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" |
4fd6931e | 17 | #include "ieee80211_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 | |
42613db7 JB |
36 | default: |
37 | return IEEE80211_IF_TYPE_INVALID; | |
38 | } | |
39 | } | |
40 | ||
f0706e82 | 41 | static int ieee80211_add_iface(struct wiphy *wiphy, char *name, |
2ec600d6 LCC |
42 | enum nl80211_iftype type, u32 *flags, |
43 | struct vif_params *params) | |
f0706e82 JB |
44 | { |
45 | struct ieee80211_local *local = wiphy_priv(wiphy); | |
42613db7 | 46 | enum ieee80211_if_types itype; |
8cc9a739 MW |
47 | struct net_device *dev; |
48 | struct ieee80211_sub_if_data *sdata; | |
49 | int err; | |
f0706e82 JB |
50 | |
51 | if (unlikely(local->reg_state != IEEE80211_DEV_REGISTERED)) | |
52 | return -ENODEV; | |
53 | ||
42613db7 JB |
54 | itype = nl80211_type_to_mac80211_type(type); |
55 | if (itype == IEEE80211_IF_TYPE_INVALID) | |
f0706e82 | 56 | return -EINVAL; |
f0706e82 | 57 | |
ee385855 | 58 | err = ieee80211_if_add(local->mdev, name, &dev, itype, params); |
8cc9a739 MW |
59 | if (err || itype != IEEE80211_IF_TYPE_MNTR || !flags) |
60 | return err; | |
61 | ||
62 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
63 | sdata->u.mntr_flags = *flags; | |
64 | return 0; | |
f0706e82 JB |
65 | } |
66 | ||
67 | static int ieee80211_del_iface(struct wiphy *wiphy, int ifindex) | |
68 | { | |
69 | struct ieee80211_local *local = wiphy_priv(wiphy); | |
70 | struct net_device *dev; | |
71 | char *name; | |
72 | ||
73 | if (unlikely(local->reg_state != IEEE80211_DEV_REGISTERED)) | |
74 | return -ENODEV; | |
75 | ||
42613db7 JB |
76 | /* we're under RTNL */ |
77 | dev = __dev_get_by_index(&init_net, ifindex); | |
f0706e82 JB |
78 | if (!dev) |
79 | return 0; | |
80 | ||
81 | name = dev->name; | |
f0706e82 JB |
82 | |
83 | return ieee80211_if_remove(local->mdev, name, -1); | |
84 | } | |
85 | ||
42613db7 | 86 | static int ieee80211_change_iface(struct wiphy *wiphy, int ifindex, |
2ec600d6 LCC |
87 | enum nl80211_iftype type, u32 *flags, |
88 | struct vif_params *params) | |
42613db7 JB |
89 | { |
90 | struct ieee80211_local *local = wiphy_priv(wiphy); | |
91 | struct net_device *dev; | |
92 | enum ieee80211_if_types itype; | |
93 | struct ieee80211_sub_if_data *sdata; | |
94 | ||
95 | if (unlikely(local->reg_state != IEEE80211_DEV_REGISTERED)) | |
96 | return -ENODEV; | |
97 | ||
98 | /* we're under RTNL */ | |
99 | dev = __dev_get_by_index(&init_net, ifindex); | |
100 | if (!dev) | |
101 | return -ENODEV; | |
102 | ||
103 | if (netif_running(dev)) | |
104 | return -EBUSY; | |
105 | ||
106 | itype = nl80211_type_to_mac80211_type(type); | |
107 | if (itype == IEEE80211_IF_TYPE_INVALID) | |
108 | return -EINVAL; | |
109 | ||
110 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
111 | ||
51fb61e7 | 112 | if (sdata->vif.type == IEEE80211_IF_TYPE_VLAN) |
42613db7 JB |
113 | return -EOPNOTSUPP; |
114 | ||
115 | ieee80211_if_reinit(dev); | |
116 | ieee80211_if_set_type(dev, itype); | |
117 | ||
902acc78 JB |
118 | if (ieee80211_vif_is_mesh(&sdata->vif) && params->mesh_id_len) |
119 | ieee80211_if_sta_set_mesh_id(&sdata->u.sta, | |
120 | params->mesh_id_len, | |
121 | params->mesh_id); | |
c5dd9c2b | 122 | |
8cc9a739 MW |
123 | if (sdata->vif.type != IEEE80211_IF_TYPE_MNTR || !flags) |
124 | return 0; | |
125 | ||
126 | sdata->u.mntr_flags = *flags; | |
42613db7 JB |
127 | return 0; |
128 | } | |
129 | ||
e8cbb4cb JB |
130 | static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev, |
131 | u8 key_idx, u8 *mac_addr, | |
132 | struct key_params *params) | |
133 | { | |
134 | struct ieee80211_sub_if_data *sdata; | |
135 | struct sta_info *sta = NULL; | |
136 | enum ieee80211_key_alg alg; | |
db4d1169 | 137 | struct ieee80211_key *key; |
3b96766f | 138 | int err; |
e8cbb4cb JB |
139 | |
140 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
141 | ||
142 | switch (params->cipher) { | |
143 | case WLAN_CIPHER_SUITE_WEP40: | |
144 | case WLAN_CIPHER_SUITE_WEP104: | |
145 | alg = ALG_WEP; | |
146 | break; | |
147 | case WLAN_CIPHER_SUITE_TKIP: | |
148 | alg = ALG_TKIP; | |
149 | break; | |
150 | case WLAN_CIPHER_SUITE_CCMP: | |
151 | alg = ALG_CCMP; | |
152 | break; | |
153 | default: | |
154 | return -EINVAL; | |
155 | } | |
156 | ||
db4d1169 JB |
157 | key = ieee80211_key_alloc(alg, key_idx, params->key_len, params->key); |
158 | if (!key) | |
159 | return -ENOMEM; | |
160 | ||
3b96766f JB |
161 | rcu_read_lock(); |
162 | ||
e8cbb4cb JB |
163 | if (mac_addr) { |
164 | sta = sta_info_get(sdata->local, mac_addr); | |
db4d1169 JB |
165 | if (!sta) { |
166 | ieee80211_key_free(key); | |
3b96766f JB |
167 | err = -ENOENT; |
168 | goto out_unlock; | |
db4d1169 | 169 | } |
e8cbb4cb JB |
170 | } |
171 | ||
db4d1169 JB |
172 | ieee80211_key_link(key, sdata, sta); |
173 | ||
3b96766f JB |
174 | err = 0; |
175 | out_unlock: | |
176 | rcu_read_unlock(); | |
177 | ||
178 | return err; | |
e8cbb4cb JB |
179 | } |
180 | ||
181 | static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev, | |
182 | u8 key_idx, u8 *mac_addr) | |
183 | { | |
184 | struct ieee80211_sub_if_data *sdata; | |
185 | struct sta_info *sta; | |
186 | int ret; | |
187 | ||
188 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
189 | ||
3b96766f JB |
190 | rcu_read_lock(); |
191 | ||
e8cbb4cb | 192 | if (mac_addr) { |
3b96766f JB |
193 | ret = -ENOENT; |
194 | ||
e8cbb4cb JB |
195 | sta = sta_info_get(sdata->local, mac_addr); |
196 | if (!sta) | |
3b96766f | 197 | goto out_unlock; |
e8cbb4cb | 198 | |
db4d1169 | 199 | if (sta->key) { |
d0709a65 | 200 | ieee80211_key_free(sta->key); |
db4d1169 | 201 | WARN_ON(sta->key); |
3b96766f JB |
202 | ret = 0; |
203 | } | |
e8cbb4cb | 204 | |
3b96766f | 205 | goto out_unlock; |
e8cbb4cb JB |
206 | } |
207 | ||
3b96766f JB |
208 | if (!sdata->keys[key_idx]) { |
209 | ret = -ENOENT; | |
210 | goto out_unlock; | |
211 | } | |
e8cbb4cb | 212 | |
d0709a65 | 213 | ieee80211_key_free(sdata->keys[key_idx]); |
db4d1169 | 214 | WARN_ON(sdata->keys[key_idx]); |
e8cbb4cb | 215 | |
3b96766f JB |
216 | ret = 0; |
217 | out_unlock: | |
218 | rcu_read_unlock(); | |
219 | ||
220 | return ret; | |
e8cbb4cb JB |
221 | } |
222 | ||
62da92fb JB |
223 | static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev, |
224 | u8 key_idx, u8 *mac_addr, void *cookie, | |
225 | void (*callback)(void *cookie, | |
226 | struct key_params *params)) | |
227 | { | |
228 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
229 | struct sta_info *sta = NULL; | |
230 | u8 seq[6] = {0}; | |
231 | struct key_params params; | |
232 | struct ieee80211_key *key; | |
233 | u32 iv32; | |
234 | u16 iv16; | |
235 | int err = -ENOENT; | |
236 | ||
3b96766f JB |
237 | rcu_read_lock(); |
238 | ||
62da92fb JB |
239 | if (mac_addr) { |
240 | sta = sta_info_get(sdata->local, mac_addr); | |
241 | if (!sta) | |
242 | goto out; | |
243 | ||
244 | key = sta->key; | |
245 | } else | |
246 | key = sdata->keys[key_idx]; | |
247 | ||
248 | if (!key) | |
249 | goto out; | |
250 | ||
251 | memset(¶ms, 0, sizeof(params)); | |
252 | ||
253 | switch (key->conf.alg) { | |
254 | case ALG_TKIP: | |
255 | params.cipher = WLAN_CIPHER_SUITE_TKIP; | |
256 | ||
257 | iv32 = key->u.tkip.iv32; | |
258 | iv16 = key->u.tkip.iv16; | |
259 | ||
260 | if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE && | |
261 | sdata->local->ops->get_tkip_seq) | |
262 | sdata->local->ops->get_tkip_seq( | |
263 | local_to_hw(sdata->local), | |
264 | key->conf.hw_key_idx, | |
265 | &iv32, &iv16); | |
266 | ||
267 | seq[0] = iv16 & 0xff; | |
268 | seq[1] = (iv16 >> 8) & 0xff; | |
269 | seq[2] = iv32 & 0xff; | |
270 | seq[3] = (iv32 >> 8) & 0xff; | |
271 | seq[4] = (iv32 >> 16) & 0xff; | |
272 | seq[5] = (iv32 >> 24) & 0xff; | |
273 | params.seq = seq; | |
274 | params.seq_len = 6; | |
275 | break; | |
276 | case ALG_CCMP: | |
277 | params.cipher = WLAN_CIPHER_SUITE_CCMP; | |
278 | seq[0] = key->u.ccmp.tx_pn[5]; | |
279 | seq[1] = key->u.ccmp.tx_pn[4]; | |
280 | seq[2] = key->u.ccmp.tx_pn[3]; | |
281 | seq[3] = key->u.ccmp.tx_pn[2]; | |
282 | seq[4] = key->u.ccmp.tx_pn[1]; | |
283 | seq[5] = key->u.ccmp.tx_pn[0]; | |
284 | params.seq = seq; | |
285 | params.seq_len = 6; | |
286 | break; | |
287 | case ALG_WEP: | |
288 | if (key->conf.keylen == 5) | |
289 | params.cipher = WLAN_CIPHER_SUITE_WEP40; | |
290 | else | |
291 | params.cipher = WLAN_CIPHER_SUITE_WEP104; | |
292 | break; | |
293 | } | |
294 | ||
295 | params.key = key->conf.key; | |
296 | params.key_len = key->conf.keylen; | |
297 | ||
298 | callback(cookie, ¶ms); | |
299 | err = 0; | |
300 | ||
301 | out: | |
3b96766f | 302 | rcu_read_unlock(); |
62da92fb JB |
303 | return err; |
304 | } | |
305 | ||
e8cbb4cb JB |
306 | static int ieee80211_config_default_key(struct wiphy *wiphy, |
307 | struct net_device *dev, | |
308 | u8 key_idx) | |
309 | { | |
310 | struct ieee80211_sub_if_data *sdata; | |
311 | ||
3b96766f JB |
312 | rcu_read_lock(); |
313 | ||
e8cbb4cb JB |
314 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
315 | ieee80211_set_default_key(sdata, key_idx); | |
316 | ||
3b96766f JB |
317 | rcu_read_unlock(); |
318 | ||
e8cbb4cb JB |
319 | return 0; |
320 | } | |
321 | ||
c5dd9c2b LCC |
322 | static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo) |
323 | { | |
d0709a65 | 324 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
c5dd9c2b LCC |
325 | |
326 | sinfo->filled = STATION_INFO_INACTIVE_TIME | | |
327 | STATION_INFO_RX_BYTES | | |
328 | STATION_INFO_TX_BYTES; | |
329 | ||
330 | sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx); | |
331 | sinfo->rx_bytes = sta->rx_bytes; | |
332 | sinfo->tx_bytes = sta->tx_bytes; | |
333 | ||
902acc78 | 334 | if (ieee80211_vif_is_mesh(&sdata->vif)) { |
c5dd9c2b | 335 | #ifdef CONFIG_MAC80211_MESH |
c5dd9c2b LCC |
336 | sinfo->filled |= STATION_INFO_LLID | |
337 | STATION_INFO_PLID | | |
338 | STATION_INFO_PLINK_STATE; | |
339 | ||
340 | sinfo->llid = le16_to_cpu(sta->llid); | |
341 | sinfo->plid = le16_to_cpu(sta->plid); | |
342 | sinfo->plink_state = sta->plink_state; | |
c5dd9c2b | 343 | #endif |
902acc78 | 344 | } |
c5dd9c2b LCC |
345 | } |
346 | ||
347 | ||
348 | static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev, | |
349 | int idx, u8 *mac, struct station_info *sinfo) | |
350 | { | |
351 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
352 | struct sta_info *sta; | |
d0709a65 JB |
353 | int ret = -ENOENT; |
354 | ||
355 | rcu_read_lock(); | |
c5dd9c2b LCC |
356 | |
357 | sta = sta_info_get_by_idx(local, idx, dev); | |
d0709a65 JB |
358 | if (sta) { |
359 | ret = 0; | |
360 | memcpy(mac, sta->addr, ETH_ALEN); | |
361 | sta_set_sinfo(sta, sinfo); | |
362 | } | |
c5dd9c2b | 363 | |
d0709a65 | 364 | rcu_read_unlock(); |
c5dd9c2b | 365 | |
d0709a65 | 366 | return ret; |
c5dd9c2b LCC |
367 | } |
368 | ||
7bbdd2d9 | 369 | static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev, |
2ec600d6 | 370 | u8 *mac, struct station_info *sinfo) |
7bbdd2d9 JB |
371 | { |
372 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
373 | struct sta_info *sta; | |
d0709a65 | 374 | int ret = -ENOENT; |
7bbdd2d9 | 375 | |
d0709a65 | 376 | rcu_read_lock(); |
7bbdd2d9 JB |
377 | |
378 | /* XXX: verify sta->dev == dev */ | |
7bbdd2d9 | 379 | |
d0709a65 JB |
380 | sta = sta_info_get(local, mac); |
381 | if (sta) { | |
382 | ret = 0; | |
383 | sta_set_sinfo(sta, sinfo); | |
384 | } | |
385 | ||
386 | rcu_read_unlock(); | |
387 | ||
388 | return ret; | |
7bbdd2d9 JB |
389 | } |
390 | ||
5dfdaf58 JB |
391 | /* |
392 | * This handles both adding a beacon and setting new beacon info | |
393 | */ | |
394 | static int ieee80211_config_beacon(struct ieee80211_sub_if_data *sdata, | |
395 | struct beacon_parameters *params) | |
396 | { | |
397 | struct beacon_data *new, *old; | |
398 | int new_head_len, new_tail_len; | |
399 | int size; | |
400 | int err = -EINVAL; | |
401 | ||
402 | old = sdata->u.ap.beacon; | |
403 | ||
404 | /* head must not be zero-length */ | |
405 | if (params->head && !params->head_len) | |
406 | return -EINVAL; | |
407 | ||
408 | /* | |
409 | * This is a kludge. beacon interval should really be part | |
410 | * of the beacon information. | |
411 | */ | |
412 | if (params->interval) { | |
413 | sdata->local->hw.conf.beacon_int = params->interval; | |
414 | if (ieee80211_hw_config(sdata->local)) | |
415 | return -EINVAL; | |
416 | /* | |
417 | * We updated some parameter so if below bails out | |
418 | * it's not an error. | |
419 | */ | |
420 | err = 0; | |
421 | } | |
422 | ||
423 | /* Need to have a beacon head if we don't have one yet */ | |
424 | if (!params->head && !old) | |
425 | return err; | |
426 | ||
427 | /* sorry, no way to start beaconing without dtim period */ | |
428 | if (!params->dtim_period && !old) | |
429 | return err; | |
430 | ||
431 | /* new or old head? */ | |
432 | if (params->head) | |
433 | new_head_len = params->head_len; | |
434 | else | |
435 | new_head_len = old->head_len; | |
436 | ||
437 | /* new or old tail? */ | |
438 | if (params->tail || !old) | |
439 | /* params->tail_len will be zero for !params->tail */ | |
440 | new_tail_len = params->tail_len; | |
441 | else | |
442 | new_tail_len = old->tail_len; | |
443 | ||
444 | size = sizeof(*new) + new_head_len + new_tail_len; | |
445 | ||
446 | new = kzalloc(size, GFP_KERNEL); | |
447 | if (!new) | |
448 | return -ENOMEM; | |
449 | ||
450 | /* start filling the new info now */ | |
451 | ||
452 | /* new or old dtim period? */ | |
453 | if (params->dtim_period) | |
454 | new->dtim_period = params->dtim_period; | |
455 | else | |
456 | new->dtim_period = old->dtim_period; | |
457 | ||
458 | /* | |
459 | * pointers go into the block we allocated, | |
460 | * memory is | beacon_data | head | tail | | |
461 | */ | |
462 | new->head = ((u8 *) new) + sizeof(*new); | |
463 | new->tail = new->head + new_head_len; | |
464 | new->head_len = new_head_len; | |
465 | new->tail_len = new_tail_len; | |
466 | ||
467 | /* copy in head */ | |
468 | if (params->head) | |
469 | memcpy(new->head, params->head, new_head_len); | |
470 | else | |
471 | memcpy(new->head, old->head, new_head_len); | |
472 | ||
473 | /* copy in optional tail */ | |
474 | if (params->tail) | |
475 | memcpy(new->tail, params->tail, new_tail_len); | |
476 | else | |
477 | if (old) | |
478 | memcpy(new->tail, old->tail, new_tail_len); | |
479 | ||
480 | rcu_assign_pointer(sdata->u.ap.beacon, new); | |
481 | ||
482 | synchronize_rcu(); | |
483 | ||
484 | kfree(old); | |
485 | ||
486 | return ieee80211_if_config_beacon(sdata->dev); | |
487 | } | |
488 | ||
489 | static int ieee80211_add_beacon(struct wiphy *wiphy, struct net_device *dev, | |
490 | struct beacon_parameters *params) | |
491 | { | |
492 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
493 | struct beacon_data *old; | |
494 | ||
495 | if (sdata->vif.type != IEEE80211_IF_TYPE_AP) | |
496 | return -EINVAL; | |
497 | ||
498 | old = sdata->u.ap.beacon; | |
499 | ||
500 | if (old) | |
501 | return -EALREADY; | |
502 | ||
503 | return ieee80211_config_beacon(sdata, params); | |
504 | } | |
505 | ||
506 | static int ieee80211_set_beacon(struct wiphy *wiphy, struct net_device *dev, | |
507 | struct beacon_parameters *params) | |
508 | { | |
509 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
510 | struct beacon_data *old; | |
511 | ||
512 | if (sdata->vif.type != IEEE80211_IF_TYPE_AP) | |
513 | return -EINVAL; | |
514 | ||
515 | old = sdata->u.ap.beacon; | |
516 | ||
517 | if (!old) | |
518 | return -ENOENT; | |
519 | ||
520 | return ieee80211_config_beacon(sdata, params); | |
521 | } | |
522 | ||
523 | static int ieee80211_del_beacon(struct wiphy *wiphy, struct net_device *dev) | |
524 | { | |
525 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
526 | struct beacon_data *old; | |
527 | ||
528 | if (sdata->vif.type != IEEE80211_IF_TYPE_AP) | |
529 | return -EINVAL; | |
530 | ||
531 | old = sdata->u.ap.beacon; | |
532 | ||
533 | if (!old) | |
534 | return -ENOENT; | |
535 | ||
536 | rcu_assign_pointer(sdata->u.ap.beacon, NULL); | |
537 | synchronize_rcu(); | |
538 | kfree(old); | |
539 | ||
540 | return ieee80211_if_config_beacon(dev); | |
541 | } | |
542 | ||
4fd6931e JB |
543 | /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */ |
544 | struct iapp_layer2_update { | |
545 | u8 da[ETH_ALEN]; /* broadcast */ | |
546 | u8 sa[ETH_ALEN]; /* STA addr */ | |
547 | __be16 len; /* 6 */ | |
548 | u8 dsap; /* 0 */ | |
549 | u8 ssap; /* 0 */ | |
550 | u8 control; | |
551 | u8 xid_info[3]; | |
552 | } __attribute__ ((packed)); | |
553 | ||
554 | static void ieee80211_send_layer2_update(struct sta_info *sta) | |
555 | { | |
556 | struct iapp_layer2_update *msg; | |
557 | struct sk_buff *skb; | |
558 | ||
559 | /* Send Level 2 Update Frame to update forwarding tables in layer 2 | |
560 | * bridge devices */ | |
561 | ||
562 | skb = dev_alloc_skb(sizeof(*msg)); | |
563 | if (!skb) | |
564 | return; | |
565 | msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg)); | |
566 | ||
567 | /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID) | |
568 | * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */ | |
569 | ||
570 | memset(msg->da, 0xff, ETH_ALEN); | |
571 | memcpy(msg->sa, sta->addr, ETH_ALEN); | |
572 | msg->len = htons(6); | |
573 | msg->dsap = 0; | |
574 | msg->ssap = 0x01; /* NULL LSAP, CR Bit: Response */ | |
575 | msg->control = 0xaf; /* XID response lsb.1111F101. | |
576 | * F=0 (no poll command; unsolicited frame) */ | |
577 | msg->xid_info[0] = 0x81; /* XID format identifier */ | |
578 | msg->xid_info[1] = 1; /* LLC types/classes: Type 1 LLC */ | |
579 | msg->xid_info[2] = 0; /* XID sender's receive window size (RW) */ | |
580 | ||
d0709a65 JB |
581 | skb->dev = sta->sdata->dev; |
582 | skb->protocol = eth_type_trans(skb, sta->sdata->dev); | |
4fd6931e JB |
583 | memset(skb->cb, 0, sizeof(skb->cb)); |
584 | netif_rx(skb); | |
585 | } | |
586 | ||
587 | static void sta_apply_parameters(struct ieee80211_local *local, | |
588 | struct sta_info *sta, | |
589 | struct station_parameters *params) | |
590 | { | |
591 | u32 rates; | |
592 | int i, j; | |
8318d78a | 593 | struct ieee80211_supported_band *sband; |
d0709a65 | 594 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
4fd6931e | 595 | |
73651ee6 JB |
596 | /* |
597 | * FIXME: updating the flags is racy when this function is | |
598 | * called from ieee80211_change_station(), this will | |
599 | * be resolved in a future patch. | |
600 | */ | |
601 | ||
4fd6931e JB |
602 | if (params->station_flags & STATION_FLAG_CHANGED) { |
603 | sta->flags &= ~WLAN_STA_AUTHORIZED; | |
604 | if (params->station_flags & STATION_FLAG_AUTHORIZED) | |
605 | sta->flags |= WLAN_STA_AUTHORIZED; | |
606 | ||
607 | sta->flags &= ~WLAN_STA_SHORT_PREAMBLE; | |
608 | if (params->station_flags & STATION_FLAG_SHORT_PREAMBLE) | |
609 | sta->flags |= WLAN_STA_SHORT_PREAMBLE; | |
610 | ||
611 | sta->flags &= ~WLAN_STA_WME; | |
612 | if (params->station_flags & STATION_FLAG_WME) | |
613 | sta->flags |= WLAN_STA_WME; | |
614 | } | |
615 | ||
73651ee6 JB |
616 | /* |
617 | * FIXME: updating the following information is racy when this | |
618 | * function is called from ieee80211_change_station(). | |
619 | * However, all this information should be static so | |
620 | * maybe we should just reject attemps to change it. | |
621 | */ | |
622 | ||
4fd6931e JB |
623 | if (params->aid) { |
624 | sta->aid = params->aid; | |
625 | if (sta->aid > IEEE80211_MAX_AID) | |
626 | sta->aid = 0; /* XXX: should this be an error? */ | |
627 | } | |
628 | ||
629 | if (params->listen_interval >= 0) | |
630 | sta->listen_interval = params->listen_interval; | |
631 | ||
632 | if (params->supported_rates) { | |
633 | rates = 0; | |
8318d78a JB |
634 | sband = local->hw.wiphy->bands[local->oper_channel->band]; |
635 | ||
4fd6931e JB |
636 | for (i = 0; i < params->supported_rates_len; i++) { |
637 | int rate = (params->supported_rates[i] & 0x7f) * 5; | |
8318d78a JB |
638 | for (j = 0; j < sband->n_bitrates; j++) { |
639 | if (sband->bitrates[j].bitrate == rate) | |
4fd6931e JB |
640 | rates |= BIT(j); |
641 | } | |
642 | } | |
8318d78a | 643 | sta->supp_rates[local->oper_channel->band] = rates; |
4fd6931e | 644 | } |
c5dd9c2b | 645 | |
902acc78 | 646 | if (ieee80211_vif_is_mesh(&sdata->vif) && params->plink_action) { |
c5dd9c2b LCC |
647 | switch (params->plink_action) { |
648 | case PLINK_ACTION_OPEN: | |
649 | mesh_plink_open(sta); | |
650 | break; | |
651 | case PLINK_ACTION_BLOCK: | |
652 | mesh_plink_block(sta); | |
653 | break; | |
654 | } | |
902acc78 | 655 | } |
4fd6931e JB |
656 | } |
657 | ||
658 | static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev, | |
659 | u8 *mac, struct station_parameters *params) | |
660 | { | |
661 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
662 | struct sta_info *sta; | |
663 | struct ieee80211_sub_if_data *sdata; | |
73651ee6 | 664 | int err; |
4fd6931e JB |
665 | |
666 | /* Prevent a race with changing the rate control algorithm */ | |
667 | if (!netif_running(dev)) | |
668 | return -ENETDOWN; | |
669 | ||
4fd6931e JB |
670 | if (params->vlan) { |
671 | sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan); | |
672 | ||
673 | if (sdata->vif.type != IEEE80211_IF_TYPE_VLAN || | |
674 | sdata->vif.type != IEEE80211_IF_TYPE_AP) | |
675 | return -EINVAL; | |
676 | } else | |
677 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
678 | ||
03e4497e JB |
679 | if (compare_ether_addr(mac, dev->dev_addr) == 0) |
680 | return -EINVAL; | |
681 | ||
682 | if (is_multicast_ether_addr(mac)) | |
683 | return -EINVAL; | |
684 | ||
685 | sta = sta_info_alloc(sdata, mac, GFP_KERNEL); | |
73651ee6 JB |
686 | if (!sta) |
687 | return -ENOMEM; | |
4fd6931e JB |
688 | |
689 | sta->flags = WLAN_STA_AUTH | WLAN_STA_ASSOC; | |
690 | ||
691 | sta_apply_parameters(local, sta, params); | |
692 | ||
693 | rate_control_rate_init(sta, local); | |
694 | ||
73651ee6 JB |
695 | rcu_read_lock(); |
696 | ||
697 | err = sta_info_insert(sta); | |
698 | if (err) { | |
93e5deb1 | 699 | /* STA has been freed */ |
73651ee6 JB |
700 | rcu_read_unlock(); |
701 | return err; | |
702 | } | |
703 | ||
704 | if (sdata->vif.type == IEEE80211_IF_TYPE_VLAN || | |
705 | sdata->vif.type == IEEE80211_IF_TYPE_AP) | |
706 | ieee80211_send_layer2_update(sta); | |
707 | ||
708 | rcu_read_unlock(); | |
709 | ||
4fd6931e JB |
710 | return 0; |
711 | } | |
712 | ||
713 | static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev, | |
714 | u8 *mac) | |
715 | { | |
d0709a65 JB |
716 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
717 | struct ieee80211_local *local = sdata->local; | |
4fd6931e JB |
718 | struct sta_info *sta; |
719 | ||
720 | if (mac) { | |
721 | /* XXX: get sta belonging to dev */ | |
722 | sta = sta_info_get(local, mac); | |
723 | if (!sta) | |
724 | return -ENOENT; | |
725 | ||
d0709a65 | 726 | sta_info_unlink(&sta); |
4f6fab47 | 727 | sta_info_destroy(sta); |
4fd6931e | 728 | } else |
d0709a65 | 729 | sta_info_flush(local, sdata); |
4fd6931e JB |
730 | |
731 | return 0; | |
732 | } | |
733 | ||
734 | static int ieee80211_change_station(struct wiphy *wiphy, | |
735 | struct net_device *dev, | |
736 | u8 *mac, | |
737 | struct station_parameters *params) | |
738 | { | |
739 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
740 | struct sta_info *sta; | |
741 | struct ieee80211_sub_if_data *vlansdata; | |
742 | ||
743 | /* XXX: get sta belonging to dev */ | |
744 | sta = sta_info_get(local, mac); | |
745 | if (!sta) | |
746 | return -ENOENT; | |
747 | ||
d0709a65 | 748 | if (params->vlan && params->vlan != sta->sdata->dev) { |
4fd6931e JB |
749 | vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan); |
750 | ||
751 | if (vlansdata->vif.type != IEEE80211_IF_TYPE_VLAN || | |
752 | vlansdata->vif.type != IEEE80211_IF_TYPE_AP) | |
753 | return -EINVAL; | |
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 | ||
4fd6931e JB |
761 | return 0; |
762 | } | |
763 | ||
c5dd9c2b LCC |
764 | #ifdef CONFIG_MAC80211_MESH |
765 | static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev, | |
766 | u8 *dst, u8 *next_hop) | |
767 | { | |
768 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
769 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
770 | struct mesh_path *mpath; | |
771 | struct sta_info *sta; | |
772 | int err; | |
773 | ||
774 | if (!netif_running(dev)) | |
775 | return -ENETDOWN; | |
776 | ||
777 | if (sdata->vif.type != IEEE80211_IF_TYPE_MESH_POINT) | |
778 | return -ENOTSUPP; | |
779 | ||
d0709a65 | 780 | rcu_read_lock(); |
c5dd9c2b | 781 | sta = sta_info_get(local, next_hop); |
d0709a65 JB |
782 | if (!sta) { |
783 | rcu_read_unlock(); | |
c5dd9c2b | 784 | return -ENOENT; |
d0709a65 | 785 | } |
c5dd9c2b LCC |
786 | |
787 | err = mesh_path_add(dst, dev); | |
d0709a65 JB |
788 | if (err) { |
789 | rcu_read_unlock(); | |
c5dd9c2b | 790 | return err; |
d0709a65 | 791 | } |
c5dd9c2b | 792 | |
c5dd9c2b LCC |
793 | mpath = mesh_path_lookup(dst, dev); |
794 | if (!mpath) { | |
795 | rcu_read_unlock(); | |
c5dd9c2b LCC |
796 | return -ENXIO; |
797 | } | |
798 | mesh_path_fix_nexthop(mpath, sta); | |
d0709a65 | 799 | |
c5dd9c2b LCC |
800 | rcu_read_unlock(); |
801 | return 0; | |
802 | } | |
803 | ||
804 | static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev, | |
805 | u8 *dst) | |
806 | { | |
807 | if (dst) | |
cfa22c71 | 808 | return mesh_path_del(dst, dev); |
c5dd9c2b LCC |
809 | |
810 | mesh_path_flush(dev); | |
811 | return 0; | |
812 | } | |
813 | ||
814 | static int ieee80211_change_mpath(struct wiphy *wiphy, | |
815 | struct net_device *dev, | |
816 | u8 *dst, u8 *next_hop) | |
817 | { | |
818 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
819 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
820 | struct mesh_path *mpath; | |
821 | struct sta_info *sta; | |
822 | ||
823 | if (!netif_running(dev)) | |
824 | return -ENETDOWN; | |
825 | ||
826 | if (sdata->vif.type != IEEE80211_IF_TYPE_MESH_POINT) | |
827 | return -ENOTSUPP; | |
828 | ||
d0709a65 JB |
829 | rcu_read_lock(); |
830 | ||
c5dd9c2b | 831 | sta = sta_info_get(local, next_hop); |
d0709a65 JB |
832 | if (!sta) { |
833 | rcu_read_unlock(); | |
c5dd9c2b | 834 | return -ENOENT; |
d0709a65 | 835 | } |
c5dd9c2b | 836 | |
c5dd9c2b LCC |
837 | mpath = mesh_path_lookup(dst, dev); |
838 | if (!mpath) { | |
839 | rcu_read_unlock(); | |
c5dd9c2b LCC |
840 | return -ENOENT; |
841 | } | |
842 | ||
843 | mesh_path_fix_nexthop(mpath, sta); | |
d0709a65 | 844 | |
c5dd9c2b LCC |
845 | rcu_read_unlock(); |
846 | return 0; | |
847 | } | |
848 | ||
849 | static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop, | |
850 | struct mpath_info *pinfo) | |
851 | { | |
852 | if (mpath->next_hop) | |
853 | memcpy(next_hop, mpath->next_hop->addr, ETH_ALEN); | |
854 | else | |
855 | memset(next_hop, 0, ETH_ALEN); | |
856 | ||
857 | pinfo->filled = MPATH_INFO_FRAME_QLEN | | |
858 | MPATH_INFO_DSN | | |
859 | MPATH_INFO_METRIC | | |
860 | MPATH_INFO_EXPTIME | | |
861 | MPATH_INFO_DISCOVERY_TIMEOUT | | |
862 | MPATH_INFO_DISCOVERY_RETRIES | | |
863 | MPATH_INFO_FLAGS; | |
864 | ||
865 | pinfo->frame_qlen = mpath->frame_queue.qlen; | |
866 | pinfo->dsn = mpath->dsn; | |
867 | pinfo->metric = mpath->metric; | |
868 | if (time_before(jiffies, mpath->exp_time)) | |
869 | pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies); | |
870 | pinfo->discovery_timeout = | |
871 | jiffies_to_msecs(mpath->discovery_timeout); | |
872 | pinfo->discovery_retries = mpath->discovery_retries; | |
873 | pinfo->flags = 0; | |
874 | if (mpath->flags & MESH_PATH_ACTIVE) | |
875 | pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE; | |
876 | if (mpath->flags & MESH_PATH_RESOLVING) | |
877 | pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING; | |
878 | if (mpath->flags & MESH_PATH_DSN_VALID) | |
879 | pinfo->flags |= NL80211_MPATH_FLAG_DSN_VALID; | |
880 | if (mpath->flags & MESH_PATH_FIXED) | |
881 | pinfo->flags |= NL80211_MPATH_FLAG_FIXED; | |
882 | if (mpath->flags & MESH_PATH_RESOLVING) | |
883 | pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING; | |
884 | ||
885 | pinfo->flags = mpath->flags; | |
886 | } | |
887 | ||
888 | static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev, | |
889 | u8 *dst, u8 *next_hop, struct mpath_info *pinfo) | |
890 | ||
891 | { | |
892 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
893 | struct mesh_path *mpath; | |
894 | ||
895 | if (sdata->vif.type != IEEE80211_IF_TYPE_MESH_POINT) | |
896 | return -ENOTSUPP; | |
897 | ||
898 | rcu_read_lock(); | |
899 | mpath = mesh_path_lookup(dst, dev); | |
900 | if (!mpath) { | |
901 | rcu_read_unlock(); | |
902 | return -ENOENT; | |
903 | } | |
904 | memcpy(dst, mpath->dst, ETH_ALEN); | |
905 | mpath_set_pinfo(mpath, next_hop, pinfo); | |
906 | rcu_read_unlock(); | |
907 | return 0; | |
908 | } | |
909 | ||
910 | static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev, | |
911 | int idx, u8 *dst, u8 *next_hop, | |
912 | struct mpath_info *pinfo) | |
913 | { | |
914 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
915 | struct mesh_path *mpath; | |
916 | ||
917 | if (sdata->vif.type != IEEE80211_IF_TYPE_MESH_POINT) | |
918 | return -ENOTSUPP; | |
919 | ||
920 | rcu_read_lock(); | |
921 | mpath = mesh_path_lookup_by_idx(idx, dev); | |
922 | if (!mpath) { | |
923 | rcu_read_unlock(); | |
924 | return -ENOENT; | |
925 | } | |
926 | memcpy(dst, mpath->dst, ETH_ALEN); | |
927 | mpath_set_pinfo(mpath, next_hop, pinfo); | |
928 | rcu_read_unlock(); | |
929 | return 0; | |
930 | } | |
931 | #endif | |
932 | ||
f0706e82 JB |
933 | struct cfg80211_ops mac80211_config_ops = { |
934 | .add_virtual_intf = ieee80211_add_iface, | |
935 | .del_virtual_intf = ieee80211_del_iface, | |
42613db7 | 936 | .change_virtual_intf = ieee80211_change_iface, |
e8cbb4cb JB |
937 | .add_key = ieee80211_add_key, |
938 | .del_key = ieee80211_del_key, | |
62da92fb | 939 | .get_key = ieee80211_get_key, |
e8cbb4cb | 940 | .set_default_key = ieee80211_config_default_key, |
5dfdaf58 JB |
941 | .add_beacon = ieee80211_add_beacon, |
942 | .set_beacon = ieee80211_set_beacon, | |
943 | .del_beacon = ieee80211_del_beacon, | |
4fd6931e JB |
944 | .add_station = ieee80211_add_station, |
945 | .del_station = ieee80211_del_station, | |
946 | .change_station = ieee80211_change_station, | |
7bbdd2d9 | 947 | .get_station = ieee80211_get_station, |
c5dd9c2b LCC |
948 | .dump_station = ieee80211_dump_station, |
949 | #ifdef CONFIG_MAC80211_MESH | |
950 | .add_mpath = ieee80211_add_mpath, | |
951 | .del_mpath = ieee80211_del_mpath, | |
952 | .change_mpath = ieee80211_change_mpath, | |
953 | .get_mpath = ieee80211_get_mpath, | |
954 | .dump_mpath = ieee80211_dump_mpath, | |
955 | #endif | |
f0706e82 | 956 | }; |