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btrfs: fix allocation of free space cache v1 bitmap pages
[linux-2.6-block.git] / net / mac80211 / main.c
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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
3ac64bee 67 spin_lock_bh(&local->filter_lock);
4150c572
JB		 68 changed_flags = local->filter_flags ^ new_flags;
69
22bedad3 70 mc = drv_prepare_multicast(local, &local->mc_list);
3ac64bee
JB		 71 spin_unlock_bh(&local->filter_lock);
72
4150c572
JB		 73 /* be a bit nasty */
74 new_flags |= (1<<31);
75
3ac64bee 76 drv_configure_filter(local, changed_flags, &new_flags, mc);
4150c572
JB		 77
78 WARN_ON(new_flags & (1<<31));
79
80 local->filter_flags = new_flags & ~(1<<31);
81}
82
3ac64bee
JB		 83static void ieee80211_reconfig_filter(struct work_struct *work)
84{
85 struct ieee80211_local *local =
86 container_of(work, struct ieee80211_local, reconfig_filter);
87
88 ieee80211_configure_filter(local);
89}
90
55de908a 91static u32 ieee80211_hw_conf_chan(struct ieee80211_local *local)
b2c258fb 92{
1ea6f9c0 93 struct ieee80211_sub_if_data *sdata;
675a0b04 94 struct cfg80211_chan_def chandef = {};
55de908a 95 u32 changed = 0;
e8975581 96 int power;
ffd2778b 97 u32 offchannel_flag;
f0706e82 98
ffd2778b 99 offchannel_flag = local->hw.conf.flags & IEEE80211_CONF_OFFCHANNEL;
675a0b04 100
7ca15a0a
SW		 101 if (local->scan_chandef.chan) {
102 chandef = local->scan_chandef;
b23b025f 103 } else if (local->tmp_channel) {
675a0b04
KB		 104 chandef.chan = local->tmp_channel;
105 chandef.width = NL80211_CHAN_WIDTH_20_NOHT;
106 chandef.center_freq1 = chandef.chan->center_freq;
107 } else
108 chandef = local->_oper_chandef;
109
110 WARN(!cfg80211_chandef_valid(&chandef),
111 "control:%d MHz width:%d center: %d/%d MHz",
112 chandef.chan->center_freq, chandef.width,
113 chandef.center_freq1, chandef.center_freq2);
114
115 if (!cfg80211_chandef_identical(&chandef, &local->_oper_chandef))
b23b025f
BG		 116 local->hw.conf.flags |= IEEE80211_CONF_OFFCHANNEL;
117 else
118 local->hw.conf.flags &= ~IEEE80211_CONF_OFFCHANNEL;
119
ffd2778b 120 offchannel_flag ^= local->hw.conf.flags & IEEE80211_CONF_OFFCHANNEL;
f0706e82 121
675a0b04
KB		 122 if (offchannel_flag ||
123 !cfg80211_chandef_identical(&local->hw.conf.chandef,
124 &local->_oper_chandef)) {
125 local->hw.conf.chandef = chandef;
e8975581
JB		 126 changed |= IEEE80211_CONF_CHANGE_CHANNEL;
127 }
8318d78a 128
0f78231b
JB		 129 if (!conf_is_ht(&local->hw.conf)) {
130 /*
131 * mac80211.h documents that this is only valid
132 * when the channel is set to an HT type, and
133 * that otherwise STATIC is used.
134 */
135 local->hw.conf.smps_mode = IEEE80211_SMPS_STATIC;
136 } else if (local->hw.conf.smps_mode != local->smps_mode) {
137 local->hw.conf.smps_mode = local->smps_mode;
138 changed |= IEEE80211_CONF_CHANGE_SMPS;
139 }
140
0430c883 141 power = ieee80211_chandef_max_power(&chandef);
a8302de9 142
1ea6f9c0
JB		 143 rcu_read_lock();
144 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
145 if (!rcu_access_pointer(sdata->vif.chanctx_conf))
146 continue;
764152ff
FF		 147 if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
148 continue;
1ea6f9c0
JB		 149 power = min(power, sdata->vif.bss_conf.txpower);
150 }
151 rcu_read_unlock();
a8302de9 152
e8975581
JB		 153 if (local->hw.conf.power_level != power) {
154 changed |= IEEE80211_CONF_CHANGE_POWER;
155 local->hw.conf.power_level = power;
156 }
b2c258fb 157
55de908a
JB		 158 return changed;
159}
160
161int ieee80211_hw_config(struct ieee80211_local *local, u32 changed)
162{
163 int ret = 0;
164
165 might_sleep();
166
167 if (!local->use_chanctx)
168 changed |= ieee80211_hw_conf_chan(local);
169 else
170 changed &= ~(IEEE80211_CONF_CHANGE_CHANNEL |
171 IEEE80211_CONF_CHANGE_POWER);
172
e8975581 173 if (changed && local->open_count) {
24487981 174 ret = drv_config(local, changed);
d73782fd 175 /*
447107fb 176 * Goal:
d73782fd
JB		 177 * HW reconfiguration should never fail, the driver has told
178 * us what it can support so it should live up to that promise.
447107fb
RC		 179 *
180 * Current status:
181 * rfkill is not integrated with mac80211 and a
182 * configuration command can thus fail if hardware rfkill
183 * is enabled
184 *
185 * FIXME: integrate rfkill with mac80211 and then add this
186 * WARN_ON() back
187 *
d73782fd 188 */
447107fb 189 /* WARN_ON(ret); */
d73782fd 190 }
f0706e82 191
b2c258fb
JB		 192 return ret;
193}
f0706e82 194
471b3efd
JB		 195void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
196 u32 changed)
d9430a32 197{
471b3efd
JB		 198 struct ieee80211_local *local = sdata->local;
199
990baec0 200 if (!changed || sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
471b3efd
JB		 201 return;
202
12375ef9 203 drv_bss_info_changed(local, sdata, &sdata->vif.bss_conf, changed);
d9430a32
DD		 204}
205
f698d856 206u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata)
d9430a32 207{
bda3933a
JB		 208 sdata->vif.bss_conf.use_cts_prot = false;
209 sdata->vif.bss_conf.use_short_preamble = false;
210 sdata->vif.bss_conf.use_short_slot = false;
7a5158ef
JB		 211 return BSS_CHANGED_ERP_CTS_PROT |
212 BSS_CHANGED_ERP_PREAMBLE |
213 BSS_CHANGED_ERP_SLOT;
d9430a32
DD		 214}
215
f0706e82
JB		 216static void ieee80211_tasklet_handler(unsigned long data)
217{
218 struct ieee80211_local *local = (struct ieee80211_local *) data;
219 struct sk_buff *skb;
f0706e82
JB		 220
221 while ((skb = skb_dequeue(&local->skb_queue)) ||
222 (skb = skb_dequeue(&local->skb_queue_unreliable))) {
223 switch (skb->pkt_type) {
224 case IEEE80211_RX_MSG:
51fb61e7 225 /* Clear skb->pkt_type in order to not confuse kernel
f0706e82
JB		 226 * netstack. */
227 skb->pkt_type = 0;
005e472b 228 ieee80211_rx(&local->hw, skb);
f0706e82
JB		 229 break;
230 case IEEE80211_TX_STATUS_MSG:
f0706e82 231 skb->pkt_type = 0;
005e472b 232 ieee80211_tx_status(&local->hw, skb);
f0706e82 233 break;
f4ea83dd 234 default:
5e3f3089
LF		 235 WARN(1, "mac80211: Packet is of unknown type %d\n",
236 skb->pkt_type);
f0706e82
JB		 237 dev_kfree_skb(skb);
238 break;
239 }
240 }
241}
242
f2753ddb
JB		 243static void ieee80211_restart_work(struct work_struct *work)
244{
245 struct ieee80211_local *local =
246 container_of(work, struct ieee80211_local, restart_work);
ab499db8 247 struct ieee80211_sub_if_data *sdata;
f2753ddb 248
bc86863d
SG		 249 /* wait for scan work complete */
250 flush_workqueue(local->workqueue);
2bc533bd 251 flush_work(&local->sched_scan_stopped_work);
bc86863d 252
d43c6b6e
DS		 253 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning),
254 "%s called with hardware scan in progress\n", __func__);
bc86863d 255
4a199068 256 flush_work(&local->radar_detected_work);
f2753ddb 257 rtnl_lock();
f3ffb6c3
EG		 258 list_for_each_entry(sdata, &local->interfaces, list) {
259 /*
260 * XXX: there may be more work for other vif types and even
261 * for station mode: a good thing would be to run most of
262 * the iface type's dependent _stop (ieee80211_mg_stop,
263 * ieee80211_ibss_stop) etc...
264 * For now, fix only the specific bug that was seen: race
265 * between csa_connection_drop_work and us.
266 */
267 if (sdata->vif.type == NL80211_IFTYPE_STATION) {
268 /*
269 * This worker is scheduled from the iface worker that
270 * runs on mac80211's workqueue, so we can't be
271 * scheduling this worker after the cancel right here.
272 * The exception is ieee80211_chswitch_done.
273 * Then we can have a race...
274 */
275 cancel_work_sync(&sdata->u.mgd.csa_connection_drop_work);
276 }
ab499db8 277 flush_delayed_work(&sdata->dec_tailroom_needed_wk);
f3ffb6c3 278 }
4136c422 279 ieee80211_scan_cancel(local);
470f4d61
EP		 280
281 /* make sure any new ROC will consider local->in_reconfig */
282 flush_delayed_work(&local->roc_work);
283 flush_work(&local->hw_roc_done);
284
2316380f
SS		 285 /* wait for all packet processing to be done */
286 synchronize_net();
287
f2753ddb
JB		 288 ieee80211_reconfig(local);
289 rtnl_unlock();
290}
291
292void ieee80211_restart_hw(struct ieee80211_hw *hw)
293{
294 struct ieee80211_local *local = hw_to_local(hw);
295
b5878a2d
JB		 296 trace_api_restart_hw(local);
297
b196d031
MB		 298 wiphy_info(hw->wiphy,
299 "Hardware restart was requested\n");
300
18145c69 301 /* use this reason, ieee80211_reconfig will unblock it */
445ea4e8 302 ieee80211_stop_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
cca07b00
LC		 303 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
304 false);
f2753ddb 305
04800ada
AN		 306 /*
307 * Stop all Rx during the reconfig. We don't want state changes
308 * or driver callbacks while this is in progress.
309 */
310 local->in_reconfig = true;
311 barrier();
312
43d6df00 313 queue_work(system_freezable_wq, &local->restart_work);
f2753ddb
JB		 314}
315EXPORT_SYMBOL(ieee80211_restart_hw);
316
26b36cfe 317#ifdef CONFIG_INET
2b2c009e
JO		 318static int ieee80211_ifa_changed(struct notifier_block *nb,
319 unsigned long data, void *arg)
320{
321 struct in_ifaddr *ifa = arg;
322 struct ieee80211_local *local =
323 container_of(nb, struct ieee80211_local,
324 ifa_notifier);
325 struct net_device *ndev = ifa->ifa_dev->dev;
326 struct wireless_dev *wdev = ndev->ieee80211_ptr;
68542962 327 struct in_device *idev;
2b2c009e 328 struct ieee80211_sub_if_data *sdata;
68542962 329 struct ieee80211_bss_conf *bss_conf;
2b2c009e 330 struct ieee80211_if_managed *ifmgd;
68542962 331 int c = 0;
2b2c009e
JO		 332
333 /* Make sure it's our interface that got changed */
334 if (!wdev)
335 return NOTIFY_DONE;
336
337 if (wdev->wiphy != local->hw.wiphy)
338 return NOTIFY_DONE;
339
2b2c009e 340 sdata = IEEE80211_DEV_TO_SUB_IF(ndev);
68542962 341 bss_conf = &sdata->vif.bss_conf;
2b2c009e
JO		 342
343 /* ARP filtering is only supported in managed mode */
344 if (sdata->vif.type != NL80211_IFTYPE_STATION)
345 return NOTIFY_DONE;
346
95ae6b22 347 idev = __in_dev_get_rtnl(sdata->dev);
68542962
JO		 348 if (!idev)
349 return NOTIFY_DONE;
350
2b2c009e 351 ifmgd = &sdata->u.mgd;
8d61ffa5 352 sdata_lock(sdata);
68542962
JO		 353
354 /* Copy the addresses to the bss_conf list */
2638eb8b 355 ifa = rtnl_dereference(idev->ifa_list);
0f19b41e
JB		 356 while (ifa) {
357 if (c < IEEE80211_BSS_ARP_ADDR_LIST_LEN)
358 bss_conf->arp_addr_list[c] = ifa->ifa_address;
2638eb8b 359 ifa = rtnl_dereference(ifa->ifa_next);
68542962
JO		 360 c++;
361 }
362
68542962
JO		 363 bss_conf->arp_addr_cnt = c;
364
53d69c39 365 /* Configure driver only if associated (which also implies it is up) */
0f19b41e 366 if (ifmgd->associated)
68542962
JO		 367 ieee80211_bss_info_change_notify(sdata,
368 BSS_CHANGED_ARP_FILTER);
68542962 369
8d61ffa5 370 sdata_unlock(sdata);
2b2c009e 371
8bd811aa 372 return NOTIFY_OK;
2b2c009e 373}
26b36cfe 374#endif
2b2c009e 375
a65240c1
JB		 376#if IS_ENABLED(CONFIG_IPV6)
377static int ieee80211_ifa6_changed(struct notifier_block *nb,
378 unsigned long data, void *arg)
379{
380 struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)arg;
381 struct inet6_dev *idev = ifa->idev;
382 struct net_device *ndev = ifa->idev->dev;
383 struct ieee80211_local *local =
384 container_of(nb, struct ieee80211_local, ifa6_notifier);
385 struct wireless_dev *wdev = ndev->ieee80211_ptr;
386 struct ieee80211_sub_if_data *sdata;
387
388 /* Make sure it's our interface that got changed */
389 if (!wdev || wdev->wiphy != local->hw.wiphy)
390 return NOTIFY_DONE;
391
392 sdata = IEEE80211_DEV_TO_SUB_IF(ndev);
393
394 /*
395 * For now only support station mode. This is mostly because
396 * doing AP would have to handle AP_VLAN in some way ...
397 */
398 if (sdata->vif.type != NL80211_IFTYPE_STATION)
399 return NOTIFY_DONE;
400
401 drv_ipv6_addr_change(local, sdata, idev);
402
8bd811aa 403 return NOTIFY_OK;
a65240c1
JB		 404}
405#endif
406
2e161f78
JB		 407/* There isn't a lot of sense in it, but you can transmit anything you like */
408static const struct ieee80211_txrx_stypes
409ieee80211_default_mgmt_stypes[NUM_NL80211_IFTYPES] = {
410 [NL80211_IFTYPE_ADHOC] = {
411 .tx = 0xffff,
3bfda62c
WH		 412 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
413 BIT(IEEE80211_STYPE_AUTH >> 4) |
41e31b8b
AQ		 414 BIT(IEEE80211_STYPE_DEAUTH >> 4) |
415 BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
2e161f78
JB		 416 },
417 [NL80211_IFTYPE_STATION] = {
418 .tx = 0xffff,
419 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
420 BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
421 },
422 [NL80211_IFTYPE_AP] = {
423 .tx = 0xffff,
424 .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) |
425 BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) |
426 BIT(IEEE80211_STYPE_PROBE_REQ >> 4) |
427 BIT(IEEE80211_STYPE_DISASSOC >> 4) |
428 BIT(IEEE80211_STYPE_AUTH >> 4) |
429 BIT(IEEE80211_STYPE_DEAUTH >> 4) |
430 BIT(IEEE80211_STYPE_ACTION >> 4),
431 },
432 [NL80211_IFTYPE_AP_VLAN] = {
433 /* copy AP */
434 .tx = 0xffff,
435 .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) |
436 BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) |
437 BIT(IEEE80211_STYPE_PROBE_REQ >> 4) |
438 BIT(IEEE80211_STYPE_DISASSOC >> 4) |
439 BIT(IEEE80211_STYPE_AUTH >> 4) |
440 BIT(IEEE80211_STYPE_DEAUTH >> 4) |
2ca27bcf
JB		 441 BIT(IEEE80211_STYPE_ACTION >> 4),
442 },
443 [NL80211_IFTYPE_P2P_CLIENT] = {
444 .tx = 0xffff,
445 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
446 BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
447 },
448 [NL80211_IFTYPE_P2P_GO] = {
449 .tx = 0xffff,
450 .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) |
451 BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) |
452 BIT(IEEE80211_STYPE_PROBE_REQ >> 4) |
2e161f78
JB		 453 BIT(IEEE80211_STYPE_DISASSOC >> 4) |
454 BIT(IEEE80211_STYPE_AUTH >> 4) |
455 BIT(IEEE80211_STYPE_DEAUTH >> 4) |
456 BIT(IEEE80211_STYPE_ACTION >> 4),
457 },
c7108a71
JC		 458 [NL80211_IFTYPE_MESH_POINT] = {
459 .tx = 0xffff,
71839121
JC		 460 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
461 BIT(IEEE80211_STYPE_AUTH >> 4) |
462 BIT(IEEE80211_STYPE_DEAUTH >> 4),
c7108a71 463 },
f142c6b9
JB		 464 [NL80211_IFTYPE_P2P_DEVICE] = {
465 .tx = 0xffff,
466 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
467 BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
468 },
2e161f78
JB		 469};
470
ef96a842
BG		 471static const struct ieee80211_ht_cap mac80211_ht_capa_mod_mask = {
472 .ampdu_params_info = IEEE80211_HT_AMPDU_PARM_FACTOR |
473 IEEE80211_HT_AMPDU_PARM_DENSITY,
474
475 .cap_info = cpu_to_le16(IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
476 IEEE80211_HT_CAP_MAX_AMSDU |
bc0784d9 477 IEEE80211_HT_CAP_SGI_20 |
a2e7495d 478 IEEE80211_HT_CAP_SGI_40 |
d9bb4108
SM		 479 IEEE80211_HT_CAP_TX_STBC |
480 IEEE80211_HT_CAP_RX_STBC |
9a07bf50
JM		 481 IEEE80211_HT_CAP_LDPC_CODING |
482 IEEE80211_HT_CAP_40MHZ_INTOLERANT),
ef96a842
BG		 483 .mcs = {
484 .rx_mask = { 0xff, 0xff, 0xff, 0xff, 0xff,
485 0xff, 0xff, 0xff, 0xff, 0xff, },
486 },
487};
488
dd5ecfea
JB		 489static const struct ieee80211_vht_cap mac80211_vht_capa_mod_mask = {
490 .vht_cap_info =
491 cpu_to_le32(IEEE80211_VHT_CAP_RXLDPC |
492 IEEE80211_VHT_CAP_SHORT_GI_80 |
493 IEEE80211_VHT_CAP_SHORT_GI_160 |
67d1ba8a 494 IEEE80211_VHT_CAP_RXSTBC_MASK |
dd5ecfea
JB		 495 IEEE80211_VHT_CAP_TXSTBC |
496 IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE |
497 IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE |
498 IEEE80211_VHT_CAP_TX_ANTENNA_PATTERN |
499 IEEE80211_VHT_CAP_RX_ANTENNA_PATTERN |
500 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK),
501 .supp_mcs = {
502 .rx_mcs_map = cpu_to_le16(~0),
503 .tx_mcs_map = cpu_to_le16(~0),
504 },
505};
506
ad28757e
BG		 507struct ieee80211_hw *ieee80211_alloc_hw_nm(size_t priv_data_len,
508 const struct ieee80211_ops *ops,
509 const char *requested_name)
f0706e82 510{
f0706e82 511 struct ieee80211_local *local;
96f5e66e 512 int priv_size, i;
f0706e82 513 struct wiphy *wiphy;
fe57d9f5 514 bool use_chanctx;
f0706e82 515
c0af0734
JB		 516 if (WARN_ON(!ops->tx || !ops->start || !ops->stop || !ops->config ||
517 !ops->add_interface || !ops->remove_interface ||
518 !ops->configure_filter))
519 return NULL;
520
f09603a2
JB		 521 if (WARN_ON(ops->sta_state && (ops->sta_add || ops->sta_remove)))
522 return NULL;
523
e269d860
JB		 524 /* check all or no channel context operations exist */
525 i = !!ops->add_chanctx + !!ops->remove_chanctx +
526 !!ops->change_chanctx + !!ops->assign_vif_chanctx +
527 !!ops->unassign_vif_chanctx;
528 if (WARN_ON(i != 0 && i != 5))
529 return NULL;
fe57d9f5 530 use_chanctx = i == 5;
e269d860 531
f0706e82
JB		 532 /* Ensure 32-byte alignment of our private data and hw private data.
533 * We use the wiphy priv data for both our ieee80211_local and for
534 * the driver's private data
535 *
536 * In memory it'll be like this:
537 *
538 * +-------------------------+
539 * | struct wiphy |
540 * +-------------------------+
541 * | struct ieee80211_local |
542 * +-------------------------+
543 * | driver's private data |
544 * +-------------------------+
545 *
546 */
1ce8e7b5 547 priv_size = ALIGN(sizeof(*local), NETDEV_ALIGN) + priv_data_len;
f0706e82 548
ad28757e 549 wiphy = wiphy_new_nm(&mac80211_config_ops, priv_size, requested_name);
f0706e82
JB		 550
551 if (!wiphy)
552 return NULL;
553
2e161f78
JB		 554 wiphy->mgmt_stypes = ieee80211_default_mgmt_stypes;
555
207aba60
JB		 556 wiphy->privid = mac80211_wiphy_privid;
557
9bc383de
JB		 558 wiphy->flags |= WIPHY_FLAG_NETNS_OK |
559 WIPHY_FLAG_4ADDR_AP |
ee971924 560 WIPHY_FLAG_4ADDR_STATION |
7c4ef712 561 WIPHY_FLAG_REPORTS_OBSS |
81ddbb5c
JB		 562 WIPHY_FLAG_OFFCHAN_TX;
563
564 if (ops->remain_on_channel)
565 wiphy->flags |= WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL;
207aba60 566
b292219f
JB		 567 wiphy->features |= NL80211_FEATURE_SK_TX_STATUS |
568 NL80211_FEATURE_SAE |
1ea6f9c0 569 NL80211_FEATURE_HT_IBSS |
a6dad6a2 570 NL80211_FEATURE_VIF_TXPOWER |
b5dfae02 571 NL80211_FEATURE_MAC_ON_CREATE |
90f9ba9b
JB		 572 NL80211_FEATURE_USERSPACE_MPM |
573 NL80211_FEATURE_FULL_AP_CLIENT_STATE;
f3ca52aa 574 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_FILS_STA);
018f6fbf
DK		 575 wiphy_ext_feature_set(wiphy,
576 NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211);
a729cff8 577
b9771d41 578 if (!ops->hw_scan) {
5c95b940
AQ		 579 wiphy->features |= NL80211_FEATURE_LOW_PRIORITY_SCAN |
580 NL80211_FEATURE_AP_SCAN;
b9771d41
JB		 581 /*
582 * if the driver behaves correctly using the probe request
583 * (template) from mac80211, then both of these should be
584 * supported even with hw scan - but let drivers opt in.
585 */
586 wiphy_ext_feature_set(wiphy,
587 NL80211_EXT_FEATURE_SCAN_RANDOM_SN);
588 wiphy_ext_feature_set(wiphy,
589 NL80211_EXT_FEATURE_SCAN_MIN_PREQ_CONTENT);
590 }
cd2bb512 591
207aba60
JB		 592 if (!ops->set_key)
593 wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
18a83659 594
2fe4a29a
THJ		 595 if (ops->wake_tx_queue)
596 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_TXQS);
597
f278ce4f
EG		 598 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_RRM);
599
0c1ad2ca 600 wiphy->bss_priv_size = sizeof(struct ieee80211_bss);
f0706e82
JB		 601
602 local = wiphy_priv(wiphy);
de95a54b 603
7bedd0cf
JB		 604 if (sta_info_init(local))
605 goto err_free;
606
f0706e82
JB		 607 local->hw.wiphy = wiphy;
608
1ce8e7b5 609 local->hw.priv = (char *)local + ALIGN(sizeof(*local), NETDEV_ALIGN);
f0706e82
JB		 610
611 local->ops = ops;
fe57d9f5 612 local->use_chanctx = use_chanctx;
f0706e82 613
70e53669
WG		 614 /*
615 * We need a bit of data queued to build aggregates properly, so
616 * instruct the TCP stack to allow more than a single ms of data
617 * to be queued in the stack. The value is a bit-shift of 1
5c14a4d0 618 * second, so 7 is ~8ms of queued data. Only affects local TCP
70e53669
WG		 619 * sockets.
620 * This is the default, anyhow - drivers may need to override it
621 * for local reasons (longer buffers, longer completion time, or
622 * similar).
623 */
5c14a4d0 624 local->hw.tx_sk_pacing_shift = 7;
70e53669 625
e6a9854b
JB		 626 /* set up some defaults */
627 local->hw.queues = 1;
628 local->hw.max_rates = 1;
78be49ec 629 local->hw.max_report_rates = 0;
b8042b3d
JB		 630 local->hw.max_rx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF_HT;
631 local->hw.max_tx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF_HT;
3a25a8c8 632 local->hw.offchannel_tx_hw_queue = IEEE80211_INVAL_HW_QUEUE;
b9a5f8ca
JM		 633 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
634 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
ac55d2fe
JB		 635 local->hw.radiotap_mcs_details = IEEE80211_RADIOTAP_MCS_HAVE_MCS |
636 IEEE80211_RADIOTAP_MCS_HAVE_GI |
637 IEEE80211_RADIOTAP_MCS_HAVE_BW;
51648921
JB		 638 local->hw.radiotap_vht_details = IEEE80211_RADIOTAP_VHT_KNOWN_GI |
639 IEEE80211_RADIOTAP_VHT_KNOWN_BANDWIDTH;
219c3867
AB		 640 local->hw.uapsd_queues = IEEE80211_DEFAULT_UAPSD_QUEUES;
641 local->hw.uapsd_max_sp_len = IEEE80211_DEFAULT_MAX_SP_LEN;
1ea6f9c0 642 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
ef96a842 643 wiphy->ht_capa_mod_mask = &mac80211_ht_capa_mod_mask;
dd5ecfea 644 wiphy->vht_capa_mod_mask = &mac80211_vht_capa_mod_mask;
f0706e82 645
e9a21949
LC		 646 local->ext_capa[7] = WLAN_EXT_CAPA8_OPMODE_NOTIF;
647
648 wiphy->extended_capabilities = local->ext_capa;
649 wiphy->extended_capabilities_mask = local->ext_capa;
650 wiphy->extended_capabilities_len =
651 ARRAY_SIZE(local->ext_capa);
652
79010420 653 INIT_LIST_HEAD(&local->interfaces);
f64331d5 654 INIT_LIST_HEAD(&local->mon_list);
2f787b0b
YH		 655
656 __hw_addr_init(&local->mc_list);
657
c771c9d8 658 mutex_init(&local->iflist_mtx);
a1699b75 659 mutex_init(&local->mtx);
f0706e82 660
ad0e2b5a 661 mutex_init(&local->key_mtx);
3b8d81e0 662 spin_lock_init(&local->filter_lock);
f9e124fb 663 spin_lock_init(&local->rx_path_lock);
ce7c9111
KV		 664 spin_lock_init(&local->queue_stop_reason_lock);
665
18667600
THJ		 666 for (i = 0; i < IEEE80211_NUM_ACS; i++) {
667 INIT_LIST_HEAD(&local->active_txqs[i]);
668 spin_lock_init(&local->active_txq_lock[i]);
669 }
b4809e94 670 local->airtime_flags = AIRTIME_USE_TX | AIRTIME_USE_RX;
18667600 671
d01a1e65
MK		 672 INIT_LIST_HEAD(&local->chanctx_list);
673 mutex_init(&local->chanctx_mtx);
674
c2b13452 675 INIT_DELAYED_WORK(&local->scan_work, ieee80211_scan_work);
f0706e82 676
f2753ddb
JB		 677 INIT_WORK(&local->restart_work, ieee80211_restart_work);
678
164eb02d
SW		 679 INIT_WORK(&local->radar_detected_work,
680 ieee80211_dfs_radar_detected_work);
681
3ac64bee 682 INIT_WORK(&local->reconfig_filter, ieee80211_reconfig_filter);
0f78231b 683 local->smps_mode = IEEE80211_SMPS_OFF;
3ac64bee 684
520eb820
KV		 685 INIT_WORK(&local->dynamic_ps_enable_work,
686 ieee80211_dynamic_ps_enable_work);
687 INIT_WORK(&local->dynamic_ps_disable_work,
688 ieee80211_dynamic_ps_disable_work);
34f11cd3 689 timer_setup(&local->dynamic_ps_timer, ieee80211_dynamic_ps_timer, 0);
520eb820 690
85a9994a
LC		 691 INIT_WORK(&local->sched_scan_stopped_work,
692 ieee80211_sched_scan_stopped_work);
693
c8ff71e6
AN		 694 INIT_WORK(&local->tdls_chsw_work, ieee80211_tdls_chsw_work);
695
a729cff8
JB		 696 spin_lock_init(&local->ack_status_lock);
697 idr_init(&local->ack_status_frames);
a729cff8 698
a6a67db2 699 for (i = 0; i < IEEE80211_MAX_QUEUES; i++) {
2a577d98 700 skb_queue_head_init(&local->pending[i]);
a6a67db2
JB		 701 atomic_set(&local->agg_queue_stop[i], 0);
702 }
f0706e82
JB		 703 tasklet_init(&local->tx_pending_tasklet, ieee80211_tx_pending,
704 (unsigned long)local);
f0706e82 705
21a5d4c3
MP		 706 if (ops->wake_tx_queue)
707 tasklet_init(&local->wake_txqs_tasklet, ieee80211_wake_txqs,
708 (unsigned long)local);
709
f0706e82
JB		 710 tasklet_init(&local->tasklet,
711 ieee80211_tasklet_handler,
712 (unsigned long) local);
f0706e82
JB		 713
714 skb_queue_head_init(&local->skb_queue);
715 skb_queue_head_init(&local->skb_queue_unreliable);
c8ff71e6 716 skb_queue_head_init(&local->skb_queue_tdls_chsw);
f0706e82 717
8d5c2585 718 ieee80211_alloc_led_names(local);
fe67c913 719
2eb278e0 720 ieee80211_roc_setup(local);
21f83589 721
99ee7cae
JB		 722 local->hw.radiotap_timestamp.units_pos = -1;
723 local->hw.radiotap_timestamp.accuracy = -1;
724
005e472b 725 return &local->hw;
7bedd0cf
JB		 726 err_free:
727 wiphy_free(wiphy);
728 return NULL;
f0706e82 729}
ad28757e 730EXPORT_SYMBOL(ieee80211_alloc_hw_nm);
f0706e82 731
2475b1cc 732static int ieee80211_init_cipher_suites(struct ieee80211_local *local)
f0706e82 733{
5fdb3735 734 bool have_wep = !fips_enabled; /* FIPS does not permit the use of RC4 */
30686bf7 735 bool have_mfp = ieee80211_hw_check(&local->hw, MFP_CAPABLE);
2475b1cc
MS		 736 int n_suites = 0, r = 0, w = 0;
737 u32 *suites;
25e47c18 738 static const u32 cipher_suites[] = {
5daa8a8e 739 /* keep WEP first, it may be removed below */
25e47c18
JB		 740 WLAN_CIPHER_SUITE_WEP40,
741 WLAN_CIPHER_SUITE_WEP104,
742 WLAN_CIPHER_SUITE_TKIP,
743 WLAN_CIPHER_SUITE_CCMP,
2b2ba0db 744 WLAN_CIPHER_SUITE_CCMP_256,
00b9cfa3
JM		 745 WLAN_CIPHER_SUITE_GCMP,
746 WLAN_CIPHER_SUITE_GCMP_256,
25e47c18
JB		 747
748 /* keep last -- depends on hw flags! */
56c52da2
JM		 749 WLAN_CIPHER_SUITE_AES_CMAC,
750 WLAN_CIPHER_SUITE_BIP_CMAC_256,
8ade538b
JM		 751 WLAN_CIPHER_SUITE_BIP_GMAC_128,
752 WLAN_CIPHER_SUITE_BIP_GMAC_256,
25e47c18 753 };
8318d78a 754
30686bf7 755 if (ieee80211_hw_check(&local->hw, SW_CRYPTO_CONTROL) ||
fa7e1fbc
JB		 756 local->hw.wiphy->cipher_suites) {
757 /* If the driver advertises, or doesn't support SW crypto,
758 * we only need to remove WEP if necessary.
759 */
760 if (have_wep)
761 return 0;
762
763 /* well if it has _no_ ciphers ... fine */
764 if (!local->hw.wiphy->n_cipher_suites)
765 return 0;
766
767 /* Driver provides cipher suites, but we need to exclude WEP */
768 suites = kmemdup(local->hw.wiphy->cipher_suites,
769 sizeof(u32) * local->hw.wiphy->n_cipher_suites,
770 GFP_KERNEL);
771 if (!suites)
772 return -ENOMEM;
2475b1cc 773
fa7e1fbc
JB		 774 for (r = 0; r < local->hw.wiphy->n_cipher_suites; r++) {
775 u32 suite = local->hw.wiphy->cipher_suites[r];
776
777 if (suite == WLAN_CIPHER_SUITE_WEP40 ||
778 suite == WLAN_CIPHER_SUITE_WEP104)
779 continue;
780 suites[w++] = suite;
781 }
782 } else if (!local->hw.cipher_schemes) {
783 /* If the driver doesn't have cipher schemes, there's nothing
784 * else to do other than assign the (software supported and
785 * perhaps offloaded) cipher suites.
786 */
2475b1cc
MS		 787 local->hw.wiphy->cipher_suites = cipher_suites;
788 local->hw.wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
789
790 if (!have_mfp)
8ade538b 791 local->hw.wiphy->n_cipher_suites -= 4;
2475b1cc
MS		 792
793 if (!have_wep) {
794 local->hw.wiphy->cipher_suites += 2;
795 local->hw.wiphy->n_cipher_suites -= 2;
796 }
797
fa7e1fbc 798 /* not dynamically allocated, so just return */
2475b1cc 799 return 0;
fa7e1fbc
JB		 800 } else {
801 const struct ieee80211_cipher_scheme *cs;
2475b1cc 802
fa7e1fbc
JB		 803 cs = local->hw.cipher_schemes;
804
805 /* Driver specifies cipher schemes only (but not cipher suites
806 * including the schemes)
807 *
00b9cfa3 808 * We start counting ciphers defined by schemes, TKIP, CCMP,
2b2ba0db 809 * CCMP-256, GCMP, and GCMP-256
2475b1cc 810 */
2b2ba0db 811 n_suites = local->hw.n_cipher_schemes + 5;
2475b1cc
MS		 812
813 /* check if we have WEP40 and WEP104 */
814 if (have_wep)
815 n_suites += 2;
816
8ade538b
JM		 817 /* check if we have AES_CMAC, BIP-CMAC-256, BIP-GMAC-128,
818 * BIP-GMAC-256
819 */
2475b1cc 820 if (have_mfp)
8ade538b 821 n_suites += 4;
2475b1cc 822
6da2ec56 823 suites = kmalloc_array(n_suites, sizeof(u32), GFP_KERNEL);
2475b1cc
MS		 824 if (!suites)
825 return -ENOMEM;
826
827 suites[w++] = WLAN_CIPHER_SUITE_CCMP;
2b2ba0db 828 suites[w++] = WLAN_CIPHER_SUITE_CCMP_256;
2475b1cc 829 suites[w++] = WLAN_CIPHER_SUITE_TKIP;
00b9cfa3
JM		 830 suites[w++] = WLAN_CIPHER_SUITE_GCMP;
831 suites[w++] = WLAN_CIPHER_SUITE_GCMP_256;
2475b1cc
MS		 832
833 if (have_wep) {
834 suites[w++] = WLAN_CIPHER_SUITE_WEP40;
835 suites[w++] = WLAN_CIPHER_SUITE_WEP104;
836 }
837
56c52da2 838 if (have_mfp) {
2475b1cc 839 suites[w++] = WLAN_CIPHER_SUITE_AES_CMAC;
56c52da2 840 suites[w++] = WLAN_CIPHER_SUITE_BIP_CMAC_256;
8ade538b
JM		 841 suites[w++] = WLAN_CIPHER_SUITE_BIP_GMAC_128;
842 suites[w++] = WLAN_CIPHER_SUITE_BIP_GMAC_256;
56c52da2 843 }
2475b1cc 844
e3a55b53 845 for (r = 0; r < local->hw.n_cipher_schemes; r++) {
2475b1cc 846 suites[w++] = cs[r].cipher;
94c78cb4
JB		 847 if (WARN_ON(cs[r].pn_len > IEEE80211_MAX_PN_LEN)) {
848 kfree(suites);
e3a55b53 849 return -EINVAL;
94c78cb4 850 }
e3a55b53 851 }
2475b1cc
MS		 852 }
853
854 local->hw.wiphy->cipher_suites = suites;
855 local->hw.wiphy->n_cipher_suites = w;
856 local->wiphy_ciphers_allocated = true;
857
858 return 0;
859}
860
861int ieee80211_register_hw(struct ieee80211_hw *hw)
862{
863 struct ieee80211_local *local = hw_to_local(hw);
864 int result, i;
57fbcce3 865 enum nl80211_band band;
2475b1cc 866 int channels, max_bitrates;
41cbb0f5 867 bool supp_ht, supp_vht, supp_he;
2475b1cc
MS		 868 netdev_features_t feature_whitelist;
869 struct cfg80211_chan_def dflt_chandef = {};
870
30686bf7 871 if (ieee80211_hw_check(hw, QUEUE_CONTROL) &&
3a25a8c8
JB		 872 (local->hw.offchannel_tx_hw_queue == IEEE80211_INVAL_HW_QUEUE ||
873 local->hw.offchannel_tx_hw_queue >= local->hw.queues))
874 return -EINVAL;
875
a7a6bdd0
AN		 876 if ((hw->wiphy->features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH) &&
877 (!local->ops->tdls_channel_switch ||
8a4d32f3
AN		 878 !local->ops->tdls_cancel_channel_switch ||
879 !local->ops->tdls_recv_channel_switch))
a7a6bdd0
AN		 880 return -EOPNOTSUPP;
881
f3fe4e93
SS		 882 if (WARN_ON(ieee80211_hw_check(hw, SUPPORTS_TX_FRAG) &&
883 !local->ops->set_frag_threshold))
884 return -EINVAL;
885
708d50ed
AB		 886 if (WARN_ON(local->hw.wiphy->interface_modes &
887 BIT(NL80211_IFTYPE_NAN) &&
888 (!local->ops->start_nan || !local->ops->stop_nan)))
889 return -EINVAL;
890
38bb3e9d 891#ifdef CONFIG_PM
964dc9e2 892 if (hw->wiphy->wowlan && (!local->ops->suspend || !local->ops->resume))
eecc4800 893 return -EINVAL;
dfb89c56 894#endif
eecc4800 895
fe57d9f5
JB		 896 if (!local->use_chanctx) {
897 for (i = 0; i < local->hw.wiphy->n_iface_combinations; i++) {
898 const struct ieee80211_iface_combination *comb;
899
900 comb = &local->hw.wiphy->iface_combinations[i];
901
902 if (comb->num_different_channels > 1)
903 return -EINVAL;
904 }
746a3365 905 } else {
fe57d9f5
JB		 906 /*
907 * WDS is currently prohibited when channel contexts are used
908 * because there's no clear definition of which channel WDS
909 * type interfaces use
910 */
911 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_WDS))
912 return -EINVAL;
164eb02d 913
486cf4c0 914 /* DFS is not supported with multi-channel combinations yet */
164eb02d
SW		 915 for (i = 0; i < local->hw.wiphy->n_iface_combinations; i++) {
916 const struct ieee80211_iface_combination *comb;
917
918 comb = &local->hw.wiphy->iface_combinations[i];
919
486cf4c0
MK		 920 if (comb->radar_detect_widths &&
921 comb->num_different_channels > 1)
164eb02d
SW		 922 return -EINVAL;
923 }
fe57d9f5
JB		 924 }
925
72d78728
AN		 926 /* Only HW csum features are currently compatible with mac80211 */
927 feature_whitelist = NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
80616c0d 928 NETIF_F_HW_CSUM | NETIF_F_SG | NETIF_F_HIGHDMA |
e0352123 929 NETIF_F_GSO_SOFTWARE | NETIF_F_RXCSUM;
72d78728
AN		 930 if (WARN_ON(hw->netdev_features & ~feature_whitelist))
931 return -EINVAL;
932
78be49ec
HS		 933 if (hw->max_report_rates == 0)
934 hw->max_report_rates = hw->max_rates;
935
04ecd257
JB		 936 local->rx_chains = 1;
937
8318d78a
JB		 938 /*
939 * generic code guarantees at least one band,
940 * set this very early because much code assumes
941 * that hw.conf.channel is assigned
942 */
2a519311 943 channels = 0;
de95a54b 944 max_bitrates = 0;
5ef2d41a 945 supp_ht = false;
ba0afa2f 946 supp_vht = false;
41cbb0f5 947 supp_he = false;
57fbcce3 948 for (band = 0; band < NUM_NL80211_BANDS; band++) {
8318d78a
JB		 949 struct ieee80211_supported_band *sband;
950
951 sband = local->hw.wiphy->bands[band];
de95a54b
JB		 952 if (!sband)
953 continue;
fffa4b1c
KB		 954
955 if (!dflt_chandef.chan) {
956 cfg80211_chandef_create(&dflt_chandef,
957 &sband->channels[0],
958 NL80211_CHAN_NO_HT);
8318d78a 959 /* init channel we're on */
fffa4b1c
KB		 960 if (!local->use_chanctx && !local->_oper_chandef.chan) {
961 local->hw.conf.chandef = dflt_chandef;
962 local->_oper_chandef = dflt_chandef;
963 }
964 local->monitor_chandef = dflt_chandef;
8318d78a 965 }
fffa4b1c 966
de95a54b
JB		 967 channels += sband->n_channels;
968
969 if (max_bitrates < sband->n_bitrates)
970 max_bitrates = sband->n_bitrates;
5ef2d41a 971 supp_ht = supp_ht || sband->ht_cap.ht_supported;
ba0afa2f 972 supp_vht = supp_vht || sband->vht_cap.vht_supported;
04ecd257 973
41cbb0f5
LC		 974 if (!supp_he)
975 supp_he = !!ieee80211_get_he_sta_cap(sband);
976
43071d8f
FF		 977 if (!sband->ht_cap.ht_supported)
978 continue;
04ecd257
JB		 979
980 /* TODO: consider VHT for RX chains, hopefully it's the same */
43071d8f
FF		 981 local->rx_chains =
982 max(ieee80211_mcs_to_chains(&sband->ht_cap.mcs),
983 local->rx_chains);
984
985 /* no need to mask, SM_PS_DISABLED has all bits set */
986 sband->ht_cap.cap |= WLAN_HT_CAP_SM_PS_DISABLED <<
987 IEEE80211_HT_CAP_SM_PS_SHIFT;
8318d78a 988 }
f0706e82 989
db3bdcb9
MP		 990 /* if low-level driver supports AP, we also support VLAN.
991 * drivers advertising SW_CRYPTO_CONTROL should enable AP_VLAN
992 * based on their support to transmit SW encrypted packets.
993 */
994 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_AP) &&
995 !ieee80211_hw_check(&local->hw, SW_CRYPTO_CONTROL)) {
7527a782
JB		 996 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP_VLAN);
997 hw->wiphy->software_iftypes |= BIT(NL80211_IFTYPE_AP_VLAN);
998 }
f59ac048
LR		 999
1000 /* mac80211 always supports monitor */
7527a782
JB		 1001 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR);
1002 hw->wiphy->software_iftypes |= BIT(NL80211_IFTYPE_MONITOR);
1003
55de908a 1004 /* mac80211 doesn't support more than one IBSS interface right now */
8e621fc9
JB		 1005 for (i = 0; i < hw->wiphy->n_iface_combinations; i++) {
1006 const struct ieee80211_iface_combination *c;
1007 int j;
1008
1009 c = &hw->wiphy->iface_combinations[i];
1010
8e621fc9
JB		 1011 for (j = 0; j < c->n_limits; j++)
1012 if ((c->limits[j].types & BIT(NL80211_IFTYPE_ADHOC)) &&
1013 c->limits[j].max > 1)
1014 return -EINVAL;
1015 }
1016
5b0ec94f
JB		 1017 local->int_scan_req = kzalloc(sizeof(*local->int_scan_req) +
1018 sizeof(void *) * channels, GFP_KERNEL);
1019 if (!local->int_scan_req)
1020 return -ENOMEM;
1021
57fbcce3 1022 for (band = 0; band < NUM_NL80211_BANDS; band++) {
5b0ec94f
JB		 1023 if (!local->hw.wiphy->bands[band])
1024 continue;
1025 local->int_scan_req->rates[band] = (u32) -1;
1026 }
1027
5eb5a52d
JB		 1028#ifndef CONFIG_MAC80211_MESH
1029 /* mesh depends on Kconfig, but drivers should set it if they want */
1030 local->hw.wiphy->interface_modes &= ~BIT(NL80211_IFTYPE_MESH_POINT);
1031#endif
1032
1570ca59
JC		 1033 /* if the underlying driver supports mesh, mac80211 will (at least)
1034 * provide routing of mesh authentication frames to userspace */
1035 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_MESH_POINT))
1036 local->hw.wiphy->flags |= WIPHY_FLAG_MESH_AUTH;
1037
a621fa4d
JB		 1038 /* mac80211 supports control port protocol changing */
1039 local->hw.wiphy->flags |= WIPHY_FLAG_CONTROL_PORT_PROTOCOL;
1040
30686bf7 1041 if (ieee80211_hw_check(&local->hw, SIGNAL_DBM)) {
77965c97 1042 local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
30686bf7 1043 } else if (ieee80211_hw_check(&local->hw, SIGNAL_UNSPEC)) {
77965c97 1044 local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC;
52512072 1045 if (hw->max_signal <= 0) {
1046 result = -EINVAL;
1047 goto fail_wiphy_register;
1048 }
1049 }
77965c97 1050
622fce81
AW		 1051 /* Enable Extended Key IDs when driver allowed it, or when it
1052 * supports neither HW crypto nor A-MPDUs
1053 */
1054 if ((!local->ops->set_key &&
1055 !ieee80211_hw_check(hw, AMPDU_AGGREGATION)) ||
96fc6efb
AW		 1056 ieee80211_hw_check(&local->hw, EXT_KEY_ID_NATIVE))
1057 wiphy_ext_feature_set(local->hw.wiphy,
1058 NL80211_EXT_FEATURE_EXT_KEY_ID);
1059
387bc002
AW		 1060 /* Mac80211 and therefore all cards only using SW crypto are able to
1061 * handle PTK rekeys correctly
1062 */
1063 if (!local->ops->set_key)
1064 wiphy_ext_feature_set(local->hw.wiphy,
1065 NL80211_EXT_FEATURE_CAN_REPLACE_PTK0);
1066
de95a54b
JB		 1067 /*
1068 * Calculate scan IE length -- we need this to alloc
1069 * memory and to subtract from the driver limit. It
dc9f48ce 1070 * includes the DS Params, (extended) supported rates, and HT
de95a54b
JB		 1071 * information -- SSID is the driver's responsibility.
1072 */
dc9f48ce
JM		 1073 local->scan_ies_len = 4 + max_bitrates /* (ext) supp rates */ +
1074 3 /* DS Params */;
5ef2d41a
JB		 1075 if (supp_ht)
1076 local->scan_ies_len += 2 + sizeof(struct ieee80211_ht_cap);
de95a54b 1077
d0e6c21a 1078 if (supp_vht)
ba0afa2f 1079 local->scan_ies_len +=
d4950281 1080 2 + sizeof(struct ieee80211_vht_cap);
ba0afa2f 1081
41cbb0f5
LC		 1082 /* HE cap element is variable in size - set len to allow max size */
1083 /*
1084 * TODO: 1 is added at the end of the calculation to accommodate for
1085 * the temporary placing of the HE capabilities IE under EXT.
1086 * Remove it once it is placed in the final place.
1087 */
1088 if (supp_he)
1089 local->scan_ies_len +=
1090 2 + sizeof(struct ieee80211_he_cap_elem) +
1091 sizeof(struct ieee80211_he_mcs_nss_supp) +
1092 IEEE80211_HE_PPE_THRES_MAX_LEN + 1;
1093
de95a54b
JB		 1094 if (!local->ops->hw_scan) {
1095 /* For hw_scan, driver needs to set these up. */
1096 local->hw.wiphy->max_scan_ssids = 4;
1097 local->hw.wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
1098 }
1099
1100 /*
1101 * If the driver supports any scan IEs, then assume the
1102 * limit includes the IEs mac80211 will add, otherwise
1103 * leave it at zero and let the driver sort it out; we
1104 * still pass our IEs to the driver but userspace will
1105 * not be allowed to in that case.
1106 */
1107 if (local->hw.wiphy->max_scan_ie_len)
1108 local->hw.wiphy->max_scan_ie_len -= local->scan_ies_len;
1109
2475b1cc
MS		 1110 WARN_ON(!ieee80211_cs_list_valid(local->hw.cipher_schemes,
1111 local->hw.n_cipher_schemes));
1112
1113 result = ieee80211_init_cipher_suites(local);
1114 if (result < 0)
1115 goto fail_wiphy_register;
25e47c18 1116
21f83589
JB		 1117 if (!local->ops->remain_on_channel)
1118 local->hw.wiphy->max_remain_on_channel_duration = 5000;
a293911d 1119
dfe018bf
AN		 1120 /* mac80211 based drivers don't support internal TDLS setup */
1121 if (local->hw.wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS)
1122 local->hw.wiphy->flags |= WIPHY_FLAG_TDLS_EXTERNAL_SETUP;
1123
e9a21949 1124 /* mac80211 supports eCSA, if the driver supports STA CSA at all */
30686bf7 1125 if (ieee80211_hw_check(&local->hw, CHANCTX_STA_CSA))
e9a21949
LC		 1126 local->ext_capa[0] |= WLAN_EXT_CAPA1_EXT_CHANNEL_SWITCHING;
1127
caf56338
SS		 1128 /* mac80211 supports multi BSSID, if the driver supports it */
1129 if (ieee80211_hw_check(&local->hw, SUPPORTS_MULTI_BSSID)) {
1130 local->hw.wiphy->support_mbssid = true;
1131 if (ieee80211_hw_check(&local->hw,
1132 SUPPORTS_ONLY_HE_MULTI_BSSID))
1133 local->hw.wiphy->support_only_he_mbssid = true;
1134 else
1135 local->ext_capa[2] |=
1136 WLAN_EXT_CAPA3_MULTI_BSSID_SUPPORT;
1137 }
1138
0d06d9ba
AO		 1139 local->hw.wiphy->max_num_csa_counters = IEEE80211_MAX_CSA_COUNTERS_NUM;
1140
f0706e82
JB		 1141 result = wiphy_register(local->hw.wiphy);
1142 if (result < 0)
2a519311 1143 goto fail_wiphy_register;
f0706e82 1144
e2530083
JB		 1145 /*
1146 * We use the number of queues for feature tests (QoS, HT) internally
1147 * so restrict them appropriately.
1148 */
e2530083
JB		 1149 if (hw->queues > IEEE80211_MAX_QUEUES)
1150 hw->queues = IEEE80211_MAX_QUEUES;
e2530083 1151
42935eca 1152 local->workqueue =
d8537548 1153 alloc_ordered_workqueue("%s", 0, wiphy_name(local->hw.wiphy));
42935eca 1154 if (!local->workqueue) {
f0706e82
JB		 1155 result = -ENOMEM;
1156 goto fail_workqueue;
1157 }
1158
b306f453
JB		 1159 /*
1160 * The hardware needs headroom for sending the frame,
1161 * and we need some headroom for passing the frame to monitor
1162 * interfaces, but never both at the same time.
1163 */
33ccad35 1164 local->tx_headroom = max_t(unsigned int , local->hw.extra_tx_headroom,
a2fe8166 1165 IEEE80211_TX_STATUS_HEADROOM);
b306f453 1166
e9f207f0
JB		 1167 debugfs_hw_add(local);
1168
b446918b
HS		 1169 /*
1170 * if the driver doesn't specify a max listen interval we
1171 * use 5 which should be a safe default
1172 */
ea95bba4 1173 if (local->hw.max_listen_interval == 0)
b446918b 1174 local->hw.max_listen_interval = 5;
ea95bba4
TW		 1175
1176 local->hw.conf.listen_interval = local->hw.max_listen_interval;
1177
ff616381 1178 local->dynamic_ps_forced_timeout = -1;
195e294d 1179
167e33f4
AB		 1180 if (!local->hw.max_nan_de_entries)
1181 local->hw.max_nan_de_entries = IEEE80211_MAX_NAN_INSTANCE_ID;
1182
b4809e94
THJ		 1183 if (!local->hw.weight_multiplier)
1184 local->hw.weight_multiplier = 1;
1185
d4c4a9a1 1186 result = ieee80211_wep_init(local);
3473187d 1187 if (result < 0)
0fb9a9ec
JP		 1188 wiphy_debug(local->hw.wiphy, "Failed to initialize wep: %d\n",
1189 result);
d4c4a9a1 1190
24d47300
KB		 1191 local->hw.conf.flags = IEEE80211_CONF_IDLE;
1192
b57e6b56
MSS		 1193 ieee80211_led_init(local);
1194
dc8b274f
THJ		 1195 result = ieee80211_txq_setup_flows(local);
1196 if (result)
1197 goto fail_flows;
1198
f0706e82 1199 rtnl_lock();
f0706e82 1200
830f9038
JB		 1201 result = ieee80211_init_rate_ctrl_alg(local,
1202 hw->rate_control_algorithm);
f0706e82 1203 if (result < 0) {
0fb9a9ec
JP		 1204 wiphy_debug(local->hw.wiphy,
1205 "Failed to initialize rate control algorithm\n");
f0706e82
JB		 1206 goto fail_rate;
1207 }
1208
09b4a4fa
JB		 1209 if (local->rate_ctrl) {
1210 clear_bit(IEEE80211_HW_SUPPORTS_VHT_EXT_NSS_BW, hw->flags);
1211 if (local->rate_ctrl->ops->capa & RATE_CTRL_CAPA_VHT_EXT_NSS_BW)
1212 ieee80211_hw_set(hw, SUPPORTS_VHT_EXT_NSS_BW);
1213 }
1214
1215 /*
1216 * If the VHT capabilities don't have IEEE80211_VHT_EXT_NSS_BW_CAPABLE,
1217 * or have it when we don't, copy the sband structure and set/clear it.
1218 * This is necessary because rate scaling algorithms could be switched
1219 * and have different support values.
1220 * Print a message so that in the common case the reallocation can be
1221 * avoided.
1222 */
1223 BUILD_BUG_ON(NUM_NL80211_BANDS > 8 * sizeof(local->sband_allocated));
1224 for (band = 0; band < NUM_NL80211_BANDS; band++) {
1225 struct ieee80211_supported_band *sband;
1226 bool local_cap, ie_cap;
1227
1228 local_cap = ieee80211_hw_check(hw, SUPPORTS_VHT_EXT_NSS_BW);
1229
1230 sband = local->hw.wiphy->bands[band];
1231 if (!sband || !sband->vht_cap.vht_supported)
1232 continue;
1233
1234 ie_cap = !!(sband->vht_cap.vht_mcs.tx_highest &
1235 cpu_to_le16(IEEE80211_VHT_EXT_NSS_BW_CAPABLE));
1236
1237 if (local_cap == ie_cap)
1238 continue;
1239
1240 sband = kmemdup(sband, sizeof(*sband), GFP_KERNEL);
48f3b9e9
WY		 1241 if (!sband) {
1242 result = -ENOMEM;
09b4a4fa 1243 goto fail_rate;
48f3b9e9 1244 }
09b4a4fa
JB		 1245
1246 wiphy_dbg(hw->wiphy, "copying sband (band %d) due to VHT EXT NSS BW flag\n",
1247 band);
1248
1249 sband->vht_cap.vht_mcs.tx_highest ^=
1250 cpu_to_le16(IEEE80211_VHT_EXT_NSS_BW_CAPABLE);
1251
1252 local->hw.wiphy->bands[band] = sband;
1253 local->sband_allocated |= BIT(band);
1254 }
1255
8dffff21 1256 /* add one default STA interface if supported */
e27513fb 1257 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_STATION) &&
30686bf7 1258 !ieee80211_hw_check(hw, NO_AUTO_VIF)) {
dd665d23
JB		 1259 struct vif_params params = {0};
1260
6bab2e19 1261 result = ieee80211_if_add(local, "wlan%d", NET_NAME_ENUM, NULL,
dd665d23 1262 NL80211_IFTYPE_STATION, &params);
8dffff21 1263 if (result)
0fb9a9ec
JP		 1264 wiphy_warn(local->hw.wiphy,
1265 "Failed to add default virtual iface\n");
8dffff21 1266 }
f0706e82 1267
f0706e82
JB		 1268 rtnl_unlock();
1269
26b36cfe 1270#ifdef CONFIG_INET
2b2c009e
JO		 1271 local->ifa_notifier.notifier_call = ieee80211_ifa_changed;
1272 result = register_inetaddr_notifier(&local->ifa_notifier);
1273 if (result)
1274 goto fail_ifa;
26b36cfe 1275#endif
2b2c009e 1276
a65240c1
JB		 1277#if IS_ENABLED(CONFIG_IPV6)
1278 local->ifa6_notifier.notifier_call = ieee80211_ifa6_changed;
1279 result = register_inet6addr_notifier(&local->ifa6_notifier);
1280 if (result)
1281 goto fail_ifa6;
1282#endif
1283
f0706e82
JB		 1284 return 0;
1285
a65240c1
JB		 1286#if IS_ENABLED(CONFIG_IPV6)
1287 fail_ifa6:
93c08c32 1288#ifdef CONFIG_INET
a65240c1
JB		 1289 unregister_inetaddr_notifier(&local->ifa_notifier);
1290#endif
1291#endif
1292#if defined(CONFIG_INET) || defined(CONFIG_IPV6)
2b2c009e 1293 fail_ifa:
93c08c32 1294#endif
54330bf6
JB		 1295 rtnl_lock();
1296 rate_control_deinitialize(local);
10f644a4 1297 ieee80211_remove_interfaces(local);
10f644a4 1298 fail_rate:
f0706e82 1299 rtnl_unlock();
54330bf6 1300 ieee80211_led_exit(local);
dc8b274f 1301 fail_flows:
42935eca 1302 destroy_workqueue(local->workqueue);
10f644a4 1303 fail_workqueue:
f0706e82 1304 wiphy_unregister(local->hw.wiphy);
10f644a4 1305 fail_wiphy_register:
3ffc2a90
JB		 1306 if (local->wiphy_ciphers_allocated)
1307 kfree(local->hw.wiphy->cipher_suites);
11ba964d 1308 kfree(local->int_scan_req);
f0706e82
JB		 1309 return result;
1310}
1311EXPORT_SYMBOL(ieee80211_register_hw);
1312
f0706e82
JB		 1313void ieee80211_unregister_hw(struct ieee80211_hw *hw)
1314{
1315 struct ieee80211_local *local = hw_to_local(hw);
f0706e82
JB		 1316
1317 tasklet_kill(&local->tx_pending_tasklet);
1318 tasklet_kill(&local->tasklet);
1319
26b36cfe 1320#ifdef CONFIG_INET
2b2c009e 1321 unregister_inetaddr_notifier(&local->ifa_notifier);
26b36cfe 1322#endif
a65240c1
JB		 1323#if IS_ENABLED(CONFIG_IPV6)
1324 unregister_inet6addr_notifier(&local->ifa6_notifier);
1325#endif
10f644a4 1326
f0706e82
JB		 1327 rtnl_lock();
1328
79010420
JB		 1329 /*
1330 * At this point, interface list manipulations are fine
1331 * because the driver cannot be handing us frames any
1332 * more and the tasklet is killed.
1333 */
75636525 1334 ieee80211_remove_interfaces(local);
5b2812e9 1335
f0706e82
JB		 1336 rtnl_unlock();
1337
aaa016cc 1338 cancel_delayed_work_sync(&local->roc_work);
258086a4 1339 cancel_work_sync(&local->restart_work);
3ac64bee 1340 cancel_work_sync(&local->reconfig_filter);
c8ff71e6 1341 cancel_work_sync(&local->tdls_chsw_work);
18db594a 1342 flush_work(&local->sched_scan_stopped_work);
4a199068 1343 flush_work(&local->radar_detected_work);
3ac64bee 1344
f0706e82 1345 ieee80211_clear_tx_pending(local);
f0706e82
JB		 1346 rate_control_deinitialize(local);
1347
f64f9e71
JP		 1348 if (skb_queue_len(&local->skb_queue) ||
1349 skb_queue_len(&local->skb_queue_unreliable))
0fb9a9ec 1350 wiphy_warn(local->hw.wiphy, "skb_queue not empty\n");
f0706e82
JB		 1351 skb_queue_purge(&local->skb_queue);
1352 skb_queue_purge(&local->skb_queue_unreliable);
c8ff71e6 1353 skb_queue_purge(&local->skb_queue_tdls_chsw);
f0706e82 1354
42935eca 1355 destroy_workqueue(local->workqueue);
f0706e82 1356 wiphy_unregister(local->hw.wiphy);
f0706e82 1357 ieee80211_led_exit(local);
5ba63533 1358 kfree(local->int_scan_req);
f0706e82
JB		 1359}
1360EXPORT_SYMBOL(ieee80211_unregister_hw);
1361
a729cff8
JB		 1362static int ieee80211_free_ack_frame(int id, void *p, void *data)
1363{
1364 WARN_ONCE(1, "Have pending ack frames!\n");
1365 kfree_skb(p);
1366 return 0;
1367}
1368
f0706e82
JB		 1369void ieee80211_free_hw(struct ieee80211_hw *hw)
1370{
1371 struct ieee80211_local *local = hw_to_local(hw);
09b4a4fa 1372 enum nl80211_band band;
f0706e82 1373
c771c9d8 1374 mutex_destroy(&local->iflist_mtx);
a1699b75 1375 mutex_destroy(&local->mtx);
c771c9d8 1376
3ffc2a90
JB		 1377 if (local->wiphy_ciphers_allocated)
1378 kfree(local->hw.wiphy->cipher_suites);
1379
a729cff8
JB		 1380 idr_for_each(&local->ack_status_frames,
1381 ieee80211_free_ack_frame, NULL);
1382 idr_destroy(&local->ack_status_frames);
1383
54330bf6
JB		 1384 sta_info_stop(local);
1385
8d5c2585
JB		 1386 ieee80211_free_led_names(local);
1387
09b4a4fa
JB		 1388 for (band = 0; band < NUM_NL80211_BANDS; band++) {
1389 if (!(local->sband_allocated & BIT(band)))
1390 continue;
1391 kfree(local->hw.wiphy->bands[band]);
1392 }
1393
f0706e82
JB		 1394 wiphy_free(local->hw.wiphy);
1395}
1396EXPORT_SYMBOL(ieee80211_free_hw);
1397
f0706e82
JB		 1398static int __init ieee80211_init(void)
1399{
1400 struct sk_buff *skb;
1401 int ret;
1402
e039fa4a
JB		 1403 BUILD_BUG_ON(sizeof(struct ieee80211_tx_info) > sizeof(skb->cb));
1404 BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, driver_data) +
c6a1fa12 1405 IEEE80211_TX_INFO_DRIVER_DATA_SIZE > sizeof(skb->cb));
f0706e82 1406
cccf129f
FF		 1407 ret = rc80211_minstrel_init();
1408 if (ret)
1409 return ret;
1410
47846c9b
JB		 1411 ret = ieee80211_iface_init();
1412 if (ret)
1413 goto err_netdev;
e9f207f0 1414
f0706e82 1415 return 0;
47846c9b 1416 err_netdev:
47846c9b
JB		 1417 rc80211_minstrel_exit();
1418
1419 return ret;
f0706e82
JB		 1420}
1421
f0706e82
JB		 1422static void __exit ieee80211_exit(void)
1423{
cccf129f 1424 rc80211_minstrel_exit();
ac71c691 1425
bf7cd94d 1426 ieee80211s_stop();
902acc78 1427
47846c9b 1428 ieee80211_iface_exit();
d07c7cf4
JB		 1429
1430 rcu_barrier();
f0706e82
JB		 1431}
1432
1433
ca9938fe 1434subsys_initcall(ieee80211_init);
f0706e82
JB		 1435module_exit(ieee80211_exit);
1436
1437MODULE_DESCRIPTION("IEEE 802.11 subsystem");
1438MODULE_LICENSE("GPL");
Linux 6.x block layer and io_uring tree(s)