Commit | Line | Data |
---|---|---|
704232c2 JB |
1 | /* |
2 | * This is the linux wireless configuration interface. | |
3 | * | |
5f2aa25e | 4 | * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net> |
704232c2 JB |
5 | */ |
6 | ||
e9c0268f JP |
7 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
8 | ||
704232c2 JB |
9 | #include <linux/if.h> |
10 | #include <linux/module.h> | |
11 | #include <linux/err.h> | |
704232c2 | 12 | #include <linux/list.h> |
5a0e3ad6 | 13 | #include <linux/slab.h> |
704232c2 JB |
14 | #include <linux/nl80211.h> |
15 | #include <linux/debugfs.h> | |
16 | #include <linux/notifier.h> | |
17 | #include <linux/device.h> | |
16a832e7 | 18 | #include <linux/etherdevice.h> |
1f87f7d3 | 19 | #include <linux/rtnetlink.h> |
d43c36dc | 20 | #include <linux/sched.h> |
704232c2 JB |
21 | #include <net/genetlink.h> |
22 | #include <net/cfg80211.h> | |
55682965 | 23 | #include "nl80211.h" |
704232c2 JB |
24 | #include "core.h" |
25 | #include "sysfs.h" | |
1ac61302 | 26 | #include "debugfs.h" |
a9a11622 | 27 | #include "wext-compat.h" |
e35e4d28 | 28 | #include "rdev-ops.h" |
704232c2 JB |
29 | |
30 | /* name for sysfs, %d is appended */ | |
31 | #define PHY_NAME "phy" | |
32 | ||
33 | MODULE_AUTHOR("Johannes Berg"); | |
34 | MODULE_LICENSE("GPL"); | |
35 | MODULE_DESCRIPTION("wireless configuration support"); | |
fb4e1568 | 36 | MODULE_ALIAS_GENL_FAMILY(NL80211_GENL_NAME); |
704232c2 | 37 | |
5fe231e8 | 38 | /* RCU-protected (and RTNL for writers) */ |
79c97e97 | 39 | LIST_HEAD(cfg80211_rdev_list); |
f5ea9120 | 40 | int cfg80211_rdev_list_generation; |
a1794390 | 41 | |
704232c2 JB |
42 | /* for debugfs */ |
43 | static struct dentry *ieee80211_debugfs_dir; | |
44 | ||
e60d7443 AB |
45 | /* for the cleanup, scan and event works */ |
46 | struct workqueue_struct *cfg80211_wq; | |
47 | ||
40db6c77 AK |
48 | static bool cfg80211_disable_40mhz_24ghz; |
49 | module_param(cfg80211_disable_40mhz_24ghz, bool, 0644); | |
50 | MODULE_PARM_DESC(cfg80211_disable_40mhz_24ghz, | |
51 | "Disable 40MHz support in the 2.4GHz band"); | |
52 | ||
79c97e97 | 53 | struct cfg80211_registered_device *cfg80211_rdev_by_wiphy_idx(int wiphy_idx) |
55682965 | 54 | { |
79c97e97 | 55 | struct cfg80211_registered_device *result = NULL, *rdev; |
55682965 | 56 | |
5fe231e8 | 57 | ASSERT_RTNL(); |
761cf7ec | 58 | |
79c97e97 JB |
59 | list_for_each_entry(rdev, &cfg80211_rdev_list, list) { |
60 | if (rdev->wiphy_idx == wiphy_idx) { | |
61 | result = rdev; | |
55682965 JB |
62 | break; |
63 | } | |
64 | } | |
65 | ||
66 | return result; | |
67 | } | |
68 | ||
806a9e39 LR |
69 | int get_wiphy_idx(struct wiphy *wiphy) |
70 | { | |
f26cbf40 | 71 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); |
f4173766 | 72 | |
79c97e97 | 73 | return rdev->wiphy_idx; |
806a9e39 LR |
74 | } |
75 | ||
806a9e39 LR |
76 | struct wiphy *wiphy_idx_to_wiphy(int wiphy_idx) |
77 | { | |
79c97e97 | 78 | struct cfg80211_registered_device *rdev; |
806a9e39 | 79 | |
5fe231e8 | 80 | ASSERT_RTNL(); |
806a9e39 | 81 | |
79c97e97 JB |
82 | rdev = cfg80211_rdev_by_wiphy_idx(wiphy_idx); |
83 | if (!rdev) | |
806a9e39 | 84 | return NULL; |
79c97e97 | 85 | return &rdev->wiphy; |
806a9e39 LR |
86 | } |
87 | ||
55682965 JB |
88 | int cfg80211_dev_rename(struct cfg80211_registered_device *rdev, |
89 | char *newname) | |
90 | { | |
79c97e97 | 91 | struct cfg80211_registered_device *rdev2; |
7623225f | 92 | int wiphy_idx, taken = -1, result, digits; |
55682965 | 93 | |
5fe231e8 | 94 | ASSERT_RTNL(); |
2940bb69 | 95 | |
7623225f JB |
96 | /* prohibit calling the thing phy%d when %d is not its number */ |
97 | sscanf(newname, PHY_NAME "%d%n", &wiphy_idx, &taken); | |
98 | if (taken == strlen(newname) && wiphy_idx != rdev->wiphy_idx) { | |
99 | /* count number of places needed to print wiphy_idx */ | |
100 | digits = 1; | |
101 | while (wiphy_idx /= 10) | |
102 | digits++; | |
103 | /* | |
104 | * deny the name if it is phy<idx> where <idx> is printed | |
105 | * without leading zeroes. taken == strlen(newname) here | |
106 | */ | |
107 | if (taken == strlen(PHY_NAME) + digits) | |
108 | return -EINVAL; | |
109 | } | |
110 | ||
111 | ||
2940bb69 | 112 | /* Ignore nop renames */ |
2940bb69 | 113 | if (strcmp(newname, dev_name(&rdev->wiphy.dev)) == 0) |
4bbf4d56 | 114 | return 0; |
2940bb69 EB |
115 | |
116 | /* Ensure another device does not already have this name. */ | |
79c97e97 JB |
117 | list_for_each_entry(rdev2, &cfg80211_rdev_list, list) |
118 | if (strcmp(newname, dev_name(&rdev2->wiphy.dev)) == 0) | |
7623225f | 119 | return -EINVAL; |
55682965 | 120 | |
55682965 JB |
121 | result = device_rename(&rdev->wiphy.dev, newname); |
122 | if (result) | |
4bbf4d56 | 123 | return result; |
55682965 | 124 | |
33c0360b JB |
125 | if (rdev->wiphy.debugfsdir && |
126 | !debugfs_rename(rdev->wiphy.debugfsdir->d_parent, | |
55682965 JB |
127 | rdev->wiphy.debugfsdir, |
128 | rdev->wiphy.debugfsdir->d_parent, | |
129 | newname)) | |
e9c0268f | 130 | pr_err("failed to rename debugfs dir to %s!\n", newname); |
55682965 | 131 | |
3bb20556 | 132 | nl80211_notify_wiphy(rdev, NL80211_CMD_NEW_WIPHY); |
55682965 | 133 | |
4bbf4d56 | 134 | return 0; |
55682965 JB |
135 | } |
136 | ||
463d0183 JB |
137 | int cfg80211_switch_netns(struct cfg80211_registered_device *rdev, |
138 | struct net *net) | |
139 | { | |
140 | struct wireless_dev *wdev; | |
141 | int err = 0; | |
142 | ||
5be83de5 | 143 | if (!(rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK)) |
463d0183 JB |
144 | return -EOPNOTSUPP; |
145 | ||
89a54e48 | 146 | list_for_each_entry(wdev, &rdev->wdev_list, list) { |
ba22fb5b JB |
147 | if (!wdev->netdev) |
148 | continue; | |
463d0183 JB |
149 | wdev->netdev->features &= ~NETIF_F_NETNS_LOCAL; |
150 | err = dev_change_net_namespace(wdev->netdev, net, "wlan%d"); | |
151 | if (err) | |
152 | break; | |
153 | wdev->netdev->features |= NETIF_F_NETNS_LOCAL; | |
154 | } | |
155 | ||
156 | if (err) { | |
157 | /* failed -- clean up to old netns */ | |
158 | net = wiphy_net(&rdev->wiphy); | |
159 | ||
89a54e48 | 160 | list_for_each_entry_continue_reverse(wdev, &rdev->wdev_list, |
463d0183 | 161 | list) { |
ba22fb5b JB |
162 | if (!wdev->netdev) |
163 | continue; | |
463d0183 JB |
164 | wdev->netdev->features &= ~NETIF_F_NETNS_LOCAL; |
165 | err = dev_change_net_namespace(wdev->netdev, net, | |
166 | "wlan%d"); | |
167 | WARN_ON(err); | |
168 | wdev->netdev->features |= NETIF_F_NETNS_LOCAL; | |
169 | } | |
04600794 JB |
170 | |
171 | return err; | |
463d0183 JB |
172 | } |
173 | ||
174 | wiphy_net_set(&rdev->wiphy, net); | |
175 | ||
04600794 JB |
176 | err = device_rename(&rdev->wiphy.dev, dev_name(&rdev->wiphy.dev)); |
177 | WARN_ON(err); | |
178 | ||
179 | return 0; | |
463d0183 JB |
180 | } |
181 | ||
1f87f7d3 JB |
182 | static void cfg80211_rfkill_poll(struct rfkill *rfkill, void *data) |
183 | { | |
79c97e97 | 184 | struct cfg80211_registered_device *rdev = data; |
1f87f7d3 | 185 | |
e35e4d28 | 186 | rdev_rfkill_poll(rdev); |
1f87f7d3 JB |
187 | } |
188 | ||
f9f47529 JB |
189 | void cfg80211_stop_p2p_device(struct cfg80211_registered_device *rdev, |
190 | struct wireless_dev *wdev) | |
191 | { | |
5fe231e8 | 192 | ASSERT_RTNL(); |
f9f47529 JB |
193 | |
194 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)) | |
195 | return; | |
196 | ||
197 | if (!wdev->p2p_started) | |
198 | return; | |
199 | ||
200 | rdev_stop_p2p_device(rdev, wdev); | |
201 | wdev->p2p_started = false; | |
202 | ||
203 | rdev->opencount--; | |
204 | ||
a617302c JB |
205 | if (rdev->scan_req && rdev->scan_req->wdev == wdev) { |
206 | if (WARN_ON(!rdev->scan_req->notified)) | |
207 | rdev->scan_req->aborted = true; | |
f9d15d16 | 208 | ___cfg80211_scan_done(rdev, false); |
a617302c | 209 | } |
f9f47529 JB |
210 | } |
211 | ||
f6837ba8 | 212 | void cfg80211_shutdown_all_interfaces(struct wiphy *wiphy) |
1f87f7d3 | 213 | { |
f6837ba8 | 214 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); |
1f87f7d3 JB |
215 | struct wireless_dev *wdev; |
216 | ||
f6837ba8 | 217 | ASSERT_RTNL(); |
f9f47529 | 218 | |
98104fde JB |
219 | list_for_each_entry(wdev, &rdev->wdev_list, list) { |
220 | if (wdev->netdev) { | |
ba22fb5b | 221 | dev_close(wdev->netdev); |
98104fde JB |
222 | continue; |
223 | } | |
224 | /* otherwise, check iftype */ | |
225 | switch (wdev->iftype) { | |
226 | case NL80211_IFTYPE_P2P_DEVICE: | |
f9f47529 | 227 | cfg80211_stop_p2p_device(rdev, wdev); |
98104fde JB |
228 | break; |
229 | default: | |
230 | break; | |
231 | } | |
232 | } | |
f6837ba8 JB |
233 | } |
234 | EXPORT_SYMBOL_GPL(cfg80211_shutdown_all_interfaces); | |
1f87f7d3 | 235 | |
f6837ba8 JB |
236 | static int cfg80211_rfkill_set_block(void *data, bool blocked) |
237 | { | |
238 | struct cfg80211_registered_device *rdev = data; | |
239 | ||
240 | if (!blocked) | |
241 | return 0; | |
242 | ||
243 | rtnl_lock(); | |
244 | cfg80211_shutdown_all_interfaces(&rdev->wiphy); | |
1f87f7d3 JB |
245 | rtnl_unlock(); |
246 | ||
247 | return 0; | |
248 | } | |
249 | ||
250 | static void cfg80211_rfkill_sync_work(struct work_struct *work) | |
251 | { | |
79c97e97 | 252 | struct cfg80211_registered_device *rdev; |
1f87f7d3 | 253 | |
79c97e97 JB |
254 | rdev = container_of(work, struct cfg80211_registered_device, rfkill_sync); |
255 | cfg80211_rfkill_set_block(rdev, rfkill_blocked(rdev->rfkill)); | |
1f87f7d3 JB |
256 | } |
257 | ||
667503dd JB |
258 | static void cfg80211_event_work(struct work_struct *work) |
259 | { | |
260 | struct cfg80211_registered_device *rdev; | |
667503dd JB |
261 | |
262 | rdev = container_of(work, struct cfg80211_registered_device, | |
263 | event_work); | |
264 | ||
265 | rtnl_lock(); | |
3d54d255 | 266 | cfg80211_process_rdev_events(rdev); |
667503dd JB |
267 | rtnl_unlock(); |
268 | } | |
269 | ||
78f22b6a JB |
270 | void cfg80211_destroy_ifaces(struct cfg80211_registered_device *rdev) |
271 | { | |
272 | struct cfg80211_iface_destroy *item; | |
273 | ||
274 | ASSERT_RTNL(); | |
275 | ||
276 | spin_lock_irq(&rdev->destroy_list_lock); | |
277 | while ((item = list_first_entry_or_null(&rdev->destroy_list, | |
278 | struct cfg80211_iface_destroy, | |
279 | list))) { | |
280 | struct wireless_dev *wdev, *tmp; | |
281 | u32 nlportid = item->nlportid; | |
282 | ||
283 | list_del(&item->list); | |
284 | kfree(item); | |
285 | spin_unlock_irq(&rdev->destroy_list_lock); | |
286 | ||
287 | list_for_each_entry_safe(wdev, tmp, &rdev->wdev_list, list) { | |
288 | if (nlportid == wdev->owner_nlportid) | |
289 | rdev_del_virtual_intf(rdev, wdev); | |
290 | } | |
291 | ||
292 | spin_lock_irq(&rdev->destroy_list_lock); | |
293 | } | |
294 | spin_unlock_irq(&rdev->destroy_list_lock); | |
295 | } | |
296 | ||
297 | static void cfg80211_destroy_iface_wk(struct work_struct *work) | |
298 | { | |
299 | struct cfg80211_registered_device *rdev; | |
300 | ||
301 | rdev = container_of(work, struct cfg80211_registered_device, | |
302 | destroy_work); | |
303 | ||
304 | rtnl_lock(); | |
305 | cfg80211_destroy_ifaces(rdev); | |
306 | rtnl_unlock(); | |
307 | } | |
308 | ||
704232c2 JB |
309 | /* exported functions */ |
310 | ||
3dcf670b | 311 | struct wiphy *wiphy_new(const struct cfg80211_ops *ops, int sizeof_priv) |
704232c2 | 312 | { |
73810b77 | 313 | static atomic_t wiphy_counter = ATOMIC_INIT(0); |
7623225f JB |
314 | |
315 | struct cfg80211_registered_device *rdev; | |
704232c2 JB |
316 | int alloc_size; |
317 | ||
0b20633d JB |
318 | WARN_ON(ops->add_key && (!ops->del_key || !ops->set_default_key)); |
319 | WARN_ON(ops->auth && (!ops->assoc || !ops->deauth || !ops->disassoc)); | |
320 | WARN_ON(ops->connect && !ops->disconnect); | |
321 | WARN_ON(ops->join_ibss && !ops->leave_ibss); | |
322 | WARN_ON(ops->add_virtual_intf && !ops->del_virtual_intf); | |
323 | WARN_ON(ops->add_station && !ops->del_station); | |
324 | WARN_ON(ops->add_mpath && !ops->del_mpath); | |
29cbe68c | 325 | WARN_ON(ops->join_mesh && !ops->leave_mesh); |
41ade00f | 326 | |
79c97e97 | 327 | alloc_size = sizeof(*rdev) + sizeof_priv; |
704232c2 | 328 | |
79c97e97 JB |
329 | rdev = kzalloc(alloc_size, GFP_KERNEL); |
330 | if (!rdev) | |
704232c2 JB |
331 | return NULL; |
332 | ||
79c97e97 | 333 | rdev->ops = ops; |
704232c2 | 334 | |
73810b77 | 335 | rdev->wiphy_idx = atomic_inc_return(&wiphy_counter); |
a4d73ee1 | 336 | |
f4173766 | 337 | if (unlikely(rdev->wiphy_idx < 0)) { |
7623225f | 338 | /* ugh, wrapped! */ |
73810b77 | 339 | atomic_dec(&wiphy_counter); |
79c97e97 | 340 | kfree(rdev); |
704232c2 JB |
341 | return NULL; |
342 | } | |
704232c2 | 343 | |
9b881963 JB |
344 | /* atomic_inc_return makes it start at 1, make it start at 0 */ |
345 | rdev->wiphy_idx--; | |
346 | ||
7623225f JB |
347 | /* give it a proper name */ |
348 | dev_set_name(&rdev->wiphy.dev, PHY_NAME "%d", rdev->wiphy_idx); | |
349 | ||
89a54e48 | 350 | INIT_LIST_HEAD(&rdev->wdev_list); |
37c73b5f BG |
351 | INIT_LIST_HEAD(&rdev->beacon_registrations); |
352 | spin_lock_init(&rdev->beacon_registrations_lock); | |
79c97e97 JB |
353 | spin_lock_init(&rdev->bss_lock); |
354 | INIT_LIST_HEAD(&rdev->bss_list); | |
355 | INIT_WORK(&rdev->scan_done_wk, __cfg80211_scan_done); | |
807f8a8c | 356 | INIT_WORK(&rdev->sched_scan_results_wk, __cfg80211_sched_scan_results); |
04f39047 SW |
357 | INIT_DELAYED_WORK(&rdev->dfs_update_channels_wk, |
358 | cfg80211_dfs_channels_update_work); | |
3d23e349 JB |
359 | #ifdef CONFIG_CFG80211_WEXT |
360 | rdev->wiphy.wext = &cfg80211_wext_handler; | |
361 | #endif | |
362 | ||
79c97e97 JB |
363 | device_initialize(&rdev->wiphy.dev); |
364 | rdev->wiphy.dev.class = &ieee80211_class; | |
365 | rdev->wiphy.dev.platform_data = rdev; | |
366 | ||
78f22b6a JB |
367 | INIT_LIST_HEAD(&rdev->destroy_list); |
368 | spin_lock_init(&rdev->destroy_list_lock); | |
369 | INIT_WORK(&rdev->destroy_work, cfg80211_destroy_iface_wk); | |
370 | ||
5be83de5 JB |
371 | #ifdef CONFIG_CFG80211_DEFAULT_PS |
372 | rdev->wiphy.flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT; | |
373 | #endif | |
16cb9d42 | 374 | |
463d0183 JB |
375 | wiphy_net_set(&rdev->wiphy, &init_net); |
376 | ||
79c97e97 JB |
377 | rdev->rfkill_ops.set_block = cfg80211_rfkill_set_block; |
378 | rdev->rfkill = rfkill_alloc(dev_name(&rdev->wiphy.dev), | |
379 | &rdev->wiphy.dev, RFKILL_TYPE_WLAN, | |
380 | &rdev->rfkill_ops, rdev); | |
381 | ||
382 | if (!rdev->rfkill) { | |
383 | kfree(rdev); | |
1f87f7d3 JB |
384 | return NULL; |
385 | } | |
386 | ||
79c97e97 JB |
387 | INIT_WORK(&rdev->rfkill_sync, cfg80211_rfkill_sync_work); |
388 | INIT_WORK(&rdev->conn_work, cfg80211_conn_work); | |
389 | INIT_WORK(&rdev->event_work, cfg80211_event_work); | |
1f87f7d3 | 390 | |
ad002395 JB |
391 | init_waitqueue_head(&rdev->dev_wait); |
392 | ||
b9a5f8ca JM |
393 | /* |
394 | * Initialize wiphy parameters to IEEE 802.11 MIB default values. | |
395 | * Fragmentation and RTS threshold are disabled by default with the | |
396 | * special -1 value. | |
397 | */ | |
79c97e97 JB |
398 | rdev->wiphy.retry_short = 7; |
399 | rdev->wiphy.retry_long = 4; | |
400 | rdev->wiphy.frag_threshold = (u32) -1; | |
401 | rdev->wiphy.rts_threshold = (u32) -1; | |
81077e82 | 402 | rdev->wiphy.coverage_class = 0; |
b9a5f8ca | 403 | |
9a774c78 AO |
404 | rdev->wiphy.max_num_csa_counters = 1; |
405 | ||
79c97e97 | 406 | return &rdev->wiphy; |
704232c2 JB |
407 | } |
408 | EXPORT_SYMBOL(wiphy_new); | |
409 | ||
7527a782 JB |
410 | static int wiphy_verify_combinations(struct wiphy *wiphy) |
411 | { | |
412 | const struct ieee80211_iface_combination *c; | |
413 | int i, j; | |
414 | ||
7527a782 JB |
415 | for (i = 0; i < wiphy->n_iface_combinations; i++) { |
416 | u32 cnt = 0; | |
417 | u16 all_iftypes = 0; | |
418 | ||
419 | c = &wiphy->iface_combinations[i]; | |
420 | ||
11c4a075 SW |
421 | /* |
422 | * Combinations with just one interface aren't real, | |
423 | * however we make an exception for DFS. | |
424 | */ | |
425 | if (WARN_ON((c->max_interfaces < 2) && !c->radar_detect_widths)) | |
7527a782 JB |
426 | return -EINVAL; |
427 | ||
428 | /* Need at least one channel */ | |
429 | if (WARN_ON(!c->num_different_channels)) | |
430 | return -EINVAL; | |
431 | ||
d4e50c59 MK |
432 | /* |
433 | * Put a sane limit on maximum number of different | |
434 | * channels to simplify channel accounting code. | |
435 | */ | |
436 | if (WARN_ON(c->num_different_channels > | |
437 | CFG80211_MAX_NUM_DIFFERENT_CHANNELS)) | |
438 | return -EINVAL; | |
439 | ||
11c4a075 SW |
440 | /* DFS only works on one channel. */ |
441 | if (WARN_ON(c->radar_detect_widths && | |
442 | (c->num_different_channels > 1))) | |
443 | return -EINVAL; | |
444 | ||
7527a782 JB |
445 | if (WARN_ON(!c->n_limits)) |
446 | return -EINVAL; | |
447 | ||
448 | for (j = 0; j < c->n_limits; j++) { | |
449 | u16 types = c->limits[j].types; | |
450 | ||
b6a55015 | 451 | /* interface types shouldn't overlap */ |
7527a782 JB |
452 | if (WARN_ON(types & all_iftypes)) |
453 | return -EINVAL; | |
454 | all_iftypes |= types; | |
455 | ||
456 | if (WARN_ON(!c->limits[j].max)) | |
457 | return -EINVAL; | |
458 | ||
459 | /* Shouldn't list software iftypes in combinations! */ | |
460 | if (WARN_ON(wiphy->software_iftypes & types)) | |
461 | return -EINVAL; | |
462 | ||
98104fde JB |
463 | /* Only a single P2P_DEVICE can be allowed */ |
464 | if (WARN_ON(types & BIT(NL80211_IFTYPE_P2P_DEVICE) && | |
465 | c->limits[j].max > 1)) | |
466 | return -EINVAL; | |
467 | ||
7527a782 JB |
468 | cnt += c->limits[j].max; |
469 | /* | |
470 | * Don't advertise an unsupported type | |
471 | * in a combination. | |
472 | */ | |
473 | if (WARN_ON((wiphy->interface_modes & types) != types)) | |
474 | return -EINVAL; | |
475 | } | |
476 | ||
477 | /* You can't even choose that many! */ | |
478 | if (WARN_ON(cnt < c->max_interfaces)) | |
479 | return -EINVAL; | |
480 | } | |
481 | ||
482 | return 0; | |
483 | } | |
484 | ||
704232c2 JB |
485 | int wiphy_register(struct wiphy *wiphy) |
486 | { | |
f26cbf40 | 487 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); |
704232c2 | 488 | int res; |
8318d78a JB |
489 | enum ieee80211_band band; |
490 | struct ieee80211_supported_band *sband; | |
491 | bool have_band = false; | |
492 | int i; | |
f59ac048 LR |
493 | u16 ifmodes = wiphy->interface_modes; |
494 | ||
dfb89c56 | 495 | #ifdef CONFIG_PM |
964dc9e2 JB |
496 | if (WARN_ON(wiphy->wowlan && |
497 | (wiphy->wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) && | |
498 | !(wiphy->wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY))) | |
499 | return -EINVAL; | |
500 | if (WARN_ON(wiphy->wowlan && | |
501 | !wiphy->wowlan->flags && !wiphy->wowlan->n_patterns && | |
502 | !wiphy->wowlan->tcp)) | |
77dbbb13 | 503 | return -EINVAL; |
dfb89c56 | 504 | #endif |
77dbbb13 | 505 | |
be29b99a AK |
506 | if (WARN_ON(wiphy->coalesce && |
507 | (!wiphy->coalesce->n_rules || | |
508 | !wiphy->coalesce->n_patterns) && | |
509 | (!wiphy->coalesce->pattern_min_len || | |
510 | wiphy->coalesce->pattern_min_len > | |
511 | wiphy->coalesce->pattern_max_len))) | |
512 | return -EINVAL; | |
513 | ||
562a7480 JB |
514 | if (WARN_ON(wiphy->ap_sme_capa && |
515 | !(wiphy->flags & WIPHY_FLAG_HAVE_AP_SME))) | |
516 | return -EINVAL; | |
517 | ||
ef15aac6 JB |
518 | if (WARN_ON(wiphy->addresses && !wiphy->n_addresses)) |
519 | return -EINVAL; | |
520 | ||
521 | if (WARN_ON(wiphy->addresses && | |
522 | !is_zero_ether_addr(wiphy->perm_addr) && | |
523 | memcmp(wiphy->perm_addr, wiphy->addresses[0].addr, | |
524 | ETH_ALEN))) | |
525 | return -EINVAL; | |
526 | ||
77765eaf VT |
527 | if (WARN_ON(wiphy->max_acl_mac_addrs && |
528 | (!(wiphy->flags & WIPHY_FLAG_HAVE_AP_SME) || | |
529 | !rdev->ops->set_mac_acl))) | |
530 | return -EINVAL; | |
531 | ||
ef15aac6 JB |
532 | if (wiphy->addresses) |
533 | memcpy(wiphy->perm_addr, wiphy->addresses[0].addr, ETH_ALEN); | |
534 | ||
f59ac048 LR |
535 | /* sanity check ifmodes */ |
536 | WARN_ON(!ifmodes); | |
2e161f78 | 537 | ifmodes &= ((1 << NUM_NL80211_IFTYPES) - 1) & ~1; |
f59ac048 LR |
538 | if (WARN_ON(ifmodes != wiphy->interface_modes)) |
539 | wiphy->interface_modes = ifmodes; | |
8318d78a | 540 | |
7527a782 JB |
541 | res = wiphy_verify_combinations(wiphy); |
542 | if (res) | |
543 | return res; | |
544 | ||
8318d78a JB |
545 | /* sanity check supported bands/channels */ |
546 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { | |
547 | sband = wiphy->bands[band]; | |
548 | if (!sband) | |
549 | continue; | |
550 | ||
551 | sband->band = band; | |
3a0c52a6 VK |
552 | if (WARN_ON(!sband->n_channels)) |
553 | return -EINVAL; | |
554 | /* | |
555 | * on 60gHz band, there are no legacy rates, so | |
556 | * n_bitrates is 0 | |
557 | */ | |
558 | if (WARN_ON(band != IEEE80211_BAND_60GHZ && | |
559 | !sband->n_bitrates)) | |
881d948c JB |
560 | return -EINVAL; |
561 | ||
40db6c77 AK |
562 | /* |
563 | * Since cfg80211_disable_40mhz_24ghz is global, we can | |
564 | * modify the sband's ht data even if the driver uses a | |
565 | * global structure for that. | |
566 | */ | |
567 | if (cfg80211_disable_40mhz_24ghz && | |
568 | band == IEEE80211_BAND_2GHZ && | |
569 | sband->ht_cap.ht_supported) { | |
570 | sband->ht_cap.cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; | |
571 | sband->ht_cap.cap &= ~IEEE80211_HT_CAP_SGI_40; | |
572 | } | |
573 | ||
881d948c JB |
574 | /* |
575 | * Since we use a u32 for rate bitmaps in | |
576 | * ieee80211_get_response_rate, we cannot | |
577 | * have more than 32 legacy rates. | |
578 | */ | |
579 | if (WARN_ON(sband->n_bitrates > 32)) | |
8318d78a | 580 | return -EINVAL; |
8318d78a JB |
581 | |
582 | for (i = 0; i < sband->n_channels; i++) { | |
583 | sband->channels[i].orig_flags = | |
584 | sband->channels[i].flags; | |
c4a9fafc | 585 | sband->channels[i].orig_mag = INT_MAX; |
8318d78a JB |
586 | sband->channels[i].orig_mpwr = |
587 | sband->channels[i].max_power; | |
588 | sband->channels[i].band = band; | |
589 | } | |
590 | ||
591 | have_band = true; | |
592 | } | |
593 | ||
594 | if (!have_band) { | |
595 | WARN_ON(1); | |
596 | return -EINVAL; | |
597 | } | |
598 | ||
dfb89c56 | 599 | #ifdef CONFIG_PM |
964dc9e2 JB |
600 | if (WARN_ON(rdev->wiphy.wowlan && rdev->wiphy.wowlan->n_patterns && |
601 | (!rdev->wiphy.wowlan->pattern_min_len || | |
602 | rdev->wiphy.wowlan->pattern_min_len > | |
603 | rdev->wiphy.wowlan->pattern_max_len))) | |
604 | return -EINVAL; | |
dfb89c56 | 605 | #endif |
ff1b6e69 | 606 | |
8318d78a JB |
607 | /* check and set up bitrates */ |
608 | ieee80211_set_bitrate_flags(wiphy); | |
609 | ||
00c3a6ed JB |
610 | rdev->wiphy.features |= NL80211_FEATURE_SCAN_FLUSH; |
611 | ||
aa5f66d5 | 612 | rtnl_lock(); |
79c97e97 | 613 | res = device_add(&rdev->wiphy.dev); |
c3d34d5d | 614 | if (res) { |
aa5f66d5 | 615 | rtnl_unlock(); |
c3d34d5d JL |
616 | return res; |
617 | } | |
1f87f7d3 | 618 | |
2f0accc1 | 619 | /* set up regulatory info */ |
57b5ce07 | 620 | wiphy_regulatory_register(wiphy); |
2f0accc1 | 621 | |
5f2aa25e | 622 | list_add_rcu(&rdev->list, &cfg80211_rdev_list); |
f5ea9120 | 623 | cfg80211_rdev_list_generation++; |
704232c2 JB |
624 | |
625 | /* add to debugfs */ | |
79c97e97 JB |
626 | rdev->wiphy.debugfsdir = |
627 | debugfs_create_dir(wiphy_name(&rdev->wiphy), | |
704232c2 | 628 | ieee80211_debugfs_dir); |
79c97e97 JB |
629 | if (IS_ERR(rdev->wiphy.debugfsdir)) |
630 | rdev->wiphy.debugfsdir = NULL; | |
704232c2 | 631 | |
a2f73b6c | 632 | if (wiphy->regulatory_flags & REGULATORY_CUSTOM_REG) { |
73d54c9e LR |
633 | struct regulatory_request request; |
634 | ||
635 | request.wiphy_idx = get_wiphy_idx(wiphy); | |
636 | request.initiator = NL80211_REGDOM_SET_BY_DRIVER; | |
637 | request.alpha2[0] = '9'; | |
638 | request.alpha2[1] = '9'; | |
639 | ||
640 | nl80211_send_reg_change_event(&request); | |
641 | } | |
642 | ||
79c97e97 | 643 | cfg80211_debugfs_rdev_add(rdev); |
1ac61302 | 644 | |
ecb44335 SG |
645 | rdev->wiphy.registered = true; |
646 | rtnl_unlock(); | |
aa5f66d5 JB |
647 | |
648 | res = rfkill_register(rdev->rfkill); | |
649 | if (res) { | |
650 | rfkill_destroy(rdev->rfkill); | |
651 | rdev->rfkill = NULL; | |
652 | wiphy_unregister(&rdev->wiphy); | |
653 | return res; | |
654 | } | |
655 | ||
3bb20556 JB |
656 | nl80211_notify_wiphy(rdev, NL80211_CMD_NEW_WIPHY); |
657 | ||
2f0accc1 | 658 | return 0; |
704232c2 JB |
659 | } |
660 | EXPORT_SYMBOL(wiphy_register); | |
661 | ||
1f87f7d3 JB |
662 | void wiphy_rfkill_start_polling(struct wiphy *wiphy) |
663 | { | |
f26cbf40 | 664 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); |
1f87f7d3 | 665 | |
79c97e97 | 666 | if (!rdev->ops->rfkill_poll) |
1f87f7d3 | 667 | return; |
79c97e97 JB |
668 | rdev->rfkill_ops.poll = cfg80211_rfkill_poll; |
669 | rfkill_resume_polling(rdev->rfkill); | |
1f87f7d3 JB |
670 | } |
671 | EXPORT_SYMBOL(wiphy_rfkill_start_polling); | |
672 | ||
673 | void wiphy_rfkill_stop_polling(struct wiphy *wiphy) | |
674 | { | |
f26cbf40 | 675 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); |
1f87f7d3 | 676 | |
79c97e97 | 677 | rfkill_pause_polling(rdev->rfkill); |
1f87f7d3 JB |
678 | } |
679 | EXPORT_SYMBOL(wiphy_rfkill_stop_polling); | |
680 | ||
704232c2 JB |
681 | void wiphy_unregister(struct wiphy *wiphy) |
682 | { | |
f26cbf40 | 683 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); |
704232c2 | 684 | |
ad002395 JB |
685 | wait_event(rdev->dev_wait, ({ |
686 | int __count; | |
5fe231e8 | 687 | rtnl_lock(); |
ad002395 | 688 | __count = rdev->opencount; |
5fe231e8 | 689 | rtnl_unlock(); |
c4f60846 | 690 | __count == 0; })); |
ad002395 | 691 | |
aa5f66d5 JB |
692 | if (rdev->rfkill) |
693 | rfkill_unregister(rdev->rfkill); | |
256c90de | 694 | |
5fe231e8 | 695 | rtnl_lock(); |
3bb20556 | 696 | nl80211_notify_wiphy(rdev, NL80211_CMD_DEL_WIPHY); |
5fe231e8 JB |
697 | rdev->wiphy.registered = false; |
698 | ||
2fd05115 | 699 | WARN_ON(!list_empty(&rdev->wdev_list)); |
ad002395 JB |
700 | |
701 | /* | |
702 | * First remove the hardware from everywhere, this makes | |
703 | * it impossible to find from userspace. | |
704 | */ | |
7bcfaf2f | 705 | debugfs_remove_recursive(rdev->wiphy.debugfsdir); |
5f2aa25e JB |
706 | list_del_rcu(&rdev->list); |
707 | synchronize_rcu(); | |
f16bfc1c | 708 | |
bfead080 LR |
709 | /* |
710 | * If this device got a regulatory hint tell core its | |
711 | * free to listen now to a new shiny device regulatory hint | |
712 | */ | |
713 | wiphy_regulatory_deregister(wiphy); | |
3f2355cb | 714 | |
f5ea9120 | 715 | cfg80211_rdev_list_generation++; |
79c97e97 | 716 | device_del(&rdev->wiphy.dev); |
704232c2 | 717 | |
5fe231e8 | 718 | rtnl_unlock(); |
6682588a | 719 | |
36e6fea8 | 720 | flush_work(&rdev->scan_done_wk); |
6682588a | 721 | cancel_work_sync(&rdev->conn_work); |
6682588a | 722 | flush_work(&rdev->event_work); |
04f39047 | 723 | cancel_delayed_work_sync(&rdev->dfs_update_channels_wk); |
78f22b6a | 724 | flush_work(&rdev->destroy_work); |
6d52563f | 725 | |
6abb9cb9 JB |
726 | #ifdef CONFIG_PM |
727 | if (rdev->wiphy.wowlan_config && rdev->ops->set_wakeup) | |
e35e4d28 | 728 | rdev_set_wakeup(rdev, false); |
6abb9cb9 | 729 | #endif |
6d52563f | 730 | cfg80211_rdev_free_wowlan(rdev); |
be29b99a | 731 | cfg80211_rdev_free_coalesce(rdev); |
704232c2 JB |
732 | } |
733 | EXPORT_SYMBOL(wiphy_unregister); | |
734 | ||
79c97e97 | 735 | void cfg80211_dev_free(struct cfg80211_registered_device *rdev) |
704232c2 | 736 | { |
2a519311 | 737 | struct cfg80211_internal_bss *scan, *tmp; |
37c73b5f | 738 | struct cfg80211_beacon_registration *reg, *treg; |
79c97e97 | 739 | rfkill_destroy(rdev->rfkill); |
37c73b5f BG |
740 | list_for_each_entry_safe(reg, treg, &rdev->beacon_registrations, list) { |
741 | list_del(®->list); | |
742 | kfree(reg); | |
743 | } | |
79c97e97 | 744 | list_for_each_entry_safe(scan, tmp, &rdev->bss_list, list) |
5b112d3d | 745 | cfg80211_put_bss(&rdev->wiphy, &scan->pub); |
79c97e97 | 746 | kfree(rdev); |
704232c2 JB |
747 | } |
748 | ||
749 | void wiphy_free(struct wiphy *wiphy) | |
750 | { | |
751 | put_device(&wiphy->dev); | |
752 | } | |
753 | EXPORT_SYMBOL(wiphy_free); | |
754 | ||
1f87f7d3 JB |
755 | void wiphy_rfkill_set_hw_state(struct wiphy *wiphy, bool blocked) |
756 | { | |
f26cbf40 | 757 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); |
1f87f7d3 | 758 | |
79c97e97 JB |
759 | if (rfkill_set_hw_state(rdev->rfkill, blocked)) |
760 | schedule_work(&rdev->rfkill_sync); | |
1f87f7d3 JB |
761 | } |
762 | EXPORT_SYMBOL(wiphy_rfkill_set_hw_state); | |
763 | ||
98104fde JB |
764 | void cfg80211_unregister_wdev(struct wireless_dev *wdev) |
765 | { | |
f26cbf40 | 766 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); |
98104fde JB |
767 | |
768 | ASSERT_RTNL(); | |
769 | ||
770 | if (WARN_ON(wdev->netdev)) | |
771 | return; | |
772 | ||
98104fde JB |
773 | list_del_rcu(&wdev->list); |
774 | rdev->devlist_generation++; | |
775 | ||
776 | switch (wdev->iftype) { | |
777 | case NL80211_IFTYPE_P2P_DEVICE: | |
f9f47529 | 778 | cfg80211_stop_p2p_device(rdev, wdev); |
98104fde JB |
779 | break; |
780 | default: | |
781 | WARN_ON_ONCE(1); | |
782 | break; | |
783 | } | |
98104fde JB |
784 | } |
785 | EXPORT_SYMBOL(cfg80211_unregister_wdev); | |
786 | ||
f1e3d556 | 787 | static const struct device_type wiphy_type = { |
053a93dd MH |
788 | .name = "wlan", |
789 | }; | |
790 | ||
dbbae26a MK |
791 | void cfg80211_update_iface_num(struct cfg80211_registered_device *rdev, |
792 | enum nl80211_iftype iftype, int num) | |
793 | { | |
c5a7e582 | 794 | ASSERT_RTNL(); |
dbbae26a MK |
795 | |
796 | rdev->num_running_ifaces += num; | |
797 | if (iftype == NL80211_IFTYPE_MONITOR) | |
798 | rdev->num_running_monitor_ifaces += num; | |
dbbae26a MK |
799 | } |
800 | ||
f04c2203 MK |
801 | void __cfg80211_leave(struct cfg80211_registered_device *rdev, |
802 | struct wireless_dev *wdev) | |
81256969 SG |
803 | { |
804 | struct net_device *dev = wdev->netdev; | |
805 | ||
24d584d7 | 806 | ASSERT_RTNL(); |
f04c2203 | 807 | ASSERT_WDEV_LOCK(wdev); |
24d584d7 | 808 | |
81256969 SG |
809 | switch (wdev->iftype) { |
810 | case NL80211_IFTYPE_ADHOC: | |
f04c2203 | 811 | __cfg80211_leave_ibss(rdev, dev, true); |
81256969 SG |
812 | break; |
813 | case NL80211_IFTYPE_P2P_CLIENT: | |
814 | case NL80211_IFTYPE_STATION: | |
24d584d7 BB |
815 | if (rdev->sched_scan_req && dev == rdev->sched_scan_req->dev) |
816 | __cfg80211_stop_sched_scan(rdev, false); | |
81256969 | 817 | |
81256969 SG |
818 | #ifdef CONFIG_CFG80211_WEXT |
819 | kfree(wdev->wext.ie); | |
820 | wdev->wext.ie = NULL; | |
821 | wdev->wext.ie_len = 0; | |
822 | wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC; | |
823 | #endif | |
83739b03 JB |
824 | cfg80211_disconnect(rdev, dev, |
825 | WLAN_REASON_DEAUTH_LEAVING, true); | |
81256969 SG |
826 | break; |
827 | case NL80211_IFTYPE_MESH_POINT: | |
f04c2203 | 828 | __cfg80211_leave_mesh(rdev, dev); |
81256969 SG |
829 | break; |
830 | case NL80211_IFTYPE_AP: | |
74418ede | 831 | case NL80211_IFTYPE_P2P_GO: |
f04c2203 | 832 | __cfg80211_stop_ap(rdev, dev, true); |
81256969 SG |
833 | break; |
834 | default: | |
835 | break; | |
836 | } | |
81256969 SG |
837 | } |
838 | ||
f04c2203 MK |
839 | void cfg80211_leave(struct cfg80211_registered_device *rdev, |
840 | struct wireless_dev *wdev) | |
841 | { | |
842 | wdev_lock(wdev); | |
843 | __cfg80211_leave(rdev, wdev); | |
844 | wdev_unlock(wdev); | |
845 | } | |
846 | ||
847 | void cfg80211_stop_iface(struct wiphy *wiphy, struct wireless_dev *wdev, | |
848 | gfp_t gfp) | |
849 | { | |
850 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); | |
851 | struct cfg80211_event *ev; | |
852 | unsigned long flags; | |
853 | ||
854 | trace_cfg80211_stop_iface(wiphy, wdev); | |
855 | ||
856 | ev = kzalloc(sizeof(*ev), gfp); | |
857 | if (!ev) | |
858 | return; | |
859 | ||
860 | ev->type = EVENT_STOPPED; | |
861 | ||
862 | spin_lock_irqsave(&wdev->event_lock, flags); | |
863 | list_add_tail(&ev->list, &wdev->event_list); | |
864 | spin_unlock_irqrestore(&wdev->event_lock, flags); | |
865 | queue_work(cfg80211_wq, &rdev->event_work); | |
866 | } | |
867 | EXPORT_SYMBOL(cfg80211_stop_iface); | |
868 | ||
c4f60846 | 869 | static int cfg80211_netdev_notifier_call(struct notifier_block *nb, |
351638e7 | 870 | unsigned long state, void *ptr) |
704232c2 | 871 | { |
351638e7 | 872 | struct net_device *dev = netdev_notifier_info_to_dev(ptr); |
2a783c13 | 873 | struct wireless_dev *wdev = dev->ieee80211_ptr; |
704232c2 JB |
874 | struct cfg80211_registered_device *rdev; |
875 | ||
2a783c13 | 876 | if (!wdev) |
1f87f7d3 | 877 | return NOTIFY_DONE; |
704232c2 | 878 | |
f26cbf40 | 879 | rdev = wiphy_to_rdev(wdev->wiphy); |
704232c2 | 880 | |
2a783c13 | 881 | WARN_ON(wdev->iftype == NL80211_IFTYPE_UNSPECIFIED); |
60719ffd | 882 | |
704232c2 | 883 | switch (state) { |
053a93dd MH |
884 | case NETDEV_POST_INIT: |
885 | SET_NETDEV_DEVTYPE(dev, &wiphy_type); | |
886 | break; | |
704232c2 | 887 | case NETDEV_REGISTER: |
0ff6ce7b JB |
888 | /* |
889 | * NB: cannot take rdev->mtx here because this may be | |
890 | * called within code protected by it when interfaces | |
891 | * are added with nl80211. | |
892 | */ | |
667503dd JB |
893 | mutex_init(&wdev->mtx); |
894 | INIT_LIST_HEAD(&wdev->event_list); | |
895 | spin_lock_init(&wdev->event_lock); | |
2e161f78 JB |
896 | INIT_LIST_HEAD(&wdev->mgmt_registrations); |
897 | spin_lock_init(&wdev->mgmt_registrations_lock); | |
026331c4 | 898 | |
89a54e48 JB |
899 | wdev->identifier = ++rdev->wdev_id; |
900 | list_add_rcu(&wdev->list, &rdev->wdev_list); | |
f5ea9120 | 901 | rdev->devlist_generation++; |
463d0183 JB |
902 | /* can only change netns with wiphy */ |
903 | dev->features |= NETIF_F_NETNS_LOCAL; | |
904 | ||
704232c2 JB |
905 | if (sysfs_create_link(&dev->dev.kobj, &rdev->wiphy.dev.kobj, |
906 | "phy80211")) { | |
e9c0268f | 907 | pr_err("failed to add phy80211 symlink to netdev!\n"); |
704232c2 | 908 | } |
2a783c13 | 909 | wdev->netdev = dev; |
3d23e349 | 910 | #ifdef CONFIG_CFG80211_WEXT |
2a783c13 JB |
911 | wdev->wext.default_key = -1; |
912 | wdev->wext.default_mgmt_key = -1; | |
f2129354 | 913 | wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC; |
ffb9eb3d KV |
914 | #endif |
915 | ||
5be83de5 | 916 | if (wdev->wiphy->flags & WIPHY_FLAG_PS_ON_BY_DEFAULT) |
ffb9eb3d | 917 | wdev->ps = true; |
5be83de5 | 918 | else |
ffb9eb3d | 919 | wdev->ps = false; |
9043f3b8 JO |
920 | /* allow mac80211 to determine the timeout */ |
921 | wdev->ps_timeout = -1; | |
ffb9eb3d | 922 | |
ad4bb6f8 | 923 | if ((wdev->iftype == NL80211_IFTYPE_STATION || |
074ac8df | 924 | wdev->iftype == NL80211_IFTYPE_P2P_CLIENT || |
ad4bb6f8 JB |
925 | wdev->iftype == NL80211_IFTYPE_ADHOC) && !wdev->use_4addr) |
926 | dev->priv_flags |= IFF_DONT_BRIDGE; | |
704232c2 | 927 | break; |
04a773ad | 928 | case NETDEV_GOING_DOWN: |
81256969 | 929 | cfg80211_leave(rdev, wdev); |
01a0ac41 JB |
930 | break; |
931 | case NETDEV_DOWN: | |
dbbae26a | 932 | cfg80211_update_iface_num(rdev, wdev->iftype, -1); |
a617302c JB |
933 | if (rdev->scan_req && rdev->scan_req->wdev == wdev) { |
934 | if (WARN_ON(!rdev->scan_req->notified)) | |
935 | rdev->scan_req->aborted = true; | |
f9d15d16 | 936 | ___cfg80211_scan_done(rdev, false); |
a617302c | 937 | } |
5fe231e8 JB |
938 | |
939 | if (WARN_ON(rdev->sched_scan_req && | |
940 | rdev->sched_scan_req->dev == wdev->netdev)) { | |
941 | __cfg80211_stop_sched_scan(rdev, false); | |
942 | } | |
943 | ||
944 | rdev->opencount--; | |
945 | wake_up(&rdev->dev_wait); | |
04a773ad JB |
946 | break; |
947 | case NETDEV_UP: | |
4290cb4b | 948 | cfg80211_update_iface_num(rdev, wdev->iftype, 1); |
667503dd | 949 | wdev_lock(wdev); |
f2129354 | 950 | switch (wdev->iftype) { |
29cbe68c | 951 | #ifdef CONFIG_CFG80211_WEXT |
f2129354 | 952 | case NL80211_IFTYPE_ADHOC: |
fffd0934 | 953 | cfg80211_ibss_wext_join(rdev, wdev); |
04a773ad | 954 | break; |
f2129354 | 955 | case NL80211_IFTYPE_STATION: |
fffd0934 | 956 | cfg80211_mgd_wext_connect(rdev, wdev); |
f2129354 | 957 | break; |
29cbe68c | 958 | #endif |
c80d545d | 959 | #ifdef CONFIG_MAC80211_MESH |
29cbe68c | 960 | case NL80211_IFTYPE_MESH_POINT: |
c80d545d JC |
961 | { |
962 | /* backward compat code... */ | |
963 | struct mesh_setup setup; | |
964 | memcpy(&setup, &default_mesh_setup, | |
965 | sizeof(setup)); | |
966 | /* back compat only needed for mesh_id */ | |
967 | setup.mesh_id = wdev->ssid; | |
968 | setup.mesh_id_len = wdev->mesh_id_up_len; | |
969 | if (wdev->mesh_id_up_len) | |
970 | __cfg80211_join_mesh(rdev, dev, | |
971 | &setup, | |
972 | &default_mesh_config); | |
973 | break; | |
974 | } | |
975 | #endif | |
f2129354 | 976 | default: |
04a773ad | 977 | break; |
f2129354 | 978 | } |
667503dd | 979 | wdev_unlock(wdev); |
ad002395 | 980 | rdev->opencount++; |
bf6a0579 JO |
981 | |
982 | /* | |
983 | * Configure power management to the driver here so that its | |
984 | * correctly set also after interface type changes etc. | |
985 | */ | |
5966f2dd EP |
986 | if ((wdev->iftype == NL80211_IFTYPE_STATION || |
987 | wdev->iftype == NL80211_IFTYPE_P2P_CLIENT) && | |
bf6a0579 | 988 | rdev->ops->set_power_mgmt) |
e35e4d28 HG |
989 | if (rdev_set_power_mgmt(rdev, dev, wdev->ps, |
990 | wdev->ps_timeout)) { | |
bf6a0579 JO |
991 | /* assume this means it's off */ |
992 | wdev->ps = false; | |
993 | } | |
2a783c13 | 994 | break; |
704232c2 | 995 | case NETDEV_UNREGISTER: |
e40cbdac JB |
996 | /* |
997 | * It is possible to get NETDEV_UNREGISTER | |
998 | * multiple times. To detect that, check | |
999 | * that the interface is still on the list | |
1000 | * of registered interfaces, and only then | |
1001 | * remove and clean it up. | |
1002 | */ | |
2a783c13 | 1003 | if (!list_empty(&wdev->list)) { |
704232c2 | 1004 | sysfs_remove_link(&dev->dev.kobj, "phy80211"); |
5f2aa25e | 1005 | list_del_rcu(&wdev->list); |
f5ea9120 | 1006 | rdev->devlist_generation++; |
2e161f78 | 1007 | cfg80211_mlme_purge_registrations(wdev); |
3d23e349 | 1008 | #ifdef CONFIG_CFG80211_WEXT |
e40cbdac | 1009 | kfree(wdev->wext.keys); |
fffd0934 | 1010 | #endif |
e40cbdac | 1011 | } |
5f2aa25e JB |
1012 | /* |
1013 | * synchronise (so that we won't find this netdev | |
1014 | * from other code any more) and then clear the list | |
1015 | * head so that the above code can safely check for | |
1016 | * !list_empty() to avoid double-cleanup. | |
1017 | */ | |
1018 | synchronize_rcu(); | |
1019 | INIT_LIST_HEAD(&wdev->list); | |
1f6fc43e DD |
1020 | /* |
1021 | * Ensure that all events have been processed and | |
1022 | * freed. | |
1023 | */ | |
1024 | cfg80211_process_wdev_events(wdev); | |
f9bef3df BG |
1025 | |
1026 | if (WARN_ON(wdev->current_bss)) { | |
1027 | cfg80211_unhold_bss(wdev->current_bss); | |
1028 | cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub); | |
1029 | wdev->current_bss = NULL; | |
1030 | } | |
704232c2 | 1031 | break; |
1f87f7d3 | 1032 | case NETDEV_PRE_UP: |
0b20633d JB |
1033 | if (!(wdev->wiphy->interface_modes & BIT(wdev->iftype))) |
1034 | return notifier_from_errno(-EOPNOTSUPP); | |
b6a55015 LC |
1035 | if (rfkill_blocked(rdev->rfkill)) |
1036 | return notifier_from_errno(-ERFKILL); | |
1f87f7d3 | 1037 | break; |
6784c7db ZG |
1038 | default: |
1039 | return NOTIFY_DONE; | |
704232c2 JB |
1040 | } |
1041 | ||
6784c7db | 1042 | return NOTIFY_OK; |
704232c2 JB |
1043 | } |
1044 | ||
1045 | static struct notifier_block cfg80211_netdev_notifier = { | |
1046 | .notifier_call = cfg80211_netdev_notifier_call, | |
1047 | }; | |
1048 | ||
463d0183 JB |
1049 | static void __net_exit cfg80211_pernet_exit(struct net *net) |
1050 | { | |
1051 | struct cfg80211_registered_device *rdev; | |
1052 | ||
1053 | rtnl_lock(); | |
463d0183 JB |
1054 | list_for_each_entry(rdev, &cfg80211_rdev_list, list) { |
1055 | if (net_eq(wiphy_net(&rdev->wiphy), net)) | |
1056 | WARN_ON(cfg80211_switch_netns(rdev, &init_net)); | |
1057 | } | |
463d0183 JB |
1058 | rtnl_unlock(); |
1059 | } | |
1060 | ||
1061 | static struct pernet_operations cfg80211_pernet_ops = { | |
1062 | .exit = cfg80211_pernet_exit, | |
1063 | }; | |
1064 | ||
1065 | static int __init cfg80211_init(void) | |
704232c2 | 1066 | { |
b2e1b302 LR |
1067 | int err; |
1068 | ||
463d0183 JB |
1069 | err = register_pernet_device(&cfg80211_pernet_ops); |
1070 | if (err) | |
1071 | goto out_fail_pernet; | |
1072 | ||
b2e1b302 | 1073 | err = wiphy_sysfs_init(); |
704232c2 JB |
1074 | if (err) |
1075 | goto out_fail_sysfs; | |
1076 | ||
1077 | err = register_netdevice_notifier(&cfg80211_netdev_notifier); | |
1078 | if (err) | |
1079 | goto out_fail_notifier; | |
1080 | ||
55682965 JB |
1081 | err = nl80211_init(); |
1082 | if (err) | |
1083 | goto out_fail_nl80211; | |
1084 | ||
704232c2 JB |
1085 | ieee80211_debugfs_dir = debugfs_create_dir("ieee80211", NULL); |
1086 | ||
b2e1b302 LR |
1087 | err = regulatory_init(); |
1088 | if (err) | |
1089 | goto out_fail_reg; | |
1090 | ||
e60d7443 | 1091 | cfg80211_wq = create_singlethread_workqueue("cfg80211"); |
f00f188f WY |
1092 | if (!cfg80211_wq) { |
1093 | err = -ENOMEM; | |
e60d7443 | 1094 | goto out_fail_wq; |
f00f188f | 1095 | } |
e60d7443 | 1096 | |
704232c2 JB |
1097 | return 0; |
1098 | ||
e60d7443 AB |
1099 | out_fail_wq: |
1100 | regulatory_exit(); | |
b2e1b302 LR |
1101 | out_fail_reg: |
1102 | debugfs_remove(ieee80211_debugfs_dir); | |
55682965 JB |
1103 | out_fail_nl80211: |
1104 | unregister_netdevice_notifier(&cfg80211_netdev_notifier); | |
704232c2 JB |
1105 | out_fail_notifier: |
1106 | wiphy_sysfs_exit(); | |
1107 | out_fail_sysfs: | |
463d0183 JB |
1108 | unregister_pernet_device(&cfg80211_pernet_ops); |
1109 | out_fail_pernet: | |
704232c2 JB |
1110 | return err; |
1111 | } | |
3a462465 | 1112 | subsys_initcall(cfg80211_init); |
704232c2 | 1113 | |
f884e387 | 1114 | static void __exit cfg80211_exit(void) |
704232c2 JB |
1115 | { |
1116 | debugfs_remove(ieee80211_debugfs_dir); | |
55682965 | 1117 | nl80211_exit(); |
704232c2 JB |
1118 | unregister_netdevice_notifier(&cfg80211_netdev_notifier); |
1119 | wiphy_sysfs_exit(); | |
b2e1b302 | 1120 | regulatory_exit(); |
463d0183 | 1121 | unregister_pernet_device(&cfg80211_pernet_ops); |
e60d7443 | 1122 | destroy_workqueue(cfg80211_wq); |
704232c2 JB |
1123 | } |
1124 | module_exit(cfg80211_exit); |