Commit | Line | Data |
---|---|---|
f0706e82 JB |
1 | /* |
2 | * mac80211 configuration hooks for cfg80211 | |
3 | * | |
62da92fb | 4 | * Copyright 2006, 2007 Johannes Berg <johannes@sipsolutions.net> |
f0706e82 JB |
5 | * |
6 | * This file is GPLv2 as found in COPYING. | |
7 | */ | |
8 | ||
e8cbb4cb | 9 | #include <linux/ieee80211.h> |
f0706e82 JB |
10 | #include <linux/nl80211.h> |
11 | #include <linux/rtnetlink.h> | |
881d966b | 12 | #include <net/net_namespace.h> |
5dfdaf58 | 13 | #include <linux/rcupdate.h> |
f0706e82 JB |
14 | #include <net/cfg80211.h> |
15 | #include "ieee80211_i.h" | |
e0eb6859 | 16 | #include "cfg.h" |
2c8dccc7 | 17 | #include "rate.h" |
c5dd9c2b | 18 | #include "mesh.h" |
c5dd9c2b | 19 | |
b2e1b302 LR |
20 | struct ieee80211_hw *wiphy_to_hw(struct wiphy *wiphy) |
21 | { | |
22 | struct ieee80211_local *local = wiphy_priv(wiphy); | |
23 | return &local->hw; | |
24 | } | |
25 | EXPORT_SYMBOL(wiphy_to_hw); | |
26 | ||
05c914fe | 27 | static bool nl80211_type_check(enum nl80211_iftype type) |
42613db7 JB |
28 | { |
29 | switch (type) { | |
42613db7 | 30 | case NL80211_IFTYPE_ADHOC: |
42613db7 | 31 | case NL80211_IFTYPE_STATION: |
42613db7 | 32 | case NL80211_IFTYPE_MONITOR: |
c5dd9c2b LCC |
33 | #ifdef CONFIG_MAC80211_MESH |
34 | case NL80211_IFTYPE_MESH_POINT: | |
c5dd9c2b | 35 | #endif |
b454048c | 36 | case NL80211_IFTYPE_WDS: |
05c914fe | 37 | return true; |
42613db7 | 38 | default: |
05c914fe | 39 | return false; |
42613db7 JB |
40 | } |
41 | } | |
42 | ||
f0706e82 | 43 | static int ieee80211_add_iface(struct wiphy *wiphy, char *name, |
2ec600d6 LCC |
44 | enum nl80211_iftype type, u32 *flags, |
45 | struct vif_params *params) | |
f0706e82 JB |
46 | { |
47 | struct ieee80211_local *local = wiphy_priv(wiphy); | |
8cc9a739 MW |
48 | struct net_device *dev; |
49 | struct ieee80211_sub_if_data *sdata; | |
50 | int err; | |
f0706e82 | 51 | |
05c914fe | 52 | if (!nl80211_type_check(type)) |
f0706e82 | 53 | return -EINVAL; |
f0706e82 | 54 | |
05c914fe JB |
55 | err = ieee80211_if_add(local, name, &dev, type, params); |
56 | if (err || type != NL80211_IFTYPE_MONITOR || !flags) | |
8cc9a739 MW |
57 | return err; |
58 | ||
59 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
60 | sdata->u.mntr_flags = *flags; | |
61 | return 0; | |
f0706e82 JB |
62 | } |
63 | ||
64 | static int ieee80211_del_iface(struct wiphy *wiphy, int ifindex) | |
65 | { | |
f0706e82 | 66 | struct net_device *dev; |
f698d856 | 67 | struct ieee80211_sub_if_data *sdata; |
f0706e82 | 68 | |
42613db7 JB |
69 | /* we're under RTNL */ |
70 | dev = __dev_get_by_index(&init_net, ifindex); | |
f0706e82 | 71 | if (!dev) |
75636525 | 72 | return -ENODEV; |
f0706e82 | 73 | |
f698d856 JBG |
74 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
75 | ||
76 | ieee80211_if_remove(sdata); | |
f0706e82 | 77 | |
75636525 | 78 | return 0; |
f0706e82 JB |
79 | } |
80 | ||
42613db7 | 81 | static int ieee80211_change_iface(struct wiphy *wiphy, int ifindex, |
2ec600d6 LCC |
82 | enum nl80211_iftype type, u32 *flags, |
83 | struct vif_params *params) | |
42613db7 | 84 | { |
42613db7 | 85 | struct net_device *dev; |
42613db7 | 86 | struct ieee80211_sub_if_data *sdata; |
f3947e2d | 87 | int ret; |
42613db7 | 88 | |
42613db7 JB |
89 | /* we're under RTNL */ |
90 | dev = __dev_get_by_index(&init_net, ifindex); | |
91 | if (!dev) | |
92 | return -ENODEV; | |
93 | ||
05c914fe | 94 | if (!nl80211_type_check(type)) |
42613db7 JB |
95 | return -EINVAL; |
96 | ||
97 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
98 | ||
05c914fe | 99 | ret = ieee80211_if_change_type(sdata, type); |
f3947e2d JB |
100 | if (ret) |
101 | return ret; | |
42613db7 | 102 | |
f8b25cda JB |
103 | if (netif_running(sdata->dev)) |
104 | return -EBUSY; | |
105 | ||
902acc78 | 106 | if (ieee80211_vif_is_mesh(&sdata->vif) && params->mesh_id_len) |
472dbc45 JB |
107 | ieee80211_sdata_set_mesh_id(sdata, |
108 | params->mesh_id_len, | |
109 | params->mesh_id); | |
c5dd9c2b | 110 | |
05c914fe | 111 | if (sdata->vif.type != NL80211_IFTYPE_MONITOR || !flags) |
8cc9a739 MW |
112 | return 0; |
113 | ||
114 | sdata->u.mntr_flags = *flags; | |
42613db7 JB |
115 | return 0; |
116 | } | |
117 | ||
e8cbb4cb JB |
118 | static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev, |
119 | u8 key_idx, u8 *mac_addr, | |
120 | struct key_params *params) | |
121 | { | |
122 | struct ieee80211_sub_if_data *sdata; | |
123 | struct sta_info *sta = NULL; | |
124 | enum ieee80211_key_alg alg; | |
db4d1169 | 125 | struct ieee80211_key *key; |
3b96766f | 126 | int err; |
e8cbb4cb JB |
127 | |
128 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
129 | ||
130 | switch (params->cipher) { | |
131 | case WLAN_CIPHER_SUITE_WEP40: | |
132 | case WLAN_CIPHER_SUITE_WEP104: | |
133 | alg = ALG_WEP; | |
134 | break; | |
135 | case WLAN_CIPHER_SUITE_TKIP: | |
136 | alg = ALG_TKIP; | |
137 | break; | |
138 | case WLAN_CIPHER_SUITE_CCMP: | |
139 | alg = ALG_CCMP; | |
140 | break; | |
141 | default: | |
142 | return -EINVAL; | |
143 | } | |
144 | ||
db4d1169 JB |
145 | key = ieee80211_key_alloc(alg, key_idx, params->key_len, params->key); |
146 | if (!key) | |
147 | return -ENOMEM; | |
148 | ||
3b96766f JB |
149 | rcu_read_lock(); |
150 | ||
e8cbb4cb JB |
151 | if (mac_addr) { |
152 | sta = sta_info_get(sdata->local, mac_addr); | |
db4d1169 JB |
153 | if (!sta) { |
154 | ieee80211_key_free(key); | |
3b96766f JB |
155 | err = -ENOENT; |
156 | goto out_unlock; | |
db4d1169 | 157 | } |
e8cbb4cb JB |
158 | } |
159 | ||
db4d1169 JB |
160 | ieee80211_key_link(key, sdata, sta); |
161 | ||
3b96766f JB |
162 | err = 0; |
163 | out_unlock: | |
164 | rcu_read_unlock(); | |
165 | ||
166 | return err; | |
e8cbb4cb JB |
167 | } |
168 | ||
169 | static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev, | |
170 | u8 key_idx, u8 *mac_addr) | |
171 | { | |
172 | struct ieee80211_sub_if_data *sdata; | |
173 | struct sta_info *sta; | |
174 | int ret; | |
175 | ||
176 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
177 | ||
3b96766f JB |
178 | rcu_read_lock(); |
179 | ||
e8cbb4cb | 180 | if (mac_addr) { |
3b96766f JB |
181 | ret = -ENOENT; |
182 | ||
e8cbb4cb JB |
183 | sta = sta_info_get(sdata->local, mac_addr); |
184 | if (!sta) | |
3b96766f | 185 | goto out_unlock; |
e8cbb4cb | 186 | |
db4d1169 | 187 | if (sta->key) { |
d0709a65 | 188 | ieee80211_key_free(sta->key); |
db4d1169 | 189 | WARN_ON(sta->key); |
3b96766f JB |
190 | ret = 0; |
191 | } | |
e8cbb4cb | 192 | |
3b96766f | 193 | goto out_unlock; |
e8cbb4cb JB |
194 | } |
195 | ||
3b96766f JB |
196 | if (!sdata->keys[key_idx]) { |
197 | ret = -ENOENT; | |
198 | goto out_unlock; | |
199 | } | |
e8cbb4cb | 200 | |
d0709a65 | 201 | ieee80211_key_free(sdata->keys[key_idx]); |
db4d1169 | 202 | WARN_ON(sdata->keys[key_idx]); |
e8cbb4cb | 203 | |
3b96766f JB |
204 | ret = 0; |
205 | out_unlock: | |
206 | rcu_read_unlock(); | |
207 | ||
208 | return ret; | |
e8cbb4cb JB |
209 | } |
210 | ||
62da92fb JB |
211 | static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev, |
212 | u8 key_idx, u8 *mac_addr, void *cookie, | |
213 | void (*callback)(void *cookie, | |
214 | struct key_params *params)) | |
215 | { | |
14db74bc | 216 | struct ieee80211_sub_if_data *sdata; |
62da92fb JB |
217 | struct sta_info *sta = NULL; |
218 | u8 seq[6] = {0}; | |
219 | struct key_params params; | |
220 | struct ieee80211_key *key; | |
221 | u32 iv32; | |
222 | u16 iv16; | |
223 | int err = -ENOENT; | |
224 | ||
14db74bc JB |
225 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
226 | ||
3b96766f JB |
227 | rcu_read_lock(); |
228 | ||
62da92fb JB |
229 | if (mac_addr) { |
230 | sta = sta_info_get(sdata->local, mac_addr); | |
231 | if (!sta) | |
232 | goto out; | |
233 | ||
234 | key = sta->key; | |
235 | } else | |
236 | key = sdata->keys[key_idx]; | |
237 | ||
238 | if (!key) | |
239 | goto out; | |
240 | ||
241 | memset(¶ms, 0, sizeof(params)); | |
242 | ||
243 | switch (key->conf.alg) { | |
244 | case ALG_TKIP: | |
245 | params.cipher = WLAN_CIPHER_SUITE_TKIP; | |
246 | ||
b0f76b33 HH |
247 | iv32 = key->u.tkip.tx.iv32; |
248 | iv16 = key->u.tkip.tx.iv16; | |
62da92fb JB |
249 | |
250 | if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE && | |
251 | sdata->local->ops->get_tkip_seq) | |
252 | sdata->local->ops->get_tkip_seq( | |
253 | local_to_hw(sdata->local), | |
254 | key->conf.hw_key_idx, | |
255 | &iv32, &iv16); | |
256 | ||
257 | seq[0] = iv16 & 0xff; | |
258 | seq[1] = (iv16 >> 8) & 0xff; | |
259 | seq[2] = iv32 & 0xff; | |
260 | seq[3] = (iv32 >> 8) & 0xff; | |
261 | seq[4] = (iv32 >> 16) & 0xff; | |
262 | seq[5] = (iv32 >> 24) & 0xff; | |
263 | params.seq = seq; | |
264 | params.seq_len = 6; | |
265 | break; | |
266 | case ALG_CCMP: | |
267 | params.cipher = WLAN_CIPHER_SUITE_CCMP; | |
268 | seq[0] = key->u.ccmp.tx_pn[5]; | |
269 | seq[1] = key->u.ccmp.tx_pn[4]; | |
270 | seq[2] = key->u.ccmp.tx_pn[3]; | |
271 | seq[3] = key->u.ccmp.tx_pn[2]; | |
272 | seq[4] = key->u.ccmp.tx_pn[1]; | |
273 | seq[5] = key->u.ccmp.tx_pn[0]; | |
274 | params.seq = seq; | |
275 | params.seq_len = 6; | |
276 | break; | |
277 | case ALG_WEP: | |
278 | if (key->conf.keylen == 5) | |
279 | params.cipher = WLAN_CIPHER_SUITE_WEP40; | |
280 | else | |
281 | params.cipher = WLAN_CIPHER_SUITE_WEP104; | |
282 | break; | |
283 | } | |
284 | ||
285 | params.key = key->conf.key; | |
286 | params.key_len = key->conf.keylen; | |
287 | ||
288 | callback(cookie, ¶ms); | |
289 | err = 0; | |
290 | ||
291 | out: | |
3b96766f | 292 | rcu_read_unlock(); |
62da92fb JB |
293 | return err; |
294 | } | |
295 | ||
e8cbb4cb JB |
296 | static int ieee80211_config_default_key(struct wiphy *wiphy, |
297 | struct net_device *dev, | |
298 | u8 key_idx) | |
299 | { | |
300 | struct ieee80211_sub_if_data *sdata; | |
301 | ||
3b96766f JB |
302 | rcu_read_lock(); |
303 | ||
e8cbb4cb JB |
304 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
305 | ieee80211_set_default_key(sdata, key_idx); | |
306 | ||
3b96766f JB |
307 | rcu_read_unlock(); |
308 | ||
e8cbb4cb JB |
309 | return 0; |
310 | } | |
311 | ||
c5dd9c2b LCC |
312 | static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo) |
313 | { | |
d0709a65 | 314 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
c5dd9c2b LCC |
315 | |
316 | sinfo->filled = STATION_INFO_INACTIVE_TIME | | |
317 | STATION_INFO_RX_BYTES | | |
318 | STATION_INFO_TX_BYTES; | |
319 | ||
320 | sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx); | |
321 | sinfo->rx_bytes = sta->rx_bytes; | |
322 | sinfo->tx_bytes = sta->tx_bytes; | |
323 | ||
902acc78 | 324 | if (ieee80211_vif_is_mesh(&sdata->vif)) { |
c5dd9c2b | 325 | #ifdef CONFIG_MAC80211_MESH |
c5dd9c2b LCC |
326 | sinfo->filled |= STATION_INFO_LLID | |
327 | STATION_INFO_PLID | | |
328 | STATION_INFO_PLINK_STATE; | |
329 | ||
330 | sinfo->llid = le16_to_cpu(sta->llid); | |
331 | sinfo->plid = le16_to_cpu(sta->plid); | |
332 | sinfo->plink_state = sta->plink_state; | |
c5dd9c2b | 333 | #endif |
902acc78 | 334 | } |
c5dd9c2b LCC |
335 | } |
336 | ||
337 | ||
338 | static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev, | |
339 | int idx, u8 *mac, struct station_info *sinfo) | |
340 | { | |
341 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
342 | struct sta_info *sta; | |
d0709a65 JB |
343 | int ret = -ENOENT; |
344 | ||
345 | rcu_read_lock(); | |
c5dd9c2b LCC |
346 | |
347 | sta = sta_info_get_by_idx(local, idx, dev); | |
d0709a65 JB |
348 | if (sta) { |
349 | ret = 0; | |
17741cdc | 350 | memcpy(mac, sta->sta.addr, ETH_ALEN); |
d0709a65 JB |
351 | sta_set_sinfo(sta, sinfo); |
352 | } | |
c5dd9c2b | 353 | |
d0709a65 | 354 | rcu_read_unlock(); |
c5dd9c2b | 355 | |
d0709a65 | 356 | return ret; |
c5dd9c2b LCC |
357 | } |
358 | ||
7bbdd2d9 | 359 | static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev, |
2ec600d6 | 360 | u8 *mac, struct station_info *sinfo) |
7bbdd2d9 JB |
361 | { |
362 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
363 | struct sta_info *sta; | |
d0709a65 | 364 | int ret = -ENOENT; |
7bbdd2d9 | 365 | |
d0709a65 | 366 | rcu_read_lock(); |
7bbdd2d9 JB |
367 | |
368 | /* XXX: verify sta->dev == dev */ | |
7bbdd2d9 | 369 | |
d0709a65 JB |
370 | sta = sta_info_get(local, mac); |
371 | if (sta) { | |
372 | ret = 0; | |
373 | sta_set_sinfo(sta, sinfo); | |
374 | } | |
375 | ||
376 | rcu_read_unlock(); | |
377 | ||
378 | return ret; | |
7bbdd2d9 JB |
379 | } |
380 | ||
5dfdaf58 JB |
381 | /* |
382 | * This handles both adding a beacon and setting new beacon info | |
383 | */ | |
384 | static int ieee80211_config_beacon(struct ieee80211_sub_if_data *sdata, | |
385 | struct beacon_parameters *params) | |
386 | { | |
387 | struct beacon_data *new, *old; | |
388 | int new_head_len, new_tail_len; | |
389 | int size; | |
390 | int err = -EINVAL; | |
391 | ||
392 | old = sdata->u.ap.beacon; | |
393 | ||
394 | /* head must not be zero-length */ | |
395 | if (params->head && !params->head_len) | |
396 | return -EINVAL; | |
397 | ||
398 | /* | |
399 | * This is a kludge. beacon interval should really be part | |
400 | * of the beacon information. | |
401 | */ | |
402 | if (params->interval) { | |
403 | sdata->local->hw.conf.beacon_int = params->interval; | |
404 | if (ieee80211_hw_config(sdata->local)) | |
405 | return -EINVAL; | |
406 | /* | |
407 | * We updated some parameter so if below bails out | |
408 | * it's not an error. | |
409 | */ | |
410 | err = 0; | |
411 | } | |
412 | ||
413 | /* Need to have a beacon head if we don't have one yet */ | |
414 | if (!params->head && !old) | |
415 | return err; | |
416 | ||
417 | /* sorry, no way to start beaconing without dtim period */ | |
418 | if (!params->dtim_period && !old) | |
419 | return err; | |
420 | ||
421 | /* new or old head? */ | |
422 | if (params->head) | |
423 | new_head_len = params->head_len; | |
424 | else | |
425 | new_head_len = old->head_len; | |
426 | ||
427 | /* new or old tail? */ | |
428 | if (params->tail || !old) | |
429 | /* params->tail_len will be zero for !params->tail */ | |
430 | new_tail_len = params->tail_len; | |
431 | else | |
432 | new_tail_len = old->tail_len; | |
433 | ||
434 | size = sizeof(*new) + new_head_len + new_tail_len; | |
435 | ||
436 | new = kzalloc(size, GFP_KERNEL); | |
437 | if (!new) | |
438 | return -ENOMEM; | |
439 | ||
440 | /* start filling the new info now */ | |
441 | ||
442 | /* new or old dtim period? */ | |
443 | if (params->dtim_period) | |
444 | new->dtim_period = params->dtim_period; | |
445 | else | |
446 | new->dtim_period = old->dtim_period; | |
447 | ||
448 | /* | |
449 | * pointers go into the block we allocated, | |
450 | * memory is | beacon_data | head | tail | | |
451 | */ | |
452 | new->head = ((u8 *) new) + sizeof(*new); | |
453 | new->tail = new->head + new_head_len; | |
454 | new->head_len = new_head_len; | |
455 | new->tail_len = new_tail_len; | |
456 | ||
457 | /* copy in head */ | |
458 | if (params->head) | |
459 | memcpy(new->head, params->head, new_head_len); | |
460 | else | |
461 | memcpy(new->head, old->head, new_head_len); | |
462 | ||
463 | /* copy in optional tail */ | |
464 | if (params->tail) | |
465 | memcpy(new->tail, params->tail, new_tail_len); | |
466 | else | |
467 | if (old) | |
468 | memcpy(new->tail, old->tail, new_tail_len); | |
469 | ||
470 | rcu_assign_pointer(sdata->u.ap.beacon, new); | |
471 | ||
472 | synchronize_rcu(); | |
473 | ||
474 | kfree(old); | |
475 | ||
9d139c81 | 476 | return ieee80211_if_config(sdata, IEEE80211_IFCC_BEACON); |
5dfdaf58 JB |
477 | } |
478 | ||
479 | static int ieee80211_add_beacon(struct wiphy *wiphy, struct net_device *dev, | |
480 | struct beacon_parameters *params) | |
481 | { | |
14db74bc | 482 | struct ieee80211_sub_if_data *sdata; |
5dfdaf58 JB |
483 | struct beacon_data *old; |
484 | ||
14db74bc JB |
485 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
486 | ||
05c914fe | 487 | if (sdata->vif.type != NL80211_IFTYPE_AP) |
5dfdaf58 JB |
488 | return -EINVAL; |
489 | ||
490 | old = sdata->u.ap.beacon; | |
491 | ||
492 | if (old) | |
493 | return -EALREADY; | |
494 | ||
495 | return ieee80211_config_beacon(sdata, params); | |
496 | } | |
497 | ||
498 | static int ieee80211_set_beacon(struct wiphy *wiphy, struct net_device *dev, | |
499 | struct beacon_parameters *params) | |
500 | { | |
14db74bc | 501 | struct ieee80211_sub_if_data *sdata; |
5dfdaf58 JB |
502 | struct beacon_data *old; |
503 | ||
14db74bc JB |
504 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
505 | ||
05c914fe | 506 | if (sdata->vif.type != NL80211_IFTYPE_AP) |
5dfdaf58 JB |
507 | return -EINVAL; |
508 | ||
509 | old = sdata->u.ap.beacon; | |
510 | ||
511 | if (!old) | |
512 | return -ENOENT; | |
513 | ||
514 | return ieee80211_config_beacon(sdata, params); | |
515 | } | |
516 | ||
517 | static int ieee80211_del_beacon(struct wiphy *wiphy, struct net_device *dev) | |
518 | { | |
14db74bc | 519 | struct ieee80211_sub_if_data *sdata; |
5dfdaf58 JB |
520 | struct beacon_data *old; |
521 | ||
14db74bc JB |
522 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
523 | ||
05c914fe | 524 | if (sdata->vif.type != NL80211_IFTYPE_AP) |
5dfdaf58 JB |
525 | return -EINVAL; |
526 | ||
527 | old = sdata->u.ap.beacon; | |
528 | ||
529 | if (!old) | |
530 | return -ENOENT; | |
531 | ||
532 | rcu_assign_pointer(sdata->u.ap.beacon, NULL); | |
533 | synchronize_rcu(); | |
534 | kfree(old); | |
535 | ||
9d139c81 | 536 | return ieee80211_if_config(sdata, IEEE80211_IFCC_BEACON); |
5dfdaf58 JB |
537 | } |
538 | ||
4fd6931e JB |
539 | /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */ |
540 | struct iapp_layer2_update { | |
541 | u8 da[ETH_ALEN]; /* broadcast */ | |
542 | u8 sa[ETH_ALEN]; /* STA addr */ | |
543 | __be16 len; /* 6 */ | |
544 | u8 dsap; /* 0 */ | |
545 | u8 ssap; /* 0 */ | |
546 | u8 control; | |
547 | u8 xid_info[3]; | |
548 | } __attribute__ ((packed)); | |
549 | ||
550 | static void ieee80211_send_layer2_update(struct sta_info *sta) | |
551 | { | |
552 | struct iapp_layer2_update *msg; | |
553 | struct sk_buff *skb; | |
554 | ||
555 | /* Send Level 2 Update Frame to update forwarding tables in layer 2 | |
556 | * bridge devices */ | |
557 | ||
558 | skb = dev_alloc_skb(sizeof(*msg)); | |
559 | if (!skb) | |
560 | return; | |
561 | msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg)); | |
562 | ||
563 | /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID) | |
564 | * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */ | |
565 | ||
566 | memset(msg->da, 0xff, ETH_ALEN); | |
17741cdc | 567 | memcpy(msg->sa, sta->sta.addr, ETH_ALEN); |
4fd6931e JB |
568 | msg->len = htons(6); |
569 | msg->dsap = 0; | |
570 | msg->ssap = 0x01; /* NULL LSAP, CR Bit: Response */ | |
571 | msg->control = 0xaf; /* XID response lsb.1111F101. | |
572 | * F=0 (no poll command; unsolicited frame) */ | |
573 | msg->xid_info[0] = 0x81; /* XID format identifier */ | |
574 | msg->xid_info[1] = 1; /* LLC types/classes: Type 1 LLC */ | |
575 | msg->xid_info[2] = 0; /* XID sender's receive window size (RW) */ | |
576 | ||
d0709a65 JB |
577 | skb->dev = sta->sdata->dev; |
578 | skb->protocol = eth_type_trans(skb, sta->sdata->dev); | |
4fd6931e JB |
579 | memset(skb->cb, 0, sizeof(skb->cb)); |
580 | netif_rx(skb); | |
581 | } | |
582 | ||
583 | static void sta_apply_parameters(struct ieee80211_local *local, | |
584 | struct sta_info *sta, | |
585 | struct station_parameters *params) | |
586 | { | |
587 | u32 rates; | |
588 | int i, j; | |
8318d78a | 589 | struct ieee80211_supported_band *sband; |
d0709a65 | 590 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
4fd6931e | 591 | |
73651ee6 JB |
592 | /* |
593 | * FIXME: updating the flags is racy when this function is | |
594 | * called from ieee80211_change_station(), this will | |
595 | * be resolved in a future patch. | |
596 | */ | |
597 | ||
4fd6931e | 598 | if (params->station_flags & STATION_FLAG_CHANGED) { |
07346f81 | 599 | spin_lock_bh(&sta->lock); |
4fd6931e JB |
600 | sta->flags &= ~WLAN_STA_AUTHORIZED; |
601 | if (params->station_flags & STATION_FLAG_AUTHORIZED) | |
602 | sta->flags |= WLAN_STA_AUTHORIZED; | |
603 | ||
604 | sta->flags &= ~WLAN_STA_SHORT_PREAMBLE; | |
605 | if (params->station_flags & STATION_FLAG_SHORT_PREAMBLE) | |
606 | sta->flags |= WLAN_STA_SHORT_PREAMBLE; | |
607 | ||
608 | sta->flags &= ~WLAN_STA_WME; | |
609 | if (params->station_flags & STATION_FLAG_WME) | |
610 | sta->flags |= WLAN_STA_WME; | |
07346f81 | 611 | spin_unlock_bh(&sta->lock); |
4fd6931e JB |
612 | } |
613 | ||
73651ee6 JB |
614 | /* |
615 | * FIXME: updating the following information is racy when this | |
616 | * function is called from ieee80211_change_station(). | |
617 | * However, all this information should be static so | |
618 | * maybe we should just reject attemps to change it. | |
619 | */ | |
620 | ||
4fd6931e | 621 | if (params->aid) { |
17741cdc JB |
622 | sta->sta.aid = params->aid; |
623 | if (sta->sta.aid > IEEE80211_MAX_AID) | |
624 | sta->sta.aid = 0; /* XXX: should this be an error? */ | |
4fd6931e JB |
625 | } |
626 | ||
627 | if (params->listen_interval >= 0) | |
628 | sta->listen_interval = params->listen_interval; | |
629 | ||
630 | if (params->supported_rates) { | |
631 | rates = 0; | |
8318d78a JB |
632 | sband = local->hw.wiphy->bands[local->oper_channel->band]; |
633 | ||
4fd6931e JB |
634 | for (i = 0; i < params->supported_rates_len; i++) { |
635 | int rate = (params->supported_rates[i] & 0x7f) * 5; | |
8318d78a JB |
636 | for (j = 0; j < sband->n_bitrates; j++) { |
637 | if (sband->bitrates[j].bitrate == rate) | |
4fd6931e JB |
638 | rates |= BIT(j); |
639 | } | |
640 | } | |
323ce79a | 641 | sta->sta.supp_rates[local->oper_channel->band] = rates; |
4fd6931e | 642 | } |
c5dd9c2b | 643 | |
36aedc90 JM |
644 | if (params->ht_capa) { |
645 | ieee80211_ht_cap_ie_to_ht_info(params->ht_capa, | |
687c7c08 | 646 | &sta->sta.ht_info); |
36aedc90 JM |
647 | } |
648 | ||
902acc78 | 649 | if (ieee80211_vif_is_mesh(&sdata->vif) && params->plink_action) { |
c5dd9c2b LCC |
650 | switch (params->plink_action) { |
651 | case PLINK_ACTION_OPEN: | |
652 | mesh_plink_open(sta); | |
653 | break; | |
654 | case PLINK_ACTION_BLOCK: | |
655 | mesh_plink_block(sta); | |
656 | break; | |
657 | } | |
902acc78 | 658 | } |
4fd6931e JB |
659 | } |
660 | ||
661 | static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev, | |
662 | u8 *mac, struct station_parameters *params) | |
663 | { | |
14db74bc | 664 | struct ieee80211_local *local = wiphy_priv(wiphy); |
4fd6931e JB |
665 | struct sta_info *sta; |
666 | struct ieee80211_sub_if_data *sdata; | |
73651ee6 | 667 | int err; |
4fd6931e JB |
668 | |
669 | /* Prevent a race with changing the rate control algorithm */ | |
670 | if (!netif_running(dev)) | |
671 | return -ENETDOWN; | |
672 | ||
4fd6931e JB |
673 | if (params->vlan) { |
674 | sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan); | |
675 | ||
05c914fe JB |
676 | if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && |
677 | sdata->vif.type != NL80211_IFTYPE_AP) | |
4fd6931e JB |
678 | return -EINVAL; |
679 | } else | |
680 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
681 | ||
03e4497e JB |
682 | if (compare_ether_addr(mac, dev->dev_addr) == 0) |
683 | return -EINVAL; | |
684 | ||
685 | if (is_multicast_ether_addr(mac)) | |
686 | return -EINVAL; | |
687 | ||
688 | sta = sta_info_alloc(sdata, mac, GFP_KERNEL); | |
73651ee6 JB |
689 | if (!sta) |
690 | return -ENOMEM; | |
4fd6931e JB |
691 | |
692 | sta->flags = WLAN_STA_AUTH | WLAN_STA_ASSOC; | |
693 | ||
694 | sta_apply_parameters(local, sta, params); | |
695 | ||
4b7679a5 | 696 | rate_control_rate_init(sta); |
4fd6931e | 697 | |
73651ee6 JB |
698 | rcu_read_lock(); |
699 | ||
700 | err = sta_info_insert(sta); | |
701 | if (err) { | |
93e5deb1 | 702 | /* STA has been freed */ |
73651ee6 JB |
703 | rcu_read_unlock(); |
704 | return err; | |
705 | } | |
706 | ||
05c914fe JB |
707 | if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN || |
708 | sdata->vif.type == NL80211_IFTYPE_AP) | |
73651ee6 JB |
709 | ieee80211_send_layer2_update(sta); |
710 | ||
711 | rcu_read_unlock(); | |
712 | ||
4fd6931e JB |
713 | return 0; |
714 | } | |
715 | ||
716 | static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev, | |
717 | u8 *mac) | |
718 | { | |
14db74bc JB |
719 | struct ieee80211_local *local = wiphy_priv(wiphy); |
720 | struct ieee80211_sub_if_data *sdata; | |
4fd6931e JB |
721 | struct sta_info *sta; |
722 | ||
14db74bc JB |
723 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
724 | ||
4fd6931e | 725 | if (mac) { |
98dd6a57 JB |
726 | rcu_read_lock(); |
727 | ||
4fd6931e JB |
728 | /* XXX: get sta belonging to dev */ |
729 | sta = sta_info_get(local, mac); | |
98dd6a57 JB |
730 | if (!sta) { |
731 | rcu_read_unlock(); | |
4fd6931e | 732 | return -ENOENT; |
98dd6a57 | 733 | } |
4fd6931e | 734 | |
d0709a65 | 735 | sta_info_unlink(&sta); |
98dd6a57 JB |
736 | rcu_read_unlock(); |
737 | ||
4f6fab47 | 738 | sta_info_destroy(sta); |
4fd6931e | 739 | } else |
d0709a65 | 740 | sta_info_flush(local, sdata); |
4fd6931e JB |
741 | |
742 | return 0; | |
743 | } | |
744 | ||
745 | static int ieee80211_change_station(struct wiphy *wiphy, | |
746 | struct net_device *dev, | |
747 | u8 *mac, | |
748 | struct station_parameters *params) | |
749 | { | |
14db74bc | 750 | struct ieee80211_local *local = wiphy_priv(wiphy); |
4fd6931e JB |
751 | struct sta_info *sta; |
752 | struct ieee80211_sub_if_data *vlansdata; | |
753 | ||
98dd6a57 JB |
754 | rcu_read_lock(); |
755 | ||
4fd6931e JB |
756 | /* XXX: get sta belonging to dev */ |
757 | sta = sta_info_get(local, mac); | |
98dd6a57 JB |
758 | if (!sta) { |
759 | rcu_read_unlock(); | |
4fd6931e | 760 | return -ENOENT; |
98dd6a57 | 761 | } |
4fd6931e | 762 | |
d0709a65 | 763 | if (params->vlan && params->vlan != sta->sdata->dev) { |
4fd6931e JB |
764 | vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan); |
765 | ||
05c914fe JB |
766 | if (vlansdata->vif.type != NL80211_IFTYPE_AP_VLAN && |
767 | vlansdata->vif.type != NL80211_IFTYPE_AP) { | |
98dd6a57 | 768 | rcu_read_unlock(); |
4fd6931e | 769 | return -EINVAL; |
98dd6a57 | 770 | } |
4fd6931e | 771 | |
14db74bc | 772 | sta->sdata = vlansdata; |
4fd6931e JB |
773 | ieee80211_send_layer2_update(sta); |
774 | } | |
775 | ||
776 | sta_apply_parameters(local, sta, params); | |
777 | ||
98dd6a57 JB |
778 | rcu_read_unlock(); |
779 | ||
4fd6931e JB |
780 | return 0; |
781 | } | |
782 | ||
c5dd9c2b LCC |
783 | #ifdef CONFIG_MAC80211_MESH |
784 | static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev, | |
785 | u8 *dst, u8 *next_hop) | |
786 | { | |
14db74bc JB |
787 | struct ieee80211_local *local = wiphy_priv(wiphy); |
788 | struct ieee80211_sub_if_data *sdata; | |
c5dd9c2b LCC |
789 | struct mesh_path *mpath; |
790 | struct sta_info *sta; | |
791 | int err; | |
792 | ||
793 | if (!netif_running(dev)) | |
794 | return -ENETDOWN; | |
795 | ||
14db74bc JB |
796 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
797 | ||
05c914fe | 798 | if (sdata->vif.type != NL80211_IFTYPE_MESH_POINT) |
c5dd9c2b LCC |
799 | return -ENOTSUPP; |
800 | ||
d0709a65 | 801 | rcu_read_lock(); |
c5dd9c2b | 802 | sta = sta_info_get(local, next_hop); |
d0709a65 JB |
803 | if (!sta) { |
804 | rcu_read_unlock(); | |
c5dd9c2b | 805 | return -ENOENT; |
d0709a65 | 806 | } |
c5dd9c2b | 807 | |
f698d856 | 808 | err = mesh_path_add(dst, sdata); |
d0709a65 JB |
809 | if (err) { |
810 | rcu_read_unlock(); | |
c5dd9c2b | 811 | return err; |
d0709a65 | 812 | } |
c5dd9c2b | 813 | |
f698d856 | 814 | mpath = mesh_path_lookup(dst, sdata); |
c5dd9c2b LCC |
815 | if (!mpath) { |
816 | rcu_read_unlock(); | |
c5dd9c2b LCC |
817 | return -ENXIO; |
818 | } | |
819 | mesh_path_fix_nexthop(mpath, sta); | |
d0709a65 | 820 | |
c5dd9c2b LCC |
821 | rcu_read_unlock(); |
822 | return 0; | |
823 | } | |
824 | ||
825 | static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev, | |
826 | u8 *dst) | |
827 | { | |
f698d856 JBG |
828 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
829 | ||
c5dd9c2b | 830 | if (dst) |
f698d856 | 831 | return mesh_path_del(dst, sdata); |
c5dd9c2b | 832 | |
f698d856 | 833 | mesh_path_flush(sdata); |
c5dd9c2b LCC |
834 | return 0; |
835 | } | |
836 | ||
837 | static int ieee80211_change_mpath(struct wiphy *wiphy, | |
838 | struct net_device *dev, | |
839 | u8 *dst, u8 *next_hop) | |
840 | { | |
14db74bc JB |
841 | struct ieee80211_local *local = wiphy_priv(wiphy); |
842 | struct ieee80211_sub_if_data *sdata; | |
c5dd9c2b LCC |
843 | struct mesh_path *mpath; |
844 | struct sta_info *sta; | |
845 | ||
846 | if (!netif_running(dev)) | |
847 | return -ENETDOWN; | |
848 | ||
14db74bc JB |
849 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
850 | ||
05c914fe | 851 | if (sdata->vif.type != NL80211_IFTYPE_MESH_POINT) |
c5dd9c2b LCC |
852 | return -ENOTSUPP; |
853 | ||
d0709a65 JB |
854 | rcu_read_lock(); |
855 | ||
c5dd9c2b | 856 | sta = sta_info_get(local, next_hop); |
d0709a65 JB |
857 | if (!sta) { |
858 | rcu_read_unlock(); | |
c5dd9c2b | 859 | return -ENOENT; |
d0709a65 | 860 | } |
c5dd9c2b | 861 | |
f698d856 | 862 | mpath = mesh_path_lookup(dst, sdata); |
c5dd9c2b LCC |
863 | if (!mpath) { |
864 | rcu_read_unlock(); | |
c5dd9c2b LCC |
865 | return -ENOENT; |
866 | } | |
867 | ||
868 | mesh_path_fix_nexthop(mpath, sta); | |
d0709a65 | 869 | |
c5dd9c2b LCC |
870 | rcu_read_unlock(); |
871 | return 0; | |
872 | } | |
873 | ||
874 | static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop, | |
875 | struct mpath_info *pinfo) | |
876 | { | |
877 | if (mpath->next_hop) | |
17741cdc | 878 | memcpy(next_hop, mpath->next_hop->sta.addr, ETH_ALEN); |
c5dd9c2b LCC |
879 | else |
880 | memset(next_hop, 0, ETH_ALEN); | |
881 | ||
882 | pinfo->filled = MPATH_INFO_FRAME_QLEN | | |
883 | MPATH_INFO_DSN | | |
884 | MPATH_INFO_METRIC | | |
885 | MPATH_INFO_EXPTIME | | |
886 | MPATH_INFO_DISCOVERY_TIMEOUT | | |
887 | MPATH_INFO_DISCOVERY_RETRIES | | |
888 | MPATH_INFO_FLAGS; | |
889 | ||
890 | pinfo->frame_qlen = mpath->frame_queue.qlen; | |
891 | pinfo->dsn = mpath->dsn; | |
892 | pinfo->metric = mpath->metric; | |
893 | if (time_before(jiffies, mpath->exp_time)) | |
894 | pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies); | |
895 | pinfo->discovery_timeout = | |
896 | jiffies_to_msecs(mpath->discovery_timeout); | |
897 | pinfo->discovery_retries = mpath->discovery_retries; | |
898 | pinfo->flags = 0; | |
899 | if (mpath->flags & MESH_PATH_ACTIVE) | |
900 | pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE; | |
901 | if (mpath->flags & MESH_PATH_RESOLVING) | |
902 | pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING; | |
903 | if (mpath->flags & MESH_PATH_DSN_VALID) | |
904 | pinfo->flags |= NL80211_MPATH_FLAG_DSN_VALID; | |
905 | if (mpath->flags & MESH_PATH_FIXED) | |
906 | pinfo->flags |= NL80211_MPATH_FLAG_FIXED; | |
907 | if (mpath->flags & MESH_PATH_RESOLVING) | |
908 | pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING; | |
909 | ||
910 | pinfo->flags = mpath->flags; | |
911 | } | |
912 | ||
913 | static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev, | |
914 | u8 *dst, u8 *next_hop, struct mpath_info *pinfo) | |
915 | ||
916 | { | |
14db74bc | 917 | struct ieee80211_sub_if_data *sdata; |
c5dd9c2b LCC |
918 | struct mesh_path *mpath; |
919 | ||
14db74bc JB |
920 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
921 | ||
05c914fe | 922 | if (sdata->vif.type != NL80211_IFTYPE_MESH_POINT) |
c5dd9c2b LCC |
923 | return -ENOTSUPP; |
924 | ||
925 | rcu_read_lock(); | |
f698d856 | 926 | mpath = mesh_path_lookup(dst, sdata); |
c5dd9c2b LCC |
927 | if (!mpath) { |
928 | rcu_read_unlock(); | |
929 | return -ENOENT; | |
930 | } | |
931 | memcpy(dst, mpath->dst, ETH_ALEN); | |
932 | mpath_set_pinfo(mpath, next_hop, pinfo); | |
933 | rcu_read_unlock(); | |
934 | return 0; | |
935 | } | |
936 | ||
937 | static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev, | |
938 | int idx, u8 *dst, u8 *next_hop, | |
939 | struct mpath_info *pinfo) | |
940 | { | |
14db74bc | 941 | struct ieee80211_sub_if_data *sdata; |
c5dd9c2b LCC |
942 | struct mesh_path *mpath; |
943 | ||
14db74bc JB |
944 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
945 | ||
05c914fe | 946 | if (sdata->vif.type != NL80211_IFTYPE_MESH_POINT) |
c5dd9c2b LCC |
947 | return -ENOTSUPP; |
948 | ||
949 | rcu_read_lock(); | |
f698d856 | 950 | mpath = mesh_path_lookup_by_idx(idx, sdata); |
c5dd9c2b LCC |
951 | if (!mpath) { |
952 | rcu_read_unlock(); | |
953 | return -ENOENT; | |
954 | } | |
955 | memcpy(dst, mpath->dst, ETH_ALEN); | |
956 | mpath_set_pinfo(mpath, next_hop, pinfo); | |
957 | rcu_read_unlock(); | |
958 | return 0; | |
959 | } | |
960 | #endif | |
961 | ||
9f1ba906 JM |
962 | static int ieee80211_change_bss(struct wiphy *wiphy, |
963 | struct net_device *dev, | |
964 | struct bss_parameters *params) | |
965 | { | |
9f1ba906 JM |
966 | struct ieee80211_sub_if_data *sdata; |
967 | u32 changed = 0; | |
968 | ||
9f1ba906 JM |
969 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
970 | ||
05c914fe | 971 | if (sdata->vif.type != NL80211_IFTYPE_AP) |
9f1ba906 JM |
972 | return -EINVAL; |
973 | ||
974 | if (params->use_cts_prot >= 0) { | |
975 | sdata->bss_conf.use_cts_prot = params->use_cts_prot; | |
976 | changed |= BSS_CHANGED_ERP_CTS_PROT; | |
977 | } | |
978 | if (params->use_short_preamble >= 0) { | |
979 | sdata->bss_conf.use_short_preamble = | |
980 | params->use_short_preamble; | |
981 | changed |= BSS_CHANGED_ERP_PREAMBLE; | |
982 | } | |
983 | if (params->use_short_slot_time >= 0) { | |
984 | sdata->bss_conf.use_short_slot = | |
985 | params->use_short_slot_time; | |
986 | changed |= BSS_CHANGED_ERP_SLOT; | |
987 | } | |
988 | ||
989 | ieee80211_bss_info_change_notify(sdata, changed); | |
990 | ||
991 | return 0; | |
992 | } | |
993 | ||
f0706e82 JB |
994 | struct cfg80211_ops mac80211_config_ops = { |
995 | .add_virtual_intf = ieee80211_add_iface, | |
996 | .del_virtual_intf = ieee80211_del_iface, | |
42613db7 | 997 | .change_virtual_intf = ieee80211_change_iface, |
e8cbb4cb JB |
998 | .add_key = ieee80211_add_key, |
999 | .del_key = ieee80211_del_key, | |
62da92fb | 1000 | .get_key = ieee80211_get_key, |
e8cbb4cb | 1001 | .set_default_key = ieee80211_config_default_key, |
5dfdaf58 JB |
1002 | .add_beacon = ieee80211_add_beacon, |
1003 | .set_beacon = ieee80211_set_beacon, | |
1004 | .del_beacon = ieee80211_del_beacon, | |
4fd6931e JB |
1005 | .add_station = ieee80211_add_station, |
1006 | .del_station = ieee80211_del_station, | |
1007 | .change_station = ieee80211_change_station, | |
7bbdd2d9 | 1008 | .get_station = ieee80211_get_station, |
c5dd9c2b LCC |
1009 | .dump_station = ieee80211_dump_station, |
1010 | #ifdef CONFIG_MAC80211_MESH | |
1011 | .add_mpath = ieee80211_add_mpath, | |
1012 | .del_mpath = ieee80211_del_mpath, | |
1013 | .change_mpath = ieee80211_change_mpath, | |
1014 | .get_mpath = ieee80211_get_mpath, | |
1015 | .dump_mpath = ieee80211_dump_mpath, | |
1016 | #endif | |
9f1ba906 | 1017 | .change_bss = ieee80211_change_bss, |
f0706e82 | 1018 | }; |