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Commit | Line | Data |
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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 |
f0706e82 JB |
9 | * |
10 | * This program is free software; you can redistribute it and/or modify | |
11 | * it under the terms of the GNU General Public License version 2 as | |
12 | * published by the Free Software Foundation. | |
13 | */ | |
14 | ||
5b323edb | 15 | #include <linux/delay.h> |
f0706e82 JB |
16 | #include <linux/if_ether.h> |
17 | #include <linux/skbuff.h> | |
f0706e82 | 18 | #include <linux/if_arp.h> |
f0706e82 | 19 | #include <linux/etherdevice.h> |
d9b93842 | 20 | #include <linux/moduleparam.h> |
d0709a65 | 21 | #include <linux/rtnetlink.h> |
e8db0be1 | 22 | #include <linux/pm_qos.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 | |
17e4ec14 JM |
83 | /* |
84 | * Weight given to the latest Beacon frame when calculating average signal | |
85 | * strength for Beacon frames received in the current BSS. This must be | |
86 | * between 1 and 15. | |
87 | */ | |
88 | #define IEEE80211_SIGNAL_AVE_WEIGHT 3 | |
89 | ||
391a200a JM |
90 | /* |
91 | * How many Beacon frames need to have been used in average signal strength | |
92 | * before starting to indicate signal change events. | |
93 | */ | |
94 | #define IEEE80211_SIGNAL_AVE_MIN_COUNT 4 | |
95 | ||
ca386f31 JB |
96 | /* |
97 | * We can have multiple work items (and connection probing) | |
98 | * scheduling this timer, but we need to take care to only | |
99 | * reschedule it when it should fire _earlier_ than it was | |
100 | * asked for before, or if it's not pending right now. This | |
101 | * function ensures that. Note that it then is required to | |
102 | * run this function for all timeouts after the first one | |
103 | * has happened -- the work that runs from this timer will | |
104 | * do that. | |
105 | */ | |
8d61ffa5 JB |
106 | static void run_again(struct ieee80211_sub_if_data *sdata, |
107 | unsigned long timeout) | |
ca386f31 | 108 | { |
8d61ffa5 | 109 | sdata_assert_lock(sdata); |
ca386f31 | 110 | |
8d61ffa5 JB |
111 | if (!timer_pending(&sdata->u.mgd.timer) || |
112 | time_before(timeout, sdata->u.mgd.timer.expires)) | |
113 | mod_timer(&sdata->u.mgd.timer, timeout); | |
ca386f31 JB |
114 | } |
115 | ||
d3a910a8 | 116 | void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata) |
b291ba11 | 117 | { |
c1288b12 | 118 | if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER) |
b291ba11 JB |
119 | return; |
120 | ||
7eeff74c JB |
121 | if (sdata->local->hw.flags & IEEE80211_HW_CONNECTION_MONITOR) |
122 | return; | |
123 | ||
b291ba11 | 124 | mod_timer(&sdata->u.mgd.bcn_mon_timer, |
7ccc8bd7 | 125 | round_jiffies_up(jiffies + sdata->u.mgd.beacon_timeout)); |
b291ba11 JB |
126 | } |
127 | ||
be099e82 LR |
128 | void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata) |
129 | { | |
0c699c3a LR |
130 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
131 | ||
8628172f SG |
132 | if (unlikely(!sdata->u.mgd.associated)) |
133 | return; | |
134 | ||
448cd2e2 EP |
135 | ifmgd->probe_send_count = 0; |
136 | ||
be099e82 LR |
137 | if (sdata->local->hw.flags & IEEE80211_HW_CONNECTION_MONITOR) |
138 | return; | |
139 | ||
140 | mod_timer(&sdata->u.mgd.conn_mon_timer, | |
141 | round_jiffies_up(jiffies + IEEE80211_CONNECTION_IDLE_TIME)); | |
142 | } | |
143 | ||
5484e237 | 144 | static int ecw2cw(int ecw) |
60f8b39c | 145 | { |
5484e237 | 146 | return (1 << ecw) - 1; |
60f8b39c JB |
147 | } |
148 | ||
6565ec9b JB |
149 | static u32 |
150 | ieee80211_determine_chantype(struct ieee80211_sub_if_data *sdata, | |
151 | struct ieee80211_supported_band *sband, | |
152 | struct ieee80211_channel *channel, | |
53b954ee | 153 | const struct ieee80211_ht_cap *ht_cap, |
6565ec9b JB |
154 | const struct ieee80211_ht_operation *ht_oper, |
155 | const struct ieee80211_vht_operation *vht_oper, | |
5cdaed1e | 156 | struct cfg80211_chan_def *chandef, bool tracking) |
6565ec9b | 157 | { |
5cdaed1e | 158 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
6565ec9b | 159 | struct cfg80211_chan_def vht_chandef; |
179b8fc7 | 160 | struct ieee80211_sta_ht_cap sta_ht_cap; |
6565ec9b JB |
161 | u32 ht_cfreq, ret; |
162 | ||
179b8fc7 CRI |
163 | memcpy(&sta_ht_cap, &sband->ht_cap, sizeof(sta_ht_cap)); |
164 | ieee80211_apply_htcap_overrides(sdata, &sta_ht_cap); | |
165 | ||
6565ec9b JB |
166 | chandef->chan = channel; |
167 | chandef->width = NL80211_CHAN_WIDTH_20_NOHT; | |
168 | chandef->center_freq1 = channel->center_freq; | |
169 | chandef->center_freq2 = 0; | |
170 | ||
179b8fc7 | 171 | if (!ht_cap || !ht_oper || !sta_ht_cap.ht_supported) { |
6565ec9b JB |
172 | ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT; |
173 | goto out; | |
174 | } | |
175 | ||
176 | chandef->width = NL80211_CHAN_WIDTH_20; | |
177 | ||
53b954ee EP |
178 | if (!(ht_cap->cap_info & |
179 | cpu_to_le16(IEEE80211_HT_CAP_SUP_WIDTH_20_40))) { | |
f3000e1b | 180 | ret = IEEE80211_STA_DISABLE_40MHZ; |
7e6225a1 | 181 | vht_chandef = *chandef; |
53b954ee EP |
182 | goto out; |
183 | } | |
184 | ||
6565ec9b JB |
185 | ht_cfreq = ieee80211_channel_to_frequency(ht_oper->primary_chan, |
186 | channel->band); | |
187 | /* check that channel matches the right operating channel */ | |
5cdaed1e | 188 | if (!tracking && channel->center_freq != ht_cfreq) { |
6565ec9b JB |
189 | /* |
190 | * It's possible that some APs are confused here; | |
191 | * Netgear WNDR3700 sometimes reports 4 higher than | |
192 | * the actual channel in association responses, but | |
193 | * since we look at probe response/beacon data here | |
194 | * it should be OK. | |
195 | */ | |
5cdaed1e JB |
196 | sdata_info(sdata, |
197 | "Wrong control channel: center-freq: %d ht-cfreq: %d ht->primary_chan: %d band: %d - Disabling HT\n", | |
198 | channel->center_freq, ht_cfreq, | |
199 | ht_oper->primary_chan, channel->band); | |
6565ec9b JB |
200 | ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT; |
201 | goto out; | |
202 | } | |
203 | ||
204 | /* check 40 MHz support, if we have it */ | |
179b8fc7 | 205 | if (sta_ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40) { |
6565ec9b JB |
206 | switch (ht_oper->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) { |
207 | case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: | |
208 | chandef->width = NL80211_CHAN_WIDTH_40; | |
209 | chandef->center_freq1 += 10; | |
210 | break; | |
211 | case IEEE80211_HT_PARAM_CHA_SEC_BELOW: | |
212 | chandef->width = NL80211_CHAN_WIDTH_40; | |
213 | chandef->center_freq1 -= 10; | |
214 | break; | |
215 | } | |
216 | } else { | |
217 | /* 40 MHz (and 80 MHz) must be supported for VHT */ | |
218 | ret = IEEE80211_STA_DISABLE_VHT; | |
85220d71 JB |
219 | /* also mark 40 MHz disabled */ |
220 | ret |= IEEE80211_STA_DISABLE_40MHZ; | |
6565ec9b JB |
221 | goto out; |
222 | } | |
223 | ||
224 | if (!vht_oper || !sband->vht_cap.vht_supported) { | |
225 | ret = IEEE80211_STA_DISABLE_VHT; | |
226 | goto out; | |
227 | } | |
228 | ||
229 | vht_chandef.chan = channel; | |
230 | vht_chandef.center_freq1 = | |
231 | ieee80211_channel_to_frequency(vht_oper->center_freq_seg1_idx, | |
232 | channel->band); | |
233 | vht_chandef.center_freq2 = 0; | |
234 | ||
6565ec9b JB |
235 | switch (vht_oper->chan_width) { |
236 | case IEEE80211_VHT_CHANWIDTH_USE_HT: | |
237 | vht_chandef.width = chandef->width; | |
cb664981 | 238 | vht_chandef.center_freq1 = chandef->center_freq1; |
6565ec9b JB |
239 | break; |
240 | case IEEE80211_VHT_CHANWIDTH_80MHZ: | |
241 | vht_chandef.width = NL80211_CHAN_WIDTH_80; | |
242 | break; | |
243 | case IEEE80211_VHT_CHANWIDTH_160MHZ: | |
244 | vht_chandef.width = NL80211_CHAN_WIDTH_160; | |
245 | break; | |
246 | case IEEE80211_VHT_CHANWIDTH_80P80MHZ: | |
247 | vht_chandef.width = NL80211_CHAN_WIDTH_80P80; | |
6553bf04 JB |
248 | vht_chandef.center_freq2 = |
249 | ieee80211_channel_to_frequency( | |
250 | vht_oper->center_freq_seg2_idx, | |
251 | channel->band); | |
6565ec9b JB |
252 | break; |
253 | default: | |
5cdaed1e | 254 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) |
30eb1dc2 JB |
255 | sdata_info(sdata, |
256 | "AP VHT operation IE has invalid channel width (%d), disable VHT\n", | |
257 | vht_oper->chan_width); | |
6565ec9b JB |
258 | ret = IEEE80211_STA_DISABLE_VHT; |
259 | goto out; | |
260 | } | |
261 | ||
262 | if (!cfg80211_chandef_valid(&vht_chandef)) { | |
5cdaed1e | 263 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) |
30eb1dc2 JB |
264 | sdata_info(sdata, |
265 | "AP VHT information is invalid, disable VHT\n"); | |
6565ec9b JB |
266 | ret = IEEE80211_STA_DISABLE_VHT; |
267 | goto out; | |
268 | } | |
269 | ||
270 | if (cfg80211_chandef_identical(chandef, &vht_chandef)) { | |
271 | ret = 0; | |
272 | goto out; | |
273 | } | |
274 | ||
275 | if (!cfg80211_chandef_compatible(chandef, &vht_chandef)) { | |
5cdaed1e | 276 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) |
30eb1dc2 JB |
277 | sdata_info(sdata, |
278 | "AP VHT information doesn't match HT, disable VHT\n"); | |
6565ec9b JB |
279 | ret = IEEE80211_STA_DISABLE_VHT; |
280 | goto out; | |
281 | } | |
282 | ||
283 | *chandef = vht_chandef; | |
284 | ||
285 | ret = 0; | |
286 | ||
287 | out: | |
963a1852 JB |
288 | /* |
289 | * When tracking the current AP, don't do any further checks if the | |
290 | * new chandef is identical to the one we're currently using for the | |
291 | * connection. This keeps us from playing ping-pong with regulatory, | |
292 | * without it the following can happen (for example): | |
293 | * - connect to an AP with 80 MHz, world regdom allows 80 MHz | |
294 | * - AP advertises regdom US | |
295 | * - CRDA loads regdom US with 80 MHz prohibited (old database) | |
296 | * - the code below detects an unsupported channel, downgrades, and | |
297 | * we disconnect from the AP in the caller | |
298 | * - disconnect causes CRDA to reload world regdomain and the game | |
299 | * starts anew. | |
300 | * (see https://bugzilla.kernel.org/show_bug.cgi?id=70881) | |
301 | * | |
302 | * It seems possible that there are still scenarios with CSA or real | |
303 | * bandwidth changes where a this could happen, but those cases are | |
304 | * less common and wouldn't completely prevent using the AP. | |
305 | */ | |
306 | if (tracking && | |
307 | cfg80211_chandef_identical(chandef, &sdata->vif.bss_conf.chandef)) | |
308 | return ret; | |
309 | ||
586e01ed JB |
310 | /* don't print the message below for VHT mismatch if VHT is disabled */ |
311 | if (ret & IEEE80211_STA_DISABLE_VHT) | |
312 | vht_chandef = *chandef; | |
313 | ||
ddfe49b4 JB |
314 | /* |
315 | * Ignore the DISABLED flag when we're already connected and only | |
316 | * tracking the APs beacon for bandwidth changes - otherwise we | |
317 | * might get disconnected here if we connect to an AP, update our | |
318 | * regulatory information based on the AP's country IE and the | |
319 | * information we have is wrong/outdated and disables the channel | |
320 | * that we're actually using for the connection to the AP. | |
321 | */ | |
6565ec9b | 322 | while (!cfg80211_chandef_usable(sdata->local->hw.wiphy, chandef, |
ddfe49b4 JB |
323 | tracking ? 0 : |
324 | IEEE80211_CHAN_DISABLED)) { | |
6565ec9b JB |
325 | if (WARN_ON(chandef->width == NL80211_CHAN_WIDTH_20_NOHT)) { |
326 | ret = IEEE80211_STA_DISABLE_HT | | |
327 | IEEE80211_STA_DISABLE_VHT; | |
b56e4b85 | 328 | break; |
6565ec9b JB |
329 | } |
330 | ||
e6b7cde4 | 331 | ret |= ieee80211_chandef_downgrade(chandef); |
6565ec9b JB |
332 | } |
333 | ||
5cdaed1e | 334 | if (chandef->width != vht_chandef.width && !tracking) |
6565ec9b JB |
335 | sdata_info(sdata, |
336 | "capabilities/regulatory prevented using AP HT/VHT configuration, downgraded\n"); | |
337 | ||
338 | WARN_ON_ONCE(!cfg80211_chandef_valid(chandef)); | |
339 | return ret; | |
340 | } | |
341 | ||
30eb1dc2 JB |
342 | static int ieee80211_config_bw(struct ieee80211_sub_if_data *sdata, |
343 | struct sta_info *sta, | |
53b954ee | 344 | const struct ieee80211_ht_cap *ht_cap, |
30eb1dc2 JB |
345 | const struct ieee80211_ht_operation *ht_oper, |
346 | const struct ieee80211_vht_operation *vht_oper, | |
347 | const u8 *bssid, u32 *changed) | |
d5522e03 JB |
348 | { |
349 | struct ieee80211_local *local = sdata->local; | |
30eb1dc2 | 350 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
d5522e03 | 351 | struct ieee80211_supported_band *sband; |
55de908a | 352 | struct ieee80211_channel *chan; |
30eb1dc2 | 353 | struct cfg80211_chan_def chandef; |
9ed6bcce | 354 | u16 ht_opmode; |
30eb1dc2 JB |
355 | u32 flags; |
356 | enum ieee80211_sta_rx_bandwidth new_sta_bw; | |
357 | int ret; | |
d5522e03 | 358 | |
30eb1dc2 JB |
359 | /* if HT was/is disabled, don't track any bandwidth changes */ |
360 | if (ifmgd->flags & IEEE80211_STA_DISABLE_HT || !ht_oper) | |
1128958d JB |
361 | return 0; |
362 | ||
30eb1dc2 JB |
363 | /* don't check VHT if we associated as non-VHT station */ |
364 | if (ifmgd->flags & IEEE80211_STA_DISABLE_VHT) | |
365 | vht_oper = NULL; | |
366 | ||
367 | if (WARN_ON_ONCE(!sta)) | |
368 | return -EINVAL; | |
369 | ||
017b45bb AA |
370 | /* |
371 | * if bss configuration changed store the new one - | |
372 | * this may be applicable even if channel is identical | |
373 | */ | |
374 | ht_opmode = le16_to_cpu(ht_oper->operation_mode); | |
375 | if (sdata->vif.bss_conf.ht_operation_mode != ht_opmode) { | |
376 | *changed |= BSS_CHANGED_HT; | |
377 | sdata->vif.bss_conf.ht_operation_mode = ht_opmode; | |
378 | } | |
379 | ||
f2d9330e | 380 | chan = sdata->vif.bss_conf.chandef.chan; |
55de908a | 381 | sband = local->hw.wiphy->bands[chan->band]; |
d5522e03 | 382 | |
30eb1dc2 | 383 | /* calculate new channel (type) based on HT/VHT operation IEs */ |
53b954ee EP |
384 | flags = ieee80211_determine_chantype(sdata, sband, chan, |
385 | ht_cap, ht_oper, vht_oper, | |
386 | &chandef, true); | |
30eb1dc2 JB |
387 | |
388 | /* | |
389 | * Downgrade the new channel if we associated with restricted | |
390 | * capabilities. For example, if we associated as a 20 MHz STA | |
391 | * to a 40 MHz AP (due to regulatory, capabilities or config | |
392 | * reasons) then switching to a 40 MHz channel now won't do us | |
393 | * any good -- we couldn't use it with the AP. | |
394 | */ | |
395 | if (ifmgd->flags & IEEE80211_STA_DISABLE_80P80MHZ && | |
396 | chandef.width == NL80211_CHAN_WIDTH_80P80) | |
e6b7cde4 | 397 | flags |= ieee80211_chandef_downgrade(&chandef); |
30eb1dc2 JB |
398 | if (ifmgd->flags & IEEE80211_STA_DISABLE_160MHZ && |
399 | chandef.width == NL80211_CHAN_WIDTH_160) | |
e6b7cde4 | 400 | flags |= ieee80211_chandef_downgrade(&chandef); |
30eb1dc2 JB |
401 | if (ifmgd->flags & IEEE80211_STA_DISABLE_40MHZ && |
402 | chandef.width > NL80211_CHAN_WIDTH_20) | |
e6b7cde4 | 403 | flags |= ieee80211_chandef_downgrade(&chandef); |
30eb1dc2 JB |
404 | |
405 | if (cfg80211_chandef_identical(&chandef, &sdata->vif.bss_conf.chandef)) | |
406 | return 0; | |
407 | ||
408 | sdata_info(sdata, | |
409 | "AP %pM changed bandwidth, new config is %d MHz, width %d (%d/%d MHz)\n", | |
410 | ifmgd->bssid, chandef.chan->center_freq, chandef.width, | |
411 | chandef.center_freq1, chandef.center_freq2); | |
412 | ||
413 | if (flags != (ifmgd->flags & (IEEE80211_STA_DISABLE_HT | | |
414 | IEEE80211_STA_DISABLE_VHT | | |
415 | IEEE80211_STA_DISABLE_40MHZ | | |
416 | IEEE80211_STA_DISABLE_80P80MHZ | | |
417 | IEEE80211_STA_DISABLE_160MHZ)) || | |
418 | !cfg80211_chandef_valid(&chandef)) { | |
419 | sdata_info(sdata, | |
420 | "AP %pM changed bandwidth in a way we can't support - disconnect\n", | |
421 | ifmgd->bssid); | |
422 | return -EINVAL; | |
423 | } | |
424 | ||
425 | switch (chandef.width) { | |
426 | case NL80211_CHAN_WIDTH_20_NOHT: | |
427 | case NL80211_CHAN_WIDTH_20: | |
428 | new_sta_bw = IEEE80211_STA_RX_BW_20; | |
429 | break; | |
4bf88530 | 430 | case NL80211_CHAN_WIDTH_40: |
30eb1dc2 | 431 | new_sta_bw = IEEE80211_STA_RX_BW_40; |
64f68e5d | 432 | break; |
30eb1dc2 JB |
433 | case NL80211_CHAN_WIDTH_80: |
434 | new_sta_bw = IEEE80211_STA_RX_BW_80; | |
435 | break; | |
436 | case NL80211_CHAN_WIDTH_80P80: | |
437 | case NL80211_CHAN_WIDTH_160: | |
438 | new_sta_bw = IEEE80211_STA_RX_BW_160; | |
64f68e5d | 439 | break; |
30eb1dc2 JB |
440 | default: |
441 | return -EINVAL; | |
64f68e5d | 442 | } |
d5522e03 | 443 | |
30eb1dc2 JB |
444 | if (new_sta_bw > sta->cur_max_bandwidth) |
445 | new_sta_bw = sta->cur_max_bandwidth; | |
64f68e5d | 446 | |
30eb1dc2 JB |
447 | if (new_sta_bw < sta->sta.bandwidth) { |
448 | sta->sta.bandwidth = new_sta_bw; | |
449 | rate_control_rate_update(local, sband, sta, | |
450 | IEEE80211_RC_BW_CHANGED); | |
451 | } | |
64f68e5d | 452 | |
30eb1dc2 JB |
453 | ret = ieee80211_vif_change_bandwidth(sdata, &chandef, changed); |
454 | if (ret) { | |
455 | sdata_info(sdata, | |
456 | "AP %pM changed bandwidth to incompatible one - disconnect\n", | |
457 | ifmgd->bssid); | |
458 | return ret; | |
459 | } | |
7cc44ed4 | 460 | |
30eb1dc2 JB |
461 | if (new_sta_bw > sta->sta.bandwidth) { |
462 | sta->sta.bandwidth = new_sta_bw; | |
463 | rate_control_rate_update(local, sband, sta, | |
464 | IEEE80211_RC_BW_CHANGED); | |
0aaffa9b | 465 | } |
d5522e03 | 466 | |
30eb1dc2 | 467 | return 0; |
d5522e03 JB |
468 | } |
469 | ||
9c6bd790 JB |
470 | /* frame sending functions */ |
471 | ||
66e67e41 | 472 | static void ieee80211_add_ht_ie(struct ieee80211_sub_if_data *sdata, |
9dde6423 | 473 | struct sk_buff *skb, u8 ap_ht_param, |
66e67e41 JB |
474 | struct ieee80211_supported_band *sband, |
475 | struct ieee80211_channel *channel, | |
476 | enum ieee80211_smps_mode smps) | |
477 | { | |
66e67e41 JB |
478 | u8 *pos; |
479 | u32 flags = channel->flags; | |
480 | u16 cap; | |
481 | struct ieee80211_sta_ht_cap ht_cap; | |
482 | ||
483 | BUILD_BUG_ON(sizeof(ht_cap) != sizeof(sband->ht_cap)); | |
484 | ||
66e67e41 JB |
485 | memcpy(&ht_cap, &sband->ht_cap, sizeof(ht_cap)); |
486 | ieee80211_apply_htcap_overrides(sdata, &ht_cap); | |
487 | ||
66e67e41 JB |
488 | /* determine capability flags */ |
489 | cap = ht_cap.cap; | |
490 | ||
9dde6423 | 491 | switch (ap_ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) { |
66e67e41 JB |
492 | case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: |
493 | if (flags & IEEE80211_CHAN_NO_HT40PLUS) { | |
494 | cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; | |
495 | cap &= ~IEEE80211_HT_CAP_SGI_40; | |
496 | } | |
497 | break; | |
498 | case IEEE80211_HT_PARAM_CHA_SEC_BELOW: | |
499 | if (flags & IEEE80211_CHAN_NO_HT40MINUS) { | |
500 | cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; | |
501 | cap &= ~IEEE80211_HT_CAP_SGI_40; | |
502 | } | |
503 | break; | |
504 | } | |
505 | ||
24398e39 JB |
506 | /* |
507 | * If 40 MHz was disabled associate as though we weren't | |
508 | * capable of 40 MHz -- some broken APs will never fall | |
509 | * back to trying to transmit in 20 MHz. | |
510 | */ | |
511 | if (sdata->u.mgd.flags & IEEE80211_STA_DISABLE_40MHZ) { | |
512 | cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; | |
513 | cap &= ~IEEE80211_HT_CAP_SGI_40; | |
514 | } | |
515 | ||
66e67e41 JB |
516 | /* set SM PS mode properly */ |
517 | cap &= ~IEEE80211_HT_CAP_SM_PS; | |
518 | switch (smps) { | |
519 | case IEEE80211_SMPS_AUTOMATIC: | |
520 | case IEEE80211_SMPS_NUM_MODES: | |
521 | WARN_ON(1); | |
522 | case IEEE80211_SMPS_OFF: | |
523 | cap |= WLAN_HT_CAP_SM_PS_DISABLED << | |
524 | IEEE80211_HT_CAP_SM_PS_SHIFT; | |
525 | break; | |
526 | case IEEE80211_SMPS_STATIC: | |
527 | cap |= WLAN_HT_CAP_SM_PS_STATIC << | |
528 | IEEE80211_HT_CAP_SM_PS_SHIFT; | |
529 | break; | |
530 | case IEEE80211_SMPS_DYNAMIC: | |
531 | cap |= WLAN_HT_CAP_SM_PS_DYNAMIC << | |
532 | IEEE80211_HT_CAP_SM_PS_SHIFT; | |
533 | break; | |
534 | } | |
535 | ||
536 | /* reserve and fill IE */ | |
537 | pos = skb_put(skb, sizeof(struct ieee80211_ht_cap) + 2); | |
538 | ieee80211_ie_build_ht_cap(pos, &ht_cap, cap); | |
539 | } | |
540 | ||
d545daba MP |
541 | static void ieee80211_add_vht_ie(struct ieee80211_sub_if_data *sdata, |
542 | struct sk_buff *skb, | |
b08fbbd8 JB |
543 | struct ieee80211_supported_band *sband, |
544 | struct ieee80211_vht_cap *ap_vht_cap) | |
d545daba MP |
545 | { |
546 | u8 *pos; | |
547 | u32 cap; | |
548 | struct ieee80211_sta_vht_cap vht_cap; | |
c1cf6d4e | 549 | u32 mask, ap_bf_sts, our_bf_sts; |
d545daba MP |
550 | |
551 | BUILD_BUG_ON(sizeof(vht_cap) != sizeof(sband->vht_cap)); | |
552 | ||
553 | memcpy(&vht_cap, &sband->vht_cap, sizeof(vht_cap)); | |
dd5ecfea | 554 | ieee80211_apply_vhtcap_overrides(sdata, &vht_cap); |
d545daba MP |
555 | |
556 | /* determine capability flags */ | |
557 | cap = vht_cap.cap; | |
558 | ||
f2d9d270 | 559 | if (sdata->u.mgd.flags & IEEE80211_STA_DISABLE_80P80MHZ) { |
575f0530 JB |
560 | u32 bw = cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK; |
561 | ||
562 | cap &= ~IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK; | |
563 | if (bw == IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ || | |
564 | bw == IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ) | |
565 | cap |= IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ; | |
f2d9d270 JB |
566 | } |
567 | ||
568 | if (sdata->u.mgd.flags & IEEE80211_STA_DISABLE_160MHZ) { | |
569 | cap &= ~IEEE80211_VHT_CAP_SHORT_GI_160; | |
575f0530 | 570 | cap &= ~IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK; |
f2d9d270 JB |
571 | } |
572 | ||
b08fbbd8 JB |
573 | /* |
574 | * Some APs apparently get confused if our capabilities are better | |
575 | * than theirs, so restrict what we advertise in the assoc request. | |
576 | */ | |
577 | if (!(ap_vht_cap->vht_cap_info & | |
578 | cpu_to_le32(IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE))) | |
579 | cap &= ~IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE; | |
580 | ||
c1cf6d4e ES |
581 | mask = IEEE80211_VHT_CAP_BEAMFORMEE_STS_MASK; |
582 | ||
583 | ap_bf_sts = le32_to_cpu(ap_vht_cap->vht_cap_info) & mask; | |
584 | our_bf_sts = cap & mask; | |
585 | ||
586 | if (ap_bf_sts < our_bf_sts) { | |
587 | cap &= ~mask; | |
588 | cap |= ap_bf_sts; | |
589 | } | |
590 | ||
d545daba | 591 | /* reserve and fill IE */ |
d4950281 | 592 | pos = skb_put(skb, sizeof(struct ieee80211_vht_cap) + 2); |
d545daba MP |
593 | ieee80211_ie_build_vht_cap(pos, &vht_cap, cap); |
594 | } | |
595 | ||
66e67e41 JB |
596 | static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata) |
597 | { | |
598 | struct ieee80211_local *local = sdata->local; | |
599 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
600 | struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data; | |
601 | struct sk_buff *skb; | |
602 | struct ieee80211_mgmt *mgmt; | |
603 | u8 *pos, qos_info; | |
604 | size_t offset = 0, noffset; | |
2103dec1 | 605 | int i, count, rates_len, supp_rates_len, shift; |
66e67e41 JB |
606 | u16 capab; |
607 | struct ieee80211_supported_band *sband; | |
55de908a JB |
608 | struct ieee80211_chanctx_conf *chanctx_conf; |
609 | struct ieee80211_channel *chan; | |
2103dec1 | 610 | u32 rate_flags, rates = 0; |
66e67e41 | 611 | |
8d61ffa5 | 612 | sdata_assert_lock(sdata); |
66e67e41 | 613 | |
55de908a JB |
614 | rcu_read_lock(); |
615 | chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); | |
616 | if (WARN_ON(!chanctx_conf)) { | |
617 | rcu_read_unlock(); | |
618 | return; | |
619 | } | |
4bf88530 | 620 | chan = chanctx_conf->def.chan; |
2103dec1 | 621 | rate_flags = ieee80211_chandef_rate_flags(&chanctx_conf->def); |
55de908a JB |
622 | rcu_read_unlock(); |
623 | sband = local->hw.wiphy->bands[chan->band]; | |
2103dec1 | 624 | shift = ieee80211_vif_get_shift(&sdata->vif); |
66e67e41 JB |
625 | |
626 | if (assoc_data->supp_rates_len) { | |
627 | /* | |
628 | * Get all rates supported by the device and the AP as | |
629 | * some APs don't like getting a superset of their rates | |
630 | * in the association request (e.g. D-Link DAP 1353 in | |
631 | * b-only mode)... | |
632 | */ | |
2103dec1 SW |
633 | rates_len = ieee80211_parse_bitrates(&chanctx_conf->def, sband, |
634 | assoc_data->supp_rates, | |
635 | assoc_data->supp_rates_len, | |
636 | &rates); | |
66e67e41 JB |
637 | } else { |
638 | /* | |
639 | * In case AP not provide any supported rates information | |
640 | * before association, we send information element(s) with | |
641 | * all rates that we support. | |
642 | */ | |
2103dec1 SW |
643 | rates_len = 0; |
644 | for (i = 0; i < sband->n_bitrates; i++) { | |
645 | if ((rate_flags & sband->bitrates[i].flags) | |
646 | != rate_flags) | |
647 | continue; | |
648 | rates |= BIT(i); | |
649 | rates_len++; | |
650 | } | |
66e67e41 JB |
651 | } |
652 | ||
653 | skb = alloc_skb(local->hw.extra_tx_headroom + | |
654 | sizeof(*mgmt) + /* bit too much but doesn't matter */ | |
655 | 2 + assoc_data->ssid_len + /* SSID */ | |
656 | 4 + rates_len + /* (extended) rates */ | |
657 | 4 + /* power capability */ | |
658 | 2 + 2 * sband->n_channels + /* supported channels */ | |
659 | 2 + sizeof(struct ieee80211_ht_cap) + /* HT */ | |
d4950281 | 660 | 2 + sizeof(struct ieee80211_vht_cap) + /* VHT */ |
66e67e41 JB |
661 | assoc_data->ie_len + /* extra IEs */ |
662 | 9, /* WMM */ | |
663 | GFP_KERNEL); | |
664 | if (!skb) | |
665 | return; | |
666 | ||
667 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
668 | ||
669 | capab = WLAN_CAPABILITY_ESS; | |
670 | ||
671 | if (sband->band == IEEE80211_BAND_2GHZ) { | |
672 | if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE)) | |
673 | capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME; | |
674 | if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE)) | |
675 | capab |= WLAN_CAPABILITY_SHORT_PREAMBLE; | |
676 | } | |
677 | ||
678 | if (assoc_data->capability & WLAN_CAPABILITY_PRIVACY) | |
679 | capab |= WLAN_CAPABILITY_PRIVACY; | |
680 | ||
681 | if ((assoc_data->capability & WLAN_CAPABILITY_SPECTRUM_MGMT) && | |
682 | (local->hw.flags & IEEE80211_HW_SPECTRUM_MGMT)) | |
683 | capab |= WLAN_CAPABILITY_SPECTRUM_MGMT; | |
684 | ||
cd2f5dd7 AK |
685 | if (ifmgd->flags & IEEE80211_STA_ENABLE_RRM) |
686 | capab |= WLAN_CAPABILITY_RADIO_MEASURE; | |
687 | ||
66e67e41 JB |
688 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); |
689 | memset(mgmt, 0, 24); | |
690 | memcpy(mgmt->da, assoc_data->bss->bssid, ETH_ALEN); | |
691 | memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); | |
692 | memcpy(mgmt->bssid, assoc_data->bss->bssid, ETH_ALEN); | |
693 | ||
694 | if (!is_zero_ether_addr(assoc_data->prev_bssid)) { | |
695 | skb_put(skb, 10); | |
696 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | | |
697 | IEEE80211_STYPE_REASSOC_REQ); | |
698 | mgmt->u.reassoc_req.capab_info = cpu_to_le16(capab); | |
699 | mgmt->u.reassoc_req.listen_interval = | |
700 | cpu_to_le16(local->hw.conf.listen_interval); | |
701 | memcpy(mgmt->u.reassoc_req.current_ap, assoc_data->prev_bssid, | |
702 | ETH_ALEN); | |
703 | } else { | |
704 | skb_put(skb, 4); | |
705 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | | |
706 | IEEE80211_STYPE_ASSOC_REQ); | |
707 | mgmt->u.assoc_req.capab_info = cpu_to_le16(capab); | |
708 | mgmt->u.assoc_req.listen_interval = | |
709 | cpu_to_le16(local->hw.conf.listen_interval); | |
710 | } | |
711 | ||
712 | /* SSID */ | |
713 | pos = skb_put(skb, 2 + assoc_data->ssid_len); | |
714 | *pos++ = WLAN_EID_SSID; | |
715 | *pos++ = assoc_data->ssid_len; | |
716 | memcpy(pos, assoc_data->ssid, assoc_data->ssid_len); | |
717 | ||
718 | /* add all rates which were marked to be used above */ | |
719 | supp_rates_len = rates_len; | |
720 | if (supp_rates_len > 8) | |
721 | supp_rates_len = 8; | |
722 | ||
723 | pos = skb_put(skb, supp_rates_len + 2); | |
724 | *pos++ = WLAN_EID_SUPP_RATES; | |
725 | *pos++ = supp_rates_len; | |
726 | ||
727 | count = 0; | |
728 | for (i = 0; i < sband->n_bitrates; i++) { | |
729 | if (BIT(i) & rates) { | |
2103dec1 SW |
730 | int rate = DIV_ROUND_UP(sband->bitrates[i].bitrate, |
731 | 5 * (1 << shift)); | |
732 | *pos++ = (u8) rate; | |
66e67e41 JB |
733 | if (++count == 8) |
734 | break; | |
735 | } | |
736 | } | |
737 | ||
738 | if (rates_len > count) { | |
739 | pos = skb_put(skb, rates_len - count + 2); | |
740 | *pos++ = WLAN_EID_EXT_SUPP_RATES; | |
741 | *pos++ = rates_len - count; | |
742 | ||
743 | for (i++; i < sband->n_bitrates; i++) { | |
744 | if (BIT(i) & rates) { | |
2103dec1 SW |
745 | int rate; |
746 | rate = DIV_ROUND_UP(sband->bitrates[i].bitrate, | |
747 | 5 * (1 << shift)); | |
748 | *pos++ = (u8) rate; | |
66e67e41 JB |
749 | } |
750 | } | |
751 | } | |
752 | ||
cd2f5dd7 AK |
753 | if (capab & WLAN_CAPABILITY_SPECTRUM_MGMT || |
754 | capab & WLAN_CAPABILITY_RADIO_MEASURE) { | |
66e67e41 JB |
755 | pos = skb_put(skb, 4); |
756 | *pos++ = WLAN_EID_PWR_CAPABILITY; | |
757 | *pos++ = 2; | |
758 | *pos++ = 0; /* min tx power */ | |
0430c883 SW |
759 | /* max tx power */ |
760 | *pos++ = ieee80211_chandef_max_power(&chanctx_conf->def); | |
cd2f5dd7 | 761 | } |
66e67e41 | 762 | |
cd2f5dd7 | 763 | if (capab & WLAN_CAPABILITY_SPECTRUM_MGMT) { |
66e67e41 JB |
764 | /* TODO: get this in reg domain format */ |
765 | pos = skb_put(skb, 2 * sband->n_channels + 2); | |
766 | *pos++ = WLAN_EID_SUPPORTED_CHANNELS; | |
767 | *pos++ = 2 * sband->n_channels; | |
768 | for (i = 0; i < sband->n_channels; i++) { | |
769 | *pos++ = ieee80211_frequency_to_channel( | |
770 | sband->channels[i].center_freq); | |
771 | *pos++ = 1; /* one channel in the subband*/ | |
772 | } | |
773 | } | |
774 | ||
775 | /* if present, add any custom IEs that go before HT */ | |
b3f51e94 | 776 | if (assoc_data->ie_len) { |
66e67e41 JB |
777 | static const u8 before_ht[] = { |
778 | WLAN_EID_SSID, | |
779 | WLAN_EID_SUPP_RATES, | |
780 | WLAN_EID_EXT_SUPP_RATES, | |
781 | WLAN_EID_PWR_CAPABILITY, | |
782 | WLAN_EID_SUPPORTED_CHANNELS, | |
783 | WLAN_EID_RSN, | |
784 | WLAN_EID_QOS_CAPA, | |
785 | WLAN_EID_RRM_ENABLED_CAPABILITIES, | |
786 | WLAN_EID_MOBILITY_DOMAIN, | |
8ed28747 JB |
787 | WLAN_EID_FAST_BSS_TRANSITION, /* reassoc only */ |
788 | WLAN_EID_RIC_DATA, /* reassoc only */ | |
66e67e41 JB |
789 | WLAN_EID_SUPPORTED_REGULATORY_CLASSES, |
790 | }; | |
8ed28747 JB |
791 | static const u8 after_ric[] = { |
792 | WLAN_EID_SUPPORTED_REGULATORY_CLASSES, | |
793 | WLAN_EID_HT_CAPABILITY, | |
794 | WLAN_EID_BSS_COEX_2040, | |
795 | WLAN_EID_EXT_CAPABILITY, | |
796 | WLAN_EID_QOS_TRAFFIC_CAPA, | |
797 | WLAN_EID_TIM_BCAST_REQ, | |
798 | WLAN_EID_INTERWORKING, | |
799 | /* 60GHz doesn't happen right now */ | |
800 | WLAN_EID_VHT_CAPABILITY, | |
801 | WLAN_EID_OPMODE_NOTIF, | |
802 | }; | |
803 | ||
804 | noffset = ieee80211_ie_split_ric(assoc_data->ie, | |
805 | assoc_data->ie_len, | |
806 | before_ht, | |
807 | ARRAY_SIZE(before_ht), | |
808 | after_ric, | |
809 | ARRAY_SIZE(after_ric), | |
810 | offset); | |
66e67e41 JB |
811 | pos = skb_put(skb, noffset - offset); |
812 | memcpy(pos, assoc_data->ie + offset, noffset - offset); | |
813 | offset = noffset; | |
814 | } | |
815 | ||
f2d9d270 JB |
816 | if (WARN_ON_ONCE((ifmgd->flags & IEEE80211_STA_DISABLE_HT) && |
817 | !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))) | |
818 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; | |
819 | ||
a8243b72 | 820 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) |
9dde6423 | 821 | ieee80211_add_ht_ie(sdata, skb, assoc_data->ap_ht_param, |
04ecd257 | 822 | sband, chan, sdata->smps_mode); |
66e67e41 | 823 | |
3de3802c JB |
824 | /* if present, add any custom IEs that go before VHT */ |
825 | if (assoc_data->ie_len) { | |
826 | static const u8 before_vht[] = { | |
827 | WLAN_EID_SSID, | |
828 | WLAN_EID_SUPP_RATES, | |
829 | WLAN_EID_EXT_SUPP_RATES, | |
830 | WLAN_EID_PWR_CAPABILITY, | |
831 | WLAN_EID_SUPPORTED_CHANNELS, | |
832 | WLAN_EID_RSN, | |
833 | WLAN_EID_QOS_CAPA, | |
834 | WLAN_EID_RRM_ENABLED_CAPABILITIES, | |
835 | WLAN_EID_MOBILITY_DOMAIN, | |
836 | WLAN_EID_SUPPORTED_REGULATORY_CLASSES, | |
837 | WLAN_EID_HT_CAPABILITY, | |
838 | WLAN_EID_BSS_COEX_2040, | |
839 | WLAN_EID_EXT_CAPABILITY, | |
840 | WLAN_EID_QOS_TRAFFIC_CAPA, | |
841 | WLAN_EID_TIM_BCAST_REQ, | |
842 | WLAN_EID_INTERWORKING, | |
843 | }; | |
8ed28747 JB |
844 | |
845 | /* RIC already taken above, so no need to handle here anymore */ | |
3de3802c JB |
846 | noffset = ieee80211_ie_split(assoc_data->ie, assoc_data->ie_len, |
847 | before_vht, ARRAY_SIZE(before_vht), | |
848 | offset); | |
849 | pos = skb_put(skb, noffset - offset); | |
850 | memcpy(pos, assoc_data->ie + offset, noffset - offset); | |
851 | offset = noffset; | |
852 | } | |
853 | ||
d545daba | 854 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) |
b08fbbd8 JB |
855 | ieee80211_add_vht_ie(sdata, skb, sband, |
856 | &assoc_data->ap_vht_cap); | |
d545daba | 857 | |
66e67e41 | 858 | /* if present, add any custom non-vendor IEs that go after HT */ |
b3f51e94 | 859 | if (assoc_data->ie_len) { |
66e67e41 JB |
860 | noffset = ieee80211_ie_split_vendor(assoc_data->ie, |
861 | assoc_data->ie_len, | |
862 | offset); | |
863 | pos = skb_put(skb, noffset - offset); | |
864 | memcpy(pos, assoc_data->ie + offset, noffset - offset); | |
865 | offset = noffset; | |
866 | } | |
867 | ||
76f0303d JB |
868 | if (assoc_data->wmm) { |
869 | if (assoc_data->uapsd) { | |
dc41e4d4 EP |
870 | qos_info = ifmgd->uapsd_queues; |
871 | qos_info |= (ifmgd->uapsd_max_sp_len << | |
66e67e41 JB |
872 | IEEE80211_WMM_IE_STA_QOSINFO_SP_SHIFT); |
873 | } else { | |
874 | qos_info = 0; | |
875 | } | |
876 | ||
40b861a0 | 877 | pos = ieee80211_add_wmm_info_ie(skb_put(skb, 9), qos_info); |
66e67e41 JB |
878 | } |
879 | ||
880 | /* add any remaining custom (i.e. vendor specific here) IEs */ | |
b3f51e94 | 881 | if (assoc_data->ie_len) { |
66e67e41 JB |
882 | noffset = assoc_data->ie_len; |
883 | pos = skb_put(skb, noffset - offset); | |
884 | memcpy(pos, assoc_data->ie + offset, noffset - offset); | |
885 | } | |
886 | ||
a1845fc7 JB |
887 | drv_mgd_prepare_tx(local, sdata); |
888 | ||
66e67e41 | 889 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; |
1672c0e3 JB |
890 | if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) |
891 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS | | |
892 | IEEE80211_TX_INTFL_MLME_CONN_TX; | |
66e67e41 JB |
893 | ieee80211_tx_skb(sdata, skb); |
894 | } | |
895 | ||
572e0012 KV |
896 | void ieee80211_send_pspoll(struct ieee80211_local *local, |
897 | struct ieee80211_sub_if_data *sdata) | |
898 | { | |
572e0012 KV |
899 | struct ieee80211_pspoll *pspoll; |
900 | struct sk_buff *skb; | |
572e0012 | 901 | |
d8cd189e KV |
902 | skb = ieee80211_pspoll_get(&local->hw, &sdata->vif); |
903 | if (!skb) | |
572e0012 | 904 | return; |
572e0012 | 905 | |
d8cd189e KV |
906 | pspoll = (struct ieee80211_pspoll *) skb->data; |
907 | pspoll->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM); | |
572e0012 | 908 | |
62ae67be JB |
909 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; |
910 | ieee80211_tx_skb(sdata, skb); | |
572e0012 KV |
911 | } |
912 | ||
965bedad JB |
913 | void ieee80211_send_nullfunc(struct ieee80211_local *local, |
914 | struct ieee80211_sub_if_data *sdata, | |
915 | int powersave) | |
916 | { | |
917 | struct sk_buff *skb; | |
d8cd189e | 918 | struct ieee80211_hdr_3addr *nullfunc; |
b6f35301 | 919 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
965bedad | 920 | |
d8cd189e KV |
921 | skb = ieee80211_nullfunc_get(&local->hw, &sdata->vif); |
922 | if (!skb) | |
965bedad | 923 | return; |
965bedad | 924 | |
d8cd189e | 925 | nullfunc = (struct ieee80211_hdr_3addr *) skb->data; |
965bedad | 926 | if (powersave) |
d8cd189e | 927 | nullfunc->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM); |
965bedad | 928 | |
6c17b77b SF |
929 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT | |
930 | IEEE80211_TX_INTFL_OFFCHAN_TX_OK; | |
ff40b425 PF |
931 | |
932 | if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) | |
933 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS; | |
934 | ||
392b9ffb | 935 | if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL) |
b6f35301 RM |
936 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_USE_MINRATE; |
937 | ||
62ae67be | 938 | ieee80211_tx_skb(sdata, skb); |
965bedad JB |
939 | } |
940 | ||
d524215f FF |
941 | static void ieee80211_send_4addr_nullfunc(struct ieee80211_local *local, |
942 | struct ieee80211_sub_if_data *sdata) | |
943 | { | |
944 | struct sk_buff *skb; | |
945 | struct ieee80211_hdr *nullfunc; | |
946 | __le16 fc; | |
947 | ||
948 | if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION)) | |
949 | return; | |
950 | ||
951 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + 30); | |
d15b8459 | 952 | if (!skb) |
d524215f | 953 | return; |
d15b8459 | 954 | |
d524215f FF |
955 | skb_reserve(skb, local->hw.extra_tx_headroom); |
956 | ||
957 | nullfunc = (struct ieee80211_hdr *) skb_put(skb, 30); | |
958 | memset(nullfunc, 0, 30); | |
959 | fc = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC | | |
960 | IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS); | |
961 | nullfunc->frame_control = fc; | |
962 | memcpy(nullfunc->addr1, sdata->u.mgd.bssid, ETH_ALEN); | |
963 | memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN); | |
964 | memcpy(nullfunc->addr3, sdata->u.mgd.bssid, ETH_ALEN); | |
965 | memcpy(nullfunc->addr4, sdata->vif.addr, ETH_ALEN); | |
966 | ||
967 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; | |
968 | ieee80211_tx_skb(sdata, skb); | |
969 | } | |
970 | ||
cc32abd4 JB |
971 | /* spectrum management related things */ |
972 | static void ieee80211_chswitch_work(struct work_struct *work) | |
973 | { | |
974 | struct ieee80211_sub_if_data *sdata = | |
975 | container_of(work, struct ieee80211_sub_if_data, u.mgd.chswitch_work); | |
675a0b04 | 976 | struct ieee80211_local *local = sdata->local; |
cc32abd4 | 977 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
7578d575 | 978 | int ret; |
cc32abd4 | 979 | |
9607e6b6 | 980 | if (!ieee80211_sdata_running(sdata)) |
cc32abd4 JB |
981 | return; |
982 | ||
8d61ffa5 | 983 | sdata_lock(sdata); |
4c3ebc56 MK |
984 | mutex_lock(&local->mtx); |
985 | mutex_lock(&local->chanctx_mtx); | |
986 | ||
77fdaa12 JB |
987 | if (!ifmgd->associated) |
988 | goto out; | |
cc32abd4 | 989 | |
4c3ebc56 MK |
990 | if (!sdata->vif.csa_active) |
991 | goto out; | |
992 | ||
993 | /* | |
994 | * using reservation isn't immediate as it may be deferred until later | |
995 | * with multi-vif. once reservation is complete it will re-schedule the | |
996 | * work with no reserved_chanctx so verify chandef to check if it | |
997 | * completed successfully | |
998 | */ | |
999 | ||
1000 | if (sdata->reserved_chanctx) { | |
1001 | /* | |
1002 | * with multi-vif csa driver may call ieee80211_csa_finish() | |
1003 | * many times while waiting for other interfaces to use their | |
1004 | * reservations | |
1005 | */ | |
1006 | if (sdata->reserved_ready) | |
1007 | goto out; | |
1008 | ||
1009 | ret = ieee80211_vif_use_reserved_context(sdata); | |
1010 | if (ret) { | |
1011 | sdata_info(sdata, | |
1012 | "failed to use reserved channel context, disconnecting (err=%d)\n", | |
1013 | ret); | |
1014 | ieee80211_queue_work(&sdata->local->hw, | |
1015 | &ifmgd->csa_connection_drop_work); | |
1016 | goto out; | |
1017 | } | |
1018 | ||
1019 | goto out; | |
1020 | } | |
1021 | ||
1022 | if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef, | |
1023 | &sdata->csa_chandef)) { | |
7578d575 | 1024 | sdata_info(sdata, |
4c3ebc56 | 1025 | "failed to finalize channel switch, disconnecting\n"); |
7578d575 AN |
1026 | ieee80211_queue_work(&sdata->local->hw, |
1027 | &ifmgd->csa_connection_drop_work); | |
1028 | goto out; | |
1029 | } | |
675a0b04 | 1030 | |
cc32abd4 | 1031 | /* XXX: shouldn't really modify cfg80211-owned data! */ |
33787fc4 | 1032 | ifmgd->associated->channel = sdata->csa_chandef.chan; |
cc32abd4 | 1033 | |
0c21e632 LC |
1034 | ifmgd->csa_waiting_bcn = true; |
1035 | ||
1036 | ieee80211_sta_reset_beacon_monitor(sdata); | |
1037 | ieee80211_sta_reset_conn_monitor(sdata); | |
1038 | ||
1039 | out: | |
1040 | mutex_unlock(&local->chanctx_mtx); | |
1041 | mutex_unlock(&local->mtx); | |
1042 | sdata_unlock(sdata); | |
1043 | } | |
1044 | ||
1045 | static void ieee80211_chswitch_post_beacon(struct ieee80211_sub_if_data *sdata) | |
1046 | { | |
1047 | struct ieee80211_local *local = sdata->local; | |
1048 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
1049 | int ret; | |
1050 | ||
1051 | sdata_assert_lock(sdata); | |
1052 | ||
1053 | WARN_ON(!sdata->vif.csa_active); | |
4c3ebc56 | 1054 | |
a46992b4 LC |
1055 | if (sdata->csa_block_tx) { |
1056 | ieee80211_wake_vif_queues(local, sdata, | |
1057 | IEEE80211_QUEUE_STOP_REASON_CSA); | |
1058 | sdata->csa_block_tx = false; | |
1059 | } | |
7578d575 | 1060 | |
0c21e632 LC |
1061 | sdata->vif.csa_active = false; |
1062 | ifmgd->csa_waiting_bcn = false; | |
1063 | ||
f1d65583 LC |
1064 | ret = drv_post_channel_switch(sdata); |
1065 | if (ret) { | |
1066 | sdata_info(sdata, | |
1067 | "driver post channel switch failed, disconnecting\n"); | |
1068 | ieee80211_queue_work(&local->hw, | |
1069 | &ifmgd->csa_connection_drop_work); | |
0c21e632 | 1070 | return; |
f1d65583 | 1071 | } |
688b1ecf LC |
1072 | |
1073 | cfg80211_ch_switch_notify(sdata->dev, &sdata->reserved_chandef); | |
cc32abd4 JB |
1074 | } |
1075 | ||
5ce6e438 JB |
1076 | void ieee80211_chswitch_done(struct ieee80211_vif *vif, bool success) |
1077 | { | |
55de908a JB |
1078 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); |
1079 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
5ce6e438 JB |
1080 | |
1081 | trace_api_chswitch_done(sdata, success); | |
1082 | if (!success) { | |
882a7c69 JB |
1083 | sdata_info(sdata, |
1084 | "driver channel switch failed, disconnecting\n"); | |
1085 | ieee80211_queue_work(&sdata->local->hw, | |
1086 | &ifmgd->csa_connection_drop_work); | |
1087 | } else { | |
1088 | ieee80211_queue_work(&sdata->local->hw, &ifmgd->chswitch_work); | |
5ce6e438 | 1089 | } |
5ce6e438 JB |
1090 | } |
1091 | EXPORT_SYMBOL(ieee80211_chswitch_done); | |
1092 | ||
cc32abd4 JB |
1093 | static void ieee80211_chswitch_timer(unsigned long data) |
1094 | { | |
1095 | struct ieee80211_sub_if_data *sdata = | |
1096 | (struct ieee80211_sub_if_data *) data; | |
5bb644a0 | 1097 | |
9b7d72c1 | 1098 | ieee80211_queue_work(&sdata->local->hw, &sdata->u.mgd.chswitch_work); |
cc32abd4 JB |
1099 | } |
1100 | ||
37799e52 | 1101 | static void |
4a3cb702 | 1102 | ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata, |
2ba45384 LC |
1103 | u64 timestamp, u32 device_timestamp, |
1104 | struct ieee802_11_elems *elems, | |
04a161f4 | 1105 | bool beacon) |
cc32abd4 | 1106 | { |
b4f286a1 | 1107 | struct ieee80211_local *local = sdata->local; |
cc32abd4 | 1108 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
37799e52 | 1109 | struct cfg80211_bss *cbss = ifmgd->associated; |
4c3ebc56 | 1110 | struct ieee80211_chanctx_conf *conf; |
55de908a | 1111 | struct ieee80211_chanctx *chanctx; |
e6b7cde4 | 1112 | enum ieee80211_band current_band; |
c0f17eb9 | 1113 | struct ieee80211_csa_ie csa_ie; |
6d027bcc | 1114 | struct ieee80211_channel_switch ch_switch; |
e6b7cde4 | 1115 | int res; |
cc32abd4 | 1116 | |
8d61ffa5 | 1117 | sdata_assert_lock(sdata); |
77fdaa12 | 1118 | |
37799e52 | 1119 | if (!cbss) |
cc32abd4 JB |
1120 | return; |
1121 | ||
b4f286a1 | 1122 | if (local->scanning) |
cc32abd4 JB |
1123 | return; |
1124 | ||
37799e52 | 1125 | /* disregard subsequent announcements if we are already processing */ |
3e2a0226 | 1126 | if (sdata->vif.csa_active) |
cc32abd4 JB |
1127 | return; |
1128 | ||
e6b7cde4 | 1129 | current_band = cbss->channel->band; |
c0f17eb9 | 1130 | memset(&csa_ie, 0, sizeof(csa_ie)); |
84469a45 | 1131 | res = ieee80211_parse_ch_switch_ie(sdata, elems, current_band, |
e6b7cde4 | 1132 | ifmgd->flags, |
c0f17eb9 | 1133 | ifmgd->associated->bssid, &csa_ie); |
e6b7cde4 | 1134 | if (res < 0) |
b4f286a1 | 1135 | ieee80211_queue_work(&local->hw, |
882a7c69 | 1136 | &ifmgd->csa_connection_drop_work); |
e6b7cde4 | 1137 | if (res) |
cc32abd4 | 1138 | return; |
cd64f2a9 | 1139 | |
c0f17eb9 | 1140 | if (!cfg80211_chandef_usable(local->hw.wiphy, &csa_ie.chandef, |
85220d71 JB |
1141 | IEEE80211_CHAN_DISABLED)) { |
1142 | sdata_info(sdata, | |
1143 | "AP %pM switches to unsupported channel (%d MHz, width:%d, CF1/2: %d/%d MHz), disconnecting\n", | |
e6b7cde4 | 1144 | ifmgd->associated->bssid, |
c0f17eb9 CYY |
1145 | csa_ie.chandef.chan->center_freq, |
1146 | csa_ie.chandef.width, csa_ie.chandef.center_freq1, | |
1147 | csa_ie.chandef.center_freq2); | |
85220d71 JB |
1148 | ieee80211_queue_work(&local->hw, |
1149 | &ifmgd->csa_connection_drop_work); | |
1150 | return; | |
1151 | } | |
1152 | ||
4c3ebc56 | 1153 | mutex_lock(&local->mtx); |
7578d575 | 1154 | mutex_lock(&local->chanctx_mtx); |
4c3ebc56 MK |
1155 | conf = rcu_dereference_protected(sdata->vif.chanctx_conf, |
1156 | lockdep_is_held(&local->chanctx_mtx)); | |
1157 | if (!conf) { | |
1158 | sdata_info(sdata, | |
1159 | "no channel context assigned to vif?, disconnecting\n"); | |
f3b0bbb3 | 1160 | goto drop_connection; |
4c3ebc56 MK |
1161 | } |
1162 | ||
1163 | chanctx = container_of(conf, struct ieee80211_chanctx, conf); | |
1164 | ||
0f791eb4 LC |
1165 | if (local->use_chanctx && |
1166 | !(local->hw.flags & IEEE80211_HW_CHANCTX_STA_CSA)) { | |
1167 | sdata_info(sdata, | |
1168 | "driver doesn't support chan-switch with channel contexts\n"); | |
f3b0bbb3 | 1169 | goto drop_connection; |
55de908a JB |
1170 | } |
1171 | ||
6d027bcc LC |
1172 | ch_switch.timestamp = timestamp; |
1173 | ch_switch.device_timestamp = device_timestamp; | |
1174 | ch_switch.block_tx = csa_ie.mode; | |
1175 | ch_switch.chandef = csa_ie.chandef; | |
1176 | ch_switch.count = csa_ie.count; | |
1177 | ||
1178 | if (drv_pre_channel_switch(sdata, &ch_switch)) { | |
1179 | sdata_info(sdata, | |
1180 | "preparing for channel switch failed, disconnecting\n"); | |
f3b0bbb3 | 1181 | goto drop_connection; |
6d027bcc LC |
1182 | } |
1183 | ||
4c3ebc56 MK |
1184 | res = ieee80211_vif_reserve_chanctx(sdata, &csa_ie.chandef, |
1185 | chanctx->mode, false); | |
1186 | if (res) { | |
55de908a | 1187 | sdata_info(sdata, |
4c3ebc56 MK |
1188 | "failed to reserve channel context for channel switch, disconnecting (err=%d)\n", |
1189 | res); | |
f3b0bbb3 | 1190 | goto drop_connection; |
55de908a | 1191 | } |
b4f286a1 | 1192 | mutex_unlock(&local->chanctx_mtx); |
55de908a | 1193 | |
c46a73f3 | 1194 | sdata->vif.csa_active = true; |
4c3ebc56 | 1195 | sdata->csa_chandef = csa_ie.chandef; |
59af6928 | 1196 | sdata->csa_block_tx = csa_ie.mode; |
55de908a | 1197 | |
59af6928 | 1198 | if (sdata->csa_block_tx) |
a46992b4 LC |
1199 | ieee80211_stop_vif_queues(local, sdata, |
1200 | IEEE80211_QUEUE_STOP_REASON_CSA); | |
59af6928 | 1201 | mutex_unlock(&local->mtx); |
57eebdf3 | 1202 | |
2f457293 LC |
1203 | cfg80211_ch_switch_started_notify(sdata->dev, &csa_ie.chandef, |
1204 | csa_ie.count); | |
1205 | ||
b4f286a1 | 1206 | if (local->ops->channel_switch) { |
5ce6e438 | 1207 | /* use driver's channel switch callback */ |
0f791eb4 | 1208 | drv_channel_switch(local, sdata, &ch_switch); |
5ce6e438 JB |
1209 | return; |
1210 | } | |
1211 | ||
1212 | /* channel switch handled in software */ | |
c0f17eb9 | 1213 | if (csa_ie.count <= 1) |
b4f286a1 | 1214 | ieee80211_queue_work(&local->hw, &ifmgd->chswitch_work); |
57eebdf3 | 1215 | else |
cc32abd4 | 1216 | mod_timer(&ifmgd->chswitch_timer, |
ff1e417c LC |
1217 | TU_TO_EXP_TIME((csa_ie.count - 1) * |
1218 | cbss->beacon_interval)); | |
f3b0bbb3 JB |
1219 | return; |
1220 | drop_connection: | |
1221 | ieee80211_queue_work(&local->hw, &ifmgd->csa_connection_drop_work); | |
1222 | mutex_unlock(&local->chanctx_mtx); | |
1223 | mutex_unlock(&local->mtx); | |
cc32abd4 JB |
1224 | } |
1225 | ||
24a4e400 SG |
1226 | static bool |
1227 | ieee80211_find_80211h_pwr_constr(struct ieee80211_sub_if_data *sdata, | |
1228 | struct ieee80211_channel *channel, | |
1229 | const u8 *country_ie, u8 country_ie_len, | |
1230 | const u8 *pwr_constr_elem, | |
1231 | int *chan_pwr, int *pwr_reduction) | |
cc32abd4 | 1232 | { |
04b7b2ff JB |
1233 | struct ieee80211_country_ie_triplet *triplet; |
1234 | int chan = ieee80211_frequency_to_channel(channel->center_freq); | |
24a4e400 | 1235 | int i, chan_increment; |
04b7b2ff | 1236 | bool have_chan_pwr = false; |
cc32abd4 | 1237 | |
04b7b2ff JB |
1238 | /* Invalid IE */ |
1239 | if (country_ie_len % 2 || country_ie_len < IEEE80211_COUNTRY_IE_MIN_LEN) | |
24a4e400 | 1240 | return false; |
cc32abd4 | 1241 | |
04b7b2ff JB |
1242 | triplet = (void *)(country_ie + 3); |
1243 | country_ie_len -= 3; | |
1244 | ||
1245 | switch (channel->band) { | |
1246 | default: | |
1247 | WARN_ON_ONCE(1); | |
1248 | /* fall through */ | |
1249 | case IEEE80211_BAND_2GHZ: | |
1250 | case IEEE80211_BAND_60GHZ: | |
1251 | chan_increment = 1; | |
1252 | break; | |
1253 | case IEEE80211_BAND_5GHZ: | |
1254 | chan_increment = 4; | |
1255 | break; | |
cc32abd4 | 1256 | } |
04b7b2ff JB |
1257 | |
1258 | /* find channel */ | |
1259 | while (country_ie_len >= 3) { | |
1260 | u8 first_channel = triplet->chans.first_channel; | |
1261 | ||
1262 | if (first_channel >= IEEE80211_COUNTRY_EXTENSION_ID) | |
1263 | goto next; | |
1264 | ||
1265 | for (i = 0; i < triplet->chans.num_channels; i++) { | |
1266 | if (first_channel + i * chan_increment == chan) { | |
1267 | have_chan_pwr = true; | |
24a4e400 | 1268 | *chan_pwr = triplet->chans.max_power; |
04b7b2ff JB |
1269 | break; |
1270 | } | |
1271 | } | |
1272 | if (have_chan_pwr) | |
1273 | break; | |
1274 | ||
1275 | next: | |
1276 | triplet++; | |
1277 | country_ie_len -= 3; | |
1278 | } | |
1279 | ||
a5fee9cb | 1280 | if (have_chan_pwr && pwr_constr_elem) |
24a4e400 | 1281 | *pwr_reduction = *pwr_constr_elem; |
a5fee9cb MB |
1282 | else |
1283 | *pwr_reduction = 0; | |
1284 | ||
24a4e400 SG |
1285 | return have_chan_pwr; |
1286 | } | |
1287 | ||
c8d65917 SG |
1288 | static void ieee80211_find_cisco_dtpc(struct ieee80211_sub_if_data *sdata, |
1289 | struct ieee80211_channel *channel, | |
1290 | const u8 *cisco_dtpc_ie, | |
1291 | int *pwr_level) | |
1292 | { | |
1293 | /* From practical testing, the first data byte of the DTPC element | |
1294 | * seems to contain the requested dBm level, and the CLI on Cisco | |
1295 | * APs clearly state the range is -127 to 127 dBm, which indicates | |
1296 | * a signed byte, although it seemingly never actually goes negative. | |
1297 | * The other byte seems to always be zero. | |
1298 | */ | |
1299 | *pwr_level = (__s8)cisco_dtpc_ie[4]; | |
1300 | } | |
1301 | ||
24a4e400 SG |
1302 | static u32 ieee80211_handle_pwr_constr(struct ieee80211_sub_if_data *sdata, |
1303 | struct ieee80211_channel *channel, | |
1304 | struct ieee80211_mgmt *mgmt, | |
1305 | const u8 *country_ie, u8 country_ie_len, | |
c8d65917 SG |
1306 | const u8 *pwr_constr_ie, |
1307 | const u8 *cisco_dtpc_ie) | |
24a4e400 | 1308 | { |
c8d65917 SG |
1309 | bool has_80211h_pwr = false, has_cisco_pwr = false; |
1310 | int chan_pwr = 0, pwr_reduction_80211h = 0; | |
1311 | int pwr_level_cisco, pwr_level_80211h; | |
24a4e400 | 1312 | int new_ap_level; |
a5fee9cb | 1313 | __le16 capab = mgmt->u.probe_resp.capab_info; |
04b7b2ff | 1314 | |
a5fee9cb MB |
1315 | if (country_ie && |
1316 | (capab & cpu_to_le16(WLAN_CAPABILITY_SPECTRUM_MGMT) || | |
1317 | capab & cpu_to_le16(WLAN_CAPABILITY_RADIO_MEASURE))) { | |
24a4e400 SG |
1318 | has_80211h_pwr = ieee80211_find_80211h_pwr_constr( |
1319 | sdata, channel, country_ie, country_ie_len, | |
1320 | pwr_constr_ie, &chan_pwr, &pwr_reduction_80211h); | |
c8d65917 SG |
1321 | pwr_level_80211h = |
1322 | max_t(int, 0, chan_pwr - pwr_reduction_80211h); | |
1323 | } | |
1324 | ||
1325 | if (cisco_dtpc_ie) { | |
1326 | ieee80211_find_cisco_dtpc( | |
1327 | sdata, channel, cisco_dtpc_ie, &pwr_level_cisco); | |
1328 | has_cisco_pwr = true; | |
24a4e400 | 1329 | } |
04b7b2ff | 1330 | |
c8d65917 | 1331 | if (!has_80211h_pwr && !has_cisco_pwr) |
1ea6f9c0 | 1332 | return 0; |
04b7b2ff | 1333 | |
c8d65917 SG |
1334 | /* If we have both 802.11h and Cisco DTPC, apply both limits |
1335 | * by picking the smallest of the two power levels advertised. | |
1336 | */ | |
1337 | if (has_80211h_pwr && | |
1338 | (!has_cisco_pwr || pwr_level_80211h <= pwr_level_cisco)) { | |
1339 | sdata_info(sdata, | |
1340 | "Limiting TX power to %d (%d - %d) dBm as advertised by %pM\n", | |
1341 | pwr_level_80211h, chan_pwr, pwr_reduction_80211h, | |
1342 | sdata->u.mgd.bssid); | |
1343 | new_ap_level = pwr_level_80211h; | |
1344 | } else { /* has_cisco_pwr is always true here. */ | |
1345 | sdata_info(sdata, | |
1346 | "Limiting TX power to %d dBm as advertised by %pM\n", | |
1347 | pwr_level_cisco, sdata->u.mgd.bssid); | |
1348 | new_ap_level = pwr_level_cisco; | |
1349 | } | |
04b7b2ff | 1350 | |
1ea6f9c0 JB |
1351 | if (sdata->ap_power_level == new_ap_level) |
1352 | return 0; | |
04b7b2ff | 1353 | |
1ea6f9c0 JB |
1354 | sdata->ap_power_level = new_ap_level; |
1355 | if (__ieee80211_recalc_txpower(sdata)) | |
1356 | return BSS_CHANGED_TXPOWER; | |
1357 | return 0; | |
cc32abd4 JB |
1358 | } |
1359 | ||
965bedad JB |
1360 | /* powersave */ |
1361 | static void ieee80211_enable_ps(struct ieee80211_local *local, | |
1362 | struct ieee80211_sub_if_data *sdata) | |
1363 | { | |
1364 | struct ieee80211_conf *conf = &local->hw.conf; | |
1365 | ||
d5edaedc JB |
1366 | /* |
1367 | * If we are scanning right now then the parameters will | |
1368 | * take effect when scan finishes. | |
1369 | */ | |
fbe9c429 | 1370 | if (local->scanning) |
d5edaedc JB |
1371 | return; |
1372 | ||
965bedad JB |
1373 | if (conf->dynamic_ps_timeout > 0 && |
1374 | !(local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)) { | |
1375 | mod_timer(&local->dynamic_ps_timer, jiffies + | |
1376 | msecs_to_jiffies(conf->dynamic_ps_timeout)); | |
1377 | } else { | |
1378 | if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) | |
1379 | ieee80211_send_nullfunc(local, sdata, 1); | |
375177bf | 1380 | |
2a13052f JO |
1381 | if ((local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) && |
1382 | (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)) | |
1383 | return; | |
1384 | ||
1385 | conf->flags |= IEEE80211_CONF_PS; | |
1386 | ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); | |
965bedad JB |
1387 | } |
1388 | } | |
1389 | ||
1390 | static void ieee80211_change_ps(struct ieee80211_local *local) | |
1391 | { | |
1392 | struct ieee80211_conf *conf = &local->hw.conf; | |
1393 | ||
1394 | if (local->ps_sdata) { | |
965bedad JB |
1395 | ieee80211_enable_ps(local, local->ps_sdata); |
1396 | } else if (conf->flags & IEEE80211_CONF_PS) { | |
1397 | conf->flags &= ~IEEE80211_CONF_PS; | |
1398 | ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); | |
1399 | del_timer_sync(&local->dynamic_ps_timer); | |
1400 | cancel_work_sync(&local->dynamic_ps_enable_work); | |
1401 | } | |
1402 | } | |
1403 | ||
808118cb JY |
1404 | static bool ieee80211_powersave_allowed(struct ieee80211_sub_if_data *sdata) |
1405 | { | |
1406 | struct ieee80211_if_managed *mgd = &sdata->u.mgd; | |
1407 | struct sta_info *sta = NULL; | |
c2c98fde | 1408 | bool authorized = false; |
808118cb JY |
1409 | |
1410 | if (!mgd->powersave) | |
1411 | return false; | |
1412 | ||
05cb9108 JB |
1413 | if (mgd->broken_ap) |
1414 | return false; | |
1415 | ||
808118cb JY |
1416 | if (!mgd->associated) |
1417 | return false; | |
1418 | ||
392b9ffb | 1419 | if (mgd->flags & IEEE80211_STA_CONNECTION_POLL) |
808118cb JY |
1420 | return false; |
1421 | ||
989c6505 | 1422 | if (!mgd->have_beacon) |
ce857888 AB |
1423 | return false; |
1424 | ||
808118cb JY |
1425 | rcu_read_lock(); |
1426 | sta = sta_info_get(sdata, mgd->bssid); | |
1427 | if (sta) | |
c2c98fde | 1428 | authorized = test_sta_flag(sta, WLAN_STA_AUTHORIZED); |
808118cb JY |
1429 | rcu_read_unlock(); |
1430 | ||
c2c98fde | 1431 | return authorized; |
808118cb JY |
1432 | } |
1433 | ||
965bedad | 1434 | /* need to hold RTNL or interface lock */ |
10f644a4 | 1435 | void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency) |
965bedad JB |
1436 | { |
1437 | struct ieee80211_sub_if_data *sdata, *found = NULL; | |
1438 | int count = 0; | |
195e294d | 1439 | int timeout; |
965bedad JB |
1440 | |
1441 | if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS)) { | |
1442 | local->ps_sdata = NULL; | |
1443 | return; | |
1444 | } | |
1445 | ||
1446 | list_for_each_entry(sdata, &local->interfaces, list) { | |
9607e6b6 | 1447 | if (!ieee80211_sdata_running(sdata)) |
965bedad | 1448 | continue; |
8c7914de RM |
1449 | if (sdata->vif.type == NL80211_IFTYPE_AP) { |
1450 | /* If an AP vif is found, then disable PS | |
1451 | * by setting the count to zero thereby setting | |
1452 | * ps_sdata to NULL. | |
1453 | */ | |
1454 | count = 0; | |
1455 | break; | |
1456 | } | |
965bedad JB |
1457 | if (sdata->vif.type != NL80211_IFTYPE_STATION) |
1458 | continue; | |
1459 | found = sdata; | |
1460 | count++; | |
1461 | } | |
1462 | ||
808118cb | 1463 | if (count == 1 && ieee80211_powersave_allowed(found)) { |
10f644a4 JB |
1464 | s32 beaconint_us; |
1465 | ||
1466 | if (latency < 0) | |
ed77134b | 1467 | latency = pm_qos_request(PM_QOS_NETWORK_LATENCY); |
10f644a4 JB |
1468 | |
1469 | beaconint_us = ieee80211_tu_to_usec( | |
1470 | found->vif.bss_conf.beacon_int); | |
1471 | ||
ff616381 | 1472 | timeout = local->dynamic_ps_forced_timeout; |
195e294d JO |
1473 | if (timeout < 0) { |
1474 | /* | |
ff616381 JO |
1475 | * Go to full PSM if the user configures a very low |
1476 | * latency requirement. | |
0ab82b04 EP |
1477 | * The 2000 second value is there for compatibility |
1478 | * until the PM_QOS_NETWORK_LATENCY is configured | |
1479 | * with real values. | |
195e294d | 1480 | */ |
0ab82b04 EP |
1481 | if (latency > (1900 * USEC_PER_MSEC) && |
1482 | latency != (2000 * USEC_PER_SEC)) | |
195e294d | 1483 | timeout = 0; |
ff616381 JO |
1484 | else |
1485 | timeout = 100; | |
195e294d | 1486 | } |
09b85568 | 1487 | local->hw.conf.dynamic_ps_timeout = timeout; |
195e294d | 1488 | |
04fe2037 | 1489 | if (beaconint_us > latency) { |
10f644a4 | 1490 | local->ps_sdata = NULL; |
04fe2037 | 1491 | } else { |
04fe2037 | 1492 | int maxslp = 1; |
826262c3 | 1493 | u8 dtimper = found->u.mgd.dtim_period; |
56007a02 JB |
1494 | |
1495 | /* If the TIM IE is invalid, pretend the value is 1 */ | |
1496 | if (!dtimper) | |
1497 | dtimper = 1; | |
1498 | else if (dtimper > 1) | |
04fe2037 JB |
1499 | maxslp = min_t(int, dtimper, |
1500 | latency / beaconint_us); | |
1501 | ||
9ccebe61 | 1502 | local->hw.conf.max_sleep_period = maxslp; |
56007a02 | 1503 | local->hw.conf.ps_dtim_period = dtimper; |
10f644a4 | 1504 | local->ps_sdata = found; |
04fe2037 | 1505 | } |
10f644a4 | 1506 | } else { |
965bedad | 1507 | local->ps_sdata = NULL; |
10f644a4 | 1508 | } |
965bedad JB |
1509 | |
1510 | ieee80211_change_ps(local); | |
1511 | } | |
1512 | ||
ab095877 EP |
1513 | void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata) |
1514 | { | |
1515 | bool ps_allowed = ieee80211_powersave_allowed(sdata); | |
1516 | ||
1517 | if (sdata->vif.bss_conf.ps != ps_allowed) { | |
1518 | sdata->vif.bss_conf.ps = ps_allowed; | |
1519 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_PS); | |
1520 | } | |
1521 | } | |
1522 | ||
965bedad JB |
1523 | void ieee80211_dynamic_ps_disable_work(struct work_struct *work) |
1524 | { | |
1525 | struct ieee80211_local *local = | |
1526 | container_of(work, struct ieee80211_local, | |
1527 | dynamic_ps_disable_work); | |
1528 | ||
1529 | if (local->hw.conf.flags & IEEE80211_CONF_PS) { | |
1530 | local->hw.conf.flags &= ~IEEE80211_CONF_PS; | |
1531 | ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); | |
1532 | } | |
1533 | ||
1534 | ieee80211_wake_queues_by_reason(&local->hw, | |
445ea4e8 | 1535 | IEEE80211_MAX_QUEUE_MAP, |
cca07b00 LC |
1536 | IEEE80211_QUEUE_STOP_REASON_PS, |
1537 | false); | |
965bedad JB |
1538 | } |
1539 | ||
1540 | void ieee80211_dynamic_ps_enable_work(struct work_struct *work) | |
1541 | { | |
1542 | struct ieee80211_local *local = | |
1543 | container_of(work, struct ieee80211_local, | |
1544 | dynamic_ps_enable_work); | |
1545 | struct ieee80211_sub_if_data *sdata = local->ps_sdata; | |
5e34069c | 1546 | struct ieee80211_if_managed *ifmgd; |
1ddc2867 RM |
1547 | unsigned long flags; |
1548 | int q; | |
965bedad JB |
1549 | |
1550 | /* can only happen when PS was just disabled anyway */ | |
1551 | if (!sdata) | |
1552 | return; | |
1553 | ||
5e34069c CL |
1554 | ifmgd = &sdata->u.mgd; |
1555 | ||
965bedad JB |
1556 | if (local->hw.conf.flags & IEEE80211_CONF_PS) |
1557 | return; | |
1558 | ||
09b85568 | 1559 | if (local->hw.conf.dynamic_ps_timeout > 0) { |
77b7023a AN |
1560 | /* don't enter PS if TX frames are pending */ |
1561 | if (drv_tx_frames_pending(local)) { | |
1ddc2867 RM |
1562 | mod_timer(&local->dynamic_ps_timer, jiffies + |
1563 | msecs_to_jiffies( | |
1564 | local->hw.conf.dynamic_ps_timeout)); | |
1565 | return; | |
1566 | } | |
77b7023a AN |
1567 | |
1568 | /* | |
1569 | * transmission can be stopped by others which leads to | |
1570 | * dynamic_ps_timer expiry. Postpone the ps timer if it | |
1571 | * is not the actual idle state. | |
1572 | */ | |
1573 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); | |
1574 | for (q = 0; q < local->hw.queues; q++) { | |
1575 | if (local->queue_stop_reasons[q]) { | |
1576 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, | |
1577 | flags); | |
1578 | mod_timer(&local->dynamic_ps_timer, jiffies + | |
1579 | msecs_to_jiffies( | |
1580 | local->hw.conf.dynamic_ps_timeout)); | |
1581 | return; | |
1582 | } | |
1583 | } | |
1584 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
1ddc2867 | 1585 | } |
1ddc2867 | 1586 | |
375177bf | 1587 | if ((local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) && |
9c38a8b4 | 1588 | !(ifmgd->flags & IEEE80211_STA_NULLFUNC_ACKED)) { |
a1598383 | 1589 | if (drv_tx_frames_pending(local)) { |
e8306f98 VN |
1590 | mod_timer(&local->dynamic_ps_timer, jiffies + |
1591 | msecs_to_jiffies( | |
1592 | local->hw.conf.dynamic_ps_timeout)); | |
a1598383 | 1593 | } else { |
e8306f98 VN |
1594 | ieee80211_send_nullfunc(local, sdata, 1); |
1595 | /* Flush to get the tx status of nullfunc frame */ | |
3b24f4c6 | 1596 | ieee80211_flush_queues(local, sdata, false); |
e8306f98 | 1597 | } |
f3e85b9e VN |
1598 | } |
1599 | ||
2a13052f JO |
1600 | if (!((local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) && |
1601 | (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK)) || | |
375177bf VN |
1602 | (ifmgd->flags & IEEE80211_STA_NULLFUNC_ACKED)) { |
1603 | ifmgd->flags &= ~IEEE80211_STA_NULLFUNC_ACKED; | |
1604 | local->hw.conf.flags |= IEEE80211_CONF_PS; | |
1605 | ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); | |
1606 | } | |
965bedad JB |
1607 | } |
1608 | ||
1609 | void ieee80211_dynamic_ps_timer(unsigned long data) | |
1610 | { | |
1611 | struct ieee80211_local *local = (void *) data; | |
1612 | ||
42935eca | 1613 | ieee80211_queue_work(&local->hw, &local->dynamic_ps_enable_work); |
965bedad JB |
1614 | } |
1615 | ||
164eb02d SW |
1616 | void ieee80211_dfs_cac_timer_work(struct work_struct *work) |
1617 | { | |
1618 | struct delayed_work *delayed_work = | |
1619 | container_of(work, struct delayed_work, work); | |
1620 | struct ieee80211_sub_if_data *sdata = | |
1621 | container_of(delayed_work, struct ieee80211_sub_if_data, | |
1622 | dfs_cac_timer_work); | |
d2859df5 | 1623 | struct cfg80211_chan_def chandef = sdata->vif.bss_conf.chandef; |
164eb02d | 1624 | |
34a3740d JB |
1625 | mutex_lock(&sdata->local->mtx); |
1626 | if (sdata->wdev.cac_started) { | |
1627 | ieee80211_vif_release_channel(sdata); | |
1628 | cfg80211_cac_event(sdata->dev, &chandef, | |
1629 | NL80211_RADAR_CAC_FINISHED, | |
1630 | GFP_KERNEL); | |
1631 | } | |
1632 | mutex_unlock(&sdata->local->mtx); | |
164eb02d SW |
1633 | } |
1634 | ||
02219b3a JB |
1635 | static bool |
1636 | __ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata) | |
1637 | { | |
1638 | struct ieee80211_local *local = sdata->local; | |
1639 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
cc72f6e2 | 1640 | bool ret = false; |
02219b3a JB |
1641 | int ac; |
1642 | ||
1643 | if (local->hw.queues < IEEE80211_NUM_ACS) | |
1644 | return false; | |
1645 | ||
1646 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { | |
1647 | struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac]; | |
1648 | int non_acm_ac; | |
1649 | unsigned long now = jiffies; | |
1650 | ||
1651 | if (tx_tspec->action == TX_TSPEC_ACTION_NONE && | |
1652 | tx_tspec->admitted_time && | |
1653 | time_after(now, tx_tspec->time_slice_start + HZ)) { | |
1654 | tx_tspec->consumed_tx_time = 0; | |
1655 | tx_tspec->time_slice_start = now; | |
1656 | ||
1657 | if (tx_tspec->downgraded) | |
1658 | tx_tspec->action = | |
1659 | TX_TSPEC_ACTION_STOP_DOWNGRADE; | |
1660 | } | |
1661 | ||
1662 | switch (tx_tspec->action) { | |
1663 | case TX_TSPEC_ACTION_STOP_DOWNGRADE: | |
1664 | /* take the original parameters */ | |
1665 | if (drv_conf_tx(local, sdata, ac, &sdata->tx_conf[ac])) | |
1666 | sdata_err(sdata, | |
1667 | "failed to set TX queue parameters for queue %d\n", | |
1668 | ac); | |
1669 | tx_tspec->action = TX_TSPEC_ACTION_NONE; | |
1670 | tx_tspec->downgraded = false; | |
1671 | ret = true; | |
1672 | break; | |
1673 | case TX_TSPEC_ACTION_DOWNGRADE: | |
1674 | if (time_after(now, tx_tspec->time_slice_start + HZ)) { | |
1675 | tx_tspec->action = TX_TSPEC_ACTION_NONE; | |
1676 | ret = true; | |
1677 | break; | |
1678 | } | |
1679 | /* downgrade next lower non-ACM AC */ | |
1680 | for (non_acm_ac = ac + 1; | |
1681 | non_acm_ac < IEEE80211_NUM_ACS; | |
1682 | non_acm_ac++) | |
1683 | if (!(sdata->wmm_acm & BIT(7 - 2 * non_acm_ac))) | |
1684 | break; | |
1685 | /* The loop will result in using BK even if it requires | |
1686 | * admission control, such configuration makes no sense | |
1687 | * and we have to transmit somehow - the AC selection | |
1688 | * does the same thing. | |
1689 | */ | |
1690 | if (drv_conf_tx(local, sdata, ac, | |
1691 | &sdata->tx_conf[non_acm_ac])) | |
1692 | sdata_err(sdata, | |
1693 | "failed to set TX queue parameters for queue %d\n", | |
1694 | ac); | |
1695 | tx_tspec->action = TX_TSPEC_ACTION_NONE; | |
1696 | ret = true; | |
1697 | schedule_delayed_work(&ifmgd->tx_tspec_wk, | |
1698 | tx_tspec->time_slice_start + HZ - now + 1); | |
1699 | break; | |
1700 | case TX_TSPEC_ACTION_NONE: | |
1701 | /* nothing now */ | |
1702 | break; | |
1703 | } | |
1704 | } | |
1705 | ||
1706 | return ret; | |
1707 | } | |
1708 | ||
1709 | void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata) | |
1710 | { | |
1711 | if (__ieee80211_sta_handle_tspec_ac_params(sdata)) | |
1712 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS); | |
1713 | } | |
1714 | ||
1715 | static void ieee80211_sta_handle_tspec_ac_params_wk(struct work_struct *work) | |
1716 | { | |
1717 | struct ieee80211_sub_if_data *sdata; | |
1718 | ||
1719 | sdata = container_of(work, struct ieee80211_sub_if_data, | |
1720 | u.mgd.tx_tspec_wk.work); | |
1721 | ieee80211_sta_handle_tspec_ac_params(sdata); | |
1722 | } | |
1723 | ||
60f8b39c | 1724 | /* MLME */ |
7d25745d | 1725 | static bool ieee80211_sta_wmm_params(struct ieee80211_local *local, |
4ced3f74 | 1726 | struct ieee80211_sub_if_data *sdata, |
4a3cb702 | 1727 | const u8 *wmm_param, size_t wmm_param_len) |
f0706e82 | 1728 | { |
f0706e82 | 1729 | struct ieee80211_tx_queue_params params; |
4ced3f74 | 1730 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
f0706e82 JB |
1731 | size_t left; |
1732 | int count; | |
4a3cb702 JB |
1733 | const u8 *pos; |
1734 | u8 uapsd_queues = 0; | |
f0706e82 | 1735 | |
e1b3ec1a | 1736 | if (!local->ops->conf_tx) |
7d25745d | 1737 | return false; |
e1b3ec1a | 1738 | |
32c5057b | 1739 | if (local->hw.queues < IEEE80211_NUM_ACS) |
7d25745d | 1740 | return false; |
3434fbd3 JB |
1741 | |
1742 | if (!wmm_param) | |
7d25745d | 1743 | return false; |
3434fbd3 | 1744 | |
f0706e82 | 1745 | if (wmm_param_len < 8 || wmm_param[5] /* version */ != 1) |
7d25745d | 1746 | return false; |
ab13315a KV |
1747 | |
1748 | if (ifmgd->flags & IEEE80211_STA_UAPSD_ENABLED) | |
dc41e4d4 | 1749 | uapsd_queues = ifmgd->uapsd_queues; |
ab13315a | 1750 | |
f0706e82 | 1751 | count = wmm_param[6] & 0x0f; |
46900298 | 1752 | if (count == ifmgd->wmm_last_param_set) |
7d25745d | 1753 | return false; |
46900298 | 1754 | ifmgd->wmm_last_param_set = count; |
f0706e82 JB |
1755 | |
1756 | pos = wmm_param + 8; | |
1757 | left = wmm_param_len - 8; | |
1758 | ||
1759 | memset(¶ms, 0, sizeof(params)); | |
1760 | ||
00e96dec | 1761 | sdata->wmm_acm = 0; |
f0706e82 JB |
1762 | for (; left >= 4; left -= 4, pos += 4) { |
1763 | int aci = (pos[0] >> 5) & 0x03; | |
1764 | int acm = (pos[0] >> 4) & 0x01; | |
ab13315a | 1765 | bool uapsd = false; |
f0706e82 JB |
1766 | int queue; |
1767 | ||
1768 | switch (aci) { | |
0eeb59fe | 1769 | case 1: /* AC_BK */ |
e100bb64 | 1770 | queue = 3; |
988c0f72 | 1771 | if (acm) |
00e96dec | 1772 | sdata->wmm_acm |= BIT(1) | BIT(2); /* BK/- */ |
ab13315a KV |
1773 | if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BK) |
1774 | uapsd = true; | |
f0706e82 | 1775 | break; |
0eeb59fe | 1776 | case 2: /* AC_VI */ |
e100bb64 | 1777 | queue = 1; |
988c0f72 | 1778 | if (acm) |
00e96dec | 1779 | sdata->wmm_acm |= BIT(4) | BIT(5); /* CL/VI */ |
ab13315a KV |
1780 | if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VI) |
1781 | uapsd = true; | |
f0706e82 | 1782 | break; |
0eeb59fe | 1783 | case 3: /* AC_VO */ |
e100bb64 | 1784 | queue = 0; |
988c0f72 | 1785 | if (acm) |
00e96dec | 1786 | sdata->wmm_acm |= BIT(6) | BIT(7); /* VO/NC */ |
ab13315a KV |
1787 | if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VO) |
1788 | uapsd = true; | |
f0706e82 | 1789 | break; |
0eeb59fe | 1790 | case 0: /* AC_BE */ |
f0706e82 | 1791 | default: |
e100bb64 | 1792 | queue = 2; |
988c0f72 | 1793 | if (acm) |
00e96dec | 1794 | sdata->wmm_acm |= BIT(0) | BIT(3); /* BE/EE */ |
ab13315a KV |
1795 | if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BE) |
1796 | uapsd = true; | |
f0706e82 JB |
1797 | break; |
1798 | } | |
1799 | ||
1800 | params.aifs = pos[0] & 0x0f; | |
1801 | params.cw_max = ecw2cw((pos[1] & 0xf0) >> 4); | |
1802 | params.cw_min = ecw2cw(pos[1] & 0x0f); | |
f434b2d1 | 1803 | params.txop = get_unaligned_le16(pos + 2); |
908f8d07 | 1804 | params.acm = acm; |
ab13315a KV |
1805 | params.uapsd = uapsd; |
1806 | ||
bdcbd8e0 | 1807 | mlme_dbg(sdata, |
02219b3a | 1808 | "WMM queue=%d aci=%d acm=%d aifs=%d cWmin=%d cWmax=%d txop=%d uapsd=%d, downgraded=%d\n", |
bdcbd8e0 JB |
1809 | queue, aci, acm, |
1810 | params.aifs, params.cw_min, params.cw_max, | |
02219b3a JB |
1811 | params.txop, params.uapsd, |
1812 | ifmgd->tx_tspec[queue].downgraded); | |
f6f3def3 | 1813 | sdata->tx_conf[queue] = params; |
02219b3a JB |
1814 | if (!ifmgd->tx_tspec[queue].downgraded && |
1815 | drv_conf_tx(local, sdata, queue, ¶ms)) | |
bdcbd8e0 JB |
1816 | sdata_err(sdata, |
1817 | "failed to set TX queue parameters for queue %d\n", | |
1818 | queue); | |
f0706e82 | 1819 | } |
e1b3ec1a SG |
1820 | |
1821 | /* enable WMM or activate new settings */ | |
4ced3f74 | 1822 | sdata->vif.bss_conf.qos = true; |
7d25745d | 1823 | return true; |
f0706e82 JB |
1824 | } |
1825 | ||
925e64c3 SG |
1826 | static void __ieee80211_stop_poll(struct ieee80211_sub_if_data *sdata) |
1827 | { | |
1828 | lockdep_assert_held(&sdata->local->mtx); | |
1829 | ||
392b9ffb | 1830 | sdata->u.mgd.flags &= ~IEEE80211_STA_CONNECTION_POLL; |
925e64c3 SG |
1831 | ieee80211_run_deferred_scan(sdata->local); |
1832 | } | |
1833 | ||
1834 | static void ieee80211_stop_poll(struct ieee80211_sub_if_data *sdata) | |
1835 | { | |
1836 | mutex_lock(&sdata->local->mtx); | |
1837 | __ieee80211_stop_poll(sdata); | |
1838 | mutex_unlock(&sdata->local->mtx); | |
1839 | } | |
1840 | ||
7a5158ef JB |
1841 | static u32 ieee80211_handle_bss_capability(struct ieee80211_sub_if_data *sdata, |
1842 | u16 capab, bool erp_valid, u8 erp) | |
5628221c | 1843 | { |
bda3933a | 1844 | struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf; |
471b3efd | 1845 | u32 changed = 0; |
7a5158ef JB |
1846 | bool use_protection; |
1847 | bool use_short_preamble; | |
1848 | bool use_short_slot; | |
1849 | ||
1850 | if (erp_valid) { | |
1851 | use_protection = (erp & WLAN_ERP_USE_PROTECTION) != 0; | |
1852 | use_short_preamble = (erp & WLAN_ERP_BARKER_PREAMBLE) == 0; | |
1853 | } else { | |
1854 | use_protection = false; | |
1855 | use_short_preamble = !!(capab & WLAN_CAPABILITY_SHORT_PREAMBLE); | |
1856 | } | |
1857 | ||
1858 | use_short_slot = !!(capab & WLAN_CAPABILITY_SHORT_SLOT_TIME); | |
55de908a | 1859 | if (ieee80211_get_sdata_band(sdata) == IEEE80211_BAND_5GHZ) |
43d35343 | 1860 | use_short_slot = true; |
5628221c | 1861 | |
471b3efd | 1862 | if (use_protection != bss_conf->use_cts_prot) { |
471b3efd JB |
1863 | bss_conf->use_cts_prot = use_protection; |
1864 | changed |= BSS_CHANGED_ERP_CTS_PROT; | |
5628221c | 1865 | } |
7e9ed188 | 1866 | |
d43c7b37 | 1867 | if (use_short_preamble != bss_conf->use_short_preamble) { |
d43c7b37 | 1868 | bss_conf->use_short_preamble = use_short_preamble; |
471b3efd | 1869 | changed |= BSS_CHANGED_ERP_PREAMBLE; |
7e9ed188 | 1870 | } |
d9430a32 | 1871 | |
7a5158ef | 1872 | if (use_short_slot != bss_conf->use_short_slot) { |
7a5158ef JB |
1873 | bss_conf->use_short_slot = use_short_slot; |
1874 | changed |= BSS_CHANGED_ERP_SLOT; | |
50c4afb9 JL |
1875 | } |
1876 | ||
1877 | return changed; | |
1878 | } | |
1879 | ||
f698d856 | 1880 | static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata, |
0c1ad2ca | 1881 | struct cfg80211_bss *cbss, |
ae5eb026 | 1882 | u32 bss_info_changed) |
f0706e82 | 1883 | { |
0c1ad2ca | 1884 | struct ieee80211_bss *bss = (void *)cbss->priv; |
471b3efd | 1885 | struct ieee80211_local *local = sdata->local; |
68542962 | 1886 | struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf; |
d6f2da5b | 1887 | |
ae5eb026 | 1888 | bss_info_changed |= BSS_CHANGED_ASSOC; |
77fdaa12 | 1889 | bss_info_changed |= ieee80211_handle_bss_capability(sdata, |
50ae34a2 | 1890 | bss_conf->assoc_capability, bss->has_erp_value, bss->erp_value); |
21c0cbe7 | 1891 | |
7ccc8bd7 | 1892 | sdata->u.mgd.beacon_timeout = usecs_to_jiffies(ieee80211_tu_to_usec( |
59c1ec2b | 1893 | beacon_loss_count * bss_conf->beacon_int)); |
7ccc8bd7 | 1894 | |
0c1ad2ca JB |
1895 | sdata->u.mgd.associated = cbss; |
1896 | memcpy(sdata->u.mgd.bssid, cbss->bssid, ETH_ALEN); | |
f0706e82 | 1897 | |
17e4ec14 JM |
1898 | sdata->u.mgd.flags |= IEEE80211_STA_RESET_SIGNAL_AVE; |
1899 | ||
488dd7b5 | 1900 | if (sdata->vif.p2p) { |
9caf0364 | 1901 | const struct cfg80211_bss_ies *ies; |
488dd7b5 | 1902 | |
9caf0364 JB |
1903 | rcu_read_lock(); |
1904 | ies = rcu_dereference(cbss->ies); | |
1905 | if (ies) { | |
9caf0364 JB |
1906 | int ret; |
1907 | ||
1908 | ret = cfg80211_get_p2p_attr( | |
1909 | ies->data, ies->len, | |
1910 | IEEE80211_P2P_ATTR_ABSENCE_NOTICE, | |
67baf663 JD |
1911 | (u8 *) &bss_conf->p2p_noa_attr, |
1912 | sizeof(bss_conf->p2p_noa_attr)); | |
9caf0364 | 1913 | if (ret >= 2) { |
67baf663 JD |
1914 | sdata->u.mgd.p2p_noa_index = |
1915 | bss_conf->p2p_noa_attr.index; | |
9caf0364 | 1916 | bss_info_changed |= BSS_CHANGED_P2P_PS; |
9caf0364 | 1917 | } |
488dd7b5 | 1918 | } |
9caf0364 | 1919 | rcu_read_unlock(); |
488dd7b5 JB |
1920 | } |
1921 | ||
b291ba11 | 1922 | /* just to be sure */ |
925e64c3 | 1923 | ieee80211_stop_poll(sdata); |
b291ba11 | 1924 | |
9ac19a90 | 1925 | ieee80211_led_assoc(local, 1); |
9306102e | 1926 | |
989c6505 | 1927 | if (sdata->u.mgd.have_beacon) { |
826262c3 JB |
1928 | /* |
1929 | * If the AP is buggy we may get here with no DTIM period | |
1930 | * known, so assume it's 1 which is the only safe assumption | |
1931 | * in that case, although if the TIM IE is broken powersave | |
1932 | * probably just won't work at all. | |
1933 | */ | |
1934 | bss_conf->dtim_period = sdata->u.mgd.dtim_period ?: 1; | |
817cee76 | 1935 | bss_conf->beacon_rate = bss->beacon_rate; |
989c6505 | 1936 | bss_info_changed |= BSS_CHANGED_BEACON_INFO; |
826262c3 | 1937 | } else { |
817cee76 | 1938 | bss_conf->beacon_rate = NULL; |
e5b900d2 | 1939 | bss_conf->dtim_period = 0; |
826262c3 | 1940 | } |
e5b900d2 | 1941 | |
68542962 | 1942 | bss_conf->assoc = 1; |
9cef8737 | 1943 | |
a97c13c3 | 1944 | /* Tell the driver to monitor connection quality (if supported) */ |
ea086359 | 1945 | if (sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI && |
68542962 | 1946 | bss_conf->cqm_rssi_thold) |
a97c13c3 JO |
1947 | bss_info_changed |= BSS_CHANGED_CQM; |
1948 | ||
68542962 | 1949 | /* Enable ARP filtering */ |
0f19b41e | 1950 | if (bss_conf->arp_addr_cnt) |
68542962 | 1951 | bss_info_changed |= BSS_CHANGED_ARP_FILTER; |
68542962 | 1952 | |
ae5eb026 | 1953 | ieee80211_bss_info_change_notify(sdata, bss_info_changed); |
f0706e82 | 1954 | |
056508dc JB |
1955 | mutex_lock(&local->iflist_mtx); |
1956 | ieee80211_recalc_ps(local, -1); | |
1957 | mutex_unlock(&local->iflist_mtx); | |
e0cb686f | 1958 | |
04ecd257 | 1959 | ieee80211_recalc_smps(sdata); |
ab095877 EP |
1960 | ieee80211_recalc_ps_vif(sdata); |
1961 | ||
9ac19a90 | 1962 | netif_carrier_on(sdata->dev); |
f0706e82 JB |
1963 | } |
1964 | ||
e69e95db | 1965 | static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata, |
37ad3888 JB |
1966 | u16 stype, u16 reason, bool tx, |
1967 | u8 *frame_buf) | |
aa458d17 | 1968 | { |
46900298 | 1969 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
aa458d17 | 1970 | struct ieee80211_local *local = sdata->local; |
3cc5240b | 1971 | u32 changed = 0; |
aa458d17 | 1972 | |
8d61ffa5 | 1973 | sdata_assert_lock(sdata); |
77fdaa12 | 1974 | |
37ad3888 JB |
1975 | if (WARN_ON_ONCE(tx && !frame_buf)) |
1976 | return; | |
1977 | ||
b291ba11 JB |
1978 | if (WARN_ON(!ifmgd->associated)) |
1979 | return; | |
1980 | ||
79543d8e DS |
1981 | ieee80211_stop_poll(sdata); |
1982 | ||
77fdaa12 | 1983 | ifmgd->associated = NULL; |
aa458d17 TW |
1984 | netif_carrier_off(sdata->dev); |
1985 | ||
88bc40e8 EP |
1986 | /* |
1987 | * if we want to get out of ps before disassoc (why?) we have | |
1988 | * to do it before sending disassoc, as otherwise the null-packet | |
1989 | * won't be valid. | |
1990 | */ | |
1991 | if (local->hw.conf.flags & IEEE80211_CONF_PS) { | |
1992 | local->hw.conf.flags &= ~IEEE80211_CONF_PS; | |
1993 | ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); | |
1994 | } | |
1995 | local->ps_sdata = NULL; | |
1996 | ||
ab095877 EP |
1997 | /* disable per-vif ps */ |
1998 | ieee80211_recalc_ps_vif(sdata); | |
1999 | ||
14f2ae83 EG |
2000 | /* make sure ongoing transmission finishes */ |
2001 | synchronize_net(); | |
2002 | ||
3b24f4c6 EG |
2003 | /* |
2004 | * drop any frame before deauth/disassoc, this can be data or | |
2005 | * management frame. Since we are disconnecting, we should not | |
2006 | * insist sending these frames which can take time and delay | |
2007 | * the disconnection and possible the roaming. | |
2008 | */ | |
f823981e | 2009 | if (tx) |
3b24f4c6 | 2010 | ieee80211_flush_queues(local, sdata, true); |
f823981e | 2011 | |
37ad3888 JB |
2012 | /* deauthenticate/disassociate now */ |
2013 | if (tx || frame_buf) | |
88a9e31c EP |
2014 | ieee80211_send_deauth_disassoc(sdata, ifmgd->bssid, stype, |
2015 | reason, tx, frame_buf); | |
37ad3888 | 2016 | |
3b24f4c6 | 2017 | /* flush out frame - make sure the deauth was actually sent */ |
37ad3888 | 2018 | if (tx) |
3b24f4c6 | 2019 | ieee80211_flush_queues(local, sdata, false); |
37ad3888 | 2020 | |
88a9e31c EP |
2021 | /* clear bssid only after building the needed mgmt frames */ |
2022 | memset(ifmgd->bssid, 0, ETH_ALEN); | |
2023 | ||
37ad3888 | 2024 | /* remove AP and TDLS peers */ |
d34ba216 | 2025 | sta_info_flush(sdata); |
37ad3888 JB |
2026 | |
2027 | /* finally reset all BSS / config parameters */ | |
f5e5bf25 TW |
2028 | changed |= ieee80211_reset_erp_info(sdata); |
2029 | ||
f5e5bf25 | 2030 | ieee80211_led_assoc(local, 0); |
ae5eb026 JB |
2031 | changed |= BSS_CHANGED_ASSOC; |
2032 | sdata->vif.bss_conf.assoc = false; | |
f5e5bf25 | 2033 | |
67baf663 JD |
2034 | ifmgd->p2p_noa_index = -1; |
2035 | memset(&sdata->vif.bss_conf.p2p_noa_attr, 0, | |
2036 | sizeof(sdata->vif.bss_conf.p2p_noa_attr)); | |
488dd7b5 | 2037 | |
dd5ecfea | 2038 | /* on the next assoc, re-program HT/VHT parameters */ |
ef96a842 BG |
2039 | memset(&ifmgd->ht_capa, 0, sizeof(ifmgd->ht_capa)); |
2040 | memset(&ifmgd->ht_capa_mask, 0, sizeof(ifmgd->ht_capa_mask)); | |
dd5ecfea JB |
2041 | memset(&ifmgd->vht_capa, 0, sizeof(ifmgd->vht_capa)); |
2042 | memset(&ifmgd->vht_capa_mask, 0, sizeof(ifmgd->vht_capa_mask)); | |
413ad50a | 2043 | |
1ea6f9c0 | 2044 | sdata->ap_power_level = IEEE80211_UNSET_POWER_LEVEL; |
a8302de9 | 2045 | |
520eb820 KV |
2046 | del_timer_sync(&local->dynamic_ps_timer); |
2047 | cancel_work_sync(&local->dynamic_ps_enable_work); | |
2048 | ||
68542962 | 2049 | /* Disable ARP filtering */ |
0f19b41e | 2050 | if (sdata->vif.bss_conf.arp_addr_cnt) |
68542962 | 2051 | changed |= BSS_CHANGED_ARP_FILTER; |
68542962 | 2052 | |
3abead59 JB |
2053 | sdata->vif.bss_conf.qos = false; |
2054 | changed |= BSS_CHANGED_QOS; | |
2055 | ||
0aaffa9b JB |
2056 | /* The BSSID (not really interesting) and HT changed */ |
2057 | changed |= BSS_CHANGED_BSSID | BSS_CHANGED_HT; | |
ae5eb026 | 2058 | ieee80211_bss_info_change_notify(sdata, changed); |
8e268e47 | 2059 | |
3abead59 JB |
2060 | /* disassociated - set to defaults now */ |
2061 | ieee80211_set_wmm_default(sdata, false); | |
2062 | ||
b9dcf712 JB |
2063 | del_timer_sync(&sdata->u.mgd.conn_mon_timer); |
2064 | del_timer_sync(&sdata->u.mgd.bcn_mon_timer); | |
2065 | del_timer_sync(&sdata->u.mgd.timer); | |
2066 | del_timer_sync(&sdata->u.mgd.chswitch_timer); | |
2d9957cc | 2067 | |
826262c3 | 2068 | sdata->vif.bss_conf.dtim_period = 0; |
817cee76 AB |
2069 | sdata->vif.bss_conf.beacon_rate = NULL; |
2070 | ||
989c6505 | 2071 | ifmgd->have_beacon = false; |
826262c3 | 2072 | |
028e8da0 | 2073 | ifmgd->flags = 0; |
34a3740d | 2074 | mutex_lock(&local->mtx); |
028e8da0 | 2075 | ieee80211_vif_release_channel(sdata); |
59af6928 MK |
2076 | |
2077 | sdata->vif.csa_active = false; | |
0c21e632 | 2078 | ifmgd->csa_waiting_bcn = false; |
a46992b4 LC |
2079 | if (sdata->csa_block_tx) { |
2080 | ieee80211_wake_vif_queues(local, sdata, | |
2081 | IEEE80211_QUEUE_STOP_REASON_CSA); | |
2082 | sdata->csa_block_tx = false; | |
2083 | } | |
34a3740d | 2084 | mutex_unlock(&local->mtx); |
2475b1cc | 2085 | |
02219b3a JB |
2086 | /* existing TX TSPEC sessions no longer exist */ |
2087 | memset(ifmgd->tx_tspec, 0, sizeof(ifmgd->tx_tspec)); | |
2088 | cancel_delayed_work_sync(&ifmgd->tx_tspec_wk); | |
2089 | ||
2475b1cc | 2090 | sdata->encrypt_headroom = IEEE80211_ENCRYPT_HEADROOM; |
aa458d17 | 2091 | } |
f0706e82 | 2092 | |
3cf335d5 KV |
2093 | void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata, |
2094 | struct ieee80211_hdr *hdr) | |
2095 | { | |
2096 | /* | |
2097 | * We can postpone the mgd.timer whenever receiving unicast frames | |
2098 | * from AP because we know that the connection is working both ways | |
2099 | * at that time. But multicast frames (and hence also beacons) must | |
2100 | * be ignored here, because we need to trigger the timer during | |
b291ba11 JB |
2101 | * data idle periods for sending the periodic probe request to the |
2102 | * AP we're connected to. | |
3cf335d5 | 2103 | */ |
b291ba11 JB |
2104 | if (is_multicast_ether_addr(hdr->addr1)) |
2105 | return; | |
2106 | ||
be099e82 | 2107 | ieee80211_sta_reset_conn_monitor(sdata); |
3cf335d5 | 2108 | } |
f0706e82 | 2109 | |
4e5ff376 FF |
2110 | static void ieee80211_reset_ap_probe(struct ieee80211_sub_if_data *sdata) |
2111 | { | |
2112 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
133d40f9 | 2113 | struct ieee80211_local *local = sdata->local; |
4e5ff376 | 2114 | |
133d40f9 | 2115 | mutex_lock(&local->mtx); |
392b9ffb SG |
2116 | if (!(ifmgd->flags & IEEE80211_STA_CONNECTION_POLL)) |
2117 | goto out; | |
4e5ff376 | 2118 | |
925e64c3 | 2119 | __ieee80211_stop_poll(sdata); |
133d40f9 SG |
2120 | |
2121 | mutex_lock(&local->iflist_mtx); | |
2122 | ieee80211_recalc_ps(local, -1); | |
2123 | mutex_unlock(&local->iflist_mtx); | |
4e5ff376 FF |
2124 | |
2125 | if (sdata->local->hw.flags & IEEE80211_HW_CONNECTION_MONITOR) | |
133d40f9 | 2126 | goto out; |
4e5ff376 FF |
2127 | |
2128 | /* | |
2129 | * We've received a probe response, but are not sure whether | |
2130 | * we have or will be receiving any beacons or data, so let's | |
2131 | * schedule the timers again, just in case. | |
2132 | */ | |
2133 | ieee80211_sta_reset_beacon_monitor(sdata); | |
2134 | ||
2135 | mod_timer(&ifmgd->conn_mon_timer, | |
2136 | round_jiffies_up(jiffies + | |
2137 | IEEE80211_CONNECTION_IDLE_TIME)); | |
133d40f9 | 2138 | out: |
133d40f9 | 2139 | mutex_unlock(&local->mtx); |
4e5ff376 FF |
2140 | } |
2141 | ||
02219b3a JB |
2142 | static void ieee80211_sta_tx_wmm_ac_notify(struct ieee80211_sub_if_data *sdata, |
2143 | struct ieee80211_hdr *hdr, | |
2144 | u16 tx_time) | |
2145 | { | |
2146 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
2147 | u16 tid = *ieee80211_get_qos_ctl(hdr) & IEEE80211_QOS_CTL_TID_MASK; | |
2148 | int ac = ieee80211_ac_from_tid(tid); | |
2149 | struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac]; | |
2150 | unsigned long now = jiffies; | |
2151 | ||
2152 | if (likely(!tx_tspec->admitted_time)) | |
2153 | return; | |
2154 | ||
2155 | if (time_after(now, tx_tspec->time_slice_start + HZ)) { | |
2156 | tx_tspec->consumed_tx_time = 0; | |
2157 | tx_tspec->time_slice_start = now; | |
2158 | ||
2159 | if (tx_tspec->downgraded) { | |
2160 | tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE; | |
2161 | schedule_delayed_work(&ifmgd->tx_tspec_wk, 0); | |
2162 | } | |
2163 | } | |
2164 | ||
2165 | if (tx_tspec->downgraded) | |
2166 | return; | |
2167 | ||
2168 | tx_tspec->consumed_tx_time += tx_time; | |
2169 | ||
2170 | if (tx_tspec->consumed_tx_time >= tx_tspec->admitted_time) { | |
2171 | tx_tspec->downgraded = true; | |
2172 | tx_tspec->action = TX_TSPEC_ACTION_DOWNGRADE; | |
2173 | schedule_delayed_work(&ifmgd->tx_tspec_wk, 0); | |
2174 | } | |
2175 | } | |
2176 | ||
4e5ff376 | 2177 | void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata, |
02219b3a | 2178 | struct ieee80211_hdr *hdr, bool ack, u16 tx_time) |
4e5ff376 | 2179 | { |
02219b3a JB |
2180 | ieee80211_sta_tx_wmm_ac_notify(sdata, hdr, tx_time); |
2181 | ||
75706d0e | 2182 | if (!ieee80211_is_data(hdr->frame_control)) |
4e5ff376 FF |
2183 | return; |
2184 | ||
4e5ff376 FF |
2185 | if (ieee80211_is_nullfunc(hdr->frame_control) && |
2186 | sdata->u.mgd.probe_send_count > 0) { | |
04ac3c0e | 2187 | if (ack) |
cab1c7fd | 2188 | ieee80211_sta_reset_conn_monitor(sdata); |
04ac3c0e FF |
2189 | else |
2190 | sdata->u.mgd.nullfunc_failed = true; | |
4e5ff376 | 2191 | ieee80211_queue_work(&sdata->local->hw, &sdata->work); |
cab1c7fd | 2192 | return; |
4e5ff376 | 2193 | } |
cab1c7fd WD |
2194 | |
2195 | if (ack) | |
2196 | ieee80211_sta_reset_conn_monitor(sdata); | |
4e5ff376 FF |
2197 | } |
2198 | ||
a43abf29 ML |
2199 | static void ieee80211_mgd_probe_ap_send(struct ieee80211_sub_if_data *sdata) |
2200 | { | |
2201 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
2202 | const u8 *ssid; | |
f01a067d | 2203 | u8 *dst = ifmgd->associated->bssid; |
180205bd | 2204 | u8 unicast_limit = max(1, max_probe_tries - 3); |
f01a067d LR |
2205 | |
2206 | /* | |
2207 | * Try sending broadcast probe requests for the last three | |
2208 | * probe requests after the first ones failed since some | |
2209 | * buggy APs only support broadcast probe requests. | |
2210 | */ | |
2211 | if (ifmgd->probe_send_count >= unicast_limit) | |
2212 | dst = NULL; | |
a43abf29 | 2213 | |
4e5ff376 FF |
2214 | /* |
2215 | * When the hardware reports an accurate Tx ACK status, it's | |
2216 | * better to send a nullfunc frame instead of a probe request, | |
2217 | * as it will kick us off the AP quickly if we aren't associated | |
2218 | * anymore. The timeout will be reset if the frame is ACKed by | |
2219 | * the AP. | |
2220 | */ | |
992e68bf SD |
2221 | ifmgd->probe_send_count++; |
2222 | ||
04ac3c0e FF |
2223 | if (sdata->local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) { |
2224 | ifmgd->nullfunc_failed = false; | |
4e5ff376 | 2225 | ieee80211_send_nullfunc(sdata->local, sdata, 0); |
04ac3c0e | 2226 | } else { |
88c868c4 SG |
2227 | int ssid_len; |
2228 | ||
9caf0364 | 2229 | rcu_read_lock(); |
4e5ff376 | 2230 | ssid = ieee80211_bss_get_ie(ifmgd->associated, WLAN_EID_SSID); |
88c868c4 SG |
2231 | if (WARN_ON_ONCE(ssid == NULL)) |
2232 | ssid_len = 0; | |
2233 | else | |
2234 | ssid_len = ssid[1]; | |
2235 | ||
a344d677 JB |
2236 | ieee80211_send_probe_req(sdata, sdata->vif.addr, NULL, |
2237 | ssid + 2, ssid_len, NULL, | |
1672c0e3 | 2238 | 0, (u32) -1, true, 0, |
55de908a | 2239 | ifmgd->associated->channel, false); |
9caf0364 | 2240 | rcu_read_unlock(); |
4e5ff376 | 2241 | } |
a43abf29 | 2242 | |
180205bd | 2243 | ifmgd->probe_timeout = jiffies + msecs_to_jiffies(probe_wait_ms); |
8d61ffa5 | 2244 | run_again(sdata, ifmgd->probe_timeout); |
a43abf29 ML |
2245 | } |
2246 | ||
b291ba11 JB |
2247 | static void ieee80211_mgd_probe_ap(struct ieee80211_sub_if_data *sdata, |
2248 | bool beacon) | |
04de8381 | 2249 | { |
04de8381 | 2250 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
b291ba11 | 2251 | bool already = false; |
34bfc411 | 2252 | |
9607e6b6 | 2253 | if (!ieee80211_sdata_running(sdata)) |
0e2b6286 JB |
2254 | return; |
2255 | ||
8d61ffa5 | 2256 | sdata_lock(sdata); |
77fdaa12 JB |
2257 | |
2258 | if (!ifmgd->associated) | |
2259 | goto out; | |
2260 | ||
133d40f9 SG |
2261 | mutex_lock(&sdata->local->mtx); |
2262 | ||
2263 | if (sdata->local->tmp_channel || sdata->local->scanning) { | |
2264 | mutex_unlock(&sdata->local->mtx); | |
2265 | goto out; | |
2266 | } | |
2267 | ||
a13fbe54 | 2268 | if (beacon) { |
bdcbd8e0 | 2269 | mlme_dbg_ratelimited(sdata, |
59c1ec2b BG |
2270 | "detected beacon loss from AP (missed %d beacons) - probing\n", |
2271 | beacon_loss_count); | |
bdcbd8e0 | 2272 | |
98f03342 | 2273 | ieee80211_cqm_beacon_loss_notify(&sdata->vif, GFP_KERNEL); |
a13fbe54 | 2274 | } |
04de8381 | 2275 | |
b291ba11 JB |
2276 | /* |
2277 | * The driver/our work has already reported this event or the | |
2278 | * connection monitoring has kicked in and we have already sent | |
2279 | * a probe request. Or maybe the AP died and the driver keeps | |
2280 | * reporting until we disassociate... | |
2281 | * | |
2282 | * In either case we have to ignore the current call to this | |
2283 | * function (except for setting the correct probe reason bit) | |
2284 | * because otherwise we would reset the timer every time and | |
2285 | * never check whether we received a probe response! | |
2286 | */ | |
392b9ffb | 2287 | if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL) |
b291ba11 JB |
2288 | already = true; |
2289 | ||
12b5f34d EP |
2290 | ifmgd->flags |= IEEE80211_STA_CONNECTION_POLL; |
2291 | ||
133d40f9 SG |
2292 | mutex_unlock(&sdata->local->mtx); |
2293 | ||
b291ba11 JB |
2294 | if (already) |
2295 | goto out; | |
2296 | ||
4e751843 JB |
2297 | mutex_lock(&sdata->local->iflist_mtx); |
2298 | ieee80211_recalc_ps(sdata->local, -1); | |
2299 | mutex_unlock(&sdata->local->iflist_mtx); | |
2300 | ||
a43abf29 ML |
2301 | ifmgd->probe_send_count = 0; |
2302 | ieee80211_mgd_probe_ap_send(sdata); | |
77fdaa12 | 2303 | out: |
8d61ffa5 | 2304 | sdata_unlock(sdata); |
04de8381 KV |
2305 | } |
2306 | ||
a619a4c0 JO |
2307 | struct sk_buff *ieee80211_ap_probereq_get(struct ieee80211_hw *hw, |
2308 | struct ieee80211_vif *vif) | |
2309 | { | |
2310 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
2311 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
d9b3b28b | 2312 | struct cfg80211_bss *cbss; |
a619a4c0 JO |
2313 | struct sk_buff *skb; |
2314 | const u8 *ssid; | |
88c868c4 | 2315 | int ssid_len; |
a619a4c0 JO |
2316 | |
2317 | if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION)) | |
2318 | return NULL; | |
2319 | ||
8d61ffa5 | 2320 | sdata_assert_lock(sdata); |
a619a4c0 | 2321 | |
d9b3b28b EP |
2322 | if (ifmgd->associated) |
2323 | cbss = ifmgd->associated; | |
2324 | else if (ifmgd->auth_data) | |
2325 | cbss = ifmgd->auth_data->bss; | |
2326 | else if (ifmgd->assoc_data) | |
2327 | cbss = ifmgd->assoc_data->bss; | |
2328 | else | |
a619a4c0 JO |
2329 | return NULL; |
2330 | ||
9caf0364 | 2331 | rcu_read_lock(); |
d9b3b28b | 2332 | ssid = ieee80211_bss_get_ie(cbss, WLAN_EID_SSID); |
88c868c4 SG |
2333 | if (WARN_ON_ONCE(ssid == NULL)) |
2334 | ssid_len = 0; | |
2335 | else | |
2336 | ssid_len = ssid[1]; | |
2337 | ||
a344d677 | 2338 | skb = ieee80211_build_probe_req(sdata, sdata->vif.addr, cbss->bssid, |
55de908a | 2339 | (u32) -1, cbss->channel, |
6b77863b | 2340 | ssid + 2, ssid_len, |
85a237fe | 2341 | NULL, 0, true); |
9caf0364 | 2342 | rcu_read_unlock(); |
a619a4c0 JO |
2343 | |
2344 | return skb; | |
2345 | } | |
2346 | EXPORT_SYMBOL(ieee80211_ap_probereq_get); | |
2347 | ||
a90faa9d EG |
2348 | static void ieee80211_report_disconnect(struct ieee80211_sub_if_data *sdata, |
2349 | const u8 *buf, size_t len, bool tx, | |
2350 | u16 reason) | |
2351 | { | |
2352 | struct ieee80211_event event = { | |
2353 | .type = MLME_EVENT, | |
2354 | .u.mlme.data = tx ? DEAUTH_TX_EVENT : DEAUTH_RX_EVENT, | |
2355 | .u.mlme.reason = reason, | |
2356 | }; | |
2357 | ||
2358 | if (tx) | |
2359 | cfg80211_tx_mlme_mgmt(sdata->dev, buf, len); | |
2360 | else | |
2361 | cfg80211_rx_mlme_mgmt(sdata->dev, buf, len); | |
2362 | ||
2363 | drv_event_callback(sdata->local, sdata, &event); | |
2364 | } | |
2365 | ||
eef9e54c | 2366 | static void __ieee80211_disconnect(struct ieee80211_sub_if_data *sdata) |
1e4dcd01 | 2367 | { |
59af6928 | 2368 | struct ieee80211_local *local = sdata->local; |
1e4dcd01 | 2369 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
6ae16775 | 2370 | u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN]; |
1e4dcd01 | 2371 | |
8d61ffa5 | 2372 | sdata_lock(sdata); |
1e4dcd01 | 2373 | if (!ifmgd->associated) { |
8d61ffa5 | 2374 | sdata_unlock(sdata); |
1e4dcd01 JO |
2375 | return; |
2376 | } | |
2377 | ||
37ad3888 JB |
2378 | ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, |
2379 | WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, | |
eef9e54c | 2380 | true, frame_buf); |
59af6928 | 2381 | mutex_lock(&local->mtx); |
7578d575 | 2382 | sdata->vif.csa_active = false; |
0c21e632 | 2383 | ifmgd->csa_waiting_bcn = false; |
a46992b4 LC |
2384 | if (sdata->csa_block_tx) { |
2385 | ieee80211_wake_vif_queues(local, sdata, | |
2386 | IEEE80211_QUEUE_STOP_REASON_CSA); | |
2387 | sdata->csa_block_tx = false; | |
2388 | } | |
59af6928 | 2389 | mutex_unlock(&local->mtx); |
7da7cc1d | 2390 | |
a90faa9d EG |
2391 | ieee80211_report_disconnect(sdata, frame_buf, sizeof(frame_buf), true, |
2392 | WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY); | |
2393 | ||
8d61ffa5 | 2394 | sdata_unlock(sdata); |
1e4dcd01 JO |
2395 | } |
2396 | ||
cc74c0c7 | 2397 | static void ieee80211_beacon_connection_loss_work(struct work_struct *work) |
b291ba11 JB |
2398 | { |
2399 | struct ieee80211_sub_if_data *sdata = | |
2400 | container_of(work, struct ieee80211_sub_if_data, | |
1e4dcd01 | 2401 | u.mgd.beacon_connection_loss_work); |
a85e1d55 PS |
2402 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
2403 | struct sta_info *sta; | |
2404 | ||
2405 | if (ifmgd->associated) { | |
30fa9047 | 2406 | rcu_read_lock(); |
a85e1d55 PS |
2407 | sta = sta_info_get(sdata, ifmgd->bssid); |
2408 | if (sta) | |
2409 | sta->beacon_loss_count++; | |
30fa9047 | 2410 | rcu_read_unlock(); |
a85e1d55 | 2411 | } |
b291ba11 | 2412 | |
682bd38b | 2413 | if (ifmgd->connection_loss) { |
882a7c69 JB |
2414 | sdata_info(sdata, "Connection to AP %pM lost\n", |
2415 | ifmgd->bssid); | |
eef9e54c | 2416 | __ieee80211_disconnect(sdata); |
882a7c69 | 2417 | } else { |
1e4dcd01 | 2418 | ieee80211_mgd_probe_ap(sdata, true); |
882a7c69 JB |
2419 | } |
2420 | } | |
2421 | ||
2422 | static void ieee80211_csa_connection_drop_work(struct work_struct *work) | |
2423 | { | |
2424 | struct ieee80211_sub_if_data *sdata = | |
2425 | container_of(work, struct ieee80211_sub_if_data, | |
2426 | u.mgd.csa_connection_drop_work); | |
2427 | ||
eef9e54c | 2428 | __ieee80211_disconnect(sdata); |
b291ba11 JB |
2429 | } |
2430 | ||
04de8381 KV |
2431 | void ieee80211_beacon_loss(struct ieee80211_vif *vif) |
2432 | { | |
2433 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
1e4dcd01 | 2434 | struct ieee80211_hw *hw = &sdata->local->hw; |
04de8381 | 2435 | |
b5878a2d JB |
2436 | trace_api_beacon_loss(sdata); |
2437 | ||
682bd38b | 2438 | sdata->u.mgd.connection_loss = false; |
1e4dcd01 | 2439 | ieee80211_queue_work(hw, &sdata->u.mgd.beacon_connection_loss_work); |
04de8381 KV |
2440 | } |
2441 | EXPORT_SYMBOL(ieee80211_beacon_loss); | |
2442 | ||
1e4dcd01 JO |
2443 | void ieee80211_connection_loss(struct ieee80211_vif *vif) |
2444 | { | |
2445 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
2446 | struct ieee80211_hw *hw = &sdata->local->hw; | |
2447 | ||
b5878a2d JB |
2448 | trace_api_connection_loss(sdata); |
2449 | ||
682bd38b | 2450 | sdata->u.mgd.connection_loss = true; |
1e4dcd01 JO |
2451 | ieee80211_queue_work(hw, &sdata->u.mgd.beacon_connection_loss_work); |
2452 | } | |
2453 | EXPORT_SYMBOL(ieee80211_connection_loss); | |
2454 | ||
2455 | ||
66e67e41 JB |
2456 | static void ieee80211_destroy_auth_data(struct ieee80211_sub_if_data *sdata, |
2457 | bool assoc) | |
2458 | { | |
2459 | struct ieee80211_mgd_auth_data *auth_data = sdata->u.mgd.auth_data; | |
2460 | ||
8d61ffa5 | 2461 | sdata_assert_lock(sdata); |
66e67e41 | 2462 | |
66e67e41 | 2463 | if (!assoc) { |
c1e140bf EG |
2464 | /* |
2465 | * we are not authenticated yet, the only timer that could be | |
2466 | * running is the timeout for the authentication response which | |
2467 | * which is not relevant anymore. | |
2468 | */ | |
2469 | del_timer_sync(&sdata->u.mgd.timer); | |
66e67e41 JB |
2470 | sta_info_destroy_addr(sdata, auth_data->bss->bssid); |
2471 | ||
2472 | memset(sdata->u.mgd.bssid, 0, ETH_ALEN); | |
2473 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID); | |
028e8da0 | 2474 | sdata->u.mgd.flags = 0; |
34a3740d | 2475 | mutex_lock(&sdata->local->mtx); |
55de908a | 2476 | ieee80211_vif_release_channel(sdata); |
34a3740d | 2477 | mutex_unlock(&sdata->local->mtx); |
66e67e41 JB |
2478 | } |
2479 | ||
5b112d3d | 2480 | cfg80211_put_bss(sdata->local->hw.wiphy, auth_data->bss); |
66e67e41 JB |
2481 | kfree(auth_data); |
2482 | sdata->u.mgd.auth_data = NULL; | |
2483 | } | |
2484 | ||
2485 | static void ieee80211_auth_challenge(struct ieee80211_sub_if_data *sdata, | |
2486 | struct ieee80211_mgmt *mgmt, size_t len) | |
2487 | { | |
1672c0e3 | 2488 | struct ieee80211_local *local = sdata->local; |
66e67e41 JB |
2489 | struct ieee80211_mgd_auth_data *auth_data = sdata->u.mgd.auth_data; |
2490 | u8 *pos; | |
2491 | struct ieee802_11_elems elems; | |
1672c0e3 | 2492 | u32 tx_flags = 0; |
66e67e41 JB |
2493 | |
2494 | pos = mgmt->u.auth.variable; | |
b2e506bf | 2495 | ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), false, &elems); |
66e67e41 JB |
2496 | if (!elems.challenge) |
2497 | return; | |
2498 | auth_data->expected_transaction = 4; | |
a1845fc7 | 2499 | drv_mgd_prepare_tx(sdata->local, sdata); |
1672c0e3 JB |
2500 | if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) |
2501 | tx_flags = IEEE80211_TX_CTL_REQ_TX_STATUS | | |
2502 | IEEE80211_TX_INTFL_MLME_CONN_TX; | |
700e8ea6 | 2503 | ieee80211_send_auth(sdata, 3, auth_data->algorithm, 0, |
66e67e41 JB |
2504 | elems.challenge - 2, elems.challenge_len + 2, |
2505 | auth_data->bss->bssid, auth_data->bss->bssid, | |
2506 | auth_data->key, auth_data->key_len, | |
1672c0e3 | 2507 | auth_data->key_idx, tx_flags); |
66e67e41 JB |
2508 | } |
2509 | ||
8d61ffa5 JB |
2510 | static void ieee80211_rx_mgmt_auth(struct ieee80211_sub_if_data *sdata, |
2511 | struct ieee80211_mgmt *mgmt, size_t len) | |
66e67e41 JB |
2512 | { |
2513 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
2514 | u8 bssid[ETH_ALEN]; | |
2515 | u16 auth_alg, auth_transaction, status_code; | |
2516 | struct sta_info *sta; | |
a9409093 EG |
2517 | struct ieee80211_event event = { |
2518 | .type = MLME_EVENT, | |
2519 | .u.mlme.data = AUTH_EVENT, | |
2520 | }; | |
66e67e41 | 2521 | |
8d61ffa5 | 2522 | sdata_assert_lock(sdata); |
66e67e41 JB |
2523 | |
2524 | if (len < 24 + 6) | |
8d61ffa5 | 2525 | return; |
66e67e41 JB |
2526 | |
2527 | if (!ifmgd->auth_data || ifmgd->auth_data->done) | |
8d61ffa5 | 2528 | return; |
66e67e41 JB |
2529 | |
2530 | memcpy(bssid, ifmgd->auth_data->bss->bssid, ETH_ALEN); | |
2531 | ||
b203ca39 | 2532 | if (!ether_addr_equal(bssid, mgmt->bssid)) |
8d61ffa5 | 2533 | return; |
66e67e41 JB |
2534 | |
2535 | auth_alg = le16_to_cpu(mgmt->u.auth.auth_alg); | |
2536 | auth_transaction = le16_to_cpu(mgmt->u.auth.auth_transaction); | |
2537 | status_code = le16_to_cpu(mgmt->u.auth.status_code); | |
2538 | ||
2539 | if (auth_alg != ifmgd->auth_data->algorithm || | |
0f4126e8 JM |
2540 | auth_transaction != ifmgd->auth_data->expected_transaction) { |
2541 | sdata_info(sdata, "%pM unexpected authentication state: alg %d (expected %d) transact %d (expected %d)\n", | |
2542 | mgmt->sa, auth_alg, ifmgd->auth_data->algorithm, | |
2543 | auth_transaction, | |
2544 | ifmgd->auth_data->expected_transaction); | |
8d61ffa5 | 2545 | return; |
0f4126e8 | 2546 | } |
66e67e41 JB |
2547 | |
2548 | if (status_code != WLAN_STATUS_SUCCESS) { | |
bdcbd8e0 JB |
2549 | sdata_info(sdata, "%pM denied authentication (status %d)\n", |
2550 | mgmt->sa, status_code); | |
dac211ec | 2551 | ieee80211_destroy_auth_data(sdata, false); |
6ff57cf8 | 2552 | cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len); |
a9409093 EG |
2553 | event.u.mlme.status = MLME_DENIED; |
2554 | event.u.mlme.reason = status_code; | |
2555 | drv_event_callback(sdata->local, sdata, &event); | |
8d61ffa5 | 2556 | return; |
66e67e41 JB |
2557 | } |
2558 | ||
2559 | switch (ifmgd->auth_data->algorithm) { | |
2560 | case WLAN_AUTH_OPEN: | |
2561 | case WLAN_AUTH_LEAP: | |
2562 | case WLAN_AUTH_FT: | |
6b8ece3a | 2563 | case WLAN_AUTH_SAE: |
66e67e41 JB |
2564 | break; |
2565 | case WLAN_AUTH_SHARED_KEY: | |
2566 | if (ifmgd->auth_data->expected_transaction != 4) { | |
2567 | ieee80211_auth_challenge(sdata, mgmt, len); | |
2568 | /* need another frame */ | |
8d61ffa5 | 2569 | return; |
66e67e41 JB |
2570 | } |
2571 | break; | |
2572 | default: | |
2573 | WARN_ONCE(1, "invalid auth alg %d", | |
2574 | ifmgd->auth_data->algorithm); | |
8d61ffa5 | 2575 | return; |
66e67e41 JB |
2576 | } |
2577 | ||
a9409093 EG |
2578 | event.u.mlme.status = MLME_SUCCESS; |
2579 | drv_event_callback(sdata->local, sdata, &event); | |
bdcbd8e0 | 2580 | sdata_info(sdata, "authenticated\n"); |
66e67e41 JB |
2581 | ifmgd->auth_data->done = true; |
2582 | ifmgd->auth_data->timeout = jiffies + IEEE80211_AUTH_WAIT_ASSOC; | |
89afe614 | 2583 | ifmgd->auth_data->timeout_started = true; |
8d61ffa5 | 2584 | run_again(sdata, ifmgd->auth_data->timeout); |
66e67e41 | 2585 | |
6b8ece3a JM |
2586 | if (ifmgd->auth_data->algorithm == WLAN_AUTH_SAE && |
2587 | ifmgd->auth_data->expected_transaction != 2) { | |
2588 | /* | |
2589 | * Report auth frame to user space for processing since another | |
2590 | * round of Authentication frames is still needed. | |
2591 | */ | |
6ff57cf8 | 2592 | cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len); |
8d61ffa5 | 2593 | return; |
6b8ece3a JM |
2594 | } |
2595 | ||
66e67e41 JB |
2596 | /* move station state to auth */ |
2597 | mutex_lock(&sdata->local->sta_mtx); | |
2598 | sta = sta_info_get(sdata, bssid); | |
2599 | if (!sta) { | |
2600 | WARN_ONCE(1, "%s: STA %pM not found", sdata->name, bssid); | |
2601 | goto out_err; | |
2602 | } | |
2603 | if (sta_info_move_state(sta, IEEE80211_STA_AUTH)) { | |
bdcbd8e0 | 2604 | sdata_info(sdata, "failed moving %pM to auth\n", bssid); |
66e67e41 JB |
2605 | goto out_err; |
2606 | } | |
2607 | mutex_unlock(&sdata->local->sta_mtx); | |
2608 | ||
6ff57cf8 | 2609 | cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len); |
8d61ffa5 | 2610 | return; |
66e67e41 JB |
2611 | out_err: |
2612 | mutex_unlock(&sdata->local->sta_mtx); | |
2613 | /* ignore frame -- wait for timeout */ | |
66e67e41 JB |
2614 | } |
2615 | ||
dfa1ad29 CO |
2616 | #define case_WLAN(type) \ |
2617 | case WLAN_REASON_##type: return #type | |
2618 | ||
2619 | static const char *ieee80211_get_reason_code_string(u16 reason_code) | |
2620 | { | |
2621 | switch (reason_code) { | |
2622 | case_WLAN(UNSPECIFIED); | |
2623 | case_WLAN(PREV_AUTH_NOT_VALID); | |
2624 | case_WLAN(DEAUTH_LEAVING); | |
2625 | case_WLAN(DISASSOC_DUE_TO_INACTIVITY); | |
2626 | case_WLAN(DISASSOC_AP_BUSY); | |
2627 | case_WLAN(CLASS2_FRAME_FROM_NONAUTH_STA); | |
2628 | case_WLAN(CLASS3_FRAME_FROM_NONASSOC_STA); | |
2629 | case_WLAN(DISASSOC_STA_HAS_LEFT); | |
2630 | case_WLAN(STA_REQ_ASSOC_WITHOUT_AUTH); | |
2631 | case_WLAN(DISASSOC_BAD_POWER); | |
2632 | case_WLAN(DISASSOC_BAD_SUPP_CHAN); | |
2633 | case_WLAN(INVALID_IE); | |
2634 | case_WLAN(MIC_FAILURE); | |
2635 | case_WLAN(4WAY_HANDSHAKE_TIMEOUT); | |
2636 | case_WLAN(GROUP_KEY_HANDSHAKE_TIMEOUT); | |
2637 | case_WLAN(IE_DIFFERENT); | |
2638 | case_WLAN(INVALID_GROUP_CIPHER); | |
2639 | case_WLAN(INVALID_PAIRWISE_CIPHER); | |
2640 | case_WLAN(INVALID_AKMP); | |
2641 | case_WLAN(UNSUPP_RSN_VERSION); | |
2642 | case_WLAN(INVALID_RSN_IE_CAP); | |
2643 | case_WLAN(IEEE8021X_FAILED); | |
2644 | case_WLAN(CIPHER_SUITE_REJECTED); | |
2645 | case_WLAN(DISASSOC_UNSPECIFIED_QOS); | |
2646 | case_WLAN(DISASSOC_QAP_NO_BANDWIDTH); | |
2647 | case_WLAN(DISASSOC_LOW_ACK); | |
2648 | case_WLAN(DISASSOC_QAP_EXCEED_TXOP); | |
2649 | case_WLAN(QSTA_LEAVE_QBSS); | |
2650 | case_WLAN(QSTA_NOT_USE); | |
2651 | case_WLAN(QSTA_REQUIRE_SETUP); | |
2652 | case_WLAN(QSTA_TIMEOUT); | |
2653 | case_WLAN(QSTA_CIPHER_NOT_SUPP); | |
2654 | case_WLAN(MESH_PEER_CANCELED); | |
2655 | case_WLAN(MESH_MAX_PEERS); | |
2656 | case_WLAN(MESH_CONFIG); | |
2657 | case_WLAN(MESH_CLOSE); | |
2658 | case_WLAN(MESH_MAX_RETRIES); | |
2659 | case_WLAN(MESH_CONFIRM_TIMEOUT); | |
2660 | case_WLAN(MESH_INVALID_GTK); | |
2661 | case_WLAN(MESH_INCONSISTENT_PARAM); | |
2662 | case_WLAN(MESH_INVALID_SECURITY); | |
2663 | case_WLAN(MESH_PATH_ERROR); | |
2664 | case_WLAN(MESH_PATH_NOFORWARD); | |
2665 | case_WLAN(MESH_PATH_DEST_UNREACHABLE); | |
2666 | case_WLAN(MAC_EXISTS_IN_MBSS); | |
2667 | case_WLAN(MESH_CHAN_REGULATORY); | |
2668 | case_WLAN(MESH_CHAN); | |
2669 | default: return "<unknown>"; | |
2670 | } | |
2671 | } | |
66e67e41 | 2672 | |
8d61ffa5 JB |
2673 | static void ieee80211_rx_mgmt_deauth(struct ieee80211_sub_if_data *sdata, |
2674 | struct ieee80211_mgmt *mgmt, size_t len) | |
f0706e82 | 2675 | { |
46900298 | 2676 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
77fdaa12 | 2677 | const u8 *bssid = NULL; |
f0706e82 JB |
2678 | u16 reason_code; |
2679 | ||
8d61ffa5 | 2680 | sdata_assert_lock(sdata); |
66e67e41 | 2681 | |
f4ea83dd | 2682 | if (len < 24 + 2) |
8d61ffa5 | 2683 | return; |
f0706e82 | 2684 | |
66e67e41 | 2685 | if (!ifmgd->associated || |
b203ca39 | 2686 | !ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid)) |
8d61ffa5 | 2687 | return; |
77fdaa12 | 2688 | |
0c1ad2ca | 2689 | bssid = ifmgd->associated->bssid; |
f0706e82 JB |
2690 | |
2691 | reason_code = le16_to_cpu(mgmt->u.deauth.reason_code); | |
2692 | ||
dfa1ad29 CO |
2693 | sdata_info(sdata, "deauthenticated from %pM (Reason: %u=%s)\n", |
2694 | bssid, reason_code, ieee80211_get_reason_code_string(reason_code)); | |
77fdaa12 | 2695 | |
37ad3888 JB |
2696 | ieee80211_set_disassoc(sdata, 0, 0, false, NULL); |
2697 | ||
a90faa9d | 2698 | ieee80211_report_disconnect(sdata, (u8 *)mgmt, len, false, reason_code); |
f0706e82 JB |
2699 | } |
2700 | ||
2701 | ||
8d61ffa5 JB |
2702 | static void ieee80211_rx_mgmt_disassoc(struct ieee80211_sub_if_data *sdata, |
2703 | struct ieee80211_mgmt *mgmt, size_t len) | |
f0706e82 | 2704 | { |
46900298 | 2705 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
f0706e82 JB |
2706 | u16 reason_code; |
2707 | ||
8d61ffa5 | 2708 | sdata_assert_lock(sdata); |
77fdaa12 | 2709 | |
66e67e41 | 2710 | if (len < 24 + 2) |
8d61ffa5 | 2711 | return; |
77fdaa12 | 2712 | |
66e67e41 | 2713 | if (!ifmgd->associated || |
b203ca39 | 2714 | !ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid)) |
8d61ffa5 | 2715 | return; |
f0706e82 JB |
2716 | |
2717 | reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code); | |
2718 | ||
bdcbd8e0 JB |
2719 | sdata_info(sdata, "disassociated from %pM (Reason: %u)\n", |
2720 | mgmt->sa, reason_code); | |
f0706e82 | 2721 | |
37ad3888 JB |
2722 | ieee80211_set_disassoc(sdata, 0, 0, false, NULL); |
2723 | ||
a90faa9d | 2724 | ieee80211_report_disconnect(sdata, (u8 *)mgmt, len, false, reason_code); |
f0706e82 JB |
2725 | } |
2726 | ||
c74d084f CL |
2727 | static void ieee80211_get_rates(struct ieee80211_supported_band *sband, |
2728 | u8 *supp_rates, unsigned int supp_rates_len, | |
2729 | u32 *rates, u32 *basic_rates, | |
2730 | bool *have_higher_than_11mbit, | |
2103dec1 SW |
2731 | int *min_rate, int *min_rate_index, |
2732 | int shift, u32 rate_flags) | |
c74d084f CL |
2733 | { |
2734 | int i, j; | |
2735 | ||
2736 | for (i = 0; i < supp_rates_len; i++) { | |
2103dec1 | 2737 | int rate = supp_rates[i] & 0x7f; |
c74d084f CL |
2738 | bool is_basic = !!(supp_rates[i] & 0x80); |
2739 | ||
2103dec1 | 2740 | if ((rate * 5 * (1 << shift)) > 110) |
c74d084f CL |
2741 | *have_higher_than_11mbit = true; |
2742 | ||
2743 | /* | |
2744 | * BSS_MEMBERSHIP_SELECTOR_HT_PHY is defined in 802.11n-2009 | |
2745 | * 7.3.2.2 as a magic value instead of a rate. Hence, skip it. | |
2746 | * | |
2747 | * Note: Even through the membership selector and the basic | |
2748 | * rate flag share the same bit, they are not exactly | |
2749 | * the same. | |
2750 | */ | |
2751 | if (!!(supp_rates[i] & 0x80) && | |
2752 | (supp_rates[i] & 0x7f) == BSS_MEMBERSHIP_SELECTOR_HT_PHY) | |
2753 | continue; | |
2754 | ||
2755 | for (j = 0; j < sband->n_bitrates; j++) { | |
2103dec1 SW |
2756 | struct ieee80211_rate *br; |
2757 | int brate; | |
2758 | ||
2759 | br = &sband->bitrates[j]; | |
2760 | if ((rate_flags & br->flags) != rate_flags) | |
2761 | continue; | |
2762 | ||
2763 | brate = DIV_ROUND_UP(br->bitrate, (1 << shift) * 5); | |
2764 | if (brate == rate) { | |
c74d084f CL |
2765 | *rates |= BIT(j); |
2766 | if (is_basic) | |
2767 | *basic_rates |= BIT(j); | |
2103dec1 SW |
2768 | if ((rate * 5) < *min_rate) { |
2769 | *min_rate = rate * 5; | |
c74d084f CL |
2770 | *min_rate_index = j; |
2771 | } | |
2772 | break; | |
2773 | } | |
2774 | } | |
2775 | } | |
2776 | } | |
f0706e82 | 2777 | |
66e67e41 JB |
2778 | static void ieee80211_destroy_assoc_data(struct ieee80211_sub_if_data *sdata, |
2779 | bool assoc) | |
2780 | { | |
2781 | struct ieee80211_mgd_assoc_data *assoc_data = sdata->u.mgd.assoc_data; | |
2782 | ||
8d61ffa5 | 2783 | sdata_assert_lock(sdata); |
66e67e41 | 2784 | |
66e67e41 | 2785 | if (!assoc) { |
c1e140bf EG |
2786 | /* |
2787 | * we are not associated yet, the only timer that could be | |
2788 | * running is the timeout for the association response which | |
2789 | * which is not relevant anymore. | |
2790 | */ | |
2791 | del_timer_sync(&sdata->u.mgd.timer); | |
66e67e41 JB |
2792 | sta_info_destroy_addr(sdata, assoc_data->bss->bssid); |
2793 | ||
2794 | memset(sdata->u.mgd.bssid, 0, ETH_ALEN); | |
2795 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID); | |
028e8da0 | 2796 | sdata->u.mgd.flags = 0; |
34a3740d | 2797 | mutex_lock(&sdata->local->mtx); |
55de908a | 2798 | ieee80211_vif_release_channel(sdata); |
34a3740d | 2799 | mutex_unlock(&sdata->local->mtx); |
66e67e41 JB |
2800 | } |
2801 | ||
2802 | kfree(assoc_data); | |
2803 | sdata->u.mgd.assoc_data = NULL; | |
2804 | } | |
2805 | ||
2806 | static bool ieee80211_assoc_success(struct ieee80211_sub_if_data *sdata, | |
2807 | struct cfg80211_bss *cbss, | |
af6b6374 | 2808 | struct ieee80211_mgmt *mgmt, size_t len) |
f0706e82 | 2809 | { |
46900298 | 2810 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
471b3efd | 2811 | struct ieee80211_local *local = sdata->local; |
8318d78a | 2812 | struct ieee80211_supported_band *sband; |
f0706e82 | 2813 | struct sta_info *sta; |
af6b6374 | 2814 | u8 *pos; |
af6b6374 | 2815 | u16 capab_info, aid; |
f0706e82 | 2816 | struct ieee802_11_elems elems; |
bda3933a | 2817 | struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf; |
35d865af JB |
2818 | const struct cfg80211_bss_ies *bss_ies = NULL; |
2819 | struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data; | |
ae5eb026 | 2820 | u32 changed = 0; |
c74d084f | 2821 | int err; |
35d865af | 2822 | bool ret; |
f0706e82 | 2823 | |
af6b6374 | 2824 | /* AssocResp and ReassocResp have identical structure */ |
f0706e82 | 2825 | |
f0706e82 | 2826 | aid = le16_to_cpu(mgmt->u.assoc_resp.aid); |
af6b6374 | 2827 | capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info); |
f0706e82 | 2828 | |
1dd84aa2 | 2829 | if ((aid & (BIT(15) | BIT(14))) != (BIT(15) | BIT(14))) |
bdcbd8e0 JB |
2830 | sdata_info(sdata, "invalid AID value 0x%x; bits 15:14 not set\n", |
2831 | aid); | |
1dd84aa2 JB |
2832 | aid &= ~(BIT(15) | BIT(14)); |
2833 | ||
05cb9108 JB |
2834 | ifmgd->broken_ap = false; |
2835 | ||
2836 | if (aid == 0 || aid > IEEE80211_MAX_AID) { | |
bdcbd8e0 JB |
2837 | sdata_info(sdata, "invalid AID value %d (out of range), turn off PS\n", |
2838 | aid); | |
05cb9108 JB |
2839 | aid = 0; |
2840 | ifmgd->broken_ap = true; | |
2841 | } | |
2842 | ||
af6b6374 | 2843 | pos = mgmt->u.assoc_resp.variable; |
b2e506bf | 2844 | ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), false, &elems); |
af6b6374 | 2845 | |
f0706e82 | 2846 | if (!elems.supp_rates) { |
bdcbd8e0 | 2847 | sdata_info(sdata, "no SuppRates element in AssocResp\n"); |
af6b6374 | 2848 | return false; |
f0706e82 JB |
2849 | } |
2850 | ||
46900298 | 2851 | ifmgd->aid = aid; |
9041c1fa AN |
2852 | ifmgd->tdls_chan_switch_prohibited = |
2853 | elems.ext_capab && elems.ext_capab_len >= 5 && | |
2854 | (elems.ext_capab[4] & WLAN_EXT_CAPA5_TDLS_CH_SW_PROHIBITED); | |
f0706e82 | 2855 | |
35d865af JB |
2856 | /* |
2857 | * Some APs are erroneously not including some information in their | |
2858 | * (re)association response frames. Try to recover by using the data | |
2859 | * from the beacon or probe response. This seems to afflict mobile | |
2860 | * 2G/3G/4G wifi routers, reported models include the "Onda PN51T", | |
2861 | * "Vodafone PocketWiFi 2", "ZTE MF60" and a similar T-Mobile device. | |
2862 | */ | |
2863 | if ((assoc_data->wmm && !elems.wmm_param) || | |
2864 | (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT) && | |
2865 | (!elems.ht_cap_elem || !elems.ht_operation)) || | |
2866 | (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) && | |
2867 | (!elems.vht_cap_elem || !elems.vht_operation))) { | |
2868 | const struct cfg80211_bss_ies *ies; | |
2869 | struct ieee802_11_elems bss_elems; | |
2870 | ||
2871 | rcu_read_lock(); | |
2872 | ies = rcu_dereference(cbss->ies); | |
2873 | if (ies) | |
2874 | bss_ies = kmemdup(ies, sizeof(*ies) + ies->len, | |
2875 | GFP_ATOMIC); | |
2876 | rcu_read_unlock(); | |
2877 | if (!bss_ies) | |
2878 | return false; | |
2879 | ||
2880 | ieee802_11_parse_elems(bss_ies->data, bss_ies->len, | |
2881 | false, &bss_elems); | |
2882 | if (assoc_data->wmm && | |
2883 | !elems.wmm_param && bss_elems.wmm_param) { | |
2884 | elems.wmm_param = bss_elems.wmm_param; | |
2885 | sdata_info(sdata, | |
2886 | "AP bug: WMM param missing from AssocResp\n"); | |
2887 | } | |
2888 | ||
2889 | /* | |
2890 | * Also check if we requested HT/VHT, otherwise the AP doesn't | |
2891 | * have to include the IEs in the (re)association response. | |
2892 | */ | |
2893 | if (!elems.ht_cap_elem && bss_elems.ht_cap_elem && | |
2894 | !(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) { | |
2895 | elems.ht_cap_elem = bss_elems.ht_cap_elem; | |
2896 | sdata_info(sdata, | |
2897 | "AP bug: HT capability missing from AssocResp\n"); | |
2898 | } | |
2899 | if (!elems.ht_operation && bss_elems.ht_operation && | |
2900 | !(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) { | |
2901 | elems.ht_operation = bss_elems.ht_operation; | |
2902 | sdata_info(sdata, | |
2903 | "AP bug: HT operation missing from AssocResp\n"); | |
2904 | } | |
2905 | if (!elems.vht_cap_elem && bss_elems.vht_cap_elem && | |
2906 | !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) { | |
2907 | elems.vht_cap_elem = bss_elems.vht_cap_elem; | |
2908 | sdata_info(sdata, | |
2909 | "AP bug: VHT capa missing from AssocResp\n"); | |
2910 | } | |
2911 | if (!elems.vht_operation && bss_elems.vht_operation && | |
2912 | !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) { | |
2913 | elems.vht_operation = bss_elems.vht_operation; | |
2914 | sdata_info(sdata, | |
2915 | "AP bug: VHT operation missing from AssocResp\n"); | |
2916 | } | |
2917 | } | |
2918 | ||
30eb1dc2 JB |
2919 | /* |
2920 | * We previously checked these in the beacon/probe response, so | |
2921 | * they should be present here. This is just a safety net. | |
2922 | */ | |
2923 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT) && | |
2924 | (!elems.wmm_param || !elems.ht_cap_elem || !elems.ht_operation)) { | |
2925 | sdata_info(sdata, | |
35d865af JB |
2926 | "HT AP is missing WMM params or HT capability/operation\n"); |
2927 | ret = false; | |
2928 | goto out; | |
30eb1dc2 JB |
2929 | } |
2930 | ||
2931 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) && | |
2932 | (!elems.vht_cap_elem || !elems.vht_operation)) { | |
2933 | sdata_info(sdata, | |
35d865af JB |
2934 | "VHT AP is missing VHT capability/operation\n"); |
2935 | ret = false; | |
2936 | goto out; | |
30eb1dc2 JB |
2937 | } |
2938 | ||
2a33bee2 GE |
2939 | mutex_lock(&sdata->local->sta_mtx); |
2940 | /* | |
2941 | * station info was already allocated and inserted before | |
2942 | * the association and should be available to us | |
2943 | */ | |
7852e361 | 2944 | sta = sta_info_get(sdata, cbss->bssid); |
2a33bee2 GE |
2945 | if (WARN_ON(!sta)) { |
2946 | mutex_unlock(&sdata->local->sta_mtx); | |
35d865af JB |
2947 | ret = false; |
2948 | goto out; | |
77fdaa12 | 2949 | } |
05e5e883 | 2950 | |
55de908a | 2951 | sband = local->hw.wiphy->bands[ieee80211_get_sdata_band(sdata)]; |
f709fc69 | 2952 | |
30eb1dc2 | 2953 | /* Set up internal HT/VHT capabilities */ |
a8243b72 | 2954 | if (elems.ht_cap_elem && !(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) |
ef96a842 | 2955 | ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband, |
e1a0c6b3 | 2956 | elems.ht_cap_elem, sta); |
64f68e5d | 2957 | |
818255ea MP |
2958 | if (elems.vht_cap_elem && !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) |
2959 | ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband, | |
4a34215e | 2960 | elems.vht_cap_elem, sta); |
818255ea | 2961 | |
30eb1dc2 JB |
2962 | /* |
2963 | * Some APs, e.g. Netgear WNDR3700, report invalid HT operation data | |
2964 | * in their association response, so ignore that data for our own | |
2965 | * configuration. If it changed since the last beacon, we'll get the | |
2966 | * next beacon and update then. | |
2967 | */ | |
1128958d | 2968 | |
bee7f586 JB |
2969 | /* |
2970 | * If an operating mode notification IE is present, override the | |
2971 | * NSS calculation (that would be done in rate_control_rate_init()) | |
2972 | * and use the # of streams from that element. | |
2973 | */ | |
2974 | if (elems.opmode_notif && | |
2975 | !(*elems.opmode_notif & IEEE80211_OPMODE_NOTIF_RX_NSS_TYPE_BF)) { | |
2976 | u8 nss; | |
2977 | ||
2978 | nss = *elems.opmode_notif & IEEE80211_OPMODE_NOTIF_RX_NSS_MASK; | |
2979 | nss >>= IEEE80211_OPMODE_NOTIF_RX_NSS_SHIFT; | |
2980 | nss += 1; | |
2981 | sta->sta.rx_nss = nss; | |
2982 | } | |
2983 | ||
4b7679a5 | 2984 | rate_control_rate_init(sta); |
f0706e82 | 2985 | |
64a8cef4 | 2986 | if (ifmgd->flags & IEEE80211_STA_MFP_ENABLED) { |
c2c98fde | 2987 | set_sta_flag(sta, WLAN_STA_MFP); |
64a8cef4 SJ |
2988 | sta->sta.mfp = true; |
2989 | } else { | |
2990 | sta->sta.mfp = false; | |
2991 | } | |
5394af4d | 2992 | |
a74a8c84 | 2993 | sta->sta.wme = elems.wmm_param; |
ddf4ac53 | 2994 | |
3e4d40fa | 2995 | err = sta_info_move_state(sta, IEEE80211_STA_ASSOC); |
c8987876 JB |
2996 | if (!err && !(ifmgd->flags & IEEE80211_STA_CONTROL_PORT)) |
2997 | err = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED); | |
2998 | if (err) { | |
bdcbd8e0 JB |
2999 | sdata_info(sdata, |
3000 | "failed to move station %pM to desired state\n", | |
3001 | sta->sta.addr); | |
c8987876 JB |
3002 | WARN_ON(__sta_info_destroy(sta)); |
3003 | mutex_unlock(&sdata->local->sta_mtx); | |
35d865af JB |
3004 | ret = false; |
3005 | goto out; | |
c8987876 JB |
3006 | } |
3007 | ||
7852e361 | 3008 | mutex_unlock(&sdata->local->sta_mtx); |
ddf4ac53 | 3009 | |
f2176d72 JO |
3010 | /* |
3011 | * Always handle WMM once after association regardless | |
3012 | * of the first value the AP uses. Setting -1 here has | |
3013 | * that effect because the AP values is an unsigned | |
3014 | * 4-bit value. | |
3015 | */ | |
3016 | ifmgd->wmm_last_param_set = -1; | |
3017 | ||
095d81ce | 3018 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_WMM) && elems.wmm_param) |
4ced3f74 | 3019 | ieee80211_sta_wmm_params(local, sdata, elems.wmm_param, |
60f8b39c | 3020 | elems.wmm_param_len); |
aa837e1d | 3021 | else |
3abead59 JB |
3022 | ieee80211_set_wmm_default(sdata, false); |
3023 | changed |= BSS_CHANGED_QOS; | |
f0706e82 | 3024 | |
60f8b39c JB |
3025 | /* set AID and assoc capability, |
3026 | * ieee80211_set_associated() will tell the driver */ | |
3027 | bss_conf->aid = aid; | |
3028 | bss_conf->assoc_capability = capab_info; | |
0c1ad2ca | 3029 | ieee80211_set_associated(sdata, cbss, changed); |
f0706e82 | 3030 | |
d524215f FF |
3031 | /* |
3032 | * If we're using 4-addr mode, let the AP know that we're | |
3033 | * doing so, so that it can create the STA VLAN on its side | |
3034 | */ | |
3035 | if (ifmgd->use_4addr) | |
3036 | ieee80211_send_4addr_nullfunc(local, sdata); | |
3037 | ||
15b7b062 | 3038 | /* |
b291ba11 JB |
3039 | * Start timer to probe the connection to the AP now. |
3040 | * Also start the timer that will detect beacon loss. | |
15b7b062 | 3041 | */ |
b291ba11 | 3042 | ieee80211_sta_rx_notify(sdata, (struct ieee80211_hdr *)mgmt); |
d3a910a8 | 3043 | ieee80211_sta_reset_beacon_monitor(sdata); |
15b7b062 | 3044 | |
35d865af JB |
3045 | ret = true; |
3046 | out: | |
3047 | kfree(bss_ies); | |
3048 | return ret; | |
f0706e82 JB |
3049 | } |
3050 | ||
8d61ffa5 JB |
3051 | static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata, |
3052 | struct ieee80211_mgmt *mgmt, | |
3053 | size_t len) | |
66e67e41 JB |
3054 | { |
3055 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
3056 | struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data; | |
3057 | u16 capab_info, status_code, aid; | |
3058 | struct ieee802_11_elems elems; | |
b0b6aa2c | 3059 | int ac, uapsd_queues = -1; |
66e67e41 JB |
3060 | u8 *pos; |
3061 | bool reassoc; | |
8d61ffa5 | 3062 | struct cfg80211_bss *bss; |
d0d1a12f EG |
3063 | struct ieee80211_event event = { |
3064 | .type = MLME_EVENT, | |
3065 | .u.mlme.data = ASSOC_EVENT, | |
3066 | }; | |
66e67e41 | 3067 | |
8d61ffa5 | 3068 | sdata_assert_lock(sdata); |
66e67e41 JB |
3069 | |
3070 | if (!assoc_data) | |
8d61ffa5 | 3071 | return; |
b203ca39 | 3072 | if (!ether_addr_equal(assoc_data->bss->bssid, mgmt->bssid)) |
8d61ffa5 | 3073 | return; |
66e67e41 JB |
3074 | |
3075 | /* | |
3076 | * AssocResp and ReassocResp have identical structure, so process both | |
3077 | * of them in this function. | |
3078 | */ | |
3079 | ||
3080 | if (len < 24 + 6) | |
8d61ffa5 | 3081 | return; |
66e67e41 JB |
3082 | |
3083 | reassoc = ieee80211_is_reassoc_req(mgmt->frame_control); | |
3084 | capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info); | |
3085 | status_code = le16_to_cpu(mgmt->u.assoc_resp.status_code); | |
3086 | aid = le16_to_cpu(mgmt->u.assoc_resp.aid); | |
3087 | ||
bdcbd8e0 JB |
3088 | sdata_info(sdata, |
3089 | "RX %sssocResp from %pM (capab=0x%x status=%d aid=%d)\n", | |
3090 | reassoc ? "Rea" : "A", mgmt->sa, | |
3091 | capab_info, status_code, (u16)(aid & ~(BIT(15) | BIT(14)))); | |
66e67e41 JB |
3092 | |
3093 | pos = mgmt->u.assoc_resp.variable; | |
b2e506bf | 3094 | ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), false, &elems); |
66e67e41 JB |
3095 | |
3096 | if (status_code == WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY && | |
79ba1d89 JB |
3097 | elems.timeout_int && |
3098 | elems.timeout_int->type == WLAN_TIMEOUT_ASSOC_COMEBACK) { | |
66e67e41 | 3099 | u32 tu, ms; |
79ba1d89 | 3100 | tu = le32_to_cpu(elems.timeout_int->value); |
66e67e41 | 3101 | ms = tu * 1024 / 1000; |
bdcbd8e0 JB |
3102 | sdata_info(sdata, |
3103 | "%pM rejected association temporarily; comeback duration %u TU (%u ms)\n", | |
3104 | mgmt->sa, tu, ms); | |
66e67e41 | 3105 | assoc_data->timeout = jiffies + msecs_to_jiffies(ms); |
89afe614 | 3106 | assoc_data->timeout_started = true; |
66e67e41 | 3107 | if (ms > IEEE80211_ASSOC_TIMEOUT) |
8d61ffa5 JB |
3108 | run_again(sdata, assoc_data->timeout); |
3109 | return; | |
66e67e41 JB |
3110 | } |
3111 | ||
8d61ffa5 | 3112 | bss = assoc_data->bss; |
66e67e41 JB |
3113 | |
3114 | if (status_code != WLAN_STATUS_SUCCESS) { | |
bdcbd8e0 JB |
3115 | sdata_info(sdata, "%pM denied association (code=%d)\n", |
3116 | mgmt->sa, status_code); | |
66e67e41 | 3117 | ieee80211_destroy_assoc_data(sdata, false); |
d0d1a12f EG |
3118 | event.u.mlme.status = MLME_DENIED; |
3119 | event.u.mlme.reason = status_code; | |
3120 | drv_event_callback(sdata->local, sdata, &event); | |
66e67e41 | 3121 | } else { |
8d61ffa5 | 3122 | if (!ieee80211_assoc_success(sdata, bss, mgmt, len)) { |
66e67e41 | 3123 | /* oops -- internal error -- send timeout for now */ |
10a9109f | 3124 | ieee80211_destroy_assoc_data(sdata, false); |
959867fa | 3125 | cfg80211_assoc_timeout(sdata->dev, bss); |
8d61ffa5 | 3126 | return; |
66e67e41 | 3127 | } |
d0d1a12f EG |
3128 | event.u.mlme.status = MLME_SUCCESS; |
3129 | drv_event_callback(sdata->local, sdata, &event); | |
635d999f | 3130 | sdata_info(sdata, "associated\n"); |
79ebfb85 JB |
3131 | |
3132 | /* | |
3133 | * destroy assoc_data afterwards, as otherwise an idle | |
3134 | * recalc after assoc_data is NULL but before associated | |
3135 | * is set can cause the interface to go idle | |
3136 | */ | |
3137 | ieee80211_destroy_assoc_data(sdata, true); | |
b0b6aa2c EP |
3138 | |
3139 | /* get uapsd queues configuration */ | |
3140 | uapsd_queues = 0; | |
3141 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
3142 | if (sdata->tx_conf[ac].uapsd) | |
3143 | uapsd_queues |= BIT(ac); | |
66e67e41 JB |
3144 | } |
3145 | ||
b0b6aa2c | 3146 | cfg80211_rx_assoc_resp(sdata->dev, bss, (u8 *)mgmt, len, uapsd_queues); |
66e67e41 | 3147 | } |
8e3c1b77 | 3148 | |
98c8fccf | 3149 | static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata, |
8e3c1b77 | 3150 | struct ieee80211_mgmt *mgmt, size_t len, |
98c8fccf | 3151 | struct ieee80211_rx_status *rx_status, |
d45c4172 | 3152 | struct ieee802_11_elems *elems) |
98c8fccf JB |
3153 | { |
3154 | struct ieee80211_local *local = sdata->local; | |
c2b13452 | 3155 | struct ieee80211_bss *bss; |
98c8fccf | 3156 | struct ieee80211_channel *channel; |
56007a02 | 3157 | |
8d61ffa5 | 3158 | sdata_assert_lock(sdata); |
b4f286a1 | 3159 | |
3afc2167 EG |
3160 | channel = ieee80211_get_channel(local->hw.wiphy, rx_status->freq); |
3161 | if (!channel) | |
98c8fccf JB |
3162 | return; |
3163 | ||
98c8fccf | 3164 | bss = ieee80211_bss_info_update(local, rx_status, mgmt, len, elems, |
d45c4172 | 3165 | channel); |
817cee76 | 3166 | if (bss) { |
817cee76 | 3167 | sdata->vif.bss_conf.beacon_rate = bss->beacon_rate; |
d2722f8b | 3168 | ieee80211_rx_bss_put(local, bss); |
817cee76 | 3169 | } |
f0706e82 JB |
3170 | } |
3171 | ||
3172 | ||
f698d856 | 3173 | static void ieee80211_rx_mgmt_probe_resp(struct ieee80211_sub_if_data *sdata, |
af6b6374 | 3174 | struct sk_buff *skb) |
f0706e82 | 3175 | { |
af6b6374 | 3176 | struct ieee80211_mgmt *mgmt = (void *)skb->data; |
15b7b062 | 3177 | struct ieee80211_if_managed *ifmgd; |
af6b6374 JB |
3178 | struct ieee80211_rx_status *rx_status = (void *) skb->cb; |
3179 | size_t baselen, len = skb->len; | |
ae6a44e3 EK |
3180 | struct ieee802_11_elems elems; |
3181 | ||
15b7b062 KV |
3182 | ifmgd = &sdata->u.mgd; |
3183 | ||
8d61ffa5 | 3184 | sdata_assert_lock(sdata); |
77fdaa12 | 3185 | |
b203ca39 | 3186 | if (!ether_addr_equal(mgmt->da, sdata->vif.addr)) |
8e7cdbb6 TW |
3187 | return; /* ignore ProbeResp to foreign address */ |
3188 | ||
ae6a44e3 EK |
3189 | baselen = (u8 *) mgmt->u.probe_resp.variable - (u8 *) mgmt; |
3190 | if (baselen > len) | |
3191 | return; | |
3192 | ||
3193 | ieee802_11_parse_elems(mgmt->u.probe_resp.variable, len - baselen, | |
b2e506bf | 3194 | false, &elems); |
ae6a44e3 | 3195 | |
d45c4172 | 3196 | ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems); |
9859b81e | 3197 | |
77fdaa12 | 3198 | if (ifmgd->associated && |
b203ca39 | 3199 | ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid)) |
4e5ff376 | 3200 | ieee80211_reset_ap_probe(sdata); |
66e67e41 JB |
3201 | |
3202 | if (ifmgd->auth_data && !ifmgd->auth_data->bss->proberesp_ies && | |
b203ca39 | 3203 | ether_addr_equal(mgmt->bssid, ifmgd->auth_data->bss->bssid)) { |
66e67e41 | 3204 | /* got probe response, continue with auth */ |
bdcbd8e0 | 3205 | sdata_info(sdata, "direct probe responded\n"); |
66e67e41 JB |
3206 | ifmgd->auth_data->tries = 0; |
3207 | ifmgd->auth_data->timeout = jiffies; | |
89afe614 | 3208 | ifmgd->auth_data->timeout_started = true; |
8d61ffa5 | 3209 | run_again(sdata, ifmgd->auth_data->timeout); |
66e67e41 | 3210 | } |
f0706e82 JB |
3211 | } |
3212 | ||
d91f36db JB |
3213 | /* |
3214 | * This is the canonical list of information elements we care about, | |
3215 | * the filter code also gives us all changes to the Microsoft OUI | |
c8d65917 SG |
3216 | * (00:50:F2) vendor IE which is used for WMM which we need to track, |
3217 | * as well as the DTPC IE (part of the Cisco OUI) used for signaling | |
3218 | * changes to requested client power. | |
d91f36db JB |
3219 | * |
3220 | * We implement beacon filtering in software since that means we can | |
3221 | * avoid processing the frame here and in cfg80211, and userspace | |
3222 | * will not be able to tell whether the hardware supports it or not. | |
3223 | * | |
3224 | * XXX: This list needs to be dynamic -- userspace needs to be able to | |
3225 | * add items it requires. It also needs to be able to tell us to | |
3226 | * look out for other vendor IEs. | |
3227 | */ | |
3228 | static const u64 care_about_ies = | |
1d4df3a5 JB |
3229 | (1ULL << WLAN_EID_COUNTRY) | |
3230 | (1ULL << WLAN_EID_ERP_INFO) | | |
3231 | (1ULL << WLAN_EID_CHANNEL_SWITCH) | | |
3232 | (1ULL << WLAN_EID_PWR_CONSTRAINT) | | |
3233 | (1ULL << WLAN_EID_HT_CAPABILITY) | | |
074d46d1 | 3234 | (1ULL << WLAN_EID_HT_OPERATION); |
d91f36db | 3235 | |
8d61ffa5 JB |
3236 | static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata, |
3237 | struct ieee80211_mgmt *mgmt, size_t len, | |
3238 | struct ieee80211_rx_status *rx_status) | |
f0706e82 | 3239 | { |
d91f36db | 3240 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
17e4ec14 | 3241 | struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf; |
f0706e82 JB |
3242 | size_t baselen; |
3243 | struct ieee802_11_elems elems; | |
f698d856 | 3244 | struct ieee80211_local *local = sdata->local; |
55de908a JB |
3245 | struct ieee80211_chanctx_conf *chanctx_conf; |
3246 | struct ieee80211_channel *chan; | |
bee7f586 | 3247 | struct sta_info *sta; |
471b3efd | 3248 | u32 changed = 0; |
f87ad637 | 3249 | bool erp_valid; |
7a5158ef | 3250 | u8 erp_value = 0; |
d91f36db | 3251 | u32 ncrc; |
77fdaa12 | 3252 | u8 *bssid; |
8d61ffa5 | 3253 | u8 deauth_buf[IEEE80211_DEAUTH_FRAME_LEN]; |
77fdaa12 | 3254 | |
8d61ffa5 | 3255 | sdata_assert_lock(sdata); |
f0706e82 | 3256 | |
ae6a44e3 EK |
3257 | /* Process beacon from the current BSS */ |
3258 | baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt; | |
3259 | if (baselen > len) | |
8d61ffa5 | 3260 | return; |
ae6a44e3 | 3261 | |
55de908a JB |
3262 | rcu_read_lock(); |
3263 | chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); | |
3264 | if (!chanctx_conf) { | |
3265 | rcu_read_unlock(); | |
8d61ffa5 | 3266 | return; |
55de908a JB |
3267 | } |
3268 | ||
4bf88530 | 3269 | if (rx_status->freq != chanctx_conf->def.chan->center_freq) { |
55de908a | 3270 | rcu_read_unlock(); |
8d61ffa5 | 3271 | return; |
55de908a | 3272 | } |
4bf88530 | 3273 | chan = chanctx_conf->def.chan; |
55de908a | 3274 | rcu_read_unlock(); |
f0706e82 | 3275 | |
c65dd147 | 3276 | if (ifmgd->assoc_data && ifmgd->assoc_data->need_beacon && |
b203ca39 | 3277 | ether_addr_equal(mgmt->bssid, ifmgd->assoc_data->bss->bssid)) { |
66e67e41 | 3278 | ieee802_11_parse_elems(mgmt->u.beacon.variable, |
b2e506bf | 3279 | len - baselen, false, &elems); |
77fdaa12 | 3280 | |
d45c4172 | 3281 | ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems); |
482a9c74 AB |
3282 | if (elems.tim && !elems.parse_error) { |
3283 | const struct ieee80211_tim_ie *tim_ie = elems.tim; | |
3284 | ifmgd->dtim_period = tim_ie->dtim_period; | |
3285 | } | |
989c6505 | 3286 | ifmgd->have_beacon = true; |
c65dd147 | 3287 | ifmgd->assoc_data->need_beacon = false; |
ef429dad JB |
3288 | if (local->hw.flags & IEEE80211_HW_TIMING_BEACON_ONLY) { |
3289 | sdata->vif.bss_conf.sync_tsf = | |
3290 | le64_to_cpu(mgmt->u.beacon.timestamp); | |
3291 | sdata->vif.bss_conf.sync_device_ts = | |
3292 | rx_status->device_timestamp; | |
3293 | if (elems.tim) | |
3294 | sdata->vif.bss_conf.sync_dtim_count = | |
3295 | elems.tim->dtim_count; | |
3296 | else | |
3297 | sdata->vif.bss_conf.sync_dtim_count = 0; | |
3298 | } | |
66e67e41 JB |
3299 | /* continue assoc process */ |
3300 | ifmgd->assoc_data->timeout = jiffies; | |
89afe614 | 3301 | ifmgd->assoc_data->timeout_started = true; |
8d61ffa5 JB |
3302 | run_again(sdata, ifmgd->assoc_data->timeout); |
3303 | return; | |
66e67e41 | 3304 | } |
77fdaa12 | 3305 | |
66e67e41 | 3306 | if (!ifmgd->associated || |
b203ca39 | 3307 | !ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid)) |
8d61ffa5 | 3308 | return; |
66e67e41 | 3309 | bssid = ifmgd->associated->bssid; |
f0706e82 | 3310 | |
17e4ec14 JM |
3311 | /* Track average RSSI from the Beacon frames of the current AP */ |
3312 | ifmgd->last_beacon_signal = rx_status->signal; | |
3313 | if (ifmgd->flags & IEEE80211_STA_RESET_SIGNAL_AVE) { | |
3314 | ifmgd->flags &= ~IEEE80211_STA_RESET_SIGNAL_AVE; | |
3ba06c6f | 3315 | ifmgd->ave_beacon_signal = rx_status->signal * 16; |
17e4ec14 | 3316 | ifmgd->last_cqm_event_signal = 0; |
391a200a | 3317 | ifmgd->count_beacon_signal = 1; |
615f7b9b | 3318 | ifmgd->last_ave_beacon_signal = 0; |
17e4ec14 JM |
3319 | } else { |
3320 | ifmgd->ave_beacon_signal = | |
3321 | (IEEE80211_SIGNAL_AVE_WEIGHT * rx_status->signal * 16 + | |
3322 | (16 - IEEE80211_SIGNAL_AVE_WEIGHT) * | |
3323 | ifmgd->ave_beacon_signal) / 16; | |
391a200a | 3324 | ifmgd->count_beacon_signal++; |
17e4ec14 | 3325 | } |
615f7b9b MV |
3326 | |
3327 | if (ifmgd->rssi_min_thold != ifmgd->rssi_max_thold && | |
3328 | ifmgd->count_beacon_signal >= IEEE80211_SIGNAL_AVE_MIN_COUNT) { | |
3329 | int sig = ifmgd->ave_beacon_signal; | |
3330 | int last_sig = ifmgd->last_ave_beacon_signal; | |
a8182929 EG |
3331 | struct ieee80211_event event = { |
3332 | .type = RSSI_EVENT, | |
3333 | }; | |
615f7b9b MV |
3334 | |
3335 | /* | |
3336 | * if signal crosses either of the boundaries, invoke callback | |
3337 | * with appropriate parameters | |
3338 | */ | |
3339 | if (sig > ifmgd->rssi_max_thold && | |
3340 | (last_sig <= ifmgd->rssi_min_thold || last_sig == 0)) { | |
3341 | ifmgd->last_ave_beacon_signal = sig; | |
a8182929 EG |
3342 | event.u.rssi.data = RSSI_EVENT_HIGH; |
3343 | drv_event_callback(local, sdata, &event); | |
615f7b9b MV |
3344 | } else if (sig < ifmgd->rssi_min_thold && |
3345 | (last_sig >= ifmgd->rssi_max_thold || | |
3346 | last_sig == 0)) { | |
3347 | ifmgd->last_ave_beacon_signal = sig; | |
a8182929 EG |
3348 | event.u.rssi.data = RSSI_EVENT_LOW; |
3349 | drv_event_callback(local, sdata, &event); | |
615f7b9b MV |
3350 | } |
3351 | } | |
3352 | ||
17e4ec14 | 3353 | if (bss_conf->cqm_rssi_thold && |
391a200a | 3354 | ifmgd->count_beacon_signal >= IEEE80211_SIGNAL_AVE_MIN_COUNT && |
ea086359 | 3355 | !(sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)) { |
17e4ec14 JM |
3356 | int sig = ifmgd->ave_beacon_signal / 16; |
3357 | int last_event = ifmgd->last_cqm_event_signal; | |
3358 | int thold = bss_conf->cqm_rssi_thold; | |
3359 | int hyst = bss_conf->cqm_rssi_hyst; | |
3360 | if (sig < thold && | |
3361 | (last_event == 0 || sig < last_event - hyst)) { | |
3362 | ifmgd->last_cqm_event_signal = sig; | |
3363 | ieee80211_cqm_rssi_notify( | |
3364 | &sdata->vif, | |
3365 | NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW, | |
3366 | GFP_KERNEL); | |
3367 | } else if (sig > thold && | |
3368 | (last_event == 0 || sig > last_event + hyst)) { | |
3369 | ifmgd->last_cqm_event_signal = sig; | |
3370 | ieee80211_cqm_rssi_notify( | |
3371 | &sdata->vif, | |
3372 | NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH, | |
3373 | GFP_KERNEL); | |
3374 | } | |
3375 | } | |
3376 | ||
392b9ffb | 3377 | if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL) { |
bdcbd8e0 | 3378 | mlme_dbg_ratelimited(sdata, |
112c31f0 | 3379 | "cancelling AP probe due to a received beacon\n"); |
392b9ffb | 3380 | ieee80211_reset_ap_probe(sdata); |
92778180 JM |
3381 | } |
3382 | ||
b291ba11 JB |
3383 | /* |
3384 | * Push the beacon loss detection into the future since | |
3385 | * we are processing a beacon from the AP just now. | |
3386 | */ | |
d3a910a8 | 3387 | ieee80211_sta_reset_beacon_monitor(sdata); |
b291ba11 | 3388 | |
d91f36db JB |
3389 | ncrc = crc32_be(0, (void *)&mgmt->u.beacon.beacon_int, 4); |
3390 | ncrc = ieee802_11_parse_elems_crc(mgmt->u.beacon.variable, | |
b2e506bf | 3391 | len - baselen, false, &elems, |
d91f36db JB |
3392 | care_about_ies, ncrc); |
3393 | ||
25c9c875 | 3394 | if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) { |
f87ad637 RR |
3395 | bool directed_tim = ieee80211_check_tim(elems.tim, |
3396 | elems.tim_len, | |
3397 | ifmgd->aid); | |
1fb3606b | 3398 | if (directed_tim) { |
572e0012 | 3399 | if (local->hw.conf.dynamic_ps_timeout > 0) { |
70b12f26 RW |
3400 | if (local->hw.conf.flags & IEEE80211_CONF_PS) { |
3401 | local->hw.conf.flags &= ~IEEE80211_CONF_PS; | |
3402 | ieee80211_hw_config(local, | |
3403 | IEEE80211_CONF_CHANGE_PS); | |
3404 | } | |
572e0012 | 3405 | ieee80211_send_nullfunc(local, sdata, 0); |
6f0756a3 | 3406 | } else if (!local->pspolling && sdata->u.mgd.powersave) { |
572e0012 KV |
3407 | local->pspolling = true; |
3408 | ||
3409 | /* | |
3410 | * Here is assumed that the driver will be | |
3411 | * able to send ps-poll frame and receive a | |
3412 | * response even though power save mode is | |
3413 | * enabled, but some drivers might require | |
3414 | * to disable power save here. This needs | |
3415 | * to be investigated. | |
3416 | */ | |
3417 | ieee80211_send_pspoll(local, sdata); | |
3418 | } | |
a97b77b9 VN |
3419 | } |
3420 | } | |
7a5158ef | 3421 | |
488dd7b5 | 3422 | if (sdata->vif.p2p) { |
67baf663 | 3423 | struct ieee80211_p2p_noa_attr noa = {}; |
488dd7b5 JB |
3424 | int ret; |
3425 | ||
3426 | ret = cfg80211_get_p2p_attr(mgmt->u.beacon.variable, | |
3427 | len - baselen, | |
3428 | IEEE80211_P2P_ATTR_ABSENCE_NOTICE, | |
934457ee | 3429 | (u8 *) &noa, sizeof(noa)); |
67baf663 JD |
3430 | if (ret >= 2) { |
3431 | if (sdata->u.mgd.p2p_noa_index != noa.index) { | |
3432 | /* valid noa_attr and index changed */ | |
3433 | sdata->u.mgd.p2p_noa_index = noa.index; | |
3434 | memcpy(&bss_conf->p2p_noa_attr, &noa, sizeof(noa)); | |
3435 | changed |= BSS_CHANGED_P2P_PS; | |
3436 | /* | |
3437 | * make sure we update all information, the CRC | |
3438 | * mechanism doesn't look at P2P attributes. | |
3439 | */ | |
3440 | ifmgd->beacon_crc_valid = false; | |
3441 | } | |
3442 | } else if (sdata->u.mgd.p2p_noa_index != -1) { | |
3443 | /* noa_attr not found and we had valid noa_attr before */ | |
3444 | sdata->u.mgd.p2p_noa_index = -1; | |
3445 | memset(&bss_conf->p2p_noa_attr, 0, sizeof(bss_conf->p2p_noa_attr)); | |
488dd7b5 | 3446 | changed |= BSS_CHANGED_P2P_PS; |
488dd7b5 JB |
3447 | ifmgd->beacon_crc_valid = false; |
3448 | } | |
3449 | } | |
3450 | ||
0c21e632 LC |
3451 | if (ifmgd->csa_waiting_bcn) |
3452 | ieee80211_chswitch_post_beacon(sdata); | |
3453 | ||
2ecc3905 AB |
3454 | /* |
3455 | * Update beacon timing and dtim count on every beacon appearance. This | |
3456 | * will allow the driver to use the most updated values. Do it before | |
3457 | * comparing this one with last received beacon. | |
3458 | * IMPORTANT: These parameters would possibly be out of sync by the time | |
3459 | * the driver will use them. The synchronized view is currently | |
3460 | * guaranteed only in certain callbacks. | |
3461 | */ | |
3462 | if (local->hw.flags & IEEE80211_HW_TIMING_BEACON_ONLY) { | |
3463 | sdata->vif.bss_conf.sync_tsf = | |
3464 | le64_to_cpu(mgmt->u.beacon.timestamp); | |
3465 | sdata->vif.bss_conf.sync_device_ts = | |
3466 | rx_status->device_timestamp; | |
3467 | if (elems.tim) | |
3468 | sdata->vif.bss_conf.sync_dtim_count = | |
3469 | elems.tim->dtim_count; | |
3470 | else | |
3471 | sdata->vif.bss_conf.sync_dtim_count = 0; | |
3472 | } | |
3473 | ||
d8ec4433 | 3474 | if (ncrc == ifmgd->beacon_crc && ifmgd->beacon_crc_valid) |
8d61ffa5 | 3475 | return; |
30196673 | 3476 | ifmgd->beacon_crc = ncrc; |
d8ec4433 | 3477 | ifmgd->beacon_crc_valid = true; |
30196673 | 3478 | |
d45c4172 | 3479 | ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems); |
7d25745d | 3480 | |
d70b7616 | 3481 | ieee80211_sta_process_chanswitch(sdata, rx_status->mactime, |
2ba45384 | 3482 | rx_status->device_timestamp, |
d70b7616 JB |
3483 | &elems, true); |
3484 | ||
095d81ce JB |
3485 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_WMM) && |
3486 | ieee80211_sta_wmm_params(local, sdata, elems.wmm_param, | |
7d25745d JB |
3487 | elems.wmm_param_len)) |
3488 | changed |= BSS_CHANGED_QOS; | |
3489 | ||
c65dd147 EG |
3490 | /* |
3491 | * If we haven't had a beacon before, tell the driver about the | |
ef429dad | 3492 | * DTIM period (and beacon timing if desired) now. |
c65dd147 | 3493 | */ |
989c6505 | 3494 | if (!ifmgd->have_beacon) { |
c65dd147 EG |
3495 | /* a few bogus AP send dtim_period = 0 or no TIM IE */ |
3496 | if (elems.tim) | |
3497 | bss_conf->dtim_period = elems.tim->dtim_period ?: 1; | |
3498 | else | |
3499 | bss_conf->dtim_period = 1; | |
ef429dad | 3500 | |
989c6505 AB |
3501 | changed |= BSS_CHANGED_BEACON_INFO; |
3502 | ifmgd->have_beacon = true; | |
482a9c74 AB |
3503 | |
3504 | mutex_lock(&local->iflist_mtx); | |
3505 | ieee80211_recalc_ps(local, -1); | |
3506 | mutex_unlock(&local->iflist_mtx); | |
3507 | ||
ce857888 | 3508 | ieee80211_recalc_ps_vif(sdata); |
c65dd147 EG |
3509 | } |
3510 | ||
1946bed9 | 3511 | if (elems.erp_info) { |
7a5158ef JB |
3512 | erp_valid = true; |
3513 | erp_value = elems.erp_info[0]; | |
3514 | } else { | |
3515 | erp_valid = false; | |
50c4afb9 | 3516 | } |
7a5158ef JB |
3517 | changed |= ieee80211_handle_bss_capability(sdata, |
3518 | le16_to_cpu(mgmt->u.beacon.capab_info), | |
3519 | erp_valid, erp_value); | |
f0706e82 | 3520 | |
1128958d | 3521 | mutex_lock(&local->sta_mtx); |
bee7f586 JB |
3522 | sta = sta_info_get(sdata, bssid); |
3523 | ||
53b954ee EP |
3524 | if (ieee80211_config_bw(sdata, sta, |
3525 | elems.ht_cap_elem, elems.ht_operation, | |
30eb1dc2 JB |
3526 | elems.vht_operation, bssid, &changed)) { |
3527 | mutex_unlock(&local->sta_mtx); | |
3528 | ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, | |
3529 | WLAN_REASON_DEAUTH_LEAVING, | |
3530 | true, deauth_buf); | |
a90faa9d EG |
3531 | ieee80211_report_disconnect(sdata, deauth_buf, |
3532 | sizeof(deauth_buf), true, | |
3533 | WLAN_REASON_DEAUTH_LEAVING); | |
8d61ffa5 | 3534 | return; |
30eb1dc2 | 3535 | } |
bee7f586 JB |
3536 | |
3537 | if (sta && elems.opmode_notif) | |
3538 | ieee80211_vht_handle_opmode(sdata, sta, *elems.opmode_notif, | |
3539 | rx_status->band, true); | |
1128958d | 3540 | mutex_unlock(&local->sta_mtx); |
d3c990fb | 3541 | |
24a4e400 SG |
3542 | changed |= ieee80211_handle_pwr_constr(sdata, chan, mgmt, |
3543 | elems.country_elem, | |
3544 | elems.country_elem_len, | |
c8d65917 SG |
3545 | elems.pwr_constr_elem, |
3546 | elems.cisco_dtpc_elem); | |
3f2355cb | 3547 | |
471b3efd | 3548 | ieee80211_bss_info_change_notify(sdata, changed); |
f0706e82 JB |
3549 | } |
3550 | ||
1fa57d01 JB |
3551 | void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, |
3552 | struct sk_buff *skb) | |
f0706e82 JB |
3553 | { |
3554 | struct ieee80211_rx_status *rx_status; | |
f0706e82 JB |
3555 | struct ieee80211_mgmt *mgmt; |
3556 | u16 fc; | |
1b3a2e49 JB |
3557 | struct ieee802_11_elems elems; |
3558 | int ies_len; | |
f0706e82 | 3559 | |
f0706e82 JB |
3560 | rx_status = (struct ieee80211_rx_status *) skb->cb; |
3561 | mgmt = (struct ieee80211_mgmt *) skb->data; | |
3562 | fc = le16_to_cpu(mgmt->frame_control); | |
3563 | ||
8d61ffa5 | 3564 | sdata_lock(sdata); |
77fdaa12 | 3565 | |
66e67e41 JB |
3566 | switch (fc & IEEE80211_FCTL_STYPE) { |
3567 | case IEEE80211_STYPE_BEACON: | |
8d61ffa5 | 3568 | ieee80211_rx_mgmt_beacon(sdata, mgmt, skb->len, rx_status); |
66e67e41 JB |
3569 | break; |
3570 | case IEEE80211_STYPE_PROBE_RESP: | |
3571 | ieee80211_rx_mgmt_probe_resp(sdata, skb); | |
3572 | break; | |
3573 | case IEEE80211_STYPE_AUTH: | |
8d61ffa5 | 3574 | ieee80211_rx_mgmt_auth(sdata, mgmt, skb->len); |
66e67e41 JB |
3575 | break; |
3576 | case IEEE80211_STYPE_DEAUTH: | |
8d61ffa5 | 3577 | ieee80211_rx_mgmt_deauth(sdata, mgmt, skb->len); |
66e67e41 JB |
3578 | break; |
3579 | case IEEE80211_STYPE_DISASSOC: | |
8d61ffa5 | 3580 | ieee80211_rx_mgmt_disassoc(sdata, mgmt, skb->len); |
66e67e41 JB |
3581 | break; |
3582 | case IEEE80211_STYPE_ASSOC_RESP: | |
3583 | case IEEE80211_STYPE_REASSOC_RESP: | |
8d61ffa5 | 3584 | ieee80211_rx_mgmt_assoc_resp(sdata, mgmt, skb->len); |
66e67e41 JB |
3585 | break; |
3586 | case IEEE80211_STYPE_ACTION: | |
37799e52 | 3587 | if (mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT) { |
1b3a2e49 JB |
3588 | ies_len = skb->len - |
3589 | offsetof(struct ieee80211_mgmt, | |
3590 | u.action.u.chan_switch.variable); | |
37799e52 JB |
3591 | |
3592 | if (ies_len < 0) | |
3593 | break; | |
3594 | ||
3595 | ieee802_11_parse_elems( | |
3596 | mgmt->u.action.u.chan_switch.variable, | |
b2e506bf | 3597 | ies_len, true, &elems); |
37799e52 JB |
3598 | |
3599 | if (elems.parse_error) | |
3600 | break; | |
3601 | ||
1b3a2e49 | 3602 | ieee80211_sta_process_chanswitch(sdata, |
2ba45384 LC |
3603 | rx_status->mactime, |
3604 | rx_status->device_timestamp, | |
3605 | &elems, false); | |
1b3a2e49 JB |
3606 | } else if (mgmt->u.action.category == WLAN_CATEGORY_PUBLIC) { |
3607 | ies_len = skb->len - | |
3608 | offsetof(struct ieee80211_mgmt, | |
3609 | u.action.u.ext_chan_switch.variable); | |
3610 | ||
3611 | if (ies_len < 0) | |
3612 | break; | |
3613 | ||
3614 | ieee802_11_parse_elems( | |
3615 | mgmt->u.action.u.ext_chan_switch.variable, | |
b2e506bf | 3616 | ies_len, true, &elems); |
1b3a2e49 JB |
3617 | |
3618 | if (elems.parse_error) | |
3619 | break; | |
3620 | ||
3621 | /* for the handling code pretend this was also an IE */ | |
3622 | elems.ext_chansw_ie = | |
3623 | &mgmt->u.action.u.ext_chan_switch.data; | |
3624 | ||
66e67e41 | 3625 | ieee80211_sta_process_chanswitch(sdata, |
2ba45384 LC |
3626 | rx_status->mactime, |
3627 | rx_status->device_timestamp, | |
3628 | &elems, false); | |
77fdaa12 | 3629 | } |
37799e52 | 3630 | break; |
77fdaa12 | 3631 | } |
8d61ffa5 | 3632 | sdata_unlock(sdata); |
f0706e82 JB |
3633 | } |
3634 | ||
9c6bd790 | 3635 | static void ieee80211_sta_timer(unsigned long data) |
f0706e82 | 3636 | { |
60f8b39c JB |
3637 | struct ieee80211_sub_if_data *sdata = |
3638 | (struct ieee80211_sub_if_data *) data; | |
5bb644a0 | 3639 | |
9b7d72c1 | 3640 | ieee80211_queue_work(&sdata->local->hw, &sdata->work); |
f0706e82 JB |
3641 | } |
3642 | ||
04ac3c0e | 3643 | static void ieee80211_sta_connection_lost(struct ieee80211_sub_if_data *sdata, |
6b684db1 | 3644 | u8 *bssid, u8 reason, bool tx) |
04ac3c0e | 3645 | { |
6ae16775 | 3646 | u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN]; |
04ac3c0e | 3647 | |
37ad3888 | 3648 | ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, reason, |
6b684db1 | 3649 | tx, frame_buf); |
37ad3888 | 3650 | |
a90faa9d EG |
3651 | ieee80211_report_disconnect(sdata, frame_buf, sizeof(frame_buf), true, |
3652 | reason); | |
04ac3c0e FF |
3653 | } |
3654 | ||
66e67e41 JB |
3655 | static int ieee80211_probe_auth(struct ieee80211_sub_if_data *sdata) |
3656 | { | |
3657 | struct ieee80211_local *local = sdata->local; | |
3658 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
3659 | struct ieee80211_mgd_auth_data *auth_data = ifmgd->auth_data; | |
1672c0e3 | 3660 | u32 tx_flags = 0; |
66e67e41 | 3661 | |
8d61ffa5 | 3662 | sdata_assert_lock(sdata); |
66e67e41 JB |
3663 | |
3664 | if (WARN_ON_ONCE(!auth_data)) | |
3665 | return -EINVAL; | |
3666 | ||
66e67e41 JB |
3667 | auth_data->tries++; |
3668 | ||
3669 | if (auth_data->tries > IEEE80211_AUTH_MAX_TRIES) { | |
bdcbd8e0 JB |
3670 | sdata_info(sdata, "authentication with %pM timed out\n", |
3671 | auth_data->bss->bssid); | |
66e67e41 JB |
3672 | |
3673 | /* | |
3674 | * Most likely AP is not in the range so remove the | |
3675 | * bss struct for that AP. | |
3676 | */ | |
3677 | cfg80211_unlink_bss(local->hw.wiphy, auth_data->bss); | |
3678 | ||
3679 | return -ETIMEDOUT; | |
3680 | } | |
3681 | ||
a1845fc7 JB |
3682 | drv_mgd_prepare_tx(local, sdata); |
3683 | ||
66e67e41 | 3684 | if (auth_data->bss->proberesp_ies) { |
6b8ece3a JM |
3685 | u16 trans = 1; |
3686 | u16 status = 0; | |
3687 | ||
bdcbd8e0 JB |
3688 | sdata_info(sdata, "send auth to %pM (try %d/%d)\n", |
3689 | auth_data->bss->bssid, auth_data->tries, | |
3690 | IEEE80211_AUTH_MAX_TRIES); | |
66e67e41 JB |
3691 | |
3692 | auth_data->expected_transaction = 2; | |
6b8ece3a JM |
3693 | |
3694 | if (auth_data->algorithm == WLAN_AUTH_SAE) { | |
3695 | trans = auth_data->sae_trans; | |
3696 | status = auth_data->sae_status; | |
3697 | auth_data->expected_transaction = trans; | |
3698 | } | |
3699 | ||
6211dd12 SG |
3700 | if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) |
3701 | tx_flags = IEEE80211_TX_CTL_REQ_TX_STATUS | | |
3702 | IEEE80211_TX_INTFL_MLME_CONN_TX; | |
3703 | ||
6b8ece3a JM |
3704 | ieee80211_send_auth(sdata, trans, auth_data->algorithm, status, |
3705 | auth_data->data, auth_data->data_len, | |
66e67e41 | 3706 | auth_data->bss->bssid, |
1672c0e3 JB |
3707 | auth_data->bss->bssid, NULL, 0, 0, |
3708 | tx_flags); | |
66e67e41 JB |
3709 | } else { |
3710 | const u8 *ssidie; | |
3711 | ||
bdcbd8e0 JB |
3712 | sdata_info(sdata, "direct probe to %pM (try %d/%i)\n", |
3713 | auth_data->bss->bssid, auth_data->tries, | |
3714 | IEEE80211_AUTH_MAX_TRIES); | |
66e67e41 | 3715 | |
9caf0364 | 3716 | rcu_read_lock(); |
66e67e41 | 3717 | ssidie = ieee80211_bss_get_ie(auth_data->bss, WLAN_EID_SSID); |
9caf0364 JB |
3718 | if (!ssidie) { |
3719 | rcu_read_unlock(); | |
66e67e41 | 3720 | return -EINVAL; |
9caf0364 | 3721 | } |
66e67e41 JB |
3722 | /* |
3723 | * Direct probe is sent to broadcast address as some APs | |
3724 | * will not answer to direct packet in unassociated state. | |
3725 | */ | |
a344d677 JB |
3726 | ieee80211_send_probe_req(sdata, sdata->vif.addr, NULL, |
3727 | ssidie + 2, ssidie[1], | |
6211dd12 | 3728 | NULL, 0, (u32) -1, true, 0, |
55de908a | 3729 | auth_data->bss->channel, false); |
9caf0364 | 3730 | rcu_read_unlock(); |
66e67e41 JB |
3731 | } |
3732 | ||
6211dd12 | 3733 | if (tx_flags == 0) { |
1672c0e3 | 3734 | auth_data->timeout = jiffies + IEEE80211_AUTH_TIMEOUT; |
cb236d2d | 3735 | auth_data->timeout_started = true; |
8d61ffa5 | 3736 | run_again(sdata, auth_data->timeout); |
89afe614 | 3737 | } else { |
cb236d2d JB |
3738 | auth_data->timeout = |
3739 | round_jiffies_up(jiffies + IEEE80211_AUTH_TIMEOUT_LONG); | |
3740 | auth_data->timeout_started = true; | |
3741 | run_again(sdata, auth_data->timeout); | |
1672c0e3 | 3742 | } |
66e67e41 JB |
3743 | |
3744 | return 0; | |
3745 | } | |
3746 | ||
3747 | static int ieee80211_do_assoc(struct ieee80211_sub_if_data *sdata) | |
3748 | { | |
3749 | struct ieee80211_mgd_assoc_data *assoc_data = sdata->u.mgd.assoc_data; | |
3750 | struct ieee80211_local *local = sdata->local; | |
3751 | ||
8d61ffa5 | 3752 | sdata_assert_lock(sdata); |
66e67e41 | 3753 | |
66e67e41 JB |
3754 | assoc_data->tries++; |
3755 | if (assoc_data->tries > IEEE80211_ASSOC_MAX_TRIES) { | |
bdcbd8e0 JB |
3756 | sdata_info(sdata, "association with %pM timed out\n", |
3757 | assoc_data->bss->bssid); | |
66e67e41 JB |
3758 | |
3759 | /* | |
3760 | * Most likely AP is not in the range so remove the | |
3761 | * bss struct for that AP. | |
3762 | */ | |
3763 | cfg80211_unlink_bss(local->hw.wiphy, assoc_data->bss); | |
3764 | ||
3765 | return -ETIMEDOUT; | |
3766 | } | |
3767 | ||
bdcbd8e0 JB |
3768 | sdata_info(sdata, "associate with %pM (try %d/%d)\n", |
3769 | assoc_data->bss->bssid, assoc_data->tries, | |
3770 | IEEE80211_ASSOC_MAX_TRIES); | |
66e67e41 JB |
3771 | ieee80211_send_assoc(sdata); |
3772 | ||
1672c0e3 JB |
3773 | if (!(local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)) { |
3774 | assoc_data->timeout = jiffies + IEEE80211_ASSOC_TIMEOUT; | |
89afe614 | 3775 | assoc_data->timeout_started = true; |
8d61ffa5 | 3776 | run_again(sdata, assoc_data->timeout); |
89afe614 | 3777 | } else { |
cb236d2d JB |
3778 | assoc_data->timeout = |
3779 | round_jiffies_up(jiffies + | |
3780 | IEEE80211_ASSOC_TIMEOUT_LONG); | |
3781 | assoc_data->timeout_started = true; | |
3782 | run_again(sdata, assoc_data->timeout); | |
1672c0e3 | 3783 | } |
66e67e41 JB |
3784 | |
3785 | return 0; | |
3786 | } | |
3787 | ||
1672c0e3 JB |
3788 | void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata, |
3789 | __le16 fc, bool acked) | |
3790 | { | |
3791 | struct ieee80211_local *local = sdata->local; | |
3792 | ||
3793 | sdata->u.mgd.status_fc = fc; | |
3794 | sdata->u.mgd.status_acked = acked; | |
3795 | sdata->u.mgd.status_received = true; | |
3796 | ||
3797 | ieee80211_queue_work(&local->hw, &sdata->work); | |
3798 | } | |
3799 | ||
1fa57d01 | 3800 | void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata) |
9c6bd790 | 3801 | { |
9c6bd790 | 3802 | struct ieee80211_local *local = sdata->local; |
1fa57d01 | 3803 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
9c6bd790 | 3804 | |
8d61ffa5 | 3805 | sdata_lock(sdata); |
77fdaa12 | 3806 | |
1672c0e3 JB |
3807 | if (ifmgd->status_received) { |
3808 | __le16 fc = ifmgd->status_fc; | |
3809 | bool status_acked = ifmgd->status_acked; | |
3810 | ||
3811 | ifmgd->status_received = false; | |
3812 | if (ifmgd->auth_data && | |
3813 | (ieee80211_is_probe_req(fc) || ieee80211_is_auth(fc))) { | |
3814 | if (status_acked) { | |
3815 | ifmgd->auth_data->timeout = | |
3816 | jiffies + IEEE80211_AUTH_TIMEOUT_SHORT; | |
8d61ffa5 | 3817 | run_again(sdata, ifmgd->auth_data->timeout); |
1672c0e3 JB |
3818 | } else { |
3819 | ifmgd->auth_data->timeout = jiffies - 1; | |
3820 | } | |
89afe614 | 3821 | ifmgd->auth_data->timeout_started = true; |
1672c0e3 JB |
3822 | } else if (ifmgd->assoc_data && |
3823 | (ieee80211_is_assoc_req(fc) || | |
3824 | ieee80211_is_reassoc_req(fc))) { | |
3825 | if (status_acked) { | |
3826 | ifmgd->assoc_data->timeout = | |
3827 | jiffies + IEEE80211_ASSOC_TIMEOUT_SHORT; | |
8d61ffa5 | 3828 | run_again(sdata, ifmgd->assoc_data->timeout); |
1672c0e3 JB |
3829 | } else { |
3830 | ifmgd->assoc_data->timeout = jiffies - 1; | |
3831 | } | |
89afe614 | 3832 | ifmgd->assoc_data->timeout_started = true; |
1672c0e3 JB |
3833 | } |
3834 | } | |
3835 | ||
89afe614 | 3836 | if (ifmgd->auth_data && ifmgd->auth_data->timeout_started && |
66e67e41 JB |
3837 | time_after(jiffies, ifmgd->auth_data->timeout)) { |
3838 | if (ifmgd->auth_data->done) { | |
3839 | /* | |
3840 | * ok ... we waited for assoc but userspace didn't, | |
3841 | * so let's just kill the auth data | |
3842 | */ | |
3843 | ieee80211_destroy_auth_data(sdata, false); | |
3844 | } else if (ieee80211_probe_auth(sdata)) { | |
3845 | u8 bssid[ETH_ALEN]; | |
a9409093 EG |
3846 | struct ieee80211_event event = { |
3847 | .type = MLME_EVENT, | |
3848 | .u.mlme.data = AUTH_EVENT, | |
3849 | .u.mlme.status = MLME_TIMEOUT, | |
3850 | }; | |
66e67e41 JB |
3851 | |
3852 | memcpy(bssid, ifmgd->auth_data->bss->bssid, ETH_ALEN); | |
3853 | ||
3854 | ieee80211_destroy_auth_data(sdata, false); | |
3855 | ||
6ff57cf8 | 3856 | cfg80211_auth_timeout(sdata->dev, bssid); |
a9409093 | 3857 | drv_event_callback(sdata->local, sdata, &event); |
66e67e41 | 3858 | } |
89afe614 | 3859 | } else if (ifmgd->auth_data && ifmgd->auth_data->timeout_started) |
8d61ffa5 | 3860 | run_again(sdata, ifmgd->auth_data->timeout); |
66e67e41 | 3861 | |
89afe614 | 3862 | if (ifmgd->assoc_data && ifmgd->assoc_data->timeout_started && |
66e67e41 | 3863 | time_after(jiffies, ifmgd->assoc_data->timeout)) { |
989c6505 | 3864 | if ((ifmgd->assoc_data->need_beacon && !ifmgd->have_beacon) || |
66e67e41 | 3865 | ieee80211_do_assoc(sdata)) { |
959867fa | 3866 | struct cfg80211_bss *bss = ifmgd->assoc_data->bss; |
d0d1a12f EG |
3867 | struct ieee80211_event event = { |
3868 | .type = MLME_EVENT, | |
3869 | .u.mlme.data = ASSOC_EVENT, | |
3870 | .u.mlme.status = MLME_TIMEOUT, | |
3871 | }; | |
66e67e41 JB |
3872 | |
3873 | ieee80211_destroy_assoc_data(sdata, false); | |
959867fa | 3874 | cfg80211_assoc_timeout(sdata->dev, bss); |
d0d1a12f | 3875 | drv_event_callback(sdata->local, sdata, &event); |
66e67e41 | 3876 | } |
89afe614 | 3877 | } else if (ifmgd->assoc_data && ifmgd->assoc_data->timeout_started) |
8d61ffa5 | 3878 | run_again(sdata, ifmgd->assoc_data->timeout); |
66e67e41 | 3879 | |
392b9ffb | 3880 | if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL && |
b291ba11 | 3881 | ifmgd->associated) { |
a43abf29 | 3882 | u8 bssid[ETH_ALEN]; |
72a8a3ed | 3883 | int max_tries; |
a43abf29 | 3884 | |
0c1ad2ca | 3885 | memcpy(bssid, ifmgd->associated->bssid, ETH_ALEN); |
4e5ff376 | 3886 | |
72a8a3ed | 3887 | if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) |
180205bd | 3888 | max_tries = max_nullfunc_tries; |
72a8a3ed | 3889 | else |
180205bd | 3890 | max_tries = max_probe_tries; |
72a8a3ed | 3891 | |
4e5ff376 FF |
3892 | /* ACK received for nullfunc probing frame */ |
3893 | if (!ifmgd->probe_send_count) | |
3894 | ieee80211_reset_ap_probe(sdata); | |
04ac3c0e FF |
3895 | else if (ifmgd->nullfunc_failed) { |
3896 | if (ifmgd->probe_send_count < max_tries) { | |
bdcbd8e0 JB |
3897 | mlme_dbg(sdata, |
3898 | "No ack for nullfunc frame to AP %pM, try %d/%i\n", | |
3899 | bssid, ifmgd->probe_send_count, | |
3900 | max_tries); | |
04ac3c0e FF |
3901 | ieee80211_mgd_probe_ap_send(sdata); |
3902 | } else { | |
bdcbd8e0 JB |
3903 | mlme_dbg(sdata, |
3904 | "No ack for nullfunc frame to AP %pM, disconnecting.\n", | |
3905 | bssid); | |
95acac61 | 3906 | ieee80211_sta_connection_lost(sdata, bssid, |
6b684db1 JB |
3907 | WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, |
3908 | false); | |
04ac3c0e FF |
3909 | } |
3910 | } else if (time_is_after_jiffies(ifmgd->probe_timeout)) | |
8d61ffa5 | 3911 | run_again(sdata, ifmgd->probe_timeout); |
04ac3c0e | 3912 | else if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) { |
bdcbd8e0 JB |
3913 | mlme_dbg(sdata, |
3914 | "Failed to send nullfunc to AP %pM after %dms, disconnecting\n", | |
3915 | bssid, probe_wait_ms); | |
95acac61 | 3916 | ieee80211_sta_connection_lost(sdata, bssid, |
6b684db1 | 3917 | WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, false); |
04ac3c0e | 3918 | } else if (ifmgd->probe_send_count < max_tries) { |
bdcbd8e0 JB |
3919 | mlme_dbg(sdata, |
3920 | "No probe response from AP %pM after %dms, try %d/%i\n", | |
3921 | bssid, probe_wait_ms, | |
3922 | ifmgd->probe_send_count, max_tries); | |
a43abf29 ML |
3923 | ieee80211_mgd_probe_ap_send(sdata); |
3924 | } else { | |
b291ba11 JB |
3925 | /* |
3926 | * We actually lost the connection ... or did we? | |
3927 | * Let's make sure! | |
3928 | */ | |
b38afa87 BG |
3929 | wiphy_debug(local->hw.wiphy, |
3930 | "%s: No probe response from AP %pM" | |
3931 | " after %dms, disconnecting.\n", | |
3932 | sdata->name, | |
180205bd | 3933 | bssid, probe_wait_ms); |
04ac3c0e | 3934 | |
95acac61 | 3935 | ieee80211_sta_connection_lost(sdata, bssid, |
6b684db1 | 3936 | WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, false); |
b291ba11 JB |
3937 | } |
3938 | } | |
3939 | ||
8d61ffa5 | 3940 | sdata_unlock(sdata); |
f0706e82 JB |
3941 | } |
3942 | ||
b291ba11 JB |
3943 | static void ieee80211_sta_bcn_mon_timer(unsigned long data) |
3944 | { | |
3945 | struct ieee80211_sub_if_data *sdata = | |
3946 | (struct ieee80211_sub_if_data *) data; | |
0c21e632 | 3947 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
b291ba11 | 3948 | |
0c21e632 | 3949 | if (sdata->vif.csa_active && !ifmgd->csa_waiting_bcn) |
e5593f56 MK |
3950 | return; |
3951 | ||
682bd38b | 3952 | sdata->u.mgd.connection_loss = false; |
1e4dcd01 JO |
3953 | ieee80211_queue_work(&sdata->local->hw, |
3954 | &sdata->u.mgd.beacon_connection_loss_work); | |
b291ba11 JB |
3955 | } |
3956 | ||
3957 | static void ieee80211_sta_conn_mon_timer(unsigned long data) | |
3958 | { | |
3959 | struct ieee80211_sub_if_data *sdata = | |
3960 | (struct ieee80211_sub_if_data *) data; | |
3961 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
3962 | struct ieee80211_local *local = sdata->local; | |
3963 | ||
0c21e632 | 3964 | if (sdata->vif.csa_active && !ifmgd->csa_waiting_bcn) |
e5593f56 MK |
3965 | return; |
3966 | ||
42935eca | 3967 | ieee80211_queue_work(&local->hw, &ifmgd->monitor_work); |
b291ba11 JB |
3968 | } |
3969 | ||
3970 | static void ieee80211_sta_monitor_work(struct work_struct *work) | |
3971 | { | |
3972 | struct ieee80211_sub_if_data *sdata = | |
3973 | container_of(work, struct ieee80211_sub_if_data, | |
3974 | u.mgd.monitor_work); | |
3975 | ||
3976 | ieee80211_mgd_probe_ap(sdata, false); | |
3977 | } | |
3978 | ||
9c6bd790 JB |
3979 | static void ieee80211_restart_sta_timer(struct ieee80211_sub_if_data *sdata) |
3980 | { | |
494f1fe5 EP |
3981 | u32 flags; |
3982 | ||
ad935687 | 3983 | if (sdata->vif.type == NL80211_IFTYPE_STATION) { |
925e64c3 | 3984 | __ieee80211_stop_poll(sdata); |
ad935687 | 3985 | |
b291ba11 | 3986 | /* let's probe the connection once */ |
494f1fe5 EP |
3987 | flags = sdata->local->hw.flags; |
3988 | if (!(flags & IEEE80211_HW_CONNECTION_MONITOR)) | |
3989 | ieee80211_queue_work(&sdata->local->hw, | |
3990 | &sdata->u.mgd.monitor_work); | |
b291ba11 | 3991 | /* and do all the other regular work too */ |
64592c8f | 3992 | ieee80211_queue_work(&sdata->local->hw, &sdata->work); |
ad935687 | 3993 | } |
9c6bd790 | 3994 | } |
f0706e82 | 3995 | |
b8360ab8 | 3996 | #ifdef CONFIG_PM |
1a1cb744 JB |
3997 | void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata) |
3998 | { | |
3999 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
4000 | u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN]; | |
4001 | ||
4002 | sdata_lock(sdata); | |
4003 | ||
c52666ae EG |
4004 | if (ifmgd->auth_data || ifmgd->assoc_data) { |
4005 | const u8 *bssid = ifmgd->auth_data ? | |
4006 | ifmgd->auth_data->bss->bssid : | |
4007 | ifmgd->assoc_data->bss->bssid; | |
4008 | ||
1a1cb744 | 4009 | /* |
c52666ae EG |
4010 | * If we are trying to authenticate / associate while suspending, |
4011 | * cfg80211 won't know and won't actually abort those attempts, | |
4012 | * thus we need to do that ourselves. | |
1a1cb744 | 4013 | */ |
c52666ae | 4014 | ieee80211_send_deauth_disassoc(sdata, bssid, |
1a1cb744 JB |
4015 | IEEE80211_STYPE_DEAUTH, |
4016 | WLAN_REASON_DEAUTH_LEAVING, | |
4017 | false, frame_buf); | |
c52666ae EG |
4018 | if (ifmgd->assoc_data) |
4019 | ieee80211_destroy_assoc_data(sdata, false); | |
4020 | if (ifmgd->auth_data) | |
4021 | ieee80211_destroy_auth_data(sdata, false); | |
1a1cb744 JB |
4022 | cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf, |
4023 | IEEE80211_DEAUTH_FRAME_LEN); | |
4024 | } | |
4025 | ||
be72afe0 JB |
4026 | /* This is a bit of a hack - we should find a better and more generic |
4027 | * solution to this. Normally when suspending, cfg80211 will in fact | |
4028 | * deauthenticate. However, it doesn't (and cannot) stop an ongoing | |
4029 | * auth (not so important) or assoc (this is the problem) process. | |
4030 | * | |
4031 | * As a consequence, it can happen that we are in the process of both | |
4032 | * associating and suspending, and receive an association response | |
4033 | * after cfg80211 has checked if it needs to disconnect, but before | |
4034 | * we actually set the flag to drop incoming frames. This will then | |
4035 | * cause the workqueue flush to process the association response in | |
4036 | * the suspend, resulting in a successful association just before it | |
4037 | * tries to remove the interface from the driver, which now though | |
4038 | * has a channel context assigned ... this results in issues. | |
4039 | * | |
4040 | * To work around this (for now) simply deauth here again if we're | |
4041 | * now connected. | |
4042 | */ | |
4043 | if (ifmgd->associated && !sdata->local->wowlan) { | |
4044 | u8 bssid[ETH_ALEN]; | |
4045 | struct cfg80211_deauth_request req = { | |
4046 | .reason_code = WLAN_REASON_DEAUTH_LEAVING, | |
4047 | .bssid = bssid, | |
4048 | }; | |
4049 | ||
4050 | memcpy(bssid, ifmgd->associated->bssid, ETH_ALEN); | |
4051 | ieee80211_mgd_deauth(sdata, &req); | |
4052 | } | |
4053 | ||
1a1cb744 JB |
4054 | sdata_unlock(sdata); |
4055 | } | |
4056 | ||
b8360ab8 JB |
4057 | void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata) |
4058 | { | |
4059 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
4060 | ||
8d61ffa5 | 4061 | sdata_lock(sdata); |
b8360ab8 | 4062 | if (!ifmgd->associated) { |
8d61ffa5 | 4063 | sdata_unlock(sdata); |
b8360ab8 JB |
4064 | return; |
4065 | } | |
4066 | ||
4067 | if (sdata->flags & IEEE80211_SDATA_DISCONNECT_RESUME) { | |
4068 | sdata->flags &= ~IEEE80211_SDATA_DISCONNECT_RESUME; | |
4069 | mlme_dbg(sdata, "driver requested disconnect after resume\n"); | |
4070 | ieee80211_sta_connection_lost(sdata, | |
4071 | ifmgd->associated->bssid, | |
4072 | WLAN_REASON_UNSPECIFIED, | |
4073 | true); | |
8d61ffa5 | 4074 | sdata_unlock(sdata); |
b8360ab8 JB |
4075 | return; |
4076 | } | |
8d61ffa5 | 4077 | sdata_unlock(sdata); |
b8360ab8 JB |
4078 | } |
4079 | #endif | |
4080 | ||
9c6bd790 JB |
4081 | /* interface setup */ |
4082 | void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata) | |
f0706e82 | 4083 | { |
46900298 | 4084 | struct ieee80211_if_managed *ifmgd; |
988c0f72 | 4085 | |
46900298 | 4086 | ifmgd = &sdata->u.mgd; |
b291ba11 | 4087 | INIT_WORK(&ifmgd->monitor_work, ieee80211_sta_monitor_work); |
46900298 | 4088 | INIT_WORK(&ifmgd->chswitch_work, ieee80211_chswitch_work); |
1e4dcd01 JO |
4089 | INIT_WORK(&ifmgd->beacon_connection_loss_work, |
4090 | ieee80211_beacon_connection_loss_work); | |
882a7c69 JB |
4091 | INIT_WORK(&ifmgd->csa_connection_drop_work, |
4092 | ieee80211_csa_connection_drop_work); | |
687da132 | 4093 | INIT_WORK(&ifmgd->request_smps_work, ieee80211_request_smps_mgd_work); |
81dd2b88 AN |
4094 | INIT_DELAYED_WORK(&ifmgd->tdls_peer_del_work, |
4095 | ieee80211_tdls_peer_del_work); | |
46900298 | 4096 | setup_timer(&ifmgd->timer, ieee80211_sta_timer, |
c481ec97 | 4097 | (unsigned long) sdata); |
b291ba11 JB |
4098 | setup_timer(&ifmgd->bcn_mon_timer, ieee80211_sta_bcn_mon_timer, |
4099 | (unsigned long) sdata); | |
4100 | setup_timer(&ifmgd->conn_mon_timer, ieee80211_sta_conn_mon_timer, | |
4101 | (unsigned long) sdata); | |
46900298 | 4102 | setup_timer(&ifmgd->chswitch_timer, ieee80211_chswitch_timer, |
9c6bd790 | 4103 | (unsigned long) sdata); |
02219b3a JB |
4104 | INIT_DELAYED_WORK(&ifmgd->tx_tspec_wk, |
4105 | ieee80211_sta_handle_tspec_ac_params_wk); | |
9c6bd790 | 4106 | |
ab1faead | 4107 | ifmgd->flags = 0; |
1478acb3 | 4108 | ifmgd->powersave = sdata->wdev.ps; |
219c3867 AB |
4109 | ifmgd->uapsd_queues = sdata->local->hw.uapsd_queues; |
4110 | ifmgd->uapsd_max_sp_len = sdata->local->hw.uapsd_max_sp_len; | |
67baf663 | 4111 | ifmgd->p2p_noa_index = -1; |
bbbdff9e | 4112 | |
0d8614b4 | 4113 | if (sdata->local->hw.wiphy->features & NL80211_FEATURE_DYNAMIC_SMPS) |
0f78231b JB |
4114 | ifmgd->req_smps = IEEE80211_SMPS_AUTOMATIC; |
4115 | else | |
4116 | ifmgd->req_smps = IEEE80211_SMPS_OFF; | |
1277b4a9 LK |
4117 | |
4118 | /* Setup TDLS data */ | |
4119 | spin_lock_init(&ifmgd->teardown_lock); | |
4120 | ifmgd->teardown_skb = NULL; | |
4121 | ifmgd->orig_teardown_skb = NULL; | |
f0706e82 JB |
4122 | } |
4123 | ||
77fdaa12 JB |
4124 | /* scan finished notification */ |
4125 | void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local) | |
60f8b39c | 4126 | { |
31ee67a1 | 4127 | struct ieee80211_sub_if_data *sdata; |
60f8b39c | 4128 | |
77fdaa12 JB |
4129 | /* Restart STA timers */ |
4130 | rcu_read_lock(); | |
370bd005 BG |
4131 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { |
4132 | if (ieee80211_sdata_running(sdata)) | |
4133 | ieee80211_restart_sta_timer(sdata); | |
4134 | } | |
77fdaa12 JB |
4135 | rcu_read_unlock(); |
4136 | } | |
60f8b39c | 4137 | |
77fdaa12 JB |
4138 | int ieee80211_max_network_latency(struct notifier_block *nb, |
4139 | unsigned long data, void *dummy) | |
4140 | { | |
4141 | s32 latency_usec = (s32) data; | |
4142 | struct ieee80211_local *local = | |
4143 | container_of(nb, struct ieee80211_local, | |
4144 | network_latency_notifier); | |
1fa6f4af | 4145 | |
77fdaa12 JB |
4146 | mutex_lock(&local->iflist_mtx); |
4147 | ieee80211_recalc_ps(local, latency_usec); | |
4148 | mutex_unlock(&local->iflist_mtx); | |
dfe67012 | 4149 | |
8bd811aa | 4150 | return NOTIFY_OK; |
9c6bd790 JB |
4151 | } |
4152 | ||
f2d9d270 JB |
4153 | static u8 ieee80211_ht_vht_rx_chains(struct ieee80211_sub_if_data *sdata, |
4154 | struct cfg80211_bss *cbss) | |
4155 | { | |
4156 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
4157 | const u8 *ht_cap_ie, *vht_cap_ie; | |
4158 | const struct ieee80211_ht_cap *ht_cap; | |
4159 | const struct ieee80211_vht_cap *vht_cap; | |
4160 | u8 chains = 1; | |
4161 | ||
4162 | if (ifmgd->flags & IEEE80211_STA_DISABLE_HT) | |
4163 | return chains; | |
4164 | ||
9caf0364 | 4165 | ht_cap_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_HT_CAPABILITY); |
f2d9d270 JB |
4166 | if (ht_cap_ie && ht_cap_ie[1] >= sizeof(*ht_cap)) { |
4167 | ht_cap = (void *)(ht_cap_ie + 2); | |
4168 | chains = ieee80211_mcs_to_chains(&ht_cap->mcs); | |
4169 | /* | |
4170 | * TODO: use "Tx Maximum Number Spatial Streams Supported" and | |
4171 | * "Tx Unequal Modulation Supported" fields. | |
4172 | */ | |
4173 | } | |
4174 | ||
4175 | if (ifmgd->flags & IEEE80211_STA_DISABLE_VHT) | |
4176 | return chains; | |
4177 | ||
9caf0364 | 4178 | vht_cap_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_VHT_CAPABILITY); |
f2d9d270 JB |
4179 | if (vht_cap_ie && vht_cap_ie[1] >= sizeof(*vht_cap)) { |
4180 | u8 nss; | |
4181 | u16 tx_mcs_map; | |
4182 | ||
4183 | vht_cap = (void *)(vht_cap_ie + 2); | |
4184 | tx_mcs_map = le16_to_cpu(vht_cap->supp_mcs.tx_mcs_map); | |
4185 | for (nss = 8; nss > 0; nss--) { | |
4186 | if (((tx_mcs_map >> (2 * (nss - 1))) & 3) != | |
4187 | IEEE80211_VHT_MCS_NOT_SUPPORTED) | |
4188 | break; | |
4189 | } | |
4190 | /* TODO: use "Tx Highest Supported Long GI Data Rate" field? */ | |
4191 | chains = max(chains, nss); | |
4192 | } | |
4193 | ||
4194 | return chains; | |
4195 | } | |
4196 | ||
b17166a7 JB |
4197 | static int ieee80211_prep_channel(struct ieee80211_sub_if_data *sdata, |
4198 | struct cfg80211_bss *cbss) | |
a1cf775d JB |
4199 | { |
4200 | struct ieee80211_local *local = sdata->local; | |
4201 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
53b954ee | 4202 | const struct ieee80211_ht_cap *ht_cap = NULL; |
24398e39 | 4203 | const struct ieee80211_ht_operation *ht_oper = NULL; |
f2d9d270 | 4204 | const struct ieee80211_vht_operation *vht_oper = NULL; |
24398e39 | 4205 | struct ieee80211_supported_band *sband; |
4bf88530 | 4206 | struct cfg80211_chan_def chandef; |
f2d9d270 | 4207 | int ret; |
a1cf775d | 4208 | |
24398e39 JB |
4209 | sband = local->hw.wiphy->bands[cbss->channel->band]; |
4210 | ||
f2d9d270 JB |
4211 | ifmgd->flags &= ~(IEEE80211_STA_DISABLE_40MHZ | |
4212 | IEEE80211_STA_DISABLE_80P80MHZ | | |
4213 | IEEE80211_STA_DISABLE_160MHZ); | |
4214 | ||
9caf0364 JB |
4215 | rcu_read_lock(); |
4216 | ||
f2d9d270 JB |
4217 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT) && |
4218 | sband->ht_cap.ht_supported) { | |
53b954ee | 4219 | const u8 *ht_oper_ie, *ht_cap_ie; |
24398e39 | 4220 | |
9caf0364 | 4221 | ht_oper_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_HT_OPERATION); |
24398e39 JB |
4222 | if (ht_oper_ie && ht_oper_ie[1] >= sizeof(*ht_oper)) |
4223 | ht_oper = (void *)(ht_oper_ie + 2); | |
08e6effa | 4224 | |
53b954ee EP |
4225 | ht_cap_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_HT_CAPABILITY); |
4226 | if (ht_cap_ie && ht_cap_ie[1] >= sizeof(*ht_cap)) | |
4227 | ht_cap = (void *)(ht_cap_ie + 2); | |
4228 | ||
4229 | if (!ht_cap) { | |
08e6effa JB |
4230 | ifmgd->flags |= IEEE80211_STA_DISABLE_HT; |
4231 | ht_oper = NULL; | |
4232 | } | |
24398e39 JB |
4233 | } |
4234 | ||
f2d9d270 JB |
4235 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) && |
4236 | sband->vht_cap.vht_supported) { | |
08e6effa | 4237 | const u8 *vht_oper_ie, *vht_cap; |
f2d9d270 | 4238 | |
9caf0364 JB |
4239 | vht_oper_ie = ieee80211_bss_get_ie(cbss, |
4240 | WLAN_EID_VHT_OPERATION); | |
f2d9d270 JB |
4241 | if (vht_oper_ie && vht_oper_ie[1] >= sizeof(*vht_oper)) |
4242 | vht_oper = (void *)(vht_oper_ie + 2); | |
4243 | if (vht_oper && !ht_oper) { | |
4244 | vht_oper = NULL; | |
bdcbd8e0 | 4245 | sdata_info(sdata, |
f2d9d270 | 4246 | "AP advertised VHT without HT, disabling both\n"); |
cb145022 JB |
4247 | ifmgd->flags |= IEEE80211_STA_DISABLE_HT; |
4248 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; | |
24398e39 | 4249 | } |
08e6effa JB |
4250 | |
4251 | vht_cap = ieee80211_bss_get_ie(cbss, WLAN_EID_VHT_CAPABILITY); | |
4252 | if (!vht_cap || vht_cap[1] < sizeof(struct ieee80211_vht_cap)) { | |
4253 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; | |
4254 | vht_oper = NULL; | |
4255 | } | |
24398e39 JB |
4256 | } |
4257 | ||
f2d9d270 JB |
4258 | ifmgd->flags |= ieee80211_determine_chantype(sdata, sband, |
4259 | cbss->channel, | |
53b954ee | 4260 | ht_cap, ht_oper, vht_oper, |
5cdaed1e | 4261 | &chandef, false); |
04ecd257 | 4262 | |
f2d9d270 JB |
4263 | sdata->needed_rx_chains = min(ieee80211_ht_vht_rx_chains(sdata, cbss), |
4264 | local->rx_chains); | |
24398e39 | 4265 | |
9caf0364 JB |
4266 | rcu_read_unlock(); |
4267 | ||
04ecd257 JB |
4268 | /* will change later if needed */ |
4269 | sdata->smps_mode = IEEE80211_SMPS_OFF; | |
4270 | ||
34a3740d | 4271 | mutex_lock(&local->mtx); |
f2d9d270 JB |
4272 | /* |
4273 | * If this fails (possibly due to channel context sharing | |
4274 | * on incompatible channels, e.g. 80+80 and 160 sharing the | |
4275 | * same control channel) try to use a smaller bandwidth. | |
4276 | */ | |
4277 | ret = ieee80211_vif_use_channel(sdata, &chandef, | |
4278 | IEEE80211_CHANCTX_SHARED); | |
0418a445 SW |
4279 | |
4280 | /* don't downgrade for 5 and 10 MHz channels, though. */ | |
4281 | if (chandef.width == NL80211_CHAN_WIDTH_5 || | |
4282 | chandef.width == NL80211_CHAN_WIDTH_10) | |
34a3740d | 4283 | goto out; |
0418a445 | 4284 | |
d601cd8d | 4285 | while (ret && chandef.width != NL80211_CHAN_WIDTH_20_NOHT) { |
e6b7cde4 | 4286 | ifmgd->flags |= ieee80211_chandef_downgrade(&chandef); |
d601cd8d JB |
4287 | ret = ieee80211_vif_use_channel(sdata, &chandef, |
4288 | IEEE80211_CHANCTX_SHARED); | |
4289 | } | |
34a3740d JB |
4290 | out: |
4291 | mutex_unlock(&local->mtx); | |
f2d9d270 | 4292 | return ret; |
b17166a7 JB |
4293 | } |
4294 | ||
4295 | static int ieee80211_prep_connection(struct ieee80211_sub_if_data *sdata, | |
4296 | struct cfg80211_bss *cbss, bool assoc) | |
4297 | { | |
4298 | struct ieee80211_local *local = sdata->local; | |
4299 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
4300 | struct ieee80211_bss *bss = (void *)cbss->priv; | |
4301 | struct sta_info *new_sta = NULL; | |
179b8fc7 CRI |
4302 | struct ieee80211_supported_band *sband; |
4303 | struct ieee80211_sta_ht_cap sta_ht_cap; | |
4304 | bool have_sta = false, is_override = false; | |
b17166a7 JB |
4305 | int err; |
4306 | ||
179b8fc7 CRI |
4307 | sband = local->hw.wiphy->bands[cbss->channel->band]; |
4308 | ||
b17166a7 JB |
4309 | if (WARN_ON(!ifmgd->auth_data && !ifmgd->assoc_data)) |
4310 | return -EINVAL; | |
4311 | ||
4312 | if (assoc) { | |
4313 | rcu_read_lock(); | |
4314 | have_sta = sta_info_get(sdata, cbss->bssid); | |
4315 | rcu_read_unlock(); | |
4316 | } | |
4317 | ||
4318 | if (!have_sta) { | |
4319 | new_sta = sta_info_alloc(sdata, cbss->bssid, GFP_KERNEL); | |
4320 | if (!new_sta) | |
4321 | return -ENOMEM; | |
4322 | } | |
179b8fc7 CRI |
4323 | |
4324 | memcpy(&sta_ht_cap, &sband->ht_cap, sizeof(sta_ht_cap)); | |
4325 | ieee80211_apply_htcap_overrides(sdata, &sta_ht_cap); | |
4326 | ||
4327 | is_override = (sta_ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40) != | |
4328 | (sband->ht_cap.cap & | |
4329 | IEEE80211_HT_CAP_SUP_WIDTH_20_40); | |
4330 | ||
4331 | if (new_sta || is_override) { | |
4332 | err = ieee80211_prep_channel(sdata, cbss); | |
4333 | if (err) { | |
4334 | if (new_sta) | |
4335 | sta_info_free(local, new_sta); | |
4336 | return -EINVAL; | |
4337 | } | |
4338 | } | |
4339 | ||
13e0c8e3 | 4340 | if (new_sta) { |
5d6a1b06 JB |
4341 | u32 rates = 0, basic_rates = 0; |
4342 | bool have_higher_than_11mbit; | |
4343 | int min_rate = INT_MAX, min_rate_index = -1; | |
2103dec1 | 4344 | struct ieee80211_chanctx_conf *chanctx_conf; |
8cef2c9d | 4345 | const struct cfg80211_bss_ies *ies; |
179b8fc7 | 4346 | int shift = ieee80211_vif_get_shift(&sdata->vif); |
2103dec1 | 4347 | u32 rate_flags; |
b17166a7 | 4348 | |
2103dec1 SW |
4349 | rcu_read_lock(); |
4350 | chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); | |
4351 | if (WARN_ON(!chanctx_conf)) { | |
4352 | rcu_read_unlock(); | |
c368ddaa | 4353 | sta_info_free(local, new_sta); |
2103dec1 SW |
4354 | return -EINVAL; |
4355 | } | |
4356 | rate_flags = ieee80211_chandef_rate_flags(&chanctx_conf->def); | |
4357 | rcu_read_unlock(); | |
5d6a1b06 | 4358 | |
5d6a1b06 JB |
4359 | ieee80211_get_rates(sband, bss->supp_rates, |
4360 | bss->supp_rates_len, | |
4361 | &rates, &basic_rates, | |
4362 | &have_higher_than_11mbit, | |
2103dec1 SW |
4363 | &min_rate, &min_rate_index, |
4364 | shift, rate_flags); | |
5d6a1b06 JB |
4365 | |
4366 | /* | |
4367 | * This used to be a workaround for basic rates missing | |
4368 | * in the association response frame. Now that we no | |
4369 | * longer use the basic rates from there, it probably | |
4370 | * doesn't happen any more, but keep the workaround so | |
4371 | * in case some *other* APs are buggy in different ways | |
4372 | * we can connect -- with a warning. | |
4373 | */ | |
4374 | if (!basic_rates && min_rate_index >= 0) { | |
bdcbd8e0 JB |
4375 | sdata_info(sdata, |
4376 | "No basic rates, using min rate instead\n"); | |
5d6a1b06 JB |
4377 | basic_rates = BIT(min_rate_index); |
4378 | } | |
4379 | ||
13e0c8e3 | 4380 | new_sta->sta.supp_rates[cbss->channel->band] = rates; |
5d6a1b06 JB |
4381 | sdata->vif.bss_conf.basic_rates = basic_rates; |
4382 | ||
4383 | /* cf. IEEE 802.11 9.2.12 */ | |
55de908a | 4384 | if (cbss->channel->band == IEEE80211_BAND_2GHZ && |
5d6a1b06 JB |
4385 | have_higher_than_11mbit) |
4386 | sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE; | |
4387 | else | |
4388 | sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE; | |
4389 | ||
4390 | memcpy(ifmgd->bssid, cbss->bssid, ETH_ALEN); | |
4391 | ||
8c358bcd JB |
4392 | /* set timing information */ |
4393 | sdata->vif.bss_conf.beacon_int = cbss->beacon_interval; | |
8cef2c9d | 4394 | rcu_read_lock(); |
ef429dad JB |
4395 | ies = rcu_dereference(cbss->beacon_ies); |
4396 | if (ies) { | |
4397 | const u8 *tim_ie; | |
4398 | ||
4399 | sdata->vif.bss_conf.sync_tsf = ies->tsf; | |
4400 | sdata->vif.bss_conf.sync_device_ts = | |
4401 | bss->device_ts_beacon; | |
4402 | tim_ie = cfg80211_find_ie(WLAN_EID_TIM, | |
4403 | ies->data, ies->len); | |
4404 | if (tim_ie && tim_ie[1] >= 2) | |
4405 | sdata->vif.bss_conf.sync_dtim_count = tim_ie[2]; | |
4406 | else | |
4407 | sdata->vif.bss_conf.sync_dtim_count = 0; | |
4408 | } else if (!(local->hw.flags & | |
4409 | IEEE80211_HW_TIMING_BEACON_ONLY)) { | |
4410 | ies = rcu_dereference(cbss->proberesp_ies); | |
4411 | /* must be non-NULL since beacon IEs were NULL */ | |
4412 | sdata->vif.bss_conf.sync_tsf = ies->tsf; | |
4413 | sdata->vif.bss_conf.sync_device_ts = | |
4414 | bss->device_ts_presp; | |
4415 | sdata->vif.bss_conf.sync_dtim_count = 0; | |
4416 | } else { | |
4417 | sdata->vif.bss_conf.sync_tsf = 0; | |
4418 | sdata->vif.bss_conf.sync_device_ts = 0; | |
4419 | sdata->vif.bss_conf.sync_dtim_count = 0; | |
4420 | } | |
8cef2c9d | 4421 | rcu_read_unlock(); |
8c358bcd JB |
4422 | |
4423 | /* tell driver about BSSID, basic rates and timing */ | |
5d6a1b06 | 4424 | ieee80211_bss_info_change_notify(sdata, |
8c358bcd JB |
4425 | BSS_CHANGED_BSSID | BSS_CHANGED_BASIC_RATES | |
4426 | BSS_CHANGED_BEACON_INT); | |
a1cf775d JB |
4427 | |
4428 | if (assoc) | |
13e0c8e3 | 4429 | sta_info_pre_move_state(new_sta, IEEE80211_STA_AUTH); |
a1cf775d | 4430 | |
13e0c8e3 JB |
4431 | err = sta_info_insert(new_sta); |
4432 | new_sta = NULL; | |
a1cf775d | 4433 | if (err) { |
bdcbd8e0 JB |
4434 | sdata_info(sdata, |
4435 | "failed to insert STA entry for the AP (error %d)\n", | |
4436 | err); | |
a1cf775d JB |
4437 | return err; |
4438 | } | |
4439 | } else | |
b203ca39 | 4440 | WARN_ON_ONCE(!ether_addr_equal(ifmgd->bssid, cbss->bssid)); |
a1cf775d JB |
4441 | |
4442 | return 0; | |
4443 | } | |
4444 | ||
77fdaa12 JB |
4445 | /* config hooks */ |
4446 | int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, | |
4447 | struct cfg80211_auth_request *req) | |
9c6bd790 | 4448 | { |
66e67e41 JB |
4449 | struct ieee80211_local *local = sdata->local; |
4450 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
4451 | struct ieee80211_mgd_auth_data *auth_data; | |
77fdaa12 | 4452 | u16 auth_alg; |
66e67e41 JB |
4453 | int err; |
4454 | ||
4455 | /* prepare auth data structure */ | |
9c6bd790 | 4456 | |
77fdaa12 JB |
4457 | switch (req->auth_type) { |
4458 | case NL80211_AUTHTYPE_OPEN_SYSTEM: | |
4459 | auth_alg = WLAN_AUTH_OPEN; | |
4460 | break; | |
4461 | case NL80211_AUTHTYPE_SHARED_KEY: | |
66e67e41 | 4462 | if (IS_ERR(local->wep_tx_tfm)) |
9dca9c49 | 4463 | return -EOPNOTSUPP; |
77fdaa12 JB |
4464 | auth_alg = WLAN_AUTH_SHARED_KEY; |
4465 | break; | |
4466 | case NL80211_AUTHTYPE_FT: | |
4467 | auth_alg = WLAN_AUTH_FT; | |
4468 | break; | |
4469 | case NL80211_AUTHTYPE_NETWORK_EAP: | |
4470 | auth_alg = WLAN_AUTH_LEAP; | |
4471 | break; | |
6b8ece3a JM |
4472 | case NL80211_AUTHTYPE_SAE: |
4473 | auth_alg = WLAN_AUTH_SAE; | |
4474 | break; | |
77fdaa12 JB |
4475 | default: |
4476 | return -EOPNOTSUPP; | |
60f8b39c | 4477 | } |
77fdaa12 | 4478 | |
6b8ece3a JM |
4479 | auth_data = kzalloc(sizeof(*auth_data) + req->sae_data_len + |
4480 | req->ie_len, GFP_KERNEL); | |
66e67e41 | 4481 | if (!auth_data) |
9c6bd790 | 4482 | return -ENOMEM; |
77fdaa12 | 4483 | |
66e67e41 | 4484 | auth_data->bss = req->bss; |
77fdaa12 | 4485 | |
6b8ece3a JM |
4486 | if (req->sae_data_len >= 4) { |
4487 | __le16 *pos = (__le16 *) req->sae_data; | |
4488 | auth_data->sae_trans = le16_to_cpu(pos[0]); | |
4489 | auth_data->sae_status = le16_to_cpu(pos[1]); | |
4490 | memcpy(auth_data->data, req->sae_data + 4, | |
4491 | req->sae_data_len - 4); | |
4492 | auth_data->data_len += req->sae_data_len - 4; | |
4493 | } | |
4494 | ||
77fdaa12 | 4495 | if (req->ie && req->ie_len) { |
6b8ece3a JM |
4496 | memcpy(&auth_data->data[auth_data->data_len], |
4497 | req->ie, req->ie_len); | |
4498 | auth_data->data_len += req->ie_len; | |
9c6bd790 | 4499 | } |
77fdaa12 | 4500 | |
fffd0934 | 4501 | if (req->key && req->key_len) { |
66e67e41 JB |
4502 | auth_data->key_len = req->key_len; |
4503 | auth_data->key_idx = req->key_idx; | |
4504 | memcpy(auth_data->key, req->key, req->key_len); | |
fffd0934 JB |
4505 | } |
4506 | ||
66e67e41 | 4507 | auth_data->algorithm = auth_alg; |
60f8b39c | 4508 | |
66e67e41 | 4509 | /* try to authenticate/probe */ |
2a33bee2 | 4510 | |
66e67e41 JB |
4511 | if ((ifmgd->auth_data && !ifmgd->auth_data->done) || |
4512 | ifmgd->assoc_data) { | |
4513 | err = -EBUSY; | |
4514 | goto err_free; | |
2a33bee2 GE |
4515 | } |
4516 | ||
66e67e41 JB |
4517 | if (ifmgd->auth_data) |
4518 | ieee80211_destroy_auth_data(sdata, false); | |
2a33bee2 | 4519 | |
66e67e41 JB |
4520 | /* prep auth_data so we don't go into idle on disassoc */ |
4521 | ifmgd->auth_data = auth_data; | |
af6b6374 | 4522 | |
7b119dc0 JB |
4523 | if (ifmgd->associated) { |
4524 | u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN]; | |
4525 | ||
4526 | ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, | |
4527 | WLAN_REASON_UNSPECIFIED, | |
4528 | false, frame_buf); | |
4529 | ||
a90faa9d EG |
4530 | ieee80211_report_disconnect(sdata, frame_buf, |
4531 | sizeof(frame_buf), true, | |
4532 | WLAN_REASON_UNSPECIFIED); | |
7b119dc0 | 4533 | } |
af6b6374 | 4534 | |
bdcbd8e0 | 4535 | sdata_info(sdata, "authenticate with %pM\n", req->bss->bssid); |
e5b900d2 | 4536 | |
a1cf775d JB |
4537 | err = ieee80211_prep_connection(sdata, req->bss, false); |
4538 | if (err) | |
66e67e41 | 4539 | goto err_clear; |
af6b6374 | 4540 | |
66e67e41 JB |
4541 | err = ieee80211_probe_auth(sdata); |
4542 | if (err) { | |
66e67e41 JB |
4543 | sta_info_destroy_addr(sdata, req->bss->bssid); |
4544 | goto err_clear; | |
4545 | } | |
4546 | ||
4547 | /* hold our own reference */ | |
5b112d3d | 4548 | cfg80211_ref_bss(local->hw.wiphy, auth_data->bss); |
8d61ffa5 | 4549 | return 0; |
66e67e41 JB |
4550 | |
4551 | err_clear: | |
3d2abdfd EP |
4552 | memset(ifmgd->bssid, 0, ETH_ALEN); |
4553 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID); | |
66e67e41 JB |
4554 | ifmgd->auth_data = NULL; |
4555 | err_free: | |
4556 | kfree(auth_data); | |
66e67e41 | 4557 | return err; |
af6b6374 JB |
4558 | } |
4559 | ||
095d81ce JB |
4560 | static bool ieee80211_usable_wmm_params(struct ieee80211_sub_if_data *sdata, |
4561 | const u8 *wmm_param, int len) | |
4562 | { | |
4563 | const u8 *pos; | |
4564 | size_t left; | |
4565 | ||
4566 | if (len < 8) | |
4567 | return false; | |
4568 | ||
4569 | if (wmm_param[5] != 1 /* version */) | |
4570 | return false; | |
4571 | ||
4572 | pos = wmm_param + 8; | |
4573 | left = len - 8; | |
4574 | ||
4575 | for (; left >= 4; left -= 4, pos += 4) { | |
4576 | u8 aifsn = pos[0] & 0x0f; | |
4577 | u8 ecwmin = pos[1] & 0x0f; | |
4578 | u8 ecwmax = (pos[1] & 0xf0) >> 4; | |
4579 | int aci = (pos[0] >> 5) & 0x03; | |
4580 | ||
4581 | if (aifsn < 2) { | |
4582 | sdata_info(sdata, | |
4583 | "AP has invalid WMM params (AIFSN=%d for ACI %d), disabling WMM\n", | |
4584 | aifsn, aci); | |
4585 | return false; | |
4586 | } | |
4587 | if (ecwmin > ecwmax) { | |
4588 | sdata_info(sdata, | |
4589 | "AP has invalid WMM params (ECWmin/max=%d/%d for ACI %d), disabling WMM\n", | |
4590 | ecwmin, ecwmax, aci); | |
4591 | return false; | |
4592 | } | |
4593 | } | |
4594 | ||
4595 | return true; | |
4596 | } | |
4597 | ||
77fdaa12 JB |
4598 | int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, |
4599 | struct cfg80211_assoc_request *req) | |
f0706e82 | 4600 | { |
66e67e41 | 4601 | struct ieee80211_local *local = sdata->local; |
77fdaa12 | 4602 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
0c1ad2ca | 4603 | struct ieee80211_bss *bss = (void *)req->bss->priv; |
66e67e41 | 4604 | struct ieee80211_mgd_assoc_data *assoc_data; |
c65dd147 | 4605 | const struct cfg80211_bss_ies *beacon_ies; |
4e74bfdb | 4606 | struct ieee80211_supported_band *sband; |
b08fbbd8 | 4607 | const u8 *ssidie, *ht_ie, *vht_ie; |
2a33bee2 | 4608 | int i, err; |
f0706e82 | 4609 | |
66e67e41 JB |
4610 | assoc_data = kzalloc(sizeof(*assoc_data) + req->ie_len, GFP_KERNEL); |
4611 | if (!assoc_data) | |
4612 | return -ENOMEM; | |
4613 | ||
9caf0364 JB |
4614 | rcu_read_lock(); |
4615 | ssidie = ieee80211_bss_get_ie(req->bss, WLAN_EID_SSID); | |
4616 | if (!ssidie) { | |
4617 | rcu_read_unlock(); | |
4618 | kfree(assoc_data); | |
4619 | return -EINVAL; | |
4620 | } | |
4621 | memcpy(assoc_data->ssid, ssidie + 2, ssidie[1]); | |
4622 | assoc_data->ssid_len = ssidie[1]; | |
4623 | rcu_read_unlock(); | |
4624 | ||
7b119dc0 JB |
4625 | if (ifmgd->associated) { |
4626 | u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN]; | |
4627 | ||
4628 | ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, | |
4629 | WLAN_REASON_UNSPECIFIED, | |
4630 | false, frame_buf); | |
4631 | ||
a90faa9d EG |
4632 | ieee80211_report_disconnect(sdata, frame_buf, |
4633 | sizeof(frame_buf), true, | |
4634 | WLAN_REASON_UNSPECIFIED); | |
7b119dc0 | 4635 | } |
66e67e41 JB |
4636 | |
4637 | if (ifmgd->auth_data && !ifmgd->auth_data->done) { | |
4638 | err = -EBUSY; | |
4639 | goto err_free; | |
af6b6374 | 4640 | } |
77fdaa12 | 4641 | |
66e67e41 JB |
4642 | if (ifmgd->assoc_data) { |
4643 | err = -EBUSY; | |
4644 | goto err_free; | |
4645 | } | |
77fdaa12 | 4646 | |
66e67e41 JB |
4647 | if (ifmgd->auth_data) { |
4648 | bool match; | |
4649 | ||
4650 | /* keep sta info, bssid if matching */ | |
b203ca39 | 4651 | match = ether_addr_equal(ifmgd->bssid, req->bss->bssid); |
66e67e41 | 4652 | ieee80211_destroy_auth_data(sdata, match); |
2a33bee2 GE |
4653 | } |
4654 | ||
66e67e41 | 4655 | /* prepare assoc data */ |
095d81ce | 4656 | |
d8ec4433 JO |
4657 | ifmgd->beacon_crc_valid = false; |
4658 | ||
095d81ce JB |
4659 | assoc_data->wmm = bss->wmm_used && |
4660 | (local->hw.queues >= IEEE80211_NUM_ACS); | |
4661 | if (assoc_data->wmm) { | |
4662 | /* try to check validity of WMM params IE */ | |
4663 | const struct cfg80211_bss_ies *ies; | |
4664 | const u8 *wp, *start, *end; | |
4665 | ||
4666 | rcu_read_lock(); | |
4667 | ies = rcu_dereference(req->bss->ies); | |
4668 | start = ies->data; | |
4669 | end = start + ies->len; | |
4670 | ||
4671 | while (true) { | |
4672 | wp = cfg80211_find_vendor_ie( | |
4673 | WLAN_OUI_MICROSOFT, | |
4674 | WLAN_OUI_TYPE_MICROSOFT_WMM, | |
4675 | start, end - start); | |
4676 | if (!wp) | |
4677 | break; | |
4678 | start = wp + wp[1] + 2; | |
4679 | /* if this IE is too short, try the next */ | |
4680 | if (wp[1] <= 4) | |
4681 | continue; | |
4682 | /* if this IE is WMM params, we found what we wanted */ | |
4683 | if (wp[6] == 1) | |
4684 | break; | |
4685 | } | |
4686 | ||
4687 | if (!wp || !ieee80211_usable_wmm_params(sdata, wp + 2, | |
4688 | wp[1] - 2)) { | |
4689 | assoc_data->wmm = false; | |
4690 | ifmgd->flags |= IEEE80211_STA_DISABLE_WMM; | |
4691 | } | |
4692 | rcu_read_unlock(); | |
4693 | } | |
4694 | ||
de5036aa JB |
4695 | /* |
4696 | * IEEE802.11n does not allow TKIP/WEP as pairwise ciphers in HT mode. | |
4697 | * We still associate in non-HT mode (11a/b/g) if any one of these | |
4698 | * ciphers is configured as pairwise. | |
4699 | * We can set this to true for non-11n hardware, that'll be checked | |
4700 | * separately along with the peer capabilities. | |
4701 | */ | |
1c4cb928 | 4702 | for (i = 0; i < req->crypto.n_ciphers_pairwise; i++) { |
77fdaa12 JB |
4703 | if (req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_WEP40 || |
4704 | req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_TKIP || | |
1c4cb928 | 4705 | req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_WEP104) { |
a8243b72 | 4706 | ifmgd->flags |= IEEE80211_STA_DISABLE_HT; |
d545daba | 4707 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; |
1c4cb928 | 4708 | netdev_info(sdata->dev, |
d545daba | 4709 | "disabling HT/VHT due to WEP/TKIP use\n"); |
1c4cb928 JB |
4710 | } |
4711 | } | |
77fdaa12 | 4712 | |
d545daba | 4713 | if (req->flags & ASSOC_REQ_DISABLE_HT) { |
a8243b72 | 4714 | ifmgd->flags |= IEEE80211_STA_DISABLE_HT; |
d545daba MP |
4715 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; |
4716 | } | |
ef96a842 | 4717 | |
dd5ecfea JB |
4718 | if (req->flags & ASSOC_REQ_DISABLE_VHT) |
4719 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; | |
4720 | ||
4e74bfdb JB |
4721 | /* Also disable HT if we don't support it or the AP doesn't use WMM */ |
4722 | sband = local->hw.wiphy->bands[req->bss->channel->band]; | |
4723 | if (!sband->ht_cap.ht_supported || | |
095d81ce JB |
4724 | local->hw.queues < IEEE80211_NUM_ACS || !bss->wmm_used || |
4725 | ifmgd->flags & IEEE80211_STA_DISABLE_WMM) { | |
a8243b72 | 4726 | ifmgd->flags |= IEEE80211_STA_DISABLE_HT; |
095d81ce JB |
4727 | if (!bss->wmm_used && |
4728 | !(ifmgd->flags & IEEE80211_STA_DISABLE_WMM)) | |
1b49de26 JB |
4729 | netdev_info(sdata->dev, |
4730 | "disabling HT as WMM/QoS is not supported by the AP\n"); | |
1c4cb928 | 4731 | } |
4e74bfdb | 4732 | |
d545daba MP |
4733 | /* disable VHT if we don't support it or the AP doesn't use WMM */ |
4734 | if (!sband->vht_cap.vht_supported || | |
095d81ce JB |
4735 | local->hw.queues < IEEE80211_NUM_ACS || !bss->wmm_used || |
4736 | ifmgd->flags & IEEE80211_STA_DISABLE_WMM) { | |
d545daba | 4737 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; |
095d81ce JB |
4738 | if (!bss->wmm_used && |
4739 | !(ifmgd->flags & IEEE80211_STA_DISABLE_WMM)) | |
1b49de26 JB |
4740 | netdev_info(sdata->dev, |
4741 | "disabling VHT as WMM/QoS is not supported by the AP\n"); | |
d545daba MP |
4742 | } |
4743 | ||
ef96a842 BG |
4744 | memcpy(&ifmgd->ht_capa, &req->ht_capa, sizeof(ifmgd->ht_capa)); |
4745 | memcpy(&ifmgd->ht_capa_mask, &req->ht_capa_mask, | |
4746 | sizeof(ifmgd->ht_capa_mask)); | |
4747 | ||
dd5ecfea JB |
4748 | memcpy(&ifmgd->vht_capa, &req->vht_capa, sizeof(ifmgd->vht_capa)); |
4749 | memcpy(&ifmgd->vht_capa_mask, &req->vht_capa_mask, | |
4750 | sizeof(ifmgd->vht_capa_mask)); | |
4751 | ||
77fdaa12 | 4752 | if (req->ie && req->ie_len) { |
66e67e41 JB |
4753 | memcpy(assoc_data->ie, req->ie, req->ie_len); |
4754 | assoc_data->ie_len = req->ie_len; | |
4755 | } | |
f679f65d | 4756 | |
66e67e41 | 4757 | assoc_data->bss = req->bss; |
f679f65d | 4758 | |
af6b6374 JB |
4759 | if (ifmgd->req_smps == IEEE80211_SMPS_AUTOMATIC) { |
4760 | if (ifmgd->powersave) | |
04ecd257 | 4761 | sdata->smps_mode = IEEE80211_SMPS_DYNAMIC; |
af6b6374 | 4762 | else |
04ecd257 | 4763 | sdata->smps_mode = IEEE80211_SMPS_OFF; |
af6b6374 | 4764 | } else |
04ecd257 | 4765 | sdata->smps_mode = ifmgd->req_smps; |
af6b6374 | 4766 | |
66e67e41 | 4767 | assoc_data->capability = req->bss->capability; |
66e67e41 JB |
4768 | assoc_data->supp_rates = bss->supp_rates; |
4769 | assoc_data->supp_rates_len = bss->supp_rates_len; | |
9dde6423 | 4770 | |
9caf0364 | 4771 | rcu_read_lock(); |
9dde6423 JB |
4772 | ht_ie = ieee80211_bss_get_ie(req->bss, WLAN_EID_HT_OPERATION); |
4773 | if (ht_ie && ht_ie[1] >= sizeof(struct ieee80211_ht_operation)) | |
4774 | assoc_data->ap_ht_param = | |
4775 | ((struct ieee80211_ht_operation *)(ht_ie + 2))->ht_param; | |
4776 | else | |
a8243b72 | 4777 | ifmgd->flags |= IEEE80211_STA_DISABLE_HT; |
b08fbbd8 JB |
4778 | vht_ie = ieee80211_bss_get_ie(req->bss, WLAN_EID_VHT_CAPABILITY); |
4779 | if (vht_ie && vht_ie[1] >= sizeof(struct ieee80211_vht_cap)) | |
4780 | memcpy(&assoc_data->ap_vht_cap, vht_ie + 2, | |
4781 | sizeof(struct ieee80211_vht_cap)); | |
4782 | else | |
4783 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; | |
9caf0364 | 4784 | rcu_read_unlock(); |
63f170e0 | 4785 | |
848955cc JB |
4786 | if (WARN((sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_UAPSD) && |
4787 | (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK), | |
4788 | "U-APSD not supported with HW_PS_NULLFUNC_STACK\n")) | |
4789 | sdata->vif.driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD; | |
4790 | ||
ab13315a | 4791 | if (bss->wmm_used && bss->uapsd_supported && |
848955cc | 4792 | (sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_UAPSD)) { |
76f0303d | 4793 | assoc_data->uapsd = true; |
ab13315a KV |
4794 | ifmgd->flags |= IEEE80211_STA_UAPSD_ENABLED; |
4795 | } else { | |
76f0303d | 4796 | assoc_data->uapsd = false; |
ab13315a KV |
4797 | ifmgd->flags &= ~IEEE80211_STA_UAPSD_ENABLED; |
4798 | } | |
4799 | ||
77fdaa12 | 4800 | if (req->prev_bssid) |
66e67e41 | 4801 | memcpy(assoc_data->prev_bssid, req->prev_bssid, ETH_ALEN); |
77fdaa12 JB |
4802 | |
4803 | if (req->use_mfp) { | |
4804 | ifmgd->mfp = IEEE80211_MFP_REQUIRED; | |
4805 | ifmgd->flags |= IEEE80211_STA_MFP_ENABLED; | |
4806 | } else { | |
4807 | ifmgd->mfp = IEEE80211_MFP_DISABLED; | |
4808 | ifmgd->flags &= ~IEEE80211_STA_MFP_ENABLED; | |
4809 | } | |
4810 | ||
cd2f5dd7 AK |
4811 | if (req->flags & ASSOC_REQ_USE_RRM) |
4812 | ifmgd->flags |= IEEE80211_STA_ENABLE_RRM; | |
4813 | else | |
4814 | ifmgd->flags &= ~IEEE80211_STA_ENABLE_RRM; | |
4815 | ||
77fdaa12 JB |
4816 | if (req->crypto.control_port) |
4817 | ifmgd->flags |= IEEE80211_STA_CONTROL_PORT; | |
4818 | else | |
4819 | ifmgd->flags &= ~IEEE80211_STA_CONTROL_PORT; | |
4820 | ||
a621fa4d JB |
4821 | sdata->control_port_protocol = req->crypto.control_port_ethertype; |
4822 | sdata->control_port_no_encrypt = req->crypto.control_port_no_encrypt; | |
2475b1cc MS |
4823 | sdata->encrypt_headroom = ieee80211_cs_headroom(local, &req->crypto, |
4824 | sdata->vif.type); | |
a621fa4d | 4825 | |
66e67e41 JB |
4826 | /* kick off associate process */ |
4827 | ||
4828 | ifmgd->assoc_data = assoc_data; | |
826262c3 | 4829 | ifmgd->dtim_period = 0; |
989c6505 | 4830 | ifmgd->have_beacon = false; |
66e67e41 | 4831 | |
a1cf775d JB |
4832 | err = ieee80211_prep_connection(sdata, req->bss, true); |
4833 | if (err) | |
4834 | goto err_clear; | |
66e67e41 | 4835 | |
c65dd147 EG |
4836 | rcu_read_lock(); |
4837 | beacon_ies = rcu_dereference(req->bss->beacon_ies); | |
826262c3 | 4838 | |
c65dd147 EG |
4839 | if (sdata->local->hw.flags & IEEE80211_HW_NEED_DTIM_BEFORE_ASSOC && |
4840 | !beacon_ies) { | |
4841 | /* | |
4842 | * Wait up to one beacon interval ... | |
4843 | * should this be more if we miss one? | |
4844 | */ | |
4845 | sdata_info(sdata, "waiting for beacon from %pM\n", | |
4846 | ifmgd->bssid); | |
4847 | assoc_data->timeout = TU_TO_EXP_TIME(req->bss->beacon_interval); | |
89afe614 | 4848 | assoc_data->timeout_started = true; |
c65dd147 EG |
4849 | assoc_data->need_beacon = true; |
4850 | } else if (beacon_ies) { | |
4851 | const u8 *tim_ie = cfg80211_find_ie(WLAN_EID_TIM, | |
4852 | beacon_ies->data, | |
4853 | beacon_ies->len); | |
ef429dad JB |
4854 | u8 dtim_count = 0; |
4855 | ||
c65dd147 EG |
4856 | if (tim_ie && tim_ie[1] >= sizeof(struct ieee80211_tim_ie)) { |
4857 | const struct ieee80211_tim_ie *tim; | |
4858 | tim = (void *)(tim_ie + 2); | |
4859 | ifmgd->dtim_period = tim->dtim_period; | |
ef429dad | 4860 | dtim_count = tim->dtim_count; |
826262c3 | 4861 | } |
989c6505 | 4862 | ifmgd->have_beacon = true; |
66e67e41 | 4863 | assoc_data->timeout = jiffies; |
89afe614 | 4864 | assoc_data->timeout_started = true; |
ef429dad JB |
4865 | |
4866 | if (local->hw.flags & IEEE80211_HW_TIMING_BEACON_ONLY) { | |
4867 | sdata->vif.bss_conf.sync_tsf = beacon_ies->tsf; | |
4868 | sdata->vif.bss_conf.sync_device_ts = | |
4869 | bss->device_ts_beacon; | |
4870 | sdata->vif.bss_conf.sync_dtim_count = dtim_count; | |
4871 | } | |
c65dd147 EG |
4872 | } else { |
4873 | assoc_data->timeout = jiffies; | |
89afe614 | 4874 | assoc_data->timeout_started = true; |
66e67e41 | 4875 | } |
c65dd147 EG |
4876 | rcu_read_unlock(); |
4877 | ||
8d61ffa5 | 4878 | run_again(sdata, assoc_data->timeout); |
66e67e41 | 4879 | |
fcff4f10 PS |
4880 | if (bss->corrupt_data) { |
4881 | char *corrupt_type = "data"; | |
4882 | if (bss->corrupt_data & IEEE80211_BSS_CORRUPT_BEACON) { | |
4883 | if (bss->corrupt_data & | |
4884 | IEEE80211_BSS_CORRUPT_PROBE_RESP) | |
4885 | corrupt_type = "beacon and probe response"; | |
4886 | else | |
4887 | corrupt_type = "beacon"; | |
4888 | } else if (bss->corrupt_data & IEEE80211_BSS_CORRUPT_PROBE_RESP) | |
4889 | corrupt_type = "probe response"; | |
bdcbd8e0 JB |
4890 | sdata_info(sdata, "associating with AP with corrupt %s\n", |
4891 | corrupt_type); | |
fcff4f10 PS |
4892 | } |
4893 | ||
8d61ffa5 | 4894 | return 0; |
66e67e41 | 4895 | err_clear: |
3d2abdfd EP |
4896 | memset(ifmgd->bssid, 0, ETH_ALEN); |
4897 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID); | |
66e67e41 JB |
4898 | ifmgd->assoc_data = NULL; |
4899 | err_free: | |
4900 | kfree(assoc_data); | |
66e67e41 | 4901 | return err; |
f0706e82 JB |
4902 | } |
4903 | ||
77fdaa12 | 4904 | int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, |
63c9c5e7 | 4905 | struct cfg80211_deauth_request *req) |
f0706e82 | 4906 | { |
46900298 | 4907 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
6ae16775 | 4908 | u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN]; |
6863255b | 4909 | bool tx = !req->local_state_change; |
f0706e82 | 4910 | |
c9c3a060 JB |
4911 | if (ifmgd->auth_data && |
4912 | ether_addr_equal(ifmgd->auth_data->bss->bssid, req->bssid)) { | |
4913 | sdata_info(sdata, | |
4914 | "aborting authentication with %pM by local choice (Reason: %u=%s)\n", | |
4915 | req->bssid, req->reason_code, | |
4916 | ieee80211_get_reason_code_string(req->reason_code)); | |
0ff71613 | 4917 | |
8c7d857c | 4918 | drv_mgd_prepare_tx(sdata->local, sdata); |
37ad3888 JB |
4919 | ieee80211_send_deauth_disassoc(sdata, req->bssid, |
4920 | IEEE80211_STYPE_DEAUTH, | |
6863255b | 4921 | req->reason_code, tx, |
37ad3888 | 4922 | frame_buf); |
86552017 | 4923 | ieee80211_destroy_auth_data(sdata, false); |
a90faa9d EG |
4924 | ieee80211_report_disconnect(sdata, frame_buf, |
4925 | sizeof(frame_buf), true, | |
4926 | req->reason_code); | |
86552017 | 4927 | |
c9c3a060 | 4928 | return 0; |
8c7d857c EG |
4929 | } |
4930 | ||
86552017 JB |
4931 | if (ifmgd->associated && |
4932 | ether_addr_equal(ifmgd->associated->bssid, req->bssid)) { | |
c9c3a060 JB |
4933 | sdata_info(sdata, |
4934 | "deauthenticating from %pM by local choice (Reason: %u=%s)\n", | |
4935 | req->bssid, req->reason_code, | |
4936 | ieee80211_get_reason_code_string(req->reason_code)); | |
4937 | ||
86552017 JB |
4938 | ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, |
4939 | req->reason_code, tx, frame_buf); | |
a90faa9d EG |
4940 | ieee80211_report_disconnect(sdata, frame_buf, |
4941 | sizeof(frame_buf), true, | |
4942 | req->reason_code); | |
c9c3a060 JB |
4943 | return 0; |
4944 | } | |
86552017 | 4945 | |
c9c3a060 | 4946 | return -ENOTCONN; |
f0706e82 | 4947 | } |
84363e6e | 4948 | |
77fdaa12 | 4949 | int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, |
63c9c5e7 | 4950 | struct cfg80211_disassoc_request *req) |
9c6bd790 | 4951 | { |
77fdaa12 | 4952 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
e69e95db | 4953 | u8 bssid[ETH_ALEN]; |
6ae16775 | 4954 | u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN]; |
9c6bd790 | 4955 | |
8d8b261a JB |
4956 | /* |
4957 | * cfg80211 should catch this ... but it's racy since | |
4958 | * we can receive a disassoc frame, process it, hand it | |
4959 | * to cfg80211 while that's in a locked section already | |
4960 | * trying to tell us that the user wants to disconnect. | |
4961 | */ | |
8d61ffa5 | 4962 | if (ifmgd->associated != req->bss) |
77fdaa12 | 4963 | return -ENOLINK; |
77fdaa12 | 4964 | |
bdcbd8e0 | 4965 | sdata_info(sdata, |
dfa1ad29 CO |
4966 | "disassociating from %pM by local choice (Reason: %u=%s)\n", |
4967 | req->bss->bssid, req->reason_code, ieee80211_get_reason_code_string(req->reason_code)); | |
0ff71613 | 4968 | |
e69e95db | 4969 | memcpy(bssid, req->bss->bssid, ETH_ALEN); |
37ad3888 JB |
4970 | ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DISASSOC, |
4971 | req->reason_code, !req->local_state_change, | |
4972 | frame_buf); | |
10f644a4 | 4973 | |
a90faa9d EG |
4974 | ieee80211_report_disconnect(sdata, frame_buf, sizeof(frame_buf), true, |
4975 | req->reason_code); | |
bc83b681 | 4976 | |
10f644a4 JB |
4977 | return 0; |
4978 | } | |
026331c4 | 4979 | |
afa762f6 | 4980 | void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata) |
54e4ffb2 JB |
4981 | { |
4982 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
4983 | ||
49921859 BG |
4984 | /* |
4985 | * Make sure some work items will not run after this, | |
4986 | * they will not do anything but might not have been | |
4987 | * cancelled when disconnecting. | |
4988 | */ | |
4989 | cancel_work_sync(&ifmgd->monitor_work); | |
4990 | cancel_work_sync(&ifmgd->beacon_connection_loss_work); | |
4991 | cancel_work_sync(&ifmgd->request_smps_work); | |
4992 | cancel_work_sync(&ifmgd->csa_connection_drop_work); | |
4993 | cancel_work_sync(&ifmgd->chswitch_work); | |
81dd2b88 | 4994 | cancel_delayed_work_sync(&ifmgd->tdls_peer_del_work); |
49921859 | 4995 | |
8d61ffa5 | 4996 | sdata_lock(sdata); |
959867fa JB |
4997 | if (ifmgd->assoc_data) { |
4998 | struct cfg80211_bss *bss = ifmgd->assoc_data->bss; | |
54e4ffb2 | 4999 | ieee80211_destroy_assoc_data(sdata, false); |
959867fa JB |
5000 | cfg80211_assoc_timeout(sdata->dev, bss); |
5001 | } | |
54e4ffb2 JB |
5002 | if (ifmgd->auth_data) |
5003 | ieee80211_destroy_auth_data(sdata, false); | |
1277b4a9 LK |
5004 | spin_lock_bh(&ifmgd->teardown_lock); |
5005 | if (ifmgd->teardown_skb) { | |
5006 | kfree_skb(ifmgd->teardown_skb); | |
5007 | ifmgd->teardown_skb = NULL; | |
5008 | ifmgd->orig_teardown_skb = NULL; | |
5009 | } | |
5010 | spin_unlock_bh(&ifmgd->teardown_lock); | |
54e4ffb2 | 5011 | del_timer_sync(&ifmgd->timer); |
8d61ffa5 | 5012 | sdata_unlock(sdata); |
54e4ffb2 JB |
5013 | } |
5014 | ||
a97c13c3 JO |
5015 | void ieee80211_cqm_rssi_notify(struct ieee80211_vif *vif, |
5016 | enum nl80211_cqm_rssi_threshold_event rssi_event, | |
5017 | gfp_t gfp) | |
5018 | { | |
5019 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
5020 | ||
b5878a2d JB |
5021 | trace_api_cqm_rssi_notify(sdata, rssi_event); |
5022 | ||
a97c13c3 JO |
5023 | cfg80211_cqm_rssi_notify(sdata->dev, rssi_event, gfp); |
5024 | } | |
5025 | EXPORT_SYMBOL(ieee80211_cqm_rssi_notify); | |
98f03342 JB |
5026 | |
5027 | void ieee80211_cqm_beacon_loss_notify(struct ieee80211_vif *vif, gfp_t gfp) | |
5028 | { | |
5029 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
5030 | ||
5031 | trace_api_cqm_beacon_loss_notify(sdata->local, sdata); | |
5032 | ||
5033 | cfg80211_cqm_beacon_loss_notify(sdata->dev, gfp); | |
5034 | } | |
5035 | EXPORT_SYMBOL(ieee80211_cqm_beacon_loss_notify); |