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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> |
5a0e3ad6 | 17 | #include <linux/slab.h> |
1f5a7e47 JB |
18 | #include <net/mac80211.h> |
19 | #include "ieee80211_i.h" | |
24487981 | 20 | #include "driver-ops.h" |
1f5a7e47 JB |
21 | #include "debugfs_key.h" |
22 | #include "aes_ccm.h" | |
3cfcf6ac | 23 | #include "aes_cmac.h" |
1f5a7e47 | 24 | |
11a843b7 | 25 | |
dbbea671 JB |
26 | /** |
27 | * DOC: Key handling basics | |
11a843b7 JB |
28 | * |
29 | * Key handling in mac80211 is done based on per-interface (sub_if_data) | |
30 | * keys and per-station keys. Since each station belongs to an interface, | |
31 | * each station key also belongs to that interface. | |
32 | * | |
33 | * Hardware acceleration is done on a best-effort basis, for each key | |
34 | * that is eligible the hardware is asked to enable that key but if | |
35 | * it cannot do that they key is simply kept for software encryption. | |
36 | * There is currently no way of knowing this except by looking into | |
37 | * debugfs. | |
38 | * | |
ad0e2b5a | 39 | * All key operations are protected internally. |
db4d1169 | 40 | * |
3b96766f JB |
41 | * Within mac80211, key references are, just as STA structure references, |
42 | * protected by RCU. Note, however, that some things are unprotected, | |
43 | * namely the key->sta dereferences within the hardware acceleration | |
ad0e2b5a JB |
44 | * functions. This means that sta_info_destroy() must remove the key |
45 | * which waits for an RCU grace period. | |
11a843b7 JB |
46 | */ |
47 | ||
48 | static const u8 bcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF }; | |
11a843b7 | 49 | |
ad0e2b5a | 50 | static void assert_key_lock(struct ieee80211_local *local) |
3b96766f | 51 | { |
46a5ebaf | 52 | lockdep_assert_held(&local->key_mtx); |
3b96766f JB |
53 | } |
54 | ||
dc822b5d | 55 | static struct ieee80211_sta *get_sta_for_key(struct ieee80211_key *key) |
11a843b7 | 56 | { |
11a843b7 | 57 | if (key->sta) |
dc822b5d | 58 | return &key->sta->sta; |
11a843b7 | 59 | |
dc822b5d | 60 | return NULL; |
11a843b7 JB |
61 | } |
62 | ||
3ffc2a90 | 63 | static int ieee80211_key_enable_hw_accel(struct ieee80211_key *key) |
11a843b7 | 64 | { |
dc822b5d JB |
65 | struct ieee80211_sub_if_data *sdata; |
66 | struct ieee80211_sta *sta; | |
11a843b7 JB |
67 | int ret; |
68 | ||
3b96766f JB |
69 | might_sleep(); |
70 | ||
e31b8213 | 71 | if (!key->local->ops->set_key) |
3ffc2a90 | 72 | goto out_unsupported; |
11a843b7 | 73 | |
ad0e2b5a JB |
74 | assert_key_lock(key->local); |
75 | ||
dc822b5d JB |
76 | sta = get_sta_for_key(key); |
77 | ||
e31b8213 JB |
78 | /* |
79 | * If this is a per-STA GTK, check if it | |
80 | * is supported; if not, return. | |
81 | */ | |
82 | if (sta && !(key->conf.flags & IEEE80211_KEY_FLAG_PAIRWISE) && | |
83 | !(key->local->hw.flags & IEEE80211_HW_SUPPORTS_PER_STA_GTK)) | |
84 | goto out_unsupported; | |
85 | ||
dc822b5d JB |
86 | sdata = key->sdata; |
87 | if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) | |
88 | sdata = container_of(sdata->bss, | |
89 | struct ieee80211_sub_if_data, | |
90 | u.ap); | |
11a843b7 | 91 | |
12375ef9 | 92 | ret = drv_set_key(key->local, SET_KEY, sdata, sta, &key->conf); |
11a843b7 | 93 | |
e31b8213 | 94 | if (!ret) { |
11a843b7 | 95 | key->flags |= KEY_FLAG_UPLOADED_TO_HARDWARE; |
e31b8213 JB |
96 | return 0; |
97 | } | |
11a843b7 | 98 | |
e31b8213 | 99 | if (ret != -ENOSPC && ret != -EOPNOTSUPP) |
0fb9a9ec JP |
100 | wiphy_err(key->local->hw.wiphy, |
101 | "failed to set key (%d, %pM) to hardware (%d)\n", | |
102 | key->conf.keyidx, sta ? sta->addr : bcast_addr, ret); | |
3ffc2a90 | 103 | |
e31b8213 JB |
104 | out_unsupported: |
105 | switch (key->conf.cipher) { | |
106 | case WLAN_CIPHER_SUITE_WEP40: | |
107 | case WLAN_CIPHER_SUITE_WEP104: | |
108 | case WLAN_CIPHER_SUITE_TKIP: | |
109 | case WLAN_CIPHER_SUITE_CCMP: | |
110 | case WLAN_CIPHER_SUITE_AES_CMAC: | |
111 | /* all of these we can do in software */ | |
112 | return 0; | |
113 | default: | |
114 | return -EINVAL; | |
3ffc2a90 | 115 | } |
11a843b7 JB |
116 | } |
117 | ||
118 | static void ieee80211_key_disable_hw_accel(struct ieee80211_key *key) | |
119 | { | |
dc822b5d JB |
120 | struct ieee80211_sub_if_data *sdata; |
121 | struct ieee80211_sta *sta; | |
11a843b7 JB |
122 | int ret; |
123 | ||
3b96766f JB |
124 | might_sleep(); |
125 | ||
db4d1169 | 126 | if (!key || !key->local->ops->set_key) |
11a843b7 JB |
127 | return; |
128 | ||
ad0e2b5a JB |
129 | assert_key_lock(key->local); |
130 | ||
131 | if (!(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)) | |
11a843b7 JB |
132 | return; |
133 | ||
dc822b5d JB |
134 | sta = get_sta_for_key(key); |
135 | sdata = key->sdata; | |
136 | ||
137 | if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) | |
138 | sdata = container_of(sdata->bss, | |
139 | struct ieee80211_sub_if_data, | |
140 | u.ap); | |
11a843b7 | 141 | |
12375ef9 | 142 | ret = drv_set_key(key->local, DISABLE_KEY, sdata, |
24487981 | 143 | sta, &key->conf); |
11a843b7 JB |
144 | |
145 | if (ret) | |
0fb9a9ec JP |
146 | wiphy_err(key->local->hw.wiphy, |
147 | "failed to remove key (%d, %pM) from hardware (%d)\n", | |
148 | key->conf.keyidx, sta ? sta->addr : bcast_addr, ret); | |
11a843b7 | 149 | |
3b96766f | 150 | key->flags &= ~KEY_FLAG_UPLOADED_TO_HARDWARE; |
3b96766f JB |
151 | } |
152 | ||
e31b8213 JB |
153 | void ieee80211_key_removed(struct ieee80211_key_conf *key_conf) |
154 | { | |
155 | struct ieee80211_key *key; | |
156 | ||
157 | key = container_of(key_conf, struct ieee80211_key, conf); | |
158 | ||
159 | might_sleep(); | |
160 | assert_key_lock(key->local); | |
161 | ||
162 | key->flags &= ~KEY_FLAG_UPLOADED_TO_HARDWARE; | |
163 | ||
164 | /* | |
165 | * Flush TX path to avoid attempts to use this key | |
166 | * after this function returns. Until then, drivers | |
167 | * must be prepared to handle the key. | |
168 | */ | |
169 | synchronize_rcu(); | |
170 | } | |
171 | EXPORT_SYMBOL_GPL(ieee80211_key_removed); | |
172 | ||
3b96766f JB |
173 | static void __ieee80211_set_default_key(struct ieee80211_sub_if_data *sdata, |
174 | int idx) | |
175 | { | |
176 | struct ieee80211_key *key = NULL; | |
177 | ||
ad0e2b5a JB |
178 | assert_key_lock(sdata->local); |
179 | ||
3b96766f JB |
180 | if (idx >= 0 && idx < NUM_DEFAULT_KEYS) |
181 | key = sdata->keys[idx]; | |
182 | ||
183 | rcu_assign_pointer(sdata->default_key, key); | |
184 | ||
ad0e2b5a JB |
185 | if (key) { |
186 | ieee80211_debugfs_key_remove_default(key->sdata); | |
187 | ieee80211_debugfs_key_add_default(key->sdata); | |
188 | } | |
3b96766f JB |
189 | } |
190 | ||
191 | void ieee80211_set_default_key(struct ieee80211_sub_if_data *sdata, int idx) | |
192 | { | |
ad0e2b5a | 193 | mutex_lock(&sdata->local->key_mtx); |
3b96766f | 194 | __ieee80211_set_default_key(sdata, idx); |
ad0e2b5a | 195 | mutex_unlock(&sdata->local->key_mtx); |
3b96766f JB |
196 | } |
197 | ||
3cfcf6ac JM |
198 | static void |
199 | __ieee80211_set_default_mgmt_key(struct ieee80211_sub_if_data *sdata, int idx) | |
200 | { | |
201 | struct ieee80211_key *key = NULL; | |
202 | ||
ad0e2b5a JB |
203 | assert_key_lock(sdata->local); |
204 | ||
3cfcf6ac JM |
205 | if (idx >= NUM_DEFAULT_KEYS && |
206 | idx < NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS) | |
207 | key = sdata->keys[idx]; | |
208 | ||
209 | rcu_assign_pointer(sdata->default_mgmt_key, key); | |
210 | ||
ad0e2b5a JB |
211 | if (key) { |
212 | ieee80211_debugfs_key_remove_mgmt_default(key->sdata); | |
213 | ieee80211_debugfs_key_add_mgmt_default(key->sdata); | |
214 | } | |
3cfcf6ac JM |
215 | } |
216 | ||
217 | void ieee80211_set_default_mgmt_key(struct ieee80211_sub_if_data *sdata, | |
218 | int idx) | |
219 | { | |
ad0e2b5a | 220 | mutex_lock(&sdata->local->key_mtx); |
3cfcf6ac | 221 | __ieee80211_set_default_mgmt_key(sdata, idx); |
ad0e2b5a | 222 | mutex_unlock(&sdata->local->key_mtx); |
3cfcf6ac JM |
223 | } |
224 | ||
3b96766f JB |
225 | |
226 | static void __ieee80211_key_replace(struct ieee80211_sub_if_data *sdata, | |
227 | struct sta_info *sta, | |
e31b8213 | 228 | bool pairwise, |
3b96766f JB |
229 | struct ieee80211_key *old, |
230 | struct ieee80211_key *new) | |
231 | { | |
3cfcf6ac | 232 | int idx, defkey, defmgmtkey; |
3b96766f JB |
233 | |
234 | if (new) | |
235 | list_add(&new->list, &sdata->key_list); | |
236 | ||
e31b8213 JB |
237 | if (sta && pairwise) { |
238 | rcu_assign_pointer(sta->ptk, new); | |
239 | } else if (sta) { | |
240 | if (old) | |
241 | idx = old->conf.keyidx; | |
242 | else | |
243 | idx = new->conf.keyidx; | |
244 | rcu_assign_pointer(sta->gtk[idx], new); | |
3b96766f JB |
245 | } else { |
246 | WARN_ON(new && old && new->conf.keyidx != old->conf.keyidx); | |
247 | ||
248 | if (old) | |
249 | idx = old->conf.keyidx; | |
250 | else | |
251 | idx = new->conf.keyidx; | |
252 | ||
253 | defkey = old && sdata->default_key == old; | |
3cfcf6ac | 254 | defmgmtkey = old && sdata->default_mgmt_key == old; |
3b96766f JB |
255 | |
256 | if (defkey && !new) | |
257 | __ieee80211_set_default_key(sdata, -1); | |
3cfcf6ac JM |
258 | if (defmgmtkey && !new) |
259 | __ieee80211_set_default_mgmt_key(sdata, -1); | |
3b96766f JB |
260 | |
261 | rcu_assign_pointer(sdata->keys[idx], new); | |
262 | if (defkey && new) | |
263 | __ieee80211_set_default_key(sdata, new->conf.keyidx); | |
3cfcf6ac JM |
264 | if (defmgmtkey && new) |
265 | __ieee80211_set_default_mgmt_key(sdata, | |
266 | new->conf.keyidx); | |
3b96766f JB |
267 | } |
268 | ||
269 | if (old) { | |
270 | /* | |
271 | * We'll use an empty list to indicate that the key | |
272 | * has already been removed. | |
273 | */ | |
274 | list_del_init(&old->list); | |
275 | } | |
11a843b7 JB |
276 | } |
277 | ||
97359d12 | 278 | struct ieee80211_key *ieee80211_key_alloc(u32 cipher, int idx, size_t key_len, |
faa8fdc8 JM |
279 | const u8 *key_data, |
280 | size_t seq_len, const u8 *seq) | |
1f5a7e47 JB |
281 | { |
282 | struct ieee80211_key *key; | |
1ac62ba7 | 283 | int i, j, err; |
1f5a7e47 | 284 | |
3cfcf6ac | 285 | BUG_ON(idx < 0 || idx >= NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS); |
11a843b7 JB |
286 | |
287 | key = kzalloc(sizeof(struct ieee80211_key) + key_len, GFP_KERNEL); | |
1f5a7e47 | 288 | if (!key) |
1ac62ba7 | 289 | return ERR_PTR(-ENOMEM); |
11a843b7 JB |
290 | |
291 | /* | |
292 | * Default to software encryption; we'll later upload the | |
293 | * key to the hardware if possible. | |
294 | */ | |
11a843b7 JB |
295 | key->conf.flags = 0; |
296 | key->flags = 0; | |
297 | ||
97359d12 | 298 | key->conf.cipher = cipher; |
11a843b7 JB |
299 | key->conf.keyidx = idx; |
300 | key->conf.keylen = key_len; | |
97359d12 JB |
301 | switch (cipher) { |
302 | case WLAN_CIPHER_SUITE_WEP40: | |
303 | case WLAN_CIPHER_SUITE_WEP104: | |
76708dee FF |
304 | key->conf.iv_len = WEP_IV_LEN; |
305 | key->conf.icv_len = WEP_ICV_LEN; | |
306 | break; | |
97359d12 | 307 | case WLAN_CIPHER_SUITE_TKIP: |
76708dee FF |
308 | key->conf.iv_len = TKIP_IV_LEN; |
309 | key->conf.icv_len = TKIP_ICV_LEN; | |
9f26a952 | 310 | if (seq) { |
faa8fdc8 JM |
311 | for (i = 0; i < NUM_RX_DATA_QUEUES; i++) { |
312 | key->u.tkip.rx[i].iv32 = | |
313 | get_unaligned_le32(&seq[2]); | |
314 | key->u.tkip.rx[i].iv16 = | |
315 | get_unaligned_le16(seq); | |
316 | } | |
317 | } | |
76708dee | 318 | break; |
97359d12 | 319 | case WLAN_CIPHER_SUITE_CCMP: |
76708dee FF |
320 | key->conf.iv_len = CCMP_HDR_LEN; |
321 | key->conf.icv_len = CCMP_MIC_LEN; | |
9f26a952 | 322 | if (seq) { |
9190252c | 323 | for (i = 0; i < NUM_RX_DATA_QUEUES + 1; i++) |
faa8fdc8 JM |
324 | for (j = 0; j < CCMP_PN_LEN; j++) |
325 | key->u.ccmp.rx_pn[i][j] = | |
326 | seq[CCMP_PN_LEN - j - 1]; | |
327 | } | |
11a843b7 JB |
328 | /* |
329 | * Initialize AES key state here as an optimization so that | |
330 | * it does not need to be initialized for every packet. | |
331 | */ | |
332 | key->u.ccmp.tfm = ieee80211_aes_key_setup_encrypt(key_data); | |
1ac62ba7 BH |
333 | if (IS_ERR(key->u.ccmp.tfm)) { |
334 | err = PTR_ERR(key->u.ccmp.tfm); | |
3b96766f | 335 | kfree(key); |
1ac62ba7 | 336 | key = ERR_PTR(err); |
11a843b7 | 337 | } |
60ae0f20 JB |
338 | break; |
339 | case WLAN_CIPHER_SUITE_AES_CMAC: | |
340 | key->conf.iv_len = 0; | |
341 | key->conf.icv_len = sizeof(struct ieee80211_mmie); | |
342 | if (seq) | |
343 | for (j = 0; j < 6; j++) | |
344 | key->u.aes_cmac.rx_pn[j] = seq[6 - j - 1]; | |
3cfcf6ac JM |
345 | /* |
346 | * Initialize AES key state here as an optimization so that | |
347 | * it does not need to be initialized for every packet. | |
348 | */ | |
349 | key->u.aes_cmac.tfm = | |
350 | ieee80211_aes_cmac_key_setup(key_data); | |
1ac62ba7 BH |
351 | if (IS_ERR(key->u.aes_cmac.tfm)) { |
352 | err = PTR_ERR(key->u.aes_cmac.tfm); | |
3cfcf6ac | 353 | kfree(key); |
1ac62ba7 | 354 | key = ERR_PTR(err); |
3cfcf6ac | 355 | } |
60ae0f20 | 356 | break; |
3cfcf6ac | 357 | } |
60ae0f20 JB |
358 | memcpy(key->conf.key, key_data, key_len); |
359 | INIT_LIST_HEAD(&key->list); | |
3cfcf6ac | 360 | |
db4d1169 JB |
361 | return key; |
362 | } | |
11a843b7 | 363 | |
ad0e2b5a JB |
364 | static void __ieee80211_key_destroy(struct ieee80211_key *key) |
365 | { | |
366 | if (!key) | |
367 | return; | |
368 | ||
32162a4d JM |
369 | if (key->local) |
370 | ieee80211_key_disable_hw_accel(key); | |
ad0e2b5a | 371 | |
97359d12 | 372 | if (key->conf.cipher == WLAN_CIPHER_SUITE_CCMP) |
ad0e2b5a | 373 | ieee80211_aes_key_free(key->u.ccmp.tfm); |
97359d12 | 374 | if (key->conf.cipher == WLAN_CIPHER_SUITE_AES_CMAC) |
ad0e2b5a | 375 | ieee80211_aes_cmac_key_free(key->u.aes_cmac.tfm); |
32162a4d JM |
376 | if (key->local) |
377 | ieee80211_debugfs_key_remove(key); | |
ad0e2b5a JB |
378 | |
379 | kfree(key); | |
380 | } | |
381 | ||
3ffc2a90 JB |
382 | int ieee80211_key_link(struct ieee80211_key *key, |
383 | struct ieee80211_sub_if_data *sdata, | |
384 | struct sta_info *sta) | |
db4d1169 JB |
385 | { |
386 | struct ieee80211_key *old_key; | |
3ffc2a90 | 387 | int idx, ret; |
e31b8213 | 388 | bool pairwise = key->conf.flags & IEEE80211_KEY_FLAG_PAIRWISE; |
db4d1169 | 389 | |
db4d1169 JB |
390 | BUG_ON(!sdata); |
391 | BUG_ON(!key); | |
392 | ||
393 | idx = key->conf.keyidx; | |
394 | key->local = sdata->local; | |
395 | key->sdata = sdata; | |
396 | key->sta = sta; | |
397 | ||
11a843b7 | 398 | if (sta) { |
11a843b7 JB |
399 | /* |
400 | * some hardware cannot handle TKIP with QoS, so | |
401 | * we indicate whether QoS could be in use. | |
402 | */ | |
07346f81 | 403 | if (test_sta_flags(sta, WLAN_STA_WME)) |
11a843b7 JB |
404 | key->conf.flags |= IEEE80211_KEY_FLAG_WMM_STA; |
405 | } else { | |
05c914fe | 406 | if (sdata->vif.type == NL80211_IFTYPE_STATION) { |
11a843b7 JB |
407 | struct sta_info *ap; |
408 | ||
3b96766f JB |
409 | /* |
410 | * We're getting a sta pointer in, | |
411 | * so must be under RCU read lock. | |
412 | */ | |
d0709a65 | 413 | |
11a843b7 | 414 | /* same here, the AP could be using QoS */ |
abe60632 | 415 | ap = sta_info_get(key->sdata, key->sdata->u.mgd.bssid); |
11a843b7 | 416 | if (ap) { |
07346f81 | 417 | if (test_sta_flags(ap, WLAN_STA_WME)) |
11a843b7 JB |
418 | key->conf.flags |= |
419 | IEEE80211_KEY_FLAG_WMM_STA; | |
11a843b7 JB |
420 | } |
421 | } | |
11a843b7 JB |
422 | } |
423 | ||
ad0e2b5a | 424 | mutex_lock(&sdata->local->key_mtx); |
3b96766f | 425 | |
e31b8213 JB |
426 | if (sta && pairwise) |
427 | old_key = sta->ptk; | |
428 | else if (sta) | |
429 | old_key = sta->gtk[idx]; | |
d4e46a3d | 430 | else |
db4d1169 JB |
431 | old_key = sdata->keys[idx]; |
432 | ||
e31b8213 | 433 | __ieee80211_key_replace(sdata, sta, pairwise, old_key, key); |
ad0e2b5a | 434 | __ieee80211_key_destroy(old_key); |
d4e46a3d | 435 | |
ad0e2b5a | 436 | ieee80211_debugfs_key_add(key); |
db4d1169 | 437 | |
3ffc2a90 | 438 | ret = ieee80211_key_enable_hw_accel(key); |
523d2f69 | 439 | |
ad0e2b5a | 440 | mutex_unlock(&sdata->local->key_mtx); |
3ffc2a90 JB |
441 | |
442 | return ret; | |
1f5a7e47 JB |
443 | } |
444 | ||
3a245766 | 445 | static void __ieee80211_key_free(struct ieee80211_key *key) |
1f5a7e47 | 446 | { |
3b96766f JB |
447 | /* |
448 | * Replace key with nothingness if it was ever used. | |
449 | */ | |
3a245766 | 450 | if (key->sdata) |
3b96766f | 451 | __ieee80211_key_replace(key->sdata, key->sta, |
e31b8213 JB |
452 | key->conf.flags & IEEE80211_KEY_FLAG_PAIRWISE, |
453 | key, NULL); | |
ad0e2b5a | 454 | __ieee80211_key_destroy(key); |
3b96766f | 455 | } |
d4e46a3d | 456 | |
32162a4d JM |
457 | void ieee80211_key_free(struct ieee80211_local *local, |
458 | struct ieee80211_key *key) | |
3b96766f | 459 | { |
3a245766 | 460 | if (!key) |
3b96766f JB |
461 | return; |
462 | ||
ad0e2b5a | 463 | mutex_lock(&local->key_mtx); |
3a245766 | 464 | __ieee80211_key_free(key); |
ad0e2b5a | 465 | mutex_unlock(&local->key_mtx); |
3a245766 JB |
466 | } |
467 | ||
ad0e2b5a | 468 | void ieee80211_enable_keys(struct ieee80211_sub_if_data *sdata) |
3a245766 JB |
469 | { |
470 | struct ieee80211_key *key; | |
11a843b7 | 471 | |
3a245766 | 472 | ASSERT_RTNL(); |
11a843b7 | 473 | |
9607e6b6 | 474 | if (WARN_ON(!ieee80211_sdata_running(sdata))) |
3a245766 | 475 | return; |
11a843b7 | 476 | |
ad0e2b5a | 477 | mutex_lock(&sdata->local->key_mtx); |
11a843b7 | 478 | |
ad0e2b5a JB |
479 | list_for_each_entry(key, &sdata->key_list, list) |
480 | ieee80211_key_enable_hw_accel(key); | |
3b96766f | 481 | |
ad0e2b5a | 482 | mutex_unlock(&sdata->local->key_mtx); |
11a843b7 JB |
483 | } |
484 | ||
ad0e2b5a | 485 | void ieee80211_disable_keys(struct ieee80211_sub_if_data *sdata) |
11a843b7 JB |
486 | { |
487 | struct ieee80211_key *key; | |
488 | ||
ad0e2b5a | 489 | ASSERT_RTNL(); |
db4d1169 | 490 | |
ad0e2b5a | 491 | mutex_lock(&sdata->local->key_mtx); |
11a843b7 | 492 | |
ad0e2b5a JB |
493 | list_for_each_entry(key, &sdata->key_list, list) |
494 | ieee80211_key_disable_hw_accel(key); | |
11a843b7 | 495 | |
ad0e2b5a | 496 | mutex_unlock(&sdata->local->key_mtx); |
3b96766f | 497 | } |
11a843b7 | 498 | |
3b96766f JB |
499 | void ieee80211_free_keys(struct ieee80211_sub_if_data *sdata) |
500 | { | |
501 | struct ieee80211_key *key, *tmp; | |
db4d1169 | 502 | |
ad0e2b5a | 503 | mutex_lock(&sdata->local->key_mtx); |
3b96766f JB |
504 | |
505 | ieee80211_debugfs_key_remove_default(sdata); | |
3cfcf6ac | 506 | ieee80211_debugfs_key_remove_mgmt_default(sdata); |
3b96766f JB |
507 | |
508 | list_for_each_entry_safe(key, tmp, &sdata->key_list, list) | |
3a245766 | 509 | __ieee80211_key_free(key); |
3b96766f | 510 | |
ad0e2b5a | 511 | mutex_unlock(&sdata->local->key_mtx); |
11a843b7 | 512 | } |