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 <net/ieee80211_radiotap.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/wireless.h>
22 #include <linux/rtnetlink.h>
23 #include <linux/bitmap.h>
24 #include <net/cfg80211.h>
26 #include "ieee80211_common.h"
27 #include "ieee80211_i.h"
28 #include "ieee80211_rate.h"
32 #include "ieee80211_led.h"
33 #include "ieee80211_cfg.h"
35 #include "debugfs_netdev.h"
38 * For seeing transmitted packets on monitor interfaces
39 * we have a radiotap header too.
41 struct ieee80211_tx_status_rtap_hdr {
42 struct ieee80211_radiotap_header hdr;
45 } __attribute__ ((packed));
47 /* common interface routines */
49 static struct net_device_stats *ieee80211_get_stats(struct net_device *dev)
51 struct ieee80211_sub_if_data *sdata;
52 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
53 return &(sdata->stats);
56 static int header_parse_80211(struct sk_buff *skb, unsigned char *haddr)
58 memcpy(haddr, skb_mac_header(skb) + 10, ETH_ALEN); /* addr2 */
62 /* master interface */
64 static int ieee80211_master_open(struct net_device *dev)
66 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
67 struct ieee80211_sub_if_data *sdata;
68 int res = -EOPNOTSUPP;
70 read_lock(&local->sub_if_lock);
71 list_for_each_entry(sdata, &local->sub_if_list, list) {
72 if (sdata->dev != dev && netif_running(sdata->dev)) {
77 read_unlock(&local->sub_if_lock);
81 static int ieee80211_master_stop(struct net_device *dev)
83 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
84 struct ieee80211_sub_if_data *sdata;
86 read_lock(&local->sub_if_lock);
87 list_for_each_entry(sdata, &local->sub_if_list, list)
88 if (sdata->dev != dev && netif_running(sdata->dev))
89 dev_close(sdata->dev);
90 read_unlock(&local->sub_if_lock);
95 /* management interface */
98 ieee80211_fill_frame_info(struct ieee80211_local *local,
99 struct ieee80211_frame_info *fi,
100 struct ieee80211_rx_status *status)
104 struct ieee80211_rate *rate;
106 jiffies_to_timespec(jiffies, &ts);
107 fi->hosttime = cpu_to_be64((u64) ts.tv_sec * 1000000 +
109 fi->mactime = cpu_to_be64(status->mactime);
110 switch (status->phymode) {
111 case MODE_IEEE80211A:
112 fi->phytype = htonl(ieee80211_phytype_ofdm_dot11_a);
114 case MODE_IEEE80211B:
115 fi->phytype = htonl(ieee80211_phytype_dsss_dot11_b);
117 case MODE_IEEE80211G:
118 fi->phytype = htonl(ieee80211_phytype_pbcc_dot11_g);
120 case MODE_ATHEROS_TURBO:
122 htonl(ieee80211_phytype_dsss_dot11_turbo);
125 fi->phytype = htonl(0xAAAAAAAA);
128 fi->channel = htonl(status->channel);
129 rate = ieee80211_get_rate(local, status->phymode,
132 fi->datarate = htonl(rate->rate);
133 if (rate->flags & IEEE80211_RATE_PREAMBLE2) {
134 if (status->rate == rate->val)
135 fi->preamble = htonl(2); /* long */
136 else if (status->rate == rate->val2)
137 fi->preamble = htonl(1); /* short */
139 fi->preamble = htonl(0);
141 fi->datarate = htonl(0);
142 fi->preamble = htonl(0);
145 fi->antenna = htonl(status->antenna);
146 fi->priority = htonl(0xffffffff); /* no clue */
147 fi->ssi_type = htonl(ieee80211_ssi_raw);
148 fi->ssi_signal = htonl(status->ssi);
149 fi->ssi_noise = 0x00000000;
152 /* clear everything because we really don't know.
153 * the msg_type field isn't present on monitor frames
154 * so we don't know whether it will be present or not,
155 * but it's ok to not clear it since it'll be assigned
157 memset(fi, 0, sizeof(*fi) - sizeof(fi->msg_type));
159 fi->ssi_type = htonl(ieee80211_ssi_none);
161 fi->version = htonl(IEEE80211_FI_VERSION);
162 fi->length = cpu_to_be32(sizeof(*fi) - sizeof(fi->msg_type));
165 /* this routine is actually not just for this, but also
166 * for pushing fake 'management' frames into userspace.
167 * it shall be replaced by a netlink-based system. */
169 ieee80211_rx_mgmt(struct ieee80211_local *local, struct sk_buff *skb,
170 struct ieee80211_rx_status *status, u32 msg_type)
172 struct ieee80211_frame_info *fi;
173 const size_t hlen = sizeof(struct ieee80211_frame_info);
174 struct ieee80211_sub_if_data *sdata;
176 skb->dev = local->apdev;
178 sdata = IEEE80211_DEV_TO_SUB_IF(local->apdev);
180 if (skb_headroom(skb) < hlen) {
181 I802_DEBUG_INC(local->rx_expand_skb_head);
182 if (pskb_expand_head(skb, hlen, 0, GFP_ATOMIC)) {
188 fi = (struct ieee80211_frame_info *) skb_push(skb, hlen);
190 ieee80211_fill_frame_info(local, fi, status);
191 fi->msg_type = htonl(msg_type);
193 sdata->stats.rx_packets++;
194 sdata->stats.rx_bytes += skb->len;
196 skb_set_mac_header(skb, 0);
197 skb->ip_summed = CHECKSUM_UNNECESSARY;
198 skb->pkt_type = PACKET_OTHERHOST;
199 skb->protocol = htons(ETH_P_802_2);
200 memset(skb->cb, 0, sizeof(skb->cb));
204 void ieee80211_key_threshold_notify(struct net_device *dev,
205 struct ieee80211_key *key,
206 struct sta_info *sta)
208 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
210 struct ieee80211_msg_key_notification *msg;
212 /* if no one will get it anyway, don't even allocate it.
213 * unlikely because this is only relevant for APs
214 * where the device must be open... */
215 if (unlikely(!local->apdev))
218 skb = dev_alloc_skb(sizeof(struct ieee80211_frame_info) +
219 sizeof(struct ieee80211_msg_key_notification));
223 skb_reserve(skb, sizeof(struct ieee80211_frame_info));
224 msg = (struct ieee80211_msg_key_notification *)
225 skb_put(skb, sizeof(struct ieee80211_msg_key_notification));
226 msg->tx_rx_count = key->tx_rx_count;
227 memcpy(msg->ifname, dev->name, IFNAMSIZ);
229 memcpy(msg->addr, sta->addr, ETH_ALEN);
231 memset(msg->addr, 0xff, ETH_ALEN);
233 key->tx_rx_count = 0;
235 ieee80211_rx_mgmt(local, skb, NULL,
236 ieee80211_msg_key_threshold_notification);
239 static int ieee80211_mgmt_open(struct net_device *dev)
241 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
243 if (!netif_running(local->mdev))
248 static int ieee80211_mgmt_stop(struct net_device *dev)
253 static int ieee80211_change_mtu_apdev(struct net_device *dev, int new_mtu)
255 /* FIX: what would be proper limits for MTU?
256 * This interface uses 802.11 frames. */
257 if (new_mtu < 256 || new_mtu > IEEE80211_MAX_DATA_LEN) {
258 printk(KERN_WARNING "%s: invalid MTU %d\n",
263 #ifdef CONFIG_MAC80211_VERBOSE_DEBUG
264 printk(KERN_DEBUG "%s: setting MTU %d\n", dev->name, new_mtu);
265 #endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
270 void ieee80211_if_mgmt_setup(struct net_device *dev)
273 dev->hard_start_xmit = ieee80211_mgmt_start_xmit;
274 dev->change_mtu = ieee80211_change_mtu_apdev;
275 dev->get_stats = ieee80211_get_stats;
276 dev->open = ieee80211_mgmt_open;
277 dev->stop = ieee80211_mgmt_stop;
278 dev->type = ARPHRD_IEEE80211_PRISM;
279 dev->hard_header_parse = header_parse_80211;
280 dev->uninit = ieee80211_if_reinit;
281 dev->destructor = ieee80211_if_free;
284 /* regular interfaces */
286 static int ieee80211_change_mtu(struct net_device *dev, int new_mtu)
288 /* FIX: what would be proper limits for MTU?
289 * This interface uses 802.3 frames. */
290 if (new_mtu < 256 || new_mtu > IEEE80211_MAX_DATA_LEN - 24 - 6) {
291 printk(KERN_WARNING "%s: invalid MTU %d\n",
296 #ifdef CONFIG_MAC80211_VERBOSE_DEBUG
297 printk(KERN_DEBUG "%s: setting MTU %d\n", dev->name, new_mtu);
298 #endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
303 static inline int identical_mac_addr_allowed(int type1, int type2)
305 return (type1 == IEEE80211_IF_TYPE_MNTR ||
306 type2 == IEEE80211_IF_TYPE_MNTR ||
307 (type1 == IEEE80211_IF_TYPE_AP &&
308 type2 == IEEE80211_IF_TYPE_WDS) ||
309 (type1 == IEEE80211_IF_TYPE_WDS &&
310 (type2 == IEEE80211_IF_TYPE_WDS ||
311 type2 == IEEE80211_IF_TYPE_AP)) ||
312 (type1 == IEEE80211_IF_TYPE_AP &&
313 type2 == IEEE80211_IF_TYPE_VLAN) ||
314 (type1 == IEEE80211_IF_TYPE_VLAN &&
315 (type2 == IEEE80211_IF_TYPE_AP ||
316 type2 == IEEE80211_IF_TYPE_VLAN)));
319 /* Check if running monitor interfaces should go to a "soft monitor" mode
320 * and switch them if necessary. */
321 static inline void ieee80211_start_soft_monitor(struct ieee80211_local *local)
323 struct ieee80211_if_init_conf conf;
325 if (local->open_count && local->open_count == local->monitors &&
326 !(local->hw.flags & IEEE80211_HW_MONITOR_DURING_OPER) &&
327 local->ops->remove_interface) {
329 conf.type = IEEE80211_IF_TYPE_MNTR;
330 conf.mac_addr = NULL;
331 local->ops->remove_interface(local_to_hw(local), &conf);
335 /* Check if running monitor interfaces should go to a "hard monitor" mode
336 * and switch them if necessary. */
337 static void ieee80211_start_hard_monitor(struct ieee80211_local *local)
339 struct ieee80211_if_init_conf conf;
341 if (local->open_count && local->open_count == local->monitors &&
342 !(local->hw.flags & IEEE80211_HW_MONITOR_DURING_OPER)) {
344 conf.type = IEEE80211_IF_TYPE_MNTR;
345 conf.mac_addr = NULL;
346 local->ops->add_interface(local_to_hw(local), &conf);
350 static void ieee80211_if_open(struct net_device *dev)
352 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
354 switch (sdata->type) {
355 case IEEE80211_IF_TYPE_STA:
356 case IEEE80211_IF_TYPE_IBSS:
357 sdata->u.sta.flags &= ~IEEE80211_STA_PREV_BSSID_SET;
362 static int ieee80211_open(struct net_device *dev)
364 struct ieee80211_sub_if_data *sdata, *nsdata;
365 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
366 struct ieee80211_if_init_conf conf;
369 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
370 read_lock(&local->sub_if_lock);
371 list_for_each_entry(nsdata, &local->sub_if_list, list) {
372 struct net_device *ndev = nsdata->dev;
374 if (ndev != dev && ndev != local->mdev && netif_running(ndev) &&
375 compare_ether_addr(dev->dev_addr, ndev->dev_addr) == 0 &&
376 !identical_mac_addr_allowed(sdata->type, nsdata->type)) {
377 read_unlock(&local->sub_if_lock);
381 read_unlock(&local->sub_if_lock);
383 if (sdata->type == IEEE80211_IF_TYPE_WDS &&
384 is_zero_ether_addr(sdata->u.wds.remote_addr))
387 if (sdata->type == IEEE80211_IF_TYPE_MNTR && local->open_count &&
388 !(local->hw.flags & IEEE80211_HW_MONITOR_DURING_OPER)) {
389 /* run the interface in a "soft monitor" mode */
392 local->hw.conf.flags |= IEEE80211_CONF_RADIOTAP;
395 ieee80211_if_open(dev);
396 ieee80211_start_soft_monitor(local);
398 conf.if_id = dev->ifindex;
399 conf.type = sdata->type;
400 if (sdata->type == IEEE80211_IF_TYPE_MNTR)
401 conf.mac_addr = NULL;
403 conf.mac_addr = dev->dev_addr;
404 res = local->ops->add_interface(local_to_hw(local), &conf);
406 if (sdata->type == IEEE80211_IF_TYPE_MNTR)
407 ieee80211_start_hard_monitor(local);
411 if (local->open_count == 0) {
413 tasklet_enable(&local->tx_pending_tasklet);
414 tasklet_enable(&local->tasklet);
415 if (local->ops->open)
416 res = local->ops->open(local_to_hw(local));
418 res = dev_open(local->mdev);
420 if (local->ops->stop)
421 local->ops->stop(local_to_hw(local));
423 res = ieee80211_hw_config(local);
424 if (res && local->ops->stop)
425 local->ops->stop(local_to_hw(local));
426 else if (!res && local->apdev)
427 dev_open(local->apdev);
431 if (local->ops->remove_interface)
432 local->ops->remove_interface(local_to_hw(local),
439 if (sdata->type == IEEE80211_IF_TYPE_MNTR) {
441 local->hw.conf.flags |= IEEE80211_CONF_RADIOTAP;
443 ieee80211_if_config(dev);
444 ieee80211_reset_erp_info(dev);
445 ieee80211_enable_keys(sdata);
448 if (sdata->type == IEEE80211_IF_TYPE_STA &&
449 !local->user_space_mlme)
450 netif_carrier_off(dev);
452 netif_carrier_on(dev);
454 netif_start_queue(dev);
458 static void ieee80211_if_shutdown(struct net_device *dev)
460 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
461 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
464 switch (sdata->type) {
465 case IEEE80211_IF_TYPE_STA:
466 case IEEE80211_IF_TYPE_IBSS:
467 sdata->u.sta.state = IEEE80211_DISABLED;
468 del_timer_sync(&sdata->u.sta.timer);
470 * Holding the sub_if_lock for writing here blocks
471 * out the receive path and makes sure it's not
472 * currently processing a packet that may get
473 * added to the queue.
475 write_lock_bh(&local->sub_if_lock);
476 skb_queue_purge(&sdata->u.sta.skb_queue);
477 write_unlock_bh(&local->sub_if_lock);
479 if (!local->ops->hw_scan &&
480 local->scan_dev == sdata->dev) {
481 local->sta_scanning = 0;
482 cancel_delayed_work(&local->scan_work);
484 flush_workqueue(local->hw.workqueue);
489 static int ieee80211_stop(struct net_device *dev)
491 struct ieee80211_sub_if_data *sdata;
492 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
494 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
496 if (sdata->type == IEEE80211_IF_TYPE_MNTR &&
497 local->open_count > 1 &&
498 !(local->hw.flags & IEEE80211_HW_MONITOR_DURING_OPER)) {
499 /* remove "soft monitor" interface */
502 if (!local->monitors)
503 local->hw.conf.flags &= ~IEEE80211_CONF_RADIOTAP;
507 netif_stop_queue(dev);
508 ieee80211_if_shutdown(dev);
510 if (sdata->type == IEEE80211_IF_TYPE_MNTR) {
512 if (!local->monitors)
513 local->hw.conf.flags &= ~IEEE80211_CONF_RADIOTAP;
515 /* disable all keys for as long as this netdev is down */
516 ieee80211_disable_keys(sdata);
520 if (local->open_count == 0) {
521 if (netif_running(local->mdev))
522 dev_close(local->mdev);
524 dev_close(local->apdev);
525 if (local->ops->stop)
526 local->ops->stop(local_to_hw(local));
527 tasklet_disable(&local->tx_pending_tasklet);
528 tasklet_disable(&local->tasklet);
530 if (local->ops->remove_interface) {
531 struct ieee80211_if_init_conf conf;
533 conf.if_id = dev->ifindex;
534 conf.type = sdata->type;
535 conf.mac_addr = dev->dev_addr;
536 local->ops->remove_interface(local_to_hw(local), &conf);
539 ieee80211_start_hard_monitor(local);
544 enum netif_tx_lock_class {
549 static inline void netif_tx_lock_nested(struct net_device *dev, int subclass)
551 spin_lock_nested(&dev->_xmit_lock, subclass);
552 dev->xmit_lock_owner = smp_processor_id();
555 static void ieee80211_set_multicast_list(struct net_device *dev)
557 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
558 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
559 unsigned short flags;
561 netif_tx_lock_nested(local->mdev, TX_LOCK_MASTER);
562 if (((dev->flags & IFF_ALLMULTI) != 0) ^
563 ((sdata->flags & IEEE80211_SDATA_ALLMULTI) != 0)) {
564 if (sdata->flags & IEEE80211_SDATA_ALLMULTI)
565 local->iff_allmultis--;
567 local->iff_allmultis++;
568 sdata->flags ^= IEEE80211_SDATA_ALLMULTI;
570 if (((dev->flags & IFF_PROMISC) != 0) ^
571 ((sdata->flags & IEEE80211_SDATA_PROMISC) != 0)) {
572 if (sdata->flags & IEEE80211_SDATA_PROMISC)
573 local->iff_promiscs--;
575 local->iff_promiscs++;
576 sdata->flags ^= IEEE80211_SDATA_PROMISC;
578 if (dev->mc_count != sdata->mc_count) {
579 local->mc_count = local->mc_count - sdata->mc_count +
581 sdata->mc_count = dev->mc_count;
583 if (local->ops->set_multicast_list) {
584 flags = local->mdev->flags;
585 if (local->iff_allmultis)
586 flags |= IFF_ALLMULTI;
587 if (local->iff_promiscs)
588 flags |= IFF_PROMISC;
589 read_lock(&local->sub_if_lock);
590 local->ops->set_multicast_list(local_to_hw(local), flags,
592 read_unlock(&local->sub_if_lock);
594 netif_tx_unlock(local->mdev);
597 /* Must not be called for mdev and apdev */
598 void ieee80211_if_setup(struct net_device *dev)
601 dev->hard_start_xmit = ieee80211_subif_start_xmit;
602 dev->wireless_handlers = &ieee80211_iw_handler_def;
603 dev->set_multicast_list = ieee80211_set_multicast_list;
604 dev->change_mtu = ieee80211_change_mtu;
605 dev->get_stats = ieee80211_get_stats;
606 dev->open = ieee80211_open;
607 dev->stop = ieee80211_stop;
608 dev->uninit = ieee80211_if_reinit;
609 dev->destructor = ieee80211_if_free;
612 /* WDS specialties */
614 int ieee80211_if_update_wds(struct net_device *dev, u8 *remote_addr)
616 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
617 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
618 struct sta_info *sta;
620 if (compare_ether_addr(remote_addr, sdata->u.wds.remote_addr) == 0)
623 /* Create STA entry for the new peer */
624 sta = sta_info_add(local, dev, remote_addr, GFP_KERNEL);
629 /* Remove STA entry for the old peer */
630 sta = sta_info_get(local, sdata->u.wds.remote_addr);
635 printk(KERN_DEBUG "%s: could not find STA entry for WDS link "
636 "peer " MAC_FMT "\n",
637 dev->name, MAC_ARG(sdata->u.wds.remote_addr));
640 /* Update WDS link data */
641 memcpy(&sdata->u.wds.remote_addr, remote_addr, ETH_ALEN);
646 /* everything else */
648 static int __ieee80211_if_config(struct net_device *dev,
649 struct sk_buff *beacon,
650 struct ieee80211_tx_control *control)
652 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
653 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
654 struct ieee80211_if_conf conf;
655 static u8 scan_bssid[] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
657 if (!local->ops->config_interface || !netif_running(dev))
660 memset(&conf, 0, sizeof(conf));
661 conf.type = sdata->type;
662 if (sdata->type == IEEE80211_IF_TYPE_STA ||
663 sdata->type == IEEE80211_IF_TYPE_IBSS) {
664 if (local->sta_scanning &&
665 local->scan_dev == dev)
666 conf.bssid = scan_bssid;
668 conf.bssid = sdata->u.sta.bssid;
669 conf.ssid = sdata->u.sta.ssid;
670 conf.ssid_len = sdata->u.sta.ssid_len;
671 conf.generic_elem = sdata->u.sta.extra_ie;
672 conf.generic_elem_len = sdata->u.sta.extra_ie_len;
673 } else if (sdata->type == IEEE80211_IF_TYPE_AP) {
674 conf.ssid = sdata->u.ap.ssid;
675 conf.ssid_len = sdata->u.ap.ssid_len;
676 conf.generic_elem = sdata->u.ap.generic_elem;
677 conf.generic_elem_len = sdata->u.ap.generic_elem_len;
678 conf.beacon = beacon;
679 conf.beacon_control = control;
681 return local->ops->config_interface(local_to_hw(local),
682 dev->ifindex, &conf);
685 int ieee80211_if_config(struct net_device *dev)
687 return __ieee80211_if_config(dev, NULL, NULL);
690 int ieee80211_if_config_beacon(struct net_device *dev)
692 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
693 struct ieee80211_tx_control control;
696 if (!(local->hw.flags & IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE))
698 skb = ieee80211_beacon_get(local_to_hw(local), dev->ifindex, &control);
701 return __ieee80211_if_config(dev, skb, &control);
704 int ieee80211_hw_config(struct ieee80211_local *local)
706 struct ieee80211_hw_mode *mode;
707 struct ieee80211_channel *chan;
710 if (local->sta_scanning) {
711 chan = local->scan_channel;
712 mode = local->scan_hw_mode;
714 chan = local->oper_channel;
715 mode = local->oper_hw_mode;
718 local->hw.conf.channel = chan->chan;
719 local->hw.conf.channel_val = chan->val;
720 local->hw.conf.power_level = chan->power_level;
721 local->hw.conf.freq = chan->freq;
722 local->hw.conf.phymode = mode->mode;
723 local->hw.conf.antenna_max = chan->antenna_max;
724 local->hw.conf.chan = chan;
725 local->hw.conf.mode = mode;
727 #ifdef CONFIG_MAC80211_VERBOSE_DEBUG
728 printk(KERN_DEBUG "HW CONFIG: channel=%d freq=%d "
729 "phymode=%d\n", local->hw.conf.channel, local->hw.conf.freq,
730 local->hw.conf.phymode);
731 #endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
733 if (local->ops->config)
734 ret = local->ops->config(local_to_hw(local), &local->hw.conf);
739 void ieee80211_erp_info_change_notify(struct net_device *dev, u8 changes)
741 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
742 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
743 if (local->ops->erp_ie_changed)
744 local->ops->erp_ie_changed(local_to_hw(local), changes,
745 !!(sdata->flags & IEEE80211_SDATA_USE_PROTECTION),
746 !(sdata->flags & IEEE80211_SDATA_SHORT_PREAMBLE));
749 void ieee80211_reset_erp_info(struct net_device *dev)
751 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
753 sdata->flags &= ~(IEEE80211_SDATA_USE_PROTECTION |
754 IEEE80211_SDATA_SHORT_PREAMBLE);
755 ieee80211_erp_info_change_notify(dev,
756 IEEE80211_ERP_CHANGE_PROTECTION |
757 IEEE80211_ERP_CHANGE_PREAMBLE);
760 struct dev_mc_list *ieee80211_get_mc_list_item(struct ieee80211_hw *hw,
761 struct dev_mc_list *prev,
764 struct ieee80211_local *local = hw_to_local(hw);
765 struct ieee80211_sub_if_data *sdata = *ptr;
766 struct dev_mc_list *mc;
772 if (!prev || !prev->next) {
774 sdata = list_entry(sdata->list.next,
775 struct ieee80211_sub_if_data, list);
777 sdata = list_entry(local->sub_if_list.next,
778 struct ieee80211_sub_if_data, list);
779 if (&sdata->list != &local->sub_if_list)
780 mc = sdata->dev->mc_list;
789 EXPORT_SYMBOL(ieee80211_get_mc_list_item);
791 void ieee80211_tx_status_irqsafe(struct ieee80211_hw *hw,
793 struct ieee80211_tx_status *status)
795 struct ieee80211_local *local = hw_to_local(hw);
796 struct ieee80211_tx_status *saved;
799 skb->dev = local->mdev;
800 saved = kmalloc(sizeof(struct ieee80211_tx_status), GFP_ATOMIC);
801 if (unlikely(!saved)) {
803 printk(KERN_WARNING "%s: Not enough memory, "
804 "dropping tx status", skb->dev->name);
805 /* should be dev_kfree_skb_irq, but due to this function being
806 * named _irqsafe instead of just _irq we can't be sure that
807 * people won't call it from non-irq contexts */
808 dev_kfree_skb_any(skb);
811 memcpy(saved, status, sizeof(struct ieee80211_tx_status));
812 /* copy pointer to saved status into skb->cb for use by tasklet */
813 memcpy(skb->cb, &saved, sizeof(saved));
815 skb->pkt_type = IEEE80211_TX_STATUS_MSG;
816 skb_queue_tail(status->control.flags & IEEE80211_TXCTL_REQ_TX_STATUS ?
817 &local->skb_queue : &local->skb_queue_unreliable, skb);
818 tmp = skb_queue_len(&local->skb_queue) +
819 skb_queue_len(&local->skb_queue_unreliable);
820 while (tmp > IEEE80211_IRQSAFE_QUEUE_LIMIT &&
821 (skb = skb_dequeue(&local->skb_queue_unreliable))) {
822 memcpy(&saved, skb->cb, sizeof(saved));
824 dev_kfree_skb_irq(skb);
826 I802_DEBUG_INC(local->tx_status_drop);
828 tasklet_schedule(&local->tasklet);
830 EXPORT_SYMBOL(ieee80211_tx_status_irqsafe);
832 static void ieee80211_tasklet_handler(unsigned long data)
834 struct ieee80211_local *local = (struct ieee80211_local *) data;
836 struct ieee80211_rx_status rx_status;
837 struct ieee80211_tx_status *tx_status;
839 while ((skb = skb_dequeue(&local->skb_queue)) ||
840 (skb = skb_dequeue(&local->skb_queue_unreliable))) {
841 switch (skb->pkt_type) {
842 case IEEE80211_RX_MSG:
843 /* status is in skb->cb */
844 memcpy(&rx_status, skb->cb, sizeof(rx_status));
845 /* Clear skb->type in order to not confuse kernel
848 __ieee80211_rx(local_to_hw(local), skb, &rx_status);
850 case IEEE80211_TX_STATUS_MSG:
851 /* get pointer to saved status out of skb->cb */
852 memcpy(&tx_status, skb->cb, sizeof(tx_status));
854 ieee80211_tx_status(local_to_hw(local),
858 default: /* should never get here! */
859 printk(KERN_ERR "%s: Unknown message type (%d)\n",
860 local->mdev->name, skb->pkt_type);
867 /* Remove added headers (e.g., QoS control), encryption header/MIC, etc. to
868 * make a prepared TX frame (one that has been given to hw) to look like brand
869 * new IEEE 802.11 frame that is ready to go through TX processing again.
870 * Also, tx_packet_data in cb is restored from tx_control. */
871 static void ieee80211_remove_tx_extra(struct ieee80211_local *local,
872 struct ieee80211_key *key,
874 struct ieee80211_tx_control *control)
876 int hdrlen, iv_len, mic_len;
877 struct ieee80211_tx_packet_data *pkt_data;
879 pkt_data = (struct ieee80211_tx_packet_data *)skb->cb;
880 pkt_data->ifindex = control->ifindex;
882 if (control->flags & IEEE80211_TXCTL_REQ_TX_STATUS)
883 pkt_data->flags |= IEEE80211_TXPD_REQ_TX_STATUS;
884 if (control->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT)
885 pkt_data->flags |= IEEE80211_TXPD_DO_NOT_ENCRYPT;
886 if (control->flags & IEEE80211_TXCTL_REQUEUE)
887 pkt_data->flags |= IEEE80211_TXPD_REQUEUE;
888 if (control->type == IEEE80211_IF_TYPE_MGMT)
889 pkt_data->flags |= IEEE80211_TXPD_MGMT_IFACE;
890 pkt_data->queue = control->queue;
892 hdrlen = ieee80211_get_hdrlen_from_skb(skb);
897 switch (key->conf.alg) {
900 mic_len = WEP_ICV_LEN;
903 iv_len = TKIP_IV_LEN;
904 mic_len = TKIP_ICV_LEN;
907 iv_len = CCMP_HDR_LEN;
908 mic_len = CCMP_MIC_LEN;
914 if (skb->len >= mic_len &&
915 !(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE))
916 skb_trim(skb, skb->len - mic_len);
917 if (skb->len >= iv_len && skb->len > hdrlen) {
918 memmove(skb->data + iv_len, skb->data, hdrlen);
919 skb_pull(skb, iv_len);
924 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
925 u16 fc = le16_to_cpu(hdr->frame_control);
926 if ((fc & 0x8C) == 0x88) /* QoS Control Field */ {
927 fc &= ~IEEE80211_STYPE_QOS_DATA;
928 hdr->frame_control = cpu_to_le16(fc);
929 memmove(skb->data + 2, skb->data, hdrlen - 2);
935 void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb,
936 struct ieee80211_tx_status *status)
938 struct sk_buff *skb2;
939 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
940 struct ieee80211_local *local = hw_to_local(hw);
943 struct ieee80211_tx_status_rtap_hdr *rthdr;
944 struct ieee80211_sub_if_data *sdata;
949 "%s: ieee80211_tx_status called with NULL status\n",
955 if (status->excessive_retries) {
956 struct sta_info *sta;
957 sta = sta_info_get(local, hdr->addr1);
959 if (sta->flags & WLAN_STA_PS) {
960 /* The STA is in power save mode, so assume
961 * that this TX packet failed because of that.
963 status->excessive_retries = 0;
964 status->flags |= IEEE80211_TX_STATUS_TX_FILTERED;
970 if (status->flags & IEEE80211_TX_STATUS_TX_FILTERED) {
971 struct sta_info *sta;
972 sta = sta_info_get(local, hdr->addr1);
974 sta->tx_filtered_count++;
976 /* Clear the TX filter mask for this STA when sending
977 * the next packet. If the STA went to power save mode,
978 * this will happen when it is waking up for the next
980 sta->clear_dst_mask = 1;
982 /* TODO: Is the WLAN_STA_PS flag always set here or is
983 * the race between RX and TX status causing some
984 * packets to be filtered out before 80211.o gets an
985 * update for PS status? This seems to be the case, so
986 * no changes are likely to be needed. */
987 if (sta->flags & WLAN_STA_PS &&
988 skb_queue_len(&sta->tx_filtered) <
990 ieee80211_remove_tx_extra(local, sta->key,
993 skb_queue_tail(&sta->tx_filtered, skb);
994 } else if (!(sta->flags & WLAN_STA_PS) &&
995 !(status->control.flags & IEEE80211_TXCTL_REQUEUE)) {
996 /* Software retry the packet once */
997 status->control.flags |= IEEE80211_TXCTL_REQUEUE;
998 ieee80211_remove_tx_extra(local, sta->key,
1001 dev_queue_xmit(skb);
1003 if (net_ratelimit()) {
1004 printk(KERN_DEBUG "%s: dropped TX "
1005 "filtered frame queue_len=%d "
1010 !!(sta->flags & WLAN_STA_PS),
1019 /* FIXME: STUPID to call this with both local and local->mdev */
1020 rate_control_tx_status(local, local->mdev, skb, status);
1023 ieee80211_led_tx(local, 0);
1026 * Fragments are passed to low-level drivers as separate skbs, so these
1027 * are actually fragments, not frames. Update frame counters only for
1028 * the first fragment of the frame. */
1030 frag = le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_FRAG;
1031 type = le16_to_cpu(hdr->frame_control) & IEEE80211_FCTL_FTYPE;
1033 if (status->flags & IEEE80211_TX_STATUS_ACK) {
1035 local->dot11TransmittedFrameCount++;
1036 if (is_multicast_ether_addr(hdr->addr1))
1037 local->dot11MulticastTransmittedFrameCount++;
1038 if (status->retry_count > 0)
1039 local->dot11RetryCount++;
1040 if (status->retry_count > 1)
1041 local->dot11MultipleRetryCount++;
1044 /* This counter shall be incremented for an acknowledged MPDU
1045 * with an individual address in the address 1 field or an MPDU
1046 * with a multicast address in the address 1 field of type Data
1048 if (!is_multicast_ether_addr(hdr->addr1) ||
1049 type == IEEE80211_FTYPE_DATA ||
1050 type == IEEE80211_FTYPE_MGMT)
1051 local->dot11TransmittedFragmentCount++;
1054 local->dot11FailedCount++;
1057 msg_type = (status->flags & IEEE80211_TX_STATUS_ACK) ?
1058 ieee80211_msg_tx_callback_ack : ieee80211_msg_tx_callback_fail;
1060 /* this was a transmitted frame, but now we want to reuse it */
1063 if ((status->control.flags & IEEE80211_TXCTL_REQ_TX_STATUS) &&
1065 if (local->monitors) {
1066 skb2 = skb_clone(skb, GFP_ATOMIC);
1073 /* Send frame to hostapd */
1074 ieee80211_rx_mgmt(local, skb2, NULL, msg_type);
1080 if (!local->monitors) {
1085 /* send frame to monitor interfaces now */
1087 if (skb_headroom(skb) < sizeof(*rthdr)) {
1088 printk(KERN_ERR "ieee80211_tx_status: headroom too small\n");
1093 rthdr = (struct ieee80211_tx_status_rtap_hdr*)
1094 skb_push(skb, sizeof(*rthdr));
1096 memset(rthdr, 0, sizeof(*rthdr));
1097 rthdr->hdr.it_len = cpu_to_le16(sizeof(*rthdr));
1098 rthdr->hdr.it_present =
1099 cpu_to_le32((1 << IEEE80211_RADIOTAP_TX_FLAGS) |
1100 (1 << IEEE80211_RADIOTAP_DATA_RETRIES));
1102 if (!(status->flags & IEEE80211_TX_STATUS_ACK) &&
1103 !is_multicast_ether_addr(hdr->addr1))
1104 rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_FAIL);
1106 if ((status->control.flags & IEEE80211_TXCTL_USE_RTS_CTS) &&
1107 (status->control.flags & IEEE80211_TXCTL_USE_CTS_PROTECT))
1108 rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_CTS);
1109 else if (status->control.flags & IEEE80211_TXCTL_USE_RTS_CTS)
1110 rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_RTS);
1112 rthdr->data_retries = status->retry_count;
1114 read_lock(&local->sub_if_lock);
1115 monitors = local->monitors;
1116 list_for_each_entry(sdata, &local->sub_if_list, list) {
1118 * Using the monitors counter is possibly racy, but
1119 * if the value is wrong we simply either clone the skb
1120 * once too much or forget sending it to one monitor iface
1121 * The latter case isn't nice but fixing the race is much
1124 if (!monitors || !skb)
1127 if (sdata->type == IEEE80211_IF_TYPE_MNTR) {
1128 if (!netif_running(sdata->dev))
1132 skb2 = skb_clone(skb, GFP_KERNEL);
1135 skb->dev = sdata->dev;
1136 /* XXX: is this sufficient for BPF? */
1137 skb_set_mac_header(skb, 0);
1138 skb->ip_summed = CHECKSUM_UNNECESSARY;
1139 skb->pkt_type = PACKET_OTHERHOST;
1140 skb->protocol = htons(ETH_P_802_2);
1141 memset(skb->cb, 0, sizeof(skb->cb));
1147 read_unlock(&local->sub_if_lock);
1151 EXPORT_SYMBOL(ieee80211_tx_status);
1153 struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len,
1154 const struct ieee80211_ops *ops)
1156 struct net_device *mdev;
1157 struct ieee80211_local *local;
1158 struct ieee80211_sub_if_data *sdata;
1160 struct wiphy *wiphy;
1162 /* Ensure 32-byte alignment of our private data and hw private data.
1163 * We use the wiphy priv data for both our ieee80211_local and for
1164 * the driver's private data
1166 * In memory it'll be like this:
1168 * +-------------------------+
1170 * +-------------------------+
1171 * | struct ieee80211_local |
1172 * +-------------------------+
1173 * | driver's private data |
1174 * +-------------------------+
1177 priv_size = ((sizeof(struct ieee80211_local) +
1178 NETDEV_ALIGN_CONST) & ~NETDEV_ALIGN_CONST) +
1181 wiphy = wiphy_new(&mac80211_config_ops, priv_size);
1186 wiphy->privid = mac80211_wiphy_privid;
1188 local = wiphy_priv(wiphy);
1189 local->hw.wiphy = wiphy;
1191 local->hw.priv = (char *)local +
1192 ((sizeof(struct ieee80211_local) +
1193 NETDEV_ALIGN_CONST) & ~NETDEV_ALIGN_CONST);
1196 BUG_ON(!ops->config);
1197 BUG_ON(!ops->add_interface);
1200 /* for now, mdev needs sub_if_data :/ */
1201 mdev = alloc_netdev(sizeof(struct ieee80211_sub_if_data),
1202 "wmaster%d", ether_setup);
1208 sdata = IEEE80211_DEV_TO_SUB_IF(mdev);
1209 mdev->ieee80211_ptr = &sdata->wdev;
1210 sdata->wdev.wiphy = wiphy;
1212 local->hw.queues = 1; /* default */
1215 local->rx_pre_handlers = ieee80211_rx_pre_handlers;
1216 local->rx_handlers = ieee80211_rx_handlers;
1217 local->tx_handlers = ieee80211_tx_handlers;
1219 local->bridge_packets = 1;
1221 local->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
1222 local->fragmentation_threshold = IEEE80211_MAX_FRAG_THRESHOLD;
1223 local->short_retry_limit = 7;
1224 local->long_retry_limit = 4;
1225 local->hw.conf.radio_enabled = 1;
1227 local->enabled_modes = (unsigned int) -1;
1229 INIT_LIST_HEAD(&local->modes_list);
1231 rwlock_init(&local->sub_if_lock);
1232 INIT_LIST_HEAD(&local->sub_if_list);
1234 INIT_DELAYED_WORK(&local->scan_work, ieee80211_sta_scan_work);
1235 ieee80211_rx_bss_list_init(mdev);
1237 sta_info_init(local);
1239 mdev->hard_start_xmit = ieee80211_master_start_xmit;
1240 mdev->open = ieee80211_master_open;
1241 mdev->stop = ieee80211_master_stop;
1242 mdev->type = ARPHRD_IEEE80211;
1243 mdev->hard_header_parse = header_parse_80211;
1245 sdata->type = IEEE80211_IF_TYPE_AP;
1247 sdata->local = local;
1248 sdata->u.ap.force_unicast_rateidx = -1;
1249 sdata->u.ap.max_ratectrl_rateidx = -1;
1250 ieee80211_if_sdata_init(sdata);
1251 list_add_tail(&sdata->list, &local->sub_if_list);
1253 tasklet_init(&local->tx_pending_tasklet, ieee80211_tx_pending,
1254 (unsigned long)local);
1255 tasklet_disable(&local->tx_pending_tasklet);
1257 tasklet_init(&local->tasklet,
1258 ieee80211_tasklet_handler,
1259 (unsigned long) local);
1260 tasklet_disable(&local->tasklet);
1262 skb_queue_head_init(&local->skb_queue);
1263 skb_queue_head_init(&local->skb_queue_unreliable);
1265 return local_to_hw(local);
1267 EXPORT_SYMBOL(ieee80211_alloc_hw);
1269 int ieee80211_register_hw(struct ieee80211_hw *hw)
1271 struct ieee80211_local *local = hw_to_local(hw);
1275 result = wiphy_register(local->hw.wiphy);
1279 name = wiphy_dev(local->hw.wiphy)->driver->name;
1280 local->hw.workqueue = create_singlethread_workqueue(name);
1281 if (!local->hw.workqueue) {
1283 goto fail_workqueue;
1287 * The hardware needs headroom for sending the frame,
1288 * and we need some headroom for passing the frame to monitor
1289 * interfaces, but never both at the same time.
1291 local->tx_headroom = max_t(unsigned int , local->hw.extra_tx_headroom,
1292 sizeof(struct ieee80211_tx_status_rtap_hdr));
1294 debugfs_hw_add(local);
1296 local->hw.conf.beacon_int = 1000;
1298 local->wstats_flags |= local->hw.max_rssi ?
1299 IW_QUAL_LEVEL_UPDATED : IW_QUAL_LEVEL_INVALID;
1300 local->wstats_flags |= local->hw.max_signal ?
1301 IW_QUAL_QUAL_UPDATED : IW_QUAL_QUAL_INVALID;
1302 local->wstats_flags |= local->hw.max_noise ?
1303 IW_QUAL_NOISE_UPDATED : IW_QUAL_NOISE_INVALID;
1304 if (local->hw.max_rssi < 0 || local->hw.max_noise < 0)
1305 local->wstats_flags |= IW_QUAL_DBM;
1307 result = sta_info_start(local);
1312 result = dev_alloc_name(local->mdev, local->mdev->name);
1316 memcpy(local->mdev->dev_addr, local->hw.wiphy->perm_addr, ETH_ALEN);
1317 SET_NETDEV_DEV(local->mdev, wiphy_dev(local->hw.wiphy));
1319 result = register_netdevice(local->mdev);
1323 ieee80211_debugfs_add_netdev(IEEE80211_DEV_TO_SUB_IF(local->mdev));
1325 result = ieee80211_init_rate_ctrl_alg(local, NULL);
1327 printk(KERN_DEBUG "%s: Failed to initialize rate control "
1328 "algorithm\n", local->mdev->name);
1332 result = ieee80211_wep_init(local);
1335 printk(KERN_DEBUG "%s: Failed to initialize wep\n",
1340 ieee80211_install_qdisc(local->mdev);
1342 /* add one default STA interface */
1343 result = ieee80211_if_add(local->mdev, "wlan%d", NULL,
1344 IEEE80211_IF_TYPE_STA);
1346 printk(KERN_WARNING "%s: Failed to add default virtual iface\n",
1349 local->reg_state = IEEE80211_DEV_REGISTERED;
1352 ieee80211_led_init(local);
1357 rate_control_deinitialize(local);
1359 ieee80211_debugfs_remove_netdev(IEEE80211_DEV_TO_SUB_IF(local->mdev));
1360 unregister_netdevice(local->mdev);
1363 sta_info_stop(local);
1365 debugfs_hw_del(local);
1366 destroy_workqueue(local->hw.workqueue);
1368 wiphy_unregister(local->hw.wiphy);
1371 EXPORT_SYMBOL(ieee80211_register_hw);
1373 int ieee80211_register_hwmode(struct ieee80211_hw *hw,
1374 struct ieee80211_hw_mode *mode)
1376 struct ieee80211_local *local = hw_to_local(hw);
1377 struct ieee80211_rate *rate;
1380 INIT_LIST_HEAD(&mode->list);
1381 list_add_tail(&mode->list, &local->modes_list);
1383 local->hw_modes |= (1 << mode->mode);
1384 for (i = 0; i < mode->num_rates; i++) {
1385 rate = &(mode->rates[i]);
1386 rate->rate_inv = CHAN_UTIL_RATE_LCM / rate->rate;
1388 ieee80211_prepare_rates(local, mode);
1390 if (!local->oper_hw_mode) {
1391 /* Default to this mode */
1392 local->hw.conf.phymode = mode->mode;
1393 local->oper_hw_mode = local->scan_hw_mode = mode;
1394 local->oper_channel = local->scan_channel = &mode->channels[0];
1395 local->hw.conf.mode = local->oper_hw_mode;
1396 local->hw.conf.chan = local->oper_channel;
1399 if (!(hw->flags & IEEE80211_HW_DEFAULT_REG_DOMAIN_CONFIGURED))
1400 ieee80211_set_default_regdomain(mode);
1404 EXPORT_SYMBOL(ieee80211_register_hwmode);
1406 void ieee80211_unregister_hw(struct ieee80211_hw *hw)
1408 struct ieee80211_local *local = hw_to_local(hw);
1409 struct ieee80211_sub_if_data *sdata, *tmp;
1410 struct list_head tmp_list;
1413 tasklet_kill(&local->tx_pending_tasklet);
1414 tasklet_kill(&local->tasklet);
1418 BUG_ON(local->reg_state != IEEE80211_DEV_REGISTERED);
1420 local->reg_state = IEEE80211_DEV_UNREGISTERED;
1422 ieee80211_if_del_mgmt(local);
1424 write_lock_bh(&local->sub_if_lock);
1425 list_replace_init(&local->sub_if_list, &tmp_list);
1426 write_unlock_bh(&local->sub_if_lock);
1428 list_for_each_entry_safe(sdata, tmp, &tmp_list, list)
1429 __ieee80211_if_del(local, sdata);
1433 ieee80211_rx_bss_list_deinit(local->mdev);
1434 ieee80211_clear_tx_pending(local);
1435 sta_info_stop(local);
1436 rate_control_deinitialize(local);
1437 debugfs_hw_del(local);
1439 for (i = 0; i < NUM_IEEE80211_MODES; i++) {
1440 kfree(local->supp_rates[i]);
1441 kfree(local->basic_rates[i]);
1444 if (skb_queue_len(&local->skb_queue)
1445 || skb_queue_len(&local->skb_queue_unreliable))
1446 printk(KERN_WARNING "%s: skb_queue not empty\n",
1448 skb_queue_purge(&local->skb_queue);
1449 skb_queue_purge(&local->skb_queue_unreliable);
1451 destroy_workqueue(local->hw.workqueue);
1452 wiphy_unregister(local->hw.wiphy);
1453 ieee80211_wep_free(local);
1454 ieee80211_led_exit(local);
1456 EXPORT_SYMBOL(ieee80211_unregister_hw);
1458 void ieee80211_free_hw(struct ieee80211_hw *hw)
1460 struct ieee80211_local *local = hw_to_local(hw);
1462 ieee80211_if_free(local->mdev);
1463 wiphy_free(local->hw.wiphy);
1465 EXPORT_SYMBOL(ieee80211_free_hw);
1467 struct net_device_stats *ieee80211_dev_stats(struct net_device *dev)
1469 struct ieee80211_sub_if_data *sdata;
1470 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1471 return &sdata->stats;
1474 static int __init ieee80211_init(void)
1476 struct sk_buff *skb;
1479 BUILD_BUG_ON(sizeof(struct ieee80211_tx_packet_data) > sizeof(skb->cb));
1481 ret = ieee80211_wme_register();
1483 printk(KERN_DEBUG "ieee80211_init: failed to "
1484 "initialize WME (err=%d)\n", ret);
1488 ieee80211_debugfs_netdev_init();
1489 ieee80211_regdomain_init();
1494 static void __exit ieee80211_exit(void)
1496 ieee80211_wme_unregister();
1497 ieee80211_debugfs_netdev_exit();
1501 subsys_initcall(ieee80211_init);
1502 module_exit(ieee80211_exit);
1504 MODULE_DESCRIPTION("IEEE 802.11 subsystem");
1505 MODULE_LICENSE("GPL");