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Commit | Line | Data |
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55682965 JB |
1 | /* |
2 | * This is the new netlink-based wireless configuration interface. | |
3 | * | |
4 | * Copyright 2006, 2007 Johannes Berg <johannes@sipsolutions.net> | |
5 | */ | |
6 | ||
7 | #include <linux/if.h> | |
8 | #include <linux/module.h> | |
9 | #include <linux/err.h> | |
10 | #include <linux/mutex.h> | |
11 | #include <linux/list.h> | |
12 | #include <linux/if_ether.h> | |
13 | #include <linux/ieee80211.h> | |
14 | #include <linux/nl80211.h> | |
15 | #include <linux/rtnetlink.h> | |
16 | #include <linux/netlink.h> | |
17 | #include <net/genetlink.h> | |
18 | #include <net/cfg80211.h> | |
19 | #include "core.h" | |
20 | #include "nl80211.h" | |
21 | ||
22 | /* the netlink family */ | |
23 | static struct genl_family nl80211_fam = { | |
24 | .id = GENL_ID_GENERATE, /* don't bother with a hardcoded ID */ | |
25 | .name = "nl80211", /* have users key off the name instead */ | |
26 | .hdrsize = 0, /* no private header */ | |
27 | .version = 1, /* no particular meaning now */ | |
28 | .maxattr = NL80211_ATTR_MAX, | |
29 | }; | |
30 | ||
31 | /* internal helper: get drv and dev */ | |
32 | static int get_drv_dev_by_info_ifindex(struct genl_info *info, | |
33 | struct cfg80211_registered_device **drv, | |
34 | struct net_device **dev) | |
35 | { | |
36 | int ifindex; | |
37 | ||
38 | if (!info->attrs[NL80211_ATTR_IFINDEX]) | |
39 | return -EINVAL; | |
40 | ||
41 | ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]); | |
42 | *dev = dev_get_by_index(&init_net, ifindex); | |
43 | if (!*dev) | |
44 | return -ENODEV; | |
45 | ||
46 | *drv = cfg80211_get_dev_from_ifindex(ifindex); | |
47 | if (IS_ERR(*drv)) { | |
48 | dev_put(*dev); | |
49 | return PTR_ERR(*drv); | |
50 | } | |
51 | ||
52 | return 0; | |
53 | } | |
54 | ||
55 | /* policy for the attributes */ | |
56 | static struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] __read_mostly = { | |
57 | [NL80211_ATTR_WIPHY] = { .type = NLA_U32 }, | |
58 | [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING, | |
59 | .len = BUS_ID_SIZE-1 }, | |
60 | ||
61 | [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 }, | |
62 | [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 }, | |
63 | [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 }, | |
41ade00f JB |
64 | |
65 | [NL80211_ATTR_MAC] = { .type = NLA_BINARY, .len = ETH_ALEN }, | |
66 | ||
67 | [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY, | |
68 | .len = WLAN_MAX_KEY_LEN }, | |
69 | [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 }, | |
70 | [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 }, | |
71 | [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG }, | |
ed1b6cc7 JB |
72 | |
73 | [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 }, | |
74 | [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 }, | |
75 | [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY, | |
76 | .len = IEEE80211_MAX_DATA_LEN }, | |
77 | [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY, | |
78 | .len = IEEE80211_MAX_DATA_LEN }, | |
5727ef1b JB |
79 | [NL80211_ATTR_STA_AID] = { .type = NLA_U16 }, |
80 | [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED }, | |
81 | [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 }, | |
82 | [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY, | |
83 | .len = NL80211_MAX_SUPP_RATES }, | |
84 | [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 }, | |
55682965 JB |
85 | }; |
86 | ||
87 | /* message building helper */ | |
88 | static inline void *nl80211hdr_put(struct sk_buff *skb, u32 pid, u32 seq, | |
89 | int flags, u8 cmd) | |
90 | { | |
91 | /* since there is no private header just add the generic one */ | |
92 | return genlmsg_put(skb, pid, seq, &nl80211_fam, flags, cmd); | |
93 | } | |
94 | ||
95 | /* netlink command implementations */ | |
96 | ||
97 | static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags, | |
98 | struct cfg80211_registered_device *dev) | |
99 | { | |
100 | void *hdr; | |
101 | ||
102 | hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_WIPHY); | |
103 | if (!hdr) | |
104 | return -1; | |
105 | ||
106 | NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, dev->idx); | |
107 | NLA_PUT_STRING(msg, NL80211_ATTR_WIPHY_NAME, wiphy_name(&dev->wiphy)); | |
108 | return genlmsg_end(msg, hdr); | |
109 | ||
110 | nla_put_failure: | |
111 | return genlmsg_cancel(msg, hdr); | |
112 | } | |
113 | ||
114 | static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb) | |
115 | { | |
116 | int idx = 0; | |
117 | int start = cb->args[0]; | |
118 | struct cfg80211_registered_device *dev; | |
119 | ||
120 | mutex_lock(&cfg80211_drv_mutex); | |
121 | list_for_each_entry(dev, &cfg80211_drv_list, list) { | |
122 | if (++idx < start) | |
123 | continue; | |
124 | if (nl80211_send_wiphy(skb, NETLINK_CB(cb->skb).pid, | |
125 | cb->nlh->nlmsg_seq, NLM_F_MULTI, | |
126 | dev) < 0) | |
127 | break; | |
128 | } | |
129 | mutex_unlock(&cfg80211_drv_mutex); | |
130 | ||
131 | cb->args[0] = idx; | |
132 | ||
133 | return skb->len; | |
134 | } | |
135 | ||
136 | static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info) | |
137 | { | |
138 | struct sk_buff *msg; | |
139 | struct cfg80211_registered_device *dev; | |
140 | ||
141 | dev = cfg80211_get_dev_from_info(info); | |
142 | if (IS_ERR(dev)) | |
143 | return PTR_ERR(dev); | |
144 | ||
145 | msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); | |
146 | if (!msg) | |
147 | goto out_err; | |
148 | ||
149 | if (nl80211_send_wiphy(msg, info->snd_pid, info->snd_seq, 0, dev) < 0) | |
150 | goto out_free; | |
151 | ||
152 | cfg80211_put_dev(dev); | |
153 | ||
154 | return genlmsg_unicast(msg, info->snd_pid); | |
155 | ||
156 | out_free: | |
157 | nlmsg_free(msg); | |
158 | out_err: | |
159 | cfg80211_put_dev(dev); | |
160 | return -ENOBUFS; | |
161 | } | |
162 | ||
163 | static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info) | |
164 | { | |
165 | struct cfg80211_registered_device *rdev; | |
166 | int result; | |
167 | ||
168 | if (!info->attrs[NL80211_ATTR_WIPHY_NAME]) | |
169 | return -EINVAL; | |
170 | ||
171 | rdev = cfg80211_get_dev_from_info(info); | |
172 | if (IS_ERR(rdev)) | |
173 | return PTR_ERR(rdev); | |
174 | ||
175 | result = cfg80211_dev_rename(rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME])); | |
176 | ||
177 | cfg80211_put_dev(rdev); | |
178 | return result; | |
179 | } | |
180 | ||
181 | ||
182 | static int nl80211_send_iface(struct sk_buff *msg, u32 pid, u32 seq, int flags, | |
183 | struct net_device *dev) | |
184 | { | |
185 | void *hdr; | |
186 | ||
187 | hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_INTERFACE); | |
188 | if (!hdr) | |
189 | return -1; | |
190 | ||
191 | NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex); | |
192 | NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, dev->name); | |
193 | /* TODO: interface type */ | |
194 | return genlmsg_end(msg, hdr); | |
195 | ||
196 | nla_put_failure: | |
197 | return genlmsg_cancel(msg, hdr); | |
198 | } | |
199 | ||
200 | static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb) | |
201 | { | |
202 | int wp_idx = 0; | |
203 | int if_idx = 0; | |
204 | int wp_start = cb->args[0]; | |
205 | int if_start = cb->args[1]; | |
206 | struct cfg80211_registered_device *dev; | |
207 | struct wireless_dev *wdev; | |
208 | ||
209 | mutex_lock(&cfg80211_drv_mutex); | |
210 | list_for_each_entry(dev, &cfg80211_drv_list, list) { | |
211 | if (++wp_idx < wp_start) | |
212 | continue; | |
213 | if_idx = 0; | |
214 | ||
215 | mutex_lock(&dev->devlist_mtx); | |
216 | list_for_each_entry(wdev, &dev->netdev_list, list) { | |
217 | if (++if_idx < if_start) | |
218 | continue; | |
219 | if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).pid, | |
220 | cb->nlh->nlmsg_seq, NLM_F_MULTI, | |
221 | wdev->netdev) < 0) | |
222 | break; | |
223 | } | |
224 | mutex_unlock(&dev->devlist_mtx); | |
225 | } | |
226 | mutex_unlock(&cfg80211_drv_mutex); | |
227 | ||
228 | cb->args[0] = wp_idx; | |
229 | cb->args[1] = if_idx; | |
230 | ||
231 | return skb->len; | |
232 | } | |
233 | ||
234 | static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info) | |
235 | { | |
236 | struct sk_buff *msg; | |
237 | struct cfg80211_registered_device *dev; | |
238 | struct net_device *netdev; | |
239 | int err; | |
240 | ||
241 | err = get_drv_dev_by_info_ifindex(info, &dev, &netdev); | |
242 | if (err) | |
243 | return err; | |
244 | ||
245 | msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); | |
246 | if (!msg) | |
247 | goto out_err; | |
248 | ||
249 | if (nl80211_send_iface(msg, info->snd_pid, info->snd_seq, 0, netdev) < 0) | |
250 | goto out_free; | |
251 | ||
252 | dev_put(netdev); | |
253 | cfg80211_put_dev(dev); | |
254 | ||
255 | return genlmsg_unicast(msg, info->snd_pid); | |
256 | ||
257 | out_free: | |
258 | nlmsg_free(msg); | |
259 | out_err: | |
260 | dev_put(netdev); | |
261 | cfg80211_put_dev(dev); | |
262 | return -ENOBUFS; | |
263 | } | |
264 | ||
265 | static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info) | |
266 | { | |
267 | struct cfg80211_registered_device *drv; | |
268 | int err, ifindex; | |
269 | enum nl80211_iftype type; | |
270 | struct net_device *dev; | |
271 | ||
272 | if (info->attrs[NL80211_ATTR_IFTYPE]) { | |
273 | type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]); | |
274 | if (type > NL80211_IFTYPE_MAX) | |
275 | return -EINVAL; | |
276 | } else | |
277 | return -EINVAL; | |
278 | ||
279 | err = get_drv_dev_by_info_ifindex(info, &drv, &dev); | |
280 | if (err) | |
281 | return err; | |
282 | ifindex = dev->ifindex; | |
283 | dev_put(dev); | |
284 | ||
285 | if (!drv->ops->change_virtual_intf) { | |
286 | err = -EOPNOTSUPP; | |
287 | goto unlock; | |
288 | } | |
289 | ||
290 | rtnl_lock(); | |
291 | err = drv->ops->change_virtual_intf(&drv->wiphy, ifindex, type); | |
292 | rtnl_unlock(); | |
293 | ||
294 | unlock: | |
295 | cfg80211_put_dev(drv); | |
296 | return err; | |
297 | } | |
298 | ||
299 | static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info) | |
300 | { | |
301 | struct cfg80211_registered_device *drv; | |
302 | int err; | |
303 | enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED; | |
304 | ||
305 | if (!info->attrs[NL80211_ATTR_IFNAME]) | |
306 | return -EINVAL; | |
307 | ||
308 | if (info->attrs[NL80211_ATTR_IFTYPE]) { | |
309 | type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]); | |
310 | if (type > NL80211_IFTYPE_MAX) | |
311 | return -EINVAL; | |
312 | } | |
313 | ||
314 | drv = cfg80211_get_dev_from_info(info); | |
315 | if (IS_ERR(drv)) | |
316 | return PTR_ERR(drv); | |
317 | ||
318 | if (!drv->ops->add_virtual_intf) { | |
319 | err = -EOPNOTSUPP; | |
320 | goto unlock; | |
321 | } | |
322 | ||
323 | rtnl_lock(); | |
324 | err = drv->ops->add_virtual_intf(&drv->wiphy, | |
325 | nla_data(info->attrs[NL80211_ATTR_IFNAME]), type); | |
326 | rtnl_unlock(); | |
327 | ||
328 | unlock: | |
329 | cfg80211_put_dev(drv); | |
330 | return err; | |
331 | } | |
332 | ||
333 | static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info) | |
334 | { | |
335 | struct cfg80211_registered_device *drv; | |
336 | int ifindex, err; | |
337 | struct net_device *dev; | |
338 | ||
339 | err = get_drv_dev_by_info_ifindex(info, &drv, &dev); | |
340 | if (err) | |
341 | return err; | |
342 | ifindex = dev->ifindex; | |
343 | dev_put(dev); | |
344 | ||
345 | if (!drv->ops->del_virtual_intf) { | |
346 | err = -EOPNOTSUPP; | |
347 | goto out; | |
348 | } | |
349 | ||
350 | rtnl_lock(); | |
351 | err = drv->ops->del_virtual_intf(&drv->wiphy, ifindex); | |
352 | rtnl_unlock(); | |
353 | ||
354 | out: | |
355 | cfg80211_put_dev(drv); | |
356 | return err; | |
357 | } | |
358 | ||
41ade00f JB |
359 | struct get_key_cookie { |
360 | struct sk_buff *msg; | |
361 | int error; | |
362 | }; | |
363 | ||
364 | static void get_key_callback(void *c, struct key_params *params) | |
365 | { | |
366 | struct get_key_cookie *cookie = c; | |
367 | ||
368 | if (params->key) | |
369 | NLA_PUT(cookie->msg, NL80211_ATTR_KEY_DATA, | |
370 | params->key_len, params->key); | |
371 | ||
372 | if (params->seq) | |
373 | NLA_PUT(cookie->msg, NL80211_ATTR_KEY_SEQ, | |
374 | params->seq_len, params->seq); | |
375 | ||
376 | if (params->cipher) | |
377 | NLA_PUT_U32(cookie->msg, NL80211_ATTR_KEY_CIPHER, | |
378 | params->cipher); | |
379 | ||
380 | return; | |
381 | nla_put_failure: | |
382 | cookie->error = 1; | |
383 | } | |
384 | ||
385 | static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info) | |
386 | { | |
387 | struct cfg80211_registered_device *drv; | |
388 | int err; | |
389 | struct net_device *dev; | |
390 | u8 key_idx = 0; | |
391 | u8 *mac_addr = NULL; | |
392 | struct get_key_cookie cookie = { | |
393 | .error = 0, | |
394 | }; | |
395 | void *hdr; | |
396 | struct sk_buff *msg; | |
397 | ||
398 | if (info->attrs[NL80211_ATTR_KEY_IDX]) | |
399 | key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]); | |
400 | ||
401 | if (key_idx > 3) | |
402 | return -EINVAL; | |
403 | ||
404 | if (info->attrs[NL80211_ATTR_MAC]) | |
405 | mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); | |
406 | ||
407 | err = get_drv_dev_by_info_ifindex(info, &drv, &dev); | |
408 | if (err) | |
409 | return err; | |
410 | ||
411 | if (!drv->ops->get_key) { | |
412 | err = -EOPNOTSUPP; | |
413 | goto out; | |
414 | } | |
415 | ||
416 | msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); | |
417 | if (!msg) { | |
418 | err = -ENOMEM; | |
419 | goto out; | |
420 | } | |
421 | ||
422 | hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0, | |
423 | NL80211_CMD_NEW_KEY); | |
424 | ||
425 | if (IS_ERR(hdr)) { | |
426 | err = PTR_ERR(hdr); | |
427 | goto out; | |
428 | } | |
429 | ||
430 | cookie.msg = msg; | |
431 | ||
432 | NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex); | |
433 | NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx); | |
434 | if (mac_addr) | |
435 | NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr); | |
436 | ||
437 | rtnl_lock(); | |
438 | err = drv->ops->get_key(&drv->wiphy, dev, key_idx, mac_addr, | |
439 | &cookie, get_key_callback); | |
440 | rtnl_unlock(); | |
441 | ||
442 | if (err) | |
443 | goto out; | |
444 | ||
445 | if (cookie.error) | |
446 | goto nla_put_failure; | |
447 | ||
448 | genlmsg_end(msg, hdr); | |
449 | err = genlmsg_unicast(msg, info->snd_pid); | |
450 | goto out; | |
451 | ||
452 | nla_put_failure: | |
453 | err = -ENOBUFS; | |
454 | nlmsg_free(msg); | |
455 | out: | |
456 | cfg80211_put_dev(drv); | |
457 | dev_put(dev); | |
458 | return err; | |
459 | } | |
460 | ||
461 | static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info) | |
462 | { | |
463 | struct cfg80211_registered_device *drv; | |
464 | int err; | |
465 | struct net_device *dev; | |
466 | u8 key_idx; | |
467 | ||
468 | if (!info->attrs[NL80211_ATTR_KEY_IDX]) | |
469 | return -EINVAL; | |
470 | ||
471 | key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]); | |
472 | ||
473 | if (key_idx > 3) | |
474 | return -EINVAL; | |
475 | ||
476 | /* currently only support setting default key */ | |
477 | if (!info->attrs[NL80211_ATTR_KEY_DEFAULT]) | |
478 | return -EINVAL; | |
479 | ||
480 | err = get_drv_dev_by_info_ifindex(info, &drv, &dev); | |
481 | if (err) | |
482 | return err; | |
483 | ||
484 | if (!drv->ops->set_default_key) { | |
485 | err = -EOPNOTSUPP; | |
486 | goto out; | |
487 | } | |
488 | ||
489 | rtnl_lock(); | |
490 | err = drv->ops->set_default_key(&drv->wiphy, dev, key_idx); | |
491 | rtnl_unlock(); | |
492 | ||
493 | out: | |
494 | cfg80211_put_dev(drv); | |
495 | dev_put(dev); | |
496 | return err; | |
497 | } | |
498 | ||
499 | static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info) | |
500 | { | |
501 | struct cfg80211_registered_device *drv; | |
502 | int err; | |
503 | struct net_device *dev; | |
504 | struct key_params params; | |
505 | u8 key_idx = 0; | |
506 | u8 *mac_addr = NULL; | |
507 | ||
508 | memset(¶ms, 0, sizeof(params)); | |
509 | ||
510 | if (!info->attrs[NL80211_ATTR_KEY_CIPHER]) | |
511 | return -EINVAL; | |
512 | ||
513 | if (info->attrs[NL80211_ATTR_KEY_DATA]) { | |
514 | params.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]); | |
515 | params.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]); | |
516 | } | |
517 | ||
518 | if (info->attrs[NL80211_ATTR_KEY_IDX]) | |
519 | key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]); | |
520 | ||
521 | params.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]); | |
522 | ||
523 | if (info->attrs[NL80211_ATTR_MAC]) | |
524 | mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); | |
525 | ||
526 | if (key_idx > 3) | |
527 | return -EINVAL; | |
528 | ||
529 | /* | |
530 | * Disallow pairwise keys with non-zero index unless it's WEP | |
531 | * (because current deployments use pairwise WEP keys with | |
532 | * non-zero indizes but 802.11i clearly specifies to use zero) | |
533 | */ | |
534 | if (mac_addr && key_idx && | |
535 | params.cipher != WLAN_CIPHER_SUITE_WEP40 && | |
536 | params.cipher != WLAN_CIPHER_SUITE_WEP104) | |
537 | return -EINVAL; | |
538 | ||
539 | /* TODO: add definitions for the lengths to linux/ieee80211.h */ | |
540 | switch (params.cipher) { | |
541 | case WLAN_CIPHER_SUITE_WEP40: | |
542 | if (params.key_len != 5) | |
543 | return -EINVAL; | |
544 | break; | |
545 | case WLAN_CIPHER_SUITE_TKIP: | |
546 | if (params.key_len != 32) | |
547 | return -EINVAL; | |
548 | break; | |
549 | case WLAN_CIPHER_SUITE_CCMP: | |
550 | if (params.key_len != 16) | |
551 | return -EINVAL; | |
552 | break; | |
553 | case WLAN_CIPHER_SUITE_WEP104: | |
554 | if (params.key_len != 13) | |
555 | return -EINVAL; | |
556 | break; | |
557 | default: | |
558 | return -EINVAL; | |
559 | } | |
560 | ||
561 | err = get_drv_dev_by_info_ifindex(info, &drv, &dev); | |
562 | if (err) | |
563 | return err; | |
564 | ||
565 | if (!drv->ops->add_key) { | |
566 | err = -EOPNOTSUPP; | |
567 | goto out; | |
568 | } | |
569 | ||
570 | rtnl_lock(); | |
571 | err = drv->ops->add_key(&drv->wiphy, dev, key_idx, mac_addr, ¶ms); | |
572 | rtnl_unlock(); | |
573 | ||
574 | out: | |
575 | cfg80211_put_dev(drv); | |
576 | dev_put(dev); | |
577 | return err; | |
578 | } | |
579 | ||
580 | static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info) | |
581 | { | |
582 | struct cfg80211_registered_device *drv; | |
583 | int err; | |
584 | struct net_device *dev; | |
585 | u8 key_idx = 0; | |
586 | u8 *mac_addr = NULL; | |
587 | ||
588 | if (info->attrs[NL80211_ATTR_KEY_IDX]) | |
589 | key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]); | |
590 | ||
591 | if (key_idx > 3) | |
592 | return -EINVAL; | |
593 | ||
594 | if (info->attrs[NL80211_ATTR_MAC]) | |
595 | mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); | |
596 | ||
597 | err = get_drv_dev_by_info_ifindex(info, &drv, &dev); | |
598 | if (err) | |
599 | return err; | |
600 | ||
601 | if (!drv->ops->del_key) { | |
602 | err = -EOPNOTSUPP; | |
603 | goto out; | |
604 | } | |
605 | ||
606 | rtnl_lock(); | |
607 | err = drv->ops->del_key(&drv->wiphy, dev, key_idx, mac_addr); | |
608 | rtnl_unlock(); | |
609 | ||
610 | out: | |
611 | cfg80211_put_dev(drv); | |
612 | dev_put(dev); | |
613 | return err; | |
614 | } | |
615 | ||
ed1b6cc7 JB |
616 | static int nl80211_addset_beacon(struct sk_buff *skb, struct genl_info *info) |
617 | { | |
618 | int (*call)(struct wiphy *wiphy, struct net_device *dev, | |
619 | struct beacon_parameters *info); | |
620 | struct cfg80211_registered_device *drv; | |
621 | int err; | |
622 | struct net_device *dev; | |
623 | struct beacon_parameters params; | |
624 | int haveinfo = 0; | |
625 | ||
626 | err = get_drv_dev_by_info_ifindex(info, &drv, &dev); | |
627 | if (err) | |
628 | return err; | |
629 | ||
630 | switch (info->genlhdr->cmd) { | |
631 | case NL80211_CMD_NEW_BEACON: | |
632 | /* these are required for NEW_BEACON */ | |
633 | if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] || | |
634 | !info->attrs[NL80211_ATTR_DTIM_PERIOD] || | |
635 | !info->attrs[NL80211_ATTR_BEACON_HEAD]) { | |
636 | err = -EINVAL; | |
637 | goto out; | |
638 | } | |
639 | ||
640 | call = drv->ops->add_beacon; | |
641 | break; | |
642 | case NL80211_CMD_SET_BEACON: | |
643 | call = drv->ops->set_beacon; | |
644 | break; | |
645 | default: | |
646 | WARN_ON(1); | |
647 | err = -EOPNOTSUPP; | |
648 | goto out; | |
649 | } | |
650 | ||
651 | if (!call) { | |
652 | err = -EOPNOTSUPP; | |
653 | goto out; | |
654 | } | |
655 | ||
656 | memset(¶ms, 0, sizeof(params)); | |
657 | ||
658 | if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) { | |
659 | params.interval = | |
660 | nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]); | |
661 | haveinfo = 1; | |
662 | } | |
663 | ||
664 | if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) { | |
665 | params.dtim_period = | |
666 | nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]); | |
667 | haveinfo = 1; | |
668 | } | |
669 | ||
670 | if (info->attrs[NL80211_ATTR_BEACON_HEAD]) { | |
671 | params.head = nla_data(info->attrs[NL80211_ATTR_BEACON_HEAD]); | |
672 | params.head_len = | |
673 | nla_len(info->attrs[NL80211_ATTR_BEACON_HEAD]); | |
674 | haveinfo = 1; | |
675 | } | |
676 | ||
677 | if (info->attrs[NL80211_ATTR_BEACON_TAIL]) { | |
678 | params.tail = nla_data(info->attrs[NL80211_ATTR_BEACON_TAIL]); | |
679 | params.tail_len = | |
680 | nla_len(info->attrs[NL80211_ATTR_BEACON_TAIL]); | |
681 | haveinfo = 1; | |
682 | } | |
683 | ||
684 | if (!haveinfo) { | |
685 | err = -EINVAL; | |
686 | goto out; | |
687 | } | |
688 | ||
689 | rtnl_lock(); | |
690 | err = call(&drv->wiphy, dev, ¶ms); | |
691 | rtnl_unlock(); | |
692 | ||
693 | out: | |
694 | cfg80211_put_dev(drv); | |
695 | dev_put(dev); | |
696 | return err; | |
697 | } | |
698 | ||
699 | static int nl80211_del_beacon(struct sk_buff *skb, struct genl_info *info) | |
700 | { | |
701 | struct cfg80211_registered_device *drv; | |
702 | int err; | |
703 | struct net_device *dev; | |
704 | ||
705 | err = get_drv_dev_by_info_ifindex(info, &drv, &dev); | |
706 | if (err) | |
707 | return err; | |
708 | ||
709 | if (!drv->ops->del_beacon) { | |
710 | err = -EOPNOTSUPP; | |
711 | goto out; | |
712 | } | |
713 | ||
714 | rtnl_lock(); | |
715 | err = drv->ops->del_beacon(&drv->wiphy, dev); | |
716 | rtnl_unlock(); | |
717 | ||
718 | out: | |
719 | cfg80211_put_dev(drv); | |
720 | dev_put(dev); | |
721 | return err; | |
722 | } | |
723 | ||
5727ef1b JB |
724 | static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = { |
725 | [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG }, | |
726 | [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG }, | |
727 | [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG }, | |
728 | }; | |
729 | ||
730 | static int parse_station_flags(struct nlattr *nla, u32 *staflags) | |
731 | { | |
732 | struct nlattr *flags[NL80211_STA_FLAG_MAX + 1]; | |
733 | int flag; | |
734 | ||
735 | *staflags = 0; | |
736 | ||
737 | if (!nla) | |
738 | return 0; | |
739 | ||
740 | if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX, | |
741 | nla, sta_flags_policy)) | |
742 | return -EINVAL; | |
743 | ||
744 | *staflags = STATION_FLAG_CHANGED; | |
745 | ||
746 | for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) | |
747 | if (flags[flag]) | |
748 | *staflags |= (1<<flag); | |
749 | ||
750 | return 0; | |
751 | } | |
752 | ||
fd5b74dc JB |
753 | static int nl80211_send_station(struct sk_buff *msg, u32 pid, u32 seq, |
754 | int flags, struct net_device *dev, | |
755 | u8 *mac_addr, struct station_stats *stats) | |
756 | { | |
757 | void *hdr; | |
758 | struct nlattr *statsattr; | |
759 | ||
760 | hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION); | |
761 | if (!hdr) | |
762 | return -1; | |
763 | ||
764 | NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex); | |
765 | NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr); | |
766 | ||
767 | statsattr = nla_nest_start(msg, NL80211_ATTR_STA_STATS); | |
768 | if (!statsattr) | |
769 | goto nla_put_failure; | |
770 | if (stats->filled & STATION_STAT_INACTIVE_TIME) | |
771 | NLA_PUT_U32(msg, NL80211_STA_STAT_INACTIVE_TIME, | |
772 | stats->inactive_time); | |
773 | if (stats->filled & STATION_STAT_RX_BYTES) | |
774 | NLA_PUT_U32(msg, NL80211_STA_STAT_RX_BYTES, | |
775 | stats->rx_bytes); | |
776 | if (stats->filled & STATION_STAT_TX_BYTES) | |
777 | NLA_PUT_U32(msg, NL80211_STA_STAT_TX_BYTES, | |
778 | stats->tx_bytes); | |
779 | ||
780 | nla_nest_end(msg, statsattr); | |
781 | ||
782 | return genlmsg_end(msg, hdr); | |
783 | ||
784 | nla_put_failure: | |
785 | return genlmsg_cancel(msg, hdr); | |
786 | } | |
787 | ||
788 | ||
5727ef1b JB |
789 | static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info) |
790 | { | |
fd5b74dc JB |
791 | struct cfg80211_registered_device *drv; |
792 | int err; | |
793 | struct net_device *dev; | |
794 | struct station_stats stats; | |
795 | struct sk_buff *msg; | |
796 | u8 *mac_addr = NULL; | |
797 | ||
798 | memset(&stats, 0, sizeof(stats)); | |
799 | ||
800 | if (!info->attrs[NL80211_ATTR_MAC]) | |
801 | return -EINVAL; | |
802 | ||
803 | mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); | |
804 | ||
805 | err = get_drv_dev_by_info_ifindex(info, &drv, &dev); | |
806 | if (err) | |
807 | return err; | |
808 | ||
809 | if (!drv->ops->get_station) { | |
810 | err = -EOPNOTSUPP; | |
811 | goto out; | |
812 | } | |
813 | ||
814 | rtnl_lock(); | |
815 | err = drv->ops->get_station(&drv->wiphy, dev, mac_addr, &stats); | |
816 | rtnl_unlock(); | |
817 | ||
818 | msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); | |
819 | if (!msg) | |
820 | goto out; | |
821 | ||
822 | if (nl80211_send_station(msg, info->snd_pid, info->snd_seq, 0, | |
823 | dev, mac_addr, &stats) < 0) | |
824 | goto out_free; | |
825 | ||
826 | err = genlmsg_unicast(msg, info->snd_pid); | |
827 | goto out; | |
828 | ||
829 | out_free: | |
830 | nlmsg_free(msg); | |
831 | ||
832 | out: | |
833 | cfg80211_put_dev(drv); | |
834 | dev_put(dev); | |
835 | return err; | |
5727ef1b JB |
836 | } |
837 | ||
838 | /* | |
839 | * Get vlan interface making sure it is on the right wiphy. | |
840 | */ | |
841 | static int get_vlan(struct nlattr *vlanattr, | |
842 | struct cfg80211_registered_device *rdev, | |
843 | struct net_device **vlan) | |
844 | { | |
845 | *vlan = NULL; | |
846 | ||
847 | if (vlanattr) { | |
848 | *vlan = dev_get_by_index(&init_net, nla_get_u32(vlanattr)); | |
849 | if (!*vlan) | |
850 | return -ENODEV; | |
851 | if (!(*vlan)->ieee80211_ptr) | |
852 | return -EINVAL; | |
853 | if ((*vlan)->ieee80211_ptr->wiphy != &rdev->wiphy) | |
854 | return -EINVAL; | |
855 | } | |
856 | return 0; | |
857 | } | |
858 | ||
859 | static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info) | |
860 | { | |
861 | struct cfg80211_registered_device *drv; | |
862 | int err; | |
863 | struct net_device *dev; | |
864 | struct station_parameters params; | |
865 | u8 *mac_addr = NULL; | |
866 | ||
867 | memset(¶ms, 0, sizeof(params)); | |
868 | ||
869 | params.listen_interval = -1; | |
870 | ||
871 | if (info->attrs[NL80211_ATTR_STA_AID]) | |
872 | return -EINVAL; | |
873 | ||
874 | if (!info->attrs[NL80211_ATTR_MAC]) | |
875 | return -EINVAL; | |
876 | ||
877 | mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); | |
878 | ||
879 | if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) { | |
880 | params.supported_rates = | |
881 | nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); | |
882 | params.supported_rates_len = | |
883 | nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); | |
884 | } | |
885 | ||
886 | if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]) | |
887 | params.listen_interval = | |
888 | nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]); | |
889 | ||
890 | if (parse_station_flags(info->attrs[NL80211_ATTR_STA_FLAGS], | |
891 | ¶ms.station_flags)) | |
892 | return -EINVAL; | |
893 | ||
894 | err = get_drv_dev_by_info_ifindex(info, &drv, &dev); | |
895 | if (err) | |
896 | return err; | |
897 | ||
898 | err = get_vlan(info->attrs[NL80211_ATTR_STA_VLAN], drv, ¶ms.vlan); | |
899 | if (err) | |
900 | goto out; | |
901 | ||
902 | if (!drv->ops->change_station) { | |
903 | err = -EOPNOTSUPP; | |
904 | goto out; | |
905 | } | |
906 | ||
907 | rtnl_lock(); | |
908 | err = drv->ops->change_station(&drv->wiphy, dev, mac_addr, ¶ms); | |
909 | rtnl_unlock(); | |
910 | ||
911 | out: | |
912 | if (params.vlan) | |
913 | dev_put(params.vlan); | |
914 | cfg80211_put_dev(drv); | |
915 | dev_put(dev); | |
916 | return err; | |
917 | } | |
918 | ||
919 | static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info) | |
920 | { | |
921 | struct cfg80211_registered_device *drv; | |
922 | int err; | |
923 | struct net_device *dev; | |
924 | struct station_parameters params; | |
925 | u8 *mac_addr = NULL; | |
926 | ||
927 | memset(¶ms, 0, sizeof(params)); | |
928 | ||
929 | if (!info->attrs[NL80211_ATTR_MAC]) | |
930 | return -EINVAL; | |
931 | ||
932 | if (!info->attrs[NL80211_ATTR_STA_AID]) | |
933 | return -EINVAL; | |
934 | ||
935 | if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]) | |
936 | return -EINVAL; | |
937 | ||
938 | if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) | |
939 | return -EINVAL; | |
940 | ||
941 | mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); | |
942 | params.supported_rates = | |
943 | nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); | |
944 | params.supported_rates_len = | |
945 | nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); | |
946 | params.listen_interval = | |
947 | nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]); | |
948 | params.listen_interval = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]); | |
949 | ||
950 | if (parse_station_flags(info->attrs[NL80211_ATTR_STA_FLAGS], | |
951 | ¶ms.station_flags)) | |
952 | return -EINVAL; | |
953 | ||
954 | err = get_drv_dev_by_info_ifindex(info, &drv, &dev); | |
955 | if (err) | |
956 | return err; | |
957 | ||
958 | err = get_vlan(info->attrs[NL80211_ATTR_STA_VLAN], drv, ¶ms.vlan); | |
959 | if (err) | |
960 | goto out; | |
961 | ||
962 | if (!drv->ops->add_station) { | |
963 | err = -EOPNOTSUPP; | |
964 | goto out; | |
965 | } | |
966 | ||
967 | rtnl_lock(); | |
968 | err = drv->ops->add_station(&drv->wiphy, dev, mac_addr, ¶ms); | |
969 | rtnl_unlock(); | |
970 | ||
971 | out: | |
972 | if (params.vlan) | |
973 | dev_put(params.vlan); | |
974 | cfg80211_put_dev(drv); | |
975 | dev_put(dev); | |
976 | return err; | |
977 | } | |
978 | ||
979 | static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info) | |
980 | { | |
981 | struct cfg80211_registered_device *drv; | |
982 | int err; | |
983 | struct net_device *dev; | |
984 | u8 *mac_addr = NULL; | |
985 | ||
986 | if (info->attrs[NL80211_ATTR_MAC]) | |
987 | mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); | |
988 | ||
989 | err = get_drv_dev_by_info_ifindex(info, &drv, &dev); | |
990 | if (err) | |
991 | return err; | |
992 | ||
993 | if (!drv->ops->del_station) { | |
994 | err = -EOPNOTSUPP; | |
995 | goto out; | |
996 | } | |
997 | ||
998 | rtnl_lock(); | |
999 | err = drv->ops->del_station(&drv->wiphy, dev, mac_addr); | |
1000 | rtnl_unlock(); | |
1001 | ||
1002 | out: | |
1003 | cfg80211_put_dev(drv); | |
1004 | dev_put(dev); | |
1005 | return err; | |
1006 | } | |
1007 | ||
55682965 JB |
1008 | static struct genl_ops nl80211_ops[] = { |
1009 | { | |
1010 | .cmd = NL80211_CMD_GET_WIPHY, | |
1011 | .doit = nl80211_get_wiphy, | |
1012 | .dumpit = nl80211_dump_wiphy, | |
1013 | .policy = nl80211_policy, | |
1014 | /* can be retrieved by unprivileged users */ | |
1015 | }, | |
1016 | { | |
1017 | .cmd = NL80211_CMD_SET_WIPHY, | |
1018 | .doit = nl80211_set_wiphy, | |
1019 | .policy = nl80211_policy, | |
1020 | .flags = GENL_ADMIN_PERM, | |
1021 | }, | |
1022 | { | |
1023 | .cmd = NL80211_CMD_GET_INTERFACE, | |
1024 | .doit = nl80211_get_interface, | |
1025 | .dumpit = nl80211_dump_interface, | |
1026 | .policy = nl80211_policy, | |
1027 | /* can be retrieved by unprivileged users */ | |
1028 | }, | |
1029 | { | |
1030 | .cmd = NL80211_CMD_SET_INTERFACE, | |
1031 | .doit = nl80211_set_interface, | |
1032 | .policy = nl80211_policy, | |
1033 | .flags = GENL_ADMIN_PERM, | |
1034 | }, | |
1035 | { | |
1036 | .cmd = NL80211_CMD_NEW_INTERFACE, | |
1037 | .doit = nl80211_new_interface, | |
1038 | .policy = nl80211_policy, | |
1039 | .flags = GENL_ADMIN_PERM, | |
1040 | }, | |
1041 | { | |
1042 | .cmd = NL80211_CMD_DEL_INTERFACE, | |
1043 | .doit = nl80211_del_interface, | |
1044 | .policy = nl80211_policy, | |
41ade00f JB |
1045 | .flags = GENL_ADMIN_PERM, |
1046 | }, | |
1047 | { | |
1048 | .cmd = NL80211_CMD_GET_KEY, | |
1049 | .doit = nl80211_get_key, | |
1050 | .policy = nl80211_policy, | |
1051 | .flags = GENL_ADMIN_PERM, | |
1052 | }, | |
1053 | { | |
1054 | .cmd = NL80211_CMD_SET_KEY, | |
1055 | .doit = nl80211_set_key, | |
1056 | .policy = nl80211_policy, | |
1057 | .flags = GENL_ADMIN_PERM, | |
1058 | }, | |
1059 | { | |
1060 | .cmd = NL80211_CMD_NEW_KEY, | |
1061 | .doit = nl80211_new_key, | |
1062 | .policy = nl80211_policy, | |
1063 | .flags = GENL_ADMIN_PERM, | |
1064 | }, | |
1065 | { | |
1066 | .cmd = NL80211_CMD_DEL_KEY, | |
1067 | .doit = nl80211_del_key, | |
1068 | .policy = nl80211_policy, | |
55682965 JB |
1069 | .flags = GENL_ADMIN_PERM, |
1070 | }, | |
ed1b6cc7 JB |
1071 | { |
1072 | .cmd = NL80211_CMD_SET_BEACON, | |
1073 | .policy = nl80211_policy, | |
1074 | .flags = GENL_ADMIN_PERM, | |
1075 | .doit = nl80211_addset_beacon, | |
1076 | }, | |
1077 | { | |
1078 | .cmd = NL80211_CMD_NEW_BEACON, | |
1079 | .policy = nl80211_policy, | |
1080 | .flags = GENL_ADMIN_PERM, | |
1081 | .doit = nl80211_addset_beacon, | |
1082 | }, | |
1083 | { | |
1084 | .cmd = NL80211_CMD_DEL_BEACON, | |
1085 | .policy = nl80211_policy, | |
1086 | .flags = GENL_ADMIN_PERM, | |
1087 | .doit = nl80211_del_beacon, | |
1088 | }, | |
5727ef1b JB |
1089 | { |
1090 | .cmd = NL80211_CMD_GET_STATION, | |
1091 | .doit = nl80211_get_station, | |
1092 | /* TODO: implement dumpit */ | |
1093 | .policy = nl80211_policy, | |
1094 | .flags = GENL_ADMIN_PERM, | |
1095 | }, | |
1096 | { | |
1097 | .cmd = NL80211_CMD_SET_STATION, | |
1098 | .doit = nl80211_set_station, | |
1099 | .policy = nl80211_policy, | |
1100 | .flags = GENL_ADMIN_PERM, | |
1101 | }, | |
1102 | { | |
1103 | .cmd = NL80211_CMD_NEW_STATION, | |
1104 | .doit = nl80211_new_station, | |
1105 | .policy = nl80211_policy, | |
1106 | .flags = GENL_ADMIN_PERM, | |
1107 | }, | |
1108 | { | |
1109 | .cmd = NL80211_CMD_DEL_STATION, | |
1110 | .doit = nl80211_del_station, | |
1111 | .policy = nl80211_policy, | |
1112 | .flags = GENL_ADMIN_PERM, | |
1113 | }, | |
55682965 JB |
1114 | }; |
1115 | ||
1116 | /* multicast groups */ | |
1117 | static struct genl_multicast_group nl80211_config_mcgrp = { | |
1118 | .name = "config", | |
1119 | }; | |
1120 | ||
1121 | /* notification functions */ | |
1122 | ||
1123 | void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev) | |
1124 | { | |
1125 | struct sk_buff *msg; | |
1126 | ||
1127 | msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); | |
1128 | if (!msg) | |
1129 | return; | |
1130 | ||
1131 | if (nl80211_send_wiphy(msg, 0, 0, 0, rdev) < 0) { | |
1132 | nlmsg_free(msg); | |
1133 | return; | |
1134 | } | |
1135 | ||
1136 | genlmsg_multicast(msg, 0, nl80211_config_mcgrp.id, GFP_KERNEL); | |
1137 | } | |
1138 | ||
1139 | /* initialisation/exit functions */ | |
1140 | ||
1141 | int nl80211_init(void) | |
1142 | { | |
1143 | int err, i; | |
1144 | ||
1145 | err = genl_register_family(&nl80211_fam); | |
1146 | if (err) | |
1147 | return err; | |
1148 | ||
1149 | for (i = 0; i < ARRAY_SIZE(nl80211_ops); i++) { | |
1150 | err = genl_register_ops(&nl80211_fam, &nl80211_ops[i]); | |
1151 | if (err) | |
1152 | goto err_out; | |
1153 | } | |
1154 | ||
1155 | err = genl_register_mc_group(&nl80211_fam, &nl80211_config_mcgrp); | |
1156 | if (err) | |
1157 | goto err_out; | |
1158 | ||
1159 | return 0; | |
1160 | err_out: | |
1161 | genl_unregister_family(&nl80211_fam); | |
1162 | return err; | |
1163 | } | |
1164 | ||
1165 | void nl80211_exit(void) | |
1166 | { | |
1167 | genl_unregister_family(&nl80211_fam); | |
1168 | } |