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> |
2740f0cf | 5 | * Copyright 2013-2014 Intel Mobile Communications GmbH |
c4cbaf79 | 6 | * Copyright 2015-2017 Intel Deutschland GmbH |
704232c2 JB |
7 | */ |
8 | ||
e9c0268f JP |
9 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
10 | ||
704232c2 JB |
11 | #include <linux/if.h> |
12 | #include <linux/module.h> | |
13 | #include <linux/err.h> | |
704232c2 | 14 | #include <linux/list.h> |
5a0e3ad6 | 15 | #include <linux/slab.h> |
704232c2 JB |
16 | #include <linux/nl80211.h> |
17 | #include <linux/debugfs.h> | |
18 | #include <linux/notifier.h> | |
19 | #include <linux/device.h> | |
16a832e7 | 20 | #include <linux/etherdevice.h> |
1f87f7d3 | 21 | #include <linux/rtnetlink.h> |
d43c36dc | 22 | #include <linux/sched.h> |
704232c2 JB |
23 | #include <net/genetlink.h> |
24 | #include <net/cfg80211.h> | |
55682965 | 25 | #include "nl80211.h" |
704232c2 JB |
26 | #include "core.h" |
27 | #include "sysfs.h" | |
1ac61302 | 28 | #include "debugfs.h" |
a9a11622 | 29 | #include "wext-compat.h" |
e35e4d28 | 30 | #include "rdev-ops.h" |
704232c2 JB |
31 | |
32 | /* name for sysfs, %d is appended */ | |
33 | #define PHY_NAME "phy" | |
34 | ||
35 | MODULE_AUTHOR("Johannes Berg"); | |
36 | MODULE_LICENSE("GPL"); | |
37 | MODULE_DESCRIPTION("wireless configuration support"); | |
fb4e1568 | 38 | MODULE_ALIAS_GENL_FAMILY(NL80211_GENL_NAME); |
704232c2 | 39 | |
5fe231e8 | 40 | /* RCU-protected (and RTNL for writers) */ |
79c97e97 | 41 | LIST_HEAD(cfg80211_rdev_list); |
f5ea9120 | 42 | int cfg80211_rdev_list_generation; |
a1794390 | 43 | |
704232c2 JB |
44 | /* for debugfs */ |
45 | static struct dentry *ieee80211_debugfs_dir; | |
46 | ||
e60d7443 AB |
47 | /* for the cleanup, scan and event works */ |
48 | struct workqueue_struct *cfg80211_wq; | |
49 | ||
40db6c77 AK |
50 | static bool cfg80211_disable_40mhz_24ghz; |
51 | module_param(cfg80211_disable_40mhz_24ghz, bool, 0644); | |
52 | MODULE_PARM_DESC(cfg80211_disable_40mhz_24ghz, | |
53 | "Disable 40MHz support in the 2.4GHz band"); | |
54 | ||
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 | |
5fe231e8 | 59 | ASSERT_RTNL(); |
761cf7ec | 60 | |
79c97e97 JB |
61 | list_for_each_entry(rdev, &cfg80211_rdev_list, list) { |
62 | if (rdev->wiphy_idx == wiphy_idx) { | |
63 | result = rdev; | |
55682965 JB |
64 | break; |
65 | } | |
66 | } | |
67 | ||
68 | return result; | |
69 | } | |
70 | ||
806a9e39 LR |
71 | int get_wiphy_idx(struct wiphy *wiphy) |
72 | { | |
f26cbf40 | 73 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); |
f4173766 | 74 | |
79c97e97 | 75 | return rdev->wiphy_idx; |
806a9e39 LR |
76 | } |
77 | ||
806a9e39 LR |
78 | struct wiphy *wiphy_idx_to_wiphy(int wiphy_idx) |
79 | { | |
79c97e97 | 80 | struct cfg80211_registered_device *rdev; |
806a9e39 | 81 | |
5fe231e8 | 82 | ASSERT_RTNL(); |
806a9e39 | 83 | |
79c97e97 JB |
84 | rdev = cfg80211_rdev_by_wiphy_idx(wiphy_idx); |
85 | if (!rdev) | |
806a9e39 | 86 | return NULL; |
79c97e97 | 87 | return &rdev->wiphy; |
806a9e39 LR |
88 | } |
89 | ||
1998d90a BG |
90 | static int cfg80211_dev_check_name(struct cfg80211_registered_device *rdev, |
91 | const char *newname) | |
55682965 | 92 | { |
79c97e97 | 93 | struct cfg80211_registered_device *rdev2; |
1998d90a | 94 | int wiphy_idx, taken = -1, digits; |
55682965 | 95 | |
5fe231e8 | 96 | ASSERT_RTNL(); |
2940bb69 | 97 | |
a7cfebcb JB |
98 | if (strlen(newname) > NL80211_WIPHY_NAME_MAXLEN) |
99 | return -EINVAL; | |
100 | ||
7623225f JB |
101 | /* prohibit calling the thing phy%d when %d is not its number */ |
102 | sscanf(newname, PHY_NAME "%d%n", &wiphy_idx, &taken); | |
103 | if (taken == strlen(newname) && wiphy_idx != rdev->wiphy_idx) { | |
104 | /* count number of places needed to print wiphy_idx */ | |
105 | digits = 1; | |
106 | while (wiphy_idx /= 10) | |
107 | digits++; | |
108 | /* | |
109 | * deny the name if it is phy<idx> where <idx> is printed | |
110 | * without leading zeroes. taken == strlen(newname) here | |
111 | */ | |
112 | if (taken == strlen(PHY_NAME) + digits) | |
113 | return -EINVAL; | |
114 | } | |
115 | ||
1998d90a BG |
116 | /* Ensure another device does not already have this name. */ |
117 | list_for_each_entry(rdev2, &cfg80211_rdev_list, list) | |
118 | if (strcmp(newname, wiphy_name(&rdev2->wiphy)) == 0) | |
119 | return -EINVAL; | |
120 | ||
121 | return 0; | |
122 | } | |
123 | ||
124 | int cfg80211_dev_rename(struct cfg80211_registered_device *rdev, | |
125 | char *newname) | |
126 | { | |
127 | int result; | |
128 | ||
129 | ASSERT_RTNL(); | |
7623225f | 130 | |
2940bb69 | 131 | /* Ignore nop renames */ |
1998d90a | 132 | if (strcmp(newname, wiphy_name(&rdev->wiphy)) == 0) |
4bbf4d56 | 133 | return 0; |
2940bb69 | 134 | |
1998d90a BG |
135 | result = cfg80211_dev_check_name(rdev, newname); |
136 | if (result < 0) | |
137 | return result; | |
55682965 | 138 | |
55682965 JB |
139 | result = device_rename(&rdev->wiphy.dev, newname); |
140 | if (result) | |
4bbf4d56 | 141 | return result; |
55682965 | 142 | |
33c0360b JB |
143 | if (rdev->wiphy.debugfsdir && |
144 | !debugfs_rename(rdev->wiphy.debugfsdir->d_parent, | |
55682965 JB |
145 | rdev->wiphy.debugfsdir, |
146 | rdev->wiphy.debugfsdir->d_parent, | |
147 | newname)) | |
e9c0268f | 148 | pr_err("failed to rename debugfs dir to %s!\n", newname); |
55682965 | 149 | |
3bb20556 | 150 | nl80211_notify_wiphy(rdev, NL80211_CMD_NEW_WIPHY); |
55682965 | 151 | |
4bbf4d56 | 152 | return 0; |
55682965 JB |
153 | } |
154 | ||
463d0183 JB |
155 | int cfg80211_switch_netns(struct cfg80211_registered_device *rdev, |
156 | struct net *net) | |
157 | { | |
158 | struct wireless_dev *wdev; | |
159 | int err = 0; | |
160 | ||
5be83de5 | 161 | if (!(rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK)) |
463d0183 JB |
162 | return -EOPNOTSUPP; |
163 | ||
53873f13 | 164 | list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) { |
ba22fb5b JB |
165 | if (!wdev->netdev) |
166 | continue; | |
463d0183 JB |
167 | wdev->netdev->features &= ~NETIF_F_NETNS_LOCAL; |
168 | err = dev_change_net_namespace(wdev->netdev, net, "wlan%d"); | |
169 | if (err) | |
170 | break; | |
171 | wdev->netdev->features |= NETIF_F_NETNS_LOCAL; | |
172 | } | |
173 | ||
174 | if (err) { | |
175 | /* failed -- clean up to old netns */ | |
176 | net = wiphy_net(&rdev->wiphy); | |
177 | ||
53873f13 JB |
178 | list_for_each_entry_continue_reverse(wdev, |
179 | &rdev->wiphy.wdev_list, | |
463d0183 | 180 | list) { |
ba22fb5b JB |
181 | if (!wdev->netdev) |
182 | continue; | |
463d0183 JB |
183 | wdev->netdev->features &= ~NETIF_F_NETNS_LOCAL; |
184 | err = dev_change_net_namespace(wdev->netdev, net, | |
185 | "wlan%d"); | |
186 | WARN_ON(err); | |
187 | wdev->netdev->features |= NETIF_F_NETNS_LOCAL; | |
188 | } | |
04600794 JB |
189 | |
190 | return err; | |
463d0183 JB |
191 | } |
192 | ||
193 | wiphy_net_set(&rdev->wiphy, net); | |
194 | ||
04600794 JB |
195 | err = device_rename(&rdev->wiphy.dev, dev_name(&rdev->wiphy.dev)); |
196 | WARN_ON(err); | |
197 | ||
198 | return 0; | |
463d0183 JB |
199 | } |
200 | ||
1f87f7d3 JB |
201 | static void cfg80211_rfkill_poll(struct rfkill *rfkill, void *data) |
202 | { | |
79c97e97 | 203 | struct cfg80211_registered_device *rdev = data; |
1f87f7d3 | 204 | |
e35e4d28 | 205 | rdev_rfkill_poll(rdev); |
1f87f7d3 JB |
206 | } |
207 | ||
f9f47529 JB |
208 | void cfg80211_stop_p2p_device(struct cfg80211_registered_device *rdev, |
209 | struct wireless_dev *wdev) | |
210 | { | |
5fe231e8 | 211 | ASSERT_RTNL(); |
f9f47529 JB |
212 | |
213 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)) | |
214 | return; | |
215 | ||
73c7da3d | 216 | if (!wdev_running(wdev)) |
f9f47529 JB |
217 | return; |
218 | ||
219 | rdev_stop_p2p_device(rdev, wdev); | |
73c7da3d | 220 | wdev->is_running = false; |
f9f47529 JB |
221 | |
222 | rdev->opencount--; | |
223 | ||
a617302c JB |
224 | if (rdev->scan_req && rdev->scan_req->wdev == wdev) { |
225 | if (WARN_ON(!rdev->scan_req->notified)) | |
1d76250b | 226 | rdev->scan_req->info.aborted = true; |
f9d15d16 | 227 | ___cfg80211_scan_done(rdev, false); |
a617302c | 228 | } |
f9f47529 JB |
229 | } |
230 | ||
cb3b7d87 AB |
231 | void cfg80211_stop_nan(struct cfg80211_registered_device *rdev, |
232 | struct wireless_dev *wdev) | |
233 | { | |
234 | ASSERT_RTNL(); | |
235 | ||
236 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_NAN)) | |
237 | return; | |
238 | ||
73c7da3d | 239 | if (!wdev_running(wdev)) |
cb3b7d87 AB |
240 | return; |
241 | ||
242 | rdev_stop_nan(rdev, wdev); | |
73c7da3d | 243 | wdev->is_running = false; |
cb3b7d87 AB |
244 | |
245 | rdev->opencount--; | |
246 | } | |
247 | ||
f6837ba8 | 248 | void cfg80211_shutdown_all_interfaces(struct wiphy *wiphy) |
1f87f7d3 | 249 | { |
f6837ba8 | 250 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); |
1f87f7d3 JB |
251 | struct wireless_dev *wdev; |
252 | ||
f6837ba8 | 253 | ASSERT_RTNL(); |
f9f47529 | 254 | |
53873f13 | 255 | list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) { |
98104fde | 256 | if (wdev->netdev) { |
ba22fb5b | 257 | dev_close(wdev->netdev); |
98104fde JB |
258 | continue; |
259 | } | |
260 | /* otherwise, check iftype */ | |
261 | switch (wdev->iftype) { | |
262 | case NL80211_IFTYPE_P2P_DEVICE: | |
f9f47529 | 263 | cfg80211_stop_p2p_device(rdev, wdev); |
98104fde | 264 | break; |
cb3b7d87 AB |
265 | case NL80211_IFTYPE_NAN: |
266 | cfg80211_stop_nan(rdev, wdev); | |
267 | break; | |
98104fde JB |
268 | default: |
269 | break; | |
270 | } | |
271 | } | |
f6837ba8 JB |
272 | } |
273 | EXPORT_SYMBOL_GPL(cfg80211_shutdown_all_interfaces); | |
1f87f7d3 | 274 | |
f6837ba8 JB |
275 | static int cfg80211_rfkill_set_block(void *data, bool blocked) |
276 | { | |
277 | struct cfg80211_registered_device *rdev = data; | |
278 | ||
279 | if (!blocked) | |
280 | return 0; | |
281 | ||
282 | rtnl_lock(); | |
283 | cfg80211_shutdown_all_interfaces(&rdev->wiphy); | |
1f87f7d3 JB |
284 | rtnl_unlock(); |
285 | ||
286 | return 0; | |
287 | } | |
288 | ||
289 | static void cfg80211_rfkill_sync_work(struct work_struct *work) | |
290 | { | |
79c97e97 | 291 | struct cfg80211_registered_device *rdev; |
1f87f7d3 | 292 | |
79c97e97 JB |
293 | rdev = container_of(work, struct cfg80211_registered_device, rfkill_sync); |
294 | cfg80211_rfkill_set_block(rdev, rfkill_blocked(rdev->rfkill)); | |
1f87f7d3 JB |
295 | } |
296 | ||
667503dd JB |
297 | static void cfg80211_event_work(struct work_struct *work) |
298 | { | |
299 | struct cfg80211_registered_device *rdev; | |
667503dd JB |
300 | |
301 | rdev = container_of(work, struct cfg80211_registered_device, | |
302 | event_work); | |
303 | ||
304 | rtnl_lock(); | |
3d54d255 | 305 | cfg80211_process_rdev_events(rdev); |
667503dd JB |
306 | rtnl_unlock(); |
307 | } | |
308 | ||
78f22b6a JB |
309 | void cfg80211_destroy_ifaces(struct cfg80211_registered_device *rdev) |
310 | { | |
ab81007a | 311 | struct wireless_dev *wdev, *tmp; |
78f22b6a JB |
312 | |
313 | ASSERT_RTNL(); | |
314 | ||
ab81007a JB |
315 | list_for_each_entry_safe(wdev, tmp, &rdev->wiphy.wdev_list, list) { |
316 | if (wdev->nl_owner_dead) | |
317 | rdev_del_virtual_intf(rdev, wdev); | |
78f22b6a | 318 | } |
78f22b6a JB |
319 | } |
320 | ||
321 | static void cfg80211_destroy_iface_wk(struct work_struct *work) | |
322 | { | |
323 | struct cfg80211_registered_device *rdev; | |
324 | ||
325 | rdev = container_of(work, struct cfg80211_registered_device, | |
326 | destroy_work); | |
327 | ||
328 | rtnl_lock(); | |
329 | cfg80211_destroy_ifaces(rdev); | |
330 | rtnl_unlock(); | |
331 | } | |
332 | ||
93a1e86c JR |
333 | static void cfg80211_sched_scan_stop_wk(struct work_struct *work) |
334 | { | |
335 | struct cfg80211_registered_device *rdev; | |
ca986ad9 | 336 | struct cfg80211_sched_scan_request *req, *tmp; |
93a1e86c JR |
337 | |
338 | rdev = container_of(work, struct cfg80211_registered_device, | |
339 | sched_scan_stop_wk); | |
340 | ||
341 | rtnl_lock(); | |
ca986ad9 AVS |
342 | list_for_each_entry_safe(req, tmp, &rdev->sched_scan_req_list, list) { |
343 | if (req->nl_owner_dead) | |
344 | cfg80211_stop_sched_scan_req(rdev, req, false); | |
345 | } | |
93a1e86c JR |
346 | rtnl_unlock(); |
347 | } | |
348 | ||
89766727 VT |
349 | static void cfg80211_propagate_radar_detect_wk(struct work_struct *work) |
350 | { | |
351 | struct cfg80211_registered_device *rdev; | |
352 | ||
353 | rdev = container_of(work, struct cfg80211_registered_device, | |
354 | propagate_radar_detect_wk); | |
355 | ||
356 | rtnl_lock(); | |
357 | ||
358 | regulatory_propagate_dfs_state(&rdev->wiphy, &rdev->radar_chandef, | |
359 | NL80211_DFS_UNAVAILABLE, | |
360 | NL80211_RADAR_DETECTED); | |
361 | ||
362 | rtnl_unlock(); | |
363 | } | |
364 | ||
365 | static void cfg80211_propagate_cac_done_wk(struct work_struct *work) | |
366 | { | |
367 | struct cfg80211_registered_device *rdev; | |
368 | ||
369 | rdev = container_of(work, struct cfg80211_registered_device, | |
370 | propagate_cac_done_wk); | |
371 | ||
372 | rtnl_lock(); | |
373 | ||
374 | regulatory_propagate_dfs_state(&rdev->wiphy, &rdev->cac_done_chandef, | |
375 | NL80211_DFS_AVAILABLE, | |
376 | NL80211_RADAR_CAC_FINISHED); | |
377 | ||
378 | rtnl_unlock(); | |
379 | } | |
380 | ||
704232c2 JB |
381 | /* exported functions */ |
382 | ||
1998d90a BG |
383 | struct wiphy *wiphy_new_nm(const struct cfg80211_ops *ops, int sizeof_priv, |
384 | const char *requested_name) | |
704232c2 | 385 | { |
73810b77 | 386 | static atomic_t wiphy_counter = ATOMIC_INIT(0); |
7623225f JB |
387 | |
388 | struct cfg80211_registered_device *rdev; | |
704232c2 JB |
389 | int alloc_size; |
390 | ||
0b20633d JB |
391 | WARN_ON(ops->add_key && (!ops->del_key || !ops->set_default_key)); |
392 | WARN_ON(ops->auth && (!ops->assoc || !ops->deauth || !ops->disassoc)); | |
393 | WARN_ON(ops->connect && !ops->disconnect); | |
394 | WARN_ON(ops->join_ibss && !ops->leave_ibss); | |
395 | WARN_ON(ops->add_virtual_intf && !ops->del_virtual_intf); | |
396 | WARN_ON(ops->add_station && !ops->del_station); | |
397 | WARN_ON(ops->add_mpath && !ops->del_mpath); | |
29cbe68c | 398 | WARN_ON(ops->join_mesh && !ops->leave_mesh); |
de3bb771 OO |
399 | WARN_ON(ops->start_p2p_device && !ops->stop_p2p_device); |
400 | WARN_ON(ops->start_ap && !ops->stop_ap); | |
401 | WARN_ON(ops->join_ocb && !ops->leave_ocb); | |
402 | WARN_ON(ops->suspend && !ops->resume); | |
403 | WARN_ON(ops->sched_scan_start && !ops->sched_scan_stop); | |
404 | WARN_ON(ops->remain_on_channel && !ops->cancel_remain_on_channel); | |
405 | WARN_ON(ops->tdls_channel_switch && !ops->tdls_cancel_channel_switch); | |
406 | WARN_ON(ops->add_tx_ts && !ops->del_tx_ts); | |
41ade00f | 407 | |
79c97e97 | 408 | alloc_size = sizeof(*rdev) + sizeof_priv; |
704232c2 | 409 | |
79c97e97 JB |
410 | rdev = kzalloc(alloc_size, GFP_KERNEL); |
411 | if (!rdev) | |
704232c2 JB |
412 | return NULL; |
413 | ||
79c97e97 | 414 | rdev->ops = ops; |
704232c2 | 415 | |
73810b77 | 416 | rdev->wiphy_idx = atomic_inc_return(&wiphy_counter); |
a4d73ee1 | 417 | |
f4173766 | 418 | if (unlikely(rdev->wiphy_idx < 0)) { |
7623225f | 419 | /* ugh, wrapped! */ |
73810b77 | 420 | atomic_dec(&wiphy_counter); |
79c97e97 | 421 | kfree(rdev); |
704232c2 JB |
422 | return NULL; |
423 | } | |
704232c2 | 424 | |
9b881963 JB |
425 | /* atomic_inc_return makes it start at 1, make it start at 0 */ |
426 | rdev->wiphy_idx--; | |
427 | ||
7623225f | 428 | /* give it a proper name */ |
1998d90a BG |
429 | if (requested_name && requested_name[0]) { |
430 | int rv; | |
431 | ||
432 | rtnl_lock(); | |
433 | rv = cfg80211_dev_check_name(rdev, requested_name); | |
434 | ||
435 | if (rv < 0) { | |
436 | rtnl_unlock(); | |
437 | goto use_default_name; | |
438 | } | |
439 | ||
440 | rv = dev_set_name(&rdev->wiphy.dev, "%s", requested_name); | |
441 | rtnl_unlock(); | |
442 | if (rv) | |
443 | goto use_default_name; | |
444 | } else { | |
59b179b4 JB |
445 | int rv; |
446 | ||
1998d90a BG |
447 | use_default_name: |
448 | /* NOTE: This is *probably* safe w/out holding rtnl because of | |
449 | * the restrictions on phy names. Probably this call could | |
450 | * fail if some other part of the kernel (re)named a device | |
451 | * phyX. But, might should add some locking and check return | |
452 | * value, and use a different name if this one exists? | |
453 | */ | |
59b179b4 JB |
454 | rv = dev_set_name(&rdev->wiphy.dev, PHY_NAME "%d", rdev->wiphy_idx); |
455 | if (rv < 0) { | |
456 | kfree(rdev); | |
457 | return NULL; | |
458 | } | |
1998d90a | 459 | } |
7623225f | 460 | |
53873f13 | 461 | INIT_LIST_HEAD(&rdev->wiphy.wdev_list); |
37c73b5f BG |
462 | INIT_LIST_HEAD(&rdev->beacon_registrations); |
463 | spin_lock_init(&rdev->beacon_registrations_lock); | |
79c97e97 JB |
464 | spin_lock_init(&rdev->bss_lock); |
465 | INIT_LIST_HEAD(&rdev->bss_list); | |
ca986ad9 | 466 | INIT_LIST_HEAD(&rdev->sched_scan_req_list); |
79c97e97 | 467 | INIT_WORK(&rdev->scan_done_wk, __cfg80211_scan_done); |
33d8783c JB |
468 | INIT_LIST_HEAD(&rdev->mlme_unreg); |
469 | spin_lock_init(&rdev->mlme_unreg_lock); | |
470 | INIT_WORK(&rdev->mlme_unreg_wk, cfg80211_mlme_unreg_wk); | |
04f39047 SW |
471 | INIT_DELAYED_WORK(&rdev->dfs_update_channels_wk, |
472 | cfg80211_dfs_channels_update_work); | |
3d23e349 JB |
473 | #ifdef CONFIG_CFG80211_WEXT |
474 | rdev->wiphy.wext = &cfg80211_wext_handler; | |
475 | #endif | |
476 | ||
79c97e97 JB |
477 | device_initialize(&rdev->wiphy.dev); |
478 | rdev->wiphy.dev.class = &ieee80211_class; | |
479 | rdev->wiphy.dev.platform_data = rdev; | |
9f0e1354 | 480 | device_enable_async_suspend(&rdev->wiphy.dev); |
79c97e97 | 481 | |
78f22b6a | 482 | INIT_WORK(&rdev->destroy_work, cfg80211_destroy_iface_wk); |
93a1e86c | 483 | INIT_WORK(&rdev->sched_scan_stop_wk, cfg80211_sched_scan_stop_wk); |
b34939b9 | 484 | INIT_WORK(&rdev->sched_scan_res_wk, cfg80211_sched_scan_results_wk); |
89766727 VT |
485 | INIT_WORK(&rdev->propagate_radar_detect_wk, |
486 | cfg80211_propagate_radar_detect_wk); | |
487 | INIT_WORK(&rdev->propagate_cac_done_wk, cfg80211_propagate_cac_done_wk); | |
78f22b6a | 488 | |
5be83de5 JB |
489 | #ifdef CONFIG_CFG80211_DEFAULT_PS |
490 | rdev->wiphy.flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT; | |
491 | #endif | |
16cb9d42 | 492 | |
463d0183 JB |
493 | wiphy_net_set(&rdev->wiphy, &init_net); |
494 | ||
79c97e97 JB |
495 | rdev->rfkill_ops.set_block = cfg80211_rfkill_set_block; |
496 | rdev->rfkill = rfkill_alloc(dev_name(&rdev->wiphy.dev), | |
497 | &rdev->wiphy.dev, RFKILL_TYPE_WLAN, | |
498 | &rdev->rfkill_ops, rdev); | |
499 | ||
500 | if (!rdev->rfkill) { | |
501 | kfree(rdev); | |
1f87f7d3 JB |
502 | return NULL; |
503 | } | |
504 | ||
79c97e97 JB |
505 | INIT_WORK(&rdev->rfkill_sync, cfg80211_rfkill_sync_work); |
506 | INIT_WORK(&rdev->conn_work, cfg80211_conn_work); | |
507 | INIT_WORK(&rdev->event_work, cfg80211_event_work); | |
1f87f7d3 | 508 | |
ad002395 JB |
509 | init_waitqueue_head(&rdev->dev_wait); |
510 | ||
b9a5f8ca JM |
511 | /* |
512 | * Initialize wiphy parameters to IEEE 802.11 MIB default values. | |
513 | * Fragmentation and RTS threshold are disabled by default with the | |
514 | * special -1 value. | |
515 | */ | |
79c97e97 JB |
516 | rdev->wiphy.retry_short = 7; |
517 | rdev->wiphy.retry_long = 4; | |
518 | rdev->wiphy.frag_threshold = (u32) -1; | |
519 | rdev->wiphy.rts_threshold = (u32) -1; | |
81077e82 | 520 | rdev->wiphy.coverage_class = 0; |
b9a5f8ca | 521 | |
9a774c78 AO |
522 | rdev->wiphy.max_num_csa_counters = 1; |
523 | ||
3b06d277 AS |
524 | rdev->wiphy.max_sched_scan_plans = 1; |
525 | rdev->wiphy.max_sched_scan_plan_interval = U32_MAX; | |
526 | ||
79c97e97 | 527 | return &rdev->wiphy; |
704232c2 | 528 | } |
1998d90a | 529 | EXPORT_SYMBOL(wiphy_new_nm); |
704232c2 | 530 | |
7527a782 JB |
531 | static int wiphy_verify_combinations(struct wiphy *wiphy) |
532 | { | |
533 | const struct ieee80211_iface_combination *c; | |
534 | int i, j; | |
535 | ||
7527a782 JB |
536 | for (i = 0; i < wiphy->n_iface_combinations; i++) { |
537 | u32 cnt = 0; | |
538 | u16 all_iftypes = 0; | |
539 | ||
540 | c = &wiphy->iface_combinations[i]; | |
541 | ||
11c4a075 SW |
542 | /* |
543 | * Combinations with just one interface aren't real, | |
544 | * however we make an exception for DFS. | |
545 | */ | |
546 | if (WARN_ON((c->max_interfaces < 2) && !c->radar_detect_widths)) | |
7527a782 JB |
547 | return -EINVAL; |
548 | ||
549 | /* Need at least one channel */ | |
550 | if (WARN_ON(!c->num_different_channels)) | |
551 | return -EINVAL; | |
552 | ||
d4e50c59 MK |
553 | /* |
554 | * Put a sane limit on maximum number of different | |
555 | * channels to simplify channel accounting code. | |
556 | */ | |
557 | if (WARN_ON(c->num_different_channels > | |
558 | CFG80211_MAX_NUM_DIFFERENT_CHANNELS)) | |
559 | return -EINVAL; | |
560 | ||
11c4a075 SW |
561 | /* DFS only works on one channel. */ |
562 | if (WARN_ON(c->radar_detect_widths && | |
563 | (c->num_different_channels > 1))) | |
564 | return -EINVAL; | |
565 | ||
7527a782 JB |
566 | if (WARN_ON(!c->n_limits)) |
567 | return -EINVAL; | |
568 | ||
569 | for (j = 0; j < c->n_limits; j++) { | |
570 | u16 types = c->limits[j].types; | |
571 | ||
b6a55015 | 572 | /* interface types shouldn't overlap */ |
7527a782 JB |
573 | if (WARN_ON(types & all_iftypes)) |
574 | return -EINVAL; | |
575 | all_iftypes |= types; | |
576 | ||
577 | if (WARN_ON(!c->limits[j].max)) | |
578 | return -EINVAL; | |
579 | ||
580 | /* Shouldn't list software iftypes in combinations! */ | |
581 | if (WARN_ON(wiphy->software_iftypes & types)) | |
582 | return -EINVAL; | |
583 | ||
98104fde JB |
584 | /* Only a single P2P_DEVICE can be allowed */ |
585 | if (WARN_ON(types & BIT(NL80211_IFTYPE_P2P_DEVICE) && | |
586 | c->limits[j].max > 1)) | |
587 | return -EINVAL; | |
588 | ||
cb3b7d87 AB |
589 | /* Only a single NAN can be allowed */ |
590 | if (WARN_ON(types & BIT(NL80211_IFTYPE_NAN) && | |
591 | c->limits[j].max > 1)) | |
592 | return -EINVAL; | |
593 | ||
56271da2 JB |
594 | /* |
595 | * This isn't well-defined right now. If you have an | |
596 | * IBSS interface, then its beacon interval may change | |
597 | * by joining other networks, and nothing prevents it | |
598 | * from doing that. | |
599 | * So technically we probably shouldn't even allow AP | |
600 | * and IBSS in the same interface, but it seems that | |
601 | * some drivers support that, possibly only with fixed | |
602 | * beacon intervals for IBSS. | |
603 | */ | |
604 | if (WARN_ON(types & BIT(NL80211_IFTYPE_ADHOC) && | |
605 | c->beacon_int_min_gcd)) { | |
606 | return -EINVAL; | |
607 | } | |
608 | ||
7527a782 JB |
609 | cnt += c->limits[j].max; |
610 | /* | |
611 | * Don't advertise an unsupported type | |
612 | * in a combination. | |
613 | */ | |
614 | if (WARN_ON((wiphy->interface_modes & types) != types)) | |
615 | return -EINVAL; | |
616 | } | |
617 | ||
8f205423 JB |
618 | #ifndef CONFIG_WIRELESS_WDS |
619 | if (WARN_ON(all_iftypes & BIT(NL80211_IFTYPE_WDS))) | |
620 | return -EINVAL; | |
621 | #endif | |
622 | ||
7527a782 JB |
623 | /* You can't even choose that many! */ |
624 | if (WARN_ON(cnt < c->max_interfaces)) | |
625 | return -EINVAL; | |
626 | } | |
627 | ||
628 | return 0; | |
629 | } | |
630 | ||
704232c2 JB |
631 | int wiphy_register(struct wiphy *wiphy) |
632 | { | |
f26cbf40 | 633 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); |
704232c2 | 634 | int res; |
57fbcce3 | 635 | enum nl80211_band band; |
8318d78a JB |
636 | struct ieee80211_supported_band *sband; |
637 | bool have_band = false; | |
638 | int i; | |
f59ac048 LR |
639 | u16 ifmodes = wiphy->interface_modes; |
640 | ||
dfb89c56 | 641 | #ifdef CONFIG_PM |
964dc9e2 JB |
642 | if (WARN_ON(wiphy->wowlan && |
643 | (wiphy->wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) && | |
644 | !(wiphy->wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY))) | |
645 | return -EINVAL; | |
646 | if (WARN_ON(wiphy->wowlan && | |
647 | !wiphy->wowlan->flags && !wiphy->wowlan->n_patterns && | |
648 | !wiphy->wowlan->tcp)) | |
77dbbb13 | 649 | return -EINVAL; |
dfb89c56 | 650 | #endif |
1057d35e AN |
651 | if (WARN_ON((wiphy->features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH) && |
652 | (!rdev->ops->tdls_channel_switch || | |
653 | !rdev->ops->tdls_cancel_channel_switch))) | |
654 | return -EINVAL; | |
77dbbb13 | 655 | |
cb3b7d87 | 656 | if (WARN_ON((wiphy->interface_modes & BIT(NL80211_IFTYPE_NAN)) && |
a442b761 | 657 | (!rdev->ops->start_nan || !rdev->ops->stop_nan || |
8585989d LC |
658 | !rdev->ops->add_nan_func || !rdev->ops->del_nan_func || |
659 | !(wiphy->nan_supported_bands & BIT(NL80211_BAND_2GHZ))))) | |
cb3b7d87 AB |
660 | return -EINVAL; |
661 | ||
8f205423 JB |
662 | #ifndef CONFIG_WIRELESS_WDS |
663 | if (WARN_ON(wiphy->interface_modes & BIT(NL80211_IFTYPE_WDS))) | |
664 | return -EINVAL; | |
665 | #endif | |
666 | ||
ad932f04 AN |
667 | /* |
668 | * if a wiphy has unsupported modes for regulatory channel enforcement, | |
669 | * opt-out of enforcement checking | |
670 | */ | |
671 | if (wiphy->interface_modes & ~(BIT(NL80211_IFTYPE_STATION) | | |
672 | BIT(NL80211_IFTYPE_P2P_CLIENT) | | |
673 | BIT(NL80211_IFTYPE_AP) | | |
674 | BIT(NL80211_IFTYPE_P2P_GO) | | |
675 | BIT(NL80211_IFTYPE_ADHOC) | | |
676 | BIT(NL80211_IFTYPE_P2P_DEVICE) | | |
cb3b7d87 | 677 | BIT(NL80211_IFTYPE_NAN) | |
ad932f04 AN |
678 | BIT(NL80211_IFTYPE_AP_VLAN) | |
679 | BIT(NL80211_IFTYPE_MONITOR))) | |
680 | wiphy->regulatory_flags |= REGULATORY_IGNORE_STALE_KICKOFF; | |
681 | ||
b0d7aa59 JD |
682 | if (WARN_ON((wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED) && |
683 | (wiphy->regulatory_flags & | |
684 | (REGULATORY_CUSTOM_REG | | |
685 | REGULATORY_STRICT_REG | | |
686 | REGULATORY_COUNTRY_IE_FOLLOW_POWER | | |
687 | REGULATORY_COUNTRY_IE_IGNORE)))) | |
688 | return -EINVAL; | |
689 | ||
be29b99a AK |
690 | if (WARN_ON(wiphy->coalesce && |
691 | (!wiphy->coalesce->n_rules || | |
692 | !wiphy->coalesce->n_patterns) && | |
693 | (!wiphy->coalesce->pattern_min_len || | |
694 | wiphy->coalesce->pattern_min_len > | |
695 | wiphy->coalesce->pattern_max_len))) | |
696 | return -EINVAL; | |
697 | ||
562a7480 JB |
698 | if (WARN_ON(wiphy->ap_sme_capa && |
699 | !(wiphy->flags & WIPHY_FLAG_HAVE_AP_SME))) | |
700 | return -EINVAL; | |
701 | ||
ef15aac6 JB |
702 | if (WARN_ON(wiphy->addresses && !wiphy->n_addresses)) |
703 | return -EINVAL; | |
704 | ||
705 | if (WARN_ON(wiphy->addresses && | |
706 | !is_zero_ether_addr(wiphy->perm_addr) && | |
707 | memcmp(wiphy->perm_addr, wiphy->addresses[0].addr, | |
708 | ETH_ALEN))) | |
709 | return -EINVAL; | |
710 | ||
77765eaf VT |
711 | if (WARN_ON(wiphy->max_acl_mac_addrs && |
712 | (!(wiphy->flags & WIPHY_FLAG_HAVE_AP_SME) || | |
713 | !rdev->ops->set_mac_acl))) | |
714 | return -EINVAL; | |
715 | ||
38de03d2 AS |
716 | /* assure only valid behaviours are flagged by driver |
717 | * hence subtract 2 as bit 0 is invalid. | |
718 | */ | |
719 | if (WARN_ON(wiphy->bss_select_support && | |
720 | (wiphy->bss_select_support & ~(BIT(__NL80211_BSS_SELECT_ATTR_AFTER_LAST) - 2)))) | |
721 | return -EINVAL; | |
722 | ||
3a00df57 AS |
723 | if (WARN_ON(wiphy_ext_feature_isset(&rdev->wiphy, |
724 | NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X) && | |
725 | (!rdev->ops->set_pmk || !rdev->ops->del_pmk))) | |
726 | return -EINVAL; | |
727 | ||
7f9a3e15 VK |
728 | if (WARN_ON(!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) && |
729 | rdev->ops->update_connect_params)) | |
730 | return -EINVAL; | |
731 | ||
ef15aac6 JB |
732 | if (wiphy->addresses) |
733 | memcpy(wiphy->perm_addr, wiphy->addresses[0].addr, ETH_ALEN); | |
734 | ||
f59ac048 LR |
735 | /* sanity check ifmodes */ |
736 | WARN_ON(!ifmodes); | |
2e161f78 | 737 | ifmodes &= ((1 << NUM_NL80211_IFTYPES) - 1) & ~1; |
f59ac048 LR |
738 | if (WARN_ON(ifmodes != wiphy->interface_modes)) |
739 | wiphy->interface_modes = ifmodes; | |
8318d78a | 740 | |
7527a782 JB |
741 | res = wiphy_verify_combinations(wiphy); |
742 | if (res) | |
743 | return res; | |
744 | ||
8318d78a | 745 | /* sanity check supported bands/channels */ |
57fbcce3 | 746 | for (band = 0; band < NUM_NL80211_BANDS; band++) { |
c4cbaf79 LC |
747 | u16 types = 0; |
748 | ||
8318d78a JB |
749 | sband = wiphy->bands[band]; |
750 | if (!sband) | |
751 | continue; | |
752 | ||
753 | sband->band = band; | |
3a0c52a6 VK |
754 | if (WARN_ON(!sband->n_channels)) |
755 | return -EINVAL; | |
756 | /* | |
8047d261 | 757 | * on 60GHz band, there are no legacy rates, so |
3a0c52a6 VK |
758 | * n_bitrates is 0 |
759 | */ | |
57fbcce3 | 760 | if (WARN_ON(band != NL80211_BAND_60GHZ && |
3a0c52a6 | 761 | !sband->n_bitrates)) |
881d948c JB |
762 | return -EINVAL; |
763 | ||
40db6c77 AK |
764 | /* |
765 | * Since cfg80211_disable_40mhz_24ghz is global, we can | |
766 | * modify the sband's ht data even if the driver uses a | |
767 | * global structure for that. | |
768 | */ | |
769 | if (cfg80211_disable_40mhz_24ghz && | |
57fbcce3 | 770 | band == NL80211_BAND_2GHZ && |
40db6c77 AK |
771 | sband->ht_cap.ht_supported) { |
772 | sband->ht_cap.cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; | |
773 | sband->ht_cap.cap &= ~IEEE80211_HT_CAP_SGI_40; | |
774 | } | |
775 | ||
881d948c JB |
776 | /* |
777 | * Since we use a u32 for rate bitmaps in | |
778 | * ieee80211_get_response_rate, we cannot | |
779 | * have more than 32 legacy rates. | |
780 | */ | |
781 | if (WARN_ON(sband->n_bitrates > 32)) | |
8318d78a | 782 | return -EINVAL; |
8318d78a JB |
783 | |
784 | for (i = 0; i < sband->n_channels; i++) { | |
785 | sband->channels[i].orig_flags = | |
786 | sband->channels[i].flags; | |
c4a9fafc | 787 | sband->channels[i].orig_mag = INT_MAX; |
8318d78a JB |
788 | sband->channels[i].orig_mpwr = |
789 | sband->channels[i].max_power; | |
790 | sband->channels[i].band = band; | |
791 | } | |
792 | ||
c4cbaf79 LC |
793 | for (i = 0; i < sband->n_iftype_data; i++) { |
794 | const struct ieee80211_sband_iftype_data *iftd; | |
795 | ||
796 | iftd = &sband->iftype_data[i]; | |
797 | ||
798 | if (WARN_ON(!iftd->types_mask)) | |
799 | return -EINVAL; | |
800 | if (WARN_ON(types & iftd->types_mask)) | |
801 | return -EINVAL; | |
802 | ||
803 | /* at least one piece of information must be present */ | |
804 | if (WARN_ON(!iftd->he_cap.has_he)) | |
805 | return -EINVAL; | |
806 | ||
807 | types |= iftd->types_mask; | |
808 | } | |
809 | ||
8318d78a JB |
810 | have_band = true; |
811 | } | |
812 | ||
813 | if (!have_band) { | |
814 | WARN_ON(1); | |
815 | return -EINVAL; | |
816 | } | |
817 | ||
dfb89c56 | 818 | #ifdef CONFIG_PM |
964dc9e2 JB |
819 | if (WARN_ON(rdev->wiphy.wowlan && rdev->wiphy.wowlan->n_patterns && |
820 | (!rdev->wiphy.wowlan->pattern_min_len || | |
821 | rdev->wiphy.wowlan->pattern_min_len > | |
822 | rdev->wiphy.wowlan->pattern_max_len))) | |
823 | return -EINVAL; | |
dfb89c56 | 824 | #endif |
ff1b6e69 | 825 | |
8318d78a JB |
826 | /* check and set up bitrates */ |
827 | ieee80211_set_bitrate_flags(wiphy); | |
828 | ||
00c3a6ed JB |
829 | rdev->wiphy.features |= NL80211_FEATURE_SCAN_FLUSH; |
830 | ||
aa5f66d5 | 831 | rtnl_lock(); |
79c97e97 | 832 | res = device_add(&rdev->wiphy.dev); |
c3d34d5d | 833 | if (res) { |
aa5f66d5 | 834 | rtnl_unlock(); |
c3d34d5d JL |
835 | return res; |
836 | } | |
1f87f7d3 | 837 | |
2f0accc1 | 838 | /* set up regulatory info */ |
57b5ce07 | 839 | wiphy_regulatory_register(wiphy); |
2f0accc1 | 840 | |
5f2aa25e | 841 | list_add_rcu(&rdev->list, &cfg80211_rdev_list); |
f5ea9120 | 842 | cfg80211_rdev_list_generation++; |
704232c2 JB |
843 | |
844 | /* add to debugfs */ | |
79c97e97 JB |
845 | rdev->wiphy.debugfsdir = |
846 | debugfs_create_dir(wiphy_name(&rdev->wiphy), | |
704232c2 | 847 | ieee80211_debugfs_dir); |
79c97e97 JB |
848 | if (IS_ERR(rdev->wiphy.debugfsdir)) |
849 | rdev->wiphy.debugfsdir = NULL; | |
704232c2 | 850 | |
a796dac9 TB |
851 | cfg80211_debugfs_rdev_add(rdev); |
852 | nl80211_notify_wiphy(rdev, NL80211_CMD_NEW_WIPHY); | |
853 | ||
a2f73b6c | 854 | if (wiphy->regulatory_flags & REGULATORY_CUSTOM_REG) { |
73d54c9e LR |
855 | struct regulatory_request request; |
856 | ||
857 | request.wiphy_idx = get_wiphy_idx(wiphy); | |
858 | request.initiator = NL80211_REGDOM_SET_BY_DRIVER; | |
859 | request.alpha2[0] = '9'; | |
860 | request.alpha2[1] = '9'; | |
861 | ||
862 | nl80211_send_reg_change_event(&request); | |
863 | } | |
864 | ||
019ae3a9 KV |
865 | /* Check that nobody globally advertises any capabilities they do not |
866 | * advertise on all possible interface types. | |
867 | */ | |
868 | if (wiphy->extended_capabilities_len && | |
869 | wiphy->num_iftype_ext_capab && | |
870 | wiphy->iftype_ext_capab) { | |
871 | u8 supported_on_all, j; | |
872 | const struct wiphy_iftype_ext_capab *capab; | |
873 | ||
874 | capab = wiphy->iftype_ext_capab; | |
875 | for (j = 0; j < wiphy->extended_capabilities_len; j++) { | |
876 | if (capab[0].extended_capabilities_len > j) | |
877 | supported_on_all = | |
878 | capab[0].extended_capabilities[j]; | |
879 | else | |
880 | supported_on_all = 0x00; | |
881 | for (i = 1; i < wiphy->num_iftype_ext_capab; i++) { | |
882 | if (j >= capab[i].extended_capabilities_len) { | |
883 | supported_on_all = 0x00; | |
884 | break; | |
885 | } | |
886 | supported_on_all &= | |
887 | capab[i].extended_capabilities[j]; | |
888 | } | |
889 | if (WARN_ON(wiphy->extended_capabilities[j] & | |
890 | ~supported_on_all)) | |
891 | break; | |
892 | } | |
893 | } | |
894 | ||
ecb44335 SG |
895 | rdev->wiphy.registered = true; |
896 | rtnl_unlock(); | |
aa5f66d5 JB |
897 | |
898 | res = rfkill_register(rdev->rfkill); | |
899 | if (res) { | |
900 | rfkill_destroy(rdev->rfkill); | |
901 | rdev->rfkill = NULL; | |
902 | wiphy_unregister(&rdev->wiphy); | |
903 | return res; | |
904 | } | |
905 | ||
2f0accc1 | 906 | return 0; |
704232c2 JB |
907 | } |
908 | EXPORT_SYMBOL(wiphy_register); | |
909 | ||
1f87f7d3 JB |
910 | void wiphy_rfkill_start_polling(struct wiphy *wiphy) |
911 | { | |
f26cbf40 | 912 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); |
1f87f7d3 | 913 | |
79c97e97 | 914 | if (!rdev->ops->rfkill_poll) |
1f87f7d3 | 915 | return; |
79c97e97 JB |
916 | rdev->rfkill_ops.poll = cfg80211_rfkill_poll; |
917 | rfkill_resume_polling(rdev->rfkill); | |
1f87f7d3 JB |
918 | } |
919 | EXPORT_SYMBOL(wiphy_rfkill_start_polling); | |
920 | ||
921 | void wiphy_rfkill_stop_polling(struct wiphy *wiphy) | |
922 | { | |
f26cbf40 | 923 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); |
1f87f7d3 | 924 | |
79c97e97 | 925 | rfkill_pause_polling(rdev->rfkill); |
1f87f7d3 JB |
926 | } |
927 | EXPORT_SYMBOL(wiphy_rfkill_stop_polling); | |
928 | ||
704232c2 JB |
929 | void wiphy_unregister(struct wiphy *wiphy) |
930 | { | |
f26cbf40 | 931 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); |
704232c2 | 932 | |
ad002395 JB |
933 | wait_event(rdev->dev_wait, ({ |
934 | int __count; | |
5fe231e8 | 935 | rtnl_lock(); |
ad002395 | 936 | __count = rdev->opencount; |
5fe231e8 | 937 | rtnl_unlock(); |
c4f60846 | 938 | __count == 0; })); |
ad002395 | 939 | |
aa5f66d5 JB |
940 | if (rdev->rfkill) |
941 | rfkill_unregister(rdev->rfkill); | |
256c90de | 942 | |
5fe231e8 | 943 | rtnl_lock(); |
3bb20556 | 944 | nl80211_notify_wiphy(rdev, NL80211_CMD_DEL_WIPHY); |
5fe231e8 JB |
945 | rdev->wiphy.registered = false; |
946 | ||
53873f13 | 947 | WARN_ON(!list_empty(&rdev->wiphy.wdev_list)); |
ad002395 JB |
948 | |
949 | /* | |
950 | * First remove the hardware from everywhere, this makes | |
951 | * it impossible to find from userspace. | |
952 | */ | |
7bcfaf2f | 953 | debugfs_remove_recursive(rdev->wiphy.debugfsdir); |
5f2aa25e JB |
954 | list_del_rcu(&rdev->list); |
955 | synchronize_rcu(); | |
f16bfc1c | 956 | |
bfead080 LR |
957 | /* |
958 | * If this device got a regulatory hint tell core its | |
959 | * free to listen now to a new shiny device regulatory hint | |
960 | */ | |
961 | wiphy_regulatory_deregister(wiphy); | |
3f2355cb | 962 | |
f5ea9120 | 963 | cfg80211_rdev_list_generation++; |
79c97e97 | 964 | device_del(&rdev->wiphy.dev); |
704232c2 | 965 | |
5fe231e8 | 966 | rtnl_unlock(); |
6682588a | 967 | |
36e6fea8 | 968 | flush_work(&rdev->scan_done_wk); |
6682588a | 969 | cancel_work_sync(&rdev->conn_work); |
6682588a | 970 | flush_work(&rdev->event_work); |
04f39047 | 971 | cancel_delayed_work_sync(&rdev->dfs_update_channels_wk); |
78f22b6a | 972 | flush_work(&rdev->destroy_work); |
93a1e86c | 973 | flush_work(&rdev->sched_scan_stop_wk); |
33d8783c | 974 | flush_work(&rdev->mlme_unreg_wk); |
89766727 VT |
975 | flush_work(&rdev->propagate_radar_detect_wk); |
976 | flush_work(&rdev->propagate_cac_done_wk); | |
6d52563f | 977 | |
6abb9cb9 JB |
978 | #ifdef CONFIG_PM |
979 | if (rdev->wiphy.wowlan_config && rdev->ops->set_wakeup) | |
e35e4d28 | 980 | rdev_set_wakeup(rdev, false); |
6abb9cb9 | 981 | #endif |
6d52563f | 982 | cfg80211_rdev_free_wowlan(rdev); |
be29b99a | 983 | cfg80211_rdev_free_coalesce(rdev); |
704232c2 JB |
984 | } |
985 | EXPORT_SYMBOL(wiphy_unregister); | |
986 | ||
79c97e97 | 987 | void cfg80211_dev_free(struct cfg80211_registered_device *rdev) |
704232c2 | 988 | { |
2a519311 | 989 | struct cfg80211_internal_bss *scan, *tmp; |
37c73b5f | 990 | struct cfg80211_beacon_registration *reg, *treg; |
79c97e97 | 991 | rfkill_destroy(rdev->rfkill); |
37c73b5f BG |
992 | list_for_each_entry_safe(reg, treg, &rdev->beacon_registrations, list) { |
993 | list_del(®->list); | |
994 | kfree(reg); | |
995 | } | |
79c97e97 | 996 | list_for_each_entry_safe(scan, tmp, &rdev->bss_list, list) |
5b112d3d | 997 | cfg80211_put_bss(&rdev->wiphy, &scan->pub); |
79c97e97 | 998 | kfree(rdev); |
704232c2 JB |
999 | } |
1000 | ||
1001 | void wiphy_free(struct wiphy *wiphy) | |
1002 | { | |
1003 | put_device(&wiphy->dev); | |
1004 | } | |
1005 | EXPORT_SYMBOL(wiphy_free); | |
1006 | ||
1f87f7d3 JB |
1007 | void wiphy_rfkill_set_hw_state(struct wiphy *wiphy, bool blocked) |
1008 | { | |
f26cbf40 | 1009 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); |
1f87f7d3 | 1010 | |
79c97e97 JB |
1011 | if (rfkill_set_hw_state(rdev->rfkill, blocked)) |
1012 | schedule_work(&rdev->rfkill_sync); | |
1f87f7d3 JB |
1013 | } |
1014 | EXPORT_SYMBOL(wiphy_rfkill_set_hw_state); | |
1015 | ||
4a4b8169 AZ |
1016 | void cfg80211_cqm_config_free(struct wireless_dev *wdev) |
1017 | { | |
1018 | kfree(wdev->cqm_config); | |
1019 | wdev->cqm_config = NULL; | |
1020 | } | |
1021 | ||
85dd3da4 | 1022 | static void __cfg80211_unregister_wdev(struct wireless_dev *wdev, bool sync) |
98104fde | 1023 | { |
f26cbf40 | 1024 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); |
98104fde JB |
1025 | |
1026 | ASSERT_RTNL(); | |
1027 | ||
7f8ed01e DK |
1028 | nl80211_notify_iface(rdev, wdev, NL80211_CMD_DEL_INTERFACE); |
1029 | ||
98104fde | 1030 | list_del_rcu(&wdev->list); |
85dd3da4 JB |
1031 | if (sync) |
1032 | synchronize_rcu(); | |
98104fde JB |
1033 | rdev->devlist_generation++; |
1034 | ||
85dd3da4 JB |
1035 | cfg80211_mlme_purge_registrations(wdev); |
1036 | ||
98104fde JB |
1037 | switch (wdev->iftype) { |
1038 | case NL80211_IFTYPE_P2P_DEVICE: | |
f9f47529 | 1039 | cfg80211_stop_p2p_device(rdev, wdev); |
98104fde | 1040 | break; |
cb3b7d87 AB |
1041 | case NL80211_IFTYPE_NAN: |
1042 | cfg80211_stop_nan(rdev, wdev); | |
1043 | break; | |
98104fde | 1044 | default: |
98104fde JB |
1045 | break; |
1046 | } | |
4a4b8169 | 1047 | |
85dd3da4 JB |
1048 | #ifdef CONFIG_CFG80211_WEXT |
1049 | kzfree(wdev->wext.keys); | |
1050 | #endif | |
1051 | /* only initialized if we have a netdev */ | |
1052 | if (wdev->netdev) | |
1053 | flush_work(&wdev->disconnect_wk); | |
1054 | ||
4a4b8169 | 1055 | cfg80211_cqm_config_free(wdev); |
98104fde | 1056 | } |
85dd3da4 JB |
1057 | |
1058 | void cfg80211_unregister_wdev(struct wireless_dev *wdev) | |
1059 | { | |
1060 | if (WARN_ON(wdev->netdev)) | |
1061 | return; | |
1062 | ||
1063 | __cfg80211_unregister_wdev(wdev, true); | |
1064 | } | |
98104fde JB |
1065 | EXPORT_SYMBOL(cfg80211_unregister_wdev); |
1066 | ||
f1e3d556 | 1067 | static const struct device_type wiphy_type = { |
053a93dd MH |
1068 | .name = "wlan", |
1069 | }; | |
1070 | ||
dbbae26a MK |
1071 | void cfg80211_update_iface_num(struct cfg80211_registered_device *rdev, |
1072 | enum nl80211_iftype iftype, int num) | |
1073 | { | |
c5a7e582 | 1074 | ASSERT_RTNL(); |
dbbae26a MK |
1075 | |
1076 | rdev->num_running_ifaces += num; | |
1077 | if (iftype == NL80211_IFTYPE_MONITOR) | |
1078 | rdev->num_running_monitor_ifaces += num; | |
dbbae26a MK |
1079 | } |
1080 | ||
f04c2203 MK |
1081 | void __cfg80211_leave(struct cfg80211_registered_device *rdev, |
1082 | struct wireless_dev *wdev) | |
81256969 SG |
1083 | { |
1084 | struct net_device *dev = wdev->netdev; | |
ca986ad9 | 1085 | struct cfg80211_sched_scan_request *pos, *tmp; |
81256969 | 1086 | |
24d584d7 | 1087 | ASSERT_RTNL(); |
f04c2203 | 1088 | ASSERT_WDEV_LOCK(wdev); |
24d584d7 | 1089 | |
81256969 SG |
1090 | switch (wdev->iftype) { |
1091 | case NL80211_IFTYPE_ADHOC: | |
f04c2203 | 1092 | __cfg80211_leave_ibss(rdev, dev, true); |
81256969 SG |
1093 | break; |
1094 | case NL80211_IFTYPE_P2P_CLIENT: | |
1095 | case NL80211_IFTYPE_STATION: | |
ca986ad9 AVS |
1096 | list_for_each_entry_safe(pos, tmp, &rdev->sched_scan_req_list, |
1097 | list) { | |
1098 | if (dev == pos->dev) | |
1099 | cfg80211_stop_sched_scan_req(rdev, pos, false); | |
1100 | } | |
81256969 | 1101 | |
81256969 SG |
1102 | #ifdef CONFIG_CFG80211_WEXT |
1103 | kfree(wdev->wext.ie); | |
1104 | wdev->wext.ie = NULL; | |
1105 | wdev->wext.ie_len = 0; | |
1106 | wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC; | |
1107 | #endif | |
83739b03 JB |
1108 | cfg80211_disconnect(rdev, dev, |
1109 | WLAN_REASON_DEAUTH_LEAVING, true); | |
81256969 SG |
1110 | break; |
1111 | case NL80211_IFTYPE_MESH_POINT: | |
f04c2203 | 1112 | __cfg80211_leave_mesh(rdev, dev); |
81256969 SG |
1113 | break; |
1114 | case NL80211_IFTYPE_AP: | |
74418ede | 1115 | case NL80211_IFTYPE_P2P_GO: |
f04c2203 | 1116 | __cfg80211_stop_ap(rdev, dev, true); |
81256969 | 1117 | break; |
6e0bd6c3 RL |
1118 | case NL80211_IFTYPE_OCB: |
1119 | __cfg80211_leave_ocb(rdev, dev); | |
1120 | break; | |
de4fcbad JB |
1121 | case NL80211_IFTYPE_WDS: |
1122 | /* must be handled by mac80211/driver, has no APIs */ | |
1123 | break; | |
1124 | case NL80211_IFTYPE_P2P_DEVICE: | |
cb3b7d87 | 1125 | case NL80211_IFTYPE_NAN: |
de4fcbad JB |
1126 | /* cannot happen, has no netdev */ |
1127 | break; | |
1128 | case NL80211_IFTYPE_AP_VLAN: | |
1129 | case NL80211_IFTYPE_MONITOR: | |
1130 | /* nothing to do */ | |
1131 | break; | |
1132 | case NL80211_IFTYPE_UNSPECIFIED: | |
1133 | case NUM_NL80211_IFTYPES: | |
1134 | /* invalid */ | |
81256969 SG |
1135 | break; |
1136 | } | |
81256969 SG |
1137 | } |
1138 | ||
f04c2203 MK |
1139 | void cfg80211_leave(struct cfg80211_registered_device *rdev, |
1140 | struct wireless_dev *wdev) | |
1141 | { | |
1142 | wdev_lock(wdev); | |
1143 | __cfg80211_leave(rdev, wdev); | |
1144 | wdev_unlock(wdev); | |
1145 | } | |
1146 | ||
1147 | void cfg80211_stop_iface(struct wiphy *wiphy, struct wireless_dev *wdev, | |
1148 | gfp_t gfp) | |
1149 | { | |
1150 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); | |
1151 | struct cfg80211_event *ev; | |
1152 | unsigned long flags; | |
1153 | ||
1154 | trace_cfg80211_stop_iface(wiphy, wdev); | |
1155 | ||
1156 | ev = kzalloc(sizeof(*ev), gfp); | |
1157 | if (!ev) | |
1158 | return; | |
1159 | ||
1160 | ev->type = EVENT_STOPPED; | |
1161 | ||
1162 | spin_lock_irqsave(&wdev->event_lock, flags); | |
1163 | list_add_tail(&ev->list, &wdev->event_list); | |
1164 | spin_unlock_irqrestore(&wdev->event_lock, flags); | |
1165 | queue_work(cfg80211_wq, &rdev->event_work); | |
1166 | } | |
1167 | EXPORT_SYMBOL(cfg80211_stop_iface); | |
1168 | ||
e4d4216e JB |
1169 | void cfg80211_init_wdev(struct cfg80211_registered_device *rdev, |
1170 | struct wireless_dev *wdev) | |
1171 | { | |
1172 | mutex_init(&wdev->mtx); | |
1173 | INIT_LIST_HEAD(&wdev->event_list); | |
1174 | spin_lock_init(&wdev->event_lock); | |
1175 | INIT_LIST_HEAD(&wdev->mgmt_registrations); | |
1176 | spin_lock_init(&wdev->mgmt_registrations_lock); | |
1177 | ||
1178 | /* | |
1179 | * We get here also when the interface changes network namespaces, | |
1180 | * as it's registered into the new one, but we don't want it to | |
1181 | * change ID in that case. Checking if the ID is already assigned | |
1182 | * works, because 0 isn't considered a valid ID and the memory is | |
1183 | * 0-initialized. | |
1184 | */ | |
1185 | if (!wdev->identifier) | |
1186 | wdev->identifier = ++rdev->wdev_id; | |
1187 | list_add_rcu(&wdev->list, &rdev->wiphy.wdev_list); | |
1188 | rdev->devlist_generation++; | |
ec8f170b JB |
1189 | |
1190 | nl80211_notify_iface(rdev, wdev, NL80211_CMD_NEW_INTERFACE); | |
e4d4216e JB |
1191 | } |
1192 | ||
c4f60846 | 1193 | static int cfg80211_netdev_notifier_call(struct notifier_block *nb, |
351638e7 | 1194 | unsigned long state, void *ptr) |
704232c2 | 1195 | { |
351638e7 | 1196 | struct net_device *dev = netdev_notifier_info_to_dev(ptr); |
2a783c13 | 1197 | struct wireless_dev *wdev = dev->ieee80211_ptr; |
704232c2 | 1198 | struct cfg80211_registered_device *rdev; |
ca986ad9 | 1199 | struct cfg80211_sched_scan_request *pos, *tmp; |
704232c2 | 1200 | |
2a783c13 | 1201 | if (!wdev) |
1f87f7d3 | 1202 | return NOTIFY_DONE; |
704232c2 | 1203 | |
f26cbf40 | 1204 | rdev = wiphy_to_rdev(wdev->wiphy); |
704232c2 | 1205 | |
2a783c13 | 1206 | WARN_ON(wdev->iftype == NL80211_IFTYPE_UNSPECIFIED); |
60719ffd | 1207 | |
704232c2 | 1208 | switch (state) { |
053a93dd MH |
1209 | case NETDEV_POST_INIT: |
1210 | SET_NETDEV_DEVTYPE(dev, &wiphy_type); | |
1211 | break; | |
704232c2 | 1212 | case NETDEV_REGISTER: |
0ff6ce7b JB |
1213 | /* |
1214 | * NB: cannot take rdev->mtx here because this may be | |
1215 | * called within code protected by it when interfaces | |
1216 | * are added with nl80211. | |
1217 | */ | |
463d0183 JB |
1218 | /* can only change netns with wiphy */ |
1219 | dev->features |= NETIF_F_NETNS_LOCAL; | |
1220 | ||
704232c2 JB |
1221 | if (sysfs_create_link(&dev->dev.kobj, &rdev->wiphy.dev.kobj, |
1222 | "phy80211")) { | |
e9c0268f | 1223 | pr_err("failed to add phy80211 symlink to netdev!\n"); |
704232c2 | 1224 | } |
2a783c13 | 1225 | wdev->netdev = dev; |
3d23e349 | 1226 | #ifdef CONFIG_CFG80211_WEXT |
2a783c13 JB |
1227 | wdev->wext.default_key = -1; |
1228 | wdev->wext.default_mgmt_key = -1; | |
f2129354 | 1229 | wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC; |
ffb9eb3d KV |
1230 | #endif |
1231 | ||
5be83de5 | 1232 | if (wdev->wiphy->flags & WIPHY_FLAG_PS_ON_BY_DEFAULT) |
ffb9eb3d | 1233 | wdev->ps = true; |
5be83de5 | 1234 | else |
ffb9eb3d | 1235 | wdev->ps = false; |
9043f3b8 JO |
1236 | /* allow mac80211 to determine the timeout */ |
1237 | wdev->ps_timeout = -1; | |
ffb9eb3d | 1238 | |
ad4bb6f8 | 1239 | if ((wdev->iftype == NL80211_IFTYPE_STATION || |
074ac8df | 1240 | wdev->iftype == NL80211_IFTYPE_P2P_CLIENT || |
ad4bb6f8 JB |
1241 | wdev->iftype == NL80211_IFTYPE_ADHOC) && !wdev->use_4addr) |
1242 | dev->priv_flags |= IFF_DONT_BRIDGE; | |
896ff063 | 1243 | |
bd2522b1 AZ |
1244 | INIT_WORK(&wdev->disconnect_wk, cfg80211_autodisconnect_wk); |
1245 | ||
ec8f170b | 1246 | cfg80211_init_wdev(rdev, wdev); |
704232c2 | 1247 | break; |
04a773ad | 1248 | case NETDEV_GOING_DOWN: |
81256969 | 1249 | cfg80211_leave(rdev, wdev); |
01a0ac41 JB |
1250 | break; |
1251 | case NETDEV_DOWN: | |
dbbae26a | 1252 | cfg80211_update_iface_num(rdev, wdev->iftype, -1); |
a617302c JB |
1253 | if (rdev->scan_req && rdev->scan_req->wdev == wdev) { |
1254 | if (WARN_ON(!rdev->scan_req->notified)) | |
1d76250b | 1255 | rdev->scan_req->info.aborted = true; |
f9d15d16 | 1256 | ___cfg80211_scan_done(rdev, false); |
a617302c | 1257 | } |
5fe231e8 | 1258 | |
ca986ad9 AVS |
1259 | list_for_each_entry_safe(pos, tmp, |
1260 | &rdev->sched_scan_req_list, list) { | |
d25d062f | 1261 | if (WARN_ON(pos->dev == wdev->netdev)) |
ca986ad9 | 1262 | cfg80211_stop_sched_scan_req(rdev, pos, false); |
5fe231e8 JB |
1263 | } |
1264 | ||
1265 | rdev->opencount--; | |
1266 | wake_up(&rdev->dev_wait); | |
04a773ad JB |
1267 | break; |
1268 | case NETDEV_UP: | |
4290cb4b | 1269 | cfg80211_update_iface_num(rdev, wdev->iftype, 1); |
667503dd | 1270 | wdev_lock(wdev); |
f2129354 | 1271 | switch (wdev->iftype) { |
29cbe68c | 1272 | #ifdef CONFIG_CFG80211_WEXT |
f2129354 | 1273 | case NL80211_IFTYPE_ADHOC: |
fffd0934 | 1274 | cfg80211_ibss_wext_join(rdev, wdev); |
04a773ad | 1275 | break; |
f2129354 | 1276 | case NL80211_IFTYPE_STATION: |
fffd0934 | 1277 | cfg80211_mgd_wext_connect(rdev, wdev); |
f2129354 | 1278 | break; |
29cbe68c | 1279 | #endif |
c80d545d | 1280 | #ifdef CONFIG_MAC80211_MESH |
29cbe68c | 1281 | case NL80211_IFTYPE_MESH_POINT: |
c80d545d JC |
1282 | { |
1283 | /* backward compat code... */ | |
1284 | struct mesh_setup setup; | |
1285 | memcpy(&setup, &default_mesh_setup, | |
1286 | sizeof(setup)); | |
1287 | /* back compat only needed for mesh_id */ | |
1288 | setup.mesh_id = wdev->ssid; | |
1289 | setup.mesh_id_len = wdev->mesh_id_up_len; | |
1290 | if (wdev->mesh_id_up_len) | |
1291 | __cfg80211_join_mesh(rdev, dev, | |
1292 | &setup, | |
1293 | &default_mesh_config); | |
1294 | break; | |
1295 | } | |
1296 | #endif | |
f2129354 | 1297 | default: |
04a773ad | 1298 | break; |
f2129354 | 1299 | } |
667503dd | 1300 | wdev_unlock(wdev); |
ad002395 | 1301 | rdev->opencount++; |
bf6a0579 JO |
1302 | |
1303 | /* | |
1304 | * Configure power management to the driver here so that its | |
1305 | * correctly set also after interface type changes etc. | |
1306 | */ | |
5966f2dd EP |
1307 | if ((wdev->iftype == NL80211_IFTYPE_STATION || |
1308 | wdev->iftype == NL80211_IFTYPE_P2P_CLIENT) && | |
d4f29978 JB |
1309 | rdev->ops->set_power_mgmt && |
1310 | rdev_set_power_mgmt(rdev, dev, wdev->ps, | |
1311 | wdev->ps_timeout)) { | |
1312 | /* assume this means it's off */ | |
1313 | wdev->ps = false; | |
1314 | } | |
2a783c13 | 1315 | break; |
704232c2 | 1316 | case NETDEV_UNREGISTER: |
e40cbdac JB |
1317 | /* |
1318 | * It is possible to get NETDEV_UNREGISTER | |
1319 | * multiple times. To detect that, check | |
1320 | * that the interface is still on the list | |
1321 | * of registered interfaces, and only then | |
1322 | * remove and clean it up. | |
1323 | */ | |
2a783c13 | 1324 | if (!list_empty(&wdev->list)) { |
85dd3da4 | 1325 | __cfg80211_unregister_wdev(wdev, false); |
704232c2 | 1326 | sysfs_remove_link(&dev->dev.kobj, "phy80211"); |
e40cbdac | 1327 | } |
5f2aa25e JB |
1328 | /* |
1329 | * synchronise (so that we won't find this netdev | |
1330 | * from other code any more) and then clear the list | |
1331 | * head so that the above code can safely check for | |
1332 | * !list_empty() to avoid double-cleanup. | |
1333 | */ | |
1334 | synchronize_rcu(); | |
1335 | INIT_LIST_HEAD(&wdev->list); | |
1f6fc43e DD |
1336 | /* |
1337 | * Ensure that all events have been processed and | |
1338 | * freed. | |
1339 | */ | |
1340 | cfg80211_process_wdev_events(wdev); | |
f9bef3df BG |
1341 | |
1342 | if (WARN_ON(wdev->current_bss)) { | |
1343 | cfg80211_unhold_bss(wdev->current_bss); | |
1344 | cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub); | |
1345 | wdev->current_bss = NULL; | |
1346 | } | |
704232c2 | 1347 | break; |
1f87f7d3 | 1348 | case NETDEV_PRE_UP: |
0b20633d JB |
1349 | if (!(wdev->wiphy->interface_modes & BIT(wdev->iftype))) |
1350 | return notifier_from_errno(-EOPNOTSUPP); | |
b6a55015 LC |
1351 | if (rfkill_blocked(rdev->rfkill)) |
1352 | return notifier_from_errno(-ERFKILL); | |
1f87f7d3 | 1353 | break; |
6784c7db ZG |
1354 | default: |
1355 | return NOTIFY_DONE; | |
704232c2 JB |
1356 | } |
1357 | ||
cb150b9d JB |
1358 | wireless_nlevent_flush(); |
1359 | ||
6784c7db | 1360 | return NOTIFY_OK; |
704232c2 JB |
1361 | } |
1362 | ||
1363 | static struct notifier_block cfg80211_netdev_notifier = { | |
1364 | .notifier_call = cfg80211_netdev_notifier_call, | |
1365 | }; | |
1366 | ||
463d0183 JB |
1367 | static void __net_exit cfg80211_pernet_exit(struct net *net) |
1368 | { | |
1369 | struct cfg80211_registered_device *rdev; | |
1370 | ||
1371 | rtnl_lock(); | |
463d0183 JB |
1372 | list_for_each_entry(rdev, &cfg80211_rdev_list, list) { |
1373 | if (net_eq(wiphy_net(&rdev->wiphy), net)) | |
1374 | WARN_ON(cfg80211_switch_netns(rdev, &init_net)); | |
1375 | } | |
463d0183 JB |
1376 | rtnl_unlock(); |
1377 | } | |
1378 | ||
1379 | static struct pernet_operations cfg80211_pernet_ops = { | |
1380 | .exit = cfg80211_pernet_exit, | |
1381 | }; | |
1382 | ||
1383 | static int __init cfg80211_init(void) | |
704232c2 | 1384 | { |
b2e1b302 LR |
1385 | int err; |
1386 | ||
463d0183 JB |
1387 | err = register_pernet_device(&cfg80211_pernet_ops); |
1388 | if (err) | |
1389 | goto out_fail_pernet; | |
1390 | ||
b2e1b302 | 1391 | err = wiphy_sysfs_init(); |
704232c2 JB |
1392 | if (err) |
1393 | goto out_fail_sysfs; | |
1394 | ||
1395 | err = register_netdevice_notifier(&cfg80211_netdev_notifier); | |
1396 | if (err) | |
1397 | goto out_fail_notifier; | |
1398 | ||
55682965 JB |
1399 | err = nl80211_init(); |
1400 | if (err) | |
1401 | goto out_fail_nl80211; | |
1402 | ||
704232c2 JB |
1403 | ieee80211_debugfs_dir = debugfs_create_dir("ieee80211", NULL); |
1404 | ||
b2e1b302 LR |
1405 | err = regulatory_init(); |
1406 | if (err) | |
1407 | goto out_fail_reg; | |
1408 | ||
e4819013 | 1409 | cfg80211_wq = alloc_ordered_workqueue("cfg80211", WQ_MEM_RECLAIM); |
f00f188f WY |
1410 | if (!cfg80211_wq) { |
1411 | err = -ENOMEM; | |
e60d7443 | 1412 | goto out_fail_wq; |
f00f188f | 1413 | } |
e60d7443 | 1414 | |
704232c2 JB |
1415 | return 0; |
1416 | ||
e60d7443 AB |
1417 | out_fail_wq: |
1418 | regulatory_exit(); | |
b2e1b302 LR |
1419 | out_fail_reg: |
1420 | debugfs_remove(ieee80211_debugfs_dir); | |
81daf735 | 1421 | nl80211_exit(); |
55682965 JB |
1422 | out_fail_nl80211: |
1423 | unregister_netdevice_notifier(&cfg80211_netdev_notifier); | |
704232c2 JB |
1424 | out_fail_notifier: |
1425 | wiphy_sysfs_exit(); | |
1426 | out_fail_sysfs: | |
463d0183 JB |
1427 | unregister_pernet_device(&cfg80211_pernet_ops); |
1428 | out_fail_pernet: | |
704232c2 JB |
1429 | return err; |
1430 | } | |
007f6c5e | 1431 | fs_initcall(cfg80211_init); |
704232c2 | 1432 | |
f884e387 | 1433 | static void __exit cfg80211_exit(void) |
704232c2 JB |
1434 | { |
1435 | debugfs_remove(ieee80211_debugfs_dir); | |
55682965 | 1436 | nl80211_exit(); |
704232c2 JB |
1437 | unregister_netdevice_notifier(&cfg80211_netdev_notifier); |
1438 | wiphy_sysfs_exit(); | |
b2e1b302 | 1439 | regulatory_exit(); |
463d0183 | 1440 | unregister_pernet_device(&cfg80211_pernet_ops); |
e60d7443 | 1441 | destroy_workqueue(cfg80211_wq); |
704232c2 JB |
1442 | } |
1443 | module_exit(cfg80211_exit); |