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" |
e35e4d28 | 29 | #include "rdev-ops.h" |
704232c2 JB |
30 | |
31 | /* name for sysfs, %d is appended */ | |
32 | #define PHY_NAME "phy" | |
33 | ||
34 | MODULE_AUTHOR("Johannes Berg"); | |
35 | MODULE_LICENSE("GPL"); | |
36 | MODULE_DESCRIPTION("wireless configuration support"); | |
fb4e1568 | 37 | MODULE_ALIAS_GENL_FAMILY(NL80211_GENL_NAME); |
704232c2 | 38 | |
5fe231e8 | 39 | /* RCU-protected (and RTNL for writers) */ |
79c97e97 | 40 | LIST_HEAD(cfg80211_rdev_list); |
f5ea9120 | 41 | int cfg80211_rdev_list_generation; |
a1794390 | 42 | |
704232c2 JB |
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 | ||
79c97e97 | 54 | struct cfg80211_registered_device *cfg80211_rdev_by_wiphy_idx(int wiphy_idx) |
55682965 | 55 | { |
79c97e97 | 56 | struct cfg80211_registered_device *result = NULL, *rdev; |
55682965 | 57 | |
5fe231e8 | 58 | ASSERT_RTNL(); |
761cf7ec | 59 | |
79c97e97 JB |
60 | list_for_each_entry(rdev, &cfg80211_rdev_list, list) { |
61 | if (rdev->wiphy_idx == wiphy_idx) { | |
62 | result = rdev; | |
55682965 JB |
63 | break; |
64 | } | |
65 | } | |
66 | ||
67 | return result; | |
68 | } | |
69 | ||
806a9e39 LR |
70 | int get_wiphy_idx(struct wiphy *wiphy) |
71 | { | |
f4173766 JB |
72 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
73 | ||
79c97e97 | 74 | return rdev->wiphy_idx; |
806a9e39 LR |
75 | } |
76 | ||
806a9e39 LR |
77 | struct wiphy *wiphy_idx_to_wiphy(int wiphy_idx) |
78 | { | |
79c97e97 | 79 | struct cfg80211_registered_device *rdev; |
806a9e39 | 80 | |
5fe231e8 | 81 | ASSERT_RTNL(); |
806a9e39 | 82 | |
79c97e97 JB |
83 | rdev = cfg80211_rdev_by_wiphy_idx(wiphy_idx); |
84 | if (!rdev) | |
806a9e39 | 85 | return NULL; |
79c97e97 | 86 | return &rdev->wiphy; |
806a9e39 LR |
87 | } |
88 | ||
55682965 JB |
89 | int cfg80211_dev_rename(struct cfg80211_registered_device *rdev, |
90 | char *newname) | |
91 | { | |
79c97e97 | 92 | struct cfg80211_registered_device *rdev2; |
7623225f | 93 | int wiphy_idx, taken = -1, result, digits; |
55682965 | 94 | |
5fe231e8 | 95 | ASSERT_RTNL(); |
2940bb69 | 96 | |
7623225f JB |
97 | /* prohibit calling the thing phy%d when %d is not its number */ |
98 | sscanf(newname, PHY_NAME "%d%n", &wiphy_idx, &taken); | |
99 | if (taken == strlen(newname) && wiphy_idx != rdev->wiphy_idx) { | |
100 | /* count number of places needed to print wiphy_idx */ | |
101 | digits = 1; | |
102 | while (wiphy_idx /= 10) | |
103 | digits++; | |
104 | /* | |
105 | * deny the name if it is phy<idx> where <idx> is printed | |
106 | * without leading zeroes. taken == strlen(newname) here | |
107 | */ | |
108 | if (taken == strlen(PHY_NAME) + digits) | |
109 | return -EINVAL; | |
110 | } | |
111 | ||
112 | ||
2940bb69 | 113 | /* Ignore nop renames */ |
2940bb69 | 114 | if (strcmp(newname, dev_name(&rdev->wiphy.dev)) == 0) |
4bbf4d56 | 115 | return 0; |
2940bb69 EB |
116 | |
117 | /* Ensure another device does not already have this name. */ | |
79c97e97 JB |
118 | list_for_each_entry(rdev2, &cfg80211_rdev_list, list) |
119 | if (strcmp(newname, dev_name(&rdev2->wiphy.dev)) == 0) | |
7623225f | 120 | return -EINVAL; |
55682965 | 121 | |
55682965 JB |
122 | result = device_rename(&rdev->wiphy.dev, newname); |
123 | if (result) | |
4bbf4d56 | 124 | return result; |
55682965 | 125 | |
33c0360b JB |
126 | if (rdev->wiphy.debugfsdir && |
127 | !debugfs_rename(rdev->wiphy.debugfsdir->d_parent, | |
55682965 JB |
128 | rdev->wiphy.debugfsdir, |
129 | rdev->wiphy.debugfsdir->d_parent, | |
130 | newname)) | |
e9c0268f | 131 | pr_err("failed to rename debugfs dir to %s!\n", newname); |
55682965 | 132 | |
4bbf4d56 | 133 | nl80211_notify_dev_rename(rdev); |
55682965 | 134 | |
4bbf4d56 | 135 | return 0; |
55682965 JB |
136 | } |
137 | ||
463d0183 JB |
138 | int cfg80211_switch_netns(struct cfg80211_registered_device *rdev, |
139 | struct net *net) | |
140 | { | |
141 | struct wireless_dev *wdev; | |
142 | int err = 0; | |
143 | ||
5be83de5 | 144 | if (!(rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK)) |
463d0183 JB |
145 | return -EOPNOTSUPP; |
146 | ||
89a54e48 | 147 | list_for_each_entry(wdev, &rdev->wdev_list, list) { |
ba22fb5b JB |
148 | if (!wdev->netdev) |
149 | continue; | |
463d0183 JB |
150 | wdev->netdev->features &= ~NETIF_F_NETNS_LOCAL; |
151 | err = dev_change_net_namespace(wdev->netdev, net, "wlan%d"); | |
152 | if (err) | |
153 | break; | |
154 | wdev->netdev->features |= NETIF_F_NETNS_LOCAL; | |
155 | } | |
156 | ||
157 | if (err) { | |
158 | /* failed -- clean up to old netns */ | |
159 | net = wiphy_net(&rdev->wiphy); | |
160 | ||
89a54e48 | 161 | list_for_each_entry_continue_reverse(wdev, &rdev->wdev_list, |
463d0183 | 162 | list) { |
ba22fb5b JB |
163 | if (!wdev->netdev) |
164 | continue; | |
463d0183 JB |
165 | wdev->netdev->features &= ~NETIF_F_NETNS_LOCAL; |
166 | err = dev_change_net_namespace(wdev->netdev, net, | |
167 | "wlan%d"); | |
168 | WARN_ON(err); | |
169 | wdev->netdev->features |= NETIF_F_NETNS_LOCAL; | |
170 | } | |
04600794 JB |
171 | |
172 | return err; | |
463d0183 JB |
173 | } |
174 | ||
175 | wiphy_net_set(&rdev->wiphy, net); | |
176 | ||
04600794 JB |
177 | err = device_rename(&rdev->wiphy.dev, dev_name(&rdev->wiphy.dev)); |
178 | WARN_ON(err); | |
179 | ||
180 | return 0; | |
463d0183 JB |
181 | } |
182 | ||
1f87f7d3 JB |
183 | static void cfg80211_rfkill_poll(struct rfkill *rfkill, void *data) |
184 | { | |
79c97e97 | 185 | struct cfg80211_registered_device *rdev = data; |
1f87f7d3 | 186 | |
e35e4d28 | 187 | rdev_rfkill_poll(rdev); |
1f87f7d3 JB |
188 | } |
189 | ||
f9f47529 JB |
190 | void cfg80211_stop_p2p_device(struct cfg80211_registered_device *rdev, |
191 | struct wireless_dev *wdev) | |
192 | { | |
5fe231e8 | 193 | ASSERT_RTNL(); |
f9f47529 JB |
194 | |
195 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)) | |
196 | return; | |
197 | ||
198 | if (!wdev->p2p_started) | |
199 | return; | |
200 | ||
201 | rdev_stop_p2p_device(rdev, wdev); | |
202 | wdev->p2p_started = false; | |
203 | ||
204 | rdev->opencount--; | |
205 | ||
206 | if (rdev->scan_req && rdev->scan_req->wdev == wdev) { | |
f9f47529 | 207 | /* |
1cdd59ce JB |
208 | * If the scan request wasn't notified as done, set it |
209 | * to aborted and leak it after a warning. The driver | |
210 | * should have notified us that it ended at the latest | |
211 | * during rdev_stop_p2p_device(). | |
f9f47529 | 212 | */ |
1cdd59ce JB |
213 | if (WARN_ON(!rdev->scan_req->notified)) |
214 | rdev->scan_req->aborted = true; | |
215 | ___cfg80211_scan_done(rdev, !rdev->scan_req->notified); | |
f9f47529 JB |
216 | } |
217 | } | |
218 | ||
1f87f7d3 JB |
219 | static int cfg80211_rfkill_set_block(void *data, bool blocked) |
220 | { | |
79c97e97 | 221 | struct cfg80211_registered_device *rdev = data; |
1f87f7d3 JB |
222 | struct wireless_dev *wdev; |
223 | ||
224 | if (!blocked) | |
225 | return 0; | |
226 | ||
227 | rtnl_lock(); | |
f9f47529 | 228 | |
98104fde JB |
229 | list_for_each_entry(wdev, &rdev->wdev_list, list) { |
230 | if (wdev->netdev) { | |
ba22fb5b | 231 | dev_close(wdev->netdev); |
98104fde JB |
232 | continue; |
233 | } | |
234 | /* otherwise, check iftype */ | |
235 | switch (wdev->iftype) { | |
236 | case NL80211_IFTYPE_P2P_DEVICE: | |
f9f47529 | 237 | cfg80211_stop_p2p_device(rdev, wdev); |
98104fde JB |
238 | break; |
239 | default: | |
240 | break; | |
241 | } | |
242 | } | |
1f87f7d3 | 243 | |
1f87f7d3 JB |
244 | rtnl_unlock(); |
245 | ||
246 | return 0; | |
247 | } | |
248 | ||
249 | static void cfg80211_rfkill_sync_work(struct work_struct *work) | |
250 | { | |
79c97e97 | 251 | struct cfg80211_registered_device *rdev; |
1f87f7d3 | 252 | |
79c97e97 JB |
253 | rdev = container_of(work, struct cfg80211_registered_device, rfkill_sync); |
254 | cfg80211_rfkill_set_block(rdev, rfkill_blocked(rdev->rfkill)); | |
1f87f7d3 JB |
255 | } |
256 | ||
667503dd JB |
257 | static void cfg80211_event_work(struct work_struct *work) |
258 | { | |
259 | struct cfg80211_registered_device *rdev; | |
667503dd JB |
260 | |
261 | rdev = container_of(work, struct cfg80211_registered_device, | |
262 | event_work); | |
263 | ||
264 | rtnl_lock(); | |
3d54d255 | 265 | cfg80211_process_rdev_events(rdev); |
667503dd JB |
266 | rtnl_unlock(); |
267 | } | |
268 | ||
704232c2 JB |
269 | /* exported functions */ |
270 | ||
3dcf670b | 271 | struct wiphy *wiphy_new(const struct cfg80211_ops *ops, int sizeof_priv) |
704232c2 | 272 | { |
73810b77 | 273 | static atomic_t wiphy_counter = ATOMIC_INIT(0); |
7623225f JB |
274 | |
275 | struct cfg80211_registered_device *rdev; | |
704232c2 JB |
276 | int alloc_size; |
277 | ||
0b20633d JB |
278 | WARN_ON(ops->add_key && (!ops->del_key || !ops->set_default_key)); |
279 | WARN_ON(ops->auth && (!ops->assoc || !ops->deauth || !ops->disassoc)); | |
280 | WARN_ON(ops->connect && !ops->disconnect); | |
281 | WARN_ON(ops->join_ibss && !ops->leave_ibss); | |
282 | WARN_ON(ops->add_virtual_intf && !ops->del_virtual_intf); | |
283 | WARN_ON(ops->add_station && !ops->del_station); | |
284 | WARN_ON(ops->add_mpath && !ops->del_mpath); | |
29cbe68c | 285 | WARN_ON(ops->join_mesh && !ops->leave_mesh); |
41ade00f | 286 | |
79c97e97 | 287 | alloc_size = sizeof(*rdev) + sizeof_priv; |
704232c2 | 288 | |
79c97e97 JB |
289 | rdev = kzalloc(alloc_size, GFP_KERNEL); |
290 | if (!rdev) | |
704232c2 JB |
291 | return NULL; |
292 | ||
79c97e97 | 293 | rdev->ops = ops; |
704232c2 | 294 | |
73810b77 | 295 | rdev->wiphy_idx = atomic_inc_return(&wiphy_counter); |
a4d73ee1 | 296 | |
f4173766 | 297 | if (unlikely(rdev->wiphy_idx < 0)) { |
7623225f | 298 | /* ugh, wrapped! */ |
73810b77 | 299 | atomic_dec(&wiphy_counter); |
79c97e97 | 300 | kfree(rdev); |
704232c2 JB |
301 | return NULL; |
302 | } | |
704232c2 | 303 | |
7623225f JB |
304 | /* give it a proper name */ |
305 | dev_set_name(&rdev->wiphy.dev, PHY_NAME "%d", rdev->wiphy_idx); | |
306 | ||
89a54e48 | 307 | INIT_LIST_HEAD(&rdev->wdev_list); |
37c73b5f BG |
308 | INIT_LIST_HEAD(&rdev->beacon_registrations); |
309 | spin_lock_init(&rdev->beacon_registrations_lock); | |
79c97e97 JB |
310 | spin_lock_init(&rdev->bss_lock); |
311 | INIT_LIST_HEAD(&rdev->bss_list); | |
312 | INIT_WORK(&rdev->scan_done_wk, __cfg80211_scan_done); | |
807f8a8c | 313 | INIT_WORK(&rdev->sched_scan_results_wk, __cfg80211_sched_scan_results); |
04f39047 SW |
314 | INIT_DELAYED_WORK(&rdev->dfs_update_channels_wk, |
315 | cfg80211_dfs_channels_update_work); | |
3d23e349 JB |
316 | #ifdef CONFIG_CFG80211_WEXT |
317 | rdev->wiphy.wext = &cfg80211_wext_handler; | |
318 | #endif | |
319 | ||
79c97e97 JB |
320 | device_initialize(&rdev->wiphy.dev); |
321 | rdev->wiphy.dev.class = &ieee80211_class; | |
322 | rdev->wiphy.dev.platform_data = rdev; | |
323 | ||
5be83de5 JB |
324 | #ifdef CONFIG_CFG80211_DEFAULT_PS |
325 | rdev->wiphy.flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT; | |
326 | #endif | |
16cb9d42 | 327 | |
463d0183 JB |
328 | wiphy_net_set(&rdev->wiphy, &init_net); |
329 | ||
79c97e97 JB |
330 | rdev->rfkill_ops.set_block = cfg80211_rfkill_set_block; |
331 | rdev->rfkill = rfkill_alloc(dev_name(&rdev->wiphy.dev), | |
332 | &rdev->wiphy.dev, RFKILL_TYPE_WLAN, | |
333 | &rdev->rfkill_ops, rdev); | |
334 | ||
335 | if (!rdev->rfkill) { | |
336 | kfree(rdev); | |
1f87f7d3 JB |
337 | return NULL; |
338 | } | |
339 | ||
79c97e97 JB |
340 | INIT_WORK(&rdev->rfkill_sync, cfg80211_rfkill_sync_work); |
341 | INIT_WORK(&rdev->conn_work, cfg80211_conn_work); | |
342 | INIT_WORK(&rdev->event_work, cfg80211_event_work); | |
1f87f7d3 | 343 | |
ad002395 JB |
344 | init_waitqueue_head(&rdev->dev_wait); |
345 | ||
b9a5f8ca JM |
346 | /* |
347 | * Initialize wiphy parameters to IEEE 802.11 MIB default values. | |
348 | * Fragmentation and RTS threshold are disabled by default with the | |
349 | * special -1 value. | |
350 | */ | |
79c97e97 JB |
351 | rdev->wiphy.retry_short = 7; |
352 | rdev->wiphy.retry_long = 4; | |
353 | rdev->wiphy.frag_threshold = (u32) -1; | |
354 | rdev->wiphy.rts_threshold = (u32) -1; | |
81077e82 | 355 | rdev->wiphy.coverage_class = 0; |
b9a5f8ca | 356 | |
d0ae708d | 357 | rdev->wiphy.features = NL80211_FEATURE_SCAN_FLUSH; |
15d6030b | 358 | |
79c97e97 | 359 | return &rdev->wiphy; |
704232c2 JB |
360 | } |
361 | EXPORT_SYMBOL(wiphy_new); | |
362 | ||
7527a782 JB |
363 | static int wiphy_verify_combinations(struct wiphy *wiphy) |
364 | { | |
365 | const struct ieee80211_iface_combination *c; | |
366 | int i, j; | |
367 | ||
7527a782 JB |
368 | for (i = 0; i < wiphy->n_iface_combinations; i++) { |
369 | u32 cnt = 0; | |
370 | u16 all_iftypes = 0; | |
371 | ||
372 | c = &wiphy->iface_combinations[i]; | |
373 | ||
11c4a075 SW |
374 | /* |
375 | * Combinations with just one interface aren't real, | |
376 | * however we make an exception for DFS. | |
377 | */ | |
378 | if (WARN_ON((c->max_interfaces < 2) && !c->radar_detect_widths)) | |
7527a782 JB |
379 | return -EINVAL; |
380 | ||
381 | /* Need at least one channel */ | |
382 | if (WARN_ON(!c->num_different_channels)) | |
383 | return -EINVAL; | |
384 | ||
d4e50c59 MK |
385 | /* |
386 | * Put a sane limit on maximum number of different | |
387 | * channels to simplify channel accounting code. | |
388 | */ | |
389 | if (WARN_ON(c->num_different_channels > | |
390 | CFG80211_MAX_NUM_DIFFERENT_CHANNELS)) | |
391 | return -EINVAL; | |
392 | ||
11c4a075 SW |
393 | /* DFS only works on one channel. */ |
394 | if (WARN_ON(c->radar_detect_widths && | |
395 | (c->num_different_channels > 1))) | |
396 | return -EINVAL; | |
397 | ||
7527a782 JB |
398 | if (WARN_ON(!c->n_limits)) |
399 | return -EINVAL; | |
400 | ||
401 | for (j = 0; j < c->n_limits; j++) { | |
402 | u16 types = c->limits[j].types; | |
403 | ||
404 | /* | |
405 | * interface types shouldn't overlap, this is | |
406 | * used in cfg80211_can_change_interface() | |
407 | */ | |
408 | if (WARN_ON(types & all_iftypes)) | |
409 | return -EINVAL; | |
410 | all_iftypes |= types; | |
411 | ||
412 | if (WARN_ON(!c->limits[j].max)) | |
413 | return -EINVAL; | |
414 | ||
415 | /* Shouldn't list software iftypes in combinations! */ | |
416 | if (WARN_ON(wiphy->software_iftypes & types)) | |
417 | return -EINVAL; | |
418 | ||
98104fde JB |
419 | /* Only a single P2P_DEVICE can be allowed */ |
420 | if (WARN_ON(types & BIT(NL80211_IFTYPE_P2P_DEVICE) && | |
421 | c->limits[j].max > 1)) | |
422 | return -EINVAL; | |
423 | ||
7527a782 JB |
424 | cnt += c->limits[j].max; |
425 | /* | |
426 | * Don't advertise an unsupported type | |
427 | * in a combination. | |
428 | */ | |
429 | if (WARN_ON((wiphy->interface_modes & types) != types)) | |
430 | return -EINVAL; | |
431 | } | |
432 | ||
433 | /* You can't even choose that many! */ | |
434 | if (WARN_ON(cnt < c->max_interfaces)) | |
435 | return -EINVAL; | |
436 | } | |
437 | ||
438 | return 0; | |
439 | } | |
440 | ||
704232c2 JB |
441 | int wiphy_register(struct wiphy *wiphy) |
442 | { | |
79c97e97 | 443 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
704232c2 | 444 | int res; |
8318d78a JB |
445 | enum ieee80211_band band; |
446 | struct ieee80211_supported_band *sband; | |
447 | bool have_band = false; | |
448 | int i; | |
f59ac048 LR |
449 | u16 ifmodes = wiphy->interface_modes; |
450 | ||
dfb89c56 | 451 | #ifdef CONFIG_PM |
964dc9e2 JB |
452 | if (WARN_ON(wiphy->wowlan && |
453 | (wiphy->wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) && | |
454 | !(wiphy->wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY))) | |
455 | return -EINVAL; | |
456 | if (WARN_ON(wiphy->wowlan && | |
457 | !wiphy->wowlan->flags && !wiphy->wowlan->n_patterns && | |
458 | !wiphy->wowlan->tcp)) | |
77dbbb13 | 459 | return -EINVAL; |
dfb89c56 | 460 | #endif |
77dbbb13 | 461 | |
562a7480 JB |
462 | if (WARN_ON(wiphy->ap_sme_capa && |
463 | !(wiphy->flags & WIPHY_FLAG_HAVE_AP_SME))) | |
464 | return -EINVAL; | |
465 | ||
ef15aac6 JB |
466 | if (WARN_ON(wiphy->addresses && !wiphy->n_addresses)) |
467 | return -EINVAL; | |
468 | ||
469 | if (WARN_ON(wiphy->addresses && | |
470 | !is_zero_ether_addr(wiphy->perm_addr) && | |
471 | memcmp(wiphy->perm_addr, wiphy->addresses[0].addr, | |
472 | ETH_ALEN))) | |
473 | return -EINVAL; | |
474 | ||
77765eaf VT |
475 | if (WARN_ON(wiphy->max_acl_mac_addrs && |
476 | (!(wiphy->flags & WIPHY_FLAG_HAVE_AP_SME) || | |
477 | !rdev->ops->set_mac_acl))) | |
478 | return -EINVAL; | |
479 | ||
ef15aac6 JB |
480 | if (wiphy->addresses) |
481 | memcpy(wiphy->perm_addr, wiphy->addresses[0].addr, ETH_ALEN); | |
482 | ||
f59ac048 LR |
483 | /* sanity check ifmodes */ |
484 | WARN_ON(!ifmodes); | |
2e161f78 | 485 | ifmodes &= ((1 << NUM_NL80211_IFTYPES) - 1) & ~1; |
f59ac048 LR |
486 | if (WARN_ON(ifmodes != wiphy->interface_modes)) |
487 | wiphy->interface_modes = ifmodes; | |
8318d78a | 488 | |
7527a782 JB |
489 | res = wiphy_verify_combinations(wiphy); |
490 | if (res) | |
491 | return res; | |
492 | ||
8318d78a JB |
493 | /* sanity check supported bands/channels */ |
494 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { | |
495 | sband = wiphy->bands[band]; | |
496 | if (!sband) | |
497 | continue; | |
498 | ||
499 | sband->band = band; | |
3a0c52a6 VK |
500 | if (WARN_ON(!sband->n_channels)) |
501 | return -EINVAL; | |
502 | /* | |
503 | * on 60gHz band, there are no legacy rates, so | |
504 | * n_bitrates is 0 | |
505 | */ | |
506 | if (WARN_ON(band != IEEE80211_BAND_60GHZ && | |
507 | !sband->n_bitrates)) | |
881d948c JB |
508 | return -EINVAL; |
509 | ||
40db6c77 AK |
510 | /* |
511 | * Since cfg80211_disable_40mhz_24ghz is global, we can | |
512 | * modify the sband's ht data even if the driver uses a | |
513 | * global structure for that. | |
514 | */ | |
515 | if (cfg80211_disable_40mhz_24ghz && | |
516 | band == IEEE80211_BAND_2GHZ && | |
517 | sband->ht_cap.ht_supported) { | |
518 | sband->ht_cap.cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; | |
519 | sband->ht_cap.cap &= ~IEEE80211_HT_CAP_SGI_40; | |
520 | } | |
521 | ||
881d948c JB |
522 | /* |
523 | * Since we use a u32 for rate bitmaps in | |
524 | * ieee80211_get_response_rate, we cannot | |
525 | * have more than 32 legacy rates. | |
526 | */ | |
527 | if (WARN_ON(sband->n_bitrates > 32)) | |
8318d78a | 528 | return -EINVAL; |
8318d78a JB |
529 | |
530 | for (i = 0; i < sband->n_channels; i++) { | |
531 | sband->channels[i].orig_flags = | |
532 | sband->channels[i].flags; | |
c4a9fafc | 533 | sband->channels[i].orig_mag = INT_MAX; |
8318d78a JB |
534 | sband->channels[i].orig_mpwr = |
535 | sband->channels[i].max_power; | |
536 | sband->channels[i].band = band; | |
537 | } | |
538 | ||
539 | have_band = true; | |
540 | } | |
541 | ||
542 | if (!have_band) { | |
543 | WARN_ON(1); | |
544 | return -EINVAL; | |
545 | } | |
546 | ||
dfb89c56 | 547 | #ifdef CONFIG_PM |
964dc9e2 JB |
548 | if (WARN_ON(rdev->wiphy.wowlan && rdev->wiphy.wowlan->n_patterns && |
549 | (!rdev->wiphy.wowlan->pattern_min_len || | |
550 | rdev->wiphy.wowlan->pattern_min_len > | |
551 | rdev->wiphy.wowlan->pattern_max_len))) | |
552 | return -EINVAL; | |
dfb89c56 | 553 | #endif |
ff1b6e69 | 554 | |
8318d78a JB |
555 | /* check and set up bitrates */ |
556 | ieee80211_set_bitrate_flags(wiphy); | |
557 | ||
5fe231e8 | 558 | rtnl_lock(); |
5a652052 | 559 | |
79c97e97 | 560 | res = device_add(&rdev->wiphy.dev); |
c3d34d5d | 561 | if (res) { |
5fe231e8 | 562 | rtnl_unlock(); |
c3d34d5d JL |
563 | return res; |
564 | } | |
1f87f7d3 | 565 | |
2f0accc1 | 566 | /* set up regulatory info */ |
57b5ce07 | 567 | wiphy_regulatory_register(wiphy); |
2f0accc1 | 568 | |
5f2aa25e | 569 | list_add_rcu(&rdev->list, &cfg80211_rdev_list); |
f5ea9120 | 570 | cfg80211_rdev_list_generation++; |
704232c2 JB |
571 | |
572 | /* add to debugfs */ | |
79c97e97 JB |
573 | rdev->wiphy.debugfsdir = |
574 | debugfs_create_dir(wiphy_name(&rdev->wiphy), | |
704232c2 | 575 | ieee80211_debugfs_dir); |
79c97e97 JB |
576 | if (IS_ERR(rdev->wiphy.debugfsdir)) |
577 | rdev->wiphy.debugfsdir = NULL; | |
704232c2 | 578 | |
5be83de5 | 579 | if (wiphy->flags & WIPHY_FLAG_CUSTOM_REGULATORY) { |
73d54c9e LR |
580 | struct regulatory_request request; |
581 | ||
582 | request.wiphy_idx = get_wiphy_idx(wiphy); | |
583 | request.initiator = NL80211_REGDOM_SET_BY_DRIVER; | |
584 | request.alpha2[0] = '9'; | |
585 | request.alpha2[1] = '9'; | |
586 | ||
587 | nl80211_send_reg_change_event(&request); | |
588 | } | |
589 | ||
79c97e97 | 590 | cfg80211_debugfs_rdev_add(rdev); |
1ac61302 | 591 | |
c3d34d5d | 592 | res = rfkill_register(rdev->rfkill); |
03cd7e4e JB |
593 | if (res) { |
594 | device_del(&rdev->wiphy.dev); | |
595 | ||
03cd7e4e JB |
596 | debugfs_remove_recursive(rdev->wiphy.debugfsdir); |
597 | list_del_rcu(&rdev->list); | |
598 | wiphy_regulatory_deregister(wiphy); | |
5fe231e8 | 599 | rtnl_unlock(); |
03cd7e4e JB |
600 | return res; |
601 | } | |
c3d34d5d | 602 | |
ecb44335 SG |
603 | rdev->wiphy.registered = true; |
604 | rtnl_unlock(); | |
2f0accc1 | 605 | return 0; |
704232c2 JB |
606 | } |
607 | EXPORT_SYMBOL(wiphy_register); | |
608 | ||
1f87f7d3 JB |
609 | void wiphy_rfkill_start_polling(struct wiphy *wiphy) |
610 | { | |
79c97e97 | 611 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
1f87f7d3 | 612 | |
79c97e97 | 613 | if (!rdev->ops->rfkill_poll) |
1f87f7d3 | 614 | return; |
79c97e97 JB |
615 | rdev->rfkill_ops.poll = cfg80211_rfkill_poll; |
616 | rfkill_resume_polling(rdev->rfkill); | |
1f87f7d3 JB |
617 | } |
618 | EXPORT_SYMBOL(wiphy_rfkill_start_polling); | |
619 | ||
620 | void wiphy_rfkill_stop_polling(struct wiphy *wiphy) | |
621 | { | |
79c97e97 | 622 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
1f87f7d3 | 623 | |
79c97e97 | 624 | rfkill_pause_polling(rdev->rfkill); |
1f87f7d3 JB |
625 | } |
626 | EXPORT_SYMBOL(wiphy_rfkill_stop_polling); | |
627 | ||
704232c2 JB |
628 | void wiphy_unregister(struct wiphy *wiphy) |
629 | { | |
79c97e97 | 630 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
704232c2 | 631 | |
ad002395 JB |
632 | wait_event(rdev->dev_wait, ({ |
633 | int __count; | |
5fe231e8 | 634 | rtnl_lock(); |
ad002395 | 635 | __count = rdev->opencount; |
5fe231e8 | 636 | rtnl_unlock(); |
c4f60846 | 637 | __count == 0; })); |
ad002395 | 638 | |
5fe231e8 JB |
639 | rtnl_lock(); |
640 | rdev->wiphy.registered = false; | |
641 | ||
642 | rfkill_unregister(rdev->rfkill); | |
643 | ||
89a54e48 | 644 | BUG_ON(!list_empty(&rdev->wdev_list)); |
ad002395 JB |
645 | |
646 | /* | |
647 | * First remove the hardware from everywhere, this makes | |
648 | * it impossible to find from userspace. | |
649 | */ | |
7bcfaf2f | 650 | debugfs_remove_recursive(rdev->wiphy.debugfsdir); |
5f2aa25e JB |
651 | list_del_rcu(&rdev->list); |
652 | synchronize_rcu(); | |
f16bfc1c | 653 | |
bfead080 LR |
654 | /* |
655 | * If this device got a regulatory hint tell core its | |
656 | * free to listen now to a new shiny device regulatory hint | |
657 | */ | |
658 | wiphy_regulatory_deregister(wiphy); | |
3f2355cb | 659 | |
f5ea9120 | 660 | cfg80211_rdev_list_generation++; |
79c97e97 | 661 | device_del(&rdev->wiphy.dev); |
704232c2 | 662 | |
5fe231e8 | 663 | rtnl_unlock(); |
6682588a | 664 | |
36e6fea8 | 665 | flush_work(&rdev->scan_done_wk); |
6682588a | 666 | cancel_work_sync(&rdev->conn_work); |
6682588a | 667 | flush_work(&rdev->event_work); |
04f39047 | 668 | cancel_delayed_work_sync(&rdev->dfs_update_channels_wk); |
6d52563f | 669 | |
6abb9cb9 JB |
670 | #ifdef CONFIG_PM |
671 | if (rdev->wiphy.wowlan_config && rdev->ops->set_wakeup) | |
e35e4d28 | 672 | rdev_set_wakeup(rdev, false); |
6abb9cb9 | 673 | #endif |
6d52563f | 674 | cfg80211_rdev_free_wowlan(rdev); |
704232c2 JB |
675 | } |
676 | EXPORT_SYMBOL(wiphy_unregister); | |
677 | ||
79c97e97 | 678 | void cfg80211_dev_free(struct cfg80211_registered_device *rdev) |
704232c2 | 679 | { |
2a519311 | 680 | struct cfg80211_internal_bss *scan, *tmp; |
37c73b5f | 681 | struct cfg80211_beacon_registration *reg, *treg; |
79c97e97 | 682 | rfkill_destroy(rdev->rfkill); |
37c73b5f BG |
683 | list_for_each_entry_safe(reg, treg, &rdev->beacon_registrations, list) { |
684 | list_del(®->list); | |
685 | kfree(reg); | |
686 | } | |
79c97e97 | 687 | list_for_each_entry_safe(scan, tmp, &rdev->bss_list, list) |
5b112d3d | 688 | cfg80211_put_bss(&rdev->wiphy, &scan->pub); |
79c97e97 | 689 | kfree(rdev); |
704232c2 JB |
690 | } |
691 | ||
692 | void wiphy_free(struct wiphy *wiphy) | |
693 | { | |
694 | put_device(&wiphy->dev); | |
695 | } | |
696 | EXPORT_SYMBOL(wiphy_free); | |
697 | ||
1f87f7d3 JB |
698 | void wiphy_rfkill_set_hw_state(struct wiphy *wiphy, bool blocked) |
699 | { | |
79c97e97 | 700 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
1f87f7d3 | 701 | |
79c97e97 JB |
702 | if (rfkill_set_hw_state(rdev->rfkill, blocked)) |
703 | schedule_work(&rdev->rfkill_sync); | |
1f87f7d3 JB |
704 | } |
705 | EXPORT_SYMBOL(wiphy_rfkill_set_hw_state); | |
706 | ||
98104fde JB |
707 | void cfg80211_unregister_wdev(struct wireless_dev *wdev) |
708 | { | |
709 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); | |
710 | ||
711 | ASSERT_RTNL(); | |
712 | ||
713 | if (WARN_ON(wdev->netdev)) | |
714 | return; | |
715 | ||
98104fde JB |
716 | list_del_rcu(&wdev->list); |
717 | rdev->devlist_generation++; | |
718 | ||
719 | switch (wdev->iftype) { | |
720 | case NL80211_IFTYPE_P2P_DEVICE: | |
f9f47529 | 721 | cfg80211_stop_p2p_device(rdev, wdev); |
98104fde JB |
722 | break; |
723 | default: | |
724 | WARN_ON_ONCE(1); | |
725 | break; | |
726 | } | |
98104fde JB |
727 | } |
728 | EXPORT_SYMBOL(cfg80211_unregister_wdev); | |
729 | ||
053a93dd MH |
730 | static struct device_type wiphy_type = { |
731 | .name = "wlan", | |
732 | }; | |
733 | ||
dbbae26a MK |
734 | void cfg80211_update_iface_num(struct cfg80211_registered_device *rdev, |
735 | enum nl80211_iftype iftype, int num) | |
736 | { | |
c5a7e582 | 737 | ASSERT_RTNL(); |
dbbae26a MK |
738 | |
739 | rdev->num_running_ifaces += num; | |
740 | if (iftype == NL80211_IFTYPE_MONITOR) | |
741 | rdev->num_running_monitor_ifaces += num; | |
dbbae26a MK |
742 | } |
743 | ||
81256969 | 744 | void cfg80211_leave(struct cfg80211_registered_device *rdev, |
5fe231e8 | 745 | struct wireless_dev *wdev) |
81256969 SG |
746 | { |
747 | struct net_device *dev = wdev->netdev; | |
748 | ||
749 | switch (wdev->iftype) { | |
750 | case NL80211_IFTYPE_ADHOC: | |
751 | cfg80211_leave_ibss(rdev, dev, true); | |
752 | break; | |
753 | case NL80211_IFTYPE_P2P_CLIENT: | |
754 | case NL80211_IFTYPE_STATION: | |
81256969 | 755 | __cfg80211_stop_sched_scan(rdev, false); |
81256969 SG |
756 | |
757 | wdev_lock(wdev); | |
758 | #ifdef CONFIG_CFG80211_WEXT | |
759 | kfree(wdev->wext.ie); | |
760 | wdev->wext.ie = NULL; | |
761 | wdev->wext.ie_len = 0; | |
762 | wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC; | |
763 | #endif | |
83739b03 JB |
764 | cfg80211_disconnect(rdev, dev, |
765 | WLAN_REASON_DEAUTH_LEAVING, true); | |
81256969 SG |
766 | wdev_unlock(wdev); |
767 | break; | |
768 | case NL80211_IFTYPE_MESH_POINT: | |
769 | cfg80211_leave_mesh(rdev, dev); | |
770 | break; | |
771 | case NL80211_IFTYPE_AP: | |
772 | cfg80211_stop_ap(rdev, dev); | |
773 | break; | |
774 | default: | |
775 | break; | |
776 | } | |
777 | ||
778 | wdev->beacon_interval = 0; | |
779 | } | |
780 | ||
c4f60846 | 781 | static int cfg80211_netdev_notifier_call(struct notifier_block *nb, |
704232c2 JB |
782 | unsigned long state, |
783 | void *ndev) | |
784 | { | |
785 | struct net_device *dev = ndev; | |
2a783c13 | 786 | struct wireless_dev *wdev = dev->ieee80211_ptr; |
704232c2 | 787 | struct cfg80211_registered_device *rdev; |
7527a782 | 788 | int ret; |
704232c2 | 789 | |
2a783c13 | 790 | if (!wdev) |
1f87f7d3 | 791 | return NOTIFY_DONE; |
704232c2 | 792 | |
2a783c13 | 793 | rdev = wiphy_to_dev(wdev->wiphy); |
704232c2 | 794 | |
2a783c13 | 795 | WARN_ON(wdev->iftype == NL80211_IFTYPE_UNSPECIFIED); |
60719ffd | 796 | |
704232c2 | 797 | switch (state) { |
053a93dd MH |
798 | case NETDEV_POST_INIT: |
799 | SET_NETDEV_DEVTYPE(dev, &wiphy_type); | |
800 | break; | |
704232c2 | 801 | case NETDEV_REGISTER: |
0ff6ce7b JB |
802 | /* |
803 | * NB: cannot take rdev->mtx here because this may be | |
804 | * called within code protected by it when interfaces | |
805 | * are added with nl80211. | |
806 | */ | |
667503dd JB |
807 | mutex_init(&wdev->mtx); |
808 | INIT_LIST_HEAD(&wdev->event_list); | |
809 | spin_lock_init(&wdev->event_lock); | |
2e161f78 JB |
810 | INIT_LIST_HEAD(&wdev->mgmt_registrations); |
811 | spin_lock_init(&wdev->mgmt_registrations_lock); | |
026331c4 | 812 | |
89a54e48 JB |
813 | wdev->identifier = ++rdev->wdev_id; |
814 | list_add_rcu(&wdev->list, &rdev->wdev_list); | |
f5ea9120 | 815 | rdev->devlist_generation++; |
463d0183 JB |
816 | /* can only change netns with wiphy */ |
817 | dev->features |= NETIF_F_NETNS_LOCAL; | |
818 | ||
704232c2 JB |
819 | if (sysfs_create_link(&dev->dev.kobj, &rdev->wiphy.dev.kobj, |
820 | "phy80211")) { | |
e9c0268f | 821 | pr_err("failed to add phy80211 symlink to netdev!\n"); |
704232c2 | 822 | } |
2a783c13 | 823 | wdev->netdev = dev; |
b23aa676 | 824 | wdev->sme_state = CFG80211_SME_IDLE; |
3d23e349 | 825 | #ifdef CONFIG_CFG80211_WEXT |
2a783c13 JB |
826 | wdev->wext.default_key = -1; |
827 | wdev->wext.default_mgmt_key = -1; | |
f2129354 | 828 | wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC; |
ffb9eb3d KV |
829 | #endif |
830 | ||
5be83de5 | 831 | if (wdev->wiphy->flags & WIPHY_FLAG_PS_ON_BY_DEFAULT) |
ffb9eb3d | 832 | wdev->ps = true; |
5be83de5 | 833 | else |
ffb9eb3d | 834 | wdev->ps = false; |
9043f3b8 JO |
835 | /* allow mac80211 to determine the timeout */ |
836 | wdev->ps_timeout = -1; | |
ffb9eb3d | 837 | |
d07d7507 | 838 | netdev_set_default_ethtool_ops(dev, &cfg80211_ethtool_ops); |
ad4bb6f8 JB |
839 | |
840 | if ((wdev->iftype == NL80211_IFTYPE_STATION || | |
074ac8df | 841 | wdev->iftype == NL80211_IFTYPE_P2P_CLIENT || |
ad4bb6f8 JB |
842 | wdev->iftype == NL80211_IFTYPE_ADHOC) && !wdev->use_4addr) |
843 | dev->priv_flags |= IFF_DONT_BRIDGE; | |
704232c2 | 844 | break; |
04a773ad | 845 | case NETDEV_GOING_DOWN: |
81256969 | 846 | cfg80211_leave(rdev, wdev); |
01a0ac41 JB |
847 | break; |
848 | case NETDEV_DOWN: | |
dbbae26a | 849 | cfg80211_update_iface_num(rdev, wdev->iftype, -1); |
5fe231e8 JB |
850 | if (rdev->scan_req && rdev->scan_req->wdev == wdev) { |
851 | if (WARN_ON(!rdev->scan_req->notified)) | |
852 | rdev->scan_req->aborted = true; | |
853 | ___cfg80211_scan_done(rdev, true); | |
854 | } | |
855 | ||
856 | if (WARN_ON(rdev->sched_scan_req && | |
857 | rdev->sched_scan_req->dev == wdev->netdev)) { | |
858 | __cfg80211_stop_sched_scan(rdev, false); | |
859 | } | |
860 | ||
861 | rdev->opencount--; | |
862 | wake_up(&rdev->dev_wait); | |
04a773ad JB |
863 | break; |
864 | case NETDEV_UP: | |
4290cb4b | 865 | cfg80211_update_iface_num(rdev, wdev->iftype, 1); |
667503dd | 866 | wdev_lock(wdev); |
f2129354 | 867 | switch (wdev->iftype) { |
29cbe68c | 868 | #ifdef CONFIG_CFG80211_WEXT |
f2129354 | 869 | case NL80211_IFTYPE_ADHOC: |
fffd0934 | 870 | cfg80211_ibss_wext_join(rdev, wdev); |
04a773ad | 871 | break; |
f2129354 | 872 | case NL80211_IFTYPE_STATION: |
fffd0934 | 873 | cfg80211_mgd_wext_connect(rdev, wdev); |
f2129354 | 874 | break; |
29cbe68c | 875 | #endif |
c80d545d | 876 | #ifdef CONFIG_MAC80211_MESH |
29cbe68c | 877 | case NL80211_IFTYPE_MESH_POINT: |
c80d545d JC |
878 | { |
879 | /* backward compat code... */ | |
880 | struct mesh_setup setup; | |
881 | memcpy(&setup, &default_mesh_setup, | |
882 | sizeof(setup)); | |
883 | /* back compat only needed for mesh_id */ | |
884 | setup.mesh_id = wdev->ssid; | |
885 | setup.mesh_id_len = wdev->mesh_id_up_len; | |
886 | if (wdev->mesh_id_up_len) | |
887 | __cfg80211_join_mesh(rdev, dev, | |
888 | &setup, | |
889 | &default_mesh_config); | |
890 | break; | |
891 | } | |
892 | #endif | |
f2129354 | 893 | default: |
04a773ad | 894 | break; |
f2129354 | 895 | } |
667503dd | 896 | wdev_unlock(wdev); |
ad002395 | 897 | rdev->opencount++; |
bf6a0579 JO |
898 | |
899 | /* | |
900 | * Configure power management to the driver here so that its | |
901 | * correctly set also after interface type changes etc. | |
902 | */ | |
5966f2dd EP |
903 | if ((wdev->iftype == NL80211_IFTYPE_STATION || |
904 | wdev->iftype == NL80211_IFTYPE_P2P_CLIENT) && | |
bf6a0579 | 905 | rdev->ops->set_power_mgmt) |
e35e4d28 HG |
906 | if (rdev_set_power_mgmt(rdev, dev, wdev->ps, |
907 | wdev->ps_timeout)) { | |
bf6a0579 JO |
908 | /* assume this means it's off */ |
909 | wdev->ps = false; | |
910 | } | |
2a783c13 | 911 | break; |
704232c2 | 912 | case NETDEV_UNREGISTER: |
e40cbdac JB |
913 | /* |
914 | * It is possible to get NETDEV_UNREGISTER | |
915 | * multiple times. To detect that, check | |
916 | * that the interface is still on the list | |
917 | * of registered interfaces, and only then | |
918 | * remove and clean it up. | |
919 | */ | |
2a783c13 | 920 | if (!list_empty(&wdev->list)) { |
704232c2 | 921 | sysfs_remove_link(&dev->dev.kobj, "phy80211"); |
5f2aa25e | 922 | list_del_rcu(&wdev->list); |
f5ea9120 | 923 | rdev->devlist_generation++; |
2e161f78 | 924 | cfg80211_mlme_purge_registrations(wdev); |
3d23e349 | 925 | #ifdef CONFIG_CFG80211_WEXT |
e40cbdac | 926 | kfree(wdev->wext.keys); |
fffd0934 | 927 | #endif |
e40cbdac | 928 | } |
5f2aa25e JB |
929 | /* |
930 | * synchronise (so that we won't find this netdev | |
931 | * from other code any more) and then clear the list | |
932 | * head so that the above code can safely check for | |
933 | * !list_empty() to avoid double-cleanup. | |
934 | */ | |
935 | synchronize_rcu(); | |
936 | INIT_LIST_HEAD(&wdev->list); | |
1f6fc43e DD |
937 | /* |
938 | * Ensure that all events have been processed and | |
939 | * freed. | |
940 | */ | |
941 | cfg80211_process_wdev_events(wdev); | |
704232c2 | 942 | break; |
1f87f7d3 | 943 | case NETDEV_PRE_UP: |
0b20633d JB |
944 | if (!(wdev->wiphy->interface_modes & BIT(wdev->iftype))) |
945 | return notifier_from_errno(-EOPNOTSUPP); | |
1f87f7d3 JB |
946 | if (rfkill_blocked(rdev->rfkill)) |
947 | return notifier_from_errno(-ERFKILL); | |
7527a782 JB |
948 | ret = cfg80211_can_add_interface(rdev, wdev->iftype); |
949 | if (ret) | |
950 | return notifier_from_errno(ret); | |
1f87f7d3 | 951 | break; |
704232c2 JB |
952 | } |
953 | ||
1f87f7d3 | 954 | return NOTIFY_DONE; |
704232c2 JB |
955 | } |
956 | ||
957 | static struct notifier_block cfg80211_netdev_notifier = { | |
958 | .notifier_call = cfg80211_netdev_notifier_call, | |
959 | }; | |
960 | ||
463d0183 JB |
961 | static void __net_exit cfg80211_pernet_exit(struct net *net) |
962 | { | |
963 | struct cfg80211_registered_device *rdev; | |
964 | ||
965 | rtnl_lock(); | |
463d0183 JB |
966 | list_for_each_entry(rdev, &cfg80211_rdev_list, list) { |
967 | if (net_eq(wiphy_net(&rdev->wiphy), net)) | |
968 | WARN_ON(cfg80211_switch_netns(rdev, &init_net)); | |
969 | } | |
463d0183 JB |
970 | rtnl_unlock(); |
971 | } | |
972 | ||
973 | static struct pernet_operations cfg80211_pernet_ops = { | |
974 | .exit = cfg80211_pernet_exit, | |
975 | }; | |
976 | ||
977 | static int __init cfg80211_init(void) | |
704232c2 | 978 | { |
b2e1b302 LR |
979 | int err; |
980 | ||
463d0183 JB |
981 | err = register_pernet_device(&cfg80211_pernet_ops); |
982 | if (err) | |
983 | goto out_fail_pernet; | |
984 | ||
b2e1b302 | 985 | err = wiphy_sysfs_init(); |
704232c2 JB |
986 | if (err) |
987 | goto out_fail_sysfs; | |
988 | ||
989 | err = register_netdevice_notifier(&cfg80211_netdev_notifier); | |
990 | if (err) | |
991 | goto out_fail_notifier; | |
992 | ||
55682965 JB |
993 | err = nl80211_init(); |
994 | if (err) | |
995 | goto out_fail_nl80211; | |
996 | ||
704232c2 JB |
997 | ieee80211_debugfs_dir = debugfs_create_dir("ieee80211", NULL); |
998 | ||
b2e1b302 LR |
999 | err = regulatory_init(); |
1000 | if (err) | |
1001 | goto out_fail_reg; | |
1002 | ||
e60d7443 | 1003 | cfg80211_wq = create_singlethread_workqueue("cfg80211"); |
f00f188f WY |
1004 | if (!cfg80211_wq) { |
1005 | err = -ENOMEM; | |
e60d7443 | 1006 | goto out_fail_wq; |
f00f188f | 1007 | } |
e60d7443 | 1008 | |
704232c2 JB |
1009 | return 0; |
1010 | ||
e60d7443 AB |
1011 | out_fail_wq: |
1012 | regulatory_exit(); | |
b2e1b302 LR |
1013 | out_fail_reg: |
1014 | debugfs_remove(ieee80211_debugfs_dir); | |
55682965 JB |
1015 | out_fail_nl80211: |
1016 | unregister_netdevice_notifier(&cfg80211_netdev_notifier); | |
704232c2 JB |
1017 | out_fail_notifier: |
1018 | wiphy_sysfs_exit(); | |
1019 | out_fail_sysfs: | |
463d0183 JB |
1020 | unregister_pernet_device(&cfg80211_pernet_ops); |
1021 | out_fail_pernet: | |
704232c2 JB |
1022 | return err; |
1023 | } | |
3a462465 | 1024 | subsys_initcall(cfg80211_init); |
704232c2 | 1025 | |
f884e387 | 1026 | static void __exit cfg80211_exit(void) |
704232c2 JB |
1027 | { |
1028 | debugfs_remove(ieee80211_debugfs_dir); | |
55682965 | 1029 | nl80211_exit(); |
704232c2 JB |
1030 | unregister_netdevice_notifier(&cfg80211_netdev_notifier); |
1031 | wiphy_sysfs_exit(); | |
b2e1b302 | 1032 | regulatory_exit(); |
463d0183 | 1033 | unregister_pernet_device(&cfg80211_pernet_ops); |
e60d7443 | 1034 | destroy_workqueue(cfg80211_wq); |
704232c2 JB |
1035 | } |
1036 | module_exit(cfg80211_exit); |