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 | |
42613db7 JB |
20 | static enum ieee80211_if_types |
21 | nl80211_type_to_mac80211_type(enum nl80211_iftype type) | |
22 | { | |
23 | switch (type) { | |
24 | case NL80211_IFTYPE_UNSPECIFIED: | |
25 | return IEEE80211_IF_TYPE_STA; | |
26 | case NL80211_IFTYPE_ADHOC: | |
27 | return IEEE80211_IF_TYPE_IBSS; | |
28 | case NL80211_IFTYPE_STATION: | |
29 | return IEEE80211_IF_TYPE_STA; | |
30 | case NL80211_IFTYPE_MONITOR: | |
31 | return IEEE80211_IF_TYPE_MNTR; | |
c5dd9c2b LCC |
32 | #ifdef CONFIG_MAC80211_MESH |
33 | case NL80211_IFTYPE_MESH_POINT: | |
34 | return IEEE80211_IF_TYPE_MESH_POINT; | |
35 | #endif | |
b454048c JB |
36 | case NL80211_IFTYPE_WDS: |
37 | return IEEE80211_IF_TYPE_WDS; | |
42613db7 JB |
38 | default: |
39 | return IEEE80211_IF_TYPE_INVALID; | |
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); | |
42613db7 | 48 | enum ieee80211_if_types itype; |
8cc9a739 MW |
49 | struct net_device *dev; |
50 | struct ieee80211_sub_if_data *sdata; | |
51 | int err; | |
f0706e82 | 52 | |
42613db7 JB |
53 | itype = nl80211_type_to_mac80211_type(type); |
54 | if (itype == IEEE80211_IF_TYPE_INVALID) | |
f0706e82 | 55 | return -EINVAL; |
f0706e82 | 56 | |
3e122be0 | 57 | err = ieee80211_if_add(local, name, &dev, itype, params); |
8cc9a739 MW |
58 | if (err || itype != IEEE80211_IF_TYPE_MNTR || !flags) |
59 | return err; | |
60 | ||
61 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
62 | sdata->u.mntr_flags = *flags; | |
63 | return 0; | |
f0706e82 JB |
64 | } |
65 | ||
66 | static int ieee80211_del_iface(struct wiphy *wiphy, int ifindex) | |
67 | { | |
f0706e82 | 68 | struct net_device *dev; |
f0706e82 | 69 | |
42613db7 JB |
70 | /* we're under RTNL */ |
71 | dev = __dev_get_by_index(&init_net, ifindex); | |
f0706e82 | 72 | if (!dev) |
75636525 | 73 | return -ENODEV; |
f0706e82 | 74 | |
75636525 | 75 | ieee80211_if_remove(dev); |
f0706e82 | 76 | |
75636525 | 77 | return 0; |
f0706e82 JB |
78 | } |
79 | ||
42613db7 | 80 | static int ieee80211_change_iface(struct wiphy *wiphy, int ifindex, |
2ec600d6 LCC |
81 | enum nl80211_iftype type, u32 *flags, |
82 | struct vif_params *params) | |
42613db7 | 83 | { |
42613db7 JB |
84 | struct net_device *dev; |
85 | enum ieee80211_if_types itype; | |
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 | ||
42613db7 JB |
94 | itype = nl80211_type_to_mac80211_type(type); |
95 | if (itype == IEEE80211_IF_TYPE_INVALID) | |
96 | return -EINVAL; | |
97 | ||
98 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
99 | ||
f3947e2d JB |
100 | ret = ieee80211_if_change_type(sdata, itype); |
101 | if (ret) | |
102 | return ret; | |
42613db7 | 103 | |
902acc78 JB |
104 | if (ieee80211_vif_is_mesh(&sdata->vif) && params->mesh_id_len) |
105 | ieee80211_if_sta_set_mesh_id(&sdata->u.sta, | |
106 | params->mesh_id_len, | |
107 | params->mesh_id); | |
c5dd9c2b | 108 | |
8cc9a739 MW |
109 | if (sdata->vif.type != IEEE80211_IF_TYPE_MNTR || !flags) |
110 | return 0; | |
111 | ||
112 | sdata->u.mntr_flags = *flags; | |
42613db7 JB |
113 | return 0; |
114 | } | |
115 | ||
e8cbb4cb JB |
116 | static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev, |
117 | u8 key_idx, u8 *mac_addr, | |
118 | struct key_params *params) | |
119 | { | |
120 | struct ieee80211_sub_if_data *sdata; | |
121 | struct sta_info *sta = NULL; | |
122 | enum ieee80211_key_alg alg; | |
db4d1169 | 123 | struct ieee80211_key *key; |
3b96766f | 124 | int err; |
e8cbb4cb JB |
125 | |
126 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
127 | ||
128 | switch (params->cipher) { | |
129 | case WLAN_CIPHER_SUITE_WEP40: | |
130 | case WLAN_CIPHER_SUITE_WEP104: | |
131 | alg = ALG_WEP; | |
132 | break; | |
133 | case WLAN_CIPHER_SUITE_TKIP: | |
134 | alg = ALG_TKIP; | |
135 | break; | |
136 | case WLAN_CIPHER_SUITE_CCMP: | |
137 | alg = ALG_CCMP; | |
138 | break; | |
139 | default: | |
140 | return -EINVAL; | |
141 | } | |
142 | ||
db4d1169 JB |
143 | key = ieee80211_key_alloc(alg, key_idx, params->key_len, params->key); |
144 | if (!key) | |
145 | return -ENOMEM; | |
146 | ||
3b96766f JB |
147 | rcu_read_lock(); |
148 | ||
e8cbb4cb JB |
149 | if (mac_addr) { |
150 | sta = sta_info_get(sdata->local, mac_addr); | |
db4d1169 JB |
151 | if (!sta) { |
152 | ieee80211_key_free(key); | |
3b96766f JB |
153 | err = -ENOENT; |
154 | goto out_unlock; | |
db4d1169 | 155 | } |
e8cbb4cb JB |
156 | } |
157 | ||
db4d1169 JB |
158 | ieee80211_key_link(key, sdata, sta); |
159 | ||
3b96766f JB |
160 | err = 0; |
161 | out_unlock: | |
162 | rcu_read_unlock(); | |
163 | ||
164 | return err; | |
e8cbb4cb JB |
165 | } |
166 | ||
167 | static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev, | |
168 | u8 key_idx, u8 *mac_addr) | |
169 | { | |
170 | struct ieee80211_sub_if_data *sdata; | |
171 | struct sta_info *sta; | |
172 | int ret; | |
173 | ||
174 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
175 | ||
3b96766f JB |
176 | rcu_read_lock(); |
177 | ||
e8cbb4cb | 178 | if (mac_addr) { |
3b96766f JB |
179 | ret = -ENOENT; |
180 | ||
e8cbb4cb JB |
181 | sta = sta_info_get(sdata->local, mac_addr); |
182 | if (!sta) | |
3b96766f | 183 | goto out_unlock; |
e8cbb4cb | 184 | |
db4d1169 | 185 | if (sta->key) { |
d0709a65 | 186 | ieee80211_key_free(sta->key); |
db4d1169 | 187 | WARN_ON(sta->key); |
3b96766f JB |
188 | ret = 0; |
189 | } | |
e8cbb4cb | 190 | |
3b96766f | 191 | goto out_unlock; |
e8cbb4cb JB |
192 | } |
193 | ||
3b96766f JB |
194 | if (!sdata->keys[key_idx]) { |
195 | ret = -ENOENT; | |
196 | goto out_unlock; | |
197 | } | |
e8cbb4cb | 198 | |
d0709a65 | 199 | ieee80211_key_free(sdata->keys[key_idx]); |
db4d1169 | 200 | WARN_ON(sdata->keys[key_idx]); |
e8cbb4cb | 201 | |
3b96766f JB |
202 | ret = 0; |
203 | out_unlock: | |
204 | rcu_read_unlock(); | |
205 | ||
206 | return ret; | |
e8cbb4cb JB |
207 | } |
208 | ||
62da92fb JB |
209 | static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev, |
210 | u8 key_idx, u8 *mac_addr, void *cookie, | |
211 | void (*callback)(void *cookie, | |
212 | struct key_params *params)) | |
213 | { | |
214 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
215 | struct sta_info *sta = NULL; | |
216 | u8 seq[6] = {0}; | |
217 | struct key_params params; | |
218 | struct ieee80211_key *key; | |
219 | u32 iv32; | |
220 | u16 iv16; | |
221 | int err = -ENOENT; | |
222 | ||
3b96766f JB |
223 | rcu_read_lock(); |
224 | ||
62da92fb JB |
225 | if (mac_addr) { |
226 | sta = sta_info_get(sdata->local, mac_addr); | |
227 | if (!sta) | |
228 | goto out; | |
229 | ||
230 | key = sta->key; | |
231 | } else | |
232 | key = sdata->keys[key_idx]; | |
233 | ||
234 | if (!key) | |
235 | goto out; | |
236 | ||
237 | memset(¶ms, 0, sizeof(params)); | |
238 | ||
239 | switch (key->conf.alg) { | |
240 | case ALG_TKIP: | |
241 | params.cipher = WLAN_CIPHER_SUITE_TKIP; | |
242 | ||
b0f76b33 HH |
243 | iv32 = key->u.tkip.tx.iv32; |
244 | iv16 = key->u.tkip.tx.iv16; | |
62da92fb JB |
245 | |
246 | if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE && | |
247 | sdata->local->ops->get_tkip_seq) | |
248 | sdata->local->ops->get_tkip_seq( | |
249 | local_to_hw(sdata->local), | |
250 | key->conf.hw_key_idx, | |
251 | &iv32, &iv16); | |
252 | ||
253 | seq[0] = iv16 & 0xff; | |
254 | seq[1] = (iv16 >> 8) & 0xff; | |
255 | seq[2] = iv32 & 0xff; | |
256 | seq[3] = (iv32 >> 8) & 0xff; | |
257 | seq[4] = (iv32 >> 16) & 0xff; | |
258 | seq[5] = (iv32 >> 24) & 0xff; | |
259 | params.seq = seq; | |
260 | params.seq_len = 6; | |
261 | break; | |
262 | case ALG_CCMP: | |
263 | params.cipher = WLAN_CIPHER_SUITE_CCMP; | |
264 | seq[0] = key->u.ccmp.tx_pn[5]; | |
265 | seq[1] = key->u.ccmp.tx_pn[4]; | |
266 | seq[2] = key->u.ccmp.tx_pn[3]; | |
267 | seq[3] = key->u.ccmp.tx_pn[2]; | |
268 | seq[4] = key->u.ccmp.tx_pn[1]; | |
269 | seq[5] = key->u.ccmp.tx_pn[0]; | |
270 | params.seq = seq; | |
271 | params.seq_len = 6; | |
272 | break; | |
273 | case ALG_WEP: | |
274 | if (key->conf.keylen == 5) | |
275 | params.cipher = WLAN_CIPHER_SUITE_WEP40; | |
276 | else | |
277 | params.cipher = WLAN_CIPHER_SUITE_WEP104; | |
278 | break; | |
279 | } | |
280 | ||
281 | params.key = key->conf.key; | |
282 | params.key_len = key->conf.keylen; | |
283 | ||
284 | callback(cookie, ¶ms); | |
285 | err = 0; | |
286 | ||
287 | out: | |
3b96766f | 288 | rcu_read_unlock(); |
62da92fb JB |
289 | return err; |
290 | } | |
291 | ||
e8cbb4cb JB |
292 | static int ieee80211_config_default_key(struct wiphy *wiphy, |
293 | struct net_device *dev, | |
294 | u8 key_idx) | |
295 | { | |
296 | struct ieee80211_sub_if_data *sdata; | |
297 | ||
3b96766f JB |
298 | rcu_read_lock(); |
299 | ||
e8cbb4cb JB |
300 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
301 | ieee80211_set_default_key(sdata, key_idx); | |
302 | ||
3b96766f JB |
303 | rcu_read_unlock(); |
304 | ||
e8cbb4cb JB |
305 | return 0; |
306 | } | |
307 | ||
c5dd9c2b LCC |
308 | static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo) |
309 | { | |
d0709a65 | 310 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
c5dd9c2b LCC |
311 | |
312 | sinfo->filled = STATION_INFO_INACTIVE_TIME | | |
313 | STATION_INFO_RX_BYTES | | |
314 | STATION_INFO_TX_BYTES; | |
315 | ||
316 | sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx); | |
317 | sinfo->rx_bytes = sta->rx_bytes; | |
318 | sinfo->tx_bytes = sta->tx_bytes; | |
319 | ||
902acc78 | 320 | if (ieee80211_vif_is_mesh(&sdata->vif)) { |
c5dd9c2b | 321 | #ifdef CONFIG_MAC80211_MESH |
c5dd9c2b LCC |
322 | sinfo->filled |= STATION_INFO_LLID | |
323 | STATION_INFO_PLID | | |
324 | STATION_INFO_PLINK_STATE; | |
325 | ||
326 | sinfo->llid = le16_to_cpu(sta->llid); | |
327 | sinfo->plid = le16_to_cpu(sta->plid); | |
328 | sinfo->plink_state = sta->plink_state; | |
c5dd9c2b | 329 | #endif |
902acc78 | 330 | } |
c5dd9c2b LCC |
331 | } |
332 | ||
333 | ||
334 | static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev, | |
335 | int idx, u8 *mac, struct station_info *sinfo) | |
336 | { | |
337 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
338 | struct sta_info *sta; | |
d0709a65 JB |
339 | int ret = -ENOENT; |
340 | ||
341 | rcu_read_lock(); | |
c5dd9c2b LCC |
342 | |
343 | sta = sta_info_get_by_idx(local, idx, dev); | |
d0709a65 JB |
344 | if (sta) { |
345 | ret = 0; | |
346 | memcpy(mac, sta->addr, ETH_ALEN); | |
347 | sta_set_sinfo(sta, sinfo); | |
348 | } | |
c5dd9c2b | 349 | |
d0709a65 | 350 | rcu_read_unlock(); |
c5dd9c2b | 351 | |
d0709a65 | 352 | return ret; |
c5dd9c2b LCC |
353 | } |
354 | ||
7bbdd2d9 | 355 | static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev, |
2ec600d6 | 356 | u8 *mac, struct station_info *sinfo) |
7bbdd2d9 JB |
357 | { |
358 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
359 | struct sta_info *sta; | |
d0709a65 | 360 | int ret = -ENOENT; |
7bbdd2d9 | 361 | |
d0709a65 | 362 | rcu_read_lock(); |
7bbdd2d9 JB |
363 | |
364 | /* XXX: verify sta->dev == dev */ | |
7bbdd2d9 | 365 | |
d0709a65 JB |
366 | sta = sta_info_get(local, mac); |
367 | if (sta) { | |
368 | ret = 0; | |
369 | sta_set_sinfo(sta, sinfo); | |
370 | } | |
371 | ||
372 | rcu_read_unlock(); | |
373 | ||
374 | return ret; | |
7bbdd2d9 JB |
375 | } |
376 | ||
5dfdaf58 JB |
377 | /* |
378 | * This handles both adding a beacon and setting new beacon info | |
379 | */ | |
380 | static int ieee80211_config_beacon(struct ieee80211_sub_if_data *sdata, | |
381 | struct beacon_parameters *params) | |
382 | { | |
383 | struct beacon_data *new, *old; | |
384 | int new_head_len, new_tail_len; | |
385 | int size; | |
386 | int err = -EINVAL; | |
387 | ||
388 | old = sdata->u.ap.beacon; | |
389 | ||
390 | /* head must not be zero-length */ | |
391 | if (params->head && !params->head_len) | |
392 | return -EINVAL; | |
393 | ||
394 | /* | |
395 | * This is a kludge. beacon interval should really be part | |
396 | * of the beacon information. | |
397 | */ | |
398 | if (params->interval) { | |
399 | sdata->local->hw.conf.beacon_int = params->interval; | |
400 | if (ieee80211_hw_config(sdata->local)) | |
401 | return -EINVAL; | |
402 | /* | |
403 | * We updated some parameter so if below bails out | |
404 | * it's not an error. | |
405 | */ | |
406 | err = 0; | |
407 | } | |
408 | ||
409 | /* Need to have a beacon head if we don't have one yet */ | |
410 | if (!params->head && !old) | |
411 | return err; | |
412 | ||
413 | /* sorry, no way to start beaconing without dtim period */ | |
414 | if (!params->dtim_period && !old) | |
415 | return err; | |
416 | ||
417 | /* new or old head? */ | |
418 | if (params->head) | |
419 | new_head_len = params->head_len; | |
420 | else | |
421 | new_head_len = old->head_len; | |
422 | ||
423 | /* new or old tail? */ | |
424 | if (params->tail || !old) | |
425 | /* params->tail_len will be zero for !params->tail */ | |
426 | new_tail_len = params->tail_len; | |
427 | else | |
428 | new_tail_len = old->tail_len; | |
429 | ||
430 | size = sizeof(*new) + new_head_len + new_tail_len; | |
431 | ||
432 | new = kzalloc(size, GFP_KERNEL); | |
433 | if (!new) | |
434 | return -ENOMEM; | |
435 | ||
436 | /* start filling the new info now */ | |
437 | ||
438 | /* new or old dtim period? */ | |
439 | if (params->dtim_period) | |
440 | new->dtim_period = params->dtim_period; | |
441 | else | |
442 | new->dtim_period = old->dtim_period; | |
443 | ||
444 | /* | |
445 | * pointers go into the block we allocated, | |
446 | * memory is | beacon_data | head | tail | | |
447 | */ | |
448 | new->head = ((u8 *) new) + sizeof(*new); | |
449 | new->tail = new->head + new_head_len; | |
450 | new->head_len = new_head_len; | |
451 | new->tail_len = new_tail_len; | |
452 | ||
453 | /* copy in head */ | |
454 | if (params->head) | |
455 | memcpy(new->head, params->head, new_head_len); | |
456 | else | |
457 | memcpy(new->head, old->head, new_head_len); | |
458 | ||
459 | /* copy in optional tail */ | |
460 | if (params->tail) | |
461 | memcpy(new->tail, params->tail, new_tail_len); | |
462 | else | |
463 | if (old) | |
464 | memcpy(new->tail, old->tail, new_tail_len); | |
465 | ||
466 | rcu_assign_pointer(sdata->u.ap.beacon, new); | |
467 | ||
468 | synchronize_rcu(); | |
469 | ||
470 | kfree(old); | |
471 | ||
9d139c81 | 472 | return ieee80211_if_config(sdata, IEEE80211_IFCC_BEACON); |
5dfdaf58 JB |
473 | } |
474 | ||
475 | static int ieee80211_add_beacon(struct wiphy *wiphy, struct net_device *dev, | |
476 | struct beacon_parameters *params) | |
477 | { | |
478 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
479 | struct beacon_data *old; | |
480 | ||
481 | if (sdata->vif.type != IEEE80211_IF_TYPE_AP) | |
482 | return -EINVAL; | |
483 | ||
484 | old = sdata->u.ap.beacon; | |
485 | ||
486 | if (old) | |
487 | return -EALREADY; | |
488 | ||
489 | return ieee80211_config_beacon(sdata, params); | |
490 | } | |
491 | ||
492 | static int ieee80211_set_beacon(struct wiphy *wiphy, struct net_device *dev, | |
493 | struct beacon_parameters *params) | |
494 | { | |
495 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
496 | struct beacon_data *old; | |
497 | ||
498 | if (sdata->vif.type != IEEE80211_IF_TYPE_AP) | |
499 | return -EINVAL; | |
500 | ||
501 | old = sdata->u.ap.beacon; | |
502 | ||
503 | if (!old) | |
504 | return -ENOENT; | |
505 | ||
506 | return ieee80211_config_beacon(sdata, params); | |
507 | } | |
508 | ||
509 | static int ieee80211_del_beacon(struct wiphy *wiphy, struct net_device *dev) | |
510 | { | |
511 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
512 | struct beacon_data *old; | |
513 | ||
514 | if (sdata->vif.type != IEEE80211_IF_TYPE_AP) | |
515 | return -EINVAL; | |
516 | ||
517 | old = sdata->u.ap.beacon; | |
518 | ||
519 | if (!old) | |
520 | return -ENOENT; | |
521 | ||
522 | rcu_assign_pointer(sdata->u.ap.beacon, NULL); | |
523 | synchronize_rcu(); | |
524 | kfree(old); | |
525 | ||
9d139c81 | 526 | return ieee80211_if_config(sdata, IEEE80211_IFCC_BEACON); |
5dfdaf58 JB |
527 | } |
528 | ||
4fd6931e JB |
529 | /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */ |
530 | struct iapp_layer2_update { | |
531 | u8 da[ETH_ALEN]; /* broadcast */ | |
532 | u8 sa[ETH_ALEN]; /* STA addr */ | |
533 | __be16 len; /* 6 */ | |
534 | u8 dsap; /* 0 */ | |
535 | u8 ssap; /* 0 */ | |
536 | u8 control; | |
537 | u8 xid_info[3]; | |
538 | } __attribute__ ((packed)); | |
539 | ||
540 | static void ieee80211_send_layer2_update(struct sta_info *sta) | |
541 | { | |
542 | struct iapp_layer2_update *msg; | |
543 | struct sk_buff *skb; | |
544 | ||
545 | /* Send Level 2 Update Frame to update forwarding tables in layer 2 | |
546 | * bridge devices */ | |
547 | ||
548 | skb = dev_alloc_skb(sizeof(*msg)); | |
549 | if (!skb) | |
550 | return; | |
551 | msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg)); | |
552 | ||
553 | /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID) | |
554 | * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */ | |
555 | ||
556 | memset(msg->da, 0xff, ETH_ALEN); | |
557 | memcpy(msg->sa, sta->addr, ETH_ALEN); | |
558 | msg->len = htons(6); | |
559 | msg->dsap = 0; | |
560 | msg->ssap = 0x01; /* NULL LSAP, CR Bit: Response */ | |
561 | msg->control = 0xaf; /* XID response lsb.1111F101. | |
562 | * F=0 (no poll command; unsolicited frame) */ | |
563 | msg->xid_info[0] = 0x81; /* XID format identifier */ | |
564 | msg->xid_info[1] = 1; /* LLC types/classes: Type 1 LLC */ | |
565 | msg->xid_info[2] = 0; /* XID sender's receive window size (RW) */ | |
566 | ||
d0709a65 JB |
567 | skb->dev = sta->sdata->dev; |
568 | skb->protocol = eth_type_trans(skb, sta->sdata->dev); | |
4fd6931e JB |
569 | memset(skb->cb, 0, sizeof(skb->cb)); |
570 | netif_rx(skb); | |
571 | } | |
572 | ||
573 | static void sta_apply_parameters(struct ieee80211_local *local, | |
574 | struct sta_info *sta, | |
575 | struct station_parameters *params) | |
576 | { | |
577 | u32 rates; | |
578 | int i, j; | |
8318d78a | 579 | struct ieee80211_supported_band *sband; |
d0709a65 | 580 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
4fd6931e | 581 | |
73651ee6 JB |
582 | /* |
583 | * FIXME: updating the flags is racy when this function is | |
584 | * called from ieee80211_change_station(), this will | |
585 | * be resolved in a future patch. | |
586 | */ | |
587 | ||
4fd6931e | 588 | if (params->station_flags & STATION_FLAG_CHANGED) { |
07346f81 | 589 | spin_lock_bh(&sta->lock); |
4fd6931e JB |
590 | sta->flags &= ~WLAN_STA_AUTHORIZED; |
591 | if (params->station_flags & STATION_FLAG_AUTHORIZED) | |
592 | sta->flags |= WLAN_STA_AUTHORIZED; | |
593 | ||
594 | sta->flags &= ~WLAN_STA_SHORT_PREAMBLE; | |
595 | if (params->station_flags & STATION_FLAG_SHORT_PREAMBLE) | |
596 | sta->flags |= WLAN_STA_SHORT_PREAMBLE; | |
597 | ||
598 | sta->flags &= ~WLAN_STA_WME; | |
599 | if (params->station_flags & STATION_FLAG_WME) | |
600 | sta->flags |= WLAN_STA_WME; | |
07346f81 | 601 | spin_unlock_bh(&sta->lock); |
4fd6931e JB |
602 | } |
603 | ||
73651ee6 JB |
604 | /* |
605 | * FIXME: updating the following information is racy when this | |
606 | * function is called from ieee80211_change_station(). | |
607 | * However, all this information should be static so | |
608 | * maybe we should just reject attemps to change it. | |
609 | */ | |
610 | ||
4fd6931e JB |
611 | if (params->aid) { |
612 | sta->aid = params->aid; | |
613 | if (sta->aid > IEEE80211_MAX_AID) | |
614 | sta->aid = 0; /* XXX: should this be an error? */ | |
615 | } | |
616 | ||
617 | if (params->listen_interval >= 0) | |
618 | sta->listen_interval = params->listen_interval; | |
619 | ||
620 | if (params->supported_rates) { | |
621 | rates = 0; | |
8318d78a JB |
622 | sband = local->hw.wiphy->bands[local->oper_channel->band]; |
623 | ||
4fd6931e JB |
624 | for (i = 0; i < params->supported_rates_len; i++) { |
625 | int rate = (params->supported_rates[i] & 0x7f) * 5; | |
8318d78a JB |
626 | for (j = 0; j < sband->n_bitrates; j++) { |
627 | if (sband->bitrates[j].bitrate == rate) | |
4fd6931e JB |
628 | rates |= BIT(j); |
629 | } | |
630 | } | |
8318d78a | 631 | sta->supp_rates[local->oper_channel->band] = rates; |
4fd6931e | 632 | } |
c5dd9c2b | 633 | |
902acc78 | 634 | if (ieee80211_vif_is_mesh(&sdata->vif) && params->plink_action) { |
c5dd9c2b LCC |
635 | switch (params->plink_action) { |
636 | case PLINK_ACTION_OPEN: | |
637 | mesh_plink_open(sta); | |
638 | break; | |
639 | case PLINK_ACTION_BLOCK: | |
640 | mesh_plink_block(sta); | |
641 | break; | |
642 | } | |
902acc78 | 643 | } |
4fd6931e JB |
644 | } |
645 | ||
646 | static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev, | |
647 | u8 *mac, struct station_parameters *params) | |
648 | { | |
649 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
650 | struct sta_info *sta; | |
651 | struct ieee80211_sub_if_data *sdata; | |
73651ee6 | 652 | int err; |
4fd6931e JB |
653 | |
654 | /* Prevent a race with changing the rate control algorithm */ | |
655 | if (!netif_running(dev)) | |
656 | return -ENETDOWN; | |
657 | ||
4fd6931e JB |
658 | if (params->vlan) { |
659 | sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan); | |
660 | ||
679fda1a | 661 | if (sdata->vif.type != IEEE80211_IF_TYPE_VLAN && |
4fd6931e JB |
662 | sdata->vif.type != IEEE80211_IF_TYPE_AP) |
663 | return -EINVAL; | |
664 | } else | |
665 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
666 | ||
03e4497e JB |
667 | if (compare_ether_addr(mac, dev->dev_addr) == 0) |
668 | return -EINVAL; | |
669 | ||
670 | if (is_multicast_ether_addr(mac)) | |
671 | return -EINVAL; | |
672 | ||
673 | sta = sta_info_alloc(sdata, mac, GFP_KERNEL); | |
73651ee6 JB |
674 | if (!sta) |
675 | return -ENOMEM; | |
4fd6931e JB |
676 | |
677 | sta->flags = WLAN_STA_AUTH | WLAN_STA_ASSOC; | |
678 | ||
679 | sta_apply_parameters(local, sta, params); | |
680 | ||
681 | rate_control_rate_init(sta, local); | |
682 | ||
73651ee6 JB |
683 | rcu_read_lock(); |
684 | ||
685 | err = sta_info_insert(sta); | |
686 | if (err) { | |
93e5deb1 | 687 | /* STA has been freed */ |
73651ee6 JB |
688 | rcu_read_unlock(); |
689 | return err; | |
690 | } | |
691 | ||
692 | if (sdata->vif.type == IEEE80211_IF_TYPE_VLAN || | |
693 | sdata->vif.type == IEEE80211_IF_TYPE_AP) | |
694 | ieee80211_send_layer2_update(sta); | |
695 | ||
696 | rcu_read_unlock(); | |
697 | ||
4fd6931e JB |
698 | return 0; |
699 | } | |
700 | ||
701 | static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev, | |
702 | u8 *mac) | |
703 | { | |
d0709a65 JB |
704 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
705 | struct ieee80211_local *local = sdata->local; | |
4fd6931e JB |
706 | struct sta_info *sta; |
707 | ||
708 | if (mac) { | |
98dd6a57 JB |
709 | rcu_read_lock(); |
710 | ||
4fd6931e JB |
711 | /* XXX: get sta belonging to dev */ |
712 | sta = sta_info_get(local, mac); | |
98dd6a57 JB |
713 | if (!sta) { |
714 | rcu_read_unlock(); | |
4fd6931e | 715 | return -ENOENT; |
98dd6a57 | 716 | } |
4fd6931e | 717 | |
d0709a65 | 718 | sta_info_unlink(&sta); |
98dd6a57 JB |
719 | rcu_read_unlock(); |
720 | ||
4f6fab47 | 721 | sta_info_destroy(sta); |
4fd6931e | 722 | } else |
d0709a65 | 723 | sta_info_flush(local, sdata); |
4fd6931e JB |
724 | |
725 | return 0; | |
726 | } | |
727 | ||
728 | static int ieee80211_change_station(struct wiphy *wiphy, | |
729 | struct net_device *dev, | |
730 | u8 *mac, | |
731 | struct station_parameters *params) | |
732 | { | |
733 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
734 | struct sta_info *sta; | |
735 | struct ieee80211_sub_if_data *vlansdata; | |
736 | ||
98dd6a57 JB |
737 | rcu_read_lock(); |
738 | ||
4fd6931e JB |
739 | /* XXX: get sta belonging to dev */ |
740 | sta = sta_info_get(local, mac); | |
98dd6a57 JB |
741 | if (!sta) { |
742 | rcu_read_unlock(); | |
4fd6931e | 743 | return -ENOENT; |
98dd6a57 | 744 | } |
4fd6931e | 745 | |
d0709a65 | 746 | if (params->vlan && params->vlan != sta->sdata->dev) { |
4fd6931e JB |
747 | vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan); |
748 | ||
679fda1a | 749 | if (vlansdata->vif.type != IEEE80211_IF_TYPE_VLAN && |
98dd6a57 JB |
750 | vlansdata->vif.type != IEEE80211_IF_TYPE_AP) { |
751 | rcu_read_unlock(); | |
4fd6931e | 752 | return -EINVAL; |
98dd6a57 | 753 | } |
4fd6931e | 754 | |
d0709a65 | 755 | sta->sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan); |
4fd6931e JB |
756 | ieee80211_send_layer2_update(sta); |
757 | } | |
758 | ||
759 | sta_apply_parameters(local, sta, params); | |
760 | ||
98dd6a57 JB |
761 | rcu_read_unlock(); |
762 | ||
4fd6931e JB |
763 | return 0; |
764 | } | |
765 | ||
c5dd9c2b LCC |
766 | #ifdef CONFIG_MAC80211_MESH |
767 | static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev, | |
768 | u8 *dst, u8 *next_hop) | |
769 | { | |
770 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
771 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
772 | struct mesh_path *mpath; | |
773 | struct sta_info *sta; | |
774 | int err; | |
775 | ||
776 | if (!netif_running(dev)) | |
777 | return -ENETDOWN; | |
778 | ||
779 | if (sdata->vif.type != IEEE80211_IF_TYPE_MESH_POINT) | |
780 | return -ENOTSUPP; | |
781 | ||
d0709a65 | 782 | rcu_read_lock(); |
c5dd9c2b | 783 | sta = sta_info_get(local, next_hop); |
d0709a65 JB |
784 | if (!sta) { |
785 | rcu_read_unlock(); | |
c5dd9c2b | 786 | return -ENOENT; |
d0709a65 | 787 | } |
c5dd9c2b LCC |
788 | |
789 | err = mesh_path_add(dst, dev); | |
d0709a65 JB |
790 | if (err) { |
791 | rcu_read_unlock(); | |
c5dd9c2b | 792 | return err; |
d0709a65 | 793 | } |
c5dd9c2b | 794 | |
c5dd9c2b LCC |
795 | mpath = mesh_path_lookup(dst, dev); |
796 | if (!mpath) { | |
797 | rcu_read_unlock(); | |
c5dd9c2b LCC |
798 | return -ENXIO; |
799 | } | |
800 | mesh_path_fix_nexthop(mpath, sta); | |
d0709a65 | 801 | |
c5dd9c2b LCC |
802 | rcu_read_unlock(); |
803 | return 0; | |
804 | } | |
805 | ||
806 | static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev, | |
807 | u8 *dst) | |
808 | { | |
809 | if (dst) | |
cfa22c71 | 810 | return mesh_path_del(dst, dev); |
c5dd9c2b LCC |
811 | |
812 | mesh_path_flush(dev); | |
813 | return 0; | |
814 | } | |
815 | ||
816 | static int ieee80211_change_mpath(struct wiphy *wiphy, | |
817 | struct net_device *dev, | |
818 | u8 *dst, u8 *next_hop) | |
819 | { | |
820 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
821 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
822 | struct mesh_path *mpath; | |
823 | struct sta_info *sta; | |
824 | ||
825 | if (!netif_running(dev)) | |
826 | return -ENETDOWN; | |
827 | ||
828 | if (sdata->vif.type != IEEE80211_IF_TYPE_MESH_POINT) | |
829 | return -ENOTSUPP; | |
830 | ||
d0709a65 JB |
831 | rcu_read_lock(); |
832 | ||
c5dd9c2b | 833 | sta = sta_info_get(local, next_hop); |
d0709a65 JB |
834 | if (!sta) { |
835 | rcu_read_unlock(); | |
c5dd9c2b | 836 | return -ENOENT; |
d0709a65 | 837 | } |
c5dd9c2b | 838 | |
c5dd9c2b LCC |
839 | mpath = mesh_path_lookup(dst, dev); |
840 | if (!mpath) { | |
841 | rcu_read_unlock(); | |
c5dd9c2b LCC |
842 | return -ENOENT; |
843 | } | |
844 | ||
845 | mesh_path_fix_nexthop(mpath, sta); | |
d0709a65 | 846 | |
c5dd9c2b LCC |
847 | rcu_read_unlock(); |
848 | return 0; | |
849 | } | |
850 | ||
851 | static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop, | |
852 | struct mpath_info *pinfo) | |
853 | { | |
854 | if (mpath->next_hop) | |
855 | memcpy(next_hop, mpath->next_hop->addr, ETH_ALEN); | |
856 | else | |
857 | memset(next_hop, 0, ETH_ALEN); | |
858 | ||
859 | pinfo->filled = MPATH_INFO_FRAME_QLEN | | |
860 | MPATH_INFO_DSN | | |
861 | MPATH_INFO_METRIC | | |
862 | MPATH_INFO_EXPTIME | | |
863 | MPATH_INFO_DISCOVERY_TIMEOUT | | |
864 | MPATH_INFO_DISCOVERY_RETRIES | | |
865 | MPATH_INFO_FLAGS; | |
866 | ||
867 | pinfo->frame_qlen = mpath->frame_queue.qlen; | |
868 | pinfo->dsn = mpath->dsn; | |
869 | pinfo->metric = mpath->metric; | |
870 | if (time_before(jiffies, mpath->exp_time)) | |
871 | pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies); | |
872 | pinfo->discovery_timeout = | |
873 | jiffies_to_msecs(mpath->discovery_timeout); | |
874 | pinfo->discovery_retries = mpath->discovery_retries; | |
875 | pinfo->flags = 0; | |
876 | if (mpath->flags & MESH_PATH_ACTIVE) | |
877 | pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE; | |
878 | if (mpath->flags & MESH_PATH_RESOLVING) | |
879 | pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING; | |
880 | if (mpath->flags & MESH_PATH_DSN_VALID) | |
881 | pinfo->flags |= NL80211_MPATH_FLAG_DSN_VALID; | |
882 | if (mpath->flags & MESH_PATH_FIXED) | |
883 | pinfo->flags |= NL80211_MPATH_FLAG_FIXED; | |
884 | if (mpath->flags & MESH_PATH_RESOLVING) | |
885 | pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING; | |
886 | ||
887 | pinfo->flags = mpath->flags; | |
888 | } | |
889 | ||
890 | static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev, | |
891 | u8 *dst, u8 *next_hop, struct mpath_info *pinfo) | |
892 | ||
893 | { | |
894 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
895 | struct mesh_path *mpath; | |
896 | ||
897 | if (sdata->vif.type != IEEE80211_IF_TYPE_MESH_POINT) | |
898 | return -ENOTSUPP; | |
899 | ||
900 | rcu_read_lock(); | |
901 | mpath = mesh_path_lookup(dst, dev); | |
902 | if (!mpath) { | |
903 | rcu_read_unlock(); | |
904 | return -ENOENT; | |
905 | } | |
906 | memcpy(dst, mpath->dst, ETH_ALEN); | |
907 | mpath_set_pinfo(mpath, next_hop, pinfo); | |
908 | rcu_read_unlock(); | |
909 | return 0; | |
910 | } | |
911 | ||
912 | static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev, | |
913 | int idx, u8 *dst, u8 *next_hop, | |
914 | struct mpath_info *pinfo) | |
915 | { | |
916 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
917 | struct mesh_path *mpath; | |
918 | ||
919 | if (sdata->vif.type != IEEE80211_IF_TYPE_MESH_POINT) | |
920 | return -ENOTSUPP; | |
921 | ||
922 | rcu_read_lock(); | |
923 | mpath = mesh_path_lookup_by_idx(idx, dev); | |
924 | if (!mpath) { | |
925 | rcu_read_unlock(); | |
926 | return -ENOENT; | |
927 | } | |
928 | memcpy(dst, mpath->dst, ETH_ALEN); | |
929 | mpath_set_pinfo(mpath, next_hop, pinfo); | |
930 | rcu_read_unlock(); | |
931 | return 0; | |
932 | } | |
933 | #endif | |
934 | ||
f0706e82 JB |
935 | struct cfg80211_ops mac80211_config_ops = { |
936 | .add_virtual_intf = ieee80211_add_iface, | |
937 | .del_virtual_intf = ieee80211_del_iface, | |
42613db7 | 938 | .change_virtual_intf = ieee80211_change_iface, |
e8cbb4cb JB |
939 | .add_key = ieee80211_add_key, |
940 | .del_key = ieee80211_del_key, | |
62da92fb | 941 | .get_key = ieee80211_get_key, |
e8cbb4cb | 942 | .set_default_key = ieee80211_config_default_key, |
5dfdaf58 JB |
943 | .add_beacon = ieee80211_add_beacon, |
944 | .set_beacon = ieee80211_set_beacon, | |
945 | .del_beacon = ieee80211_del_beacon, | |
4fd6931e JB |
946 | .add_station = ieee80211_add_station, |
947 | .del_station = ieee80211_del_station, | |
948 | .change_station = ieee80211_change_station, | |
7bbdd2d9 | 949 | .get_station = ieee80211_get_station, |
c5dd9c2b LCC |
950 | .dump_station = ieee80211_dump_station, |
951 | #ifdef CONFIG_MAC80211_MESH | |
952 | .add_mpath = ieee80211_add_mpath, | |
953 | .del_mpath = ieee80211_del_mpath, | |
954 | .change_mpath = ieee80211_change_mpath, | |
955 | .get_mpath = ieee80211_get_mpath, | |
956 | .dump_mpath = ieee80211_dump_mpath, | |
957 | #endif | |
f0706e82 | 958 | }; |