Commit | Line | Data |
---|---|---|
704232c2 JB |
1 | /* |
2 | * This is the linux wireless configuration interface. | |
3 | * | |
5f2aa25e | 4 | * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net> |
2740f0cf | 5 | * Copyright 2013-2014 Intel Mobile Communications GmbH |
53873f13 | 6 | * Copyright 2015 Intel Deutschland GmbH |
704232c2 JB |
7 | */ |
8 | ||
e9c0268f JP |
9 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
10 | ||
704232c2 JB |
11 | #include <linux/if.h> |
12 | #include <linux/module.h> | |
13 | #include <linux/err.h> | |
704232c2 | 14 | #include <linux/list.h> |
5a0e3ad6 | 15 | #include <linux/slab.h> |
704232c2 JB |
16 | #include <linux/nl80211.h> |
17 | #include <linux/debugfs.h> | |
18 | #include <linux/notifier.h> | |
19 | #include <linux/device.h> | |
16a832e7 | 20 | #include <linux/etherdevice.h> |
1f87f7d3 | 21 | #include <linux/rtnetlink.h> |
d43c36dc | 22 | #include <linux/sched.h> |
704232c2 JB |
23 | #include <net/genetlink.h> |
24 | #include <net/cfg80211.h> | |
55682965 | 25 | #include "nl80211.h" |
704232c2 JB |
26 | #include "core.h" |
27 | #include "sysfs.h" | |
1ac61302 | 28 | #include "debugfs.h" |
a9a11622 | 29 | #include "wext-compat.h" |
e35e4d28 | 30 | #include "rdev-ops.h" |
704232c2 JB |
31 | |
32 | /* name for sysfs, %d is appended */ | |
33 | #define PHY_NAME "phy" | |
34 | ||
35 | MODULE_AUTHOR("Johannes Berg"); | |
36 | MODULE_LICENSE("GPL"); | |
37 | MODULE_DESCRIPTION("wireless configuration support"); | |
fb4e1568 | 38 | MODULE_ALIAS_GENL_FAMILY(NL80211_GENL_NAME); |
704232c2 | 39 | |
5fe231e8 | 40 | /* RCU-protected (and RTNL for writers) */ |
79c97e97 | 41 | LIST_HEAD(cfg80211_rdev_list); |
f5ea9120 | 42 | int cfg80211_rdev_list_generation; |
a1794390 | 43 | |
704232c2 JB |
44 | /* for debugfs */ |
45 | static struct dentry *ieee80211_debugfs_dir; | |
46 | ||
e60d7443 AB |
47 | /* for the cleanup, scan and event works */ |
48 | struct workqueue_struct *cfg80211_wq; | |
49 | ||
40db6c77 AK |
50 | static bool cfg80211_disable_40mhz_24ghz; |
51 | module_param(cfg80211_disable_40mhz_24ghz, bool, 0644); | |
52 | MODULE_PARM_DESC(cfg80211_disable_40mhz_24ghz, | |
53 | "Disable 40MHz support in the 2.4GHz band"); | |
54 | ||
79c97e97 | 55 | struct cfg80211_registered_device *cfg80211_rdev_by_wiphy_idx(int wiphy_idx) |
55682965 | 56 | { |
79c97e97 | 57 | struct cfg80211_registered_device *result = NULL, *rdev; |
55682965 | 58 | |
5fe231e8 | 59 | ASSERT_RTNL(); |
761cf7ec | 60 | |
79c97e97 JB |
61 | list_for_each_entry(rdev, &cfg80211_rdev_list, list) { |
62 | if (rdev->wiphy_idx == wiphy_idx) { | |
63 | result = rdev; | |
55682965 JB |
64 | break; |
65 | } | |
66 | } | |
67 | ||
68 | return result; | |
69 | } | |
70 | ||
806a9e39 LR |
71 | int get_wiphy_idx(struct wiphy *wiphy) |
72 | { | |
f26cbf40 | 73 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); |
f4173766 | 74 | |
79c97e97 | 75 | return rdev->wiphy_idx; |
806a9e39 LR |
76 | } |
77 | ||
806a9e39 LR |
78 | struct wiphy *wiphy_idx_to_wiphy(int wiphy_idx) |
79 | { | |
79c97e97 | 80 | struct cfg80211_registered_device *rdev; |
806a9e39 | 81 | |
5fe231e8 | 82 | ASSERT_RTNL(); |
806a9e39 | 83 | |
79c97e97 JB |
84 | rdev = cfg80211_rdev_by_wiphy_idx(wiphy_idx); |
85 | if (!rdev) | |
806a9e39 | 86 | return NULL; |
79c97e97 | 87 | return &rdev->wiphy; |
806a9e39 LR |
88 | } |
89 | ||
1998d90a BG |
90 | static int cfg80211_dev_check_name(struct cfg80211_registered_device *rdev, |
91 | const char *newname) | |
55682965 | 92 | { |
79c97e97 | 93 | struct cfg80211_registered_device *rdev2; |
1998d90a | 94 | int wiphy_idx, taken = -1, digits; |
55682965 | 95 | |
5fe231e8 | 96 | ASSERT_RTNL(); |
2940bb69 | 97 | |
7623225f JB |
98 | /* prohibit calling the thing phy%d when %d is not its number */ |
99 | sscanf(newname, PHY_NAME "%d%n", &wiphy_idx, &taken); | |
100 | if (taken == strlen(newname) && wiphy_idx != rdev->wiphy_idx) { | |
101 | /* count number of places needed to print wiphy_idx */ | |
102 | digits = 1; | |
103 | while (wiphy_idx /= 10) | |
104 | digits++; | |
105 | /* | |
106 | * deny the name if it is phy<idx> where <idx> is printed | |
107 | * without leading zeroes. taken == strlen(newname) here | |
108 | */ | |
109 | if (taken == strlen(PHY_NAME) + digits) | |
110 | return -EINVAL; | |
111 | } | |
112 | ||
1998d90a BG |
113 | /* Ensure another device does not already have this name. */ |
114 | list_for_each_entry(rdev2, &cfg80211_rdev_list, list) | |
115 | if (strcmp(newname, wiphy_name(&rdev2->wiphy)) == 0) | |
116 | return -EINVAL; | |
117 | ||
118 | return 0; | |
119 | } | |
120 | ||
121 | int cfg80211_dev_rename(struct cfg80211_registered_device *rdev, | |
122 | char *newname) | |
123 | { | |
124 | int result; | |
125 | ||
126 | ASSERT_RTNL(); | |
7623225f | 127 | |
2940bb69 | 128 | /* Ignore nop renames */ |
1998d90a | 129 | if (strcmp(newname, wiphy_name(&rdev->wiphy)) == 0) |
4bbf4d56 | 130 | return 0; |
2940bb69 | 131 | |
1998d90a BG |
132 | result = cfg80211_dev_check_name(rdev, newname); |
133 | if (result < 0) | |
134 | return result; | |
55682965 | 135 | |
55682965 JB |
136 | result = device_rename(&rdev->wiphy.dev, newname); |
137 | if (result) | |
4bbf4d56 | 138 | return result; |
55682965 | 139 | |
33c0360b JB |
140 | if (rdev->wiphy.debugfsdir && |
141 | !debugfs_rename(rdev->wiphy.debugfsdir->d_parent, | |
55682965 JB |
142 | rdev->wiphy.debugfsdir, |
143 | rdev->wiphy.debugfsdir->d_parent, | |
144 | newname)) | |
e9c0268f | 145 | pr_err("failed to rename debugfs dir to %s!\n", newname); |
55682965 | 146 | |
3bb20556 | 147 | nl80211_notify_wiphy(rdev, NL80211_CMD_NEW_WIPHY); |
55682965 | 148 | |
4bbf4d56 | 149 | return 0; |
55682965 JB |
150 | } |
151 | ||
463d0183 JB |
152 | int cfg80211_switch_netns(struct cfg80211_registered_device *rdev, |
153 | struct net *net) | |
154 | { | |
155 | struct wireless_dev *wdev; | |
156 | int err = 0; | |
157 | ||
5be83de5 | 158 | if (!(rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK)) |
463d0183 JB |
159 | return -EOPNOTSUPP; |
160 | ||
53873f13 | 161 | list_for_each_entry(wdev, &rdev->wiphy.wdev_list, 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, "wlan%d"); | |
166 | if (err) | |
167 | break; | |
168 | wdev->netdev->features |= NETIF_F_NETNS_LOCAL; | |
169 | } | |
170 | ||
171 | if (err) { | |
172 | /* failed -- clean up to old netns */ | |
173 | net = wiphy_net(&rdev->wiphy); | |
174 | ||
53873f13 JB |
175 | list_for_each_entry_continue_reverse(wdev, |
176 | &rdev->wiphy.wdev_list, | |
463d0183 | 177 | list) { |
ba22fb5b JB |
178 | if (!wdev->netdev) |
179 | continue; | |
463d0183 JB |
180 | wdev->netdev->features &= ~NETIF_F_NETNS_LOCAL; |
181 | err = dev_change_net_namespace(wdev->netdev, net, | |
182 | "wlan%d"); | |
183 | WARN_ON(err); | |
184 | wdev->netdev->features |= NETIF_F_NETNS_LOCAL; | |
185 | } | |
04600794 JB |
186 | |
187 | return err; | |
463d0183 JB |
188 | } |
189 | ||
190 | wiphy_net_set(&rdev->wiphy, net); | |
191 | ||
04600794 JB |
192 | err = device_rename(&rdev->wiphy.dev, dev_name(&rdev->wiphy.dev)); |
193 | WARN_ON(err); | |
194 | ||
195 | return 0; | |
463d0183 JB |
196 | } |
197 | ||
1f87f7d3 JB |
198 | static void cfg80211_rfkill_poll(struct rfkill *rfkill, void *data) |
199 | { | |
79c97e97 | 200 | struct cfg80211_registered_device *rdev = data; |
1f87f7d3 | 201 | |
e35e4d28 | 202 | rdev_rfkill_poll(rdev); |
1f87f7d3 JB |
203 | } |
204 | ||
f9f47529 JB |
205 | void cfg80211_stop_p2p_device(struct cfg80211_registered_device *rdev, |
206 | struct wireless_dev *wdev) | |
207 | { | |
5fe231e8 | 208 | ASSERT_RTNL(); |
f9f47529 JB |
209 | |
210 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)) | |
211 | return; | |
212 | ||
213 | if (!wdev->p2p_started) | |
214 | return; | |
215 | ||
216 | rdev_stop_p2p_device(rdev, wdev); | |
217 | wdev->p2p_started = false; | |
218 | ||
219 | rdev->opencount--; | |
220 | ||
a617302c JB |
221 | if (rdev->scan_req && rdev->scan_req->wdev == wdev) { |
222 | if (WARN_ON(!rdev->scan_req->notified)) | |
1d76250b | 223 | rdev->scan_req->info.aborted = true; |
f9d15d16 | 224 | ___cfg80211_scan_done(rdev, false); |
a617302c | 225 | } |
f9f47529 JB |
226 | } |
227 | ||
f6837ba8 | 228 | void cfg80211_shutdown_all_interfaces(struct wiphy *wiphy) |
1f87f7d3 | 229 | { |
f6837ba8 | 230 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); |
1f87f7d3 JB |
231 | struct wireless_dev *wdev; |
232 | ||
f6837ba8 | 233 | ASSERT_RTNL(); |
f9f47529 | 234 | |
53873f13 | 235 | list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) { |
98104fde | 236 | if (wdev->netdev) { |
ba22fb5b | 237 | dev_close(wdev->netdev); |
98104fde JB |
238 | continue; |
239 | } | |
240 | /* otherwise, check iftype */ | |
241 | switch (wdev->iftype) { | |
242 | case NL80211_IFTYPE_P2P_DEVICE: | |
f9f47529 | 243 | cfg80211_stop_p2p_device(rdev, wdev); |
98104fde JB |
244 | break; |
245 | default: | |
246 | break; | |
247 | } | |
248 | } | |
f6837ba8 JB |
249 | } |
250 | EXPORT_SYMBOL_GPL(cfg80211_shutdown_all_interfaces); | |
1f87f7d3 | 251 | |
f6837ba8 JB |
252 | static int cfg80211_rfkill_set_block(void *data, bool blocked) |
253 | { | |
254 | struct cfg80211_registered_device *rdev = data; | |
255 | ||
256 | if (!blocked) | |
257 | return 0; | |
258 | ||
259 | rtnl_lock(); | |
260 | cfg80211_shutdown_all_interfaces(&rdev->wiphy); | |
1f87f7d3 JB |
261 | rtnl_unlock(); |
262 | ||
263 | return 0; | |
264 | } | |
265 | ||
266 | static void cfg80211_rfkill_sync_work(struct work_struct *work) | |
267 | { | |
79c97e97 | 268 | struct cfg80211_registered_device *rdev; |
1f87f7d3 | 269 | |
79c97e97 JB |
270 | rdev = container_of(work, struct cfg80211_registered_device, rfkill_sync); |
271 | cfg80211_rfkill_set_block(rdev, rfkill_blocked(rdev->rfkill)); | |
1f87f7d3 JB |
272 | } |
273 | ||
667503dd JB |
274 | static void cfg80211_event_work(struct work_struct *work) |
275 | { | |
276 | struct cfg80211_registered_device *rdev; | |
667503dd JB |
277 | |
278 | rdev = container_of(work, struct cfg80211_registered_device, | |
279 | event_work); | |
280 | ||
281 | rtnl_lock(); | |
3d54d255 | 282 | cfg80211_process_rdev_events(rdev); |
667503dd JB |
283 | rtnl_unlock(); |
284 | } | |
285 | ||
78f22b6a JB |
286 | void cfg80211_destroy_ifaces(struct cfg80211_registered_device *rdev) |
287 | { | |
288 | struct cfg80211_iface_destroy *item; | |
289 | ||
290 | ASSERT_RTNL(); | |
291 | ||
292 | spin_lock_irq(&rdev->destroy_list_lock); | |
293 | while ((item = list_first_entry_or_null(&rdev->destroy_list, | |
294 | struct cfg80211_iface_destroy, | |
295 | list))) { | |
296 | struct wireless_dev *wdev, *tmp; | |
297 | u32 nlportid = item->nlportid; | |
298 | ||
299 | list_del(&item->list); | |
300 | kfree(item); | |
301 | spin_unlock_irq(&rdev->destroy_list_lock); | |
302 | ||
53873f13 JB |
303 | list_for_each_entry_safe(wdev, tmp, |
304 | &rdev->wiphy.wdev_list, list) { | |
78f22b6a JB |
305 | if (nlportid == wdev->owner_nlportid) |
306 | rdev_del_virtual_intf(rdev, wdev); | |
307 | } | |
308 | ||
309 | spin_lock_irq(&rdev->destroy_list_lock); | |
310 | } | |
311 | spin_unlock_irq(&rdev->destroy_list_lock); | |
312 | } | |
313 | ||
314 | static void cfg80211_destroy_iface_wk(struct work_struct *work) | |
315 | { | |
316 | struct cfg80211_registered_device *rdev; | |
317 | ||
318 | rdev = container_of(work, struct cfg80211_registered_device, | |
319 | destroy_work); | |
320 | ||
321 | rtnl_lock(); | |
322 | cfg80211_destroy_ifaces(rdev); | |
323 | rtnl_unlock(); | |
324 | } | |
325 | ||
93a1e86c JR |
326 | static void cfg80211_sched_scan_stop_wk(struct work_struct *work) |
327 | { | |
328 | struct cfg80211_registered_device *rdev; | |
329 | ||
330 | rdev = container_of(work, struct cfg80211_registered_device, | |
331 | sched_scan_stop_wk); | |
332 | ||
333 | rtnl_lock(); | |
334 | ||
335 | __cfg80211_stop_sched_scan(rdev, false); | |
336 | ||
337 | rtnl_unlock(); | |
338 | } | |
339 | ||
704232c2 JB |
340 | /* exported functions */ |
341 | ||
1998d90a BG |
342 | struct wiphy *wiphy_new_nm(const struct cfg80211_ops *ops, int sizeof_priv, |
343 | const char *requested_name) | |
704232c2 | 344 | { |
73810b77 | 345 | static atomic_t wiphy_counter = ATOMIC_INIT(0); |
7623225f JB |
346 | |
347 | struct cfg80211_registered_device *rdev; | |
704232c2 JB |
348 | int alloc_size; |
349 | ||
0b20633d JB |
350 | WARN_ON(ops->add_key && (!ops->del_key || !ops->set_default_key)); |
351 | WARN_ON(ops->auth && (!ops->assoc || !ops->deauth || !ops->disassoc)); | |
352 | WARN_ON(ops->connect && !ops->disconnect); | |
353 | WARN_ON(ops->join_ibss && !ops->leave_ibss); | |
354 | WARN_ON(ops->add_virtual_intf && !ops->del_virtual_intf); | |
355 | WARN_ON(ops->add_station && !ops->del_station); | |
356 | WARN_ON(ops->add_mpath && !ops->del_mpath); | |
29cbe68c | 357 | WARN_ON(ops->join_mesh && !ops->leave_mesh); |
de3bb771 OO |
358 | WARN_ON(ops->start_p2p_device && !ops->stop_p2p_device); |
359 | WARN_ON(ops->start_ap && !ops->stop_ap); | |
360 | WARN_ON(ops->join_ocb && !ops->leave_ocb); | |
361 | WARN_ON(ops->suspend && !ops->resume); | |
362 | WARN_ON(ops->sched_scan_start && !ops->sched_scan_stop); | |
363 | WARN_ON(ops->remain_on_channel && !ops->cancel_remain_on_channel); | |
364 | WARN_ON(ops->tdls_channel_switch && !ops->tdls_cancel_channel_switch); | |
365 | WARN_ON(ops->add_tx_ts && !ops->del_tx_ts); | |
41ade00f | 366 | |
79c97e97 | 367 | alloc_size = sizeof(*rdev) + sizeof_priv; |
704232c2 | 368 | |
79c97e97 JB |
369 | rdev = kzalloc(alloc_size, GFP_KERNEL); |
370 | if (!rdev) | |
704232c2 JB |
371 | return NULL; |
372 | ||
79c97e97 | 373 | rdev->ops = ops; |
704232c2 | 374 | |
73810b77 | 375 | rdev->wiphy_idx = atomic_inc_return(&wiphy_counter); |
a4d73ee1 | 376 | |
f4173766 | 377 | if (unlikely(rdev->wiphy_idx < 0)) { |
7623225f | 378 | /* ugh, wrapped! */ |
73810b77 | 379 | atomic_dec(&wiphy_counter); |
79c97e97 | 380 | kfree(rdev); |
704232c2 JB |
381 | return NULL; |
382 | } | |
704232c2 | 383 | |
9b881963 JB |
384 | /* atomic_inc_return makes it start at 1, make it start at 0 */ |
385 | rdev->wiphy_idx--; | |
386 | ||
7623225f | 387 | /* give it a proper name */ |
1998d90a BG |
388 | if (requested_name && requested_name[0]) { |
389 | int rv; | |
390 | ||
391 | rtnl_lock(); | |
392 | rv = cfg80211_dev_check_name(rdev, requested_name); | |
393 | ||
394 | if (rv < 0) { | |
395 | rtnl_unlock(); | |
396 | goto use_default_name; | |
397 | } | |
398 | ||
399 | rv = dev_set_name(&rdev->wiphy.dev, "%s", requested_name); | |
400 | rtnl_unlock(); | |
401 | if (rv) | |
402 | goto use_default_name; | |
403 | } else { | |
404 | use_default_name: | |
405 | /* NOTE: This is *probably* safe w/out holding rtnl because of | |
406 | * the restrictions on phy names. Probably this call could | |
407 | * fail if some other part of the kernel (re)named a device | |
408 | * phyX. But, might should add some locking and check return | |
409 | * value, and use a different name if this one exists? | |
410 | */ | |
411 | dev_set_name(&rdev->wiphy.dev, PHY_NAME "%d", rdev->wiphy_idx); | |
412 | } | |
7623225f | 413 | |
53873f13 | 414 | INIT_LIST_HEAD(&rdev->wiphy.wdev_list); |
37c73b5f BG |
415 | INIT_LIST_HEAD(&rdev->beacon_registrations); |
416 | spin_lock_init(&rdev->beacon_registrations_lock); | |
79c97e97 JB |
417 | spin_lock_init(&rdev->bss_lock); |
418 | INIT_LIST_HEAD(&rdev->bss_list); | |
419 | INIT_WORK(&rdev->scan_done_wk, __cfg80211_scan_done); | |
807f8a8c | 420 | INIT_WORK(&rdev->sched_scan_results_wk, __cfg80211_sched_scan_results); |
33d8783c JB |
421 | INIT_LIST_HEAD(&rdev->mlme_unreg); |
422 | spin_lock_init(&rdev->mlme_unreg_lock); | |
423 | INIT_WORK(&rdev->mlme_unreg_wk, cfg80211_mlme_unreg_wk); | |
04f39047 SW |
424 | INIT_DELAYED_WORK(&rdev->dfs_update_channels_wk, |
425 | cfg80211_dfs_channels_update_work); | |
3d23e349 JB |
426 | #ifdef CONFIG_CFG80211_WEXT |
427 | rdev->wiphy.wext = &cfg80211_wext_handler; | |
428 | #endif | |
429 | ||
79c97e97 JB |
430 | device_initialize(&rdev->wiphy.dev); |
431 | rdev->wiphy.dev.class = &ieee80211_class; | |
432 | rdev->wiphy.dev.platform_data = rdev; | |
9f0e1354 | 433 | device_enable_async_suspend(&rdev->wiphy.dev); |
79c97e97 | 434 | |
78f22b6a JB |
435 | INIT_LIST_HEAD(&rdev->destroy_list); |
436 | spin_lock_init(&rdev->destroy_list_lock); | |
437 | INIT_WORK(&rdev->destroy_work, cfg80211_destroy_iface_wk); | |
93a1e86c | 438 | INIT_WORK(&rdev->sched_scan_stop_wk, cfg80211_sched_scan_stop_wk); |
78f22b6a | 439 | |
5be83de5 JB |
440 | #ifdef CONFIG_CFG80211_DEFAULT_PS |
441 | rdev->wiphy.flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT; | |
442 | #endif | |
16cb9d42 | 443 | |
463d0183 JB |
444 | wiphy_net_set(&rdev->wiphy, &init_net); |
445 | ||
79c97e97 JB |
446 | rdev->rfkill_ops.set_block = cfg80211_rfkill_set_block; |
447 | rdev->rfkill = rfkill_alloc(dev_name(&rdev->wiphy.dev), | |
448 | &rdev->wiphy.dev, RFKILL_TYPE_WLAN, | |
449 | &rdev->rfkill_ops, rdev); | |
450 | ||
451 | if (!rdev->rfkill) { | |
452 | kfree(rdev); | |
1f87f7d3 JB |
453 | return NULL; |
454 | } | |
455 | ||
79c97e97 JB |
456 | INIT_WORK(&rdev->rfkill_sync, cfg80211_rfkill_sync_work); |
457 | INIT_WORK(&rdev->conn_work, cfg80211_conn_work); | |
458 | INIT_WORK(&rdev->event_work, cfg80211_event_work); | |
1f87f7d3 | 459 | |
ad002395 JB |
460 | init_waitqueue_head(&rdev->dev_wait); |
461 | ||
b9a5f8ca JM |
462 | /* |
463 | * Initialize wiphy parameters to IEEE 802.11 MIB default values. | |
464 | * Fragmentation and RTS threshold are disabled by default with the | |
465 | * special -1 value. | |
466 | */ | |
79c97e97 JB |
467 | rdev->wiphy.retry_short = 7; |
468 | rdev->wiphy.retry_long = 4; | |
469 | rdev->wiphy.frag_threshold = (u32) -1; | |
470 | rdev->wiphy.rts_threshold = (u32) -1; | |
81077e82 | 471 | rdev->wiphy.coverage_class = 0; |
b9a5f8ca | 472 | |
9a774c78 AO |
473 | rdev->wiphy.max_num_csa_counters = 1; |
474 | ||
3b06d277 AS |
475 | rdev->wiphy.max_sched_scan_plans = 1; |
476 | rdev->wiphy.max_sched_scan_plan_interval = U32_MAX; | |
477 | ||
79c97e97 | 478 | return &rdev->wiphy; |
704232c2 | 479 | } |
1998d90a | 480 | EXPORT_SYMBOL(wiphy_new_nm); |
704232c2 | 481 | |
7527a782 JB |
482 | static int wiphy_verify_combinations(struct wiphy *wiphy) |
483 | { | |
484 | const struct ieee80211_iface_combination *c; | |
485 | int i, j; | |
486 | ||
7527a782 JB |
487 | for (i = 0; i < wiphy->n_iface_combinations; i++) { |
488 | u32 cnt = 0; | |
489 | u16 all_iftypes = 0; | |
490 | ||
491 | c = &wiphy->iface_combinations[i]; | |
492 | ||
11c4a075 SW |
493 | /* |
494 | * Combinations with just one interface aren't real, | |
495 | * however we make an exception for DFS. | |
496 | */ | |
497 | if (WARN_ON((c->max_interfaces < 2) && !c->radar_detect_widths)) | |
7527a782 JB |
498 | return -EINVAL; |
499 | ||
500 | /* Need at least one channel */ | |
501 | if (WARN_ON(!c->num_different_channels)) | |
502 | return -EINVAL; | |
503 | ||
d4e50c59 MK |
504 | /* |
505 | * Put a sane limit on maximum number of different | |
506 | * channels to simplify channel accounting code. | |
507 | */ | |
508 | if (WARN_ON(c->num_different_channels > | |
509 | CFG80211_MAX_NUM_DIFFERENT_CHANNELS)) | |
510 | return -EINVAL; | |
511 | ||
11c4a075 SW |
512 | /* DFS only works on one channel. */ |
513 | if (WARN_ON(c->radar_detect_widths && | |
514 | (c->num_different_channels > 1))) | |
515 | return -EINVAL; | |
516 | ||
7527a782 JB |
517 | if (WARN_ON(!c->n_limits)) |
518 | return -EINVAL; | |
519 | ||
520 | for (j = 0; j < c->n_limits; j++) { | |
521 | u16 types = c->limits[j].types; | |
522 | ||
b6a55015 | 523 | /* interface types shouldn't overlap */ |
7527a782 JB |
524 | if (WARN_ON(types & all_iftypes)) |
525 | return -EINVAL; | |
526 | all_iftypes |= types; | |
527 | ||
528 | if (WARN_ON(!c->limits[j].max)) | |
529 | return -EINVAL; | |
530 | ||
531 | /* Shouldn't list software iftypes in combinations! */ | |
532 | if (WARN_ON(wiphy->software_iftypes & types)) | |
533 | return -EINVAL; | |
534 | ||
98104fde JB |
535 | /* Only a single P2P_DEVICE can be allowed */ |
536 | if (WARN_ON(types & BIT(NL80211_IFTYPE_P2P_DEVICE) && | |
537 | c->limits[j].max > 1)) | |
538 | return -EINVAL; | |
539 | ||
7527a782 JB |
540 | cnt += c->limits[j].max; |
541 | /* | |
542 | * Don't advertise an unsupported type | |
543 | * in a combination. | |
544 | */ | |
545 | if (WARN_ON((wiphy->interface_modes & types) != types)) | |
546 | return -EINVAL; | |
547 | } | |
548 | ||
549 | /* You can't even choose that many! */ | |
550 | if (WARN_ON(cnt < c->max_interfaces)) | |
551 | return -EINVAL; | |
552 | } | |
553 | ||
554 | return 0; | |
555 | } | |
556 | ||
704232c2 JB |
557 | int wiphy_register(struct wiphy *wiphy) |
558 | { | |
f26cbf40 | 559 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); |
704232c2 | 560 | int res; |
57fbcce3 | 561 | enum nl80211_band band; |
8318d78a JB |
562 | struct ieee80211_supported_band *sband; |
563 | bool have_band = false; | |
564 | int i; | |
f59ac048 LR |
565 | u16 ifmodes = wiphy->interface_modes; |
566 | ||
dfb89c56 | 567 | #ifdef CONFIG_PM |
964dc9e2 JB |
568 | if (WARN_ON(wiphy->wowlan && |
569 | (wiphy->wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) && | |
570 | !(wiphy->wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY))) | |
571 | return -EINVAL; | |
572 | if (WARN_ON(wiphy->wowlan && | |
573 | !wiphy->wowlan->flags && !wiphy->wowlan->n_patterns && | |
574 | !wiphy->wowlan->tcp)) | |
77dbbb13 | 575 | return -EINVAL; |
dfb89c56 | 576 | #endif |
1057d35e AN |
577 | if (WARN_ON((wiphy->features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH) && |
578 | (!rdev->ops->tdls_channel_switch || | |
579 | !rdev->ops->tdls_cancel_channel_switch))) | |
580 | return -EINVAL; | |
77dbbb13 | 581 | |
ad932f04 AN |
582 | /* |
583 | * if a wiphy has unsupported modes for regulatory channel enforcement, | |
584 | * opt-out of enforcement checking | |
585 | */ | |
586 | if (wiphy->interface_modes & ~(BIT(NL80211_IFTYPE_STATION) | | |
587 | BIT(NL80211_IFTYPE_P2P_CLIENT) | | |
588 | BIT(NL80211_IFTYPE_AP) | | |
589 | BIT(NL80211_IFTYPE_P2P_GO) | | |
590 | BIT(NL80211_IFTYPE_ADHOC) | | |
591 | BIT(NL80211_IFTYPE_P2P_DEVICE) | | |
592 | BIT(NL80211_IFTYPE_AP_VLAN) | | |
593 | BIT(NL80211_IFTYPE_MONITOR))) | |
594 | wiphy->regulatory_flags |= REGULATORY_IGNORE_STALE_KICKOFF; | |
595 | ||
b0d7aa59 JD |
596 | if (WARN_ON((wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED) && |
597 | (wiphy->regulatory_flags & | |
598 | (REGULATORY_CUSTOM_REG | | |
599 | REGULATORY_STRICT_REG | | |
600 | REGULATORY_COUNTRY_IE_FOLLOW_POWER | | |
601 | REGULATORY_COUNTRY_IE_IGNORE)))) | |
602 | return -EINVAL; | |
603 | ||
be29b99a AK |
604 | if (WARN_ON(wiphy->coalesce && |
605 | (!wiphy->coalesce->n_rules || | |
606 | !wiphy->coalesce->n_patterns) && | |
607 | (!wiphy->coalesce->pattern_min_len || | |
608 | wiphy->coalesce->pattern_min_len > | |
609 | wiphy->coalesce->pattern_max_len))) | |
610 | return -EINVAL; | |
611 | ||
562a7480 JB |
612 | if (WARN_ON(wiphy->ap_sme_capa && |
613 | !(wiphy->flags & WIPHY_FLAG_HAVE_AP_SME))) | |
614 | return -EINVAL; | |
615 | ||
ef15aac6 JB |
616 | if (WARN_ON(wiphy->addresses && !wiphy->n_addresses)) |
617 | return -EINVAL; | |
618 | ||
619 | if (WARN_ON(wiphy->addresses && | |
620 | !is_zero_ether_addr(wiphy->perm_addr) && | |
621 | memcmp(wiphy->perm_addr, wiphy->addresses[0].addr, | |
622 | ETH_ALEN))) | |
623 | return -EINVAL; | |
624 | ||
77765eaf VT |
625 | if (WARN_ON(wiphy->max_acl_mac_addrs && |
626 | (!(wiphy->flags & WIPHY_FLAG_HAVE_AP_SME) || | |
627 | !rdev->ops->set_mac_acl))) | |
628 | return -EINVAL; | |
629 | ||
38de03d2 AS |
630 | /* assure only valid behaviours are flagged by driver |
631 | * hence subtract 2 as bit 0 is invalid. | |
632 | */ | |
633 | if (WARN_ON(wiphy->bss_select_support && | |
634 | (wiphy->bss_select_support & ~(BIT(__NL80211_BSS_SELECT_ATTR_AFTER_LAST) - 2)))) | |
635 | return -EINVAL; | |
636 | ||
ef15aac6 JB |
637 | if (wiphy->addresses) |
638 | memcpy(wiphy->perm_addr, wiphy->addresses[0].addr, ETH_ALEN); | |
639 | ||
f59ac048 LR |
640 | /* sanity check ifmodes */ |
641 | WARN_ON(!ifmodes); | |
2e161f78 | 642 | ifmodes &= ((1 << NUM_NL80211_IFTYPES) - 1) & ~1; |
f59ac048 LR |
643 | if (WARN_ON(ifmodes != wiphy->interface_modes)) |
644 | wiphy->interface_modes = ifmodes; | |
8318d78a | 645 | |
7527a782 JB |
646 | res = wiphy_verify_combinations(wiphy); |
647 | if (res) | |
648 | return res; | |
649 | ||
8318d78a | 650 | /* sanity check supported bands/channels */ |
57fbcce3 | 651 | for (band = 0; band < NUM_NL80211_BANDS; band++) { |
8318d78a JB |
652 | sband = wiphy->bands[band]; |
653 | if (!sband) | |
654 | continue; | |
655 | ||
656 | sband->band = band; | |
3a0c52a6 VK |
657 | if (WARN_ON(!sband->n_channels)) |
658 | return -EINVAL; | |
659 | /* | |
8047d261 | 660 | * on 60GHz band, there are no legacy rates, so |
3a0c52a6 VK |
661 | * n_bitrates is 0 |
662 | */ | |
57fbcce3 | 663 | if (WARN_ON(band != NL80211_BAND_60GHZ && |
3a0c52a6 | 664 | !sband->n_bitrates)) |
881d948c JB |
665 | return -EINVAL; |
666 | ||
40db6c77 AK |
667 | /* |
668 | * Since cfg80211_disable_40mhz_24ghz is global, we can | |
669 | * modify the sband's ht data even if the driver uses a | |
670 | * global structure for that. | |
671 | */ | |
672 | if (cfg80211_disable_40mhz_24ghz && | |
57fbcce3 | 673 | band == NL80211_BAND_2GHZ && |
40db6c77 AK |
674 | sband->ht_cap.ht_supported) { |
675 | sband->ht_cap.cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; | |
676 | sband->ht_cap.cap &= ~IEEE80211_HT_CAP_SGI_40; | |
677 | } | |
678 | ||
881d948c JB |
679 | /* |
680 | * Since we use a u32 for rate bitmaps in | |
681 | * ieee80211_get_response_rate, we cannot | |
682 | * have more than 32 legacy rates. | |
683 | */ | |
684 | if (WARN_ON(sband->n_bitrates > 32)) | |
8318d78a | 685 | return -EINVAL; |
8318d78a JB |
686 | |
687 | for (i = 0; i < sband->n_channels; i++) { | |
688 | sband->channels[i].orig_flags = | |
689 | sband->channels[i].flags; | |
c4a9fafc | 690 | sband->channels[i].orig_mag = INT_MAX; |
8318d78a JB |
691 | sband->channels[i].orig_mpwr = |
692 | sband->channels[i].max_power; | |
693 | sband->channels[i].band = band; | |
694 | } | |
695 | ||
696 | have_band = true; | |
697 | } | |
698 | ||
699 | if (!have_band) { | |
700 | WARN_ON(1); | |
701 | return -EINVAL; | |
702 | } | |
703 | ||
dfb89c56 | 704 | #ifdef CONFIG_PM |
964dc9e2 JB |
705 | if (WARN_ON(rdev->wiphy.wowlan && rdev->wiphy.wowlan->n_patterns && |
706 | (!rdev->wiphy.wowlan->pattern_min_len || | |
707 | rdev->wiphy.wowlan->pattern_min_len > | |
708 | rdev->wiphy.wowlan->pattern_max_len))) | |
709 | return -EINVAL; | |
dfb89c56 | 710 | #endif |
ff1b6e69 | 711 | |
8318d78a JB |
712 | /* check and set up bitrates */ |
713 | ieee80211_set_bitrate_flags(wiphy); | |
714 | ||
00c3a6ed JB |
715 | rdev->wiphy.features |= NL80211_FEATURE_SCAN_FLUSH; |
716 | ||
aa5f66d5 | 717 | rtnl_lock(); |
79c97e97 | 718 | res = device_add(&rdev->wiphy.dev); |
c3d34d5d | 719 | if (res) { |
aa5f66d5 | 720 | rtnl_unlock(); |
c3d34d5d JL |
721 | return res; |
722 | } | |
1f87f7d3 | 723 | |
2f0accc1 | 724 | /* set up regulatory info */ |
57b5ce07 | 725 | wiphy_regulatory_register(wiphy); |
2f0accc1 | 726 | |
5f2aa25e | 727 | list_add_rcu(&rdev->list, &cfg80211_rdev_list); |
f5ea9120 | 728 | cfg80211_rdev_list_generation++; |
704232c2 JB |
729 | |
730 | /* add to debugfs */ | |
79c97e97 JB |
731 | rdev->wiphy.debugfsdir = |
732 | debugfs_create_dir(wiphy_name(&rdev->wiphy), | |
704232c2 | 733 | ieee80211_debugfs_dir); |
79c97e97 JB |
734 | if (IS_ERR(rdev->wiphy.debugfsdir)) |
735 | rdev->wiphy.debugfsdir = NULL; | |
704232c2 | 736 | |
a796dac9 TB |
737 | cfg80211_debugfs_rdev_add(rdev); |
738 | nl80211_notify_wiphy(rdev, NL80211_CMD_NEW_WIPHY); | |
739 | ||
a2f73b6c | 740 | if (wiphy->regulatory_flags & REGULATORY_CUSTOM_REG) { |
73d54c9e LR |
741 | struct regulatory_request request; |
742 | ||
743 | request.wiphy_idx = get_wiphy_idx(wiphy); | |
744 | request.initiator = NL80211_REGDOM_SET_BY_DRIVER; | |
745 | request.alpha2[0] = '9'; | |
746 | request.alpha2[1] = '9'; | |
747 | ||
748 | nl80211_send_reg_change_event(&request); | |
749 | } | |
750 | ||
019ae3a9 KV |
751 | /* Check that nobody globally advertises any capabilities they do not |
752 | * advertise on all possible interface types. | |
753 | */ | |
754 | if (wiphy->extended_capabilities_len && | |
755 | wiphy->num_iftype_ext_capab && | |
756 | wiphy->iftype_ext_capab) { | |
757 | u8 supported_on_all, j; | |
758 | const struct wiphy_iftype_ext_capab *capab; | |
759 | ||
760 | capab = wiphy->iftype_ext_capab; | |
761 | for (j = 0; j < wiphy->extended_capabilities_len; j++) { | |
762 | if (capab[0].extended_capabilities_len > j) | |
763 | supported_on_all = | |
764 | capab[0].extended_capabilities[j]; | |
765 | else | |
766 | supported_on_all = 0x00; | |
767 | for (i = 1; i < wiphy->num_iftype_ext_capab; i++) { | |
768 | if (j >= capab[i].extended_capabilities_len) { | |
769 | supported_on_all = 0x00; | |
770 | break; | |
771 | } | |
772 | supported_on_all &= | |
773 | capab[i].extended_capabilities[j]; | |
774 | } | |
775 | if (WARN_ON(wiphy->extended_capabilities[j] & | |
776 | ~supported_on_all)) | |
777 | break; | |
778 | } | |
779 | } | |
780 | ||
ecb44335 SG |
781 | rdev->wiphy.registered = true; |
782 | rtnl_unlock(); | |
aa5f66d5 JB |
783 | |
784 | res = rfkill_register(rdev->rfkill); | |
785 | if (res) { | |
786 | rfkill_destroy(rdev->rfkill); | |
787 | rdev->rfkill = NULL; | |
788 | wiphy_unregister(&rdev->wiphy); | |
789 | return res; | |
790 | } | |
791 | ||
2f0accc1 | 792 | return 0; |
704232c2 JB |
793 | } |
794 | EXPORT_SYMBOL(wiphy_register); | |
795 | ||
1f87f7d3 JB |
796 | void wiphy_rfkill_start_polling(struct wiphy *wiphy) |
797 | { | |
f26cbf40 | 798 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); |
1f87f7d3 | 799 | |
79c97e97 | 800 | if (!rdev->ops->rfkill_poll) |
1f87f7d3 | 801 | return; |
79c97e97 JB |
802 | rdev->rfkill_ops.poll = cfg80211_rfkill_poll; |
803 | rfkill_resume_polling(rdev->rfkill); | |
1f87f7d3 JB |
804 | } |
805 | EXPORT_SYMBOL(wiphy_rfkill_start_polling); | |
806 | ||
807 | void wiphy_rfkill_stop_polling(struct wiphy *wiphy) | |
808 | { | |
f26cbf40 | 809 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); |
1f87f7d3 | 810 | |
79c97e97 | 811 | rfkill_pause_polling(rdev->rfkill); |
1f87f7d3 JB |
812 | } |
813 | EXPORT_SYMBOL(wiphy_rfkill_stop_polling); | |
814 | ||
704232c2 JB |
815 | void wiphy_unregister(struct wiphy *wiphy) |
816 | { | |
f26cbf40 | 817 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); |
704232c2 | 818 | |
ad002395 JB |
819 | wait_event(rdev->dev_wait, ({ |
820 | int __count; | |
5fe231e8 | 821 | rtnl_lock(); |
ad002395 | 822 | __count = rdev->opencount; |
5fe231e8 | 823 | rtnl_unlock(); |
c4f60846 | 824 | __count == 0; })); |
ad002395 | 825 | |
aa5f66d5 JB |
826 | if (rdev->rfkill) |
827 | rfkill_unregister(rdev->rfkill); | |
256c90de | 828 | |
5fe231e8 | 829 | rtnl_lock(); |
3bb20556 | 830 | nl80211_notify_wiphy(rdev, NL80211_CMD_DEL_WIPHY); |
5fe231e8 JB |
831 | rdev->wiphy.registered = false; |
832 | ||
53873f13 | 833 | WARN_ON(!list_empty(&rdev->wiphy.wdev_list)); |
ad002395 JB |
834 | |
835 | /* | |
836 | * First remove the hardware from everywhere, this makes | |
837 | * it impossible to find from userspace. | |
838 | */ | |
7bcfaf2f | 839 | debugfs_remove_recursive(rdev->wiphy.debugfsdir); |
5f2aa25e JB |
840 | list_del_rcu(&rdev->list); |
841 | synchronize_rcu(); | |
f16bfc1c | 842 | |
bfead080 LR |
843 | /* |
844 | * If this device got a regulatory hint tell core its | |
845 | * free to listen now to a new shiny device regulatory hint | |
846 | */ | |
847 | wiphy_regulatory_deregister(wiphy); | |
3f2355cb | 848 | |
f5ea9120 | 849 | cfg80211_rdev_list_generation++; |
79c97e97 | 850 | device_del(&rdev->wiphy.dev); |
704232c2 | 851 | |
5fe231e8 | 852 | rtnl_unlock(); |
6682588a | 853 | |
36e6fea8 | 854 | flush_work(&rdev->scan_done_wk); |
6682588a | 855 | cancel_work_sync(&rdev->conn_work); |
6682588a | 856 | flush_work(&rdev->event_work); |
04f39047 | 857 | cancel_delayed_work_sync(&rdev->dfs_update_channels_wk); |
78f22b6a | 858 | flush_work(&rdev->destroy_work); |
93a1e86c | 859 | flush_work(&rdev->sched_scan_stop_wk); |
33d8783c | 860 | flush_work(&rdev->mlme_unreg_wk); |
6d52563f | 861 | |
6abb9cb9 JB |
862 | #ifdef CONFIG_PM |
863 | if (rdev->wiphy.wowlan_config && rdev->ops->set_wakeup) | |
e35e4d28 | 864 | rdev_set_wakeup(rdev, false); |
6abb9cb9 | 865 | #endif |
6d52563f | 866 | cfg80211_rdev_free_wowlan(rdev); |
be29b99a | 867 | cfg80211_rdev_free_coalesce(rdev); |
704232c2 JB |
868 | } |
869 | EXPORT_SYMBOL(wiphy_unregister); | |
870 | ||
79c97e97 | 871 | void cfg80211_dev_free(struct cfg80211_registered_device *rdev) |
704232c2 | 872 | { |
2a519311 | 873 | struct cfg80211_internal_bss *scan, *tmp; |
37c73b5f | 874 | struct cfg80211_beacon_registration *reg, *treg; |
79c97e97 | 875 | rfkill_destroy(rdev->rfkill); |
37c73b5f BG |
876 | list_for_each_entry_safe(reg, treg, &rdev->beacon_registrations, list) { |
877 | list_del(®->list); | |
878 | kfree(reg); | |
879 | } | |
79c97e97 | 880 | list_for_each_entry_safe(scan, tmp, &rdev->bss_list, list) |
5b112d3d | 881 | cfg80211_put_bss(&rdev->wiphy, &scan->pub); |
79c97e97 | 882 | kfree(rdev); |
704232c2 JB |
883 | } |
884 | ||
885 | void wiphy_free(struct wiphy *wiphy) | |
886 | { | |
887 | put_device(&wiphy->dev); | |
888 | } | |
889 | EXPORT_SYMBOL(wiphy_free); | |
890 | ||
1f87f7d3 JB |
891 | void wiphy_rfkill_set_hw_state(struct wiphy *wiphy, bool blocked) |
892 | { | |
f26cbf40 | 893 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); |
1f87f7d3 | 894 | |
79c97e97 JB |
895 | if (rfkill_set_hw_state(rdev->rfkill, blocked)) |
896 | schedule_work(&rdev->rfkill_sync); | |
1f87f7d3 JB |
897 | } |
898 | EXPORT_SYMBOL(wiphy_rfkill_set_hw_state); | |
899 | ||
98104fde JB |
900 | void cfg80211_unregister_wdev(struct wireless_dev *wdev) |
901 | { | |
f26cbf40 | 902 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); |
98104fde JB |
903 | |
904 | ASSERT_RTNL(); | |
905 | ||
906 | if (WARN_ON(wdev->netdev)) | |
907 | return; | |
908 | ||
98104fde JB |
909 | list_del_rcu(&wdev->list); |
910 | rdev->devlist_generation++; | |
911 | ||
912 | switch (wdev->iftype) { | |
913 | case NL80211_IFTYPE_P2P_DEVICE: | |
33d8783c | 914 | cfg80211_mlme_purge_registrations(wdev); |
f9f47529 | 915 | cfg80211_stop_p2p_device(rdev, wdev); |
98104fde JB |
916 | break; |
917 | default: | |
918 | WARN_ON_ONCE(1); | |
919 | break; | |
920 | } | |
98104fde JB |
921 | } |
922 | EXPORT_SYMBOL(cfg80211_unregister_wdev); | |
923 | ||
f1e3d556 | 924 | static const struct device_type wiphy_type = { |
053a93dd MH |
925 | .name = "wlan", |
926 | }; | |
927 | ||
dbbae26a MK |
928 | void cfg80211_update_iface_num(struct cfg80211_registered_device *rdev, |
929 | enum nl80211_iftype iftype, int num) | |
930 | { | |
c5a7e582 | 931 | ASSERT_RTNL(); |
dbbae26a MK |
932 | |
933 | rdev->num_running_ifaces += num; | |
934 | if (iftype == NL80211_IFTYPE_MONITOR) | |
935 | rdev->num_running_monitor_ifaces += num; | |
dbbae26a MK |
936 | } |
937 | ||
f04c2203 MK |
938 | void __cfg80211_leave(struct cfg80211_registered_device *rdev, |
939 | struct wireless_dev *wdev) | |
81256969 SG |
940 | { |
941 | struct net_device *dev = wdev->netdev; | |
31a60ed1 | 942 | struct cfg80211_sched_scan_request *sched_scan_req; |
81256969 | 943 | |
24d584d7 | 944 | ASSERT_RTNL(); |
f04c2203 | 945 | ASSERT_WDEV_LOCK(wdev); |
24d584d7 | 946 | |
81256969 SG |
947 | switch (wdev->iftype) { |
948 | case NL80211_IFTYPE_ADHOC: | |
f04c2203 | 949 | __cfg80211_leave_ibss(rdev, dev, true); |
81256969 SG |
950 | break; |
951 | case NL80211_IFTYPE_P2P_CLIENT: | |
952 | case NL80211_IFTYPE_STATION: | |
31a60ed1 JR |
953 | sched_scan_req = rtnl_dereference(rdev->sched_scan_req); |
954 | if (sched_scan_req && dev == sched_scan_req->dev) | |
24d584d7 | 955 | __cfg80211_stop_sched_scan(rdev, false); |
81256969 | 956 | |
81256969 SG |
957 | #ifdef CONFIG_CFG80211_WEXT |
958 | kfree(wdev->wext.ie); | |
959 | wdev->wext.ie = NULL; | |
960 | wdev->wext.ie_len = 0; | |
961 | wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC; | |
962 | #endif | |
83739b03 JB |
963 | cfg80211_disconnect(rdev, dev, |
964 | WLAN_REASON_DEAUTH_LEAVING, true); | |
81256969 SG |
965 | break; |
966 | case NL80211_IFTYPE_MESH_POINT: | |
f04c2203 | 967 | __cfg80211_leave_mesh(rdev, dev); |
81256969 SG |
968 | break; |
969 | case NL80211_IFTYPE_AP: | |
74418ede | 970 | case NL80211_IFTYPE_P2P_GO: |
f04c2203 | 971 | __cfg80211_stop_ap(rdev, dev, true); |
81256969 | 972 | break; |
6e0bd6c3 RL |
973 | case NL80211_IFTYPE_OCB: |
974 | __cfg80211_leave_ocb(rdev, dev); | |
975 | break; | |
de4fcbad JB |
976 | case NL80211_IFTYPE_WDS: |
977 | /* must be handled by mac80211/driver, has no APIs */ | |
978 | break; | |
979 | case NL80211_IFTYPE_P2P_DEVICE: | |
980 | /* cannot happen, has no netdev */ | |
981 | break; | |
982 | case NL80211_IFTYPE_AP_VLAN: | |
983 | case NL80211_IFTYPE_MONITOR: | |
984 | /* nothing to do */ | |
985 | break; | |
986 | case NL80211_IFTYPE_UNSPECIFIED: | |
987 | case NUM_NL80211_IFTYPES: | |
988 | /* invalid */ | |
81256969 SG |
989 | break; |
990 | } | |
81256969 SG |
991 | } |
992 | ||
f04c2203 MK |
993 | void cfg80211_leave(struct cfg80211_registered_device *rdev, |
994 | struct wireless_dev *wdev) | |
995 | { | |
996 | wdev_lock(wdev); | |
997 | __cfg80211_leave(rdev, wdev); | |
998 | wdev_unlock(wdev); | |
999 | } | |
1000 | ||
1001 | void cfg80211_stop_iface(struct wiphy *wiphy, struct wireless_dev *wdev, | |
1002 | gfp_t gfp) | |
1003 | { | |
1004 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); | |
1005 | struct cfg80211_event *ev; | |
1006 | unsigned long flags; | |
1007 | ||
1008 | trace_cfg80211_stop_iface(wiphy, wdev); | |
1009 | ||
1010 | ev = kzalloc(sizeof(*ev), gfp); | |
1011 | if (!ev) | |
1012 | return; | |
1013 | ||
1014 | ev->type = EVENT_STOPPED; | |
1015 | ||
1016 | spin_lock_irqsave(&wdev->event_lock, flags); | |
1017 | list_add_tail(&ev->list, &wdev->event_list); | |
1018 | spin_unlock_irqrestore(&wdev->event_lock, flags); | |
1019 | queue_work(cfg80211_wq, &rdev->event_work); | |
1020 | } | |
1021 | EXPORT_SYMBOL(cfg80211_stop_iface); | |
1022 | ||
c4f60846 | 1023 | static int cfg80211_netdev_notifier_call(struct notifier_block *nb, |
351638e7 | 1024 | unsigned long state, void *ptr) |
704232c2 | 1025 | { |
351638e7 | 1026 | struct net_device *dev = netdev_notifier_info_to_dev(ptr); |
2a783c13 | 1027 | struct wireless_dev *wdev = dev->ieee80211_ptr; |
704232c2 | 1028 | struct cfg80211_registered_device *rdev; |
31a60ed1 | 1029 | struct cfg80211_sched_scan_request *sched_scan_req; |
704232c2 | 1030 | |
2a783c13 | 1031 | if (!wdev) |
1f87f7d3 | 1032 | return NOTIFY_DONE; |
704232c2 | 1033 | |
f26cbf40 | 1034 | rdev = wiphy_to_rdev(wdev->wiphy); |
704232c2 | 1035 | |
2a783c13 | 1036 | WARN_ON(wdev->iftype == NL80211_IFTYPE_UNSPECIFIED); |
60719ffd | 1037 | |
704232c2 | 1038 | switch (state) { |
053a93dd MH |
1039 | case NETDEV_POST_INIT: |
1040 | SET_NETDEV_DEVTYPE(dev, &wiphy_type); | |
1041 | break; | |
704232c2 | 1042 | case NETDEV_REGISTER: |
0ff6ce7b JB |
1043 | /* |
1044 | * NB: cannot take rdev->mtx here because this may be | |
1045 | * called within code protected by it when interfaces | |
1046 | * are added with nl80211. | |
1047 | */ | |
667503dd JB |
1048 | mutex_init(&wdev->mtx); |
1049 | INIT_LIST_HEAD(&wdev->event_list); | |
1050 | spin_lock_init(&wdev->event_lock); | |
2e161f78 JB |
1051 | INIT_LIST_HEAD(&wdev->mgmt_registrations); |
1052 | spin_lock_init(&wdev->mgmt_registrations_lock); | |
026331c4 | 1053 | |
89a54e48 | 1054 | wdev->identifier = ++rdev->wdev_id; |
53873f13 | 1055 | list_add_rcu(&wdev->list, &rdev->wiphy.wdev_list); |
f5ea9120 | 1056 | rdev->devlist_generation++; |
463d0183 JB |
1057 | /* can only change netns with wiphy */ |
1058 | dev->features |= NETIF_F_NETNS_LOCAL; | |
1059 | ||
704232c2 JB |
1060 | if (sysfs_create_link(&dev->dev.kobj, &rdev->wiphy.dev.kobj, |
1061 | "phy80211")) { | |
e9c0268f | 1062 | pr_err("failed to add phy80211 symlink to netdev!\n"); |
704232c2 | 1063 | } |
2a783c13 | 1064 | wdev->netdev = dev; |
3d23e349 | 1065 | #ifdef CONFIG_CFG80211_WEXT |
2a783c13 JB |
1066 | wdev->wext.default_key = -1; |
1067 | wdev->wext.default_mgmt_key = -1; | |
f2129354 | 1068 | wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC; |
ffb9eb3d KV |
1069 | #endif |
1070 | ||
5be83de5 | 1071 | if (wdev->wiphy->flags & WIPHY_FLAG_PS_ON_BY_DEFAULT) |
ffb9eb3d | 1072 | wdev->ps = true; |
5be83de5 | 1073 | else |
ffb9eb3d | 1074 | wdev->ps = false; |
9043f3b8 JO |
1075 | /* allow mac80211 to determine the timeout */ |
1076 | wdev->ps_timeout = -1; | |
ffb9eb3d | 1077 | |
ad4bb6f8 | 1078 | if ((wdev->iftype == NL80211_IFTYPE_STATION || |
074ac8df | 1079 | wdev->iftype == NL80211_IFTYPE_P2P_CLIENT || |
ad4bb6f8 JB |
1080 | wdev->iftype == NL80211_IFTYPE_ADHOC) && !wdev->use_4addr) |
1081 | dev->priv_flags |= IFF_DONT_BRIDGE; | |
704232c2 | 1082 | break; |
04a773ad | 1083 | case NETDEV_GOING_DOWN: |
81256969 | 1084 | cfg80211_leave(rdev, wdev); |
01a0ac41 JB |
1085 | break; |
1086 | case NETDEV_DOWN: | |
dbbae26a | 1087 | cfg80211_update_iface_num(rdev, wdev->iftype, -1); |
a617302c JB |
1088 | if (rdev->scan_req && rdev->scan_req->wdev == wdev) { |
1089 | if (WARN_ON(!rdev->scan_req->notified)) | |
1d76250b | 1090 | rdev->scan_req->info.aborted = true; |
f9d15d16 | 1091 | ___cfg80211_scan_done(rdev, false); |
a617302c | 1092 | } |
5fe231e8 | 1093 | |
31a60ed1 JR |
1094 | sched_scan_req = rtnl_dereference(rdev->sched_scan_req); |
1095 | if (WARN_ON(sched_scan_req && | |
1096 | sched_scan_req->dev == wdev->netdev)) { | |
5fe231e8 JB |
1097 | __cfg80211_stop_sched_scan(rdev, false); |
1098 | } | |
1099 | ||
1100 | rdev->opencount--; | |
1101 | wake_up(&rdev->dev_wait); | |
04a773ad JB |
1102 | break; |
1103 | case NETDEV_UP: | |
4290cb4b | 1104 | cfg80211_update_iface_num(rdev, wdev->iftype, 1); |
667503dd | 1105 | wdev_lock(wdev); |
f2129354 | 1106 | switch (wdev->iftype) { |
29cbe68c | 1107 | #ifdef CONFIG_CFG80211_WEXT |
f2129354 | 1108 | case NL80211_IFTYPE_ADHOC: |
fffd0934 | 1109 | cfg80211_ibss_wext_join(rdev, wdev); |
04a773ad | 1110 | break; |
f2129354 | 1111 | case NL80211_IFTYPE_STATION: |
fffd0934 | 1112 | cfg80211_mgd_wext_connect(rdev, wdev); |
f2129354 | 1113 | break; |
29cbe68c | 1114 | #endif |
c80d545d | 1115 | #ifdef CONFIG_MAC80211_MESH |
29cbe68c | 1116 | case NL80211_IFTYPE_MESH_POINT: |
c80d545d JC |
1117 | { |
1118 | /* backward compat code... */ | |
1119 | struct mesh_setup setup; | |
1120 | memcpy(&setup, &default_mesh_setup, | |
1121 | sizeof(setup)); | |
1122 | /* back compat only needed for mesh_id */ | |
1123 | setup.mesh_id = wdev->ssid; | |
1124 | setup.mesh_id_len = wdev->mesh_id_up_len; | |
1125 | if (wdev->mesh_id_up_len) | |
1126 | __cfg80211_join_mesh(rdev, dev, | |
1127 | &setup, | |
1128 | &default_mesh_config); | |
1129 | break; | |
1130 | } | |
1131 | #endif | |
f2129354 | 1132 | default: |
04a773ad | 1133 | break; |
f2129354 | 1134 | } |
667503dd | 1135 | wdev_unlock(wdev); |
ad002395 | 1136 | rdev->opencount++; |
bf6a0579 JO |
1137 | |
1138 | /* | |
1139 | * Configure power management to the driver here so that its | |
1140 | * correctly set also after interface type changes etc. | |
1141 | */ | |
5966f2dd EP |
1142 | if ((wdev->iftype == NL80211_IFTYPE_STATION || |
1143 | wdev->iftype == NL80211_IFTYPE_P2P_CLIENT) && | |
bf6a0579 | 1144 | rdev->ops->set_power_mgmt) |
e35e4d28 HG |
1145 | if (rdev_set_power_mgmt(rdev, dev, wdev->ps, |
1146 | wdev->ps_timeout)) { | |
bf6a0579 JO |
1147 | /* assume this means it's off */ |
1148 | wdev->ps = false; | |
1149 | } | |
2a783c13 | 1150 | break; |
704232c2 | 1151 | case NETDEV_UNREGISTER: |
e40cbdac JB |
1152 | /* |
1153 | * It is possible to get NETDEV_UNREGISTER | |
1154 | * multiple times. To detect that, check | |
1155 | * that the interface is still on the list | |
1156 | * of registered interfaces, and only then | |
1157 | * remove and clean it up. | |
1158 | */ | |
2a783c13 | 1159 | if (!list_empty(&wdev->list)) { |
704232c2 | 1160 | sysfs_remove_link(&dev->dev.kobj, "phy80211"); |
5f2aa25e | 1161 | list_del_rcu(&wdev->list); |
f5ea9120 | 1162 | rdev->devlist_generation++; |
2e161f78 | 1163 | cfg80211_mlme_purge_registrations(wdev); |
3d23e349 | 1164 | #ifdef CONFIG_CFG80211_WEXT |
538c9eb8 | 1165 | kzfree(wdev->wext.keys); |
fffd0934 | 1166 | #endif |
e40cbdac | 1167 | } |
5f2aa25e JB |
1168 | /* |
1169 | * synchronise (so that we won't find this netdev | |
1170 | * from other code any more) and then clear the list | |
1171 | * head so that the above code can safely check for | |
1172 | * !list_empty() to avoid double-cleanup. | |
1173 | */ | |
1174 | synchronize_rcu(); | |
1175 | INIT_LIST_HEAD(&wdev->list); | |
1f6fc43e DD |
1176 | /* |
1177 | * Ensure that all events have been processed and | |
1178 | * freed. | |
1179 | */ | |
1180 | cfg80211_process_wdev_events(wdev); | |
f9bef3df BG |
1181 | |
1182 | if (WARN_ON(wdev->current_bss)) { | |
1183 | cfg80211_unhold_bss(wdev->current_bss); | |
1184 | cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub); | |
1185 | wdev->current_bss = NULL; | |
1186 | } | |
704232c2 | 1187 | break; |
1f87f7d3 | 1188 | case NETDEV_PRE_UP: |
0b20633d JB |
1189 | if (!(wdev->wiphy->interface_modes & BIT(wdev->iftype))) |
1190 | return notifier_from_errno(-EOPNOTSUPP); | |
b6a55015 LC |
1191 | if (rfkill_blocked(rdev->rfkill)) |
1192 | return notifier_from_errno(-ERFKILL); | |
1f87f7d3 | 1193 | break; |
6784c7db ZG |
1194 | default: |
1195 | return NOTIFY_DONE; | |
704232c2 JB |
1196 | } |
1197 | ||
cb150b9d JB |
1198 | wireless_nlevent_flush(); |
1199 | ||
6784c7db | 1200 | return NOTIFY_OK; |
704232c2 JB |
1201 | } |
1202 | ||
1203 | static struct notifier_block cfg80211_netdev_notifier = { | |
1204 | .notifier_call = cfg80211_netdev_notifier_call, | |
1205 | }; | |
1206 | ||
463d0183 JB |
1207 | static void __net_exit cfg80211_pernet_exit(struct net *net) |
1208 | { | |
1209 | struct cfg80211_registered_device *rdev; | |
1210 | ||
1211 | rtnl_lock(); | |
463d0183 JB |
1212 | list_for_each_entry(rdev, &cfg80211_rdev_list, list) { |
1213 | if (net_eq(wiphy_net(&rdev->wiphy), net)) | |
1214 | WARN_ON(cfg80211_switch_netns(rdev, &init_net)); | |
1215 | } | |
463d0183 JB |
1216 | rtnl_unlock(); |
1217 | } | |
1218 | ||
1219 | static struct pernet_operations cfg80211_pernet_ops = { | |
1220 | .exit = cfg80211_pernet_exit, | |
1221 | }; | |
1222 | ||
1223 | static int __init cfg80211_init(void) | |
704232c2 | 1224 | { |
b2e1b302 LR |
1225 | int err; |
1226 | ||
463d0183 JB |
1227 | err = register_pernet_device(&cfg80211_pernet_ops); |
1228 | if (err) | |
1229 | goto out_fail_pernet; | |
1230 | ||
b2e1b302 | 1231 | err = wiphy_sysfs_init(); |
704232c2 JB |
1232 | if (err) |
1233 | goto out_fail_sysfs; | |
1234 | ||
1235 | err = register_netdevice_notifier(&cfg80211_netdev_notifier); | |
1236 | if (err) | |
1237 | goto out_fail_notifier; | |
1238 | ||
55682965 JB |
1239 | err = nl80211_init(); |
1240 | if (err) | |
1241 | goto out_fail_nl80211; | |
1242 | ||
704232c2 JB |
1243 | ieee80211_debugfs_dir = debugfs_create_dir("ieee80211", NULL); |
1244 | ||
b2e1b302 LR |
1245 | err = regulatory_init(); |
1246 | if (err) | |
1247 | goto out_fail_reg; | |
1248 | ||
e60d7443 | 1249 | cfg80211_wq = create_singlethread_workqueue("cfg80211"); |
f00f188f WY |
1250 | if (!cfg80211_wq) { |
1251 | err = -ENOMEM; | |
e60d7443 | 1252 | goto out_fail_wq; |
f00f188f | 1253 | } |
e60d7443 | 1254 | |
704232c2 JB |
1255 | return 0; |
1256 | ||
e60d7443 AB |
1257 | out_fail_wq: |
1258 | regulatory_exit(); | |
b2e1b302 LR |
1259 | out_fail_reg: |
1260 | debugfs_remove(ieee80211_debugfs_dir); | |
81daf735 | 1261 | nl80211_exit(); |
55682965 JB |
1262 | out_fail_nl80211: |
1263 | unregister_netdevice_notifier(&cfg80211_netdev_notifier); | |
704232c2 JB |
1264 | out_fail_notifier: |
1265 | wiphy_sysfs_exit(); | |
1266 | out_fail_sysfs: | |
463d0183 JB |
1267 | unregister_pernet_device(&cfg80211_pernet_ops); |
1268 | out_fail_pernet: | |
704232c2 JB |
1269 | return err; |
1270 | } | |
3a462465 | 1271 | subsys_initcall(cfg80211_init); |
704232c2 | 1272 | |
f884e387 | 1273 | static void __exit cfg80211_exit(void) |
704232c2 JB |
1274 | { |
1275 | debugfs_remove(ieee80211_debugfs_dir); | |
55682965 | 1276 | nl80211_exit(); |
704232c2 JB |
1277 | unregister_netdevice_notifier(&cfg80211_netdev_notifier); |
1278 | wiphy_sysfs_exit(); | |
b2e1b302 | 1279 | regulatory_exit(); |
463d0183 | 1280 | unregister_pernet_device(&cfg80211_pernet_ops); |
e60d7443 | 1281 | destroy_workqueue(cfg80211_wq); |
704232c2 JB |
1282 | } |
1283 | module_exit(cfg80211_exit); |