projects / linux-2.6-block.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
mac80111: Add BIP-CMAC-256 cipher
[linux-2.6-block.git] / net / mac80211 / main.c
CommitLineData
f0706e82
JB		 1/*
2 * Copyright 2002-2005, Instant802 Networks, Inc.
3 * Copyright 2005-2006, Devicescape Software, Inc.
4 * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
d98ad83e 5 * Copyright 2013-2014 Intel Mobile Communications GmbH
f0706e82
JB		 6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
10 */
11
12#include <net/mac80211.h>
f0706e82
JB		 13#include <linux/module.h>
14#include <linux/init.h>
15#include <linux/netdevice.h>
16#include <linux/types.h>
17#include <linux/slab.h>
18#include <linux/skbuff.h>
19#include <linux/etherdevice.h>
20#include <linux/if_arp.h>
f0706e82 21#include <linux/rtnetlink.h>
f0706e82 22#include <linux/bitmap.h>
e8db0be1 23#include <linux/pm_qos.h>
68542962 24#include <linux/inetdevice.h>
881d966b 25#include <net/net_namespace.h>
f0706e82 26#include <net/cfg80211.h>
a65240c1 27#include <net/addrconf.h>
f0706e82 28
f0706e82 29#include "ieee80211_i.h"
24487981 30#include "driver-ops.h"
2c8dccc7 31#include "rate.h"
f7a92144 32#include "mesh.h"
f0706e82 33#include "wep.h"
2c8dccc7 34#include "led.h"
e0eb6859 35#include "cfg.h"
e9f207f0 36#include "debugfs.h"
f0706e82 37
0d143fe1 38void ieee80211_configure_filter(struct ieee80211_local *local)
4150c572 39{
3ac64bee 40 u64 mc;
4150c572
JB		 41 unsigned int changed_flags;
42 unsigned int new_flags = 0;
43
53918994 44 if (atomic_read(&local->iff_promiscs))
4150c572
JB		 45 new_flags |= FIF_PROMISC_IN_BSS;
46
53918994 47 if (atomic_read(&local->iff_allmultis))
4150c572
JB		 48 new_flags |= FIF_ALLMULTI;
49
8a690674
BG		 50 if (local->monitors || test_bit(SCAN_SW_SCANNING, &local->scanning) ||
51 test_bit(SCAN_ONCHANNEL_SCANNING, &local->scanning))
8cc9a739
MW		 52 new_flags |= FIF_BCN_PRBRESP_PROMISC;
53
7be5086d
JB		 54 if (local->fif_probe_req || local->probe_req_reg)
55 new_flags |= FIF_PROBE_REQ;
56
8cc9a739
MW		 57 if (local->fif_fcsfail)
58 new_flags |= FIF_FCSFAIL;
59
60 if (local->fif_plcpfail)
61 new_flags |= FIF_PLCPFAIL;
62
63 if (local->fif_control)
64 new_flags |= FIF_CONTROL;
65
66 if (local->fif_other_bss)
67 new_flags |= FIF_OTHER_BSS;
4150c572 68
e3b90ca2
IP		 69 if (local->fif_pspoll)
70 new_flags |= FIF_PSPOLL;
71
3ac64bee 72 spin_lock_bh(&local->filter_lock);
4150c572
JB		 73 changed_flags = local->filter_flags ^ new_flags;
74
22bedad3 75 mc = drv_prepare_multicast(local, &local->mc_list);
3ac64bee
JB		 76 spin_unlock_bh(&local->filter_lock);
77
4150c572
JB		 78 /* be a bit nasty */
79 new_flags |= (1<<31);
80
3ac64bee 81 drv_configure_filter(local, changed_flags, &new_flags, mc);
4150c572
JB		 82
83 WARN_ON(new_flags & (1<<31));
84
85 local->filter_flags = new_flags & ~(1<<31);
86}
87
3ac64bee
JB		 88static void ieee80211_reconfig_filter(struct work_struct *work)
89{
90 struct ieee80211_local *local =
91 container_of(work, struct ieee80211_local, reconfig_filter);
92
93 ieee80211_configure_filter(local);
94}
95
55de908a 96static u32 ieee80211_hw_conf_chan(struct ieee80211_local *local)
b2c258fb 97{
1ea6f9c0 98 struct ieee80211_sub_if_data *sdata;
675a0b04 99 struct cfg80211_chan_def chandef = {};
55de908a 100 u32 changed = 0;
e8975581 101 int power;
ffd2778b 102 u32 offchannel_flag;
f0706e82 103
ffd2778b 104 offchannel_flag = local->hw.conf.flags & IEEE80211_CONF_OFFCHANNEL;
675a0b04 105
7ca15a0a
SW		 106 if (local->scan_chandef.chan) {
107 chandef = local->scan_chandef;
b23b025f 108 } else if (local->tmp_channel) {
675a0b04
KB		 109 chandef.chan = local->tmp_channel;
110 chandef.width = NL80211_CHAN_WIDTH_20_NOHT;
111 chandef.center_freq1 = chandef.chan->center_freq;
112 } else
113 chandef = local->_oper_chandef;
114
115 WARN(!cfg80211_chandef_valid(&chandef),
116 "control:%d MHz width:%d center: %d/%d MHz",
117 chandef.chan->center_freq, chandef.width,
118 chandef.center_freq1, chandef.center_freq2);
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;
1ea6f9c0
JB		 154 power = min(power, sdata->vif.bss_conf.txpower);
155 }
156 rcu_read_unlock();
a8302de9 157
e8975581
JB		 158 if (local->hw.conf.power_level != power) {
159 changed |= IEEE80211_CONF_CHANGE_POWER;
160 local->hw.conf.power_level = power;
161 }
b2c258fb 162
55de908a
JB		 163 return changed;
164}
165
166int ieee80211_hw_config(struct ieee80211_local *local, u32 changed)
167{
168 int ret = 0;
169
170 might_sleep();
171
172 if (!local->use_chanctx)
173 changed |= ieee80211_hw_conf_chan(local);
174 else
175 changed &= ~(IEEE80211_CONF_CHANGE_CHANNEL |
176 IEEE80211_CONF_CHANGE_POWER);
177
e8975581 178 if (changed && local->open_count) {
24487981 179 ret = drv_config(local, changed);
d73782fd 180 /*
447107fb 181 * Goal:
d73782fd
JB		 182 * HW reconfiguration should never fail, the driver has told
183 * us what it can support so it should live up to that promise.
447107fb
RC		 184 *
185 * Current status:
186 * rfkill is not integrated with mac80211 and a
187 * configuration command can thus fail if hardware rfkill
188 * is enabled
189 *
190 * FIXME: integrate rfkill with mac80211 and then add this
191 * WARN_ON() back
192 *
d73782fd 193 */
447107fb 194 /* WARN_ON(ret); */
d73782fd 195 }
f0706e82 196
b2c258fb
JB		 197 return ret;
198}
f0706e82 199
471b3efd
JB		 200void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
201 u32 changed)
d9430a32 202{
471b3efd
JB		 203 struct ieee80211_local *local = sdata->local;
204
990baec0 205 if (!changed || sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
471b3efd
JB		 206 return;
207
12375ef9 208 drv_bss_info_changed(local, sdata, &sdata->vif.bss_conf, changed);
d9430a32
DD		 209}
210
f698d856 211u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata)
d9430a32 212{
bda3933a
JB		 213 sdata->vif.bss_conf.use_cts_prot = false;
214 sdata->vif.bss_conf.use_short_preamble = false;
215 sdata->vif.bss_conf.use_short_slot = false;
7a5158ef
JB		 216 return BSS_CHANGED_ERP_CTS_PROT |
217 BSS_CHANGED_ERP_PREAMBLE |
218 BSS_CHANGED_ERP_SLOT;
d9430a32
DD		 219}
220
f0706e82
JB		 221static void ieee80211_tasklet_handler(unsigned long data)
222{
223 struct ieee80211_local *local = (struct ieee80211_local *) data;
224 struct sk_buff *skb;
f0706e82
JB		 225
226 while ((skb = skb_dequeue(&local->skb_queue)) ||
227 (skb = skb_dequeue(&local->skb_queue_unreliable))) {
228 switch (skb->pkt_type) {
229 case IEEE80211_RX_MSG:
51fb61e7 230 /* Clear skb->pkt_type in order to not confuse kernel
f0706e82
JB		 231 * netstack. */
232 skb->pkt_type = 0;
005e472b 233 ieee80211_rx(&local->hw, skb);
f0706e82
JB		 234 break;
235 case IEEE80211_TX_STATUS_MSG:
f0706e82 236 skb->pkt_type = 0;
005e472b 237 ieee80211_tx_status(&local->hw, skb);
f0706e82 238 break;
f4ea83dd 239 default:
5e3f3089
LF		 240 WARN(1, "mac80211: Packet is of unknown type %d\n",
241 skb->pkt_type);
f0706e82
JB		 242 dev_kfree_skb(skb);
243 break;
244 }
245 }
246}
247
f2753ddb
JB		 248static void ieee80211_restart_work(struct work_struct *work)
249{
250 struct ieee80211_local *local =
251 container_of(work, struct ieee80211_local, restart_work);
252
bc86863d
SG		 253 /* wait for scan work complete */
254 flush_workqueue(local->workqueue);
255
d43c6b6e
DS		 256 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning),
257 "%s called with hardware scan in progress\n", __func__);
bc86863d 258
f2753ddb 259 rtnl_lock();
4136c422 260 ieee80211_scan_cancel(local);
f2753ddb
JB		 261 ieee80211_reconfig(local);
262 rtnl_unlock();
263}
264
265void ieee80211_restart_hw(struct ieee80211_hw *hw)
266{
267 struct ieee80211_local *local = hw_to_local(hw);
268
b5878a2d
JB		 269 trace_api_restart_hw(local);
270
b196d031
MB		 271 wiphy_info(hw->wiphy,
272 "Hardware restart was requested\n");
273
18145c69 274 /* use this reason, ieee80211_reconfig will unblock it */
445ea4e8 275 ieee80211_stop_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
cca07b00
LC		 276 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
277 false);
f2753ddb 278
04800ada
AN		 279 /*
280 * Stop all Rx during the reconfig. We don't want state changes
281 * or driver callbacks while this is in progress.
282 */
283 local->in_reconfig = true;
284 barrier();
285
f2753ddb
JB		 286 schedule_work(&local->restart_work);
287}
288EXPORT_SYMBOL(ieee80211_restart_hw);
289
26b36cfe 290#ifdef CONFIG_INET
2b2c009e
JO		 291static int ieee80211_ifa_changed(struct notifier_block *nb,
292 unsigned long data, void *arg)
293{
294 struct in_ifaddr *ifa = arg;
295 struct ieee80211_local *local =
296 container_of(nb, struct ieee80211_local,
297 ifa_notifier);
298 struct net_device *ndev = ifa->ifa_dev->dev;
299 struct wireless_dev *wdev = ndev->ieee80211_ptr;
68542962 300 struct in_device *idev;
2b2c009e 301 struct ieee80211_sub_if_data *sdata;
68542962 302 struct ieee80211_bss_conf *bss_conf;
2b2c009e 303 struct ieee80211_if_managed *ifmgd;
68542962 304 int c = 0;
2b2c009e
JO		 305
306 /* Make sure it's our interface that got changed */
307 if (!wdev)
308 return NOTIFY_DONE;
309
310 if (wdev->wiphy != local->hw.wiphy)
311 return NOTIFY_DONE;
312
2b2c009e 313 sdata = IEEE80211_DEV_TO_SUB_IF(ndev);
68542962 314 bss_conf = &sdata->vif.bss_conf;
2b2c009e
JO		 315
316 /* ARP filtering is only supported in managed mode */
317 if (sdata->vif.type != NL80211_IFTYPE_STATION)
318 return NOTIFY_DONE;
319
95ae6b22 320 idev = __in_dev_get_rtnl(sdata->dev);
68542962
JO		 321 if (!idev)
322 return NOTIFY_DONE;
323
2b2c009e 324 ifmgd = &sdata->u.mgd;
8d61ffa5 325 sdata_lock(sdata);
68542962
JO		 326
327 /* Copy the addresses to the bss_conf list */
328 ifa = idev->ifa_list;
0f19b41e
JB		 329 while (ifa) {
330 if (c < IEEE80211_BSS_ARP_ADDR_LIST_LEN)
331 bss_conf->arp_addr_list[c] = ifa->ifa_address;
68542962
JO		 332 ifa = ifa->ifa_next;
333 c++;
334 }
335
68542962
JO		 336 bss_conf->arp_addr_cnt = c;
337
53d69c39 338 /* Configure driver only if associated (which also implies it is up) */
0f19b41e 339 if (ifmgd->associated)
68542962
JO		 340 ieee80211_bss_info_change_notify(sdata,
341 BSS_CHANGED_ARP_FILTER);
68542962 342
8d61ffa5 343 sdata_unlock(sdata);
2b2c009e 344
8bd811aa 345 return NOTIFY_OK;
2b2c009e 346}
26b36cfe 347#endif
2b2c009e 348
a65240c1
JB		 349#if IS_ENABLED(CONFIG_IPV6)
350static int ieee80211_ifa6_changed(struct notifier_block *nb,
351 unsigned long data, void *arg)
352{
353 struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)arg;
354 struct inet6_dev *idev = ifa->idev;
355 struct net_device *ndev = ifa->idev->dev;
356 struct ieee80211_local *local =
357 container_of(nb, struct ieee80211_local, ifa6_notifier);
358 struct wireless_dev *wdev = ndev->ieee80211_ptr;
359 struct ieee80211_sub_if_data *sdata;
360
361 /* Make sure it's our interface that got changed */
362 if (!wdev || wdev->wiphy != local->hw.wiphy)
363 return NOTIFY_DONE;
364
365 sdata = IEEE80211_DEV_TO_SUB_IF(ndev);
366
367 /*
368 * For now only support station mode. This is mostly because
369 * doing AP would have to handle AP_VLAN in some way ...
370 */
371 if (sdata->vif.type != NL80211_IFTYPE_STATION)
372 return NOTIFY_DONE;
373
374 drv_ipv6_addr_change(local, sdata, idev);
375
8bd811aa 376 return NOTIFY_OK;
a65240c1
JB		 377}
378#endif
379
2e161f78
JB		 380/* There isn't a lot of sense in it, but you can transmit anything you like */
381static const struct ieee80211_txrx_stypes
382ieee80211_default_mgmt_stypes[NUM_NL80211_IFTYPES] = {
383 [NL80211_IFTYPE_ADHOC] = {
384 .tx = 0xffff,
3bfda62c
WH		 385 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
386 BIT(IEEE80211_STYPE_AUTH >> 4) |
41e31b8b
AQ		 387 BIT(IEEE80211_STYPE_DEAUTH >> 4) |
388 BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
2e161f78
JB		 389 },
390 [NL80211_IFTYPE_STATION] = {
391 .tx = 0xffff,
392 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
393 BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
394 },
395 [NL80211_IFTYPE_AP] = {
396 .tx = 0xffff,
397 .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) |
398 BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) |
399 BIT(IEEE80211_STYPE_PROBE_REQ >> 4) |
400 BIT(IEEE80211_STYPE_DISASSOC >> 4) |
401 BIT(IEEE80211_STYPE_AUTH >> 4) |
402 BIT(IEEE80211_STYPE_DEAUTH >> 4) |
403 BIT(IEEE80211_STYPE_ACTION >> 4),
404 },
405 [NL80211_IFTYPE_AP_VLAN] = {
406 /* copy AP */
407 .tx = 0xffff,
408 .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) |
409 BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) |
410 BIT(IEEE80211_STYPE_PROBE_REQ >> 4) |
411 BIT(IEEE80211_STYPE_DISASSOC >> 4) |
412 BIT(IEEE80211_STYPE_AUTH >> 4) |
413 BIT(IEEE80211_STYPE_DEAUTH >> 4) |
2ca27bcf
JB		 414 BIT(IEEE80211_STYPE_ACTION >> 4),
415 },
416 [NL80211_IFTYPE_P2P_CLIENT] = {
417 .tx = 0xffff,
418 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
419 BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
420 },
421 [NL80211_IFTYPE_P2P_GO] = {
422 .tx = 0xffff,
423 .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) |
424 BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) |
425 BIT(IEEE80211_STYPE_PROBE_REQ >> 4) |
2e161f78
JB		 426 BIT(IEEE80211_STYPE_DISASSOC >> 4) |
427 BIT(IEEE80211_STYPE_AUTH >> 4) |
428 BIT(IEEE80211_STYPE_DEAUTH >> 4) |
429 BIT(IEEE80211_STYPE_ACTION >> 4),
430 },
c7108a71
JC		 431 [NL80211_IFTYPE_MESH_POINT] = {
432 .tx = 0xffff,
71839121
JC		 433 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
434 BIT(IEEE80211_STYPE_AUTH >> 4) |
435 BIT(IEEE80211_STYPE_DEAUTH >> 4),
c7108a71 436 },
f142c6b9
JB		 437 [NL80211_IFTYPE_P2P_DEVICE] = {
438 .tx = 0xffff,
439 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
440 BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
441 },
2e161f78
JB		 442};
443
ef96a842
BG		 444static const struct ieee80211_ht_cap mac80211_ht_capa_mod_mask = {
445 .ampdu_params_info = IEEE80211_HT_AMPDU_PARM_FACTOR |
446 IEEE80211_HT_AMPDU_PARM_DENSITY,
447
448 .cap_info = cpu_to_le16(IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
449 IEEE80211_HT_CAP_MAX_AMSDU |
bc0784d9 450 IEEE80211_HT_CAP_SGI_20 |
a2e7495d 451 IEEE80211_HT_CAP_SGI_40 |
9a07bf50
JM		 452 IEEE80211_HT_CAP_LDPC_CODING |
453 IEEE80211_HT_CAP_40MHZ_INTOLERANT),
ef96a842
BG		 454 .mcs = {
455 .rx_mask = { 0xff, 0xff, 0xff, 0xff, 0xff,
456 0xff, 0xff, 0xff, 0xff, 0xff, },
457 },
458};
459
dd5ecfea
JB		 460static const struct ieee80211_vht_cap mac80211_vht_capa_mod_mask = {
461 .vht_cap_info =
462 cpu_to_le32(IEEE80211_VHT_CAP_RXLDPC |
463 IEEE80211_VHT_CAP_SHORT_GI_80 |
464 IEEE80211_VHT_CAP_SHORT_GI_160 |
465 IEEE80211_VHT_CAP_RXSTBC_1 |
466 IEEE80211_VHT_CAP_RXSTBC_2 |
467 IEEE80211_VHT_CAP_RXSTBC_3 |
468 IEEE80211_VHT_CAP_RXSTBC_4 |
469 IEEE80211_VHT_CAP_TXSTBC |
470 IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE |
471 IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE |
472 IEEE80211_VHT_CAP_TX_ANTENNA_PATTERN |
473 IEEE80211_VHT_CAP_RX_ANTENNA_PATTERN |
474 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK),
475 .supp_mcs = {
476 .rx_mcs_map = cpu_to_le16(~0),
477 .tx_mcs_map = cpu_to_le16(~0),
478 },
479};
480
ad28757e
BG		 481struct ieee80211_hw *ieee80211_alloc_hw_nm(size_t priv_data_len,
482 const struct ieee80211_ops *ops,
483 const char *requested_name)
f0706e82 484{
f0706e82 485 struct ieee80211_local *local;
96f5e66e 486 int priv_size, i;
f0706e82 487 struct wiphy *wiphy;
fe57d9f5 488 bool use_chanctx;
f0706e82 489
c0af0734
JB		 490 if (WARN_ON(!ops->tx || !ops->start || !ops->stop || !ops->config ||
491 !ops->add_interface || !ops->remove_interface ||
492 !ops->configure_filter))
493 return NULL;
494
f09603a2
JB		 495 if (WARN_ON(ops->sta_state && (ops->sta_add || ops->sta_remove)))
496 return NULL;
497
e269d860
JB		 498 /* check all or no channel context operations exist */
499 i = !!ops->add_chanctx + !!ops->remove_chanctx +
500 !!ops->change_chanctx + !!ops->assign_vif_chanctx +
501 !!ops->unassign_vif_chanctx;
502 if (WARN_ON(i != 0 && i != 5))
503 return NULL;
fe57d9f5 504 use_chanctx = i == 5;
e269d860 505
f0706e82
JB		 506 /* Ensure 32-byte alignment of our private data and hw private data.
507 * We use the wiphy priv data for both our ieee80211_local and for
508 * the driver's private data
509 *
510 * In memory it'll be like this:
511 *
512 * +-------------------------+
513 * | struct wiphy |
514 * +-------------------------+
515 * | struct ieee80211_local |
516 * +-------------------------+
517 * | driver's private data |
518 * +-------------------------+
519 *
520 */
1ce8e7b5 521 priv_size = ALIGN(sizeof(*local), NETDEV_ALIGN) + priv_data_len;
f0706e82 522
ad28757e 523 wiphy = wiphy_new_nm(&mac80211_config_ops, priv_size, requested_name);
f0706e82
JB		 524
525 if (!wiphy)
526 return NULL;
527
2e161f78
JB		 528 wiphy->mgmt_stypes = ieee80211_default_mgmt_stypes;
529
207aba60
JB		 530 wiphy->privid = mac80211_wiphy_privid;
531
9bc383de
JB		 532 wiphy->flags |= WIPHY_FLAG_NETNS_OK |
533 WIPHY_FLAG_4ADDR_AP |
ee971924 534 WIPHY_FLAG_4ADDR_STATION |
7c4ef712 535 WIPHY_FLAG_REPORTS_OBSS |
81ddbb5c
JB		 536 WIPHY_FLAG_OFFCHAN_TX;
537
538 if (ops->remain_on_channel)
539 wiphy->flags |= WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL;
207aba60 540
b292219f
JB		 541 wiphy->features |= NL80211_FEATURE_SK_TX_STATUS |
542 NL80211_FEATURE_SAE |
1ea6f9c0 543 NL80211_FEATURE_HT_IBSS |
a6dad6a2 544 NL80211_FEATURE_VIF_TXPOWER |
b5dfae02 545 NL80211_FEATURE_MAC_ON_CREATE |
a6dad6a2 546 NL80211_FEATURE_USERSPACE_MPM;
a729cff8 547
cd2bb512 548 if (!ops->hw_scan)
5c95b940
AQ		 549 wiphy->features |= NL80211_FEATURE_LOW_PRIORITY_SCAN |
550 NL80211_FEATURE_AP_SCAN;
551
cd2bb512 552
207aba60
JB		 553 if (!ops->set_key)
554 wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
18a83659 555
0c1ad2ca 556 wiphy->bss_priv_size = sizeof(struct ieee80211_bss);
f0706e82
JB		 557
558 local = wiphy_priv(wiphy);
de95a54b 559
f0706e82
JB		 560 local->hw.wiphy = wiphy;
561
1ce8e7b5 562 local->hw.priv = (char *)local + ALIGN(sizeof(*local), NETDEV_ALIGN);
f0706e82
JB		 563
564 local->ops = ops;
fe57d9f5 565 local->use_chanctx = use_chanctx;
f0706e82 566
e6a9854b
JB		 567 /* set up some defaults */
568 local->hw.queues = 1;
569 local->hw.max_rates = 1;
78be49ec 570 local->hw.max_report_rates = 0;
df6ba5d8 571 local->hw.max_rx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF;
39e68712 572 local->hw.max_tx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF;
3a25a8c8 573 local->hw.offchannel_tx_hw_queue = IEEE80211_INVAL_HW_QUEUE;
b9a5f8ca
JM		 574 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
575 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
ac55d2fe
JB		 576 local->hw.radiotap_mcs_details = IEEE80211_RADIOTAP_MCS_HAVE_MCS |
577 IEEE80211_RADIOTAP_MCS_HAVE_GI |
578 IEEE80211_RADIOTAP_MCS_HAVE_BW;
51648921
JB		 579 local->hw.radiotap_vht_details = IEEE80211_RADIOTAP_VHT_KNOWN_GI |
580 IEEE80211_RADIOTAP_VHT_KNOWN_BANDWIDTH;
219c3867
AB		 581 local->hw.uapsd_queues = IEEE80211_DEFAULT_UAPSD_QUEUES;
582 local->hw.uapsd_max_sp_len = IEEE80211_DEFAULT_MAX_SP_LEN;
1ea6f9c0 583 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
ef96a842 584 wiphy->ht_capa_mod_mask = &mac80211_ht_capa_mod_mask;
dd5ecfea 585 wiphy->vht_capa_mod_mask = &mac80211_vht_capa_mod_mask;
f0706e82 586
e9a21949
LC		 587 local->ext_capa[7] = WLAN_EXT_CAPA8_OPMODE_NOTIF;
588
589 wiphy->extended_capabilities = local->ext_capa;
590 wiphy->extended_capabilities_mask = local->ext_capa;
591 wiphy->extended_capabilities_len =
592 ARRAY_SIZE(local->ext_capa);
593
79010420 594 INIT_LIST_HEAD(&local->interfaces);
2f787b0b
YH		 595
596 __hw_addr_init(&local->mc_list);
597
c771c9d8 598 mutex_init(&local->iflist_mtx);
a1699b75 599 mutex_init(&local->mtx);
f0706e82 600
ad0e2b5a 601 mutex_init(&local->key_mtx);
3b8d81e0 602 spin_lock_init(&local->filter_lock);
f9e124fb 603 spin_lock_init(&local->rx_path_lock);
ce7c9111
KV		 604 spin_lock_init(&local->queue_stop_reason_lock);
605
d01a1e65
MK		 606 INIT_LIST_HEAD(&local->chanctx_list);
607 mutex_init(&local->chanctx_mtx);
608
c2b13452 609 INIT_DELAYED_WORK(&local->scan_work, ieee80211_scan_work);
f0706e82 610
f2753ddb
JB		 611 INIT_WORK(&local->restart_work, ieee80211_restart_work);
612
164eb02d
SW		 613 INIT_WORK(&local->radar_detected_work,
614 ieee80211_dfs_radar_detected_work);
615
3ac64bee 616 INIT_WORK(&local->reconfig_filter, ieee80211_reconfig_filter);
0f78231b 617 local->smps_mode = IEEE80211_SMPS_OFF;
3ac64bee 618
520eb820
KV		 619 INIT_WORK(&local->dynamic_ps_enable_work,
620 ieee80211_dynamic_ps_enable_work);
621 INIT_WORK(&local->dynamic_ps_disable_work,
622 ieee80211_dynamic_ps_disable_work);
623 setup_timer(&local->dynamic_ps_timer,
624 ieee80211_dynamic_ps_timer, (unsigned long) local);
625
85a9994a
LC		 626 INIT_WORK(&local->sched_scan_stopped_work,
627 ieee80211_sched_scan_stopped_work);
628
a729cff8
JB		 629 spin_lock_init(&local->ack_status_lock);
630 idr_init(&local->ack_status_frames);
a729cff8 631
f0706e82
JB		 632 sta_info_init(local);
633
a6a67db2 634 for (i = 0; i < IEEE80211_MAX_QUEUES; i++) {
2a577d98 635 skb_queue_head_init(&local->pending[i]);
a6a67db2
JB		 636 atomic_set(&local->agg_queue_stop[i], 0);
637 }
f0706e82
JB		 638 tasklet_init(&local->tx_pending_tasklet, ieee80211_tx_pending,
639 (unsigned long)local);
f0706e82
JB		 640
641 tasklet_init(&local->tasklet,
642 ieee80211_tasklet_handler,
643 (unsigned long) local);
f0706e82
JB		 644
645 skb_queue_head_init(&local->skb_queue);
646 skb_queue_head_init(&local->skb_queue_unreliable);
647
fe67c913
JB		 648 ieee80211_led_names(local);
649
2eb278e0 650 ieee80211_roc_setup(local);
21f83589 651
005e472b 652 return &local->hw;
f0706e82 653}
ad28757e 654EXPORT_SYMBOL(ieee80211_alloc_hw_nm);
f0706e82 655
2475b1cc 656static int ieee80211_init_cipher_suites(struct ieee80211_local *local)
f0706e82 657{
2475b1cc
MS		 658 bool have_wep = !(IS_ERR(local->wep_tx_tfm) ||
659 IS_ERR(local->wep_rx_tfm));
660 bool have_mfp = local->hw.flags & IEEE80211_HW_MFP_CAPABLE;
2475b1cc
MS		 661 int n_suites = 0, r = 0, w = 0;
662 u32 *suites;
25e47c18 663 static const u32 cipher_suites[] = {
5daa8a8e 664 /* keep WEP first, it may be removed below */
25e47c18
JB		 665 WLAN_CIPHER_SUITE_WEP40,
666 WLAN_CIPHER_SUITE_WEP104,
667 WLAN_CIPHER_SUITE_TKIP,
668 WLAN_CIPHER_SUITE_CCMP,
2b2ba0db 669 WLAN_CIPHER_SUITE_CCMP_256,
00b9cfa3
JM		 670 WLAN_CIPHER_SUITE_GCMP,
671 WLAN_CIPHER_SUITE_GCMP_256,
25e47c18
JB		 672
673 /* keep last -- depends on hw flags! */
56c52da2
JM		 674 WLAN_CIPHER_SUITE_AES_CMAC,
675 WLAN_CIPHER_SUITE_BIP_CMAC_256,
25e47c18 676 };
8318d78a 677
fa7e1fbc
JB		 678 if (local->hw.flags & IEEE80211_HW_SW_CRYPTO_CONTROL ||
679 local->hw.wiphy->cipher_suites) {
680 /* If the driver advertises, or doesn't support SW crypto,
681 * we only need to remove WEP if necessary.
682 */
683 if (have_wep)
684 return 0;
685
686 /* well if it has _no_ ciphers ... fine */
687 if (!local->hw.wiphy->n_cipher_suites)
688 return 0;
689
690 /* Driver provides cipher suites, but we need to exclude WEP */
691 suites = kmemdup(local->hw.wiphy->cipher_suites,
692 sizeof(u32) * local->hw.wiphy->n_cipher_suites,
693 GFP_KERNEL);
694 if (!suites)
695 return -ENOMEM;
2475b1cc 696
fa7e1fbc
JB		 697 for (r = 0; r < local->hw.wiphy->n_cipher_suites; r++) {
698 u32 suite = local->hw.wiphy->cipher_suites[r];
699
700 if (suite == WLAN_CIPHER_SUITE_WEP40 ||
701 suite == WLAN_CIPHER_SUITE_WEP104)
702 continue;
703 suites[w++] = suite;
704 }
705 } else if (!local->hw.cipher_schemes) {
706 /* If the driver doesn't have cipher schemes, there's nothing
707 * else to do other than assign the (software supported and
708 * perhaps offloaded) cipher suites.
709 */
2475b1cc
MS		 710 local->hw.wiphy->cipher_suites = cipher_suites;
711 local->hw.wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
712
713 if (!have_mfp)
56c52da2 714 local->hw.wiphy->n_cipher_suites -= 2;
2475b1cc
MS		 715
716 if (!have_wep) {
717 local->hw.wiphy->cipher_suites += 2;
718 local->hw.wiphy->n_cipher_suites -= 2;
719 }
720
fa7e1fbc 721 /* not dynamically allocated, so just return */
2475b1cc 722 return 0;
fa7e1fbc
JB		 723 } else {
724 const struct ieee80211_cipher_scheme *cs;
2475b1cc 725
fa7e1fbc
JB		 726 cs = local->hw.cipher_schemes;
727
728 /* Driver specifies cipher schemes only (but not cipher suites
729 * including the schemes)
730 *
00b9cfa3 731 * We start counting ciphers defined by schemes, TKIP, CCMP,
2b2ba0db 732 * CCMP-256, GCMP, and GCMP-256
2475b1cc 733 */
2b2ba0db 734 n_suites = local->hw.n_cipher_schemes + 5;
2475b1cc
MS		 735
736 /* check if we have WEP40 and WEP104 */
737 if (have_wep)
738 n_suites += 2;
739
56c52da2 740 /* check if we have AES_CMAC, BIP-CMAC-256 */
2475b1cc 741 if (have_mfp)
56c52da2 742 n_suites += 2;
2475b1cc
MS		 743
744 suites = kmalloc(sizeof(u32) * n_suites, GFP_KERNEL);
745 if (!suites)
746 return -ENOMEM;
747
748 suites[w++] = WLAN_CIPHER_SUITE_CCMP;
2b2ba0db 749 suites[w++] = WLAN_CIPHER_SUITE_CCMP_256;
2475b1cc 750 suites[w++] = WLAN_CIPHER_SUITE_TKIP;
00b9cfa3
JM		 751 suites[w++] = WLAN_CIPHER_SUITE_GCMP;
752 suites[w++] = WLAN_CIPHER_SUITE_GCMP_256;
2475b1cc
MS		 753
754 if (have_wep) {
755 suites[w++] = WLAN_CIPHER_SUITE_WEP40;
756 suites[w++] = WLAN_CIPHER_SUITE_WEP104;
757 }
758
56c52da2 759 if (have_mfp) {
2475b1cc 760 suites[w++] = WLAN_CIPHER_SUITE_AES_CMAC;
56c52da2
JM		 761 suites[w++] = WLAN_CIPHER_SUITE_BIP_CMAC_256;
762 }
2475b1cc
MS		 763
764 for (r = 0; r < local->hw.n_cipher_schemes; r++)
765 suites[w++] = cs[r].cipher;
2475b1cc
MS		 766 }
767
768 local->hw.wiphy->cipher_suites = suites;
769 local->hw.wiphy->n_cipher_suites = w;
770 local->wiphy_ciphers_allocated = true;
771
772 return 0;
773}
774
775int ieee80211_register_hw(struct ieee80211_hw *hw)
776{
777 struct ieee80211_local *local = hw_to_local(hw);
778 int result, i;
779 enum ieee80211_band band;
780 int channels, max_bitrates;
781 bool supp_ht, supp_vht;
782 netdev_features_t feature_whitelist;
783 struct cfg80211_chan_def dflt_chandef = {};
784
3a25a8c8
JB		 785 if (hw->flags & IEEE80211_HW_QUEUE_CONTROL &&
786 (local->hw.offchannel_tx_hw_queue == IEEE80211_INVAL_HW_QUEUE ||
787 local->hw.offchannel_tx_hw_queue >= local->hw.queues))
788 return -EINVAL;
789
a7a6bdd0
AN		 790 if ((hw->wiphy->features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH) &&
791 (!local->ops->tdls_channel_switch ||
8a4d32f3
AN		 792 !local->ops->tdls_cancel_channel_switch ||
793 !local->ops->tdls_recv_channel_switch))
a7a6bdd0
AN		 794 return -EOPNOTSUPP;
795
38bb3e9d 796#ifdef CONFIG_PM
964dc9e2 797 if (hw->wiphy->wowlan && (!local->ops->suspend || !local->ops->resume))
eecc4800 798 return -EINVAL;
dfb89c56 799#endif
eecc4800 800
fe57d9f5
JB		 801 if (!local->use_chanctx) {
802 for (i = 0; i < local->hw.wiphy->n_iface_combinations; i++) {
803 const struct ieee80211_iface_combination *comb;
804
805 comb = &local->hw.wiphy->iface_combinations[i];
806
807 if (comb->num_different_channels > 1)
808 return -EINVAL;
809 }
746a3365 810 } else {
fe57d9f5
JB		 811 /*
812 * WDS is currently prohibited when channel contexts are used
813 * because there's no clear definition of which channel WDS
814 * type interfaces use
815 */
816 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_WDS))
817 return -EINVAL;
164eb02d 818
486cf4c0 819 /* DFS is not supported with multi-channel combinations yet */
164eb02d
SW		 820 for (i = 0; i < local->hw.wiphy->n_iface_combinations; i++) {
821 const struct ieee80211_iface_combination *comb;
822
823 comb = &local->hw.wiphy->iface_combinations[i];
824
486cf4c0
MK		 825 if (comb->radar_detect_widths &&
826 comb->num_different_channels > 1)
164eb02d
SW		 827 return -EINVAL;
828 }
fe57d9f5
JB		 829 }
830
72d78728
AN		 831 /* Only HW csum features are currently compatible with mac80211 */
832 feature_whitelist = NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
833 NETIF_F_HW_CSUM;
834 if (WARN_ON(hw->netdev_features & ~feature_whitelist))
835 return -EINVAL;
836
78be49ec
HS		 837 if (hw->max_report_rates == 0)
838 hw->max_report_rates = hw->max_rates;
839
04ecd257
JB		 840 local->rx_chains = 1;
841
8318d78a
JB		 842 /*
843 * generic code guarantees at least one band,
844 * set this very early because much code assumes
845 * that hw.conf.channel is assigned
846 */
2a519311 847 channels = 0;
de95a54b 848 max_bitrates = 0;
5ef2d41a 849 supp_ht = false;
ba0afa2f 850 supp_vht = false;
8318d78a
JB		 851 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
852 struct ieee80211_supported_band *sband;
853
854 sband = local->hw.wiphy->bands[band];
de95a54b
JB		 855 if (!sband)
856 continue;
fffa4b1c
KB		 857
858 if (!dflt_chandef.chan) {
859 cfg80211_chandef_create(&dflt_chandef,
860 &sband->channels[0],
861 NL80211_CHAN_NO_HT);
8318d78a 862 /* init channel we're on */
fffa4b1c
KB		 863 if (!local->use_chanctx && !local->_oper_chandef.chan) {
864 local->hw.conf.chandef = dflt_chandef;
865 local->_oper_chandef = dflt_chandef;
866 }
867 local->monitor_chandef = dflt_chandef;
8318d78a 868 }
fffa4b1c 869
de95a54b
JB		 870 channels += sband->n_channels;
871
872 if (max_bitrates < sband->n_bitrates)
873 max_bitrates = sband->n_bitrates;
5ef2d41a 874 supp_ht = supp_ht || sband->ht_cap.ht_supported;
ba0afa2f 875 supp_vht = supp_vht || sband->vht_cap.vht_supported;
04ecd257
JB		 876
877 if (sband->ht_cap.ht_supported)
878 local->rx_chains =
879 max(ieee80211_mcs_to_chains(&sband->ht_cap.mcs),
880 local->rx_chains);
881
882 /* TODO: consider VHT for RX chains, hopefully it's the same */
8318d78a 883 }
f0706e82 884
f59ac048 885 /* if low-level driver supports AP, we also support VLAN */
7527a782
JB		 886 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) {
887 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP_VLAN);
888 hw->wiphy->software_iftypes |= BIT(NL80211_IFTYPE_AP_VLAN);
889 }
f59ac048
LR		 890
891 /* mac80211 always supports monitor */
7527a782
JB		 892 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR);
893 hw->wiphy->software_iftypes |= BIT(NL80211_IFTYPE_MONITOR);
894
55de908a 895 /* mac80211 doesn't support more than one IBSS interface right now */
8e621fc9
JB		 896 for (i = 0; i < hw->wiphy->n_iface_combinations; i++) {
897 const struct ieee80211_iface_combination *c;
898 int j;
899
900 c = &hw->wiphy->iface_combinations[i];
901
8e621fc9
JB		 902 for (j = 0; j < c->n_limits; j++)
903 if ((c->limits[j].types & BIT(NL80211_IFTYPE_ADHOC)) &&
904 c->limits[j].max > 1)
905 return -EINVAL;
906 }
907
5b0ec94f
JB		 908 local->int_scan_req = kzalloc(sizeof(*local->int_scan_req) +
909 sizeof(void *) * channels, GFP_KERNEL);
910 if (!local->int_scan_req)
911 return -ENOMEM;
912
913 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
914 if (!local->hw.wiphy->bands[band])
915 continue;
916 local->int_scan_req->rates[band] = (u32) -1;
917 }
918
5eb5a52d
JB		 919#ifndef CONFIG_MAC80211_MESH
920 /* mesh depends on Kconfig, but drivers should set it if they want */
921 local->hw.wiphy->interface_modes &= ~BIT(NL80211_IFTYPE_MESH_POINT);
922#endif
923
1570ca59
JC		 924 /* if the underlying driver supports mesh, mac80211 will (at least)
925 * provide routing of mesh authentication frames to userspace */
926 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_MESH_POINT))
927 local->hw.wiphy->flags |= WIPHY_FLAG_MESH_AUTH;
928
a621fa4d
JB		 929 /* mac80211 supports control port protocol changing */
930 local->hw.wiphy->flags |= WIPHY_FLAG_CONTROL_PORT_PROTOCOL;
931
52512072 932 if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM) {
77965c97 933 local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
52512072 934 } else if (local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC) {
77965c97 935 local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC;
52512072 936 if (hw->max_signal <= 0) {
937 result = -EINVAL;
938 goto fail_wiphy_register;
939 }
940 }
77965c97 941
de95a54b
JB		 942 /*
943 * Calculate scan IE length -- we need this to alloc
944 * memory and to subtract from the driver limit. It
dc9f48ce 945 * includes the DS Params, (extended) supported rates, and HT
de95a54b
JB		 946 * information -- SSID is the driver's responsibility.
947 */
dc9f48ce
JM		 948 local->scan_ies_len = 4 + max_bitrates /* (ext) supp rates */ +
949 3 /* DS Params */;
5ef2d41a
JB		 950 if (supp_ht)
951 local->scan_ies_len += 2 + sizeof(struct ieee80211_ht_cap);
de95a54b 952
d0e6c21a 953 if (supp_vht)
ba0afa2f 954 local->scan_ies_len +=
d4950281 955 2 + sizeof(struct ieee80211_vht_cap);
ba0afa2f 956
de95a54b
JB		 957 if (!local->ops->hw_scan) {
958 /* For hw_scan, driver needs to set these up. */
959 local->hw.wiphy->max_scan_ssids = 4;
960 local->hw.wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
961 }
962
963 /*
964 * If the driver supports any scan IEs, then assume the
965 * limit includes the IEs mac80211 will add, otherwise
966 * leave it at zero and let the driver sort it out; we
967 * still pass our IEs to the driver but userspace will
968 * not be allowed to in that case.
969 */
970 if (local->hw.wiphy->max_scan_ie_len)
971 local->hw.wiphy->max_scan_ie_len -= local->scan_ies_len;
972
2475b1cc
MS		 973 WARN_ON(!ieee80211_cs_list_valid(local->hw.cipher_schemes,
974 local->hw.n_cipher_schemes));
975
976 result = ieee80211_init_cipher_suites(local);
977 if (result < 0)
978 goto fail_wiphy_register;
25e47c18 979
21f83589
JB		 980 if (!local->ops->remain_on_channel)
981 local->hw.wiphy->max_remain_on_channel_duration = 5000;
a293911d 982
dfe018bf
AN		 983 /* mac80211 based drivers don't support internal TDLS setup */
984 if (local->hw.wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS)
985 local->hw.wiphy->flags |= WIPHY_FLAG_TDLS_EXTERNAL_SETUP;
986
e9a21949
LC		 987 /* mac80211 supports eCSA, if the driver supports STA CSA at all */
988 if (local->hw.flags & IEEE80211_HW_CHANCTX_STA_CSA)
989 local->ext_capa[0] |= WLAN_EXT_CAPA1_EXT_CHANNEL_SWITCHING;
990
0d06d9ba
AO		 991 local->hw.wiphy->max_num_csa_counters = IEEE80211_MAX_CSA_COUNTERS_NUM;
992
f0706e82
JB		 993 result = wiphy_register(local->hw.wiphy);
994 if (result < 0)
2a519311 995 goto fail_wiphy_register;
f0706e82 996
e2530083
JB		 997 /*
998 * We use the number of queues for feature tests (QoS, HT) internally
999 * so restrict them appropriately.
1000 */
e2530083
JB		 1001 if (hw->queues > IEEE80211_MAX_QUEUES)
1002 hw->queues = IEEE80211_MAX_QUEUES;
e2530083 1003
42935eca 1004 local->workqueue =
d8537548 1005 alloc_ordered_workqueue("%s", 0, wiphy_name(local->hw.wiphy));
42935eca 1006 if (!local->workqueue) {
f0706e82
JB		 1007 result = -ENOMEM;
1008 goto fail_workqueue;
1009 }
1010
b306f453
JB		 1011 /*
1012 * The hardware needs headroom for sending the frame,
1013 * and we need some headroom for passing the frame to monitor
1014 * interfaces, but never both at the same time.
1015 */
33ccad35 1016 local->tx_headroom = max_t(unsigned int , local->hw.extra_tx_headroom,
a2fe8166 1017 IEEE80211_TX_STATUS_HEADROOM);
b306f453 1018
e9f207f0
JB		 1019 debugfs_hw_add(local);
1020
b446918b
HS		 1021 /*
1022 * if the driver doesn't specify a max listen interval we
1023 * use 5 which should be a safe default
1024 */
ea95bba4 1025 if (local->hw.max_listen_interval == 0)
b446918b 1026 local->hw.max_listen_interval = 5;
ea95bba4
TW		 1027
1028 local->hw.conf.listen_interval = local->hw.max_listen_interval;
1029
ff616381 1030 local->dynamic_ps_forced_timeout = -1;
195e294d 1031
d4c4a9a1 1032 result = ieee80211_wep_init(local);
3473187d 1033 if (result < 0)
0fb9a9ec
JP		 1034 wiphy_debug(local->hw.wiphy, "Failed to initialize wep: %d\n",
1035 result);
d4c4a9a1 1036
24d47300
KB		 1037 local->hw.conf.flags = IEEE80211_CONF_IDLE;
1038
b57e6b56
MSS		 1039 ieee80211_led_init(local);
1040
f0706e82 1041 rtnl_lock();
f0706e82 1042
830f9038
JB		 1043 result = ieee80211_init_rate_ctrl_alg(local,
1044 hw->rate_control_algorithm);
f0706e82 1045 if (result < 0) {
0fb9a9ec
JP		 1046 wiphy_debug(local->hw.wiphy,
1047 "Failed to initialize rate control algorithm\n");
f0706e82
JB		 1048 goto fail_rate;
1049 }
1050
8dffff21 1051 /* add one default STA interface if supported */
e27513fb
BG		 1052 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_STATION) &&
1053 !(hw->flags & IEEE80211_HW_NO_AUTO_VIF)) {
8dffff21
JB		 1054 result = ieee80211_if_add(local, "wlan%d", NULL,
1055 NL80211_IFTYPE_STATION, NULL);
1056 if (result)
0fb9a9ec
JP		 1057 wiphy_warn(local->hw.wiphy,
1058 "Failed to add default virtual iface\n");
8dffff21 1059 }
f0706e82 1060
f0706e82
JB		 1061 rtnl_unlock();
1062
10f644a4
JB		 1063 local->network_latency_notifier.notifier_call =
1064 ieee80211_max_network_latency;
1065 result = pm_qos_add_notifier(PM_QOS_NETWORK_LATENCY,
1066 &local->network_latency_notifier);
54330bf6 1067 if (result)
10f644a4 1068 goto fail_pm_qos;
10f644a4 1069
26b36cfe 1070#ifdef CONFIG_INET
2b2c009e
JO		 1071 local->ifa_notifier.notifier_call = ieee80211_ifa_changed;
1072 result = register_inetaddr_notifier(&local->ifa_notifier);
1073 if (result)
1074 goto fail_ifa;
26b36cfe 1075#endif
2b2c009e 1076
a65240c1
JB		 1077#if IS_ENABLED(CONFIG_IPV6)
1078 local->ifa6_notifier.notifier_call = ieee80211_ifa6_changed;
1079 result = register_inet6addr_notifier(&local->ifa6_notifier);
1080 if (result)
1081 goto fail_ifa6;
1082#endif
1083
f0706e82
JB		 1084 return 0;
1085
a65240c1
JB		 1086#if IS_ENABLED(CONFIG_IPV6)
1087 fail_ifa6:
93c08c32 1088#ifdef CONFIG_INET
a65240c1
JB		 1089 unregister_inetaddr_notifier(&local->ifa_notifier);
1090#endif
1091#endif
1092#if defined(CONFIG_INET) || defined(CONFIG_IPV6)
2b2c009e
JO		 1093 fail_ifa:
1094 pm_qos_remove_notifier(PM_QOS_NETWORK_LATENCY,
1095 &local->network_latency_notifier);
93c08c32 1096#endif
10f644a4 1097 fail_pm_qos:
54330bf6
JB		 1098 rtnl_lock();
1099 rate_control_deinitialize(local);
10f644a4 1100 ieee80211_remove_interfaces(local);
10f644a4 1101 fail_rate:
f0706e82 1102 rtnl_unlock();
54330bf6 1103 ieee80211_led_exit(local);
d4c4a9a1 1104 ieee80211_wep_free(local);
42935eca 1105 destroy_workqueue(local->workqueue);
10f644a4 1106 fail_workqueue:
f0706e82 1107 wiphy_unregister(local->hw.wiphy);
10f644a4 1108 fail_wiphy_register:
3ffc2a90
JB		 1109 if (local->wiphy_ciphers_allocated)
1110 kfree(local->hw.wiphy->cipher_suites);
11ba964d 1111 kfree(local->int_scan_req);
f0706e82
JB		 1112 return result;
1113}
1114EXPORT_SYMBOL(ieee80211_register_hw);
1115
06d181a8
JB		 1116void ieee80211_napi_add(struct ieee80211_hw *hw, struct napi_struct *napi,
1117 struct net_device *napi_dev,
1118 int (*poll)(struct napi_struct *, int),
1119 int weight)
1120{
1121 struct ieee80211_local *local = hw_to_local(hw);
1122
1123 netif_napi_add(napi_dev, napi, poll, weight);
1124 local->napi = napi;
1125}
1126EXPORT_SYMBOL_GPL(ieee80211_napi_add);
1127
f0706e82
JB		 1128void ieee80211_unregister_hw(struct ieee80211_hw *hw)
1129{
1130 struct ieee80211_local *local = hw_to_local(hw);
f0706e82
JB		 1131
1132 tasklet_kill(&local->tx_pending_tasklet);
1133 tasklet_kill(&local->tasklet);
1134
10f644a4
JB		 1135 pm_qos_remove_notifier(PM_QOS_NETWORK_LATENCY,
1136 &local->network_latency_notifier);
26b36cfe 1137#ifdef CONFIG_INET
2b2c009e 1138 unregister_inetaddr_notifier(&local->ifa_notifier);
26b36cfe 1139#endif
a65240c1
JB		 1140#if IS_ENABLED(CONFIG_IPV6)
1141 unregister_inet6addr_notifier(&local->ifa6_notifier);
1142#endif
10f644a4 1143
f0706e82
JB		 1144 rtnl_lock();
1145
79010420
JB		 1146 /*
1147 * At this point, interface list manipulations are fine
1148 * because the driver cannot be handing us frames any
1149 * more and the tasklet is killed.
1150 */
75636525 1151 ieee80211_remove_interfaces(local);
5b2812e9 1152
f0706e82
JB		 1153 rtnl_unlock();
1154
258086a4 1155 cancel_work_sync(&local->restart_work);
3ac64bee 1156 cancel_work_sync(&local->reconfig_filter);
18db594a 1157 flush_work(&local->sched_scan_stopped_work);
3ac64bee 1158
f0706e82 1159 ieee80211_clear_tx_pending(local);
f0706e82
JB		 1160 rate_control_deinitialize(local);
1161
f64f9e71
JP		 1162 if (skb_queue_len(&local->skb_queue) ||
1163 skb_queue_len(&local->skb_queue_unreliable))
0fb9a9ec 1164 wiphy_warn(local->hw.wiphy, "skb_queue not empty\n");
f0706e82
JB		 1165 skb_queue_purge(&local->skb_queue);
1166 skb_queue_purge(&local->skb_queue_unreliable);
1167
42935eca 1168 destroy_workqueue(local->workqueue);
f0706e82 1169 wiphy_unregister(local->hw.wiphy);
ecb44335 1170 sta_info_stop(local);
f0706e82
JB		 1171 ieee80211_wep_free(local);
1172 ieee80211_led_exit(local);
5ba63533 1173 kfree(local->int_scan_req);
f0706e82
JB		 1174}
1175EXPORT_SYMBOL(ieee80211_unregister_hw);
1176
a729cff8
JB		 1177static int ieee80211_free_ack_frame(int id, void *p, void *data)
1178{
1179 WARN_ONCE(1, "Have pending ack frames!\n");
1180 kfree_skb(p);
1181 return 0;
1182}
1183
f0706e82
JB		 1184void ieee80211_free_hw(struct ieee80211_hw *hw)
1185{
1186 struct ieee80211_local *local = hw_to_local(hw);
1187
c771c9d8 1188 mutex_destroy(&local->iflist_mtx);
a1699b75 1189 mutex_destroy(&local->mtx);
c771c9d8 1190
3ffc2a90
JB		 1191 if (local->wiphy_ciphers_allocated)
1192 kfree(local->hw.wiphy->cipher_suites);
1193
a729cff8
JB		 1194 idr_for_each(&local->ack_status_frames,
1195 ieee80211_free_ack_frame, NULL);
1196 idr_destroy(&local->ack_status_frames);
1197
ad38bfc9
MG		 1198 kfree(rcu_access_pointer(local->tx_latency));
1199
54330bf6
JB		 1200 sta_info_stop(local);
1201
f0706e82
JB		 1202 wiphy_free(local->hw.wiphy);
1203}
1204EXPORT_SYMBOL(ieee80211_free_hw);
1205
f0706e82
JB		 1206static int __init ieee80211_init(void)
1207{
1208 struct sk_buff *skb;
1209 int ret;
1210
e039fa4a
JB		 1211 BUILD_BUG_ON(sizeof(struct ieee80211_tx_info) > sizeof(skb->cb));
1212 BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, driver_data) +
c6a1fa12 1213 IEEE80211_TX_INFO_DRIVER_DATA_SIZE > sizeof(skb->cb));
f0706e82 1214
cccf129f
FF		 1215 ret = rc80211_minstrel_init();
1216 if (ret)
1217 return ret;
1218
ec8aa669
FF		 1219 ret = rc80211_minstrel_ht_init();
1220 if (ret)
1221 goto err_minstrel;
1222
47846c9b
JB		 1223 ret = ieee80211_iface_init();
1224 if (ret)
1225 goto err_netdev;
e9f207f0 1226
f0706e82 1227 return 0;
47846c9b 1228 err_netdev:
ec8aa669
FF		 1229 rc80211_minstrel_ht_exit();
1230 err_minstrel:
47846c9b
JB		 1231 rc80211_minstrel_exit();
1232
1233 return ret;
f0706e82
JB		 1234}
1235
f0706e82
JB		 1236static void __exit ieee80211_exit(void)
1237{
ec8aa669 1238 rc80211_minstrel_ht_exit();
cccf129f 1239 rc80211_minstrel_exit();
ac71c691 1240
bf7cd94d 1241 ieee80211s_stop();
902acc78 1242
47846c9b 1243 ieee80211_iface_exit();
d07c7cf4
JB		 1244
1245 rcu_barrier();
f0706e82
JB		 1246}
1247
1248
ca9938fe 1249subsys_initcall(ieee80211_init);
f0706e82
JB		 1250module_exit(ieee80211_exit);
1251
1252MODULE_DESCRIPTION("IEEE 802.11 subsystem");
1253MODULE_LICENSE("GPL");
Linux 6.x block layer and io_uring tree(s)