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mac80211: swap NEED_TXPROCESSING and HW_80211_ENCAP tx flags
[mirror_ubuntu-jammy-kernel.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;
523f3ec0
JB		 170 else
171 ret = 0;
57fa5e85
JB		 172 vht_chandef = *chandef;
173 goto out;
174 }
175
176 memcpy(&sta_ht_cap, &sband->ht_cap, sizeof(sta_ht_cap));
177 ieee80211_apply_htcap_overrides(sdata, &sta_ht_cap);
178
b1b1ae2c 179 if (!ht_oper || !sta_ht_cap.ht_supported) {
75e296e9
JB		 180 ret = IEEE80211_STA_DISABLE_HT |
181 IEEE80211_STA_DISABLE_VHT |
182 IEEE80211_STA_DISABLE_HE;
6565ec9b
JB		 183 goto out;
184 }
185
186 chandef->width = NL80211_CHAN_WIDTH_20;
187
188 ht_cfreq = ieee80211_channel_to_frequency(ht_oper->primary_chan,
189 channel->band);
190 /* check that channel matches the right operating channel */
5cdaed1e 191 if (!tracking && channel->center_freq != ht_cfreq) {
6565ec9b
JB		 192 /*
193 * It's possible that some APs are confused here;
194 * Netgear WNDR3700 sometimes reports 4 higher than
195 * the actual channel in association responses, but
196 * since we look at probe response/beacon data here
197 * it should be OK.
198 */
5cdaed1e
JB		 199 sdata_info(sdata,
200 "Wrong control channel: center-freq: %d ht-cfreq: %d ht->primary_chan: %d band: %d - Disabling HT\n",
201 channel->center_freq, ht_cfreq,
202 ht_oper->primary_chan, channel->band);
75e296e9
JB		 203 ret = IEEE80211_STA_DISABLE_HT |
204 IEEE80211_STA_DISABLE_VHT |
205 IEEE80211_STA_DISABLE_HE;
6565ec9b
JB		 206 goto out;
207 }
208
209 /* check 40 MHz support, if we have it */
179b8fc7 210 if (sta_ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40) {
8ac3c704 211 ieee80211_chandef_ht_oper(ht_oper, chandef);
6565ec9b
JB		 212 } else {
213 /* 40 MHz (and 80 MHz) must be supported for VHT */
214 ret = IEEE80211_STA_DISABLE_VHT;
85220d71
JB		 215 /* also mark 40 MHz disabled */
216 ret |= IEEE80211_STA_DISABLE_40MHZ;
6565ec9b
JB		 217 goto out;
218 }
219
220 if (!vht_oper || !sband->vht_cap.vht_supported) {
221 ret = IEEE80211_STA_DISABLE_VHT;
222 goto out;
223 }
224
8ac3c704 225 vht_chandef = *chandef;
41cbb0f5
LC		 226 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HE) && he_oper &&
227 (le32_to_cpu(he_oper->he_oper_params) &
228 IEEE80211_HE_OPERATION_VHT_OPER_INFO)) {
229 struct ieee80211_vht_operation he_oper_vht_cap;
230
231 /*
232 * Set only first 3 bytes (other 2 aren't used in
233 * ieee80211_chandef_vht_oper() anyway)
234 */
235 memcpy(&he_oper_vht_cap, he_oper->optional, 3);
236 he_oper_vht_cap.basic_mcs_set = cpu_to_le16(0);
237
2a333a0d 238 if (!ieee80211_chandef_vht_oper(&sdata->local->hw, vht_cap_info,
7eb26df2 239 &he_oper_vht_cap, ht_oper,
41cbb0f5
LC		 240 &vht_chandef)) {
241 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HE))
242 sdata_info(sdata,
243 "HE AP VHT information is invalid, disable HE\n");
244 ret = IEEE80211_STA_DISABLE_HE;
245 goto out;
246 }
2a333a0d
JB		 247 } else if (!ieee80211_chandef_vht_oper(&sdata->local->hw,
248 vht_cap_info,
249 vht_oper, ht_oper,
250 &vht_chandef)) {
5cdaed1e 251 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
30eb1dc2 252 sdata_info(sdata,
8ac3c704 253 "AP VHT information is invalid, disable VHT\n");
6565ec9b
JB		 254 ret = IEEE80211_STA_DISABLE_VHT;
255 goto out;
256 }
257
258 if (!cfg80211_chandef_valid(&vht_chandef)) {
5cdaed1e 259 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
30eb1dc2
JB		 260 sdata_info(sdata,
261 "AP VHT information is invalid, disable VHT\n");
6565ec9b
JB		 262 ret = IEEE80211_STA_DISABLE_VHT;
263 goto out;
264 }
265
266 if (cfg80211_chandef_identical(chandef, &vht_chandef)) {
267 ret = 0;
268 goto out;
269 }
270
271 if (!cfg80211_chandef_compatible(chandef, &vht_chandef)) {
5cdaed1e 272 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
30eb1dc2
JB		 273 sdata_info(sdata,
274 "AP VHT information doesn't match HT, disable VHT\n");
6565ec9b
JB		 275 ret = IEEE80211_STA_DISABLE_VHT;
276 goto out;
277 }
278
279 *chandef = vht_chandef;
280
281 ret = 0;
282
283out:
963a1852
JB		 284 /*
285 * When tracking the current AP, don't do any further checks if the
286 * new chandef is identical to the one we're currently using for the
287 * connection. This keeps us from playing ping-pong with regulatory,
288 * without it the following can happen (for example):
289 * - connect to an AP with 80 MHz, world regdom allows 80 MHz
290 * - AP advertises regdom US
291 * - CRDA loads regdom US with 80 MHz prohibited (old database)
292 * - the code below detects an unsupported channel, downgrades, and
293 * we disconnect from the AP in the caller
294 * - disconnect causes CRDA to reload world regdomain and the game
295 * starts anew.
296 * (see https://bugzilla.kernel.org/show_bug.cgi?id=70881)
297 *
298 * It seems possible that there are still scenarios with CSA or real
299 * bandwidth changes where a this could happen, but those cases are
300 * less common and wouldn't completely prevent using the AP.
301 */
302 if (tracking &&
303 cfg80211_chandef_identical(chandef, &sdata->vif.bss_conf.chandef))
304 return ret;
305
586e01ed
JB		 306 /* don't print the message below for VHT mismatch if VHT is disabled */
307 if (ret & IEEE80211_STA_DISABLE_VHT)
308 vht_chandef = *chandef;
309
ddfe49b4
JB		 310 /*
311 * Ignore the DISABLED flag when we're already connected and only
312 * tracking the APs beacon for bandwidth changes - otherwise we
313 * might get disconnected here if we connect to an AP, update our
314 * regulatory information based on the AP's country IE and the
315 * information we have is wrong/outdated and disables the channel
316 * that we're actually using for the connection to the AP.
317 */
6565ec9b 318 while (!cfg80211_chandef_usable(sdata->local->hw.wiphy, chandef,
ddfe49b4
JB		 319 tracking ? 0 :
320 IEEE80211_CHAN_DISABLED)) {
6565ec9b
JB		 321 if (WARN_ON(chandef->width == NL80211_CHAN_WIDTH_20_NOHT)) {
322 ret = IEEE80211_STA_DISABLE_HT |
75e296e9
JB		 323 IEEE80211_STA_DISABLE_VHT |
324 IEEE80211_STA_DISABLE_HE;
b56e4b85 325 break;
6565ec9b
JB		 326 }
327
e6b7cde4 328 ret |= ieee80211_chandef_downgrade(chandef);
6565ec9b
JB		 329 }
330
8cadb207
DG		 331 if (!he_oper || !cfg80211_chandef_usable(sdata->wdev.wiphy, chandef,
332 IEEE80211_CHAN_NO_HE))
b5db1aca
HD		 333 ret |= IEEE80211_STA_DISABLE_HE;
334
5cdaed1e 335 if (chandef->width != vht_chandef.width && !tracking)
6565ec9b
JB		 336 sdata_info(sdata,
337 "capabilities/regulatory prevented using AP HT/VHT configuration, downgraded\n");
338
339 WARN_ON_ONCE(!cfg80211_chandef_valid(chandef));
340 return ret;
341}
342
30eb1dc2
JB		 343static int ieee80211_config_bw(struct ieee80211_sub_if_data *sdata,
344 struct sta_info *sta,
53b954ee 345 const struct ieee80211_ht_cap *ht_cap,
2a333a0d 346 const struct ieee80211_vht_cap *vht_cap,
30eb1dc2
JB		 347 const struct ieee80211_ht_operation *ht_oper,
348 const struct ieee80211_vht_operation *vht_oper,
41cbb0f5 349 const struct ieee80211_he_operation *he_oper,
30eb1dc2 350 const u8 *bssid, u32 *changed)
d5522e03
JB		 351{
352 struct ieee80211_local *local = sdata->local;
30eb1dc2 353 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
41cbb0f5
LC		 354 struct ieee80211_channel *chan = sdata->vif.bss_conf.chandef.chan;
355 struct ieee80211_supported_band *sband =
356 local->hw.wiphy->bands[chan->band];
30eb1dc2 357 struct cfg80211_chan_def chandef;
9ed6bcce 358 u16 ht_opmode;
30eb1dc2
JB		 359 u32 flags;
360 enum ieee80211_sta_rx_bandwidth new_sta_bw;
2a333a0d 361 u32 vht_cap_info = 0;
30eb1dc2 362 int ret;
d5522e03 363
30eb1dc2
JB		 364 /* if HT was/is disabled, don't track any bandwidth changes */
365 if (ifmgd->flags & IEEE80211_STA_DISABLE_HT || !ht_oper)
1128958d
JB		 366 return 0;
367
30eb1dc2
JB		 368 /* don't check VHT if we associated as non-VHT station */
369 if (ifmgd->flags & IEEE80211_STA_DISABLE_VHT)
370 vht_oper = NULL;
371
41cbb0f5
LC		 372 /* don't check HE if we associated as non-HE station */
373 if (ifmgd->flags & IEEE80211_STA_DISABLE_HE ||
374 !ieee80211_get_he_sta_cap(sband))
375 he_oper = NULL;
376
30eb1dc2
JB		 377 if (WARN_ON_ONCE(!sta))
378 return -EINVAL;
379
017b45bb
AA		 380 /*
381 * if bss configuration changed store the new one -
382 * this may be applicable even if channel is identical
383 */
384 ht_opmode = le16_to_cpu(ht_oper->operation_mode);
385 if (sdata->vif.bss_conf.ht_operation_mode != ht_opmode) {
386 *changed |= BSS_CHANGED_HT;
387 sdata->vif.bss_conf.ht_operation_mode = ht_opmode;
388 }
389
2a333a0d
JB		 390 if (vht_cap)
391 vht_cap_info = le32_to_cpu(vht_cap->vht_cap_info);
392
41cbb0f5 393 /* calculate new channel (type) based on HT/VHT/HE operation IEs */
2a333a0d 394 flags = ieee80211_determine_chantype(sdata, sband, chan, vht_cap_info,
41cbb0f5 395 ht_oper, vht_oper, he_oper,
53b954ee 396 &chandef, true);
30eb1dc2
JB		 397
398 /*
399 * Downgrade the new channel if we associated with restricted
400 * capabilities. For example, if we associated as a 20 MHz STA
401 * to a 40 MHz AP (due to regulatory, capabilities or config
402 * reasons) then switching to a 40 MHz channel now won't do us
403 * any good -- we couldn't use it with the AP.
404 */
405 if (ifmgd->flags & IEEE80211_STA_DISABLE_80P80MHZ &&
406 chandef.width == NL80211_CHAN_WIDTH_80P80)
e6b7cde4 407 flags |= ieee80211_chandef_downgrade(&chandef);
30eb1dc2
JB		 408 if (ifmgd->flags & IEEE80211_STA_DISABLE_160MHZ &&
409 chandef.width == NL80211_CHAN_WIDTH_160)
e6b7cde4 410 flags |= ieee80211_chandef_downgrade(&chandef);
30eb1dc2
JB		 411 if (ifmgd->flags & IEEE80211_STA_DISABLE_40MHZ &&
412 chandef.width > NL80211_CHAN_WIDTH_20)
e6b7cde4 413 flags |= ieee80211_chandef_downgrade(&chandef);
30eb1dc2
JB		 414
415 if (cfg80211_chandef_identical(&chandef, &sdata->vif.bss_conf.chandef))
416 return 0;
417
418 sdata_info(sdata,
b6011960
TP		 419 "AP %pM changed bandwidth, new config is %d.%03d MHz, "
420 "width %d (%d.%03d/%d MHz)\n",
421 ifmgd->bssid, chandef.chan->center_freq,
422 chandef.chan->freq_offset, chandef.width,
423 chandef.center_freq1, chandef.freq1_offset,
424 chandef.center_freq2);
30eb1dc2
JB		 425
426 if (flags != (ifmgd->flags & (IEEE80211_STA_DISABLE_HT |
427 IEEE80211_STA_DISABLE_VHT |
75e296e9 428 IEEE80211_STA_DISABLE_HE |
30eb1dc2
JB		 429 IEEE80211_STA_DISABLE_40MHZ |
430 IEEE80211_STA_DISABLE_80P80MHZ |
431 IEEE80211_STA_DISABLE_160MHZ)) ||
432 !cfg80211_chandef_valid(&chandef)) {
433 sdata_info(sdata,
434 "AP %pM changed bandwidth in a way we can't support - disconnect\n",
435 ifmgd->bssid);
436 return -EINVAL;
437 }
438
439 switch (chandef.width) {
440 case NL80211_CHAN_WIDTH_20_NOHT:
441 case NL80211_CHAN_WIDTH_20:
442 new_sta_bw = IEEE80211_STA_RX_BW_20;
443 break;
4bf88530 444 case NL80211_CHAN_WIDTH_40:
30eb1dc2 445 new_sta_bw = IEEE80211_STA_RX_BW_40;
64f68e5d 446 break;
30eb1dc2
JB		 447 case NL80211_CHAN_WIDTH_80:
448 new_sta_bw = IEEE80211_STA_RX_BW_80;
449 break;
450 case NL80211_CHAN_WIDTH_80P80:
451 case NL80211_CHAN_WIDTH_160:
452 new_sta_bw = IEEE80211_STA_RX_BW_160;
64f68e5d 453 break;
30eb1dc2
JB		 454 default:
455 return -EINVAL;
64f68e5d 456 }
d5522e03 457
30eb1dc2
JB		 458 if (new_sta_bw > sta->cur_max_bandwidth)
459 new_sta_bw = sta->cur_max_bandwidth;
64f68e5d 460
30eb1dc2
JB		 461 if (new_sta_bw < sta->sta.bandwidth) {
462 sta->sta.bandwidth = new_sta_bw;
463 rate_control_rate_update(local, sband, sta,
464 IEEE80211_RC_BW_CHANGED);
465 }
64f68e5d 466
30eb1dc2
JB		 467 ret = ieee80211_vif_change_bandwidth(sdata, &chandef, changed);
468 if (ret) {
469 sdata_info(sdata,
470 "AP %pM changed bandwidth to incompatible one - disconnect\n",
471 ifmgd->bssid);
472 return ret;
473 }
7cc44ed4 474
30eb1dc2
JB		 475 if (new_sta_bw > sta->sta.bandwidth) {
476 sta->sta.bandwidth = new_sta_bw;
477 rate_control_rate_update(local, sband, sta,
478 IEEE80211_RC_BW_CHANGED);
0aaffa9b 479 }
d5522e03 480
30eb1dc2 481 return 0;
d5522e03
JB		 482}
483
9c6bd790
JB		 484/* frame sending functions */
485
66e67e41 486static void ieee80211_add_ht_ie(struct ieee80211_sub_if_data *sdata,
9dde6423 487 struct sk_buff *skb, u8 ap_ht_param,
66e67e41
JB		 488 struct ieee80211_supported_band *sband,
489 struct ieee80211_channel *channel,
490 enum ieee80211_smps_mode smps)
491{
66e67e41
JB		 492 u8 *pos;
493 u32 flags = channel->flags;
494 u16 cap;
495 struct ieee80211_sta_ht_cap ht_cap;
496
497 BUILD_BUG_ON(sizeof(ht_cap) != sizeof(sband->ht_cap));
498
66e67e41
JB		 499 memcpy(&ht_cap, &sband->ht_cap, sizeof(ht_cap));
500 ieee80211_apply_htcap_overrides(sdata, &ht_cap);
501
66e67e41
JB		 502 /* determine capability flags */
503 cap = ht_cap.cap;
504
9dde6423 505 switch (ap_ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) {
66e67e41
JB		 506 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
507 if (flags & IEEE80211_CHAN_NO_HT40PLUS) {
508 cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
509 cap &= ~IEEE80211_HT_CAP_SGI_40;
510 }
511 break;
512 case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
513 if (flags & IEEE80211_CHAN_NO_HT40MINUS) {
514 cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
515 cap &= ~IEEE80211_HT_CAP_SGI_40;
516 }
517 break;
518 }
519
24398e39
JB		 520 /*
521 * If 40 MHz was disabled associate as though we weren't
522 * capable of 40 MHz -- some broken APs will never fall
523 * back to trying to transmit in 20 MHz.
524 */
525 if (sdata->u.mgd.flags & IEEE80211_STA_DISABLE_40MHZ) {
526 cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
527 cap &= ~IEEE80211_HT_CAP_SGI_40;
528 }
529
66e67e41
JB		 530 /* set SM PS mode properly */
531 cap &= ~IEEE80211_HT_CAP_SM_PS;
532 switch (smps) {
533 case IEEE80211_SMPS_AUTOMATIC:
534 case IEEE80211_SMPS_NUM_MODES:
535 WARN_ON(1);
fc0561dc 536 fallthrough;
66e67e41
JB		 537 case IEEE80211_SMPS_OFF:
538 cap |= WLAN_HT_CAP_SM_PS_DISABLED <<
539 IEEE80211_HT_CAP_SM_PS_SHIFT;
540 break;
541 case IEEE80211_SMPS_STATIC:
542 cap |= WLAN_HT_CAP_SM_PS_STATIC <<
543 IEEE80211_HT_CAP_SM_PS_SHIFT;
544 break;
545 case IEEE80211_SMPS_DYNAMIC:
546 cap |= WLAN_HT_CAP_SM_PS_DYNAMIC <<
547 IEEE80211_HT_CAP_SM_PS_SHIFT;
548 break;
549 }
550
551 /* reserve and fill IE */
552 pos = skb_put(skb, sizeof(struct ieee80211_ht_cap) + 2);
553 ieee80211_ie_build_ht_cap(pos, &ht_cap, cap);
554}
555
322cd406
SS		 556/* This function determines vht capability flags for the association
557 * and builds the IE.
558 * Note - the function may set the owner of the MU-MIMO capability
559 */
d545daba
MP		 560static void ieee80211_add_vht_ie(struct ieee80211_sub_if_data *sdata,
561 struct sk_buff *skb,
b08fbbd8
JB		 562 struct ieee80211_supported_band *sband,
563 struct ieee80211_vht_cap *ap_vht_cap)
d545daba 564{
322cd406 565 struct ieee80211_local *local = sdata->local;
d545daba
MP		 566 u8 *pos;
567 u32 cap;
568 struct ieee80211_sta_vht_cap vht_cap;
c1cf6d4e 569 u32 mask, ap_bf_sts, our_bf_sts;
d545daba
MP		 570
571 BUILD_BUG_ON(sizeof(vht_cap) != sizeof(sband->vht_cap));
572
573 memcpy(&vht_cap, &sband->vht_cap, sizeof(vht_cap));
dd5ecfea 574 ieee80211_apply_vhtcap_overrides(sdata, &vht_cap);
d545daba
MP		 575
576 /* determine capability flags */
577 cap = vht_cap.cap;
578
f2d9d270 579 if (sdata->u.mgd.flags & IEEE80211_STA_DISABLE_80P80MHZ) {
575f0530
JB		 580 u32 bw = cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK;
581
582 cap &= ~IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK;
583 if (bw == IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ ||
584 bw == IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ)
585 cap |= IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ;
f2d9d270
JB		 586 }
587
588 if (sdata->u.mgd.flags & IEEE80211_STA_DISABLE_160MHZ) {
589 cap &= ~IEEE80211_VHT_CAP_SHORT_GI_160;
575f0530 590 cap &= ~IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK;
f2d9d270
JB		 591 }
592
b08fbbd8
JB		 593 /*
594 * Some APs apparently get confused if our capabilities are better
595 * than theirs, so restrict what we advertise in the assoc request.
596 */
597 if (!(ap_vht_cap->vht_cap_info &
598 cpu_to_le32(IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE)))
322cd406
SS		 599 cap &= ~(IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE |
600 IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE);
601 else if (!(ap_vht_cap->vht_cap_info &
602 cpu_to_le32(IEEE80211_VHT_CAP_MU_BEAMFORMER_CAPABLE)))
603 cap &= ~IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE;
604
605 /*
606 * If some other vif is using the MU-MIMO capablity we cannot associate
607 * using MU-MIMO - this will lead to contradictions in the group-id
608 * mechanism.
609 * Ownership is defined since association request, in order to avoid
610 * simultaneous associations with MU-MIMO.
611 */
612 if (cap & IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE) {
613 bool disable_mu_mimo = false;
614 struct ieee80211_sub_if_data *other;
615
616 list_for_each_entry_rcu(other, &local->interfaces, list) {
b5a33d52 617 if (other->vif.mu_mimo_owner) {
322cd406
SS		 618 disable_mu_mimo = true;
619 break;
620 }
621 }
622 if (disable_mu_mimo)
623 cap &= ~IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE;
624 else
b5a33d52 625 sdata->vif.mu_mimo_owner = true;
322cd406 626 }
b08fbbd8 627
c1cf6d4e
ES		 628 mask = IEEE80211_VHT_CAP_BEAMFORMEE_STS_MASK;
629
630 ap_bf_sts = le32_to_cpu(ap_vht_cap->vht_cap_info) & mask;
631 our_bf_sts = cap & mask;
632
633 if (ap_bf_sts < our_bf_sts) {
634 cap &= ~mask;
635 cap |= ap_bf_sts;
636 }
637
d545daba 638 /* reserve and fill IE */
d4950281 639 pos = skb_put(skb, sizeof(struct ieee80211_vht_cap) + 2);
d545daba
MP		 640 ieee80211_ie_build_vht_cap(pos, &vht_cap, cap);
641}
642
41cbb0f5
LC		 643/* This function determines HE capability flags for the association
644 * and builds the IE.
645 */
646static void ieee80211_add_he_ie(struct ieee80211_sub_if_data *sdata,
647 struct sk_buff *skb,
648 struct ieee80211_supported_band *sband)
649{
650 u8 *pos;
651 const struct ieee80211_sta_he_cap *he_cap = NULL;
b5db1aca 652 struct ieee80211_chanctx_conf *chanctx_conf;
41cbb0f5 653 u8 he_cap_size;
b5db1aca
HD		 654 bool reg_cap = false;
655
656 rcu_read_lock();
657 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
658 if (!WARN_ON_ONCE(!chanctx_conf))
659 reg_cap = cfg80211_chandef_usable(sdata->wdev.wiphy,
660 &chanctx_conf->def,
661 IEEE80211_CHAN_NO_HE);
662
663 rcu_read_unlock();
41cbb0f5
LC		 664
665 he_cap = ieee80211_get_he_sta_cap(sband);
b5db1aca 666 if (!he_cap || !reg_cap)
41cbb0f5
LC		 667 return;
668
669 /*
670 * TODO: the 1 added is because this temporarily is under the EXTENSION
671 * IE. Get rid of it when it moves.
672 */
673 he_cap_size =
674 2 + 1 + sizeof(he_cap->he_cap_elem) +
675 ieee80211_he_mcs_nss_size(&he_cap->he_cap_elem) +
676 ieee80211_he_ppe_size(he_cap->ppe_thres[0],
677 he_cap->he_cap_elem.phy_cap_info);
678 pos = skb_put(skb, he_cap_size);
679 ieee80211_ie_build_he_cap(pos, he_cap, pos + he_cap_size);
24a2042c
RM		 680
681 ieee80211_ie_build_he_6ghz_cap(sdata, skb);
41cbb0f5
LC		 682}
683
66e67e41
JB		 684static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata)
685{
686 struct ieee80211_local *local = sdata->local;
687 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
688 struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data;
689 struct sk_buff *skb;
690 struct ieee80211_mgmt *mgmt;
4d9ec73d 691 u8 *pos, qos_info, *ie_start;
66e67e41 692 size_t offset = 0, noffset;
2103dec1 693 int i, count, rates_len, supp_rates_len, shift;
66e67e41
JB		 694 u16 capab;
695 struct ieee80211_supported_band *sband;
55de908a
JB		 696 struct ieee80211_chanctx_conf *chanctx_conf;
697 struct ieee80211_channel *chan;
44f6d42c 698 u32 rates = 0;
2ff69b0e
JB		 699 struct element *ext_capa = NULL;
700
701 /* we know it's writable, cast away the const */
702 if (assoc_data->ie_len)
703 ext_capa = (void *)cfg80211_find_elem(WLAN_EID_EXT_CAPABILITY,
704 assoc_data->ie,
705 assoc_data->ie_len);
66e67e41 706
8d61ffa5 707 sdata_assert_lock(sdata);
66e67e41 708
55de908a
JB		 709 rcu_read_lock();
710 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
711 if (WARN_ON(!chanctx_conf)) {
712 rcu_read_unlock();
713 return;
714 }
4bf88530 715 chan = chanctx_conf->def.chan;
55de908a
JB		 716 rcu_read_unlock();
717 sband = local->hw.wiphy->bands[chan->band];
2103dec1 718 shift = ieee80211_vif_get_shift(&sdata->vif);
66e67e41
JB		 719
720 if (assoc_data->supp_rates_len) {
721 /*
722 * Get all rates supported by the device and the AP as
723 * some APs don't like getting a superset of their rates
724 * in the association request (e.g. D-Link DAP 1353 in
725 * b-only mode)...
726 */
2103dec1
SW		 727 rates_len = ieee80211_parse_bitrates(&chanctx_conf->def, sband,
728 assoc_data->supp_rates,
729 assoc_data->supp_rates_len,
730 &rates);
66e67e41
JB		 731 } else {
732 /*
733 * In case AP not provide any supported rates information
734 * before association, we send information element(s) with
735 * all rates that we support.
736 */
2103dec1
SW		 737 rates_len = 0;
738 for (i = 0; i < sband->n_bitrates; i++) {
2103dec1
SW		 739 rates |= BIT(i);
740 rates_len++;
741 }
66e67e41
JB		 742 }
743
744 skb = alloc_skb(local->hw.extra_tx_headroom +
745 sizeof(*mgmt) + /* bit too much but doesn't matter */
746 2 + assoc_data->ssid_len + /* SSID */
747 4 + rates_len + /* (extended) rates */
748 4 + /* power capability */
749 2 + 2 * sband->n_channels + /* supported channels */
750 2 + sizeof(struct ieee80211_ht_cap) + /* HT */
d4950281 751 2 + sizeof(struct ieee80211_vht_cap) + /* VHT */
41cbb0f5
LC		 752 2 + 1 + sizeof(struct ieee80211_he_cap_elem) + /* HE */
753 sizeof(struct ieee80211_he_mcs_nss_supp) +
754 IEEE80211_HE_PPE_THRES_MAX_LEN +
24a2042c 755 2 + 1 + sizeof(struct ieee80211_he_6ghz_capa) +
66e67e41 756 assoc_data->ie_len + /* extra IEs */
39404fee 757 (assoc_data->fils_kek_len ? 16 /* AES-SIV */ : 0) +
66e67e41
JB		 758 9, /* WMM */
759 GFP_KERNEL);
760 if (!skb)
761 return;
762
763 skb_reserve(skb, local->hw.extra_tx_headroom);
764
765 capab = WLAN_CAPABILITY_ESS;
766
57fbcce3 767 if (sband->band == NL80211_BAND_2GHZ) {
ea1b2b45
JB		 768 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
769 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
66e67e41
JB		 770 }
771
772 if (assoc_data->capability & WLAN_CAPABILITY_PRIVACY)
773 capab |= WLAN_CAPABILITY_PRIVACY;
774
775 if ((assoc_data->capability & WLAN_CAPABILITY_SPECTRUM_MGMT) &&
30686bf7 776 ieee80211_hw_check(&local->hw, SPECTRUM_MGMT))
66e67e41
JB		 777 capab |= WLAN_CAPABILITY_SPECTRUM_MGMT;
778
cd2f5dd7
AK		 779 if (ifmgd->flags & IEEE80211_STA_ENABLE_RRM)
780 capab |= WLAN_CAPABILITY_RADIO_MEASURE;
781
b080db58 782 mgmt = skb_put_zero(skb, 24);
66e67e41
JB		 783 memcpy(mgmt->da, assoc_data->bss->bssid, ETH_ALEN);
784 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
785 memcpy(mgmt->bssid, assoc_data->bss->bssid, ETH_ALEN);
786
787 if (!is_zero_ether_addr(assoc_data->prev_bssid)) {
788 skb_put(skb, 10);
789 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
790 IEEE80211_STYPE_REASSOC_REQ);
791 mgmt->u.reassoc_req.capab_info = cpu_to_le16(capab);
792 mgmt->u.reassoc_req.listen_interval =
793 cpu_to_le16(local->hw.conf.listen_interval);
794 memcpy(mgmt->u.reassoc_req.current_ap, assoc_data->prev_bssid,
795 ETH_ALEN);
796 } else {
797 skb_put(skb, 4);
798 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
799 IEEE80211_STYPE_ASSOC_REQ);
800 mgmt->u.assoc_req.capab_info = cpu_to_le16(capab);
801 mgmt->u.assoc_req.listen_interval =
802 cpu_to_le16(local->hw.conf.listen_interval);
803 }
804
805 /* SSID */
806 pos = skb_put(skb, 2 + assoc_data->ssid_len);
4d9ec73d 807 ie_start = pos;
66e67e41
JB		 808 *pos++ = WLAN_EID_SSID;
809 *pos++ = assoc_data->ssid_len;
810 memcpy(pos, assoc_data->ssid, assoc_data->ssid_len);
811
812 /* add all rates which were marked to be used above */
813 supp_rates_len = rates_len;
814 if (supp_rates_len > 8)
815 supp_rates_len = 8;
816
817 pos = skb_put(skb, supp_rates_len + 2);
818 *pos++ = WLAN_EID_SUPP_RATES;
819 *pos++ = supp_rates_len;
820
821 count = 0;
822 for (i = 0; i < sband->n_bitrates; i++) {
823 if (BIT(i) & rates) {
2103dec1
SW		 824 int rate = DIV_ROUND_UP(sband->bitrates[i].bitrate,
825 5 * (1 << shift));
826 *pos++ = (u8) rate;
66e67e41
JB		 827 if (++count == 8)
828 break;
829 }
830 }
831
832 if (rates_len > count) {
833 pos = skb_put(skb, rates_len - count + 2);
834 *pos++ = WLAN_EID_EXT_SUPP_RATES;
835 *pos++ = rates_len - count;
836
837 for (i++; i < sband->n_bitrates; i++) {
838 if (BIT(i) & rates) {
2103dec1
SW		 839 int rate;
840 rate = DIV_ROUND_UP(sband->bitrates[i].bitrate,
841 5 * (1 << shift));
842 *pos++ = (u8) rate;
66e67e41
JB		 843 }
844 }
845 }
846
cd2f5dd7
AK		 847 if (capab & WLAN_CAPABILITY_SPECTRUM_MGMT ||
848 capab & WLAN_CAPABILITY_RADIO_MEASURE) {
66e67e41
JB		 849 pos = skb_put(skb, 4);
850 *pos++ = WLAN_EID_PWR_CAPABILITY;
851 *pos++ = 2;
852 *pos++ = 0; /* min tx power */
0430c883
SW		 853 /* max tx power */
854 *pos++ = ieee80211_chandef_max_power(&chanctx_conf->def);
cd2f5dd7 855 }
66e67e41 856
2ff69b0e
JB		 857 /*
858 * Per spec, we shouldn't include the list of channels if we advertise
859 * support for extended channel switching, but we've always done that;
860 * (for now?) apply this restriction only on the (new) 6 GHz band.
861 */
862 if (capab & WLAN_CAPABILITY_SPECTRUM_MGMT &&
863 (sband->band != NL80211_BAND_6GHZ ||
864 !ext_capa || ext_capa->datalen < 1 ||
865 !(ext_capa->data[0] & WLAN_EXT_CAPA1_EXT_CHANNEL_SWITCHING))) {
66e67e41
JB		 866 /* TODO: get this in reg domain format */
867 pos = skb_put(skb, 2 * sband->n_channels + 2);
868 *pos++ = WLAN_EID_SUPPORTED_CHANNELS;
869 *pos++ = 2 * sband->n_channels;
870 for (i = 0; i < sband->n_channels; i++) {
871 *pos++ = ieee80211_frequency_to_channel(
872 sband->channels[i].center_freq);
873 *pos++ = 1; /* one channel in the subband*/
874 }
875 }
876
caf56338
SS		 877 /* Set MBSSID support for HE AP if needed */
878 if (ieee80211_hw_check(&local->hw, SUPPORTS_ONLY_HE_MULTI_BSSID) &&
2ff69b0e
JB		 879 !(ifmgd->flags & IEEE80211_STA_DISABLE_HE) && assoc_data->ie_len &&
880 ext_capa && ext_capa->datalen >= 3)
881 ext_capa->data[2] |= WLAN_EXT_CAPA3_MULTI_BSSID_SUPPORT;
caf56338 882
66e67e41 883 /* if present, add any custom IEs that go before HT */
b3f51e94 884 if (assoc_data->ie_len) {
66e67e41
JB		 885 static const u8 before_ht[] = {
886 WLAN_EID_SSID,
887 WLAN_EID_SUPP_RATES,
888 WLAN_EID_EXT_SUPP_RATES,
889 WLAN_EID_PWR_CAPABILITY,
890 WLAN_EID_SUPPORTED_CHANNELS,
891 WLAN_EID_RSN,
892 WLAN_EID_QOS_CAPA,
893 WLAN_EID_RRM_ENABLED_CAPABILITIES,
894 WLAN_EID_MOBILITY_DOMAIN,
8ed28747
JB		 895 WLAN_EID_FAST_BSS_TRANSITION, /* reassoc only */
896 WLAN_EID_RIC_DATA, /* reassoc only */
66e67e41
JB		 897 WLAN_EID_SUPPORTED_REGULATORY_CLASSES,
898 };
8ed28747
JB		 899 static const u8 after_ric[] = {
900 WLAN_EID_SUPPORTED_REGULATORY_CLASSES,
901 WLAN_EID_HT_CAPABILITY,
902 WLAN_EID_BSS_COEX_2040,
a7f26d80 903 /* luckily this is almost always there */
8ed28747
JB		 904 WLAN_EID_EXT_CAPABILITY,
905 WLAN_EID_QOS_TRAFFIC_CAPA,
906 WLAN_EID_TIM_BCAST_REQ,
907 WLAN_EID_INTERWORKING,
a7f26d80 908 /* 60 GHz (Multi-band, DMG, MMS) can't happen */
8ed28747
JB		 909 WLAN_EID_VHT_CAPABILITY,
910 WLAN_EID_OPMODE_NOTIF,
911 };
912
913 noffset = ieee80211_ie_split_ric(assoc_data->ie,
914 assoc_data->ie_len,
915 before_ht,
916 ARRAY_SIZE(before_ht),
917 after_ric,
918 ARRAY_SIZE(after_ric),
919 offset);
b952f4df 920 skb_put_data(skb, assoc_data->ie + offset, noffset - offset);
66e67e41
JB		 921 offset = noffset;
922 }
923
f2d9d270
JB		 924 if (WARN_ON_ONCE((ifmgd->flags & IEEE80211_STA_DISABLE_HT) &&
925 !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)))
926 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
927
57fa5e85
JB		 928 if (sband->band != NL80211_BAND_6GHZ &&
929 !(ifmgd->flags & IEEE80211_STA_DISABLE_HT))
9dde6423 930 ieee80211_add_ht_ie(sdata, skb, assoc_data->ap_ht_param,
04ecd257 931 sband, chan, sdata->smps_mode);
66e67e41 932
3de3802c
JB		 933 /* if present, add any custom IEs that go before VHT */
934 if (assoc_data->ie_len) {
935 static const u8 before_vht[] = {
a7f26d80
JB		 936 /*
937 * no need to list the ones split off before HT
938 * or generated here
939 */
3de3802c
JB		 940 WLAN_EID_BSS_COEX_2040,
941 WLAN_EID_EXT_CAPABILITY,
942 WLAN_EID_QOS_TRAFFIC_CAPA,
943 WLAN_EID_TIM_BCAST_REQ,
944 WLAN_EID_INTERWORKING,
a7f26d80 945 /* 60 GHz (Multi-band, DMG, MMS) can't happen */
3de3802c 946 };
8ed28747
JB		 947
948 /* RIC already taken above, so no need to handle here anymore */
3de3802c
JB		 949 noffset = ieee80211_ie_split(assoc_data->ie, assoc_data->ie_len,
950 before_vht, ARRAY_SIZE(before_vht),
951 offset);
b952f4df 952 skb_put_data(skb, assoc_data->ie + offset, noffset - offset);
3de3802c
JB		 953 offset = noffset;
954 }
955
41cbb0f5
LC		 956 /* if present, add any custom IEs that go before HE */
957 if (assoc_data->ie_len) {
958 static const u8 before_he[] = {
959 /*
960 * no need to list the ones split off before VHT
961 * or generated here
962 */
963 WLAN_EID_OPMODE_NOTIF,
964 WLAN_EID_EXTENSION, WLAN_EID_EXT_FUTURE_CHAN_GUIDANCE,
965 /* 11ai elements */
966 WLAN_EID_EXTENSION, WLAN_EID_EXT_FILS_SESSION,
967 WLAN_EID_EXTENSION, WLAN_EID_EXT_FILS_PUBLIC_KEY,
968 WLAN_EID_EXTENSION, WLAN_EID_EXT_FILS_KEY_CONFIRM,
969 WLAN_EID_EXTENSION, WLAN_EID_EXT_FILS_HLP_CONTAINER,
970 WLAN_EID_EXTENSION, WLAN_EID_EXT_FILS_IP_ADDR_ASSIGN,
971 /* TODO: add 11ah/11aj/11ak elements */
972 };
973
974 /* RIC already taken above, so no need to handle here anymore */
975 noffset = ieee80211_ie_split(assoc_data->ie, assoc_data->ie_len,
976 before_he, ARRAY_SIZE(before_he),
977 offset);
978 pos = skb_put(skb, noffset - offset);
979 memcpy(pos, assoc_data->ie + offset, noffset - offset);
980 offset = noffset;
981 }
982
57fa5e85
JB		 983 if (sband->band != NL80211_BAND_6GHZ &&
984 !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
b08fbbd8
JB		 985 ieee80211_add_vht_ie(sdata, skb, sband,
986 &assoc_data->ap_vht_cap);
d545daba 987
dc7eb0f2
ST		 988 /*
989 * If AP doesn't support HT, mark HE as disabled.
990 * If on the 5GHz band, make sure it supports VHT.
991 */
992 if (ifmgd->flags & IEEE80211_STA_DISABLE_HT ||
993 (sband->band == NL80211_BAND_5GHZ &&
994 ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
995 ifmgd->flags |= IEEE80211_STA_DISABLE_HE;
996
41cbb0f5
LC		 997 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HE))
998 ieee80211_add_he_ie(sdata, skb, sband);
999
1000 /* if present, add any custom non-vendor IEs that go after HE */
b3f51e94 1001 if (assoc_data->ie_len) {
66e67e41
JB		 1002 noffset = ieee80211_ie_split_vendor(assoc_data->ie,
1003 assoc_data->ie_len,
1004 offset);
b952f4df 1005 skb_put_data(skb, assoc_data->ie + offset, noffset - offset);
66e67e41
JB		 1006 offset = noffset;
1007 }
1008
76f0303d
JB		 1009 if (assoc_data->wmm) {
1010 if (assoc_data->uapsd) {
dc41e4d4
EP		 1011 qos_info = ifmgd->uapsd_queues;
1012 qos_info |= (ifmgd->uapsd_max_sp_len <<
66e67e41
JB		 1013 IEEE80211_WMM_IE_STA_QOSINFO_SP_SHIFT);
1014 } else {
1015 qos_info = 0;
1016 }
1017
40b861a0 1018 pos = ieee80211_add_wmm_info_ie(skb_put(skb, 9), qos_info);
66e67e41
JB		 1019 }
1020
1021 /* add any remaining custom (i.e. vendor specific here) IEs */
b3f51e94 1022 if (assoc_data->ie_len) {
66e67e41 1023 noffset = assoc_data->ie_len;
b952f4df 1024 skb_put_data(skb, assoc_data->ie + offset, noffset - offset);
66e67e41
JB		 1025 }
1026
39404fee
JM		 1027 if (assoc_data->fils_kek_len &&
1028 fils_encrypt_assoc_req(skb, assoc_data) < 0) {
1029 dev_kfree_skb(skb);
1030 return;
1031 }
1032
4d9ec73d
JM		 1033 pos = skb_tail_pointer(skb);
1034 kfree(ifmgd->assoc_req_ies);
1035 ifmgd->assoc_req_ies = kmemdup(ie_start, pos - ie_start, GFP_ATOMIC);
1036 ifmgd->assoc_req_ies_len = pos - ie_start;
1037
d4e36e55 1038 drv_mgd_prepare_tx(local, sdata, 0);
a1845fc7 1039
66e67e41 1040 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
30686bf7 1041 if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS))
1672c0e3
JB		 1042 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
1043 IEEE80211_TX_INTFL_MLME_CONN_TX;
66e67e41
JB		 1044 ieee80211_tx_skb(sdata, skb);
1045}
1046
572e0012
KV		 1047void ieee80211_send_pspoll(struct ieee80211_local *local,
1048 struct ieee80211_sub_if_data *sdata)
1049{
572e0012
KV		 1050 struct ieee80211_pspoll *pspoll;
1051 struct sk_buff *skb;
572e0012 1052
d8cd189e
KV		 1053 skb = ieee80211_pspoll_get(&local->hw, &sdata->vif);
1054 if (!skb)
572e0012 1055 return;
572e0012 1056
d8cd189e
KV		 1057 pspoll = (struct ieee80211_pspoll *) skb->data;
1058 pspoll->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
572e0012 1059
62ae67be
JB		 1060 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
1061 ieee80211_tx_skb(sdata, skb);
572e0012
KV		 1062}
1063
965bedad
JB		 1064void ieee80211_send_nullfunc(struct ieee80211_local *local,
1065 struct ieee80211_sub_if_data *sdata,
076cdcb1 1066 bool powersave)
965bedad
JB		 1067{
1068 struct sk_buff *skb;
d8cd189e 1069 struct ieee80211_hdr_3addr *nullfunc;
b6f35301 1070 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
965bedad 1071
41cbb0f5
LC		 1072 /* Don't send NDPs when STA is connected HE */
1073 if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1074 !(ifmgd->flags & IEEE80211_STA_DISABLE_HE))
1075 return;
1076
7c181f4f
BCD		 1077 skb = ieee80211_nullfunc_get(&local->hw, &sdata->vif,
1078 !ieee80211_hw_check(&local->hw, DOESNT_SUPPORT_QOS_NDP));
d8cd189e 1079 if (!skb)
965bedad 1080 return;
965bedad 1081
d8cd189e 1082 nullfunc = (struct ieee80211_hdr_3addr *) skb->data;
965bedad 1083 if (powersave)
d8cd189e 1084 nullfunc->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
965bedad 1085
6c17b77b
SF		 1086 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT |
1087 IEEE80211_TX_INTFL_OFFCHAN_TX_OK;
ff40b425 1088
30686bf7 1089 if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS))
ff40b425
PF		 1090 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS;
1091
392b9ffb 1092 if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL)
b6f35301
RM		 1093 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_USE_MINRATE;
1094
62ae67be 1095 ieee80211_tx_skb(sdata, skb);
965bedad
JB		 1096}
1097
d524215f
FF		 1098static void ieee80211_send_4addr_nullfunc(struct ieee80211_local *local,
1099 struct ieee80211_sub_if_data *sdata)
1100{
1101 struct sk_buff *skb;
1102 struct ieee80211_hdr *nullfunc;
1103 __le16 fc;
1104
1105 if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
1106 return;
1107
41cbb0f5
LC		 1108 /* Don't send NDPs when connected HE */
1109 if (!(sdata->u.mgd.flags & IEEE80211_STA_DISABLE_HE))
1110 return;
1111
d524215f 1112 skb = dev_alloc_skb(local->hw.extra_tx_headroom + 30);
d15b8459 1113 if (!skb)
d524215f 1114 return;
d15b8459 1115
d524215f
FF		 1116 skb_reserve(skb, local->hw.extra_tx_headroom);
1117
b080db58 1118 nullfunc = skb_put_zero(skb, 30);
d524215f
FF		 1119 fc = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC |
1120 IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS);
1121 nullfunc->frame_control = fc;
1122 memcpy(nullfunc->addr1, sdata->u.mgd.bssid, ETH_ALEN);
1123 memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
1124 memcpy(nullfunc->addr3, sdata->u.mgd.bssid, ETH_ALEN);
1125 memcpy(nullfunc->addr4, sdata->vif.addr, ETH_ALEN);
1126
1127 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
1128 ieee80211_tx_skb(sdata, skb);
1129}
1130
cc32abd4
JB		 1131/* spectrum management related things */
1132static void ieee80211_chswitch_work(struct work_struct *work)
1133{
1134 struct ieee80211_sub_if_data *sdata =
1135 container_of(work, struct ieee80211_sub_if_data, u.mgd.chswitch_work);
675a0b04 1136 struct ieee80211_local *local = sdata->local;
cc32abd4 1137 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
7578d575 1138 int ret;
cc32abd4 1139
9607e6b6 1140 if (!ieee80211_sdata_running(sdata))
cc32abd4
JB		 1141 return;
1142
8d61ffa5 1143 sdata_lock(sdata);
4c3ebc56
MK		 1144 mutex_lock(&local->mtx);
1145 mutex_lock(&local->chanctx_mtx);
1146
77fdaa12
JB		 1147 if (!ifmgd->associated)
1148 goto out;
cc32abd4 1149
4c3ebc56
MK		 1150 if (!sdata->vif.csa_active)
1151 goto out;
1152
1153 /*
1154 * using reservation isn't immediate as it may be deferred until later
1155 * with multi-vif. once reservation is complete it will re-schedule the
1156 * work with no reserved_chanctx so verify chandef to check if it
1157 * completed successfully
1158 */
1159
1160 if (sdata->reserved_chanctx) {
0007e943
IP		 1161 struct ieee80211_supported_band *sband = NULL;
1162 struct sta_info *mgd_sta = NULL;
1163 enum ieee80211_sta_rx_bandwidth bw = IEEE80211_STA_RX_BW_20;
1164
4c3ebc56
MK		 1165 /*
1166 * with multi-vif csa driver may call ieee80211_csa_finish()
1167 * many times while waiting for other interfaces to use their
1168 * reservations
1169 */
1170 if (sdata->reserved_ready)
1171 goto out;
1172
0007e943
IP		 1173 if (sdata->vif.bss_conf.chandef.width !=
1174 sdata->csa_chandef.width) {
1175 /*
1176 * For managed interface, we need to also update the AP
1177 * station bandwidth and align the rate scale algorithm
1178 * on the bandwidth change. Here we only consider the
1179 * bandwidth of the new channel definition (as channel
1180 * switch flow does not have the full HT/VHT/HE
1181 * information), assuming that if additional changes are
1182 * required they would be done as part of the processing
1183 * of the next beacon from the AP.
1184 */
1185 switch (sdata->csa_chandef.width) {
1186 case NL80211_CHAN_WIDTH_20_NOHT:
1187 case NL80211_CHAN_WIDTH_20:
1188 default:
1189 bw = IEEE80211_STA_RX_BW_20;
1190 break;
1191 case NL80211_CHAN_WIDTH_40:
1192 bw = IEEE80211_STA_RX_BW_40;
1193 break;
1194 case NL80211_CHAN_WIDTH_80:
1195 bw = IEEE80211_STA_RX_BW_80;
1196 break;
1197 case NL80211_CHAN_WIDTH_80P80:
1198 case NL80211_CHAN_WIDTH_160:
1199 bw = IEEE80211_STA_RX_BW_160;
1200 break;
1201 }
1202
1203 mgd_sta = sta_info_get(sdata, ifmgd->bssid);
1204 sband =
1205 local->hw.wiphy->bands[sdata->csa_chandef.chan->band];
1206 }
1207
1208 if (sdata->vif.bss_conf.chandef.width >
1209 sdata->csa_chandef.width) {
1210 mgd_sta->sta.bandwidth = bw;
1211 rate_control_rate_update(local, sband, mgd_sta,
1212 IEEE80211_RC_BW_CHANGED);
1213 }
1214
4c3ebc56
MK		 1215 ret = ieee80211_vif_use_reserved_context(sdata);
1216 if (ret) {
1217 sdata_info(sdata,
1218 "failed to use reserved channel context, disconnecting (err=%d)\n",
1219 ret);
1220 ieee80211_queue_work(&sdata->local->hw,
1221 &ifmgd->csa_connection_drop_work);
1222 goto out;
1223 }
1224
0007e943
IP		 1225 if (sdata->vif.bss_conf.chandef.width <
1226 sdata->csa_chandef.width) {
1227 mgd_sta->sta.bandwidth = bw;
1228 rate_control_rate_update(local, sband, mgd_sta,
1229 IEEE80211_RC_BW_CHANGED);
1230 }
1231
4c3ebc56
MK		 1232 goto out;
1233 }
1234
1235 if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef,
1236 &sdata->csa_chandef)) {
7578d575 1237 sdata_info(sdata,
4c3ebc56 1238 "failed to finalize channel switch, disconnecting\n");
7578d575
AN		 1239 ieee80211_queue_work(&sdata->local->hw,
1240 &ifmgd->csa_connection_drop_work);
1241 goto out;
1242 }
675a0b04 1243
0c21e632
LC		 1244 ifmgd->csa_waiting_bcn = true;
1245
1246 ieee80211_sta_reset_beacon_monitor(sdata);
1247 ieee80211_sta_reset_conn_monitor(sdata);
1248
1249out:
1250 mutex_unlock(&local->chanctx_mtx);
1251 mutex_unlock(&local->mtx);
1252 sdata_unlock(sdata);
1253}
1254
1255static void ieee80211_chswitch_post_beacon(struct ieee80211_sub_if_data *sdata)
1256{
1257 struct ieee80211_local *local = sdata->local;
1258 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
1259 int ret;
1260
1261 sdata_assert_lock(sdata);
1262
1263 WARN_ON(!sdata->vif.csa_active);
4c3ebc56 1264
a46992b4
LC		 1265 if (sdata->csa_block_tx) {
1266 ieee80211_wake_vif_queues(local, sdata,
1267 IEEE80211_QUEUE_STOP_REASON_CSA);
1268 sdata->csa_block_tx = false;
1269 }
7578d575 1270
0c21e632
LC		 1271 sdata->vif.csa_active = false;
1272 ifmgd->csa_waiting_bcn = false;
1273
f1d65583
LC		 1274 ret = drv_post_channel_switch(sdata);
1275 if (ret) {
1276 sdata_info(sdata,
1277 "driver post channel switch failed, disconnecting\n");
1278 ieee80211_queue_work(&local->hw,
1279 &ifmgd->csa_connection_drop_work);
0c21e632 1280 return;
f1d65583 1281 }
688b1ecf
LC		 1282
1283 cfg80211_ch_switch_notify(sdata->dev, &sdata->reserved_chandef);
cc32abd4
JB		 1284}
1285
5ce6e438
JB		 1286void ieee80211_chswitch_done(struct ieee80211_vif *vif, bool success)
1287{
55de908a
JB		 1288 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
1289 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
5ce6e438
JB		 1290
1291 trace_api_chswitch_done(sdata, success);
1292 if (!success) {
882a7c69
JB		 1293 sdata_info(sdata,
1294 "driver channel switch failed, disconnecting\n");
1295 ieee80211_queue_work(&sdata->local->hw,
1296 &ifmgd->csa_connection_drop_work);
1297 } else {
1298 ieee80211_queue_work(&sdata->local->hw, &ifmgd->chswitch_work);
5ce6e438 1299 }
5ce6e438
JB		 1300}
1301EXPORT_SYMBOL(ieee80211_chswitch_done);
1302
34f11cd3 1303static void ieee80211_chswitch_timer(struct timer_list *t)
cc32abd4
JB		 1304{
1305 struct ieee80211_sub_if_data *sdata =
34f11cd3 1306 from_timer(sdata, t, u.mgd.chswitch_timer);
5bb644a0 1307
9b7d72c1 1308 ieee80211_queue_work(&sdata->local->hw, &sdata->u.mgd.chswitch_work);
cc32abd4
JB		 1309}
1310
b9cc81d8
SS		 1311static void
1312ieee80211_sta_abort_chanswitch(struct ieee80211_sub_if_data *sdata)
1313{
1314 struct ieee80211_local *local = sdata->local;
1315
1316 if (!local->ops->abort_channel_switch)
1317 return;
1318
1319 mutex_lock(&local->mtx);
1320
1321 mutex_lock(&local->chanctx_mtx);
1322 ieee80211_vif_unreserve_chanctx(sdata);
1323 mutex_unlock(&local->chanctx_mtx);
1324
1325 if (sdata->csa_block_tx)
1326 ieee80211_wake_vif_queues(local, sdata,
1327 IEEE80211_QUEUE_STOP_REASON_CSA);
1328
1329 sdata->csa_block_tx = false;
1330 sdata->vif.csa_active = false;
1331
1332 mutex_unlock(&local->mtx);
1333
1334 drv_abort_channel_switch(sdata);
1335}
1336
37799e52 1337static void
4a3cb702 1338ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
2ba45384
LC		 1339 u64 timestamp, u32 device_timestamp,
1340 struct ieee802_11_elems *elems,
04a161f4 1341 bool beacon)
cc32abd4 1342{
b4f286a1 1343 struct ieee80211_local *local = sdata->local;
cc32abd4 1344 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
37799e52 1345 struct cfg80211_bss *cbss = ifmgd->associated;
4c3ebc56 1346 struct ieee80211_chanctx_conf *conf;
55de908a 1347 struct ieee80211_chanctx *chanctx;
57fbcce3 1348 enum nl80211_band current_band;
c0f17eb9 1349 struct ieee80211_csa_ie csa_ie;
6d027bcc 1350 struct ieee80211_channel_switch ch_switch;
2a333a0d 1351 struct ieee80211_bss *bss;
e6b7cde4 1352 int res;
cc32abd4 1353
8d61ffa5 1354 sdata_assert_lock(sdata);
77fdaa12 1355
37799e52 1356 if (!cbss)
cc32abd4
JB		 1357 return;
1358
b4f286a1 1359 if (local->scanning)
cc32abd4
JB		 1360 return;
1361
e6b7cde4 1362 current_band = cbss->channel->band;
2a333a0d 1363 bss = (void *)cbss->priv;
84469a45 1364 res = ieee80211_parse_ch_switch_ie(sdata, elems, current_band,
2a333a0d 1365 bss->vht_cap_info,
e6b7cde4 1366 ifmgd->flags,
c0f17eb9 1367 ifmgd->associated->bssid, &csa_ie);
fafd2bce
SS		 1368
1369 if (!res) {
1370 ch_switch.timestamp = timestamp;
1371 ch_switch.device_timestamp = device_timestamp;
2bf973ff 1372 ch_switch.block_tx = csa_ie.mode;
fafd2bce
SS		 1373 ch_switch.chandef = csa_ie.chandef;
1374 ch_switch.count = csa_ie.count;
1375 ch_switch.delay = csa_ie.max_switch_time;
1376 }
1377
b9cc81d8 1378 if (res < 0) {
b4f286a1 1379 ieee80211_queue_work(&local->hw,
882a7c69 1380 &ifmgd->csa_connection_drop_work);
cc32abd4 1381 return;
b9cc81d8
SS		 1382 }
1383
fafd2bce
SS		 1384 if (beacon && sdata->vif.csa_active && !ifmgd->csa_waiting_bcn) {
1385 if (res)
1386 ieee80211_sta_abort_chanswitch(sdata);
1387 else
1388 drv_channel_switch_rx_beacon(sdata, &ch_switch);
b9cc81d8
SS		 1389 return;
1390 } else if (sdata->vif.csa_active || res) {
1391 /* disregard subsequent announcements if already processing */
1392 return;
1393 }
cd64f2a9 1394
c0f17eb9 1395 if (!cfg80211_chandef_usable(local->hw.wiphy, &csa_ie.chandef,
85220d71
JB		 1396 IEEE80211_CHAN_DISABLED)) {
1397 sdata_info(sdata,
b6011960
TP		 1398 "AP %pM switches to unsupported channel "
1399 "(%d.%03d MHz, width:%d, CF1/2: %d.%03d/%d MHz), "
1400 "disconnecting\n",
e6b7cde4 1401 ifmgd->associated->bssid,
c0f17eb9 1402 csa_ie.chandef.chan->center_freq,
b6011960 1403 csa_ie.chandef.chan->freq_offset,
c0f17eb9 1404 csa_ie.chandef.width, csa_ie.chandef.center_freq1,
b6011960 1405 csa_ie.chandef.freq1_offset,
c0f17eb9 1406 csa_ie.chandef.center_freq2);
85220d71
JB		 1407 ieee80211_queue_work(&local->hw,
1408 &ifmgd->csa_connection_drop_work);
1409 return;
1410 }
1411
f84eaa10 1412 if (cfg80211_chandef_identical(&csa_ie.chandef,
9792875c
SS		 1413 &sdata->vif.bss_conf.chandef) &&
1414 (!csa_ie.mode || !beacon)) {
f84eaa10
JB		 1415 if (ifmgd->csa_ignored_same_chan)
1416 return;
1417 sdata_info(sdata,
1418 "AP %pM tries to chanswitch to same channel, ignore\n",
1419 ifmgd->associated->bssid);
1420 ifmgd->csa_ignored_same_chan = true;
1421 return;
1422 }
1423
c5a71688
AN		 1424 /*
1425 * Drop all TDLS peers - either we disconnect or move to a different
1426 * channel from this point on. There's no telling what our peer will do.
1427 * The TDLS WIDER_BW scenario is also problematic, as peers might now
1428 * have an incompatible wider chandef.
1429 */
1430 ieee80211_teardown_tdls_peers(sdata);
1431
4c3ebc56 1432 mutex_lock(&local->mtx);
7578d575 1433 mutex_lock(&local->chanctx_mtx);
4c3ebc56
MK		 1434 conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
1435 lockdep_is_held(&local->chanctx_mtx));
1436 if (!conf) {
1437 sdata_info(sdata,
1438 "no channel context assigned to vif?, disconnecting\n");
f3b0bbb3 1439 goto drop_connection;
4c3ebc56
MK		 1440 }
1441
1442 chanctx = container_of(conf, struct ieee80211_chanctx, conf);
1443
0f791eb4 1444 if (local->use_chanctx &&
30686bf7 1445 !ieee80211_hw_check(&local->hw, CHANCTX_STA_CSA)) {
0f791eb4
LC		 1446 sdata_info(sdata,
1447 "driver doesn't support chan-switch with channel contexts\n");
f3b0bbb3 1448 goto drop_connection;
55de908a
JB		 1449 }
1450
6d027bcc
LC		 1451 if (drv_pre_channel_switch(sdata, &ch_switch)) {
1452 sdata_info(sdata,
1453 "preparing for channel switch failed, disconnecting\n");
f3b0bbb3 1454 goto drop_connection;
6d027bcc
LC		 1455 }
1456
4c3ebc56
MK		 1457 res = ieee80211_vif_reserve_chanctx(sdata, &csa_ie.chandef,
1458 chanctx->mode, false);
1459 if (res) {
55de908a 1460 sdata_info(sdata,
4c3ebc56
MK		 1461 "failed to reserve channel context for channel switch, disconnecting (err=%d)\n",
1462 res);
f3b0bbb3 1463 goto drop_connection;
55de908a 1464 }
b4f286a1 1465 mutex_unlock(&local->chanctx_mtx);
55de908a 1466
c46a73f3 1467 sdata->vif.csa_active = true;
4c3ebc56 1468 sdata->csa_chandef = csa_ie.chandef;
2bf973ff 1469 sdata->csa_block_tx = csa_ie.mode;
f84eaa10 1470 ifmgd->csa_ignored_same_chan = false;
55de908a 1471
59af6928 1472 if (sdata->csa_block_tx)
a46992b4
LC		 1473 ieee80211_stop_vif_queues(local, sdata,
1474 IEEE80211_QUEUE_STOP_REASON_CSA);
59af6928 1475 mutex_unlock(&local->mtx);
57eebdf3 1476
2f457293
LC		 1477 cfg80211_ch_switch_started_notify(sdata->dev, &csa_ie.chandef,
1478 csa_ie.count);
1479
b4f286a1 1480 if (local->ops->channel_switch) {
5ce6e438 1481 /* use driver's channel switch callback */
0f791eb4 1482 drv_channel_switch(local, sdata, &ch_switch);
5ce6e438
JB		 1483 return;
1484 }
1485
1486 /* channel switch handled in software */
c0f17eb9 1487 if (csa_ie.count <= 1)
b4f286a1 1488 ieee80211_queue_work(&local->hw, &ifmgd->chswitch_work);
57eebdf3 1489 else
cc32abd4 1490 mod_timer(&ifmgd->chswitch_timer,
ff1e417c
LC		 1491 TU_TO_EXP_TIME((csa_ie.count - 1) *
1492 cbss->beacon_interval));
f3b0bbb3
JB		 1493 return;
1494 drop_connection:
6c18b27d
EG		 1495 /*
1496 * This is just so that the disconnect flow will know that
1497 * we were trying to switch channel and failed. In case the
1498 * mode is 1 (we are not allowed to Tx), we will know not to
1499 * send a deauthentication frame. Those two fields will be
1500 * reset when the disconnection worker runs.
1501 */
1502 sdata->vif.csa_active = true;
2bf973ff 1503 sdata->csa_block_tx = csa_ie.mode;
6c18b27d 1504
f3b0bbb3
JB		 1505 ieee80211_queue_work(&local->hw, &ifmgd->csa_connection_drop_work);
1506 mutex_unlock(&local->chanctx_mtx);
1507 mutex_unlock(&local->mtx);
cc32abd4
JB		 1508}
1509
24a4e400
SG		 1510static bool
1511ieee80211_find_80211h_pwr_constr(struct ieee80211_sub_if_data *sdata,
1512 struct ieee80211_channel *channel,
1513 const u8 *country_ie, u8 country_ie_len,
1514 const u8 *pwr_constr_elem,
1515 int *chan_pwr, int *pwr_reduction)
cc32abd4 1516{
04b7b2ff
JB		 1517 struct ieee80211_country_ie_triplet *triplet;
1518 int chan = ieee80211_frequency_to_channel(channel->center_freq);
24a4e400 1519 int i, chan_increment;
04b7b2ff 1520 bool have_chan_pwr = false;
cc32abd4 1521
04b7b2ff
JB		 1522 /* Invalid IE */
1523 if (country_ie_len % 2 || country_ie_len < IEEE80211_COUNTRY_IE_MIN_LEN)
24a4e400 1524 return false;
cc32abd4 1525
04b7b2ff
JB		 1526 triplet = (void *)(country_ie + 3);
1527 country_ie_len -= 3;
1528
1529 switch (channel->band) {
1530 default:
1531 WARN_ON_ONCE(1);
fc0561dc 1532 fallthrough;
57fbcce3
JB		 1533 case NL80211_BAND_2GHZ:
1534 case NL80211_BAND_60GHZ:
04b7b2ff
JB		 1535 chan_increment = 1;
1536 break;
57fbcce3 1537 case NL80211_BAND_5GHZ:
6fcb56ce 1538 case NL80211_BAND_6GHZ:
04b7b2ff
JB		 1539 chan_increment = 4;
1540 break;
cc32abd4 1541 }
04b7b2ff
JB		 1542
1543 /* find channel */
1544 while (country_ie_len >= 3) {
1545 u8 first_channel = triplet->chans.first_channel;
1546
1547 if (first_channel >= IEEE80211_COUNTRY_EXTENSION_ID)
1548 goto next;
1549
1550 for (i = 0; i < triplet->chans.num_channels; i++) {
1551 if (first_channel + i * chan_increment == chan) {
1552 have_chan_pwr = true;
24a4e400 1553 *chan_pwr = triplet->chans.max_power;
04b7b2ff
JB		 1554 break;
1555 }
1556 }
1557 if (have_chan_pwr)
1558 break;
1559
1560 next:
1561 triplet++;
1562 country_ie_len -= 3;
1563 }
1564
a5fee9cb 1565 if (have_chan_pwr && pwr_constr_elem)
24a4e400 1566 *pwr_reduction = *pwr_constr_elem;
a5fee9cb
MB		 1567 else
1568 *pwr_reduction = 0;
1569
24a4e400
SG		 1570 return have_chan_pwr;
1571}
1572
c8d65917
SG		 1573static void ieee80211_find_cisco_dtpc(struct ieee80211_sub_if_data *sdata,
1574 struct ieee80211_channel *channel,
1575 const u8 *cisco_dtpc_ie,
1576 int *pwr_level)
1577{
1578 /* From practical testing, the first data byte of the DTPC element
1579 * seems to contain the requested dBm level, and the CLI on Cisco
1580 * APs clearly state the range is -127 to 127 dBm, which indicates
1581 * a signed byte, although it seemingly never actually goes negative.
1582 * The other byte seems to always be zero.
1583 */
1584 *pwr_level = (__s8)cisco_dtpc_ie[4];
1585}
1586
24a4e400
SG		 1587static u32 ieee80211_handle_pwr_constr(struct ieee80211_sub_if_data *sdata,
1588 struct ieee80211_channel *channel,
1589 struct ieee80211_mgmt *mgmt,
1590 const u8 *country_ie, u8 country_ie_len,
c8d65917
SG		 1591 const u8 *pwr_constr_ie,
1592 const u8 *cisco_dtpc_ie)
24a4e400 1593{
c8d65917
SG		 1594 bool has_80211h_pwr = false, has_cisco_pwr = false;
1595 int chan_pwr = 0, pwr_reduction_80211h = 0;
1596 int pwr_level_cisco, pwr_level_80211h;
24a4e400 1597 int new_ap_level;
a5fee9cb 1598 __le16 capab = mgmt->u.probe_resp.capab_info;
04b7b2ff 1599
a5fee9cb
MB		 1600 if (country_ie &&
1601 (capab & cpu_to_le16(WLAN_CAPABILITY_SPECTRUM_MGMT) ||
1602 capab & cpu_to_le16(WLAN_CAPABILITY_RADIO_MEASURE))) {
24a4e400
SG		 1603 has_80211h_pwr = ieee80211_find_80211h_pwr_constr(
1604 sdata, channel, country_ie, country_ie_len,
1605 pwr_constr_ie, &chan_pwr, &pwr_reduction_80211h);
c8d65917
SG		 1606 pwr_level_80211h =
1607 max_t(int, 0, chan_pwr - pwr_reduction_80211h);
1608 }
1609
1610 if (cisco_dtpc_ie) {
1611 ieee80211_find_cisco_dtpc(
1612 sdata, channel, cisco_dtpc_ie, &pwr_level_cisco);
1613 has_cisco_pwr = true;
24a4e400 1614 }
04b7b2ff 1615
c8d65917 1616 if (!has_80211h_pwr && !has_cisco_pwr)
1ea6f9c0 1617 return 0;
04b7b2ff 1618
c8d65917
SG		 1619 /* If we have both 802.11h and Cisco DTPC, apply both limits
1620 * by picking the smallest of the two power levels advertised.
1621 */
1622 if (has_80211h_pwr &&
1623 (!has_cisco_pwr || pwr_level_80211h <= pwr_level_cisco)) {
a87da0cb
JB		 1624 new_ap_level = pwr_level_80211h;
1625
1626 if (sdata->ap_power_level == new_ap_level)
1627 return 0;
1628
cef2fc1c
JL		 1629 sdata_dbg(sdata,
1630 "Limiting TX power to %d (%d - %d) dBm as advertised by %pM\n",
1631 pwr_level_80211h, chan_pwr, pwr_reduction_80211h,
1632 sdata->u.mgd.bssid);
c8d65917 1633 } else { /* has_cisco_pwr is always true here. */
a87da0cb
JB		 1634 new_ap_level = pwr_level_cisco;
1635
1636 if (sdata->ap_power_level == new_ap_level)
1637 return 0;
1638
cef2fc1c
JL		 1639 sdata_dbg(sdata,
1640 "Limiting TX power to %d dBm as advertised by %pM\n",
1641 pwr_level_cisco, sdata->u.mgd.bssid);
c8d65917 1642 }
04b7b2ff 1643
1ea6f9c0
JB		 1644 sdata->ap_power_level = new_ap_level;
1645 if (__ieee80211_recalc_txpower(sdata))
1646 return BSS_CHANGED_TXPOWER;
1647 return 0;
cc32abd4
JB		 1648}
1649
965bedad
JB		 1650/* powersave */
1651static void ieee80211_enable_ps(struct ieee80211_local *local,
1652 struct ieee80211_sub_if_data *sdata)
1653{
1654 struct ieee80211_conf *conf = &local->hw.conf;
1655
d5edaedc
JB		 1656 /*
1657 * If we are scanning right now then the parameters will
1658 * take effect when scan finishes.
1659 */
fbe9c429 1660 if (local->scanning)
d5edaedc
JB		 1661 return;
1662
965bedad 1663 if (conf->dynamic_ps_timeout > 0 &&
30686bf7 1664 !ieee80211_hw_check(&local->hw, SUPPORTS_DYNAMIC_PS)) {
965bedad
JB		 1665 mod_timer(&local->dynamic_ps_timer, jiffies +
1666 msecs_to_jiffies(conf->dynamic_ps_timeout));
1667 } else {
30686bf7 1668 if (ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK))
076cdcb1 1669 ieee80211_send_nullfunc(local, sdata, true);
375177bf 1670
30686bf7
JB		 1671 if (ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK) &&
1672 ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS))
2a13052f
JO		 1673 return;
1674
1675 conf->flags |= IEEE80211_CONF_PS;
1676 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
965bedad
JB		 1677 }
1678}
1679
1680static void ieee80211_change_ps(struct ieee80211_local *local)
1681{
1682 struct ieee80211_conf *conf = &local->hw.conf;
1683
1684 if (local->ps_sdata) {
965bedad
JB		 1685 ieee80211_enable_ps(local, local->ps_sdata);
1686 } else if (conf->flags & IEEE80211_CONF_PS) {
1687 conf->flags &= ~IEEE80211_CONF_PS;
1688 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1689 del_timer_sync(&local->dynamic_ps_timer);
1690 cancel_work_sync(&local->dynamic_ps_enable_work);
1691 }
1692}
1693
808118cb
JY		 1694static bool ieee80211_powersave_allowed(struct ieee80211_sub_if_data *sdata)
1695{
1696 struct ieee80211_if_managed *mgd = &sdata->u.mgd;
1697 struct sta_info *sta = NULL;
c2c98fde 1698 bool authorized = false;
808118cb
JY		 1699
1700 if (!mgd->powersave)
1701 return false;
1702
05cb9108
JB		 1703 if (mgd->broken_ap)
1704 return false;
1705
808118cb
JY		 1706 if (!mgd->associated)
1707 return false;
1708
392b9ffb 1709 if (mgd->flags & IEEE80211_STA_CONNECTION_POLL)
808118cb
JY		 1710 return false;
1711
989c6505 1712 if (!mgd->have_beacon)
ce857888
AB		 1713 return false;
1714
808118cb
JY		 1715 rcu_read_lock();
1716 sta = sta_info_get(sdata, mgd->bssid);
1717 if (sta)
c2c98fde 1718 authorized = test_sta_flag(sta, WLAN_STA_AUTHORIZED);
808118cb
JY		 1719 rcu_read_unlock();
1720
c2c98fde 1721 return authorized;
808118cb
JY		 1722}
1723
965bedad 1724/* need to hold RTNL or interface lock */
4a733ef1 1725void ieee80211_recalc_ps(struct ieee80211_local *local)
965bedad
JB		 1726{
1727 struct ieee80211_sub_if_data *sdata, *found = NULL;
1728 int count = 0;
195e294d 1729 int timeout;
965bedad 1730
30686bf7 1731 if (!ieee80211_hw_check(&local->hw, SUPPORTS_PS)) {
965bedad
JB		 1732 local->ps_sdata = NULL;
1733 return;
1734 }
1735
1736 list_for_each_entry(sdata, &local->interfaces, list) {
9607e6b6 1737 if (!ieee80211_sdata_running(sdata))
965bedad 1738 continue;
8c7914de
RM		 1739 if (sdata->vif.type == NL80211_IFTYPE_AP) {
1740 /* If an AP vif is found, then disable PS
1741 * by setting the count to zero thereby setting
1742 * ps_sdata to NULL.
1743 */
1744 count = 0;
1745 break;
1746 }
965bedad
JB		 1747 if (sdata->vif.type != NL80211_IFTYPE_STATION)
1748 continue;
1749 found = sdata;
1750 count++;
1751 }
1752
808118cb 1753 if (count == 1 && ieee80211_powersave_allowed(found)) {
4a733ef1 1754 u8 dtimper = found->u.mgd.dtim_period;
10f644a4 1755
ff616381 1756 timeout = local->dynamic_ps_forced_timeout;
4a733ef1
JB		 1757 if (timeout < 0)
1758 timeout = 100;
09b85568 1759 local->hw.conf.dynamic_ps_timeout = timeout;
195e294d 1760
4a733ef1
JB		 1761 /* If the TIM IE is invalid, pretend the value is 1 */
1762 if (!dtimper)
1763 dtimper = 1;
1764
1765 local->hw.conf.ps_dtim_period = dtimper;
1766 local->ps_sdata = found;
10f644a4 1767 } else {
965bedad 1768 local->ps_sdata = NULL;
10f644a4 1769 }
965bedad
JB		 1770
1771 ieee80211_change_ps(local);
1772}
1773
ab095877
EP		 1774void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata)
1775{
1776 bool ps_allowed = ieee80211_powersave_allowed(sdata);
1777
1778 if (sdata->vif.bss_conf.ps != ps_allowed) {
1779 sdata->vif.bss_conf.ps = ps_allowed;
1780 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_PS);
1781 }
1782}
1783
965bedad
JB		 1784void ieee80211_dynamic_ps_disable_work(struct work_struct *work)
1785{
1786 struct ieee80211_local *local =
1787 container_of(work, struct ieee80211_local,
1788 dynamic_ps_disable_work);
1789
1790 if (local->hw.conf.flags & IEEE80211_CONF_PS) {
1791 local->hw.conf.flags &= ~IEEE80211_CONF_PS;
1792 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1793 }
1794
1795 ieee80211_wake_queues_by_reason(&local->hw,
445ea4e8 1796 IEEE80211_MAX_QUEUE_MAP,
cca07b00
LC		 1797 IEEE80211_QUEUE_STOP_REASON_PS,
1798 false);
965bedad
JB		 1799}
1800
1801void ieee80211_dynamic_ps_enable_work(struct work_struct *work)
1802{
1803 struct ieee80211_local *local =
1804 container_of(work, struct ieee80211_local,
1805 dynamic_ps_enable_work);
1806 struct ieee80211_sub_if_data *sdata = local->ps_sdata;
5e34069c 1807 struct ieee80211_if_managed *ifmgd;
1ddc2867
RM		 1808 unsigned long flags;
1809 int q;
965bedad
JB		 1810
1811 /* can only happen when PS was just disabled anyway */
1812 if (!sdata)
1813 return;
1814
5e34069c
CL		 1815 ifmgd = &sdata->u.mgd;
1816
965bedad
JB		 1817 if (local->hw.conf.flags & IEEE80211_CONF_PS)
1818 return;
1819
09b85568 1820 if (local->hw.conf.dynamic_ps_timeout > 0) {
77b7023a
AN		 1821 /* don't enter PS if TX frames are pending */
1822 if (drv_tx_frames_pending(local)) {
1ddc2867
RM		 1823 mod_timer(&local->dynamic_ps_timer, jiffies +
1824 msecs_to_jiffies(
1825 local->hw.conf.dynamic_ps_timeout));
1826 return;
1827 }
77b7023a
AN		 1828
1829 /*
1830 * transmission can be stopped by others which leads to
1831 * dynamic_ps_timer expiry. Postpone the ps timer if it
1832 * is not the actual idle state.
1833 */
1834 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
1835 for (q = 0; q < local->hw.queues; q++) {
1836 if (local->queue_stop_reasons[q]) {
1837 spin_unlock_irqrestore(&local->queue_stop_reason_lock,
1838 flags);
1839 mod_timer(&local->dynamic_ps_timer, jiffies +
1840 msecs_to_jiffies(
1841 local->hw.conf.dynamic_ps_timeout));
1842 return;
1843 }
1844 }
1845 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
1ddc2867 1846 }
1ddc2867 1847
30686bf7 1848 if (ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK) &&
9c38a8b4 1849 !(ifmgd->flags & IEEE80211_STA_NULLFUNC_ACKED)) {
a1598383 1850 if (drv_tx_frames_pending(local)) {
e8306f98
VN		 1851 mod_timer(&local->dynamic_ps_timer, jiffies +
1852 msecs_to_jiffies(
1853 local->hw.conf.dynamic_ps_timeout));
a1598383 1854 } else {
076cdcb1 1855 ieee80211_send_nullfunc(local, sdata, true);
e8306f98 1856 /* Flush to get the tx status of nullfunc frame */
3b24f4c6 1857 ieee80211_flush_queues(local, sdata, false);
e8306f98 1858 }
f3e85b9e
VN		 1859 }
1860
30686bf7
JB		 1861 if (!(ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS) &&
1862 ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK)) ||
375177bf
VN		 1863 (ifmgd->flags & IEEE80211_STA_NULLFUNC_ACKED)) {
1864 ifmgd->flags &= ~IEEE80211_STA_NULLFUNC_ACKED;
1865 local->hw.conf.flags |= IEEE80211_CONF_PS;
1866 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1867 }
965bedad
JB		 1868}
1869
34f11cd3 1870void ieee80211_dynamic_ps_timer(struct timer_list *t)
965bedad 1871{
34f11cd3 1872 struct ieee80211_local *local = from_timer(local, t, dynamic_ps_timer);
965bedad 1873
42935eca 1874 ieee80211_queue_work(&local->hw, &local->dynamic_ps_enable_work);
965bedad
JB		 1875}
1876
164eb02d
SW		 1877void ieee80211_dfs_cac_timer_work(struct work_struct *work)
1878{
a85a7e28 1879 struct delayed_work *delayed_work = to_delayed_work(work);
164eb02d
SW		 1880 struct ieee80211_sub_if_data *sdata =
1881 container_of(delayed_work, struct ieee80211_sub_if_data,
1882 dfs_cac_timer_work);
d2859df5 1883 struct cfg80211_chan_def chandef = sdata->vif.bss_conf.chandef;
164eb02d 1884
34a3740d
JB		 1885 mutex_lock(&sdata->local->mtx);
1886 if (sdata->wdev.cac_started) {
1887 ieee80211_vif_release_channel(sdata);
1888 cfg80211_cac_event(sdata->dev, &chandef,
1889 NL80211_RADAR_CAC_FINISHED,
1890 GFP_KERNEL);
1891 }
1892 mutex_unlock(&sdata->local->mtx);
164eb02d
SW		 1893}
1894
02219b3a
JB		 1895static bool
1896__ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata)
1897{
1898 struct ieee80211_local *local = sdata->local;
1899 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
cc72f6e2 1900 bool ret = false;
02219b3a
JB		 1901 int ac;
1902
1903 if (local->hw.queues < IEEE80211_NUM_ACS)
1904 return false;
1905
1906 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
1907 struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac];
1908 int non_acm_ac;
1909 unsigned long now = jiffies;
1910
1911 if (tx_tspec->action == TX_TSPEC_ACTION_NONE &&
1912 tx_tspec->admitted_time &&
1913 time_after(now, tx_tspec->time_slice_start + HZ)) {
1914 tx_tspec->consumed_tx_time = 0;
1915 tx_tspec->time_slice_start = now;
1916
1917 if (tx_tspec->downgraded)
1918 tx_tspec->action =
1919 TX_TSPEC_ACTION_STOP_DOWNGRADE;
1920 }
1921
1922 switch (tx_tspec->action) {
1923 case TX_TSPEC_ACTION_STOP_DOWNGRADE:
1924 /* take the original parameters */
1925 if (drv_conf_tx(local, sdata, ac, &sdata->tx_conf[ac]))
1926 sdata_err(sdata,
1927 "failed to set TX queue parameters for queue %d\n",
1928 ac);
1929 tx_tspec->action = TX_TSPEC_ACTION_NONE;
1930 tx_tspec->downgraded = false;
1931 ret = true;
1932 break;
1933 case TX_TSPEC_ACTION_DOWNGRADE:
1934 if (time_after(now, tx_tspec->time_slice_start + HZ)) {
1935 tx_tspec->action = TX_TSPEC_ACTION_NONE;
1936 ret = true;
1937 break;
1938 }
1939 /* downgrade next lower non-ACM AC */
1940 for (non_acm_ac = ac + 1;
1941 non_acm_ac < IEEE80211_NUM_ACS;
1942 non_acm_ac++)
1943 if (!(sdata->wmm_acm & BIT(7 - 2 * non_acm_ac)))
1944 break;
93db1d9e
JB		 1945 /* Usually the loop will result in using BK even if it
1946 * requires admission control, but such a configuration
1947 * makes no sense and we have to transmit somehow - the
1948 * AC selection does the same thing.
1949 * If we started out trying to downgrade from BK, then
1950 * the extra condition here might be needed.
02219b3a 1951 */
93db1d9e
JB		 1952 if (non_acm_ac >= IEEE80211_NUM_ACS)
1953 non_acm_ac = IEEE80211_AC_BK;
02219b3a
JB		 1954 if (drv_conf_tx(local, sdata, ac,
1955 &sdata->tx_conf[non_acm_ac]))
1956 sdata_err(sdata,
1957 "failed to set TX queue parameters for queue %d\n",
1958 ac);
1959 tx_tspec->action = TX_TSPEC_ACTION_NONE;
1960 ret = true;
1961 schedule_delayed_work(&ifmgd->tx_tspec_wk,
1962 tx_tspec->time_slice_start + HZ - now + 1);
1963 break;
1964 case TX_TSPEC_ACTION_NONE:
1965 /* nothing now */
1966 break;
1967 }
1968 }
1969
1970 return ret;
1971}
1972
1973void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata)
1974{
1975 if (__ieee80211_sta_handle_tspec_ac_params(sdata))
1976 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
1977}
1978
1979static void ieee80211_sta_handle_tspec_ac_params_wk(struct work_struct *work)
1980{
1981 struct ieee80211_sub_if_data *sdata;
1982
1983 sdata = container_of(work, struct ieee80211_sub_if_data,
1984 u.mgd.tx_tspec_wk.work);
1985 ieee80211_sta_handle_tspec_ac_params(sdata);
1986}
1987
60f8b39c 1988/* MLME */
41cbb0f5
LC		 1989static bool
1990ieee80211_sta_wmm_params(struct ieee80211_local *local,
1991 struct ieee80211_sub_if_data *sdata,
1992 const u8 *wmm_param, size_t wmm_param_len,
1993 const struct ieee80211_mu_edca_param_set *mu_edca)
f0706e82 1994{
2ed77ea6 1995 struct ieee80211_tx_queue_params params[IEEE80211_NUM_ACS];
4ced3f74 1996 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
f0706e82 1997 size_t left;
2e249fc3 1998 int count, mu_edca_count, ac;
4a3cb702
JB		 1999 const u8 *pos;
2000 u8 uapsd_queues = 0;
f0706e82 2001
e1b3ec1a 2002 if (!local->ops->conf_tx)
7d25745d 2003 return false;
e1b3ec1a 2004
32c5057b 2005 if (local->hw.queues < IEEE80211_NUM_ACS)
7d25745d 2006 return false;
3434fbd3
JB		 2007
2008 if (!wmm_param)
7d25745d 2009 return false;
3434fbd3 2010
f0706e82 2011 if (wmm_param_len < 8 || wmm_param[5] /* version */ != 1)
7d25745d 2012 return false;
ab13315a
KV		 2013
2014 if (ifmgd->flags & IEEE80211_STA_UAPSD_ENABLED)
dc41e4d4 2015 uapsd_queues = ifmgd->uapsd_queues;
ab13315a 2016
f0706e82 2017 count = wmm_param[6] & 0x0f;
2e249fc3
ST		 2018 /* -1 is the initial value of ifmgd->mu_edca_last_param_set.
2019 * if mu_edca was preset before and now it disappeared tell
2020 * the driver about it.
2021 */
2022 mu_edca_count = mu_edca ? mu_edca->mu_qos_info & 0x0f : -1;
2023 if (count == ifmgd->wmm_last_param_set &&
2024 mu_edca_count == ifmgd->mu_edca_last_param_set)
7d25745d 2025 return false;
46900298 2026 ifmgd->wmm_last_param_set = count;
2e249fc3 2027 ifmgd->mu_edca_last_param_set = mu_edca_count;
f0706e82
JB		 2028
2029 pos = wmm_param + 8;
2030 left = wmm_param_len - 8;
2031
2032 memset(&params, 0, sizeof(params));
2033
00e96dec 2034 sdata->wmm_acm = 0;
f0706e82
JB		 2035 for (; left >= 4; left -= 4, pos += 4) {
2036 int aci = (pos[0] >> 5) & 0x03;
2037 int acm = (pos[0] >> 4) & 0x01;
ab13315a 2038 bool uapsd = false;
f0706e82
JB		 2039
2040 switch (aci) {
0eeb59fe 2041 case 1: /* AC_BK */
2ed77ea6 2042 ac = IEEE80211_AC_BK;
988c0f72 2043 if (acm)
00e96dec 2044 sdata->wmm_acm |= BIT(1) | BIT(2); /* BK/- */
ab13315a
KV		 2045 if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BK)
2046 uapsd = true;
41cbb0f5
LC		 2047 params[ac].mu_edca = !!mu_edca;
2048 if (mu_edca)
2049 params[ac].mu_edca_param_rec = mu_edca->ac_bk;
f0706e82 2050 break;
0eeb59fe 2051 case 2: /* AC_VI */
2ed77ea6 2052 ac = IEEE80211_AC_VI;
988c0f72 2053 if (acm)
00e96dec 2054 sdata->wmm_acm |= BIT(4) | BIT(5); /* CL/VI */
ab13315a
KV		 2055 if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VI)
2056 uapsd = true;
41cbb0f5
LC		 2057 params[ac].mu_edca = !!mu_edca;
2058 if (mu_edca)
2059 params[ac].mu_edca_param_rec = mu_edca->ac_vi;
f0706e82 2060 break;
0eeb59fe 2061 case 3: /* AC_VO */
2ed77ea6 2062 ac = IEEE80211_AC_VO;
988c0f72 2063 if (acm)
00e96dec 2064 sdata->wmm_acm |= BIT(6) | BIT(7); /* VO/NC */
ab13315a
KV		 2065 if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VO)
2066 uapsd = true;
41cbb0f5
LC		 2067 params[ac].mu_edca = !!mu_edca;
2068 if (mu_edca)
2069 params[ac].mu_edca_param_rec = mu_edca->ac_vo;
f0706e82 2070 break;
0eeb59fe 2071 case 0: /* AC_BE */
f0706e82 2072 default:
2ed77ea6 2073 ac = IEEE80211_AC_BE;
988c0f72 2074 if (acm)
00e96dec 2075 sdata->wmm_acm |= BIT(0) | BIT(3); /* BE/EE */
ab13315a
KV		 2076 if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BE)
2077 uapsd = true;
41cbb0f5
LC		 2078 params[ac].mu_edca = !!mu_edca;
2079 if (mu_edca)
2080 params[ac].mu_edca_param_rec = mu_edca->ac_be;
f0706e82
JB		 2081 break;
2082 }
2083
2ed77ea6 2084 params[ac].aifs = pos[0] & 0x0f;
730a7550 2085
2ed77ea6 2086 if (params[ac].aifs < 2) {
730a7550
EG		 2087 sdata_info(sdata,
2088 "AP has invalid WMM params (AIFSN=%d for ACI %d), will use 2\n",
2ed77ea6
JB		 2089 params[ac].aifs, aci);
2090 params[ac].aifs = 2;
730a7550 2091 }
2ed77ea6
JB		 2092 params[ac].cw_max = ecw2cw((pos[1] & 0xf0) >> 4);
2093 params[ac].cw_min = ecw2cw(pos[1] & 0x0f);
2094 params[ac].txop = get_unaligned_le16(pos + 2);
2095 params[ac].acm = acm;
2096 params[ac].uapsd = uapsd;
ab13315a 2097
911a2648 2098 if (params[ac].cw_min == 0 ||
c470bdc1 2099 params[ac].cw_min > params[ac].cw_max) {
2ed77ea6
JB		 2100 sdata_info(sdata,
2101 "AP has invalid WMM params (CWmin/max=%d/%d for ACI %d), using defaults\n",
2102 params[ac].cw_min, params[ac].cw_max, aci);
2103 return false;
2104 }
e552af05 2105 ieee80211_regulatory_limit_wmm_params(sdata, &params[ac], ac);
2ed77ea6
JB		 2106 }
2107
05aaa5c9
BN		 2108 /* WMM specification requires all 4 ACIs. */
2109 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
2110 if (params[ac].cw_min == 0) {
2111 sdata_info(sdata,
2112 "AP has invalid WMM params (missing AC %d), using defaults\n",
2113 ac);
2114 return false;
2115 }
2116 }
2117
2ed77ea6 2118 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
bdcbd8e0 2119 mlme_dbg(sdata,
2ed77ea6
JB		 2120 "WMM AC=%d acm=%d aifs=%d cWmin=%d cWmax=%d txop=%d uapsd=%d, downgraded=%d\n",
2121 ac, params[ac].acm,
2122 params[ac].aifs, params[ac].cw_min, params[ac].cw_max,
2123 params[ac].txop, params[ac].uapsd,
2124 ifmgd->tx_tspec[ac].downgraded);
2125 sdata->tx_conf[ac] = params[ac];
2126 if (!ifmgd->tx_tspec[ac].downgraded &&
2127 drv_conf_tx(local, sdata, ac, &params[ac]))
bdcbd8e0 2128 sdata_err(sdata,
2ed77ea6
JB		 2129 "failed to set TX queue parameters for AC %d\n",
2130 ac);
f0706e82 2131 }
e1b3ec1a
SG		 2132
2133 /* enable WMM or activate new settings */
4ced3f74 2134 sdata->vif.bss_conf.qos = true;
7d25745d 2135 return true;
f0706e82
JB		 2136}
2137
925e64c3
SG		 2138static void __ieee80211_stop_poll(struct ieee80211_sub_if_data *sdata)
2139{
2140 lockdep_assert_held(&sdata->local->mtx);
2141
392b9ffb 2142 sdata->u.mgd.flags &= ~IEEE80211_STA_CONNECTION_POLL;
925e64c3
SG		 2143 ieee80211_run_deferred_scan(sdata->local);
2144}
2145
2146static void ieee80211_stop_poll(struct ieee80211_sub_if_data *sdata)
2147{
2148 mutex_lock(&sdata->local->mtx);
2149 __ieee80211_stop_poll(sdata);
2150 mutex_unlock(&sdata->local->mtx);
2151}
2152
7a5158ef
JB		 2153static u32 ieee80211_handle_bss_capability(struct ieee80211_sub_if_data *sdata,
2154 u16 capab, bool erp_valid, u8 erp)
5628221c 2155{
bda3933a 2156 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
21a8e9dd 2157 struct ieee80211_supported_band *sband;
471b3efd 2158 u32 changed = 0;
7a5158ef
JB		 2159 bool use_protection;
2160 bool use_short_preamble;
2161 bool use_short_slot;
2162
21a8e9dd
MSS		 2163 sband = ieee80211_get_sband(sdata);
2164 if (!sband)
2165 return changed;
2166
7a5158ef
JB		 2167 if (erp_valid) {
2168 use_protection = (erp & WLAN_ERP_USE_PROTECTION) != 0;
2169 use_short_preamble = (erp & WLAN_ERP_BARKER_PREAMBLE) == 0;
2170 } else {
2171 use_protection = false;
2172 use_short_preamble = !!(capab & WLAN_CAPABILITY_SHORT_PREAMBLE);
2173 }
2174
2175 use_short_slot = !!(capab & WLAN_CAPABILITY_SHORT_SLOT_TIME);
07c12d61
TM		 2176 if (sband->band == NL80211_BAND_5GHZ ||
2177 sband->band == NL80211_BAND_6GHZ)
43d35343 2178 use_short_slot = true;
5628221c 2179
471b3efd 2180 if (use_protection != bss_conf->use_cts_prot) {
471b3efd
JB		 2181 bss_conf->use_cts_prot = use_protection;
2182 changed |= BSS_CHANGED_ERP_CTS_PROT;
5628221c 2183 }
7e9ed188 2184
d43c7b37 2185 if (use_short_preamble != bss_conf->use_short_preamble) {
d43c7b37 2186 bss_conf->use_short_preamble = use_short_preamble;
471b3efd 2187 changed |= BSS_CHANGED_ERP_PREAMBLE;
7e9ed188 2188 }
d9430a32 2189
7a5158ef 2190 if (use_short_slot != bss_conf->use_short_slot) {
7a5158ef
JB		 2191 bss_conf->use_short_slot = use_short_slot;
2192 changed |= BSS_CHANGED_ERP_SLOT;
50c4afb9
JL		 2193 }
2194
2195 return changed;
2196}
2197
f698d856 2198static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata,
0c1ad2ca 2199 struct cfg80211_bss *cbss,
ae5eb026 2200 u32 bss_info_changed)
f0706e82 2201{
0c1ad2ca 2202 struct ieee80211_bss *bss = (void *)cbss->priv;
471b3efd 2203 struct ieee80211_local *local = sdata->local;
68542962 2204 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
d6f2da5b 2205
ae5eb026 2206 bss_info_changed |= BSS_CHANGED_ASSOC;
77fdaa12 2207 bss_info_changed |= ieee80211_handle_bss_capability(sdata,
50ae34a2 2208 bss_conf->assoc_capability, bss->has_erp_value, bss->erp_value);
21c0cbe7 2209
7ccc8bd7 2210 sdata->u.mgd.beacon_timeout = usecs_to_jiffies(ieee80211_tu_to_usec(
59c1ec2b 2211 beacon_loss_count * bss_conf->beacon_int));
7ccc8bd7 2212
0c1ad2ca
JB		 2213 sdata->u.mgd.associated = cbss;
2214 memcpy(sdata->u.mgd.bssid, cbss->bssid, ETH_ALEN);
f0706e82 2215
e8e4f528
JB		 2216 ieee80211_check_rate_mask(sdata);
2217
17e4ec14
JM		 2218 sdata->u.mgd.flags |= IEEE80211_STA_RESET_SIGNAL_AVE;
2219
b115b972
JD		 2220 if (sdata->vif.p2p ||
2221 sdata->vif.driver_flags & IEEE80211_VIF_GET_NOA_UPDATE) {
9caf0364 2222 const struct cfg80211_bss_ies *ies;
488dd7b5 2223
9caf0364
JB		 2224 rcu_read_lock();
2225 ies = rcu_dereference(cbss->ies);
2226 if (ies) {
9caf0364
JB		 2227 int ret;
2228
2229 ret = cfg80211_get_p2p_attr(
2230 ies->data, ies->len,
2231 IEEE80211_P2P_ATTR_ABSENCE_NOTICE,
67baf663
JD		 2232 (u8 *) &bss_conf->p2p_noa_attr,
2233 sizeof(bss_conf->p2p_noa_attr));
9caf0364 2234 if (ret >= 2) {
67baf663
JD		 2235 sdata->u.mgd.p2p_noa_index =
2236 bss_conf->p2p_noa_attr.index;
9caf0364 2237 bss_info_changed |= BSS_CHANGED_P2P_PS;
9caf0364 2238 }
488dd7b5 2239 }
9caf0364 2240 rcu_read_unlock();
488dd7b5
JB		 2241 }
2242
b291ba11 2243 /* just to be sure */
925e64c3 2244 ieee80211_stop_poll(sdata);
b291ba11 2245
9ac19a90 2246 ieee80211_led_assoc(local, 1);
9306102e 2247
989c6505 2248 if (sdata->u.mgd.have_beacon) {
826262c3
JB		 2249 /*
2250 * If the AP is buggy we may get here with no DTIM period
2251 * known, so assume it's 1 which is the only safe assumption
2252 * in that case, although if the TIM IE is broken powersave
2253 * probably just won't work at all.
2254 */
2255 bss_conf->dtim_period = sdata->u.mgd.dtim_period ?: 1;
817cee76 2256 bss_conf->beacon_rate = bss->beacon_rate;
989c6505 2257 bss_info_changed |= BSS_CHANGED_BEACON_INFO;
826262c3 2258 } else {
817cee76 2259 bss_conf->beacon_rate = NULL;
e5b900d2 2260 bss_conf->dtim_period = 0;
826262c3 2261 }
e5b900d2 2262
68542962 2263 bss_conf->assoc = 1;
9cef8737 2264
a97c13c3 2265 /* Tell the driver to monitor connection quality (if supported) */
ea086359 2266 if (sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI &&
68542962 2267 bss_conf->cqm_rssi_thold)
a97c13c3
JO		 2268 bss_info_changed |= BSS_CHANGED_CQM;
2269
68542962 2270 /* Enable ARP filtering */
0f19b41e 2271 if (bss_conf->arp_addr_cnt)
68542962 2272 bss_info_changed |= BSS_CHANGED_ARP_FILTER;
68542962 2273
ae5eb026 2274 ieee80211_bss_info_change_notify(sdata, bss_info_changed);
f0706e82 2275
056508dc 2276 mutex_lock(&local->iflist_mtx);
4a733ef1 2277 ieee80211_recalc_ps(local);
056508dc 2278 mutex_unlock(&local->iflist_mtx);
e0cb686f 2279
04ecd257 2280 ieee80211_recalc_smps(sdata);
ab095877
EP		 2281 ieee80211_recalc_ps_vif(sdata);
2282
9ac19a90 2283 netif_carrier_on(sdata->dev);
f0706e82
JB		 2284}
2285
e69e95db 2286static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata,
37ad3888
JB		 2287 u16 stype, u16 reason, bool tx,
2288 u8 *frame_buf)
aa458d17 2289{
46900298 2290 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
aa458d17 2291 struct ieee80211_local *local = sdata->local;
3cc5240b 2292 u32 changed = 0;
aa458d17 2293
8d61ffa5 2294 sdata_assert_lock(sdata);
77fdaa12 2295
37ad3888
JB		 2296 if (WARN_ON_ONCE(tx && !frame_buf))
2297 return;
2298
b291ba11
JB		 2299 if (WARN_ON(!ifmgd->associated))
2300 return;
2301
79543d8e
DS		 2302 ieee80211_stop_poll(sdata);
2303
77fdaa12 2304 ifmgd->associated = NULL;
aa458d17
TW		 2305 netif_carrier_off(sdata->dev);
2306
88bc40e8
EP		 2307 /*
2308 * if we want to get out of ps before disassoc (why?) we have
2309 * to do it before sending disassoc, as otherwise the null-packet
2310 * won't be valid.
2311 */
2312 if (local->hw.conf.flags & IEEE80211_CONF_PS) {
2313 local->hw.conf.flags &= ~IEEE80211_CONF_PS;
2314 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2315 }
2316 local->ps_sdata = NULL;
2317
ab095877
EP		 2318 /* disable per-vif ps */
2319 ieee80211_recalc_ps_vif(sdata);
2320
14f2ae83
EG		 2321 /* make sure ongoing transmission finishes */
2322 synchronize_net();
2323
3b24f4c6
EG		 2324 /*
2325 * drop any frame before deauth/disassoc, this can be data or
2326 * management frame. Since we are disconnecting, we should not
2327 * insist sending these frames which can take time and delay
2328 * the disconnection and possible the roaming.
2329 */
f823981e 2330 if (tx)
3b24f4c6 2331 ieee80211_flush_queues(local, sdata, true);
f823981e 2332
37ad3888 2333 /* deauthenticate/disassociate now */
94ba9271 2334 if (tx || frame_buf) {
94ba9271
IP		 2335 /*
2336 * In multi channel scenarios guarantee that the virtual
2337 * interface is granted immediate airtime to transmit the
2338 * deauthentication frame by calling mgd_prepare_tx, if the
2339 * driver requested so.
2340 */
2341 if (ieee80211_hw_check(&local->hw, DEAUTH_NEED_MGD_TX_PREP) &&
2342 !ifmgd->have_beacon)
d4e36e55 2343 drv_mgd_prepare_tx(sdata->local, sdata, 0);
94ba9271 2344
4b08d1b6
JB		 2345 ieee80211_send_deauth_disassoc(sdata, ifmgd->bssid,
2346 ifmgd->bssid, stype, reason,
2347 tx, frame_buf);
94ba9271 2348 }
37ad3888 2349
3b24f4c6 2350 /* flush out frame - make sure the deauth was actually sent */
37ad3888 2351 if (tx)
3b24f4c6 2352 ieee80211_flush_queues(local, sdata, false);
37ad3888 2353
88a9e31c 2354 /* clear bssid only after building the needed mgmt frames */
c84a67a2 2355 eth_zero_addr(ifmgd->bssid);
88a9e31c 2356
37ad3888 2357 /* remove AP and TDLS peers */
d34ba216 2358 sta_info_flush(sdata);
37ad3888
JB		 2359
2360 /* finally reset all BSS / config parameters */
f5e5bf25
TW		 2361 changed |= ieee80211_reset_erp_info(sdata);
2362
f5e5bf25 2363 ieee80211_led_assoc(local, 0);
ae5eb026
JB		 2364 changed |= BSS_CHANGED_ASSOC;
2365 sdata->vif.bss_conf.assoc = false;
f5e5bf25 2366
67baf663
JD		 2367 ifmgd->p2p_noa_index = -1;
2368 memset(&sdata->vif.bss_conf.p2p_noa_attr, 0,
2369 sizeof(sdata->vif.bss_conf.p2p_noa_attr));
488dd7b5 2370
dd5ecfea 2371 /* on the next assoc, re-program HT/VHT parameters */
ef96a842
BG		 2372 memset(&ifmgd->ht_capa, 0, sizeof(ifmgd->ht_capa));
2373 memset(&ifmgd->ht_capa_mask, 0, sizeof(ifmgd->ht_capa_mask));
dd5ecfea
JB		 2374 memset(&ifmgd->vht_capa, 0, sizeof(ifmgd->vht_capa));
2375 memset(&ifmgd->vht_capa_mask, 0, sizeof(ifmgd->vht_capa_mask));
23a1f8d4
SS		 2376
2377 /* reset MU-MIMO ownership and group data */
2378 memset(sdata->vif.bss_conf.mu_group.membership, 0,
2379 sizeof(sdata->vif.bss_conf.mu_group.membership));
2380 memset(sdata->vif.bss_conf.mu_group.position, 0,
2381 sizeof(sdata->vif.bss_conf.mu_group.position));
2382 changed |= BSS_CHANGED_MU_GROUPS;
b5a33d52 2383 sdata->vif.mu_mimo_owner = false;
413ad50a 2384
1ea6f9c0 2385 sdata->ap_power_level = IEEE80211_UNSET_POWER_LEVEL;
a8302de9 2386
520eb820
KV		 2387 del_timer_sync(&local->dynamic_ps_timer);
2388 cancel_work_sync(&local->dynamic_ps_enable_work);
2389
68542962 2390 /* Disable ARP filtering */
0f19b41e 2391 if (sdata->vif.bss_conf.arp_addr_cnt)
68542962 2392 changed |= BSS_CHANGED_ARP_FILTER;
68542962 2393
3abead59
JB		 2394 sdata->vif.bss_conf.qos = false;
2395 changed |= BSS_CHANGED_QOS;
2396
0aaffa9b
JB		 2397 /* The BSSID (not really interesting) and HT changed */
2398 changed |= BSS_CHANGED_BSSID | BSS_CHANGED_HT;
ae5eb026 2399 ieee80211_bss_info_change_notify(sdata, changed);
8e268e47 2400
3abead59 2401 /* disassociated - set to defaults now */
cec66283 2402 ieee80211_set_wmm_default(sdata, false, false);
3abead59 2403
b9dcf712
JB		 2404 del_timer_sync(&sdata->u.mgd.conn_mon_timer);
2405 del_timer_sync(&sdata->u.mgd.bcn_mon_timer);
2406 del_timer_sync(&sdata->u.mgd.timer);
2407 del_timer_sync(&sdata->u.mgd.chswitch_timer);
2d9957cc 2408
826262c3 2409 sdata->vif.bss_conf.dtim_period = 0;
817cee76
AB		 2410 sdata->vif.bss_conf.beacon_rate = NULL;
2411
989c6505 2412 ifmgd->have_beacon = false;
826262c3 2413
028e8da0 2414 ifmgd->flags = 0;
34a3740d 2415 mutex_lock(&local->mtx);
028e8da0 2416 ieee80211_vif_release_channel(sdata);
59af6928
MK		 2417
2418 sdata->vif.csa_active = false;
0c21e632 2419 ifmgd->csa_waiting_bcn = false;
f84eaa10 2420 ifmgd->csa_ignored_same_chan = false;
a46992b4
LC		 2421 if (sdata->csa_block_tx) {
2422 ieee80211_wake_vif_queues(local, sdata,
2423 IEEE80211_QUEUE_STOP_REASON_CSA);
2424 sdata->csa_block_tx = false;
2425 }
34a3740d 2426 mutex_unlock(&local->mtx);
2475b1cc 2427
02219b3a
JB		 2428 /* existing TX TSPEC sessions no longer exist */
2429 memset(ifmgd->tx_tspec, 0, sizeof(ifmgd->tx_tspec));
2430 cancel_delayed_work_sync(&ifmgd->tx_tspec_wk);
2431
2475b1cc 2432 sdata->encrypt_headroom = IEEE80211_ENCRYPT_HEADROOM;
aa458d17 2433}
f0706e82 2434
3cf335d5
KV		 2435void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
2436 struct ieee80211_hdr *hdr)
2437{
2438 /*
2439 * We can postpone the mgd.timer whenever receiving unicast frames
2440 * from AP because we know that the connection is working both ways
2441 * at that time. But multicast frames (and hence also beacons) must
2442 * be ignored here, because we need to trigger the timer during
b291ba11
JB		 2443 * data idle periods for sending the periodic probe request to the
2444 * AP we're connected to.
3cf335d5 2445 */
b291ba11
JB		 2446 if (is_multicast_ether_addr(hdr->addr1))
2447 return;
2448
be099e82 2449 ieee80211_sta_reset_conn_monitor(sdata);
3cf335d5 2450}
f0706e82 2451
4e5ff376
FF		 2452static void ieee80211_reset_ap_probe(struct ieee80211_sub_if_data *sdata)
2453{
2454 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
133d40f9 2455 struct ieee80211_local *local = sdata->local;
4e5ff376 2456
133d40f9 2457 mutex_lock(&local->mtx);
392b9ffb
SG		 2458 if (!(ifmgd->flags & IEEE80211_STA_CONNECTION_POLL))
2459 goto out;
4e5ff376 2460
925e64c3 2461 __ieee80211_stop_poll(sdata);
133d40f9
SG		 2462
2463 mutex_lock(&local->iflist_mtx);
4a733ef1 2464 ieee80211_recalc_ps(local);
133d40f9 2465 mutex_unlock(&local->iflist_mtx);
4e5ff376 2466
30686bf7 2467 if (ieee80211_hw_check(&sdata->local->hw, CONNECTION_MONITOR))
133d40f9 2468 goto out;
4e5ff376
FF		 2469
2470 /*
2471 * We've received a probe response, but are not sure whether
2472 * we have or will be receiving any beacons or data, so let's
2473 * schedule the timers again, just in case.
2474 */
2475 ieee80211_sta_reset_beacon_monitor(sdata);
2476
2477 mod_timer(&ifmgd->conn_mon_timer,
2478 round_jiffies_up(jiffies +
2479 IEEE80211_CONNECTION_IDLE_TIME));
133d40f9 2480out:
133d40f9 2481 mutex_unlock(&local->mtx);
4e5ff376
FF		 2482}
2483
02219b3a
JB		 2484static void ieee80211_sta_tx_wmm_ac_notify(struct ieee80211_sub_if_data *sdata,
2485 struct ieee80211_hdr *hdr,
2486 u16 tx_time)
2487{
2488 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
a1f2ba04 2489 u16 tid = ieee80211_get_tid(hdr);
02219b3a
JB		 2490 int ac = ieee80211_ac_from_tid(tid);
2491 struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac];
2492 unsigned long now = jiffies;
2493
2494 if (likely(!tx_tspec->admitted_time))
2495 return;
2496
2497 if (time_after(now, tx_tspec->time_slice_start + HZ)) {
2498 tx_tspec->consumed_tx_time = 0;
2499 tx_tspec->time_slice_start = now;
2500
2501 if (tx_tspec->downgraded) {
2502 tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE;
2503 schedule_delayed_work(&ifmgd->tx_tspec_wk, 0);
2504 }
2505 }
2506
2507 if (tx_tspec->downgraded)
2508 return;
2509
2510 tx_tspec->consumed_tx_time += tx_time;
2511
2512 if (tx_tspec->consumed_tx_time >= tx_tspec->admitted_time) {
2513 tx_tspec->downgraded = true;
2514 tx_tspec->action = TX_TSPEC_ACTION_DOWNGRADE;
2515 schedule_delayed_work(&ifmgd->tx_tspec_wk, 0);
2516 }
2517}
2518
4e5ff376 2519void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
02219b3a 2520 struct ieee80211_hdr *hdr, bool ack, u16 tx_time)
4e5ff376 2521{
02219b3a
JB		 2522 ieee80211_sta_tx_wmm_ac_notify(sdata, hdr, tx_time);
2523
75706d0e 2524 if (!ieee80211_is_data(hdr->frame_control))
4e5ff376
FF		 2525 return;
2526
30b2f0be 2527 if (ieee80211_is_any_nullfunc(hdr->frame_control) &&
4e5ff376 2528 sdata->u.mgd.probe_send_count > 0) {
04ac3c0e 2529 if (ack)
cab1c7fd 2530 ieee80211_sta_reset_conn_monitor(sdata);
04ac3c0e
FF		 2531 else
2532 sdata->u.mgd.nullfunc_failed = true;
4e5ff376 2533 ieee80211_queue_work(&sdata->local->hw, &sdata->work);
cab1c7fd 2534 return;
4e5ff376 2535 }
cab1c7fd
WD		 2536
2537 if (ack)
2538 ieee80211_sta_reset_conn_monitor(sdata);
4e5ff376
FF		 2539}
2540
45ad6834
JB		 2541static void ieee80211_mlme_send_probe_req(struct ieee80211_sub_if_data *sdata,
2542 const u8 *src, const u8 *dst,
2543 const u8 *ssid, size_t ssid_len,
2544 struct ieee80211_channel *channel)
2545{
2546 struct sk_buff *skb;
2547
2548 skb = ieee80211_build_probe_req(sdata, src, dst, (u32)-1, channel,
2549 ssid, ssid_len, NULL, 0,
2550 IEEE80211_PROBE_FLAG_DIRECTED);
2551 if (skb)
2552 ieee80211_tx_skb(sdata, skb);
2553}
2554
a43abf29
ML		 2555static void ieee80211_mgd_probe_ap_send(struct ieee80211_sub_if_data *sdata)
2556{
2557 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2558 const u8 *ssid;
f01a067d 2559 u8 *dst = ifmgd->associated->bssid;
180205bd 2560 u8 unicast_limit = max(1, max_probe_tries - 3);
49ddf8e6 2561 struct sta_info *sta;
f01a067d
LR		 2562
2563 /*
2564 * Try sending broadcast probe requests for the last three
2565 * probe requests after the first ones failed since some
2566 * buggy APs only support broadcast probe requests.
2567 */
2568 if (ifmgd->probe_send_count >= unicast_limit)
2569 dst = NULL;
a43abf29 2570
4e5ff376
FF		 2571 /*
2572 * When the hardware reports an accurate Tx ACK status, it's
2573 * better to send a nullfunc frame instead of a probe request,
2574 * as it will kick us off the AP quickly if we aren't associated
2575 * anymore. The timeout will be reset if the frame is ACKed by
2576 * the AP.
2577 */
992e68bf
SD		 2578 ifmgd->probe_send_count++;
2579
49ddf8e6
JB		 2580 if (dst) {
2581 mutex_lock(&sdata->local->sta_mtx);
2582 sta = sta_info_get(sdata, dst);
2583 if (!WARN_ON(!sta))
2584 ieee80211_check_fast_rx(sta);
2585 mutex_unlock(&sdata->local->sta_mtx);
2586 }
2587
30686bf7 2588 if (ieee80211_hw_check(&sdata->local->hw, REPORTS_TX_ACK_STATUS)) {
04ac3c0e 2589 ifmgd->nullfunc_failed = false;
f39b07fd
SB		 2590 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HE))
2591 ifmgd->probe_send_count--;
2592 else
2593 ieee80211_send_nullfunc(sdata->local, sdata, false);
04ac3c0e 2594 } else {
88c868c4
SG		 2595 int ssid_len;
2596
9caf0364 2597 rcu_read_lock();
4e5ff376 2598 ssid = ieee80211_bss_get_ie(ifmgd->associated, WLAN_EID_SSID);
88c868c4
SG		 2599 if (WARN_ON_ONCE(ssid == NULL))
2600 ssid_len = 0;
2601 else
2602 ssid_len = ssid[1];
2603
45ad6834
JB		 2604 ieee80211_mlme_send_probe_req(sdata, sdata->vif.addr, dst,
2605 ssid + 2, ssid_len,
2606 ifmgd->associated->channel);
9caf0364 2607 rcu_read_unlock();
4e5ff376 2608 }
a43abf29 2609
180205bd 2610 ifmgd->probe_timeout = jiffies + msecs_to_jiffies(probe_wait_ms);
8d61ffa5 2611 run_again(sdata, ifmgd->probe_timeout);
a43abf29
ML		 2612}
2613
b291ba11
JB		 2614static void ieee80211_mgd_probe_ap(struct ieee80211_sub_if_data *sdata,
2615 bool beacon)
04de8381 2616{
04de8381 2617 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
b291ba11 2618 bool already = false;
34bfc411 2619
9607e6b6 2620 if (!ieee80211_sdata_running(sdata))
0e2b6286
JB		 2621 return;
2622
8d61ffa5 2623 sdata_lock(sdata);
77fdaa12
JB		 2624
2625 if (!ifmgd->associated)
2626 goto out;
2627
133d40f9
SG		 2628 mutex_lock(&sdata->local->mtx);
2629
2630 if (sdata->local->tmp_channel || sdata->local->scanning) {
2631 mutex_unlock(&sdata->local->mtx);
2632 goto out;
2633 }
2634
a13fbe54 2635 if (beacon) {
bdcbd8e0 2636 mlme_dbg_ratelimited(sdata,
59c1ec2b
BG		 2637 "detected beacon loss from AP (missed %d beacons) - probing\n",
2638 beacon_loss_count);
bdcbd8e0 2639
98f03342 2640 ieee80211_cqm_beacon_loss_notify(&sdata->vif, GFP_KERNEL);
a13fbe54 2641 }
04de8381 2642
b291ba11
JB		 2643 /*
2644 * The driver/our work has already reported this event or the
2645 * connection monitoring has kicked in and we have already sent
2646 * a probe request. Or maybe the AP died and the driver keeps
2647 * reporting until we disassociate...
2648 *
2649 * In either case we have to ignore the current call to this
2650 * function (except for setting the correct probe reason bit)
2651 * because otherwise we would reset the timer every time and
2652 * never check whether we received a probe response!
2653 */
392b9ffb 2654 if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL)
b291ba11
JB		 2655 already = true;
2656
12b5f34d
EP		 2657 ifmgd->flags |= IEEE80211_STA_CONNECTION_POLL;
2658
133d40f9
SG		 2659 mutex_unlock(&sdata->local->mtx);
2660
b291ba11
JB		 2661 if (already)
2662 goto out;
2663
4e751843 2664 mutex_lock(&sdata->local->iflist_mtx);
4a733ef1 2665 ieee80211_recalc_ps(sdata->local);
4e751843
JB		 2666 mutex_unlock(&sdata->local->iflist_mtx);
2667
a43abf29
ML		 2668 ifmgd->probe_send_count = 0;
2669 ieee80211_mgd_probe_ap_send(sdata);
77fdaa12 2670 out:
8d61ffa5 2671 sdata_unlock(sdata);
04de8381
KV		 2672}
2673
a619a4c0
JO		 2674struct sk_buff *ieee80211_ap_probereq_get(struct ieee80211_hw *hw,
2675 struct ieee80211_vif *vif)
2676{
2677 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2678 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
d9b3b28b 2679 struct cfg80211_bss *cbss;
a619a4c0
JO		 2680 struct sk_buff *skb;
2681 const u8 *ssid;
88c868c4 2682 int ssid_len;
a619a4c0
JO		 2683
2684 if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
2685 return NULL;
2686
8d61ffa5 2687 sdata_assert_lock(sdata);
a619a4c0 2688
d9b3b28b
EP		 2689 if (ifmgd->associated)
2690 cbss = ifmgd->associated;
2691 else if (ifmgd->auth_data)
2692 cbss = ifmgd->auth_data->bss;
2693 else if (ifmgd->assoc_data)
2694 cbss = ifmgd->assoc_data->bss;
2695 else
a619a4c0
JO		 2696 return NULL;
2697
9caf0364 2698 rcu_read_lock();
d9b3b28b 2699 ssid = ieee80211_bss_get_ie(cbss, WLAN_EID_SSID);
4152561f
WD		 2700 if (WARN_ONCE(!ssid || ssid[1] > IEEE80211_MAX_SSID_LEN,
2701 "invalid SSID element (len=%d)", ssid ? ssid[1] : -1))
88c868c4
SG		 2702 ssid_len = 0;
2703 else
2704 ssid_len = ssid[1];
2705
a344d677 2706 skb = ieee80211_build_probe_req(sdata, sdata->vif.addr, cbss->bssid,
55de908a 2707 (u32) -1, cbss->channel,
6b77863b 2708 ssid + 2, ssid_len,
00387f32 2709 NULL, 0, IEEE80211_PROBE_FLAG_DIRECTED);
9caf0364 2710 rcu_read_unlock();
a619a4c0
JO		 2711
2712 return skb;
2713}
2714EXPORT_SYMBOL(ieee80211_ap_probereq_get);
2715
a90faa9d
EG		 2716static void ieee80211_report_disconnect(struct ieee80211_sub_if_data *sdata,
2717 const u8 *buf, size_t len, bool tx,
2718 u16 reason)
2719{
2720 struct ieee80211_event event = {
2721 .type = MLME_EVENT,
2722 .u.mlme.data = tx ? DEAUTH_TX_EVENT : DEAUTH_RX_EVENT,
2723 .u.mlme.reason = reason,
2724 };
2725
2726 if (tx)
2727 cfg80211_tx_mlme_mgmt(sdata->dev, buf, len);
2728 else
2729 cfg80211_rx_mlme_mgmt(sdata->dev, buf, len);
2730
2731 drv_event_callback(sdata->local, sdata, &event);
2732}
2733
eef9e54c 2734static void __ieee80211_disconnect(struct ieee80211_sub_if_data *sdata)
1e4dcd01 2735{
59af6928 2736 struct ieee80211_local *local = sdata->local;
1e4dcd01 2737 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
6ae16775 2738 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
6c18b27d 2739 bool tx;
1e4dcd01 2740
8d61ffa5 2741 sdata_lock(sdata);
1e4dcd01 2742 if (!ifmgd->associated) {
8d61ffa5 2743 sdata_unlock(sdata);
1e4dcd01
JO		 2744 return;
2745 }
2746
6c18b27d
EG		 2747 tx = !sdata->csa_block_tx;
2748
20eb7ea9
DS		 2749 /* AP is probably out of range (or not reachable for another reason) so
2750 * remove the bss struct for that AP.
2751 */
2752 cfg80211_unlink_bss(local->hw.wiphy, ifmgd->associated);
2753
37ad3888
JB		 2754 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
2755 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY,
6c18b27d 2756 tx, frame_buf);
59af6928 2757 mutex_lock(&local->mtx);
7578d575 2758 sdata->vif.csa_active = false;
0c21e632 2759 ifmgd->csa_waiting_bcn = false;
a46992b4
LC		 2760 if (sdata->csa_block_tx) {
2761 ieee80211_wake_vif_queues(local, sdata,
2762 IEEE80211_QUEUE_STOP_REASON_CSA);
2763 sdata->csa_block_tx = false;
2764 }
59af6928 2765 mutex_unlock(&local->mtx);
7da7cc1d 2766
6c18b27d 2767 ieee80211_report_disconnect(sdata, frame_buf, sizeof(frame_buf), tx,
a90faa9d
EG		 2768 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY);
2769
8d61ffa5 2770 sdata_unlock(sdata);
1e4dcd01
JO		 2771}
2772
cc74c0c7 2773static void ieee80211_beacon_connection_loss_work(struct work_struct *work)
b291ba11
JB		 2774{
2775 struct ieee80211_sub_if_data *sdata =
2776 container_of(work, struct ieee80211_sub_if_data,
1e4dcd01 2777 u.mgd.beacon_connection_loss_work);
a85e1d55 2778 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
a85e1d55 2779
976bd9ef
JB		 2780 if (ifmgd->associated)
2781 ifmgd->beacon_loss_count++;
b291ba11 2782
682bd38b 2783 if (ifmgd->connection_loss) {
882a7c69
JB		 2784 sdata_info(sdata, "Connection to AP %pM lost\n",
2785 ifmgd->bssid);
eef9e54c 2786 __ieee80211_disconnect(sdata);
882a7c69 2787 } else {
1e4dcd01 2788 ieee80211_mgd_probe_ap(sdata, true);
882a7c69
JB		 2789 }
2790}
2791
2792static void ieee80211_csa_connection_drop_work(struct work_struct *work)
2793{
2794 struct ieee80211_sub_if_data *sdata =
2795 container_of(work, struct ieee80211_sub_if_data,
2796 u.mgd.csa_connection_drop_work);
2797
eef9e54c 2798 __ieee80211_disconnect(sdata);
b291ba11
JB		 2799}
2800
04de8381
KV		 2801void ieee80211_beacon_loss(struct ieee80211_vif *vif)
2802{
2803 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
1e4dcd01 2804 struct ieee80211_hw *hw = &sdata->local->hw;
04de8381 2805
b5878a2d
JB		 2806 trace_api_beacon_loss(sdata);
2807
682bd38b 2808 sdata->u.mgd.connection_loss = false;
1e4dcd01 2809 ieee80211_queue_work(hw, &sdata->u.mgd.beacon_connection_loss_work);
04de8381
KV		 2810}
2811EXPORT_SYMBOL(ieee80211_beacon_loss);
2812
1e4dcd01
JO		 2813void ieee80211_connection_loss(struct ieee80211_vif *vif)
2814{
2815 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2816 struct ieee80211_hw *hw = &sdata->local->hw;
2817
b5878a2d
JB		 2818 trace_api_connection_loss(sdata);
2819
682bd38b 2820 sdata->u.mgd.connection_loss = true;
1e4dcd01
JO		 2821 ieee80211_queue_work(hw, &sdata->u.mgd.beacon_connection_loss_work);
2822}
2823EXPORT_SYMBOL(ieee80211_connection_loss);
2824
2825
66e67e41
JB		 2826static void ieee80211_destroy_auth_data(struct ieee80211_sub_if_data *sdata,
2827 bool assoc)
2828{
2829 struct ieee80211_mgd_auth_data *auth_data = sdata->u.mgd.auth_data;
2830
8d61ffa5 2831 sdata_assert_lock(sdata);
66e67e41 2832
66e67e41 2833 if (!assoc) {
c1e140bf
EG		 2834 /*
2835 * we are not authenticated yet, the only timer that could be
2836 * running is the timeout for the authentication response which
2837 * which is not relevant anymore.
2838 */
2839 del_timer_sync(&sdata->u.mgd.timer);
66e67e41
JB		 2840 sta_info_destroy_addr(sdata, auth_data->bss->bssid);
2841
c84a67a2 2842 eth_zero_addr(sdata->u.mgd.bssid);
66e67e41 2843 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID);
028e8da0 2844 sdata->u.mgd.flags = 0;
34a3740d 2845 mutex_lock(&sdata->local->mtx);
55de908a 2846 ieee80211_vif_release_channel(sdata);
34a3740d 2847 mutex_unlock(&sdata->local->mtx);
66e67e41
JB		 2848 }
2849
5b112d3d 2850 cfg80211_put_bss(sdata->local->hw.wiphy, auth_data->bss);
66e67e41
JB		 2851 kfree(auth_data);
2852 sdata->u.mgd.auth_data = NULL;
2853}
2854
c9c99f89 2855static void ieee80211_destroy_assoc_data(struct ieee80211_sub_if_data *sdata,
e6f462df 2856 bool assoc, bool abandon)
c9c99f89
JB		 2857{
2858 struct ieee80211_mgd_assoc_data *assoc_data = sdata->u.mgd.assoc_data;
2859
2860 sdata_assert_lock(sdata);
2861
2862 if (!assoc) {
2863 /*
2864 * we are not associated yet, the only timer that could be
2865 * running is the timeout for the association response which
2866 * which is not relevant anymore.
2867 */
2868 del_timer_sync(&sdata->u.mgd.timer);
2869 sta_info_destroy_addr(sdata, assoc_data->bss->bssid);
2870
2871 eth_zero_addr(sdata->u.mgd.bssid);
2872 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID);
2873 sdata->u.mgd.flags = 0;
b5a33d52
SS		 2874 sdata->vif.mu_mimo_owner = false;
2875
c9c99f89
JB		 2876 mutex_lock(&sdata->local->mtx);
2877 ieee80211_vif_release_channel(sdata);
2878 mutex_unlock(&sdata->local->mtx);
e6f462df
JB		 2879
2880 if (abandon)
2881 cfg80211_abandon_assoc(sdata->dev, assoc_data->bss);
c9c99f89
JB		 2882 }
2883
2884 kfree(assoc_data);
2885 sdata->u.mgd.assoc_data = NULL;
2886}
2887
66e67e41
JB		 2888static void ieee80211_auth_challenge(struct ieee80211_sub_if_data *sdata,
2889 struct ieee80211_mgmt *mgmt, size_t len)
2890{
1672c0e3 2891 struct ieee80211_local *local = sdata->local;
66e67e41
JB		 2892 struct ieee80211_mgd_auth_data *auth_data = sdata->u.mgd.auth_data;
2893 u8 *pos;
2894 struct ieee802_11_elems elems;
1672c0e3 2895 u32 tx_flags = 0;
66e67e41
JB		 2896
2897 pos = mgmt->u.auth.variable;
4abb52a4
SS		 2898 ieee802_11_parse_elems(pos, len - (pos - (u8 *)mgmt), false, &elems,
2899 mgmt->bssid, auth_data->bss->bssid);
66e67e41
JB		 2900 if (!elems.challenge)
2901 return;
2902 auth_data->expected_transaction = 4;
d4e36e55 2903 drv_mgd_prepare_tx(sdata->local, sdata, 0);
30686bf7 2904 if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS))
1672c0e3
JB		 2905 tx_flags = IEEE80211_TX_CTL_REQ_TX_STATUS |
2906 IEEE80211_TX_INTFL_MLME_CONN_TX;
700e8ea6 2907 ieee80211_send_auth(sdata, 3, auth_data->algorithm, 0,
66e67e41
JB		 2908 elems.challenge - 2, elems.challenge_len + 2,
2909 auth_data->bss->bssid, auth_data->bss->bssid,
2910 auth_data->key, auth_data->key_len,
1672c0e3 2911 auth_data->key_idx, tx_flags);
66e67e41
JB		 2912}
2913
fc107a93
JM		 2914static bool ieee80211_mark_sta_auth(struct ieee80211_sub_if_data *sdata,
2915 const u8 *bssid)
2916{
efb543e6 2917 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
fc107a93 2918 struct sta_info *sta;
33483a6b 2919 bool result = true;
fc107a93 2920
efb543e6
JM		 2921 sdata_info(sdata, "authenticated\n");
2922 ifmgd->auth_data->done = true;
2923 ifmgd->auth_data->timeout = jiffies + IEEE80211_AUTH_WAIT_ASSOC;
2924 ifmgd->auth_data->timeout_started = true;
2925 run_again(sdata, ifmgd->auth_data->timeout);
2926
fc107a93
JM		 2927 /* move station state to auth */
2928 mutex_lock(&sdata->local->sta_mtx);
2929 sta = sta_info_get(sdata, bssid);
2930 if (!sta) {
2931 WARN_ONCE(1, "%s: STA %pM not found", sdata->name, bssid);
33483a6b
WY		 2932 result = false;
2933 goto out;
fc107a93
JM		 2934 }
2935 if (sta_info_move_state(sta, IEEE80211_STA_AUTH)) {
2936 sdata_info(sdata, "failed moving %pM to auth\n", bssid);
33483a6b
WY		 2937 result = false;
2938 goto out;
fc107a93 2939 }
fc107a93 2940
33483a6b
WY		 2941out:
2942 mutex_unlock(&sdata->local->sta_mtx);
2943 return result;
fc107a93
JM		 2944}
2945
8d61ffa5
JB		 2946static void ieee80211_rx_mgmt_auth(struct ieee80211_sub_if_data *sdata,
2947 struct ieee80211_mgmt *mgmt, size_t len)
66e67e41
JB		 2948{
2949 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2950 u8 bssid[ETH_ALEN];
2951 u16 auth_alg, auth_transaction, status_code;
a9409093
EG		 2952 struct ieee80211_event event = {
2953 .type = MLME_EVENT,
2954 .u.mlme.data = AUTH_EVENT,
2955 };
66e67e41 2956
8d61ffa5 2957 sdata_assert_lock(sdata);
66e67e41
JB		 2958
2959 if (len < 24 + 6)
8d61ffa5 2960 return;
66e67e41
JB		 2961
2962 if (!ifmgd->auth_data || ifmgd->auth_data->done)
8d61ffa5 2963 return;
66e67e41
JB		 2964
2965 memcpy(bssid, ifmgd->auth_data->bss->bssid, ETH_ALEN);
2966
b203ca39 2967 if (!ether_addr_equal(bssid, mgmt->bssid))
8d61ffa5 2968 return;
66e67e41
JB		 2969
2970 auth_alg = le16_to_cpu(mgmt->u.auth.auth_alg);
2971 auth_transaction = le16_to_cpu(mgmt->u.auth.auth_transaction);
2972 status_code = le16_to_cpu(mgmt->u.auth.status_code);
2973
2974 if (auth_alg != ifmgd->auth_data->algorithm ||
efb543e6
JM		 2975 (auth_alg != WLAN_AUTH_SAE &&
2976 auth_transaction != ifmgd->auth_data->expected_transaction) ||
2977 (auth_alg == WLAN_AUTH_SAE &&
2978 (auth_transaction < ifmgd->auth_data->expected_transaction ||
2979 auth_transaction > 2))) {
0f4126e8
JM		 2980 sdata_info(sdata, "%pM unexpected authentication state: alg %d (expected %d) transact %d (expected %d)\n",
2981 mgmt->sa, auth_alg, ifmgd->auth_data->algorithm,
2982 auth_transaction,
2983 ifmgd->auth_data->expected_transaction);
8d61ffa5 2984 return;
0f4126e8 2985 }
66e67e41
JB		 2986
2987 if (status_code != WLAN_STATUS_SUCCESS) {
a4055e74
AO		 2988 cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len);
2989
2990 if (auth_alg == WLAN_AUTH_SAE &&
4e56cde1
JM		 2991 (status_code == WLAN_STATUS_ANTI_CLOG_REQUIRED ||
2992 (auth_transaction == 1 &&
2993 (status_code == WLAN_STATUS_SAE_HASH_TO_ELEMENT ||
2994 status_code == WLAN_STATUS_SAE_PK))))
a4055e74
AO		 2995 return;
2996
bdcbd8e0
JB		 2997 sdata_info(sdata, "%pM denied authentication (status %d)\n",
2998 mgmt->sa, status_code);
dac211ec 2999 ieee80211_destroy_auth_data(sdata, false);
a9409093
EG		 3000 event.u.mlme.status = MLME_DENIED;
3001 event.u.mlme.reason = status_code;
3002 drv_event_callback(sdata->local, sdata, &event);
8d61ffa5 3003 return;
66e67e41
JB		 3004 }
3005
3006 switch (ifmgd->auth_data->algorithm) {
3007 case WLAN_AUTH_OPEN:
3008 case WLAN_AUTH_LEAP:
3009 case WLAN_AUTH_FT:
6b8ece3a 3010 case WLAN_AUTH_SAE:
dbc0c2cb
JM		 3011 case WLAN_AUTH_FILS_SK:
3012 case WLAN_AUTH_FILS_SK_PFS:
3013 case WLAN_AUTH_FILS_PK:
66e67e41
JB		 3014 break;
3015 case WLAN_AUTH_SHARED_KEY:
3016 if (ifmgd->auth_data->expected_transaction != 4) {
3017 ieee80211_auth_challenge(sdata, mgmt, len);
3018 /* need another frame */
8d61ffa5 3019 return;
66e67e41
JB		 3020 }
3021 break;
3022 default:
3023 WARN_ONCE(1, "invalid auth alg %d",
3024 ifmgd->auth_data->algorithm);
8d61ffa5 3025 return;
66e67e41
JB		 3026 }
3027
a9409093
EG		 3028 event.u.mlme.status = MLME_SUCCESS;
3029 drv_event_callback(sdata->local, sdata, &event);
efb543e6
JM		 3030 if (ifmgd->auth_data->algorithm != WLAN_AUTH_SAE ||
3031 (auth_transaction == 2 &&
3032 ifmgd->auth_data->expected_transaction == 2)) {
3033 if (!ieee80211_mark_sta_auth(sdata, bssid))
0daa63ed 3034 return; /* ignore frame -- wait for timeout */
efb543e6
JM		 3035 } else if (ifmgd->auth_data->algorithm == WLAN_AUTH_SAE &&
3036 auth_transaction == 2) {
3037 sdata_info(sdata, "SAE peer confirmed\n");
3038 ifmgd->auth_data->peer_confirmed = true;
6b8ece3a
JM		 3039 }
3040
6ff57cf8 3041 cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len);
66e67e41
JB		 3042}
3043
dfa1ad29
CO		 3044#define case_WLAN(type) \
3045 case WLAN_REASON_##type: return #type
3046
79c92ca4 3047const char *ieee80211_get_reason_code_string(u16 reason_code)
dfa1ad29
CO		 3048{
3049 switch (reason_code) {
3050 case_WLAN(UNSPECIFIED);
3051 case_WLAN(PREV_AUTH_NOT_VALID);
3052 case_WLAN(DEAUTH_LEAVING);
3053 case_WLAN(DISASSOC_DUE_TO_INACTIVITY);
3054 case_WLAN(DISASSOC_AP_BUSY);
3055 case_WLAN(CLASS2_FRAME_FROM_NONAUTH_STA);
3056 case_WLAN(CLASS3_FRAME_FROM_NONASSOC_STA);
3057 case_WLAN(DISASSOC_STA_HAS_LEFT);
3058 case_WLAN(STA_REQ_ASSOC_WITHOUT_AUTH);
3059 case_WLAN(DISASSOC_BAD_POWER);
3060 case_WLAN(DISASSOC_BAD_SUPP_CHAN);
3061 case_WLAN(INVALID_IE);
3062 case_WLAN(MIC_FAILURE);
3063 case_WLAN(4WAY_HANDSHAKE_TIMEOUT);
3064 case_WLAN(GROUP_KEY_HANDSHAKE_TIMEOUT);
3065 case_WLAN(IE_DIFFERENT);
3066 case_WLAN(INVALID_GROUP_CIPHER);
3067 case_WLAN(INVALID_PAIRWISE_CIPHER);
3068 case_WLAN(INVALID_AKMP);
3069 case_WLAN(UNSUPP_RSN_VERSION);
3070 case_WLAN(INVALID_RSN_IE_CAP);
3071 case_WLAN(IEEE8021X_FAILED);
3072 case_WLAN(CIPHER_SUITE_REJECTED);
3073 case_WLAN(DISASSOC_UNSPECIFIED_QOS);
3074 case_WLAN(DISASSOC_QAP_NO_BANDWIDTH);
3075 case_WLAN(DISASSOC_LOW_ACK);
3076 case_WLAN(DISASSOC_QAP_EXCEED_TXOP);
3077 case_WLAN(QSTA_LEAVE_QBSS);
3078 case_WLAN(QSTA_NOT_USE);
3079 case_WLAN(QSTA_REQUIRE_SETUP);
3080 case_WLAN(QSTA_TIMEOUT);
3081 case_WLAN(QSTA_CIPHER_NOT_SUPP);
3082 case_WLAN(MESH_PEER_CANCELED);
3083 case_WLAN(MESH_MAX_PEERS);
3084 case_WLAN(MESH_CONFIG);
3085 case_WLAN(MESH_CLOSE);
3086 case_WLAN(MESH_MAX_RETRIES);
3087 case_WLAN(MESH_CONFIRM_TIMEOUT);
3088 case_WLAN(MESH_INVALID_GTK);
3089 case_WLAN(MESH_INCONSISTENT_PARAM);
3090 case_WLAN(MESH_INVALID_SECURITY);
3091 case_WLAN(MESH_PATH_ERROR);
3092 case_WLAN(MESH_PATH_NOFORWARD);
3093 case_WLAN(MESH_PATH_DEST_UNREACHABLE);
3094 case_WLAN(MAC_EXISTS_IN_MBSS);
3095 case_WLAN(MESH_CHAN_REGULATORY);
3096 case_WLAN(MESH_CHAN);
3097 default: return "<unknown>";
3098 }
3099}
66e67e41 3100
8d61ffa5
JB		 3101static void ieee80211_rx_mgmt_deauth(struct ieee80211_sub_if_data *sdata,
3102 struct ieee80211_mgmt *mgmt, size_t len)
f0706e82 3103{
46900298 3104 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
c9c99f89 3105 u16 reason_code = le16_to_cpu(mgmt->u.deauth.reason_code);
f0706e82 3106
8d61ffa5 3107 sdata_assert_lock(sdata);
66e67e41 3108
f4ea83dd 3109 if (len < 24 + 2)
8d61ffa5 3110 return;
f0706e82 3111
79c92ca4
YW		 3112 if (!ether_addr_equal(mgmt->bssid, mgmt->sa)) {
3113 ieee80211_tdls_handle_disconnect(sdata, mgmt->sa, reason_code);
3114 return;
3115 }
3116
c9c99f89
JB		 3117 if (ifmgd->associated &&
3118 ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid)) {
3119 const u8 *bssid = ifmgd->associated->bssid;
77fdaa12 3120
c9c99f89
JB		 3121 sdata_info(sdata, "deauthenticated from %pM (Reason: %u=%s)\n",
3122 bssid, reason_code,
3123 ieee80211_get_reason_code_string(reason_code));
f0706e82 3124
c9c99f89 3125 ieee80211_set_disassoc(sdata, 0, 0, false, NULL);
f0706e82 3126
c9c99f89
JB		 3127 ieee80211_report_disconnect(sdata, (u8 *)mgmt, len, false,
3128 reason_code);
3129 return;
3130 }
77fdaa12 3131
c9c99f89
JB		 3132 if (ifmgd->assoc_data &&
3133 ether_addr_equal(mgmt->bssid, ifmgd->assoc_data->bss->bssid)) {
3134 const u8 *bssid = ifmgd->assoc_data->bss->bssid;
37ad3888 3135
c9c99f89
JB		 3136 sdata_info(sdata,
3137 "deauthenticated from %pM while associating (Reason: %u=%s)\n",
3138 bssid, reason_code,
3139 ieee80211_get_reason_code_string(reason_code));
3140
e6f462df 3141 ieee80211_destroy_assoc_data(sdata, false, true);
c9c99f89
JB		 3142
3143 cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len);
3144 return;
3145 }
f0706e82
JB		 3146}
3147
3148
8d61ffa5
JB		 3149static void ieee80211_rx_mgmt_disassoc(struct ieee80211_sub_if_data *sdata,
3150 struct ieee80211_mgmt *mgmt, size_t len)
f0706e82 3151{
46900298 3152 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
f0706e82
JB		 3153 u16 reason_code;
3154
8d61ffa5 3155 sdata_assert_lock(sdata);
77fdaa12 3156
66e67e41 3157 if (len < 24 + 2)
8d61ffa5 3158 return;
77fdaa12 3159
66e67e41 3160 if (!ifmgd->associated ||
b203ca39 3161 !ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid))
8d61ffa5 3162 return;
f0706e82
JB		 3163
3164 reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code);
3165
79c92ca4
YW		 3166 if (!ether_addr_equal(mgmt->bssid, mgmt->sa)) {
3167 ieee80211_tdls_handle_disconnect(sdata, mgmt->sa, reason_code);
3168 return;
3169 }
3170
68506e9a
AM		 3171 sdata_info(sdata, "disassociated from %pM (Reason: %u=%s)\n",
3172 mgmt->sa, reason_code,
3173 ieee80211_get_reason_code_string(reason_code));
f0706e82 3174
37ad3888
JB		 3175 ieee80211_set_disassoc(sdata, 0, 0, false, NULL);
3176
a90faa9d 3177 ieee80211_report_disconnect(sdata, (u8 *)mgmt, len, false, reason_code);
f0706e82
JB		 3178}
3179
c74d084f
CL		 3180static void ieee80211_get_rates(struct ieee80211_supported_band *sband,
3181 u8 *supp_rates, unsigned int supp_rates_len,
3182 u32 *rates, u32 *basic_rates,
3183 bool *have_higher_than_11mbit,
2103dec1 3184 int *min_rate, int *min_rate_index,
44f6d42c 3185 int shift)
c74d084f
CL		 3186{
3187 int i, j;
3188
3189 for (i = 0; i < supp_rates_len; i++) {
2103dec1 3190 int rate = supp_rates[i] & 0x7f;
c74d084f
CL		 3191 bool is_basic = !!(supp_rates[i] & 0x80);
3192
2103dec1 3193 if ((rate * 5 * (1 << shift)) > 110)
c74d084f
CL		 3194 *have_higher_than_11mbit = true;
3195
3196 /*
4826e721
IP		 3197 * Skip HT, VHT and HE BSS membership selectors since they're
3198 * not rates.
c74d084f 3199 *
a6289d3f 3200 * Note: Even though the membership selector and the basic
c74d084f
CL		 3201 * rate flag share the same bit, they are not exactly
3202 * the same.
3203 */
a6289d3f 3204 if (supp_rates[i] == (0x80 | BSS_MEMBERSHIP_SELECTOR_HT_PHY) ||
4826e721
IP		 3205 supp_rates[i] == (0x80 | BSS_MEMBERSHIP_SELECTOR_VHT_PHY) ||
3206 supp_rates[i] == (0x80 | BSS_MEMBERSHIP_SELECTOR_HE_PHY))
c74d084f
CL		 3207 continue;
3208
3209 for (j = 0; j < sband->n_bitrates; j++) {
2103dec1
SW		 3210 struct ieee80211_rate *br;
3211 int brate;
3212
3213 br = &sband->bitrates[j];
2103dec1
SW		 3214
3215 brate = DIV_ROUND_UP(br->bitrate, (1 << shift) * 5);
3216 if (brate == rate) {
c74d084f
CL		 3217 *rates |= BIT(j);
3218 if (is_basic)
3219 *basic_rates |= BIT(j);
2103dec1
SW		 3220 if ((rate * 5) < *min_rate) {
3221 *min_rate = rate * 5;
c74d084f
CL		 3222 *min_rate_index = j;
3223 }
3224 break;
3225 }
3226 }
3227 }
3228}
f0706e82 3229
55ebd6e6
EG		 3230static bool ieee80211_twt_req_supported(const struct sta_info *sta,
3231 const struct ieee802_11_elems *elems)
3232{
3233 if (elems->ext_capab_len < 10)
3234 return false;
3235
3236 if (!(elems->ext_capab[9] & WLAN_EXT_CAPA10_TWT_RESPONDER_SUPPORT))
3237 return false;
3238
3239 return sta->sta.he_cap.he_cap_elem.mac_cap_info[0] &
3240 IEEE80211_HE_MAC_CAP0_TWT_RES;
3241}
3242
c9d3245e
JC		 3243static int ieee80211_recalc_twt_req(struct ieee80211_sub_if_data *sdata,
3244 struct sta_info *sta,
3245 struct ieee802_11_elems *elems)
3246{
3247 bool twt = ieee80211_twt_req_supported(sta, elems);
3248
3249 if (sdata->vif.bss_conf.twt_requester != twt) {
3250 sdata->vif.bss_conf.twt_requester = twt;
3251 return BSS_CHANGED_TWT;
3252 }
3253 return 0;
3254}
3255
66e67e41
JB		 3256static bool ieee80211_assoc_success(struct ieee80211_sub_if_data *sdata,
3257 struct cfg80211_bss *cbss,
f61d7884
JB		 3258 struct ieee80211_mgmt *mgmt, size_t len,
3259 struct ieee802_11_elems *elems)
f0706e82 3260{
46900298 3261 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
471b3efd 3262 struct ieee80211_local *local = sdata->local;
8318d78a 3263 struct ieee80211_supported_band *sband;
f0706e82 3264 struct sta_info *sta;
af6b6374 3265 u16 capab_info, aid;
bda3933a 3266 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
35d865af
JB		 3267 const struct cfg80211_bss_ies *bss_ies = NULL;
3268 struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data;
57fa5e85 3269 bool is_6ghz = cbss->channel->band == NL80211_BAND_6GHZ;
ae5eb026 3270 u32 changed = 0;
c74d084f 3271 int err;
35d865af 3272 bool ret;
f0706e82 3273
af6b6374 3274 /* AssocResp and ReassocResp have identical structure */
f0706e82 3275
f0706e82 3276 aid = le16_to_cpu(mgmt->u.assoc_resp.aid);
af6b6374 3277 capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info);
f0706e82 3278
c7c477b5
JB		 3279 /*
3280 * The 5 MSB of the AID field are reserved
3281 * (802.11-2016 9.4.1.8 AID field)
3282 */
3283 aid &= 0x7ff;
1dd84aa2 3284
05cb9108
JB		 3285 ifmgd->broken_ap = false;
3286
3287 if (aid == 0 || aid > IEEE80211_MAX_AID) {
bdcbd8e0
JB		 3288 sdata_info(sdata, "invalid AID value %d (out of range), turn off PS\n",
3289 aid);
05cb9108
JB		 3290 aid = 0;
3291 ifmgd->broken_ap = true;
3292 }
3293
f61d7884 3294 if (!elems->supp_rates) {
bdcbd8e0 3295 sdata_info(sdata, "no SuppRates element in AssocResp\n");
af6b6374 3296 return false;
f0706e82
JB		 3297 }
3298
1db364c8 3299 sdata->vif.bss_conf.aid = aid;
9041c1fa 3300 ifmgd->tdls_chan_switch_prohibited =
f61d7884
JB		 3301 elems->ext_capab && elems->ext_capab_len >= 5 &&
3302 (elems->ext_capab[4] & WLAN_EXT_CAPA5_TDLS_CH_SW_PROHIBITED);
f0706e82 3303
35d865af
JB		 3304 /*
3305 * Some APs are erroneously not including some information in their
3306 * (re)association response frames. Try to recover by using the data
3307 * from the beacon or probe response. This seems to afflict mobile
3308 * 2G/3G/4G wifi routers, reported models include the "Onda PN51T",
3309 * "Vodafone PocketWiFi 2", "ZTE MF60" and a similar T-Mobile device.
3310 */
57fa5e85
JB		 3311 if (!is_6ghz &&
3312 ((assoc_data->wmm && !elems->wmm_param) ||
3313 (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT) &&
3314 (!elems->ht_cap_elem || !elems->ht_operation)) ||
3315 (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) &&
3316 (!elems->vht_cap_elem || !elems->vht_operation)))) {
35d865af
JB		 3317 const struct cfg80211_bss_ies *ies;
3318 struct ieee802_11_elems bss_elems;
3319
3320 rcu_read_lock();
3321 ies = rcu_dereference(cbss->ies);
3322 if (ies)
3323 bss_ies = kmemdup(ies, sizeof(*ies) + ies->len,
3324 GFP_ATOMIC);
3325 rcu_read_unlock();
3326 if (!bss_ies)
3327 return false;
3328
3329 ieee802_11_parse_elems(bss_ies->data, bss_ies->len,
4abb52a4
SS		 3330 false, &bss_elems,
3331 mgmt->bssid,
3332 assoc_data->bss->bssid);
35d865af 3333 if (assoc_data->wmm &&
f61d7884
JB		 3334 !elems->wmm_param && bss_elems.wmm_param) {
3335 elems->wmm_param = bss_elems.wmm_param;
35d865af
JB		 3336 sdata_info(sdata,
3337 "AP bug: WMM param missing from AssocResp\n");
3338 }
3339
3340 /*
3341 * Also check if we requested HT/VHT, otherwise the AP doesn't
3342 * have to include the IEs in the (re)association response.
3343 */
f61d7884 3344 if (!elems->ht_cap_elem && bss_elems.ht_cap_elem &&
35d865af 3345 !(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) {
f61d7884 3346 elems->ht_cap_elem = bss_elems.ht_cap_elem;
35d865af
JB		 3347 sdata_info(sdata,
3348 "AP bug: HT capability missing from AssocResp\n");
3349 }
f61d7884 3350 if (!elems->ht_operation && bss_elems.ht_operation &&
35d865af 3351 !(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) {
f61d7884 3352 elems->ht_operation = bss_elems.ht_operation;
35d865af
JB		 3353 sdata_info(sdata,
3354 "AP bug: HT operation missing from AssocResp\n");
3355 }
f61d7884 3356 if (!elems->vht_cap_elem && bss_elems.vht_cap_elem &&
35d865af 3357 !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) {
f61d7884 3358 elems->vht_cap_elem = bss_elems.vht_cap_elem;
35d865af
JB		 3359 sdata_info(sdata,
3360 "AP bug: VHT capa missing from AssocResp\n");
3361 }
f61d7884 3362 if (!elems->vht_operation && bss_elems.vht_operation &&
35d865af 3363 !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) {
f61d7884 3364 elems->vht_operation = bss_elems.vht_operation;
35d865af
JB		 3365 sdata_info(sdata,
3366 "AP bug: VHT operation missing from AssocResp\n");
3367 }
3368 }
3369
30eb1dc2
JB		 3370 /*
3371 * We previously checked these in the beacon/probe response, so
3372 * they should be present here. This is just a safety net.
3373 */
57fa5e85 3374 if (!is_6ghz && !(ifmgd->flags & IEEE80211_STA_DISABLE_HT) &&
f61d7884 3375 (!elems->wmm_param || !elems->ht_cap_elem || !elems->ht_operation)) {
30eb1dc2 3376 sdata_info(sdata,
35d865af
JB		 3377 "HT AP is missing WMM params or HT capability/operation\n");
3378 ret = false;
3379 goto out;
30eb1dc2
JB		 3380 }
3381
57fa5e85 3382 if (!is_6ghz && !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) &&
f61d7884 3383 (!elems->vht_cap_elem || !elems->vht_operation)) {
30eb1dc2 3384 sdata_info(sdata,
35d865af
JB		 3385 "VHT AP is missing VHT capability/operation\n");
3386 ret = false;
3387 goto out;
30eb1dc2
JB		 3388 }
3389
57fa5e85
JB		 3390 if (is_6ghz && !(ifmgd->flags & IEEE80211_STA_DISABLE_HE) &&
3391 !elems->he_6ghz_capa) {
3392 sdata_info(sdata,
3393 "HE 6 GHz AP is missing HE 6 GHz band capability\n");
3394 ret = false;
3395 goto out;
3396 }
3397
2a33bee2
GE		 3398 mutex_lock(&sdata->local->sta_mtx);
3399 /*
3400 * station info was already allocated and inserted before
3401 * the association and should be available to us
3402 */
7852e361 3403 sta = sta_info_get(sdata, cbss->bssid);
2a33bee2
GE		 3404 if (WARN_ON(!sta)) {
3405 mutex_unlock(&sdata->local->sta_mtx);
35d865af
JB		 3406 ret = false;
3407 goto out;
77fdaa12 3408 }
05e5e883 3409
21a8e9dd
MSS		 3410 sband = ieee80211_get_sband(sdata);
3411 if (!sband) {
3412 mutex_unlock(&sdata->local->sta_mtx);
3413 ret = false;
3414 goto out;
3415 }
f709fc69 3416
41cbb0f5 3417 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HE) &&
f61d7884 3418 (!elems->he_cap || !elems->he_operation)) {
41cbb0f5
LC		 3419 mutex_unlock(&sdata->local->sta_mtx);
3420 sdata_info(sdata,
3421 "HE AP is missing HE capability/operation\n");
3422 ret = false;
3423 goto out;
3424 }
3425
30eb1dc2 3426 /* Set up internal HT/VHT capabilities */
f61d7884 3427 if (elems->ht_cap_elem && !(ifmgd->flags & IEEE80211_STA_DISABLE_HT))
ef96a842 3428 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
f61d7884 3429 elems->ht_cap_elem, sta);
64f68e5d 3430
f61d7884 3431 if (elems->vht_cap_elem && !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
818255ea 3432 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
f61d7884 3433 elems->vht_cap_elem, sta);
818255ea 3434
f61d7884
JB		 3435 if (elems->he_operation && !(ifmgd->flags & IEEE80211_STA_DISABLE_HE) &&
3436 elems->he_cap) {
41cbb0f5 3437 ieee80211_he_cap_ie_to_sta_he_cap(sdata, sband,
f61d7884
JB		 3438 elems->he_cap,
3439 elems->he_cap_len,
1bb9a8a4 3440 elems->he_6ghz_capa,
41cbb0f5
LC		 3441 sta);
3442
3443 bss_conf->he_support = sta->sta.he_cap.has_he;
d46b4ab8
ST		 3444 if (elems->rsnx && elems->rsnx_len &&
3445 (elems->rsnx[0] & WLAN_RSNX_CAPA_PROTECTED_TWT) &&
3446 wiphy_ext_feature_isset(local->hw.wiphy,
3447 NL80211_EXT_FEATURE_PROTECTED_TWT))
3448 bss_conf->twt_protected = true;
3449 else
3450 bss_conf->twt_protected = false;
3451
f61d7884 3452 changed |= ieee80211_recalc_twt_req(sdata, sta, elems);
41cbb0f5
LC		 3453 } else {
3454 bss_conf->he_support = false;
55ebd6e6 3455 bss_conf->twt_requester = false;
d46b4ab8 3456 bss_conf->twt_protected = false;
41cbb0f5
LC		 3457 }
3458
3459 if (bss_conf->he_support) {
dd56e902 3460 bss_conf->he_bss_color.color =
f61d7884 3461 le32_get_bits(elems->he_operation->he_oper_params,
77cbbc35 3462 IEEE80211_HE_OPERATION_BSS_COLOR_MASK);
dd56e902
JC		 3463 bss_conf->he_bss_color.partial =
3464 le32_get_bits(elems->he_operation->he_oper_params,
3465 IEEE80211_HE_OPERATION_PARTIAL_BSS_COLOR);
75e6b594
JB		 3466 bss_conf->he_bss_color.enabled =
3467 !le32_get_bits(elems->he_operation->he_oper_params,
3468 IEEE80211_HE_OPERATION_BSS_COLOR_DISABLED);
322cd27c 3469
75e6b594 3470 if (bss_conf->he_bss_color.enabled)
322cd27c 3471 changed |= BSS_CHANGED_HE_BSS_COLOR;
41cbb0f5 3472
41cbb0f5 3473 bss_conf->htc_trig_based_pkt_ext =
f61d7884 3474 le32_get_bits(elems->he_operation->he_oper_params,
77cbbc35 3475 IEEE80211_HE_OPERATION_DFLT_PE_DURATION_MASK);
41cbb0f5 3476 bss_conf->frame_time_rts_th =
f61d7884 3477 le32_get_bits(elems->he_operation->he_oper_params,
77cbbc35 3478 IEEE80211_HE_OPERATION_RTS_THRESHOLD_MASK);
41cbb0f5
LC		 3479
3480 bss_conf->multi_sta_back_32bit =
3481 sta->sta.he_cap.he_cap_elem.mac_cap_info[2] &
3482 IEEE80211_HE_MAC_CAP2_32BIT_BA_BITMAP;
3483
3484 bss_conf->ack_enabled =
3485 sta->sta.he_cap.he_cap_elem.mac_cap_info[2] &
3486 IEEE80211_HE_MAC_CAP2_ACK_EN;
3487
f61d7884
JB		 3488 bss_conf->uora_exists = !!elems->uora_element;
3489 if (elems->uora_element)
3490 bss_conf->uora_ocw_range = elems->uora_element[0];
41cbb0f5 3491
f61d7884
JB		 3492 ieee80211_he_op_ie_to_bss_conf(&sdata->vif, elems->he_operation);
3493 ieee80211_he_spr_ie_to_bss_conf(&sdata->vif, elems->he_spr);
41cbb0f5
LC		 3494 /* TODO: OPEN: what happens if BSS color disable is set? */
3495 }
3496
78ac51f8
SS		 3497 if (cbss->transmitted_bss) {
3498 bss_conf->nontransmitted = true;
3499 ether_addr_copy(bss_conf->transmitter_bssid,
3500 cbss->transmitted_bss->bssid);
3501 bss_conf->bssid_indicator = cbss->max_bssid_indicator;
3502 bss_conf->bssid_index = cbss->bssid_index;
3503 }
3504
30eb1dc2
JB		 3505 /*
3506 * Some APs, e.g. Netgear WNDR3700, report invalid HT operation data
3507 * in their association response, so ignore that data for our own
3508 * configuration. If it changed since the last beacon, we'll get the
3509 * next beacon and update then.
3510 */
1128958d 3511
bee7f586
JB		 3512 /*
3513 * If an operating mode notification IE is present, override the
3514 * NSS calculation (that would be done in rate_control_rate_init())
3515 * and use the # of streams from that element.
3516 */
f61d7884
JB		 3517 if (elems->opmode_notif &&
3518 !(*elems->opmode_notif & IEEE80211_OPMODE_NOTIF_RX_NSS_TYPE_BF)) {
bee7f586
JB		 3519 u8 nss;
3520
f61d7884 3521 nss = *elems->opmode_notif & IEEE80211_OPMODE_NOTIF_RX_NSS_MASK;
bee7f586
JB		 3522 nss >>= IEEE80211_OPMODE_NOTIF_RX_NSS_SHIFT;
3523 nss += 1;
3524 sta->sta.rx_nss = nss;
3525 }
3526
4b7679a5 3527 rate_control_rate_init(sta);
f0706e82 3528
93f0490e 3529 if (ifmgd->flags & IEEE80211_STA_MFP_ENABLED) {
c2c98fde 3530 set_sta_flag(sta, WLAN_STA_MFP);
93f0490e
T		 3531 sta->sta.mfp = true;
3532 } else {
3533 sta->sta.mfp = false;
3534 }
5394af4d 3535
f61d7884 3536 sta->sta.wme = elems->wmm_param && local->hw.queues >= IEEE80211_NUM_ACS;
ddf4ac53 3537
3e4d40fa 3538 err = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
c8987876
JB		 3539 if (!err && !(ifmgd->flags & IEEE80211_STA_CONTROL_PORT))
3540 err = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
3541 if (err) {
bdcbd8e0
JB		 3542 sdata_info(sdata,
3543 "failed to move station %pM to desired state\n",
3544 sta->sta.addr);
c8987876
JB		 3545 WARN_ON(__sta_info_destroy(sta));
3546 mutex_unlock(&sdata->local->sta_mtx);
35d865af
JB		 3547 ret = false;
3548 goto out;
c8987876
JB		 3549 }
3550
7852e361 3551 mutex_unlock(&sdata->local->sta_mtx);
ddf4ac53 3552
f2176d72
JO		 3553 /*
3554 * Always handle WMM once after association regardless
3555 * of the first value the AP uses. Setting -1 here has
3556 * that effect because the AP values is an unsigned
3557 * 4-bit value.
3558 */
3559 ifmgd->wmm_last_param_set = -1;
2e249fc3 3560 ifmgd->mu_edca_last_param_set = -1;
f2176d72 3561
2ed77ea6 3562 if (ifmgd->flags & IEEE80211_STA_DISABLE_WMM) {
cec66283 3563 ieee80211_set_wmm_default(sdata, false, false);
f61d7884
JB		 3564 } else if (!ieee80211_sta_wmm_params(local, sdata, elems->wmm_param,
3565 elems->wmm_param_len,
3566 elems->mu_edca_param_set)) {
2ed77ea6
JB		 3567 /* still enable QoS since we might have HT/VHT */
3568 ieee80211_set_wmm_default(sdata, false, true);
3569 /* set the disable-WMM flag in this case to disable
3570 * tracking WMM parameter changes in the beacon if
3571 * the parameters weren't actually valid. Doing so
3572 * avoids changing parameters very strangely when
3573 * the AP is going back and forth between valid and
3574 * invalid parameters.
3575 */
3576 ifmgd->flags |= IEEE80211_STA_DISABLE_WMM;
3577 }
3abead59 3578 changed |= BSS_CHANGED_QOS;
f0706e82 3579
f61d7884 3580 if (elems->max_idle_period_ie) {
e38a017b 3581 bss_conf->max_idle_period =
f61d7884 3582 le16_to_cpu(elems->max_idle_period_ie->max_idle_period);
e38a017b 3583 bss_conf->protected_keep_alive =
f61d7884 3584 !!(elems->max_idle_period_ie->idle_options &
e38a017b
AS		 3585 WLAN_IDLE_OPTIONS_PROTECTED_KEEP_ALIVE);
3586 changed |= BSS_CHANGED_KEEP_ALIVE;
3587 } else {
3588 bss_conf->max_idle_period = 0;
3589 bss_conf->protected_keep_alive = false;
3590 }
3591
1db364c8 3592 /* set assoc capability (AID was already set earlier),
60f8b39c 3593 * ieee80211_set_associated() will tell the driver */
60f8b39c 3594 bss_conf->assoc_capability = capab_info;
0c1ad2ca 3595 ieee80211_set_associated(sdata, cbss, changed);
f0706e82 3596
d524215f
FF		 3597 /*
3598 * If we're using 4-addr mode, let the AP know that we're
3599 * doing so, so that it can create the STA VLAN on its side
3600 */
3601 if (ifmgd->use_4addr)
3602 ieee80211_send_4addr_nullfunc(local, sdata);
3603
15b7b062 3604 /*
b291ba11
JB		 3605 * Start timer to probe the connection to the AP now.
3606 * Also start the timer that will detect beacon loss.
15b7b062 3607 */
b291ba11 3608 ieee80211_sta_rx_notify(sdata, (struct ieee80211_hdr *)mgmt);
d3a910a8 3609 ieee80211_sta_reset_beacon_monitor(sdata);
15b7b062 3610
35d865af
JB		 3611 ret = true;
3612 out:
3613 kfree(bss_ies);
3614 return ret;
f0706e82
JB		 3615}
3616
8d61ffa5
JB		 3617static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata,
3618 struct ieee80211_mgmt *mgmt,
3619 size_t len)
66e67e41
JB		 3620{
3621 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3622 struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data;
3623 u16 capab_info, status_code, aid;
3624 struct ieee802_11_elems elems;
b0b6aa2c 3625 int ac, uapsd_queues = -1;
66e67e41
JB		 3626 u8 *pos;
3627 bool reassoc;
8d61ffa5 3628 struct cfg80211_bss *bss;
d0d1a12f
EG		 3629 struct ieee80211_event event = {
3630 .type = MLME_EVENT,
3631 .u.mlme.data = ASSOC_EVENT,
3632 };
66e67e41 3633
8d61ffa5 3634 sdata_assert_lock(sdata);
66e67e41
JB		 3635
3636 if (!assoc_data)
8d61ffa5 3637 return;
b203ca39 3638 if (!ether_addr_equal(assoc_data->bss->bssid, mgmt->bssid))
8d61ffa5 3639 return;
66e67e41
JB		 3640
3641 /*
3642 * AssocResp and ReassocResp have identical structure, so process both
3643 * of them in this function.
3644 */
3645
3646 if (len < 24 + 6)
8d61ffa5 3647 return;
66e67e41 3648
7a7d3e4c 3649 reassoc = ieee80211_is_reassoc_resp(mgmt->frame_control);
66e67e41
JB		 3650 capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info);
3651 status_code = le16_to_cpu(mgmt->u.assoc_resp.status_code);
3652 aid = le16_to_cpu(mgmt->u.assoc_resp.aid);
3653
bdcbd8e0
JB		 3654 sdata_info(sdata,
3655 "RX %sssocResp from %pM (capab=0x%x status=%d aid=%d)\n",
3656 reassoc ? "Rea" : "A", mgmt->sa,
3657 capab_info, status_code, (u16)(aid & ~(BIT(15) | BIT(14))));
66e67e41 3658
39404fee
JM		 3659 if (assoc_data->fils_kek_len &&
3660 fils_decrypt_assoc_resp(sdata, (u8 *)mgmt, &len, assoc_data) < 0)
3661 return;
3662
66e67e41 3663 pos = mgmt->u.assoc_resp.variable;
4abb52a4
SS		 3664 ieee802_11_parse_elems(pos, len - (pos - (u8 *)mgmt), false, &elems,
3665 mgmt->bssid, assoc_data->bss->bssid);
66e67e41
JB		 3666
3667 if (status_code == WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY &&
79ba1d89
JB		 3668 elems.timeout_int &&
3669 elems.timeout_int->type == WLAN_TIMEOUT_ASSOC_COMEBACK) {
66e67e41 3670 u32 tu, ms;
79ba1d89 3671 tu = le32_to_cpu(elems.timeout_int->value);
66e67e41 3672 ms = tu * 1024 / 1000;
bdcbd8e0
JB		 3673 sdata_info(sdata,
3674 "%pM rejected association temporarily; comeback duration %u TU (%u ms)\n",
3675 mgmt->sa, tu, ms);
66e67e41 3676 assoc_data->timeout = jiffies + msecs_to_jiffies(ms);
89afe614 3677 assoc_data->timeout_started = true;
66e67e41 3678 if (ms > IEEE80211_ASSOC_TIMEOUT)
8d61ffa5
JB		 3679 run_again(sdata, assoc_data->timeout);
3680 return;
66e67e41
JB		 3681 }
3682
8d61ffa5 3683 bss = assoc_data->bss;
66e67e41
JB		 3684
3685 if (status_code != WLAN_STATUS_SUCCESS) {
bdcbd8e0
JB		 3686 sdata_info(sdata, "%pM denied association (code=%d)\n",
3687 mgmt->sa, status_code);
e6f462df 3688 ieee80211_destroy_assoc_data(sdata, false, false);
d0d1a12f
EG		 3689 event.u.mlme.status = MLME_DENIED;
3690 event.u.mlme.reason = status_code;
3691 drv_event_callback(sdata->local, sdata, &event);
66e67e41 3692 } else {
f61d7884 3693 if (!ieee80211_assoc_success(sdata, bss, mgmt, len, &elems)) {
66e67e41 3694 /* oops -- internal error -- send timeout for now */
e6f462df 3695 ieee80211_destroy_assoc_data(sdata, false, false);
959867fa 3696 cfg80211_assoc_timeout(sdata->dev, bss);
8d61ffa5 3697 return;
66e67e41 3698 }
d0d1a12f
EG		 3699 event.u.mlme.status = MLME_SUCCESS;
3700 drv_event_callback(sdata->local, sdata, &event);
635d999f 3701 sdata_info(sdata, "associated\n");
79ebfb85
JB		 3702
3703 /*
3704 * destroy assoc_data afterwards, as otherwise an idle
3705 * recalc after assoc_data is NULL but before associated
3706 * is set can cause the interface to go idle
3707 */
e6f462df 3708 ieee80211_destroy_assoc_data(sdata, true, false);
b0b6aa2c
EP		 3709
3710 /* get uapsd queues configuration */
3711 uapsd_queues = 0;
3712 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
3713 if (sdata->tx_conf[ac].uapsd)
f438ceb8 3714 uapsd_queues |= ieee80211_ac_to_qos_mask[ac];
66e67e41
JB		 3715 }
3716
4d9ec73d
JM		 3717 cfg80211_rx_assoc_resp(sdata->dev, bss, (u8 *)mgmt, len, uapsd_queues,
3718 ifmgd->assoc_req_ies, ifmgd->assoc_req_ies_len);
66e67e41 3719}
8e3c1b77 3720
98c8fccf 3721static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
8e3c1b77 3722 struct ieee80211_mgmt *mgmt, size_t len,
4abb52a4 3723 struct ieee80211_rx_status *rx_status)
98c8fccf
JB		 3724{
3725 struct ieee80211_local *local = sdata->local;
c2b13452 3726 struct ieee80211_bss *bss;
98c8fccf 3727 struct ieee80211_channel *channel;
56007a02 3728
8d61ffa5 3729 sdata_assert_lock(sdata);
b4f286a1 3730
3b23c184
TP		 3731 channel = ieee80211_get_channel_khz(local->hw.wiphy,
3732 ieee80211_rx_status_to_khz(rx_status));
3afc2167 3733 if (!channel)
98c8fccf
JB		 3734 return;
3735
4abb52a4 3736 bss = ieee80211_bss_info_update(local, rx_status, mgmt, len, channel);
817cee76 3737 if (bss) {
817cee76 3738 sdata->vif.bss_conf.beacon_rate = bss->beacon_rate;
d2722f8b 3739 ieee80211_rx_bss_put(local, bss);
817cee76 3740 }
f0706e82
JB		 3741}
3742
3743
f698d856 3744static void ieee80211_rx_mgmt_probe_resp(struct ieee80211_sub_if_data *sdata,
af6b6374 3745 struct sk_buff *skb)
f0706e82 3746{
af6b6374 3747 struct ieee80211_mgmt *mgmt = (void *)skb->data;
15b7b062 3748 struct ieee80211_if_managed *ifmgd;
af6b6374 3749 struct ieee80211_rx_status *rx_status = (void *) skb->cb;
85b27ef7 3750 struct ieee80211_channel *channel;
af6b6374 3751 size_t baselen, len = skb->len;
ae6a44e3 3752
15b7b062
KV		 3753 ifmgd = &sdata->u.mgd;
3754
8d61ffa5 3755 sdata_assert_lock(sdata);
77fdaa12 3756
85b27ef7
AO		 3757 /*
3758 * According to Draft P802.11ax D6.0 clause 26.17.2.3.2:
3759 * "If a 6 GHz AP receives a Probe Request frame and responds with
3760 * a Probe Response frame [..], the Address 1 field of the Probe
3761 * Response frame shall be set to the broadcast address [..]"
3762 * So, on 6GHz band we should also accept broadcast responses.
3763 */
3764 channel = ieee80211_get_channel(sdata->local->hw.wiphy,
3765 rx_status->freq);
3766 if (!channel)
3767 return;
3768
3769 if (!ether_addr_equal(mgmt->da, sdata->vif.addr) &&
3770 (channel->band != NL80211_BAND_6GHZ ||
3771 !is_broadcast_ether_addr(mgmt->da)))
8e7cdbb6
TW		 3772 return; /* ignore ProbeResp to foreign address */
3773
ae6a44e3
EK		 3774 baselen = (u8 *) mgmt->u.probe_resp.variable - (u8 *) mgmt;
3775 if (baselen > len)
3776 return;
3777
4abb52a4 3778 ieee80211_rx_bss_info(sdata, mgmt, len, rx_status);
9859b81e 3779
77fdaa12 3780 if (ifmgd->associated &&
b203ca39 3781 ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid))
4e5ff376 3782 ieee80211_reset_ap_probe(sdata);
f0706e82
JB		 3783}
3784
d91f36db
JB		 3785/*
3786 * This is the canonical list of information elements we care about,
3787 * the filter code also gives us all changes to the Microsoft OUI
c8d65917
SG		 3788 * (00:50:F2) vendor IE which is used for WMM which we need to track,
3789 * as well as the DTPC IE (part of the Cisco OUI) used for signaling
3790 * changes to requested client power.
d91f36db
JB		 3791 *
3792 * We implement beacon filtering in software since that means we can
3793 * avoid processing the frame here and in cfg80211, and userspace
3794 * will not be able to tell whether the hardware supports it or not.
3795 *
3796 * XXX: This list needs to be dynamic -- userspace needs to be able to
3797 * add items it requires. It also needs to be able to tell us to
3798 * look out for other vendor IEs.
3799 */
3800static const u64 care_about_ies =
1d4df3a5
JB		 3801 (1ULL << WLAN_EID_COUNTRY) |
3802 (1ULL << WLAN_EID_ERP_INFO) |
3803 (1ULL << WLAN_EID_CHANNEL_SWITCH) |
3804 (1ULL << WLAN_EID_PWR_CONSTRAINT) |
3805 (1ULL << WLAN_EID_HT_CAPABILITY) |
70a3fd6c
JB		 3806 (1ULL << WLAN_EID_HT_OPERATION) |
3807 (1ULL << WLAN_EID_EXT_CHANSWITCH_ANN);
d91f36db 3808
1ad22fb5
T		 3809static void ieee80211_handle_beacon_sig(struct ieee80211_sub_if_data *sdata,
3810 struct ieee80211_if_managed *ifmgd,
3811 struct ieee80211_bss_conf *bss_conf,
3812 struct ieee80211_local *local,
3813 struct ieee80211_rx_status *rx_status)
f0706e82 3814{
17e4ec14 3815 /* Track average RSSI from the Beacon frames of the current AP */
1ad22fb5 3816
17e4ec14
JM		 3817 if (ifmgd->flags & IEEE80211_STA_RESET_SIGNAL_AVE) {
3818 ifmgd->flags &= ~IEEE80211_STA_RESET_SIGNAL_AVE;
338c17ae 3819 ewma_beacon_signal_init(&ifmgd->ave_beacon_signal);
17e4ec14 3820 ifmgd->last_cqm_event_signal = 0;
391a200a 3821 ifmgd->count_beacon_signal = 1;
615f7b9b 3822 ifmgd->last_ave_beacon_signal = 0;
17e4ec14 3823 } else {
391a200a 3824 ifmgd->count_beacon_signal++;
17e4ec14 3825 }
615f7b9b 3826
338c17ae
JB		 3827 ewma_beacon_signal_add(&ifmgd->ave_beacon_signal, -rx_status->signal);
3828
615f7b9b
MV		 3829 if (ifmgd->rssi_min_thold != ifmgd->rssi_max_thold &&
3830 ifmgd->count_beacon_signal >= IEEE80211_SIGNAL_AVE_MIN_COUNT) {
338c17ae 3831 int sig = -ewma_beacon_signal_read(&ifmgd->ave_beacon_signal);
615f7b9b 3832 int last_sig = ifmgd->last_ave_beacon_signal;
a8182929
EG		 3833 struct ieee80211_event event = {
3834 .type = RSSI_EVENT,
3835 };
615f7b9b
MV		 3836
3837 /*
3838 * if signal crosses either of the boundaries, invoke callback
3839 * with appropriate parameters
3840 */
3841 if (sig > ifmgd->rssi_max_thold &&
3842 (last_sig <= ifmgd->rssi_min_thold || last_sig == 0)) {
3843 ifmgd->last_ave_beacon_signal = sig;
a8182929
EG		 3844 event.u.rssi.data = RSSI_EVENT_HIGH;
3845 drv_event_callback(local, sdata, &event);
615f7b9b
MV		 3846 } else if (sig < ifmgd->rssi_min_thold &&
3847 (last_sig >= ifmgd->rssi_max_thold ||
3848 last_sig == 0)) {
3849 ifmgd->last_ave_beacon_signal = sig;
a8182929
EG		 3850 event.u.rssi.data = RSSI_EVENT_LOW;
3851 drv_event_callback(local, sdata, &event);
615f7b9b
MV		 3852 }
3853 }
3854
17e4ec14 3855 if (bss_conf->cqm_rssi_thold &&
391a200a 3856 ifmgd->count_beacon_signal >= IEEE80211_SIGNAL_AVE_MIN_COUNT &&
ea086359 3857 !(sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)) {
338c17ae 3858 int sig = -ewma_beacon_signal_read(&ifmgd->ave_beacon_signal);
17e4ec14
JM		 3859 int last_event = ifmgd->last_cqm_event_signal;
3860 int thold = bss_conf->cqm_rssi_thold;
3861 int hyst = bss_conf->cqm_rssi_hyst;
338c17ae 3862
17e4ec14
JM		 3863 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_LOW,
769f07d8 3869 sig, GFP_KERNEL);
17e4ec14
JM		 3870 } else if (sig > thold &&
3871 (last_event == 0 || sig > last_event + hyst)) {
3872 ifmgd->last_cqm_event_signal = sig;
3873 ieee80211_cqm_rssi_notify(
3874 &sdata->vif,
3875 NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH,
769f07d8 3876 sig, GFP_KERNEL);
17e4ec14
JM		 3877 }
3878 }
3879
2c3c5f8c
AZ		 3880 if (bss_conf->cqm_rssi_low &&
3881 ifmgd->count_beacon_signal >= IEEE80211_SIGNAL_AVE_MIN_COUNT) {
3882 int sig = -ewma_beacon_signal_read(&ifmgd->ave_beacon_signal);
3883 int last_event = ifmgd->last_cqm_event_signal;
3884 int low = bss_conf->cqm_rssi_low;
3885 int high = bss_conf->cqm_rssi_high;
3886
3887 if (sig < low &&
3888 (last_event == 0 || last_event >= low)) {
3889 ifmgd->last_cqm_event_signal = sig;
3890 ieee80211_cqm_rssi_notify(
3891 &sdata->vif,
3892 NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW,
3893 sig, GFP_KERNEL);
3894 } else if (sig > high &&
3895 (last_event == 0 || last_event <= high)) {
3896 ifmgd->last_cqm_event_signal = sig;
3897 ieee80211_cqm_rssi_notify(
3898 &sdata->vif,
3899 NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH,
3900 sig, GFP_KERNEL);
3901 }
3902 }
1ad22fb5
T		 3903}
3904
78ac51f8
SS		 3905static bool ieee80211_rx_our_beacon(const u8 *tx_bssid,
3906 struct cfg80211_bss *bss)
3907{
3908 if (ether_addr_equal(tx_bssid, bss->bssid))
3909 return true;
3910 if (!bss->transmitted_bss)
3911 return false;
3912 return ether_addr_equal(tx_bssid, bss->transmitted_bss->bssid);
3913}
3914
1ad22fb5
T		 3915static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
3916 struct ieee80211_mgmt *mgmt, size_t len,
3917 struct ieee80211_rx_status *rx_status)
3918{
3919 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3920 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
3921 size_t baselen;
3922 struct ieee802_11_elems elems;
3923 struct ieee80211_local *local = sdata->local;
3924 struct ieee80211_chanctx_conf *chanctx_conf;
3925 struct ieee80211_channel *chan;
3926 struct sta_info *sta;
3927 u32 changed = 0;
3928 bool erp_valid;
3929 u8 erp_value = 0;
3930 u32 ncrc;
3931 u8 *bssid;
3932 u8 deauth_buf[IEEE80211_DEAUTH_FRAME_LEN];
3933
3934 sdata_assert_lock(sdata);
3935
3936 /* Process beacon from the current BSS */
3937 baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt;
3938 if (baselen > len)
3939 return;
3940
3941 rcu_read_lock();
3942 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3943 if (!chanctx_conf) {
3944 rcu_read_unlock();
3945 return;
3946 }
3947
3b23c184
TP		 3948 if (ieee80211_rx_status_to_khz(rx_status) !=
3949 ieee80211_channel_to_khz(chanctx_conf->def.chan)) {
1ad22fb5
T		 3950 rcu_read_unlock();
3951 return;
3952 }
3953 chan = chanctx_conf->def.chan;
3954 rcu_read_unlock();
3955
3956 if (ifmgd->assoc_data && ifmgd->assoc_data->need_beacon &&
78ac51f8 3957 ieee80211_rx_our_beacon(mgmt->bssid, ifmgd->assoc_data->bss)) {
1ad22fb5 3958 ieee802_11_parse_elems(mgmt->u.beacon.variable,
4abb52a4
SS		 3959 len - baselen, false, &elems,
3960 mgmt->bssid,
3961 ifmgd->assoc_data->bss->bssid);
1ad22fb5 3962
4abb52a4 3963 ieee80211_rx_bss_info(sdata, mgmt, len, rx_status);
78ac51f8
SS		 3964
3965 if (elems.dtim_period)
3966 ifmgd->dtim_period = elems.dtim_period;
1ad22fb5
T		 3967 ifmgd->have_beacon = true;
3968 ifmgd->assoc_data->need_beacon = false;
3969 if (ieee80211_hw_check(&local->hw, TIMING_BEACON_ONLY)) {
3970 sdata->vif.bss_conf.sync_tsf =
3971 le64_to_cpu(mgmt->u.beacon.timestamp);
3972 sdata->vif.bss_conf.sync_device_ts =
3973 rx_status->device_timestamp;
78ac51f8 3974 sdata->vif.bss_conf.sync_dtim_count = elems.dtim_count;
1ad22fb5 3975 }
78ac51f8
SS		 3976
3977 if (elems.mbssid_config_ie)
3978 bss_conf->profile_periodicity =
3979 elems.mbssid_config_ie->profile_periodicity;
3980
3981 if (elems.ext_capab_len >= 11 &&
3982 (elems.ext_capab[10] & WLAN_EXT_CAPA11_EMA_SUPPORT))
3983 bss_conf->ema_ap = true;
3984
1ad22fb5
T		 3985 /* continue assoc process */
3986 ifmgd->assoc_data->timeout = jiffies;
3987 ifmgd->assoc_data->timeout_started = true;
3988 run_again(sdata, ifmgd->assoc_data->timeout);
3989 return;
3990 }
3991
3992 if (!ifmgd->associated ||
78ac51f8 3993 !ieee80211_rx_our_beacon(mgmt->bssid, ifmgd->associated))
1ad22fb5
T		 3994 return;
3995 bssid = ifmgd->associated->bssid;
3996
3997 if (!(rx_status->flag & RX_FLAG_NO_SIGNAL_VAL))
3998 ieee80211_handle_beacon_sig(sdata, ifmgd, bss_conf,
3999 local, rx_status);
2c3c5f8c 4000
392b9ffb 4001 if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL) {
bdcbd8e0 4002 mlme_dbg_ratelimited(sdata,
112c31f0 4003 "cancelling AP probe due to a received beacon\n");
392b9ffb 4004 ieee80211_reset_ap_probe(sdata);
92778180
JM		 4005 }
4006
b291ba11
JB		 4007 /*
4008 * Push the beacon loss detection into the future since
4009 * we are processing a beacon from the AP just now.
4010 */
d3a910a8 4011 ieee80211_sta_reset_beacon_monitor(sdata);
b291ba11 4012
d91f36db
JB		 4013 ncrc = crc32_be(0, (void *)&mgmt->u.beacon.beacon_int, 4);
4014 ncrc = ieee802_11_parse_elems_crc(mgmt->u.beacon.variable,
b2e506bf 4015 len - baselen, false, &elems,
4abb52a4
SS		 4016 care_about_ies, ncrc,
4017 mgmt->bssid, bssid);
d91f36db 4018
90d13e8f 4019 if (ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK) &&
1db364c8 4020 ieee80211_check_tim(elems.tim, elems.tim_len, bss_conf->aid)) {
90d13e8f
JB		 4021 if (local->hw.conf.dynamic_ps_timeout > 0) {
4022 if (local->hw.conf.flags & IEEE80211_CONF_PS) {
4023 local->hw.conf.flags &= ~IEEE80211_CONF_PS;
4024 ieee80211_hw_config(local,
4025 IEEE80211_CONF_CHANGE_PS);
572e0012 4026 }
076cdcb1 4027 ieee80211_send_nullfunc(local, sdata, false);
90d13e8f
JB		 4028 } else if (!local->pspolling && sdata->u.mgd.powersave) {
4029 local->pspolling = true;
4030
4031 /*
4032 * Here is assumed that the driver will be
4033 * able to send ps-poll frame and receive a
4034 * response even though power save mode is
4035 * enabled, but some drivers might require
4036 * to disable power save here. This needs
4037 * to be investigated.
4038 */
4039 ieee80211_send_pspoll(local, sdata);
a97b77b9
VN		 4040 }
4041 }
7a5158ef 4042
b115b972
JD		 4043 if (sdata->vif.p2p ||
4044 sdata->vif.driver_flags & IEEE80211_VIF_GET_NOA_UPDATE) {
67baf663 4045 struct ieee80211_p2p_noa_attr noa = {};
488dd7b5
JB		 4046 int ret;
4047
4048 ret = cfg80211_get_p2p_attr(mgmt->u.beacon.variable,
4049 len - baselen,
4050 IEEE80211_P2P_ATTR_ABSENCE_NOTICE,
934457ee 4051 (u8 *) &noa, sizeof(noa));
67baf663
JD		 4052 if (ret >= 2) {
4053 if (sdata->u.mgd.p2p_noa_index != noa.index) {
4054 /* valid noa_attr and index changed */
4055 sdata->u.mgd.p2p_noa_index = noa.index;
4056 memcpy(&bss_conf->p2p_noa_attr, &noa, sizeof(noa));
4057 changed |= BSS_CHANGED_P2P_PS;
4058 /*
4059 * make sure we update all information, the CRC
4060 * mechanism doesn't look at P2P attributes.
4061 */
4062 ifmgd->beacon_crc_valid = false;
4063 }
4064 } else if (sdata->u.mgd.p2p_noa_index != -1) {
4065 /* noa_attr not found and we had valid noa_attr before */
4066 sdata->u.mgd.p2p_noa_index = -1;
4067 memset(&bss_conf->p2p_noa_attr, 0, sizeof(bss_conf->p2p_noa_attr));
488dd7b5 4068 changed |= BSS_CHANGED_P2P_PS;
488dd7b5
JB		 4069 ifmgd->beacon_crc_valid = false;
4070 }
4071 }
4072
0c21e632
LC		 4073 if (ifmgd->csa_waiting_bcn)
4074 ieee80211_chswitch_post_beacon(sdata);
4075
2ecc3905
AB		 4076 /*
4077 * Update beacon timing and dtim count on every beacon appearance. This
4078 * will allow the driver to use the most updated values. Do it before
4079 * comparing this one with last received beacon.
4080 * IMPORTANT: These parameters would possibly be out of sync by the time
4081 * the driver will use them. The synchronized view is currently
4082 * guaranteed only in certain callbacks.
4083 */
30686bf7 4084 if (ieee80211_hw_check(&local->hw, TIMING_BEACON_ONLY)) {
2ecc3905
AB		 4085 sdata->vif.bss_conf.sync_tsf =
4086 le64_to_cpu(mgmt->u.beacon.timestamp);
4087 sdata->vif.bss_conf.sync_device_ts =
4088 rx_status->device_timestamp;
78ac51f8 4089 sdata->vif.bss_conf.sync_dtim_count = elems.dtim_count;
2ecc3905
AB		 4090 }
4091
d8ec4433 4092 if (ncrc == ifmgd->beacon_crc && ifmgd->beacon_crc_valid)
8d61ffa5 4093 return;
30196673 4094 ifmgd->beacon_crc = ncrc;
d8ec4433 4095 ifmgd->beacon_crc_valid = true;
30196673 4096
4abb52a4 4097 ieee80211_rx_bss_info(sdata, mgmt, len, rx_status);
7d25745d 4098
d70b7616 4099 ieee80211_sta_process_chanswitch(sdata, rx_status->mactime,
2ba45384 4100 rx_status->device_timestamp,
d70b7616
JB		 4101 &elems, true);
4102
095d81ce
JB		 4103 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_WMM) &&
4104 ieee80211_sta_wmm_params(local, sdata, elems.wmm_param,
41cbb0f5
LC		 4105 elems.wmm_param_len,
4106 elems.mu_edca_param_set))
7d25745d
JB		 4107 changed |= BSS_CHANGED_QOS;
4108
c65dd147
EG		 4109 /*
4110 * If we haven't had a beacon before, tell the driver about the
ef429dad 4111 * DTIM period (and beacon timing if desired) now.
c65dd147 4112 */
989c6505 4113 if (!ifmgd->have_beacon) {
c65dd147 4114 /* a few bogus AP send dtim_period = 0 or no TIM IE */
78ac51f8 4115 bss_conf->dtim_period = elems.dtim_period ?: 1;
ef429dad 4116
989c6505
AB		 4117 changed |= BSS_CHANGED_BEACON_INFO;
4118 ifmgd->have_beacon = true;
482a9c74
AB		 4119
4120 mutex_lock(&local->iflist_mtx);
4a733ef1 4121 ieee80211_recalc_ps(local);
482a9c74
AB		 4122 mutex_unlock(&local->iflist_mtx);
4123
ce857888 4124 ieee80211_recalc_ps_vif(sdata);
c65dd147
EG		 4125 }
4126
1946bed9 4127 if (elems.erp_info) {
7a5158ef
JB		 4128 erp_valid = true;
4129 erp_value = elems.erp_info[0];
4130 } else {
4131 erp_valid = false;
50c4afb9 4132 }
7a5158ef
JB		 4133 changed |= ieee80211_handle_bss_capability(sdata,
4134 le16_to_cpu(mgmt->u.beacon.capab_info),
4135 erp_valid, erp_value);
f0706e82 4136
1128958d 4137 mutex_lock(&local->sta_mtx);
bee7f586
JB		 4138 sta = sta_info_get(sdata, bssid);
4139
c9d3245e
JC		 4140 changed |= ieee80211_recalc_twt_req(sdata, sta, &elems);
4141
2a333a0d
JB		 4142 if (ieee80211_config_bw(sdata, sta, elems.ht_cap_elem,
4143 elems.vht_cap_elem, elems.ht_operation,
41cbb0f5
LC		 4144 elems.vht_operation, elems.he_operation,
4145 bssid, &changed)) {
30eb1dc2 4146 mutex_unlock(&local->sta_mtx);
89f774e6
JB		 4147 sdata_info(sdata,
4148 "failed to follow AP %pM bandwidth change, disconnect\n",
4149 bssid);
30eb1dc2
JB		 4150 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
4151 WLAN_REASON_DEAUTH_LEAVING,
4152 true, deauth_buf);
a90faa9d
EG		 4153 ieee80211_report_disconnect(sdata, deauth_buf,
4154 sizeof(deauth_buf), true,
4155 WLAN_REASON_DEAUTH_LEAVING);
8d61ffa5 4156 return;
30eb1dc2 4157 }
bee7f586
JB		 4158
4159 if (sta && elems.opmode_notif)
4160 ieee80211_vht_handle_opmode(sdata, sta, *elems.opmode_notif,
cf1e05c6 4161 rx_status->band);
1128958d 4162 mutex_unlock(&local->sta_mtx);
d3c990fb 4163
24a4e400
SG		 4164 changed |= ieee80211_handle_pwr_constr(sdata, chan, mgmt,
4165 elems.country_elem,
4166 elems.country_elem_len,
c8d65917
SG		 4167 elems.pwr_constr_elem,
4168 elems.cisco_dtpc_elem);
3f2355cb 4169
471b3efd 4170 ieee80211_bss_info_change_notify(sdata, changed);
f0706e82
JB		 4171}
4172
1fa57d01
JB		 4173void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
4174 struct sk_buff *skb)
f0706e82
JB		 4175{
4176 struct ieee80211_rx_status *rx_status;
f0706e82
JB		 4177 struct ieee80211_mgmt *mgmt;
4178 u16 fc;
1b3a2e49
JB		 4179 struct ieee802_11_elems elems;
4180 int ies_len;
f0706e82 4181
f0706e82
JB		 4182 rx_status = (struct ieee80211_rx_status *) skb->cb;
4183 mgmt = (struct ieee80211_mgmt *) skb->data;
4184 fc = le16_to_cpu(mgmt->frame_control);
4185
8d61ffa5 4186 sdata_lock(sdata);
77fdaa12 4187
66e67e41
JB		 4188 switch (fc & IEEE80211_FCTL_STYPE) {
4189 case IEEE80211_STYPE_BEACON:
8d61ffa5 4190 ieee80211_rx_mgmt_beacon(sdata, mgmt, skb->len, rx_status);
66e67e41
JB		 4191 break;
4192 case IEEE80211_STYPE_PROBE_RESP:
4193 ieee80211_rx_mgmt_probe_resp(sdata, skb);
4194 break;
4195 case IEEE80211_STYPE_AUTH:
8d61ffa5 4196 ieee80211_rx_mgmt_auth(sdata, mgmt, skb->len);
66e67e41
JB		 4197 break;
4198 case IEEE80211_STYPE_DEAUTH:
8d61ffa5 4199 ieee80211_rx_mgmt_deauth(sdata, mgmt, skb->len);
66e67e41
JB		 4200 break;
4201 case IEEE80211_STYPE_DISASSOC:
8d61ffa5 4202 ieee80211_rx_mgmt_disassoc(sdata, mgmt, skb->len);
66e67e41
JB		 4203 break;
4204 case IEEE80211_STYPE_ASSOC_RESP:
4205 case IEEE80211_STYPE_REASSOC_RESP:
8d61ffa5 4206 ieee80211_rx_mgmt_assoc_resp(sdata, mgmt, skb->len);
66e67e41
JB		 4207 break;
4208 case IEEE80211_STYPE_ACTION:
37799e52 4209 if (mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT) {
1b3a2e49
JB		 4210 ies_len = skb->len -
4211 offsetof(struct ieee80211_mgmt,
4212 u.action.u.chan_switch.variable);
37799e52
JB		 4213
4214 if (ies_len < 0)
4215 break;
4216
4abb52a4 4217 /* CSA IE cannot be overridden, no need for BSSID */
37799e52
JB		 4218 ieee802_11_parse_elems(
4219 mgmt->u.action.u.chan_switch.variable,
4abb52a4 4220 ies_len, true, &elems, mgmt->bssid, NULL);
37799e52
JB		 4221
4222 if (elems.parse_error)
4223 break;
4224
1b3a2e49 4225 ieee80211_sta_process_chanswitch(sdata,
2ba45384
LC		 4226 rx_status->mactime,
4227 rx_status->device_timestamp,
4228 &elems, false);
1b3a2e49
JB		 4229 } else if (mgmt->u.action.category == WLAN_CATEGORY_PUBLIC) {
4230 ies_len = skb->len -
4231 offsetof(struct ieee80211_mgmt,
4232 u.action.u.ext_chan_switch.variable);
4233
4234 if (ies_len < 0)
4235 break;
4236
4abb52a4
SS		 4237 /*
4238 * extended CSA IE can't be overridden, no need for
4239 * BSSID
4240 */
1b3a2e49
JB		 4241 ieee802_11_parse_elems(
4242 mgmt->u.action.u.ext_chan_switch.variable,
4abb52a4 4243 ies_len, true, &elems, mgmt->bssid, NULL);
1b3a2e49
JB		 4244
4245 if (elems.parse_error)
4246 break;
4247
4248 /* for the handling code pretend this was also an IE */
4249 elems.ext_chansw_ie =
4250 &mgmt->u.action.u.ext_chan_switch.data;
4251
66e67e41 4252 ieee80211_sta_process_chanswitch(sdata,
2ba45384
LC		 4253 rx_status->mactime,
4254 rx_status->device_timestamp,
4255 &elems, false);
77fdaa12 4256 }
37799e52 4257 break;
77fdaa12 4258 }
8d61ffa5 4259 sdata_unlock(sdata);
f0706e82
JB		 4260}
4261
34f11cd3 4262static void ieee80211_sta_timer(struct timer_list *t)
f0706e82 4263{
60f8b39c 4264 struct ieee80211_sub_if_data *sdata =
34f11cd3 4265 from_timer(sdata, t, u.mgd.timer);
5bb644a0 4266
9b7d72c1 4267 ieee80211_queue_work(&sdata->local->hw, &sdata->work);
f0706e82
JB		 4268}
4269
04ac3c0e 4270static void ieee80211_sta_connection_lost(struct ieee80211_sub_if_data *sdata,
6b684db1 4271 u8 *bssid, u8 reason, bool tx)
04ac3c0e 4272{
6ae16775 4273 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
04ac3c0e 4274
37ad3888 4275 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, reason,
6b684db1 4276 tx, frame_buf);
37ad3888 4277
a90faa9d
EG		 4278 ieee80211_report_disconnect(sdata, frame_buf, sizeof(frame_buf), true,
4279 reason);
04ac3c0e
FF		 4280}
4281
46cad4b7 4282static int ieee80211_auth(struct ieee80211_sub_if_data *sdata)
66e67e41
JB		 4283{
4284 struct ieee80211_local *local = sdata->local;
4285 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4286 struct ieee80211_mgd_auth_data *auth_data = ifmgd->auth_data;
1672c0e3 4287 u32 tx_flags = 0;
46cad4b7
JB		 4288 u16 trans = 1;
4289 u16 status = 0;
d4e36e55 4290 u16 prepare_tx_duration = 0;
66e67e41 4291
8d61ffa5 4292 sdata_assert_lock(sdata);
66e67e41
JB		 4293
4294 if (WARN_ON_ONCE(!auth_data))
4295 return -EINVAL;
4296
66e67e41
JB		 4297 auth_data->tries++;
4298
4299 if (auth_data->tries > IEEE80211_AUTH_MAX_TRIES) {
bdcbd8e0
JB		 4300 sdata_info(sdata, "authentication with %pM timed out\n",
4301 auth_data->bss->bssid);
66e67e41
JB		 4302
4303 /*
4304 * Most likely AP is not in the range so remove the
4305 * bss struct for that AP.
4306 */
4307 cfg80211_unlink_bss(local->hw.wiphy, auth_data->bss);
4308
4309 return -ETIMEDOUT;
4310 }
4311
d4e36e55
IP		 4312 if (auth_data->algorithm == WLAN_AUTH_SAE)
4313 prepare_tx_duration =
4314 jiffies_to_msecs(IEEE80211_AUTH_TIMEOUT_SAE);
4315
4316 drv_mgd_prepare_tx(local, sdata, prepare_tx_duration);
a1845fc7 4317
46cad4b7
JB		 4318 sdata_info(sdata, "send auth to %pM (try %d/%d)\n",
4319 auth_data->bss->bssid, auth_data->tries,
4320 IEEE80211_AUTH_MAX_TRIES);
66e67e41 4321
46cad4b7 4322 auth_data->expected_transaction = 2;
6b8ece3a 4323
46cad4b7
JB		 4324 if (auth_data->algorithm == WLAN_AUTH_SAE) {
4325 trans = auth_data->sae_trans;
4326 status = auth_data->sae_status;
4327 auth_data->expected_transaction = trans;
4328 }
66e67e41 4329
46cad4b7
JB		 4330 if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS))
4331 tx_flags = IEEE80211_TX_CTL_REQ_TX_STATUS |
4332 IEEE80211_TX_INTFL_MLME_CONN_TX;
66e67e41 4333
46cad4b7
JB		 4334 ieee80211_send_auth(sdata, trans, auth_data->algorithm, status,
4335 auth_data->data, auth_data->data_len,
4336 auth_data->bss->bssid,
4337 auth_data->bss->bssid, NULL, 0, 0,
4338 tx_flags);
66e67e41 4339
6211dd12 4340 if (tx_flags == 0) {
407879b6
IP		 4341 if (auth_data->algorithm == WLAN_AUTH_SAE)
4342 auth_data->timeout = jiffies +
4343 IEEE80211_AUTH_TIMEOUT_SAE;
4344 else
4345 auth_data->timeout = jiffies + IEEE80211_AUTH_TIMEOUT;
89afe614 4346 } else {
cb236d2d
JB		 4347 auth_data->timeout =
4348 round_jiffies_up(jiffies + IEEE80211_AUTH_TIMEOUT_LONG);
1672c0e3 4349 }
66e67e41 4350
407879b6
IP		 4351 auth_data->timeout_started = true;
4352 run_again(sdata, auth_data->timeout);
4353
66e67e41
JB		 4354 return 0;
4355}
4356
4357static int ieee80211_do_assoc(struct ieee80211_sub_if_data *sdata)
4358{
4359 struct ieee80211_mgd_assoc_data *assoc_data = sdata->u.mgd.assoc_data;
4360 struct ieee80211_local *local = sdata->local;
4361
8d61ffa5 4362 sdata_assert_lock(sdata);
66e67e41 4363
66e67e41
JB		 4364 assoc_data->tries++;
4365 if (assoc_data->tries > IEEE80211_ASSOC_MAX_TRIES) {
bdcbd8e0
JB		 4366 sdata_info(sdata, "association with %pM timed out\n",
4367 assoc_data->bss->bssid);
66e67e41
JB		 4368
4369 /*
4370 * Most likely AP is not in the range so remove the
4371 * bss struct for that AP.
4372 */
4373 cfg80211_unlink_bss(local->hw.wiphy, assoc_data->bss);
4374
4375 return -ETIMEDOUT;
4376 }
4377
bdcbd8e0
JB		 4378 sdata_info(sdata, "associate with %pM (try %d/%d)\n",
4379 assoc_data->bss->bssid, assoc_data->tries,
4380 IEEE80211_ASSOC_MAX_TRIES);
66e67e41
JB		 4381 ieee80211_send_assoc(sdata);
4382
30686bf7 4383 if (!ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) {
1672c0e3 4384 assoc_data->timeout = jiffies + IEEE80211_ASSOC_TIMEOUT;
89afe614 4385 assoc_data->timeout_started = true;
8d61ffa5 4386 run_again(sdata, assoc_data->timeout);
89afe614 4387 } else {
cb236d2d
JB		 4388 assoc_data->timeout =
4389 round_jiffies_up(jiffies +
4390 IEEE80211_ASSOC_TIMEOUT_LONG);
4391 assoc_data->timeout_started = true;
4392 run_again(sdata, assoc_data->timeout);
1672c0e3 4393 }
66e67e41
JB		 4394
4395 return 0;
4396}
4397
1672c0e3
JB		 4398void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata,
4399 __le16 fc, bool acked)
4400{
4401 struct ieee80211_local *local = sdata->local;
4402
4403 sdata->u.mgd.status_fc = fc;
4404 sdata->u.mgd.status_acked = acked;
4405 sdata->u.mgd.status_received = true;
4406
4407 ieee80211_queue_work(&local->hw, &sdata->work);
4408}
4409
1fa57d01 4410void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata)
9c6bd790 4411{
9c6bd790 4412 struct ieee80211_local *local = sdata->local;
1fa57d01 4413 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
9c6bd790 4414
8d61ffa5 4415 sdata_lock(sdata);
77fdaa12 4416
1672c0e3
JB		 4417 if (ifmgd->status_received) {
4418 __le16 fc = ifmgd->status_fc;
4419 bool status_acked = ifmgd->status_acked;
4420
4421 ifmgd->status_received = false;
46cad4b7 4422 if (ifmgd->auth_data && ieee80211_is_auth(fc)) {
1672c0e3 4423 if (status_acked) {
407879b6
IP		 4424 if (ifmgd->auth_data->algorithm ==
4425 WLAN_AUTH_SAE)
4426 ifmgd->auth_data->timeout =
4427 jiffies +
4428 IEEE80211_AUTH_TIMEOUT_SAE;
4429 else
4430 ifmgd->auth_data->timeout =
4431 jiffies +
4432 IEEE80211_AUTH_TIMEOUT_SHORT;
8d61ffa5 4433 run_again(sdata, ifmgd->auth_data->timeout);
1672c0e3
JB		 4434 } else {
4435 ifmgd->auth_data->timeout = jiffies - 1;
4436 }
89afe614 4437 ifmgd->auth_data->timeout_started = true;
1672c0e3
JB		 4438 } else if (ifmgd->assoc_data &&
4439 (ieee80211_is_assoc_req(fc) ||
4440 ieee80211_is_reassoc_req(fc))) {
4441 if (status_acked) {
4442 ifmgd->assoc_data->timeout =
4443 jiffies + IEEE80211_ASSOC_TIMEOUT_SHORT;
8d61ffa5 4444 run_again(sdata, ifmgd->assoc_data->timeout);
1672c0e3
JB		 4445 } else {
4446 ifmgd->assoc_data->timeout = jiffies - 1;
4447 }
89afe614 4448 ifmgd->assoc_data->timeout_started = true;
1672c0e3
JB		 4449 }
4450 }
4451
89afe614 4452 if (ifmgd->auth_data && ifmgd->auth_data->timeout_started &&
66e67e41
JB		 4453 time_after(jiffies, ifmgd->auth_data->timeout)) {
4454 if (ifmgd->auth_data->done) {
4455 /*
4456 * ok ... we waited for assoc but userspace didn't,
4457 * so let's just kill the auth data
4458 */
4459 ieee80211_destroy_auth_data(sdata, false);
46cad4b7 4460 } else if (ieee80211_auth(sdata)) {
66e67e41 4461 u8 bssid[ETH_ALEN];
a9409093
EG		 4462 struct ieee80211_event event = {
4463 .type = MLME_EVENT,
4464 .u.mlme.data = AUTH_EVENT,
4465 .u.mlme.status = MLME_TIMEOUT,
4466 };
66e67e41
JB		 4467
4468 memcpy(bssid, ifmgd->auth_data->bss->bssid, ETH_ALEN);
4469
4470 ieee80211_destroy_auth_data(sdata, false);
4471
6ff57cf8 4472 cfg80211_auth_timeout(sdata->dev, bssid);
a9409093 4473 drv_event_callback(sdata->local, sdata, &event);
66e67e41 4474 }
89afe614 4475 } else if (ifmgd->auth_data && ifmgd->auth_data->timeout_started)
8d61ffa5 4476 run_again(sdata, ifmgd->auth_data->timeout);
66e67e41 4477
89afe614 4478 if (ifmgd->assoc_data && ifmgd->assoc_data->timeout_started &&
66e67e41 4479 time_after(jiffies, ifmgd->assoc_data->timeout)) {
989c6505 4480 if ((ifmgd->assoc_data->need_beacon && !ifmgd->have_beacon) ||
66e67e41 4481 ieee80211_do_assoc(sdata)) {
959867fa 4482 struct cfg80211_bss *bss = ifmgd->assoc_data->bss;
d0d1a12f
EG		 4483 struct ieee80211_event event = {
4484 .type = MLME_EVENT,
4485 .u.mlme.data = ASSOC_EVENT,
4486 .u.mlme.status = MLME_TIMEOUT,
4487 };
66e67e41 4488
e6f462df 4489 ieee80211_destroy_assoc_data(sdata, false, false);
959867fa 4490 cfg80211_assoc_timeout(sdata->dev, bss);
d0d1a12f 4491 drv_event_callback(sdata->local, sdata, &event);
66e67e41 4492 }
89afe614 4493 } else if (ifmgd->assoc_data && ifmgd->assoc_data->timeout_started)
8d61ffa5 4494 run_again(sdata, ifmgd->assoc_data->timeout);
66e67e41 4495
392b9ffb 4496 if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL &&
b291ba11 4497 ifmgd->associated) {
a43abf29 4498 u8 bssid[ETH_ALEN];
72a8a3ed 4499 int max_tries;
a43abf29 4500
0c1ad2ca 4501 memcpy(bssid, ifmgd->associated->bssid, ETH_ALEN);
4e5ff376 4502
30686bf7 4503 if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS))
180205bd 4504 max_tries = max_nullfunc_tries;
72a8a3ed 4505 else
180205bd 4506 max_tries = max_probe_tries;
72a8a3ed 4507
4e5ff376
FF		 4508 /* ACK received for nullfunc probing frame */
4509 if (!ifmgd->probe_send_count)
4510 ieee80211_reset_ap_probe(sdata);
04ac3c0e
FF		 4511 else if (ifmgd->nullfunc_failed) {
4512 if (ifmgd->probe_send_count < max_tries) {
bdcbd8e0
JB		 4513 mlme_dbg(sdata,
4514 "No ack for nullfunc frame to AP %pM, try %d/%i\n",
4515 bssid, ifmgd->probe_send_count,
4516 max_tries);
04ac3c0e
FF		 4517 ieee80211_mgd_probe_ap_send(sdata);
4518 } else {
bdcbd8e0
JB		 4519 mlme_dbg(sdata,
4520 "No ack for nullfunc frame to AP %pM, disconnecting.\n",
4521 bssid);
95acac61 4522 ieee80211_sta_connection_lost(sdata, bssid,
6b684db1
JB		 4523 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY,
4524 false);
04ac3c0e
FF		 4525 }
4526 } else if (time_is_after_jiffies(ifmgd->probe_timeout))
8d61ffa5 4527 run_again(sdata, ifmgd->probe_timeout);
30686bf7 4528 else if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) {
bdcbd8e0
JB		 4529 mlme_dbg(sdata,
4530 "Failed to send nullfunc to AP %pM after %dms, disconnecting\n",
4531 bssid, probe_wait_ms);
95acac61 4532 ieee80211_sta_connection_lost(sdata, bssid,
6b684db1 4533 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, false);
04ac3c0e 4534 } else if (ifmgd->probe_send_count < max_tries) {
bdcbd8e0
JB		 4535 mlme_dbg(sdata,
4536 "No probe response from AP %pM after %dms, try %d/%i\n",
4537 bssid, probe_wait_ms,
4538 ifmgd->probe_send_count, max_tries);
a43abf29
ML		 4539 ieee80211_mgd_probe_ap_send(sdata);
4540 } else {
b291ba11
JB		 4541 /*
4542 * We actually lost the connection ... or did we?
4543 * Let's make sure!
4544 */
89f774e6
JB		 4545 mlme_dbg(sdata,
4546 "No probe response from AP %pM after %dms, disconnecting.\n",
4547 bssid, probe_wait_ms);
04ac3c0e 4548
95acac61 4549 ieee80211_sta_connection_lost(sdata, bssid,
6b684db1 4550 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, false);
b291ba11
JB		 4551 }
4552 }
4553
8d61ffa5 4554 sdata_unlock(sdata);
f0706e82
JB		 4555}
4556
34f11cd3 4557static void ieee80211_sta_bcn_mon_timer(struct timer_list *t)
b291ba11
JB		 4558{
4559 struct ieee80211_sub_if_data *sdata =
34f11cd3 4560 from_timer(sdata, t, u.mgd.bcn_mon_timer);
0c21e632 4561 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
b291ba11 4562
0c21e632 4563 if (sdata->vif.csa_active && !ifmgd->csa_waiting_bcn)
e5593f56
MK		 4564 return;
4565
0b91111f
LP		 4566 if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER)
4567 return;
4568
682bd38b 4569 sdata->u.mgd.connection_loss = false;
1e4dcd01
JO		 4570 ieee80211_queue_work(&sdata->local->hw,
4571 &sdata->u.mgd.beacon_connection_loss_work);
b291ba11
JB		 4572}
4573
34f11cd3 4574static void ieee80211_sta_conn_mon_timer(struct timer_list *t)
b291ba11
JB		 4575{
4576 struct ieee80211_sub_if_data *sdata =
34f11cd3 4577 from_timer(sdata, t, u.mgd.conn_mon_timer);
b291ba11
JB		 4578 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4579 struct ieee80211_local *local = sdata->local;
4580
0c21e632 4581 if (sdata->vif.csa_active && !ifmgd->csa_waiting_bcn)
e5593f56
MK		 4582 return;
4583
42935eca 4584 ieee80211_queue_work(&local->hw, &ifmgd->monitor_work);
b291ba11
JB		 4585}
4586
4587static void ieee80211_sta_monitor_work(struct work_struct *work)
4588{
4589 struct ieee80211_sub_if_data *sdata =
4590 container_of(work, struct ieee80211_sub_if_data,
4591 u.mgd.monitor_work);
4592
4593 ieee80211_mgd_probe_ap(sdata, false);
4594}
4595
9c6bd790
JB		 4596static void ieee80211_restart_sta_timer(struct ieee80211_sub_if_data *sdata)
4597{
ad935687 4598 if (sdata->vif.type == NL80211_IFTYPE_STATION) {
925e64c3 4599 __ieee80211_stop_poll(sdata);
ad935687 4600
b291ba11 4601 /* let's probe the connection once */
30686bf7 4602 if (!ieee80211_hw_check(&sdata->local->hw, CONNECTION_MONITOR))
494f1fe5
EP		 4603 ieee80211_queue_work(&sdata->local->hw,
4604 &sdata->u.mgd.monitor_work);
ad935687 4605 }
9c6bd790 4606}
f0706e82 4607
b8360ab8 4608#ifdef CONFIG_PM
1a1cb744
JB		 4609void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata)
4610{
4611 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4612 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
4613
4614 sdata_lock(sdata);
4615
c52666ae
EG		 4616 if (ifmgd->auth_data || ifmgd->assoc_data) {
4617 const u8 *bssid = ifmgd->auth_data ?
4618 ifmgd->auth_data->bss->bssid :
4619 ifmgd->assoc_data->bss->bssid;
4620
1a1cb744 4621 /*
c52666ae
EG		 4622 * If we are trying to authenticate / associate while suspending,
4623 * cfg80211 won't know and won't actually abort those attempts,
4624 * thus we need to do that ourselves.
1a1cb744 4625 */
4b08d1b6 4626 ieee80211_send_deauth_disassoc(sdata, bssid, bssid,
1a1cb744
JB		 4627 IEEE80211_STYPE_DEAUTH,
4628 WLAN_REASON_DEAUTH_LEAVING,
4629 false, frame_buf);
c52666ae 4630 if (ifmgd->assoc_data)
e6f462df 4631 ieee80211_destroy_assoc_data(sdata, false, true);
c52666ae
EG		 4632 if (ifmgd->auth_data)
4633 ieee80211_destroy_auth_data(sdata, false);
1a1cb744
JB		 4634 cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf,
4635 IEEE80211_DEAUTH_FRAME_LEN);
4636 }
4637
be72afe0
JB		 4638 /* This is a bit of a hack - we should find a better and more generic
4639 * solution to this. Normally when suspending, cfg80211 will in fact
4640 * deauthenticate. However, it doesn't (and cannot) stop an ongoing
4641 * auth (not so important) or assoc (this is the problem) process.
4642 *
4643 * As a consequence, it can happen that we are in the process of both
4644 * associating and suspending, and receive an association response
4645 * after cfg80211 has checked if it needs to disconnect, but before
4646 * we actually set the flag to drop incoming frames. This will then
4647 * cause the workqueue flush to process the association response in
4648 * the suspend, resulting in a successful association just before it
4649 * tries to remove the interface from the driver, which now though
4650 * has a channel context assigned ... this results in issues.
4651 *
4652 * To work around this (for now) simply deauth here again if we're
4653 * now connected.
4654 */
4655 if (ifmgd->associated && !sdata->local->wowlan) {
4656 u8 bssid[ETH_ALEN];
4657 struct cfg80211_deauth_request req = {
4658 .reason_code = WLAN_REASON_DEAUTH_LEAVING,
4659 .bssid = bssid,
4660 };
4661
4662 memcpy(bssid, ifmgd->associated->bssid, ETH_ALEN);
4663 ieee80211_mgd_deauth(sdata, &req);
4664 }
4665
1a1cb744
JB		 4666 sdata_unlock(sdata);
4667}
4668
b8360ab8
JB		 4669void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata)
4670{
4671 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4672
8d61ffa5 4673 sdata_lock(sdata);
b8360ab8 4674 if (!ifmgd->associated) {
8d61ffa5 4675 sdata_unlock(sdata);
b8360ab8
JB		 4676 return;
4677 }
4678
4679 if (sdata->flags & IEEE80211_SDATA_DISCONNECT_RESUME) {
4680 sdata->flags &= ~IEEE80211_SDATA_DISCONNECT_RESUME;
4681 mlme_dbg(sdata, "driver requested disconnect after resume\n");
4682 ieee80211_sta_connection_lost(sdata,
4683 ifmgd->associated->bssid,
4684 WLAN_REASON_UNSPECIFIED,
4685 true);
8d61ffa5 4686 sdata_unlock(sdata);
b8360ab8
JB		 4687 return;
4688 }
8d61ffa5 4689 sdata_unlock(sdata);
b8360ab8
JB		 4690}
4691#endif
4692
9c6bd790
JB		 4693/* interface setup */
4694void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata)
f0706e82 4695{
46900298 4696 struct ieee80211_if_managed *ifmgd;
988c0f72 4697
46900298 4698 ifmgd = &sdata->u.mgd;
b291ba11 4699 INIT_WORK(&ifmgd->monitor_work, ieee80211_sta_monitor_work);
46900298 4700 INIT_WORK(&ifmgd->chswitch_work, ieee80211_chswitch_work);
1e4dcd01
JO		 4701 INIT_WORK(&ifmgd->beacon_connection_loss_work,
4702 ieee80211_beacon_connection_loss_work);
882a7c69
JB		 4703 INIT_WORK(&ifmgd->csa_connection_drop_work,
4704 ieee80211_csa_connection_drop_work);
687da132 4705 INIT_WORK(&ifmgd->request_smps_work, ieee80211_request_smps_mgd_work);
81dd2b88
AN		 4706 INIT_DELAYED_WORK(&ifmgd->tdls_peer_del_work,
4707 ieee80211_tdls_peer_del_work);
34f11cd3
KC		 4708 timer_setup(&ifmgd->timer, ieee80211_sta_timer, 0);
4709 timer_setup(&ifmgd->bcn_mon_timer, ieee80211_sta_bcn_mon_timer, 0);
4710 timer_setup(&ifmgd->conn_mon_timer, ieee80211_sta_conn_mon_timer, 0);
4711 timer_setup(&ifmgd->chswitch_timer, ieee80211_chswitch_timer, 0);
02219b3a
JB		 4712 INIT_DELAYED_WORK(&ifmgd->tx_tspec_wk,
4713 ieee80211_sta_handle_tspec_ac_params_wk);
9c6bd790 4714
ab1faead 4715 ifmgd->flags = 0;
1478acb3 4716 ifmgd->powersave = sdata->wdev.ps;
219c3867
AB		 4717 ifmgd->uapsd_queues = sdata->local->hw.uapsd_queues;
4718 ifmgd->uapsd_max_sp_len = sdata->local->hw.uapsd_max_sp_len;
67baf663 4719 ifmgd->p2p_noa_index = -1;
bbbdff9e 4720
0d8614b4 4721 if (sdata->local->hw.wiphy->features & NL80211_FEATURE_DYNAMIC_SMPS)
0f78231b
JB		 4722 ifmgd->req_smps = IEEE80211_SMPS_AUTOMATIC;
4723 else
4724 ifmgd->req_smps = IEEE80211_SMPS_OFF;
1277b4a9
LK		 4725
4726 /* Setup TDLS data */
4727 spin_lock_init(&ifmgd->teardown_lock);
4728 ifmgd->teardown_skb = NULL;
4729 ifmgd->orig_teardown_skb = NULL;
f0706e82
JB		 4730}
4731
77fdaa12
JB		 4732/* scan finished notification */
4733void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local)
60f8b39c 4734{
31ee67a1 4735 struct ieee80211_sub_if_data *sdata;
60f8b39c 4736
77fdaa12
JB		 4737 /* Restart STA timers */
4738 rcu_read_lock();
370bd005
BG		 4739 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
4740 if (ieee80211_sdata_running(sdata))
4741 ieee80211_restart_sta_timer(sdata);
4742 }
77fdaa12
JB		 4743 rcu_read_unlock();
4744}
60f8b39c 4745
f2d9d270
JB		 4746static u8 ieee80211_ht_vht_rx_chains(struct ieee80211_sub_if_data *sdata,
4747 struct cfg80211_bss *cbss)
4748{
4749 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4750 const u8 *ht_cap_ie, *vht_cap_ie;
4751 const struct ieee80211_ht_cap *ht_cap;
4752 const struct ieee80211_vht_cap *vht_cap;
4753 u8 chains = 1;
4754
4755 if (ifmgd->flags & IEEE80211_STA_DISABLE_HT)
4756 return chains;
4757
9caf0364 4758 ht_cap_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_HT_CAPABILITY);
f2d9d270
JB		 4759 if (ht_cap_ie && ht_cap_ie[1] >= sizeof(*ht_cap)) {
4760 ht_cap = (void *)(ht_cap_ie + 2);
4761 chains = ieee80211_mcs_to_chains(&ht_cap->mcs);
4762 /*
4763 * TODO: use "Tx Maximum Number Spatial Streams Supported" and
4764 * "Tx Unequal Modulation Supported" fields.
4765 */
4766 }
4767
4768 if (ifmgd->flags & IEEE80211_STA_DISABLE_VHT)
4769 return chains;
4770
9caf0364 4771 vht_cap_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_VHT_CAPABILITY);
f2d9d270
JB		 4772 if (vht_cap_ie && vht_cap_ie[1] >= sizeof(*vht_cap)) {
4773 u8 nss;
4774 u16 tx_mcs_map;
4775
4776 vht_cap = (void *)(vht_cap_ie + 2);
4777 tx_mcs_map = le16_to_cpu(vht_cap->supp_mcs.tx_mcs_map);
4778 for (nss = 8; nss > 0; nss--) {
4779 if (((tx_mcs_map >> (2 * (nss - 1))) & 3) !=
4780 IEEE80211_VHT_MCS_NOT_SUPPORTED)
4781 break;
4782 }
4783 /* TODO: use "Tx Highest Supported Long GI Data Rate" field? */
4784 chains = max(chains, nss);
4785 }
4786
4787 return chains;
4788}
4789
41cbb0f5
LC		 4790static bool
4791ieee80211_verify_sta_he_mcs_support(struct ieee80211_supported_band *sband,
4792 const struct ieee80211_he_operation *he_op)
4793{
4794 const struct ieee80211_sta_he_cap *sta_he_cap =
4795 ieee80211_get_he_sta_cap(sband);
47aa7861 4796 u16 ap_min_req_set;
41cbb0f5
LC		 4797 int i;
4798
4799 if (!sta_he_cap || !he_op)
4800 return false;
4801
47aa7861
GS		 4802 ap_min_req_set = le16_to_cpu(he_op->he_mcs_nss_set);
4803
41cbb0f5
LC		 4804 /* Need to go over for 80MHz, 160MHz and for 80+80 */
4805 for (i = 0; i < 3; i++) {
4806 const struct ieee80211_he_mcs_nss_supp *sta_mcs_nss_supp =
4807 &sta_he_cap->he_mcs_nss_supp;
4808 u16 sta_mcs_map_rx =
4809 le16_to_cpu(((__le16 *)sta_mcs_nss_supp)[2 * i]);
4810 u16 sta_mcs_map_tx =
4811 le16_to_cpu(((__le16 *)sta_mcs_nss_supp)[2 * i + 1]);
4812 u8 nss;
4813 bool verified = true;
4814
4815 /*
4816 * For each band there is a maximum of 8 spatial streams
4817 * possible. Each of the sta_mcs_map_* is a 16-bit struct built
4818 * of 2 bits per NSS (1-8), with the values defined in enum
4819 * ieee80211_he_mcs_support. Need to make sure STA TX and RX
4820 * capabilities aren't less than the AP's minimum requirements
4821 * for this HE BSS per SS.
4822 * It is enough to find one such band that meets the reqs.
4823 */
4824 for (nss = 8; nss > 0; nss--) {
4825 u8 sta_rx_val = (sta_mcs_map_rx >> (2 * (nss - 1))) & 3;
4826 u8 sta_tx_val = (sta_mcs_map_tx >> (2 * (nss - 1))) & 3;
4827 u8 ap_val = (ap_min_req_set >> (2 * (nss - 1))) & 3;
4828
4829 if (ap_val == IEEE80211_HE_MCS_NOT_SUPPORTED)
4830 continue;
4831
4832 /*
4833 * Make sure the HE AP doesn't require MCSs that aren't
4834 * supported by the client
4835 */
4836 if (sta_rx_val == IEEE80211_HE_MCS_NOT_SUPPORTED ||
4837 sta_tx_val == IEEE80211_HE_MCS_NOT_SUPPORTED ||
4838 (ap_val > sta_rx_val) || (ap_val > sta_tx_val)) {
4839 verified = false;
4840 break;
4841 }
4842 }
4843
4844 if (verified)
4845 return true;
4846 }
4847
4848 /* If here, STA doesn't meet AP's HE min requirements */
4849 return false;
4850}
4851
b17166a7
JB		 4852static int ieee80211_prep_channel(struct ieee80211_sub_if_data *sdata,
4853 struct cfg80211_bss *cbss)
a1cf775d
JB		 4854{
4855 struct ieee80211_local *local = sdata->local;
4856 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
53b954ee 4857 const struct ieee80211_ht_cap *ht_cap = NULL;
24398e39 4858 const struct ieee80211_ht_operation *ht_oper = NULL;
f2d9d270 4859 const struct ieee80211_vht_operation *vht_oper = NULL;
41cbb0f5 4860 const struct ieee80211_he_operation *he_oper = NULL;
24398e39 4861 struct ieee80211_supported_band *sband;
4bf88530 4862 struct cfg80211_chan_def chandef;
57fa5e85 4863 bool is_6ghz = cbss->channel->band == NL80211_BAND_6GHZ;
2a333a0d 4864 struct ieee80211_bss *bss = (void *)cbss->priv;
f2d9d270 4865 int ret;
52a45f38
AN		 4866 u32 i;
4867 bool have_80mhz;
a1cf775d 4868
24398e39
JB		 4869 sband = local->hw.wiphy->bands[cbss->channel->band];
4870
f2d9d270
JB		 4871 ifmgd->flags &= ~(IEEE80211_STA_DISABLE_40MHZ |
4872 IEEE80211_STA_DISABLE_80P80MHZ |
4873 IEEE80211_STA_DISABLE_160MHZ);
4874
75e296e9 4875 /* disable HT/VHT/HE if we don't support them */
57fa5e85 4876 if (!sband->ht_cap.ht_supported && !is_6ghz) {
75e296e9
JB		 4877 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
4878 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
4879 ifmgd->flags |= IEEE80211_STA_DISABLE_HE;
4880 }
4881
57fa5e85 4882 if (!sband->vht_cap.vht_supported && !is_6ghz) {
75e296e9 4883 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
57fa5e85
JB		 4884 ifmgd->flags |= IEEE80211_STA_DISABLE_HE;
4885 }
75e296e9
JB		 4886
4887 if (!ieee80211_get_he_sta_cap(sband))
4888 ifmgd->flags |= IEEE80211_STA_DISABLE_HE;
4889
9caf0364
JB		 4890 rcu_read_lock();
4891
57fa5e85 4892 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT) && !is_6ghz) {
53b954ee 4893 const u8 *ht_oper_ie, *ht_cap_ie;
24398e39 4894
9caf0364 4895 ht_oper_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_HT_OPERATION);
24398e39
JB		 4896 if (ht_oper_ie && ht_oper_ie[1] >= sizeof(*ht_oper))
4897 ht_oper = (void *)(ht_oper_ie + 2);
08e6effa 4898
53b954ee
EP		 4899 ht_cap_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_HT_CAPABILITY);
4900 if (ht_cap_ie && ht_cap_ie[1] >= sizeof(*ht_cap))
4901 ht_cap = (void *)(ht_cap_ie + 2);
4902
4903 if (!ht_cap) {
08e6effa
JB		 4904 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
4905 ht_oper = NULL;
4906 }
24398e39
JB		 4907 }
4908
57fa5e85 4909 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) && !is_6ghz) {
08e6effa 4910 const u8 *vht_oper_ie, *vht_cap;
f2d9d270 4911
9caf0364
JB		 4912 vht_oper_ie = ieee80211_bss_get_ie(cbss,
4913 WLAN_EID_VHT_OPERATION);
f2d9d270
JB		 4914 if (vht_oper_ie && vht_oper_ie[1] >= sizeof(*vht_oper))
4915 vht_oper = (void *)(vht_oper_ie + 2);
4916 if (vht_oper && !ht_oper) {
4917 vht_oper = NULL;
bdcbd8e0 4918 sdata_info(sdata,
75e296e9 4919 "AP advertised VHT without HT, disabling HT/VHT/HE\n");
cb145022
JB		 4920 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
4921 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
75e296e9 4922 ifmgd->flags |= IEEE80211_STA_DISABLE_HE;
24398e39 4923 }
08e6effa
JB		 4924
4925 vht_cap = ieee80211_bss_get_ie(cbss, WLAN_EID_VHT_CAPABILITY);
4926 if (!vht_cap || vht_cap[1] < sizeof(struct ieee80211_vht_cap)) {
4927 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
4928 vht_oper = NULL;
4929 }
24398e39
JB		 4930 }
4931
002245ec 4932 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HE)) {
41cbb0f5
LC		 4933 const struct cfg80211_bss_ies *ies;
4934 const u8 *he_oper_ie;
4935
4936 ies = rcu_dereference(cbss->ies);
4937 he_oper_ie = cfg80211_find_ext_ie(WLAN_EID_EXT_HE_OPERATION,
4938 ies->data, ies->len);
4939 if (he_oper_ie &&
4940 he_oper_ie[1] == ieee80211_he_oper_size(&he_oper_ie[3]))
4941 he_oper = (void *)(he_oper_ie + 3);
4942 else
4943 he_oper = NULL;
4944
f0c0407d 4945 if (!ieee80211_verify_sta_he_mcs_support(sband, he_oper))
41cbb0f5
LC		 4946 ifmgd->flags |= IEEE80211_STA_DISABLE_HE;
4947 }
4948
52a45f38
AN		 4949 /* Allow VHT if at least one channel on the sband supports 80 MHz */
4950 have_80mhz = false;
4951 for (i = 0; i < sband->n_channels; i++) {
4952 if (sband->channels[i].flags & (IEEE80211_CHAN_DISABLED |
4953 IEEE80211_CHAN_NO_80MHZ))
4954 continue;
4955
4956 have_80mhz = true;
4957 break;
4958 }
4959
4960 if (!have_80mhz)
4961 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
4962
f2d9d270
JB		 4963 ifmgd->flags |= ieee80211_determine_chantype(sdata, sband,
4964 cbss->channel,
2a333a0d 4965 bss->vht_cap_info,
41cbb0f5 4966 ht_oper, vht_oper, he_oper,
5cdaed1e 4967 &chandef, false);
04ecd257 4968
f2d9d270
JB		 4969 sdata->needed_rx_chains = min(ieee80211_ht_vht_rx_chains(sdata, cbss),
4970 local->rx_chains);
24398e39 4971
9caf0364
JB		 4972 rcu_read_unlock();
4973
57fa5e85
JB		 4974 if (ifmgd->flags & IEEE80211_STA_DISABLE_HE && is_6ghz) {
4975 sdata_info(sdata, "Rejecting non-HE 6/7 GHz connection");
4976 return -EINVAL;
4977 }
4978
04ecd257
JB		 4979 /* will change later if needed */
4980 sdata->smps_mode = IEEE80211_SMPS_OFF;
4981
34a3740d 4982 mutex_lock(&local->mtx);
f2d9d270
JB		 4983 /*
4984 * If this fails (possibly due to channel context sharing
4985 * on incompatible channels, e.g. 80+80 and 160 sharing the
4986 * same control channel) try to use a smaller bandwidth.
4987 */
4988 ret = ieee80211_vif_use_channel(sdata, &chandef,
4989 IEEE80211_CHANCTX_SHARED);
0418a445
SW		 4990
4991 /* don't downgrade for 5 and 10 MHz channels, though. */
4992 if (chandef.width == NL80211_CHAN_WIDTH_5 ||
4993 chandef.width == NL80211_CHAN_WIDTH_10)
34a3740d 4994 goto out;
0418a445 4995
d601cd8d 4996 while (ret && chandef.width != NL80211_CHAN_WIDTH_20_NOHT) {
e6b7cde4 4997 ifmgd->flags |= ieee80211_chandef_downgrade(&chandef);
d601cd8d
JB		 4998 ret = ieee80211_vif_use_channel(sdata, &chandef,
4999 IEEE80211_CHANCTX_SHARED);
5000 }
34a3740d
JB		 5001 out:
5002 mutex_unlock(&local->mtx);
f2d9d270 5003 return ret;
b17166a7
JB		 5004}
5005
78ac51f8
SS		 5006static bool ieee80211_get_dtim(const struct cfg80211_bss_ies *ies,
5007 u8 *dtim_count, u8 *dtim_period)
5008{
5009 const u8 *tim_ie = cfg80211_find_ie(WLAN_EID_TIM, ies->data, ies->len);
5010 const u8 *idx_ie = cfg80211_find_ie(WLAN_EID_MULTI_BSSID_IDX, ies->data,
5011 ies->len);
5012 const struct ieee80211_tim_ie *tim = NULL;
5013 const struct ieee80211_bssid_index *idx;
5014 bool valid = tim_ie && tim_ie[1] >= 2;
5015
5016 if (valid)
5017 tim = (void *)(tim_ie + 2);
5018
5019 if (dtim_count)
5020 *dtim_count = valid ? tim->dtim_count : 0;
5021
5022 if (dtim_period)
5023 *dtim_period = valid ? tim->dtim_period : 0;
5024
5025 /* Check if value is overridden by non-transmitted profile */
5026 if (!idx_ie || idx_ie[1] < 3)
5027 return valid;
5028
5029 idx = (void *)(idx_ie + 2);
5030
5031 if (dtim_count)
5032 *dtim_count = idx->dtim_count;
5033
5034 if (dtim_period)
5035 *dtim_period = idx->dtim_period;
5036
5037 return true;
5038}
5039
b17166a7 5040static int ieee80211_prep_connection(struct ieee80211_sub_if_data *sdata,
c1041f10
CRI		 5041 struct cfg80211_bss *cbss, bool assoc,
5042 bool override)
b17166a7
JB		 5043{
5044 struct ieee80211_local *local = sdata->local;
5045 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
5046 struct ieee80211_bss *bss = (void *)cbss->priv;
5047 struct sta_info *new_sta = NULL;
179b8fc7 5048 struct ieee80211_supported_band *sband;
c1041f10 5049 bool have_sta = false;
b17166a7
JB		 5050 int err;
5051
179b8fc7
CRI		 5052 sband = local->hw.wiphy->bands[cbss->channel->band];
5053
b17166a7
JB		 5054 if (WARN_ON(!ifmgd->auth_data && !ifmgd->assoc_data))
5055 return -EINVAL;
5056
f8860ce8
LC		 5057 /* If a reconfig is happening, bail out */
5058 if (local->in_reconfig)
5059 return -EBUSY;
5060
b17166a7
JB		 5061 if (assoc) {
5062 rcu_read_lock();
5063 have_sta = sta_info_get(sdata, cbss->bssid);
5064 rcu_read_unlock();
5065 }
5066
5067 if (!have_sta) {
5068 new_sta = sta_info_alloc(sdata, cbss->bssid, GFP_KERNEL);
5069 if (!new_sta)
5070 return -ENOMEM;
5071 }
179b8fc7 5072
c87905be
JB		 5073 /*
5074 * Set up the information for the new channel before setting the
5075 * new channel. We can't - completely race-free - change the basic
5076 * rates bitmap and the channel (sband) that it refers to, but if
5077 * we set it up before we at least avoid calling into the driver's
5078 * bss_info_changed() method with invalid information (since we do
5079 * call that from changing the channel - only for IDLE and perhaps
5080 * some others, but ...).
5081 *
5082 * So to avoid that, just set up all the new information before the
5083 * channel, but tell the driver to apply it only afterwards, since
5084 * it might need the new channel for that.
5085 */
13e0c8e3 5086 if (new_sta) {
5d6a1b06
JB		 5087 u32 rates = 0, basic_rates = 0;
5088 bool have_higher_than_11mbit;
5089 int min_rate = INT_MAX, min_rate_index = -1;
8cef2c9d 5090 const struct cfg80211_bss_ies *ies;
179b8fc7 5091 int shift = ieee80211_vif_get_shift(&sdata->vif);
5d6a1b06 5092
5d6a1b06
JB		 5093 ieee80211_get_rates(sband, bss->supp_rates,
5094 bss->supp_rates_len,
5095 &rates, &basic_rates,
5096 &have_higher_than_11mbit,
2103dec1 5097 &min_rate, &min_rate_index,
44f6d42c 5098 shift);
5d6a1b06
JB		 5099
5100 /*
5101 * This used to be a workaround for basic rates missing
5102 * in the association response frame. Now that we no
5103 * longer use the basic rates from there, it probably
5104 * doesn't happen any more, but keep the workaround so
5105 * in case some *other* APs are buggy in different ways
5106 * we can connect -- with a warning.
302ff8b7
IP		 5107 * Allow this workaround only in case the AP provided at least
5108 * one rate.
5d6a1b06 5109 */
302ff8b7
IP		 5110 if (min_rate_index < 0) {
5111 sdata_info(sdata,
5112 "No legacy rates in association response\n");
5113
5114 sta_info_free(local, new_sta);
5115 return -EINVAL;
5116 } else if (!basic_rates) {
bdcbd8e0
JB		 5117 sdata_info(sdata,
5118 "No basic rates, using min rate instead\n");
5d6a1b06
JB		 5119 basic_rates = BIT(min_rate_index);
5120 }
5121
bd718fc1
JB		 5122 if (rates)
5123 new_sta->sta.supp_rates[cbss->channel->band] = rates;
5124 else
5125 sdata_info(sdata,
5126 "No rates found, keeping mandatory only\n");
5127
5d6a1b06
JB		 5128 sdata->vif.bss_conf.basic_rates = basic_rates;
5129
5130 /* cf. IEEE 802.11 9.2.12 */
57fbcce3 5131 if (cbss->channel->band == NL80211_BAND_2GHZ &&
5d6a1b06
JB		 5132 have_higher_than_11mbit)
5133 sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE;
5134 else
5135 sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE;
5136
5137 memcpy(ifmgd->bssid, cbss->bssid, ETH_ALEN);
5138
8c358bcd
JB		 5139 /* set timing information */
5140 sdata->vif.bss_conf.beacon_int = cbss->beacon_interval;
8cef2c9d 5141 rcu_read_lock();
ef429dad
JB		 5142 ies = rcu_dereference(cbss->beacon_ies);
5143 if (ies) {
ef429dad
JB		 5144 sdata->vif.bss_conf.sync_tsf = ies->tsf;
5145 sdata->vif.bss_conf.sync_device_ts =
5146 bss->device_ts_beacon;
78ac51f8
SS		 5147
5148 ieee80211_get_dtim(ies,
5149 &sdata->vif.bss_conf.sync_dtim_count,
5150 NULL);
30686bf7
JB		 5151 } else if (!ieee80211_hw_check(&sdata->local->hw,
5152 TIMING_BEACON_ONLY)) {
ef429dad
JB		 5153 ies = rcu_dereference(cbss->proberesp_ies);
5154 /* must be non-NULL since beacon IEs were NULL */
5155 sdata->vif.bss_conf.sync_tsf = ies->tsf;
5156 sdata->vif.bss_conf.sync_device_ts =
5157 bss->device_ts_presp;
5158 sdata->vif.bss_conf.sync_dtim_count = 0;
5159 } else {
5160 sdata->vif.bss_conf.sync_tsf = 0;
5161 sdata->vif.bss_conf.sync_device_ts = 0;
5162 sdata->vif.bss_conf.sync_dtim_count = 0;
5163 }
8cef2c9d 5164 rcu_read_unlock();
c87905be 5165 }
8c358bcd 5166
c87905be
JB		 5167 if (new_sta || override) {
5168 err = ieee80211_prep_channel(sdata, cbss);
5169 if (err) {
5170 if (new_sta)
5171 sta_info_free(local, new_sta);
5172 return -EINVAL;
5173 }
5174 }
5175
5176 if (new_sta) {
5177 /*
5178 * tell driver about BSSID, basic rates and timing
5179 * this was set up above, before setting the channel
5180 */
5d6a1b06 5181 ieee80211_bss_info_change_notify(sdata,
8c358bcd
JB		 5182 BSS_CHANGED_BSSID | BSS_CHANGED_BASIC_RATES |
5183 BSS_CHANGED_BEACON_INT);
a1cf775d
JB		 5184
5185 if (assoc)
13e0c8e3 5186 sta_info_pre_move_state(new_sta, IEEE80211_STA_AUTH);
a1cf775d 5187
13e0c8e3
JB		 5188 err = sta_info_insert(new_sta);
5189 new_sta = NULL;
a1cf775d 5190 if (err) {
bdcbd8e0
JB		 5191 sdata_info(sdata,
5192 "failed to insert STA entry for the AP (error %d)\n",
5193 err);
a1cf775d
JB		 5194 return err;
5195 }
5196 } else
b203ca39 5197 WARN_ON_ONCE(!ether_addr_equal(ifmgd->bssid, cbss->bssid));
a1cf775d 5198
7d830a19
DS		 5199 /* Cancel scan to ensure that nothing interferes with connection */
5200 if (local->scanning)
5201 ieee80211_scan_cancel(local);
5202
a1cf775d
JB		 5203 return 0;
5204}
5205
77fdaa12
JB		 5206/* config hooks */
5207int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
5208 struct cfg80211_auth_request *req)
9c6bd790 5209{
66e67e41
JB		 5210 struct ieee80211_local *local = sdata->local;
5211 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
5212 struct ieee80211_mgd_auth_data *auth_data;
77fdaa12 5213 u16 auth_alg;
66e67e41 5214 int err;
efb543e6 5215 bool cont_auth;
66e67e41
JB		 5216
5217 /* prepare auth data structure */
9c6bd790 5218
77fdaa12
JB		 5219 switch (req->auth_type) {
5220 case NL80211_AUTHTYPE_OPEN_SYSTEM:
5221 auth_alg = WLAN_AUTH_OPEN;
5222 break;
5223 case NL80211_AUTHTYPE_SHARED_KEY:
5fdb3735 5224 if (fips_enabled)
9dca9c49 5225 return -EOPNOTSUPP;
77fdaa12
JB		 5226 auth_alg = WLAN_AUTH_SHARED_KEY;
5227 break;
5228 case NL80211_AUTHTYPE_FT:
5229 auth_alg = WLAN_AUTH_FT;
5230 break;
5231 case NL80211_AUTHTYPE_NETWORK_EAP:
5232 auth_alg = WLAN_AUTH_LEAP;
5233 break;
6b8ece3a
JM		 5234 case NL80211_AUTHTYPE_SAE:
5235 auth_alg = WLAN_AUTH_SAE;
5236 break;
dbc0c2cb
JM		 5237 case NL80211_AUTHTYPE_FILS_SK:
5238 auth_alg = WLAN_AUTH_FILS_SK;
5239 break;
5240 case NL80211_AUTHTYPE_FILS_SK_PFS:
5241 auth_alg = WLAN_AUTH_FILS_SK_PFS;
5242 break;
5243 case NL80211_AUTHTYPE_FILS_PK:
5244 auth_alg = WLAN_AUTH_FILS_PK;
5245 break;
77fdaa12
JB		 5246 default:
5247 return -EOPNOTSUPP;
60f8b39c 5248 }
77fdaa12 5249
efb543e6 5250 if (ifmgd->assoc_data)
8d7432a2
JM		 5251 return -EBUSY;
5252
11b6b5a4 5253 auth_data = kzalloc(sizeof(*auth_data) + req->auth_data_len +
6b8ece3a 5254 req->ie_len, GFP_KERNEL);
66e67e41 5255 if (!auth_data)
9c6bd790 5256 return -ENOMEM;
77fdaa12 5257
66e67e41 5258 auth_data->bss = req->bss;
77fdaa12 5259
11b6b5a4 5260 if (req->auth_data_len >= 4) {
6ec63612
JM		 5261 if (req->auth_type == NL80211_AUTHTYPE_SAE) {
5262 __le16 *pos = (__le16 *) req->auth_data;
5263
5264 auth_data->sae_trans = le16_to_cpu(pos[0]);
5265 auth_data->sae_status = le16_to_cpu(pos[1]);
5266 }
11b6b5a4
JM		 5267 memcpy(auth_data->data, req->auth_data + 4,
5268 req->auth_data_len - 4);
5269 auth_data->data_len += req->auth_data_len - 4;
6b8ece3a
JM		 5270 }
5271
efb543e6
JM		 5272 /* Check if continuing authentication or trying to authenticate with the
5273 * same BSS that we were in the process of authenticating with and avoid
5274 * removal and re-addition of the STA entry in
5275 * ieee80211_prep_connection().
5276 */
5277 cont_auth = ifmgd->auth_data && req->bss == ifmgd->auth_data->bss;
5278
77fdaa12 5279 if (req->ie && req->ie_len) {
6b8ece3a
JM		 5280 memcpy(&auth_data->data[auth_data->data_len],
5281 req->ie, req->ie_len);
5282 auth_data->data_len += req->ie_len;
9c6bd790 5283 }
77fdaa12 5284
fffd0934 5285 if (req->key && req->key_len) {
66e67e41
JB		 5286 auth_data->key_len = req->key_len;
5287 auth_data->key_idx = req->key_idx;
5288 memcpy(auth_data->key, req->key, req->key_len);
fffd0934
JB		 5289 }
5290
66e67e41 5291 auth_data->algorithm = auth_alg;
60f8b39c 5292
66e67e41 5293 /* try to authenticate/probe */
2a33bee2 5294
efb543e6
JM		 5295 if (ifmgd->auth_data) {
5296 if (cont_auth && req->auth_type == NL80211_AUTHTYPE_SAE) {
5297 auth_data->peer_confirmed =
5298 ifmgd->auth_data->peer_confirmed;
5299 }
5300 ieee80211_destroy_auth_data(sdata, cont_auth);
5301 }
2a33bee2 5302
66e67e41
JB		 5303 /* prep auth_data so we don't go into idle on disassoc */
5304 ifmgd->auth_data = auth_data;
af6b6374 5305
efb543e6
JM		 5306 /* If this is continuation of an ongoing SAE authentication exchange
5307 * (i.e., request to send SAE Confirm) and the peer has already
5308 * confirmed, mark authentication completed since we are about to send
5309 * out SAE Confirm.
5310 */
5311 if (cont_auth && req->auth_type == NL80211_AUTHTYPE_SAE &&
5312 auth_data->peer_confirmed && auth_data->sae_trans == 2)
5313 ieee80211_mark_sta_auth(sdata, req->bss->bssid);
5314
7b119dc0
JB		 5315 if (ifmgd->associated) {
5316 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
5317
89f774e6
JB		 5318 sdata_info(sdata,
5319 "disconnect from AP %pM for new auth to %pM\n",
5320 ifmgd->associated->bssid, req->bss->bssid);
7b119dc0
JB		 5321 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
5322 WLAN_REASON_UNSPECIFIED,
5323 false, frame_buf);
5324
a90faa9d
EG		 5325 ieee80211_report_disconnect(sdata, frame_buf,
5326 sizeof(frame_buf), true,
5327 WLAN_REASON_UNSPECIFIED);
7b119dc0 5328 }
af6b6374 5329
bdcbd8e0 5330 sdata_info(sdata, "authenticate with %pM\n", req->bss->bssid);
e5b900d2 5331
efb543e6 5332 err = ieee80211_prep_connection(sdata, req->bss, cont_auth, false);
a1cf775d 5333 if (err)
66e67e41 5334 goto err_clear;
af6b6374 5335
46cad4b7 5336 err = ieee80211_auth(sdata);
66e67e41 5337 if (err) {
66e67e41
JB		 5338 sta_info_destroy_addr(sdata, req->bss->bssid);
5339 goto err_clear;
5340 }
5341
5342 /* hold our own reference */
5b112d3d 5343 cfg80211_ref_bss(local->hw.wiphy, auth_data->bss);
8d61ffa5 5344 return 0;
66e67e41
JB		 5345
5346 err_clear:
c84a67a2 5347 eth_zero_addr(ifmgd->bssid);
3d2abdfd 5348 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID);
66e67e41 5349 ifmgd->auth_data = NULL;
d01f858c
MK		 5350 mutex_lock(&sdata->local->mtx);
5351 ieee80211_vif_release_channel(sdata);
5352 mutex_unlock(&sdata->local->mtx);
66e67e41 5353 kfree(auth_data);
66e67e41 5354 return err;
af6b6374
JB		 5355}
5356
77fdaa12
JB		 5357int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
5358 struct cfg80211_assoc_request *req)
f0706e82 5359{
57fa5e85 5360 bool is_6ghz = req->bss->channel->band == NL80211_BAND_6GHZ;
66e67e41 5361 struct ieee80211_local *local = sdata->local;
77fdaa12 5362 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
0c1ad2ca 5363 struct ieee80211_bss *bss = (void *)req->bss->priv;
66e67e41 5364 struct ieee80211_mgd_assoc_data *assoc_data;
c65dd147 5365 const struct cfg80211_bss_ies *beacon_ies;
4e74bfdb 5366 struct ieee80211_supported_band *sband;
b08fbbd8 5367 const u8 *ssidie, *ht_ie, *vht_ie;
2a33bee2 5368 int i, err;
c1041f10 5369 bool override = false;
f0706e82 5370
66e67e41
JB		 5371 assoc_data = kzalloc(sizeof(*assoc_data) + req->ie_len, GFP_KERNEL);
5372 if (!assoc_data)
5373 return -ENOMEM;
5374
9caf0364
JB		 5375 rcu_read_lock();
5376 ssidie = ieee80211_bss_get_ie(req->bss, WLAN_EID_SSID);
4152561f 5377 if (!ssidie || ssidie[1] > sizeof(assoc_data->ssid)) {
9caf0364
JB		 5378 rcu_read_unlock();
5379 kfree(assoc_data);
5380 return -EINVAL;
5381 }
5382 memcpy(assoc_data->ssid, ssidie + 2, ssidie[1]);
5383 assoc_data->ssid_len = ssidie[1];
5384 rcu_read_unlock();
5385
7b119dc0
JB		 5386 if (ifmgd->associated) {
5387 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
5388
89f774e6
JB		 5389 sdata_info(sdata,
5390 "disconnect from AP %pM for new assoc to %pM\n",
5391 ifmgd->associated->bssid, req->bss->bssid);
7b119dc0
JB		 5392 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
5393 WLAN_REASON_UNSPECIFIED,
5394 false, frame_buf);
5395
a90faa9d
EG		 5396 ieee80211_report_disconnect(sdata, frame_buf,
5397 sizeof(frame_buf), true,
5398 WLAN_REASON_UNSPECIFIED);
7b119dc0 5399 }
66e67e41
JB		 5400
5401 if (ifmgd->auth_data && !ifmgd->auth_data->done) {
5402 err = -EBUSY;
5403 goto err_free;
af6b6374 5404 }
77fdaa12 5405
66e67e41
JB		 5406 if (ifmgd->assoc_data) {
5407 err = -EBUSY;
5408 goto err_free;
5409 }
77fdaa12 5410
66e67e41
JB		 5411 if (ifmgd->auth_data) {
5412 bool match;
5413
5414 /* keep sta info, bssid if matching */
b203ca39 5415 match = ether_addr_equal(ifmgd->bssid, req->bss->bssid);
66e67e41 5416 ieee80211_destroy_auth_data(sdata, match);
2a33bee2
GE		 5417 }
5418
66e67e41 5419 /* prepare assoc data */
095d81ce 5420
d8ec4433
JO		 5421 ifmgd->beacon_crc_valid = false;
5422
095d81ce
JB		 5423 assoc_data->wmm = bss->wmm_used &&
5424 (local->hw.queues >= IEEE80211_NUM_ACS);
095d81ce 5425
de5036aa
JB		 5426 /*
5427 * IEEE802.11n does not allow TKIP/WEP as pairwise ciphers in HT mode.
5428 * We still associate in non-HT mode (11a/b/g) if any one of these
5429 * ciphers is configured as pairwise.
5430 * We can set this to true for non-11n hardware, that'll be checked
5431 * separately along with the peer capabilities.
5432 */
1c4cb928 5433 for (i = 0; i < req->crypto.n_ciphers_pairwise; i++) {
77fdaa12
JB		 5434 if (req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_WEP40 ||
5435 req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_TKIP ||
1c4cb928 5436 req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_WEP104) {
a8243b72 5437 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
d545daba 5438 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
41cbb0f5 5439 ifmgd->flags |= IEEE80211_STA_DISABLE_HE;
1c4cb928 5440 netdev_info(sdata->dev,
54626324 5441 "disabling HT/VHT/HE due to WEP/TKIP use\n");
1c4cb928
JB		 5442 }
5443 }
77fdaa12 5444
4e74bfdb 5445 sband = local->hw.wiphy->bands[req->bss->channel->band];
4e74bfdb 5446
75e296e9
JB		 5447 /* also disable HT/VHT/HE if the AP doesn't use WMM */
5448 if (!bss->wmm_used) {
5449 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
d545daba 5450 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
75e296e9
JB		 5451 ifmgd->flags |= IEEE80211_STA_DISABLE_HE;
5452 netdev_info(sdata->dev,
5453 "disabling HT/VHT/HE as WMM/QoS is not supported by the AP\n");
d545daba
MP		 5454 }
5455
ef96a842
BG		 5456 memcpy(&ifmgd->ht_capa, &req->ht_capa, sizeof(ifmgd->ht_capa));
5457 memcpy(&ifmgd->ht_capa_mask, &req->ht_capa_mask,
5458 sizeof(ifmgd->ht_capa_mask));
5459
dd5ecfea
JB		 5460 memcpy(&ifmgd->vht_capa, &req->vht_capa, sizeof(ifmgd->vht_capa));
5461 memcpy(&ifmgd->vht_capa_mask, &req->vht_capa_mask,
5462 sizeof(ifmgd->vht_capa_mask));
5463
77fdaa12 5464 if (req->ie && req->ie_len) {
66e67e41
JB		 5465 memcpy(assoc_data->ie, req->ie, req->ie_len);
5466 assoc_data->ie_len = req->ie_len;
5467 }
f679f65d 5468
39404fee
JM		 5469 if (req->fils_kek) {
5470 /* should already be checked in cfg80211 - so warn */
5471 if (WARN_ON(req->fils_kek_len > FILS_MAX_KEK_LEN)) {
5472 err = -EINVAL;
5473 goto err_free;
5474 }
5475 memcpy(assoc_data->fils_kek, req->fils_kek,
5476 req->fils_kek_len);
5477 assoc_data->fils_kek_len = req->fils_kek_len;
5478 }
5479
5480 if (req->fils_nonces)
5481 memcpy(assoc_data->fils_nonces, req->fils_nonces,
5482 2 * FILS_NONCE_LEN);
5483
66e67e41 5484 assoc_data->bss = req->bss;
f679f65d 5485
af6b6374
JB		 5486 if (ifmgd->req_smps == IEEE80211_SMPS_AUTOMATIC) {
5487 if (ifmgd->powersave)
04ecd257 5488 sdata->smps_mode = IEEE80211_SMPS_DYNAMIC;
af6b6374 5489 else
04ecd257 5490 sdata->smps_mode = IEEE80211_SMPS_OFF;
af6b6374 5491 } else
04ecd257 5492 sdata->smps_mode = ifmgd->req_smps;
af6b6374 5493
66e67e41 5494 assoc_data->capability = req->bss->capability;
66e67e41
JB		 5495 assoc_data->supp_rates = bss->supp_rates;
5496 assoc_data->supp_rates_len = bss->supp_rates_len;
9dde6423 5497
9caf0364 5498 rcu_read_lock();
9dde6423
JB		 5499 ht_ie = ieee80211_bss_get_ie(req->bss, WLAN_EID_HT_OPERATION);
5500 if (ht_ie && ht_ie[1] >= sizeof(struct ieee80211_ht_operation))
5501 assoc_data->ap_ht_param =
5502 ((struct ieee80211_ht_operation *)(ht_ie + 2))->ht_param;
57fa5e85 5503 else if (!is_6ghz)
a8243b72 5504 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
b08fbbd8
JB		 5505 vht_ie = ieee80211_bss_get_ie(req->bss, WLAN_EID_VHT_CAPABILITY);
5506 if (vht_ie && vht_ie[1] >= sizeof(struct ieee80211_vht_cap))
5507 memcpy(&assoc_data->ap_vht_cap, vht_ie + 2,
5508 sizeof(struct ieee80211_vht_cap));
57fa5e85
JB		 5509 else if (!is_6ghz)
5510 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT |
5511 IEEE80211_STA_DISABLE_HE;
9caf0364 5512 rcu_read_unlock();
63f170e0 5513
848955cc 5514 if (WARN((sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_UAPSD) &&
30686bf7 5515 ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK),
848955cc
JB		 5516 "U-APSD not supported with HW_PS_NULLFUNC_STACK\n"))
5517 sdata->vif.driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
5518
ab13315a 5519 if (bss->wmm_used && bss->uapsd_supported &&
848955cc 5520 (sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_UAPSD)) {
76f0303d 5521 assoc_data->uapsd = true;
ab13315a
KV		 5522 ifmgd->flags |= IEEE80211_STA_UAPSD_ENABLED;
5523 } else {
76f0303d 5524 assoc_data->uapsd = false;
ab13315a
KV		 5525 ifmgd->flags &= ~IEEE80211_STA_UAPSD_ENABLED;
5526 }
5527
77fdaa12 5528 if (req->prev_bssid)
66e67e41 5529 memcpy(assoc_data->prev_bssid, req->prev_bssid, ETH_ALEN);
77fdaa12
JB		 5530
5531 if (req->use_mfp) {
5532 ifmgd->mfp = IEEE80211_MFP_REQUIRED;
5533 ifmgd->flags |= IEEE80211_STA_MFP_ENABLED;
5534 } else {
5535 ifmgd->mfp = IEEE80211_MFP_DISABLED;
5536 ifmgd->flags &= ~IEEE80211_STA_MFP_ENABLED;
5537 }
5538
cd2f5dd7
AK		 5539 if (req->flags & ASSOC_REQ_USE_RRM)
5540 ifmgd->flags |= IEEE80211_STA_ENABLE_RRM;
5541 else
5542 ifmgd->flags &= ~IEEE80211_STA_ENABLE_RRM;
5543
77fdaa12
JB		 5544 if (req->crypto.control_port)
5545 ifmgd->flags |= IEEE80211_STA_CONTROL_PORT;
5546 else
5547 ifmgd->flags &= ~IEEE80211_STA_CONTROL_PORT;
5548
a621fa4d
JB		 5549 sdata->control_port_protocol = req->crypto.control_port_ethertype;
5550 sdata->control_port_no_encrypt = req->crypto.control_port_no_encrypt;
018f6fbf
DK		 5551 sdata->control_port_over_nl80211 =
5552 req->crypto.control_port_over_nl80211;
7f3f96ce 5553 sdata->control_port_no_preauth = req->crypto.control_port_no_preauth;
2475b1cc
MS		 5554 sdata->encrypt_headroom = ieee80211_cs_headroom(local, &req->crypto,
5555 sdata->vif.type);
a621fa4d 5556
66e67e41
JB		 5557 /* kick off associate process */
5558
5559 ifmgd->assoc_data = assoc_data;
826262c3 5560 ifmgd->dtim_period = 0;
989c6505 5561 ifmgd->have_beacon = false;
66e67e41 5562
c1041f10
CRI		 5563 /* override HT/VHT configuration only if the AP and we support it */
5564 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) {
5565 struct ieee80211_sta_ht_cap sta_ht_cap;
5566
5567 if (req->flags & ASSOC_REQ_DISABLE_HT)
5568 override = true;
5569
5570 memcpy(&sta_ht_cap, &sband->ht_cap, sizeof(sta_ht_cap));
5571 ieee80211_apply_htcap_overrides(sdata, &sta_ht_cap);
5572
5573 /* check for 40 MHz disable override */
5574 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_40MHZ) &&
5575 sband->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 &&
5576 !(sta_ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40))
5577 override = true;
5578
5579 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) &&
5580 req->flags & ASSOC_REQ_DISABLE_VHT)
5581 override = true;
5582 }
5583
5584 if (req->flags & ASSOC_REQ_DISABLE_HT) {
5585 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
5586 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
75e296e9 5587 ifmgd->flags |= IEEE80211_STA_DISABLE_HE;
c1041f10
CRI		 5588 }
5589
5590 if (req->flags & ASSOC_REQ_DISABLE_VHT)
5591 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
5592
5593 err = ieee80211_prep_connection(sdata, req->bss, true, override);
a1cf775d
JB		 5594 if (err)
5595 goto err_clear;
66e67e41 5596
c65dd147
EG		 5597 rcu_read_lock();
5598 beacon_ies = rcu_dereference(req->bss->beacon_ies);
826262c3 5599
30686bf7 5600 if (ieee80211_hw_check(&sdata->local->hw, NEED_DTIM_BEFORE_ASSOC) &&
c65dd147
EG		 5601 !beacon_ies) {
5602 /*
5603 * Wait up to one beacon interval ...
5604 * should this be more if we miss one?
5605 */
5606 sdata_info(sdata, "waiting for beacon from %pM\n",
5607 ifmgd->bssid);
5608 assoc_data->timeout = TU_TO_EXP_TIME(req->bss->beacon_interval);
89afe614 5609 assoc_data->timeout_started = true;
c65dd147
EG		 5610 assoc_data->need_beacon = true;
5611 } else if (beacon_ies) {
3b3ec3d5 5612 const struct element *elem;
ef429dad
JB		 5613 u8 dtim_count = 0;
5614
78ac51f8
SS		 5615 ieee80211_get_dtim(beacon_ies, &dtim_count,
5616 &ifmgd->dtim_period);
5617
989c6505 5618 ifmgd->have_beacon = true;
66e67e41 5619 assoc_data->timeout = jiffies;
89afe614 5620 assoc_data->timeout_started = true;
ef429dad 5621
30686bf7 5622 if (ieee80211_hw_check(&local->hw, TIMING_BEACON_ONLY)) {
ef429dad
JB		 5623 sdata->vif.bss_conf.sync_tsf = beacon_ies->tsf;
5624 sdata->vif.bss_conf.sync_device_ts =
5625 bss->device_ts_beacon;
5626 sdata->vif.bss_conf.sync_dtim_count = dtim_count;
5627 }
78ac51f8 5628
3b3ec3d5
ST		 5629 elem = cfg80211_find_ext_elem(WLAN_EID_EXT_MULTIPLE_BSSID_CONFIGURATION,
5630 beacon_ies->data, beacon_ies->len);
5631 if (elem && elem->datalen >= 3)
5632 sdata->vif.bss_conf.profile_periodicity = elem->data[2];
78ac51f8 5633
3b3ec3d5
ST		 5634 elem = cfg80211_find_elem(WLAN_EID_EXT_CAPABILITY,
5635 beacon_ies->data, beacon_ies->len);
5636 if (elem && elem->datalen >= 11 &&
5637 (elem->data[10] & WLAN_EXT_CAPA11_EMA_SUPPORT))
78ac51f8 5638 sdata->vif.bss_conf.ema_ap = true;
c65dd147
EG		 5639 } else {
5640 assoc_data->timeout = jiffies;
89afe614 5641 assoc_data->timeout_started = true;
66e67e41 5642 }
c65dd147
EG		 5643 rcu_read_unlock();
5644
8d61ffa5 5645 run_again(sdata, assoc_data->timeout);
66e67e41 5646
fcff4f10
PS		 5647 if (bss->corrupt_data) {
5648 char *corrupt_type = "data";
5649 if (bss->corrupt_data & IEEE80211_BSS_CORRUPT_BEACON) {
5650 if (bss->corrupt_data &
5651 IEEE80211_BSS_CORRUPT_PROBE_RESP)
5652 corrupt_type = "beacon and probe response";
5653 else
5654 corrupt_type = "beacon";
5655 } else if (bss->corrupt_data & IEEE80211_BSS_CORRUPT_PROBE_RESP)
5656 corrupt_type = "probe response";
bdcbd8e0
JB		 5657 sdata_info(sdata, "associating with AP with corrupt %s\n",
5658 corrupt_type);
fcff4f10
PS		 5659 }
5660
8d61ffa5 5661 return 0;
66e67e41 5662 err_clear:
c84a67a2 5663 eth_zero_addr(ifmgd->bssid);
3d2abdfd 5664 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID);
66e67e41
JB		 5665 ifmgd->assoc_data = NULL;
5666 err_free:
5667 kfree(assoc_data);
66e67e41 5668 return err;
f0706e82
JB		 5669}
5670
77fdaa12 5671int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
63c9c5e7 5672 struct cfg80211_deauth_request *req)
f0706e82 5673{
46900298 5674 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
6ae16775 5675 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
6863255b 5676 bool tx = !req->local_state_change;
f0706e82 5677
c9c3a060
JB		 5678 if (ifmgd->auth_data &&
5679 ether_addr_equal(ifmgd->auth_data->bss->bssid, req->bssid)) {
5680 sdata_info(sdata,
5681 "aborting authentication with %pM by local choice (Reason: %u=%s)\n",
5682 req->bssid, req->reason_code,
5683 ieee80211_get_reason_code_string(req->reason_code));
0ff71613 5684
d4e36e55 5685 drv_mgd_prepare_tx(sdata->local, sdata, 0);
4b08d1b6 5686 ieee80211_send_deauth_disassoc(sdata, req->bssid, req->bssid,
37ad3888 5687 IEEE80211_STYPE_DEAUTH,
6863255b 5688 req->reason_code, tx,
37ad3888 5689 frame_buf);
86552017 5690 ieee80211_destroy_auth_data(sdata, false);
a90faa9d
EG		 5691 ieee80211_report_disconnect(sdata, frame_buf,
5692 sizeof(frame_buf), true,
5693 req->reason_code);
86552017 5694
c9c3a060 5695 return 0;
8c7d857c
EG		 5696 }
5697
a64cba3c
AO		 5698 if (ifmgd->assoc_data &&
5699 ether_addr_equal(ifmgd->assoc_data->bss->bssid, req->bssid)) {
5700 sdata_info(sdata,
5701 "aborting association with %pM by local choice (Reason: %u=%s)\n",
5702 req->bssid, req->reason_code,
5703 ieee80211_get_reason_code_string(req->reason_code));
5704
d4e36e55 5705 drv_mgd_prepare_tx(sdata->local, sdata, 0);
4b08d1b6 5706 ieee80211_send_deauth_disassoc(sdata, req->bssid, req->bssid,
a64cba3c
AO		 5707 IEEE80211_STYPE_DEAUTH,
5708 req->reason_code, tx,
5709 frame_buf);
e6f462df 5710 ieee80211_destroy_assoc_data(sdata, false, true);
a64cba3c
AO		 5711 ieee80211_report_disconnect(sdata, frame_buf,
5712 sizeof(frame_buf), true,
5713 req->reason_code);
5714 return 0;
5715 }
5716
86552017
JB		 5717 if (ifmgd->associated &&
5718 ether_addr_equal(ifmgd->associated->bssid, req->bssid)) {
c9c3a060
JB		 5719 sdata_info(sdata,
5720 "deauthenticating from %pM by local choice (Reason: %u=%s)\n",
5721 req->bssid, req->reason_code,
5722 ieee80211_get_reason_code_string(req->reason_code));
5723
86552017
JB		 5724 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
5725 req->reason_code, tx, frame_buf);
a90faa9d
EG		 5726 ieee80211_report_disconnect(sdata, frame_buf,
5727 sizeof(frame_buf), true,
5728 req->reason_code);
c9c3a060
JB		 5729 return 0;
5730 }
86552017 5731
c9c3a060 5732 return -ENOTCONN;
f0706e82 5733}
84363e6e 5734
77fdaa12 5735int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
63c9c5e7 5736 struct cfg80211_disassoc_request *req)
9c6bd790 5737{
77fdaa12 5738 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
e69e95db 5739 u8 bssid[ETH_ALEN];
6ae16775 5740 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
9c6bd790 5741
8d8b261a
JB		 5742 /*
5743 * cfg80211 should catch this ... but it's racy since
5744 * we can receive a disassoc frame, process it, hand it
5745 * to cfg80211 while that's in a locked section already
5746 * trying to tell us that the user wants to disconnect.
5747 */
8d61ffa5 5748 if (ifmgd->associated != req->bss)
77fdaa12 5749 return -ENOLINK;
77fdaa12 5750
bdcbd8e0 5751 sdata_info(sdata,
dfa1ad29
CO		 5752 "disassociating from %pM by local choice (Reason: %u=%s)\n",
5753 req->bss->bssid, req->reason_code, ieee80211_get_reason_code_string(req->reason_code));
0ff71613 5754
e69e95db 5755 memcpy(bssid, req->bss->bssid, ETH_ALEN);
37ad3888
JB		 5756 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DISASSOC,
5757 req->reason_code, !req->local_state_change,
5758 frame_buf);
10f644a4 5759
a90faa9d
EG		 5760 ieee80211_report_disconnect(sdata, frame_buf, sizeof(frame_buf), true,
5761 req->reason_code);
bc83b681 5762
10f644a4
JB		 5763 return 0;
5764}
026331c4 5765
afa762f6 5766void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata)
54e4ffb2
JB		 5767{
5768 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
5769
49921859
BG		 5770 /*
5771 * Make sure some work items will not run after this,
5772 * they will not do anything but might not have been
5773 * cancelled when disconnecting.
5774 */
5775 cancel_work_sync(&ifmgd->monitor_work);
5776 cancel_work_sync(&ifmgd->beacon_connection_loss_work);
5777 cancel_work_sync(&ifmgd->request_smps_work);
5778 cancel_work_sync(&ifmgd->csa_connection_drop_work);
5779 cancel_work_sync(&ifmgd->chswitch_work);
81dd2b88 5780 cancel_delayed_work_sync(&ifmgd->tdls_peer_del_work);
49921859 5781
8d61ffa5 5782 sdata_lock(sdata);
959867fa
JB		 5783 if (ifmgd->assoc_data) {
5784 struct cfg80211_bss *bss = ifmgd->assoc_data->bss;
e6f462df 5785 ieee80211_destroy_assoc_data(sdata, false, false);
959867fa
JB		 5786 cfg80211_assoc_timeout(sdata->dev, bss);
5787 }
54e4ffb2
JB		 5788 if (ifmgd->auth_data)
5789 ieee80211_destroy_auth_data(sdata, false);
1277b4a9
LK		 5790 spin_lock_bh(&ifmgd->teardown_lock);
5791 if (ifmgd->teardown_skb) {
5792 kfree_skb(ifmgd->teardown_skb);
5793 ifmgd->teardown_skb = NULL;
5794 ifmgd->orig_teardown_skb = NULL;
5795 }
4d9ec73d
JM		 5796 kfree(ifmgd->assoc_req_ies);
5797 ifmgd->assoc_req_ies = NULL;
5798 ifmgd->assoc_req_ies_len = 0;
1277b4a9 5799 spin_unlock_bh(&ifmgd->teardown_lock);
54e4ffb2 5800 del_timer_sync(&ifmgd->timer);
8d61ffa5 5801 sdata_unlock(sdata);
54e4ffb2
JB		 5802}
5803
a97c13c3
JO		 5804void ieee80211_cqm_rssi_notify(struct ieee80211_vif *vif,
5805 enum nl80211_cqm_rssi_threshold_event rssi_event,
769f07d8 5806 s32 rssi_level,
a97c13c3
JO		 5807 gfp_t gfp)
5808{
5809 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
5810
769f07d8 5811 trace_api_cqm_rssi_notify(sdata, rssi_event, rssi_level);
b5878a2d 5812
bee427b8 5813 cfg80211_cqm_rssi_notify(sdata->dev, rssi_event, rssi_level, gfp);
a97c13c3
JO		 5814}
5815EXPORT_SYMBOL(ieee80211_cqm_rssi_notify);
98f03342
JB		 5816
5817void ieee80211_cqm_beacon_loss_notify(struct ieee80211_vif *vif, gfp_t gfp)
5818{
5819 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
5820
5821 trace_api_cqm_beacon_loss_notify(sdata->local, sdata);
5822
5823 cfg80211_cqm_beacon_loss_notify(sdata->dev, gfp);
5824}
5825EXPORT_SYMBOL(ieee80211_cqm_beacon_loss_notify);
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