch(sdata);
1333}
1334
37799e52 1335static void
4a3cb702 1336ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
2ba45384
LC		 1337 u64 timestamp, u32 device_timestamp,
1338 struct ieee802_11_elems *elems,
04a161f4 1339 bool beacon)
cc32abd4 1340{
b4f286a1 1341 struct ieee80211_local *local = sdata->local;
cc32abd4 1342 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
37799e52 1343 struct cfg80211_bss *cbss = ifmgd->associated;
4c3ebc56 1344 struct ieee80211_chanctx_conf *conf;
55de908a 1345 struct ieee80211_chanctx *chanctx;
57fbcce3 1346 enum nl80211_band current_band;
c0f17eb9 1347 struct ieee80211_csa_ie csa_ie;
6d027bcc 1348 struct ieee80211_channel_switch ch_switch;
2a333a0d 1349 struct ieee80211_bss *bss;
e6b7cde4 1350 int res;
cc32abd4 1351
8d61ffa5 1352 sdata_assert_lock(sdata);
77fdaa12 1353
37799e52 1354 if (!cbss)
cc32abd4
JB		 1355 return;
1356
b4f286a1 1357 if (local->scanning)
cc32abd4
JB		 1358 return;
1359
e6b7cde4 1360 current_band = cbss->channel->band;
2a333a0d 1361 bss = (void *)cbss->priv;
84469a45 1362 res = ieee80211_parse_ch_switch_ie(sdata, elems, current_band,
2a333a0d 1363 bss->vht_cap_info,
e6b7cde4 1364 ifmgd->flags,
c0f17eb9 1365 ifmgd->associated->bssid, &csa_ie);
fafd2bce
SS		 1366
1367 if (!res) {
1368 ch_switch.timestamp = timestamp;
1369 ch_switch.device_timestamp = device_timestamp;
2bf973ff 1370 ch_switch.block_tx = csa_ie.mode;
fafd2bce
SS		 1371 ch_switch.chandef = csa_ie.chandef;
1372 ch_switch.count = csa_ie.count;
1373 ch_switch.delay = csa_ie.max_switch_time;
1374 }
1375
b9cc81d8 1376 if (res < 0) {
b4f286a1 1377 ieee80211_queue_work(&local->hw,
882a7c69 1378 &ifmgd->csa_connection_drop_work);
cc32abd4 1379 return;
b9cc81d8
SS		 1380 }
1381
fafd2bce
SS		 1382 if (beacon && sdata->vif.csa_active && !ifmgd->csa_waiting_bcn) {
1383 if (res)
1384 ieee80211_sta_abort_chanswitch(sdata);
1385 else
1386 drv_channel_switch_rx_beacon(sdata, &ch_switch);
b9cc81d8
SS		 1387 return;
1388 } else if (sdata->vif.csa_active || res) {
1389 /* disregard subsequent announcements if already processing */
1390 return;
1391 }
cd64f2a9 1392
c0f17eb9 1393 if (!cfg80211_chandef_usable(local->hw.wiphy, &csa_ie.chandef,
85220d71
JB		 1394 IEEE80211_CHAN_DISABLED)) {
1395 sdata_info(sdata,
b6011960
TP		 1396 "AP %pM switches to unsupported channel "
1397 "(%d.%03d MHz, width:%d, CF1/2: %d.%03d/%d MHz), "
1398 "disconnecting\n",
e6b7cde4 1399 ifmgd->associated->bssid,
c0f17eb9 1400 csa_ie.chandef.chan->center_freq,
b6011960 1401 csa_ie.chandef.chan->freq_offset,
c0f17eb9 1402 csa_ie.chandef.width, csa_ie.chandef.center_freq1,
b6011960 1403 csa_ie.chandef.freq1_offset,
c0f17eb9 1404 csa_ie.chandef.center_freq2);
85220d71
JB		 1405 ieee80211_queue_work(&local->hw,
1406 &ifmgd->csa_connection_drop_work);
1407 return;
1408 }
1409
f84eaa10 1410 if (cfg80211_chandef_identical(&csa_ie.chandef,
9792875c
SS		 1411 &sdata->vif.bss_conf.chandef) &&
1412 (!csa_ie.mode || !beacon)) {
f84eaa10
JB		 1413 if (ifmgd->csa_ignored_same_chan)
1414 return;
1415 sdata_info(sdata,
1416 "AP %pM tries to chanswitch to same channel, ignore\n",
1417 ifmgd->associated->bssid);
1418 ifmgd->csa_ignored_same_chan = true;
1419 return;
1420 }
1421
c5a71688
AN		 1422 /*
1423 * Drop all TDLS peers - either we disconnect or move to a different
1424 * channel from this point on. There's no telling what our peer will do.
1425 * The TDLS WIDER_BW scenario is also problematic, as peers might now
1426 * have an incompatible wider chandef.
1427 */
1428 ieee80211_teardown_tdls_peers(sdata);
1429
4c3ebc56 1430 mutex_lock(&local->mtx);
7578d575 1431 mutex_lock(&local->chanctx_mtx);
4c3ebc56
MK		 1432 conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
1433 lockdep_is_held(&local->chanctx_mtx));
1434 if (!conf) {
1435 sdata_info(sdata,
1436 "no channel context assigned to vif?, disconnecting\n");
f3b0bbb3 1437 goto drop_connection;
4c3ebc56
MK		 1438 }
1439
1440 chanctx = container_of(conf, struct ieee80211_chanctx, conf);
1441
0f791eb4 1442 if (local->use_chanctx &&
30686bf7 1443 !ieee80211_hw_check(&local->hw, CHANCTX_STA_CSA)) {
0f791eb4
LC		 1444 sdata_info(sdata,
1445 "driver doesn't support chan-switch with channel contexts\n");
f3b0bbb3 1446 goto drop_connection;
55de908a
JB		 1447 }
1448
6d027bcc
LC		 1449 if (drv_pre_channel_switch(sdata, &ch_switch)) {
1450 sdata_info(sdata,
1451 "preparing for channel switch failed, disconnecting\n");
f3b0bbb3 1452 goto drop_connection;
6d027bcc
LC		 1453 }
1454
4c3ebc56
MK		 1455 res = ieee80211_vif_reserve_chanctx(sdata, &csa_ie.chandef,
1456 chanctx->mode, false);
1457 if (res) {
55de908a 1458 sdata_info(sdata,
4c3ebc56
MK		 1459 "failed to reserve channel context for channel switch, disconnecting (err=%d)\n",
1460 res);
f3b0bbb3 1461 goto drop_connection;
55de908a 1462 }
b4f286a1 1463 mutex_unlock(&local->chanctx_mtx);
55de908a 1464
c46a73f3 1465 sdata->vif.csa_active = true;
4c3ebc56 1466 sdata->csa_chandef = csa_ie.chandef;
2bf973ff 1467 sdata->csa_block_tx = csa_ie.mode;
f84eaa10 1468 ifmgd->csa_ignored_same_chan = false;
55de908a 1469
59af6928 1470 if (sdata->csa_block_tx)
a46992b4
LC		 1471 ieee80211_stop_vif_queues(local, sdata,
1472 IEEE80211_QUEUE_STOP_REASON_CSA);
59af6928 1473 mutex_unlock(&local->mtx);
57eebdf3 1474
2f457293
LC		 1475 cfg80211_ch_switch_started_notify(sdata->dev, &csa_ie.chandef,
1476 csa_ie.count);
1477
b4f286a1 1478 if (local->ops->channel_switch) {
5ce6e438 1479 /* use driver's channel switch callback */
0f791eb4 1480 drv_channel_switch(local, sdata, &ch_switch);
5ce6e438
JB		 1481 return;
1482 }
1483
1484 /* channel switch handled in software */
c0f17eb9 1485 if (csa_ie.count <= 1)
b4f286a1 1486 ieee80211_queue_work(&local->hw, &ifmgd->chswitch_work);
57eebdf3 1487 else
cc32abd4 1488 mod_timer(&ifmgd->chswitch_timer,
ff1e417c
LC		 1489 TU_TO_EXP_TIME((csa_ie.count - 1) *
1490 cbss->beacon_interval));
f3b0bbb3
JB		 1491 return;
1492 drop_connection:
6c18b27d
EG		 1493 /*
1494 * This is just so that the disconnect flow will know that
1495 * we were trying to switch channel and failed. In case the
1496 * mode is 1 (we are not allowed to Tx), we will know not to
1497 * send a deauthentication frame. Those two fields will be
1498 * reset when the disconnection worker runs.
1499 */
1500 sdata->vif.csa_active = true;
2bf973ff 1501 sdata->csa_block_tx = csa_ie.mode;
6c18b27d 1502
f3b0bbb3
JB		 1503 ieee80211_queue_work(&local->hw, &ifmgd->csa_connection_drop_work);
1504 mutex_unlock(&local->chanctx_mtx);
1505 mutex_unlock(&local->mtx);
cc32abd4
JB		 1506}
1507
24a4e400
SG		 1508static bool
1509ieee80211_find_80211h_pwr_constr(struct ieee80211_sub_if_data *sdata,
1510 struct ieee80211_channel *channel,
1511 const u8 *country_ie, u8 country_ie_len,
1512 const u8 *pwr_constr_elem,
1513 int *chan_pwr, int *pwr_reduction)
cc32abd4 1514{
04b7b2ff
JB		 1515 struct ieee80211_country_ie_triplet *triplet;
1516 int chan = ieee80211_frequency_to_channel(channel->center_freq);
24a4e400 1517 int i, chan_increment;
04b7b2ff 1518 bool have_chan_pwr = false;
cc32abd4 1519
04b7b2ff
JB		 1520 /* Invalid IE */
1521 if (country_ie_len % 2 || country_ie_len < IEEE80211_COUNTRY_IE_MIN_LEN)
24a4e400 1522 return false;
cc32abd4 1523
04b7b2ff
JB		 1524 triplet = (void *)(country_ie + 3);
1525 country_ie_len -= 3;
1526
1527 switch (channel->band) {
1528 default:
1529 WARN_ON_ONCE(1);
1530 /* fall through */
57fbcce3
JB		 1531 case NL80211_BAND_2GHZ:
1532 case NL80211_BAND_60GHZ:
04b7b2ff
JB		 1533 chan_increment = 1;
1534 break;
57fbcce3 1535 case NL80211_BAND_5GHZ:
6fcb56ce 1536 case NL80211_BAND_6GHZ:
04b7b2ff
JB		 1537 chan_increment = 4;
1538 break;
cc32abd4 1539 }
04b7b2ff
JB		 1540
1541 /* find channel */
1542 while (country_ie_len >= 3) {
1543 u8 first_channel = triplet->chans.first_channel;
1544
1545 if (first_channel >= IEEE80211_COUNTRY_EXTENSION_ID)
1546 goto next;
1547
1548 for (i = 0; i < triplet->chans.num_channels; i++) {
1549 if (first_channel + i * chan_increment == chan) {
1550 have_chan_pwr = true;
24a4e400 1551 *chan_pwr = triplet->chans.max_power;
04b7b2ff
JB		 1552 break;
1553 }
1554 }
1555 if (have_chan_pwr)
1556 break;
1557
1558 next:
1559 triplet++;
1560 country_ie_len -= 3;
1561 }
1562
a5fee9cb 1563 if (have_chan_pwr && pwr_constr_elem)
24a4e400 1564 *pwr_reduction = *pwr_constr_elem;
a5fee9cb
MB		 1565 else
1566 *pwr_reduction = 0;
1567
24a4e400
SG		 1568 return have_chan_pwr;
1569}
1570
c8d65917
SG		 1571static void ieee80211_find_cisco_dtpc(struct ieee80211_sub_if_data *sdata,
1572 struct ieee80211_channel *channel,
1573 const u8 *cisco_dtpc_ie,
1574 int *pwr_level)
1575{
1576 /* From practical testing, the first data byte of the DTPC element
1577 * seems to contain the requested dBm level, and the CLI on Cisco
1578 * APs clearly state the range is -127 to 127 dBm, which indicates
1579 * a signed byte, although it seemingly never actually goes negative.
1580 * The other byte seems to always be zero.
1581 */
1582 *pwr_level = (__s8)cisco_dtpc_ie[4];
1583}
1584
24a4e400
SG		 1585static u32 ieee80211_handle_pwr_constr(struct ieee80211_sub_if_data *sdata,
1586 struct ieee80211_channel *channel,
1587 struct ieee80211_mgmt *mgmt,
1588 const u8 *country_ie, u8 country_ie_len,
c8d65917
SG		 1589 const u8 *pwr_constr_ie,
1590 const u8 *cisco_dtpc_ie)
24a4e400 1591{
c8d65917
SG		 1592 bool has_80211h_pwr = false, has_cisco_pwr = false;
1593 int chan_pwr = 0, pwr_reduction_80211h = 0;
1594 int pwr_level_cisco, pwr_level_80211h;
24a4e400 1595 int new_ap_level;
a5fee9cb 1596 __le16 capab = mgmt->u.probe_resp.capab_info;
04b7b2ff 1597
a5fee9cb
MB		 1598 if (country_ie &&
1599 (capab & cpu_to_le16(WLAN_CAPABILITY_SPECTRUM_MGMT) ||
1600 capab & cpu_to_le16(WLAN_CAPABILITY_RADIO_MEASURE))) {
24a4e400
SG		 1601 has_80211h_pwr = ieee80211_find_80211h_pwr_constr(
1602 sdata, channel, country_ie, country_ie_len,
1603 pwr_constr_ie, &chan_pwr, &pwr_reduction_80211h);
c8d65917
SG		 1604 pwr_level_80211h =
1605 max_t(int, 0, chan_pwr - pwr_reduction_80211h);
1606 }
1607
1608 if (cisco_dtpc_ie) {
1609 ieee80211_find_cisco_dtpc(
1610 sdata, channel, cisco_dtpc_ie, &pwr_level_cisco);
1611 has_cisco_pwr = true;
24a4e400 1612 }
04b7b2ff 1613
c8d65917 1614 if (!has_80211h_pwr && !has_cisco_pwr)
1ea6f9c0 1615 return 0;
04b7b2ff 1616
c8d65917
SG		 1617 /* If we have both 802.11h and Cisco DTPC, apply both limits
1618 * by picking the smallest of the two power levels advertised.
1619 */
1620 if (has_80211h_pwr &&
1621 (!has_cisco_pwr || pwr_level_80211h <= pwr_level_cisco)) {
a87da0cb
JB		 1622 new_ap_level = pwr_level_80211h;
1623
1624 if (sdata->ap_power_level == new_ap_level)
1625 return 0;
1626
cef2fc1c
JL		 1627 sdata_dbg(sdata,
1628 "Limiting TX power to %d (%d - %d) dBm as advertised by %pM\n",
1629 pwr_level_80211h, chan_pwr, pwr_reduction_80211h,
1630 sdata->u.mgd.bssid);
c8d65917 1631 } else { /* has_cisco_pwr is always true here. */
a87da0cb
JB		 1632 new_ap_level = pwr_level_cisco;
1633
1634 if (sdata->ap_power_level == new_ap_level)
1635 return 0;
1636
cef2fc1c
JL		 1637 sdata_dbg(sdata,
1638 "Limiting TX power to %d dBm as advertised by %pM\n",
1639 pwr_level_cisco, sdata->u.mgd.bssid);
c8d65917 1640 }
04b7b2ff 1641
1ea6f9c0
JB		 1642 sdata->ap_power_level = new_ap_level;
1643 if (__ieee80211_recalc_txpower(sdata))
1644 return BSS_CHANGED_TXPOWER;
1645 return 0;
cc32abd4
JB		 1646}
1647
965bedad
JB		 1648/* powersave */
1649static void ieee80211_enable_ps(struct ieee80211_local *local,
1650 struct ieee80211_sub_if_data *sdata)
1651{
1652 struct ieee80211_conf *conf = &local->hw.conf;
1653
d5edaedc
JB		 1654 /*
1655 * If we are scanning right now then the parameters will
1656 * take effect when scan finishes.
1657 */
fbe9c429 1658 if (local->scanning)
d5edaedc
JB		 1659 return;
1660
965bedad 1661 if (conf->dynamic_ps_timeout > 0 &&
30686bf7 1662 !ieee80211_hw_check(&local->hw, SUPPORTS_DYNAMIC_PS)) {
965bedad
JB		 1663 mod_timer(&local->dynamic_ps_timer, jiffies +
1664 msecs_to_jiffies(conf->dynamic_ps_timeout));
1665 } else {
30686bf7 1666 if (ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK))
076cdcb1 1667 ieee80211_send_nullfunc(local, sdata, true);
375177bf 1668
30686bf7
JB		 1669 if (ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK) &&
1670 ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS))
2a13052f
JO		 1671 return;
1672
1673 conf->flags |= IEEE80211_CONF_PS;
1674 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
965bedad
JB		 1675 }
1676}
1677
1678static void ieee80211_change_ps(struct ieee80211_local *local)
1679{
1680 struct ieee80211_conf *conf = &local->hw.conf;
1681
1682 if (local->ps_sdata) {
965bedad
JB		 1683 ieee80211_enable_ps(local, local->ps_sdata);
1684 } else if (conf->flags & IEEE80211_CONF_PS) {
1685 conf->flags &= ~IEEE80211_CONF_PS;
1686 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1687 del_timer_sync(&local->dynamic_ps_timer);
1688 cancel_work_sync(&local->dynamic_ps_enable_work);
1689 }
1690}
1691
808118cb
JY		 1692static bool ieee80211_powersave_allowed(struct ieee80211_sub_if_data *sdata)
1693{
1694 struct ieee80211_if_managed *mgd = &sdata->u.mgd;
1695 struct sta_info *sta = NULL;
c2c98fde 1696 bool authorized = false;
808118cb
JY		 1697
1698 if (!mgd->powersave)
1699 return false;
1700
05cb9108
JB		 1701 if (mgd->broken_ap)
1702 return false;
1703
808118cb
JY		 1704 if (!mgd->associated)
1705 return false;
1706
392b9ffb 1707 if (mgd->flags & IEEE80211_STA_CONNECTION_POLL)
808118cb
JY		 1708 return false;
1709
989c6505 1710 if (!mgd->have_beacon)
ce857888
AB		 1711 return false;
1712
808118cb
JY		 1713 rcu_read_lock();
1714 sta = sta_info_get(sdata, mgd->bssid);
1715 if (sta)
c2c98fde 1716 authorized = test_sta_flag(sta, WLAN_STA_AUTHORIZED);
808118cb
JY		 1717 rcu_read_unlock();
1718
c2c98fde 1719 return authorized;
808118cb
JY		 1720}
1721
965bedad 1722/* need to hold RTNL or interface lock */
4a733ef1 1723void ieee80211_recalc_ps(struct ieee80211_local *local)
965bedad
JB		 1724{
1725 struct ieee80211_sub_if_data *sdata, *found = NULL;
1726 int count = 0;
195e294d 1727 int timeout;
965bedad 1728
30686bf7 1729 if (!ieee80211_hw_check(&local->hw, SUPPORTS_PS)) {
965bedad
JB		 1730 local->ps_sdata = NULL;
1731 return;
1732 }
1733
1734 list_for_each_entry(sdata, &local->interfaces, list) {
9607e6b6 1735 if (!ieee80211_sdata_running(sdata))
965bedad 1736 continue;
8c7914de
RM		 1737 if (sdata->vif.type == NL80211_IFTYPE_AP) {
1738 /* If an AP vif is found, then disable PS
1739 * by setting the count to zero thereby setting
1740 * ps_sdata to NULL.
1741 */
1742 count = 0;
1743 break;
1744 }
965bedad
JB		 1745 if (sdata->vif.type != NL80211_IFTYPE_STATION)
1746 continue;
1747 found = sdata;
1748 count++;
1749 }
1750
808118cb 1751 if (count == 1 && ieee80211_powersave_allowed(found)) {
4a733ef1 1752 u8 dtimper = found->u.mgd.dtim_period;
10f644a4 1753
ff616381 1754 timeout = local->dynamic_ps_forced_timeout;
4a733ef1
JB		 1755 if (timeout < 0)
1756 timeout = 100;
09b85568 1757 local->hw.conf.dynamic_ps_timeout = timeout;
195e294d 1758
4a733ef1
JB		 1759 /* If the TIM IE is invalid, pretend the value is 1 */
1760 if (!dtimper)
1761 dtimper = 1;
1762
1763 local->hw.conf.ps_dtim_period = dtimper;
1764 local->ps_sdata = found;
10f644a4 1765 } else {
965bedad 1766 local->ps_sdata = NULL;
10f644a4 1767 }
965bedad
JB		 1768
1769 ieee80211_change_ps(local);
1770}
1771
ab095877
EP		 1772void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata)
1773{
1774 bool ps_allowed = ieee80211_powersave_allowed(sdata);
1775
1776 if (sdata->vif.bss_conf.ps != ps_allowed) {
1777 sdata->vif.bss_conf.ps = ps_allowed;
1778 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_PS);
1779 }
1780}
1781
965bedad
JB		 1782void ieee80211_dynamic_ps_disable_work(struct work_struct *work)
1783{
1784 struct ieee80211_local *local =
1785 container_of(work, struct ieee80211_local,
1786 dynamic_ps_disable_work);
1787
1788 if (local->hw.conf.flags & IEEE80211_CONF_PS) {
1789 local->hw.conf.flags &= ~IEEE80211_CONF_PS;
1790 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1791 }
1792
1793 ieee80211_wake_queues_by_reason(&local->hw,
445ea4e8 1794 IEEE80211_MAX_QUEUE_MAP,
cca07b00
LC		 1795 IEEE80211_QUEUE_STOP_REASON_PS,
1796 false);
965bedad
JB		 1797}
1798
1799void ieee80211_dynamic_ps_enable_work(struct work_struct *work)
1800{
1801 struct ieee80211_local *local =
1802 container_of(work, struct ieee80211_local,
1803 dynamic_ps_enable_work);
1804 struct ieee80211_sub_if_data *sdata = local->ps_sdata;
5e34069c 1805 struct ieee80211_if_managed *ifmgd;
1ddc2867
RM		 1806 unsigned long flags;
1807 int q;
965bedad
JB		 1808
1809 /* can only happen when PS was just disabled anyway */
1810 if (!sdata)
1811 return;
1812
5e34069c
CL		 1813 ifmgd = &sdata->u.mgd;
1814
965bedad
JB		 1815 if (local->hw.conf.flags & IEEE80211_CONF_PS)
1816 return;
1817
09b85568 1818 if (local->hw.conf.dynamic_ps_timeout > 0) {
77b7023a
AN		 1819 /* don't enter PS if TX frames are pending */
1820 if (drv_tx_frames_pending(local)) {
1ddc2867
RM		 1821 mod_timer(&local->dynamic_ps_timer, jiffies +
1822 msecs_to_jiffies(
1823 local->hw.conf.dynamic_ps_timeout));
1824 return;
1825 }
77b7023a
AN		 1826
1827 /*
1828 * transmission can be stopped by others which leads to
1829 * dynamic_ps_timer expiry. Postpone the ps timer if it
1830 * is not the actual idle state.
1831 */
1832 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
1833 for (q = 0; q < local->hw.queues; q++) {
1834 if (local->queue_stop_reasons[q]) {
1835 spin_unlock_irqrestore(&local->queue_stop_reason_lock,
1836 flags);
1837 mod_timer(&local->dynamic_ps_timer, jiffies +
1838 msecs_to_jiffies(
1839 local->hw.conf.dynamic_ps_timeout));
1840 return;
1841 }
1842 }
1843 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
1ddc2867 1844 }
1ddc2867 1845
30686bf7 1846 if (ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK) &&
9c38a8b4 1847 !(ifmgd->flags & IEEE80211_STA_NULLFUNC_ACKED)) {
a1598383 1848 if (drv_tx_frames_pending(local)) {
e8306f98
VN		 1849 mod_timer(&local->dynamic_ps_timer, jiffies +
1850 msecs_to_jiffies(
1851 local->hw.conf.dynamic_ps_timeout));
a1598383 1852 } else {
076cdcb1 1853 ieee80211_send_nullfunc(local, sdata, true);
e8306f98 1854 /* Flush to get the tx status of nullfunc frame */
3b24f4c6 1855 ieee80211_flush_queues(local, sdata, false);
e8306f98 1856 }
f3e85b9e
VN		 1857 }
1858
30686bf7
JB		 1859 if (!(ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS) &&
1860 ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK)) ||
375177bf
VN		 1861 (ifmgd->flags & IEEE80211_STA_NULLFUNC_ACKED)) {
1862 ifmgd->flags &= ~IEEE80211_STA_NULLFUNC_ACKED;
1863 local->hw.conf.flags |= IEEE80211_CONF_PS;
1864 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1865 }
965bedad
JB		 1866}
1867
34f11cd3 1868void ieee80211_dynamic_ps_timer(struct timer_list *t)
965bedad 1869{
34f11cd3 1870 struct ieee80211_local *local = from_timer(local, t, dynamic_ps_timer);
965bedad 1871
42935eca 1872 ieee80211_queue_work(&local->hw, &local->dynamic_ps_enable_work);
965bedad
JB		 1873}
1874
164eb02d
SW		 1875void ieee80211_dfs_cac_timer_work(struct work_struct *work)
1876{
a85a7e28 1877 struct delayed_work *delayed_work = to_delayed_work(work);
164eb02d
SW		 1878 struct ieee80211_sub_if_data *sdata =
1879 container_of(delayed_work, struct ieee80211_sub_if_data,
1880 dfs_cac_timer_work);
d2859df5 1881 struct cfg80211_chan_def chandef = sdata->vif.bss_conf.chandef;
164eb02d 1882
34a3740d
JB		 1883 mutex_lock(&sdata->local->mtx);
1884 if (sdata->wdev.cac_started) {
1885 ieee80211_vif_release_channel(sdata);
1886 cfg80211_cac_event(sdata->dev, &chandef,
1887 NL80211_RADAR_CAC_FINISHED,
1888 GFP_KERNEL);
1889 }
1890 mutex_unlock(&sdata->local->mtx);
164eb02d
SW		 1891}
1892
02219b3a
JB		 1893static bool
1894__ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata)
1895{
1896 struct ieee80211_local *local = sdata->local;
1897 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
cc72f6e2 1898 bool ret = false;
02219b3a
JB		 1899 int ac;
1900
1901 if (local->hw.queues < IEEE80211_NUM_ACS)
1902 return false;
1903
1904 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
1905 struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac];
1906 int non_acm_ac;
1907 unsigned long now = jiffies;
1908
1909 if (tx_tspec->action == TX_TSPEC_ACTION_NONE &&
1910 tx_tspec->admitted_time &&
1911 time_after(now, tx_tspec->time_slice_start + HZ)) {
1912 tx_tspec->consumed_tx_time = 0;
1913 tx_tspec->time_slice_start = now;
1914
1915 if (tx_tspec->downgraded)
1916 tx_tspec->action =
1917 TX_TSPEC_ACTION_STOP_DOWNGRADE;
1918 }
1919
1920 switch (tx_tspec->action) {
1921 case TX_TSPEC_ACTION_STOP_DOWNGRADE:
1922 /* take the original parameters */
1923 if (drv_conf_tx(local, sdata, ac, &sdata->tx_conf[ac]))
1924 sdata_err(sdata,
1925 "failed to set TX queue parameters for queue %d\n",
1926 ac);
1927 tx_tspec->action = TX_TSPEC_ACTION_NONE;
1928 tx_tspec->downgraded = false;
1929 ret = true;
1930 break;
1931 case TX_TSPEC_ACTION_DOWNGRADE:
1932 if (time_after(now, tx_tspec->time_slice_start + HZ)) {
1933 tx_tspec->action = TX_TSPEC_ACTION_NONE;
1934 ret = true;
1935 break;
1936 }
1937 /* downgrade next lower non-ACM AC */
1938 for (non_acm_ac = ac + 1;
1939 non_acm_ac < IEEE80211_NUM_ACS;
1940 non_acm_ac++)
1941 if (!(sdata->wmm_acm & BIT(7 - 2 * non_acm_ac)))
1942 break;
93db1d9e
JB		 1943 /* Usually the loop will result in using BK even if it
1944 * requires admission control, but such a configuration
1945 * makes no sense and we have to transmit somehow - the
1946 * AC selection does the same thing.
1947 * If we started out trying to downgrade from BK, then
1948 * the extra condition here might be needed.
02219b3a 1949 */
93db1d9e
JB		 1950 if (non_acm_ac >= IEEE80211_NUM_ACS)
1951 non_acm_ac = IEEE80211_AC_BK;
02219b3a
JB		 1952 if (drv_conf_tx(local, sdata, ac,
1953 &sdata->tx_conf[non_acm_ac]))
1954 sdata_err(sdata,
1955 "failed to set TX queue parameters for queue %d\n",
1956 ac);
1957 tx_tspec->action = TX_TSPEC_ACTION_NONE;
1958 ret = true;
1959 schedule_delayed_work(&ifmgd->tx_tspec_wk,
1960 tx_tspec->time_slice_start + HZ - now + 1);
1961 break;
1962 case TX_TSPEC_ACTION_NONE:
1963 /* nothing now */
1964 break;
1965 }
1966 }
1967
1968 return ret;
1969}
1970
1971void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata)
1972{
1973 if (__ieee80211_sta_handle_tspec_ac_params(sdata))
1974 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
1975}
1976
1977static void ieee80211_sta_handle_tspec_ac_params_wk(struct work_struct *work)
1978{
1979 struct ieee80211_sub_if_data *sdata;
1980
1981 sdata = container_of(work, struct ieee80211_sub_if_data,
1982 u.mgd.tx_tspec_wk.work);
1983 ieee80211_sta_handle_tspec_ac_params(sdata);
1984}
1985
60f8b39c 1986/* MLME */
41cbb0f5
LC		 1987static bool
1988ieee80211_sta_wmm_params(struct ieee80211_local *local,
1989 struct ieee80211_sub_if_data *sdata,
1990 const u8 *wmm_param, size_t wmm_param_len,
1991 const struct ieee80211_mu_edca_param_set *mu_edca)
f0706e82 1992{
2ed77ea6 1993 struct ieee80211_tx_queue_params params[IEEE80211_NUM_ACS];
4ced3f74 1994 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
f0706e82 1995 size_t left;
2e249fc3 1996 int count, mu_edca_count, ac;
4a3cb702
JB		 1997 const u8 *pos;
1998 u8 uapsd_queues = 0;
f0706e82 1999
e1b3ec1a 2000 if (!local->ops->conf_tx)
7d25745d 2001 return false;
e1b3ec1a 2002
32c5057b 2003 if (local->hw.queues < IEEE80211_NUM_ACS)
7d25745d 2004 return false;
3434fbd3
JB		 2005
2006 if (!wmm_param)
7d25745d 2007 return false;
3434fbd3 2008
f0706e82 2009 if (wmm_param_len < 8 || wmm_param[5] /* version */ != 1)
7d25745d 2010 return false;
ab13315a
KV		 2011
2012 if (ifmgd->flags & IEEE80211_STA_UAPSD_ENABLED)
dc41e4d4 2013 uapsd_queues = ifmgd->uapsd_queues;
ab13315a 2014
f0706e82 2015 count = wmm_param[6] & 0x0f;
2e249fc3
ST		 2016 /* -1 is the initial value of ifmgd->mu_edca_last_param_set.
2017 * if mu_edca was preset before and now it disappeared tell
2018 * the driver about it.
2019 */
2020 mu_edca_count = mu_edca ? mu_edca->mu_qos_info & 0x0f : -1;
2021 if (count == ifmgd->wmm_last_param_set &&
2022 mu_edca_count == ifmgd->mu_edca_last_param_set)
7d25745d 2023 return false;
46900298 2024 ifmgd->wmm_last_param_set = count;
2e249fc3 2025 ifmgd->mu_edca_last_param_set = mu_edca_count;
f0706e82
JB		 2026
2027 pos = wmm_param + 8;
2028 left = wmm_param_len - 8;
2029
2030 memset(&params, 0, sizeof(params));
2031
00e96dec 2032 sdata->wmm_acm = 0;
f0706e82
JB		 2033 for (; left >= 4; left -= 4, pos += 4) {
2034 int aci = (pos[0] >> 5) & 0x03;
2035 int acm = (pos[0] >> 4) & 0x01;
ab13315a 2036 bool uapsd = false;
f0706e82
JB		 2037
2038 switch (aci) {
0eeb59fe 2039 case 1: /* AC_BK */
2ed77ea6 2040 ac = IEEE80211_AC_BK;
988c0f72 2041 if (acm)
00e96dec 2042 sdata->wmm_acm |= BIT(1) | BIT(2); /* BK/- */
ab13315a
KV		 2043 if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BK)
2044 uapsd = true;
41cbb0f5
LC		 2045 params[ac].mu_edca = !!mu_edca;
2046 if (mu_edca)
2047 params[ac].mu_edca_param_rec = mu_edca->ac_bk;
f0706e82 2048 break;
0eeb59fe 2049 case 2: /* AC_VI */
2ed77ea6 2050 ac = IEEE80211_AC_VI;
988c0f72 2051 if (acm)
00e96dec 2052 sdata->wmm_acm |= BIT(4) | BIT(5); /* CL/VI */
ab13315a
KV		 2053 if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VI)
2054 uapsd = true;
41cbb0f5
LC		 2055 params[ac].mu_edca = !!mu_edca;
2056 if (mu_edca)
2057 params[ac].mu_edca_param_rec = mu_edca->ac_vi;
f0706e82 2058 break;
0eeb59fe 2059 case 3: /* AC_VO */
2ed77ea6 2060 ac = IEEE80211_AC_VO;
988c0f72 2061 if (acm)
00e96dec 2062 sdata->wmm_acm |= BIT(6) | BIT(7); /* VO/NC */
ab13315a
KV		 2063 if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VO)
2064 uapsd = true;
41cbb0f5
LC		 2065 params[ac].mu_edca = !!mu_edca;
2066 if (mu_edca)
2067 params[ac].mu_edca_param_rec = mu_edca->ac_vo;
f0706e82 2068 break;
0eeb59fe 2069 case 0: /* AC_BE */
f0706e82 2070 default:
2ed77ea6 2071 ac = IEEE80211_AC_BE;
988c0f72 2072 if (acm)
00e96dec 2073 sdata->wmm_acm |= BIT(0) | BIT(3); /* BE/EE */
ab13315a
KV		 2074 if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BE)
2075 uapsd = true;
41cbb0f5
LC		 2076 params[ac].mu_edca = !!mu_edca;
2077 if (mu_edca)
2078 params[ac].mu_edca_param_rec = mu_edca->ac_be;
f0706e82
JB		 2079 break;
2080 }
2081
2ed77ea6 2082 params[ac].aifs = pos[0] & 0x0f;
730a7550 2083
2ed77ea6 2084 if (params[ac].aifs < 2) {
730a7550
EG		 2085 sdata_info(sdata,
2086 "AP has invalid WMM params (AIFSN=%d for ACI %d), will use 2\n",
2ed77ea6
JB		 2087 params[ac].aifs, aci);
2088 params[ac].aifs = 2;
730a7550 2089 }
2ed77ea6
JB		 2090 params[ac].cw_max = ecw2cw((pos[1] & 0xf0) >> 4);
2091 params[ac].cw_min = ecw2cw(pos[1] & 0x0f);
2092 params[ac].txop = get_unaligned_le16(pos + 2);
2093 params[ac].acm = acm;
2094 params[ac].uapsd = uapsd;
ab13315a 2095
911a2648 2096 if (params[ac].cw_min == 0 ||
c470bdc1 2097 params[ac].cw_min > params[ac].cw_max) {
2ed77ea6
JB		 2098 sdata_info(sdata,
2099 "AP has invalid WMM params (CWmin/max=%d/%d for ACI %d), using defaults\n",
2100 params[ac].cw_min, params[ac].cw_max, aci);
2101 return false;
2102 }
e552af05 2103 ieee80211_regulatory_limit_wmm_params(sdata, &params[ac], ac);
2ed77ea6
JB		 2104 }
2105
05aaa5c9
BN		 2106 /* WMM specification requires all 4 ACIs. */
2107 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
2108 if (params[ac].cw_min == 0) {
2109 sdata_info(sdata,
2110 "AP has invalid WMM params (missing AC %d), using defaults\n",
2111 ac);
2112 return false;
2113 }
2114 }
2115
2ed77ea6 2116 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
bdcbd8e0 2117 mlme_dbg(sdata,
2ed77ea6
JB		 2118 "WMM AC=%d acm=%d aifs=%d cWmin=%d cWmax=%d txop=%d uapsd=%d, downgraded=%d\n",
2119 ac, params[ac].acm,
2120 params[ac].aifs, params[ac].cw_min, params[ac].cw_max,
2121 params[ac].txop, params[ac].uapsd,
2122 ifmgd->tx_tspec[ac].downgraded);
2123 sdata->tx_conf[ac] = params[ac];
2124 if (!ifmgd->tx_tspec[ac].downgraded &&
2125 drv_conf_tx(local, sdata, ac, &params[ac]))
bdcbd8e0 2126 sdata_err(sdata,
2ed77ea6
JB		 2127 "failed to set TX queue parameters for AC %d\n",
2128 ac);
f0706e82 2129 }
e1b3ec1a
SG		 2130
2131 /* enable WMM or activate new settings */
4ced3f74 2132 sdata->vif.bss_conf.qos = true;
7d25745d 2133 return true;
f0706e82
JB		 2134}
2135
925e64c3
SG		 2136static void __ieee80211_stop_poll(struct ieee80211_sub_if_data *sdata)
2137{
2138 lockdep_assert_held(&sdata->local->mtx);
2139
392b9ffb 2140 sdata->u.mgd.flags &= ~IEEE80211_STA_CONNECTION_POLL;
925e64c3
SG		 2141 ieee80211_run_deferred_scan(sdata->local);
2142}
2143
2144static void ieee80211_stop_poll(struct ieee80211_sub_if_data *sdata)
2145{
2146 mutex_lock(&sdata->local->mtx);
2147 __ieee80211_stop_poll(sdata);
2148 mutex_unlock(&sdata->local->mtx);
2149}
2150
7a5158ef
JB		 2151static u32 ieee80211_handle_bss_capability(struct ieee80211_sub_if_data *sdata,
2152 u16 capab, bool erp_valid, u8 erp)
5628221c 2153{
bda3933a 2154 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
21a8e9dd 2155 struct ieee80211_supported_band *sband;
471b3efd 2156 u32 changed = 0;
7a5158ef
JB		 2157 bool use_protection;
2158 bool use_short_preamble;
2159 bool use_short_slot;
2160
21a8e9dd
MSS		 2161 sband = ieee80211_get_sband(sdata);
2162 if (!sband)
2163 return changed;
2164
7a5158ef
JB		 2165 if (erp_valid) {
2166 use_protection = (erp & WLAN_ERP_USE_PROTECTION) != 0;
2167 use_short_preamble = (erp & WLAN_ERP_BARKER_PREAMBLE) == 0;
2168 } else {
2169 use_protection = false;
2170 use_short_preamble = !!(capab & WLAN_CAPABILITY_SHORT_PREAMBLE);
2171 }
2172
2173 use_short_slot = !!(capab & WLAN_CAPABILITY_SHORT_SLOT_TIME);
07c12d61
TM		 2174 if (sband->band == NL80211_BAND_5GHZ ||
2175 sband->band == NL80211_BAND_6GHZ)
43d35343 2176 use_short_slot = true;
5628221c 2177
471b3efd 2178 if (use_protection != bss_conf->use_cts_prot) {
471b3efd
JB		 2179 bss_conf->use_cts_prot = use_protection;
2180 changed |= BSS_CHANGED_ERP_CTS_PROT;
5628221c 2181 }
7e9ed188 2182
d43c7b37 2183 if (use_short_preamble != bss_conf->use_short_preamble) {
d43c7b37 2184 bss_conf->use_short_preamble = use_short_preamble;
471b3efd 2185 changed |= BSS_CHANGED_ERP_PREAMBLE;
7e9ed188 2186 }
d9430a32 2187
7a5158ef 2188 if (use_short_slot != bss_conf->use_short_slot) {
7a5158ef
JB		 2189 bss_conf->use_short_slot = use_short_slot;
2190 changed |= BSS_CHANGED_ERP_SLOT;
50c4afb9
JL		 2191 }
2192
2193 return changed;
2194}
2195
f698d856 2196static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata,
0c1ad2ca 2197 struct cfg80211_bss *cbss,
ae5eb026 2198 u32 bss_info_changed)
f0706e82 2199{
0c1ad2ca 2200 struct ieee80211_bss *bss = (void *)cbss->priv;
471b3efd 2201 struct ieee80211_local *local = sdata->local;
68542962 2202 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
d6f2da5b 2203
ae5eb026 2204 bss_info_changed |= BSS_CHANGED_ASSOC;
77fdaa12 2205 bss_info_changed |= ieee80211_handle_bss_capability(sdata,
50ae34a2 2206 bss_conf->assoc_capability, bss->has_erp_value, bss->erp_value);
21c0cbe7 2207
7ccc8bd7 2208 sdata->u.mgd.beacon_timeout = usecs_to_jiffies(ieee80211_tu_to_usec(
59c1ec2b 2209 beacon_loss_count * bss_conf->beacon_int));
7ccc8bd7 2210
0c1ad2ca
JB		 2211 sdata->u.mgd.associated = cbss;
2212 memcpy(sdata->u.mgd.bssid, cbss->bssid, ETH_ALEN);
f0706e82 2213
e8e4f528
JB		 2214 ieee80211_check_rate_mask(sdata);
2215
17e4ec14
JM		 2216 sdata->u.mgd.flags |= IEEE80211_STA_RESET_SIGNAL_AVE;
2217
b115b972
JD		 2218 if (sdata->vif.p2p ||
2219 sdata->vif.driver_flags & IEEE80211_VIF_GET_NOA_UPDATE) {
9caf0364 2220 const struct cfg80211_bss_ies *ies;
488dd7b5 2221
9caf0364
JB		 2222 rcu_read_lock();
2223 ies = rcu_dereference(cbss->ies);
2224 if (ies) {
9caf0364
JB		 2225 int ret;
2226
2227 ret = cfg80211_get_p2p_attr(
2228 ies->data, ies->len,
2229 IEEE80211_P2P_ATTR_ABSENCE_NOTICE,
67baf663
JD		 2230 (u8 *) &bss_conf->p2p_noa_attr,
2231 sizeof(bss_conf->p2p_noa_attr));
9caf0364 2232 if (ret >= 2) {
67baf663
JD		 2233 sdata->u.mgd.p2p_noa_index =
2234 bss_conf->p2p_noa_attr.index;
9caf0364 2235 bss_info_changed |= BSS_CHANGED_P2P_PS;
9caf0364 2236 }
488dd7b5 2237 }
9caf0364 2238 rcu_read_unlock();
488dd7b5
JB		 2239 }
2240
b291ba11 2241 /* just to be sure */
925e64c3 2242 ieee80211_stop_poll(sdata);
b291ba11 2243
9ac19a90 2244 ieee80211_led_assoc(local, 1);
9306102e 2245
989c6505 2246 if (sdata->u.mgd.have_beacon) {
826262c3
JB		 2247 /*
2248 * If the AP is buggy we may get here with no DTIM period
2249 * known, so assume it's 1 which is the only safe assumption
2250 * in that case, although if the TIM IE is broken powersave
2251 * probably just won't work at all.
2252 */
2253 bss_conf->dtim_period = sdata->u.mgd.dtim_period ?: 1;
817cee76 2254 bss_conf->beacon_rate = bss->beacon_rate;
989c6505 2255 bss_info_changed |= BSS_CHANGED_BEACON_INFO;
826262c3 2256 } else {
817cee76 2257 bss_conf->beacon_rate = NULL;
e5b900d2 2258 bss_conf->dtim_period = 0;
826262c3 2259 }
e5b900d2 2260
68542962 2261 bss_conf->assoc = 1;
9cef8737 2262
a97c13c3 2263 /* Tell the driver to monitor connection quality (if supported) */
ea086359 2264 if (sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI &&
68542962 2265 bss_conf->cqm_rssi_thold)
a97c13c3
JO		 2266 bss_info_changed |= BSS_CHANGED_CQM;
2267
68542962 2268 /* Enable ARP filtering */
0f19b41e 2269 if (bss_conf->arp_addr_cnt)
68542962 2270 bss_info_changed |= BSS_CHANGED_ARP_FILTER;
68542962 2271
ae5eb026 2272 ieee80211_bss_info_change_notify(sdata, bss_info_changed);
f0706e82 2273
056508dc 2274 mutex_lock(&local->iflist_mtx);
4a733ef1 2275 ieee80211_recalc_ps(local);
056508dc 2276 mutex_unlock(&local->iflist_mtx);
e0cb686f 2277
04ecd257 2278 ieee80211_recalc_smps(sdata);
ab095877
EP		 2279 ieee80211_recalc_ps_vif(sdata);
2280
9ac19a90 2281 netif_carrier_on(sdata->dev);
f0706e82
JB		 2282}
2283
e69e95db 2284static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata,
37ad3888
JB		 2285 u16 stype, u16 reason, bool tx,
2286 u8 *frame_buf)
aa458d17 2287{
46900298 2288 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
aa458d17 2289 struct ieee80211_local *local = sdata->local;
3cc5240b 2290 u32 changed = 0;
aa458d17 2291
8d61ffa5 2292 sdata_assert_lock(sdata);
77fdaa12 2293
37ad3888
JB		 2294 if (WARN_ON_ONCE(tx && !frame_buf))
2295 return;
2296
b291ba11
JB		 2297 if (WARN_ON(!ifmgd->associated))
2298 return;
2299
79543d8e
DS		 2300 ieee80211_stop_poll(sdata);
2301
77fdaa12 2302 ifmgd->associated = NULL;
aa458d17
TW		 2303 netif_carrier_off(sdata->dev);
2304
88bc40e8
EP		 2305 /*
2306 * if we want to get out of ps before disassoc (why?) we have
2307 * to do it before sending disassoc, as otherwise the null-packet
2308 * won't be valid.
2309 */
2310 if (local->hw.conf.flags & IEEE80211_CONF_PS) {
2311 local->hw.conf.flags &= ~IEEE80211_CONF_PS;
2312 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2313 }
2314 local->ps_sdata = NULL;
2315
ab095877
EP		 2316 /* disable per-vif ps */
2317 ieee80211_recalc_ps_vif(sdata);
2318
14f2ae83
EG		 2319 /* make sure ongoing transmission finishes */
2320 synchronize_net();
2321
3b24f4c6
EG		 2322 /*
2323 * drop any frame before deauth/disassoc, this can be data or
2324 * management frame. Since we are disconnecting, we should not
2325 * insist sending these frames which can take time and delay
2326 * the disconnection and possible the roaming.
2327 */
f823981e 2328 if (tx)
3b24f4c6 2329 ieee80211_flush_queues(local, sdata, true);
f823981e 2330
37ad3888 2331 /* deauthenticate/disassociate now */
94ba9271 2332 if (tx || frame_buf) {
94ba9271
IP		 2333 /*
2334 * In multi channel scenarios guarantee that the virtual
2335 * interface is granted immediate airtime to transmit the
2336 * deauthentication frame by calling mgd_prepare_tx, if the
2337 * driver requested so.
2338 */
2339 if (ieee80211_hw_check(&local->hw, DEAUTH_NEED_MGD_TX_PREP) &&
2340 !ifmgd->have_beacon)
d4e36e55 2341 drv_mgd_prepare_tx(sdata->local, sdata, 0);
94ba9271 2342
4b08d1b6
JB		 2343 ieee80211_send_deauth_disassoc(sdata, ifmgd->bssid,
2344 ifmgd->bssid, stype, reason,
2345 tx, frame_buf);
94ba9271 2346 }
37ad3888 2347
3b24f4c6 2348 /* flush out frame - make sure the deauth was actually sent */
37ad3888 2349 if (tx)
3b24f4c6 2350 ieee80211_flush_queues(local, sdata, false);
37ad3888 2351
88a9e31c 2352 /* clear bssid only after building the needed mgmt frames */
c84a67a2 2353 eth_zero_addr(ifmgd->bssid);
88a9e31c 2354
37ad3888 2355 /* remove AP and TDLS peers */
d34ba216 2356 sta_info_flush(sdata);
37ad3888
JB		 2357
2358 /* finally reset all BSS / config parameters */
f5e5bf25
TW		 2359 changed |= ieee80211_reset_erp_info(sdata);
2360
f5e5bf25 2361 ieee80211_led_assoc(local, 0);
ae5eb026
JB		 2362 changed |= BSS_CHANGED_ASSOC;
2363 sdata->vif.bss_conf.assoc = false;
f5e5bf25 2364
67baf663
JD		 2365 ifmgd->p2p_noa_index = -1;
2366 memset(&sdata->vif.bss_conf.p2p_noa_attr, 0,
2367 sizeof(sdata->vif.bss_conf.p2p_noa_attr));
488dd7b5 2368
dd5ecfea 2369 /* on the next assoc, re-program HT/VHT parameters */
ef96a842
BG		 2370 memset(&ifmgd->ht_capa, 0, sizeof(ifmgd->ht_capa));
2371 memset(&ifmgd->ht_capa_mask, 0, sizeof(ifmgd->ht_capa_mask));
dd5ecfea
JB		 2372 memset(&ifmgd->vht_capa, 0, sizeof(ifmgd->vht_capa));
2373 memset(&ifmgd->vht_capa_mask, 0, sizeof(ifmgd->vht_capa_mask));
23a1f8d4
SS		 2374
2375 /* reset MU-MIMO ownership and group data */
2376 memset(sdata->vif.bss_conf.mu_group.membership, 0,
2377 sizeof(sdata->vif.bss_conf.mu_group.membership));
2378 memset(sdata->vif.bss_conf.mu_group.position, 0,
2379 sizeof(sdata->vif.bss_conf.mu_group.position));
2380 changed |= BSS_CHANGED_MU_GROUPS;
b5a33d52 2381 sdata->vif.mu_mimo_owner = false;
413ad50a 2382
1ea6f9c0 2383 sdata->ap_power_level = IEEE80211_UNSET_POWER_LEVEL;
a8302de9 2384
520eb820
KV		 2385 del_timer_sync(&local->dynamic_ps_timer);
2386 cancel_work_sync(&local->dynamic_ps_enable_work);
2387
68542962 2388 /* Disable ARP filtering */
0f19b41e 2389 if (sdata->vif.bss_conf.arp_addr_cnt)
68542962 2390 changed |= BSS_CHANGED_ARP_FILTER;
68542962 2391
3abead59
JB		 2392 sdata->vif.bss_conf.qos = false;
2393 changed |= BSS_CHANGED_QOS;
2394
0aaffa9b
JB		 2395 /* The BSSID (not really interesting) and HT changed */
2396 changed |= BSS_CHANGED_BSSID | BSS_CHANGED_HT;
ae5eb026 2397 ieee80211_bss_info_change_notify(sdata, changed);
8e268e47 2398
3abead59 2399 /* disassociated - set to defaults now */
cec66283 2400 ieee80211_set_wmm_default(sdata, false, false);
3abead59 2401
b9dcf712
JB		 2402 del_timer_sync(&sdata->u.mgd.conn_mon_timer);
2403 del_timer_sync(&sdata->u.mgd.bcn_mon_timer);
2404 del_timer_sync(&sdata->u.mgd.timer);
2405 del_timer_sync(&sdata->u.mgd.chswitch_timer);
2d9957cc 2406
826262c3 2407 sdata->vif.bss_conf.dtim_period = 0;
817cee76
AB		 2408 sdata->vif.bss_conf.beacon_rate = NULL;
2409
989c6505 2410 ifmgd->have_beacon = false;
826262c3 2411
028e8da0 2412 ifmgd->flags = 0;
34a3740d 2413 mutex_lock(&local->mtx);
028e8da0 2414 ieee80211_vif_release_channel(sdata);
59af6928
MK		 2415
2416 sdata->vif.csa_active = false;
0c21e632 2417 ifmgd->csa_waiting_bcn = false;
f84eaa10 2418 ifmgd->csa_ignored_same_chan = false;
a46992b4
LC		 2419 if (sdata->csa_block_tx) {
2420 ieee80211_wake_vif_queues(local, sdata,
2421 IEEE80211_QUEUE_STOP_REASON_CSA);
2422 sdata->csa_block_tx = false;
2423 }
34a3740d 2424 mutex_unlock(&local->mtx);
2475b1cc 2425
02219b3a
JB		 2426 /* existing TX TSPEC sessions no longer exist */
2427 memset(ifmgd->tx_tspec, 0, sizeof(ifmgd->tx_tspec));
2428 cancel_delayed_work_sync(&ifmgd->tx_tspec_wk);
2429
2475b1cc 2430 sdata->encrypt_headroom = IEEE80211_ENCRYPT_HEADROOM;
aa458d17 2431}
f0706e82 2432
3cf335d5
KV		 2433void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
2434 struct ieee80211_hdr *hdr)
2435{
2436 /*
2437 * We can postpone the mgd.timer whenever receiving unicast frames
2438 * from AP because we know that the connection is working both ways
2439 * at that time. But multicast frames (and hence also beacons) must
2440 * be ignored here, because we need to trigger the timer during
b291ba11
JB		 2441 * data idle periods for sending the periodic probe request to the
2442 * AP we're connected to.
3cf335d5 2443 */
b291ba11
JB		 2444 if (is_multicast_ether_addr(hdr->addr1))
2445 return;
2446
be099e82 2447 ieee80211_sta_reset_conn_monitor(sdata);
3cf335d5 2448}
f0706e82 2449
4e5ff376
FF		 2450static void ieee80211_reset_ap_probe(struct ieee80211_sub_if_data *sdata)
2451{
2452 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
133d40f9 2453 struct ieee80211_local *local = sdata->local;
4e5ff376 2454
133d40f9 2455 mutex_lock(&local->mtx);
392b9ffb
SG		 2456 if (!(ifmgd->flags & IEEE80211_STA_CONNECTION_POLL))
2457 goto out;
4e5ff376 2458
925e64c3 2459 __ieee80211_stop_poll(sdata);
133d40f9
SG		 2460
2461 mutex_lock(&local->iflist_mtx);
4a733ef1 2462 ieee80211_recalc_ps(local);
133d40f9 2463 mutex_unlock(&local->iflist_mtx);
4e5ff376 2464
30686bf7 2465 if (ieee80211_hw_check(&sdata->local->hw, CONNECTION_MONITOR))
133d40f9 2466 goto out;
4e5ff376
FF		 2467
2468 /*
2469 * We've received a probe response, but are not sure whether
2470 * we have or will be receiving any beacons or data, so let's
2471 * schedule the timers again, just in case.
2472 */
2473 ieee80211_sta_reset_beacon_monitor(sdata);
2474
2475 mod_timer(&ifmgd->conn_mon_timer,
2476 round_jiffies_up(jiffies +
2477 IEEE80211_CONNECTION_IDLE_TIME));
133d40f9 2478out:
133d40f9 2479 mutex_unlock(&local->mtx);
4e5ff376
FF		 2480}
2481
02219b3a
JB		 2482static void ieee80211_sta_tx_wmm_ac_notify(struct ieee80211_sub_if_data *sdata,
2483 struct ieee80211_hdr *hdr,
2484 u16 tx_time)
2485{
2486 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
a1f2ba04 2487 u16 tid = ieee80211_get_tid(hdr);
02219b3a
JB		 2488 int ac = ieee80211_ac_from_tid(tid);
2489 struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac];
2490 unsigned long now = jiffies;
2491
2492 if (likely(!tx_tspec->admitted_time))
2493 return;
2494
2495 if (time_after(now, tx_tspec->time_slice_start + HZ)) {
2496 tx_tspec->consumed_tx_time = 0;
2497 tx_tspec->time_slice_start = now;
2498
2499 if (tx_tspec->downgraded) {
2500 tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE;
2501 schedule_delayed_work(&ifmgd->tx_tspec_wk, 0);
2502 }
2503 }
2504
2505 if (tx_tspec->downgraded)
2506 return;
2507
2508 tx_tspec->consumed_tx_time += tx_time;
2509
2510 if (tx_tspec->consumed_tx_time >= tx_tspec->admitted_time) {
2511 tx_tspec->downgraded = true;
2512 tx_tspec->action = TX_TSPEC_ACTION_DOWNGRADE;
2513 schedule_delayed_work(&ifmgd->tx_tspec_wk, 0);
2514 }
2515}
2516
4e5ff376 2517void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
02219b3a 2518 struct ieee80211_hdr *hdr, bool ack, u16 tx_time)
4e5ff376 2519{
02219b3a
JB		 2520 ieee80211_sta_tx_wmm_ac_notify(sdata, hdr, tx_time);
2521
75706d0e 2522 if (!ieee80211_is_data(hdr->frame_control))
4e5ff376
FF		 2523 return;
2524
30b2f0be 2525 if (ieee80211_is_any_nullfunc(hdr->frame_control) &&
4e5ff376 2526 sdata->u.mgd.probe_send_count > 0) {
04ac3c0e 2527 if (ack)
cab1c7fd 2528 ieee80211_sta_reset_conn_monitor(sdata);
04ac3c0e
FF		 2529 else
2530 sdata->u.mgd.nullfunc_failed = true;
4e5ff376 2531 ieee80211_queue_work(&sdata->local->hw, &sdata->work);
cab1c7fd 2532 return;
4e5ff376 2533 }
cab1c7fd
WD		 2534
2535 if (ack)
2536 ieee80211_sta_reset_conn_monitor(sdata);
4e5ff376
FF		 2537}
2538
45ad6834
JB		 2539static void ieee80211_mlme_send_probe_req(struct ieee80211_sub_if_data *sdata,
2540 const u8 *src, const u8 *dst,
2541 const u8 *ssid, size_t ssid_len,
2542 struct ieee80211_channel *channel)
2543{
2544 struct sk_buff *skb;
2545
2546 skb = ieee80211_build_probe_req(sdata, src, dst, (u32)-1, channel,
2547 ssid, ssid_len, NULL, 0,
2548 IEEE80211_PROBE_FLAG_DIRECTED);
2549 if (skb)
2550 ieee80211_tx_skb(sdata, skb);
2551}
2552
a43abf29
ML		 2553static void ieee80211_mgd_probe_ap_send(struct ieee80211_sub_if_data *sdata)
2554{
2555 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2556 const u8 *ssid;
f01a067d 2557 u8 *dst = ifmgd->associated->bssid;
180205bd 2558 u8 unicast_limit = max(1, max_probe_tries - 3);
49ddf8e6 2559 struct sta_info *sta;
f01a067d
LR		 2560
2561 /*
2562 * Try sending broadcast probe requests for the last three
2563 * probe requests after the first ones failed since some
2564 * buggy APs only support broadcast probe requests.
2565 */
2566 if (ifmgd->probe_send_count >= unicast_limit)
2567 dst = NULL;
a43abf29 2568
4e5ff376
FF		 2569 /*
2570 * When the hardware reports an accurate Tx ACK status, it's
2571 * better to send a nullfunc frame instead of a probe request,
2572 * as it will kick us off the AP quickly if we aren't associated
2573 * anymore. The timeout will be reset if the frame is ACKed by
2574 * the AP.
2575 */
992e68bf
SD		 2576 ifmgd->probe_send_count++;
2577
49ddf8e6
JB		 2578 if (dst) {
2579 mutex_lock(&sdata->local->sta_mtx);
2580 sta = sta_info_get(sdata, dst);
2581 if (!WARN_ON(!sta))
2582 ieee80211_check_fast_rx(sta);
2583 mutex_unlock(&sdata->local->sta_mtx);
2584 }
2585
30686bf7 2586 if (ieee80211_hw_check(&sdata->local->hw, REPORTS_TX_ACK_STATUS)) {
04ac3c0e 2587 ifmgd->nullfunc_failed = false;
f39b07fd
SB		 2588 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HE))
2589 ifmgd->probe_send_count--;
2590 else
2591 ieee80211_send_nullfunc(sdata->local, sdata, false);
04ac3c0e 2592 } else {
88c868c4
SG		 2593 int ssid_len;
2594
9caf0364 2595 rcu_read_lock();
4e5ff376 2596 ssid = ieee80211_bss_get_ie(ifmgd->associated, WLAN_EID_SSID);
88c868c4
SG		 2597 if (WARN_ON_ONCE(ssid == NULL))
2598 ssid_len = 0;
2599 else
2600 ssid_len = ssid[1];
2601
45ad6834
JB		 2602 ieee80211_mlme_send_probe_req(sdata, sdata->vif.addr, dst,
2603 ssid + 2, ssid_len,
2604 ifmgd->associated->channel);
9caf0364 2605 rcu_read_unlock();
4e5ff376 2606 }
a43abf29 2607
180205bd 2608 ifmgd->probe_timeout = jiffies + msecs_to_jiffies(probe_wait_ms);
8d61ffa5 2609 run_again(sdata, ifmgd->probe_timeout);
a43abf29
ML		 2610}
2611
b291ba11
JB		 2612static void ieee80211_mgd_probe_ap(struct ieee80211_sub_if_data *sdata,
2613 bool beacon)
04de8381 2614{
04de8381 2615 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
b291ba11 2616 bool already = false;
34bfc411 2617
9607e6b6 2618 if (!ieee80211_sdata_running(sdata))
0e2b6286
JB		 2619 return;
2620
8d61ffa5 2621 sdata_lock(sdata);
77fdaa12
JB		 2622
2623 if (!ifmgd->associated)
2624 goto out;
2625
133d40f9
SG		 2626 mutex_lock(&sdata->local->mtx);
2627
2628 if (sdata->local->tmp_channel || sdata->local->scanning) {
2629 mutex_unlock(&sdata->local->mtx);
2630 goto out;
2631 }
2632
a13fbe54 2633 if (beacon) {
bdcbd8e0 2634 mlme_dbg_ratelimited(sdata,
59c1ec2b
BG		 2635 "detected beacon loss from AP (missed %d beacons) - probing\n",
2636 beacon_loss_count);
bdcbd8e0 2637
98f03342 2638 ieee80211_cqm_beacon_loss_notify(&sdata->vif, GFP_KERNEL);
a13fbe54 2639 }
04de8381 2640
b291ba11
JB		 2641 /*
2642 * The driver/our work has already reported this event or the
2643 * connection monitoring has kicked in and we have already sent
2644 * a probe request. Or maybe the AP died and the driver keeps
2645 * reporting until we disassociate...
2646 *
2647 * In either case we have to ignore the current call to this
2648 * function (except for setting the correct probe reason bit)
2649 * because otherwise we would reset the timer every time and
2650 * never check whether we received a probe response!
2651 */
392b9ffb 2652 if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL)
b291ba11
JB		 2653 already = true;
2654
12b5f34d
EP		 2655 ifmgd->flags |= IEEE80211_STA_CONNECTION_POLL;
2656
133d40f9
SG		 2657 mutex_unlock(&sdata->local->mtx);
2658
b291ba11
JB		 2659 if (already)
2660 goto out;
2661
4e751843 2662 mutex_lock(&sdata->local->iflist_mtx);
4a733ef1 2663 ieee80211_recalc_ps(sdata->local);
4e751843
JB		 2664 mutex_unlock(&sdata->local->iflist_mtx);
2665
a43abf29
ML		 2666 ifmgd->probe_send_count = 0;
2667 ieee80211_mgd_probe_ap_send(sdata);
77fdaa12 2668 out:
8d61ffa5 2669 sdata_unlock(sdata);
04de8381
KV		 2670}
2671
a619a4c0
JO		 2672struct sk_buff *ieee80211_ap_probereq_get(struct ieee80211_hw *hw,
2673 struct ieee80211_vif *vif)
2674{
2675 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2676 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
d9b3b28b 2677 struct cfg80211_bss *cbss;
a619a4c0
JO		 2678 struct sk_buff *skb;
2679 const u8 *ssid;
88c868c4 2680 int ssid_len;
a619a4c0
JO		 2681
2682 if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
2683 return NULL;
2684
8d61ffa5 2685 sdata_assert_lock(sdata);
a619a4c0 2686
d9b3b28b
EP		 2687 if (ifmgd->associated)
2688 cbss = ifmgd->associated;
2689 else if (ifmgd->auth_data)
2690 cbss = ifmgd->auth_data->bss;
2691 else if (ifmgd->assoc_data)
2692 cbss = ifmgd->assoc_data->bss;
2693 else
a619a4c0
JO		 2694 return NULL;
2695
9caf0364 2696 rcu_read_lock();
d9b3b28b 2697 ssid = ieee80211_bss_get_ie(cbss, WLAN_EID_SSID);
4152561f
WD		 2698 if (WARN_ONCE(!ssid || ssid[1] > IEEE80211_MAX_SSID_LEN,
2699 "invalid SSID element (len=%d)", ssid ? ssid[1] : -1))
88c868c4
SG		 2700 ssid_len = 0;
2701 else
2702 ssid_len = ssid[1];
2703
a344d677 2704 skb = ieee80211_build_probe_req(sdata, sdata->vif.addr, cbss->bssid,
55de908a 2705 (u32) -1, cbss->channel,
6b77863b 2706 ssid + 2, ssid_len,
00387f32 2707 NULL, 0, IEEE80211_PROBE_FLAG_DIRECTED);
9caf0364 2708 rcu_read_unlock();
a619a4c0
JO		 2709
2710 return skb;
2711}
2712EXPORT_SYMBOL(ieee80211_ap_probereq_get);
2713
a90faa9d
EG		 2714static void ieee80211_report_disconnect(struct ieee80211_sub_if_data *sdata,
2715 const u8 *buf, size_t len, bool tx,
2716 u16 reason)
2717{
2718 struct ieee80211_event event = {
2719 .type = MLME_EVENT,
2720 .u.mlme.data = tx ? DEAUTH_TX_EVENT : DEAUTH_RX_EVENT,
2721 .u.mlme.reason = reason,
2722 };
2723
2724 if (tx)
2725 cfg80211_tx_mlme_mgmt(sdata->dev, buf, len);
2726 else
2727 cfg80211_rx_mlme_mgmt(sdata->dev, buf, len);
2728
2729 drv_event_callback(sdata->local, sdata, &event);
2730}
2731
eef9e54c 2732static void __ieee80211_disconnect(struct ieee80211_sub_if_data *sdata)
1e4dcd01 2733{
59af6928 2734 struct ieee80211_local *local = sdata->local;
1e4dcd01 2735 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
6ae16775 2736 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
6c18b27d 2737 bool tx;
1e4dcd01 2738
8d61ffa5 2739 sdata_lock(sdata);
1e4dcd01 2740 if (!ifmgd->associated) {
8d61ffa5 2741 sdata_unlock(sdata);
1e4dcd01
JO		 2742 return;
2743 }
2744
6c18b27d
EG		 2745 tx = !sdata->csa_block_tx;
2746
20eb7ea9
DS		 2747 /* AP is probably out of range (or not reachable for another reason) so
2748 * remove the bss struct for that AP.
2749 */
2750 cfg80211_unlink_bss(local->hw.wiphy, ifmgd->associated);
2751
37ad3888
JB		 2752 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
2753 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY,
6c18b27d 2754 tx, frame_buf);
59af6928 2755 mutex_lock(&local->mtx);
7578d575 2756 sdata->vif.csa_active = false;
0c21e632 2757 ifmgd->csa_waiting_bcn = false;
a46992b4
LC		 2758 if (sdata->csa_block_tx) {
2759 ieee80211_wake_vif_queues(local, sdata,
2760 IEEE80211_QUEUE_STOP_REASON_CSA);
2761 sdata->csa_block_tx = false;
2762 }
59af6928 2763 mutex_unlock(&local->mtx);
7da7cc1d 2764
6c18b27d 2765 ieee80211_report_disconnect(sdata, frame_buf, sizeof(frame_buf), tx,
a90faa9d
EG		 2766 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY);
2767
8d61ffa5 2768 sdata_unlock(sdata);
1e4dcd01
JO		 2769}
2770
cc74c0c7 2771static void ieee80211_beacon_connection_loss_work(struct work_struct *work)
b291ba11
JB		 2772{
2773 struct ieee80211_sub_if_data *sdata =
2774 container_of(work, struct ieee80211_sub_if_data,
1e4dcd01 2775 u.mgd.beacon_connection_loss_work);
a85e1d55 2776 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
a85e1d55 2777
976bd9ef
JB		 2778 if (ifmgd->associated)
2779 ifmgd->beacon_loss_count++;
b291ba11 2780
682bd38b 2781 if (ifmgd->connection_loss) {
882a7c69
JB		 2782 sdata_info(sdata, "Connection to AP %pM lost\n",
2783 ifmgd->bssid);
eef9e54c 2784 __ieee80211_disconnect(sdata);
882a7c69 2785 } else {
1e4dcd01 2786 ieee80211_mgd_probe_ap(sdata, true);
882a7c69
JB		 2787 }
2788}
2789
2790static void ieee80211_csa_connection_drop_work(struct work_struct *work)
2791{
2792 struct ieee80211_sub_if_data *sdata =
2793 container_of(work, struct ieee80211_sub_if_data,
2794 u.mgd.csa_connection_drop_work);
2795
eef9e54c 2796 __ieee80211_disconnect(sdata);
b291ba11
JB		 2797}
2798
04de8381
KV		 2799void ieee80211_beacon_loss(struct ieee80211_vif *vif)
2800{
2801 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
1e4dcd01 2802 struct ieee80211_hw *hw = &sdata->local->hw;
04de8381 2803
b5878a2d
JB		 2804 trace_api_beacon_loss(sdata);
2805
682bd38b 2806 sdata->u.mgd.connection_loss = false;
1e4dcd01 2807 ieee80211_queue_work(hw, &sdata->u.mgd.beacon_connection_loss_work);
04de8381
KV		 2808}
2809EXPORT_SYMBOL(ieee80211_beacon_loss);
2810
1e4dcd01
JO		 2811void ieee80211_connection_loss(struct ieee80211_vif *vif)
2812{
2813 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2814 struct ieee80211_hw *hw = &sdata->local->hw;
2815
b5878a2d
JB		 2816 trace_api_connection_loss(sdata);
2817
682bd38b 2818 sdata->u.mgd.connection_loss = true;
1e4dcd01
JO		 2819 ieee80211_queue_work(hw, &sdata->u.mgd.beacon_connection_loss_work);
2820}
2821EXPORT_SYMBOL(ieee80211_connection_loss);
2822
2823
66e67e41
JB		 2824static void ieee80211_destroy_auth_data(struct ieee80211_sub_if_data *sdata,
2825 bool assoc)
2826{
2827 struct ieee80211_mgd_auth_data *auth_data = sdata->u.mgd.auth_data;
2828
8d61ffa5 2829 sdata_assert_lock(sdata);
66e67e41 2830
66e67e41 2831 if (!assoc) {
c1e140bf
EG		 2832 /*
2833 * we are not authenticated yet, the only timer that could be
2834 * running is the timeout for the authentication response which
2835 * which is not relevant anymore.
2836 */
2837 del_timer_sync(&sdata->u.mgd.timer);
66e67e41
JB		 2838 sta_info_destroy_addr(sdata, auth_data->bss->bssid);
2839
c84a67a2 2840 eth_zero_addr(sdata->u.mgd.bssid);
66e67e41 2841 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID);
028e8da0 2842 sdata->u.mgd.flags = 0;
34a3740d 2843 mutex_lock(&sdata->local->mtx);
55de908a 2844 ieee80211_vif_release_channel(sdata);
34a3740d 2845 mutex_unlock(&sdata->local->mtx);
66e67e41
JB		 2846 }
2847
5b112d3d 2848 cfg80211_put_bss(sdata->local->hw.wiphy, auth_data->bss);
66e67e41
JB		 2849 kfree(auth_data);
2850 sdata->u.mgd.auth_data = NULL;
2851}
2852
c9c99f89 2853static void ieee80211_destroy_assoc_data(struct ieee80211_sub_if_data *sdata,
e6f462df 2854 bool assoc, bool abandon)
c9c99f89
JB		 2855{
2856 struct ieee80211_mgd_assoc_data *assoc_data = sdata->u.mgd.assoc_data;
2857
2858 sdata_assert_lock(sdata);
2859
2860 if (!assoc) {
2861 /*
2862 * we are not associated yet, the only timer that could be
2863 * running is the timeout for the association response which
2864 * which is not relevant anymore.
2865 */
2866 del_timer_sync(&sdata->u.mgd.timer);
2867 sta_info_destroy_addr(sdata, assoc_data->bss->bssid);
2868
2869 eth_zero_addr(sdata->u.mgd.bssid);
2870 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID);
2871 sdata->u.mgd.flags = 0;
b5a33d52
SS		 2872 sdata->vif.mu_mimo_owner = false;
2873
c9c99f89
JB		 2874 mutex_lock(&sdata->local->mtx);
2875 ieee80211_vif_release_channel(sdata);
2876 mutex_unlock(&sdata->local->mtx);
e6f462df
JB		 2877
2878 if (abandon)
2879 cfg80211_abandon_assoc(sdata->dev, assoc_data->bss);
c9c99f89
JB		 2880 }
2881
2882 kfree(assoc_data);
2883 sdata->u.mgd.assoc_data = NULL;
2884}
2885
66e67e41
JB		 2886static void ieee80211_auth_challenge(struct ieee80211_sub_if_data *sdata,
2887 struct ieee80211_mgmt *mgmt, size_t len)
2888{
1672c0e3 2889 struct ieee80211_local *local = sdata->local;
66e67e41
JB		 2890 struct ieee80211_mgd_auth_data *auth_data = sdata->u.mgd.auth_data;
2891 u8 *pos;
2892 struct ieee802_11_elems elems;
1672c0e3 2893 u32 tx_flags = 0;
66e67e41
JB		 2894
2895 pos = mgmt->u.auth.variable;
4abb52a4
SS		 2896 ieee802_11_parse_elems(pos, len - (pos - (u8 *)mgmt), false, &elems,
2897 mgmt->bssid, auth_data->bss->bssid);
66e67e41
JB		 2898 if (!elems.challenge)
2899 return;
2900 auth_data->expected_transaction = 4;
d4e36e55 2901 drv_mgd_prepare_tx(sdata->local, sdata, 0);
30686bf7 2902 if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS))
1672c0e3
JB		 2903 tx_flags = IEEE80211_TX_CTL_REQ_TX_STATUS |
2904 IEEE80211_TX_INTFL_MLME_CONN_TX;
700e8ea6 2905 ieee80211_send_auth(sdata, 3, auth_data->algorithm, 0,
66e67e41
JB		 2906 elems.challenge - 2, elems.challenge_len + 2,
2907 auth_data->bss->bssid, auth_data->bss->bssid,
2908 auth_data->key, auth_data->key_len,
1672c0e3 2909 auth_data->key_idx, tx_flags);
66e67e41
JB		 2910}
2911
fc107a93
JM		 2912static bool ieee80211_mark_sta_auth(struct ieee80211_sub_if_data *sdata,
2913 const u8 *bssid)
2914{
efb543e6 2915 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
fc107a93 2916 struct sta_info *sta;
33483a6b 2917 bool result = true;
fc107a93 2918
efb543e6
JM		 2919 sdata_info(sdata, "authenticated\n");
2920 ifmgd->auth_data->done = true;
2921 ifmgd->auth_data->timeout = jiffies + IEEE80211_AUTH_WAIT_ASSOC;
2922 ifmgd->auth_data->timeout_started = true;
2923 run_again(sdata, ifmgd->auth_data->timeout);
2924
fc107a93
JM		 2925 /* move station state to auth */
2926 mutex_lock(&sdata->local->sta_mtx);
2927 sta = sta_info_get(sdata, bssid);
2928 if (!sta) {
2929 WARN_ONCE(1, "%s: STA %pM not found", sdata->name, bssid);
33483a6b
WY		 2930 result = false;
2931 goto out;
fc107a93
JM		 2932 }
2933 if (sta_info_move_state(sta, IEEE80211_STA_AUTH)) {
2934 sdata_info(sdata, "failed moving %pM to auth\n", bssid);
33483a6b
WY		 2935 result = false;
2936 goto out;
fc107a93 2937 }
fc107a93 2938
33483a6b
WY		 2939out:
2940 mutex_unlock(&sdata->local->sta_mtx);
2941 return result;
fc107a93
JM		 2942}
2943
8d61ffa5
JB		 2944static void ieee80211_rx_mgmt_auth(struct ieee80211_sub_if_data *sdata,
2945 struct ieee80211_mgmt *mgmt, size_t len)
66e67e41
JB		 2946{
2947 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2948 u8 bssid[ETH_ALEN];
2949 u16 auth_alg, auth_transaction, status_code;
a9409093
EG		 2950 struct ieee80211_event event = {
2951 .type = MLME_EVENT,
2952 .u.mlme.data = AUTH_EVENT,
2953 };
66e67e41 2954
8d61ffa5 2955 sdata_assert_lock(sdata);
66e67e41
JB		 2956
2957 if (len < 24 + 6)
8d61ffa5 2958 return;
66e67e41
JB		 2959
2960 if (!ifmgd->auth_data || ifmgd->auth_data->done)
8d61ffa5 2961 return;
66e67e41
JB		 2962
2963 memcpy(bssid, ifmgd->auth_data->bss->bssid, ETH_ALEN);
2964
b203ca39 2965 if (!ether_addr_equal(bssid, mgmt->bssid))
8d61ffa5 2966 return;
66e67e41
JB		 2967
2968 auth_alg = le16_to_cpu(mgmt->u.auth.auth_alg);
2969 auth_transaction = le16_to_cpu(mgmt->u.auth.auth_transaction);
2970 status_code = le16_to_cpu(mgmt->u.auth.status_code);
2971
2972 if (auth_alg != ifmgd->auth_data->algorithm ||
efb543e6
JM		 2973 (auth_alg != WLAN_AUTH_SAE &&
2974 auth_transaction != ifmgd->auth_data->expected_transaction) ||
2975 (auth_alg == WLAN_AUTH_SAE &&
2976 (auth_transaction < ifmgd->auth_data->expected_transaction ||
2977 auth_transaction > 2))) {
0f4126e8
JM		 2978 sdata_info(sdata, "%pM unexpected authentication state: alg %d (expected %d) transact %d (expected %d)\n",
2979 mgmt->sa, auth_alg, ifmgd->auth_data->algorithm,
2980 auth_transaction,
2981 ifmgd->auth_data->expected_transaction);
8d61ffa5 2982 return;
0f4126e8 2983 }
66e67e41
JB		 2984
2985 if (status_code != WLAN_STATUS_SUCCESS) {
a4055e74
AO		 2986 cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len);
2987
2988 if (auth_alg == WLAN_AUTH_SAE &&
2989 status_code == WLAN_STATUS_ANTI_CLOG_REQUIRED)
2990 return;
2991
bdcbd8e0
JB		 2992 sdata_info(sdata, "%pM denied authentication (status %d)\n",
2993 mgmt->sa, status_code);
dac211ec 2994 ieee80211_destroy_auth_data(sdata, false);
a9409093
EG		 2995 event.u.mlme.status = MLME_DENIED;
2996 event.u.mlme.reason = status_code;
2997 drv_event_callback(sdata->local, sdata, &event);
8d61ffa5 2998 return;
66e67e41
JB		 2999 }
3000
3001 switch (ifmgd->auth_data->algorithm) {
3002 case WLAN_AUTH_OPEN:
3003 case WLAN_AUTH_LEAP:
3004 case WLAN_AUTH_FT:
6b8ece3a 3005 case WLAN_AUTH_SAE:
dbc0c2cb
JM		 3006 case WLAN_AUTH_FILS_SK:
3007 case WLAN_AUTH_FILS_SK_PFS:
3008 case WLAN_AUTH_FILS_PK:
66e67e41
JB		 3009 break;
3010 case WLAN_AUTH_SHARED_KEY:
3011 if (ifmgd->auth_data->expected_transaction != 4) {
3012 ieee80211_auth_challenge(sdata, mgmt, len);
3013 /* need another frame */
8d61ffa5 3014 return;
66e67e41
JB		 3015 }
3016 break;
3017 default:
3018 WARN_ONCE(1, "invalid auth alg %d",
3019 ifmgd->auth_data->algorithm);
8d61ffa5 3020 return;
66e67e41
JB		 3021 }
3022
a9409093
EG		 3023 event.u.mlme.status = MLME_SUCCESS;
3024 drv_event_callback(sdata->local, sdata, &event);
efb543e6
JM		 3025 if (ifmgd->auth_data->algorithm != WLAN_AUTH_SAE ||
3026 (auth_transaction == 2 &&
3027 ifmgd->auth_data->expected_transaction == 2)) {
3028 if (!ieee80211_mark_sta_auth(sdata, bssid))
0daa63ed 3029 return; /* ignore frame -- wait for timeout */
efb543e6
JM		 3030 } else if (ifmgd->auth_data->algorithm == WLAN_AUTH_SAE &&
3031 auth_transaction == 2) {
3032 sdata_info(sdata, "SAE peer confirmed\n");
3033 ifmgd->auth_data->peer_confirmed = true;
6b8ece3a
JM		 3034 }
3035
6ff57cf8 3036 cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len);
66e67e41
JB		 3037}
3038
dfa1ad29
CO		 3039#define case_WLAN(type) \
3040 case WLAN_REASON_##type: return #type
3041
79c92ca4 3042const char *ieee80211_get_reason_code_string(u16 reason_code)
dfa1ad29
CO		 3043{
3044 switch (reason_code) {
3045 case_WLAN(UNSPECIFIED);
3046 case_WLAN(PREV_AUTH_NOT_VALID);
3047 case_WLAN(DEAUTH_LEAVING);
3048 case_WLAN(DISASSOC_DUE_TO_INACTIVITY);
3049 case_WLAN(DISASSOC_AP_BUSY);
3050 case_WLAN(CLASS2_FRAME_FROM_NONAUTH_STA);
3051 case_WLAN(CLASS3_FRAME_FROM_NONASSOC_STA);
3052 case_WLAN(DISASSOC_STA_HAS_LEFT);
3053 case_WLAN(STA_REQ_ASSOC_WITHOUT_AUTH);
3054 case_WLAN(DISASSOC_BAD_POWER);
3055 case_WLAN(DISASSOC_BAD_SUPP_CHAN);
3056 case_WLAN(INVALID_IE);
3057 case_WLAN(MIC_FAILURE);
3058 case_WLAN(4WAY_HANDSHAKE_TIMEOUT);
3059 case_WLAN(GROUP_KEY_HANDSHAKE_TIMEOUT);
3060 case_WLAN(IE_DIFFERENT);
3061 case_WLAN(INVALID_GROUP_CIPHER);
3062 case_WLAN(INVALID_PAIRWISE_CIPHER);
3063 case_WLAN(INVALID_AKMP);
3064 case_WLAN(UNSUPP_RSN_VERSION);
3065 case_WLAN(INVALID_RSN_IE_CAP);
3066 case_WLAN(IEEE8021X_FAILED);
3067 case_WLAN(CIPHER_SUITE_REJECTED);
3068 case_WLAN(DISASSOC_UNSPECIFIED_QOS);
3069 case_WLAN(DISASSOC_QAP_NO_BANDWIDTH);
3070 case_WLAN(DISASSOC_LOW_ACK);
3071 case_WLAN(DISASSOC_QAP_EXCEED_TXOP);
3072 case_WLAN(QSTA_LEAVE_QBSS);
3073 case_WLAN(QSTA_NOT_USE);
3074 case_WLAN(QSTA_REQUIRE_SETUP);
3075 case_WLAN(QSTA_TIMEOUT);
3076 case_WLAN(QSTA_CIPHER_NOT_SUPP);
3077 case_WLAN(MESH_PEER_CANCELED);
3078 case_WLAN(MESH_MAX_PEERS);
3079 case_WLAN(MESH_CONFIG);
3080 case_WLAN(MESH_CLOSE);
3081 case_WLAN(MESH_MAX_RETRIES);
3082 case_WLAN(MESH_CONFIRM_TIMEOUT);
3083 case_WLAN(MESH_INVALID_GTK);
3084 case_WLAN(MESH_INCONSISTENT_PARAM);
3085 case_WLAN(MESH_INVALID_SECURITY);
3086 case_WLAN(MESH_PATH_ERROR);
3087 case_WLAN(MESH_PATH_NOFORWARD);
3088 case_WLAN(MESH_PATH_DEST_UNREACHABLE);
3089 case_WLAN(MAC_EXISTS_IN_MBSS);
3090 case_WLAN(MESH_CHAN_REGULATORY);
3091 case_WLAN(MESH_CHAN);
3092 default: return "<unknown>";
3093 }
3094}
66e67e41 3095
8d61ffa5
JB		 3096static void ieee80211_rx_mgmt_deauth(struct ieee80211_sub_if_data *sdata,
3097 struct ieee80211_mgmt *mgmt, size_t len)
f0706e82 3098{
46900298 3099 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
c9c99f89 3100 u16 reason_code = le16_to_cpu(mgmt->u.deauth.reason_code);
f0706e82 3101
8d61ffa5 3102 sdata_assert_lock(sdata);
66e67e41 3103
f4ea83dd 3104 if (len < 24 + 2)
8d61ffa5 3105 return;
f0706e82 3106
79c92ca4
YW		 3107 if (!ether_addr_equal(mgmt->bssid, mgmt->sa)) {
3108 ieee80211_tdls_handle_disconnect(sdata, mgmt->sa, reason_code);
3109 return;
3110 }
3111
c9c99f89
JB		 3112 if (ifmgd->associated &&
3113 ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid)) {
3114 const u8 *bssid = ifmgd->associated->bssid;
77fdaa12 3115
c9c99f89
JB		 3116 sdata_info(sdata, "deauthenticated from %pM (Reason: %u=%s)\n",
3117 bssid, reason_code,
3118 ieee80211_get_reason_code_string(reason_code));
f0706e82 3119
c9c99f89 3120 ieee80211_set_disassoc(sdata, 0, 0, false, NULL);
f0706e82 3121
c9c99f89
JB		 3122 ieee80211_report_disconnect(sdata, (u8 *)mgmt, len, false,
3123 reason_code);
3124 return;
3125 }
77fdaa12 3126
c9c99f89
JB		 3127 if (ifmgd->assoc_data &&
3128 ether_addr_equal(mgmt->bssid, ifmgd->assoc_data->bss->bssid)) {
3129 const u8 *bssid = ifmgd->assoc_data->bss->bssid;
37ad3888 3130
c9c99f89
JB		 3131 sdata_info(sdata,
3132 "deauthenticated from %pM while associating (Reason: %u=%s)\n",
3133 bssid, reason_code,
3134 ieee80211_get_reason_code_string(reason_code));
3135
e6f462df 3136 ieee80211_destroy_assoc_data(sdata, false, true);
c9c99f89
JB		 3137
3138 cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len);
3139 return;
3140 }
f0706e82
JB		 3141}
3142
3143
8d61ffa5
JB		 3144static void ieee80211_rx_mgmt_disassoc(struct ieee80211_sub_if_data *sdata,
3145 struct ieee80211_mgmt *mgmt, size_t len)
f0706e82 3146{
46900298 3147 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
f0706e82
JB		 3148 u16 reason_code;
3149
8d61ffa5 3150 sdata_assert_lock(sdata);
77fdaa12 3151
66e67e41 3152 if (len < 24 + 2)
8d61ffa5 3153 return;
77fdaa12 3154
66e67e41 3155 if (!ifmgd->associated ||
b203ca39 3156 !ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid))
8d61ffa5 3157 return;
f0706e82
JB		 3158
3159 reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code);
3160
79c92ca4
YW		 3161 if (!ether_addr_equal(mgmt->bssid, mgmt->sa)) {
3162 ieee80211_tdls_handle_disconnect(sdata, mgmt->sa, reason_code);
3163 return;
3164 }
3165
68506e9a
AM		 3166 sdata_info(sdata, "disassociated from %pM (Reason: %u=%s)\n",
3167 mgmt->sa, reason_code,
3168 ieee80211_get_reason_code_string(reason_code));
f0706e82 3169
37ad3888
JB		 3170 ieee80211_set_disassoc(sdata, 0, 0, false, NULL);
3171
a90faa9d 3172 ieee80211_report_disconnect(sdata, (u8 *)mgmt, len, false, reason_code);
f0706e82
JB		 3173}
3174
c74d084f
CL		 3175static void ieee80211_get_rates(struct ieee80211_supported_band *sband,
3176 u8 *supp_rates, unsigned int supp_rates_len,
3177 u32 *rates, u32 *basic_rates,
3178 bool *have_higher_than_11mbit,
2103dec1 3179 int *min_rate, int *min_rate_index,
44f6d42c 3180 int shift)
c74d084f
CL		 3181{
3182 int i, j;
3183
3184 for (i = 0; i < supp_rates_len; i++) {
2103dec1 3185 int rate = supp_rates[i] & 0x7f;
c74d084f
CL		 3186 bool is_basic = !!(supp_rates[i] & 0x80);
3187
2103dec1 3188 if ((rate * 5 * (1 << shift)) > 110)
c74d084f
CL		 3189 *have_higher_than_11mbit = true;
3190
3191 /*
4826e721
IP		 3192 * Skip HT, VHT and HE BSS membership selectors since they're
3193 * not rates.
c74d084f 3194 *
a6289d3f 3195 * Note: Even though the membership selector and the basic
c74d084f
CL		 3196 * rate flag share the same bit, they are not exactly
3197 * the same.
3198 */
a6289d3f 3199 if (supp_rates[i] == (0x80 | BSS_MEMBERSHIP_SELECTOR_HT_PHY) ||
4826e721
IP		 3200 supp_rates[i] == (0x80 | BSS_MEMBERSHIP_SELECTOR_VHT_PHY) ||
3201 supp_rates[i] == (0x80 | BSS_MEMBERSHIP_SELECTOR_HE_PHY))
c74d084f
CL		 3202 continue;
3203
3204 for (j = 0; j < sband->n_bitrates; j++) {
2103dec1
SW		 3205 struct ieee80211_rate *br;
3206 int brate;
3207
3208 br = &sband->bitrates[j];
2103dec1
SW		 3209
3210 brate = DIV_ROUND_UP(br->bitrate, (1 << shift) * 5);
3211 if (brate == rate) {
c74d084f
CL		 3212 *rates |= BIT(j);
3213 if (is_basic)
3214 *basic_rates |= BIT(j);
2103dec1
SW		 3215 if ((rate * 5) < *min_rate) {
3216 *min_rate = rate * 5;
c74d084f
CL		 3217 *min_rate_index = j;
3218 }
3219 break;
3220 }
3221 }
3222 }
3223}
f0706e82 3224
55ebd6e6
EG		 3225static bool ieee80211_twt_req_supported(const struct sta_info *sta,
3226 const struct ieee802_11_elems *elems)
3227{
3228 if (elems->ext_capab_len < 10)
3229 return false;
3230
3231 if (!(elems->ext_capab[9] & WLAN_EXT_CAPA10_TWT_RESPONDER_SUPPORT))
3232 return false;
3233
3234 return sta->sta.he_cap.he_cap_elem.mac_cap_info[0] &
3235 IEEE80211_HE_MAC_CAP0_TWT_RES;
3236}
3237
c9d3245e
JC		 3238static int ieee80211_recalc_twt_req(struct ieee80211_sub_if_data *sdata,
3239 struct sta_info *sta,
3240 struct ieee802_11_elems *elems)
3241{
3242 bool twt = ieee80211_twt_req_supported(sta, elems);
3243
3244 if (sdata->vif.bss_conf.twt_requester != twt) {
3245 sdata->vif.bss_conf.twt_requester = twt;
3246 return BSS_CHANGED_TWT;
3247 }
3248 return 0;
3249}
3250
66e67e41
JB		 3251static bool ieee80211_assoc_success(struct ieee80211_sub_if_data *sdata,
3252 struct cfg80211_bss *cbss,
f61d7884
JB		 3253 struct ieee80211_mgmt *mgmt, size_t len,
3254 struct ieee802_11_elems *elems)
f0706e82 3255{
46900298 3256 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
471b3efd 3257 struct ieee80211_local *local = sdata->local;
8318d78a 3258 struct ieee80211_supported_band *sband;
f0706e82 3259 struct sta_info *sta;
af6b6374 3260 u16 capab_info, aid;
bda3933a 3261 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
35d865af
JB		 3262 const struct cfg80211_bss_ies *bss_ies = NULL;
3263 struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data;
57fa5e85 3264 bool is_6ghz = cbss->channel->band == NL80211_BAND_6GHZ;
ae5eb026 3265 u32 changed = 0;
c74d084f 3266 int err;
35d865af 3267 bool ret;
f0706e82 3268
af6b6374 3269 /* AssocResp and ReassocResp have identical structure */
f0706e82 3270
f0706e82 3271 aid = le16_to_cpu(mgmt->u.assoc_resp.aid);
af6b6374 3272 capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info);
f0706e82 3273
c7c477b5
JB		 3274 /*
3275 * The 5 MSB of the AID field are reserved
3276 * (802.11-2016 9.4.1.8 AID field)
3277 */
3278 aid &= 0x7ff;
1dd84aa2 3279
05cb9108
JB		 3280 ifmgd->broken_ap = false;
3281
3282 if (aid == 0 || aid > IEEE80211_MAX_AID) {
bdcbd8e0
JB		 3283 sdata_info(sdata, "invalid AID value %d (out of range), turn off PS\n",
3284 aid);
05cb9108
JB		 3285 aid = 0;
3286 ifmgd->broken_ap = true;
3287 }
3288
f61d7884 3289 if (!elems->supp_rates) {
bdcbd8e0 3290 sdata_info(sdata, "no SuppRates element in AssocResp\n");
af6b6374 3291 return false;
f0706e82
JB		 3292 }
3293
1db364c8 3294 sdata->vif.bss_conf.aid = aid;
9041c1fa 3295 ifmgd->tdls_chan_switch_prohibited =
f61d7884
JB		 3296 elems->ext_capab && elems->ext_capab_len >= 5 &&
3297 (elems->ext_capab[4] & WLAN_EXT_CAPA5_TDLS_CH_SW_PROHIBITED);
f0706e82 3298
35d865af
JB		 3299 /*
3300 * Some APs are erroneously not including some information in their
3301 * (re)association response frames. Try to recover by using the data
3302 * from the beacon or probe response. This seems to afflict mobile
3303 * 2G/3G/4G wifi routers, reported models include the "Onda PN51T",
3304 * "Vodafone PocketWiFi 2", "ZTE MF60" and a similar T-Mobile device.
3305 */
57fa5e85
JB		 3306 if (!is_6ghz &&
3307 ((assoc_data->wmm && !elems->wmm_param) ||
3308 (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT) &&
3309 (!elems->ht_cap_elem || !elems->ht_operation)) ||
3310 (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) &&
3311 (!elems->vht_cap_elem || !elems->vht_operation)))) {
35d865af
JB		 3312 const struct cfg80211_bss_ies *ies;
3313 struct ieee802_11_elems bss_elems;
3314
3315 rcu_read_lock();
3316 ies = rcu_dereference(cbss->ies);
3317 if (ies)
3318 bss_ies = kmemdup(ies, sizeof(*ies) + ies->len,
3319 GFP_ATOMIC);
3320 rcu_read_unlock();
3321 if (!bss_ies)
3322 return false;
3323
3324 ieee802_11_parse_elems(bss_ies->data, bss_ies->len,
4abb52a4
SS		 3325 false, &bss_elems,
3326 mgmt->bssid,
3327 assoc_data->bss->bssid);
35d865af 3328 if (assoc_data->wmm &&
f61d7884
JB		 3329 !elems->wmm_param && bss_elems.wmm_param) {
3330 elems->wmm_param = bss_elems.wmm_param;
35d865af
JB		 3331 sdata_info(sdata,
3332 "AP bug: WMM param missing from AssocResp\n");
3333 }
3334
3335 /*
3336 * Also check if we requested HT/VHT, otherwise the AP doesn't
3337 * have to include the IEs in the (re)association response.
3338 */
f61d7884 3339 if (!elems->ht_cap_elem && bss_elems.ht_cap_elem &&
35d865af 3340 !(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) {
f61d7884 3341 elems->ht_cap_elem = bss_elems.ht_cap_elem;
35d865af
JB		 3342 sdata_info(sdata,
3343 "AP bug: HT capability missing from AssocResp\n");
3344 }
f61d7884 3345 if (!elems->ht_operation && bss_elems.ht_operation &&
35d865af 3346 !(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) {
f61d7884 3347 elems->ht_operation = bss_elems.ht_operation;
35d865af
JB		 3348 sdata_info(sdata,
3349 "AP bug: HT operation missing from AssocResp\n");
3350 }
f61d7884 3351 if (!elems->vht_cap_elem && bss_elems.vht_cap_elem &&
35d865af 3352 !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) {
f61d7884 3353 elems->vht_cap_elem = bss_elems.vht_cap_elem;
35d865af
JB		 3354 sdata_info(sdata,
3355 "AP bug: VHT capa missing from AssocResp\n");
3356 }
f61d7884 3357 if (!elems->vht_operation && bss_elems.vht_operation &&
35d865af 3358 !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) {
f61d7884 3359 elems->vht_operation = bss_elems.vht_operation;
35d865af
JB		 3360 sdata_info(sdata,
3361 "AP bug: VHT operation missing from AssocResp\n");
3362 }
3363 }
3364
30eb1dc2
JB		 3365 /*
3366 * We previously checked these in the beacon/probe response, so
3367 * they should be present here. This is just a safety net.
3368 */
57fa5e85 3369 if (!is_6ghz && !(ifmgd->flags & IEEE80211_STA_DISABLE_HT) &&
f61d7884 3370 (!elems->wmm_param || !elems->ht_cap_elem || !elems->ht_operation)) {
30eb1dc2 3371 sdata_info(sdata,
35d865af
JB		 3372 "HT AP is missing WMM params or HT capability/operation\n");
3373 ret = false;
3374 goto out;
30eb1dc2
JB		 3375 }
3376
57fa5e85 3377 if (!is_6ghz && !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) &&
f61d7884 3378 (!elems->vht_cap_elem || !elems->vht_operation)) {
30eb1dc2 3379 sdata_info(sdata,
35d865af
JB		 3380 "VHT AP is missing VHT capability/operation\n");
3381 ret = false;
3382 goto out;
30eb1dc2
JB		 3383 }
3384
57fa5e85
JB		 3385 if (is_6ghz && !(ifmgd->flags & IEEE80211_STA_DISABLE_HE) &&
3386 !elems->he_6ghz_capa) {
3387 sdata_info(sdata,
3388 "HE 6 GHz AP is missing HE 6 GHz band capability\n");
3389 ret = false;
3390 goto out;
3391 }
3392
2a33bee2
GE		 3393 mutex_lock(&sdata->local->sta_mtx);
3394 /*
3395 * station info was already allocated and inserted before
3396 * the association and should be available to us
3397 */
7852e361 3398 sta = sta_info_get(sdata, cbss->bssid);
2a33bee2
GE		 3399 if (WARN_ON(!sta)) {
3400 mutex_unlock(&sdata->local->sta_mtx);
35d865af
JB		 3401 ret = false;
3402 goto out;
77fdaa12 3403 }
05e5e883 3404
21a8e9dd
MSS		 3405 sband = ieee80211_get_sband(sdata);
3406 if (!sband) {
3407 mutex_unlock(&sdata->local->sta_mtx);
3408 ret = false;
3409 goto out;
3410 }
f709fc69 3411
41cbb0f5 3412 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HE) &&
f61d7884 3413 (!elems->he_cap || !elems->he_operation)) {
41cbb0f5
LC		 3414 mutex_unlock(&sdata->local->sta_mtx);
3415 sdata_info(sdata,
3416 "HE AP is missing HE capability/operation\n");
3417 ret = false;
3418 goto out;
3419 }
3420
30eb1dc2 3421 /* Set up internal HT/VHT capabilities */
f61d7884 3422 if (elems->ht_cap_elem && !(ifmgd->flags & IEEE80211_STA_DISABLE_HT))
ef96a842 3423 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
f61d7884 3424 elems->ht_cap_elem, sta);
64f68e5d 3425
f61d7884 3426 if (elems->vht_cap_elem && !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
818255ea 3427 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
f61d7884 3428 elems->vht_cap_elem, sta);
818255ea 3429
f61d7884
JB		 3430 if (elems->he_operation && !(ifmgd->flags & IEEE80211_STA_DISABLE_HE) &&
3431 elems->he_cap) {
41cbb0f5 3432 ieee80211_he_cap_ie_to_sta_he_cap(sdata, sband,
f61d7884
JB		 3433 elems->he_cap,
3434 elems->he_cap_len,
1bb9a8a4 3435 elems->he_6ghz_capa,
41cbb0f5
LC		 3436 sta);
3437
3438 bss_conf->he_support = sta->sta.he_cap.has_he;
d46b4ab8
ST		 3439 if (elems->rsnx && elems->rsnx_len &&
3440 (elems->rsnx[0] & WLAN_RSNX_CAPA_PROTECTED_TWT) &&
3441 wiphy_ext_feature_isset(local->hw.wiphy,
3442 NL80211_EXT_FEATURE_PROTECTED_TWT))
3443 bss_conf->twt_protected = true;
3444 else
3445 bss_conf->twt_protected = false;
3446
f61d7884 3447 changed |= ieee80211_recalc_twt_req(sdata, sta, elems);
41cbb0f5
LC		 3448 } else {
3449 bss_conf->he_support = false;
55ebd6e6 3450 bss_conf->twt_requester = false;
d46b4ab8 3451 bss_conf->twt_protected = false;
41cbb0f5
LC		 3452 }
3453
3454 if (bss_conf->he_support) {
dd56e902 3455 bss_conf->he_bss_color.color =
f61d7884 3456 le32_get_bits(elems->he_operation->he_oper_params,
77cbbc35 3457 IEEE80211_HE_OPERATION_BSS_COLOR_MASK);
dd56e902
JC		 3458 bss_conf->he_bss_color.partial =
3459 le32_get_bits(elems->he_operation->he_oper_params,
3460 IEEE80211_HE_OPERATION_PARTIAL_BSS_COLOR);
3461 bss_conf->he_bss_color.disabled =
3462 le32_get_bits(elems->he_operation->he_oper_params,
3463 IEEE80211_HE_OPERATION_BSS_COLOR_DISABLED);
3464 changed |= BSS_CHANGED_HE_BSS_COLOR;
41cbb0f5 3465
41cbb0f5 3466 bss_conf->htc_trig_based_pkt_ext =
f61d7884 3467 le32_get_bits(elems->he_operation->he_oper_params,
77cbbc35 3468 IEEE80211_HE_OPERATION_DFLT_PE_DURATION_MASK);
41cbb0f5 3469 bss_conf->frame_time_rts_th =
f61d7884 3470 le32_get_bits(elems->he_operation->he_oper_params,
77cbbc35 3471 IEEE80211_HE_OPERATION_RTS_THRESHOLD_MASK);
41cbb0f5
LC		 3472
3473 bss_conf->multi_sta_back_32bit =
3474 sta->sta.he_cap.he_cap_elem.mac_cap_info[2] &
3475 IEEE80211_HE_MAC_CAP2_32BIT_BA_BITMAP;
3476
3477 bss_conf->ack_enabled =
3478 sta->sta.he_cap.he_cap_elem.mac_cap_info[2] &
3479 IEEE80211_HE_MAC_CAP2_ACK_EN;
3480
f61d7884
JB		 3481 bss_conf->uora_exists = !!elems->uora_element;
3482 if (elems->uora_element)
3483 bss_conf->uora_ocw_range = elems->uora_element[0];
41cbb0f5 3484
f61d7884
JB		 3485 ieee80211_he_op_ie_to_bss_conf(&sdata->vif, elems->he_operation);
3486 ieee80211_he_spr_ie_to_bss_conf(&sdata->vif, elems->he_spr);
41cbb0f5
LC		 3487 /* TODO: OPEN: what happens if BSS color disable is set? */
3488 }
3489
78ac51f8
SS		 3490 if (cbss->transmitted_bss) {
3491 bss_conf->nontransmitted = true;
3492 ether_addr_copy(bss_conf->transmitter_bssid,
3493 cbss->transmitted_bss->bssid);
3494 bss_conf->bssid_indicator = cbss->max_bssid_indicator;
3495 bss_conf->bssid_index = cbss->bssid_index;
3496 }
3497
30eb1dc2
JB		 3498 /*
3499 * Some APs, e.g. Netgear WNDR3700, report invalid HT operation data
3500 * in their association response, so ignore that data for our own
3501 * configuration. If it changed since the last beacon, we'll get the
3502 * next beacon and update then.
3503 */
1128958d 3504
bee7f586
JB		 3505 /*
3506 * If an operating mode notification IE is present, override the
3507 * NSS calculation (that would be done in rate_control_rate_init())
3508 * and use the # of streams from that element.
3509 */
f61d7884
JB		 3510 if (elems->opmode_notif &&
3511 !(*elems->opmode_notif & IEEE80211_OPMODE_NOTIF_RX_NSS_TYPE_BF)) {
bee7f586
JB		 3512 u8 nss;
3513
f61d7884 3514 nss = *elems->opmode_notif & IEEE80211_OPMODE_NOTIF_RX_NSS_MASK;
bee7f586
JB		 3515 nss >>= IEEE80211_OPMODE_NOTIF_RX_NSS_SHIFT;
3516 nss += 1;
3517 sta->sta.rx_nss = nss;
3518 }
3519
4b7679a5 3520 rate_control_rate_init(sta);
f0706e82 3521
93f0490e 3522 if (ifmgd->flags & IEEE80211_STA_MFP_ENABLED) {
c2c98fde 3523 set_sta_flag(sta, WLAN_STA_MFP);
93f0490e
T		 3524 sta->sta.mfp = true;
3525 } else {
3526 sta->sta.mfp = false;
3527 }
5394af4d 3528
f61d7884 3529 sta->sta.wme = elems->wmm_param && local->hw.queues >= IEEE80211_NUM_ACS;
ddf4ac53 3530
3e4d40fa 3531 err = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
c8987876
JB		 3532 if (!err && !(ifmgd->flags & IEEE80211_STA_CONTROL_PORT))
3533 err = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
3534 if (err) {
bdcbd8e0
JB		 3535 sdata_info(sdata,
3536 "failed to move station %pM to desired state\n",
3537 sta->sta.addr);
c8987876
JB		 3538 WARN_ON(__sta_info_destroy(sta));
3539 mutex_unlock(&sdata->local->sta_mtx);
35d865af
JB		 3540 ret = false;
3541 goto out;
c8987876
JB		 3542 }
3543
7852e361 3544 mutex_unlock(&sdata->local->sta_mtx);
ddf4ac53 3545
f2176d72
JO		 3546 /*
3547 * Always handle WMM once after association regardless
3548 * of the first value the AP uses. Setting -1 here has
3549 * that effect because the AP values is an unsigned
3550 * 4-bit value.
3551 */
3552 ifmgd->wmm_last_param_set = -1;
2e249fc3 3553 ifmgd->mu_edca_last_param_set = -1;
f2176d72 3554
2ed77ea6 3555 if (ifmgd->flags & IEEE80211_STA_DISABLE_WMM) {
cec66283 3556 ieee80211_set_wmm_default(sdata, false, false);
f61d7884
JB		 3557 } else if (!ieee80211_sta_wmm_params(local, sdata, elems->wmm_param,
3558 elems->wmm_param_len,
3559 elems->mu_edca_param_set)) {
2ed77ea6
JB		 3560 /* still enable QoS since we might have HT/VHT */
3561 ieee80211_set_wmm_default(sdata, false, true);
3562 /* set the disable-WMM flag in this case to disable
3563 * tracking WMM parameter changes in the beacon if
3564 * the parameters weren't actually valid. Doing so
3565 * avoids changing parameters very strangely when
3566 * the AP is going back and forth between valid and
3567 * invalid parameters.
3568 */
3569 ifmgd->flags |= IEEE80211_STA_DISABLE_WMM;
3570 }
3abead59 3571 changed |= BSS_CHANGED_QOS;
f0706e82 3572
f61d7884 3573 if (elems->max_idle_period_ie) {
e38a017b 3574 bss_conf->max_idle_period =
f61d7884 3575 le16_to_cpu(elems->max_idle_period_ie->max_idle_period);
e38a017b 3576 bss_conf->protected_keep_alive =
f61d7884 3577 !!(elems->max_idle_period_ie->idle_options &
e38a017b
AS		 3578 WLAN_IDLE_OPTIONS_PROTECTED_KEEP_ALIVE);
3579 changed |= BSS_CHANGED_KEEP_ALIVE;
3580 } else {
3581 bss_conf->max_idle_period = 0;
3582 bss_conf->protected_keep_alive = false;
3583 }
3584
1db364c8 3585 /* set assoc capability (AID was already set earlier),
60f8b39c 3586 * ieee80211_set_associated() will tell the driver */
60f8b39c 3587 bss_conf->assoc_capability = capab_info;
0c1ad2ca 3588 ieee80211_set_associated(sdata, cbss, changed);
f0706e82 3589
d524215f
FF		 3590 /*
3591 * If we're using 4-addr mode, let the AP know that we're
3592 * doing so, so that it can create the STA VLAN on its side
3593 */
3594 if (ifmgd->use_4addr)
3595 ieee80211_send_4addr_nullfunc(local, sdata);
3596
15b7b062 3597 /*
b291ba11
JB		 3598 * Start timer to probe the connection to the AP now.
3599 * Also start the timer that will detect beacon loss.
15b7b062 3600 */
b291ba11 3601 ieee80211_sta_rx_notify(sdata, (struct ieee80211_hdr *)mgmt);
d3a910a8 3602 ieee80211_sta_reset_beacon_monitor(sdata);
15b7b062 3603
35d865af
JB		 3604 ret = true;
3605 out:
3606 kfree(bss_ies);
3607 return ret;
f0706e82
JB		 3608}
3609
8d61ffa5
JB		 3610static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata,
3611 struct ieee80211_mgmt *mgmt,
3612 size_t len)
66e67e41
JB		 3613{
3614 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3615 struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data;
3616 u16 capab_info, status_code, aid;
3617 struct ieee802_11_elems elems;
b0b6aa2c 3618 int ac, uapsd_queues = -1;
66e67e41
JB		 3619 u8 *pos;
3620 bool reassoc;
8d61ffa5 3621 struct cfg80211_bss *bss;
d0d1a12f
EG		 3622 struct ieee80211_event event = {
3623 .type = MLME_EVENT,
3624 .u.mlme.data = ASSOC_EVENT,
3625 };
66e67e41 3626
8d61ffa5 3627 sdata_assert_lock(sdata);
66e67e41
JB		 3628
3629 if (!assoc_data)
8d61ffa5 3630 return;
b203ca39 3631 if (!ether_addr_equal(assoc_data->bss->bssid, mgmt->bssid))
8d61ffa5 3632 return;
66e67e41
JB		 3633
3634 /*
3635 * AssocResp and ReassocResp have identical structure, so process both
3636 * of them in this function.
3637 */
3638
3639 if (len < 24 + 6)
8d61ffa5 3640 return;
66e67e41 3641
7a7d3e4c 3642 reassoc = ieee80211_is_reassoc_resp(mgmt->frame_control);
66e67e41
JB		 3643 capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info);
3644 status_code = le16_to_cpu(mgmt->u.assoc_resp.status_code);
3645 aid = le16_to_cpu(mgmt->u.assoc_resp.aid);
3646
bdcbd8e0
JB		 3647 sdata_info(sdata,
3648 "RX %sssocResp from %pM (capab=0x%x status=%d aid=%d)\n",
3649 reassoc ? "Rea" : "A", mgmt->sa,
3650 capab_info, status_code, (u16)(aid & ~(BIT(15) | BIT(14))));
66e67e41 3651
39404fee
JM		 3652 if (assoc_data->fils_kek_len &&
3653 fils_decrypt_assoc_resp(sdata, (u8 *)mgmt, &len, assoc_data) < 0)
3654 return;
3655
66e67e41 3656 pos = mgmt->u.assoc_resp.variable;
4abb52a4
SS		 3657 ieee802_11_parse_elems(pos, len - (pos - (u8 *)mgmt), false, &elems,
3658 mgmt->bssid, assoc_data->bss->bssid);
66e67e41
JB		 3659
3660 if (status_code == WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY &&
79ba1d89
JB		 3661 elems.timeout_int &&
3662 elems.timeout_int->type == WLAN_TIMEOUT_ASSOC_COMEBACK) {
66e67e41 3663 u32 tu, ms;
79ba1d89 3664 tu = le32_to_cpu(elems.timeout_int->value);
66e67e41 3665 ms = tu * 1024 / 1000;
bdcbd8e0
JB		 3666 sdata_info(sdata,
3667 "%pM rejected association temporarily; comeback duration %u TU (%u ms)\n",
3668 mgmt->sa, tu, ms);
66e67e41 3669 assoc_data->timeout = jiffies + msecs_to_jiffies(ms);
89afe614 3670 assoc_data->timeout_started = true;
66e67e41 3671 if (ms > IEEE80211_ASSOC_TIMEOUT)
8d61ffa5
JB		 3672 run_again(sdata, assoc_data->timeout);
3673 return;
66e67e41
JB		 3674 }
3675
8d61ffa5 3676 bss = assoc_data->bss;
66e67e41
JB		 3677
3678 if (status_code != WLAN_STATUS_SUCCESS) {
bdcbd8e0
JB		 3679 sdata_info(sdata, "%pM denied association (code=%d)\n",
3680 mgmt->sa, status_code);
e6f462df 3681 ieee80211_destroy_assoc_data(sdata, false, false);
d0d1a12f
EG		 3682 event.u.mlme.status = MLME_DENIED;
3683 event.u.mlme.reason = status_code;
3684 drv_event_callback(sdata->local, sdata, &event);
66e67e41 3685 } else {
f61d7884 3686 if (!ieee80211_assoc_success(sdata, bss, mgmt, len, &elems)) {
66e67e41 3687 /* oops -- internal error -- send timeout for now */
e6f462df 3688 ieee80211_destroy_assoc_data(sdata, false, false);
959867fa 3689 cfg80211_assoc_timeout(sdata->dev, bss);
8d61ffa5 3690 return;
66e67e41 3691 }
d0d1a12f
EG		 3692 event.u.mlme.status = MLME_SUCCESS;
3693 drv_event_callback(sdata->local, sdata, &event);
635d999f 3694 sdata_info(sdata, "associated\n");
79ebfb85
JB		 3695
3696 /*
3697 * destroy assoc_data afterwards, as otherwise an idle
3698 * recalc after assoc_data is NULL but before associated
3699 * is set can cause the interface to go idle
3700 */
e6f462df 3701 ieee80211_destroy_assoc_data(sdata, true, false);
b0b6aa2c
EP		 3702
3703 /* get uapsd queues configuration */
3704 uapsd_queues = 0;
3705 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
3706 if (sdata->tx_conf[ac].uapsd)
f438ceb8 3707 uapsd_queues |= ieee80211_ac_to_qos_mask[ac];
66e67e41
JB		 3708 }
3709
4d9ec73d
JM		 3710 cfg80211_rx_assoc_resp(sdata->dev, bss, (u8 *)mgmt, len, uapsd_queues,
3711 ifmgd->assoc_req_ies, ifmgd->assoc_req_ies_len);
66e67e41 3712}
8e3c1b77 3713
98c8fccf 3714static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
8e3c1b77 3715 struct ieee80211_mgmt *mgmt, size_t len,
4abb52a4 3716 struct ieee80211_rx_status *rx_status)
98c8fccf
JB		 3717{
3718 struct ieee80211_local *local = sdata->local;
c2b13452 3719 struct ieee80211_bss *bss;
98c8fccf 3720 struct ieee80211_channel *channel;
56007a02 3721
8d61ffa5 3722 sdata_assert_lock(sdata);
b4f286a1 3723
3b23c184
TP		 3724 channel = ieee80211_get_channel_khz(local->hw.wiphy,
3725 ieee80211_rx_status_to_khz(rx_status));
3afc2167 3726 if (!channel)
98c8fccf
JB		 3727 return;
3728
4abb52a4 3729 bss = ieee80211_bss_info_update(local, rx_status, mgmt, len, channel);
817cee76 3730 if (bss) {
817cee76 3731 sdata->vif.bss_conf.beacon_rate = bss->beacon_rate;
d2722f8b 3732 ieee80211_rx_bss_put(local, bss);
817cee76 3733 }
f0706e82
JB		 3734}
3735
3736
f698d856 3737static void ieee80211_rx_mgmt_probe_resp(struct ieee80211_sub_if_data *sdata,
af6b6374 3738 struct sk_buff *skb)
f0706e82 3739{
af6b6374 3740 struct ieee80211_mgmt *mgmt = (void *)skb->data;
15b7b062 3741 struct ieee80211_if_managed *ifmgd;
af6b6374 3742 struct ieee80211_rx_status *rx_status = (void *) skb->cb;
85b27ef7 3743 struct ieee80211_channel *channel;
af6b6374 3744 size_t baselen, len = skb->len;
ae6a44e3 3745
15b7b062
KV		 3746 ifmgd = &sdata->u.mgd;
3747
8d61ffa5 3748 sdata_assert_lock(sdata);
77fdaa12 3749
85b27ef7
AO		 3750 /*
3751 * According to Draft P802.11ax D6.0 clause 26.17.2.3.2:
3752 * "If a 6 GHz AP receives a Probe Request frame and responds with
3753 * a Probe Response frame [..], the Address 1 field of the Probe
3754 * Response frame shall be set to the broadcast address [..]"
3755 * So, on 6GHz band we should also accept broadcast responses.
3756 */
3757 channel = ieee80211_get_channel(sdata->local->hw.wiphy,
3758 rx_status->freq);
3759 if (!channel)
3760 return;
3761
3762 if (!ether_addr_equal(mgmt->da, sdata->vif.addr) &&
3763 (channel->band != NL80211_BAND_6GHZ ||
3764 !is_broadcast_ether_addr(mgmt->da)))
8e7cdbb6
TW		 3765 return; /* ignore ProbeResp to foreign address */
3766
ae6a44e3
EK		 3767 baselen = (u8 *) mgmt->u.probe_resp.variable - (u8 *) mgmt;
3768 if (baselen > len)
3769 return;
3770
4abb52a4 3771 ieee80211_rx_bss_info(sdata, mgmt, len, rx_status);
9859b81e 3772
77fdaa12 3773 if (ifmgd->associated &&
b203ca39 3774 ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid))
4e5ff376 3775 ieee80211_reset_ap_probe(sdata);
f0706e82
JB		 3776}
3777
d91f36db
JB		 3778/*
3779 * This is the canonical list of information elements we care about,
3780 * the filter code also gives us all changes to the Microsoft OUI
c8d65917
SG		 3781 * (00:50:F2) vendor IE which is used for WMM which we need to track,
3782 * as well as the DTPC IE (part of the Cisco OUI) used for signaling
3783 * changes to requested client power.
d91f36db
JB		 3784 *
3785 * We implement beacon filtering in software since that means we can
3786 * avoid processing the frame here and in cfg80211, and userspace
3787 * will not be able to tell whether the hardware supports it or not.
3788 *
3789 * XXX: This list needs to be dynamic -- userspace needs to be able to
3790 * add items it requires. It also needs to be able to tell us to
3791 * look out for other vendor IEs.
3792 */
3793static const u64 care_about_ies =
1d4df3a5
JB		 3794 (1ULL << WLAN_EID_COUNTRY) |
3795 (1ULL << WLAN_EID_ERP_INFO) |
3796 (1ULL << WLAN_EID_CHANNEL_SWITCH) |
3797 (1ULL << WLAN_EID_PWR_CONSTRAINT) |
3798 (1ULL << WLAN_EID_HT_CAPABILITY) |
70a3fd6c
JB		 3799 (1ULL << WLAN_EID_HT_OPERATION) |
3800 (1ULL << WLAN_EID_EXT_CHANSWITCH_ANN);
d91f36db 3801
1ad22fb5
T		 3802static void ieee80211_handle_beacon_sig(struct ieee80211_sub_if_data *sdata,
3803 struct ieee80211_if_managed *ifmgd,
3804 struct ieee80211_bss_conf *bss_conf,
3805 struct ieee80211_local *local,
3806 struct ieee80211_rx_status *rx_status)
f0706e82 3807{
17e4ec14 3808 /* Track average RSSI from the Beacon frames of the current AP */
1ad22fb5 3809
17e4ec14
JM		 3810 if (ifmgd->flags & IEEE80211_STA_RESET_SIGNAL_AVE) {
3811 ifmgd->flags &= ~IEEE80211_STA_RESET_SIGNAL_AVE;
338c17ae 3812 ewma_beacon_signal_init(&ifmgd->ave_beacon_signal);
17e4ec14 3813 ifmgd->last_cqm_event_signal = 0;
391a200a 3814 ifmgd->count_beacon_signal = 1;
615f7b9b 3815 ifmgd->last_ave_beacon_signal = 0;
17e4ec14 3816 } else {
391a200a 3817 ifmgd->count_beacon_signal++;
17e4ec14 3818 }
615f7b9b 3819
338c17ae
JB		 3820 ewma_beacon_signal_add(&ifmgd->ave_beacon_signal, -rx_status->signal);
3821
615f7b9b
MV		 3822 if (ifmgd->rssi_min_thold != ifmgd->rssi_max_thold &&
3823 ifmgd->count_beacon_signal >= IEEE80211_SIGNAL_AVE_MIN_COUNT) {
338c17ae 3824 int sig = -ewma_beacon_signal_read(&ifmgd->ave_beacon_signal);
615f7b9b 3825 int last_sig = ifmgd->last_ave_beacon_signal;
a8182929
EG		 3826 struct ieee80211_event event = {
3827 .type = RSSI_EVENT,
3828 };
615f7b9b
MV		 3829
3830 /*
3831 * if signal crosses either of the boundaries, invoke callback
3832 * with appropriate parameters
3833 */
3834 if (sig > ifmgd->rssi_max_thold &&
3835 (last_sig <= ifmgd->rssi_min_thold || last_sig == 0)) {
3836 ifmgd->last_ave_beacon_signal = sig;
a8182929
EG		 3837 event.u.rssi.data = RSSI_EVENT_HIGH;
3838 drv_event_callback(local, sdata, &event);
615f7b9b
MV		 3839 } else if (sig < ifmgd->rssi_min_thold &&
3840 (last_sig >= ifmgd->rssi_max_thold ||
3841 last_sig == 0)) {
3842 ifmgd->last_ave_beacon_signal = sig;
a8182929
EG		 3843 event.u.rssi.data = RSSI_EVENT_LOW;
3844 drv_event_callback(local, sdata, &event);
615f7b9b
MV		 3845 }
3846 }
3847
17e4ec14 3848 if (bss_conf->cqm_rssi_thold &&
391a200a 3849 ifmgd->count_beacon_signal >= IEEE80211_SIGNAL_AVE_MIN_COUNT &&
ea086359 3850 !(sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)) {
338c17ae 3851 int sig = -ewma_beacon_signal_read(&ifmgd->ave_beacon_signal);
17e4ec14
JM		 3852 int last_event = ifmgd->last_cqm_event_signal;
3853 int thold = bss_conf->cqm_rssi_thold;
3854 int hyst = bss_conf->cqm_rssi_hyst;
338c17ae 3855
17e4ec14
JM		 3856 if (sig < thold &&
3857 (last_event == 0 || sig < last_event - hyst)) {
3858 ifmgd->last_cqm_event_signal = sig;
3859 ieee80211_cqm_rssi_notify(
3860 &sdata->vif,
3861 NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW,
769f07d8 3862 sig, GFP_KERNEL);
17e4ec14
JM		 3863 } else if (sig > thold &&
3864 (last_event == 0 || sig > last_event + hyst)) {
3865 ifmgd->last_cqm_event_signal = sig;
3866 ieee80211_cqm_rssi_notify(
3867 &sdata->vif,
3868 NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH,
769f07d8 3869 sig, GFP_KERNEL);
17e4ec14
JM		 3870 }
3871 }
3872
2c3c5f8c
AZ		 3873 if (bss_conf->cqm_rssi_low &&
3874 ifmgd->count_beacon_signal >= IEEE80211_SIGNAL_AVE_MIN_COUNT) {
3875 int sig = -ewma_beacon_signal_read(&ifmgd->ave_beacon_signal);
3876 int last_event = ifmgd->last_cqm_event_signal;
3877 int low = bss_conf->cqm_rssi_low;
3878 int high = bss_conf->cqm_rssi_high;
3879
3880 if (sig < low &&
3881 (last_event == 0 || last_event >= low)) {
3882 ifmgd->last_cqm_event_signal = sig;
3883 ieee80211_cqm_rssi_notify(
3884 &sdata->vif,
3885 NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW,
3886 sig, GFP_KERNEL);
3887 } else if (sig > high &&
3888 (last_event == 0 || last_event <= high)) {
3889 ifmgd->last_cqm_event_signal = sig;
3890 ieee80211_cqm_rssi_notify(
3891 &sdata->vif,
3892 NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH,
3893 sig, GFP_KERNEL);
3894 }
3895 }
1ad22fb5
T		 3896}
3897
78ac51f8
SS		 3898static bool ieee80211_rx_our_beacon(const u8 *tx_bssid,
3899 struct cfg80211_bss *bss)
3900{
3901 if (ether_addr_equal(tx_bssid, bss->bssid))
3902 return true;
3903 if (!bss->transmitted_bss)
3904 return false;
3905 return ether_addr_equal(tx_bssid, bss->transmitted_bss->bssid);
3906}
3907
1ad22fb5
T		 3908static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
3909 struct ieee80211_mgmt *mgmt, size_t len,
3910 struct ieee80211_rx_status *rx_status)
3911{
3912 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3913 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
3914 size_t baselen;
3915 struct ieee802_11_elems elems;
3916 struct ieee80211_local *local = sdata->local;
3917 struct ieee80211_chanctx_conf *chanctx_conf;
3918 struct ieee80211_channel *chan;
3919 struct sta_info *sta;
3920 u32 changed = 0;
3921 bool erp_valid;
3922 u8 erp_value = 0;
3923 u32 ncrc;
3924 u8 *bssid;
3925 u8 deauth_buf[IEEE80211_DEAUTH_FRAME_LEN];
3926
3927 sdata_assert_lock(sdata);
3928
3929 /* Process beacon from the current BSS */
3930 baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt;
3931 if (baselen > len)
3932 return;
3933
3934 rcu_read_lock();
3935 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3936 if (!chanctx_conf) {
3937 rcu_read_unlock();
3938 return;
3939 }
3940
3b23c184
TP		 3941 if (ieee80211_rx_status_to_khz(rx_status) !=
3942 ieee80211_channel_to_khz(chanctx_conf->def.chan)) {
1ad22fb5
T		 3943 rcu_read_unlock();
3944 return;
3945 }
3946 chan = chanctx_conf->def.chan;
3947 rcu_read_unlock();
3948
3949 if (ifmgd->assoc_data && ifmgd->assoc_data->need_beacon &&
78ac51f8 3950 ieee80211_rx_our_beacon(mgmt->bssid, ifmgd->assoc_data->bss)) {
1ad22fb5 3951 ieee802_11_parse_elems(mgmt->u.beacon.variable,
4abb52a4
SS		 3952 len - baselen, false, &elems,
3953 mgmt->bssid,
3954 ifmgd->assoc_data->bss->bssid);
1ad22fb5 3955
4abb52a4 3956 ieee80211_rx_bss_info(sdata, mgmt, len, rx_status);
78ac51f8
SS		 3957
3958 if (elems.dtim_period)
3959 ifmgd->dtim_period = elems.dtim_period;
1ad22fb5
T		 3960 ifmgd->have_beacon = true;
3961 ifmgd->assoc_data->need_beacon = false;
3962 if (ieee80211_hw_check(&local->hw, TIMING_BEACON_ONLY)) {
3963 sdata->vif.bss_conf.sync_tsf =
3964 le64_to_cpu(mgmt->u.beacon.timestamp);
3965 sdata->vif.bss_conf.sync_device_ts =
3966 rx_status->device_timestamp;
78ac51f8 3967 sdata->vif.bss_conf.sync_dtim_count = elems.dtim_count;
1ad22fb5 3968 }
78ac51f8
SS		 3969
3970 if (elems.mbssid_config_ie)
3971 bss_conf->profile_periodicity =
3972 elems.mbssid_config_ie->profile_periodicity;
3973
3974 if (elems.ext_capab_len >= 11 &&
3975 (elems.ext_capab[10] & WLAN_EXT_CAPA11_EMA_SUPPORT))
3976 bss_conf->ema_ap = true;
3977
1ad22fb5
T		 3978 /* continue assoc process */
3979 ifmgd->assoc_data->timeout = jiffies;
3980 ifmgd->assoc_data->timeout_started = true;
3981 run_again(sdata, ifmgd->assoc_data->timeout);
3982 return;
3983 }
3984
3985 if (!ifmgd->associated ||
78ac51f8 3986 !ieee80211_rx_our_beacon(mgmt->bssid, ifmgd->associated))
1ad22fb5
T		 3987 return;
3988 bssid = ifmgd->associated->bssid;
3989
3990 if (!(rx_status->flag & RX_FLAG_NO_SIGNAL_VAL))
3991 ieee80211_handle_beacon_sig(sdata, ifmgd, bss_conf,
3992 local, rx_status);
2c3c5f8c 3993
392b9ffb 3994 if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL) {
bdcbd8e0 3995 mlme_dbg_ratelimited(sdata,
112c31f0 3996 "cancelling AP probe due to a received beacon\n");
392b9ffb 3997 ieee80211_reset_ap_probe(sdata);
92778180
JM		 3998 }
3999
b291ba11
JB		 4000 /*
4001 * Push the beacon loss detection into the future since
4002 * we are processing a beacon from the AP just now.
4003 */
d3a910a8 4004 ieee80211_sta_reset_beacon_monitor(sdata);
b291ba11 4005
d91f36db
JB		 4006 ncrc = crc32_be(0, (void *)&mgmt->u.beacon.beacon_int, 4);
4007 ncrc = ieee802_11_parse_elems_crc(mgmt->u.beacon.variable,
b2e506bf 4008 len - baselen, false, &elems,
4abb52a4
SS		 4009 care_about_ies, ncrc,
4010 mgmt->bssid, bssid);
d91f36db 4011
90d13e8f 4012 if (ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK) &&
1db364c8 4013 ieee80211_check_tim(elems.tim, elems.tim_len, bss_conf->aid)) {
90d13e8f
JB		 4014 if (local->hw.conf.dynamic_ps_timeout > 0) {
4015 if (local->hw.conf.flags & IEEE80211_CONF_PS) {
4016 local->hw.conf.flags &= ~IEEE80211_CONF_PS;
4017 ieee80211_hw_config(local,
4018 IEEE80211_CONF_CHANGE_PS);
572e0012 4019 }
076cdcb1 4020 ieee80211_send_nullfunc(local, sdata, false);
90d13e8f
JB		 4021 } else if (!local->pspolling && sdata->u.mgd.powersave) {
4022 local->pspolling = true;
4023
4024 /*
4025 * Here is assumed that the driver will be
4026 * able to send ps-poll frame and receive a
4027 * response even though power save mode is
4028 * enabled, but some drivers might require
4029 * to disable power save here. This needs
4030 * to be investigated.
4031 */
4032 ieee80211_send_pspoll(local, sdata);
a97b77b9
VN		 4033 }
4034 }
7a5158ef 4035
b115b972
JD		 4036 if (sdata->vif.p2p ||
4037 sdata->vif.driver_flags & IEEE80211_VIF_GET_NOA_UPDATE) {
67baf663 4038 struct ieee80211_p2p_noa_attr noa = {};
488dd7b5
JB		 4039 int ret;
4040
4041 ret = cfg80211_get_p2p_attr(mgmt->u.beacon.variable,
4042 len - baselen,
4043 IEEE80211_P2P_ATTR_ABSENCE_NOTICE,
934457ee 4044 (u8 *) &noa, sizeof(noa));
67baf663
JD		 4045 if (ret >= 2) {
4046 if (sdata->u.mgd.p2p_noa_index != noa.index) {
4047 /* valid noa_attr and index changed */
4048 sdata->u.mgd.p2p_noa_index = noa.index;
4049 memcpy(&bss_conf->p2p_noa_attr, &noa, sizeof(noa));
4050 changed |= BSS_CHANGED_P2P_PS;
4051 /*
4052 * make sure we update all information, the CRC
4053 * mechanism doesn't look at P2P attributes.
4054 */
4055 ifmgd->beacon_crc_valid = false;
4056 }
4057 } else if (sdata->u.mgd.p2p_noa_index != -1) {
4058 /* noa_attr not found and we had valid noa_attr before */
4059 sdata->u.mgd.p2p_noa_index = -1;
4060 memset(&bss_conf->p2p_noa_attr, 0, sizeof(bss_conf->p2p_noa_attr));
488dd7b5 4061 changed |= BSS_CHANGED_P2P_PS;
488dd7b5
JB		 4062 ifmgd->beacon_crc_valid = false;
4063 }
4064 }
4065
0c21e632
LC		 4066 if (ifmgd->csa_waiting_bcn)
4067 ieee80211_chswitch_post_beacon(sdata);
4068
2ecc3905
AB		 4069 /*
4070 * Update beacon timing and dtim count on every beacon appearance. This
4071 * will allow the driver to use the most updated values. Do it before
4072 * comparing this one with last received beacon.
4073 * IMPORTANT: These parameters would possibly be out of sync by the time
4074 * the driver will use them. The synchronized view is currently
4075 * guaranteed only in certain callbacks.
4076 */
30686bf7 4077 if (ieee80211_hw_check(&local->hw, TIMING_BEACON_ONLY)) {
2ecc3905
AB		 4078 sdata->vif.bss_conf.sync_tsf =
4079 le64_to_cpu(mgmt->u.beacon.timestamp);
4080 sdata->vif.bss_conf.sync_device_ts =
4081 rx_status->device_timestamp;
78ac51f8 4082 sdata->vif.bss_conf.sync_dtim_count = elems.dtim_count;
2ecc3905
AB		 4083 }
4084
d8ec4433 4085 if (ncrc == ifmgd->beacon_crc && ifmgd->beacon_crc_valid)
8d61ffa5 4086 return;
30196673 4087 ifmgd->beacon_crc = ncrc;
d8ec4433 4088 ifmgd->beacon_crc_valid = true;
30196673 4089
4abb52a4 4090 ieee80211_rx_bss_info(sdata, mgmt, len, rx_status);
7d25745d 4091
d70b7616 4092 ieee80211_sta_process_chanswitch(sdata, rx_status->mactime,
2ba45384 4093 rx_status->device_timestamp,
d70b7616
JB		 4094 &elems, true);
4095
095d81ce
JB		 4096 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_WMM) &&
4097 ieee80211_sta_wmm_params(local, sdata, elems.wmm_param,
41cbb0f5
LC		 4098 elems.wmm_param_len,
4099 elems.mu_edca_param_set))
7d25745d
JB		 4100 changed |= BSS_CHANGED_QOS;
4101
c65dd147
EG		 4102 /*
4103 * If we haven't had a beacon before, tell the driver about the
ef429dad 4104 * DTIM period (and beacon timing if desired) now.
c65dd147 4105 */
989c6505 4106 if (!ifmgd->have_beacon) {
c65dd147 4107 /* a few bogus AP send dtim_period = 0 or no TIM IE */
78ac51f8 4108 bss_conf->dtim_period = elems.dtim_period ?: 1;
ef429dad 4109
989c6505
AB		 4110 changed |= BSS_CHANGED_BEACON_INFO;
4111 ifmgd->have_beacon = true;
482a9c74
AB		 4112
4113 mutex_lock(&local->iflist_mtx);
4a733ef1 4114 ieee80211_recalc_ps(local);
482a9c74
AB		 4115 mutex_unlock(&local->iflist_mtx);
4116
ce857888 4117 ieee80211_recalc_ps_vif(sdata);
c65dd147
EG		 4118 }
4119
1946bed9 4120 if (elems.erp_info) {
7a5158ef
JB		 4121 erp_valid = true;
4122 erp_value = elems.erp_info[0];
4123 } else {
4124 erp_valid = false;
50c4afb9 4125 }
7a5158ef
JB		 4126 changed |= ieee80211_handle_bss_capability(sdata,
4127 le16_to_cpu(mgmt->u.beacon.capab_info),
4128 erp_valid, erp_value);
f0706e82 4129
1128958d 4130 mutex_lock(&local->sta_mtx);
bee7f586
JB		 4131 sta = sta_info_get(sdata, bssid);
4132
c9d3245e
JC		 4133 changed |= ieee80211_recalc_twt_req(sdata, sta, &elems);
4134
2a333a0d
JB		 4135 if (ieee80211_config_bw(sdata, sta, elems.ht_cap_elem,
4136 elems.vht_cap_elem, elems.ht_operation,
41cbb0f5
LC		 4137 elems.vht_operation, elems.he_operation,
4138 bssid, &changed)) {
30eb1dc2 4139 mutex_unlock(&local->sta_mtx);
89f774e6
JB		 4140 sdata_info(sdata,
4141 "failed to follow AP %pM bandwidth change, disconnect\n",
4142 bssid);
30eb1dc2
JB		 4143 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
4144 WLAN_REASON_DEAUTH_LEAVING,
4145 true, deauth_buf);
a90faa9d
EG		 4146 ieee80211_report_disconnect(sdata, deauth_buf,
4147 sizeof(deauth_buf), true,
4148 WLAN_REASON_DEAUTH_LEAVING);
8d61ffa5 4149 return;
30eb1dc2 4150 }
bee7f586
JB		 4151
4152 if (sta && elems.opmode_notif)
4153 ieee80211_vht_handle_opmode(sdata, sta, *elems.opmode_notif,
cf1e05c6 4154 rx_status->band);
1128958d 4155 mutex_unlock(&local->sta_mtx);
d3c990fb 4156
24a4e400
SG		 4157 changed |= ieee80211_handle_pwr_constr(sdata, chan, mgmt,
4158 elems.country_elem,
4159 elems.country_elem_len,
c8d65917
SG		 4160 elems.pwr_constr_elem,
4161 elems.cisco_dtpc_elem);
3f2355cb 4162
471b3efd 4163 ieee80211_bss_info_change_notify(sdata, changed);
f0706e82
JB		 4164}
4165
1fa57d01
JB		 4166void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
4167 struct sk_buff *skb)
f0706e82
JB		 4168{
4169 struct ieee80211_rx_status *rx_status;
f0706e82
JB		 4170 struct ieee80211_mgmt *mgmt;
4171 u16 fc;
1b3a2e49
JB		 4172 struct ieee802_11_elems elems;
4173 int ies_len;
f0706e82 4174
f0706e82
JB		 4175 rx_status = (struct ieee80211_rx_status *) skb->cb;
4176 mgmt = (struct ieee80211_mgmt *) skb->data;
4177 fc = le16_to_cpu(mgmt->frame_control);
4178
8d61ffa5 4179 sdata_lock(sdata);
77fdaa12 4180
66e67e41
JB		 4181 switch (fc & IEEE80211_FCTL_STYPE) {
4182 case IEEE80211_STYPE_BEACON:
8d61ffa5 4183 ieee80211_rx_mgmt_beacon(sdata, mgmt, skb->len, rx_status);
66e67e41
JB		 4184 break;
4185 case IEEE80211_STYPE_PROBE_RESP:
4186 ieee80211_rx_mgmt_probe_resp(sdata, skb);
4187 break;
4188 case IEEE80211_STYPE_AUTH:
8d61ffa5 4189 ieee80211_rx_mgmt_auth(sdata, mgmt, skb->len);
66e67e41
JB		 4190 break;
4191 case IEEE80211_STYPE_DEAUTH:
8d61ffa5 4192 ieee80211_rx_mgmt_deauth(sdata, mgmt, skb->len);
66e67e41
JB		 4193 break;
4194 case IEEE80211_STYPE_DISASSOC:
8d61ffa5 4195 ieee80211_rx_mgmt_disassoc(sdata, mgmt, skb->len);
66e67e41
JB		 4196 break;
4197 case IEEE80211_STYPE_ASSOC_RESP:
4198 case IEEE80211_STYPE_REASSOC_RESP:
8d61ffa5 4199 ieee80211_rx_mgmt_assoc_resp(sdata, mgmt, skb->len);
66e67e41
JB		 4200 break;
4201 case IEEE80211_STYPE_ACTION:
37799e52 4202 if (mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT) {
1b3a2e49
JB		 4203 ies_len = skb->len -
4204 offsetof(struct ieee80211_mgmt,
4205 u.action.u.chan_switch.variable);
37799e52
JB		 4206
4207 if (ies_len < 0)
4208 break;
4209
4abb52a4 4210 /* CSA IE cannot be overridden, no need for BSSID */
37799e52
JB		 4211 ieee802_11_parse_elems(
4212 mgmt->u.action.u.chan_switch.variable,
4abb52a4 4213 ies_len, true, &elems, mgmt->bssid, NULL);
37799e52
JB		 4214
4215 if (elems.parse_error)
4216 break;
4217
1b3a2e49 4218 ieee80211_sta_process_chanswitch(sdata,
2ba45384
LC		 4219 rx_status->mactime,
4220 rx_status->device_timestamp,
4221 &elems, false);
1b3a2e49
JB		 4222 } else if (mgmt->u.action.category == WLAN_CATEGORY_PUBLIC) {
4223 ies_len = skb->len -
4224 offsetof(struct ieee80211_mgmt,
4225 u.action.u.ext_chan_switch.variable);
4226
4227 if (ies_len < 0)
4228 break;
4229
4abb52a4
SS		 4230 /*
4231 * extended CSA IE can't be overridden, no need for
4232 * BSSID
4233 */
1b3a2e49
JB		 4234 ieee802_11_parse_elems(
4235 mgmt->u.action.u.ext_chan_switch.variable,
4abb52a4 4236 ies_len, true, &elems, mgmt->bssid, NULL);
1b3a2e49
JB		 4237
4238 if (elems.parse_error)
4239 break;
4240
4241 /* for the handling code pretend this was also an IE */
4242 elems.ext_chansw_ie =
4243 &mgmt->u.action.u.ext_chan_switch.data;
4244
66e67e41 4245 ieee80211_sta_process_chanswitch(sdata,
2ba45384
LC		 4246 rx_status->mactime,
4247 rx_status->device_timestamp,
4248 &elems, false);
77fdaa12 4249 }
37799e52 4250 break;
77fdaa12 4251 }
8d61ffa5 4252 sdata_unlock(sdata);
f0706e82
JB		 4253}
4254
34f11cd3 4255static void ieee80211_sta_timer(struct timer_list *t)
f0706e82 4256{
60f8b39c 4257 struct ieee80211_sub_if_data *sdata =
34f11cd3 4258 from_timer(sdata, t, u.mgd.timer);
5bb644a0 4259
9b7d72c1 4260 ieee80211_queue_work(&sdata->local->hw, &sdata->work);
f0706e82
JB		 4261}
4262
04ac3c0e 4263static void ieee80211_sta_connection_lost(struct ieee80211_sub_if_data *sdata,
6b684db1 4264 u8 *bssid, u8 reason, bool tx)
04ac3c0e 4265{
6ae16775 4266 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
04ac3c0e 4267
37ad3888 4268 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, reason,
6b684db1 4269 tx, frame_buf);
37ad3888 4270
a90faa9d
EG		 4271 ieee80211_report_disconnect(sdata, frame_buf, sizeof(frame_buf), true,
4272 reason);
04ac3c0e
FF		 4273}
4274
46cad4b7 4275static int ieee80211_auth(struct ieee80211_sub_if_data *sdata)
66e67e41
JB		 4276{
4277 struct ieee80211_local *local = sdata->local;
4278 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4279 struct ieee80211_mgd_auth_data *auth_data = ifmgd->auth_data;
1672c0e3 4280 u32 tx_flags = 0;
46cad4b7
JB		 4281 u16 trans = 1;
4282 u16 status = 0;
d4e36e55 4283 u16 prepare_tx_duration = 0;
66e67e41 4284
8d61ffa5 4285 sdata_assert_lock(sdata);
66e67e41
JB		 4286
4287 if (WARN_ON_ONCE(!auth_data))
4288 return -EINVAL;
4289
66e67e41
JB		 4290 auth_data->tries++;
4291
4292 if (auth_data->tries > IEEE80211_AUTH_MAX_TRIES) {
bdcbd8e0
JB		 4293 sdata_info(sdata, "authentication with %pM timed out\n",
4294 auth_data->bss->bssid);
66e67e41
JB		 4295
4296 /*
4297 * Most likely AP is not in the range so remove the
4298 * bss struct for that AP.
4299 */
4300 cfg80211_unlink_bss(local->hw.wiphy, auth_data->bss);
4301
4302 return -ETIMEDOUT;
4303 }
4304
d4e36e55
IP		 4305 if (auth_data->algorithm == WLAN_AUTH_SAE)
4306 prepare_tx_duration =
4307 jiffies_to_msecs(IEEE80211_AUTH_TIMEOUT_SAE);
4308
4309 drv_mgd_prepare_tx(local, sdata, prepare_tx_duration);
a1845fc7 4310
46cad4b7
JB		 4311 sdata_info(sdata, "send auth to %pM (try %d/%d)\n",
4312 auth_data->bss->bssid, auth_data->tries,
4313 IEEE80211_AUTH_MAX_TRIES);
66e67e41 4314
46cad4b7 4315 auth_data->expected_transaction = 2;
6b8ece3a 4316
46cad4b7
JB		 4317 if (auth_data->algorithm == WLAN_AUTH_SAE) {
4318 trans = auth_data->sae_trans;
4319 status = auth_data->sae_status;
4320 auth_data->expected_transaction = trans;
4321 }
66e67e41 4322
46cad4b7
JB		 4323 if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS))
4324 tx_flags = IEEE80211_TX_CTL_REQ_TX_STATUS |
4325 IEEE80211_TX_INTFL_MLME_CONN_TX;
66e67e41 4326
46cad4b7
JB		 4327 ieee80211_send_auth(sdata, trans, auth_data->algorithm, status,
4328 auth_data->data, auth_data->data_len,
4329 auth_data->bss->bssid,
4330 auth_data->bss->bssid, NULL, 0, 0,
4331 tx_flags);
66e67e41 4332
6211dd12 4333 if (tx_flags == 0) {
407879b6
IP		 4334 if (auth_data->algorithm == WLAN_AUTH_SAE)
4335 auth_data->timeout = jiffies +
4336 IEEE80211_AUTH_TIMEOUT_SAE;
4337 else
4338 auth_data->timeout = jiffies + IEEE80211_AUTH_TIMEOUT;
89afe614 4339 } else {
cb236d2d
JB		 4340 auth_data->timeout =
4341 round_jiffies_up(jiffies + IEEE80211_AUTH_TIMEOUT_LONG);
1672c0e3 4342 }
66e67e41 4343
407879b6
IP		 4344 auth_data->timeout_started = true;
4345 run_again(sdata, auth_data->timeout);
4346
66e67e41
JB		 4347 return 0;
4348}
4349
4350static int ieee80211_do_assoc(struct ieee80211_sub_if_data *sdata)
4351{
4352 struct ieee80211_mgd_assoc_data *assoc_data = sdata->u.mgd.assoc_data;
4353 struct ieee80211_local *local = sdata->local;
4354
8d61ffa5 4355 sdata_assert_lock(sdata);
66e67e41 4356
66e67e41
JB		 4357 assoc_data->tries++;
4358 if (assoc_data->tries > IEEE80211_ASSOC_MAX_TRIES) {
bdcbd8e0
JB		 4359 sdata_info(sdata, "association with %pM timed out\n",
4360 assoc_data->bss->bssid);
66e67e41
JB		 4361
4362 /*
4363 * Most likely AP is not in the range so remove the
4364 * bss struct for that AP.
4365 */
4366 cfg80211_unlink_bss(local->hw.wiphy, assoc_data->bss);
4367
4368 return -ETIMEDOUT;
4369 }
4370
bdcbd8e0
JB		 4371 sdata_info(sdata, "associate with %pM (try %d/%d)\n",
4372 assoc_data->bss->bssid, assoc_data->tries,
4373 IEEE80211_ASSOC_MAX_TRIES);
66e67e41
JB		 4374 ieee80211_send_assoc(sdata);
4375
30686bf7 4376 if (!ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) {
1672c0e3 4377 assoc_data->timeout = jiffies + IEEE80211_ASSOC_TIMEOUT;
89afe614 4378 assoc_data->timeout_started = true;
8d61ffa5 4379 run_again(sdata, assoc_data->timeout);
89afe614 4380 } else {
cb236d2d
JB		 4381 assoc_data->timeout =
4382 round_jiffies_up(jiffies +
4383 IEEE80211_ASSOC_TIMEOUT_LONG);
4384 assoc_data->timeout_started = true;
4385 run_again(sdata, assoc_data->timeout);
1672c0e3 4386 }
66e67e41
JB		 4387
4388 return 0;
4389}
4390
1672c0e3
JB		 4391void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata,
4392 __le16 fc, bool acked)
4393{
4394 struct ieee80211_local *local = sdata->local;
4395
4396 sdata->u.mgd.status_fc = fc;
4397 sdata->u.mgd.status_acked = acked;
4398 sdata->u.mgd.status_received = true;
4399
4400 ieee80211_queue_work(&local->hw, &sdata->work);
4401}
4402
1fa57d01 4403void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata)
9c6bd790 4404{
9c6bd790 4405 struct ieee80211_local *local = sdata->local;
1fa57d01 4406 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
9c6bd790 4407
8d61ffa5 4408 sdata_lock(sdata);
77fdaa12 4409
1672c0e3
JB		 4410 if (ifmgd->status_received) {
4411 __le16 fc = ifmgd->status_fc;
4412 bool status_acked = ifmgd->status_acked;
4413
4414 ifmgd->status_received = false;
46cad4b7 4415 if (ifmgd->auth_data && ieee80211_is_auth(fc)) {
1672c0e3 4416 if (status_acked) {
407879b6
IP		 4417 if (ifmgd->auth_data->algorithm ==
4418 WLAN_AUTH_SAE)
4419 ifmgd->auth_data->timeout =
4420 jiffies +
4421 IEEE80211_AUTH_TIMEOUT_SAE;
4422 else
4423 ifmgd->auth_data->timeout =
4424 jiffies +
4425 IEEE80211_AUTH_TIMEOUT_SHORT;
8d61ffa5 4426 run_again(sdata, ifmgd->auth_data->timeout);
1672c0e3
JB		 4427 } else {
4428 ifmgd->auth_data->timeout = jiffies - 1;
4429 }
89afe614 4430 ifmgd->auth_data->timeout_started = true;
1672c0e3
JB		 4431 } else if (ifmgd->assoc_data &&
4432 (ieee80211_is_assoc_req(fc) ||
4433 ieee80211_is_reassoc_req(fc))) {
4434 if (status_acked) {
4435 ifmgd->assoc_data->timeout =
4436 jiffies + IEEE80211_ASSOC_TIMEOUT_SHORT;
8d61ffa5 4437 run_again(sdata, ifmgd->assoc_data->timeout);
1672c0e3
JB		 4438 } else {
4439 ifmgd->assoc_data->timeout = jiffies - 1;
4440 }
89afe614 4441 ifmgd->assoc_data->timeout_started = true;
1672c0e3
JB		 4442 }
4443 }
4444
89afe614 4445 if (ifmgd->auth_data && ifmgd->auth_data->timeout_started &&
66e67e41
JB		 4446 time_after(jiffies, ifmgd->auth_data->timeout)) {
4447 if (ifmgd->auth_data->done) {
4448 /*
4449 * ok ... we waited for assoc but userspace didn't,
4450 * so let's just kill the auth data
4451 */
4452 ieee80211_destroy_auth_data(sdata, false);
46cad4b7 4453 } else if (ieee80211_auth(sdata)) {
66e67e41 4454 u8 bssid[ETH_ALEN];
a9409093
EG		 4455 struct ieee80211_event event = {
4456 .type = MLME_EVENT,
4457 .u.mlme.data = AUTH_EVENT,
4458 .u.mlme.status = MLME_TIMEOUT,
4459 };
66e67e41
JB		 4460
4461 memcpy(bssid, ifmgd->auth_data->bss->bssid, ETH_ALEN);
4462
4463 ieee80211_destroy_auth_data(sdata, false);
4464
6ff57cf8 4465 cfg80211_auth_timeout(sdata->dev, bssid);
a9409093 4466 drv_event_callback(sdata->local, sdata, &event);
66e67e41 4467 }
89afe614 4468 } else if (ifmgd->auth_data && ifmgd->auth_data->timeout_started)
8d61ffa5 4469 run_again(sdata, ifmgd->auth_data->timeout);
66e67e41 4470
89afe614 4471 if (ifmgd->assoc_data && ifmgd->assoc_data->timeout_started &&
66e67e41 4472 time_after(jiffies, ifmgd->assoc_data->timeout)) {
989c6505 4473 if ((ifmgd->assoc_data->need_beacon && !ifmgd->have_beacon) ||
66e67e41 4474 ieee80211_do_assoc(sdata)) {
959867fa 4475 struct cfg80211_bss *bss = ifmgd->assoc_data->bss;
d0d1a12f
EG		 4476 struct ieee80211_event event = {
4477 .type = MLME_EVENT,
4478 .u.mlme.data = ASSOC_EVENT,
4479 .u.mlme.status = MLME_TIMEOUT,
4480 };
66e67e41 4481
e6f462df 4482 ieee80211_destroy_assoc_data(sdata, false, false);
959867fa 4483 cfg80211_assoc_timeout(sdata->dev, bss);
d0d1a12f 4484 drv_event_callback(sdata->local, sdata, &event);
66e67e41 4485 }
89afe614 4486 } else if (ifmgd->assoc_data && ifmgd->assoc_data->timeout_started)
8d61ffa5 4487 run_again(sdata, ifmgd->assoc_data->timeout);
66e67e41 4488
392b9ffb 4489 if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL &&
b291ba11 4490 ifmgd->associated) {
a43abf29 4491 u8 bssid[ETH_ALEN];
72a8a3ed 4492 int max_tries;
a43abf29 4493
0c1ad2ca 4494 memcpy(bssid, ifmgd->associated->bssid, ETH_ALEN);
4e5ff376 4495
30686bf7 4496 if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS))
180205bd 4497 max_tries = max_nullfunc_tries;
72a8a3ed 4498 else
180205bd 4499 max_tries = max_probe_tries;
72a8a3ed 4500
4e5ff376
FF		 4501 /* ACK received for nullfunc probing frame */
4502 if (!ifmgd->probe_send_count)
4503 ieee80211_reset_ap_probe(sdata);
04ac3c0e
FF		 4504 else if (ifmgd->nullfunc_failed) {
4505 if (ifmgd->probe_send_count < max_tries) {
bdcbd8e0
JB		 4506 mlme_dbg(sdata,
4507 "No ack for nullfunc frame to AP %pM, try %d/%i\n",
4508 bssid, ifmgd->probe_send_count,
4509 max_tries);
04ac3c0e
FF		 4510 ieee80211_mgd_probe_ap_send(sdata);
4511 } else {
bdcbd8e0
JB		 4512 mlme_dbg(sdata,
4513 "No ack for nullfunc frame to AP %pM, disconnecting.\n",
4514 bssid);
95acac61 4515 ieee80211_sta_connection_lost(sdata, bssid,
6b684db1
JB		 4516 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY,
4517 false);
04ac3c0e
FF		 4518 }
4519 } else if (time_is_after_jiffies(ifmgd->probe_timeout))
8d61ffa5 4520 run_again(sdata, ifmgd->probe_timeout);
30686bf7 4521 else if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) {
bdcbd8e0
JB		 4522 mlme_dbg(sdata,
4523 "Failed to send nullfunc to AP %pM after %dms, disconnecting\n",
4524 bssid, probe_wait_ms);
95acac61 4525 ieee80211_sta_connection_lost(sdata, bssid,
6b684db1 4526 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, false);
04ac3c0e 4527 } else if (ifmgd->probe_send_count < max_tries) {
bdcbd8e0
JB		 4528 mlme_dbg(sdata,
4529 "No probe response from AP %pM after %dms, try %d/%i\n",
4530 bssid, probe_wait_ms,
4531 ifmgd->probe_send_count, max_tries);
a43abf29
ML		 4532 ieee80211_mgd_probe_ap_send(sdata);
4533 } else {
b291ba11
JB		 4534 /*
4535 * We actually lost the connection ... or did we?
4536 * Let's make sure!
4537 */
89f774e6
JB		 4538 mlme_dbg(sdata,
4539 "No probe response from AP %pM after %dms, disconnecting.\n",
4540 bssid, probe_wait_ms);
04ac3c0e 4541
95acac61 4542 ieee80211_sta_connection_lost(sdata, bssid,
6b684db1 4543 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, false);
b291ba11
JB		 4544 }
4545 }
4546
8d61ffa5 4547 sdata_unlock(sdata);
f0706e82
JB		 4548}
4549
34f11cd3 4550static void ieee80211_sta_bcn_mon_timer(struct timer_list *t)
b291ba11
JB		 4551{
4552 struct ieee80211_sub_if_data *sdata =
34f11cd3 4553 from_timer(sdata, t, u.mgd.bcn_mon_timer);
0c21e632 4554 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
b291ba11 4555
0c21e632 4556 if (sdata->vif.csa_active && !ifmgd->csa_waiting_bcn)
e5593f56
MK		 4557 return;
4558
682bd38b 4559 sdata->u.mgd.connection_loss = false;
1e4dcd01
JO		 4560 ieee80211_queue_work(&sdata->local->hw,
4561 &sdata->u.mgd.beacon_connection_loss_work);
b291ba11
JB		 4562}
4563
34f11cd3 4564static void ieee80211_sta_conn_mon_timer(struct timer_list *t)
b291ba11
JB		 4565{
4566 struct ieee80211_sub_if_data *sdata =
34f11cd3 4567 from_timer(sdata, t, u.mgd.conn_mon_timer);
b291ba11
JB		 4568 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4569 struct ieee80211_local *local = sdata->local;
4570
0c21e632 4571 if (sdata->vif.csa_active && !ifmgd->csa_waiting_bcn)
e5593f56
MK		 4572 return;
4573
42935eca 4574 ieee80211_queue_work(&local->hw, &ifmgd->monitor_work);
b291ba11
JB		 4575}
4576
4577static void ieee80211_sta_monitor_work(struct work_struct *work)
4578{
4579 struct ieee80211_sub_if_data *sdata =
4580 container_of(work, struct ieee80211_sub_if_data,
4581 u.mgd.monitor_work);
4582
4583 ieee80211_mgd_probe_ap(sdata, false);
4584}
4585
9c6bd790
JB		 4586static void ieee80211_restart_sta_timer(struct ieee80211_sub_if_data *sdata)
4587{
ad935687 4588 if (sdata->vif.type == NL80211_IFTYPE_STATION) {
925e64c3 4589 __ieee80211_stop_poll(sdata);
ad935687 4590
b291ba11 4591 /* let's probe the connection once */
30686bf7 4592 if (!ieee80211_hw_check(&sdata->local->hw, CONNECTION_MONITOR))
494f1fe5
EP		 4593 ieee80211_queue_work(&sdata->local->hw,
4594 &sdata->u.mgd.monitor_work);
ad935687 4595 }
9c6bd790 4596}
f0706e82 4597
b8360ab8 4598#ifdef CONFIG_PM
1a1cb744
JB		 4599void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata)
4600{
4601 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4602 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
4603
4604 sdata_lock(sdata);
4605
c52666ae
EG		 4606 if (ifmgd->auth_data || ifmgd->assoc_data) {
4607 const u8 *bssid = ifmgd->auth_data ?
4608 ifmgd->auth_data->bss->bssid :
4609 ifmgd->assoc_data->bss->bssid;
4610
1a1cb744 4611 /*
c52666ae
EG		 4612 * If we are trying to authenticate / associate while suspending,
4613 * cfg80211 won't know and won't actually abort those attempts,
4614 * thus we need to do that ourselves.
1a1cb744 4615 */
4b08d1b6 4616 ieee80211_send_deauth_disassoc(sdata, bssid, bssid,
1a1cb744
JB		 4617 IEEE80211_STYPE_DEAUTH,
4618 WLAN_REASON_DEAUTH_LEAVING,
4619 false, frame_buf);
c52666ae 4620 if (ifmgd->assoc_data)
e6f462df 4621 ieee80211_destroy_assoc_data(sdata, false, true);
c52666ae
EG		 4622 if (ifmgd->auth_data)
4623 ieee80211_destroy_auth_data(sdata, false);
1a1cb744
JB		 4624 cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf,
4625 IEEE80211_DEAUTH_FRAME_LEN);
4626 }
4627
be72afe0
JB		 4628 /* This is a bit of a hack - we should find a better and more generic
4629 * solution to this. Normally when suspending, cfg80211 will in fact
4630 * deauthenticate. However, it doesn't (and cannot) stop an ongoing
4631 * auth (not so important) or assoc (this is the problem) process.
4632 *
4633 * As a consequence, it can happen that we are in the process of both
4634 * associating and suspending, and receive an association response
4635 * after cfg80211 has checked if it needs to disconnect, but before
4636 * we actually set the flag to drop incoming frames. This will then
4637 * cause the workqueue flush to process the association response in
4638 * the suspend, resulting in a successful association just before it
4639 * tries to remove the interface from the driver, which now though
4640 * has a channel context assigned ... this results in issues.
4641 *
4642 * To work around this (for now) simply deauth here again if we're
4643 * now connected.
4644 */
4645 if (ifmgd->associated && !sdata->local->wowlan) {
4646 u8 bssid[ETH_ALEN];
4647 struct cfg80211_deauth_request req = {
4648 .reason_code = WLAN_REASON_DEAUTH_LEAVING,
4649 .bssid = bssid,
4650 };
4651
4652 memcpy(bssid, ifmgd->associated->bssid, ETH_ALEN);
4653 ieee80211_mgd_deauth(sdata, &req);
4654 }
4655
1a1cb744
JB		 4656 sdata_unlock(sdata);
4657}
4658
b8360ab8
JB		 4659void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata)
4660{
4661 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4662
8d61ffa5 4663 sdata_lock(sdata);
b8360ab8 4664 if (!ifmgd->associated) {
8d61ffa5 4665 sdata_unlock(sdata);
b8360ab8
JB		 4666 return;
4667 }
4668
4669 if (sdata->flags & IEEE80211_SDATA_DISCONNECT_RESUME) {
4670 sdata->flags &= ~IEEE80211_SDATA_DISCONNECT_RESUME;
4671 mlme_dbg(sdata, "driver requested disconnect after resume\n");
4672 ieee80211_sta_connection_lost(sdata,
4673 ifmgd->associated->bssid,
4674 WLAN_REASON_UNSPECIFIED,
4675 true);
8d61ffa5 4676 sdata_unlock(sdata);
b8360ab8
JB		 4677 return;
4678 }
8d61ffa5 4679 sdata_unlock(sdata);
b8360ab8
JB		 4680}
4681#endif
4682
9c6bd790
JB		 4683/* interface setup */
4684void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata)
f0706e82 4685{
46900298 4686 struct ieee80211_if_managed *ifmgd;
988c0f72 4687
46900298 4688 ifmgd = &sdata->u.mgd;
b291ba11 4689 INIT_WORK(&ifmgd->monitor_work, ieee80211_sta_monitor_work);
46900298 4690 INIT_WORK(&ifmgd->chswitch_work, ieee80211_chswitch_work);
1e4dcd01
JO		 4691 INIT_WORK(&ifmgd->beacon_connection_loss_work,
4692 ieee80211_beacon_connection_loss_work);
882a7c69
JB		 4693 INIT_WORK(&ifmgd->csa_connection_drop_work,
4694 ieee80211_csa_connection_drop_work);
687da132 4695 INIT_WORK(&ifmgd->request_smps_work, ieee80211_request_smps_mgd_work);
81dd2b88
AN		 4696 INIT_DELAYED_WORK(&ifmgd->tdls_peer_del_work,
4697 ieee80211_tdls_peer_del_work);
34f11cd3
KC		 4698 timer_setup(&ifmgd->timer, ieee80211_sta_timer, 0);
4699 timer_setup(&ifmgd->bcn_mon_timer, ieee80211_sta_bcn_mon_timer, 0);
4700 timer_setup(&ifmgd->conn_mon_timer, ieee80211_sta_conn_mon_timer, 0);
4701 timer_setup(&ifmgd->chswitch_timer, ieee80211_chswitch_timer, 0);
02219b3a
JB		 4702 INIT_DELAYED_WORK(&ifmgd->tx_tspec_wk,
4703 ieee80211_sta_handle_tspec_ac_params_wk);
9c6bd790 4704
ab1faead 4705 ifmgd->flags = 0;
1478acb3 4706 ifmgd->powersave = sdata->wdev.ps;
219c3867
AB		 4707 ifmgd->uapsd_queues = sdata->local->hw.uapsd_queues;
4708 ifmgd->uapsd_max_sp_len = sdata->local->hw.uapsd_max_sp_len;
67baf663 4709 ifmgd->p2p_noa_index = -1;
bbbdff9e 4710
0d8614b4 4711 if (sdata->local->hw.wiphy->features & NL80211_FEATURE_DYNAMIC_SMPS)
0f78231b
JB		 4712 ifmgd->req_smps = IEEE80211_SMPS_AUTOMATIC;
4713 else
4714 ifmgd->req_smps = IEEE80211_SMPS_OFF;
1277b4a9
LK		 4715
4716 /* Setup TDLS data */
4717 spin_lock_init(&ifmgd->teardown_lock);
4718 ifmgd->teardown_skb = NULL;
4719 ifmgd->orig_teardown_skb = NULL;
f0706e82
JB		 4720}
4721
77fdaa12
JB		 4722/* scan finished notification */
4723void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local)
60f8b39c 4724{
31ee67a1 4725 struct ieee80211_sub_if_data *sdata;
60f8b39c 4726
77fdaa12
JB		 4727 /* Restart STA timers */
4728 rcu_read_lock();
370bd005
BG		 4729 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
4730 if (ieee80211_sdata_running(sdata))
4731 ieee80211_restart_sta_timer(sdata);
4732 }
77fdaa12
JB		 4733 rcu_read_unlock();
4734}
60f8b39c 4735
f2d9d270
JB		 4736static u8 ieee80211_ht_vht_rx_chains(struct ieee80211_sub_if_data *sdata,
4737 struct cfg80211_bss *cbss)
4738{
4739 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4740 const u8 *ht_cap_ie, *vht_cap_ie;
4741 const struct ieee80211_ht_cap *ht_cap;
4742 const struct ieee80211_vht_cap *vht_cap;
4743 u8 chains = 1;
4744
4745 if (ifmgd->flags & IEEE80211_STA_DISABLE_HT)
4746 return chains;
4747
9caf0364 4748 ht_cap_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_HT_CAPABILITY);
f2d9d270
JB		 4749 if (ht_cap_ie && ht_cap_ie[1] >= sizeof(*ht_cap)) {
4750 ht_cap = (void *)(ht_cap_ie + 2);
4751 chains = ieee80211_mcs_to_chains(&ht_cap->mcs);
4752 /*
4753 * TODO: use "Tx Maximum Number Spatial Streams Supported" and
4754 * "Tx Unequal Modulation Supported" fields.
4755 */
4756 }
4757
4758 if (ifmgd->flags & IEEE80211_STA_DISABLE_VHT)
4759 return chains;
4760
9caf0364 4761 vht_cap_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_VHT_CAPABILITY);
f2d9d270
JB		 4762 if (vht_cap_ie && vht_cap_ie[1] >= sizeof(*vht_cap)) {
4763 u8 nss;
4764 u16 tx_mcs_map;
4765
4766 vht_cap = (void *)(vht_cap_ie + 2);
4767 tx_mcs_map = le16_to_cpu(vht_cap->supp_mcs.tx_mcs_map);
4768 for (nss = 8; nss > 0; nss--) {
4769 if (((tx_mcs_map >> (2 * (nss - 1))) & 3) !=
4770 IEEE80211_VHT_MCS_NOT_SUPPORTED)
4771 break;
4772 }
4773 /* TODO: use "Tx Highest Supported Long GI Data Rate" field? */
4774 chains = max(chains, nss);
4775 }
4776
4777 return chains;
4778}
4779
41cbb0f5
LC		 4780static bool
4781ieee80211_verify_sta_he_mcs_support(struct ieee80211_supported_band *sband,
4782 const struct ieee80211_he_operation *he_op)
4783{
4784 const struct ieee80211_sta_he_cap *sta_he_cap =
4785 ieee80211_get_he_sta_cap(sband);
47aa7861 4786 u16 ap_min_req_set;
41cbb0f5
LC		 4787 int i;
4788
4789 if (!sta_he_cap || !he_op)
4790 return false;
4791
47aa7861
GS		 4792 ap_min_req_set = le16_to_cpu(he_op->he_mcs_nss_set);
4793
41cbb0f5
LC		 4794 /* Need to go over for 80MHz, 160MHz and for 80+80 */
4795 for (i = 0; i < 3; i++) {
4796 const struct ieee80211_he_mcs_nss_supp *sta_mcs_nss_supp =
4797 &sta_he_cap->he_mcs_nss_supp;
4798 u16 sta_mcs_map_rx =
4799 le16_to_cpu(((__le16 *)sta_mcs_nss_supp)[2 * i]);
4800 u16 sta_mcs_map_tx =
4801 le16_to_cpu(((__le16 *)sta_mcs_nss_supp)[2 * i + 1]);
4802 u8 nss;
4803 bool verified = true;
4804
4805 /*
4806 * For each band there is a maximum of 8 spatial streams
4807 * possible. Each of the sta_mcs_map_* is a 16-bit struct built
4808 * of 2 bits per NSS (1-8), with the values defined in enum
4809 * ieee80211_he_mcs_support. Need to make sure STA TX and RX
4810 * capabilities aren't less than the AP's minimum requirements
4811 * for this HE BSS per SS.
4812 * It is enough to find one such band that meets the reqs.
4813 */
4814 for (nss = 8; nss > 0; nss--) {
4815 u8 sta_rx_val = (sta_mcs_map_rx >> (2 * (nss - 1))) & 3;
4816 u8 sta_tx_val = (sta_mcs_map_tx >> (2 * (nss - 1))) & 3;
4817 u8 ap_val = (ap_min_req_set >> (2 * (nss - 1))) & 3;
4818
4819 if (ap_val == IEEE80211_HE_MCS_NOT_SUPPORTED)
4820 continue;
4821
4822 /*
4823 * Make sure the HE AP doesn't require MCSs that aren't
4824 * supported by the client
4825 */
4826 if (sta_rx_val == IEEE80211_HE_MCS_NOT_SUPPORTED ||
4827 sta_tx_val == IEEE80211_HE_MCS_NOT_SUPPORTED ||
4828 (ap_val > sta_rx_val) || (ap_val > sta_tx_val)) {
4829 verified = false;
4830 break;
4831 }
4832 }
4833
4834 if (verified)
4835 return true;
4836 }
4837
4838 /* If here, STA doesn't meet AP's HE min requirements */
4839 return false;
4840}
4841
b17166a7
JB		 4842static int ieee80211_prep_channel(struct ieee80211_sub_if_data *sdata,
4843 struct cfg80211_bss *cbss)
a1cf775d
JB		 4844{
4845 struct ieee80211_local *local = sdata->local;
4846 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
53b954ee 4847 const struct ieee80211_ht_cap *ht_cap = NULL;
24398e39 4848 const struct ieee80211_ht_operation *ht_oper = NULL;
f2d9d270 4849 const struct ieee80211_vht_operation *vht_oper = NULL;
41cbb0f5 4850 const struct ieee80211_he_operation *he_oper = NULL;
24398e39 4851 struct ieee80211_supported_band *sband;
4bf88530 4852 struct cfg80211_chan_def chandef;
57fa5e85 4853 bool is_6ghz = cbss->channel->band == NL80211_BAND_6GHZ;
2a333a0d 4854 struct ieee80211_bss *bss = (void *)cbss->priv;
f2d9d270 4855 int ret;
52a45f38
AN		 4856 u32 i;
4857 bool have_80mhz;
a1cf775d 4858
24398e39
JB		 4859 sband = local->hw.wiphy->bands[cbss->channel->band];
4860
f2d9d270
JB		 4861 ifmgd->flags &= ~(IEEE80211_STA_DISABLE_40MHZ |
4862 IEEE80211_STA_DISABLE_80P80MHZ |
4863 IEEE80211_STA_DISABLE_160MHZ);
4864
75e296e9 4865 /* disable HT/VHT/HE if we don't support them */
57fa5e85 4866 if (!sband->ht_cap.ht_supported && !is_6ghz) {
75e296e9
JB		 4867 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
4868 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
4869 ifmgd->flags |= IEEE80211_STA_DISABLE_HE;
4870 }
4871
57fa5e85 4872 if (!sband->vht_cap.vht_supported && !is_6ghz) {
75e296e9 4873 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
57fa5e85
JB		 4874 ifmgd->flags |= IEEE80211_STA_DISABLE_HE;
4875 }
75e296e9
JB		 4876
4877 if (!ieee80211_get_he_sta_cap(sband))
4878 ifmgd->flags |= IEEE80211_STA_DISABLE_HE;
4879
9caf0364
JB		 4880 rcu_read_lock();
4881
57fa5e85 4882 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT) && !is_6ghz) {
53b954ee 4883 const u8 *ht_oper_ie, *ht_cap_ie;
24398e39 4884
9caf0364 4885 ht_oper_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_HT_OPERATION);
24398e39
JB		 4886 if (ht_oper_ie && ht_oper_ie[1] >= sizeof(*ht_oper))
4887 ht_oper = (void *)(ht_oper_ie + 2);
08e6effa 4888
53b954ee
EP		 4889 ht_cap_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_HT_CAPABILITY);
4890 if (ht_cap_ie && ht_cap_ie[1] >= sizeof(*ht_cap))
4891 ht_cap = (void *)(ht_cap_ie + 2);
4892
4893 if (!ht_cap) {
08e6effa
JB		 4894 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
4895 ht_oper = NULL;
4896 }
24398e39
JB		 4897 }
4898
57fa5e85 4899 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) && !is_6ghz) {
08e6effa 4900 const u8 *vht_oper_ie, *vht_cap;
f2d9d270 4901
9caf0364
JB		 4902 vht_oper_ie = ieee80211_bss_get_ie(cbss,
4903 WLAN_EID_VHT_OPERATION);
f2d9d270
JB		 4904 if (vht_oper_ie && vht_oper_ie[1] >= sizeof(*vht_oper))
4905 vht_oper = (void *)(vht_oper_ie + 2);
4906 if (vht_oper && !ht_oper) {
4907 vht_oper = NULL;
bdcbd8e0 4908 sdata_info(sdata,
75e296e9 4909 "AP advertised VHT without HT, disabling HT/VHT/HE\n");
cb145022
JB		 4910 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
4911 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
75e296e9 4912 ifmgd->flags |= IEEE80211_STA_DISABLE_HE;
24398e39 4913 }
08e6effa
JB		 4914
4915 vht_cap = ieee80211_bss_get_ie(cbss, WLAN_EID_VHT_CAPABILITY);
4916 if (!vht_cap || vht_cap[1] < sizeof(struct ieee80211_vht_cap)) {
4917 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
4918 vht_oper = NULL;
4919 }
24398e39
JB		 4920 }
4921
002245ec 4922 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HE)) {
41cbb0f5
LC		 4923 const struct cfg80211_bss_ies *ies;
4924 const u8 *he_oper_ie;
4925
4926 ies = rcu_dereference(cbss->ies);
4927 he_oper_ie = cfg80211_find_ext_ie(WLAN_EID_EXT_HE_OPERATION,
4928 ies->data, ies->len);
4929 if (he_oper_ie &&
4930 he_oper_ie[1] == ieee80211_he_oper_size(&he_oper_ie[3]))
4931 he_oper = (void *)(he_oper_ie + 3);
4932 else
4933 he_oper = NULL;
4934
f0c0407d 4935 if (!ieee80211_verify_sta_he_mcs_support(sband, he_oper))
41cbb0f5
LC		 4936 ifmgd->flags |= IEEE80211_STA_DISABLE_HE;
4937 }
4938
52a45f38
AN		 4939 /* Allow VHT if at least one channel on the sband supports 80 MHz */
4940 have_80mhz = false;
4941 for (i = 0; i < sband->n_channels; i++) {
4942 if (sband->channels[i].flags & (IEEE80211_CHAN_DISABLED |
4943 IEEE80211_CHAN_NO_80MHZ))
4944 continue;
4945
4946 have_80mhz = true;
4947 break;
4948 }
4949
4950 if (!have_80mhz)
4951 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
4952
f2d9d270
JB		 4953 ifmgd->flags |= ieee80211_determine_chantype(sdata, sband,
4954 cbss->channel,
2a333a0d 4955 bss->vht_cap_info,
41cbb0f5 4956 ht_oper, vht_oper, he_oper,
5cdaed1e 4957 &chandef, false);
04ecd257 4958
f2d9d270
JB		 4959 sdata->needed_rx_chains = min(ieee80211_ht_vht_rx_chains(sdata, cbss),
4960 local->rx_chains);
24398e39 4961
9caf0364
JB		 4962 rcu_read_unlock();
4963
57fa5e85
JB		 4964 if (ifmgd->flags & IEEE80211_STA_DISABLE_HE && is_6ghz) {
4965 sdata_info(sdata, "Rejecting non-HE 6/7 GHz connection");
4966 return -EINVAL;
4967 }
4968
04ecd257
JB		 4969 /* will change later if needed */
4970 sdata->smps_mode = IEEE80211_SMPS_OFF;
4971
34a3740d 4972 mutex_lock(&local->mtx);
f2d9d270
JB		 4973 /*
4974 * If this fails (possibly due to channel context sharing
4975 * on incompatible channels, e.g. 80+80 and 160 sharing the
4976 * same control channel) try to use a smaller bandwidth.
4977 */
4978 ret = ieee80211_vif_use_channel(sdata, &chandef,
4979 IEEE80211_CHANCTX_SHARED);
0418a445
SW		 4980
4981 /* don't downgrade for 5 and 10 MHz channels, though. */
4982 if (chandef.width == NL80211_CHAN_WIDTH_5 ||
4983 chandef.width == NL80211_CHAN_WIDTH_10)
34a3740d 4984 goto out;
0418a445 4985
d601cd8d 4986 while (ret && chandef.width != NL80211_CHAN_WIDTH_20_NOHT) {
e6b7cde4 4987 ifmgd->flags |= ieee80211_chandef_downgrade(&chandef);
d601cd8d
JB		 4988 ret = ieee80211_vif_use_channel(sdata, &chandef,
4989 IEEE80211_CHANCTX_SHARED);
4990 }
34a3740d
JB		 4991 out:
4992 mutex_unlock(&local->mtx);
f2d9d270 4993 return ret;
b17166a7
JB		 4994}
4995
78ac51f8
SS		 4996static bool ieee80211_get_dtim(const struct cfg80211_bss_ies *ies,
4997 u8 *dtim_count, u8 *dtim_period)
4998{
4999 const u8 *tim_ie = cfg80211_find_ie(WLAN_EID_TIM, ies->data, ies->len);
5000 const u8 *idx_ie = cfg80211_find_ie(WLAN_EID_MULTI_BSSID_IDX, ies->data,
5001 ies->len);
5002 const struct ieee80211_tim_ie *tim = NULL;
5003 const struct ieee80211_bssid_index *idx;
5004 bool valid = tim_ie && tim_ie[1] >= 2;
5005
5006 if (valid)
5007 tim = (void *)(tim_ie + 2);
5008
5009 if (dtim_count)
5010 *dtim_count = valid ? tim->dtim_count : 0;
5011
5012 if (dtim_period)
5013 *dtim_period = valid ? tim->dtim_period : 0;
5014
5015 /* Check if value is overridden by non-transmitted profile */
5016 if (!idx_ie || idx_ie[1] < 3)
5017 return valid;
5018
5019 idx = (void *)(idx_ie + 2);
5020
5021 if (dtim_count)
5022 *dtim_count = idx->dtim_count;
5023
5024 if (dtim_period)
5025 *dtim_period = idx->dtim_period;
5026
5027 return true;
5028}
5029
b17166a7 5030static int ieee80211_prep_connection(struct ieee80211_sub_if_data *sdata,
c1041f10
CRI		 5031 struct cfg80211_bss *cbss, bool assoc,
5032 bool override)
b17166a7
JB		 5033{
5034 struct ieee80211_local *local = sdata->local;
5035 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
5036 struct ieee80211_bss *bss = (void *)cbss->priv;
5037 struct sta_info *new_sta = NULL;
179b8fc7 5038 struct ieee80211_supported_band *sband;
c1041f10 5039 bool have_sta = false;
b17166a7
JB		 5040 int err;
5041
179b8fc7
CRI		 5042 sband = local->hw.wiphy->bands[cbss->channel->band];
5043
b17166a7
JB		 5044 if (WARN_ON(!ifmgd->auth_data && !ifmgd->assoc_data))
5045 return -EINVAL;
5046
f8860ce8
LC		 5047 /* If a reconfig is happening, bail out */
5048 if (local->in_reconfig)
5049 return -EBUSY;
5050
b17166a7
JB		 5051 if (assoc) {
5052 rcu_read_lock();
5053 have_sta = sta_info_get(sdata, cbss->bssid);
5054 rcu_read_unlock();
5055 }
5056
5057 if (!have_sta) {
5058 new_sta = sta_info_alloc(sdata, cbss->bssid, GFP_KERNEL);
5059 if (!new_sta)
5060 return -ENOMEM;
5061 }
179b8fc7 5062
c87905be
JB		 5063 /*
5064 * Set up the information for the new channel before setting the
5065 * new channel. We can't - completely race-free - change the basic
5066 * rates bitmap and the channel (sband) that it refers to, but if
5067 * we set it up before we at least avoid calling into the driver's
5068 * bss_info_changed() method with invalid information (since we do
5069 * call that from changing the channel - only for IDLE and perhaps
5070 * some others, but ...).
5071 *
5072 * So to avoid that, just set up all the new information before the
5073 * channel, but tell the driver to apply it only afterwards, since
5074 * it might need the new channel for that.
5075 */
13e0c8e3 5076 if (new_sta) {
5d6a1b06
JB		 5077 u32 rates = 0, basic_rates = 0;
5078 bool have_higher_than_11mbit;
5079 int min_rate = INT_MAX, min_rate_index = -1;
8cef2c9d 5080 const struct cfg80211_bss_ies *ies;
179b8fc7 5081 int shift = ieee80211_vif_get_shift(&sdata->vif);
5d6a1b06 5082
5d6a1b06
JB		 5083 ieee80211_get_rates(sband, bss->supp_rates,
5084 bss->supp_rates_len,
5085 &rates, &basic_rates,
5086 &have_higher_than_11mbit,
2103dec1 5087 &min_rate, &min_rate_index,
44f6d42c 5088 shift);
5d6a1b06
JB		 5089
5090 /*
5091 * This used to be a workaround for basic rates missing
5092 * in the association response frame. Now that we no
5093 * longer use the basic rates from there, it probably
5094 * doesn't happen any more, but keep the workaround so
5095 * in case some *other* APs are buggy in different ways
5096 * we can connect -- with a warning.
302ff8b7
IP		 5097 * Allow this workaround only in case the AP provided at least
5098 * one rate.
5d6a1b06 5099 */
302ff8b7
IP		 5100 if (min_rate_index < 0) {
5101 sdata_info(sdata,
5102 "No legacy rates in association response\n");
5103
5104 sta_info_free(local, new_sta);
5105 return -EINVAL;
5106 } else if (!basic_rates) {
bdcbd8e0
JB		 5107 sdata_info(sdata,
5108 "No basic rates, using min rate instead\n");
5d6a1b06
JB		 5109 basic_rates = BIT(min_rate_index);
5110 }
5111
bd718fc1
JB		 5112 if (rates)
5113 new_sta->sta.supp_rates[cbss->channel->band] = rates;
5114 else
5115 sdata_info(sdata,
5116 "No rates found, keeping mandatory only\n");
5117
5d6a1b06
JB		 5118 sdata->vif.bss_conf.basic_rates = basic_rates;
5119
5120 /* cf. IEEE 802.11 9.2.12 */
57fbcce3 5121 if (cbss->channel->band == NL80211_BAND_2GHZ &&
5d6a1b06
JB		 5122 have_higher_than_11mbit)
5123 sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE;
5124 else
5125 sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE;
5126
5127 memcpy(ifmgd->bssid, cbss->bssid, ETH_ALEN);
5128
8c358bcd
JB		 5129 /* set timing information */
5130 sdata->vif.bss_conf.beacon_int = cbss->beacon_interval;
8cef2c9d 5131 rcu_read_lock();
ef429dad
JB		 5132 ies = rcu_dereference(cbss->beacon_ies);
5133 if (ies) {
ef429dad
JB		 5134 sdata->vif.bss_conf.sync_tsf = ies->tsf;
5135 sdata->vif.bss_conf.sync_device_ts =
5136 bss->device_ts_beacon;
78ac51f8
SS		 5137
5138 ieee80211_get_dtim(ies,
5139 &sdata->vif.bss_conf.sync_dtim_count,
5140 NULL);
30686bf7
JB		 5141 } else if (!ieee80211_hw_check(&sdata->local->hw,
5142 TIMING_BEACON_ONLY)) {
ef429dad
JB		 5143 ies = rcu_dereference(cbss->proberesp_ies);
5144 /* must be non-NULL since beacon IEs were NULL */
5145 sdata->vif.bss_conf.sync_tsf = ies->tsf;
5146 sdata->vif.bss_conf.sync_device_ts =
5147 bss->device_ts_presp;
5148 sdata->vif.bss_conf.sync_dtim_count = 0;
5149 } else {
5150 sdata->vif.bss_conf.sync_tsf = 0;
5151 sdata->vif.bss_conf.sync_device_ts = 0;
5152 sdata->vif.bss_conf.sync_dtim_count = 0;
5153 }
8cef2c9d 5154 rcu_read_unlock();
c87905be 5155 }
8c358bcd 5156
c87905be
JB		 5157 if (new_sta || override) {
5158 err = ieee80211_prep_channel(sdata, cbss);
5159 if (err) {
5160 if (new_sta)
5161 sta_info_free(local, new_sta);
5162 return -EINVAL;
5163 }
5164 }
5165
5166 if (new_sta) {
5167 /*
5168 * tell driver about BSSID, basic rates and timing
5169 * this was set up above, before setting the channel
5170 */
5d6a1b06 5171 ieee80211_bss_info_change_notify(sdata,
8c358bcd
JB		 5172 BSS_CHANGED_BSSID | BSS_CHANGED_BASIC_RATES |
5173 BSS_CHANGED_BEACON_INT);
a1cf775d
JB		 5174
5175 if (assoc)
13e0c8e3 5176 sta_info_pre_move_state(new_sta, IEEE80211_STA_AUTH);
a1cf775d 5177
13e0c8e3
JB		 5178 err = sta_info_insert(new_sta);
5179 new_sta = NULL;
a1cf775d 5180 if (err) {
bdcbd8e0
JB		 5181 sdata_info(sdata,
5182 "failed to insert STA entry for the AP (error %d)\n",
5183 err);
a1cf775d
JB		 5184 return err;
5185 }
5186 } else
b203ca39 5187 WARN_ON_ONCE(!ether_addr_equal(ifmgd->bssid, cbss->bssid));
a1cf775d 5188
7d830a19
DS		 5189 /* Cancel scan to ensure that nothing interferes with connection */
5190 if (local->scanning)
5191 ieee80211_scan_cancel(local);
5192
a1cf775d
JB		 5193 return 0;
5194}
5195
77fdaa12
JB		 5196/* config hooks */
5197int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
5198 struct cfg80211_auth_request *req)
9c6bd790 5199{
66e67e41
JB		 5200 struct ieee80211_local *local = sdata->local;
5201 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
5202 struct ieee80211_mgd_auth_data *auth_data;
77fdaa12 5203 u16 auth_alg;
66e67e41 5204 int err;
efb543e6 5205 bool cont_auth;
66e67e41
JB		 5206
5207 /* prepare auth data structure */
9c6bd790 5208
77fdaa12
JB		 5209 switch (req->auth_type) {
5210 case NL80211_AUTHTYPE_OPEN_SYSTEM:
5211 auth_alg = WLAN_AUTH_OPEN;
5212 break;
5213 case NL80211_AUTHTYPE_SHARED_KEY:
5fdb3735 5214 if (fips_enabled)
9dca9c49 5215 return -EOPNOTSUPP;
77fdaa12
JB		 5216 auth_alg = WLAN_AUTH_SHARED_KEY;
5217 break;
5218 case NL80211_AUTHTYPE_FT:
5219 auth_alg = WLAN_AUTH_FT;
5220 break;
5221 case NL80211_AUTHTYPE_NETWORK_EAP:
5222 auth_alg = WLAN_AUTH_LEAP;
5223 break;
6b8ece3a
JM		 5224 case NL80211_AUTHTYPE_SAE:
5225 auth_alg = WLAN_AUTH_SAE;
5226 break;
dbc0c2cb
JM		 5227 case NL80211_AUTHTYPE_FILS_SK:
5228 auth_alg = WLAN_AUTH_FILS_SK;
5229 break;
5230 case NL80211_AUTHTYPE_FILS_SK_PFS:
5231 auth_alg = WLAN_AUTH_FILS_SK_PFS;
5232 break;
5233 case NL80211_AUTHTYPE_FILS_PK:
5234 auth_alg = WLAN_AUTH_FILS_PK;
5235 break;
77fdaa12
JB		 5236 default:
5237 return -EOPNOTSUPP;
60f8b39c 5238 }
77fdaa12 5239
efb543e6 5240 if (ifmgd->assoc_data)
8d7432a2
JM		 5241 return -EBUSY;
5242
11b6b5a4 5243 auth_data = kzalloc(sizeof(*auth_data) + req->auth_data_len +
6b8ece3a 5244 req->ie_len, GFP_KERNEL);
66e67e41 5245 if (!auth_data)
9c6bd790 5246 return -ENOMEM;
77fdaa12 5247
66e67e41 5248 auth_data->bss = req->bss;
77fdaa12 5249
11b6b5a4 5250 if (req->auth_data_len >= 4) {
6ec63612
JM		 5251 if (req->auth_type == NL80211_AUTHTYPE_SAE) {
5252 __le16 *pos = (__le16 *) req->auth_data;
5253
5254 auth_data->sae_trans = le16_to_cpu(pos[0]);
5255 auth_data->sae_status = le16_to_cpu(pos[1]);
5256 }
11b6b5a4
JM		 5257 memcpy(auth_data->data, req->auth_data + 4,
5258 req->auth_data_len - 4);
5259 auth_data->data_len += req->auth_data_len - 4;
6b8ece3a
JM		 5260 }
5261
efb543e6
JM		 5262 /* Check if continuing authentication or trying to authenticate with the
5263 * same BSS that we were in the process of authenticating with and avoid
5264 * removal and re-addition of the STA entry in
5265 * ieee80211_prep_connection().
5266 */
5267 cont_auth = ifmgd->auth_data && req->bss == ifmgd->auth_data->bss;
5268
77fdaa12 5269 if (req->ie && req->ie_len) {
6b8ece3a
JM		 5270 memcpy(&auth_data->data[auth_data->data_len],
5271 req->ie, req->ie_len);
5272 auth_data->data_len += req->ie_len;
9c6bd790 5273 }
77fdaa12 5274
fffd0934 5275 if (req->key && req->key_len) {
66e67e41
JB		 5276 auth_data->key_len = req->key_len;
5277 auth_data->key_idx = req->key_idx;
5278 memcpy(auth_data->key, req->key, req->key_len);
fffd0934
JB		 5279 }
5280
66e67e41 5281 auth_data->algorithm = auth_alg;
60f8b39c 5282
66e67e41 5283 /* try to authenticate/probe */
2a33bee2 5284
efb543e6
JM		 5285 if (ifmgd->auth_data) {
5286 if (cont_auth && req->auth_type == NL80211_AUTHTYPE_SAE) {
5287 auth_data->peer_confirmed =
5288 ifmgd->auth_data->peer_confirmed;
5289 }
5290 ieee80211_destroy_auth_data(sdata, cont_auth);
5291 }
2a33bee2 5292
66e67e41
JB		 5293 /* prep auth_data so we don't go into idle on disassoc */
5294 ifmgd->auth_data = auth_data;
af6b6374 5295
efb543e6
JM		 5296 /* If this is continuation of an ongoing SAE authentication exchange
5297 * (i.e., request to send SAE Confirm) and the peer has already
5298 * confirmed, mark authentication completed since we are about to send
5299 * out SAE Confirm.
5300 */
5301 if (cont_auth && req->auth_type == NL80211_AUTHTYPE_SAE &&
5302 auth_data->peer_confirmed && auth_data->sae_trans == 2)
5303 ieee80211_mark_sta_auth(sdata, req->bss->bssid);
5304
7b119dc0
JB		 5305 if (ifmgd->associated) {
5306 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
5307
89f774e6
JB		 5308 sdata_info(sdata,
5309 "disconnect from AP %pM for new auth to %pM\n",
5310 ifmgd->associated->bssid, req->bss->bssid);
7b119dc0
JB		 5311 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
5312 WLAN_REASON_UNSPECIFIED,
5313 false, frame_buf);
5314
a90faa9d
EG		 5315 ieee80211_report_disconnect(sdata, frame_buf,
5316 sizeof(frame_buf), true,
5317 WLAN_REASON_UNSPECIFIED);
7b119dc0 5318 }
af6b6374 5319
bdcbd8e0 5320 sdata_info(sdata, "authenticate with %pM\n", req->bss->bssid);
e5b900d2 5321
efb543e6 5322 err = ieee80211_prep_connection(sdata, req->bss, cont_auth, false);
a1cf775d 5323 if (err)
66e67e41 5324 goto err_clear;
af6b6374 5325
46cad4b7 5326 err = ieee80211_auth(sdata);
66e67e41 5327 if (err) {
66e67e41
JB		 5328 sta_info_destroy_addr(sdata, req->bss->bssid);
5329 goto err_clear;
5330 }
5331
5332 /* hold our own reference */
5b112d3d 5333 cfg80211_ref_bss(local->hw.wiphy, auth_data->bss);
8d61ffa5 5334 return 0;
66e67e41
JB		 5335
5336 err_clear:
c84a67a2 5337 eth_zero_addr(ifmgd->bssid);
3d2abdfd 5338 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID);
66e67e41 5339 ifmgd->auth_data = NULL;
d01f858c
MK		 5340 mutex_lock(&sdata->local->mtx);
5341 ieee80211_vif_release_channel(sdata);
5342 mutex_unlock(&sdata->local->mtx);
66e67e41 5343 kfree(auth_data);
66e67e41 5344 return err;
af6b6374
JB		 5345}
5346
77fdaa12
JB		 5347int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
5348 struct cfg80211_assoc_request *req)
f0706e82 5349{
57fa5e85 5350 bool is_6ghz = req->bss->channel->band == NL80211_BAND_6GHZ;
66e67e41 5351 struct ieee80211_local *local = sdata->local;
77fdaa12 5352 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
0c1ad2ca 5353 struct ieee80211_bss *bss = (void *)req->bss->priv;
66e67e41 5354 struct ieee80211_mgd_assoc_data *assoc_data;
c65dd147 5355 const struct cfg80211_bss_ies *beacon_ies;
4e74bfdb 5356 struct ieee80211_supported_band *sband;
b08fbbd8 5357 const u8 *ssidie, *ht_ie, *vht_ie;
2a33bee2 5358 int i, err;
c1041f10 5359 bool override = false;
f0706e82 5360
66e67e41
JB		 5361 assoc_data = kzalloc(sizeof(*assoc_data) + req->ie_len, GFP_KERNEL);
5362 if (!assoc_data)
5363 return -ENOMEM;
5364
9caf0364
JB		 5365 rcu_read_lock();
5366 ssidie = ieee80211_bss_get_ie(req->bss, WLAN_EID_SSID);
4152561f 5367 if (!ssidie || ssidie[1] > sizeof(assoc_data->ssid)) {
9caf0364
JB		 5368 rcu_read_unlock();
5369 kfree(assoc_data);
5370 return -EINVAL;
5371 }
5372 memcpy(assoc_data->ssid, ssidie + 2, ssidie[1]);
5373 assoc_data->ssid_len = ssidie[1];
5374 rcu_read_unlock();
5375
7b119dc0
JB		 5376 if (ifmgd->associated) {
5377 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
5378
89f774e6
JB		 5379 sdata_info(sdata,
5380 "disconnect from AP %pM for new assoc to %pM\n",
5381 ifmgd->associated->bssid, req->bss->bssid);
7b119dc0
JB		 5382 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
5383 WLAN_REASON_UNSPECIFIED,
5384 false, frame_buf);
5385
a90faa9d
EG		 5386 ieee80211_report_disconnect(sdata, frame_buf,
5387 sizeof(frame_buf), true,
5388 WLAN_REASON_UNSPECIFIED);
7b119dc0 5389 }
66e67e41
JB		 5390
5391 if (ifmgd->auth_data && !ifmgd->auth_data->done) {
5392 err = -EBUSY;
5393 goto err_free;
af6b6374 5394 }
77fdaa12 5395
66e67e41
JB		 5396 if (ifmgd->assoc_data) {
5397 err = -EBUSY;
5398 goto err_free;
5399 }
77fdaa12 5400
66e67e41
JB		 5401 if (ifmgd->auth_data) {
5402 bool match;
5403
5404 /* keep sta info, bssid if matching */
b203ca39 5405 match = ether_addr_equal(ifmgd->bssid, req->bss->bssid);
66e67e41 5406 ieee80211_destroy_auth_data(sdata, match);
2a33bee2
GE		 5407 }
5408
66e67e41 5409 /* prepare assoc data */
095d81ce 5410
d8ec4433
JO		 5411 ifmgd->beacon_crc_valid = false;
5412
095d81ce
JB		 5413 assoc_data->wmm = bss->wmm_used &&
5414 (local->hw.queues >= IEEE80211_NUM_ACS);
095d81ce 5415
de5036aa
JB		 5416 /*
5417 * IEEE802.11n does not allow TKIP/WEP as pairwise ciphers in HT mode.
5418 * We still associate in non-HT mode (11a/b/g) if any one of these
5419 * ciphers is configured as pairwise.
5420 * We can set this to true for non-11n hardware, that'll be checked
5421 * separately along with the peer capabilities.
5422 */
1c4cb928 5423 for (i = 0; i < req->crypto.n_ciphers_pairwise; i++) {
77fdaa12
JB		 5424 if (req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_WEP40 ||
5425 req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_TKIP ||
1c4cb928 5426 req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_WEP104) {
a8243b72 5427 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
d545daba 5428 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
41cbb0f5 5429 ifmgd->flags |= IEEE80211_STA_DISABLE_HE;
1c4cb928 5430 netdev_info(sdata->dev,
54626324 5431 "disabling HT/VHT/HE due to WEP/TKIP use\n");
1c4cb928
JB		 5432 }
5433 }
77fdaa12 5434
4e74bfdb 5435 sband = local->hw.wiphy->bands[req->bss->channel->band];
4e74bfdb 5436
75e296e9
JB		 5437 /* also disable HT/VHT/HE if the AP doesn't use WMM */
5438 if (!bss->wmm_used) {
5439 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
d545daba 5440 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
75e296e9
JB		 5441 ifmgd->flags |= IEEE80211_STA_DISABLE_HE;
5442 netdev_info(sdata->dev,
5443 "disabling HT/VHT/HE as WMM/QoS is not supported by the AP\n");
d545daba
MP		 5444 }
5445
ef96a842
BG		 5446 memcpy(&ifmgd->ht_capa, &req->ht_capa, sizeof(ifmgd->ht_capa));
5447 memcpy(&ifmgd->ht_capa_mask, &req->ht_capa_mask,
5448 sizeof(ifmgd->ht_capa_mask));
5449
dd5ecfea
JB		 5450 memcpy(&ifmgd->vht_capa, &req->vht_capa, sizeof(ifmgd->vht_capa));
5451 memcpy(&ifmgd->vht_capa_mask, &req->vht_capa_mask,
5452 sizeof(ifmgd->vht_capa_mask));
5453
77fdaa12 5454 if (req->ie && req->ie_len) {
66e67e41
JB		 5455 memcpy(assoc_data->ie, req->ie, req->ie_len);
5456 assoc_data->ie_len = req->ie_len;
5457 }
f679f65d 5458
39404fee
JM		 5459 if (req->fils_kek) {
5460 /* should already be checked in cfg80211 - so warn */
5461 if (WARN_ON(req->fils_kek_len > FILS_MAX_KEK_LEN)) {
5462 err = -EINVAL;
5463 goto err_free;
5464 }
5465 memcpy(assoc_data->fils_kek, req->fils_kek,
5466 req->fils_kek_len);
5467 assoc_data->fils_kek_len = req->fils_kek_len;
5468 }
5469
5470 if (req->fils_nonces)
5471 memcpy(assoc_data->fils_nonces, req->fils_nonces,
5472 2 * FILS_NONCE_LEN);
5473
66e67e41 5474 assoc_data->bss = req->bss;
f679f65d 5475
af6b6374
JB		 5476 if (ifmgd->req_smps == IEEE80211_SMPS_AUTOMATIC) {
5477 if (ifmgd->powersave)
04ecd257 5478 sdata->smps_mode = IEEE80211_SMPS_DYNAMIC;
af6b6374 5479 else
04ecd257 5480 sdata->smps_mode = IEEE80211_SMPS_OFF;
af6b6374 5481 } else
04ecd257 5482 sdata->smps_mode = ifmgd->req_smps;
af6b6374 5483
66e67e41 5484 assoc_data->capability = req->bss->capability;
66e67e41
JB		 5485 assoc_data->supp_rates = bss->supp_rates;
5486 assoc_data->supp_rates_len = bss->supp_rates_len;
9dde6423 5487
9caf0364 5488 rcu_read_lock();
9dde6423
JB		 5489 ht_ie = ieee80211_bss_get_ie(req->bss, WLAN_EID_HT_OPERATION);
5490 if (ht_ie && ht_ie[1] >= sizeof(struct ieee80211_ht_operation))
5491 assoc_data->ap_ht_param =
5492 ((struct ieee80211_ht_operation *)(ht_ie + 2))->ht_param;
57fa5e85 5493 else if (!is_6ghz)
a8243b72 5494 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
b08fbbd8
JB		 5495 vht_ie = ieee80211_bss_get_ie(req->bss, WLAN_EID_VHT_CAPABILITY);
5496 if (vht_ie && vht_ie[1] >= sizeof(struct ieee80211_vht_cap))
5497 memcpy(&assoc_data->ap_vht_cap, vht_ie + 2,
5498 sizeof(struct ieee80211_vht_cap));
57fa5e85
JB		 5499 else if (!is_6ghz)
5500 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT |
5501 IEEE80211_STA_DISABLE_HE;
9caf0364 5502 rcu_read_unlock();
63f170e0 5503
848955cc 5504 if (WARN((sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_UAPSD) &&
30686bf7 5505 ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK),
848955cc
JB		 5506 "U-APSD not supported with HW_PS_NULLFUNC_STACK\n"))
5507 sdata->vif.driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
5508
ab13315a 5509 if (bss->wmm_used && bss->uapsd_supported &&
848955cc 5510 (sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_UAPSD)) {
76f0303d 5511 assoc_data->uapsd = true;
ab13315a
KV		 5512 ifmgd->flags |= IEEE80211_STA_UAPSD_ENABLED;
5513 } else {
76f0303d 5514 assoc_data->uapsd = false;
ab13315a
KV		 5515 ifmgd->flags &= ~IEEE80211_STA_UAPSD_ENABLED;
5516 }
5517
77fdaa12 5518 if (req->prev_bssid)
66e67e41 5519 memcpy(assoc_data->prev_bssid, req->prev_bssid, ETH_ALEN);
77fdaa12
JB		 5520
5521 if (req->use_mfp) {
5522 ifmgd->mfp = IEEE80211_MFP_REQUIRED;
5523 ifmgd->flags |= IEEE80211_STA_MFP_ENABLED;
5524 } else {
5525 ifmgd->mfp = IEEE80211_MFP_DISABLED;
5526 ifmgd->flags &= ~IEEE80211_STA_MFP_ENABLED;
5527 }
5528
cd2f5dd7
AK		 5529 if (req->flags & ASSOC_REQ_USE_RRM)
5530 ifmgd->flags |= IEEE80211_STA_ENABLE_RRM;
5531 else
5532 ifmgd->flags &= ~IEEE80211_STA_ENABLE_RRM;
5533
77fdaa12
JB		 5534 if (req->crypto.control_port)
5535 ifmgd->flags |= IEEE80211_STA_CONTROL_PORT;
5536 else
5537 ifmgd->flags &= ~IEEE80211_STA_CONTROL_PORT;
5538
a621fa4d
JB		 5539 sdata->control_port_protocol = req->crypto.control_port_ethertype;
5540 sdata->control_port_no_encrypt = req->crypto.control_port_no_encrypt;
018f6fbf
DK		 5541 sdata->control_port_over_nl80211 =
5542 req->crypto.control_port_over_nl80211;
7f3f96ce 5543 sdata->control_port_no_preauth = req->crypto.control_port_no_preauth;
2475b1cc
MS		 5544 sdata->encrypt_headroom = ieee80211_cs_headroom(local, &req->crypto,
5545 sdata->vif.type);
a621fa4d 5546
66e67e41
JB		 5547 /* kick off associate process */
5548
5549 ifmgd->assoc_data = assoc_data;
826262c3 5550 ifmgd->dtim_period = 0;
989c6505 5551 ifmgd->have_beacon = false;
66e67e41 5552
c1041f10
CRI		 5553 /* override HT/VHT configuration only if the AP and we support it */
5554 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) {
5555 struct ieee80211_sta_ht_cap sta_ht_cap;
5556
5557 if (req->flags & ASSOC_REQ_DISABLE_HT)
5558 override = true;
5559
5560 memcpy(&sta_ht_cap, &sband->ht_cap, sizeof(sta_ht_cap));
5561 ieee80211_apply_htcap_overrides(sdata, &sta_ht_cap);
5562
5563 /* check for 40 MHz disable override */
5564 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_40MHZ) &&
5565 sband->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 &&
5566 !(sta_ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40))
5567 override = true;
5568
5569 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) &&
5570 req->flags & ASSOC_REQ_DISABLE_VHT)
5571 override = true;
5572 }
5573
5574 if (req->flags & ASSOC_REQ_DISABLE_HT) {
5575 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
5576 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
75e296e9 5577 ifmgd->flags |= IEEE80211_STA_DISABLE_HE;
c1041f10
CRI		 5578 }
5579
5580 if (req->flags & ASSOC_REQ_DISABLE_VHT)
5581 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
5582
5583 err = ieee80211_prep_connection(sdata, req->bss, true, override);
a1cf775d
JB		 5584 if (err)
5585 goto err_clear;
66e67e41 5586
c65dd147
EG		 5587 rcu_read_lock();
5588 beacon_ies = rcu_dereference(req->bss->beacon_ies);
826262c3 5589
30686bf7 5590 if (ieee80211_hw_check(&sdata->local->hw, NEED_DTIM_BEFORE_ASSOC) &&
c65dd147
EG		 5591 !beacon_ies) {
5592 /*
5593 * Wait up to one beacon interval ...
5594 * should this be more if we miss one?
5595 */
5596 sdata_info(sdata, "waiting for beacon from %pM\n",
5597 ifmgd->bssid);
5598 assoc_data->timeout = TU_TO_EXP_TIME(req->bss->beacon_interval);
89afe614 5599 assoc_data->timeout_started = true;
c65dd147
EG		 5600 assoc_data->need_beacon = true;
5601 } else if (beacon_ies) {
3b3ec3d5 5602 const struct element *elem;
ef429dad
JB		 5603 u8 dtim_count = 0;
5604
78ac51f8
SS		 5605 ieee80211_get_dtim(beacon_ies, &dtim_count,
5606 &ifmgd->dtim_period);
5607
989c6505 5608 ifmgd->have_beacon = true;
66e67e41 5609 assoc_data->timeout = jiffies;
89afe614 5610 assoc_data->timeout_started = true;
ef429dad 5611
30686bf7 5612 if (ieee80211_hw_check(&local->hw, TIMING_BEACON_ONLY)) {
ef429dad
JB		 5613 sdata->vif.bss_conf.sync_tsf = beacon_ies->tsf;
5614 sdata->vif.bss_conf.sync_device_ts =
5615 bss->device_ts_beacon;
5616 sdata->vif.bss_conf.sync_dtim_count = dtim_count;
5617 }
78ac51f8 5618
3b3ec3d5
ST		 5619 elem = cfg80211_find_ext_elem(WLAN_EID_EXT_MULTIPLE_BSSID_CONFIGURATION,
5620 beacon_ies->data, beacon_ies->len);
5621 if (elem && elem->datalen >= 3)
5622 sdata->vif.bss_conf.profile_periodicity = elem->data[2];
78ac51f8 5623
3b3ec3d5
ST		 5624 elem = cfg80211_find_elem(WLAN_EID_EXT_CAPABILITY,
5625 beacon_ies->data, beacon_ies->len);
5626 if (elem && elem->datalen >= 11 &&
5627 (elem->data[10] & WLAN_EXT_CAPA11_EMA_SUPPORT))
78ac51f8 5628 sdata->vif.bss_conf.ema_ap = true;
c65dd147
EG		 5629 } else {
5630 assoc_data->timeout = jiffies;
89afe614 5631 assoc_data->timeout_started = true;
66e67e41 5632 }
c65dd147
EG		 5633 rcu_read_unlock();
5634
8d61ffa5 5635 run_again(sdata, assoc_data->timeout);
66e67e41 5636
fcff4f10
PS		 5637 if (bss->corrupt_data) {
5638 char *corrupt_type = "data";
5639 if (bss->corrupt_data & IEEE80211_BSS_CORRUPT_BEACON) {
5640 if (bss->corrupt_data &
5641 IEEE80211_BSS_CORRUPT_PROBE_RESP)
5642 corrupt_type = "beacon and probe response";
5643 else
5644 corrupt_type = "beacon";
5645 } else if (bss->corrupt_data & IEEE80211_BSS_CORRUPT_PROBE_RESP)
5646 corrupt_type = "probe response";
bdcbd8e0
JB		 5647 sdata_info(sdata, "associating with AP with corrupt %s\n",
5648 corrupt_type);
fcff4f10
PS		 5649 }
5650
8d61ffa5 5651 return 0;
66e67e41 5652 err_clear:
c84a67a2 5653 eth_zero_addr(ifmgd->bssid);
3d2abdfd 5654 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID);
66e67e41
JB		 5655 ifmgd->assoc_data = NULL;
5656 err_free:
5657 kfree(assoc_data);
66e67e41 5658 return err;
f0706e82
JB		 5659}
5660
77fdaa12 5661int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
63c9c5e7 5662 struct cfg80211_deauth_request *req)
f0706e82 5663{
46900298 5664 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
6ae16775 5665 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
6863255b 5666 bool tx = !req->local_state_change;
f0706e82 5667
c9c3a060
JB		 5668 if (ifmgd->auth_data &&
5669 ether_addr_equal(ifmgd->auth_data->bss->bssid, req->bssid)) {
5670 sdata_info(sdata,
5671 "aborting authentication with %pM by local choice (Reason: %u=%s)\n",
5672 req->bssid, req->reason_code,
5673 ieee80211_get_reason_code_string(req->reason_code));
0ff71613 5674
d4e36e55 5675 drv_mgd_prepare_tx(sdata->local, sdata, 0);
4b08d1b6 5676 ieee80211_send_deauth_disassoc(sdata, req->bssid, req->bssid,
37ad3888 5677 IEEE80211_STYPE_DEAUTH,
6863255b 5678 req->reason_code, tx,
37ad3888 5679 frame_buf);
86552017 5680 ieee80211_destroy_auth_data(sdata, false);
a90faa9d
EG		 5681 ieee80211_report_disconnect(sdata, frame_buf,
5682 sizeof(frame_buf), true,
5683 req->reason_code);
86552017 5684
c9c3a060 5685 return 0;
8c7d857c
EG		 5686 }
5687
a64cba3c
AO		 5688 if (ifmgd->assoc_data &&
5689 ether_addr_equal(ifmgd->assoc_data->bss->bssid, req->bssid)) {
5690 sdata_info(sdata,
5691 "aborting association with %pM by local choice (Reason: %u=%s)\n",
5692 req->bssid, req->reason_code,
5693 ieee80211_get_reason_code_string(req->reason_code));
5694
d4e36e55 5695 drv_mgd_prepare_tx(sdata->local, sdata, 0);
4b08d1b6 5696 ieee80211_send_deauth_disassoc(sdata, req->bssid, req->bssid,
a64cba3c
AO		 5697 IEEE80211_STYPE_DEAUTH,
5698 req->reason_code, tx,
5699 frame_buf);
e6f462df 5700 ieee80211_destroy_assoc_data(sdata, false, true);
a64cba3c
AO		 5701 ieee80211_report_disconnect(sdata, frame_buf,
5702 sizeof(frame_buf), true,
5703 req->reason_code);
5704 return 0;
5705 }
5706
86552017
JB		 5707 if (ifmgd->associated &&
5708 ether_addr_equal(ifmgd->associated->bssid, req->bssid)) {
c9c3a060
JB		 5709 sdata_info(sdata,
5710 "deauthenticating from %pM by local choice (Reason: %u=%s)\n",
5711 req->bssid, req->reason_code,
5712 ieee80211_get_reason_code_string(req->reason_code));
5713
86552017
JB		 5714 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
5715 req->reason_code, tx, frame_buf);
a90faa9d
EG		 5716 ieee80211_report_disconnect(sdata, frame_buf,
5717 sizeof(frame_buf), true,
5718 req->reason_code);
c9c3a060
JB		 5719 return 0;
5720 }
86552017 5721
c9c3a060 5722 return -ENOTCONN;
f0706e82 5723}
84363e6e 5724
77fdaa12 5725int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
63c9c5e7 5726 struct cfg80211_disassoc_request *req)
9c6bd790 5727{
77fdaa12 5728 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
e69e95db 5729 u8 bssid[ETH_ALEN];
6ae16775 5730 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
9c6bd790 5731
8d8b261a
JB		 5732 /*
5733 * cfg80211 should catch this ... but it's racy since
5734 * we can receive a disassoc frame, process it, hand it
5735 * to cfg80211 while that's in a locked section already
5736 * trying to tell us that the user wants to disconnect.
5737 */
8d61ffa5 5738 if (ifmgd->associated != req->bss)
77fdaa12 5739 return -ENOLINK;
77fdaa12 5740
bdcbd8e0 5741 sdata_info(sdata,
dfa1ad29
CO		 5742 "disassociating from %pM by local choice (Reason: %u=%s)\n",
5743 req->bss->bssid, req->reason_code, ieee80211_get_reason_code_string(req->reason_code));
0ff71613 5744
e69e95db 5745 memcpy(bssid, req->bss->bssid, ETH_ALEN);
37ad3888
JB		 5746 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DISASSOC,
5747 req->reason_code, !req->local_state_change,
5748 frame_buf);
10f644a4 5749
a90faa9d
EG		 5750 ieee80211_report_disconnect(sdata, frame_buf, sizeof(frame_buf), true,
5751 req->reason_code);
bc83b681 5752
10f644a4
JB		 5753 return 0;
5754}
026331c4 5755
afa762f6 5756void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata)
54e4ffb2
JB		 5757{
5758 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
5759
49921859
BG		 5760 /*
5761 * Make sure some work items will not run after this,
5762 * they will not do anything but might not have been
5763 * cancelled when disconnecting.
5764 */
5765 cancel_work_sync(&ifmgd->monitor_work);
5766 cancel_work_sync(&ifmgd->beacon_connection_loss_work);
5767 cancel_work_sync(&ifmgd->request_smps_work);
5768 cancel_work_sync(&ifmgd->csa_connection_drop_work);
5769 cancel_work_sync(&ifmgd->chswitch_work);
81dd2b88 5770 cancel_delayed_work_sync(&ifmgd->tdls_peer_del_work);
49921859 5771
8d61ffa5 5772 sdata_lock(sdata);
959867fa
JB		 5773 if (ifmgd->assoc_data) {
5774 struct cfg80211_bss *bss = ifmgd->assoc_data->bss;
e6f462df 5775 ieee80211_destroy_assoc_data(sdata, false, false);
959867fa
JB		 5776 cfg80211_assoc_timeout(sdata->dev, bss);
5777 }
54e4ffb2
JB		 5778 if (ifmgd->auth_data)
5779 ieee80211_destroy_auth_data(sdata, false);
1277b4a9
LK		 5780 spin_lock_bh(&ifmgd->teardown_lock);
5781 if (ifmgd->teardown_skb) {
5782 kfree_skb(ifmgd->teardown_skb);
5783 ifmgd->teardown_skb = NULL;
5784 ifmgd->orig_teardown_skb = NULL;
5785 }
4d9ec73d
JM		 5786 kfree(ifmgd->assoc_req_ies);
5787 ifmgd->assoc_req_ies = NULL;
5788 ifmgd->assoc_req_ies_len = 0;
1277b4a9 5789 spin_unlock_bh(&ifmgd->teardown_lock);
54e4ffb2 5790 del_timer_sync(&ifmgd->timer);
8d61ffa5 5791 sdata_unlock(sdata);
54e4ffb2
JB		 5792}
5793
a97c13c3
JO		 5794void ieee80211_cqm_rssi_notify(struct ieee80211_vif *vif,
5795 enum nl80211_cqm_rssi_threshold_event rssi_event,
769f07d8 5796 s32 rssi_level,
a97c13c3
JO		 5797 gfp_t gfp)
5798{
5799 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
5800
769f07d8 5801 trace_api_cqm_rssi_notify(sdata, rssi_event, rssi_level);
b5878a2d 5802
bee427b8 5803 cfg80211_cqm_rssi_notify(sdata->dev, rssi_event, rssi_level, gfp);
a97c13c3
JO		 5804}
5805EXPORT_SYMBOL(ieee80211_cqm_rssi_notify);
98f03342
JB		 5806
5807void ieee80211_cqm_beacon_loss_notify(struct ieee80211_vif *vif, gfp_t gfp)
5808{
5809 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
5810
5811 trace_api_cqm_beacon_loss_notify(sdata->local, sdata);
5812
5813 cfg80211_cqm_beacon_loss_notify(sdata->dev, gfp);
5814}
5815EXPORT_SYMBOL(ieee80211_cqm_beacon_loss_notify);
Linux 6.x block layer and io_uring tree(s)