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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> | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License version 2 as | |
11 | * published by the Free Software Foundation. | |
12 | */ | |
13 | ||
5b323edb | 14 | #include <linux/delay.h> |
f0706e82 JB |
15 | #include <linux/if_ether.h> |
16 | #include <linux/skbuff.h> | |
f0706e82 | 17 | #include <linux/if_arp.h> |
f0706e82 | 18 | #include <linux/etherdevice.h> |
d9b93842 | 19 | #include <linux/moduleparam.h> |
d0709a65 | 20 | #include <linux/rtnetlink.h> |
e8db0be1 | 21 | #include <linux/pm_qos.h> |
d91f36db | 22 | #include <linux/crc32.h> |
5a0e3ad6 | 23 | #include <linux/slab.h> |
bc3b2d7f | 24 | #include <linux/export.h> |
f0706e82 | 25 | #include <net/mac80211.h> |
472dbc45 | 26 | #include <asm/unaligned.h> |
60f8b39c | 27 | |
f0706e82 | 28 | #include "ieee80211_i.h" |
24487981 | 29 | #include "driver-ops.h" |
2c8dccc7 JB |
30 | #include "rate.h" |
31 | #include "led.h" | |
f0706e82 | 32 | |
1672c0e3 JB |
33 | #define IEEE80211_AUTH_TIMEOUT (HZ / 5) |
34 | #define IEEE80211_AUTH_TIMEOUT_SHORT (HZ / 10) | |
35 | #define IEEE80211_AUTH_MAX_TRIES 3 | |
36 | #define IEEE80211_AUTH_WAIT_ASSOC (HZ * 5) | |
37 | #define IEEE80211_ASSOC_TIMEOUT (HZ / 5) | |
38 | #define IEEE80211_ASSOC_TIMEOUT_SHORT (HZ / 10) | |
39 | #define IEEE80211_ASSOC_MAX_TRIES 3 | |
66e67e41 | 40 | |
180205bd BG |
41 | static int max_nullfunc_tries = 2; |
42 | module_param(max_nullfunc_tries, int, 0644); | |
43 | MODULE_PARM_DESC(max_nullfunc_tries, | |
44 | "Maximum nullfunc tx tries before disconnecting (reason 4)."); | |
45 | ||
46 | static int max_probe_tries = 5; | |
47 | module_param(max_probe_tries, int, 0644); | |
48 | MODULE_PARM_DESC(max_probe_tries, | |
49 | "Maximum probe tries before disconnecting (reason 4)."); | |
b291ba11 JB |
50 | |
51 | /* | |
7ccc8bd7 FF |
52 | * Beacon loss timeout is calculated as N frames times the |
53 | * advertised beacon interval. This may need to be somewhat | |
54 | * higher than what hardware might detect to account for | |
55 | * delays in the host processing frames. But since we also | |
56 | * probe on beacon miss before declaring the connection lost | |
57 | * default to what we want. | |
b291ba11 | 58 | */ |
59c1ec2b BG |
59 | static int beacon_loss_count = 7; |
60 | module_param(beacon_loss_count, int, 0644); | |
61 | MODULE_PARM_DESC(beacon_loss_count, | |
62 | "Number of beacon intervals before we decide beacon was lost."); | |
7ccc8bd7 | 63 | |
b291ba11 JB |
64 | /* |
65 | * Time the connection can be idle before we probe | |
66 | * it to see if we can still talk to the AP. | |
67 | */ | |
d1c5091f | 68 | #define IEEE80211_CONNECTION_IDLE_TIME (30 * HZ) |
b291ba11 JB |
69 | /* |
70 | * Time we wait for a probe response after sending | |
71 | * a probe request because of beacon loss or for | |
72 | * checking the connection still works. | |
73 | */ | |
180205bd BG |
74 | static int probe_wait_ms = 500; |
75 | module_param(probe_wait_ms, int, 0644); | |
76 | MODULE_PARM_DESC(probe_wait_ms, | |
77 | "Maximum time(ms) to wait for probe response" | |
78 | " before disconnecting (reason 4)."); | |
f0706e82 | 79 | |
17e4ec14 JM |
80 | /* |
81 | * Weight given to the latest Beacon frame when calculating average signal | |
82 | * strength for Beacon frames received in the current BSS. This must be | |
83 | * between 1 and 15. | |
84 | */ | |
85 | #define IEEE80211_SIGNAL_AVE_WEIGHT 3 | |
86 | ||
391a200a JM |
87 | /* |
88 | * How many Beacon frames need to have been used in average signal strength | |
89 | * before starting to indicate signal change events. | |
90 | */ | |
91 | #define IEEE80211_SIGNAL_AVE_MIN_COUNT 4 | |
92 | ||
77fdaa12 JB |
93 | /* |
94 | * All cfg80211 functions have to be called outside a locked | |
95 | * section so that they can acquire a lock themselves... This | |
96 | * is much simpler than queuing up things in cfg80211, but we | |
97 | * do need some indirection for that here. | |
98 | */ | |
99 | enum rx_mgmt_action { | |
100 | /* no action required */ | |
101 | RX_MGMT_NONE, | |
102 | ||
77fdaa12 JB |
103 | /* caller must call cfg80211_send_deauth() */ |
104 | RX_MGMT_CFG80211_DEAUTH, | |
105 | ||
106 | /* caller must call cfg80211_send_disassoc() */ | |
107 | RX_MGMT_CFG80211_DISASSOC, | |
66e67e41 JB |
108 | |
109 | /* caller must call cfg80211_send_rx_auth() */ | |
110 | RX_MGMT_CFG80211_RX_AUTH, | |
111 | ||
112 | /* caller must call cfg80211_send_rx_assoc() */ | |
113 | RX_MGMT_CFG80211_RX_ASSOC, | |
114 | ||
115 | /* caller must call cfg80211_send_assoc_timeout() */ | |
116 | RX_MGMT_CFG80211_ASSOC_TIMEOUT, | |
30eb1dc2 JB |
117 | |
118 | /* used when a processed beacon causes a deauth */ | |
119 | RX_MGMT_CFG80211_TX_DEAUTH, | |
77fdaa12 JB |
120 | }; |
121 | ||
5484e237 | 122 | /* utils */ |
77fdaa12 JB |
123 | static inline void ASSERT_MGD_MTX(struct ieee80211_if_managed *ifmgd) |
124 | { | |
46a5ebaf | 125 | lockdep_assert_held(&ifmgd->mtx); |
77fdaa12 JB |
126 | } |
127 | ||
ca386f31 JB |
128 | /* |
129 | * We can have multiple work items (and connection probing) | |
130 | * scheduling this timer, but we need to take care to only | |
131 | * reschedule it when it should fire _earlier_ than it was | |
132 | * asked for before, or if it's not pending right now. This | |
133 | * function ensures that. Note that it then is required to | |
134 | * run this function for all timeouts after the first one | |
135 | * has happened -- the work that runs from this timer will | |
136 | * do that. | |
137 | */ | |
66e67e41 | 138 | static void run_again(struct ieee80211_if_managed *ifmgd, unsigned long timeout) |
ca386f31 JB |
139 | { |
140 | ASSERT_MGD_MTX(ifmgd); | |
141 | ||
142 | if (!timer_pending(&ifmgd->timer) || | |
143 | time_before(timeout, ifmgd->timer.expires)) | |
144 | mod_timer(&ifmgd->timer, timeout); | |
145 | } | |
146 | ||
d3a910a8 | 147 | void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata) |
b291ba11 | 148 | { |
c1288b12 | 149 | if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER) |
b291ba11 JB |
150 | return; |
151 | ||
7eeff74c JB |
152 | if (sdata->local->hw.flags & IEEE80211_HW_CONNECTION_MONITOR) |
153 | return; | |
154 | ||
b291ba11 | 155 | mod_timer(&sdata->u.mgd.bcn_mon_timer, |
7ccc8bd7 | 156 | round_jiffies_up(jiffies + sdata->u.mgd.beacon_timeout)); |
b291ba11 JB |
157 | } |
158 | ||
be099e82 LR |
159 | void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata) |
160 | { | |
0c699c3a LR |
161 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
162 | ||
8628172f SG |
163 | if (unlikely(!sdata->u.mgd.associated)) |
164 | return; | |
165 | ||
be099e82 LR |
166 | if (sdata->local->hw.flags & IEEE80211_HW_CONNECTION_MONITOR) |
167 | return; | |
168 | ||
169 | mod_timer(&sdata->u.mgd.conn_mon_timer, | |
170 | round_jiffies_up(jiffies + IEEE80211_CONNECTION_IDLE_TIME)); | |
0c699c3a LR |
171 | |
172 | ifmgd->probe_send_count = 0; | |
be099e82 LR |
173 | } |
174 | ||
5484e237 | 175 | static int ecw2cw(int ecw) |
60f8b39c | 176 | { |
5484e237 | 177 | return (1 << ecw) - 1; |
60f8b39c JB |
178 | } |
179 | ||
6565ec9b JB |
180 | static u32 chandef_downgrade(struct cfg80211_chan_def *c) |
181 | { | |
182 | u32 ret; | |
183 | int tmp; | |
184 | ||
185 | switch (c->width) { | |
186 | case NL80211_CHAN_WIDTH_20: | |
187 | c->width = NL80211_CHAN_WIDTH_20_NOHT; | |
188 | ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT; | |
189 | break; | |
190 | case NL80211_CHAN_WIDTH_40: | |
191 | c->width = NL80211_CHAN_WIDTH_20; | |
192 | c->center_freq1 = c->chan->center_freq; | |
193 | ret = IEEE80211_STA_DISABLE_40MHZ | | |
194 | IEEE80211_STA_DISABLE_VHT; | |
195 | break; | |
196 | case NL80211_CHAN_WIDTH_80: | |
197 | tmp = (30 + c->chan->center_freq - c->center_freq1)/20; | |
198 | /* n_P40 */ | |
199 | tmp /= 2; | |
200 | /* freq_P40 */ | |
201 | c->center_freq1 = c->center_freq1 - 20 + 40 * tmp; | |
202 | c->width = NL80211_CHAN_WIDTH_40; | |
203 | ret = IEEE80211_STA_DISABLE_VHT; | |
204 | break; | |
205 | case NL80211_CHAN_WIDTH_80P80: | |
206 | c->center_freq2 = 0; | |
207 | c->width = NL80211_CHAN_WIDTH_80; | |
208 | ret = IEEE80211_STA_DISABLE_80P80MHZ | | |
209 | IEEE80211_STA_DISABLE_160MHZ; | |
210 | break; | |
211 | case NL80211_CHAN_WIDTH_160: | |
212 | /* n_P20 */ | |
213 | tmp = (70 + c->chan->center_freq - c->center_freq1)/20; | |
214 | /* n_P80 */ | |
215 | tmp /= 4; | |
216 | c->center_freq1 = c->center_freq1 - 40 + 80 * tmp; | |
217 | c->width = NL80211_CHAN_WIDTH_80; | |
218 | ret = IEEE80211_STA_DISABLE_80P80MHZ | | |
219 | IEEE80211_STA_DISABLE_160MHZ; | |
220 | break; | |
221 | default: | |
222 | case NL80211_CHAN_WIDTH_20_NOHT: | |
223 | WARN_ON_ONCE(1); | |
224 | c->width = NL80211_CHAN_WIDTH_20_NOHT; | |
225 | ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT; | |
226 | break; | |
227 | } | |
228 | ||
229 | WARN_ON_ONCE(!cfg80211_chandef_valid(c)); | |
230 | ||
231 | return ret; | |
232 | } | |
233 | ||
234 | static u32 | |
235 | ieee80211_determine_chantype(struct ieee80211_sub_if_data *sdata, | |
236 | struct ieee80211_supported_band *sband, | |
237 | struct ieee80211_channel *channel, | |
238 | const struct ieee80211_ht_operation *ht_oper, | |
239 | const struct ieee80211_vht_operation *vht_oper, | |
30eb1dc2 | 240 | struct cfg80211_chan_def *chandef, bool verbose) |
6565ec9b JB |
241 | { |
242 | struct cfg80211_chan_def vht_chandef; | |
243 | u32 ht_cfreq, ret; | |
244 | ||
245 | chandef->chan = channel; | |
246 | chandef->width = NL80211_CHAN_WIDTH_20_NOHT; | |
247 | chandef->center_freq1 = channel->center_freq; | |
248 | chandef->center_freq2 = 0; | |
249 | ||
250 | if (!ht_oper || !sband->ht_cap.ht_supported) { | |
251 | ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT; | |
252 | goto out; | |
253 | } | |
254 | ||
255 | chandef->width = NL80211_CHAN_WIDTH_20; | |
256 | ||
257 | ht_cfreq = ieee80211_channel_to_frequency(ht_oper->primary_chan, | |
258 | channel->band); | |
259 | /* check that channel matches the right operating channel */ | |
260 | if (channel->center_freq != ht_cfreq) { | |
261 | /* | |
262 | * It's possible that some APs are confused here; | |
263 | * Netgear WNDR3700 sometimes reports 4 higher than | |
264 | * the actual channel in association responses, but | |
265 | * since we look at probe response/beacon data here | |
266 | * it should be OK. | |
267 | */ | |
30eb1dc2 JB |
268 | if (verbose) |
269 | sdata_info(sdata, | |
270 | "Wrong control channel: center-freq: %d ht-cfreq: %d ht->primary_chan: %d band: %d - Disabling HT\n", | |
271 | channel->center_freq, ht_cfreq, | |
272 | ht_oper->primary_chan, channel->band); | |
6565ec9b JB |
273 | ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT; |
274 | goto out; | |
275 | } | |
276 | ||
277 | /* check 40 MHz support, if we have it */ | |
278 | if (sband->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40) { | |
279 | switch (ht_oper->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) { | |
280 | case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: | |
281 | chandef->width = NL80211_CHAN_WIDTH_40; | |
282 | chandef->center_freq1 += 10; | |
283 | break; | |
284 | case IEEE80211_HT_PARAM_CHA_SEC_BELOW: | |
285 | chandef->width = NL80211_CHAN_WIDTH_40; | |
286 | chandef->center_freq1 -= 10; | |
287 | break; | |
288 | } | |
289 | } else { | |
290 | /* 40 MHz (and 80 MHz) must be supported for VHT */ | |
291 | ret = IEEE80211_STA_DISABLE_VHT; | |
85220d71 JB |
292 | /* also mark 40 MHz disabled */ |
293 | ret |= IEEE80211_STA_DISABLE_40MHZ; | |
6565ec9b JB |
294 | goto out; |
295 | } | |
296 | ||
297 | if (!vht_oper || !sband->vht_cap.vht_supported) { | |
298 | ret = IEEE80211_STA_DISABLE_VHT; | |
299 | goto out; | |
300 | } | |
301 | ||
302 | vht_chandef.chan = channel; | |
303 | vht_chandef.center_freq1 = | |
304 | ieee80211_channel_to_frequency(vht_oper->center_freq_seg1_idx, | |
305 | channel->band); | |
306 | vht_chandef.center_freq2 = 0; | |
307 | ||
6565ec9b JB |
308 | switch (vht_oper->chan_width) { |
309 | case IEEE80211_VHT_CHANWIDTH_USE_HT: | |
310 | vht_chandef.width = chandef->width; | |
311 | break; | |
312 | case IEEE80211_VHT_CHANWIDTH_80MHZ: | |
313 | vht_chandef.width = NL80211_CHAN_WIDTH_80; | |
314 | break; | |
315 | case IEEE80211_VHT_CHANWIDTH_160MHZ: | |
316 | vht_chandef.width = NL80211_CHAN_WIDTH_160; | |
317 | break; | |
318 | case IEEE80211_VHT_CHANWIDTH_80P80MHZ: | |
319 | vht_chandef.width = NL80211_CHAN_WIDTH_80P80; | |
6553bf04 JB |
320 | vht_chandef.center_freq2 = |
321 | ieee80211_channel_to_frequency( | |
322 | vht_oper->center_freq_seg2_idx, | |
323 | channel->band); | |
6565ec9b JB |
324 | break; |
325 | default: | |
30eb1dc2 JB |
326 | if (verbose) |
327 | sdata_info(sdata, | |
328 | "AP VHT operation IE has invalid channel width (%d), disable VHT\n", | |
329 | vht_oper->chan_width); | |
6565ec9b JB |
330 | ret = IEEE80211_STA_DISABLE_VHT; |
331 | goto out; | |
332 | } | |
333 | ||
334 | if (!cfg80211_chandef_valid(&vht_chandef)) { | |
30eb1dc2 JB |
335 | if (verbose) |
336 | sdata_info(sdata, | |
337 | "AP VHT information is invalid, disable VHT\n"); | |
6565ec9b JB |
338 | ret = IEEE80211_STA_DISABLE_VHT; |
339 | goto out; | |
340 | } | |
341 | ||
342 | if (cfg80211_chandef_identical(chandef, &vht_chandef)) { | |
343 | ret = 0; | |
344 | goto out; | |
345 | } | |
346 | ||
347 | if (!cfg80211_chandef_compatible(chandef, &vht_chandef)) { | |
30eb1dc2 JB |
348 | if (verbose) |
349 | sdata_info(sdata, | |
350 | "AP VHT information doesn't match HT, disable VHT\n"); | |
6565ec9b JB |
351 | ret = IEEE80211_STA_DISABLE_VHT; |
352 | goto out; | |
353 | } | |
354 | ||
355 | *chandef = vht_chandef; | |
356 | ||
357 | ret = 0; | |
358 | ||
359 | out: | |
586e01ed JB |
360 | /* don't print the message below for VHT mismatch if VHT is disabled */ |
361 | if (ret & IEEE80211_STA_DISABLE_VHT) | |
362 | vht_chandef = *chandef; | |
363 | ||
6565ec9b JB |
364 | while (!cfg80211_chandef_usable(sdata->local->hw.wiphy, chandef, |
365 | IEEE80211_CHAN_DISABLED)) { | |
366 | if (WARN_ON(chandef->width == NL80211_CHAN_WIDTH_20_NOHT)) { | |
367 | ret = IEEE80211_STA_DISABLE_HT | | |
368 | IEEE80211_STA_DISABLE_VHT; | |
369 | goto out; | |
370 | } | |
371 | ||
372 | ret |= chandef_downgrade(chandef); | |
373 | } | |
374 | ||
30eb1dc2 | 375 | if (chandef->width != vht_chandef.width && verbose) |
6565ec9b JB |
376 | sdata_info(sdata, |
377 | "capabilities/regulatory prevented using AP HT/VHT configuration, downgraded\n"); | |
378 | ||
379 | WARN_ON_ONCE(!cfg80211_chandef_valid(chandef)); | |
380 | return ret; | |
381 | } | |
382 | ||
30eb1dc2 JB |
383 | static int ieee80211_config_bw(struct ieee80211_sub_if_data *sdata, |
384 | struct sta_info *sta, | |
385 | const struct ieee80211_ht_operation *ht_oper, | |
386 | const struct ieee80211_vht_operation *vht_oper, | |
387 | const u8 *bssid, u32 *changed) | |
d5522e03 JB |
388 | { |
389 | struct ieee80211_local *local = sdata->local; | |
30eb1dc2 | 390 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
d5522e03 | 391 | struct ieee80211_supported_band *sband; |
55de908a | 392 | struct ieee80211_channel *chan; |
30eb1dc2 | 393 | struct cfg80211_chan_def chandef; |
9ed6bcce | 394 | u16 ht_opmode; |
30eb1dc2 JB |
395 | u32 flags; |
396 | enum ieee80211_sta_rx_bandwidth new_sta_bw; | |
397 | int ret; | |
d5522e03 | 398 | |
30eb1dc2 JB |
399 | /* if HT was/is disabled, don't track any bandwidth changes */ |
400 | if (ifmgd->flags & IEEE80211_STA_DISABLE_HT || !ht_oper) | |
1128958d JB |
401 | return 0; |
402 | ||
30eb1dc2 JB |
403 | /* don't check VHT if we associated as non-VHT station */ |
404 | if (ifmgd->flags & IEEE80211_STA_DISABLE_VHT) | |
405 | vht_oper = NULL; | |
406 | ||
407 | if (WARN_ON_ONCE(!sta)) | |
408 | return -EINVAL; | |
409 | ||
f2d9330e | 410 | chan = sdata->vif.bss_conf.chandef.chan; |
55de908a | 411 | sband = local->hw.wiphy->bands[chan->band]; |
d5522e03 | 412 | |
30eb1dc2 JB |
413 | /* calculate new channel (type) based on HT/VHT operation IEs */ |
414 | flags = ieee80211_determine_chantype(sdata, sband, chan, ht_oper, | |
415 | vht_oper, &chandef, false); | |
416 | ||
417 | /* | |
418 | * Downgrade the new channel if we associated with restricted | |
419 | * capabilities. For example, if we associated as a 20 MHz STA | |
420 | * to a 40 MHz AP (due to regulatory, capabilities or config | |
421 | * reasons) then switching to a 40 MHz channel now won't do us | |
422 | * any good -- we couldn't use it with the AP. | |
423 | */ | |
424 | if (ifmgd->flags & IEEE80211_STA_DISABLE_80P80MHZ && | |
425 | chandef.width == NL80211_CHAN_WIDTH_80P80) | |
426 | flags |= chandef_downgrade(&chandef); | |
427 | if (ifmgd->flags & IEEE80211_STA_DISABLE_160MHZ && | |
428 | chandef.width == NL80211_CHAN_WIDTH_160) | |
429 | flags |= chandef_downgrade(&chandef); | |
430 | if (ifmgd->flags & IEEE80211_STA_DISABLE_40MHZ && | |
431 | chandef.width > NL80211_CHAN_WIDTH_20) | |
432 | flags |= chandef_downgrade(&chandef); | |
433 | ||
434 | if (cfg80211_chandef_identical(&chandef, &sdata->vif.bss_conf.chandef)) | |
435 | return 0; | |
436 | ||
437 | sdata_info(sdata, | |
438 | "AP %pM changed bandwidth, new config is %d MHz, width %d (%d/%d MHz)\n", | |
439 | ifmgd->bssid, chandef.chan->center_freq, chandef.width, | |
440 | chandef.center_freq1, chandef.center_freq2); | |
441 | ||
442 | if (flags != (ifmgd->flags & (IEEE80211_STA_DISABLE_HT | | |
443 | IEEE80211_STA_DISABLE_VHT | | |
444 | IEEE80211_STA_DISABLE_40MHZ | | |
445 | IEEE80211_STA_DISABLE_80P80MHZ | | |
446 | IEEE80211_STA_DISABLE_160MHZ)) || | |
447 | !cfg80211_chandef_valid(&chandef)) { | |
448 | sdata_info(sdata, | |
449 | "AP %pM changed bandwidth in a way we can't support - disconnect\n", | |
450 | ifmgd->bssid); | |
451 | return -EINVAL; | |
452 | } | |
453 | ||
454 | switch (chandef.width) { | |
455 | case NL80211_CHAN_WIDTH_20_NOHT: | |
456 | case NL80211_CHAN_WIDTH_20: | |
457 | new_sta_bw = IEEE80211_STA_RX_BW_20; | |
458 | break; | |
4bf88530 | 459 | case NL80211_CHAN_WIDTH_40: |
30eb1dc2 | 460 | new_sta_bw = IEEE80211_STA_RX_BW_40; |
64f68e5d | 461 | break; |
30eb1dc2 JB |
462 | case NL80211_CHAN_WIDTH_80: |
463 | new_sta_bw = IEEE80211_STA_RX_BW_80; | |
464 | break; | |
465 | case NL80211_CHAN_WIDTH_80P80: | |
466 | case NL80211_CHAN_WIDTH_160: | |
467 | new_sta_bw = IEEE80211_STA_RX_BW_160; | |
64f68e5d | 468 | break; |
30eb1dc2 JB |
469 | default: |
470 | return -EINVAL; | |
64f68e5d | 471 | } |
d5522e03 | 472 | |
30eb1dc2 JB |
473 | if (new_sta_bw > sta->cur_max_bandwidth) |
474 | new_sta_bw = sta->cur_max_bandwidth; | |
64f68e5d | 475 | |
30eb1dc2 JB |
476 | if (new_sta_bw < sta->sta.bandwidth) { |
477 | sta->sta.bandwidth = new_sta_bw; | |
478 | rate_control_rate_update(local, sband, sta, | |
479 | IEEE80211_RC_BW_CHANGED); | |
480 | } | |
64f68e5d | 481 | |
30eb1dc2 JB |
482 | ret = ieee80211_vif_change_bandwidth(sdata, &chandef, changed); |
483 | if (ret) { | |
484 | sdata_info(sdata, | |
485 | "AP %pM changed bandwidth to incompatible one - disconnect\n", | |
486 | ifmgd->bssid); | |
487 | return ret; | |
488 | } | |
7cc44ed4 | 489 | |
30eb1dc2 JB |
490 | if (new_sta_bw > sta->sta.bandwidth) { |
491 | sta->sta.bandwidth = new_sta_bw; | |
492 | rate_control_rate_update(local, sband, sta, | |
493 | IEEE80211_RC_BW_CHANGED); | |
0aaffa9b | 494 | } |
d5522e03 | 495 | |
074d46d1 | 496 | ht_opmode = le16_to_cpu(ht_oper->operation_mode); |
d5522e03 JB |
497 | |
498 | /* if bss configuration changed store the new one */ | |
30eb1dc2 JB |
499 | if (sdata->vif.bss_conf.ht_operation_mode != ht_opmode) { |
500 | *changed |= BSS_CHANGED_HT; | |
9ed6bcce | 501 | sdata->vif.bss_conf.ht_operation_mode = ht_opmode; |
d5522e03 JB |
502 | } |
503 | ||
30eb1dc2 | 504 | return 0; |
d5522e03 JB |
505 | } |
506 | ||
9c6bd790 JB |
507 | /* frame sending functions */ |
508 | ||
66e67e41 JB |
509 | static int ieee80211_compatible_rates(const u8 *supp_rates, int supp_rates_len, |
510 | struct ieee80211_supported_band *sband, | |
511 | u32 *rates) | |
512 | { | |
513 | int i, j, count; | |
514 | *rates = 0; | |
515 | count = 0; | |
516 | for (i = 0; i < supp_rates_len; i++) { | |
517 | int rate = (supp_rates[i] & 0x7F) * 5; | |
518 | ||
519 | for (j = 0; j < sband->n_bitrates; j++) | |
520 | if (sband->bitrates[j].bitrate == rate) { | |
521 | *rates |= BIT(j); | |
522 | count++; | |
523 | break; | |
524 | } | |
525 | } | |
526 | ||
527 | return count; | |
528 | } | |
529 | ||
530 | static void ieee80211_add_ht_ie(struct ieee80211_sub_if_data *sdata, | |
9dde6423 | 531 | struct sk_buff *skb, u8 ap_ht_param, |
66e67e41 JB |
532 | struct ieee80211_supported_band *sband, |
533 | struct ieee80211_channel *channel, | |
534 | enum ieee80211_smps_mode smps) | |
535 | { | |
66e67e41 JB |
536 | u8 *pos; |
537 | u32 flags = channel->flags; | |
538 | u16 cap; | |
539 | struct ieee80211_sta_ht_cap ht_cap; | |
540 | ||
541 | BUILD_BUG_ON(sizeof(ht_cap) != sizeof(sband->ht_cap)); | |
542 | ||
66e67e41 JB |
543 | memcpy(&ht_cap, &sband->ht_cap, sizeof(ht_cap)); |
544 | ieee80211_apply_htcap_overrides(sdata, &ht_cap); | |
545 | ||
66e67e41 JB |
546 | /* determine capability flags */ |
547 | cap = ht_cap.cap; | |
548 | ||
9dde6423 | 549 | switch (ap_ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) { |
66e67e41 JB |
550 | case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: |
551 | if (flags & IEEE80211_CHAN_NO_HT40PLUS) { | |
552 | cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; | |
553 | cap &= ~IEEE80211_HT_CAP_SGI_40; | |
554 | } | |
555 | break; | |
556 | case IEEE80211_HT_PARAM_CHA_SEC_BELOW: | |
557 | if (flags & IEEE80211_CHAN_NO_HT40MINUS) { | |
558 | cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; | |
559 | cap &= ~IEEE80211_HT_CAP_SGI_40; | |
560 | } | |
561 | break; | |
562 | } | |
563 | ||
24398e39 JB |
564 | /* |
565 | * If 40 MHz was disabled associate as though we weren't | |
566 | * capable of 40 MHz -- some broken APs will never fall | |
567 | * back to trying to transmit in 20 MHz. | |
568 | */ | |
569 | if (sdata->u.mgd.flags & IEEE80211_STA_DISABLE_40MHZ) { | |
570 | cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; | |
571 | cap &= ~IEEE80211_HT_CAP_SGI_40; | |
572 | } | |
573 | ||
66e67e41 JB |
574 | /* set SM PS mode properly */ |
575 | cap &= ~IEEE80211_HT_CAP_SM_PS; | |
576 | switch (smps) { | |
577 | case IEEE80211_SMPS_AUTOMATIC: | |
578 | case IEEE80211_SMPS_NUM_MODES: | |
579 | WARN_ON(1); | |
580 | case IEEE80211_SMPS_OFF: | |
581 | cap |= WLAN_HT_CAP_SM_PS_DISABLED << | |
582 | IEEE80211_HT_CAP_SM_PS_SHIFT; | |
583 | break; | |
584 | case IEEE80211_SMPS_STATIC: | |
585 | cap |= WLAN_HT_CAP_SM_PS_STATIC << | |
586 | IEEE80211_HT_CAP_SM_PS_SHIFT; | |
587 | break; | |
588 | case IEEE80211_SMPS_DYNAMIC: | |
589 | cap |= WLAN_HT_CAP_SM_PS_DYNAMIC << | |
590 | IEEE80211_HT_CAP_SM_PS_SHIFT; | |
591 | break; | |
592 | } | |
593 | ||
594 | /* reserve and fill IE */ | |
595 | pos = skb_put(skb, sizeof(struct ieee80211_ht_cap) + 2); | |
596 | ieee80211_ie_build_ht_cap(pos, &ht_cap, cap); | |
597 | } | |
598 | ||
d545daba MP |
599 | static void ieee80211_add_vht_ie(struct ieee80211_sub_if_data *sdata, |
600 | struct sk_buff *skb, | |
b08fbbd8 JB |
601 | struct ieee80211_supported_band *sband, |
602 | struct ieee80211_vht_cap *ap_vht_cap) | |
d545daba MP |
603 | { |
604 | u8 *pos; | |
605 | u32 cap; | |
606 | struct ieee80211_sta_vht_cap vht_cap; | |
607 | ||
608 | BUILD_BUG_ON(sizeof(vht_cap) != sizeof(sband->vht_cap)); | |
609 | ||
610 | memcpy(&vht_cap, &sband->vht_cap, sizeof(vht_cap)); | |
dd5ecfea | 611 | ieee80211_apply_vhtcap_overrides(sdata, &vht_cap); |
d545daba MP |
612 | |
613 | /* determine capability flags */ | |
614 | cap = vht_cap.cap; | |
615 | ||
f2d9d270 JB |
616 | if (sdata->u.mgd.flags & IEEE80211_STA_DISABLE_80P80MHZ) { |
617 | cap &= ~IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ; | |
618 | cap |= IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ; | |
619 | } | |
620 | ||
621 | if (sdata->u.mgd.flags & IEEE80211_STA_DISABLE_160MHZ) { | |
622 | cap &= ~IEEE80211_VHT_CAP_SHORT_GI_160; | |
623 | cap &= ~IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ; | |
624 | } | |
625 | ||
b08fbbd8 JB |
626 | /* |
627 | * Some APs apparently get confused if our capabilities are better | |
628 | * than theirs, so restrict what we advertise in the assoc request. | |
629 | */ | |
630 | if (!(ap_vht_cap->vht_cap_info & | |
631 | cpu_to_le32(IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE))) | |
632 | cap &= ~IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE; | |
633 | ||
d545daba | 634 | /* reserve and fill IE */ |
d4950281 | 635 | pos = skb_put(skb, sizeof(struct ieee80211_vht_cap) + 2); |
d545daba MP |
636 | ieee80211_ie_build_vht_cap(pos, &vht_cap, cap); |
637 | } | |
638 | ||
66e67e41 JB |
639 | static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata) |
640 | { | |
641 | struct ieee80211_local *local = sdata->local; | |
642 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
643 | struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data; | |
644 | struct sk_buff *skb; | |
645 | struct ieee80211_mgmt *mgmt; | |
646 | u8 *pos, qos_info; | |
647 | size_t offset = 0, noffset; | |
648 | int i, count, rates_len, supp_rates_len; | |
649 | u16 capab; | |
650 | struct ieee80211_supported_band *sband; | |
55de908a JB |
651 | struct ieee80211_chanctx_conf *chanctx_conf; |
652 | struct ieee80211_channel *chan; | |
66e67e41 | 653 | u32 rates = 0; |
66e67e41 JB |
654 | |
655 | lockdep_assert_held(&ifmgd->mtx); | |
656 | ||
55de908a JB |
657 | rcu_read_lock(); |
658 | chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); | |
659 | if (WARN_ON(!chanctx_conf)) { | |
660 | rcu_read_unlock(); | |
661 | return; | |
662 | } | |
4bf88530 | 663 | chan = chanctx_conf->def.chan; |
55de908a JB |
664 | rcu_read_unlock(); |
665 | sband = local->hw.wiphy->bands[chan->band]; | |
66e67e41 JB |
666 | |
667 | if (assoc_data->supp_rates_len) { | |
668 | /* | |
669 | * Get all rates supported by the device and the AP as | |
670 | * some APs don't like getting a superset of their rates | |
671 | * in the association request (e.g. D-Link DAP 1353 in | |
672 | * b-only mode)... | |
673 | */ | |
674 | rates_len = ieee80211_compatible_rates(assoc_data->supp_rates, | |
675 | assoc_data->supp_rates_len, | |
676 | sband, &rates); | |
677 | } else { | |
678 | /* | |
679 | * In case AP not provide any supported rates information | |
680 | * before association, we send information element(s) with | |
681 | * all rates that we support. | |
682 | */ | |
683 | rates = ~0; | |
684 | rates_len = sband->n_bitrates; | |
685 | } | |
686 | ||
687 | skb = alloc_skb(local->hw.extra_tx_headroom + | |
688 | sizeof(*mgmt) + /* bit too much but doesn't matter */ | |
689 | 2 + assoc_data->ssid_len + /* SSID */ | |
690 | 4 + rates_len + /* (extended) rates */ | |
691 | 4 + /* power capability */ | |
692 | 2 + 2 * sband->n_channels + /* supported channels */ | |
693 | 2 + sizeof(struct ieee80211_ht_cap) + /* HT */ | |
d4950281 | 694 | 2 + sizeof(struct ieee80211_vht_cap) + /* VHT */ |
66e67e41 JB |
695 | assoc_data->ie_len + /* extra IEs */ |
696 | 9, /* WMM */ | |
697 | GFP_KERNEL); | |
698 | if (!skb) | |
699 | return; | |
700 | ||
701 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
702 | ||
703 | capab = WLAN_CAPABILITY_ESS; | |
704 | ||
705 | if (sband->band == IEEE80211_BAND_2GHZ) { | |
706 | if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE)) | |
707 | capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME; | |
708 | if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE)) | |
709 | capab |= WLAN_CAPABILITY_SHORT_PREAMBLE; | |
710 | } | |
711 | ||
712 | if (assoc_data->capability & WLAN_CAPABILITY_PRIVACY) | |
713 | capab |= WLAN_CAPABILITY_PRIVACY; | |
714 | ||
715 | if ((assoc_data->capability & WLAN_CAPABILITY_SPECTRUM_MGMT) && | |
716 | (local->hw.flags & IEEE80211_HW_SPECTRUM_MGMT)) | |
717 | capab |= WLAN_CAPABILITY_SPECTRUM_MGMT; | |
718 | ||
719 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); | |
720 | memset(mgmt, 0, 24); | |
721 | memcpy(mgmt->da, assoc_data->bss->bssid, ETH_ALEN); | |
722 | memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); | |
723 | memcpy(mgmt->bssid, assoc_data->bss->bssid, ETH_ALEN); | |
724 | ||
725 | if (!is_zero_ether_addr(assoc_data->prev_bssid)) { | |
726 | skb_put(skb, 10); | |
727 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | | |
728 | IEEE80211_STYPE_REASSOC_REQ); | |
729 | mgmt->u.reassoc_req.capab_info = cpu_to_le16(capab); | |
730 | mgmt->u.reassoc_req.listen_interval = | |
731 | cpu_to_le16(local->hw.conf.listen_interval); | |
732 | memcpy(mgmt->u.reassoc_req.current_ap, assoc_data->prev_bssid, | |
733 | ETH_ALEN); | |
734 | } else { | |
735 | skb_put(skb, 4); | |
736 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | | |
737 | IEEE80211_STYPE_ASSOC_REQ); | |
738 | mgmt->u.assoc_req.capab_info = cpu_to_le16(capab); | |
739 | mgmt->u.assoc_req.listen_interval = | |
740 | cpu_to_le16(local->hw.conf.listen_interval); | |
741 | } | |
742 | ||
743 | /* SSID */ | |
744 | pos = skb_put(skb, 2 + assoc_data->ssid_len); | |
745 | *pos++ = WLAN_EID_SSID; | |
746 | *pos++ = assoc_data->ssid_len; | |
747 | memcpy(pos, assoc_data->ssid, assoc_data->ssid_len); | |
748 | ||
749 | /* add all rates which were marked to be used above */ | |
750 | supp_rates_len = rates_len; | |
751 | if (supp_rates_len > 8) | |
752 | supp_rates_len = 8; | |
753 | ||
754 | pos = skb_put(skb, supp_rates_len + 2); | |
755 | *pos++ = WLAN_EID_SUPP_RATES; | |
756 | *pos++ = supp_rates_len; | |
757 | ||
758 | count = 0; | |
759 | for (i = 0; i < sband->n_bitrates; i++) { | |
760 | if (BIT(i) & rates) { | |
761 | int rate = sband->bitrates[i].bitrate; | |
762 | *pos++ = (u8) (rate / 5); | |
763 | if (++count == 8) | |
764 | break; | |
765 | } | |
766 | } | |
767 | ||
768 | if (rates_len > count) { | |
769 | pos = skb_put(skb, rates_len - count + 2); | |
770 | *pos++ = WLAN_EID_EXT_SUPP_RATES; | |
771 | *pos++ = rates_len - count; | |
772 | ||
773 | for (i++; i < sband->n_bitrates; i++) { | |
774 | if (BIT(i) & rates) { | |
775 | int rate = sband->bitrates[i].bitrate; | |
776 | *pos++ = (u8) (rate / 5); | |
777 | } | |
778 | } | |
779 | } | |
780 | ||
781 | if (capab & WLAN_CAPABILITY_SPECTRUM_MGMT) { | |
782 | /* 1. power capabilities */ | |
783 | pos = skb_put(skb, 4); | |
784 | *pos++ = WLAN_EID_PWR_CAPABILITY; | |
785 | *pos++ = 2; | |
786 | *pos++ = 0; /* min tx power */ | |
55de908a | 787 | *pos++ = chan->max_power; /* max tx power */ |
66e67e41 JB |
788 | |
789 | /* 2. supported channels */ | |
790 | /* TODO: get this in reg domain format */ | |
791 | pos = skb_put(skb, 2 * sband->n_channels + 2); | |
792 | *pos++ = WLAN_EID_SUPPORTED_CHANNELS; | |
793 | *pos++ = 2 * sband->n_channels; | |
794 | for (i = 0; i < sband->n_channels; i++) { | |
795 | *pos++ = ieee80211_frequency_to_channel( | |
796 | sband->channels[i].center_freq); | |
797 | *pos++ = 1; /* one channel in the subband*/ | |
798 | } | |
799 | } | |
800 | ||
801 | /* if present, add any custom IEs that go before HT */ | |
802 | if (assoc_data->ie_len && assoc_data->ie) { | |
803 | static const u8 before_ht[] = { | |
804 | WLAN_EID_SSID, | |
805 | WLAN_EID_SUPP_RATES, | |
806 | WLAN_EID_EXT_SUPP_RATES, | |
807 | WLAN_EID_PWR_CAPABILITY, | |
808 | WLAN_EID_SUPPORTED_CHANNELS, | |
809 | WLAN_EID_RSN, | |
810 | WLAN_EID_QOS_CAPA, | |
811 | WLAN_EID_RRM_ENABLED_CAPABILITIES, | |
812 | WLAN_EID_MOBILITY_DOMAIN, | |
813 | WLAN_EID_SUPPORTED_REGULATORY_CLASSES, | |
814 | }; | |
815 | noffset = ieee80211_ie_split(assoc_data->ie, assoc_data->ie_len, | |
816 | before_ht, ARRAY_SIZE(before_ht), | |
817 | offset); | |
818 | pos = skb_put(skb, noffset - offset); | |
819 | memcpy(pos, assoc_data->ie + offset, noffset - offset); | |
820 | offset = noffset; | |
821 | } | |
822 | ||
f2d9d270 JB |
823 | if (WARN_ON_ONCE((ifmgd->flags & IEEE80211_STA_DISABLE_HT) && |
824 | !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))) | |
825 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; | |
826 | ||
a8243b72 | 827 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) |
9dde6423 | 828 | ieee80211_add_ht_ie(sdata, skb, assoc_data->ap_ht_param, |
04ecd257 | 829 | sband, chan, sdata->smps_mode); |
66e67e41 | 830 | |
d545daba | 831 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) |
b08fbbd8 JB |
832 | ieee80211_add_vht_ie(sdata, skb, sband, |
833 | &assoc_data->ap_vht_cap); | |
d545daba | 834 | |
66e67e41 JB |
835 | /* if present, add any custom non-vendor IEs that go after HT */ |
836 | if (assoc_data->ie_len && assoc_data->ie) { | |
837 | noffset = ieee80211_ie_split_vendor(assoc_data->ie, | |
838 | assoc_data->ie_len, | |
839 | offset); | |
840 | pos = skb_put(skb, noffset - offset); | |
841 | memcpy(pos, assoc_data->ie + offset, noffset - offset); | |
842 | offset = noffset; | |
843 | } | |
844 | ||
76f0303d JB |
845 | if (assoc_data->wmm) { |
846 | if (assoc_data->uapsd) { | |
dc41e4d4 EP |
847 | qos_info = ifmgd->uapsd_queues; |
848 | qos_info |= (ifmgd->uapsd_max_sp_len << | |
66e67e41 JB |
849 | IEEE80211_WMM_IE_STA_QOSINFO_SP_SHIFT); |
850 | } else { | |
851 | qos_info = 0; | |
852 | } | |
853 | ||
854 | pos = skb_put(skb, 9); | |
855 | *pos++ = WLAN_EID_VENDOR_SPECIFIC; | |
856 | *pos++ = 7; /* len */ | |
857 | *pos++ = 0x00; /* Microsoft OUI 00:50:F2 */ | |
858 | *pos++ = 0x50; | |
859 | *pos++ = 0xf2; | |
860 | *pos++ = 2; /* WME */ | |
861 | *pos++ = 0; /* WME info */ | |
862 | *pos++ = 1; /* WME ver */ | |
863 | *pos++ = qos_info; | |
864 | } | |
865 | ||
866 | /* add any remaining custom (i.e. vendor specific here) IEs */ | |
867 | if (assoc_data->ie_len && assoc_data->ie) { | |
868 | noffset = assoc_data->ie_len; | |
869 | pos = skb_put(skb, noffset - offset); | |
870 | memcpy(pos, assoc_data->ie + offset, noffset - offset); | |
871 | } | |
872 | ||
a1845fc7 JB |
873 | drv_mgd_prepare_tx(local, sdata); |
874 | ||
66e67e41 | 875 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; |
1672c0e3 JB |
876 | if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) |
877 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS | | |
878 | IEEE80211_TX_INTFL_MLME_CONN_TX; | |
66e67e41 JB |
879 | ieee80211_tx_skb(sdata, skb); |
880 | } | |
881 | ||
572e0012 KV |
882 | void ieee80211_send_pspoll(struct ieee80211_local *local, |
883 | struct ieee80211_sub_if_data *sdata) | |
884 | { | |
572e0012 KV |
885 | struct ieee80211_pspoll *pspoll; |
886 | struct sk_buff *skb; | |
572e0012 | 887 | |
d8cd189e KV |
888 | skb = ieee80211_pspoll_get(&local->hw, &sdata->vif); |
889 | if (!skb) | |
572e0012 | 890 | return; |
572e0012 | 891 | |
d8cd189e KV |
892 | pspoll = (struct ieee80211_pspoll *) skb->data; |
893 | pspoll->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM); | |
572e0012 | 894 | |
62ae67be JB |
895 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; |
896 | ieee80211_tx_skb(sdata, skb); | |
572e0012 KV |
897 | } |
898 | ||
965bedad JB |
899 | void ieee80211_send_nullfunc(struct ieee80211_local *local, |
900 | struct ieee80211_sub_if_data *sdata, | |
901 | int powersave) | |
902 | { | |
903 | struct sk_buff *skb; | |
d8cd189e | 904 | struct ieee80211_hdr_3addr *nullfunc; |
b6f35301 | 905 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
965bedad | 906 | |
d8cd189e KV |
907 | skb = ieee80211_nullfunc_get(&local->hw, &sdata->vif); |
908 | if (!skb) | |
965bedad | 909 | return; |
965bedad | 910 | |
d8cd189e | 911 | nullfunc = (struct ieee80211_hdr_3addr *) skb->data; |
965bedad | 912 | if (powersave) |
d8cd189e | 913 | nullfunc->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM); |
965bedad | 914 | |
6c17b77b SF |
915 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT | |
916 | IEEE80211_TX_INTFL_OFFCHAN_TX_OK; | |
b6f35301 RM |
917 | if (ifmgd->flags & (IEEE80211_STA_BEACON_POLL | |
918 | IEEE80211_STA_CONNECTION_POLL)) | |
919 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_USE_MINRATE; | |
920 | ||
62ae67be | 921 | ieee80211_tx_skb(sdata, skb); |
965bedad JB |
922 | } |
923 | ||
d524215f FF |
924 | static void ieee80211_send_4addr_nullfunc(struct ieee80211_local *local, |
925 | struct ieee80211_sub_if_data *sdata) | |
926 | { | |
927 | struct sk_buff *skb; | |
928 | struct ieee80211_hdr *nullfunc; | |
929 | __le16 fc; | |
930 | ||
931 | if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION)) | |
932 | return; | |
933 | ||
934 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + 30); | |
d15b8459 | 935 | if (!skb) |
d524215f | 936 | return; |
d15b8459 | 937 | |
d524215f FF |
938 | skb_reserve(skb, local->hw.extra_tx_headroom); |
939 | ||
940 | nullfunc = (struct ieee80211_hdr *) skb_put(skb, 30); | |
941 | memset(nullfunc, 0, 30); | |
942 | fc = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC | | |
943 | IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS); | |
944 | nullfunc->frame_control = fc; | |
945 | memcpy(nullfunc->addr1, sdata->u.mgd.bssid, ETH_ALEN); | |
946 | memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN); | |
947 | memcpy(nullfunc->addr3, sdata->u.mgd.bssid, ETH_ALEN); | |
948 | memcpy(nullfunc->addr4, sdata->vif.addr, ETH_ALEN); | |
949 | ||
950 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; | |
951 | ieee80211_tx_skb(sdata, skb); | |
952 | } | |
953 | ||
cc32abd4 JB |
954 | /* spectrum management related things */ |
955 | static void ieee80211_chswitch_work(struct work_struct *work) | |
956 | { | |
957 | struct ieee80211_sub_if_data *sdata = | |
958 | container_of(work, struct ieee80211_sub_if_data, u.mgd.chswitch_work); | |
675a0b04 | 959 | struct ieee80211_local *local = sdata->local; |
cc32abd4 JB |
960 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
961 | ||
9607e6b6 | 962 | if (!ieee80211_sdata_running(sdata)) |
cc32abd4 JB |
963 | return; |
964 | ||
77fdaa12 JB |
965 | mutex_lock(&ifmgd->mtx); |
966 | if (!ifmgd->associated) | |
967 | goto out; | |
cc32abd4 | 968 | |
85220d71 | 969 | local->_oper_chandef = local->csa_chandef; |
675a0b04 KB |
970 | |
971 | if (!local->ops->channel_switch) { | |
5ce6e438 | 972 | /* call "hw_config" only if doing sw channel switch */ |
675a0b04 | 973 | ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL); |
1ea57b1f SL |
974 | } else { |
975 | /* update the device channel directly */ | |
675a0b04 | 976 | local->hw.conf.chandef = local->_oper_chandef; |
5ce6e438 | 977 | } |
77fdaa12 | 978 | |
cc32abd4 | 979 | /* XXX: shouldn't really modify cfg80211-owned data! */ |
675a0b04 | 980 | ifmgd->associated->channel = local->_oper_chandef.chan; |
cc32abd4 | 981 | |
57eebdf3 | 982 | /* XXX: wait for a beacon first? */ |
675a0b04 | 983 | ieee80211_wake_queues_by_reason(&local->hw, |
445ea4e8 | 984 | IEEE80211_MAX_QUEUE_MAP, |
cc32abd4 | 985 | IEEE80211_QUEUE_STOP_REASON_CSA); |
77fdaa12 JB |
986 | out: |
987 | ifmgd->flags &= ~IEEE80211_STA_CSA_RECEIVED; | |
988 | mutex_unlock(&ifmgd->mtx); | |
cc32abd4 JB |
989 | } |
990 | ||
5ce6e438 JB |
991 | void ieee80211_chswitch_done(struct ieee80211_vif *vif, bool success) |
992 | { | |
55de908a JB |
993 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); |
994 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
5ce6e438 JB |
995 | |
996 | trace_api_chswitch_done(sdata, success); | |
997 | if (!success) { | |
882a7c69 JB |
998 | sdata_info(sdata, |
999 | "driver channel switch failed, disconnecting\n"); | |
1000 | ieee80211_queue_work(&sdata->local->hw, | |
1001 | &ifmgd->csa_connection_drop_work); | |
1002 | } else { | |
1003 | ieee80211_queue_work(&sdata->local->hw, &ifmgd->chswitch_work); | |
5ce6e438 | 1004 | } |
5ce6e438 JB |
1005 | } |
1006 | EXPORT_SYMBOL(ieee80211_chswitch_done); | |
1007 | ||
cc32abd4 JB |
1008 | static void ieee80211_chswitch_timer(unsigned long data) |
1009 | { | |
1010 | struct ieee80211_sub_if_data *sdata = | |
1011 | (struct ieee80211_sub_if_data *) data; | |
5bb644a0 | 1012 | |
9b7d72c1 | 1013 | ieee80211_queue_work(&sdata->local->hw, &sdata->u.mgd.chswitch_work); |
cc32abd4 JB |
1014 | } |
1015 | ||
37799e52 | 1016 | static void |
4a3cb702 | 1017 | ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata, |
37799e52 | 1018 | u64 timestamp, struct ieee802_11_elems *elems) |
cc32abd4 | 1019 | { |
b4f286a1 | 1020 | struct ieee80211_local *local = sdata->local; |
cc32abd4 | 1021 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
37799e52 JB |
1022 | struct cfg80211_bss *cbss = ifmgd->associated; |
1023 | struct ieee80211_bss *bss; | |
55de908a | 1024 | struct ieee80211_chanctx *chanctx; |
b4f286a1 JB |
1025 | enum ieee80211_band new_band; |
1026 | int new_freq; | |
1027 | u8 new_chan_no; | |
1028 | u8 count; | |
1029 | u8 mode; | |
85220d71 JB |
1030 | struct cfg80211_chan_def new_chandef = {}; |
1031 | int secondary_channel_offset = -1; | |
cc32abd4 | 1032 | |
77fdaa12 JB |
1033 | ASSERT_MGD_MTX(ifmgd); |
1034 | ||
37799e52 | 1035 | if (!cbss) |
cc32abd4 JB |
1036 | return; |
1037 | ||
b4f286a1 | 1038 | if (local->scanning) |
cc32abd4 JB |
1039 | return; |
1040 | ||
37799e52 | 1041 | /* disregard subsequent announcements if we are already processing */ |
cc32abd4 JB |
1042 | if (ifmgd->flags & IEEE80211_STA_CSA_RECEIVED) |
1043 | return; | |
1044 | ||
85220d71 JB |
1045 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) { |
1046 | /* if HT is enabled and the IE not present, it's still HT */ | |
1047 | secondary_channel_offset = IEEE80211_HT_PARAM_CHA_SEC_NONE; | |
1048 | if (elems->sec_chan_offs) | |
1049 | secondary_channel_offset = | |
1050 | elems->sec_chan_offs->sec_chan_offs; | |
1051 | } | |
1052 | ||
1053 | if (ifmgd->flags & IEEE80211_STA_DISABLE_40MHZ && | |
1054 | (secondary_channel_offset == IEEE80211_HT_PARAM_CHA_SEC_ABOVE || | |
1055 | secondary_channel_offset == IEEE80211_HT_PARAM_CHA_SEC_BELOW)) | |
1056 | secondary_channel_offset = IEEE80211_HT_PARAM_CHA_SEC_NONE; | |
1057 | ||
b4f286a1 JB |
1058 | if (elems->ext_chansw_ie) { |
1059 | if (!ieee80211_operating_class_to_band( | |
1060 | elems->ext_chansw_ie->new_operating_class, | |
1061 | &new_band)) { | |
1062 | sdata_info(sdata, | |
1063 | "cannot understand ECSA IE operating class %d, disconnecting\n", | |
1064 | elems->ext_chansw_ie->new_operating_class); | |
1065 | ieee80211_queue_work(&local->hw, | |
1066 | &ifmgd->csa_connection_drop_work); | |
1067 | } | |
1068 | new_chan_no = elems->ext_chansw_ie->new_ch_num; | |
1069 | count = elems->ext_chansw_ie->count; | |
1070 | mode = elems->ext_chansw_ie->mode; | |
1071 | } else if (elems->ch_switch_ie) { | |
1072 | new_band = cbss->channel->band; | |
1073 | new_chan_no = elems->ch_switch_ie->new_ch_num; | |
1074 | count = elems->ch_switch_ie->count; | |
1075 | mode = elems->ch_switch_ie->mode; | |
1076 | } else { | |
1077 | /* nothing here we understand */ | |
37799e52 | 1078 | return; |
b4f286a1 | 1079 | } |
37799e52 JB |
1080 | |
1081 | bss = (void *)cbss->priv; | |
1082 | ||
b4f286a1 | 1083 | new_freq = ieee80211_channel_to_frequency(new_chan_no, new_band); |
85220d71 JB |
1084 | new_chandef.chan = ieee80211_get_channel(sdata->local->hw.wiphy, new_freq); |
1085 | if (!new_chandef.chan || | |
1086 | new_chandef.chan->flags & IEEE80211_CHAN_DISABLED) { | |
882a7c69 JB |
1087 | sdata_info(sdata, |
1088 | "AP %pM switches to unsupported channel (%d MHz), disconnecting\n", | |
1089 | ifmgd->associated->bssid, new_freq); | |
b4f286a1 | 1090 | ieee80211_queue_work(&local->hw, |
882a7c69 | 1091 | &ifmgd->csa_connection_drop_work); |
cc32abd4 | 1092 | return; |
882a7c69 | 1093 | } |
cc32abd4 | 1094 | |
85220d71 JB |
1095 | switch (secondary_channel_offset) { |
1096 | default: | |
1097 | /* secondary_channel_offset was present but is invalid */ | |
1098 | case IEEE80211_HT_PARAM_CHA_SEC_NONE: | |
1099 | cfg80211_chandef_create(&new_chandef, new_chandef.chan, | |
1100 | NL80211_CHAN_HT20); | |
1101 | break; | |
1102 | case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: | |
1103 | cfg80211_chandef_create(&new_chandef, new_chandef.chan, | |
1104 | NL80211_CHAN_HT40PLUS); | |
1105 | break; | |
1106 | case IEEE80211_HT_PARAM_CHA_SEC_BELOW: | |
1107 | cfg80211_chandef_create(&new_chandef, new_chandef.chan, | |
1108 | NL80211_CHAN_HT40MINUS); | |
1109 | break; | |
1110 | case -1: | |
1111 | cfg80211_chandef_create(&new_chandef, new_chandef.chan, | |
1112 | NL80211_CHAN_NO_HT); | |
1113 | break; | |
1114 | } | |
1115 | ||
1116 | if (!cfg80211_chandef_usable(local->hw.wiphy, &new_chandef, | |
1117 | IEEE80211_CHAN_DISABLED)) { | |
1118 | sdata_info(sdata, | |
1119 | "AP %pM switches to unsupported channel (%d MHz, width:%d, CF1/2: %d/%d MHz), disconnecting\n", | |
1120 | ifmgd->associated->bssid, new_freq, | |
1121 | new_chandef.width, new_chandef.center_freq1, | |
1122 | new_chandef.center_freq2); | |
1123 | ieee80211_queue_work(&local->hw, | |
1124 | &ifmgd->csa_connection_drop_work); | |
1125 | return; | |
1126 | } | |
1127 | ||
57eebdf3 JB |
1128 | ifmgd->flags |= IEEE80211_STA_CSA_RECEIVED; |
1129 | ||
b4f286a1 | 1130 | if (local->use_chanctx) { |
55de908a JB |
1131 | sdata_info(sdata, |
1132 | "not handling channel switch with channel contexts\n"); | |
b4f286a1 | 1133 | ieee80211_queue_work(&local->hw, |
55de908a | 1134 | &ifmgd->csa_connection_drop_work); |
246dc3fd | 1135 | return; |
55de908a JB |
1136 | } |
1137 | ||
b4f286a1 | 1138 | mutex_lock(&local->chanctx_mtx); |
55de908a | 1139 | if (WARN_ON(!rcu_access_pointer(sdata->vif.chanctx_conf))) { |
b4f286a1 | 1140 | mutex_unlock(&local->chanctx_mtx); |
55de908a JB |
1141 | return; |
1142 | } | |
1143 | chanctx = container_of(rcu_access_pointer(sdata->vif.chanctx_conf), | |
1144 | struct ieee80211_chanctx, conf); | |
1145 | if (chanctx->refcount > 1) { | |
1146 | sdata_info(sdata, | |
1147 | "channel switch with multiple interfaces on the same channel, disconnecting\n"); | |
b4f286a1 | 1148 | ieee80211_queue_work(&local->hw, |
55de908a | 1149 | &ifmgd->csa_connection_drop_work); |
b4f286a1 | 1150 | mutex_unlock(&local->chanctx_mtx); |
55de908a JB |
1151 | return; |
1152 | } | |
b4f286a1 | 1153 | mutex_unlock(&local->chanctx_mtx); |
55de908a | 1154 | |
85220d71 | 1155 | local->csa_chandef = new_chandef; |
55de908a | 1156 | |
b4f286a1 JB |
1157 | if (mode) |
1158 | ieee80211_stop_queues_by_reason(&local->hw, | |
445ea4e8 | 1159 | IEEE80211_MAX_QUEUE_MAP, |
57eebdf3 JB |
1160 | IEEE80211_QUEUE_STOP_REASON_CSA); |
1161 | ||
b4f286a1 | 1162 | if (local->ops->channel_switch) { |
5ce6e438 | 1163 | /* use driver's channel switch callback */ |
57eebdf3 JB |
1164 | struct ieee80211_channel_switch ch_switch = { |
1165 | .timestamp = timestamp, | |
b4f286a1 | 1166 | .block_tx = mode, |
85220d71 | 1167 | .chandef = new_chandef, |
b4f286a1 | 1168 | .count = count, |
57eebdf3 JB |
1169 | }; |
1170 | ||
b4f286a1 | 1171 | drv_channel_switch(local, &ch_switch); |
5ce6e438 JB |
1172 | return; |
1173 | } | |
1174 | ||
1175 | /* channel switch handled in software */ | |
b4f286a1 JB |
1176 | if (count <= 1) |
1177 | ieee80211_queue_work(&local->hw, &ifmgd->chswitch_work); | |
57eebdf3 | 1178 | else |
cc32abd4 | 1179 | mod_timer(&ifmgd->chswitch_timer, |
b4f286a1 | 1180 | TU_TO_EXP_TIME(count * cbss->beacon_interval)); |
cc32abd4 JB |
1181 | } |
1182 | ||
1ea6f9c0 JB |
1183 | static u32 ieee80211_handle_pwr_constr(struct ieee80211_sub_if_data *sdata, |
1184 | struct ieee80211_channel *channel, | |
1185 | const u8 *country_ie, u8 country_ie_len, | |
1186 | const u8 *pwr_constr_elem) | |
cc32abd4 | 1187 | { |
04b7b2ff JB |
1188 | struct ieee80211_country_ie_triplet *triplet; |
1189 | int chan = ieee80211_frequency_to_channel(channel->center_freq); | |
1190 | int i, chan_pwr, chan_increment, new_ap_level; | |
1191 | bool have_chan_pwr = false; | |
cc32abd4 | 1192 | |
04b7b2ff JB |
1193 | /* Invalid IE */ |
1194 | if (country_ie_len % 2 || country_ie_len < IEEE80211_COUNTRY_IE_MIN_LEN) | |
1ea6f9c0 | 1195 | return 0; |
cc32abd4 | 1196 | |
04b7b2ff JB |
1197 | triplet = (void *)(country_ie + 3); |
1198 | country_ie_len -= 3; | |
1199 | ||
1200 | switch (channel->band) { | |
1201 | default: | |
1202 | WARN_ON_ONCE(1); | |
1203 | /* fall through */ | |
1204 | case IEEE80211_BAND_2GHZ: | |
1205 | case IEEE80211_BAND_60GHZ: | |
1206 | chan_increment = 1; | |
1207 | break; | |
1208 | case IEEE80211_BAND_5GHZ: | |
1209 | chan_increment = 4; | |
1210 | break; | |
cc32abd4 | 1211 | } |
04b7b2ff JB |
1212 | |
1213 | /* find channel */ | |
1214 | while (country_ie_len >= 3) { | |
1215 | u8 first_channel = triplet->chans.first_channel; | |
1216 | ||
1217 | if (first_channel >= IEEE80211_COUNTRY_EXTENSION_ID) | |
1218 | goto next; | |
1219 | ||
1220 | for (i = 0; i < triplet->chans.num_channels; i++) { | |
1221 | if (first_channel + i * chan_increment == chan) { | |
1222 | have_chan_pwr = true; | |
1223 | chan_pwr = triplet->chans.max_power; | |
1224 | break; | |
1225 | } | |
1226 | } | |
1227 | if (have_chan_pwr) | |
1228 | break; | |
1229 | ||
1230 | next: | |
1231 | triplet++; | |
1232 | country_ie_len -= 3; | |
1233 | } | |
1234 | ||
1235 | if (!have_chan_pwr) | |
1ea6f9c0 | 1236 | return 0; |
04b7b2ff JB |
1237 | |
1238 | new_ap_level = max_t(int, 0, chan_pwr - *pwr_constr_elem); | |
1239 | ||
1ea6f9c0 JB |
1240 | if (sdata->ap_power_level == new_ap_level) |
1241 | return 0; | |
04b7b2ff JB |
1242 | |
1243 | sdata_info(sdata, | |
1244 | "Limiting TX power to %d (%d - %d) dBm as advertised by %pM\n", | |
1245 | new_ap_level, chan_pwr, *pwr_constr_elem, | |
1246 | sdata->u.mgd.bssid); | |
1ea6f9c0 JB |
1247 | sdata->ap_power_level = new_ap_level; |
1248 | if (__ieee80211_recalc_txpower(sdata)) | |
1249 | return BSS_CHANGED_TXPOWER; | |
1250 | return 0; | |
cc32abd4 JB |
1251 | } |
1252 | ||
965bedad JB |
1253 | /* powersave */ |
1254 | static void ieee80211_enable_ps(struct ieee80211_local *local, | |
1255 | struct ieee80211_sub_if_data *sdata) | |
1256 | { | |
1257 | struct ieee80211_conf *conf = &local->hw.conf; | |
1258 | ||
d5edaedc JB |
1259 | /* |
1260 | * If we are scanning right now then the parameters will | |
1261 | * take effect when scan finishes. | |
1262 | */ | |
fbe9c429 | 1263 | if (local->scanning) |
d5edaedc JB |
1264 | return; |
1265 | ||
965bedad JB |
1266 | if (conf->dynamic_ps_timeout > 0 && |
1267 | !(local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)) { | |
1268 | mod_timer(&local->dynamic_ps_timer, jiffies + | |
1269 | msecs_to_jiffies(conf->dynamic_ps_timeout)); | |
1270 | } else { | |
1271 | if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) | |
1272 | ieee80211_send_nullfunc(local, sdata, 1); | |
375177bf | 1273 | |
2a13052f JO |
1274 | if ((local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) && |
1275 | (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)) | |
1276 | return; | |
1277 | ||
1278 | conf->flags |= IEEE80211_CONF_PS; | |
1279 | ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); | |
965bedad JB |
1280 | } |
1281 | } | |
1282 | ||
1283 | static void ieee80211_change_ps(struct ieee80211_local *local) | |
1284 | { | |
1285 | struct ieee80211_conf *conf = &local->hw.conf; | |
1286 | ||
1287 | if (local->ps_sdata) { | |
965bedad JB |
1288 | ieee80211_enable_ps(local, local->ps_sdata); |
1289 | } else if (conf->flags & IEEE80211_CONF_PS) { | |
1290 | conf->flags &= ~IEEE80211_CONF_PS; | |
1291 | ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); | |
1292 | del_timer_sync(&local->dynamic_ps_timer); | |
1293 | cancel_work_sync(&local->dynamic_ps_enable_work); | |
1294 | } | |
1295 | } | |
1296 | ||
808118cb JY |
1297 | static bool ieee80211_powersave_allowed(struct ieee80211_sub_if_data *sdata) |
1298 | { | |
1299 | struct ieee80211_if_managed *mgd = &sdata->u.mgd; | |
1300 | struct sta_info *sta = NULL; | |
c2c98fde | 1301 | bool authorized = false; |
808118cb JY |
1302 | |
1303 | if (!mgd->powersave) | |
1304 | return false; | |
1305 | ||
05cb9108 JB |
1306 | if (mgd->broken_ap) |
1307 | return false; | |
1308 | ||
808118cb JY |
1309 | if (!mgd->associated) |
1310 | return false; | |
1311 | ||
808118cb JY |
1312 | if (mgd->flags & (IEEE80211_STA_BEACON_POLL | |
1313 | IEEE80211_STA_CONNECTION_POLL)) | |
1314 | return false; | |
1315 | ||
1316 | rcu_read_lock(); | |
1317 | sta = sta_info_get(sdata, mgd->bssid); | |
1318 | if (sta) | |
c2c98fde | 1319 | authorized = test_sta_flag(sta, WLAN_STA_AUTHORIZED); |
808118cb JY |
1320 | rcu_read_unlock(); |
1321 | ||
c2c98fde | 1322 | return authorized; |
808118cb JY |
1323 | } |
1324 | ||
965bedad | 1325 | /* need to hold RTNL or interface lock */ |
10f644a4 | 1326 | void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency) |
965bedad JB |
1327 | { |
1328 | struct ieee80211_sub_if_data *sdata, *found = NULL; | |
1329 | int count = 0; | |
195e294d | 1330 | int timeout; |
965bedad JB |
1331 | |
1332 | if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS)) { | |
1333 | local->ps_sdata = NULL; | |
1334 | return; | |
1335 | } | |
1336 | ||
1337 | list_for_each_entry(sdata, &local->interfaces, list) { | |
9607e6b6 | 1338 | if (!ieee80211_sdata_running(sdata)) |
965bedad | 1339 | continue; |
8c7914de RM |
1340 | if (sdata->vif.type == NL80211_IFTYPE_AP) { |
1341 | /* If an AP vif is found, then disable PS | |
1342 | * by setting the count to zero thereby setting | |
1343 | * ps_sdata to NULL. | |
1344 | */ | |
1345 | count = 0; | |
1346 | break; | |
1347 | } | |
965bedad JB |
1348 | if (sdata->vif.type != NL80211_IFTYPE_STATION) |
1349 | continue; | |
1350 | found = sdata; | |
1351 | count++; | |
1352 | } | |
1353 | ||
808118cb | 1354 | if (count == 1 && ieee80211_powersave_allowed(found)) { |
10f644a4 JB |
1355 | s32 beaconint_us; |
1356 | ||
1357 | if (latency < 0) | |
ed77134b | 1358 | latency = pm_qos_request(PM_QOS_NETWORK_LATENCY); |
10f644a4 JB |
1359 | |
1360 | beaconint_us = ieee80211_tu_to_usec( | |
1361 | found->vif.bss_conf.beacon_int); | |
1362 | ||
ff616381 | 1363 | timeout = local->dynamic_ps_forced_timeout; |
195e294d JO |
1364 | if (timeout < 0) { |
1365 | /* | |
ff616381 JO |
1366 | * Go to full PSM if the user configures a very low |
1367 | * latency requirement. | |
0ab82b04 EP |
1368 | * The 2000 second value is there for compatibility |
1369 | * until the PM_QOS_NETWORK_LATENCY is configured | |
1370 | * with real values. | |
195e294d | 1371 | */ |
0ab82b04 EP |
1372 | if (latency > (1900 * USEC_PER_MSEC) && |
1373 | latency != (2000 * USEC_PER_SEC)) | |
195e294d | 1374 | timeout = 0; |
ff616381 JO |
1375 | else |
1376 | timeout = 100; | |
195e294d | 1377 | } |
09b85568 | 1378 | local->hw.conf.dynamic_ps_timeout = timeout; |
195e294d | 1379 | |
04fe2037 | 1380 | if (beaconint_us > latency) { |
10f644a4 | 1381 | local->ps_sdata = NULL; |
04fe2037 | 1382 | } else { |
04fe2037 | 1383 | int maxslp = 1; |
826262c3 | 1384 | u8 dtimper = found->u.mgd.dtim_period; |
56007a02 JB |
1385 | |
1386 | /* If the TIM IE is invalid, pretend the value is 1 */ | |
1387 | if (!dtimper) | |
1388 | dtimper = 1; | |
1389 | else if (dtimper > 1) | |
04fe2037 JB |
1390 | maxslp = min_t(int, dtimper, |
1391 | latency / beaconint_us); | |
1392 | ||
9ccebe61 | 1393 | local->hw.conf.max_sleep_period = maxslp; |
56007a02 | 1394 | local->hw.conf.ps_dtim_period = dtimper; |
10f644a4 | 1395 | local->ps_sdata = found; |
04fe2037 | 1396 | } |
10f644a4 | 1397 | } else { |
965bedad | 1398 | local->ps_sdata = NULL; |
10f644a4 | 1399 | } |
965bedad JB |
1400 | |
1401 | ieee80211_change_ps(local); | |
1402 | } | |
1403 | ||
ab095877 EP |
1404 | void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata) |
1405 | { | |
1406 | bool ps_allowed = ieee80211_powersave_allowed(sdata); | |
1407 | ||
1408 | if (sdata->vif.bss_conf.ps != ps_allowed) { | |
1409 | sdata->vif.bss_conf.ps = ps_allowed; | |
1410 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_PS); | |
1411 | } | |
1412 | } | |
1413 | ||
965bedad JB |
1414 | void ieee80211_dynamic_ps_disable_work(struct work_struct *work) |
1415 | { | |
1416 | struct ieee80211_local *local = | |
1417 | container_of(work, struct ieee80211_local, | |
1418 | dynamic_ps_disable_work); | |
1419 | ||
1420 | if (local->hw.conf.flags & IEEE80211_CONF_PS) { | |
1421 | local->hw.conf.flags &= ~IEEE80211_CONF_PS; | |
1422 | ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); | |
1423 | } | |
1424 | ||
1425 | ieee80211_wake_queues_by_reason(&local->hw, | |
445ea4e8 | 1426 | IEEE80211_MAX_QUEUE_MAP, |
965bedad JB |
1427 | IEEE80211_QUEUE_STOP_REASON_PS); |
1428 | } | |
1429 | ||
1430 | void ieee80211_dynamic_ps_enable_work(struct work_struct *work) | |
1431 | { | |
1432 | struct ieee80211_local *local = | |
1433 | container_of(work, struct ieee80211_local, | |
1434 | dynamic_ps_enable_work); | |
1435 | struct ieee80211_sub_if_data *sdata = local->ps_sdata; | |
5e34069c | 1436 | struct ieee80211_if_managed *ifmgd; |
1ddc2867 RM |
1437 | unsigned long flags; |
1438 | int q; | |
965bedad JB |
1439 | |
1440 | /* can only happen when PS was just disabled anyway */ | |
1441 | if (!sdata) | |
1442 | return; | |
1443 | ||
5e34069c CL |
1444 | ifmgd = &sdata->u.mgd; |
1445 | ||
965bedad JB |
1446 | if (local->hw.conf.flags & IEEE80211_CONF_PS) |
1447 | return; | |
1448 | ||
09b85568 | 1449 | if (local->hw.conf.dynamic_ps_timeout > 0) { |
77b7023a AN |
1450 | /* don't enter PS if TX frames are pending */ |
1451 | if (drv_tx_frames_pending(local)) { | |
1ddc2867 RM |
1452 | mod_timer(&local->dynamic_ps_timer, jiffies + |
1453 | msecs_to_jiffies( | |
1454 | local->hw.conf.dynamic_ps_timeout)); | |
1455 | return; | |
1456 | } | |
77b7023a AN |
1457 | |
1458 | /* | |
1459 | * transmission can be stopped by others which leads to | |
1460 | * dynamic_ps_timer expiry. Postpone the ps timer if it | |
1461 | * is not the actual idle state. | |
1462 | */ | |
1463 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); | |
1464 | for (q = 0; q < local->hw.queues; q++) { | |
1465 | if (local->queue_stop_reasons[q]) { | |
1466 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, | |
1467 | flags); | |
1468 | mod_timer(&local->dynamic_ps_timer, jiffies + | |
1469 | msecs_to_jiffies( | |
1470 | local->hw.conf.dynamic_ps_timeout)); | |
1471 | return; | |
1472 | } | |
1473 | } | |
1474 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
1ddc2867 | 1475 | } |
1ddc2867 | 1476 | |
375177bf | 1477 | if ((local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) && |
9c38a8b4 | 1478 | !(ifmgd->flags & IEEE80211_STA_NULLFUNC_ACKED)) { |
a1598383 | 1479 | if (drv_tx_frames_pending(local)) { |
e8306f98 VN |
1480 | mod_timer(&local->dynamic_ps_timer, jiffies + |
1481 | msecs_to_jiffies( | |
1482 | local->hw.conf.dynamic_ps_timeout)); | |
a1598383 | 1483 | } else { |
e8306f98 VN |
1484 | ieee80211_send_nullfunc(local, sdata, 1); |
1485 | /* Flush to get the tx status of nullfunc frame */ | |
39ecc01d | 1486 | ieee80211_flush_queues(local, sdata); |
e8306f98 | 1487 | } |
f3e85b9e VN |
1488 | } |
1489 | ||
2a13052f JO |
1490 | if (!((local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) && |
1491 | (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK)) || | |
375177bf VN |
1492 | (ifmgd->flags & IEEE80211_STA_NULLFUNC_ACKED)) { |
1493 | ifmgd->flags &= ~IEEE80211_STA_NULLFUNC_ACKED; | |
1494 | local->hw.conf.flags |= IEEE80211_CONF_PS; | |
1495 | ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); | |
1496 | } | |
965bedad JB |
1497 | } |
1498 | ||
1499 | void ieee80211_dynamic_ps_timer(unsigned long data) | |
1500 | { | |
1501 | struct ieee80211_local *local = (void *) data; | |
1502 | ||
78f1a8b7 | 1503 | if (local->quiescing || local->suspended) |
5bb644a0 JB |
1504 | return; |
1505 | ||
42935eca | 1506 | ieee80211_queue_work(&local->hw, &local->dynamic_ps_enable_work); |
965bedad JB |
1507 | } |
1508 | ||
164eb02d SW |
1509 | void ieee80211_dfs_cac_timer_work(struct work_struct *work) |
1510 | { | |
1511 | struct delayed_work *delayed_work = | |
1512 | container_of(work, struct delayed_work, work); | |
1513 | struct ieee80211_sub_if_data *sdata = | |
1514 | container_of(delayed_work, struct ieee80211_sub_if_data, | |
1515 | dfs_cac_timer_work); | |
1516 | ||
1517 | ieee80211_vif_release_channel(sdata); | |
1518 | ||
1519 | cfg80211_cac_event(sdata->dev, NL80211_RADAR_CAC_FINISHED, GFP_KERNEL); | |
1520 | } | |
1521 | ||
60f8b39c | 1522 | /* MLME */ |
7d25745d | 1523 | static bool ieee80211_sta_wmm_params(struct ieee80211_local *local, |
4ced3f74 | 1524 | struct ieee80211_sub_if_data *sdata, |
4a3cb702 | 1525 | const u8 *wmm_param, size_t wmm_param_len) |
f0706e82 | 1526 | { |
f0706e82 | 1527 | struct ieee80211_tx_queue_params params; |
4ced3f74 | 1528 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
f0706e82 JB |
1529 | size_t left; |
1530 | int count; | |
4a3cb702 JB |
1531 | const u8 *pos; |
1532 | u8 uapsd_queues = 0; | |
f0706e82 | 1533 | |
e1b3ec1a | 1534 | if (!local->ops->conf_tx) |
7d25745d | 1535 | return false; |
e1b3ec1a | 1536 | |
32c5057b | 1537 | if (local->hw.queues < IEEE80211_NUM_ACS) |
7d25745d | 1538 | return false; |
3434fbd3 JB |
1539 | |
1540 | if (!wmm_param) | |
7d25745d | 1541 | return false; |
3434fbd3 | 1542 | |
f0706e82 | 1543 | if (wmm_param_len < 8 || wmm_param[5] /* version */ != 1) |
7d25745d | 1544 | return false; |
ab13315a KV |
1545 | |
1546 | if (ifmgd->flags & IEEE80211_STA_UAPSD_ENABLED) | |
dc41e4d4 | 1547 | uapsd_queues = ifmgd->uapsd_queues; |
ab13315a | 1548 | |
f0706e82 | 1549 | count = wmm_param[6] & 0x0f; |
46900298 | 1550 | if (count == ifmgd->wmm_last_param_set) |
7d25745d | 1551 | return false; |
46900298 | 1552 | ifmgd->wmm_last_param_set = count; |
f0706e82 JB |
1553 | |
1554 | pos = wmm_param + 8; | |
1555 | left = wmm_param_len - 8; | |
1556 | ||
1557 | memset(¶ms, 0, sizeof(params)); | |
1558 | ||
00e96dec | 1559 | sdata->wmm_acm = 0; |
f0706e82 JB |
1560 | for (; left >= 4; left -= 4, pos += 4) { |
1561 | int aci = (pos[0] >> 5) & 0x03; | |
1562 | int acm = (pos[0] >> 4) & 0x01; | |
ab13315a | 1563 | bool uapsd = false; |
f0706e82 JB |
1564 | int queue; |
1565 | ||
1566 | switch (aci) { | |
0eeb59fe | 1567 | case 1: /* AC_BK */ |
e100bb64 | 1568 | queue = 3; |
988c0f72 | 1569 | if (acm) |
00e96dec | 1570 | sdata->wmm_acm |= BIT(1) | BIT(2); /* BK/- */ |
ab13315a KV |
1571 | if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BK) |
1572 | uapsd = true; | |
f0706e82 | 1573 | break; |
0eeb59fe | 1574 | case 2: /* AC_VI */ |
e100bb64 | 1575 | queue = 1; |
988c0f72 | 1576 | if (acm) |
00e96dec | 1577 | sdata->wmm_acm |= BIT(4) | BIT(5); /* CL/VI */ |
ab13315a KV |
1578 | if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VI) |
1579 | uapsd = true; | |
f0706e82 | 1580 | break; |
0eeb59fe | 1581 | case 3: /* AC_VO */ |
e100bb64 | 1582 | queue = 0; |
988c0f72 | 1583 | if (acm) |
00e96dec | 1584 | sdata->wmm_acm |= BIT(6) | BIT(7); /* VO/NC */ |
ab13315a KV |
1585 | if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VO) |
1586 | uapsd = true; | |
f0706e82 | 1587 | break; |
0eeb59fe | 1588 | case 0: /* AC_BE */ |
f0706e82 | 1589 | default: |
e100bb64 | 1590 | queue = 2; |
988c0f72 | 1591 | if (acm) |
00e96dec | 1592 | sdata->wmm_acm |= BIT(0) | BIT(3); /* BE/EE */ |
ab13315a KV |
1593 | if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BE) |
1594 | uapsd = true; | |
f0706e82 JB |
1595 | break; |
1596 | } | |
1597 | ||
1598 | params.aifs = pos[0] & 0x0f; | |
1599 | params.cw_max = ecw2cw((pos[1] & 0xf0) >> 4); | |
1600 | params.cw_min = ecw2cw(pos[1] & 0x0f); | |
f434b2d1 | 1601 | params.txop = get_unaligned_le16(pos + 2); |
ab13315a KV |
1602 | params.uapsd = uapsd; |
1603 | ||
bdcbd8e0 JB |
1604 | mlme_dbg(sdata, |
1605 | "WMM queue=%d aci=%d acm=%d aifs=%d cWmin=%d cWmax=%d txop=%d uapsd=%d\n", | |
1606 | queue, aci, acm, | |
1607 | params.aifs, params.cw_min, params.cw_max, | |
1608 | params.txop, params.uapsd); | |
f6f3def3 EP |
1609 | sdata->tx_conf[queue] = params; |
1610 | if (drv_conf_tx(local, sdata, queue, ¶ms)) | |
bdcbd8e0 JB |
1611 | sdata_err(sdata, |
1612 | "failed to set TX queue parameters for queue %d\n", | |
1613 | queue); | |
f0706e82 | 1614 | } |
e1b3ec1a SG |
1615 | |
1616 | /* enable WMM or activate new settings */ | |
4ced3f74 | 1617 | sdata->vif.bss_conf.qos = true; |
7d25745d | 1618 | return true; |
f0706e82 JB |
1619 | } |
1620 | ||
925e64c3 SG |
1621 | static void __ieee80211_stop_poll(struct ieee80211_sub_if_data *sdata) |
1622 | { | |
1623 | lockdep_assert_held(&sdata->local->mtx); | |
1624 | ||
1625 | sdata->u.mgd.flags &= ~(IEEE80211_STA_CONNECTION_POLL | | |
1626 | IEEE80211_STA_BEACON_POLL); | |
1627 | ieee80211_run_deferred_scan(sdata->local); | |
1628 | } | |
1629 | ||
1630 | static void ieee80211_stop_poll(struct ieee80211_sub_if_data *sdata) | |
1631 | { | |
1632 | mutex_lock(&sdata->local->mtx); | |
1633 | __ieee80211_stop_poll(sdata); | |
1634 | mutex_unlock(&sdata->local->mtx); | |
1635 | } | |
1636 | ||
7a5158ef JB |
1637 | static u32 ieee80211_handle_bss_capability(struct ieee80211_sub_if_data *sdata, |
1638 | u16 capab, bool erp_valid, u8 erp) | |
5628221c | 1639 | { |
bda3933a | 1640 | struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf; |
471b3efd | 1641 | u32 changed = 0; |
7a5158ef JB |
1642 | bool use_protection; |
1643 | bool use_short_preamble; | |
1644 | bool use_short_slot; | |
1645 | ||
1646 | if (erp_valid) { | |
1647 | use_protection = (erp & WLAN_ERP_USE_PROTECTION) != 0; | |
1648 | use_short_preamble = (erp & WLAN_ERP_BARKER_PREAMBLE) == 0; | |
1649 | } else { | |
1650 | use_protection = false; | |
1651 | use_short_preamble = !!(capab & WLAN_CAPABILITY_SHORT_PREAMBLE); | |
1652 | } | |
1653 | ||
1654 | use_short_slot = !!(capab & WLAN_CAPABILITY_SHORT_SLOT_TIME); | |
55de908a | 1655 | if (ieee80211_get_sdata_band(sdata) == IEEE80211_BAND_5GHZ) |
43d35343 | 1656 | use_short_slot = true; |
5628221c | 1657 | |
471b3efd | 1658 | if (use_protection != bss_conf->use_cts_prot) { |
471b3efd JB |
1659 | bss_conf->use_cts_prot = use_protection; |
1660 | changed |= BSS_CHANGED_ERP_CTS_PROT; | |
5628221c | 1661 | } |
7e9ed188 | 1662 | |
d43c7b37 | 1663 | if (use_short_preamble != bss_conf->use_short_preamble) { |
d43c7b37 | 1664 | bss_conf->use_short_preamble = use_short_preamble; |
471b3efd | 1665 | changed |= BSS_CHANGED_ERP_PREAMBLE; |
7e9ed188 | 1666 | } |
d9430a32 | 1667 | |
7a5158ef | 1668 | if (use_short_slot != bss_conf->use_short_slot) { |
7a5158ef JB |
1669 | bss_conf->use_short_slot = use_short_slot; |
1670 | changed |= BSS_CHANGED_ERP_SLOT; | |
50c4afb9 JL |
1671 | } |
1672 | ||
1673 | return changed; | |
1674 | } | |
1675 | ||
f698d856 | 1676 | static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata, |
0c1ad2ca | 1677 | struct cfg80211_bss *cbss, |
ae5eb026 | 1678 | u32 bss_info_changed) |
f0706e82 | 1679 | { |
0c1ad2ca | 1680 | struct ieee80211_bss *bss = (void *)cbss->priv; |
471b3efd | 1681 | struct ieee80211_local *local = sdata->local; |
68542962 | 1682 | struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf; |
d6f2da5b | 1683 | |
ae5eb026 | 1684 | bss_info_changed |= BSS_CHANGED_ASSOC; |
77fdaa12 | 1685 | bss_info_changed |= ieee80211_handle_bss_capability(sdata, |
50ae34a2 | 1686 | bss_conf->assoc_capability, bss->has_erp_value, bss->erp_value); |
21c0cbe7 | 1687 | |
7ccc8bd7 | 1688 | sdata->u.mgd.beacon_timeout = usecs_to_jiffies(ieee80211_tu_to_usec( |
59c1ec2b | 1689 | beacon_loss_count * bss_conf->beacon_int)); |
7ccc8bd7 | 1690 | |
0c1ad2ca JB |
1691 | sdata->u.mgd.associated = cbss; |
1692 | memcpy(sdata->u.mgd.bssid, cbss->bssid, ETH_ALEN); | |
f0706e82 | 1693 | |
17e4ec14 JM |
1694 | sdata->u.mgd.flags |= IEEE80211_STA_RESET_SIGNAL_AVE; |
1695 | ||
488dd7b5 | 1696 | if (sdata->vif.p2p) { |
9caf0364 | 1697 | const struct cfg80211_bss_ies *ies; |
488dd7b5 | 1698 | |
9caf0364 JB |
1699 | rcu_read_lock(); |
1700 | ies = rcu_dereference(cbss->ies); | |
1701 | if (ies) { | |
9caf0364 JB |
1702 | int ret; |
1703 | ||
1704 | ret = cfg80211_get_p2p_attr( | |
1705 | ies->data, ies->len, | |
1706 | IEEE80211_P2P_ATTR_ABSENCE_NOTICE, | |
67baf663 JD |
1707 | (u8 *) &bss_conf->p2p_noa_attr, |
1708 | sizeof(bss_conf->p2p_noa_attr)); | |
9caf0364 | 1709 | if (ret >= 2) { |
67baf663 JD |
1710 | sdata->u.mgd.p2p_noa_index = |
1711 | bss_conf->p2p_noa_attr.index; | |
9caf0364 | 1712 | bss_info_changed |= BSS_CHANGED_P2P_PS; |
9caf0364 | 1713 | } |
488dd7b5 | 1714 | } |
9caf0364 | 1715 | rcu_read_unlock(); |
488dd7b5 JB |
1716 | } |
1717 | ||
b291ba11 | 1718 | /* just to be sure */ |
925e64c3 | 1719 | ieee80211_stop_poll(sdata); |
b291ba11 | 1720 | |
9ac19a90 | 1721 | ieee80211_led_assoc(local, 1); |
9306102e | 1722 | |
c65dd147 | 1723 | if (sdata->u.mgd.assoc_data->have_beacon) { |
826262c3 JB |
1724 | /* |
1725 | * If the AP is buggy we may get here with no DTIM period | |
1726 | * known, so assume it's 1 which is the only safe assumption | |
1727 | * in that case, although if the TIM IE is broken powersave | |
1728 | * probably just won't work at all. | |
1729 | */ | |
1730 | bss_conf->dtim_period = sdata->u.mgd.dtim_period ?: 1; | |
c65dd147 | 1731 | bss_info_changed |= BSS_CHANGED_DTIM_PERIOD; |
826262c3 | 1732 | } else { |
e5b900d2 | 1733 | bss_conf->dtim_period = 0; |
826262c3 | 1734 | } |
e5b900d2 | 1735 | |
68542962 | 1736 | bss_conf->assoc = 1; |
9cef8737 | 1737 | |
a97c13c3 | 1738 | /* Tell the driver to monitor connection quality (if supported) */ |
ea086359 | 1739 | if (sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI && |
68542962 | 1740 | bss_conf->cqm_rssi_thold) |
a97c13c3 JO |
1741 | bss_info_changed |= BSS_CHANGED_CQM; |
1742 | ||
68542962 | 1743 | /* Enable ARP filtering */ |
0f19b41e | 1744 | if (bss_conf->arp_addr_cnt) |
68542962 | 1745 | bss_info_changed |= BSS_CHANGED_ARP_FILTER; |
68542962 | 1746 | |
ae5eb026 | 1747 | ieee80211_bss_info_change_notify(sdata, bss_info_changed); |
f0706e82 | 1748 | |
056508dc JB |
1749 | mutex_lock(&local->iflist_mtx); |
1750 | ieee80211_recalc_ps(local, -1); | |
1751 | mutex_unlock(&local->iflist_mtx); | |
e0cb686f | 1752 | |
04ecd257 | 1753 | ieee80211_recalc_smps(sdata); |
ab095877 EP |
1754 | ieee80211_recalc_ps_vif(sdata); |
1755 | ||
9ac19a90 | 1756 | netif_carrier_on(sdata->dev); |
f0706e82 JB |
1757 | } |
1758 | ||
e69e95db | 1759 | static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata, |
37ad3888 JB |
1760 | u16 stype, u16 reason, bool tx, |
1761 | u8 *frame_buf) | |
aa458d17 | 1762 | { |
46900298 | 1763 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
aa458d17 | 1764 | struct ieee80211_local *local = sdata->local; |
3cc5240b | 1765 | u32 changed = 0; |
aa458d17 | 1766 | |
77fdaa12 JB |
1767 | ASSERT_MGD_MTX(ifmgd); |
1768 | ||
37ad3888 JB |
1769 | if (WARN_ON_ONCE(tx && !frame_buf)) |
1770 | return; | |
1771 | ||
b291ba11 JB |
1772 | if (WARN_ON(!ifmgd->associated)) |
1773 | return; | |
1774 | ||
79543d8e DS |
1775 | ieee80211_stop_poll(sdata); |
1776 | ||
77fdaa12 | 1777 | ifmgd->associated = NULL; |
aa458d17 TW |
1778 | netif_carrier_off(sdata->dev); |
1779 | ||
88bc40e8 EP |
1780 | /* |
1781 | * if we want to get out of ps before disassoc (why?) we have | |
1782 | * to do it before sending disassoc, as otherwise the null-packet | |
1783 | * won't be valid. | |
1784 | */ | |
1785 | if (local->hw.conf.flags & IEEE80211_CONF_PS) { | |
1786 | local->hw.conf.flags &= ~IEEE80211_CONF_PS; | |
1787 | ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); | |
1788 | } | |
1789 | local->ps_sdata = NULL; | |
1790 | ||
ab095877 EP |
1791 | /* disable per-vif ps */ |
1792 | ieee80211_recalc_ps_vif(sdata); | |
1793 | ||
f823981e EP |
1794 | /* flush out any pending frame (e.g. DELBA) before deauth/disassoc */ |
1795 | if (tx) | |
39ecc01d | 1796 | ieee80211_flush_queues(local, sdata); |
f823981e | 1797 | |
37ad3888 JB |
1798 | /* deauthenticate/disassociate now */ |
1799 | if (tx || frame_buf) | |
88a9e31c EP |
1800 | ieee80211_send_deauth_disassoc(sdata, ifmgd->bssid, stype, |
1801 | reason, tx, frame_buf); | |
37ad3888 JB |
1802 | |
1803 | /* flush out frame */ | |
1804 | if (tx) | |
39ecc01d | 1805 | ieee80211_flush_queues(local, sdata); |
37ad3888 | 1806 | |
88a9e31c EP |
1807 | /* clear bssid only after building the needed mgmt frames */ |
1808 | memset(ifmgd->bssid, 0, ETH_ALEN); | |
1809 | ||
37ad3888 | 1810 | /* remove AP and TDLS peers */ |
051007d9 | 1811 | sta_info_flush_defer(sdata); |
37ad3888 JB |
1812 | |
1813 | /* finally reset all BSS / config parameters */ | |
f5e5bf25 TW |
1814 | changed |= ieee80211_reset_erp_info(sdata); |
1815 | ||
f5e5bf25 | 1816 | ieee80211_led_assoc(local, 0); |
ae5eb026 JB |
1817 | changed |= BSS_CHANGED_ASSOC; |
1818 | sdata->vif.bss_conf.assoc = false; | |
f5e5bf25 | 1819 | |
67baf663 JD |
1820 | ifmgd->p2p_noa_index = -1; |
1821 | memset(&sdata->vif.bss_conf.p2p_noa_attr, 0, | |
1822 | sizeof(sdata->vif.bss_conf.p2p_noa_attr)); | |
488dd7b5 | 1823 | |
dd5ecfea | 1824 | /* on the next assoc, re-program HT/VHT parameters */ |
ef96a842 BG |
1825 | memset(&ifmgd->ht_capa, 0, sizeof(ifmgd->ht_capa)); |
1826 | memset(&ifmgd->ht_capa_mask, 0, sizeof(ifmgd->ht_capa_mask)); | |
dd5ecfea JB |
1827 | memset(&ifmgd->vht_capa, 0, sizeof(ifmgd->vht_capa)); |
1828 | memset(&ifmgd->vht_capa_mask, 0, sizeof(ifmgd->vht_capa_mask)); | |
413ad50a | 1829 | |
1ea6f9c0 | 1830 | sdata->ap_power_level = IEEE80211_UNSET_POWER_LEVEL; |
a8302de9 | 1831 | |
520eb820 KV |
1832 | del_timer_sync(&local->dynamic_ps_timer); |
1833 | cancel_work_sync(&local->dynamic_ps_enable_work); | |
1834 | ||
68542962 | 1835 | /* Disable ARP filtering */ |
0f19b41e | 1836 | if (sdata->vif.bss_conf.arp_addr_cnt) |
68542962 | 1837 | changed |= BSS_CHANGED_ARP_FILTER; |
68542962 | 1838 | |
3abead59 JB |
1839 | sdata->vif.bss_conf.qos = false; |
1840 | changed |= BSS_CHANGED_QOS; | |
1841 | ||
0aaffa9b JB |
1842 | /* The BSSID (not really interesting) and HT changed */ |
1843 | changed |= BSS_CHANGED_BSSID | BSS_CHANGED_HT; | |
ae5eb026 | 1844 | ieee80211_bss_info_change_notify(sdata, changed); |
8e268e47 | 1845 | |
3abead59 JB |
1846 | /* disassociated - set to defaults now */ |
1847 | ieee80211_set_wmm_default(sdata, false); | |
1848 | ||
b9dcf712 JB |
1849 | del_timer_sync(&sdata->u.mgd.conn_mon_timer); |
1850 | del_timer_sync(&sdata->u.mgd.bcn_mon_timer); | |
1851 | del_timer_sync(&sdata->u.mgd.timer); | |
1852 | del_timer_sync(&sdata->u.mgd.chswitch_timer); | |
2d9957cc | 1853 | |
826262c3 JB |
1854 | sdata->vif.bss_conf.dtim_period = 0; |
1855 | ||
028e8da0 JB |
1856 | ifmgd->flags = 0; |
1857 | ieee80211_vif_release_channel(sdata); | |
aa458d17 | 1858 | } |
f0706e82 | 1859 | |
3cf335d5 KV |
1860 | void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata, |
1861 | struct ieee80211_hdr *hdr) | |
1862 | { | |
1863 | /* | |
1864 | * We can postpone the mgd.timer whenever receiving unicast frames | |
1865 | * from AP because we know that the connection is working both ways | |
1866 | * at that time. But multicast frames (and hence also beacons) must | |
1867 | * be ignored here, because we need to trigger the timer during | |
b291ba11 JB |
1868 | * data idle periods for sending the periodic probe request to the |
1869 | * AP we're connected to. | |
3cf335d5 | 1870 | */ |
b291ba11 JB |
1871 | if (is_multicast_ether_addr(hdr->addr1)) |
1872 | return; | |
1873 | ||
be099e82 | 1874 | ieee80211_sta_reset_conn_monitor(sdata); |
3cf335d5 | 1875 | } |
f0706e82 | 1876 | |
4e5ff376 FF |
1877 | static void ieee80211_reset_ap_probe(struct ieee80211_sub_if_data *sdata) |
1878 | { | |
1879 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
133d40f9 | 1880 | struct ieee80211_local *local = sdata->local; |
4e5ff376 | 1881 | |
133d40f9 | 1882 | mutex_lock(&local->mtx); |
4e5ff376 | 1883 | if (!(ifmgd->flags & (IEEE80211_STA_BEACON_POLL | |
133d40f9 SG |
1884 | IEEE80211_STA_CONNECTION_POLL))) { |
1885 | mutex_unlock(&local->mtx); | |
1886 | return; | |
1887 | } | |
4e5ff376 | 1888 | |
925e64c3 | 1889 | __ieee80211_stop_poll(sdata); |
133d40f9 SG |
1890 | |
1891 | mutex_lock(&local->iflist_mtx); | |
1892 | ieee80211_recalc_ps(local, -1); | |
1893 | mutex_unlock(&local->iflist_mtx); | |
4e5ff376 FF |
1894 | |
1895 | if (sdata->local->hw.flags & IEEE80211_HW_CONNECTION_MONITOR) | |
133d40f9 | 1896 | goto out; |
4e5ff376 FF |
1897 | |
1898 | /* | |
1899 | * We've received a probe response, but are not sure whether | |
1900 | * we have or will be receiving any beacons or data, so let's | |
1901 | * schedule the timers again, just in case. | |
1902 | */ | |
1903 | ieee80211_sta_reset_beacon_monitor(sdata); | |
1904 | ||
1905 | mod_timer(&ifmgd->conn_mon_timer, | |
1906 | round_jiffies_up(jiffies + | |
1907 | IEEE80211_CONNECTION_IDLE_TIME)); | |
133d40f9 | 1908 | out: |
133d40f9 | 1909 | mutex_unlock(&local->mtx); |
4e5ff376 FF |
1910 | } |
1911 | ||
1912 | void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata, | |
04ac3c0e | 1913 | struct ieee80211_hdr *hdr, bool ack) |
4e5ff376 | 1914 | { |
75706d0e | 1915 | if (!ieee80211_is_data(hdr->frame_control)) |
4e5ff376 FF |
1916 | return; |
1917 | ||
4e5ff376 FF |
1918 | if (ieee80211_is_nullfunc(hdr->frame_control) && |
1919 | sdata->u.mgd.probe_send_count > 0) { | |
04ac3c0e | 1920 | if (ack) |
cab1c7fd | 1921 | ieee80211_sta_reset_conn_monitor(sdata); |
04ac3c0e FF |
1922 | else |
1923 | sdata->u.mgd.nullfunc_failed = true; | |
4e5ff376 | 1924 | ieee80211_queue_work(&sdata->local->hw, &sdata->work); |
cab1c7fd | 1925 | return; |
4e5ff376 | 1926 | } |
cab1c7fd WD |
1927 | |
1928 | if (ack) | |
1929 | ieee80211_sta_reset_conn_monitor(sdata); | |
4e5ff376 FF |
1930 | } |
1931 | ||
a43abf29 ML |
1932 | static void ieee80211_mgd_probe_ap_send(struct ieee80211_sub_if_data *sdata) |
1933 | { | |
1934 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
1935 | const u8 *ssid; | |
f01a067d | 1936 | u8 *dst = ifmgd->associated->bssid; |
180205bd | 1937 | u8 unicast_limit = max(1, max_probe_tries - 3); |
f01a067d LR |
1938 | |
1939 | /* | |
1940 | * Try sending broadcast probe requests for the last three | |
1941 | * probe requests after the first ones failed since some | |
1942 | * buggy APs only support broadcast probe requests. | |
1943 | */ | |
1944 | if (ifmgd->probe_send_count >= unicast_limit) | |
1945 | dst = NULL; | |
a43abf29 | 1946 | |
4e5ff376 FF |
1947 | /* |
1948 | * When the hardware reports an accurate Tx ACK status, it's | |
1949 | * better to send a nullfunc frame instead of a probe request, | |
1950 | * as it will kick us off the AP quickly if we aren't associated | |
1951 | * anymore. The timeout will be reset if the frame is ACKed by | |
1952 | * the AP. | |
1953 | */ | |
992e68bf SD |
1954 | ifmgd->probe_send_count++; |
1955 | ||
04ac3c0e FF |
1956 | if (sdata->local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) { |
1957 | ifmgd->nullfunc_failed = false; | |
4e5ff376 | 1958 | ieee80211_send_nullfunc(sdata->local, sdata, 0); |
04ac3c0e | 1959 | } else { |
88c868c4 SG |
1960 | int ssid_len; |
1961 | ||
9caf0364 | 1962 | rcu_read_lock(); |
4e5ff376 | 1963 | ssid = ieee80211_bss_get_ie(ifmgd->associated, WLAN_EID_SSID); |
88c868c4 SG |
1964 | if (WARN_ON_ONCE(ssid == NULL)) |
1965 | ssid_len = 0; | |
1966 | else | |
1967 | ssid_len = ssid[1]; | |
1968 | ||
1969 | ieee80211_send_probe_req(sdata, dst, ssid + 2, ssid_len, NULL, | |
1672c0e3 | 1970 | 0, (u32) -1, true, 0, |
55de908a | 1971 | ifmgd->associated->channel, false); |
9caf0364 | 1972 | rcu_read_unlock(); |
4e5ff376 | 1973 | } |
a43abf29 | 1974 | |
180205bd | 1975 | ifmgd->probe_timeout = jiffies + msecs_to_jiffies(probe_wait_ms); |
a43abf29 | 1976 | run_again(ifmgd, ifmgd->probe_timeout); |
f69b9c79 | 1977 | if (sdata->local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) |
39ecc01d | 1978 | ieee80211_flush_queues(sdata->local, sdata); |
a43abf29 ML |
1979 | } |
1980 | ||
b291ba11 JB |
1981 | static void ieee80211_mgd_probe_ap(struct ieee80211_sub_if_data *sdata, |
1982 | bool beacon) | |
04de8381 | 1983 | { |
04de8381 | 1984 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
b291ba11 | 1985 | bool already = false; |
34bfc411 | 1986 | |
9607e6b6 | 1987 | if (!ieee80211_sdata_running(sdata)) |
0e2b6286 JB |
1988 | return; |
1989 | ||
77fdaa12 JB |
1990 | mutex_lock(&ifmgd->mtx); |
1991 | ||
1992 | if (!ifmgd->associated) | |
1993 | goto out; | |
1994 | ||
133d40f9 SG |
1995 | mutex_lock(&sdata->local->mtx); |
1996 | ||
1997 | if (sdata->local->tmp_channel || sdata->local->scanning) { | |
1998 | mutex_unlock(&sdata->local->mtx); | |
1999 | goto out; | |
2000 | } | |
2001 | ||
a13fbe54 | 2002 | if (beacon) { |
bdcbd8e0 | 2003 | mlme_dbg_ratelimited(sdata, |
59c1ec2b BG |
2004 | "detected beacon loss from AP (missed %d beacons) - probing\n", |
2005 | beacon_loss_count); | |
bdcbd8e0 | 2006 | |
a13fbe54 BG |
2007 | ieee80211_cqm_rssi_notify(&sdata->vif, |
2008 | NL80211_CQM_RSSI_BEACON_LOSS_EVENT, | |
2009 | GFP_KERNEL); | |
2010 | } | |
04de8381 | 2011 | |
b291ba11 JB |
2012 | /* |
2013 | * The driver/our work has already reported this event or the | |
2014 | * connection monitoring has kicked in and we have already sent | |
2015 | * a probe request. Or maybe the AP died and the driver keeps | |
2016 | * reporting until we disassociate... | |
2017 | * | |
2018 | * In either case we have to ignore the current call to this | |
2019 | * function (except for setting the correct probe reason bit) | |
2020 | * because otherwise we would reset the timer every time and | |
2021 | * never check whether we received a probe response! | |
2022 | */ | |
2023 | if (ifmgd->flags & (IEEE80211_STA_BEACON_POLL | | |
2024 | IEEE80211_STA_CONNECTION_POLL)) | |
2025 | already = true; | |
2026 | ||
2027 | if (beacon) | |
2028 | ifmgd->flags |= IEEE80211_STA_BEACON_POLL; | |
2029 | else | |
2030 | ifmgd->flags |= IEEE80211_STA_CONNECTION_POLL; | |
2031 | ||
133d40f9 SG |
2032 | mutex_unlock(&sdata->local->mtx); |
2033 | ||
b291ba11 JB |
2034 | if (already) |
2035 | goto out; | |
2036 | ||
4e751843 JB |
2037 | mutex_lock(&sdata->local->iflist_mtx); |
2038 | ieee80211_recalc_ps(sdata->local, -1); | |
2039 | mutex_unlock(&sdata->local->iflist_mtx); | |
2040 | ||
a43abf29 ML |
2041 | ifmgd->probe_send_count = 0; |
2042 | ieee80211_mgd_probe_ap_send(sdata); | |
77fdaa12 JB |
2043 | out: |
2044 | mutex_unlock(&ifmgd->mtx); | |
04de8381 KV |
2045 | } |
2046 | ||
a619a4c0 JO |
2047 | struct sk_buff *ieee80211_ap_probereq_get(struct ieee80211_hw *hw, |
2048 | struct ieee80211_vif *vif) | |
2049 | { | |
2050 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
2051 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
d9b3b28b | 2052 | struct cfg80211_bss *cbss; |
a619a4c0 JO |
2053 | struct sk_buff *skb; |
2054 | const u8 *ssid; | |
88c868c4 | 2055 | int ssid_len; |
a619a4c0 JO |
2056 | |
2057 | if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION)) | |
2058 | return NULL; | |
2059 | ||
2060 | ASSERT_MGD_MTX(ifmgd); | |
2061 | ||
d9b3b28b EP |
2062 | if (ifmgd->associated) |
2063 | cbss = ifmgd->associated; | |
2064 | else if (ifmgd->auth_data) | |
2065 | cbss = ifmgd->auth_data->bss; | |
2066 | else if (ifmgd->assoc_data) | |
2067 | cbss = ifmgd->assoc_data->bss; | |
2068 | else | |
a619a4c0 JO |
2069 | return NULL; |
2070 | ||
9caf0364 | 2071 | rcu_read_lock(); |
d9b3b28b | 2072 | ssid = ieee80211_bss_get_ie(cbss, WLAN_EID_SSID); |
88c868c4 SG |
2073 | if (WARN_ON_ONCE(ssid == NULL)) |
2074 | ssid_len = 0; | |
2075 | else | |
2076 | ssid_len = ssid[1]; | |
2077 | ||
d9b3b28b | 2078 | skb = ieee80211_build_probe_req(sdata, cbss->bssid, |
55de908a | 2079 | (u32) -1, cbss->channel, |
6b77863b | 2080 | ssid + 2, ssid_len, |
85a237fe | 2081 | NULL, 0, true); |
9caf0364 | 2082 | rcu_read_unlock(); |
a619a4c0 JO |
2083 | |
2084 | return skb; | |
2085 | } | |
2086 | EXPORT_SYMBOL(ieee80211_ap_probereq_get); | |
2087 | ||
eef9e54c | 2088 | static void __ieee80211_disconnect(struct ieee80211_sub_if_data *sdata) |
1e4dcd01 JO |
2089 | { |
2090 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
6ae16775 | 2091 | u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN]; |
1e4dcd01 JO |
2092 | |
2093 | mutex_lock(&ifmgd->mtx); | |
2094 | if (!ifmgd->associated) { | |
2095 | mutex_unlock(&ifmgd->mtx); | |
2096 | return; | |
2097 | } | |
2098 | ||
37ad3888 JB |
2099 | ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, |
2100 | WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, | |
eef9e54c | 2101 | true, frame_buf); |
882a7c69 | 2102 | ifmgd->flags &= ~IEEE80211_STA_CSA_RECEIVED; |
5b36ebd8 | 2103 | ieee80211_wake_queues_by_reason(&sdata->local->hw, |
445ea4e8 | 2104 | IEEE80211_MAX_QUEUE_MAP, |
5b36ebd8 | 2105 | IEEE80211_QUEUE_STOP_REASON_CSA); |
1e4dcd01 | 2106 | mutex_unlock(&ifmgd->mtx); |
7da7cc1d | 2107 | |
1e4dcd01 JO |
2108 | /* |
2109 | * must be outside lock due to cfg80211, | |
2110 | * but that's not a problem. | |
2111 | */ | |
6ae16775 | 2112 | cfg80211_send_deauth(sdata->dev, frame_buf, IEEE80211_DEAUTH_FRAME_LEN); |
1e4dcd01 JO |
2113 | } |
2114 | ||
cc74c0c7 | 2115 | static void ieee80211_beacon_connection_loss_work(struct work_struct *work) |
b291ba11 JB |
2116 | { |
2117 | struct ieee80211_sub_if_data *sdata = | |
2118 | container_of(work, struct ieee80211_sub_if_data, | |
1e4dcd01 | 2119 | u.mgd.beacon_connection_loss_work); |
a85e1d55 PS |
2120 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
2121 | struct sta_info *sta; | |
2122 | ||
2123 | if (ifmgd->associated) { | |
30fa9047 | 2124 | rcu_read_lock(); |
a85e1d55 PS |
2125 | sta = sta_info_get(sdata, ifmgd->bssid); |
2126 | if (sta) | |
2127 | sta->beacon_loss_count++; | |
30fa9047 | 2128 | rcu_read_unlock(); |
a85e1d55 | 2129 | } |
b291ba11 | 2130 | |
682bd38b | 2131 | if (ifmgd->connection_loss) { |
882a7c69 JB |
2132 | sdata_info(sdata, "Connection to AP %pM lost\n", |
2133 | ifmgd->bssid); | |
eef9e54c | 2134 | __ieee80211_disconnect(sdata); |
882a7c69 | 2135 | } else { |
1e4dcd01 | 2136 | ieee80211_mgd_probe_ap(sdata, true); |
882a7c69 JB |
2137 | } |
2138 | } | |
2139 | ||
2140 | static void ieee80211_csa_connection_drop_work(struct work_struct *work) | |
2141 | { | |
2142 | struct ieee80211_sub_if_data *sdata = | |
2143 | container_of(work, struct ieee80211_sub_if_data, | |
2144 | u.mgd.csa_connection_drop_work); | |
2145 | ||
eef9e54c | 2146 | __ieee80211_disconnect(sdata); |
b291ba11 JB |
2147 | } |
2148 | ||
04de8381 KV |
2149 | void ieee80211_beacon_loss(struct ieee80211_vif *vif) |
2150 | { | |
2151 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
1e4dcd01 | 2152 | struct ieee80211_hw *hw = &sdata->local->hw; |
04de8381 | 2153 | |
b5878a2d JB |
2154 | trace_api_beacon_loss(sdata); |
2155 | ||
1e4dcd01 | 2156 | WARN_ON(hw->flags & IEEE80211_HW_CONNECTION_MONITOR); |
682bd38b | 2157 | sdata->u.mgd.connection_loss = false; |
1e4dcd01 | 2158 | ieee80211_queue_work(hw, &sdata->u.mgd.beacon_connection_loss_work); |
04de8381 KV |
2159 | } |
2160 | EXPORT_SYMBOL(ieee80211_beacon_loss); | |
2161 | ||
1e4dcd01 JO |
2162 | void ieee80211_connection_loss(struct ieee80211_vif *vif) |
2163 | { | |
2164 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
2165 | struct ieee80211_hw *hw = &sdata->local->hw; | |
2166 | ||
b5878a2d JB |
2167 | trace_api_connection_loss(sdata); |
2168 | ||
682bd38b | 2169 | sdata->u.mgd.connection_loss = true; |
1e4dcd01 JO |
2170 | ieee80211_queue_work(hw, &sdata->u.mgd.beacon_connection_loss_work); |
2171 | } | |
2172 | EXPORT_SYMBOL(ieee80211_connection_loss); | |
2173 | ||
2174 | ||
66e67e41 JB |
2175 | static void ieee80211_destroy_auth_data(struct ieee80211_sub_if_data *sdata, |
2176 | bool assoc) | |
2177 | { | |
2178 | struct ieee80211_mgd_auth_data *auth_data = sdata->u.mgd.auth_data; | |
2179 | ||
2180 | lockdep_assert_held(&sdata->u.mgd.mtx); | |
2181 | ||
66e67e41 JB |
2182 | if (!assoc) { |
2183 | sta_info_destroy_addr(sdata, auth_data->bss->bssid); | |
2184 | ||
2185 | memset(sdata->u.mgd.bssid, 0, ETH_ALEN); | |
2186 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID); | |
028e8da0 | 2187 | sdata->u.mgd.flags = 0; |
55de908a | 2188 | ieee80211_vif_release_channel(sdata); |
66e67e41 JB |
2189 | } |
2190 | ||
5b112d3d | 2191 | cfg80211_put_bss(sdata->local->hw.wiphy, auth_data->bss); |
66e67e41 JB |
2192 | kfree(auth_data); |
2193 | sdata->u.mgd.auth_data = NULL; | |
2194 | } | |
2195 | ||
2196 | static void ieee80211_auth_challenge(struct ieee80211_sub_if_data *sdata, | |
2197 | struct ieee80211_mgmt *mgmt, size_t len) | |
2198 | { | |
1672c0e3 | 2199 | struct ieee80211_local *local = sdata->local; |
66e67e41 JB |
2200 | struct ieee80211_mgd_auth_data *auth_data = sdata->u.mgd.auth_data; |
2201 | u8 *pos; | |
2202 | struct ieee802_11_elems elems; | |
1672c0e3 | 2203 | u32 tx_flags = 0; |
66e67e41 JB |
2204 | |
2205 | pos = mgmt->u.auth.variable; | |
2206 | ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems); | |
2207 | if (!elems.challenge) | |
2208 | return; | |
2209 | auth_data->expected_transaction = 4; | |
a1845fc7 | 2210 | drv_mgd_prepare_tx(sdata->local, sdata); |
1672c0e3 JB |
2211 | if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) |
2212 | tx_flags = IEEE80211_TX_CTL_REQ_TX_STATUS | | |
2213 | IEEE80211_TX_INTFL_MLME_CONN_TX; | |
700e8ea6 | 2214 | ieee80211_send_auth(sdata, 3, auth_data->algorithm, 0, |
66e67e41 JB |
2215 | elems.challenge - 2, elems.challenge_len + 2, |
2216 | auth_data->bss->bssid, auth_data->bss->bssid, | |
2217 | auth_data->key, auth_data->key_len, | |
1672c0e3 | 2218 | auth_data->key_idx, tx_flags); |
66e67e41 JB |
2219 | } |
2220 | ||
2221 | static enum rx_mgmt_action __must_check | |
2222 | ieee80211_rx_mgmt_auth(struct ieee80211_sub_if_data *sdata, | |
2223 | struct ieee80211_mgmt *mgmt, size_t len) | |
2224 | { | |
2225 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
2226 | u8 bssid[ETH_ALEN]; | |
2227 | u16 auth_alg, auth_transaction, status_code; | |
2228 | struct sta_info *sta; | |
2229 | ||
2230 | lockdep_assert_held(&ifmgd->mtx); | |
2231 | ||
2232 | if (len < 24 + 6) | |
2233 | return RX_MGMT_NONE; | |
2234 | ||
2235 | if (!ifmgd->auth_data || ifmgd->auth_data->done) | |
2236 | return RX_MGMT_NONE; | |
2237 | ||
2238 | memcpy(bssid, ifmgd->auth_data->bss->bssid, ETH_ALEN); | |
2239 | ||
b203ca39 | 2240 | if (!ether_addr_equal(bssid, mgmt->bssid)) |
66e67e41 JB |
2241 | return RX_MGMT_NONE; |
2242 | ||
2243 | auth_alg = le16_to_cpu(mgmt->u.auth.auth_alg); | |
2244 | auth_transaction = le16_to_cpu(mgmt->u.auth.auth_transaction); | |
2245 | status_code = le16_to_cpu(mgmt->u.auth.status_code); | |
2246 | ||
2247 | if (auth_alg != ifmgd->auth_data->algorithm || | |
0f4126e8 JM |
2248 | auth_transaction != ifmgd->auth_data->expected_transaction) { |
2249 | sdata_info(sdata, "%pM unexpected authentication state: alg %d (expected %d) transact %d (expected %d)\n", | |
2250 | mgmt->sa, auth_alg, ifmgd->auth_data->algorithm, | |
2251 | auth_transaction, | |
2252 | ifmgd->auth_data->expected_transaction); | |
66e67e41 | 2253 | return RX_MGMT_NONE; |
0f4126e8 | 2254 | } |
66e67e41 JB |
2255 | |
2256 | if (status_code != WLAN_STATUS_SUCCESS) { | |
bdcbd8e0 JB |
2257 | sdata_info(sdata, "%pM denied authentication (status %d)\n", |
2258 | mgmt->sa, status_code); | |
dac211ec EP |
2259 | ieee80211_destroy_auth_data(sdata, false); |
2260 | return RX_MGMT_CFG80211_RX_AUTH; | |
66e67e41 JB |
2261 | } |
2262 | ||
2263 | switch (ifmgd->auth_data->algorithm) { | |
2264 | case WLAN_AUTH_OPEN: | |
2265 | case WLAN_AUTH_LEAP: | |
2266 | case WLAN_AUTH_FT: | |
6b8ece3a | 2267 | case WLAN_AUTH_SAE: |
66e67e41 JB |
2268 | break; |
2269 | case WLAN_AUTH_SHARED_KEY: | |
2270 | if (ifmgd->auth_data->expected_transaction != 4) { | |
2271 | ieee80211_auth_challenge(sdata, mgmt, len); | |
2272 | /* need another frame */ | |
2273 | return RX_MGMT_NONE; | |
2274 | } | |
2275 | break; | |
2276 | default: | |
2277 | WARN_ONCE(1, "invalid auth alg %d", | |
2278 | ifmgd->auth_data->algorithm); | |
2279 | return RX_MGMT_NONE; | |
2280 | } | |
2281 | ||
bdcbd8e0 | 2282 | sdata_info(sdata, "authenticated\n"); |
66e67e41 JB |
2283 | ifmgd->auth_data->done = true; |
2284 | ifmgd->auth_data->timeout = jiffies + IEEE80211_AUTH_WAIT_ASSOC; | |
89afe614 | 2285 | ifmgd->auth_data->timeout_started = true; |
66e67e41 JB |
2286 | run_again(ifmgd, ifmgd->auth_data->timeout); |
2287 | ||
6b8ece3a JM |
2288 | if (ifmgd->auth_data->algorithm == WLAN_AUTH_SAE && |
2289 | ifmgd->auth_data->expected_transaction != 2) { | |
2290 | /* | |
2291 | * Report auth frame to user space for processing since another | |
2292 | * round of Authentication frames is still needed. | |
2293 | */ | |
2294 | return RX_MGMT_CFG80211_RX_AUTH; | |
2295 | } | |
2296 | ||
66e67e41 JB |
2297 | /* move station state to auth */ |
2298 | mutex_lock(&sdata->local->sta_mtx); | |
2299 | sta = sta_info_get(sdata, bssid); | |
2300 | if (!sta) { | |
2301 | WARN_ONCE(1, "%s: STA %pM not found", sdata->name, bssid); | |
2302 | goto out_err; | |
2303 | } | |
2304 | if (sta_info_move_state(sta, IEEE80211_STA_AUTH)) { | |
bdcbd8e0 | 2305 | sdata_info(sdata, "failed moving %pM to auth\n", bssid); |
66e67e41 JB |
2306 | goto out_err; |
2307 | } | |
2308 | mutex_unlock(&sdata->local->sta_mtx); | |
2309 | ||
2310 | return RX_MGMT_CFG80211_RX_AUTH; | |
2311 | out_err: | |
2312 | mutex_unlock(&sdata->local->sta_mtx); | |
2313 | /* ignore frame -- wait for timeout */ | |
2314 | return RX_MGMT_NONE; | |
2315 | } | |
2316 | ||
2317 | ||
77fdaa12 JB |
2318 | static enum rx_mgmt_action __must_check |
2319 | ieee80211_rx_mgmt_deauth(struct ieee80211_sub_if_data *sdata, | |
77fdaa12 | 2320 | struct ieee80211_mgmt *mgmt, size_t len) |
f0706e82 | 2321 | { |
46900298 | 2322 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
77fdaa12 | 2323 | const u8 *bssid = NULL; |
f0706e82 JB |
2324 | u16 reason_code; |
2325 | ||
66e67e41 JB |
2326 | lockdep_assert_held(&ifmgd->mtx); |
2327 | ||
f4ea83dd | 2328 | if (len < 24 + 2) |
77fdaa12 | 2329 | return RX_MGMT_NONE; |
f0706e82 | 2330 | |
66e67e41 | 2331 | if (!ifmgd->associated || |
b203ca39 | 2332 | !ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid)) |
66e67e41 | 2333 | return RX_MGMT_NONE; |
77fdaa12 | 2334 | |
0c1ad2ca | 2335 | bssid = ifmgd->associated->bssid; |
f0706e82 JB |
2336 | |
2337 | reason_code = le16_to_cpu(mgmt->u.deauth.reason_code); | |
2338 | ||
bdcbd8e0 JB |
2339 | sdata_info(sdata, "deauthenticated from %pM (Reason: %u)\n", |
2340 | bssid, reason_code); | |
77fdaa12 | 2341 | |
37ad3888 JB |
2342 | ieee80211_set_disassoc(sdata, 0, 0, false, NULL); |
2343 | ||
77fdaa12 | 2344 | return RX_MGMT_CFG80211_DEAUTH; |
f0706e82 JB |
2345 | } |
2346 | ||
2347 | ||
77fdaa12 JB |
2348 | static enum rx_mgmt_action __must_check |
2349 | ieee80211_rx_mgmt_disassoc(struct ieee80211_sub_if_data *sdata, | |
2350 | struct ieee80211_mgmt *mgmt, size_t len) | |
f0706e82 | 2351 | { |
46900298 | 2352 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
f0706e82 JB |
2353 | u16 reason_code; |
2354 | ||
66e67e41 | 2355 | lockdep_assert_held(&ifmgd->mtx); |
77fdaa12 | 2356 | |
66e67e41 | 2357 | if (len < 24 + 2) |
77fdaa12 JB |
2358 | return RX_MGMT_NONE; |
2359 | ||
66e67e41 | 2360 | if (!ifmgd->associated || |
b203ca39 | 2361 | !ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid)) |
77fdaa12 | 2362 | return RX_MGMT_NONE; |
f0706e82 JB |
2363 | |
2364 | reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code); | |
2365 | ||
bdcbd8e0 JB |
2366 | sdata_info(sdata, "disassociated from %pM (Reason: %u)\n", |
2367 | mgmt->sa, reason_code); | |
f0706e82 | 2368 | |
37ad3888 JB |
2369 | ieee80211_set_disassoc(sdata, 0, 0, false, NULL); |
2370 | ||
77fdaa12 | 2371 | return RX_MGMT_CFG80211_DISASSOC; |
f0706e82 JB |
2372 | } |
2373 | ||
c74d084f CL |
2374 | static void ieee80211_get_rates(struct ieee80211_supported_band *sband, |
2375 | u8 *supp_rates, unsigned int supp_rates_len, | |
2376 | u32 *rates, u32 *basic_rates, | |
2377 | bool *have_higher_than_11mbit, | |
2378 | int *min_rate, int *min_rate_index) | |
2379 | { | |
2380 | int i, j; | |
2381 | ||
2382 | for (i = 0; i < supp_rates_len; i++) { | |
2383 | int rate = (supp_rates[i] & 0x7f) * 5; | |
2384 | bool is_basic = !!(supp_rates[i] & 0x80); | |
2385 | ||
2386 | if (rate > 110) | |
2387 | *have_higher_than_11mbit = true; | |
2388 | ||
2389 | /* | |
2390 | * BSS_MEMBERSHIP_SELECTOR_HT_PHY is defined in 802.11n-2009 | |
2391 | * 7.3.2.2 as a magic value instead of a rate. Hence, skip it. | |
2392 | * | |
2393 | * Note: Even through the membership selector and the basic | |
2394 | * rate flag share the same bit, they are not exactly | |
2395 | * the same. | |
2396 | */ | |
2397 | if (!!(supp_rates[i] & 0x80) && | |
2398 | (supp_rates[i] & 0x7f) == BSS_MEMBERSHIP_SELECTOR_HT_PHY) | |
2399 | continue; | |
2400 | ||
2401 | for (j = 0; j < sband->n_bitrates; j++) { | |
2402 | if (sband->bitrates[j].bitrate == rate) { | |
2403 | *rates |= BIT(j); | |
2404 | if (is_basic) | |
2405 | *basic_rates |= BIT(j); | |
2406 | if (rate < *min_rate) { | |
2407 | *min_rate = rate; | |
2408 | *min_rate_index = j; | |
2409 | } | |
2410 | break; | |
2411 | } | |
2412 | } | |
2413 | } | |
2414 | } | |
f0706e82 | 2415 | |
66e67e41 JB |
2416 | static void ieee80211_destroy_assoc_data(struct ieee80211_sub_if_data *sdata, |
2417 | bool assoc) | |
2418 | { | |
2419 | struct ieee80211_mgd_assoc_data *assoc_data = sdata->u.mgd.assoc_data; | |
2420 | ||
2421 | lockdep_assert_held(&sdata->u.mgd.mtx); | |
2422 | ||
66e67e41 JB |
2423 | if (!assoc) { |
2424 | sta_info_destroy_addr(sdata, assoc_data->bss->bssid); | |
2425 | ||
2426 | memset(sdata->u.mgd.bssid, 0, ETH_ALEN); | |
2427 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID); | |
028e8da0 | 2428 | sdata->u.mgd.flags = 0; |
55de908a | 2429 | ieee80211_vif_release_channel(sdata); |
66e67e41 JB |
2430 | } |
2431 | ||
2432 | kfree(assoc_data); | |
2433 | sdata->u.mgd.assoc_data = NULL; | |
2434 | } | |
2435 | ||
2436 | static bool ieee80211_assoc_success(struct ieee80211_sub_if_data *sdata, | |
2437 | struct cfg80211_bss *cbss, | |
af6b6374 | 2438 | struct ieee80211_mgmt *mgmt, size_t len) |
f0706e82 | 2439 | { |
46900298 | 2440 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
471b3efd | 2441 | struct ieee80211_local *local = sdata->local; |
8318d78a | 2442 | struct ieee80211_supported_band *sband; |
f0706e82 | 2443 | struct sta_info *sta; |
af6b6374 | 2444 | u8 *pos; |
af6b6374 | 2445 | u16 capab_info, aid; |
f0706e82 | 2446 | struct ieee802_11_elems elems; |
bda3933a | 2447 | struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf; |
ae5eb026 | 2448 | u32 changed = 0; |
c74d084f | 2449 | int err; |
f0706e82 | 2450 | |
af6b6374 | 2451 | /* AssocResp and ReassocResp have identical structure */ |
f0706e82 | 2452 | |
f0706e82 | 2453 | aid = le16_to_cpu(mgmt->u.assoc_resp.aid); |
af6b6374 | 2454 | capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info); |
f0706e82 | 2455 | |
1dd84aa2 | 2456 | if ((aid & (BIT(15) | BIT(14))) != (BIT(15) | BIT(14))) |
bdcbd8e0 JB |
2457 | sdata_info(sdata, "invalid AID value 0x%x; bits 15:14 not set\n", |
2458 | aid); | |
1dd84aa2 JB |
2459 | aid &= ~(BIT(15) | BIT(14)); |
2460 | ||
05cb9108 JB |
2461 | ifmgd->broken_ap = false; |
2462 | ||
2463 | if (aid == 0 || aid > IEEE80211_MAX_AID) { | |
bdcbd8e0 JB |
2464 | sdata_info(sdata, "invalid AID value %d (out of range), turn off PS\n", |
2465 | aid); | |
05cb9108 JB |
2466 | aid = 0; |
2467 | ifmgd->broken_ap = true; | |
2468 | } | |
2469 | ||
af6b6374 JB |
2470 | pos = mgmt->u.assoc_resp.variable; |
2471 | ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems); | |
2472 | ||
f0706e82 | 2473 | if (!elems.supp_rates) { |
bdcbd8e0 | 2474 | sdata_info(sdata, "no SuppRates element in AssocResp\n"); |
af6b6374 | 2475 | return false; |
f0706e82 JB |
2476 | } |
2477 | ||
46900298 | 2478 | ifmgd->aid = aid; |
f0706e82 | 2479 | |
30eb1dc2 JB |
2480 | /* |
2481 | * We previously checked these in the beacon/probe response, so | |
2482 | * they should be present here. This is just a safety net. | |
2483 | */ | |
2484 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT) && | |
2485 | (!elems.wmm_param || !elems.ht_cap_elem || !elems.ht_operation)) { | |
2486 | sdata_info(sdata, | |
2487 | "HT AP is missing WMM params or HT capability/operation in AssocResp\n"); | |
2488 | return false; | |
2489 | } | |
2490 | ||
2491 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) && | |
2492 | (!elems.vht_cap_elem || !elems.vht_operation)) { | |
2493 | sdata_info(sdata, | |
2494 | "VHT AP is missing VHT capability/operation in AssocResp\n"); | |
2495 | return false; | |
2496 | } | |
2497 | ||
2a33bee2 GE |
2498 | mutex_lock(&sdata->local->sta_mtx); |
2499 | /* | |
2500 | * station info was already allocated and inserted before | |
2501 | * the association and should be available to us | |
2502 | */ | |
7852e361 | 2503 | sta = sta_info_get(sdata, cbss->bssid); |
2a33bee2 GE |
2504 | if (WARN_ON(!sta)) { |
2505 | mutex_unlock(&sdata->local->sta_mtx); | |
af6b6374 | 2506 | return false; |
77fdaa12 | 2507 | } |
05e5e883 | 2508 | |
55de908a | 2509 | sband = local->hw.wiphy->bands[ieee80211_get_sdata_band(sdata)]; |
f709fc69 | 2510 | |
30eb1dc2 | 2511 | /* Set up internal HT/VHT capabilities */ |
a8243b72 | 2512 | if (elems.ht_cap_elem && !(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) |
ef96a842 | 2513 | ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband, |
e1a0c6b3 | 2514 | elems.ht_cap_elem, sta); |
64f68e5d | 2515 | |
818255ea MP |
2516 | if (elems.vht_cap_elem && !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) |
2517 | ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband, | |
4a34215e | 2518 | elems.vht_cap_elem, sta); |
818255ea | 2519 | |
30eb1dc2 JB |
2520 | /* |
2521 | * Some APs, e.g. Netgear WNDR3700, report invalid HT operation data | |
2522 | * in their association response, so ignore that data for our own | |
2523 | * configuration. If it changed since the last beacon, we'll get the | |
2524 | * next beacon and update then. | |
2525 | */ | |
1128958d | 2526 | |
bee7f586 JB |
2527 | /* |
2528 | * If an operating mode notification IE is present, override the | |
2529 | * NSS calculation (that would be done in rate_control_rate_init()) | |
2530 | * and use the # of streams from that element. | |
2531 | */ | |
2532 | if (elems.opmode_notif && | |
2533 | !(*elems.opmode_notif & IEEE80211_OPMODE_NOTIF_RX_NSS_TYPE_BF)) { | |
2534 | u8 nss; | |
2535 | ||
2536 | nss = *elems.opmode_notif & IEEE80211_OPMODE_NOTIF_RX_NSS_MASK; | |
2537 | nss >>= IEEE80211_OPMODE_NOTIF_RX_NSS_SHIFT; | |
2538 | nss += 1; | |
2539 | sta->sta.rx_nss = nss; | |
2540 | } | |
2541 | ||
4b7679a5 | 2542 | rate_control_rate_init(sta); |
f0706e82 | 2543 | |
46900298 | 2544 | if (ifmgd->flags & IEEE80211_STA_MFP_ENABLED) |
c2c98fde | 2545 | set_sta_flag(sta, WLAN_STA_MFP); |
5394af4d | 2546 | |
ddf4ac53 | 2547 | if (elems.wmm_param) |
c2c98fde | 2548 | set_sta_flag(sta, WLAN_STA_WME); |
ddf4ac53 | 2549 | |
3e4d40fa | 2550 | err = sta_info_move_state(sta, IEEE80211_STA_ASSOC); |
c8987876 JB |
2551 | if (!err && !(ifmgd->flags & IEEE80211_STA_CONTROL_PORT)) |
2552 | err = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED); | |
2553 | if (err) { | |
bdcbd8e0 JB |
2554 | sdata_info(sdata, |
2555 | "failed to move station %pM to desired state\n", | |
2556 | sta->sta.addr); | |
c8987876 JB |
2557 | WARN_ON(__sta_info_destroy(sta)); |
2558 | mutex_unlock(&sdata->local->sta_mtx); | |
2559 | return false; | |
2560 | } | |
2561 | ||
7852e361 | 2562 | mutex_unlock(&sdata->local->sta_mtx); |
ddf4ac53 | 2563 | |
f2176d72 JO |
2564 | /* |
2565 | * Always handle WMM once after association regardless | |
2566 | * of the first value the AP uses. Setting -1 here has | |
2567 | * that effect because the AP values is an unsigned | |
2568 | * 4-bit value. | |
2569 | */ | |
2570 | ifmgd->wmm_last_param_set = -1; | |
2571 | ||
ddf4ac53 | 2572 | if (elems.wmm_param) |
4ced3f74 | 2573 | ieee80211_sta_wmm_params(local, sdata, elems.wmm_param, |
60f8b39c | 2574 | elems.wmm_param_len); |
aa837e1d | 2575 | else |
3abead59 JB |
2576 | ieee80211_set_wmm_default(sdata, false); |
2577 | changed |= BSS_CHANGED_QOS; | |
f0706e82 | 2578 | |
60f8b39c JB |
2579 | /* set AID and assoc capability, |
2580 | * ieee80211_set_associated() will tell the driver */ | |
2581 | bss_conf->aid = aid; | |
2582 | bss_conf->assoc_capability = capab_info; | |
0c1ad2ca | 2583 | ieee80211_set_associated(sdata, cbss, changed); |
f0706e82 | 2584 | |
d524215f FF |
2585 | /* |
2586 | * If we're using 4-addr mode, let the AP know that we're | |
2587 | * doing so, so that it can create the STA VLAN on its side | |
2588 | */ | |
2589 | if (ifmgd->use_4addr) | |
2590 | ieee80211_send_4addr_nullfunc(local, sdata); | |
2591 | ||
15b7b062 | 2592 | /* |
b291ba11 JB |
2593 | * Start timer to probe the connection to the AP now. |
2594 | * Also start the timer that will detect beacon loss. | |
15b7b062 | 2595 | */ |
b291ba11 | 2596 | ieee80211_sta_rx_notify(sdata, (struct ieee80211_hdr *)mgmt); |
d3a910a8 | 2597 | ieee80211_sta_reset_beacon_monitor(sdata); |
15b7b062 | 2598 | |
af6b6374 | 2599 | return true; |
f0706e82 JB |
2600 | } |
2601 | ||
66e67e41 JB |
2602 | static enum rx_mgmt_action __must_check |
2603 | ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata, | |
2604 | struct ieee80211_mgmt *mgmt, size_t len, | |
2605 | struct cfg80211_bss **bss) | |
2606 | { | |
2607 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
2608 | struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data; | |
2609 | u16 capab_info, status_code, aid; | |
2610 | struct ieee802_11_elems elems; | |
2611 | u8 *pos; | |
2612 | bool reassoc; | |
2613 | ||
2614 | lockdep_assert_held(&ifmgd->mtx); | |
2615 | ||
2616 | if (!assoc_data) | |
2617 | return RX_MGMT_NONE; | |
b203ca39 | 2618 | if (!ether_addr_equal(assoc_data->bss->bssid, mgmt->bssid)) |
66e67e41 JB |
2619 | return RX_MGMT_NONE; |
2620 | ||
2621 | /* | |
2622 | * AssocResp and ReassocResp have identical structure, so process both | |
2623 | * of them in this function. | |
2624 | */ | |
2625 | ||
2626 | if (len < 24 + 6) | |
2627 | return RX_MGMT_NONE; | |
2628 | ||
2629 | reassoc = ieee80211_is_reassoc_req(mgmt->frame_control); | |
2630 | capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info); | |
2631 | status_code = le16_to_cpu(mgmt->u.assoc_resp.status_code); | |
2632 | aid = le16_to_cpu(mgmt->u.assoc_resp.aid); | |
2633 | ||
bdcbd8e0 JB |
2634 | sdata_info(sdata, |
2635 | "RX %sssocResp from %pM (capab=0x%x status=%d aid=%d)\n", | |
2636 | reassoc ? "Rea" : "A", mgmt->sa, | |
2637 | capab_info, status_code, (u16)(aid & ~(BIT(15) | BIT(14)))); | |
66e67e41 JB |
2638 | |
2639 | pos = mgmt->u.assoc_resp.variable; | |
2640 | ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems); | |
2641 | ||
2642 | if (status_code == WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY && | |
79ba1d89 JB |
2643 | elems.timeout_int && |
2644 | elems.timeout_int->type == WLAN_TIMEOUT_ASSOC_COMEBACK) { | |
66e67e41 | 2645 | u32 tu, ms; |
79ba1d89 | 2646 | tu = le32_to_cpu(elems.timeout_int->value); |
66e67e41 | 2647 | ms = tu * 1024 / 1000; |
bdcbd8e0 JB |
2648 | sdata_info(sdata, |
2649 | "%pM rejected association temporarily; comeback duration %u TU (%u ms)\n", | |
2650 | mgmt->sa, tu, ms); | |
66e67e41 | 2651 | assoc_data->timeout = jiffies + msecs_to_jiffies(ms); |
89afe614 | 2652 | assoc_data->timeout_started = true; |
66e67e41 JB |
2653 | if (ms > IEEE80211_ASSOC_TIMEOUT) |
2654 | run_again(ifmgd, assoc_data->timeout); | |
2655 | return RX_MGMT_NONE; | |
2656 | } | |
2657 | ||
2658 | *bss = assoc_data->bss; | |
2659 | ||
2660 | if (status_code != WLAN_STATUS_SUCCESS) { | |
bdcbd8e0 JB |
2661 | sdata_info(sdata, "%pM denied association (code=%d)\n", |
2662 | mgmt->sa, status_code); | |
66e67e41 JB |
2663 | ieee80211_destroy_assoc_data(sdata, false); |
2664 | } else { | |
66e67e41 JB |
2665 | if (!ieee80211_assoc_success(sdata, *bss, mgmt, len)) { |
2666 | /* oops -- internal error -- send timeout for now */ | |
10a9109f | 2667 | ieee80211_destroy_assoc_data(sdata, false); |
5b112d3d | 2668 | cfg80211_put_bss(sdata->local->hw.wiphy, *bss); |
66e67e41 JB |
2669 | return RX_MGMT_CFG80211_ASSOC_TIMEOUT; |
2670 | } | |
635d999f | 2671 | sdata_info(sdata, "associated\n"); |
79ebfb85 JB |
2672 | |
2673 | /* | |
2674 | * destroy assoc_data afterwards, as otherwise an idle | |
2675 | * recalc after assoc_data is NULL but before associated | |
2676 | * is set can cause the interface to go idle | |
2677 | */ | |
2678 | ieee80211_destroy_assoc_data(sdata, true); | |
66e67e41 JB |
2679 | } |
2680 | ||
2681 | return RX_MGMT_CFG80211_RX_ASSOC; | |
2682 | } | |
8e3c1b77 | 2683 | |
98c8fccf | 2684 | static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata, |
8e3c1b77 | 2685 | struct ieee80211_mgmt *mgmt, size_t len, |
98c8fccf | 2686 | struct ieee80211_rx_status *rx_status, |
d45c4172 | 2687 | struct ieee802_11_elems *elems) |
98c8fccf JB |
2688 | { |
2689 | struct ieee80211_local *local = sdata->local; | |
2690 | int freq; | |
c2b13452 | 2691 | struct ieee80211_bss *bss; |
98c8fccf | 2692 | struct ieee80211_channel *channel; |
56007a02 JB |
2693 | bool need_ps = false; |
2694 | ||
b4f286a1 JB |
2695 | lockdep_assert_held(&sdata->u.mgd.mtx); |
2696 | ||
826262c3 JB |
2697 | if ((sdata->u.mgd.associated && |
2698 | ether_addr_equal(mgmt->bssid, sdata->u.mgd.associated->bssid)) || | |
2699 | (sdata->u.mgd.assoc_data && | |
2700 | ether_addr_equal(mgmt->bssid, | |
2701 | sdata->u.mgd.assoc_data->bss->bssid))) { | |
56007a02 | 2702 | /* not previously set so we may need to recalc */ |
826262c3 JB |
2703 | need_ps = sdata->u.mgd.associated && !sdata->u.mgd.dtim_period; |
2704 | ||
2705 | if (elems->tim && !elems->parse_error) { | |
4a3cb702 | 2706 | const struct ieee80211_tim_ie *tim_ie = elems->tim; |
826262c3 JB |
2707 | sdata->u.mgd.dtim_period = tim_ie->dtim_period; |
2708 | } | |
56007a02 | 2709 | } |
98c8fccf | 2710 | |
1cd8e88e | 2711 | if (elems->ds_params) |
59eb21a6 BR |
2712 | freq = ieee80211_channel_to_frequency(elems->ds_params[0], |
2713 | rx_status->band); | |
98c8fccf JB |
2714 | else |
2715 | freq = rx_status->freq; | |
2716 | ||
2717 | channel = ieee80211_get_channel(local->hw.wiphy, freq); | |
2718 | ||
2719 | if (!channel || channel->flags & IEEE80211_CHAN_DISABLED) | |
2720 | return; | |
2721 | ||
98c8fccf | 2722 | bss = ieee80211_bss_info_update(local, rx_status, mgmt, len, elems, |
d45c4172 | 2723 | channel); |
77fdaa12 JB |
2724 | if (bss) |
2725 | ieee80211_rx_bss_put(local, bss); | |
2726 | ||
37799e52 JB |
2727 | if (!sdata->u.mgd.associated || |
2728 | !ether_addr_equal(mgmt->bssid, sdata->u.mgd.associated->bssid)) | |
98c8fccf JB |
2729 | return; |
2730 | ||
56007a02 JB |
2731 | if (need_ps) { |
2732 | mutex_lock(&local->iflist_mtx); | |
2733 | ieee80211_recalc_ps(local, -1); | |
2734 | mutex_unlock(&local->iflist_mtx); | |
2735 | } | |
2736 | ||
37799e52 | 2737 | ieee80211_sta_process_chanswitch(sdata, rx_status->mactime, elems); |
b4f286a1 | 2738 | |
f0706e82 JB |
2739 | } |
2740 | ||
2741 | ||
f698d856 | 2742 | static void ieee80211_rx_mgmt_probe_resp(struct ieee80211_sub_if_data *sdata, |
af6b6374 | 2743 | struct sk_buff *skb) |
f0706e82 | 2744 | { |
af6b6374 | 2745 | struct ieee80211_mgmt *mgmt = (void *)skb->data; |
15b7b062 | 2746 | struct ieee80211_if_managed *ifmgd; |
af6b6374 JB |
2747 | struct ieee80211_rx_status *rx_status = (void *) skb->cb; |
2748 | size_t baselen, len = skb->len; | |
ae6a44e3 EK |
2749 | struct ieee802_11_elems elems; |
2750 | ||
15b7b062 KV |
2751 | ifmgd = &sdata->u.mgd; |
2752 | ||
77fdaa12 JB |
2753 | ASSERT_MGD_MTX(ifmgd); |
2754 | ||
b203ca39 | 2755 | if (!ether_addr_equal(mgmt->da, sdata->vif.addr)) |
8e7cdbb6 TW |
2756 | return; /* ignore ProbeResp to foreign address */ |
2757 | ||
ae6a44e3 EK |
2758 | baselen = (u8 *) mgmt->u.probe_resp.variable - (u8 *) mgmt; |
2759 | if (baselen > len) | |
2760 | return; | |
2761 | ||
2762 | ieee802_11_parse_elems(mgmt->u.probe_resp.variable, len - baselen, | |
2763 | &elems); | |
2764 | ||
d45c4172 | 2765 | ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems); |
9859b81e | 2766 | |
77fdaa12 | 2767 | if (ifmgd->associated && |
b203ca39 | 2768 | ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid)) |
4e5ff376 | 2769 | ieee80211_reset_ap_probe(sdata); |
66e67e41 JB |
2770 | |
2771 | if (ifmgd->auth_data && !ifmgd->auth_data->bss->proberesp_ies && | |
b203ca39 | 2772 | ether_addr_equal(mgmt->bssid, ifmgd->auth_data->bss->bssid)) { |
66e67e41 | 2773 | /* got probe response, continue with auth */ |
bdcbd8e0 | 2774 | sdata_info(sdata, "direct probe responded\n"); |
66e67e41 JB |
2775 | ifmgd->auth_data->tries = 0; |
2776 | ifmgd->auth_data->timeout = jiffies; | |
89afe614 | 2777 | ifmgd->auth_data->timeout_started = true; |
66e67e41 JB |
2778 | run_again(ifmgd, ifmgd->auth_data->timeout); |
2779 | } | |
f0706e82 JB |
2780 | } |
2781 | ||
d91f36db JB |
2782 | /* |
2783 | * This is the canonical list of information elements we care about, | |
2784 | * the filter code also gives us all changes to the Microsoft OUI | |
2785 | * (00:50:F2) vendor IE which is used for WMM which we need to track. | |
2786 | * | |
2787 | * We implement beacon filtering in software since that means we can | |
2788 | * avoid processing the frame here and in cfg80211, and userspace | |
2789 | * will not be able to tell whether the hardware supports it or not. | |
2790 | * | |
2791 | * XXX: This list needs to be dynamic -- userspace needs to be able to | |
2792 | * add items it requires. It also needs to be able to tell us to | |
2793 | * look out for other vendor IEs. | |
2794 | */ | |
2795 | static const u64 care_about_ies = | |
1d4df3a5 JB |
2796 | (1ULL << WLAN_EID_COUNTRY) | |
2797 | (1ULL << WLAN_EID_ERP_INFO) | | |
2798 | (1ULL << WLAN_EID_CHANNEL_SWITCH) | | |
2799 | (1ULL << WLAN_EID_PWR_CONSTRAINT) | | |
2800 | (1ULL << WLAN_EID_HT_CAPABILITY) | | |
074d46d1 | 2801 | (1ULL << WLAN_EID_HT_OPERATION); |
d91f36db | 2802 | |
30eb1dc2 JB |
2803 | static enum rx_mgmt_action |
2804 | ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata, | |
2805 | struct ieee80211_mgmt *mgmt, size_t len, | |
2806 | u8 *deauth_buf, struct ieee80211_rx_status *rx_status) | |
f0706e82 | 2807 | { |
d91f36db | 2808 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
17e4ec14 | 2809 | struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf; |
f0706e82 JB |
2810 | size_t baselen; |
2811 | struct ieee802_11_elems elems; | |
f698d856 | 2812 | struct ieee80211_local *local = sdata->local; |
55de908a JB |
2813 | struct ieee80211_chanctx_conf *chanctx_conf; |
2814 | struct ieee80211_channel *chan; | |
bee7f586 | 2815 | struct sta_info *sta; |
471b3efd | 2816 | u32 changed = 0; |
f87ad637 | 2817 | bool erp_valid; |
7a5158ef | 2818 | u8 erp_value = 0; |
d91f36db | 2819 | u32 ncrc; |
77fdaa12 JB |
2820 | u8 *bssid; |
2821 | ||
66e67e41 | 2822 | lockdep_assert_held(&ifmgd->mtx); |
f0706e82 | 2823 | |
ae6a44e3 EK |
2824 | /* Process beacon from the current BSS */ |
2825 | baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt; | |
2826 | if (baselen > len) | |
30eb1dc2 | 2827 | return RX_MGMT_NONE; |
ae6a44e3 | 2828 | |
55de908a JB |
2829 | rcu_read_lock(); |
2830 | chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); | |
2831 | if (!chanctx_conf) { | |
2832 | rcu_read_unlock(); | |
30eb1dc2 | 2833 | return RX_MGMT_NONE; |
55de908a JB |
2834 | } |
2835 | ||
4bf88530 | 2836 | if (rx_status->freq != chanctx_conf->def.chan->center_freq) { |
55de908a | 2837 | rcu_read_unlock(); |
30eb1dc2 | 2838 | return RX_MGMT_NONE; |
55de908a | 2839 | } |
4bf88530 | 2840 | chan = chanctx_conf->def.chan; |
55de908a | 2841 | rcu_read_unlock(); |
f0706e82 | 2842 | |
c65dd147 | 2843 | if (ifmgd->assoc_data && ifmgd->assoc_data->need_beacon && |
b203ca39 | 2844 | ether_addr_equal(mgmt->bssid, ifmgd->assoc_data->bss->bssid)) { |
66e67e41 JB |
2845 | ieee802_11_parse_elems(mgmt->u.beacon.variable, |
2846 | len - baselen, &elems); | |
77fdaa12 | 2847 | |
d45c4172 | 2848 | ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems); |
66e67e41 | 2849 | ifmgd->assoc_data->have_beacon = true; |
c65dd147 | 2850 | ifmgd->assoc_data->need_beacon = false; |
ef429dad JB |
2851 | if (local->hw.flags & IEEE80211_HW_TIMING_BEACON_ONLY) { |
2852 | sdata->vif.bss_conf.sync_tsf = | |
2853 | le64_to_cpu(mgmt->u.beacon.timestamp); | |
2854 | sdata->vif.bss_conf.sync_device_ts = | |
2855 | rx_status->device_timestamp; | |
2856 | if (elems.tim) | |
2857 | sdata->vif.bss_conf.sync_dtim_count = | |
2858 | elems.tim->dtim_count; | |
2859 | else | |
2860 | sdata->vif.bss_conf.sync_dtim_count = 0; | |
2861 | } | |
66e67e41 JB |
2862 | /* continue assoc process */ |
2863 | ifmgd->assoc_data->timeout = jiffies; | |
89afe614 | 2864 | ifmgd->assoc_data->timeout_started = true; |
66e67e41 | 2865 | run_again(ifmgd, ifmgd->assoc_data->timeout); |
30eb1dc2 | 2866 | return RX_MGMT_NONE; |
66e67e41 | 2867 | } |
77fdaa12 | 2868 | |
66e67e41 | 2869 | if (!ifmgd->associated || |
b203ca39 | 2870 | !ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid)) |
30eb1dc2 | 2871 | return RX_MGMT_NONE; |
66e67e41 | 2872 | bssid = ifmgd->associated->bssid; |
f0706e82 | 2873 | |
17e4ec14 JM |
2874 | /* Track average RSSI from the Beacon frames of the current AP */ |
2875 | ifmgd->last_beacon_signal = rx_status->signal; | |
2876 | if (ifmgd->flags & IEEE80211_STA_RESET_SIGNAL_AVE) { | |
2877 | ifmgd->flags &= ~IEEE80211_STA_RESET_SIGNAL_AVE; | |
3ba06c6f | 2878 | ifmgd->ave_beacon_signal = rx_status->signal * 16; |
17e4ec14 | 2879 | ifmgd->last_cqm_event_signal = 0; |
391a200a | 2880 | ifmgd->count_beacon_signal = 1; |
615f7b9b | 2881 | ifmgd->last_ave_beacon_signal = 0; |
17e4ec14 JM |
2882 | } else { |
2883 | ifmgd->ave_beacon_signal = | |
2884 | (IEEE80211_SIGNAL_AVE_WEIGHT * rx_status->signal * 16 + | |
2885 | (16 - IEEE80211_SIGNAL_AVE_WEIGHT) * | |
2886 | ifmgd->ave_beacon_signal) / 16; | |
391a200a | 2887 | ifmgd->count_beacon_signal++; |
17e4ec14 | 2888 | } |
615f7b9b MV |
2889 | |
2890 | if (ifmgd->rssi_min_thold != ifmgd->rssi_max_thold && | |
2891 | ifmgd->count_beacon_signal >= IEEE80211_SIGNAL_AVE_MIN_COUNT) { | |
2892 | int sig = ifmgd->ave_beacon_signal; | |
2893 | int last_sig = ifmgd->last_ave_beacon_signal; | |
2894 | ||
2895 | /* | |
2896 | * if signal crosses either of the boundaries, invoke callback | |
2897 | * with appropriate parameters | |
2898 | */ | |
2899 | if (sig > ifmgd->rssi_max_thold && | |
2900 | (last_sig <= ifmgd->rssi_min_thold || last_sig == 0)) { | |
2901 | ifmgd->last_ave_beacon_signal = sig; | |
887da917 | 2902 | drv_rssi_callback(local, sdata, RSSI_EVENT_HIGH); |
615f7b9b MV |
2903 | } else if (sig < ifmgd->rssi_min_thold && |
2904 | (last_sig >= ifmgd->rssi_max_thold || | |
2905 | last_sig == 0)) { | |
2906 | ifmgd->last_ave_beacon_signal = sig; | |
887da917 | 2907 | drv_rssi_callback(local, sdata, RSSI_EVENT_LOW); |
615f7b9b MV |
2908 | } |
2909 | } | |
2910 | ||
17e4ec14 | 2911 | if (bss_conf->cqm_rssi_thold && |
391a200a | 2912 | ifmgd->count_beacon_signal >= IEEE80211_SIGNAL_AVE_MIN_COUNT && |
ea086359 | 2913 | !(sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)) { |
17e4ec14 JM |
2914 | int sig = ifmgd->ave_beacon_signal / 16; |
2915 | int last_event = ifmgd->last_cqm_event_signal; | |
2916 | int thold = bss_conf->cqm_rssi_thold; | |
2917 | int hyst = bss_conf->cqm_rssi_hyst; | |
2918 | if (sig < thold && | |
2919 | (last_event == 0 || sig < last_event - hyst)) { | |
2920 | ifmgd->last_cqm_event_signal = sig; | |
2921 | ieee80211_cqm_rssi_notify( | |
2922 | &sdata->vif, | |
2923 | NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW, | |
2924 | GFP_KERNEL); | |
2925 | } else if (sig > thold && | |
2926 | (last_event == 0 || sig > last_event + hyst)) { | |
2927 | ifmgd->last_cqm_event_signal = sig; | |
2928 | ieee80211_cqm_rssi_notify( | |
2929 | &sdata->vif, | |
2930 | NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH, | |
2931 | GFP_KERNEL); | |
2932 | } | |
2933 | } | |
2934 | ||
b291ba11 | 2935 | if (ifmgd->flags & IEEE80211_STA_BEACON_POLL) { |
bdcbd8e0 | 2936 | mlme_dbg_ratelimited(sdata, |
112c31f0 | 2937 | "cancelling AP probe due to a received beacon\n"); |
925e64c3 | 2938 | mutex_lock(&local->mtx); |
b291ba11 | 2939 | ifmgd->flags &= ~IEEE80211_STA_BEACON_POLL; |
925e64c3 SG |
2940 | ieee80211_run_deferred_scan(local); |
2941 | mutex_unlock(&local->mtx); | |
2942 | ||
4e751843 JB |
2943 | mutex_lock(&local->iflist_mtx); |
2944 | ieee80211_recalc_ps(local, -1); | |
2945 | mutex_unlock(&local->iflist_mtx); | |
92778180 JM |
2946 | } |
2947 | ||
b291ba11 JB |
2948 | /* |
2949 | * Push the beacon loss detection into the future since | |
2950 | * we are processing a beacon from the AP just now. | |
2951 | */ | |
d3a910a8 | 2952 | ieee80211_sta_reset_beacon_monitor(sdata); |
b291ba11 | 2953 | |
d91f36db JB |
2954 | ncrc = crc32_be(0, (void *)&mgmt->u.beacon.beacon_int, 4); |
2955 | ncrc = ieee802_11_parse_elems_crc(mgmt->u.beacon.variable, | |
2956 | len - baselen, &elems, | |
2957 | care_about_ies, ncrc); | |
2958 | ||
25c9c875 | 2959 | if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) { |
f87ad637 RR |
2960 | bool directed_tim = ieee80211_check_tim(elems.tim, |
2961 | elems.tim_len, | |
2962 | ifmgd->aid); | |
1fb3606b | 2963 | if (directed_tim) { |
572e0012 | 2964 | if (local->hw.conf.dynamic_ps_timeout > 0) { |
70b12f26 RW |
2965 | if (local->hw.conf.flags & IEEE80211_CONF_PS) { |
2966 | local->hw.conf.flags &= ~IEEE80211_CONF_PS; | |
2967 | ieee80211_hw_config(local, | |
2968 | IEEE80211_CONF_CHANGE_PS); | |
2969 | } | |
572e0012 | 2970 | ieee80211_send_nullfunc(local, sdata, 0); |
6f0756a3 | 2971 | } else if (!local->pspolling && sdata->u.mgd.powersave) { |
572e0012 KV |
2972 | local->pspolling = true; |
2973 | ||
2974 | /* | |
2975 | * Here is assumed that the driver will be | |
2976 | * able to send ps-poll frame and receive a | |
2977 | * response even though power save mode is | |
2978 | * enabled, but some drivers might require | |
2979 | * to disable power save here. This needs | |
2980 | * to be investigated. | |
2981 | */ | |
2982 | ieee80211_send_pspoll(local, sdata); | |
2983 | } | |
a97b77b9 VN |
2984 | } |
2985 | } | |
7a5158ef | 2986 | |
488dd7b5 | 2987 | if (sdata->vif.p2p) { |
67baf663 | 2988 | struct ieee80211_p2p_noa_attr noa = {}; |
488dd7b5 JB |
2989 | int ret; |
2990 | ||
2991 | ret = cfg80211_get_p2p_attr(mgmt->u.beacon.variable, | |
2992 | len - baselen, | |
2993 | IEEE80211_P2P_ATTR_ABSENCE_NOTICE, | |
934457ee | 2994 | (u8 *) &noa, sizeof(noa)); |
67baf663 JD |
2995 | if (ret >= 2) { |
2996 | if (sdata->u.mgd.p2p_noa_index != noa.index) { | |
2997 | /* valid noa_attr and index changed */ | |
2998 | sdata->u.mgd.p2p_noa_index = noa.index; | |
2999 | memcpy(&bss_conf->p2p_noa_attr, &noa, sizeof(noa)); | |
3000 | changed |= BSS_CHANGED_P2P_PS; | |
3001 | /* | |
3002 | * make sure we update all information, the CRC | |
3003 | * mechanism doesn't look at P2P attributes. | |
3004 | */ | |
3005 | ifmgd->beacon_crc_valid = false; | |
3006 | } | |
3007 | } else if (sdata->u.mgd.p2p_noa_index != -1) { | |
3008 | /* noa_attr not found and we had valid noa_attr before */ | |
3009 | sdata->u.mgd.p2p_noa_index = -1; | |
3010 | memset(&bss_conf->p2p_noa_attr, 0, sizeof(bss_conf->p2p_noa_attr)); | |
488dd7b5 | 3011 | changed |= BSS_CHANGED_P2P_PS; |
488dd7b5 JB |
3012 | ifmgd->beacon_crc_valid = false; |
3013 | } | |
3014 | } | |
3015 | ||
d8ec4433 | 3016 | if (ncrc == ifmgd->beacon_crc && ifmgd->beacon_crc_valid) |
30eb1dc2 | 3017 | return RX_MGMT_NONE; |
30196673 | 3018 | ifmgd->beacon_crc = ncrc; |
d8ec4433 | 3019 | ifmgd->beacon_crc_valid = true; |
30196673 | 3020 | |
d45c4172 | 3021 | ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems); |
7d25745d JB |
3022 | |
3023 | if (ieee80211_sta_wmm_params(local, sdata, elems.wmm_param, | |
3024 | elems.wmm_param_len)) | |
3025 | changed |= BSS_CHANGED_QOS; | |
3026 | ||
c65dd147 EG |
3027 | /* |
3028 | * If we haven't had a beacon before, tell the driver about the | |
ef429dad | 3029 | * DTIM period (and beacon timing if desired) now. |
c65dd147 EG |
3030 | */ |
3031 | if (!bss_conf->dtim_period) { | |
3032 | /* a few bogus AP send dtim_period = 0 or no TIM IE */ | |
3033 | if (elems.tim) | |
3034 | bss_conf->dtim_period = elems.tim->dtim_period ?: 1; | |
3035 | else | |
3036 | bss_conf->dtim_period = 1; | |
ef429dad JB |
3037 | |
3038 | if (local->hw.flags & IEEE80211_HW_TIMING_BEACON_ONLY) { | |
3039 | sdata->vif.bss_conf.sync_tsf = | |
3040 | le64_to_cpu(mgmt->u.beacon.timestamp); | |
3041 | sdata->vif.bss_conf.sync_device_ts = | |
3042 | rx_status->device_timestamp; | |
3043 | if (elems.tim) | |
3044 | sdata->vif.bss_conf.sync_dtim_count = | |
3045 | elems.tim->dtim_count; | |
3046 | else | |
3047 | sdata->vif.bss_conf.sync_dtim_count = 0; | |
3048 | } | |
3049 | ||
c65dd147 EG |
3050 | changed |= BSS_CHANGED_DTIM_PERIOD; |
3051 | } | |
3052 | ||
1946bed9 | 3053 | if (elems.erp_info) { |
7a5158ef JB |
3054 | erp_valid = true; |
3055 | erp_value = elems.erp_info[0]; | |
3056 | } else { | |
3057 | erp_valid = false; | |
50c4afb9 | 3058 | } |
7a5158ef JB |
3059 | changed |= ieee80211_handle_bss_capability(sdata, |
3060 | le16_to_cpu(mgmt->u.beacon.capab_info), | |
3061 | erp_valid, erp_value); | |
f0706e82 | 3062 | |
1128958d | 3063 | mutex_lock(&local->sta_mtx); |
bee7f586 JB |
3064 | sta = sta_info_get(sdata, bssid); |
3065 | ||
30eb1dc2 JB |
3066 | if (ieee80211_config_bw(sdata, sta, elems.ht_operation, |
3067 | elems.vht_operation, bssid, &changed)) { | |
3068 | mutex_unlock(&local->sta_mtx); | |
3069 | ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, | |
3070 | WLAN_REASON_DEAUTH_LEAVING, | |
3071 | true, deauth_buf); | |
3072 | return RX_MGMT_CFG80211_TX_DEAUTH; | |
3073 | } | |
bee7f586 JB |
3074 | |
3075 | if (sta && elems.opmode_notif) | |
3076 | ieee80211_vht_handle_opmode(sdata, sta, *elems.opmode_notif, | |
3077 | rx_status->band, true); | |
1128958d | 3078 | mutex_unlock(&local->sta_mtx); |
d3c990fb | 3079 | |
04b7b2ff JB |
3080 | if (elems.country_elem && elems.pwr_constr_elem && |
3081 | mgmt->u.probe_resp.capab_info & | |
3082 | cpu_to_le16(WLAN_CAPABILITY_SPECTRUM_MGMT)) | |
1ea6f9c0 JB |
3083 | changed |= ieee80211_handle_pwr_constr(sdata, chan, |
3084 | elems.country_elem, | |
3085 | elems.country_elem_len, | |
3086 | elems.pwr_constr_elem); | |
3f2355cb | 3087 | |
471b3efd | 3088 | ieee80211_bss_info_change_notify(sdata, changed); |
30eb1dc2 JB |
3089 | |
3090 | return RX_MGMT_NONE; | |
f0706e82 JB |
3091 | } |
3092 | ||
1fa57d01 JB |
3093 | void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, |
3094 | struct sk_buff *skb) | |
f0706e82 | 3095 | { |
77fdaa12 | 3096 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
f0706e82 | 3097 | struct ieee80211_rx_status *rx_status; |
f0706e82 | 3098 | struct ieee80211_mgmt *mgmt; |
66e67e41 | 3099 | struct cfg80211_bss *bss = NULL; |
77fdaa12 | 3100 | enum rx_mgmt_action rma = RX_MGMT_NONE; |
30eb1dc2 | 3101 | u8 deauth_buf[IEEE80211_DEAUTH_FRAME_LEN]; |
f0706e82 | 3102 | u16 fc; |
1b3a2e49 JB |
3103 | struct ieee802_11_elems elems; |
3104 | int ies_len; | |
f0706e82 | 3105 | |
f0706e82 JB |
3106 | rx_status = (struct ieee80211_rx_status *) skb->cb; |
3107 | mgmt = (struct ieee80211_mgmt *) skb->data; | |
3108 | fc = le16_to_cpu(mgmt->frame_control); | |
3109 | ||
77fdaa12 JB |
3110 | mutex_lock(&ifmgd->mtx); |
3111 | ||
66e67e41 JB |
3112 | switch (fc & IEEE80211_FCTL_STYPE) { |
3113 | case IEEE80211_STYPE_BEACON: | |
30eb1dc2 JB |
3114 | rma = ieee80211_rx_mgmt_beacon(sdata, mgmt, skb->len, |
3115 | deauth_buf, rx_status); | |
66e67e41 JB |
3116 | break; |
3117 | case IEEE80211_STYPE_PROBE_RESP: | |
3118 | ieee80211_rx_mgmt_probe_resp(sdata, skb); | |
3119 | break; | |
3120 | case IEEE80211_STYPE_AUTH: | |
3121 | rma = ieee80211_rx_mgmt_auth(sdata, mgmt, skb->len); | |
3122 | break; | |
3123 | case IEEE80211_STYPE_DEAUTH: | |
3124 | rma = ieee80211_rx_mgmt_deauth(sdata, mgmt, skb->len); | |
3125 | break; | |
3126 | case IEEE80211_STYPE_DISASSOC: | |
3127 | rma = ieee80211_rx_mgmt_disassoc(sdata, mgmt, skb->len); | |
3128 | break; | |
3129 | case IEEE80211_STYPE_ASSOC_RESP: | |
3130 | case IEEE80211_STYPE_REASSOC_RESP: | |
3131 | rma = ieee80211_rx_mgmt_assoc_resp(sdata, mgmt, skb->len, &bss); | |
3132 | break; | |
3133 | case IEEE80211_STYPE_ACTION: | |
37799e52 | 3134 | if (mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT) { |
1b3a2e49 JB |
3135 | ies_len = skb->len - |
3136 | offsetof(struct ieee80211_mgmt, | |
3137 | u.action.u.chan_switch.variable); | |
37799e52 JB |
3138 | |
3139 | if (ies_len < 0) | |
3140 | break; | |
3141 | ||
3142 | ieee802_11_parse_elems( | |
3143 | mgmt->u.action.u.chan_switch.variable, | |
3144 | ies_len, &elems); | |
3145 | ||
3146 | if (elems.parse_error) | |
3147 | break; | |
3148 | ||
1b3a2e49 JB |
3149 | ieee80211_sta_process_chanswitch(sdata, |
3150 | rx_status->mactime, | |
3151 | &elems); | |
3152 | } else if (mgmt->u.action.category == WLAN_CATEGORY_PUBLIC) { | |
3153 | ies_len = skb->len - | |
3154 | offsetof(struct ieee80211_mgmt, | |
3155 | u.action.u.ext_chan_switch.variable); | |
3156 | ||
3157 | if (ies_len < 0) | |
3158 | break; | |
3159 | ||
3160 | ieee802_11_parse_elems( | |
3161 | mgmt->u.action.u.ext_chan_switch.variable, | |
3162 | ies_len, &elems); | |
3163 | ||
3164 | if (elems.parse_error) | |
3165 | break; | |
3166 | ||
3167 | /* for the handling code pretend this was also an IE */ | |
3168 | elems.ext_chansw_ie = | |
3169 | &mgmt->u.action.u.ext_chan_switch.data; | |
3170 | ||
66e67e41 | 3171 | ieee80211_sta_process_chanswitch(sdata, |
37799e52 JB |
3172 | rx_status->mactime, |
3173 | &elems); | |
77fdaa12 | 3174 | } |
37799e52 | 3175 | break; |
77fdaa12 | 3176 | } |
77fdaa12 JB |
3177 | mutex_unlock(&ifmgd->mtx); |
3178 | ||
66e67e41 JB |
3179 | switch (rma) { |
3180 | case RX_MGMT_NONE: | |
3181 | /* no action */ | |
3182 | break; | |
3183 | case RX_MGMT_CFG80211_DEAUTH: | |
ce470613 | 3184 | cfg80211_send_deauth(sdata->dev, (u8 *)mgmt, skb->len); |
66e67e41 JB |
3185 | break; |
3186 | case RX_MGMT_CFG80211_DISASSOC: | |
3187 | cfg80211_send_disassoc(sdata->dev, (u8 *)mgmt, skb->len); | |
3188 | break; | |
3189 | case RX_MGMT_CFG80211_RX_AUTH: | |
3190 | cfg80211_send_rx_auth(sdata->dev, (u8 *)mgmt, skb->len); | |
3191 | break; | |
3192 | case RX_MGMT_CFG80211_RX_ASSOC: | |
3193 | cfg80211_send_rx_assoc(sdata->dev, bss, (u8 *)mgmt, skb->len); | |
3194 | break; | |
3195 | case RX_MGMT_CFG80211_ASSOC_TIMEOUT: | |
3196 | cfg80211_send_assoc_timeout(sdata->dev, mgmt->bssid); | |
3197 | break; | |
30eb1dc2 JB |
3198 | case RX_MGMT_CFG80211_TX_DEAUTH: |
3199 | cfg80211_send_deauth(sdata->dev, deauth_buf, | |
3200 | sizeof(deauth_buf)); | |
3201 | break; | |
66e67e41 JB |
3202 | default: |
3203 | WARN(1, "unexpected: %d", rma); | |
b054b747 | 3204 | } |
f0706e82 JB |
3205 | } |
3206 | ||
9c6bd790 | 3207 | static void ieee80211_sta_timer(unsigned long data) |
f0706e82 | 3208 | { |
60f8b39c JB |
3209 | struct ieee80211_sub_if_data *sdata = |
3210 | (struct ieee80211_sub_if_data *) data; | |
5bb644a0 | 3211 | |
9b7d72c1 | 3212 | ieee80211_queue_work(&sdata->local->hw, &sdata->work); |
f0706e82 JB |
3213 | } |
3214 | ||
04ac3c0e | 3215 | static void ieee80211_sta_connection_lost(struct ieee80211_sub_if_data *sdata, |
6b684db1 | 3216 | u8 *bssid, u8 reason, bool tx) |
04ac3c0e | 3217 | { |
04ac3c0e | 3218 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
6ae16775 | 3219 | u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN]; |
04ac3c0e | 3220 | |
37ad3888 | 3221 | ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, reason, |
6b684db1 | 3222 | tx, frame_buf); |
04ac3c0e | 3223 | mutex_unlock(&ifmgd->mtx); |
37ad3888 | 3224 | |
04ac3c0e FF |
3225 | /* |
3226 | * must be outside lock due to cfg80211, | |
3227 | * but that's not a problem. | |
3228 | */ | |
6ae16775 | 3229 | cfg80211_send_deauth(sdata->dev, frame_buf, IEEE80211_DEAUTH_FRAME_LEN); |
fcac4fb0 | 3230 | |
04ac3c0e FF |
3231 | mutex_lock(&ifmgd->mtx); |
3232 | } | |
3233 | ||
66e67e41 JB |
3234 | static int ieee80211_probe_auth(struct ieee80211_sub_if_data *sdata) |
3235 | { | |
3236 | struct ieee80211_local *local = sdata->local; | |
3237 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
3238 | struct ieee80211_mgd_auth_data *auth_data = ifmgd->auth_data; | |
1672c0e3 | 3239 | u32 tx_flags = 0; |
66e67e41 JB |
3240 | |
3241 | lockdep_assert_held(&ifmgd->mtx); | |
3242 | ||
3243 | if (WARN_ON_ONCE(!auth_data)) | |
3244 | return -EINVAL; | |
3245 | ||
1672c0e3 JB |
3246 | if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) |
3247 | tx_flags = IEEE80211_TX_CTL_REQ_TX_STATUS | | |
3248 | IEEE80211_TX_INTFL_MLME_CONN_TX; | |
3249 | ||
66e67e41 JB |
3250 | auth_data->tries++; |
3251 | ||
3252 | if (auth_data->tries > IEEE80211_AUTH_MAX_TRIES) { | |
bdcbd8e0 JB |
3253 | sdata_info(sdata, "authentication with %pM timed out\n", |
3254 | auth_data->bss->bssid); | |
66e67e41 JB |
3255 | |
3256 | /* | |
3257 | * Most likely AP is not in the range so remove the | |
3258 | * bss struct for that AP. | |
3259 | */ | |
3260 | cfg80211_unlink_bss(local->hw.wiphy, auth_data->bss); | |
3261 | ||
3262 | return -ETIMEDOUT; | |
3263 | } | |
3264 | ||
a1845fc7 JB |
3265 | drv_mgd_prepare_tx(local, sdata); |
3266 | ||
66e67e41 | 3267 | if (auth_data->bss->proberesp_ies) { |
6b8ece3a JM |
3268 | u16 trans = 1; |
3269 | u16 status = 0; | |
3270 | ||
bdcbd8e0 JB |
3271 | sdata_info(sdata, "send auth to %pM (try %d/%d)\n", |
3272 | auth_data->bss->bssid, auth_data->tries, | |
3273 | IEEE80211_AUTH_MAX_TRIES); | |
66e67e41 JB |
3274 | |
3275 | auth_data->expected_transaction = 2; | |
6b8ece3a JM |
3276 | |
3277 | if (auth_data->algorithm == WLAN_AUTH_SAE) { | |
3278 | trans = auth_data->sae_trans; | |
3279 | status = auth_data->sae_status; | |
3280 | auth_data->expected_transaction = trans; | |
3281 | } | |
3282 | ||
3283 | ieee80211_send_auth(sdata, trans, auth_data->algorithm, status, | |
3284 | auth_data->data, auth_data->data_len, | |
66e67e41 | 3285 | auth_data->bss->bssid, |
1672c0e3 JB |
3286 | auth_data->bss->bssid, NULL, 0, 0, |
3287 | tx_flags); | |
66e67e41 JB |
3288 | } else { |
3289 | const u8 *ssidie; | |
3290 | ||
bdcbd8e0 JB |
3291 | sdata_info(sdata, "direct probe to %pM (try %d/%i)\n", |
3292 | auth_data->bss->bssid, auth_data->tries, | |
3293 | IEEE80211_AUTH_MAX_TRIES); | |
66e67e41 | 3294 | |
9caf0364 | 3295 | rcu_read_lock(); |
66e67e41 | 3296 | ssidie = ieee80211_bss_get_ie(auth_data->bss, WLAN_EID_SSID); |
9caf0364 JB |
3297 | if (!ssidie) { |
3298 | rcu_read_unlock(); | |
66e67e41 | 3299 | return -EINVAL; |
9caf0364 | 3300 | } |
66e67e41 JB |
3301 | /* |
3302 | * Direct probe is sent to broadcast address as some APs | |
3303 | * will not answer to direct packet in unassociated state. | |
3304 | */ | |
3305 | ieee80211_send_probe_req(sdata, NULL, ssidie + 2, ssidie[1], | |
1672c0e3 | 3306 | NULL, 0, (u32) -1, true, tx_flags, |
55de908a | 3307 | auth_data->bss->channel, false); |
9caf0364 | 3308 | rcu_read_unlock(); |
66e67e41 JB |
3309 | } |
3310 | ||
1672c0e3 JB |
3311 | if (!(local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)) { |
3312 | auth_data->timeout = jiffies + IEEE80211_AUTH_TIMEOUT; | |
89afe614 | 3313 | ifmgd->auth_data->timeout_started = true; |
1672c0e3 | 3314 | run_again(ifmgd, auth_data->timeout); |
89afe614 JB |
3315 | } else { |
3316 | auth_data->timeout_started = false; | |
1672c0e3 | 3317 | } |
66e67e41 JB |
3318 | |
3319 | return 0; | |
3320 | } | |
3321 | ||
3322 | static int ieee80211_do_assoc(struct ieee80211_sub_if_data *sdata) | |
3323 | { | |
3324 | struct ieee80211_mgd_assoc_data *assoc_data = sdata->u.mgd.assoc_data; | |
3325 | struct ieee80211_local *local = sdata->local; | |
3326 | ||
3327 | lockdep_assert_held(&sdata->u.mgd.mtx); | |
3328 | ||
66e67e41 JB |
3329 | assoc_data->tries++; |
3330 | if (assoc_data->tries > IEEE80211_ASSOC_MAX_TRIES) { | |
bdcbd8e0 JB |
3331 | sdata_info(sdata, "association with %pM timed out\n", |
3332 | assoc_data->bss->bssid); | |
66e67e41 JB |
3333 | |
3334 | /* | |
3335 | * Most likely AP is not in the range so remove the | |
3336 | * bss struct for that AP. | |
3337 | */ | |
3338 | cfg80211_unlink_bss(local->hw.wiphy, assoc_data->bss); | |
3339 | ||
3340 | return -ETIMEDOUT; | |
3341 | } | |
3342 | ||
bdcbd8e0 JB |
3343 | sdata_info(sdata, "associate with %pM (try %d/%d)\n", |
3344 | assoc_data->bss->bssid, assoc_data->tries, | |
3345 | IEEE80211_ASSOC_MAX_TRIES); | |
66e67e41 JB |
3346 | ieee80211_send_assoc(sdata); |
3347 | ||
1672c0e3 JB |
3348 | if (!(local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)) { |
3349 | assoc_data->timeout = jiffies + IEEE80211_ASSOC_TIMEOUT; | |
89afe614 | 3350 | assoc_data->timeout_started = true; |
1672c0e3 | 3351 | run_again(&sdata->u.mgd, assoc_data->timeout); |
89afe614 JB |
3352 | } else { |
3353 | assoc_data->timeout_started = false; | |
1672c0e3 | 3354 | } |
66e67e41 JB |
3355 | |
3356 | return 0; | |
3357 | } | |
3358 | ||
1672c0e3 JB |
3359 | void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata, |
3360 | __le16 fc, bool acked) | |
3361 | { | |
3362 | struct ieee80211_local *local = sdata->local; | |
3363 | ||
3364 | sdata->u.mgd.status_fc = fc; | |
3365 | sdata->u.mgd.status_acked = acked; | |
3366 | sdata->u.mgd.status_received = true; | |
3367 | ||
3368 | ieee80211_queue_work(&local->hw, &sdata->work); | |
3369 | } | |
3370 | ||
1fa57d01 | 3371 | void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata) |
9c6bd790 | 3372 | { |
9c6bd790 | 3373 | struct ieee80211_local *local = sdata->local; |
1fa57d01 | 3374 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
9c6bd790 | 3375 | |
77fdaa12 JB |
3376 | mutex_lock(&ifmgd->mtx); |
3377 | ||
1672c0e3 JB |
3378 | if (ifmgd->status_received) { |
3379 | __le16 fc = ifmgd->status_fc; | |
3380 | bool status_acked = ifmgd->status_acked; | |
3381 | ||
3382 | ifmgd->status_received = false; | |
3383 | if (ifmgd->auth_data && | |
3384 | (ieee80211_is_probe_req(fc) || ieee80211_is_auth(fc))) { | |
3385 | if (status_acked) { | |
3386 | ifmgd->auth_data->timeout = | |
3387 | jiffies + IEEE80211_AUTH_TIMEOUT_SHORT; | |
3388 | run_again(ifmgd, ifmgd->auth_data->timeout); | |
3389 | } else { | |
3390 | ifmgd->auth_data->timeout = jiffies - 1; | |
3391 | } | |
89afe614 | 3392 | ifmgd->auth_data->timeout_started = true; |
1672c0e3 JB |
3393 | } else if (ifmgd->assoc_data && |
3394 | (ieee80211_is_assoc_req(fc) || | |
3395 | ieee80211_is_reassoc_req(fc))) { | |
3396 | if (status_acked) { | |
3397 | ifmgd->assoc_data->timeout = | |
3398 | jiffies + IEEE80211_ASSOC_TIMEOUT_SHORT; | |
3399 | run_again(ifmgd, ifmgd->assoc_data->timeout); | |
3400 | } else { | |
3401 | ifmgd->assoc_data->timeout = jiffies - 1; | |
3402 | } | |
89afe614 | 3403 | ifmgd->assoc_data->timeout_started = true; |
1672c0e3 JB |
3404 | } |
3405 | } | |
3406 | ||
89afe614 | 3407 | if (ifmgd->auth_data && ifmgd->auth_data->timeout_started && |
66e67e41 JB |
3408 | time_after(jiffies, ifmgd->auth_data->timeout)) { |
3409 | if (ifmgd->auth_data->done) { | |
3410 | /* | |
3411 | * ok ... we waited for assoc but userspace didn't, | |
3412 | * so let's just kill the auth data | |
3413 | */ | |
3414 | ieee80211_destroy_auth_data(sdata, false); | |
3415 | } else if (ieee80211_probe_auth(sdata)) { | |
3416 | u8 bssid[ETH_ALEN]; | |
3417 | ||
3418 | memcpy(bssid, ifmgd->auth_data->bss->bssid, ETH_ALEN); | |
3419 | ||
3420 | ieee80211_destroy_auth_data(sdata, false); | |
3421 | ||
3422 | mutex_unlock(&ifmgd->mtx); | |
3423 | cfg80211_send_auth_timeout(sdata->dev, bssid); | |
3424 | mutex_lock(&ifmgd->mtx); | |
3425 | } | |
89afe614 | 3426 | } else if (ifmgd->auth_data && ifmgd->auth_data->timeout_started) |
66e67e41 JB |
3427 | run_again(ifmgd, ifmgd->auth_data->timeout); |
3428 | ||
89afe614 | 3429 | if (ifmgd->assoc_data && ifmgd->assoc_data->timeout_started && |
66e67e41 | 3430 | time_after(jiffies, ifmgd->assoc_data->timeout)) { |
c65dd147 EG |
3431 | if ((ifmgd->assoc_data->need_beacon && |
3432 | !ifmgd->assoc_data->have_beacon) || | |
66e67e41 JB |
3433 | ieee80211_do_assoc(sdata)) { |
3434 | u8 bssid[ETH_ALEN]; | |
3435 | ||
3436 | memcpy(bssid, ifmgd->assoc_data->bss->bssid, ETH_ALEN); | |
3437 | ||
3438 | ieee80211_destroy_assoc_data(sdata, false); | |
3439 | ||
3440 | mutex_unlock(&ifmgd->mtx); | |
3441 | cfg80211_send_assoc_timeout(sdata->dev, bssid); | |
3442 | mutex_lock(&ifmgd->mtx); | |
3443 | } | |
89afe614 | 3444 | } else if (ifmgd->assoc_data && ifmgd->assoc_data->timeout_started) |
66e67e41 JB |
3445 | run_again(ifmgd, ifmgd->assoc_data->timeout); |
3446 | ||
b291ba11 JB |
3447 | if (ifmgd->flags & (IEEE80211_STA_BEACON_POLL | |
3448 | IEEE80211_STA_CONNECTION_POLL) && | |
3449 | ifmgd->associated) { | |
a43abf29 | 3450 | u8 bssid[ETH_ALEN]; |
72a8a3ed | 3451 | int max_tries; |
a43abf29 | 3452 | |
0c1ad2ca | 3453 | memcpy(bssid, ifmgd->associated->bssid, ETH_ALEN); |
4e5ff376 | 3454 | |
72a8a3ed | 3455 | if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) |
180205bd | 3456 | max_tries = max_nullfunc_tries; |
72a8a3ed | 3457 | else |
180205bd | 3458 | max_tries = max_probe_tries; |
72a8a3ed | 3459 | |
4e5ff376 FF |
3460 | /* ACK received for nullfunc probing frame */ |
3461 | if (!ifmgd->probe_send_count) | |
3462 | ieee80211_reset_ap_probe(sdata); | |
04ac3c0e FF |
3463 | else if (ifmgd->nullfunc_failed) { |
3464 | if (ifmgd->probe_send_count < max_tries) { | |
bdcbd8e0 JB |
3465 | mlme_dbg(sdata, |
3466 | "No ack for nullfunc frame to AP %pM, try %d/%i\n", | |
3467 | bssid, ifmgd->probe_send_count, | |
3468 | max_tries); | |
04ac3c0e FF |
3469 | ieee80211_mgd_probe_ap_send(sdata); |
3470 | } else { | |
bdcbd8e0 JB |
3471 | mlme_dbg(sdata, |
3472 | "No ack for nullfunc frame to AP %pM, disconnecting.\n", | |
3473 | bssid); | |
95acac61 | 3474 | ieee80211_sta_connection_lost(sdata, bssid, |
6b684db1 JB |
3475 | WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, |
3476 | false); | |
04ac3c0e FF |
3477 | } |
3478 | } else if (time_is_after_jiffies(ifmgd->probe_timeout)) | |
b291ba11 | 3479 | run_again(ifmgd, ifmgd->probe_timeout); |
04ac3c0e | 3480 | else if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) { |
bdcbd8e0 JB |
3481 | mlme_dbg(sdata, |
3482 | "Failed to send nullfunc to AP %pM after %dms, disconnecting\n", | |
3483 | bssid, probe_wait_ms); | |
95acac61 | 3484 | ieee80211_sta_connection_lost(sdata, bssid, |
6b684db1 | 3485 | WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, false); |
04ac3c0e | 3486 | } else if (ifmgd->probe_send_count < max_tries) { |
bdcbd8e0 JB |
3487 | mlme_dbg(sdata, |
3488 | "No probe response from AP %pM after %dms, try %d/%i\n", | |
3489 | bssid, probe_wait_ms, | |
3490 | ifmgd->probe_send_count, max_tries); | |
a43abf29 ML |
3491 | ieee80211_mgd_probe_ap_send(sdata); |
3492 | } else { | |
b291ba11 JB |
3493 | /* |
3494 | * We actually lost the connection ... or did we? | |
3495 | * Let's make sure! | |
3496 | */ | |
b38afa87 BG |
3497 | wiphy_debug(local->hw.wiphy, |
3498 | "%s: No probe response from AP %pM" | |
3499 | " after %dms, disconnecting.\n", | |
3500 | sdata->name, | |
180205bd | 3501 | bssid, probe_wait_ms); |
04ac3c0e | 3502 | |
95acac61 | 3503 | ieee80211_sta_connection_lost(sdata, bssid, |
6b684db1 | 3504 | WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, false); |
b291ba11 JB |
3505 | } |
3506 | } | |
3507 | ||
77fdaa12 | 3508 | mutex_unlock(&ifmgd->mtx); |
f0706e82 JB |
3509 | } |
3510 | ||
b291ba11 JB |
3511 | static void ieee80211_sta_bcn_mon_timer(unsigned long data) |
3512 | { | |
3513 | struct ieee80211_sub_if_data *sdata = | |
3514 | (struct ieee80211_sub_if_data *) data; | |
3515 | struct ieee80211_local *local = sdata->local; | |
3516 | ||
3517 | if (local->quiescing) | |
3518 | return; | |
3519 | ||
682bd38b | 3520 | sdata->u.mgd.connection_loss = false; |
1e4dcd01 JO |
3521 | ieee80211_queue_work(&sdata->local->hw, |
3522 | &sdata->u.mgd.beacon_connection_loss_work); | |
b291ba11 JB |
3523 | } |
3524 | ||
3525 | static void ieee80211_sta_conn_mon_timer(unsigned long data) | |
3526 | { | |
3527 | struct ieee80211_sub_if_data *sdata = | |
3528 | (struct ieee80211_sub_if_data *) data; | |
3529 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
3530 | struct ieee80211_local *local = sdata->local; | |
3531 | ||
3532 | if (local->quiescing) | |
3533 | return; | |
3534 | ||
42935eca | 3535 | ieee80211_queue_work(&local->hw, &ifmgd->monitor_work); |
b291ba11 JB |
3536 | } |
3537 | ||
3538 | static void ieee80211_sta_monitor_work(struct work_struct *work) | |
3539 | { | |
3540 | struct ieee80211_sub_if_data *sdata = | |
3541 | container_of(work, struct ieee80211_sub_if_data, | |
3542 | u.mgd.monitor_work); | |
3543 | ||
3544 | ieee80211_mgd_probe_ap(sdata, false); | |
3545 | } | |
3546 | ||
9c6bd790 JB |
3547 | static void ieee80211_restart_sta_timer(struct ieee80211_sub_if_data *sdata) |
3548 | { | |
494f1fe5 EP |
3549 | u32 flags; |
3550 | ||
ad935687 | 3551 | if (sdata->vif.type == NL80211_IFTYPE_STATION) { |
925e64c3 | 3552 | __ieee80211_stop_poll(sdata); |
ad935687 | 3553 | |
b291ba11 | 3554 | /* let's probe the connection once */ |
494f1fe5 EP |
3555 | flags = sdata->local->hw.flags; |
3556 | if (!(flags & IEEE80211_HW_CONNECTION_MONITOR)) | |
3557 | ieee80211_queue_work(&sdata->local->hw, | |
3558 | &sdata->u.mgd.monitor_work); | |
b291ba11 | 3559 | /* and do all the other regular work too */ |
64592c8f | 3560 | ieee80211_queue_work(&sdata->local->hw, &sdata->work); |
ad935687 | 3561 | } |
9c6bd790 | 3562 | } |
f0706e82 | 3563 | |
9c6bd790 JB |
3564 | /* interface setup */ |
3565 | void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata) | |
f0706e82 | 3566 | { |
46900298 | 3567 | struct ieee80211_if_managed *ifmgd; |
988c0f72 | 3568 | |
46900298 | 3569 | ifmgd = &sdata->u.mgd; |
b291ba11 | 3570 | INIT_WORK(&ifmgd->monitor_work, ieee80211_sta_monitor_work); |
46900298 | 3571 | INIT_WORK(&ifmgd->chswitch_work, ieee80211_chswitch_work); |
1e4dcd01 JO |
3572 | INIT_WORK(&ifmgd->beacon_connection_loss_work, |
3573 | ieee80211_beacon_connection_loss_work); | |
882a7c69 JB |
3574 | INIT_WORK(&ifmgd->csa_connection_drop_work, |
3575 | ieee80211_csa_connection_drop_work); | |
d1f5b7a3 | 3576 | INIT_WORK(&ifmgd->request_smps_work, ieee80211_request_smps_work); |
46900298 | 3577 | setup_timer(&ifmgd->timer, ieee80211_sta_timer, |
c481ec97 | 3578 | (unsigned long) sdata); |
b291ba11 JB |
3579 | setup_timer(&ifmgd->bcn_mon_timer, ieee80211_sta_bcn_mon_timer, |
3580 | (unsigned long) sdata); | |
3581 | setup_timer(&ifmgd->conn_mon_timer, ieee80211_sta_conn_mon_timer, | |
3582 | (unsigned long) sdata); | |
46900298 | 3583 | setup_timer(&ifmgd->chswitch_timer, ieee80211_chswitch_timer, |
9c6bd790 | 3584 | (unsigned long) sdata); |
9c6bd790 | 3585 | |
ab1faead | 3586 | ifmgd->flags = 0; |
1478acb3 | 3587 | ifmgd->powersave = sdata->wdev.ps; |
219c3867 AB |
3588 | ifmgd->uapsd_queues = sdata->local->hw.uapsd_queues; |
3589 | ifmgd->uapsd_max_sp_len = sdata->local->hw.uapsd_max_sp_len; | |
67baf663 | 3590 | ifmgd->p2p_noa_index = -1; |
bbbdff9e | 3591 | |
77fdaa12 | 3592 | mutex_init(&ifmgd->mtx); |
0f78231b JB |
3593 | |
3594 | if (sdata->local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS) | |
3595 | ifmgd->req_smps = IEEE80211_SMPS_AUTOMATIC; | |
3596 | else | |
3597 | ifmgd->req_smps = IEEE80211_SMPS_OFF; | |
f0706e82 JB |
3598 | } |
3599 | ||
77fdaa12 JB |
3600 | /* scan finished notification */ |
3601 | void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local) | |
60f8b39c | 3602 | { |
31ee67a1 | 3603 | struct ieee80211_sub_if_data *sdata; |
60f8b39c | 3604 | |
77fdaa12 JB |
3605 | /* Restart STA timers */ |
3606 | rcu_read_lock(); | |
3607 | list_for_each_entry_rcu(sdata, &local->interfaces, list) | |
3608 | ieee80211_restart_sta_timer(sdata); | |
3609 | rcu_read_unlock(); | |
3610 | } | |
60f8b39c | 3611 | |
77fdaa12 JB |
3612 | int ieee80211_max_network_latency(struct notifier_block *nb, |
3613 | unsigned long data, void *dummy) | |
3614 | { | |
3615 | s32 latency_usec = (s32) data; | |
3616 | struct ieee80211_local *local = | |
3617 | container_of(nb, struct ieee80211_local, | |
3618 | network_latency_notifier); | |
1fa6f4af | 3619 | |
77fdaa12 JB |
3620 | mutex_lock(&local->iflist_mtx); |
3621 | ieee80211_recalc_ps(local, latency_usec); | |
3622 | mutex_unlock(&local->iflist_mtx); | |
dfe67012 | 3623 | |
77fdaa12 | 3624 | return 0; |
9c6bd790 JB |
3625 | } |
3626 | ||
f2d9d270 JB |
3627 | static u8 ieee80211_ht_vht_rx_chains(struct ieee80211_sub_if_data *sdata, |
3628 | struct cfg80211_bss *cbss) | |
3629 | { | |
3630 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
3631 | const u8 *ht_cap_ie, *vht_cap_ie; | |
3632 | const struct ieee80211_ht_cap *ht_cap; | |
3633 | const struct ieee80211_vht_cap *vht_cap; | |
3634 | u8 chains = 1; | |
3635 | ||
3636 | if (ifmgd->flags & IEEE80211_STA_DISABLE_HT) | |
3637 | return chains; | |
3638 | ||
9caf0364 | 3639 | ht_cap_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_HT_CAPABILITY); |
f2d9d270 JB |
3640 | if (ht_cap_ie && ht_cap_ie[1] >= sizeof(*ht_cap)) { |
3641 | ht_cap = (void *)(ht_cap_ie + 2); | |
3642 | chains = ieee80211_mcs_to_chains(&ht_cap->mcs); | |
3643 | /* | |
3644 | * TODO: use "Tx Maximum Number Spatial Streams Supported" and | |
3645 | * "Tx Unequal Modulation Supported" fields. | |
3646 | */ | |
3647 | } | |
3648 | ||
3649 | if (ifmgd->flags & IEEE80211_STA_DISABLE_VHT) | |
3650 | return chains; | |
3651 | ||
9caf0364 | 3652 | vht_cap_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_VHT_CAPABILITY); |
f2d9d270 JB |
3653 | if (vht_cap_ie && vht_cap_ie[1] >= sizeof(*vht_cap)) { |
3654 | u8 nss; | |
3655 | u16 tx_mcs_map; | |
3656 | ||
3657 | vht_cap = (void *)(vht_cap_ie + 2); | |
3658 | tx_mcs_map = le16_to_cpu(vht_cap->supp_mcs.tx_mcs_map); | |
3659 | for (nss = 8; nss > 0; nss--) { | |
3660 | if (((tx_mcs_map >> (2 * (nss - 1))) & 3) != | |
3661 | IEEE80211_VHT_MCS_NOT_SUPPORTED) | |
3662 | break; | |
3663 | } | |
3664 | /* TODO: use "Tx Highest Supported Long GI Data Rate" field? */ | |
3665 | chains = max(chains, nss); | |
3666 | } | |
3667 | ||
3668 | return chains; | |
3669 | } | |
3670 | ||
b17166a7 JB |
3671 | static int ieee80211_prep_channel(struct ieee80211_sub_if_data *sdata, |
3672 | struct cfg80211_bss *cbss) | |
a1cf775d JB |
3673 | { |
3674 | struct ieee80211_local *local = sdata->local; | |
3675 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
24398e39 | 3676 | const struct ieee80211_ht_operation *ht_oper = NULL; |
f2d9d270 | 3677 | const struct ieee80211_vht_operation *vht_oper = NULL; |
24398e39 | 3678 | struct ieee80211_supported_band *sband; |
4bf88530 | 3679 | struct cfg80211_chan_def chandef; |
f2d9d270 | 3680 | int ret; |
a1cf775d | 3681 | |
24398e39 JB |
3682 | sband = local->hw.wiphy->bands[cbss->channel->band]; |
3683 | ||
f2d9d270 JB |
3684 | ifmgd->flags &= ~(IEEE80211_STA_DISABLE_40MHZ | |
3685 | IEEE80211_STA_DISABLE_80P80MHZ | | |
3686 | IEEE80211_STA_DISABLE_160MHZ); | |
3687 | ||
9caf0364 JB |
3688 | rcu_read_lock(); |
3689 | ||
f2d9d270 JB |
3690 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT) && |
3691 | sband->ht_cap.ht_supported) { | |
08e6effa | 3692 | const u8 *ht_oper_ie, *ht_cap; |
24398e39 | 3693 | |
9caf0364 | 3694 | ht_oper_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_HT_OPERATION); |
24398e39 JB |
3695 | if (ht_oper_ie && ht_oper_ie[1] >= sizeof(*ht_oper)) |
3696 | ht_oper = (void *)(ht_oper_ie + 2); | |
08e6effa JB |
3697 | |
3698 | ht_cap = ieee80211_bss_get_ie(cbss, WLAN_EID_HT_CAPABILITY); | |
3699 | if (!ht_cap || ht_cap[1] < sizeof(struct ieee80211_ht_cap)) { | |
3700 | ifmgd->flags |= IEEE80211_STA_DISABLE_HT; | |
3701 | ht_oper = NULL; | |
3702 | } | |
24398e39 JB |
3703 | } |
3704 | ||
f2d9d270 JB |
3705 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) && |
3706 | sband->vht_cap.vht_supported) { | |
08e6effa | 3707 | const u8 *vht_oper_ie, *vht_cap; |
f2d9d270 | 3708 | |
9caf0364 JB |
3709 | vht_oper_ie = ieee80211_bss_get_ie(cbss, |
3710 | WLAN_EID_VHT_OPERATION); | |
f2d9d270 JB |
3711 | if (vht_oper_ie && vht_oper_ie[1] >= sizeof(*vht_oper)) |
3712 | vht_oper = (void *)(vht_oper_ie + 2); | |
3713 | if (vht_oper && !ht_oper) { | |
3714 | vht_oper = NULL; | |
bdcbd8e0 | 3715 | sdata_info(sdata, |
f2d9d270 | 3716 | "AP advertised VHT without HT, disabling both\n"); |
cb145022 JB |
3717 | ifmgd->flags |= IEEE80211_STA_DISABLE_HT; |
3718 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; | |
24398e39 | 3719 | } |
08e6effa JB |
3720 | |
3721 | vht_cap = ieee80211_bss_get_ie(cbss, WLAN_EID_VHT_CAPABILITY); | |
3722 | if (!vht_cap || vht_cap[1] < sizeof(struct ieee80211_vht_cap)) { | |
3723 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; | |
3724 | vht_oper = NULL; | |
3725 | } | |
24398e39 JB |
3726 | } |
3727 | ||
f2d9d270 JB |
3728 | ifmgd->flags |= ieee80211_determine_chantype(sdata, sband, |
3729 | cbss->channel, | |
3730 | ht_oper, vht_oper, | |
30eb1dc2 | 3731 | &chandef, true); |
04ecd257 | 3732 | |
f2d9d270 JB |
3733 | sdata->needed_rx_chains = min(ieee80211_ht_vht_rx_chains(sdata, cbss), |
3734 | local->rx_chains); | |
24398e39 | 3735 | |
9caf0364 JB |
3736 | rcu_read_unlock(); |
3737 | ||
04ecd257 JB |
3738 | /* will change later if needed */ |
3739 | sdata->smps_mode = IEEE80211_SMPS_OFF; | |
3740 | ||
f2d9d270 JB |
3741 | /* |
3742 | * If this fails (possibly due to channel context sharing | |
3743 | * on incompatible channels, e.g. 80+80 and 160 sharing the | |
3744 | * same control channel) try to use a smaller bandwidth. | |
3745 | */ | |
3746 | ret = ieee80211_vif_use_channel(sdata, &chandef, | |
3747 | IEEE80211_CHANCTX_SHARED); | |
d601cd8d | 3748 | while (ret && chandef.width != NL80211_CHAN_WIDTH_20_NOHT) { |
f2d9d270 | 3749 | ifmgd->flags |= chandef_downgrade(&chandef); |
d601cd8d JB |
3750 | ret = ieee80211_vif_use_channel(sdata, &chandef, |
3751 | IEEE80211_CHANCTX_SHARED); | |
3752 | } | |
f2d9d270 | 3753 | return ret; |
b17166a7 JB |
3754 | } |
3755 | ||
3756 | static int ieee80211_prep_connection(struct ieee80211_sub_if_data *sdata, | |
3757 | struct cfg80211_bss *cbss, bool assoc) | |
3758 | { | |
3759 | struct ieee80211_local *local = sdata->local; | |
3760 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
3761 | struct ieee80211_bss *bss = (void *)cbss->priv; | |
3762 | struct sta_info *new_sta = NULL; | |
3763 | bool have_sta = false; | |
3764 | int err; | |
3765 | ||
3766 | if (WARN_ON(!ifmgd->auth_data && !ifmgd->assoc_data)) | |
3767 | return -EINVAL; | |
3768 | ||
3769 | if (assoc) { | |
3770 | rcu_read_lock(); | |
3771 | have_sta = sta_info_get(sdata, cbss->bssid); | |
3772 | rcu_read_unlock(); | |
3773 | } | |
3774 | ||
3775 | if (!have_sta) { | |
3776 | new_sta = sta_info_alloc(sdata, cbss->bssid, GFP_KERNEL); | |
3777 | if (!new_sta) | |
3778 | return -ENOMEM; | |
3779 | } | |
3780 | ||
13e0c8e3 | 3781 | if (new_sta) { |
5d6a1b06 JB |
3782 | u32 rates = 0, basic_rates = 0; |
3783 | bool have_higher_than_11mbit; | |
3784 | int min_rate = INT_MAX, min_rate_index = -1; | |
b17166a7 | 3785 | struct ieee80211_supported_band *sband; |
8cef2c9d | 3786 | const struct cfg80211_bss_ies *ies; |
b17166a7 JB |
3787 | |
3788 | sband = local->hw.wiphy->bands[cbss->channel->band]; | |
3789 | ||
3790 | err = ieee80211_prep_channel(sdata, cbss); | |
3791 | if (err) { | |
3792 | sta_info_free(local, new_sta); | |
3793 | return err; | |
3794 | } | |
5d6a1b06 | 3795 | |
5d6a1b06 JB |
3796 | ieee80211_get_rates(sband, bss->supp_rates, |
3797 | bss->supp_rates_len, | |
3798 | &rates, &basic_rates, | |
3799 | &have_higher_than_11mbit, | |
3800 | &min_rate, &min_rate_index); | |
3801 | ||
3802 | /* | |
3803 | * This used to be a workaround for basic rates missing | |
3804 | * in the association response frame. Now that we no | |
3805 | * longer use the basic rates from there, it probably | |
3806 | * doesn't happen any more, but keep the workaround so | |
3807 | * in case some *other* APs are buggy in different ways | |
3808 | * we can connect -- with a warning. | |
3809 | */ | |
3810 | if (!basic_rates && min_rate_index >= 0) { | |
bdcbd8e0 JB |
3811 | sdata_info(sdata, |
3812 | "No basic rates, using min rate instead\n"); | |
5d6a1b06 JB |
3813 | basic_rates = BIT(min_rate_index); |
3814 | } | |
3815 | ||
13e0c8e3 | 3816 | new_sta->sta.supp_rates[cbss->channel->band] = rates; |
5d6a1b06 JB |
3817 | sdata->vif.bss_conf.basic_rates = basic_rates; |
3818 | ||
3819 | /* cf. IEEE 802.11 9.2.12 */ | |
55de908a | 3820 | if (cbss->channel->band == IEEE80211_BAND_2GHZ && |
5d6a1b06 JB |
3821 | have_higher_than_11mbit) |
3822 | sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE; | |
3823 | else | |
3824 | sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE; | |
3825 | ||
3826 | memcpy(ifmgd->bssid, cbss->bssid, ETH_ALEN); | |
3827 | ||
8c358bcd JB |
3828 | /* set timing information */ |
3829 | sdata->vif.bss_conf.beacon_int = cbss->beacon_interval; | |
8cef2c9d | 3830 | rcu_read_lock(); |
ef429dad JB |
3831 | ies = rcu_dereference(cbss->beacon_ies); |
3832 | if (ies) { | |
3833 | const u8 *tim_ie; | |
3834 | ||
3835 | sdata->vif.bss_conf.sync_tsf = ies->tsf; | |
3836 | sdata->vif.bss_conf.sync_device_ts = | |
3837 | bss->device_ts_beacon; | |
3838 | tim_ie = cfg80211_find_ie(WLAN_EID_TIM, | |
3839 | ies->data, ies->len); | |
3840 | if (tim_ie && tim_ie[1] >= 2) | |
3841 | sdata->vif.bss_conf.sync_dtim_count = tim_ie[2]; | |
3842 | else | |
3843 | sdata->vif.bss_conf.sync_dtim_count = 0; | |
3844 | } else if (!(local->hw.flags & | |
3845 | IEEE80211_HW_TIMING_BEACON_ONLY)) { | |
3846 | ies = rcu_dereference(cbss->proberesp_ies); | |
3847 | /* must be non-NULL since beacon IEs were NULL */ | |
3848 | sdata->vif.bss_conf.sync_tsf = ies->tsf; | |
3849 | sdata->vif.bss_conf.sync_device_ts = | |
3850 | bss->device_ts_presp; | |
3851 | sdata->vif.bss_conf.sync_dtim_count = 0; | |
3852 | } else { | |
3853 | sdata->vif.bss_conf.sync_tsf = 0; | |
3854 | sdata->vif.bss_conf.sync_device_ts = 0; | |
3855 | sdata->vif.bss_conf.sync_dtim_count = 0; | |
3856 | } | |
8cef2c9d | 3857 | rcu_read_unlock(); |
8c358bcd JB |
3858 | |
3859 | /* tell driver about BSSID, basic rates and timing */ | |
5d6a1b06 | 3860 | ieee80211_bss_info_change_notify(sdata, |
8c358bcd JB |
3861 | BSS_CHANGED_BSSID | BSS_CHANGED_BASIC_RATES | |
3862 | BSS_CHANGED_BEACON_INT); | |
a1cf775d JB |
3863 | |
3864 | if (assoc) | |
13e0c8e3 | 3865 | sta_info_pre_move_state(new_sta, IEEE80211_STA_AUTH); |
a1cf775d | 3866 | |
13e0c8e3 JB |
3867 | err = sta_info_insert(new_sta); |
3868 | new_sta = NULL; | |
a1cf775d | 3869 | if (err) { |
bdcbd8e0 JB |
3870 | sdata_info(sdata, |
3871 | "failed to insert STA entry for the AP (error %d)\n", | |
3872 | err); | |
a1cf775d JB |
3873 | return err; |
3874 | } | |
3875 | } else | |
b203ca39 | 3876 | WARN_ON_ONCE(!ether_addr_equal(ifmgd->bssid, cbss->bssid)); |
a1cf775d JB |
3877 | |
3878 | return 0; | |
3879 | } | |
3880 | ||
77fdaa12 JB |
3881 | /* config hooks */ |
3882 | int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, | |
3883 | struct cfg80211_auth_request *req) | |
9c6bd790 | 3884 | { |
66e67e41 JB |
3885 | struct ieee80211_local *local = sdata->local; |
3886 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
3887 | struct ieee80211_mgd_auth_data *auth_data; | |
77fdaa12 | 3888 | u16 auth_alg; |
66e67e41 JB |
3889 | int err; |
3890 | ||
3891 | /* prepare auth data structure */ | |
9c6bd790 | 3892 | |
77fdaa12 JB |
3893 | switch (req->auth_type) { |
3894 | case NL80211_AUTHTYPE_OPEN_SYSTEM: | |
3895 | auth_alg = WLAN_AUTH_OPEN; | |
3896 | break; | |
3897 | case NL80211_AUTHTYPE_SHARED_KEY: | |
66e67e41 | 3898 | if (IS_ERR(local->wep_tx_tfm)) |
9dca9c49 | 3899 | return -EOPNOTSUPP; |
77fdaa12 JB |
3900 | auth_alg = WLAN_AUTH_SHARED_KEY; |
3901 | break; | |
3902 | case NL80211_AUTHTYPE_FT: | |
3903 | auth_alg = WLAN_AUTH_FT; | |
3904 | break; | |
3905 | case NL80211_AUTHTYPE_NETWORK_EAP: | |
3906 | auth_alg = WLAN_AUTH_LEAP; | |
3907 | break; | |
6b8ece3a JM |
3908 | case NL80211_AUTHTYPE_SAE: |
3909 | auth_alg = WLAN_AUTH_SAE; | |
3910 | break; | |
77fdaa12 JB |
3911 | default: |
3912 | return -EOPNOTSUPP; | |
60f8b39c | 3913 | } |
77fdaa12 | 3914 | |
6b8ece3a JM |
3915 | auth_data = kzalloc(sizeof(*auth_data) + req->sae_data_len + |
3916 | req->ie_len, GFP_KERNEL); | |
66e67e41 | 3917 | if (!auth_data) |
9c6bd790 | 3918 | return -ENOMEM; |
77fdaa12 | 3919 | |
66e67e41 | 3920 | auth_data->bss = req->bss; |
77fdaa12 | 3921 | |
6b8ece3a JM |
3922 | if (req->sae_data_len >= 4) { |
3923 | __le16 *pos = (__le16 *) req->sae_data; | |
3924 | auth_data->sae_trans = le16_to_cpu(pos[0]); | |
3925 | auth_data->sae_status = le16_to_cpu(pos[1]); | |
3926 | memcpy(auth_data->data, req->sae_data + 4, | |
3927 | req->sae_data_len - 4); | |
3928 | auth_data->data_len += req->sae_data_len - 4; | |
3929 | } | |
3930 | ||
77fdaa12 | 3931 | if (req->ie && req->ie_len) { |
6b8ece3a JM |
3932 | memcpy(&auth_data->data[auth_data->data_len], |
3933 | req->ie, req->ie_len); | |
3934 | auth_data->data_len += req->ie_len; | |
9c6bd790 | 3935 | } |
77fdaa12 | 3936 | |
fffd0934 | 3937 | if (req->key && req->key_len) { |
66e67e41 JB |
3938 | auth_data->key_len = req->key_len; |
3939 | auth_data->key_idx = req->key_idx; | |
3940 | memcpy(auth_data->key, req->key, req->key_len); | |
fffd0934 JB |
3941 | } |
3942 | ||
66e67e41 | 3943 | auth_data->algorithm = auth_alg; |
60f8b39c | 3944 | |
66e67e41 | 3945 | /* try to authenticate/probe */ |
2a33bee2 | 3946 | |
66e67e41 | 3947 | mutex_lock(&ifmgd->mtx); |
2a33bee2 | 3948 | |
66e67e41 JB |
3949 | if ((ifmgd->auth_data && !ifmgd->auth_data->done) || |
3950 | ifmgd->assoc_data) { | |
3951 | err = -EBUSY; | |
3952 | goto err_free; | |
2a33bee2 GE |
3953 | } |
3954 | ||
66e67e41 JB |
3955 | if (ifmgd->auth_data) |
3956 | ieee80211_destroy_auth_data(sdata, false); | |
2a33bee2 | 3957 | |
66e67e41 JB |
3958 | /* prep auth_data so we don't go into idle on disassoc */ |
3959 | ifmgd->auth_data = auth_data; | |
af6b6374 | 3960 | |
66e67e41 | 3961 | if (ifmgd->associated) |
37ad3888 | 3962 | ieee80211_set_disassoc(sdata, 0, 0, false, NULL); |
af6b6374 | 3963 | |
bdcbd8e0 | 3964 | sdata_info(sdata, "authenticate with %pM\n", req->bss->bssid); |
e5b900d2 | 3965 | |
a1cf775d JB |
3966 | err = ieee80211_prep_connection(sdata, req->bss, false); |
3967 | if (err) | |
66e67e41 | 3968 | goto err_clear; |
af6b6374 | 3969 | |
66e67e41 JB |
3970 | err = ieee80211_probe_auth(sdata); |
3971 | if (err) { | |
66e67e41 JB |
3972 | sta_info_destroy_addr(sdata, req->bss->bssid); |
3973 | goto err_clear; | |
3974 | } | |
3975 | ||
3976 | /* hold our own reference */ | |
5b112d3d | 3977 | cfg80211_ref_bss(local->hw.wiphy, auth_data->bss); |
66e67e41 JB |
3978 | err = 0; |
3979 | goto out_unlock; | |
3980 | ||
3981 | err_clear: | |
3d2abdfd EP |
3982 | memset(ifmgd->bssid, 0, ETH_ALEN); |
3983 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID); | |
66e67e41 JB |
3984 | ifmgd->auth_data = NULL; |
3985 | err_free: | |
3986 | kfree(auth_data); | |
3987 | out_unlock: | |
3988 | mutex_unlock(&ifmgd->mtx); | |
b2abb6e2 | 3989 | |
66e67e41 | 3990 | return err; |
af6b6374 JB |
3991 | } |
3992 | ||
77fdaa12 JB |
3993 | int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, |
3994 | struct cfg80211_assoc_request *req) | |
f0706e82 | 3995 | { |
66e67e41 | 3996 | struct ieee80211_local *local = sdata->local; |
77fdaa12 | 3997 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
0c1ad2ca | 3998 | struct ieee80211_bss *bss = (void *)req->bss->priv; |
66e67e41 | 3999 | struct ieee80211_mgd_assoc_data *assoc_data; |
c65dd147 | 4000 | const struct cfg80211_bss_ies *beacon_ies; |
4e74bfdb | 4001 | struct ieee80211_supported_band *sband; |
b08fbbd8 | 4002 | const u8 *ssidie, *ht_ie, *vht_ie; |
2a33bee2 | 4003 | int i, err; |
f0706e82 | 4004 | |
66e67e41 JB |
4005 | assoc_data = kzalloc(sizeof(*assoc_data) + req->ie_len, GFP_KERNEL); |
4006 | if (!assoc_data) | |
4007 | return -ENOMEM; | |
4008 | ||
9caf0364 JB |
4009 | rcu_read_lock(); |
4010 | ssidie = ieee80211_bss_get_ie(req->bss, WLAN_EID_SSID); | |
4011 | if (!ssidie) { | |
4012 | rcu_read_unlock(); | |
4013 | kfree(assoc_data); | |
4014 | return -EINVAL; | |
4015 | } | |
4016 | memcpy(assoc_data->ssid, ssidie + 2, ssidie[1]); | |
4017 | assoc_data->ssid_len = ssidie[1]; | |
4018 | rcu_read_unlock(); | |
4019 | ||
77fdaa12 | 4020 | mutex_lock(&ifmgd->mtx); |
9c87ba67 | 4021 | |
66e67e41 | 4022 | if (ifmgd->associated) |
37ad3888 | 4023 | ieee80211_set_disassoc(sdata, 0, 0, false, NULL); |
66e67e41 JB |
4024 | |
4025 | if (ifmgd->auth_data && !ifmgd->auth_data->done) { | |
4026 | err = -EBUSY; | |
4027 | goto err_free; | |
af6b6374 | 4028 | } |
77fdaa12 | 4029 | |
66e67e41 JB |
4030 | if (ifmgd->assoc_data) { |
4031 | err = -EBUSY; | |
4032 | goto err_free; | |
4033 | } | |
77fdaa12 | 4034 | |
66e67e41 JB |
4035 | if (ifmgd->auth_data) { |
4036 | bool match; | |
4037 | ||
4038 | /* keep sta info, bssid if matching */ | |
b203ca39 | 4039 | match = ether_addr_equal(ifmgd->bssid, req->bss->bssid); |
66e67e41 | 4040 | ieee80211_destroy_auth_data(sdata, match); |
2a33bee2 GE |
4041 | } |
4042 | ||
66e67e41 | 4043 | /* prepare assoc data */ |
19c3b830 | 4044 | |
d8ec4433 JO |
4045 | ifmgd->beacon_crc_valid = false; |
4046 | ||
de5036aa JB |
4047 | /* |
4048 | * IEEE802.11n does not allow TKIP/WEP as pairwise ciphers in HT mode. | |
4049 | * We still associate in non-HT mode (11a/b/g) if any one of these | |
4050 | * ciphers is configured as pairwise. | |
4051 | * We can set this to true for non-11n hardware, that'll be checked | |
4052 | * separately along with the peer capabilities. | |
4053 | */ | |
1c4cb928 | 4054 | for (i = 0; i < req->crypto.n_ciphers_pairwise; i++) { |
77fdaa12 JB |
4055 | if (req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_WEP40 || |
4056 | req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_TKIP || | |
1c4cb928 | 4057 | req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_WEP104) { |
a8243b72 | 4058 | ifmgd->flags |= IEEE80211_STA_DISABLE_HT; |
d545daba | 4059 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; |
1c4cb928 | 4060 | netdev_info(sdata->dev, |
d545daba | 4061 | "disabling HT/VHT due to WEP/TKIP use\n"); |
1c4cb928 JB |
4062 | } |
4063 | } | |
77fdaa12 | 4064 | |
d545daba | 4065 | if (req->flags & ASSOC_REQ_DISABLE_HT) { |
a8243b72 | 4066 | ifmgd->flags |= IEEE80211_STA_DISABLE_HT; |
d545daba MP |
4067 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; |
4068 | } | |
ef96a842 | 4069 | |
dd5ecfea JB |
4070 | if (req->flags & ASSOC_REQ_DISABLE_VHT) |
4071 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; | |
4072 | ||
4e74bfdb JB |
4073 | /* Also disable HT if we don't support it or the AP doesn't use WMM */ |
4074 | sband = local->hw.wiphy->bands[req->bss->channel->band]; | |
4075 | if (!sband->ht_cap.ht_supported || | |
1c4cb928 | 4076 | local->hw.queues < IEEE80211_NUM_ACS || !bss->wmm_used) { |
a8243b72 | 4077 | ifmgd->flags |= IEEE80211_STA_DISABLE_HT; |
1b49de26 JB |
4078 | if (!bss->wmm_used) |
4079 | netdev_info(sdata->dev, | |
4080 | "disabling HT as WMM/QoS is not supported by the AP\n"); | |
1c4cb928 | 4081 | } |
4e74bfdb | 4082 | |
d545daba MP |
4083 | /* disable VHT if we don't support it or the AP doesn't use WMM */ |
4084 | if (!sband->vht_cap.vht_supported || | |
4085 | local->hw.queues < IEEE80211_NUM_ACS || !bss->wmm_used) { | |
4086 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; | |
1b49de26 JB |
4087 | if (!bss->wmm_used) |
4088 | netdev_info(sdata->dev, | |
4089 | "disabling VHT as WMM/QoS is not supported by the AP\n"); | |
d545daba MP |
4090 | } |
4091 | ||
ef96a842 BG |
4092 | memcpy(&ifmgd->ht_capa, &req->ht_capa, sizeof(ifmgd->ht_capa)); |
4093 | memcpy(&ifmgd->ht_capa_mask, &req->ht_capa_mask, | |
4094 | sizeof(ifmgd->ht_capa_mask)); | |
4095 | ||
dd5ecfea JB |
4096 | memcpy(&ifmgd->vht_capa, &req->vht_capa, sizeof(ifmgd->vht_capa)); |
4097 | memcpy(&ifmgd->vht_capa_mask, &req->vht_capa_mask, | |
4098 | sizeof(ifmgd->vht_capa_mask)); | |
4099 | ||
77fdaa12 | 4100 | if (req->ie && req->ie_len) { |
66e67e41 JB |
4101 | memcpy(assoc_data->ie, req->ie, req->ie_len); |
4102 | assoc_data->ie_len = req->ie_len; | |
4103 | } | |
f679f65d | 4104 | |
66e67e41 | 4105 | assoc_data->bss = req->bss; |
f679f65d | 4106 | |
af6b6374 JB |
4107 | if (ifmgd->req_smps == IEEE80211_SMPS_AUTOMATIC) { |
4108 | if (ifmgd->powersave) | |
04ecd257 | 4109 | sdata->smps_mode = IEEE80211_SMPS_DYNAMIC; |
af6b6374 | 4110 | else |
04ecd257 | 4111 | sdata->smps_mode = IEEE80211_SMPS_OFF; |
af6b6374 | 4112 | } else |
04ecd257 | 4113 | sdata->smps_mode = ifmgd->req_smps; |
af6b6374 | 4114 | |
66e67e41 | 4115 | assoc_data->capability = req->bss->capability; |
32c5057b JB |
4116 | assoc_data->wmm = bss->wmm_used && |
4117 | (local->hw.queues >= IEEE80211_NUM_ACS); | |
66e67e41 JB |
4118 | assoc_data->supp_rates = bss->supp_rates; |
4119 | assoc_data->supp_rates_len = bss->supp_rates_len; | |
9dde6423 | 4120 | |
9caf0364 | 4121 | rcu_read_lock(); |
9dde6423 JB |
4122 | ht_ie = ieee80211_bss_get_ie(req->bss, WLAN_EID_HT_OPERATION); |
4123 | if (ht_ie && ht_ie[1] >= sizeof(struct ieee80211_ht_operation)) | |
4124 | assoc_data->ap_ht_param = | |
4125 | ((struct ieee80211_ht_operation *)(ht_ie + 2))->ht_param; | |
4126 | else | |
a8243b72 | 4127 | ifmgd->flags |= IEEE80211_STA_DISABLE_HT; |
b08fbbd8 JB |
4128 | vht_ie = ieee80211_bss_get_ie(req->bss, WLAN_EID_VHT_CAPABILITY); |
4129 | if (vht_ie && vht_ie[1] >= sizeof(struct ieee80211_vht_cap)) | |
4130 | memcpy(&assoc_data->ap_vht_cap, vht_ie + 2, | |
4131 | sizeof(struct ieee80211_vht_cap)); | |
4132 | else | |
4133 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; | |
9caf0364 | 4134 | rcu_read_unlock(); |
63f170e0 | 4135 | |
ab13315a | 4136 | if (bss->wmm_used && bss->uapsd_supported && |
24aa11ab AB |
4137 | (sdata->local->hw.flags & IEEE80211_HW_SUPPORTS_UAPSD) && |
4138 | sdata->wmm_acm != 0xff) { | |
76f0303d | 4139 | assoc_data->uapsd = true; |
ab13315a KV |
4140 | ifmgd->flags |= IEEE80211_STA_UAPSD_ENABLED; |
4141 | } else { | |
76f0303d | 4142 | assoc_data->uapsd = false; |
ab13315a KV |
4143 | ifmgd->flags &= ~IEEE80211_STA_UAPSD_ENABLED; |
4144 | } | |
4145 | ||
77fdaa12 | 4146 | if (req->prev_bssid) |
66e67e41 | 4147 | memcpy(assoc_data->prev_bssid, req->prev_bssid, ETH_ALEN); |
77fdaa12 JB |
4148 | |
4149 | if (req->use_mfp) { | |
4150 | ifmgd->mfp = IEEE80211_MFP_REQUIRED; | |
4151 | ifmgd->flags |= IEEE80211_STA_MFP_ENABLED; | |
4152 | } else { | |
4153 | ifmgd->mfp = IEEE80211_MFP_DISABLED; | |
4154 | ifmgd->flags &= ~IEEE80211_STA_MFP_ENABLED; | |
4155 | } | |
4156 | ||
4157 | if (req->crypto.control_port) | |
4158 | ifmgd->flags |= IEEE80211_STA_CONTROL_PORT; | |
4159 | else | |
4160 | ifmgd->flags &= ~IEEE80211_STA_CONTROL_PORT; | |
4161 | ||
a621fa4d JB |
4162 | sdata->control_port_protocol = req->crypto.control_port_ethertype; |
4163 | sdata->control_port_no_encrypt = req->crypto.control_port_no_encrypt; | |
4164 | ||
66e67e41 JB |
4165 | /* kick off associate process */ |
4166 | ||
4167 | ifmgd->assoc_data = assoc_data; | |
826262c3 | 4168 | ifmgd->dtim_period = 0; |
66e67e41 | 4169 | |
a1cf775d JB |
4170 | err = ieee80211_prep_connection(sdata, req->bss, true); |
4171 | if (err) | |
4172 | goto err_clear; | |
66e67e41 | 4173 | |
c65dd147 EG |
4174 | rcu_read_lock(); |
4175 | beacon_ies = rcu_dereference(req->bss->beacon_ies); | |
826262c3 | 4176 | |
c65dd147 EG |
4177 | if (sdata->local->hw.flags & IEEE80211_HW_NEED_DTIM_BEFORE_ASSOC && |
4178 | !beacon_ies) { | |
4179 | /* | |
4180 | * Wait up to one beacon interval ... | |
4181 | * should this be more if we miss one? | |
4182 | */ | |
4183 | sdata_info(sdata, "waiting for beacon from %pM\n", | |
4184 | ifmgd->bssid); | |
4185 | assoc_data->timeout = TU_TO_EXP_TIME(req->bss->beacon_interval); | |
89afe614 | 4186 | assoc_data->timeout_started = true; |
c65dd147 EG |
4187 | assoc_data->need_beacon = true; |
4188 | } else if (beacon_ies) { | |
4189 | const u8 *tim_ie = cfg80211_find_ie(WLAN_EID_TIM, | |
4190 | beacon_ies->data, | |
4191 | beacon_ies->len); | |
ef429dad JB |
4192 | u8 dtim_count = 0; |
4193 | ||
c65dd147 EG |
4194 | if (tim_ie && tim_ie[1] >= sizeof(struct ieee80211_tim_ie)) { |
4195 | const struct ieee80211_tim_ie *tim; | |
4196 | tim = (void *)(tim_ie + 2); | |
4197 | ifmgd->dtim_period = tim->dtim_period; | |
ef429dad | 4198 | dtim_count = tim->dtim_count; |
826262c3 | 4199 | } |
66e67e41 | 4200 | assoc_data->have_beacon = true; |
66e67e41 | 4201 | assoc_data->timeout = jiffies; |
89afe614 | 4202 | assoc_data->timeout_started = true; |
ef429dad JB |
4203 | |
4204 | if (local->hw.flags & IEEE80211_HW_TIMING_BEACON_ONLY) { | |
4205 | sdata->vif.bss_conf.sync_tsf = beacon_ies->tsf; | |
4206 | sdata->vif.bss_conf.sync_device_ts = | |
4207 | bss->device_ts_beacon; | |
4208 | sdata->vif.bss_conf.sync_dtim_count = dtim_count; | |
4209 | } | |
c65dd147 EG |
4210 | } else { |
4211 | assoc_data->timeout = jiffies; | |
89afe614 | 4212 | assoc_data->timeout_started = true; |
66e67e41 | 4213 | } |
c65dd147 EG |
4214 | rcu_read_unlock(); |
4215 | ||
66e67e41 JB |
4216 | run_again(ifmgd, assoc_data->timeout); |
4217 | ||
fcff4f10 PS |
4218 | if (bss->corrupt_data) { |
4219 | char *corrupt_type = "data"; | |
4220 | if (bss->corrupt_data & IEEE80211_BSS_CORRUPT_BEACON) { | |
4221 | if (bss->corrupt_data & | |
4222 | IEEE80211_BSS_CORRUPT_PROBE_RESP) | |
4223 | corrupt_type = "beacon and probe response"; | |
4224 | else | |
4225 | corrupt_type = "beacon"; | |
4226 | } else if (bss->corrupt_data & IEEE80211_BSS_CORRUPT_PROBE_RESP) | |
4227 | corrupt_type = "probe response"; | |
bdcbd8e0 JB |
4228 | sdata_info(sdata, "associating with AP with corrupt %s\n", |
4229 | corrupt_type); | |
fcff4f10 PS |
4230 | } |
4231 | ||
66e67e41 JB |
4232 | err = 0; |
4233 | goto out; | |
4234 | err_clear: | |
3d2abdfd EP |
4235 | memset(ifmgd->bssid, 0, ETH_ALEN); |
4236 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID); | |
66e67e41 JB |
4237 | ifmgd->assoc_data = NULL; |
4238 | err_free: | |
4239 | kfree(assoc_data); | |
4240 | out: | |
4241 | mutex_unlock(&ifmgd->mtx); | |
4242 | ||
4243 | return err; | |
f0706e82 JB |
4244 | } |
4245 | ||
77fdaa12 | 4246 | int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, |
63c9c5e7 | 4247 | struct cfg80211_deauth_request *req) |
f0706e82 | 4248 | { |
46900298 | 4249 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
6ae16775 | 4250 | u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN]; |
6863255b | 4251 | bool tx = !req->local_state_change; |
86552017 | 4252 | bool sent_frame = false; |
f0706e82 | 4253 | |
77fdaa12 JB |
4254 | mutex_lock(&ifmgd->mtx); |
4255 | ||
bdcbd8e0 JB |
4256 | sdata_info(sdata, |
4257 | "deauthenticating from %pM by local choice (reason=%d)\n", | |
4258 | req->bssid, req->reason_code); | |
0ff71613 | 4259 | |
86552017 | 4260 | if (ifmgd->auth_data) { |
8c7d857c | 4261 | drv_mgd_prepare_tx(sdata->local, sdata); |
37ad3888 JB |
4262 | ieee80211_send_deauth_disassoc(sdata, req->bssid, |
4263 | IEEE80211_STYPE_DEAUTH, | |
6863255b | 4264 | req->reason_code, tx, |
37ad3888 | 4265 | frame_buf); |
86552017 JB |
4266 | ieee80211_destroy_auth_data(sdata, false); |
4267 | mutex_unlock(&ifmgd->mtx); | |
4268 | ||
4269 | sent_frame = tx; | |
4270 | goto out; | |
8c7d857c EG |
4271 | } |
4272 | ||
86552017 JB |
4273 | if (ifmgd->associated && |
4274 | ether_addr_equal(ifmgd->associated->bssid, req->bssid)) { | |
4275 | ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, | |
4276 | req->reason_code, tx, frame_buf); | |
4277 | sent_frame = tx; | |
4278 | } | |
37ad3888 JB |
4279 | mutex_unlock(&ifmgd->mtx); |
4280 | ||
86552017 | 4281 | out: |
86552017 JB |
4282 | if (sent_frame) |
4283 | __cfg80211_send_deauth(sdata->dev, frame_buf, | |
4284 | IEEE80211_DEAUTH_FRAME_LEN); | |
4285 | ||
f0706e82 JB |
4286 | return 0; |
4287 | } | |
84363e6e | 4288 | |
77fdaa12 | 4289 | int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, |
63c9c5e7 | 4290 | struct cfg80211_disassoc_request *req) |
9c6bd790 | 4291 | { |
77fdaa12 | 4292 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
e69e95db | 4293 | u8 bssid[ETH_ALEN]; |
6ae16775 | 4294 | u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN]; |
9c6bd790 | 4295 | |
77fdaa12 | 4296 | mutex_lock(&ifmgd->mtx); |
10f644a4 | 4297 | |
8d8b261a JB |
4298 | /* |
4299 | * cfg80211 should catch this ... but it's racy since | |
4300 | * we can receive a disassoc frame, process it, hand it | |
4301 | * to cfg80211 while that's in a locked section already | |
4302 | * trying to tell us that the user wants to disconnect. | |
4303 | */ | |
0c1ad2ca | 4304 | if (ifmgd->associated != req->bss) { |
77fdaa12 JB |
4305 | mutex_unlock(&ifmgd->mtx); |
4306 | return -ENOLINK; | |
4307 | } | |
4308 | ||
bdcbd8e0 JB |
4309 | sdata_info(sdata, |
4310 | "disassociating from %pM by local choice (reason=%d)\n", | |
4311 | req->bss->bssid, req->reason_code); | |
0ff71613 | 4312 | |
e69e95db | 4313 | memcpy(bssid, req->bss->bssid, ETH_ALEN); |
37ad3888 JB |
4314 | ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DISASSOC, |
4315 | req->reason_code, !req->local_state_change, | |
4316 | frame_buf); | |
77fdaa12 | 4317 | mutex_unlock(&ifmgd->mtx); |
10f644a4 | 4318 | |
6ae16775 AQ |
4319 | __cfg80211_send_disassoc(sdata->dev, frame_buf, |
4320 | IEEE80211_DEAUTH_FRAME_LEN); | |
bc83b681 | 4321 | |
10f644a4 JB |
4322 | return 0; |
4323 | } | |
026331c4 | 4324 | |
afa762f6 | 4325 | void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata) |
54e4ffb2 JB |
4326 | { |
4327 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
4328 | ||
49921859 BG |
4329 | /* |
4330 | * Make sure some work items will not run after this, | |
4331 | * they will not do anything but might not have been | |
4332 | * cancelled when disconnecting. | |
4333 | */ | |
4334 | cancel_work_sync(&ifmgd->monitor_work); | |
4335 | cancel_work_sync(&ifmgd->beacon_connection_loss_work); | |
4336 | cancel_work_sync(&ifmgd->request_smps_work); | |
4337 | cancel_work_sync(&ifmgd->csa_connection_drop_work); | |
4338 | cancel_work_sync(&ifmgd->chswitch_work); | |
4339 | ||
54e4ffb2 JB |
4340 | mutex_lock(&ifmgd->mtx); |
4341 | if (ifmgd->assoc_data) | |
4342 | ieee80211_destroy_assoc_data(sdata, false); | |
4343 | if (ifmgd->auth_data) | |
4344 | ieee80211_destroy_auth_data(sdata, false); | |
4345 | del_timer_sync(&ifmgd->timer); | |
4346 | mutex_unlock(&ifmgd->mtx); | |
4347 | } | |
4348 | ||
a97c13c3 JO |
4349 | void ieee80211_cqm_rssi_notify(struct ieee80211_vif *vif, |
4350 | enum nl80211_cqm_rssi_threshold_event rssi_event, | |
4351 | gfp_t gfp) | |
4352 | { | |
4353 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
4354 | ||
b5878a2d JB |
4355 | trace_api_cqm_rssi_notify(sdata, rssi_event); |
4356 | ||
a97c13c3 JO |
4357 | cfg80211_cqm_rssi_notify(sdata->dev, rssi_event, gfp); |
4358 | } | |
4359 | EXPORT_SYMBOL(ieee80211_cqm_rssi_notify); |