projects / deliverable / linux.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
Merge tag 'davinci-fixes-for-v3.15-rc4' of git://git.kernel.org/pub/scm/linux/kernel...
[deliverable/linux.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>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 */
10
11#include <net/mac80211.h>
f0706e82
JB		 12#include <linux/module.h>
13#include <linux/init.h>
14#include <linux/netdevice.h>
15#include <linux/types.h>
16#include <linux/slab.h>
17#include <linux/skbuff.h>
18#include <linux/etherdevice.h>
19#include <linux/if_arp.h>
f0706e82 20#include <linux/rtnetlink.h>
f0706e82 21#include <linux/bitmap.h>
e8db0be1 22#include <linux/pm_qos.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"
e0eb6859 34#include "cfg.h"
e9f207f0 35#include "debugfs.h"
f0706e82 36
0d143fe1 37void ieee80211_configure_filter(struct ieee80211_local *local)
4150c572 38{
3ac64bee 39 u64 mc;
4150c572
JB		 40 unsigned int changed_flags;
41 unsigned int new_flags = 0;
42
53918994 43 if (atomic_read(&local->iff_promiscs))
4150c572
JB		 44 new_flags |= FIF_PROMISC_IN_BSS;
45
53918994 46 if (atomic_read(&local->iff_allmultis))
4150c572
JB		 47 new_flags |= FIF_ALLMULTI;
48
8a690674
BG		 49 if (local->monitors || test_bit(SCAN_SW_SCANNING, &local->scanning) ||
50 test_bit(SCAN_ONCHANNEL_SCANNING, &local->scanning))
8cc9a739
MW		 51 new_flags |= FIF_BCN_PRBRESP_PROMISC;
52
7be5086d
JB		 53 if (local->fif_probe_req || local->probe_req_reg)
54 new_flags |= FIF_PROBE_REQ;
55
8cc9a739
MW		 56 if (local->fif_fcsfail)
57 new_flags |= FIF_FCSFAIL;
58
59 if (local->fif_plcpfail)
60 new_flags |= FIF_PLCPFAIL;
61
62 if (local->fif_control)
63 new_flags |= FIF_CONTROL;
64
65 if (local->fif_other_bss)
66 new_flags |= FIF_OTHER_BSS;
4150c572 67
e3b90ca2
IP		 68 if (local->fif_pspoll)
69 new_flags |= FIF_PSPOLL;
70
3ac64bee 71 spin_lock_bh(&local->filter_lock);
4150c572
JB		 72 changed_flags = local->filter_flags ^ new_flags;
73
22bedad3 74 mc = drv_prepare_multicast(local, &local->mc_list);
3ac64bee
JB		 75 spin_unlock_bh(&local->filter_lock);
76
4150c572
JB		 77 /* be a bit nasty */
78 new_flags |= (1<<31);
79
3ac64bee 80 drv_configure_filter(local, changed_flags, &new_flags, mc);
4150c572
JB		 81
82 WARN_ON(new_flags & (1<<31));
83
84 local->filter_flags = new_flags & ~(1<<31);
85}
86
3ac64bee
JB		 87static void ieee80211_reconfig_filter(struct work_struct *work)
88{
89 struct ieee80211_local *local =
90 container_of(work, struct ieee80211_local, reconfig_filter);
91
92 ieee80211_configure_filter(local);
93}
94
55de908a 95static u32 ieee80211_hw_conf_chan(struct ieee80211_local *local)
b2c258fb 96{
1ea6f9c0 97 struct ieee80211_sub_if_data *sdata;
675a0b04 98 struct cfg80211_chan_def chandef = {};
55de908a 99 u32 changed = 0;
e8975581 100 int power;
ffd2778b 101 u32 offchannel_flag;
f0706e82 102
ffd2778b 103 offchannel_flag = local->hw.conf.flags & IEEE80211_CONF_OFFCHANNEL;
675a0b04 104
7ca15a0a
SW		 105 if (local->scan_chandef.chan) {
106 chandef = local->scan_chandef;
b23b025f 107 } else if (local->tmp_channel) {
675a0b04
KB		 108 chandef.chan = local->tmp_channel;
109 chandef.width = NL80211_CHAN_WIDTH_20_NOHT;
110 chandef.center_freq1 = chandef.chan->center_freq;
111 } else
112 chandef = local->_oper_chandef;
113
114 WARN(!cfg80211_chandef_valid(&chandef),
115 "control:%d MHz width:%d center: %d/%d MHz",
116 chandef.chan->center_freq, chandef.width,
117 chandef.center_freq1, chandef.center_freq2);
118
119 if (!cfg80211_chandef_identical(&chandef, &local->_oper_chandef))
b23b025f
BG		 120 local->hw.conf.flags |= IEEE80211_CONF_OFFCHANNEL;
121 else
122 local->hw.conf.flags &= ~IEEE80211_CONF_OFFCHANNEL;
123
ffd2778b 124 offchannel_flag ^= local->hw.conf.flags & IEEE80211_CONF_OFFCHANNEL;
f0706e82 125
675a0b04
KB		 126 if (offchannel_flag ||
127 !cfg80211_chandef_identical(&local->hw.conf.chandef,
128 &local->_oper_chandef)) {
129 local->hw.conf.chandef = chandef;
e8975581
JB		 130 changed |= IEEE80211_CONF_CHANGE_CHANNEL;
131 }
8318d78a 132
0f78231b
JB		 133 if (!conf_is_ht(&local->hw.conf)) {
134 /*
135 * mac80211.h documents that this is only valid
136 * when the channel is set to an HT type, and
137 * that otherwise STATIC is used.
138 */
139 local->hw.conf.smps_mode = IEEE80211_SMPS_STATIC;
140 } else if (local->hw.conf.smps_mode != local->smps_mode) {
141 local->hw.conf.smps_mode = local->smps_mode;
142 changed |= IEEE80211_CONF_CHANGE_SMPS;
143 }
144
0430c883 145 power = ieee80211_chandef_max_power(&chandef);
a8302de9 146
1ea6f9c0
JB		 147 rcu_read_lock();
148 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
149 if (!rcu_access_pointer(sdata->vif.chanctx_conf))
150 continue;
764152ff
FF		 151 if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
152 continue;
1ea6f9c0
JB		 153 power = min(power, sdata->vif.bss_conf.txpower);
154 }
155 rcu_read_unlock();
a8302de9 156
e8975581
JB		 157 if (local->hw.conf.power_level != power) {
158 changed |= IEEE80211_CONF_CHANGE_POWER;
159 local->hw.conf.power_level = power;
160 }
b2c258fb 161
55de908a
JB		 162 return changed;
163}
164
165int ieee80211_hw_config(struct ieee80211_local *local, u32 changed)
166{
167 int ret = 0;
168
169 might_sleep();
170
171 if (!local->use_chanctx)
172 changed |= ieee80211_hw_conf_chan(local);
173 else
174 changed &= ~(IEEE80211_CONF_CHANGE_CHANNEL |
175 IEEE80211_CONF_CHANGE_POWER);
176
e8975581 177 if (changed && local->open_count) {
24487981 178 ret = drv_config(local, changed);
d73782fd 179 /*
447107fb 180 * Goal:
d73782fd
JB		 181 * HW reconfiguration should never fail, the driver has told
182 * us what it can support so it should live up to that promise.
447107fb
RC		 183 *
184 * Current status:
185 * rfkill is not integrated with mac80211 and a
186 * configuration command can thus fail if hardware rfkill
187 * is enabled
188 *
189 * FIXME: integrate rfkill with mac80211 and then add this
190 * WARN_ON() back
191 *
d73782fd 192 */
447107fb 193 /* WARN_ON(ret); */
d73782fd 194 }
f0706e82 195
b2c258fb
JB		 196 return ret;
197}
f0706e82 198
471b3efd
JB		 199void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
200 u32 changed)
d9430a32 201{
471b3efd
JB		 202 struct ieee80211_local *local = sdata->local;
203
990baec0 204 if (!changed || sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
471b3efd
JB		 205 return;
206
12375ef9 207 drv_bss_info_changed(local, sdata, &sdata->vif.bss_conf, changed);
d9430a32
DD		 208}
209
f698d856 210u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata)
d9430a32 211{
bda3933a
JB		 212 sdata->vif.bss_conf.use_cts_prot = false;
213 sdata->vif.bss_conf.use_short_preamble = false;
214 sdata->vif.bss_conf.use_short_slot = false;
7a5158ef
JB		 215 return BSS_CHANGED_ERP_CTS_PROT |
216 BSS_CHANGED_ERP_PREAMBLE |
217 BSS_CHANGED_ERP_SLOT;
d9430a32
DD		 218}
219
f0706e82
JB		 220static void ieee80211_tasklet_handler(unsigned long data)
221{
222 struct ieee80211_local *local = (struct ieee80211_local *) data;
223 struct sk_buff *skb;
f0706e82
JB		 224
225 while ((skb = skb_dequeue(&local->skb_queue)) ||
226 (skb = skb_dequeue(&local->skb_queue_unreliable))) {
227 switch (skb->pkt_type) {
228 case IEEE80211_RX_MSG:
51fb61e7 229 /* Clear skb->pkt_type in order to not confuse kernel
f0706e82
JB		 230 * netstack. */
231 skb->pkt_type = 0;
005e472b 232 ieee80211_rx(&local->hw, skb);
f0706e82
JB		 233 break;
234 case IEEE80211_TX_STATUS_MSG:
f0706e82 235 skb->pkt_type = 0;
005e472b 236 ieee80211_tx_status(&local->hw, skb);
f0706e82 237 break;
f4ea83dd 238 default:
5e3f3089
LF		 239 WARN(1, "mac80211: Packet is of unknown type %d\n",
240 skb->pkt_type);
f0706e82
JB		 241 dev_kfree_skb(skb);
242 break;
243 }
244 }
245}
246
f2753ddb
JB		 247static void ieee80211_restart_work(struct work_struct *work)
248{
249 struct ieee80211_local *local =
250 container_of(work, struct ieee80211_local, restart_work);
251
bc86863d
SG		 252 /* wait for scan work complete */
253 flush_workqueue(local->workqueue);
254
d43c6b6e
DS		 255 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning),
256 "%s called with hardware scan in progress\n", __func__);
bc86863d 257
f2753ddb 258 rtnl_lock();
4136c422 259 ieee80211_scan_cancel(local);
f2753ddb
JB		 260 ieee80211_reconfig(local);
261 rtnl_unlock();
262}
263
264void ieee80211_restart_hw(struct ieee80211_hw *hw)
265{
266 struct ieee80211_local *local = hw_to_local(hw);
267
b5878a2d
JB		 268 trace_api_restart_hw(local);
269
b196d031
MB		 270 wiphy_info(hw->wiphy,
271 "Hardware restart was requested\n");
272
18145c69 273 /* use this reason, ieee80211_reconfig will unblock it */
445ea4e8
JB		 274 ieee80211_stop_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
275 IEEE80211_QUEUE_STOP_REASON_SUSPEND);
f2753ddb 276
04800ada
AN		 277 /*
278 * Stop all Rx during the reconfig. We don't want state changes
279 * or driver callbacks while this is in progress.
280 */
281 local->in_reconfig = true;
282 barrier();
283
f2753ddb
JB		 284 schedule_work(&local->restart_work);
285}
286EXPORT_SYMBOL(ieee80211_restart_hw);
287
26b36cfe 288#ifdef CONFIG_INET
2b2c009e
JO		 289static int ieee80211_ifa_changed(struct notifier_block *nb,
290 unsigned long data, void *arg)
291{
292 struct in_ifaddr *ifa = arg;
293 struct ieee80211_local *local =
294 container_of(nb, struct ieee80211_local,
295 ifa_notifier);
296 struct net_device *ndev = ifa->ifa_dev->dev;
297 struct wireless_dev *wdev = ndev->ieee80211_ptr;
68542962 298 struct in_device *idev;
2b2c009e 299 struct ieee80211_sub_if_data *sdata;
68542962 300 struct ieee80211_bss_conf *bss_conf;
2b2c009e 301 struct ieee80211_if_managed *ifmgd;
68542962 302 int c = 0;
2b2c009e
JO		 303
304 /* Make sure it's our interface that got changed */
305 if (!wdev)
306 return NOTIFY_DONE;
307
308 if (wdev->wiphy != local->hw.wiphy)
309 return NOTIFY_DONE;
310
2b2c009e 311 sdata = IEEE80211_DEV_TO_SUB_IF(ndev);
68542962 312 bss_conf = &sdata->vif.bss_conf;
2b2c009e
JO		 313
314 /* ARP filtering is only supported in managed mode */
315 if (sdata->vif.type != NL80211_IFTYPE_STATION)
316 return NOTIFY_DONE;
317
95ae6b22 318 idev = __in_dev_get_rtnl(sdata->dev);
68542962
JO		 319 if (!idev)
320 return NOTIFY_DONE;
321
2b2c009e 322 ifmgd = &sdata->u.mgd;
8d61ffa5 323 sdata_lock(sdata);
68542962
JO		 324
325 /* Copy the addresses to the bss_conf list */
326 ifa = idev->ifa_list;
0f19b41e
JB		 327 while (ifa) {
328 if (c < IEEE80211_BSS_ARP_ADDR_LIST_LEN)
329 bss_conf->arp_addr_list[c] = ifa->ifa_address;
68542962
JO		 330 ifa = ifa->ifa_next;
331 c++;
332 }
333
68542962
JO		 334 bss_conf->arp_addr_cnt = c;
335
53d69c39 336 /* Configure driver only if associated (which also implies it is up) */
0f19b41e 337 if (ifmgd->associated)
68542962
JO		 338 ieee80211_bss_info_change_notify(sdata,
339 BSS_CHANGED_ARP_FILTER);
68542962 340
8d61ffa5 341 sdata_unlock(sdata);
2b2c009e
JO		 342
343 return NOTIFY_DONE;
344}
26b36cfe 345#endif
2b2c009e 346
a65240c1
JB		 347#if IS_ENABLED(CONFIG_IPV6)
348static int ieee80211_ifa6_changed(struct notifier_block *nb,
349 unsigned long data, void *arg)
350{
351 struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)arg;
352 struct inet6_dev *idev = ifa->idev;
353 struct net_device *ndev = ifa->idev->dev;
354 struct ieee80211_local *local =
355 container_of(nb, struct ieee80211_local, ifa6_notifier);
356 struct wireless_dev *wdev = ndev->ieee80211_ptr;
357 struct ieee80211_sub_if_data *sdata;
358
359 /* Make sure it's our interface that got changed */
360 if (!wdev || wdev->wiphy != local->hw.wiphy)
361 return NOTIFY_DONE;
362
363 sdata = IEEE80211_DEV_TO_SUB_IF(ndev);
364
365 /*
366 * For now only support station mode. This is mostly because
367 * doing AP would have to handle AP_VLAN in some way ...
368 */
369 if (sdata->vif.type != NL80211_IFTYPE_STATION)
370 return NOTIFY_DONE;
371
372 drv_ipv6_addr_change(local, sdata, idev);
373
374 return NOTIFY_DONE;
375}
376#endif
377
2e161f78
JB		 378/* There isn't a lot of sense in it, but you can transmit anything you like */
379static const struct ieee80211_txrx_stypes
380ieee80211_default_mgmt_stypes[NUM_NL80211_IFTYPES] = {
381 [NL80211_IFTYPE_ADHOC] = {
382 .tx = 0xffff,
3bfda62c
WH		 383 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
384 BIT(IEEE80211_STYPE_AUTH >> 4) |
41e31b8b
AQ		 385 BIT(IEEE80211_STYPE_DEAUTH >> 4) |
386 BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
2e161f78
JB		 387 },
388 [NL80211_IFTYPE_STATION] = {
389 .tx = 0xffff,
390 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
391 BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
392 },
393 [NL80211_IFTYPE_AP] = {
394 .tx = 0xffff,
395 .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) |
396 BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) |
397 BIT(IEEE80211_STYPE_PROBE_REQ >> 4) |
398 BIT(IEEE80211_STYPE_DISASSOC >> 4) |
399 BIT(IEEE80211_STYPE_AUTH >> 4) |
400 BIT(IEEE80211_STYPE_DEAUTH >> 4) |
401 BIT(IEEE80211_STYPE_ACTION >> 4),
402 },
403 [NL80211_IFTYPE_AP_VLAN] = {
404 /* copy AP */
405 .tx = 0xffff,
406 .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) |
407 BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) |
408 BIT(IEEE80211_STYPE_PROBE_REQ >> 4) |
409 BIT(IEEE80211_STYPE_DISASSOC >> 4) |
410 BIT(IEEE80211_STYPE_AUTH >> 4) |
411 BIT(IEEE80211_STYPE_DEAUTH >> 4) |
2ca27bcf
JB		 412 BIT(IEEE80211_STYPE_ACTION >> 4),
413 },
414 [NL80211_IFTYPE_P2P_CLIENT] = {
415 .tx = 0xffff,
416 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
417 BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
418 },
419 [NL80211_IFTYPE_P2P_GO] = {
420 .tx = 0xffff,
421 .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) |
422 BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) |
423 BIT(IEEE80211_STYPE_PROBE_REQ >> 4) |
2e161f78
JB		 424 BIT(IEEE80211_STYPE_DISASSOC >> 4) |
425 BIT(IEEE80211_STYPE_AUTH >> 4) |
426 BIT(IEEE80211_STYPE_DEAUTH >> 4) |
427 BIT(IEEE80211_STYPE_ACTION >> 4),
428 },
c7108a71
JC		 429 [NL80211_IFTYPE_MESH_POINT] = {
430 .tx = 0xffff,
71839121
JC		 431 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
432 BIT(IEEE80211_STYPE_AUTH >> 4) |
433 BIT(IEEE80211_STYPE_DEAUTH >> 4),
c7108a71 434 },
f142c6b9
JB		 435 [NL80211_IFTYPE_P2P_DEVICE] = {
436 .tx = 0xffff,
437 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
438 BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
439 },
2e161f78
JB		 440};
441
ef96a842
BG		 442static const struct ieee80211_ht_cap mac80211_ht_capa_mod_mask = {
443 .ampdu_params_info = IEEE80211_HT_AMPDU_PARM_FACTOR |
444 IEEE80211_HT_AMPDU_PARM_DENSITY,
445
446 .cap_info = cpu_to_le16(IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
447 IEEE80211_HT_CAP_MAX_AMSDU |
bc0784d9 448 IEEE80211_HT_CAP_SGI_20 |
ef96a842
BG		 449 IEEE80211_HT_CAP_SGI_40),
450 .mcs = {
451 .rx_mask = { 0xff, 0xff, 0xff, 0xff, 0xff,
452 0xff, 0xff, 0xff, 0xff, 0xff, },
453 },
454};
455
dd5ecfea
JB		 456static const struct ieee80211_vht_cap mac80211_vht_capa_mod_mask = {
457 .vht_cap_info =
458 cpu_to_le32(IEEE80211_VHT_CAP_RXLDPC |
459 IEEE80211_VHT_CAP_SHORT_GI_80 |
460 IEEE80211_VHT_CAP_SHORT_GI_160 |
461 IEEE80211_VHT_CAP_RXSTBC_1 |
462 IEEE80211_VHT_CAP_RXSTBC_2 |
463 IEEE80211_VHT_CAP_RXSTBC_3 |
464 IEEE80211_VHT_CAP_RXSTBC_4 |
465 IEEE80211_VHT_CAP_TXSTBC |
466 IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE |
467 IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE |
468 IEEE80211_VHT_CAP_TX_ANTENNA_PATTERN |
469 IEEE80211_VHT_CAP_RX_ANTENNA_PATTERN |
470 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK),
471 .supp_mcs = {
472 .rx_mcs_map = cpu_to_le16(~0),
473 .tx_mcs_map = cpu_to_le16(~0),
474 },
475};
476
c6f9d6c3
JB		 477static const u8 extended_capabilities[] = {
478 0, 0, 0, 0, 0, 0, 0,
479 WLAN_EXT_CAPA8_OPMODE_NOTIF,
480};
481
f0706e82
JB		 482struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len,
483 const struct ieee80211_ops *ops)
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
JB		 522
523 wiphy = wiphy_new(&mac80211_config_ops, priv_size);
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
c6f9d6c3
JB		 538 wiphy->extended_capabilities = extended_capabilities;
539 wiphy->extended_capabilities_mask = extended_capabilities;
540 wiphy->extended_capabilities_len = ARRAY_SIZE(extended_capabilities);
541
81ddbb5c
JB		 542 if (ops->remain_on_channel)
543 wiphy->flags |= WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL;
207aba60 544
b292219f
JB		 545 wiphy->features |= NL80211_FEATURE_SK_TX_STATUS |
546 NL80211_FEATURE_SAE |
1ea6f9c0 547 NL80211_FEATURE_HT_IBSS |
a6dad6a2
TP		 548 NL80211_FEATURE_VIF_TXPOWER |
549 NL80211_FEATURE_USERSPACE_MPM;
a729cff8 550
cd2bb512 551 if (!ops->hw_scan)
5c95b940
AQ		 552 wiphy->features |= NL80211_FEATURE_LOW_PRIORITY_SCAN |
553 NL80211_FEATURE_AP_SCAN;
554
cd2bb512 555
207aba60
JB		 556 if (!ops->set_key)
557 wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
18a83659 558
0c1ad2ca 559 wiphy->bss_priv_size = sizeof(struct ieee80211_bss);
f0706e82
JB		 560
561 local = wiphy_priv(wiphy);
de95a54b 562
f0706e82
JB		 563 local->hw.wiphy = wiphy;
564
1ce8e7b5 565 local->hw.priv = (char *)local + ALIGN(sizeof(*local), NETDEV_ALIGN);
f0706e82
JB		 566
567 local->ops = ops;
fe57d9f5 568 local->use_chanctx = use_chanctx;
f0706e82 569
e6a9854b
JB		 570 /* set up some defaults */
571 local->hw.queues = 1;
572 local->hw.max_rates = 1;
78be49ec 573 local->hw.max_report_rates = 0;
df6ba5d8 574 local->hw.max_rx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF;
39e68712 575 local->hw.max_tx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF;
3a25a8c8 576 local->hw.offchannel_tx_hw_queue = IEEE80211_INVAL_HW_QUEUE;
b9a5f8ca
JM		 577 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
578 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
ac55d2fe
JB		 579 local->hw.radiotap_mcs_details = IEEE80211_RADIOTAP_MCS_HAVE_MCS |
580 IEEE80211_RADIOTAP_MCS_HAVE_GI |
581 IEEE80211_RADIOTAP_MCS_HAVE_BW;
51648921
JB		 582 local->hw.radiotap_vht_details = IEEE80211_RADIOTAP_VHT_KNOWN_GI |
583 IEEE80211_RADIOTAP_VHT_KNOWN_BANDWIDTH;
219c3867
AB		 584 local->hw.uapsd_queues = IEEE80211_DEFAULT_UAPSD_QUEUES;
585 local->hw.uapsd_max_sp_len = IEEE80211_DEFAULT_MAX_SP_LEN;
1ea6f9c0 586 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
ef96a842 587 wiphy->ht_capa_mod_mask = &mac80211_ht_capa_mod_mask;
dd5ecfea 588 wiphy->vht_capa_mod_mask = &mac80211_vht_capa_mod_mask;
f0706e82 589
79010420 590 INIT_LIST_HEAD(&local->interfaces);
2f787b0b
YH		 591
592 __hw_addr_init(&local->mc_list);
593
c771c9d8 594 mutex_init(&local->iflist_mtx);
a1699b75 595 mutex_init(&local->mtx);
f0706e82 596
ad0e2b5a 597 mutex_init(&local->key_mtx);
3b8d81e0 598 spin_lock_init(&local->filter_lock);
f9e124fb 599 spin_lock_init(&local->rx_path_lock);
ce7c9111
KV		 600 spin_lock_init(&local->queue_stop_reason_lock);
601
d01a1e65
MK		 602 INIT_LIST_HEAD(&local->chanctx_list);
603 mutex_init(&local->chanctx_mtx);
604
c2b13452 605 INIT_DELAYED_WORK(&local->scan_work, ieee80211_scan_work);
f0706e82 606
f2753ddb
JB		 607 INIT_WORK(&local->restart_work, ieee80211_restart_work);
608
164eb02d
SW		 609 INIT_WORK(&local->radar_detected_work,
610 ieee80211_dfs_radar_detected_work);
611
3ac64bee 612 INIT_WORK(&local->reconfig_filter, ieee80211_reconfig_filter);
0f78231b 613 local->smps_mode = IEEE80211_SMPS_OFF;
3ac64bee 614
520eb820
KV		 615 INIT_WORK(&local->dynamic_ps_enable_work,
616 ieee80211_dynamic_ps_enable_work);
617 INIT_WORK(&local->dynamic_ps_disable_work,
618 ieee80211_dynamic_ps_disable_work);
619 setup_timer(&local->dynamic_ps_timer,
620 ieee80211_dynamic_ps_timer, (unsigned long) local);
621
85a9994a
LC		 622 INIT_WORK(&local->sched_scan_stopped_work,
623 ieee80211_sched_scan_stopped_work);
624
a729cff8
JB		 625 spin_lock_init(&local->ack_status_lock);
626 idr_init(&local->ack_status_frames);
a729cff8 627
f0706e82
JB		 628 sta_info_init(local);
629
a6a67db2 630 for (i = 0; i < IEEE80211_MAX_QUEUES; i++) {
2a577d98 631 skb_queue_head_init(&local->pending[i]);
a6a67db2
JB		 632 atomic_set(&local->agg_queue_stop[i], 0);
633 }
f0706e82
JB		 634 tasklet_init(&local->tx_pending_tasklet, ieee80211_tx_pending,
635 (unsigned long)local);
f0706e82
JB		 636
637 tasklet_init(&local->tasklet,
638 ieee80211_tasklet_handler,
639 (unsigned long) local);
f0706e82
JB		 640
641 skb_queue_head_init(&local->skb_queue);
642 skb_queue_head_init(&local->skb_queue_unreliable);
643
fe67c913
JB		 644 ieee80211_led_names(local);
645
2eb278e0 646 ieee80211_roc_setup(local);
21f83589 647
005e472b 648 return &local->hw;
f0706e82
JB		 649}
650EXPORT_SYMBOL(ieee80211_alloc_hw);
651
2475b1cc 652static int ieee80211_init_cipher_suites(struct ieee80211_local *local)
f0706e82 653{
2475b1cc
MS		 654 bool have_wep = !(IS_ERR(local->wep_tx_tfm) ||
655 IS_ERR(local->wep_rx_tfm));
656 bool have_mfp = local->hw.flags & IEEE80211_HW_MFP_CAPABLE;
657 const struct ieee80211_cipher_scheme *cs = local->hw.cipher_schemes;
658 int n_suites = 0, r = 0, w = 0;
659 u32 *suites;
25e47c18 660 static const u32 cipher_suites[] = {
5daa8a8e 661 /* keep WEP first, it may be removed below */
25e47c18
JB		 662 WLAN_CIPHER_SUITE_WEP40,
663 WLAN_CIPHER_SUITE_WEP104,
664 WLAN_CIPHER_SUITE_TKIP,
665 WLAN_CIPHER_SUITE_CCMP,
666
667 /* keep last -- depends on hw flags! */
668 WLAN_CIPHER_SUITE_AES_CMAC
669 };
8318d78a 670
2475b1cc
MS		 671 /* Driver specifies the ciphers, we have nothing to do... */
672 if (local->hw.wiphy->cipher_suites && have_wep)
673 return 0;
674
675 /* Set up cipher suites if driver relies on mac80211 cipher defs */
676 if (!local->hw.wiphy->cipher_suites && !cs) {
677 local->hw.wiphy->cipher_suites = cipher_suites;
678 local->hw.wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
679
680 if (!have_mfp)
681 local->hw.wiphy->n_cipher_suites--;
682
683 if (!have_wep) {
684 local->hw.wiphy->cipher_suites += 2;
685 local->hw.wiphy->n_cipher_suites -= 2;
686 }
687
688 return 0;
689 }
690
691 if (!local->hw.wiphy->cipher_suites) {
692 /*
693 * Driver specifies cipher schemes only
694 * We start counting ciphers defined by schemes, TKIP and CCMP
695 */
696 n_suites = local->hw.n_cipher_schemes + 2;
697
698 /* check if we have WEP40 and WEP104 */
699 if (have_wep)
700 n_suites += 2;
701
702 /* check if we have AES_CMAC */
703 if (have_mfp)
704 n_suites++;
705
706 suites = kmalloc(sizeof(u32) * n_suites, GFP_KERNEL);
707 if (!suites)
708 return -ENOMEM;
709
710 suites[w++] = WLAN_CIPHER_SUITE_CCMP;
711 suites[w++] = WLAN_CIPHER_SUITE_TKIP;
712
713 if (have_wep) {
714 suites[w++] = WLAN_CIPHER_SUITE_WEP40;
715 suites[w++] = WLAN_CIPHER_SUITE_WEP104;
716 }
717
718 if (have_mfp)
719 suites[w++] = WLAN_CIPHER_SUITE_AES_CMAC;
720
721 for (r = 0; r < local->hw.n_cipher_schemes; r++)
722 suites[w++] = cs[r].cipher;
723 } else {
724 /* Driver provides cipher suites, but we need to exclude WEP */
725 suites = kmemdup(local->hw.wiphy->cipher_suites,
726 sizeof(u32) * local->hw.wiphy->n_cipher_suites,
727 GFP_KERNEL);
728 if (!suites)
729 return -ENOMEM;
730
731 for (r = 0; r < local->hw.wiphy->n_cipher_suites; r++) {
732 u32 suite = local->hw.wiphy->cipher_suites[r];
733
734 if (suite == WLAN_CIPHER_SUITE_WEP40 ||
735 suite == WLAN_CIPHER_SUITE_WEP104)
736 continue;
737 suites[w++] = suite;
738 }
739 }
740
741 local->hw.wiphy->cipher_suites = suites;
742 local->hw.wiphy->n_cipher_suites = w;
743 local->wiphy_ciphers_allocated = true;
744
745 return 0;
746}
747
748int ieee80211_register_hw(struct ieee80211_hw *hw)
749{
750 struct ieee80211_local *local = hw_to_local(hw);
751 int result, i;
752 enum ieee80211_band band;
753 int channels, max_bitrates;
754 bool supp_ht, supp_vht;
755 netdev_features_t feature_whitelist;
756 struct cfg80211_chan_def dflt_chandef = {};
757
3a25a8c8
JB		 758 if (hw->flags & IEEE80211_HW_QUEUE_CONTROL &&
759 (local->hw.offchannel_tx_hw_queue == IEEE80211_INVAL_HW_QUEUE ||
760 local->hw.offchannel_tx_hw_queue >= local->hw.queues))
761 return -EINVAL;
762
38bb3e9d 763#ifdef CONFIG_PM
964dc9e2 764 if (hw->wiphy->wowlan && (!local->ops->suspend || !local->ops->resume))
eecc4800 765 return -EINVAL;
dfb89c56 766#endif
eecc4800 767
fe57d9f5
JB		 768 if (!local->use_chanctx) {
769 for (i = 0; i < local->hw.wiphy->n_iface_combinations; i++) {
770 const struct ieee80211_iface_combination *comb;
771
772 comb = &local->hw.wiphy->iface_combinations[i];
773
774 if (comb->num_different_channels > 1)
775 return -EINVAL;
776 }
746a3365 777 } else {
fe57d9f5
JB		 778 /*
779 * WDS is currently prohibited when channel contexts are used
780 * because there's no clear definition of which channel WDS
781 * type interfaces use
782 */
783 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_WDS))
784 return -EINVAL;
164eb02d
SW		 785
786 /* DFS currently not supported with channel context drivers */
787 for (i = 0; i < local->hw.wiphy->n_iface_combinations; i++) {
788 const struct ieee80211_iface_combination *comb;
789
790 comb = &local->hw.wiphy->iface_combinations[i];
791
792 if (comb->radar_detect_widths)
793 return -EINVAL;
794 }
fe57d9f5
JB		 795 }
796
72d78728
AN		 797 /* Only HW csum features are currently compatible with mac80211 */
798 feature_whitelist = NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
799 NETIF_F_HW_CSUM;
800 if (WARN_ON(hw->netdev_features & ~feature_whitelist))
801 return -EINVAL;
802
78be49ec
HS		 803 if (hw->max_report_rates == 0)
804 hw->max_report_rates = hw->max_rates;
805
04ecd257
JB		 806 local->rx_chains = 1;
807
8318d78a
JB		 808 /*
809 * generic code guarantees at least one band,
810 * set this very early because much code assumes
811 * that hw.conf.channel is assigned
812 */
2a519311 813 channels = 0;
de95a54b 814 max_bitrates = 0;
5ef2d41a 815 supp_ht = false;
ba0afa2f 816 supp_vht = false;
8318d78a
JB		 817 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
818 struct ieee80211_supported_band *sband;
819
820 sband = local->hw.wiphy->bands[band];
de95a54b
JB		 821 if (!sband)
822 continue;
fffa4b1c
KB		 823
824 if (!dflt_chandef.chan) {
825 cfg80211_chandef_create(&dflt_chandef,
826 &sband->channels[0],
827 NL80211_CHAN_NO_HT);
8318d78a 828 /* init channel we're on */
fffa4b1c
KB		 829 if (!local->use_chanctx && !local->_oper_chandef.chan) {
830 local->hw.conf.chandef = dflt_chandef;
831 local->_oper_chandef = dflt_chandef;
832 }
833 local->monitor_chandef = dflt_chandef;
8318d78a 834 }
fffa4b1c 835
de95a54b
JB		 836 channels += sband->n_channels;
837
838 if (max_bitrates < sband->n_bitrates)
839 max_bitrates = sband->n_bitrates;
5ef2d41a 840 supp_ht = supp_ht || sband->ht_cap.ht_supported;
ba0afa2f 841 supp_vht = supp_vht || sband->vht_cap.vht_supported;
04ecd257
JB		 842
843 if (sband->ht_cap.ht_supported)
844 local->rx_chains =
845 max(ieee80211_mcs_to_chains(&sband->ht_cap.mcs),
846 local->rx_chains);
847
848 /* TODO: consider VHT for RX chains, hopefully it's the same */
8318d78a 849 }
f0706e82 850
f59ac048 851 /* if low-level driver supports AP, we also support VLAN */
7527a782
JB		 852 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) {
853 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP_VLAN);
854 hw->wiphy->software_iftypes |= BIT(NL80211_IFTYPE_AP_VLAN);
855 }
f59ac048
LR		 856
857 /* mac80211 always supports monitor */
7527a782
JB		 858 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR);
859 hw->wiphy->software_iftypes |= BIT(NL80211_IFTYPE_MONITOR);
860
55de908a 861 /* mac80211 doesn't support more than one IBSS interface right now */
8e621fc9
JB		 862 for (i = 0; i < hw->wiphy->n_iface_combinations; i++) {
863 const struct ieee80211_iface_combination *c;
864 int j;
865
866 c = &hw->wiphy->iface_combinations[i];
867
8e621fc9
JB		 868 for (j = 0; j < c->n_limits; j++)
869 if ((c->limits[j].types & BIT(NL80211_IFTYPE_ADHOC)) &&
870 c->limits[j].max > 1)
871 return -EINVAL;
872 }
873
5b0ec94f
JB		 874 local->int_scan_req = kzalloc(sizeof(*local->int_scan_req) +
875 sizeof(void *) * channels, GFP_KERNEL);
876 if (!local->int_scan_req)
877 return -ENOMEM;
878
879 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
880 if (!local->hw.wiphy->bands[band])
881 continue;
882 local->int_scan_req->rates[band] = (u32) -1;
883 }
884
5eb5a52d
JB		 885#ifndef CONFIG_MAC80211_MESH
886 /* mesh depends on Kconfig, but drivers should set it if they want */
887 local->hw.wiphy->interface_modes &= ~BIT(NL80211_IFTYPE_MESH_POINT);
888#endif
889
1570ca59
JC		 890 /* if the underlying driver supports mesh, mac80211 will (at least)
891 * provide routing of mesh authentication frames to userspace */
892 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_MESH_POINT))
893 local->hw.wiphy->flags |= WIPHY_FLAG_MESH_AUTH;
894
a621fa4d
JB		 895 /* mac80211 supports control port protocol changing */
896 local->hw.wiphy->flags |= WIPHY_FLAG_CONTROL_PORT_PROTOCOL;
897
52512072 898 if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM) {
77965c97 899 local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
52512072 900 } else if (local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC) {
77965c97 901 local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC;
52512072 902 if (hw->max_signal <= 0) {
903 result = -EINVAL;
904 goto fail_wiphy_register;
905 }
906 }
77965c97 907
ab13315a
KV		 908 WARN((local->hw.flags & IEEE80211_HW_SUPPORTS_UAPSD)
909 && (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK),
910 "U-APSD not supported with HW_PS_NULLFUNC_STACK\n");
911
de95a54b
JB		 912 /*
913 * Calculate scan IE length -- we need this to alloc
914 * memory and to subtract from the driver limit. It
dc9f48ce 915 * includes the DS Params, (extended) supported rates, and HT
de95a54b
JB		 916 * information -- SSID is the driver's responsibility.
917 */
dc9f48ce
JM		 918 local->scan_ies_len = 4 + max_bitrates /* (ext) supp rates */ +
919 3 /* DS Params */;
5ef2d41a
JB		 920 if (supp_ht)
921 local->scan_ies_len += 2 + sizeof(struct ieee80211_ht_cap);
de95a54b 922
d0e6c21a 923 if (supp_vht)
ba0afa2f 924 local->scan_ies_len +=
d4950281 925 2 + sizeof(struct ieee80211_vht_cap);
ba0afa2f 926
de95a54b
JB		 927 if (!local->ops->hw_scan) {
928 /* For hw_scan, driver needs to set these up. */
929 local->hw.wiphy->max_scan_ssids = 4;
930 local->hw.wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
931 }
932
933 /*
934 * If the driver supports any scan IEs, then assume the
935 * limit includes the IEs mac80211 will add, otherwise
936 * leave it at zero and let the driver sort it out; we
937 * still pass our IEs to the driver but userspace will
938 * not be allowed to in that case.
939 */
940 if (local->hw.wiphy->max_scan_ie_len)
941 local->hw.wiphy->max_scan_ie_len -= local->scan_ies_len;
942
2475b1cc
MS		 943 WARN_ON(!ieee80211_cs_list_valid(local->hw.cipher_schemes,
944 local->hw.n_cipher_schemes));
945
946 result = ieee80211_init_cipher_suites(local);
947 if (result < 0)
948 goto fail_wiphy_register;
25e47c18 949
21f83589
JB		 950 if (!local->ops->remain_on_channel)
951 local->hw.wiphy->max_remain_on_channel_duration = 5000;
a293911d 952
dfe018bf
AN		 953 /* mac80211 based drivers don't support internal TDLS setup */
954 if (local->hw.wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS)
955 local->hw.wiphy->flags |= WIPHY_FLAG_TDLS_EXTERNAL_SETUP;
956
f0706e82
JB		 957 result = wiphy_register(local->hw.wiphy);
958 if (result < 0)
2a519311 959 goto fail_wiphy_register;
f0706e82 960
e2530083
JB		 961 /*
962 * We use the number of queues for feature tests (QoS, HT) internally
963 * so restrict them appropriately.
964 */
e2530083
JB		 965 if (hw->queues > IEEE80211_MAX_QUEUES)
966 hw->queues = IEEE80211_MAX_QUEUES;
e2530083 967
42935eca 968 local->workqueue =
d8537548 969 alloc_ordered_workqueue("%s", 0, wiphy_name(local->hw.wiphy));
42935eca 970 if (!local->workqueue) {
f0706e82
JB		 971 result = -ENOMEM;
972 goto fail_workqueue;
973 }
974
b306f453
JB		 975 /*
976 * The hardware needs headroom for sending the frame,
977 * and we need some headroom for passing the frame to monitor
978 * interfaces, but never both at the same time.
979 */
33ccad35 980 local->tx_headroom = max_t(unsigned int , local->hw.extra_tx_headroom,
a2fe8166 981 IEEE80211_TX_STATUS_HEADROOM);
b306f453 982
e9f207f0
JB		 983 debugfs_hw_add(local);
984
b446918b
HS		 985 /*
986 * if the driver doesn't specify a max listen interval we
987 * use 5 which should be a safe default
988 */
ea95bba4 989 if (local->hw.max_listen_interval == 0)
b446918b 990 local->hw.max_listen_interval = 5;
ea95bba4
TW		 991
992 local->hw.conf.listen_interval = local->hw.max_listen_interval;
993
ff616381 994 local->dynamic_ps_forced_timeout = -1;
195e294d 995
d4c4a9a1 996 result = ieee80211_wep_init(local);
3473187d 997 if (result < 0)
0fb9a9ec
JP		 998 wiphy_debug(local->hw.wiphy, "Failed to initialize wep: %d\n",
999 result);
d4c4a9a1 1000
24d47300
KB		 1001 local->hw.conf.flags = IEEE80211_CONF_IDLE;
1002
b57e6b56
MSS		 1003 ieee80211_led_init(local);
1004
f0706e82 1005 rtnl_lock();
f0706e82 1006
830f9038
JB		 1007 result = ieee80211_init_rate_ctrl_alg(local,
1008 hw->rate_control_algorithm);
f0706e82 1009 if (result < 0) {
0fb9a9ec
JP		 1010 wiphy_debug(local->hw.wiphy,
1011 "Failed to initialize rate control algorithm\n");
f0706e82
JB		 1012 goto fail_rate;
1013 }
1014
8dffff21
JB		 1015 /* add one default STA interface if supported */
1016 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_STATION)) {
1017 result = ieee80211_if_add(local, "wlan%d", NULL,
1018 NL80211_IFTYPE_STATION, NULL);
1019 if (result)
0fb9a9ec
JP		 1020 wiphy_warn(local->hw.wiphy,
1021 "Failed to add default virtual iface\n");
8dffff21 1022 }
f0706e82 1023
f0706e82
JB		 1024 rtnl_unlock();
1025
10f644a4
JB		 1026 local->network_latency_notifier.notifier_call =
1027 ieee80211_max_network_latency;
1028 result = pm_qos_add_notifier(PM_QOS_NETWORK_LATENCY,
1029 &local->network_latency_notifier);
10f644a4
JB		 1030 if (result) {
1031 rtnl_lock();
1032 goto fail_pm_qos;
1033 }
1034
26b36cfe 1035#ifdef CONFIG_INET
2b2c009e
JO		 1036 local->ifa_notifier.notifier_call = ieee80211_ifa_changed;
1037 result = register_inetaddr_notifier(&local->ifa_notifier);
1038 if (result)
1039 goto fail_ifa;
26b36cfe 1040#endif
2b2c009e 1041
a65240c1
JB		 1042#if IS_ENABLED(CONFIG_IPV6)
1043 local->ifa6_notifier.notifier_call = ieee80211_ifa6_changed;
1044 result = register_inet6addr_notifier(&local->ifa6_notifier);
1045 if (result)
1046 goto fail_ifa6;
1047#endif
1048
f0706e82
JB		 1049 return 0;
1050
a65240c1
JB		 1051#if IS_ENABLED(CONFIG_IPV6)
1052 fail_ifa6:
93c08c32 1053#ifdef CONFIG_INET
a65240c1
JB		 1054 unregister_inetaddr_notifier(&local->ifa_notifier);
1055#endif
1056#endif
1057#if defined(CONFIG_INET) || defined(CONFIG_IPV6)
2b2c009e
JO		 1058 fail_ifa:
1059 pm_qos_remove_notifier(PM_QOS_NETWORK_LATENCY,
1060 &local->network_latency_notifier);
1061 rtnl_lock();
93c08c32 1062#endif
10f644a4
JB		 1063 fail_pm_qos:
1064 ieee80211_led_exit(local);
1065 ieee80211_remove_interfaces(local);
10f644a4 1066 fail_rate:
f0706e82 1067 rtnl_unlock();
d4c4a9a1 1068 ieee80211_wep_free(local);
f0706e82 1069 sta_info_stop(local);
42935eca 1070 destroy_workqueue(local->workqueue);
10f644a4 1071 fail_workqueue:
f0706e82 1072 wiphy_unregister(local->hw.wiphy);
10f644a4 1073 fail_wiphy_register:
3ffc2a90
JB		 1074 if (local->wiphy_ciphers_allocated)
1075 kfree(local->hw.wiphy->cipher_suites);
11ba964d 1076 kfree(local->int_scan_req);
f0706e82
JB		 1077 return result;
1078}
1079EXPORT_SYMBOL(ieee80211_register_hw);
1080
06d181a8
JB		 1081void ieee80211_napi_add(struct ieee80211_hw *hw, struct napi_struct *napi,
1082 struct net_device *napi_dev,
1083 int (*poll)(struct napi_struct *, int),
1084 int weight)
1085{
1086 struct ieee80211_local *local = hw_to_local(hw);
1087
1088 netif_napi_add(napi_dev, napi, poll, weight);
1089 local->napi = napi;
1090}
1091EXPORT_SYMBOL_GPL(ieee80211_napi_add);
1092
f0706e82
JB		 1093void ieee80211_unregister_hw(struct ieee80211_hw *hw)
1094{
1095 struct ieee80211_local *local = hw_to_local(hw);
f0706e82
JB		 1096
1097 tasklet_kill(&local->tx_pending_tasklet);
1098 tasklet_kill(&local->tasklet);
1099
10f644a4
JB		 1100 pm_qos_remove_notifier(PM_QOS_NETWORK_LATENCY,
1101 &local->network_latency_notifier);
26b36cfe 1102#ifdef CONFIG_INET
2b2c009e 1103 unregister_inetaddr_notifier(&local->ifa_notifier);
26b36cfe 1104#endif
a65240c1
JB		 1105#if IS_ENABLED(CONFIG_IPV6)
1106 unregister_inet6addr_notifier(&local->ifa6_notifier);
1107#endif
10f644a4 1108
f0706e82
JB		 1109 rtnl_lock();
1110
79010420
JB		 1111 /*
1112 * At this point, interface list manipulations are fine
1113 * because the driver cannot be handing us frames any
1114 * more and the tasklet is killed.
1115 */
75636525 1116 ieee80211_remove_interfaces(local);
5b2812e9 1117
f0706e82
JB		 1118 rtnl_unlock();
1119
258086a4 1120 cancel_work_sync(&local->restart_work);
3ac64bee 1121 cancel_work_sync(&local->reconfig_filter);
18db594a 1122 flush_work(&local->sched_scan_stopped_work);
3ac64bee 1123
f0706e82 1124 ieee80211_clear_tx_pending(local);
f0706e82
JB		 1125 rate_control_deinitialize(local);
1126
f64f9e71
JP		 1127 if (skb_queue_len(&local->skb_queue) ||
1128 skb_queue_len(&local->skb_queue_unreliable))
0fb9a9ec 1129 wiphy_warn(local->hw.wiphy, "skb_queue not empty\n");
f0706e82
JB		 1130 skb_queue_purge(&local->skb_queue);
1131 skb_queue_purge(&local->skb_queue_unreliable);
1132
42935eca 1133 destroy_workqueue(local->workqueue);
f0706e82 1134 wiphy_unregister(local->hw.wiphy);
ecb44335 1135 sta_info_stop(local);
f0706e82
JB		 1136 ieee80211_wep_free(local);
1137 ieee80211_led_exit(local);
5ba63533 1138 kfree(local->int_scan_req);
f0706e82
JB		 1139}
1140EXPORT_SYMBOL(ieee80211_unregister_hw);
1141
a729cff8
JB		 1142static int ieee80211_free_ack_frame(int id, void *p, void *data)
1143{
1144 WARN_ONCE(1, "Have pending ack frames!\n");
1145 kfree_skb(p);
1146 return 0;
1147}
1148
f0706e82
JB		 1149void ieee80211_free_hw(struct ieee80211_hw *hw)
1150{
1151 struct ieee80211_local *local = hw_to_local(hw);
1152
c771c9d8 1153 mutex_destroy(&local->iflist_mtx);
a1699b75 1154 mutex_destroy(&local->mtx);
c771c9d8 1155
3ffc2a90
JB		 1156 if (local->wiphy_ciphers_allocated)
1157 kfree(local->hw.wiphy->cipher_suites);
1158
a729cff8
JB		 1159 idr_for_each(&local->ack_status_frames,
1160 ieee80211_free_ack_frame, NULL);
1161 idr_destroy(&local->ack_status_frames);
1162
ad38bfc9
MG		 1163 kfree(rcu_access_pointer(local->tx_latency));
1164
f0706e82
JB		 1165 wiphy_free(local->hw.wiphy);
1166}
1167EXPORT_SYMBOL(ieee80211_free_hw);
1168
f0706e82
JB		 1169static int __init ieee80211_init(void)
1170{
1171 struct sk_buff *skb;
1172 int ret;
1173
e039fa4a
JB		 1174 BUILD_BUG_ON(sizeof(struct ieee80211_tx_info) > sizeof(skb->cb));
1175 BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, driver_data) +
c6a1fa12 1176 IEEE80211_TX_INFO_DRIVER_DATA_SIZE > sizeof(skb->cb));
f0706e82 1177
cccf129f
FF		 1178 ret = rc80211_minstrel_init();
1179 if (ret)
1180 return ret;
1181
ec8aa669
FF		 1182 ret = rc80211_minstrel_ht_init();
1183 if (ret)
1184 goto err_minstrel;
1185
4b475898 1186 ret = rc80211_pid_init();
ad018375 1187 if (ret)
47846c9b 1188 goto err_pid;
f0706e82 1189
47846c9b
JB		 1190 ret = ieee80211_iface_init();
1191 if (ret)
1192 goto err_netdev;
e9f207f0 1193
f0706e82 1194 return 0;
47846c9b
JB		 1195 err_netdev:
1196 rc80211_pid_exit();
1197 err_pid:
ec8aa669
FF		 1198 rc80211_minstrel_ht_exit();
1199 err_minstrel:
47846c9b
JB		 1200 rc80211_minstrel_exit();
1201
1202 return ret;
f0706e82
JB		 1203}
1204
f0706e82
JB		 1205static void __exit ieee80211_exit(void)
1206{
4b475898 1207 rc80211_pid_exit();
ec8aa669 1208 rc80211_minstrel_ht_exit();
cccf129f 1209 rc80211_minstrel_exit();
ac71c691 1210
bf7cd94d 1211 ieee80211s_stop();
902acc78 1212
47846c9b 1213 ieee80211_iface_exit();
d07c7cf4
JB		 1214
1215 rcu_barrier();
f0706e82
JB		 1216}
1217
1218
ca9938fe 1219subsys_initcall(ieee80211_init);
f0706e82
JB		 1220module_exit(ieee80211_exit);
1221
1222MODULE_DESCRIPTION("IEEE 802.11 subsystem");
1223MODULE_LICENSE("GPL");
Linux kernel - Deliverables
This page took 0.855208 seconds and 5 git commands to generate.