Commit | Line | Data |
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1f5a7e47 JB |
1 | /* |
2 | * Copyright 2002-2005, Instant802 Networks, Inc. | |
3 | * Copyright 2005-2006, Devicescape Software, Inc. | |
4 | * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz> | |
3b96766f | 5 | * Copyright 2007-2008 Johannes Berg <johannes@sipsolutions.net> |
1f5a7e47 JB |
6 | * |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License version 2 as | |
9 | * published by the Free Software Foundation. | |
10 | */ | |
11 | ||
11a843b7 JB |
12 | #include <linux/if_ether.h> |
13 | #include <linux/etherdevice.h> | |
14 | #include <linux/list.h> | |
d4e46a3d | 15 | #include <linux/rcupdate.h> |
db4d1169 | 16 | #include <linux/rtnetlink.h> |
1f5a7e47 JB |
17 | #include <net/mac80211.h> |
18 | #include "ieee80211_i.h" | |
19 | #include "debugfs_key.h" | |
20 | #include "aes_ccm.h" | |
21 | ||
11a843b7 | 22 | |
dbbea671 JB |
23 | /** |
24 | * DOC: Key handling basics | |
11a843b7 JB |
25 | * |
26 | * Key handling in mac80211 is done based on per-interface (sub_if_data) | |
27 | * keys and per-station keys. Since each station belongs to an interface, | |
28 | * each station key also belongs to that interface. | |
29 | * | |
30 | * Hardware acceleration is done on a best-effort basis, for each key | |
31 | * that is eligible the hardware is asked to enable that key but if | |
32 | * it cannot do that they key is simply kept for software encryption. | |
33 | * There is currently no way of knowing this except by looking into | |
34 | * debugfs. | |
35 | * | |
3b96766f JB |
36 | * All key operations are protected internally so you can call them at |
37 | * any time. | |
db4d1169 | 38 | * |
3b96766f JB |
39 | * Within mac80211, key references are, just as STA structure references, |
40 | * protected by RCU. Note, however, that some things are unprotected, | |
41 | * namely the key->sta dereferences within the hardware acceleration | |
42 | * functions. This means that sta_info_destroy() must flush the key todo | |
43 | * list. | |
44 | * | |
45 | * All the direct key list manipulation functions must not sleep because | |
46 | * they can operate on STA info structs that are protected by RCU. | |
11a843b7 JB |
47 | */ |
48 | ||
49 | static const u8 bcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF }; | |
50 | static const u8 zero_addr[ETH_ALEN]; | |
51 | ||
3b96766f JB |
52 | /* key mutex: used to synchronise todo runners */ |
53 | static DEFINE_MUTEX(key_mutex); | |
54 | static DEFINE_SPINLOCK(todo_lock); | |
55 | static LIST_HEAD(todo_list); | |
56 | ||
57 | static void key_todo(struct work_struct *work) | |
58 | { | |
59 | ieee80211_key_todo(); | |
60 | } | |
61 | ||
62 | static DECLARE_WORK(todo_work, key_todo); | |
63 | ||
64 | /** | |
65 | * add_todo - add todo item for a key | |
66 | * | |
67 | * @key: key to add to do item for | |
68 | * @flag: todo flag(s) | |
69 | */ | |
70 | static void add_todo(struct ieee80211_key *key, u32 flag) | |
71 | { | |
72 | if (!key) | |
73 | return; | |
74 | ||
75 | spin_lock(&todo_lock); | |
76 | key->flags |= flag; | |
245cbe7a JB |
77 | /* |
78 | * Remove again if already on the list so that we move it to the end. | |
79 | */ | |
80 | if (!list_empty(&key->todo)) | |
81 | list_del(&key->todo); | |
82 | list_add_tail(&key->todo, &todo_list); | |
3b96766f JB |
83 | schedule_work(&todo_work); |
84 | spin_unlock(&todo_lock); | |
85 | } | |
86 | ||
87 | /** | |
88 | * ieee80211_key_lock - lock the mac80211 key operation lock | |
89 | * | |
90 | * This locks the (global) mac80211 key operation lock, all | |
91 | * key operations must be done under this lock. | |
92 | */ | |
93 | static void ieee80211_key_lock(void) | |
94 | { | |
95 | mutex_lock(&key_mutex); | |
96 | } | |
97 | ||
98 | /** | |
99 | * ieee80211_key_unlock - unlock the mac80211 key operation lock | |
100 | */ | |
101 | static void ieee80211_key_unlock(void) | |
102 | { | |
103 | mutex_unlock(&key_mutex); | |
104 | } | |
105 | ||
106 | static void assert_key_lock(void) | |
107 | { | |
108 | WARN_ON(!mutex_is_locked(&key_mutex)); | |
109 | } | |
110 | ||
11a843b7 JB |
111 | static const u8 *get_mac_for_key(struct ieee80211_key *key) |
112 | { | |
113 | const u8 *addr = bcast_addr; | |
114 | ||
115 | /* | |
116 | * If we're an AP we won't ever receive frames with a non-WEP | |
117 | * group key so we tell the driver that by using the zero MAC | |
118 | * address to indicate a transmit-only key. | |
119 | */ | |
120 | if (key->conf.alg != ALG_WEP && | |
05c914fe JB |
121 | (key->sdata->vif.type == NL80211_IFTYPE_AP || |
122 | key->sdata->vif.type == NL80211_IFTYPE_AP_VLAN)) | |
11a843b7 JB |
123 | addr = zero_addr; |
124 | ||
125 | if (key->sta) | |
17741cdc | 126 | addr = key->sta->sta.addr; |
11a843b7 JB |
127 | |
128 | return addr; | |
129 | } | |
130 | ||
131 | static void ieee80211_key_enable_hw_accel(struct ieee80211_key *key) | |
132 | { | |
133 | const u8 *addr; | |
134 | int ret; | |
135 | ||
3b96766f JB |
136 | assert_key_lock(); |
137 | might_sleep(); | |
138 | ||
11a843b7 JB |
139 | if (!key->local->ops->set_key) |
140 | return; | |
141 | ||
142 | addr = get_mac_for_key(key); | |
143 | ||
144 | ret = key->local->ops->set_key(local_to_hw(key->local), SET_KEY, | |
145 | key->sdata->dev->dev_addr, addr, | |
146 | &key->conf); | |
147 | ||
3b96766f JB |
148 | if (!ret) { |
149 | spin_lock(&todo_lock); | |
11a843b7 | 150 | key->flags |= KEY_FLAG_UPLOADED_TO_HARDWARE; |
3b96766f JB |
151 | spin_unlock(&todo_lock); |
152 | } | |
11a843b7 JB |
153 | |
154 | if (ret && ret != -ENOSPC && ret != -EOPNOTSUPP) | |
155 | printk(KERN_ERR "mac80211-%s: failed to set key " | |
0c68ae26 | 156 | "(%d, %pM) to hardware (%d)\n", |
11a843b7 | 157 | wiphy_name(key->local->hw.wiphy), |
0c68ae26 | 158 | key->conf.keyidx, addr, ret); |
11a843b7 JB |
159 | } |
160 | ||
161 | static void ieee80211_key_disable_hw_accel(struct ieee80211_key *key) | |
162 | { | |
163 | const u8 *addr; | |
164 | int ret; | |
165 | ||
3b96766f JB |
166 | assert_key_lock(); |
167 | might_sleep(); | |
168 | ||
db4d1169 | 169 | if (!key || !key->local->ops->set_key) |
11a843b7 JB |
170 | return; |
171 | ||
3b96766f JB |
172 | spin_lock(&todo_lock); |
173 | if (!(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)) { | |
174 | spin_unlock(&todo_lock); | |
11a843b7 | 175 | return; |
3b96766f JB |
176 | } |
177 | spin_unlock(&todo_lock); | |
11a843b7 JB |
178 | |
179 | addr = get_mac_for_key(key); | |
180 | ||
181 | ret = key->local->ops->set_key(local_to_hw(key->local), DISABLE_KEY, | |
182 | key->sdata->dev->dev_addr, addr, | |
183 | &key->conf); | |
184 | ||
185 | if (ret) | |
186 | printk(KERN_ERR "mac80211-%s: failed to remove key " | |
0c68ae26 | 187 | "(%d, %pM) from hardware (%d)\n", |
11a843b7 | 188 | wiphy_name(key->local->hw.wiphy), |
0c68ae26 | 189 | key->conf.keyidx, addr, ret); |
11a843b7 | 190 | |
3b96766f JB |
191 | spin_lock(&todo_lock); |
192 | key->flags &= ~KEY_FLAG_UPLOADED_TO_HARDWARE; | |
193 | spin_unlock(&todo_lock); | |
194 | } | |
195 | ||
196 | static void __ieee80211_set_default_key(struct ieee80211_sub_if_data *sdata, | |
197 | int idx) | |
198 | { | |
199 | struct ieee80211_key *key = NULL; | |
200 | ||
201 | if (idx >= 0 && idx < NUM_DEFAULT_KEYS) | |
202 | key = sdata->keys[idx]; | |
203 | ||
204 | rcu_assign_pointer(sdata->default_key, key); | |
205 | ||
206 | if (key) | |
207 | add_todo(key, KEY_FLAG_TODO_DEFKEY); | |
208 | } | |
209 | ||
210 | void ieee80211_set_default_key(struct ieee80211_sub_if_data *sdata, int idx) | |
211 | { | |
212 | unsigned long flags; | |
213 | ||
b16bd15c | 214 | spin_lock_irqsave(&sdata->local->key_lock, flags); |
3b96766f | 215 | __ieee80211_set_default_key(sdata, idx); |
b16bd15c | 216 | spin_unlock_irqrestore(&sdata->local->key_lock, flags); |
3b96766f JB |
217 | } |
218 | ||
219 | ||
220 | static void __ieee80211_key_replace(struct ieee80211_sub_if_data *sdata, | |
221 | struct sta_info *sta, | |
222 | struct ieee80211_key *old, | |
223 | struct ieee80211_key *new) | |
224 | { | |
225 | int idx, defkey; | |
226 | ||
227 | if (new) | |
228 | list_add(&new->list, &sdata->key_list); | |
229 | ||
230 | if (sta) { | |
231 | rcu_assign_pointer(sta->key, new); | |
232 | } else { | |
233 | WARN_ON(new && old && new->conf.keyidx != old->conf.keyidx); | |
234 | ||
235 | if (old) | |
236 | idx = old->conf.keyidx; | |
237 | else | |
238 | idx = new->conf.keyidx; | |
239 | ||
240 | defkey = old && sdata->default_key == old; | |
241 | ||
242 | if (defkey && !new) | |
243 | __ieee80211_set_default_key(sdata, -1); | |
244 | ||
245 | rcu_assign_pointer(sdata->keys[idx], new); | |
246 | if (defkey && new) | |
247 | __ieee80211_set_default_key(sdata, new->conf.keyidx); | |
248 | } | |
249 | ||
250 | if (old) { | |
251 | /* | |
252 | * We'll use an empty list to indicate that the key | |
253 | * has already been removed. | |
254 | */ | |
255 | list_del_init(&old->list); | |
256 | } | |
11a843b7 JB |
257 | } |
258 | ||
db4d1169 | 259 | struct ieee80211_key *ieee80211_key_alloc(enum ieee80211_key_alg alg, |
11a843b7 JB |
260 | int idx, |
261 | size_t key_len, | |
262 | const u8 *key_data) | |
1f5a7e47 JB |
263 | { |
264 | struct ieee80211_key *key; | |
265 | ||
d4e46a3d | 266 | BUG_ON(idx < 0 || idx >= NUM_DEFAULT_KEYS); |
11a843b7 JB |
267 | |
268 | key = kzalloc(sizeof(struct ieee80211_key) + key_len, GFP_KERNEL); | |
1f5a7e47 JB |
269 | if (!key) |
270 | return NULL; | |
11a843b7 JB |
271 | |
272 | /* | |
273 | * Default to software encryption; we'll later upload the | |
274 | * key to the hardware if possible. | |
275 | */ | |
11a843b7 JB |
276 | key->conf.flags = 0; |
277 | key->flags = 0; | |
278 | ||
279 | key->conf.alg = alg; | |
280 | key->conf.keyidx = idx; | |
281 | key->conf.keylen = key_len; | |
76708dee FF |
282 | switch (alg) { |
283 | case ALG_WEP: | |
284 | key->conf.iv_len = WEP_IV_LEN; | |
285 | key->conf.icv_len = WEP_ICV_LEN; | |
286 | break; | |
287 | case ALG_TKIP: | |
288 | key->conf.iv_len = TKIP_IV_LEN; | |
289 | key->conf.icv_len = TKIP_ICV_LEN; | |
290 | break; | |
291 | case ALG_CCMP: | |
292 | key->conf.iv_len = CCMP_HDR_LEN; | |
293 | key->conf.icv_len = CCMP_MIC_LEN; | |
294 | break; | |
295 | } | |
11a843b7 | 296 | memcpy(key->conf.key, key_data, key_len); |
e4861829 | 297 | INIT_LIST_HEAD(&key->list); |
3b96766f | 298 | INIT_LIST_HEAD(&key->todo); |
11a843b7 | 299 | |
11a843b7 JB |
300 | if (alg == ALG_CCMP) { |
301 | /* | |
302 | * Initialize AES key state here as an optimization so that | |
303 | * it does not need to be initialized for every packet. | |
304 | */ | |
305 | key->u.ccmp.tfm = ieee80211_aes_key_setup_encrypt(key_data); | |
306 | if (!key->u.ccmp.tfm) { | |
3b96766f | 307 | kfree(key); |
11a843b7 JB |
308 | return NULL; |
309 | } | |
310 | } | |
311 | ||
db4d1169 JB |
312 | return key; |
313 | } | |
11a843b7 | 314 | |
db4d1169 JB |
315 | void ieee80211_key_link(struct ieee80211_key *key, |
316 | struct ieee80211_sub_if_data *sdata, | |
317 | struct sta_info *sta) | |
318 | { | |
319 | struct ieee80211_key *old_key; | |
3b96766f | 320 | unsigned long flags; |
db4d1169 JB |
321 | int idx; |
322 | ||
db4d1169 JB |
323 | BUG_ON(!sdata); |
324 | BUG_ON(!key); | |
325 | ||
326 | idx = key->conf.keyidx; | |
327 | key->local = sdata->local; | |
328 | key->sdata = sdata; | |
329 | key->sta = sta; | |
330 | ||
11a843b7 | 331 | if (sta) { |
11a843b7 JB |
332 | /* |
333 | * some hardware cannot handle TKIP with QoS, so | |
334 | * we indicate whether QoS could be in use. | |
335 | */ | |
07346f81 | 336 | if (test_sta_flags(sta, WLAN_STA_WME)) |
11a843b7 | 337 | key->conf.flags |= IEEE80211_KEY_FLAG_WMM_STA; |
c6adbd21 ID |
338 | |
339 | /* | |
340 | * This key is for a specific sta interface, | |
341 | * inform the driver that it should try to store | |
342 | * this key as pairwise key. | |
343 | */ | |
344 | key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE; | |
11a843b7 | 345 | } else { |
05c914fe | 346 | if (sdata->vif.type == NL80211_IFTYPE_STATION) { |
11a843b7 JB |
347 | struct sta_info *ap; |
348 | ||
3b96766f JB |
349 | /* |
350 | * We're getting a sta pointer in, | |
351 | * so must be under RCU read lock. | |
352 | */ | |
d0709a65 | 353 | |
11a843b7 JB |
354 | /* same here, the AP could be using QoS */ |
355 | ap = sta_info_get(key->local, key->sdata->u.sta.bssid); | |
356 | if (ap) { | |
07346f81 | 357 | if (test_sta_flags(ap, WLAN_STA_WME)) |
11a843b7 JB |
358 | key->conf.flags |= |
359 | IEEE80211_KEY_FLAG_WMM_STA; | |
11a843b7 JB |
360 | } |
361 | } | |
11a843b7 JB |
362 | } |
363 | ||
b16bd15c | 364 | spin_lock_irqsave(&sdata->local->key_lock, flags); |
3b96766f | 365 | |
d4e46a3d | 366 | if (sta) |
db4d1169 | 367 | old_key = sta->key; |
d4e46a3d | 368 | else |
db4d1169 JB |
369 | old_key = sdata->keys[idx]; |
370 | ||
371 | __ieee80211_key_replace(sdata, sta, old_key, key); | |
d4e46a3d | 372 | |
b16bd15c | 373 | spin_unlock_irqrestore(&sdata->local->key_lock, flags); |
3b96766f JB |
374 | |
375 | /* free old key later */ | |
376 | add_todo(old_key, KEY_FLAG_TODO_DELETE); | |
db4d1169 | 377 | |
3b96766f | 378 | add_todo(key, KEY_FLAG_TODO_ADD_DEBUGFS); |
e4861829 | 379 | if (netif_running(sdata->dev)) |
3a245766 | 380 | add_todo(key, KEY_FLAG_TODO_HWACCEL_ADD); |
1f5a7e47 JB |
381 | } |
382 | ||
3a245766 | 383 | static void __ieee80211_key_free(struct ieee80211_key *key) |
1f5a7e47 | 384 | { |
3b96766f JB |
385 | /* |
386 | * Replace key with nothingness if it was ever used. | |
387 | */ | |
3a245766 | 388 | if (key->sdata) |
3b96766f JB |
389 | __ieee80211_key_replace(key->sdata, key->sta, |
390 | key, NULL); | |
11a843b7 | 391 | |
3b96766f JB |
392 | add_todo(key, KEY_FLAG_TODO_DELETE); |
393 | } | |
d4e46a3d | 394 | |
3a245766 | 395 | void ieee80211_key_free(struct ieee80211_key *key) |
3b96766f | 396 | { |
3a245766 | 397 | unsigned long flags; |
11a843b7 | 398 | |
3a245766 | 399 | if (!key) |
3b96766f JB |
400 | return; |
401 | ||
00eb7fe7 EG |
402 | if (!key->sdata) { |
403 | /* The key has not been linked yet, simply free it | |
404 | * and don't Oops */ | |
405 | if (key->conf.alg == ALG_CCMP) | |
406 | ieee80211_aes_key_free(key->u.ccmp.tfm); | |
407 | kfree(key); | |
408 | return; | |
409 | } | |
410 | ||
b16bd15c | 411 | spin_lock_irqsave(&key->sdata->local->key_lock, flags); |
3a245766 | 412 | __ieee80211_key_free(key); |
b16bd15c | 413 | spin_unlock_irqrestore(&key->sdata->local->key_lock, flags); |
3a245766 JB |
414 | } |
415 | ||
416 | /* | |
417 | * To be safe against concurrent manipulations of the list (which shouldn't | |
418 | * actually happen) we need to hold the spinlock. But under the spinlock we | |
419 | * can't actually do much, so we defer processing to the todo list. Then run | |
420 | * the todo list to be sure the operation and possibly previously pending | |
421 | * operations are completed. | |
422 | */ | |
423 | static void ieee80211_todo_for_each_key(struct ieee80211_sub_if_data *sdata, | |
424 | u32 todo_flags) | |
425 | { | |
426 | struct ieee80211_key *key; | |
427 | unsigned long flags; | |
3b96766f | 428 | |
3a245766 JB |
429 | might_sleep(); |
430 | ||
b16bd15c | 431 | spin_lock_irqsave(&sdata->local->key_lock, flags); |
3b96766f | 432 | list_for_each_entry(key, &sdata->key_list, list) |
3a245766 | 433 | add_todo(key, todo_flags); |
b16bd15c | 434 | spin_unlock_irqrestore(&sdata->local->key_lock, flags); |
3b96766f | 435 | |
3a245766 | 436 | ieee80211_key_todo(); |
1f5a7e47 | 437 | } |
11a843b7 | 438 | |
3a245766 | 439 | void ieee80211_enable_keys(struct ieee80211_sub_if_data *sdata) |
11a843b7 | 440 | { |
3a245766 | 441 | ASSERT_RTNL(); |
11a843b7 | 442 | |
3a245766 JB |
443 | if (WARN_ON(!netif_running(sdata->dev))) |
444 | return; | |
11a843b7 | 445 | |
3a245766 JB |
446 | ieee80211_todo_for_each_key(sdata, KEY_FLAG_TODO_HWACCEL_ADD); |
447 | } | |
11a843b7 | 448 | |
3a245766 JB |
449 | void ieee80211_disable_keys(struct ieee80211_sub_if_data *sdata) |
450 | { | |
451 | ASSERT_RTNL(); | |
11a843b7 | 452 | |
3a245766 | 453 | ieee80211_todo_for_each_key(sdata, KEY_FLAG_TODO_HWACCEL_REMOVE); |
11a843b7 JB |
454 | } |
455 | ||
3a245766 | 456 | static void __ieee80211_key_destroy(struct ieee80211_key *key) |
11a843b7 | 457 | { |
3b96766f JB |
458 | if (!key) |
459 | return; | |
db4d1169 | 460 | |
3b96766f | 461 | ieee80211_key_disable_hw_accel(key); |
11a843b7 | 462 | |
3b96766f JB |
463 | if (key->conf.alg == ALG_CCMP) |
464 | ieee80211_aes_key_free(key->u.ccmp.tfm); | |
465 | ieee80211_debugfs_key_remove(key); | |
466 | ||
467 | kfree(key); | |
11a843b7 JB |
468 | } |
469 | ||
3b96766f | 470 | static void __ieee80211_key_todo(void) |
11a843b7 JB |
471 | { |
472 | struct ieee80211_key *key; | |
3b96766f JB |
473 | bool work_done; |
474 | u32 todoflags; | |
11a843b7 | 475 | |
3b96766f JB |
476 | /* |
477 | * NB: sta_info_destroy relies on this! | |
478 | */ | |
479 | synchronize_rcu(); | |
480 | ||
481 | spin_lock(&todo_lock); | |
482 | while (!list_empty(&todo_list)) { | |
483 | key = list_first_entry(&todo_list, struct ieee80211_key, todo); | |
484 | list_del_init(&key->todo); | |
485 | todoflags = key->flags & (KEY_FLAG_TODO_ADD_DEBUGFS | | |
486 | KEY_FLAG_TODO_DEFKEY | | |
3a245766 JB |
487 | KEY_FLAG_TODO_HWACCEL_ADD | |
488 | KEY_FLAG_TODO_HWACCEL_REMOVE | | |
3b96766f JB |
489 | KEY_FLAG_TODO_DELETE); |
490 | key->flags &= ~todoflags; | |
491 | spin_unlock(&todo_lock); | |
492 | ||
493 | work_done = false; | |
494 | ||
495 | if (todoflags & KEY_FLAG_TODO_ADD_DEBUGFS) { | |
496 | ieee80211_debugfs_key_add(key); | |
497 | work_done = true; | |
498 | } | |
499 | if (todoflags & KEY_FLAG_TODO_DEFKEY) { | |
500 | ieee80211_debugfs_key_remove_default(key->sdata); | |
501 | ieee80211_debugfs_key_add_default(key->sdata); | |
502 | work_done = true; | |
503 | } | |
3a245766 | 504 | if (todoflags & KEY_FLAG_TODO_HWACCEL_ADD) { |
3b96766f JB |
505 | ieee80211_key_enable_hw_accel(key); |
506 | work_done = true; | |
507 | } | |
3a245766 JB |
508 | if (todoflags & KEY_FLAG_TODO_HWACCEL_REMOVE) { |
509 | ieee80211_key_disable_hw_accel(key); | |
510 | work_done = true; | |
511 | } | |
3b96766f | 512 | if (todoflags & KEY_FLAG_TODO_DELETE) { |
3a245766 | 513 | __ieee80211_key_destroy(key); |
3b96766f JB |
514 | work_done = true; |
515 | } | |
db4d1169 | 516 | |
3b96766f | 517 | WARN_ON(!work_done); |
11a843b7 | 518 | |
3b96766f JB |
519 | spin_lock(&todo_lock); |
520 | } | |
521 | spin_unlock(&todo_lock); | |
11a843b7 JB |
522 | } |
523 | ||
3b96766f | 524 | void ieee80211_key_todo(void) |
11a843b7 | 525 | { |
3b96766f JB |
526 | ieee80211_key_lock(); |
527 | __ieee80211_key_todo(); | |
528 | ieee80211_key_unlock(); | |
529 | } | |
11a843b7 | 530 | |
3b96766f JB |
531 | void ieee80211_free_keys(struct ieee80211_sub_if_data *sdata) |
532 | { | |
533 | struct ieee80211_key *key, *tmp; | |
3a245766 | 534 | unsigned long flags; |
db4d1169 | 535 | |
3b96766f JB |
536 | ieee80211_key_lock(); |
537 | ||
538 | ieee80211_debugfs_key_remove_default(sdata); | |
539 | ||
b16bd15c | 540 | spin_lock_irqsave(&sdata->local->key_lock, flags); |
3b96766f | 541 | list_for_each_entry_safe(key, tmp, &sdata->key_list, list) |
3a245766 | 542 | __ieee80211_key_free(key); |
b16bd15c | 543 | spin_unlock_irqrestore(&sdata->local->key_lock, flags); |
3b96766f JB |
544 | |
545 | __ieee80211_key_todo(); | |
546 | ||
547 | ieee80211_key_unlock(); | |
11a843b7 | 548 | } |