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09c434b8 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
704232c2 JB |
2 | /* |
3 | * This is the linux wireless configuration interface. | |
4 | * | |
5f2aa25e | 5 | * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net> |
2740f0cf | 6 | * Copyright 2013-2014 Intel Mobile Communications GmbH |
c4cbaf79 | 7 | * Copyright 2015-2017 Intel Deutschland GmbH |
9bb7e0f2 | 8 | * Copyright (C) 2018 Intel Corporation |
704232c2 JB |
9 | */ |
10 | ||
e9c0268f JP |
11 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
12 | ||
704232c2 JB |
13 | #include <linux/if.h> |
14 | #include <linux/module.h> | |
15 | #include <linux/err.h> | |
704232c2 | 16 | #include <linux/list.h> |
5a0e3ad6 | 17 | #include <linux/slab.h> |
704232c2 JB |
18 | #include <linux/nl80211.h> |
19 | #include <linux/debugfs.h> | |
20 | #include <linux/notifier.h> | |
21 | #include <linux/device.h> | |
16a832e7 | 22 | #include <linux/etherdevice.h> |
1f87f7d3 | 23 | #include <linux/rtnetlink.h> |
d43c36dc | 24 | #include <linux/sched.h> |
704232c2 JB |
25 | #include <net/genetlink.h> |
26 | #include <net/cfg80211.h> | |
55682965 | 27 | #include "nl80211.h" |
704232c2 JB |
28 | #include "core.h" |
29 | #include "sysfs.h" | |
1ac61302 | 30 | #include "debugfs.h" |
a9a11622 | 31 | #include "wext-compat.h" |
e35e4d28 | 32 | #include "rdev-ops.h" |
704232c2 JB |
33 | |
34 | /* name for sysfs, %d is appended */ | |
35 | #define PHY_NAME "phy" | |
36 | ||
37 | MODULE_AUTHOR("Johannes Berg"); | |
38 | MODULE_LICENSE("GPL"); | |
39 | MODULE_DESCRIPTION("wireless configuration support"); | |
fb4e1568 | 40 | MODULE_ALIAS_GENL_FAMILY(NL80211_GENL_NAME); |
704232c2 | 41 | |
5fe231e8 | 42 | /* RCU-protected (and RTNL for writers) */ |
79c97e97 | 43 | LIST_HEAD(cfg80211_rdev_list); |
f5ea9120 | 44 | int cfg80211_rdev_list_generation; |
a1794390 | 45 | |
704232c2 JB |
46 | /* for debugfs */ |
47 | static struct dentry *ieee80211_debugfs_dir; | |
48 | ||
e60d7443 AB |
49 | /* for the cleanup, scan and event works */ |
50 | struct workqueue_struct *cfg80211_wq; | |
51 | ||
40db6c77 AK |
52 | static bool cfg80211_disable_40mhz_24ghz; |
53 | module_param(cfg80211_disable_40mhz_24ghz, bool, 0644); | |
54 | MODULE_PARM_DESC(cfg80211_disable_40mhz_24ghz, | |
55 | "Disable 40MHz support in the 2.4GHz band"); | |
56 | ||
79c97e97 | 57 | struct cfg80211_registered_device *cfg80211_rdev_by_wiphy_idx(int wiphy_idx) |
55682965 | 58 | { |
79c97e97 | 59 | struct cfg80211_registered_device *result = NULL, *rdev; |
55682965 | 60 | |
5fe231e8 | 61 | ASSERT_RTNL(); |
761cf7ec | 62 | |
79c97e97 JB |
63 | list_for_each_entry(rdev, &cfg80211_rdev_list, list) { |
64 | if (rdev->wiphy_idx == wiphy_idx) { | |
65 | result = rdev; | |
55682965 JB |
66 | break; |
67 | } | |
68 | } | |
69 | ||
70 | return result; | |
71 | } | |
72 | ||
806a9e39 LR |
73 | int get_wiphy_idx(struct wiphy *wiphy) |
74 | { | |
f26cbf40 | 75 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); |
f4173766 | 76 | |
79c97e97 | 77 | return rdev->wiphy_idx; |
806a9e39 LR |
78 | } |
79 | ||
806a9e39 LR |
80 | struct wiphy *wiphy_idx_to_wiphy(int wiphy_idx) |
81 | { | |
79c97e97 | 82 | struct cfg80211_registered_device *rdev; |
806a9e39 | 83 | |
5fe231e8 | 84 | ASSERT_RTNL(); |
806a9e39 | 85 | |
79c97e97 JB |
86 | rdev = cfg80211_rdev_by_wiphy_idx(wiphy_idx); |
87 | if (!rdev) | |
806a9e39 | 88 | return NULL; |
79c97e97 | 89 | return &rdev->wiphy; |
806a9e39 LR |
90 | } |
91 | ||
1998d90a BG |
92 | static int cfg80211_dev_check_name(struct cfg80211_registered_device *rdev, |
93 | const char *newname) | |
55682965 | 94 | { |
79c97e97 | 95 | struct cfg80211_registered_device *rdev2; |
1998d90a | 96 | int wiphy_idx, taken = -1, digits; |
55682965 | 97 | |
5fe231e8 | 98 | ASSERT_RTNL(); |
2940bb69 | 99 | |
a7cfebcb JB |
100 | if (strlen(newname) > NL80211_WIPHY_NAME_MAXLEN) |
101 | return -EINVAL; | |
102 | ||
7623225f JB |
103 | /* prohibit calling the thing phy%d when %d is not its number */ |
104 | sscanf(newname, PHY_NAME "%d%n", &wiphy_idx, &taken); | |
105 | if (taken == strlen(newname) && wiphy_idx != rdev->wiphy_idx) { | |
106 | /* count number of places needed to print wiphy_idx */ | |
107 | digits = 1; | |
108 | while (wiphy_idx /= 10) | |
109 | digits++; | |
110 | /* | |
111 | * deny the name if it is phy<idx> where <idx> is printed | |
112 | * without leading zeroes. taken == strlen(newname) here | |
113 | */ | |
114 | if (taken == strlen(PHY_NAME) + digits) | |
115 | return -EINVAL; | |
116 | } | |
117 | ||
1998d90a BG |
118 | /* Ensure another device does not already have this name. */ |
119 | list_for_each_entry(rdev2, &cfg80211_rdev_list, list) | |
120 | if (strcmp(newname, wiphy_name(&rdev2->wiphy)) == 0) | |
121 | return -EINVAL; | |
122 | ||
123 | return 0; | |
124 | } | |
125 | ||
126 | int cfg80211_dev_rename(struct cfg80211_registered_device *rdev, | |
127 | char *newname) | |
128 | { | |
129 | int result; | |
130 | ||
131 | ASSERT_RTNL(); | |
7623225f | 132 | |
2940bb69 | 133 | /* Ignore nop renames */ |
1998d90a | 134 | if (strcmp(newname, wiphy_name(&rdev->wiphy)) == 0) |
4bbf4d56 | 135 | return 0; |
2940bb69 | 136 | |
1998d90a BG |
137 | result = cfg80211_dev_check_name(rdev, newname); |
138 | if (result < 0) | |
139 | return result; | |
55682965 | 140 | |
55682965 JB |
141 | result = device_rename(&rdev->wiphy.dev, newname); |
142 | if (result) | |
4bbf4d56 | 143 | return result; |
55682965 | 144 | |
33c0360b JB |
145 | if (rdev->wiphy.debugfsdir && |
146 | !debugfs_rename(rdev->wiphy.debugfsdir->d_parent, | |
55682965 JB |
147 | rdev->wiphy.debugfsdir, |
148 | rdev->wiphy.debugfsdir->d_parent, | |
149 | newname)) | |
e9c0268f | 150 | pr_err("failed to rename debugfs dir to %s!\n", newname); |
55682965 | 151 | |
3bb20556 | 152 | nl80211_notify_wiphy(rdev, NL80211_CMD_NEW_WIPHY); |
55682965 | 153 | |
4bbf4d56 | 154 | return 0; |
55682965 JB |
155 | } |
156 | ||
463d0183 JB |
157 | int cfg80211_switch_netns(struct cfg80211_registered_device *rdev, |
158 | struct net *net) | |
159 | { | |
160 | struct wireless_dev *wdev; | |
161 | int err = 0; | |
162 | ||
5be83de5 | 163 | if (!(rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK)) |
463d0183 JB |
164 | return -EOPNOTSUPP; |
165 | ||
53873f13 | 166 | list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) { |
ba22fb5b JB |
167 | if (!wdev->netdev) |
168 | continue; | |
463d0183 JB |
169 | wdev->netdev->features &= ~NETIF_F_NETNS_LOCAL; |
170 | err = dev_change_net_namespace(wdev->netdev, net, "wlan%d"); | |
171 | if (err) | |
172 | break; | |
173 | wdev->netdev->features |= NETIF_F_NETNS_LOCAL; | |
174 | } | |
175 | ||
176 | if (err) { | |
177 | /* failed -- clean up to old netns */ | |
178 | net = wiphy_net(&rdev->wiphy); | |
179 | ||
53873f13 JB |
180 | list_for_each_entry_continue_reverse(wdev, |
181 | &rdev->wiphy.wdev_list, | |
463d0183 | 182 | list) { |
ba22fb5b JB |
183 | if (!wdev->netdev) |
184 | continue; | |
463d0183 JB |
185 | wdev->netdev->features &= ~NETIF_F_NETNS_LOCAL; |
186 | err = dev_change_net_namespace(wdev->netdev, net, | |
187 | "wlan%d"); | |
188 | WARN_ON(err); | |
189 | wdev->netdev->features |= NETIF_F_NETNS_LOCAL; | |
190 | } | |
04600794 JB |
191 | |
192 | return err; | |
463d0183 JB |
193 | } |
194 | ||
c90b670b MW |
195 | list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) { |
196 | if (!wdev->netdev) | |
197 | continue; | |
198 | nl80211_notify_iface(rdev, wdev, NL80211_CMD_DEL_INTERFACE); | |
199 | } | |
200 | nl80211_notify_wiphy(rdev, NL80211_CMD_DEL_WIPHY); | |
201 | ||
463d0183 JB |
202 | wiphy_net_set(&rdev->wiphy, net); |
203 | ||
04600794 JB |
204 | err = device_rename(&rdev->wiphy.dev, dev_name(&rdev->wiphy.dev)); |
205 | WARN_ON(err); | |
206 | ||
c90b670b MW |
207 | nl80211_notify_wiphy(rdev, NL80211_CMD_NEW_WIPHY); |
208 | list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) { | |
209 | if (!wdev->netdev) | |
210 | continue; | |
211 | nl80211_notify_iface(rdev, wdev, NL80211_CMD_NEW_INTERFACE); | |
212 | } | |
213 | ||
04600794 | 214 | return 0; |
463d0183 JB |
215 | } |
216 | ||
1f87f7d3 JB |
217 | static void cfg80211_rfkill_poll(struct rfkill *rfkill, void *data) |
218 | { | |
79c97e97 | 219 | struct cfg80211_registered_device *rdev = data; |
1f87f7d3 | 220 | |
e35e4d28 | 221 | rdev_rfkill_poll(rdev); |
1f87f7d3 JB |
222 | } |
223 | ||
f9f47529 JB |
224 | void cfg80211_stop_p2p_device(struct cfg80211_registered_device *rdev, |
225 | struct wireless_dev *wdev) | |
226 | { | |
5fe231e8 | 227 | ASSERT_RTNL(); |
f9f47529 JB |
228 | |
229 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)) | |
230 | return; | |
231 | ||
73c7da3d | 232 | if (!wdev_running(wdev)) |
f9f47529 JB |
233 | return; |
234 | ||
235 | rdev_stop_p2p_device(rdev, wdev); | |
73c7da3d | 236 | wdev->is_running = false; |
f9f47529 JB |
237 | |
238 | rdev->opencount--; | |
239 | ||
a617302c JB |
240 | if (rdev->scan_req && rdev->scan_req->wdev == wdev) { |
241 | if (WARN_ON(!rdev->scan_req->notified)) | |
1d76250b | 242 | rdev->scan_req->info.aborted = true; |
f9d15d16 | 243 | ___cfg80211_scan_done(rdev, false); |
a617302c | 244 | } |
f9f47529 JB |
245 | } |
246 | ||
cb3b7d87 AB |
247 | void cfg80211_stop_nan(struct cfg80211_registered_device *rdev, |
248 | struct wireless_dev *wdev) | |
249 | { | |
250 | ASSERT_RTNL(); | |
251 | ||
252 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_NAN)) | |
253 | return; | |
254 | ||
73c7da3d | 255 | if (!wdev_running(wdev)) |
cb3b7d87 AB |
256 | return; |
257 | ||
258 | rdev_stop_nan(rdev, wdev); | |
73c7da3d | 259 | wdev->is_running = false; |
cb3b7d87 AB |
260 | |
261 | rdev->opencount--; | |
262 | } | |
263 | ||
f6837ba8 | 264 | void cfg80211_shutdown_all_interfaces(struct wiphy *wiphy) |
1f87f7d3 | 265 | { |
f6837ba8 | 266 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); |
1f87f7d3 JB |
267 | struct wireless_dev *wdev; |
268 | ||
f6837ba8 | 269 | ASSERT_RTNL(); |
f9f47529 | 270 | |
53873f13 | 271 | list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) { |
98104fde | 272 | if (wdev->netdev) { |
ba22fb5b | 273 | dev_close(wdev->netdev); |
98104fde JB |
274 | continue; |
275 | } | |
276 | /* otherwise, check iftype */ | |
277 | switch (wdev->iftype) { | |
278 | case NL80211_IFTYPE_P2P_DEVICE: | |
f9f47529 | 279 | cfg80211_stop_p2p_device(rdev, wdev); |
98104fde | 280 | break; |
cb3b7d87 AB |
281 | case NL80211_IFTYPE_NAN: |
282 | cfg80211_stop_nan(rdev, wdev); | |
283 | break; | |
98104fde JB |
284 | default: |
285 | break; | |
286 | } | |
287 | } | |
f6837ba8 JB |
288 | } |
289 | EXPORT_SYMBOL_GPL(cfg80211_shutdown_all_interfaces); | |
1f87f7d3 | 290 | |
f6837ba8 JB |
291 | static int cfg80211_rfkill_set_block(void *data, bool blocked) |
292 | { | |
293 | struct cfg80211_registered_device *rdev = data; | |
294 | ||
295 | if (!blocked) | |
296 | return 0; | |
297 | ||
298 | rtnl_lock(); | |
299 | cfg80211_shutdown_all_interfaces(&rdev->wiphy); | |
1f87f7d3 JB |
300 | rtnl_unlock(); |
301 | ||
302 | return 0; | |
303 | } | |
304 | ||
305 | static void cfg80211_rfkill_sync_work(struct work_struct *work) | |
306 | { | |
79c97e97 | 307 | struct cfg80211_registered_device *rdev; |
1f87f7d3 | 308 | |
79c97e97 JB |
309 | rdev = container_of(work, struct cfg80211_registered_device, rfkill_sync); |
310 | cfg80211_rfkill_set_block(rdev, rfkill_blocked(rdev->rfkill)); | |
1f87f7d3 JB |
311 | } |
312 | ||
667503dd JB |
313 | static void cfg80211_event_work(struct work_struct *work) |
314 | { | |
315 | struct cfg80211_registered_device *rdev; | |
667503dd JB |
316 | |
317 | rdev = container_of(work, struct cfg80211_registered_device, | |
318 | event_work); | |
319 | ||
320 | rtnl_lock(); | |
3d54d255 | 321 | cfg80211_process_rdev_events(rdev); |
667503dd JB |
322 | rtnl_unlock(); |
323 | } | |
324 | ||
78f22b6a JB |
325 | void cfg80211_destroy_ifaces(struct cfg80211_registered_device *rdev) |
326 | { | |
ab81007a | 327 | struct wireless_dev *wdev, *tmp; |
78f22b6a JB |
328 | |
329 | ASSERT_RTNL(); | |
330 | ||
ab81007a JB |
331 | list_for_each_entry_safe(wdev, tmp, &rdev->wiphy.wdev_list, list) { |
332 | if (wdev->nl_owner_dead) | |
333 | rdev_del_virtual_intf(rdev, wdev); | |
78f22b6a | 334 | } |
78f22b6a JB |
335 | } |
336 | ||
337 | static void cfg80211_destroy_iface_wk(struct work_struct *work) | |
338 | { | |
339 | struct cfg80211_registered_device *rdev; | |
340 | ||
341 | rdev = container_of(work, struct cfg80211_registered_device, | |
342 | destroy_work); | |
343 | ||
344 | rtnl_lock(); | |
345 | cfg80211_destroy_ifaces(rdev); | |
346 | rtnl_unlock(); | |
347 | } | |
348 | ||
93a1e86c JR |
349 | static void cfg80211_sched_scan_stop_wk(struct work_struct *work) |
350 | { | |
351 | struct cfg80211_registered_device *rdev; | |
ca986ad9 | 352 | struct cfg80211_sched_scan_request *req, *tmp; |
93a1e86c JR |
353 | |
354 | rdev = container_of(work, struct cfg80211_registered_device, | |
355 | sched_scan_stop_wk); | |
356 | ||
357 | rtnl_lock(); | |
ca986ad9 AVS |
358 | list_for_each_entry_safe(req, tmp, &rdev->sched_scan_req_list, list) { |
359 | if (req->nl_owner_dead) | |
360 | cfg80211_stop_sched_scan_req(rdev, req, false); | |
361 | } | |
93a1e86c JR |
362 | rtnl_unlock(); |
363 | } | |
364 | ||
89766727 VT |
365 | static void cfg80211_propagate_radar_detect_wk(struct work_struct *work) |
366 | { | |
367 | struct cfg80211_registered_device *rdev; | |
368 | ||
369 | rdev = container_of(work, struct cfg80211_registered_device, | |
370 | propagate_radar_detect_wk); | |
371 | ||
372 | rtnl_lock(); | |
373 | ||
374 | regulatory_propagate_dfs_state(&rdev->wiphy, &rdev->radar_chandef, | |
375 | NL80211_DFS_UNAVAILABLE, | |
376 | NL80211_RADAR_DETECTED); | |
377 | ||
378 | rtnl_unlock(); | |
379 | } | |
380 | ||
381 | static void cfg80211_propagate_cac_done_wk(struct work_struct *work) | |
382 | { | |
383 | struct cfg80211_registered_device *rdev; | |
384 | ||
385 | rdev = container_of(work, struct cfg80211_registered_device, | |
386 | propagate_cac_done_wk); | |
387 | ||
388 | rtnl_lock(); | |
389 | ||
390 | regulatory_propagate_dfs_state(&rdev->wiphy, &rdev->cac_done_chandef, | |
391 | NL80211_DFS_AVAILABLE, | |
392 | NL80211_RADAR_CAC_FINISHED); | |
393 | ||
394 | rtnl_unlock(); | |
395 | } | |
396 | ||
704232c2 JB |
397 | /* exported functions */ |
398 | ||
1998d90a BG |
399 | struct wiphy *wiphy_new_nm(const struct cfg80211_ops *ops, int sizeof_priv, |
400 | const char *requested_name) | |
704232c2 | 401 | { |
73810b77 | 402 | static atomic_t wiphy_counter = ATOMIC_INIT(0); |
7623225f JB |
403 | |
404 | struct cfg80211_registered_device *rdev; | |
704232c2 JB |
405 | int alloc_size; |
406 | ||
0b20633d JB |
407 | WARN_ON(ops->add_key && (!ops->del_key || !ops->set_default_key)); |
408 | WARN_ON(ops->auth && (!ops->assoc || !ops->deauth || !ops->disassoc)); | |
409 | WARN_ON(ops->connect && !ops->disconnect); | |
410 | WARN_ON(ops->join_ibss && !ops->leave_ibss); | |
411 | WARN_ON(ops->add_virtual_intf && !ops->del_virtual_intf); | |
412 | WARN_ON(ops->add_station && !ops->del_station); | |
413 | WARN_ON(ops->add_mpath && !ops->del_mpath); | |
29cbe68c | 414 | WARN_ON(ops->join_mesh && !ops->leave_mesh); |
de3bb771 OO |
415 | WARN_ON(ops->start_p2p_device && !ops->stop_p2p_device); |
416 | WARN_ON(ops->start_ap && !ops->stop_ap); | |
417 | WARN_ON(ops->join_ocb && !ops->leave_ocb); | |
418 | WARN_ON(ops->suspend && !ops->resume); | |
419 | WARN_ON(ops->sched_scan_start && !ops->sched_scan_stop); | |
420 | WARN_ON(ops->remain_on_channel && !ops->cancel_remain_on_channel); | |
421 | WARN_ON(ops->tdls_channel_switch && !ops->tdls_cancel_channel_switch); | |
422 | WARN_ON(ops->add_tx_ts && !ops->del_tx_ts); | |
41ade00f | 423 | |
79c97e97 | 424 | alloc_size = sizeof(*rdev) + sizeof_priv; |
704232c2 | 425 | |
79c97e97 JB |
426 | rdev = kzalloc(alloc_size, GFP_KERNEL); |
427 | if (!rdev) | |
704232c2 JB |
428 | return NULL; |
429 | ||
79c97e97 | 430 | rdev->ops = ops; |
704232c2 | 431 | |
73810b77 | 432 | rdev->wiphy_idx = atomic_inc_return(&wiphy_counter); |
a4d73ee1 | 433 | |
f4173766 | 434 | if (unlikely(rdev->wiphy_idx < 0)) { |
7623225f | 435 | /* ugh, wrapped! */ |
73810b77 | 436 | atomic_dec(&wiphy_counter); |
79c97e97 | 437 | kfree(rdev); |
704232c2 JB |
438 | return NULL; |
439 | } | |
704232c2 | 440 | |
9b881963 JB |
441 | /* atomic_inc_return makes it start at 1, make it start at 0 */ |
442 | rdev->wiphy_idx--; | |
443 | ||
7623225f | 444 | /* give it a proper name */ |
1998d90a BG |
445 | if (requested_name && requested_name[0]) { |
446 | int rv; | |
447 | ||
448 | rtnl_lock(); | |
449 | rv = cfg80211_dev_check_name(rdev, requested_name); | |
450 | ||
451 | if (rv < 0) { | |
452 | rtnl_unlock(); | |
453 | goto use_default_name; | |
454 | } | |
455 | ||
456 | rv = dev_set_name(&rdev->wiphy.dev, "%s", requested_name); | |
457 | rtnl_unlock(); | |
458 | if (rv) | |
459 | goto use_default_name; | |
460 | } else { | |
59b179b4 JB |
461 | int rv; |
462 | ||
1998d90a BG |
463 | use_default_name: |
464 | /* NOTE: This is *probably* safe w/out holding rtnl because of | |
465 | * the restrictions on phy names. Probably this call could | |
466 | * fail if some other part of the kernel (re)named a device | |
467 | * phyX. But, might should add some locking and check return | |
468 | * value, and use a different name if this one exists? | |
469 | */ | |
59b179b4 JB |
470 | rv = dev_set_name(&rdev->wiphy.dev, PHY_NAME "%d", rdev->wiphy_idx); |
471 | if (rv < 0) { | |
472 | kfree(rdev); | |
473 | return NULL; | |
474 | } | |
1998d90a | 475 | } |
7623225f | 476 | |
53873f13 | 477 | INIT_LIST_HEAD(&rdev->wiphy.wdev_list); |
37c73b5f BG |
478 | INIT_LIST_HEAD(&rdev->beacon_registrations); |
479 | spin_lock_init(&rdev->beacon_registrations_lock); | |
79c97e97 JB |
480 | spin_lock_init(&rdev->bss_lock); |
481 | INIT_LIST_HEAD(&rdev->bss_list); | |
ca986ad9 | 482 | INIT_LIST_HEAD(&rdev->sched_scan_req_list); |
79c97e97 | 483 | INIT_WORK(&rdev->scan_done_wk, __cfg80211_scan_done); |
33d8783c JB |
484 | INIT_LIST_HEAD(&rdev->mlme_unreg); |
485 | spin_lock_init(&rdev->mlme_unreg_lock); | |
486 | INIT_WORK(&rdev->mlme_unreg_wk, cfg80211_mlme_unreg_wk); | |
04f39047 SW |
487 | INIT_DELAYED_WORK(&rdev->dfs_update_channels_wk, |
488 | cfg80211_dfs_channels_update_work); | |
3d23e349 JB |
489 | #ifdef CONFIG_CFG80211_WEXT |
490 | rdev->wiphy.wext = &cfg80211_wext_handler; | |
491 | #endif | |
492 | ||
79c97e97 JB |
493 | device_initialize(&rdev->wiphy.dev); |
494 | rdev->wiphy.dev.class = &ieee80211_class; | |
495 | rdev->wiphy.dev.platform_data = rdev; | |
9f0e1354 | 496 | device_enable_async_suspend(&rdev->wiphy.dev); |
79c97e97 | 497 | |
78f22b6a | 498 | INIT_WORK(&rdev->destroy_work, cfg80211_destroy_iface_wk); |
93a1e86c | 499 | INIT_WORK(&rdev->sched_scan_stop_wk, cfg80211_sched_scan_stop_wk); |
b34939b9 | 500 | INIT_WORK(&rdev->sched_scan_res_wk, cfg80211_sched_scan_results_wk); |
89766727 VT |
501 | INIT_WORK(&rdev->propagate_radar_detect_wk, |
502 | cfg80211_propagate_radar_detect_wk); | |
503 | INIT_WORK(&rdev->propagate_cac_done_wk, cfg80211_propagate_cac_done_wk); | |
78f22b6a | 504 | |
5be83de5 JB |
505 | #ifdef CONFIG_CFG80211_DEFAULT_PS |
506 | rdev->wiphy.flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT; | |
507 | #endif | |
16cb9d42 | 508 | |
463d0183 JB |
509 | wiphy_net_set(&rdev->wiphy, &init_net); |
510 | ||
79c97e97 JB |
511 | rdev->rfkill_ops.set_block = cfg80211_rfkill_set_block; |
512 | rdev->rfkill = rfkill_alloc(dev_name(&rdev->wiphy.dev), | |
513 | &rdev->wiphy.dev, RFKILL_TYPE_WLAN, | |
514 | &rdev->rfkill_ops, rdev); | |
515 | ||
516 | if (!rdev->rfkill) { | |
517 | kfree(rdev); | |
1f87f7d3 JB |
518 | return NULL; |
519 | } | |
520 | ||
79c97e97 JB |
521 | INIT_WORK(&rdev->rfkill_sync, cfg80211_rfkill_sync_work); |
522 | INIT_WORK(&rdev->conn_work, cfg80211_conn_work); | |
523 | INIT_WORK(&rdev->event_work, cfg80211_event_work); | |
1f87f7d3 | 524 | |
ad002395 JB |
525 | init_waitqueue_head(&rdev->dev_wait); |
526 | ||
b9a5f8ca JM |
527 | /* |
528 | * Initialize wiphy parameters to IEEE 802.11 MIB default values. | |
529 | * Fragmentation and RTS threshold are disabled by default with the | |
530 | * special -1 value. | |
531 | */ | |
79c97e97 JB |
532 | rdev->wiphy.retry_short = 7; |
533 | rdev->wiphy.retry_long = 4; | |
534 | rdev->wiphy.frag_threshold = (u32) -1; | |
535 | rdev->wiphy.rts_threshold = (u32) -1; | |
81077e82 | 536 | rdev->wiphy.coverage_class = 0; |
b9a5f8ca | 537 | |
9a774c78 AO |
538 | rdev->wiphy.max_num_csa_counters = 1; |
539 | ||
3b06d277 AS |
540 | rdev->wiphy.max_sched_scan_plans = 1; |
541 | rdev->wiphy.max_sched_scan_plan_interval = U32_MAX; | |
542 | ||
79c97e97 | 543 | return &rdev->wiphy; |
704232c2 | 544 | } |
1998d90a | 545 | EXPORT_SYMBOL(wiphy_new_nm); |
704232c2 | 546 | |
7527a782 JB |
547 | static int wiphy_verify_combinations(struct wiphy *wiphy) |
548 | { | |
549 | const struct ieee80211_iface_combination *c; | |
550 | int i, j; | |
551 | ||
7527a782 JB |
552 | for (i = 0; i < wiphy->n_iface_combinations; i++) { |
553 | u32 cnt = 0; | |
554 | u16 all_iftypes = 0; | |
555 | ||
556 | c = &wiphy->iface_combinations[i]; | |
557 | ||
11c4a075 SW |
558 | /* |
559 | * Combinations with just one interface aren't real, | |
560 | * however we make an exception for DFS. | |
561 | */ | |
562 | if (WARN_ON((c->max_interfaces < 2) && !c->radar_detect_widths)) | |
7527a782 JB |
563 | return -EINVAL; |
564 | ||
565 | /* Need at least one channel */ | |
566 | if (WARN_ON(!c->num_different_channels)) | |
567 | return -EINVAL; | |
568 | ||
d4e50c59 MK |
569 | /* |
570 | * Put a sane limit on maximum number of different | |
571 | * channels to simplify channel accounting code. | |
572 | */ | |
573 | if (WARN_ON(c->num_different_channels > | |
574 | CFG80211_MAX_NUM_DIFFERENT_CHANNELS)) | |
575 | return -EINVAL; | |
576 | ||
11c4a075 SW |
577 | /* DFS only works on one channel. */ |
578 | if (WARN_ON(c->radar_detect_widths && | |
579 | (c->num_different_channels > 1))) | |
580 | return -EINVAL; | |
581 | ||
7527a782 JB |
582 | if (WARN_ON(!c->n_limits)) |
583 | return -EINVAL; | |
584 | ||
585 | for (j = 0; j < c->n_limits; j++) { | |
586 | u16 types = c->limits[j].types; | |
587 | ||
b6a55015 | 588 | /* interface types shouldn't overlap */ |
7527a782 JB |
589 | if (WARN_ON(types & all_iftypes)) |
590 | return -EINVAL; | |
591 | all_iftypes |= types; | |
592 | ||
593 | if (WARN_ON(!c->limits[j].max)) | |
594 | return -EINVAL; | |
595 | ||
596 | /* Shouldn't list software iftypes in combinations! */ | |
597 | if (WARN_ON(wiphy->software_iftypes & types)) | |
598 | return -EINVAL; | |
599 | ||
98104fde JB |
600 | /* Only a single P2P_DEVICE can be allowed */ |
601 | if (WARN_ON(types & BIT(NL80211_IFTYPE_P2P_DEVICE) && | |
602 | c->limits[j].max > 1)) | |
603 | return -EINVAL; | |
604 | ||
cb3b7d87 AB |
605 | /* Only a single NAN can be allowed */ |
606 | if (WARN_ON(types & BIT(NL80211_IFTYPE_NAN) && | |
607 | c->limits[j].max > 1)) | |
608 | return -EINVAL; | |
609 | ||
56271da2 JB |
610 | /* |
611 | * This isn't well-defined right now. If you have an | |
612 | * IBSS interface, then its beacon interval may change | |
613 | * by joining other networks, and nothing prevents it | |
614 | * from doing that. | |
615 | * So technically we probably shouldn't even allow AP | |
616 | * and IBSS in the same interface, but it seems that | |
617 | * some drivers support that, possibly only with fixed | |
618 | * beacon intervals for IBSS. | |
619 | */ | |
620 | if (WARN_ON(types & BIT(NL80211_IFTYPE_ADHOC) && | |
621 | c->beacon_int_min_gcd)) { | |
622 | return -EINVAL; | |
623 | } | |
624 | ||
7527a782 JB |
625 | cnt += c->limits[j].max; |
626 | /* | |
627 | * Don't advertise an unsupported type | |
628 | * in a combination. | |
629 | */ | |
630 | if (WARN_ON((wiphy->interface_modes & types) != types)) | |
631 | return -EINVAL; | |
632 | } | |
633 | ||
8f205423 JB |
634 | #ifndef CONFIG_WIRELESS_WDS |
635 | if (WARN_ON(all_iftypes & BIT(NL80211_IFTYPE_WDS))) | |
636 | return -EINVAL; | |
637 | #endif | |
638 | ||
7527a782 JB |
639 | /* You can't even choose that many! */ |
640 | if (WARN_ON(cnt < c->max_interfaces)) | |
641 | return -EINVAL; | |
642 | } | |
643 | ||
644 | return 0; | |
645 | } | |
646 | ||
704232c2 JB |
647 | int wiphy_register(struct wiphy *wiphy) |
648 | { | |
f26cbf40 | 649 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); |
704232c2 | 650 | int res; |
57fbcce3 | 651 | enum nl80211_band band; |
8318d78a JB |
652 | struct ieee80211_supported_band *sband; |
653 | bool have_band = false; | |
654 | int i; | |
f59ac048 LR |
655 | u16 ifmodes = wiphy->interface_modes; |
656 | ||
dfb89c56 | 657 | #ifdef CONFIG_PM |
964dc9e2 JB |
658 | if (WARN_ON(wiphy->wowlan && |
659 | (wiphy->wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) && | |
660 | !(wiphy->wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY))) | |
661 | return -EINVAL; | |
662 | if (WARN_ON(wiphy->wowlan && | |
663 | !wiphy->wowlan->flags && !wiphy->wowlan->n_patterns && | |
664 | !wiphy->wowlan->tcp)) | |
77dbbb13 | 665 | return -EINVAL; |
dfb89c56 | 666 | #endif |
1057d35e AN |
667 | if (WARN_ON((wiphy->features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH) && |
668 | (!rdev->ops->tdls_channel_switch || | |
669 | !rdev->ops->tdls_cancel_channel_switch))) | |
670 | return -EINVAL; | |
77dbbb13 | 671 | |
cb3b7d87 | 672 | if (WARN_ON((wiphy->interface_modes & BIT(NL80211_IFTYPE_NAN)) && |
a442b761 | 673 | (!rdev->ops->start_nan || !rdev->ops->stop_nan || |
8585989d LC |
674 | !rdev->ops->add_nan_func || !rdev->ops->del_nan_func || |
675 | !(wiphy->nan_supported_bands & BIT(NL80211_BAND_2GHZ))))) | |
cb3b7d87 AB |
676 | return -EINVAL; |
677 | ||
8f205423 JB |
678 | #ifndef CONFIG_WIRELESS_WDS |
679 | if (WARN_ON(wiphy->interface_modes & BIT(NL80211_IFTYPE_WDS))) | |
680 | return -EINVAL; | |
681 | #endif | |
682 | ||
9bb7e0f2 JB |
683 | if (WARN_ON(wiphy->pmsr_capa && !wiphy->pmsr_capa->ftm.supported)) |
684 | return -EINVAL; | |
685 | ||
686 | if (wiphy->pmsr_capa && wiphy->pmsr_capa->ftm.supported) { | |
687 | if (WARN_ON(!wiphy->pmsr_capa->ftm.asap && | |
688 | !wiphy->pmsr_capa->ftm.non_asap)) | |
689 | return -EINVAL; | |
690 | if (WARN_ON(!wiphy->pmsr_capa->ftm.preambles || | |
691 | !wiphy->pmsr_capa->ftm.bandwidths)) | |
692 | return -EINVAL; | |
693 | if (WARN_ON(wiphy->pmsr_capa->ftm.preambles & | |
694 | ~(BIT(NL80211_PREAMBLE_LEGACY) | | |
695 | BIT(NL80211_PREAMBLE_HT) | | |
696 | BIT(NL80211_PREAMBLE_VHT) | | |
697 | BIT(NL80211_PREAMBLE_DMG)))) | |
698 | return -EINVAL; | |
699 | if (WARN_ON(wiphy->pmsr_capa->ftm.bandwidths & | |
700 | ~(BIT(NL80211_CHAN_WIDTH_20_NOHT) | | |
701 | BIT(NL80211_CHAN_WIDTH_20) | | |
702 | BIT(NL80211_CHAN_WIDTH_40) | | |
703 | BIT(NL80211_CHAN_WIDTH_80) | | |
704 | BIT(NL80211_CHAN_WIDTH_80P80) | | |
705 | BIT(NL80211_CHAN_WIDTH_160) | | |
706 | BIT(NL80211_CHAN_WIDTH_5) | | |
707 | BIT(NL80211_CHAN_WIDTH_10)))) | |
708 | return -EINVAL; | |
709 | } | |
710 | ||
ad932f04 AN |
711 | /* |
712 | * if a wiphy has unsupported modes for regulatory channel enforcement, | |
713 | * opt-out of enforcement checking | |
714 | */ | |
715 | if (wiphy->interface_modes & ~(BIT(NL80211_IFTYPE_STATION) | | |
716 | BIT(NL80211_IFTYPE_P2P_CLIENT) | | |
717 | BIT(NL80211_IFTYPE_AP) | | |
718 | BIT(NL80211_IFTYPE_P2P_GO) | | |
719 | BIT(NL80211_IFTYPE_ADHOC) | | |
720 | BIT(NL80211_IFTYPE_P2P_DEVICE) | | |
cb3b7d87 | 721 | BIT(NL80211_IFTYPE_NAN) | |
ad932f04 AN |
722 | BIT(NL80211_IFTYPE_AP_VLAN) | |
723 | BIT(NL80211_IFTYPE_MONITOR))) | |
724 | wiphy->regulatory_flags |= REGULATORY_IGNORE_STALE_KICKOFF; | |
725 | ||
b0d7aa59 JD |
726 | if (WARN_ON((wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED) && |
727 | (wiphy->regulatory_flags & | |
728 | (REGULATORY_CUSTOM_REG | | |
729 | REGULATORY_STRICT_REG | | |
730 | REGULATORY_COUNTRY_IE_FOLLOW_POWER | | |
731 | REGULATORY_COUNTRY_IE_IGNORE)))) | |
732 | return -EINVAL; | |
733 | ||
be29b99a AK |
734 | if (WARN_ON(wiphy->coalesce && |
735 | (!wiphy->coalesce->n_rules || | |
736 | !wiphy->coalesce->n_patterns) && | |
737 | (!wiphy->coalesce->pattern_min_len || | |
738 | wiphy->coalesce->pattern_min_len > | |
739 | wiphy->coalesce->pattern_max_len))) | |
740 | return -EINVAL; | |
741 | ||
562a7480 JB |
742 | if (WARN_ON(wiphy->ap_sme_capa && |
743 | !(wiphy->flags & WIPHY_FLAG_HAVE_AP_SME))) | |
744 | return -EINVAL; | |
745 | ||
ef15aac6 JB |
746 | if (WARN_ON(wiphy->addresses && !wiphy->n_addresses)) |
747 | return -EINVAL; | |
748 | ||
749 | if (WARN_ON(wiphy->addresses && | |
750 | !is_zero_ether_addr(wiphy->perm_addr) && | |
751 | memcmp(wiphy->perm_addr, wiphy->addresses[0].addr, | |
752 | ETH_ALEN))) | |
753 | return -EINVAL; | |
754 | ||
77765eaf VT |
755 | if (WARN_ON(wiphy->max_acl_mac_addrs && |
756 | (!(wiphy->flags & WIPHY_FLAG_HAVE_AP_SME) || | |
757 | !rdev->ops->set_mac_acl))) | |
758 | return -EINVAL; | |
759 | ||
38de03d2 AS |
760 | /* assure only valid behaviours are flagged by driver |
761 | * hence subtract 2 as bit 0 is invalid. | |
762 | */ | |
763 | if (WARN_ON(wiphy->bss_select_support && | |
764 | (wiphy->bss_select_support & ~(BIT(__NL80211_BSS_SELECT_ATTR_AFTER_LAST) - 2)))) | |
765 | return -EINVAL; | |
766 | ||
3a00df57 AS |
767 | if (WARN_ON(wiphy_ext_feature_isset(&rdev->wiphy, |
768 | NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X) && | |
769 | (!rdev->ops->set_pmk || !rdev->ops->del_pmk))) | |
770 | return -EINVAL; | |
771 | ||
7f9a3e15 VK |
772 | if (WARN_ON(!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) && |
773 | rdev->ops->update_connect_params)) | |
774 | return -EINVAL; | |
775 | ||
ef15aac6 JB |
776 | if (wiphy->addresses) |
777 | memcpy(wiphy->perm_addr, wiphy->addresses[0].addr, ETH_ALEN); | |
778 | ||
f59ac048 LR |
779 | /* sanity check ifmodes */ |
780 | WARN_ON(!ifmodes); | |
2e161f78 | 781 | ifmodes &= ((1 << NUM_NL80211_IFTYPES) - 1) & ~1; |
f59ac048 LR |
782 | if (WARN_ON(ifmodes != wiphy->interface_modes)) |
783 | wiphy->interface_modes = ifmodes; | |
8318d78a | 784 | |
7527a782 JB |
785 | res = wiphy_verify_combinations(wiphy); |
786 | if (res) | |
787 | return res; | |
788 | ||
8318d78a | 789 | /* sanity check supported bands/channels */ |
57fbcce3 | 790 | for (band = 0; band < NUM_NL80211_BANDS; band++) { |
c4cbaf79 LC |
791 | u16 types = 0; |
792 | ||
8318d78a JB |
793 | sband = wiphy->bands[band]; |
794 | if (!sband) | |
795 | continue; | |
796 | ||
797 | sband->band = band; | |
3a0c52a6 VK |
798 | if (WARN_ON(!sband->n_channels)) |
799 | return -EINVAL; | |
800 | /* | |
8047d261 | 801 | * on 60GHz band, there are no legacy rates, so |
3a0c52a6 VK |
802 | * n_bitrates is 0 |
803 | */ | |
57fbcce3 | 804 | if (WARN_ON(band != NL80211_BAND_60GHZ && |
3a0c52a6 | 805 | !sband->n_bitrates)) |
881d948c JB |
806 | return -EINVAL; |
807 | ||
40db6c77 AK |
808 | /* |
809 | * Since cfg80211_disable_40mhz_24ghz is global, we can | |
810 | * modify the sband's ht data even if the driver uses a | |
811 | * global structure for that. | |
812 | */ | |
813 | if (cfg80211_disable_40mhz_24ghz && | |
57fbcce3 | 814 | band == NL80211_BAND_2GHZ && |
40db6c77 AK |
815 | sband->ht_cap.ht_supported) { |
816 | sband->ht_cap.cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; | |
817 | sband->ht_cap.cap &= ~IEEE80211_HT_CAP_SGI_40; | |
818 | } | |
819 | ||
881d948c JB |
820 | /* |
821 | * Since we use a u32 for rate bitmaps in | |
822 | * ieee80211_get_response_rate, we cannot | |
823 | * have more than 32 legacy rates. | |
824 | */ | |
825 | if (WARN_ON(sband->n_bitrates > 32)) | |
8318d78a | 826 | return -EINVAL; |
8318d78a JB |
827 | |
828 | for (i = 0; i < sband->n_channels; i++) { | |
829 | sband->channels[i].orig_flags = | |
830 | sband->channels[i].flags; | |
c4a9fafc | 831 | sband->channels[i].orig_mag = INT_MAX; |
8318d78a JB |
832 | sband->channels[i].orig_mpwr = |
833 | sband->channels[i].max_power; | |
834 | sband->channels[i].band = band; | |
835 | } | |
836 | ||
c4cbaf79 LC |
837 | for (i = 0; i < sband->n_iftype_data; i++) { |
838 | const struct ieee80211_sband_iftype_data *iftd; | |
839 | ||
840 | iftd = &sband->iftype_data[i]; | |
841 | ||
842 | if (WARN_ON(!iftd->types_mask)) | |
843 | return -EINVAL; | |
844 | if (WARN_ON(types & iftd->types_mask)) | |
845 | return -EINVAL; | |
846 | ||
847 | /* at least one piece of information must be present */ | |
848 | if (WARN_ON(!iftd->he_cap.has_he)) | |
849 | return -EINVAL; | |
850 | ||
851 | types |= iftd->types_mask; | |
852 | } | |
853 | ||
8318d78a JB |
854 | have_band = true; |
855 | } | |
856 | ||
857 | if (!have_band) { | |
858 | WARN_ON(1); | |
859 | return -EINVAL; | |
860 | } | |
861 | ||
dfb89c56 | 862 | #ifdef CONFIG_PM |
964dc9e2 JB |
863 | if (WARN_ON(rdev->wiphy.wowlan && rdev->wiphy.wowlan->n_patterns && |
864 | (!rdev->wiphy.wowlan->pattern_min_len || | |
865 | rdev->wiphy.wowlan->pattern_min_len > | |
866 | rdev->wiphy.wowlan->pattern_max_len))) | |
867 | return -EINVAL; | |
dfb89c56 | 868 | #endif |
ff1b6e69 | 869 | |
8318d78a JB |
870 | /* check and set up bitrates */ |
871 | ieee80211_set_bitrate_flags(wiphy); | |
872 | ||
00c3a6ed JB |
873 | rdev->wiphy.features |= NL80211_FEATURE_SCAN_FLUSH; |
874 | ||
aa5f66d5 | 875 | rtnl_lock(); |
79c97e97 | 876 | res = device_add(&rdev->wiphy.dev); |
c3d34d5d | 877 | if (res) { |
aa5f66d5 | 878 | rtnl_unlock(); |
c3d34d5d JL |
879 | return res; |
880 | } | |
1f87f7d3 | 881 | |
2f0accc1 | 882 | /* set up regulatory info */ |
57b5ce07 | 883 | wiphy_regulatory_register(wiphy); |
2f0accc1 | 884 | |
5f2aa25e | 885 | list_add_rcu(&rdev->list, &cfg80211_rdev_list); |
f5ea9120 | 886 | cfg80211_rdev_list_generation++; |
704232c2 JB |
887 | |
888 | /* add to debugfs */ | |
79c97e97 JB |
889 | rdev->wiphy.debugfsdir = |
890 | debugfs_create_dir(wiphy_name(&rdev->wiphy), | |
704232c2 | 891 | ieee80211_debugfs_dir); |
79c97e97 JB |
892 | if (IS_ERR(rdev->wiphy.debugfsdir)) |
893 | rdev->wiphy.debugfsdir = NULL; | |
704232c2 | 894 | |
a796dac9 TB |
895 | cfg80211_debugfs_rdev_add(rdev); |
896 | nl80211_notify_wiphy(rdev, NL80211_CMD_NEW_WIPHY); | |
897 | ||
a2f73b6c | 898 | if (wiphy->regulatory_flags & REGULATORY_CUSTOM_REG) { |
73d54c9e LR |
899 | struct regulatory_request request; |
900 | ||
901 | request.wiphy_idx = get_wiphy_idx(wiphy); | |
902 | request.initiator = NL80211_REGDOM_SET_BY_DRIVER; | |
903 | request.alpha2[0] = '9'; | |
904 | request.alpha2[1] = '9'; | |
905 | ||
906 | nl80211_send_reg_change_event(&request); | |
907 | } | |
908 | ||
019ae3a9 KV |
909 | /* Check that nobody globally advertises any capabilities they do not |
910 | * advertise on all possible interface types. | |
911 | */ | |
912 | if (wiphy->extended_capabilities_len && | |
913 | wiphy->num_iftype_ext_capab && | |
914 | wiphy->iftype_ext_capab) { | |
915 | u8 supported_on_all, j; | |
916 | const struct wiphy_iftype_ext_capab *capab; | |
917 | ||
918 | capab = wiphy->iftype_ext_capab; | |
919 | for (j = 0; j < wiphy->extended_capabilities_len; j++) { | |
920 | if (capab[0].extended_capabilities_len > j) | |
921 | supported_on_all = | |
922 | capab[0].extended_capabilities[j]; | |
923 | else | |
924 | supported_on_all = 0x00; | |
925 | for (i = 1; i < wiphy->num_iftype_ext_capab; i++) { | |
926 | if (j >= capab[i].extended_capabilities_len) { | |
927 | supported_on_all = 0x00; | |
928 | break; | |
929 | } | |
930 | supported_on_all &= | |
931 | capab[i].extended_capabilities[j]; | |
932 | } | |
933 | if (WARN_ON(wiphy->extended_capabilities[j] & | |
934 | ~supported_on_all)) | |
935 | break; | |
936 | } | |
937 | } | |
938 | ||
ecb44335 SG |
939 | rdev->wiphy.registered = true; |
940 | rtnl_unlock(); | |
aa5f66d5 JB |
941 | |
942 | res = rfkill_register(rdev->rfkill); | |
943 | if (res) { | |
944 | rfkill_destroy(rdev->rfkill); | |
945 | rdev->rfkill = NULL; | |
946 | wiphy_unregister(&rdev->wiphy); | |
947 | return res; | |
948 | } | |
949 | ||
2f0accc1 | 950 | return 0; |
704232c2 JB |
951 | } |
952 | EXPORT_SYMBOL(wiphy_register); | |
953 | ||
1f87f7d3 JB |
954 | void wiphy_rfkill_start_polling(struct wiphy *wiphy) |
955 | { | |
f26cbf40 | 956 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); |
1f87f7d3 | 957 | |
79c97e97 | 958 | if (!rdev->ops->rfkill_poll) |
1f87f7d3 | 959 | return; |
79c97e97 JB |
960 | rdev->rfkill_ops.poll = cfg80211_rfkill_poll; |
961 | rfkill_resume_polling(rdev->rfkill); | |
1f87f7d3 JB |
962 | } |
963 | EXPORT_SYMBOL(wiphy_rfkill_start_polling); | |
964 | ||
965 | void wiphy_rfkill_stop_polling(struct wiphy *wiphy) | |
966 | { | |
f26cbf40 | 967 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); |
1f87f7d3 | 968 | |
79c97e97 | 969 | rfkill_pause_polling(rdev->rfkill); |
1f87f7d3 JB |
970 | } |
971 | EXPORT_SYMBOL(wiphy_rfkill_stop_polling); | |
972 | ||
704232c2 JB |
973 | void wiphy_unregister(struct wiphy *wiphy) |
974 | { | |
f26cbf40 | 975 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); |
704232c2 | 976 | |
ad002395 JB |
977 | wait_event(rdev->dev_wait, ({ |
978 | int __count; | |
5fe231e8 | 979 | rtnl_lock(); |
ad002395 | 980 | __count = rdev->opencount; |
5fe231e8 | 981 | rtnl_unlock(); |
c4f60846 | 982 | __count == 0; })); |
ad002395 | 983 | |
aa5f66d5 JB |
984 | if (rdev->rfkill) |
985 | rfkill_unregister(rdev->rfkill); | |
256c90de | 986 | |
5fe231e8 | 987 | rtnl_lock(); |
3bb20556 | 988 | nl80211_notify_wiphy(rdev, NL80211_CMD_DEL_WIPHY); |
5fe231e8 JB |
989 | rdev->wiphy.registered = false; |
990 | ||
53873f13 | 991 | WARN_ON(!list_empty(&rdev->wiphy.wdev_list)); |
ad002395 JB |
992 | |
993 | /* | |
994 | * First remove the hardware from everywhere, this makes | |
995 | * it impossible to find from userspace. | |
996 | */ | |
7bcfaf2f | 997 | debugfs_remove_recursive(rdev->wiphy.debugfsdir); |
5f2aa25e JB |
998 | list_del_rcu(&rdev->list); |
999 | synchronize_rcu(); | |
f16bfc1c | 1000 | |
bfead080 LR |
1001 | /* |
1002 | * If this device got a regulatory hint tell core its | |
1003 | * free to listen now to a new shiny device regulatory hint | |
1004 | */ | |
1005 | wiphy_regulatory_deregister(wiphy); | |
3f2355cb | 1006 | |
f5ea9120 | 1007 | cfg80211_rdev_list_generation++; |
79c97e97 | 1008 | device_del(&rdev->wiphy.dev); |
704232c2 | 1009 | |
5fe231e8 | 1010 | rtnl_unlock(); |
6682588a | 1011 | |
36e6fea8 | 1012 | flush_work(&rdev->scan_done_wk); |
6682588a | 1013 | cancel_work_sync(&rdev->conn_work); |
6682588a | 1014 | flush_work(&rdev->event_work); |
04f39047 | 1015 | cancel_delayed_work_sync(&rdev->dfs_update_channels_wk); |
78f22b6a | 1016 | flush_work(&rdev->destroy_work); |
93a1e86c | 1017 | flush_work(&rdev->sched_scan_stop_wk); |
33d8783c | 1018 | flush_work(&rdev->mlme_unreg_wk); |
89766727 VT |
1019 | flush_work(&rdev->propagate_radar_detect_wk); |
1020 | flush_work(&rdev->propagate_cac_done_wk); | |
6d52563f | 1021 | |
6abb9cb9 JB |
1022 | #ifdef CONFIG_PM |
1023 | if (rdev->wiphy.wowlan_config && rdev->ops->set_wakeup) | |
e35e4d28 | 1024 | rdev_set_wakeup(rdev, false); |
6abb9cb9 | 1025 | #endif |
6d52563f | 1026 | cfg80211_rdev_free_wowlan(rdev); |
be29b99a | 1027 | cfg80211_rdev_free_coalesce(rdev); |
704232c2 JB |
1028 | } |
1029 | EXPORT_SYMBOL(wiphy_unregister); | |
1030 | ||
79c97e97 | 1031 | void cfg80211_dev_free(struct cfg80211_registered_device *rdev) |
704232c2 | 1032 | { |
2a519311 | 1033 | struct cfg80211_internal_bss *scan, *tmp; |
37c73b5f | 1034 | struct cfg80211_beacon_registration *reg, *treg; |
79c97e97 | 1035 | rfkill_destroy(rdev->rfkill); |
37c73b5f BG |
1036 | list_for_each_entry_safe(reg, treg, &rdev->beacon_registrations, list) { |
1037 | list_del(®->list); | |
1038 | kfree(reg); | |
1039 | } | |
79c97e97 | 1040 | list_for_each_entry_safe(scan, tmp, &rdev->bss_list, list) |
5b112d3d | 1041 | cfg80211_put_bss(&rdev->wiphy, &scan->pub); |
79c97e97 | 1042 | kfree(rdev); |
704232c2 JB |
1043 | } |
1044 | ||
1045 | void wiphy_free(struct wiphy *wiphy) | |
1046 | { | |
1047 | put_device(&wiphy->dev); | |
1048 | } | |
1049 | EXPORT_SYMBOL(wiphy_free); | |
1050 | ||
1f87f7d3 JB |
1051 | void wiphy_rfkill_set_hw_state(struct wiphy *wiphy, bool blocked) |
1052 | { | |
f26cbf40 | 1053 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); |
1f87f7d3 | 1054 | |
79c97e97 JB |
1055 | if (rfkill_set_hw_state(rdev->rfkill, blocked)) |
1056 | schedule_work(&rdev->rfkill_sync); | |
1f87f7d3 JB |
1057 | } |
1058 | EXPORT_SYMBOL(wiphy_rfkill_set_hw_state); | |
1059 | ||
4a4b8169 AZ |
1060 | void cfg80211_cqm_config_free(struct wireless_dev *wdev) |
1061 | { | |
1062 | kfree(wdev->cqm_config); | |
1063 | wdev->cqm_config = NULL; | |
1064 | } | |
1065 | ||
85dd3da4 | 1066 | static void __cfg80211_unregister_wdev(struct wireless_dev *wdev, bool sync) |
98104fde | 1067 | { |
f26cbf40 | 1068 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); |
98104fde JB |
1069 | |
1070 | ASSERT_RTNL(); | |
1071 | ||
73350424 JB |
1072 | flush_work(&wdev->pmsr_free_wk); |
1073 | ||
7f8ed01e DK |
1074 | nl80211_notify_iface(rdev, wdev, NL80211_CMD_DEL_INTERFACE); |
1075 | ||
98104fde | 1076 | list_del_rcu(&wdev->list); |
85dd3da4 JB |
1077 | if (sync) |
1078 | synchronize_rcu(); | |
98104fde JB |
1079 | rdev->devlist_generation++; |
1080 | ||
85dd3da4 JB |
1081 | cfg80211_mlme_purge_registrations(wdev); |
1082 | ||
98104fde JB |
1083 | switch (wdev->iftype) { |
1084 | case NL80211_IFTYPE_P2P_DEVICE: | |
f9f47529 | 1085 | cfg80211_stop_p2p_device(rdev, wdev); |
98104fde | 1086 | break; |
cb3b7d87 AB |
1087 | case NL80211_IFTYPE_NAN: |
1088 | cfg80211_stop_nan(rdev, wdev); | |
1089 | break; | |
98104fde | 1090 | default: |
98104fde JB |
1091 | break; |
1092 | } | |
4a4b8169 | 1093 | |
85dd3da4 JB |
1094 | #ifdef CONFIG_CFG80211_WEXT |
1095 | kzfree(wdev->wext.keys); | |
1096 | #endif | |
1097 | /* only initialized if we have a netdev */ | |
1098 | if (wdev->netdev) | |
1099 | flush_work(&wdev->disconnect_wk); | |
1100 | ||
4a4b8169 | 1101 | cfg80211_cqm_config_free(wdev); |
98104fde | 1102 | } |
85dd3da4 JB |
1103 | |
1104 | void cfg80211_unregister_wdev(struct wireless_dev *wdev) | |
1105 | { | |
1106 | if (WARN_ON(wdev->netdev)) | |
1107 | return; | |
1108 | ||
1109 | __cfg80211_unregister_wdev(wdev, true); | |
1110 | } | |
98104fde JB |
1111 | EXPORT_SYMBOL(cfg80211_unregister_wdev); |
1112 | ||
f1e3d556 | 1113 | static const struct device_type wiphy_type = { |
053a93dd MH |
1114 | .name = "wlan", |
1115 | }; | |
1116 | ||
dbbae26a MK |
1117 | void cfg80211_update_iface_num(struct cfg80211_registered_device *rdev, |
1118 | enum nl80211_iftype iftype, int num) | |
1119 | { | |
c5a7e582 | 1120 | ASSERT_RTNL(); |
dbbae26a MK |
1121 | |
1122 | rdev->num_running_ifaces += num; | |
1123 | if (iftype == NL80211_IFTYPE_MONITOR) | |
1124 | rdev->num_running_monitor_ifaces += num; | |
dbbae26a MK |
1125 | } |
1126 | ||
f04c2203 MK |
1127 | void __cfg80211_leave(struct cfg80211_registered_device *rdev, |
1128 | struct wireless_dev *wdev) | |
81256969 SG |
1129 | { |
1130 | struct net_device *dev = wdev->netdev; | |
ca986ad9 | 1131 | struct cfg80211_sched_scan_request *pos, *tmp; |
81256969 | 1132 | |
24d584d7 | 1133 | ASSERT_RTNL(); |
f04c2203 | 1134 | ASSERT_WDEV_LOCK(wdev); |
24d584d7 | 1135 | |
9bb7e0f2 JB |
1136 | cfg80211_pmsr_wdev_down(wdev); |
1137 | ||
81256969 SG |
1138 | switch (wdev->iftype) { |
1139 | case NL80211_IFTYPE_ADHOC: | |
f04c2203 | 1140 | __cfg80211_leave_ibss(rdev, dev, true); |
81256969 SG |
1141 | break; |
1142 | case NL80211_IFTYPE_P2P_CLIENT: | |
1143 | case NL80211_IFTYPE_STATION: | |
ca986ad9 AVS |
1144 | list_for_each_entry_safe(pos, tmp, &rdev->sched_scan_req_list, |
1145 | list) { | |
1146 | if (dev == pos->dev) | |
1147 | cfg80211_stop_sched_scan_req(rdev, pos, false); | |
1148 | } | |
81256969 | 1149 | |
81256969 SG |
1150 | #ifdef CONFIG_CFG80211_WEXT |
1151 | kfree(wdev->wext.ie); | |
1152 | wdev->wext.ie = NULL; | |
1153 | wdev->wext.ie_len = 0; | |
1154 | wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC; | |
1155 | #endif | |
83739b03 JB |
1156 | cfg80211_disconnect(rdev, dev, |
1157 | WLAN_REASON_DEAUTH_LEAVING, true); | |
81256969 SG |
1158 | break; |
1159 | case NL80211_IFTYPE_MESH_POINT: | |
f04c2203 | 1160 | __cfg80211_leave_mesh(rdev, dev); |
81256969 SG |
1161 | break; |
1162 | case NL80211_IFTYPE_AP: | |
74418ede | 1163 | case NL80211_IFTYPE_P2P_GO: |
f04c2203 | 1164 | __cfg80211_stop_ap(rdev, dev, true); |
81256969 | 1165 | break; |
6e0bd6c3 RL |
1166 | case NL80211_IFTYPE_OCB: |
1167 | __cfg80211_leave_ocb(rdev, dev); | |
1168 | break; | |
de4fcbad JB |
1169 | case NL80211_IFTYPE_WDS: |
1170 | /* must be handled by mac80211/driver, has no APIs */ | |
1171 | break; | |
1172 | case NL80211_IFTYPE_P2P_DEVICE: | |
cb3b7d87 | 1173 | case NL80211_IFTYPE_NAN: |
de4fcbad JB |
1174 | /* cannot happen, has no netdev */ |
1175 | break; | |
1176 | case NL80211_IFTYPE_AP_VLAN: | |
1177 | case NL80211_IFTYPE_MONITOR: | |
1178 | /* nothing to do */ | |
1179 | break; | |
1180 | case NL80211_IFTYPE_UNSPECIFIED: | |
1181 | case NUM_NL80211_IFTYPES: | |
1182 | /* invalid */ | |
81256969 SG |
1183 | break; |
1184 | } | |
81256969 SG |
1185 | } |
1186 | ||
f04c2203 MK |
1187 | void cfg80211_leave(struct cfg80211_registered_device *rdev, |
1188 | struct wireless_dev *wdev) | |
1189 | { | |
1190 | wdev_lock(wdev); | |
1191 | __cfg80211_leave(rdev, wdev); | |
1192 | wdev_unlock(wdev); | |
1193 | } | |
1194 | ||
1195 | void cfg80211_stop_iface(struct wiphy *wiphy, struct wireless_dev *wdev, | |
1196 | gfp_t gfp) | |
1197 | { | |
1198 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); | |
1199 | struct cfg80211_event *ev; | |
1200 | unsigned long flags; | |
1201 | ||
1202 | trace_cfg80211_stop_iface(wiphy, wdev); | |
1203 | ||
1204 | ev = kzalloc(sizeof(*ev), gfp); | |
1205 | if (!ev) | |
1206 | return; | |
1207 | ||
1208 | ev->type = EVENT_STOPPED; | |
1209 | ||
1210 | spin_lock_irqsave(&wdev->event_lock, flags); | |
1211 | list_add_tail(&ev->list, &wdev->event_list); | |
1212 | spin_unlock_irqrestore(&wdev->event_lock, flags); | |
1213 | queue_work(cfg80211_wq, &rdev->event_work); | |
1214 | } | |
1215 | EXPORT_SYMBOL(cfg80211_stop_iface); | |
1216 | ||
e4d4216e JB |
1217 | void cfg80211_init_wdev(struct cfg80211_registered_device *rdev, |
1218 | struct wireless_dev *wdev) | |
1219 | { | |
1220 | mutex_init(&wdev->mtx); | |
1221 | INIT_LIST_HEAD(&wdev->event_list); | |
1222 | spin_lock_init(&wdev->event_lock); | |
1223 | INIT_LIST_HEAD(&wdev->mgmt_registrations); | |
1224 | spin_lock_init(&wdev->mgmt_registrations_lock); | |
9bb7e0f2 JB |
1225 | INIT_LIST_HEAD(&wdev->pmsr_list); |
1226 | spin_lock_init(&wdev->pmsr_lock); | |
1227 | INIT_WORK(&wdev->pmsr_free_wk, cfg80211_pmsr_free_wk); | |
e4d4216e JB |
1228 | |
1229 | /* | |
1230 | * We get here also when the interface changes network namespaces, | |
1231 | * as it's registered into the new one, but we don't want it to | |
1232 | * change ID in that case. Checking if the ID is already assigned | |
1233 | * works, because 0 isn't considered a valid ID and the memory is | |
1234 | * 0-initialized. | |
1235 | */ | |
1236 | if (!wdev->identifier) | |
1237 | wdev->identifier = ++rdev->wdev_id; | |
1238 | list_add_rcu(&wdev->list, &rdev->wiphy.wdev_list); | |
1239 | rdev->devlist_generation++; | |
ec8f170b JB |
1240 | |
1241 | nl80211_notify_iface(rdev, wdev, NL80211_CMD_NEW_INTERFACE); | |
e4d4216e JB |
1242 | } |
1243 | ||
c4f60846 | 1244 | static int cfg80211_netdev_notifier_call(struct notifier_block *nb, |
351638e7 | 1245 | unsigned long state, void *ptr) |
704232c2 | 1246 | { |
351638e7 | 1247 | struct net_device *dev = netdev_notifier_info_to_dev(ptr); |
2a783c13 | 1248 | struct wireless_dev *wdev = dev->ieee80211_ptr; |
704232c2 | 1249 | struct cfg80211_registered_device *rdev; |
ca986ad9 | 1250 | struct cfg80211_sched_scan_request *pos, *tmp; |
704232c2 | 1251 | |
2a783c13 | 1252 | if (!wdev) |
1f87f7d3 | 1253 | return NOTIFY_DONE; |
704232c2 | 1254 | |
f26cbf40 | 1255 | rdev = wiphy_to_rdev(wdev->wiphy); |
704232c2 | 1256 | |
2a783c13 | 1257 | WARN_ON(wdev->iftype == NL80211_IFTYPE_UNSPECIFIED); |
60719ffd | 1258 | |
704232c2 | 1259 | switch (state) { |
053a93dd MH |
1260 | case NETDEV_POST_INIT: |
1261 | SET_NETDEV_DEVTYPE(dev, &wiphy_type); | |
1262 | break; | |
704232c2 | 1263 | case NETDEV_REGISTER: |
0ff6ce7b JB |
1264 | /* |
1265 | * NB: cannot take rdev->mtx here because this may be | |
1266 | * called within code protected by it when interfaces | |
1267 | * are added with nl80211. | |
1268 | */ | |
463d0183 JB |
1269 | /* can only change netns with wiphy */ |
1270 | dev->features |= NETIF_F_NETNS_LOCAL; | |
1271 | ||
704232c2 JB |
1272 | if (sysfs_create_link(&dev->dev.kobj, &rdev->wiphy.dev.kobj, |
1273 | "phy80211")) { | |
e9c0268f | 1274 | pr_err("failed to add phy80211 symlink to netdev!\n"); |
704232c2 | 1275 | } |
2a783c13 | 1276 | wdev->netdev = dev; |
3d23e349 | 1277 | #ifdef CONFIG_CFG80211_WEXT |
2a783c13 JB |
1278 | wdev->wext.default_key = -1; |
1279 | wdev->wext.default_mgmt_key = -1; | |
f2129354 | 1280 | wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC; |
ffb9eb3d KV |
1281 | #endif |
1282 | ||
5be83de5 | 1283 | if (wdev->wiphy->flags & WIPHY_FLAG_PS_ON_BY_DEFAULT) |
ffb9eb3d | 1284 | wdev->ps = true; |
5be83de5 | 1285 | else |
ffb9eb3d | 1286 | wdev->ps = false; |
9043f3b8 JO |
1287 | /* allow mac80211 to determine the timeout */ |
1288 | wdev->ps_timeout = -1; | |
ffb9eb3d | 1289 | |
ad4bb6f8 | 1290 | if ((wdev->iftype == NL80211_IFTYPE_STATION || |
074ac8df | 1291 | wdev->iftype == NL80211_IFTYPE_P2P_CLIENT || |
ad4bb6f8 JB |
1292 | wdev->iftype == NL80211_IFTYPE_ADHOC) && !wdev->use_4addr) |
1293 | dev->priv_flags |= IFF_DONT_BRIDGE; | |
896ff063 | 1294 | |
bd2522b1 AZ |
1295 | INIT_WORK(&wdev->disconnect_wk, cfg80211_autodisconnect_wk); |
1296 | ||
ec8f170b | 1297 | cfg80211_init_wdev(rdev, wdev); |
704232c2 | 1298 | break; |
04a773ad | 1299 | case NETDEV_GOING_DOWN: |
81256969 | 1300 | cfg80211_leave(rdev, wdev); |
01a0ac41 JB |
1301 | break; |
1302 | case NETDEV_DOWN: | |
dbbae26a | 1303 | cfg80211_update_iface_num(rdev, wdev->iftype, -1); |
a617302c JB |
1304 | if (rdev->scan_req && rdev->scan_req->wdev == wdev) { |
1305 | if (WARN_ON(!rdev->scan_req->notified)) | |
1d76250b | 1306 | rdev->scan_req->info.aborted = true; |
f9d15d16 | 1307 | ___cfg80211_scan_done(rdev, false); |
a617302c | 1308 | } |
5fe231e8 | 1309 | |
ca986ad9 AVS |
1310 | list_for_each_entry_safe(pos, tmp, |
1311 | &rdev->sched_scan_req_list, list) { | |
d25d062f | 1312 | if (WARN_ON(pos->dev == wdev->netdev)) |
ca986ad9 | 1313 | cfg80211_stop_sched_scan_req(rdev, pos, false); |
5fe231e8 JB |
1314 | } |
1315 | ||
1316 | rdev->opencount--; | |
1317 | wake_up(&rdev->dev_wait); | |
04a773ad JB |
1318 | break; |
1319 | case NETDEV_UP: | |
4290cb4b | 1320 | cfg80211_update_iface_num(rdev, wdev->iftype, 1); |
667503dd | 1321 | wdev_lock(wdev); |
f2129354 | 1322 | switch (wdev->iftype) { |
29cbe68c | 1323 | #ifdef CONFIG_CFG80211_WEXT |
f2129354 | 1324 | case NL80211_IFTYPE_ADHOC: |
fffd0934 | 1325 | cfg80211_ibss_wext_join(rdev, wdev); |
04a773ad | 1326 | break; |
f2129354 | 1327 | case NL80211_IFTYPE_STATION: |
fffd0934 | 1328 | cfg80211_mgd_wext_connect(rdev, wdev); |
f2129354 | 1329 | break; |
29cbe68c | 1330 | #endif |
c80d545d | 1331 | #ifdef CONFIG_MAC80211_MESH |
29cbe68c | 1332 | case NL80211_IFTYPE_MESH_POINT: |
c80d545d JC |
1333 | { |
1334 | /* backward compat code... */ | |
1335 | struct mesh_setup setup; | |
1336 | memcpy(&setup, &default_mesh_setup, | |
1337 | sizeof(setup)); | |
1338 | /* back compat only needed for mesh_id */ | |
1339 | setup.mesh_id = wdev->ssid; | |
1340 | setup.mesh_id_len = wdev->mesh_id_up_len; | |
1341 | if (wdev->mesh_id_up_len) | |
1342 | __cfg80211_join_mesh(rdev, dev, | |
1343 | &setup, | |
1344 | &default_mesh_config); | |
1345 | break; | |
1346 | } | |
1347 | #endif | |
f2129354 | 1348 | default: |
04a773ad | 1349 | break; |
f2129354 | 1350 | } |
667503dd | 1351 | wdev_unlock(wdev); |
ad002395 | 1352 | rdev->opencount++; |
bf6a0579 JO |
1353 | |
1354 | /* | |
1355 | * Configure power management to the driver here so that its | |
1356 | * correctly set also after interface type changes etc. | |
1357 | */ | |
5966f2dd EP |
1358 | if ((wdev->iftype == NL80211_IFTYPE_STATION || |
1359 | wdev->iftype == NL80211_IFTYPE_P2P_CLIENT) && | |
d4f29978 JB |
1360 | rdev->ops->set_power_mgmt && |
1361 | rdev_set_power_mgmt(rdev, dev, wdev->ps, | |
1362 | wdev->ps_timeout)) { | |
1363 | /* assume this means it's off */ | |
1364 | wdev->ps = false; | |
1365 | } | |
2a783c13 | 1366 | break; |
704232c2 | 1367 | case NETDEV_UNREGISTER: |
e40cbdac JB |
1368 | /* |
1369 | * It is possible to get NETDEV_UNREGISTER | |
1370 | * multiple times. To detect that, check | |
1371 | * that the interface is still on the list | |
1372 | * of registered interfaces, and only then | |
1373 | * remove and clean it up. | |
1374 | */ | |
2a783c13 | 1375 | if (!list_empty(&wdev->list)) { |
85dd3da4 | 1376 | __cfg80211_unregister_wdev(wdev, false); |
704232c2 | 1377 | sysfs_remove_link(&dev->dev.kobj, "phy80211"); |
e40cbdac | 1378 | } |
5f2aa25e JB |
1379 | /* |
1380 | * synchronise (so that we won't find this netdev | |
1381 | * from other code any more) and then clear the list | |
1382 | * head so that the above code can safely check for | |
1383 | * !list_empty() to avoid double-cleanup. | |
1384 | */ | |
1385 | synchronize_rcu(); | |
1386 | INIT_LIST_HEAD(&wdev->list); | |
1f6fc43e DD |
1387 | /* |
1388 | * Ensure that all events have been processed and | |
1389 | * freed. | |
1390 | */ | |
1391 | cfg80211_process_wdev_events(wdev); | |
f9bef3df BG |
1392 | |
1393 | if (WARN_ON(wdev->current_bss)) { | |
1394 | cfg80211_unhold_bss(wdev->current_bss); | |
1395 | cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub); | |
1396 | wdev->current_bss = NULL; | |
1397 | } | |
704232c2 | 1398 | break; |
1f87f7d3 | 1399 | case NETDEV_PRE_UP: |
0b20633d JB |
1400 | if (!(wdev->wiphy->interface_modes & BIT(wdev->iftype))) |
1401 | return notifier_from_errno(-EOPNOTSUPP); | |
b6a55015 LC |
1402 | if (rfkill_blocked(rdev->rfkill)) |
1403 | return notifier_from_errno(-ERFKILL); | |
1f87f7d3 | 1404 | break; |
6784c7db ZG |
1405 | default: |
1406 | return NOTIFY_DONE; | |
704232c2 JB |
1407 | } |
1408 | ||
cb150b9d JB |
1409 | wireless_nlevent_flush(); |
1410 | ||
6784c7db | 1411 | return NOTIFY_OK; |
704232c2 JB |
1412 | } |
1413 | ||
1414 | static struct notifier_block cfg80211_netdev_notifier = { | |
1415 | .notifier_call = cfg80211_netdev_notifier_call, | |
1416 | }; | |
1417 | ||
463d0183 JB |
1418 | static void __net_exit cfg80211_pernet_exit(struct net *net) |
1419 | { | |
1420 | struct cfg80211_registered_device *rdev; | |
1421 | ||
1422 | rtnl_lock(); | |
463d0183 JB |
1423 | list_for_each_entry(rdev, &cfg80211_rdev_list, list) { |
1424 | if (net_eq(wiphy_net(&rdev->wiphy), net)) | |
1425 | WARN_ON(cfg80211_switch_netns(rdev, &init_net)); | |
1426 | } | |
463d0183 JB |
1427 | rtnl_unlock(); |
1428 | } | |
1429 | ||
1430 | static struct pernet_operations cfg80211_pernet_ops = { | |
1431 | .exit = cfg80211_pernet_exit, | |
1432 | }; | |
1433 | ||
1434 | static int __init cfg80211_init(void) | |
704232c2 | 1435 | { |
b2e1b302 LR |
1436 | int err; |
1437 | ||
463d0183 JB |
1438 | err = register_pernet_device(&cfg80211_pernet_ops); |
1439 | if (err) | |
1440 | goto out_fail_pernet; | |
1441 | ||
b2e1b302 | 1442 | err = wiphy_sysfs_init(); |
704232c2 JB |
1443 | if (err) |
1444 | goto out_fail_sysfs; | |
1445 | ||
1446 | err = register_netdevice_notifier(&cfg80211_netdev_notifier); | |
1447 | if (err) | |
1448 | goto out_fail_notifier; | |
1449 | ||
55682965 JB |
1450 | err = nl80211_init(); |
1451 | if (err) | |
1452 | goto out_fail_nl80211; | |
1453 | ||
704232c2 JB |
1454 | ieee80211_debugfs_dir = debugfs_create_dir("ieee80211", NULL); |
1455 | ||
b2e1b302 LR |
1456 | err = regulatory_init(); |
1457 | if (err) | |
1458 | goto out_fail_reg; | |
1459 | ||
e4819013 | 1460 | cfg80211_wq = alloc_ordered_workqueue("cfg80211", WQ_MEM_RECLAIM); |
f00f188f WY |
1461 | if (!cfg80211_wq) { |
1462 | err = -ENOMEM; | |
e60d7443 | 1463 | goto out_fail_wq; |
f00f188f | 1464 | } |
e60d7443 | 1465 | |
704232c2 JB |
1466 | return 0; |
1467 | ||
e60d7443 AB |
1468 | out_fail_wq: |
1469 | regulatory_exit(); | |
b2e1b302 LR |
1470 | out_fail_reg: |
1471 | debugfs_remove(ieee80211_debugfs_dir); | |
81daf735 | 1472 | nl80211_exit(); |
55682965 JB |
1473 | out_fail_nl80211: |
1474 | unregister_netdevice_notifier(&cfg80211_netdev_notifier); | |
704232c2 JB |
1475 | out_fail_notifier: |
1476 | wiphy_sysfs_exit(); | |
1477 | out_fail_sysfs: | |
463d0183 JB |
1478 | unregister_pernet_device(&cfg80211_pernet_ops); |
1479 | out_fail_pernet: | |
704232c2 JB |
1480 | return err; |
1481 | } | |
007f6c5e | 1482 | fs_initcall(cfg80211_init); |
704232c2 | 1483 | |
f884e387 | 1484 | static void __exit cfg80211_exit(void) |
704232c2 JB |
1485 | { |
1486 | debugfs_remove(ieee80211_debugfs_dir); | |
55682965 | 1487 | nl80211_exit(); |
704232c2 JB |
1488 | unregister_netdevice_notifier(&cfg80211_netdev_notifier); |
1489 | wiphy_sysfs_exit(); | |
b2e1b302 | 1490 | regulatory_exit(); |
463d0183 | 1491 | unregister_pernet_device(&cfg80211_pernet_ops); |
e60d7443 | 1492 | destroy_workqueue(cfg80211_wq); |
704232c2 JB |
1493 | } |
1494 | module_exit(cfg80211_exit); |