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1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Copyright 2002-2005, Instant802 Networks, Inc.
4 * Copyright 2005-2006, Devicescape Software, Inc.
5 * Copyright 2006-2007 Jiri Benc <[email protected]>
6 * Copyright 2013-2014 Intel Mobile Communications GmbH
7 * Copyright (C) 2017 Intel Deutschland GmbH
8 * Copyright (C) 2018-2026 Intel Corporation
9 */
10
11#include <net/mac80211.h>
12#include <linux/module.h>
13#include <linux/fips.h>
14#include <linux/init.h>
15#include <linux/netdevice.h>
16#include <linux/types.h>
17#include <linux/slab.h>
18#include <linux/skbuff.h>
19#include <linux/etherdevice.h>
20#include <linux/if_arp.h>
21#include <linux/rtnetlink.h>
22#include <linux/bitmap.h>
23#include <linux/inetdevice.h>
24#include <net/net_namespace.h>
25#include <net/dropreason.h>
26#include <net/cfg80211.h>
27#include <net/addrconf.h>
28
29#include "ieee80211_i.h"
30#include "driver-ops.h"
31#include "rate.h"
32#include "mesh.h"
33#include "wep.h"
34#include "led.h"
35#include "debugfs.h"
36
37void ieee80211_configure_filter(struct ieee80211_local *local)
38{
39 u64 mc;
40 unsigned int changed_flags;
41 unsigned int new_flags = 0;
42
43 if (atomic_read(&local->iff_allmultis))
44 new_flags |= FIF_ALLMULTI;
45
46 if (local->monitors || test_bit(SCAN_SW_SCANNING, &local->scanning) ||
47 test_bit(SCAN_ONCHANNEL_SCANNING, &local->scanning))
48 new_flags |= FIF_BCN_PRBRESP_PROMISC;
49
50 if (local->fif_probe_req || local->probe_req_reg)
51 new_flags |= FIF_PROBE_REQ;
52
53 if (local->fif_fcsfail)
54 new_flags |= FIF_FCSFAIL;
55
56 if (local->fif_plcpfail)
57 new_flags |= FIF_PLCPFAIL;
58
59 if (local->fif_control)
60 new_flags |= FIF_CONTROL;
61
62 if (local->fif_other_bss)
63 new_flags |= FIF_OTHER_BSS;
64
65 if (local->fif_pspoll)
66 new_flags |= FIF_PSPOLL;
67
68 if (local->rx_mcast_action_reg)
69 new_flags |= FIF_MCAST_ACTION;
70
71 spin_lock_bh(&local->filter_lock);
72 changed_flags = local->filter_flags ^ new_flags;
73
74 mc = drv_prepare_multicast(local, &local->mc_list);
75 spin_unlock_bh(&local->filter_lock);
76
77 /* be a bit nasty */
78 new_flags |= (1<<31);
79
80 drv_configure_filter(local, changed_flags, &new_flags, mc);
81
82 WARN_ON(new_flags & (1<<31));
83
84 local->filter_flags = new_flags & ~(1<<31);
85}
86
87static void ieee80211_reconfig_filter(struct wiphy *wiphy,
88 struct wiphy_work *work)
89{
90 struct ieee80211_local *local =
91 container_of(work, struct ieee80211_local, reconfig_filter);
92
93 ieee80211_configure_filter(local);
94}
95
96static u32 ieee80211_calc_hw_conf_chan(struct ieee80211_local *local,
97 struct ieee80211_chanctx_conf *ctx)
98{
99 struct ieee80211_sub_if_data *sdata;
100 struct cfg80211_chan_def chandef = {};
101 struct cfg80211_chan_def *oper = NULL;
102 enum ieee80211_smps_mode smps_mode = IEEE80211_SMPS_STATIC;
103 u32 changed = 0;
104 int power;
105 u32 offchannel_flag;
106
107 if (!local->emulate_chanctx)
108 return 0;
109
110 offchannel_flag = local->hw.conf.flags & IEEE80211_CONF_OFFCHANNEL;
111
112 if (ctx && !WARN_ON(!ctx->def.chan)) {
113 oper = &ctx->def;
114 if (ctx->rx_chains_static > 1)
115 smps_mode = IEEE80211_SMPS_OFF;
116 else if (ctx->rx_chains_dynamic > 1)
117 smps_mode = IEEE80211_SMPS_DYNAMIC;
118 else
119 smps_mode = IEEE80211_SMPS_STATIC;
120 }
121
122 if (local->scan_chandef.chan) {
123 chandef = local->scan_chandef;
124 } else if (local->tmp_channel) {
125 chandef.chan = local->tmp_channel;
126 chandef.width = NL80211_CHAN_WIDTH_20_NOHT;
127 chandef.center_freq1 = chandef.chan->center_freq;
128 chandef.freq1_offset = chandef.chan->freq_offset;
129 } else if (oper) {
130 chandef = *oper;
131 } else {
132 chandef = local->dflt_chandef;
133 }
134
135 if (WARN(!cfg80211_chandef_valid(&chandef),
136 "control:%d.%03d MHz width:%d center: %d.%03d/%d MHz",
137 chandef.chan ? chandef.chan->center_freq : -1,
138 chandef.chan ? chandef.chan->freq_offset : 0,
139 chandef.width, chandef.center_freq1, chandef.freq1_offset,
140 chandef.center_freq2))
141 return 0;
142
143 if (!oper || !cfg80211_chandef_identical(&chandef, oper))
144 local->hw.conf.flags |= IEEE80211_CONF_OFFCHANNEL;
145 else
146 local->hw.conf.flags &= ~IEEE80211_CONF_OFFCHANNEL;
147
148 offchannel_flag ^= local->hw.conf.flags & IEEE80211_CONF_OFFCHANNEL;
149
150 /* force it also for scanning, since drivers might config differently */
151 if (offchannel_flag || local->scanning || local->in_reconfig ||
152 !cfg80211_chandef_identical(&local->hw.conf.chandef, &chandef)) {
153 local->hw.conf.chandef = chandef;
154 changed |= IEEE80211_CONF_CHANGE_CHANNEL;
155 }
156
157 if (!conf_is_ht(&local->hw.conf)) {
158 /*
159 * mac80211.h documents that this is only valid
160 * when the channel is set to an HT type, and
161 * that otherwise STATIC is used.
162 */
163 local->hw.conf.smps_mode = IEEE80211_SMPS_STATIC;
164 } else if (local->hw.conf.smps_mode != smps_mode) {
165 local->hw.conf.smps_mode = smps_mode;
166 changed |= IEEE80211_CONF_CHANGE_SMPS;
167 }
168
169 power = ieee80211_chandef_max_power(&chandef);
170 if (local->user_power_level != IEEE80211_UNSET_POWER_LEVEL)
171 power = min(local->user_power_level, power);
172
173 rcu_read_lock();
174 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
175 if (!rcu_access_pointer(sdata->vif.bss_conf.chanctx_conf))
176 continue;
177 if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
178 continue;
179 if (sdata->vif.bss_conf.txpower == INT_MIN)
180 continue;
181 power = min(power, sdata->vif.bss_conf.txpower);
182 }
183 rcu_read_unlock();
184
185 if (local->hw.conf.power_level != power) {
186 changed |= IEEE80211_CONF_CHANGE_POWER;
187 local->hw.conf.power_level = power;
188 }
189
190 return changed;
191}
192
193int ieee80211_hw_config(struct ieee80211_local *local, int radio_idx,
194 u32 changed)
195{
196 int ret = 0;
197
198 might_sleep();
199
200 WARN_ON(changed & (IEEE80211_CONF_CHANGE_CHANNEL |
201 IEEE80211_CONF_CHANGE_POWER |
202 IEEE80211_CONF_CHANGE_SMPS));
203
204 if (changed && local->open_count) {
205 ret = drv_config(local, radio_idx, changed);
206 /*
207 * Goal:
208 * HW reconfiguration should never fail, the driver has told
209 * us what it can support so it should live up to that promise.
210 *
211 * Current status:
212 * rfkill is not integrated with mac80211 and a
213 * configuration command can thus fail if hardware rfkill
214 * is enabled
215 *
216 * FIXME: integrate rfkill with mac80211 and then add this
217 * WARN_ON() back
218 *
219 */
220 /* WARN_ON(ret); */
221 }
222
223 return ret;
224}
225
226/* for scanning, offchannel and chanctx emulation only */
227static int _ieee80211_hw_conf_chan(struct ieee80211_local *local,
228 struct ieee80211_chanctx_conf *ctx)
229{
230 u32 changed;
231
232 if (!local->open_count)
233 return 0;
234
235 changed = ieee80211_calc_hw_conf_chan(local, ctx);
236 if (!changed)
237 return 0;
238
239 return drv_config(local, -1, changed);
240}
241
242int ieee80211_hw_conf_chan(struct ieee80211_local *local)
243{
244 struct ieee80211_chanctx *ctx;
245
246 ctx = list_first_entry_or_null(&local->chanctx_list,
247 struct ieee80211_chanctx,
248 list);
249
250 return _ieee80211_hw_conf_chan(local, ctx ? &ctx->conf : NULL);
251}
252
253void ieee80211_hw_conf_init(struct ieee80211_local *local)
254{
255 u32 changed = ~(IEEE80211_CONF_CHANGE_CHANNEL |
256 IEEE80211_CONF_CHANGE_POWER |
257 IEEE80211_CONF_CHANGE_SMPS);
258
259 if (WARN_ON(!local->open_count))
260 return;
261
262 if (local->emulate_chanctx) {
263 struct ieee80211_chanctx *ctx;
264
265 ctx = list_first_entry_or_null(&local->chanctx_list,
266 struct ieee80211_chanctx,
267 list);
268
269 changed |= ieee80211_calc_hw_conf_chan(local,
270 ctx ? &ctx->conf : NULL);
271 }
272
273 WARN_ON(drv_config(local, -1, changed));
274}
275
276int ieee80211_emulate_add_chanctx(struct ieee80211_hw *hw,
277 struct ieee80211_chanctx_conf *ctx)
278{
279 struct ieee80211_local *local = hw_to_local(hw);
280
281 local->hw.conf.radar_enabled = ctx->radar_enabled;
282
283 return _ieee80211_hw_conf_chan(local, ctx);
284}
285EXPORT_SYMBOL(ieee80211_emulate_add_chanctx);
286
287void ieee80211_emulate_remove_chanctx(struct ieee80211_hw *hw,
288 struct ieee80211_chanctx_conf *ctx)
289{
290 struct ieee80211_local *local = hw_to_local(hw);
291
292 local->hw.conf.radar_enabled = false;
293
294 _ieee80211_hw_conf_chan(local, NULL);
295}
296EXPORT_SYMBOL(ieee80211_emulate_remove_chanctx);
297
298void ieee80211_emulate_change_chanctx(struct ieee80211_hw *hw,
299 struct ieee80211_chanctx_conf *ctx,
300 u32 changed)
301{
302 struct ieee80211_local *local = hw_to_local(hw);
303
304 local->hw.conf.radar_enabled = ctx->radar_enabled;
305
306 _ieee80211_hw_conf_chan(local, ctx);
307}
308EXPORT_SYMBOL(ieee80211_emulate_change_chanctx);
309
310int ieee80211_emulate_switch_vif_chanctx(struct ieee80211_hw *hw,
311 struct ieee80211_vif_chanctx_switch *vifs,
312 int n_vifs,
313 enum ieee80211_chanctx_switch_mode mode)
314{
315 struct ieee80211_local *local = hw_to_local(hw);
316
317 if (n_vifs <= 0)
318 return -EINVAL;
319
320 local->hw.conf.radar_enabled = vifs[0].new_ctx->radar_enabled;
321 _ieee80211_hw_conf_chan(local, vifs[0].new_ctx);
322
323 return 0;
324}
325EXPORT_SYMBOL(ieee80211_emulate_switch_vif_chanctx);
326
327#define BSS_CHANGED_VIF_CFG_FLAGS (BSS_CHANGED_ASSOC |\
328 BSS_CHANGED_IDLE |\
329 BSS_CHANGED_PS |\
330 BSS_CHANGED_IBSS |\
331 BSS_CHANGED_ARP_FILTER |\
332 BSS_CHANGED_SSID |\
333 BSS_CHANGED_MLD_VALID_LINKS |\
334 BSS_CHANGED_MLD_TTLM)
335
336void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
337 u64 changed)
338{
339 struct ieee80211_local *local = sdata->local;
340
341 might_sleep();
342
343 WARN_ON_ONCE(ieee80211_vif_is_mld(&sdata->vif));
344
345 if (!changed || sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
346 return;
347
348 if (WARN_ON_ONCE(changed & (BSS_CHANGED_BEACON |
349 BSS_CHANGED_BEACON_ENABLED) &&
350 sdata->vif.type != NL80211_IFTYPE_AP &&
351 sdata->vif.type != NL80211_IFTYPE_ADHOC &&
352 sdata->vif.type != NL80211_IFTYPE_MESH_POINT &&
353 sdata->vif.type != NL80211_IFTYPE_OCB))
354 return;
355
356 if (WARN_ON_ONCE(sdata->vif.type == NL80211_IFTYPE_P2P_DEVICE ||
357 sdata->vif.type == NL80211_IFTYPE_NAN ||
358 (sdata->vif.type == NL80211_IFTYPE_MONITOR &&
359 changed & ~BSS_CHANGED_TXPOWER)))
360 return;
361
362 if (!check_sdata_in_driver(sdata))
363 return;
364
365 if (changed & BSS_CHANGED_VIF_CFG_FLAGS) {
366 u64 ch = changed & BSS_CHANGED_VIF_CFG_FLAGS;
367
368 trace_drv_vif_cfg_changed(local, sdata, changed);
369 if (local->ops->vif_cfg_changed)
370 local->ops->vif_cfg_changed(&local->hw, &sdata->vif, ch);
371 }
372
373 if (changed & ~BSS_CHANGED_VIF_CFG_FLAGS) {
374 u64 ch = changed & ~BSS_CHANGED_VIF_CFG_FLAGS;
375
376 trace_drv_link_info_changed(local, sdata, &sdata->vif.bss_conf,
377 changed);
378 if (local->ops->link_info_changed)
379 local->ops->link_info_changed(&local->hw, &sdata->vif,
380 &sdata->vif.bss_conf, ch);
381 }
382
383 if (local->ops->bss_info_changed)
384 local->ops->bss_info_changed(&local->hw, &sdata->vif,
385 &sdata->vif.bss_conf, changed);
386 trace_drv_return_void(local);
387}
388
389void ieee80211_vif_cfg_change_notify(struct ieee80211_sub_if_data *sdata,
390 u64 changed)
391{
392 struct ieee80211_local *local = sdata->local;
393
394 WARN_ON_ONCE(changed & ~BSS_CHANGED_VIF_CFG_FLAGS);
395
396 if (!changed || sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
397 return;
398
399 drv_vif_cfg_changed(local, sdata, changed);
400}
401
402void ieee80211_link_info_change_notify(struct ieee80211_sub_if_data *sdata,
403 struct ieee80211_link_data *link,
404 u64 changed)
405{
406 struct ieee80211_local *local = sdata->local;
407
408 WARN_ON_ONCE(changed & BSS_CHANGED_VIF_CFG_FLAGS);
409
410 if (!changed)
411 return;
412
413 switch (sdata->vif.type) {
414 case NL80211_IFTYPE_AP_VLAN:
415 return;
416 case NL80211_IFTYPE_MONITOR:
417 if (!ieee80211_hw_check(&local->hw, WANT_MONITOR_VIF))
418 return;
419 break;
420 default:
421 break;
422 }
423
424 if (!check_sdata_in_driver(sdata))
425 return;
426
427 drv_link_info_changed(local, sdata, link->conf, link->link_id, changed);
428}
429
430u64 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata)
431{
432 sdata->vif.bss_conf.use_cts_prot = false;
433 sdata->vif.bss_conf.use_short_preamble = false;
434 sdata->vif.bss_conf.use_short_slot = false;
435 return BSS_CHANGED_ERP_CTS_PROT |
436 BSS_CHANGED_ERP_PREAMBLE |
437 BSS_CHANGED_ERP_SLOT;
438}
439
440/* context: requires softirqs disabled */
441void ieee80211_handle_queued_frames(struct ieee80211_local *local)
442{
443 struct sk_buff *skb;
444
445 while ((skb = skb_dequeue(&local->skb_queue)) ||
446 (skb = skb_dequeue(&local->skb_queue_unreliable))) {
447 switch (skb->pkt_type) {
448 case IEEE80211_RX_MSG:
449 /* Clear skb->pkt_type in order to not confuse kernel
450 * netstack. */
451 skb->pkt_type = 0;
452 ieee80211_rx(&local->hw, skb);
453 break;
454 case IEEE80211_TX_STATUS_MSG:
455 skb->pkt_type = 0;
456 ieee80211_tx_status_skb(&local->hw, skb);
457 break;
458 default:
459 WARN(1, "mac80211: Packet is of unknown type %d\n",
460 skb->pkt_type);
461 dev_kfree_skb(skb);
462 break;
463 }
464 }
465}
466
467static void ieee80211_tasklet_handler(struct tasklet_struct *t)
468{
469 struct ieee80211_local *local = from_tasklet(local, t, tasklet);
470
471 ieee80211_handle_queued_frames(local);
472}
473
474static void ieee80211_restart_work(struct work_struct *work)
475{
476 struct ieee80211_local *local =
477 container_of(work, struct ieee80211_local, restart_work);
478 struct ieee80211_sub_if_data *sdata;
479 int ret;
480
481 flush_workqueue(local->workqueue);
482
483 rtnl_lock();
484 /* we might do interface manipulations, so need both */
485 wiphy_lock(local->hw.wiphy);
486 wiphy_work_flush(local->hw.wiphy, NULL);
487
488 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning),
489 "%s called with hardware scan in progress\n", __func__);
490
491 list_for_each_entry(sdata, &local->interfaces, list) {
492 /*
493 * XXX: there may be more work for other vif types and even
494 * for station mode: a good thing would be to run most of
495 * the iface type's dependent _stop (ieee80211_mg_stop,
496 * ieee80211_ibss_stop) etc...
497 * For now, fix only the specific bug that was seen: race
498 * between csa_connection_drop_work and us.
499 */
500 if (sdata->vif.type == NL80211_IFTYPE_STATION) {
501 /*
502 * This worker is scheduled from the iface worker that
503 * runs on mac80211's workqueue, so we can't be
504 * scheduling this worker after the cancel right here.
505 * The exception is ieee80211_chswitch_done.
506 * Then we can have a race...
507 */
508 wiphy_work_cancel(local->hw.wiphy,
509 &sdata->u.mgd.csa_connection_drop_work);
510 if (sdata->vif.bss_conf.csa_active)
511 ieee80211_sta_connection_lost(sdata,
512 WLAN_REASON_UNSPECIFIED,
513 false);
514 }
515 wiphy_delayed_work_flush(local->hw.wiphy,
516 &sdata->dec_tailroom_needed_wk);
517 }
518 ieee80211_scan_cancel(local);
519
520 /* make sure any new ROC will consider local->in_reconfig */
521 wiphy_delayed_work_flush(local->hw.wiphy, &local->roc_work);
522 wiphy_work_flush(local->hw.wiphy, &local->hw_roc_done);
523
524 /* wait for all packet processing to be done */
525 synchronize_net();
526
527 ret = ieee80211_reconfig(local);
528 wiphy_unlock(local->hw.wiphy);
529
530 if (ret)
531 cfg80211_shutdown_all_interfaces(local->hw.wiphy);
532
533 rtnl_unlock();
534}
535
536void ieee80211_restart_hw(struct ieee80211_hw *hw)
537{
538 struct ieee80211_local *local = hw_to_local(hw);
539
540 trace_api_restart_hw(local);
541
542 wiphy_info(hw->wiphy,
543 "Hardware restart was requested\n");
544
545 /* use this reason, ieee80211_reconfig will unblock it */
546 ieee80211_stop_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
547 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
548 false);
549
550 /*
551 * Stop all Rx during the reconfig. We don't want state changes
552 * or driver callbacks while this is in progress.
553 */
554 local->in_reconfig = true;
555 barrier();
556
557 queue_work(system_freezable_wq, &local->restart_work);
558}
559EXPORT_SYMBOL(ieee80211_restart_hw);
560
561#ifdef CONFIG_INET
562static int ieee80211_ifa_changed(struct notifier_block *nb,
563 unsigned long data, void *arg)
564{
565 struct in_ifaddr *ifa = arg;
566 struct ieee80211_local *local =
567 container_of(nb, struct ieee80211_local,
568 ifa_notifier);
569 struct net_device *ndev = ifa->ifa_dev->dev;
570 struct wireless_dev *wdev = ndev->ieee80211_ptr;
571 struct in_device *idev;
572 struct ieee80211_sub_if_data *sdata;
573 struct ieee80211_vif_cfg *vif_cfg;
574 struct ieee80211_if_managed *ifmgd;
575 int c = 0;
576
577 /* Make sure it's our interface that got changed */
578 if (!wdev)
579 return NOTIFY_DONE;
580
581 if (wdev->wiphy != local->hw.wiphy || !wdev->registered)
582 return NOTIFY_DONE;
583
584 sdata = IEEE80211_DEV_TO_SUB_IF(ndev);
585 vif_cfg = &sdata->vif.cfg;
586
587 /* ARP filtering is only supported in managed mode */
588 if (sdata->vif.type != NL80211_IFTYPE_STATION)
589 return NOTIFY_DONE;
590
591 idev = ifa->ifa_dev;
592
593 ifmgd = &sdata->u.mgd;
594
595 /*
596 * The nested here is needed to convince lockdep that this is
597 * all OK. Yes, we lock the wiphy mutex here while we already
598 * hold the notifier rwsem, that's the normal case. And yes,
599 * we also acquire the notifier rwsem again when unregistering
600 * a netdev while we already hold the wiphy mutex, so it does
601 * look like a typical ABBA deadlock.
602 *
603 * However, both of these things happen with the RTNL held
604 * already. Therefore, they can't actually happen, since the
605 * lock orders really are ABC and ACB, which is fine due to
606 * the RTNL (A).
607 *
608 * We still need to prevent recursion, which is accomplished
609 * by the !wdev->registered check above.
610 */
611 mutex_lock_nested(&local->hw.wiphy->mtx, 1);
612 __acquire(&local->hw.wiphy->mtx);
613
614 /* Copy the addresses to the vif config list */
615 ifa = rtnl_dereference(idev->ifa_list);
616 while (ifa) {
617 if (c < IEEE80211_BSS_ARP_ADDR_LIST_LEN)
618 vif_cfg->arp_addr_list[c] = ifa->ifa_address;
619 ifa = rtnl_dereference(ifa->ifa_next);
620 c++;
621 }
622
623 vif_cfg->arp_addr_cnt = c;
624
625 /* Configure driver only if associated (which also implies it is up) */
626 if (ifmgd->associated)
627 ieee80211_vif_cfg_change_notify(sdata, BSS_CHANGED_ARP_FILTER);
628
629 wiphy_unlock(local->hw.wiphy);
630
631 return NOTIFY_OK;
632}
633#endif
634
635#if IS_ENABLED(CONFIG_IPV6)
636static int ieee80211_ifa6_changed(struct notifier_block *nb,
637 unsigned long data, void *arg)
638{
639 struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)arg;
640 struct inet6_dev *idev = ifa->idev;
641 struct net_device *ndev = ifa->idev->dev;
642 struct ieee80211_local *local =
643 container_of(nb, struct ieee80211_local, ifa6_notifier);
644 struct wireless_dev *wdev = ndev->ieee80211_ptr;
645 struct ieee80211_sub_if_data *sdata;
646
647 /* Make sure it's our interface that got changed */
648 if (!wdev || wdev->wiphy != local->hw.wiphy)
649 return NOTIFY_DONE;
650
651 sdata = IEEE80211_DEV_TO_SUB_IF(ndev);
652
653 /*
654 * For now only support station mode. This is mostly because
655 * doing AP would have to handle AP_VLAN in some way ...
656 */
657 if (sdata->vif.type != NL80211_IFTYPE_STATION)
658 return NOTIFY_DONE;
659
660 drv_ipv6_addr_change(local, sdata, idev);
661
662 return NOTIFY_OK;
663}
664#endif
665
666/* There isn't a lot of sense in it, but you can transmit anything you like */
667static const struct ieee80211_txrx_stypes
668ieee80211_default_mgmt_stypes[NUM_NL80211_IFTYPES] = {
669 [NL80211_IFTYPE_ADHOC] = {
670 .tx = 0xffff,
671 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
672 BIT(IEEE80211_STYPE_AUTH >> 4) |
673 BIT(IEEE80211_STYPE_DEAUTH >> 4) |
674 BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
675 },
676 [NL80211_IFTYPE_STATION] = {
677 .tx = 0xffff,
678 /*
679 * To support Pre Association Security Negotiation (PASN) while
680 * already associated to one AP, allow user space to register to
681 * Rx authentication frames, so that the user space logic would
682 * be able to receive/handle authentication frames from a
683 * different AP as part of PASN.
684 * It is expected that user space would intelligently register
685 * for Rx authentication frames, i.e., only when PASN is used
686 * and configure a match filter only for PASN authentication
687 * algorithm, as otherwise the MLME functionality of mac80211
688 * would be broken.
689 */
690 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
691 BIT(IEEE80211_STYPE_AUTH >> 4) |
692 BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
693 },
694 [NL80211_IFTYPE_AP] = {
695 .tx = 0xffff,
696 .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) |
697 BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) |
698 BIT(IEEE80211_STYPE_PROBE_REQ >> 4) |
699 BIT(IEEE80211_STYPE_DISASSOC >> 4) |
700 BIT(IEEE80211_STYPE_AUTH >> 4) |
701 BIT(IEEE80211_STYPE_DEAUTH >> 4) |
702 BIT(IEEE80211_STYPE_ACTION >> 4),
703 },
704 [NL80211_IFTYPE_AP_VLAN] = {
705 /* copy AP */
706 .tx = 0xffff,
707 .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) |
708 BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) |
709 BIT(IEEE80211_STYPE_PROBE_REQ >> 4) |
710 BIT(IEEE80211_STYPE_DISASSOC >> 4) |
711 BIT(IEEE80211_STYPE_AUTH >> 4) |
712 BIT(IEEE80211_STYPE_DEAUTH >> 4) |
713 BIT(IEEE80211_STYPE_ACTION >> 4),
714 },
715 [NL80211_IFTYPE_P2P_CLIENT] = {
716 .tx = 0xffff,
717 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
718 BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
719 },
720 [NL80211_IFTYPE_P2P_GO] = {
721 .tx = 0xffff,
722 .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) |
723 BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) |
724 BIT(IEEE80211_STYPE_PROBE_REQ >> 4) |
725 BIT(IEEE80211_STYPE_DISASSOC >> 4) |
726 BIT(IEEE80211_STYPE_AUTH >> 4) |
727 BIT(IEEE80211_STYPE_DEAUTH >> 4) |
728 BIT(IEEE80211_STYPE_ACTION >> 4),
729 },
730 [NL80211_IFTYPE_MESH_POINT] = {
731 .tx = 0xffff,
732 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
733 BIT(IEEE80211_STYPE_AUTH >> 4) |
734 BIT(IEEE80211_STYPE_DEAUTH >> 4),
735 },
736 [NL80211_IFTYPE_P2P_DEVICE] = {
737 .tx = 0xffff,
738 /*
739 * To support P2P PASN pairing let user space register to rx
740 * also AUTH frames on P2P device interface.
741 */
742 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
743 BIT(IEEE80211_STYPE_PROBE_REQ >> 4) |
744 BIT(IEEE80211_STYPE_AUTH >> 4),
745 },
746 [NL80211_IFTYPE_NAN] = {
747 .tx = 0xffff,
748 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
749 BIT(IEEE80211_STYPE_AUTH >> 4),
750 },
751 [NL80211_IFTYPE_NAN_DATA] = {
752 .tx = 0xffff,
753 .rx = BIT(IEEE80211_STYPE_ACTION >> 4),
754 },
755};
756
757static const struct ieee80211_ht_cap mac80211_ht_capa_mod_mask = {
758 .ampdu_params_info = IEEE80211_HT_AMPDU_PARM_FACTOR |
759 IEEE80211_HT_AMPDU_PARM_DENSITY,
760
761 .cap_info = cpu_to_le16(IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
762 IEEE80211_HT_CAP_MAX_AMSDU |
763 IEEE80211_HT_CAP_SGI_20 |
764 IEEE80211_HT_CAP_SGI_40 |
765 IEEE80211_HT_CAP_TX_STBC |
766 IEEE80211_HT_CAP_RX_STBC |
767 IEEE80211_HT_CAP_LDPC_CODING |
768 IEEE80211_HT_CAP_40MHZ_INTOLERANT),
769 .mcs = {
770 .rx_mask = { 0xff, 0xff, 0xff, 0xff, 0xff,
771 0xff, 0xff, 0xff, 0xff, 0xff, },
772 },
773};
774
775static const struct ieee80211_vht_cap mac80211_vht_capa_mod_mask = {
776 .vht_cap_info =
777 cpu_to_le32(IEEE80211_VHT_CAP_RXLDPC |
778 IEEE80211_VHT_CAP_SHORT_GI_80 |
779 IEEE80211_VHT_CAP_SHORT_GI_160 |
780 IEEE80211_VHT_CAP_RXSTBC_MASK |
781 IEEE80211_VHT_CAP_TXSTBC |
782 IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE |
783 IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE |
784 IEEE80211_VHT_CAP_TX_ANTENNA_PATTERN |
785 IEEE80211_VHT_CAP_RX_ANTENNA_PATTERN |
786 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK),
787 .supp_mcs = {
788 .rx_mcs_map = cpu_to_le16(~0),
789 .tx_mcs_map = cpu_to_le16(~0),
790 },
791};
792
793struct ieee80211_hw *ieee80211_alloc_hw_nm(size_t priv_data_len,
794 const struct ieee80211_ops *ops,
795 const char *requested_name)
796{
797 struct ieee80211_local *local;
798 int priv_size, i;
799 struct wiphy *wiphy;
800 bool emulate_chanctx;
801
802 if (WARN_ON(!ops->tx || !ops->start || !ops->stop || !ops->config ||
803 !ops->add_interface || !ops->remove_interface ||
804 !ops->configure_filter || !ops->wake_tx_queue))
805 return NULL;
806
807 if (WARN_ON(ops->sta_state && (ops->sta_add || ops->sta_remove)))
808 return NULL;
809
810 if (WARN_ON(!!ops->link_info_changed != !!ops->vif_cfg_changed ||
811 (ops->link_info_changed && ops->bss_info_changed)))
812 return NULL;
813
814 /* check all or no channel context operations exist */
815 if (ops->add_chanctx == ieee80211_emulate_add_chanctx &&
816 ops->remove_chanctx == ieee80211_emulate_remove_chanctx &&
817 ops->change_chanctx == ieee80211_emulate_change_chanctx) {
818 if (WARN_ON(ops->assign_vif_chanctx ||
819 ops->unassign_vif_chanctx))
820 return NULL;
821 emulate_chanctx = true;
822 } else {
823 if (WARN_ON(ops->add_chanctx == ieee80211_emulate_add_chanctx ||
824 ops->remove_chanctx == ieee80211_emulate_remove_chanctx ||
825 ops->change_chanctx == ieee80211_emulate_change_chanctx))
826 return NULL;
827 if (WARN_ON(!ops->add_chanctx ||
828 !ops->remove_chanctx ||
829 !ops->change_chanctx ||
830 !ops->assign_vif_chanctx ||
831 !ops->unassign_vif_chanctx))
832 return NULL;
833 emulate_chanctx = false;
834 }
835
836 /* Ensure 32-byte alignment of our private data and hw private data.
837 * We use the wiphy priv data for both our ieee80211_local and for
838 * the driver's private data
839 *
840 * In memory it'll be like this:
841 *
842 * +-------------------------+
843 * | struct wiphy |
844 * +-------------------------+
845 * | struct ieee80211_local |
846 * +-------------------------+
847 * | driver's private data |
848 * +-------------------------+
849 *
850 */
851 priv_size = ALIGN(sizeof(*local), NETDEV_ALIGN) + priv_data_len;
852
853 wiphy = wiphy_new_nm(&mac80211_config_ops, priv_size, requested_name);
854
855 if (!wiphy)
856 return NULL;
857
858 wiphy->mgmt_stypes = ieee80211_default_mgmt_stypes;
859
860 wiphy->privid = mac80211_wiphy_privid;
861
862 wiphy->flags |= WIPHY_FLAG_NETNS_OK |
863 WIPHY_FLAG_4ADDR_AP |
864 WIPHY_FLAG_4ADDR_STATION |
865 WIPHY_FLAG_REPORTS_OBSS |
866 WIPHY_FLAG_OFFCHAN_TX;
867
868 if (emulate_chanctx || ops->remain_on_channel)
869 wiphy->flags |= WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL;
870
871 wiphy->bss_param_support = WIPHY_BSS_PARAM_CTS_PROT |
872 WIPHY_BSS_PARAM_SHORT_PREAMBLE |
873 WIPHY_BSS_PARAM_SHORT_SLOT_TIME |
874 WIPHY_BSS_PARAM_BASIC_RATES |
875 WIPHY_BSS_PARAM_AP_ISOLATE |
876 WIPHY_BSS_PARAM_HT_OPMODE |
877 WIPHY_BSS_PARAM_P2P_CTWINDOW |
878 WIPHY_BSS_PARAM_P2P_OPPPS;
879 wiphy->features |= NL80211_FEATURE_SK_TX_STATUS |
880 NL80211_FEATURE_SAE |
881 NL80211_FEATURE_HT_IBSS |
882 NL80211_FEATURE_VIF_TXPOWER |
883 NL80211_FEATURE_MAC_ON_CREATE |
884 NL80211_FEATURE_USERSPACE_MPM |
885 NL80211_FEATURE_FULL_AP_CLIENT_STATE;
886 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_FILS_STA);
887 wiphy_ext_feature_set(wiphy,
888 NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211);
889 wiphy_ext_feature_set(wiphy,
890 NL80211_EXT_FEATURE_CONTROL_PORT_NO_PREAUTH);
891 wiphy_ext_feature_set(wiphy,
892 NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211_TX_STATUS);
893 wiphy_ext_feature_set(wiphy,
894 NL80211_EXT_FEATURE_SCAN_FREQ_KHZ);
895 wiphy_ext_feature_set(wiphy,
896 NL80211_EXT_FEATURE_POWERED_ADDR_CHANGE);
897
898 if (!ops->hw_scan) {
899 wiphy->features |= NL80211_FEATURE_LOW_PRIORITY_SCAN |
900 NL80211_FEATURE_AP_SCAN;
901 /*
902 * if the driver behaves correctly using the probe request
903 * (template) from mac80211, then both of these should be
904 * supported even with hw scan - but let drivers opt in.
905 */
906 wiphy_ext_feature_set(wiphy,
907 NL80211_EXT_FEATURE_SCAN_RANDOM_SN);
908 wiphy_ext_feature_set(wiphy,
909 NL80211_EXT_FEATURE_SCAN_MIN_PREQ_CONTENT);
910 }
911
912 if (!ops->set_key) {
913 wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
914 wiphy_ext_feature_set(wiphy,
915 NL80211_EXT_FEATURE_SPP_AMSDU_SUPPORT);
916 }
917
918 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_TXQS);
919 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_RRM);
920 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_IEEE8021X_AUTH);
921
922 wiphy->bss_priv_size = sizeof(struct ieee80211_bss);
923
924 local = wiphy_priv(wiphy);
925
926 if (sta_info_init(local))
927 goto err_free;
928
929 local->hw.wiphy = wiphy;
930
931 local->hw.priv = (char *)local + ALIGN(sizeof(*local), NETDEV_ALIGN);
932
933 local->ops = ops;
934 local->emulate_chanctx = emulate_chanctx;
935
936 if (emulate_chanctx)
937 ieee80211_hw_set(&local->hw, CHANCTX_STA_CSA);
938
939 /*
940 * We need a bit of data queued to build aggregates properly, so
941 * instruct the TCP stack to allow more than a single ms of data
942 * to be queued in the stack. The value is a bit-shift of 1
943 * second, so 7 is ~8ms of queued data. Only affects local TCP
944 * sockets.
945 * This is the default, anyhow - drivers may need to override it
946 * for local reasons (longer buffers, longer completion time, or
947 * similar).
948 */
949 local->hw.tx_sk_pacing_shift = 7;
950
951 /* set up some defaults */
952 local->hw.queues = 1;
953 local->hw.max_rates = 1;
954 local->hw.max_report_rates = 0;
955 local->hw.max_rx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF_HT;
956 local->hw.max_tx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF_HT;
957 local->hw.offchannel_tx_hw_queue = IEEE80211_INVAL_HW_QUEUE;
958 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
959 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
960 local->hw.radiotap_mcs_details = IEEE80211_RADIOTAP_MCS_HAVE_MCS |
961 IEEE80211_RADIOTAP_MCS_HAVE_GI |
962 IEEE80211_RADIOTAP_MCS_HAVE_BW;
963 local->hw.radiotap_vht_details = IEEE80211_RADIOTAP_VHT_KNOWN_GI |
964 IEEE80211_RADIOTAP_VHT_KNOWN_BANDWIDTH;
965 local->hw.uapsd_queues = IEEE80211_DEFAULT_UAPSD_QUEUES;
966 local->hw.uapsd_max_sp_len = IEEE80211_DEFAULT_MAX_SP_LEN;
967 local->hw.max_mtu = IEEE80211_MAX_DATA_LEN;
968 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
969 wiphy->ht_capa_mod_mask = &mac80211_ht_capa_mod_mask;
970 wiphy->vht_capa_mod_mask = &mac80211_vht_capa_mod_mask;
971
972 local->ext_capa[7] = WLAN_EXT_CAPA8_OPMODE_NOTIF;
973
974 wiphy->extended_capabilities = local->ext_capa;
975 wiphy->extended_capabilities_mask = local->ext_capa;
976 wiphy->extended_capabilities_len =
977 ARRAY_SIZE(local->ext_capa);
978
979 INIT_LIST_HEAD(&local->interfaces);
980 INIT_LIST_HEAD(&local->mon_list);
981
982 __hw_addr_init(&local->mc_list);
983
984 mutex_init(&local->iflist_mtx);
985 spin_lock_init(&local->filter_lock);
986 spin_lock_init(&local->rx_path_lock);
987 spin_lock_init(&local->queue_stop_reason_lock);
988
989 local->aql_txq_limit_mc = IEEE80211_DEFAULT_AQL_TXQ_LIMIT_MC;
990 for (i = 0; i < IEEE80211_NUM_ACS; i++) {
991 INIT_LIST_HEAD(&local->active_txqs[i]);
992 spin_lock_init(&local->active_txq_lock[i]);
993 local->aql_txq_limit_low[i] = IEEE80211_DEFAULT_AQL_TXQ_LIMIT_L;
994 local->aql_txq_limit_high[i] =
995 IEEE80211_DEFAULT_AQL_TXQ_LIMIT_H;
996 atomic_set(&local->aql_ac_pending_airtime[i], 0);
997 }
998
999 local->airtime_flags = AIRTIME_USE_TX | AIRTIME_USE_RX;
1000 local->aql_threshold = IEEE80211_AQL_THRESHOLD;
1001 atomic_set(&local->aql_total_pending_airtime, 0);
1002
1003 spin_lock_init(&local->handle_wake_tx_queue_lock);
1004
1005 INIT_LIST_HEAD(&local->chanctx_list);
1006
1007 wiphy_delayed_work_init(&local->scan_work, ieee80211_scan_work);
1008
1009 INIT_WORK(&local->restart_work, ieee80211_restart_work);
1010
1011 wiphy_work_init(&local->radar_detected_work,
1012 ieee80211_dfs_radar_detected_work);
1013
1014 wiphy_work_init(&local->reconfig_filter, ieee80211_reconfig_filter);
1015
1016 wiphy_work_init(&local->dynamic_ps_enable_work,
1017 ieee80211_dynamic_ps_enable_work);
1018 wiphy_work_init(&local->dynamic_ps_disable_work,
1019 ieee80211_dynamic_ps_disable_work);
1020 timer_setup(&local->dynamic_ps_timer, ieee80211_dynamic_ps_timer, 0);
1021
1022 wiphy_work_init(&local->sched_scan_stopped_work,
1023 ieee80211_sched_scan_stopped_work);
1024
1025 spin_lock_init(&local->ack_status_lock);
1026 idr_init(&local->ack_status_frames);
1027
1028 for (i = 0; i < IEEE80211_MAX_QUEUES; i++) {
1029 skb_queue_head_init(&local->pending[i]);
1030 atomic_set(&local->agg_queue_stop[i], 0);
1031 }
1032 tasklet_setup(&local->tx_pending_tasklet, ieee80211_tx_pending);
1033 tasklet_setup(&local->wake_txqs_tasklet, ieee80211_wake_txqs);
1034 tasklet_setup(&local->tasklet, ieee80211_tasklet_handler);
1035
1036 skb_queue_head_init(&local->skb_queue);
1037 skb_queue_head_init(&local->skb_queue_unreliable);
1038
1039 ieee80211_alloc_led_names(local);
1040
1041 ieee80211_roc_setup(local);
1042
1043 local->hw.radiotap_timestamp.units_pos = -1;
1044 local->hw.radiotap_timestamp.accuracy = -1;
1045
1046 return &local->hw;
1047 err_free:
1048 wiphy_free(wiphy);
1049 return NULL;
1050}
1051EXPORT_SYMBOL(ieee80211_alloc_hw_nm);
1052
1053static int ieee80211_init_cipher_suites(struct ieee80211_local *local)
1054{
1055 bool have_mfp = ieee80211_hw_check(&local->hw, MFP_CAPABLE);
1056 static const u32 cipher_suites[] = {
1057 /* keep WEP and TKIP first, they may be removed below */
1058 WLAN_CIPHER_SUITE_WEP40,
1059 WLAN_CIPHER_SUITE_WEP104,
1060 WLAN_CIPHER_SUITE_TKIP,
1061 WLAN_CIPHER_SUITE_CCMP,
1062 WLAN_CIPHER_SUITE_CCMP_256,
1063 WLAN_CIPHER_SUITE_GCMP,
1064 WLAN_CIPHER_SUITE_GCMP_256,
1065
1066 /* keep last -- depends on hw flags! */
1067 WLAN_CIPHER_SUITE_AES_CMAC,
1068 WLAN_CIPHER_SUITE_BIP_CMAC_256,
1069 WLAN_CIPHER_SUITE_BIP_GMAC_128,
1070 WLAN_CIPHER_SUITE_BIP_GMAC_256,
1071 };
1072
1073 if (ieee80211_hw_check(&local->hw, SW_CRYPTO_CONTROL) && fips_enabled) {
1074 dev_err(local->hw.wiphy->dev.parent,
1075 "Drivers with SW_CRYPTO_CONTROL cannot work with FIPS\n");
1076 return -EINVAL;
1077 }
1078
1079 if (WARN_ON(ieee80211_hw_check(&local->hw, SW_CRYPTO_CONTROL) &&
1080 !local->hw.wiphy->cipher_suites))
1081 return -EINVAL;
1082
1083 if (fips_enabled || !local->hw.wiphy->cipher_suites) {
1084 /* assign the (software supported and perhaps offloaded)
1085 * cipher suites
1086 */
1087 local->hw.wiphy->cipher_suites = cipher_suites;
1088 local->hw.wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
1089
1090 if (!have_mfp)
1091 local->hw.wiphy->n_cipher_suites -= 4;
1092
1093 /* FIPS does not permit the use of RC4 */
1094 if (fips_enabled) {
1095 local->hw.wiphy->cipher_suites += 3;
1096 local->hw.wiphy->n_cipher_suites -= 3;
1097 }
1098 }
1099
1100 return 0;
1101}
1102
1103static bool
1104ieee80211_ifcomb_check(const struct ieee80211_iface_combination *c, int n_comb)
1105{
1106 int i, j;
1107
1108 for (i = 0; i < n_comb; i++, c++) {
1109 /* DFS is not supported with multi-channel combinations yet */
1110 if (c->radar_detect_widths &&
1111 c->num_different_channels > 1)
1112 return false;
1113
1114 /* mac80211 doesn't support more than one IBSS interface */
1115 for (j = 0; j < c->n_limits; j++)
1116 if ((c->limits[j].types & BIT(NL80211_IFTYPE_ADHOC)) &&
1117 c->limits[j].max > 1)
1118 return false;
1119 }
1120
1121 return true;
1122}
1123
1124static void ieee80211_create_default_chandef(struct cfg80211_chan_def *chandef,
1125 struct ieee80211_channel *chan)
1126{
1127 *chandef = (struct cfg80211_chan_def) {
1128 .chan = chan,
1129 .width = chan->band == NL80211_BAND_S1GHZ ?
1130 NL80211_CHAN_WIDTH_1 :
1131 NL80211_CHAN_WIDTH_20_NOHT,
1132 .center_freq1 = chan->center_freq,
1133 .freq1_offset = chan->freq_offset,
1134 };
1135}
1136
1137int ieee80211_register_hw(struct ieee80211_hw *hw)
1138{
1139 struct ieee80211_local *local = hw_to_local(hw);
1140 int result, i;
1141 enum nl80211_band band;
1142 int channels, max_bitrates;
1143 bool supp_ht, supp_vht, supp_he, supp_eht, supp_s1g, supp_uhr;
1144 struct cfg80211_chan_def dflt_chandef = {};
1145
1146 if (ieee80211_hw_check(hw, QUEUE_CONTROL) &&
1147 (local->hw.offchannel_tx_hw_queue == IEEE80211_INVAL_HW_QUEUE ||
1148 local->hw.offchannel_tx_hw_queue >= local->hw.queues))
1149 return -EINVAL;
1150
1151 if ((hw->wiphy->features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH) &&
1152 (!local->ops->tdls_channel_switch ||
1153 !local->ops->tdls_cancel_channel_switch ||
1154 !local->ops->tdls_recv_channel_switch))
1155 return -EOPNOTSUPP;
1156
1157 if (WARN_ON(ieee80211_hw_check(hw, SUPPORTS_TX_FRAG) &&
1158 !local->ops->set_frag_threshold))
1159 return -EINVAL;
1160
1161 if (WARN_ON(local->hw.wiphy->interface_modes &
1162 BIT(NL80211_IFTYPE_NAN) &&
1163 ((!local->ops->start_nan || !local->ops->stop_nan) ||
1164 (local->hw.wiphy->nan_capa.flags & WIPHY_NAN_FLAGS_USERSPACE_DE &&
1165 (local->ops->add_nan_func || local->ops->del_nan_func)))))
1166 return -EINVAL;
1167
1168 if (hw->wiphy->flags & WIPHY_FLAG_SUPPORTS_MLO) {
1169 /*
1170 * For drivers capable of doing MLO, assume modern driver
1171 * or firmware facilities, so software doesn't have to do
1172 * as much, e.g. monitoring beacons would be hard if we
1173 * might not even know which link is active at which time.
1174 */
1175 if (WARN_ON(local->emulate_chanctx))
1176 return -EINVAL;
1177
1178 if (WARN_ON(!local->ops->link_info_changed))
1179 return -EINVAL;
1180
1181 if (WARN_ON(!ieee80211_hw_check(hw, HAS_RATE_CONTROL)))
1182 return -EINVAL;
1183
1184 if (WARN_ON(!ieee80211_hw_check(hw, AMPDU_AGGREGATION)))
1185 return -EINVAL;
1186
1187 if (WARN_ON(ieee80211_hw_check(hw, HOST_BROADCAST_PS_BUFFERING)))
1188 return -EINVAL;
1189
1190 if (WARN_ON(ieee80211_hw_check(hw, SUPPORTS_PS) &&
1191 (!ieee80211_hw_check(hw, SUPPORTS_DYNAMIC_PS) ||
1192 ieee80211_hw_check(hw, PS_NULLFUNC_STACK))))
1193 return -EINVAL;
1194
1195 if (WARN_ON(!ieee80211_hw_check(hw, MFP_CAPABLE)))
1196 return -EINVAL;
1197
1198 if (WARN_ON(ieee80211_hw_check(hw, NEED_DTIM_BEFORE_ASSOC)))
1199 return -EINVAL;
1200
1201 if (WARN_ON(ieee80211_hw_check(hw, TIMING_BEACON_ONLY)))
1202 return -EINVAL;
1203
1204 if (WARN_ON(!ieee80211_hw_check(hw, AP_LINK_PS)))
1205 return -EINVAL;
1206 }
1207
1208#ifdef CONFIG_PM
1209 if (hw->wiphy->wowlan && (!local->ops->suspend || !local->ops->resume))
1210 return -EINVAL;
1211#endif
1212
1213 if (local->emulate_chanctx) {
1214 for (i = 0; i < local->hw.wiphy->n_iface_combinations; i++) {
1215 const struct ieee80211_iface_combination *comb;
1216
1217 comb = &local->hw.wiphy->iface_combinations[i];
1218
1219 if (comb->num_different_channels > 1)
1220 return -EINVAL;
1221 }
1222 }
1223
1224 if (hw->wiphy->n_radio) {
1225 for (i = 0; i < hw->wiphy->n_radio; i++) {
1226 const struct wiphy_radio *radio = &hw->wiphy->radio[i];
1227
1228 if (!ieee80211_ifcomb_check(radio->iface_combinations,
1229 radio->n_iface_combinations))
1230 return -EINVAL;
1231 }
1232 } else {
1233 if (!ieee80211_ifcomb_check(hw->wiphy->iface_combinations,
1234 hw->wiphy->n_iface_combinations))
1235 return -EINVAL;
1236 }
1237
1238 /* Only HW csum features are currently compatible with mac80211 */
1239 if (WARN_ON(hw->netdev_features & ~MAC80211_SUPPORTED_FEATURES))
1240 return -EINVAL;
1241
1242 if (hw->max_report_rates == 0)
1243 hw->max_report_rates = hw->max_rates;
1244
1245 local->rx_chains = 1;
1246
1247 /*
1248 * generic code guarantees at least one band,
1249 * set this very early because much code assumes
1250 * that hw.conf.channel is assigned
1251 */
1252 channels = 0;
1253 max_bitrates = 0;
1254 supp_ht = false;
1255 supp_vht = false;
1256 supp_he = false;
1257 supp_eht = false;
1258 supp_s1g = false;
1259 supp_uhr = false;
1260 for (band = 0; band < NUM_NL80211_BANDS; band++) {
1261 const struct ieee80211_sband_iftype_data *iftd;
1262 struct ieee80211_supported_band *sband;
1263
1264 sband = local->hw.wiphy->bands[band];
1265 if (!sband)
1266 continue;
1267
1268 if (!dflt_chandef.chan) {
1269 /*
1270 * Assign the first enabled channel to dflt_chandef
1271 * from the list of channels. For S1G interfaces
1272 * ensure it can be used as a primary.
1273 */
1274 for (i = 0; i < sband->n_channels; i++)
1275 if (!(sband->channels[i].flags &
1276 (IEEE80211_CHAN_DISABLED |
1277 IEEE80211_CHAN_S1G_NO_PRIMARY)))
1278 break;
1279 /* if none found then use the first anyway */
1280 if (i == sband->n_channels)
1281 i = 0;
1282 ieee80211_create_default_chandef(&dflt_chandef,
1283 &sband->channels[i]);
1284 /* init channel we're on */
1285 local->monitor_chanreq.oper = dflt_chandef;
1286 if (local->emulate_chanctx) {
1287 local->dflt_chandef = dflt_chandef;
1288 local->hw.conf.chandef = dflt_chandef;
1289 }
1290 }
1291
1292 channels += sband->n_channels;
1293
1294 /*
1295 * Due to the way the aggregation code handles this and it
1296 * being an HT capability, we can't really support delayed
1297 * BA in MLO (yet).
1298 */
1299 if (WARN_ON(sband->ht_cap.ht_supported &&
1300 (sband->ht_cap.cap & IEEE80211_HT_CAP_DELAY_BA) &&
1301 hw->wiphy->flags & WIPHY_FLAG_SUPPORTS_MLO))
1302 return -EINVAL;
1303
1304 if (max_bitrates < sband->n_bitrates)
1305 max_bitrates = sband->n_bitrates;
1306 supp_ht = supp_ht || sband->ht_cap.ht_supported;
1307 supp_vht = supp_vht || sband->vht_cap.vht_supported;
1308 supp_s1g = supp_s1g || sband->s1g_cap.s1g;
1309
1310 for_each_sband_iftype_data(sband, i, iftd) {
1311 u8 he_40_mhz_cap;
1312
1313 supp_he = supp_he || iftd->he_cap.has_he;
1314 supp_eht = supp_eht || iftd->eht_cap.has_eht;
1315 supp_uhr = supp_uhr || iftd->uhr_cap.has_uhr;
1316
1317 if (band == NL80211_BAND_2GHZ)
1318 he_40_mhz_cap =
1319 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_IN_2G;
1320 else
1321 he_40_mhz_cap =
1322 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G;
1323
1324 /* currently no support for HE client where HT has 40 MHz but not HT */
1325 if (iftd->he_cap.has_he &&
1326 iftd->types_mask & (BIT(NL80211_IFTYPE_STATION) |
1327 BIT(NL80211_IFTYPE_P2P_CLIENT)) &&
1328 sband->ht_cap.ht_supported &&
1329 sband->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 &&
1330 !(iftd->he_cap.he_cap_elem.phy_cap_info[0] & he_40_mhz_cap))
1331 return -EINVAL;
1332
1333 /* no support for per-band vendor elems with MLO */
1334 if (WARN_ON(iftd->vendor_elems.len &&
1335 hw->wiphy->flags & WIPHY_FLAG_SUPPORTS_MLO))
1336 return -EINVAL;
1337 }
1338
1339 /* HT, VHT, HE require QoS, thus >= 4 queues */
1340 if (WARN_ON(local->hw.queues < IEEE80211_NUM_ACS &&
1341 (supp_ht || supp_vht || supp_he)))
1342 return -EINVAL;
1343
1344 /* EHT requires HE support */
1345 if (WARN_ON(supp_eht && !supp_he))
1346 return -EINVAL;
1347
1348 /* UHR requires EHT support */
1349 if (WARN_ON(supp_uhr && !supp_eht))
1350 return -EINVAL;
1351
1352 if (!sband->ht_cap.ht_supported)
1353 continue;
1354
1355 /* TODO: consider VHT for RX chains, hopefully it's the same */
1356 local->rx_chains =
1357 max(ieee80211_mcs_to_chains(&sband->ht_cap.mcs),
1358 local->rx_chains);
1359
1360 /* no need to mask, SM_PS_DISABLED has all bits set */
1361 sband->ht_cap.cap |= WLAN_HT_CAP_SM_PS_DISABLED <<
1362 IEEE80211_HT_CAP_SM_PS_SHIFT;
1363 }
1364
1365 /* if low-level driver supports AP, we also support VLAN.
1366 * drivers advertising SW_CRYPTO_CONTROL should enable AP_VLAN
1367 * based on their support to transmit SW encrypted packets.
1368 */
1369 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_AP) &&
1370 !ieee80211_hw_check(&local->hw, SW_CRYPTO_CONTROL)) {
1371 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP_VLAN);
1372 hw->wiphy->software_iftypes |= BIT(NL80211_IFTYPE_AP_VLAN);
1373 }
1374
1375 /* mac80211 always supports monitor */
1376 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR);
1377 hw->wiphy->software_iftypes |= BIT(NL80211_IFTYPE_MONITOR);
1378
1379
1380 local->int_scan_req = kzalloc_flex(*local->int_scan_req, channels,
1381 channels);
1382 if (!local->int_scan_req)
1383 return -ENOMEM;
1384
1385 eth_broadcast_addr(local->int_scan_req->bssid);
1386
1387 for (band = 0; band < NUM_NL80211_BANDS; band++) {
1388 if (!local->hw.wiphy->bands[band])
1389 continue;
1390 local->int_scan_req->rates[band] = (u32) -1;
1391 }
1392
1393#ifndef CONFIG_MAC80211_MESH
1394 /* mesh depends on Kconfig, but drivers should set it if they want */
1395 local->hw.wiphy->interface_modes &= ~BIT(NL80211_IFTYPE_MESH_POINT);
1396#endif
1397
1398 /* if the underlying driver supports mesh, mac80211 will (at least)
1399 * provide routing of mesh authentication frames to userspace */
1400 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_MESH_POINT))
1401 local->hw.wiphy->flags |= WIPHY_FLAG_MESH_AUTH;
1402
1403 /* mac80211 supports control port protocol changing */
1404 local->hw.wiphy->flags |= WIPHY_FLAG_CONTROL_PORT_PROTOCOL;
1405
1406 if (ieee80211_hw_check(&local->hw, SIGNAL_DBM)) {
1407 local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
1408 } else if (ieee80211_hw_check(&local->hw, SIGNAL_UNSPEC)) {
1409 local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC;
1410 if (hw->max_signal <= 0) {
1411 result = -EINVAL;
1412 goto fail_workqueue;
1413 }
1414 }
1415
1416 /* Mac80211 and therefore all drivers using SW crypto only
1417 * are able to handle PTK rekeys and Extended Key ID.
1418 */
1419 if (!local->ops->set_key) {
1420 wiphy_ext_feature_set(local->hw.wiphy,
1421 NL80211_EXT_FEATURE_CAN_REPLACE_PTK0);
1422 wiphy_ext_feature_set(local->hw.wiphy,
1423 NL80211_EXT_FEATURE_EXT_KEY_ID);
1424 }
1425
1426 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_ADHOC))
1427 wiphy_ext_feature_set(local->hw.wiphy,
1428 NL80211_EXT_FEATURE_DEL_IBSS_STA);
1429
1430 /*
1431 * Calculate scan IE length -- we need this to alloc
1432 * memory and to subtract from the driver limit. It
1433 * includes the DS Params, (extended) supported rates, and HT
1434 * information -- SSID is the driver's responsibility.
1435 */
1436 local->scan_ies_len = 4 + max_bitrates /* (ext) supp rates */ +
1437 3 /* DS Params */;
1438 if (supp_ht)
1439 local->scan_ies_len += 2 + sizeof(struct ieee80211_ht_cap);
1440
1441 if (supp_vht)
1442 local->scan_ies_len +=
1443 2 + sizeof(struct ieee80211_vht_cap);
1444
1445 if (supp_s1g)
1446 local->scan_ies_len += 2 + sizeof(struct ieee80211_s1g_cap);
1447
1448 /*
1449 * HE cap element is variable in size - set len to allow max size */
1450 if (supp_he) {
1451 local->scan_ies_len +=
1452 3 + sizeof(struct ieee80211_he_cap_elem) +
1453 sizeof(struct ieee80211_he_mcs_nss_supp) +
1454 IEEE80211_HE_PPE_THRES_MAX_LEN;
1455
1456 if (local->hw.wiphy->bands[NL80211_BAND_6GHZ])
1457 local->scan_ies_len +=
1458 3 + sizeof(struct ieee80211_he_6ghz_capa);
1459
1460 if (supp_eht)
1461 local->scan_ies_len +=
1462 3 + sizeof(struct ieee80211_eht_cap_elem) +
1463 sizeof(struct ieee80211_eht_mcs_nss_supp) +
1464 IEEE80211_EHT_PPE_THRES_MAX_LEN;
1465 }
1466
1467 if (supp_uhr)
1468 local->scan_ies_len +=
1469 3 + sizeof(struct ieee80211_uhr_cap);
1470
1471 if (!local->ops->hw_scan) {
1472 /* For hw_scan, driver needs to set these up. */
1473 local->hw.wiphy->max_scan_ssids = 4;
1474 local->hw.wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
1475 }
1476
1477 /*
1478 * If the driver supports any scan IEs, then assume the
1479 * limit includes the IEs mac80211 will add, otherwise
1480 * leave it at zero and let the driver sort it out; we
1481 * still pass our IEs to the driver but userspace will
1482 * not be allowed to in that case.
1483 */
1484 if (local->hw.wiphy->max_scan_ie_len)
1485 local->hw.wiphy->max_scan_ie_len -= local->scan_ies_len;
1486
1487 result = ieee80211_init_cipher_suites(local);
1488 if (result < 0)
1489 goto fail_workqueue;
1490
1491 if (!local->ops->remain_on_channel)
1492 local->hw.wiphy->max_remain_on_channel_duration = 5000;
1493
1494 /* mac80211 based drivers don't support internal TDLS setup */
1495 if (local->hw.wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS)
1496 local->hw.wiphy->flags |= WIPHY_FLAG_TDLS_EXTERNAL_SETUP;
1497
1498 /* mac80211 supports eCSA, if the driver supports STA CSA at all */
1499 if (ieee80211_hw_check(&local->hw, CHANCTX_STA_CSA))
1500 local->ext_capa[0] |= WLAN_EXT_CAPA1_EXT_CHANNEL_SWITCHING;
1501
1502 /* mac80211 supports multi BSSID, if the driver supports it */
1503 if (ieee80211_hw_check(&local->hw, SUPPORTS_MULTI_BSSID)) {
1504 local->hw.wiphy->support_mbssid = true;
1505 if (ieee80211_hw_check(&local->hw,
1506 SUPPORTS_ONLY_HE_MULTI_BSSID))
1507 local->hw.wiphy->support_only_he_mbssid = true;
1508 else
1509 local->ext_capa[2] |=
1510 WLAN_EXT_CAPA3_MULTI_BSSID_SUPPORT;
1511 }
1512
1513 local->hw.wiphy->max_num_csa_counters = IEEE80211_MAX_CNTDWN_COUNTERS_NUM;
1514
1515 /*
1516 * We use the number of queues for feature tests (QoS, HT) internally
1517 * so restrict them appropriately.
1518 */
1519 if (hw->queues > IEEE80211_MAX_QUEUES)
1520 hw->queues = IEEE80211_MAX_QUEUES;
1521
1522 local->workqueue =
1523 alloc_ordered_workqueue("%s", 0, wiphy_name(local->hw.wiphy));
1524 if (!local->workqueue) {
1525 result = -ENOMEM;
1526 goto fail_workqueue;
1527 }
1528
1529 /*
1530 * The hardware needs headroom for sending the frame,
1531 * and we need some headroom for passing the frame to monitor
1532 * interfaces, but never both at the same time.
1533 */
1534 local->tx_headroom = max_t(unsigned int , local->hw.extra_tx_headroom,
1535 IEEE80211_TX_STATUS_HEADROOM);
1536
1537 /*
1538 * if the driver doesn't specify a max listen interval we
1539 * use 5 which should be a safe default
1540 */
1541 if (local->hw.max_listen_interval == 0)
1542 local->hw.max_listen_interval = 5;
1543
1544 local->hw.conf.listen_interval = local->hw.max_listen_interval;
1545
1546 local->dynamic_ps_forced_timeout = -1;
1547
1548 if (!local->hw.max_nan_de_entries)
1549 local->hw.max_nan_de_entries = IEEE80211_MAX_NAN_INSTANCE_ID;
1550
1551 if (!local->hw.weight_multiplier)
1552 local->hw.weight_multiplier = 1;
1553
1554 ieee80211_wep_init(local);
1555
1556 local->hw.conf.flags = IEEE80211_CONF_IDLE;
1557
1558 ieee80211_led_init(local);
1559
1560 result = ieee80211_txq_setup_flows(local);
1561 if (result)
1562 goto fail_flows;
1563
1564 rtnl_lock();
1565 result = ieee80211_init_rate_ctrl_alg(local,
1566 hw->rate_control_algorithm);
1567 rtnl_unlock();
1568 if (result < 0) {
1569 wiphy_debug(local->hw.wiphy,
1570 "Failed to initialize rate control algorithm\n");
1571 goto fail_rate;
1572 }
1573
1574 if (local->rate_ctrl) {
1575 clear_bit(IEEE80211_HW_SUPPORTS_VHT_EXT_NSS_BW, hw->flags);
1576 if (local->rate_ctrl->ops->capa & RATE_CTRL_CAPA_VHT_EXT_NSS_BW)
1577 ieee80211_hw_set(hw, SUPPORTS_VHT_EXT_NSS_BW);
1578 }
1579
1580 /*
1581 * If the VHT capabilities don't have IEEE80211_VHT_EXT_NSS_BW_CAPABLE,
1582 * or have it when we don't, copy the sband structure and set/clear it.
1583 * This is necessary because rate scaling algorithms could be switched
1584 * and have different support values.
1585 * Print a message so that in the common case the reallocation can be
1586 * avoided.
1587 */
1588 BUILD_BUG_ON(NUM_NL80211_BANDS > 8 * sizeof(local->sband_allocated));
1589 for (band = 0; band < NUM_NL80211_BANDS; band++) {
1590 struct ieee80211_supported_band *sband;
1591 bool local_cap, ie_cap;
1592
1593 local_cap = ieee80211_hw_check(hw, SUPPORTS_VHT_EXT_NSS_BW);
1594
1595 sband = local->hw.wiphy->bands[band];
1596 if (!sband || !sband->vht_cap.vht_supported)
1597 continue;
1598
1599 ie_cap = !!(sband->vht_cap.vht_mcs.tx_highest &
1600 cpu_to_le16(IEEE80211_VHT_EXT_NSS_BW_CAPABLE));
1601
1602 if (local_cap == ie_cap)
1603 continue;
1604
1605 sband = kmemdup(sband, sizeof(*sband), GFP_KERNEL);
1606 if (!sband) {
1607 result = -ENOMEM;
1608 goto fail_band;
1609 }
1610
1611 wiphy_dbg(hw->wiphy, "copying sband (band %d) due to VHT EXT NSS BW flag\n",
1612 band);
1613
1614 sband->vht_cap.vht_mcs.tx_highest ^=
1615 cpu_to_le16(IEEE80211_VHT_EXT_NSS_BW_CAPABLE);
1616
1617 local->hw.wiphy->bands[band] = sband;
1618 local->sband_allocated |= BIT(band);
1619 }
1620
1621 /*
1622 * mac80211 supports EPPKE, if the driver supports (Re)Association
1623 * frame encryption
1624 */
1625 if (wiphy_ext_feature_isset(local->hw.wiphy,
1626 NL80211_EXT_FEATURE_ASSOC_FRAME_ENCRYPTION))
1627 wiphy_ext_feature_set(local->hw.wiphy,
1628 NL80211_EXT_FEATURE_EPPKE);
1629
1630 result = wiphy_register(local->hw.wiphy);
1631 if (result < 0)
1632 goto fail_wiphy_register;
1633
1634 debugfs_hw_add(local);
1635 rate_control_add_debugfs(local);
1636
1637 ieee80211_check_wbrf_support(local);
1638
1639 rtnl_lock();
1640 wiphy_lock(hw->wiphy);
1641
1642 /* add one default STA interface if supported */
1643 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_STATION) &&
1644 !ieee80211_hw_check(hw, NO_AUTO_VIF)) {
1645 struct vif_params params = {0};
1646
1647 result = ieee80211_if_add(local, "wlan%d", NET_NAME_ENUM, NULL,
1648 NL80211_IFTYPE_STATION, &params);
1649 if (result)
1650 wiphy_warn(local->hw.wiphy,
1651 "Failed to add default virtual iface\n");
1652 }
1653
1654 wiphy_unlock(hw->wiphy);
1655 rtnl_unlock();
1656
1657#ifdef CONFIG_INET
1658 local->ifa_notifier.notifier_call = ieee80211_ifa_changed;
1659 result = register_inetaddr_notifier(&local->ifa_notifier);
1660 if (result)
1661 goto fail_ifa;
1662#endif
1663
1664#if IS_ENABLED(CONFIG_IPV6)
1665 local->ifa6_notifier.notifier_call = ieee80211_ifa6_changed;
1666 result = register_inet6addr_notifier(&local->ifa6_notifier);
1667 if (result)
1668 goto fail_ifa6;
1669#endif
1670
1671 return 0;
1672
1673#if IS_ENABLED(CONFIG_IPV6)
1674 fail_ifa6:
1675#ifdef CONFIG_INET
1676 unregister_inetaddr_notifier(&local->ifa_notifier);
1677#endif
1678#endif
1679#if defined(CONFIG_INET) || defined(CONFIG_IPV6)
1680 fail_ifa:
1681#endif
1682 wiphy_unregister(local->hw.wiphy);
1683 fail_wiphy_register:
1684 fail_band:
1685 rtnl_lock();
1686 rate_control_deinitialize(local);
1687 ieee80211_remove_interfaces(local);
1688 rtnl_unlock();
1689 fail_rate:
1690 ieee80211_txq_teardown_flows(local);
1691 fail_flows:
1692 ieee80211_led_exit(local);
1693 destroy_workqueue(local->workqueue);
1694 fail_workqueue:
1695 kfree(local->int_scan_req);
1696 return result;
1697}
1698EXPORT_SYMBOL(ieee80211_register_hw);
1699
1700void ieee80211_unregister_hw(struct ieee80211_hw *hw)
1701{
1702 struct ieee80211_local *local = hw_to_local(hw);
1703
1704 tasklet_kill(&local->tx_pending_tasklet);
1705 tasklet_kill(&local->tasklet);
1706
1707#ifdef CONFIG_INET
1708 unregister_inetaddr_notifier(&local->ifa_notifier);
1709#endif
1710#if IS_ENABLED(CONFIG_IPV6)
1711 unregister_inet6addr_notifier(&local->ifa6_notifier);
1712#endif
1713
1714 rtnl_lock();
1715
1716 /*
1717 * At this point, interface list manipulations are fine
1718 * because the driver cannot be handing us frames any
1719 * more and the tasklet is killed.
1720 */
1721 ieee80211_remove_interfaces(local);
1722
1723 ieee80211_txq_teardown_flows(local);
1724
1725 wiphy_lock(local->hw.wiphy);
1726 wiphy_delayed_work_cancel(local->hw.wiphy, &local->roc_work);
1727 wiphy_work_cancel(local->hw.wiphy, &local->reconfig_filter);
1728 wiphy_work_cancel(local->hw.wiphy, &local->sched_scan_stopped_work);
1729 wiphy_work_cancel(local->hw.wiphy, &local->radar_detected_work);
1730 wiphy_unlock(local->hw.wiphy);
1731 rtnl_unlock();
1732
1733 cancel_work_sync(&local->restart_work);
1734
1735 ieee80211_clear_tx_pending(local);
1736 rate_control_deinitialize(local);
1737
1738 if (skb_queue_len(&local->skb_queue) ||
1739 skb_queue_len(&local->skb_queue_unreliable))
1740 wiphy_warn(local->hw.wiphy, "skb_queue not empty\n");
1741 skb_queue_purge(&local->skb_queue);
1742 skb_queue_purge(&local->skb_queue_unreliable);
1743
1744 wiphy_unregister(local->hw.wiphy);
1745 destroy_workqueue(local->workqueue);
1746 ieee80211_led_exit(local);
1747 kfree(local->int_scan_req);
1748}
1749EXPORT_SYMBOL(ieee80211_unregister_hw);
1750
1751static int ieee80211_free_ack_frame(int id, void *p, void *data)
1752{
1753 WARN_ONCE(1, "Have pending ack frames!\n");
1754 kfree_skb(p);
1755 return 0;
1756}
1757
1758void ieee80211_free_hw(struct ieee80211_hw *hw)
1759{
1760 struct ieee80211_local *local = hw_to_local(hw);
1761 enum nl80211_band band;
1762
1763 mutex_destroy(&local->iflist_mtx);
1764
1765 idr_for_each(&local->ack_status_frames,
1766 ieee80211_free_ack_frame, NULL);
1767 idr_destroy(&local->ack_status_frames);
1768
1769 sta_info_stop(local);
1770
1771 ieee80211_free_led_names(local);
1772
1773 for (band = 0; band < NUM_NL80211_BANDS; band++) {
1774 if (!(local->sband_allocated & BIT(band)))
1775 continue;
1776 kfree(local->hw.wiphy->bands[band]);
1777 }
1778
1779 wiphy_free(local->hw.wiphy);
1780}
1781EXPORT_SYMBOL(ieee80211_free_hw);
1782#define V(x) #x,
1783static const char * const drop_reasons_unusable[] = {
1784 [0] = "RX_DROP_UNUSABLE",
1785 MAC80211_DROP_REASONS_UNUSABLE(V)
1786#undef V
1787};
1788
1789static struct drop_reason_list drop_reason_list_unusable = {
1790 .reasons = drop_reasons_unusable,
1791 .n_reasons = ARRAY_SIZE(drop_reasons_unusable),
1792};
1793
1794static int __init ieee80211_init(void)
1795{
1796 struct sk_buff *skb;
1797 int ret;
1798
1799 BUILD_BUG_ON(sizeof(struct ieee80211_tx_info) > sizeof(skb->cb));
1800 BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, driver_data) +
1801 IEEE80211_TX_INFO_DRIVER_DATA_SIZE > sizeof(skb->cb));
1802
1803 ret = rc80211_minstrel_init();
1804 if (ret)
1805 return ret;
1806
1807 ret = ieee80211_iface_init();
1808 if (ret)
1809 goto err_netdev;
1810
1811 drop_reasons_register_subsys(SKB_DROP_REASON_SUBSYS_MAC80211_UNUSABLE,
1812 &drop_reason_list_unusable);
1813
1814 return 0;
1815 err_netdev:
1816 rc80211_minstrel_exit();
1817
1818 return ret;
1819}
1820
1821static void __exit ieee80211_exit(void)
1822{
1823 rc80211_minstrel_exit();
1824
1825 ieee80211s_stop();
1826
1827 ieee80211_iface_exit();
1828
1829 drop_reasons_unregister_subsys(SKB_DROP_REASON_SUBSYS_MAC80211_UNUSABLE);
1830
1831 rcu_barrier();
1832}
1833
1834
1835subsys_initcall(ieee80211_init);
1836module_exit(ieee80211_exit);
1837
1838MODULE_DESCRIPTION("IEEE 802.11 subsystem");
1839MODULE_LICENSE("GPL");