2 * Copyright 2002-2005, Instant802 Networks, Inc.
3 * Copyright 2005-2006, Devicescape Software, Inc.
4 * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
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.
11 #include <net/mac80211.h>
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>
20 #include <linux/rtnetlink.h>
21 #include <linux/bitmap.h>
22 #include <linux/pm_qos_params.h>
23 #include <linux/inetdevice.h>
24 #include <net/net_namespace.h>
25 #include <net/cfg80211.h>
27 #include "ieee80211_i.h"
28 #include "driver-ops.h"
37 bool ieee80211_disable_40mhz_24ghz;
38 module_param(ieee80211_disable_40mhz_24ghz, bool, 0644);
39 MODULE_PARM_DESC(ieee80211_disable_40mhz_24ghz,
40 "Disable 40MHz support in the 2.4GHz band");
42 void ieee80211_configure_filter(struct ieee80211_local *local)
45 unsigned int changed_flags;
46 unsigned int new_flags = 0;
48 if (atomic_read(&local->iff_promiscs))
49 new_flags |= FIF_PROMISC_IN_BSS;
51 if (atomic_read(&local->iff_allmultis))
52 new_flags |= FIF_ALLMULTI;
54 if (local->monitors || local->scanning)
55 new_flags |= FIF_BCN_PRBRESP_PROMISC;
57 if (local->fif_fcsfail)
58 new_flags |= FIF_FCSFAIL;
60 if (local->fif_plcpfail)
61 new_flags |= FIF_PLCPFAIL;
63 if (local->fif_control)
64 new_flags |= FIF_CONTROL;
66 if (local->fif_other_bss)
67 new_flags |= FIF_OTHER_BSS;
69 if (local->fif_pspoll)
70 new_flags |= FIF_PSPOLL;
72 spin_lock_bh(&local->filter_lock);
73 changed_flags = local->filter_flags ^ new_flags;
75 mc = drv_prepare_multicast(local, &local->mc_list);
76 spin_unlock_bh(&local->filter_lock);
81 drv_configure_filter(local, changed_flags, &new_flags, mc);
83 WARN_ON(new_flags & (1<<31));
85 local->filter_flags = new_flags & ~(1<<31);
88 static void ieee80211_reconfig_filter(struct work_struct *work)
90 struct ieee80211_local *local =
91 container_of(work, struct ieee80211_local, reconfig_filter);
93 ieee80211_configure_filter(local);
96 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed)
98 struct ieee80211_channel *chan, *scan_chan;
101 enum nl80211_channel_type channel_type;
106 scan_chan = local->scan_channel;
108 offchannel_flag = local->hw.conf.flags & IEEE80211_CONF_OFFCHANNEL;
111 channel_type = NL80211_CHAN_NO_HT;
112 local->hw.conf.flags |= IEEE80211_CONF_OFFCHANNEL;
113 } else if (local->tmp_channel) {
114 chan = scan_chan = local->tmp_channel;
115 channel_type = local->tmp_channel_type;
116 local->hw.conf.flags |= IEEE80211_CONF_OFFCHANNEL;
118 chan = local->oper_channel;
119 channel_type = local->_oper_channel_type;
120 local->hw.conf.flags &= ~IEEE80211_CONF_OFFCHANNEL;
122 offchannel_flag ^= local->hw.conf.flags & IEEE80211_CONF_OFFCHANNEL;
124 if (offchannel_flag || chan != local->hw.conf.channel ||
125 channel_type != local->hw.conf.channel_type) {
126 local->hw.conf.channel = chan;
127 local->hw.conf.channel_type = channel_type;
128 changed |= IEEE80211_CONF_CHANGE_CHANNEL;
131 if (!conf_is_ht(&local->hw.conf)) {
133 * mac80211.h documents that this is only valid
134 * when the channel is set to an HT type, and
135 * that otherwise STATIC is used.
137 local->hw.conf.smps_mode = IEEE80211_SMPS_STATIC;
138 } else if (local->hw.conf.smps_mode != local->smps_mode) {
139 local->hw.conf.smps_mode = local->smps_mode;
140 changed |= IEEE80211_CONF_CHANGE_SMPS;
144 power = chan->max_power;
146 power = local->power_constr_level ?
147 (chan->max_power - local->power_constr_level) :
150 if (local->user_power_level >= 0)
151 power = min(power, local->user_power_level);
153 if (local->hw.conf.power_level != power) {
154 changed |= IEEE80211_CONF_CHANGE_POWER;
155 local->hw.conf.power_level = power;
158 if (changed && local->open_count) {
159 ret = drv_config(local, changed);
162 * HW reconfiguration should never fail, the driver has told
163 * us what it can support so it should live up to that promise.
166 * rfkill is not integrated with mac80211 and a
167 * configuration command can thus fail if hardware rfkill
170 * FIXME: integrate rfkill with mac80211 and then add this
180 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
183 struct ieee80211_local *local = sdata->local;
184 static const u8 zero[ETH_ALEN] = { 0 };
189 if (sdata->vif.type == NL80211_IFTYPE_STATION) {
191 * While not associated, claim a BSSID of all-zeroes
192 * so that drivers don't do any weird things with the
193 * BSSID at that time.
195 if (sdata->vif.bss_conf.assoc)
196 sdata->vif.bss_conf.bssid = sdata->u.mgd.bssid;
198 sdata->vif.bss_conf.bssid = zero;
199 } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
200 sdata->vif.bss_conf.bssid = sdata->u.ibss.bssid;
201 else if (sdata->vif.type == NL80211_IFTYPE_AP)
202 sdata->vif.bss_conf.bssid = sdata->vif.addr;
203 else if (ieee80211_vif_is_mesh(&sdata->vif)) {
204 sdata->vif.bss_conf.bssid = zero;
210 switch (sdata->vif.type) {
211 case NL80211_IFTYPE_AP:
212 case NL80211_IFTYPE_ADHOC:
213 case NL80211_IFTYPE_MESH_POINT:
216 /* do not warn to simplify caller in scan.c */
217 changed &= ~BSS_CHANGED_BEACON_ENABLED;
218 if (WARN_ON(changed & BSS_CHANGED_BEACON))
223 if (changed & BSS_CHANGED_BEACON_ENABLED) {
224 if (local->quiescing || !ieee80211_sdata_running(sdata) ||
225 test_bit(SCAN_SW_SCANNING, &local->scanning)) {
226 sdata->vif.bss_conf.enable_beacon = false;
229 * Beacon should be enabled, but AP mode must
230 * check whether there is a beacon configured.
232 switch (sdata->vif.type) {
233 case NL80211_IFTYPE_AP:
234 sdata->vif.bss_conf.enable_beacon =
235 !!sdata->u.ap.beacon;
237 case NL80211_IFTYPE_ADHOC:
238 sdata->vif.bss_conf.enable_beacon =
239 !!sdata->u.ibss.presp;
241 case NL80211_IFTYPE_MESH_POINT:
242 sdata->vif.bss_conf.enable_beacon = true;
252 drv_bss_info_changed(local, sdata, &sdata->vif.bss_conf, changed);
255 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata)
257 sdata->vif.bss_conf.use_cts_prot = false;
258 sdata->vif.bss_conf.use_short_preamble = false;
259 sdata->vif.bss_conf.use_short_slot = false;
260 return BSS_CHANGED_ERP_CTS_PROT |
261 BSS_CHANGED_ERP_PREAMBLE |
262 BSS_CHANGED_ERP_SLOT;
265 static void ieee80211_tasklet_handler(unsigned long data)
267 struct ieee80211_local *local = (struct ieee80211_local *) data;
270 while ((skb = skb_dequeue(&local->skb_queue)) ||
271 (skb = skb_dequeue(&local->skb_queue_unreliable))) {
272 switch (skb->pkt_type) {
273 case IEEE80211_RX_MSG:
274 /* Clear skb->pkt_type in order to not confuse kernel
277 ieee80211_rx(local_to_hw(local), skb);
279 case IEEE80211_TX_STATUS_MSG:
281 ieee80211_tx_status(local_to_hw(local), skb);
284 WARN(1, "mac80211: Packet is of unknown type %d\n",
292 static void ieee80211_restart_work(struct work_struct *work)
294 struct ieee80211_local *local =
295 container_of(work, struct ieee80211_local, restart_work);
298 ieee80211_reconfig(local);
302 void ieee80211_restart_hw(struct ieee80211_hw *hw)
304 struct ieee80211_local *local = hw_to_local(hw);
306 trace_api_restart_hw(local);
308 /* use this reason, __ieee80211_resume will unblock it */
309 ieee80211_stop_queues_by_reason(hw,
310 IEEE80211_QUEUE_STOP_REASON_SUSPEND);
312 schedule_work(&local->restart_work);
314 EXPORT_SYMBOL(ieee80211_restart_hw);
316 static void ieee80211_recalc_smps_work(struct work_struct *work)
318 struct ieee80211_local *local =
319 container_of(work, struct ieee80211_local, recalc_smps);
321 mutex_lock(&local->iflist_mtx);
322 ieee80211_recalc_smps(local, NULL);
323 mutex_unlock(&local->iflist_mtx);
327 static int ieee80211_ifa_changed(struct notifier_block *nb,
328 unsigned long data, void *arg)
330 struct in_ifaddr *ifa = arg;
331 struct ieee80211_local *local =
332 container_of(nb, struct ieee80211_local,
334 struct net_device *ndev = ifa->ifa_dev->dev;
335 struct wireless_dev *wdev = ndev->ieee80211_ptr;
336 struct in_device *idev;
337 struct ieee80211_sub_if_data *sdata;
338 struct ieee80211_bss_conf *bss_conf;
339 struct ieee80211_if_managed *ifmgd;
342 if (!netif_running(ndev))
345 /* Make sure it's our interface that got changed */
349 if (wdev->wiphy != local->hw.wiphy)
352 sdata = IEEE80211_DEV_TO_SUB_IF(ndev);
353 bss_conf = &sdata->vif.bss_conf;
355 /* ARP filtering is only supported in managed mode */
356 if (sdata->vif.type != NL80211_IFTYPE_STATION)
359 idev = sdata->dev->ip_ptr;
363 ifmgd = &sdata->u.mgd;
364 mutex_lock(&ifmgd->mtx);
366 /* Copy the addresses to the bss_conf list */
367 ifa = idev->ifa_list;
368 while (c < IEEE80211_BSS_ARP_ADDR_LIST_LEN && ifa) {
369 bss_conf->arp_addr_list[c] = ifa->ifa_address;
374 /* If not all addresses fit the list, disable filtering */
376 sdata->arp_filter_state = false;
379 sdata->arp_filter_state = true;
381 bss_conf->arp_addr_cnt = c;
383 /* Configure driver only if associated */
384 if (ifmgd->associated) {
385 bss_conf->arp_filter_enabled = sdata->arp_filter_state;
386 ieee80211_bss_info_change_notify(sdata,
387 BSS_CHANGED_ARP_FILTER);
390 mutex_unlock(&ifmgd->mtx);
396 static int ieee80211_napi_poll(struct napi_struct *napi, int budget)
398 struct ieee80211_local *local =
399 container_of(napi, struct ieee80211_local, napi);
401 return local->ops->napi_poll(&local->hw, budget);
404 void ieee80211_napi_schedule(struct ieee80211_hw *hw)
406 struct ieee80211_local *local = hw_to_local(hw);
408 napi_schedule(&local->napi);
410 EXPORT_SYMBOL(ieee80211_napi_schedule);
412 void ieee80211_napi_complete(struct ieee80211_hw *hw)
414 struct ieee80211_local *local = hw_to_local(hw);
416 napi_complete(&local->napi);
418 EXPORT_SYMBOL(ieee80211_napi_complete);
420 /* There isn't a lot of sense in it, but you can transmit anything you like */
421 static const struct ieee80211_txrx_stypes
422 ieee80211_default_mgmt_stypes[NUM_NL80211_IFTYPES] = {
423 [NL80211_IFTYPE_ADHOC] = {
425 .rx = BIT(IEEE80211_STYPE_ACTION >> 4),
427 [NL80211_IFTYPE_STATION] = {
429 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
430 BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
432 [NL80211_IFTYPE_AP] = {
434 .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) |
435 BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) |
436 BIT(IEEE80211_STYPE_PROBE_REQ >> 4) |
437 BIT(IEEE80211_STYPE_DISASSOC >> 4) |
438 BIT(IEEE80211_STYPE_AUTH >> 4) |
439 BIT(IEEE80211_STYPE_DEAUTH >> 4) |
440 BIT(IEEE80211_STYPE_ACTION >> 4),
442 [NL80211_IFTYPE_AP_VLAN] = {
445 .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) |
446 BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) |
447 BIT(IEEE80211_STYPE_PROBE_REQ >> 4) |
448 BIT(IEEE80211_STYPE_DISASSOC >> 4) |
449 BIT(IEEE80211_STYPE_AUTH >> 4) |
450 BIT(IEEE80211_STYPE_DEAUTH >> 4) |
451 BIT(IEEE80211_STYPE_ACTION >> 4),
455 struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len,
456 const struct ieee80211_ops *ops)
458 struct ieee80211_local *local;
462 /* Ensure 32-byte alignment of our private data and hw private data.
463 * We use the wiphy priv data for both our ieee80211_local and for
464 * the driver's private data
466 * In memory it'll be like this:
468 * +-------------------------+
470 * +-------------------------+
471 * | struct ieee80211_local |
472 * +-------------------------+
473 * | driver's private data |
474 * +-------------------------+
477 priv_size = ALIGN(sizeof(*local), NETDEV_ALIGN) + priv_data_len;
479 wiphy = wiphy_new(&mac80211_config_ops, priv_size);
484 wiphy->mgmt_stypes = ieee80211_default_mgmt_stypes;
486 wiphy->flags |= WIPHY_FLAG_NETNS_OK |
487 WIPHY_FLAG_4ADDR_AP |
488 WIPHY_FLAG_4ADDR_STATION;
489 wiphy->privid = mac80211_wiphy_privid;
491 wiphy->bss_priv_size = sizeof(struct ieee80211_bss);
493 local = wiphy_priv(wiphy);
495 local->hw.wiphy = wiphy;
497 local->hw.priv = (char *)local + ALIGN(sizeof(*local), NETDEV_ALIGN);
502 BUG_ON(!ops->config);
503 BUG_ON(!ops->add_interface);
504 BUG_ON(!ops->remove_interface);
505 BUG_ON(!ops->configure_filter);
508 /* set up some defaults */
509 local->hw.queues = 1;
510 local->hw.max_rates = 1;
511 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
512 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
513 local->user_power_level = -1;
514 local->uapsd_queues = IEEE80211_DEFAULT_UAPSD_QUEUES;
515 local->uapsd_max_sp_len = IEEE80211_DEFAULT_MAX_SP_LEN;
517 INIT_LIST_HEAD(&local->interfaces);
519 __hw_addr_init(&local->mc_list);
521 mutex_init(&local->iflist_mtx);
522 mutex_init(&local->mtx);
524 mutex_init(&local->key_mtx);
525 spin_lock_init(&local->filter_lock);
526 spin_lock_init(&local->queue_stop_reason_lock);
528 INIT_DELAYED_WORK(&local->scan_work, ieee80211_scan_work);
530 ieee80211_work_init(local);
532 INIT_WORK(&local->restart_work, ieee80211_restart_work);
534 INIT_WORK(&local->reconfig_filter, ieee80211_reconfig_filter);
535 INIT_WORK(&local->recalc_smps, ieee80211_recalc_smps_work);
536 local->smps_mode = IEEE80211_SMPS_OFF;
538 INIT_WORK(&local->dynamic_ps_enable_work,
539 ieee80211_dynamic_ps_enable_work);
540 INIT_WORK(&local->dynamic_ps_disable_work,
541 ieee80211_dynamic_ps_disable_work);
542 setup_timer(&local->dynamic_ps_timer,
543 ieee80211_dynamic_ps_timer, (unsigned long) local);
545 sta_info_init(local);
547 for (i = 0; i < IEEE80211_MAX_QUEUES; i++) {
548 skb_queue_head_init(&local->pending[i]);
549 atomic_set(&local->agg_queue_stop[i], 0);
551 tasklet_init(&local->tx_pending_tasklet, ieee80211_tx_pending,
552 (unsigned long)local);
554 tasklet_init(&local->tasklet,
555 ieee80211_tasklet_handler,
556 (unsigned long) local);
558 skb_queue_head_init(&local->skb_queue);
559 skb_queue_head_init(&local->skb_queue_unreliable);
561 /* init dummy netdev for use w/ NAPI */
562 init_dummy_netdev(&local->napi_dev);
564 return local_to_hw(local);
566 EXPORT_SYMBOL(ieee80211_alloc_hw);
568 int ieee80211_register_hw(struct ieee80211_hw *hw)
570 struct ieee80211_local *local = hw_to_local(hw);
572 enum ieee80211_band band;
573 int channels, max_bitrates;
575 static const u32 cipher_suites[] = {
576 /* keep WEP first, it may be removed below */
577 WLAN_CIPHER_SUITE_WEP40,
578 WLAN_CIPHER_SUITE_WEP104,
579 WLAN_CIPHER_SUITE_TKIP,
580 WLAN_CIPHER_SUITE_CCMP,
582 /* keep last -- depends on hw flags! */
583 WLAN_CIPHER_SUITE_AES_CMAC
587 * generic code guarantees at least one band,
588 * set this very early because much code assumes
589 * that hw.conf.channel is assigned
594 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
595 struct ieee80211_supported_band *sband;
597 sband = local->hw.wiphy->bands[band];
600 if (!local->oper_channel) {
601 /* init channel we're on */
602 local->hw.conf.channel =
603 local->oper_channel = &sband->channels[0];
604 local->hw.conf.channel_type = NL80211_CHAN_NO_HT;
606 channels += sband->n_channels;
608 if (max_bitrates < sband->n_bitrates)
609 max_bitrates = sband->n_bitrates;
610 supp_ht = supp_ht || sband->ht_cap.ht_supported;
613 local->int_scan_req = kzalloc(sizeof(*local->int_scan_req) +
614 sizeof(void *) * channels, GFP_KERNEL);
615 if (!local->int_scan_req)
618 /* if low-level driver supports AP, we also support VLAN */
619 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_AP))
620 local->hw.wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP_VLAN);
622 /* mac80211 always supports monitor */
623 local->hw.wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR);
625 if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM)
626 local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
627 else if (local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)
628 local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC;
630 WARN((local->hw.flags & IEEE80211_HW_SUPPORTS_UAPSD)
631 && (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK),
632 "U-APSD not supported with HW_PS_NULLFUNC_STACK\n");
635 * Calculate scan IE length -- we need this to alloc
636 * memory and to subtract from the driver limit. It
637 * includes the (extended) supported rates and HT
638 * information -- SSID is the driver's responsibility.
640 local->scan_ies_len = 4 + max_bitrates; /* (ext) supp rates */
642 local->scan_ies_len += 2 + sizeof(struct ieee80211_ht_cap);
644 if (!local->ops->hw_scan) {
645 /* For hw_scan, driver needs to set these up. */
646 local->hw.wiphy->max_scan_ssids = 4;
647 local->hw.wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
651 * If the driver supports any scan IEs, then assume the
652 * limit includes the IEs mac80211 will add, otherwise
653 * leave it at zero and let the driver sort it out; we
654 * still pass our IEs to the driver but userspace will
655 * not be allowed to in that case.
657 if (local->hw.wiphy->max_scan_ie_len)
658 local->hw.wiphy->max_scan_ie_len -= local->scan_ies_len;
660 local->hw.wiphy->cipher_suites = cipher_suites;
661 local->hw.wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
662 if (!(local->hw.flags & IEEE80211_HW_MFP_CAPABLE))
663 local->hw.wiphy->n_cipher_suites--;
664 if (IS_ERR(local->wep_tx_tfm) || IS_ERR(local->wep_rx_tfm)) {
665 local->hw.wiphy->cipher_suites += 2;
666 local->hw.wiphy->n_cipher_suites -= 2;
669 result = wiphy_register(local->hw.wiphy);
671 goto fail_wiphy_register;
674 * We use the number of queues for feature tests (QoS, HT) internally
675 * so restrict them appropriately.
677 if (hw->queues > IEEE80211_MAX_QUEUES)
678 hw->queues = IEEE80211_MAX_QUEUES;
681 create_singlethread_workqueue(wiphy_name(local->hw.wiphy));
682 if (!local->workqueue) {
688 * The hardware needs headroom for sending the frame,
689 * and we need some headroom for passing the frame to monitor
690 * interfaces, but never both at the same time.
692 BUILD_BUG_ON(IEEE80211_TX_STATUS_HEADROOM !=
693 sizeof(struct ieee80211_tx_status_rtap_hdr));
694 local->tx_headroom = max_t(unsigned int , local->hw.extra_tx_headroom,
695 sizeof(struct ieee80211_tx_status_rtap_hdr));
697 debugfs_hw_add(local);
700 * if the driver doesn't specify a max listen interval we
701 * use 5 which should be a safe default
703 if (local->hw.max_listen_interval == 0)
704 local->hw.max_listen_interval = 5;
706 local->hw.conf.listen_interval = local->hw.max_listen_interval;
708 local->dynamic_ps_forced_timeout = -1;
710 result = sta_info_start(local);
714 result = ieee80211_wep_init(local);
716 printk(KERN_DEBUG "%s: Failed to initialize wep: %d\n",
717 wiphy_name(local->hw.wiphy), result);
721 result = ieee80211_init_rate_ctrl_alg(local,
722 hw->rate_control_algorithm);
724 printk(KERN_DEBUG "%s: Failed to initialize rate control "
725 "algorithm\n", wiphy_name(local->hw.wiphy));
729 /* add one default STA interface if supported */
730 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_STATION)) {
731 result = ieee80211_if_add(local, "wlan%d", NULL,
732 NL80211_IFTYPE_STATION, NULL);
734 printk(KERN_WARNING "%s: Failed to add default virtual iface\n",
735 wiphy_name(local->hw.wiphy));
740 ieee80211_led_init(local);
742 local->network_latency_notifier.notifier_call =
743 ieee80211_max_network_latency;
744 result = pm_qos_add_notifier(PM_QOS_NETWORK_LATENCY,
745 &local->network_latency_notifier);
752 local->ifa_notifier.notifier_call = ieee80211_ifa_changed;
753 result = register_inetaddr_notifier(&local->ifa_notifier);
758 netif_napi_add(&local->napi_dev, &local->napi, ieee80211_napi_poll,
759 local->hw.napi_weight);
765 pm_qos_remove_notifier(PM_QOS_NETWORK_LATENCY,
766 &local->network_latency_notifier);
770 ieee80211_led_exit(local);
771 ieee80211_remove_interfaces(local);
774 ieee80211_wep_free(local);
775 sta_info_stop(local);
777 destroy_workqueue(local->workqueue);
779 wiphy_unregister(local->hw.wiphy);
781 kfree(local->int_scan_req);
784 EXPORT_SYMBOL(ieee80211_register_hw);
786 void ieee80211_unregister_hw(struct ieee80211_hw *hw)
788 struct ieee80211_local *local = hw_to_local(hw);
790 tasklet_kill(&local->tx_pending_tasklet);
791 tasklet_kill(&local->tasklet);
793 pm_qos_remove_notifier(PM_QOS_NETWORK_LATENCY,
794 &local->network_latency_notifier);
796 unregister_inetaddr_notifier(&local->ifa_notifier);
802 * At this point, interface list manipulations are fine
803 * because the driver cannot be handing us frames any
804 * more and the tasklet is killed.
806 ieee80211_remove_interfaces(local);
810 cancel_work_sync(&local->reconfig_filter);
812 ieee80211_clear_tx_pending(local);
813 sta_info_stop(local);
814 rate_control_deinitialize(local);
816 if (skb_queue_len(&local->skb_queue) ||
817 skb_queue_len(&local->skb_queue_unreliable))
818 printk(KERN_WARNING "%s: skb_queue not empty\n",
819 wiphy_name(local->hw.wiphy));
820 skb_queue_purge(&local->skb_queue);
821 skb_queue_purge(&local->skb_queue_unreliable);
823 destroy_workqueue(local->workqueue);
824 wiphy_unregister(local->hw.wiphy);
825 ieee80211_wep_free(local);
826 ieee80211_led_exit(local);
827 kfree(local->int_scan_req);
829 EXPORT_SYMBOL(ieee80211_unregister_hw);
831 void ieee80211_free_hw(struct ieee80211_hw *hw)
833 struct ieee80211_local *local = hw_to_local(hw);
835 mutex_destroy(&local->iflist_mtx);
836 mutex_destroy(&local->mtx);
838 wiphy_free(local->hw.wiphy);
840 EXPORT_SYMBOL(ieee80211_free_hw);
842 static int __init ieee80211_init(void)
847 BUILD_BUG_ON(sizeof(struct ieee80211_tx_info) > sizeof(skb->cb));
848 BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, driver_data) +
849 IEEE80211_TX_INFO_DRIVER_DATA_SIZE > sizeof(skb->cb));
851 ret = rc80211_minstrel_init();
855 ret = rc80211_minstrel_ht_init();
859 ret = rc80211_pid_init();
863 ret = ieee80211_iface_init();
871 rc80211_minstrel_ht_exit();
873 rc80211_minstrel_exit();
878 static void __exit ieee80211_exit(void)
881 rc80211_minstrel_ht_exit();
882 rc80211_minstrel_exit();
885 * For key todo, it'll be empty by now but the work
886 * might still be scheduled.
888 flush_scheduled_work();
893 ieee80211_iface_exit();
897 subsys_initcall(ieee80211_init);
898 module_exit(ieee80211_exit);
900 MODULE_DESCRIPTION("IEEE 802.11 subsystem");
901 MODULE_LICENSE("GPL");