Commit | Line | Data |
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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 |
461ce35d | 8 | * Copyright (C) 2018-2020 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 | |
0bbab5f0 | 145 | if (!IS_ERR_OR_NULL(rdev->wiphy.debugfsdir)) |
d82574a8 GKH |
146 | debugfs_rename(rdev->wiphy.debugfsdir->d_parent, |
147 | rdev->wiphy.debugfsdir, | |
148 | rdev->wiphy.debugfsdir->d_parent, 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 | ||
c90b670b MW |
193 | list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) { |
194 | if (!wdev->netdev) | |
195 | continue; | |
196 | nl80211_notify_iface(rdev, wdev, NL80211_CMD_DEL_INTERFACE); | |
197 | } | |
198 | nl80211_notify_wiphy(rdev, NL80211_CMD_DEL_WIPHY); | |
199 | ||
463d0183 JB |
200 | wiphy_net_set(&rdev->wiphy, net); |
201 | ||
04600794 JB |
202 | err = device_rename(&rdev->wiphy.dev, dev_name(&rdev->wiphy.dev)); |
203 | WARN_ON(err); | |
204 | ||
c90b670b MW |
205 | nl80211_notify_wiphy(rdev, NL80211_CMD_NEW_WIPHY); |
206 | list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) { | |
207 | if (!wdev->netdev) | |
208 | continue; | |
209 | nl80211_notify_iface(rdev, wdev, NL80211_CMD_NEW_INTERFACE); | |
210 | } | |
211 | ||
04600794 | 212 | return 0; |
463d0183 JB |
213 | } |
214 | ||
1f87f7d3 JB |
215 | static void cfg80211_rfkill_poll(struct rfkill *rfkill, void *data) |
216 | { | |
79c97e97 | 217 | struct cfg80211_registered_device *rdev = data; |
1f87f7d3 | 218 | |
e35e4d28 | 219 | rdev_rfkill_poll(rdev); |
1f87f7d3 JB |
220 | } |
221 | ||
f9f47529 JB |
222 | void cfg80211_stop_p2p_device(struct cfg80211_registered_device *rdev, |
223 | struct wireless_dev *wdev) | |
224 | { | |
5fe231e8 | 225 | ASSERT_RTNL(); |
f9f47529 JB |
226 | |
227 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)) | |
228 | return; | |
229 | ||
73c7da3d | 230 | if (!wdev_running(wdev)) |
f9f47529 JB |
231 | return; |
232 | ||
233 | rdev_stop_p2p_device(rdev, wdev); | |
73c7da3d | 234 | wdev->is_running = false; |
f9f47529 JB |
235 | |
236 | rdev->opencount--; | |
237 | ||
a617302c JB |
238 | if (rdev->scan_req && rdev->scan_req->wdev == wdev) { |
239 | if (WARN_ON(!rdev->scan_req->notified)) | |
1d76250b | 240 | rdev->scan_req->info.aborted = true; |
f9d15d16 | 241 | ___cfg80211_scan_done(rdev, false); |
a617302c | 242 | } |
f9f47529 JB |
243 | } |
244 | ||
cb3b7d87 AB |
245 | void cfg80211_stop_nan(struct cfg80211_registered_device *rdev, |
246 | struct wireless_dev *wdev) | |
247 | { | |
248 | ASSERT_RTNL(); | |
249 | ||
250 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_NAN)) | |
251 | return; | |
252 | ||
73c7da3d | 253 | if (!wdev_running(wdev)) |
cb3b7d87 AB |
254 | return; |
255 | ||
256 | rdev_stop_nan(rdev, wdev); | |
73c7da3d | 257 | wdev->is_running = false; |
cb3b7d87 AB |
258 | |
259 | rdev->opencount--; | |
260 | } | |
261 | ||
f6837ba8 | 262 | void cfg80211_shutdown_all_interfaces(struct wiphy *wiphy) |
1f87f7d3 | 263 | { |
f6837ba8 | 264 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); |
1f87f7d3 JB |
265 | struct wireless_dev *wdev; |
266 | ||
f6837ba8 | 267 | ASSERT_RTNL(); |
f9f47529 | 268 | |
53873f13 | 269 | list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) { |
98104fde | 270 | if (wdev->netdev) { |
ba22fb5b | 271 | dev_close(wdev->netdev); |
98104fde JB |
272 | continue; |
273 | } | |
274 | /* otherwise, check iftype */ | |
275 | switch (wdev->iftype) { | |
276 | case NL80211_IFTYPE_P2P_DEVICE: | |
f9f47529 | 277 | cfg80211_stop_p2p_device(rdev, wdev); |
98104fde | 278 | break; |
cb3b7d87 AB |
279 | case NL80211_IFTYPE_NAN: |
280 | cfg80211_stop_nan(rdev, wdev); | |
281 | break; | |
98104fde JB |
282 | default: |
283 | break; | |
284 | } | |
285 | } | |
f6837ba8 JB |
286 | } |
287 | EXPORT_SYMBOL_GPL(cfg80211_shutdown_all_interfaces); | |
1f87f7d3 | 288 | |
f6837ba8 JB |
289 | static int cfg80211_rfkill_set_block(void *data, bool blocked) |
290 | { | |
291 | struct cfg80211_registered_device *rdev = data; | |
292 | ||
293 | if (!blocked) | |
294 | return 0; | |
295 | ||
296 | rtnl_lock(); | |
297 | cfg80211_shutdown_all_interfaces(&rdev->wiphy); | |
1f87f7d3 JB |
298 | rtnl_unlock(); |
299 | ||
300 | return 0; | |
301 | } | |
302 | ||
3cfe91c4 | 303 | static void cfg80211_rfkill_block_work(struct work_struct *work) |
1f87f7d3 | 304 | { |
79c97e97 | 305 | struct cfg80211_registered_device *rdev; |
1f87f7d3 | 306 | |
3cfe91c4 JB |
307 | rdev = container_of(work, struct cfg80211_registered_device, |
308 | rfkill_block); | |
309 | cfg80211_rfkill_set_block(rdev, true); | |
1f87f7d3 JB |
310 | } |
311 | ||
667503dd JB |
312 | static void cfg80211_event_work(struct work_struct *work) |
313 | { | |
314 | struct cfg80211_registered_device *rdev; | |
667503dd JB |
315 | |
316 | rdev = container_of(work, struct cfg80211_registered_device, | |
317 | event_work); | |
318 | ||
319 | rtnl_lock(); | |
3d54d255 | 320 | cfg80211_process_rdev_events(rdev); |
667503dd JB |
321 | rtnl_unlock(); |
322 | } | |
323 | ||
78f22b6a JB |
324 | void cfg80211_destroy_ifaces(struct cfg80211_registered_device *rdev) |
325 | { | |
ab81007a | 326 | struct wireless_dev *wdev, *tmp; |
78f22b6a JB |
327 | |
328 | ASSERT_RTNL(); | |
329 | ||
ab81007a JB |
330 | list_for_each_entry_safe(wdev, tmp, &rdev->wiphy.wdev_list, list) { |
331 | if (wdev->nl_owner_dead) | |
332 | rdev_del_virtual_intf(rdev, wdev); | |
78f22b6a | 333 | } |
78f22b6a JB |
334 | } |
335 | ||
336 | static void cfg80211_destroy_iface_wk(struct work_struct *work) | |
337 | { | |
338 | struct cfg80211_registered_device *rdev; | |
339 | ||
340 | rdev = container_of(work, struct cfg80211_registered_device, | |
341 | destroy_work); | |
342 | ||
343 | rtnl_lock(); | |
344 | cfg80211_destroy_ifaces(rdev); | |
345 | rtnl_unlock(); | |
346 | } | |
347 | ||
93a1e86c JR |
348 | static void cfg80211_sched_scan_stop_wk(struct work_struct *work) |
349 | { | |
350 | struct cfg80211_registered_device *rdev; | |
ca986ad9 | 351 | struct cfg80211_sched_scan_request *req, *tmp; |
93a1e86c JR |
352 | |
353 | rdev = container_of(work, struct cfg80211_registered_device, | |
354 | sched_scan_stop_wk); | |
355 | ||
356 | rtnl_lock(); | |
ca986ad9 AVS |
357 | list_for_each_entry_safe(req, tmp, &rdev->sched_scan_req_list, list) { |
358 | if (req->nl_owner_dead) | |
359 | cfg80211_stop_sched_scan_req(rdev, req, false); | |
360 | } | |
93a1e86c JR |
361 | rtnl_unlock(); |
362 | } | |
363 | ||
89766727 VT |
364 | static void cfg80211_propagate_radar_detect_wk(struct work_struct *work) |
365 | { | |
366 | struct cfg80211_registered_device *rdev; | |
367 | ||
368 | rdev = container_of(work, struct cfg80211_registered_device, | |
369 | propagate_radar_detect_wk); | |
370 | ||
371 | rtnl_lock(); | |
372 | ||
373 | regulatory_propagate_dfs_state(&rdev->wiphy, &rdev->radar_chandef, | |
374 | NL80211_DFS_UNAVAILABLE, | |
375 | NL80211_RADAR_DETECTED); | |
376 | ||
377 | rtnl_unlock(); | |
378 | } | |
379 | ||
380 | static void cfg80211_propagate_cac_done_wk(struct work_struct *work) | |
381 | { | |
382 | struct cfg80211_registered_device *rdev; | |
383 | ||
384 | rdev = container_of(work, struct cfg80211_registered_device, | |
385 | propagate_cac_done_wk); | |
386 | ||
387 | rtnl_lock(); | |
388 | ||
389 | regulatory_propagate_dfs_state(&rdev->wiphy, &rdev->cac_done_chandef, | |
390 | NL80211_DFS_AVAILABLE, | |
391 | NL80211_RADAR_CAC_FINISHED); | |
392 | ||
393 | rtnl_unlock(); | |
394 | } | |
395 | ||
704232c2 JB |
396 | /* exported functions */ |
397 | ||
1998d90a BG |
398 | struct wiphy *wiphy_new_nm(const struct cfg80211_ops *ops, int sizeof_priv, |
399 | const char *requested_name) | |
704232c2 | 400 | { |
73810b77 | 401 | static atomic_t wiphy_counter = ATOMIC_INIT(0); |
7623225f JB |
402 | |
403 | struct cfg80211_registered_device *rdev; | |
704232c2 JB |
404 | int alloc_size; |
405 | ||
0b20633d JB |
406 | WARN_ON(ops->add_key && (!ops->del_key || !ops->set_default_key)); |
407 | WARN_ON(ops->auth && (!ops->assoc || !ops->deauth || !ops->disassoc)); | |
408 | WARN_ON(ops->connect && !ops->disconnect); | |
409 | WARN_ON(ops->join_ibss && !ops->leave_ibss); | |
410 | WARN_ON(ops->add_virtual_intf && !ops->del_virtual_intf); | |
411 | WARN_ON(ops->add_station && !ops->del_station); | |
412 | WARN_ON(ops->add_mpath && !ops->del_mpath); | |
29cbe68c | 413 | WARN_ON(ops->join_mesh && !ops->leave_mesh); |
de3bb771 OO |
414 | WARN_ON(ops->start_p2p_device && !ops->stop_p2p_device); |
415 | WARN_ON(ops->start_ap && !ops->stop_ap); | |
416 | WARN_ON(ops->join_ocb && !ops->leave_ocb); | |
417 | WARN_ON(ops->suspend && !ops->resume); | |
418 | WARN_ON(ops->sched_scan_start && !ops->sched_scan_stop); | |
419 | WARN_ON(ops->remain_on_channel && !ops->cancel_remain_on_channel); | |
420 | WARN_ON(ops->tdls_channel_switch && !ops->tdls_cancel_channel_switch); | |
421 | WARN_ON(ops->add_tx_ts && !ops->del_tx_ts); | |
41ade00f | 422 | |
79c97e97 | 423 | alloc_size = sizeof(*rdev) + sizeof_priv; |
704232c2 | 424 | |
79c97e97 JB |
425 | rdev = kzalloc(alloc_size, GFP_KERNEL); |
426 | if (!rdev) | |
704232c2 JB |
427 | return NULL; |
428 | ||
79c97e97 | 429 | rdev->ops = ops; |
704232c2 | 430 | |
73810b77 | 431 | rdev->wiphy_idx = atomic_inc_return(&wiphy_counter); |
a4d73ee1 | 432 | |
f4173766 | 433 | if (unlikely(rdev->wiphy_idx < 0)) { |
7623225f | 434 | /* ugh, wrapped! */ |
73810b77 | 435 | atomic_dec(&wiphy_counter); |
79c97e97 | 436 | kfree(rdev); |
704232c2 JB |
437 | return NULL; |
438 | } | |
704232c2 | 439 | |
9b881963 JB |
440 | /* atomic_inc_return makes it start at 1, make it start at 0 */ |
441 | rdev->wiphy_idx--; | |
442 | ||
7623225f | 443 | /* give it a proper name */ |
1998d90a BG |
444 | if (requested_name && requested_name[0]) { |
445 | int rv; | |
446 | ||
447 | rtnl_lock(); | |
448 | rv = cfg80211_dev_check_name(rdev, requested_name); | |
449 | ||
450 | if (rv < 0) { | |
451 | rtnl_unlock(); | |
452 | goto use_default_name; | |
453 | } | |
454 | ||
455 | rv = dev_set_name(&rdev->wiphy.dev, "%s", requested_name); | |
456 | rtnl_unlock(); | |
457 | if (rv) | |
458 | goto use_default_name; | |
459 | } else { | |
59b179b4 JB |
460 | int rv; |
461 | ||
1998d90a BG |
462 | use_default_name: |
463 | /* NOTE: This is *probably* safe w/out holding rtnl because of | |
464 | * the restrictions on phy names. Probably this call could | |
465 | * fail if some other part of the kernel (re)named a device | |
466 | * phyX. But, might should add some locking and check return | |
467 | * value, and use a different name if this one exists? | |
468 | */ | |
59b179b4 JB |
469 | rv = dev_set_name(&rdev->wiphy.dev, PHY_NAME "%d", rdev->wiphy_idx); |
470 | if (rv < 0) { | |
471 | kfree(rdev); | |
472 | return NULL; | |
473 | } | |
1998d90a | 474 | } |
7623225f | 475 | |
53873f13 | 476 | INIT_LIST_HEAD(&rdev->wiphy.wdev_list); |
37c73b5f BG |
477 | INIT_LIST_HEAD(&rdev->beacon_registrations); |
478 | spin_lock_init(&rdev->beacon_registrations_lock); | |
79c97e97 JB |
479 | spin_lock_init(&rdev->bss_lock); |
480 | INIT_LIST_HEAD(&rdev->bss_list); | |
ca986ad9 | 481 | INIT_LIST_HEAD(&rdev->sched_scan_req_list); |
79c97e97 | 482 | INIT_WORK(&rdev->scan_done_wk, __cfg80211_scan_done); |
04f39047 SW |
483 | INIT_DELAYED_WORK(&rdev->dfs_update_channels_wk, |
484 | cfg80211_dfs_channels_update_work); | |
3d23e349 JB |
485 | #ifdef CONFIG_CFG80211_WEXT |
486 | rdev->wiphy.wext = &cfg80211_wext_handler; | |
487 | #endif | |
488 | ||
79c97e97 JB |
489 | device_initialize(&rdev->wiphy.dev); |
490 | rdev->wiphy.dev.class = &ieee80211_class; | |
491 | rdev->wiphy.dev.platform_data = rdev; | |
9f0e1354 | 492 | device_enable_async_suspend(&rdev->wiphy.dev); |
79c97e97 | 493 | |
78f22b6a | 494 | INIT_WORK(&rdev->destroy_work, cfg80211_destroy_iface_wk); |
93a1e86c | 495 | INIT_WORK(&rdev->sched_scan_stop_wk, cfg80211_sched_scan_stop_wk); |
b34939b9 | 496 | INIT_WORK(&rdev->sched_scan_res_wk, cfg80211_sched_scan_results_wk); |
89766727 VT |
497 | INIT_WORK(&rdev->propagate_radar_detect_wk, |
498 | cfg80211_propagate_radar_detect_wk); | |
499 | INIT_WORK(&rdev->propagate_cac_done_wk, cfg80211_propagate_cac_done_wk); | |
79ea1e12 JB |
500 | INIT_WORK(&rdev->mgmt_registrations_update_wk, |
501 | cfg80211_mgmt_registrations_update_wk); | |
78f22b6a | 502 | |
5be83de5 JB |
503 | #ifdef CONFIG_CFG80211_DEFAULT_PS |
504 | rdev->wiphy.flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT; | |
505 | #endif | |
16cb9d42 | 506 | |
463d0183 JB |
507 | wiphy_net_set(&rdev->wiphy, &init_net); |
508 | ||
79c97e97 JB |
509 | rdev->rfkill_ops.set_block = cfg80211_rfkill_set_block; |
510 | rdev->rfkill = rfkill_alloc(dev_name(&rdev->wiphy.dev), | |
511 | &rdev->wiphy.dev, RFKILL_TYPE_WLAN, | |
512 | &rdev->rfkill_ops, rdev); | |
513 | ||
514 | if (!rdev->rfkill) { | |
4f488fbc | 515 | wiphy_free(&rdev->wiphy); |
1f87f7d3 JB |
516 | return NULL; |
517 | } | |
518 | ||
3cfe91c4 | 519 | INIT_WORK(&rdev->rfkill_block, cfg80211_rfkill_block_work); |
79c97e97 JB |
520 | INIT_WORK(&rdev->conn_work, cfg80211_conn_work); |
521 | INIT_WORK(&rdev->event_work, cfg80211_event_work); | |
1f87f7d3 | 522 | |
ad002395 JB |
523 | init_waitqueue_head(&rdev->dev_wait); |
524 | ||
b9a5f8ca JM |
525 | /* |
526 | * Initialize wiphy parameters to IEEE 802.11 MIB default values. | |
527 | * Fragmentation and RTS threshold are disabled by default with the | |
528 | * special -1 value. | |
529 | */ | |
79c97e97 JB |
530 | rdev->wiphy.retry_short = 7; |
531 | rdev->wiphy.retry_long = 4; | |
532 | rdev->wiphy.frag_threshold = (u32) -1; | |
533 | rdev->wiphy.rts_threshold = (u32) -1; | |
81077e82 | 534 | rdev->wiphy.coverage_class = 0; |
b9a5f8ca | 535 | |
9a774c78 AO |
536 | rdev->wiphy.max_num_csa_counters = 1; |
537 | ||
3b06d277 AS |
538 | rdev->wiphy.max_sched_scan_plans = 1; |
539 | rdev->wiphy.max_sched_scan_plan_interval = U32_MAX; | |
540 | ||
79c97e97 | 541 | return &rdev->wiphy; |
704232c2 | 542 | } |
1998d90a | 543 | EXPORT_SYMBOL(wiphy_new_nm); |
704232c2 | 544 | |
7527a782 JB |
545 | static int wiphy_verify_combinations(struct wiphy *wiphy) |
546 | { | |
547 | const struct ieee80211_iface_combination *c; | |
548 | int i, j; | |
549 | ||
7527a782 JB |
550 | for (i = 0; i < wiphy->n_iface_combinations; i++) { |
551 | u32 cnt = 0; | |
552 | u16 all_iftypes = 0; | |
553 | ||
554 | c = &wiphy->iface_combinations[i]; | |
555 | ||
11c4a075 SW |
556 | /* |
557 | * Combinations with just one interface aren't real, | |
558 | * however we make an exception for DFS. | |
559 | */ | |
560 | if (WARN_ON((c->max_interfaces < 2) && !c->radar_detect_widths)) | |
7527a782 JB |
561 | return -EINVAL; |
562 | ||
563 | /* Need at least one channel */ | |
564 | if (WARN_ON(!c->num_different_channels)) | |
565 | return -EINVAL; | |
566 | ||
d4e50c59 MK |
567 | /* |
568 | * Put a sane limit on maximum number of different | |
569 | * channels to simplify channel accounting code. | |
570 | */ | |
571 | if (WARN_ON(c->num_different_channels > | |
572 | CFG80211_MAX_NUM_DIFFERENT_CHANNELS)) | |
573 | return -EINVAL; | |
574 | ||
11c4a075 SW |
575 | /* DFS only works on one channel. */ |
576 | if (WARN_ON(c->radar_detect_widths && | |
577 | (c->num_different_channels > 1))) | |
578 | return -EINVAL; | |
579 | ||
7527a782 JB |
580 | if (WARN_ON(!c->n_limits)) |
581 | return -EINVAL; | |
582 | ||
583 | for (j = 0; j < c->n_limits; j++) { | |
584 | u16 types = c->limits[j].types; | |
585 | ||
b6a55015 | 586 | /* interface types shouldn't overlap */ |
7527a782 JB |
587 | if (WARN_ON(types & all_iftypes)) |
588 | return -EINVAL; | |
589 | all_iftypes |= types; | |
590 | ||
591 | if (WARN_ON(!c->limits[j].max)) | |
592 | return -EINVAL; | |
593 | ||
594 | /* Shouldn't list software iftypes in combinations! */ | |
595 | if (WARN_ON(wiphy->software_iftypes & types)) | |
596 | return -EINVAL; | |
597 | ||
98104fde JB |
598 | /* Only a single P2P_DEVICE can be allowed */ |
599 | if (WARN_ON(types & BIT(NL80211_IFTYPE_P2P_DEVICE) && | |
600 | c->limits[j].max > 1)) | |
601 | return -EINVAL; | |
602 | ||
cb3b7d87 AB |
603 | /* Only a single NAN can be allowed */ |
604 | if (WARN_ON(types & BIT(NL80211_IFTYPE_NAN) && | |
605 | c->limits[j].max > 1)) | |
606 | return -EINVAL; | |
607 | ||
56271da2 JB |
608 | /* |
609 | * This isn't well-defined right now. If you have an | |
610 | * IBSS interface, then its beacon interval may change | |
611 | * by joining other networks, and nothing prevents it | |
612 | * from doing that. | |
613 | * So technically we probably shouldn't even allow AP | |
614 | * and IBSS in the same interface, but it seems that | |
615 | * some drivers support that, possibly only with fixed | |
616 | * beacon intervals for IBSS. | |
617 | */ | |
618 | if (WARN_ON(types & BIT(NL80211_IFTYPE_ADHOC) && | |
619 | c->beacon_int_min_gcd)) { | |
620 | return -EINVAL; | |
621 | } | |
622 | ||
7527a782 JB |
623 | cnt += c->limits[j].max; |
624 | /* | |
625 | * Don't advertise an unsupported type | |
626 | * in a combination. | |
627 | */ | |
628 | if (WARN_ON((wiphy->interface_modes & types) != types)) | |
629 | return -EINVAL; | |
630 | } | |
631 | ||
8f205423 JB |
632 | #ifndef CONFIG_WIRELESS_WDS |
633 | if (WARN_ON(all_iftypes & BIT(NL80211_IFTYPE_WDS))) | |
634 | return -EINVAL; | |
635 | #endif | |
636 | ||
7527a782 JB |
637 | /* You can't even choose that many! */ |
638 | if (WARN_ON(cnt < c->max_interfaces)) | |
639 | return -EINVAL; | |
640 | } | |
641 | ||
642 | return 0; | |
643 | } | |
644 | ||
704232c2 JB |
645 | int wiphy_register(struct wiphy *wiphy) |
646 | { | |
f26cbf40 | 647 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); |
704232c2 | 648 | int res; |
57fbcce3 | 649 | enum nl80211_band band; |
8318d78a JB |
650 | struct ieee80211_supported_band *sband; |
651 | bool have_band = false; | |
652 | int i; | |
f59ac048 LR |
653 | u16 ifmodes = wiphy->interface_modes; |
654 | ||
dfb89c56 | 655 | #ifdef CONFIG_PM |
964dc9e2 JB |
656 | if (WARN_ON(wiphy->wowlan && |
657 | (wiphy->wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) && | |
658 | !(wiphy->wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY))) | |
659 | return -EINVAL; | |
660 | if (WARN_ON(wiphy->wowlan && | |
661 | !wiphy->wowlan->flags && !wiphy->wowlan->n_patterns && | |
662 | !wiphy->wowlan->tcp)) | |
77dbbb13 | 663 | return -EINVAL; |
dfb89c56 | 664 | #endif |
1057d35e AN |
665 | if (WARN_ON((wiphy->features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH) && |
666 | (!rdev->ops->tdls_channel_switch || | |
667 | !rdev->ops->tdls_cancel_channel_switch))) | |
668 | return -EINVAL; | |
77dbbb13 | 669 | |
cb3b7d87 | 670 | if (WARN_ON((wiphy->interface_modes & BIT(NL80211_IFTYPE_NAN)) && |
a442b761 | 671 | (!rdev->ops->start_nan || !rdev->ops->stop_nan || |
8585989d LC |
672 | !rdev->ops->add_nan_func || !rdev->ops->del_nan_func || |
673 | !(wiphy->nan_supported_bands & BIT(NL80211_BAND_2GHZ))))) | |
cb3b7d87 AB |
674 | return -EINVAL; |
675 | ||
8f205423 JB |
676 | #ifndef CONFIG_WIRELESS_WDS |
677 | if (WARN_ON(wiphy->interface_modes & BIT(NL80211_IFTYPE_WDS))) | |
678 | return -EINVAL; | |
679 | #endif | |
680 | ||
9bb7e0f2 JB |
681 | if (WARN_ON(wiphy->pmsr_capa && !wiphy->pmsr_capa->ftm.supported)) |
682 | return -EINVAL; | |
683 | ||
684 | if (wiphy->pmsr_capa && wiphy->pmsr_capa->ftm.supported) { | |
685 | if (WARN_ON(!wiphy->pmsr_capa->ftm.asap && | |
686 | !wiphy->pmsr_capa->ftm.non_asap)) | |
687 | return -EINVAL; | |
688 | if (WARN_ON(!wiphy->pmsr_capa->ftm.preambles || | |
689 | !wiphy->pmsr_capa->ftm.bandwidths)) | |
690 | return -EINVAL; | |
691 | if (WARN_ON(wiphy->pmsr_capa->ftm.preambles & | |
692 | ~(BIT(NL80211_PREAMBLE_LEGACY) | | |
693 | BIT(NL80211_PREAMBLE_HT) | | |
694 | BIT(NL80211_PREAMBLE_VHT) | | |
efb5520d | 695 | BIT(NL80211_PREAMBLE_HE) | |
9bb7e0f2 JB |
696 | BIT(NL80211_PREAMBLE_DMG)))) |
697 | return -EINVAL; | |
efb5520d AS |
698 | if (WARN_ON((wiphy->pmsr_capa->ftm.trigger_based || |
699 | wiphy->pmsr_capa->ftm.non_trigger_based) && | |
700 | !(wiphy->pmsr_capa->ftm.preambles & | |
701 | BIT(NL80211_PREAMBLE_HE)))) | |
702 | return -EINVAL; | |
9bb7e0f2 JB |
703 | if (WARN_ON(wiphy->pmsr_capa->ftm.bandwidths & |
704 | ~(BIT(NL80211_CHAN_WIDTH_20_NOHT) | | |
705 | BIT(NL80211_CHAN_WIDTH_20) | | |
706 | BIT(NL80211_CHAN_WIDTH_40) | | |
707 | BIT(NL80211_CHAN_WIDTH_80) | | |
708 | BIT(NL80211_CHAN_WIDTH_80P80) | | |
709 | BIT(NL80211_CHAN_WIDTH_160) | | |
710 | BIT(NL80211_CHAN_WIDTH_5) | | |
711 | BIT(NL80211_CHAN_WIDTH_10)))) | |
712 | return -EINVAL; | |
713 | } | |
714 | ||
ad932f04 AN |
715 | /* |
716 | * if a wiphy has unsupported modes for regulatory channel enforcement, | |
717 | * opt-out of enforcement checking | |
718 | */ | |
719 | if (wiphy->interface_modes & ~(BIT(NL80211_IFTYPE_STATION) | | |
720 | BIT(NL80211_IFTYPE_P2P_CLIENT) | | |
721 | BIT(NL80211_IFTYPE_AP) | | |
722 | BIT(NL80211_IFTYPE_P2P_GO) | | |
723 | BIT(NL80211_IFTYPE_ADHOC) | | |
724 | BIT(NL80211_IFTYPE_P2P_DEVICE) | | |
cb3b7d87 | 725 | BIT(NL80211_IFTYPE_NAN) | |
ad932f04 AN |
726 | BIT(NL80211_IFTYPE_AP_VLAN) | |
727 | BIT(NL80211_IFTYPE_MONITOR))) | |
728 | wiphy->regulatory_flags |= REGULATORY_IGNORE_STALE_KICKOFF; | |
729 | ||
b0d7aa59 JD |
730 | if (WARN_ON((wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED) && |
731 | (wiphy->regulatory_flags & | |
732 | (REGULATORY_CUSTOM_REG | | |
733 | REGULATORY_STRICT_REG | | |
734 | REGULATORY_COUNTRY_IE_FOLLOW_POWER | | |
735 | REGULATORY_COUNTRY_IE_IGNORE)))) | |
736 | return -EINVAL; | |
737 | ||
be29b99a AK |
738 | if (WARN_ON(wiphy->coalesce && |
739 | (!wiphy->coalesce->n_rules || | |
740 | !wiphy->coalesce->n_patterns) && | |
741 | (!wiphy->coalesce->pattern_min_len || | |
742 | wiphy->coalesce->pattern_min_len > | |
743 | wiphy->coalesce->pattern_max_len))) | |
744 | return -EINVAL; | |
745 | ||
562a7480 JB |
746 | if (WARN_ON(wiphy->ap_sme_capa && |
747 | !(wiphy->flags & WIPHY_FLAG_HAVE_AP_SME))) | |
748 | return -EINVAL; | |
749 | ||
ef15aac6 JB |
750 | if (WARN_ON(wiphy->addresses && !wiphy->n_addresses)) |
751 | return -EINVAL; | |
752 | ||
753 | if (WARN_ON(wiphy->addresses && | |
754 | !is_zero_ether_addr(wiphy->perm_addr) && | |
755 | memcmp(wiphy->perm_addr, wiphy->addresses[0].addr, | |
756 | ETH_ALEN))) | |
757 | return -EINVAL; | |
758 | ||
77765eaf VT |
759 | if (WARN_ON(wiphy->max_acl_mac_addrs && |
760 | (!(wiphy->flags & WIPHY_FLAG_HAVE_AP_SME) || | |
761 | !rdev->ops->set_mac_acl))) | |
762 | return -EINVAL; | |
763 | ||
38de03d2 AS |
764 | /* assure only valid behaviours are flagged by driver |
765 | * hence subtract 2 as bit 0 is invalid. | |
766 | */ | |
767 | if (WARN_ON(wiphy->bss_select_support && | |
768 | (wiphy->bss_select_support & ~(BIT(__NL80211_BSS_SELECT_ATTR_AFTER_LAST) - 2)))) | |
769 | return -EINVAL; | |
770 | ||
3a00df57 AS |
771 | if (WARN_ON(wiphy_ext_feature_isset(&rdev->wiphy, |
772 | NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X) && | |
773 | (!rdev->ops->set_pmk || !rdev->ops->del_pmk))) | |
774 | return -EINVAL; | |
775 | ||
7f9a3e15 VK |
776 | if (WARN_ON(!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) && |
777 | rdev->ops->update_connect_params)) | |
778 | return -EINVAL; | |
779 | ||
ef15aac6 JB |
780 | if (wiphy->addresses) |
781 | memcpy(wiphy->perm_addr, wiphy->addresses[0].addr, ETH_ALEN); | |
782 | ||
f59ac048 LR |
783 | /* sanity check ifmodes */ |
784 | WARN_ON(!ifmodes); | |
2e161f78 | 785 | ifmodes &= ((1 << NUM_NL80211_IFTYPES) - 1) & ~1; |
f59ac048 LR |
786 | if (WARN_ON(ifmodes != wiphy->interface_modes)) |
787 | wiphy->interface_modes = ifmodes; | |
8318d78a | 788 | |
7527a782 JB |
789 | res = wiphy_verify_combinations(wiphy); |
790 | if (res) | |
791 | return res; | |
792 | ||
8318d78a | 793 | /* sanity check supported bands/channels */ |
57fbcce3 | 794 | for (band = 0; band < NUM_NL80211_BANDS; band++) { |
c4cbaf79 | 795 | u16 types = 0; |
f4381365 | 796 | bool have_he = false; |
c4cbaf79 | 797 | |
8318d78a JB |
798 | sband = wiphy->bands[band]; |
799 | if (!sband) | |
800 | continue; | |
801 | ||
802 | sband->band = band; | |
3a0c52a6 VK |
803 | if (WARN_ON(!sband->n_channels)) |
804 | return -EINVAL; | |
805 | /* | |
df78a0c0 | 806 | * on 60GHz or sub-1Ghz band, there are no legacy rates, so |
3a0c52a6 VK |
807 | * n_bitrates is 0 |
808 | */ | |
df78a0c0 TP |
809 | if (WARN_ON((band != NL80211_BAND_60GHZ && |
810 | band != NL80211_BAND_S1GHZ) && | |
3a0c52a6 | 811 | !sband->n_bitrates)) |
881d948c JB |
812 | return -EINVAL; |
813 | ||
461ce35d JB |
814 | if (WARN_ON(band == NL80211_BAND_6GHZ && |
815 | (sband->ht_cap.ht_supported || | |
816 | sband->vht_cap.vht_supported))) | |
817 | return -EINVAL; | |
818 | ||
40db6c77 AK |
819 | /* |
820 | * Since cfg80211_disable_40mhz_24ghz is global, we can | |
821 | * modify the sband's ht data even if the driver uses a | |
822 | * global structure for that. | |
823 | */ | |
824 | if (cfg80211_disable_40mhz_24ghz && | |
57fbcce3 | 825 | band == NL80211_BAND_2GHZ && |
40db6c77 AK |
826 | sband->ht_cap.ht_supported) { |
827 | sband->ht_cap.cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; | |
828 | sband->ht_cap.cap &= ~IEEE80211_HT_CAP_SGI_40; | |
829 | } | |
830 | ||
881d948c JB |
831 | /* |
832 | * Since we use a u32 for rate bitmaps in | |
833 | * ieee80211_get_response_rate, we cannot | |
834 | * have more than 32 legacy rates. | |
835 | */ | |
836 | if (WARN_ON(sband->n_bitrates > 32)) | |
8318d78a | 837 | return -EINVAL; |
8318d78a JB |
838 | |
839 | for (i = 0; i < sband->n_channels; i++) { | |
840 | sband->channels[i].orig_flags = | |
841 | sband->channels[i].flags; | |
c4a9fafc | 842 | sband->channels[i].orig_mag = INT_MAX; |
8318d78a JB |
843 | sband->channels[i].orig_mpwr = |
844 | sband->channels[i].max_power; | |
845 | sband->channels[i].band = band; | |
be689f68 JB |
846 | |
847 | if (WARN_ON(sband->channels[i].freq_offset >= 1000)) | |
848 | return -EINVAL; | |
8318d78a JB |
849 | } |
850 | ||
c4cbaf79 LC |
851 | for (i = 0; i < sband->n_iftype_data; i++) { |
852 | const struct ieee80211_sband_iftype_data *iftd; | |
853 | ||
854 | iftd = &sband->iftype_data[i]; | |
855 | ||
856 | if (WARN_ON(!iftd->types_mask)) | |
857 | return -EINVAL; | |
858 | if (WARN_ON(types & iftd->types_mask)) | |
859 | return -EINVAL; | |
860 | ||
861 | /* at least one piece of information must be present */ | |
862 | if (WARN_ON(!iftd->he_cap.has_he)) | |
863 | return -EINVAL; | |
864 | ||
865 | types |= iftd->types_mask; | |
f4381365 JB |
866 | |
867 | if (i == 0) | |
868 | have_he = iftd->he_cap.has_he; | |
869 | else | |
870 | have_he = have_he && | |
871 | iftd->he_cap.has_he; | |
c4cbaf79 LC |
872 | } |
873 | ||
f4381365 JB |
874 | if (WARN_ON(!have_he && band == NL80211_BAND_6GHZ)) |
875 | return -EINVAL; | |
876 | ||
8318d78a JB |
877 | have_band = true; |
878 | } | |
879 | ||
880 | if (!have_band) { | |
881 | WARN_ON(1); | |
882 | return -EINVAL; | |
883 | } | |
884 | ||
901bb989 JB |
885 | for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) { |
886 | /* | |
887 | * Validate we have a policy (can be explicitly set to | |
888 | * VENDOR_CMD_RAW_DATA which is non-NULL) and also that | |
889 | * we have at least one of doit/dumpit. | |
890 | */ | |
891 | if (WARN_ON(!rdev->wiphy.vendor_commands[i].policy)) | |
892 | return -EINVAL; | |
893 | if (WARN_ON(!rdev->wiphy.vendor_commands[i].doit && | |
894 | !rdev->wiphy.vendor_commands[i].dumpit)) | |
895 | return -EINVAL; | |
896 | } | |
897 | ||
dfb89c56 | 898 | #ifdef CONFIG_PM |
964dc9e2 JB |
899 | if (WARN_ON(rdev->wiphy.wowlan && rdev->wiphy.wowlan->n_patterns && |
900 | (!rdev->wiphy.wowlan->pattern_min_len || | |
901 | rdev->wiphy.wowlan->pattern_min_len > | |
902 | rdev->wiphy.wowlan->pattern_max_len))) | |
903 | return -EINVAL; | |
dfb89c56 | 904 | #endif |
ff1b6e69 | 905 | |
8318d78a JB |
906 | /* check and set up bitrates */ |
907 | ieee80211_set_bitrate_flags(wiphy); | |
908 | ||
00c3a6ed JB |
909 | rdev->wiphy.features |= NL80211_FEATURE_SCAN_FLUSH; |
910 | ||
aa5f66d5 | 911 | rtnl_lock(); |
79c97e97 | 912 | res = device_add(&rdev->wiphy.dev); |
c3d34d5d | 913 | if (res) { |
aa5f66d5 | 914 | rtnl_unlock(); |
c3d34d5d JL |
915 | return res; |
916 | } | |
1f87f7d3 | 917 | |
2f0accc1 | 918 | /* set up regulatory info */ |
57b5ce07 | 919 | wiphy_regulatory_register(wiphy); |
2f0accc1 | 920 | |
5f2aa25e | 921 | list_add_rcu(&rdev->list, &cfg80211_rdev_list); |
f5ea9120 | 922 | cfg80211_rdev_list_generation++; |
704232c2 JB |
923 | |
924 | /* add to debugfs */ | |
d82574a8 GKH |
925 | rdev->wiphy.debugfsdir = debugfs_create_dir(wiphy_name(&rdev->wiphy), |
926 | ieee80211_debugfs_dir); | |
704232c2 | 927 | |
a796dac9 TB |
928 | cfg80211_debugfs_rdev_add(rdev); |
929 | nl80211_notify_wiphy(rdev, NL80211_CMD_NEW_WIPHY); | |
930 | ||
a2f73b6c | 931 | if (wiphy->regulatory_flags & REGULATORY_CUSTOM_REG) { |
73d54c9e LR |
932 | struct regulatory_request request; |
933 | ||
934 | request.wiphy_idx = get_wiphy_idx(wiphy); | |
935 | request.initiator = NL80211_REGDOM_SET_BY_DRIVER; | |
936 | request.alpha2[0] = '9'; | |
937 | request.alpha2[1] = '9'; | |
938 | ||
939 | nl80211_send_reg_change_event(&request); | |
940 | } | |
941 | ||
019ae3a9 KV |
942 | /* Check that nobody globally advertises any capabilities they do not |
943 | * advertise on all possible interface types. | |
944 | */ | |
945 | if (wiphy->extended_capabilities_len && | |
946 | wiphy->num_iftype_ext_capab && | |
947 | wiphy->iftype_ext_capab) { | |
948 | u8 supported_on_all, j; | |
949 | const struct wiphy_iftype_ext_capab *capab; | |
950 | ||
951 | capab = wiphy->iftype_ext_capab; | |
952 | for (j = 0; j < wiphy->extended_capabilities_len; j++) { | |
953 | if (capab[0].extended_capabilities_len > j) | |
954 | supported_on_all = | |
955 | capab[0].extended_capabilities[j]; | |
956 | else | |
957 | supported_on_all = 0x00; | |
958 | for (i = 1; i < wiphy->num_iftype_ext_capab; i++) { | |
959 | if (j >= capab[i].extended_capabilities_len) { | |
960 | supported_on_all = 0x00; | |
961 | break; | |
962 | } | |
963 | supported_on_all &= | |
964 | capab[i].extended_capabilities[j]; | |
965 | } | |
966 | if (WARN_ON(wiphy->extended_capabilities[j] & | |
967 | ~supported_on_all)) | |
968 | break; | |
969 | } | |
970 | } | |
971 | ||
ecb44335 SG |
972 | rdev->wiphy.registered = true; |
973 | rtnl_unlock(); | |
aa5f66d5 JB |
974 | |
975 | res = rfkill_register(rdev->rfkill); | |
976 | if (res) { | |
977 | rfkill_destroy(rdev->rfkill); | |
978 | rdev->rfkill = NULL; | |
979 | wiphy_unregister(&rdev->wiphy); | |
980 | return res; | |
981 | } | |
982 | ||
2f0accc1 | 983 | return 0; |
704232c2 JB |
984 | } |
985 | EXPORT_SYMBOL(wiphy_register); | |
986 | ||
1f87f7d3 JB |
987 | void wiphy_rfkill_start_polling(struct wiphy *wiphy) |
988 | { | |
f26cbf40 | 989 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); |
1f87f7d3 | 990 | |
79c97e97 | 991 | if (!rdev->ops->rfkill_poll) |
1f87f7d3 | 992 | return; |
79c97e97 JB |
993 | rdev->rfkill_ops.poll = cfg80211_rfkill_poll; |
994 | rfkill_resume_polling(rdev->rfkill); | |
1f87f7d3 JB |
995 | } |
996 | EXPORT_SYMBOL(wiphy_rfkill_start_polling); | |
997 | ||
998 | void wiphy_rfkill_stop_polling(struct wiphy *wiphy) | |
999 | { | |
f26cbf40 | 1000 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); |
1f87f7d3 | 1001 | |
79c97e97 | 1002 | rfkill_pause_polling(rdev->rfkill); |
1f87f7d3 JB |
1003 | } |
1004 | EXPORT_SYMBOL(wiphy_rfkill_stop_polling); | |
1005 | ||
704232c2 JB |
1006 | void wiphy_unregister(struct wiphy *wiphy) |
1007 | { | |
f26cbf40 | 1008 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); |
704232c2 | 1009 | |
ad002395 JB |
1010 | wait_event(rdev->dev_wait, ({ |
1011 | int __count; | |
5fe231e8 | 1012 | rtnl_lock(); |
ad002395 | 1013 | __count = rdev->opencount; |
5fe231e8 | 1014 | rtnl_unlock(); |
c4f60846 | 1015 | __count == 0; })); |
ad002395 | 1016 | |
aa5f66d5 JB |
1017 | if (rdev->rfkill) |
1018 | rfkill_unregister(rdev->rfkill); | |
256c90de | 1019 | |
5fe231e8 | 1020 | rtnl_lock(); |
3bb20556 | 1021 | nl80211_notify_wiphy(rdev, NL80211_CMD_DEL_WIPHY); |
5fe231e8 JB |
1022 | rdev->wiphy.registered = false; |
1023 | ||
53873f13 | 1024 | WARN_ON(!list_empty(&rdev->wiphy.wdev_list)); |
ad002395 JB |
1025 | |
1026 | /* | |
1027 | * First remove the hardware from everywhere, this makes | |
1028 | * it impossible to find from userspace. | |
1029 | */ | |
7bcfaf2f | 1030 | debugfs_remove_recursive(rdev->wiphy.debugfsdir); |
5f2aa25e JB |
1031 | list_del_rcu(&rdev->list); |
1032 | synchronize_rcu(); | |
f16bfc1c | 1033 | |
bfead080 LR |
1034 | /* |
1035 | * If this device got a regulatory hint tell core its | |
1036 | * free to listen now to a new shiny device regulatory hint | |
1037 | */ | |
1038 | wiphy_regulatory_deregister(wiphy); | |
3f2355cb | 1039 | |
f5ea9120 | 1040 | cfg80211_rdev_list_generation++; |
79c97e97 | 1041 | device_del(&rdev->wiphy.dev); |
704232c2 | 1042 | |
5fe231e8 | 1043 | rtnl_unlock(); |
6682588a | 1044 | |
36e6fea8 | 1045 | flush_work(&rdev->scan_done_wk); |
6682588a | 1046 | cancel_work_sync(&rdev->conn_work); |
6682588a | 1047 | flush_work(&rdev->event_work); |
04f39047 | 1048 | cancel_delayed_work_sync(&rdev->dfs_update_channels_wk); |
78f22b6a | 1049 | flush_work(&rdev->destroy_work); |
93a1e86c | 1050 | flush_work(&rdev->sched_scan_stop_wk); |
89766727 VT |
1051 | flush_work(&rdev->propagate_radar_detect_wk); |
1052 | flush_work(&rdev->propagate_cac_done_wk); | |
79ea1e12 | 1053 | flush_work(&rdev->mgmt_registrations_update_wk); |
6d52563f | 1054 | |
6abb9cb9 JB |
1055 | #ifdef CONFIG_PM |
1056 | if (rdev->wiphy.wowlan_config && rdev->ops->set_wakeup) | |
e35e4d28 | 1057 | rdev_set_wakeup(rdev, false); |
6abb9cb9 | 1058 | #endif |
6d52563f | 1059 | cfg80211_rdev_free_wowlan(rdev); |
be29b99a | 1060 | cfg80211_rdev_free_coalesce(rdev); |
704232c2 JB |
1061 | } |
1062 | EXPORT_SYMBOL(wiphy_unregister); | |
1063 | ||
79c97e97 | 1064 | void cfg80211_dev_free(struct cfg80211_registered_device *rdev) |
704232c2 | 1065 | { |
2a519311 | 1066 | struct cfg80211_internal_bss *scan, *tmp; |
37c73b5f | 1067 | struct cfg80211_beacon_registration *reg, *treg; |
79c97e97 | 1068 | rfkill_destroy(rdev->rfkill); |
37c73b5f BG |
1069 | list_for_each_entry_safe(reg, treg, &rdev->beacon_registrations, list) { |
1070 | list_del(®->list); | |
1071 | kfree(reg); | |
1072 | } | |
79c97e97 | 1073 | list_for_each_entry_safe(scan, tmp, &rdev->bss_list, list) |
5b112d3d | 1074 | cfg80211_put_bss(&rdev->wiphy, &scan->pub); |
79c97e97 | 1075 | kfree(rdev); |
704232c2 JB |
1076 | } |
1077 | ||
1078 | void wiphy_free(struct wiphy *wiphy) | |
1079 | { | |
1080 | put_device(&wiphy->dev); | |
1081 | } | |
1082 | EXPORT_SYMBOL(wiphy_free); | |
1083 | ||
1f87f7d3 JB |
1084 | void wiphy_rfkill_set_hw_state(struct wiphy *wiphy, bool blocked) |
1085 | { | |
f26cbf40 | 1086 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); |
1f87f7d3 | 1087 | |
79c97e97 | 1088 | if (rfkill_set_hw_state(rdev->rfkill, blocked)) |
3cfe91c4 | 1089 | schedule_work(&rdev->rfkill_block); |
1f87f7d3 JB |
1090 | } |
1091 | EXPORT_SYMBOL(wiphy_rfkill_set_hw_state); | |
1092 | ||
4a4b8169 AZ |
1093 | void cfg80211_cqm_config_free(struct wireless_dev *wdev) |
1094 | { | |
1095 | kfree(wdev->cqm_config); | |
1096 | wdev->cqm_config = NULL; | |
1097 | } | |
1098 | ||
85dd3da4 | 1099 | static void __cfg80211_unregister_wdev(struct wireless_dev *wdev, bool sync) |
98104fde | 1100 | { |
f26cbf40 | 1101 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); |
98104fde JB |
1102 | |
1103 | ASSERT_RTNL(); | |
1104 | ||
73350424 JB |
1105 | flush_work(&wdev->pmsr_free_wk); |
1106 | ||
7f8ed01e DK |
1107 | nl80211_notify_iface(rdev, wdev, NL80211_CMD_DEL_INTERFACE); |
1108 | ||
98104fde | 1109 | list_del_rcu(&wdev->list); |
85dd3da4 JB |
1110 | if (sync) |
1111 | synchronize_rcu(); | |
98104fde JB |
1112 | rdev->devlist_generation++; |
1113 | ||
85dd3da4 JB |
1114 | cfg80211_mlme_purge_registrations(wdev); |
1115 | ||
98104fde JB |
1116 | switch (wdev->iftype) { |
1117 | case NL80211_IFTYPE_P2P_DEVICE: | |
f9f47529 | 1118 | cfg80211_stop_p2p_device(rdev, wdev); |
98104fde | 1119 | break; |
cb3b7d87 AB |
1120 | case NL80211_IFTYPE_NAN: |
1121 | cfg80211_stop_nan(rdev, wdev); | |
1122 | break; | |
98104fde | 1123 | default: |
98104fde JB |
1124 | break; |
1125 | } | |
4a4b8169 | 1126 | |
85dd3da4 | 1127 | #ifdef CONFIG_CFG80211_WEXT |
453431a5 | 1128 | kfree_sensitive(wdev->wext.keys); |
56cb31e1 | 1129 | wdev->wext.keys = NULL; |
85dd3da4 JB |
1130 | #endif |
1131 | /* only initialized if we have a netdev */ | |
1132 | if (wdev->netdev) | |
1133 | flush_work(&wdev->disconnect_wk); | |
1134 | ||
4a4b8169 | 1135 | cfg80211_cqm_config_free(wdev); |
98104fde | 1136 | } |
85dd3da4 JB |
1137 | |
1138 | void cfg80211_unregister_wdev(struct wireless_dev *wdev) | |
1139 | { | |
1140 | if (WARN_ON(wdev->netdev)) | |
1141 | return; | |
1142 | ||
1143 | __cfg80211_unregister_wdev(wdev, true); | |
1144 | } | |
98104fde JB |
1145 | EXPORT_SYMBOL(cfg80211_unregister_wdev); |
1146 | ||
f1e3d556 | 1147 | static const struct device_type wiphy_type = { |
053a93dd MH |
1148 | .name = "wlan", |
1149 | }; | |
1150 | ||
dbbae26a MK |
1151 | void cfg80211_update_iface_num(struct cfg80211_registered_device *rdev, |
1152 | enum nl80211_iftype iftype, int num) | |
1153 | { | |
c5a7e582 | 1154 | ASSERT_RTNL(); |
dbbae26a MK |
1155 | |
1156 | rdev->num_running_ifaces += num; | |
1157 | if (iftype == NL80211_IFTYPE_MONITOR) | |
1158 | rdev->num_running_monitor_ifaces += num; | |
dbbae26a MK |
1159 | } |
1160 | ||
f04c2203 MK |
1161 | void __cfg80211_leave(struct cfg80211_registered_device *rdev, |
1162 | struct wireless_dev *wdev) | |
81256969 SG |
1163 | { |
1164 | struct net_device *dev = wdev->netdev; | |
ca986ad9 | 1165 | struct cfg80211_sched_scan_request *pos, *tmp; |
81256969 | 1166 | |
24d584d7 | 1167 | ASSERT_RTNL(); |
f04c2203 | 1168 | ASSERT_WDEV_LOCK(wdev); |
24d584d7 | 1169 | |
9bb7e0f2 JB |
1170 | cfg80211_pmsr_wdev_down(wdev); |
1171 | ||
81256969 SG |
1172 | switch (wdev->iftype) { |
1173 | case NL80211_IFTYPE_ADHOC: | |
f04c2203 | 1174 | __cfg80211_leave_ibss(rdev, dev, true); |
81256969 SG |
1175 | break; |
1176 | case NL80211_IFTYPE_P2P_CLIENT: | |
1177 | case NL80211_IFTYPE_STATION: | |
ca986ad9 AVS |
1178 | list_for_each_entry_safe(pos, tmp, &rdev->sched_scan_req_list, |
1179 | list) { | |
1180 | if (dev == pos->dev) | |
1181 | cfg80211_stop_sched_scan_req(rdev, pos, false); | |
1182 | } | |
81256969 | 1183 | |
81256969 SG |
1184 | #ifdef CONFIG_CFG80211_WEXT |
1185 | kfree(wdev->wext.ie); | |
1186 | wdev->wext.ie = NULL; | |
1187 | wdev->wext.ie_len = 0; | |
1188 | wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC; | |
1189 | #endif | |
83739b03 JB |
1190 | cfg80211_disconnect(rdev, dev, |
1191 | WLAN_REASON_DEAUTH_LEAVING, true); | |
81256969 SG |
1192 | break; |
1193 | case NL80211_IFTYPE_MESH_POINT: | |
f04c2203 | 1194 | __cfg80211_leave_mesh(rdev, dev); |
81256969 SG |
1195 | break; |
1196 | case NL80211_IFTYPE_AP: | |
74418ede | 1197 | case NL80211_IFTYPE_P2P_GO: |
f04c2203 | 1198 | __cfg80211_stop_ap(rdev, dev, true); |
81256969 | 1199 | break; |
6e0bd6c3 RL |
1200 | case NL80211_IFTYPE_OCB: |
1201 | __cfg80211_leave_ocb(rdev, dev); | |
1202 | break; | |
de4fcbad JB |
1203 | case NL80211_IFTYPE_WDS: |
1204 | /* must be handled by mac80211/driver, has no APIs */ | |
1205 | break; | |
1206 | case NL80211_IFTYPE_P2P_DEVICE: | |
cb3b7d87 | 1207 | case NL80211_IFTYPE_NAN: |
de4fcbad JB |
1208 | /* cannot happen, has no netdev */ |
1209 | break; | |
1210 | case NL80211_IFTYPE_AP_VLAN: | |
1211 | case NL80211_IFTYPE_MONITOR: | |
1212 | /* nothing to do */ | |
1213 | break; | |
1214 | case NL80211_IFTYPE_UNSPECIFIED: | |
1215 | case NUM_NL80211_IFTYPES: | |
1216 | /* invalid */ | |
81256969 SG |
1217 | break; |
1218 | } | |
81256969 SG |
1219 | } |
1220 | ||
f04c2203 MK |
1221 | void cfg80211_leave(struct cfg80211_registered_device *rdev, |
1222 | struct wireless_dev *wdev) | |
1223 | { | |
1224 | wdev_lock(wdev); | |
1225 | __cfg80211_leave(rdev, wdev); | |
1226 | wdev_unlock(wdev); | |
1227 | } | |
1228 | ||
1229 | void cfg80211_stop_iface(struct wiphy *wiphy, struct wireless_dev *wdev, | |
1230 | gfp_t gfp) | |
1231 | { | |
1232 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); | |
1233 | struct cfg80211_event *ev; | |
1234 | unsigned long flags; | |
1235 | ||
1236 | trace_cfg80211_stop_iface(wiphy, wdev); | |
1237 | ||
1238 | ev = kzalloc(sizeof(*ev), gfp); | |
1239 | if (!ev) | |
1240 | return; | |
1241 | ||
1242 | ev->type = EVENT_STOPPED; | |
1243 | ||
1244 | spin_lock_irqsave(&wdev->event_lock, flags); | |
1245 | list_add_tail(&ev->list, &wdev->event_list); | |
1246 | spin_unlock_irqrestore(&wdev->event_lock, flags); | |
1247 | queue_work(cfg80211_wq, &rdev->event_work); | |
1248 | } | |
1249 | EXPORT_SYMBOL(cfg80211_stop_iface); | |
1250 | ||
e4d4216e JB |
1251 | void cfg80211_init_wdev(struct cfg80211_registered_device *rdev, |
1252 | struct wireless_dev *wdev) | |
1253 | { | |
1254 | mutex_init(&wdev->mtx); | |
1255 | INIT_LIST_HEAD(&wdev->event_list); | |
1256 | spin_lock_init(&wdev->event_lock); | |
1257 | INIT_LIST_HEAD(&wdev->mgmt_registrations); | |
1258 | spin_lock_init(&wdev->mgmt_registrations_lock); | |
9bb7e0f2 JB |
1259 | INIT_LIST_HEAD(&wdev->pmsr_list); |
1260 | spin_lock_init(&wdev->pmsr_lock); | |
1261 | INIT_WORK(&wdev->pmsr_free_wk, cfg80211_pmsr_free_wk); | |
e4d4216e JB |
1262 | |
1263 | /* | |
1264 | * We get here also when the interface changes network namespaces, | |
1265 | * as it's registered into the new one, but we don't want it to | |
1266 | * change ID in that case. Checking if the ID is already assigned | |
1267 | * works, because 0 isn't considered a valid ID and the memory is | |
1268 | * 0-initialized. | |
1269 | */ | |
1270 | if (!wdev->identifier) | |
1271 | wdev->identifier = ++rdev->wdev_id; | |
1272 | list_add_rcu(&wdev->list, &rdev->wiphy.wdev_list); | |
1273 | rdev->devlist_generation++; | |
ec8f170b JB |
1274 | |
1275 | nl80211_notify_iface(rdev, wdev, NL80211_CMD_NEW_INTERFACE); | |
e4d4216e JB |
1276 | } |
1277 | ||
c4f60846 | 1278 | static int cfg80211_netdev_notifier_call(struct notifier_block *nb, |
351638e7 | 1279 | unsigned long state, void *ptr) |
704232c2 | 1280 | { |
351638e7 | 1281 | struct net_device *dev = netdev_notifier_info_to_dev(ptr); |
2a783c13 | 1282 | struct wireless_dev *wdev = dev->ieee80211_ptr; |
704232c2 | 1283 | struct cfg80211_registered_device *rdev; |
ca986ad9 | 1284 | struct cfg80211_sched_scan_request *pos, *tmp; |
704232c2 | 1285 | |
2a783c13 | 1286 | if (!wdev) |
1f87f7d3 | 1287 | return NOTIFY_DONE; |
704232c2 | 1288 | |
f26cbf40 | 1289 | rdev = wiphy_to_rdev(wdev->wiphy); |
704232c2 | 1290 | |
2a783c13 | 1291 | WARN_ON(wdev->iftype == NL80211_IFTYPE_UNSPECIFIED); |
60719ffd | 1292 | |
704232c2 | 1293 | switch (state) { |
053a93dd MH |
1294 | case NETDEV_POST_INIT: |
1295 | SET_NETDEV_DEVTYPE(dev, &wiphy_type); | |
1296 | break; | |
704232c2 | 1297 | case NETDEV_REGISTER: |
0ff6ce7b JB |
1298 | /* |
1299 | * NB: cannot take rdev->mtx here because this may be | |
1300 | * called within code protected by it when interfaces | |
1301 | * are added with nl80211. | |
1302 | */ | |
463d0183 JB |
1303 | /* can only change netns with wiphy */ |
1304 | dev->features |= NETIF_F_NETNS_LOCAL; | |
1305 | ||
704232c2 JB |
1306 | if (sysfs_create_link(&dev->dev.kobj, &rdev->wiphy.dev.kobj, |
1307 | "phy80211")) { | |
e9c0268f | 1308 | pr_err("failed to add phy80211 symlink to netdev!\n"); |
704232c2 | 1309 | } |
2a783c13 | 1310 | wdev->netdev = dev; |
3d23e349 | 1311 | #ifdef CONFIG_CFG80211_WEXT |
2a783c13 JB |
1312 | wdev->wext.default_key = -1; |
1313 | wdev->wext.default_mgmt_key = -1; | |
f2129354 | 1314 | wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC; |
ffb9eb3d KV |
1315 | #endif |
1316 | ||
5be83de5 | 1317 | if (wdev->wiphy->flags & WIPHY_FLAG_PS_ON_BY_DEFAULT) |
ffb9eb3d | 1318 | wdev->ps = true; |
5be83de5 | 1319 | else |
ffb9eb3d | 1320 | wdev->ps = false; |
9043f3b8 JO |
1321 | /* allow mac80211 to determine the timeout */ |
1322 | wdev->ps_timeout = -1; | |
ffb9eb3d | 1323 | |
ad4bb6f8 | 1324 | if ((wdev->iftype == NL80211_IFTYPE_STATION || |
074ac8df | 1325 | wdev->iftype == NL80211_IFTYPE_P2P_CLIENT || |
ad4bb6f8 JB |
1326 | wdev->iftype == NL80211_IFTYPE_ADHOC) && !wdev->use_4addr) |
1327 | dev->priv_flags |= IFF_DONT_BRIDGE; | |
896ff063 | 1328 | |
bd2522b1 AZ |
1329 | INIT_WORK(&wdev->disconnect_wk, cfg80211_autodisconnect_wk); |
1330 | ||
ec8f170b | 1331 | cfg80211_init_wdev(rdev, wdev); |
704232c2 | 1332 | break; |
04a773ad | 1333 | case NETDEV_GOING_DOWN: |
81256969 | 1334 | cfg80211_leave(rdev, wdev); |
01a0ac41 JB |
1335 | break; |
1336 | case NETDEV_DOWN: | |
dbbae26a | 1337 | cfg80211_update_iface_num(rdev, wdev->iftype, -1); |
a617302c JB |
1338 | if (rdev->scan_req && rdev->scan_req->wdev == wdev) { |
1339 | if (WARN_ON(!rdev->scan_req->notified)) | |
1d76250b | 1340 | rdev->scan_req->info.aborted = true; |
f9d15d16 | 1341 | ___cfg80211_scan_done(rdev, false); |
a617302c | 1342 | } |
5fe231e8 | 1343 | |
ca986ad9 AVS |
1344 | list_for_each_entry_safe(pos, tmp, |
1345 | &rdev->sched_scan_req_list, list) { | |
d25d062f | 1346 | if (WARN_ON(pos->dev == wdev->netdev)) |
ca986ad9 | 1347 | cfg80211_stop_sched_scan_req(rdev, pos, false); |
5fe231e8 JB |
1348 | } |
1349 | ||
1350 | rdev->opencount--; | |
1351 | wake_up(&rdev->dev_wait); | |
04a773ad JB |
1352 | break; |
1353 | case NETDEV_UP: | |
4290cb4b | 1354 | cfg80211_update_iface_num(rdev, wdev->iftype, 1); |
667503dd | 1355 | wdev_lock(wdev); |
f2129354 | 1356 | switch (wdev->iftype) { |
29cbe68c | 1357 | #ifdef CONFIG_CFG80211_WEXT |
f2129354 | 1358 | case NL80211_IFTYPE_ADHOC: |
fffd0934 | 1359 | cfg80211_ibss_wext_join(rdev, wdev); |
04a773ad | 1360 | break; |
f2129354 | 1361 | case NL80211_IFTYPE_STATION: |
fffd0934 | 1362 | cfg80211_mgd_wext_connect(rdev, wdev); |
f2129354 | 1363 | break; |
29cbe68c | 1364 | #endif |
c80d545d | 1365 | #ifdef CONFIG_MAC80211_MESH |
29cbe68c | 1366 | case NL80211_IFTYPE_MESH_POINT: |
c80d545d JC |
1367 | { |
1368 | /* backward compat code... */ | |
1369 | struct mesh_setup setup; | |
1370 | memcpy(&setup, &default_mesh_setup, | |
1371 | sizeof(setup)); | |
1372 | /* back compat only needed for mesh_id */ | |
1373 | setup.mesh_id = wdev->ssid; | |
1374 | setup.mesh_id_len = wdev->mesh_id_up_len; | |
1375 | if (wdev->mesh_id_up_len) | |
1376 | __cfg80211_join_mesh(rdev, dev, | |
1377 | &setup, | |
1378 | &default_mesh_config); | |
1379 | break; | |
1380 | } | |
1381 | #endif | |
f2129354 | 1382 | default: |
04a773ad | 1383 | break; |
f2129354 | 1384 | } |
667503dd | 1385 | wdev_unlock(wdev); |
ad002395 | 1386 | rdev->opencount++; |
bf6a0579 JO |
1387 | |
1388 | /* | |
1389 | * Configure power management to the driver here so that its | |
1390 | * correctly set also after interface type changes etc. | |
1391 | */ | |
5966f2dd EP |
1392 | if ((wdev->iftype == NL80211_IFTYPE_STATION || |
1393 | wdev->iftype == NL80211_IFTYPE_P2P_CLIENT) && | |
d4f29978 JB |
1394 | rdev->ops->set_power_mgmt && |
1395 | rdev_set_power_mgmt(rdev, dev, wdev->ps, | |
1396 | wdev->ps_timeout)) { | |
1397 | /* assume this means it's off */ | |
1398 | wdev->ps = false; | |
1399 | } | |
2a783c13 | 1400 | break; |
704232c2 | 1401 | case NETDEV_UNREGISTER: |
e40cbdac JB |
1402 | /* |
1403 | * It is possible to get NETDEV_UNREGISTER | |
1404 | * multiple times. To detect that, check | |
1405 | * that the interface is still on the list | |
1406 | * of registered interfaces, and only then | |
1407 | * remove and clean it up. | |
1408 | */ | |
2a783c13 | 1409 | if (!list_empty(&wdev->list)) { |
85dd3da4 | 1410 | __cfg80211_unregister_wdev(wdev, false); |
704232c2 | 1411 | sysfs_remove_link(&dev->dev.kobj, "phy80211"); |
e40cbdac | 1412 | } |
5f2aa25e JB |
1413 | /* |
1414 | * synchronise (so that we won't find this netdev | |
1415 | * from other code any more) and then clear the list | |
1416 | * head so that the above code can safely check for | |
1417 | * !list_empty() to avoid double-cleanup. | |
1418 | */ | |
1419 | synchronize_rcu(); | |
1420 | INIT_LIST_HEAD(&wdev->list); | |
1f6fc43e DD |
1421 | /* |
1422 | * Ensure that all events have been processed and | |
1423 | * freed. | |
1424 | */ | |
1425 | cfg80211_process_wdev_events(wdev); | |
f9bef3df BG |
1426 | |
1427 | if (WARN_ON(wdev->current_bss)) { | |
1428 | cfg80211_unhold_bss(wdev->current_bss); | |
1429 | cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub); | |
1430 | wdev->current_bss = NULL; | |
1431 | } | |
704232c2 | 1432 | break; |
1f87f7d3 | 1433 | case NETDEV_PRE_UP: |
e6f40511 MP |
1434 | if (!cfg80211_iftype_allowed(wdev->wiphy, wdev->iftype, |
1435 | wdev->use_4addr, 0)) | |
0b20633d | 1436 | return notifier_from_errno(-EOPNOTSUPP); |
33d915d9 | 1437 | |
b6a55015 LC |
1438 | if (rfkill_blocked(rdev->rfkill)) |
1439 | return notifier_from_errno(-ERFKILL); | |
1f87f7d3 | 1440 | break; |
6784c7db ZG |
1441 | default: |
1442 | return NOTIFY_DONE; | |
704232c2 JB |
1443 | } |
1444 | ||
cb150b9d JB |
1445 | wireless_nlevent_flush(); |
1446 | ||
6784c7db | 1447 | return NOTIFY_OK; |
704232c2 JB |
1448 | } |
1449 | ||
1450 | static struct notifier_block cfg80211_netdev_notifier = { | |
1451 | .notifier_call = cfg80211_netdev_notifier_call, | |
1452 | }; | |
1453 | ||
463d0183 JB |
1454 | static void __net_exit cfg80211_pernet_exit(struct net *net) |
1455 | { | |
1456 | struct cfg80211_registered_device *rdev; | |
1457 | ||
1458 | rtnl_lock(); | |
463d0183 JB |
1459 | list_for_each_entry(rdev, &cfg80211_rdev_list, list) { |
1460 | if (net_eq(wiphy_net(&rdev->wiphy), net)) | |
1461 | WARN_ON(cfg80211_switch_netns(rdev, &init_net)); | |
1462 | } | |
463d0183 JB |
1463 | rtnl_unlock(); |
1464 | } | |
1465 | ||
1466 | static struct pernet_operations cfg80211_pernet_ops = { | |
1467 | .exit = cfg80211_pernet_exit, | |
1468 | }; | |
1469 | ||
1470 | static int __init cfg80211_init(void) | |
704232c2 | 1471 | { |
b2e1b302 LR |
1472 | int err; |
1473 | ||
463d0183 JB |
1474 | err = register_pernet_device(&cfg80211_pernet_ops); |
1475 | if (err) | |
1476 | goto out_fail_pernet; | |
1477 | ||
b2e1b302 | 1478 | err = wiphy_sysfs_init(); |
704232c2 JB |
1479 | if (err) |
1480 | goto out_fail_sysfs; | |
1481 | ||
1482 | err = register_netdevice_notifier(&cfg80211_netdev_notifier); | |
1483 | if (err) | |
1484 | goto out_fail_notifier; | |
1485 | ||
55682965 JB |
1486 | err = nl80211_init(); |
1487 | if (err) | |
1488 | goto out_fail_nl80211; | |
1489 | ||
704232c2 JB |
1490 | ieee80211_debugfs_dir = debugfs_create_dir("ieee80211", NULL); |
1491 | ||
b2e1b302 LR |
1492 | err = regulatory_init(); |
1493 | if (err) | |
1494 | goto out_fail_reg; | |
1495 | ||
e4819013 | 1496 | cfg80211_wq = alloc_ordered_workqueue("cfg80211", WQ_MEM_RECLAIM); |
f00f188f WY |
1497 | if (!cfg80211_wq) { |
1498 | err = -ENOMEM; | |
e60d7443 | 1499 | goto out_fail_wq; |
f00f188f | 1500 | } |
e60d7443 | 1501 | |
704232c2 JB |
1502 | return 0; |
1503 | ||
e60d7443 AB |
1504 | out_fail_wq: |
1505 | regulatory_exit(); | |
b2e1b302 LR |
1506 | out_fail_reg: |
1507 | debugfs_remove(ieee80211_debugfs_dir); | |
81daf735 | 1508 | nl80211_exit(); |
55682965 JB |
1509 | out_fail_nl80211: |
1510 | unregister_netdevice_notifier(&cfg80211_netdev_notifier); | |
704232c2 JB |
1511 | out_fail_notifier: |
1512 | wiphy_sysfs_exit(); | |
1513 | out_fail_sysfs: | |
463d0183 JB |
1514 | unregister_pernet_device(&cfg80211_pernet_ops); |
1515 | out_fail_pernet: | |
704232c2 JB |
1516 | return err; |
1517 | } | |
007f6c5e | 1518 | fs_initcall(cfg80211_init); |
704232c2 | 1519 | |
f884e387 | 1520 | static void __exit cfg80211_exit(void) |
704232c2 JB |
1521 | { |
1522 | debugfs_remove(ieee80211_debugfs_dir); | |
55682965 | 1523 | nl80211_exit(); |
704232c2 JB |
1524 | unregister_netdevice_notifier(&cfg80211_netdev_notifier); |
1525 | wiphy_sysfs_exit(); | |
b2e1b302 | 1526 | regulatory_exit(); |
463d0183 | 1527 | unregister_pernet_device(&cfg80211_pernet_ops); |
e60d7443 | 1528 | destroy_workqueue(cfg80211_wq); |
704232c2 JB |
1529 | } |
1530 | module_exit(cfg80211_exit); |