Commit | Line | Data |
---|---|---|
f0706e82 JB |
1 | /* |
2 | * Copyright 2002-2005, Instant802 Networks, Inc. | |
3 | * Copyright 2005-2006, Devicescape Software, Inc. | |
4 | * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License version 2 as | |
8 | * published by the Free Software Foundation. | |
9 | */ | |
10 | ||
11 | #include <net/mac80211.h> | |
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> | |
f0706e82 | 23 | #include <linux/bitmap.h> |
881d966b | 24 | #include <net/net_namespace.h> |
f0706e82 JB |
25 | #include <net/cfg80211.h> |
26 | ||
f0706e82 | 27 | #include "ieee80211_i.h" |
2c8dccc7 | 28 | #include "rate.h" |
f7a92144 | 29 | #include "mesh.h" |
f0706e82 | 30 | #include "wep.h" |
f0706e82 JB |
31 | #include "wme.h" |
32 | #include "aes_ccm.h" | |
2c8dccc7 | 33 | #include "led.h" |
e0eb6859 | 34 | #include "cfg.h" |
e9f207f0 JB |
35 | #include "debugfs.h" |
36 | #include "debugfs_netdev.h" | |
f0706e82 | 37 | |
b306f453 JB |
38 | /* |
39 | * For seeing transmitted packets on monitor interfaces | |
40 | * we have a radiotap header too. | |
41 | */ | |
42 | struct ieee80211_tx_status_rtap_hdr { | |
43 | struct ieee80211_radiotap_header hdr; | |
44 | __le16 tx_flags; | |
45 | u8 data_retries; | |
46 | } __attribute__ ((packed)); | |
47 | ||
f0706e82 | 48 | |
4150c572 | 49 | /* must be called under mdev tx lock */ |
0d143fe1 | 50 | void ieee80211_configure_filter(struct ieee80211_local *local) |
4150c572 JB |
51 | { |
52 | unsigned int changed_flags; | |
53 | unsigned int new_flags = 0; | |
54 | ||
53918994 | 55 | if (atomic_read(&local->iff_promiscs)) |
4150c572 JB |
56 | new_flags |= FIF_PROMISC_IN_BSS; |
57 | ||
53918994 | 58 | if (atomic_read(&local->iff_allmultis)) |
4150c572 JB |
59 | new_flags |= FIF_ALLMULTI; |
60 | ||
61 | if (local->monitors) | |
8cc9a739 MW |
62 | new_flags |= FIF_BCN_PRBRESP_PROMISC; |
63 | ||
64 | if (local->fif_fcsfail) | |
65 | new_flags |= FIF_FCSFAIL; | |
66 | ||
67 | if (local->fif_plcpfail) | |
68 | new_flags |= FIF_PLCPFAIL; | |
69 | ||
70 | if (local->fif_control) | |
71 | new_flags |= FIF_CONTROL; | |
72 | ||
73 | if (local->fif_other_bss) | |
74 | new_flags |= FIF_OTHER_BSS; | |
4150c572 JB |
75 | |
76 | changed_flags = local->filter_flags ^ new_flags; | |
77 | ||
78 | /* be a bit nasty */ | |
79 | new_flags |= (1<<31); | |
80 | ||
81 | local->ops->configure_filter(local_to_hw(local), | |
82 | changed_flags, &new_flags, | |
83 | local->mdev->mc_count, | |
84 | local->mdev->mc_list); | |
85 | ||
86 | WARN_ON(new_flags & (1<<31)); | |
87 | ||
88 | local->filter_flags = new_flags & ~(1<<31); | |
89 | } | |
90 | ||
b2c258fb | 91 | /* master interface */ |
f0706e82 | 92 | |
0d143fe1 JB |
93 | static int header_parse_80211(const struct sk_buff *skb, unsigned char *haddr) |
94 | { | |
95 | memcpy(haddr, skb_mac_header(skb) + 10, ETH_ALEN); /* addr2 */ | |
96 | return ETH_ALEN; | |
97 | } | |
98 | ||
99 | static const struct header_ops ieee80211_header_ops = { | |
100 | .create = eth_header, | |
101 | .parse = header_parse_80211, | |
102 | .rebuild = eth_rebuild_header, | |
103 | .cache = eth_header_cache, | |
104 | .cache_update = eth_header_cache_update, | |
105 | }; | |
106 | ||
b2c258fb JB |
107 | static int ieee80211_master_open(struct net_device *dev) |
108 | { | |
133b8226 JB |
109 | struct ieee80211_master_priv *mpriv = netdev_priv(dev); |
110 | struct ieee80211_local *local = mpriv->local; | |
b2c258fb JB |
111 | struct ieee80211_sub_if_data *sdata; |
112 | int res = -EOPNOTSUPP; | |
f0706e82 | 113 | |
79010420 JB |
114 | /* we hold the RTNL here so can safely walk the list */ |
115 | list_for_each_entry(sdata, &local->interfaces, list) { | |
3e122be0 | 116 | if (netif_running(sdata->dev)) { |
b2c258fb JB |
117 | res = 0; |
118 | break; | |
119 | } | |
120 | } | |
36d6825b JB |
121 | |
122 | if (res) | |
123 | return res; | |
124 | ||
51cb6db0 | 125 | netif_tx_start_all_queues(local->mdev); |
36d6825b JB |
126 | |
127 | return 0; | |
b2c258fb | 128 | } |
f0706e82 | 129 | |
b2c258fb | 130 | static int ieee80211_master_stop(struct net_device *dev) |
f0706e82 | 131 | { |
133b8226 JB |
132 | struct ieee80211_master_priv *mpriv = netdev_priv(dev); |
133 | struct ieee80211_local *local = mpriv->local; | |
b2c258fb | 134 | struct ieee80211_sub_if_data *sdata; |
f0706e82 | 135 | |
79010420 JB |
136 | /* we hold the RTNL here so can safely walk the list */ |
137 | list_for_each_entry(sdata, &local->interfaces, list) | |
3e122be0 | 138 | if (netif_running(sdata->dev)) |
b2c258fb | 139 | dev_close(sdata->dev); |
f0706e82 | 140 | |
b2c258fb JB |
141 | return 0; |
142 | } | |
f0706e82 | 143 | |
4150c572 JB |
144 | static void ieee80211_master_set_multicast_list(struct net_device *dev) |
145 | { | |
133b8226 JB |
146 | struct ieee80211_master_priv *mpriv = netdev_priv(dev); |
147 | struct ieee80211_local *local = mpriv->local; | |
4150c572 JB |
148 | |
149 | ieee80211_configure_filter(local); | |
150 | } | |
151 | ||
b2c258fb JB |
152 | /* everything else */ |
153 | ||
9d139c81 | 154 | int ieee80211_if_config(struct ieee80211_sub_if_data *sdata, u32 changed) |
b2c258fb | 155 | { |
9d139c81 | 156 | struct ieee80211_local *local = sdata->local; |
b2c258fb | 157 | struct ieee80211_if_conf conf; |
b2c258fb | 158 | |
9d139c81 JB |
159 | if (WARN_ON(!netif_running(sdata->dev))) |
160 | return 0; | |
161 | ||
7a725f73 JB |
162 | if (WARN_ON(sdata->vif.type == NL80211_IFTYPE_AP_VLAN)) |
163 | return -EINVAL; | |
164 | ||
9d139c81 | 165 | if (!local->ops->config_interface) |
f0706e82 | 166 | return 0; |
f0706e82 | 167 | |
b2c258fb | 168 | memset(&conf, 0, sizeof(conf)); |
9d139c81 JB |
169 | conf.changed = changed; |
170 | ||
05c914fe JB |
171 | if (sdata->vif.type == NL80211_IFTYPE_STATION || |
172 | sdata->vif.type == NL80211_IFTYPE_ADHOC) { | |
4150c572 | 173 | conf.bssid = sdata->u.sta.bssid; |
b2c258fb JB |
174 | conf.ssid = sdata->u.sta.ssid; |
175 | conf.ssid_len = sdata->u.sta.ssid_len; | |
05c914fe | 176 | } else if (sdata->vif.type == NL80211_IFTYPE_AP) { |
9d139c81 | 177 | conf.bssid = sdata->dev->dev_addr; |
b2c258fb JB |
178 | conf.ssid = sdata->u.ap.ssid; |
179 | conf.ssid_len = sdata->u.ap.ssid_len; | |
9d139c81 JB |
180 | } else if (ieee80211_vif_is_mesh(&sdata->vif)) { |
181 | u8 zero[ETH_ALEN] = { 0 }; | |
182 | conf.bssid = zero; | |
183 | conf.ssid = zero; | |
184 | conf.ssid_len = 0; | |
185 | } else { | |
186 | WARN_ON(1); | |
187 | return -EINVAL; | |
f0706e82 | 188 | } |
f0706e82 | 189 | |
9d139c81 JB |
190 | if (WARN_ON(!conf.bssid && (changed & IEEE80211_IFCC_BSSID))) |
191 | return -EINVAL; | |
f0706e82 | 192 | |
9d139c81 JB |
193 | if (WARN_ON(!conf.ssid && (changed & IEEE80211_IFCC_SSID))) |
194 | return -EINVAL; | |
f0706e82 | 195 | |
9d139c81 JB |
196 | return local->ops->config_interface(local_to_hw(local), |
197 | &sdata->vif, &conf); | |
b2c258fb | 198 | } |
f0706e82 | 199 | |
b2c258fb JB |
200 | int ieee80211_hw_config(struct ieee80211_local *local) |
201 | { | |
b2c258fb JB |
202 | struct ieee80211_channel *chan; |
203 | int ret = 0; | |
f0706e82 | 204 | |
c2b13452 | 205 | if (local->sw_scanning) |
b2c258fb | 206 | chan = local->scan_channel; |
8318d78a | 207 | else |
b2c258fb | 208 | chan = local->oper_channel; |
f0706e82 | 209 | |
8318d78a JB |
210 | local->hw.conf.channel = chan; |
211 | ||
212 | if (!local->hw.conf.power_level) | |
213 | local->hw.conf.power_level = chan->max_power; | |
214 | else | |
215 | local->hw.conf.power_level = min(chan->max_power, | |
216 | local->hw.conf.power_level); | |
217 | ||
b2c258fb | 218 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
8318d78a JB |
219 | printk(KERN_DEBUG "%s: HW CONFIG: freq=%d\n", |
220 | wiphy_name(local->hw.wiphy), chan->center_freq); | |
221 | #endif | |
b2c258fb | 222 | |
d73782fd | 223 | if (local->open_count) { |
b2c258fb | 224 | ret = local->ops->config(local_to_hw(local), &local->hw.conf); |
d73782fd JB |
225 | /* |
226 | * HW reconfiguration should never fail, the driver has told | |
227 | * us what it can support so it should live up to that promise. | |
228 | */ | |
229 | WARN_ON(ret); | |
230 | } | |
f0706e82 | 231 | |
b2c258fb JB |
232 | return ret; |
233 | } | |
f0706e82 | 234 | |
471b3efd JB |
235 | void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, |
236 | u32 changed) | |
d9430a32 | 237 | { |
471b3efd JB |
238 | struct ieee80211_local *local = sdata->local; |
239 | ||
7a725f73 JB |
240 | if (WARN_ON(sdata->vif.type == NL80211_IFTYPE_AP_VLAN)) |
241 | return; | |
242 | ||
471b3efd JB |
243 | if (!changed) |
244 | return; | |
245 | ||
246 | if (local->ops->bss_info_changed) | |
247 | local->ops->bss_info_changed(local_to_hw(local), | |
248 | &sdata->vif, | |
249 | &sdata->bss_conf, | |
250 | changed); | |
d9430a32 DD |
251 | } |
252 | ||
f698d856 | 253 | u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata) |
d9430a32 | 254 | { |
7a5158ef JB |
255 | sdata->bss_conf.use_cts_prot = false; |
256 | sdata->bss_conf.use_short_preamble = false; | |
257 | sdata->bss_conf.use_short_slot = false; | |
258 | return BSS_CHANGED_ERP_CTS_PROT | | |
259 | BSS_CHANGED_ERP_PREAMBLE | | |
260 | BSS_CHANGED_ERP_SLOT; | |
d9430a32 DD |
261 | } |
262 | ||
f0706e82 | 263 | void ieee80211_tx_status_irqsafe(struct ieee80211_hw *hw, |
e039fa4a | 264 | struct sk_buff *skb) |
f0706e82 JB |
265 | { |
266 | struct ieee80211_local *local = hw_to_local(hw); | |
e039fa4a | 267 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
f0706e82 JB |
268 | int tmp; |
269 | ||
270 | skb->dev = local->mdev; | |
f0706e82 | 271 | skb->pkt_type = IEEE80211_TX_STATUS_MSG; |
e039fa4a | 272 | skb_queue_tail(info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS ? |
f0706e82 JB |
273 | &local->skb_queue : &local->skb_queue_unreliable, skb); |
274 | tmp = skb_queue_len(&local->skb_queue) + | |
275 | skb_queue_len(&local->skb_queue_unreliable); | |
276 | while (tmp > IEEE80211_IRQSAFE_QUEUE_LIMIT && | |
277 | (skb = skb_dequeue(&local->skb_queue_unreliable))) { | |
f0706e82 JB |
278 | dev_kfree_skb_irq(skb); |
279 | tmp--; | |
280 | I802_DEBUG_INC(local->tx_status_drop); | |
281 | } | |
282 | tasklet_schedule(&local->tasklet); | |
283 | } | |
284 | EXPORT_SYMBOL(ieee80211_tx_status_irqsafe); | |
285 | ||
286 | static void ieee80211_tasklet_handler(unsigned long data) | |
287 | { | |
288 | struct ieee80211_local *local = (struct ieee80211_local *) data; | |
289 | struct sk_buff *skb; | |
290 | struct ieee80211_rx_status rx_status; | |
eadc8d9e | 291 | struct ieee80211_ra_tid *ra_tid; |
f0706e82 JB |
292 | |
293 | while ((skb = skb_dequeue(&local->skb_queue)) || | |
294 | (skb = skb_dequeue(&local->skb_queue_unreliable))) { | |
295 | switch (skb->pkt_type) { | |
296 | case IEEE80211_RX_MSG: | |
297 | /* status is in skb->cb */ | |
298 | memcpy(&rx_status, skb->cb, sizeof(rx_status)); | |
51fb61e7 | 299 | /* Clear skb->pkt_type in order to not confuse kernel |
f0706e82 JB |
300 | * netstack. */ |
301 | skb->pkt_type = 0; | |
302 | __ieee80211_rx(local_to_hw(local), skb, &rx_status); | |
303 | break; | |
304 | case IEEE80211_TX_STATUS_MSG: | |
f0706e82 | 305 | skb->pkt_type = 0; |
e039fa4a | 306 | ieee80211_tx_status(local_to_hw(local), skb); |
f0706e82 | 307 | break; |
eadc8d9e RR |
308 | case IEEE80211_DELBA_MSG: |
309 | ra_tid = (struct ieee80211_ra_tid *) &skb->cb; | |
310 | ieee80211_stop_tx_ba_cb(local_to_hw(local), | |
311 | ra_tid->ra, ra_tid->tid); | |
312 | dev_kfree_skb(skb); | |
313 | break; | |
314 | case IEEE80211_ADDBA_MSG: | |
315 | ra_tid = (struct ieee80211_ra_tid *) &skb->cb; | |
316 | ieee80211_start_tx_ba_cb(local_to_hw(local), | |
317 | ra_tid->ra, ra_tid->tid); | |
318 | dev_kfree_skb(skb); | |
319 | break ; | |
f4ea83dd JB |
320 | default: |
321 | WARN_ON(1); | |
f0706e82 JB |
322 | dev_kfree_skb(skb); |
323 | break; | |
324 | } | |
325 | } | |
326 | } | |
327 | ||
f0706e82 JB |
328 | /* Remove added headers (e.g., QoS control), encryption header/MIC, etc. to |
329 | * make a prepared TX frame (one that has been given to hw) to look like brand | |
330 | * new IEEE 802.11 frame that is ready to go through TX processing again. | |
d0f09804 | 331 | */ |
f0706e82 JB |
332 | static void ieee80211_remove_tx_extra(struct ieee80211_local *local, |
333 | struct ieee80211_key *key, | |
e039fa4a | 334 | struct sk_buff *skb) |
f0706e82 | 335 | { |
62bf1d76 HH |
336 | unsigned int hdrlen, iv_len, mic_len; |
337 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; | |
f0706e82 | 338 | |
62bf1d76 | 339 | hdrlen = ieee80211_hdrlen(hdr->frame_control); |
f0706e82 JB |
340 | |
341 | if (!key) | |
342 | goto no_key; | |
343 | ||
8f20fc24 | 344 | switch (key->conf.alg) { |
f0706e82 JB |
345 | case ALG_WEP: |
346 | iv_len = WEP_IV_LEN; | |
347 | mic_len = WEP_ICV_LEN; | |
348 | break; | |
349 | case ALG_TKIP: | |
350 | iv_len = TKIP_IV_LEN; | |
351 | mic_len = TKIP_ICV_LEN; | |
352 | break; | |
353 | case ALG_CCMP: | |
354 | iv_len = CCMP_HDR_LEN; | |
355 | mic_len = CCMP_MIC_LEN; | |
356 | break; | |
357 | default: | |
358 | goto no_key; | |
359 | } | |
360 | ||
62bf1d76 | 361 | if (skb->len >= hdrlen + mic_len && |
11a843b7 | 362 | !(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)) |
f0706e82 | 363 | skb_trim(skb, skb->len - mic_len); |
62bf1d76 | 364 | if (skb->len >= hdrlen + iv_len) { |
f0706e82 | 365 | memmove(skb->data + iv_len, skb->data, hdrlen); |
62bf1d76 | 366 | hdr = (struct ieee80211_hdr *)skb_pull(skb, iv_len); |
f0706e82 JB |
367 | } |
368 | ||
369 | no_key: | |
62bf1d76 HH |
370 | if (ieee80211_is_data_qos(hdr->frame_control)) { |
371 | hdr->frame_control &= ~cpu_to_le16(IEEE80211_STYPE_QOS_DATA); | |
372 | memmove(skb->data + IEEE80211_QOS_CTL_LEN, skb->data, | |
373 | hdrlen - IEEE80211_QOS_CTL_LEN); | |
374 | skb_pull(skb, IEEE80211_QOS_CTL_LEN); | |
f0706e82 JB |
375 | } |
376 | } | |
377 | ||
d46e144b JB |
378 | static void ieee80211_handle_filtered_frame(struct ieee80211_local *local, |
379 | struct sta_info *sta, | |
e039fa4a | 380 | struct sk_buff *skb) |
d46e144b | 381 | { |
e039fa4a JB |
382 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
383 | ||
d46e144b JB |
384 | sta->tx_filtered_count++; |
385 | ||
386 | /* | |
387 | * Clear the TX filter mask for this STA when sending the next | |
388 | * packet. If the STA went to power save mode, this will happen | |
f6d97104 | 389 | * when it wakes up for the next time. |
d46e144b | 390 | */ |
07346f81 | 391 | set_sta_flags(sta, WLAN_STA_CLEAR_PS_FILT); |
d46e144b JB |
392 | |
393 | /* | |
394 | * This code races in the following way: | |
395 | * | |
396 | * (1) STA sends frame indicating it will go to sleep and does so | |
397 | * (2) hardware/firmware adds STA to filter list, passes frame up | |
398 | * (3) hardware/firmware processes TX fifo and suppresses a frame | |
399 | * (4) we get TX status before having processed the frame and | |
400 | * knowing that the STA has gone to sleep. | |
401 | * | |
402 | * This is actually quite unlikely even when both those events are | |
403 | * processed from interrupts coming in quickly after one another or | |
404 | * even at the same time because we queue both TX status events and | |
405 | * RX frames to be processed by a tasklet and process them in the | |
406 | * same order that they were received or TX status last. Hence, there | |
407 | * is no race as long as the frame RX is processed before the next TX | |
408 | * status, which drivers can ensure, see below. | |
409 | * | |
410 | * Note that this can only happen if the hardware or firmware can | |
411 | * actually add STAs to the filter list, if this is done by the | |
412 | * driver in response to set_tim() (which will only reduce the race | |
413 | * this whole filtering tries to solve, not completely solve it) | |
414 | * this situation cannot happen. | |
415 | * | |
416 | * To completely solve this race drivers need to make sure that they | |
417 | * (a) don't mix the irq-safe/not irq-safe TX status/RX processing | |
418 | * functions and | |
419 | * (b) always process RX events before TX status events if ordering | |
420 | * can be unknown, for example with different interrupt status | |
421 | * bits. | |
422 | */ | |
07346f81 | 423 | if (test_sta_flags(sta, WLAN_STA_PS) && |
d46e144b | 424 | skb_queue_len(&sta->tx_filtered) < STA_MAX_TX_BUFFER) { |
e039fa4a | 425 | ieee80211_remove_tx_extra(local, sta->key, skb); |
d46e144b JB |
426 | skb_queue_tail(&sta->tx_filtered, skb); |
427 | return; | |
428 | } | |
429 | ||
07346f81 | 430 | if (!test_sta_flags(sta, WLAN_STA_PS) && |
e039fa4a | 431 | !(info->flags & IEEE80211_TX_CTL_REQUEUE)) { |
d46e144b | 432 | /* Software retry the packet once */ |
e039fa4a JB |
433 | info->flags |= IEEE80211_TX_CTL_REQUEUE; |
434 | ieee80211_remove_tx_extra(local, sta->key, skb); | |
d46e144b JB |
435 | dev_queue_xmit(skb); |
436 | return; | |
437 | } | |
438 | ||
f4ea83dd | 439 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
d46e144b JB |
440 | if (net_ratelimit()) |
441 | printk(KERN_DEBUG "%s: dropped TX filtered frame, " | |
442 | "queue_len=%d PS=%d @%lu\n", | |
443 | wiphy_name(local->hw.wiphy), | |
444 | skb_queue_len(&sta->tx_filtered), | |
07346f81 | 445 | !!test_sta_flags(sta, WLAN_STA_PS), jiffies); |
f4ea83dd | 446 | #endif |
d46e144b JB |
447 | dev_kfree_skb(skb); |
448 | } | |
449 | ||
e039fa4a | 450 | void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb) |
f0706e82 JB |
451 | { |
452 | struct sk_buff *skb2; | |
453 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; | |
454 | struct ieee80211_local *local = hw_to_local(hw); | |
e039fa4a | 455 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
f0706e82 | 456 | u16 frag, type; |
429a3805 | 457 | __le16 fc; |
4b7679a5 | 458 | struct ieee80211_supported_band *sband; |
b306f453 JB |
459 | struct ieee80211_tx_status_rtap_hdr *rthdr; |
460 | struct ieee80211_sub_if_data *sdata; | |
3d30d949 | 461 | struct net_device *prev_dev = NULL; |
429a3805 | 462 | struct sta_info *sta; |
f0706e82 | 463 | |
d0709a65 JB |
464 | rcu_read_lock(); |
465 | ||
95dac040 JB |
466 | sta = sta_info_get(local, hdr->addr1); |
467 | ||
468 | if (sta) { | |
469 | if (info->status.excessive_retries && | |
470 | test_sta_flags(sta, WLAN_STA_PS)) { | |
471 | /* | |
472 | * The STA is in power save mode, so assume | |
473 | * that this TX packet failed because of that. | |
474 | */ | |
475 | ieee80211_handle_filtered_frame(local, sta, skb); | |
476 | rcu_read_unlock(); | |
477 | return; | |
f0706e82 | 478 | } |
f0706e82 | 479 | |
95dac040 JB |
480 | fc = hdr->frame_control; |
481 | ||
482 | if ((info->flags & IEEE80211_TX_STAT_AMPDU_NO_BACK) && | |
483 | (ieee80211_is_data_qos(fc))) { | |
484 | u16 tid, ssn; | |
485 | u8 *qc; | |
429a3805 | 486 | |
429a3805 RR |
487 | qc = ieee80211_get_qos_ctl(hdr); |
488 | tid = qc[0] & 0xf; | |
489 | ssn = ((le16_to_cpu(hdr->seq_ctrl) + 0x10) | |
490 | & IEEE80211_SCTL_SEQ); | |
f698d856 | 491 | ieee80211_send_bar(sta->sdata, hdr->addr1, |
429a3805 RR |
492 | tid, ssn); |
493 | } | |
429a3805 | 494 | |
95dac040 | 495 | if (info->flags & IEEE80211_TX_STAT_TX_FILTERED) { |
e039fa4a | 496 | ieee80211_handle_filtered_frame(local, sta, skb); |
d0709a65 | 497 | rcu_read_unlock(); |
f0706e82 | 498 | return; |
95dac040 JB |
499 | } else { |
500 | if (info->status.excessive_retries) | |
501 | sta->tx_retry_failed++; | |
502 | sta->tx_retry_count += info->status.retry_count; | |
f0706e82 | 503 | } |
95dac040 | 504 | |
4b7679a5 JB |
505 | sband = local->hw.wiphy->bands[info->band]; |
506 | rate_control_tx_status(local, sband, sta, skb); | |
95dac040 | 507 | } |
f0706e82 | 508 | |
d0709a65 JB |
509 | rcu_read_unlock(); |
510 | ||
f0706e82 JB |
511 | ieee80211_led_tx(local, 0); |
512 | ||
513 | /* SNMP counters | |
514 | * Fragments are passed to low-level drivers as separate skbs, so these | |
515 | * are actually fragments, not frames. Update frame counters only for | |
516 | * the first fragment of the frame. */ | |
517 | ||
518 | frag = le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_FRAG; | |
519 | type = le16_to_cpu(hdr->frame_control) & IEEE80211_FCTL_FTYPE; | |
520 | ||
e039fa4a | 521 | if (info->flags & IEEE80211_TX_STAT_ACK) { |
f0706e82 JB |
522 | if (frag == 0) { |
523 | local->dot11TransmittedFrameCount++; | |
524 | if (is_multicast_ether_addr(hdr->addr1)) | |
525 | local->dot11MulticastTransmittedFrameCount++; | |
e039fa4a | 526 | if (info->status.retry_count > 0) |
f0706e82 | 527 | local->dot11RetryCount++; |
e039fa4a | 528 | if (info->status.retry_count > 1) |
f0706e82 JB |
529 | local->dot11MultipleRetryCount++; |
530 | } | |
531 | ||
532 | /* This counter shall be incremented for an acknowledged MPDU | |
533 | * with an individual address in the address 1 field or an MPDU | |
534 | * with a multicast address in the address 1 field of type Data | |
535 | * or Management. */ | |
536 | if (!is_multicast_ether_addr(hdr->addr1) || | |
537 | type == IEEE80211_FTYPE_DATA || | |
538 | type == IEEE80211_FTYPE_MGMT) | |
539 | local->dot11TransmittedFragmentCount++; | |
540 | } else { | |
541 | if (frag == 0) | |
542 | local->dot11FailedCount++; | |
543 | } | |
544 | ||
b306f453 JB |
545 | /* this was a transmitted frame, but now we want to reuse it */ |
546 | skb_orphan(skb); | |
547 | ||
3d30d949 MW |
548 | /* |
549 | * This is a bit racy but we can avoid a lot of work | |
550 | * with this test... | |
551 | */ | |
552 | if (!local->monitors && !local->cooked_mntrs) { | |
f0706e82 JB |
553 | dev_kfree_skb(skb); |
554 | return; | |
555 | } | |
556 | ||
b306f453 | 557 | /* send frame to monitor interfaces now */ |
f0706e82 | 558 | |
b306f453 JB |
559 | if (skb_headroom(skb) < sizeof(*rthdr)) { |
560 | printk(KERN_ERR "ieee80211_tx_status: headroom too small\n"); | |
f0706e82 JB |
561 | dev_kfree_skb(skb); |
562 | return; | |
563 | } | |
f0706e82 | 564 | |
988c0f72 | 565 | rthdr = (struct ieee80211_tx_status_rtap_hdr *) |
b306f453 JB |
566 | skb_push(skb, sizeof(*rthdr)); |
567 | ||
568 | memset(rthdr, 0, sizeof(*rthdr)); | |
569 | rthdr->hdr.it_len = cpu_to_le16(sizeof(*rthdr)); | |
570 | rthdr->hdr.it_present = | |
571 | cpu_to_le32((1 << IEEE80211_RADIOTAP_TX_FLAGS) | | |
572 | (1 << IEEE80211_RADIOTAP_DATA_RETRIES)); | |
573 | ||
e039fa4a | 574 | if (!(info->flags & IEEE80211_TX_STAT_ACK) && |
b306f453 JB |
575 | !is_multicast_ether_addr(hdr->addr1)) |
576 | rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_FAIL); | |
577 | ||
e039fa4a JB |
578 | if ((info->flags & IEEE80211_TX_CTL_USE_RTS_CTS) && |
579 | (info->flags & IEEE80211_TX_CTL_USE_CTS_PROTECT)) | |
b306f453 | 580 | rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_CTS); |
e039fa4a | 581 | else if (info->flags & IEEE80211_TX_CTL_USE_RTS_CTS) |
b306f453 JB |
582 | rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_RTS); |
583 | ||
e039fa4a | 584 | rthdr->data_retries = info->status.retry_count; |
b306f453 | 585 | |
3d30d949 MW |
586 | /* XXX: is this sufficient for BPF? */ |
587 | skb_set_mac_header(skb, 0); | |
588 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
589 | skb->pkt_type = PACKET_OTHERHOST; | |
590 | skb->protocol = htons(ETH_P_802_2); | |
591 | memset(skb->cb, 0, sizeof(skb->cb)); | |
592 | ||
79010420 | 593 | rcu_read_lock(); |
79010420 | 594 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { |
05c914fe | 595 | if (sdata->vif.type == NL80211_IFTYPE_MONITOR) { |
b306f453 JB |
596 | if (!netif_running(sdata->dev)) |
597 | continue; | |
3d30d949 MW |
598 | |
599 | if (prev_dev) { | |
79010420 | 600 | skb2 = skb_clone(skb, GFP_ATOMIC); |
3d30d949 MW |
601 | if (skb2) { |
602 | skb2->dev = prev_dev; | |
603 | netif_rx(skb2); | |
604 | } | |
605 | } | |
606 | ||
607 | prev_dev = sdata->dev; | |
b306f453 JB |
608 | } |
609 | } | |
3d30d949 MW |
610 | if (prev_dev) { |
611 | skb->dev = prev_dev; | |
612 | netif_rx(skb); | |
613 | skb = NULL; | |
614 | } | |
79010420 | 615 | rcu_read_unlock(); |
3d30d949 | 616 | dev_kfree_skb(skb); |
f0706e82 JB |
617 | } |
618 | EXPORT_SYMBOL(ieee80211_tx_status); | |
619 | ||
f0706e82 JB |
620 | struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len, |
621 | const struct ieee80211_ops *ops) | |
622 | { | |
f0706e82 | 623 | struct ieee80211_local *local; |
f0706e82 JB |
624 | int priv_size; |
625 | struct wiphy *wiphy; | |
626 | ||
627 | /* Ensure 32-byte alignment of our private data and hw private data. | |
628 | * We use the wiphy priv data for both our ieee80211_local and for | |
629 | * the driver's private data | |
630 | * | |
631 | * In memory it'll be like this: | |
632 | * | |
633 | * +-------------------------+ | |
634 | * | struct wiphy | | |
635 | * +-------------------------+ | |
636 | * | struct ieee80211_local | | |
637 | * +-------------------------+ | |
638 | * | driver's private data | | |
639 | * +-------------------------+ | |
640 | * | |
641 | */ | |
642 | priv_size = ((sizeof(struct ieee80211_local) + | |
643 | NETDEV_ALIGN_CONST) & ~NETDEV_ALIGN_CONST) + | |
644 | priv_data_len; | |
645 | ||
646 | wiphy = wiphy_new(&mac80211_config_ops, priv_size); | |
647 | ||
648 | if (!wiphy) | |
649 | return NULL; | |
650 | ||
651 | wiphy->privid = mac80211_wiphy_privid; | |
652 | ||
653 | local = wiphy_priv(wiphy); | |
654 | local->hw.wiphy = wiphy; | |
655 | ||
656 | local->hw.priv = (char *)local + | |
657 | ((sizeof(struct ieee80211_local) + | |
658 | NETDEV_ALIGN_CONST) & ~NETDEV_ALIGN_CONST); | |
659 | ||
4480f15c | 660 | BUG_ON(!ops->tx); |
4150c572 JB |
661 | BUG_ON(!ops->start); |
662 | BUG_ON(!ops->stop); | |
4480f15c JB |
663 | BUG_ON(!ops->config); |
664 | BUG_ON(!ops->add_interface); | |
4150c572 JB |
665 | BUG_ON(!ops->remove_interface); |
666 | BUG_ON(!ops->configure_filter); | |
f0706e82 JB |
667 | local->ops = ops; |
668 | ||
f0706e82 JB |
669 | local->hw.queues = 1; /* default */ |
670 | ||
f0706e82 JB |
671 | local->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD; |
672 | local->fragmentation_threshold = IEEE80211_MAX_FRAG_THRESHOLD; | |
673 | local->short_retry_limit = 7; | |
674 | local->long_retry_limit = 4; | |
675 | local->hw.conf.radio_enabled = 1; | |
f0706e82 | 676 | |
79010420 | 677 | INIT_LIST_HEAD(&local->interfaces); |
f0706e82 | 678 | |
b16bd15c JB |
679 | spin_lock_init(&local->key_lock); |
680 | ||
c2b13452 | 681 | INIT_DELAYED_WORK(&local->scan_work, ieee80211_scan_work); |
f0706e82 JB |
682 | |
683 | sta_info_init(local); | |
684 | ||
f0706e82 JB |
685 | tasklet_init(&local->tx_pending_tasklet, ieee80211_tx_pending, |
686 | (unsigned long)local); | |
687 | tasklet_disable(&local->tx_pending_tasklet); | |
688 | ||
689 | tasklet_init(&local->tasklet, | |
690 | ieee80211_tasklet_handler, | |
691 | (unsigned long) local); | |
692 | tasklet_disable(&local->tasklet); | |
693 | ||
694 | skb_queue_head_init(&local->skb_queue); | |
695 | skb_queue_head_init(&local->skb_queue_unreliable); | |
696 | ||
697 | return local_to_hw(local); | |
698 | } | |
699 | EXPORT_SYMBOL(ieee80211_alloc_hw); | |
700 | ||
701 | int ieee80211_register_hw(struct ieee80211_hw *hw) | |
702 | { | |
703 | struct ieee80211_local *local = hw_to_local(hw); | |
704 | const char *name; | |
705 | int result; | |
8318d78a | 706 | enum ieee80211_band band; |
96d51056 | 707 | struct net_device *mdev; |
133b8226 | 708 | struct ieee80211_master_priv *mpriv; |
8318d78a JB |
709 | |
710 | /* | |
711 | * generic code guarantees at least one band, | |
712 | * set this very early because much code assumes | |
713 | * that hw.conf.channel is assigned | |
714 | */ | |
715 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { | |
716 | struct ieee80211_supported_band *sband; | |
717 | ||
718 | sband = local->hw.wiphy->bands[band]; | |
719 | if (sband) { | |
720 | /* init channel we're on */ | |
721 | local->hw.conf.channel = | |
722 | local->oper_channel = | |
723 | local->scan_channel = &sband->channels[0]; | |
724 | break; | |
725 | } | |
726 | } | |
f0706e82 | 727 | |
f59ac048 LR |
728 | /* if low-level driver supports AP, we also support VLAN */ |
729 | if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) | |
730 | local->hw.wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP_VLAN); | |
731 | ||
732 | /* mac80211 always supports monitor */ | |
733 | local->hw.wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR); | |
734 | ||
f0706e82 JB |
735 | result = wiphy_register(local->hw.wiphy); |
736 | if (result < 0) | |
737 | return result; | |
738 | ||
e2530083 JB |
739 | /* |
740 | * We use the number of queues for feature tests (QoS, HT) internally | |
741 | * so restrict them appropriately. | |
742 | */ | |
e2530083 JB |
743 | if (hw->queues > IEEE80211_MAX_QUEUES) |
744 | hw->queues = IEEE80211_MAX_QUEUES; | |
745 | if (hw->ampdu_queues > IEEE80211_MAX_AMPDU_QUEUES) | |
746 | hw->ampdu_queues = IEEE80211_MAX_AMPDU_QUEUES; | |
747 | if (hw->queues < 4) | |
748 | hw->ampdu_queues = 0; | |
e2530083 | 749 | |
133b8226 | 750 | mdev = alloc_netdev_mq(sizeof(struct ieee80211_master_priv), |
e2530083 JB |
751 | "wmaster%d", ether_setup, |
752 | ieee80211_num_queues(hw)); | |
96d51056 JB |
753 | if (!mdev) |
754 | goto fail_mdev_alloc; | |
755 | ||
133b8226 JB |
756 | mpriv = netdev_priv(mdev); |
757 | mpriv->local = local; | |
96d51056 JB |
758 | local->mdev = mdev; |
759 | ||
3e122be0 | 760 | ieee80211_rx_bss_list_init(local); |
96d51056 JB |
761 | |
762 | mdev->hard_start_xmit = ieee80211_master_start_xmit; | |
763 | mdev->open = ieee80211_master_open; | |
764 | mdev->stop = ieee80211_master_stop; | |
765 | mdev->type = ARPHRD_IEEE80211; | |
766 | mdev->header_ops = &ieee80211_header_ops; | |
767 | mdev->set_multicast_list = ieee80211_master_set_multicast_list; | |
768 | ||
f0706e82 | 769 | name = wiphy_dev(local->hw.wiphy)->driver->name; |
59959a61 | 770 | local->hw.workqueue = create_freezeable_workqueue(name); |
f0706e82 JB |
771 | if (!local->hw.workqueue) { |
772 | result = -ENOMEM; | |
773 | goto fail_workqueue; | |
774 | } | |
775 | ||
b306f453 JB |
776 | /* |
777 | * The hardware needs headroom for sending the frame, | |
778 | * and we need some headroom for passing the frame to monitor | |
779 | * interfaces, but never both at the same time. | |
780 | */ | |
33ccad35 JB |
781 | local->tx_headroom = max_t(unsigned int , local->hw.extra_tx_headroom, |
782 | sizeof(struct ieee80211_tx_status_rtap_hdr)); | |
b306f453 | 783 | |
e9f207f0 JB |
784 | debugfs_hw_add(local); |
785 | ||
dc0ae30c TW |
786 | if (local->hw.conf.beacon_int < 10) |
787 | local->hw.conf.beacon_int = 100; | |
f0706e82 | 788 | |
ea95bba4 TW |
789 | if (local->hw.max_listen_interval == 0) |
790 | local->hw.max_listen_interval = 1; | |
791 | ||
792 | local->hw.conf.listen_interval = local->hw.max_listen_interval; | |
793 | ||
566bfe5a BR |
794 | local->wstats_flags |= local->hw.flags & (IEEE80211_HW_SIGNAL_UNSPEC | |
795 | IEEE80211_HW_SIGNAL_DB | | |
796 | IEEE80211_HW_SIGNAL_DBM) ? | |
f0706e82 | 797 | IW_QUAL_QUAL_UPDATED : IW_QUAL_QUAL_INVALID; |
566bfe5a | 798 | local->wstats_flags |= local->hw.flags & IEEE80211_HW_NOISE_DBM ? |
f0706e82 | 799 | IW_QUAL_NOISE_UPDATED : IW_QUAL_NOISE_INVALID; |
566bfe5a | 800 | if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM) |
f0706e82 JB |
801 | local->wstats_flags |= IW_QUAL_DBM; |
802 | ||
803 | result = sta_info_start(local); | |
804 | if (result < 0) | |
805 | goto fail_sta_info; | |
806 | ||
807 | rtnl_lock(); | |
808 | result = dev_alloc_name(local->mdev, local->mdev->name); | |
809 | if (result < 0) | |
810 | goto fail_dev; | |
811 | ||
812 | memcpy(local->mdev->dev_addr, local->hw.wiphy->perm_addr, ETH_ALEN); | |
813 | SET_NETDEV_DEV(local->mdev, wiphy_dev(local->hw.wiphy)); | |
814 | ||
815 | result = register_netdevice(local->mdev); | |
816 | if (result < 0) | |
817 | goto fail_dev; | |
818 | ||
830f9038 JB |
819 | result = ieee80211_init_rate_ctrl_alg(local, |
820 | hw->rate_control_algorithm); | |
f0706e82 JB |
821 | if (result < 0) { |
822 | printk(KERN_DEBUG "%s: Failed to initialize rate control " | |
dd1cd4c6 | 823 | "algorithm\n", wiphy_name(local->hw.wiphy)); |
f0706e82 JB |
824 | goto fail_rate; |
825 | } | |
826 | ||
827 | result = ieee80211_wep_init(local); | |
828 | ||
829 | if (result < 0) { | |
023a04be JF |
830 | printk(KERN_DEBUG "%s: Failed to initialize wep: %d\n", |
831 | wiphy_name(local->hw.wiphy), result); | |
f0706e82 JB |
832 | goto fail_wep; |
833 | } | |
834 | ||
51cb6db0 | 835 | local->mdev->select_queue = ieee80211_select_queue; |
f0706e82 JB |
836 | |
837 | /* add one default STA interface */ | |
3e122be0 | 838 | result = ieee80211_if_add(local, "wlan%d", NULL, |
05c914fe | 839 | NL80211_IFTYPE_STATION, NULL); |
f0706e82 JB |
840 | if (result) |
841 | printk(KERN_WARNING "%s: Failed to add default virtual iface\n", | |
dd1cd4c6 | 842 | wiphy_name(local->hw.wiphy)); |
f0706e82 | 843 | |
f0706e82 JB |
844 | rtnl_unlock(); |
845 | ||
846 | ieee80211_led_init(local); | |
847 | ||
848 | return 0; | |
849 | ||
850 | fail_wep: | |
851 | rate_control_deinitialize(local); | |
852 | fail_rate: | |
853 | unregister_netdevice(local->mdev); | |
339a7c41 | 854 | local->mdev = NULL; |
f0706e82 JB |
855 | fail_dev: |
856 | rtnl_unlock(); | |
857 | sta_info_stop(local); | |
858 | fail_sta_info: | |
e9f207f0 | 859 | debugfs_hw_del(local); |
f0706e82 JB |
860 | destroy_workqueue(local->hw.workqueue); |
861 | fail_workqueue: | |
3e122be0 JB |
862 | if (local->mdev) |
863 | free_netdev(local->mdev); | |
96d51056 | 864 | fail_mdev_alloc: |
f0706e82 JB |
865 | wiphy_unregister(local->hw.wiphy); |
866 | return result; | |
867 | } | |
868 | EXPORT_SYMBOL(ieee80211_register_hw); | |
869 | ||
f0706e82 JB |
870 | void ieee80211_unregister_hw(struct ieee80211_hw *hw) |
871 | { | |
872 | struct ieee80211_local *local = hw_to_local(hw); | |
f0706e82 JB |
873 | |
874 | tasklet_kill(&local->tx_pending_tasklet); | |
875 | tasklet_kill(&local->tasklet); | |
876 | ||
877 | rtnl_lock(); | |
878 | ||
79010420 JB |
879 | /* |
880 | * At this point, interface list manipulations are fine | |
881 | * because the driver cannot be handing us frames any | |
882 | * more and the tasklet is killed. | |
883 | */ | |
5b2812e9 | 884 | |
75636525 JB |
885 | /* First, we remove all virtual interfaces. */ |
886 | ieee80211_remove_interfaces(local); | |
5b2812e9 JB |
887 | |
888 | /* then, finally, remove the master interface */ | |
3e122be0 | 889 | unregister_netdevice(local->mdev); |
f0706e82 JB |
890 | |
891 | rtnl_unlock(); | |
892 | ||
3e122be0 | 893 | ieee80211_rx_bss_list_deinit(local); |
f0706e82 JB |
894 | ieee80211_clear_tx_pending(local); |
895 | sta_info_stop(local); | |
896 | rate_control_deinitialize(local); | |
e9f207f0 | 897 | debugfs_hw_del(local); |
f0706e82 | 898 | |
f0706e82 JB |
899 | if (skb_queue_len(&local->skb_queue) |
900 | || skb_queue_len(&local->skb_queue_unreliable)) | |
901 | printk(KERN_WARNING "%s: skb_queue not empty\n", | |
dd1cd4c6 | 902 | wiphy_name(local->hw.wiphy)); |
f0706e82 JB |
903 | skb_queue_purge(&local->skb_queue); |
904 | skb_queue_purge(&local->skb_queue_unreliable); | |
905 | ||
906 | destroy_workqueue(local->hw.workqueue); | |
907 | wiphy_unregister(local->hw.wiphy); | |
908 | ieee80211_wep_free(local); | |
909 | ieee80211_led_exit(local); | |
3e122be0 | 910 | free_netdev(local->mdev); |
f0706e82 JB |
911 | } |
912 | EXPORT_SYMBOL(ieee80211_unregister_hw); | |
913 | ||
914 | void ieee80211_free_hw(struct ieee80211_hw *hw) | |
915 | { | |
916 | struct ieee80211_local *local = hw_to_local(hw); | |
917 | ||
f0706e82 JB |
918 | wiphy_free(local->hw.wiphy); |
919 | } | |
920 | EXPORT_SYMBOL(ieee80211_free_hw); | |
921 | ||
f0706e82 JB |
922 | static int __init ieee80211_init(void) |
923 | { | |
924 | struct sk_buff *skb; | |
925 | int ret; | |
926 | ||
e039fa4a JB |
927 | BUILD_BUG_ON(sizeof(struct ieee80211_tx_info) > sizeof(skb->cb)); |
928 | BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, driver_data) + | |
c6a1fa12 | 929 | IEEE80211_TX_INFO_DRIVER_DATA_SIZE > sizeof(skb->cb)); |
f0706e82 | 930 | |
cccf129f FF |
931 | ret = rc80211_minstrel_init(); |
932 | if (ret) | |
933 | return ret; | |
934 | ||
4b475898 | 935 | ret = rc80211_pid_init(); |
ad018375 | 936 | if (ret) |
51cb6db0 | 937 | return ret; |
f0706e82 | 938 | |
e9f207f0 JB |
939 | ieee80211_debugfs_netdev_init(); |
940 | ||
f0706e82 JB |
941 | return 0; |
942 | } | |
943 | ||
f0706e82 JB |
944 | static void __exit ieee80211_exit(void) |
945 | { | |
4b475898 | 946 | rc80211_pid_exit(); |
cccf129f | 947 | rc80211_minstrel_exit(); |
ac71c691 | 948 | |
3b96766f JB |
949 | /* |
950 | * For key todo, it'll be empty by now but the work | |
951 | * might still be scheduled. | |
952 | */ | |
953 | flush_scheduled_work(); | |
954 | ||
f7a92144 LCC |
955 | if (mesh_allocated) |
956 | ieee80211s_stop(); | |
902acc78 | 957 | |
e9f207f0 | 958 | ieee80211_debugfs_netdev_exit(); |
f0706e82 JB |
959 | } |
960 | ||
961 | ||
ca9938fe | 962 | subsys_initcall(ieee80211_init); |
f0706e82 JB |
963 | module_exit(ieee80211_exit); |
964 | ||
965 | MODULE_DESCRIPTION("IEEE 802.11 subsystem"); | |
966 | MODULE_LICENSE("GPL"); |