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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 | |
9b881963 JB |
304 | /* atomic_inc_return makes it start at 1, make it start at 0 */ |
305 | rdev->wiphy_idx--; | |
306 | ||
7623225f JB |
307 | /* give it a proper name */ |
308 | dev_set_name(&rdev->wiphy.dev, PHY_NAME "%d", rdev->wiphy_idx); | |
309 | ||
89a54e48 | 310 | INIT_LIST_HEAD(&rdev->wdev_list); |
37c73b5f BG |
311 | INIT_LIST_HEAD(&rdev->beacon_registrations); |
312 | spin_lock_init(&rdev->beacon_registrations_lock); | |
79c97e97 JB |
313 | spin_lock_init(&rdev->bss_lock); |
314 | INIT_LIST_HEAD(&rdev->bss_list); | |
315 | INIT_WORK(&rdev->scan_done_wk, __cfg80211_scan_done); | |
807f8a8c | 316 | INIT_WORK(&rdev->sched_scan_results_wk, __cfg80211_sched_scan_results); |
04f39047 SW |
317 | INIT_DELAYED_WORK(&rdev->dfs_update_channels_wk, |
318 | cfg80211_dfs_channels_update_work); | |
3d23e349 JB |
319 | #ifdef CONFIG_CFG80211_WEXT |
320 | rdev->wiphy.wext = &cfg80211_wext_handler; | |
321 | #endif | |
322 | ||
79c97e97 JB |
323 | device_initialize(&rdev->wiphy.dev); |
324 | rdev->wiphy.dev.class = &ieee80211_class; | |
325 | rdev->wiphy.dev.platform_data = rdev; | |
326 | ||
5be83de5 JB |
327 | #ifdef CONFIG_CFG80211_DEFAULT_PS |
328 | rdev->wiphy.flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT; | |
329 | #endif | |
16cb9d42 | 330 | |
463d0183 JB |
331 | wiphy_net_set(&rdev->wiphy, &init_net); |
332 | ||
79c97e97 JB |
333 | rdev->rfkill_ops.set_block = cfg80211_rfkill_set_block; |
334 | rdev->rfkill = rfkill_alloc(dev_name(&rdev->wiphy.dev), | |
335 | &rdev->wiphy.dev, RFKILL_TYPE_WLAN, | |
336 | &rdev->rfkill_ops, rdev); | |
337 | ||
338 | if (!rdev->rfkill) { | |
339 | kfree(rdev); | |
1f87f7d3 JB |
340 | return NULL; |
341 | } | |
342 | ||
79c97e97 JB |
343 | INIT_WORK(&rdev->rfkill_sync, cfg80211_rfkill_sync_work); |
344 | INIT_WORK(&rdev->conn_work, cfg80211_conn_work); | |
345 | INIT_WORK(&rdev->event_work, cfg80211_event_work); | |
1f87f7d3 | 346 | |
ad002395 JB |
347 | init_waitqueue_head(&rdev->dev_wait); |
348 | ||
b9a5f8ca JM |
349 | /* |
350 | * Initialize wiphy parameters to IEEE 802.11 MIB default values. | |
351 | * Fragmentation and RTS threshold are disabled by default with the | |
352 | * special -1 value. | |
353 | */ | |
79c97e97 JB |
354 | rdev->wiphy.retry_short = 7; |
355 | rdev->wiphy.retry_long = 4; | |
356 | rdev->wiphy.frag_threshold = (u32) -1; | |
357 | rdev->wiphy.rts_threshold = (u32) -1; | |
81077e82 | 358 | rdev->wiphy.coverage_class = 0; |
b9a5f8ca | 359 | |
d0ae708d | 360 | rdev->wiphy.features = NL80211_FEATURE_SCAN_FLUSH; |
15d6030b | 361 | |
79c97e97 | 362 | return &rdev->wiphy; |
704232c2 JB |
363 | } |
364 | EXPORT_SYMBOL(wiphy_new); | |
365 | ||
7527a782 JB |
366 | static int wiphy_verify_combinations(struct wiphy *wiphy) |
367 | { | |
368 | const struct ieee80211_iface_combination *c; | |
369 | int i, j; | |
370 | ||
7527a782 JB |
371 | for (i = 0; i < wiphy->n_iface_combinations; i++) { |
372 | u32 cnt = 0; | |
373 | u16 all_iftypes = 0; | |
374 | ||
375 | c = &wiphy->iface_combinations[i]; | |
376 | ||
11c4a075 SW |
377 | /* |
378 | * Combinations with just one interface aren't real, | |
379 | * however we make an exception for DFS. | |
380 | */ | |
381 | if (WARN_ON((c->max_interfaces < 2) && !c->radar_detect_widths)) | |
7527a782 JB |
382 | return -EINVAL; |
383 | ||
384 | /* Need at least one channel */ | |
385 | if (WARN_ON(!c->num_different_channels)) | |
386 | return -EINVAL; | |
387 | ||
d4e50c59 MK |
388 | /* |
389 | * Put a sane limit on maximum number of different | |
390 | * channels to simplify channel accounting code. | |
391 | */ | |
392 | if (WARN_ON(c->num_different_channels > | |
393 | CFG80211_MAX_NUM_DIFFERENT_CHANNELS)) | |
394 | return -EINVAL; | |
395 | ||
11c4a075 SW |
396 | /* DFS only works on one channel. */ |
397 | if (WARN_ON(c->radar_detect_widths && | |
398 | (c->num_different_channels > 1))) | |
399 | return -EINVAL; | |
400 | ||
7527a782 JB |
401 | if (WARN_ON(!c->n_limits)) |
402 | return -EINVAL; | |
403 | ||
404 | for (j = 0; j < c->n_limits; j++) { | |
405 | u16 types = c->limits[j].types; | |
406 | ||
407 | /* | |
408 | * interface types shouldn't overlap, this is | |
409 | * used in cfg80211_can_change_interface() | |
410 | */ | |
411 | if (WARN_ON(types & all_iftypes)) | |
412 | return -EINVAL; | |
413 | all_iftypes |= types; | |
414 | ||
415 | if (WARN_ON(!c->limits[j].max)) | |
416 | return -EINVAL; | |
417 | ||
418 | /* Shouldn't list software iftypes in combinations! */ | |
419 | if (WARN_ON(wiphy->software_iftypes & types)) | |
420 | return -EINVAL; | |
421 | ||
98104fde JB |
422 | /* Only a single P2P_DEVICE can be allowed */ |
423 | if (WARN_ON(types & BIT(NL80211_IFTYPE_P2P_DEVICE) && | |
424 | c->limits[j].max > 1)) | |
425 | return -EINVAL; | |
426 | ||
7527a782 JB |
427 | cnt += c->limits[j].max; |
428 | /* | |
429 | * Don't advertise an unsupported type | |
430 | * in a combination. | |
431 | */ | |
432 | if (WARN_ON((wiphy->interface_modes & types) != types)) | |
433 | return -EINVAL; | |
434 | } | |
435 | ||
436 | /* You can't even choose that many! */ | |
437 | if (WARN_ON(cnt < c->max_interfaces)) | |
438 | return -EINVAL; | |
439 | } | |
440 | ||
441 | return 0; | |
442 | } | |
443 | ||
704232c2 JB |
444 | int wiphy_register(struct wiphy *wiphy) |
445 | { | |
79c97e97 | 446 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
704232c2 | 447 | int res; |
8318d78a JB |
448 | enum ieee80211_band band; |
449 | struct ieee80211_supported_band *sband; | |
450 | bool have_band = false; | |
451 | int i; | |
f59ac048 LR |
452 | u16 ifmodes = wiphy->interface_modes; |
453 | ||
dfb89c56 | 454 | #ifdef CONFIG_PM |
964dc9e2 JB |
455 | if (WARN_ON(wiphy->wowlan && |
456 | (wiphy->wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) && | |
457 | !(wiphy->wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY))) | |
458 | return -EINVAL; | |
459 | if (WARN_ON(wiphy->wowlan && | |
460 | !wiphy->wowlan->flags && !wiphy->wowlan->n_patterns && | |
461 | !wiphy->wowlan->tcp)) | |
77dbbb13 | 462 | return -EINVAL; |
dfb89c56 | 463 | #endif |
77dbbb13 | 464 | |
562a7480 JB |
465 | if (WARN_ON(wiphy->ap_sme_capa && |
466 | !(wiphy->flags & WIPHY_FLAG_HAVE_AP_SME))) | |
467 | return -EINVAL; | |
468 | ||
ef15aac6 JB |
469 | if (WARN_ON(wiphy->addresses && !wiphy->n_addresses)) |
470 | return -EINVAL; | |
471 | ||
472 | if (WARN_ON(wiphy->addresses && | |
473 | !is_zero_ether_addr(wiphy->perm_addr) && | |
474 | memcmp(wiphy->perm_addr, wiphy->addresses[0].addr, | |
475 | ETH_ALEN))) | |
476 | return -EINVAL; | |
477 | ||
77765eaf VT |
478 | if (WARN_ON(wiphy->max_acl_mac_addrs && |
479 | (!(wiphy->flags & WIPHY_FLAG_HAVE_AP_SME) || | |
480 | !rdev->ops->set_mac_acl))) | |
481 | return -EINVAL; | |
482 | ||
ef15aac6 JB |
483 | if (wiphy->addresses) |
484 | memcpy(wiphy->perm_addr, wiphy->addresses[0].addr, ETH_ALEN); | |
485 | ||
f59ac048 LR |
486 | /* sanity check ifmodes */ |
487 | WARN_ON(!ifmodes); | |
2e161f78 | 488 | ifmodes &= ((1 << NUM_NL80211_IFTYPES) - 1) & ~1; |
f59ac048 LR |
489 | if (WARN_ON(ifmodes != wiphy->interface_modes)) |
490 | wiphy->interface_modes = ifmodes; | |
8318d78a | 491 | |
7527a782 JB |
492 | res = wiphy_verify_combinations(wiphy); |
493 | if (res) | |
494 | return res; | |
495 | ||
8318d78a JB |
496 | /* sanity check supported bands/channels */ |
497 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { | |
498 | sband = wiphy->bands[band]; | |
499 | if (!sband) | |
500 | continue; | |
501 | ||
502 | sband->band = band; | |
3a0c52a6 VK |
503 | if (WARN_ON(!sband->n_channels)) |
504 | return -EINVAL; | |
505 | /* | |
506 | * on 60gHz band, there are no legacy rates, so | |
507 | * n_bitrates is 0 | |
508 | */ | |
509 | if (WARN_ON(band != IEEE80211_BAND_60GHZ && | |
510 | !sband->n_bitrates)) | |
881d948c JB |
511 | return -EINVAL; |
512 | ||
40db6c77 AK |
513 | /* |
514 | * Since cfg80211_disable_40mhz_24ghz is global, we can | |
515 | * modify the sband's ht data even if the driver uses a | |
516 | * global structure for that. | |
517 | */ | |
518 | if (cfg80211_disable_40mhz_24ghz && | |
519 | band == IEEE80211_BAND_2GHZ && | |
520 | sband->ht_cap.ht_supported) { | |
521 | sband->ht_cap.cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; | |
522 | sband->ht_cap.cap &= ~IEEE80211_HT_CAP_SGI_40; | |
523 | } | |
524 | ||
881d948c JB |
525 | /* |
526 | * Since we use a u32 for rate bitmaps in | |
527 | * ieee80211_get_response_rate, we cannot | |
528 | * have more than 32 legacy rates. | |
529 | */ | |
530 | if (WARN_ON(sband->n_bitrates > 32)) | |
8318d78a | 531 | return -EINVAL; |
8318d78a JB |
532 | |
533 | for (i = 0; i < sband->n_channels; i++) { | |
534 | sband->channels[i].orig_flags = | |
535 | sband->channels[i].flags; | |
c4a9fafc | 536 | sband->channels[i].orig_mag = INT_MAX; |
8318d78a JB |
537 | sband->channels[i].orig_mpwr = |
538 | sband->channels[i].max_power; | |
539 | sband->channels[i].band = band; | |
540 | } | |
541 | ||
542 | have_band = true; | |
543 | } | |
544 | ||
545 | if (!have_band) { | |
546 | WARN_ON(1); | |
547 | return -EINVAL; | |
548 | } | |
549 | ||
dfb89c56 | 550 | #ifdef CONFIG_PM |
964dc9e2 JB |
551 | if (WARN_ON(rdev->wiphy.wowlan && rdev->wiphy.wowlan->n_patterns && |
552 | (!rdev->wiphy.wowlan->pattern_min_len || | |
553 | rdev->wiphy.wowlan->pattern_min_len > | |
554 | rdev->wiphy.wowlan->pattern_max_len))) | |
555 | return -EINVAL; | |
dfb89c56 | 556 | #endif |
ff1b6e69 | 557 | |
8318d78a JB |
558 | /* check and set up bitrates */ |
559 | ieee80211_set_bitrate_flags(wiphy); | |
560 | ||
5a652052 | 561 | |
79c97e97 | 562 | res = device_add(&rdev->wiphy.dev); |
256c90de JB |
563 | if (res) |
564 | return res; | |
565 | ||
566 | res = rfkill_register(rdev->rfkill); | |
c3d34d5d | 567 | if (res) { |
256c90de | 568 | device_del(&rdev->wiphy.dev); |
c3d34d5d JL |
569 | return res; |
570 | } | |
1f87f7d3 | 571 | |
256c90de | 572 | rtnl_lock(); |
2f0accc1 | 573 | /* set up regulatory info */ |
57b5ce07 | 574 | wiphy_regulatory_register(wiphy); |
2f0accc1 | 575 | |
5f2aa25e | 576 | list_add_rcu(&rdev->list, &cfg80211_rdev_list); |
f5ea9120 | 577 | cfg80211_rdev_list_generation++; |
704232c2 JB |
578 | |
579 | /* add to debugfs */ | |
79c97e97 JB |
580 | rdev->wiphy.debugfsdir = |
581 | debugfs_create_dir(wiphy_name(&rdev->wiphy), | |
704232c2 | 582 | ieee80211_debugfs_dir); |
79c97e97 JB |
583 | if (IS_ERR(rdev->wiphy.debugfsdir)) |
584 | rdev->wiphy.debugfsdir = NULL; | |
704232c2 | 585 | |
5be83de5 | 586 | if (wiphy->flags & WIPHY_FLAG_CUSTOM_REGULATORY) { |
73d54c9e LR |
587 | struct regulatory_request request; |
588 | ||
589 | request.wiphy_idx = get_wiphy_idx(wiphy); | |
590 | request.initiator = NL80211_REGDOM_SET_BY_DRIVER; | |
591 | request.alpha2[0] = '9'; | |
592 | request.alpha2[1] = '9'; | |
593 | ||
594 | nl80211_send_reg_change_event(&request); | |
595 | } | |
596 | ||
79c97e97 | 597 | cfg80211_debugfs_rdev_add(rdev); |
1ac61302 | 598 | |
ecb44335 SG |
599 | rdev->wiphy.registered = true; |
600 | rtnl_unlock(); | |
2f0accc1 | 601 | return 0; |
704232c2 JB |
602 | } |
603 | EXPORT_SYMBOL(wiphy_register); | |
604 | ||
1f87f7d3 JB |
605 | void wiphy_rfkill_start_polling(struct wiphy *wiphy) |
606 | { | |
79c97e97 | 607 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
1f87f7d3 | 608 | |
79c97e97 | 609 | if (!rdev->ops->rfkill_poll) |
1f87f7d3 | 610 | return; |
79c97e97 JB |
611 | rdev->rfkill_ops.poll = cfg80211_rfkill_poll; |
612 | rfkill_resume_polling(rdev->rfkill); | |
1f87f7d3 JB |
613 | } |
614 | EXPORT_SYMBOL(wiphy_rfkill_start_polling); | |
615 | ||
616 | void wiphy_rfkill_stop_polling(struct wiphy *wiphy) | |
617 | { | |
79c97e97 | 618 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
1f87f7d3 | 619 | |
79c97e97 | 620 | rfkill_pause_polling(rdev->rfkill); |
1f87f7d3 JB |
621 | } |
622 | EXPORT_SYMBOL(wiphy_rfkill_stop_polling); | |
623 | ||
704232c2 JB |
624 | void wiphy_unregister(struct wiphy *wiphy) |
625 | { | |
79c97e97 | 626 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
704232c2 | 627 | |
ad002395 JB |
628 | wait_event(rdev->dev_wait, ({ |
629 | int __count; | |
5fe231e8 | 630 | rtnl_lock(); |
ad002395 | 631 | __count = rdev->opencount; |
5fe231e8 | 632 | rtnl_unlock(); |
c4f60846 | 633 | __count == 0; })); |
ad002395 | 634 | |
256c90de JB |
635 | rfkill_unregister(rdev->rfkill); |
636 | ||
5fe231e8 JB |
637 | rtnl_lock(); |
638 | rdev->wiphy.registered = false; | |
639 | ||
89a54e48 | 640 | BUG_ON(!list_empty(&rdev->wdev_list)); |
ad002395 JB |
641 | |
642 | /* | |
643 | * First remove the hardware from everywhere, this makes | |
644 | * it impossible to find from userspace. | |
645 | */ | |
7bcfaf2f | 646 | debugfs_remove_recursive(rdev->wiphy.debugfsdir); |
5f2aa25e JB |
647 | list_del_rcu(&rdev->list); |
648 | synchronize_rcu(); | |
f16bfc1c | 649 | |
bfead080 LR |
650 | /* |
651 | * If this device got a regulatory hint tell core its | |
652 | * free to listen now to a new shiny device regulatory hint | |
653 | */ | |
654 | wiphy_regulatory_deregister(wiphy); | |
3f2355cb | 655 | |
f5ea9120 | 656 | cfg80211_rdev_list_generation++; |
79c97e97 | 657 | device_del(&rdev->wiphy.dev); |
704232c2 | 658 | |
5fe231e8 | 659 | rtnl_unlock(); |
6682588a | 660 | |
36e6fea8 | 661 | flush_work(&rdev->scan_done_wk); |
6682588a | 662 | cancel_work_sync(&rdev->conn_work); |
6682588a | 663 | flush_work(&rdev->event_work); |
04f39047 | 664 | cancel_delayed_work_sync(&rdev->dfs_update_channels_wk); |
6d52563f | 665 | |
6abb9cb9 JB |
666 | #ifdef CONFIG_PM |
667 | if (rdev->wiphy.wowlan_config && rdev->ops->set_wakeup) | |
e35e4d28 | 668 | rdev_set_wakeup(rdev, false); |
6abb9cb9 | 669 | #endif |
6d52563f | 670 | cfg80211_rdev_free_wowlan(rdev); |
704232c2 JB |
671 | } |
672 | EXPORT_SYMBOL(wiphy_unregister); | |
673 | ||
79c97e97 | 674 | void cfg80211_dev_free(struct cfg80211_registered_device *rdev) |
704232c2 | 675 | { |
2a519311 | 676 | struct cfg80211_internal_bss *scan, *tmp; |
37c73b5f | 677 | struct cfg80211_beacon_registration *reg, *treg; |
79c97e97 | 678 | rfkill_destroy(rdev->rfkill); |
37c73b5f BG |
679 | list_for_each_entry_safe(reg, treg, &rdev->beacon_registrations, list) { |
680 | list_del(®->list); | |
681 | kfree(reg); | |
682 | } | |
79c97e97 | 683 | list_for_each_entry_safe(scan, tmp, &rdev->bss_list, list) |
5b112d3d | 684 | cfg80211_put_bss(&rdev->wiphy, &scan->pub); |
79c97e97 | 685 | kfree(rdev); |
704232c2 JB |
686 | } |
687 | ||
688 | void wiphy_free(struct wiphy *wiphy) | |
689 | { | |
690 | put_device(&wiphy->dev); | |
691 | } | |
692 | EXPORT_SYMBOL(wiphy_free); | |
693 | ||
1f87f7d3 JB |
694 | void wiphy_rfkill_set_hw_state(struct wiphy *wiphy, bool blocked) |
695 | { | |
79c97e97 | 696 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); |
1f87f7d3 | 697 | |
79c97e97 JB |
698 | if (rfkill_set_hw_state(rdev->rfkill, blocked)) |
699 | schedule_work(&rdev->rfkill_sync); | |
1f87f7d3 JB |
700 | } |
701 | EXPORT_SYMBOL(wiphy_rfkill_set_hw_state); | |
702 | ||
98104fde JB |
703 | void cfg80211_unregister_wdev(struct wireless_dev *wdev) |
704 | { | |
705 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); | |
706 | ||
707 | ASSERT_RTNL(); | |
708 | ||
709 | if (WARN_ON(wdev->netdev)) | |
710 | return; | |
711 | ||
98104fde JB |
712 | list_del_rcu(&wdev->list); |
713 | rdev->devlist_generation++; | |
714 | ||
715 | switch (wdev->iftype) { | |
716 | case NL80211_IFTYPE_P2P_DEVICE: | |
f9f47529 | 717 | cfg80211_stop_p2p_device(rdev, wdev); |
98104fde JB |
718 | break; |
719 | default: | |
720 | WARN_ON_ONCE(1); | |
721 | break; | |
722 | } | |
98104fde JB |
723 | } |
724 | EXPORT_SYMBOL(cfg80211_unregister_wdev); | |
725 | ||
053a93dd MH |
726 | static struct device_type wiphy_type = { |
727 | .name = "wlan", | |
728 | }; | |
729 | ||
dbbae26a MK |
730 | void cfg80211_update_iface_num(struct cfg80211_registered_device *rdev, |
731 | enum nl80211_iftype iftype, int num) | |
732 | { | |
c5a7e582 | 733 | ASSERT_RTNL(); |
dbbae26a MK |
734 | |
735 | rdev->num_running_ifaces += num; | |
736 | if (iftype == NL80211_IFTYPE_MONITOR) | |
737 | rdev->num_running_monitor_ifaces += num; | |
dbbae26a MK |
738 | } |
739 | ||
81256969 | 740 | void cfg80211_leave(struct cfg80211_registered_device *rdev, |
5fe231e8 | 741 | struct wireless_dev *wdev) |
81256969 SG |
742 | { |
743 | struct net_device *dev = wdev->netdev; | |
744 | ||
745 | switch (wdev->iftype) { | |
746 | case NL80211_IFTYPE_ADHOC: | |
747 | cfg80211_leave_ibss(rdev, dev, true); | |
748 | break; | |
749 | case NL80211_IFTYPE_P2P_CLIENT: | |
750 | case NL80211_IFTYPE_STATION: | |
81256969 | 751 | __cfg80211_stop_sched_scan(rdev, false); |
81256969 SG |
752 | |
753 | wdev_lock(wdev); | |
754 | #ifdef CONFIG_CFG80211_WEXT | |
755 | kfree(wdev->wext.ie); | |
756 | wdev->wext.ie = NULL; | |
757 | wdev->wext.ie_len = 0; | |
758 | wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC; | |
759 | #endif | |
83739b03 JB |
760 | cfg80211_disconnect(rdev, dev, |
761 | WLAN_REASON_DEAUTH_LEAVING, true); | |
81256969 SG |
762 | wdev_unlock(wdev); |
763 | break; | |
764 | case NL80211_IFTYPE_MESH_POINT: | |
765 | cfg80211_leave_mesh(rdev, dev); | |
766 | break; | |
767 | case NL80211_IFTYPE_AP: | |
768 | cfg80211_stop_ap(rdev, dev); | |
769 | break; | |
770 | default: | |
771 | break; | |
772 | } | |
773 | ||
774 | wdev->beacon_interval = 0; | |
775 | } | |
776 | ||
c4f60846 | 777 | static int cfg80211_netdev_notifier_call(struct notifier_block *nb, |
351638e7 | 778 | unsigned long state, void *ptr) |
704232c2 | 779 | { |
351638e7 | 780 | struct net_device *dev = netdev_notifier_info_to_dev(ptr); |
2a783c13 | 781 | struct wireless_dev *wdev = dev->ieee80211_ptr; |
704232c2 | 782 | struct cfg80211_registered_device *rdev; |
7527a782 | 783 | int ret; |
704232c2 | 784 | |
2a783c13 | 785 | if (!wdev) |
1f87f7d3 | 786 | return NOTIFY_DONE; |
704232c2 | 787 | |
2a783c13 | 788 | rdev = wiphy_to_dev(wdev->wiphy); |
704232c2 | 789 | |
2a783c13 | 790 | WARN_ON(wdev->iftype == NL80211_IFTYPE_UNSPECIFIED); |
60719ffd | 791 | |
704232c2 | 792 | switch (state) { |
053a93dd MH |
793 | case NETDEV_POST_INIT: |
794 | SET_NETDEV_DEVTYPE(dev, &wiphy_type); | |
795 | break; | |
704232c2 | 796 | case NETDEV_REGISTER: |
0ff6ce7b JB |
797 | /* |
798 | * NB: cannot take rdev->mtx here because this may be | |
799 | * called within code protected by it when interfaces | |
800 | * are added with nl80211. | |
801 | */ | |
667503dd JB |
802 | mutex_init(&wdev->mtx); |
803 | INIT_LIST_HEAD(&wdev->event_list); | |
804 | spin_lock_init(&wdev->event_lock); | |
2e161f78 JB |
805 | INIT_LIST_HEAD(&wdev->mgmt_registrations); |
806 | spin_lock_init(&wdev->mgmt_registrations_lock); | |
026331c4 | 807 | |
89a54e48 JB |
808 | wdev->identifier = ++rdev->wdev_id; |
809 | list_add_rcu(&wdev->list, &rdev->wdev_list); | |
f5ea9120 | 810 | rdev->devlist_generation++; |
463d0183 JB |
811 | /* can only change netns with wiphy */ |
812 | dev->features |= NETIF_F_NETNS_LOCAL; | |
813 | ||
704232c2 JB |
814 | if (sysfs_create_link(&dev->dev.kobj, &rdev->wiphy.dev.kobj, |
815 | "phy80211")) { | |
e9c0268f | 816 | pr_err("failed to add phy80211 symlink to netdev!\n"); |
704232c2 | 817 | } |
2a783c13 | 818 | wdev->netdev = dev; |
3d23e349 | 819 | #ifdef CONFIG_CFG80211_WEXT |
2a783c13 JB |
820 | wdev->wext.default_key = -1; |
821 | wdev->wext.default_mgmt_key = -1; | |
f2129354 | 822 | wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC; |
ffb9eb3d KV |
823 | #endif |
824 | ||
5be83de5 | 825 | if (wdev->wiphy->flags & WIPHY_FLAG_PS_ON_BY_DEFAULT) |
ffb9eb3d | 826 | wdev->ps = true; |
5be83de5 | 827 | else |
ffb9eb3d | 828 | wdev->ps = false; |
9043f3b8 JO |
829 | /* allow mac80211 to determine the timeout */ |
830 | wdev->ps_timeout = -1; | |
ffb9eb3d | 831 | |
d07d7507 | 832 | netdev_set_default_ethtool_ops(dev, &cfg80211_ethtool_ops); |
ad4bb6f8 JB |
833 | |
834 | if ((wdev->iftype == NL80211_IFTYPE_STATION || | |
074ac8df | 835 | wdev->iftype == NL80211_IFTYPE_P2P_CLIENT || |
ad4bb6f8 JB |
836 | wdev->iftype == NL80211_IFTYPE_ADHOC) && !wdev->use_4addr) |
837 | dev->priv_flags |= IFF_DONT_BRIDGE; | |
704232c2 | 838 | break; |
04a773ad | 839 | case NETDEV_GOING_DOWN: |
81256969 | 840 | cfg80211_leave(rdev, wdev); |
01a0ac41 JB |
841 | break; |
842 | case NETDEV_DOWN: | |
dbbae26a | 843 | cfg80211_update_iface_num(rdev, wdev->iftype, -1); |
5fe231e8 JB |
844 | if (rdev->scan_req && rdev->scan_req->wdev == wdev) { |
845 | if (WARN_ON(!rdev->scan_req->notified)) | |
846 | rdev->scan_req->aborted = true; | |
847 | ___cfg80211_scan_done(rdev, true); | |
848 | } | |
849 | ||
850 | if (WARN_ON(rdev->sched_scan_req && | |
851 | rdev->sched_scan_req->dev == wdev->netdev)) { | |
852 | __cfg80211_stop_sched_scan(rdev, false); | |
853 | } | |
854 | ||
855 | rdev->opencount--; | |
856 | wake_up(&rdev->dev_wait); | |
04a773ad JB |
857 | break; |
858 | case NETDEV_UP: | |
4290cb4b | 859 | cfg80211_update_iface_num(rdev, wdev->iftype, 1); |
667503dd | 860 | wdev_lock(wdev); |
f2129354 | 861 | switch (wdev->iftype) { |
29cbe68c | 862 | #ifdef CONFIG_CFG80211_WEXT |
f2129354 | 863 | case NL80211_IFTYPE_ADHOC: |
fffd0934 | 864 | cfg80211_ibss_wext_join(rdev, wdev); |
04a773ad | 865 | break; |
f2129354 | 866 | case NL80211_IFTYPE_STATION: |
fffd0934 | 867 | cfg80211_mgd_wext_connect(rdev, wdev); |
f2129354 | 868 | break; |
29cbe68c | 869 | #endif |
c80d545d | 870 | #ifdef CONFIG_MAC80211_MESH |
29cbe68c | 871 | case NL80211_IFTYPE_MESH_POINT: |
c80d545d JC |
872 | { |
873 | /* backward compat code... */ | |
874 | struct mesh_setup setup; | |
875 | memcpy(&setup, &default_mesh_setup, | |
876 | sizeof(setup)); | |
877 | /* back compat only needed for mesh_id */ | |
878 | setup.mesh_id = wdev->ssid; | |
879 | setup.mesh_id_len = wdev->mesh_id_up_len; | |
880 | if (wdev->mesh_id_up_len) | |
881 | __cfg80211_join_mesh(rdev, dev, | |
882 | &setup, | |
883 | &default_mesh_config); | |
884 | break; | |
885 | } | |
886 | #endif | |
f2129354 | 887 | default: |
04a773ad | 888 | break; |
f2129354 | 889 | } |
667503dd | 890 | wdev_unlock(wdev); |
ad002395 | 891 | rdev->opencount++; |
bf6a0579 JO |
892 | |
893 | /* | |
894 | * Configure power management to the driver here so that its | |
895 | * correctly set also after interface type changes etc. | |
896 | */ | |
5966f2dd EP |
897 | if ((wdev->iftype == NL80211_IFTYPE_STATION || |
898 | wdev->iftype == NL80211_IFTYPE_P2P_CLIENT) && | |
bf6a0579 | 899 | rdev->ops->set_power_mgmt) |
e35e4d28 HG |
900 | if (rdev_set_power_mgmt(rdev, dev, wdev->ps, |
901 | wdev->ps_timeout)) { | |
bf6a0579 JO |
902 | /* assume this means it's off */ |
903 | wdev->ps = false; | |
904 | } | |
2a783c13 | 905 | break; |
704232c2 | 906 | case NETDEV_UNREGISTER: |
e40cbdac JB |
907 | /* |
908 | * It is possible to get NETDEV_UNREGISTER | |
909 | * multiple times. To detect that, check | |
910 | * that the interface is still on the list | |
911 | * of registered interfaces, and only then | |
912 | * remove and clean it up. | |
913 | */ | |
2a783c13 | 914 | if (!list_empty(&wdev->list)) { |
704232c2 | 915 | sysfs_remove_link(&dev->dev.kobj, "phy80211"); |
5f2aa25e | 916 | list_del_rcu(&wdev->list); |
f5ea9120 | 917 | rdev->devlist_generation++; |
2e161f78 | 918 | cfg80211_mlme_purge_registrations(wdev); |
3d23e349 | 919 | #ifdef CONFIG_CFG80211_WEXT |
e40cbdac | 920 | kfree(wdev->wext.keys); |
fffd0934 | 921 | #endif |
e40cbdac | 922 | } |
5f2aa25e JB |
923 | /* |
924 | * synchronise (so that we won't find this netdev | |
925 | * from other code any more) and then clear the list | |
926 | * head so that the above code can safely check for | |
927 | * !list_empty() to avoid double-cleanup. | |
928 | */ | |
929 | synchronize_rcu(); | |
930 | INIT_LIST_HEAD(&wdev->list); | |
1f6fc43e DD |
931 | /* |
932 | * Ensure that all events have been processed and | |
933 | * freed. | |
934 | */ | |
935 | cfg80211_process_wdev_events(wdev); | |
f9bef3df BG |
936 | |
937 | if (WARN_ON(wdev->current_bss)) { | |
938 | cfg80211_unhold_bss(wdev->current_bss); | |
939 | cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub); | |
940 | wdev->current_bss = NULL; | |
941 | } | |
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); |