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> |
d91f36db | 23 | #include <linux/crc32.h> |
5a0e3ad6 | 24 | #include <linux/slab.h> |
bc3b2d7f | 25 | #include <linux/export.h> |
f0706e82 | 26 | #include <net/mac80211.h> |
472dbc45 | 27 | #include <asm/unaligned.h> |
60f8b39c | 28 | |
f0706e82 | 29 | #include "ieee80211_i.h" |
24487981 | 30 | #include "driver-ops.h" |
2c8dccc7 JB |
31 | #include "rate.h" |
32 | #include "led.h" | |
f0706e82 | 33 | |
1672c0e3 | 34 | #define IEEE80211_AUTH_TIMEOUT (HZ / 5) |
cb236d2d | 35 | #define IEEE80211_AUTH_TIMEOUT_LONG (HZ / 2) |
1672c0e3 JB |
36 | #define IEEE80211_AUTH_TIMEOUT_SHORT (HZ / 10) |
37 | #define IEEE80211_AUTH_MAX_TRIES 3 | |
38 | #define IEEE80211_AUTH_WAIT_ASSOC (HZ * 5) | |
39 | #define IEEE80211_ASSOC_TIMEOUT (HZ / 5) | |
cb236d2d | 40 | #define IEEE80211_ASSOC_TIMEOUT_LONG (HZ / 2) |
1672c0e3 JB |
41 | #define IEEE80211_ASSOC_TIMEOUT_SHORT (HZ / 10) |
42 | #define IEEE80211_ASSOC_MAX_TRIES 3 | |
66e67e41 | 43 | |
180205bd BG |
44 | static int max_nullfunc_tries = 2; |
45 | module_param(max_nullfunc_tries, int, 0644); | |
46 | MODULE_PARM_DESC(max_nullfunc_tries, | |
47 | "Maximum nullfunc tx tries before disconnecting (reason 4)."); | |
48 | ||
49 | static int max_probe_tries = 5; | |
50 | module_param(max_probe_tries, int, 0644); | |
51 | MODULE_PARM_DESC(max_probe_tries, | |
52 | "Maximum probe tries before disconnecting (reason 4)."); | |
b291ba11 JB |
53 | |
54 | /* | |
7ccc8bd7 FF |
55 | * Beacon loss timeout is calculated as N frames times the |
56 | * advertised beacon interval. This may need to be somewhat | |
57 | * higher than what hardware might detect to account for | |
58 | * delays in the host processing frames. But since we also | |
59 | * probe on beacon miss before declaring the connection lost | |
60 | * default to what we want. | |
b291ba11 | 61 | */ |
59c1ec2b BG |
62 | static int beacon_loss_count = 7; |
63 | module_param(beacon_loss_count, int, 0644); | |
64 | MODULE_PARM_DESC(beacon_loss_count, | |
65 | "Number of beacon intervals before we decide beacon was lost."); | |
7ccc8bd7 | 66 | |
b291ba11 JB |
67 | /* |
68 | * Time the connection can be idle before we probe | |
69 | * it to see if we can still talk to the AP. | |
70 | */ | |
d1c5091f | 71 | #define IEEE80211_CONNECTION_IDLE_TIME (30 * HZ) |
b291ba11 JB |
72 | /* |
73 | * Time we wait for a probe response after sending | |
74 | * a probe request because of beacon loss or for | |
75 | * checking the connection still works. | |
76 | */ | |
180205bd BG |
77 | static int probe_wait_ms = 500; |
78 | module_param(probe_wait_ms, int, 0644); | |
79 | MODULE_PARM_DESC(probe_wait_ms, | |
80 | "Maximum time(ms) to wait for probe response" | |
81 | " before disconnecting (reason 4)."); | |
f0706e82 | 82 | |
391a200a JM |
83 | /* |
84 | * How many Beacon frames need to have been used in average signal strength | |
85 | * before starting to indicate signal change events. | |
86 | */ | |
87 | #define IEEE80211_SIGNAL_AVE_MIN_COUNT 4 | |
88 | ||
ca386f31 JB |
89 | /* |
90 | * We can have multiple work items (and connection probing) | |
91 | * scheduling this timer, but we need to take care to only | |
92 | * reschedule it when it should fire _earlier_ than it was | |
93 | * asked for before, or if it's not pending right now. This | |
94 | * function ensures that. Note that it then is required to | |
95 | * run this function for all timeouts after the first one | |
96 | * has happened -- the work that runs from this timer will | |
97 | * do that. | |
98 | */ | |
8d61ffa5 JB |
99 | static void run_again(struct ieee80211_sub_if_data *sdata, |
100 | unsigned long timeout) | |
ca386f31 | 101 | { |
8d61ffa5 | 102 | sdata_assert_lock(sdata); |
ca386f31 | 103 | |
8d61ffa5 JB |
104 | if (!timer_pending(&sdata->u.mgd.timer) || |
105 | time_before(timeout, sdata->u.mgd.timer.expires)) | |
106 | mod_timer(&sdata->u.mgd.timer, timeout); | |
ca386f31 JB |
107 | } |
108 | ||
d3a910a8 | 109 | void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata) |
b291ba11 | 110 | { |
c1288b12 | 111 | if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER) |
b291ba11 JB |
112 | return; |
113 | ||
30686bf7 | 114 | if (ieee80211_hw_check(&sdata->local->hw, CONNECTION_MONITOR)) |
7eeff74c JB |
115 | return; |
116 | ||
b291ba11 | 117 | mod_timer(&sdata->u.mgd.bcn_mon_timer, |
7ccc8bd7 | 118 | round_jiffies_up(jiffies + sdata->u.mgd.beacon_timeout)); |
b291ba11 JB |
119 | } |
120 | ||
be099e82 LR |
121 | void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata) |
122 | { | |
0c699c3a LR |
123 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
124 | ||
8628172f SG |
125 | if (unlikely(!sdata->u.mgd.associated)) |
126 | return; | |
127 | ||
448cd2e2 EP |
128 | ifmgd->probe_send_count = 0; |
129 | ||
30686bf7 | 130 | if (ieee80211_hw_check(&sdata->local->hw, CONNECTION_MONITOR)) |
be099e82 LR |
131 | return; |
132 | ||
133 | mod_timer(&sdata->u.mgd.conn_mon_timer, | |
134 | round_jiffies_up(jiffies + IEEE80211_CONNECTION_IDLE_TIME)); | |
135 | } | |
136 | ||
5484e237 | 137 | static int ecw2cw(int ecw) |
60f8b39c | 138 | { |
5484e237 | 139 | return (1 << ecw) - 1; |
60f8b39c JB |
140 | } |
141 | ||
6565ec9b JB |
142 | static u32 |
143 | ieee80211_determine_chantype(struct ieee80211_sub_if_data *sdata, | |
144 | struct ieee80211_supported_band *sband, | |
145 | struct ieee80211_channel *channel, | |
53b954ee | 146 | const struct ieee80211_ht_cap *ht_cap, |
6565ec9b JB |
147 | const struct ieee80211_ht_operation *ht_oper, |
148 | const struct ieee80211_vht_operation *vht_oper, | |
5cdaed1e | 149 | struct cfg80211_chan_def *chandef, bool tracking) |
6565ec9b | 150 | { |
5cdaed1e | 151 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
6565ec9b | 152 | struct cfg80211_chan_def vht_chandef; |
179b8fc7 | 153 | struct ieee80211_sta_ht_cap sta_ht_cap; |
6565ec9b JB |
154 | u32 ht_cfreq, ret; |
155 | ||
179b8fc7 CRI |
156 | memcpy(&sta_ht_cap, &sband->ht_cap, sizeof(sta_ht_cap)); |
157 | ieee80211_apply_htcap_overrides(sdata, &sta_ht_cap); | |
158 | ||
6565ec9b JB |
159 | chandef->chan = channel; |
160 | chandef->width = NL80211_CHAN_WIDTH_20_NOHT; | |
161 | chandef->center_freq1 = channel->center_freq; | |
162 | chandef->center_freq2 = 0; | |
163 | ||
179b8fc7 | 164 | if (!ht_cap || !ht_oper || !sta_ht_cap.ht_supported) { |
6565ec9b JB |
165 | ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT; |
166 | goto out; | |
167 | } | |
168 | ||
169 | chandef->width = NL80211_CHAN_WIDTH_20; | |
170 | ||
53b954ee EP |
171 | if (!(ht_cap->cap_info & |
172 | cpu_to_le16(IEEE80211_HT_CAP_SUP_WIDTH_20_40))) { | |
f3000e1b | 173 | ret = IEEE80211_STA_DISABLE_40MHZ; |
7e6225a1 | 174 | vht_chandef = *chandef; |
53b954ee EP |
175 | goto out; |
176 | } | |
177 | ||
6565ec9b JB |
178 | ht_cfreq = ieee80211_channel_to_frequency(ht_oper->primary_chan, |
179 | channel->band); | |
180 | /* check that channel matches the right operating channel */ | |
5cdaed1e | 181 | if (!tracking && channel->center_freq != ht_cfreq) { |
6565ec9b JB |
182 | /* |
183 | * It's possible that some APs are confused here; | |
184 | * Netgear WNDR3700 sometimes reports 4 higher than | |
185 | * the actual channel in association responses, but | |
186 | * since we look at probe response/beacon data here | |
187 | * it should be OK. | |
188 | */ | |
5cdaed1e JB |
189 | sdata_info(sdata, |
190 | "Wrong control channel: center-freq: %d ht-cfreq: %d ht->primary_chan: %d band: %d - Disabling HT\n", | |
191 | channel->center_freq, ht_cfreq, | |
192 | ht_oper->primary_chan, channel->band); | |
6565ec9b JB |
193 | ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT; |
194 | goto out; | |
195 | } | |
196 | ||
197 | /* check 40 MHz support, if we have it */ | |
179b8fc7 | 198 | if (sta_ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40) { |
8ac3c704 | 199 | ieee80211_chandef_ht_oper(ht_oper, chandef); |
6565ec9b JB |
200 | } else { |
201 | /* 40 MHz (and 80 MHz) must be supported for VHT */ | |
202 | ret = IEEE80211_STA_DISABLE_VHT; | |
85220d71 JB |
203 | /* also mark 40 MHz disabled */ |
204 | ret |= IEEE80211_STA_DISABLE_40MHZ; | |
6565ec9b JB |
205 | goto out; |
206 | } | |
207 | ||
208 | if (!vht_oper || !sband->vht_cap.vht_supported) { | |
209 | ret = IEEE80211_STA_DISABLE_VHT; | |
210 | goto out; | |
211 | } | |
212 | ||
8ac3c704 JB |
213 | vht_chandef = *chandef; |
214 | if (!ieee80211_chandef_vht_oper(vht_oper, &vht_chandef)) { | |
5cdaed1e | 215 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) |
30eb1dc2 | 216 | sdata_info(sdata, |
8ac3c704 | 217 | "AP VHT information is invalid, disable VHT\n"); |
6565ec9b JB |
218 | ret = IEEE80211_STA_DISABLE_VHT; |
219 | goto out; | |
220 | } | |
221 | ||
222 | if (!cfg80211_chandef_valid(&vht_chandef)) { | |
5cdaed1e | 223 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) |
30eb1dc2 JB |
224 | sdata_info(sdata, |
225 | "AP VHT information is invalid, disable VHT\n"); | |
6565ec9b JB |
226 | ret = IEEE80211_STA_DISABLE_VHT; |
227 | goto out; | |
228 | } | |
229 | ||
230 | if (cfg80211_chandef_identical(chandef, &vht_chandef)) { | |
231 | ret = 0; | |
232 | goto out; | |
233 | } | |
234 | ||
235 | if (!cfg80211_chandef_compatible(chandef, &vht_chandef)) { | |
5cdaed1e | 236 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) |
30eb1dc2 JB |
237 | sdata_info(sdata, |
238 | "AP VHT information doesn't match HT, disable VHT\n"); | |
6565ec9b JB |
239 | ret = IEEE80211_STA_DISABLE_VHT; |
240 | goto out; | |
241 | } | |
242 | ||
243 | *chandef = vht_chandef; | |
244 | ||
245 | ret = 0; | |
246 | ||
247 | out: | |
963a1852 JB |
248 | /* |
249 | * When tracking the current AP, don't do any further checks if the | |
250 | * new chandef is identical to the one we're currently using for the | |
251 | * connection. This keeps us from playing ping-pong with regulatory, | |
252 | * without it the following can happen (for example): | |
253 | * - connect to an AP with 80 MHz, world regdom allows 80 MHz | |
254 | * - AP advertises regdom US | |
255 | * - CRDA loads regdom US with 80 MHz prohibited (old database) | |
256 | * - the code below detects an unsupported channel, downgrades, and | |
257 | * we disconnect from the AP in the caller | |
258 | * - disconnect causes CRDA to reload world regdomain and the game | |
259 | * starts anew. | |
260 | * (see https://bugzilla.kernel.org/show_bug.cgi?id=70881) | |
261 | * | |
262 | * It seems possible that there are still scenarios with CSA or real | |
263 | * bandwidth changes where a this could happen, but those cases are | |
264 | * less common and wouldn't completely prevent using the AP. | |
265 | */ | |
266 | if (tracking && | |
267 | cfg80211_chandef_identical(chandef, &sdata->vif.bss_conf.chandef)) | |
268 | return ret; | |
269 | ||
586e01ed JB |
270 | /* don't print the message below for VHT mismatch if VHT is disabled */ |
271 | if (ret & IEEE80211_STA_DISABLE_VHT) | |
272 | vht_chandef = *chandef; | |
273 | ||
ddfe49b4 JB |
274 | /* |
275 | * Ignore the DISABLED flag when we're already connected and only | |
276 | * tracking the APs beacon for bandwidth changes - otherwise we | |
277 | * might get disconnected here if we connect to an AP, update our | |
278 | * regulatory information based on the AP's country IE and the | |
279 | * information we have is wrong/outdated and disables the channel | |
280 | * that we're actually using for the connection to the AP. | |
281 | */ | |
6565ec9b | 282 | while (!cfg80211_chandef_usable(sdata->local->hw.wiphy, chandef, |
ddfe49b4 JB |
283 | tracking ? 0 : |
284 | IEEE80211_CHAN_DISABLED)) { | |
6565ec9b JB |
285 | if (WARN_ON(chandef->width == NL80211_CHAN_WIDTH_20_NOHT)) { |
286 | ret = IEEE80211_STA_DISABLE_HT | | |
287 | IEEE80211_STA_DISABLE_VHT; | |
b56e4b85 | 288 | break; |
6565ec9b JB |
289 | } |
290 | ||
e6b7cde4 | 291 | ret |= ieee80211_chandef_downgrade(chandef); |
6565ec9b JB |
292 | } |
293 | ||
5cdaed1e | 294 | if (chandef->width != vht_chandef.width && !tracking) |
6565ec9b JB |
295 | sdata_info(sdata, |
296 | "capabilities/regulatory prevented using AP HT/VHT configuration, downgraded\n"); | |
297 | ||
298 | WARN_ON_ONCE(!cfg80211_chandef_valid(chandef)); | |
299 | return ret; | |
300 | } | |
301 | ||
30eb1dc2 JB |
302 | static int ieee80211_config_bw(struct ieee80211_sub_if_data *sdata, |
303 | struct sta_info *sta, | |
53b954ee | 304 | const struct ieee80211_ht_cap *ht_cap, |
30eb1dc2 JB |
305 | const struct ieee80211_ht_operation *ht_oper, |
306 | const struct ieee80211_vht_operation *vht_oper, | |
307 | const u8 *bssid, u32 *changed) | |
d5522e03 JB |
308 | { |
309 | struct ieee80211_local *local = sdata->local; | |
30eb1dc2 | 310 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
d5522e03 | 311 | struct ieee80211_supported_band *sband; |
55de908a | 312 | struct ieee80211_channel *chan; |
30eb1dc2 | 313 | struct cfg80211_chan_def chandef; |
9ed6bcce | 314 | u16 ht_opmode; |
30eb1dc2 JB |
315 | u32 flags; |
316 | enum ieee80211_sta_rx_bandwidth new_sta_bw; | |
317 | int ret; | |
d5522e03 | 318 | |
30eb1dc2 JB |
319 | /* if HT was/is disabled, don't track any bandwidth changes */ |
320 | if (ifmgd->flags & IEEE80211_STA_DISABLE_HT || !ht_oper) | |
1128958d JB |
321 | return 0; |
322 | ||
30eb1dc2 JB |
323 | /* don't check VHT if we associated as non-VHT station */ |
324 | if (ifmgd->flags & IEEE80211_STA_DISABLE_VHT) | |
325 | vht_oper = NULL; | |
326 | ||
327 | if (WARN_ON_ONCE(!sta)) | |
328 | return -EINVAL; | |
329 | ||
017b45bb AA |
330 | /* |
331 | * if bss configuration changed store the new one - | |
332 | * this may be applicable even if channel is identical | |
333 | */ | |
334 | ht_opmode = le16_to_cpu(ht_oper->operation_mode); | |
335 | if (sdata->vif.bss_conf.ht_operation_mode != ht_opmode) { | |
336 | *changed |= BSS_CHANGED_HT; | |
337 | sdata->vif.bss_conf.ht_operation_mode = ht_opmode; | |
338 | } | |
339 | ||
f2d9330e | 340 | chan = sdata->vif.bss_conf.chandef.chan; |
55de908a | 341 | sband = local->hw.wiphy->bands[chan->band]; |
d5522e03 | 342 | |
30eb1dc2 | 343 | /* calculate new channel (type) based on HT/VHT operation IEs */ |
53b954ee EP |
344 | flags = ieee80211_determine_chantype(sdata, sband, chan, |
345 | ht_cap, ht_oper, vht_oper, | |
346 | &chandef, true); | |
30eb1dc2 JB |
347 | |
348 | /* | |
349 | * Downgrade the new channel if we associated with restricted | |
350 | * capabilities. For example, if we associated as a 20 MHz STA | |
351 | * to a 40 MHz AP (due to regulatory, capabilities or config | |
352 | * reasons) then switching to a 40 MHz channel now won't do us | |
353 | * any good -- we couldn't use it with the AP. | |
354 | */ | |
355 | if (ifmgd->flags & IEEE80211_STA_DISABLE_80P80MHZ && | |
356 | chandef.width == NL80211_CHAN_WIDTH_80P80) | |
e6b7cde4 | 357 | flags |= ieee80211_chandef_downgrade(&chandef); |
30eb1dc2 JB |
358 | if (ifmgd->flags & IEEE80211_STA_DISABLE_160MHZ && |
359 | chandef.width == NL80211_CHAN_WIDTH_160) | |
e6b7cde4 | 360 | flags |= ieee80211_chandef_downgrade(&chandef); |
30eb1dc2 JB |
361 | if (ifmgd->flags & IEEE80211_STA_DISABLE_40MHZ && |
362 | chandef.width > NL80211_CHAN_WIDTH_20) | |
e6b7cde4 | 363 | flags |= ieee80211_chandef_downgrade(&chandef); |
30eb1dc2 JB |
364 | |
365 | if (cfg80211_chandef_identical(&chandef, &sdata->vif.bss_conf.chandef)) | |
366 | return 0; | |
367 | ||
368 | sdata_info(sdata, | |
369 | "AP %pM changed bandwidth, new config is %d MHz, width %d (%d/%d MHz)\n", | |
370 | ifmgd->bssid, chandef.chan->center_freq, chandef.width, | |
371 | chandef.center_freq1, chandef.center_freq2); | |
372 | ||
373 | if (flags != (ifmgd->flags & (IEEE80211_STA_DISABLE_HT | | |
374 | IEEE80211_STA_DISABLE_VHT | | |
375 | IEEE80211_STA_DISABLE_40MHZ | | |
376 | IEEE80211_STA_DISABLE_80P80MHZ | | |
377 | IEEE80211_STA_DISABLE_160MHZ)) || | |
378 | !cfg80211_chandef_valid(&chandef)) { | |
379 | sdata_info(sdata, | |
380 | "AP %pM changed bandwidth in a way we can't support - disconnect\n", | |
381 | ifmgd->bssid); | |
382 | return -EINVAL; | |
383 | } | |
384 | ||
385 | switch (chandef.width) { | |
386 | case NL80211_CHAN_WIDTH_20_NOHT: | |
387 | case NL80211_CHAN_WIDTH_20: | |
388 | new_sta_bw = IEEE80211_STA_RX_BW_20; | |
389 | break; | |
4bf88530 | 390 | case NL80211_CHAN_WIDTH_40: |
30eb1dc2 | 391 | new_sta_bw = IEEE80211_STA_RX_BW_40; |
64f68e5d | 392 | break; |
30eb1dc2 JB |
393 | case NL80211_CHAN_WIDTH_80: |
394 | new_sta_bw = IEEE80211_STA_RX_BW_80; | |
395 | break; | |
396 | case NL80211_CHAN_WIDTH_80P80: | |
397 | case NL80211_CHAN_WIDTH_160: | |
398 | new_sta_bw = IEEE80211_STA_RX_BW_160; | |
64f68e5d | 399 | break; |
30eb1dc2 JB |
400 | default: |
401 | return -EINVAL; | |
64f68e5d | 402 | } |
d5522e03 | 403 | |
30eb1dc2 JB |
404 | if (new_sta_bw > sta->cur_max_bandwidth) |
405 | new_sta_bw = sta->cur_max_bandwidth; | |
64f68e5d | 406 | |
30eb1dc2 JB |
407 | if (new_sta_bw < sta->sta.bandwidth) { |
408 | sta->sta.bandwidth = new_sta_bw; | |
409 | rate_control_rate_update(local, sband, sta, | |
410 | IEEE80211_RC_BW_CHANGED); | |
411 | } | |
64f68e5d | 412 | |
30eb1dc2 JB |
413 | ret = ieee80211_vif_change_bandwidth(sdata, &chandef, changed); |
414 | if (ret) { | |
415 | sdata_info(sdata, | |
416 | "AP %pM changed bandwidth to incompatible one - disconnect\n", | |
417 | ifmgd->bssid); | |
418 | return ret; | |
419 | } | |
7cc44ed4 | 420 | |
30eb1dc2 JB |
421 | if (new_sta_bw > sta->sta.bandwidth) { |
422 | sta->sta.bandwidth = new_sta_bw; | |
423 | rate_control_rate_update(local, sband, sta, | |
424 | IEEE80211_RC_BW_CHANGED); | |
0aaffa9b | 425 | } |
d5522e03 | 426 | |
30eb1dc2 | 427 | return 0; |
d5522e03 JB |
428 | } |
429 | ||
9c6bd790 JB |
430 | /* frame sending functions */ |
431 | ||
66e67e41 | 432 | static void ieee80211_add_ht_ie(struct ieee80211_sub_if_data *sdata, |
9dde6423 | 433 | struct sk_buff *skb, u8 ap_ht_param, |
66e67e41 JB |
434 | struct ieee80211_supported_band *sband, |
435 | struct ieee80211_channel *channel, | |
436 | enum ieee80211_smps_mode smps) | |
437 | { | |
66e67e41 JB |
438 | u8 *pos; |
439 | u32 flags = channel->flags; | |
440 | u16 cap; | |
441 | struct ieee80211_sta_ht_cap ht_cap; | |
442 | ||
443 | BUILD_BUG_ON(sizeof(ht_cap) != sizeof(sband->ht_cap)); | |
444 | ||
66e67e41 JB |
445 | memcpy(&ht_cap, &sband->ht_cap, sizeof(ht_cap)); |
446 | ieee80211_apply_htcap_overrides(sdata, &ht_cap); | |
447 | ||
66e67e41 JB |
448 | /* determine capability flags */ |
449 | cap = ht_cap.cap; | |
450 | ||
9dde6423 | 451 | switch (ap_ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) { |
66e67e41 JB |
452 | case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: |
453 | if (flags & IEEE80211_CHAN_NO_HT40PLUS) { | |
454 | cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; | |
455 | cap &= ~IEEE80211_HT_CAP_SGI_40; | |
456 | } | |
457 | break; | |
458 | case IEEE80211_HT_PARAM_CHA_SEC_BELOW: | |
459 | if (flags & IEEE80211_CHAN_NO_HT40MINUS) { | |
460 | cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; | |
461 | cap &= ~IEEE80211_HT_CAP_SGI_40; | |
462 | } | |
463 | break; | |
464 | } | |
465 | ||
24398e39 JB |
466 | /* |
467 | * If 40 MHz was disabled associate as though we weren't | |
468 | * capable of 40 MHz -- some broken APs will never fall | |
469 | * back to trying to transmit in 20 MHz. | |
470 | */ | |
471 | if (sdata->u.mgd.flags & IEEE80211_STA_DISABLE_40MHZ) { | |
472 | cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; | |
473 | cap &= ~IEEE80211_HT_CAP_SGI_40; | |
474 | } | |
475 | ||
66e67e41 JB |
476 | /* set SM PS mode properly */ |
477 | cap &= ~IEEE80211_HT_CAP_SM_PS; | |
478 | switch (smps) { | |
479 | case IEEE80211_SMPS_AUTOMATIC: | |
480 | case IEEE80211_SMPS_NUM_MODES: | |
481 | WARN_ON(1); | |
482 | case IEEE80211_SMPS_OFF: | |
483 | cap |= WLAN_HT_CAP_SM_PS_DISABLED << | |
484 | IEEE80211_HT_CAP_SM_PS_SHIFT; | |
485 | break; | |
486 | case IEEE80211_SMPS_STATIC: | |
487 | cap |= WLAN_HT_CAP_SM_PS_STATIC << | |
488 | IEEE80211_HT_CAP_SM_PS_SHIFT; | |
489 | break; | |
490 | case IEEE80211_SMPS_DYNAMIC: | |
491 | cap |= WLAN_HT_CAP_SM_PS_DYNAMIC << | |
492 | IEEE80211_HT_CAP_SM_PS_SHIFT; | |
493 | break; | |
494 | } | |
495 | ||
496 | /* reserve and fill IE */ | |
497 | pos = skb_put(skb, sizeof(struct ieee80211_ht_cap) + 2); | |
498 | ieee80211_ie_build_ht_cap(pos, &ht_cap, cap); | |
499 | } | |
500 | ||
322cd406 SS |
501 | /* This function determines vht capability flags for the association |
502 | * and builds the IE. | |
503 | * Note - the function may set the owner of the MU-MIMO capability | |
504 | */ | |
d545daba MP |
505 | static void ieee80211_add_vht_ie(struct ieee80211_sub_if_data *sdata, |
506 | struct sk_buff *skb, | |
b08fbbd8 JB |
507 | struct ieee80211_supported_band *sband, |
508 | struct ieee80211_vht_cap *ap_vht_cap) | |
d545daba | 509 | { |
322cd406 | 510 | struct ieee80211_local *local = sdata->local; |
d545daba MP |
511 | u8 *pos; |
512 | u32 cap; | |
513 | struct ieee80211_sta_vht_cap vht_cap; | |
c1cf6d4e | 514 | u32 mask, ap_bf_sts, our_bf_sts; |
d545daba MP |
515 | |
516 | BUILD_BUG_ON(sizeof(vht_cap) != sizeof(sband->vht_cap)); | |
517 | ||
518 | memcpy(&vht_cap, &sband->vht_cap, sizeof(vht_cap)); | |
dd5ecfea | 519 | ieee80211_apply_vhtcap_overrides(sdata, &vht_cap); |
d545daba MP |
520 | |
521 | /* determine capability flags */ | |
522 | cap = vht_cap.cap; | |
523 | ||
f2d9d270 | 524 | if (sdata->u.mgd.flags & IEEE80211_STA_DISABLE_80P80MHZ) { |
575f0530 JB |
525 | u32 bw = cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK; |
526 | ||
527 | cap &= ~IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK; | |
528 | if (bw == IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ || | |
529 | bw == IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ) | |
530 | cap |= IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ; | |
f2d9d270 JB |
531 | } |
532 | ||
533 | if (sdata->u.mgd.flags & IEEE80211_STA_DISABLE_160MHZ) { | |
534 | cap &= ~IEEE80211_VHT_CAP_SHORT_GI_160; | |
575f0530 | 535 | cap &= ~IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK; |
f2d9d270 JB |
536 | } |
537 | ||
b08fbbd8 JB |
538 | /* |
539 | * Some APs apparently get confused if our capabilities are better | |
540 | * than theirs, so restrict what we advertise in the assoc request. | |
541 | */ | |
542 | if (!(ap_vht_cap->vht_cap_info & | |
543 | cpu_to_le32(IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE))) | |
322cd406 SS |
544 | cap &= ~(IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE | |
545 | IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE); | |
546 | else if (!(ap_vht_cap->vht_cap_info & | |
547 | cpu_to_le32(IEEE80211_VHT_CAP_MU_BEAMFORMER_CAPABLE))) | |
548 | cap &= ~IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE; | |
549 | ||
550 | /* | |
551 | * If some other vif is using the MU-MIMO capablity we cannot associate | |
552 | * using MU-MIMO - this will lead to contradictions in the group-id | |
553 | * mechanism. | |
554 | * Ownership is defined since association request, in order to avoid | |
555 | * simultaneous associations with MU-MIMO. | |
556 | */ | |
557 | if (cap & IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE) { | |
558 | bool disable_mu_mimo = false; | |
559 | struct ieee80211_sub_if_data *other; | |
560 | ||
561 | list_for_each_entry_rcu(other, &local->interfaces, list) { | |
562 | if (other->flags & IEEE80211_SDATA_MU_MIMO_OWNER) { | |
563 | disable_mu_mimo = true; | |
564 | break; | |
565 | } | |
566 | } | |
567 | if (disable_mu_mimo) | |
568 | cap &= ~IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE; | |
569 | else | |
570 | sdata->flags |= IEEE80211_SDATA_MU_MIMO_OWNER; | |
571 | } | |
b08fbbd8 | 572 | |
c1cf6d4e ES |
573 | mask = IEEE80211_VHT_CAP_BEAMFORMEE_STS_MASK; |
574 | ||
575 | ap_bf_sts = le32_to_cpu(ap_vht_cap->vht_cap_info) & mask; | |
576 | our_bf_sts = cap & mask; | |
577 | ||
578 | if (ap_bf_sts < our_bf_sts) { | |
579 | cap &= ~mask; | |
580 | cap |= ap_bf_sts; | |
581 | } | |
582 | ||
d545daba | 583 | /* reserve and fill IE */ |
d4950281 | 584 | pos = skb_put(skb, sizeof(struct ieee80211_vht_cap) + 2); |
d545daba MP |
585 | ieee80211_ie_build_vht_cap(pos, &vht_cap, cap); |
586 | } | |
587 | ||
66e67e41 JB |
588 | static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata) |
589 | { | |
590 | struct ieee80211_local *local = sdata->local; | |
591 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
592 | struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data; | |
593 | struct sk_buff *skb; | |
594 | struct ieee80211_mgmt *mgmt; | |
595 | u8 *pos, qos_info; | |
596 | size_t offset = 0, noffset; | |
2103dec1 | 597 | int i, count, rates_len, supp_rates_len, shift; |
66e67e41 JB |
598 | u16 capab; |
599 | struct ieee80211_supported_band *sband; | |
55de908a JB |
600 | struct ieee80211_chanctx_conf *chanctx_conf; |
601 | struct ieee80211_channel *chan; | |
2103dec1 | 602 | u32 rate_flags, rates = 0; |
66e67e41 | 603 | |
8d61ffa5 | 604 | sdata_assert_lock(sdata); |
66e67e41 | 605 | |
55de908a JB |
606 | rcu_read_lock(); |
607 | chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); | |
608 | if (WARN_ON(!chanctx_conf)) { | |
609 | rcu_read_unlock(); | |
610 | return; | |
611 | } | |
4bf88530 | 612 | chan = chanctx_conf->def.chan; |
2103dec1 | 613 | rate_flags = ieee80211_chandef_rate_flags(&chanctx_conf->def); |
55de908a JB |
614 | rcu_read_unlock(); |
615 | sband = local->hw.wiphy->bands[chan->band]; | |
2103dec1 | 616 | shift = ieee80211_vif_get_shift(&sdata->vif); |
66e67e41 JB |
617 | |
618 | if (assoc_data->supp_rates_len) { | |
619 | /* | |
620 | * Get all rates supported by the device and the AP as | |
621 | * some APs don't like getting a superset of their rates | |
622 | * in the association request (e.g. D-Link DAP 1353 in | |
623 | * b-only mode)... | |
624 | */ | |
2103dec1 SW |
625 | rates_len = ieee80211_parse_bitrates(&chanctx_conf->def, sband, |
626 | assoc_data->supp_rates, | |
627 | assoc_data->supp_rates_len, | |
628 | &rates); | |
66e67e41 JB |
629 | } else { |
630 | /* | |
631 | * In case AP not provide any supported rates information | |
632 | * before association, we send information element(s) with | |
633 | * all rates that we support. | |
634 | */ | |
2103dec1 SW |
635 | rates_len = 0; |
636 | for (i = 0; i < sband->n_bitrates; i++) { | |
637 | if ((rate_flags & sband->bitrates[i].flags) | |
638 | != rate_flags) | |
639 | continue; | |
640 | rates |= BIT(i); | |
641 | rates_len++; | |
642 | } | |
66e67e41 JB |
643 | } |
644 | ||
645 | skb = alloc_skb(local->hw.extra_tx_headroom + | |
646 | sizeof(*mgmt) + /* bit too much but doesn't matter */ | |
647 | 2 + assoc_data->ssid_len + /* SSID */ | |
648 | 4 + rates_len + /* (extended) rates */ | |
649 | 4 + /* power capability */ | |
650 | 2 + 2 * sband->n_channels + /* supported channels */ | |
651 | 2 + sizeof(struct ieee80211_ht_cap) + /* HT */ | |
d4950281 | 652 | 2 + sizeof(struct ieee80211_vht_cap) + /* VHT */ |
66e67e41 JB |
653 | assoc_data->ie_len + /* extra IEs */ |
654 | 9, /* WMM */ | |
655 | GFP_KERNEL); | |
656 | if (!skb) | |
657 | return; | |
658 | ||
659 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
660 | ||
661 | capab = WLAN_CAPABILITY_ESS; | |
662 | ||
663 | if (sband->band == IEEE80211_BAND_2GHZ) { | |
ea1b2b45 JB |
664 | capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME; |
665 | capab |= WLAN_CAPABILITY_SHORT_PREAMBLE; | |
66e67e41 JB |
666 | } |
667 | ||
668 | if (assoc_data->capability & WLAN_CAPABILITY_PRIVACY) | |
669 | capab |= WLAN_CAPABILITY_PRIVACY; | |
670 | ||
671 | if ((assoc_data->capability & WLAN_CAPABILITY_SPECTRUM_MGMT) && | |
30686bf7 | 672 | ieee80211_hw_check(&local->hw, SPECTRUM_MGMT)) |
66e67e41 JB |
673 | capab |= WLAN_CAPABILITY_SPECTRUM_MGMT; |
674 | ||
cd2f5dd7 AK |
675 | if (ifmgd->flags & IEEE80211_STA_ENABLE_RRM) |
676 | capab |= WLAN_CAPABILITY_RADIO_MEASURE; | |
677 | ||
66e67e41 JB |
678 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); |
679 | memset(mgmt, 0, 24); | |
680 | memcpy(mgmt->da, assoc_data->bss->bssid, ETH_ALEN); | |
681 | memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); | |
682 | memcpy(mgmt->bssid, assoc_data->bss->bssid, ETH_ALEN); | |
683 | ||
684 | if (!is_zero_ether_addr(assoc_data->prev_bssid)) { | |
685 | skb_put(skb, 10); | |
686 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | | |
687 | IEEE80211_STYPE_REASSOC_REQ); | |
688 | mgmt->u.reassoc_req.capab_info = cpu_to_le16(capab); | |
689 | mgmt->u.reassoc_req.listen_interval = | |
690 | cpu_to_le16(local->hw.conf.listen_interval); | |
691 | memcpy(mgmt->u.reassoc_req.current_ap, assoc_data->prev_bssid, | |
692 | ETH_ALEN); | |
693 | } else { | |
694 | skb_put(skb, 4); | |
695 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | | |
696 | IEEE80211_STYPE_ASSOC_REQ); | |
697 | mgmt->u.assoc_req.capab_info = cpu_to_le16(capab); | |
698 | mgmt->u.assoc_req.listen_interval = | |
699 | cpu_to_le16(local->hw.conf.listen_interval); | |
700 | } | |
701 | ||
702 | /* SSID */ | |
703 | pos = skb_put(skb, 2 + assoc_data->ssid_len); | |
704 | *pos++ = WLAN_EID_SSID; | |
705 | *pos++ = assoc_data->ssid_len; | |
706 | memcpy(pos, assoc_data->ssid, assoc_data->ssid_len); | |
707 | ||
708 | /* add all rates which were marked to be used above */ | |
709 | supp_rates_len = rates_len; | |
710 | if (supp_rates_len > 8) | |
711 | supp_rates_len = 8; | |
712 | ||
713 | pos = skb_put(skb, supp_rates_len + 2); | |
714 | *pos++ = WLAN_EID_SUPP_RATES; | |
715 | *pos++ = supp_rates_len; | |
716 | ||
717 | count = 0; | |
718 | for (i = 0; i < sband->n_bitrates; i++) { | |
719 | if (BIT(i) & rates) { | |
2103dec1 SW |
720 | int rate = DIV_ROUND_UP(sband->bitrates[i].bitrate, |
721 | 5 * (1 << shift)); | |
722 | *pos++ = (u8) rate; | |
66e67e41 JB |
723 | if (++count == 8) |
724 | break; | |
725 | } | |
726 | } | |
727 | ||
728 | if (rates_len > count) { | |
729 | pos = skb_put(skb, rates_len - count + 2); | |
730 | *pos++ = WLAN_EID_EXT_SUPP_RATES; | |
731 | *pos++ = rates_len - count; | |
732 | ||
733 | for (i++; i < sband->n_bitrates; i++) { | |
734 | if (BIT(i) & rates) { | |
2103dec1 SW |
735 | int rate; |
736 | rate = DIV_ROUND_UP(sband->bitrates[i].bitrate, | |
737 | 5 * (1 << shift)); | |
738 | *pos++ = (u8) rate; | |
66e67e41 JB |
739 | } |
740 | } | |
741 | } | |
742 | ||
cd2f5dd7 AK |
743 | if (capab & WLAN_CAPABILITY_SPECTRUM_MGMT || |
744 | capab & WLAN_CAPABILITY_RADIO_MEASURE) { | |
66e67e41 JB |
745 | pos = skb_put(skb, 4); |
746 | *pos++ = WLAN_EID_PWR_CAPABILITY; | |
747 | *pos++ = 2; | |
748 | *pos++ = 0; /* min tx power */ | |
0430c883 SW |
749 | /* max tx power */ |
750 | *pos++ = ieee80211_chandef_max_power(&chanctx_conf->def); | |
cd2f5dd7 | 751 | } |
66e67e41 | 752 | |
cd2f5dd7 | 753 | if (capab & WLAN_CAPABILITY_SPECTRUM_MGMT) { |
66e67e41 JB |
754 | /* TODO: get this in reg domain format */ |
755 | pos = skb_put(skb, 2 * sband->n_channels + 2); | |
756 | *pos++ = WLAN_EID_SUPPORTED_CHANNELS; | |
757 | *pos++ = 2 * sband->n_channels; | |
758 | for (i = 0; i < sband->n_channels; i++) { | |
759 | *pos++ = ieee80211_frequency_to_channel( | |
760 | sband->channels[i].center_freq); | |
761 | *pos++ = 1; /* one channel in the subband*/ | |
762 | } | |
763 | } | |
764 | ||
765 | /* if present, add any custom IEs that go before HT */ | |
b3f51e94 | 766 | if (assoc_data->ie_len) { |
66e67e41 JB |
767 | static const u8 before_ht[] = { |
768 | WLAN_EID_SSID, | |
769 | WLAN_EID_SUPP_RATES, | |
770 | WLAN_EID_EXT_SUPP_RATES, | |
771 | WLAN_EID_PWR_CAPABILITY, | |
772 | WLAN_EID_SUPPORTED_CHANNELS, | |
773 | WLAN_EID_RSN, | |
774 | WLAN_EID_QOS_CAPA, | |
775 | WLAN_EID_RRM_ENABLED_CAPABILITIES, | |
776 | WLAN_EID_MOBILITY_DOMAIN, | |
8ed28747 JB |
777 | WLAN_EID_FAST_BSS_TRANSITION, /* reassoc only */ |
778 | WLAN_EID_RIC_DATA, /* reassoc only */ | |
66e67e41 JB |
779 | WLAN_EID_SUPPORTED_REGULATORY_CLASSES, |
780 | }; | |
8ed28747 JB |
781 | static const u8 after_ric[] = { |
782 | WLAN_EID_SUPPORTED_REGULATORY_CLASSES, | |
783 | WLAN_EID_HT_CAPABILITY, | |
784 | WLAN_EID_BSS_COEX_2040, | |
785 | WLAN_EID_EXT_CAPABILITY, | |
786 | WLAN_EID_QOS_TRAFFIC_CAPA, | |
787 | WLAN_EID_TIM_BCAST_REQ, | |
788 | WLAN_EID_INTERWORKING, | |
789 | /* 60GHz doesn't happen right now */ | |
790 | WLAN_EID_VHT_CAPABILITY, | |
791 | WLAN_EID_OPMODE_NOTIF, | |
792 | }; | |
793 | ||
794 | noffset = ieee80211_ie_split_ric(assoc_data->ie, | |
795 | assoc_data->ie_len, | |
796 | before_ht, | |
797 | ARRAY_SIZE(before_ht), | |
798 | after_ric, | |
799 | ARRAY_SIZE(after_ric), | |
800 | offset); | |
66e67e41 JB |
801 | pos = skb_put(skb, noffset - offset); |
802 | memcpy(pos, assoc_data->ie + offset, noffset - offset); | |
803 | offset = noffset; | |
804 | } | |
805 | ||
f2d9d270 JB |
806 | if (WARN_ON_ONCE((ifmgd->flags & IEEE80211_STA_DISABLE_HT) && |
807 | !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))) | |
808 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; | |
809 | ||
a8243b72 | 810 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) |
9dde6423 | 811 | ieee80211_add_ht_ie(sdata, skb, assoc_data->ap_ht_param, |
04ecd257 | 812 | sband, chan, sdata->smps_mode); |
66e67e41 | 813 | |
3de3802c JB |
814 | /* if present, add any custom IEs that go before VHT */ |
815 | if (assoc_data->ie_len) { | |
816 | static const u8 before_vht[] = { | |
817 | WLAN_EID_SSID, | |
818 | WLAN_EID_SUPP_RATES, | |
819 | WLAN_EID_EXT_SUPP_RATES, | |
820 | WLAN_EID_PWR_CAPABILITY, | |
821 | WLAN_EID_SUPPORTED_CHANNELS, | |
822 | WLAN_EID_RSN, | |
823 | WLAN_EID_QOS_CAPA, | |
824 | WLAN_EID_RRM_ENABLED_CAPABILITIES, | |
825 | WLAN_EID_MOBILITY_DOMAIN, | |
826 | WLAN_EID_SUPPORTED_REGULATORY_CLASSES, | |
827 | WLAN_EID_HT_CAPABILITY, | |
828 | WLAN_EID_BSS_COEX_2040, | |
829 | WLAN_EID_EXT_CAPABILITY, | |
830 | WLAN_EID_QOS_TRAFFIC_CAPA, | |
831 | WLAN_EID_TIM_BCAST_REQ, | |
832 | WLAN_EID_INTERWORKING, | |
833 | }; | |
8ed28747 JB |
834 | |
835 | /* RIC already taken above, so no need to handle here anymore */ | |
3de3802c JB |
836 | noffset = ieee80211_ie_split(assoc_data->ie, assoc_data->ie_len, |
837 | before_vht, ARRAY_SIZE(before_vht), | |
838 | offset); | |
839 | pos = skb_put(skb, noffset - offset); | |
840 | memcpy(pos, assoc_data->ie + offset, noffset - offset); | |
841 | offset = noffset; | |
842 | } | |
843 | ||
d545daba | 844 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) |
b08fbbd8 JB |
845 | ieee80211_add_vht_ie(sdata, skb, sband, |
846 | &assoc_data->ap_vht_cap); | |
d545daba | 847 | |
66e67e41 | 848 | /* if present, add any custom non-vendor IEs that go after HT */ |
b3f51e94 | 849 | if (assoc_data->ie_len) { |
66e67e41 JB |
850 | noffset = ieee80211_ie_split_vendor(assoc_data->ie, |
851 | assoc_data->ie_len, | |
852 | offset); | |
853 | pos = skb_put(skb, noffset - offset); | |
854 | memcpy(pos, assoc_data->ie + offset, noffset - offset); | |
855 | offset = noffset; | |
856 | } | |
857 | ||
76f0303d JB |
858 | if (assoc_data->wmm) { |
859 | if (assoc_data->uapsd) { | |
dc41e4d4 EP |
860 | qos_info = ifmgd->uapsd_queues; |
861 | qos_info |= (ifmgd->uapsd_max_sp_len << | |
66e67e41 JB |
862 | IEEE80211_WMM_IE_STA_QOSINFO_SP_SHIFT); |
863 | } else { | |
864 | qos_info = 0; | |
865 | } | |
866 | ||
40b861a0 | 867 | pos = ieee80211_add_wmm_info_ie(skb_put(skb, 9), qos_info); |
66e67e41 JB |
868 | } |
869 | ||
870 | /* add any remaining custom (i.e. vendor specific here) IEs */ | |
b3f51e94 | 871 | if (assoc_data->ie_len) { |
66e67e41 JB |
872 | noffset = assoc_data->ie_len; |
873 | pos = skb_put(skb, noffset - offset); | |
874 | memcpy(pos, assoc_data->ie + offset, noffset - offset); | |
875 | } | |
876 | ||
a1845fc7 JB |
877 | drv_mgd_prepare_tx(local, sdata); |
878 | ||
66e67e41 | 879 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; |
30686bf7 | 880 | if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) |
1672c0e3 JB |
881 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS | |
882 | IEEE80211_TX_INTFL_MLME_CONN_TX; | |
66e67e41 JB |
883 | ieee80211_tx_skb(sdata, skb); |
884 | } | |
885 | ||
572e0012 KV |
886 | void ieee80211_send_pspoll(struct ieee80211_local *local, |
887 | struct ieee80211_sub_if_data *sdata) | |
888 | { | |
572e0012 KV |
889 | struct ieee80211_pspoll *pspoll; |
890 | struct sk_buff *skb; | |
572e0012 | 891 | |
d8cd189e KV |
892 | skb = ieee80211_pspoll_get(&local->hw, &sdata->vif); |
893 | if (!skb) | |
572e0012 | 894 | return; |
572e0012 | 895 | |
d8cd189e KV |
896 | pspoll = (struct ieee80211_pspoll *) skb->data; |
897 | pspoll->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM); | |
572e0012 | 898 | |
62ae67be JB |
899 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; |
900 | ieee80211_tx_skb(sdata, skb); | |
572e0012 KV |
901 | } |
902 | ||
965bedad JB |
903 | void ieee80211_send_nullfunc(struct ieee80211_local *local, |
904 | struct ieee80211_sub_if_data *sdata, | |
076cdcb1 | 905 | bool powersave) |
965bedad JB |
906 | { |
907 | struct sk_buff *skb; | |
d8cd189e | 908 | struct ieee80211_hdr_3addr *nullfunc; |
b6f35301 | 909 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
965bedad | 910 | |
d8cd189e KV |
911 | skb = ieee80211_nullfunc_get(&local->hw, &sdata->vif); |
912 | if (!skb) | |
965bedad | 913 | return; |
965bedad | 914 | |
d8cd189e | 915 | nullfunc = (struct ieee80211_hdr_3addr *) skb->data; |
965bedad | 916 | if (powersave) |
d8cd189e | 917 | nullfunc->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM); |
965bedad | 918 | |
6c17b77b SF |
919 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT | |
920 | IEEE80211_TX_INTFL_OFFCHAN_TX_OK; | |
ff40b425 | 921 | |
30686bf7 | 922 | if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) |
ff40b425 PF |
923 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS; |
924 | ||
392b9ffb | 925 | if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL) |
b6f35301 RM |
926 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_USE_MINRATE; |
927 | ||
62ae67be | 928 | ieee80211_tx_skb(sdata, skb); |
965bedad JB |
929 | } |
930 | ||
d524215f FF |
931 | static void ieee80211_send_4addr_nullfunc(struct ieee80211_local *local, |
932 | struct ieee80211_sub_if_data *sdata) | |
933 | { | |
934 | struct sk_buff *skb; | |
935 | struct ieee80211_hdr *nullfunc; | |
936 | __le16 fc; | |
937 | ||
938 | if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION)) | |
939 | return; | |
940 | ||
941 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + 30); | |
d15b8459 | 942 | if (!skb) |
d524215f | 943 | return; |
d15b8459 | 944 | |
d524215f FF |
945 | skb_reserve(skb, local->hw.extra_tx_headroom); |
946 | ||
947 | nullfunc = (struct ieee80211_hdr *) skb_put(skb, 30); | |
948 | memset(nullfunc, 0, 30); | |
949 | fc = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC | | |
950 | IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS); | |
951 | nullfunc->frame_control = fc; | |
952 | memcpy(nullfunc->addr1, sdata->u.mgd.bssid, ETH_ALEN); | |
953 | memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN); | |
954 | memcpy(nullfunc->addr3, sdata->u.mgd.bssid, ETH_ALEN); | |
955 | memcpy(nullfunc->addr4, sdata->vif.addr, ETH_ALEN); | |
956 | ||
957 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; | |
958 | ieee80211_tx_skb(sdata, skb); | |
959 | } | |
960 | ||
cc32abd4 JB |
961 | /* spectrum management related things */ |
962 | static void ieee80211_chswitch_work(struct work_struct *work) | |
963 | { | |
964 | struct ieee80211_sub_if_data *sdata = | |
965 | container_of(work, struct ieee80211_sub_if_data, u.mgd.chswitch_work); | |
675a0b04 | 966 | struct ieee80211_local *local = sdata->local; |
cc32abd4 | 967 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
7578d575 | 968 | int ret; |
cc32abd4 | 969 | |
9607e6b6 | 970 | if (!ieee80211_sdata_running(sdata)) |
cc32abd4 JB |
971 | return; |
972 | ||
8d61ffa5 | 973 | sdata_lock(sdata); |
4c3ebc56 MK |
974 | mutex_lock(&local->mtx); |
975 | mutex_lock(&local->chanctx_mtx); | |
976 | ||
77fdaa12 JB |
977 | if (!ifmgd->associated) |
978 | goto out; | |
cc32abd4 | 979 | |
4c3ebc56 MK |
980 | if (!sdata->vif.csa_active) |
981 | goto out; | |
982 | ||
983 | /* | |
984 | * using reservation isn't immediate as it may be deferred until later | |
985 | * with multi-vif. once reservation is complete it will re-schedule the | |
986 | * work with no reserved_chanctx so verify chandef to check if it | |
987 | * completed successfully | |
988 | */ | |
989 | ||
990 | if (sdata->reserved_chanctx) { | |
991 | /* | |
992 | * with multi-vif csa driver may call ieee80211_csa_finish() | |
993 | * many times while waiting for other interfaces to use their | |
994 | * reservations | |
995 | */ | |
996 | if (sdata->reserved_ready) | |
997 | goto out; | |
998 | ||
999 | ret = ieee80211_vif_use_reserved_context(sdata); | |
1000 | if (ret) { | |
1001 | sdata_info(sdata, | |
1002 | "failed to use reserved channel context, disconnecting (err=%d)\n", | |
1003 | ret); | |
1004 | ieee80211_queue_work(&sdata->local->hw, | |
1005 | &ifmgd->csa_connection_drop_work); | |
1006 | goto out; | |
1007 | } | |
1008 | ||
1009 | goto out; | |
1010 | } | |
1011 | ||
1012 | if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef, | |
1013 | &sdata->csa_chandef)) { | |
7578d575 | 1014 | sdata_info(sdata, |
4c3ebc56 | 1015 | "failed to finalize channel switch, disconnecting\n"); |
7578d575 AN |
1016 | ieee80211_queue_work(&sdata->local->hw, |
1017 | &ifmgd->csa_connection_drop_work); | |
1018 | goto out; | |
1019 | } | |
675a0b04 | 1020 | |
cc32abd4 | 1021 | /* XXX: shouldn't really modify cfg80211-owned data! */ |
33787fc4 | 1022 | ifmgd->associated->channel = sdata->csa_chandef.chan; |
cc32abd4 | 1023 | |
0c21e632 LC |
1024 | ifmgd->csa_waiting_bcn = true; |
1025 | ||
1026 | ieee80211_sta_reset_beacon_monitor(sdata); | |
1027 | ieee80211_sta_reset_conn_monitor(sdata); | |
1028 | ||
1029 | out: | |
1030 | mutex_unlock(&local->chanctx_mtx); | |
1031 | mutex_unlock(&local->mtx); | |
1032 | sdata_unlock(sdata); | |
1033 | } | |
1034 | ||
1035 | static void ieee80211_chswitch_post_beacon(struct ieee80211_sub_if_data *sdata) | |
1036 | { | |
1037 | struct ieee80211_local *local = sdata->local; | |
1038 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
1039 | int ret; | |
1040 | ||
1041 | sdata_assert_lock(sdata); | |
1042 | ||
1043 | WARN_ON(!sdata->vif.csa_active); | |
4c3ebc56 | 1044 | |
a46992b4 LC |
1045 | if (sdata->csa_block_tx) { |
1046 | ieee80211_wake_vif_queues(local, sdata, | |
1047 | IEEE80211_QUEUE_STOP_REASON_CSA); | |
1048 | sdata->csa_block_tx = false; | |
1049 | } | |
7578d575 | 1050 | |
0c21e632 LC |
1051 | sdata->vif.csa_active = false; |
1052 | ifmgd->csa_waiting_bcn = false; | |
1053 | ||
f1d65583 LC |
1054 | ret = drv_post_channel_switch(sdata); |
1055 | if (ret) { | |
1056 | sdata_info(sdata, | |
1057 | "driver post channel switch failed, disconnecting\n"); | |
1058 | ieee80211_queue_work(&local->hw, | |
1059 | &ifmgd->csa_connection_drop_work); | |
0c21e632 | 1060 | return; |
f1d65583 | 1061 | } |
688b1ecf LC |
1062 | |
1063 | cfg80211_ch_switch_notify(sdata->dev, &sdata->reserved_chandef); | |
cc32abd4 JB |
1064 | } |
1065 | ||
5ce6e438 JB |
1066 | void ieee80211_chswitch_done(struct ieee80211_vif *vif, bool success) |
1067 | { | |
55de908a JB |
1068 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); |
1069 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
5ce6e438 JB |
1070 | |
1071 | trace_api_chswitch_done(sdata, success); | |
1072 | if (!success) { | |
882a7c69 JB |
1073 | sdata_info(sdata, |
1074 | "driver channel switch failed, disconnecting\n"); | |
1075 | ieee80211_queue_work(&sdata->local->hw, | |
1076 | &ifmgd->csa_connection_drop_work); | |
1077 | } else { | |
1078 | ieee80211_queue_work(&sdata->local->hw, &ifmgd->chswitch_work); | |
5ce6e438 | 1079 | } |
5ce6e438 JB |
1080 | } |
1081 | EXPORT_SYMBOL(ieee80211_chswitch_done); | |
1082 | ||
cc32abd4 JB |
1083 | static void ieee80211_chswitch_timer(unsigned long data) |
1084 | { | |
1085 | struct ieee80211_sub_if_data *sdata = | |
1086 | (struct ieee80211_sub_if_data *) data; | |
5bb644a0 | 1087 | |
9b7d72c1 | 1088 | ieee80211_queue_work(&sdata->local->hw, &sdata->u.mgd.chswitch_work); |
cc32abd4 JB |
1089 | } |
1090 | ||
37799e52 | 1091 | static void |
4a3cb702 | 1092 | ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata, |
2ba45384 LC |
1093 | u64 timestamp, u32 device_timestamp, |
1094 | struct ieee802_11_elems *elems, | |
04a161f4 | 1095 | bool beacon) |
cc32abd4 | 1096 | { |
b4f286a1 | 1097 | struct ieee80211_local *local = sdata->local; |
cc32abd4 | 1098 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
37799e52 | 1099 | struct cfg80211_bss *cbss = ifmgd->associated; |
4c3ebc56 | 1100 | struct ieee80211_chanctx_conf *conf; |
55de908a | 1101 | struct ieee80211_chanctx *chanctx; |
e6b7cde4 | 1102 | enum ieee80211_band current_band; |
c0f17eb9 | 1103 | struct ieee80211_csa_ie csa_ie; |
6d027bcc | 1104 | struct ieee80211_channel_switch ch_switch; |
e6b7cde4 | 1105 | int res; |
cc32abd4 | 1106 | |
8d61ffa5 | 1107 | sdata_assert_lock(sdata); |
77fdaa12 | 1108 | |
37799e52 | 1109 | if (!cbss) |
cc32abd4 JB |
1110 | return; |
1111 | ||
b4f286a1 | 1112 | if (local->scanning) |
cc32abd4 JB |
1113 | return; |
1114 | ||
37799e52 | 1115 | /* disregard subsequent announcements if we are already processing */ |
3e2a0226 | 1116 | if (sdata->vif.csa_active) |
cc32abd4 JB |
1117 | return; |
1118 | ||
e6b7cde4 | 1119 | current_band = cbss->channel->band; |
c0f17eb9 | 1120 | memset(&csa_ie, 0, sizeof(csa_ie)); |
84469a45 | 1121 | res = ieee80211_parse_ch_switch_ie(sdata, elems, current_band, |
e6b7cde4 | 1122 | ifmgd->flags, |
c0f17eb9 | 1123 | ifmgd->associated->bssid, &csa_ie); |
e6b7cde4 | 1124 | if (res < 0) |
b4f286a1 | 1125 | ieee80211_queue_work(&local->hw, |
882a7c69 | 1126 | &ifmgd->csa_connection_drop_work); |
e6b7cde4 | 1127 | if (res) |
cc32abd4 | 1128 | return; |
cd64f2a9 | 1129 | |
c0f17eb9 | 1130 | if (!cfg80211_chandef_usable(local->hw.wiphy, &csa_ie.chandef, |
85220d71 JB |
1131 | IEEE80211_CHAN_DISABLED)) { |
1132 | sdata_info(sdata, | |
1133 | "AP %pM switches to unsupported channel (%d MHz, width:%d, CF1/2: %d/%d MHz), disconnecting\n", | |
e6b7cde4 | 1134 | ifmgd->associated->bssid, |
c0f17eb9 CYY |
1135 | csa_ie.chandef.chan->center_freq, |
1136 | csa_ie.chandef.width, csa_ie.chandef.center_freq1, | |
1137 | csa_ie.chandef.center_freq2); | |
85220d71 JB |
1138 | ieee80211_queue_work(&local->hw, |
1139 | &ifmgd->csa_connection_drop_work); | |
1140 | return; | |
1141 | } | |
1142 | ||
f84eaa10 JB |
1143 | if (cfg80211_chandef_identical(&csa_ie.chandef, |
1144 | &sdata->vif.bss_conf.chandef)) { | |
1145 | if (ifmgd->csa_ignored_same_chan) | |
1146 | return; | |
1147 | sdata_info(sdata, | |
1148 | "AP %pM tries to chanswitch to same channel, ignore\n", | |
1149 | ifmgd->associated->bssid); | |
1150 | ifmgd->csa_ignored_same_chan = true; | |
1151 | return; | |
1152 | } | |
1153 | ||
c5a71688 AN |
1154 | /* |
1155 | * Drop all TDLS peers - either we disconnect or move to a different | |
1156 | * channel from this point on. There's no telling what our peer will do. | |
1157 | * The TDLS WIDER_BW scenario is also problematic, as peers might now | |
1158 | * have an incompatible wider chandef. | |
1159 | */ | |
1160 | ieee80211_teardown_tdls_peers(sdata); | |
1161 | ||
4c3ebc56 | 1162 | mutex_lock(&local->mtx); |
7578d575 | 1163 | mutex_lock(&local->chanctx_mtx); |
4c3ebc56 MK |
1164 | conf = rcu_dereference_protected(sdata->vif.chanctx_conf, |
1165 | lockdep_is_held(&local->chanctx_mtx)); | |
1166 | if (!conf) { | |
1167 | sdata_info(sdata, | |
1168 | "no channel context assigned to vif?, disconnecting\n"); | |
f3b0bbb3 | 1169 | goto drop_connection; |
4c3ebc56 MK |
1170 | } |
1171 | ||
1172 | chanctx = container_of(conf, struct ieee80211_chanctx, conf); | |
1173 | ||
0f791eb4 | 1174 | if (local->use_chanctx && |
30686bf7 | 1175 | !ieee80211_hw_check(&local->hw, CHANCTX_STA_CSA)) { |
0f791eb4 LC |
1176 | sdata_info(sdata, |
1177 | "driver doesn't support chan-switch with channel contexts\n"); | |
f3b0bbb3 | 1178 | goto drop_connection; |
55de908a JB |
1179 | } |
1180 | ||
6d027bcc LC |
1181 | ch_switch.timestamp = timestamp; |
1182 | ch_switch.device_timestamp = device_timestamp; | |
1183 | ch_switch.block_tx = csa_ie.mode; | |
1184 | ch_switch.chandef = csa_ie.chandef; | |
1185 | ch_switch.count = csa_ie.count; | |
1186 | ||
1187 | if (drv_pre_channel_switch(sdata, &ch_switch)) { | |
1188 | sdata_info(sdata, | |
1189 | "preparing for channel switch failed, disconnecting\n"); | |
f3b0bbb3 | 1190 | goto drop_connection; |
6d027bcc LC |
1191 | } |
1192 | ||
4c3ebc56 MK |
1193 | res = ieee80211_vif_reserve_chanctx(sdata, &csa_ie.chandef, |
1194 | chanctx->mode, false); | |
1195 | if (res) { | |
55de908a | 1196 | sdata_info(sdata, |
4c3ebc56 MK |
1197 | "failed to reserve channel context for channel switch, disconnecting (err=%d)\n", |
1198 | res); | |
f3b0bbb3 | 1199 | goto drop_connection; |
55de908a | 1200 | } |
b4f286a1 | 1201 | mutex_unlock(&local->chanctx_mtx); |
55de908a | 1202 | |
c46a73f3 | 1203 | sdata->vif.csa_active = true; |
4c3ebc56 | 1204 | sdata->csa_chandef = csa_ie.chandef; |
59af6928 | 1205 | sdata->csa_block_tx = csa_ie.mode; |
f84eaa10 | 1206 | ifmgd->csa_ignored_same_chan = false; |
55de908a | 1207 | |
59af6928 | 1208 | if (sdata->csa_block_tx) |
a46992b4 LC |
1209 | ieee80211_stop_vif_queues(local, sdata, |
1210 | IEEE80211_QUEUE_STOP_REASON_CSA); | |
59af6928 | 1211 | mutex_unlock(&local->mtx); |
57eebdf3 | 1212 | |
2f457293 LC |
1213 | cfg80211_ch_switch_started_notify(sdata->dev, &csa_ie.chandef, |
1214 | csa_ie.count); | |
1215 | ||
b4f286a1 | 1216 | if (local->ops->channel_switch) { |
5ce6e438 | 1217 | /* use driver's channel switch callback */ |
0f791eb4 | 1218 | drv_channel_switch(local, sdata, &ch_switch); |
5ce6e438 JB |
1219 | return; |
1220 | } | |
1221 | ||
1222 | /* channel switch handled in software */ | |
c0f17eb9 | 1223 | if (csa_ie.count <= 1) |
b4f286a1 | 1224 | ieee80211_queue_work(&local->hw, &ifmgd->chswitch_work); |
57eebdf3 | 1225 | else |
cc32abd4 | 1226 | mod_timer(&ifmgd->chswitch_timer, |
ff1e417c LC |
1227 | TU_TO_EXP_TIME((csa_ie.count - 1) * |
1228 | cbss->beacon_interval)); | |
f3b0bbb3 JB |
1229 | return; |
1230 | drop_connection: | |
1231 | ieee80211_queue_work(&local->hw, &ifmgd->csa_connection_drop_work); | |
1232 | mutex_unlock(&local->chanctx_mtx); | |
1233 | mutex_unlock(&local->mtx); | |
cc32abd4 JB |
1234 | } |
1235 | ||
24a4e400 SG |
1236 | static bool |
1237 | ieee80211_find_80211h_pwr_constr(struct ieee80211_sub_if_data *sdata, | |
1238 | struct ieee80211_channel *channel, | |
1239 | const u8 *country_ie, u8 country_ie_len, | |
1240 | const u8 *pwr_constr_elem, | |
1241 | int *chan_pwr, int *pwr_reduction) | |
cc32abd4 | 1242 | { |
04b7b2ff JB |
1243 | struct ieee80211_country_ie_triplet *triplet; |
1244 | int chan = ieee80211_frequency_to_channel(channel->center_freq); | |
24a4e400 | 1245 | int i, chan_increment; |
04b7b2ff | 1246 | bool have_chan_pwr = false; |
cc32abd4 | 1247 | |
04b7b2ff JB |
1248 | /* Invalid IE */ |
1249 | if (country_ie_len % 2 || country_ie_len < IEEE80211_COUNTRY_IE_MIN_LEN) | |
24a4e400 | 1250 | return false; |
cc32abd4 | 1251 | |
04b7b2ff JB |
1252 | triplet = (void *)(country_ie + 3); |
1253 | country_ie_len -= 3; | |
1254 | ||
1255 | switch (channel->band) { | |
1256 | default: | |
1257 | WARN_ON_ONCE(1); | |
1258 | /* fall through */ | |
1259 | case IEEE80211_BAND_2GHZ: | |
1260 | case IEEE80211_BAND_60GHZ: | |
1261 | chan_increment = 1; | |
1262 | break; | |
1263 | case IEEE80211_BAND_5GHZ: | |
1264 | chan_increment = 4; | |
1265 | break; | |
cc32abd4 | 1266 | } |
04b7b2ff JB |
1267 | |
1268 | /* find channel */ | |
1269 | while (country_ie_len >= 3) { | |
1270 | u8 first_channel = triplet->chans.first_channel; | |
1271 | ||
1272 | if (first_channel >= IEEE80211_COUNTRY_EXTENSION_ID) | |
1273 | goto next; | |
1274 | ||
1275 | for (i = 0; i < triplet->chans.num_channels; i++) { | |
1276 | if (first_channel + i * chan_increment == chan) { | |
1277 | have_chan_pwr = true; | |
24a4e400 | 1278 | *chan_pwr = triplet->chans.max_power; |
04b7b2ff JB |
1279 | break; |
1280 | } | |
1281 | } | |
1282 | if (have_chan_pwr) | |
1283 | break; | |
1284 | ||
1285 | next: | |
1286 | triplet++; | |
1287 | country_ie_len -= 3; | |
1288 | } | |
1289 | ||
a5fee9cb | 1290 | if (have_chan_pwr && pwr_constr_elem) |
24a4e400 | 1291 | *pwr_reduction = *pwr_constr_elem; |
a5fee9cb MB |
1292 | else |
1293 | *pwr_reduction = 0; | |
1294 | ||
24a4e400 SG |
1295 | return have_chan_pwr; |
1296 | } | |
1297 | ||
c8d65917 SG |
1298 | static void ieee80211_find_cisco_dtpc(struct ieee80211_sub_if_data *sdata, |
1299 | struct ieee80211_channel *channel, | |
1300 | const u8 *cisco_dtpc_ie, | |
1301 | int *pwr_level) | |
1302 | { | |
1303 | /* From practical testing, the first data byte of the DTPC element | |
1304 | * seems to contain the requested dBm level, and the CLI on Cisco | |
1305 | * APs clearly state the range is -127 to 127 dBm, which indicates | |
1306 | * a signed byte, although it seemingly never actually goes negative. | |
1307 | * The other byte seems to always be zero. | |
1308 | */ | |
1309 | *pwr_level = (__s8)cisco_dtpc_ie[4]; | |
1310 | } | |
1311 | ||
24a4e400 SG |
1312 | static u32 ieee80211_handle_pwr_constr(struct ieee80211_sub_if_data *sdata, |
1313 | struct ieee80211_channel *channel, | |
1314 | struct ieee80211_mgmt *mgmt, | |
1315 | const u8 *country_ie, u8 country_ie_len, | |
c8d65917 SG |
1316 | const u8 *pwr_constr_ie, |
1317 | const u8 *cisco_dtpc_ie) | |
24a4e400 | 1318 | { |
c8d65917 SG |
1319 | bool has_80211h_pwr = false, has_cisco_pwr = false; |
1320 | int chan_pwr = 0, pwr_reduction_80211h = 0; | |
1321 | int pwr_level_cisco, pwr_level_80211h; | |
24a4e400 | 1322 | int new_ap_level; |
a5fee9cb | 1323 | __le16 capab = mgmt->u.probe_resp.capab_info; |
04b7b2ff | 1324 | |
a5fee9cb MB |
1325 | if (country_ie && |
1326 | (capab & cpu_to_le16(WLAN_CAPABILITY_SPECTRUM_MGMT) || | |
1327 | capab & cpu_to_le16(WLAN_CAPABILITY_RADIO_MEASURE))) { | |
24a4e400 SG |
1328 | has_80211h_pwr = ieee80211_find_80211h_pwr_constr( |
1329 | sdata, channel, country_ie, country_ie_len, | |
1330 | pwr_constr_ie, &chan_pwr, &pwr_reduction_80211h); | |
c8d65917 SG |
1331 | pwr_level_80211h = |
1332 | max_t(int, 0, chan_pwr - pwr_reduction_80211h); | |
1333 | } | |
1334 | ||
1335 | if (cisco_dtpc_ie) { | |
1336 | ieee80211_find_cisco_dtpc( | |
1337 | sdata, channel, cisco_dtpc_ie, &pwr_level_cisco); | |
1338 | has_cisco_pwr = true; | |
24a4e400 | 1339 | } |
04b7b2ff | 1340 | |
c8d65917 | 1341 | if (!has_80211h_pwr && !has_cisco_pwr) |
1ea6f9c0 | 1342 | return 0; |
04b7b2ff | 1343 | |
c8d65917 SG |
1344 | /* If we have both 802.11h and Cisco DTPC, apply both limits |
1345 | * by picking the smallest of the two power levels advertised. | |
1346 | */ | |
1347 | if (has_80211h_pwr && | |
1348 | (!has_cisco_pwr || pwr_level_80211h <= pwr_level_cisco)) { | |
a87da0cb JB |
1349 | new_ap_level = pwr_level_80211h; |
1350 | ||
1351 | if (sdata->ap_power_level == new_ap_level) | |
1352 | return 0; | |
1353 | ||
cef2fc1c JL |
1354 | sdata_dbg(sdata, |
1355 | "Limiting TX power to %d (%d - %d) dBm as advertised by %pM\n", | |
1356 | pwr_level_80211h, chan_pwr, pwr_reduction_80211h, | |
1357 | sdata->u.mgd.bssid); | |
c8d65917 | 1358 | } else { /* has_cisco_pwr is always true here. */ |
a87da0cb JB |
1359 | new_ap_level = pwr_level_cisco; |
1360 | ||
1361 | if (sdata->ap_power_level == new_ap_level) | |
1362 | return 0; | |
1363 | ||
cef2fc1c JL |
1364 | sdata_dbg(sdata, |
1365 | "Limiting TX power to %d dBm as advertised by %pM\n", | |
1366 | pwr_level_cisco, sdata->u.mgd.bssid); | |
c8d65917 | 1367 | } |
04b7b2ff | 1368 | |
1ea6f9c0 JB |
1369 | sdata->ap_power_level = new_ap_level; |
1370 | if (__ieee80211_recalc_txpower(sdata)) | |
1371 | return BSS_CHANGED_TXPOWER; | |
1372 | return 0; | |
cc32abd4 JB |
1373 | } |
1374 | ||
965bedad JB |
1375 | /* powersave */ |
1376 | static void ieee80211_enable_ps(struct ieee80211_local *local, | |
1377 | struct ieee80211_sub_if_data *sdata) | |
1378 | { | |
1379 | struct ieee80211_conf *conf = &local->hw.conf; | |
1380 | ||
d5edaedc JB |
1381 | /* |
1382 | * If we are scanning right now then the parameters will | |
1383 | * take effect when scan finishes. | |
1384 | */ | |
fbe9c429 | 1385 | if (local->scanning) |
d5edaedc JB |
1386 | return; |
1387 | ||
965bedad | 1388 | if (conf->dynamic_ps_timeout > 0 && |
30686bf7 | 1389 | !ieee80211_hw_check(&local->hw, SUPPORTS_DYNAMIC_PS)) { |
965bedad JB |
1390 | mod_timer(&local->dynamic_ps_timer, jiffies + |
1391 | msecs_to_jiffies(conf->dynamic_ps_timeout)); | |
1392 | } else { | |
30686bf7 | 1393 | if (ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK)) |
076cdcb1 | 1394 | ieee80211_send_nullfunc(local, sdata, true); |
375177bf | 1395 | |
30686bf7 JB |
1396 | if (ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK) && |
1397 | ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) | |
2a13052f JO |
1398 | return; |
1399 | ||
1400 | conf->flags |= IEEE80211_CONF_PS; | |
1401 | ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); | |
965bedad JB |
1402 | } |
1403 | } | |
1404 | ||
1405 | static void ieee80211_change_ps(struct ieee80211_local *local) | |
1406 | { | |
1407 | struct ieee80211_conf *conf = &local->hw.conf; | |
1408 | ||
1409 | if (local->ps_sdata) { | |
965bedad JB |
1410 | ieee80211_enable_ps(local, local->ps_sdata); |
1411 | } else if (conf->flags & IEEE80211_CONF_PS) { | |
1412 | conf->flags &= ~IEEE80211_CONF_PS; | |
1413 | ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); | |
1414 | del_timer_sync(&local->dynamic_ps_timer); | |
1415 | cancel_work_sync(&local->dynamic_ps_enable_work); | |
1416 | } | |
1417 | } | |
1418 | ||
808118cb JY |
1419 | static bool ieee80211_powersave_allowed(struct ieee80211_sub_if_data *sdata) |
1420 | { | |
1421 | struct ieee80211_if_managed *mgd = &sdata->u.mgd; | |
1422 | struct sta_info *sta = NULL; | |
c2c98fde | 1423 | bool authorized = false; |
808118cb JY |
1424 | |
1425 | if (!mgd->powersave) | |
1426 | return false; | |
1427 | ||
05cb9108 JB |
1428 | if (mgd->broken_ap) |
1429 | return false; | |
1430 | ||
808118cb JY |
1431 | if (!mgd->associated) |
1432 | return false; | |
1433 | ||
392b9ffb | 1434 | if (mgd->flags & IEEE80211_STA_CONNECTION_POLL) |
808118cb JY |
1435 | return false; |
1436 | ||
989c6505 | 1437 | if (!mgd->have_beacon) |
ce857888 AB |
1438 | return false; |
1439 | ||
808118cb JY |
1440 | rcu_read_lock(); |
1441 | sta = sta_info_get(sdata, mgd->bssid); | |
1442 | if (sta) | |
c2c98fde | 1443 | authorized = test_sta_flag(sta, WLAN_STA_AUTHORIZED); |
808118cb JY |
1444 | rcu_read_unlock(); |
1445 | ||
c2c98fde | 1446 | return authorized; |
808118cb JY |
1447 | } |
1448 | ||
965bedad | 1449 | /* need to hold RTNL or interface lock */ |
4a733ef1 | 1450 | void ieee80211_recalc_ps(struct ieee80211_local *local) |
965bedad JB |
1451 | { |
1452 | struct ieee80211_sub_if_data *sdata, *found = NULL; | |
1453 | int count = 0; | |
195e294d | 1454 | int timeout; |
965bedad | 1455 | |
30686bf7 | 1456 | if (!ieee80211_hw_check(&local->hw, SUPPORTS_PS)) { |
965bedad JB |
1457 | local->ps_sdata = NULL; |
1458 | return; | |
1459 | } | |
1460 | ||
1461 | list_for_each_entry(sdata, &local->interfaces, list) { | |
9607e6b6 | 1462 | if (!ieee80211_sdata_running(sdata)) |
965bedad | 1463 | continue; |
8c7914de RM |
1464 | if (sdata->vif.type == NL80211_IFTYPE_AP) { |
1465 | /* If an AP vif is found, then disable PS | |
1466 | * by setting the count to zero thereby setting | |
1467 | * ps_sdata to NULL. | |
1468 | */ | |
1469 | count = 0; | |
1470 | break; | |
1471 | } | |
965bedad JB |
1472 | if (sdata->vif.type != NL80211_IFTYPE_STATION) |
1473 | continue; | |
1474 | found = sdata; | |
1475 | count++; | |
1476 | } | |
1477 | ||
808118cb | 1478 | if (count == 1 && ieee80211_powersave_allowed(found)) { |
4a733ef1 | 1479 | u8 dtimper = found->u.mgd.dtim_period; |
10f644a4 JB |
1480 | s32 beaconint_us; |
1481 | ||
10f644a4 JB |
1482 | beaconint_us = ieee80211_tu_to_usec( |
1483 | found->vif.bss_conf.beacon_int); | |
1484 | ||
ff616381 | 1485 | timeout = local->dynamic_ps_forced_timeout; |
4a733ef1 JB |
1486 | if (timeout < 0) |
1487 | timeout = 100; | |
09b85568 | 1488 | local->hw.conf.dynamic_ps_timeout = timeout; |
195e294d | 1489 | |
4a733ef1 JB |
1490 | /* If the TIM IE is invalid, pretend the value is 1 */ |
1491 | if (!dtimper) | |
1492 | dtimper = 1; | |
1493 | ||
1494 | local->hw.conf.ps_dtim_period = dtimper; | |
1495 | local->ps_sdata = found; | |
10f644a4 | 1496 | } else { |
965bedad | 1497 | local->ps_sdata = NULL; |
10f644a4 | 1498 | } |
965bedad JB |
1499 | |
1500 | ieee80211_change_ps(local); | |
1501 | } | |
1502 | ||
ab095877 EP |
1503 | void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata) |
1504 | { | |
1505 | bool ps_allowed = ieee80211_powersave_allowed(sdata); | |
1506 | ||
1507 | if (sdata->vif.bss_conf.ps != ps_allowed) { | |
1508 | sdata->vif.bss_conf.ps = ps_allowed; | |
1509 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_PS); | |
1510 | } | |
1511 | } | |
1512 | ||
965bedad JB |
1513 | void ieee80211_dynamic_ps_disable_work(struct work_struct *work) |
1514 | { | |
1515 | struct ieee80211_local *local = | |
1516 | container_of(work, struct ieee80211_local, | |
1517 | dynamic_ps_disable_work); | |
1518 | ||
1519 | if (local->hw.conf.flags & IEEE80211_CONF_PS) { | |
1520 | local->hw.conf.flags &= ~IEEE80211_CONF_PS; | |
1521 | ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); | |
1522 | } | |
1523 | ||
1524 | ieee80211_wake_queues_by_reason(&local->hw, | |
445ea4e8 | 1525 | IEEE80211_MAX_QUEUE_MAP, |
cca07b00 LC |
1526 | IEEE80211_QUEUE_STOP_REASON_PS, |
1527 | false); | |
965bedad JB |
1528 | } |
1529 | ||
1530 | void ieee80211_dynamic_ps_enable_work(struct work_struct *work) | |
1531 | { | |
1532 | struct ieee80211_local *local = | |
1533 | container_of(work, struct ieee80211_local, | |
1534 | dynamic_ps_enable_work); | |
1535 | struct ieee80211_sub_if_data *sdata = local->ps_sdata; | |
5e34069c | 1536 | struct ieee80211_if_managed *ifmgd; |
1ddc2867 RM |
1537 | unsigned long flags; |
1538 | int q; | |
965bedad JB |
1539 | |
1540 | /* can only happen when PS was just disabled anyway */ | |
1541 | if (!sdata) | |
1542 | return; | |
1543 | ||
5e34069c CL |
1544 | ifmgd = &sdata->u.mgd; |
1545 | ||
965bedad JB |
1546 | if (local->hw.conf.flags & IEEE80211_CONF_PS) |
1547 | return; | |
1548 | ||
09b85568 | 1549 | if (local->hw.conf.dynamic_ps_timeout > 0) { |
77b7023a AN |
1550 | /* don't enter PS if TX frames are pending */ |
1551 | if (drv_tx_frames_pending(local)) { | |
1ddc2867 RM |
1552 | mod_timer(&local->dynamic_ps_timer, jiffies + |
1553 | msecs_to_jiffies( | |
1554 | local->hw.conf.dynamic_ps_timeout)); | |
1555 | return; | |
1556 | } | |
77b7023a AN |
1557 | |
1558 | /* | |
1559 | * transmission can be stopped by others which leads to | |
1560 | * dynamic_ps_timer expiry. Postpone the ps timer if it | |
1561 | * is not the actual idle state. | |
1562 | */ | |
1563 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); | |
1564 | for (q = 0; q < local->hw.queues; q++) { | |
1565 | if (local->queue_stop_reasons[q]) { | |
1566 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, | |
1567 | flags); | |
1568 | mod_timer(&local->dynamic_ps_timer, jiffies + | |
1569 | msecs_to_jiffies( | |
1570 | local->hw.conf.dynamic_ps_timeout)); | |
1571 | return; | |
1572 | } | |
1573 | } | |
1574 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
1ddc2867 | 1575 | } |
1ddc2867 | 1576 | |
30686bf7 | 1577 | if (ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK) && |
9c38a8b4 | 1578 | !(ifmgd->flags & IEEE80211_STA_NULLFUNC_ACKED)) { |
a1598383 | 1579 | if (drv_tx_frames_pending(local)) { |
e8306f98 VN |
1580 | mod_timer(&local->dynamic_ps_timer, jiffies + |
1581 | msecs_to_jiffies( | |
1582 | local->hw.conf.dynamic_ps_timeout)); | |
a1598383 | 1583 | } else { |
076cdcb1 | 1584 | ieee80211_send_nullfunc(local, sdata, true); |
e8306f98 | 1585 | /* Flush to get the tx status of nullfunc frame */ |
3b24f4c6 | 1586 | ieee80211_flush_queues(local, sdata, false); |
e8306f98 | 1587 | } |
f3e85b9e VN |
1588 | } |
1589 | ||
30686bf7 JB |
1590 | if (!(ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS) && |
1591 | ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK)) || | |
375177bf VN |
1592 | (ifmgd->flags & IEEE80211_STA_NULLFUNC_ACKED)) { |
1593 | ifmgd->flags &= ~IEEE80211_STA_NULLFUNC_ACKED; | |
1594 | local->hw.conf.flags |= IEEE80211_CONF_PS; | |
1595 | ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); | |
1596 | } | |
965bedad JB |
1597 | } |
1598 | ||
1599 | void ieee80211_dynamic_ps_timer(unsigned long data) | |
1600 | { | |
1601 | struct ieee80211_local *local = (void *) data; | |
1602 | ||
42935eca | 1603 | ieee80211_queue_work(&local->hw, &local->dynamic_ps_enable_work); |
965bedad JB |
1604 | } |
1605 | ||
164eb02d SW |
1606 | void ieee80211_dfs_cac_timer_work(struct work_struct *work) |
1607 | { | |
a85a7e28 | 1608 | struct delayed_work *delayed_work = to_delayed_work(work); |
164eb02d SW |
1609 | struct ieee80211_sub_if_data *sdata = |
1610 | container_of(delayed_work, struct ieee80211_sub_if_data, | |
1611 | dfs_cac_timer_work); | |
d2859df5 | 1612 | struct cfg80211_chan_def chandef = sdata->vif.bss_conf.chandef; |
164eb02d | 1613 | |
34a3740d JB |
1614 | mutex_lock(&sdata->local->mtx); |
1615 | if (sdata->wdev.cac_started) { | |
1616 | ieee80211_vif_release_channel(sdata); | |
1617 | cfg80211_cac_event(sdata->dev, &chandef, | |
1618 | NL80211_RADAR_CAC_FINISHED, | |
1619 | GFP_KERNEL); | |
1620 | } | |
1621 | mutex_unlock(&sdata->local->mtx); | |
164eb02d SW |
1622 | } |
1623 | ||
02219b3a JB |
1624 | static bool |
1625 | __ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata) | |
1626 | { | |
1627 | struct ieee80211_local *local = sdata->local; | |
1628 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
cc72f6e2 | 1629 | bool ret = false; |
02219b3a JB |
1630 | int ac; |
1631 | ||
1632 | if (local->hw.queues < IEEE80211_NUM_ACS) | |
1633 | return false; | |
1634 | ||
1635 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { | |
1636 | struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac]; | |
1637 | int non_acm_ac; | |
1638 | unsigned long now = jiffies; | |
1639 | ||
1640 | if (tx_tspec->action == TX_TSPEC_ACTION_NONE && | |
1641 | tx_tspec->admitted_time && | |
1642 | time_after(now, tx_tspec->time_slice_start + HZ)) { | |
1643 | tx_tspec->consumed_tx_time = 0; | |
1644 | tx_tspec->time_slice_start = now; | |
1645 | ||
1646 | if (tx_tspec->downgraded) | |
1647 | tx_tspec->action = | |
1648 | TX_TSPEC_ACTION_STOP_DOWNGRADE; | |
1649 | } | |
1650 | ||
1651 | switch (tx_tspec->action) { | |
1652 | case TX_TSPEC_ACTION_STOP_DOWNGRADE: | |
1653 | /* take the original parameters */ | |
1654 | if (drv_conf_tx(local, sdata, ac, &sdata->tx_conf[ac])) | |
1655 | sdata_err(sdata, | |
1656 | "failed to set TX queue parameters for queue %d\n", | |
1657 | ac); | |
1658 | tx_tspec->action = TX_TSPEC_ACTION_NONE; | |
1659 | tx_tspec->downgraded = false; | |
1660 | ret = true; | |
1661 | break; | |
1662 | case TX_TSPEC_ACTION_DOWNGRADE: | |
1663 | if (time_after(now, tx_tspec->time_slice_start + HZ)) { | |
1664 | tx_tspec->action = TX_TSPEC_ACTION_NONE; | |
1665 | ret = true; | |
1666 | break; | |
1667 | } | |
1668 | /* downgrade next lower non-ACM AC */ | |
1669 | for (non_acm_ac = ac + 1; | |
1670 | non_acm_ac < IEEE80211_NUM_ACS; | |
1671 | non_acm_ac++) | |
1672 | if (!(sdata->wmm_acm & BIT(7 - 2 * non_acm_ac))) | |
1673 | break; | |
1674 | /* The loop will result in using BK even if it requires | |
1675 | * admission control, such configuration makes no sense | |
1676 | * and we have to transmit somehow - the AC selection | |
1677 | * does the same thing. | |
1678 | */ | |
1679 | if (drv_conf_tx(local, sdata, ac, | |
1680 | &sdata->tx_conf[non_acm_ac])) | |
1681 | sdata_err(sdata, | |
1682 | "failed to set TX queue parameters for queue %d\n", | |
1683 | ac); | |
1684 | tx_tspec->action = TX_TSPEC_ACTION_NONE; | |
1685 | ret = true; | |
1686 | schedule_delayed_work(&ifmgd->tx_tspec_wk, | |
1687 | tx_tspec->time_slice_start + HZ - now + 1); | |
1688 | break; | |
1689 | case TX_TSPEC_ACTION_NONE: | |
1690 | /* nothing now */ | |
1691 | break; | |
1692 | } | |
1693 | } | |
1694 | ||
1695 | return ret; | |
1696 | } | |
1697 | ||
1698 | void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata) | |
1699 | { | |
1700 | if (__ieee80211_sta_handle_tspec_ac_params(sdata)) | |
1701 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS); | |
1702 | } | |
1703 | ||
1704 | static void ieee80211_sta_handle_tspec_ac_params_wk(struct work_struct *work) | |
1705 | { | |
1706 | struct ieee80211_sub_if_data *sdata; | |
1707 | ||
1708 | sdata = container_of(work, struct ieee80211_sub_if_data, | |
1709 | u.mgd.tx_tspec_wk.work); | |
1710 | ieee80211_sta_handle_tspec_ac_params(sdata); | |
1711 | } | |
1712 | ||
60f8b39c | 1713 | /* MLME */ |
7d25745d | 1714 | static bool ieee80211_sta_wmm_params(struct ieee80211_local *local, |
4ced3f74 | 1715 | struct ieee80211_sub_if_data *sdata, |
4a3cb702 | 1716 | const u8 *wmm_param, size_t wmm_param_len) |
f0706e82 | 1717 | { |
2ed77ea6 | 1718 | struct ieee80211_tx_queue_params params[IEEE80211_NUM_ACS]; |
4ced3f74 | 1719 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
f0706e82 | 1720 | size_t left; |
2ed77ea6 | 1721 | int count, ac; |
4a3cb702 JB |
1722 | const u8 *pos; |
1723 | u8 uapsd_queues = 0; | |
f0706e82 | 1724 | |
e1b3ec1a | 1725 | if (!local->ops->conf_tx) |
7d25745d | 1726 | return false; |
e1b3ec1a | 1727 | |
32c5057b | 1728 | if (local->hw.queues < IEEE80211_NUM_ACS) |
7d25745d | 1729 | return false; |
3434fbd3 JB |
1730 | |
1731 | if (!wmm_param) | |
7d25745d | 1732 | return false; |
3434fbd3 | 1733 | |
f0706e82 | 1734 | if (wmm_param_len < 8 || wmm_param[5] /* version */ != 1) |
7d25745d | 1735 | return false; |
ab13315a KV |
1736 | |
1737 | if (ifmgd->flags & IEEE80211_STA_UAPSD_ENABLED) | |
dc41e4d4 | 1738 | uapsd_queues = ifmgd->uapsd_queues; |
ab13315a | 1739 | |
f0706e82 | 1740 | count = wmm_param[6] & 0x0f; |
46900298 | 1741 | if (count == ifmgd->wmm_last_param_set) |
7d25745d | 1742 | return false; |
46900298 | 1743 | ifmgd->wmm_last_param_set = count; |
f0706e82 JB |
1744 | |
1745 | pos = wmm_param + 8; | |
1746 | left = wmm_param_len - 8; | |
1747 | ||
1748 | memset(¶ms, 0, sizeof(params)); | |
1749 | ||
00e96dec | 1750 | sdata->wmm_acm = 0; |
f0706e82 JB |
1751 | for (; left >= 4; left -= 4, pos += 4) { |
1752 | int aci = (pos[0] >> 5) & 0x03; | |
1753 | int acm = (pos[0] >> 4) & 0x01; | |
ab13315a | 1754 | bool uapsd = false; |
f0706e82 JB |
1755 | |
1756 | switch (aci) { | |
0eeb59fe | 1757 | case 1: /* AC_BK */ |
2ed77ea6 | 1758 | ac = IEEE80211_AC_BK; |
988c0f72 | 1759 | if (acm) |
00e96dec | 1760 | sdata->wmm_acm |= BIT(1) | BIT(2); /* BK/- */ |
ab13315a KV |
1761 | if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BK) |
1762 | uapsd = true; | |
f0706e82 | 1763 | break; |
0eeb59fe | 1764 | case 2: /* AC_VI */ |
2ed77ea6 | 1765 | ac = IEEE80211_AC_VI; |
988c0f72 | 1766 | if (acm) |
00e96dec | 1767 | sdata->wmm_acm |= BIT(4) | BIT(5); /* CL/VI */ |
ab13315a KV |
1768 | if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VI) |
1769 | uapsd = true; | |
f0706e82 | 1770 | break; |
0eeb59fe | 1771 | case 3: /* AC_VO */ |
2ed77ea6 | 1772 | ac = IEEE80211_AC_VO; |
988c0f72 | 1773 | if (acm) |
00e96dec | 1774 | sdata->wmm_acm |= BIT(6) | BIT(7); /* VO/NC */ |
ab13315a KV |
1775 | if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VO) |
1776 | uapsd = true; | |
f0706e82 | 1777 | break; |
0eeb59fe | 1778 | case 0: /* AC_BE */ |
f0706e82 | 1779 | default: |
2ed77ea6 | 1780 | ac = IEEE80211_AC_BE; |
988c0f72 | 1781 | if (acm) |
00e96dec | 1782 | sdata->wmm_acm |= BIT(0) | BIT(3); /* BE/EE */ |
ab13315a KV |
1783 | if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BE) |
1784 | uapsd = true; | |
f0706e82 JB |
1785 | break; |
1786 | } | |
1787 | ||
2ed77ea6 | 1788 | params[ac].aifs = pos[0] & 0x0f; |
730a7550 | 1789 | |
2ed77ea6 | 1790 | if (params[ac].aifs < 2) { |
730a7550 EG |
1791 | sdata_info(sdata, |
1792 | "AP has invalid WMM params (AIFSN=%d for ACI %d), will use 2\n", | |
2ed77ea6 JB |
1793 | params[ac].aifs, aci); |
1794 | params[ac].aifs = 2; | |
730a7550 | 1795 | } |
2ed77ea6 JB |
1796 | params[ac].cw_max = ecw2cw((pos[1] & 0xf0) >> 4); |
1797 | params[ac].cw_min = ecw2cw(pos[1] & 0x0f); | |
1798 | params[ac].txop = get_unaligned_le16(pos + 2); | |
1799 | params[ac].acm = acm; | |
1800 | params[ac].uapsd = uapsd; | |
ab13315a | 1801 | |
2ed77ea6 JB |
1802 | if (params[ac].cw_min > params[ac].cw_max) { |
1803 | sdata_info(sdata, | |
1804 | "AP has invalid WMM params (CWmin/max=%d/%d for ACI %d), using defaults\n", | |
1805 | params[ac].cw_min, params[ac].cw_max, aci); | |
1806 | return false; | |
1807 | } | |
1808 | } | |
1809 | ||
1810 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { | |
bdcbd8e0 | 1811 | mlme_dbg(sdata, |
2ed77ea6 JB |
1812 | "WMM AC=%d acm=%d aifs=%d cWmin=%d cWmax=%d txop=%d uapsd=%d, downgraded=%d\n", |
1813 | ac, params[ac].acm, | |
1814 | params[ac].aifs, params[ac].cw_min, params[ac].cw_max, | |
1815 | params[ac].txop, params[ac].uapsd, | |
1816 | ifmgd->tx_tspec[ac].downgraded); | |
1817 | sdata->tx_conf[ac] = params[ac]; | |
1818 | if (!ifmgd->tx_tspec[ac].downgraded && | |
1819 | drv_conf_tx(local, sdata, ac, ¶ms[ac])) | |
bdcbd8e0 | 1820 | sdata_err(sdata, |
2ed77ea6 JB |
1821 | "failed to set TX queue parameters for AC %d\n", |
1822 | ac); | |
f0706e82 | 1823 | } |
e1b3ec1a SG |
1824 | |
1825 | /* enable WMM or activate new settings */ | |
4ced3f74 | 1826 | sdata->vif.bss_conf.qos = true; |
7d25745d | 1827 | return true; |
f0706e82 JB |
1828 | } |
1829 | ||
925e64c3 SG |
1830 | static void __ieee80211_stop_poll(struct ieee80211_sub_if_data *sdata) |
1831 | { | |
1832 | lockdep_assert_held(&sdata->local->mtx); | |
1833 | ||
392b9ffb | 1834 | sdata->u.mgd.flags &= ~IEEE80211_STA_CONNECTION_POLL; |
925e64c3 SG |
1835 | ieee80211_run_deferred_scan(sdata->local); |
1836 | } | |
1837 | ||
1838 | static void ieee80211_stop_poll(struct ieee80211_sub_if_data *sdata) | |
1839 | { | |
1840 | mutex_lock(&sdata->local->mtx); | |
1841 | __ieee80211_stop_poll(sdata); | |
1842 | mutex_unlock(&sdata->local->mtx); | |
1843 | } | |
1844 | ||
7a5158ef JB |
1845 | static u32 ieee80211_handle_bss_capability(struct ieee80211_sub_if_data *sdata, |
1846 | u16 capab, bool erp_valid, u8 erp) | |
5628221c | 1847 | { |
bda3933a | 1848 | struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf; |
471b3efd | 1849 | u32 changed = 0; |
7a5158ef JB |
1850 | bool use_protection; |
1851 | bool use_short_preamble; | |
1852 | bool use_short_slot; | |
1853 | ||
1854 | if (erp_valid) { | |
1855 | use_protection = (erp & WLAN_ERP_USE_PROTECTION) != 0; | |
1856 | use_short_preamble = (erp & WLAN_ERP_BARKER_PREAMBLE) == 0; | |
1857 | } else { | |
1858 | use_protection = false; | |
1859 | use_short_preamble = !!(capab & WLAN_CAPABILITY_SHORT_PREAMBLE); | |
1860 | } | |
1861 | ||
1862 | use_short_slot = !!(capab & WLAN_CAPABILITY_SHORT_SLOT_TIME); | |
55de908a | 1863 | if (ieee80211_get_sdata_band(sdata) == IEEE80211_BAND_5GHZ) |
43d35343 | 1864 | use_short_slot = true; |
5628221c | 1865 | |
471b3efd | 1866 | if (use_protection != bss_conf->use_cts_prot) { |
471b3efd JB |
1867 | bss_conf->use_cts_prot = use_protection; |
1868 | changed |= BSS_CHANGED_ERP_CTS_PROT; | |
5628221c | 1869 | } |
7e9ed188 | 1870 | |
d43c7b37 | 1871 | if (use_short_preamble != bss_conf->use_short_preamble) { |
d43c7b37 | 1872 | bss_conf->use_short_preamble = use_short_preamble; |
471b3efd | 1873 | changed |= BSS_CHANGED_ERP_PREAMBLE; |
7e9ed188 | 1874 | } |
d9430a32 | 1875 | |
7a5158ef | 1876 | if (use_short_slot != bss_conf->use_short_slot) { |
7a5158ef JB |
1877 | bss_conf->use_short_slot = use_short_slot; |
1878 | changed |= BSS_CHANGED_ERP_SLOT; | |
50c4afb9 JL |
1879 | } |
1880 | ||
1881 | return changed; | |
1882 | } | |
1883 | ||
f698d856 | 1884 | static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata, |
0c1ad2ca | 1885 | struct cfg80211_bss *cbss, |
ae5eb026 | 1886 | u32 bss_info_changed) |
f0706e82 | 1887 | { |
0c1ad2ca | 1888 | struct ieee80211_bss *bss = (void *)cbss->priv; |
471b3efd | 1889 | struct ieee80211_local *local = sdata->local; |
68542962 | 1890 | struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf; |
d6f2da5b | 1891 | |
ae5eb026 | 1892 | bss_info_changed |= BSS_CHANGED_ASSOC; |
77fdaa12 | 1893 | bss_info_changed |= ieee80211_handle_bss_capability(sdata, |
50ae34a2 | 1894 | bss_conf->assoc_capability, bss->has_erp_value, bss->erp_value); |
21c0cbe7 | 1895 | |
7ccc8bd7 | 1896 | sdata->u.mgd.beacon_timeout = usecs_to_jiffies(ieee80211_tu_to_usec( |
59c1ec2b | 1897 | beacon_loss_count * bss_conf->beacon_int)); |
7ccc8bd7 | 1898 | |
0c1ad2ca JB |
1899 | sdata->u.mgd.associated = cbss; |
1900 | memcpy(sdata->u.mgd.bssid, cbss->bssid, ETH_ALEN); | |
f0706e82 | 1901 | |
17e4ec14 JM |
1902 | sdata->u.mgd.flags |= IEEE80211_STA_RESET_SIGNAL_AVE; |
1903 | ||
b115b972 JD |
1904 | if (sdata->vif.p2p || |
1905 | sdata->vif.driver_flags & IEEE80211_VIF_GET_NOA_UPDATE) { | |
9caf0364 | 1906 | const struct cfg80211_bss_ies *ies; |
488dd7b5 | 1907 | |
9caf0364 JB |
1908 | rcu_read_lock(); |
1909 | ies = rcu_dereference(cbss->ies); | |
1910 | if (ies) { | |
9caf0364 JB |
1911 | int ret; |
1912 | ||
1913 | ret = cfg80211_get_p2p_attr( | |
1914 | ies->data, ies->len, | |
1915 | IEEE80211_P2P_ATTR_ABSENCE_NOTICE, | |
67baf663 JD |
1916 | (u8 *) &bss_conf->p2p_noa_attr, |
1917 | sizeof(bss_conf->p2p_noa_attr)); | |
9caf0364 | 1918 | if (ret >= 2) { |
67baf663 JD |
1919 | sdata->u.mgd.p2p_noa_index = |
1920 | bss_conf->p2p_noa_attr.index; | |
9caf0364 | 1921 | bss_info_changed |= BSS_CHANGED_P2P_PS; |
9caf0364 | 1922 | } |
488dd7b5 | 1923 | } |
9caf0364 | 1924 | rcu_read_unlock(); |
488dd7b5 JB |
1925 | } |
1926 | ||
b291ba11 | 1927 | /* just to be sure */ |
925e64c3 | 1928 | ieee80211_stop_poll(sdata); |
b291ba11 | 1929 | |
9ac19a90 | 1930 | ieee80211_led_assoc(local, 1); |
9306102e | 1931 | |
989c6505 | 1932 | if (sdata->u.mgd.have_beacon) { |
826262c3 JB |
1933 | /* |
1934 | * If the AP is buggy we may get here with no DTIM period | |
1935 | * known, so assume it's 1 which is the only safe assumption | |
1936 | * in that case, although if the TIM IE is broken powersave | |
1937 | * probably just won't work at all. | |
1938 | */ | |
1939 | bss_conf->dtim_period = sdata->u.mgd.dtim_period ?: 1; | |
817cee76 | 1940 | bss_conf->beacon_rate = bss->beacon_rate; |
989c6505 | 1941 | bss_info_changed |= BSS_CHANGED_BEACON_INFO; |
826262c3 | 1942 | } else { |
817cee76 | 1943 | bss_conf->beacon_rate = NULL; |
e5b900d2 | 1944 | bss_conf->dtim_period = 0; |
826262c3 | 1945 | } |
e5b900d2 | 1946 | |
68542962 | 1947 | bss_conf->assoc = 1; |
9cef8737 | 1948 | |
a97c13c3 | 1949 | /* Tell the driver to monitor connection quality (if supported) */ |
ea086359 | 1950 | if (sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI && |
68542962 | 1951 | bss_conf->cqm_rssi_thold) |
a97c13c3 JO |
1952 | bss_info_changed |= BSS_CHANGED_CQM; |
1953 | ||
68542962 | 1954 | /* Enable ARP filtering */ |
0f19b41e | 1955 | if (bss_conf->arp_addr_cnt) |
68542962 | 1956 | bss_info_changed |= BSS_CHANGED_ARP_FILTER; |
68542962 | 1957 | |
ae5eb026 | 1958 | ieee80211_bss_info_change_notify(sdata, bss_info_changed); |
f0706e82 | 1959 | |
056508dc | 1960 | mutex_lock(&local->iflist_mtx); |
4a733ef1 | 1961 | ieee80211_recalc_ps(local); |
056508dc | 1962 | mutex_unlock(&local->iflist_mtx); |
e0cb686f | 1963 | |
04ecd257 | 1964 | ieee80211_recalc_smps(sdata); |
ab095877 EP |
1965 | ieee80211_recalc_ps_vif(sdata); |
1966 | ||
9ac19a90 | 1967 | netif_carrier_on(sdata->dev); |
f0706e82 JB |
1968 | } |
1969 | ||
e69e95db | 1970 | static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata, |
37ad3888 JB |
1971 | u16 stype, u16 reason, bool tx, |
1972 | u8 *frame_buf) | |
aa458d17 | 1973 | { |
46900298 | 1974 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
aa458d17 | 1975 | struct ieee80211_local *local = sdata->local; |
3cc5240b | 1976 | u32 changed = 0; |
aa458d17 | 1977 | |
8d61ffa5 | 1978 | sdata_assert_lock(sdata); |
77fdaa12 | 1979 | |
37ad3888 JB |
1980 | if (WARN_ON_ONCE(tx && !frame_buf)) |
1981 | return; | |
1982 | ||
b291ba11 JB |
1983 | if (WARN_ON(!ifmgd->associated)) |
1984 | return; | |
1985 | ||
79543d8e DS |
1986 | ieee80211_stop_poll(sdata); |
1987 | ||
77fdaa12 | 1988 | ifmgd->associated = NULL; |
aa458d17 TW |
1989 | netif_carrier_off(sdata->dev); |
1990 | ||
88bc40e8 EP |
1991 | /* |
1992 | * if we want to get out of ps before disassoc (why?) we have | |
1993 | * to do it before sending disassoc, as otherwise the null-packet | |
1994 | * won't be valid. | |
1995 | */ | |
1996 | if (local->hw.conf.flags & IEEE80211_CONF_PS) { | |
1997 | local->hw.conf.flags &= ~IEEE80211_CONF_PS; | |
1998 | ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); | |
1999 | } | |
2000 | local->ps_sdata = NULL; | |
2001 | ||
ab095877 EP |
2002 | /* disable per-vif ps */ |
2003 | ieee80211_recalc_ps_vif(sdata); | |
2004 | ||
14f2ae83 EG |
2005 | /* make sure ongoing transmission finishes */ |
2006 | synchronize_net(); | |
2007 | ||
3b24f4c6 EG |
2008 | /* |
2009 | * drop any frame before deauth/disassoc, this can be data or | |
2010 | * management frame. Since we are disconnecting, we should not | |
2011 | * insist sending these frames which can take time and delay | |
2012 | * the disconnection and possible the roaming. | |
2013 | */ | |
f823981e | 2014 | if (tx) |
3b24f4c6 | 2015 | ieee80211_flush_queues(local, sdata, true); |
f823981e | 2016 | |
37ad3888 JB |
2017 | /* deauthenticate/disassociate now */ |
2018 | if (tx || frame_buf) | |
88a9e31c EP |
2019 | ieee80211_send_deauth_disassoc(sdata, ifmgd->bssid, stype, |
2020 | reason, tx, frame_buf); | |
37ad3888 | 2021 | |
3b24f4c6 | 2022 | /* flush out frame - make sure the deauth was actually sent */ |
37ad3888 | 2023 | if (tx) |
3b24f4c6 | 2024 | ieee80211_flush_queues(local, sdata, false); |
37ad3888 | 2025 | |
88a9e31c | 2026 | /* clear bssid only after building the needed mgmt frames */ |
c84a67a2 | 2027 | eth_zero_addr(ifmgd->bssid); |
88a9e31c | 2028 | |
37ad3888 | 2029 | /* remove AP and TDLS peers */ |
d34ba216 | 2030 | sta_info_flush(sdata); |
37ad3888 JB |
2031 | |
2032 | /* finally reset all BSS / config parameters */ | |
f5e5bf25 TW |
2033 | changed |= ieee80211_reset_erp_info(sdata); |
2034 | ||
f5e5bf25 | 2035 | ieee80211_led_assoc(local, 0); |
ae5eb026 JB |
2036 | changed |= BSS_CHANGED_ASSOC; |
2037 | sdata->vif.bss_conf.assoc = false; | |
f5e5bf25 | 2038 | |
67baf663 JD |
2039 | ifmgd->p2p_noa_index = -1; |
2040 | memset(&sdata->vif.bss_conf.p2p_noa_attr, 0, | |
2041 | sizeof(sdata->vif.bss_conf.p2p_noa_attr)); | |
488dd7b5 | 2042 | |
dd5ecfea | 2043 | /* on the next assoc, re-program HT/VHT parameters */ |
ef96a842 BG |
2044 | memset(&ifmgd->ht_capa, 0, sizeof(ifmgd->ht_capa)); |
2045 | memset(&ifmgd->ht_capa_mask, 0, sizeof(ifmgd->ht_capa_mask)); | |
dd5ecfea JB |
2046 | memset(&ifmgd->vht_capa, 0, sizeof(ifmgd->vht_capa)); |
2047 | memset(&ifmgd->vht_capa_mask, 0, sizeof(ifmgd->vht_capa_mask)); | |
23a1f8d4 SS |
2048 | |
2049 | /* reset MU-MIMO ownership and group data */ | |
2050 | memset(sdata->vif.bss_conf.mu_group.membership, 0, | |
2051 | sizeof(sdata->vif.bss_conf.mu_group.membership)); | |
2052 | memset(sdata->vif.bss_conf.mu_group.position, 0, | |
2053 | sizeof(sdata->vif.bss_conf.mu_group.position)); | |
2054 | changed |= BSS_CHANGED_MU_GROUPS; | |
322cd406 | 2055 | sdata->flags &= ~IEEE80211_SDATA_MU_MIMO_OWNER; |
413ad50a | 2056 | |
1ea6f9c0 | 2057 | sdata->ap_power_level = IEEE80211_UNSET_POWER_LEVEL; |
a8302de9 | 2058 | |
520eb820 KV |
2059 | del_timer_sync(&local->dynamic_ps_timer); |
2060 | cancel_work_sync(&local->dynamic_ps_enable_work); | |
2061 | ||
68542962 | 2062 | /* Disable ARP filtering */ |
0f19b41e | 2063 | if (sdata->vif.bss_conf.arp_addr_cnt) |
68542962 | 2064 | changed |= BSS_CHANGED_ARP_FILTER; |
68542962 | 2065 | |
3abead59 JB |
2066 | sdata->vif.bss_conf.qos = false; |
2067 | changed |= BSS_CHANGED_QOS; | |
2068 | ||
0aaffa9b JB |
2069 | /* The BSSID (not really interesting) and HT changed */ |
2070 | changed |= BSS_CHANGED_BSSID | BSS_CHANGED_HT; | |
ae5eb026 | 2071 | ieee80211_bss_info_change_notify(sdata, changed); |
8e268e47 | 2072 | |
3abead59 | 2073 | /* disassociated - set to defaults now */ |
cec66283 | 2074 | ieee80211_set_wmm_default(sdata, false, false); |
3abead59 | 2075 | |
b9dcf712 JB |
2076 | del_timer_sync(&sdata->u.mgd.conn_mon_timer); |
2077 | del_timer_sync(&sdata->u.mgd.bcn_mon_timer); | |
2078 | del_timer_sync(&sdata->u.mgd.timer); | |
2079 | del_timer_sync(&sdata->u.mgd.chswitch_timer); | |
2d9957cc | 2080 | |
826262c3 | 2081 | sdata->vif.bss_conf.dtim_period = 0; |
817cee76 AB |
2082 | sdata->vif.bss_conf.beacon_rate = NULL; |
2083 | ||
989c6505 | 2084 | ifmgd->have_beacon = false; |
826262c3 | 2085 | |
028e8da0 | 2086 | ifmgd->flags = 0; |
34a3740d | 2087 | mutex_lock(&local->mtx); |
028e8da0 | 2088 | ieee80211_vif_release_channel(sdata); |
59af6928 MK |
2089 | |
2090 | sdata->vif.csa_active = false; | |
0c21e632 | 2091 | ifmgd->csa_waiting_bcn = false; |
f84eaa10 | 2092 | ifmgd->csa_ignored_same_chan = false; |
a46992b4 LC |
2093 | if (sdata->csa_block_tx) { |
2094 | ieee80211_wake_vif_queues(local, sdata, | |
2095 | IEEE80211_QUEUE_STOP_REASON_CSA); | |
2096 | sdata->csa_block_tx = false; | |
2097 | } | |
34a3740d | 2098 | mutex_unlock(&local->mtx); |
2475b1cc | 2099 | |
02219b3a JB |
2100 | /* existing TX TSPEC sessions no longer exist */ |
2101 | memset(ifmgd->tx_tspec, 0, sizeof(ifmgd->tx_tspec)); | |
2102 | cancel_delayed_work_sync(&ifmgd->tx_tspec_wk); | |
2103 | ||
2475b1cc | 2104 | sdata->encrypt_headroom = IEEE80211_ENCRYPT_HEADROOM; |
aa458d17 | 2105 | } |
f0706e82 | 2106 | |
3cf335d5 KV |
2107 | void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata, |
2108 | struct ieee80211_hdr *hdr) | |
2109 | { | |
2110 | /* | |
2111 | * We can postpone the mgd.timer whenever receiving unicast frames | |
2112 | * from AP because we know that the connection is working both ways | |
2113 | * at that time. But multicast frames (and hence also beacons) must | |
2114 | * be ignored here, because we need to trigger the timer during | |
b291ba11 JB |
2115 | * data idle periods for sending the periodic probe request to the |
2116 | * AP we're connected to. | |
3cf335d5 | 2117 | */ |
b291ba11 JB |
2118 | if (is_multicast_ether_addr(hdr->addr1)) |
2119 | return; | |
2120 | ||
be099e82 | 2121 | ieee80211_sta_reset_conn_monitor(sdata); |
3cf335d5 | 2122 | } |
f0706e82 | 2123 | |
4e5ff376 FF |
2124 | static void ieee80211_reset_ap_probe(struct ieee80211_sub_if_data *sdata) |
2125 | { | |
2126 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
133d40f9 | 2127 | struct ieee80211_local *local = sdata->local; |
4e5ff376 | 2128 | |
133d40f9 | 2129 | mutex_lock(&local->mtx); |
392b9ffb SG |
2130 | if (!(ifmgd->flags & IEEE80211_STA_CONNECTION_POLL)) |
2131 | goto out; | |
4e5ff376 | 2132 | |
925e64c3 | 2133 | __ieee80211_stop_poll(sdata); |
133d40f9 SG |
2134 | |
2135 | mutex_lock(&local->iflist_mtx); | |
4a733ef1 | 2136 | ieee80211_recalc_ps(local); |
133d40f9 | 2137 | mutex_unlock(&local->iflist_mtx); |
4e5ff376 | 2138 | |
30686bf7 | 2139 | if (ieee80211_hw_check(&sdata->local->hw, CONNECTION_MONITOR)) |
133d40f9 | 2140 | goto out; |
4e5ff376 FF |
2141 | |
2142 | /* | |
2143 | * We've received a probe response, but are not sure whether | |
2144 | * we have or will be receiving any beacons or data, so let's | |
2145 | * schedule the timers again, just in case. | |
2146 | */ | |
2147 | ieee80211_sta_reset_beacon_monitor(sdata); | |
2148 | ||
2149 | mod_timer(&ifmgd->conn_mon_timer, | |
2150 | round_jiffies_up(jiffies + | |
2151 | IEEE80211_CONNECTION_IDLE_TIME)); | |
133d40f9 | 2152 | out: |
133d40f9 | 2153 | mutex_unlock(&local->mtx); |
4e5ff376 FF |
2154 | } |
2155 | ||
02219b3a JB |
2156 | static void ieee80211_sta_tx_wmm_ac_notify(struct ieee80211_sub_if_data *sdata, |
2157 | struct ieee80211_hdr *hdr, | |
2158 | u16 tx_time) | |
2159 | { | |
2160 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
2161 | u16 tid = *ieee80211_get_qos_ctl(hdr) & IEEE80211_QOS_CTL_TID_MASK; | |
2162 | int ac = ieee80211_ac_from_tid(tid); | |
2163 | struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac]; | |
2164 | unsigned long now = jiffies; | |
2165 | ||
2166 | if (likely(!tx_tspec->admitted_time)) | |
2167 | return; | |
2168 | ||
2169 | if (time_after(now, tx_tspec->time_slice_start + HZ)) { | |
2170 | tx_tspec->consumed_tx_time = 0; | |
2171 | tx_tspec->time_slice_start = now; | |
2172 | ||
2173 | if (tx_tspec->downgraded) { | |
2174 | tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE; | |
2175 | schedule_delayed_work(&ifmgd->tx_tspec_wk, 0); | |
2176 | } | |
2177 | } | |
2178 | ||
2179 | if (tx_tspec->downgraded) | |
2180 | return; | |
2181 | ||
2182 | tx_tspec->consumed_tx_time += tx_time; | |
2183 | ||
2184 | if (tx_tspec->consumed_tx_time >= tx_tspec->admitted_time) { | |
2185 | tx_tspec->downgraded = true; | |
2186 | tx_tspec->action = TX_TSPEC_ACTION_DOWNGRADE; | |
2187 | schedule_delayed_work(&ifmgd->tx_tspec_wk, 0); | |
2188 | } | |
2189 | } | |
2190 | ||
4e5ff376 | 2191 | void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata, |
02219b3a | 2192 | struct ieee80211_hdr *hdr, bool ack, u16 tx_time) |
4e5ff376 | 2193 | { |
02219b3a JB |
2194 | ieee80211_sta_tx_wmm_ac_notify(sdata, hdr, tx_time); |
2195 | ||
75706d0e | 2196 | if (!ieee80211_is_data(hdr->frame_control)) |
4e5ff376 FF |
2197 | return; |
2198 | ||
4e5ff376 FF |
2199 | if (ieee80211_is_nullfunc(hdr->frame_control) && |
2200 | sdata->u.mgd.probe_send_count > 0) { | |
04ac3c0e | 2201 | if (ack) |
cab1c7fd | 2202 | ieee80211_sta_reset_conn_monitor(sdata); |
04ac3c0e FF |
2203 | else |
2204 | sdata->u.mgd.nullfunc_failed = true; | |
4e5ff376 | 2205 | ieee80211_queue_work(&sdata->local->hw, &sdata->work); |
cab1c7fd | 2206 | return; |
4e5ff376 | 2207 | } |
cab1c7fd WD |
2208 | |
2209 | if (ack) | |
2210 | ieee80211_sta_reset_conn_monitor(sdata); | |
4e5ff376 FF |
2211 | } |
2212 | ||
a43abf29 ML |
2213 | static void ieee80211_mgd_probe_ap_send(struct ieee80211_sub_if_data *sdata) |
2214 | { | |
2215 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
2216 | const u8 *ssid; | |
f01a067d | 2217 | u8 *dst = ifmgd->associated->bssid; |
180205bd | 2218 | u8 unicast_limit = max(1, max_probe_tries - 3); |
f01a067d LR |
2219 | |
2220 | /* | |
2221 | * Try sending broadcast probe requests for the last three | |
2222 | * probe requests after the first ones failed since some | |
2223 | * buggy APs only support broadcast probe requests. | |
2224 | */ | |
2225 | if (ifmgd->probe_send_count >= unicast_limit) | |
2226 | dst = NULL; | |
a43abf29 | 2227 | |
4e5ff376 FF |
2228 | /* |
2229 | * When the hardware reports an accurate Tx ACK status, it's | |
2230 | * better to send a nullfunc frame instead of a probe request, | |
2231 | * as it will kick us off the AP quickly if we aren't associated | |
2232 | * anymore. The timeout will be reset if the frame is ACKed by | |
2233 | * the AP. | |
2234 | */ | |
992e68bf SD |
2235 | ifmgd->probe_send_count++; |
2236 | ||
30686bf7 | 2237 | if (ieee80211_hw_check(&sdata->local->hw, REPORTS_TX_ACK_STATUS)) { |
04ac3c0e | 2238 | ifmgd->nullfunc_failed = false; |
076cdcb1 | 2239 | ieee80211_send_nullfunc(sdata->local, sdata, false); |
04ac3c0e | 2240 | } else { |
88c868c4 SG |
2241 | int ssid_len; |
2242 | ||
9caf0364 | 2243 | rcu_read_lock(); |
4e5ff376 | 2244 | ssid = ieee80211_bss_get_ie(ifmgd->associated, WLAN_EID_SSID); |
88c868c4 SG |
2245 | if (WARN_ON_ONCE(ssid == NULL)) |
2246 | ssid_len = 0; | |
2247 | else | |
2248 | ssid_len = ssid[1]; | |
2249 | ||
a73f8e21 | 2250 | ieee80211_send_probe_req(sdata, sdata->vif.addr, dst, |
a344d677 | 2251 | ssid + 2, ssid_len, NULL, |
1672c0e3 | 2252 | 0, (u32) -1, true, 0, |
55de908a | 2253 | ifmgd->associated->channel, false); |
9caf0364 | 2254 | rcu_read_unlock(); |
4e5ff376 | 2255 | } |
a43abf29 | 2256 | |
180205bd | 2257 | ifmgd->probe_timeout = jiffies + msecs_to_jiffies(probe_wait_ms); |
8d61ffa5 | 2258 | run_again(sdata, ifmgd->probe_timeout); |
a43abf29 ML |
2259 | } |
2260 | ||
b291ba11 JB |
2261 | static void ieee80211_mgd_probe_ap(struct ieee80211_sub_if_data *sdata, |
2262 | bool beacon) | |
04de8381 | 2263 | { |
04de8381 | 2264 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
b291ba11 | 2265 | bool already = false; |
34bfc411 | 2266 | |
9607e6b6 | 2267 | if (!ieee80211_sdata_running(sdata)) |
0e2b6286 JB |
2268 | return; |
2269 | ||
8d61ffa5 | 2270 | sdata_lock(sdata); |
77fdaa12 JB |
2271 | |
2272 | if (!ifmgd->associated) | |
2273 | goto out; | |
2274 | ||
133d40f9 SG |
2275 | mutex_lock(&sdata->local->mtx); |
2276 | ||
2277 | if (sdata->local->tmp_channel || sdata->local->scanning) { | |
2278 | mutex_unlock(&sdata->local->mtx); | |
2279 | goto out; | |
2280 | } | |
2281 | ||
a13fbe54 | 2282 | if (beacon) { |
bdcbd8e0 | 2283 | mlme_dbg_ratelimited(sdata, |
59c1ec2b BG |
2284 | "detected beacon loss from AP (missed %d beacons) - probing\n", |
2285 | beacon_loss_count); | |
bdcbd8e0 | 2286 | |
98f03342 | 2287 | ieee80211_cqm_beacon_loss_notify(&sdata->vif, GFP_KERNEL); |
a13fbe54 | 2288 | } |
04de8381 | 2289 | |
b291ba11 JB |
2290 | /* |
2291 | * The driver/our work has already reported this event or the | |
2292 | * connection monitoring has kicked in and we have already sent | |
2293 | * a probe request. Or maybe the AP died and the driver keeps | |
2294 | * reporting until we disassociate... | |
2295 | * | |
2296 | * In either case we have to ignore the current call to this | |
2297 | * function (except for setting the correct probe reason bit) | |
2298 | * because otherwise we would reset the timer every time and | |
2299 | * never check whether we received a probe response! | |
2300 | */ | |
392b9ffb | 2301 | if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL) |
b291ba11 JB |
2302 | already = true; |
2303 | ||
12b5f34d EP |
2304 | ifmgd->flags |= IEEE80211_STA_CONNECTION_POLL; |
2305 | ||
133d40f9 SG |
2306 | mutex_unlock(&sdata->local->mtx); |
2307 | ||
b291ba11 JB |
2308 | if (already) |
2309 | goto out; | |
2310 | ||
4e751843 | 2311 | mutex_lock(&sdata->local->iflist_mtx); |
4a733ef1 | 2312 | ieee80211_recalc_ps(sdata->local); |
4e751843 JB |
2313 | mutex_unlock(&sdata->local->iflist_mtx); |
2314 | ||
a43abf29 ML |
2315 | ifmgd->probe_send_count = 0; |
2316 | ieee80211_mgd_probe_ap_send(sdata); | |
77fdaa12 | 2317 | out: |
8d61ffa5 | 2318 | sdata_unlock(sdata); |
04de8381 KV |
2319 | } |
2320 | ||
a619a4c0 JO |
2321 | struct sk_buff *ieee80211_ap_probereq_get(struct ieee80211_hw *hw, |
2322 | struct ieee80211_vif *vif) | |
2323 | { | |
2324 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
2325 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
d9b3b28b | 2326 | struct cfg80211_bss *cbss; |
a619a4c0 JO |
2327 | struct sk_buff *skb; |
2328 | const u8 *ssid; | |
88c868c4 | 2329 | int ssid_len; |
a619a4c0 JO |
2330 | |
2331 | if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION)) | |
2332 | return NULL; | |
2333 | ||
8d61ffa5 | 2334 | sdata_assert_lock(sdata); |
a619a4c0 | 2335 | |
d9b3b28b EP |
2336 | if (ifmgd->associated) |
2337 | cbss = ifmgd->associated; | |
2338 | else if (ifmgd->auth_data) | |
2339 | cbss = ifmgd->auth_data->bss; | |
2340 | else if (ifmgd->assoc_data) | |
2341 | cbss = ifmgd->assoc_data->bss; | |
2342 | else | |
a619a4c0 JO |
2343 | return NULL; |
2344 | ||
9caf0364 | 2345 | rcu_read_lock(); |
d9b3b28b | 2346 | ssid = ieee80211_bss_get_ie(cbss, WLAN_EID_SSID); |
88c868c4 SG |
2347 | if (WARN_ON_ONCE(ssid == NULL)) |
2348 | ssid_len = 0; | |
2349 | else | |
2350 | ssid_len = ssid[1]; | |
2351 | ||
a344d677 | 2352 | skb = ieee80211_build_probe_req(sdata, sdata->vif.addr, cbss->bssid, |
55de908a | 2353 | (u32) -1, cbss->channel, |
6b77863b | 2354 | ssid + 2, ssid_len, |
85a237fe | 2355 | NULL, 0, true); |
9caf0364 | 2356 | rcu_read_unlock(); |
a619a4c0 JO |
2357 | |
2358 | return skb; | |
2359 | } | |
2360 | EXPORT_SYMBOL(ieee80211_ap_probereq_get); | |
2361 | ||
a90faa9d EG |
2362 | static void ieee80211_report_disconnect(struct ieee80211_sub_if_data *sdata, |
2363 | const u8 *buf, size_t len, bool tx, | |
2364 | u16 reason) | |
2365 | { | |
2366 | struct ieee80211_event event = { | |
2367 | .type = MLME_EVENT, | |
2368 | .u.mlme.data = tx ? DEAUTH_TX_EVENT : DEAUTH_RX_EVENT, | |
2369 | .u.mlme.reason = reason, | |
2370 | }; | |
2371 | ||
2372 | if (tx) | |
2373 | cfg80211_tx_mlme_mgmt(sdata->dev, buf, len); | |
2374 | else | |
2375 | cfg80211_rx_mlme_mgmt(sdata->dev, buf, len); | |
2376 | ||
2377 | drv_event_callback(sdata->local, sdata, &event); | |
2378 | } | |
2379 | ||
eef9e54c | 2380 | static void __ieee80211_disconnect(struct ieee80211_sub_if_data *sdata) |
1e4dcd01 | 2381 | { |
59af6928 | 2382 | struct ieee80211_local *local = sdata->local; |
1e4dcd01 | 2383 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
6ae16775 | 2384 | u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN]; |
1e4dcd01 | 2385 | |
8d61ffa5 | 2386 | sdata_lock(sdata); |
1e4dcd01 | 2387 | if (!ifmgd->associated) { |
8d61ffa5 | 2388 | sdata_unlock(sdata); |
1e4dcd01 JO |
2389 | return; |
2390 | } | |
2391 | ||
37ad3888 JB |
2392 | ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, |
2393 | WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, | |
eef9e54c | 2394 | true, frame_buf); |
59af6928 | 2395 | mutex_lock(&local->mtx); |
7578d575 | 2396 | sdata->vif.csa_active = false; |
0c21e632 | 2397 | ifmgd->csa_waiting_bcn = false; |
a46992b4 LC |
2398 | if (sdata->csa_block_tx) { |
2399 | ieee80211_wake_vif_queues(local, sdata, | |
2400 | IEEE80211_QUEUE_STOP_REASON_CSA); | |
2401 | sdata->csa_block_tx = false; | |
2402 | } | |
59af6928 | 2403 | mutex_unlock(&local->mtx); |
7da7cc1d | 2404 | |
a90faa9d EG |
2405 | ieee80211_report_disconnect(sdata, frame_buf, sizeof(frame_buf), true, |
2406 | WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY); | |
2407 | ||
8d61ffa5 | 2408 | sdata_unlock(sdata); |
1e4dcd01 JO |
2409 | } |
2410 | ||
cc74c0c7 | 2411 | static void ieee80211_beacon_connection_loss_work(struct work_struct *work) |
b291ba11 JB |
2412 | { |
2413 | struct ieee80211_sub_if_data *sdata = | |
2414 | container_of(work, struct ieee80211_sub_if_data, | |
1e4dcd01 | 2415 | u.mgd.beacon_connection_loss_work); |
a85e1d55 | 2416 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
a85e1d55 | 2417 | |
976bd9ef JB |
2418 | if (ifmgd->associated) |
2419 | ifmgd->beacon_loss_count++; | |
b291ba11 | 2420 | |
682bd38b | 2421 | if (ifmgd->connection_loss) { |
882a7c69 JB |
2422 | sdata_info(sdata, "Connection to AP %pM lost\n", |
2423 | ifmgd->bssid); | |
eef9e54c | 2424 | __ieee80211_disconnect(sdata); |
882a7c69 | 2425 | } else { |
1e4dcd01 | 2426 | ieee80211_mgd_probe_ap(sdata, true); |
882a7c69 JB |
2427 | } |
2428 | } | |
2429 | ||
2430 | static void ieee80211_csa_connection_drop_work(struct work_struct *work) | |
2431 | { | |
2432 | struct ieee80211_sub_if_data *sdata = | |
2433 | container_of(work, struct ieee80211_sub_if_data, | |
2434 | u.mgd.csa_connection_drop_work); | |
2435 | ||
eef9e54c | 2436 | __ieee80211_disconnect(sdata); |
b291ba11 JB |
2437 | } |
2438 | ||
04de8381 KV |
2439 | void ieee80211_beacon_loss(struct ieee80211_vif *vif) |
2440 | { | |
2441 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
1e4dcd01 | 2442 | struct ieee80211_hw *hw = &sdata->local->hw; |
04de8381 | 2443 | |
b5878a2d JB |
2444 | trace_api_beacon_loss(sdata); |
2445 | ||
682bd38b | 2446 | sdata->u.mgd.connection_loss = false; |
1e4dcd01 | 2447 | ieee80211_queue_work(hw, &sdata->u.mgd.beacon_connection_loss_work); |
04de8381 KV |
2448 | } |
2449 | EXPORT_SYMBOL(ieee80211_beacon_loss); | |
2450 | ||
1e4dcd01 JO |
2451 | void ieee80211_connection_loss(struct ieee80211_vif *vif) |
2452 | { | |
2453 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
2454 | struct ieee80211_hw *hw = &sdata->local->hw; | |
2455 | ||
b5878a2d JB |
2456 | trace_api_connection_loss(sdata); |
2457 | ||
682bd38b | 2458 | sdata->u.mgd.connection_loss = true; |
1e4dcd01 JO |
2459 | ieee80211_queue_work(hw, &sdata->u.mgd.beacon_connection_loss_work); |
2460 | } | |
2461 | EXPORT_SYMBOL(ieee80211_connection_loss); | |
2462 | ||
2463 | ||
66e67e41 JB |
2464 | static void ieee80211_destroy_auth_data(struct ieee80211_sub_if_data *sdata, |
2465 | bool assoc) | |
2466 | { | |
2467 | struct ieee80211_mgd_auth_data *auth_data = sdata->u.mgd.auth_data; | |
2468 | ||
8d61ffa5 | 2469 | sdata_assert_lock(sdata); |
66e67e41 | 2470 | |
66e67e41 | 2471 | if (!assoc) { |
c1e140bf EG |
2472 | /* |
2473 | * we are not authenticated yet, the only timer that could be | |
2474 | * running is the timeout for the authentication response which | |
2475 | * which is not relevant anymore. | |
2476 | */ | |
2477 | del_timer_sync(&sdata->u.mgd.timer); | |
66e67e41 JB |
2478 | sta_info_destroy_addr(sdata, auth_data->bss->bssid); |
2479 | ||
c84a67a2 | 2480 | eth_zero_addr(sdata->u.mgd.bssid); |
66e67e41 | 2481 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID); |
028e8da0 | 2482 | sdata->u.mgd.flags = 0; |
34a3740d | 2483 | mutex_lock(&sdata->local->mtx); |
55de908a | 2484 | ieee80211_vif_release_channel(sdata); |
34a3740d | 2485 | mutex_unlock(&sdata->local->mtx); |
66e67e41 JB |
2486 | } |
2487 | ||
5b112d3d | 2488 | cfg80211_put_bss(sdata->local->hw.wiphy, auth_data->bss); |
66e67e41 JB |
2489 | kfree(auth_data); |
2490 | sdata->u.mgd.auth_data = NULL; | |
2491 | } | |
2492 | ||
c9c99f89 JB |
2493 | static void ieee80211_destroy_assoc_data(struct ieee80211_sub_if_data *sdata, |
2494 | bool assoc) | |
2495 | { | |
2496 | struct ieee80211_mgd_assoc_data *assoc_data = sdata->u.mgd.assoc_data; | |
2497 | ||
2498 | sdata_assert_lock(sdata); | |
2499 | ||
2500 | if (!assoc) { | |
2501 | /* | |
2502 | * we are not associated yet, the only timer that could be | |
2503 | * running is the timeout for the association response which | |
2504 | * which is not relevant anymore. | |
2505 | */ | |
2506 | del_timer_sync(&sdata->u.mgd.timer); | |
2507 | sta_info_destroy_addr(sdata, assoc_data->bss->bssid); | |
2508 | ||
2509 | eth_zero_addr(sdata->u.mgd.bssid); | |
2510 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID); | |
2511 | sdata->u.mgd.flags = 0; | |
322cd406 | 2512 | sdata->flags &= ~IEEE80211_SDATA_MU_MIMO_OWNER; |
c9c99f89 JB |
2513 | mutex_lock(&sdata->local->mtx); |
2514 | ieee80211_vif_release_channel(sdata); | |
2515 | mutex_unlock(&sdata->local->mtx); | |
2516 | } | |
2517 | ||
2518 | kfree(assoc_data); | |
2519 | sdata->u.mgd.assoc_data = NULL; | |
2520 | } | |
2521 | ||
66e67e41 JB |
2522 | static void ieee80211_auth_challenge(struct ieee80211_sub_if_data *sdata, |
2523 | struct ieee80211_mgmt *mgmt, size_t len) | |
2524 | { | |
1672c0e3 | 2525 | struct ieee80211_local *local = sdata->local; |
66e67e41 JB |
2526 | struct ieee80211_mgd_auth_data *auth_data = sdata->u.mgd.auth_data; |
2527 | u8 *pos; | |
2528 | struct ieee802_11_elems elems; | |
1672c0e3 | 2529 | u32 tx_flags = 0; |
66e67e41 JB |
2530 | |
2531 | pos = mgmt->u.auth.variable; | |
b2e506bf | 2532 | ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), false, &elems); |
66e67e41 JB |
2533 | if (!elems.challenge) |
2534 | return; | |
2535 | auth_data->expected_transaction = 4; | |
a1845fc7 | 2536 | drv_mgd_prepare_tx(sdata->local, sdata); |
30686bf7 | 2537 | if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) |
1672c0e3 JB |
2538 | tx_flags = IEEE80211_TX_CTL_REQ_TX_STATUS | |
2539 | IEEE80211_TX_INTFL_MLME_CONN_TX; | |
700e8ea6 | 2540 | ieee80211_send_auth(sdata, 3, auth_data->algorithm, 0, |
66e67e41 JB |
2541 | elems.challenge - 2, elems.challenge_len + 2, |
2542 | auth_data->bss->bssid, auth_data->bss->bssid, | |
2543 | auth_data->key, auth_data->key_len, | |
1672c0e3 | 2544 | auth_data->key_idx, tx_flags); |
66e67e41 JB |
2545 | } |
2546 | ||
8d61ffa5 JB |
2547 | static void ieee80211_rx_mgmt_auth(struct ieee80211_sub_if_data *sdata, |
2548 | struct ieee80211_mgmt *mgmt, size_t len) | |
66e67e41 JB |
2549 | { |
2550 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
2551 | u8 bssid[ETH_ALEN]; | |
2552 | u16 auth_alg, auth_transaction, status_code; | |
2553 | struct sta_info *sta; | |
a9409093 EG |
2554 | struct ieee80211_event event = { |
2555 | .type = MLME_EVENT, | |
2556 | .u.mlme.data = AUTH_EVENT, | |
2557 | }; | |
66e67e41 | 2558 | |
8d61ffa5 | 2559 | sdata_assert_lock(sdata); |
66e67e41 JB |
2560 | |
2561 | if (len < 24 + 6) | |
8d61ffa5 | 2562 | return; |
66e67e41 JB |
2563 | |
2564 | if (!ifmgd->auth_data || ifmgd->auth_data->done) | |
8d61ffa5 | 2565 | return; |
66e67e41 JB |
2566 | |
2567 | memcpy(bssid, ifmgd->auth_data->bss->bssid, ETH_ALEN); | |
2568 | ||
b203ca39 | 2569 | if (!ether_addr_equal(bssid, mgmt->bssid)) |
8d61ffa5 | 2570 | return; |
66e67e41 JB |
2571 | |
2572 | auth_alg = le16_to_cpu(mgmt->u.auth.auth_alg); | |
2573 | auth_transaction = le16_to_cpu(mgmt->u.auth.auth_transaction); | |
2574 | status_code = le16_to_cpu(mgmt->u.auth.status_code); | |
2575 | ||
2576 | if (auth_alg != ifmgd->auth_data->algorithm || | |
0f4126e8 JM |
2577 | auth_transaction != ifmgd->auth_data->expected_transaction) { |
2578 | sdata_info(sdata, "%pM unexpected authentication state: alg %d (expected %d) transact %d (expected %d)\n", | |
2579 | mgmt->sa, auth_alg, ifmgd->auth_data->algorithm, | |
2580 | auth_transaction, | |
2581 | ifmgd->auth_data->expected_transaction); | |
8d61ffa5 | 2582 | return; |
0f4126e8 | 2583 | } |
66e67e41 JB |
2584 | |
2585 | if (status_code != WLAN_STATUS_SUCCESS) { | |
bdcbd8e0 JB |
2586 | sdata_info(sdata, "%pM denied authentication (status %d)\n", |
2587 | mgmt->sa, status_code); | |
dac211ec | 2588 | ieee80211_destroy_auth_data(sdata, false); |
6ff57cf8 | 2589 | cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len); |
a9409093 EG |
2590 | event.u.mlme.status = MLME_DENIED; |
2591 | event.u.mlme.reason = status_code; | |
2592 | drv_event_callback(sdata->local, sdata, &event); | |
8d61ffa5 | 2593 | return; |
66e67e41 JB |
2594 | } |
2595 | ||
2596 | switch (ifmgd->auth_data->algorithm) { | |
2597 | case WLAN_AUTH_OPEN: | |
2598 | case WLAN_AUTH_LEAP: | |
2599 | case WLAN_AUTH_FT: | |
6b8ece3a | 2600 | case WLAN_AUTH_SAE: |
66e67e41 JB |
2601 | break; |
2602 | case WLAN_AUTH_SHARED_KEY: | |
2603 | if (ifmgd->auth_data->expected_transaction != 4) { | |
2604 | ieee80211_auth_challenge(sdata, mgmt, len); | |
2605 | /* need another frame */ | |
8d61ffa5 | 2606 | return; |
66e67e41 JB |
2607 | } |
2608 | break; | |
2609 | default: | |
2610 | WARN_ONCE(1, "invalid auth alg %d", | |
2611 | ifmgd->auth_data->algorithm); | |
8d61ffa5 | 2612 | return; |
66e67e41 JB |
2613 | } |
2614 | ||
a9409093 EG |
2615 | event.u.mlme.status = MLME_SUCCESS; |
2616 | drv_event_callback(sdata->local, sdata, &event); | |
bdcbd8e0 | 2617 | sdata_info(sdata, "authenticated\n"); |
66e67e41 JB |
2618 | ifmgd->auth_data->done = true; |
2619 | ifmgd->auth_data->timeout = jiffies + IEEE80211_AUTH_WAIT_ASSOC; | |
89afe614 | 2620 | ifmgd->auth_data->timeout_started = true; |
8d61ffa5 | 2621 | run_again(sdata, ifmgd->auth_data->timeout); |
66e67e41 | 2622 | |
6b8ece3a JM |
2623 | if (ifmgd->auth_data->algorithm == WLAN_AUTH_SAE && |
2624 | ifmgd->auth_data->expected_transaction != 2) { | |
2625 | /* | |
2626 | * Report auth frame to user space for processing since another | |
2627 | * round of Authentication frames is still needed. | |
2628 | */ | |
6ff57cf8 | 2629 | cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len); |
8d61ffa5 | 2630 | return; |
6b8ece3a JM |
2631 | } |
2632 | ||
66e67e41 JB |
2633 | /* move station state to auth */ |
2634 | mutex_lock(&sdata->local->sta_mtx); | |
2635 | sta = sta_info_get(sdata, bssid); | |
2636 | if (!sta) { | |
2637 | WARN_ONCE(1, "%s: STA %pM not found", sdata->name, bssid); | |
2638 | goto out_err; | |
2639 | } | |
2640 | if (sta_info_move_state(sta, IEEE80211_STA_AUTH)) { | |
bdcbd8e0 | 2641 | sdata_info(sdata, "failed moving %pM to auth\n", bssid); |
66e67e41 JB |
2642 | goto out_err; |
2643 | } | |
2644 | mutex_unlock(&sdata->local->sta_mtx); | |
2645 | ||
6ff57cf8 | 2646 | cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len); |
8d61ffa5 | 2647 | return; |
66e67e41 JB |
2648 | out_err: |
2649 | mutex_unlock(&sdata->local->sta_mtx); | |
2650 | /* ignore frame -- wait for timeout */ | |
66e67e41 JB |
2651 | } |
2652 | ||
dfa1ad29 CO |
2653 | #define case_WLAN(type) \ |
2654 | case WLAN_REASON_##type: return #type | |
2655 | ||
2656 | static const char *ieee80211_get_reason_code_string(u16 reason_code) | |
2657 | { | |
2658 | switch (reason_code) { | |
2659 | case_WLAN(UNSPECIFIED); | |
2660 | case_WLAN(PREV_AUTH_NOT_VALID); | |
2661 | case_WLAN(DEAUTH_LEAVING); | |
2662 | case_WLAN(DISASSOC_DUE_TO_INACTIVITY); | |
2663 | case_WLAN(DISASSOC_AP_BUSY); | |
2664 | case_WLAN(CLASS2_FRAME_FROM_NONAUTH_STA); | |
2665 | case_WLAN(CLASS3_FRAME_FROM_NONASSOC_STA); | |
2666 | case_WLAN(DISASSOC_STA_HAS_LEFT); | |
2667 | case_WLAN(STA_REQ_ASSOC_WITHOUT_AUTH); | |
2668 | case_WLAN(DISASSOC_BAD_POWER); | |
2669 | case_WLAN(DISASSOC_BAD_SUPP_CHAN); | |
2670 | case_WLAN(INVALID_IE); | |
2671 | case_WLAN(MIC_FAILURE); | |
2672 | case_WLAN(4WAY_HANDSHAKE_TIMEOUT); | |
2673 | case_WLAN(GROUP_KEY_HANDSHAKE_TIMEOUT); | |
2674 | case_WLAN(IE_DIFFERENT); | |
2675 | case_WLAN(INVALID_GROUP_CIPHER); | |
2676 | case_WLAN(INVALID_PAIRWISE_CIPHER); | |
2677 | case_WLAN(INVALID_AKMP); | |
2678 | case_WLAN(UNSUPP_RSN_VERSION); | |
2679 | case_WLAN(INVALID_RSN_IE_CAP); | |
2680 | case_WLAN(IEEE8021X_FAILED); | |
2681 | case_WLAN(CIPHER_SUITE_REJECTED); | |
2682 | case_WLAN(DISASSOC_UNSPECIFIED_QOS); | |
2683 | case_WLAN(DISASSOC_QAP_NO_BANDWIDTH); | |
2684 | case_WLAN(DISASSOC_LOW_ACK); | |
2685 | case_WLAN(DISASSOC_QAP_EXCEED_TXOP); | |
2686 | case_WLAN(QSTA_LEAVE_QBSS); | |
2687 | case_WLAN(QSTA_NOT_USE); | |
2688 | case_WLAN(QSTA_REQUIRE_SETUP); | |
2689 | case_WLAN(QSTA_TIMEOUT); | |
2690 | case_WLAN(QSTA_CIPHER_NOT_SUPP); | |
2691 | case_WLAN(MESH_PEER_CANCELED); | |
2692 | case_WLAN(MESH_MAX_PEERS); | |
2693 | case_WLAN(MESH_CONFIG); | |
2694 | case_WLAN(MESH_CLOSE); | |
2695 | case_WLAN(MESH_MAX_RETRIES); | |
2696 | case_WLAN(MESH_CONFIRM_TIMEOUT); | |
2697 | case_WLAN(MESH_INVALID_GTK); | |
2698 | case_WLAN(MESH_INCONSISTENT_PARAM); | |
2699 | case_WLAN(MESH_INVALID_SECURITY); | |
2700 | case_WLAN(MESH_PATH_ERROR); | |
2701 | case_WLAN(MESH_PATH_NOFORWARD); | |
2702 | case_WLAN(MESH_PATH_DEST_UNREACHABLE); | |
2703 | case_WLAN(MAC_EXISTS_IN_MBSS); | |
2704 | case_WLAN(MESH_CHAN_REGULATORY); | |
2705 | case_WLAN(MESH_CHAN); | |
2706 | default: return "<unknown>"; | |
2707 | } | |
2708 | } | |
66e67e41 | 2709 | |
8d61ffa5 JB |
2710 | static void ieee80211_rx_mgmt_deauth(struct ieee80211_sub_if_data *sdata, |
2711 | struct ieee80211_mgmt *mgmt, size_t len) | |
f0706e82 | 2712 | { |
46900298 | 2713 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
c9c99f89 | 2714 | u16 reason_code = le16_to_cpu(mgmt->u.deauth.reason_code); |
f0706e82 | 2715 | |
8d61ffa5 | 2716 | sdata_assert_lock(sdata); |
66e67e41 | 2717 | |
f4ea83dd | 2718 | if (len < 24 + 2) |
8d61ffa5 | 2719 | return; |
f0706e82 | 2720 | |
c9c99f89 JB |
2721 | if (ifmgd->associated && |
2722 | ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid)) { | |
2723 | const u8 *bssid = ifmgd->associated->bssid; | |
77fdaa12 | 2724 | |
c9c99f89 JB |
2725 | sdata_info(sdata, "deauthenticated from %pM (Reason: %u=%s)\n", |
2726 | bssid, reason_code, | |
2727 | ieee80211_get_reason_code_string(reason_code)); | |
f0706e82 | 2728 | |
c9c99f89 | 2729 | ieee80211_set_disassoc(sdata, 0, 0, false, NULL); |
f0706e82 | 2730 | |
c9c99f89 JB |
2731 | ieee80211_report_disconnect(sdata, (u8 *)mgmt, len, false, |
2732 | reason_code); | |
2733 | return; | |
2734 | } | |
77fdaa12 | 2735 | |
c9c99f89 JB |
2736 | if (ifmgd->assoc_data && |
2737 | ether_addr_equal(mgmt->bssid, ifmgd->assoc_data->bss->bssid)) { | |
2738 | const u8 *bssid = ifmgd->assoc_data->bss->bssid; | |
37ad3888 | 2739 | |
c9c99f89 JB |
2740 | sdata_info(sdata, |
2741 | "deauthenticated from %pM while associating (Reason: %u=%s)\n", | |
2742 | bssid, reason_code, | |
2743 | ieee80211_get_reason_code_string(reason_code)); | |
2744 | ||
2745 | ieee80211_destroy_assoc_data(sdata, false); | |
2746 | ||
2747 | cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len); | |
2748 | return; | |
2749 | } | |
f0706e82 JB |
2750 | } |
2751 | ||
2752 | ||
8d61ffa5 JB |
2753 | static void ieee80211_rx_mgmt_disassoc(struct ieee80211_sub_if_data *sdata, |
2754 | struct ieee80211_mgmt *mgmt, size_t len) | |
f0706e82 | 2755 | { |
46900298 | 2756 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
f0706e82 JB |
2757 | u16 reason_code; |
2758 | ||
8d61ffa5 | 2759 | sdata_assert_lock(sdata); |
77fdaa12 | 2760 | |
66e67e41 | 2761 | if (len < 24 + 2) |
8d61ffa5 | 2762 | return; |
77fdaa12 | 2763 | |
66e67e41 | 2764 | if (!ifmgd->associated || |
b203ca39 | 2765 | !ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid)) |
8d61ffa5 | 2766 | return; |
f0706e82 JB |
2767 | |
2768 | reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code); | |
2769 | ||
bdcbd8e0 JB |
2770 | sdata_info(sdata, "disassociated from %pM (Reason: %u)\n", |
2771 | mgmt->sa, reason_code); | |
f0706e82 | 2772 | |
37ad3888 JB |
2773 | ieee80211_set_disassoc(sdata, 0, 0, false, NULL); |
2774 | ||
a90faa9d | 2775 | ieee80211_report_disconnect(sdata, (u8 *)mgmt, len, false, reason_code); |
f0706e82 JB |
2776 | } |
2777 | ||
c74d084f CL |
2778 | static void ieee80211_get_rates(struct ieee80211_supported_band *sband, |
2779 | u8 *supp_rates, unsigned int supp_rates_len, | |
2780 | u32 *rates, u32 *basic_rates, | |
2781 | bool *have_higher_than_11mbit, | |
2103dec1 SW |
2782 | int *min_rate, int *min_rate_index, |
2783 | int shift, u32 rate_flags) | |
c74d084f CL |
2784 | { |
2785 | int i, j; | |
2786 | ||
2787 | for (i = 0; i < supp_rates_len; i++) { | |
2103dec1 | 2788 | int rate = supp_rates[i] & 0x7f; |
c74d084f CL |
2789 | bool is_basic = !!(supp_rates[i] & 0x80); |
2790 | ||
2103dec1 | 2791 | if ((rate * 5 * (1 << shift)) > 110) |
c74d084f CL |
2792 | *have_higher_than_11mbit = true; |
2793 | ||
2794 | /* | |
2795 | * BSS_MEMBERSHIP_SELECTOR_HT_PHY is defined in 802.11n-2009 | |
2796 | * 7.3.2.2 as a magic value instead of a rate. Hence, skip it. | |
2797 | * | |
2798 | * Note: Even through the membership selector and the basic | |
2799 | * rate flag share the same bit, they are not exactly | |
2800 | * the same. | |
2801 | */ | |
2802 | if (!!(supp_rates[i] & 0x80) && | |
2803 | (supp_rates[i] & 0x7f) == BSS_MEMBERSHIP_SELECTOR_HT_PHY) | |
2804 | continue; | |
2805 | ||
2806 | for (j = 0; j < sband->n_bitrates; j++) { | |
2103dec1 SW |
2807 | struct ieee80211_rate *br; |
2808 | int brate; | |
2809 | ||
2810 | br = &sband->bitrates[j]; | |
2811 | if ((rate_flags & br->flags) != rate_flags) | |
2812 | continue; | |
2813 | ||
2814 | brate = DIV_ROUND_UP(br->bitrate, (1 << shift) * 5); | |
2815 | if (brate == rate) { | |
c74d084f CL |
2816 | *rates |= BIT(j); |
2817 | if (is_basic) | |
2818 | *basic_rates |= BIT(j); | |
2103dec1 SW |
2819 | if ((rate * 5) < *min_rate) { |
2820 | *min_rate = rate * 5; | |
c74d084f CL |
2821 | *min_rate_index = j; |
2822 | } | |
2823 | break; | |
2824 | } | |
2825 | } | |
2826 | } | |
2827 | } | |
f0706e82 | 2828 | |
66e67e41 JB |
2829 | static bool ieee80211_assoc_success(struct ieee80211_sub_if_data *sdata, |
2830 | struct cfg80211_bss *cbss, | |
af6b6374 | 2831 | struct ieee80211_mgmt *mgmt, size_t len) |
f0706e82 | 2832 | { |
46900298 | 2833 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
471b3efd | 2834 | struct ieee80211_local *local = sdata->local; |
8318d78a | 2835 | struct ieee80211_supported_band *sband; |
f0706e82 | 2836 | struct sta_info *sta; |
af6b6374 | 2837 | u8 *pos; |
af6b6374 | 2838 | u16 capab_info, aid; |
f0706e82 | 2839 | struct ieee802_11_elems elems; |
bda3933a | 2840 | struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf; |
35d865af JB |
2841 | const struct cfg80211_bss_ies *bss_ies = NULL; |
2842 | struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data; | |
ae5eb026 | 2843 | u32 changed = 0; |
c74d084f | 2844 | int err; |
35d865af | 2845 | bool ret; |
f0706e82 | 2846 | |
af6b6374 | 2847 | /* AssocResp and ReassocResp have identical structure */ |
f0706e82 | 2848 | |
f0706e82 | 2849 | aid = le16_to_cpu(mgmt->u.assoc_resp.aid); |
af6b6374 | 2850 | capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info); |
f0706e82 | 2851 | |
1dd84aa2 | 2852 | if ((aid & (BIT(15) | BIT(14))) != (BIT(15) | BIT(14))) |
bdcbd8e0 JB |
2853 | sdata_info(sdata, "invalid AID value 0x%x; bits 15:14 not set\n", |
2854 | aid); | |
1dd84aa2 JB |
2855 | aid &= ~(BIT(15) | BIT(14)); |
2856 | ||
05cb9108 JB |
2857 | ifmgd->broken_ap = false; |
2858 | ||
2859 | if (aid == 0 || aid > IEEE80211_MAX_AID) { | |
bdcbd8e0 JB |
2860 | sdata_info(sdata, "invalid AID value %d (out of range), turn off PS\n", |
2861 | aid); | |
05cb9108 JB |
2862 | aid = 0; |
2863 | ifmgd->broken_ap = true; | |
2864 | } | |
2865 | ||
af6b6374 | 2866 | pos = mgmt->u.assoc_resp.variable; |
b2e506bf | 2867 | ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), false, &elems); |
af6b6374 | 2868 | |
f0706e82 | 2869 | if (!elems.supp_rates) { |
bdcbd8e0 | 2870 | sdata_info(sdata, "no SuppRates element in AssocResp\n"); |
af6b6374 | 2871 | return false; |
f0706e82 JB |
2872 | } |
2873 | ||
46900298 | 2874 | ifmgd->aid = aid; |
9041c1fa AN |
2875 | ifmgd->tdls_chan_switch_prohibited = |
2876 | elems.ext_capab && elems.ext_capab_len >= 5 && | |
2877 | (elems.ext_capab[4] & WLAN_EXT_CAPA5_TDLS_CH_SW_PROHIBITED); | |
f0706e82 | 2878 | |
35d865af JB |
2879 | /* |
2880 | * Some APs are erroneously not including some information in their | |
2881 | * (re)association response frames. Try to recover by using the data | |
2882 | * from the beacon or probe response. This seems to afflict mobile | |
2883 | * 2G/3G/4G wifi routers, reported models include the "Onda PN51T", | |
2884 | * "Vodafone PocketWiFi 2", "ZTE MF60" and a similar T-Mobile device. | |
2885 | */ | |
2886 | if ((assoc_data->wmm && !elems.wmm_param) || | |
2887 | (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT) && | |
2888 | (!elems.ht_cap_elem || !elems.ht_operation)) || | |
2889 | (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) && | |
2890 | (!elems.vht_cap_elem || !elems.vht_operation))) { | |
2891 | const struct cfg80211_bss_ies *ies; | |
2892 | struct ieee802_11_elems bss_elems; | |
2893 | ||
2894 | rcu_read_lock(); | |
2895 | ies = rcu_dereference(cbss->ies); | |
2896 | if (ies) | |
2897 | bss_ies = kmemdup(ies, sizeof(*ies) + ies->len, | |
2898 | GFP_ATOMIC); | |
2899 | rcu_read_unlock(); | |
2900 | if (!bss_ies) | |
2901 | return false; | |
2902 | ||
2903 | ieee802_11_parse_elems(bss_ies->data, bss_ies->len, | |
2904 | false, &bss_elems); | |
2905 | if (assoc_data->wmm && | |
2906 | !elems.wmm_param && bss_elems.wmm_param) { | |
2907 | elems.wmm_param = bss_elems.wmm_param; | |
2908 | sdata_info(sdata, | |
2909 | "AP bug: WMM param missing from AssocResp\n"); | |
2910 | } | |
2911 | ||
2912 | /* | |
2913 | * Also check if we requested HT/VHT, otherwise the AP doesn't | |
2914 | * have to include the IEs in the (re)association response. | |
2915 | */ | |
2916 | if (!elems.ht_cap_elem && bss_elems.ht_cap_elem && | |
2917 | !(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) { | |
2918 | elems.ht_cap_elem = bss_elems.ht_cap_elem; | |
2919 | sdata_info(sdata, | |
2920 | "AP bug: HT capability missing from AssocResp\n"); | |
2921 | } | |
2922 | if (!elems.ht_operation && bss_elems.ht_operation && | |
2923 | !(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) { | |
2924 | elems.ht_operation = bss_elems.ht_operation; | |
2925 | sdata_info(sdata, | |
2926 | "AP bug: HT operation missing from AssocResp\n"); | |
2927 | } | |
2928 | if (!elems.vht_cap_elem && bss_elems.vht_cap_elem && | |
2929 | !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) { | |
2930 | elems.vht_cap_elem = bss_elems.vht_cap_elem; | |
2931 | sdata_info(sdata, | |
2932 | "AP bug: VHT capa missing from AssocResp\n"); | |
2933 | } | |
2934 | if (!elems.vht_operation && bss_elems.vht_operation && | |
2935 | !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) { | |
2936 | elems.vht_operation = bss_elems.vht_operation; | |
2937 | sdata_info(sdata, | |
2938 | "AP bug: VHT operation missing from AssocResp\n"); | |
2939 | } | |
2940 | } | |
2941 | ||
30eb1dc2 JB |
2942 | /* |
2943 | * We previously checked these in the beacon/probe response, so | |
2944 | * they should be present here. This is just a safety net. | |
2945 | */ | |
2946 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT) && | |
2947 | (!elems.wmm_param || !elems.ht_cap_elem || !elems.ht_operation)) { | |
2948 | sdata_info(sdata, | |
35d865af JB |
2949 | "HT AP is missing WMM params or HT capability/operation\n"); |
2950 | ret = false; | |
2951 | goto out; | |
30eb1dc2 JB |
2952 | } |
2953 | ||
2954 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) && | |
2955 | (!elems.vht_cap_elem || !elems.vht_operation)) { | |
2956 | sdata_info(sdata, | |
35d865af JB |
2957 | "VHT AP is missing VHT capability/operation\n"); |
2958 | ret = false; | |
2959 | goto out; | |
30eb1dc2 JB |
2960 | } |
2961 | ||
2a33bee2 GE |
2962 | mutex_lock(&sdata->local->sta_mtx); |
2963 | /* | |
2964 | * station info was already allocated and inserted before | |
2965 | * the association and should be available to us | |
2966 | */ | |
7852e361 | 2967 | sta = sta_info_get(sdata, cbss->bssid); |
2a33bee2 GE |
2968 | if (WARN_ON(!sta)) { |
2969 | mutex_unlock(&sdata->local->sta_mtx); | |
35d865af JB |
2970 | ret = false; |
2971 | goto out; | |
77fdaa12 | 2972 | } |
05e5e883 | 2973 | |
55de908a | 2974 | sband = local->hw.wiphy->bands[ieee80211_get_sdata_band(sdata)]; |
f709fc69 | 2975 | |
30eb1dc2 | 2976 | /* Set up internal HT/VHT capabilities */ |
a8243b72 | 2977 | if (elems.ht_cap_elem && !(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) |
ef96a842 | 2978 | ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband, |
e1a0c6b3 | 2979 | elems.ht_cap_elem, sta); |
64f68e5d | 2980 | |
818255ea MP |
2981 | if (elems.vht_cap_elem && !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) |
2982 | ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband, | |
4a34215e | 2983 | elems.vht_cap_elem, sta); |
818255ea | 2984 | |
30eb1dc2 JB |
2985 | /* |
2986 | * Some APs, e.g. Netgear WNDR3700, report invalid HT operation data | |
2987 | * in their association response, so ignore that data for our own | |
2988 | * configuration. If it changed since the last beacon, we'll get the | |
2989 | * next beacon and update then. | |
2990 | */ | |
1128958d | 2991 | |
bee7f586 JB |
2992 | /* |
2993 | * If an operating mode notification IE is present, override the | |
2994 | * NSS calculation (that would be done in rate_control_rate_init()) | |
2995 | * and use the # of streams from that element. | |
2996 | */ | |
2997 | if (elems.opmode_notif && | |
2998 | !(*elems.opmode_notif & IEEE80211_OPMODE_NOTIF_RX_NSS_TYPE_BF)) { | |
2999 | u8 nss; | |
3000 | ||
3001 | nss = *elems.opmode_notif & IEEE80211_OPMODE_NOTIF_RX_NSS_MASK; | |
3002 | nss >>= IEEE80211_OPMODE_NOTIF_RX_NSS_SHIFT; | |
3003 | nss += 1; | |
3004 | sta->sta.rx_nss = nss; | |
3005 | } | |
3006 | ||
4b7679a5 | 3007 | rate_control_rate_init(sta); |
f0706e82 | 3008 | |
93f0490e | 3009 | if (ifmgd->flags & IEEE80211_STA_MFP_ENABLED) { |
c2c98fde | 3010 | set_sta_flag(sta, WLAN_STA_MFP); |
93f0490e T |
3011 | sta->sta.mfp = true; |
3012 | } else { | |
3013 | sta->sta.mfp = false; | |
3014 | } | |
5394af4d | 3015 | |
527871d7 | 3016 | sta->sta.wme = elems.wmm_param && local->hw.queues >= IEEE80211_NUM_ACS; |
ddf4ac53 | 3017 | |
3e4d40fa | 3018 | err = sta_info_move_state(sta, IEEE80211_STA_ASSOC); |
c8987876 JB |
3019 | if (!err && !(ifmgd->flags & IEEE80211_STA_CONTROL_PORT)) |
3020 | err = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED); | |
3021 | if (err) { | |
bdcbd8e0 JB |
3022 | sdata_info(sdata, |
3023 | "failed to move station %pM to desired state\n", | |
3024 | sta->sta.addr); | |
c8987876 JB |
3025 | WARN_ON(__sta_info_destroy(sta)); |
3026 | mutex_unlock(&sdata->local->sta_mtx); | |
35d865af JB |
3027 | ret = false; |
3028 | goto out; | |
c8987876 JB |
3029 | } |
3030 | ||
7852e361 | 3031 | mutex_unlock(&sdata->local->sta_mtx); |
ddf4ac53 | 3032 | |
f2176d72 JO |
3033 | /* |
3034 | * Always handle WMM once after association regardless | |
3035 | * of the first value the AP uses. Setting -1 here has | |
3036 | * that effect because the AP values is an unsigned | |
3037 | * 4-bit value. | |
3038 | */ | |
3039 | ifmgd->wmm_last_param_set = -1; | |
3040 | ||
2ed77ea6 | 3041 | if (ifmgd->flags & IEEE80211_STA_DISABLE_WMM) { |
cec66283 | 3042 | ieee80211_set_wmm_default(sdata, false, false); |
2ed77ea6 JB |
3043 | } else if (!ieee80211_sta_wmm_params(local, sdata, elems.wmm_param, |
3044 | elems.wmm_param_len)) { | |
3045 | /* still enable QoS since we might have HT/VHT */ | |
3046 | ieee80211_set_wmm_default(sdata, false, true); | |
3047 | /* set the disable-WMM flag in this case to disable | |
3048 | * tracking WMM parameter changes in the beacon if | |
3049 | * the parameters weren't actually valid. Doing so | |
3050 | * avoids changing parameters very strangely when | |
3051 | * the AP is going back and forth between valid and | |
3052 | * invalid parameters. | |
3053 | */ | |
3054 | ifmgd->flags |= IEEE80211_STA_DISABLE_WMM; | |
3055 | } | |
3abead59 | 3056 | changed |= BSS_CHANGED_QOS; |
f0706e82 | 3057 | |
60f8b39c JB |
3058 | /* set AID and assoc capability, |
3059 | * ieee80211_set_associated() will tell the driver */ | |
3060 | bss_conf->aid = aid; | |
3061 | bss_conf->assoc_capability = capab_info; | |
0c1ad2ca | 3062 | ieee80211_set_associated(sdata, cbss, changed); |
f0706e82 | 3063 | |
d524215f FF |
3064 | /* |
3065 | * If we're using 4-addr mode, let the AP know that we're | |
3066 | * doing so, so that it can create the STA VLAN on its side | |
3067 | */ | |
3068 | if (ifmgd->use_4addr) | |
3069 | ieee80211_send_4addr_nullfunc(local, sdata); | |
3070 | ||
15b7b062 | 3071 | /* |
b291ba11 JB |
3072 | * Start timer to probe the connection to the AP now. |
3073 | * Also start the timer that will detect beacon loss. | |
15b7b062 | 3074 | */ |
b291ba11 | 3075 | ieee80211_sta_rx_notify(sdata, (struct ieee80211_hdr *)mgmt); |
d3a910a8 | 3076 | ieee80211_sta_reset_beacon_monitor(sdata); |
15b7b062 | 3077 | |
35d865af JB |
3078 | ret = true; |
3079 | out: | |
3080 | kfree(bss_ies); | |
3081 | return ret; | |
f0706e82 JB |
3082 | } |
3083 | ||
8d61ffa5 JB |
3084 | static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata, |
3085 | struct ieee80211_mgmt *mgmt, | |
3086 | size_t len) | |
66e67e41 JB |
3087 | { |
3088 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
3089 | struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data; | |
3090 | u16 capab_info, status_code, aid; | |
3091 | struct ieee802_11_elems elems; | |
b0b6aa2c | 3092 | int ac, uapsd_queues = -1; |
66e67e41 JB |
3093 | u8 *pos; |
3094 | bool reassoc; | |
8d61ffa5 | 3095 | struct cfg80211_bss *bss; |
d0d1a12f EG |
3096 | struct ieee80211_event event = { |
3097 | .type = MLME_EVENT, | |
3098 | .u.mlme.data = ASSOC_EVENT, | |
3099 | }; | |
66e67e41 | 3100 | |
8d61ffa5 | 3101 | sdata_assert_lock(sdata); |
66e67e41 JB |
3102 | |
3103 | if (!assoc_data) | |
8d61ffa5 | 3104 | return; |
b203ca39 | 3105 | if (!ether_addr_equal(assoc_data->bss->bssid, mgmt->bssid)) |
8d61ffa5 | 3106 | return; |
66e67e41 JB |
3107 | |
3108 | /* | |
3109 | * AssocResp and ReassocResp have identical structure, so process both | |
3110 | * of them in this function. | |
3111 | */ | |
3112 | ||
3113 | if (len < 24 + 6) | |
8d61ffa5 | 3114 | return; |
66e67e41 JB |
3115 | |
3116 | reassoc = ieee80211_is_reassoc_req(mgmt->frame_control); | |
3117 | capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info); | |
3118 | status_code = le16_to_cpu(mgmt->u.assoc_resp.status_code); | |
3119 | aid = le16_to_cpu(mgmt->u.assoc_resp.aid); | |
3120 | ||
bdcbd8e0 JB |
3121 | sdata_info(sdata, |
3122 | "RX %sssocResp from %pM (capab=0x%x status=%d aid=%d)\n", | |
3123 | reassoc ? "Rea" : "A", mgmt->sa, | |
3124 | capab_info, status_code, (u16)(aid & ~(BIT(15) | BIT(14)))); | |
66e67e41 JB |
3125 | |
3126 | pos = mgmt->u.assoc_resp.variable; | |
b2e506bf | 3127 | ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), false, &elems); |
66e67e41 JB |
3128 | |
3129 | if (status_code == WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY && | |
79ba1d89 JB |
3130 | elems.timeout_int && |
3131 | elems.timeout_int->type == WLAN_TIMEOUT_ASSOC_COMEBACK) { | |
66e67e41 | 3132 | u32 tu, ms; |
79ba1d89 | 3133 | tu = le32_to_cpu(elems.timeout_int->value); |
66e67e41 | 3134 | ms = tu * 1024 / 1000; |
bdcbd8e0 JB |
3135 | sdata_info(sdata, |
3136 | "%pM rejected association temporarily; comeback duration %u TU (%u ms)\n", | |
3137 | mgmt->sa, tu, ms); | |
66e67e41 | 3138 | assoc_data->timeout = jiffies + msecs_to_jiffies(ms); |
89afe614 | 3139 | assoc_data->timeout_started = true; |
66e67e41 | 3140 | if (ms > IEEE80211_ASSOC_TIMEOUT) |
8d61ffa5 JB |
3141 | run_again(sdata, assoc_data->timeout); |
3142 | return; | |
66e67e41 JB |
3143 | } |
3144 | ||
8d61ffa5 | 3145 | bss = assoc_data->bss; |
66e67e41 JB |
3146 | |
3147 | if (status_code != WLAN_STATUS_SUCCESS) { | |
bdcbd8e0 JB |
3148 | sdata_info(sdata, "%pM denied association (code=%d)\n", |
3149 | mgmt->sa, status_code); | |
66e67e41 | 3150 | ieee80211_destroy_assoc_data(sdata, false); |
d0d1a12f EG |
3151 | event.u.mlme.status = MLME_DENIED; |
3152 | event.u.mlme.reason = status_code; | |
3153 | drv_event_callback(sdata->local, sdata, &event); | |
66e67e41 | 3154 | } else { |
8d61ffa5 | 3155 | if (!ieee80211_assoc_success(sdata, bss, mgmt, len)) { |
66e67e41 | 3156 | /* oops -- internal error -- send timeout for now */ |
10a9109f | 3157 | ieee80211_destroy_assoc_data(sdata, false); |
959867fa | 3158 | cfg80211_assoc_timeout(sdata->dev, bss); |
8d61ffa5 | 3159 | return; |
66e67e41 | 3160 | } |
d0d1a12f EG |
3161 | event.u.mlme.status = MLME_SUCCESS; |
3162 | drv_event_callback(sdata->local, sdata, &event); | |
635d999f | 3163 | sdata_info(sdata, "associated\n"); |
79ebfb85 JB |
3164 | |
3165 | /* | |
3166 | * destroy assoc_data afterwards, as otherwise an idle | |
3167 | * recalc after assoc_data is NULL but before associated | |
3168 | * is set can cause the interface to go idle | |
3169 | */ | |
3170 | ieee80211_destroy_assoc_data(sdata, true); | |
b0b6aa2c EP |
3171 | |
3172 | /* get uapsd queues configuration */ | |
3173 | uapsd_queues = 0; | |
3174 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
3175 | if (sdata->tx_conf[ac].uapsd) | |
3176 | uapsd_queues |= BIT(ac); | |
66e67e41 JB |
3177 | } |
3178 | ||
b0b6aa2c | 3179 | cfg80211_rx_assoc_resp(sdata->dev, bss, (u8 *)mgmt, len, uapsd_queues); |
66e67e41 | 3180 | } |
8e3c1b77 | 3181 | |
98c8fccf | 3182 | static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata, |
8e3c1b77 | 3183 | struct ieee80211_mgmt *mgmt, size_t len, |
98c8fccf | 3184 | struct ieee80211_rx_status *rx_status, |
d45c4172 | 3185 | struct ieee802_11_elems *elems) |
98c8fccf JB |
3186 | { |
3187 | struct ieee80211_local *local = sdata->local; | |
c2b13452 | 3188 | struct ieee80211_bss *bss; |
98c8fccf | 3189 | struct ieee80211_channel *channel; |
56007a02 | 3190 | |
8d61ffa5 | 3191 | sdata_assert_lock(sdata); |
b4f286a1 | 3192 | |
3afc2167 EG |
3193 | channel = ieee80211_get_channel(local->hw.wiphy, rx_status->freq); |
3194 | if (!channel) | |
98c8fccf JB |
3195 | return; |
3196 | ||
98c8fccf | 3197 | bss = ieee80211_bss_info_update(local, rx_status, mgmt, len, elems, |
d45c4172 | 3198 | channel); |
817cee76 | 3199 | if (bss) { |
817cee76 | 3200 | sdata->vif.bss_conf.beacon_rate = bss->beacon_rate; |
d2722f8b | 3201 | ieee80211_rx_bss_put(local, bss); |
817cee76 | 3202 | } |
f0706e82 JB |
3203 | } |
3204 | ||
3205 | ||
f698d856 | 3206 | static void ieee80211_rx_mgmt_probe_resp(struct ieee80211_sub_if_data *sdata, |
af6b6374 | 3207 | struct sk_buff *skb) |
f0706e82 | 3208 | { |
af6b6374 | 3209 | struct ieee80211_mgmt *mgmt = (void *)skb->data; |
15b7b062 | 3210 | struct ieee80211_if_managed *ifmgd; |
af6b6374 JB |
3211 | struct ieee80211_rx_status *rx_status = (void *) skb->cb; |
3212 | size_t baselen, len = skb->len; | |
ae6a44e3 EK |
3213 | struct ieee802_11_elems elems; |
3214 | ||
15b7b062 KV |
3215 | ifmgd = &sdata->u.mgd; |
3216 | ||
8d61ffa5 | 3217 | sdata_assert_lock(sdata); |
77fdaa12 | 3218 | |
b203ca39 | 3219 | if (!ether_addr_equal(mgmt->da, sdata->vif.addr)) |
8e7cdbb6 TW |
3220 | return; /* ignore ProbeResp to foreign address */ |
3221 | ||
ae6a44e3 EK |
3222 | baselen = (u8 *) mgmt->u.probe_resp.variable - (u8 *) mgmt; |
3223 | if (baselen > len) | |
3224 | return; | |
3225 | ||
3226 | ieee802_11_parse_elems(mgmt->u.probe_resp.variable, len - baselen, | |
b2e506bf | 3227 | false, &elems); |
ae6a44e3 | 3228 | |
d45c4172 | 3229 | ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems); |
9859b81e | 3230 | |
77fdaa12 | 3231 | if (ifmgd->associated && |
b203ca39 | 3232 | ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid)) |
4e5ff376 | 3233 | ieee80211_reset_ap_probe(sdata); |
f0706e82 JB |
3234 | } |
3235 | ||
d91f36db JB |
3236 | /* |
3237 | * This is the canonical list of information elements we care about, | |
3238 | * the filter code also gives us all changes to the Microsoft OUI | |
c8d65917 SG |
3239 | * (00:50:F2) vendor IE which is used for WMM which we need to track, |
3240 | * as well as the DTPC IE (part of the Cisco OUI) used for signaling | |
3241 | * changes to requested client power. | |
d91f36db JB |
3242 | * |
3243 | * We implement beacon filtering in software since that means we can | |
3244 | * avoid processing the frame here and in cfg80211, and userspace | |
3245 | * will not be able to tell whether the hardware supports it or not. | |
3246 | * | |
3247 | * XXX: This list needs to be dynamic -- userspace needs to be able to | |
3248 | * add items it requires. It also needs to be able to tell us to | |
3249 | * look out for other vendor IEs. | |
3250 | */ | |
3251 | static const u64 care_about_ies = | |
1d4df3a5 JB |
3252 | (1ULL << WLAN_EID_COUNTRY) | |
3253 | (1ULL << WLAN_EID_ERP_INFO) | | |
3254 | (1ULL << WLAN_EID_CHANNEL_SWITCH) | | |
3255 | (1ULL << WLAN_EID_PWR_CONSTRAINT) | | |
3256 | (1ULL << WLAN_EID_HT_CAPABILITY) | | |
70a3fd6c JB |
3257 | (1ULL << WLAN_EID_HT_OPERATION) | |
3258 | (1ULL << WLAN_EID_EXT_CHANSWITCH_ANN); | |
d91f36db | 3259 | |
8d61ffa5 JB |
3260 | static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata, |
3261 | struct ieee80211_mgmt *mgmt, size_t len, | |
3262 | struct ieee80211_rx_status *rx_status) | |
f0706e82 | 3263 | { |
d91f36db | 3264 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
17e4ec14 | 3265 | struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf; |
f0706e82 JB |
3266 | size_t baselen; |
3267 | struct ieee802_11_elems elems; | |
f698d856 | 3268 | struct ieee80211_local *local = sdata->local; |
55de908a JB |
3269 | struct ieee80211_chanctx_conf *chanctx_conf; |
3270 | struct ieee80211_channel *chan; | |
bee7f586 | 3271 | struct sta_info *sta; |
471b3efd | 3272 | u32 changed = 0; |
f87ad637 | 3273 | bool erp_valid; |
7a5158ef | 3274 | u8 erp_value = 0; |
d91f36db | 3275 | u32 ncrc; |
77fdaa12 | 3276 | u8 *bssid; |
8d61ffa5 | 3277 | u8 deauth_buf[IEEE80211_DEAUTH_FRAME_LEN]; |
77fdaa12 | 3278 | |
8d61ffa5 | 3279 | sdata_assert_lock(sdata); |
f0706e82 | 3280 | |
ae6a44e3 EK |
3281 | /* Process beacon from the current BSS */ |
3282 | baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt; | |
3283 | if (baselen > len) | |
8d61ffa5 | 3284 | return; |
ae6a44e3 | 3285 | |
55de908a JB |
3286 | rcu_read_lock(); |
3287 | chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); | |
3288 | if (!chanctx_conf) { | |
3289 | rcu_read_unlock(); | |
8d61ffa5 | 3290 | return; |
55de908a JB |
3291 | } |
3292 | ||
4bf88530 | 3293 | if (rx_status->freq != chanctx_conf->def.chan->center_freq) { |
55de908a | 3294 | rcu_read_unlock(); |
8d61ffa5 | 3295 | return; |
55de908a | 3296 | } |
4bf88530 | 3297 | chan = chanctx_conf->def.chan; |
55de908a | 3298 | rcu_read_unlock(); |
f0706e82 | 3299 | |
c65dd147 | 3300 | if (ifmgd->assoc_data && ifmgd->assoc_data->need_beacon && |
b203ca39 | 3301 | ether_addr_equal(mgmt->bssid, ifmgd->assoc_data->bss->bssid)) { |
66e67e41 | 3302 | ieee802_11_parse_elems(mgmt->u.beacon.variable, |
b2e506bf | 3303 | len - baselen, false, &elems); |
77fdaa12 | 3304 | |
d45c4172 | 3305 | ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems); |
482a9c74 AB |
3306 | if (elems.tim && !elems.parse_error) { |
3307 | const struct ieee80211_tim_ie *tim_ie = elems.tim; | |
3308 | ifmgd->dtim_period = tim_ie->dtim_period; | |
3309 | } | |
989c6505 | 3310 | ifmgd->have_beacon = true; |
c65dd147 | 3311 | ifmgd->assoc_data->need_beacon = false; |
30686bf7 | 3312 | if (ieee80211_hw_check(&local->hw, TIMING_BEACON_ONLY)) { |
ef429dad JB |
3313 | sdata->vif.bss_conf.sync_tsf = |
3314 | le64_to_cpu(mgmt->u.beacon.timestamp); | |
3315 | sdata->vif.bss_conf.sync_device_ts = | |
3316 | rx_status->device_timestamp; | |
3317 | if (elems.tim) | |
3318 | sdata->vif.bss_conf.sync_dtim_count = | |
3319 | elems.tim->dtim_count; | |
3320 | else | |
3321 | sdata->vif.bss_conf.sync_dtim_count = 0; | |
3322 | } | |
66e67e41 JB |
3323 | /* continue assoc process */ |
3324 | ifmgd->assoc_data->timeout = jiffies; | |
89afe614 | 3325 | ifmgd->assoc_data->timeout_started = true; |
8d61ffa5 JB |
3326 | run_again(sdata, ifmgd->assoc_data->timeout); |
3327 | return; | |
66e67e41 | 3328 | } |
77fdaa12 | 3329 | |
66e67e41 | 3330 | if (!ifmgd->associated || |
b203ca39 | 3331 | !ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid)) |
8d61ffa5 | 3332 | return; |
66e67e41 | 3333 | bssid = ifmgd->associated->bssid; |
f0706e82 | 3334 | |
17e4ec14 | 3335 | /* Track average RSSI from the Beacon frames of the current AP */ |
17e4ec14 JM |
3336 | if (ifmgd->flags & IEEE80211_STA_RESET_SIGNAL_AVE) { |
3337 | ifmgd->flags &= ~IEEE80211_STA_RESET_SIGNAL_AVE; | |
338c17ae | 3338 | ewma_beacon_signal_init(&ifmgd->ave_beacon_signal); |
17e4ec14 | 3339 | ifmgd->last_cqm_event_signal = 0; |
391a200a | 3340 | ifmgd->count_beacon_signal = 1; |
615f7b9b | 3341 | ifmgd->last_ave_beacon_signal = 0; |
17e4ec14 | 3342 | } else { |
391a200a | 3343 | ifmgd->count_beacon_signal++; |
17e4ec14 | 3344 | } |
615f7b9b | 3345 | |
338c17ae JB |
3346 | ewma_beacon_signal_add(&ifmgd->ave_beacon_signal, -rx_status->signal); |
3347 | ||
615f7b9b MV |
3348 | if (ifmgd->rssi_min_thold != ifmgd->rssi_max_thold && |
3349 | ifmgd->count_beacon_signal >= IEEE80211_SIGNAL_AVE_MIN_COUNT) { | |
338c17ae | 3350 | int sig = -ewma_beacon_signal_read(&ifmgd->ave_beacon_signal); |
615f7b9b | 3351 | int last_sig = ifmgd->last_ave_beacon_signal; |
a8182929 EG |
3352 | struct ieee80211_event event = { |
3353 | .type = RSSI_EVENT, | |
3354 | }; | |
615f7b9b MV |
3355 | |
3356 | /* | |
3357 | * if signal crosses either of the boundaries, invoke callback | |
3358 | * with appropriate parameters | |
3359 | */ | |
3360 | if (sig > ifmgd->rssi_max_thold && | |
3361 | (last_sig <= ifmgd->rssi_min_thold || last_sig == 0)) { | |
3362 | ifmgd->last_ave_beacon_signal = sig; | |
a8182929 EG |
3363 | event.u.rssi.data = RSSI_EVENT_HIGH; |
3364 | drv_event_callback(local, sdata, &event); | |
615f7b9b MV |
3365 | } else if (sig < ifmgd->rssi_min_thold && |
3366 | (last_sig >= ifmgd->rssi_max_thold || | |
3367 | last_sig == 0)) { | |
3368 | ifmgd->last_ave_beacon_signal = sig; | |
a8182929 EG |
3369 | event.u.rssi.data = RSSI_EVENT_LOW; |
3370 | drv_event_callback(local, sdata, &event); | |
615f7b9b MV |
3371 | } |
3372 | } | |
3373 | ||
17e4ec14 | 3374 | if (bss_conf->cqm_rssi_thold && |
391a200a | 3375 | ifmgd->count_beacon_signal >= IEEE80211_SIGNAL_AVE_MIN_COUNT && |
ea086359 | 3376 | !(sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)) { |
338c17ae | 3377 | int sig = -ewma_beacon_signal_read(&ifmgd->ave_beacon_signal); |
17e4ec14 JM |
3378 | int last_event = ifmgd->last_cqm_event_signal; |
3379 | int thold = bss_conf->cqm_rssi_thold; | |
3380 | int hyst = bss_conf->cqm_rssi_hyst; | |
338c17ae | 3381 | |
17e4ec14 JM |
3382 | if (sig < thold && |
3383 | (last_event == 0 || sig < last_event - hyst)) { | |
3384 | ifmgd->last_cqm_event_signal = sig; | |
3385 | ieee80211_cqm_rssi_notify( | |
3386 | &sdata->vif, | |
3387 | NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW, | |
3388 | GFP_KERNEL); | |
3389 | } else if (sig > thold && | |
3390 | (last_event == 0 || sig > last_event + hyst)) { | |
3391 | ifmgd->last_cqm_event_signal = sig; | |
3392 | ieee80211_cqm_rssi_notify( | |
3393 | &sdata->vif, | |
3394 | NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH, | |
3395 | GFP_KERNEL); | |
3396 | } | |
3397 | } | |
3398 | ||
392b9ffb | 3399 | if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL) { |
bdcbd8e0 | 3400 | mlme_dbg_ratelimited(sdata, |
112c31f0 | 3401 | "cancelling AP probe due to a received beacon\n"); |
392b9ffb | 3402 | ieee80211_reset_ap_probe(sdata); |
92778180 JM |
3403 | } |
3404 | ||
b291ba11 JB |
3405 | /* |
3406 | * Push the beacon loss detection into the future since | |
3407 | * we are processing a beacon from the AP just now. | |
3408 | */ | |
d3a910a8 | 3409 | ieee80211_sta_reset_beacon_monitor(sdata); |
b291ba11 | 3410 | |
d91f36db JB |
3411 | ncrc = crc32_be(0, (void *)&mgmt->u.beacon.beacon_int, 4); |
3412 | ncrc = ieee802_11_parse_elems_crc(mgmt->u.beacon.variable, | |
b2e506bf | 3413 | len - baselen, false, &elems, |
d91f36db JB |
3414 | care_about_ies, ncrc); |
3415 | ||
90d13e8f JB |
3416 | if (ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK) && |
3417 | ieee80211_check_tim(elems.tim, elems.tim_len, ifmgd->aid)) { | |
3418 | if (local->hw.conf.dynamic_ps_timeout > 0) { | |
3419 | if (local->hw.conf.flags & IEEE80211_CONF_PS) { | |
3420 | local->hw.conf.flags &= ~IEEE80211_CONF_PS; | |
3421 | ieee80211_hw_config(local, | |
3422 | IEEE80211_CONF_CHANGE_PS); | |
572e0012 | 3423 | } |
076cdcb1 | 3424 | ieee80211_send_nullfunc(local, sdata, false); |
90d13e8f JB |
3425 | } else if (!local->pspolling && sdata->u.mgd.powersave) { |
3426 | local->pspolling = true; | |
3427 | ||
3428 | /* | |
3429 | * Here is assumed that the driver will be | |
3430 | * able to send ps-poll frame and receive a | |
3431 | * response even though power save mode is | |
3432 | * enabled, but some drivers might require | |
3433 | * to disable power save here. This needs | |
3434 | * to be investigated. | |
3435 | */ | |
3436 | ieee80211_send_pspoll(local, sdata); | |
a97b77b9 VN |
3437 | } |
3438 | } | |
7a5158ef | 3439 | |
b115b972 JD |
3440 | if (sdata->vif.p2p || |
3441 | sdata->vif.driver_flags & IEEE80211_VIF_GET_NOA_UPDATE) { | |
67baf663 | 3442 | struct ieee80211_p2p_noa_attr noa = {}; |
488dd7b5 JB |
3443 | int ret; |
3444 | ||
3445 | ret = cfg80211_get_p2p_attr(mgmt->u.beacon.variable, | |
3446 | len - baselen, | |
3447 | IEEE80211_P2P_ATTR_ABSENCE_NOTICE, | |
934457ee | 3448 | (u8 *) &noa, sizeof(noa)); |
67baf663 JD |
3449 | if (ret >= 2) { |
3450 | if (sdata->u.mgd.p2p_noa_index != noa.index) { | |
3451 | /* valid noa_attr and index changed */ | |
3452 | sdata->u.mgd.p2p_noa_index = noa.index; | |
3453 | memcpy(&bss_conf->p2p_noa_attr, &noa, sizeof(noa)); | |
3454 | changed |= BSS_CHANGED_P2P_PS; | |
3455 | /* | |
3456 | * make sure we update all information, the CRC | |
3457 | * mechanism doesn't look at P2P attributes. | |
3458 | */ | |
3459 | ifmgd->beacon_crc_valid = false; | |
3460 | } | |
3461 | } else if (sdata->u.mgd.p2p_noa_index != -1) { | |
3462 | /* noa_attr not found and we had valid noa_attr before */ | |
3463 | sdata->u.mgd.p2p_noa_index = -1; | |
3464 | memset(&bss_conf->p2p_noa_attr, 0, sizeof(bss_conf->p2p_noa_attr)); | |
488dd7b5 | 3465 | changed |= BSS_CHANGED_P2P_PS; |
488dd7b5 JB |
3466 | ifmgd->beacon_crc_valid = false; |
3467 | } | |
3468 | } | |
3469 | ||
0c21e632 LC |
3470 | if (ifmgd->csa_waiting_bcn) |
3471 | ieee80211_chswitch_post_beacon(sdata); | |
3472 | ||
2ecc3905 AB |
3473 | /* |
3474 | * Update beacon timing and dtim count on every beacon appearance. This | |
3475 | * will allow the driver to use the most updated values. Do it before | |
3476 | * comparing this one with last received beacon. | |
3477 | * IMPORTANT: These parameters would possibly be out of sync by the time | |
3478 | * the driver will use them. The synchronized view is currently | |
3479 | * guaranteed only in certain callbacks. | |
3480 | */ | |
30686bf7 | 3481 | if (ieee80211_hw_check(&local->hw, TIMING_BEACON_ONLY)) { |
2ecc3905 AB |
3482 | sdata->vif.bss_conf.sync_tsf = |
3483 | le64_to_cpu(mgmt->u.beacon.timestamp); | |
3484 | sdata->vif.bss_conf.sync_device_ts = | |
3485 | rx_status->device_timestamp; | |
3486 | if (elems.tim) | |
3487 | sdata->vif.bss_conf.sync_dtim_count = | |
3488 | elems.tim->dtim_count; | |
3489 | else | |
3490 | sdata->vif.bss_conf.sync_dtim_count = 0; | |
3491 | } | |
3492 | ||
d8ec4433 | 3493 | if (ncrc == ifmgd->beacon_crc && ifmgd->beacon_crc_valid) |
8d61ffa5 | 3494 | return; |
30196673 | 3495 | ifmgd->beacon_crc = ncrc; |
d8ec4433 | 3496 | ifmgd->beacon_crc_valid = true; |
30196673 | 3497 | |
d45c4172 | 3498 | ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems); |
7d25745d | 3499 | |
d70b7616 | 3500 | ieee80211_sta_process_chanswitch(sdata, rx_status->mactime, |
2ba45384 | 3501 | rx_status->device_timestamp, |
d70b7616 JB |
3502 | &elems, true); |
3503 | ||
095d81ce JB |
3504 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_WMM) && |
3505 | ieee80211_sta_wmm_params(local, sdata, elems.wmm_param, | |
7d25745d JB |
3506 | elems.wmm_param_len)) |
3507 | changed |= BSS_CHANGED_QOS; | |
3508 | ||
c65dd147 EG |
3509 | /* |
3510 | * If we haven't had a beacon before, tell the driver about the | |
ef429dad | 3511 | * DTIM period (and beacon timing if desired) now. |
c65dd147 | 3512 | */ |
989c6505 | 3513 | if (!ifmgd->have_beacon) { |
c65dd147 EG |
3514 | /* a few bogus AP send dtim_period = 0 or no TIM IE */ |
3515 | if (elems.tim) | |
3516 | bss_conf->dtim_period = elems.tim->dtim_period ?: 1; | |
3517 | else | |
3518 | bss_conf->dtim_period = 1; | |
ef429dad | 3519 | |
989c6505 AB |
3520 | changed |= BSS_CHANGED_BEACON_INFO; |
3521 | ifmgd->have_beacon = true; | |
482a9c74 AB |
3522 | |
3523 | mutex_lock(&local->iflist_mtx); | |
4a733ef1 | 3524 | ieee80211_recalc_ps(local); |
482a9c74 AB |
3525 | mutex_unlock(&local->iflist_mtx); |
3526 | ||
ce857888 | 3527 | ieee80211_recalc_ps_vif(sdata); |
c65dd147 EG |
3528 | } |
3529 | ||
1946bed9 | 3530 | if (elems.erp_info) { |
7a5158ef JB |
3531 | erp_valid = true; |
3532 | erp_value = elems.erp_info[0]; | |
3533 | } else { | |
3534 | erp_valid = false; | |
50c4afb9 | 3535 | } |
7a5158ef JB |
3536 | changed |= ieee80211_handle_bss_capability(sdata, |
3537 | le16_to_cpu(mgmt->u.beacon.capab_info), | |
3538 | erp_valid, erp_value); | |
f0706e82 | 3539 | |
1128958d | 3540 | mutex_lock(&local->sta_mtx); |
bee7f586 JB |
3541 | sta = sta_info_get(sdata, bssid); |
3542 | ||
53b954ee EP |
3543 | if (ieee80211_config_bw(sdata, sta, |
3544 | elems.ht_cap_elem, elems.ht_operation, | |
30eb1dc2 JB |
3545 | elems.vht_operation, bssid, &changed)) { |
3546 | mutex_unlock(&local->sta_mtx); | |
3547 | ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, | |
3548 | WLAN_REASON_DEAUTH_LEAVING, | |
3549 | true, deauth_buf); | |
a90faa9d EG |
3550 | ieee80211_report_disconnect(sdata, deauth_buf, |
3551 | sizeof(deauth_buf), true, | |
3552 | WLAN_REASON_DEAUTH_LEAVING); | |
8d61ffa5 | 3553 | return; |
30eb1dc2 | 3554 | } |
bee7f586 JB |
3555 | |
3556 | if (sta && elems.opmode_notif) | |
3557 | ieee80211_vht_handle_opmode(sdata, sta, *elems.opmode_notif, | |
cf1e05c6 | 3558 | rx_status->band); |
1128958d | 3559 | mutex_unlock(&local->sta_mtx); |
d3c990fb | 3560 | |
24a4e400 SG |
3561 | changed |= ieee80211_handle_pwr_constr(sdata, chan, mgmt, |
3562 | elems.country_elem, | |
3563 | elems.country_elem_len, | |
c8d65917 SG |
3564 | elems.pwr_constr_elem, |
3565 | elems.cisco_dtpc_elem); | |
3f2355cb | 3566 | |
471b3efd | 3567 | ieee80211_bss_info_change_notify(sdata, changed); |
f0706e82 JB |
3568 | } |
3569 | ||
1fa57d01 JB |
3570 | void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, |
3571 | struct sk_buff *skb) | |
f0706e82 JB |
3572 | { |
3573 | struct ieee80211_rx_status *rx_status; | |
f0706e82 JB |
3574 | struct ieee80211_mgmt *mgmt; |
3575 | u16 fc; | |
1b3a2e49 JB |
3576 | struct ieee802_11_elems elems; |
3577 | int ies_len; | |
f0706e82 | 3578 | |
f0706e82 JB |
3579 | rx_status = (struct ieee80211_rx_status *) skb->cb; |
3580 | mgmt = (struct ieee80211_mgmt *) skb->data; | |
3581 | fc = le16_to_cpu(mgmt->frame_control); | |
3582 | ||
8d61ffa5 | 3583 | sdata_lock(sdata); |
77fdaa12 | 3584 | |
66e67e41 JB |
3585 | switch (fc & IEEE80211_FCTL_STYPE) { |
3586 | case IEEE80211_STYPE_BEACON: | |
8d61ffa5 | 3587 | ieee80211_rx_mgmt_beacon(sdata, mgmt, skb->len, rx_status); |
66e67e41 JB |
3588 | break; |
3589 | case IEEE80211_STYPE_PROBE_RESP: | |
3590 | ieee80211_rx_mgmt_probe_resp(sdata, skb); | |
3591 | break; | |
3592 | case IEEE80211_STYPE_AUTH: | |
8d61ffa5 | 3593 | ieee80211_rx_mgmt_auth(sdata, mgmt, skb->len); |
66e67e41 JB |
3594 | break; |
3595 | case IEEE80211_STYPE_DEAUTH: | |
8d61ffa5 | 3596 | ieee80211_rx_mgmt_deauth(sdata, mgmt, skb->len); |
66e67e41 JB |
3597 | break; |
3598 | case IEEE80211_STYPE_DISASSOC: | |
8d61ffa5 | 3599 | ieee80211_rx_mgmt_disassoc(sdata, mgmt, skb->len); |
66e67e41 JB |
3600 | break; |
3601 | case IEEE80211_STYPE_ASSOC_RESP: | |
3602 | case IEEE80211_STYPE_REASSOC_RESP: | |
8d61ffa5 | 3603 | ieee80211_rx_mgmt_assoc_resp(sdata, mgmt, skb->len); |
66e67e41 JB |
3604 | break; |
3605 | case IEEE80211_STYPE_ACTION: | |
37799e52 | 3606 | if (mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT) { |
1b3a2e49 JB |
3607 | ies_len = skb->len - |
3608 | offsetof(struct ieee80211_mgmt, | |
3609 | u.action.u.chan_switch.variable); | |
37799e52 JB |
3610 | |
3611 | if (ies_len < 0) | |
3612 | break; | |
3613 | ||
3614 | ieee802_11_parse_elems( | |
3615 | mgmt->u.action.u.chan_switch.variable, | |
b2e506bf | 3616 | ies_len, true, &elems); |
37799e52 JB |
3617 | |
3618 | if (elems.parse_error) | |
3619 | break; | |
3620 | ||
1b3a2e49 | 3621 | ieee80211_sta_process_chanswitch(sdata, |
2ba45384 LC |
3622 | rx_status->mactime, |
3623 | rx_status->device_timestamp, | |
3624 | &elems, false); | |
1b3a2e49 JB |
3625 | } else if (mgmt->u.action.category == WLAN_CATEGORY_PUBLIC) { |
3626 | ies_len = skb->len - | |
3627 | offsetof(struct ieee80211_mgmt, | |
3628 | u.action.u.ext_chan_switch.variable); | |
3629 | ||
3630 | if (ies_len < 0) | |
3631 | break; | |
3632 | ||
3633 | ieee802_11_parse_elems( | |
3634 | mgmt->u.action.u.ext_chan_switch.variable, | |
b2e506bf | 3635 | ies_len, true, &elems); |
1b3a2e49 JB |
3636 | |
3637 | if (elems.parse_error) | |
3638 | break; | |
3639 | ||
3640 | /* for the handling code pretend this was also an IE */ | |
3641 | elems.ext_chansw_ie = | |
3642 | &mgmt->u.action.u.ext_chan_switch.data; | |
3643 | ||
66e67e41 | 3644 | ieee80211_sta_process_chanswitch(sdata, |
2ba45384 LC |
3645 | rx_status->mactime, |
3646 | rx_status->device_timestamp, | |
3647 | &elems, false); | |
77fdaa12 | 3648 | } |
37799e52 | 3649 | break; |
77fdaa12 | 3650 | } |
8d61ffa5 | 3651 | sdata_unlock(sdata); |
f0706e82 JB |
3652 | } |
3653 | ||
9c6bd790 | 3654 | static void ieee80211_sta_timer(unsigned long data) |
f0706e82 | 3655 | { |
60f8b39c JB |
3656 | struct ieee80211_sub_if_data *sdata = |
3657 | (struct ieee80211_sub_if_data *) data; | |
5bb644a0 | 3658 | |
9b7d72c1 | 3659 | ieee80211_queue_work(&sdata->local->hw, &sdata->work); |
f0706e82 JB |
3660 | } |
3661 | ||
04ac3c0e | 3662 | static void ieee80211_sta_connection_lost(struct ieee80211_sub_if_data *sdata, |
6b684db1 | 3663 | u8 *bssid, u8 reason, bool tx) |
04ac3c0e | 3664 | { |
6ae16775 | 3665 | u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN]; |
04ac3c0e | 3666 | |
37ad3888 | 3667 | ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, reason, |
6b684db1 | 3668 | tx, frame_buf); |
37ad3888 | 3669 | |
a90faa9d EG |
3670 | ieee80211_report_disconnect(sdata, frame_buf, sizeof(frame_buf), true, |
3671 | reason); | |
04ac3c0e FF |
3672 | } |
3673 | ||
46cad4b7 | 3674 | static int ieee80211_auth(struct ieee80211_sub_if_data *sdata) |
66e67e41 JB |
3675 | { |
3676 | struct ieee80211_local *local = sdata->local; | |
3677 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
3678 | struct ieee80211_mgd_auth_data *auth_data = ifmgd->auth_data; | |
1672c0e3 | 3679 | u32 tx_flags = 0; |
46cad4b7 JB |
3680 | u16 trans = 1; |
3681 | u16 status = 0; | |
66e67e41 | 3682 | |
8d61ffa5 | 3683 | sdata_assert_lock(sdata); |
66e67e41 JB |
3684 | |
3685 | if (WARN_ON_ONCE(!auth_data)) | |
3686 | return -EINVAL; | |
3687 | ||
66e67e41 JB |
3688 | auth_data->tries++; |
3689 | ||
3690 | if (auth_data->tries > IEEE80211_AUTH_MAX_TRIES) { | |
bdcbd8e0 JB |
3691 | sdata_info(sdata, "authentication with %pM timed out\n", |
3692 | auth_data->bss->bssid); | |
66e67e41 JB |
3693 | |
3694 | /* | |
3695 | * Most likely AP is not in the range so remove the | |
3696 | * bss struct for that AP. | |
3697 | */ | |
3698 | cfg80211_unlink_bss(local->hw.wiphy, auth_data->bss); | |
3699 | ||
3700 | return -ETIMEDOUT; | |
3701 | } | |
3702 | ||
a1845fc7 JB |
3703 | drv_mgd_prepare_tx(local, sdata); |
3704 | ||
46cad4b7 JB |
3705 | sdata_info(sdata, "send auth to %pM (try %d/%d)\n", |
3706 | auth_data->bss->bssid, auth_data->tries, | |
3707 | IEEE80211_AUTH_MAX_TRIES); | |
66e67e41 | 3708 | |
46cad4b7 | 3709 | auth_data->expected_transaction = 2; |
6b8ece3a | 3710 | |
46cad4b7 JB |
3711 | if (auth_data->algorithm == WLAN_AUTH_SAE) { |
3712 | trans = auth_data->sae_trans; | |
3713 | status = auth_data->sae_status; | |
3714 | auth_data->expected_transaction = trans; | |
3715 | } | |
66e67e41 | 3716 | |
46cad4b7 JB |
3717 | if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) |
3718 | tx_flags = IEEE80211_TX_CTL_REQ_TX_STATUS | | |
3719 | IEEE80211_TX_INTFL_MLME_CONN_TX; | |
66e67e41 | 3720 | |
46cad4b7 JB |
3721 | ieee80211_send_auth(sdata, trans, auth_data->algorithm, status, |
3722 | auth_data->data, auth_data->data_len, | |
3723 | auth_data->bss->bssid, | |
3724 | auth_data->bss->bssid, NULL, 0, 0, | |
3725 | tx_flags); | |
66e67e41 | 3726 | |
6211dd12 | 3727 | if (tx_flags == 0) { |
1672c0e3 | 3728 | auth_data->timeout = jiffies + IEEE80211_AUTH_TIMEOUT; |
cb236d2d | 3729 | auth_data->timeout_started = true; |
8d61ffa5 | 3730 | run_again(sdata, auth_data->timeout); |
89afe614 | 3731 | } else { |
cb236d2d JB |
3732 | auth_data->timeout = |
3733 | round_jiffies_up(jiffies + IEEE80211_AUTH_TIMEOUT_LONG); | |
3734 | auth_data->timeout_started = true; | |
3735 | run_again(sdata, auth_data->timeout); | |
1672c0e3 | 3736 | } |
66e67e41 JB |
3737 | |
3738 | return 0; | |
3739 | } | |
3740 | ||
3741 | static int ieee80211_do_assoc(struct ieee80211_sub_if_data *sdata) | |
3742 | { | |
3743 | struct ieee80211_mgd_assoc_data *assoc_data = sdata->u.mgd.assoc_data; | |
3744 | struct ieee80211_local *local = sdata->local; | |
3745 | ||
8d61ffa5 | 3746 | sdata_assert_lock(sdata); |
66e67e41 | 3747 | |
66e67e41 JB |
3748 | assoc_data->tries++; |
3749 | if (assoc_data->tries > IEEE80211_ASSOC_MAX_TRIES) { | |
bdcbd8e0 JB |
3750 | sdata_info(sdata, "association with %pM timed out\n", |
3751 | assoc_data->bss->bssid); | |
66e67e41 JB |
3752 | |
3753 | /* | |
3754 | * Most likely AP is not in the range so remove the | |
3755 | * bss struct for that AP. | |
3756 | */ | |
3757 | cfg80211_unlink_bss(local->hw.wiphy, assoc_data->bss); | |
3758 | ||
3759 | return -ETIMEDOUT; | |
3760 | } | |
3761 | ||
bdcbd8e0 JB |
3762 | sdata_info(sdata, "associate with %pM (try %d/%d)\n", |
3763 | assoc_data->bss->bssid, assoc_data->tries, | |
3764 | IEEE80211_ASSOC_MAX_TRIES); | |
66e67e41 JB |
3765 | ieee80211_send_assoc(sdata); |
3766 | ||
30686bf7 | 3767 | if (!ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) { |
1672c0e3 | 3768 | assoc_data->timeout = jiffies + IEEE80211_ASSOC_TIMEOUT; |
89afe614 | 3769 | assoc_data->timeout_started = true; |
8d61ffa5 | 3770 | run_again(sdata, assoc_data->timeout); |
89afe614 | 3771 | } else { |
cb236d2d JB |
3772 | assoc_data->timeout = |
3773 | round_jiffies_up(jiffies + | |
3774 | IEEE80211_ASSOC_TIMEOUT_LONG); | |
3775 | assoc_data->timeout_started = true; | |
3776 | run_again(sdata, assoc_data->timeout); | |
1672c0e3 | 3777 | } |
66e67e41 JB |
3778 | |
3779 | return 0; | |
3780 | } | |
3781 | ||
1672c0e3 JB |
3782 | void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata, |
3783 | __le16 fc, bool acked) | |
3784 | { | |
3785 | struct ieee80211_local *local = sdata->local; | |
3786 | ||
3787 | sdata->u.mgd.status_fc = fc; | |
3788 | sdata->u.mgd.status_acked = acked; | |
3789 | sdata->u.mgd.status_received = true; | |
3790 | ||
3791 | ieee80211_queue_work(&local->hw, &sdata->work); | |
3792 | } | |
3793 | ||
1fa57d01 | 3794 | void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata) |
9c6bd790 | 3795 | { |
9c6bd790 | 3796 | struct ieee80211_local *local = sdata->local; |
1fa57d01 | 3797 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
9c6bd790 | 3798 | |
8d61ffa5 | 3799 | sdata_lock(sdata); |
77fdaa12 | 3800 | |
1672c0e3 JB |
3801 | if (ifmgd->status_received) { |
3802 | __le16 fc = ifmgd->status_fc; | |
3803 | bool status_acked = ifmgd->status_acked; | |
3804 | ||
3805 | ifmgd->status_received = false; | |
46cad4b7 | 3806 | if (ifmgd->auth_data && ieee80211_is_auth(fc)) { |
1672c0e3 JB |
3807 | if (status_acked) { |
3808 | ifmgd->auth_data->timeout = | |
3809 | jiffies + IEEE80211_AUTH_TIMEOUT_SHORT; | |
8d61ffa5 | 3810 | run_again(sdata, ifmgd->auth_data->timeout); |
1672c0e3 JB |
3811 | } else { |
3812 | ifmgd->auth_data->timeout = jiffies - 1; | |
3813 | } | |
89afe614 | 3814 | ifmgd->auth_data->timeout_started = true; |
1672c0e3 JB |
3815 | } else if (ifmgd->assoc_data && |
3816 | (ieee80211_is_assoc_req(fc) || | |
3817 | ieee80211_is_reassoc_req(fc))) { | |
3818 | if (status_acked) { | |
3819 | ifmgd->assoc_data->timeout = | |
3820 | jiffies + IEEE80211_ASSOC_TIMEOUT_SHORT; | |
8d61ffa5 | 3821 | run_again(sdata, ifmgd->assoc_data->timeout); |
1672c0e3 JB |
3822 | } else { |
3823 | ifmgd->assoc_data->timeout = jiffies - 1; | |
3824 | } | |
89afe614 | 3825 | ifmgd->assoc_data->timeout_started = true; |
1672c0e3 JB |
3826 | } |
3827 | } | |
3828 | ||
89afe614 | 3829 | if (ifmgd->auth_data && ifmgd->auth_data->timeout_started && |
66e67e41 JB |
3830 | time_after(jiffies, ifmgd->auth_data->timeout)) { |
3831 | if (ifmgd->auth_data->done) { | |
3832 | /* | |
3833 | * ok ... we waited for assoc but userspace didn't, | |
3834 | * so let's just kill the auth data | |
3835 | */ | |
3836 | ieee80211_destroy_auth_data(sdata, false); | |
46cad4b7 | 3837 | } else if (ieee80211_auth(sdata)) { |
66e67e41 | 3838 | u8 bssid[ETH_ALEN]; |
a9409093 EG |
3839 | struct ieee80211_event event = { |
3840 | .type = MLME_EVENT, | |
3841 | .u.mlme.data = AUTH_EVENT, | |
3842 | .u.mlme.status = MLME_TIMEOUT, | |
3843 | }; | |
66e67e41 JB |
3844 | |
3845 | memcpy(bssid, ifmgd->auth_data->bss->bssid, ETH_ALEN); | |
3846 | ||
3847 | ieee80211_destroy_auth_data(sdata, false); | |
3848 | ||
6ff57cf8 | 3849 | cfg80211_auth_timeout(sdata->dev, bssid); |
a9409093 | 3850 | drv_event_callback(sdata->local, sdata, &event); |
66e67e41 | 3851 | } |
89afe614 | 3852 | } else if (ifmgd->auth_data && ifmgd->auth_data->timeout_started) |
8d61ffa5 | 3853 | run_again(sdata, ifmgd->auth_data->timeout); |
66e67e41 | 3854 | |
89afe614 | 3855 | if (ifmgd->assoc_data && ifmgd->assoc_data->timeout_started && |
66e67e41 | 3856 | time_after(jiffies, ifmgd->assoc_data->timeout)) { |
989c6505 | 3857 | if ((ifmgd->assoc_data->need_beacon && !ifmgd->have_beacon) || |
66e67e41 | 3858 | ieee80211_do_assoc(sdata)) { |
959867fa | 3859 | struct cfg80211_bss *bss = ifmgd->assoc_data->bss; |
d0d1a12f EG |
3860 | struct ieee80211_event event = { |
3861 | .type = MLME_EVENT, | |
3862 | .u.mlme.data = ASSOC_EVENT, | |
3863 | .u.mlme.status = MLME_TIMEOUT, | |
3864 | }; | |
66e67e41 JB |
3865 | |
3866 | ieee80211_destroy_assoc_data(sdata, false); | |
959867fa | 3867 | cfg80211_assoc_timeout(sdata->dev, bss); |
d0d1a12f | 3868 | drv_event_callback(sdata->local, sdata, &event); |
66e67e41 | 3869 | } |
89afe614 | 3870 | } else if (ifmgd->assoc_data && ifmgd->assoc_data->timeout_started) |
8d61ffa5 | 3871 | run_again(sdata, ifmgd->assoc_data->timeout); |
66e67e41 | 3872 | |
392b9ffb | 3873 | if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL && |
b291ba11 | 3874 | ifmgd->associated) { |
a43abf29 | 3875 | u8 bssid[ETH_ALEN]; |
72a8a3ed | 3876 | int max_tries; |
a43abf29 | 3877 | |
0c1ad2ca | 3878 | memcpy(bssid, ifmgd->associated->bssid, ETH_ALEN); |
4e5ff376 | 3879 | |
30686bf7 | 3880 | if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) |
180205bd | 3881 | max_tries = max_nullfunc_tries; |
72a8a3ed | 3882 | else |
180205bd | 3883 | max_tries = max_probe_tries; |
72a8a3ed | 3884 | |
4e5ff376 FF |
3885 | /* ACK received for nullfunc probing frame */ |
3886 | if (!ifmgd->probe_send_count) | |
3887 | ieee80211_reset_ap_probe(sdata); | |
04ac3c0e FF |
3888 | else if (ifmgd->nullfunc_failed) { |
3889 | if (ifmgd->probe_send_count < max_tries) { | |
bdcbd8e0 JB |
3890 | mlme_dbg(sdata, |
3891 | "No ack for nullfunc frame to AP %pM, try %d/%i\n", | |
3892 | bssid, ifmgd->probe_send_count, | |
3893 | max_tries); | |
04ac3c0e FF |
3894 | ieee80211_mgd_probe_ap_send(sdata); |
3895 | } else { | |
bdcbd8e0 JB |
3896 | mlme_dbg(sdata, |
3897 | "No ack for nullfunc frame to AP %pM, disconnecting.\n", | |
3898 | bssid); | |
95acac61 | 3899 | ieee80211_sta_connection_lost(sdata, bssid, |
6b684db1 JB |
3900 | WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, |
3901 | false); | |
04ac3c0e FF |
3902 | } |
3903 | } else if (time_is_after_jiffies(ifmgd->probe_timeout)) | |
8d61ffa5 | 3904 | run_again(sdata, ifmgd->probe_timeout); |
30686bf7 | 3905 | else if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) { |
bdcbd8e0 JB |
3906 | mlme_dbg(sdata, |
3907 | "Failed to send nullfunc to AP %pM after %dms, disconnecting\n", | |
3908 | bssid, probe_wait_ms); | |
95acac61 | 3909 | ieee80211_sta_connection_lost(sdata, bssid, |
6b684db1 | 3910 | WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, false); |
04ac3c0e | 3911 | } else if (ifmgd->probe_send_count < max_tries) { |
bdcbd8e0 JB |
3912 | mlme_dbg(sdata, |
3913 | "No probe response from AP %pM after %dms, try %d/%i\n", | |
3914 | bssid, probe_wait_ms, | |
3915 | ifmgd->probe_send_count, max_tries); | |
a43abf29 ML |
3916 | ieee80211_mgd_probe_ap_send(sdata); |
3917 | } else { | |
b291ba11 JB |
3918 | /* |
3919 | * We actually lost the connection ... or did we? | |
3920 | * Let's make sure! | |
3921 | */ | |
b38afa87 BG |
3922 | wiphy_debug(local->hw.wiphy, |
3923 | "%s: No probe response from AP %pM" | |
3924 | " after %dms, disconnecting.\n", | |
3925 | sdata->name, | |
180205bd | 3926 | bssid, probe_wait_ms); |
04ac3c0e | 3927 | |
95acac61 | 3928 | ieee80211_sta_connection_lost(sdata, bssid, |
6b684db1 | 3929 | WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, false); |
b291ba11 JB |
3930 | } |
3931 | } | |
3932 | ||
8d61ffa5 | 3933 | sdata_unlock(sdata); |
f0706e82 JB |
3934 | } |
3935 | ||
b291ba11 JB |
3936 | static void ieee80211_sta_bcn_mon_timer(unsigned long data) |
3937 | { | |
3938 | struct ieee80211_sub_if_data *sdata = | |
3939 | (struct ieee80211_sub_if_data *) data; | |
0c21e632 | 3940 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
b291ba11 | 3941 | |
0c21e632 | 3942 | if (sdata->vif.csa_active && !ifmgd->csa_waiting_bcn) |
e5593f56 MK |
3943 | return; |
3944 | ||
682bd38b | 3945 | sdata->u.mgd.connection_loss = false; |
1e4dcd01 JO |
3946 | ieee80211_queue_work(&sdata->local->hw, |
3947 | &sdata->u.mgd.beacon_connection_loss_work); | |
b291ba11 JB |
3948 | } |
3949 | ||
3950 | static void ieee80211_sta_conn_mon_timer(unsigned long data) | |
3951 | { | |
3952 | struct ieee80211_sub_if_data *sdata = | |
3953 | (struct ieee80211_sub_if_data *) data; | |
3954 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
3955 | struct ieee80211_local *local = sdata->local; | |
3956 | ||
0c21e632 | 3957 | if (sdata->vif.csa_active && !ifmgd->csa_waiting_bcn) |
e5593f56 MK |
3958 | return; |
3959 | ||
42935eca | 3960 | ieee80211_queue_work(&local->hw, &ifmgd->monitor_work); |
b291ba11 JB |
3961 | } |
3962 | ||
3963 | static void ieee80211_sta_monitor_work(struct work_struct *work) | |
3964 | { | |
3965 | struct ieee80211_sub_if_data *sdata = | |
3966 | container_of(work, struct ieee80211_sub_if_data, | |
3967 | u.mgd.monitor_work); | |
3968 | ||
3969 | ieee80211_mgd_probe_ap(sdata, false); | |
3970 | } | |
3971 | ||
9c6bd790 JB |
3972 | static void ieee80211_restart_sta_timer(struct ieee80211_sub_if_data *sdata) |
3973 | { | |
ad935687 | 3974 | if (sdata->vif.type == NL80211_IFTYPE_STATION) { |
925e64c3 | 3975 | __ieee80211_stop_poll(sdata); |
ad935687 | 3976 | |
b291ba11 | 3977 | /* let's probe the connection once */ |
30686bf7 | 3978 | if (!ieee80211_hw_check(&sdata->local->hw, CONNECTION_MONITOR)) |
494f1fe5 EP |
3979 | ieee80211_queue_work(&sdata->local->hw, |
3980 | &sdata->u.mgd.monitor_work); | |
b291ba11 | 3981 | /* and do all the other regular work too */ |
64592c8f | 3982 | ieee80211_queue_work(&sdata->local->hw, &sdata->work); |
ad935687 | 3983 | } |
9c6bd790 | 3984 | } |
f0706e82 | 3985 | |
b8360ab8 | 3986 | #ifdef CONFIG_PM |
1a1cb744 JB |
3987 | void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata) |
3988 | { | |
3989 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
3990 | u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN]; | |
3991 | ||
3992 | sdata_lock(sdata); | |
3993 | ||
c52666ae EG |
3994 | if (ifmgd->auth_data || ifmgd->assoc_data) { |
3995 | const u8 *bssid = ifmgd->auth_data ? | |
3996 | ifmgd->auth_data->bss->bssid : | |
3997 | ifmgd->assoc_data->bss->bssid; | |
3998 | ||
1a1cb744 | 3999 | /* |
c52666ae EG |
4000 | * If we are trying to authenticate / associate while suspending, |
4001 | * cfg80211 won't know and won't actually abort those attempts, | |
4002 | * thus we need to do that ourselves. | |
1a1cb744 | 4003 | */ |
c52666ae | 4004 | ieee80211_send_deauth_disassoc(sdata, bssid, |
1a1cb744 JB |
4005 | IEEE80211_STYPE_DEAUTH, |
4006 | WLAN_REASON_DEAUTH_LEAVING, | |
4007 | false, frame_buf); | |
c52666ae EG |
4008 | if (ifmgd->assoc_data) |
4009 | ieee80211_destroy_assoc_data(sdata, false); | |
4010 | if (ifmgd->auth_data) | |
4011 | ieee80211_destroy_auth_data(sdata, false); | |
1a1cb744 JB |
4012 | cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf, |
4013 | IEEE80211_DEAUTH_FRAME_LEN); | |
4014 | } | |
4015 | ||
be72afe0 JB |
4016 | /* This is a bit of a hack - we should find a better and more generic |
4017 | * solution to this. Normally when suspending, cfg80211 will in fact | |
4018 | * deauthenticate. However, it doesn't (and cannot) stop an ongoing | |
4019 | * auth (not so important) or assoc (this is the problem) process. | |
4020 | * | |
4021 | * As a consequence, it can happen that we are in the process of both | |
4022 | * associating and suspending, and receive an association response | |
4023 | * after cfg80211 has checked if it needs to disconnect, but before | |
4024 | * we actually set the flag to drop incoming frames. This will then | |
4025 | * cause the workqueue flush to process the association response in | |
4026 | * the suspend, resulting in a successful association just before it | |
4027 | * tries to remove the interface from the driver, which now though | |
4028 | * has a channel context assigned ... this results in issues. | |
4029 | * | |
4030 | * To work around this (for now) simply deauth here again if we're | |
4031 | * now connected. | |
4032 | */ | |
4033 | if (ifmgd->associated && !sdata->local->wowlan) { | |
4034 | u8 bssid[ETH_ALEN]; | |
4035 | struct cfg80211_deauth_request req = { | |
4036 | .reason_code = WLAN_REASON_DEAUTH_LEAVING, | |
4037 | .bssid = bssid, | |
4038 | }; | |
4039 | ||
4040 | memcpy(bssid, ifmgd->associated->bssid, ETH_ALEN); | |
4041 | ieee80211_mgd_deauth(sdata, &req); | |
4042 | } | |
4043 | ||
1a1cb744 JB |
4044 | sdata_unlock(sdata); |
4045 | } | |
4046 | ||
b8360ab8 JB |
4047 | void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata) |
4048 | { | |
4049 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
4050 | ||
8d61ffa5 | 4051 | sdata_lock(sdata); |
b8360ab8 | 4052 | if (!ifmgd->associated) { |
8d61ffa5 | 4053 | sdata_unlock(sdata); |
b8360ab8 JB |
4054 | return; |
4055 | } | |
4056 | ||
4057 | if (sdata->flags & IEEE80211_SDATA_DISCONNECT_RESUME) { | |
4058 | sdata->flags &= ~IEEE80211_SDATA_DISCONNECT_RESUME; | |
4059 | mlme_dbg(sdata, "driver requested disconnect after resume\n"); | |
4060 | ieee80211_sta_connection_lost(sdata, | |
4061 | ifmgd->associated->bssid, | |
4062 | WLAN_REASON_UNSPECIFIED, | |
4063 | true); | |
8d61ffa5 | 4064 | sdata_unlock(sdata); |
b8360ab8 JB |
4065 | return; |
4066 | } | |
8d61ffa5 | 4067 | sdata_unlock(sdata); |
b8360ab8 JB |
4068 | } |
4069 | #endif | |
4070 | ||
9c6bd790 JB |
4071 | /* interface setup */ |
4072 | void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata) | |
f0706e82 | 4073 | { |
46900298 | 4074 | struct ieee80211_if_managed *ifmgd; |
988c0f72 | 4075 | |
46900298 | 4076 | ifmgd = &sdata->u.mgd; |
b291ba11 | 4077 | INIT_WORK(&ifmgd->monitor_work, ieee80211_sta_monitor_work); |
46900298 | 4078 | INIT_WORK(&ifmgd->chswitch_work, ieee80211_chswitch_work); |
1e4dcd01 JO |
4079 | INIT_WORK(&ifmgd->beacon_connection_loss_work, |
4080 | ieee80211_beacon_connection_loss_work); | |
882a7c69 JB |
4081 | INIT_WORK(&ifmgd->csa_connection_drop_work, |
4082 | ieee80211_csa_connection_drop_work); | |
687da132 | 4083 | INIT_WORK(&ifmgd->request_smps_work, ieee80211_request_smps_mgd_work); |
81dd2b88 AN |
4084 | INIT_DELAYED_WORK(&ifmgd->tdls_peer_del_work, |
4085 | ieee80211_tdls_peer_del_work); | |
46900298 | 4086 | setup_timer(&ifmgd->timer, ieee80211_sta_timer, |
c481ec97 | 4087 | (unsigned long) sdata); |
b291ba11 JB |
4088 | setup_timer(&ifmgd->bcn_mon_timer, ieee80211_sta_bcn_mon_timer, |
4089 | (unsigned long) sdata); | |
4090 | setup_timer(&ifmgd->conn_mon_timer, ieee80211_sta_conn_mon_timer, | |
4091 | (unsigned long) sdata); | |
46900298 | 4092 | setup_timer(&ifmgd->chswitch_timer, ieee80211_chswitch_timer, |
9c6bd790 | 4093 | (unsigned long) sdata); |
02219b3a JB |
4094 | INIT_DELAYED_WORK(&ifmgd->tx_tspec_wk, |
4095 | ieee80211_sta_handle_tspec_ac_params_wk); | |
9c6bd790 | 4096 | |
ab1faead | 4097 | ifmgd->flags = 0; |
1478acb3 | 4098 | ifmgd->powersave = sdata->wdev.ps; |
219c3867 AB |
4099 | ifmgd->uapsd_queues = sdata->local->hw.uapsd_queues; |
4100 | ifmgd->uapsd_max_sp_len = sdata->local->hw.uapsd_max_sp_len; | |
67baf663 | 4101 | ifmgd->p2p_noa_index = -1; |
bbbdff9e | 4102 | |
0d8614b4 | 4103 | if (sdata->local->hw.wiphy->features & NL80211_FEATURE_DYNAMIC_SMPS) |
0f78231b JB |
4104 | ifmgd->req_smps = IEEE80211_SMPS_AUTOMATIC; |
4105 | else | |
4106 | ifmgd->req_smps = IEEE80211_SMPS_OFF; | |
1277b4a9 LK |
4107 | |
4108 | /* Setup TDLS data */ | |
4109 | spin_lock_init(&ifmgd->teardown_lock); | |
4110 | ifmgd->teardown_skb = NULL; | |
4111 | ifmgd->orig_teardown_skb = NULL; | |
f0706e82 JB |
4112 | } |
4113 | ||
77fdaa12 JB |
4114 | /* scan finished notification */ |
4115 | void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local) | |
60f8b39c | 4116 | { |
31ee67a1 | 4117 | struct ieee80211_sub_if_data *sdata; |
60f8b39c | 4118 | |
77fdaa12 JB |
4119 | /* Restart STA timers */ |
4120 | rcu_read_lock(); | |
370bd005 BG |
4121 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { |
4122 | if (ieee80211_sdata_running(sdata)) | |
4123 | ieee80211_restart_sta_timer(sdata); | |
4124 | } | |
77fdaa12 JB |
4125 | rcu_read_unlock(); |
4126 | } | |
60f8b39c | 4127 | |
f2d9d270 JB |
4128 | static u8 ieee80211_ht_vht_rx_chains(struct ieee80211_sub_if_data *sdata, |
4129 | struct cfg80211_bss *cbss) | |
4130 | { | |
4131 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
4132 | const u8 *ht_cap_ie, *vht_cap_ie; | |
4133 | const struct ieee80211_ht_cap *ht_cap; | |
4134 | const struct ieee80211_vht_cap *vht_cap; | |
4135 | u8 chains = 1; | |
4136 | ||
4137 | if (ifmgd->flags & IEEE80211_STA_DISABLE_HT) | |
4138 | return chains; | |
4139 | ||
9caf0364 | 4140 | ht_cap_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_HT_CAPABILITY); |
f2d9d270 JB |
4141 | if (ht_cap_ie && ht_cap_ie[1] >= sizeof(*ht_cap)) { |
4142 | ht_cap = (void *)(ht_cap_ie + 2); | |
4143 | chains = ieee80211_mcs_to_chains(&ht_cap->mcs); | |
4144 | /* | |
4145 | * TODO: use "Tx Maximum Number Spatial Streams Supported" and | |
4146 | * "Tx Unequal Modulation Supported" fields. | |
4147 | */ | |
4148 | } | |
4149 | ||
4150 | if (ifmgd->flags & IEEE80211_STA_DISABLE_VHT) | |
4151 | return chains; | |
4152 | ||
9caf0364 | 4153 | vht_cap_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_VHT_CAPABILITY); |
f2d9d270 JB |
4154 | if (vht_cap_ie && vht_cap_ie[1] >= sizeof(*vht_cap)) { |
4155 | u8 nss; | |
4156 | u16 tx_mcs_map; | |
4157 | ||
4158 | vht_cap = (void *)(vht_cap_ie + 2); | |
4159 | tx_mcs_map = le16_to_cpu(vht_cap->supp_mcs.tx_mcs_map); | |
4160 | for (nss = 8; nss > 0; nss--) { | |
4161 | if (((tx_mcs_map >> (2 * (nss - 1))) & 3) != | |
4162 | IEEE80211_VHT_MCS_NOT_SUPPORTED) | |
4163 | break; | |
4164 | } | |
4165 | /* TODO: use "Tx Highest Supported Long GI Data Rate" field? */ | |
4166 | chains = max(chains, nss); | |
4167 | } | |
4168 | ||
4169 | return chains; | |
4170 | } | |
4171 | ||
b17166a7 JB |
4172 | static int ieee80211_prep_channel(struct ieee80211_sub_if_data *sdata, |
4173 | struct cfg80211_bss *cbss) | |
a1cf775d JB |
4174 | { |
4175 | struct ieee80211_local *local = sdata->local; | |
4176 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
53b954ee | 4177 | const struct ieee80211_ht_cap *ht_cap = NULL; |
24398e39 | 4178 | const struct ieee80211_ht_operation *ht_oper = NULL; |
f2d9d270 | 4179 | const struct ieee80211_vht_operation *vht_oper = NULL; |
24398e39 | 4180 | struct ieee80211_supported_band *sband; |
4bf88530 | 4181 | struct cfg80211_chan_def chandef; |
f2d9d270 | 4182 | int ret; |
52a45f38 AN |
4183 | u32 i; |
4184 | bool have_80mhz; | |
a1cf775d | 4185 | |
24398e39 JB |
4186 | sband = local->hw.wiphy->bands[cbss->channel->band]; |
4187 | ||
f2d9d270 JB |
4188 | ifmgd->flags &= ~(IEEE80211_STA_DISABLE_40MHZ | |
4189 | IEEE80211_STA_DISABLE_80P80MHZ | | |
4190 | IEEE80211_STA_DISABLE_160MHZ); | |
4191 | ||
9caf0364 JB |
4192 | rcu_read_lock(); |
4193 | ||
f2d9d270 JB |
4194 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT) && |
4195 | sband->ht_cap.ht_supported) { | |
53b954ee | 4196 | const u8 *ht_oper_ie, *ht_cap_ie; |
24398e39 | 4197 | |
9caf0364 | 4198 | ht_oper_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_HT_OPERATION); |
24398e39 JB |
4199 | if (ht_oper_ie && ht_oper_ie[1] >= sizeof(*ht_oper)) |
4200 | ht_oper = (void *)(ht_oper_ie + 2); | |
08e6effa | 4201 | |
53b954ee EP |
4202 | ht_cap_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_HT_CAPABILITY); |
4203 | if (ht_cap_ie && ht_cap_ie[1] >= sizeof(*ht_cap)) | |
4204 | ht_cap = (void *)(ht_cap_ie + 2); | |
4205 | ||
4206 | if (!ht_cap) { | |
08e6effa JB |
4207 | ifmgd->flags |= IEEE80211_STA_DISABLE_HT; |
4208 | ht_oper = NULL; | |
4209 | } | |
24398e39 JB |
4210 | } |
4211 | ||
f2d9d270 JB |
4212 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) && |
4213 | sband->vht_cap.vht_supported) { | |
08e6effa | 4214 | const u8 *vht_oper_ie, *vht_cap; |
f2d9d270 | 4215 | |
9caf0364 JB |
4216 | vht_oper_ie = ieee80211_bss_get_ie(cbss, |
4217 | WLAN_EID_VHT_OPERATION); | |
f2d9d270 JB |
4218 | if (vht_oper_ie && vht_oper_ie[1] >= sizeof(*vht_oper)) |
4219 | vht_oper = (void *)(vht_oper_ie + 2); | |
4220 | if (vht_oper && !ht_oper) { | |
4221 | vht_oper = NULL; | |
bdcbd8e0 | 4222 | sdata_info(sdata, |
f2d9d270 | 4223 | "AP advertised VHT without HT, disabling both\n"); |
cb145022 JB |
4224 | ifmgd->flags |= IEEE80211_STA_DISABLE_HT; |
4225 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; | |
24398e39 | 4226 | } |
08e6effa JB |
4227 | |
4228 | vht_cap = ieee80211_bss_get_ie(cbss, WLAN_EID_VHT_CAPABILITY); | |
4229 | if (!vht_cap || vht_cap[1] < sizeof(struct ieee80211_vht_cap)) { | |
4230 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; | |
4231 | vht_oper = NULL; | |
4232 | } | |
24398e39 JB |
4233 | } |
4234 | ||
52a45f38 AN |
4235 | /* Allow VHT if at least one channel on the sband supports 80 MHz */ |
4236 | have_80mhz = false; | |
4237 | for (i = 0; i < sband->n_channels; i++) { | |
4238 | if (sband->channels[i].flags & (IEEE80211_CHAN_DISABLED | | |
4239 | IEEE80211_CHAN_NO_80MHZ)) | |
4240 | continue; | |
4241 | ||
4242 | have_80mhz = true; | |
4243 | break; | |
4244 | } | |
4245 | ||
4246 | if (!have_80mhz) | |
4247 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; | |
4248 | ||
f2d9d270 JB |
4249 | ifmgd->flags |= ieee80211_determine_chantype(sdata, sband, |
4250 | cbss->channel, | |
53b954ee | 4251 | ht_cap, ht_oper, vht_oper, |
5cdaed1e | 4252 | &chandef, false); |
04ecd257 | 4253 | |
f2d9d270 JB |
4254 | sdata->needed_rx_chains = min(ieee80211_ht_vht_rx_chains(sdata, cbss), |
4255 | local->rx_chains); | |
24398e39 | 4256 | |
9caf0364 JB |
4257 | rcu_read_unlock(); |
4258 | ||
04ecd257 JB |
4259 | /* will change later if needed */ |
4260 | sdata->smps_mode = IEEE80211_SMPS_OFF; | |
4261 | ||
34a3740d | 4262 | mutex_lock(&local->mtx); |
f2d9d270 JB |
4263 | /* |
4264 | * If this fails (possibly due to channel context sharing | |
4265 | * on incompatible channels, e.g. 80+80 and 160 sharing the | |
4266 | * same control channel) try to use a smaller bandwidth. | |
4267 | */ | |
4268 | ret = ieee80211_vif_use_channel(sdata, &chandef, | |
4269 | IEEE80211_CHANCTX_SHARED); | |
0418a445 SW |
4270 | |
4271 | /* don't downgrade for 5 and 10 MHz channels, though. */ | |
4272 | if (chandef.width == NL80211_CHAN_WIDTH_5 || | |
4273 | chandef.width == NL80211_CHAN_WIDTH_10) | |
34a3740d | 4274 | goto out; |
0418a445 | 4275 | |
d601cd8d | 4276 | while (ret && chandef.width != NL80211_CHAN_WIDTH_20_NOHT) { |
e6b7cde4 | 4277 | ifmgd->flags |= ieee80211_chandef_downgrade(&chandef); |
d601cd8d JB |
4278 | ret = ieee80211_vif_use_channel(sdata, &chandef, |
4279 | IEEE80211_CHANCTX_SHARED); | |
4280 | } | |
34a3740d JB |
4281 | out: |
4282 | mutex_unlock(&local->mtx); | |
f2d9d270 | 4283 | return ret; |
b17166a7 JB |
4284 | } |
4285 | ||
4286 | static int ieee80211_prep_connection(struct ieee80211_sub_if_data *sdata, | |
c1041f10 CRI |
4287 | struct cfg80211_bss *cbss, bool assoc, |
4288 | bool override) | |
b17166a7 JB |
4289 | { |
4290 | struct ieee80211_local *local = sdata->local; | |
4291 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
4292 | struct ieee80211_bss *bss = (void *)cbss->priv; | |
4293 | struct sta_info *new_sta = NULL; | |
179b8fc7 | 4294 | struct ieee80211_supported_band *sband; |
c1041f10 | 4295 | bool have_sta = false; |
b17166a7 JB |
4296 | int err; |
4297 | ||
179b8fc7 CRI |
4298 | sband = local->hw.wiphy->bands[cbss->channel->band]; |
4299 | ||
b17166a7 JB |
4300 | if (WARN_ON(!ifmgd->auth_data && !ifmgd->assoc_data)) |
4301 | return -EINVAL; | |
4302 | ||
4303 | if (assoc) { | |
4304 | rcu_read_lock(); | |
4305 | have_sta = sta_info_get(sdata, cbss->bssid); | |
4306 | rcu_read_unlock(); | |
4307 | } | |
4308 | ||
4309 | if (!have_sta) { | |
4310 | new_sta = sta_info_alloc(sdata, cbss->bssid, GFP_KERNEL); | |
4311 | if (!new_sta) | |
4312 | return -ENOMEM; | |
4313 | } | |
179b8fc7 | 4314 | |
c1041f10 | 4315 | if (new_sta || override) { |
179b8fc7 CRI |
4316 | err = ieee80211_prep_channel(sdata, cbss); |
4317 | if (err) { | |
4318 | if (new_sta) | |
4319 | sta_info_free(local, new_sta); | |
4320 | return -EINVAL; | |
4321 | } | |
4322 | } | |
4323 | ||
13e0c8e3 | 4324 | if (new_sta) { |
5d6a1b06 JB |
4325 | u32 rates = 0, basic_rates = 0; |
4326 | bool have_higher_than_11mbit; | |
4327 | int min_rate = INT_MAX, min_rate_index = -1; | |
2103dec1 | 4328 | struct ieee80211_chanctx_conf *chanctx_conf; |
8cef2c9d | 4329 | const struct cfg80211_bss_ies *ies; |
179b8fc7 | 4330 | int shift = ieee80211_vif_get_shift(&sdata->vif); |
2103dec1 | 4331 | u32 rate_flags; |
b17166a7 | 4332 | |
2103dec1 SW |
4333 | rcu_read_lock(); |
4334 | chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); | |
4335 | if (WARN_ON(!chanctx_conf)) { | |
4336 | rcu_read_unlock(); | |
c368ddaa | 4337 | sta_info_free(local, new_sta); |
2103dec1 SW |
4338 | return -EINVAL; |
4339 | } | |
4340 | rate_flags = ieee80211_chandef_rate_flags(&chanctx_conf->def); | |
4341 | rcu_read_unlock(); | |
5d6a1b06 | 4342 | |
5d6a1b06 JB |
4343 | ieee80211_get_rates(sband, bss->supp_rates, |
4344 | bss->supp_rates_len, | |
4345 | &rates, &basic_rates, | |
4346 | &have_higher_than_11mbit, | |
2103dec1 SW |
4347 | &min_rate, &min_rate_index, |
4348 | shift, rate_flags); | |
5d6a1b06 JB |
4349 | |
4350 | /* | |
4351 | * This used to be a workaround for basic rates missing | |
4352 | * in the association response frame. Now that we no | |
4353 | * longer use the basic rates from there, it probably | |
4354 | * doesn't happen any more, but keep the workaround so | |
4355 | * in case some *other* APs are buggy in different ways | |
4356 | * we can connect -- with a warning. | |
4357 | */ | |
4358 | if (!basic_rates && min_rate_index >= 0) { | |
bdcbd8e0 JB |
4359 | sdata_info(sdata, |
4360 | "No basic rates, using min rate instead\n"); | |
5d6a1b06 JB |
4361 | basic_rates = BIT(min_rate_index); |
4362 | } | |
4363 | ||
13e0c8e3 | 4364 | new_sta->sta.supp_rates[cbss->channel->band] = rates; |
5d6a1b06 JB |
4365 | sdata->vif.bss_conf.basic_rates = basic_rates; |
4366 | ||
4367 | /* cf. IEEE 802.11 9.2.12 */ | |
55de908a | 4368 | if (cbss->channel->band == IEEE80211_BAND_2GHZ && |
5d6a1b06 JB |
4369 | have_higher_than_11mbit) |
4370 | sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE; | |
4371 | else | |
4372 | sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE; | |
4373 | ||
4374 | memcpy(ifmgd->bssid, cbss->bssid, ETH_ALEN); | |
4375 | ||
8c358bcd JB |
4376 | /* set timing information */ |
4377 | sdata->vif.bss_conf.beacon_int = cbss->beacon_interval; | |
8cef2c9d | 4378 | rcu_read_lock(); |
ef429dad JB |
4379 | ies = rcu_dereference(cbss->beacon_ies); |
4380 | if (ies) { | |
4381 | const u8 *tim_ie; | |
4382 | ||
4383 | sdata->vif.bss_conf.sync_tsf = ies->tsf; | |
4384 | sdata->vif.bss_conf.sync_device_ts = | |
4385 | bss->device_ts_beacon; | |
4386 | tim_ie = cfg80211_find_ie(WLAN_EID_TIM, | |
4387 | ies->data, ies->len); | |
4388 | if (tim_ie && tim_ie[1] >= 2) | |
4389 | sdata->vif.bss_conf.sync_dtim_count = tim_ie[2]; | |
4390 | else | |
4391 | sdata->vif.bss_conf.sync_dtim_count = 0; | |
30686bf7 JB |
4392 | } else if (!ieee80211_hw_check(&sdata->local->hw, |
4393 | TIMING_BEACON_ONLY)) { | |
ef429dad JB |
4394 | ies = rcu_dereference(cbss->proberesp_ies); |
4395 | /* must be non-NULL since beacon IEs were NULL */ | |
4396 | sdata->vif.bss_conf.sync_tsf = ies->tsf; | |
4397 | sdata->vif.bss_conf.sync_device_ts = | |
4398 | bss->device_ts_presp; | |
4399 | sdata->vif.bss_conf.sync_dtim_count = 0; | |
4400 | } else { | |
4401 | sdata->vif.bss_conf.sync_tsf = 0; | |
4402 | sdata->vif.bss_conf.sync_device_ts = 0; | |
4403 | sdata->vif.bss_conf.sync_dtim_count = 0; | |
4404 | } | |
8cef2c9d | 4405 | rcu_read_unlock(); |
8c358bcd JB |
4406 | |
4407 | /* tell driver about BSSID, basic rates and timing */ | |
5d6a1b06 | 4408 | ieee80211_bss_info_change_notify(sdata, |
8c358bcd JB |
4409 | BSS_CHANGED_BSSID | BSS_CHANGED_BASIC_RATES | |
4410 | BSS_CHANGED_BEACON_INT); | |
a1cf775d JB |
4411 | |
4412 | if (assoc) | |
13e0c8e3 | 4413 | sta_info_pre_move_state(new_sta, IEEE80211_STA_AUTH); |
a1cf775d | 4414 | |
13e0c8e3 JB |
4415 | err = sta_info_insert(new_sta); |
4416 | new_sta = NULL; | |
a1cf775d | 4417 | if (err) { |
bdcbd8e0 JB |
4418 | sdata_info(sdata, |
4419 | "failed to insert STA entry for the AP (error %d)\n", | |
4420 | err); | |
a1cf775d JB |
4421 | return err; |
4422 | } | |
4423 | } else | |
b203ca39 | 4424 | WARN_ON_ONCE(!ether_addr_equal(ifmgd->bssid, cbss->bssid)); |
a1cf775d | 4425 | |
7d830a19 DS |
4426 | /* Cancel scan to ensure that nothing interferes with connection */ |
4427 | if (local->scanning) | |
4428 | ieee80211_scan_cancel(local); | |
4429 | ||
a1cf775d JB |
4430 | return 0; |
4431 | } | |
4432 | ||
77fdaa12 JB |
4433 | /* config hooks */ |
4434 | int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, | |
4435 | struct cfg80211_auth_request *req) | |
9c6bd790 | 4436 | { |
66e67e41 JB |
4437 | struct ieee80211_local *local = sdata->local; |
4438 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
4439 | struct ieee80211_mgd_auth_data *auth_data; | |
77fdaa12 | 4440 | u16 auth_alg; |
66e67e41 JB |
4441 | int err; |
4442 | ||
4443 | /* prepare auth data structure */ | |
9c6bd790 | 4444 | |
77fdaa12 JB |
4445 | switch (req->auth_type) { |
4446 | case NL80211_AUTHTYPE_OPEN_SYSTEM: | |
4447 | auth_alg = WLAN_AUTH_OPEN; | |
4448 | break; | |
4449 | case NL80211_AUTHTYPE_SHARED_KEY: | |
66e67e41 | 4450 | if (IS_ERR(local->wep_tx_tfm)) |
9dca9c49 | 4451 | return -EOPNOTSUPP; |
77fdaa12 JB |
4452 | auth_alg = WLAN_AUTH_SHARED_KEY; |
4453 | break; | |
4454 | case NL80211_AUTHTYPE_FT: | |
4455 | auth_alg = WLAN_AUTH_FT; | |
4456 | break; | |
4457 | case NL80211_AUTHTYPE_NETWORK_EAP: | |
4458 | auth_alg = WLAN_AUTH_LEAP; | |
4459 | break; | |
6b8ece3a JM |
4460 | case NL80211_AUTHTYPE_SAE: |
4461 | auth_alg = WLAN_AUTH_SAE; | |
4462 | break; | |
77fdaa12 JB |
4463 | default: |
4464 | return -EOPNOTSUPP; | |
60f8b39c | 4465 | } |
77fdaa12 | 4466 | |
6b8ece3a JM |
4467 | auth_data = kzalloc(sizeof(*auth_data) + req->sae_data_len + |
4468 | req->ie_len, GFP_KERNEL); | |
66e67e41 | 4469 | if (!auth_data) |
9c6bd790 | 4470 | return -ENOMEM; |
77fdaa12 | 4471 | |
66e67e41 | 4472 | auth_data->bss = req->bss; |
77fdaa12 | 4473 | |
6b8ece3a JM |
4474 | if (req->sae_data_len >= 4) { |
4475 | __le16 *pos = (__le16 *) req->sae_data; | |
4476 | auth_data->sae_trans = le16_to_cpu(pos[0]); | |
4477 | auth_data->sae_status = le16_to_cpu(pos[1]); | |
4478 | memcpy(auth_data->data, req->sae_data + 4, | |
4479 | req->sae_data_len - 4); | |
4480 | auth_data->data_len += req->sae_data_len - 4; | |
4481 | } | |
4482 | ||
77fdaa12 | 4483 | if (req->ie && req->ie_len) { |
6b8ece3a JM |
4484 | memcpy(&auth_data->data[auth_data->data_len], |
4485 | req->ie, req->ie_len); | |
4486 | auth_data->data_len += req->ie_len; | |
9c6bd790 | 4487 | } |
77fdaa12 | 4488 | |
fffd0934 | 4489 | if (req->key && req->key_len) { |
66e67e41 JB |
4490 | auth_data->key_len = req->key_len; |
4491 | auth_data->key_idx = req->key_idx; | |
4492 | memcpy(auth_data->key, req->key, req->key_len); | |
fffd0934 JB |
4493 | } |
4494 | ||
66e67e41 | 4495 | auth_data->algorithm = auth_alg; |
60f8b39c | 4496 | |
66e67e41 | 4497 | /* try to authenticate/probe */ |
2a33bee2 | 4498 | |
66e67e41 JB |
4499 | if ((ifmgd->auth_data && !ifmgd->auth_data->done) || |
4500 | ifmgd->assoc_data) { | |
4501 | err = -EBUSY; | |
4502 | goto err_free; | |
2a33bee2 GE |
4503 | } |
4504 | ||
66e67e41 JB |
4505 | if (ifmgd->auth_data) |
4506 | ieee80211_destroy_auth_data(sdata, false); | |
2a33bee2 | 4507 | |
66e67e41 JB |
4508 | /* prep auth_data so we don't go into idle on disassoc */ |
4509 | ifmgd->auth_data = auth_data; | |
af6b6374 | 4510 | |
7b119dc0 JB |
4511 | if (ifmgd->associated) { |
4512 | u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN]; | |
4513 | ||
4514 | ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, | |
4515 | WLAN_REASON_UNSPECIFIED, | |
4516 | false, frame_buf); | |
4517 | ||
a90faa9d EG |
4518 | ieee80211_report_disconnect(sdata, frame_buf, |
4519 | sizeof(frame_buf), true, | |
4520 | WLAN_REASON_UNSPECIFIED); | |
7b119dc0 | 4521 | } |
af6b6374 | 4522 | |
bdcbd8e0 | 4523 | sdata_info(sdata, "authenticate with %pM\n", req->bss->bssid); |
e5b900d2 | 4524 | |
c1041f10 | 4525 | err = ieee80211_prep_connection(sdata, req->bss, false, false); |
a1cf775d | 4526 | if (err) |
66e67e41 | 4527 | goto err_clear; |
af6b6374 | 4528 | |
46cad4b7 | 4529 | err = ieee80211_auth(sdata); |
66e67e41 | 4530 | if (err) { |
66e67e41 JB |
4531 | sta_info_destroy_addr(sdata, req->bss->bssid); |
4532 | goto err_clear; | |
4533 | } | |
4534 | ||
4535 | /* hold our own reference */ | |
5b112d3d | 4536 | cfg80211_ref_bss(local->hw.wiphy, auth_data->bss); |
8d61ffa5 | 4537 | return 0; |
66e67e41 JB |
4538 | |
4539 | err_clear: | |
c84a67a2 | 4540 | eth_zero_addr(ifmgd->bssid); |
3d2abdfd | 4541 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID); |
66e67e41 | 4542 | ifmgd->auth_data = NULL; |
d01f858c MK |
4543 | mutex_lock(&sdata->local->mtx); |
4544 | ieee80211_vif_release_channel(sdata); | |
4545 | mutex_unlock(&sdata->local->mtx); | |
66e67e41 JB |
4546 | err_free: |
4547 | kfree(auth_data); | |
66e67e41 | 4548 | return err; |
af6b6374 JB |
4549 | } |
4550 | ||
77fdaa12 JB |
4551 | int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, |
4552 | struct cfg80211_assoc_request *req) | |
f0706e82 | 4553 | { |
66e67e41 | 4554 | struct ieee80211_local *local = sdata->local; |
77fdaa12 | 4555 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
0c1ad2ca | 4556 | struct ieee80211_bss *bss = (void *)req->bss->priv; |
66e67e41 | 4557 | struct ieee80211_mgd_assoc_data *assoc_data; |
c65dd147 | 4558 | const struct cfg80211_bss_ies *beacon_ies; |
4e74bfdb | 4559 | struct ieee80211_supported_band *sband; |
b08fbbd8 | 4560 | const u8 *ssidie, *ht_ie, *vht_ie; |
2a33bee2 | 4561 | int i, err; |
c1041f10 | 4562 | bool override = false; |
f0706e82 | 4563 | |
66e67e41 JB |
4564 | assoc_data = kzalloc(sizeof(*assoc_data) + req->ie_len, GFP_KERNEL); |
4565 | if (!assoc_data) | |
4566 | return -ENOMEM; | |
4567 | ||
9caf0364 JB |
4568 | rcu_read_lock(); |
4569 | ssidie = ieee80211_bss_get_ie(req->bss, WLAN_EID_SSID); | |
4570 | if (!ssidie) { | |
4571 | rcu_read_unlock(); | |
4572 | kfree(assoc_data); | |
4573 | return -EINVAL; | |
4574 | } | |
4575 | memcpy(assoc_data->ssid, ssidie + 2, ssidie[1]); | |
4576 | assoc_data->ssid_len = ssidie[1]; | |
4577 | rcu_read_unlock(); | |
4578 | ||
7b119dc0 JB |
4579 | if (ifmgd->associated) { |
4580 | u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN]; | |
4581 | ||
4582 | ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, | |
4583 | WLAN_REASON_UNSPECIFIED, | |
4584 | false, frame_buf); | |
4585 | ||
a90faa9d EG |
4586 | ieee80211_report_disconnect(sdata, frame_buf, |
4587 | sizeof(frame_buf), true, | |
4588 | WLAN_REASON_UNSPECIFIED); | |
7b119dc0 | 4589 | } |
66e67e41 JB |
4590 | |
4591 | if (ifmgd->auth_data && !ifmgd->auth_data->done) { | |
4592 | err = -EBUSY; | |
4593 | goto err_free; | |
af6b6374 | 4594 | } |
77fdaa12 | 4595 | |
66e67e41 JB |
4596 | if (ifmgd->assoc_data) { |
4597 | err = -EBUSY; | |
4598 | goto err_free; | |
4599 | } | |
77fdaa12 | 4600 | |
66e67e41 JB |
4601 | if (ifmgd->auth_data) { |
4602 | bool match; | |
4603 | ||
4604 | /* keep sta info, bssid if matching */ | |
b203ca39 | 4605 | match = ether_addr_equal(ifmgd->bssid, req->bss->bssid); |
66e67e41 | 4606 | ieee80211_destroy_auth_data(sdata, match); |
2a33bee2 GE |
4607 | } |
4608 | ||
66e67e41 | 4609 | /* prepare assoc data */ |
095d81ce | 4610 | |
d8ec4433 JO |
4611 | ifmgd->beacon_crc_valid = false; |
4612 | ||
095d81ce JB |
4613 | assoc_data->wmm = bss->wmm_used && |
4614 | (local->hw.queues >= IEEE80211_NUM_ACS); | |
095d81ce | 4615 | |
de5036aa JB |
4616 | /* |
4617 | * IEEE802.11n does not allow TKIP/WEP as pairwise ciphers in HT mode. | |
4618 | * We still associate in non-HT mode (11a/b/g) if any one of these | |
4619 | * ciphers is configured as pairwise. | |
4620 | * We can set this to true for non-11n hardware, that'll be checked | |
4621 | * separately along with the peer capabilities. | |
4622 | */ | |
1c4cb928 | 4623 | for (i = 0; i < req->crypto.n_ciphers_pairwise; i++) { |
77fdaa12 JB |
4624 | if (req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_WEP40 || |
4625 | req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_TKIP || | |
1c4cb928 | 4626 | req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_WEP104) { |
a8243b72 | 4627 | ifmgd->flags |= IEEE80211_STA_DISABLE_HT; |
d545daba | 4628 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; |
1c4cb928 | 4629 | netdev_info(sdata->dev, |
d545daba | 4630 | "disabling HT/VHT due to WEP/TKIP use\n"); |
1c4cb928 JB |
4631 | } |
4632 | } | |
77fdaa12 | 4633 | |
4e74bfdb JB |
4634 | /* Also disable HT if we don't support it or the AP doesn't use WMM */ |
4635 | sband = local->hw.wiphy->bands[req->bss->channel->band]; | |
4636 | if (!sband->ht_cap.ht_supported || | |
095d81ce JB |
4637 | local->hw.queues < IEEE80211_NUM_ACS || !bss->wmm_used || |
4638 | ifmgd->flags & IEEE80211_STA_DISABLE_WMM) { | |
a8243b72 | 4639 | ifmgd->flags |= IEEE80211_STA_DISABLE_HT; |
095d81ce JB |
4640 | if (!bss->wmm_used && |
4641 | !(ifmgd->flags & IEEE80211_STA_DISABLE_WMM)) | |
1b49de26 JB |
4642 | netdev_info(sdata->dev, |
4643 | "disabling HT as WMM/QoS is not supported by the AP\n"); | |
1c4cb928 | 4644 | } |
4e74bfdb | 4645 | |
d545daba MP |
4646 | /* disable VHT if we don't support it or the AP doesn't use WMM */ |
4647 | if (!sband->vht_cap.vht_supported || | |
095d81ce JB |
4648 | local->hw.queues < IEEE80211_NUM_ACS || !bss->wmm_used || |
4649 | ifmgd->flags & IEEE80211_STA_DISABLE_WMM) { | |
d545daba | 4650 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; |
095d81ce JB |
4651 | if (!bss->wmm_used && |
4652 | !(ifmgd->flags & IEEE80211_STA_DISABLE_WMM)) | |
1b49de26 JB |
4653 | netdev_info(sdata->dev, |
4654 | "disabling VHT as WMM/QoS is not supported by the AP\n"); | |
d545daba MP |
4655 | } |
4656 | ||
ef96a842 BG |
4657 | memcpy(&ifmgd->ht_capa, &req->ht_capa, sizeof(ifmgd->ht_capa)); |
4658 | memcpy(&ifmgd->ht_capa_mask, &req->ht_capa_mask, | |
4659 | sizeof(ifmgd->ht_capa_mask)); | |
4660 | ||
dd5ecfea JB |
4661 | memcpy(&ifmgd->vht_capa, &req->vht_capa, sizeof(ifmgd->vht_capa)); |
4662 | memcpy(&ifmgd->vht_capa_mask, &req->vht_capa_mask, | |
4663 | sizeof(ifmgd->vht_capa_mask)); | |
4664 | ||
77fdaa12 | 4665 | if (req->ie && req->ie_len) { |
66e67e41 JB |
4666 | memcpy(assoc_data->ie, req->ie, req->ie_len); |
4667 | assoc_data->ie_len = req->ie_len; | |
4668 | } | |
f679f65d | 4669 | |
66e67e41 | 4670 | assoc_data->bss = req->bss; |
f679f65d | 4671 | |
af6b6374 JB |
4672 | if (ifmgd->req_smps == IEEE80211_SMPS_AUTOMATIC) { |
4673 | if (ifmgd->powersave) | |
04ecd257 | 4674 | sdata->smps_mode = IEEE80211_SMPS_DYNAMIC; |
af6b6374 | 4675 | else |
04ecd257 | 4676 | sdata->smps_mode = IEEE80211_SMPS_OFF; |
af6b6374 | 4677 | } else |
04ecd257 | 4678 | sdata->smps_mode = ifmgd->req_smps; |
af6b6374 | 4679 | |
66e67e41 | 4680 | assoc_data->capability = req->bss->capability; |
66e67e41 JB |
4681 | assoc_data->supp_rates = bss->supp_rates; |
4682 | assoc_data->supp_rates_len = bss->supp_rates_len; | |
9dde6423 | 4683 | |
9caf0364 | 4684 | rcu_read_lock(); |
9dde6423 JB |
4685 | ht_ie = ieee80211_bss_get_ie(req->bss, WLAN_EID_HT_OPERATION); |
4686 | if (ht_ie && ht_ie[1] >= sizeof(struct ieee80211_ht_operation)) | |
4687 | assoc_data->ap_ht_param = | |
4688 | ((struct ieee80211_ht_operation *)(ht_ie + 2))->ht_param; | |
4689 | else | |
a8243b72 | 4690 | ifmgd->flags |= IEEE80211_STA_DISABLE_HT; |
b08fbbd8 JB |
4691 | vht_ie = ieee80211_bss_get_ie(req->bss, WLAN_EID_VHT_CAPABILITY); |
4692 | if (vht_ie && vht_ie[1] >= sizeof(struct ieee80211_vht_cap)) | |
4693 | memcpy(&assoc_data->ap_vht_cap, vht_ie + 2, | |
4694 | sizeof(struct ieee80211_vht_cap)); | |
4695 | else | |
4696 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; | |
9caf0364 | 4697 | rcu_read_unlock(); |
63f170e0 | 4698 | |
848955cc | 4699 | if (WARN((sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_UAPSD) && |
30686bf7 | 4700 | ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK), |
848955cc JB |
4701 | "U-APSD not supported with HW_PS_NULLFUNC_STACK\n")) |
4702 | sdata->vif.driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD; | |
4703 | ||
ab13315a | 4704 | if (bss->wmm_used && bss->uapsd_supported && |
848955cc | 4705 | (sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_UAPSD)) { |
76f0303d | 4706 | assoc_data->uapsd = true; |
ab13315a KV |
4707 | ifmgd->flags |= IEEE80211_STA_UAPSD_ENABLED; |
4708 | } else { | |
76f0303d | 4709 | assoc_data->uapsd = false; |
ab13315a KV |
4710 | ifmgd->flags &= ~IEEE80211_STA_UAPSD_ENABLED; |
4711 | } | |
4712 | ||
77fdaa12 | 4713 | if (req->prev_bssid) |
66e67e41 | 4714 | memcpy(assoc_data->prev_bssid, req->prev_bssid, ETH_ALEN); |
77fdaa12 JB |
4715 | |
4716 | if (req->use_mfp) { | |
4717 | ifmgd->mfp = IEEE80211_MFP_REQUIRED; | |
4718 | ifmgd->flags |= IEEE80211_STA_MFP_ENABLED; | |
4719 | } else { | |
4720 | ifmgd->mfp = IEEE80211_MFP_DISABLED; | |
4721 | ifmgd->flags &= ~IEEE80211_STA_MFP_ENABLED; | |
4722 | } | |
4723 | ||
cd2f5dd7 AK |
4724 | if (req->flags & ASSOC_REQ_USE_RRM) |
4725 | ifmgd->flags |= IEEE80211_STA_ENABLE_RRM; | |
4726 | else | |
4727 | ifmgd->flags &= ~IEEE80211_STA_ENABLE_RRM; | |
4728 | ||
77fdaa12 JB |
4729 | if (req->crypto.control_port) |
4730 | ifmgd->flags |= IEEE80211_STA_CONTROL_PORT; | |
4731 | else | |
4732 | ifmgd->flags &= ~IEEE80211_STA_CONTROL_PORT; | |
4733 | ||
a621fa4d JB |
4734 | sdata->control_port_protocol = req->crypto.control_port_ethertype; |
4735 | sdata->control_port_no_encrypt = req->crypto.control_port_no_encrypt; | |
2475b1cc MS |
4736 | sdata->encrypt_headroom = ieee80211_cs_headroom(local, &req->crypto, |
4737 | sdata->vif.type); | |
a621fa4d | 4738 | |
66e67e41 JB |
4739 | /* kick off associate process */ |
4740 | ||
4741 | ifmgd->assoc_data = assoc_data; | |
826262c3 | 4742 | ifmgd->dtim_period = 0; |
989c6505 | 4743 | ifmgd->have_beacon = false; |
66e67e41 | 4744 | |
c1041f10 CRI |
4745 | /* override HT/VHT configuration only if the AP and we support it */ |
4746 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) { | |
4747 | struct ieee80211_sta_ht_cap sta_ht_cap; | |
4748 | ||
4749 | if (req->flags & ASSOC_REQ_DISABLE_HT) | |
4750 | override = true; | |
4751 | ||
4752 | memcpy(&sta_ht_cap, &sband->ht_cap, sizeof(sta_ht_cap)); | |
4753 | ieee80211_apply_htcap_overrides(sdata, &sta_ht_cap); | |
4754 | ||
4755 | /* check for 40 MHz disable override */ | |
4756 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_40MHZ) && | |
4757 | sband->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 && | |
4758 | !(sta_ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40)) | |
4759 | override = true; | |
4760 | ||
4761 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) && | |
4762 | req->flags & ASSOC_REQ_DISABLE_VHT) | |
4763 | override = true; | |
4764 | } | |
4765 | ||
4766 | if (req->flags & ASSOC_REQ_DISABLE_HT) { | |
4767 | ifmgd->flags |= IEEE80211_STA_DISABLE_HT; | |
4768 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; | |
4769 | } | |
4770 | ||
4771 | if (req->flags & ASSOC_REQ_DISABLE_VHT) | |
4772 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; | |
4773 | ||
4774 | err = ieee80211_prep_connection(sdata, req->bss, true, override); | |
a1cf775d JB |
4775 | if (err) |
4776 | goto err_clear; | |
66e67e41 | 4777 | |
c65dd147 EG |
4778 | rcu_read_lock(); |
4779 | beacon_ies = rcu_dereference(req->bss->beacon_ies); | |
826262c3 | 4780 | |
30686bf7 | 4781 | if (ieee80211_hw_check(&sdata->local->hw, NEED_DTIM_BEFORE_ASSOC) && |
c65dd147 EG |
4782 | !beacon_ies) { |
4783 | /* | |
4784 | * Wait up to one beacon interval ... | |
4785 | * should this be more if we miss one? | |
4786 | */ | |
4787 | sdata_info(sdata, "waiting for beacon from %pM\n", | |
4788 | ifmgd->bssid); | |
4789 | assoc_data->timeout = TU_TO_EXP_TIME(req->bss->beacon_interval); | |
89afe614 | 4790 | assoc_data->timeout_started = true; |
c65dd147 EG |
4791 | assoc_data->need_beacon = true; |
4792 | } else if (beacon_ies) { | |
4793 | const u8 *tim_ie = cfg80211_find_ie(WLAN_EID_TIM, | |
4794 | beacon_ies->data, | |
4795 | beacon_ies->len); | |
ef429dad JB |
4796 | u8 dtim_count = 0; |
4797 | ||
c65dd147 EG |
4798 | if (tim_ie && tim_ie[1] >= sizeof(struct ieee80211_tim_ie)) { |
4799 | const struct ieee80211_tim_ie *tim; | |
4800 | tim = (void *)(tim_ie + 2); | |
4801 | ifmgd->dtim_period = tim->dtim_period; | |
ef429dad | 4802 | dtim_count = tim->dtim_count; |
826262c3 | 4803 | } |
989c6505 | 4804 | ifmgd->have_beacon = true; |
66e67e41 | 4805 | assoc_data->timeout = jiffies; |
89afe614 | 4806 | assoc_data->timeout_started = true; |
ef429dad | 4807 | |
30686bf7 | 4808 | if (ieee80211_hw_check(&local->hw, TIMING_BEACON_ONLY)) { |
ef429dad JB |
4809 | sdata->vif.bss_conf.sync_tsf = beacon_ies->tsf; |
4810 | sdata->vif.bss_conf.sync_device_ts = | |
4811 | bss->device_ts_beacon; | |
4812 | sdata->vif.bss_conf.sync_dtim_count = dtim_count; | |
4813 | } | |
c65dd147 EG |
4814 | } else { |
4815 | assoc_data->timeout = jiffies; | |
89afe614 | 4816 | assoc_data->timeout_started = true; |
66e67e41 | 4817 | } |
c65dd147 EG |
4818 | rcu_read_unlock(); |
4819 | ||
8d61ffa5 | 4820 | run_again(sdata, assoc_data->timeout); |
66e67e41 | 4821 | |
fcff4f10 PS |
4822 | if (bss->corrupt_data) { |
4823 | char *corrupt_type = "data"; | |
4824 | if (bss->corrupt_data & IEEE80211_BSS_CORRUPT_BEACON) { | |
4825 | if (bss->corrupt_data & | |
4826 | IEEE80211_BSS_CORRUPT_PROBE_RESP) | |
4827 | corrupt_type = "beacon and probe response"; | |
4828 | else | |
4829 | corrupt_type = "beacon"; | |
4830 | } else if (bss->corrupt_data & IEEE80211_BSS_CORRUPT_PROBE_RESP) | |
4831 | corrupt_type = "probe response"; | |
bdcbd8e0 JB |
4832 | sdata_info(sdata, "associating with AP with corrupt %s\n", |
4833 | corrupt_type); | |
fcff4f10 PS |
4834 | } |
4835 | ||
8d61ffa5 | 4836 | return 0; |
66e67e41 | 4837 | err_clear: |
c84a67a2 | 4838 | eth_zero_addr(ifmgd->bssid); |
3d2abdfd | 4839 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID); |
66e67e41 JB |
4840 | ifmgd->assoc_data = NULL; |
4841 | err_free: | |
4842 | kfree(assoc_data); | |
66e67e41 | 4843 | return err; |
f0706e82 JB |
4844 | } |
4845 | ||
77fdaa12 | 4846 | int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, |
63c9c5e7 | 4847 | struct cfg80211_deauth_request *req) |
f0706e82 | 4848 | { |
46900298 | 4849 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
6ae16775 | 4850 | u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN]; |
6863255b | 4851 | bool tx = !req->local_state_change; |
f0706e82 | 4852 | |
c9c3a060 JB |
4853 | if (ifmgd->auth_data && |
4854 | ether_addr_equal(ifmgd->auth_data->bss->bssid, req->bssid)) { | |
4855 | sdata_info(sdata, | |
4856 | "aborting authentication with %pM by local choice (Reason: %u=%s)\n", | |
4857 | req->bssid, req->reason_code, | |
4858 | ieee80211_get_reason_code_string(req->reason_code)); | |
0ff71613 | 4859 | |
8c7d857c | 4860 | drv_mgd_prepare_tx(sdata->local, sdata); |
37ad3888 JB |
4861 | ieee80211_send_deauth_disassoc(sdata, req->bssid, |
4862 | IEEE80211_STYPE_DEAUTH, | |
6863255b | 4863 | req->reason_code, tx, |
37ad3888 | 4864 | frame_buf); |
86552017 | 4865 | ieee80211_destroy_auth_data(sdata, false); |
a90faa9d EG |
4866 | ieee80211_report_disconnect(sdata, frame_buf, |
4867 | sizeof(frame_buf), true, | |
4868 | req->reason_code); | |
86552017 | 4869 | |
c9c3a060 | 4870 | return 0; |
8c7d857c EG |
4871 | } |
4872 | ||
a64cba3c AO |
4873 | if (ifmgd->assoc_data && |
4874 | ether_addr_equal(ifmgd->assoc_data->bss->bssid, req->bssid)) { | |
4875 | sdata_info(sdata, | |
4876 | "aborting association with %pM by local choice (Reason: %u=%s)\n", | |
4877 | req->bssid, req->reason_code, | |
4878 | ieee80211_get_reason_code_string(req->reason_code)); | |
4879 | ||
4880 | drv_mgd_prepare_tx(sdata->local, sdata); | |
4881 | ieee80211_send_deauth_disassoc(sdata, req->bssid, | |
4882 | IEEE80211_STYPE_DEAUTH, | |
4883 | req->reason_code, tx, | |
4884 | frame_buf); | |
4885 | ieee80211_destroy_assoc_data(sdata, false); | |
4886 | ieee80211_report_disconnect(sdata, frame_buf, | |
4887 | sizeof(frame_buf), true, | |
4888 | req->reason_code); | |
4889 | return 0; | |
4890 | } | |
4891 | ||
86552017 JB |
4892 | if (ifmgd->associated && |
4893 | ether_addr_equal(ifmgd->associated->bssid, req->bssid)) { | |
c9c3a060 JB |
4894 | sdata_info(sdata, |
4895 | "deauthenticating from %pM by local choice (Reason: %u=%s)\n", | |
4896 | req->bssid, req->reason_code, | |
4897 | ieee80211_get_reason_code_string(req->reason_code)); | |
4898 | ||
86552017 JB |
4899 | ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, |
4900 | req->reason_code, tx, frame_buf); | |
a90faa9d EG |
4901 | ieee80211_report_disconnect(sdata, frame_buf, |
4902 | sizeof(frame_buf), true, | |
4903 | req->reason_code); | |
c9c3a060 JB |
4904 | return 0; |
4905 | } | |
86552017 | 4906 | |
c9c3a060 | 4907 | return -ENOTCONN; |
f0706e82 | 4908 | } |
84363e6e | 4909 | |
77fdaa12 | 4910 | int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, |
63c9c5e7 | 4911 | struct cfg80211_disassoc_request *req) |
9c6bd790 | 4912 | { |
77fdaa12 | 4913 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
e69e95db | 4914 | u8 bssid[ETH_ALEN]; |
6ae16775 | 4915 | u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN]; |
9c6bd790 | 4916 | |
8d8b261a JB |
4917 | /* |
4918 | * cfg80211 should catch this ... but it's racy since | |
4919 | * we can receive a disassoc frame, process it, hand it | |
4920 | * to cfg80211 while that's in a locked section already | |
4921 | * trying to tell us that the user wants to disconnect. | |
4922 | */ | |
8d61ffa5 | 4923 | if (ifmgd->associated != req->bss) |
77fdaa12 | 4924 | return -ENOLINK; |
77fdaa12 | 4925 | |
bdcbd8e0 | 4926 | sdata_info(sdata, |
dfa1ad29 CO |
4927 | "disassociating from %pM by local choice (Reason: %u=%s)\n", |
4928 | req->bss->bssid, req->reason_code, ieee80211_get_reason_code_string(req->reason_code)); | |
0ff71613 | 4929 | |
e69e95db | 4930 | memcpy(bssid, req->bss->bssid, ETH_ALEN); |
37ad3888 JB |
4931 | ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DISASSOC, |
4932 | req->reason_code, !req->local_state_change, | |
4933 | frame_buf); | |
10f644a4 | 4934 | |
a90faa9d EG |
4935 | ieee80211_report_disconnect(sdata, frame_buf, sizeof(frame_buf), true, |
4936 | req->reason_code); | |
bc83b681 | 4937 | |
10f644a4 JB |
4938 | return 0; |
4939 | } | |
026331c4 | 4940 | |
afa762f6 | 4941 | void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata) |
54e4ffb2 JB |
4942 | { |
4943 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
4944 | ||
49921859 BG |
4945 | /* |
4946 | * Make sure some work items will not run after this, | |
4947 | * they will not do anything but might not have been | |
4948 | * cancelled when disconnecting. | |
4949 | */ | |
4950 | cancel_work_sync(&ifmgd->monitor_work); | |
4951 | cancel_work_sync(&ifmgd->beacon_connection_loss_work); | |
4952 | cancel_work_sync(&ifmgd->request_smps_work); | |
4953 | cancel_work_sync(&ifmgd->csa_connection_drop_work); | |
4954 | cancel_work_sync(&ifmgd->chswitch_work); | |
81dd2b88 | 4955 | cancel_delayed_work_sync(&ifmgd->tdls_peer_del_work); |
49921859 | 4956 | |
8d61ffa5 | 4957 | sdata_lock(sdata); |
959867fa JB |
4958 | if (ifmgd->assoc_data) { |
4959 | struct cfg80211_bss *bss = ifmgd->assoc_data->bss; | |
54e4ffb2 | 4960 | ieee80211_destroy_assoc_data(sdata, false); |
959867fa JB |
4961 | cfg80211_assoc_timeout(sdata->dev, bss); |
4962 | } | |
54e4ffb2 JB |
4963 | if (ifmgd->auth_data) |
4964 | ieee80211_destroy_auth_data(sdata, false); | |
1277b4a9 LK |
4965 | spin_lock_bh(&ifmgd->teardown_lock); |
4966 | if (ifmgd->teardown_skb) { | |
4967 | kfree_skb(ifmgd->teardown_skb); | |
4968 | ifmgd->teardown_skb = NULL; | |
4969 | ifmgd->orig_teardown_skb = NULL; | |
4970 | } | |
4971 | spin_unlock_bh(&ifmgd->teardown_lock); | |
54e4ffb2 | 4972 | del_timer_sync(&ifmgd->timer); |
8d61ffa5 | 4973 | sdata_unlock(sdata); |
54e4ffb2 JB |
4974 | } |
4975 | ||
a97c13c3 JO |
4976 | void ieee80211_cqm_rssi_notify(struct ieee80211_vif *vif, |
4977 | enum nl80211_cqm_rssi_threshold_event rssi_event, | |
4978 | gfp_t gfp) | |
4979 | { | |
4980 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
4981 | ||
b5878a2d JB |
4982 | trace_api_cqm_rssi_notify(sdata, rssi_event); |
4983 | ||
a97c13c3 JO |
4984 | cfg80211_cqm_rssi_notify(sdata->dev, rssi_event, gfp); |
4985 | } | |
4986 | EXPORT_SYMBOL(ieee80211_cqm_rssi_notify); | |
98f03342 JB |
4987 | |
4988 | void ieee80211_cqm_beacon_loss_notify(struct ieee80211_vif *vif, gfp_t gfp) | |
4989 | { | |
4990 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
4991 | ||
4992 | trace_api_cqm_beacon_loss_notify(sdata->local, sdata); | |
4993 | ||
4994 | cfg80211_cqm_beacon_loss_notify(sdata->dev, gfp); | |
4995 | } | |
4996 | EXPORT_SYMBOL(ieee80211_cqm_beacon_loss_notify); |