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d2912cb1 1// SPDX-License-Identifier: GPL-2.0-only
f0706e82
JB
2/*
3 * Copyright 2002-2005, Instant802 Networks, Inc.
4 * Copyright 2005-2006, Devicescape Software, Inc.
5 * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
d98ad83e 6 * Copyright 2013-2014 Intel Mobile Communications GmbH
41cbb0f5 7 * Copyright (C) 2017 Intel Deutschland GmbH
caf56338 8 * Copyright (C) 2018 - 2019 Intel Corporation
f0706e82
JB
9 */
10
11#include <net/mac80211.h>
f0706e82 12#include <linux/module.h>
5fdb3735 13#include <linux/fips.h>
f0706e82
JB
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>
f0706e82 21#include <linux/rtnetlink.h>
f0706e82 22#include <linux/bitmap.h>
68542962 23#include <linux/inetdevice.h>
881d966b 24#include <net/net_namespace.h>
f0706e82 25#include <net/cfg80211.h>
a65240c1 26#include <net/addrconf.h>
f0706e82 27
f0706e82 28#include "ieee80211_i.h"
24487981 29#include "driver-ops.h"
2c8dccc7 30#include "rate.h"
f7a92144 31#include "mesh.h"
f0706e82 32#include "wep.h"
2c8dccc7 33#include "led.h"
e9f207f0 34#include "debugfs.h"
f0706e82 35
0d143fe1 36void ieee80211_configure_filter(struct ieee80211_local *local)
4150c572 37{
3ac64bee 38 u64 mc;
4150c572
JB
39 unsigned int changed_flags;
40 unsigned int new_flags = 0;
41
53918994 42 if (atomic_read(&local->iff_allmultis))
4150c572
JB
43 new_flags |= FIF_ALLMULTI;
44
8a690674
BG
45 if (local->monitors || test_bit(SCAN_SW_SCANNING, &local->scanning) ||
46 test_bit(SCAN_ONCHANNEL_SCANNING, &local->scanning))
8cc9a739
MW
47 new_flags |= FIF_BCN_PRBRESP_PROMISC;
48
7be5086d
JB
49 if (local->fif_probe_req || local->probe_req_reg)
50 new_flags |= FIF_PROBE_REQ;
51
8cc9a739
MW
52 if (local->fif_fcsfail)
53 new_flags |= FIF_FCSFAIL;
54
55 if (local->fif_plcpfail)
56 new_flags |= FIF_PLCPFAIL;
57
58 if (local->fif_control)
59 new_flags |= FIF_CONTROL;
60
61 if (local->fif_other_bss)
62 new_flags |= FIF_OTHER_BSS;
4150c572 63
e3b90ca2
IP
64 if (local->fif_pspoll)
65 new_flags |= FIF_PSPOLL;
66
873b1cf6
JM
67 if (local->rx_mcast_action_reg)
68 new_flags |= FIF_MCAST_ACTION;
69
3ac64bee 70 spin_lock_bh(&local->filter_lock);
4150c572
JB
71 changed_flags = local->filter_flags ^ new_flags;
72
22bedad3 73 mc = drv_prepare_multicast(local, &local->mc_list);
3ac64bee
JB
74 spin_unlock_bh(&local->filter_lock);
75
4150c572
JB
76 /* be a bit nasty */
77 new_flags |= (1<<31);
78
3ac64bee 79 drv_configure_filter(local, changed_flags, &new_flags, mc);
4150c572
JB
80
81 WARN_ON(new_flags & (1<<31));
82
83 local->filter_flags = new_flags & ~(1<<31);
84}
85
3ac64bee
JB
86static void ieee80211_reconfig_filter(struct work_struct *work)
87{
88 struct ieee80211_local *local =
89 container_of(work, struct ieee80211_local, reconfig_filter);
90
91 ieee80211_configure_filter(local);
92}
93
55de908a 94static u32 ieee80211_hw_conf_chan(struct ieee80211_local *local)
b2c258fb 95{
1ea6f9c0 96 struct ieee80211_sub_if_data *sdata;
675a0b04 97 struct cfg80211_chan_def chandef = {};
55de908a 98 u32 changed = 0;
e8975581 99 int power;
ffd2778b 100 u32 offchannel_flag;
f0706e82 101
ffd2778b 102 offchannel_flag = local->hw.conf.flags & IEEE80211_CONF_OFFCHANNEL;
675a0b04 103
7ca15a0a
SW
104 if (local->scan_chandef.chan) {
105 chandef = local->scan_chandef;
b23b025f 106 } else if (local->tmp_channel) {
675a0b04
KB
107 chandef.chan = local->tmp_channel;
108 chandef.width = NL80211_CHAN_WIDTH_20_NOHT;
109 chandef.center_freq1 = chandef.chan->center_freq;
b6011960 110 chandef.freq1_offset = chandef.chan->freq_offset;
675a0b04
KB
111 } else
112 chandef = local->_oper_chandef;
113
114 WARN(!cfg80211_chandef_valid(&chandef),
b6011960
TP
115 "control:%d.%03d MHz width:%d center: %d.%03d/%d MHz",
116 chandef.chan->center_freq, chandef.chan->freq_offset,
117 chandef.width, chandef.center_freq1, chandef.freq1_offset,
118 chandef.center_freq2);
675a0b04
KB
119
120 if (!cfg80211_chandef_identical(&chandef, &local->_oper_chandef))
b23b025f
BG
121 local->hw.conf.flags |= IEEE80211_CONF_OFFCHANNEL;
122 else
123 local->hw.conf.flags &= ~IEEE80211_CONF_OFFCHANNEL;
124
ffd2778b 125 offchannel_flag ^= local->hw.conf.flags & IEEE80211_CONF_OFFCHANNEL;
f0706e82 126
675a0b04
KB
127 if (offchannel_flag ||
128 !cfg80211_chandef_identical(&local->hw.conf.chandef,
129 &local->_oper_chandef)) {
130 local->hw.conf.chandef = chandef;
e8975581
JB
131 changed |= IEEE80211_CONF_CHANGE_CHANNEL;
132 }
8318d78a 133
0f78231b
JB
134 if (!conf_is_ht(&local->hw.conf)) {
135 /*
136 * mac80211.h documents that this is only valid
137 * when the channel is set to an HT type, and
138 * that otherwise STATIC is used.
139 */
140 local->hw.conf.smps_mode = IEEE80211_SMPS_STATIC;
141 } else if (local->hw.conf.smps_mode != local->smps_mode) {
142 local->hw.conf.smps_mode = local->smps_mode;
143 changed |= IEEE80211_CONF_CHANGE_SMPS;
144 }
145
0430c883 146 power = ieee80211_chandef_max_power(&chandef);
a8302de9 147
1ea6f9c0
JB
148 rcu_read_lock();
149 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
150 if (!rcu_access_pointer(sdata->vif.chanctx_conf))
151 continue;
764152ff
FF
152 if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
153 continue;
db6d9e9e
BG
154 if (sdata->vif.bss_conf.txpower == INT_MIN)
155 continue;
1ea6f9c0
JB
156 power = min(power, sdata->vif.bss_conf.txpower);
157 }
158 rcu_read_unlock();
a8302de9 159
e8975581
JB
160 if (local->hw.conf.power_level != power) {
161 changed |= IEEE80211_CONF_CHANGE_POWER;
162 local->hw.conf.power_level = power;
163 }
b2c258fb 164
55de908a
JB
165 return changed;
166}
167
168int ieee80211_hw_config(struct ieee80211_local *local, u32 changed)
169{
170 int ret = 0;
171
172 might_sleep();
173
174 if (!local->use_chanctx)
175 changed |= ieee80211_hw_conf_chan(local);
176 else
177 changed &= ~(IEEE80211_CONF_CHANGE_CHANNEL |
178 IEEE80211_CONF_CHANGE_POWER);
179
e8975581 180 if (changed && local->open_count) {
24487981 181 ret = drv_config(local, changed);
d73782fd 182 /*
447107fb 183 * Goal:
d73782fd
JB
184 * HW reconfiguration should never fail, the driver has told
185 * us what it can support so it should live up to that promise.
447107fb
RC
186 *
187 * Current status:
188 * rfkill is not integrated with mac80211 and a
189 * configuration command can thus fail if hardware rfkill
190 * is enabled
191 *
192 * FIXME: integrate rfkill with mac80211 and then add this
193 * WARN_ON() back
194 *
d73782fd 195 */
447107fb 196 /* WARN_ON(ret); */
d73782fd 197 }
f0706e82 198
b2c258fb
JB
199 return ret;
200}
f0706e82 201
471b3efd
JB
202void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
203 u32 changed)
d9430a32 204{
471b3efd
JB
205 struct ieee80211_local *local = sdata->local;
206
990baec0 207 if (!changed || sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
471b3efd
JB
208 return;
209
12375ef9 210 drv_bss_info_changed(local, sdata, &sdata->vif.bss_conf, changed);
d9430a32
DD
211}
212
f698d856 213u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata)
d9430a32 214{
bda3933a
JB
215 sdata->vif.bss_conf.use_cts_prot = false;
216 sdata->vif.bss_conf.use_short_preamble = false;
217 sdata->vif.bss_conf.use_short_slot = false;
7a5158ef
JB
218 return BSS_CHANGED_ERP_CTS_PROT |
219 BSS_CHANGED_ERP_PREAMBLE |
220 BSS_CHANGED_ERP_SLOT;
d9430a32
DD
221}
222
f0706e82
JB
223static void ieee80211_tasklet_handler(unsigned long data)
224{
225 struct ieee80211_local *local = (struct ieee80211_local *) data;
226 struct sk_buff *skb;
f0706e82
JB
227
228 while ((skb = skb_dequeue(&local->skb_queue)) ||
229 (skb = skb_dequeue(&local->skb_queue_unreliable))) {
230 switch (skb->pkt_type) {
231 case IEEE80211_RX_MSG:
51fb61e7 232 /* Clear skb->pkt_type in order to not confuse kernel
f0706e82
JB
233 * netstack. */
234 skb->pkt_type = 0;
005e472b 235 ieee80211_rx(&local->hw, skb);
f0706e82
JB
236 break;
237 case IEEE80211_TX_STATUS_MSG:
f0706e82 238 skb->pkt_type = 0;
005e472b 239 ieee80211_tx_status(&local->hw, skb);
f0706e82 240 break;
f4ea83dd 241 default:
5e3f3089
LF
242 WARN(1, "mac80211: Packet is of unknown type %d\n",
243 skb->pkt_type);
f0706e82
JB
244 dev_kfree_skb(skb);
245 break;
246 }
247 }
248}
249
f2753ddb
JB
250static void ieee80211_restart_work(struct work_struct *work)
251{
252 struct ieee80211_local *local =
253 container_of(work, struct ieee80211_local, restart_work);
ab499db8 254 struct ieee80211_sub_if_data *sdata;
f2753ddb 255
bc86863d
SG
256 /* wait for scan work complete */
257 flush_workqueue(local->workqueue);
2bc533bd 258 flush_work(&local->sched_scan_stopped_work);
bc86863d 259
d43c6b6e
DS
260 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning),
261 "%s called with hardware scan in progress\n", __func__);
bc86863d 262
4a199068 263 flush_work(&local->radar_detected_work);
f2753ddb 264 rtnl_lock();
f3ffb6c3
EG
265 list_for_each_entry(sdata, &local->interfaces, list) {
266 /*
267 * XXX: there may be more work for other vif types and even
268 * for station mode: a good thing would be to run most of
269 * the iface type's dependent _stop (ieee80211_mg_stop,
270 * ieee80211_ibss_stop) etc...
271 * For now, fix only the specific bug that was seen: race
272 * between csa_connection_drop_work and us.
273 */
274 if (sdata->vif.type == NL80211_IFTYPE_STATION) {
275 /*
276 * This worker is scheduled from the iface worker that
277 * runs on mac80211's workqueue, so we can't be
278 * scheduling this worker after the cancel right here.
279 * The exception is ieee80211_chswitch_done.
280 * Then we can have a race...
281 */
282 cancel_work_sync(&sdata->u.mgd.csa_connection_drop_work);
283 }
ab499db8 284 flush_delayed_work(&sdata->dec_tailroom_needed_wk);
f3ffb6c3 285 }
4136c422 286 ieee80211_scan_cancel(local);
470f4d61
EP
287
288 /* make sure any new ROC will consider local->in_reconfig */
289 flush_delayed_work(&local->roc_work);
290 flush_work(&local->hw_roc_done);
291
2316380f
SS
292 /* wait for all packet processing to be done */
293 synchronize_net();
294
f2753ddb
JB
295 ieee80211_reconfig(local);
296 rtnl_unlock();
297}
298
299void ieee80211_restart_hw(struct ieee80211_hw *hw)
300{
301 struct ieee80211_local *local = hw_to_local(hw);
302
b5878a2d
JB
303 trace_api_restart_hw(local);
304
b196d031
MB
305 wiphy_info(hw->wiphy,
306 "Hardware restart was requested\n");
307
18145c69 308 /* use this reason, ieee80211_reconfig will unblock it */
445ea4e8 309 ieee80211_stop_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
cca07b00
LC
310 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
311 false);
f2753ddb 312
04800ada
AN
313 /*
314 * Stop all Rx during the reconfig. We don't want state changes
315 * or driver callbacks while this is in progress.
316 */
317 local->in_reconfig = true;
318 barrier();
319
43d6df00 320 queue_work(system_freezable_wq, &local->restart_work);
f2753ddb
JB
321}
322EXPORT_SYMBOL(ieee80211_restart_hw);
323
26b36cfe 324#ifdef CONFIG_INET
2b2c009e
JO
325static int ieee80211_ifa_changed(struct notifier_block *nb,
326 unsigned long data, void *arg)
327{
328 struct in_ifaddr *ifa = arg;
329 struct ieee80211_local *local =
330 container_of(nb, struct ieee80211_local,
331 ifa_notifier);
332 struct net_device *ndev = ifa->ifa_dev->dev;
333 struct wireless_dev *wdev = ndev->ieee80211_ptr;
68542962 334 struct in_device *idev;
2b2c009e 335 struct ieee80211_sub_if_data *sdata;
68542962 336 struct ieee80211_bss_conf *bss_conf;
2b2c009e 337 struct ieee80211_if_managed *ifmgd;
68542962 338 int c = 0;
2b2c009e
JO
339
340 /* Make sure it's our interface that got changed */
341 if (!wdev)
342 return NOTIFY_DONE;
343
344 if (wdev->wiphy != local->hw.wiphy)
345 return NOTIFY_DONE;
346
2b2c009e 347 sdata = IEEE80211_DEV_TO_SUB_IF(ndev);
68542962 348 bss_conf = &sdata->vif.bss_conf;
2b2c009e
JO
349
350 /* ARP filtering is only supported in managed mode */
351 if (sdata->vif.type != NL80211_IFTYPE_STATION)
352 return NOTIFY_DONE;
353
95ae6b22 354 idev = __in_dev_get_rtnl(sdata->dev);
68542962
JO
355 if (!idev)
356 return NOTIFY_DONE;
357
2b2c009e 358 ifmgd = &sdata->u.mgd;
8d61ffa5 359 sdata_lock(sdata);
68542962
JO
360
361 /* Copy the addresses to the bss_conf list */
2638eb8b 362 ifa = rtnl_dereference(idev->ifa_list);
0f19b41e
JB
363 while (ifa) {
364 if (c < IEEE80211_BSS_ARP_ADDR_LIST_LEN)
365 bss_conf->arp_addr_list[c] = ifa->ifa_address;
2638eb8b 366 ifa = rtnl_dereference(ifa->ifa_next);
68542962
JO
367 c++;
368 }
369
68542962
JO
370 bss_conf->arp_addr_cnt = c;
371
53d69c39 372 /* Configure driver only if associated (which also implies it is up) */
0f19b41e 373 if (ifmgd->associated)
68542962
JO
374 ieee80211_bss_info_change_notify(sdata,
375 BSS_CHANGED_ARP_FILTER);
68542962 376
8d61ffa5 377 sdata_unlock(sdata);
2b2c009e 378
8bd811aa 379 return NOTIFY_OK;
2b2c009e 380}
26b36cfe 381#endif
2b2c009e 382
a65240c1
JB
383#if IS_ENABLED(CONFIG_IPV6)
384static int ieee80211_ifa6_changed(struct notifier_block *nb,
385 unsigned long data, void *arg)
386{
387 struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)arg;
388 struct inet6_dev *idev = ifa->idev;
389 struct net_device *ndev = ifa->idev->dev;
390 struct ieee80211_local *local =
391 container_of(nb, struct ieee80211_local, ifa6_notifier);
392 struct wireless_dev *wdev = ndev->ieee80211_ptr;
393 struct ieee80211_sub_if_data *sdata;
394
395 /* Make sure it's our interface that got changed */
396 if (!wdev || wdev->wiphy != local->hw.wiphy)
397 return NOTIFY_DONE;
398
399 sdata = IEEE80211_DEV_TO_SUB_IF(ndev);
400
401 /*
402 * For now only support station mode. This is mostly because
403 * doing AP would have to handle AP_VLAN in some way ...
404 */
405 if (sdata->vif.type != NL80211_IFTYPE_STATION)
406 return NOTIFY_DONE;
407
408 drv_ipv6_addr_change(local, sdata, idev);
409
8bd811aa 410 return NOTIFY_OK;
a65240c1
JB
411}
412#endif
413
2e161f78
JB
414/* There isn't a lot of sense in it, but you can transmit anything you like */
415static const struct ieee80211_txrx_stypes
416ieee80211_default_mgmt_stypes[NUM_NL80211_IFTYPES] = {
417 [NL80211_IFTYPE_ADHOC] = {
418 .tx = 0xffff,
3bfda62c
WH
419 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
420 BIT(IEEE80211_STYPE_AUTH >> 4) |
41e31b8b
AQ
421 BIT(IEEE80211_STYPE_DEAUTH >> 4) |
422 BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
2e161f78
JB
423 },
424 [NL80211_IFTYPE_STATION] = {
425 .tx = 0xffff,
ff74c51e
IP
426 /*
427 * To support Pre Association Security Negotiation (PASN) while
428 * already associated to one AP, allow user space to register to
429 * Rx authentication frames, so that the user space logic would
430 * be able to receive/handle authentication frames from a
431 * different AP as part of PASN.
432 * It is expected that user space would intelligently register
433 * for Rx authentication frames, i.e., only when PASN is used
434 * and configure a match filter only for PASN authentication
435 * algorithm, as otherwise the MLME functionality of mac80211
436 * would be broken.
437 */
2e161f78 438 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
ff74c51e 439 BIT(IEEE80211_STYPE_AUTH >> 4) |
2e161f78
JB
440 BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
441 },
442 [NL80211_IFTYPE_AP] = {
443 .tx = 0xffff,
444 .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) |
445 BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) |
446 BIT(IEEE80211_STYPE_PROBE_REQ >> 4) |
447 BIT(IEEE80211_STYPE_DISASSOC >> 4) |
448 BIT(IEEE80211_STYPE_AUTH >> 4) |
449 BIT(IEEE80211_STYPE_DEAUTH >> 4) |
450 BIT(IEEE80211_STYPE_ACTION >> 4),
451 },
452 [NL80211_IFTYPE_AP_VLAN] = {
453 /* copy AP */
454 .tx = 0xffff,
455 .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) |
456 BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) |
457 BIT(IEEE80211_STYPE_PROBE_REQ >> 4) |
458 BIT(IEEE80211_STYPE_DISASSOC >> 4) |
459 BIT(IEEE80211_STYPE_AUTH >> 4) |
460 BIT(IEEE80211_STYPE_DEAUTH >> 4) |
2ca27bcf
JB
461 BIT(IEEE80211_STYPE_ACTION >> 4),
462 },
463 [NL80211_IFTYPE_P2P_CLIENT] = {
464 .tx = 0xffff,
465 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
466 BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
467 },
468 [NL80211_IFTYPE_P2P_GO] = {
469 .tx = 0xffff,
470 .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) |
471 BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) |
472 BIT(IEEE80211_STYPE_PROBE_REQ >> 4) |
2e161f78
JB
473 BIT(IEEE80211_STYPE_DISASSOC >> 4) |
474 BIT(IEEE80211_STYPE_AUTH >> 4) |
475 BIT(IEEE80211_STYPE_DEAUTH >> 4) |
476 BIT(IEEE80211_STYPE_ACTION >> 4),
477 },
c7108a71
JC
478 [NL80211_IFTYPE_MESH_POINT] = {
479 .tx = 0xffff,
71839121
JC
480 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
481 BIT(IEEE80211_STYPE_AUTH >> 4) |
482 BIT(IEEE80211_STYPE_DEAUTH >> 4),
c7108a71 483 },
f142c6b9
JB
484 [NL80211_IFTYPE_P2P_DEVICE] = {
485 .tx = 0xffff,
486 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
487 BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
488 },
2e161f78
JB
489};
490
ef96a842
BG
491static const struct ieee80211_ht_cap mac80211_ht_capa_mod_mask = {
492 .ampdu_params_info = IEEE80211_HT_AMPDU_PARM_FACTOR |
493 IEEE80211_HT_AMPDU_PARM_DENSITY,
494
495 .cap_info = cpu_to_le16(IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
496 IEEE80211_HT_CAP_MAX_AMSDU |
bc0784d9 497 IEEE80211_HT_CAP_SGI_20 |
a2e7495d 498 IEEE80211_HT_CAP_SGI_40 |
d9bb4108
SM
499 IEEE80211_HT_CAP_TX_STBC |
500 IEEE80211_HT_CAP_RX_STBC |
9a07bf50
JM
501 IEEE80211_HT_CAP_LDPC_CODING |
502 IEEE80211_HT_CAP_40MHZ_INTOLERANT),
ef96a842
BG
503 .mcs = {
504 .rx_mask = { 0xff, 0xff, 0xff, 0xff, 0xff,
505 0xff, 0xff, 0xff, 0xff, 0xff, },
506 },
507};
508
dd5ecfea
JB
509static const struct ieee80211_vht_cap mac80211_vht_capa_mod_mask = {
510 .vht_cap_info =
511 cpu_to_le32(IEEE80211_VHT_CAP_RXLDPC |
512 IEEE80211_VHT_CAP_SHORT_GI_80 |
513 IEEE80211_VHT_CAP_SHORT_GI_160 |
67d1ba8a 514 IEEE80211_VHT_CAP_RXSTBC_MASK |
dd5ecfea
JB
515 IEEE80211_VHT_CAP_TXSTBC |
516 IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE |
517 IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE |
518 IEEE80211_VHT_CAP_TX_ANTENNA_PATTERN |
519 IEEE80211_VHT_CAP_RX_ANTENNA_PATTERN |
520 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK),
521 .supp_mcs = {
522 .rx_mcs_map = cpu_to_le16(~0),
523 .tx_mcs_map = cpu_to_le16(~0),
524 },
525};
526
ad28757e
BG
527struct ieee80211_hw *ieee80211_alloc_hw_nm(size_t priv_data_len,
528 const struct ieee80211_ops *ops,
529 const char *requested_name)
f0706e82 530{
f0706e82 531 struct ieee80211_local *local;
96f5e66e 532 int priv_size, i;
f0706e82 533 struct wiphy *wiphy;
fe57d9f5 534 bool use_chanctx;
f0706e82 535
c0af0734
JB
536 if (WARN_ON(!ops->tx || !ops->start || !ops->stop || !ops->config ||
537 !ops->add_interface || !ops->remove_interface ||
538 !ops->configure_filter))
539 return NULL;
540
f09603a2
JB
541 if (WARN_ON(ops->sta_state && (ops->sta_add || ops->sta_remove)))
542 return NULL;
543
e269d860
JB
544 /* check all or no channel context operations exist */
545 i = !!ops->add_chanctx + !!ops->remove_chanctx +
546 !!ops->change_chanctx + !!ops->assign_vif_chanctx +
547 !!ops->unassign_vif_chanctx;
548 if (WARN_ON(i != 0 && i != 5))
549 return NULL;
fe57d9f5 550 use_chanctx = i == 5;
e269d860 551
f0706e82
JB
552 /* Ensure 32-byte alignment of our private data and hw private data.
553 * We use the wiphy priv data for both our ieee80211_local and for
554 * the driver's private data
555 *
556 * In memory it'll be like this:
557 *
558 * +-------------------------+
559 * | struct wiphy |
560 * +-------------------------+
561 * | struct ieee80211_local |
562 * +-------------------------+
563 * | driver's private data |
564 * +-------------------------+
565 *
566 */
1ce8e7b5 567 priv_size = ALIGN(sizeof(*local), NETDEV_ALIGN) + priv_data_len;
f0706e82 568
ad28757e 569 wiphy = wiphy_new_nm(&mac80211_config_ops, priv_size, requested_name);
f0706e82
JB
570
571 if (!wiphy)
572 return NULL;
573
2e161f78
JB
574 wiphy->mgmt_stypes = ieee80211_default_mgmt_stypes;
575
207aba60
JB
576 wiphy->privid = mac80211_wiphy_privid;
577
9bc383de
JB
578 wiphy->flags |= WIPHY_FLAG_NETNS_OK |
579 WIPHY_FLAG_4ADDR_AP |
ee971924 580 WIPHY_FLAG_4ADDR_STATION |
7c4ef712 581 WIPHY_FLAG_REPORTS_OBSS |
81ddbb5c
JB
582 WIPHY_FLAG_OFFCHAN_TX;
583
8fa180bb 584 if (!use_chanctx || ops->remain_on_channel)
81ddbb5c 585 wiphy->flags |= WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL;
207aba60 586
b292219f
JB
587 wiphy->features |= NL80211_FEATURE_SK_TX_STATUS |
588 NL80211_FEATURE_SAE |
1ea6f9c0 589 NL80211_FEATURE_HT_IBSS |
a6dad6a2 590 NL80211_FEATURE_VIF_TXPOWER |
b5dfae02 591 NL80211_FEATURE_MAC_ON_CREATE |
90f9ba9b
JB
592 NL80211_FEATURE_USERSPACE_MPM |
593 NL80211_FEATURE_FULL_AP_CLIENT_STATE;
f3ca52aa 594 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_FILS_STA);
018f6fbf
DK
595 wiphy_ext_feature_set(wiphy,
596 NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211);
7f3f96ce
MT
597 wiphy_ext_feature_set(wiphy,
598 NL80211_EXT_FEATURE_CONTROL_PORT_NO_PREAUTH);
a7528198
MT
599 wiphy_ext_feature_set(wiphy,
600 NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211_TX_STATUS);
2032f3b2
TP
601 wiphy_ext_feature_set(wiphy,
602 NL80211_EXT_FEATURE_SCAN_FREQ_KHZ);
a729cff8 603
b9771d41 604 if (!ops->hw_scan) {
5c95b940
AQ
605 wiphy->features |= NL80211_FEATURE_LOW_PRIORITY_SCAN |
606 NL80211_FEATURE_AP_SCAN;
b9771d41
JB
607 /*
608 * if the driver behaves correctly using the probe request
609 * (template) from mac80211, then both of these should be
610 * supported even with hw scan - but let drivers opt in.
611 */
612 wiphy_ext_feature_set(wiphy,
613 NL80211_EXT_FEATURE_SCAN_RANDOM_SN);
614 wiphy_ext_feature_set(wiphy,
615 NL80211_EXT_FEATURE_SCAN_MIN_PREQ_CONTENT);
616 }
cd2bb512 617
207aba60
JB
618 if (!ops->set_key)
619 wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
18a83659 620
2fe4a29a
THJ
621 if (ops->wake_tx_queue)
622 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_TXQS);
623
f278ce4f
EG
624 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_RRM);
625
0c1ad2ca 626 wiphy->bss_priv_size = sizeof(struct ieee80211_bss);
f0706e82
JB
627
628 local = wiphy_priv(wiphy);
de95a54b 629
7bedd0cf
JB
630 if (sta_info_init(local))
631 goto err_free;
632
f0706e82
JB
633 local->hw.wiphy = wiphy;
634
1ce8e7b5 635 local->hw.priv = (char *)local + ALIGN(sizeof(*local), NETDEV_ALIGN);
f0706e82
JB
636
637 local->ops = ops;
fe57d9f5 638 local->use_chanctx = use_chanctx;
f0706e82 639
70e53669
WG
640 /*
641 * We need a bit of data queued to build aggregates properly, so
642 * instruct the TCP stack to allow more than a single ms of data
643 * to be queued in the stack. The value is a bit-shift of 1
5c14a4d0 644 * second, so 7 is ~8ms of queued data. Only affects local TCP
70e53669
WG
645 * sockets.
646 * This is the default, anyhow - drivers may need to override it
647 * for local reasons (longer buffers, longer completion time, or
648 * similar).
649 */
5c14a4d0 650 local->hw.tx_sk_pacing_shift = 7;
70e53669 651
e6a9854b
JB
652 /* set up some defaults */
653 local->hw.queues = 1;
654 local->hw.max_rates = 1;
78be49ec 655 local->hw.max_report_rates = 0;
b8042b3d
JB
656 local->hw.max_rx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF_HT;
657 local->hw.max_tx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF_HT;
3a25a8c8 658 local->hw.offchannel_tx_hw_queue = IEEE80211_INVAL_HW_QUEUE;
b9a5f8ca
JM
659 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
660 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
ac55d2fe
JB
661 local->hw.radiotap_mcs_details = IEEE80211_RADIOTAP_MCS_HAVE_MCS |
662 IEEE80211_RADIOTAP_MCS_HAVE_GI |
663 IEEE80211_RADIOTAP_MCS_HAVE_BW;
51648921
JB
664 local->hw.radiotap_vht_details = IEEE80211_RADIOTAP_VHT_KNOWN_GI |
665 IEEE80211_RADIOTAP_VHT_KNOWN_BANDWIDTH;
219c3867
AB
666 local->hw.uapsd_queues = IEEE80211_DEFAULT_UAPSD_QUEUES;
667 local->hw.uapsd_max_sp_len = IEEE80211_DEFAULT_MAX_SP_LEN;
06354665 668 local->hw.max_mtu = IEEE80211_MAX_DATA_LEN;
1ea6f9c0 669 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
ef96a842 670 wiphy->ht_capa_mod_mask = &mac80211_ht_capa_mod_mask;
dd5ecfea 671 wiphy->vht_capa_mod_mask = &mac80211_vht_capa_mod_mask;
f0706e82 672
e9a21949
LC
673 local->ext_capa[7] = WLAN_EXT_CAPA8_OPMODE_NOTIF;
674
675 wiphy->extended_capabilities = local->ext_capa;
676 wiphy->extended_capabilities_mask = local->ext_capa;
677 wiphy->extended_capabilities_len =
678 ARRAY_SIZE(local->ext_capa);
679
79010420 680 INIT_LIST_HEAD(&local->interfaces);
f64331d5 681 INIT_LIST_HEAD(&local->mon_list);
2f787b0b
YH
682
683 __hw_addr_init(&local->mc_list);
684
c771c9d8 685 mutex_init(&local->iflist_mtx);
a1699b75 686 mutex_init(&local->mtx);
f0706e82 687
ad0e2b5a 688 mutex_init(&local->key_mtx);
3b8d81e0 689 spin_lock_init(&local->filter_lock);
f9e124fb 690 spin_lock_init(&local->rx_path_lock);
ce7c9111
KV
691 spin_lock_init(&local->queue_stop_reason_lock);
692
18667600
THJ
693 for (i = 0; i < IEEE80211_NUM_ACS; i++) {
694 INIT_LIST_HEAD(&local->active_txqs[i]);
695 spin_lock_init(&local->active_txq_lock[i]);
3ace10f5
KY
696 local->aql_txq_limit_low[i] = IEEE80211_DEFAULT_AQL_TXQ_LIMIT_L;
697 local->aql_txq_limit_high[i] =
698 IEEE80211_DEFAULT_AQL_TXQ_LIMIT_H;
18667600 699 }
3ace10f5 700
911bde0f 701 local->airtime_flags = AIRTIME_USE_TX | AIRTIME_USE_RX;
3ace10f5
KY
702 local->aql_threshold = IEEE80211_AQL_THRESHOLD;
703 atomic_set(&local->aql_total_pending_airtime, 0);
18667600 704
d01a1e65
MK
705 INIT_LIST_HEAD(&local->chanctx_list);
706 mutex_init(&local->chanctx_mtx);
707
c2b13452 708 INIT_DELAYED_WORK(&local->scan_work, ieee80211_scan_work);
f0706e82 709
f2753ddb
JB
710 INIT_WORK(&local->restart_work, ieee80211_restart_work);
711
164eb02d
SW
712 INIT_WORK(&local->radar_detected_work,
713 ieee80211_dfs_radar_detected_work);
714
3ac64bee 715 INIT_WORK(&local->reconfig_filter, ieee80211_reconfig_filter);
0f78231b 716 local->smps_mode = IEEE80211_SMPS_OFF;
3ac64bee 717
520eb820
KV
718 INIT_WORK(&local->dynamic_ps_enable_work,
719 ieee80211_dynamic_ps_enable_work);
720 INIT_WORK(&local->dynamic_ps_disable_work,
721 ieee80211_dynamic_ps_disable_work);
34f11cd3 722 timer_setup(&local->dynamic_ps_timer, ieee80211_dynamic_ps_timer, 0);
520eb820 723
85a9994a
LC
724 INIT_WORK(&local->sched_scan_stopped_work,
725 ieee80211_sched_scan_stopped_work);
726
c8ff71e6
AN
727 INIT_WORK(&local->tdls_chsw_work, ieee80211_tdls_chsw_work);
728
a729cff8
JB
729 spin_lock_init(&local->ack_status_lock);
730 idr_init(&local->ack_status_frames);
a729cff8 731
a6a67db2 732 for (i = 0; i < IEEE80211_MAX_QUEUES; i++) {
2a577d98 733 skb_queue_head_init(&local->pending[i]);
a6a67db2
JB
734 atomic_set(&local->agg_queue_stop[i], 0);
735 }
f0706e82
JB
736 tasklet_init(&local->tx_pending_tasklet, ieee80211_tx_pending,
737 (unsigned long)local);
f0706e82 738
21a5d4c3
MP
739 if (ops->wake_tx_queue)
740 tasklet_init(&local->wake_txqs_tasklet, ieee80211_wake_txqs,
741 (unsigned long)local);
742
f0706e82
JB
743 tasklet_init(&local->tasklet,
744 ieee80211_tasklet_handler,
745 (unsigned long) local);
f0706e82
JB
746
747 skb_queue_head_init(&local->skb_queue);
748 skb_queue_head_init(&local->skb_queue_unreliable);
c8ff71e6 749 skb_queue_head_init(&local->skb_queue_tdls_chsw);
f0706e82 750
8d5c2585 751 ieee80211_alloc_led_names(local);
fe67c913 752
2eb278e0 753 ieee80211_roc_setup(local);
21f83589 754
99ee7cae
JB
755 local->hw.radiotap_timestamp.units_pos = -1;
756 local->hw.radiotap_timestamp.accuracy = -1;
757
005e472b 758 return &local->hw;
7bedd0cf
JB
759 err_free:
760 wiphy_free(wiphy);
761 return NULL;
f0706e82 762}
ad28757e 763EXPORT_SYMBOL(ieee80211_alloc_hw_nm);
f0706e82 764
2475b1cc 765static int ieee80211_init_cipher_suites(struct ieee80211_local *local)
f0706e82 766{
5fdb3735 767 bool have_wep = !fips_enabled; /* FIPS does not permit the use of RC4 */
30686bf7 768 bool have_mfp = ieee80211_hw_check(&local->hw, MFP_CAPABLE);
2475b1cc
MS
769 int n_suites = 0, r = 0, w = 0;
770 u32 *suites;
25e47c18 771 static const u32 cipher_suites[] = {
5daa8a8e 772 /* keep WEP first, it may be removed below */
25e47c18
JB
773 WLAN_CIPHER_SUITE_WEP40,
774 WLAN_CIPHER_SUITE_WEP104,
775 WLAN_CIPHER_SUITE_TKIP,
776 WLAN_CIPHER_SUITE_CCMP,
2b2ba0db 777 WLAN_CIPHER_SUITE_CCMP_256,
00b9cfa3
JM
778 WLAN_CIPHER_SUITE_GCMP,
779 WLAN_CIPHER_SUITE_GCMP_256,
25e47c18
JB
780
781 /* keep last -- depends on hw flags! */
56c52da2
JM
782 WLAN_CIPHER_SUITE_AES_CMAC,
783 WLAN_CIPHER_SUITE_BIP_CMAC_256,
8ade538b
JM
784 WLAN_CIPHER_SUITE_BIP_GMAC_128,
785 WLAN_CIPHER_SUITE_BIP_GMAC_256,
25e47c18 786 };
8318d78a 787
30686bf7 788 if (ieee80211_hw_check(&local->hw, SW_CRYPTO_CONTROL) ||
fa7e1fbc
JB
789 local->hw.wiphy->cipher_suites) {
790 /* If the driver advertises, or doesn't support SW crypto,
791 * we only need to remove WEP if necessary.
792 */
793 if (have_wep)
794 return 0;
795
796 /* well if it has _no_ ciphers ... fine */
797 if (!local->hw.wiphy->n_cipher_suites)
798 return 0;
799
800 /* Driver provides cipher suites, but we need to exclude WEP */
801 suites = kmemdup(local->hw.wiphy->cipher_suites,
802 sizeof(u32) * local->hw.wiphy->n_cipher_suites,
803 GFP_KERNEL);
804 if (!suites)
805 return -ENOMEM;
2475b1cc 806
fa7e1fbc
JB
807 for (r = 0; r < local->hw.wiphy->n_cipher_suites; r++) {
808 u32 suite = local->hw.wiphy->cipher_suites[r];
809
810 if (suite == WLAN_CIPHER_SUITE_WEP40 ||
811 suite == WLAN_CIPHER_SUITE_WEP104)
812 continue;
813 suites[w++] = suite;
814 }
815 } else if (!local->hw.cipher_schemes) {
816 /* If the driver doesn't have cipher schemes, there's nothing
817 * else to do other than assign the (software supported and
818 * perhaps offloaded) cipher suites.
819 */
2475b1cc
MS
820 local->hw.wiphy->cipher_suites = cipher_suites;
821 local->hw.wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
822
823 if (!have_mfp)
8ade538b 824 local->hw.wiphy->n_cipher_suites -= 4;
2475b1cc
MS
825
826 if (!have_wep) {
827 local->hw.wiphy->cipher_suites += 2;
828 local->hw.wiphy->n_cipher_suites -= 2;
829 }
830
fa7e1fbc 831 /* not dynamically allocated, so just return */
2475b1cc 832 return 0;
fa7e1fbc
JB
833 } else {
834 const struct ieee80211_cipher_scheme *cs;
2475b1cc 835
fa7e1fbc
JB
836 cs = local->hw.cipher_schemes;
837
838 /* Driver specifies cipher schemes only (but not cipher suites
839 * including the schemes)
840 *
00b9cfa3 841 * We start counting ciphers defined by schemes, TKIP, CCMP,
2b2ba0db 842 * CCMP-256, GCMP, and GCMP-256
2475b1cc 843 */
2b2ba0db 844 n_suites = local->hw.n_cipher_schemes + 5;
2475b1cc
MS
845
846 /* check if we have WEP40 and WEP104 */
847 if (have_wep)
848 n_suites += 2;
849
8ade538b
JM
850 /* check if we have AES_CMAC, BIP-CMAC-256, BIP-GMAC-128,
851 * BIP-GMAC-256
852 */
2475b1cc 853 if (have_mfp)
8ade538b 854 n_suites += 4;
2475b1cc 855
6da2ec56 856 suites = kmalloc_array(n_suites, sizeof(u32), GFP_KERNEL);
2475b1cc
MS
857 if (!suites)
858 return -ENOMEM;
859
860 suites[w++] = WLAN_CIPHER_SUITE_CCMP;
2b2ba0db 861 suites[w++] = WLAN_CIPHER_SUITE_CCMP_256;
2475b1cc 862 suites[w++] = WLAN_CIPHER_SUITE_TKIP;
00b9cfa3
JM
863 suites[w++] = WLAN_CIPHER_SUITE_GCMP;
864 suites[w++] = WLAN_CIPHER_SUITE_GCMP_256;
2475b1cc
MS
865
866 if (have_wep) {
867 suites[w++] = WLAN_CIPHER_SUITE_WEP40;
868 suites[w++] = WLAN_CIPHER_SUITE_WEP104;
869 }
870
56c52da2 871 if (have_mfp) {
2475b1cc 872 suites[w++] = WLAN_CIPHER_SUITE_AES_CMAC;
56c52da2 873 suites[w++] = WLAN_CIPHER_SUITE_BIP_CMAC_256;
8ade538b
JM
874 suites[w++] = WLAN_CIPHER_SUITE_BIP_GMAC_128;
875 suites[w++] = WLAN_CIPHER_SUITE_BIP_GMAC_256;
56c52da2 876 }
2475b1cc 877
e3a55b53 878 for (r = 0; r < local->hw.n_cipher_schemes; r++) {
2475b1cc 879 suites[w++] = cs[r].cipher;
94c78cb4
JB
880 if (WARN_ON(cs[r].pn_len > IEEE80211_MAX_PN_LEN)) {
881 kfree(suites);
e3a55b53 882 return -EINVAL;
94c78cb4 883 }
e3a55b53 884 }
2475b1cc
MS
885 }
886
887 local->hw.wiphy->cipher_suites = suites;
888 local->hw.wiphy->n_cipher_suites = w;
889 local->wiphy_ciphers_allocated = true;
890
891 return 0;
892}
893
894int ieee80211_register_hw(struct ieee80211_hw *hw)
895{
896 struct ieee80211_local *local = hw_to_local(hw);
897 int result, i;
57fbcce3 898 enum nl80211_band band;
2475b1cc 899 int channels, max_bitrates;
41cbb0f5 900 bool supp_ht, supp_vht, supp_he;
2475b1cc
MS
901 struct cfg80211_chan_def dflt_chandef = {};
902
30686bf7 903 if (ieee80211_hw_check(hw, QUEUE_CONTROL) &&
3a25a8c8
JB
904 (local->hw.offchannel_tx_hw_queue == IEEE80211_INVAL_HW_QUEUE ||
905 local->hw.offchannel_tx_hw_queue >= local->hw.queues))
906 return -EINVAL;
907
a7a6bdd0
AN
908 if ((hw->wiphy->features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH) &&
909 (!local->ops->tdls_channel_switch ||
8a4d32f3
AN
910 !local->ops->tdls_cancel_channel_switch ||
911 !local->ops->tdls_recv_channel_switch))
a7a6bdd0
AN
912 return -EOPNOTSUPP;
913
f3fe4e93
SS
914 if (WARN_ON(ieee80211_hw_check(hw, SUPPORTS_TX_FRAG) &&
915 !local->ops->set_frag_threshold))
916 return -EINVAL;
917
708d50ed
AB
918 if (WARN_ON(local->hw.wiphy->interface_modes &
919 BIT(NL80211_IFTYPE_NAN) &&
920 (!local->ops->start_nan || !local->ops->stop_nan)))
921 return -EINVAL;
922
38bb3e9d 923#ifdef CONFIG_PM
964dc9e2 924 if (hw->wiphy->wowlan && (!local->ops->suspend || !local->ops->resume))
eecc4800 925 return -EINVAL;
dfb89c56 926#endif
eecc4800 927
fe57d9f5
JB
928 if (!local->use_chanctx) {
929 for (i = 0; i < local->hw.wiphy->n_iface_combinations; i++) {
930 const struct ieee80211_iface_combination *comb;
931
932 comb = &local->hw.wiphy->iface_combinations[i];
933
934 if (comb->num_different_channels > 1)
935 return -EINVAL;
936 }
746a3365 937 } else {
fe57d9f5
JB
938 /*
939 * WDS is currently prohibited when channel contexts are used
940 * because there's no clear definition of which channel WDS
941 * type interfaces use
942 */
943 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_WDS))
944 return -EINVAL;
164eb02d 945
486cf4c0 946 /* DFS is not supported with multi-channel combinations yet */
164eb02d
SW
947 for (i = 0; i < local->hw.wiphy->n_iface_combinations; i++) {
948 const struct ieee80211_iface_combination *comb;
949
950 comb = &local->hw.wiphy->iface_combinations[i];
951
486cf4c0
MK
952 if (comb->radar_detect_widths &&
953 comb->num_different_channels > 1)
164eb02d
SW
954 return -EINVAL;
955 }
fe57d9f5
JB
956 }
957
72d78728 958 /* Only HW csum features are currently compatible with mac80211 */
07b83d2e 959 if (WARN_ON(hw->netdev_features & ~MAC80211_SUPPORTED_FEATURES))
72d78728
AN
960 return -EINVAL;
961
78be49ec
HS
962 if (hw->max_report_rates == 0)
963 hw->max_report_rates = hw->max_rates;
964
04ecd257
JB
965 local->rx_chains = 1;
966
8318d78a
JB
967 /*
968 * generic code guarantees at least one band,
969 * set this very early because much code assumes
970 * that hw.conf.channel is assigned
971 */
2a519311 972 channels = 0;
de95a54b 973 max_bitrates = 0;
5ef2d41a 974 supp_ht = false;
ba0afa2f 975 supp_vht = false;
41cbb0f5 976 supp_he = false;
57fbcce3 977 for (band = 0; band < NUM_NL80211_BANDS; band++) {
8318d78a
JB
978 struct ieee80211_supported_band *sband;
979
980 sband = local->hw.wiphy->bands[band];
de95a54b
JB
981 if (!sband)
982 continue;
fffa4b1c
KB
983
984 if (!dflt_chandef.chan) {
985 cfg80211_chandef_create(&dflt_chandef,
986 &sband->channels[0],
987 NL80211_CHAN_NO_HT);
8318d78a 988 /* init channel we're on */
fffa4b1c
KB
989 if (!local->use_chanctx && !local->_oper_chandef.chan) {
990 local->hw.conf.chandef = dflt_chandef;
991 local->_oper_chandef = dflt_chandef;
992 }
993 local->monitor_chandef = dflt_chandef;
8318d78a 994 }
fffa4b1c 995
de95a54b
JB
996 channels += sband->n_channels;
997
998 if (max_bitrates < sband->n_bitrates)
999 max_bitrates = sband->n_bitrates;
5ef2d41a 1000 supp_ht = supp_ht || sband->ht_cap.ht_supported;
ba0afa2f 1001 supp_vht = supp_vht || sband->vht_cap.vht_supported;
04ecd257 1002
41cbb0f5
LC
1003 if (!supp_he)
1004 supp_he = !!ieee80211_get_he_sta_cap(sband);
1005
75e296e9
JB
1006 /* HT, VHT, HE require QoS, thus >= 4 queues */
1007 if (WARN_ON(local->hw.queues < IEEE80211_NUM_ACS &&
1008 (supp_ht || supp_vht || supp_he)))
1009 return -EINVAL;
1010
43071d8f
FF
1011 if (!sband->ht_cap.ht_supported)
1012 continue;
04ecd257
JB
1013
1014 /* TODO: consider VHT for RX chains, hopefully it's the same */
43071d8f
FF
1015 local->rx_chains =
1016 max(ieee80211_mcs_to_chains(&sband->ht_cap.mcs),
1017 local->rx_chains);
1018
1019 /* no need to mask, SM_PS_DISABLED has all bits set */
1020 sband->ht_cap.cap |= WLAN_HT_CAP_SM_PS_DISABLED <<
1021 IEEE80211_HT_CAP_SM_PS_SHIFT;
8318d78a 1022 }
f0706e82 1023
db3bdcb9
MP
1024 /* if low-level driver supports AP, we also support VLAN.
1025 * drivers advertising SW_CRYPTO_CONTROL should enable AP_VLAN
1026 * based on their support to transmit SW encrypted packets.
1027 */
1028 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_AP) &&
1029 !ieee80211_hw_check(&local->hw, SW_CRYPTO_CONTROL)) {
7527a782
JB
1030 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP_VLAN);
1031 hw->wiphy->software_iftypes |= BIT(NL80211_IFTYPE_AP_VLAN);
1032 }
f59ac048
LR
1033
1034 /* mac80211 always supports monitor */
7527a782
JB
1035 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR);
1036 hw->wiphy->software_iftypes |= BIT(NL80211_IFTYPE_MONITOR);
1037
55de908a 1038 /* mac80211 doesn't support more than one IBSS interface right now */
8e621fc9
JB
1039 for (i = 0; i < hw->wiphy->n_iface_combinations; i++) {
1040 const struct ieee80211_iface_combination *c;
1041 int j;
1042
1043 c = &hw->wiphy->iface_combinations[i];
1044
8e621fc9
JB
1045 for (j = 0; j < c->n_limits; j++)
1046 if ((c->limits[j].types & BIT(NL80211_IFTYPE_ADHOC)) &&
1047 c->limits[j].max > 1)
1048 return -EINVAL;
1049 }
1050
5b0ec94f
JB
1051 local->int_scan_req = kzalloc(sizeof(*local->int_scan_req) +
1052 sizeof(void *) * channels, GFP_KERNEL);
1053 if (!local->int_scan_req)
1054 return -ENOMEM;
1055
57fbcce3 1056 for (band = 0; band < NUM_NL80211_BANDS; band++) {
5b0ec94f
JB
1057 if (!local->hw.wiphy->bands[band])
1058 continue;
1059 local->int_scan_req->rates[band] = (u32) -1;
1060 }
1061
5eb5a52d
JB
1062#ifndef CONFIG_MAC80211_MESH
1063 /* mesh depends on Kconfig, but drivers should set it if they want */
1064 local->hw.wiphy->interface_modes &= ~BIT(NL80211_IFTYPE_MESH_POINT);
1065#endif
1066
1570ca59
JC
1067 /* if the underlying driver supports mesh, mac80211 will (at least)
1068 * provide routing of mesh authentication frames to userspace */
1069 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_MESH_POINT))
1070 local->hw.wiphy->flags |= WIPHY_FLAG_MESH_AUTH;
1071
a621fa4d
JB
1072 /* mac80211 supports control port protocol changing */
1073 local->hw.wiphy->flags |= WIPHY_FLAG_CONTROL_PORT_PROTOCOL;
1074
30686bf7 1075 if (ieee80211_hw_check(&local->hw, SIGNAL_DBM)) {
77965c97 1076 local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
30686bf7 1077 } else if (ieee80211_hw_check(&local->hw, SIGNAL_UNSPEC)) {
77965c97 1078 local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC;
52512072 1079 if (hw->max_signal <= 0) {
1080 result = -EINVAL;
52e04b4c 1081 goto fail_workqueue;
52512072 1082 }
1083 }
77965c97 1084
3e47bf1c
AW
1085 /* Mac80211 and therefore all drivers using SW crypto only
1086 * are able to handle PTK rekeys and Extended Key ID.
622fce81 1087 */
3e47bf1c 1088 if (!local->ops->set_key) {
387bc002
AW
1089 wiphy_ext_feature_set(local->hw.wiphy,
1090 NL80211_EXT_FEATURE_CAN_REPLACE_PTK0);
3e47bf1c
AW
1091 wiphy_ext_feature_set(local->hw.wiphy,
1092 NL80211_EXT_FEATURE_EXT_KEY_ID);
1093 }
387bc002 1094
a916062a
NC
1095 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_ADHOC))
1096 wiphy_ext_feature_set(local->hw.wiphy,
1097 NL80211_EXT_FEATURE_DEL_IBSS_STA);
1098
de95a54b
JB
1099 /*
1100 * Calculate scan IE length -- we need this to alloc
1101 * memory and to subtract from the driver limit. It
dc9f48ce 1102 * includes the DS Params, (extended) supported rates, and HT
de95a54b
JB
1103 * information -- SSID is the driver's responsibility.
1104 */
dc9f48ce
JM
1105 local->scan_ies_len = 4 + max_bitrates /* (ext) supp rates */ +
1106 3 /* DS Params */;
5ef2d41a
JB
1107 if (supp_ht)
1108 local->scan_ies_len += 2 + sizeof(struct ieee80211_ht_cap);
de95a54b 1109
d0e6c21a 1110 if (supp_vht)
ba0afa2f 1111 local->scan_ies_len +=
d4950281 1112 2 + sizeof(struct ieee80211_vht_cap);
ba0afa2f 1113
41cbb0f5
LC
1114 /* HE cap element is variable in size - set len to allow max size */
1115 /*
1116 * TODO: 1 is added at the end of the calculation to accommodate for
1117 * the temporary placing of the HE capabilities IE under EXT.
1118 * Remove it once it is placed in the final place.
1119 */
1120 if (supp_he)
1121 local->scan_ies_len +=
1122 2 + sizeof(struct ieee80211_he_cap_elem) +
1123 sizeof(struct ieee80211_he_mcs_nss_supp) +
1124 IEEE80211_HE_PPE_THRES_MAX_LEN + 1;
1125
de95a54b
JB
1126 if (!local->ops->hw_scan) {
1127 /* For hw_scan, driver needs to set these up. */
1128 local->hw.wiphy->max_scan_ssids = 4;
1129 local->hw.wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
1130 }
1131
1132 /*
1133 * If the driver supports any scan IEs, then assume the
1134 * limit includes the IEs mac80211 will add, otherwise
1135 * leave it at zero and let the driver sort it out; we
1136 * still pass our IEs to the driver but userspace will
1137 * not be allowed to in that case.
1138 */
1139 if (local->hw.wiphy->max_scan_ie_len)
1140 local->hw.wiphy->max_scan_ie_len -= local->scan_ies_len;
1141
2475b1cc
MS
1142 WARN_ON(!ieee80211_cs_list_valid(local->hw.cipher_schemes,
1143 local->hw.n_cipher_schemes));
1144
1145 result = ieee80211_init_cipher_suites(local);
1146 if (result < 0)
52e04b4c 1147 goto fail_workqueue;
25e47c18 1148
21f83589
JB
1149 if (!local->ops->remain_on_channel)
1150 local->hw.wiphy->max_remain_on_channel_duration = 5000;
a293911d 1151
dfe018bf
AN
1152 /* mac80211 based drivers don't support internal TDLS setup */
1153 if (local->hw.wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS)
1154 local->hw.wiphy->flags |= WIPHY_FLAG_TDLS_EXTERNAL_SETUP;
1155
e9a21949 1156 /* mac80211 supports eCSA, if the driver supports STA CSA at all */
30686bf7 1157 if (ieee80211_hw_check(&local->hw, CHANCTX_STA_CSA))
e9a21949
LC
1158 local->ext_capa[0] |= WLAN_EXT_CAPA1_EXT_CHANNEL_SWITCHING;
1159
caf56338
SS
1160 /* mac80211 supports multi BSSID, if the driver supports it */
1161 if (ieee80211_hw_check(&local->hw, SUPPORTS_MULTI_BSSID)) {
1162 local->hw.wiphy->support_mbssid = true;
1163 if (ieee80211_hw_check(&local->hw,
1164 SUPPORTS_ONLY_HE_MULTI_BSSID))
1165 local->hw.wiphy->support_only_he_mbssid = true;
1166 else
1167 local->ext_capa[2] |=
1168 WLAN_EXT_CAPA3_MULTI_BSSID_SUPPORT;
1169 }
1170
8552a434 1171 local->hw.wiphy->max_num_csa_counters = IEEE80211_MAX_CNTDWN_COUNTERS_NUM;
0d06d9ba 1172
e2530083
JB
1173 /*
1174 * We use the number of queues for feature tests (QoS, HT) internally
1175 * so restrict them appropriately.
1176 */
e2530083
JB
1177 if (hw->queues > IEEE80211_MAX_QUEUES)
1178 hw->queues = IEEE80211_MAX_QUEUES;
e2530083 1179
42935eca 1180 local->workqueue =
d8537548 1181 alloc_ordered_workqueue("%s", 0, wiphy_name(local->hw.wiphy));
42935eca 1182 if (!local->workqueue) {
f0706e82
JB
1183 result = -ENOMEM;
1184 goto fail_workqueue;
1185 }
1186
b306f453
JB
1187 /*
1188 * The hardware needs headroom for sending the frame,
1189 * and we need some headroom for passing the frame to monitor
1190 * interfaces, but never both at the same time.
1191 */
33ccad35 1192 local->tx_headroom = max_t(unsigned int , local->hw.extra_tx_headroom,
a2fe8166 1193 IEEE80211_TX_STATUS_HEADROOM);
b306f453 1194
b446918b
HS
1195 /*
1196 * if the driver doesn't specify a max listen interval we
1197 * use 5 which should be a safe default
1198 */
ea95bba4 1199 if (local->hw.max_listen_interval == 0)
b446918b 1200 local->hw.max_listen_interval = 5;
ea95bba4
TW
1201
1202 local->hw.conf.listen_interval = local->hw.max_listen_interval;
1203
ff616381 1204 local->dynamic_ps_forced_timeout = -1;
195e294d 1205
167e33f4
AB
1206 if (!local->hw.max_nan_de_entries)
1207 local->hw.max_nan_de_entries = IEEE80211_MAX_NAN_INSTANCE_ID;
1208
b4809e94
THJ
1209 if (!local->hw.weight_multiplier)
1210 local->hw.weight_multiplier = 1;
1211
4a65cc24 1212 ieee80211_wep_init(local);
d4c4a9a1 1213
24d47300
KB
1214 local->hw.conf.flags = IEEE80211_CONF_IDLE;
1215
b57e6b56
MSS
1216 ieee80211_led_init(local);
1217
dc8b274f
THJ
1218 result = ieee80211_txq_setup_flows(local);
1219 if (result)
1220 goto fail_flows;
1221
f0706e82 1222 rtnl_lock();
830f9038
JB
1223 result = ieee80211_init_rate_ctrl_alg(local,
1224 hw->rate_control_algorithm);
52e04b4c 1225 rtnl_unlock();
f0706e82 1226 if (result < 0) {
0fb9a9ec
JP
1227 wiphy_debug(local->hw.wiphy,
1228 "Failed to initialize rate control algorithm\n");
f0706e82
JB
1229 goto fail_rate;
1230 }
1231
09b4a4fa
JB
1232 if (local->rate_ctrl) {
1233 clear_bit(IEEE80211_HW_SUPPORTS_VHT_EXT_NSS_BW, hw->flags);
1234 if (local->rate_ctrl->ops->capa & RATE_CTRL_CAPA_VHT_EXT_NSS_BW)
1235 ieee80211_hw_set(hw, SUPPORTS_VHT_EXT_NSS_BW);
1236 }
1237
1238 /*
1239 * If the VHT capabilities don't have IEEE80211_VHT_EXT_NSS_BW_CAPABLE,
1240 * or have it when we don't, copy the sband structure and set/clear it.
1241 * This is necessary because rate scaling algorithms could be switched
1242 * and have different support values.
1243 * Print a message so that in the common case the reallocation can be
1244 * avoided.
1245 */
1246 BUILD_BUG_ON(NUM_NL80211_BANDS > 8 * sizeof(local->sband_allocated));
1247 for (band = 0; band < NUM_NL80211_BANDS; band++) {
1248 struct ieee80211_supported_band *sband;
1249 bool local_cap, ie_cap;
1250
1251 local_cap = ieee80211_hw_check(hw, SUPPORTS_VHT_EXT_NSS_BW);
1252
1253 sband = local->hw.wiphy->bands[band];
1254 if (!sband || !sband->vht_cap.vht_supported)
1255 continue;
1256
1257 ie_cap = !!(sband->vht_cap.vht_mcs.tx_highest &
1258 cpu_to_le16(IEEE80211_VHT_EXT_NSS_BW_CAPABLE));
1259
1260 if (local_cap == ie_cap)
1261 continue;
1262
1263 sband = kmemdup(sband, sizeof(*sband), GFP_KERNEL);
48f3b9e9
WY
1264 if (!sband) {
1265 result = -ENOMEM;
09b4a4fa 1266 goto fail_rate;
48f3b9e9 1267 }
09b4a4fa
JB
1268
1269 wiphy_dbg(hw->wiphy, "copying sband (band %d) due to VHT EXT NSS BW flag\n",
1270 band);
1271
1272 sband->vht_cap.vht_mcs.tx_highest ^=
1273 cpu_to_le16(IEEE80211_VHT_EXT_NSS_BW_CAPABLE);
1274
1275 local->hw.wiphy->bands[band] = sband;
1276 local->sband_allocated |= BIT(band);
1277 }
1278
52e04b4c
SG
1279 result = wiphy_register(local->hw.wiphy);
1280 if (result < 0)
1281 goto fail_wiphy_register;
1282
6cb5f3ea
JB
1283 debugfs_hw_add(local);
1284 rate_control_add_debugfs(local);
1285
52e04b4c
SG
1286 rtnl_lock();
1287
8dffff21 1288 /* add one default STA interface if supported */
e27513fb 1289 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_STATION) &&
30686bf7 1290 !ieee80211_hw_check(hw, NO_AUTO_VIF)) {
dd665d23
JB
1291 struct vif_params params = {0};
1292
6bab2e19 1293 result = ieee80211_if_add(local, "wlan%d", NET_NAME_ENUM, NULL,
dd665d23 1294 NL80211_IFTYPE_STATION, &params);
8dffff21 1295 if (result)
0fb9a9ec
JP
1296 wiphy_warn(local->hw.wiphy,
1297 "Failed to add default virtual iface\n");
8dffff21 1298 }
f0706e82 1299
f0706e82
JB
1300 rtnl_unlock();
1301
26b36cfe 1302#ifdef CONFIG_INET
2b2c009e
JO
1303 local->ifa_notifier.notifier_call = ieee80211_ifa_changed;
1304 result = register_inetaddr_notifier(&local->ifa_notifier);
1305 if (result)
1306 goto fail_ifa;
26b36cfe 1307#endif
2b2c009e 1308
a65240c1
JB
1309#if IS_ENABLED(CONFIG_IPV6)
1310 local->ifa6_notifier.notifier_call = ieee80211_ifa6_changed;
1311 result = register_inet6addr_notifier(&local->ifa6_notifier);
1312 if (result)
1313 goto fail_ifa6;
1314#endif
1315
f0706e82
JB
1316 return 0;
1317
a65240c1
JB
1318#if IS_ENABLED(CONFIG_IPV6)
1319 fail_ifa6:
93c08c32 1320#ifdef CONFIG_INET
a65240c1
JB
1321 unregister_inetaddr_notifier(&local->ifa_notifier);
1322#endif
1323#endif
1324#if defined(CONFIG_INET) || defined(CONFIG_IPV6)
2b2c009e 1325 fail_ifa:
93c08c32 1326#endif
52e04b4c
SG
1327 wiphy_unregister(local->hw.wiphy);
1328 fail_wiphy_register:
54330bf6
JB
1329 rtnl_lock();
1330 rate_control_deinitialize(local);
10f644a4 1331 ieee80211_remove_interfaces(local);
f0706e82 1332 rtnl_unlock();
52e04b4c 1333 fail_rate:
dc8b274f 1334 fail_flows:
6dd47d97 1335 ieee80211_led_exit(local);
42935eca 1336 destroy_workqueue(local->workqueue);
10f644a4 1337 fail_workqueue:
3ffc2a90
JB
1338 if (local->wiphy_ciphers_allocated)
1339 kfree(local->hw.wiphy->cipher_suites);
11ba964d 1340 kfree(local->int_scan_req);
f0706e82
JB
1341 return result;
1342}
1343EXPORT_SYMBOL(ieee80211_register_hw);
1344
f0706e82
JB
1345void ieee80211_unregister_hw(struct ieee80211_hw *hw)
1346{
1347 struct ieee80211_local *local = hw_to_local(hw);
f0706e82
JB
1348
1349 tasklet_kill(&local->tx_pending_tasklet);
1350 tasklet_kill(&local->tasklet);
1351
26b36cfe 1352#ifdef CONFIG_INET
2b2c009e 1353 unregister_inetaddr_notifier(&local->ifa_notifier);
26b36cfe 1354#endif
a65240c1
JB
1355#if IS_ENABLED(CONFIG_IPV6)
1356 unregister_inet6addr_notifier(&local->ifa6_notifier);
1357#endif
10f644a4 1358
f0706e82
JB
1359 rtnl_lock();
1360
79010420
JB
1361 /*
1362 * At this point, interface list manipulations are fine
1363 * because the driver cannot be handing us frames any
1364 * more and the tasklet is killed.
1365 */
75636525 1366 ieee80211_remove_interfaces(local);
5b2812e9 1367
f0706e82
JB
1368 rtnl_unlock();
1369
aaa016cc 1370 cancel_delayed_work_sync(&local->roc_work);
258086a4 1371 cancel_work_sync(&local->restart_work);
3ac64bee 1372 cancel_work_sync(&local->reconfig_filter);
c8ff71e6 1373 cancel_work_sync(&local->tdls_chsw_work);
18db594a 1374 flush_work(&local->sched_scan_stopped_work);
4a199068 1375 flush_work(&local->radar_detected_work);
3ac64bee 1376
f0706e82 1377 ieee80211_clear_tx_pending(local);
f0706e82
JB
1378 rate_control_deinitialize(local);
1379
f64f9e71
JP
1380 if (skb_queue_len(&local->skb_queue) ||
1381 skb_queue_len(&local->skb_queue_unreliable))
0fb9a9ec 1382 wiphy_warn(local->hw.wiphy, "skb_queue not empty\n");
f0706e82
JB
1383 skb_queue_purge(&local->skb_queue);
1384 skb_queue_purge(&local->skb_queue_unreliable);
c8ff71e6 1385 skb_queue_purge(&local->skb_queue_tdls_chsw);
f0706e82 1386
f0706e82 1387 wiphy_unregister(local->hw.wiphy);
52e04b4c 1388 destroy_workqueue(local->workqueue);
f0706e82 1389 ieee80211_led_exit(local);
5ba63533 1390 kfree(local->int_scan_req);
f0706e82
JB
1391}
1392EXPORT_SYMBOL(ieee80211_unregister_hw);
1393
a729cff8
JB
1394static int ieee80211_free_ack_frame(int id, void *p, void *data)
1395{
1396 WARN_ONCE(1, "Have pending ack frames!\n");
1397 kfree_skb(p);
1398 return 0;
1399}
1400
f0706e82
JB
1401void ieee80211_free_hw(struct ieee80211_hw *hw)
1402{
1403 struct ieee80211_local *local = hw_to_local(hw);
09b4a4fa 1404 enum nl80211_band band;
f0706e82 1405
c771c9d8 1406 mutex_destroy(&local->iflist_mtx);
a1699b75 1407 mutex_destroy(&local->mtx);
c771c9d8 1408
3ffc2a90
JB
1409 if (local->wiphy_ciphers_allocated)
1410 kfree(local->hw.wiphy->cipher_suites);
1411
a729cff8
JB
1412 idr_for_each(&local->ack_status_frames,
1413 ieee80211_free_ack_frame, NULL);
1414 idr_destroy(&local->ack_status_frames);
1415
54330bf6
JB
1416 sta_info_stop(local);
1417
8d5c2585
JB
1418 ieee80211_free_led_names(local);
1419
09b4a4fa
JB
1420 for (band = 0; band < NUM_NL80211_BANDS; band++) {
1421 if (!(local->sband_allocated & BIT(band)))
1422 continue;
1423 kfree(local->hw.wiphy->bands[band]);
1424 }
1425
f0706e82
JB
1426 wiphy_free(local->hw.wiphy);
1427}
1428EXPORT_SYMBOL(ieee80211_free_hw);
1429
f0706e82
JB
1430static int __init ieee80211_init(void)
1431{
1432 struct sk_buff *skb;
1433 int ret;
1434
e039fa4a
JB
1435 BUILD_BUG_ON(sizeof(struct ieee80211_tx_info) > sizeof(skb->cb));
1436 BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, driver_data) +
c6a1fa12 1437 IEEE80211_TX_INFO_DRIVER_DATA_SIZE > sizeof(skb->cb));
f0706e82 1438
cccf129f
FF
1439 ret = rc80211_minstrel_init();
1440 if (ret)
1441 return ret;
1442
47846c9b
JB
1443 ret = ieee80211_iface_init();
1444 if (ret)
1445 goto err_netdev;
e9f207f0 1446
f0706e82 1447 return 0;
47846c9b 1448 err_netdev:
47846c9b
JB
1449 rc80211_minstrel_exit();
1450
1451 return ret;
f0706e82
JB
1452}
1453
f0706e82
JB
1454static void __exit ieee80211_exit(void)
1455{
cccf129f 1456 rc80211_minstrel_exit();
ac71c691 1457
bf7cd94d 1458 ieee80211s_stop();
902acc78 1459
47846c9b 1460 ieee80211_iface_exit();
d07c7cf4
JB
1461
1462 rcu_barrier();
f0706e82
JB
1463}
1464
1465
ca9938fe 1466subsys_initcall(ieee80211_init);
f0706e82
JB
1467module_exit(ieee80211_exit);
1468
1469MODULE_DESCRIPTION("IEEE 802.11 subsystem");
1470MODULE_LICENSE("GPL");