?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
x86/topology: Update the 'cpu cores' field in /proc/cpuinfo correctly across CPU...
[cris-mirror.git] / net / mac80211 / main.c
blob0785d04a80bcfe74763d69e6579196e671898612
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 * Copyright 2013-2014 Intel Mobile Communications GmbH
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>
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>
21 #include <linux/rtnetlink.h>
22 #include <linux/bitmap.h>
23 #include <linux/inetdevice.h>
24 #include <net/net_namespace.h>
25 #include <net/cfg80211.h>
26 #include <net/addrconf.h>
27
28 #include "ieee80211_i.h"
29 #include "driver-ops.h"
30 #include "rate.h"
31 #include "mesh.h"
32 #include "wep.h"
33 #include "led.h"
34 #include "debugfs.h"
35
36 void ieee80211_configure_filter(struct ieee80211_local *local)
37 {
38 u64 mc;
39 unsigned int changed_flags;
40 unsigned int new_flags = 0;
41
42 if (atomic_read(&local->iff_allmultis))
43 new_flags |= FIF_ALLMULTI;
44
45 if (local->monitors || test_bit(SCAN_SW_SCANNING, &local->scanning) ||
46 test_bit(SCAN_ONCHANNEL_SCANNING, &local->scanning))
47 new_flags |= FIF_BCN_PRBRESP_PROMISC;
48
49 if (local->fif_probe_req || local->probe_req_reg)
50 new_flags |= FIF_PROBE_REQ;
51
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;
63
64 if (local->fif_pspoll)
65 new_flags |= FIF_PSPOLL;
66
67 spin_lock_bh(&local->filter_lock);
68 changed_flags = local->filter_flags ^ new_flags;
69
70 mc = drv_prepare_multicast(local, &local->mc_list);
71 spin_unlock_bh(&local->filter_lock);
72
73 /* be a bit nasty */
74 new_flags |= (1<<31);
75
76 drv_configure_filter(local, changed_flags, &new_flags, mc);
77
78 WARN_ON(new_flags & (1<<31));
79
80 local->filter_flags = new_flags & ~(1<<31);
81 }
82
83 static 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
91 static u32 ieee80211_hw_conf_chan(struct ieee80211_local *local)
92 {
93 struct ieee80211_sub_if_data *sdata;
94 struct cfg80211_chan_def chandef = {};
95 u32 changed = 0;
96 int power;
97 u32 offchannel_flag;
98
99 offchannel_flag = local->hw.conf.flags & IEEE80211_CONF_OFFCHANNEL;
100
101 if (local->scan_chandef.chan) {
102 chandef = local->scan_chandef;
103 } else if (local->tmp_channel) {
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))
116 local->hw.conf.flags |= IEEE80211_CONF_OFFCHANNEL;
117 else
118 local->hw.conf.flags &= ~IEEE80211_CONF_OFFCHANNEL;
119
120 offchannel_flag ^= local->hw.conf.flags & IEEE80211_CONF_OFFCHANNEL;
121
122 if (offchannel_flag ||
123 !cfg80211_chandef_identical(&local->hw.conf.chandef,
124 &local->_oper_chandef)) {
125 local->hw.conf.chandef = chandef;
126 changed |= IEEE80211_CONF_CHANGE_CHANNEL;
127 }
128
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
141 power = ieee80211_chandef_max_power(&chandef);
142
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;
147 if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
148 continue;
149 power = min(power, sdata->vif.bss_conf.txpower);
150 }
151 rcu_read_unlock();
152
153 if (local->hw.conf.power_level != power) {
154 changed |= IEEE80211_CONF_CHANGE_POWER;
155 local->hw.conf.power_level = power;
156 }
157
158 return changed;
159 }
160
161 int 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
173 if (changed && local->open_count) {
174 ret = drv_config(local, changed);
175 /*
176 * Goal:
177 * HW reconfiguration should never fail, the driver has told
178 * us what it can support so it should live up to that promise.
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 *
188 */
189 /* WARN_ON(ret); */
190 }
191
192 return ret;
193 }
194
195 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
196 u32 changed)
197 {
198 struct ieee80211_local *local = sdata->local;
199
200 if (!changed || sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
201 return;
202
203 drv_bss_info_changed(local, sdata, &sdata->vif.bss_conf, changed);
204 }
205
206 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata)
207 {
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;
211 return BSS_CHANGED_ERP_CTS_PROT |
212 BSS_CHANGED_ERP_PREAMBLE |
213 BSS_CHANGED_ERP_SLOT;
214 }
215
216 static void ieee80211_tasklet_handler(unsigned long data)
217 {
218 struct ieee80211_local *local = (struct ieee80211_local *) data;
219 struct sk_buff *skb;
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:
225 /* Clear skb->pkt_type in order to not confuse kernel
226 * netstack. */
227 skb->pkt_type = 0;
228 ieee80211_rx(&local->hw, skb);
229 break;
230 case IEEE80211_TX_STATUS_MSG:
231 skb->pkt_type = 0;
232 ieee80211_tx_status(&local->hw, skb);
233 break;
234 default:
235 WARN(1, "mac80211: Packet is of unknown type %d\n",
236 skb->pkt_type);
237 dev_kfree_skb(skb);
238 break;
239 }
240 }
241 }
242
243 static void ieee80211_restart_work(struct work_struct *work)
244 {
245 struct ieee80211_local *local =
246 container_of(work, struct ieee80211_local, restart_work);
247 struct ieee80211_sub_if_data *sdata;
248
249 /* wait for scan work complete */
250 flush_workqueue(local->workqueue);
251 flush_work(&local->sched_scan_stopped_work);
252
253 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning),
254 "%s called with hardware scan in progress\n", __func__);
255
256 flush_work(&local->radar_detected_work);
257 rtnl_lock();
258 list_for_each_entry(sdata, &local->interfaces, list)
259 flush_delayed_work(&sdata->dec_tailroom_needed_wk);
260 ieee80211_scan_cancel(local);
261
262 /* make sure any new ROC will consider local->in_reconfig */
263 flush_delayed_work(&local->roc_work);
264 flush_work(&local->hw_roc_done);
265
266 /* wait for all packet processing to be done */
267 synchronize_net();
268
269 ieee80211_reconfig(local);
270 rtnl_unlock();
271 }
272
273 void ieee80211_restart_hw(struct ieee80211_hw *hw)
274 {
275 struct ieee80211_local *local = hw_to_local(hw);
276
277 trace_api_restart_hw(local);
278
279 wiphy_info(hw->wiphy,
280 "Hardware restart was requested\n");
281
282 /* use this reason, ieee80211_reconfig will unblock it */
283 ieee80211_stop_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
284 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
285 false);
286
287 /*
288 * Stop all Rx during the reconfig. We don't want state changes
289 * or driver callbacks while this is in progress.
290 */
291 local->in_reconfig = true;
292 barrier();
293
294 queue_work(system_freezable_wq, &local->restart_work);
295 }
296 EXPORT_SYMBOL(ieee80211_restart_hw);
297
298 #ifdef CONFIG_INET
299 static int ieee80211_ifa_changed(struct notifier_block *nb,
300 unsigned long data, void *arg)
301 {
302 struct in_ifaddr *ifa = arg;
303 struct ieee80211_local *local =
304 container_of(nb, struct ieee80211_local,
305 ifa_notifier);
306 struct net_device *ndev = ifa->ifa_dev->dev;
307 struct wireless_dev *wdev = ndev->ieee80211_ptr;
308 struct in_device *idev;
309 struct ieee80211_sub_if_data *sdata;
310 struct ieee80211_bss_conf *bss_conf;
311 struct ieee80211_if_managed *ifmgd;
312 int c = 0;
313
314 /* Make sure it's our interface that got changed */
315 if (!wdev)
316 return NOTIFY_DONE;
317
318 if (wdev->wiphy != local->hw.wiphy)
319 return NOTIFY_DONE;
320
321 sdata = IEEE80211_DEV_TO_SUB_IF(ndev);
322 bss_conf = &sdata->vif.bss_conf;
323
324 /* ARP filtering is only supported in managed mode */
325 if (sdata->vif.type != NL80211_IFTYPE_STATION)
326 return NOTIFY_DONE;
327
328 idev = __in_dev_get_rtnl(sdata->dev);
329 if (!idev)
330 return NOTIFY_DONE;
331
332 ifmgd = &sdata->u.mgd;
333 sdata_lock(sdata);
334
335 /* Copy the addresses to the bss_conf list */
336 ifa = idev->ifa_list;
337 while (ifa) {
338 if (c < IEEE80211_BSS_ARP_ADDR_LIST_LEN)
339 bss_conf->arp_addr_list[c] = ifa->ifa_address;
340 ifa = ifa->ifa_next;
341 c++;
342 }
343
344 bss_conf->arp_addr_cnt = c;
345
346 /* Configure driver only if associated (which also implies it is up) */
347 if (ifmgd->associated)
348 ieee80211_bss_info_change_notify(sdata,
349 BSS_CHANGED_ARP_FILTER);
350
351 sdata_unlock(sdata);
352
353 return NOTIFY_OK;
354 }
355 #endif
356
357 #if IS_ENABLED(CONFIG_IPV6)
358 static int ieee80211_ifa6_changed(struct notifier_block *nb,
359 unsigned long data, void *arg)
360 {
361 struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)arg;
362 struct inet6_dev *idev = ifa->idev;
363 struct net_device *ndev = ifa->idev->dev;
364 struct ieee80211_local *local =
365 container_of(nb, struct ieee80211_local, ifa6_notifier);
366 struct wireless_dev *wdev = ndev->ieee80211_ptr;
367 struct ieee80211_sub_if_data *sdata;
368
369 /* Make sure it's our interface that got changed */
370 if (!wdev || wdev->wiphy != local->hw.wiphy)
371 return NOTIFY_DONE;
372
373 sdata = IEEE80211_DEV_TO_SUB_IF(ndev);
374
375 /*
376 * For now only support station mode. This is mostly because
377 * doing AP would have to handle AP_VLAN in some way ...
378 */
379 if (sdata->vif.type != NL80211_IFTYPE_STATION)
380 return NOTIFY_DONE;
381
382 drv_ipv6_addr_change(local, sdata, idev);
383
384 return NOTIFY_OK;
385 }
386 #endif
387
388 /* There isn't a lot of sense in it, but you can transmit anything you like */
389 static const struct ieee80211_txrx_stypes
390 ieee80211_default_mgmt_stypes[NUM_NL80211_IFTYPES] = {
391 [NL80211_IFTYPE_ADHOC] = {
392 .tx = 0xffff,
393 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
394 BIT(IEEE80211_STYPE_AUTH >> 4) |
395 BIT(IEEE80211_STYPE_DEAUTH >> 4) |
396 BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
397 },
398 [NL80211_IFTYPE_STATION] = {
399 .tx = 0xffff,
400 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
401 BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
402 },
403 [NL80211_IFTYPE_AP] = {
404 .tx = 0xffff,
405 .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) |
406 BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) |
407 BIT(IEEE80211_STYPE_PROBE_REQ >> 4) |
408 BIT(IEEE80211_STYPE_DISASSOC >> 4) |
409 BIT(IEEE80211_STYPE_AUTH >> 4) |
410 BIT(IEEE80211_STYPE_DEAUTH >> 4) |
411 BIT(IEEE80211_STYPE_ACTION >> 4),
412 },
413 [NL80211_IFTYPE_AP_VLAN] = {
414 /* copy AP */
415 .tx = 0xffff,
416 .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) |
417 BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) |
418 BIT(IEEE80211_STYPE_PROBE_REQ >> 4) |
419 BIT(IEEE80211_STYPE_DISASSOC >> 4) |
420 BIT(IEEE80211_STYPE_AUTH >> 4) |
421 BIT(IEEE80211_STYPE_DEAUTH >> 4) |
422 BIT(IEEE80211_STYPE_ACTION >> 4),
423 },
424 [NL80211_IFTYPE_P2P_CLIENT] = {
425 .tx = 0xffff,
426 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
427 BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
428 },
429 [NL80211_IFTYPE_P2P_GO] = {
430 .tx = 0xffff,
431 .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) |
432 BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) |
433 BIT(IEEE80211_STYPE_PROBE_REQ >> 4) |
434 BIT(IEEE80211_STYPE_DISASSOC >> 4) |
435 BIT(IEEE80211_STYPE_AUTH >> 4) |
436 BIT(IEEE80211_STYPE_DEAUTH >> 4) |
437 BIT(IEEE80211_STYPE_ACTION >> 4),
438 },
439 [NL80211_IFTYPE_MESH_POINT] = {
440 .tx = 0xffff,
441 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
442 BIT(IEEE80211_STYPE_AUTH >> 4) |
443 BIT(IEEE80211_STYPE_DEAUTH >> 4),
444 },
445 [NL80211_IFTYPE_P2P_DEVICE] = {
446 .tx = 0xffff,
447 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
448 BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
449 },
450 };
451
452 static const struct ieee80211_ht_cap mac80211_ht_capa_mod_mask = {
453 .ampdu_params_info = IEEE80211_HT_AMPDU_PARM_FACTOR |
454 IEEE80211_HT_AMPDU_PARM_DENSITY,
455
456 .cap_info = cpu_to_le16(IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
457 IEEE80211_HT_CAP_MAX_AMSDU |
458 IEEE80211_HT_CAP_SGI_20 |
459 IEEE80211_HT_CAP_SGI_40 |
460 IEEE80211_HT_CAP_LDPC_CODING |
461 IEEE80211_HT_CAP_40MHZ_INTOLERANT),
462 .mcs = {
463 .rx_mask = { 0xff, 0xff, 0xff, 0xff, 0xff,
464 0xff, 0xff, 0xff, 0xff, 0xff, },
465 },
466 };
467
468 static const struct ieee80211_vht_cap mac80211_vht_capa_mod_mask = {
469 .vht_cap_info =
470 cpu_to_le32(IEEE80211_VHT_CAP_RXLDPC |
471 IEEE80211_VHT_CAP_SHORT_GI_80 |
472 IEEE80211_VHT_CAP_SHORT_GI_160 |
473 IEEE80211_VHT_CAP_RXSTBC_1 |
474 IEEE80211_VHT_CAP_RXSTBC_2 |
475 IEEE80211_VHT_CAP_RXSTBC_3 |
476 IEEE80211_VHT_CAP_RXSTBC_4 |
477 IEEE80211_VHT_CAP_TXSTBC |
478 IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE |
479 IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE |
480 IEEE80211_VHT_CAP_TX_ANTENNA_PATTERN |
481 IEEE80211_VHT_CAP_RX_ANTENNA_PATTERN |
482 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK),
483 .supp_mcs = {
484 .rx_mcs_map = cpu_to_le16(~0),
485 .tx_mcs_map = cpu_to_le16(~0),
486 },
487 };
488
489 struct ieee80211_hw *ieee80211_alloc_hw_nm(size_t priv_data_len,
490 const struct ieee80211_ops *ops,
491 const char *requested_name)
492 {
493 struct ieee80211_local *local;
494 int priv_size, i;
495 struct wiphy *wiphy;
496 bool use_chanctx;
497
498 if (WARN_ON(!ops->tx || !ops->start || !ops->stop || !ops->config ||
499 !ops->add_interface || !ops->remove_interface ||
500 !ops->configure_filter))
501 return NULL;
502
503 if (WARN_ON(ops->sta_state && (ops->sta_add || ops->sta_remove)))
504 return NULL;
505
506 /* check all or no channel context operations exist */
507 i = !!ops->add_chanctx + !!ops->remove_chanctx +
508 !!ops->change_chanctx + !!ops->assign_vif_chanctx +
509 !!ops->unassign_vif_chanctx;
510 if (WARN_ON(i != 0 && i != 5))
511 return NULL;
512 use_chanctx = i == 5;
513
514 /* Ensure 32-byte alignment of our private data and hw private data.
515 * We use the wiphy priv data for both our ieee80211_local and for
516 * the driver's private data
517 *
518 * In memory it'll be like this:
519 *
520 * +-------------------------+
521 * | struct wiphy |
522 * +-------------------------+
523 * | struct ieee80211_local |
524 * +-------------------------+
525 * | driver's private data |
526 * +-------------------------+
527 *
528 */
529 priv_size = ALIGN(sizeof(*local), NETDEV_ALIGN) + priv_data_len;
530
531 wiphy = wiphy_new_nm(&mac80211_config_ops, priv_size, requested_name);
532
533 if (!wiphy)
534 return NULL;
535
536 wiphy->mgmt_stypes = ieee80211_default_mgmt_stypes;
537
538 wiphy->privid = mac80211_wiphy_privid;
539
540 wiphy->flags |= WIPHY_FLAG_NETNS_OK |
541 WIPHY_FLAG_4ADDR_AP |
542 WIPHY_FLAG_4ADDR_STATION |
543 WIPHY_FLAG_REPORTS_OBSS |
544 WIPHY_FLAG_OFFCHAN_TX;
545
546 if (ops->remain_on_channel)
547 wiphy->flags |= WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL;
548
549 wiphy->features |= NL80211_FEATURE_SK_TX_STATUS |
550 NL80211_FEATURE_SAE |
551 NL80211_FEATURE_HT_IBSS |
552 NL80211_FEATURE_VIF_TXPOWER |
553 NL80211_FEATURE_MAC_ON_CREATE |
554 NL80211_FEATURE_USERSPACE_MPM |
555 NL80211_FEATURE_FULL_AP_CLIENT_STATE;
556 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_FILS_STA);
557
558 if (!ops->hw_scan)
559 wiphy->features |= NL80211_FEATURE_LOW_PRIORITY_SCAN |
560 NL80211_FEATURE_AP_SCAN;
561
562
563 if (!ops->set_key)
564 wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
565
566 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_RRM);
567
568 wiphy->bss_priv_size = sizeof(struct ieee80211_bss);
569
570 local = wiphy_priv(wiphy);
571
572 if (sta_info_init(local))
573 goto err_free;
574
575 local->hw.wiphy = wiphy;
576
577 local->hw.priv = (char *)local + ALIGN(sizeof(*local), NETDEV_ALIGN);
578
579 local->ops = ops;
580 local->use_chanctx = use_chanctx;
581
582 /* set up some defaults */
583 local->hw.queues = 1;
584 local->hw.max_rates = 1;
585 local->hw.max_report_rates = 0;
586 local->hw.max_rx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF;
587 local->hw.max_tx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF;
588 local->hw.offchannel_tx_hw_queue = IEEE80211_INVAL_HW_QUEUE;
589 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
590 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
591 local->hw.radiotap_mcs_details = IEEE80211_RADIOTAP_MCS_HAVE_MCS |
592 IEEE80211_RADIOTAP_MCS_HAVE_GI |
593 IEEE80211_RADIOTAP_MCS_HAVE_BW;
594 local->hw.radiotap_vht_details = IEEE80211_RADIOTAP_VHT_KNOWN_GI |
595 IEEE80211_RADIOTAP_VHT_KNOWN_BANDWIDTH;
596 local->hw.uapsd_queues = IEEE80211_DEFAULT_UAPSD_QUEUES;
597 local->hw.uapsd_max_sp_len = IEEE80211_DEFAULT_MAX_SP_LEN;
598 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
599 wiphy->ht_capa_mod_mask = &mac80211_ht_capa_mod_mask;
600 wiphy->vht_capa_mod_mask = &mac80211_vht_capa_mod_mask;
601
602 local->ext_capa[7] = WLAN_EXT_CAPA8_OPMODE_NOTIF;
603
604 wiphy->extended_capabilities = local->ext_capa;
605 wiphy->extended_capabilities_mask = local->ext_capa;
606 wiphy->extended_capabilities_len =
607 ARRAY_SIZE(local->ext_capa);
608
609 INIT_LIST_HEAD(&local->interfaces);
610 INIT_LIST_HEAD(&local->mon_list);
611
612 __hw_addr_init(&local->mc_list);
613
614 mutex_init(&local->iflist_mtx);
615 mutex_init(&local->mtx);
616
617 mutex_init(&local->key_mtx);
618 spin_lock_init(&local->filter_lock);
619 spin_lock_init(&local->rx_path_lock);
620 spin_lock_init(&local->queue_stop_reason_lock);
621
622 INIT_LIST_HEAD(&local->chanctx_list);
623 mutex_init(&local->chanctx_mtx);
624
625 INIT_DELAYED_WORK(&local->scan_work, ieee80211_scan_work);
626
627 INIT_WORK(&local->restart_work, ieee80211_restart_work);
628
629 INIT_WORK(&local->radar_detected_work,
630 ieee80211_dfs_radar_detected_work);
631
632 INIT_WORK(&local->reconfig_filter, ieee80211_reconfig_filter);
633 local->smps_mode = IEEE80211_SMPS_OFF;
634
635 INIT_WORK(&local->dynamic_ps_enable_work,
636 ieee80211_dynamic_ps_enable_work);
637 INIT_WORK(&local->dynamic_ps_disable_work,
638 ieee80211_dynamic_ps_disable_work);
639 timer_setup(&local->dynamic_ps_timer, ieee80211_dynamic_ps_timer, 0);
640
641 INIT_WORK(&local->sched_scan_stopped_work,
642 ieee80211_sched_scan_stopped_work);
643
644 INIT_WORK(&local->tdls_chsw_work, ieee80211_tdls_chsw_work);
645
646 spin_lock_init(&local->ack_status_lock);
647 idr_init(&local->ack_status_frames);
648
649 for (i = 0; i < IEEE80211_MAX_QUEUES; i++) {
650 skb_queue_head_init(&local->pending[i]);
651 atomic_set(&local->agg_queue_stop[i], 0);
652 }
653 tasklet_init(&local->tx_pending_tasklet, ieee80211_tx_pending,
654 (unsigned long)local);
655
656 tasklet_init(&local->tasklet,
657 ieee80211_tasklet_handler,
658 (unsigned long) local);
659
660 skb_queue_head_init(&local->skb_queue);
661 skb_queue_head_init(&local->skb_queue_unreliable);
662 skb_queue_head_init(&local->skb_queue_tdls_chsw);
663
664 ieee80211_alloc_led_names(local);
665
666 ieee80211_roc_setup(local);
667
668 local->hw.radiotap_timestamp.units_pos = -1;
669 local->hw.radiotap_timestamp.accuracy = -1;
670
671 return &local->hw;
672 err_free:
673 wiphy_free(wiphy);
674 return NULL;
675 }
676 EXPORT_SYMBOL(ieee80211_alloc_hw_nm);
677
678 static int ieee80211_init_cipher_suites(struct ieee80211_local *local)
679 {
680 bool have_wep = !(IS_ERR(local->wep_tx_tfm) ||
681 IS_ERR(local->wep_rx_tfm));
682 bool have_mfp = ieee80211_hw_check(&local->hw, MFP_CAPABLE);
683 int n_suites = 0, r = 0, w = 0;
684 u32 *suites;
685 static const u32 cipher_suites[] = {
686 /* keep WEP first, it may be removed below */
687 WLAN_CIPHER_SUITE_WEP40,
688 WLAN_CIPHER_SUITE_WEP104,
689 WLAN_CIPHER_SUITE_TKIP,
690 WLAN_CIPHER_SUITE_CCMP,
691 WLAN_CIPHER_SUITE_CCMP_256,
692 WLAN_CIPHER_SUITE_GCMP,
693 WLAN_CIPHER_SUITE_GCMP_256,
694
695 /* keep last -- depends on hw flags! */
696 WLAN_CIPHER_SUITE_AES_CMAC,
697 WLAN_CIPHER_SUITE_BIP_CMAC_256,
698 WLAN_CIPHER_SUITE_BIP_GMAC_128,
699 WLAN_CIPHER_SUITE_BIP_GMAC_256,
700 };
701
702 if (ieee80211_hw_check(&local->hw, SW_CRYPTO_CONTROL) ||
703 local->hw.wiphy->cipher_suites) {
704 /* If the driver advertises, or doesn't support SW crypto,
705 * we only need to remove WEP if necessary.
706 */
707 if (have_wep)
708 return 0;
709
710 /* well if it has _no_ ciphers ... fine */
711 if (!local->hw.wiphy->n_cipher_suites)
712 return 0;
713
714 /* Driver provides cipher suites, but we need to exclude WEP */
715 suites = kmemdup(local->hw.wiphy->cipher_suites,
716 sizeof(u32) * local->hw.wiphy->n_cipher_suites,
717 GFP_KERNEL);
718 if (!suites)
719 return -ENOMEM;
720
721 for (r = 0; r < local->hw.wiphy->n_cipher_suites; r++) {
722 u32 suite = local->hw.wiphy->cipher_suites[r];
723
724 if (suite == WLAN_CIPHER_SUITE_WEP40 ||
725 suite == WLAN_CIPHER_SUITE_WEP104)
726 continue;
727 suites[w++] = suite;
728 }
729 } else if (!local->hw.cipher_schemes) {
730 /* If the driver doesn't have cipher schemes, there's nothing
731 * else to do other than assign the (software supported and
732 * perhaps offloaded) cipher suites.
733 */
734 local->hw.wiphy->cipher_suites = cipher_suites;
735 local->hw.wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
736
737 if (!have_mfp)
738 local->hw.wiphy->n_cipher_suites -= 4;
739
740 if (!have_wep) {
741 local->hw.wiphy->cipher_suites += 2;
742 local->hw.wiphy->n_cipher_suites -= 2;
743 }
744
745 /* not dynamically allocated, so just return */
746 return 0;
747 } else {
748 const struct ieee80211_cipher_scheme *cs;
749
750 cs = local->hw.cipher_schemes;
751
752 /* Driver specifies cipher schemes only (but not cipher suites
753 * including the schemes)
754 *
755 * We start counting ciphers defined by schemes, TKIP, CCMP,
756 * CCMP-256, GCMP, and GCMP-256
757 */
758 n_suites = local->hw.n_cipher_schemes + 5;
759
760 /* check if we have WEP40 and WEP104 */
761 if (have_wep)
762 n_suites += 2;
763
764 /* check if we have AES_CMAC, BIP-CMAC-256, BIP-GMAC-128,
765 * BIP-GMAC-256
766 */
767 if (have_mfp)
768 n_suites += 4;
769
770 suites = kmalloc(sizeof(u32) * n_suites, GFP_KERNEL);
771 if (!suites)
772 return -ENOMEM;
773
774 suites[w++] = WLAN_CIPHER_SUITE_CCMP;
775 suites[w++] = WLAN_CIPHER_SUITE_CCMP_256;
776 suites[w++] = WLAN_CIPHER_SUITE_TKIP;
777 suites[w++] = WLAN_CIPHER_SUITE_GCMP;
778 suites[w++] = WLAN_CIPHER_SUITE_GCMP_256;
779
780 if (have_wep) {
781 suites[w++] = WLAN_CIPHER_SUITE_WEP40;
782 suites[w++] = WLAN_CIPHER_SUITE_WEP104;
783 }
784
785 if (have_mfp) {
786 suites[w++] = WLAN_CIPHER_SUITE_AES_CMAC;
787 suites[w++] = WLAN_CIPHER_SUITE_BIP_CMAC_256;
788 suites[w++] = WLAN_CIPHER_SUITE_BIP_GMAC_128;
789 suites[w++] = WLAN_CIPHER_SUITE_BIP_GMAC_256;
790 }
791
792 for (r = 0; r < local->hw.n_cipher_schemes; r++) {
793 suites[w++] = cs[r].cipher;
794 if (WARN_ON(cs[r].pn_len > IEEE80211_MAX_PN_LEN)) {
795 kfree(suites);
796 return -EINVAL;
797 }
798 }
799 }
800
801 local->hw.wiphy->cipher_suites = suites;
802 local->hw.wiphy->n_cipher_suites = w;
803 local->wiphy_ciphers_allocated = true;
804
805 return 0;
806 }
807
808 int ieee80211_register_hw(struct ieee80211_hw *hw)
809 {
810 struct ieee80211_local *local = hw_to_local(hw);
811 int result, i;
812 enum nl80211_band band;
813 int channels, max_bitrates;
814 bool supp_ht, supp_vht;
815 netdev_features_t feature_whitelist;
816 struct cfg80211_chan_def dflt_chandef = {};
817
818 if (ieee80211_hw_check(hw, QUEUE_CONTROL) &&
819 (local->hw.offchannel_tx_hw_queue == IEEE80211_INVAL_HW_QUEUE ||
820 local->hw.offchannel_tx_hw_queue >= local->hw.queues))
821 return -EINVAL;
822
823 if ((hw->wiphy->features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH) &&
824 (!local->ops->tdls_channel_switch ||
825 !local->ops->tdls_cancel_channel_switch ||
826 !local->ops->tdls_recv_channel_switch))
827 return -EOPNOTSUPP;
828
829 if (WARN_ON(ieee80211_hw_check(hw, SUPPORTS_TX_FRAG) &&
830 !local->ops->set_frag_threshold))
831 return -EINVAL;
832
833 if (WARN_ON(local->hw.wiphy->interface_modes &
834 BIT(NL80211_IFTYPE_NAN) &&
835 (!local->ops->start_nan || !local->ops->stop_nan)))
836 return -EINVAL;
837
838 #ifdef CONFIG_PM
839 if (hw->wiphy->wowlan && (!local->ops->suspend || !local->ops->resume))
840 return -EINVAL;
841 #endif
842
843 if (!local->use_chanctx) {
844 for (i = 0; i < local->hw.wiphy->n_iface_combinations; i++) {
845 const struct ieee80211_iface_combination *comb;
846
847 comb = &local->hw.wiphy->iface_combinations[i];
848
849 if (comb->num_different_channels > 1)
850 return -EINVAL;
851 }
852 } else {
853 /*
854 * WDS is currently prohibited when channel contexts are used
855 * because there's no clear definition of which channel WDS
856 * type interfaces use
857 */
858 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_WDS))
859 return -EINVAL;
860
861 /* DFS is not supported with multi-channel combinations yet */
862 for (i = 0; i < local->hw.wiphy->n_iface_combinations; i++) {
863 const struct ieee80211_iface_combination *comb;
864
865 comb = &local->hw.wiphy->iface_combinations[i];
866
867 if (comb->radar_detect_widths &&
868 comb->num_different_channels > 1)
869 return -EINVAL;
870 }
871 }
872
873 /* Only HW csum features are currently compatible with mac80211 */
874 feature_whitelist = NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
875 NETIF_F_HW_CSUM | NETIF_F_SG | NETIF_F_HIGHDMA |
876 NETIF_F_GSO_SOFTWARE | NETIF_F_RXCSUM;
877 if (WARN_ON(hw->netdev_features & ~feature_whitelist))
878 return -EINVAL;
879
880 if (hw->max_report_rates == 0)
881 hw->max_report_rates = hw->max_rates;
882
883 local->rx_chains = 1;
884
885 /*
886 * generic code guarantees at least one band,
887 * set this very early because much code assumes
888 * that hw.conf.channel is assigned
889 */
890 channels = 0;
891 max_bitrates = 0;
892 supp_ht = false;
893 supp_vht = false;
894 for (band = 0; band < NUM_NL80211_BANDS; band++) {
895 struct ieee80211_supported_band *sband;
896
897 sband = local->hw.wiphy->bands[band];
898 if (!sband)
899 continue;
900
901 if (!dflt_chandef.chan) {
902 cfg80211_chandef_create(&dflt_chandef,
903 &sband->channels[0],
904 NL80211_CHAN_NO_HT);
905 /* init channel we're on */
906 if (!local->use_chanctx && !local->_oper_chandef.chan) {
907 local->hw.conf.chandef = dflt_chandef;
908 local->_oper_chandef = dflt_chandef;
909 }
910 local->monitor_chandef = dflt_chandef;
911 }
912
913 channels += sband->n_channels;
914
915 if (max_bitrates < sband->n_bitrates)
916 max_bitrates = sband->n_bitrates;
917 supp_ht = supp_ht || sband->ht_cap.ht_supported;
918 supp_vht = supp_vht || sband->vht_cap.vht_supported;
919
920 if (!sband->ht_cap.ht_supported)
921 continue;
922
923 /* TODO: consider VHT for RX chains, hopefully it's the same */
924 local->rx_chains =
925 max(ieee80211_mcs_to_chains(&sband->ht_cap.mcs),
926 local->rx_chains);
927
928 /* no need to mask, SM_PS_DISABLED has all bits set */
929 sband->ht_cap.cap |= WLAN_HT_CAP_SM_PS_DISABLED <<
930 IEEE80211_HT_CAP_SM_PS_SHIFT;
931 }
932
933 /* if low-level driver supports AP, we also support VLAN */
934 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) {
935 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP_VLAN);
936 hw->wiphy->software_iftypes |= BIT(NL80211_IFTYPE_AP_VLAN);
937 }
938
939 /* mac80211 always supports monitor */
940 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR);
941 hw->wiphy->software_iftypes |= BIT(NL80211_IFTYPE_MONITOR);
942
943 /* mac80211 doesn't support more than one IBSS interface right now */
944 for (i = 0; i < hw->wiphy->n_iface_combinations; i++) {
945 const struct ieee80211_iface_combination *c;
946 int j;
947
948 c = &hw->wiphy->iface_combinations[i];
949
950 for (j = 0; j < c->n_limits; j++)
951 if ((c->limits[j].types & BIT(NL80211_IFTYPE_ADHOC)) &&
952 c->limits[j].max > 1)
953 return -EINVAL;
954 }
955
956 local->int_scan_req = kzalloc(sizeof(*local->int_scan_req) +
957 sizeof(void *) * channels, GFP_KERNEL);
958 if (!local->int_scan_req)
959 return -ENOMEM;
960
961 for (band = 0; band < NUM_NL80211_BANDS; band++) {
962 if (!local->hw.wiphy->bands[band])
963 continue;
964 local->int_scan_req->rates[band] = (u32) -1;
965 }
966
967 #ifndef CONFIG_MAC80211_MESH
968 /* mesh depends on Kconfig, but drivers should set it if they want */
969 local->hw.wiphy->interface_modes &= ~BIT(NL80211_IFTYPE_MESH_POINT);
970 #endif
971
972 /* if the underlying driver supports mesh, mac80211 will (at least)
973 * provide routing of mesh authentication frames to userspace */
974 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_MESH_POINT))
975 local->hw.wiphy->flags |= WIPHY_FLAG_MESH_AUTH;
976
977 /* mac80211 supports control port protocol changing */
978 local->hw.wiphy->flags |= WIPHY_FLAG_CONTROL_PORT_PROTOCOL;
979
980 if (ieee80211_hw_check(&local->hw, SIGNAL_DBM)) {
981 local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
982 } else if (ieee80211_hw_check(&local->hw, SIGNAL_UNSPEC)) {
983 local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC;
984 if (hw->max_signal <= 0) {
985 result = -EINVAL;
986 goto fail_wiphy_register;
987 }
988 }
989
990 /*
991 * Calculate scan IE length -- we need this to alloc
992 * memory and to subtract from the driver limit. It
993 * includes the DS Params, (extended) supported rates, and HT
994 * information -- SSID is the driver's responsibility.
995 */
996 local->scan_ies_len = 4 + max_bitrates /* (ext) supp rates */ +
997 3 /* DS Params */;
998 if (supp_ht)
999 local->scan_ies_len += 2 + sizeof(struct ieee80211_ht_cap);
1000
1001 if (supp_vht)
1002 local->scan_ies_len +=
1003 2 + sizeof(struct ieee80211_vht_cap);
1004
1005 if (!local->ops->hw_scan) {
1006 /* For hw_scan, driver needs to set these up. */
1007 local->hw.wiphy->max_scan_ssids = 4;
1008 local->hw.wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
1009 }
1010
1011 /*
1012 * If the driver supports any scan IEs, then assume the
1013 * limit includes the IEs mac80211 will add, otherwise
1014 * leave it at zero and let the driver sort it out; we
1015 * still pass our IEs to the driver but userspace will
1016 * not be allowed to in that case.
1017 */
1018 if (local->hw.wiphy->max_scan_ie_len)
1019 local->hw.wiphy->max_scan_ie_len -= local->scan_ies_len;
1020
1021 WARN_ON(!ieee80211_cs_list_valid(local->hw.cipher_schemes,
1022 local->hw.n_cipher_schemes));
1023
1024 result = ieee80211_init_cipher_suites(local);
1025 if (result < 0)
1026 goto fail_wiphy_register;
1027
1028 if (!local->ops->remain_on_channel)
1029 local->hw.wiphy->max_remain_on_channel_duration = 5000;
1030
1031 /* mac80211 based drivers don't support internal TDLS setup */
1032 if (local->hw.wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS)
1033 local->hw.wiphy->flags |= WIPHY_FLAG_TDLS_EXTERNAL_SETUP;
1034
1035 /* mac80211 supports eCSA, if the driver supports STA CSA at all */
1036 if (ieee80211_hw_check(&local->hw, CHANCTX_STA_CSA))
1037 local->ext_capa[0] |= WLAN_EXT_CAPA1_EXT_CHANNEL_SWITCHING;
1038
1039 local->hw.wiphy->max_num_csa_counters = IEEE80211_MAX_CSA_COUNTERS_NUM;
1040
1041 result = wiphy_register(local->hw.wiphy);
1042 if (result < 0)
1043 goto fail_wiphy_register;
1044
1045 /*
1046 * We use the number of queues for feature tests (QoS, HT) internally
1047 * so restrict them appropriately.
1048 */
1049 if (hw->queues > IEEE80211_MAX_QUEUES)
1050 hw->queues = IEEE80211_MAX_QUEUES;
1051
1052 local->workqueue =
1053 alloc_ordered_workqueue("%s", 0, wiphy_name(local->hw.wiphy));
1054 if (!local->workqueue) {
1055 result = -ENOMEM;
1056 goto fail_workqueue;
1057 }
1058
1059 /*
1060 * The hardware needs headroom for sending the frame,
1061 * and we need some headroom for passing the frame to monitor
1062 * interfaces, but never both at the same time.
1063 */
1064 local->tx_headroom = max_t(unsigned int , local->hw.extra_tx_headroom,
1065 IEEE80211_TX_STATUS_HEADROOM);
1066
1067 debugfs_hw_add(local);
1068
1069 /*
1070 * if the driver doesn't specify a max listen interval we
1071 * use 5 which should be a safe default
1072 */
1073 if (local->hw.max_listen_interval == 0)
1074 local->hw.max_listen_interval = 5;
1075
1076 local->hw.conf.listen_interval = local->hw.max_listen_interval;
1077
1078 local->dynamic_ps_forced_timeout = -1;
1079
1080 if (!local->hw.max_nan_de_entries)
1081 local->hw.max_nan_de_entries = IEEE80211_MAX_NAN_INSTANCE_ID;
1082
1083 result = ieee80211_wep_init(local);
1084 if (result < 0)
1085 wiphy_debug(local->hw.wiphy, "Failed to initialize wep: %d\n",
1086 result);
1087
1088 local->hw.conf.flags = IEEE80211_CONF_IDLE;
1089
1090 ieee80211_led_init(local);
1091
1092 rtnl_lock();
1093
1094 result = ieee80211_init_rate_ctrl_alg(local,
1095 hw->rate_control_algorithm);
1096 if (result < 0) {
1097 wiphy_debug(local->hw.wiphy,
1098 "Failed to initialize rate control algorithm\n");
1099 goto fail_rate;
1100 }
1101
1102 /* add one default STA interface if supported */
1103 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_STATION) &&
1104 !ieee80211_hw_check(hw, NO_AUTO_VIF)) {
1105 result = ieee80211_if_add(local, "wlan%d", NET_NAME_ENUM, NULL,
1106 NL80211_IFTYPE_STATION, NULL);
1107 if (result)
1108 wiphy_warn(local->hw.wiphy,
1109 "Failed to add default virtual iface\n");
1110 }
1111
1112 rtnl_unlock();
1113
1114 result = ieee80211_txq_setup_flows(local);
1115 if (result)
1116 goto fail_flows;
1117
1118 #ifdef CONFIG_INET
1119 local->ifa_notifier.notifier_call = ieee80211_ifa_changed;
1120 result = register_inetaddr_notifier(&local->ifa_notifier);
1121 if (result)
1122 goto fail_ifa;
1123 #endif
1124
1125 #if IS_ENABLED(CONFIG_IPV6)
1126 local->ifa6_notifier.notifier_call = ieee80211_ifa6_changed;
1127 result = register_inet6addr_notifier(&local->ifa6_notifier);
1128 if (result)
1129 goto fail_ifa6;
1130 #endif
1131
1132 return 0;
1133
1134 #if IS_ENABLED(CONFIG_IPV6)
1135 fail_ifa6:
1136 #ifdef CONFIG_INET
1137 unregister_inetaddr_notifier(&local->ifa_notifier);
1138 #endif
1139 #endif
1140 #if defined(CONFIG_INET) || defined(CONFIG_IPV6)
1141 fail_ifa:
1142 #endif
1143 ieee80211_txq_teardown_flows(local);
1144 fail_flows:
1145 rtnl_lock();
1146 rate_control_deinitialize(local);
1147 ieee80211_remove_interfaces(local);
1148 fail_rate:
1149 rtnl_unlock();
1150 ieee80211_led_exit(local);
1151 ieee80211_wep_free(local);
1152 destroy_workqueue(local->workqueue);
1153 fail_workqueue:
1154 wiphy_unregister(local->hw.wiphy);
1155 fail_wiphy_register:
1156 if (local->wiphy_ciphers_allocated)
1157 kfree(local->hw.wiphy->cipher_suites);
1158 kfree(local->int_scan_req);
1159 return result;
1160 }
1161 EXPORT_SYMBOL(ieee80211_register_hw);
1162
1163 void ieee80211_unregister_hw(struct ieee80211_hw *hw)
1164 {
1165 struct ieee80211_local *local = hw_to_local(hw);
1166
1167 tasklet_kill(&local->tx_pending_tasklet);
1168 tasklet_kill(&local->tasklet);
1169
1170 #ifdef CONFIG_INET
1171 unregister_inetaddr_notifier(&local->ifa_notifier);
1172 #endif
1173 #if IS_ENABLED(CONFIG_IPV6)
1174 unregister_inet6addr_notifier(&local->ifa6_notifier);
1175 #endif
1176
1177 rtnl_lock();
1178
1179 /*
1180 * At this point, interface list manipulations are fine
1181 * because the driver cannot be handing us frames any
1182 * more and the tasklet is killed.
1183 */
1184 ieee80211_remove_interfaces(local);
1185
1186 rtnl_unlock();
1187
1188 cancel_delayed_work_sync(&local->roc_work);
1189 cancel_work_sync(&local->restart_work);
1190 cancel_work_sync(&local->reconfig_filter);
1191 cancel_work_sync(&local->tdls_chsw_work);
1192 flush_work(&local->sched_scan_stopped_work);
1193 flush_work(&local->radar_detected_work);
1194
1195 ieee80211_clear_tx_pending(local);
1196 rate_control_deinitialize(local);
1197
1198 if (skb_queue_len(&local->skb_queue) ||
1199 skb_queue_len(&local->skb_queue_unreliable))
1200 wiphy_warn(local->hw.wiphy, "skb_queue not empty\n");
1201 skb_queue_purge(&local->skb_queue);
1202 skb_queue_purge(&local->skb_queue_unreliable);
1203 skb_queue_purge(&local->skb_queue_tdls_chsw);
1204 ieee80211_txq_teardown_flows(local);
1205
1206 destroy_workqueue(local->workqueue);
1207 wiphy_unregister(local->hw.wiphy);
1208 ieee80211_wep_free(local);
1209 ieee80211_led_exit(local);
1210 kfree(local->int_scan_req);
1211 }
1212 EXPORT_SYMBOL(ieee80211_unregister_hw);
1213
1214 static int ieee80211_free_ack_frame(int id, void *p, void *data)
1215 {
1216 WARN_ONCE(1, "Have pending ack frames!\n");
1217 kfree_skb(p);
1218 return 0;
1219 }
1220
1221 void ieee80211_free_hw(struct ieee80211_hw *hw)
1222 {
1223 struct ieee80211_local *local = hw_to_local(hw);
1224
1225 mutex_destroy(&local->iflist_mtx);
1226 mutex_destroy(&local->mtx);
1227
1228 if (local->wiphy_ciphers_allocated)
1229 kfree(local->hw.wiphy->cipher_suites);
1230
1231 idr_for_each(&local->ack_status_frames,
1232 ieee80211_free_ack_frame, NULL);
1233 idr_destroy(&local->ack_status_frames);
1234
1235 sta_info_stop(local);
1236
1237 ieee80211_free_led_names(local);
1238
1239 wiphy_free(local->hw.wiphy);
1240 }
1241 EXPORT_SYMBOL(ieee80211_free_hw);
1242
1243 static int __init ieee80211_init(void)
1244 {
1245 struct sk_buff *skb;
1246 int ret;
1247
1248 BUILD_BUG_ON(sizeof(struct ieee80211_tx_info) > sizeof(skb->cb));
1249 BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, driver_data) +
1250 IEEE80211_TX_INFO_DRIVER_DATA_SIZE > sizeof(skb->cb));
1251
1252 ret = rc80211_minstrel_init();
1253 if (ret)
1254 return ret;
1255
1256 ret = rc80211_minstrel_ht_init();
1257 if (ret)
1258 goto err_minstrel;
1259
1260 ret = ieee80211_iface_init();
1261 if (ret)
1262 goto err_netdev;
1263
1264 return 0;
1265 err_netdev:
1266 rc80211_minstrel_ht_exit();
1267 err_minstrel:
1268 rc80211_minstrel_exit();
1269
1270 return ret;
1271 }
1272
1273 static void __exit ieee80211_exit(void)
1274 {
1275 rc80211_minstrel_ht_exit();
1276 rc80211_minstrel_exit();
1277
1278 ieee80211s_stop();
1279
1280 ieee80211_iface_exit();
1281
1282 rcu_barrier();
1283 }
1284
1285
1286 subsys_initcall(ieee80211_init);
1287 module_exit(ieee80211_exit);
1288
1289 MODULE_DESCRIPTION("IEEE 802.11 subsystem");
1290 MODULE_LICENSE("GPL");
CRIS linux kernel tree