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 |
f0a6fd15 | 8 | * Copyright (C) 2018-2022 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 | { | |
a05829a7 | 225 | lockdep_assert_held(&rdev->wiphy.mtx); |
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 | 238 | if (rdev->scan_req && rdev->scan_req->wdev == wdev) { |
c8cb5b85 TM |
239 | if (WARN_ON(!rdev->scan_req->notified && |
240 | (!rdev->int_scan_req || | |
241 | !rdev->int_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 | { | |
a05829a7 | 250 | lockdep_assert_held(&rdev->wiphy.mtx); |
cb3b7d87 AB |
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 | } | |
a05829a7 | 276 | |
98104fde | 277 | /* otherwise, check iftype */ |
a05829a7 JB |
278 | |
279 | wiphy_lock(wiphy); | |
280 | ||
98104fde JB |
281 | switch (wdev->iftype) { |
282 | case NL80211_IFTYPE_P2P_DEVICE: | |
f9f47529 | 283 | cfg80211_stop_p2p_device(rdev, wdev); |
98104fde | 284 | break; |
cb3b7d87 AB |
285 | case NL80211_IFTYPE_NAN: |
286 | cfg80211_stop_nan(rdev, wdev); | |
287 | break; | |
98104fde JB |
288 | default: |
289 | break; | |
290 | } | |
a05829a7 JB |
291 | |
292 | wiphy_unlock(wiphy); | |
98104fde | 293 | } |
f6837ba8 JB |
294 | } |
295 | EXPORT_SYMBOL_GPL(cfg80211_shutdown_all_interfaces); | |
1f87f7d3 | 296 | |
f6837ba8 JB |
297 | static int cfg80211_rfkill_set_block(void *data, bool blocked) |
298 | { | |
299 | struct cfg80211_registered_device *rdev = data; | |
300 | ||
301 | if (!blocked) | |
302 | return 0; | |
303 | ||
304 | rtnl_lock(); | |
305 | cfg80211_shutdown_all_interfaces(&rdev->wiphy); | |
1f87f7d3 JB |
306 | rtnl_unlock(); |
307 | ||
308 | return 0; | |
309 | } | |
310 | ||
3cfe91c4 | 311 | static void cfg80211_rfkill_block_work(struct work_struct *work) |
1f87f7d3 | 312 | { |
79c97e97 | 313 | struct cfg80211_registered_device *rdev; |
1f87f7d3 | 314 | |
3cfe91c4 JB |
315 | rdev = container_of(work, struct cfg80211_registered_device, |
316 | rfkill_block); | |
317 | cfg80211_rfkill_set_block(rdev, true); | |
1f87f7d3 JB |
318 | } |
319 | ||
667503dd JB |
320 | static void cfg80211_event_work(struct work_struct *work) |
321 | { | |
322 | struct cfg80211_registered_device *rdev; | |
667503dd JB |
323 | |
324 | rdev = container_of(work, struct cfg80211_registered_device, | |
325 | event_work); | |
326 | ||
a05829a7 | 327 | wiphy_lock(&rdev->wiphy); |
3d54d255 | 328 | cfg80211_process_rdev_events(rdev); |
a05829a7 | 329 | wiphy_unlock(&rdev->wiphy); |
667503dd JB |
330 | } |
331 | ||
78f22b6a JB |
332 | void cfg80211_destroy_ifaces(struct cfg80211_registered_device *rdev) |
333 | { | |
ab81007a | 334 | struct wireless_dev *wdev, *tmp; |
78f22b6a JB |
335 | |
336 | ASSERT_RTNL(); | |
337 | ||
f0a6fd15 | 338 | list_for_each_entry_safe(wdev, tmp, &rdev->wiphy.wdev_list, list) { |
ea6b2098 JB |
339 | if (wdev->nl_owner_dead) { |
340 | if (wdev->netdev) | |
341 | dev_close(wdev->netdev); | |
ea6b2098 | 342 | |
f0a6fd15 | 343 | wiphy_lock(&rdev->wiphy); |
ea6b2098 | 344 | cfg80211_leave(rdev, wdev); |
ab81007a | 345 | rdev_del_virtual_intf(rdev, wdev); |
f0a6fd15 | 346 | wiphy_unlock(&rdev->wiphy); |
ea6b2098 | 347 | } |
78f22b6a | 348 | } |
78f22b6a JB |
349 | } |
350 | ||
351 | static void cfg80211_destroy_iface_wk(struct work_struct *work) | |
352 | { | |
353 | struct cfg80211_registered_device *rdev; | |
354 | ||
355 | rdev = container_of(work, struct cfg80211_registered_device, | |
356 | destroy_work); | |
357 | ||
358 | rtnl_lock(); | |
359 | cfg80211_destroy_ifaces(rdev); | |
360 | rtnl_unlock(); | |
361 | } | |
362 | ||
93a1e86c JR |
363 | static void cfg80211_sched_scan_stop_wk(struct work_struct *work) |
364 | { | |
365 | struct cfg80211_registered_device *rdev; | |
ca986ad9 | 366 | struct cfg80211_sched_scan_request *req, *tmp; |
93a1e86c JR |
367 | |
368 | rdev = container_of(work, struct cfg80211_registered_device, | |
369 | sched_scan_stop_wk); | |
370 | ||
371 | rtnl_lock(); | |
ca986ad9 AVS |
372 | list_for_each_entry_safe(req, tmp, &rdev->sched_scan_req_list, list) { |
373 | if (req->nl_owner_dead) | |
374 | cfg80211_stop_sched_scan_req(rdev, req, false); | |
375 | } | |
93a1e86c JR |
376 | rtnl_unlock(); |
377 | } | |
378 | ||
89766727 VT |
379 | static void cfg80211_propagate_radar_detect_wk(struct work_struct *work) |
380 | { | |
381 | struct cfg80211_registered_device *rdev; | |
382 | ||
383 | rdev = container_of(work, struct cfg80211_registered_device, | |
384 | propagate_radar_detect_wk); | |
385 | ||
386 | rtnl_lock(); | |
387 | ||
388 | regulatory_propagate_dfs_state(&rdev->wiphy, &rdev->radar_chandef, | |
389 | NL80211_DFS_UNAVAILABLE, | |
390 | NL80211_RADAR_DETECTED); | |
391 | ||
392 | rtnl_unlock(); | |
393 | } | |
394 | ||
395 | static void cfg80211_propagate_cac_done_wk(struct work_struct *work) | |
396 | { | |
397 | struct cfg80211_registered_device *rdev; | |
398 | ||
399 | rdev = container_of(work, struct cfg80211_registered_device, | |
400 | propagate_cac_done_wk); | |
401 | ||
402 | rtnl_lock(); | |
403 | ||
404 | regulatory_propagate_dfs_state(&rdev->wiphy, &rdev->cac_done_chandef, | |
405 | NL80211_DFS_AVAILABLE, | |
406 | NL80211_RADAR_CAC_FINISHED); | |
407 | ||
408 | rtnl_unlock(); | |
409 | } | |
410 | ||
704232c2 JB |
411 | /* exported functions */ |
412 | ||
1998d90a BG |
413 | struct wiphy *wiphy_new_nm(const struct cfg80211_ops *ops, int sizeof_priv, |
414 | const char *requested_name) | |
704232c2 | 415 | { |
73810b77 | 416 | static atomic_t wiphy_counter = ATOMIC_INIT(0); |
7623225f JB |
417 | |
418 | struct cfg80211_registered_device *rdev; | |
704232c2 JB |
419 | int alloc_size; |
420 | ||
0b20633d JB |
421 | WARN_ON(ops->add_key && (!ops->del_key || !ops->set_default_key)); |
422 | WARN_ON(ops->auth && (!ops->assoc || !ops->deauth || !ops->disassoc)); | |
423 | WARN_ON(ops->connect && !ops->disconnect); | |
424 | WARN_ON(ops->join_ibss && !ops->leave_ibss); | |
425 | WARN_ON(ops->add_virtual_intf && !ops->del_virtual_intf); | |
426 | WARN_ON(ops->add_station && !ops->del_station); | |
427 | WARN_ON(ops->add_mpath && !ops->del_mpath); | |
29cbe68c | 428 | WARN_ON(ops->join_mesh && !ops->leave_mesh); |
de3bb771 OO |
429 | WARN_ON(ops->start_p2p_device && !ops->stop_p2p_device); |
430 | WARN_ON(ops->start_ap && !ops->stop_ap); | |
431 | WARN_ON(ops->join_ocb && !ops->leave_ocb); | |
432 | WARN_ON(ops->suspend && !ops->resume); | |
433 | WARN_ON(ops->sched_scan_start && !ops->sched_scan_stop); | |
434 | WARN_ON(ops->remain_on_channel && !ops->cancel_remain_on_channel); | |
435 | WARN_ON(ops->tdls_channel_switch && !ops->tdls_cancel_channel_switch); | |
436 | WARN_ON(ops->add_tx_ts && !ops->del_tx_ts); | |
41ade00f | 437 | |
79c97e97 | 438 | alloc_size = sizeof(*rdev) + sizeof_priv; |
704232c2 | 439 | |
79c97e97 JB |
440 | rdev = kzalloc(alloc_size, GFP_KERNEL); |
441 | if (!rdev) | |
704232c2 JB |
442 | return NULL; |
443 | ||
79c97e97 | 444 | rdev->ops = ops; |
704232c2 | 445 | |
73810b77 | 446 | rdev->wiphy_idx = atomic_inc_return(&wiphy_counter); |
a4d73ee1 | 447 | |
f4173766 | 448 | if (unlikely(rdev->wiphy_idx < 0)) { |
7623225f | 449 | /* ugh, wrapped! */ |
73810b77 | 450 | atomic_dec(&wiphy_counter); |
79c97e97 | 451 | kfree(rdev); |
704232c2 JB |
452 | return NULL; |
453 | } | |
704232c2 | 454 | |
9b881963 JB |
455 | /* atomic_inc_return makes it start at 1, make it start at 0 */ |
456 | rdev->wiphy_idx--; | |
457 | ||
7623225f | 458 | /* give it a proper name */ |
1998d90a BG |
459 | if (requested_name && requested_name[0]) { |
460 | int rv; | |
461 | ||
462 | rtnl_lock(); | |
463 | rv = cfg80211_dev_check_name(rdev, requested_name); | |
464 | ||
465 | if (rv < 0) { | |
466 | rtnl_unlock(); | |
467 | goto use_default_name; | |
468 | } | |
469 | ||
470 | rv = dev_set_name(&rdev->wiphy.dev, "%s", requested_name); | |
471 | rtnl_unlock(); | |
472 | if (rv) | |
473 | goto use_default_name; | |
474 | } else { | |
59b179b4 JB |
475 | int rv; |
476 | ||
1998d90a BG |
477 | use_default_name: |
478 | /* NOTE: This is *probably* safe w/out holding rtnl because of | |
479 | * the restrictions on phy names. Probably this call could | |
480 | * fail if some other part of the kernel (re)named a device | |
481 | * phyX. But, might should add some locking and check return | |
482 | * value, and use a different name if this one exists? | |
483 | */ | |
59b179b4 JB |
484 | rv = dev_set_name(&rdev->wiphy.dev, PHY_NAME "%d", rdev->wiphy_idx); |
485 | if (rv < 0) { | |
486 | kfree(rdev); | |
487 | return NULL; | |
488 | } | |
1998d90a | 489 | } |
7623225f | 490 | |
a05829a7 | 491 | mutex_init(&rdev->wiphy.mtx); |
53873f13 | 492 | INIT_LIST_HEAD(&rdev->wiphy.wdev_list); |
37c73b5f BG |
493 | INIT_LIST_HEAD(&rdev->beacon_registrations); |
494 | spin_lock_init(&rdev->beacon_registrations_lock); | |
79c97e97 JB |
495 | spin_lock_init(&rdev->bss_lock); |
496 | INIT_LIST_HEAD(&rdev->bss_list); | |
ca986ad9 | 497 | INIT_LIST_HEAD(&rdev->sched_scan_req_list); |
79c97e97 | 498 | INIT_WORK(&rdev->scan_done_wk, __cfg80211_scan_done); |
04f39047 SW |
499 | INIT_DELAYED_WORK(&rdev->dfs_update_channels_wk, |
500 | cfg80211_dfs_channels_update_work); | |
3d23e349 JB |
501 | #ifdef CONFIG_CFG80211_WEXT |
502 | rdev->wiphy.wext = &cfg80211_wext_handler; | |
503 | #endif | |
504 | ||
79c97e97 JB |
505 | device_initialize(&rdev->wiphy.dev); |
506 | rdev->wiphy.dev.class = &ieee80211_class; | |
507 | rdev->wiphy.dev.platform_data = rdev; | |
9f0e1354 | 508 | device_enable_async_suspend(&rdev->wiphy.dev); |
79c97e97 | 509 | |
78f22b6a | 510 | INIT_WORK(&rdev->destroy_work, cfg80211_destroy_iface_wk); |
93a1e86c | 511 | INIT_WORK(&rdev->sched_scan_stop_wk, cfg80211_sched_scan_stop_wk); |
b34939b9 | 512 | INIT_WORK(&rdev->sched_scan_res_wk, cfg80211_sched_scan_results_wk); |
89766727 VT |
513 | INIT_WORK(&rdev->propagate_radar_detect_wk, |
514 | cfg80211_propagate_radar_detect_wk); | |
515 | INIT_WORK(&rdev->propagate_cac_done_wk, cfg80211_propagate_cac_done_wk); | |
79ea1e12 JB |
516 | INIT_WORK(&rdev->mgmt_registrations_update_wk, |
517 | cfg80211_mgmt_registrations_update_wk); | |
09b1d5dc | 518 | spin_lock_init(&rdev->mgmt_registrations_lock); |
78f22b6a | 519 | |
5be83de5 JB |
520 | #ifdef CONFIG_CFG80211_DEFAULT_PS |
521 | rdev->wiphy.flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT; | |
522 | #endif | |
16cb9d42 | 523 | |
463d0183 JB |
524 | wiphy_net_set(&rdev->wiphy, &init_net); |
525 | ||
79c97e97 | 526 | rdev->rfkill_ops.set_block = cfg80211_rfkill_set_block; |
358ae888 EG |
527 | rdev->wiphy.rfkill = rfkill_alloc(dev_name(&rdev->wiphy.dev), |
528 | &rdev->wiphy.dev, RFKILL_TYPE_WLAN, | |
529 | &rdev->rfkill_ops, rdev); | |
79c97e97 | 530 | |
358ae888 | 531 | if (!rdev->wiphy.rfkill) { |
4f488fbc | 532 | wiphy_free(&rdev->wiphy); |
1f87f7d3 JB |
533 | return NULL; |
534 | } | |
535 | ||
3cfe91c4 | 536 | INIT_WORK(&rdev->rfkill_block, cfg80211_rfkill_block_work); |
79c97e97 JB |
537 | INIT_WORK(&rdev->conn_work, cfg80211_conn_work); |
538 | INIT_WORK(&rdev->event_work, cfg80211_event_work); | |
a95bfb87 LB |
539 | INIT_WORK(&rdev->background_cac_abort_wk, |
540 | cfg80211_background_cac_abort_wk); | |
541 | INIT_DELAYED_WORK(&rdev->background_cac_done_wk, | |
542 | cfg80211_background_cac_done_wk); | |
1f87f7d3 | 543 | |
ad002395 JB |
544 | init_waitqueue_head(&rdev->dev_wait); |
545 | ||
b9a5f8ca JM |
546 | /* |
547 | * Initialize wiphy parameters to IEEE 802.11 MIB default values. | |
548 | * Fragmentation and RTS threshold are disabled by default with the | |
549 | * special -1 value. | |
550 | */ | |
79c97e97 JB |
551 | rdev->wiphy.retry_short = 7; |
552 | rdev->wiphy.retry_long = 4; | |
553 | rdev->wiphy.frag_threshold = (u32) -1; | |
554 | rdev->wiphy.rts_threshold = (u32) -1; | |
81077e82 | 555 | rdev->wiphy.coverage_class = 0; |
b9a5f8ca | 556 | |
9a774c78 AO |
557 | rdev->wiphy.max_num_csa_counters = 1; |
558 | ||
3b06d277 AS |
559 | rdev->wiphy.max_sched_scan_plans = 1; |
560 | rdev->wiphy.max_sched_scan_plan_interval = U32_MAX; | |
561 | ||
79c97e97 | 562 | return &rdev->wiphy; |
704232c2 | 563 | } |
1998d90a | 564 | EXPORT_SYMBOL(wiphy_new_nm); |
704232c2 | 565 | |
7527a782 JB |
566 | static int wiphy_verify_combinations(struct wiphy *wiphy) |
567 | { | |
568 | const struct ieee80211_iface_combination *c; | |
569 | int i, j; | |
570 | ||
7527a782 JB |
571 | for (i = 0; i < wiphy->n_iface_combinations; i++) { |
572 | u32 cnt = 0; | |
573 | u16 all_iftypes = 0; | |
574 | ||
575 | c = &wiphy->iface_combinations[i]; | |
576 | ||
11c4a075 SW |
577 | /* |
578 | * Combinations with just one interface aren't real, | |
579 | * however we make an exception for DFS. | |
580 | */ | |
581 | if (WARN_ON((c->max_interfaces < 2) && !c->radar_detect_widths)) | |
7527a782 JB |
582 | return -EINVAL; |
583 | ||
584 | /* Need at least one channel */ | |
585 | if (WARN_ON(!c->num_different_channels)) | |
586 | return -EINVAL; | |
587 | ||
11c4a075 SW |
588 | /* DFS only works on one channel. */ |
589 | if (WARN_ON(c->radar_detect_widths && | |
590 | (c->num_different_channels > 1))) | |
591 | return -EINVAL; | |
592 | ||
7527a782 JB |
593 | if (WARN_ON(!c->n_limits)) |
594 | return -EINVAL; | |
595 | ||
596 | for (j = 0; j < c->n_limits; j++) { | |
597 | u16 types = c->limits[j].types; | |
598 | ||
b6a55015 | 599 | /* interface types shouldn't overlap */ |
7527a782 JB |
600 | if (WARN_ON(types & all_iftypes)) |
601 | return -EINVAL; | |
602 | all_iftypes |= types; | |
603 | ||
604 | if (WARN_ON(!c->limits[j].max)) | |
605 | return -EINVAL; | |
606 | ||
607 | /* Shouldn't list software iftypes in combinations! */ | |
608 | if (WARN_ON(wiphy->software_iftypes & types)) | |
609 | return -EINVAL; | |
610 | ||
98104fde JB |
611 | /* Only a single P2P_DEVICE can be allowed */ |
612 | if (WARN_ON(types & BIT(NL80211_IFTYPE_P2P_DEVICE) && | |
613 | c->limits[j].max > 1)) | |
614 | return -EINVAL; | |
615 | ||
cb3b7d87 AB |
616 | /* Only a single NAN can be allowed */ |
617 | if (WARN_ON(types & BIT(NL80211_IFTYPE_NAN) && | |
618 | c->limits[j].max > 1)) | |
619 | return -EINVAL; | |
620 | ||
56271da2 JB |
621 | /* |
622 | * This isn't well-defined right now. If you have an | |
623 | * IBSS interface, then its beacon interval may change | |
624 | * by joining other networks, and nothing prevents it | |
625 | * from doing that. | |
626 | * So technically we probably shouldn't even allow AP | |
627 | * and IBSS in the same interface, but it seems that | |
628 | * some drivers support that, possibly only with fixed | |
629 | * beacon intervals for IBSS. | |
630 | */ | |
631 | if (WARN_ON(types & BIT(NL80211_IFTYPE_ADHOC) && | |
632 | c->beacon_int_min_gcd)) { | |
633 | return -EINVAL; | |
634 | } | |
635 | ||
7527a782 JB |
636 | cnt += c->limits[j].max; |
637 | /* | |
638 | * Don't advertise an unsupported type | |
639 | * in a combination. | |
640 | */ | |
641 | if (WARN_ON((wiphy->interface_modes & types) != types)) | |
642 | return -EINVAL; | |
643 | } | |
644 | ||
8f205423 JB |
645 | if (WARN_ON(all_iftypes & BIT(NL80211_IFTYPE_WDS))) |
646 | return -EINVAL; | |
8f205423 | 647 | |
7527a782 JB |
648 | /* You can't even choose that many! */ |
649 | if (WARN_ON(cnt < c->max_interfaces)) | |
650 | return -EINVAL; | |
651 | } | |
652 | ||
653 | return 0; | |
654 | } | |
655 | ||
704232c2 JB |
656 | int wiphy_register(struct wiphy *wiphy) |
657 | { | |
f26cbf40 | 658 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); |
704232c2 | 659 | int res; |
57fbcce3 | 660 | enum nl80211_band band; |
8318d78a JB |
661 | struct ieee80211_supported_band *sband; |
662 | bool have_band = false; | |
663 | int i; | |
f59ac048 LR |
664 | u16 ifmodes = wiphy->interface_modes; |
665 | ||
dfb89c56 | 666 | #ifdef CONFIG_PM |
964dc9e2 JB |
667 | if (WARN_ON(wiphy->wowlan && |
668 | (wiphy->wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) && | |
669 | !(wiphy->wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY))) | |
670 | return -EINVAL; | |
671 | if (WARN_ON(wiphy->wowlan && | |
672 | !wiphy->wowlan->flags && !wiphy->wowlan->n_patterns && | |
673 | !wiphy->wowlan->tcp)) | |
77dbbb13 | 674 | return -EINVAL; |
dfb89c56 | 675 | #endif |
1057d35e AN |
676 | if (WARN_ON((wiphy->features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH) && |
677 | (!rdev->ops->tdls_channel_switch || | |
678 | !rdev->ops->tdls_cancel_channel_switch))) | |
679 | return -EINVAL; | |
77dbbb13 | 680 | |
cb3b7d87 | 681 | if (WARN_ON((wiphy->interface_modes & BIT(NL80211_IFTYPE_NAN)) && |
a442b761 | 682 | (!rdev->ops->start_nan || !rdev->ops->stop_nan || |
8585989d LC |
683 | !rdev->ops->add_nan_func || !rdev->ops->del_nan_func || |
684 | !(wiphy->nan_supported_bands & BIT(NL80211_BAND_2GHZ))))) | |
cb3b7d87 AB |
685 | return -EINVAL; |
686 | ||
8f205423 JB |
687 | if (WARN_ON(wiphy->interface_modes & BIT(NL80211_IFTYPE_WDS))) |
688 | return -EINVAL; | |
8f205423 | 689 | |
9bb7e0f2 JB |
690 | if (WARN_ON(wiphy->pmsr_capa && !wiphy->pmsr_capa->ftm.supported)) |
691 | return -EINVAL; | |
692 | ||
693 | if (wiphy->pmsr_capa && wiphy->pmsr_capa->ftm.supported) { | |
694 | if (WARN_ON(!wiphy->pmsr_capa->ftm.asap && | |
695 | !wiphy->pmsr_capa->ftm.non_asap)) | |
696 | return -EINVAL; | |
697 | if (WARN_ON(!wiphy->pmsr_capa->ftm.preambles || | |
698 | !wiphy->pmsr_capa->ftm.bandwidths)) | |
699 | return -EINVAL; | |
700 | if (WARN_ON(wiphy->pmsr_capa->ftm.preambles & | |
701 | ~(BIT(NL80211_PREAMBLE_LEGACY) | | |
702 | BIT(NL80211_PREAMBLE_HT) | | |
703 | BIT(NL80211_PREAMBLE_VHT) | | |
efb5520d | 704 | BIT(NL80211_PREAMBLE_HE) | |
9bb7e0f2 JB |
705 | BIT(NL80211_PREAMBLE_DMG)))) |
706 | return -EINVAL; | |
efb5520d AS |
707 | if (WARN_ON((wiphy->pmsr_capa->ftm.trigger_based || |
708 | wiphy->pmsr_capa->ftm.non_trigger_based) && | |
709 | !(wiphy->pmsr_capa->ftm.preambles & | |
710 | BIT(NL80211_PREAMBLE_HE)))) | |
711 | return -EINVAL; | |
9bb7e0f2 JB |
712 | if (WARN_ON(wiphy->pmsr_capa->ftm.bandwidths & |
713 | ~(BIT(NL80211_CHAN_WIDTH_20_NOHT) | | |
714 | BIT(NL80211_CHAN_WIDTH_20) | | |
715 | BIT(NL80211_CHAN_WIDTH_40) | | |
716 | BIT(NL80211_CHAN_WIDTH_80) | | |
717 | BIT(NL80211_CHAN_WIDTH_80P80) | | |
718 | BIT(NL80211_CHAN_WIDTH_160) | | |
719 | BIT(NL80211_CHAN_WIDTH_5) | | |
720 | BIT(NL80211_CHAN_WIDTH_10)))) | |
721 | return -EINVAL; | |
722 | } | |
723 | ||
ad932f04 AN |
724 | /* |
725 | * if a wiphy has unsupported modes for regulatory channel enforcement, | |
726 | * opt-out of enforcement checking | |
727 | */ | |
728 | if (wiphy->interface_modes & ~(BIT(NL80211_IFTYPE_STATION) | | |
729 | BIT(NL80211_IFTYPE_P2P_CLIENT) | | |
730 | BIT(NL80211_IFTYPE_AP) | | |
701fdfe3 | 731 | BIT(NL80211_IFTYPE_MESH_POINT) | |
ad932f04 AN |
732 | BIT(NL80211_IFTYPE_P2P_GO) | |
733 | BIT(NL80211_IFTYPE_ADHOC) | | |
734 | BIT(NL80211_IFTYPE_P2P_DEVICE) | | |
cb3b7d87 | 735 | BIT(NL80211_IFTYPE_NAN) | |
ad932f04 AN |
736 | BIT(NL80211_IFTYPE_AP_VLAN) | |
737 | BIT(NL80211_IFTYPE_MONITOR))) | |
738 | wiphy->regulatory_flags |= REGULATORY_IGNORE_STALE_KICKOFF; | |
739 | ||
b0d7aa59 JD |
740 | if (WARN_ON((wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED) && |
741 | (wiphy->regulatory_flags & | |
742 | (REGULATORY_CUSTOM_REG | | |
743 | REGULATORY_STRICT_REG | | |
744 | REGULATORY_COUNTRY_IE_FOLLOW_POWER | | |
745 | REGULATORY_COUNTRY_IE_IGNORE)))) | |
746 | return -EINVAL; | |
747 | ||
be29b99a AK |
748 | if (WARN_ON(wiphy->coalesce && |
749 | (!wiphy->coalesce->n_rules || | |
750 | !wiphy->coalesce->n_patterns) && | |
751 | (!wiphy->coalesce->pattern_min_len || | |
752 | wiphy->coalesce->pattern_min_len > | |
753 | wiphy->coalesce->pattern_max_len))) | |
754 | return -EINVAL; | |
755 | ||
562a7480 JB |
756 | if (WARN_ON(wiphy->ap_sme_capa && |
757 | !(wiphy->flags & WIPHY_FLAG_HAVE_AP_SME))) | |
758 | return -EINVAL; | |
759 | ||
ef15aac6 JB |
760 | if (WARN_ON(wiphy->addresses && !wiphy->n_addresses)) |
761 | return -EINVAL; | |
762 | ||
763 | if (WARN_ON(wiphy->addresses && | |
764 | !is_zero_ether_addr(wiphy->perm_addr) && | |
765 | memcmp(wiphy->perm_addr, wiphy->addresses[0].addr, | |
766 | ETH_ALEN))) | |
767 | return -EINVAL; | |
768 | ||
77765eaf VT |
769 | if (WARN_ON(wiphy->max_acl_mac_addrs && |
770 | (!(wiphy->flags & WIPHY_FLAG_HAVE_AP_SME) || | |
771 | !rdev->ops->set_mac_acl))) | |
772 | return -EINVAL; | |
773 | ||
38de03d2 AS |
774 | /* assure only valid behaviours are flagged by driver |
775 | * hence subtract 2 as bit 0 is invalid. | |
776 | */ | |
777 | if (WARN_ON(wiphy->bss_select_support && | |
778 | (wiphy->bss_select_support & ~(BIT(__NL80211_BSS_SELECT_ATTR_AFTER_LAST) - 2)))) | |
779 | return -EINVAL; | |
780 | ||
3a00df57 AS |
781 | if (WARN_ON(wiphy_ext_feature_isset(&rdev->wiphy, |
782 | NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X) && | |
783 | (!rdev->ops->set_pmk || !rdev->ops->del_pmk))) | |
784 | return -EINVAL; | |
785 | ||
7f9a3e15 VK |
786 | if (WARN_ON(!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) && |
787 | rdev->ops->update_connect_params)) | |
788 | return -EINVAL; | |
789 | ||
ef15aac6 JB |
790 | if (wiphy->addresses) |
791 | memcpy(wiphy->perm_addr, wiphy->addresses[0].addr, ETH_ALEN); | |
792 | ||
f59ac048 LR |
793 | /* sanity check ifmodes */ |
794 | WARN_ON(!ifmodes); | |
2e161f78 | 795 | ifmodes &= ((1 << NUM_NL80211_IFTYPES) - 1) & ~1; |
f59ac048 LR |
796 | if (WARN_ON(ifmodes != wiphy->interface_modes)) |
797 | wiphy->interface_modes = ifmodes; | |
8318d78a | 798 | |
7527a782 JB |
799 | res = wiphy_verify_combinations(wiphy); |
800 | if (res) | |
801 | return res; | |
802 | ||
8318d78a | 803 | /* sanity check supported bands/channels */ |
57fbcce3 | 804 | for (band = 0; band < NUM_NL80211_BANDS; band++) { |
c4cbaf79 | 805 | u16 types = 0; |
f4381365 | 806 | bool have_he = false; |
c4cbaf79 | 807 | |
8318d78a JB |
808 | sband = wiphy->bands[band]; |
809 | if (!sband) | |
810 | continue; | |
811 | ||
812 | sband->band = band; | |
3a0c52a6 VK |
813 | if (WARN_ON(!sband->n_channels)) |
814 | return -EINVAL; | |
815 | /* | |
df78a0c0 | 816 | * on 60GHz or sub-1Ghz band, there are no legacy rates, so |
3a0c52a6 VK |
817 | * n_bitrates is 0 |
818 | */ | |
df78a0c0 TP |
819 | if (WARN_ON((band != NL80211_BAND_60GHZ && |
820 | band != NL80211_BAND_S1GHZ) && | |
3a0c52a6 | 821 | !sband->n_bitrates)) |
881d948c JB |
822 | return -EINVAL; |
823 | ||
461ce35d JB |
824 | if (WARN_ON(band == NL80211_BAND_6GHZ && |
825 | (sband->ht_cap.ht_supported || | |
826 | sband->vht_cap.vht_supported))) | |
827 | return -EINVAL; | |
828 | ||
40db6c77 AK |
829 | /* |
830 | * Since cfg80211_disable_40mhz_24ghz is global, we can | |
831 | * modify the sband's ht data even if the driver uses a | |
832 | * global structure for that. | |
833 | */ | |
834 | if (cfg80211_disable_40mhz_24ghz && | |
57fbcce3 | 835 | band == NL80211_BAND_2GHZ && |
40db6c77 AK |
836 | sband->ht_cap.ht_supported) { |
837 | sband->ht_cap.cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; | |
838 | sband->ht_cap.cap &= ~IEEE80211_HT_CAP_SGI_40; | |
839 | } | |
840 | ||
881d948c JB |
841 | /* |
842 | * Since we use a u32 for rate bitmaps in | |
843 | * ieee80211_get_response_rate, we cannot | |
844 | * have more than 32 legacy rates. | |
845 | */ | |
846 | if (WARN_ON(sband->n_bitrates > 32)) | |
8318d78a | 847 | return -EINVAL; |
8318d78a JB |
848 | |
849 | for (i = 0; i < sband->n_channels; i++) { | |
850 | sband->channels[i].orig_flags = | |
851 | sband->channels[i].flags; | |
c4a9fafc | 852 | sband->channels[i].orig_mag = INT_MAX; |
8318d78a JB |
853 | sband->channels[i].orig_mpwr = |
854 | sband->channels[i].max_power; | |
855 | sband->channels[i].band = band; | |
be689f68 JB |
856 | |
857 | if (WARN_ON(sband->channels[i].freq_offset >= 1000)) | |
858 | return -EINVAL; | |
8318d78a JB |
859 | } |
860 | ||
c4cbaf79 LC |
861 | for (i = 0; i < sband->n_iftype_data; i++) { |
862 | const struct ieee80211_sband_iftype_data *iftd; | |
863 | ||
864 | iftd = &sband->iftype_data[i]; | |
865 | ||
866 | if (WARN_ON(!iftd->types_mask)) | |
867 | return -EINVAL; | |
868 | if (WARN_ON(types & iftd->types_mask)) | |
869 | return -EINVAL; | |
870 | ||
871 | /* at least one piece of information must be present */ | |
872 | if (WARN_ON(!iftd->he_cap.has_he)) | |
873 | return -EINVAL; | |
874 | ||
875 | types |= iftd->types_mask; | |
f4381365 JB |
876 | |
877 | if (i == 0) | |
878 | have_he = iftd->he_cap.has_he; | |
879 | else | |
880 | have_he = have_he && | |
881 | iftd->he_cap.has_he; | |
c4cbaf79 LC |
882 | } |
883 | ||
f4381365 JB |
884 | if (WARN_ON(!have_he && band == NL80211_BAND_6GHZ)) |
885 | return -EINVAL; | |
886 | ||
8318d78a JB |
887 | have_band = true; |
888 | } | |
889 | ||
890 | if (!have_band) { | |
891 | WARN_ON(1); | |
892 | return -EINVAL; | |
893 | } | |
894 | ||
901bb989 JB |
895 | for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) { |
896 | /* | |
897 | * Validate we have a policy (can be explicitly set to | |
898 | * VENDOR_CMD_RAW_DATA which is non-NULL) and also that | |
899 | * we have at least one of doit/dumpit. | |
900 | */ | |
901 | if (WARN_ON(!rdev->wiphy.vendor_commands[i].policy)) | |
902 | return -EINVAL; | |
903 | if (WARN_ON(!rdev->wiphy.vendor_commands[i].doit && | |
904 | !rdev->wiphy.vendor_commands[i].dumpit)) | |
905 | return -EINVAL; | |
906 | } | |
907 | ||
dfb89c56 | 908 | #ifdef CONFIG_PM |
964dc9e2 JB |
909 | if (WARN_ON(rdev->wiphy.wowlan && rdev->wiphy.wowlan->n_patterns && |
910 | (!rdev->wiphy.wowlan->pattern_min_len || | |
911 | rdev->wiphy.wowlan->pattern_min_len > | |
912 | rdev->wiphy.wowlan->pattern_max_len))) | |
913 | return -EINVAL; | |
dfb89c56 | 914 | #endif |
ff1b6e69 | 915 | |
8318d78a JB |
916 | /* check and set up bitrates */ |
917 | ieee80211_set_bitrate_flags(wiphy); | |
918 | ||
00c3a6ed JB |
919 | rdev->wiphy.features |= NL80211_FEATURE_SCAN_FLUSH; |
920 | ||
aa5f66d5 | 921 | rtnl_lock(); |
79c97e97 | 922 | res = device_add(&rdev->wiphy.dev); |
c3d34d5d | 923 | if (res) { |
aa5f66d5 | 924 | rtnl_unlock(); |
c3d34d5d JL |
925 | return res; |
926 | } | |
1f87f7d3 | 927 | |
5f2aa25e | 928 | list_add_rcu(&rdev->list, &cfg80211_rdev_list); |
f5ea9120 | 929 | cfg80211_rdev_list_generation++; |
704232c2 JB |
930 | |
931 | /* add to debugfs */ | |
d82574a8 GKH |
932 | rdev->wiphy.debugfsdir = debugfs_create_dir(wiphy_name(&rdev->wiphy), |
933 | ieee80211_debugfs_dir); | |
704232c2 | 934 | |
a796dac9 TB |
935 | cfg80211_debugfs_rdev_add(rdev); |
936 | nl80211_notify_wiphy(rdev, NL80211_CMD_NEW_WIPHY); | |
937 | ||
1b7b3ac8 MK |
938 | /* set up regulatory info */ |
939 | wiphy_regulatory_register(wiphy); | |
940 | ||
a2f73b6c | 941 | if (wiphy->regulatory_flags & REGULATORY_CUSTOM_REG) { |
73d54c9e LR |
942 | struct regulatory_request request; |
943 | ||
944 | request.wiphy_idx = get_wiphy_idx(wiphy); | |
945 | request.initiator = NL80211_REGDOM_SET_BY_DRIVER; | |
946 | request.alpha2[0] = '9'; | |
947 | request.alpha2[1] = '9'; | |
948 | ||
949 | nl80211_send_reg_change_event(&request); | |
950 | } | |
951 | ||
019ae3a9 KV |
952 | /* Check that nobody globally advertises any capabilities they do not |
953 | * advertise on all possible interface types. | |
954 | */ | |
955 | if (wiphy->extended_capabilities_len && | |
956 | wiphy->num_iftype_ext_capab && | |
957 | wiphy->iftype_ext_capab) { | |
958 | u8 supported_on_all, j; | |
959 | const struct wiphy_iftype_ext_capab *capab; | |
960 | ||
961 | capab = wiphy->iftype_ext_capab; | |
962 | for (j = 0; j < wiphy->extended_capabilities_len; j++) { | |
963 | if (capab[0].extended_capabilities_len > j) | |
964 | supported_on_all = | |
965 | capab[0].extended_capabilities[j]; | |
966 | else | |
967 | supported_on_all = 0x00; | |
968 | for (i = 1; i < wiphy->num_iftype_ext_capab; i++) { | |
969 | if (j >= capab[i].extended_capabilities_len) { | |
970 | supported_on_all = 0x00; | |
971 | break; | |
972 | } | |
973 | supported_on_all &= | |
974 | capab[i].extended_capabilities[j]; | |
975 | } | |
976 | if (WARN_ON(wiphy->extended_capabilities[j] & | |
977 | ~supported_on_all)) | |
978 | break; | |
979 | } | |
980 | } | |
981 | ||
ecb44335 SG |
982 | rdev->wiphy.registered = true; |
983 | rtnl_unlock(); | |
aa5f66d5 | 984 | |
358ae888 | 985 | res = rfkill_register(rdev->wiphy.rfkill); |
aa5f66d5 | 986 | if (res) { |
358ae888 EG |
987 | rfkill_destroy(rdev->wiphy.rfkill); |
988 | rdev->wiphy.rfkill = NULL; | |
aa5f66d5 JB |
989 | wiphy_unregister(&rdev->wiphy); |
990 | return res; | |
991 | } | |
992 | ||
2f0accc1 | 993 | return 0; |
704232c2 JB |
994 | } |
995 | EXPORT_SYMBOL(wiphy_register); | |
996 | ||
1f87f7d3 JB |
997 | void wiphy_rfkill_start_polling(struct wiphy *wiphy) |
998 | { | |
f26cbf40 | 999 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); |
1f87f7d3 | 1000 | |
79c97e97 | 1001 | if (!rdev->ops->rfkill_poll) |
1f87f7d3 | 1002 | return; |
79c97e97 | 1003 | rdev->rfkill_ops.poll = cfg80211_rfkill_poll; |
358ae888 | 1004 | rfkill_resume_polling(wiphy->rfkill); |
1f87f7d3 JB |
1005 | } |
1006 | EXPORT_SYMBOL(wiphy_rfkill_start_polling); | |
1007 | ||
704232c2 JB |
1008 | void wiphy_unregister(struct wiphy *wiphy) |
1009 | { | |
f26cbf40 | 1010 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); |
704232c2 | 1011 | |
ad002395 JB |
1012 | wait_event(rdev->dev_wait, ({ |
1013 | int __count; | |
a05829a7 | 1014 | wiphy_lock(&rdev->wiphy); |
ad002395 | 1015 | __count = rdev->opencount; |
a05829a7 | 1016 | wiphy_unlock(&rdev->wiphy); |
c4f60846 | 1017 | __count == 0; })); |
ad002395 | 1018 | |
358ae888 EG |
1019 | if (rdev->wiphy.rfkill) |
1020 | rfkill_unregister(rdev->wiphy.rfkill); | |
256c90de | 1021 | |
5fe231e8 | 1022 | rtnl_lock(); |
a05829a7 | 1023 | wiphy_lock(&rdev->wiphy); |
3bb20556 | 1024 | nl80211_notify_wiphy(rdev, NL80211_CMD_DEL_WIPHY); |
5fe231e8 JB |
1025 | rdev->wiphy.registered = false; |
1026 | ||
53873f13 | 1027 | WARN_ON(!list_empty(&rdev->wiphy.wdev_list)); |
ad002395 JB |
1028 | |
1029 | /* | |
1030 | * First remove the hardware from everywhere, this makes | |
1031 | * it impossible to find from userspace. | |
1032 | */ | |
7bcfaf2f | 1033 | debugfs_remove_recursive(rdev->wiphy.debugfsdir); |
5f2aa25e JB |
1034 | list_del_rcu(&rdev->list); |
1035 | synchronize_rcu(); | |
f16bfc1c | 1036 | |
bfead080 LR |
1037 | /* |
1038 | * If this device got a regulatory hint tell core its | |
1039 | * free to listen now to a new shiny device regulatory hint | |
1040 | */ | |
1041 | wiphy_regulatory_deregister(wiphy); | |
3f2355cb | 1042 | |
f5ea9120 | 1043 | cfg80211_rdev_list_generation++; |
79c97e97 | 1044 | device_del(&rdev->wiphy.dev); |
704232c2 | 1045 | |
a05829a7 | 1046 | wiphy_unlock(&rdev->wiphy); |
5fe231e8 | 1047 | rtnl_unlock(); |
6682588a | 1048 | |
36e6fea8 | 1049 | flush_work(&rdev->scan_done_wk); |
6682588a | 1050 | cancel_work_sync(&rdev->conn_work); |
6682588a | 1051 | flush_work(&rdev->event_work); |
04f39047 | 1052 | cancel_delayed_work_sync(&rdev->dfs_update_channels_wk); |
a95bfb87 | 1053 | cancel_delayed_work_sync(&rdev->background_cac_done_wk); |
78f22b6a | 1054 | flush_work(&rdev->destroy_work); |
93a1e86c | 1055 | flush_work(&rdev->sched_scan_stop_wk); |
89766727 VT |
1056 | flush_work(&rdev->propagate_radar_detect_wk); |
1057 | flush_work(&rdev->propagate_cac_done_wk); | |
79ea1e12 | 1058 | flush_work(&rdev->mgmt_registrations_update_wk); |
a95bfb87 | 1059 | flush_work(&rdev->background_cac_abort_wk); |
6d52563f | 1060 | |
6abb9cb9 JB |
1061 | #ifdef CONFIG_PM |
1062 | if (rdev->wiphy.wowlan_config && rdev->ops->set_wakeup) | |
e35e4d28 | 1063 | rdev_set_wakeup(rdev, false); |
6abb9cb9 | 1064 | #endif |
6d52563f | 1065 | cfg80211_rdev_free_wowlan(rdev); |
be29b99a | 1066 | cfg80211_rdev_free_coalesce(rdev); |
704232c2 JB |
1067 | } |
1068 | EXPORT_SYMBOL(wiphy_unregister); | |
1069 | ||
79c97e97 | 1070 | void cfg80211_dev_free(struct cfg80211_registered_device *rdev) |
704232c2 | 1071 | { |
2a519311 | 1072 | struct cfg80211_internal_bss *scan, *tmp; |
37c73b5f | 1073 | struct cfg80211_beacon_registration *reg, *treg; |
358ae888 | 1074 | rfkill_destroy(rdev->wiphy.rfkill); |
37c73b5f BG |
1075 | list_for_each_entry_safe(reg, treg, &rdev->beacon_registrations, list) { |
1076 | list_del(®->list); | |
1077 | kfree(reg); | |
1078 | } | |
79c97e97 | 1079 | list_for_each_entry_safe(scan, tmp, &rdev->bss_list, list) |
5b112d3d | 1080 | cfg80211_put_bss(&rdev->wiphy, &scan->pub); |
a05829a7 | 1081 | mutex_destroy(&rdev->wiphy.mtx); |
e53e9828 JB |
1082 | |
1083 | /* | |
1084 | * The 'regd' can only be non-NULL if we never finished | |
1085 | * initializing the wiphy and thus never went through the | |
1086 | * unregister path - e.g. in failure scenarios. Thus, it | |
1087 | * cannot have been visible to anyone if non-NULL, so we | |
1088 | * can just free it here. | |
1089 | */ | |
1090 | kfree(rcu_dereference_raw(rdev->wiphy.regd)); | |
1091 | ||
79c97e97 | 1092 | kfree(rdev); |
704232c2 JB |
1093 | } |
1094 | ||
1095 | void wiphy_free(struct wiphy *wiphy) | |
1096 | { | |
1097 | put_device(&wiphy->dev); | |
1098 | } | |
1099 | EXPORT_SYMBOL(wiphy_free); | |
1100 | ||
6f779a66 EG |
1101 | void wiphy_rfkill_set_hw_state_reason(struct wiphy *wiphy, bool blocked, |
1102 | enum rfkill_hard_block_reasons reason) | |
1f87f7d3 | 1103 | { |
f26cbf40 | 1104 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); |
1f87f7d3 | 1105 | |
358ae888 | 1106 | if (rfkill_set_hw_state_reason(wiphy->rfkill, blocked, reason)) |
3cfe91c4 | 1107 | schedule_work(&rdev->rfkill_block); |
1f87f7d3 | 1108 | } |
6f779a66 | 1109 | EXPORT_SYMBOL(wiphy_rfkill_set_hw_state_reason); |
1f87f7d3 | 1110 | |
4a4b8169 AZ |
1111 | void cfg80211_cqm_config_free(struct wireless_dev *wdev) |
1112 | { | |
1113 | kfree(wdev->cqm_config); | |
1114 | wdev->cqm_config = NULL; | |
1115 | } | |
1116 | ||
2fe8ef10 JB |
1117 | static void _cfg80211_unregister_wdev(struct wireless_dev *wdev, |
1118 | bool unregister_netdev) | |
98104fde | 1119 | { |
f26cbf40 | 1120 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); |
98104fde JB |
1121 | |
1122 | ASSERT_RTNL(); | |
a05829a7 | 1123 | lockdep_assert_held(&rdev->wiphy.mtx); |
98104fde | 1124 | |
73350424 JB |
1125 | flush_work(&wdev->pmsr_free_wk); |
1126 | ||
7f8ed01e DK |
1127 | nl80211_notify_iface(rdev, wdev, NL80211_CMD_DEL_INTERFACE); |
1128 | ||
2fe8ef10 JB |
1129 | wdev->registered = false; |
1130 | ||
1131 | if (wdev->netdev) { | |
1132 | sysfs_remove_link(&wdev->netdev->dev.kobj, "phy80211"); | |
1133 | if (unregister_netdev) | |
1134 | unregister_netdevice(wdev->netdev); | |
1135 | } | |
1136 | ||
98104fde | 1137 | list_del_rcu(&wdev->list); |
2fe8ef10 | 1138 | synchronize_net(); |
98104fde JB |
1139 | rdev->devlist_generation++; |
1140 | ||
85dd3da4 JB |
1141 | cfg80211_mlme_purge_registrations(wdev); |
1142 | ||
98104fde JB |
1143 | switch (wdev->iftype) { |
1144 | case NL80211_IFTYPE_P2P_DEVICE: | |
f9f47529 | 1145 | cfg80211_stop_p2p_device(rdev, wdev); |
98104fde | 1146 | break; |
cb3b7d87 AB |
1147 | case NL80211_IFTYPE_NAN: |
1148 | cfg80211_stop_nan(rdev, wdev); | |
1149 | break; | |
98104fde | 1150 | default: |
98104fde JB |
1151 | break; |
1152 | } | |
4a4b8169 | 1153 | |
85dd3da4 | 1154 | #ifdef CONFIG_CFG80211_WEXT |
453431a5 | 1155 | kfree_sensitive(wdev->wext.keys); |
56cb31e1 | 1156 | wdev->wext.keys = NULL; |
85dd3da4 JB |
1157 | #endif |
1158 | /* only initialized if we have a netdev */ | |
1159 | if (wdev->netdev) | |
1160 | flush_work(&wdev->disconnect_wk); | |
1161 | ||
4a4b8169 | 1162 | cfg80211_cqm_config_free(wdev); |
2fe8ef10 JB |
1163 | |
1164 | /* | |
1165 | * Ensure that all events have been processed and | |
1166 | * freed. | |
1167 | */ | |
1168 | cfg80211_process_wdev_events(wdev); | |
1169 | ||
1170 | if (WARN_ON(wdev->current_bss)) { | |
1171 | cfg80211_unhold_bss(wdev->current_bss); | |
1172 | cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub); | |
1173 | wdev->current_bss = NULL; | |
1174 | } | |
98104fde | 1175 | } |
85dd3da4 JB |
1176 | |
1177 | void cfg80211_unregister_wdev(struct wireless_dev *wdev) | |
1178 | { | |
2fe8ef10 | 1179 | _cfg80211_unregister_wdev(wdev, true); |
85dd3da4 | 1180 | } |
98104fde JB |
1181 | EXPORT_SYMBOL(cfg80211_unregister_wdev); |
1182 | ||
f1e3d556 | 1183 | static const struct device_type wiphy_type = { |
053a93dd MH |
1184 | .name = "wlan", |
1185 | }; | |
1186 | ||
dbbae26a MK |
1187 | void cfg80211_update_iface_num(struct cfg80211_registered_device *rdev, |
1188 | enum nl80211_iftype iftype, int num) | |
1189 | { | |
a05829a7 | 1190 | lockdep_assert_held(&rdev->wiphy.mtx); |
dbbae26a MK |
1191 | |
1192 | rdev->num_running_ifaces += num; | |
1193 | if (iftype == NL80211_IFTYPE_MONITOR) | |
1194 | rdev->num_running_monitor_ifaces += num; | |
dbbae26a MK |
1195 | } |
1196 | ||
f04c2203 MK |
1197 | void __cfg80211_leave(struct cfg80211_registered_device *rdev, |
1198 | struct wireless_dev *wdev) | |
81256969 SG |
1199 | { |
1200 | struct net_device *dev = wdev->netdev; | |
ca986ad9 | 1201 | struct cfg80211_sched_scan_request *pos, *tmp; |
81256969 | 1202 | |
a05829a7 | 1203 | lockdep_assert_held(&rdev->wiphy.mtx); |
f04c2203 | 1204 | ASSERT_WDEV_LOCK(wdev); |
24d584d7 | 1205 | |
9bb7e0f2 JB |
1206 | cfg80211_pmsr_wdev_down(wdev); |
1207 | ||
a95bfb87 | 1208 | cfg80211_stop_background_radar_detection(wdev); |
bc2dfc02 | 1209 | |
81256969 SG |
1210 | switch (wdev->iftype) { |
1211 | case NL80211_IFTYPE_ADHOC: | |
f04c2203 | 1212 | __cfg80211_leave_ibss(rdev, dev, true); |
81256969 SG |
1213 | break; |
1214 | case NL80211_IFTYPE_P2P_CLIENT: | |
1215 | case NL80211_IFTYPE_STATION: | |
ca986ad9 AVS |
1216 | list_for_each_entry_safe(pos, tmp, &rdev->sched_scan_req_list, |
1217 | list) { | |
1218 | if (dev == pos->dev) | |
1219 | cfg80211_stop_sched_scan_req(rdev, pos, false); | |
1220 | } | |
81256969 | 1221 | |
81256969 SG |
1222 | #ifdef CONFIG_CFG80211_WEXT |
1223 | kfree(wdev->wext.ie); | |
1224 | wdev->wext.ie = NULL; | |
1225 | wdev->wext.ie_len = 0; | |
1226 | wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC; | |
1227 | #endif | |
83739b03 JB |
1228 | cfg80211_disconnect(rdev, dev, |
1229 | WLAN_REASON_DEAUTH_LEAVING, true); | |
81256969 SG |
1230 | break; |
1231 | case NL80211_IFTYPE_MESH_POINT: | |
f04c2203 | 1232 | __cfg80211_leave_mesh(rdev, dev); |
81256969 SG |
1233 | break; |
1234 | case NL80211_IFTYPE_AP: | |
74418ede | 1235 | case NL80211_IFTYPE_P2P_GO: |
f04c2203 | 1236 | __cfg80211_stop_ap(rdev, dev, true); |
81256969 | 1237 | break; |
6e0bd6c3 RL |
1238 | case NL80211_IFTYPE_OCB: |
1239 | __cfg80211_leave_ocb(rdev, dev); | |
1240 | break; | |
de4fcbad | 1241 | case NL80211_IFTYPE_P2P_DEVICE: |
cb3b7d87 | 1242 | case NL80211_IFTYPE_NAN: |
de4fcbad JB |
1243 | /* cannot happen, has no netdev */ |
1244 | break; | |
1245 | case NL80211_IFTYPE_AP_VLAN: | |
1246 | case NL80211_IFTYPE_MONITOR: | |
1247 | /* nothing to do */ | |
1248 | break; | |
1249 | case NL80211_IFTYPE_UNSPECIFIED: | |
e7e0517c | 1250 | case NL80211_IFTYPE_WDS: |
de4fcbad JB |
1251 | case NUM_NL80211_IFTYPES: |
1252 | /* invalid */ | |
81256969 SG |
1253 | break; |
1254 | } | |
81256969 SG |
1255 | } |
1256 | ||
f04c2203 MK |
1257 | void cfg80211_leave(struct cfg80211_registered_device *rdev, |
1258 | struct wireless_dev *wdev) | |
1259 | { | |
1260 | wdev_lock(wdev); | |
1261 | __cfg80211_leave(rdev, wdev); | |
1262 | wdev_unlock(wdev); | |
1263 | } | |
1264 | ||
1265 | void cfg80211_stop_iface(struct wiphy *wiphy, struct wireless_dev *wdev, | |
1266 | gfp_t gfp) | |
1267 | { | |
1268 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); | |
1269 | struct cfg80211_event *ev; | |
1270 | unsigned long flags; | |
1271 | ||
1272 | trace_cfg80211_stop_iface(wiphy, wdev); | |
1273 | ||
1274 | ev = kzalloc(sizeof(*ev), gfp); | |
1275 | if (!ev) | |
1276 | return; | |
1277 | ||
1278 | ev->type = EVENT_STOPPED; | |
1279 | ||
1280 | spin_lock_irqsave(&wdev->event_lock, flags); | |
1281 | list_add_tail(&ev->list, &wdev->event_list); | |
1282 | spin_unlock_irqrestore(&wdev->event_lock, flags); | |
1283 | queue_work(cfg80211_wq, &rdev->event_work); | |
1284 | } | |
1285 | EXPORT_SYMBOL(cfg80211_stop_iface); | |
1286 | ||
9bdaf3b9 | 1287 | void cfg80211_init_wdev(struct wireless_dev *wdev) |
e4d4216e JB |
1288 | { |
1289 | mutex_init(&wdev->mtx); | |
1290 | INIT_LIST_HEAD(&wdev->event_list); | |
1291 | spin_lock_init(&wdev->event_lock); | |
1292 | INIT_LIST_HEAD(&wdev->mgmt_registrations); | |
9bb7e0f2 JB |
1293 | INIT_LIST_HEAD(&wdev->pmsr_list); |
1294 | spin_lock_init(&wdev->pmsr_lock); | |
1295 | INIT_WORK(&wdev->pmsr_free_wk, cfg80211_pmsr_free_wk); | |
e4d4216e | 1296 | |
9bdaf3b9 JB |
1297 | #ifdef CONFIG_CFG80211_WEXT |
1298 | wdev->wext.default_key = -1; | |
1299 | wdev->wext.default_mgmt_key = -1; | |
1300 | wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC; | |
1301 | #endif | |
1302 | ||
1303 | if (wdev->wiphy->flags & WIPHY_FLAG_PS_ON_BY_DEFAULT) | |
1304 | wdev->ps = true; | |
1305 | else | |
1306 | wdev->ps = false; | |
1307 | /* allow mac80211 to determine the timeout */ | |
1308 | wdev->ps_timeout = -1; | |
1309 | ||
1310 | if ((wdev->iftype == NL80211_IFTYPE_STATION || | |
1311 | wdev->iftype == NL80211_IFTYPE_P2P_CLIENT || | |
1312 | wdev->iftype == NL80211_IFTYPE_ADHOC) && !wdev->use_4addr) | |
1313 | wdev->netdev->priv_flags |= IFF_DONT_BRIDGE; | |
1314 | ||
1315 | INIT_WORK(&wdev->disconnect_wk, cfg80211_autodisconnect_wk); | |
1316 | } | |
1317 | ||
1318 | void cfg80211_register_wdev(struct cfg80211_registered_device *rdev, | |
1319 | struct wireless_dev *wdev) | |
1320 | { | |
a05829a7 JB |
1321 | ASSERT_RTNL(); |
1322 | lockdep_assert_held(&rdev->wiphy.mtx); | |
1323 | ||
e4d4216e JB |
1324 | /* |
1325 | * We get here also when the interface changes network namespaces, | |
1326 | * as it's registered into the new one, but we don't want it to | |
1327 | * change ID in that case. Checking if the ID is already assigned | |
1328 | * works, because 0 isn't considered a valid ID and the memory is | |
1329 | * 0-initialized. | |
1330 | */ | |
1331 | if (!wdev->identifier) | |
1332 | wdev->identifier = ++rdev->wdev_id; | |
1333 | list_add_rcu(&wdev->list, &rdev->wiphy.wdev_list); | |
1334 | rdev->devlist_generation++; | |
2fe8ef10 | 1335 | wdev->registered = true; |
ec8f170b | 1336 | |
43076c1e JB |
1337 | if (wdev->netdev && |
1338 | sysfs_create_link(&wdev->netdev->dev.kobj, &rdev->wiphy.dev.kobj, | |
1339 | "phy80211")) | |
1340 | pr_err("failed to add phy80211 symlink to netdev!\n"); | |
1341 | ||
ec8f170b | 1342 | nl80211_notify_iface(rdev, wdev, NL80211_CMD_NEW_INTERFACE); |
e4d4216e JB |
1343 | } |
1344 | ||
2fe8ef10 JB |
1345 | int cfg80211_register_netdevice(struct net_device *dev) |
1346 | { | |
1347 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
1348 | struct cfg80211_registered_device *rdev; | |
1349 | int ret; | |
1350 | ||
1351 | ASSERT_RTNL(); | |
1352 | ||
1353 | if (WARN_ON(!wdev)) | |
1354 | return -EINVAL; | |
1355 | ||
1356 | rdev = wiphy_to_rdev(wdev->wiphy); | |
1357 | ||
1358 | lockdep_assert_held(&rdev->wiphy.mtx); | |
1359 | ||
1360 | /* we'll take care of this */ | |
1361 | wdev->registered = true; | |
40c575d1 | 1362 | wdev->registering = true; |
2fe8ef10 JB |
1363 | ret = register_netdevice(dev); |
1364 | if (ret) | |
1365 | goto out; | |
1366 | ||
2fe8ef10 JB |
1367 | cfg80211_register_wdev(rdev, wdev); |
1368 | ret = 0; | |
1369 | out: | |
40c575d1 | 1370 | wdev->registering = false; |
2fe8ef10 JB |
1371 | if (ret) |
1372 | wdev->registered = false; | |
1373 | return ret; | |
1374 | } | |
1375 | EXPORT_SYMBOL(cfg80211_register_netdevice); | |
1376 | ||
c4f60846 | 1377 | static int cfg80211_netdev_notifier_call(struct notifier_block *nb, |
351638e7 | 1378 | unsigned long state, void *ptr) |
704232c2 | 1379 | { |
351638e7 | 1380 | struct net_device *dev = netdev_notifier_info_to_dev(ptr); |
2a783c13 | 1381 | struct wireless_dev *wdev = dev->ieee80211_ptr; |
704232c2 | 1382 | struct cfg80211_registered_device *rdev; |
ca986ad9 | 1383 | struct cfg80211_sched_scan_request *pos, *tmp; |
704232c2 | 1384 | |
2a783c13 | 1385 | if (!wdev) |
1f87f7d3 | 1386 | return NOTIFY_DONE; |
704232c2 | 1387 | |
f26cbf40 | 1388 | rdev = wiphy_to_rdev(wdev->wiphy); |
704232c2 | 1389 | |
2a783c13 | 1390 | WARN_ON(wdev->iftype == NL80211_IFTYPE_UNSPECIFIED); |
60719ffd | 1391 | |
704232c2 | 1392 | switch (state) { |
053a93dd MH |
1393 | case NETDEV_POST_INIT: |
1394 | SET_NETDEV_DEVTYPE(dev, &wiphy_type); | |
9bdaf3b9 JB |
1395 | wdev->netdev = dev; |
1396 | /* can only change netns with wiphy */ | |
1397 | dev->features |= NETIF_F_NETNS_LOCAL; | |
1398 | ||
1399 | cfg80211_init_wdev(wdev); | |
053a93dd | 1400 | break; |
704232c2 | 1401 | case NETDEV_REGISTER: |
a05829a7 JB |
1402 | if (!wdev->registered) { |
1403 | wiphy_lock(&rdev->wiphy); | |
2fe8ef10 | 1404 | cfg80211_register_wdev(rdev, wdev); |
a05829a7 JB |
1405 | wiphy_unlock(&rdev->wiphy); |
1406 | } | |
2fe8ef10 JB |
1407 | break; |
1408 | case NETDEV_UNREGISTER: | |
0ff6ce7b | 1409 | /* |
2fe8ef10 JB |
1410 | * It is possible to get NETDEV_UNREGISTER multiple times, |
1411 | * so check wdev->registered. | |
0ff6ce7b | 1412 | */ |
40c575d1 | 1413 | if (wdev->registered && !wdev->registering) { |
a05829a7 | 1414 | wiphy_lock(&rdev->wiphy); |
2fe8ef10 | 1415 | _cfg80211_unregister_wdev(wdev, false); |
a05829a7 JB |
1416 | wiphy_unlock(&rdev->wiphy); |
1417 | } | |
704232c2 | 1418 | break; |
04a773ad | 1419 | case NETDEV_GOING_DOWN: |
a05829a7 | 1420 | wiphy_lock(&rdev->wiphy); |
81256969 | 1421 | cfg80211_leave(rdev, wdev); |
a05829a7 | 1422 | wiphy_unlock(&rdev->wiphy); |
01a0ac41 JB |
1423 | break; |
1424 | case NETDEV_DOWN: | |
a05829a7 | 1425 | wiphy_lock(&rdev->wiphy); |
dbbae26a | 1426 | cfg80211_update_iface_num(rdev, wdev->iftype, -1); |
a617302c | 1427 | if (rdev->scan_req && rdev->scan_req->wdev == wdev) { |
c8cb5b85 TM |
1428 | if (WARN_ON(!rdev->scan_req->notified && |
1429 | (!rdev->int_scan_req || | |
1430 | !rdev->int_scan_req->notified))) | |
1d76250b | 1431 | rdev->scan_req->info.aborted = true; |
f9d15d16 | 1432 | ___cfg80211_scan_done(rdev, false); |
a617302c | 1433 | } |
5fe231e8 | 1434 | |
ca986ad9 AVS |
1435 | list_for_each_entry_safe(pos, tmp, |
1436 | &rdev->sched_scan_req_list, list) { | |
d25d062f | 1437 | if (WARN_ON(pos->dev == wdev->netdev)) |
ca986ad9 | 1438 | cfg80211_stop_sched_scan_req(rdev, pos, false); |
5fe231e8 JB |
1439 | } |
1440 | ||
1441 | rdev->opencount--; | |
a05829a7 | 1442 | wiphy_unlock(&rdev->wiphy); |
5fe231e8 | 1443 | wake_up(&rdev->dev_wait); |
04a773ad JB |
1444 | break; |
1445 | case NETDEV_UP: | |
a05829a7 | 1446 | wiphy_lock(&rdev->wiphy); |
4290cb4b | 1447 | cfg80211_update_iface_num(rdev, wdev->iftype, 1); |
667503dd | 1448 | wdev_lock(wdev); |
f2129354 | 1449 | switch (wdev->iftype) { |
29cbe68c | 1450 | #ifdef CONFIG_CFG80211_WEXT |
f2129354 | 1451 | case NL80211_IFTYPE_ADHOC: |
fffd0934 | 1452 | cfg80211_ibss_wext_join(rdev, wdev); |
04a773ad | 1453 | break; |
f2129354 | 1454 | case NL80211_IFTYPE_STATION: |
fffd0934 | 1455 | cfg80211_mgd_wext_connect(rdev, wdev); |
f2129354 | 1456 | break; |
29cbe68c | 1457 | #endif |
c80d545d | 1458 | #ifdef CONFIG_MAC80211_MESH |
29cbe68c | 1459 | case NL80211_IFTYPE_MESH_POINT: |
c80d545d JC |
1460 | { |
1461 | /* backward compat code... */ | |
1462 | struct mesh_setup setup; | |
1463 | memcpy(&setup, &default_mesh_setup, | |
1464 | sizeof(setup)); | |
1465 | /* back compat only needed for mesh_id */ | |
1466 | setup.mesh_id = wdev->ssid; | |
1467 | setup.mesh_id_len = wdev->mesh_id_up_len; | |
1468 | if (wdev->mesh_id_up_len) | |
1469 | __cfg80211_join_mesh(rdev, dev, | |
1470 | &setup, | |
1471 | &default_mesh_config); | |
1472 | break; | |
1473 | } | |
1474 | #endif | |
f2129354 | 1475 | default: |
04a773ad | 1476 | break; |
f2129354 | 1477 | } |
667503dd | 1478 | wdev_unlock(wdev); |
ad002395 | 1479 | rdev->opencount++; |
bf6a0579 JO |
1480 | |
1481 | /* | |
1482 | * Configure power management to the driver here so that its | |
1483 | * correctly set also after interface type changes etc. | |
1484 | */ | |
5966f2dd EP |
1485 | if ((wdev->iftype == NL80211_IFTYPE_STATION || |
1486 | wdev->iftype == NL80211_IFTYPE_P2P_CLIENT) && | |
d4f29978 JB |
1487 | rdev->ops->set_power_mgmt && |
1488 | rdev_set_power_mgmt(rdev, dev, wdev->ps, | |
1489 | wdev->ps_timeout)) { | |
1490 | /* assume this means it's off */ | |
1491 | wdev->ps = false; | |
1492 | } | |
a05829a7 | 1493 | wiphy_unlock(&rdev->wiphy); |
2a783c13 | 1494 | break; |
1f87f7d3 | 1495 | case NETDEV_PRE_UP: |
e6f40511 MP |
1496 | if (!cfg80211_iftype_allowed(wdev->wiphy, wdev->iftype, |
1497 | wdev->use_4addr, 0)) | |
0b20633d | 1498 | return notifier_from_errno(-EOPNOTSUPP); |
33d915d9 | 1499 | |
358ae888 | 1500 | if (rfkill_blocked(rdev->wiphy.rfkill)) |
b6a55015 | 1501 | return notifier_from_errno(-ERFKILL); |
1f87f7d3 | 1502 | break; |
6784c7db ZG |
1503 | default: |
1504 | return NOTIFY_DONE; | |
704232c2 JB |
1505 | } |
1506 | ||
cb150b9d JB |
1507 | wireless_nlevent_flush(); |
1508 | ||
6784c7db | 1509 | return NOTIFY_OK; |
704232c2 JB |
1510 | } |
1511 | ||
1512 | static struct notifier_block cfg80211_netdev_notifier = { | |
1513 | .notifier_call = cfg80211_netdev_notifier_call, | |
1514 | }; | |
1515 | ||
463d0183 JB |
1516 | static void __net_exit cfg80211_pernet_exit(struct net *net) |
1517 | { | |
1518 | struct cfg80211_registered_device *rdev; | |
1519 | ||
1520 | rtnl_lock(); | |
463d0183 JB |
1521 | list_for_each_entry(rdev, &cfg80211_rdev_list, list) { |
1522 | if (net_eq(wiphy_net(&rdev->wiphy), net)) | |
1523 | WARN_ON(cfg80211_switch_netns(rdev, &init_net)); | |
1524 | } | |
463d0183 JB |
1525 | rtnl_unlock(); |
1526 | } | |
1527 | ||
1528 | static struct pernet_operations cfg80211_pernet_ops = { | |
1529 | .exit = cfg80211_pernet_exit, | |
1530 | }; | |
1531 | ||
1532 | static int __init cfg80211_init(void) | |
704232c2 | 1533 | { |
b2e1b302 LR |
1534 | int err; |
1535 | ||
463d0183 JB |
1536 | err = register_pernet_device(&cfg80211_pernet_ops); |
1537 | if (err) | |
1538 | goto out_fail_pernet; | |
1539 | ||
b2e1b302 | 1540 | err = wiphy_sysfs_init(); |
704232c2 JB |
1541 | if (err) |
1542 | goto out_fail_sysfs; | |
1543 | ||
1544 | err = register_netdevice_notifier(&cfg80211_netdev_notifier); | |
1545 | if (err) | |
1546 | goto out_fail_notifier; | |
1547 | ||
55682965 JB |
1548 | err = nl80211_init(); |
1549 | if (err) | |
1550 | goto out_fail_nl80211; | |
1551 | ||
704232c2 JB |
1552 | ieee80211_debugfs_dir = debugfs_create_dir("ieee80211", NULL); |
1553 | ||
b2e1b302 LR |
1554 | err = regulatory_init(); |
1555 | if (err) | |
1556 | goto out_fail_reg; | |
1557 | ||
e4819013 | 1558 | cfg80211_wq = alloc_ordered_workqueue("cfg80211", WQ_MEM_RECLAIM); |
f00f188f WY |
1559 | if (!cfg80211_wq) { |
1560 | err = -ENOMEM; | |
e60d7443 | 1561 | goto out_fail_wq; |
f00f188f | 1562 | } |
e60d7443 | 1563 | |
704232c2 JB |
1564 | return 0; |
1565 | ||
e60d7443 AB |
1566 | out_fail_wq: |
1567 | regulatory_exit(); | |
b2e1b302 LR |
1568 | out_fail_reg: |
1569 | debugfs_remove(ieee80211_debugfs_dir); | |
81daf735 | 1570 | nl80211_exit(); |
55682965 JB |
1571 | out_fail_nl80211: |
1572 | unregister_netdevice_notifier(&cfg80211_netdev_notifier); | |
704232c2 JB |
1573 | out_fail_notifier: |
1574 | wiphy_sysfs_exit(); | |
1575 | out_fail_sysfs: | |
463d0183 JB |
1576 | unregister_pernet_device(&cfg80211_pernet_ops); |
1577 | out_fail_pernet: | |
704232c2 JB |
1578 | return err; |
1579 | } | |
007f6c5e | 1580 | fs_initcall(cfg80211_init); |
704232c2 | 1581 | |
f884e387 | 1582 | static void __exit cfg80211_exit(void) |
704232c2 JB |
1583 | { |
1584 | debugfs_remove(ieee80211_debugfs_dir); | |
55682965 | 1585 | nl80211_exit(); |
704232c2 JB |
1586 | unregister_netdevice_notifier(&cfg80211_netdev_notifier); |
1587 | wiphy_sysfs_exit(); | |
b2e1b302 | 1588 | regulatory_exit(); |
463d0183 | 1589 | unregister_pernet_device(&cfg80211_pernet_ops); |
e60d7443 | 1590 | destroy_workqueue(cfg80211_wq); |
704232c2 JB |
1591 | } |
1592 | module_exit(cfg80211_exit); |