Commit | Line | Data |
---|---|---|
704232c2 JB |
1 | /* |
2 | * This is the linux wireless configuration interface. | |
3 | * | |
5f2aa25e | 4 | * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net> |
704232c2 JB |
5 | */ |
6 | ||
e9c0268f JP |
7 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
8 | ||
704232c2 JB |
9 | #include <linux/if.h> |
10 | #include <linux/module.h> | |
11 | #include <linux/err.h> | |
704232c2 | 12 | #include <linux/list.h> |
5a0e3ad6 | 13 | #include <linux/slab.h> |
704232c2 JB |
14 | #include <linux/nl80211.h> |
15 | #include <linux/debugfs.h> | |
16 | #include <linux/notifier.h> | |
17 | #include <linux/device.h> | |
16a832e7 | 18 | #include <linux/etherdevice.h> |
1f87f7d3 | 19 | #include <linux/rtnetlink.h> |
d43c36dc | 20 | #include <linux/sched.h> |
704232c2 JB |
21 | #include <net/genetlink.h> |
22 | #include <net/cfg80211.h> | |
55682965 | 23 | #include "nl80211.h" |
704232c2 JB |
24 | #include "core.h" |
25 | #include "sysfs.h" | |
1ac61302 | 26 | #include "debugfs.h" |
a9a11622 | 27 | #include "wext-compat.h" |
4890e3be | 28 | #include "ethtool.h" |
704232c2 JB |
29 | |
30 | /* name for sysfs, %d is appended */ | |
31 | #define PHY_NAME "phy" | |
32 | ||
33 | MODULE_AUTHOR("Johannes Berg"); | |
34 | MODULE_LICENSE("GPL"); | |
35 | MODULE_DESCRIPTION("wireless configuration support"); | |
36 | ||
5f2aa25e | 37 | /* RCU-protected (and cfg80211_mutex for writers) */ |
79c97e97 | 38 | LIST_HEAD(cfg80211_rdev_list); |
f5ea9120 | 39 | int cfg80211_rdev_list_generation; |
a1794390 | 40 | |
a1794390 | 41 | DEFINE_MUTEX(cfg80211_mutex); |
704232c2 JB |
42 | |
43 | /* for debugfs */ | |
44 | static struct dentry *ieee80211_debugfs_dir; | |
45 | ||
e60d7443 AB |
46 | /* for the cleanup, scan and event works */ |
47 | struct workqueue_struct *cfg80211_wq; | |
48 | ||
40db6c77 AK |
49 | static bool cfg80211_disable_40mhz_24ghz; |
50 | module_param(cfg80211_disable_40mhz_24ghz, bool, 0644); | |
51 | MODULE_PARM_DESC(cfg80211_disable_40mhz_24ghz, | |
52 | "Disable 40MHz support in the 2.4GHz band"); | |
53 | ||
806a9e39 | 54 | /* requires cfg80211_mutex to be held! */ |
79c97e97 | 55 | struct cfg80211_registered_device *cfg80211_rdev_by_wiphy_idx(int wiphy_idx) |
55682965 | 56 | { |
79c97e97 | 57 | struct cfg80211_registered_device *result = NULL, *rdev; |
55682965 | 58 | |
85fd129a LR |
59 | if (!wiphy_idx_valid(wiphy_idx)) |
60 | return NULL; | |
61 | ||
761cf7ec LR |
62 | assert_cfg80211_lock(); |
63 | ||
79c97e97 JB |
64 | list_for_each_entry(rdev, &cfg80211_rdev_list, list) { |
65 | if (rdev->wiphy_idx == wiphy_idx) { | |
66 | result = rdev; | |
55682965 JB |
67 | break; |
68 | } | |
69 | } | |
70 | ||
71 | return result; | |
72 | } | |
73 | ||
806a9e39 LR |
74 | int get_wiphy_idx(struct wiphy *wiphy) |
75 | { | |
79c97e97 | 76 | struct cfg80211_registered_device *rdev; |
806a9e39 LR |
77 | if (!wiphy) |
78 | return WIPHY_IDX_STALE; | |
79c97e97 JB |
79 | rdev = wiphy_to_dev(wiphy); |
80 | return rdev->wiphy_idx; | |
806a9e39 LR |
81 | } |
82 | ||
79c97e97 | 83 | /* requires cfg80211_rdev_mutex to be held! */ |
806a9e39 LR |
84 | struct wiphy *wiphy_idx_to_wiphy(int wiphy_idx) |
85 | { | |
79c97e97 | 86 | struct cfg80211_registered_device *rdev; |
806a9e39 LR |
87 | |
88 | if (!wiphy_idx_valid(wiphy_idx)) | |
89 | return NULL; | |
90 | ||
91 | assert_cfg80211_lock(); | |
92 | ||
79c97e97 JB |
93 | rdev = cfg80211_rdev_by_wiphy_idx(wiphy_idx); |
94 | if (!rdev) | |
806a9e39 | 95 | return NULL; |
79c97e97 | 96 | return &rdev->wiphy; |
806a9e39 LR |
97 | } |
98 | ||
a1794390 | 99 | /* requires cfg80211_mutex to be held! */ |
4bbf4d56 | 100 | struct cfg80211_registered_device * |
79c97e97 | 101 | __cfg80211_rdev_from_info(struct genl_info *info) |
55682965 JB |
102 | { |
103 | int ifindex; | |
b5850a7a | 104 | struct cfg80211_registered_device *bywiphyidx = NULL, *byifidx = NULL; |
55682965 JB |
105 | struct net_device *dev; |
106 | int err = -EINVAL; | |
107 | ||
761cf7ec LR |
108 | assert_cfg80211_lock(); |
109 | ||
55682965 | 110 | if (info->attrs[NL80211_ATTR_WIPHY]) { |
79c97e97 | 111 | bywiphyidx = cfg80211_rdev_by_wiphy_idx( |
55682965 JB |
112 | nla_get_u32(info->attrs[NL80211_ATTR_WIPHY])); |
113 | err = -ENODEV; | |
114 | } | |
115 | ||
116 | if (info->attrs[NL80211_ATTR_IFINDEX]) { | |
117 | ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]); | |
463d0183 | 118 | dev = dev_get_by_index(genl_info_net(info), ifindex); |
55682965 JB |
119 | if (dev) { |
120 | if (dev->ieee80211_ptr) | |
121 | byifidx = | |
122 | wiphy_to_dev(dev->ieee80211_ptr->wiphy); | |
123 | dev_put(dev); | |
124 | } | |
125 | err = -ENODEV; | |
126 | } | |
127 | ||
b5850a7a LR |
128 | if (bywiphyidx && byifidx) { |
129 | if (bywiphyidx != byifidx) | |
55682965 JB |
130 | return ERR_PTR(-EINVAL); |
131 | else | |
b5850a7a | 132 | return bywiphyidx; /* == byifidx */ |
55682965 | 133 | } |
b5850a7a LR |
134 | if (bywiphyidx) |
135 | return bywiphyidx; | |
55682965 JB |
136 | |
137 | if (byifidx) | |
138 | return byifidx; | |
139 | ||
140 | return ERR_PTR(err); | |
141 | } | |
142 | ||
143 | struct cfg80211_registered_device * | |
144 | cfg80211_get_dev_from_info(struct genl_info *info) | |
145 | { | |
79c97e97 | 146 | struct cfg80211_registered_device *rdev; |
55682965 | 147 | |
a1794390 | 148 | mutex_lock(&cfg80211_mutex); |
79c97e97 | 149 | rdev = __cfg80211_rdev_from_info(info); |
55682965 JB |
150 | |
151 | /* if it is not an error we grab the lock on | |
152 | * it to assure it won't be going away while | |
153 | * we operate on it */ | |
79c97e97 JB |
154 | if (!IS_ERR(rdev)) |
155 | mutex_lock(&rdev->mtx); | |
55682965 | 156 | |
a1794390 | 157 | mutex_unlock(&cfg80211_mutex); |
55682965 | 158 | |
79c97e97 | 159 | return rdev; |
55682965 JB |
160 | } |
161 | ||
162 | struct cfg80211_registered_device * | |
463d0183 | 163 | cfg80211_get_dev_from_ifindex(struct net *net, int ifindex) |
55682965 | 164 | { |
79c97e97 | 165 | struct cfg80211_registered_device *rdev = ERR_PTR(-ENODEV); |
55682965 JB |
166 | struct net_device *dev; |
167 | ||
a1794390 | 168 | mutex_lock(&cfg80211_mutex); |
463d0183 | 169 | dev = dev_get_by_index(net, ifindex); |
55682965 JB |
170 | if (!dev) |
171 | goto out; | |
172 | if (dev->ieee80211_ptr) { | |
79c97e97 JB |
173 | rdev = wiphy_to_dev(dev->ieee80211_ptr->wiphy); |
174 | mutex_lock(&rdev->mtx); | |
55682965 | 175 | } else |
79c97e97 | 176 | rdev = ERR_PTR(-ENODEV); |
55682965 JB |
177 | dev_put(dev); |
178 | out: | |
a1794390 | 179 | mutex_unlock(&cfg80211_mutex); |
79c97e97 | 180 | return rdev; |
55682965 JB |
181 | } |
182 | ||
4bbf4d56 | 183 | /* requires cfg80211_mutex to be held */ |
55682965 JB |
184 | int cfg80211_dev_rename(struct cfg80211_registered_device *rdev, |
185 | char *newname) | |
186 | { | |
79c97e97 | 187 | struct cfg80211_registered_device *rdev2; |
7623225f | 188 | int wiphy_idx, taken = -1, result, digits; |
55682965 | 189 | |
4bbf4d56 | 190 | assert_cfg80211_lock(); |
2940bb69 | 191 | |
7623225f JB |
192 | /* prohibit calling the thing phy%d when %d is not its number */ |
193 | sscanf(newname, PHY_NAME "%d%n", &wiphy_idx, &taken); | |
194 | if (taken == strlen(newname) && wiphy_idx != rdev->wiphy_idx) { | |
195 | /* count number of places needed to print wiphy_idx */ | |
196 | digits = 1; | |
197 | while (wiphy_idx /= 10) | |
198 | digits++; | |
199 | /* | |
200 | * deny the name if it is phy<idx> where <idx> is printed | |
201 | * without leading zeroes. taken == strlen(newname) here | |
202 | */ | |
203 | if (taken == strlen(PHY_NAME) + digits) | |
204 | return -EINVAL; | |
205 | } | |
206 | ||
207 | ||
2940bb69 | 208 | /* Ignore nop renames */ |
2940bb69 | 209 | if (strcmp(newname, dev_name(&rdev->wiphy.dev)) == 0) |
4bbf4d56 | 210 | return 0; |
2940bb69 EB |
211 | |
212 | /* Ensure another device does not already have this name. */ | |
79c97e97 JB |
213 | list_for_each_entry(rdev2, &cfg80211_rdev_list, list) |
214 | if (strcmp(newname, dev_name(&rdev2->wiphy.dev)) == 0) | |
7623225f | 215 | return -EINVAL; |
55682965 | 216 | |
55682965 JB |
217 | result = device_rename(&rdev->wiphy.dev, newname); |
218 | if (result) | |
4bbf4d56 | 219 | return result; |
55682965 | 220 | |
33c0360b JB |
221 | if (rdev->wiphy.debugfsdir && |
222 | !debugfs_rename(rdev->wiphy.debugfsdir->d_parent, | |
55682965 JB |
223 | rdev->wiphy.debugfsdir, |
224 | rdev->wiphy.debugfsdir->d_parent, | |
225 | newname)) | |
e9c0268f | 226 | pr_err("failed to rename debugfs dir to %s!\n", newname); |
55682965 | 227 | |
4bbf4d56 | 228 | nl80211_notify_dev_rename(rdev); |
55682965 | 229 | |
4bbf4d56 | 230 | return 0; |
55682965 JB |
231 | } |
232 | ||
463d0183 JB |
233 | int cfg80211_switch_netns(struct cfg80211_registered_device *rdev, |
234 | struct net *net) | |
235 | { | |
236 | struct wireless_dev *wdev; | |
237 | int err = 0; | |
238 | ||
5be83de5 | 239 | if (!(rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK)) |
463d0183 JB |
240 | return -EOPNOTSUPP; |
241 | ||
242 | list_for_each_entry(wdev, &rdev->netdev_list, list) { | |
243 | wdev->netdev->features &= ~NETIF_F_NETNS_LOCAL; | |
244 | err = dev_change_net_namespace(wdev->netdev, net, "wlan%d"); | |
245 | if (err) | |
246 | break; | |
247 | wdev->netdev->features |= NETIF_F_NETNS_LOCAL; | |
248 | } | |
249 | ||
250 | if (err) { | |
251 | /* failed -- clean up to old netns */ | |
252 | net = wiphy_net(&rdev->wiphy); | |
253 | ||
254 | list_for_each_entry_continue_reverse(wdev, &rdev->netdev_list, | |
255 | list) { | |
256 | wdev->netdev->features &= ~NETIF_F_NETNS_LOCAL; | |
257 | err = dev_change_net_namespace(wdev->netdev, net, | |
258 | "wlan%d"); | |
259 | WARN_ON(err); | |
260 | wdev->netdev->features |= NETIF_F_NETNS_LOCAL; | |
261 | } | |
04600794 JB |
262 | |
263 | return err; | |
463d0183 JB |
264 | } |
265 | ||
266 | wiphy_net_set(&rdev->wiphy, net); | |
267 | ||
04600794 JB |
268 | err = device_rename(&rdev->wiphy.dev, dev_name(&rdev->wiphy.dev)); |
269 | WARN_ON(err); | |
270 | ||
271 | return 0; | |
463d0183 JB |
272 | } |
273 | ||
1f87f7d3 JB |
274 | static void cfg80211_rfkill_poll(struct rfkill *rfkill, void *data) |
275 | { | |
79c97e97 | 276 | struct cfg80211_registered_device *rdev = data; |
1f87f7d3 | 277 | |
79c97e97 | 278 | rdev->ops->rfkill_poll(&rdev->wiphy); |
1f87f7d3 JB |
279 | } |
280 | ||
281 | static int cfg80211_rfkill_set_block(void *data, bool blocked) | |
282 | { | |
79c97e97 | 283 | struct cfg80211_registered_device *rdev = data; |
1f87f7d3 JB |
284 | struct wireless_dev *wdev; |
285 | ||
286 | if (!blocked) | |
287 | return 0; | |
288 | ||
289 | rtnl_lock(); | |
79c97e97 | 290 | mutex_lock(&rdev->devlist_mtx); |
1f87f7d3 | 291 | |
79c97e97 | 292 | list_for_each_entry(wdev, &rdev->netdev_list, list) |
1f87f7d3 JB |
293 | dev_close(wdev->netdev); |
294 | ||
79c97e97 | 295 | mutex_unlock(&rdev->devlist_mtx); |
1f87f7d3 JB |
296 | rtnl_unlock(); |
297 | ||
298 | return 0; | |
299 | } | |
300 | ||
301 | static void cfg80211_rfkill_sync_work(struct work_struct *work) | |
302 | { | |
79c97e97 | 303 | struct cfg80211_registered_device *rdev; |
1f87f7d3 | 304 | |
79c97e97 JB |
305 | rdev = container_of(work, struct cfg80211_registered_device, rfkill_sync); |
306 | cfg80211_rfkill_set_block(rdev, rfkill_blocked(rdev->rfkill)); | |
1f87f7d3 JB |
307 | } |
308 | ||
667503dd JB |
309 | static void cfg80211_event_work(struct work_struct *work) |
310 | { | |
311 | struct cfg80211_registered_device *rdev; | |
667503dd JB |
312 | |
313 | rdev = container_of(work, struct cfg80211_registered_device, | |
314 | event_work); | |
315 | ||
316 | rtnl_lock(); | |
317 | cfg80211_lock_rdev(rdev); | |
667503dd | 318 | |
3d54d255 | 319 | cfg80211_process_rdev_events(rdev); |
667503dd JB |
320 | cfg80211_unlock_rdev(rdev); |
321 | rtnl_unlock(); | |
322 | } | |
323 | ||
704232c2 JB |
324 | /* exported functions */ |
325 | ||
3dcf670b | 326 | struct wiphy *wiphy_new(const struct cfg80211_ops *ops, int sizeof_priv) |
704232c2 | 327 | { |
638af073 | 328 | static int wiphy_counter; |
7623225f JB |
329 | |
330 | struct cfg80211_registered_device *rdev; | |
704232c2 JB |
331 | int alloc_size; |
332 | ||
0b20633d JB |
333 | WARN_ON(ops->add_key && (!ops->del_key || !ops->set_default_key)); |
334 | WARN_ON(ops->auth && (!ops->assoc || !ops->deauth || !ops->disassoc)); | |
335 | WARN_ON(ops->connect && !ops->disconnect); | |
336 | WARN_ON(ops->join_ibss && !ops->leave_ibss); | |
337 | WARN_ON(ops->add_virtual_intf && !ops->del_virtual_intf); | |
338 | WARN_ON(ops->add_station && !ops->del_station); | |
339 | WARN_ON(ops->add_mpath && !ops->del_mpath); | |
29cbe68c | 340 | WARN_ON(ops->join_mesh && !ops->leave_mesh); |
41ade00f | 341 | |
79c97e97 | 342 | alloc_size = sizeof(*rdev) + sizeof_priv; |
704232c2 | 343 | |
79c97e97 JB |
344 | rdev = kzalloc(alloc_size, GFP_KERNEL); |
345 | if (!rdev) | |
704232c2 JB |
346 | return NULL; |
347 | ||
79c97e97 | 348 | rdev->ops = ops; |
704232c2 | 349 | |
a1794390 | 350 | mutex_lock(&cfg80211_mutex); |
704232c2 | 351 | |
79c97e97 | 352 | rdev->wiphy_idx = wiphy_counter++; |
a4d73ee1 | 353 | |
79c97e97 | 354 | if (unlikely(!wiphy_idx_valid(rdev->wiphy_idx))) { |
638af073 | 355 | wiphy_counter--; |
a1794390 | 356 | mutex_unlock(&cfg80211_mutex); |
7623225f | 357 | /* ugh, wrapped! */ |
79c97e97 | 358 | kfree(rdev); |
704232c2 JB |
359 | return NULL; |
360 | } | |
704232c2 | 361 | |
5a254ffe | 362 | mutex_unlock(&cfg80211_mutex); |
79c97e97 | 363 | |
7623225f JB |
364 | /* give it a proper name */ |
365 | dev_set_name(&rdev->wiphy.dev, PHY_NAME "%d", rdev->wiphy_idx); | |
366 | ||
79c97e97 JB |
367 | mutex_init(&rdev->mtx); |
368 | mutex_init(&rdev->devlist_mtx); | |
369 | INIT_LIST_HEAD(&rdev->netdev_list); | |
370 | spin_lock_init(&rdev->bss_lock); | |
371 | INIT_LIST_HEAD(&rdev->bss_list); | |
372 | INIT_WORK(&rdev->scan_done_wk, __cfg80211_scan_done); | |
373 | ||
3d23e349 JB |
374 | #ifdef CONFIG_CFG80211_WEXT |
375 | rdev->wiphy.wext = &cfg80211_wext_handler; | |
376 | #endif | |
377 | ||
79c97e97 JB |
378 | device_initialize(&rdev->wiphy.dev); |
379 | rdev->wiphy.dev.class = &ieee80211_class; | |
380 | rdev->wiphy.dev.platform_data = rdev; | |
381 | ||
5be83de5 JB |
382 | #ifdef CONFIG_CFG80211_DEFAULT_PS |
383 | rdev->wiphy.flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT; | |
384 | #endif | |
16cb9d42 | 385 | |
463d0183 JB |
386 | wiphy_net_set(&rdev->wiphy, &init_net); |
387 | ||
79c97e97 JB |
388 | rdev->rfkill_ops.set_block = cfg80211_rfkill_set_block; |
389 | rdev->rfkill = rfkill_alloc(dev_name(&rdev->wiphy.dev), | |
390 | &rdev->wiphy.dev, RFKILL_TYPE_WLAN, | |
391 | &rdev->rfkill_ops, rdev); | |
392 | ||
393 | if (!rdev->rfkill) { | |
394 | kfree(rdev); | |
1f87f7d3 JB |
395 | return NULL; |
396 | } | |
397 | ||
79c97e97 JB |
398 | INIT_WORK(&rdev->rfkill_sync, cfg80211_rfkill_sync_work); |
399 | INIT_WORK(&rdev->conn_work, cfg80211_conn_work); | |
400 | INIT_WORK(&rdev->event_work, cfg80211_event_work); | |
1f87f7d3 | 401 | |
ad002395 JB |
402 | init_waitqueue_head(&rdev->dev_wait); |
403 | ||
b9a5f8ca JM |
404 | /* |
405 | * Initialize wiphy parameters to IEEE 802.11 MIB default values. | |
406 | * Fragmentation and RTS threshold are disabled by default with the | |
407 | * special -1 value. | |
408 | */ | |
79c97e97 JB |
409 | rdev->wiphy.retry_short = 7; |
410 | rdev->wiphy.retry_long = 4; | |
411 | rdev->wiphy.frag_threshold = (u32) -1; | |
412 | rdev->wiphy.rts_threshold = (u32) -1; | |
81077e82 | 413 | rdev->wiphy.coverage_class = 0; |
b9a5f8ca | 414 | |
79c97e97 | 415 | return &rdev->wiphy; |
704232c2 JB |
416 | } |
417 | EXPORT_SYMBOL(wiphy_new); | |
418 | ||
419 | int wiphy_register(struct wiphy *wiphy) | |
420 | { | |
79c97e97 | 421 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
704232c2 | 422 | int res; |
8318d78a JB |
423 | enum ieee80211_band band; |
424 | struct ieee80211_supported_band *sband; | |
425 | bool have_band = false; | |
426 | int i; | |
f59ac048 LR |
427 | u16 ifmodes = wiphy->interface_modes; |
428 | ||
ef15aac6 JB |
429 | if (WARN_ON(wiphy->addresses && !wiphy->n_addresses)) |
430 | return -EINVAL; | |
431 | ||
432 | if (WARN_ON(wiphy->addresses && | |
433 | !is_zero_ether_addr(wiphy->perm_addr) && | |
434 | memcmp(wiphy->perm_addr, wiphy->addresses[0].addr, | |
435 | ETH_ALEN))) | |
436 | return -EINVAL; | |
437 | ||
438 | if (wiphy->addresses) | |
439 | memcpy(wiphy->perm_addr, wiphy->addresses[0].addr, ETH_ALEN); | |
440 | ||
f59ac048 LR |
441 | /* sanity check ifmodes */ |
442 | WARN_ON(!ifmodes); | |
2e161f78 | 443 | ifmodes &= ((1 << NUM_NL80211_IFTYPES) - 1) & ~1; |
f59ac048 LR |
444 | if (WARN_ON(ifmodes != wiphy->interface_modes)) |
445 | wiphy->interface_modes = ifmodes; | |
8318d78a JB |
446 | |
447 | /* sanity check supported bands/channels */ | |
448 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { | |
449 | sband = wiphy->bands[band]; | |
450 | if (!sband) | |
451 | continue; | |
452 | ||
453 | sband->band = band; | |
454 | ||
881d948c JB |
455 | if (WARN_ON(!sband->n_channels || !sband->n_bitrates)) |
456 | return -EINVAL; | |
457 | ||
40db6c77 AK |
458 | /* |
459 | * Since cfg80211_disable_40mhz_24ghz is global, we can | |
460 | * modify the sband's ht data even if the driver uses a | |
461 | * global structure for that. | |
462 | */ | |
463 | if (cfg80211_disable_40mhz_24ghz && | |
464 | band == IEEE80211_BAND_2GHZ && | |
465 | sband->ht_cap.ht_supported) { | |
466 | sband->ht_cap.cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; | |
467 | sband->ht_cap.cap &= ~IEEE80211_HT_CAP_SGI_40; | |
468 | } | |
469 | ||
881d948c JB |
470 | /* |
471 | * Since we use a u32 for rate bitmaps in | |
472 | * ieee80211_get_response_rate, we cannot | |
473 | * have more than 32 legacy rates. | |
474 | */ | |
475 | if (WARN_ON(sband->n_bitrates > 32)) | |
8318d78a | 476 | return -EINVAL; |
8318d78a JB |
477 | |
478 | for (i = 0; i < sband->n_channels; i++) { | |
479 | sband->channels[i].orig_flags = | |
480 | sband->channels[i].flags; | |
481 | sband->channels[i].orig_mag = | |
482 | sband->channels[i].max_antenna_gain; | |
483 | sband->channels[i].orig_mpwr = | |
484 | sband->channels[i].max_power; | |
485 | sband->channels[i].band = band; | |
486 | } | |
487 | ||
488 | have_band = true; | |
489 | } | |
490 | ||
491 | if (!have_band) { | |
492 | WARN_ON(1); | |
493 | return -EINVAL; | |
494 | } | |
495 | ||
496 | /* check and set up bitrates */ | |
497 | ieee80211_set_bitrate_flags(wiphy); | |
498 | ||
5a652052 MB |
499 | mutex_lock(&cfg80211_mutex); |
500 | ||
79c97e97 | 501 | res = device_add(&rdev->wiphy.dev); |
c3d34d5d JL |
502 | if (res) { |
503 | mutex_unlock(&cfg80211_mutex); | |
504 | return res; | |
505 | } | |
1f87f7d3 | 506 | |
2f0accc1 JB |
507 | /* set up regulatory info */ |
508 | wiphy_update_regulatory(wiphy, NL80211_REGDOM_SET_BY_CORE); | |
509 | ||
5f2aa25e | 510 | list_add_rcu(&rdev->list, &cfg80211_rdev_list); |
f5ea9120 | 511 | cfg80211_rdev_list_generation++; |
704232c2 JB |
512 | |
513 | /* add to debugfs */ | |
79c97e97 JB |
514 | rdev->wiphy.debugfsdir = |
515 | debugfs_create_dir(wiphy_name(&rdev->wiphy), | |
704232c2 | 516 | ieee80211_debugfs_dir); |
79c97e97 JB |
517 | if (IS_ERR(rdev->wiphy.debugfsdir)) |
518 | rdev->wiphy.debugfsdir = NULL; | |
704232c2 | 519 | |
5be83de5 | 520 | if (wiphy->flags & WIPHY_FLAG_CUSTOM_REGULATORY) { |
73d54c9e LR |
521 | struct regulatory_request request; |
522 | ||
523 | request.wiphy_idx = get_wiphy_idx(wiphy); | |
524 | request.initiator = NL80211_REGDOM_SET_BY_DRIVER; | |
525 | request.alpha2[0] = '9'; | |
526 | request.alpha2[1] = '9'; | |
527 | ||
528 | nl80211_send_reg_change_event(&request); | |
529 | } | |
530 | ||
79c97e97 | 531 | cfg80211_debugfs_rdev_add(rdev); |
5a652052 | 532 | mutex_unlock(&cfg80211_mutex); |
1ac61302 | 533 | |
c3d34d5d JL |
534 | /* |
535 | * due to a locking dependency this has to be outside of the | |
536 | * cfg80211_mutex lock | |
537 | */ | |
538 | res = rfkill_register(rdev->rfkill); | |
539 | if (res) | |
540 | goto out_rm_dev; | |
541 | ||
2f0accc1 | 542 | return 0; |
1f87f7d3 | 543 | |
5a652052 | 544 | out_rm_dev: |
79c97e97 | 545 | device_del(&rdev->wiphy.dev); |
704232c2 JB |
546 | return res; |
547 | } | |
548 | EXPORT_SYMBOL(wiphy_register); | |
549 | ||
1f87f7d3 JB |
550 | void wiphy_rfkill_start_polling(struct wiphy *wiphy) |
551 | { | |
79c97e97 | 552 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
1f87f7d3 | 553 | |
79c97e97 | 554 | if (!rdev->ops->rfkill_poll) |
1f87f7d3 | 555 | return; |
79c97e97 JB |
556 | rdev->rfkill_ops.poll = cfg80211_rfkill_poll; |
557 | rfkill_resume_polling(rdev->rfkill); | |
1f87f7d3 JB |
558 | } |
559 | EXPORT_SYMBOL(wiphy_rfkill_start_polling); | |
560 | ||
561 | void wiphy_rfkill_stop_polling(struct wiphy *wiphy) | |
562 | { | |
79c97e97 | 563 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
1f87f7d3 | 564 | |
79c97e97 | 565 | rfkill_pause_polling(rdev->rfkill); |
1f87f7d3 JB |
566 | } |
567 | EXPORT_SYMBOL(wiphy_rfkill_stop_polling); | |
568 | ||
704232c2 JB |
569 | void wiphy_unregister(struct wiphy *wiphy) |
570 | { | |
79c97e97 | 571 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
704232c2 | 572 | |
79c97e97 | 573 | rfkill_unregister(rdev->rfkill); |
1f87f7d3 | 574 | |
f16bfc1c | 575 | /* protect the device list */ |
a1794390 | 576 | mutex_lock(&cfg80211_mutex); |
704232c2 | 577 | |
ad002395 JB |
578 | wait_event(rdev->dev_wait, ({ |
579 | int __count; | |
580 | mutex_lock(&rdev->devlist_mtx); | |
581 | __count = rdev->opencount; | |
582 | mutex_unlock(&rdev->devlist_mtx); | |
583 | __count == 0;})); | |
584 | ||
585 | mutex_lock(&rdev->devlist_mtx); | |
79c97e97 | 586 | BUG_ON(!list_empty(&rdev->netdev_list)); |
ad002395 JB |
587 | mutex_unlock(&rdev->devlist_mtx); |
588 | ||
589 | /* | |
590 | * First remove the hardware from everywhere, this makes | |
591 | * it impossible to find from userspace. | |
592 | */ | |
7bcfaf2f | 593 | debugfs_remove_recursive(rdev->wiphy.debugfsdir); |
5f2aa25e JB |
594 | list_del_rcu(&rdev->list); |
595 | synchronize_rcu(); | |
f16bfc1c JB |
596 | |
597 | /* | |
79c97e97 | 598 | * Try to grab rdev->mtx. If a command is still in progress, |
f16bfc1c JB |
599 | * hopefully the driver will refuse it since it's tearing |
600 | * down the device already. We wait for this command to complete | |
601 | * before unlinking the item from the list. | |
602 | * Note: as codified by the BUG_ON above we cannot get here if | |
ad002395 JB |
603 | * a virtual interface is still present. Hence, we can only get |
604 | * to lock contention here if userspace issues a command that | |
605 | * identified the hardware by wiphy index. | |
f16bfc1c | 606 | */ |
0ff6ce7b | 607 | cfg80211_lock_rdev(rdev); |
ad002395 | 608 | /* nothing */ |
0ff6ce7b | 609 | cfg80211_unlock_rdev(rdev); |
704232c2 | 610 | |
3f2355cb LR |
611 | /* If this device got a regulatory hint tell core its |
612 | * free to listen now to a new shiny device regulatory hint */ | |
613 | reg_device_remove(wiphy); | |
614 | ||
f5ea9120 | 615 | cfg80211_rdev_list_generation++; |
79c97e97 | 616 | device_del(&rdev->wiphy.dev); |
704232c2 | 617 | |
a1794390 | 618 | mutex_unlock(&cfg80211_mutex); |
6682588a | 619 | |
36e6fea8 | 620 | flush_work(&rdev->scan_done_wk); |
6682588a | 621 | cancel_work_sync(&rdev->conn_work); |
6682588a | 622 | flush_work(&rdev->event_work); |
704232c2 JB |
623 | } |
624 | EXPORT_SYMBOL(wiphy_unregister); | |
625 | ||
79c97e97 | 626 | void cfg80211_dev_free(struct cfg80211_registered_device *rdev) |
704232c2 | 627 | { |
2a519311 | 628 | struct cfg80211_internal_bss *scan, *tmp; |
79c97e97 JB |
629 | rfkill_destroy(rdev->rfkill); |
630 | mutex_destroy(&rdev->mtx); | |
631 | mutex_destroy(&rdev->devlist_mtx); | |
632 | list_for_each_entry_safe(scan, tmp, &rdev->bss_list, list) | |
78c1c7e1 | 633 | cfg80211_put_bss(&scan->pub); |
79c97e97 | 634 | kfree(rdev); |
704232c2 JB |
635 | } |
636 | ||
637 | void wiphy_free(struct wiphy *wiphy) | |
638 | { | |
639 | put_device(&wiphy->dev); | |
640 | } | |
641 | EXPORT_SYMBOL(wiphy_free); | |
642 | ||
1f87f7d3 JB |
643 | void wiphy_rfkill_set_hw_state(struct wiphy *wiphy, bool blocked) |
644 | { | |
79c97e97 | 645 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
1f87f7d3 | 646 | |
79c97e97 JB |
647 | if (rfkill_set_hw_state(rdev->rfkill, blocked)) |
648 | schedule_work(&rdev->rfkill_sync); | |
1f87f7d3 JB |
649 | } |
650 | EXPORT_SYMBOL(wiphy_rfkill_set_hw_state); | |
651 | ||
ad002395 JB |
652 | static void wdev_cleanup_work(struct work_struct *work) |
653 | { | |
654 | struct wireless_dev *wdev; | |
655 | struct cfg80211_registered_device *rdev; | |
656 | ||
657 | wdev = container_of(work, struct wireless_dev, cleanup_work); | |
658 | rdev = wiphy_to_dev(wdev->wiphy); | |
659 | ||
660 | cfg80211_lock_rdev(rdev); | |
661 | ||
662 | if (WARN_ON(rdev->scan_req && rdev->scan_req->dev == wdev->netdev)) { | |
663 | rdev->scan_req->aborted = true; | |
01a0ac41 | 664 | ___cfg80211_scan_done(rdev, true); |
ad002395 JB |
665 | } |
666 | ||
667 | cfg80211_unlock_rdev(rdev); | |
668 | ||
669 | mutex_lock(&rdev->devlist_mtx); | |
670 | rdev->opencount--; | |
671 | mutex_unlock(&rdev->devlist_mtx); | |
672 | wake_up(&rdev->dev_wait); | |
673 | ||
674 | dev_put(wdev->netdev); | |
675 | } | |
676 | ||
053a93dd MH |
677 | static struct device_type wiphy_type = { |
678 | .name = "wlan", | |
679 | }; | |
680 | ||
704232c2 JB |
681 | static int cfg80211_netdev_notifier_call(struct notifier_block * nb, |
682 | unsigned long state, | |
683 | void *ndev) | |
684 | { | |
685 | struct net_device *dev = ndev; | |
2a783c13 | 686 | struct wireless_dev *wdev = dev->ieee80211_ptr; |
704232c2 JB |
687 | struct cfg80211_registered_device *rdev; |
688 | ||
2a783c13 | 689 | if (!wdev) |
1f87f7d3 | 690 | return NOTIFY_DONE; |
704232c2 | 691 | |
2a783c13 | 692 | rdev = wiphy_to_dev(wdev->wiphy); |
704232c2 | 693 | |
2a783c13 | 694 | WARN_ON(wdev->iftype == NL80211_IFTYPE_UNSPECIFIED); |
60719ffd | 695 | |
704232c2 | 696 | switch (state) { |
053a93dd MH |
697 | case NETDEV_POST_INIT: |
698 | SET_NETDEV_DEVTYPE(dev, &wiphy_type); | |
699 | break; | |
704232c2 | 700 | case NETDEV_REGISTER: |
0ff6ce7b JB |
701 | /* |
702 | * NB: cannot take rdev->mtx here because this may be | |
703 | * called within code protected by it when interfaces | |
704 | * are added with nl80211. | |
705 | */ | |
667503dd | 706 | mutex_init(&wdev->mtx); |
ad002395 | 707 | INIT_WORK(&wdev->cleanup_work, wdev_cleanup_work); |
667503dd JB |
708 | INIT_LIST_HEAD(&wdev->event_list); |
709 | spin_lock_init(&wdev->event_lock); | |
2e161f78 JB |
710 | INIT_LIST_HEAD(&wdev->mgmt_registrations); |
711 | spin_lock_init(&wdev->mgmt_registrations_lock); | |
026331c4 | 712 | |
704232c2 | 713 | mutex_lock(&rdev->devlist_mtx); |
5f2aa25e | 714 | list_add_rcu(&wdev->list, &rdev->netdev_list); |
f5ea9120 | 715 | rdev->devlist_generation++; |
463d0183 JB |
716 | /* can only change netns with wiphy */ |
717 | dev->features |= NETIF_F_NETNS_LOCAL; | |
718 | ||
704232c2 JB |
719 | if (sysfs_create_link(&dev->dev.kobj, &rdev->wiphy.dev.kobj, |
720 | "phy80211")) { | |
e9c0268f | 721 | pr_err("failed to add phy80211 symlink to netdev!\n"); |
704232c2 | 722 | } |
2a783c13 | 723 | wdev->netdev = dev; |
b23aa676 | 724 | wdev->sme_state = CFG80211_SME_IDLE; |
bc92afd9 | 725 | mutex_unlock(&rdev->devlist_mtx); |
3d23e349 | 726 | #ifdef CONFIG_CFG80211_WEXT |
2a783c13 JB |
727 | wdev->wext.default_key = -1; |
728 | wdev->wext.default_mgmt_key = -1; | |
f2129354 | 729 | wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC; |
ffb9eb3d KV |
730 | #endif |
731 | ||
5be83de5 | 732 | if (wdev->wiphy->flags & WIPHY_FLAG_PS_ON_BY_DEFAULT) |
ffb9eb3d | 733 | wdev->ps = true; |
5be83de5 | 734 | else |
ffb9eb3d | 735 | wdev->ps = false; |
9043f3b8 JO |
736 | /* allow mac80211 to determine the timeout */ |
737 | wdev->ps_timeout = -1; | |
ffb9eb3d | 738 | |
4890e3be JL |
739 | if (!dev->ethtool_ops) |
740 | dev->ethtool_ops = &cfg80211_ethtool_ops; | |
ad4bb6f8 JB |
741 | |
742 | if ((wdev->iftype == NL80211_IFTYPE_STATION || | |
074ac8df | 743 | wdev->iftype == NL80211_IFTYPE_P2P_CLIENT || |
ad4bb6f8 JB |
744 | wdev->iftype == NL80211_IFTYPE_ADHOC) && !wdev->use_4addr) |
745 | dev->priv_flags |= IFF_DONT_BRIDGE; | |
704232c2 | 746 | break; |
04a773ad | 747 | case NETDEV_GOING_DOWN: |
b23aa676 SO |
748 | switch (wdev->iftype) { |
749 | case NL80211_IFTYPE_ADHOC: | |
750 | cfg80211_leave_ibss(rdev, dev, true); | |
751 | break; | |
074ac8df | 752 | case NL80211_IFTYPE_P2P_CLIENT: |
b23aa676 | 753 | case NL80211_IFTYPE_STATION: |
667503dd | 754 | wdev_lock(wdev); |
3d23e349 | 755 | #ifdef CONFIG_CFG80211_WEXT |
f2129354 JB |
756 | kfree(wdev->wext.ie); |
757 | wdev->wext.ie = NULL; | |
758 | wdev->wext.ie_len = 0; | |
0eb14647 | 759 | wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC; |
f2129354 | 760 | #endif |
667503dd JB |
761 | __cfg80211_disconnect(rdev, dev, |
762 | WLAN_REASON_DEAUTH_LEAVING, true); | |
19957bb3 | 763 | cfg80211_mlme_down(rdev, dev); |
667503dd | 764 | wdev_unlock(wdev); |
b23aa676 | 765 | break; |
29cbe68c JB |
766 | case NL80211_IFTYPE_MESH_POINT: |
767 | cfg80211_leave_mesh(rdev, dev); | |
768 | break; | |
b23aa676 SO |
769 | default: |
770 | break; | |
771 | } | |
01a0ac41 JB |
772 | break; |
773 | case NETDEV_DOWN: | |
ad002395 | 774 | dev_hold(dev); |
e60d7443 | 775 | queue_work(cfg80211_wq, &wdev->cleanup_work); |
04a773ad JB |
776 | break; |
777 | case NETDEV_UP: | |
ad002395 JB |
778 | /* |
779 | * If we have a really quick DOWN/UP succession we may | |
780 | * have this work still pending ... cancel it and see | |
781 | * if it was pending, in which case we need to account | |
782 | * for some of the work it would have done. | |
783 | */ | |
784 | if (cancel_work_sync(&wdev->cleanup_work)) { | |
785 | mutex_lock(&rdev->devlist_mtx); | |
786 | rdev->opencount--; | |
787 | mutex_unlock(&rdev->devlist_mtx); | |
788 | dev_put(dev); | |
789 | } | |
667503dd | 790 | cfg80211_lock_rdev(rdev); |
aee83eaf | 791 | mutex_lock(&rdev->devlist_mtx); |
667503dd | 792 | wdev_lock(wdev); |
f2129354 | 793 | switch (wdev->iftype) { |
29cbe68c | 794 | #ifdef CONFIG_CFG80211_WEXT |
f2129354 | 795 | case NL80211_IFTYPE_ADHOC: |
fffd0934 | 796 | cfg80211_ibss_wext_join(rdev, wdev); |
04a773ad | 797 | break; |
f2129354 | 798 | case NL80211_IFTYPE_STATION: |
fffd0934 | 799 | cfg80211_mgd_wext_connect(rdev, wdev); |
f2129354 | 800 | break; |
29cbe68c | 801 | #endif |
c80d545d | 802 | #ifdef CONFIG_MAC80211_MESH |
29cbe68c | 803 | case NL80211_IFTYPE_MESH_POINT: |
c80d545d JC |
804 | { |
805 | /* backward compat code... */ | |
806 | struct mesh_setup setup; | |
807 | memcpy(&setup, &default_mesh_setup, | |
808 | sizeof(setup)); | |
809 | /* back compat only needed for mesh_id */ | |
810 | setup.mesh_id = wdev->ssid; | |
811 | setup.mesh_id_len = wdev->mesh_id_up_len; | |
812 | if (wdev->mesh_id_up_len) | |
813 | __cfg80211_join_mesh(rdev, dev, | |
814 | &setup, | |
815 | &default_mesh_config); | |
816 | break; | |
817 | } | |
818 | #endif | |
f2129354 | 819 | default: |
04a773ad | 820 | break; |
f2129354 | 821 | } |
667503dd | 822 | wdev_unlock(wdev); |
ad002395 | 823 | rdev->opencount++; |
aee83eaf | 824 | mutex_unlock(&rdev->devlist_mtx); |
667503dd | 825 | cfg80211_unlock_rdev(rdev); |
bf6a0579 JO |
826 | |
827 | /* | |
828 | * Configure power management to the driver here so that its | |
829 | * correctly set also after interface type changes etc. | |
830 | */ | |
831 | if (wdev->iftype == NL80211_IFTYPE_STATION && | |
832 | rdev->ops->set_power_mgmt) | |
833 | if (rdev->ops->set_power_mgmt(wdev->wiphy, dev, | |
834 | wdev->ps, | |
835 | wdev->ps_timeout)) { | |
836 | /* assume this means it's off */ | |
837 | wdev->ps = false; | |
838 | } | |
2a783c13 | 839 | break; |
704232c2 | 840 | case NETDEV_UNREGISTER: |
0ff6ce7b JB |
841 | /* |
842 | * NB: cannot take rdev->mtx here because this may be | |
843 | * called within code protected by it when interfaces | |
844 | * are removed with nl80211. | |
845 | */ | |
704232c2 | 846 | mutex_lock(&rdev->devlist_mtx); |
e40cbdac JB |
847 | /* |
848 | * It is possible to get NETDEV_UNREGISTER | |
849 | * multiple times. To detect that, check | |
850 | * that the interface is still on the list | |
851 | * of registered interfaces, and only then | |
852 | * remove and clean it up. | |
853 | */ | |
2a783c13 | 854 | if (!list_empty(&wdev->list)) { |
704232c2 | 855 | sysfs_remove_link(&dev->dev.kobj, "phy80211"); |
5f2aa25e | 856 | list_del_rcu(&wdev->list); |
f5ea9120 | 857 | rdev->devlist_generation++; |
2e161f78 | 858 | cfg80211_mlme_purge_registrations(wdev); |
3d23e349 | 859 | #ifdef CONFIG_CFG80211_WEXT |
e40cbdac | 860 | kfree(wdev->wext.keys); |
fffd0934 | 861 | #endif |
e40cbdac JB |
862 | } |
863 | mutex_unlock(&rdev->devlist_mtx); | |
5f2aa25e JB |
864 | /* |
865 | * synchronise (so that we won't find this netdev | |
866 | * from other code any more) and then clear the list | |
867 | * head so that the above code can safely check for | |
868 | * !list_empty() to avoid double-cleanup. | |
869 | */ | |
870 | synchronize_rcu(); | |
871 | INIT_LIST_HEAD(&wdev->list); | |
704232c2 | 872 | break; |
1f87f7d3 | 873 | case NETDEV_PRE_UP: |
0b20633d JB |
874 | if (!(wdev->wiphy->interface_modes & BIT(wdev->iftype))) |
875 | return notifier_from_errno(-EOPNOTSUPP); | |
1f87f7d3 JB |
876 | if (rfkill_blocked(rdev->rfkill)) |
877 | return notifier_from_errno(-ERFKILL); | |
878 | break; | |
704232c2 JB |
879 | } |
880 | ||
1f87f7d3 | 881 | return NOTIFY_DONE; |
704232c2 JB |
882 | } |
883 | ||
884 | static struct notifier_block cfg80211_netdev_notifier = { | |
885 | .notifier_call = cfg80211_netdev_notifier_call, | |
886 | }; | |
887 | ||
463d0183 JB |
888 | static void __net_exit cfg80211_pernet_exit(struct net *net) |
889 | { | |
890 | struct cfg80211_registered_device *rdev; | |
891 | ||
892 | rtnl_lock(); | |
893 | mutex_lock(&cfg80211_mutex); | |
894 | list_for_each_entry(rdev, &cfg80211_rdev_list, list) { | |
895 | if (net_eq(wiphy_net(&rdev->wiphy), net)) | |
896 | WARN_ON(cfg80211_switch_netns(rdev, &init_net)); | |
897 | } | |
898 | mutex_unlock(&cfg80211_mutex); | |
899 | rtnl_unlock(); | |
900 | } | |
901 | ||
902 | static struct pernet_operations cfg80211_pernet_ops = { | |
903 | .exit = cfg80211_pernet_exit, | |
904 | }; | |
905 | ||
906 | static int __init cfg80211_init(void) | |
704232c2 | 907 | { |
b2e1b302 LR |
908 | int err; |
909 | ||
463d0183 JB |
910 | err = register_pernet_device(&cfg80211_pernet_ops); |
911 | if (err) | |
912 | goto out_fail_pernet; | |
913 | ||
b2e1b302 | 914 | err = wiphy_sysfs_init(); |
704232c2 JB |
915 | if (err) |
916 | goto out_fail_sysfs; | |
917 | ||
918 | err = register_netdevice_notifier(&cfg80211_netdev_notifier); | |
919 | if (err) | |
920 | goto out_fail_notifier; | |
921 | ||
55682965 JB |
922 | err = nl80211_init(); |
923 | if (err) | |
924 | goto out_fail_nl80211; | |
925 | ||
704232c2 JB |
926 | ieee80211_debugfs_dir = debugfs_create_dir("ieee80211", NULL); |
927 | ||
b2e1b302 LR |
928 | err = regulatory_init(); |
929 | if (err) | |
930 | goto out_fail_reg; | |
931 | ||
e60d7443 AB |
932 | cfg80211_wq = create_singlethread_workqueue("cfg80211"); |
933 | if (!cfg80211_wq) | |
934 | goto out_fail_wq; | |
935 | ||
704232c2 JB |
936 | return 0; |
937 | ||
e60d7443 AB |
938 | out_fail_wq: |
939 | regulatory_exit(); | |
b2e1b302 LR |
940 | out_fail_reg: |
941 | debugfs_remove(ieee80211_debugfs_dir); | |
55682965 JB |
942 | out_fail_nl80211: |
943 | unregister_netdevice_notifier(&cfg80211_netdev_notifier); | |
704232c2 JB |
944 | out_fail_notifier: |
945 | wiphy_sysfs_exit(); | |
946 | out_fail_sysfs: | |
463d0183 JB |
947 | unregister_pernet_device(&cfg80211_pernet_ops); |
948 | out_fail_pernet: | |
704232c2 JB |
949 | return err; |
950 | } | |
3a462465 | 951 | subsys_initcall(cfg80211_init); |
704232c2 | 952 | |
f884e387 | 953 | static void __exit cfg80211_exit(void) |
704232c2 JB |
954 | { |
955 | debugfs_remove(ieee80211_debugfs_dir); | |
55682965 | 956 | nl80211_exit(); |
704232c2 JB |
957 | unregister_netdevice_notifier(&cfg80211_netdev_notifier); |
958 | wiphy_sysfs_exit(); | |
b2e1b302 | 959 | regulatory_exit(); |
463d0183 | 960 | unregister_pernet_device(&cfg80211_pernet_ops); |
e60d7443 | 961 | destroy_workqueue(cfg80211_wq); |
704232c2 JB |
962 | } |
963 | module_exit(cfg80211_exit); |