Commit | Line | Data |
---|---|---|
f0706e82 JB |
1 | /* |
2 | * BSS client mode implementation | |
5394af4d | 3 | * Copyright 2003-2008, Jouni Malinen <j@w1.fi> |
f0706e82 JB |
4 | * Copyright 2004, Instant802 Networks, Inc. |
5 | * Copyright 2005, Devicescape Software, Inc. | |
6 | * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz> | |
7 | * Copyright 2007, Michael Wu <flamingice@sourmilk.net> | |
d98ad83e | 8 | * Copyright 2013-2014 Intel Mobile Communications GmbH |
322cd406 | 9 | * Copyright (C) 2015 Intel Deutschland GmbH |
f0706e82 JB |
10 | * |
11 | * This program is free software; you can redistribute it and/or modify | |
12 | * it under the terms of the GNU General Public License version 2 as | |
13 | * published by the Free Software Foundation. | |
14 | */ | |
15 | ||
5b323edb | 16 | #include <linux/delay.h> |
f0706e82 JB |
17 | #include <linux/if_ether.h> |
18 | #include <linux/skbuff.h> | |
f0706e82 | 19 | #include <linux/if_arp.h> |
f0706e82 | 20 | #include <linux/etherdevice.h> |
d9b93842 | 21 | #include <linux/moduleparam.h> |
d0709a65 | 22 | #include <linux/rtnetlink.h> |
e8db0be1 | 23 | #include <linux/pm_qos.h> |
d91f36db | 24 | #include <linux/crc32.h> |
5a0e3ad6 | 25 | #include <linux/slab.h> |
bc3b2d7f | 26 | #include <linux/export.h> |
f0706e82 | 27 | #include <net/mac80211.h> |
472dbc45 | 28 | #include <asm/unaligned.h> |
60f8b39c | 29 | |
f0706e82 | 30 | #include "ieee80211_i.h" |
24487981 | 31 | #include "driver-ops.h" |
2c8dccc7 JB |
32 | #include "rate.h" |
33 | #include "led.h" | |
f0706e82 | 34 | |
1672c0e3 | 35 | #define IEEE80211_AUTH_TIMEOUT (HZ / 5) |
cb236d2d | 36 | #define IEEE80211_AUTH_TIMEOUT_LONG (HZ / 2) |
1672c0e3 JB |
37 | #define IEEE80211_AUTH_TIMEOUT_SHORT (HZ / 10) |
38 | #define IEEE80211_AUTH_MAX_TRIES 3 | |
39 | #define IEEE80211_AUTH_WAIT_ASSOC (HZ * 5) | |
40 | #define IEEE80211_ASSOC_TIMEOUT (HZ / 5) | |
cb236d2d | 41 | #define IEEE80211_ASSOC_TIMEOUT_LONG (HZ / 2) |
1672c0e3 JB |
42 | #define IEEE80211_ASSOC_TIMEOUT_SHORT (HZ / 10) |
43 | #define IEEE80211_ASSOC_MAX_TRIES 3 | |
66e67e41 | 44 | |
180205bd BG |
45 | static int max_nullfunc_tries = 2; |
46 | module_param(max_nullfunc_tries, int, 0644); | |
47 | MODULE_PARM_DESC(max_nullfunc_tries, | |
48 | "Maximum nullfunc tx tries before disconnecting (reason 4)."); | |
49 | ||
50 | static int max_probe_tries = 5; | |
51 | module_param(max_probe_tries, int, 0644); | |
52 | MODULE_PARM_DESC(max_probe_tries, | |
53 | "Maximum probe tries before disconnecting (reason 4)."); | |
b291ba11 JB |
54 | |
55 | /* | |
7ccc8bd7 FF |
56 | * Beacon loss timeout is calculated as N frames times the |
57 | * advertised beacon interval. This may need to be somewhat | |
58 | * higher than what hardware might detect to account for | |
59 | * delays in the host processing frames. But since we also | |
60 | * probe on beacon miss before declaring the connection lost | |
61 | * default to what we want. | |
b291ba11 | 62 | */ |
59c1ec2b BG |
63 | static int beacon_loss_count = 7; |
64 | module_param(beacon_loss_count, int, 0644); | |
65 | MODULE_PARM_DESC(beacon_loss_count, | |
66 | "Number of beacon intervals before we decide beacon was lost."); | |
7ccc8bd7 | 67 | |
b291ba11 JB |
68 | /* |
69 | * Time the connection can be idle before we probe | |
70 | * it to see if we can still talk to the AP. | |
71 | */ | |
d1c5091f | 72 | #define IEEE80211_CONNECTION_IDLE_TIME (30 * HZ) |
b291ba11 JB |
73 | /* |
74 | * Time we wait for a probe response after sending | |
75 | * a probe request because of beacon loss or for | |
76 | * checking the connection still works. | |
77 | */ | |
180205bd BG |
78 | static int probe_wait_ms = 500; |
79 | module_param(probe_wait_ms, int, 0644); | |
80 | MODULE_PARM_DESC(probe_wait_ms, | |
81 | "Maximum time(ms) to wait for probe response" | |
82 | " before disconnecting (reason 4)."); | |
f0706e82 | 83 | |
17e4ec14 JM |
84 | /* |
85 | * Weight given to the latest Beacon frame when calculating average signal | |
86 | * strength for Beacon frames received in the current BSS. This must be | |
87 | * between 1 and 15. | |
88 | */ | |
89 | #define IEEE80211_SIGNAL_AVE_WEIGHT 3 | |
90 | ||
391a200a JM |
91 | /* |
92 | * How many Beacon frames need to have been used in average signal strength | |
93 | * before starting to indicate signal change events. | |
94 | */ | |
95 | #define IEEE80211_SIGNAL_AVE_MIN_COUNT 4 | |
96 | ||
ca386f31 JB |
97 | /* |
98 | * We can have multiple work items (and connection probing) | |
99 | * scheduling this timer, but we need to take care to only | |
100 | * reschedule it when it should fire _earlier_ than it was | |
101 | * asked for before, or if it's not pending right now. This | |
102 | * function ensures that. Note that it then is required to | |
103 | * run this function for all timeouts after the first one | |
104 | * has happened -- the work that runs from this timer will | |
105 | * do that. | |
106 | */ | |
8d61ffa5 JB |
107 | static void run_again(struct ieee80211_sub_if_data *sdata, |
108 | unsigned long timeout) | |
ca386f31 | 109 | { |
8d61ffa5 | 110 | sdata_assert_lock(sdata); |
ca386f31 | 111 | |
8d61ffa5 JB |
112 | if (!timer_pending(&sdata->u.mgd.timer) || |
113 | time_before(timeout, sdata->u.mgd.timer.expires)) | |
114 | mod_timer(&sdata->u.mgd.timer, timeout); | |
ca386f31 JB |
115 | } |
116 | ||
d3a910a8 | 117 | void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata) |
b291ba11 | 118 | { |
c1288b12 | 119 | if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER) |
b291ba11 JB |
120 | return; |
121 | ||
30686bf7 | 122 | if (ieee80211_hw_check(&sdata->local->hw, CONNECTION_MONITOR)) |
7eeff74c JB |
123 | return; |
124 | ||
b291ba11 | 125 | mod_timer(&sdata->u.mgd.bcn_mon_timer, |
7ccc8bd7 | 126 | round_jiffies_up(jiffies + sdata->u.mgd.beacon_timeout)); |
b291ba11 JB |
127 | } |
128 | ||
be099e82 LR |
129 | void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata) |
130 | { | |
0c699c3a LR |
131 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
132 | ||
8628172f SG |
133 | if (unlikely(!sdata->u.mgd.associated)) |
134 | return; | |
135 | ||
448cd2e2 EP |
136 | ifmgd->probe_send_count = 0; |
137 | ||
30686bf7 | 138 | if (ieee80211_hw_check(&sdata->local->hw, CONNECTION_MONITOR)) |
be099e82 LR |
139 | return; |
140 | ||
141 | mod_timer(&sdata->u.mgd.conn_mon_timer, | |
142 | round_jiffies_up(jiffies + IEEE80211_CONNECTION_IDLE_TIME)); | |
143 | } | |
144 | ||
5484e237 | 145 | static int ecw2cw(int ecw) |
60f8b39c | 146 | { |
5484e237 | 147 | return (1 << ecw) - 1; |
60f8b39c JB |
148 | } |
149 | ||
6565ec9b JB |
150 | static u32 |
151 | ieee80211_determine_chantype(struct ieee80211_sub_if_data *sdata, | |
152 | struct ieee80211_supported_band *sband, | |
153 | struct ieee80211_channel *channel, | |
53b954ee | 154 | const struct ieee80211_ht_cap *ht_cap, |
6565ec9b JB |
155 | const struct ieee80211_ht_operation *ht_oper, |
156 | const struct ieee80211_vht_operation *vht_oper, | |
5cdaed1e | 157 | struct cfg80211_chan_def *chandef, bool tracking) |
6565ec9b | 158 | { |
5cdaed1e | 159 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
6565ec9b | 160 | struct cfg80211_chan_def vht_chandef; |
179b8fc7 | 161 | struct ieee80211_sta_ht_cap sta_ht_cap; |
6565ec9b JB |
162 | u32 ht_cfreq, ret; |
163 | ||
179b8fc7 CRI |
164 | memcpy(&sta_ht_cap, &sband->ht_cap, sizeof(sta_ht_cap)); |
165 | ieee80211_apply_htcap_overrides(sdata, &sta_ht_cap); | |
166 | ||
6565ec9b JB |
167 | chandef->chan = channel; |
168 | chandef->width = NL80211_CHAN_WIDTH_20_NOHT; | |
169 | chandef->center_freq1 = channel->center_freq; | |
170 | chandef->center_freq2 = 0; | |
171 | ||
179b8fc7 | 172 | if (!ht_cap || !ht_oper || !sta_ht_cap.ht_supported) { |
6565ec9b JB |
173 | ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT; |
174 | goto out; | |
175 | } | |
176 | ||
177 | chandef->width = NL80211_CHAN_WIDTH_20; | |
178 | ||
53b954ee EP |
179 | if (!(ht_cap->cap_info & |
180 | cpu_to_le16(IEEE80211_HT_CAP_SUP_WIDTH_20_40))) { | |
f3000e1b | 181 | ret = IEEE80211_STA_DISABLE_40MHZ; |
7e6225a1 | 182 | vht_chandef = *chandef; |
53b954ee EP |
183 | goto out; |
184 | } | |
185 | ||
6565ec9b JB |
186 | ht_cfreq = ieee80211_channel_to_frequency(ht_oper->primary_chan, |
187 | channel->band); | |
188 | /* check that channel matches the right operating channel */ | |
5cdaed1e | 189 | if (!tracking && channel->center_freq != ht_cfreq) { |
6565ec9b JB |
190 | /* |
191 | * It's possible that some APs are confused here; | |
192 | * Netgear WNDR3700 sometimes reports 4 higher than | |
193 | * the actual channel in association responses, but | |
194 | * since we look at probe response/beacon data here | |
195 | * it should be OK. | |
196 | */ | |
5cdaed1e JB |
197 | sdata_info(sdata, |
198 | "Wrong control channel: center-freq: %d ht-cfreq: %d ht->primary_chan: %d band: %d - Disabling HT\n", | |
199 | channel->center_freq, ht_cfreq, | |
200 | ht_oper->primary_chan, channel->band); | |
6565ec9b JB |
201 | ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT; |
202 | goto out; | |
203 | } | |
204 | ||
205 | /* check 40 MHz support, if we have it */ | |
179b8fc7 | 206 | if (sta_ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40) { |
6565ec9b JB |
207 | switch (ht_oper->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) { |
208 | case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: | |
209 | chandef->width = NL80211_CHAN_WIDTH_40; | |
210 | chandef->center_freq1 += 10; | |
211 | break; | |
212 | case IEEE80211_HT_PARAM_CHA_SEC_BELOW: | |
213 | chandef->width = NL80211_CHAN_WIDTH_40; | |
214 | chandef->center_freq1 -= 10; | |
215 | break; | |
216 | } | |
217 | } else { | |
218 | /* 40 MHz (and 80 MHz) must be supported for VHT */ | |
219 | ret = IEEE80211_STA_DISABLE_VHT; | |
85220d71 JB |
220 | /* also mark 40 MHz disabled */ |
221 | ret |= IEEE80211_STA_DISABLE_40MHZ; | |
6565ec9b JB |
222 | goto out; |
223 | } | |
224 | ||
225 | if (!vht_oper || !sband->vht_cap.vht_supported) { | |
226 | ret = IEEE80211_STA_DISABLE_VHT; | |
227 | goto out; | |
228 | } | |
229 | ||
230 | vht_chandef.chan = channel; | |
231 | vht_chandef.center_freq1 = | |
232 | ieee80211_channel_to_frequency(vht_oper->center_freq_seg1_idx, | |
233 | channel->band); | |
234 | vht_chandef.center_freq2 = 0; | |
235 | ||
6565ec9b JB |
236 | switch (vht_oper->chan_width) { |
237 | case IEEE80211_VHT_CHANWIDTH_USE_HT: | |
238 | vht_chandef.width = chandef->width; | |
cb664981 | 239 | vht_chandef.center_freq1 = chandef->center_freq1; |
6565ec9b JB |
240 | break; |
241 | case IEEE80211_VHT_CHANWIDTH_80MHZ: | |
242 | vht_chandef.width = NL80211_CHAN_WIDTH_80; | |
243 | break; | |
244 | case IEEE80211_VHT_CHANWIDTH_160MHZ: | |
245 | vht_chandef.width = NL80211_CHAN_WIDTH_160; | |
246 | break; | |
247 | case IEEE80211_VHT_CHANWIDTH_80P80MHZ: | |
248 | vht_chandef.width = NL80211_CHAN_WIDTH_80P80; | |
6553bf04 JB |
249 | vht_chandef.center_freq2 = |
250 | ieee80211_channel_to_frequency( | |
251 | vht_oper->center_freq_seg2_idx, | |
252 | channel->band); | |
6565ec9b JB |
253 | break; |
254 | default: | |
5cdaed1e | 255 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) |
30eb1dc2 JB |
256 | sdata_info(sdata, |
257 | "AP VHT operation IE has invalid channel width (%d), disable VHT\n", | |
258 | vht_oper->chan_width); | |
6565ec9b JB |
259 | ret = IEEE80211_STA_DISABLE_VHT; |
260 | goto out; | |
261 | } | |
262 | ||
263 | if (!cfg80211_chandef_valid(&vht_chandef)) { | |
5cdaed1e | 264 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) |
30eb1dc2 JB |
265 | sdata_info(sdata, |
266 | "AP VHT information is invalid, disable VHT\n"); | |
6565ec9b JB |
267 | ret = IEEE80211_STA_DISABLE_VHT; |
268 | goto out; | |
269 | } | |
270 | ||
271 | if (cfg80211_chandef_identical(chandef, &vht_chandef)) { | |
272 | ret = 0; | |
273 | goto out; | |
274 | } | |
275 | ||
276 | if (!cfg80211_chandef_compatible(chandef, &vht_chandef)) { | |
5cdaed1e | 277 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) |
30eb1dc2 JB |
278 | sdata_info(sdata, |
279 | "AP VHT information doesn't match HT, disable VHT\n"); | |
6565ec9b JB |
280 | ret = IEEE80211_STA_DISABLE_VHT; |
281 | goto out; | |
282 | } | |
283 | ||
284 | *chandef = vht_chandef; | |
285 | ||
286 | ret = 0; | |
287 | ||
288 | out: | |
963a1852 JB |
289 | /* |
290 | * When tracking the current AP, don't do any further checks if the | |
291 | * new chandef is identical to the one we're currently using for the | |
292 | * connection. This keeps us from playing ping-pong with regulatory, | |
293 | * without it the following can happen (for example): | |
294 | * - connect to an AP with 80 MHz, world regdom allows 80 MHz | |
295 | * - AP advertises regdom US | |
296 | * - CRDA loads regdom US with 80 MHz prohibited (old database) | |
297 | * - the code below detects an unsupported channel, downgrades, and | |
298 | * we disconnect from the AP in the caller | |
299 | * - disconnect causes CRDA to reload world regdomain and the game | |
300 | * starts anew. | |
301 | * (see https://bugzilla.kernel.org/show_bug.cgi?id=70881) | |
302 | * | |
303 | * It seems possible that there are still scenarios with CSA or real | |
304 | * bandwidth changes where a this could happen, but those cases are | |
305 | * less common and wouldn't completely prevent using the AP. | |
306 | */ | |
307 | if (tracking && | |
308 | cfg80211_chandef_identical(chandef, &sdata->vif.bss_conf.chandef)) | |
309 | return ret; | |
310 | ||
586e01ed JB |
311 | /* don't print the message below for VHT mismatch if VHT is disabled */ |
312 | if (ret & IEEE80211_STA_DISABLE_VHT) | |
313 | vht_chandef = *chandef; | |
314 | ||
ddfe49b4 JB |
315 | /* |
316 | * Ignore the DISABLED flag when we're already connected and only | |
317 | * tracking the APs beacon for bandwidth changes - otherwise we | |
318 | * might get disconnected here if we connect to an AP, update our | |
319 | * regulatory information based on the AP's country IE and the | |
320 | * information we have is wrong/outdated and disables the channel | |
321 | * that we're actually using for the connection to the AP. | |
322 | */ | |
6565ec9b | 323 | while (!cfg80211_chandef_usable(sdata->local->hw.wiphy, chandef, |
ddfe49b4 JB |
324 | tracking ? 0 : |
325 | IEEE80211_CHAN_DISABLED)) { | |
6565ec9b JB |
326 | if (WARN_ON(chandef->width == NL80211_CHAN_WIDTH_20_NOHT)) { |
327 | ret = IEEE80211_STA_DISABLE_HT | | |
328 | IEEE80211_STA_DISABLE_VHT; | |
b56e4b85 | 329 | break; |
6565ec9b JB |
330 | } |
331 | ||
e6b7cde4 | 332 | ret |= ieee80211_chandef_downgrade(chandef); |
6565ec9b JB |
333 | } |
334 | ||
5cdaed1e | 335 | if (chandef->width != vht_chandef.width && !tracking) |
6565ec9b JB |
336 | sdata_info(sdata, |
337 | "capabilities/regulatory prevented using AP HT/VHT configuration, downgraded\n"); | |
338 | ||
339 | WARN_ON_ONCE(!cfg80211_chandef_valid(chandef)); | |
340 | return ret; | |
341 | } | |
342 | ||
30eb1dc2 JB |
343 | static int ieee80211_config_bw(struct ieee80211_sub_if_data *sdata, |
344 | struct sta_info *sta, | |
53b954ee | 345 | const struct ieee80211_ht_cap *ht_cap, |
30eb1dc2 JB |
346 | const struct ieee80211_ht_operation *ht_oper, |
347 | const struct ieee80211_vht_operation *vht_oper, | |
348 | const u8 *bssid, u32 *changed) | |
d5522e03 JB |
349 | { |
350 | struct ieee80211_local *local = sdata->local; | |
30eb1dc2 | 351 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
d5522e03 | 352 | struct ieee80211_supported_band *sband; |
55de908a | 353 | struct ieee80211_channel *chan; |
30eb1dc2 | 354 | struct cfg80211_chan_def chandef; |
9ed6bcce | 355 | u16 ht_opmode; |
30eb1dc2 JB |
356 | u32 flags; |
357 | enum ieee80211_sta_rx_bandwidth new_sta_bw; | |
358 | int ret; | |
d5522e03 | 359 | |
30eb1dc2 JB |
360 | /* if HT was/is disabled, don't track any bandwidth changes */ |
361 | if (ifmgd->flags & IEEE80211_STA_DISABLE_HT || !ht_oper) | |
1128958d JB |
362 | return 0; |
363 | ||
30eb1dc2 JB |
364 | /* don't check VHT if we associated as non-VHT station */ |
365 | if (ifmgd->flags & IEEE80211_STA_DISABLE_VHT) | |
366 | vht_oper = NULL; | |
367 | ||
368 | if (WARN_ON_ONCE(!sta)) | |
369 | return -EINVAL; | |
370 | ||
017b45bb AA |
371 | /* |
372 | * if bss configuration changed store the new one - | |
373 | * this may be applicable even if channel is identical | |
374 | */ | |
375 | ht_opmode = le16_to_cpu(ht_oper->operation_mode); | |
376 | if (sdata->vif.bss_conf.ht_operation_mode != ht_opmode) { | |
377 | *changed |= BSS_CHANGED_HT; | |
378 | sdata->vif.bss_conf.ht_operation_mode = ht_opmode; | |
379 | } | |
380 | ||
f2d9330e | 381 | chan = sdata->vif.bss_conf.chandef.chan; |
55de908a | 382 | sband = local->hw.wiphy->bands[chan->band]; |
d5522e03 | 383 | |
30eb1dc2 | 384 | /* calculate new channel (type) based on HT/VHT operation IEs */ |
53b954ee EP |
385 | flags = ieee80211_determine_chantype(sdata, sband, chan, |
386 | ht_cap, ht_oper, vht_oper, | |
387 | &chandef, true); | |
30eb1dc2 JB |
388 | |
389 | /* | |
390 | * Downgrade the new channel if we associated with restricted | |
391 | * capabilities. For example, if we associated as a 20 MHz STA | |
392 | * to a 40 MHz AP (due to regulatory, capabilities or config | |
393 | * reasons) then switching to a 40 MHz channel now won't do us | |
394 | * any good -- we couldn't use it with the AP. | |
395 | */ | |
396 | if (ifmgd->flags & IEEE80211_STA_DISABLE_80P80MHZ && | |
397 | chandef.width == NL80211_CHAN_WIDTH_80P80) | |
e6b7cde4 | 398 | flags |= ieee80211_chandef_downgrade(&chandef); |
30eb1dc2 JB |
399 | if (ifmgd->flags & IEEE80211_STA_DISABLE_160MHZ && |
400 | chandef.width == NL80211_CHAN_WIDTH_160) | |
e6b7cde4 | 401 | flags |= ieee80211_chandef_downgrade(&chandef); |
30eb1dc2 JB |
402 | if (ifmgd->flags & IEEE80211_STA_DISABLE_40MHZ && |
403 | chandef.width > NL80211_CHAN_WIDTH_20) | |
e6b7cde4 | 404 | flags |= ieee80211_chandef_downgrade(&chandef); |
30eb1dc2 JB |
405 | |
406 | if (cfg80211_chandef_identical(&chandef, &sdata->vif.bss_conf.chandef)) | |
407 | return 0; | |
408 | ||
409 | sdata_info(sdata, | |
410 | "AP %pM changed bandwidth, new config is %d MHz, width %d (%d/%d MHz)\n", | |
411 | ifmgd->bssid, chandef.chan->center_freq, chandef.width, | |
412 | chandef.center_freq1, chandef.center_freq2); | |
413 | ||
414 | if (flags != (ifmgd->flags & (IEEE80211_STA_DISABLE_HT | | |
415 | IEEE80211_STA_DISABLE_VHT | | |
416 | IEEE80211_STA_DISABLE_40MHZ | | |
417 | IEEE80211_STA_DISABLE_80P80MHZ | | |
418 | IEEE80211_STA_DISABLE_160MHZ)) || | |
419 | !cfg80211_chandef_valid(&chandef)) { | |
420 | sdata_info(sdata, | |
421 | "AP %pM changed bandwidth in a way we can't support - disconnect\n", | |
422 | ifmgd->bssid); | |
423 | return -EINVAL; | |
424 | } | |
425 | ||
426 | switch (chandef.width) { | |
427 | case NL80211_CHAN_WIDTH_20_NOHT: | |
428 | case NL80211_CHAN_WIDTH_20: | |
429 | new_sta_bw = IEEE80211_STA_RX_BW_20; | |
430 | break; | |
4bf88530 | 431 | case NL80211_CHAN_WIDTH_40: |
30eb1dc2 | 432 | new_sta_bw = IEEE80211_STA_RX_BW_40; |
64f68e5d | 433 | break; |
30eb1dc2 JB |
434 | case NL80211_CHAN_WIDTH_80: |
435 | new_sta_bw = IEEE80211_STA_RX_BW_80; | |
436 | break; | |
437 | case NL80211_CHAN_WIDTH_80P80: | |
438 | case NL80211_CHAN_WIDTH_160: | |
439 | new_sta_bw = IEEE80211_STA_RX_BW_160; | |
64f68e5d | 440 | break; |
30eb1dc2 JB |
441 | default: |
442 | return -EINVAL; | |
64f68e5d | 443 | } |
d5522e03 | 444 | |
30eb1dc2 JB |
445 | if (new_sta_bw > sta->cur_max_bandwidth) |
446 | new_sta_bw = sta->cur_max_bandwidth; | |
64f68e5d | 447 | |
30eb1dc2 JB |
448 | if (new_sta_bw < sta->sta.bandwidth) { |
449 | sta->sta.bandwidth = new_sta_bw; | |
450 | rate_control_rate_update(local, sband, sta, | |
451 | IEEE80211_RC_BW_CHANGED); | |
452 | } | |
64f68e5d | 453 | |
30eb1dc2 JB |
454 | ret = ieee80211_vif_change_bandwidth(sdata, &chandef, changed); |
455 | if (ret) { | |
456 | sdata_info(sdata, | |
457 | "AP %pM changed bandwidth to incompatible one - disconnect\n", | |
458 | ifmgd->bssid); | |
459 | return ret; | |
460 | } | |
7cc44ed4 | 461 | |
30eb1dc2 JB |
462 | if (new_sta_bw > sta->sta.bandwidth) { |
463 | sta->sta.bandwidth = new_sta_bw; | |
464 | rate_control_rate_update(local, sband, sta, | |
465 | IEEE80211_RC_BW_CHANGED); | |
0aaffa9b | 466 | } |
d5522e03 | 467 | |
30eb1dc2 | 468 | return 0; |
d5522e03 JB |
469 | } |
470 | ||
9c6bd790 JB |
471 | /* frame sending functions */ |
472 | ||
66e67e41 | 473 | static void ieee80211_add_ht_ie(struct ieee80211_sub_if_data *sdata, |
9dde6423 | 474 | struct sk_buff *skb, u8 ap_ht_param, |
66e67e41 JB |
475 | struct ieee80211_supported_band *sband, |
476 | struct ieee80211_channel *channel, | |
477 | enum ieee80211_smps_mode smps) | |
478 | { | |
66e67e41 JB |
479 | u8 *pos; |
480 | u32 flags = channel->flags; | |
481 | u16 cap; | |
482 | struct ieee80211_sta_ht_cap ht_cap; | |
483 | ||
484 | BUILD_BUG_ON(sizeof(ht_cap) != sizeof(sband->ht_cap)); | |
485 | ||
66e67e41 JB |
486 | memcpy(&ht_cap, &sband->ht_cap, sizeof(ht_cap)); |
487 | ieee80211_apply_htcap_overrides(sdata, &ht_cap); | |
488 | ||
66e67e41 JB |
489 | /* determine capability flags */ |
490 | cap = ht_cap.cap; | |
491 | ||
9dde6423 | 492 | switch (ap_ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) { |
66e67e41 JB |
493 | case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: |
494 | if (flags & IEEE80211_CHAN_NO_HT40PLUS) { | |
495 | cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; | |
496 | cap &= ~IEEE80211_HT_CAP_SGI_40; | |
497 | } | |
498 | break; | |
499 | case IEEE80211_HT_PARAM_CHA_SEC_BELOW: | |
500 | if (flags & IEEE80211_CHAN_NO_HT40MINUS) { | |
501 | cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; | |
502 | cap &= ~IEEE80211_HT_CAP_SGI_40; | |
503 | } | |
504 | break; | |
505 | } | |
506 | ||
24398e39 JB |
507 | /* |
508 | * If 40 MHz was disabled associate as though we weren't | |
509 | * capable of 40 MHz -- some broken APs will never fall | |
510 | * back to trying to transmit in 20 MHz. | |
511 | */ | |
512 | if (sdata->u.mgd.flags & IEEE80211_STA_DISABLE_40MHZ) { | |
513 | cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; | |
514 | cap &= ~IEEE80211_HT_CAP_SGI_40; | |
515 | } | |
516 | ||
66e67e41 JB |
517 | /* set SM PS mode properly */ |
518 | cap &= ~IEEE80211_HT_CAP_SM_PS; | |
519 | switch (smps) { | |
520 | case IEEE80211_SMPS_AUTOMATIC: | |
521 | case IEEE80211_SMPS_NUM_MODES: | |
522 | WARN_ON(1); | |
523 | case IEEE80211_SMPS_OFF: | |
524 | cap |= WLAN_HT_CAP_SM_PS_DISABLED << | |
525 | IEEE80211_HT_CAP_SM_PS_SHIFT; | |
526 | break; | |
527 | case IEEE80211_SMPS_STATIC: | |
528 | cap |= WLAN_HT_CAP_SM_PS_STATIC << | |
529 | IEEE80211_HT_CAP_SM_PS_SHIFT; | |
530 | break; | |
531 | case IEEE80211_SMPS_DYNAMIC: | |
532 | cap |= WLAN_HT_CAP_SM_PS_DYNAMIC << | |
533 | IEEE80211_HT_CAP_SM_PS_SHIFT; | |
534 | break; | |
535 | } | |
536 | ||
537 | /* reserve and fill IE */ | |
538 | pos = skb_put(skb, sizeof(struct ieee80211_ht_cap) + 2); | |
539 | ieee80211_ie_build_ht_cap(pos, &ht_cap, cap); | |
540 | } | |
541 | ||
322cd406 SS |
542 | /* This function determines vht capability flags for the association |
543 | * and builds the IE. | |
544 | * Note - the function may set the owner of the MU-MIMO capability | |
545 | */ | |
d545daba MP |
546 | static void ieee80211_add_vht_ie(struct ieee80211_sub_if_data *sdata, |
547 | struct sk_buff *skb, | |
b08fbbd8 JB |
548 | struct ieee80211_supported_band *sband, |
549 | struct ieee80211_vht_cap *ap_vht_cap) | |
d545daba | 550 | { |
322cd406 | 551 | struct ieee80211_local *local = sdata->local; |
d545daba MP |
552 | u8 *pos; |
553 | u32 cap; | |
554 | struct ieee80211_sta_vht_cap vht_cap; | |
c1cf6d4e | 555 | u32 mask, ap_bf_sts, our_bf_sts; |
d545daba MP |
556 | |
557 | BUILD_BUG_ON(sizeof(vht_cap) != sizeof(sband->vht_cap)); | |
558 | ||
559 | memcpy(&vht_cap, &sband->vht_cap, sizeof(vht_cap)); | |
dd5ecfea | 560 | ieee80211_apply_vhtcap_overrides(sdata, &vht_cap); |
d545daba MP |
561 | |
562 | /* determine capability flags */ | |
563 | cap = vht_cap.cap; | |
564 | ||
f2d9d270 | 565 | if (sdata->u.mgd.flags & IEEE80211_STA_DISABLE_80P80MHZ) { |
575f0530 JB |
566 | u32 bw = cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK; |
567 | ||
568 | cap &= ~IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK; | |
569 | if (bw == IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ || | |
570 | bw == IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ) | |
571 | cap |= IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ; | |
f2d9d270 JB |
572 | } |
573 | ||
574 | if (sdata->u.mgd.flags & IEEE80211_STA_DISABLE_160MHZ) { | |
575 | cap &= ~IEEE80211_VHT_CAP_SHORT_GI_160; | |
575f0530 | 576 | cap &= ~IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK; |
f2d9d270 JB |
577 | } |
578 | ||
b08fbbd8 JB |
579 | /* |
580 | * Some APs apparently get confused if our capabilities are better | |
581 | * than theirs, so restrict what we advertise in the assoc request. | |
582 | */ | |
583 | if (!(ap_vht_cap->vht_cap_info & | |
584 | cpu_to_le32(IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE))) | |
322cd406 SS |
585 | cap &= ~(IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE | |
586 | IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE); | |
587 | else if (!(ap_vht_cap->vht_cap_info & | |
588 | cpu_to_le32(IEEE80211_VHT_CAP_MU_BEAMFORMER_CAPABLE))) | |
589 | cap &= ~IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE; | |
590 | ||
591 | /* | |
592 | * If some other vif is using the MU-MIMO capablity we cannot associate | |
593 | * using MU-MIMO - this will lead to contradictions in the group-id | |
594 | * mechanism. | |
595 | * Ownership is defined since association request, in order to avoid | |
596 | * simultaneous associations with MU-MIMO. | |
597 | */ | |
598 | if (cap & IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE) { | |
599 | bool disable_mu_mimo = false; | |
600 | struct ieee80211_sub_if_data *other; | |
601 | ||
602 | list_for_each_entry_rcu(other, &local->interfaces, list) { | |
603 | if (other->flags & IEEE80211_SDATA_MU_MIMO_OWNER) { | |
604 | disable_mu_mimo = true; | |
605 | break; | |
606 | } | |
607 | } | |
608 | if (disable_mu_mimo) | |
609 | cap &= ~IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE; | |
610 | else | |
611 | sdata->flags |= IEEE80211_SDATA_MU_MIMO_OWNER; | |
612 | } | |
b08fbbd8 | 613 | |
c1cf6d4e ES |
614 | mask = IEEE80211_VHT_CAP_BEAMFORMEE_STS_MASK; |
615 | ||
616 | ap_bf_sts = le32_to_cpu(ap_vht_cap->vht_cap_info) & mask; | |
617 | our_bf_sts = cap & mask; | |
618 | ||
619 | if (ap_bf_sts < our_bf_sts) { | |
620 | cap &= ~mask; | |
621 | cap |= ap_bf_sts; | |
622 | } | |
623 | ||
d545daba | 624 | /* reserve and fill IE */ |
d4950281 | 625 | pos = skb_put(skb, sizeof(struct ieee80211_vht_cap) + 2); |
d545daba MP |
626 | ieee80211_ie_build_vht_cap(pos, &vht_cap, cap); |
627 | } | |
628 | ||
66e67e41 JB |
629 | static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata) |
630 | { | |
631 | struct ieee80211_local *local = sdata->local; | |
632 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
633 | struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data; | |
634 | struct sk_buff *skb; | |
635 | struct ieee80211_mgmt *mgmt; | |
636 | u8 *pos, qos_info; | |
637 | size_t offset = 0, noffset; | |
2103dec1 | 638 | int i, count, rates_len, supp_rates_len, shift; |
66e67e41 JB |
639 | u16 capab; |
640 | struct ieee80211_supported_band *sband; | |
55de908a JB |
641 | struct ieee80211_chanctx_conf *chanctx_conf; |
642 | struct ieee80211_channel *chan; | |
2103dec1 | 643 | u32 rate_flags, rates = 0; |
66e67e41 | 644 | |
8d61ffa5 | 645 | sdata_assert_lock(sdata); |
66e67e41 | 646 | |
55de908a JB |
647 | rcu_read_lock(); |
648 | chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); | |
649 | if (WARN_ON(!chanctx_conf)) { | |
650 | rcu_read_unlock(); | |
651 | return; | |
652 | } | |
4bf88530 | 653 | chan = chanctx_conf->def.chan; |
2103dec1 | 654 | rate_flags = ieee80211_chandef_rate_flags(&chanctx_conf->def); |
55de908a JB |
655 | rcu_read_unlock(); |
656 | sband = local->hw.wiphy->bands[chan->band]; | |
2103dec1 | 657 | shift = ieee80211_vif_get_shift(&sdata->vif); |
66e67e41 JB |
658 | |
659 | if (assoc_data->supp_rates_len) { | |
660 | /* | |
661 | * Get all rates supported by the device and the AP as | |
662 | * some APs don't like getting a superset of their rates | |
663 | * in the association request (e.g. D-Link DAP 1353 in | |
664 | * b-only mode)... | |
665 | */ | |
2103dec1 SW |
666 | rates_len = ieee80211_parse_bitrates(&chanctx_conf->def, sband, |
667 | assoc_data->supp_rates, | |
668 | assoc_data->supp_rates_len, | |
669 | &rates); | |
66e67e41 JB |
670 | } else { |
671 | /* | |
672 | * In case AP not provide any supported rates information | |
673 | * before association, we send information element(s) with | |
674 | * all rates that we support. | |
675 | */ | |
2103dec1 SW |
676 | rates_len = 0; |
677 | for (i = 0; i < sband->n_bitrates; i++) { | |
678 | if ((rate_flags & sband->bitrates[i].flags) | |
679 | != rate_flags) | |
680 | continue; | |
681 | rates |= BIT(i); | |
682 | rates_len++; | |
683 | } | |
66e67e41 JB |
684 | } |
685 | ||
686 | skb = alloc_skb(local->hw.extra_tx_headroom + | |
687 | sizeof(*mgmt) + /* bit too much but doesn't matter */ | |
688 | 2 + assoc_data->ssid_len + /* SSID */ | |
689 | 4 + rates_len + /* (extended) rates */ | |
690 | 4 + /* power capability */ | |
691 | 2 + 2 * sband->n_channels + /* supported channels */ | |
692 | 2 + sizeof(struct ieee80211_ht_cap) + /* HT */ | |
d4950281 | 693 | 2 + sizeof(struct ieee80211_vht_cap) + /* VHT */ |
66e67e41 JB |
694 | assoc_data->ie_len + /* extra IEs */ |
695 | 9, /* WMM */ | |
696 | GFP_KERNEL); | |
697 | if (!skb) | |
698 | return; | |
699 | ||
700 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
701 | ||
702 | capab = WLAN_CAPABILITY_ESS; | |
703 | ||
704 | if (sband->band == IEEE80211_BAND_2GHZ) { | |
ea1b2b45 JB |
705 | capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME; |
706 | capab |= WLAN_CAPABILITY_SHORT_PREAMBLE; | |
66e67e41 JB |
707 | } |
708 | ||
709 | if (assoc_data->capability & WLAN_CAPABILITY_PRIVACY) | |
710 | capab |= WLAN_CAPABILITY_PRIVACY; | |
711 | ||
712 | if ((assoc_data->capability & WLAN_CAPABILITY_SPECTRUM_MGMT) && | |
30686bf7 | 713 | ieee80211_hw_check(&local->hw, SPECTRUM_MGMT)) |
66e67e41 JB |
714 | capab |= WLAN_CAPABILITY_SPECTRUM_MGMT; |
715 | ||
cd2f5dd7 AK |
716 | if (ifmgd->flags & IEEE80211_STA_ENABLE_RRM) |
717 | capab |= WLAN_CAPABILITY_RADIO_MEASURE; | |
718 | ||
66e67e41 JB |
719 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); |
720 | memset(mgmt, 0, 24); | |
721 | memcpy(mgmt->da, assoc_data->bss->bssid, ETH_ALEN); | |
722 | memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); | |
723 | memcpy(mgmt->bssid, assoc_data->bss->bssid, ETH_ALEN); | |
724 | ||
725 | if (!is_zero_ether_addr(assoc_data->prev_bssid)) { | |
726 | skb_put(skb, 10); | |
727 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | | |
728 | IEEE80211_STYPE_REASSOC_REQ); | |
729 | mgmt->u.reassoc_req.capab_info = cpu_to_le16(capab); | |
730 | mgmt->u.reassoc_req.listen_interval = | |
731 | cpu_to_le16(local->hw.conf.listen_interval); | |
732 | memcpy(mgmt->u.reassoc_req.current_ap, assoc_data->prev_bssid, | |
733 | ETH_ALEN); | |
734 | } else { | |
735 | skb_put(skb, 4); | |
736 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | | |
737 | IEEE80211_STYPE_ASSOC_REQ); | |
738 | mgmt->u.assoc_req.capab_info = cpu_to_le16(capab); | |
739 | mgmt->u.assoc_req.listen_interval = | |
740 | cpu_to_le16(local->hw.conf.listen_interval); | |
741 | } | |
742 | ||
743 | /* SSID */ | |
744 | pos = skb_put(skb, 2 + assoc_data->ssid_len); | |
745 | *pos++ = WLAN_EID_SSID; | |
746 | *pos++ = assoc_data->ssid_len; | |
747 | memcpy(pos, assoc_data->ssid, assoc_data->ssid_len); | |
748 | ||
749 | /* add all rates which were marked to be used above */ | |
750 | supp_rates_len = rates_len; | |
751 | if (supp_rates_len > 8) | |
752 | supp_rates_len = 8; | |
753 | ||
754 | pos = skb_put(skb, supp_rates_len + 2); | |
755 | *pos++ = WLAN_EID_SUPP_RATES; | |
756 | *pos++ = supp_rates_len; | |
757 | ||
758 | count = 0; | |
759 | for (i = 0; i < sband->n_bitrates; i++) { | |
760 | if (BIT(i) & rates) { | |
2103dec1 SW |
761 | int rate = DIV_ROUND_UP(sband->bitrates[i].bitrate, |
762 | 5 * (1 << shift)); | |
763 | *pos++ = (u8) rate; | |
66e67e41 JB |
764 | if (++count == 8) |
765 | break; | |
766 | } | |
767 | } | |
768 | ||
769 | if (rates_len > count) { | |
770 | pos = skb_put(skb, rates_len - count + 2); | |
771 | *pos++ = WLAN_EID_EXT_SUPP_RATES; | |
772 | *pos++ = rates_len - count; | |
773 | ||
774 | for (i++; i < sband->n_bitrates; i++) { | |
775 | if (BIT(i) & rates) { | |
2103dec1 SW |
776 | int rate; |
777 | rate = DIV_ROUND_UP(sband->bitrates[i].bitrate, | |
778 | 5 * (1 << shift)); | |
779 | *pos++ = (u8) rate; | |
66e67e41 JB |
780 | } |
781 | } | |
782 | } | |
783 | ||
cd2f5dd7 AK |
784 | if (capab & WLAN_CAPABILITY_SPECTRUM_MGMT || |
785 | capab & WLAN_CAPABILITY_RADIO_MEASURE) { | |
66e67e41 JB |
786 | pos = skb_put(skb, 4); |
787 | *pos++ = WLAN_EID_PWR_CAPABILITY; | |
788 | *pos++ = 2; | |
789 | *pos++ = 0; /* min tx power */ | |
0430c883 SW |
790 | /* max tx power */ |
791 | *pos++ = ieee80211_chandef_max_power(&chanctx_conf->def); | |
cd2f5dd7 | 792 | } |
66e67e41 | 793 | |
cd2f5dd7 | 794 | if (capab & WLAN_CAPABILITY_SPECTRUM_MGMT) { |
66e67e41 JB |
795 | /* TODO: get this in reg domain format */ |
796 | pos = skb_put(skb, 2 * sband->n_channels + 2); | |
797 | *pos++ = WLAN_EID_SUPPORTED_CHANNELS; | |
798 | *pos++ = 2 * sband->n_channels; | |
799 | for (i = 0; i < sband->n_channels; i++) { | |
800 | *pos++ = ieee80211_frequency_to_channel( | |
801 | sband->channels[i].center_freq); | |
802 | *pos++ = 1; /* one channel in the subband*/ | |
803 | } | |
804 | } | |
805 | ||
806 | /* if present, add any custom IEs that go before HT */ | |
b3f51e94 | 807 | if (assoc_data->ie_len) { |
66e67e41 JB |
808 | static const u8 before_ht[] = { |
809 | WLAN_EID_SSID, | |
810 | WLAN_EID_SUPP_RATES, | |
811 | WLAN_EID_EXT_SUPP_RATES, | |
812 | WLAN_EID_PWR_CAPABILITY, | |
813 | WLAN_EID_SUPPORTED_CHANNELS, | |
814 | WLAN_EID_RSN, | |
815 | WLAN_EID_QOS_CAPA, | |
816 | WLAN_EID_RRM_ENABLED_CAPABILITIES, | |
817 | WLAN_EID_MOBILITY_DOMAIN, | |
8ed28747 JB |
818 | WLAN_EID_FAST_BSS_TRANSITION, /* reassoc only */ |
819 | WLAN_EID_RIC_DATA, /* reassoc only */ | |
66e67e41 JB |
820 | WLAN_EID_SUPPORTED_REGULATORY_CLASSES, |
821 | }; | |
8ed28747 JB |
822 | static const u8 after_ric[] = { |
823 | WLAN_EID_SUPPORTED_REGULATORY_CLASSES, | |
824 | WLAN_EID_HT_CAPABILITY, | |
825 | WLAN_EID_BSS_COEX_2040, | |
826 | WLAN_EID_EXT_CAPABILITY, | |
827 | WLAN_EID_QOS_TRAFFIC_CAPA, | |
828 | WLAN_EID_TIM_BCAST_REQ, | |
829 | WLAN_EID_INTERWORKING, | |
830 | /* 60GHz doesn't happen right now */ | |
831 | WLAN_EID_VHT_CAPABILITY, | |
832 | WLAN_EID_OPMODE_NOTIF, | |
833 | }; | |
834 | ||
835 | noffset = ieee80211_ie_split_ric(assoc_data->ie, | |
836 | assoc_data->ie_len, | |
837 | before_ht, | |
838 | ARRAY_SIZE(before_ht), | |
839 | after_ric, | |
840 | ARRAY_SIZE(after_ric), | |
841 | offset); | |
66e67e41 JB |
842 | pos = skb_put(skb, noffset - offset); |
843 | memcpy(pos, assoc_data->ie + offset, noffset - offset); | |
844 | offset = noffset; | |
845 | } | |
846 | ||
f2d9d270 JB |
847 | if (WARN_ON_ONCE((ifmgd->flags & IEEE80211_STA_DISABLE_HT) && |
848 | !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))) | |
849 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; | |
850 | ||
a8243b72 | 851 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) |
9dde6423 | 852 | ieee80211_add_ht_ie(sdata, skb, assoc_data->ap_ht_param, |
04ecd257 | 853 | sband, chan, sdata->smps_mode); |
66e67e41 | 854 | |
3de3802c JB |
855 | /* if present, add any custom IEs that go before VHT */ |
856 | if (assoc_data->ie_len) { | |
857 | static const u8 before_vht[] = { | |
858 | WLAN_EID_SSID, | |
859 | WLAN_EID_SUPP_RATES, | |
860 | WLAN_EID_EXT_SUPP_RATES, | |
861 | WLAN_EID_PWR_CAPABILITY, | |
862 | WLAN_EID_SUPPORTED_CHANNELS, | |
863 | WLAN_EID_RSN, | |
864 | WLAN_EID_QOS_CAPA, | |
865 | WLAN_EID_RRM_ENABLED_CAPABILITIES, | |
866 | WLAN_EID_MOBILITY_DOMAIN, | |
867 | WLAN_EID_SUPPORTED_REGULATORY_CLASSES, | |
868 | WLAN_EID_HT_CAPABILITY, | |
869 | WLAN_EID_BSS_COEX_2040, | |
870 | WLAN_EID_EXT_CAPABILITY, | |
871 | WLAN_EID_QOS_TRAFFIC_CAPA, | |
872 | WLAN_EID_TIM_BCAST_REQ, | |
873 | WLAN_EID_INTERWORKING, | |
874 | }; | |
8ed28747 JB |
875 | |
876 | /* RIC already taken above, so no need to handle here anymore */ | |
3de3802c JB |
877 | noffset = ieee80211_ie_split(assoc_data->ie, assoc_data->ie_len, |
878 | before_vht, ARRAY_SIZE(before_vht), | |
879 | offset); | |
880 | pos = skb_put(skb, noffset - offset); | |
881 | memcpy(pos, assoc_data->ie + offset, noffset - offset); | |
882 | offset = noffset; | |
883 | } | |
884 | ||
d545daba | 885 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) |
b08fbbd8 JB |
886 | ieee80211_add_vht_ie(sdata, skb, sband, |
887 | &assoc_data->ap_vht_cap); | |
d545daba | 888 | |
66e67e41 | 889 | /* if present, add any custom non-vendor IEs that go after HT */ |
b3f51e94 | 890 | if (assoc_data->ie_len) { |
66e67e41 JB |
891 | noffset = ieee80211_ie_split_vendor(assoc_data->ie, |
892 | assoc_data->ie_len, | |
893 | offset); | |
894 | pos = skb_put(skb, noffset - offset); | |
895 | memcpy(pos, assoc_data->ie + offset, noffset - offset); | |
896 | offset = noffset; | |
897 | } | |
898 | ||
76f0303d JB |
899 | if (assoc_data->wmm) { |
900 | if (assoc_data->uapsd) { | |
dc41e4d4 EP |
901 | qos_info = ifmgd->uapsd_queues; |
902 | qos_info |= (ifmgd->uapsd_max_sp_len << | |
66e67e41 JB |
903 | IEEE80211_WMM_IE_STA_QOSINFO_SP_SHIFT); |
904 | } else { | |
905 | qos_info = 0; | |
906 | } | |
907 | ||
40b861a0 | 908 | pos = ieee80211_add_wmm_info_ie(skb_put(skb, 9), qos_info); |
66e67e41 JB |
909 | } |
910 | ||
911 | /* add any remaining custom (i.e. vendor specific here) IEs */ | |
b3f51e94 | 912 | if (assoc_data->ie_len) { |
66e67e41 JB |
913 | noffset = assoc_data->ie_len; |
914 | pos = skb_put(skb, noffset - offset); | |
915 | memcpy(pos, assoc_data->ie + offset, noffset - offset); | |
916 | } | |
917 | ||
a1845fc7 JB |
918 | drv_mgd_prepare_tx(local, sdata); |
919 | ||
66e67e41 | 920 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; |
30686bf7 | 921 | if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) |
1672c0e3 JB |
922 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS | |
923 | IEEE80211_TX_INTFL_MLME_CONN_TX; | |
66e67e41 JB |
924 | ieee80211_tx_skb(sdata, skb); |
925 | } | |
926 | ||
572e0012 KV |
927 | void ieee80211_send_pspoll(struct ieee80211_local *local, |
928 | struct ieee80211_sub_if_data *sdata) | |
929 | { | |
572e0012 KV |
930 | struct ieee80211_pspoll *pspoll; |
931 | struct sk_buff *skb; | |
572e0012 | 932 | |
d8cd189e KV |
933 | skb = ieee80211_pspoll_get(&local->hw, &sdata->vif); |
934 | if (!skb) | |
572e0012 | 935 | return; |
572e0012 | 936 | |
d8cd189e KV |
937 | pspoll = (struct ieee80211_pspoll *) skb->data; |
938 | pspoll->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM); | |
572e0012 | 939 | |
62ae67be JB |
940 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; |
941 | ieee80211_tx_skb(sdata, skb); | |
572e0012 KV |
942 | } |
943 | ||
965bedad JB |
944 | void ieee80211_send_nullfunc(struct ieee80211_local *local, |
945 | struct ieee80211_sub_if_data *sdata, | |
946 | int powersave) | |
947 | { | |
948 | struct sk_buff *skb; | |
d8cd189e | 949 | struct ieee80211_hdr_3addr *nullfunc; |
b6f35301 | 950 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
965bedad | 951 | |
d8cd189e KV |
952 | skb = ieee80211_nullfunc_get(&local->hw, &sdata->vif); |
953 | if (!skb) | |
965bedad | 954 | return; |
965bedad | 955 | |
d8cd189e | 956 | nullfunc = (struct ieee80211_hdr_3addr *) skb->data; |
965bedad | 957 | if (powersave) |
d8cd189e | 958 | nullfunc->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM); |
965bedad | 959 | |
6c17b77b SF |
960 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT | |
961 | IEEE80211_TX_INTFL_OFFCHAN_TX_OK; | |
ff40b425 | 962 | |
30686bf7 | 963 | if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) |
ff40b425 PF |
964 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS; |
965 | ||
392b9ffb | 966 | if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL) |
b6f35301 RM |
967 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_USE_MINRATE; |
968 | ||
62ae67be | 969 | ieee80211_tx_skb(sdata, skb); |
965bedad JB |
970 | } |
971 | ||
d524215f FF |
972 | static void ieee80211_send_4addr_nullfunc(struct ieee80211_local *local, |
973 | struct ieee80211_sub_if_data *sdata) | |
974 | { | |
975 | struct sk_buff *skb; | |
976 | struct ieee80211_hdr *nullfunc; | |
977 | __le16 fc; | |
978 | ||
979 | if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION)) | |
980 | return; | |
981 | ||
982 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + 30); | |
d15b8459 | 983 | if (!skb) |
d524215f | 984 | return; |
d15b8459 | 985 | |
d524215f FF |
986 | skb_reserve(skb, local->hw.extra_tx_headroom); |
987 | ||
988 | nullfunc = (struct ieee80211_hdr *) skb_put(skb, 30); | |
989 | memset(nullfunc, 0, 30); | |
990 | fc = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC | | |
991 | IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS); | |
992 | nullfunc->frame_control = fc; | |
993 | memcpy(nullfunc->addr1, sdata->u.mgd.bssid, ETH_ALEN); | |
994 | memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN); | |
995 | memcpy(nullfunc->addr3, sdata->u.mgd.bssid, ETH_ALEN); | |
996 | memcpy(nullfunc->addr4, sdata->vif.addr, ETH_ALEN); | |
997 | ||
998 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; | |
999 | ieee80211_tx_skb(sdata, skb); | |
1000 | } | |
1001 | ||
cc32abd4 JB |
1002 | /* spectrum management related things */ |
1003 | static void ieee80211_chswitch_work(struct work_struct *work) | |
1004 | { | |
1005 | struct ieee80211_sub_if_data *sdata = | |
1006 | container_of(work, struct ieee80211_sub_if_data, u.mgd.chswitch_work); | |
675a0b04 | 1007 | struct ieee80211_local *local = sdata->local; |
cc32abd4 | 1008 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
7578d575 | 1009 | int ret; |
cc32abd4 | 1010 | |
9607e6b6 | 1011 | if (!ieee80211_sdata_running(sdata)) |
cc32abd4 JB |
1012 | return; |
1013 | ||
8d61ffa5 | 1014 | sdata_lock(sdata); |
4c3ebc56 MK |
1015 | mutex_lock(&local->mtx); |
1016 | mutex_lock(&local->chanctx_mtx); | |
1017 | ||
77fdaa12 JB |
1018 | if (!ifmgd->associated) |
1019 | goto out; | |
cc32abd4 | 1020 | |
4c3ebc56 MK |
1021 | if (!sdata->vif.csa_active) |
1022 | goto out; | |
1023 | ||
1024 | /* | |
1025 | * using reservation isn't immediate as it may be deferred until later | |
1026 | * with multi-vif. once reservation is complete it will re-schedule the | |
1027 | * work with no reserved_chanctx so verify chandef to check if it | |
1028 | * completed successfully | |
1029 | */ | |
1030 | ||
1031 | if (sdata->reserved_chanctx) { | |
1032 | /* | |
1033 | * with multi-vif csa driver may call ieee80211_csa_finish() | |
1034 | * many times while waiting for other interfaces to use their | |
1035 | * reservations | |
1036 | */ | |
1037 | if (sdata->reserved_ready) | |
1038 | goto out; | |
1039 | ||
1040 | ret = ieee80211_vif_use_reserved_context(sdata); | |
1041 | if (ret) { | |
1042 | sdata_info(sdata, | |
1043 | "failed to use reserved channel context, disconnecting (err=%d)\n", | |
1044 | ret); | |
1045 | ieee80211_queue_work(&sdata->local->hw, | |
1046 | &ifmgd->csa_connection_drop_work); | |
1047 | goto out; | |
1048 | } | |
1049 | ||
1050 | goto out; | |
1051 | } | |
1052 | ||
1053 | if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef, | |
1054 | &sdata->csa_chandef)) { | |
7578d575 | 1055 | sdata_info(sdata, |
4c3ebc56 | 1056 | "failed to finalize channel switch, disconnecting\n"); |
7578d575 AN |
1057 | ieee80211_queue_work(&sdata->local->hw, |
1058 | &ifmgd->csa_connection_drop_work); | |
1059 | goto out; | |
1060 | } | |
675a0b04 | 1061 | |
cc32abd4 | 1062 | /* XXX: shouldn't really modify cfg80211-owned data! */ |
33787fc4 | 1063 | ifmgd->associated->channel = sdata->csa_chandef.chan; |
cc32abd4 | 1064 | |
0c21e632 LC |
1065 | ifmgd->csa_waiting_bcn = true; |
1066 | ||
1067 | ieee80211_sta_reset_beacon_monitor(sdata); | |
1068 | ieee80211_sta_reset_conn_monitor(sdata); | |
1069 | ||
1070 | out: | |
1071 | mutex_unlock(&local->chanctx_mtx); | |
1072 | mutex_unlock(&local->mtx); | |
1073 | sdata_unlock(sdata); | |
1074 | } | |
1075 | ||
1076 | static void ieee80211_chswitch_post_beacon(struct ieee80211_sub_if_data *sdata) | |
1077 | { | |
1078 | struct ieee80211_local *local = sdata->local; | |
1079 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
1080 | int ret; | |
1081 | ||
1082 | sdata_assert_lock(sdata); | |
1083 | ||
1084 | WARN_ON(!sdata->vif.csa_active); | |
4c3ebc56 | 1085 | |
a46992b4 LC |
1086 | if (sdata->csa_block_tx) { |
1087 | ieee80211_wake_vif_queues(local, sdata, | |
1088 | IEEE80211_QUEUE_STOP_REASON_CSA); | |
1089 | sdata->csa_block_tx = false; | |
1090 | } | |
7578d575 | 1091 | |
0c21e632 LC |
1092 | sdata->vif.csa_active = false; |
1093 | ifmgd->csa_waiting_bcn = false; | |
1094 | ||
f1d65583 LC |
1095 | ret = drv_post_channel_switch(sdata); |
1096 | if (ret) { | |
1097 | sdata_info(sdata, | |
1098 | "driver post channel switch failed, disconnecting\n"); | |
1099 | ieee80211_queue_work(&local->hw, | |
1100 | &ifmgd->csa_connection_drop_work); | |
0c21e632 | 1101 | return; |
f1d65583 | 1102 | } |
688b1ecf LC |
1103 | |
1104 | cfg80211_ch_switch_notify(sdata->dev, &sdata->reserved_chandef); | |
cc32abd4 JB |
1105 | } |
1106 | ||
5ce6e438 JB |
1107 | void ieee80211_chswitch_done(struct ieee80211_vif *vif, bool success) |
1108 | { | |
55de908a JB |
1109 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); |
1110 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
5ce6e438 JB |
1111 | |
1112 | trace_api_chswitch_done(sdata, success); | |
1113 | if (!success) { | |
882a7c69 JB |
1114 | sdata_info(sdata, |
1115 | "driver channel switch failed, disconnecting\n"); | |
1116 | ieee80211_queue_work(&sdata->local->hw, | |
1117 | &ifmgd->csa_connection_drop_work); | |
1118 | } else { | |
1119 | ieee80211_queue_work(&sdata->local->hw, &ifmgd->chswitch_work); | |
5ce6e438 | 1120 | } |
5ce6e438 JB |
1121 | } |
1122 | EXPORT_SYMBOL(ieee80211_chswitch_done); | |
1123 | ||
cc32abd4 JB |
1124 | static void ieee80211_chswitch_timer(unsigned long data) |
1125 | { | |
1126 | struct ieee80211_sub_if_data *sdata = | |
1127 | (struct ieee80211_sub_if_data *) data; | |
5bb644a0 | 1128 | |
9b7d72c1 | 1129 | ieee80211_queue_work(&sdata->local->hw, &sdata->u.mgd.chswitch_work); |
cc32abd4 JB |
1130 | } |
1131 | ||
37799e52 | 1132 | static void |
4a3cb702 | 1133 | ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata, |
2ba45384 LC |
1134 | u64 timestamp, u32 device_timestamp, |
1135 | struct ieee802_11_elems *elems, | |
04a161f4 | 1136 | bool beacon) |
cc32abd4 | 1137 | { |
b4f286a1 | 1138 | struct ieee80211_local *local = sdata->local; |
cc32abd4 | 1139 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
37799e52 | 1140 | struct cfg80211_bss *cbss = ifmgd->associated; |
4c3ebc56 | 1141 | struct ieee80211_chanctx_conf *conf; |
55de908a | 1142 | struct ieee80211_chanctx *chanctx; |
e6b7cde4 | 1143 | enum ieee80211_band current_band; |
c0f17eb9 | 1144 | struct ieee80211_csa_ie csa_ie; |
6d027bcc | 1145 | struct ieee80211_channel_switch ch_switch; |
e6b7cde4 | 1146 | int res; |
cc32abd4 | 1147 | |
8d61ffa5 | 1148 | sdata_assert_lock(sdata); |
77fdaa12 | 1149 | |
37799e52 | 1150 | if (!cbss) |
cc32abd4 JB |
1151 | return; |
1152 | ||
b4f286a1 | 1153 | if (local->scanning) |
cc32abd4 JB |
1154 | return; |
1155 | ||
37799e52 | 1156 | /* disregard subsequent announcements if we are already processing */ |
3e2a0226 | 1157 | if (sdata->vif.csa_active) |
cc32abd4 JB |
1158 | return; |
1159 | ||
e6b7cde4 | 1160 | current_band = cbss->channel->band; |
c0f17eb9 | 1161 | memset(&csa_ie, 0, sizeof(csa_ie)); |
84469a45 | 1162 | res = ieee80211_parse_ch_switch_ie(sdata, elems, current_band, |
e6b7cde4 | 1163 | ifmgd->flags, |
c0f17eb9 | 1164 | ifmgd->associated->bssid, &csa_ie); |
e6b7cde4 | 1165 | if (res < 0) |
b4f286a1 | 1166 | ieee80211_queue_work(&local->hw, |
882a7c69 | 1167 | &ifmgd->csa_connection_drop_work); |
e6b7cde4 | 1168 | if (res) |
cc32abd4 | 1169 | return; |
cd64f2a9 | 1170 | |
c0f17eb9 | 1171 | if (!cfg80211_chandef_usable(local->hw.wiphy, &csa_ie.chandef, |
85220d71 JB |
1172 | IEEE80211_CHAN_DISABLED)) { |
1173 | sdata_info(sdata, | |
1174 | "AP %pM switches to unsupported channel (%d MHz, width:%d, CF1/2: %d/%d MHz), disconnecting\n", | |
e6b7cde4 | 1175 | ifmgd->associated->bssid, |
c0f17eb9 CYY |
1176 | csa_ie.chandef.chan->center_freq, |
1177 | csa_ie.chandef.width, csa_ie.chandef.center_freq1, | |
1178 | csa_ie.chandef.center_freq2); | |
85220d71 JB |
1179 | ieee80211_queue_work(&local->hw, |
1180 | &ifmgd->csa_connection_drop_work); | |
1181 | return; | |
1182 | } | |
1183 | ||
f84eaa10 JB |
1184 | if (cfg80211_chandef_identical(&csa_ie.chandef, |
1185 | &sdata->vif.bss_conf.chandef)) { | |
1186 | if (ifmgd->csa_ignored_same_chan) | |
1187 | return; | |
1188 | sdata_info(sdata, | |
1189 | "AP %pM tries to chanswitch to same channel, ignore\n", | |
1190 | ifmgd->associated->bssid); | |
1191 | ifmgd->csa_ignored_same_chan = true; | |
1192 | return; | |
1193 | } | |
1194 | ||
c5a71688 AN |
1195 | /* |
1196 | * Drop all TDLS peers - either we disconnect or move to a different | |
1197 | * channel from this point on. There's no telling what our peer will do. | |
1198 | * The TDLS WIDER_BW scenario is also problematic, as peers might now | |
1199 | * have an incompatible wider chandef. | |
1200 | */ | |
1201 | ieee80211_teardown_tdls_peers(sdata); | |
1202 | ||
4c3ebc56 | 1203 | mutex_lock(&local->mtx); |
7578d575 | 1204 | mutex_lock(&local->chanctx_mtx); |
4c3ebc56 MK |
1205 | conf = rcu_dereference_protected(sdata->vif.chanctx_conf, |
1206 | lockdep_is_held(&local->chanctx_mtx)); | |
1207 | if (!conf) { | |
1208 | sdata_info(sdata, | |
1209 | "no channel context assigned to vif?, disconnecting\n"); | |
f3b0bbb3 | 1210 | goto drop_connection; |
4c3ebc56 MK |
1211 | } |
1212 | ||
1213 | chanctx = container_of(conf, struct ieee80211_chanctx, conf); | |
1214 | ||
0f791eb4 | 1215 | if (local->use_chanctx && |
30686bf7 | 1216 | !ieee80211_hw_check(&local->hw, CHANCTX_STA_CSA)) { |
0f791eb4 LC |
1217 | sdata_info(sdata, |
1218 | "driver doesn't support chan-switch with channel contexts\n"); | |
f3b0bbb3 | 1219 | goto drop_connection; |
55de908a JB |
1220 | } |
1221 | ||
6d027bcc LC |
1222 | ch_switch.timestamp = timestamp; |
1223 | ch_switch.device_timestamp = device_timestamp; | |
1224 | ch_switch.block_tx = csa_ie.mode; | |
1225 | ch_switch.chandef = csa_ie.chandef; | |
1226 | ch_switch.count = csa_ie.count; | |
1227 | ||
1228 | if (drv_pre_channel_switch(sdata, &ch_switch)) { | |
1229 | sdata_info(sdata, | |
1230 | "preparing for channel switch failed, disconnecting\n"); | |
f3b0bbb3 | 1231 | goto drop_connection; |
6d027bcc LC |
1232 | } |
1233 | ||
4c3ebc56 MK |
1234 | res = ieee80211_vif_reserve_chanctx(sdata, &csa_ie.chandef, |
1235 | chanctx->mode, false); | |
1236 | if (res) { | |
55de908a | 1237 | sdata_info(sdata, |
4c3ebc56 MK |
1238 | "failed to reserve channel context for channel switch, disconnecting (err=%d)\n", |
1239 | res); | |
f3b0bbb3 | 1240 | goto drop_connection; |
55de908a | 1241 | } |
b4f286a1 | 1242 | mutex_unlock(&local->chanctx_mtx); |
55de908a | 1243 | |
c46a73f3 | 1244 | sdata->vif.csa_active = true; |
4c3ebc56 | 1245 | sdata->csa_chandef = csa_ie.chandef; |
59af6928 | 1246 | sdata->csa_block_tx = csa_ie.mode; |
f84eaa10 | 1247 | ifmgd->csa_ignored_same_chan = false; |
55de908a | 1248 | |
59af6928 | 1249 | if (sdata->csa_block_tx) |
a46992b4 LC |
1250 | ieee80211_stop_vif_queues(local, sdata, |
1251 | IEEE80211_QUEUE_STOP_REASON_CSA); | |
59af6928 | 1252 | mutex_unlock(&local->mtx); |
57eebdf3 | 1253 | |
2f457293 LC |
1254 | cfg80211_ch_switch_started_notify(sdata->dev, &csa_ie.chandef, |
1255 | csa_ie.count); | |
1256 | ||
b4f286a1 | 1257 | if (local->ops->channel_switch) { |
5ce6e438 | 1258 | /* use driver's channel switch callback */ |
0f791eb4 | 1259 | drv_channel_switch(local, sdata, &ch_switch); |
5ce6e438 JB |
1260 | return; |
1261 | } | |
1262 | ||
1263 | /* channel switch handled in software */ | |
c0f17eb9 | 1264 | if (csa_ie.count <= 1) |
b4f286a1 | 1265 | ieee80211_queue_work(&local->hw, &ifmgd->chswitch_work); |
57eebdf3 | 1266 | else |
cc32abd4 | 1267 | mod_timer(&ifmgd->chswitch_timer, |
ff1e417c LC |
1268 | TU_TO_EXP_TIME((csa_ie.count - 1) * |
1269 | cbss->beacon_interval)); | |
f3b0bbb3 JB |
1270 | return; |
1271 | drop_connection: | |
1272 | ieee80211_queue_work(&local->hw, &ifmgd->csa_connection_drop_work); | |
1273 | mutex_unlock(&local->chanctx_mtx); | |
1274 | mutex_unlock(&local->mtx); | |
cc32abd4 JB |
1275 | } |
1276 | ||
24a4e400 SG |
1277 | static bool |
1278 | ieee80211_find_80211h_pwr_constr(struct ieee80211_sub_if_data *sdata, | |
1279 | struct ieee80211_channel *channel, | |
1280 | const u8 *country_ie, u8 country_ie_len, | |
1281 | const u8 *pwr_constr_elem, | |
1282 | int *chan_pwr, int *pwr_reduction) | |
cc32abd4 | 1283 | { |
04b7b2ff JB |
1284 | struct ieee80211_country_ie_triplet *triplet; |
1285 | int chan = ieee80211_frequency_to_channel(channel->center_freq); | |
24a4e400 | 1286 | int i, chan_increment; |
04b7b2ff | 1287 | bool have_chan_pwr = false; |
cc32abd4 | 1288 | |
04b7b2ff JB |
1289 | /* Invalid IE */ |
1290 | if (country_ie_len % 2 || country_ie_len < IEEE80211_COUNTRY_IE_MIN_LEN) | |
24a4e400 | 1291 | return false; |
cc32abd4 | 1292 | |
04b7b2ff JB |
1293 | triplet = (void *)(country_ie + 3); |
1294 | country_ie_len -= 3; | |
1295 | ||
1296 | switch (channel->band) { | |
1297 | default: | |
1298 | WARN_ON_ONCE(1); | |
1299 | /* fall through */ | |
1300 | case IEEE80211_BAND_2GHZ: | |
1301 | case IEEE80211_BAND_60GHZ: | |
1302 | chan_increment = 1; | |
1303 | break; | |
1304 | case IEEE80211_BAND_5GHZ: | |
1305 | chan_increment = 4; | |
1306 | break; | |
cc32abd4 | 1307 | } |
04b7b2ff JB |
1308 | |
1309 | /* find channel */ | |
1310 | while (country_ie_len >= 3) { | |
1311 | u8 first_channel = triplet->chans.first_channel; | |
1312 | ||
1313 | if (first_channel >= IEEE80211_COUNTRY_EXTENSION_ID) | |
1314 | goto next; | |
1315 | ||
1316 | for (i = 0; i < triplet->chans.num_channels; i++) { | |
1317 | if (first_channel + i * chan_increment == chan) { | |
1318 | have_chan_pwr = true; | |
24a4e400 | 1319 | *chan_pwr = triplet->chans.max_power; |
04b7b2ff JB |
1320 | break; |
1321 | } | |
1322 | } | |
1323 | if (have_chan_pwr) | |
1324 | break; | |
1325 | ||
1326 | next: | |
1327 | triplet++; | |
1328 | country_ie_len -= 3; | |
1329 | } | |
1330 | ||
a5fee9cb | 1331 | if (have_chan_pwr && pwr_constr_elem) |
24a4e400 | 1332 | *pwr_reduction = *pwr_constr_elem; |
a5fee9cb MB |
1333 | else |
1334 | *pwr_reduction = 0; | |
1335 | ||
24a4e400 SG |
1336 | return have_chan_pwr; |
1337 | } | |
1338 | ||
c8d65917 SG |
1339 | static void ieee80211_find_cisco_dtpc(struct ieee80211_sub_if_data *sdata, |
1340 | struct ieee80211_channel *channel, | |
1341 | const u8 *cisco_dtpc_ie, | |
1342 | int *pwr_level) | |
1343 | { | |
1344 | /* From practical testing, the first data byte of the DTPC element | |
1345 | * seems to contain the requested dBm level, and the CLI on Cisco | |
1346 | * APs clearly state the range is -127 to 127 dBm, which indicates | |
1347 | * a signed byte, although it seemingly never actually goes negative. | |
1348 | * The other byte seems to always be zero. | |
1349 | */ | |
1350 | *pwr_level = (__s8)cisco_dtpc_ie[4]; | |
1351 | } | |
1352 | ||
24a4e400 SG |
1353 | static u32 ieee80211_handle_pwr_constr(struct ieee80211_sub_if_data *sdata, |
1354 | struct ieee80211_channel *channel, | |
1355 | struct ieee80211_mgmt *mgmt, | |
1356 | const u8 *country_ie, u8 country_ie_len, | |
c8d65917 SG |
1357 | const u8 *pwr_constr_ie, |
1358 | const u8 *cisco_dtpc_ie) | |
24a4e400 | 1359 | { |
c8d65917 SG |
1360 | bool has_80211h_pwr = false, has_cisco_pwr = false; |
1361 | int chan_pwr = 0, pwr_reduction_80211h = 0; | |
1362 | int pwr_level_cisco, pwr_level_80211h; | |
24a4e400 | 1363 | int new_ap_level; |
a5fee9cb | 1364 | __le16 capab = mgmt->u.probe_resp.capab_info; |
04b7b2ff | 1365 | |
a5fee9cb MB |
1366 | if (country_ie && |
1367 | (capab & cpu_to_le16(WLAN_CAPABILITY_SPECTRUM_MGMT) || | |
1368 | capab & cpu_to_le16(WLAN_CAPABILITY_RADIO_MEASURE))) { | |
24a4e400 SG |
1369 | has_80211h_pwr = ieee80211_find_80211h_pwr_constr( |
1370 | sdata, channel, country_ie, country_ie_len, | |
1371 | pwr_constr_ie, &chan_pwr, &pwr_reduction_80211h); | |
c8d65917 SG |
1372 | pwr_level_80211h = |
1373 | max_t(int, 0, chan_pwr - pwr_reduction_80211h); | |
1374 | } | |
1375 | ||
1376 | if (cisco_dtpc_ie) { | |
1377 | ieee80211_find_cisco_dtpc( | |
1378 | sdata, channel, cisco_dtpc_ie, &pwr_level_cisco); | |
1379 | has_cisco_pwr = true; | |
24a4e400 | 1380 | } |
04b7b2ff | 1381 | |
c8d65917 | 1382 | if (!has_80211h_pwr && !has_cisco_pwr) |
1ea6f9c0 | 1383 | return 0; |
04b7b2ff | 1384 | |
c8d65917 SG |
1385 | /* If we have both 802.11h and Cisco DTPC, apply both limits |
1386 | * by picking the smallest of the two power levels advertised. | |
1387 | */ | |
1388 | if (has_80211h_pwr && | |
1389 | (!has_cisco_pwr || pwr_level_80211h <= pwr_level_cisco)) { | |
cef2fc1c JL |
1390 | sdata_dbg(sdata, |
1391 | "Limiting TX power to %d (%d - %d) dBm as advertised by %pM\n", | |
1392 | pwr_level_80211h, chan_pwr, pwr_reduction_80211h, | |
1393 | sdata->u.mgd.bssid); | |
c8d65917 SG |
1394 | new_ap_level = pwr_level_80211h; |
1395 | } else { /* has_cisco_pwr is always true here. */ | |
cef2fc1c JL |
1396 | sdata_dbg(sdata, |
1397 | "Limiting TX power to %d dBm as advertised by %pM\n", | |
1398 | pwr_level_cisco, sdata->u.mgd.bssid); | |
c8d65917 SG |
1399 | new_ap_level = pwr_level_cisco; |
1400 | } | |
04b7b2ff | 1401 | |
1ea6f9c0 JB |
1402 | if (sdata->ap_power_level == new_ap_level) |
1403 | return 0; | |
04b7b2ff | 1404 | |
1ea6f9c0 JB |
1405 | sdata->ap_power_level = new_ap_level; |
1406 | if (__ieee80211_recalc_txpower(sdata)) | |
1407 | return BSS_CHANGED_TXPOWER; | |
1408 | return 0; | |
cc32abd4 JB |
1409 | } |
1410 | ||
965bedad JB |
1411 | /* powersave */ |
1412 | static void ieee80211_enable_ps(struct ieee80211_local *local, | |
1413 | struct ieee80211_sub_if_data *sdata) | |
1414 | { | |
1415 | struct ieee80211_conf *conf = &local->hw.conf; | |
1416 | ||
d5edaedc JB |
1417 | /* |
1418 | * If we are scanning right now then the parameters will | |
1419 | * take effect when scan finishes. | |
1420 | */ | |
fbe9c429 | 1421 | if (local->scanning) |
d5edaedc JB |
1422 | return; |
1423 | ||
965bedad | 1424 | if (conf->dynamic_ps_timeout > 0 && |
30686bf7 | 1425 | !ieee80211_hw_check(&local->hw, SUPPORTS_DYNAMIC_PS)) { |
965bedad JB |
1426 | mod_timer(&local->dynamic_ps_timer, jiffies + |
1427 | msecs_to_jiffies(conf->dynamic_ps_timeout)); | |
1428 | } else { | |
30686bf7 | 1429 | if (ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK)) |
965bedad | 1430 | ieee80211_send_nullfunc(local, sdata, 1); |
375177bf | 1431 | |
30686bf7 JB |
1432 | if (ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK) && |
1433 | ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) | |
2a13052f JO |
1434 | return; |
1435 | ||
1436 | conf->flags |= IEEE80211_CONF_PS; | |
1437 | ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); | |
965bedad JB |
1438 | } |
1439 | } | |
1440 | ||
1441 | static void ieee80211_change_ps(struct ieee80211_local *local) | |
1442 | { | |
1443 | struct ieee80211_conf *conf = &local->hw.conf; | |
1444 | ||
1445 | if (local->ps_sdata) { | |
965bedad JB |
1446 | ieee80211_enable_ps(local, local->ps_sdata); |
1447 | } else if (conf->flags & IEEE80211_CONF_PS) { | |
1448 | conf->flags &= ~IEEE80211_CONF_PS; | |
1449 | ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); | |
1450 | del_timer_sync(&local->dynamic_ps_timer); | |
1451 | cancel_work_sync(&local->dynamic_ps_enable_work); | |
1452 | } | |
1453 | } | |
1454 | ||
808118cb JY |
1455 | static bool ieee80211_powersave_allowed(struct ieee80211_sub_if_data *sdata) |
1456 | { | |
1457 | struct ieee80211_if_managed *mgd = &sdata->u.mgd; | |
1458 | struct sta_info *sta = NULL; | |
c2c98fde | 1459 | bool authorized = false; |
808118cb JY |
1460 | |
1461 | if (!mgd->powersave) | |
1462 | return false; | |
1463 | ||
05cb9108 JB |
1464 | if (mgd->broken_ap) |
1465 | return false; | |
1466 | ||
808118cb JY |
1467 | if (!mgd->associated) |
1468 | return false; | |
1469 | ||
392b9ffb | 1470 | if (mgd->flags & IEEE80211_STA_CONNECTION_POLL) |
808118cb JY |
1471 | return false; |
1472 | ||
989c6505 | 1473 | if (!mgd->have_beacon) |
ce857888 AB |
1474 | return false; |
1475 | ||
808118cb JY |
1476 | rcu_read_lock(); |
1477 | sta = sta_info_get(sdata, mgd->bssid); | |
1478 | if (sta) | |
c2c98fde | 1479 | authorized = test_sta_flag(sta, WLAN_STA_AUTHORIZED); |
808118cb JY |
1480 | rcu_read_unlock(); |
1481 | ||
c2c98fde | 1482 | return authorized; |
808118cb JY |
1483 | } |
1484 | ||
965bedad | 1485 | /* need to hold RTNL or interface lock */ |
10f644a4 | 1486 | void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency) |
965bedad JB |
1487 | { |
1488 | struct ieee80211_sub_if_data *sdata, *found = NULL; | |
1489 | int count = 0; | |
195e294d | 1490 | int timeout; |
965bedad | 1491 | |
30686bf7 | 1492 | if (!ieee80211_hw_check(&local->hw, SUPPORTS_PS)) { |
965bedad JB |
1493 | local->ps_sdata = NULL; |
1494 | return; | |
1495 | } | |
1496 | ||
1497 | list_for_each_entry(sdata, &local->interfaces, list) { | |
9607e6b6 | 1498 | if (!ieee80211_sdata_running(sdata)) |
965bedad | 1499 | continue; |
8c7914de RM |
1500 | if (sdata->vif.type == NL80211_IFTYPE_AP) { |
1501 | /* If an AP vif is found, then disable PS | |
1502 | * by setting the count to zero thereby setting | |
1503 | * ps_sdata to NULL. | |
1504 | */ | |
1505 | count = 0; | |
1506 | break; | |
1507 | } | |
965bedad JB |
1508 | if (sdata->vif.type != NL80211_IFTYPE_STATION) |
1509 | continue; | |
1510 | found = sdata; | |
1511 | count++; | |
1512 | } | |
1513 | ||
808118cb | 1514 | if (count == 1 && ieee80211_powersave_allowed(found)) { |
10f644a4 JB |
1515 | s32 beaconint_us; |
1516 | ||
1517 | if (latency < 0) | |
ed77134b | 1518 | latency = pm_qos_request(PM_QOS_NETWORK_LATENCY); |
10f644a4 JB |
1519 | |
1520 | beaconint_us = ieee80211_tu_to_usec( | |
1521 | found->vif.bss_conf.beacon_int); | |
1522 | ||
ff616381 | 1523 | timeout = local->dynamic_ps_forced_timeout; |
195e294d JO |
1524 | if (timeout < 0) { |
1525 | /* | |
ff616381 JO |
1526 | * Go to full PSM if the user configures a very low |
1527 | * latency requirement. | |
0ab82b04 EP |
1528 | * The 2000 second value is there for compatibility |
1529 | * until the PM_QOS_NETWORK_LATENCY is configured | |
1530 | * with real values. | |
195e294d | 1531 | */ |
0ab82b04 EP |
1532 | if (latency > (1900 * USEC_PER_MSEC) && |
1533 | latency != (2000 * USEC_PER_SEC)) | |
195e294d | 1534 | timeout = 0; |
ff616381 JO |
1535 | else |
1536 | timeout = 100; | |
195e294d | 1537 | } |
09b85568 | 1538 | local->hw.conf.dynamic_ps_timeout = timeout; |
195e294d | 1539 | |
04fe2037 | 1540 | if (beaconint_us > latency) { |
10f644a4 | 1541 | local->ps_sdata = NULL; |
04fe2037 | 1542 | } else { |
04fe2037 | 1543 | int maxslp = 1; |
826262c3 | 1544 | u8 dtimper = found->u.mgd.dtim_period; |
56007a02 JB |
1545 | |
1546 | /* If the TIM IE is invalid, pretend the value is 1 */ | |
1547 | if (!dtimper) | |
1548 | dtimper = 1; | |
1549 | else if (dtimper > 1) | |
04fe2037 JB |
1550 | maxslp = min_t(int, dtimper, |
1551 | latency / beaconint_us); | |
1552 | ||
9ccebe61 | 1553 | local->hw.conf.max_sleep_period = maxslp; |
56007a02 | 1554 | local->hw.conf.ps_dtim_period = dtimper; |
10f644a4 | 1555 | local->ps_sdata = found; |
04fe2037 | 1556 | } |
10f644a4 | 1557 | } else { |
965bedad | 1558 | local->ps_sdata = NULL; |
10f644a4 | 1559 | } |
965bedad JB |
1560 | |
1561 | ieee80211_change_ps(local); | |
1562 | } | |
1563 | ||
ab095877 EP |
1564 | void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata) |
1565 | { | |
1566 | bool ps_allowed = ieee80211_powersave_allowed(sdata); | |
1567 | ||
1568 | if (sdata->vif.bss_conf.ps != ps_allowed) { | |
1569 | sdata->vif.bss_conf.ps = ps_allowed; | |
1570 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_PS); | |
1571 | } | |
1572 | } | |
1573 | ||
965bedad JB |
1574 | void ieee80211_dynamic_ps_disable_work(struct work_struct *work) |
1575 | { | |
1576 | struct ieee80211_local *local = | |
1577 | container_of(work, struct ieee80211_local, | |
1578 | dynamic_ps_disable_work); | |
1579 | ||
1580 | if (local->hw.conf.flags & IEEE80211_CONF_PS) { | |
1581 | local->hw.conf.flags &= ~IEEE80211_CONF_PS; | |
1582 | ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); | |
1583 | } | |
1584 | ||
1585 | ieee80211_wake_queues_by_reason(&local->hw, | |
445ea4e8 | 1586 | IEEE80211_MAX_QUEUE_MAP, |
cca07b00 LC |
1587 | IEEE80211_QUEUE_STOP_REASON_PS, |
1588 | false); | |
965bedad JB |
1589 | } |
1590 | ||
1591 | void ieee80211_dynamic_ps_enable_work(struct work_struct *work) | |
1592 | { | |
1593 | struct ieee80211_local *local = | |
1594 | container_of(work, struct ieee80211_local, | |
1595 | dynamic_ps_enable_work); | |
1596 | struct ieee80211_sub_if_data *sdata = local->ps_sdata; | |
5e34069c | 1597 | struct ieee80211_if_managed *ifmgd; |
1ddc2867 RM |
1598 | unsigned long flags; |
1599 | int q; | |
965bedad JB |
1600 | |
1601 | /* can only happen when PS was just disabled anyway */ | |
1602 | if (!sdata) | |
1603 | return; | |
1604 | ||
5e34069c CL |
1605 | ifmgd = &sdata->u.mgd; |
1606 | ||
965bedad JB |
1607 | if (local->hw.conf.flags & IEEE80211_CONF_PS) |
1608 | return; | |
1609 | ||
09b85568 | 1610 | if (local->hw.conf.dynamic_ps_timeout > 0) { |
77b7023a AN |
1611 | /* don't enter PS if TX frames are pending */ |
1612 | if (drv_tx_frames_pending(local)) { | |
1ddc2867 RM |
1613 | mod_timer(&local->dynamic_ps_timer, jiffies + |
1614 | msecs_to_jiffies( | |
1615 | local->hw.conf.dynamic_ps_timeout)); | |
1616 | return; | |
1617 | } | |
77b7023a AN |
1618 | |
1619 | /* | |
1620 | * transmission can be stopped by others which leads to | |
1621 | * dynamic_ps_timer expiry. Postpone the ps timer if it | |
1622 | * is not the actual idle state. | |
1623 | */ | |
1624 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); | |
1625 | for (q = 0; q < local->hw.queues; q++) { | |
1626 | if (local->queue_stop_reasons[q]) { | |
1627 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, | |
1628 | flags); | |
1629 | mod_timer(&local->dynamic_ps_timer, jiffies + | |
1630 | msecs_to_jiffies( | |
1631 | local->hw.conf.dynamic_ps_timeout)); | |
1632 | return; | |
1633 | } | |
1634 | } | |
1635 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
1ddc2867 | 1636 | } |
1ddc2867 | 1637 | |
30686bf7 | 1638 | if (ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK) && |
9c38a8b4 | 1639 | !(ifmgd->flags & IEEE80211_STA_NULLFUNC_ACKED)) { |
a1598383 | 1640 | if (drv_tx_frames_pending(local)) { |
e8306f98 VN |
1641 | mod_timer(&local->dynamic_ps_timer, jiffies + |
1642 | msecs_to_jiffies( | |
1643 | local->hw.conf.dynamic_ps_timeout)); | |
a1598383 | 1644 | } else { |
e8306f98 VN |
1645 | ieee80211_send_nullfunc(local, sdata, 1); |
1646 | /* Flush to get the tx status of nullfunc frame */ | |
3b24f4c6 | 1647 | ieee80211_flush_queues(local, sdata, false); |
e8306f98 | 1648 | } |
f3e85b9e VN |
1649 | } |
1650 | ||
30686bf7 JB |
1651 | if (!(ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS) && |
1652 | ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK)) || | |
375177bf VN |
1653 | (ifmgd->flags & IEEE80211_STA_NULLFUNC_ACKED)) { |
1654 | ifmgd->flags &= ~IEEE80211_STA_NULLFUNC_ACKED; | |
1655 | local->hw.conf.flags |= IEEE80211_CONF_PS; | |
1656 | ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); | |
1657 | } | |
965bedad JB |
1658 | } |
1659 | ||
1660 | void ieee80211_dynamic_ps_timer(unsigned long data) | |
1661 | { | |
1662 | struct ieee80211_local *local = (void *) data; | |
1663 | ||
42935eca | 1664 | ieee80211_queue_work(&local->hw, &local->dynamic_ps_enable_work); |
965bedad JB |
1665 | } |
1666 | ||
164eb02d SW |
1667 | void ieee80211_dfs_cac_timer_work(struct work_struct *work) |
1668 | { | |
1669 | struct delayed_work *delayed_work = | |
1670 | container_of(work, struct delayed_work, work); | |
1671 | struct ieee80211_sub_if_data *sdata = | |
1672 | container_of(delayed_work, struct ieee80211_sub_if_data, | |
1673 | dfs_cac_timer_work); | |
d2859df5 | 1674 | struct cfg80211_chan_def chandef = sdata->vif.bss_conf.chandef; |
164eb02d | 1675 | |
34a3740d JB |
1676 | mutex_lock(&sdata->local->mtx); |
1677 | if (sdata->wdev.cac_started) { | |
1678 | ieee80211_vif_release_channel(sdata); | |
1679 | cfg80211_cac_event(sdata->dev, &chandef, | |
1680 | NL80211_RADAR_CAC_FINISHED, | |
1681 | GFP_KERNEL); | |
1682 | } | |
1683 | mutex_unlock(&sdata->local->mtx); | |
164eb02d SW |
1684 | } |
1685 | ||
02219b3a JB |
1686 | static bool |
1687 | __ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata) | |
1688 | { | |
1689 | struct ieee80211_local *local = sdata->local; | |
1690 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
cc72f6e2 | 1691 | bool ret = false; |
02219b3a JB |
1692 | int ac; |
1693 | ||
1694 | if (local->hw.queues < IEEE80211_NUM_ACS) | |
1695 | return false; | |
1696 | ||
1697 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { | |
1698 | struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac]; | |
1699 | int non_acm_ac; | |
1700 | unsigned long now = jiffies; | |
1701 | ||
1702 | if (tx_tspec->action == TX_TSPEC_ACTION_NONE && | |
1703 | tx_tspec->admitted_time && | |
1704 | time_after(now, tx_tspec->time_slice_start + HZ)) { | |
1705 | tx_tspec->consumed_tx_time = 0; | |
1706 | tx_tspec->time_slice_start = now; | |
1707 | ||
1708 | if (tx_tspec->downgraded) | |
1709 | tx_tspec->action = | |
1710 | TX_TSPEC_ACTION_STOP_DOWNGRADE; | |
1711 | } | |
1712 | ||
1713 | switch (tx_tspec->action) { | |
1714 | case TX_TSPEC_ACTION_STOP_DOWNGRADE: | |
1715 | /* take the original parameters */ | |
1716 | if (drv_conf_tx(local, sdata, ac, &sdata->tx_conf[ac])) | |
1717 | sdata_err(sdata, | |
1718 | "failed to set TX queue parameters for queue %d\n", | |
1719 | ac); | |
1720 | tx_tspec->action = TX_TSPEC_ACTION_NONE; | |
1721 | tx_tspec->downgraded = false; | |
1722 | ret = true; | |
1723 | break; | |
1724 | case TX_TSPEC_ACTION_DOWNGRADE: | |
1725 | if (time_after(now, tx_tspec->time_slice_start + HZ)) { | |
1726 | tx_tspec->action = TX_TSPEC_ACTION_NONE; | |
1727 | ret = true; | |
1728 | break; | |
1729 | } | |
1730 | /* downgrade next lower non-ACM AC */ | |
1731 | for (non_acm_ac = ac + 1; | |
1732 | non_acm_ac < IEEE80211_NUM_ACS; | |
1733 | non_acm_ac++) | |
1734 | if (!(sdata->wmm_acm & BIT(7 - 2 * non_acm_ac))) | |
1735 | break; | |
1736 | /* The loop will result in using BK even if it requires | |
1737 | * admission control, such configuration makes no sense | |
1738 | * and we have to transmit somehow - the AC selection | |
1739 | * does the same thing. | |
1740 | */ | |
1741 | if (drv_conf_tx(local, sdata, ac, | |
1742 | &sdata->tx_conf[non_acm_ac])) | |
1743 | sdata_err(sdata, | |
1744 | "failed to set TX queue parameters for queue %d\n", | |
1745 | ac); | |
1746 | tx_tspec->action = TX_TSPEC_ACTION_NONE; | |
1747 | ret = true; | |
1748 | schedule_delayed_work(&ifmgd->tx_tspec_wk, | |
1749 | tx_tspec->time_slice_start + HZ - now + 1); | |
1750 | break; | |
1751 | case TX_TSPEC_ACTION_NONE: | |
1752 | /* nothing now */ | |
1753 | break; | |
1754 | } | |
1755 | } | |
1756 | ||
1757 | return ret; | |
1758 | } | |
1759 | ||
1760 | void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata) | |
1761 | { | |
1762 | if (__ieee80211_sta_handle_tspec_ac_params(sdata)) | |
1763 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS); | |
1764 | } | |
1765 | ||
1766 | static void ieee80211_sta_handle_tspec_ac_params_wk(struct work_struct *work) | |
1767 | { | |
1768 | struct ieee80211_sub_if_data *sdata; | |
1769 | ||
1770 | sdata = container_of(work, struct ieee80211_sub_if_data, | |
1771 | u.mgd.tx_tspec_wk.work); | |
1772 | ieee80211_sta_handle_tspec_ac_params(sdata); | |
1773 | } | |
1774 | ||
60f8b39c | 1775 | /* MLME */ |
7d25745d | 1776 | static bool ieee80211_sta_wmm_params(struct ieee80211_local *local, |
4ced3f74 | 1777 | struct ieee80211_sub_if_data *sdata, |
4a3cb702 | 1778 | const u8 *wmm_param, size_t wmm_param_len) |
f0706e82 | 1779 | { |
f0706e82 | 1780 | struct ieee80211_tx_queue_params params; |
4ced3f74 | 1781 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
f0706e82 JB |
1782 | size_t left; |
1783 | int count; | |
4a3cb702 JB |
1784 | const u8 *pos; |
1785 | u8 uapsd_queues = 0; | |
f0706e82 | 1786 | |
e1b3ec1a | 1787 | if (!local->ops->conf_tx) |
7d25745d | 1788 | return false; |
e1b3ec1a | 1789 | |
32c5057b | 1790 | if (local->hw.queues < IEEE80211_NUM_ACS) |
7d25745d | 1791 | return false; |
3434fbd3 JB |
1792 | |
1793 | if (!wmm_param) | |
7d25745d | 1794 | return false; |
3434fbd3 | 1795 | |
f0706e82 | 1796 | if (wmm_param_len < 8 || wmm_param[5] /* version */ != 1) |
7d25745d | 1797 | return false; |
ab13315a KV |
1798 | |
1799 | if (ifmgd->flags & IEEE80211_STA_UAPSD_ENABLED) | |
dc41e4d4 | 1800 | uapsd_queues = ifmgd->uapsd_queues; |
ab13315a | 1801 | |
f0706e82 | 1802 | count = wmm_param[6] & 0x0f; |
46900298 | 1803 | if (count == ifmgd->wmm_last_param_set) |
7d25745d | 1804 | return false; |
46900298 | 1805 | ifmgd->wmm_last_param_set = count; |
f0706e82 JB |
1806 | |
1807 | pos = wmm_param + 8; | |
1808 | left = wmm_param_len - 8; | |
1809 | ||
1810 | memset(¶ms, 0, sizeof(params)); | |
1811 | ||
00e96dec | 1812 | sdata->wmm_acm = 0; |
f0706e82 JB |
1813 | for (; left >= 4; left -= 4, pos += 4) { |
1814 | int aci = (pos[0] >> 5) & 0x03; | |
1815 | int acm = (pos[0] >> 4) & 0x01; | |
ab13315a | 1816 | bool uapsd = false; |
f0706e82 JB |
1817 | int queue; |
1818 | ||
1819 | switch (aci) { | |
0eeb59fe | 1820 | case 1: /* AC_BK */ |
e100bb64 | 1821 | queue = 3; |
988c0f72 | 1822 | if (acm) |
00e96dec | 1823 | sdata->wmm_acm |= BIT(1) | BIT(2); /* BK/- */ |
ab13315a KV |
1824 | if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BK) |
1825 | uapsd = true; | |
f0706e82 | 1826 | break; |
0eeb59fe | 1827 | case 2: /* AC_VI */ |
e100bb64 | 1828 | queue = 1; |
988c0f72 | 1829 | if (acm) |
00e96dec | 1830 | sdata->wmm_acm |= BIT(4) | BIT(5); /* CL/VI */ |
ab13315a KV |
1831 | if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VI) |
1832 | uapsd = true; | |
f0706e82 | 1833 | break; |
0eeb59fe | 1834 | case 3: /* AC_VO */ |
e100bb64 | 1835 | queue = 0; |
988c0f72 | 1836 | if (acm) |
00e96dec | 1837 | sdata->wmm_acm |= BIT(6) | BIT(7); /* VO/NC */ |
ab13315a KV |
1838 | if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VO) |
1839 | uapsd = true; | |
f0706e82 | 1840 | break; |
0eeb59fe | 1841 | case 0: /* AC_BE */ |
f0706e82 | 1842 | default: |
e100bb64 | 1843 | queue = 2; |
988c0f72 | 1844 | if (acm) |
00e96dec | 1845 | sdata->wmm_acm |= BIT(0) | BIT(3); /* BE/EE */ |
ab13315a KV |
1846 | if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BE) |
1847 | uapsd = true; | |
f0706e82 JB |
1848 | break; |
1849 | } | |
1850 | ||
1851 | params.aifs = pos[0] & 0x0f; | |
1852 | params.cw_max = ecw2cw((pos[1] & 0xf0) >> 4); | |
1853 | params.cw_min = ecw2cw(pos[1] & 0x0f); | |
f434b2d1 | 1854 | params.txop = get_unaligned_le16(pos + 2); |
908f8d07 | 1855 | params.acm = acm; |
ab13315a KV |
1856 | params.uapsd = uapsd; |
1857 | ||
bdcbd8e0 | 1858 | mlme_dbg(sdata, |
02219b3a | 1859 | "WMM queue=%d aci=%d acm=%d aifs=%d cWmin=%d cWmax=%d txop=%d uapsd=%d, downgraded=%d\n", |
bdcbd8e0 JB |
1860 | queue, aci, acm, |
1861 | params.aifs, params.cw_min, params.cw_max, | |
02219b3a JB |
1862 | params.txop, params.uapsd, |
1863 | ifmgd->tx_tspec[queue].downgraded); | |
f6f3def3 | 1864 | sdata->tx_conf[queue] = params; |
02219b3a JB |
1865 | if (!ifmgd->tx_tspec[queue].downgraded && |
1866 | drv_conf_tx(local, sdata, queue, ¶ms)) | |
bdcbd8e0 JB |
1867 | sdata_err(sdata, |
1868 | "failed to set TX queue parameters for queue %d\n", | |
1869 | queue); | |
f0706e82 | 1870 | } |
e1b3ec1a SG |
1871 | |
1872 | /* enable WMM or activate new settings */ | |
4ced3f74 | 1873 | sdata->vif.bss_conf.qos = true; |
7d25745d | 1874 | return true; |
f0706e82 JB |
1875 | } |
1876 | ||
925e64c3 SG |
1877 | static void __ieee80211_stop_poll(struct ieee80211_sub_if_data *sdata) |
1878 | { | |
1879 | lockdep_assert_held(&sdata->local->mtx); | |
1880 | ||
392b9ffb | 1881 | sdata->u.mgd.flags &= ~IEEE80211_STA_CONNECTION_POLL; |
925e64c3 SG |
1882 | ieee80211_run_deferred_scan(sdata->local); |
1883 | } | |
1884 | ||
1885 | static void ieee80211_stop_poll(struct ieee80211_sub_if_data *sdata) | |
1886 | { | |
1887 | mutex_lock(&sdata->local->mtx); | |
1888 | __ieee80211_stop_poll(sdata); | |
1889 | mutex_unlock(&sdata->local->mtx); | |
1890 | } | |
1891 | ||
7a5158ef JB |
1892 | static u32 ieee80211_handle_bss_capability(struct ieee80211_sub_if_data *sdata, |
1893 | u16 capab, bool erp_valid, u8 erp) | |
5628221c | 1894 | { |
bda3933a | 1895 | struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf; |
471b3efd | 1896 | u32 changed = 0; |
7a5158ef JB |
1897 | bool use_protection; |
1898 | bool use_short_preamble; | |
1899 | bool use_short_slot; | |
1900 | ||
1901 | if (erp_valid) { | |
1902 | use_protection = (erp & WLAN_ERP_USE_PROTECTION) != 0; | |
1903 | use_short_preamble = (erp & WLAN_ERP_BARKER_PREAMBLE) == 0; | |
1904 | } else { | |
1905 | use_protection = false; | |
1906 | use_short_preamble = !!(capab & WLAN_CAPABILITY_SHORT_PREAMBLE); | |
1907 | } | |
1908 | ||
1909 | use_short_slot = !!(capab & WLAN_CAPABILITY_SHORT_SLOT_TIME); | |
55de908a | 1910 | if (ieee80211_get_sdata_band(sdata) == IEEE80211_BAND_5GHZ) |
43d35343 | 1911 | use_short_slot = true; |
5628221c | 1912 | |
471b3efd | 1913 | if (use_protection != bss_conf->use_cts_prot) { |
471b3efd JB |
1914 | bss_conf->use_cts_prot = use_protection; |
1915 | changed |= BSS_CHANGED_ERP_CTS_PROT; | |
5628221c | 1916 | } |
7e9ed188 | 1917 | |
d43c7b37 | 1918 | if (use_short_preamble != bss_conf->use_short_preamble) { |
d43c7b37 | 1919 | bss_conf->use_short_preamble = use_short_preamble; |
471b3efd | 1920 | changed |= BSS_CHANGED_ERP_PREAMBLE; |
7e9ed188 | 1921 | } |
d9430a32 | 1922 | |
7a5158ef | 1923 | if (use_short_slot != bss_conf->use_short_slot) { |
7a5158ef JB |
1924 | bss_conf->use_short_slot = use_short_slot; |
1925 | changed |= BSS_CHANGED_ERP_SLOT; | |
50c4afb9 JL |
1926 | } |
1927 | ||
1928 | return changed; | |
1929 | } | |
1930 | ||
f698d856 | 1931 | static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata, |
0c1ad2ca | 1932 | struct cfg80211_bss *cbss, |
ae5eb026 | 1933 | u32 bss_info_changed) |
f0706e82 | 1934 | { |
0c1ad2ca | 1935 | struct ieee80211_bss *bss = (void *)cbss->priv; |
471b3efd | 1936 | struct ieee80211_local *local = sdata->local; |
68542962 | 1937 | struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf; |
d6f2da5b | 1938 | |
ae5eb026 | 1939 | bss_info_changed |= BSS_CHANGED_ASSOC; |
77fdaa12 | 1940 | bss_info_changed |= ieee80211_handle_bss_capability(sdata, |
50ae34a2 | 1941 | bss_conf->assoc_capability, bss->has_erp_value, bss->erp_value); |
21c0cbe7 | 1942 | |
7ccc8bd7 | 1943 | sdata->u.mgd.beacon_timeout = usecs_to_jiffies(ieee80211_tu_to_usec( |
59c1ec2b | 1944 | beacon_loss_count * bss_conf->beacon_int)); |
7ccc8bd7 | 1945 | |
0c1ad2ca JB |
1946 | sdata->u.mgd.associated = cbss; |
1947 | memcpy(sdata->u.mgd.bssid, cbss->bssid, ETH_ALEN); | |
f0706e82 | 1948 | |
17e4ec14 JM |
1949 | sdata->u.mgd.flags |= IEEE80211_STA_RESET_SIGNAL_AVE; |
1950 | ||
488dd7b5 | 1951 | if (sdata->vif.p2p) { |
9caf0364 | 1952 | const struct cfg80211_bss_ies *ies; |
488dd7b5 | 1953 | |
9caf0364 JB |
1954 | rcu_read_lock(); |
1955 | ies = rcu_dereference(cbss->ies); | |
1956 | if (ies) { | |
9caf0364 JB |
1957 | int ret; |
1958 | ||
1959 | ret = cfg80211_get_p2p_attr( | |
1960 | ies->data, ies->len, | |
1961 | IEEE80211_P2P_ATTR_ABSENCE_NOTICE, | |
67baf663 JD |
1962 | (u8 *) &bss_conf->p2p_noa_attr, |
1963 | sizeof(bss_conf->p2p_noa_attr)); | |
9caf0364 | 1964 | if (ret >= 2) { |
67baf663 JD |
1965 | sdata->u.mgd.p2p_noa_index = |
1966 | bss_conf->p2p_noa_attr.index; | |
9caf0364 | 1967 | bss_info_changed |= BSS_CHANGED_P2P_PS; |
9caf0364 | 1968 | } |
488dd7b5 | 1969 | } |
9caf0364 | 1970 | rcu_read_unlock(); |
488dd7b5 JB |
1971 | } |
1972 | ||
b291ba11 | 1973 | /* just to be sure */ |
925e64c3 | 1974 | ieee80211_stop_poll(sdata); |
b291ba11 | 1975 | |
9ac19a90 | 1976 | ieee80211_led_assoc(local, 1); |
9306102e | 1977 | |
989c6505 | 1978 | if (sdata->u.mgd.have_beacon) { |
826262c3 JB |
1979 | /* |
1980 | * If the AP is buggy we may get here with no DTIM period | |
1981 | * known, so assume it's 1 which is the only safe assumption | |
1982 | * in that case, although if the TIM IE is broken powersave | |
1983 | * probably just won't work at all. | |
1984 | */ | |
1985 | bss_conf->dtim_period = sdata->u.mgd.dtim_period ?: 1; | |
817cee76 | 1986 | bss_conf->beacon_rate = bss->beacon_rate; |
989c6505 | 1987 | bss_info_changed |= BSS_CHANGED_BEACON_INFO; |
826262c3 | 1988 | } else { |
817cee76 | 1989 | bss_conf->beacon_rate = NULL; |
e5b900d2 | 1990 | bss_conf->dtim_period = 0; |
826262c3 | 1991 | } |
e5b900d2 | 1992 | |
68542962 | 1993 | bss_conf->assoc = 1; |
9cef8737 | 1994 | |
a97c13c3 | 1995 | /* Tell the driver to monitor connection quality (if supported) */ |
ea086359 | 1996 | if (sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI && |
68542962 | 1997 | bss_conf->cqm_rssi_thold) |
a97c13c3 JO |
1998 | bss_info_changed |= BSS_CHANGED_CQM; |
1999 | ||
68542962 | 2000 | /* Enable ARP filtering */ |
0f19b41e | 2001 | if (bss_conf->arp_addr_cnt) |
68542962 | 2002 | bss_info_changed |= BSS_CHANGED_ARP_FILTER; |
68542962 | 2003 | |
ae5eb026 | 2004 | ieee80211_bss_info_change_notify(sdata, bss_info_changed); |
f0706e82 | 2005 | |
056508dc JB |
2006 | mutex_lock(&local->iflist_mtx); |
2007 | ieee80211_recalc_ps(local, -1); | |
2008 | mutex_unlock(&local->iflist_mtx); | |
e0cb686f | 2009 | |
04ecd257 | 2010 | ieee80211_recalc_smps(sdata); |
ab095877 EP |
2011 | ieee80211_recalc_ps_vif(sdata); |
2012 | ||
9ac19a90 | 2013 | netif_carrier_on(sdata->dev); |
f0706e82 JB |
2014 | } |
2015 | ||
e69e95db | 2016 | static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata, |
37ad3888 JB |
2017 | u16 stype, u16 reason, bool tx, |
2018 | u8 *frame_buf) | |
aa458d17 | 2019 | { |
46900298 | 2020 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
aa458d17 | 2021 | struct ieee80211_local *local = sdata->local; |
3cc5240b | 2022 | u32 changed = 0; |
aa458d17 | 2023 | |
8d61ffa5 | 2024 | sdata_assert_lock(sdata); |
77fdaa12 | 2025 | |
37ad3888 JB |
2026 | if (WARN_ON_ONCE(tx && !frame_buf)) |
2027 | return; | |
2028 | ||
b291ba11 JB |
2029 | if (WARN_ON(!ifmgd->associated)) |
2030 | return; | |
2031 | ||
79543d8e DS |
2032 | ieee80211_stop_poll(sdata); |
2033 | ||
77fdaa12 | 2034 | ifmgd->associated = NULL; |
aa458d17 TW |
2035 | netif_carrier_off(sdata->dev); |
2036 | ||
88bc40e8 EP |
2037 | /* |
2038 | * if we want to get out of ps before disassoc (why?) we have | |
2039 | * to do it before sending disassoc, as otherwise the null-packet | |
2040 | * won't be valid. | |
2041 | */ | |
2042 | if (local->hw.conf.flags & IEEE80211_CONF_PS) { | |
2043 | local->hw.conf.flags &= ~IEEE80211_CONF_PS; | |
2044 | ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); | |
2045 | } | |
2046 | local->ps_sdata = NULL; | |
2047 | ||
ab095877 EP |
2048 | /* disable per-vif ps */ |
2049 | ieee80211_recalc_ps_vif(sdata); | |
2050 | ||
14f2ae83 EG |
2051 | /* make sure ongoing transmission finishes */ |
2052 | synchronize_net(); | |
2053 | ||
3b24f4c6 EG |
2054 | /* |
2055 | * drop any frame before deauth/disassoc, this can be data or | |
2056 | * management frame. Since we are disconnecting, we should not | |
2057 | * insist sending these frames which can take time and delay | |
2058 | * the disconnection and possible the roaming. | |
2059 | */ | |
f823981e | 2060 | if (tx) |
3b24f4c6 | 2061 | ieee80211_flush_queues(local, sdata, true); |
f823981e | 2062 | |
37ad3888 JB |
2063 | /* deauthenticate/disassociate now */ |
2064 | if (tx || frame_buf) | |
88a9e31c EP |
2065 | ieee80211_send_deauth_disassoc(sdata, ifmgd->bssid, stype, |
2066 | reason, tx, frame_buf); | |
37ad3888 | 2067 | |
3b24f4c6 | 2068 | /* flush out frame - make sure the deauth was actually sent */ |
37ad3888 | 2069 | if (tx) |
3b24f4c6 | 2070 | ieee80211_flush_queues(local, sdata, false); |
37ad3888 | 2071 | |
88a9e31c | 2072 | /* clear bssid only after building the needed mgmt frames */ |
c84a67a2 | 2073 | eth_zero_addr(ifmgd->bssid); |
88a9e31c | 2074 | |
37ad3888 | 2075 | /* remove AP and TDLS peers */ |
d34ba216 | 2076 | sta_info_flush(sdata); |
37ad3888 JB |
2077 | |
2078 | /* finally reset all BSS / config parameters */ | |
f5e5bf25 TW |
2079 | changed |= ieee80211_reset_erp_info(sdata); |
2080 | ||
f5e5bf25 | 2081 | ieee80211_led_assoc(local, 0); |
ae5eb026 JB |
2082 | changed |= BSS_CHANGED_ASSOC; |
2083 | sdata->vif.bss_conf.assoc = false; | |
f5e5bf25 | 2084 | |
67baf663 JD |
2085 | ifmgd->p2p_noa_index = -1; |
2086 | memset(&sdata->vif.bss_conf.p2p_noa_attr, 0, | |
2087 | sizeof(sdata->vif.bss_conf.p2p_noa_attr)); | |
488dd7b5 | 2088 | |
dd5ecfea | 2089 | /* on the next assoc, re-program HT/VHT parameters */ |
ef96a842 BG |
2090 | memset(&ifmgd->ht_capa, 0, sizeof(ifmgd->ht_capa)); |
2091 | memset(&ifmgd->ht_capa_mask, 0, sizeof(ifmgd->ht_capa_mask)); | |
dd5ecfea JB |
2092 | memset(&ifmgd->vht_capa, 0, sizeof(ifmgd->vht_capa)); |
2093 | memset(&ifmgd->vht_capa_mask, 0, sizeof(ifmgd->vht_capa_mask)); | |
322cd406 | 2094 | sdata->flags &= ~IEEE80211_SDATA_MU_MIMO_OWNER; |
413ad50a | 2095 | |
1ea6f9c0 | 2096 | sdata->ap_power_level = IEEE80211_UNSET_POWER_LEVEL; |
a8302de9 | 2097 | |
520eb820 KV |
2098 | del_timer_sync(&local->dynamic_ps_timer); |
2099 | cancel_work_sync(&local->dynamic_ps_enable_work); | |
2100 | ||
68542962 | 2101 | /* Disable ARP filtering */ |
0f19b41e | 2102 | if (sdata->vif.bss_conf.arp_addr_cnt) |
68542962 | 2103 | changed |= BSS_CHANGED_ARP_FILTER; |
68542962 | 2104 | |
3abead59 JB |
2105 | sdata->vif.bss_conf.qos = false; |
2106 | changed |= BSS_CHANGED_QOS; | |
2107 | ||
0aaffa9b JB |
2108 | /* The BSSID (not really interesting) and HT changed */ |
2109 | changed |= BSS_CHANGED_BSSID | BSS_CHANGED_HT; | |
ae5eb026 | 2110 | ieee80211_bss_info_change_notify(sdata, changed); |
8e268e47 | 2111 | |
3abead59 JB |
2112 | /* disassociated - set to defaults now */ |
2113 | ieee80211_set_wmm_default(sdata, false); | |
2114 | ||
b9dcf712 JB |
2115 | del_timer_sync(&sdata->u.mgd.conn_mon_timer); |
2116 | del_timer_sync(&sdata->u.mgd.bcn_mon_timer); | |
2117 | del_timer_sync(&sdata->u.mgd.timer); | |
2118 | del_timer_sync(&sdata->u.mgd.chswitch_timer); | |
2d9957cc | 2119 | |
826262c3 | 2120 | sdata->vif.bss_conf.dtim_period = 0; |
817cee76 AB |
2121 | sdata->vif.bss_conf.beacon_rate = NULL; |
2122 | ||
989c6505 | 2123 | ifmgd->have_beacon = false; |
826262c3 | 2124 | |
028e8da0 | 2125 | ifmgd->flags = 0; |
34a3740d | 2126 | mutex_lock(&local->mtx); |
028e8da0 | 2127 | ieee80211_vif_release_channel(sdata); |
59af6928 MK |
2128 | |
2129 | sdata->vif.csa_active = false; | |
0c21e632 | 2130 | ifmgd->csa_waiting_bcn = false; |
f84eaa10 | 2131 | ifmgd->csa_ignored_same_chan = false; |
a46992b4 LC |
2132 | if (sdata->csa_block_tx) { |
2133 | ieee80211_wake_vif_queues(local, sdata, | |
2134 | IEEE80211_QUEUE_STOP_REASON_CSA); | |
2135 | sdata->csa_block_tx = false; | |
2136 | } | |
34a3740d | 2137 | mutex_unlock(&local->mtx); |
2475b1cc | 2138 | |
02219b3a JB |
2139 | /* existing TX TSPEC sessions no longer exist */ |
2140 | memset(ifmgd->tx_tspec, 0, sizeof(ifmgd->tx_tspec)); | |
2141 | cancel_delayed_work_sync(&ifmgd->tx_tspec_wk); | |
2142 | ||
2475b1cc | 2143 | sdata->encrypt_headroom = IEEE80211_ENCRYPT_HEADROOM; |
aa458d17 | 2144 | } |
f0706e82 | 2145 | |
3cf335d5 KV |
2146 | void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata, |
2147 | struct ieee80211_hdr *hdr) | |
2148 | { | |
2149 | /* | |
2150 | * We can postpone the mgd.timer whenever receiving unicast frames | |
2151 | * from AP because we know that the connection is working both ways | |
2152 | * at that time. But multicast frames (and hence also beacons) must | |
2153 | * be ignored here, because we need to trigger the timer during | |
b291ba11 JB |
2154 | * data idle periods for sending the periodic probe request to the |
2155 | * AP we're connected to. | |
3cf335d5 | 2156 | */ |
b291ba11 JB |
2157 | if (is_multicast_ether_addr(hdr->addr1)) |
2158 | return; | |
2159 | ||
be099e82 | 2160 | ieee80211_sta_reset_conn_monitor(sdata); |
3cf335d5 | 2161 | } |
f0706e82 | 2162 | |
4e5ff376 FF |
2163 | static void ieee80211_reset_ap_probe(struct ieee80211_sub_if_data *sdata) |
2164 | { | |
2165 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
133d40f9 | 2166 | struct ieee80211_local *local = sdata->local; |
4e5ff376 | 2167 | |
133d40f9 | 2168 | mutex_lock(&local->mtx); |
392b9ffb SG |
2169 | if (!(ifmgd->flags & IEEE80211_STA_CONNECTION_POLL)) |
2170 | goto out; | |
4e5ff376 | 2171 | |
925e64c3 | 2172 | __ieee80211_stop_poll(sdata); |
133d40f9 SG |
2173 | |
2174 | mutex_lock(&local->iflist_mtx); | |
2175 | ieee80211_recalc_ps(local, -1); | |
2176 | mutex_unlock(&local->iflist_mtx); | |
4e5ff376 | 2177 | |
30686bf7 | 2178 | if (ieee80211_hw_check(&sdata->local->hw, CONNECTION_MONITOR)) |
133d40f9 | 2179 | goto out; |
4e5ff376 FF |
2180 | |
2181 | /* | |
2182 | * We've received a probe response, but are not sure whether | |
2183 | * we have or will be receiving any beacons or data, so let's | |
2184 | * schedule the timers again, just in case. | |
2185 | */ | |
2186 | ieee80211_sta_reset_beacon_monitor(sdata); | |
2187 | ||
2188 | mod_timer(&ifmgd->conn_mon_timer, | |
2189 | round_jiffies_up(jiffies + | |
2190 | IEEE80211_CONNECTION_IDLE_TIME)); | |
133d40f9 | 2191 | out: |
133d40f9 | 2192 | mutex_unlock(&local->mtx); |
4e5ff376 FF |
2193 | } |
2194 | ||
02219b3a JB |
2195 | static void ieee80211_sta_tx_wmm_ac_notify(struct ieee80211_sub_if_data *sdata, |
2196 | struct ieee80211_hdr *hdr, | |
2197 | u16 tx_time) | |
2198 | { | |
2199 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
2200 | u16 tid = *ieee80211_get_qos_ctl(hdr) & IEEE80211_QOS_CTL_TID_MASK; | |
2201 | int ac = ieee80211_ac_from_tid(tid); | |
2202 | struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac]; | |
2203 | unsigned long now = jiffies; | |
2204 | ||
2205 | if (likely(!tx_tspec->admitted_time)) | |
2206 | return; | |
2207 | ||
2208 | if (time_after(now, tx_tspec->time_slice_start + HZ)) { | |
2209 | tx_tspec->consumed_tx_time = 0; | |
2210 | tx_tspec->time_slice_start = now; | |
2211 | ||
2212 | if (tx_tspec->downgraded) { | |
2213 | tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE; | |
2214 | schedule_delayed_work(&ifmgd->tx_tspec_wk, 0); | |
2215 | } | |
2216 | } | |
2217 | ||
2218 | if (tx_tspec->downgraded) | |
2219 | return; | |
2220 | ||
2221 | tx_tspec->consumed_tx_time += tx_time; | |
2222 | ||
2223 | if (tx_tspec->consumed_tx_time >= tx_tspec->admitted_time) { | |
2224 | tx_tspec->downgraded = true; | |
2225 | tx_tspec->action = TX_TSPEC_ACTION_DOWNGRADE; | |
2226 | schedule_delayed_work(&ifmgd->tx_tspec_wk, 0); | |
2227 | } | |
2228 | } | |
2229 | ||
4e5ff376 | 2230 | void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata, |
02219b3a | 2231 | struct ieee80211_hdr *hdr, bool ack, u16 tx_time) |
4e5ff376 | 2232 | { |
02219b3a JB |
2233 | ieee80211_sta_tx_wmm_ac_notify(sdata, hdr, tx_time); |
2234 | ||
75706d0e | 2235 | if (!ieee80211_is_data(hdr->frame_control)) |
4e5ff376 FF |
2236 | return; |
2237 | ||
4e5ff376 FF |
2238 | if (ieee80211_is_nullfunc(hdr->frame_control) && |
2239 | sdata->u.mgd.probe_send_count > 0) { | |
04ac3c0e | 2240 | if (ack) |
cab1c7fd | 2241 | ieee80211_sta_reset_conn_monitor(sdata); |
04ac3c0e FF |
2242 | else |
2243 | sdata->u.mgd.nullfunc_failed = true; | |
4e5ff376 | 2244 | ieee80211_queue_work(&sdata->local->hw, &sdata->work); |
cab1c7fd | 2245 | return; |
4e5ff376 | 2246 | } |
cab1c7fd WD |
2247 | |
2248 | if (ack) | |
2249 | ieee80211_sta_reset_conn_monitor(sdata); | |
4e5ff376 FF |
2250 | } |
2251 | ||
a43abf29 ML |
2252 | static void ieee80211_mgd_probe_ap_send(struct ieee80211_sub_if_data *sdata) |
2253 | { | |
2254 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
2255 | const u8 *ssid; | |
f01a067d | 2256 | u8 *dst = ifmgd->associated->bssid; |
180205bd | 2257 | u8 unicast_limit = max(1, max_probe_tries - 3); |
f01a067d LR |
2258 | |
2259 | /* | |
2260 | * Try sending broadcast probe requests for the last three | |
2261 | * probe requests after the first ones failed since some | |
2262 | * buggy APs only support broadcast probe requests. | |
2263 | */ | |
2264 | if (ifmgd->probe_send_count >= unicast_limit) | |
2265 | dst = NULL; | |
a43abf29 | 2266 | |
4e5ff376 FF |
2267 | /* |
2268 | * When the hardware reports an accurate Tx ACK status, it's | |
2269 | * better to send a nullfunc frame instead of a probe request, | |
2270 | * as it will kick us off the AP quickly if we aren't associated | |
2271 | * anymore. The timeout will be reset if the frame is ACKed by | |
2272 | * the AP. | |
2273 | */ | |
992e68bf SD |
2274 | ifmgd->probe_send_count++; |
2275 | ||
30686bf7 | 2276 | if (ieee80211_hw_check(&sdata->local->hw, REPORTS_TX_ACK_STATUS)) { |
04ac3c0e | 2277 | ifmgd->nullfunc_failed = false; |
4e5ff376 | 2278 | ieee80211_send_nullfunc(sdata->local, sdata, 0); |
04ac3c0e | 2279 | } else { |
88c868c4 SG |
2280 | int ssid_len; |
2281 | ||
9caf0364 | 2282 | rcu_read_lock(); |
4e5ff376 | 2283 | ssid = ieee80211_bss_get_ie(ifmgd->associated, WLAN_EID_SSID); |
88c868c4 SG |
2284 | if (WARN_ON_ONCE(ssid == NULL)) |
2285 | ssid_len = 0; | |
2286 | else | |
2287 | ssid_len = ssid[1]; | |
2288 | ||
a73f8e21 | 2289 | ieee80211_send_probe_req(sdata, sdata->vif.addr, dst, |
a344d677 | 2290 | ssid + 2, ssid_len, NULL, |
1672c0e3 | 2291 | 0, (u32) -1, true, 0, |
55de908a | 2292 | ifmgd->associated->channel, false); |
9caf0364 | 2293 | rcu_read_unlock(); |
4e5ff376 | 2294 | } |
a43abf29 | 2295 | |
180205bd | 2296 | ifmgd->probe_timeout = jiffies + msecs_to_jiffies(probe_wait_ms); |
8d61ffa5 | 2297 | run_again(sdata, ifmgd->probe_timeout); |
a43abf29 ML |
2298 | } |
2299 | ||
b291ba11 JB |
2300 | static void ieee80211_mgd_probe_ap(struct ieee80211_sub_if_data *sdata, |
2301 | bool beacon) | |
04de8381 | 2302 | { |
04de8381 | 2303 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
b291ba11 | 2304 | bool already = false; |
34bfc411 | 2305 | |
9607e6b6 | 2306 | if (!ieee80211_sdata_running(sdata)) |
0e2b6286 JB |
2307 | return; |
2308 | ||
8d61ffa5 | 2309 | sdata_lock(sdata); |
77fdaa12 JB |
2310 | |
2311 | if (!ifmgd->associated) | |
2312 | goto out; | |
2313 | ||
133d40f9 SG |
2314 | mutex_lock(&sdata->local->mtx); |
2315 | ||
2316 | if (sdata->local->tmp_channel || sdata->local->scanning) { | |
2317 | mutex_unlock(&sdata->local->mtx); | |
2318 | goto out; | |
2319 | } | |
2320 | ||
a13fbe54 | 2321 | if (beacon) { |
bdcbd8e0 | 2322 | mlme_dbg_ratelimited(sdata, |
59c1ec2b BG |
2323 | "detected beacon loss from AP (missed %d beacons) - probing\n", |
2324 | beacon_loss_count); | |
bdcbd8e0 | 2325 | |
98f03342 | 2326 | ieee80211_cqm_beacon_loss_notify(&sdata->vif, GFP_KERNEL); |
a13fbe54 | 2327 | } |
04de8381 | 2328 | |
b291ba11 JB |
2329 | /* |
2330 | * The driver/our work has already reported this event or the | |
2331 | * connection monitoring has kicked in and we have already sent | |
2332 | * a probe request. Or maybe the AP died and the driver keeps | |
2333 | * reporting until we disassociate... | |
2334 | * | |
2335 | * In either case we have to ignore the current call to this | |
2336 | * function (except for setting the correct probe reason bit) | |
2337 | * because otherwise we would reset the timer every time and | |
2338 | * never check whether we received a probe response! | |
2339 | */ | |
392b9ffb | 2340 | if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL) |
b291ba11 JB |
2341 | already = true; |
2342 | ||
12b5f34d EP |
2343 | ifmgd->flags |= IEEE80211_STA_CONNECTION_POLL; |
2344 | ||
133d40f9 SG |
2345 | mutex_unlock(&sdata->local->mtx); |
2346 | ||
b291ba11 JB |
2347 | if (already) |
2348 | goto out; | |
2349 | ||
4e751843 JB |
2350 | mutex_lock(&sdata->local->iflist_mtx); |
2351 | ieee80211_recalc_ps(sdata->local, -1); | |
2352 | mutex_unlock(&sdata->local->iflist_mtx); | |
2353 | ||
a43abf29 ML |
2354 | ifmgd->probe_send_count = 0; |
2355 | ieee80211_mgd_probe_ap_send(sdata); | |
77fdaa12 | 2356 | out: |
8d61ffa5 | 2357 | sdata_unlock(sdata); |
04de8381 KV |
2358 | } |
2359 | ||
a619a4c0 JO |
2360 | struct sk_buff *ieee80211_ap_probereq_get(struct ieee80211_hw *hw, |
2361 | struct ieee80211_vif *vif) | |
2362 | { | |
2363 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
2364 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
d9b3b28b | 2365 | struct cfg80211_bss *cbss; |
a619a4c0 JO |
2366 | struct sk_buff *skb; |
2367 | const u8 *ssid; | |
88c868c4 | 2368 | int ssid_len; |
a619a4c0 JO |
2369 | |
2370 | if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION)) | |
2371 | return NULL; | |
2372 | ||
8d61ffa5 | 2373 | sdata_assert_lock(sdata); |
a619a4c0 | 2374 | |
d9b3b28b EP |
2375 | if (ifmgd->associated) |
2376 | cbss = ifmgd->associated; | |
2377 | else if (ifmgd->auth_data) | |
2378 | cbss = ifmgd->auth_data->bss; | |
2379 | else if (ifmgd->assoc_data) | |
2380 | cbss = ifmgd->assoc_data->bss; | |
2381 | else | |
a619a4c0 JO |
2382 | return NULL; |
2383 | ||
9caf0364 | 2384 | rcu_read_lock(); |
d9b3b28b | 2385 | ssid = ieee80211_bss_get_ie(cbss, WLAN_EID_SSID); |
88c868c4 SG |
2386 | if (WARN_ON_ONCE(ssid == NULL)) |
2387 | ssid_len = 0; | |
2388 | else | |
2389 | ssid_len = ssid[1]; | |
2390 | ||
a344d677 | 2391 | skb = ieee80211_build_probe_req(sdata, sdata->vif.addr, cbss->bssid, |
55de908a | 2392 | (u32) -1, cbss->channel, |
6b77863b | 2393 | ssid + 2, ssid_len, |
85a237fe | 2394 | NULL, 0, true); |
9caf0364 | 2395 | rcu_read_unlock(); |
a619a4c0 JO |
2396 | |
2397 | return skb; | |
2398 | } | |
2399 | EXPORT_SYMBOL(ieee80211_ap_probereq_get); | |
2400 | ||
a90faa9d EG |
2401 | static void ieee80211_report_disconnect(struct ieee80211_sub_if_data *sdata, |
2402 | const u8 *buf, size_t len, bool tx, | |
2403 | u16 reason) | |
2404 | { | |
2405 | struct ieee80211_event event = { | |
2406 | .type = MLME_EVENT, | |
2407 | .u.mlme.data = tx ? DEAUTH_TX_EVENT : DEAUTH_RX_EVENT, | |
2408 | .u.mlme.reason = reason, | |
2409 | }; | |
2410 | ||
2411 | if (tx) | |
2412 | cfg80211_tx_mlme_mgmt(sdata->dev, buf, len); | |
2413 | else | |
2414 | cfg80211_rx_mlme_mgmt(sdata->dev, buf, len); | |
2415 | ||
2416 | drv_event_callback(sdata->local, sdata, &event); | |
2417 | } | |
2418 | ||
eef9e54c | 2419 | static void __ieee80211_disconnect(struct ieee80211_sub_if_data *sdata) |
1e4dcd01 | 2420 | { |
59af6928 | 2421 | struct ieee80211_local *local = sdata->local; |
1e4dcd01 | 2422 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
6ae16775 | 2423 | u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN]; |
1e4dcd01 | 2424 | |
8d61ffa5 | 2425 | sdata_lock(sdata); |
1e4dcd01 | 2426 | if (!ifmgd->associated) { |
8d61ffa5 | 2427 | sdata_unlock(sdata); |
1e4dcd01 JO |
2428 | return; |
2429 | } | |
2430 | ||
37ad3888 JB |
2431 | ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, |
2432 | WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, | |
eef9e54c | 2433 | true, frame_buf); |
59af6928 | 2434 | mutex_lock(&local->mtx); |
7578d575 | 2435 | sdata->vif.csa_active = false; |
0c21e632 | 2436 | ifmgd->csa_waiting_bcn = false; |
a46992b4 LC |
2437 | if (sdata->csa_block_tx) { |
2438 | ieee80211_wake_vif_queues(local, sdata, | |
2439 | IEEE80211_QUEUE_STOP_REASON_CSA); | |
2440 | sdata->csa_block_tx = false; | |
2441 | } | |
59af6928 | 2442 | mutex_unlock(&local->mtx); |
7da7cc1d | 2443 | |
a90faa9d EG |
2444 | ieee80211_report_disconnect(sdata, frame_buf, sizeof(frame_buf), true, |
2445 | WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY); | |
2446 | ||
8d61ffa5 | 2447 | sdata_unlock(sdata); |
1e4dcd01 JO |
2448 | } |
2449 | ||
cc74c0c7 | 2450 | static void ieee80211_beacon_connection_loss_work(struct work_struct *work) |
b291ba11 JB |
2451 | { |
2452 | struct ieee80211_sub_if_data *sdata = | |
2453 | container_of(work, struct ieee80211_sub_if_data, | |
1e4dcd01 | 2454 | u.mgd.beacon_connection_loss_work); |
a85e1d55 PS |
2455 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
2456 | struct sta_info *sta; | |
2457 | ||
2458 | if (ifmgd->associated) { | |
30fa9047 | 2459 | rcu_read_lock(); |
a85e1d55 PS |
2460 | sta = sta_info_get(sdata, ifmgd->bssid); |
2461 | if (sta) | |
2462 | sta->beacon_loss_count++; | |
30fa9047 | 2463 | rcu_read_unlock(); |
a85e1d55 | 2464 | } |
b291ba11 | 2465 | |
682bd38b | 2466 | if (ifmgd->connection_loss) { |
882a7c69 JB |
2467 | sdata_info(sdata, "Connection to AP %pM lost\n", |
2468 | ifmgd->bssid); | |
eef9e54c | 2469 | __ieee80211_disconnect(sdata); |
882a7c69 | 2470 | } else { |
1e4dcd01 | 2471 | ieee80211_mgd_probe_ap(sdata, true); |
882a7c69 JB |
2472 | } |
2473 | } | |
2474 | ||
2475 | static void ieee80211_csa_connection_drop_work(struct work_struct *work) | |
2476 | { | |
2477 | struct ieee80211_sub_if_data *sdata = | |
2478 | container_of(work, struct ieee80211_sub_if_data, | |
2479 | u.mgd.csa_connection_drop_work); | |
2480 | ||
eef9e54c | 2481 | __ieee80211_disconnect(sdata); |
b291ba11 JB |
2482 | } |
2483 | ||
04de8381 KV |
2484 | void ieee80211_beacon_loss(struct ieee80211_vif *vif) |
2485 | { | |
2486 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
1e4dcd01 | 2487 | struct ieee80211_hw *hw = &sdata->local->hw; |
04de8381 | 2488 | |
b5878a2d JB |
2489 | trace_api_beacon_loss(sdata); |
2490 | ||
682bd38b | 2491 | sdata->u.mgd.connection_loss = false; |
1e4dcd01 | 2492 | ieee80211_queue_work(hw, &sdata->u.mgd.beacon_connection_loss_work); |
04de8381 KV |
2493 | } |
2494 | EXPORT_SYMBOL(ieee80211_beacon_loss); | |
2495 | ||
1e4dcd01 JO |
2496 | void ieee80211_connection_loss(struct ieee80211_vif *vif) |
2497 | { | |
2498 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
2499 | struct ieee80211_hw *hw = &sdata->local->hw; | |
2500 | ||
b5878a2d JB |
2501 | trace_api_connection_loss(sdata); |
2502 | ||
682bd38b | 2503 | sdata->u.mgd.connection_loss = true; |
1e4dcd01 JO |
2504 | ieee80211_queue_work(hw, &sdata->u.mgd.beacon_connection_loss_work); |
2505 | } | |
2506 | EXPORT_SYMBOL(ieee80211_connection_loss); | |
2507 | ||
2508 | ||
66e67e41 JB |
2509 | static void ieee80211_destroy_auth_data(struct ieee80211_sub_if_data *sdata, |
2510 | bool assoc) | |
2511 | { | |
2512 | struct ieee80211_mgd_auth_data *auth_data = sdata->u.mgd.auth_data; | |
2513 | ||
8d61ffa5 | 2514 | sdata_assert_lock(sdata); |
66e67e41 | 2515 | |
66e67e41 | 2516 | if (!assoc) { |
c1e140bf EG |
2517 | /* |
2518 | * we are not authenticated yet, the only timer that could be | |
2519 | * running is the timeout for the authentication response which | |
2520 | * which is not relevant anymore. | |
2521 | */ | |
2522 | del_timer_sync(&sdata->u.mgd.timer); | |
66e67e41 JB |
2523 | sta_info_destroy_addr(sdata, auth_data->bss->bssid); |
2524 | ||
c84a67a2 | 2525 | eth_zero_addr(sdata->u.mgd.bssid); |
66e67e41 | 2526 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID); |
028e8da0 | 2527 | sdata->u.mgd.flags = 0; |
34a3740d | 2528 | mutex_lock(&sdata->local->mtx); |
55de908a | 2529 | ieee80211_vif_release_channel(sdata); |
34a3740d | 2530 | mutex_unlock(&sdata->local->mtx); |
66e67e41 JB |
2531 | } |
2532 | ||
5b112d3d | 2533 | cfg80211_put_bss(sdata->local->hw.wiphy, auth_data->bss); |
66e67e41 JB |
2534 | kfree(auth_data); |
2535 | sdata->u.mgd.auth_data = NULL; | |
2536 | } | |
2537 | ||
c9c99f89 JB |
2538 | static void ieee80211_destroy_assoc_data(struct ieee80211_sub_if_data *sdata, |
2539 | bool assoc) | |
2540 | { | |
2541 | struct ieee80211_mgd_assoc_data *assoc_data = sdata->u.mgd.assoc_data; | |
2542 | ||
2543 | sdata_assert_lock(sdata); | |
2544 | ||
2545 | if (!assoc) { | |
2546 | /* | |
2547 | * we are not associated yet, the only timer that could be | |
2548 | * running is the timeout for the association response which | |
2549 | * which is not relevant anymore. | |
2550 | */ | |
2551 | del_timer_sync(&sdata->u.mgd.timer); | |
2552 | sta_info_destroy_addr(sdata, assoc_data->bss->bssid); | |
2553 | ||
2554 | eth_zero_addr(sdata->u.mgd.bssid); | |
2555 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID); | |
2556 | sdata->u.mgd.flags = 0; | |
322cd406 | 2557 | sdata->flags &= ~IEEE80211_SDATA_MU_MIMO_OWNER; |
c9c99f89 JB |
2558 | mutex_lock(&sdata->local->mtx); |
2559 | ieee80211_vif_release_channel(sdata); | |
2560 | mutex_unlock(&sdata->local->mtx); | |
2561 | } | |
2562 | ||
2563 | kfree(assoc_data); | |
2564 | sdata->u.mgd.assoc_data = NULL; | |
2565 | } | |
2566 | ||
66e67e41 JB |
2567 | static void ieee80211_auth_challenge(struct ieee80211_sub_if_data *sdata, |
2568 | struct ieee80211_mgmt *mgmt, size_t len) | |
2569 | { | |
1672c0e3 | 2570 | struct ieee80211_local *local = sdata->local; |
66e67e41 JB |
2571 | struct ieee80211_mgd_auth_data *auth_data = sdata->u.mgd.auth_data; |
2572 | u8 *pos; | |
2573 | struct ieee802_11_elems elems; | |
1672c0e3 | 2574 | u32 tx_flags = 0; |
66e67e41 JB |
2575 | |
2576 | pos = mgmt->u.auth.variable; | |
b2e506bf | 2577 | ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), false, &elems); |
66e67e41 JB |
2578 | if (!elems.challenge) |
2579 | return; | |
2580 | auth_data->expected_transaction = 4; | |
a1845fc7 | 2581 | drv_mgd_prepare_tx(sdata->local, sdata); |
30686bf7 | 2582 | if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) |
1672c0e3 JB |
2583 | tx_flags = IEEE80211_TX_CTL_REQ_TX_STATUS | |
2584 | IEEE80211_TX_INTFL_MLME_CONN_TX; | |
700e8ea6 | 2585 | ieee80211_send_auth(sdata, 3, auth_data->algorithm, 0, |
66e67e41 JB |
2586 | elems.challenge - 2, elems.challenge_len + 2, |
2587 | auth_data->bss->bssid, auth_data->bss->bssid, | |
2588 | auth_data->key, auth_data->key_len, | |
1672c0e3 | 2589 | auth_data->key_idx, tx_flags); |
66e67e41 JB |
2590 | } |
2591 | ||
8d61ffa5 JB |
2592 | static void ieee80211_rx_mgmt_auth(struct ieee80211_sub_if_data *sdata, |
2593 | struct ieee80211_mgmt *mgmt, size_t len) | |
66e67e41 JB |
2594 | { |
2595 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
2596 | u8 bssid[ETH_ALEN]; | |
2597 | u16 auth_alg, auth_transaction, status_code; | |
2598 | struct sta_info *sta; | |
a9409093 EG |
2599 | struct ieee80211_event event = { |
2600 | .type = MLME_EVENT, | |
2601 | .u.mlme.data = AUTH_EVENT, | |
2602 | }; | |
66e67e41 | 2603 | |
8d61ffa5 | 2604 | sdata_assert_lock(sdata); |
66e67e41 JB |
2605 | |
2606 | if (len < 24 + 6) | |
8d61ffa5 | 2607 | return; |
66e67e41 JB |
2608 | |
2609 | if (!ifmgd->auth_data || ifmgd->auth_data->done) | |
8d61ffa5 | 2610 | return; |
66e67e41 JB |
2611 | |
2612 | memcpy(bssid, ifmgd->auth_data->bss->bssid, ETH_ALEN); | |
2613 | ||
b203ca39 | 2614 | if (!ether_addr_equal(bssid, mgmt->bssid)) |
8d61ffa5 | 2615 | return; |
66e67e41 JB |
2616 | |
2617 | auth_alg = le16_to_cpu(mgmt->u.auth.auth_alg); | |
2618 | auth_transaction = le16_to_cpu(mgmt->u.auth.auth_transaction); | |
2619 | status_code = le16_to_cpu(mgmt->u.auth.status_code); | |
2620 | ||
2621 | if (auth_alg != ifmgd->auth_data->algorithm || | |
0f4126e8 JM |
2622 | auth_transaction != ifmgd->auth_data->expected_transaction) { |
2623 | sdata_info(sdata, "%pM unexpected authentication state: alg %d (expected %d) transact %d (expected %d)\n", | |
2624 | mgmt->sa, auth_alg, ifmgd->auth_data->algorithm, | |
2625 | auth_transaction, | |
2626 | ifmgd->auth_data->expected_transaction); | |
8d61ffa5 | 2627 | return; |
0f4126e8 | 2628 | } |
66e67e41 JB |
2629 | |
2630 | if (status_code != WLAN_STATUS_SUCCESS) { | |
bdcbd8e0 JB |
2631 | sdata_info(sdata, "%pM denied authentication (status %d)\n", |
2632 | mgmt->sa, status_code); | |
dac211ec | 2633 | ieee80211_destroy_auth_data(sdata, false); |
6ff57cf8 | 2634 | cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len); |
a9409093 EG |
2635 | event.u.mlme.status = MLME_DENIED; |
2636 | event.u.mlme.reason = status_code; | |
2637 | drv_event_callback(sdata->local, sdata, &event); | |
8d61ffa5 | 2638 | return; |
66e67e41 JB |
2639 | } |
2640 | ||
2641 | switch (ifmgd->auth_data->algorithm) { | |
2642 | case WLAN_AUTH_OPEN: | |
2643 | case WLAN_AUTH_LEAP: | |
2644 | case WLAN_AUTH_FT: | |
6b8ece3a | 2645 | case WLAN_AUTH_SAE: |
66e67e41 JB |
2646 | break; |
2647 | case WLAN_AUTH_SHARED_KEY: | |
2648 | if (ifmgd->auth_data->expected_transaction != 4) { | |
2649 | ieee80211_auth_challenge(sdata, mgmt, len); | |
2650 | /* need another frame */ | |
8d61ffa5 | 2651 | return; |
66e67e41 JB |
2652 | } |
2653 | break; | |
2654 | default: | |
2655 | WARN_ONCE(1, "invalid auth alg %d", | |
2656 | ifmgd->auth_data->algorithm); | |
8d61ffa5 | 2657 | return; |
66e67e41 JB |
2658 | } |
2659 | ||
a9409093 EG |
2660 | event.u.mlme.status = MLME_SUCCESS; |
2661 | drv_event_callback(sdata->local, sdata, &event); | |
bdcbd8e0 | 2662 | sdata_info(sdata, "authenticated\n"); |
66e67e41 JB |
2663 | ifmgd->auth_data->done = true; |
2664 | ifmgd->auth_data->timeout = jiffies + IEEE80211_AUTH_WAIT_ASSOC; | |
89afe614 | 2665 | ifmgd->auth_data->timeout_started = true; |
8d61ffa5 | 2666 | run_again(sdata, ifmgd->auth_data->timeout); |
66e67e41 | 2667 | |
6b8ece3a JM |
2668 | if (ifmgd->auth_data->algorithm == WLAN_AUTH_SAE && |
2669 | ifmgd->auth_data->expected_transaction != 2) { | |
2670 | /* | |
2671 | * Report auth frame to user space for processing since another | |
2672 | * round of Authentication frames is still needed. | |
2673 | */ | |
6ff57cf8 | 2674 | cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len); |
8d61ffa5 | 2675 | return; |
6b8ece3a JM |
2676 | } |
2677 | ||
66e67e41 JB |
2678 | /* move station state to auth */ |
2679 | mutex_lock(&sdata->local->sta_mtx); | |
2680 | sta = sta_info_get(sdata, bssid); | |
2681 | if (!sta) { | |
2682 | WARN_ONCE(1, "%s: STA %pM not found", sdata->name, bssid); | |
2683 | goto out_err; | |
2684 | } | |
2685 | if (sta_info_move_state(sta, IEEE80211_STA_AUTH)) { | |
bdcbd8e0 | 2686 | sdata_info(sdata, "failed moving %pM to auth\n", bssid); |
66e67e41 JB |
2687 | goto out_err; |
2688 | } | |
2689 | mutex_unlock(&sdata->local->sta_mtx); | |
2690 | ||
6ff57cf8 | 2691 | cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len); |
8d61ffa5 | 2692 | return; |
66e67e41 JB |
2693 | out_err: |
2694 | mutex_unlock(&sdata->local->sta_mtx); | |
2695 | /* ignore frame -- wait for timeout */ | |
66e67e41 JB |
2696 | } |
2697 | ||
dfa1ad29 CO |
2698 | #define case_WLAN(type) \ |
2699 | case WLAN_REASON_##type: return #type | |
2700 | ||
2701 | static const char *ieee80211_get_reason_code_string(u16 reason_code) | |
2702 | { | |
2703 | switch (reason_code) { | |
2704 | case_WLAN(UNSPECIFIED); | |
2705 | case_WLAN(PREV_AUTH_NOT_VALID); | |
2706 | case_WLAN(DEAUTH_LEAVING); | |
2707 | case_WLAN(DISASSOC_DUE_TO_INACTIVITY); | |
2708 | case_WLAN(DISASSOC_AP_BUSY); | |
2709 | case_WLAN(CLASS2_FRAME_FROM_NONAUTH_STA); | |
2710 | case_WLAN(CLASS3_FRAME_FROM_NONASSOC_STA); | |
2711 | case_WLAN(DISASSOC_STA_HAS_LEFT); | |
2712 | case_WLAN(STA_REQ_ASSOC_WITHOUT_AUTH); | |
2713 | case_WLAN(DISASSOC_BAD_POWER); | |
2714 | case_WLAN(DISASSOC_BAD_SUPP_CHAN); | |
2715 | case_WLAN(INVALID_IE); | |
2716 | case_WLAN(MIC_FAILURE); | |
2717 | case_WLAN(4WAY_HANDSHAKE_TIMEOUT); | |
2718 | case_WLAN(GROUP_KEY_HANDSHAKE_TIMEOUT); | |
2719 | case_WLAN(IE_DIFFERENT); | |
2720 | case_WLAN(INVALID_GROUP_CIPHER); | |
2721 | case_WLAN(INVALID_PAIRWISE_CIPHER); | |
2722 | case_WLAN(INVALID_AKMP); | |
2723 | case_WLAN(UNSUPP_RSN_VERSION); | |
2724 | case_WLAN(INVALID_RSN_IE_CAP); | |
2725 | case_WLAN(IEEE8021X_FAILED); | |
2726 | case_WLAN(CIPHER_SUITE_REJECTED); | |
2727 | case_WLAN(DISASSOC_UNSPECIFIED_QOS); | |
2728 | case_WLAN(DISASSOC_QAP_NO_BANDWIDTH); | |
2729 | case_WLAN(DISASSOC_LOW_ACK); | |
2730 | case_WLAN(DISASSOC_QAP_EXCEED_TXOP); | |
2731 | case_WLAN(QSTA_LEAVE_QBSS); | |
2732 | case_WLAN(QSTA_NOT_USE); | |
2733 | case_WLAN(QSTA_REQUIRE_SETUP); | |
2734 | case_WLAN(QSTA_TIMEOUT); | |
2735 | case_WLAN(QSTA_CIPHER_NOT_SUPP); | |
2736 | case_WLAN(MESH_PEER_CANCELED); | |
2737 | case_WLAN(MESH_MAX_PEERS); | |
2738 | case_WLAN(MESH_CONFIG); | |
2739 | case_WLAN(MESH_CLOSE); | |
2740 | case_WLAN(MESH_MAX_RETRIES); | |
2741 | case_WLAN(MESH_CONFIRM_TIMEOUT); | |
2742 | case_WLAN(MESH_INVALID_GTK); | |
2743 | case_WLAN(MESH_INCONSISTENT_PARAM); | |
2744 | case_WLAN(MESH_INVALID_SECURITY); | |
2745 | case_WLAN(MESH_PATH_ERROR); | |
2746 | case_WLAN(MESH_PATH_NOFORWARD); | |
2747 | case_WLAN(MESH_PATH_DEST_UNREACHABLE); | |
2748 | case_WLAN(MAC_EXISTS_IN_MBSS); | |
2749 | case_WLAN(MESH_CHAN_REGULATORY); | |
2750 | case_WLAN(MESH_CHAN); | |
2751 | default: return "<unknown>"; | |
2752 | } | |
2753 | } | |
66e67e41 | 2754 | |
8d61ffa5 JB |
2755 | static void ieee80211_rx_mgmt_deauth(struct ieee80211_sub_if_data *sdata, |
2756 | struct ieee80211_mgmt *mgmt, size_t len) | |
f0706e82 | 2757 | { |
46900298 | 2758 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
c9c99f89 | 2759 | u16 reason_code = le16_to_cpu(mgmt->u.deauth.reason_code); |
f0706e82 | 2760 | |
8d61ffa5 | 2761 | sdata_assert_lock(sdata); |
66e67e41 | 2762 | |
f4ea83dd | 2763 | if (len < 24 + 2) |
8d61ffa5 | 2764 | return; |
f0706e82 | 2765 | |
c9c99f89 JB |
2766 | if (ifmgd->associated && |
2767 | ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid)) { | |
2768 | const u8 *bssid = ifmgd->associated->bssid; | |
77fdaa12 | 2769 | |
c9c99f89 JB |
2770 | sdata_info(sdata, "deauthenticated from %pM (Reason: %u=%s)\n", |
2771 | bssid, reason_code, | |
2772 | ieee80211_get_reason_code_string(reason_code)); | |
f0706e82 | 2773 | |
c9c99f89 | 2774 | ieee80211_set_disassoc(sdata, 0, 0, false, NULL); |
f0706e82 | 2775 | |
c9c99f89 JB |
2776 | ieee80211_report_disconnect(sdata, (u8 *)mgmt, len, false, |
2777 | reason_code); | |
2778 | return; | |
2779 | } | |
77fdaa12 | 2780 | |
c9c99f89 JB |
2781 | if (ifmgd->assoc_data && |
2782 | ether_addr_equal(mgmt->bssid, ifmgd->assoc_data->bss->bssid)) { | |
2783 | const u8 *bssid = ifmgd->assoc_data->bss->bssid; | |
37ad3888 | 2784 | |
c9c99f89 JB |
2785 | sdata_info(sdata, |
2786 | "deauthenticated from %pM while associating (Reason: %u=%s)\n", | |
2787 | bssid, reason_code, | |
2788 | ieee80211_get_reason_code_string(reason_code)); | |
2789 | ||
2790 | ieee80211_destroy_assoc_data(sdata, false); | |
2791 | ||
2792 | cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len); | |
2793 | return; | |
2794 | } | |
f0706e82 JB |
2795 | } |
2796 | ||
2797 | ||
8d61ffa5 JB |
2798 | static void ieee80211_rx_mgmt_disassoc(struct ieee80211_sub_if_data *sdata, |
2799 | struct ieee80211_mgmt *mgmt, size_t len) | |
f0706e82 | 2800 | { |
46900298 | 2801 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
f0706e82 JB |
2802 | u16 reason_code; |
2803 | ||
8d61ffa5 | 2804 | sdata_assert_lock(sdata); |
77fdaa12 | 2805 | |
66e67e41 | 2806 | if (len < 24 + 2) |
8d61ffa5 | 2807 | return; |
77fdaa12 | 2808 | |
66e67e41 | 2809 | if (!ifmgd->associated || |
b203ca39 | 2810 | !ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid)) |
8d61ffa5 | 2811 | return; |
f0706e82 JB |
2812 | |
2813 | reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code); | |
2814 | ||
bdcbd8e0 JB |
2815 | sdata_info(sdata, "disassociated from %pM (Reason: %u)\n", |
2816 | mgmt->sa, reason_code); | |
f0706e82 | 2817 | |
37ad3888 JB |
2818 | ieee80211_set_disassoc(sdata, 0, 0, false, NULL); |
2819 | ||
a90faa9d | 2820 | ieee80211_report_disconnect(sdata, (u8 *)mgmt, len, false, reason_code); |
f0706e82 JB |
2821 | } |
2822 | ||
c74d084f CL |
2823 | static void ieee80211_get_rates(struct ieee80211_supported_band *sband, |
2824 | u8 *supp_rates, unsigned int supp_rates_len, | |
2825 | u32 *rates, u32 *basic_rates, | |
2826 | bool *have_higher_than_11mbit, | |
2103dec1 SW |
2827 | int *min_rate, int *min_rate_index, |
2828 | int shift, u32 rate_flags) | |
c74d084f CL |
2829 | { |
2830 | int i, j; | |
2831 | ||
2832 | for (i = 0; i < supp_rates_len; i++) { | |
2103dec1 | 2833 | int rate = supp_rates[i] & 0x7f; |
c74d084f CL |
2834 | bool is_basic = !!(supp_rates[i] & 0x80); |
2835 | ||
2103dec1 | 2836 | if ((rate * 5 * (1 << shift)) > 110) |
c74d084f CL |
2837 | *have_higher_than_11mbit = true; |
2838 | ||
2839 | /* | |
2840 | * BSS_MEMBERSHIP_SELECTOR_HT_PHY is defined in 802.11n-2009 | |
2841 | * 7.3.2.2 as a magic value instead of a rate. Hence, skip it. | |
2842 | * | |
2843 | * Note: Even through the membership selector and the basic | |
2844 | * rate flag share the same bit, they are not exactly | |
2845 | * the same. | |
2846 | */ | |
2847 | if (!!(supp_rates[i] & 0x80) && | |
2848 | (supp_rates[i] & 0x7f) == BSS_MEMBERSHIP_SELECTOR_HT_PHY) | |
2849 | continue; | |
2850 | ||
2851 | for (j = 0; j < sband->n_bitrates; j++) { | |
2103dec1 SW |
2852 | struct ieee80211_rate *br; |
2853 | int brate; | |
2854 | ||
2855 | br = &sband->bitrates[j]; | |
2856 | if ((rate_flags & br->flags) != rate_flags) | |
2857 | continue; | |
2858 | ||
2859 | brate = DIV_ROUND_UP(br->bitrate, (1 << shift) * 5); | |
2860 | if (brate == rate) { | |
c74d084f CL |
2861 | *rates |= BIT(j); |
2862 | if (is_basic) | |
2863 | *basic_rates |= BIT(j); | |
2103dec1 SW |
2864 | if ((rate * 5) < *min_rate) { |
2865 | *min_rate = rate * 5; | |
c74d084f CL |
2866 | *min_rate_index = j; |
2867 | } | |
2868 | break; | |
2869 | } | |
2870 | } | |
2871 | } | |
2872 | } | |
f0706e82 | 2873 | |
66e67e41 JB |
2874 | static bool ieee80211_assoc_success(struct ieee80211_sub_if_data *sdata, |
2875 | struct cfg80211_bss *cbss, | |
af6b6374 | 2876 | struct ieee80211_mgmt *mgmt, size_t len) |
f0706e82 | 2877 | { |
46900298 | 2878 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
471b3efd | 2879 | struct ieee80211_local *local = sdata->local; |
8318d78a | 2880 | struct ieee80211_supported_band *sband; |
f0706e82 | 2881 | struct sta_info *sta; |
af6b6374 | 2882 | u8 *pos; |
af6b6374 | 2883 | u16 capab_info, aid; |
f0706e82 | 2884 | struct ieee802_11_elems elems; |
bda3933a | 2885 | struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf; |
35d865af JB |
2886 | const struct cfg80211_bss_ies *bss_ies = NULL; |
2887 | struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data; | |
ae5eb026 | 2888 | u32 changed = 0; |
c74d084f | 2889 | int err; |
35d865af | 2890 | bool ret; |
f0706e82 | 2891 | |
af6b6374 | 2892 | /* AssocResp and ReassocResp have identical structure */ |
f0706e82 | 2893 | |
f0706e82 | 2894 | aid = le16_to_cpu(mgmt->u.assoc_resp.aid); |
af6b6374 | 2895 | capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info); |
f0706e82 | 2896 | |
1dd84aa2 | 2897 | if ((aid & (BIT(15) | BIT(14))) != (BIT(15) | BIT(14))) |
bdcbd8e0 JB |
2898 | sdata_info(sdata, "invalid AID value 0x%x; bits 15:14 not set\n", |
2899 | aid); | |
1dd84aa2 JB |
2900 | aid &= ~(BIT(15) | BIT(14)); |
2901 | ||
05cb9108 JB |
2902 | ifmgd->broken_ap = false; |
2903 | ||
2904 | if (aid == 0 || aid > IEEE80211_MAX_AID) { | |
bdcbd8e0 JB |
2905 | sdata_info(sdata, "invalid AID value %d (out of range), turn off PS\n", |
2906 | aid); | |
05cb9108 JB |
2907 | aid = 0; |
2908 | ifmgd->broken_ap = true; | |
2909 | } | |
2910 | ||
af6b6374 | 2911 | pos = mgmt->u.assoc_resp.variable; |
b2e506bf | 2912 | ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), false, &elems); |
af6b6374 | 2913 | |
f0706e82 | 2914 | if (!elems.supp_rates) { |
bdcbd8e0 | 2915 | sdata_info(sdata, "no SuppRates element in AssocResp\n"); |
af6b6374 | 2916 | return false; |
f0706e82 JB |
2917 | } |
2918 | ||
46900298 | 2919 | ifmgd->aid = aid; |
9041c1fa AN |
2920 | ifmgd->tdls_chan_switch_prohibited = |
2921 | elems.ext_capab && elems.ext_capab_len >= 5 && | |
2922 | (elems.ext_capab[4] & WLAN_EXT_CAPA5_TDLS_CH_SW_PROHIBITED); | |
f0706e82 | 2923 | |
35d865af JB |
2924 | /* |
2925 | * Some APs are erroneously not including some information in their | |
2926 | * (re)association response frames. Try to recover by using the data | |
2927 | * from the beacon or probe response. This seems to afflict mobile | |
2928 | * 2G/3G/4G wifi routers, reported models include the "Onda PN51T", | |
2929 | * "Vodafone PocketWiFi 2", "ZTE MF60" and a similar T-Mobile device. | |
2930 | */ | |
2931 | if ((assoc_data->wmm && !elems.wmm_param) || | |
2932 | (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT) && | |
2933 | (!elems.ht_cap_elem || !elems.ht_operation)) || | |
2934 | (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) && | |
2935 | (!elems.vht_cap_elem || !elems.vht_operation))) { | |
2936 | const struct cfg80211_bss_ies *ies; | |
2937 | struct ieee802_11_elems bss_elems; | |
2938 | ||
2939 | rcu_read_lock(); | |
2940 | ies = rcu_dereference(cbss->ies); | |
2941 | if (ies) | |
2942 | bss_ies = kmemdup(ies, sizeof(*ies) + ies->len, | |
2943 | GFP_ATOMIC); | |
2944 | rcu_read_unlock(); | |
2945 | if (!bss_ies) | |
2946 | return false; | |
2947 | ||
2948 | ieee802_11_parse_elems(bss_ies->data, bss_ies->len, | |
2949 | false, &bss_elems); | |
2950 | if (assoc_data->wmm && | |
2951 | !elems.wmm_param && bss_elems.wmm_param) { | |
2952 | elems.wmm_param = bss_elems.wmm_param; | |
2953 | sdata_info(sdata, | |
2954 | "AP bug: WMM param missing from AssocResp\n"); | |
2955 | } | |
2956 | ||
2957 | /* | |
2958 | * Also check if we requested HT/VHT, otherwise the AP doesn't | |
2959 | * have to include the IEs in the (re)association response. | |
2960 | */ | |
2961 | if (!elems.ht_cap_elem && bss_elems.ht_cap_elem && | |
2962 | !(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) { | |
2963 | elems.ht_cap_elem = bss_elems.ht_cap_elem; | |
2964 | sdata_info(sdata, | |
2965 | "AP bug: HT capability missing from AssocResp\n"); | |
2966 | } | |
2967 | if (!elems.ht_operation && bss_elems.ht_operation && | |
2968 | !(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) { | |
2969 | elems.ht_operation = bss_elems.ht_operation; | |
2970 | sdata_info(sdata, | |
2971 | "AP bug: HT operation missing from AssocResp\n"); | |
2972 | } | |
2973 | if (!elems.vht_cap_elem && bss_elems.vht_cap_elem && | |
2974 | !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) { | |
2975 | elems.vht_cap_elem = bss_elems.vht_cap_elem; | |
2976 | sdata_info(sdata, | |
2977 | "AP bug: VHT capa missing from AssocResp\n"); | |
2978 | } | |
2979 | if (!elems.vht_operation && bss_elems.vht_operation && | |
2980 | !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) { | |
2981 | elems.vht_operation = bss_elems.vht_operation; | |
2982 | sdata_info(sdata, | |
2983 | "AP bug: VHT operation missing from AssocResp\n"); | |
2984 | } | |
2985 | } | |
2986 | ||
30eb1dc2 JB |
2987 | /* |
2988 | * We previously checked these in the beacon/probe response, so | |
2989 | * they should be present here. This is just a safety net. | |
2990 | */ | |
2991 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT) && | |
2992 | (!elems.wmm_param || !elems.ht_cap_elem || !elems.ht_operation)) { | |
2993 | sdata_info(sdata, | |
35d865af JB |
2994 | "HT AP is missing WMM params or HT capability/operation\n"); |
2995 | ret = false; | |
2996 | goto out; | |
30eb1dc2 JB |
2997 | } |
2998 | ||
2999 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) && | |
3000 | (!elems.vht_cap_elem || !elems.vht_operation)) { | |
3001 | sdata_info(sdata, | |
35d865af JB |
3002 | "VHT AP is missing VHT capability/operation\n"); |
3003 | ret = false; | |
3004 | goto out; | |
30eb1dc2 JB |
3005 | } |
3006 | ||
2a33bee2 GE |
3007 | mutex_lock(&sdata->local->sta_mtx); |
3008 | /* | |
3009 | * station info was already allocated and inserted before | |
3010 | * the association and should be available to us | |
3011 | */ | |
7852e361 | 3012 | sta = sta_info_get(sdata, cbss->bssid); |
2a33bee2 GE |
3013 | if (WARN_ON(!sta)) { |
3014 | mutex_unlock(&sdata->local->sta_mtx); | |
35d865af JB |
3015 | ret = false; |
3016 | goto out; | |
77fdaa12 | 3017 | } |
05e5e883 | 3018 | |
55de908a | 3019 | sband = local->hw.wiphy->bands[ieee80211_get_sdata_band(sdata)]; |
f709fc69 | 3020 | |
30eb1dc2 | 3021 | /* Set up internal HT/VHT capabilities */ |
a8243b72 | 3022 | if (elems.ht_cap_elem && !(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) |
ef96a842 | 3023 | ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband, |
e1a0c6b3 | 3024 | elems.ht_cap_elem, sta); |
64f68e5d | 3025 | |
818255ea MP |
3026 | if (elems.vht_cap_elem && !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) |
3027 | ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband, | |
4a34215e | 3028 | elems.vht_cap_elem, sta); |
818255ea | 3029 | |
30eb1dc2 JB |
3030 | /* |
3031 | * Some APs, e.g. Netgear WNDR3700, report invalid HT operation data | |
3032 | * in their association response, so ignore that data for our own | |
3033 | * configuration. If it changed since the last beacon, we'll get the | |
3034 | * next beacon and update then. | |
3035 | */ | |
1128958d | 3036 | |
bee7f586 JB |
3037 | /* |
3038 | * If an operating mode notification IE is present, override the | |
3039 | * NSS calculation (that would be done in rate_control_rate_init()) | |
3040 | * and use the # of streams from that element. | |
3041 | */ | |
3042 | if (elems.opmode_notif && | |
3043 | !(*elems.opmode_notif & IEEE80211_OPMODE_NOTIF_RX_NSS_TYPE_BF)) { | |
3044 | u8 nss; | |
3045 | ||
3046 | nss = *elems.opmode_notif & IEEE80211_OPMODE_NOTIF_RX_NSS_MASK; | |
3047 | nss >>= IEEE80211_OPMODE_NOTIF_RX_NSS_SHIFT; | |
3048 | nss += 1; | |
3049 | sta->sta.rx_nss = nss; | |
3050 | } | |
3051 | ||
4b7679a5 | 3052 | rate_control_rate_init(sta); |
f0706e82 | 3053 | |
5c48f120 | 3054 | if (ifmgd->flags & IEEE80211_STA_MFP_ENABLED) |
c2c98fde | 3055 | set_sta_flag(sta, WLAN_STA_MFP); |
5394af4d | 3056 | |
527871d7 | 3057 | sta->sta.wme = elems.wmm_param && local->hw.queues >= IEEE80211_NUM_ACS; |
ddf4ac53 | 3058 | |
3e4d40fa | 3059 | err = sta_info_move_state(sta, IEEE80211_STA_ASSOC); |
c8987876 JB |
3060 | if (!err && !(ifmgd->flags & IEEE80211_STA_CONTROL_PORT)) |
3061 | err = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED); | |
3062 | if (err) { | |
bdcbd8e0 JB |
3063 | sdata_info(sdata, |
3064 | "failed to move station %pM to desired state\n", | |
3065 | sta->sta.addr); | |
c8987876 JB |
3066 | WARN_ON(__sta_info_destroy(sta)); |
3067 | mutex_unlock(&sdata->local->sta_mtx); | |
35d865af JB |
3068 | ret = false; |
3069 | goto out; | |
c8987876 JB |
3070 | } |
3071 | ||
7852e361 | 3072 | mutex_unlock(&sdata->local->sta_mtx); |
ddf4ac53 | 3073 | |
f2176d72 JO |
3074 | /* |
3075 | * Always handle WMM once after association regardless | |
3076 | * of the first value the AP uses. Setting -1 here has | |
3077 | * that effect because the AP values is an unsigned | |
3078 | * 4-bit value. | |
3079 | */ | |
3080 | ifmgd->wmm_last_param_set = -1; | |
3081 | ||
095d81ce | 3082 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_WMM) && elems.wmm_param) |
4ced3f74 | 3083 | ieee80211_sta_wmm_params(local, sdata, elems.wmm_param, |
60f8b39c | 3084 | elems.wmm_param_len); |
aa837e1d | 3085 | else |
3abead59 JB |
3086 | ieee80211_set_wmm_default(sdata, false); |
3087 | changed |= BSS_CHANGED_QOS; | |
f0706e82 | 3088 | |
60f8b39c JB |
3089 | /* set AID and assoc capability, |
3090 | * ieee80211_set_associated() will tell the driver */ | |
3091 | bss_conf->aid = aid; | |
3092 | bss_conf->assoc_capability = capab_info; | |
0c1ad2ca | 3093 | ieee80211_set_associated(sdata, cbss, changed); |
f0706e82 | 3094 | |
d524215f FF |
3095 | /* |
3096 | * If we're using 4-addr mode, let the AP know that we're | |
3097 | * doing so, so that it can create the STA VLAN on its side | |
3098 | */ | |
3099 | if (ifmgd->use_4addr) | |
3100 | ieee80211_send_4addr_nullfunc(local, sdata); | |
3101 | ||
15b7b062 | 3102 | /* |
b291ba11 JB |
3103 | * Start timer to probe the connection to the AP now. |
3104 | * Also start the timer that will detect beacon loss. | |
15b7b062 | 3105 | */ |
b291ba11 | 3106 | ieee80211_sta_rx_notify(sdata, (struct ieee80211_hdr *)mgmt); |
d3a910a8 | 3107 | ieee80211_sta_reset_beacon_monitor(sdata); |
15b7b062 | 3108 | |
35d865af JB |
3109 | ret = true; |
3110 | out: | |
3111 | kfree(bss_ies); | |
3112 | return ret; | |
f0706e82 JB |
3113 | } |
3114 | ||
8d61ffa5 JB |
3115 | static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata, |
3116 | struct ieee80211_mgmt *mgmt, | |
3117 | size_t len) | |
66e67e41 JB |
3118 | { |
3119 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
3120 | struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data; | |
3121 | u16 capab_info, status_code, aid; | |
3122 | struct ieee802_11_elems elems; | |
b0b6aa2c | 3123 | int ac, uapsd_queues = -1; |
66e67e41 JB |
3124 | u8 *pos; |
3125 | bool reassoc; | |
8d61ffa5 | 3126 | struct cfg80211_bss *bss; |
d0d1a12f EG |
3127 | struct ieee80211_event event = { |
3128 | .type = MLME_EVENT, | |
3129 | .u.mlme.data = ASSOC_EVENT, | |
3130 | }; | |
66e67e41 | 3131 | |
8d61ffa5 | 3132 | sdata_assert_lock(sdata); |
66e67e41 JB |
3133 | |
3134 | if (!assoc_data) | |
8d61ffa5 | 3135 | return; |
b203ca39 | 3136 | if (!ether_addr_equal(assoc_data->bss->bssid, mgmt->bssid)) |
8d61ffa5 | 3137 | return; |
66e67e41 JB |
3138 | |
3139 | /* | |
3140 | * AssocResp and ReassocResp have identical structure, so process both | |
3141 | * of them in this function. | |
3142 | */ | |
3143 | ||
3144 | if (len < 24 + 6) | |
8d61ffa5 | 3145 | return; |
66e67e41 JB |
3146 | |
3147 | reassoc = ieee80211_is_reassoc_req(mgmt->frame_control); | |
3148 | capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info); | |
3149 | status_code = le16_to_cpu(mgmt->u.assoc_resp.status_code); | |
3150 | aid = le16_to_cpu(mgmt->u.assoc_resp.aid); | |
3151 | ||
bdcbd8e0 JB |
3152 | sdata_info(sdata, |
3153 | "RX %sssocResp from %pM (capab=0x%x status=%d aid=%d)\n", | |
3154 | reassoc ? "Rea" : "A", mgmt->sa, | |
3155 | capab_info, status_code, (u16)(aid & ~(BIT(15) | BIT(14)))); | |
66e67e41 JB |
3156 | |
3157 | pos = mgmt->u.assoc_resp.variable; | |
b2e506bf | 3158 | ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), false, &elems); |
66e67e41 JB |
3159 | |
3160 | if (status_code == WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY && | |
79ba1d89 JB |
3161 | elems.timeout_int && |
3162 | elems.timeout_int->type == WLAN_TIMEOUT_ASSOC_COMEBACK) { | |
66e67e41 | 3163 | u32 tu, ms; |
79ba1d89 | 3164 | tu = le32_to_cpu(elems.timeout_int->value); |
66e67e41 | 3165 | ms = tu * 1024 / 1000; |
bdcbd8e0 JB |
3166 | sdata_info(sdata, |
3167 | "%pM rejected association temporarily; comeback duration %u TU (%u ms)\n", | |
3168 | mgmt->sa, tu, ms); | |
66e67e41 | 3169 | assoc_data->timeout = jiffies + msecs_to_jiffies(ms); |
89afe614 | 3170 | assoc_data->timeout_started = true; |
66e67e41 | 3171 | if (ms > IEEE80211_ASSOC_TIMEOUT) |
8d61ffa5 JB |
3172 | run_again(sdata, assoc_data->timeout); |
3173 | return; | |
66e67e41 JB |
3174 | } |
3175 | ||
8d61ffa5 | 3176 | bss = assoc_data->bss; |
66e67e41 JB |
3177 | |
3178 | if (status_code != WLAN_STATUS_SUCCESS) { | |
bdcbd8e0 JB |
3179 | sdata_info(sdata, "%pM denied association (code=%d)\n", |
3180 | mgmt->sa, status_code); | |
66e67e41 | 3181 | ieee80211_destroy_assoc_data(sdata, false); |
d0d1a12f EG |
3182 | event.u.mlme.status = MLME_DENIED; |
3183 | event.u.mlme.reason = status_code; | |
3184 | drv_event_callback(sdata->local, sdata, &event); | |
66e67e41 | 3185 | } else { |
8d61ffa5 | 3186 | if (!ieee80211_assoc_success(sdata, bss, mgmt, len)) { |
66e67e41 | 3187 | /* oops -- internal error -- send timeout for now */ |
10a9109f | 3188 | ieee80211_destroy_assoc_data(sdata, false); |
959867fa | 3189 | cfg80211_assoc_timeout(sdata->dev, bss); |
8d61ffa5 | 3190 | return; |
66e67e41 | 3191 | } |
d0d1a12f EG |
3192 | event.u.mlme.status = MLME_SUCCESS; |
3193 | drv_event_callback(sdata->local, sdata, &event); | |
635d999f | 3194 | sdata_info(sdata, "associated\n"); |
79ebfb85 JB |
3195 | |
3196 | /* | |
3197 | * destroy assoc_data afterwards, as otherwise an idle | |
3198 | * recalc after assoc_data is NULL but before associated | |
3199 | * is set can cause the interface to go idle | |
3200 | */ | |
3201 | ieee80211_destroy_assoc_data(sdata, true); | |
b0b6aa2c EP |
3202 | |
3203 | /* get uapsd queues configuration */ | |
3204 | uapsd_queues = 0; | |
3205 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
3206 | if (sdata->tx_conf[ac].uapsd) | |
3207 | uapsd_queues |= BIT(ac); | |
66e67e41 JB |
3208 | } |
3209 | ||
b0b6aa2c | 3210 | cfg80211_rx_assoc_resp(sdata->dev, bss, (u8 *)mgmt, len, uapsd_queues); |
66e67e41 | 3211 | } |
8e3c1b77 | 3212 | |
98c8fccf | 3213 | static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata, |
8e3c1b77 | 3214 | struct ieee80211_mgmt *mgmt, size_t len, |
98c8fccf | 3215 | struct ieee80211_rx_status *rx_status, |
d45c4172 | 3216 | struct ieee802_11_elems *elems) |
98c8fccf JB |
3217 | { |
3218 | struct ieee80211_local *local = sdata->local; | |
c2b13452 | 3219 | struct ieee80211_bss *bss; |
98c8fccf | 3220 | struct ieee80211_channel *channel; |
56007a02 | 3221 | |
8d61ffa5 | 3222 | sdata_assert_lock(sdata); |
b4f286a1 | 3223 | |
3afc2167 EG |
3224 | channel = ieee80211_get_channel(local->hw.wiphy, rx_status->freq); |
3225 | if (!channel) | |
98c8fccf JB |
3226 | return; |
3227 | ||
98c8fccf | 3228 | bss = ieee80211_bss_info_update(local, rx_status, mgmt, len, elems, |
d45c4172 | 3229 | channel); |
817cee76 | 3230 | if (bss) { |
817cee76 | 3231 | sdata->vif.bss_conf.beacon_rate = bss->beacon_rate; |
d2722f8b | 3232 | ieee80211_rx_bss_put(local, bss); |
817cee76 | 3233 | } |
f0706e82 JB |
3234 | } |
3235 | ||
3236 | ||
f698d856 | 3237 | static void ieee80211_rx_mgmt_probe_resp(struct ieee80211_sub_if_data *sdata, |
af6b6374 | 3238 | struct sk_buff *skb) |
f0706e82 | 3239 | { |
af6b6374 | 3240 | struct ieee80211_mgmt *mgmt = (void *)skb->data; |
15b7b062 | 3241 | struct ieee80211_if_managed *ifmgd; |
af6b6374 JB |
3242 | struct ieee80211_rx_status *rx_status = (void *) skb->cb; |
3243 | size_t baselen, len = skb->len; | |
ae6a44e3 EK |
3244 | struct ieee802_11_elems elems; |
3245 | ||
15b7b062 KV |
3246 | ifmgd = &sdata->u.mgd; |
3247 | ||
8d61ffa5 | 3248 | sdata_assert_lock(sdata); |
77fdaa12 | 3249 | |
b203ca39 | 3250 | if (!ether_addr_equal(mgmt->da, sdata->vif.addr)) |
8e7cdbb6 TW |
3251 | return; /* ignore ProbeResp to foreign address */ |
3252 | ||
ae6a44e3 EK |
3253 | baselen = (u8 *) mgmt->u.probe_resp.variable - (u8 *) mgmt; |
3254 | if (baselen > len) | |
3255 | return; | |
3256 | ||
3257 | ieee802_11_parse_elems(mgmt->u.probe_resp.variable, len - baselen, | |
b2e506bf | 3258 | false, &elems); |
ae6a44e3 | 3259 | |
d45c4172 | 3260 | ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems); |
9859b81e | 3261 | |
77fdaa12 | 3262 | if (ifmgd->associated && |
b203ca39 | 3263 | ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid)) |
4e5ff376 | 3264 | ieee80211_reset_ap_probe(sdata); |
f0706e82 JB |
3265 | } |
3266 | ||
d91f36db JB |
3267 | /* |
3268 | * This is the canonical list of information elements we care about, | |
3269 | * the filter code also gives us all changes to the Microsoft OUI | |
c8d65917 SG |
3270 | * (00:50:F2) vendor IE which is used for WMM which we need to track, |
3271 | * as well as the DTPC IE (part of the Cisco OUI) used for signaling | |
3272 | * changes to requested client power. | |
d91f36db JB |
3273 | * |
3274 | * We implement beacon filtering in software since that means we can | |
3275 | * avoid processing the frame here and in cfg80211, and userspace | |
3276 | * will not be able to tell whether the hardware supports it or not. | |
3277 | * | |
3278 | * XXX: This list needs to be dynamic -- userspace needs to be able to | |
3279 | * add items it requires. It also needs to be able to tell us to | |
3280 | * look out for other vendor IEs. | |
3281 | */ | |
3282 | static const u64 care_about_ies = | |
1d4df3a5 JB |
3283 | (1ULL << WLAN_EID_COUNTRY) | |
3284 | (1ULL << WLAN_EID_ERP_INFO) | | |
3285 | (1ULL << WLAN_EID_CHANNEL_SWITCH) | | |
3286 | (1ULL << WLAN_EID_PWR_CONSTRAINT) | | |
3287 | (1ULL << WLAN_EID_HT_CAPABILITY) | | |
70a3fd6c JB |
3288 | (1ULL << WLAN_EID_HT_OPERATION) | |
3289 | (1ULL << WLAN_EID_EXT_CHANSWITCH_ANN); | |
d91f36db | 3290 | |
8d61ffa5 JB |
3291 | static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata, |
3292 | struct ieee80211_mgmt *mgmt, size_t len, | |
3293 | struct ieee80211_rx_status *rx_status) | |
f0706e82 | 3294 | { |
d91f36db | 3295 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
17e4ec14 | 3296 | struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf; |
f0706e82 JB |
3297 | size_t baselen; |
3298 | struct ieee802_11_elems elems; | |
f698d856 | 3299 | struct ieee80211_local *local = sdata->local; |
55de908a JB |
3300 | struct ieee80211_chanctx_conf *chanctx_conf; |
3301 | struct ieee80211_channel *chan; | |
bee7f586 | 3302 | struct sta_info *sta; |
471b3efd | 3303 | u32 changed = 0; |
f87ad637 | 3304 | bool erp_valid; |
7a5158ef | 3305 | u8 erp_value = 0; |
d91f36db | 3306 | u32 ncrc; |
77fdaa12 | 3307 | u8 *bssid; |
8d61ffa5 | 3308 | u8 deauth_buf[IEEE80211_DEAUTH_FRAME_LEN]; |
77fdaa12 | 3309 | |
8d61ffa5 | 3310 | sdata_assert_lock(sdata); |
f0706e82 | 3311 | |
ae6a44e3 EK |
3312 | /* Process beacon from the current BSS */ |
3313 | baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt; | |
3314 | if (baselen > len) | |
8d61ffa5 | 3315 | return; |
ae6a44e3 | 3316 | |
55de908a JB |
3317 | rcu_read_lock(); |
3318 | chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); | |
3319 | if (!chanctx_conf) { | |
3320 | rcu_read_unlock(); | |
8d61ffa5 | 3321 | return; |
55de908a JB |
3322 | } |
3323 | ||
4bf88530 | 3324 | if (rx_status->freq != chanctx_conf->def.chan->center_freq) { |
55de908a | 3325 | rcu_read_unlock(); |
8d61ffa5 | 3326 | return; |
55de908a | 3327 | } |
4bf88530 | 3328 | chan = chanctx_conf->def.chan; |
55de908a | 3329 | rcu_read_unlock(); |
f0706e82 | 3330 | |
c65dd147 | 3331 | if (ifmgd->assoc_data && ifmgd->assoc_data->need_beacon && |
b203ca39 | 3332 | ether_addr_equal(mgmt->bssid, ifmgd->assoc_data->bss->bssid)) { |
66e67e41 | 3333 | ieee802_11_parse_elems(mgmt->u.beacon.variable, |
b2e506bf | 3334 | len - baselen, false, &elems); |
77fdaa12 | 3335 | |
d45c4172 | 3336 | ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems); |
482a9c74 AB |
3337 | if (elems.tim && !elems.parse_error) { |
3338 | const struct ieee80211_tim_ie *tim_ie = elems.tim; | |
3339 | ifmgd->dtim_period = tim_ie->dtim_period; | |
3340 | } | |
989c6505 | 3341 | ifmgd->have_beacon = true; |
c65dd147 | 3342 | ifmgd->assoc_data->need_beacon = false; |
30686bf7 | 3343 | if (ieee80211_hw_check(&local->hw, TIMING_BEACON_ONLY)) { |
ef429dad JB |
3344 | sdata->vif.bss_conf.sync_tsf = |
3345 | le64_to_cpu(mgmt->u.beacon.timestamp); | |
3346 | sdata->vif.bss_conf.sync_device_ts = | |
3347 | rx_status->device_timestamp; | |
3348 | if (elems.tim) | |
3349 | sdata->vif.bss_conf.sync_dtim_count = | |
3350 | elems.tim->dtim_count; | |
3351 | else | |
3352 | sdata->vif.bss_conf.sync_dtim_count = 0; | |
3353 | } | |
66e67e41 JB |
3354 | /* continue assoc process */ |
3355 | ifmgd->assoc_data->timeout = jiffies; | |
89afe614 | 3356 | ifmgd->assoc_data->timeout_started = true; |
8d61ffa5 JB |
3357 | run_again(sdata, ifmgd->assoc_data->timeout); |
3358 | return; | |
66e67e41 | 3359 | } |
77fdaa12 | 3360 | |
66e67e41 | 3361 | if (!ifmgd->associated || |
b203ca39 | 3362 | !ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid)) |
8d61ffa5 | 3363 | return; |
66e67e41 | 3364 | bssid = ifmgd->associated->bssid; |
f0706e82 | 3365 | |
17e4ec14 | 3366 | /* Track average RSSI from the Beacon frames of the current AP */ |
17e4ec14 JM |
3367 | if (ifmgd->flags & IEEE80211_STA_RESET_SIGNAL_AVE) { |
3368 | ifmgd->flags &= ~IEEE80211_STA_RESET_SIGNAL_AVE; | |
3ba06c6f | 3369 | ifmgd->ave_beacon_signal = rx_status->signal * 16; |
17e4ec14 | 3370 | ifmgd->last_cqm_event_signal = 0; |
391a200a | 3371 | ifmgd->count_beacon_signal = 1; |
615f7b9b | 3372 | ifmgd->last_ave_beacon_signal = 0; |
17e4ec14 JM |
3373 | } else { |
3374 | ifmgd->ave_beacon_signal = | |
3375 | (IEEE80211_SIGNAL_AVE_WEIGHT * rx_status->signal * 16 + | |
3376 | (16 - IEEE80211_SIGNAL_AVE_WEIGHT) * | |
3377 | ifmgd->ave_beacon_signal) / 16; | |
391a200a | 3378 | ifmgd->count_beacon_signal++; |
17e4ec14 | 3379 | } |
615f7b9b MV |
3380 | |
3381 | if (ifmgd->rssi_min_thold != ifmgd->rssi_max_thold && | |
3382 | ifmgd->count_beacon_signal >= IEEE80211_SIGNAL_AVE_MIN_COUNT) { | |
8ec6d978 | 3383 | int sig = ifmgd->ave_beacon_signal / 16; |
615f7b9b | 3384 | int last_sig = ifmgd->last_ave_beacon_signal; |
a8182929 EG |
3385 | struct ieee80211_event event = { |
3386 | .type = RSSI_EVENT, | |
3387 | }; | |
615f7b9b MV |
3388 | |
3389 | /* | |
3390 | * if signal crosses either of the boundaries, invoke callback | |
3391 | * with appropriate parameters | |
3392 | */ | |
3393 | if (sig > ifmgd->rssi_max_thold && | |
3394 | (last_sig <= ifmgd->rssi_min_thold || last_sig == 0)) { | |
3395 | ifmgd->last_ave_beacon_signal = sig; | |
a8182929 EG |
3396 | event.u.rssi.data = RSSI_EVENT_HIGH; |
3397 | drv_event_callback(local, sdata, &event); | |
615f7b9b MV |
3398 | } else if (sig < ifmgd->rssi_min_thold && |
3399 | (last_sig >= ifmgd->rssi_max_thold || | |
3400 | last_sig == 0)) { | |
3401 | ifmgd->last_ave_beacon_signal = sig; | |
a8182929 EG |
3402 | event.u.rssi.data = RSSI_EVENT_LOW; |
3403 | drv_event_callback(local, sdata, &event); | |
615f7b9b MV |
3404 | } |
3405 | } | |
3406 | ||
17e4ec14 | 3407 | if (bss_conf->cqm_rssi_thold && |
391a200a | 3408 | ifmgd->count_beacon_signal >= IEEE80211_SIGNAL_AVE_MIN_COUNT && |
ea086359 | 3409 | !(sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)) { |
17e4ec14 JM |
3410 | int sig = ifmgd->ave_beacon_signal / 16; |
3411 | int last_event = ifmgd->last_cqm_event_signal; | |
3412 | int thold = bss_conf->cqm_rssi_thold; | |
3413 | int hyst = bss_conf->cqm_rssi_hyst; | |
3414 | if (sig < thold && | |
3415 | (last_event == 0 || sig < last_event - hyst)) { | |
3416 | ifmgd->last_cqm_event_signal = sig; | |
3417 | ieee80211_cqm_rssi_notify( | |
3418 | &sdata->vif, | |
3419 | NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW, | |
3420 | GFP_KERNEL); | |
3421 | } else if (sig > thold && | |
3422 | (last_event == 0 || sig > last_event + hyst)) { | |
3423 | ifmgd->last_cqm_event_signal = sig; | |
3424 | ieee80211_cqm_rssi_notify( | |
3425 | &sdata->vif, | |
3426 | NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH, | |
3427 | GFP_KERNEL); | |
3428 | } | |
3429 | } | |
3430 | ||
392b9ffb | 3431 | if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL) { |
bdcbd8e0 | 3432 | mlme_dbg_ratelimited(sdata, |
112c31f0 | 3433 | "cancelling AP probe due to a received beacon\n"); |
392b9ffb | 3434 | ieee80211_reset_ap_probe(sdata); |
92778180 JM |
3435 | } |
3436 | ||
b291ba11 JB |
3437 | /* |
3438 | * Push the beacon loss detection into the future since | |
3439 | * we are processing a beacon from the AP just now. | |
3440 | */ | |
d3a910a8 | 3441 | ieee80211_sta_reset_beacon_monitor(sdata); |
b291ba11 | 3442 | |
d91f36db JB |
3443 | ncrc = crc32_be(0, (void *)&mgmt->u.beacon.beacon_int, 4); |
3444 | ncrc = ieee802_11_parse_elems_crc(mgmt->u.beacon.variable, | |
b2e506bf | 3445 | len - baselen, false, &elems, |
d91f36db JB |
3446 | care_about_ies, ncrc); |
3447 | ||
30686bf7 | 3448 | if (ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK)) { |
f87ad637 RR |
3449 | bool directed_tim = ieee80211_check_tim(elems.tim, |
3450 | elems.tim_len, | |
3451 | ifmgd->aid); | |
1fb3606b | 3452 | if (directed_tim) { |
572e0012 | 3453 | if (local->hw.conf.dynamic_ps_timeout > 0) { |
70b12f26 RW |
3454 | if (local->hw.conf.flags & IEEE80211_CONF_PS) { |
3455 | local->hw.conf.flags &= ~IEEE80211_CONF_PS; | |
3456 | ieee80211_hw_config(local, | |
3457 | IEEE80211_CONF_CHANGE_PS); | |
3458 | } | |
572e0012 | 3459 | ieee80211_send_nullfunc(local, sdata, 0); |
6f0756a3 | 3460 | } else if (!local->pspolling && sdata->u.mgd.powersave) { |
572e0012 KV |
3461 | local->pspolling = true; |
3462 | ||
3463 | /* | |
3464 | * Here is assumed that the driver will be | |
3465 | * able to send ps-poll frame and receive a | |
3466 | * response even though power save mode is | |
3467 | * enabled, but some drivers might require | |
3468 | * to disable power save here. This needs | |
3469 | * to be investigated. | |
3470 | */ | |
3471 | ieee80211_send_pspoll(local, sdata); | |
3472 | } | |
a97b77b9 VN |
3473 | } |
3474 | } | |
7a5158ef | 3475 | |
488dd7b5 | 3476 | if (sdata->vif.p2p) { |
67baf663 | 3477 | struct ieee80211_p2p_noa_attr noa = {}; |
488dd7b5 JB |
3478 | int ret; |
3479 | ||
3480 | ret = cfg80211_get_p2p_attr(mgmt->u.beacon.variable, | |
3481 | len - baselen, | |
3482 | IEEE80211_P2P_ATTR_ABSENCE_NOTICE, | |
934457ee | 3483 | (u8 *) &noa, sizeof(noa)); |
67baf663 JD |
3484 | if (ret >= 2) { |
3485 | if (sdata->u.mgd.p2p_noa_index != noa.index) { | |
3486 | /* valid noa_attr and index changed */ | |
3487 | sdata->u.mgd.p2p_noa_index = noa.index; | |
3488 | memcpy(&bss_conf->p2p_noa_attr, &noa, sizeof(noa)); | |
3489 | changed |= BSS_CHANGED_P2P_PS; | |
3490 | /* | |
3491 | * make sure we update all information, the CRC | |
3492 | * mechanism doesn't look at P2P attributes. | |
3493 | */ | |
3494 | ifmgd->beacon_crc_valid = false; | |
3495 | } | |
3496 | } else if (sdata->u.mgd.p2p_noa_index != -1) { | |
3497 | /* noa_attr not found and we had valid noa_attr before */ | |
3498 | sdata->u.mgd.p2p_noa_index = -1; | |
3499 | memset(&bss_conf->p2p_noa_attr, 0, sizeof(bss_conf->p2p_noa_attr)); | |
488dd7b5 | 3500 | changed |= BSS_CHANGED_P2P_PS; |
488dd7b5 JB |
3501 | ifmgd->beacon_crc_valid = false; |
3502 | } | |
3503 | } | |
3504 | ||
0c21e632 LC |
3505 | if (ifmgd->csa_waiting_bcn) |
3506 | ieee80211_chswitch_post_beacon(sdata); | |
3507 | ||
2ecc3905 AB |
3508 | /* |
3509 | * Update beacon timing and dtim count on every beacon appearance. This | |
3510 | * will allow the driver to use the most updated values. Do it before | |
3511 | * comparing this one with last received beacon. | |
3512 | * IMPORTANT: These parameters would possibly be out of sync by the time | |
3513 | * the driver will use them. The synchronized view is currently | |
3514 | * guaranteed only in certain callbacks. | |
3515 | */ | |
30686bf7 | 3516 | if (ieee80211_hw_check(&local->hw, TIMING_BEACON_ONLY)) { |
2ecc3905 AB |
3517 | sdata->vif.bss_conf.sync_tsf = |
3518 | le64_to_cpu(mgmt->u.beacon.timestamp); | |
3519 | sdata->vif.bss_conf.sync_device_ts = | |
3520 | rx_status->device_timestamp; | |
3521 | if (elems.tim) | |
3522 | sdata->vif.bss_conf.sync_dtim_count = | |
3523 | elems.tim->dtim_count; | |
3524 | else | |
3525 | sdata->vif.bss_conf.sync_dtim_count = 0; | |
3526 | } | |
3527 | ||
d8ec4433 | 3528 | if (ncrc == ifmgd->beacon_crc && ifmgd->beacon_crc_valid) |
8d61ffa5 | 3529 | return; |
30196673 | 3530 | ifmgd->beacon_crc = ncrc; |
d8ec4433 | 3531 | ifmgd->beacon_crc_valid = true; |
30196673 | 3532 | |
d45c4172 | 3533 | ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems); |
7d25745d | 3534 | |
d70b7616 | 3535 | ieee80211_sta_process_chanswitch(sdata, rx_status->mactime, |
2ba45384 | 3536 | rx_status->device_timestamp, |
d70b7616 JB |
3537 | &elems, true); |
3538 | ||
095d81ce JB |
3539 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_WMM) && |
3540 | ieee80211_sta_wmm_params(local, sdata, elems.wmm_param, | |
7d25745d JB |
3541 | elems.wmm_param_len)) |
3542 | changed |= BSS_CHANGED_QOS; | |
3543 | ||
c65dd147 EG |
3544 | /* |
3545 | * If we haven't had a beacon before, tell the driver about the | |
ef429dad | 3546 | * DTIM period (and beacon timing if desired) now. |
c65dd147 | 3547 | */ |
989c6505 | 3548 | if (!ifmgd->have_beacon) { |
c65dd147 EG |
3549 | /* a few bogus AP send dtim_period = 0 or no TIM IE */ |
3550 | if (elems.tim) | |
3551 | bss_conf->dtim_period = elems.tim->dtim_period ?: 1; | |
3552 | else | |
3553 | bss_conf->dtim_period = 1; | |
ef429dad | 3554 | |
989c6505 AB |
3555 | changed |= BSS_CHANGED_BEACON_INFO; |
3556 | ifmgd->have_beacon = true; | |
482a9c74 AB |
3557 | |
3558 | mutex_lock(&local->iflist_mtx); | |
3559 | ieee80211_recalc_ps(local, -1); | |
3560 | mutex_unlock(&local->iflist_mtx); | |
3561 | ||
ce857888 | 3562 | ieee80211_recalc_ps_vif(sdata); |
c65dd147 EG |
3563 | } |
3564 | ||
1946bed9 | 3565 | if (elems.erp_info) { |
7a5158ef JB |
3566 | erp_valid = true; |
3567 | erp_value = elems.erp_info[0]; | |
3568 | } else { | |
3569 | erp_valid = false; | |
50c4afb9 | 3570 | } |
7a5158ef JB |
3571 | changed |= ieee80211_handle_bss_capability(sdata, |
3572 | le16_to_cpu(mgmt->u.beacon.capab_info), | |
3573 | erp_valid, erp_value); | |
f0706e82 | 3574 | |
1128958d | 3575 | mutex_lock(&local->sta_mtx); |
bee7f586 JB |
3576 | sta = sta_info_get(sdata, bssid); |
3577 | ||
53b954ee EP |
3578 | if (ieee80211_config_bw(sdata, sta, |
3579 | elems.ht_cap_elem, elems.ht_operation, | |
30eb1dc2 JB |
3580 | elems.vht_operation, bssid, &changed)) { |
3581 | mutex_unlock(&local->sta_mtx); | |
3582 | ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, | |
3583 | WLAN_REASON_DEAUTH_LEAVING, | |
3584 | true, deauth_buf); | |
a90faa9d EG |
3585 | ieee80211_report_disconnect(sdata, deauth_buf, |
3586 | sizeof(deauth_buf), true, | |
3587 | WLAN_REASON_DEAUTH_LEAVING); | |
8d61ffa5 | 3588 | return; |
30eb1dc2 | 3589 | } |
bee7f586 JB |
3590 | |
3591 | if (sta && elems.opmode_notif) | |
3592 | ieee80211_vht_handle_opmode(sdata, sta, *elems.opmode_notif, | |
3593 | rx_status->band, true); | |
1128958d | 3594 | mutex_unlock(&local->sta_mtx); |
d3c990fb | 3595 | |
24a4e400 SG |
3596 | changed |= ieee80211_handle_pwr_constr(sdata, chan, mgmt, |
3597 | elems.country_elem, | |
3598 | elems.country_elem_len, | |
c8d65917 SG |
3599 | elems.pwr_constr_elem, |
3600 | elems.cisco_dtpc_elem); | |
3f2355cb | 3601 | |
471b3efd | 3602 | ieee80211_bss_info_change_notify(sdata, changed); |
f0706e82 JB |
3603 | } |
3604 | ||
1fa57d01 JB |
3605 | void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, |
3606 | struct sk_buff *skb) | |
f0706e82 JB |
3607 | { |
3608 | struct ieee80211_rx_status *rx_status; | |
f0706e82 JB |
3609 | struct ieee80211_mgmt *mgmt; |
3610 | u16 fc; | |
1b3a2e49 JB |
3611 | struct ieee802_11_elems elems; |
3612 | int ies_len; | |
f0706e82 | 3613 | |
f0706e82 JB |
3614 | rx_status = (struct ieee80211_rx_status *) skb->cb; |
3615 | mgmt = (struct ieee80211_mgmt *) skb->data; | |
3616 | fc = le16_to_cpu(mgmt->frame_control); | |
3617 | ||
8d61ffa5 | 3618 | sdata_lock(sdata); |
77fdaa12 | 3619 | |
66e67e41 JB |
3620 | switch (fc & IEEE80211_FCTL_STYPE) { |
3621 | case IEEE80211_STYPE_BEACON: | |
8d61ffa5 | 3622 | ieee80211_rx_mgmt_beacon(sdata, mgmt, skb->len, rx_status); |
66e67e41 JB |
3623 | break; |
3624 | case IEEE80211_STYPE_PROBE_RESP: | |
3625 | ieee80211_rx_mgmt_probe_resp(sdata, skb); | |
3626 | break; | |
3627 | case IEEE80211_STYPE_AUTH: | |
8d61ffa5 | 3628 | ieee80211_rx_mgmt_auth(sdata, mgmt, skb->len); |
66e67e41 JB |
3629 | break; |
3630 | case IEEE80211_STYPE_DEAUTH: | |
8d61ffa5 | 3631 | ieee80211_rx_mgmt_deauth(sdata, mgmt, skb->len); |
66e67e41 JB |
3632 | break; |
3633 | case IEEE80211_STYPE_DISASSOC: | |
8d61ffa5 | 3634 | ieee80211_rx_mgmt_disassoc(sdata, mgmt, skb->len); |
66e67e41 JB |
3635 | break; |
3636 | case IEEE80211_STYPE_ASSOC_RESP: | |
3637 | case IEEE80211_STYPE_REASSOC_RESP: | |
8d61ffa5 | 3638 | ieee80211_rx_mgmt_assoc_resp(sdata, mgmt, skb->len); |
66e67e41 JB |
3639 | break; |
3640 | case IEEE80211_STYPE_ACTION: | |
37799e52 | 3641 | if (mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT) { |
1b3a2e49 JB |
3642 | ies_len = skb->len - |
3643 | offsetof(struct ieee80211_mgmt, | |
3644 | u.action.u.chan_switch.variable); | |
37799e52 JB |
3645 | |
3646 | if (ies_len < 0) | |
3647 | break; | |
3648 | ||
3649 | ieee802_11_parse_elems( | |
3650 | mgmt->u.action.u.chan_switch.variable, | |
b2e506bf | 3651 | ies_len, true, &elems); |
37799e52 JB |
3652 | |
3653 | if (elems.parse_error) | |
3654 | break; | |
3655 | ||
1b3a2e49 | 3656 | ieee80211_sta_process_chanswitch(sdata, |
2ba45384 LC |
3657 | rx_status->mactime, |
3658 | rx_status->device_timestamp, | |
3659 | &elems, false); | |
1b3a2e49 JB |
3660 | } else if (mgmt->u.action.category == WLAN_CATEGORY_PUBLIC) { |
3661 | ies_len = skb->len - | |
3662 | offsetof(struct ieee80211_mgmt, | |
3663 | u.action.u.ext_chan_switch.variable); | |
3664 | ||
3665 | if (ies_len < 0) | |
3666 | break; | |
3667 | ||
3668 | ieee802_11_parse_elems( | |
3669 | mgmt->u.action.u.ext_chan_switch.variable, | |
b2e506bf | 3670 | ies_len, true, &elems); |
1b3a2e49 JB |
3671 | |
3672 | if (elems.parse_error) | |
3673 | break; | |
3674 | ||
3675 | /* for the handling code pretend this was also an IE */ | |
3676 | elems.ext_chansw_ie = | |
3677 | &mgmt->u.action.u.ext_chan_switch.data; | |
3678 | ||
66e67e41 | 3679 | ieee80211_sta_process_chanswitch(sdata, |
2ba45384 LC |
3680 | rx_status->mactime, |
3681 | rx_status->device_timestamp, | |
3682 | &elems, false); | |
77fdaa12 | 3683 | } |
37799e52 | 3684 | break; |
77fdaa12 | 3685 | } |
8d61ffa5 | 3686 | sdata_unlock(sdata); |
f0706e82 JB |
3687 | } |
3688 | ||
9c6bd790 | 3689 | static void ieee80211_sta_timer(unsigned long data) |
f0706e82 | 3690 | { |
60f8b39c JB |
3691 | struct ieee80211_sub_if_data *sdata = |
3692 | (struct ieee80211_sub_if_data *) data; | |
5bb644a0 | 3693 | |
9b7d72c1 | 3694 | ieee80211_queue_work(&sdata->local->hw, &sdata->work); |
f0706e82 JB |
3695 | } |
3696 | ||
04ac3c0e | 3697 | static void ieee80211_sta_connection_lost(struct ieee80211_sub_if_data *sdata, |
6b684db1 | 3698 | u8 *bssid, u8 reason, bool tx) |
04ac3c0e | 3699 | { |
6ae16775 | 3700 | u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN]; |
04ac3c0e | 3701 | |
37ad3888 | 3702 | ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, reason, |
6b684db1 | 3703 | tx, frame_buf); |
37ad3888 | 3704 | |
a90faa9d EG |
3705 | ieee80211_report_disconnect(sdata, frame_buf, sizeof(frame_buf), true, |
3706 | reason); | |
04ac3c0e FF |
3707 | } |
3708 | ||
46cad4b7 | 3709 | static int ieee80211_auth(struct ieee80211_sub_if_data *sdata) |
66e67e41 JB |
3710 | { |
3711 | struct ieee80211_local *local = sdata->local; | |
3712 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
3713 | struct ieee80211_mgd_auth_data *auth_data = ifmgd->auth_data; | |
1672c0e3 | 3714 | u32 tx_flags = 0; |
46cad4b7 JB |
3715 | u16 trans = 1; |
3716 | u16 status = 0; | |
66e67e41 | 3717 | |
8d61ffa5 | 3718 | sdata_assert_lock(sdata); |
66e67e41 JB |
3719 | |
3720 | if (WARN_ON_ONCE(!auth_data)) | |
3721 | return -EINVAL; | |
3722 | ||
66e67e41 JB |
3723 | auth_data->tries++; |
3724 | ||
3725 | if (auth_data->tries > IEEE80211_AUTH_MAX_TRIES) { | |
bdcbd8e0 JB |
3726 | sdata_info(sdata, "authentication with %pM timed out\n", |
3727 | auth_data->bss->bssid); | |
66e67e41 JB |
3728 | |
3729 | /* | |
3730 | * Most likely AP is not in the range so remove the | |
3731 | * bss struct for that AP. | |
3732 | */ | |
3733 | cfg80211_unlink_bss(local->hw.wiphy, auth_data->bss); | |
3734 | ||
3735 | return -ETIMEDOUT; | |
3736 | } | |
3737 | ||
a1845fc7 JB |
3738 | drv_mgd_prepare_tx(local, sdata); |
3739 | ||
46cad4b7 JB |
3740 | sdata_info(sdata, "send auth to %pM (try %d/%d)\n", |
3741 | auth_data->bss->bssid, auth_data->tries, | |
3742 | IEEE80211_AUTH_MAX_TRIES); | |
6b8ece3a | 3743 | |
46cad4b7 | 3744 | auth_data->expected_transaction = 2; |
6b8ece3a | 3745 | |
46cad4b7 JB |
3746 | if (auth_data->algorithm == WLAN_AUTH_SAE) { |
3747 | trans = auth_data->sae_trans; | |
3748 | status = auth_data->sae_status; | |
3749 | auth_data->expected_transaction = trans; | |
3750 | } | |
66e67e41 | 3751 | |
46cad4b7 JB |
3752 | if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) |
3753 | tx_flags = IEEE80211_TX_CTL_REQ_TX_STATUS | | |
3754 | IEEE80211_TX_INTFL_MLME_CONN_TX; | |
66e67e41 | 3755 | |
46cad4b7 JB |
3756 | ieee80211_send_auth(sdata, trans, auth_data->algorithm, status, |
3757 | auth_data->data, auth_data->data_len, | |
3758 | auth_data->bss->bssid, | |
3759 | auth_data->bss->bssid, NULL, 0, 0, | |
3760 | tx_flags); | |
66e67e41 | 3761 | |
6211dd12 | 3762 | if (tx_flags == 0) { |
1672c0e3 | 3763 | auth_data->timeout = jiffies + IEEE80211_AUTH_TIMEOUT; |
cb236d2d | 3764 | auth_data->timeout_started = true; |
8d61ffa5 | 3765 | run_again(sdata, auth_data->timeout); |
89afe614 | 3766 | } else { |
cb236d2d JB |
3767 | auth_data->timeout = |
3768 | round_jiffies_up(jiffies + IEEE80211_AUTH_TIMEOUT_LONG); | |
3769 | auth_data->timeout_started = true; | |
3770 | run_again(sdata, auth_data->timeout); | |
1672c0e3 | 3771 | } |
66e67e41 JB |
3772 | |
3773 | return 0; | |
3774 | } | |
3775 | ||
3776 | static int ieee80211_do_assoc(struct ieee80211_sub_if_data *sdata) | |
3777 | { | |
3778 | struct ieee80211_mgd_assoc_data *assoc_data = sdata->u.mgd.assoc_data; | |
3779 | struct ieee80211_local *local = sdata->local; | |
3780 | ||
8d61ffa5 | 3781 | sdata_assert_lock(sdata); |
66e67e41 | 3782 | |
66e67e41 JB |
3783 | assoc_data->tries++; |
3784 | if (assoc_data->tries > IEEE80211_ASSOC_MAX_TRIES) { | |
bdcbd8e0 JB |
3785 | sdata_info(sdata, "association with %pM timed out\n", |
3786 | assoc_data->bss->bssid); | |
66e67e41 JB |
3787 | |
3788 | /* | |
3789 | * Most likely AP is not in the range so remove the | |
3790 | * bss struct for that AP. | |
3791 | */ | |
3792 | cfg80211_unlink_bss(local->hw.wiphy, assoc_data->bss); | |
3793 | ||
3794 | return -ETIMEDOUT; | |
3795 | } | |
3796 | ||
bdcbd8e0 JB |
3797 | sdata_info(sdata, "associate with %pM (try %d/%d)\n", |
3798 | assoc_data->bss->bssid, assoc_data->tries, | |
3799 | IEEE80211_ASSOC_MAX_TRIES); | |
66e67e41 JB |
3800 | ieee80211_send_assoc(sdata); |
3801 | ||
30686bf7 | 3802 | if (!ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) { |
1672c0e3 | 3803 | assoc_data->timeout = jiffies + IEEE80211_ASSOC_TIMEOUT; |
89afe614 | 3804 | assoc_data->timeout_started = true; |
8d61ffa5 | 3805 | run_again(sdata, assoc_data->timeout); |
89afe614 | 3806 | } else { |
cb236d2d JB |
3807 | assoc_data->timeout = |
3808 | round_jiffies_up(jiffies + | |
3809 | IEEE80211_ASSOC_TIMEOUT_LONG); | |
3810 | assoc_data->timeout_started = true; | |
3811 | run_again(sdata, assoc_data->timeout); | |
1672c0e3 | 3812 | } |
66e67e41 JB |
3813 | |
3814 | return 0; | |
3815 | } | |
3816 | ||
1672c0e3 JB |
3817 | void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata, |
3818 | __le16 fc, bool acked) | |
3819 | { | |
3820 | struct ieee80211_local *local = sdata->local; | |
3821 | ||
3822 | sdata->u.mgd.status_fc = fc; | |
3823 | sdata->u.mgd.status_acked = acked; | |
3824 | sdata->u.mgd.status_received = true; | |
3825 | ||
3826 | ieee80211_queue_work(&local->hw, &sdata->work); | |
3827 | } | |
3828 | ||
1fa57d01 | 3829 | void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata) |
9c6bd790 | 3830 | { |
9c6bd790 | 3831 | struct ieee80211_local *local = sdata->local; |
1fa57d01 | 3832 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
9c6bd790 | 3833 | |
8d61ffa5 | 3834 | sdata_lock(sdata); |
77fdaa12 | 3835 | |
1672c0e3 JB |
3836 | if (ifmgd->status_received) { |
3837 | __le16 fc = ifmgd->status_fc; | |
3838 | bool status_acked = ifmgd->status_acked; | |
3839 | ||
3840 | ifmgd->status_received = false; | |
46cad4b7 | 3841 | if (ifmgd->auth_data && ieee80211_is_auth(fc)) { |
1672c0e3 JB |
3842 | if (status_acked) { |
3843 | ifmgd->auth_data->timeout = | |
3844 | jiffies + IEEE80211_AUTH_TIMEOUT_SHORT; | |
8d61ffa5 | 3845 | run_again(sdata, ifmgd->auth_data->timeout); |
1672c0e3 JB |
3846 | } else { |
3847 | ifmgd->auth_data->timeout = jiffies - 1; | |
3848 | } | |
89afe614 | 3849 | ifmgd->auth_data->timeout_started = true; |
1672c0e3 JB |
3850 | } else if (ifmgd->assoc_data && |
3851 | (ieee80211_is_assoc_req(fc) || | |
3852 | ieee80211_is_reassoc_req(fc))) { | |
3853 | if (status_acked) { | |
3854 | ifmgd->assoc_data->timeout = | |
3855 | jiffies + IEEE80211_ASSOC_TIMEOUT_SHORT; | |
8d61ffa5 | 3856 | run_again(sdata, ifmgd->assoc_data->timeout); |
1672c0e3 JB |
3857 | } else { |
3858 | ifmgd->assoc_data->timeout = jiffies - 1; | |
3859 | } | |
89afe614 | 3860 | ifmgd->assoc_data->timeout_started = true; |
1672c0e3 JB |
3861 | } |
3862 | } | |
3863 | ||
89afe614 | 3864 | if (ifmgd->auth_data && ifmgd->auth_data->timeout_started && |
66e67e41 JB |
3865 | time_after(jiffies, ifmgd->auth_data->timeout)) { |
3866 | if (ifmgd->auth_data->done) { | |
3867 | /* | |
3868 | * ok ... we waited for assoc but userspace didn't, | |
3869 | * so let's just kill the auth data | |
3870 | */ | |
3871 | ieee80211_destroy_auth_data(sdata, false); | |
46cad4b7 | 3872 | } else if (ieee80211_auth(sdata)) { |
66e67e41 | 3873 | u8 bssid[ETH_ALEN]; |
a9409093 EG |
3874 | struct ieee80211_event event = { |
3875 | .type = MLME_EVENT, | |
3876 | .u.mlme.data = AUTH_EVENT, | |
3877 | .u.mlme.status = MLME_TIMEOUT, | |
3878 | }; | |
66e67e41 JB |
3879 | |
3880 | memcpy(bssid, ifmgd->auth_data->bss->bssid, ETH_ALEN); | |
3881 | ||
3882 | ieee80211_destroy_auth_data(sdata, false); | |
3883 | ||
6ff57cf8 | 3884 | cfg80211_auth_timeout(sdata->dev, bssid); |
a9409093 | 3885 | drv_event_callback(sdata->local, sdata, &event); |
66e67e41 | 3886 | } |
89afe614 | 3887 | } else if (ifmgd->auth_data && ifmgd->auth_data->timeout_started) |
8d61ffa5 | 3888 | run_again(sdata, ifmgd->auth_data->timeout); |
66e67e41 | 3889 | |
89afe614 | 3890 | if (ifmgd->assoc_data && ifmgd->assoc_data->timeout_started && |
66e67e41 | 3891 | time_after(jiffies, ifmgd->assoc_data->timeout)) { |
989c6505 | 3892 | if ((ifmgd->assoc_data->need_beacon && !ifmgd->have_beacon) || |
66e67e41 | 3893 | ieee80211_do_assoc(sdata)) { |
959867fa | 3894 | struct cfg80211_bss *bss = ifmgd->assoc_data->bss; |
d0d1a12f EG |
3895 | struct ieee80211_event event = { |
3896 | .type = MLME_EVENT, | |
3897 | .u.mlme.data = ASSOC_EVENT, | |
3898 | .u.mlme.status = MLME_TIMEOUT, | |
3899 | }; | |
66e67e41 JB |
3900 | |
3901 | ieee80211_destroy_assoc_data(sdata, false); | |
959867fa | 3902 | cfg80211_assoc_timeout(sdata->dev, bss); |
d0d1a12f | 3903 | drv_event_callback(sdata->local, sdata, &event); |
66e67e41 | 3904 | } |
89afe614 | 3905 | } else if (ifmgd->assoc_data && ifmgd->assoc_data->timeout_started) |
8d61ffa5 | 3906 | run_again(sdata, ifmgd->assoc_data->timeout); |
66e67e41 | 3907 | |
392b9ffb | 3908 | if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL && |
b291ba11 | 3909 | ifmgd->associated) { |
a43abf29 | 3910 | u8 bssid[ETH_ALEN]; |
72a8a3ed | 3911 | int max_tries; |
a43abf29 | 3912 | |
0c1ad2ca | 3913 | memcpy(bssid, ifmgd->associated->bssid, ETH_ALEN); |
4e5ff376 | 3914 | |
30686bf7 | 3915 | if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) |
180205bd | 3916 | max_tries = max_nullfunc_tries; |
72a8a3ed | 3917 | else |
180205bd | 3918 | max_tries = max_probe_tries; |
72a8a3ed | 3919 | |
4e5ff376 FF |
3920 | /* ACK received for nullfunc probing frame */ |
3921 | if (!ifmgd->probe_send_count) | |
3922 | ieee80211_reset_ap_probe(sdata); | |
04ac3c0e FF |
3923 | else if (ifmgd->nullfunc_failed) { |
3924 | if (ifmgd->probe_send_count < max_tries) { | |
bdcbd8e0 JB |
3925 | mlme_dbg(sdata, |
3926 | "No ack for nullfunc frame to AP %pM, try %d/%i\n", | |
3927 | bssid, ifmgd->probe_send_count, | |
3928 | max_tries); | |
04ac3c0e FF |
3929 | ieee80211_mgd_probe_ap_send(sdata); |
3930 | } else { | |
bdcbd8e0 JB |
3931 | mlme_dbg(sdata, |
3932 | "No ack for nullfunc frame to AP %pM, disconnecting.\n", | |
3933 | bssid); | |
95acac61 | 3934 | ieee80211_sta_connection_lost(sdata, bssid, |
6b684db1 JB |
3935 | WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, |
3936 | false); | |
04ac3c0e FF |
3937 | } |
3938 | } else if (time_is_after_jiffies(ifmgd->probe_timeout)) | |
8d61ffa5 | 3939 | run_again(sdata, ifmgd->probe_timeout); |
30686bf7 | 3940 | else if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) { |
bdcbd8e0 JB |
3941 | mlme_dbg(sdata, |
3942 | "Failed to send nullfunc to AP %pM after %dms, disconnecting\n", | |
3943 | bssid, probe_wait_ms); | |
95acac61 | 3944 | ieee80211_sta_connection_lost(sdata, bssid, |
6b684db1 | 3945 | WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, false); |
04ac3c0e | 3946 | } else if (ifmgd->probe_send_count < max_tries) { |
bdcbd8e0 JB |
3947 | mlme_dbg(sdata, |
3948 | "No probe response from AP %pM after %dms, try %d/%i\n", | |
3949 | bssid, probe_wait_ms, | |
3950 | ifmgd->probe_send_count, max_tries); | |
a43abf29 ML |
3951 | ieee80211_mgd_probe_ap_send(sdata); |
3952 | } else { | |
b291ba11 JB |
3953 | /* |
3954 | * We actually lost the connection ... or did we? | |
3955 | * Let's make sure! | |
3956 | */ | |
b38afa87 BG |
3957 | wiphy_debug(local->hw.wiphy, |
3958 | "%s: No probe response from AP %pM" | |
3959 | " after %dms, disconnecting.\n", | |
3960 | sdata->name, | |
180205bd | 3961 | bssid, probe_wait_ms); |
04ac3c0e | 3962 | |
95acac61 | 3963 | ieee80211_sta_connection_lost(sdata, bssid, |
6b684db1 | 3964 | WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, false); |
b291ba11 JB |
3965 | } |
3966 | } | |
3967 | ||
8d61ffa5 | 3968 | sdata_unlock(sdata); |
f0706e82 JB |
3969 | } |
3970 | ||
b291ba11 JB |
3971 | static void ieee80211_sta_bcn_mon_timer(unsigned long data) |
3972 | { | |
3973 | struct ieee80211_sub_if_data *sdata = | |
3974 | (struct ieee80211_sub_if_data *) data; | |
0c21e632 | 3975 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
b291ba11 | 3976 | |
0c21e632 | 3977 | if (sdata->vif.csa_active && !ifmgd->csa_waiting_bcn) |
e5593f56 MK |
3978 | return; |
3979 | ||
682bd38b | 3980 | sdata->u.mgd.connection_loss = false; |
1e4dcd01 JO |
3981 | ieee80211_queue_work(&sdata->local->hw, |
3982 | &sdata->u.mgd.beacon_connection_loss_work); | |
b291ba11 JB |
3983 | } |
3984 | ||
3985 | static void ieee80211_sta_conn_mon_timer(unsigned long data) | |
3986 | { | |
3987 | struct ieee80211_sub_if_data *sdata = | |
3988 | (struct ieee80211_sub_if_data *) data; | |
3989 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
3990 | struct ieee80211_local *local = sdata->local; | |
3991 | ||
0c21e632 | 3992 | if (sdata->vif.csa_active && !ifmgd->csa_waiting_bcn) |
e5593f56 MK |
3993 | return; |
3994 | ||
42935eca | 3995 | ieee80211_queue_work(&local->hw, &ifmgd->monitor_work); |
b291ba11 JB |
3996 | } |
3997 | ||
3998 | static void ieee80211_sta_monitor_work(struct work_struct *work) | |
3999 | { | |
4000 | struct ieee80211_sub_if_data *sdata = | |
4001 | container_of(work, struct ieee80211_sub_if_data, | |
4002 | u.mgd.monitor_work); | |
4003 | ||
4004 | ieee80211_mgd_probe_ap(sdata, false); | |
4005 | } | |
4006 | ||
9c6bd790 JB |
4007 | static void ieee80211_restart_sta_timer(struct ieee80211_sub_if_data *sdata) |
4008 | { | |
ad935687 | 4009 | if (sdata->vif.type == NL80211_IFTYPE_STATION) { |
925e64c3 | 4010 | __ieee80211_stop_poll(sdata); |
ad935687 | 4011 | |
b291ba11 | 4012 | /* let's probe the connection once */ |
30686bf7 | 4013 | if (!ieee80211_hw_check(&sdata->local->hw, CONNECTION_MONITOR)) |
494f1fe5 EP |
4014 | ieee80211_queue_work(&sdata->local->hw, |
4015 | &sdata->u.mgd.monitor_work); | |
b291ba11 | 4016 | /* and do all the other regular work too */ |
64592c8f | 4017 | ieee80211_queue_work(&sdata->local->hw, &sdata->work); |
ad935687 | 4018 | } |
9c6bd790 | 4019 | } |
f0706e82 | 4020 | |
b8360ab8 | 4021 | #ifdef CONFIG_PM |
1a1cb744 JB |
4022 | void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata) |
4023 | { | |
4024 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
4025 | u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN]; | |
4026 | ||
4027 | sdata_lock(sdata); | |
4028 | ||
c52666ae EG |
4029 | if (ifmgd->auth_data || ifmgd->assoc_data) { |
4030 | const u8 *bssid = ifmgd->auth_data ? | |
4031 | ifmgd->auth_data->bss->bssid : | |
4032 | ifmgd->assoc_data->bss->bssid; | |
4033 | ||
1a1cb744 | 4034 | /* |
c52666ae EG |
4035 | * If we are trying to authenticate / associate while suspending, |
4036 | * cfg80211 won't know and won't actually abort those attempts, | |
4037 | * thus we need to do that ourselves. | |
1a1cb744 | 4038 | */ |
c52666ae | 4039 | ieee80211_send_deauth_disassoc(sdata, bssid, |
1a1cb744 JB |
4040 | IEEE80211_STYPE_DEAUTH, |
4041 | WLAN_REASON_DEAUTH_LEAVING, | |
4042 | false, frame_buf); | |
c52666ae EG |
4043 | if (ifmgd->assoc_data) |
4044 | ieee80211_destroy_assoc_data(sdata, false); | |
4045 | if (ifmgd->auth_data) | |
4046 | ieee80211_destroy_auth_data(sdata, false); | |
1a1cb744 JB |
4047 | cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf, |
4048 | IEEE80211_DEAUTH_FRAME_LEN); | |
4049 | } | |
4050 | ||
be72afe0 JB |
4051 | /* This is a bit of a hack - we should find a better and more generic |
4052 | * solution to this. Normally when suspending, cfg80211 will in fact | |
4053 | * deauthenticate. However, it doesn't (and cannot) stop an ongoing | |
4054 | * auth (not so important) or assoc (this is the problem) process. | |
4055 | * | |
4056 | * As a consequence, it can happen that we are in the process of both | |
4057 | * associating and suspending, and receive an association response | |
4058 | * after cfg80211 has checked if it needs to disconnect, but before | |
4059 | * we actually set the flag to drop incoming frames. This will then | |
4060 | * cause the workqueue flush to process the association response in | |
4061 | * the suspend, resulting in a successful association just before it | |
4062 | * tries to remove the interface from the driver, which now though | |
4063 | * has a channel context assigned ... this results in issues. | |
4064 | * | |
4065 | * To work around this (for now) simply deauth here again if we're | |
4066 | * now connected. | |
4067 | */ | |
4068 | if (ifmgd->associated && !sdata->local->wowlan) { | |
4069 | u8 bssid[ETH_ALEN]; | |
4070 | struct cfg80211_deauth_request req = { | |
4071 | .reason_code = WLAN_REASON_DEAUTH_LEAVING, | |
4072 | .bssid = bssid, | |
4073 | }; | |
4074 | ||
4075 | memcpy(bssid, ifmgd->associated->bssid, ETH_ALEN); | |
4076 | ieee80211_mgd_deauth(sdata, &req); | |
4077 | } | |
4078 | ||
1a1cb744 JB |
4079 | sdata_unlock(sdata); |
4080 | } | |
4081 | ||
b8360ab8 JB |
4082 | void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata) |
4083 | { | |
4084 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
4085 | ||
8d61ffa5 | 4086 | sdata_lock(sdata); |
b8360ab8 | 4087 | if (!ifmgd->associated) { |
8d61ffa5 | 4088 | sdata_unlock(sdata); |
b8360ab8 JB |
4089 | return; |
4090 | } | |
4091 | ||
4092 | if (sdata->flags & IEEE80211_SDATA_DISCONNECT_RESUME) { | |
4093 | sdata->flags &= ~IEEE80211_SDATA_DISCONNECT_RESUME; | |
4094 | mlme_dbg(sdata, "driver requested disconnect after resume\n"); | |
4095 | ieee80211_sta_connection_lost(sdata, | |
4096 | ifmgd->associated->bssid, | |
4097 | WLAN_REASON_UNSPECIFIED, | |
4098 | true); | |
8d61ffa5 | 4099 | sdata_unlock(sdata); |
b8360ab8 JB |
4100 | return; |
4101 | } | |
8d61ffa5 | 4102 | sdata_unlock(sdata); |
b8360ab8 JB |
4103 | } |
4104 | #endif | |
4105 | ||
9c6bd790 JB |
4106 | /* interface setup */ |
4107 | void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata) | |
f0706e82 | 4108 | { |
46900298 | 4109 | struct ieee80211_if_managed *ifmgd; |
988c0f72 | 4110 | |
46900298 | 4111 | ifmgd = &sdata->u.mgd; |
b291ba11 | 4112 | INIT_WORK(&ifmgd->monitor_work, ieee80211_sta_monitor_work); |
46900298 | 4113 | INIT_WORK(&ifmgd->chswitch_work, ieee80211_chswitch_work); |
1e4dcd01 JO |
4114 | INIT_WORK(&ifmgd->beacon_connection_loss_work, |
4115 | ieee80211_beacon_connection_loss_work); | |
882a7c69 JB |
4116 | INIT_WORK(&ifmgd->csa_connection_drop_work, |
4117 | ieee80211_csa_connection_drop_work); | |
687da132 | 4118 | INIT_WORK(&ifmgd->request_smps_work, ieee80211_request_smps_mgd_work); |
81dd2b88 AN |
4119 | INIT_DELAYED_WORK(&ifmgd->tdls_peer_del_work, |
4120 | ieee80211_tdls_peer_del_work); | |
46900298 | 4121 | setup_timer(&ifmgd->timer, ieee80211_sta_timer, |
c481ec97 | 4122 | (unsigned long) sdata); |
b291ba11 JB |
4123 | setup_timer(&ifmgd->bcn_mon_timer, ieee80211_sta_bcn_mon_timer, |
4124 | (unsigned long) sdata); | |
4125 | setup_timer(&ifmgd->conn_mon_timer, ieee80211_sta_conn_mon_timer, | |
4126 | (unsigned long) sdata); | |
46900298 | 4127 | setup_timer(&ifmgd->chswitch_timer, ieee80211_chswitch_timer, |
9c6bd790 | 4128 | (unsigned long) sdata); |
02219b3a JB |
4129 | INIT_DELAYED_WORK(&ifmgd->tx_tspec_wk, |
4130 | ieee80211_sta_handle_tspec_ac_params_wk); | |
9c6bd790 | 4131 | |
ab1faead | 4132 | ifmgd->flags = 0; |
1478acb3 | 4133 | ifmgd->powersave = sdata->wdev.ps; |
219c3867 AB |
4134 | ifmgd->uapsd_queues = sdata->local->hw.uapsd_queues; |
4135 | ifmgd->uapsd_max_sp_len = sdata->local->hw.uapsd_max_sp_len; | |
67baf663 | 4136 | ifmgd->p2p_noa_index = -1; |
bbbdff9e | 4137 | |
0d8614b4 | 4138 | if (sdata->local->hw.wiphy->features & NL80211_FEATURE_DYNAMIC_SMPS) |
0f78231b JB |
4139 | ifmgd->req_smps = IEEE80211_SMPS_AUTOMATIC; |
4140 | else | |
4141 | ifmgd->req_smps = IEEE80211_SMPS_OFF; | |
1277b4a9 LK |
4142 | |
4143 | /* Setup TDLS data */ | |
4144 | spin_lock_init(&ifmgd->teardown_lock); | |
4145 | ifmgd->teardown_skb = NULL; | |
4146 | ifmgd->orig_teardown_skb = NULL; | |
f0706e82 JB |
4147 | } |
4148 | ||
77fdaa12 JB |
4149 | /* scan finished notification */ |
4150 | void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local) | |
60f8b39c | 4151 | { |
31ee67a1 | 4152 | struct ieee80211_sub_if_data *sdata; |
60f8b39c | 4153 | |
77fdaa12 JB |
4154 | /* Restart STA timers */ |
4155 | rcu_read_lock(); | |
370bd005 BG |
4156 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { |
4157 | if (ieee80211_sdata_running(sdata)) | |
4158 | ieee80211_restart_sta_timer(sdata); | |
4159 | } | |
77fdaa12 JB |
4160 | rcu_read_unlock(); |
4161 | } | |
60f8b39c | 4162 | |
77fdaa12 JB |
4163 | int ieee80211_max_network_latency(struct notifier_block *nb, |
4164 | unsigned long data, void *dummy) | |
4165 | { | |
4166 | s32 latency_usec = (s32) data; | |
4167 | struct ieee80211_local *local = | |
4168 | container_of(nb, struct ieee80211_local, | |
4169 | network_latency_notifier); | |
1fa6f4af | 4170 | |
77fdaa12 JB |
4171 | mutex_lock(&local->iflist_mtx); |
4172 | ieee80211_recalc_ps(local, latency_usec); | |
4173 | mutex_unlock(&local->iflist_mtx); | |
dfe67012 | 4174 | |
8bd811aa | 4175 | return NOTIFY_OK; |
9c6bd790 JB |
4176 | } |
4177 | ||
f2d9d270 JB |
4178 | static u8 ieee80211_ht_vht_rx_chains(struct ieee80211_sub_if_data *sdata, |
4179 | struct cfg80211_bss *cbss) | |
4180 | { | |
4181 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
4182 | const u8 *ht_cap_ie, *vht_cap_ie; | |
4183 | const struct ieee80211_ht_cap *ht_cap; | |
4184 | const struct ieee80211_vht_cap *vht_cap; | |
4185 | u8 chains = 1; | |
4186 | ||
4187 | if (ifmgd->flags & IEEE80211_STA_DISABLE_HT) | |
4188 | return chains; | |
4189 | ||
9caf0364 | 4190 | ht_cap_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_HT_CAPABILITY); |
f2d9d270 JB |
4191 | if (ht_cap_ie && ht_cap_ie[1] >= sizeof(*ht_cap)) { |
4192 | ht_cap = (void *)(ht_cap_ie + 2); | |
4193 | chains = ieee80211_mcs_to_chains(&ht_cap->mcs); | |
4194 | /* | |
4195 | * TODO: use "Tx Maximum Number Spatial Streams Supported" and | |
4196 | * "Tx Unequal Modulation Supported" fields. | |
4197 | */ | |
4198 | } | |
4199 | ||
4200 | if (ifmgd->flags & IEEE80211_STA_DISABLE_VHT) | |
4201 | return chains; | |
4202 | ||
9caf0364 | 4203 | vht_cap_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_VHT_CAPABILITY); |
f2d9d270 JB |
4204 | if (vht_cap_ie && vht_cap_ie[1] >= sizeof(*vht_cap)) { |
4205 | u8 nss; | |
4206 | u16 tx_mcs_map; | |
4207 | ||
4208 | vht_cap = (void *)(vht_cap_ie + 2); | |
4209 | tx_mcs_map = le16_to_cpu(vht_cap->supp_mcs.tx_mcs_map); | |
4210 | for (nss = 8; nss > 0; nss--) { | |
4211 | if (((tx_mcs_map >> (2 * (nss - 1))) & 3) != | |
4212 | IEEE80211_VHT_MCS_NOT_SUPPORTED) | |
4213 | break; | |
4214 | } | |
4215 | /* TODO: use "Tx Highest Supported Long GI Data Rate" field? */ | |
4216 | chains = max(chains, nss); | |
4217 | } | |
4218 | ||
4219 | return chains; | |
4220 | } | |
4221 | ||
b17166a7 JB |
4222 | static int ieee80211_prep_channel(struct ieee80211_sub_if_data *sdata, |
4223 | struct cfg80211_bss *cbss) | |
a1cf775d JB |
4224 | { |
4225 | struct ieee80211_local *local = sdata->local; | |
4226 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
53b954ee | 4227 | const struct ieee80211_ht_cap *ht_cap = NULL; |
24398e39 | 4228 | const struct ieee80211_ht_operation *ht_oper = NULL; |
f2d9d270 | 4229 | const struct ieee80211_vht_operation *vht_oper = NULL; |
24398e39 | 4230 | struct ieee80211_supported_band *sband; |
4bf88530 | 4231 | struct cfg80211_chan_def chandef; |
f2d9d270 | 4232 | int ret; |
a1cf775d | 4233 | |
24398e39 JB |
4234 | sband = local->hw.wiphy->bands[cbss->channel->band]; |
4235 | ||
f2d9d270 JB |
4236 | ifmgd->flags &= ~(IEEE80211_STA_DISABLE_40MHZ | |
4237 | IEEE80211_STA_DISABLE_80P80MHZ | | |
4238 | IEEE80211_STA_DISABLE_160MHZ); | |
4239 | ||
9caf0364 JB |
4240 | rcu_read_lock(); |
4241 | ||
f2d9d270 JB |
4242 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT) && |
4243 | sband->ht_cap.ht_supported) { | |
53b954ee | 4244 | const u8 *ht_oper_ie, *ht_cap_ie; |
24398e39 | 4245 | |
9caf0364 | 4246 | ht_oper_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_HT_OPERATION); |
24398e39 JB |
4247 | if (ht_oper_ie && ht_oper_ie[1] >= sizeof(*ht_oper)) |
4248 | ht_oper = (void *)(ht_oper_ie + 2); | |
08e6effa | 4249 | |
53b954ee EP |
4250 | ht_cap_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_HT_CAPABILITY); |
4251 | if (ht_cap_ie && ht_cap_ie[1] >= sizeof(*ht_cap)) | |
4252 | ht_cap = (void *)(ht_cap_ie + 2); | |
4253 | ||
4254 | if (!ht_cap) { | |
08e6effa JB |
4255 | ifmgd->flags |= IEEE80211_STA_DISABLE_HT; |
4256 | ht_oper = NULL; | |
4257 | } | |
24398e39 JB |
4258 | } |
4259 | ||
f2d9d270 JB |
4260 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) && |
4261 | sband->vht_cap.vht_supported) { | |
08e6effa | 4262 | const u8 *vht_oper_ie, *vht_cap; |
f2d9d270 | 4263 | |
9caf0364 JB |
4264 | vht_oper_ie = ieee80211_bss_get_ie(cbss, |
4265 | WLAN_EID_VHT_OPERATION); | |
f2d9d270 JB |
4266 | if (vht_oper_ie && vht_oper_ie[1] >= sizeof(*vht_oper)) |
4267 | vht_oper = (void *)(vht_oper_ie + 2); | |
4268 | if (vht_oper && !ht_oper) { | |
4269 | vht_oper = NULL; | |
bdcbd8e0 | 4270 | sdata_info(sdata, |
f2d9d270 | 4271 | "AP advertised VHT without HT, disabling both\n"); |
cb145022 JB |
4272 | ifmgd->flags |= IEEE80211_STA_DISABLE_HT; |
4273 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; | |
24398e39 | 4274 | } |
08e6effa JB |
4275 | |
4276 | vht_cap = ieee80211_bss_get_ie(cbss, WLAN_EID_VHT_CAPABILITY); | |
4277 | if (!vht_cap || vht_cap[1] < sizeof(struct ieee80211_vht_cap)) { | |
4278 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; | |
4279 | vht_oper = NULL; | |
4280 | } | |
24398e39 JB |
4281 | } |
4282 | ||
f2d9d270 JB |
4283 | ifmgd->flags |= ieee80211_determine_chantype(sdata, sband, |
4284 | cbss->channel, | |
53b954ee | 4285 | ht_cap, ht_oper, vht_oper, |
5cdaed1e | 4286 | &chandef, false); |
04ecd257 | 4287 | |
f2d9d270 JB |
4288 | sdata->needed_rx_chains = min(ieee80211_ht_vht_rx_chains(sdata, cbss), |
4289 | local->rx_chains); | |
24398e39 | 4290 | |
9caf0364 JB |
4291 | rcu_read_unlock(); |
4292 | ||
04ecd257 JB |
4293 | /* will change later if needed */ |
4294 | sdata->smps_mode = IEEE80211_SMPS_OFF; | |
4295 | ||
34a3740d | 4296 | mutex_lock(&local->mtx); |
f2d9d270 JB |
4297 | /* |
4298 | * If this fails (possibly due to channel context sharing | |
4299 | * on incompatible channels, e.g. 80+80 and 160 sharing the | |
4300 | * same control channel) try to use a smaller bandwidth. | |
4301 | */ | |
4302 | ret = ieee80211_vif_use_channel(sdata, &chandef, | |
4303 | IEEE80211_CHANCTX_SHARED); | |
0418a445 SW |
4304 | |
4305 | /* don't downgrade for 5 and 10 MHz channels, though. */ | |
4306 | if (chandef.width == NL80211_CHAN_WIDTH_5 || | |
4307 | chandef.width == NL80211_CHAN_WIDTH_10) | |
34a3740d | 4308 | goto out; |
0418a445 | 4309 | |
d601cd8d | 4310 | while (ret && chandef.width != NL80211_CHAN_WIDTH_20_NOHT) { |
e6b7cde4 | 4311 | ifmgd->flags |= ieee80211_chandef_downgrade(&chandef); |
d601cd8d JB |
4312 | ret = ieee80211_vif_use_channel(sdata, &chandef, |
4313 | IEEE80211_CHANCTX_SHARED); | |
4314 | } | |
34a3740d JB |
4315 | out: |
4316 | mutex_unlock(&local->mtx); | |
f2d9d270 | 4317 | return ret; |
b17166a7 JB |
4318 | } |
4319 | ||
4320 | static int ieee80211_prep_connection(struct ieee80211_sub_if_data *sdata, | |
c1041f10 CRI |
4321 | struct cfg80211_bss *cbss, bool assoc, |
4322 | bool override) | |
b17166a7 JB |
4323 | { |
4324 | struct ieee80211_local *local = sdata->local; | |
4325 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
4326 | struct ieee80211_bss *bss = (void *)cbss->priv; | |
4327 | struct sta_info *new_sta = NULL; | |
179b8fc7 | 4328 | struct ieee80211_supported_band *sband; |
c1041f10 | 4329 | bool have_sta = false; |
b17166a7 JB |
4330 | int err; |
4331 | ||
179b8fc7 CRI |
4332 | sband = local->hw.wiphy->bands[cbss->channel->band]; |
4333 | ||
b17166a7 JB |
4334 | if (WARN_ON(!ifmgd->auth_data && !ifmgd->assoc_data)) |
4335 | return -EINVAL; | |
4336 | ||
4337 | if (assoc) { | |
4338 | rcu_read_lock(); | |
4339 | have_sta = sta_info_get(sdata, cbss->bssid); | |
4340 | rcu_read_unlock(); | |
4341 | } | |
4342 | ||
4343 | if (!have_sta) { | |
4344 | new_sta = sta_info_alloc(sdata, cbss->bssid, GFP_KERNEL); | |
4345 | if (!new_sta) | |
4346 | return -ENOMEM; | |
4347 | } | |
179b8fc7 | 4348 | |
c1041f10 | 4349 | if (new_sta || override) { |
179b8fc7 CRI |
4350 | err = ieee80211_prep_channel(sdata, cbss); |
4351 | if (err) { | |
4352 | if (new_sta) | |
4353 | sta_info_free(local, new_sta); | |
4354 | return -EINVAL; | |
4355 | } | |
4356 | } | |
4357 | ||
13e0c8e3 | 4358 | if (new_sta) { |
5d6a1b06 JB |
4359 | u32 rates = 0, basic_rates = 0; |
4360 | bool have_higher_than_11mbit; | |
4361 | int min_rate = INT_MAX, min_rate_index = -1; | |
2103dec1 | 4362 | struct ieee80211_chanctx_conf *chanctx_conf; |
8cef2c9d | 4363 | const struct cfg80211_bss_ies *ies; |
179b8fc7 | 4364 | int shift = ieee80211_vif_get_shift(&sdata->vif); |
2103dec1 | 4365 | u32 rate_flags; |
b17166a7 | 4366 | |
2103dec1 SW |
4367 | rcu_read_lock(); |
4368 | chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); | |
4369 | if (WARN_ON(!chanctx_conf)) { | |
4370 | rcu_read_unlock(); | |
c368ddaa | 4371 | sta_info_free(local, new_sta); |
2103dec1 SW |
4372 | return -EINVAL; |
4373 | } | |
4374 | rate_flags = ieee80211_chandef_rate_flags(&chanctx_conf->def); | |
4375 | rcu_read_unlock(); | |
5d6a1b06 | 4376 | |
5d6a1b06 JB |
4377 | ieee80211_get_rates(sband, bss->supp_rates, |
4378 | bss->supp_rates_len, | |
4379 | &rates, &basic_rates, | |
4380 | &have_higher_than_11mbit, | |
2103dec1 SW |
4381 | &min_rate, &min_rate_index, |
4382 | shift, rate_flags); | |
5d6a1b06 JB |
4383 | |
4384 | /* | |
4385 | * This used to be a workaround for basic rates missing | |
4386 | * in the association response frame. Now that we no | |
4387 | * longer use the basic rates from there, it probably | |
4388 | * doesn't happen any more, but keep the workaround so | |
4389 | * in case some *other* APs are buggy in different ways | |
4390 | * we can connect -- with a warning. | |
4391 | */ | |
4392 | if (!basic_rates && min_rate_index >= 0) { | |
bdcbd8e0 JB |
4393 | sdata_info(sdata, |
4394 | "No basic rates, using min rate instead\n"); | |
5d6a1b06 JB |
4395 | basic_rates = BIT(min_rate_index); |
4396 | } | |
4397 | ||
13e0c8e3 | 4398 | new_sta->sta.supp_rates[cbss->channel->band] = rates; |
5d6a1b06 JB |
4399 | sdata->vif.bss_conf.basic_rates = basic_rates; |
4400 | ||
4401 | /* cf. IEEE 802.11 9.2.12 */ | |
55de908a | 4402 | if (cbss->channel->band == IEEE80211_BAND_2GHZ && |
5d6a1b06 JB |
4403 | have_higher_than_11mbit) |
4404 | sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE; | |
4405 | else | |
4406 | sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE; | |
4407 | ||
4408 | memcpy(ifmgd->bssid, cbss->bssid, ETH_ALEN); | |
4409 | ||
8c358bcd JB |
4410 | /* set timing information */ |
4411 | sdata->vif.bss_conf.beacon_int = cbss->beacon_interval; | |
8cef2c9d | 4412 | rcu_read_lock(); |
ef429dad JB |
4413 | ies = rcu_dereference(cbss->beacon_ies); |
4414 | if (ies) { | |
4415 | const u8 *tim_ie; | |
4416 | ||
4417 | sdata->vif.bss_conf.sync_tsf = ies->tsf; | |
4418 | sdata->vif.bss_conf.sync_device_ts = | |
4419 | bss->device_ts_beacon; | |
4420 | tim_ie = cfg80211_find_ie(WLAN_EID_TIM, | |
4421 | ies->data, ies->len); | |
4422 | if (tim_ie && tim_ie[1] >= 2) | |
4423 | sdata->vif.bss_conf.sync_dtim_count = tim_ie[2]; | |
4424 | else | |
4425 | sdata->vif.bss_conf.sync_dtim_count = 0; | |
30686bf7 JB |
4426 | } else if (!ieee80211_hw_check(&sdata->local->hw, |
4427 | TIMING_BEACON_ONLY)) { | |
ef429dad JB |
4428 | ies = rcu_dereference(cbss->proberesp_ies); |
4429 | /* must be non-NULL since beacon IEs were NULL */ | |
4430 | sdata->vif.bss_conf.sync_tsf = ies->tsf; | |
4431 | sdata->vif.bss_conf.sync_device_ts = | |
4432 | bss->device_ts_presp; | |
4433 | sdata->vif.bss_conf.sync_dtim_count = 0; | |
4434 | } else { | |
4435 | sdata->vif.bss_conf.sync_tsf = 0; | |
4436 | sdata->vif.bss_conf.sync_device_ts = 0; | |
4437 | sdata->vif.bss_conf.sync_dtim_count = 0; | |
4438 | } | |
8cef2c9d | 4439 | rcu_read_unlock(); |
8c358bcd JB |
4440 | |
4441 | /* tell driver about BSSID, basic rates and timing */ | |
5d6a1b06 | 4442 | ieee80211_bss_info_change_notify(sdata, |
8c358bcd JB |
4443 | BSS_CHANGED_BSSID | BSS_CHANGED_BASIC_RATES | |
4444 | BSS_CHANGED_BEACON_INT); | |
a1cf775d JB |
4445 | |
4446 | if (assoc) | |
13e0c8e3 | 4447 | sta_info_pre_move_state(new_sta, IEEE80211_STA_AUTH); |
a1cf775d | 4448 | |
13e0c8e3 JB |
4449 | err = sta_info_insert(new_sta); |
4450 | new_sta = NULL; | |
a1cf775d | 4451 | if (err) { |
bdcbd8e0 JB |
4452 | sdata_info(sdata, |
4453 | "failed to insert STA entry for the AP (error %d)\n", | |
4454 | err); | |
a1cf775d JB |
4455 | return err; |
4456 | } | |
4457 | } else | |
b203ca39 | 4458 | WARN_ON_ONCE(!ether_addr_equal(ifmgd->bssid, cbss->bssid)); |
a1cf775d | 4459 | |
7d830a19 DS |
4460 | /* Cancel scan to ensure that nothing interferes with connection */ |
4461 | if (local->scanning) | |
4462 | ieee80211_scan_cancel(local); | |
4463 | ||
a1cf775d JB |
4464 | return 0; |
4465 | } | |
4466 | ||
77fdaa12 JB |
4467 | /* config hooks */ |
4468 | int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, | |
4469 | struct cfg80211_auth_request *req) | |
9c6bd790 | 4470 | { |
66e67e41 JB |
4471 | struct ieee80211_local *local = sdata->local; |
4472 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
4473 | struct ieee80211_mgd_auth_data *auth_data; | |
77fdaa12 | 4474 | u16 auth_alg; |
66e67e41 JB |
4475 | int err; |
4476 | ||
4477 | /* prepare auth data structure */ | |
9c6bd790 | 4478 | |
77fdaa12 JB |
4479 | switch (req->auth_type) { |
4480 | case NL80211_AUTHTYPE_OPEN_SYSTEM: | |
4481 | auth_alg = WLAN_AUTH_OPEN; | |
4482 | break; | |
4483 | case NL80211_AUTHTYPE_SHARED_KEY: | |
66e67e41 | 4484 | if (IS_ERR(local->wep_tx_tfm)) |
9dca9c49 | 4485 | return -EOPNOTSUPP; |
77fdaa12 JB |
4486 | auth_alg = WLAN_AUTH_SHARED_KEY; |
4487 | break; | |
4488 | case NL80211_AUTHTYPE_FT: | |
4489 | auth_alg = WLAN_AUTH_FT; | |
4490 | break; | |
4491 | case NL80211_AUTHTYPE_NETWORK_EAP: | |
4492 | auth_alg = WLAN_AUTH_LEAP; | |
4493 | break; | |
6b8ece3a JM |
4494 | case NL80211_AUTHTYPE_SAE: |
4495 | auth_alg = WLAN_AUTH_SAE; | |
4496 | break; | |
77fdaa12 JB |
4497 | default: |
4498 | return -EOPNOTSUPP; | |
60f8b39c | 4499 | } |
77fdaa12 | 4500 | |
6b8ece3a JM |
4501 | auth_data = kzalloc(sizeof(*auth_data) + req->sae_data_len + |
4502 | req->ie_len, GFP_KERNEL); | |
66e67e41 | 4503 | if (!auth_data) |
9c6bd790 | 4504 | return -ENOMEM; |
77fdaa12 | 4505 | |
66e67e41 | 4506 | auth_data->bss = req->bss; |
77fdaa12 | 4507 | |
6b8ece3a JM |
4508 | if (req->sae_data_len >= 4) { |
4509 | __le16 *pos = (__le16 *) req->sae_data; | |
4510 | auth_data->sae_trans = le16_to_cpu(pos[0]); | |
4511 | auth_data->sae_status = le16_to_cpu(pos[1]); | |
4512 | memcpy(auth_data->data, req->sae_data + 4, | |
4513 | req->sae_data_len - 4); | |
4514 | auth_data->data_len += req->sae_data_len - 4; | |
4515 | } | |
4516 | ||
77fdaa12 | 4517 | if (req->ie && req->ie_len) { |
6b8ece3a JM |
4518 | memcpy(&auth_data->data[auth_data->data_len], |
4519 | req->ie, req->ie_len); | |
4520 | auth_data->data_len += req->ie_len; | |
9c6bd790 | 4521 | } |
77fdaa12 | 4522 | |
fffd0934 | 4523 | if (req->key && req->key_len) { |
66e67e41 JB |
4524 | auth_data->key_len = req->key_len; |
4525 | auth_data->key_idx = req->key_idx; | |
4526 | memcpy(auth_data->key, req->key, req->key_len); | |
fffd0934 JB |
4527 | } |
4528 | ||
66e67e41 | 4529 | auth_data->algorithm = auth_alg; |
60f8b39c | 4530 | |
66e67e41 | 4531 | /* try to authenticate/probe */ |
2a33bee2 | 4532 | |
66e67e41 JB |
4533 | if ((ifmgd->auth_data && !ifmgd->auth_data->done) || |
4534 | ifmgd->assoc_data) { | |
4535 | err = -EBUSY; | |
4536 | goto err_free; | |
2a33bee2 GE |
4537 | } |
4538 | ||
66e67e41 JB |
4539 | if (ifmgd->auth_data) |
4540 | ieee80211_destroy_auth_data(sdata, false); | |
2a33bee2 | 4541 | |
66e67e41 JB |
4542 | /* prep auth_data so we don't go into idle on disassoc */ |
4543 | ifmgd->auth_data = auth_data; | |
af6b6374 | 4544 | |
7b119dc0 JB |
4545 | if (ifmgd->associated) { |
4546 | u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN]; | |
4547 | ||
4548 | ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, | |
4549 | WLAN_REASON_UNSPECIFIED, | |
4550 | false, frame_buf); | |
4551 | ||
a90faa9d EG |
4552 | ieee80211_report_disconnect(sdata, frame_buf, |
4553 | sizeof(frame_buf), true, | |
4554 | WLAN_REASON_UNSPECIFIED); | |
7b119dc0 | 4555 | } |
af6b6374 | 4556 | |
bdcbd8e0 | 4557 | sdata_info(sdata, "authenticate with %pM\n", req->bss->bssid); |
e5b900d2 | 4558 | |
c1041f10 | 4559 | err = ieee80211_prep_connection(sdata, req->bss, false, false); |
a1cf775d | 4560 | if (err) |
66e67e41 | 4561 | goto err_clear; |
af6b6374 | 4562 | |
46cad4b7 | 4563 | err = ieee80211_auth(sdata); |
66e67e41 | 4564 | if (err) { |
66e67e41 JB |
4565 | sta_info_destroy_addr(sdata, req->bss->bssid); |
4566 | goto err_clear; | |
4567 | } | |
4568 | ||
4569 | /* hold our own reference */ | |
5b112d3d | 4570 | cfg80211_ref_bss(local->hw.wiphy, auth_data->bss); |
8d61ffa5 | 4571 | return 0; |
66e67e41 JB |
4572 | |
4573 | err_clear: | |
c84a67a2 | 4574 | eth_zero_addr(ifmgd->bssid); |
3d2abdfd | 4575 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID); |
66e67e41 | 4576 | ifmgd->auth_data = NULL; |
d01f858c MK |
4577 | mutex_lock(&sdata->local->mtx); |
4578 | ieee80211_vif_release_channel(sdata); | |
4579 | mutex_unlock(&sdata->local->mtx); | |
66e67e41 JB |
4580 | err_free: |
4581 | kfree(auth_data); | |
66e67e41 | 4582 | return err; |
af6b6374 JB |
4583 | } |
4584 | ||
095d81ce JB |
4585 | static bool ieee80211_usable_wmm_params(struct ieee80211_sub_if_data *sdata, |
4586 | const u8 *wmm_param, int len) | |
4587 | { | |
4588 | const u8 *pos; | |
4589 | size_t left; | |
4590 | ||
4591 | if (len < 8) | |
4592 | return false; | |
4593 | ||
4594 | if (wmm_param[5] != 1 /* version */) | |
4595 | return false; | |
4596 | ||
4597 | pos = wmm_param + 8; | |
4598 | left = len - 8; | |
4599 | ||
4600 | for (; left >= 4; left -= 4, pos += 4) { | |
4601 | u8 aifsn = pos[0] & 0x0f; | |
4602 | u8 ecwmin = pos[1] & 0x0f; | |
4603 | u8 ecwmax = (pos[1] & 0xf0) >> 4; | |
4604 | int aci = (pos[0] >> 5) & 0x03; | |
4605 | ||
4606 | if (aifsn < 2) { | |
4607 | sdata_info(sdata, | |
4608 | "AP has invalid WMM params (AIFSN=%d for ACI %d), disabling WMM\n", | |
4609 | aifsn, aci); | |
4610 | return false; | |
4611 | } | |
4612 | if (ecwmin > ecwmax) { | |
4613 | sdata_info(sdata, | |
4614 | "AP has invalid WMM params (ECWmin/max=%d/%d for ACI %d), disabling WMM\n", | |
4615 | ecwmin, ecwmax, aci); | |
4616 | return false; | |
4617 | } | |
4618 | } | |
4619 | ||
4620 | return true; | |
4621 | } | |
4622 | ||
77fdaa12 JB |
4623 | int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, |
4624 | struct cfg80211_assoc_request *req) | |
f0706e82 | 4625 | { |
66e67e41 | 4626 | struct ieee80211_local *local = sdata->local; |
77fdaa12 | 4627 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
0c1ad2ca | 4628 | struct ieee80211_bss *bss = (void *)req->bss->priv; |
66e67e41 | 4629 | struct ieee80211_mgd_assoc_data *assoc_data; |
c65dd147 | 4630 | const struct cfg80211_bss_ies *beacon_ies; |
4e74bfdb | 4631 | struct ieee80211_supported_band *sband; |
b08fbbd8 | 4632 | const u8 *ssidie, *ht_ie, *vht_ie; |
2a33bee2 | 4633 | int i, err; |
c1041f10 | 4634 | bool override = false; |
f0706e82 | 4635 | |
66e67e41 JB |
4636 | assoc_data = kzalloc(sizeof(*assoc_data) + req->ie_len, GFP_KERNEL); |
4637 | if (!assoc_data) | |
4638 | return -ENOMEM; | |
4639 | ||
9caf0364 JB |
4640 | rcu_read_lock(); |
4641 | ssidie = ieee80211_bss_get_ie(req->bss, WLAN_EID_SSID); | |
4642 | if (!ssidie) { | |
4643 | rcu_read_unlock(); | |
4644 | kfree(assoc_data); | |
4645 | return -EINVAL; | |
4646 | } | |
4647 | memcpy(assoc_data->ssid, ssidie + 2, ssidie[1]); | |
4648 | assoc_data->ssid_len = ssidie[1]; | |
4649 | rcu_read_unlock(); | |
4650 | ||
7b119dc0 JB |
4651 | if (ifmgd->associated) { |
4652 | u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN]; | |
4653 | ||
4654 | ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, | |
4655 | WLAN_REASON_UNSPECIFIED, | |
4656 | false, frame_buf); | |
4657 | ||
a90faa9d EG |
4658 | ieee80211_report_disconnect(sdata, frame_buf, |
4659 | sizeof(frame_buf), true, | |
4660 | WLAN_REASON_UNSPECIFIED); | |
7b119dc0 | 4661 | } |
66e67e41 JB |
4662 | |
4663 | if (ifmgd->auth_data && !ifmgd->auth_data->done) { | |
4664 | err = -EBUSY; | |
4665 | goto err_free; | |
af6b6374 | 4666 | } |
77fdaa12 | 4667 | |
66e67e41 JB |
4668 | if (ifmgd->assoc_data) { |
4669 | err = -EBUSY; | |
4670 | goto err_free; | |
4671 | } | |
77fdaa12 | 4672 | |
66e67e41 JB |
4673 | if (ifmgd->auth_data) { |
4674 | bool match; | |
4675 | ||
4676 | /* keep sta info, bssid if matching */ | |
b203ca39 | 4677 | match = ether_addr_equal(ifmgd->bssid, req->bss->bssid); |
66e67e41 | 4678 | ieee80211_destroy_auth_data(sdata, match); |
2a33bee2 GE |
4679 | } |
4680 | ||
66e67e41 | 4681 | /* prepare assoc data */ |
095d81ce | 4682 | |
d8ec4433 JO |
4683 | ifmgd->beacon_crc_valid = false; |
4684 | ||
095d81ce JB |
4685 | assoc_data->wmm = bss->wmm_used && |
4686 | (local->hw.queues >= IEEE80211_NUM_ACS); | |
4687 | if (assoc_data->wmm) { | |
4688 | /* try to check validity of WMM params IE */ | |
4689 | const struct cfg80211_bss_ies *ies; | |
4690 | const u8 *wp, *start, *end; | |
4691 | ||
4692 | rcu_read_lock(); | |
4693 | ies = rcu_dereference(req->bss->ies); | |
4694 | start = ies->data; | |
4695 | end = start + ies->len; | |
4696 | ||
4697 | while (true) { | |
4698 | wp = cfg80211_find_vendor_ie( | |
4699 | WLAN_OUI_MICROSOFT, | |
4700 | WLAN_OUI_TYPE_MICROSOFT_WMM, | |
4701 | start, end - start); | |
4702 | if (!wp) | |
4703 | break; | |
4704 | start = wp + wp[1] + 2; | |
4705 | /* if this IE is too short, try the next */ | |
4706 | if (wp[1] <= 4) | |
4707 | continue; | |
4708 | /* if this IE is WMM params, we found what we wanted */ | |
4709 | if (wp[6] == 1) | |
4710 | break; | |
4711 | } | |
4712 | ||
4713 | if (!wp || !ieee80211_usable_wmm_params(sdata, wp + 2, | |
4714 | wp[1] - 2)) { | |
4715 | assoc_data->wmm = false; | |
4716 | ifmgd->flags |= IEEE80211_STA_DISABLE_WMM; | |
4717 | } | |
4718 | rcu_read_unlock(); | |
4719 | } | |
4720 | ||
de5036aa JB |
4721 | /* |
4722 | * IEEE802.11n does not allow TKIP/WEP as pairwise ciphers in HT mode. | |
4723 | * We still associate in non-HT mode (11a/b/g) if any one of these | |
4724 | * ciphers is configured as pairwise. | |
4725 | * We can set this to true for non-11n hardware, that'll be checked | |
4726 | * separately along with the peer capabilities. | |
4727 | */ | |
1c4cb928 | 4728 | for (i = 0; i < req->crypto.n_ciphers_pairwise; i++) { |
77fdaa12 JB |
4729 | if (req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_WEP40 || |
4730 | req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_TKIP || | |
1c4cb928 | 4731 | req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_WEP104) { |
a8243b72 | 4732 | ifmgd->flags |= IEEE80211_STA_DISABLE_HT; |
d545daba | 4733 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; |
1c4cb928 | 4734 | netdev_info(sdata->dev, |
d545daba | 4735 | "disabling HT/VHT due to WEP/TKIP use\n"); |
1c4cb928 JB |
4736 | } |
4737 | } | |
77fdaa12 | 4738 | |
4e74bfdb JB |
4739 | /* Also disable HT if we don't support it or the AP doesn't use WMM */ |
4740 | sband = local->hw.wiphy->bands[req->bss->channel->band]; | |
4741 | if (!sband->ht_cap.ht_supported || | |
095d81ce JB |
4742 | local->hw.queues < IEEE80211_NUM_ACS || !bss->wmm_used || |
4743 | ifmgd->flags & IEEE80211_STA_DISABLE_WMM) { | |
a8243b72 | 4744 | ifmgd->flags |= IEEE80211_STA_DISABLE_HT; |
095d81ce JB |
4745 | if (!bss->wmm_used && |
4746 | !(ifmgd->flags & IEEE80211_STA_DISABLE_WMM)) | |
1b49de26 JB |
4747 | netdev_info(sdata->dev, |
4748 | "disabling HT as WMM/QoS is not supported by the AP\n"); | |
1c4cb928 | 4749 | } |
4e74bfdb | 4750 | |
d545daba MP |
4751 | /* disable VHT if we don't support it or the AP doesn't use WMM */ |
4752 | if (!sband->vht_cap.vht_supported || | |
095d81ce JB |
4753 | local->hw.queues < IEEE80211_NUM_ACS || !bss->wmm_used || |
4754 | ifmgd->flags & IEEE80211_STA_DISABLE_WMM) { | |
d545daba | 4755 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; |
095d81ce JB |
4756 | if (!bss->wmm_used && |
4757 | !(ifmgd->flags & IEEE80211_STA_DISABLE_WMM)) | |
1b49de26 JB |
4758 | netdev_info(sdata->dev, |
4759 | "disabling VHT as WMM/QoS is not supported by the AP\n"); | |
d545daba MP |
4760 | } |
4761 | ||
ef96a842 BG |
4762 | memcpy(&ifmgd->ht_capa, &req->ht_capa, sizeof(ifmgd->ht_capa)); |
4763 | memcpy(&ifmgd->ht_capa_mask, &req->ht_capa_mask, | |
4764 | sizeof(ifmgd->ht_capa_mask)); | |
4765 | ||
dd5ecfea JB |
4766 | memcpy(&ifmgd->vht_capa, &req->vht_capa, sizeof(ifmgd->vht_capa)); |
4767 | memcpy(&ifmgd->vht_capa_mask, &req->vht_capa_mask, | |
4768 | sizeof(ifmgd->vht_capa_mask)); | |
4769 | ||
77fdaa12 | 4770 | if (req->ie && req->ie_len) { |
66e67e41 JB |
4771 | memcpy(assoc_data->ie, req->ie, req->ie_len); |
4772 | assoc_data->ie_len = req->ie_len; | |
4773 | } | |
f679f65d | 4774 | |
66e67e41 | 4775 | assoc_data->bss = req->bss; |
f679f65d | 4776 | |
af6b6374 JB |
4777 | if (ifmgd->req_smps == IEEE80211_SMPS_AUTOMATIC) { |
4778 | if (ifmgd->powersave) | |
04ecd257 | 4779 | sdata->smps_mode = IEEE80211_SMPS_DYNAMIC; |
af6b6374 | 4780 | else |
04ecd257 | 4781 | sdata->smps_mode = IEEE80211_SMPS_OFF; |
af6b6374 | 4782 | } else |
04ecd257 | 4783 | sdata->smps_mode = ifmgd->req_smps; |
af6b6374 | 4784 | |
66e67e41 | 4785 | assoc_data->capability = req->bss->capability; |
66e67e41 JB |
4786 | assoc_data->supp_rates = bss->supp_rates; |
4787 | assoc_data->supp_rates_len = bss->supp_rates_len; | |
9dde6423 | 4788 | |
9caf0364 | 4789 | rcu_read_lock(); |
9dde6423 JB |
4790 | ht_ie = ieee80211_bss_get_ie(req->bss, WLAN_EID_HT_OPERATION); |
4791 | if (ht_ie && ht_ie[1] >= sizeof(struct ieee80211_ht_operation)) | |
4792 | assoc_data->ap_ht_param = | |
4793 | ((struct ieee80211_ht_operation *)(ht_ie + 2))->ht_param; | |
4794 | else | |
a8243b72 | 4795 | ifmgd->flags |= IEEE80211_STA_DISABLE_HT; |
b08fbbd8 JB |
4796 | vht_ie = ieee80211_bss_get_ie(req->bss, WLAN_EID_VHT_CAPABILITY); |
4797 | if (vht_ie && vht_ie[1] >= sizeof(struct ieee80211_vht_cap)) | |
4798 | memcpy(&assoc_data->ap_vht_cap, vht_ie + 2, | |
4799 | sizeof(struct ieee80211_vht_cap)); | |
4800 | else | |
4801 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; | |
9caf0364 | 4802 | rcu_read_unlock(); |
63f170e0 | 4803 | |
848955cc | 4804 | if (WARN((sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_UAPSD) && |
30686bf7 | 4805 | ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK), |
848955cc JB |
4806 | "U-APSD not supported with HW_PS_NULLFUNC_STACK\n")) |
4807 | sdata->vif.driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD; | |
4808 | ||
ab13315a | 4809 | if (bss->wmm_used && bss->uapsd_supported && |
848955cc | 4810 | (sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_UAPSD)) { |
76f0303d | 4811 | assoc_data->uapsd = true; |
ab13315a KV |
4812 | ifmgd->flags |= IEEE80211_STA_UAPSD_ENABLED; |
4813 | } else { | |
76f0303d | 4814 | assoc_data->uapsd = false; |
ab13315a KV |
4815 | ifmgd->flags &= ~IEEE80211_STA_UAPSD_ENABLED; |
4816 | } | |
4817 | ||
77fdaa12 | 4818 | if (req->prev_bssid) |
66e67e41 | 4819 | memcpy(assoc_data->prev_bssid, req->prev_bssid, ETH_ALEN); |
77fdaa12 JB |
4820 | |
4821 | if (req->use_mfp) { | |
4822 | ifmgd->mfp = IEEE80211_MFP_REQUIRED; | |
4823 | ifmgd->flags |= IEEE80211_STA_MFP_ENABLED; | |
4824 | } else { | |
4825 | ifmgd->mfp = IEEE80211_MFP_DISABLED; | |
4826 | ifmgd->flags &= ~IEEE80211_STA_MFP_ENABLED; | |
4827 | } | |
4828 | ||
cd2f5dd7 AK |
4829 | if (req->flags & ASSOC_REQ_USE_RRM) |
4830 | ifmgd->flags |= IEEE80211_STA_ENABLE_RRM; | |
4831 | else | |
4832 | ifmgd->flags &= ~IEEE80211_STA_ENABLE_RRM; | |
4833 | ||
77fdaa12 JB |
4834 | if (req->crypto.control_port) |
4835 | ifmgd->flags |= IEEE80211_STA_CONTROL_PORT; | |
4836 | else | |
4837 | ifmgd->flags &= ~IEEE80211_STA_CONTROL_PORT; | |
4838 | ||
a621fa4d JB |
4839 | sdata->control_port_protocol = req->crypto.control_port_ethertype; |
4840 | sdata->control_port_no_encrypt = req->crypto.control_port_no_encrypt; | |
2475b1cc MS |
4841 | sdata->encrypt_headroom = ieee80211_cs_headroom(local, &req->crypto, |
4842 | sdata->vif.type); | |
a621fa4d | 4843 | |
66e67e41 JB |
4844 | /* kick off associate process */ |
4845 | ||
4846 | ifmgd->assoc_data = assoc_data; | |
826262c3 | 4847 | ifmgd->dtim_period = 0; |
989c6505 | 4848 | ifmgd->have_beacon = false; |
66e67e41 | 4849 | |
c1041f10 CRI |
4850 | /* override HT/VHT configuration only if the AP and we support it */ |
4851 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) { | |
4852 | struct ieee80211_sta_ht_cap sta_ht_cap; | |
4853 | ||
4854 | if (req->flags & ASSOC_REQ_DISABLE_HT) | |
4855 | override = true; | |
4856 | ||
4857 | memcpy(&sta_ht_cap, &sband->ht_cap, sizeof(sta_ht_cap)); | |
4858 | ieee80211_apply_htcap_overrides(sdata, &sta_ht_cap); | |
4859 | ||
4860 | /* check for 40 MHz disable override */ | |
4861 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_40MHZ) && | |
4862 | sband->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 && | |
4863 | !(sta_ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40)) | |
4864 | override = true; | |
4865 | ||
4866 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) && | |
4867 | req->flags & ASSOC_REQ_DISABLE_VHT) | |
4868 | override = true; | |
4869 | } | |
4870 | ||
4871 | if (req->flags & ASSOC_REQ_DISABLE_HT) { | |
4872 | ifmgd->flags |= IEEE80211_STA_DISABLE_HT; | |
4873 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; | |
4874 | } | |
4875 | ||
4876 | if (req->flags & ASSOC_REQ_DISABLE_VHT) | |
4877 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; | |
4878 | ||
4879 | err = ieee80211_prep_connection(sdata, req->bss, true, override); | |
a1cf775d JB |
4880 | if (err) |
4881 | goto err_clear; | |
66e67e41 | 4882 | |
c65dd147 EG |
4883 | rcu_read_lock(); |
4884 | beacon_ies = rcu_dereference(req->bss->beacon_ies); | |
826262c3 | 4885 | |
30686bf7 | 4886 | if (ieee80211_hw_check(&sdata->local->hw, NEED_DTIM_BEFORE_ASSOC) && |
c65dd147 EG |
4887 | !beacon_ies) { |
4888 | /* | |
4889 | * Wait up to one beacon interval ... | |
4890 | * should this be more if we miss one? | |
4891 | */ | |
4892 | sdata_info(sdata, "waiting for beacon from %pM\n", | |
4893 | ifmgd->bssid); | |
4894 | assoc_data->timeout = TU_TO_EXP_TIME(req->bss->beacon_interval); | |
89afe614 | 4895 | assoc_data->timeout_started = true; |
c65dd147 EG |
4896 | assoc_data->need_beacon = true; |
4897 | } else if (beacon_ies) { | |
4898 | const u8 *tim_ie = cfg80211_find_ie(WLAN_EID_TIM, | |
4899 | beacon_ies->data, | |
4900 | beacon_ies->len); | |
ef429dad JB |
4901 | u8 dtim_count = 0; |
4902 | ||
c65dd147 EG |
4903 | if (tim_ie && tim_ie[1] >= sizeof(struct ieee80211_tim_ie)) { |
4904 | const struct ieee80211_tim_ie *tim; | |
4905 | tim = (void *)(tim_ie + 2); | |
4906 | ifmgd->dtim_period = tim->dtim_period; | |
ef429dad | 4907 | dtim_count = tim->dtim_count; |
826262c3 | 4908 | } |
989c6505 | 4909 | ifmgd->have_beacon = true; |
66e67e41 | 4910 | assoc_data->timeout = jiffies; |
89afe614 | 4911 | assoc_data->timeout_started = true; |
ef429dad | 4912 | |
30686bf7 | 4913 | if (ieee80211_hw_check(&local->hw, TIMING_BEACON_ONLY)) { |
ef429dad JB |
4914 | sdata->vif.bss_conf.sync_tsf = beacon_ies->tsf; |
4915 | sdata->vif.bss_conf.sync_device_ts = | |
4916 | bss->device_ts_beacon; | |
4917 | sdata->vif.bss_conf.sync_dtim_count = dtim_count; | |
4918 | } | |
c65dd147 EG |
4919 | } else { |
4920 | assoc_data->timeout = jiffies; | |
89afe614 | 4921 | assoc_data->timeout_started = true; |
66e67e41 | 4922 | } |
c65dd147 EG |
4923 | rcu_read_unlock(); |
4924 | ||
8d61ffa5 | 4925 | run_again(sdata, assoc_data->timeout); |
66e67e41 | 4926 | |
fcff4f10 PS |
4927 | if (bss->corrupt_data) { |
4928 | char *corrupt_type = "data"; | |
4929 | if (bss->corrupt_data & IEEE80211_BSS_CORRUPT_BEACON) { | |
4930 | if (bss->corrupt_data & | |
4931 | IEEE80211_BSS_CORRUPT_PROBE_RESP) | |
4932 | corrupt_type = "beacon and probe response"; | |
4933 | else | |
4934 | corrupt_type = "beacon"; | |
4935 | } else if (bss->corrupt_data & IEEE80211_BSS_CORRUPT_PROBE_RESP) | |
4936 | corrupt_type = "probe response"; | |
bdcbd8e0 JB |
4937 | sdata_info(sdata, "associating with AP with corrupt %s\n", |
4938 | corrupt_type); | |
fcff4f10 PS |
4939 | } |
4940 | ||
8d61ffa5 | 4941 | return 0; |
66e67e41 | 4942 | err_clear: |
c84a67a2 | 4943 | eth_zero_addr(ifmgd->bssid); |
3d2abdfd | 4944 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID); |
66e67e41 JB |
4945 | ifmgd->assoc_data = NULL; |
4946 | err_free: | |
4947 | kfree(assoc_data); | |
66e67e41 | 4948 | return err; |
f0706e82 JB |
4949 | } |
4950 | ||
77fdaa12 | 4951 | int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, |
63c9c5e7 | 4952 | struct cfg80211_deauth_request *req) |
f0706e82 | 4953 | { |
46900298 | 4954 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
6ae16775 | 4955 | u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN]; |
6863255b | 4956 | bool tx = !req->local_state_change; |
f0706e82 | 4957 | |
c9c3a060 JB |
4958 | if (ifmgd->auth_data && |
4959 | ether_addr_equal(ifmgd->auth_data->bss->bssid, req->bssid)) { | |
4960 | sdata_info(sdata, | |
4961 | "aborting authentication with %pM by local choice (Reason: %u=%s)\n", | |
4962 | req->bssid, req->reason_code, | |
4963 | ieee80211_get_reason_code_string(req->reason_code)); | |
0ff71613 | 4964 | |
8c7d857c | 4965 | drv_mgd_prepare_tx(sdata->local, sdata); |
37ad3888 JB |
4966 | ieee80211_send_deauth_disassoc(sdata, req->bssid, |
4967 | IEEE80211_STYPE_DEAUTH, | |
6863255b | 4968 | req->reason_code, tx, |
37ad3888 | 4969 | frame_buf); |
86552017 | 4970 | ieee80211_destroy_auth_data(sdata, false); |
a90faa9d EG |
4971 | ieee80211_report_disconnect(sdata, frame_buf, |
4972 | sizeof(frame_buf), true, | |
4973 | req->reason_code); | |
86552017 | 4974 | |
c9c3a060 | 4975 | return 0; |
8c7d857c EG |
4976 | } |
4977 | ||
86552017 JB |
4978 | if (ifmgd->associated && |
4979 | ether_addr_equal(ifmgd->associated->bssid, req->bssid)) { | |
c9c3a060 JB |
4980 | sdata_info(sdata, |
4981 | "deauthenticating from %pM by local choice (Reason: %u=%s)\n", | |
4982 | req->bssid, req->reason_code, | |
4983 | ieee80211_get_reason_code_string(req->reason_code)); | |
4984 | ||
86552017 JB |
4985 | ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, |
4986 | req->reason_code, tx, frame_buf); | |
a90faa9d EG |
4987 | ieee80211_report_disconnect(sdata, frame_buf, |
4988 | sizeof(frame_buf), true, | |
4989 | req->reason_code); | |
c9c3a060 JB |
4990 | return 0; |
4991 | } | |
86552017 | 4992 | |
c9c3a060 | 4993 | return -ENOTCONN; |
f0706e82 | 4994 | } |
84363e6e | 4995 | |
77fdaa12 | 4996 | int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, |
63c9c5e7 | 4997 | struct cfg80211_disassoc_request *req) |
9c6bd790 | 4998 | { |
77fdaa12 | 4999 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
e69e95db | 5000 | u8 bssid[ETH_ALEN]; |
6ae16775 | 5001 | u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN]; |
9c6bd790 | 5002 | |
8d8b261a JB |
5003 | /* |
5004 | * cfg80211 should catch this ... but it's racy since | |
5005 | * we can receive a disassoc frame, process it, hand it | |
5006 | * to cfg80211 while that's in a locked section already | |
5007 | * trying to tell us that the user wants to disconnect. | |
5008 | */ | |
8d61ffa5 | 5009 | if (ifmgd->associated != req->bss) |
77fdaa12 | 5010 | return -ENOLINK; |
77fdaa12 | 5011 | |
bdcbd8e0 | 5012 | sdata_info(sdata, |
dfa1ad29 CO |
5013 | "disassociating from %pM by local choice (Reason: %u=%s)\n", |
5014 | req->bss->bssid, req->reason_code, ieee80211_get_reason_code_string(req->reason_code)); | |
0ff71613 | 5015 | |
e69e95db | 5016 | memcpy(bssid, req->bss->bssid, ETH_ALEN); |
37ad3888 JB |
5017 | ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DISASSOC, |
5018 | req->reason_code, !req->local_state_change, | |
5019 | frame_buf); | |
10f644a4 | 5020 | |
a90faa9d EG |
5021 | ieee80211_report_disconnect(sdata, frame_buf, sizeof(frame_buf), true, |
5022 | req->reason_code); | |
bc83b681 | 5023 | |
10f644a4 JB |
5024 | return 0; |
5025 | } | |
026331c4 | 5026 | |
afa762f6 | 5027 | void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata) |
54e4ffb2 JB |
5028 | { |
5029 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
5030 | ||
49921859 BG |
5031 | /* |
5032 | * Make sure some work items will not run after this, | |
5033 | * they will not do anything but might not have been | |
5034 | * cancelled when disconnecting. | |
5035 | */ | |
5036 | cancel_work_sync(&ifmgd->monitor_work); | |
5037 | cancel_work_sync(&ifmgd->beacon_connection_loss_work); | |
5038 | cancel_work_sync(&ifmgd->request_smps_work); | |
5039 | cancel_work_sync(&ifmgd->csa_connection_drop_work); | |
5040 | cancel_work_sync(&ifmgd->chswitch_work); | |
81dd2b88 | 5041 | cancel_delayed_work_sync(&ifmgd->tdls_peer_del_work); |
49921859 | 5042 | |
8d61ffa5 | 5043 | sdata_lock(sdata); |
959867fa JB |
5044 | if (ifmgd->assoc_data) { |
5045 | struct cfg80211_bss *bss = ifmgd->assoc_data->bss; | |
54e4ffb2 | 5046 | ieee80211_destroy_assoc_data(sdata, false); |
959867fa JB |
5047 | cfg80211_assoc_timeout(sdata->dev, bss); |
5048 | } | |
54e4ffb2 JB |
5049 | if (ifmgd->auth_data) |
5050 | ieee80211_destroy_auth_data(sdata, false); | |
1277b4a9 LK |
5051 | spin_lock_bh(&ifmgd->teardown_lock); |
5052 | if (ifmgd->teardown_skb) { | |
5053 | kfree_skb(ifmgd->teardown_skb); | |
5054 | ifmgd->teardown_skb = NULL; | |
5055 | ifmgd->orig_teardown_skb = NULL; | |
5056 | } | |
5057 | spin_unlock_bh(&ifmgd->teardown_lock); | |
54e4ffb2 | 5058 | del_timer_sync(&ifmgd->timer); |
8d61ffa5 | 5059 | sdata_unlock(sdata); |
54e4ffb2 JB |
5060 | } |
5061 | ||
a97c13c3 JO |
5062 | void ieee80211_cqm_rssi_notify(struct ieee80211_vif *vif, |
5063 | enum nl80211_cqm_rssi_threshold_event rssi_event, | |
5064 | gfp_t gfp) | |
5065 | { | |
5066 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
5067 | ||
b5878a2d JB |
5068 | trace_api_cqm_rssi_notify(sdata, rssi_event); |
5069 | ||
a97c13c3 JO |
5070 | cfg80211_cqm_rssi_notify(sdata->dev, rssi_event, gfp); |
5071 | } | |
5072 | EXPORT_SYMBOL(ieee80211_cqm_rssi_notify); | |
98f03342 JB |
5073 | |
5074 | void ieee80211_cqm_beacon_loss_notify(struct ieee80211_vif *vif, gfp_t gfp) | |
5075 | { | |
5076 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
5077 | ||
5078 | trace_api_cqm_beacon_loss_notify(sdata->local, sdata); | |
5079 | ||
5080 | cfg80211_cqm_beacon_loss_notify(sdata->dev, gfp); | |
5081 | } | |
5082 | EXPORT_SYMBOL(ieee80211_cqm_beacon_loss_notify); |