1
2
3
4
5
6
7
8
9
10
11#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
12
13#include <linux/if.h>
14#include <linux/module.h>
15#include <linux/err.h>
16#include <linux/list.h>
17#include <linux/slab.h>
18#include <linux/nl80211.h>
19#include <linux/debugfs.h>
20#include <linux/notifier.h>
21#include <linux/device.h>
22#include <linux/etherdevice.h>
23#include <linux/rtnetlink.h>
24#include <linux/sched.h>
25#include <net/genetlink.h>
26#include <net/cfg80211.h>
27#include "nl80211.h"
28#include "core.h"
29#include "sysfs.h"
30#include "debugfs.h"
31#include "wext-compat.h"
32#include "rdev-ops.h"
33
34
35#define PHY_NAME "phy"
36
37MODULE_AUTHOR("Johannes Berg");
38MODULE_LICENSE("GPL");
39MODULE_DESCRIPTION("wireless configuration support");
40MODULE_ALIAS_GENL_FAMILY(NL80211_GENL_NAME);
41
42
43LIST_HEAD(cfg80211_rdev_list);
44int cfg80211_rdev_list_generation;
45
46
47static struct dentry *ieee80211_debugfs_dir;
48
49
50struct workqueue_struct *cfg80211_wq;
51
52static bool cfg80211_disable_40mhz_24ghz;
53module_param(cfg80211_disable_40mhz_24ghz, bool, 0644);
54MODULE_PARM_DESC(cfg80211_disable_40mhz_24ghz,
55 "Disable 40MHz support in the 2.4GHz band");
56
57struct cfg80211_registered_device *cfg80211_rdev_by_wiphy_idx(int wiphy_idx)
58{
59 struct cfg80211_registered_device *result = NULL, *rdev;
60
61 ASSERT_RTNL();
62
63 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
64 if (rdev->wiphy_idx == wiphy_idx) {
65 result = rdev;
66 break;
67 }
68 }
69
70 return result;
71}
72
73int get_wiphy_idx(struct wiphy *wiphy)
74{
75 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
76
77 return rdev->wiphy_idx;
78}
79
80struct wiphy *wiphy_idx_to_wiphy(int wiphy_idx)
81{
82 struct cfg80211_registered_device *rdev;
83
84 ASSERT_RTNL();
85
86 rdev = cfg80211_rdev_by_wiphy_idx(wiphy_idx);
87 if (!rdev)
88 return NULL;
89 return &rdev->wiphy;
90}
91
92static int cfg80211_dev_check_name(struct cfg80211_registered_device *rdev,
93 const char *newname)
94{
95 struct cfg80211_registered_device *rdev2;
96 int wiphy_idx, taken = -1, digits;
97
98 ASSERT_RTNL();
99
100 if (strlen(newname) > NL80211_WIPHY_NAME_MAXLEN)
101 return -EINVAL;
102
103
104 sscanf(newname, PHY_NAME "%d%n", &wiphy_idx, &taken);
105 if (taken == strlen(newname) && wiphy_idx != rdev->wiphy_idx) {
106
107 digits = 1;
108 while (wiphy_idx /= 10)
109 digits++;
110
111
112
113
114 if (taken == strlen(PHY_NAME) + digits)
115 return -EINVAL;
116 }
117
118
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
126int cfg80211_dev_rename(struct cfg80211_registered_device *rdev,
127 char *newname)
128{
129 int result;
130
131 ASSERT_RTNL();
132
133
134 if (strcmp(newname, wiphy_name(&rdev->wiphy)) == 0)
135 return 0;
136
137 result = cfg80211_dev_check_name(rdev, newname);
138 if (result < 0)
139 return result;
140
141 result = device_rename(&rdev->wiphy.dev, newname);
142 if (result)
143 return result;
144
145 if (rdev->wiphy.debugfsdir)
146 debugfs_rename(rdev->wiphy.debugfsdir->d_parent,
147 rdev->wiphy.debugfsdir,
148 rdev->wiphy.debugfsdir->d_parent, newname);
149
150 nl80211_notify_wiphy(rdev, NL80211_CMD_NEW_WIPHY);
151
152 return 0;
153}
154
155int cfg80211_switch_netns(struct cfg80211_registered_device *rdev,
156 struct net *net)
157{
158 struct wireless_dev *wdev;
159 int err = 0;
160
161 if (!(rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK))
162 return -EOPNOTSUPP;
163
164 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
165 if (!wdev->netdev)
166 continue;
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
176 net = wiphy_net(&rdev->wiphy);
177
178 list_for_each_entry_continue_reverse(wdev,
179 &rdev->wiphy.wdev_list,
180 list) {
181 if (!wdev->netdev)
182 continue;
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 }
189
190 return err;
191 }
192
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
200 wiphy_net_set(&rdev->wiphy, net);
201
202 err = device_rename(&rdev->wiphy.dev, dev_name(&rdev->wiphy.dev));
203 WARN_ON(err);
204
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
212 return 0;
213}
214
215static void cfg80211_rfkill_poll(struct rfkill *rfkill, void *data)
216{
217 struct cfg80211_registered_device *rdev = data;
218
219 rdev_rfkill_poll(rdev);
220}
221
222void cfg80211_stop_p2p_device(struct cfg80211_registered_device *rdev,
223 struct wireless_dev *wdev)
224{
225 ASSERT_RTNL();
226
227 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_P2P_DEVICE))
228 return;
229
230 if (!wdev_running(wdev))
231 return;
232
233 rdev_stop_p2p_device(rdev, wdev);
234 wdev->is_running = false;
235
236 rdev->opencount--;
237
238 if (rdev->scan_req && rdev->scan_req->wdev == wdev) {
239 if (WARN_ON(!rdev->scan_req->notified))
240 rdev->scan_req->info.aborted = true;
241 ___cfg80211_scan_done(rdev, false);
242 }
243}
244
245void cfg80211_stop_nan(struct cfg80211_registered_device *rdev,
246 struct wireless_dev *wdev)
247{
248 ASSERT_RTNL();
249
250 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_NAN))
251 return;
252
253 if (!wdev_running(wdev))
254 return;
255
256 rdev_stop_nan(rdev, wdev);
257 wdev->is_running = false;
258
259 rdev->opencount--;
260}
261
262void cfg80211_shutdown_all_interfaces(struct wiphy *wiphy)
263{
264 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
265 struct wireless_dev *wdev;
266
267 ASSERT_RTNL();
268
269 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
270 if (wdev->netdev) {
271 dev_close(wdev->netdev);
272 continue;
273 }
274
275 switch (wdev->iftype) {
276 case NL80211_IFTYPE_P2P_DEVICE:
277 cfg80211_stop_p2p_device(rdev, wdev);
278 break;
279 case NL80211_IFTYPE_NAN:
280 cfg80211_stop_nan(rdev, wdev);
281 break;
282 default:
283 break;
284 }
285 }
286}
287EXPORT_SYMBOL_GPL(cfg80211_shutdown_all_interfaces);
288
289static int cfg80211_rfkill_set_block(void *data, bool blocked)
290{
291 struct cfg80211_registered_device *rdev = data;
292
293 if (!blocked)
294 return 0;
295
296 rtnl_lock();
297 cfg80211_shutdown_all_interfaces(&rdev->wiphy);
298 rtnl_unlock();
299
300 return 0;
301}
302
303static void cfg80211_rfkill_block_work(struct work_struct *work)
304{
305 struct cfg80211_registered_device *rdev;
306
307 rdev = container_of(work, struct cfg80211_registered_device,
308 rfkill_block);
309 cfg80211_rfkill_set_block(rdev, true);
310}
311
312static void cfg80211_event_work(struct work_struct *work)
313{
314 struct cfg80211_registered_device *rdev;
315
316 rdev = container_of(work, struct cfg80211_registered_device,
317 event_work);
318
319 rtnl_lock();
320 cfg80211_process_rdev_events(rdev);
321 rtnl_unlock();
322}
323
324void cfg80211_destroy_ifaces(struct cfg80211_registered_device *rdev)
325{
326 struct wireless_dev *wdev, *tmp;
327
328 ASSERT_RTNL();
329
330 list_for_each_entry_safe(wdev, tmp, &rdev->wiphy.wdev_list, list) {
331 if (wdev->nl_owner_dead)
332 rdev_del_virtual_intf(rdev, wdev);
333 }
334}
335
336static void cfg80211_destroy_iface_wk(struct work_struct *work)
337{
338 struct cfg80211_registered_device *rdev;
339
340 rdev = container_of(work, struct cfg80211_registered_device,
341 destroy_work);
342
343 rtnl_lock();
344 cfg80211_destroy_ifaces(rdev);
345 rtnl_unlock();
346}
347
348static void cfg80211_sched_scan_stop_wk(struct work_struct *work)
349{
350 struct cfg80211_registered_device *rdev;
351 struct cfg80211_sched_scan_request *req, *tmp;
352
353 rdev = container_of(work, struct cfg80211_registered_device,
354 sched_scan_stop_wk);
355
356 rtnl_lock();
357 list_for_each_entry_safe(req, tmp, &rdev->sched_scan_req_list, list) {
358 if (req->nl_owner_dead)
359 cfg80211_stop_sched_scan_req(rdev, req, false);
360 }
361 rtnl_unlock();
362}
363
364static void cfg80211_propagate_radar_detect_wk(struct work_struct *work)
365{
366 struct cfg80211_registered_device *rdev;
367
368 rdev = container_of(work, struct cfg80211_registered_device,
369 propagate_radar_detect_wk);
370
371 rtnl_lock();
372
373 regulatory_propagate_dfs_state(&rdev->wiphy, &rdev->radar_chandef,
374 NL80211_DFS_UNAVAILABLE,
375 NL80211_RADAR_DETECTED);
376
377 rtnl_unlock();
378}
379
380static void cfg80211_propagate_cac_done_wk(struct work_struct *work)
381{
382 struct cfg80211_registered_device *rdev;
383
384 rdev = container_of(work, struct cfg80211_registered_device,
385 propagate_cac_done_wk);
386
387 rtnl_lock();
388
389 regulatory_propagate_dfs_state(&rdev->wiphy, &rdev->cac_done_chandef,
390 NL80211_DFS_AVAILABLE,
391 NL80211_RADAR_CAC_FINISHED);
392
393 rtnl_unlock();
394}
395
396
397
398struct wiphy *wiphy_new_nm(const struct cfg80211_ops *ops, int sizeof_priv,
399 const char *requested_name)
400{
401 static atomic_t wiphy_counter = ATOMIC_INIT(0);
402
403 struct cfg80211_registered_device *rdev;
404 int alloc_size;
405
406 WARN_ON(ops->add_key && (!ops->del_key || !ops->set_default_key));
407 WARN_ON(ops->auth && (!ops->assoc || !ops->deauth || !ops->disassoc));
408 WARN_ON(ops->connect && !ops->disconnect);
409 WARN_ON(ops->join_ibss && !ops->leave_ibss);
410 WARN_ON(ops->add_virtual_intf && !ops->del_virtual_intf);
411 WARN_ON(ops->add_station && !ops->del_station);
412 WARN_ON(ops->add_mpath && !ops->del_mpath);
413 WARN_ON(ops->join_mesh && !ops->leave_mesh);
414 WARN_ON(ops->start_p2p_device && !ops->stop_p2p_device);
415 WARN_ON(ops->start_ap && !ops->stop_ap);
416 WARN_ON(ops->join_ocb && !ops->leave_ocb);
417 WARN_ON(ops->suspend && !ops->resume);
418 WARN_ON(ops->sched_scan_start && !ops->sched_scan_stop);
419 WARN_ON(ops->remain_on_channel && !ops->cancel_remain_on_channel);
420 WARN_ON(ops->tdls_channel_switch && !ops->tdls_cancel_channel_switch);
421 WARN_ON(ops->add_tx_ts && !ops->del_tx_ts);
422
423 alloc_size = sizeof(*rdev) + sizeof_priv;
424
425 rdev = kzalloc(alloc_size, GFP_KERNEL);
426 if (!rdev)
427 return NULL;
428
429 rdev->ops = ops;
430
431 rdev->wiphy_idx = atomic_inc_return(&wiphy_counter);
432
433 if (unlikely(rdev->wiphy_idx < 0)) {
434
435 atomic_dec(&wiphy_counter);
436 kfree(rdev);
437 return NULL;
438 }
439
440
441 rdev->wiphy_idx--;
442
443
444 if (requested_name && requested_name[0]) {
445 int rv;
446
447 rtnl_lock();
448 rv = cfg80211_dev_check_name(rdev, requested_name);
449
450 if (rv < 0) {
451 rtnl_unlock();
452 goto use_default_name;
453 }
454
455 rv = dev_set_name(&rdev->wiphy.dev, "%s", requested_name);
456 rtnl_unlock();
457 if (rv)
458 goto use_default_name;
459 } else {
460 int rv;
461
462use_default_name:
463
464
465
466
467
468
469 rv = dev_set_name(&rdev->wiphy.dev, PHY_NAME "%d", rdev->wiphy_idx);
470 if (rv < 0) {
471 kfree(rdev);
472 return NULL;
473 }
474 }
475
476 INIT_LIST_HEAD(&rdev->wiphy.wdev_list);
477 INIT_LIST_HEAD(&rdev->beacon_registrations);
478 spin_lock_init(&rdev->beacon_registrations_lock);
479 spin_lock_init(&rdev->bss_lock);
480 INIT_LIST_HEAD(&rdev->bss_list);
481 INIT_LIST_HEAD(&rdev->sched_scan_req_list);
482 INIT_WORK(&rdev->scan_done_wk, __cfg80211_scan_done);
483 INIT_LIST_HEAD(&rdev->mlme_unreg);
484 spin_lock_init(&rdev->mlme_unreg_lock);
485 INIT_WORK(&rdev->mlme_unreg_wk, cfg80211_mlme_unreg_wk);
486 INIT_DELAYED_WORK(&rdev->dfs_update_channels_wk,
487 cfg80211_dfs_channels_update_work);
488#ifdef CONFIG_CFG80211_WEXT
489 rdev->wiphy.wext = &cfg80211_wext_handler;
490#endif
491
492 device_initialize(&rdev->wiphy.dev);
493 rdev->wiphy.dev.class = &ieee80211_class;
494 rdev->wiphy.dev.platform_data = rdev;
495 device_enable_async_suspend(&rdev->wiphy.dev);
496
497 INIT_WORK(&rdev->destroy_work, cfg80211_destroy_iface_wk);
498 INIT_WORK(&rdev->sched_scan_stop_wk, cfg80211_sched_scan_stop_wk);
499 INIT_WORK(&rdev->sched_scan_res_wk, cfg80211_sched_scan_results_wk);
500 INIT_WORK(&rdev->propagate_radar_detect_wk,
501 cfg80211_propagate_radar_detect_wk);
502 INIT_WORK(&rdev->propagate_cac_done_wk, cfg80211_propagate_cac_done_wk);
503
504#ifdef CONFIG_CFG80211_DEFAULT_PS
505 rdev->wiphy.flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
506#endif
507
508 wiphy_net_set(&rdev->wiphy, &init_net);
509
510 rdev->rfkill_ops.set_block = cfg80211_rfkill_set_block;
511 rdev->rfkill = rfkill_alloc(dev_name(&rdev->wiphy.dev),
512 &rdev->wiphy.dev, RFKILL_TYPE_WLAN,
513 &rdev->rfkill_ops, rdev);
514
515 if (!rdev->rfkill) {
516 wiphy_free(&rdev->wiphy);
517 return NULL;
518 }
519
520 INIT_WORK(&rdev->rfkill_block, cfg80211_rfkill_block_work);
521 INIT_WORK(&rdev->conn_work, cfg80211_conn_work);
522 INIT_WORK(&rdev->event_work, cfg80211_event_work);
523
524 init_waitqueue_head(&rdev->dev_wait);
525
526
527
528
529
530
531 rdev->wiphy.retry_short = 7;
532 rdev->wiphy.retry_long = 4;
533 rdev->wiphy.frag_threshold = (u32) -1;
534 rdev->wiphy.rts_threshold = (u32) -1;
535 rdev->wiphy.coverage_class = 0;
536
537 rdev->wiphy.max_num_csa_counters = 1;
538
539 rdev->wiphy.max_sched_scan_plans = 1;
540 rdev->wiphy.max_sched_scan_plan_interval = U32_MAX;
541
542 return &rdev->wiphy;
543}
544EXPORT_SYMBOL(wiphy_new_nm);
545
546static int wiphy_verify_combinations(struct wiphy *wiphy)
547{
548 const struct ieee80211_iface_combination *c;
549 int i, j;
550
551 for (i = 0; i < wiphy->n_iface_combinations; i++) {
552 u32 cnt = 0;
553 u16 all_iftypes = 0;
554
555 c = &wiphy->iface_combinations[i];
556
557
558
559
560
561 if (WARN_ON((c->max_interfaces < 2) && !c->radar_detect_widths))
562 return -EINVAL;
563
564
565 if (WARN_ON(!c->num_different_channels))
566 return -EINVAL;
567
568
569
570
571
572 if (WARN_ON(c->num_different_channels >
573 CFG80211_MAX_NUM_DIFFERENT_CHANNELS))
574 return -EINVAL;
575
576
577 if (WARN_ON(c->radar_detect_widths &&
578 (c->num_different_channels > 1)))
579 return -EINVAL;
580
581 if (WARN_ON(!c->n_limits))
582 return -EINVAL;
583
584 for (j = 0; j < c->n_limits; j++) {
585 u16 types = c->limits[j].types;
586
587
588 if (WARN_ON(types & all_iftypes))
589 return -EINVAL;
590 all_iftypes |= types;
591
592 if (WARN_ON(!c->limits[j].max))
593 return -EINVAL;
594
595
596 if (WARN_ON(wiphy->software_iftypes & types))
597 return -EINVAL;
598
599
600 if (WARN_ON(types & BIT(NL80211_IFTYPE_P2P_DEVICE) &&
601 c->limits[j].max > 1))
602 return -EINVAL;
603
604
605 if (WARN_ON(types & BIT(NL80211_IFTYPE_NAN) &&
606 c->limits[j].max > 1))
607 return -EINVAL;
608
609
610
611
612
613
614
615
616
617
618
619 if (WARN_ON(types & BIT(NL80211_IFTYPE_ADHOC) &&
620 c->beacon_int_min_gcd)) {
621 return -EINVAL;
622 }
623
624 cnt += c->limits[j].max;
625
626
627
628
629 if (WARN_ON((wiphy->interface_modes & types) != types))
630 return -EINVAL;
631 }
632
633#ifndef CONFIG_WIRELESS_WDS
634 if (WARN_ON(all_iftypes & BIT(NL80211_IFTYPE_WDS)))
635 return -EINVAL;
636#endif
637
638
639 if (WARN_ON(cnt < c->max_interfaces))
640 return -EINVAL;
641 }
642
643 return 0;
644}
645
646int wiphy_register(struct wiphy *wiphy)
647{
648 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
649 int res;
650 enum nl80211_band band;
651 struct ieee80211_supported_band *sband;
652 bool have_band = false;
653 int i;
654 u16 ifmodes = wiphy->interface_modes;
655
656#ifdef CONFIG_PM
657 if (WARN_ON(wiphy->wowlan &&
658 (wiphy->wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
659 !(wiphy->wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY)))
660 return -EINVAL;
661 if (WARN_ON(wiphy->wowlan &&
662 !wiphy->wowlan->flags && !wiphy->wowlan->n_patterns &&
663 !wiphy->wowlan->tcp))
664 return -EINVAL;
665#endif
666 if (WARN_ON((wiphy->features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH) &&
667 (!rdev->ops->tdls_channel_switch ||
668 !rdev->ops->tdls_cancel_channel_switch)))
669 return -EINVAL;
670
671 if (WARN_ON((wiphy->interface_modes & BIT(NL80211_IFTYPE_NAN)) &&
672 (!rdev->ops->start_nan || !rdev->ops->stop_nan ||
673 !rdev->ops->add_nan_func || !rdev->ops->del_nan_func ||
674 !(wiphy->nan_supported_bands & BIT(NL80211_BAND_2GHZ)))))
675 return -EINVAL;
676
677#ifndef CONFIG_WIRELESS_WDS
678 if (WARN_ON(wiphy->interface_modes & BIT(NL80211_IFTYPE_WDS)))
679 return -EINVAL;
680#endif
681
682 if (WARN_ON(wiphy->pmsr_capa && !wiphy->pmsr_capa->ftm.supported))
683 return -EINVAL;
684
685 if (wiphy->pmsr_capa && wiphy->pmsr_capa->ftm.supported) {
686 if (WARN_ON(!wiphy->pmsr_capa->ftm.asap &&
687 !wiphy->pmsr_capa->ftm.non_asap))
688 return -EINVAL;
689 if (WARN_ON(!wiphy->pmsr_capa->ftm.preambles ||
690 !wiphy->pmsr_capa->ftm.bandwidths))
691 return -EINVAL;
692 if (WARN_ON(wiphy->pmsr_capa->ftm.preambles &
693 ~(BIT(NL80211_PREAMBLE_LEGACY) |
694 BIT(NL80211_PREAMBLE_HT) |
695 BIT(NL80211_PREAMBLE_VHT) |
696 BIT(NL80211_PREAMBLE_DMG))))
697 return -EINVAL;
698 if (WARN_ON(wiphy->pmsr_capa->ftm.bandwidths &
699 ~(BIT(NL80211_CHAN_WIDTH_20_NOHT) |
700 BIT(NL80211_CHAN_WIDTH_20) |
701 BIT(NL80211_CHAN_WIDTH_40) |
702 BIT(NL80211_CHAN_WIDTH_80) |
703 BIT(NL80211_CHAN_WIDTH_80P80) |
704 BIT(NL80211_CHAN_WIDTH_160) |
705 BIT(NL80211_CHAN_WIDTH_5) |
706 BIT(NL80211_CHAN_WIDTH_10))))
707 return -EINVAL;
708 }
709
710
711
712
713
714 if (wiphy->interface_modes & ~(BIT(NL80211_IFTYPE_STATION) |
715 BIT(NL80211_IFTYPE_P2P_CLIENT) |
716 BIT(NL80211_IFTYPE_AP) |
717 BIT(NL80211_IFTYPE_P2P_GO) |
718 BIT(NL80211_IFTYPE_ADHOC) |
719 BIT(NL80211_IFTYPE_P2P_DEVICE) |
720 BIT(NL80211_IFTYPE_NAN) |
721 BIT(NL80211_IFTYPE_AP_VLAN) |
722 BIT(NL80211_IFTYPE_MONITOR)))
723 wiphy->regulatory_flags |= REGULATORY_IGNORE_STALE_KICKOFF;
724
725 if (WARN_ON((wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED) &&
726 (wiphy->regulatory_flags &
727 (REGULATORY_CUSTOM_REG |
728 REGULATORY_STRICT_REG |
729 REGULATORY_COUNTRY_IE_FOLLOW_POWER |
730 REGULATORY_COUNTRY_IE_IGNORE))))
731 return -EINVAL;
732
733 if (WARN_ON(wiphy->coalesce &&
734 (!wiphy->coalesce->n_rules ||
735 !wiphy->coalesce->n_patterns) &&
736 (!wiphy->coalesce->pattern_min_len ||
737 wiphy->coalesce->pattern_min_len >
738 wiphy->coalesce->pattern_max_len)))
739 return -EINVAL;
740
741 if (WARN_ON(wiphy->ap_sme_capa &&
742 !(wiphy->flags & WIPHY_FLAG_HAVE_AP_SME)))
743 return -EINVAL;
744
745 if (WARN_ON(wiphy->addresses && !wiphy->n_addresses))
746 return -EINVAL;
747
748 if (WARN_ON(wiphy->addresses &&
749 !is_zero_ether_addr(wiphy->perm_addr) &&
750 memcmp(wiphy->perm_addr, wiphy->addresses[0].addr,
751 ETH_ALEN)))
752 return -EINVAL;
753
754 if (WARN_ON(wiphy->max_acl_mac_addrs &&
755 (!(wiphy->flags & WIPHY_FLAG_HAVE_AP_SME) ||
756 !rdev->ops->set_mac_acl)))
757 return -EINVAL;
758
759
760
761
762 if (WARN_ON(wiphy->bss_select_support &&
763 (wiphy->bss_select_support & ~(BIT(__NL80211_BSS_SELECT_ATTR_AFTER_LAST) - 2))))
764 return -EINVAL;
765
766 if (WARN_ON(wiphy_ext_feature_isset(&rdev->wiphy,
767 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X) &&
768 (!rdev->ops->set_pmk || !rdev->ops->del_pmk)))
769 return -EINVAL;
770
771 if (WARN_ON(!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
772 rdev->ops->update_connect_params))
773 return -EINVAL;
774
775 if (wiphy->addresses)
776 memcpy(wiphy->perm_addr, wiphy->addresses[0].addr, ETH_ALEN);
777
778
779 WARN_ON(!ifmodes);
780 ifmodes &= ((1 << NUM_NL80211_IFTYPES) - 1) & ~1;
781 if (WARN_ON(ifmodes != wiphy->interface_modes))
782 wiphy->interface_modes = ifmodes;
783
784 res = wiphy_verify_combinations(wiphy);
785 if (res)
786 return res;
787
788
789 for (band = 0; band < NUM_NL80211_BANDS; band++) {
790 u16 types = 0;
791
792 sband = wiphy->bands[band];
793 if (!sband)
794 continue;
795
796 sband->band = band;
797 if (WARN_ON(!sband->n_channels))
798 return -EINVAL;
799
800
801
802
803 if (WARN_ON(band != NL80211_BAND_60GHZ &&
804 !sband->n_bitrates))
805 return -EINVAL;
806
807
808
809
810
811
812 if (cfg80211_disable_40mhz_24ghz &&
813 band == NL80211_BAND_2GHZ &&
814 sband->ht_cap.ht_supported) {
815 sband->ht_cap.cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
816 sband->ht_cap.cap &= ~IEEE80211_HT_CAP_SGI_40;
817 }
818
819
820
821
822
823
824 if (WARN_ON(sband->n_bitrates > 32))
825 return -EINVAL;
826
827 for (i = 0; i < sband->n_channels; i++) {
828 sband->channels[i].orig_flags =
829 sband->channels[i].flags;
830 sband->channels[i].orig_mag = INT_MAX;
831 sband->channels[i].orig_mpwr =
832 sband->channels[i].max_power;
833 sband->channels[i].band = band;
834 }
835
836 for (i = 0; i < sband->n_iftype_data; i++) {
837 const struct ieee80211_sband_iftype_data *iftd;
838
839 iftd = &sband->iftype_data[i];
840
841 if (WARN_ON(!iftd->types_mask))
842 return -EINVAL;
843 if (WARN_ON(types & iftd->types_mask))
844 return -EINVAL;
845
846
847 if (WARN_ON(!iftd->he_cap.has_he))
848 return -EINVAL;
849
850 types |= iftd->types_mask;
851 }
852
853 have_band = true;
854 }
855
856 if (!have_band) {
857 WARN_ON(1);
858 return -EINVAL;
859 }
860
861 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
862
863
864
865
866
867 if (WARN_ON(!rdev->wiphy.vendor_commands[i].policy))
868 return -EINVAL;
869 if (WARN_ON(!rdev->wiphy.vendor_commands[i].doit &&
870 !rdev->wiphy.vendor_commands[i].dumpit))
871 return -EINVAL;
872 }
873
874#ifdef CONFIG_PM
875 if (WARN_ON(rdev->wiphy.wowlan && rdev->wiphy.wowlan->n_patterns &&
876 (!rdev->wiphy.wowlan->pattern_min_len ||
877 rdev->wiphy.wowlan->pattern_min_len >
878 rdev->wiphy.wowlan->pattern_max_len)))
879 return -EINVAL;
880#endif
881
882
883 ieee80211_set_bitrate_flags(wiphy);
884
885 rdev->wiphy.features |= NL80211_FEATURE_SCAN_FLUSH;
886
887 rtnl_lock();
888 res = device_add(&rdev->wiphy.dev);
889 if (res) {
890 rtnl_unlock();
891 return res;
892 }
893
894
895 wiphy_regulatory_register(wiphy);
896
897 list_add_rcu(&rdev->list, &cfg80211_rdev_list);
898 cfg80211_rdev_list_generation++;
899
900
901 rdev->wiphy.debugfsdir = debugfs_create_dir(wiphy_name(&rdev->wiphy),
902 ieee80211_debugfs_dir);
903
904 cfg80211_debugfs_rdev_add(rdev);
905 nl80211_notify_wiphy(rdev, NL80211_CMD_NEW_WIPHY);
906
907 if (wiphy->regulatory_flags & REGULATORY_CUSTOM_REG) {
908 struct regulatory_request request;
909
910 request.wiphy_idx = get_wiphy_idx(wiphy);
911 request.initiator = NL80211_REGDOM_SET_BY_DRIVER;
912 request.alpha2[0] = '9';
913 request.alpha2[1] = '9';
914
915 nl80211_send_reg_change_event(&request);
916 }
917
918
919
920
921 if (wiphy->extended_capabilities_len &&
922 wiphy->num_iftype_ext_capab &&
923 wiphy->iftype_ext_capab) {
924 u8 supported_on_all, j;
925 const struct wiphy_iftype_ext_capab *capab;
926
927 capab = wiphy->iftype_ext_capab;
928 for (j = 0; j < wiphy->extended_capabilities_len; j++) {
929 if (capab[0].extended_capabilities_len > j)
930 supported_on_all =
931 capab[0].extended_capabilities[j];
932 else
933 supported_on_all = 0x00;
934 for (i = 1; i < wiphy->num_iftype_ext_capab; i++) {
935 if (j >= capab[i].extended_capabilities_len) {
936 supported_on_all = 0x00;
937 break;
938 }
939 supported_on_all &=
940 capab[i].extended_capabilities[j];
941 }
942 if (WARN_ON(wiphy->extended_capabilities[j] &
943 ~supported_on_all))
944 break;
945 }
946 }
947
948 rdev->wiphy.registered = true;
949 rtnl_unlock();
950
951 res = rfkill_register(rdev->rfkill);
952 if (res) {
953 rfkill_destroy(rdev->rfkill);
954 rdev->rfkill = NULL;
955 wiphy_unregister(&rdev->wiphy);
956 return res;
957 }
958
959 return 0;
960}
961EXPORT_SYMBOL(wiphy_register);
962
963void wiphy_rfkill_start_polling(struct wiphy *wiphy)
964{
965 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
966
967 if (!rdev->ops->rfkill_poll)
968 return;
969 rdev->rfkill_ops.poll = cfg80211_rfkill_poll;
970 rfkill_resume_polling(rdev->rfkill);
971}
972EXPORT_SYMBOL(wiphy_rfkill_start_polling);
973
974void wiphy_rfkill_stop_polling(struct wiphy *wiphy)
975{
976 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
977
978 rfkill_pause_polling(rdev->rfkill);
979}
980EXPORT_SYMBOL(wiphy_rfkill_stop_polling);
981
982void wiphy_unregister(struct wiphy *wiphy)
983{
984 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
985
986 wait_event(rdev->dev_wait, ({
987 int __count;
988 rtnl_lock();
989 __count = rdev->opencount;
990 rtnl_unlock();
991 __count == 0; }));
992
993 if (rdev->rfkill)
994 rfkill_unregister(rdev->rfkill);
995
996 rtnl_lock();
997 nl80211_notify_wiphy(rdev, NL80211_CMD_DEL_WIPHY);
998 rdev->wiphy.registered = false;
999
1000 WARN_ON(!list_empty(&rdev->wiphy.wdev_list));
1001
1002
1003
1004
1005
1006 debugfs_remove_recursive(rdev->wiphy.debugfsdir);
1007 list_del_rcu(&rdev->list);
1008 synchronize_rcu();
1009
1010
1011
1012
1013
1014 wiphy_regulatory_deregister(wiphy);
1015
1016 cfg80211_rdev_list_generation++;
1017 device_del(&rdev->wiphy.dev);
1018
1019 rtnl_unlock();
1020
1021 flush_work(&rdev->scan_done_wk);
1022 cancel_work_sync(&rdev->conn_work);
1023 flush_work(&rdev->event_work);
1024 cancel_delayed_work_sync(&rdev->dfs_update_channels_wk);
1025 flush_work(&rdev->destroy_work);
1026 flush_work(&rdev->sched_scan_stop_wk);
1027 flush_work(&rdev->mlme_unreg_wk);
1028 flush_work(&rdev->propagate_radar_detect_wk);
1029 flush_work(&rdev->propagate_cac_done_wk);
1030
1031#ifdef CONFIG_PM
1032 if (rdev->wiphy.wowlan_config && rdev->ops->set_wakeup)
1033 rdev_set_wakeup(rdev, false);
1034#endif
1035 cfg80211_rdev_free_wowlan(rdev);
1036 cfg80211_rdev_free_coalesce(rdev);
1037}
1038EXPORT_SYMBOL(wiphy_unregister);
1039
1040void cfg80211_dev_free(struct cfg80211_registered_device *rdev)
1041{
1042 struct cfg80211_internal_bss *scan, *tmp;
1043 struct cfg80211_beacon_registration *reg, *treg;
1044 rfkill_destroy(rdev->rfkill);
1045 list_for_each_entry_safe(reg, treg, &rdev->beacon_registrations, list) {
1046 list_del(®->list);
1047 kfree(reg);
1048 }
1049 list_for_each_entry_safe(scan, tmp, &rdev->bss_list, list)
1050 cfg80211_put_bss(&rdev->wiphy, &scan->pub);
1051 kfree(rdev);
1052}
1053
1054void wiphy_free(struct wiphy *wiphy)
1055{
1056 put_device(&wiphy->dev);
1057}
1058EXPORT_SYMBOL(wiphy_free);
1059
1060void wiphy_rfkill_set_hw_state(struct wiphy *wiphy, bool blocked)
1061{
1062 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
1063
1064 if (rfkill_set_hw_state(rdev->rfkill, blocked))
1065 schedule_work(&rdev->rfkill_block);
1066}
1067EXPORT_SYMBOL(wiphy_rfkill_set_hw_state);
1068
1069void cfg80211_cqm_config_free(struct wireless_dev *wdev)
1070{
1071 kfree(wdev->cqm_config);
1072 wdev->cqm_config = NULL;
1073}
1074
1075static void __cfg80211_unregister_wdev(struct wireless_dev *wdev, bool sync)
1076{
1077 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1078
1079 ASSERT_RTNL();
1080
1081 flush_work(&wdev->pmsr_free_wk);
1082
1083 nl80211_notify_iface(rdev, wdev, NL80211_CMD_DEL_INTERFACE);
1084
1085 list_del_rcu(&wdev->list);
1086 if (sync)
1087 synchronize_rcu();
1088 rdev->devlist_generation++;
1089
1090 cfg80211_mlme_purge_registrations(wdev);
1091
1092 switch (wdev->iftype) {
1093 case NL80211_IFTYPE_P2P_DEVICE:
1094 cfg80211_stop_p2p_device(rdev, wdev);
1095 break;
1096 case NL80211_IFTYPE_NAN:
1097 cfg80211_stop_nan(rdev, wdev);
1098 break;
1099 default:
1100 break;
1101 }
1102
1103#ifdef CONFIG_CFG80211_WEXT
1104 kzfree(wdev->wext.keys);
1105#endif
1106
1107 if (wdev->netdev)
1108 flush_work(&wdev->disconnect_wk);
1109
1110 cfg80211_cqm_config_free(wdev);
1111}
1112
1113void cfg80211_unregister_wdev(struct wireless_dev *wdev)
1114{
1115 if (WARN_ON(wdev->netdev))
1116 return;
1117
1118 __cfg80211_unregister_wdev(wdev, true);
1119}
1120EXPORT_SYMBOL(cfg80211_unregister_wdev);
1121
1122static const struct device_type wiphy_type = {
1123 .name = "wlan",
1124};
1125
1126void cfg80211_update_iface_num(struct cfg80211_registered_device *rdev,
1127 enum nl80211_iftype iftype, int num)
1128{
1129 ASSERT_RTNL();
1130
1131 rdev->num_running_ifaces += num;
1132 if (iftype == NL80211_IFTYPE_MONITOR)
1133 rdev->num_running_monitor_ifaces += num;
1134}
1135
1136void __cfg80211_leave(struct cfg80211_registered_device *rdev,
1137 struct wireless_dev *wdev)
1138{
1139 struct net_device *dev = wdev->netdev;
1140 struct cfg80211_sched_scan_request *pos, *tmp;
1141
1142 ASSERT_RTNL();
1143 ASSERT_WDEV_LOCK(wdev);
1144
1145 cfg80211_pmsr_wdev_down(wdev);
1146
1147 switch (wdev->iftype) {
1148 case NL80211_IFTYPE_ADHOC:
1149 __cfg80211_leave_ibss(rdev, dev, true);
1150 break;
1151 case NL80211_IFTYPE_P2P_CLIENT:
1152 case NL80211_IFTYPE_STATION:
1153 list_for_each_entry_safe(pos, tmp, &rdev->sched_scan_req_list,
1154 list) {
1155 if (dev == pos->dev)
1156 cfg80211_stop_sched_scan_req(rdev, pos, false);
1157 }
1158
1159#ifdef CONFIG_CFG80211_WEXT
1160 kfree(wdev->wext.ie);
1161 wdev->wext.ie = NULL;
1162 wdev->wext.ie_len = 0;
1163 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
1164#endif
1165 cfg80211_disconnect(rdev, dev,
1166 WLAN_REASON_DEAUTH_LEAVING, true);
1167 break;
1168 case NL80211_IFTYPE_MESH_POINT:
1169 __cfg80211_leave_mesh(rdev, dev);
1170 break;
1171 case NL80211_IFTYPE_AP:
1172 case NL80211_IFTYPE_P2P_GO:
1173 __cfg80211_stop_ap(rdev, dev, true);
1174 break;
1175 case NL80211_IFTYPE_OCB:
1176 __cfg80211_leave_ocb(rdev, dev);
1177 break;
1178 case NL80211_IFTYPE_WDS:
1179
1180 break;
1181 case NL80211_IFTYPE_P2P_DEVICE:
1182 case NL80211_IFTYPE_NAN:
1183
1184 break;
1185 case NL80211_IFTYPE_AP_VLAN:
1186 case NL80211_IFTYPE_MONITOR:
1187
1188 break;
1189 case NL80211_IFTYPE_UNSPECIFIED:
1190 case NUM_NL80211_IFTYPES:
1191
1192 break;
1193 }
1194}
1195
1196void cfg80211_leave(struct cfg80211_registered_device *rdev,
1197 struct wireless_dev *wdev)
1198{
1199 wdev_lock(wdev);
1200 __cfg80211_leave(rdev, wdev);
1201 wdev_unlock(wdev);
1202}
1203
1204void cfg80211_stop_iface(struct wiphy *wiphy, struct wireless_dev *wdev,
1205 gfp_t gfp)
1206{
1207 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
1208 struct cfg80211_event *ev;
1209 unsigned long flags;
1210
1211 trace_cfg80211_stop_iface(wiphy, wdev);
1212
1213 ev = kzalloc(sizeof(*ev), gfp);
1214 if (!ev)
1215 return;
1216
1217 ev->type = EVENT_STOPPED;
1218
1219 spin_lock_irqsave(&wdev->event_lock, flags);
1220 list_add_tail(&ev->list, &wdev->event_list);
1221 spin_unlock_irqrestore(&wdev->event_lock, flags);
1222 queue_work(cfg80211_wq, &rdev->event_work);
1223}
1224EXPORT_SYMBOL(cfg80211_stop_iface);
1225
1226void cfg80211_init_wdev(struct cfg80211_registered_device *rdev,
1227 struct wireless_dev *wdev)
1228{
1229 mutex_init(&wdev->mtx);
1230 INIT_LIST_HEAD(&wdev->event_list);
1231 spin_lock_init(&wdev->event_lock);
1232 INIT_LIST_HEAD(&wdev->mgmt_registrations);
1233 spin_lock_init(&wdev->mgmt_registrations_lock);
1234 INIT_LIST_HEAD(&wdev->pmsr_list);
1235 spin_lock_init(&wdev->pmsr_lock);
1236 INIT_WORK(&wdev->pmsr_free_wk, cfg80211_pmsr_free_wk);
1237
1238
1239
1240
1241
1242
1243
1244
1245 if (!wdev->identifier)
1246 wdev->identifier = ++rdev->wdev_id;
1247 list_add_rcu(&wdev->list, &rdev->wiphy.wdev_list);
1248 rdev->devlist_generation++;
1249
1250 nl80211_notify_iface(rdev, wdev, NL80211_CMD_NEW_INTERFACE);
1251}
1252
1253static int cfg80211_netdev_notifier_call(struct notifier_block *nb,
1254 unsigned long state, void *ptr)
1255{
1256 struct net_device *dev = netdev_notifier_info_to_dev(ptr);
1257 struct wireless_dev *wdev = dev->ieee80211_ptr;
1258 struct cfg80211_registered_device *rdev;
1259 struct cfg80211_sched_scan_request *pos, *tmp;
1260
1261 if (!wdev)
1262 return NOTIFY_DONE;
1263
1264 rdev = wiphy_to_rdev(wdev->wiphy);
1265
1266 WARN_ON(wdev->iftype == NL80211_IFTYPE_UNSPECIFIED);
1267
1268 switch (state) {
1269 case NETDEV_POST_INIT:
1270 SET_NETDEV_DEVTYPE(dev, &wiphy_type);
1271 break;
1272 case NETDEV_REGISTER:
1273
1274
1275
1276
1277
1278
1279 dev->features |= NETIF_F_NETNS_LOCAL;
1280
1281 if (sysfs_create_link(&dev->dev.kobj, &rdev->wiphy.dev.kobj,
1282 "phy80211")) {
1283 pr_err("failed to add phy80211 symlink to netdev!\n");
1284 }
1285 wdev->netdev = dev;
1286#ifdef CONFIG_CFG80211_WEXT
1287 wdev->wext.default_key = -1;
1288 wdev->wext.default_mgmt_key = -1;
1289 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
1290#endif
1291
1292 if (wdev->wiphy->flags & WIPHY_FLAG_PS_ON_BY_DEFAULT)
1293 wdev->ps = true;
1294 else
1295 wdev->ps = false;
1296
1297 wdev->ps_timeout = -1;
1298
1299 if ((wdev->iftype == NL80211_IFTYPE_STATION ||
1300 wdev->iftype == NL80211_IFTYPE_P2P_CLIENT ||
1301 wdev->iftype == NL80211_IFTYPE_ADHOC) && !wdev->use_4addr)
1302 dev->priv_flags |= IFF_DONT_BRIDGE;
1303
1304 INIT_WORK(&wdev->disconnect_wk, cfg80211_autodisconnect_wk);
1305
1306 cfg80211_init_wdev(rdev, wdev);
1307 break;
1308 case NETDEV_GOING_DOWN:
1309 cfg80211_leave(rdev, wdev);
1310 break;
1311 case NETDEV_DOWN:
1312 cfg80211_update_iface_num(rdev, wdev->iftype, -1);
1313 if (rdev->scan_req && rdev->scan_req->wdev == wdev) {
1314 if (WARN_ON(!rdev->scan_req->notified))
1315 rdev->scan_req->info.aborted = true;
1316 ___cfg80211_scan_done(rdev, false);
1317 }
1318
1319 list_for_each_entry_safe(pos, tmp,
1320 &rdev->sched_scan_req_list, list) {
1321 if (WARN_ON(pos->dev == wdev->netdev))
1322 cfg80211_stop_sched_scan_req(rdev, pos, false);
1323 }
1324
1325 rdev->opencount--;
1326 wake_up(&rdev->dev_wait);
1327 break;
1328 case NETDEV_UP:
1329 cfg80211_update_iface_num(rdev, wdev->iftype, 1);
1330 wdev_lock(wdev);
1331 switch (wdev->iftype) {
1332#ifdef CONFIG_CFG80211_WEXT
1333 case NL80211_IFTYPE_ADHOC:
1334 cfg80211_ibss_wext_join(rdev, wdev);
1335 break;
1336 case NL80211_IFTYPE_STATION:
1337 cfg80211_mgd_wext_connect(rdev, wdev);
1338 break;
1339#endif
1340#ifdef CONFIG_MAC80211_MESH
1341 case NL80211_IFTYPE_MESH_POINT:
1342 {
1343
1344 struct mesh_setup setup;
1345 memcpy(&setup, &default_mesh_setup,
1346 sizeof(setup));
1347
1348 setup.mesh_id = wdev->ssid;
1349 setup.mesh_id_len = wdev->mesh_id_up_len;
1350 if (wdev->mesh_id_up_len)
1351 __cfg80211_join_mesh(rdev, dev,
1352 &setup,
1353 &default_mesh_config);
1354 break;
1355 }
1356#endif
1357 default:
1358 break;
1359 }
1360 wdev_unlock(wdev);
1361 rdev->opencount++;
1362
1363
1364
1365
1366
1367 if ((wdev->iftype == NL80211_IFTYPE_STATION ||
1368 wdev->iftype == NL80211_IFTYPE_P2P_CLIENT) &&
1369 rdev->ops->set_power_mgmt &&
1370 rdev_set_power_mgmt(rdev, dev, wdev->ps,
1371 wdev->ps_timeout)) {
1372
1373 wdev->ps = false;
1374 }
1375 break;
1376 case NETDEV_UNREGISTER:
1377
1378
1379
1380
1381
1382
1383
1384 if (!list_empty(&wdev->list)) {
1385 __cfg80211_unregister_wdev(wdev, false);
1386 sysfs_remove_link(&dev->dev.kobj, "phy80211");
1387 }
1388
1389
1390
1391
1392
1393
1394 synchronize_rcu();
1395 INIT_LIST_HEAD(&wdev->list);
1396
1397
1398
1399
1400 cfg80211_process_wdev_events(wdev);
1401
1402 if (WARN_ON(wdev->current_bss)) {
1403 cfg80211_unhold_bss(wdev->current_bss);
1404 cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub);
1405 wdev->current_bss = NULL;
1406 }
1407 break;
1408 case NETDEV_PRE_UP:
1409 if (!cfg80211_iftype_allowed(wdev->wiphy, wdev->iftype,
1410 wdev->use_4addr, 0))
1411 return notifier_from_errno(-EOPNOTSUPP);
1412
1413 if (rfkill_blocked(rdev->rfkill))
1414 return notifier_from_errno(-ERFKILL);
1415 break;
1416 default:
1417 return NOTIFY_DONE;
1418 }
1419
1420 wireless_nlevent_flush();
1421
1422 return NOTIFY_OK;
1423}
1424
1425static struct notifier_block cfg80211_netdev_notifier = {
1426 .notifier_call = cfg80211_netdev_notifier_call,
1427};
1428
1429static void __net_exit cfg80211_pernet_exit(struct net *net)
1430{
1431 struct cfg80211_registered_device *rdev;
1432
1433 rtnl_lock();
1434 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
1435 if (net_eq(wiphy_net(&rdev->wiphy), net))
1436 WARN_ON(cfg80211_switch_netns(rdev, &init_net));
1437 }
1438 rtnl_unlock();
1439}
1440
1441static struct pernet_operations cfg80211_pernet_ops = {
1442 .exit = cfg80211_pernet_exit,
1443};
1444
1445static int __init cfg80211_init(void)
1446{
1447 int err;
1448
1449 err = register_pernet_device(&cfg80211_pernet_ops);
1450 if (err)
1451 goto out_fail_pernet;
1452
1453 err = wiphy_sysfs_init();
1454 if (err)
1455 goto out_fail_sysfs;
1456
1457 err = register_netdevice_notifier(&cfg80211_netdev_notifier);
1458 if (err)
1459 goto out_fail_notifier;
1460
1461 err = nl80211_init();
1462 if (err)
1463 goto out_fail_nl80211;
1464
1465 ieee80211_debugfs_dir = debugfs_create_dir("ieee80211", NULL);
1466
1467 err = regulatory_init();
1468 if (err)
1469 goto out_fail_reg;
1470
1471 cfg80211_wq = alloc_ordered_workqueue("cfg80211", WQ_MEM_RECLAIM);
1472 if (!cfg80211_wq) {
1473 err = -ENOMEM;
1474 goto out_fail_wq;
1475 }
1476
1477 return 0;
1478
1479out_fail_wq:
1480 regulatory_exit();
1481out_fail_reg:
1482 debugfs_remove(ieee80211_debugfs_dir);
1483 nl80211_exit();
1484out_fail_nl80211:
1485 unregister_netdevice_notifier(&cfg80211_netdev_notifier);
1486out_fail_notifier:
1487 wiphy_sysfs_exit();
1488out_fail_sysfs:
1489 unregister_pernet_device(&cfg80211_pernet_ops);
1490out_fail_pernet:
1491 return err;
1492}
1493fs_initcall(cfg80211_init);
1494
1495static void __exit cfg80211_exit(void)
1496{
1497 debugfs_remove(ieee80211_debugfs_dir);
1498 nl80211_exit();
1499 unregister_netdevice_notifier(&cfg80211_netdev_notifier);
1500 wiphy_sysfs_exit();
1501 regulatory_exit();
1502 unregister_pernet_device(&cfg80211_pernet_ops);
1503 destroy_workqueue(cfg80211_wq);
1504}
1505module_exit(cfg80211_exit);
1506
