]> git.proxmox.com Git - mirror_ubuntu-zesty-kernel.git/blame - net/mac80211/mlme.c
projects / mirror_ubuntu-zesty-kernel.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
cfg80211: change return value of notifier function
[mirror_ubuntu-zesty-kernel.git] / net / mac80211 / mlme.c
CommitLineData
f0706e82
JB		 1/*
2 * BSS client mode implementation
5394af4d 3 * Copyright 2003-2008, Jouni Malinen <j@w1.fi>
f0706e82
JB		 4 * Copyright 2004, Instant802 Networks, Inc.
5 * Copyright 2005, Devicescape Software, Inc.
6 * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
7 * Copyright 2007, Michael Wu <flamingice@sourmilk.net>
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
12 */
13
5b323edb 14#include <linux/delay.h>
f0706e82
JB		 15#include <linux/if_ether.h>
16#include <linux/skbuff.h>
f0706e82 17#include <linux/if_arp.h>
f0706e82 18#include <linux/etherdevice.h>
d9b93842 19#include <linux/moduleparam.h>
d0709a65 20#include <linux/rtnetlink.h>
e8db0be1 21#include <linux/pm_qos.h>
d91f36db 22#include <linux/crc32.h>
5a0e3ad6 23#include <linux/slab.h>
bc3b2d7f 24#include <linux/export.h>
f0706e82 25#include <net/mac80211.h>
472dbc45 26#include <asm/unaligned.h>
60f8b39c 27
f0706e82 28#include "ieee80211_i.h"
24487981 29#include "driver-ops.h"
2c8dccc7
JB		 30#include "rate.h"
31#include "led.h"
f0706e82 32
1672c0e3 33#define IEEE80211_AUTH_TIMEOUT (HZ / 5)
cb236d2d 34#define IEEE80211_AUTH_TIMEOUT_LONG (HZ / 2)
1672c0e3
JB		 35#define IEEE80211_AUTH_TIMEOUT_SHORT (HZ / 10)
36#define IEEE80211_AUTH_MAX_TRIES 3
37#define IEEE80211_AUTH_WAIT_ASSOC (HZ * 5)
38#define IEEE80211_ASSOC_TIMEOUT (HZ / 5)
cb236d2d 39#define IEEE80211_ASSOC_TIMEOUT_LONG (HZ / 2)
1672c0e3
JB		 40#define IEEE80211_ASSOC_TIMEOUT_SHORT (HZ / 10)
41#define IEEE80211_ASSOC_MAX_TRIES 3
66e67e41 42
180205bd
BG		 43static int max_nullfunc_tries = 2;
44module_param(max_nullfunc_tries, int, 0644);
45MODULE_PARM_DESC(max_nullfunc_tries,
46 "Maximum nullfunc tx tries before disconnecting (reason 4).");
47
48static int max_probe_tries = 5;
49module_param(max_probe_tries, int, 0644);
50MODULE_PARM_DESC(max_probe_tries,
51 "Maximum probe tries before disconnecting (reason 4).");
b291ba11
JB		 52
53/*
7ccc8bd7
FF		 54 * Beacon loss timeout is calculated as N frames times the
55 * advertised beacon interval. This may need to be somewhat
56 * higher than what hardware might detect to account for
57 * delays in the host processing frames. But since we also
58 * probe on beacon miss before declaring the connection lost
59 * default to what we want.
b291ba11 60 */
59c1ec2b
BG		 61static int beacon_loss_count = 7;
62module_param(beacon_loss_count, int, 0644);
63MODULE_PARM_DESC(beacon_loss_count,
64 "Number of beacon intervals before we decide beacon was lost.");
7ccc8bd7 65
b291ba11
JB		 66/*
67 * Time the connection can be idle before we probe
68 * it to see if we can still talk to the AP.
69 */
d1c5091f 70#define IEEE80211_CONNECTION_IDLE_TIME (30 * HZ)
b291ba11
JB		 71/*
72 * Time we wait for a probe response after sending
73 * a probe request because of beacon loss or for
74 * checking the connection still works.
75 */
180205bd
BG		 76static int probe_wait_ms = 500;
77module_param(probe_wait_ms, int, 0644);
78MODULE_PARM_DESC(probe_wait_ms,
79 "Maximum time(ms) to wait for probe response"
80 " before disconnecting (reason 4).");
f0706e82 81
17e4ec14
JM		 82/*
83 * Weight given to the latest Beacon frame when calculating average signal
84 * strength for Beacon frames received in the current BSS. This must be
85 * between 1 and 15.
86 */
87#define IEEE80211_SIGNAL_AVE_WEIGHT 3
88
391a200a
JM		 89/*
90 * How many Beacon frames need to have been used in average signal strength
91 * before starting to indicate signal change events.
92 */
93#define IEEE80211_SIGNAL_AVE_MIN_COUNT 4
94
ca386f31
JB		 95/*
96 * We can have multiple work items (and connection probing)
97 * scheduling this timer, but we need to take care to only
98 * reschedule it when it should fire _earlier_ than it was
99 * asked for before, or if it's not pending right now. This
100 * function ensures that. Note that it then is required to
101 * run this function for all timeouts after the first one
102 * has happened -- the work that runs from this timer will
103 * do that.
104 */
8d61ffa5
JB		 105static void run_again(struct ieee80211_sub_if_data *sdata,
106 unsigned long timeout)
ca386f31 107{
8d61ffa5 108 sdata_assert_lock(sdata);
ca386f31 109
8d61ffa5
JB		 110 if (!timer_pending(&sdata->u.mgd.timer) ||
111 time_before(timeout, sdata->u.mgd.timer.expires))
112 mod_timer(&sdata->u.mgd.timer, timeout);
ca386f31
JB		 113}
114
d3a910a8 115void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata)
b291ba11 116{
c1288b12 117 if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER)
b291ba11
JB		 118 return;
119
7eeff74c
JB		 120 if (sdata->local->hw.flags & IEEE80211_HW_CONNECTION_MONITOR)
121 return;
122
b291ba11 123 mod_timer(&sdata->u.mgd.bcn_mon_timer,
7ccc8bd7 124 round_jiffies_up(jiffies + sdata->u.mgd.beacon_timeout));
b291ba11
JB		 125}
126
be099e82
LR		 127void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata)
128{
0c699c3a
LR		 129 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
130
8628172f
SG		 131 if (unlikely(!sdata->u.mgd.associated))
132 return;
133
448cd2e2
EP		 134 ifmgd->probe_send_count = 0;
135
be099e82
LR		 136 if (sdata->local->hw.flags & IEEE80211_HW_CONNECTION_MONITOR)
137 return;
138
139 mod_timer(&sdata->u.mgd.conn_mon_timer,
140 round_jiffies_up(jiffies + IEEE80211_CONNECTION_IDLE_TIME));
141}
142
5484e237 143static int ecw2cw(int ecw)
60f8b39c 144{
5484e237 145 return (1 << ecw) - 1;
60f8b39c
JB		 146}
147
6565ec9b
JB		 148static u32
149ieee80211_determine_chantype(struct ieee80211_sub_if_data *sdata,
150 struct ieee80211_supported_band *sband,
151 struct ieee80211_channel *channel,
152 const struct ieee80211_ht_operation *ht_oper,
153 const struct ieee80211_vht_operation *vht_oper,
5cdaed1e 154 struct cfg80211_chan_def *chandef, bool tracking)
6565ec9b 155{
5cdaed1e 156 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
6565ec9b
JB		 157 struct cfg80211_chan_def vht_chandef;
158 u32 ht_cfreq, ret;
159
160 chandef->chan = channel;
161 chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
162 chandef->center_freq1 = channel->center_freq;
163 chandef->center_freq2 = 0;
164
165 if (!ht_oper || !sband->ht_cap.ht_supported) {
166 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
167 goto out;
168 }
169
170 chandef->width = NL80211_CHAN_WIDTH_20;
171
172 ht_cfreq = ieee80211_channel_to_frequency(ht_oper->primary_chan,
173 channel->band);
174 /* check that channel matches the right operating channel */
5cdaed1e 175 if (!tracking && channel->center_freq != ht_cfreq) {
6565ec9b
JB		 176 /*
177 * It's possible that some APs are confused here;
178 * Netgear WNDR3700 sometimes reports 4 higher than
179 * the actual channel in association responses, but
180 * since we look at probe response/beacon data here
181 * it should be OK.
182 */
5cdaed1e
JB		 183 sdata_info(sdata,
184 "Wrong control channel: center-freq: %d ht-cfreq: %d ht->primary_chan: %d band: %d - Disabling HT\n",
185 channel->center_freq, ht_cfreq,
186 ht_oper->primary_chan, channel->band);
6565ec9b
JB		 187 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
188 goto out;
189 }
190
191 /* check 40 MHz support, if we have it */
192 if (sband->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40) {
193 switch (ht_oper->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) {
194 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
195 chandef->width = NL80211_CHAN_WIDTH_40;
196 chandef->center_freq1 += 10;
197 break;
198 case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
199 chandef->width = NL80211_CHAN_WIDTH_40;
200 chandef->center_freq1 -= 10;
201 break;
202 }
203 } else {
204 /* 40 MHz (and 80 MHz) must be supported for VHT */
205 ret = IEEE80211_STA_DISABLE_VHT;
85220d71
JB		 206 /* also mark 40 MHz disabled */
207 ret |= IEEE80211_STA_DISABLE_40MHZ;
6565ec9b
JB		 208 goto out;
209 }
210
211 if (!vht_oper || !sband->vht_cap.vht_supported) {
212 ret = IEEE80211_STA_DISABLE_VHT;
213 goto out;
214 }
215
216 vht_chandef.chan = channel;
217 vht_chandef.center_freq1 =
218 ieee80211_channel_to_frequency(vht_oper->center_freq_seg1_idx,
219 channel->band);
220 vht_chandef.center_freq2 = 0;
221
6565ec9b
JB		 222 switch (vht_oper->chan_width) {
223 case IEEE80211_VHT_CHANWIDTH_USE_HT:
224 vht_chandef.width = chandef->width;
cb664981 225 vht_chandef.center_freq1 = chandef->center_freq1;
6565ec9b
JB		 226 break;
227 case IEEE80211_VHT_CHANWIDTH_80MHZ:
228 vht_chandef.width = NL80211_CHAN_WIDTH_80;
229 break;
230 case IEEE80211_VHT_CHANWIDTH_160MHZ:
231 vht_chandef.width = NL80211_CHAN_WIDTH_160;
232 break;
233 case IEEE80211_VHT_CHANWIDTH_80P80MHZ:
234 vht_chandef.width = NL80211_CHAN_WIDTH_80P80;
6553bf04
JB		 235 vht_chandef.center_freq2 =
236 ieee80211_channel_to_frequency(
237 vht_oper->center_freq_seg2_idx,
238 channel->band);
6565ec9b
JB		 239 break;
240 default:
5cdaed1e 241 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
30eb1dc2
JB		 242 sdata_info(sdata,
243 "AP VHT operation IE has invalid channel width (%d), disable VHT\n",
244 vht_oper->chan_width);
6565ec9b
JB		 245 ret = IEEE80211_STA_DISABLE_VHT;
246 goto out;
247 }
248
249 if (!cfg80211_chandef_valid(&vht_chandef)) {
5cdaed1e 250 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
30eb1dc2
JB		 251 sdata_info(sdata,
252 "AP VHT information is invalid, disable VHT\n");
6565ec9b
JB		 253 ret = IEEE80211_STA_DISABLE_VHT;
254 goto out;
255 }
256
257 if (cfg80211_chandef_identical(chandef, &vht_chandef)) {
258 ret = 0;
259 goto out;
260 }
261
262 if (!cfg80211_chandef_compatible(chandef, &vht_chandef)) {
5cdaed1e 263 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
30eb1dc2
JB		 264 sdata_info(sdata,
265 "AP VHT information doesn't match HT, disable VHT\n");
6565ec9b
JB		 266 ret = IEEE80211_STA_DISABLE_VHT;
267 goto out;
268 }
269
270 *chandef = vht_chandef;
271
272 ret = 0;
273
274out:
963a1852
JB		 275 /*
276 * When tracking the current AP, don't do any further checks if the
277 * new chandef is identical to the one we're currently using for the
278 * connection. This keeps us from playing ping-pong with regulatory,
279 * without it the following can happen (for example):
280 * - connect to an AP with 80 MHz, world regdom allows 80 MHz
281 * - AP advertises regdom US
282 * - CRDA loads regdom US with 80 MHz prohibited (old database)
283 * - the code below detects an unsupported channel, downgrades, and
284 * we disconnect from the AP in the caller
285 * - disconnect causes CRDA to reload world regdomain and the game
286 * starts anew.
287 * (see https://bugzilla.kernel.org/show_bug.cgi?id=70881)
288 *
289 * It seems possible that there are still scenarios with CSA or real
290 * bandwidth changes where a this could happen, but those cases are
291 * less common and wouldn't completely prevent using the AP.
292 */
293 if (tracking &&
294 cfg80211_chandef_identical(chandef, &sdata->vif.bss_conf.chandef))
295 return ret;
296
586e01ed
JB		 297 /* don't print the message below for VHT mismatch if VHT is disabled */
298 if (ret & IEEE80211_STA_DISABLE_VHT)
299 vht_chandef = *chandef;
300
ddfe49b4
JB		 301 /*
302 * Ignore the DISABLED flag when we're already connected and only
303 * tracking the APs beacon for bandwidth changes - otherwise we
304 * might get disconnected here if we connect to an AP, update our
305 * regulatory information based on the AP's country IE and the
306 * information we have is wrong/outdated and disables the channel
307 * that we're actually using for the connection to the AP.
308 */
6565ec9b 309 while (!cfg80211_chandef_usable(sdata->local->hw.wiphy, chandef,
ddfe49b4
JB		 310 tracking ? 0 :
311 IEEE80211_CHAN_DISABLED)) {
6565ec9b
JB		 312 if (WARN_ON(chandef->width == NL80211_CHAN_WIDTH_20_NOHT)) {
313 ret = IEEE80211_STA_DISABLE_HT |
314 IEEE80211_STA_DISABLE_VHT;
b56e4b85 315 break;
6565ec9b
JB		 316 }
317
e6b7cde4 318 ret |= ieee80211_chandef_downgrade(chandef);
6565ec9b
JB		 319 }
320
5cdaed1e 321 if (chandef->width != vht_chandef.width && !tracking)
6565ec9b
JB		 322 sdata_info(sdata,
323 "capabilities/regulatory prevented using AP HT/VHT configuration, downgraded\n");
324
325 WARN_ON_ONCE(!cfg80211_chandef_valid(chandef));
326 return ret;
327}
328
30eb1dc2
JB		 329static int ieee80211_config_bw(struct ieee80211_sub_if_data *sdata,
330 struct sta_info *sta,
331 const struct ieee80211_ht_operation *ht_oper,
332 const struct ieee80211_vht_operation *vht_oper,
333 const u8 *bssid, u32 *changed)
d5522e03
JB		 334{
335 struct ieee80211_local *local = sdata->local;
30eb1dc2 336 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
d5522e03 337 struct ieee80211_supported_band *sband;
55de908a 338 struct ieee80211_channel *chan;
30eb1dc2 339 struct cfg80211_chan_def chandef;
9ed6bcce 340 u16 ht_opmode;
30eb1dc2
JB		 341 u32 flags;
342 enum ieee80211_sta_rx_bandwidth new_sta_bw;
343 int ret;
d5522e03 344
30eb1dc2
JB		 345 /* if HT was/is disabled, don't track any bandwidth changes */
346 if (ifmgd->flags & IEEE80211_STA_DISABLE_HT || !ht_oper)
1128958d
JB		 347 return 0;
348
30eb1dc2
JB		 349 /* don't check VHT if we associated as non-VHT station */
350 if (ifmgd->flags & IEEE80211_STA_DISABLE_VHT)
351 vht_oper = NULL;
352
353 if (WARN_ON_ONCE(!sta))
354 return -EINVAL;
355
017b45bb
AA		 356 /*
357 * if bss configuration changed store the new one -
358 * this may be applicable even if channel is identical
359 */
360 ht_opmode = le16_to_cpu(ht_oper->operation_mode);
361 if (sdata->vif.bss_conf.ht_operation_mode != ht_opmode) {
362 *changed |= BSS_CHANGED_HT;
363 sdata->vif.bss_conf.ht_operation_mode = ht_opmode;
364 }
365
f2d9330e 366 chan = sdata->vif.bss_conf.chandef.chan;
55de908a 367 sband = local->hw.wiphy->bands[chan->band];
d5522e03 368
30eb1dc2
JB		 369 /* calculate new channel (type) based on HT/VHT operation IEs */
370 flags = ieee80211_determine_chantype(sdata, sband, chan, ht_oper,
5cdaed1e 371 vht_oper, &chandef, true);
30eb1dc2
JB		 372
373 /*
374 * Downgrade the new channel if we associated with restricted
375 * capabilities. For example, if we associated as a 20 MHz STA
376 * to a 40 MHz AP (due to regulatory, capabilities or config
377 * reasons) then switching to a 40 MHz channel now won't do us
378 * any good -- we couldn't use it with the AP.
379 */
380 if (ifmgd->flags & IEEE80211_STA_DISABLE_80P80MHZ &&
381 chandef.width == NL80211_CHAN_WIDTH_80P80)
e6b7cde4 382 flags |= ieee80211_chandef_downgrade(&chandef);
30eb1dc2
JB		 383 if (ifmgd->flags & IEEE80211_STA_DISABLE_160MHZ &&
384 chandef.width == NL80211_CHAN_WIDTH_160)
e6b7cde4 385 flags |= ieee80211_chandef_downgrade(&chandef);
30eb1dc2
JB		 386 if (ifmgd->flags & IEEE80211_STA_DISABLE_40MHZ &&
387 chandef.width > NL80211_CHAN_WIDTH_20)
e6b7cde4 388 flags |= ieee80211_chandef_downgrade(&chandef);
30eb1dc2
JB		 389
390 if (cfg80211_chandef_identical(&chandef, &sdata->vif.bss_conf.chandef))
391 return 0;
392
393 sdata_info(sdata,
394 "AP %pM changed bandwidth, new config is %d MHz, width %d (%d/%d MHz)\n",
395 ifmgd->bssid, chandef.chan->center_freq, chandef.width,
396 chandef.center_freq1, chandef.center_freq2);
397
398 if (flags != (ifmgd->flags & (IEEE80211_STA_DISABLE_HT |
399 IEEE80211_STA_DISABLE_VHT |
400 IEEE80211_STA_DISABLE_40MHZ |
401 IEEE80211_STA_DISABLE_80P80MHZ |
402 IEEE80211_STA_DISABLE_160MHZ)) ||
403 !cfg80211_chandef_valid(&chandef)) {
404 sdata_info(sdata,
405 "AP %pM changed bandwidth in a way we can't support - disconnect\n",
406 ifmgd->bssid);
407 return -EINVAL;
408 }
409
410 switch (chandef.width) {
411 case NL80211_CHAN_WIDTH_20_NOHT:
412 case NL80211_CHAN_WIDTH_20:
413 new_sta_bw = IEEE80211_STA_RX_BW_20;
414 break;
4bf88530 415 case NL80211_CHAN_WIDTH_40:
30eb1dc2 416 new_sta_bw = IEEE80211_STA_RX_BW_40;
64f68e5d 417 break;
30eb1dc2
JB		 418 case NL80211_CHAN_WIDTH_80:
419 new_sta_bw = IEEE80211_STA_RX_BW_80;
420 break;
421 case NL80211_CHAN_WIDTH_80P80:
422 case NL80211_CHAN_WIDTH_160:
423 new_sta_bw = IEEE80211_STA_RX_BW_160;
64f68e5d 424 break;
30eb1dc2
JB		 425 default:
426 return -EINVAL;
64f68e5d 427 }
d5522e03 428
30eb1dc2
JB		 429 if (new_sta_bw > sta->cur_max_bandwidth)
430 new_sta_bw = sta->cur_max_bandwidth;
64f68e5d 431
30eb1dc2
JB		 432 if (new_sta_bw < sta->sta.bandwidth) {
433 sta->sta.bandwidth = new_sta_bw;
434 rate_control_rate_update(local, sband, sta,
435 IEEE80211_RC_BW_CHANGED);
436 }
64f68e5d 437
30eb1dc2
JB		 438 ret = ieee80211_vif_change_bandwidth(sdata, &chandef, changed);
439 if (ret) {
440 sdata_info(sdata,
441 "AP %pM changed bandwidth to incompatible one - disconnect\n",
442 ifmgd->bssid);
443 return ret;
444 }
7cc44ed4 445
30eb1dc2
JB		 446 if (new_sta_bw > sta->sta.bandwidth) {
447 sta->sta.bandwidth = new_sta_bw;
448 rate_control_rate_update(local, sband, sta,
449 IEEE80211_RC_BW_CHANGED);
0aaffa9b 450 }
d5522e03 451
30eb1dc2 452 return 0;
d5522e03
JB		 453}
454
9c6bd790
JB		 455/* frame sending functions */
456
66e67e41 457static void ieee80211_add_ht_ie(struct ieee80211_sub_if_data *sdata,
9dde6423 458 struct sk_buff *skb, u8 ap_ht_param,
66e67e41
JB		 459 struct ieee80211_supported_band *sband,
460 struct ieee80211_channel *channel,
461 enum ieee80211_smps_mode smps)
462{
66e67e41
JB		 463 u8 *pos;
464 u32 flags = channel->flags;
465 u16 cap;
466 struct ieee80211_sta_ht_cap ht_cap;
467
468 BUILD_BUG_ON(sizeof(ht_cap) != sizeof(sband->ht_cap));
469
66e67e41
JB		 470 memcpy(&ht_cap, &sband->ht_cap, sizeof(ht_cap));
471 ieee80211_apply_htcap_overrides(sdata, &ht_cap);
472
66e67e41
JB		 473 /* determine capability flags */
474 cap = ht_cap.cap;
475
9dde6423 476 switch (ap_ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) {
66e67e41
JB		 477 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
478 if (flags & IEEE80211_CHAN_NO_HT40PLUS) {
479 cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
480 cap &= ~IEEE80211_HT_CAP_SGI_40;
481 }
482 break;
483 case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
484 if (flags & IEEE80211_CHAN_NO_HT40MINUS) {
485 cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
486 cap &= ~IEEE80211_HT_CAP_SGI_40;
487 }
488 break;
489 }
490
24398e39
JB		 491 /*
492 * If 40 MHz was disabled associate as though we weren't
493 * capable of 40 MHz -- some broken APs will never fall
494 * back to trying to transmit in 20 MHz.
495 */
496 if (sdata->u.mgd.flags & IEEE80211_STA_DISABLE_40MHZ) {
497 cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
498 cap &= ~IEEE80211_HT_CAP_SGI_40;
499 }
500
66e67e41
JB		 501 /* set SM PS mode properly */
502 cap &= ~IEEE80211_HT_CAP_SM_PS;
503 switch (smps) {
504 case IEEE80211_SMPS_AUTOMATIC:
505 case IEEE80211_SMPS_NUM_MODES:
506 WARN_ON(1);
507 case IEEE80211_SMPS_OFF:
508 cap |= WLAN_HT_CAP_SM_PS_DISABLED <<
509 IEEE80211_HT_CAP_SM_PS_SHIFT;
510 break;
511 case IEEE80211_SMPS_STATIC:
512 cap |= WLAN_HT_CAP_SM_PS_STATIC <<
513 IEEE80211_HT_CAP_SM_PS_SHIFT;
514 break;
515 case IEEE80211_SMPS_DYNAMIC:
516 cap |= WLAN_HT_CAP_SM_PS_DYNAMIC <<
517 IEEE80211_HT_CAP_SM_PS_SHIFT;
518 break;
519 }
520
521 /* reserve and fill IE */
522 pos = skb_put(skb, sizeof(struct ieee80211_ht_cap) + 2);
523 ieee80211_ie_build_ht_cap(pos, &ht_cap, cap);
524}
525
d545daba
MP		 526static void ieee80211_add_vht_ie(struct ieee80211_sub_if_data *sdata,
527 struct sk_buff *skb,
b08fbbd8
JB		 528 struct ieee80211_supported_band *sband,
529 struct ieee80211_vht_cap *ap_vht_cap)
d545daba
MP		 530{
531 u8 *pos;
532 u32 cap;
533 struct ieee80211_sta_vht_cap vht_cap;
c1cf6d4e 534 u32 mask, ap_bf_sts, our_bf_sts;
d545daba
MP		 535
536 BUILD_BUG_ON(sizeof(vht_cap) != sizeof(sband->vht_cap));
537
538 memcpy(&vht_cap, &sband->vht_cap, sizeof(vht_cap));
dd5ecfea 539 ieee80211_apply_vhtcap_overrides(sdata, &vht_cap);
d545daba
MP		 540
541 /* determine capability flags */
542 cap = vht_cap.cap;
543
f2d9d270
JB		 544 if (sdata->u.mgd.flags & IEEE80211_STA_DISABLE_80P80MHZ) {
545 cap &= ~IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ;
546 cap |= IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ;
547 }
548
549 if (sdata->u.mgd.flags & IEEE80211_STA_DISABLE_160MHZ) {
550 cap &= ~IEEE80211_VHT_CAP_SHORT_GI_160;
551 cap &= ~IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ;
552 }
553
b08fbbd8
JB		 554 /*
555 * Some APs apparently get confused if our capabilities are better
556 * than theirs, so restrict what we advertise in the assoc request.
557 */
558 if (!(ap_vht_cap->vht_cap_info &
559 cpu_to_le32(IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE)))
560 cap &= ~IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE;
561
c1cf6d4e
ES		 562 mask = IEEE80211_VHT_CAP_BEAMFORMEE_STS_MASK;
563
564 ap_bf_sts = le32_to_cpu(ap_vht_cap->vht_cap_info) & mask;
565 our_bf_sts = cap & mask;
566
567 if (ap_bf_sts < our_bf_sts) {
568 cap &= ~mask;
569 cap |= ap_bf_sts;
570 }
571
d545daba 572 /* reserve and fill IE */
d4950281 573 pos = skb_put(skb, sizeof(struct ieee80211_vht_cap) + 2);
d545daba
MP		 574 ieee80211_ie_build_vht_cap(pos, &vht_cap, cap);
575}
576
66e67e41
JB		 577static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata)
578{
579 struct ieee80211_local *local = sdata->local;
580 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
581 struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data;
582 struct sk_buff *skb;
583 struct ieee80211_mgmt *mgmt;
584 u8 *pos, qos_info;
585 size_t offset = 0, noffset;
2103dec1 586 int i, count, rates_len, supp_rates_len, shift;
66e67e41
JB		 587 u16 capab;
588 struct ieee80211_supported_band *sband;
55de908a
JB		 589 struct ieee80211_chanctx_conf *chanctx_conf;
590 struct ieee80211_channel *chan;
2103dec1 591 u32 rate_flags, rates = 0;
66e67e41 592
8d61ffa5 593 sdata_assert_lock(sdata);
66e67e41 594
55de908a
JB		 595 rcu_read_lock();
596 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
597 if (WARN_ON(!chanctx_conf)) {
598 rcu_read_unlock();
599 return;
600 }
4bf88530 601 chan = chanctx_conf->def.chan;
2103dec1 602 rate_flags = ieee80211_chandef_rate_flags(&chanctx_conf->def);
55de908a
JB		 603 rcu_read_unlock();
604 sband = local->hw.wiphy->bands[chan->band];
2103dec1 605 shift = ieee80211_vif_get_shift(&sdata->vif);
66e67e41
JB		 606
607 if (assoc_data->supp_rates_len) {
608 /*
609 * Get all rates supported by the device and the AP as
610 * some APs don't like getting a superset of their rates
611 * in the association request (e.g. D-Link DAP 1353 in
612 * b-only mode)...
613 */
2103dec1
SW		 614 rates_len = ieee80211_parse_bitrates(&chanctx_conf->def, sband,
615 assoc_data->supp_rates,
616 assoc_data->supp_rates_len,
617 &rates);
66e67e41
JB		 618 } else {
619 /*
620 * In case AP not provide any supported rates information
621 * before association, we send information element(s) with
622 * all rates that we support.
623 */
2103dec1
SW		 624 rates_len = 0;
625 for (i = 0; i < sband->n_bitrates; i++) {
626 if ((rate_flags & sband->bitrates[i].flags)
627 != rate_flags)
628 continue;
629 rates |= BIT(i);
630 rates_len++;
631 }
66e67e41
JB		 632 }
633
634 skb = alloc_skb(local->hw.extra_tx_headroom +
635 sizeof(*mgmt) + /* bit too much but doesn't matter */
636 2 + assoc_data->ssid_len + /* SSID */
637 4 + rates_len + /* (extended) rates */
638 4 + /* power capability */
639 2 + 2 * sband->n_channels + /* supported channels */
640 2 + sizeof(struct ieee80211_ht_cap) + /* HT */
d4950281 641 2 + sizeof(struct ieee80211_vht_cap) + /* VHT */
66e67e41
JB		 642 assoc_data->ie_len + /* extra IEs */
643 9, /* WMM */
644 GFP_KERNEL);
645 if (!skb)
646 return;
647
648 skb_reserve(skb, local->hw.extra_tx_headroom);
649
650 capab = WLAN_CAPABILITY_ESS;
651
652 if (sband->band == IEEE80211_BAND_2GHZ) {
653 if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE))
654 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
655 if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE))
656 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
657 }
658
659 if (assoc_data->capability & WLAN_CAPABILITY_PRIVACY)
660 capab |= WLAN_CAPABILITY_PRIVACY;
661
662 if ((assoc_data->capability & WLAN_CAPABILITY_SPECTRUM_MGMT) &&
663 (local->hw.flags & IEEE80211_HW_SPECTRUM_MGMT))
664 capab |= WLAN_CAPABILITY_SPECTRUM_MGMT;
665
666 mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
667 memset(mgmt, 0, 24);
668 memcpy(mgmt->da, assoc_data->bss->bssid, ETH_ALEN);
669 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
670 memcpy(mgmt->bssid, assoc_data->bss->bssid, ETH_ALEN);
671
672 if (!is_zero_ether_addr(assoc_data->prev_bssid)) {
673 skb_put(skb, 10);
674 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
675 IEEE80211_STYPE_REASSOC_REQ);
676 mgmt->u.reassoc_req.capab_info = cpu_to_le16(capab);
677 mgmt->u.reassoc_req.listen_interval =
678 cpu_to_le16(local->hw.conf.listen_interval);
679 memcpy(mgmt->u.reassoc_req.current_ap, assoc_data->prev_bssid,
680 ETH_ALEN);
681 } else {
682 skb_put(skb, 4);
683 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
684 IEEE80211_STYPE_ASSOC_REQ);
685 mgmt->u.assoc_req.capab_info = cpu_to_le16(capab);
686 mgmt->u.assoc_req.listen_interval =
687 cpu_to_le16(local->hw.conf.listen_interval);
688 }
689
690 /* SSID */
691 pos = skb_put(skb, 2 + assoc_data->ssid_len);
692 *pos++ = WLAN_EID_SSID;
693 *pos++ = assoc_data->ssid_len;
694 memcpy(pos, assoc_data->ssid, assoc_data->ssid_len);
695
696 /* add all rates which were marked to be used above */
697 supp_rates_len = rates_len;
698 if (supp_rates_len > 8)
699 supp_rates_len = 8;
700
701 pos = skb_put(skb, supp_rates_len + 2);
702 *pos++ = WLAN_EID_SUPP_RATES;
703 *pos++ = supp_rates_len;
704
705 count = 0;
706 for (i = 0; i < sband->n_bitrates; i++) {
707 if (BIT(i) & rates) {
2103dec1
SW		 708 int rate = DIV_ROUND_UP(sband->bitrates[i].bitrate,
709 5 * (1 << shift));
710 *pos++ = (u8) rate;
66e67e41
JB		 711 if (++count == 8)
712 break;
713 }
714 }
715
716 if (rates_len > count) {
717 pos = skb_put(skb, rates_len - count + 2);
718 *pos++ = WLAN_EID_EXT_SUPP_RATES;
719 *pos++ = rates_len - count;
720
721 for (i++; i < sband->n_bitrates; i++) {
722 if (BIT(i) & rates) {
2103dec1
SW		 723 int rate;
724 rate = DIV_ROUND_UP(sband->bitrates[i].bitrate,
725 5 * (1 << shift));
726 *pos++ = (u8) rate;
66e67e41
JB		 727 }
728 }
729 }
730
731 if (capab & WLAN_CAPABILITY_SPECTRUM_MGMT) {
732 /* 1. power capabilities */
733 pos = skb_put(skb, 4);
734 *pos++ = WLAN_EID_PWR_CAPABILITY;
735 *pos++ = 2;
736 *pos++ = 0; /* min tx power */
0430c883
SW		 737 /* max tx power */
738 *pos++ = ieee80211_chandef_max_power(&chanctx_conf->def);
66e67e41
JB		 739
740 /* 2. supported channels */
741 /* TODO: get this in reg domain format */
742 pos = skb_put(skb, 2 * sband->n_channels + 2);
743 *pos++ = WLAN_EID_SUPPORTED_CHANNELS;
744 *pos++ = 2 * sband->n_channels;
745 for (i = 0; i < sband->n_channels; i++) {
746 *pos++ = ieee80211_frequency_to_channel(
747 sband->channels[i].center_freq);
748 *pos++ = 1; /* one channel in the subband*/
749 }
750 }
751
752 /* if present, add any custom IEs that go before HT */
b3f51e94 753 if (assoc_data->ie_len) {
66e67e41
JB		 754 static const u8 before_ht[] = {
755 WLAN_EID_SSID,
756 WLAN_EID_SUPP_RATES,
757 WLAN_EID_EXT_SUPP_RATES,
758 WLAN_EID_PWR_CAPABILITY,
759 WLAN_EID_SUPPORTED_CHANNELS,
760 WLAN_EID_RSN,
761 WLAN_EID_QOS_CAPA,
762 WLAN_EID_RRM_ENABLED_CAPABILITIES,
763 WLAN_EID_MOBILITY_DOMAIN,
764 WLAN_EID_SUPPORTED_REGULATORY_CLASSES,
765 };
766 noffset = ieee80211_ie_split(assoc_data->ie, assoc_data->ie_len,
767 before_ht, ARRAY_SIZE(before_ht),
768 offset);
769 pos = skb_put(skb, noffset - offset);
770 memcpy(pos, assoc_data->ie + offset, noffset - offset);
771 offset = noffset;
772 }
773
f2d9d270
JB		 774 if (WARN_ON_ONCE((ifmgd->flags & IEEE80211_STA_DISABLE_HT) &&
775 !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)))
776 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
777
a8243b72 778 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT))
9dde6423 779 ieee80211_add_ht_ie(sdata, skb, assoc_data->ap_ht_param,
04ecd257 780 sband, chan, sdata->smps_mode);
66e67e41 781
3de3802c
JB		 782 /* if present, add any custom IEs that go before VHT */
783 if (assoc_data->ie_len) {
784 static const u8 before_vht[] = {
785 WLAN_EID_SSID,
786 WLAN_EID_SUPP_RATES,
787 WLAN_EID_EXT_SUPP_RATES,
788 WLAN_EID_PWR_CAPABILITY,
789 WLAN_EID_SUPPORTED_CHANNELS,
790 WLAN_EID_RSN,
791 WLAN_EID_QOS_CAPA,
792 WLAN_EID_RRM_ENABLED_CAPABILITIES,
793 WLAN_EID_MOBILITY_DOMAIN,
794 WLAN_EID_SUPPORTED_REGULATORY_CLASSES,
795 WLAN_EID_HT_CAPABILITY,
796 WLAN_EID_BSS_COEX_2040,
797 WLAN_EID_EXT_CAPABILITY,
798 WLAN_EID_QOS_TRAFFIC_CAPA,
799 WLAN_EID_TIM_BCAST_REQ,
800 WLAN_EID_INTERWORKING,
801 };
802 noffset = ieee80211_ie_split(assoc_data->ie, assoc_data->ie_len,
803 before_vht, ARRAY_SIZE(before_vht),
804 offset);
805 pos = skb_put(skb, noffset - offset);
806 memcpy(pos, assoc_data->ie + offset, noffset - offset);
807 offset = noffset;
808 }
809
d545daba 810 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
b08fbbd8
JB		 811 ieee80211_add_vht_ie(sdata, skb, sband,
812 &assoc_data->ap_vht_cap);
d545daba 813
66e67e41 814 /* if present, add any custom non-vendor IEs that go after HT */
b3f51e94 815 if (assoc_data->ie_len) {
66e67e41
JB		 816 noffset = ieee80211_ie_split_vendor(assoc_data->ie,
817 assoc_data->ie_len,
818 offset);
819 pos = skb_put(skb, noffset - offset);
820 memcpy(pos, assoc_data->ie + offset, noffset - offset);
821 offset = noffset;
822 }
823
76f0303d
JB		 824 if (assoc_data->wmm) {
825 if (assoc_data->uapsd) {
dc41e4d4
EP		 826 qos_info = ifmgd->uapsd_queues;
827 qos_info |= (ifmgd->uapsd_max_sp_len <<
66e67e41
JB		 828 IEEE80211_WMM_IE_STA_QOSINFO_SP_SHIFT);
829 } else {
830 qos_info = 0;
831 }
832
833 pos = skb_put(skb, 9);
834 *pos++ = WLAN_EID_VENDOR_SPECIFIC;
835 *pos++ = 7; /* len */
836 *pos++ = 0x00; /* Microsoft OUI 00:50:F2 */
837 *pos++ = 0x50;
838 *pos++ = 0xf2;
839 *pos++ = 2; /* WME */
840 *pos++ = 0; /* WME info */
841 *pos++ = 1; /* WME ver */
842 *pos++ = qos_info;
843 }
844
845 /* add any remaining custom (i.e. vendor specific here) IEs */
b3f51e94 846 if (assoc_data->ie_len) {
66e67e41
JB		 847 noffset = assoc_data->ie_len;
848 pos = skb_put(skb, noffset - offset);
849 memcpy(pos, assoc_data->ie + offset, noffset - offset);
850 }
851
a1845fc7
JB		 852 drv_mgd_prepare_tx(local, sdata);
853
66e67e41 854 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
1672c0e3
JB		 855 if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)
856 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
857 IEEE80211_TX_INTFL_MLME_CONN_TX;
66e67e41
JB		 858 ieee80211_tx_skb(sdata, skb);
859}
860
572e0012
KV		 861void ieee80211_send_pspoll(struct ieee80211_local *local,
862 struct ieee80211_sub_if_data *sdata)
863{
572e0012
KV		 864 struct ieee80211_pspoll *pspoll;
865 struct sk_buff *skb;
572e0012 866
d8cd189e
KV		 867 skb = ieee80211_pspoll_get(&local->hw, &sdata->vif);
868 if (!skb)
572e0012 869 return;
572e0012 870
d8cd189e
KV		 871 pspoll = (struct ieee80211_pspoll *) skb->data;
872 pspoll->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
572e0012 873
62ae67be
JB		 874 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
875 ieee80211_tx_skb(sdata, skb);
572e0012
KV		 876}
877
965bedad
JB		 878void ieee80211_send_nullfunc(struct ieee80211_local *local,
879 struct ieee80211_sub_if_data *sdata,
880 int powersave)
881{
882 struct sk_buff *skb;
d8cd189e 883 struct ieee80211_hdr_3addr *nullfunc;
b6f35301 884 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
965bedad 885
d8cd189e
KV		 886 skb = ieee80211_nullfunc_get(&local->hw, &sdata->vif);
887 if (!skb)
965bedad 888 return;
965bedad 889
d8cd189e 890 nullfunc = (struct ieee80211_hdr_3addr *) skb->data;
965bedad 891 if (powersave)
d8cd189e 892 nullfunc->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
965bedad 893
6c17b77b
SF		 894 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT |
895 IEEE80211_TX_INTFL_OFFCHAN_TX_OK;
ff40b425
PF		 896
897 if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)
898 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS;
899
392b9ffb 900 if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL)
b6f35301
RM		 901 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_USE_MINRATE;
902
62ae67be 903 ieee80211_tx_skb(sdata, skb);
965bedad
JB		 904}
905
d524215f
FF		 906static void ieee80211_send_4addr_nullfunc(struct ieee80211_local *local,
907 struct ieee80211_sub_if_data *sdata)
908{
909 struct sk_buff *skb;
910 struct ieee80211_hdr *nullfunc;
911 __le16 fc;
912
913 if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
914 return;
915
916 skb = dev_alloc_skb(local->hw.extra_tx_headroom + 30);
d15b8459 917 if (!skb)
d524215f 918 return;
d15b8459 919
d524215f
FF		 920 skb_reserve(skb, local->hw.extra_tx_headroom);
921
922 nullfunc = (struct ieee80211_hdr *) skb_put(skb, 30);
923 memset(nullfunc, 0, 30);
924 fc = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC |
925 IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS);
926 nullfunc->frame_control = fc;
927 memcpy(nullfunc->addr1, sdata->u.mgd.bssid, ETH_ALEN);
928 memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
929 memcpy(nullfunc->addr3, sdata->u.mgd.bssid, ETH_ALEN);
930 memcpy(nullfunc->addr4, sdata->vif.addr, ETH_ALEN);
931
932 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
933 ieee80211_tx_skb(sdata, skb);
934}
935
cc32abd4
JB		 936/* spectrum management related things */
937static void ieee80211_chswitch_work(struct work_struct *work)
938{
939 struct ieee80211_sub_if_data *sdata =
940 container_of(work, struct ieee80211_sub_if_data, u.mgd.chswitch_work);
675a0b04 941 struct ieee80211_local *local = sdata->local;
cc32abd4 942 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
7578d575
AN		 943 u32 changed = 0;
944 int ret;
cc32abd4 945
9607e6b6 946 if (!ieee80211_sdata_running(sdata))
cc32abd4
JB		 947 return;
948
8d61ffa5 949 sdata_lock(sdata);
77fdaa12
JB		 950 if (!ifmgd->associated)
951 goto out;
cc32abd4 952
34a3740d 953 mutex_lock(&local->mtx);
33787fc4 954 ret = ieee80211_vif_change_channel(sdata, &changed);
34a3740d 955 mutex_unlock(&local->mtx);
7578d575
AN		 956 if (ret) {
957 sdata_info(sdata,
958 "vif channel switch failed, disconnecting\n");
959 ieee80211_queue_work(&sdata->local->hw,
960 &ifmgd->csa_connection_drop_work);
961 goto out;
962 }
675a0b04 963
7578d575 964 if (!local->use_chanctx) {
33787fc4 965 local->_oper_chandef = sdata->csa_chandef;
7578d575
AN		 966 /* Call "hw_config" only if doing sw channel switch.
967 * Otherwise update the channel directly
968 */
969 if (!local->ops->channel_switch)
970 ieee80211_hw_config(local, 0);
971 else
972 local->hw.conf.chandef = local->_oper_chandef;
5ce6e438 973 }
77fdaa12 974
cc32abd4 975 /* XXX: shouldn't really modify cfg80211-owned data! */
33787fc4 976 ifmgd->associated->channel = sdata->csa_chandef.chan;
cc32abd4 977
57eebdf3 978 /* XXX: wait for a beacon first? */
675a0b04 979 ieee80211_wake_queues_by_reason(&local->hw,
445ea4e8 980 IEEE80211_MAX_QUEUE_MAP,
cc32abd4 981 IEEE80211_QUEUE_STOP_REASON_CSA);
7578d575
AN		 982
983 ieee80211_bss_info_change_notify(sdata, changed);
984
77fdaa12 985 out:
7578d575 986 sdata->vif.csa_active = false;
77fdaa12 987 ifmgd->flags &= ~IEEE80211_STA_CSA_RECEIVED;
8d61ffa5 988 sdata_unlock(sdata);
cc32abd4
JB		 989}
990
5ce6e438
JB		 991void ieee80211_chswitch_done(struct ieee80211_vif *vif, bool success)
992{
55de908a
JB		 993 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
994 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
5ce6e438
JB		 995
996 trace_api_chswitch_done(sdata, success);
997 if (!success) {
882a7c69
JB		 998 sdata_info(sdata,
999 "driver channel switch failed, disconnecting\n");
1000 ieee80211_queue_work(&sdata->local->hw,
1001 &ifmgd->csa_connection_drop_work);
1002 } else {
1003 ieee80211_queue_work(&sdata->local->hw, &ifmgd->chswitch_work);
5ce6e438 1004 }
5ce6e438
JB		 1005}
1006EXPORT_SYMBOL(ieee80211_chswitch_done);
1007
cc32abd4
JB		 1008static void ieee80211_chswitch_timer(unsigned long data)
1009{
1010 struct ieee80211_sub_if_data *sdata =
1011 (struct ieee80211_sub_if_data *) data;
5bb644a0 1012
9b7d72c1 1013 ieee80211_queue_work(&sdata->local->hw, &sdata->u.mgd.chswitch_work);
cc32abd4
JB		 1014}
1015
37799e52 1016static void
4a3cb702 1017ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
04a161f4
JB		 1018 u64 timestamp, struct ieee802_11_elems *elems,
1019 bool beacon)
cc32abd4 1020{
b4f286a1 1021 struct ieee80211_local *local = sdata->local;
cc32abd4 1022 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
37799e52 1023 struct cfg80211_bss *cbss = ifmgd->associated;
55de908a 1024 struct ieee80211_chanctx *chanctx;
e6b7cde4 1025 enum ieee80211_band current_band;
c0f17eb9 1026 struct ieee80211_csa_ie csa_ie;
e6b7cde4 1027 int res;
cc32abd4 1028
8d61ffa5 1029 sdata_assert_lock(sdata);
77fdaa12 1030
37799e52 1031 if (!cbss)
cc32abd4
JB		 1032 return;
1033
b4f286a1 1034 if (local->scanning)
cc32abd4
JB		 1035 return;
1036
37799e52 1037 /* disregard subsequent announcements if we are already processing */
cc32abd4
JB		 1038 if (ifmgd->flags & IEEE80211_STA_CSA_RECEIVED)
1039 return;
1040
e6b7cde4 1041 current_band = cbss->channel->band;
c0f17eb9 1042 memset(&csa_ie, 0, sizeof(csa_ie));
e6b7cde4
SW		 1043 res = ieee80211_parse_ch_switch_ie(sdata, elems, beacon, current_band,
1044 ifmgd->flags,
c0f17eb9 1045 ifmgd->associated->bssid, &csa_ie);
e6b7cde4 1046 if (res < 0)
b4f286a1 1047 ieee80211_queue_work(&local->hw,
882a7c69 1048 &ifmgd->csa_connection_drop_work);
e6b7cde4 1049 if (res)
cc32abd4 1050 return;
cd64f2a9 1051
c0f17eb9 1052 if (!cfg80211_chandef_usable(local->hw.wiphy, &csa_ie.chandef,
85220d71
JB		 1053 IEEE80211_CHAN_DISABLED)) {
1054 sdata_info(sdata,
1055 "AP %pM switches to unsupported channel (%d MHz, width:%d, CF1/2: %d/%d MHz), disconnecting\n",
e6b7cde4 1056 ifmgd->associated->bssid,
c0f17eb9
CYY		 1057 csa_ie.chandef.chan->center_freq,
1058 csa_ie.chandef.width, csa_ie.chandef.center_freq1,
1059 csa_ie.chandef.center_freq2);
85220d71
JB		 1060 ieee80211_queue_work(&local->hw,
1061 &ifmgd->csa_connection_drop_work);
1062 return;
1063 }
1064
57eebdf3
JB		 1065 ifmgd->flags |= IEEE80211_STA_CSA_RECEIVED;
1066
7578d575 1067 mutex_lock(&local->chanctx_mtx);
b4f286a1 1068 if (local->use_chanctx) {
7578d575
AN		 1069 u32 num_chanctx = 0;
1070 list_for_each_entry(chanctx, &local->chanctx_list, list)
1071 num_chanctx++;
1072
1073 if (num_chanctx > 1 ||
1074 !(local->hw.flags & IEEE80211_HW_CHANCTX_STA_CSA)) {
1075 sdata_info(sdata,
1076 "not handling chan-switch with channel contexts\n");
1077 ieee80211_queue_work(&local->hw,
1078 &ifmgd->csa_connection_drop_work);
1079 mutex_unlock(&local->chanctx_mtx);
1080 return;
1081 }
55de908a
JB		 1082 }
1083
55de908a 1084 if (WARN_ON(!rcu_access_pointer(sdata->vif.chanctx_conf))) {
7578d575
AN		 1085 ieee80211_queue_work(&local->hw,
1086 &ifmgd->csa_connection_drop_work);
b4f286a1 1087 mutex_unlock(&local->chanctx_mtx);
55de908a
JB		 1088 return;
1089 }
1090 chanctx = container_of(rcu_access_pointer(sdata->vif.chanctx_conf),
1091 struct ieee80211_chanctx, conf);
c0166da9 1092 if (ieee80211_chanctx_refcount(local, chanctx) > 1) {
55de908a
JB		 1093 sdata_info(sdata,
1094 "channel switch with multiple interfaces on the same channel, disconnecting\n");
b4f286a1 1095 ieee80211_queue_work(&local->hw,
55de908a 1096 &ifmgd->csa_connection_drop_work);
b4f286a1 1097 mutex_unlock(&local->chanctx_mtx);
55de908a
JB		 1098 return;
1099 }
b4f286a1 1100 mutex_unlock(&local->chanctx_mtx);
55de908a 1101
33787fc4 1102 sdata->csa_chandef = csa_ie.chandef;
c46a73f3 1103 sdata->vif.csa_active = true;
55de908a 1104
c0f17eb9 1105 if (csa_ie.mode)
b4f286a1 1106 ieee80211_stop_queues_by_reason(&local->hw,
445ea4e8 1107 IEEE80211_MAX_QUEUE_MAP,
57eebdf3
JB		 1108 IEEE80211_QUEUE_STOP_REASON_CSA);
1109
b4f286a1 1110 if (local->ops->channel_switch) {
5ce6e438 1111 /* use driver's channel switch callback */
57eebdf3
JB		 1112 struct ieee80211_channel_switch ch_switch = {
1113 .timestamp = timestamp,
c0f17eb9
CYY		 1114 .block_tx = csa_ie.mode,
1115 .chandef = csa_ie.chandef,
1116 .count = csa_ie.count,
57eebdf3
JB		 1117 };
1118
b4f286a1 1119 drv_channel_switch(local, &ch_switch);
5ce6e438
JB		 1120 return;
1121 }
1122
1123 /* channel switch handled in software */
c0f17eb9 1124 if (csa_ie.count <= 1)
b4f286a1 1125 ieee80211_queue_work(&local->hw, &ifmgd->chswitch_work);
57eebdf3 1126 else
cc32abd4 1127 mod_timer(&ifmgd->chswitch_timer,
c0f17eb9 1128 TU_TO_EXP_TIME(csa_ie.count * cbss->beacon_interval));
cc32abd4
JB		 1129}
1130
1ea6f9c0
JB		 1131static u32 ieee80211_handle_pwr_constr(struct ieee80211_sub_if_data *sdata,
1132 struct ieee80211_channel *channel,
1133 const u8 *country_ie, u8 country_ie_len,
1134 const u8 *pwr_constr_elem)
cc32abd4 1135{
04b7b2ff
JB		 1136 struct ieee80211_country_ie_triplet *triplet;
1137 int chan = ieee80211_frequency_to_channel(channel->center_freq);
1138 int i, chan_pwr, chan_increment, new_ap_level;
1139 bool have_chan_pwr = false;
cc32abd4 1140
04b7b2ff
JB		 1141 /* Invalid IE */
1142 if (country_ie_len % 2 || country_ie_len < IEEE80211_COUNTRY_IE_MIN_LEN)
1ea6f9c0 1143 return 0;
cc32abd4 1144
04b7b2ff
JB		 1145 triplet = (void *)(country_ie + 3);
1146 country_ie_len -= 3;
1147
1148 switch (channel->band) {
1149 default:
1150 WARN_ON_ONCE(1);
1151 /* fall through */
1152 case IEEE80211_BAND_2GHZ:
1153 case IEEE80211_BAND_60GHZ:
1154 chan_increment = 1;
1155 break;
1156 case IEEE80211_BAND_5GHZ:
1157 chan_increment = 4;
1158 break;
cc32abd4 1159 }
04b7b2ff
JB		 1160
1161 /* find channel */
1162 while (country_ie_len >= 3) {
1163 u8 first_channel = triplet->chans.first_channel;
1164
1165 if (first_channel >= IEEE80211_COUNTRY_EXTENSION_ID)
1166 goto next;
1167
1168 for (i = 0; i < triplet->chans.num_channels; i++) {
1169 if (first_channel + i * chan_increment == chan) {
1170 have_chan_pwr = true;
1171 chan_pwr = triplet->chans.max_power;
1172 break;
1173 }
1174 }
1175 if (have_chan_pwr)
1176 break;
1177
1178 next:
1179 triplet++;
1180 country_ie_len -= 3;
1181 }
1182
1183 if (!have_chan_pwr)
1ea6f9c0 1184 return 0;
04b7b2ff
JB		 1185
1186 new_ap_level = max_t(int, 0, chan_pwr - *pwr_constr_elem);
1187
1ea6f9c0
JB		 1188 if (sdata->ap_power_level == new_ap_level)
1189 return 0;
04b7b2ff
JB		 1190
1191 sdata_info(sdata,
1192 "Limiting TX power to %d (%d - %d) dBm as advertised by %pM\n",
1193 new_ap_level, chan_pwr, *pwr_constr_elem,
1194 sdata->u.mgd.bssid);
1ea6f9c0
JB		 1195 sdata->ap_power_level = new_ap_level;
1196 if (__ieee80211_recalc_txpower(sdata))
1197 return BSS_CHANGED_TXPOWER;
1198 return 0;
cc32abd4
JB		 1199}
1200
965bedad
JB		 1201/* powersave */
1202static void ieee80211_enable_ps(struct ieee80211_local *local,
1203 struct ieee80211_sub_if_data *sdata)
1204{
1205 struct ieee80211_conf *conf = &local->hw.conf;
1206
d5edaedc
JB		 1207 /*
1208 * If we are scanning right now then the parameters will
1209 * take effect when scan finishes.
1210 */
fbe9c429 1211 if (local->scanning)
d5edaedc
JB		 1212 return;
1213
965bedad
JB		 1214 if (conf->dynamic_ps_timeout > 0 &&
1215 !(local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)) {
1216 mod_timer(&local->dynamic_ps_timer, jiffies +
1217 msecs_to_jiffies(conf->dynamic_ps_timeout));
1218 } else {
1219 if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK)
1220 ieee80211_send_nullfunc(local, sdata, 1);
375177bf 1221
2a13052f
JO		 1222 if ((local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) &&
1223 (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS))
1224 return;
1225
1226 conf->flags |= IEEE80211_CONF_PS;
1227 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
965bedad
JB		 1228 }
1229}
1230
1231static void ieee80211_change_ps(struct ieee80211_local *local)
1232{
1233 struct ieee80211_conf *conf = &local->hw.conf;
1234
1235 if (local->ps_sdata) {
965bedad
JB		 1236 ieee80211_enable_ps(local, local->ps_sdata);
1237 } else if (conf->flags & IEEE80211_CONF_PS) {
1238 conf->flags &= ~IEEE80211_CONF_PS;
1239 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1240 del_timer_sync(&local->dynamic_ps_timer);
1241 cancel_work_sync(&local->dynamic_ps_enable_work);
1242 }
1243}
1244
808118cb
JY		 1245static bool ieee80211_powersave_allowed(struct ieee80211_sub_if_data *sdata)
1246{
1247 struct ieee80211_if_managed *mgd = &sdata->u.mgd;
1248 struct sta_info *sta = NULL;
c2c98fde 1249 bool authorized = false;
808118cb
JY		 1250
1251 if (!mgd->powersave)
1252 return false;
1253
05cb9108
JB		 1254 if (mgd->broken_ap)
1255 return false;
1256
808118cb
JY		 1257 if (!mgd->associated)
1258 return false;
1259
392b9ffb 1260 if (mgd->flags & IEEE80211_STA_CONNECTION_POLL)
808118cb
JY		 1261 return false;
1262
989c6505 1263 if (!mgd->have_beacon)
ce857888
AB		 1264 return false;
1265
808118cb
JY		 1266 rcu_read_lock();
1267 sta = sta_info_get(sdata, mgd->bssid);
1268 if (sta)
c2c98fde 1269 authorized = test_sta_flag(sta, WLAN_STA_AUTHORIZED);
808118cb
JY		 1270 rcu_read_unlock();
1271
c2c98fde 1272 return authorized;
808118cb
JY		 1273}
1274
965bedad 1275/* need to hold RTNL or interface lock */
10f644a4 1276void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency)
965bedad
JB		 1277{
1278 struct ieee80211_sub_if_data *sdata, *found = NULL;
1279 int count = 0;
195e294d 1280 int timeout;
965bedad
JB		 1281
1282 if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS)) {
1283 local->ps_sdata = NULL;
1284 return;
1285 }
1286
1287 list_for_each_entry(sdata, &local->interfaces, list) {
9607e6b6 1288 if (!ieee80211_sdata_running(sdata))
965bedad 1289 continue;
8c7914de
RM		 1290 if (sdata->vif.type == NL80211_IFTYPE_AP) {
1291 /* If an AP vif is found, then disable PS
1292 * by setting the count to zero thereby setting
1293 * ps_sdata to NULL.
1294 */
1295 count = 0;
1296 break;
1297 }
965bedad
JB		 1298 if (sdata->vif.type != NL80211_IFTYPE_STATION)
1299 continue;
1300 found = sdata;
1301 count++;
1302 }
1303
808118cb 1304 if (count == 1 && ieee80211_powersave_allowed(found)) {
10f644a4
JB		 1305 s32 beaconint_us;
1306
1307 if (latency < 0)
ed77134b 1308 latency = pm_qos_request(PM_QOS_NETWORK_LATENCY);
10f644a4
JB		 1309
1310 beaconint_us = ieee80211_tu_to_usec(
1311 found->vif.bss_conf.beacon_int);
1312
ff616381 1313 timeout = local->dynamic_ps_forced_timeout;
195e294d
JO		 1314 if (timeout < 0) {
1315 /*
ff616381
JO		 1316 * Go to full PSM if the user configures a very low
1317 * latency requirement.
0ab82b04
EP		 1318 * The 2000 second value is there for compatibility
1319 * until the PM_QOS_NETWORK_LATENCY is configured
1320 * with real values.
195e294d 1321 */
0ab82b04
EP		 1322 if (latency > (1900 * USEC_PER_MSEC) &&
1323 latency != (2000 * USEC_PER_SEC))
195e294d 1324 timeout = 0;
ff616381
JO		 1325 else
1326 timeout = 100;
195e294d 1327 }
09b85568 1328 local->hw.conf.dynamic_ps_timeout = timeout;
195e294d 1329
04fe2037 1330 if (beaconint_us > latency) {
10f644a4 1331 local->ps_sdata = NULL;
04fe2037 1332 } else {
04fe2037 1333 int maxslp = 1;
826262c3 1334 u8 dtimper = found->u.mgd.dtim_period;
56007a02
JB		 1335
1336 /* If the TIM IE is invalid, pretend the value is 1 */
1337 if (!dtimper)
1338 dtimper = 1;
1339 else if (dtimper > 1)
04fe2037
JB		 1340 maxslp = min_t(int, dtimper,
1341 latency / beaconint_us);
1342
9ccebe61 1343 local->hw.conf.max_sleep_period = maxslp;
56007a02 1344 local->hw.conf.ps_dtim_period = dtimper;
10f644a4 1345 local->ps_sdata = found;
04fe2037 1346 }
10f644a4 1347 } else {
965bedad 1348 local->ps_sdata = NULL;
10f644a4 1349 }
965bedad
JB		 1350
1351 ieee80211_change_ps(local);
1352}
1353
ab095877
EP		 1354void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata)
1355{
1356 bool ps_allowed = ieee80211_powersave_allowed(sdata);
1357
1358 if (sdata->vif.bss_conf.ps != ps_allowed) {
1359 sdata->vif.bss_conf.ps = ps_allowed;
1360 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_PS);
1361 }
1362}
1363
965bedad
JB		 1364void ieee80211_dynamic_ps_disable_work(struct work_struct *work)
1365{
1366 struct ieee80211_local *local =
1367 container_of(work, struct ieee80211_local,
1368 dynamic_ps_disable_work);
1369
1370 if (local->hw.conf.flags & IEEE80211_CONF_PS) {
1371 local->hw.conf.flags &= ~IEEE80211_CONF_PS;
1372 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1373 }
1374
1375 ieee80211_wake_queues_by_reason(&local->hw,
445ea4e8 1376 IEEE80211_MAX_QUEUE_MAP,
965bedad
JB		 1377 IEEE80211_QUEUE_STOP_REASON_PS);
1378}
1379
1380void ieee80211_dynamic_ps_enable_work(struct work_struct *work)
1381{
1382 struct ieee80211_local *local =
1383 container_of(work, struct ieee80211_local,
1384 dynamic_ps_enable_work);
1385 struct ieee80211_sub_if_data *sdata = local->ps_sdata;
5e34069c 1386 struct ieee80211_if_managed *ifmgd;
1ddc2867
RM		 1387 unsigned long flags;
1388 int q;
965bedad
JB		 1389
1390 /* can only happen when PS was just disabled anyway */
1391 if (!sdata)
1392 return;
1393
5e34069c
CL		 1394 ifmgd = &sdata->u.mgd;
1395
965bedad
JB		 1396 if (local->hw.conf.flags & IEEE80211_CONF_PS)
1397 return;
1398
09b85568 1399 if (local->hw.conf.dynamic_ps_timeout > 0) {
77b7023a
AN		 1400 /* don't enter PS if TX frames are pending */
1401 if (drv_tx_frames_pending(local)) {
1ddc2867
RM		 1402 mod_timer(&local->dynamic_ps_timer, jiffies +
1403 msecs_to_jiffies(
1404 local->hw.conf.dynamic_ps_timeout));
1405 return;
1406 }
77b7023a
AN		 1407
1408 /*
1409 * transmission can be stopped by others which leads to
1410 * dynamic_ps_timer expiry. Postpone the ps timer if it
1411 * is not the actual idle state.
1412 */
1413 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
1414 for (q = 0; q < local->hw.queues; q++) {
1415 if (local->queue_stop_reasons[q]) {
1416 spin_unlock_irqrestore(&local->queue_stop_reason_lock,
1417 flags);
1418 mod_timer(&local->dynamic_ps_timer, jiffies +
1419 msecs_to_jiffies(
1420 local->hw.conf.dynamic_ps_timeout));
1421 return;
1422 }
1423 }
1424 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
1ddc2867 1425 }
1ddc2867 1426
375177bf 1427 if ((local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) &&
9c38a8b4 1428 !(ifmgd->flags & IEEE80211_STA_NULLFUNC_ACKED)) {
a1598383 1429 if (drv_tx_frames_pending(local)) {
e8306f98
VN		 1430 mod_timer(&local->dynamic_ps_timer, jiffies +
1431 msecs_to_jiffies(
1432 local->hw.conf.dynamic_ps_timeout));
a1598383 1433 } else {
e8306f98
VN		 1434 ieee80211_send_nullfunc(local, sdata, 1);
1435 /* Flush to get the tx status of nullfunc frame */
39ecc01d 1436 ieee80211_flush_queues(local, sdata);
e8306f98 1437 }
f3e85b9e
VN		 1438 }
1439
2a13052f
JO		 1440 if (!((local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) &&
1441 (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK)) ||
375177bf
VN		 1442 (ifmgd->flags & IEEE80211_STA_NULLFUNC_ACKED)) {
1443 ifmgd->flags &= ~IEEE80211_STA_NULLFUNC_ACKED;
1444 local->hw.conf.flags |= IEEE80211_CONF_PS;
1445 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1446 }
965bedad
JB		 1447}
1448
1449void ieee80211_dynamic_ps_timer(unsigned long data)
1450{
1451 struct ieee80211_local *local = (void *) data;
1452
78f1a8b7 1453 if (local->quiescing || local->suspended)
5bb644a0
JB		 1454 return;
1455
42935eca 1456 ieee80211_queue_work(&local->hw, &local->dynamic_ps_enable_work);
965bedad
JB		 1457}
1458
164eb02d
SW		 1459void ieee80211_dfs_cac_timer_work(struct work_struct *work)
1460{
1461 struct delayed_work *delayed_work =
1462 container_of(work, struct delayed_work, work);
1463 struct ieee80211_sub_if_data *sdata =
1464 container_of(delayed_work, struct ieee80211_sub_if_data,
1465 dfs_cac_timer_work);
d2859df5 1466 struct cfg80211_chan_def chandef = sdata->vif.bss_conf.chandef;
164eb02d 1467
34a3740d
JB		 1468 mutex_lock(&sdata->local->mtx);
1469 if (sdata->wdev.cac_started) {
1470 ieee80211_vif_release_channel(sdata);
1471 cfg80211_cac_event(sdata->dev, &chandef,
1472 NL80211_RADAR_CAC_FINISHED,
1473 GFP_KERNEL);
1474 }
1475 mutex_unlock(&sdata->local->mtx);
164eb02d
SW		 1476}
1477
60f8b39c 1478/* MLME */
7d25745d 1479static bool ieee80211_sta_wmm_params(struct ieee80211_local *local,
4ced3f74 1480 struct ieee80211_sub_if_data *sdata,
4a3cb702 1481 const u8 *wmm_param, size_t wmm_param_len)
f0706e82 1482{
f0706e82 1483 struct ieee80211_tx_queue_params params;
4ced3f74 1484 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
f0706e82
JB		 1485 size_t left;
1486 int count;
4a3cb702
JB		 1487 const u8 *pos;
1488 u8 uapsd_queues = 0;
f0706e82 1489
e1b3ec1a 1490 if (!local->ops->conf_tx)
7d25745d 1491 return false;
e1b3ec1a 1492
32c5057b 1493 if (local->hw.queues < IEEE80211_NUM_ACS)
7d25745d 1494 return false;
3434fbd3
JB		 1495
1496 if (!wmm_param)
7d25745d 1497 return false;
3434fbd3 1498
f0706e82 1499 if (wmm_param_len < 8 || wmm_param[5] /* version */ != 1)
7d25745d 1500 return false;
ab13315a
KV		 1501
1502 if (ifmgd->flags & IEEE80211_STA_UAPSD_ENABLED)
dc41e4d4 1503 uapsd_queues = ifmgd->uapsd_queues;
ab13315a 1504
f0706e82 1505 count = wmm_param[6] & 0x0f;
46900298 1506 if (count == ifmgd->wmm_last_param_set)
7d25745d 1507 return false;
46900298 1508 ifmgd->wmm_last_param_set = count;
f0706e82
JB		 1509
1510 pos = wmm_param + 8;
1511 left = wmm_param_len - 8;
1512
1513 memset(&params, 0, sizeof(params));
1514
00e96dec 1515 sdata->wmm_acm = 0;
f0706e82
JB		 1516 for (; left >= 4; left -= 4, pos += 4) {
1517 int aci = (pos[0] >> 5) & 0x03;
1518 int acm = (pos[0] >> 4) & 0x01;
ab13315a 1519 bool uapsd = false;
f0706e82
JB		 1520 int queue;
1521
1522 switch (aci) {
0eeb59fe 1523 case 1: /* AC_BK */
e100bb64 1524 queue = 3;
988c0f72 1525 if (acm)
00e96dec 1526 sdata->wmm_acm |= BIT(1) | BIT(2); /* BK/- */
ab13315a
KV		 1527 if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BK)
1528 uapsd = true;
f0706e82 1529 break;
0eeb59fe 1530 case 2: /* AC_VI */
e100bb64 1531 queue = 1;
988c0f72 1532 if (acm)
00e96dec 1533 sdata->wmm_acm |= BIT(4) | BIT(5); /* CL/VI */
ab13315a
KV		 1534 if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VI)
1535 uapsd = true;
f0706e82 1536 break;
0eeb59fe 1537 case 3: /* AC_VO */
e100bb64 1538 queue = 0;
988c0f72 1539 if (acm)
00e96dec 1540 sdata->wmm_acm |= BIT(6) | BIT(7); /* VO/NC */
ab13315a
KV		 1541 if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VO)
1542 uapsd = true;
f0706e82 1543 break;
0eeb59fe 1544 case 0: /* AC_BE */
f0706e82 1545 default:
e100bb64 1546 queue = 2;
988c0f72 1547 if (acm)
00e96dec 1548 sdata->wmm_acm |= BIT(0) | BIT(3); /* BE/EE */
ab13315a
KV		 1549 if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BE)
1550 uapsd = true;
f0706e82
JB		 1551 break;
1552 }
1553
1554 params.aifs = pos[0] & 0x0f;
1555 params.cw_max = ecw2cw((pos[1] & 0xf0) >> 4);
1556 params.cw_min = ecw2cw(pos[1] & 0x0f);
f434b2d1 1557 params.txop = get_unaligned_le16(pos + 2);
908f8d07 1558 params.acm = acm;
ab13315a
KV		 1559 params.uapsd = uapsd;
1560
bdcbd8e0
JB		 1561 mlme_dbg(sdata,
1562 "WMM queue=%d aci=%d acm=%d aifs=%d cWmin=%d cWmax=%d txop=%d uapsd=%d\n",
1563 queue, aci, acm,
1564 params.aifs, params.cw_min, params.cw_max,
1565 params.txop, params.uapsd);
f6f3def3
EP		 1566 sdata->tx_conf[queue] = params;
1567 if (drv_conf_tx(local, sdata, queue, &params))
bdcbd8e0
JB		 1568 sdata_err(sdata,
1569 "failed to set TX queue parameters for queue %d\n",
1570 queue);
f0706e82 1571 }
e1b3ec1a
SG		 1572
1573 /* enable WMM or activate new settings */
4ced3f74 1574 sdata->vif.bss_conf.qos = true;
7d25745d 1575 return true;
f0706e82
JB		 1576}
1577
925e64c3
SG		 1578static void __ieee80211_stop_poll(struct ieee80211_sub_if_data *sdata)
1579{
1580 lockdep_assert_held(&sdata->local->mtx);
1581
392b9ffb 1582 sdata->u.mgd.flags &= ~IEEE80211_STA_CONNECTION_POLL;
925e64c3
SG		 1583 ieee80211_run_deferred_scan(sdata->local);
1584}
1585
1586static void ieee80211_stop_poll(struct ieee80211_sub_if_data *sdata)
1587{
1588 mutex_lock(&sdata->local->mtx);
1589 __ieee80211_stop_poll(sdata);
1590 mutex_unlock(&sdata->local->mtx);
1591}
1592
7a5158ef
JB		 1593static u32 ieee80211_handle_bss_capability(struct ieee80211_sub_if_data *sdata,
1594 u16 capab, bool erp_valid, u8 erp)
5628221c 1595{
bda3933a 1596 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
471b3efd 1597 u32 changed = 0;
7a5158ef
JB		 1598 bool use_protection;
1599 bool use_short_preamble;
1600 bool use_short_slot;
1601
1602 if (erp_valid) {
1603 use_protection = (erp & WLAN_ERP_USE_PROTECTION) != 0;
1604 use_short_preamble = (erp & WLAN_ERP_BARKER_PREAMBLE) == 0;
1605 } else {
1606 use_protection = false;
1607 use_short_preamble = !!(capab & WLAN_CAPABILITY_SHORT_PREAMBLE);
1608 }
1609
1610 use_short_slot = !!(capab & WLAN_CAPABILITY_SHORT_SLOT_TIME);
55de908a 1611 if (ieee80211_get_sdata_band(sdata) == IEEE80211_BAND_5GHZ)
43d35343 1612 use_short_slot = true;
5628221c 1613
471b3efd 1614 if (use_protection != bss_conf->use_cts_prot) {
471b3efd
JB		 1615 bss_conf->use_cts_prot = use_protection;
1616 changed |= BSS_CHANGED_ERP_CTS_PROT;
5628221c 1617 }
7e9ed188 1618
d43c7b37 1619 if (use_short_preamble != bss_conf->use_short_preamble) {
d43c7b37 1620 bss_conf->use_short_preamble = use_short_preamble;
471b3efd 1621 changed |= BSS_CHANGED_ERP_PREAMBLE;
7e9ed188 1622 }
d9430a32 1623
7a5158ef 1624 if (use_short_slot != bss_conf->use_short_slot) {
7a5158ef
JB		 1625 bss_conf->use_short_slot = use_short_slot;
1626 changed |= BSS_CHANGED_ERP_SLOT;
50c4afb9
JL		 1627 }
1628
1629 return changed;
1630}
1631
f698d856 1632static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata,
0c1ad2ca 1633 struct cfg80211_bss *cbss,
ae5eb026 1634 u32 bss_info_changed)
f0706e82 1635{
0c1ad2ca 1636 struct ieee80211_bss *bss = (void *)cbss->priv;
471b3efd 1637 struct ieee80211_local *local = sdata->local;
68542962 1638 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
d6f2da5b 1639
ae5eb026 1640 bss_info_changed |= BSS_CHANGED_ASSOC;
77fdaa12 1641 bss_info_changed |= ieee80211_handle_bss_capability(sdata,
50ae34a2 1642 bss_conf->assoc_capability, bss->has_erp_value, bss->erp_value);
21c0cbe7 1643
7ccc8bd7 1644 sdata->u.mgd.beacon_timeout = usecs_to_jiffies(ieee80211_tu_to_usec(
59c1ec2b 1645 beacon_loss_count * bss_conf->beacon_int));
7ccc8bd7 1646
0c1ad2ca
JB		 1647 sdata->u.mgd.associated = cbss;
1648 memcpy(sdata->u.mgd.bssid, cbss->bssid, ETH_ALEN);
f0706e82 1649
17e4ec14
JM		 1650 sdata->u.mgd.flags |= IEEE80211_STA_RESET_SIGNAL_AVE;
1651
488dd7b5 1652 if (sdata->vif.p2p) {
9caf0364 1653 const struct cfg80211_bss_ies *ies;
488dd7b5 1654
9caf0364
JB		 1655 rcu_read_lock();
1656 ies = rcu_dereference(cbss->ies);
1657 if (ies) {
9caf0364
JB		 1658 int ret;
1659
1660 ret = cfg80211_get_p2p_attr(
1661 ies->data, ies->len,
1662 IEEE80211_P2P_ATTR_ABSENCE_NOTICE,
67baf663
JD		 1663 (u8 *) &bss_conf->p2p_noa_attr,
1664 sizeof(bss_conf->p2p_noa_attr));
9caf0364 1665 if (ret >= 2) {
67baf663
JD		 1666 sdata->u.mgd.p2p_noa_index =
1667 bss_conf->p2p_noa_attr.index;
9caf0364 1668 bss_info_changed |= BSS_CHANGED_P2P_PS;
9caf0364 1669 }
488dd7b5 1670 }
9caf0364 1671 rcu_read_unlock();
488dd7b5
JB		 1672 }
1673
b291ba11 1674 /* just to be sure */
925e64c3 1675 ieee80211_stop_poll(sdata);
b291ba11 1676
9ac19a90 1677 ieee80211_led_assoc(local, 1);
9306102e 1678
989c6505 1679 if (sdata->u.mgd.have_beacon) {
826262c3
JB		 1680 /*
1681 * If the AP is buggy we may get here with no DTIM period
1682 * known, so assume it's 1 which is the only safe assumption
1683 * in that case, although if the TIM IE is broken powersave
1684 * probably just won't work at all.
1685 */
1686 bss_conf->dtim_period = sdata->u.mgd.dtim_period ?: 1;
817cee76 1687 bss_conf->beacon_rate = bss->beacon_rate;
989c6505 1688 bss_info_changed |= BSS_CHANGED_BEACON_INFO;
826262c3 1689 } else {
817cee76 1690 bss_conf->beacon_rate = NULL;
e5b900d2 1691 bss_conf->dtim_period = 0;
826262c3 1692 }
e5b900d2 1693
68542962 1694 bss_conf->assoc = 1;
9cef8737 1695
a97c13c3 1696 /* Tell the driver to monitor connection quality (if supported) */
ea086359 1697 if (sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI &&
68542962 1698 bss_conf->cqm_rssi_thold)
a97c13c3
JO		 1699 bss_info_changed |= BSS_CHANGED_CQM;
1700
68542962 1701 /* Enable ARP filtering */
0f19b41e 1702 if (bss_conf->arp_addr_cnt)
68542962 1703 bss_info_changed |= BSS_CHANGED_ARP_FILTER;
68542962 1704
ae5eb026 1705 ieee80211_bss_info_change_notify(sdata, bss_info_changed);
f0706e82 1706
056508dc
JB		 1707 mutex_lock(&local->iflist_mtx);
1708 ieee80211_recalc_ps(local, -1);
1709 mutex_unlock(&local->iflist_mtx);
e0cb686f 1710
04ecd257 1711 ieee80211_recalc_smps(sdata);
ab095877
EP		 1712 ieee80211_recalc_ps_vif(sdata);
1713
9ac19a90 1714 netif_carrier_on(sdata->dev);
f0706e82
JB		 1715}
1716
e69e95db 1717static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata,
37ad3888
JB		 1718 u16 stype, u16 reason, bool tx,
1719 u8 *frame_buf)
aa458d17 1720{
46900298 1721 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
aa458d17 1722 struct ieee80211_local *local = sdata->local;
3cc5240b 1723 u32 changed = 0;
aa458d17 1724
8d61ffa5 1725 sdata_assert_lock(sdata);
77fdaa12 1726
37ad3888
JB		 1727 if (WARN_ON_ONCE(tx && !frame_buf))
1728 return;
1729
b291ba11
JB		 1730 if (WARN_ON(!ifmgd->associated))
1731 return;
1732
79543d8e
DS		 1733 ieee80211_stop_poll(sdata);
1734
77fdaa12 1735 ifmgd->associated = NULL;
aa458d17
TW		 1736 netif_carrier_off(sdata->dev);
1737
88bc40e8
EP		 1738 /*
1739 * if we want to get out of ps before disassoc (why?) we have
1740 * to do it before sending disassoc, as otherwise the null-packet
1741 * won't be valid.
1742 */
1743 if (local->hw.conf.flags & IEEE80211_CONF_PS) {
1744 local->hw.conf.flags &= ~IEEE80211_CONF_PS;
1745 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1746 }
1747 local->ps_sdata = NULL;
1748
ab095877
EP		 1749 /* disable per-vif ps */
1750 ieee80211_recalc_ps_vif(sdata);
1751
f823981e
EP		 1752 /* flush out any pending frame (e.g. DELBA) before deauth/disassoc */
1753 if (tx)
39ecc01d 1754 ieee80211_flush_queues(local, sdata);
f823981e 1755
37ad3888
JB		 1756 /* deauthenticate/disassociate now */
1757 if (tx || frame_buf)
88a9e31c
EP		 1758 ieee80211_send_deauth_disassoc(sdata, ifmgd->bssid, stype,
1759 reason, tx, frame_buf);
37ad3888
JB		 1760
1761 /* flush out frame */
1762 if (tx)
39ecc01d 1763 ieee80211_flush_queues(local, sdata);
37ad3888 1764
88a9e31c
EP		 1765 /* clear bssid only after building the needed mgmt frames */
1766 memset(ifmgd->bssid, 0, ETH_ALEN);
1767
37ad3888 1768 /* remove AP and TDLS peers */
d34ba216 1769 sta_info_flush(sdata);
37ad3888
JB		 1770
1771 /* finally reset all BSS / config parameters */
f5e5bf25
TW		 1772 changed |= ieee80211_reset_erp_info(sdata);
1773
f5e5bf25 1774 ieee80211_led_assoc(local, 0);
ae5eb026
JB		 1775 changed |= BSS_CHANGED_ASSOC;
1776 sdata->vif.bss_conf.assoc = false;
f5e5bf25 1777
67baf663
JD		 1778 ifmgd->p2p_noa_index = -1;
1779 memset(&sdata->vif.bss_conf.p2p_noa_attr, 0,
1780 sizeof(sdata->vif.bss_conf.p2p_noa_attr));
488dd7b5 1781
dd5ecfea 1782 /* on the next assoc, re-program HT/VHT parameters */
ef96a842
BG		 1783 memset(&ifmgd->ht_capa, 0, sizeof(ifmgd->ht_capa));
1784 memset(&ifmgd->ht_capa_mask, 0, sizeof(ifmgd->ht_capa_mask));
dd5ecfea
JB		 1785 memset(&ifmgd->vht_capa, 0, sizeof(ifmgd->vht_capa));
1786 memset(&ifmgd->vht_capa_mask, 0, sizeof(ifmgd->vht_capa_mask));
413ad50a 1787
1ea6f9c0 1788 sdata->ap_power_level = IEEE80211_UNSET_POWER_LEVEL;
a8302de9 1789
520eb820
KV		 1790 del_timer_sync(&local->dynamic_ps_timer);
1791 cancel_work_sync(&local->dynamic_ps_enable_work);
1792
68542962 1793 /* Disable ARP filtering */
0f19b41e 1794 if (sdata->vif.bss_conf.arp_addr_cnt)
68542962 1795 changed |= BSS_CHANGED_ARP_FILTER;
68542962 1796
3abead59
JB		 1797 sdata->vif.bss_conf.qos = false;
1798 changed |= BSS_CHANGED_QOS;
1799
0aaffa9b
JB		 1800 /* The BSSID (not really interesting) and HT changed */
1801 changed |= BSS_CHANGED_BSSID | BSS_CHANGED_HT;
ae5eb026 1802 ieee80211_bss_info_change_notify(sdata, changed);
8e268e47 1803
3abead59
JB		 1804 /* disassociated - set to defaults now */
1805 ieee80211_set_wmm_default(sdata, false);
1806
b9dcf712
JB		 1807 del_timer_sync(&sdata->u.mgd.conn_mon_timer);
1808 del_timer_sync(&sdata->u.mgd.bcn_mon_timer);
1809 del_timer_sync(&sdata->u.mgd.timer);
1810 del_timer_sync(&sdata->u.mgd.chswitch_timer);
2d9957cc 1811
826262c3 1812 sdata->vif.bss_conf.dtim_period = 0;
817cee76
AB		 1813 sdata->vif.bss_conf.beacon_rate = NULL;
1814
989c6505 1815 ifmgd->have_beacon = false;
826262c3 1816
028e8da0 1817 ifmgd->flags = 0;
34a3740d 1818 mutex_lock(&local->mtx);
028e8da0 1819 ieee80211_vif_release_channel(sdata);
34a3740d 1820 mutex_unlock(&local->mtx);
2475b1cc
MS		 1821
1822 sdata->encrypt_headroom = IEEE80211_ENCRYPT_HEADROOM;
aa458d17 1823}
f0706e82 1824
3cf335d5
KV		 1825void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
1826 struct ieee80211_hdr *hdr)
1827{
1828 /*
1829 * We can postpone the mgd.timer whenever receiving unicast frames
1830 * from AP because we know that the connection is working both ways
1831 * at that time. But multicast frames (and hence also beacons) must
1832 * be ignored here, because we need to trigger the timer during
b291ba11
JB		 1833 * data idle periods for sending the periodic probe request to the
1834 * AP we're connected to.
3cf335d5 1835 */
b291ba11
JB		 1836 if (is_multicast_ether_addr(hdr->addr1))
1837 return;
1838
be099e82 1839 ieee80211_sta_reset_conn_monitor(sdata);
3cf335d5 1840}
f0706e82 1841
4e5ff376
FF		 1842static void ieee80211_reset_ap_probe(struct ieee80211_sub_if_data *sdata)
1843{
1844 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
133d40f9 1845 struct ieee80211_local *local = sdata->local;
4e5ff376 1846
133d40f9 1847 mutex_lock(&local->mtx);
392b9ffb
SG		 1848 if (!(ifmgd->flags & IEEE80211_STA_CONNECTION_POLL))
1849 goto out;
4e5ff376 1850
925e64c3 1851 __ieee80211_stop_poll(sdata);
133d40f9
SG		 1852
1853 mutex_lock(&local->iflist_mtx);
1854 ieee80211_recalc_ps(local, -1);
1855 mutex_unlock(&local->iflist_mtx);
4e5ff376
FF		 1856
1857 if (sdata->local->hw.flags & IEEE80211_HW_CONNECTION_MONITOR)
133d40f9 1858 goto out;
4e5ff376
FF		 1859
1860 /*
1861 * We've received a probe response, but are not sure whether
1862 * we have or will be receiving any beacons or data, so let's
1863 * schedule the timers again, just in case.
1864 */
1865 ieee80211_sta_reset_beacon_monitor(sdata);
1866
1867 mod_timer(&ifmgd->conn_mon_timer,
1868 round_jiffies_up(jiffies +
1869 IEEE80211_CONNECTION_IDLE_TIME));
133d40f9 1870out:
133d40f9 1871 mutex_unlock(&local->mtx);
4e5ff376
FF		 1872}
1873
1874void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
04ac3c0e 1875 struct ieee80211_hdr *hdr, bool ack)
4e5ff376 1876{
75706d0e 1877 if (!ieee80211_is_data(hdr->frame_control))
4e5ff376
FF		 1878 return;
1879
4e5ff376
FF		 1880 if (ieee80211_is_nullfunc(hdr->frame_control) &&
1881 sdata->u.mgd.probe_send_count > 0) {
04ac3c0e 1882 if (ack)
cab1c7fd 1883 ieee80211_sta_reset_conn_monitor(sdata);
04ac3c0e
FF		 1884 else
1885 sdata->u.mgd.nullfunc_failed = true;
4e5ff376 1886 ieee80211_queue_work(&sdata->local->hw, &sdata->work);
cab1c7fd 1887 return;
4e5ff376 1888 }
cab1c7fd
WD		 1889
1890 if (ack)
1891 ieee80211_sta_reset_conn_monitor(sdata);
4e5ff376
FF		 1892}
1893
a43abf29
ML		 1894static void ieee80211_mgd_probe_ap_send(struct ieee80211_sub_if_data *sdata)
1895{
1896 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
1897 const u8 *ssid;
f01a067d 1898 u8 *dst = ifmgd->associated->bssid;
180205bd 1899 u8 unicast_limit = max(1, max_probe_tries - 3);
f01a067d
LR		 1900
1901 /*
1902 * Try sending broadcast probe requests for the last three
1903 * probe requests after the first ones failed since some
1904 * buggy APs only support broadcast probe requests.
1905 */
1906 if (ifmgd->probe_send_count >= unicast_limit)
1907 dst = NULL;
a43abf29 1908
4e5ff376
FF		 1909 /*
1910 * When the hardware reports an accurate Tx ACK status, it's
1911 * better to send a nullfunc frame instead of a probe request,
1912 * as it will kick us off the AP quickly if we aren't associated
1913 * anymore. The timeout will be reset if the frame is ACKed by
1914 * the AP.
1915 */
992e68bf
SD		 1916 ifmgd->probe_send_count++;
1917
04ac3c0e
FF		 1918 if (sdata->local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) {
1919 ifmgd->nullfunc_failed = false;
4e5ff376 1920 ieee80211_send_nullfunc(sdata->local, sdata, 0);
04ac3c0e 1921 } else {
88c868c4
SG		 1922 int ssid_len;
1923
9caf0364 1924 rcu_read_lock();
4e5ff376 1925 ssid = ieee80211_bss_get_ie(ifmgd->associated, WLAN_EID_SSID);
88c868c4
SG		 1926 if (WARN_ON_ONCE(ssid == NULL))
1927 ssid_len = 0;
1928 else
1929 ssid_len = ssid[1];
1930
1931 ieee80211_send_probe_req(sdata, dst, ssid + 2, ssid_len, NULL,
1672c0e3 1932 0, (u32) -1, true, 0,
55de908a 1933 ifmgd->associated->channel, false);
9caf0364 1934 rcu_read_unlock();
4e5ff376 1935 }
a43abf29 1936
180205bd 1937 ifmgd->probe_timeout = jiffies + msecs_to_jiffies(probe_wait_ms);
8d61ffa5 1938 run_again(sdata, ifmgd->probe_timeout);
f69b9c79 1939 if (sdata->local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)
39ecc01d 1940 ieee80211_flush_queues(sdata->local, sdata);
a43abf29
ML		 1941}
1942
b291ba11
JB		 1943static void ieee80211_mgd_probe_ap(struct ieee80211_sub_if_data *sdata,
1944 bool beacon)
04de8381 1945{
04de8381 1946 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
b291ba11 1947 bool already = false;
34bfc411 1948
9607e6b6 1949 if (!ieee80211_sdata_running(sdata))
0e2b6286
JB		 1950 return;
1951
8d61ffa5 1952 sdata_lock(sdata);
77fdaa12
JB		 1953
1954 if (!ifmgd->associated)
1955 goto out;
1956
133d40f9
SG		 1957 mutex_lock(&sdata->local->mtx);
1958
1959 if (sdata->local->tmp_channel || sdata->local->scanning) {
1960 mutex_unlock(&sdata->local->mtx);
1961 goto out;
1962 }
1963
a13fbe54 1964 if (beacon) {
bdcbd8e0 1965 mlme_dbg_ratelimited(sdata,
59c1ec2b
BG		 1966 "detected beacon loss from AP (missed %d beacons) - probing\n",
1967 beacon_loss_count);
bdcbd8e0 1968
a13fbe54
BG		 1969 ieee80211_cqm_rssi_notify(&sdata->vif,
1970 NL80211_CQM_RSSI_BEACON_LOSS_EVENT,
1971 GFP_KERNEL);
1972 }
04de8381 1973
b291ba11
JB		 1974 /*
1975 * The driver/our work has already reported this event or the
1976 * connection monitoring has kicked in and we have already sent
1977 * a probe request. Or maybe the AP died and the driver keeps
1978 * reporting until we disassociate...
1979 *
1980 * In either case we have to ignore the current call to this
1981 * function (except for setting the correct probe reason bit)
1982 * because otherwise we would reset the timer every time and
1983 * never check whether we received a probe response!
1984 */
392b9ffb 1985 if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL)
b291ba11
JB		 1986 already = true;
1987
12b5f34d
EP		 1988 ifmgd->flags |= IEEE80211_STA_CONNECTION_POLL;
1989
133d40f9
SG		 1990 mutex_unlock(&sdata->local->mtx);
1991
b291ba11
JB		 1992 if (already)
1993 goto out;
1994
4e751843
JB		 1995 mutex_lock(&sdata->local->iflist_mtx);
1996 ieee80211_recalc_ps(sdata->local, -1);
1997 mutex_unlock(&sdata->local->iflist_mtx);
1998
a43abf29
ML		 1999 ifmgd->probe_send_count = 0;
2000 ieee80211_mgd_probe_ap_send(sdata);
77fdaa12 2001 out:
8d61ffa5 2002 sdata_unlock(sdata);
04de8381
KV		 2003}
2004
a619a4c0
JO		 2005struct sk_buff *ieee80211_ap_probereq_get(struct ieee80211_hw *hw,
2006 struct ieee80211_vif *vif)
2007{
2008 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2009 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
d9b3b28b 2010 struct cfg80211_bss *cbss;
a619a4c0
JO		 2011 struct sk_buff *skb;
2012 const u8 *ssid;
88c868c4 2013 int ssid_len;
a619a4c0
JO		 2014
2015 if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
2016 return NULL;
2017
8d61ffa5 2018 sdata_assert_lock(sdata);
a619a4c0 2019
d9b3b28b
EP		 2020 if (ifmgd->associated)
2021 cbss = ifmgd->associated;
2022 else if (ifmgd->auth_data)
2023 cbss = ifmgd->auth_data->bss;
2024 else if (ifmgd->assoc_data)
2025 cbss = ifmgd->assoc_data->bss;
2026 else
a619a4c0
JO		 2027 return NULL;
2028
9caf0364 2029 rcu_read_lock();
d9b3b28b 2030 ssid = ieee80211_bss_get_ie(cbss, WLAN_EID_SSID);
88c868c4
SG		 2031 if (WARN_ON_ONCE(ssid == NULL))
2032 ssid_len = 0;
2033 else
2034 ssid_len = ssid[1];
2035
d9b3b28b 2036 skb = ieee80211_build_probe_req(sdata, cbss->bssid,
55de908a 2037 (u32) -1, cbss->channel,
6b77863b 2038 ssid + 2, ssid_len,
85a237fe 2039 NULL, 0, true);
9caf0364 2040 rcu_read_unlock();
a619a4c0
JO		 2041
2042 return skb;
2043}
2044EXPORT_SYMBOL(ieee80211_ap_probereq_get);
2045
eef9e54c 2046static void __ieee80211_disconnect(struct ieee80211_sub_if_data *sdata)
1e4dcd01
JO		 2047{
2048 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
6ae16775 2049 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
1e4dcd01 2050
8d61ffa5 2051 sdata_lock(sdata);
1e4dcd01 2052 if (!ifmgd->associated) {
8d61ffa5 2053 sdata_unlock(sdata);
1e4dcd01
JO		 2054 return;
2055 }
2056
37ad3888
JB		 2057 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
2058 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY,
eef9e54c 2059 true, frame_buf);
882a7c69 2060 ifmgd->flags &= ~IEEE80211_STA_CSA_RECEIVED;
7578d575 2061 sdata->vif.csa_active = false;
5b36ebd8 2062 ieee80211_wake_queues_by_reason(&sdata->local->hw,
445ea4e8 2063 IEEE80211_MAX_QUEUE_MAP,
5b36ebd8 2064 IEEE80211_QUEUE_STOP_REASON_CSA);
7da7cc1d 2065
6ff57cf8
JB		 2066 cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf,
2067 IEEE80211_DEAUTH_FRAME_LEN);
8d61ffa5 2068 sdata_unlock(sdata);
1e4dcd01
JO		 2069}
2070
cc74c0c7 2071static void ieee80211_beacon_connection_loss_work(struct work_struct *work)
b291ba11
JB		 2072{
2073 struct ieee80211_sub_if_data *sdata =
2074 container_of(work, struct ieee80211_sub_if_data,
1e4dcd01 2075 u.mgd.beacon_connection_loss_work);
a85e1d55
PS		 2076 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2077 struct sta_info *sta;
2078
2079 if (ifmgd->associated) {
30fa9047 2080 rcu_read_lock();
a85e1d55
PS		 2081 sta = sta_info_get(sdata, ifmgd->bssid);
2082 if (sta)
2083 sta->beacon_loss_count++;
30fa9047 2084 rcu_read_unlock();
a85e1d55 2085 }
b291ba11 2086
682bd38b 2087 if (ifmgd->connection_loss) {
882a7c69
JB		 2088 sdata_info(sdata, "Connection to AP %pM lost\n",
2089 ifmgd->bssid);
eef9e54c 2090 __ieee80211_disconnect(sdata);
882a7c69 2091 } else {
1e4dcd01 2092 ieee80211_mgd_probe_ap(sdata, true);
882a7c69
JB		 2093 }
2094}
2095
2096static void ieee80211_csa_connection_drop_work(struct work_struct *work)
2097{
2098 struct ieee80211_sub_if_data *sdata =
2099 container_of(work, struct ieee80211_sub_if_data,
2100 u.mgd.csa_connection_drop_work);
2101
eef9e54c 2102 __ieee80211_disconnect(sdata);
b291ba11
JB		 2103}
2104
04de8381
KV		 2105void ieee80211_beacon_loss(struct ieee80211_vif *vif)
2106{
2107 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
1e4dcd01 2108 struct ieee80211_hw *hw = &sdata->local->hw;
04de8381 2109
b5878a2d
JB		 2110 trace_api_beacon_loss(sdata);
2111
682bd38b 2112 sdata->u.mgd.connection_loss = false;
1e4dcd01 2113 ieee80211_queue_work(hw, &sdata->u.mgd.beacon_connection_loss_work);
04de8381
KV		 2114}
2115EXPORT_SYMBOL(ieee80211_beacon_loss);
2116
1e4dcd01
JO		 2117void ieee80211_connection_loss(struct ieee80211_vif *vif)
2118{
2119 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2120 struct ieee80211_hw *hw = &sdata->local->hw;
2121
b5878a2d
JB		 2122 trace_api_connection_loss(sdata);
2123
682bd38b 2124 sdata->u.mgd.connection_loss = true;
1e4dcd01
JO		 2125 ieee80211_queue_work(hw, &sdata->u.mgd.beacon_connection_loss_work);
2126}
2127EXPORT_SYMBOL(ieee80211_connection_loss);
2128
2129
66e67e41
JB		 2130static void ieee80211_destroy_auth_data(struct ieee80211_sub_if_data *sdata,
2131 bool assoc)
2132{
2133 struct ieee80211_mgd_auth_data *auth_data = sdata->u.mgd.auth_data;
2134
8d61ffa5 2135 sdata_assert_lock(sdata);
66e67e41 2136
66e67e41
JB		 2137 if (!assoc) {
2138 sta_info_destroy_addr(sdata, auth_data->bss->bssid);
2139
2140 memset(sdata->u.mgd.bssid, 0, ETH_ALEN);
2141 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID);
028e8da0 2142 sdata->u.mgd.flags = 0;
34a3740d 2143 mutex_lock(&sdata->local->mtx);
55de908a 2144 ieee80211_vif_release_channel(sdata);
34a3740d 2145 mutex_unlock(&sdata->local->mtx);
66e67e41
JB		 2146 }
2147
5b112d3d 2148 cfg80211_put_bss(sdata->local->hw.wiphy, auth_data->bss);
66e67e41
JB		 2149 kfree(auth_data);
2150 sdata->u.mgd.auth_data = NULL;
2151}
2152
2153static void ieee80211_auth_challenge(struct ieee80211_sub_if_data *sdata,
2154 struct ieee80211_mgmt *mgmt, size_t len)
2155{
1672c0e3 2156 struct ieee80211_local *local = sdata->local;
66e67e41
JB		 2157 struct ieee80211_mgd_auth_data *auth_data = sdata->u.mgd.auth_data;
2158 u8 *pos;
2159 struct ieee802_11_elems elems;
1672c0e3 2160 u32 tx_flags = 0;
66e67e41
JB		 2161
2162 pos = mgmt->u.auth.variable;
b2e506bf 2163 ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), false, &elems);
66e67e41
JB		 2164 if (!elems.challenge)
2165 return;
2166 auth_data->expected_transaction = 4;
a1845fc7 2167 drv_mgd_prepare_tx(sdata->local, sdata);
1672c0e3
JB		 2168 if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)
2169 tx_flags = IEEE80211_TX_CTL_REQ_TX_STATUS |
2170 IEEE80211_TX_INTFL_MLME_CONN_TX;
700e8ea6 2171 ieee80211_send_auth(sdata, 3, auth_data->algorithm, 0,
66e67e41
JB		 2172 elems.challenge - 2, elems.challenge_len + 2,
2173 auth_data->bss->bssid, auth_data->bss->bssid,
2174 auth_data->key, auth_data->key_len,
1672c0e3 2175 auth_data->key_idx, tx_flags);
66e67e41
JB		 2176}
2177
8d61ffa5
JB		 2178static void ieee80211_rx_mgmt_auth(struct ieee80211_sub_if_data *sdata,
2179 struct ieee80211_mgmt *mgmt, size_t len)
66e67e41
JB		 2180{
2181 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2182 u8 bssid[ETH_ALEN];
2183 u16 auth_alg, auth_transaction, status_code;
2184 struct sta_info *sta;
2185
8d61ffa5 2186 sdata_assert_lock(sdata);
66e67e41
JB		 2187
2188 if (len < 24 + 6)
8d61ffa5 2189 return;
66e67e41
JB		 2190
2191 if (!ifmgd->auth_data || ifmgd->auth_data->done)
8d61ffa5 2192 return;
66e67e41
JB		 2193
2194 memcpy(bssid, ifmgd->auth_data->bss->bssid, ETH_ALEN);
2195
b203ca39 2196 if (!ether_addr_equal(bssid, mgmt->bssid))
8d61ffa5 2197 return;
66e67e41
JB		 2198
2199 auth_alg = le16_to_cpu(mgmt->u.auth.auth_alg);
2200 auth_transaction = le16_to_cpu(mgmt->u.auth.auth_transaction);
2201 status_code = le16_to_cpu(mgmt->u.auth.status_code);
2202
2203 if (auth_alg != ifmgd->auth_data->algorithm ||
0f4126e8
JM		 2204 auth_transaction != ifmgd->auth_data->expected_transaction) {
2205 sdata_info(sdata, "%pM unexpected authentication state: alg %d (expected %d) transact %d (expected %d)\n",
2206 mgmt->sa, auth_alg, ifmgd->auth_data->algorithm,
2207 auth_transaction,
2208 ifmgd->auth_data->expected_transaction);
8d61ffa5 2209 return;
0f4126e8 2210 }
66e67e41
JB		 2211
2212 if (status_code != WLAN_STATUS_SUCCESS) {
bdcbd8e0
JB		 2213 sdata_info(sdata, "%pM denied authentication (status %d)\n",
2214 mgmt->sa, status_code);
dac211ec 2215 ieee80211_destroy_auth_data(sdata, false);
6ff57cf8 2216 cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len);
8d61ffa5 2217 return;
66e67e41
JB		 2218 }
2219
2220 switch (ifmgd->auth_data->algorithm) {
2221 case WLAN_AUTH_OPEN:
2222 case WLAN_AUTH_LEAP:
2223 case WLAN_AUTH_FT:
6b8ece3a 2224 case WLAN_AUTH_SAE:
66e67e41
JB		 2225 break;
2226 case WLAN_AUTH_SHARED_KEY:
2227 if (ifmgd->auth_data->expected_transaction != 4) {
2228 ieee80211_auth_challenge(sdata, mgmt, len);
2229 /* need another frame */
8d61ffa5 2230 return;
66e67e41
JB		 2231 }
2232 break;
2233 default:
2234 WARN_ONCE(1, "invalid auth alg %d",
2235 ifmgd->auth_data->algorithm);
8d61ffa5 2236 return;
66e67e41
JB		 2237 }
2238
bdcbd8e0 2239 sdata_info(sdata, "authenticated\n");
66e67e41
JB		 2240 ifmgd->auth_data->done = true;
2241 ifmgd->auth_data->timeout = jiffies + IEEE80211_AUTH_WAIT_ASSOC;
89afe614 2242 ifmgd->auth_data->timeout_started = true;
8d61ffa5 2243 run_again(sdata, ifmgd->auth_data->timeout);
66e67e41 2244
6b8ece3a
JM		 2245 if (ifmgd->auth_data->algorithm == WLAN_AUTH_SAE &&
2246 ifmgd->auth_data->expected_transaction != 2) {
2247 /*
2248 * Report auth frame to user space for processing since another
2249 * round of Authentication frames is still needed.
2250 */
6ff57cf8 2251 cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len);
8d61ffa5 2252 return;
6b8ece3a
JM		 2253 }
2254
66e67e41
JB		 2255 /* move station state to auth */
2256 mutex_lock(&sdata->local->sta_mtx);
2257 sta = sta_info_get(sdata, bssid);
2258 if (!sta) {
2259 WARN_ONCE(1, "%s: STA %pM not found", sdata->name, bssid);
2260 goto out_err;
2261 }
2262 if (sta_info_move_state(sta, IEEE80211_STA_AUTH)) {
bdcbd8e0 2263 sdata_info(sdata, "failed moving %pM to auth\n", bssid);
66e67e41
JB		 2264 goto out_err;
2265 }
2266 mutex_unlock(&sdata->local->sta_mtx);
2267
6ff57cf8 2268 cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len);
8d61ffa5 2269 return;
66e67e41
JB		 2270 out_err:
2271 mutex_unlock(&sdata->local->sta_mtx);
2272 /* ignore frame -- wait for timeout */
66e67e41
JB		 2273}
2274
dfa1ad29
CO		 2275#define case_WLAN(type) \
2276 case WLAN_REASON_##type: return #type
2277
2278static const char *ieee80211_get_reason_code_string(u16 reason_code)
2279{
2280 switch (reason_code) {
2281 case_WLAN(UNSPECIFIED);
2282 case_WLAN(PREV_AUTH_NOT_VALID);
2283 case_WLAN(DEAUTH_LEAVING);
2284 case_WLAN(DISASSOC_DUE_TO_INACTIVITY);
2285 case_WLAN(DISASSOC_AP_BUSY);
2286 case_WLAN(CLASS2_FRAME_FROM_NONAUTH_STA);
2287 case_WLAN(CLASS3_FRAME_FROM_NONASSOC_STA);
2288 case_WLAN(DISASSOC_STA_HAS_LEFT);
2289 case_WLAN(STA_REQ_ASSOC_WITHOUT_AUTH);
2290 case_WLAN(DISASSOC_BAD_POWER);
2291 case_WLAN(DISASSOC_BAD_SUPP_CHAN);
2292 case_WLAN(INVALID_IE);
2293 case_WLAN(MIC_FAILURE);
2294 case_WLAN(4WAY_HANDSHAKE_TIMEOUT);
2295 case_WLAN(GROUP_KEY_HANDSHAKE_TIMEOUT);
2296 case_WLAN(IE_DIFFERENT);
2297 case_WLAN(INVALID_GROUP_CIPHER);
2298 case_WLAN(INVALID_PAIRWISE_CIPHER);
2299 case_WLAN(INVALID_AKMP);
2300 case_WLAN(UNSUPP_RSN_VERSION);
2301 case_WLAN(INVALID_RSN_IE_CAP);
2302 case_WLAN(IEEE8021X_FAILED);
2303 case_WLAN(CIPHER_SUITE_REJECTED);
2304 case_WLAN(DISASSOC_UNSPECIFIED_QOS);
2305 case_WLAN(DISASSOC_QAP_NO_BANDWIDTH);
2306 case_WLAN(DISASSOC_LOW_ACK);
2307 case_WLAN(DISASSOC_QAP_EXCEED_TXOP);
2308 case_WLAN(QSTA_LEAVE_QBSS);
2309 case_WLAN(QSTA_NOT_USE);
2310 case_WLAN(QSTA_REQUIRE_SETUP);
2311 case_WLAN(QSTA_TIMEOUT);
2312 case_WLAN(QSTA_CIPHER_NOT_SUPP);
2313 case_WLAN(MESH_PEER_CANCELED);
2314 case_WLAN(MESH_MAX_PEERS);
2315 case_WLAN(MESH_CONFIG);
2316 case_WLAN(MESH_CLOSE);
2317 case_WLAN(MESH_MAX_RETRIES);
2318 case_WLAN(MESH_CONFIRM_TIMEOUT);
2319 case_WLAN(MESH_INVALID_GTK);
2320 case_WLAN(MESH_INCONSISTENT_PARAM);
2321 case_WLAN(MESH_INVALID_SECURITY);
2322 case_WLAN(MESH_PATH_ERROR);
2323 case_WLAN(MESH_PATH_NOFORWARD);
2324 case_WLAN(MESH_PATH_DEST_UNREACHABLE);
2325 case_WLAN(MAC_EXISTS_IN_MBSS);
2326 case_WLAN(MESH_CHAN_REGULATORY);
2327 case_WLAN(MESH_CHAN);
2328 default: return "<unknown>";
2329 }
2330}
66e67e41 2331
8d61ffa5
JB		 2332static void ieee80211_rx_mgmt_deauth(struct ieee80211_sub_if_data *sdata,
2333 struct ieee80211_mgmt *mgmt, size_t len)
f0706e82 2334{
46900298 2335 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
77fdaa12 2336 const u8 *bssid = NULL;
f0706e82
JB		 2337 u16 reason_code;
2338
8d61ffa5 2339 sdata_assert_lock(sdata);
66e67e41 2340
f4ea83dd 2341 if (len < 24 + 2)
8d61ffa5 2342 return;
f0706e82 2343
66e67e41 2344 if (!ifmgd->associated ||
b203ca39 2345 !ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid))
8d61ffa5 2346 return;
77fdaa12 2347
0c1ad2ca 2348 bssid = ifmgd->associated->bssid;
f0706e82
JB		 2349
2350 reason_code = le16_to_cpu(mgmt->u.deauth.reason_code);
2351
dfa1ad29
CO		 2352 sdata_info(sdata, "deauthenticated from %pM (Reason: %u=%s)\n",
2353 bssid, reason_code, ieee80211_get_reason_code_string(reason_code));
77fdaa12 2354
37ad3888
JB		 2355 ieee80211_set_disassoc(sdata, 0, 0, false, NULL);
2356
6ff57cf8 2357 cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len);
f0706e82
JB		 2358}
2359
2360
8d61ffa5
JB		 2361static void ieee80211_rx_mgmt_disassoc(struct ieee80211_sub_if_data *sdata,
2362 struct ieee80211_mgmt *mgmt, size_t len)
f0706e82 2363{
46900298 2364 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
f0706e82
JB		 2365 u16 reason_code;
2366
8d61ffa5 2367 sdata_assert_lock(sdata);
77fdaa12 2368
66e67e41 2369 if (len < 24 + 2)
8d61ffa5 2370 return;
77fdaa12 2371
66e67e41 2372 if (!ifmgd->associated ||
b203ca39 2373 !ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid))
8d61ffa5 2374 return;
f0706e82
JB		 2375
2376 reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code);
2377
bdcbd8e0
JB		 2378 sdata_info(sdata, "disassociated from %pM (Reason: %u)\n",
2379 mgmt->sa, reason_code);
f0706e82 2380
37ad3888
JB		 2381 ieee80211_set_disassoc(sdata, 0, 0, false, NULL);
2382
6ff57cf8 2383 cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len);
f0706e82
JB		 2384}
2385
c74d084f
CL		 2386static void ieee80211_get_rates(struct ieee80211_supported_band *sband,
2387 u8 *supp_rates, unsigned int supp_rates_len,
2388 u32 *rates, u32 *basic_rates,
2389 bool *have_higher_than_11mbit,
2103dec1
SW		 2390 int *min_rate, int *min_rate_index,
2391 int shift, u32 rate_flags)
c74d084f
CL		 2392{
2393 int i, j;
2394
2395 for (i = 0; i < supp_rates_len; i++) {
2103dec1 2396 int rate = supp_rates[i] & 0x7f;
c74d084f
CL		 2397 bool is_basic = !!(supp_rates[i] & 0x80);
2398
2103dec1 2399 if ((rate * 5 * (1 << shift)) > 110)
c74d084f
CL		 2400 *have_higher_than_11mbit = true;
2401
2402 /*
2403 * BSS_MEMBERSHIP_SELECTOR_HT_PHY is defined in 802.11n-2009
2404 * 7.3.2.2 as a magic value instead of a rate. Hence, skip it.
2405 *
2406 * Note: Even through the membership selector and the basic
2407 * rate flag share the same bit, they are not exactly
2408 * the same.
2409 */
2410 if (!!(supp_rates[i] & 0x80) &&
2411 (supp_rates[i] & 0x7f) == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
2412 continue;
2413
2414 for (j = 0; j < sband->n_bitrates; j++) {
2103dec1
SW		 2415 struct ieee80211_rate *br;
2416 int brate;
2417
2418 br = &sband->bitrates[j];
2419 if ((rate_flags & br->flags) != rate_flags)
2420 continue;
2421
2422 brate = DIV_ROUND_UP(br->bitrate, (1 << shift) * 5);
2423 if (brate == rate) {
c74d084f
CL		 2424 *rates |= BIT(j);
2425 if (is_basic)
2426 *basic_rates |= BIT(j);
2103dec1
SW		 2427 if ((rate * 5) < *min_rate) {
2428 *min_rate = rate * 5;
c74d084f
CL		 2429 *min_rate_index = j;
2430 }
2431 break;
2432 }
2433 }
2434 }
2435}
f0706e82 2436
66e67e41
JB		 2437static void ieee80211_destroy_assoc_data(struct ieee80211_sub_if_data *sdata,
2438 bool assoc)
2439{
2440 struct ieee80211_mgd_assoc_data *assoc_data = sdata->u.mgd.assoc_data;
2441
8d61ffa5 2442 sdata_assert_lock(sdata);
66e67e41 2443
66e67e41
JB		 2444 if (!assoc) {
2445 sta_info_destroy_addr(sdata, assoc_data->bss->bssid);
2446
2447 memset(sdata->u.mgd.bssid, 0, ETH_ALEN);
2448 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID);
028e8da0 2449 sdata->u.mgd.flags = 0;
34a3740d 2450 mutex_lock(&sdata->local->mtx);
55de908a 2451 ieee80211_vif_release_channel(sdata);
34a3740d 2452 mutex_unlock(&sdata->local->mtx);
66e67e41
JB		 2453 }
2454
2455 kfree(assoc_data);
2456 sdata->u.mgd.assoc_data = NULL;
2457}
2458
2459static bool ieee80211_assoc_success(struct ieee80211_sub_if_data *sdata,
2460 struct cfg80211_bss *cbss,
af6b6374 2461 struct ieee80211_mgmt *mgmt, size_t len)
f0706e82 2462{
46900298 2463 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
471b3efd 2464 struct ieee80211_local *local = sdata->local;
8318d78a 2465 struct ieee80211_supported_band *sband;
f0706e82 2466 struct sta_info *sta;
af6b6374 2467 u8 *pos;
af6b6374 2468 u16 capab_info, aid;
f0706e82 2469 struct ieee802_11_elems elems;
bda3933a 2470 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
35d865af
JB		 2471 const struct cfg80211_bss_ies *bss_ies = NULL;
2472 struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data;
ae5eb026 2473 u32 changed = 0;
c74d084f 2474 int err;
35d865af 2475 bool ret;
f0706e82 2476
af6b6374 2477 /* AssocResp and ReassocResp have identical structure */
f0706e82 2478
f0706e82 2479 aid = le16_to_cpu(mgmt->u.assoc_resp.aid);
af6b6374 2480 capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info);
f0706e82 2481
1dd84aa2 2482 if ((aid & (BIT(15) | BIT(14))) != (BIT(15) | BIT(14)))
bdcbd8e0
JB		 2483 sdata_info(sdata, "invalid AID value 0x%x; bits 15:14 not set\n",
2484 aid);
1dd84aa2
JB		 2485 aid &= ~(BIT(15) | BIT(14));
2486
05cb9108
JB		 2487 ifmgd->broken_ap = false;
2488
2489 if (aid == 0 || aid > IEEE80211_MAX_AID) {
bdcbd8e0
JB		 2490 sdata_info(sdata, "invalid AID value %d (out of range), turn off PS\n",
2491 aid);
05cb9108
JB		 2492 aid = 0;
2493 ifmgd->broken_ap = true;
2494 }
2495
af6b6374 2496 pos = mgmt->u.assoc_resp.variable;
b2e506bf 2497 ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), false, &elems);
af6b6374 2498
f0706e82 2499 if (!elems.supp_rates) {
bdcbd8e0 2500 sdata_info(sdata, "no SuppRates element in AssocResp\n");
af6b6374 2501 return false;
f0706e82
JB		 2502 }
2503
46900298 2504 ifmgd->aid = aid;
f0706e82 2505
35d865af
JB		 2506 /*
2507 * Some APs are erroneously not including some information in their
2508 * (re)association response frames. Try to recover by using the data
2509 * from the beacon or probe response. This seems to afflict mobile
2510 * 2G/3G/4G wifi routers, reported models include the "Onda PN51T",
2511 * "Vodafone PocketWiFi 2", "ZTE MF60" and a similar T-Mobile device.
2512 */
2513 if ((assoc_data->wmm && !elems.wmm_param) ||
2514 (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT) &&
2515 (!elems.ht_cap_elem || !elems.ht_operation)) ||
2516 (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) &&
2517 (!elems.vht_cap_elem || !elems.vht_operation))) {
2518 const struct cfg80211_bss_ies *ies;
2519 struct ieee802_11_elems bss_elems;
2520
2521 rcu_read_lock();
2522 ies = rcu_dereference(cbss->ies);
2523 if (ies)
2524 bss_ies = kmemdup(ies, sizeof(*ies) + ies->len,
2525 GFP_ATOMIC);
2526 rcu_read_unlock();
2527 if (!bss_ies)
2528 return false;
2529
2530 ieee802_11_parse_elems(bss_ies->data, bss_ies->len,
2531 false, &bss_elems);
2532 if (assoc_data->wmm &&
2533 !elems.wmm_param && bss_elems.wmm_param) {
2534 elems.wmm_param = bss_elems.wmm_param;
2535 sdata_info(sdata,
2536 "AP bug: WMM param missing from AssocResp\n");
2537 }
2538
2539 /*
2540 * Also check if we requested HT/VHT, otherwise the AP doesn't
2541 * have to include the IEs in the (re)association response.
2542 */
2543 if (!elems.ht_cap_elem && bss_elems.ht_cap_elem &&
2544 !(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) {
2545 elems.ht_cap_elem = bss_elems.ht_cap_elem;
2546 sdata_info(sdata,
2547 "AP bug: HT capability missing from AssocResp\n");
2548 }
2549 if (!elems.ht_operation && bss_elems.ht_operation &&
2550 !(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) {
2551 elems.ht_operation = bss_elems.ht_operation;
2552 sdata_info(sdata,
2553 "AP bug: HT operation missing from AssocResp\n");
2554 }
2555 if (!elems.vht_cap_elem && bss_elems.vht_cap_elem &&
2556 !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) {
2557 elems.vht_cap_elem = bss_elems.vht_cap_elem;
2558 sdata_info(sdata,
2559 "AP bug: VHT capa missing from AssocResp\n");
2560 }
2561 if (!elems.vht_operation && bss_elems.vht_operation &&
2562 !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) {
2563 elems.vht_operation = bss_elems.vht_operation;
2564 sdata_info(sdata,
2565 "AP bug: VHT operation missing from AssocResp\n");
2566 }
2567 }
2568
30eb1dc2
JB		 2569 /*
2570 * We previously checked these in the beacon/probe response, so
2571 * they should be present here. This is just a safety net.
2572 */
2573 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT) &&
2574 (!elems.wmm_param || !elems.ht_cap_elem || !elems.ht_operation)) {
2575 sdata_info(sdata,
35d865af
JB		 2576 "HT AP is missing WMM params or HT capability/operation\n");
2577 ret = false;
2578 goto out;
30eb1dc2
JB		 2579 }
2580
2581 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) &&
2582 (!elems.vht_cap_elem || !elems.vht_operation)) {
2583 sdata_info(sdata,
35d865af
JB		 2584 "VHT AP is missing VHT capability/operation\n");
2585 ret = false;
2586 goto out;
30eb1dc2
JB		 2587 }
2588
2a33bee2
GE		 2589 mutex_lock(&sdata->local->sta_mtx);
2590 /*
2591 * station info was already allocated and inserted before
2592 * the association and should be available to us
2593 */
7852e361 2594 sta = sta_info_get(sdata, cbss->bssid);
2a33bee2
GE		 2595 if (WARN_ON(!sta)) {
2596 mutex_unlock(&sdata->local->sta_mtx);
35d865af
JB		 2597 ret = false;
2598 goto out;
77fdaa12 2599 }
05e5e883 2600
55de908a 2601 sband = local->hw.wiphy->bands[ieee80211_get_sdata_band(sdata)];
f709fc69 2602
30eb1dc2 2603 /* Set up internal HT/VHT capabilities */
a8243b72 2604 if (elems.ht_cap_elem && !(ifmgd->flags & IEEE80211_STA_DISABLE_HT))
ef96a842 2605 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
e1a0c6b3 2606 elems.ht_cap_elem, sta);
64f68e5d 2607
818255ea
MP		 2608 if (elems.vht_cap_elem && !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
2609 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
4a34215e 2610 elems.vht_cap_elem, sta);
818255ea 2611
30eb1dc2
JB		 2612 /*
2613 * Some APs, e.g. Netgear WNDR3700, report invalid HT operation data
2614 * in their association response, so ignore that data for our own
2615 * configuration. If it changed since the last beacon, we'll get the
2616 * next beacon and update then.
2617 */
1128958d 2618
bee7f586
JB		 2619 /*
2620 * If an operating mode notification IE is present, override the
2621 * NSS calculation (that would be done in rate_control_rate_init())
2622 * and use the # of streams from that element.
2623 */
2624 if (elems.opmode_notif &&
2625 !(*elems.opmode_notif & IEEE80211_OPMODE_NOTIF_RX_NSS_TYPE_BF)) {
2626 u8 nss;
2627
2628 nss = *elems.opmode_notif & IEEE80211_OPMODE_NOTIF_RX_NSS_MASK;
2629 nss >>= IEEE80211_OPMODE_NOTIF_RX_NSS_SHIFT;
2630 nss += 1;
2631 sta->sta.rx_nss = nss;
2632 }
2633
4b7679a5 2634 rate_control_rate_init(sta);
f0706e82 2635
46900298 2636 if (ifmgd->flags & IEEE80211_STA_MFP_ENABLED)
c2c98fde 2637 set_sta_flag(sta, WLAN_STA_MFP);
5394af4d 2638
ddf4ac53 2639 if (elems.wmm_param)
c2c98fde 2640 set_sta_flag(sta, WLAN_STA_WME);
ddf4ac53 2641
3e4d40fa 2642 err = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
c8987876
JB		 2643 if (!err && !(ifmgd->flags & IEEE80211_STA_CONTROL_PORT))
2644 err = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
2645 if (err) {
bdcbd8e0
JB		 2646 sdata_info(sdata,
2647 "failed to move station %pM to desired state\n",
2648 sta->sta.addr);
c8987876
JB		 2649 WARN_ON(__sta_info_destroy(sta));
2650 mutex_unlock(&sdata->local->sta_mtx);
35d865af
JB		 2651 ret = false;
2652 goto out;
c8987876
JB		 2653 }
2654
7852e361 2655 mutex_unlock(&sdata->local->sta_mtx);
ddf4ac53 2656
f2176d72
JO		 2657 /*
2658 * Always handle WMM once after association regardless
2659 * of the first value the AP uses. Setting -1 here has
2660 * that effect because the AP values is an unsigned
2661 * 4-bit value.
2662 */
2663 ifmgd->wmm_last_param_set = -1;
2664
095d81ce 2665 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_WMM) && elems.wmm_param)
4ced3f74 2666 ieee80211_sta_wmm_params(local, sdata, elems.wmm_param,
60f8b39c 2667 elems.wmm_param_len);
aa837e1d 2668 else
3abead59
JB		 2669 ieee80211_set_wmm_default(sdata, false);
2670 changed |= BSS_CHANGED_QOS;
f0706e82 2671
60f8b39c
JB		 2672 /* set AID and assoc capability,
2673 * ieee80211_set_associated() will tell the driver */
2674 bss_conf->aid = aid;
2675 bss_conf->assoc_capability = capab_info;
0c1ad2ca 2676 ieee80211_set_associated(sdata, cbss, changed);
f0706e82 2677
d524215f
FF		 2678 /*
2679 * If we're using 4-addr mode, let the AP know that we're
2680 * doing so, so that it can create the STA VLAN on its side
2681 */
2682 if (ifmgd->use_4addr)
2683 ieee80211_send_4addr_nullfunc(local, sdata);
2684
15b7b062 2685 /*
b291ba11
JB		 2686 * Start timer to probe the connection to the AP now.
2687 * Also start the timer that will detect beacon loss.
15b7b062 2688 */
b291ba11 2689 ieee80211_sta_rx_notify(sdata, (struct ieee80211_hdr *)mgmt);
d3a910a8 2690 ieee80211_sta_reset_beacon_monitor(sdata);
15b7b062 2691
35d865af
JB		 2692 ret = true;
2693 out:
2694 kfree(bss_ies);
2695 return ret;
f0706e82
JB		 2696}
2697
8d61ffa5
JB		 2698static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata,
2699 struct ieee80211_mgmt *mgmt,
2700 size_t len)
66e67e41
JB		 2701{
2702 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2703 struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data;
2704 u16 capab_info, status_code, aid;
2705 struct ieee802_11_elems elems;
2706 u8 *pos;
2707 bool reassoc;
8d61ffa5 2708 struct cfg80211_bss *bss;
66e67e41 2709
8d61ffa5 2710 sdata_assert_lock(sdata);
66e67e41
JB		 2711
2712 if (!assoc_data)
8d61ffa5 2713 return;
b203ca39 2714 if (!ether_addr_equal(assoc_data->bss->bssid, mgmt->bssid))
8d61ffa5 2715 return;
66e67e41
JB		 2716
2717 /*
2718 * AssocResp and ReassocResp have identical structure, so process both
2719 * of them in this function.
2720 */
2721
2722 if (len < 24 + 6)
8d61ffa5 2723 return;
66e67e41
JB		 2724
2725 reassoc = ieee80211_is_reassoc_req(mgmt->frame_control);
2726 capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info);
2727 status_code = le16_to_cpu(mgmt->u.assoc_resp.status_code);
2728 aid = le16_to_cpu(mgmt->u.assoc_resp.aid);
2729
bdcbd8e0
JB		 2730 sdata_info(sdata,
2731 "RX %sssocResp from %pM (capab=0x%x status=%d aid=%d)\n",
2732 reassoc ? "Rea" : "A", mgmt->sa,
2733 capab_info, status_code, (u16)(aid & ~(BIT(15) | BIT(14))));
66e67e41
JB		 2734
2735 pos = mgmt->u.assoc_resp.variable;
b2e506bf 2736 ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), false, &elems);
66e67e41
JB		 2737
2738 if (status_code == WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY &&
79ba1d89
JB		 2739 elems.timeout_int &&
2740 elems.timeout_int->type == WLAN_TIMEOUT_ASSOC_COMEBACK) {
66e67e41 2741 u32 tu, ms;
79ba1d89 2742 tu = le32_to_cpu(elems.timeout_int->value);
66e67e41 2743 ms = tu * 1024 / 1000;
bdcbd8e0
JB		 2744 sdata_info(sdata,
2745 "%pM rejected association temporarily; comeback duration %u TU (%u ms)\n",
2746 mgmt->sa, tu, ms);
66e67e41 2747 assoc_data->timeout = jiffies + msecs_to_jiffies(ms);
89afe614 2748 assoc_data->timeout_started = true;
66e67e41 2749 if (ms > IEEE80211_ASSOC_TIMEOUT)
8d61ffa5
JB		 2750 run_again(sdata, assoc_data->timeout);
2751 return;
66e67e41
JB		 2752 }
2753
8d61ffa5 2754 bss = assoc_data->bss;
66e67e41
JB		 2755
2756 if (status_code != WLAN_STATUS_SUCCESS) {
bdcbd8e0
JB		 2757 sdata_info(sdata, "%pM denied association (code=%d)\n",
2758 mgmt->sa, status_code);
66e67e41
JB		 2759 ieee80211_destroy_assoc_data(sdata, false);
2760 } else {
8d61ffa5 2761 if (!ieee80211_assoc_success(sdata, bss, mgmt, len)) {
66e67e41 2762 /* oops -- internal error -- send timeout for now */
10a9109f 2763 ieee80211_destroy_assoc_data(sdata, false);
959867fa 2764 cfg80211_assoc_timeout(sdata->dev, bss);
8d61ffa5 2765 return;
66e67e41 2766 }
635d999f 2767 sdata_info(sdata, "associated\n");
79ebfb85
JB		 2768
2769 /*
2770 * destroy assoc_data afterwards, as otherwise an idle
2771 * recalc after assoc_data is NULL but before associated
2772 * is set can cause the interface to go idle
2773 */
2774 ieee80211_destroy_assoc_data(sdata, true);
66e67e41
JB		 2775 }
2776
6ff57cf8 2777 cfg80211_rx_assoc_resp(sdata->dev, bss, (u8 *)mgmt, len);
66e67e41 2778}
8e3c1b77 2779
98c8fccf 2780static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
8e3c1b77 2781 struct ieee80211_mgmt *mgmt, size_t len,
98c8fccf 2782 struct ieee80211_rx_status *rx_status,
d45c4172 2783 struct ieee802_11_elems *elems)
98c8fccf
JB		 2784{
2785 struct ieee80211_local *local = sdata->local;
c2b13452 2786 struct ieee80211_bss *bss;
98c8fccf 2787 struct ieee80211_channel *channel;
56007a02 2788
8d61ffa5 2789 sdata_assert_lock(sdata);
b4f286a1 2790
3afc2167
EG		 2791 channel = ieee80211_get_channel(local->hw.wiphy, rx_status->freq);
2792 if (!channel)
98c8fccf
JB		 2793 return;
2794
98c8fccf 2795 bss = ieee80211_bss_info_update(local, rx_status, mgmt, len, elems,
d45c4172 2796 channel);
817cee76 2797 if (bss) {
817cee76 2798 sdata->vif.bss_conf.beacon_rate = bss->beacon_rate;
d2722f8b 2799 ieee80211_rx_bss_put(local, bss);
817cee76 2800 }
f0706e82
JB		 2801}
2802
2803
f698d856 2804static void ieee80211_rx_mgmt_probe_resp(struct ieee80211_sub_if_data *sdata,
af6b6374 2805 struct sk_buff *skb)
f0706e82 2806{
af6b6374 2807 struct ieee80211_mgmt *mgmt = (void *)skb->data;
15b7b062 2808 struct ieee80211_if_managed *ifmgd;
af6b6374
JB		 2809 struct ieee80211_rx_status *rx_status = (void *) skb->cb;
2810 size_t baselen, len = skb->len;
ae6a44e3
EK		 2811 struct ieee802_11_elems elems;
2812
15b7b062
KV		 2813 ifmgd = &sdata->u.mgd;
2814
8d61ffa5 2815 sdata_assert_lock(sdata);
77fdaa12 2816
b203ca39 2817 if (!ether_addr_equal(mgmt->da, sdata->vif.addr))
8e7cdbb6
TW		 2818 return; /* ignore ProbeResp to foreign address */
2819
ae6a44e3
EK		 2820 baselen = (u8 *) mgmt->u.probe_resp.variable - (u8 *) mgmt;
2821 if (baselen > len)
2822 return;
2823
2824 ieee802_11_parse_elems(mgmt->u.probe_resp.variable, len - baselen,
b2e506bf 2825 false, &elems);
ae6a44e3 2826
d45c4172 2827 ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems);
9859b81e 2828
77fdaa12 2829 if (ifmgd->associated &&
b203ca39 2830 ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid))
4e5ff376 2831 ieee80211_reset_ap_probe(sdata);
66e67e41
JB		 2832
2833 if (ifmgd->auth_data && !ifmgd->auth_data->bss->proberesp_ies &&
b203ca39 2834 ether_addr_equal(mgmt->bssid, ifmgd->auth_data->bss->bssid)) {
66e67e41 2835 /* got probe response, continue with auth */
bdcbd8e0 2836 sdata_info(sdata, "direct probe responded\n");
66e67e41
JB		 2837 ifmgd->auth_data->tries = 0;
2838 ifmgd->auth_data->timeout = jiffies;
89afe614 2839 ifmgd->auth_data->timeout_started = true;
8d61ffa5 2840 run_again(sdata, ifmgd->auth_data->timeout);
66e67e41 2841 }
f0706e82
JB		 2842}
2843
d91f36db
JB		 2844/*
2845 * This is the canonical list of information elements we care about,
2846 * the filter code also gives us all changes to the Microsoft OUI
2847 * (00:50:F2) vendor IE which is used for WMM which we need to track.
2848 *
2849 * We implement beacon filtering in software since that means we can
2850 * avoid processing the frame here and in cfg80211, and userspace
2851 * will not be able to tell whether the hardware supports it or not.
2852 *
2853 * XXX: This list needs to be dynamic -- userspace needs to be able to
2854 * add items it requires. It also needs to be able to tell us to
2855 * look out for other vendor IEs.
2856 */
2857static const u64 care_about_ies =
1d4df3a5
JB		 2858 (1ULL << WLAN_EID_COUNTRY) |
2859 (1ULL << WLAN_EID_ERP_INFO) |
2860 (1ULL << WLAN_EID_CHANNEL_SWITCH) |
2861 (1ULL << WLAN_EID_PWR_CONSTRAINT) |
2862 (1ULL << WLAN_EID_HT_CAPABILITY) |
074d46d1 2863 (1ULL << WLAN_EID_HT_OPERATION);
d91f36db 2864
8d61ffa5
JB		 2865static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
2866 struct ieee80211_mgmt *mgmt, size_t len,
2867 struct ieee80211_rx_status *rx_status)
f0706e82 2868{
d91f36db 2869 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
17e4ec14 2870 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
f0706e82
JB		 2871 size_t baselen;
2872 struct ieee802_11_elems elems;
f698d856 2873 struct ieee80211_local *local = sdata->local;
55de908a
JB		 2874 struct ieee80211_chanctx_conf *chanctx_conf;
2875 struct ieee80211_channel *chan;
bee7f586 2876 struct sta_info *sta;
471b3efd 2877 u32 changed = 0;
f87ad637 2878 bool erp_valid;
7a5158ef 2879 u8 erp_value = 0;
d91f36db 2880 u32 ncrc;
77fdaa12 2881 u8 *bssid;
8d61ffa5 2882 u8 deauth_buf[IEEE80211_DEAUTH_FRAME_LEN];
77fdaa12 2883
8d61ffa5 2884 sdata_assert_lock(sdata);
f0706e82 2885
ae6a44e3
EK		 2886 /* Process beacon from the current BSS */
2887 baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt;
2888 if (baselen > len)
8d61ffa5 2889 return;
ae6a44e3 2890
55de908a
JB		 2891 rcu_read_lock();
2892 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
2893 if (!chanctx_conf) {
2894 rcu_read_unlock();
8d61ffa5 2895 return;
55de908a
JB		 2896 }
2897
4bf88530 2898 if (rx_status->freq != chanctx_conf->def.chan->center_freq) {
55de908a 2899 rcu_read_unlock();
8d61ffa5 2900 return;
55de908a 2901 }
4bf88530 2902 chan = chanctx_conf->def.chan;
55de908a 2903 rcu_read_unlock();
f0706e82 2904
c65dd147 2905 if (ifmgd->assoc_data && ifmgd->assoc_data->need_beacon &&
b203ca39 2906 ether_addr_equal(mgmt->bssid, ifmgd->assoc_data->bss->bssid)) {
66e67e41 2907 ieee802_11_parse_elems(mgmt->u.beacon.variable,
b2e506bf 2908 len - baselen, false, &elems);
77fdaa12 2909
d45c4172 2910 ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems);
482a9c74
AB		 2911 if (elems.tim && !elems.parse_error) {
2912 const struct ieee80211_tim_ie *tim_ie = elems.tim;
2913 ifmgd->dtim_period = tim_ie->dtim_period;
2914 }
989c6505 2915 ifmgd->have_beacon = true;
c65dd147 2916 ifmgd->assoc_data->need_beacon = false;
ef429dad
JB		 2917 if (local->hw.flags & IEEE80211_HW_TIMING_BEACON_ONLY) {
2918 sdata->vif.bss_conf.sync_tsf =
2919 le64_to_cpu(mgmt->u.beacon.timestamp);
2920 sdata->vif.bss_conf.sync_device_ts =
2921 rx_status->device_timestamp;
2922 if (elems.tim)
2923 sdata->vif.bss_conf.sync_dtim_count =
2924 elems.tim->dtim_count;
2925 else
2926 sdata->vif.bss_conf.sync_dtim_count = 0;
2927 }
66e67e41
JB		 2928 /* continue assoc process */
2929 ifmgd->assoc_data->timeout = jiffies;
89afe614 2930 ifmgd->assoc_data->timeout_started = true;
8d61ffa5
JB		 2931 run_again(sdata, ifmgd->assoc_data->timeout);
2932 return;
66e67e41 2933 }
77fdaa12 2934
66e67e41 2935 if (!ifmgd->associated ||
b203ca39 2936 !ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid))
8d61ffa5 2937 return;
66e67e41 2938 bssid = ifmgd->associated->bssid;
f0706e82 2939
17e4ec14
JM		 2940 /* Track average RSSI from the Beacon frames of the current AP */
2941 ifmgd->last_beacon_signal = rx_status->signal;
2942 if (ifmgd->flags & IEEE80211_STA_RESET_SIGNAL_AVE) {
2943 ifmgd->flags &= ~IEEE80211_STA_RESET_SIGNAL_AVE;
3ba06c6f 2944 ifmgd->ave_beacon_signal = rx_status->signal * 16;
17e4ec14 2945 ifmgd->last_cqm_event_signal = 0;
391a200a 2946 ifmgd->count_beacon_signal = 1;
615f7b9b 2947 ifmgd->last_ave_beacon_signal = 0;
17e4ec14
JM		 2948 } else {
2949 ifmgd->ave_beacon_signal =
2950 (IEEE80211_SIGNAL_AVE_WEIGHT * rx_status->signal * 16 +
2951 (16 - IEEE80211_SIGNAL_AVE_WEIGHT) *
2952 ifmgd->ave_beacon_signal) / 16;
391a200a 2953 ifmgd->count_beacon_signal++;
17e4ec14 2954 }
615f7b9b
MV		 2955
2956 if (ifmgd->rssi_min_thold != ifmgd->rssi_max_thold &&
2957 ifmgd->count_beacon_signal >= IEEE80211_SIGNAL_AVE_MIN_COUNT) {
2958 int sig = ifmgd->ave_beacon_signal;
2959 int last_sig = ifmgd->last_ave_beacon_signal;
2960
2961 /*
2962 * if signal crosses either of the boundaries, invoke callback
2963 * with appropriate parameters
2964 */
2965 if (sig > ifmgd->rssi_max_thold &&
2966 (last_sig <= ifmgd->rssi_min_thold || last_sig == 0)) {
2967 ifmgd->last_ave_beacon_signal = sig;
887da917 2968 drv_rssi_callback(local, sdata, RSSI_EVENT_HIGH);
615f7b9b
MV		 2969 } else if (sig < ifmgd->rssi_min_thold &&
2970 (last_sig >= ifmgd->rssi_max_thold ||
2971 last_sig == 0)) {
2972 ifmgd->last_ave_beacon_signal = sig;
887da917 2973 drv_rssi_callback(local, sdata, RSSI_EVENT_LOW);
615f7b9b
MV		 2974 }
2975 }
2976
17e4ec14 2977 if (bss_conf->cqm_rssi_thold &&
391a200a 2978 ifmgd->count_beacon_signal >= IEEE80211_SIGNAL_AVE_MIN_COUNT &&
ea086359 2979 !(sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)) {
17e4ec14
JM		 2980 int sig = ifmgd->ave_beacon_signal / 16;
2981 int last_event = ifmgd->last_cqm_event_signal;
2982 int thold = bss_conf->cqm_rssi_thold;
2983 int hyst = bss_conf->cqm_rssi_hyst;
2984 if (sig < thold &&
2985 (last_event == 0 || sig < last_event - hyst)) {
2986 ifmgd->last_cqm_event_signal = sig;
2987 ieee80211_cqm_rssi_notify(
2988 &sdata->vif,
2989 NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW,
2990 GFP_KERNEL);
2991 } else if (sig > thold &&
2992 (last_event == 0 || sig > last_event + hyst)) {
2993 ifmgd->last_cqm_event_signal = sig;
2994 ieee80211_cqm_rssi_notify(
2995 &sdata->vif,
2996 NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH,
2997 GFP_KERNEL);
2998 }
2999 }
3000
392b9ffb 3001 if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL) {
bdcbd8e0 3002 mlme_dbg_ratelimited(sdata,
112c31f0 3003 "cancelling AP probe due to a received beacon\n");
392b9ffb 3004 ieee80211_reset_ap_probe(sdata);
92778180
JM		 3005 }
3006
b291ba11
JB		 3007 /*
3008 * Push the beacon loss detection into the future since
3009 * we are processing a beacon from the AP just now.
3010 */
d3a910a8 3011 ieee80211_sta_reset_beacon_monitor(sdata);
b291ba11 3012
d91f36db
JB		 3013 ncrc = crc32_be(0, (void *)&mgmt->u.beacon.beacon_int, 4);
3014 ncrc = ieee802_11_parse_elems_crc(mgmt->u.beacon.variable,
b2e506bf 3015 len - baselen, false, &elems,
d91f36db
JB		 3016 care_about_ies, ncrc);
3017
25c9c875 3018 if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) {
f87ad637
RR		 3019 bool directed_tim = ieee80211_check_tim(elems.tim,
3020 elems.tim_len,
3021 ifmgd->aid);
1fb3606b 3022 if (directed_tim) {
572e0012 3023 if (local->hw.conf.dynamic_ps_timeout > 0) {
70b12f26
RW		 3024 if (local->hw.conf.flags & IEEE80211_CONF_PS) {
3025 local->hw.conf.flags &= ~IEEE80211_CONF_PS;
3026 ieee80211_hw_config(local,
3027 IEEE80211_CONF_CHANGE_PS);
3028 }
572e0012 3029 ieee80211_send_nullfunc(local, sdata, 0);
6f0756a3 3030 } else if (!local->pspolling && sdata->u.mgd.powersave) {
572e0012
KV		 3031 local->pspolling = true;
3032
3033 /*
3034 * Here is assumed that the driver will be
3035 * able to send ps-poll frame and receive a
3036 * response even though power save mode is
3037 * enabled, but some drivers might require
3038 * to disable power save here. This needs
3039 * to be investigated.
3040 */
3041 ieee80211_send_pspoll(local, sdata);
3042 }
a97b77b9
VN		 3043 }
3044 }
7a5158ef 3045
488dd7b5 3046 if (sdata->vif.p2p) {
67baf663 3047 struct ieee80211_p2p_noa_attr noa = {};
488dd7b5
JB		 3048 int ret;
3049
3050 ret = cfg80211_get_p2p_attr(mgmt->u.beacon.variable,
3051 len - baselen,
3052 IEEE80211_P2P_ATTR_ABSENCE_NOTICE,
934457ee 3053 (u8 *) &noa, sizeof(noa));
67baf663
JD		 3054 if (ret >= 2) {
3055 if (sdata->u.mgd.p2p_noa_index != noa.index) {
3056 /* valid noa_attr and index changed */
3057 sdata->u.mgd.p2p_noa_index = noa.index;
3058 memcpy(&bss_conf->p2p_noa_attr, &noa, sizeof(noa));
3059 changed |= BSS_CHANGED_P2P_PS;
3060 /*
3061 * make sure we update all information, the CRC
3062 * mechanism doesn't look at P2P attributes.
3063 */
3064 ifmgd->beacon_crc_valid = false;
3065 }
3066 } else if (sdata->u.mgd.p2p_noa_index != -1) {
3067 /* noa_attr not found and we had valid noa_attr before */
3068 sdata->u.mgd.p2p_noa_index = -1;
3069 memset(&bss_conf->p2p_noa_attr, 0, sizeof(bss_conf->p2p_noa_attr));
488dd7b5 3070 changed |= BSS_CHANGED_P2P_PS;
488dd7b5
JB		 3071 ifmgd->beacon_crc_valid = false;
3072 }
3073 }
3074
d8ec4433 3075 if (ncrc == ifmgd->beacon_crc && ifmgd->beacon_crc_valid)
8d61ffa5 3076 return;
30196673 3077 ifmgd->beacon_crc = ncrc;
d8ec4433 3078 ifmgd->beacon_crc_valid = true;
30196673 3079
d45c4172 3080 ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems);
7d25745d 3081
d70b7616
JB		 3082 ieee80211_sta_process_chanswitch(sdata, rx_status->mactime,
3083 &elems, true);
3084
095d81ce
JB		 3085 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_WMM) &&
3086 ieee80211_sta_wmm_params(local, sdata, elems.wmm_param,
7d25745d
JB		 3087 elems.wmm_param_len))
3088 changed |= BSS_CHANGED_QOS;
3089
c65dd147
EG		 3090 /*
3091 * If we haven't had a beacon before, tell the driver about the
ef429dad 3092 * DTIM period (and beacon timing if desired) now.
c65dd147 3093 */
989c6505 3094 if (!ifmgd->have_beacon) {
c65dd147
EG		 3095 /* a few bogus AP send dtim_period = 0 or no TIM IE */
3096 if (elems.tim)
3097 bss_conf->dtim_period = elems.tim->dtim_period ?: 1;
3098 else
3099 bss_conf->dtim_period = 1;
ef429dad
JB		 3100
3101 if (local->hw.flags & IEEE80211_HW_TIMING_BEACON_ONLY) {
3102 sdata->vif.bss_conf.sync_tsf =
3103 le64_to_cpu(mgmt->u.beacon.timestamp);
3104 sdata->vif.bss_conf.sync_device_ts =
3105 rx_status->device_timestamp;
3106 if (elems.tim)
3107 sdata->vif.bss_conf.sync_dtim_count =
3108 elems.tim->dtim_count;
3109 else
3110 sdata->vif.bss_conf.sync_dtim_count = 0;
3111 }
3112
989c6505
AB		 3113 changed |= BSS_CHANGED_BEACON_INFO;
3114 ifmgd->have_beacon = true;
482a9c74
AB		 3115
3116 mutex_lock(&local->iflist_mtx);
3117 ieee80211_recalc_ps(local, -1);
3118 mutex_unlock(&local->iflist_mtx);
3119
ce857888 3120 ieee80211_recalc_ps_vif(sdata);
c65dd147
EG		 3121 }
3122
1946bed9 3123 if (elems.erp_info) {
7a5158ef
JB		 3124 erp_valid = true;
3125 erp_value = elems.erp_info[0];
3126 } else {
3127 erp_valid = false;
50c4afb9 3128 }
7a5158ef
JB		 3129 changed |= ieee80211_handle_bss_capability(sdata,
3130 le16_to_cpu(mgmt->u.beacon.capab_info),
3131 erp_valid, erp_value);
f0706e82 3132
1128958d 3133 mutex_lock(&local->sta_mtx);
bee7f586
JB		 3134 sta = sta_info_get(sdata, bssid);
3135
30eb1dc2
JB		 3136 if (ieee80211_config_bw(sdata, sta, elems.ht_operation,
3137 elems.vht_operation, bssid, &changed)) {
3138 mutex_unlock(&local->sta_mtx);
3139 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
3140 WLAN_REASON_DEAUTH_LEAVING,
3141 true, deauth_buf);
6ff57cf8
JB		 3142 cfg80211_tx_mlme_mgmt(sdata->dev, deauth_buf,
3143 sizeof(deauth_buf));
8d61ffa5 3144 return;
30eb1dc2 3145 }
bee7f586
JB		 3146
3147 if (sta && elems.opmode_notif)
3148 ieee80211_vht_handle_opmode(sdata, sta, *elems.opmode_notif,
3149 rx_status->band, true);
1128958d 3150 mutex_unlock(&local->sta_mtx);
d3c990fb 3151
04b7b2ff
JB		 3152 if (elems.country_elem && elems.pwr_constr_elem &&
3153 mgmt->u.probe_resp.capab_info &
3154 cpu_to_le16(WLAN_CAPABILITY_SPECTRUM_MGMT))
1ea6f9c0
JB		 3155 changed |= ieee80211_handle_pwr_constr(sdata, chan,
3156 elems.country_elem,
3157 elems.country_elem_len,
3158 elems.pwr_constr_elem);
3f2355cb 3159
471b3efd 3160 ieee80211_bss_info_change_notify(sdata, changed);
f0706e82
JB		 3161}
3162
1fa57d01
JB		 3163void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
3164 struct sk_buff *skb)
f0706e82
JB		 3165{
3166 struct ieee80211_rx_status *rx_status;
f0706e82
JB		 3167 struct ieee80211_mgmt *mgmt;
3168 u16 fc;
1b3a2e49
JB		 3169 struct ieee802_11_elems elems;
3170 int ies_len;
f0706e82 3171
f0706e82
JB		 3172 rx_status = (struct ieee80211_rx_status *) skb->cb;
3173 mgmt = (struct ieee80211_mgmt *) skb->data;
3174 fc = le16_to_cpu(mgmt->frame_control);
3175
8d61ffa5 3176 sdata_lock(sdata);
77fdaa12 3177
66e67e41
JB		 3178 switch (fc & IEEE80211_FCTL_STYPE) {
3179 case IEEE80211_STYPE_BEACON:
8d61ffa5 3180 ieee80211_rx_mgmt_beacon(sdata, mgmt, skb->len, rx_status);
66e67e41
JB		 3181 break;
3182 case IEEE80211_STYPE_PROBE_RESP:
3183 ieee80211_rx_mgmt_probe_resp(sdata, skb);
3184 break;
3185 case IEEE80211_STYPE_AUTH:
8d61ffa5 3186 ieee80211_rx_mgmt_auth(sdata, mgmt, skb->len);
66e67e41
JB		 3187 break;
3188 case IEEE80211_STYPE_DEAUTH:
8d61ffa5 3189 ieee80211_rx_mgmt_deauth(sdata, mgmt, skb->len);
66e67e41
JB		 3190 break;
3191 case IEEE80211_STYPE_DISASSOC:
8d61ffa5 3192 ieee80211_rx_mgmt_disassoc(sdata, mgmt, skb->len);
66e67e41
JB		 3193 break;
3194 case IEEE80211_STYPE_ASSOC_RESP:
3195 case IEEE80211_STYPE_REASSOC_RESP:
8d61ffa5 3196 ieee80211_rx_mgmt_assoc_resp(sdata, mgmt, skb->len);
66e67e41
JB		 3197 break;
3198 case IEEE80211_STYPE_ACTION:
37799e52 3199 if (mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT) {
1b3a2e49
JB		 3200 ies_len = skb->len -
3201 offsetof(struct ieee80211_mgmt,
3202 u.action.u.chan_switch.variable);
37799e52
JB		 3203
3204 if (ies_len < 0)
3205 break;
3206
3207 ieee802_11_parse_elems(
3208 mgmt->u.action.u.chan_switch.variable,
b2e506bf 3209 ies_len, true, &elems);
37799e52
JB		 3210
3211 if (elems.parse_error)
3212 break;
3213
1b3a2e49
JB		 3214 ieee80211_sta_process_chanswitch(sdata,
3215 rx_status->mactime,
04a161f4 3216 &elems, false);
1b3a2e49
JB		 3217 } else if (mgmt->u.action.category == WLAN_CATEGORY_PUBLIC) {
3218 ies_len = skb->len -
3219 offsetof(struct ieee80211_mgmt,
3220 u.action.u.ext_chan_switch.variable);
3221
3222 if (ies_len < 0)
3223 break;
3224
3225 ieee802_11_parse_elems(
3226 mgmt->u.action.u.ext_chan_switch.variable,
b2e506bf 3227 ies_len, true, &elems);
1b3a2e49
JB		 3228
3229 if (elems.parse_error)
3230 break;
3231
3232 /* for the handling code pretend this was also an IE */
3233 elems.ext_chansw_ie =
3234 &mgmt->u.action.u.ext_chan_switch.data;
3235
66e67e41 3236 ieee80211_sta_process_chanswitch(sdata,
37799e52 3237 rx_status->mactime,
04a161f4 3238 &elems, false);
77fdaa12 3239 }
37799e52 3240 break;
77fdaa12 3241 }
8d61ffa5 3242 sdata_unlock(sdata);
f0706e82
JB		 3243}
3244
9c6bd790 3245static void ieee80211_sta_timer(unsigned long data)
f0706e82 3246{
60f8b39c
JB		 3247 struct ieee80211_sub_if_data *sdata =
3248 (struct ieee80211_sub_if_data *) data;
5bb644a0 3249
9b7d72c1 3250 ieee80211_queue_work(&sdata->local->hw, &sdata->work);
f0706e82
JB		 3251}
3252
04ac3c0e 3253static void ieee80211_sta_connection_lost(struct ieee80211_sub_if_data *sdata,
6b684db1 3254 u8 *bssid, u8 reason, bool tx)
04ac3c0e 3255{
6ae16775 3256 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
04ac3c0e 3257
37ad3888 3258 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, reason,
6b684db1 3259 tx, frame_buf);
37ad3888 3260
6ff57cf8
JB		 3261 cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf,
3262 IEEE80211_DEAUTH_FRAME_LEN);
04ac3c0e
FF		 3263}
3264
66e67e41
JB		 3265static int ieee80211_probe_auth(struct ieee80211_sub_if_data *sdata)
3266{
3267 struct ieee80211_local *local = sdata->local;
3268 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3269 struct ieee80211_mgd_auth_data *auth_data = ifmgd->auth_data;
1672c0e3 3270 u32 tx_flags = 0;
66e67e41 3271
8d61ffa5 3272 sdata_assert_lock(sdata);
66e67e41
JB		 3273
3274 if (WARN_ON_ONCE(!auth_data))
3275 return -EINVAL;
3276
66e67e41
JB		 3277 auth_data->tries++;
3278
3279 if (auth_data->tries > IEEE80211_AUTH_MAX_TRIES) {
bdcbd8e0
JB		 3280 sdata_info(sdata, "authentication with %pM timed out\n",
3281 auth_data->bss->bssid);
66e67e41
JB		 3282
3283 /*
3284 * Most likely AP is not in the range so remove the
3285 * bss struct for that AP.
3286 */
3287 cfg80211_unlink_bss(local->hw.wiphy, auth_data->bss);
3288
3289 return -ETIMEDOUT;
3290 }
3291
a1845fc7
JB		 3292 drv_mgd_prepare_tx(local, sdata);
3293
66e67e41 3294 if (auth_data->bss->proberesp_ies) {
6b8ece3a
JM		 3295 u16 trans = 1;
3296 u16 status = 0;
3297
bdcbd8e0
JB		 3298 sdata_info(sdata, "send auth to %pM (try %d/%d)\n",
3299 auth_data->bss->bssid, auth_data->tries,
3300 IEEE80211_AUTH_MAX_TRIES);
66e67e41
JB		 3301
3302 auth_data->expected_transaction = 2;
6b8ece3a
JM		 3303
3304 if (auth_data->algorithm == WLAN_AUTH_SAE) {
3305 trans = auth_data->sae_trans;
3306 status = auth_data->sae_status;
3307 auth_data->expected_transaction = trans;
3308 }
3309
6211dd12
SG		 3310 if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)
3311 tx_flags = IEEE80211_TX_CTL_REQ_TX_STATUS |
3312 IEEE80211_TX_INTFL_MLME_CONN_TX;
3313
6b8ece3a
JM		 3314 ieee80211_send_auth(sdata, trans, auth_data->algorithm, status,
3315 auth_data->data, auth_data->data_len,
66e67e41 3316 auth_data->bss->bssid,
1672c0e3
JB		 3317 auth_data->bss->bssid, NULL, 0, 0,
3318 tx_flags);
66e67e41
JB		 3319 } else {
3320 const u8 *ssidie;
3321
bdcbd8e0
JB		 3322 sdata_info(sdata, "direct probe to %pM (try %d/%i)\n",
3323 auth_data->bss->bssid, auth_data->tries,
3324 IEEE80211_AUTH_MAX_TRIES);
66e67e41 3325
9caf0364 3326 rcu_read_lock();
66e67e41 3327 ssidie = ieee80211_bss_get_ie(auth_data->bss, WLAN_EID_SSID);
9caf0364
JB		 3328 if (!ssidie) {
3329 rcu_read_unlock();
66e67e41 3330 return -EINVAL;
9caf0364 3331 }
66e67e41
JB		 3332 /*
3333 * Direct probe is sent to broadcast address as some APs
3334 * will not answer to direct packet in unassociated state.
3335 */
3336 ieee80211_send_probe_req(sdata, NULL, ssidie + 2, ssidie[1],
6211dd12 3337 NULL, 0, (u32) -1, true, 0,
55de908a 3338 auth_data->bss->channel, false);
9caf0364 3339 rcu_read_unlock();
66e67e41
JB		 3340 }
3341
6211dd12 3342 if (tx_flags == 0) {
1672c0e3 3343 auth_data->timeout = jiffies + IEEE80211_AUTH_TIMEOUT;
cb236d2d 3344 auth_data->timeout_started = true;
8d61ffa5 3345 run_again(sdata, auth_data->timeout);
89afe614 3346 } else {
cb236d2d
JB		 3347 auth_data->timeout =
3348 round_jiffies_up(jiffies + IEEE80211_AUTH_TIMEOUT_LONG);
3349 auth_data->timeout_started = true;
3350 run_again(sdata, auth_data->timeout);
1672c0e3 3351 }
66e67e41
JB		 3352
3353 return 0;
3354}
3355
3356static int ieee80211_do_assoc(struct ieee80211_sub_if_data *sdata)
3357{
3358 struct ieee80211_mgd_assoc_data *assoc_data = sdata->u.mgd.assoc_data;
3359 struct ieee80211_local *local = sdata->local;
3360
8d61ffa5 3361 sdata_assert_lock(sdata);
66e67e41 3362
66e67e41
JB		 3363 assoc_data->tries++;
3364 if (assoc_data->tries > IEEE80211_ASSOC_MAX_TRIES) {
bdcbd8e0
JB		 3365 sdata_info(sdata, "association with %pM timed out\n",
3366 assoc_data->bss->bssid);
66e67e41
JB		 3367
3368 /*
3369 * Most likely AP is not in the range so remove the
3370 * bss struct for that AP.
3371 */
3372 cfg80211_unlink_bss(local->hw.wiphy, assoc_data->bss);
3373
3374 return -ETIMEDOUT;
3375 }
3376
bdcbd8e0
JB		 3377 sdata_info(sdata, "associate with %pM (try %d/%d)\n",
3378 assoc_data->bss->bssid, assoc_data->tries,
3379 IEEE80211_ASSOC_MAX_TRIES);
66e67e41
JB		 3380 ieee80211_send_assoc(sdata);
3381
1672c0e3
JB		 3382 if (!(local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)) {
3383 assoc_data->timeout = jiffies + IEEE80211_ASSOC_TIMEOUT;
89afe614 3384 assoc_data->timeout_started = true;
8d61ffa5 3385 run_again(sdata, assoc_data->timeout);
89afe614 3386 } else {
cb236d2d
JB		 3387 assoc_data->timeout =
3388 round_jiffies_up(jiffies +
3389 IEEE80211_ASSOC_TIMEOUT_LONG);
3390 assoc_data->timeout_started = true;
3391 run_again(sdata, assoc_data->timeout);
1672c0e3 3392 }
66e67e41
JB		 3393
3394 return 0;
3395}
3396
1672c0e3
JB		 3397void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata,
3398 __le16 fc, bool acked)
3399{
3400 struct ieee80211_local *local = sdata->local;
3401
3402 sdata->u.mgd.status_fc = fc;
3403 sdata->u.mgd.status_acked = acked;
3404 sdata->u.mgd.status_received = true;
3405
3406 ieee80211_queue_work(&local->hw, &sdata->work);
3407}
3408
1fa57d01 3409void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata)
9c6bd790 3410{
9c6bd790 3411 struct ieee80211_local *local = sdata->local;
1fa57d01 3412 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
9c6bd790 3413
8d61ffa5 3414 sdata_lock(sdata);
77fdaa12 3415
1672c0e3
JB		 3416 if (ifmgd->status_received) {
3417 __le16 fc = ifmgd->status_fc;
3418 bool status_acked = ifmgd->status_acked;
3419
3420 ifmgd->status_received = false;
3421 if (ifmgd->auth_data &&
3422 (ieee80211_is_probe_req(fc) || ieee80211_is_auth(fc))) {
3423 if (status_acked) {
3424 ifmgd->auth_data->timeout =
3425 jiffies + IEEE80211_AUTH_TIMEOUT_SHORT;
8d61ffa5 3426 run_again(sdata, ifmgd->auth_data->timeout);
1672c0e3
JB		 3427 } else {
3428 ifmgd->auth_data->timeout = jiffies - 1;
3429 }
89afe614 3430 ifmgd->auth_data->timeout_started = true;
1672c0e3
JB		 3431 } else if (ifmgd->assoc_data &&
3432 (ieee80211_is_assoc_req(fc) ||
3433 ieee80211_is_reassoc_req(fc))) {
3434 if (status_acked) {
3435 ifmgd->assoc_data->timeout =
3436 jiffies + IEEE80211_ASSOC_TIMEOUT_SHORT;
8d61ffa5 3437 run_again(sdata, ifmgd->assoc_data->timeout);
1672c0e3
JB		 3438 } else {
3439 ifmgd->assoc_data->timeout = jiffies - 1;
3440 }
89afe614 3441 ifmgd->assoc_data->timeout_started = true;
1672c0e3
JB		 3442 }
3443 }
3444
89afe614 3445 if (ifmgd->auth_data && ifmgd->auth_data->timeout_started &&
66e67e41
JB		 3446 time_after(jiffies, ifmgd->auth_data->timeout)) {
3447 if (ifmgd->auth_data->done) {
3448 /*
3449 * ok ... we waited for assoc but userspace didn't,
3450 * so let's just kill the auth data
3451 */
3452 ieee80211_destroy_auth_data(sdata, false);
3453 } else if (ieee80211_probe_auth(sdata)) {
3454 u8 bssid[ETH_ALEN];
3455
3456 memcpy(bssid, ifmgd->auth_data->bss->bssid, ETH_ALEN);
3457
3458 ieee80211_destroy_auth_data(sdata, false);
3459
6ff57cf8 3460 cfg80211_auth_timeout(sdata->dev, bssid);
66e67e41 3461 }
89afe614 3462 } else if (ifmgd->auth_data && ifmgd->auth_data->timeout_started)
8d61ffa5 3463 run_again(sdata, ifmgd->auth_data->timeout);
66e67e41 3464
89afe614 3465 if (ifmgd->assoc_data && ifmgd->assoc_data->timeout_started &&
66e67e41 3466 time_after(jiffies, ifmgd->assoc_data->timeout)) {
989c6505 3467 if ((ifmgd->assoc_data->need_beacon && !ifmgd->have_beacon) ||
66e67e41 3468 ieee80211_do_assoc(sdata)) {
959867fa 3469 struct cfg80211_bss *bss = ifmgd->assoc_data->bss;
66e67e41
JB		 3470
3471 ieee80211_destroy_assoc_data(sdata, false);
959867fa 3472 cfg80211_assoc_timeout(sdata->dev, bss);
66e67e41 3473 }
89afe614 3474 } else if (ifmgd->assoc_data && ifmgd->assoc_data->timeout_started)
8d61ffa5 3475 run_again(sdata, ifmgd->assoc_data->timeout);
66e67e41 3476
392b9ffb 3477 if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL &&
b291ba11 3478 ifmgd->associated) {
a43abf29 3479 u8 bssid[ETH_ALEN];
72a8a3ed 3480 int max_tries;
a43abf29 3481
0c1ad2ca 3482 memcpy(bssid, ifmgd->associated->bssid, ETH_ALEN);
4e5ff376 3483
72a8a3ed 3484 if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)
180205bd 3485 max_tries = max_nullfunc_tries;
72a8a3ed 3486 else
180205bd 3487 max_tries = max_probe_tries;
72a8a3ed 3488
4e5ff376
FF		 3489 /* ACK received for nullfunc probing frame */
3490 if (!ifmgd->probe_send_count)
3491 ieee80211_reset_ap_probe(sdata);
04ac3c0e
FF		 3492 else if (ifmgd->nullfunc_failed) {
3493 if (ifmgd->probe_send_count < max_tries) {
bdcbd8e0
JB		 3494 mlme_dbg(sdata,
3495 "No ack for nullfunc frame to AP %pM, try %d/%i\n",
3496 bssid, ifmgd->probe_send_count,
3497 max_tries);
04ac3c0e
FF		 3498 ieee80211_mgd_probe_ap_send(sdata);
3499 } else {
bdcbd8e0
JB		 3500 mlme_dbg(sdata,
3501 "No ack for nullfunc frame to AP %pM, disconnecting.\n",
3502 bssid);
95acac61 3503 ieee80211_sta_connection_lost(sdata, bssid,
6b684db1
JB		 3504 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY,
3505 false);
04ac3c0e
FF		 3506 }
3507 } else if (time_is_after_jiffies(ifmgd->probe_timeout))
8d61ffa5 3508 run_again(sdata, ifmgd->probe_timeout);
04ac3c0e 3509 else if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) {
bdcbd8e0
JB		 3510 mlme_dbg(sdata,
3511 "Failed to send nullfunc to AP %pM after %dms, disconnecting\n",
3512 bssid, probe_wait_ms);
95acac61 3513 ieee80211_sta_connection_lost(sdata, bssid,
6b684db1 3514 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, false);
04ac3c0e 3515 } else if (ifmgd->probe_send_count < max_tries) {
bdcbd8e0
JB		 3516 mlme_dbg(sdata,
3517 "No probe response from AP %pM after %dms, try %d/%i\n",
3518 bssid, probe_wait_ms,
3519 ifmgd->probe_send_count, max_tries);
a43abf29
ML		 3520 ieee80211_mgd_probe_ap_send(sdata);
3521 } else {
b291ba11
JB		 3522 /*
3523 * We actually lost the connection ... or did we?
3524 * Let's make sure!
3525 */
b38afa87
BG		 3526 wiphy_debug(local->hw.wiphy,
3527 "%s: No probe response from AP %pM"
3528 " after %dms, disconnecting.\n",
3529 sdata->name,
180205bd 3530 bssid, probe_wait_ms);
04ac3c0e 3531
95acac61 3532 ieee80211_sta_connection_lost(sdata, bssid,
6b684db1 3533 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, false);
b291ba11
JB		 3534 }
3535 }
3536
8d61ffa5 3537 sdata_unlock(sdata);
f0706e82
JB		 3538}
3539
b291ba11
JB		 3540static void ieee80211_sta_bcn_mon_timer(unsigned long data)
3541{
3542 struct ieee80211_sub_if_data *sdata =
3543 (struct ieee80211_sub_if_data *) data;
3544 struct ieee80211_local *local = sdata->local;
3545
3546 if (local->quiescing)
3547 return;
3548
682bd38b 3549 sdata->u.mgd.connection_loss = false;
1e4dcd01
JO		 3550 ieee80211_queue_work(&sdata->local->hw,
3551 &sdata->u.mgd.beacon_connection_loss_work);
b291ba11
JB		 3552}
3553
3554static void ieee80211_sta_conn_mon_timer(unsigned long data)
3555{
3556 struct ieee80211_sub_if_data *sdata =
3557 (struct ieee80211_sub_if_data *) data;
3558 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3559 struct ieee80211_local *local = sdata->local;
3560
3561 if (local->quiescing)
3562 return;
3563
42935eca 3564 ieee80211_queue_work(&local->hw, &ifmgd->monitor_work);
b291ba11
JB		 3565}
3566
3567static void ieee80211_sta_monitor_work(struct work_struct *work)
3568{
3569 struct ieee80211_sub_if_data *sdata =
3570 container_of(work, struct ieee80211_sub_if_data,
3571 u.mgd.monitor_work);
3572
3573 ieee80211_mgd_probe_ap(sdata, false);
3574}
3575
9c6bd790
JB		 3576static void ieee80211_restart_sta_timer(struct ieee80211_sub_if_data *sdata)
3577{
494f1fe5
EP		 3578 u32 flags;
3579
ad935687 3580 if (sdata->vif.type == NL80211_IFTYPE_STATION) {
925e64c3 3581 __ieee80211_stop_poll(sdata);
ad935687 3582
b291ba11 3583 /* let's probe the connection once */
494f1fe5
EP		 3584 flags = sdata->local->hw.flags;
3585 if (!(flags & IEEE80211_HW_CONNECTION_MONITOR))
3586 ieee80211_queue_work(&sdata->local->hw,
3587 &sdata->u.mgd.monitor_work);
b291ba11 3588 /* and do all the other regular work too */
64592c8f 3589 ieee80211_queue_work(&sdata->local->hw, &sdata->work);
ad935687 3590 }
9c6bd790 3591}
f0706e82 3592
b8360ab8 3593#ifdef CONFIG_PM
1a1cb744
JB		 3594void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata)
3595{
3596 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3597 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
3598
3599 sdata_lock(sdata);
3600
3601 if (ifmgd->auth_data) {
3602 /*
3603 * If we are trying to authenticate while suspending, cfg80211
3604 * won't know and won't actually abort those attempts, thus we
3605 * need to do that ourselves.
3606 */
3607 ieee80211_send_deauth_disassoc(sdata,
3608 ifmgd->auth_data->bss->bssid,
3609 IEEE80211_STYPE_DEAUTH,
3610 WLAN_REASON_DEAUTH_LEAVING,
3611 false, frame_buf);
3612 ieee80211_destroy_auth_data(sdata, false);
3613 cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf,
3614 IEEE80211_DEAUTH_FRAME_LEN);
3615 }
3616
3617 sdata_unlock(sdata);
3618}
3619
b8360ab8
JB		 3620void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata)
3621{
3622 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3623
8d61ffa5 3624 sdata_lock(sdata);
b8360ab8 3625 if (!ifmgd->associated) {
8d61ffa5 3626 sdata_unlock(sdata);
b8360ab8
JB		 3627 return;
3628 }
3629
3630 if (sdata->flags & IEEE80211_SDATA_DISCONNECT_RESUME) {
3631 sdata->flags &= ~IEEE80211_SDATA_DISCONNECT_RESUME;
3632 mlme_dbg(sdata, "driver requested disconnect after resume\n");
3633 ieee80211_sta_connection_lost(sdata,
3634 ifmgd->associated->bssid,
3635 WLAN_REASON_UNSPECIFIED,
3636 true);
8d61ffa5 3637 sdata_unlock(sdata);
b8360ab8
JB		 3638 return;
3639 }
8d61ffa5 3640 sdata_unlock(sdata);
b8360ab8
JB		 3641}
3642#endif
3643
9c6bd790
JB		 3644/* interface setup */
3645void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata)
f0706e82 3646{
46900298 3647 struct ieee80211_if_managed *ifmgd;
988c0f72 3648
46900298 3649 ifmgd = &sdata->u.mgd;
b291ba11 3650 INIT_WORK(&ifmgd->monitor_work, ieee80211_sta_monitor_work);
46900298 3651 INIT_WORK(&ifmgd->chswitch_work, ieee80211_chswitch_work);
1e4dcd01
JO		 3652 INIT_WORK(&ifmgd->beacon_connection_loss_work,
3653 ieee80211_beacon_connection_loss_work);
882a7c69
JB		 3654 INIT_WORK(&ifmgd->csa_connection_drop_work,
3655 ieee80211_csa_connection_drop_work);
687da132 3656 INIT_WORK(&ifmgd->request_smps_work, ieee80211_request_smps_mgd_work);
46900298 3657 setup_timer(&ifmgd->timer, ieee80211_sta_timer,
c481ec97 3658 (unsigned long) sdata);
b291ba11
JB		 3659 setup_timer(&ifmgd->bcn_mon_timer, ieee80211_sta_bcn_mon_timer,
3660 (unsigned long) sdata);
3661 setup_timer(&ifmgd->conn_mon_timer, ieee80211_sta_conn_mon_timer,
3662 (unsigned long) sdata);
46900298 3663 setup_timer(&ifmgd->chswitch_timer, ieee80211_chswitch_timer,
9c6bd790 3664 (unsigned long) sdata);
9c6bd790 3665
ab1faead 3666 ifmgd->flags = 0;
1478acb3 3667 ifmgd->powersave = sdata->wdev.ps;
219c3867
AB		 3668 ifmgd->uapsd_queues = sdata->local->hw.uapsd_queues;
3669 ifmgd->uapsd_max_sp_len = sdata->local->hw.uapsd_max_sp_len;
67baf663 3670 ifmgd->p2p_noa_index = -1;
bbbdff9e 3671
0f78231b
JB		 3672 if (sdata->local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS)
3673 ifmgd->req_smps = IEEE80211_SMPS_AUTOMATIC;
3674 else
3675 ifmgd->req_smps = IEEE80211_SMPS_OFF;
f0706e82
JB		 3676}
3677
77fdaa12
JB		 3678/* scan finished notification */
3679void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local)
60f8b39c 3680{
31ee67a1 3681 struct ieee80211_sub_if_data *sdata;
60f8b39c 3682
77fdaa12
JB		 3683 /* Restart STA timers */
3684 rcu_read_lock();
370bd005
BG		 3685 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
3686 if (ieee80211_sdata_running(sdata))
3687 ieee80211_restart_sta_timer(sdata);
3688 }
77fdaa12
JB		 3689 rcu_read_unlock();
3690}
60f8b39c 3691
77fdaa12
JB		 3692int ieee80211_max_network_latency(struct notifier_block *nb,
3693 unsigned long data, void *dummy)
3694{
3695 s32 latency_usec = (s32) data;
3696 struct ieee80211_local *local =
3697 container_of(nb, struct ieee80211_local,
3698 network_latency_notifier);
1fa6f4af 3699
77fdaa12
JB		 3700 mutex_lock(&local->iflist_mtx);
3701 ieee80211_recalc_ps(local, latency_usec);
3702 mutex_unlock(&local->iflist_mtx);
dfe67012 3703
77fdaa12 3704 return 0;
9c6bd790
JB		 3705}
3706
f2d9d270
JB		 3707static u8 ieee80211_ht_vht_rx_chains(struct ieee80211_sub_if_data *sdata,
3708 struct cfg80211_bss *cbss)
3709{
3710 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3711 const u8 *ht_cap_ie, *vht_cap_ie;
3712 const struct ieee80211_ht_cap *ht_cap;
3713 const struct ieee80211_vht_cap *vht_cap;
3714 u8 chains = 1;
3715
3716 if (ifmgd->flags & IEEE80211_STA_DISABLE_HT)
3717 return chains;
3718
9caf0364 3719 ht_cap_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_HT_CAPABILITY);
f2d9d270
JB		 3720 if (ht_cap_ie && ht_cap_ie[1] >= sizeof(*ht_cap)) {
3721 ht_cap = (void *)(ht_cap_ie + 2);
3722 chains = ieee80211_mcs_to_chains(&ht_cap->mcs);
3723 /*
3724 * TODO: use "Tx Maximum Number Spatial Streams Supported" and
3725 * "Tx Unequal Modulation Supported" fields.
3726 */
3727 }
3728
3729 if (ifmgd->flags & IEEE80211_STA_DISABLE_VHT)
3730 return chains;
3731
9caf0364 3732 vht_cap_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_VHT_CAPABILITY);
f2d9d270
JB		 3733 if (vht_cap_ie && vht_cap_ie[1] >= sizeof(*vht_cap)) {
3734 u8 nss;
3735 u16 tx_mcs_map;
3736
3737 vht_cap = (void *)(vht_cap_ie + 2);
3738 tx_mcs_map = le16_to_cpu(vht_cap->supp_mcs.tx_mcs_map);
3739 for (nss = 8; nss > 0; nss--) {
3740 if (((tx_mcs_map >> (2 * (nss - 1))) & 3) !=
3741 IEEE80211_VHT_MCS_NOT_SUPPORTED)
3742 break;
3743 }
3744 /* TODO: use "Tx Highest Supported Long GI Data Rate" field? */
3745 chains = max(chains, nss);
3746 }
3747
3748 return chains;
3749}
3750
b17166a7
JB		 3751static int ieee80211_prep_channel(struct ieee80211_sub_if_data *sdata,
3752 struct cfg80211_bss *cbss)
a1cf775d
JB		 3753{
3754 struct ieee80211_local *local = sdata->local;
3755 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
24398e39 3756 const struct ieee80211_ht_operation *ht_oper = NULL;
f2d9d270 3757 const struct ieee80211_vht_operation *vht_oper = NULL;
24398e39 3758 struct ieee80211_supported_band *sband;
4bf88530 3759 struct cfg80211_chan_def chandef;
f2d9d270 3760 int ret;
a1cf775d 3761
24398e39
JB		 3762 sband = local->hw.wiphy->bands[cbss->channel->band];
3763
f2d9d270
JB		 3764 ifmgd->flags &= ~(IEEE80211_STA_DISABLE_40MHZ |
3765 IEEE80211_STA_DISABLE_80P80MHZ |
3766 IEEE80211_STA_DISABLE_160MHZ);
3767
9caf0364
JB		 3768 rcu_read_lock();
3769
f2d9d270
JB		 3770 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT) &&
3771 sband->ht_cap.ht_supported) {
08e6effa 3772 const u8 *ht_oper_ie, *ht_cap;
24398e39 3773
9caf0364 3774 ht_oper_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_HT_OPERATION);
24398e39
JB		 3775 if (ht_oper_ie && ht_oper_ie[1] >= sizeof(*ht_oper))
3776 ht_oper = (void *)(ht_oper_ie + 2);
08e6effa
JB		 3777
3778 ht_cap = ieee80211_bss_get_ie(cbss, WLAN_EID_HT_CAPABILITY);
3779 if (!ht_cap || ht_cap[1] < sizeof(struct ieee80211_ht_cap)) {
3780 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
3781 ht_oper = NULL;
3782 }
24398e39
JB		 3783 }
3784
f2d9d270
JB		 3785 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) &&
3786 sband->vht_cap.vht_supported) {
08e6effa 3787 const u8 *vht_oper_ie, *vht_cap;
f2d9d270 3788
9caf0364
JB		 3789 vht_oper_ie = ieee80211_bss_get_ie(cbss,
3790 WLAN_EID_VHT_OPERATION);
f2d9d270
JB		 3791 if (vht_oper_ie && vht_oper_ie[1] >= sizeof(*vht_oper))
3792 vht_oper = (void *)(vht_oper_ie + 2);
3793 if (vht_oper && !ht_oper) {
3794 vht_oper = NULL;
bdcbd8e0 3795 sdata_info(sdata,
f2d9d270 3796 "AP advertised VHT without HT, disabling both\n");
cb145022
JB		 3797 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
3798 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
24398e39 3799 }
08e6effa
JB		 3800
3801 vht_cap = ieee80211_bss_get_ie(cbss, WLAN_EID_VHT_CAPABILITY);
3802 if (!vht_cap || vht_cap[1] < sizeof(struct ieee80211_vht_cap)) {
3803 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
3804 vht_oper = NULL;
3805 }
24398e39
JB		 3806 }
3807
f2d9d270
JB		 3808 ifmgd->flags |= ieee80211_determine_chantype(sdata, sband,
3809 cbss->channel,
3810 ht_oper, vht_oper,
5cdaed1e 3811 &chandef, false);
04ecd257 3812
f2d9d270
JB		 3813 sdata->needed_rx_chains = min(ieee80211_ht_vht_rx_chains(sdata, cbss),
3814 local->rx_chains);
24398e39 3815
9caf0364
JB		 3816 rcu_read_unlock();
3817
04ecd257
JB		 3818 /* will change later if needed */
3819 sdata->smps_mode = IEEE80211_SMPS_OFF;
3820
34a3740d 3821 mutex_lock(&local->mtx);
f2d9d270
JB		 3822 /*
3823 * If this fails (possibly due to channel context sharing
3824 * on incompatible channels, e.g. 80+80 and 160 sharing the
3825 * same control channel) try to use a smaller bandwidth.
3826 */
3827 ret = ieee80211_vif_use_channel(sdata, &chandef,
3828 IEEE80211_CHANCTX_SHARED);
0418a445
SW		 3829
3830 /* don't downgrade for 5 and 10 MHz channels, though. */
3831 if (chandef.width == NL80211_CHAN_WIDTH_5 ||
3832 chandef.width == NL80211_CHAN_WIDTH_10)
34a3740d 3833 goto out;
0418a445 3834
d601cd8d 3835 while (ret && chandef.width != NL80211_CHAN_WIDTH_20_NOHT) {
e6b7cde4 3836 ifmgd->flags |= ieee80211_chandef_downgrade(&chandef);
d601cd8d
JB		 3837 ret = ieee80211_vif_use_channel(sdata, &chandef,
3838 IEEE80211_CHANCTX_SHARED);
3839 }
34a3740d
JB		 3840 out:
3841 mutex_unlock(&local->mtx);
f2d9d270 3842 return ret;
b17166a7
JB		 3843}
3844
3845static int ieee80211_prep_connection(struct ieee80211_sub_if_data *sdata,
3846 struct cfg80211_bss *cbss, bool assoc)
3847{
3848 struct ieee80211_local *local = sdata->local;
3849 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3850 struct ieee80211_bss *bss = (void *)cbss->priv;
3851 struct sta_info *new_sta = NULL;
3852 bool have_sta = false;
3853 int err;
3854
3855 if (WARN_ON(!ifmgd->auth_data && !ifmgd->assoc_data))
3856 return -EINVAL;
3857
3858 if (assoc) {
3859 rcu_read_lock();
3860 have_sta = sta_info_get(sdata, cbss->bssid);
3861 rcu_read_unlock();
3862 }
3863
3864 if (!have_sta) {
3865 new_sta = sta_info_alloc(sdata, cbss->bssid, GFP_KERNEL);
3866 if (!new_sta)
3867 return -ENOMEM;
3868 }
13e0c8e3 3869 if (new_sta) {
5d6a1b06
JB		 3870 u32 rates = 0, basic_rates = 0;
3871 bool have_higher_than_11mbit;
3872 int min_rate = INT_MAX, min_rate_index = -1;
2103dec1 3873 struct ieee80211_chanctx_conf *chanctx_conf;
b17166a7 3874 struct ieee80211_supported_band *sband;
8cef2c9d 3875 const struct cfg80211_bss_ies *ies;
2103dec1
SW		 3876 int shift;
3877 u32 rate_flags;
b17166a7
JB		 3878
3879 sband = local->hw.wiphy->bands[cbss->channel->band];
3880
3881 err = ieee80211_prep_channel(sdata, cbss);
3882 if (err) {
3883 sta_info_free(local, new_sta);
2103dec1 3884 return -EINVAL;
b17166a7 3885 }
2103dec1
SW		 3886 shift = ieee80211_vif_get_shift(&sdata->vif);
3887
3888 rcu_read_lock();
3889 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3890 if (WARN_ON(!chanctx_conf)) {
3891 rcu_read_unlock();
c368ddaa 3892 sta_info_free(local, new_sta);
2103dec1
SW		 3893 return -EINVAL;
3894 }
3895 rate_flags = ieee80211_chandef_rate_flags(&chanctx_conf->def);
3896 rcu_read_unlock();
5d6a1b06 3897
5d6a1b06
JB		 3898 ieee80211_get_rates(sband, bss->supp_rates,
3899 bss->supp_rates_len,
3900 &rates, &basic_rates,
3901 &have_higher_than_11mbit,
2103dec1
SW		 3902 &min_rate, &min_rate_index,
3903 shift, rate_flags);
5d6a1b06
JB		 3904
3905 /*
3906 * This used to be a workaround for basic rates missing
3907 * in the association response frame. Now that we no
3908 * longer use the basic rates from there, it probably
3909 * doesn't happen any more, but keep the workaround so
3910 * in case some *other* APs are buggy in different ways
3911 * we can connect -- with a warning.
3912 */
3913 if (!basic_rates && min_rate_index >= 0) {
bdcbd8e0
JB		 3914 sdata_info(sdata,
3915 "No basic rates, using min rate instead\n");
5d6a1b06
JB		 3916 basic_rates = BIT(min_rate_index);
3917 }
3918
13e0c8e3 3919 new_sta->sta.supp_rates[cbss->channel->band] = rates;
5d6a1b06
JB		 3920 sdata->vif.bss_conf.basic_rates = basic_rates;
3921
3922 /* cf. IEEE 802.11 9.2.12 */
55de908a 3923 if (cbss->channel->band == IEEE80211_BAND_2GHZ &&
5d6a1b06
JB		 3924 have_higher_than_11mbit)
3925 sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE;
3926 else
3927 sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE;
3928
3929 memcpy(ifmgd->bssid, cbss->bssid, ETH_ALEN);
3930
8c358bcd
JB		 3931 /* set timing information */
3932 sdata->vif.bss_conf.beacon_int = cbss->beacon_interval;
8cef2c9d 3933 rcu_read_lock();
ef429dad
JB		 3934 ies = rcu_dereference(cbss->beacon_ies);
3935 if (ies) {
3936 const u8 *tim_ie;
3937
3938 sdata->vif.bss_conf.sync_tsf = ies->tsf;
3939 sdata->vif.bss_conf.sync_device_ts =
3940 bss->device_ts_beacon;
3941 tim_ie = cfg80211_find_ie(WLAN_EID_TIM,
3942 ies->data, ies->len);
3943 if (tim_ie && tim_ie[1] >= 2)
3944 sdata->vif.bss_conf.sync_dtim_count = tim_ie[2];
3945 else
3946 sdata->vif.bss_conf.sync_dtim_count = 0;
3947 } else if (!(local->hw.flags &
3948 IEEE80211_HW_TIMING_BEACON_ONLY)) {
3949 ies = rcu_dereference(cbss->proberesp_ies);
3950 /* must be non-NULL since beacon IEs were NULL */
3951 sdata->vif.bss_conf.sync_tsf = ies->tsf;
3952 sdata->vif.bss_conf.sync_device_ts =
3953 bss->device_ts_presp;
3954 sdata->vif.bss_conf.sync_dtim_count = 0;
3955 } else {
3956 sdata->vif.bss_conf.sync_tsf = 0;
3957 sdata->vif.bss_conf.sync_device_ts = 0;
3958 sdata->vif.bss_conf.sync_dtim_count = 0;
3959 }
8cef2c9d 3960 rcu_read_unlock();
8c358bcd
JB		 3961
3962 /* tell driver about BSSID, basic rates and timing */
5d6a1b06 3963 ieee80211_bss_info_change_notify(sdata,
8c358bcd
JB		 3964 BSS_CHANGED_BSSID | BSS_CHANGED_BASIC_RATES |
3965 BSS_CHANGED_BEACON_INT);
a1cf775d
JB		 3966
3967 if (assoc)
13e0c8e3 3968 sta_info_pre_move_state(new_sta, IEEE80211_STA_AUTH);
a1cf775d 3969
13e0c8e3
JB		 3970 err = sta_info_insert(new_sta);
3971 new_sta = NULL;
a1cf775d 3972 if (err) {
bdcbd8e0
JB		 3973 sdata_info(sdata,
3974 "failed to insert STA entry for the AP (error %d)\n",
3975 err);
a1cf775d
JB		 3976 return err;
3977 }
3978 } else
b203ca39 3979 WARN_ON_ONCE(!ether_addr_equal(ifmgd->bssid, cbss->bssid));
a1cf775d
JB		 3980
3981 return 0;
3982}
3983
77fdaa12
JB		 3984/* config hooks */
3985int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
3986 struct cfg80211_auth_request *req)
9c6bd790 3987{
66e67e41
JB		 3988 struct ieee80211_local *local = sdata->local;
3989 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3990 struct ieee80211_mgd_auth_data *auth_data;
77fdaa12 3991 u16 auth_alg;
66e67e41
JB		 3992 int err;
3993
3994 /* prepare auth data structure */
9c6bd790 3995
77fdaa12
JB		 3996 switch (req->auth_type) {
3997 case NL80211_AUTHTYPE_OPEN_SYSTEM:
3998 auth_alg = WLAN_AUTH_OPEN;
3999 break;
4000 case NL80211_AUTHTYPE_SHARED_KEY:
66e67e41 4001 if (IS_ERR(local->wep_tx_tfm))
9dca9c49 4002 return -EOPNOTSUPP;
77fdaa12
JB		 4003 auth_alg = WLAN_AUTH_SHARED_KEY;
4004 break;
4005 case NL80211_AUTHTYPE_FT:
4006 auth_alg = WLAN_AUTH_FT;
4007 break;
4008 case NL80211_AUTHTYPE_NETWORK_EAP:
4009 auth_alg = WLAN_AUTH_LEAP;
4010 break;
6b8ece3a
JM		 4011 case NL80211_AUTHTYPE_SAE:
4012 auth_alg = WLAN_AUTH_SAE;
4013 break;
77fdaa12
JB		 4014 default:
4015 return -EOPNOTSUPP;
60f8b39c 4016 }
77fdaa12 4017
6b8ece3a
JM		 4018 auth_data = kzalloc(sizeof(*auth_data) + req->sae_data_len +
4019 req->ie_len, GFP_KERNEL);
66e67e41 4020 if (!auth_data)
9c6bd790 4021 return -ENOMEM;
77fdaa12 4022
66e67e41 4023 auth_data->bss = req->bss;
77fdaa12 4024
6b8ece3a
JM		 4025 if (req->sae_data_len >= 4) {
4026 __le16 *pos = (__le16 *) req->sae_data;
4027 auth_data->sae_trans = le16_to_cpu(pos[0]);
4028 auth_data->sae_status = le16_to_cpu(pos[1]);
4029 memcpy(auth_data->data, req->sae_data + 4,
4030 req->sae_data_len - 4);
4031 auth_data->data_len += req->sae_data_len - 4;
4032 }
4033
77fdaa12 4034 if (req->ie && req->ie_len) {
6b8ece3a
JM		 4035 memcpy(&auth_data->data[auth_data->data_len],
4036 req->ie, req->ie_len);
4037 auth_data->data_len += req->ie_len;
9c6bd790 4038 }
77fdaa12 4039
fffd0934 4040 if (req->key && req->key_len) {
66e67e41
JB		 4041 auth_data->key_len = req->key_len;
4042 auth_data->key_idx = req->key_idx;
4043 memcpy(auth_data->key, req->key, req->key_len);
fffd0934
JB		 4044 }
4045
66e67e41 4046 auth_data->algorithm = auth_alg;
60f8b39c 4047
66e67e41 4048 /* try to authenticate/probe */
2a33bee2 4049
66e67e41
JB		 4050 if ((ifmgd->auth_data && !ifmgd->auth_data->done) ||
4051 ifmgd->assoc_data) {
4052 err = -EBUSY;
4053 goto err_free;
2a33bee2
GE		 4054 }
4055
66e67e41
JB		 4056 if (ifmgd->auth_data)
4057 ieee80211_destroy_auth_data(sdata, false);
2a33bee2 4058
66e67e41
JB		 4059 /* prep auth_data so we don't go into idle on disassoc */
4060 ifmgd->auth_data = auth_data;
af6b6374 4061
7b119dc0
JB		 4062 if (ifmgd->associated) {
4063 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
4064
4065 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
4066 WLAN_REASON_UNSPECIFIED,
4067 false, frame_buf);
4068
6ff57cf8
JB		 4069 cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf,
4070 sizeof(frame_buf));
7b119dc0 4071 }
af6b6374 4072
bdcbd8e0 4073 sdata_info(sdata, "authenticate with %pM\n", req->bss->bssid);
e5b900d2 4074
a1cf775d
JB		 4075 err = ieee80211_prep_connection(sdata, req->bss, false);
4076 if (err)
66e67e41 4077 goto err_clear;
af6b6374 4078
66e67e41
JB		 4079 err = ieee80211_probe_auth(sdata);
4080 if (err) {
66e67e41
JB		 4081 sta_info_destroy_addr(sdata, req->bss->bssid);
4082 goto err_clear;
4083 }
4084
4085 /* hold our own reference */
5b112d3d 4086 cfg80211_ref_bss(local->hw.wiphy, auth_data->bss);
8d61ffa5 4087 return 0;
66e67e41
JB		 4088
4089 err_clear:
3d2abdfd
EP		 4090 memset(ifmgd->bssid, 0, ETH_ALEN);
4091 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID);
66e67e41
JB		 4092 ifmgd->auth_data = NULL;
4093 err_free:
4094 kfree(auth_data);
66e67e41 4095 return err;
af6b6374
JB		 4096}
4097
095d81ce
JB		 4098static bool ieee80211_usable_wmm_params(struct ieee80211_sub_if_data *sdata,
4099 const u8 *wmm_param, int len)
4100{
4101 const u8 *pos;
4102 size_t left;
4103
4104 if (len < 8)
4105 return false;
4106
4107 if (wmm_param[5] != 1 /* version */)
4108 return false;
4109
4110 pos = wmm_param + 8;
4111 left = len - 8;
4112
4113 for (; left >= 4; left -= 4, pos += 4) {
4114 u8 aifsn = pos[0] & 0x0f;
4115 u8 ecwmin = pos[1] & 0x0f;
4116 u8 ecwmax = (pos[1] & 0xf0) >> 4;
4117 int aci = (pos[0] >> 5) & 0x03;
4118
4119 if (aifsn < 2) {
4120 sdata_info(sdata,
4121 "AP has invalid WMM params (AIFSN=%d for ACI %d), disabling WMM\n",
4122 aifsn, aci);
4123 return false;
4124 }
4125 if (ecwmin > ecwmax) {
4126 sdata_info(sdata,
4127 "AP has invalid WMM params (ECWmin/max=%d/%d for ACI %d), disabling WMM\n",
4128 ecwmin, ecwmax, aci);
4129 return false;
4130 }
4131 }
4132
4133 return true;
4134}
4135
77fdaa12
JB		 4136int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
4137 struct cfg80211_assoc_request *req)
f0706e82 4138{
66e67e41 4139 struct ieee80211_local *local = sdata->local;
77fdaa12 4140 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
0c1ad2ca 4141 struct ieee80211_bss *bss = (void *)req->bss->priv;
66e67e41 4142 struct ieee80211_mgd_assoc_data *assoc_data;
c65dd147 4143 const struct cfg80211_bss_ies *beacon_ies;
4e74bfdb 4144 struct ieee80211_supported_band *sband;
b08fbbd8 4145 const u8 *ssidie, *ht_ie, *vht_ie;
2a33bee2 4146 int i, err;
f0706e82 4147
66e67e41
JB		 4148 assoc_data = kzalloc(sizeof(*assoc_data) + req->ie_len, GFP_KERNEL);
4149 if (!assoc_data)
4150 return -ENOMEM;
4151
9caf0364
JB		 4152 rcu_read_lock();
4153 ssidie = ieee80211_bss_get_ie(req->bss, WLAN_EID_SSID);
4154 if (!ssidie) {
4155 rcu_read_unlock();
4156 kfree(assoc_data);
4157 return -EINVAL;
4158 }
4159 memcpy(assoc_data->ssid, ssidie + 2, ssidie[1]);
4160 assoc_data->ssid_len = ssidie[1];
4161 rcu_read_unlock();
4162
7b119dc0
JB		 4163 if (ifmgd->associated) {
4164 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
4165
4166 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
4167 WLAN_REASON_UNSPECIFIED,
4168 false, frame_buf);
4169
6ff57cf8
JB		 4170 cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf,
4171 sizeof(frame_buf));
7b119dc0 4172 }
66e67e41
JB		 4173
4174 if (ifmgd->auth_data && !ifmgd->auth_data->done) {
4175 err = -EBUSY;
4176 goto err_free;
af6b6374 4177 }
77fdaa12 4178
66e67e41
JB		 4179 if (ifmgd->assoc_data) {
4180 err = -EBUSY;
4181 goto err_free;
4182 }
77fdaa12 4183
66e67e41
JB		 4184 if (ifmgd->auth_data) {
4185 bool match;
4186
4187 /* keep sta info, bssid if matching */
b203ca39 4188 match = ether_addr_equal(ifmgd->bssid, req->bss->bssid);
66e67e41 4189 ieee80211_destroy_auth_data(sdata, match);
2a33bee2
GE		 4190 }
4191
66e67e41 4192 /* prepare assoc data */
095d81ce 4193
d8ec4433
JO		 4194 ifmgd->beacon_crc_valid = false;
4195
095d81ce
JB		 4196 assoc_data->wmm = bss->wmm_used &&
4197 (local->hw.queues >= IEEE80211_NUM_ACS);
4198 if (assoc_data->wmm) {
4199 /* try to check validity of WMM params IE */
4200 const struct cfg80211_bss_ies *ies;
4201 const u8 *wp, *start, *end;
4202
4203 rcu_read_lock();
4204 ies = rcu_dereference(req->bss->ies);
4205 start = ies->data;
4206 end = start + ies->len;
4207
4208 while (true) {
4209 wp = cfg80211_find_vendor_ie(
4210 WLAN_OUI_MICROSOFT,
4211 WLAN_OUI_TYPE_MICROSOFT_WMM,
4212 start, end - start);
4213 if (!wp)
4214 break;
4215 start = wp + wp[1] + 2;
4216 /* if this IE is too short, try the next */
4217 if (wp[1] <= 4)
4218 continue;
4219 /* if this IE is WMM params, we found what we wanted */
4220 if (wp[6] == 1)
4221 break;
4222 }
4223
4224 if (!wp || !ieee80211_usable_wmm_params(sdata, wp + 2,
4225 wp[1] - 2)) {
4226 assoc_data->wmm = false;
4227 ifmgd->flags |= IEEE80211_STA_DISABLE_WMM;
4228 }
4229 rcu_read_unlock();
4230 }
4231
de5036aa
JB		 4232 /*
4233 * IEEE802.11n does not allow TKIP/WEP as pairwise ciphers in HT mode.
4234 * We still associate in non-HT mode (11a/b/g) if any one of these
4235 * ciphers is configured as pairwise.
4236 * We can set this to true for non-11n hardware, that'll be checked
4237 * separately along with the peer capabilities.
4238 */
1c4cb928 4239 for (i = 0; i < req->crypto.n_ciphers_pairwise; i++) {
77fdaa12
JB		 4240 if (req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_WEP40 ||
4241 req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_TKIP ||
1c4cb928 4242 req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_WEP104) {
a8243b72 4243 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
d545daba 4244 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
1c4cb928 4245 netdev_info(sdata->dev,
d545daba 4246 "disabling HT/VHT due to WEP/TKIP use\n");
1c4cb928
JB		 4247 }
4248 }
77fdaa12 4249
d545daba 4250 if (req->flags & ASSOC_REQ_DISABLE_HT) {
a8243b72 4251 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
d545daba
MP		 4252 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
4253 }
ef96a842 4254
dd5ecfea
JB		 4255 if (req->flags & ASSOC_REQ_DISABLE_VHT)
4256 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
4257
4e74bfdb
JB		 4258 /* Also disable HT if we don't support it or the AP doesn't use WMM */
4259 sband = local->hw.wiphy->bands[req->bss->channel->band];
4260 if (!sband->ht_cap.ht_supported ||
095d81ce
JB		 4261 local->hw.queues < IEEE80211_NUM_ACS || !bss->wmm_used ||
4262 ifmgd->flags & IEEE80211_STA_DISABLE_WMM) {
a8243b72 4263 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
095d81ce
JB		 4264 if (!bss->wmm_used &&
4265 !(ifmgd->flags & IEEE80211_STA_DISABLE_WMM))
1b49de26
JB		 4266 netdev_info(sdata->dev,
4267 "disabling HT as WMM/QoS is not supported by the AP\n");
1c4cb928 4268 }
4e74bfdb 4269
d545daba
MP		 4270 /* disable VHT if we don't support it or the AP doesn't use WMM */
4271 if (!sband->vht_cap.vht_supported ||
095d81ce
JB		 4272 local->hw.queues < IEEE80211_NUM_ACS || !bss->wmm_used ||
4273 ifmgd->flags & IEEE80211_STA_DISABLE_WMM) {
d545daba 4274 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
095d81ce
JB		 4275 if (!bss->wmm_used &&
4276 !(ifmgd->flags & IEEE80211_STA_DISABLE_WMM))
1b49de26
JB		 4277 netdev_info(sdata->dev,
4278 "disabling VHT as WMM/QoS is not supported by the AP\n");
d545daba
MP		 4279 }
4280
ef96a842
BG		 4281 memcpy(&ifmgd->ht_capa, &req->ht_capa, sizeof(ifmgd->ht_capa));
4282 memcpy(&ifmgd->ht_capa_mask, &req->ht_capa_mask,
4283 sizeof(ifmgd->ht_capa_mask));
4284
dd5ecfea
JB		 4285 memcpy(&ifmgd->vht_capa, &req->vht_capa, sizeof(ifmgd->vht_capa));
4286 memcpy(&ifmgd->vht_capa_mask, &req->vht_capa_mask,
4287 sizeof(ifmgd->vht_capa_mask));
4288
77fdaa12 4289 if (req->ie && req->ie_len) {
66e67e41
JB		 4290 memcpy(assoc_data->ie, req->ie, req->ie_len);
4291 assoc_data->ie_len = req->ie_len;
4292 }
f679f65d 4293
66e67e41 4294 assoc_data->bss = req->bss;
f679f65d 4295
af6b6374
JB		 4296 if (ifmgd->req_smps == IEEE80211_SMPS_AUTOMATIC) {
4297 if (ifmgd->powersave)
04ecd257 4298 sdata->smps_mode = IEEE80211_SMPS_DYNAMIC;
af6b6374 4299 else
04ecd257 4300 sdata->smps_mode = IEEE80211_SMPS_OFF;
af6b6374 4301 } else
04ecd257 4302 sdata->smps_mode = ifmgd->req_smps;
af6b6374 4303
66e67e41 4304 assoc_data->capability = req->bss->capability;
66e67e41
JB		 4305 assoc_data->supp_rates = bss->supp_rates;
4306 assoc_data->supp_rates_len = bss->supp_rates_len;
9dde6423 4307
9caf0364 4308 rcu_read_lock();
9dde6423
JB		 4309 ht_ie = ieee80211_bss_get_ie(req->bss, WLAN_EID_HT_OPERATION);
4310 if (ht_ie && ht_ie[1] >= sizeof(struct ieee80211_ht_operation))
4311 assoc_data->ap_ht_param =
4312 ((struct ieee80211_ht_operation *)(ht_ie + 2))->ht_param;
4313 else
a8243b72 4314 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
b08fbbd8
JB		 4315 vht_ie = ieee80211_bss_get_ie(req->bss, WLAN_EID_VHT_CAPABILITY);
4316 if (vht_ie && vht_ie[1] >= sizeof(struct ieee80211_vht_cap))
4317 memcpy(&assoc_data->ap_vht_cap, vht_ie + 2,
4318 sizeof(struct ieee80211_vht_cap));
4319 else
4320 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
9caf0364 4321 rcu_read_unlock();
63f170e0 4322
ab13315a 4323 if (bss->wmm_used && bss->uapsd_supported &&
24aa11ab
AB		 4324 (sdata->local->hw.flags & IEEE80211_HW_SUPPORTS_UAPSD) &&
4325 sdata->wmm_acm != 0xff) {
76f0303d 4326 assoc_data->uapsd = true;
ab13315a
KV		 4327 ifmgd->flags |= IEEE80211_STA_UAPSD_ENABLED;
4328 } else {
76f0303d 4329 assoc_data->uapsd = false;
ab13315a
KV		 4330 ifmgd->flags &= ~IEEE80211_STA_UAPSD_ENABLED;
4331 }
4332
77fdaa12 4333 if (req->prev_bssid)
66e67e41 4334 memcpy(assoc_data->prev_bssid, req->prev_bssid, ETH_ALEN);
77fdaa12
JB		 4335
4336 if (req->use_mfp) {
4337 ifmgd->mfp = IEEE80211_MFP_REQUIRED;
4338 ifmgd->flags |= IEEE80211_STA_MFP_ENABLED;
4339 } else {
4340 ifmgd->mfp = IEEE80211_MFP_DISABLED;
4341 ifmgd->flags &= ~IEEE80211_STA_MFP_ENABLED;
4342 }
4343
4344 if (req->crypto.control_port)
4345 ifmgd->flags |= IEEE80211_STA_CONTROL_PORT;
4346 else
4347 ifmgd->flags &= ~IEEE80211_STA_CONTROL_PORT;
4348
a621fa4d
JB		 4349 sdata->control_port_protocol = req->crypto.control_port_ethertype;
4350 sdata->control_port_no_encrypt = req->crypto.control_port_no_encrypt;
2475b1cc
MS		 4351 sdata->encrypt_headroom = ieee80211_cs_headroom(local, &req->crypto,
4352 sdata->vif.type);
a621fa4d 4353
66e67e41
JB		 4354 /* kick off associate process */
4355
4356 ifmgd->assoc_data = assoc_data;
826262c3 4357 ifmgd->dtim_period = 0;
989c6505 4358 ifmgd->have_beacon = false;
66e67e41 4359
a1cf775d
JB		 4360 err = ieee80211_prep_connection(sdata, req->bss, true);
4361 if (err)
4362 goto err_clear;
66e67e41 4363
c65dd147
EG		 4364 rcu_read_lock();
4365 beacon_ies = rcu_dereference(req->bss->beacon_ies);
826262c3 4366
c65dd147
EG		 4367 if (sdata->local->hw.flags & IEEE80211_HW_NEED_DTIM_BEFORE_ASSOC &&
4368 !beacon_ies) {
4369 /*
4370 * Wait up to one beacon interval ...
4371 * should this be more if we miss one?
4372 */
4373 sdata_info(sdata, "waiting for beacon from %pM\n",
4374 ifmgd->bssid);
4375 assoc_data->timeout = TU_TO_EXP_TIME(req->bss->beacon_interval);
89afe614 4376 assoc_data->timeout_started = true;
c65dd147
EG		 4377 assoc_data->need_beacon = true;
4378 } else if (beacon_ies) {
4379 const u8 *tim_ie = cfg80211_find_ie(WLAN_EID_TIM,
4380 beacon_ies->data,
4381 beacon_ies->len);
ef429dad
JB		 4382 u8 dtim_count = 0;
4383
c65dd147
EG		 4384 if (tim_ie && tim_ie[1] >= sizeof(struct ieee80211_tim_ie)) {
4385 const struct ieee80211_tim_ie *tim;
4386 tim = (void *)(tim_ie + 2);
4387 ifmgd->dtim_period = tim->dtim_period;
ef429dad 4388 dtim_count = tim->dtim_count;
826262c3 4389 }
989c6505 4390 ifmgd->have_beacon = true;
66e67e41 4391 assoc_data->timeout = jiffies;
89afe614 4392 assoc_data->timeout_started = true;
ef429dad
JB		 4393
4394 if (local->hw.flags & IEEE80211_HW_TIMING_BEACON_ONLY) {
4395 sdata->vif.bss_conf.sync_tsf = beacon_ies->tsf;
4396 sdata->vif.bss_conf.sync_device_ts =
4397 bss->device_ts_beacon;
4398 sdata->vif.bss_conf.sync_dtim_count = dtim_count;
4399 }
c65dd147
EG		 4400 } else {
4401 assoc_data->timeout = jiffies;
89afe614 4402 assoc_data->timeout_started = true;
66e67e41 4403 }
c65dd147
EG		 4404 rcu_read_unlock();
4405
8d61ffa5 4406 run_again(sdata, assoc_data->timeout);
66e67e41 4407
fcff4f10
PS		 4408 if (bss->corrupt_data) {
4409 char *corrupt_type = "data";
4410 if (bss->corrupt_data & IEEE80211_BSS_CORRUPT_BEACON) {
4411 if (bss->corrupt_data &
4412 IEEE80211_BSS_CORRUPT_PROBE_RESP)
4413 corrupt_type = "beacon and probe response";
4414 else
4415 corrupt_type = "beacon";
4416 } else if (bss->corrupt_data & IEEE80211_BSS_CORRUPT_PROBE_RESP)
4417 corrupt_type = "probe response";
bdcbd8e0
JB		 4418 sdata_info(sdata, "associating with AP with corrupt %s\n",
4419 corrupt_type);
fcff4f10
PS		 4420 }
4421
8d61ffa5 4422 return 0;
66e67e41 4423 err_clear:
3d2abdfd
EP		 4424 memset(ifmgd->bssid, 0, ETH_ALEN);
4425 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID);
66e67e41
JB		 4426 ifmgd->assoc_data = NULL;
4427 err_free:
4428 kfree(assoc_data);
66e67e41 4429 return err;
f0706e82
JB		 4430}
4431
77fdaa12 4432int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
63c9c5e7 4433 struct cfg80211_deauth_request *req)
f0706e82 4434{
46900298 4435 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
6ae16775 4436 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
6863255b 4437 bool tx = !req->local_state_change;
f0706e82 4438
c9c3a060
JB		 4439 if (ifmgd->auth_data &&
4440 ether_addr_equal(ifmgd->auth_data->bss->bssid, req->bssid)) {
4441 sdata_info(sdata,
4442 "aborting authentication with %pM by local choice (Reason: %u=%s)\n",
4443 req->bssid, req->reason_code,
4444 ieee80211_get_reason_code_string(req->reason_code));
0ff71613 4445
8c7d857c 4446 drv_mgd_prepare_tx(sdata->local, sdata);
37ad3888
JB		 4447 ieee80211_send_deauth_disassoc(sdata, req->bssid,
4448 IEEE80211_STYPE_DEAUTH,
6863255b 4449 req->reason_code, tx,
37ad3888 4450 frame_buf);
86552017 4451 ieee80211_destroy_auth_data(sdata, false);
c9c3a060
JB		 4452 cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf,
4453 IEEE80211_DEAUTH_FRAME_LEN);
86552017 4454
c9c3a060 4455 return 0;
8c7d857c
EG		 4456 }
4457
86552017
JB		 4458 if (ifmgd->associated &&
4459 ether_addr_equal(ifmgd->associated->bssid, req->bssid)) {
c9c3a060
JB		 4460 sdata_info(sdata,
4461 "deauthenticating from %pM by local choice (Reason: %u=%s)\n",
4462 req->bssid, req->reason_code,
4463 ieee80211_get_reason_code_string(req->reason_code));
4464
86552017
JB		 4465 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
4466 req->reason_code, tx, frame_buf);
6ff57cf8
JB		 4467 cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf,
4468 IEEE80211_DEAUTH_FRAME_LEN);
c9c3a060
JB		 4469 return 0;
4470 }
86552017 4471
c9c3a060 4472 return -ENOTCONN;
f0706e82 4473}
84363e6e 4474
77fdaa12 4475int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
63c9c5e7 4476 struct cfg80211_disassoc_request *req)
9c6bd790 4477{
77fdaa12 4478 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
e69e95db 4479 u8 bssid[ETH_ALEN];
6ae16775 4480 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
9c6bd790 4481
8d8b261a
JB		 4482 /*
4483 * cfg80211 should catch this ... but it's racy since
4484 * we can receive a disassoc frame, process it, hand it
4485 * to cfg80211 while that's in a locked section already
4486 * trying to tell us that the user wants to disconnect.
4487 */
8d61ffa5 4488 if (ifmgd->associated != req->bss)
77fdaa12 4489 return -ENOLINK;
77fdaa12 4490
bdcbd8e0 4491 sdata_info(sdata,
dfa1ad29
CO		 4492 "disassociating from %pM by local choice (Reason: %u=%s)\n",
4493 req->bss->bssid, req->reason_code, ieee80211_get_reason_code_string(req->reason_code));
0ff71613 4494
e69e95db 4495 memcpy(bssid, req->bss->bssid, ETH_ALEN);
37ad3888
JB		 4496 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DISASSOC,
4497 req->reason_code, !req->local_state_change,
4498 frame_buf);
10f644a4 4499
6ff57cf8
JB		 4500 cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf,
4501 IEEE80211_DEAUTH_FRAME_LEN);
bc83b681 4502
10f644a4
JB		 4503 return 0;
4504}
026331c4 4505
afa762f6 4506void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata)
54e4ffb2
JB		 4507{
4508 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4509
49921859
BG		 4510 /*
4511 * Make sure some work items will not run after this,
4512 * they will not do anything but might not have been
4513 * cancelled when disconnecting.
4514 */
4515 cancel_work_sync(&ifmgd->monitor_work);
4516 cancel_work_sync(&ifmgd->beacon_connection_loss_work);
4517 cancel_work_sync(&ifmgd->request_smps_work);
4518 cancel_work_sync(&ifmgd->csa_connection_drop_work);
4519 cancel_work_sync(&ifmgd->chswitch_work);
4520
8d61ffa5 4521 sdata_lock(sdata);
959867fa
JB		 4522 if (ifmgd->assoc_data) {
4523 struct cfg80211_bss *bss = ifmgd->assoc_data->bss;
54e4ffb2 4524 ieee80211_destroy_assoc_data(sdata, false);
959867fa
JB		 4525 cfg80211_assoc_timeout(sdata->dev, bss);
4526 }
54e4ffb2
JB		 4527 if (ifmgd->auth_data)
4528 ieee80211_destroy_auth_data(sdata, false);
4529 del_timer_sync(&ifmgd->timer);
8d61ffa5 4530 sdata_unlock(sdata);
54e4ffb2
JB		 4531}
4532
a97c13c3
JO		 4533void ieee80211_cqm_rssi_notify(struct ieee80211_vif *vif,
4534 enum nl80211_cqm_rssi_threshold_event rssi_event,
4535 gfp_t gfp)
4536{
4537 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
4538
b5878a2d
JB		 4539 trace_api_cqm_rssi_notify(sdata, rssi_event);
4540
a97c13c3
JO		 4541 cfg80211_cqm_rssi_notify(sdata->dev, rssi_event, gfp);
4542}
4543EXPORT_SYMBOL(ieee80211_cqm_rssi_notify);
ubuntu-zesty-kernel mirror