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> |
10f644a4 | 24 | #include <linux/pm_qos_params.h> |
881d966b | 25 | #include <net/net_namespace.h> |
f0706e82 JB |
26 | #include <net/cfg80211.h> |
27 | ||
f0706e82 | 28 | #include "ieee80211_i.h" |
24487981 | 29 | #include "driver-ops.h" |
2c8dccc7 | 30 | #include "rate.h" |
f7a92144 | 31 | #include "mesh.h" |
f0706e82 | 32 | #include "wep.h" |
f0706e82 JB |
33 | #include "wme.h" |
34 | #include "aes_ccm.h" | |
2c8dccc7 | 35 | #include "led.h" |
e0eb6859 | 36 | #include "cfg.h" |
e9f207f0 JB |
37 | #include "debugfs.h" |
38 | #include "debugfs_netdev.h" | |
f0706e82 | 39 | |
b306f453 JB |
40 | /* |
41 | * For seeing transmitted packets on monitor interfaces | |
42 | * we have a radiotap header too. | |
43 | */ | |
44 | struct ieee80211_tx_status_rtap_hdr { | |
45 | struct ieee80211_radiotap_header hdr; | |
e6a9854b JB |
46 | u8 rate; |
47 | u8 padding_for_rate; | |
b306f453 JB |
48 | __le16 tx_flags; |
49 | u8 data_retries; | |
50 | } __attribute__ ((packed)); | |
51 | ||
f0706e82 | 52 | |
4150c572 | 53 | /* must be called under mdev tx lock */ |
0d143fe1 | 54 | void ieee80211_configure_filter(struct ieee80211_local *local) |
4150c572 JB |
55 | { |
56 | unsigned int changed_flags; | |
57 | unsigned int new_flags = 0; | |
58 | ||
53918994 | 59 | if (atomic_read(&local->iff_promiscs)) |
4150c572 JB |
60 | new_flags |= FIF_PROMISC_IN_BSS; |
61 | ||
53918994 | 62 | if (atomic_read(&local->iff_allmultis)) |
4150c572 JB |
63 | new_flags |= FIF_ALLMULTI; |
64 | ||
65 | if (local->monitors) | |
8cc9a739 MW |
66 | new_flags |= FIF_BCN_PRBRESP_PROMISC; |
67 | ||
68 | if (local->fif_fcsfail) | |
69 | new_flags |= FIF_FCSFAIL; | |
70 | ||
71 | if (local->fif_plcpfail) | |
72 | new_flags |= FIF_PLCPFAIL; | |
73 | ||
74 | if (local->fif_control) | |
75 | new_flags |= FIF_CONTROL; | |
76 | ||
77 | if (local->fif_other_bss) | |
78 | new_flags |= FIF_OTHER_BSS; | |
4150c572 JB |
79 | |
80 | changed_flags = local->filter_flags ^ new_flags; | |
81 | ||
82 | /* be a bit nasty */ | |
83 | new_flags |= (1<<31); | |
84 | ||
24487981 | 85 | drv_configure_filter(local, changed_flags, &new_flags, |
3b8d81e0 JB |
86 | local->mc_count, |
87 | local->mc_list); | |
4150c572 JB |
88 | |
89 | WARN_ON(new_flags & (1<<31)); | |
90 | ||
91 | local->filter_flags = new_flags & ~(1<<31); | |
92 | } | |
93 | ||
e8975581 | 94 | int ieee80211_hw_config(struct ieee80211_local *local, u32 changed) |
b2c258fb | 95 | { |
58905ca5 | 96 | struct ieee80211_channel *chan, *scan_chan; |
b2c258fb | 97 | int ret = 0; |
e8975581 | 98 | int power; |
094d05dc | 99 | enum nl80211_channel_type channel_type; |
f0706e82 | 100 | |
cb121bad JB |
101 | might_sleep(); |
102 | ||
58905ca5 JB |
103 | scan_chan = local->scan_channel; |
104 | ||
105 | if (scan_chan) { | |
106 | chan = scan_chan; | |
094d05dc | 107 | channel_type = NL80211_CHAN_NO_HT; |
72bdcf34 | 108 | } else { |
b2c258fb | 109 | chan = local->oper_channel; |
094d05dc | 110 | channel_type = local->oper_channel_type; |
72bdcf34 | 111 | } |
f0706e82 | 112 | |
72bdcf34 | 113 | if (chan != local->hw.conf.channel || |
4797938c | 114 | channel_type != local->hw.conf.channel_type) { |
e8975581 | 115 | local->hw.conf.channel = chan; |
4797938c | 116 | local->hw.conf.channel_type = channel_type; |
e8975581 JB |
117 | changed |= IEEE80211_CONF_CHANGE_CHANNEL; |
118 | } | |
8318d78a | 119 | |
58905ca5 | 120 | if (scan_chan) |
e8975581 | 121 | power = chan->max_power; |
8318d78a | 122 | else |
a8302de9 VT |
123 | power = local->power_constr_level ? |
124 | (chan->max_power - local->power_constr_level) : | |
125 | chan->max_power; | |
126 | ||
47afbaf5 | 127 | if (local->user_power_level >= 0) |
a8302de9 VT |
128 | power = min(power, local->user_power_level); |
129 | ||
e8975581 JB |
130 | if (local->hw.conf.power_level != power) { |
131 | changed |= IEEE80211_CONF_CHANGE_POWER; | |
132 | local->hw.conf.power_level = power; | |
133 | } | |
b2c258fb | 134 | |
e8975581 | 135 | if (changed && local->open_count) { |
24487981 | 136 | ret = drv_config(local, changed); |
d73782fd | 137 | /* |
447107fb | 138 | * Goal: |
d73782fd JB |
139 | * HW reconfiguration should never fail, the driver has told |
140 | * us what it can support so it should live up to that promise. | |
447107fb RC |
141 | * |
142 | * Current status: | |
143 | * rfkill is not integrated with mac80211 and a | |
144 | * configuration command can thus fail if hardware rfkill | |
145 | * is enabled | |
146 | * | |
147 | * FIXME: integrate rfkill with mac80211 and then add this | |
148 | * WARN_ON() back | |
149 | * | |
d73782fd | 150 | */ |
447107fb | 151 | /* WARN_ON(ret); */ |
d73782fd | 152 | } |
f0706e82 | 153 | |
b2c258fb JB |
154 | return ret; |
155 | } | |
f0706e82 | 156 | |
471b3efd JB |
157 | void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, |
158 | u32 changed) | |
d9430a32 | 159 | { |
471b3efd | 160 | struct ieee80211_local *local = sdata->local; |
9cef8737 | 161 | static const u8 zero[ETH_ALEN] = { 0 }; |
471b3efd JB |
162 | |
163 | if (!changed) | |
164 | return; | |
165 | ||
9cef8737 JB |
166 | if (sdata->vif.type == NL80211_IFTYPE_STATION) { |
167 | /* | |
168 | * While not associated, claim a BSSID of all-zeroes | |
169 | * so that drivers don't do any weird things with the | |
170 | * BSSID at that time. | |
171 | */ | |
172 | if (sdata->vif.bss_conf.assoc) | |
173 | sdata->vif.bss_conf.bssid = sdata->u.mgd.bssid; | |
174 | else | |
175 | sdata->vif.bss_conf.bssid = zero; | |
176 | } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) | |
2d0ddec5 JB |
177 | sdata->vif.bss_conf.bssid = sdata->u.ibss.bssid; |
178 | else if (sdata->vif.type == NL80211_IFTYPE_AP) | |
179 | sdata->vif.bss_conf.bssid = sdata->dev->dev_addr; | |
180 | else if (ieee80211_vif_is_mesh(&sdata->vif)) { | |
2d0ddec5 JB |
181 | sdata->vif.bss_conf.bssid = zero; |
182 | } else { | |
183 | WARN_ON(1); | |
184 | return; | |
185 | } | |
186 | ||
187 | switch (sdata->vif.type) { | |
188 | case NL80211_IFTYPE_AP: | |
189 | case NL80211_IFTYPE_ADHOC: | |
190 | case NL80211_IFTYPE_MESH_POINT: | |
191 | break; | |
192 | default: | |
193 | /* do not warn to simplify caller in scan.c */ | |
194 | changed &= ~BSS_CHANGED_BEACON_ENABLED; | |
195 | if (WARN_ON(changed & BSS_CHANGED_BEACON)) | |
196 | return; | |
197 | break; | |
198 | } | |
199 | ||
200 | if (changed & BSS_CHANGED_BEACON_ENABLED) { | |
fbe9c429 | 201 | if (test_bit(SCAN_SW_SCANNING, &local->scanning)) { |
2d0ddec5 JB |
202 | sdata->vif.bss_conf.enable_beacon = false; |
203 | } else { | |
204 | /* | |
205 | * Beacon should be enabled, but AP mode must | |
206 | * check whether there is a beacon configured. | |
207 | */ | |
208 | switch (sdata->vif.type) { | |
209 | case NL80211_IFTYPE_AP: | |
210 | sdata->vif.bss_conf.enable_beacon = | |
211 | !!rcu_dereference(sdata->u.ap.beacon); | |
212 | break; | |
213 | case NL80211_IFTYPE_ADHOC: | |
214 | sdata->vif.bss_conf.enable_beacon = | |
215 | !!rcu_dereference(sdata->u.ibss.presp); | |
216 | break; | |
217 | case NL80211_IFTYPE_MESH_POINT: | |
218 | sdata->vif.bss_conf.enable_beacon = true; | |
219 | break; | |
220 | default: | |
221 | /* not reached */ | |
222 | WARN_ON(1); | |
223 | break; | |
224 | } | |
225 | } | |
226 | } | |
227 | ||
24487981 JB |
228 | drv_bss_info_changed(local, &sdata->vif, |
229 | &sdata->vif.bss_conf, changed); | |
57c4d7b4 | 230 | |
e535c756 JB |
231 | /* DEPRECATED */ |
232 | local->hw.conf.beacon_int = sdata->vif.bss_conf.beacon_int; | |
d9430a32 DD |
233 | } |
234 | ||
f698d856 | 235 | u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata) |
d9430a32 | 236 | { |
bda3933a JB |
237 | sdata->vif.bss_conf.use_cts_prot = false; |
238 | sdata->vif.bss_conf.use_short_preamble = false; | |
239 | sdata->vif.bss_conf.use_short_slot = false; | |
7a5158ef JB |
240 | return BSS_CHANGED_ERP_CTS_PROT | |
241 | BSS_CHANGED_ERP_PREAMBLE | | |
242 | BSS_CHANGED_ERP_SLOT; | |
d9430a32 DD |
243 | } |
244 | ||
f0706e82 | 245 | void ieee80211_tx_status_irqsafe(struct ieee80211_hw *hw, |
e039fa4a | 246 | struct sk_buff *skb) |
f0706e82 JB |
247 | { |
248 | struct ieee80211_local *local = hw_to_local(hw); | |
e039fa4a | 249 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
f0706e82 JB |
250 | int tmp; |
251 | ||
f0706e82 | 252 | skb->pkt_type = IEEE80211_TX_STATUS_MSG; |
e039fa4a | 253 | skb_queue_tail(info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS ? |
f0706e82 JB |
254 | &local->skb_queue : &local->skb_queue_unreliable, skb); |
255 | tmp = skb_queue_len(&local->skb_queue) + | |
256 | skb_queue_len(&local->skb_queue_unreliable); | |
257 | while (tmp > IEEE80211_IRQSAFE_QUEUE_LIMIT && | |
258 | (skb = skb_dequeue(&local->skb_queue_unreliable))) { | |
f0706e82 JB |
259 | dev_kfree_skb_irq(skb); |
260 | tmp--; | |
261 | I802_DEBUG_INC(local->tx_status_drop); | |
262 | } | |
263 | tasklet_schedule(&local->tasklet); | |
264 | } | |
265 | EXPORT_SYMBOL(ieee80211_tx_status_irqsafe); | |
266 | ||
267 | static void ieee80211_tasklet_handler(unsigned long data) | |
268 | { | |
269 | struct ieee80211_local *local = (struct ieee80211_local *) data; | |
270 | struct sk_buff *skb; | |
eadc8d9e | 271 | struct ieee80211_ra_tid *ra_tid; |
f0706e82 JB |
272 | |
273 | while ((skb = skb_dequeue(&local->skb_queue)) || | |
274 | (skb = skb_dequeue(&local->skb_queue_unreliable))) { | |
275 | switch (skb->pkt_type) { | |
276 | case IEEE80211_RX_MSG: | |
51fb61e7 | 277 | /* Clear skb->pkt_type in order to not confuse kernel |
f0706e82 JB |
278 | * netstack. */ |
279 | skb->pkt_type = 0; | |
f1d58c25 | 280 | ieee80211_rx(local_to_hw(local), skb); |
f0706e82 JB |
281 | break; |
282 | case IEEE80211_TX_STATUS_MSG: | |
f0706e82 | 283 | skb->pkt_type = 0; |
e039fa4a | 284 | ieee80211_tx_status(local_to_hw(local), skb); |
f0706e82 | 285 | break; |
eadc8d9e RR |
286 | case IEEE80211_DELBA_MSG: |
287 | ra_tid = (struct ieee80211_ra_tid *) &skb->cb; | |
288 | ieee80211_stop_tx_ba_cb(local_to_hw(local), | |
289 | ra_tid->ra, ra_tid->tid); | |
290 | dev_kfree_skb(skb); | |
291 | break; | |
292 | case IEEE80211_ADDBA_MSG: | |
293 | ra_tid = (struct ieee80211_ra_tid *) &skb->cb; | |
294 | ieee80211_start_tx_ba_cb(local_to_hw(local), | |
295 | ra_tid->ra, ra_tid->tid); | |
296 | dev_kfree_skb(skb); | |
297 | break ; | |
f4ea83dd | 298 | default: |
5e3f3089 LF |
299 | WARN(1, "mac80211: Packet is of unknown type %d\n", |
300 | skb->pkt_type); | |
f0706e82 JB |
301 | dev_kfree_skb(skb); |
302 | break; | |
303 | } | |
304 | } | |
305 | } | |
306 | ||
d46e144b JB |
307 | static void ieee80211_handle_filtered_frame(struct ieee80211_local *local, |
308 | struct sta_info *sta, | |
e039fa4a | 309 | struct sk_buff *skb) |
d46e144b | 310 | { |
8f77f384 JB |
311 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
312 | ||
4da163ab JB |
313 | /* |
314 | * XXX: This is temporary! | |
315 | * | |
316 | * The problem here is that when we get here, the driver will | |
317 | * quite likely have pretty much overwritten info->control by | |
318 | * using info->driver_data or info->rate_driver_data. Thus, | |
319 | * when passing out the frame to the driver again, we would be | |
320 | * passing completely bogus data since the driver would then | |
321 | * expect a properly filled info->control. In mac80211 itself | |
322 | * the same problem occurs, since we need info->control.vif | |
323 | * internally. | |
324 | * | |
325 | * To fix this, we should send the frame through TX processing | |
326 | * again. However, it's not that simple, since the frame will | |
327 | * have been software-encrypted (if applicable) already, and | |
328 | * encrypting it again doesn't do much good. So to properly do | |
329 | * that, we not only have to skip the actual 'raw' encryption | |
330 | * (key selection etc. still has to be done!) but also the | |
331 | * sequence number assignment since that impacts the crypto | |
332 | * encapsulation, of course. | |
333 | * | |
334 | * Hence, for now, fix the bug by just dropping the frame. | |
335 | */ | |
336 | goto drop; | |
337 | ||
d46e144b JB |
338 | sta->tx_filtered_count++; |
339 | ||
340 | /* | |
341 | * Clear the TX filter mask for this STA when sending the next | |
342 | * packet. If the STA went to power save mode, this will happen | |
f6d97104 | 343 | * when it wakes up for the next time. |
d46e144b | 344 | */ |
07346f81 | 345 | set_sta_flags(sta, WLAN_STA_CLEAR_PS_FILT); |
d46e144b JB |
346 | |
347 | /* | |
348 | * This code races in the following way: | |
349 | * | |
350 | * (1) STA sends frame indicating it will go to sleep and does so | |
351 | * (2) hardware/firmware adds STA to filter list, passes frame up | |
352 | * (3) hardware/firmware processes TX fifo and suppresses a frame | |
353 | * (4) we get TX status before having processed the frame and | |
354 | * knowing that the STA has gone to sleep. | |
355 | * | |
356 | * This is actually quite unlikely even when both those events are | |
357 | * processed from interrupts coming in quickly after one another or | |
358 | * even at the same time because we queue both TX status events and | |
359 | * RX frames to be processed by a tasklet and process them in the | |
360 | * same order that they were received or TX status last. Hence, there | |
361 | * is no race as long as the frame RX is processed before the next TX | |
362 | * status, which drivers can ensure, see below. | |
363 | * | |
364 | * Note that this can only happen if the hardware or firmware can | |
365 | * actually add STAs to the filter list, if this is done by the | |
366 | * driver in response to set_tim() (which will only reduce the race | |
367 | * this whole filtering tries to solve, not completely solve it) | |
368 | * this situation cannot happen. | |
369 | * | |
370 | * To completely solve this race drivers need to make sure that they | |
371 | * (a) don't mix the irq-safe/not irq-safe TX status/RX processing | |
372 | * functions and | |
373 | * (b) always process RX events before TX status events if ordering | |
374 | * can be unknown, for example with different interrupt status | |
375 | * bits. | |
376 | */ | |
07346f81 | 377 | if (test_sta_flags(sta, WLAN_STA_PS) && |
d46e144b | 378 | skb_queue_len(&sta->tx_filtered) < STA_MAX_TX_BUFFER) { |
d46e144b JB |
379 | skb_queue_tail(&sta->tx_filtered, skb); |
380 | return; | |
381 | } | |
382 | ||
8f77f384 JB |
383 | if (!test_sta_flags(sta, WLAN_STA_PS) && |
384 | !(info->flags & IEEE80211_TX_INTFL_RETRIED)) { | |
d46e144b | 385 | /* Software retry the packet once */ |
8f77f384 JB |
386 | info->flags |= IEEE80211_TX_INTFL_RETRIED; |
387 | ieee80211_add_pending_skb(local, skb); | |
d46e144b JB |
388 | return; |
389 | } | |
390 | ||
4da163ab | 391 | drop: |
f4ea83dd | 392 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
d46e144b JB |
393 | if (net_ratelimit()) |
394 | printk(KERN_DEBUG "%s: dropped TX filtered frame, " | |
395 | "queue_len=%d PS=%d @%lu\n", | |
396 | wiphy_name(local->hw.wiphy), | |
397 | skb_queue_len(&sta->tx_filtered), | |
07346f81 | 398 | !!test_sta_flags(sta, WLAN_STA_PS), jiffies); |
f4ea83dd | 399 | #endif |
d46e144b JB |
400 | dev_kfree_skb(skb); |
401 | } | |
402 | ||
e039fa4a | 403 | void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb) |
f0706e82 JB |
404 | { |
405 | struct sk_buff *skb2; | |
406 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; | |
407 | struct ieee80211_local *local = hw_to_local(hw); | |
e039fa4a | 408 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
f0706e82 | 409 | u16 frag, type; |
429a3805 | 410 | __le16 fc; |
4b7679a5 | 411 | struct ieee80211_supported_band *sband; |
b306f453 JB |
412 | struct ieee80211_tx_status_rtap_hdr *rthdr; |
413 | struct ieee80211_sub_if_data *sdata; | |
3d30d949 | 414 | struct net_device *prev_dev = NULL; |
429a3805 | 415 | struct sta_info *sta; |
e6a9854b JB |
416 | int retry_count = -1, i; |
417 | ||
418 | for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) { | |
419 | /* the HW cannot have attempted that rate */ | |
420 | if (i >= hw->max_rates) { | |
421 | info->status.rates[i].idx = -1; | |
422 | info->status.rates[i].count = 0; | |
423 | } | |
424 | ||
425 | retry_count += info->status.rates[i].count; | |
426 | } | |
427 | if (retry_count < 0) | |
428 | retry_count = 0; | |
f0706e82 | 429 | |
d0709a65 JB |
430 | rcu_read_lock(); |
431 | ||
e6a9854b JB |
432 | sband = local->hw.wiphy->bands[info->band]; |
433 | ||
95dac040 JB |
434 | sta = sta_info_get(local, hdr->addr1); |
435 | ||
436 | if (sta) { | |
e6a9854b | 437 | if (!(info->flags & IEEE80211_TX_STAT_ACK) && |
95dac040 JB |
438 | test_sta_flags(sta, WLAN_STA_PS)) { |
439 | /* | |
440 | * The STA is in power save mode, so assume | |
441 | * that this TX packet failed because of that. | |
442 | */ | |
443 | ieee80211_handle_filtered_frame(local, sta, skb); | |
444 | rcu_read_unlock(); | |
445 | return; | |
f0706e82 | 446 | } |
f0706e82 | 447 | |
95dac040 JB |
448 | fc = hdr->frame_control; |
449 | ||
450 | if ((info->flags & IEEE80211_TX_STAT_AMPDU_NO_BACK) && | |
451 | (ieee80211_is_data_qos(fc))) { | |
452 | u16 tid, ssn; | |
453 | u8 *qc; | |
429a3805 | 454 | |
429a3805 RR |
455 | qc = ieee80211_get_qos_ctl(hdr); |
456 | tid = qc[0] & 0xf; | |
457 | ssn = ((le16_to_cpu(hdr->seq_ctrl) + 0x10) | |
458 | & IEEE80211_SCTL_SEQ); | |
f698d856 | 459 | ieee80211_send_bar(sta->sdata, hdr->addr1, |
429a3805 RR |
460 | tid, ssn); |
461 | } | |
429a3805 | 462 | |
95dac040 | 463 | if (info->flags & IEEE80211_TX_STAT_TX_FILTERED) { |
e039fa4a | 464 | ieee80211_handle_filtered_frame(local, sta, skb); |
d0709a65 | 465 | rcu_read_unlock(); |
f0706e82 | 466 | return; |
95dac040 | 467 | } else { |
e6a9854b | 468 | if (!(info->flags & IEEE80211_TX_STAT_ACK)) |
95dac040 | 469 | sta->tx_retry_failed++; |
e6a9854b | 470 | sta->tx_retry_count += retry_count; |
f0706e82 | 471 | } |
95dac040 | 472 | |
4b7679a5 | 473 | rate_control_tx_status(local, sband, sta, skb); |
95dac040 | 474 | } |
f0706e82 | 475 | |
d0709a65 JB |
476 | rcu_read_unlock(); |
477 | ||
f0706e82 JB |
478 | ieee80211_led_tx(local, 0); |
479 | ||
480 | /* SNMP counters | |
481 | * Fragments are passed to low-level drivers as separate skbs, so these | |
482 | * are actually fragments, not frames. Update frame counters only for | |
483 | * the first fragment of the frame. */ | |
484 | ||
485 | frag = le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_FRAG; | |
486 | type = le16_to_cpu(hdr->frame_control) & IEEE80211_FCTL_FTYPE; | |
487 | ||
e039fa4a | 488 | if (info->flags & IEEE80211_TX_STAT_ACK) { |
f0706e82 JB |
489 | if (frag == 0) { |
490 | local->dot11TransmittedFrameCount++; | |
491 | if (is_multicast_ether_addr(hdr->addr1)) | |
492 | local->dot11MulticastTransmittedFrameCount++; | |
e6a9854b | 493 | if (retry_count > 0) |
f0706e82 | 494 | local->dot11RetryCount++; |
e6a9854b | 495 | if (retry_count > 1) |
f0706e82 JB |
496 | local->dot11MultipleRetryCount++; |
497 | } | |
498 | ||
499 | /* This counter shall be incremented for an acknowledged MPDU | |
500 | * with an individual address in the address 1 field or an MPDU | |
501 | * with a multicast address in the address 1 field of type Data | |
502 | * or Management. */ | |
503 | if (!is_multicast_ether_addr(hdr->addr1) || | |
504 | type == IEEE80211_FTYPE_DATA || | |
505 | type == IEEE80211_FTYPE_MGMT) | |
506 | local->dot11TransmittedFragmentCount++; | |
507 | } else { | |
508 | if (frag == 0) | |
509 | local->dot11FailedCount++; | |
510 | } | |
511 | ||
b306f453 JB |
512 | /* this was a transmitted frame, but now we want to reuse it */ |
513 | skb_orphan(skb); | |
514 | ||
3d30d949 MW |
515 | /* |
516 | * This is a bit racy but we can avoid a lot of work | |
517 | * with this test... | |
518 | */ | |
519 | if (!local->monitors && !local->cooked_mntrs) { | |
f0706e82 JB |
520 | dev_kfree_skb(skb); |
521 | return; | |
522 | } | |
523 | ||
b306f453 | 524 | /* send frame to monitor interfaces now */ |
f0706e82 | 525 | |
b306f453 JB |
526 | if (skb_headroom(skb) < sizeof(*rthdr)) { |
527 | printk(KERN_ERR "ieee80211_tx_status: headroom too small\n"); | |
f0706e82 JB |
528 | dev_kfree_skb(skb); |
529 | return; | |
530 | } | |
f0706e82 | 531 | |
988c0f72 | 532 | rthdr = (struct ieee80211_tx_status_rtap_hdr *) |
b306f453 JB |
533 | skb_push(skb, sizeof(*rthdr)); |
534 | ||
535 | memset(rthdr, 0, sizeof(*rthdr)); | |
536 | rthdr->hdr.it_len = cpu_to_le16(sizeof(*rthdr)); | |
537 | rthdr->hdr.it_present = | |
538 | cpu_to_le32((1 << IEEE80211_RADIOTAP_TX_FLAGS) | | |
e6a9854b JB |
539 | (1 << IEEE80211_RADIOTAP_DATA_RETRIES) | |
540 | (1 << IEEE80211_RADIOTAP_RATE)); | |
b306f453 | 541 | |
e039fa4a | 542 | if (!(info->flags & IEEE80211_TX_STAT_ACK) && |
b306f453 JB |
543 | !is_multicast_ether_addr(hdr->addr1)) |
544 | rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_FAIL); | |
545 | ||
e6a9854b JB |
546 | /* |
547 | * XXX: Once radiotap gets the bitmap reset thing the vendor | |
548 | * extensions proposal contains, we can actually report | |
549 | * the whole set of tries we did. | |
550 | */ | |
551 | if ((info->status.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) || | |
552 | (info->status.rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT)) | |
b306f453 | 553 | rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_CTS); |
e6a9854b | 554 | else if (info->status.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) |
b306f453 | 555 | rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_RTS); |
e6a9854b JB |
556 | if (info->status.rates[0].idx >= 0 && |
557 | !(info->status.rates[0].flags & IEEE80211_TX_RC_MCS)) | |
558 | rthdr->rate = sband->bitrates[ | |
559 | info->status.rates[0].idx].bitrate / 5; | |
b306f453 | 560 | |
e6a9854b JB |
561 | /* for now report the total retry_count */ |
562 | rthdr->data_retries = retry_count; | |
b306f453 | 563 | |
3d30d949 MW |
564 | /* XXX: is this sufficient for BPF? */ |
565 | skb_set_mac_header(skb, 0); | |
566 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
567 | skb->pkt_type = PACKET_OTHERHOST; | |
568 | skb->protocol = htons(ETH_P_802_2); | |
569 | memset(skb->cb, 0, sizeof(skb->cb)); | |
570 | ||
79010420 | 571 | rcu_read_lock(); |
79010420 | 572 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { |
05c914fe | 573 | if (sdata->vif.type == NL80211_IFTYPE_MONITOR) { |
b306f453 JB |
574 | if (!netif_running(sdata->dev)) |
575 | continue; | |
3d30d949 MW |
576 | |
577 | if (prev_dev) { | |
79010420 | 578 | skb2 = skb_clone(skb, GFP_ATOMIC); |
3d30d949 MW |
579 | if (skb2) { |
580 | skb2->dev = prev_dev; | |
581 | netif_rx(skb2); | |
582 | } | |
583 | } | |
584 | ||
585 | prev_dev = sdata->dev; | |
b306f453 JB |
586 | } |
587 | } | |
3d30d949 MW |
588 | if (prev_dev) { |
589 | skb->dev = prev_dev; | |
590 | netif_rx(skb); | |
591 | skb = NULL; | |
592 | } | |
79010420 | 593 | rcu_read_unlock(); |
3d30d949 | 594 | dev_kfree_skb(skb); |
f0706e82 JB |
595 | } |
596 | EXPORT_SYMBOL(ieee80211_tx_status); | |
597 | ||
f2753ddb JB |
598 | static void ieee80211_restart_work(struct work_struct *work) |
599 | { | |
600 | struct ieee80211_local *local = | |
601 | container_of(work, struct ieee80211_local, restart_work); | |
602 | ||
603 | rtnl_lock(); | |
604 | ieee80211_reconfig(local); | |
605 | rtnl_unlock(); | |
606 | } | |
607 | ||
608 | void ieee80211_restart_hw(struct ieee80211_hw *hw) | |
609 | { | |
610 | struct ieee80211_local *local = hw_to_local(hw); | |
611 | ||
612 | /* use this reason, __ieee80211_resume will unblock it */ | |
613 | ieee80211_stop_queues_by_reason(hw, | |
614 | IEEE80211_QUEUE_STOP_REASON_SUSPEND); | |
615 | ||
616 | schedule_work(&local->restart_work); | |
617 | } | |
618 | EXPORT_SYMBOL(ieee80211_restart_hw); | |
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; |
96f5e66e | 624 | int priv_size, i; |
f0706e82 JB |
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 | */ | |
1ce8e7b5 | 642 | priv_size = ALIGN(sizeof(*local), NETDEV_ALIGN) + priv_data_len; |
f0706e82 JB |
643 | |
644 | wiphy = wiphy_new(&mac80211_config_ops, priv_size); | |
645 | ||
646 | if (!wiphy) | |
647 | return NULL; | |
648 | ||
a272a720 | 649 | wiphy->netnsok = true; |
f0706e82 | 650 | wiphy->privid = mac80211_wiphy_privid; |
18a83659 | 651 | |
00d3f14c JB |
652 | /* Yes, putting cfg80211_bss into ieee80211_bss is a hack */ |
653 | wiphy->bss_priv_size = sizeof(struct ieee80211_bss) - | |
654 | sizeof(struct cfg80211_bss); | |
f0706e82 JB |
655 | |
656 | local = wiphy_priv(wiphy); | |
de95a54b | 657 | |
f0706e82 JB |
658 | local->hw.wiphy = wiphy; |
659 | ||
1ce8e7b5 | 660 | local->hw.priv = (char *)local + ALIGN(sizeof(*local), NETDEV_ALIGN); |
f0706e82 | 661 | |
4480f15c | 662 | BUG_ON(!ops->tx); |
4150c572 JB |
663 | BUG_ON(!ops->start); |
664 | BUG_ON(!ops->stop); | |
4480f15c JB |
665 | BUG_ON(!ops->config); |
666 | BUG_ON(!ops->add_interface); | |
4150c572 JB |
667 | BUG_ON(!ops->remove_interface); |
668 | BUG_ON(!ops->configure_filter); | |
f0706e82 JB |
669 | local->ops = ops; |
670 | ||
e6a9854b JB |
671 | /* set up some defaults */ |
672 | local->hw.queues = 1; | |
673 | local->hw.max_rates = 1; | |
b9a5f8ca JM |
674 | local->hw.conf.long_frame_max_tx_count = wiphy->retry_long; |
675 | local->hw.conf.short_frame_max_tx_count = wiphy->retry_short; | |
e8975581 | 676 | local->hw.conf.radio_enabled = true; |
c428c892 | 677 | local->user_power_level = -1; |
f0706e82 | 678 | |
79010420 | 679 | INIT_LIST_HEAD(&local->interfaces); |
c771c9d8 | 680 | mutex_init(&local->iflist_mtx); |
f3b85252 | 681 | mutex_init(&local->scan_mtx); |
f0706e82 | 682 | |
b16bd15c | 683 | spin_lock_init(&local->key_lock); |
3b8d81e0 | 684 | spin_lock_init(&local->filter_lock); |
ce7c9111 KV |
685 | spin_lock_init(&local->queue_stop_reason_lock); |
686 | ||
c2b13452 | 687 | INIT_DELAYED_WORK(&local->scan_work, ieee80211_scan_work); |
f0706e82 | 688 | |
f2753ddb JB |
689 | INIT_WORK(&local->restart_work, ieee80211_restart_work); |
690 | ||
520eb820 KV |
691 | INIT_WORK(&local->dynamic_ps_enable_work, |
692 | ieee80211_dynamic_ps_enable_work); | |
693 | INIT_WORK(&local->dynamic_ps_disable_work, | |
694 | ieee80211_dynamic_ps_disable_work); | |
695 | setup_timer(&local->dynamic_ps_timer, | |
696 | ieee80211_dynamic_ps_timer, (unsigned long) local); | |
697 | ||
f0706e82 JB |
698 | sta_info_init(local); |
699 | ||
2a577d98 JB |
700 | for (i = 0; i < IEEE80211_MAX_QUEUES; i++) |
701 | skb_queue_head_init(&local->pending[i]); | |
f0706e82 JB |
702 | tasklet_init(&local->tx_pending_tasklet, ieee80211_tx_pending, |
703 | (unsigned long)local); | |
704 | tasklet_disable(&local->tx_pending_tasklet); | |
705 | ||
706 | tasklet_init(&local->tasklet, | |
707 | ieee80211_tasklet_handler, | |
708 | (unsigned long) local); | |
709 | tasklet_disable(&local->tasklet); | |
710 | ||
711 | skb_queue_head_init(&local->skb_queue); | |
712 | skb_queue_head_init(&local->skb_queue_unreliable); | |
713 | ||
cd8ffc80 JB |
714 | spin_lock_init(&local->ampdu_lock); |
715 | ||
f0706e82 JB |
716 | return local_to_hw(local); |
717 | } | |
718 | EXPORT_SYMBOL(ieee80211_alloc_hw); | |
719 | ||
720 | int ieee80211_register_hw(struct ieee80211_hw *hw) | |
721 | { | |
722 | struct ieee80211_local *local = hw_to_local(hw); | |
f0706e82 | 723 | int result; |
8318d78a | 724 | enum ieee80211_band band; |
de95a54b | 725 | int channels, i, j, max_bitrates; |
5ef2d41a | 726 | bool supp_ht; |
25e47c18 JB |
727 | static const u32 cipher_suites[] = { |
728 | WLAN_CIPHER_SUITE_WEP40, | |
729 | WLAN_CIPHER_SUITE_WEP104, | |
730 | WLAN_CIPHER_SUITE_TKIP, | |
731 | WLAN_CIPHER_SUITE_CCMP, | |
732 | ||
733 | /* keep last -- depends on hw flags! */ | |
734 | WLAN_CIPHER_SUITE_AES_CMAC | |
735 | }; | |
8318d78a JB |
736 | |
737 | /* | |
738 | * generic code guarantees at least one band, | |
739 | * set this very early because much code assumes | |
740 | * that hw.conf.channel is assigned | |
741 | */ | |
2a519311 | 742 | channels = 0; |
de95a54b | 743 | max_bitrates = 0; |
5ef2d41a | 744 | supp_ht = false; |
8318d78a JB |
745 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { |
746 | struct ieee80211_supported_band *sband; | |
747 | ||
748 | sband = local->hw.wiphy->bands[band]; | |
de95a54b JB |
749 | if (!sband) |
750 | continue; | |
751 | if (!local->oper_channel) { | |
8318d78a JB |
752 | /* init channel we're on */ |
753 | local->hw.conf.channel = | |
58905ca5 JB |
754 | local->oper_channel = &sband->channels[0]; |
755 | local->hw.conf.channel_type = NL80211_CHAN_NO_HT; | |
8318d78a | 756 | } |
de95a54b JB |
757 | channels += sband->n_channels; |
758 | ||
759 | if (max_bitrates < sband->n_bitrates) | |
760 | max_bitrates = sband->n_bitrates; | |
5ef2d41a | 761 | supp_ht = supp_ht || sband->ht_cap.ht_supported; |
8318d78a | 762 | } |
f0706e82 | 763 | |
2a519311 JB |
764 | local->int_scan_req.n_channels = channels; |
765 | local->int_scan_req.channels = kzalloc(sizeof(void *) * channels, GFP_KERNEL); | |
766 | if (!local->int_scan_req.channels) | |
767 | return -ENOMEM; | |
768 | ||
f59ac048 LR |
769 | /* if low-level driver supports AP, we also support VLAN */ |
770 | if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) | |
771 | local->hw.wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP_VLAN); | |
772 | ||
773 | /* mac80211 always supports monitor */ | |
774 | local->hw.wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR); | |
775 | ||
77965c97 JB |
776 | if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM) |
777 | local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM; | |
778 | else if (local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC) | |
779 | local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC; | |
780 | ||
de95a54b JB |
781 | /* |
782 | * Calculate scan IE length -- we need this to alloc | |
783 | * memory and to subtract from the driver limit. It | |
784 | * includes the (extended) supported rates and HT | |
785 | * information -- SSID is the driver's responsibility. | |
786 | */ | |
787 | local->scan_ies_len = 4 + max_bitrates; /* (ext) supp rates */ | |
5ef2d41a JB |
788 | if (supp_ht) |
789 | local->scan_ies_len += 2 + sizeof(struct ieee80211_ht_cap); | |
de95a54b JB |
790 | |
791 | if (!local->ops->hw_scan) { | |
792 | /* For hw_scan, driver needs to set these up. */ | |
793 | local->hw.wiphy->max_scan_ssids = 4; | |
794 | local->hw.wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN; | |
795 | } | |
796 | ||
797 | /* | |
798 | * If the driver supports any scan IEs, then assume the | |
799 | * limit includes the IEs mac80211 will add, otherwise | |
800 | * leave it at zero and let the driver sort it out; we | |
801 | * still pass our IEs to the driver but userspace will | |
802 | * not be allowed to in that case. | |
803 | */ | |
804 | if (local->hw.wiphy->max_scan_ie_len) | |
805 | local->hw.wiphy->max_scan_ie_len -= local->scan_ies_len; | |
806 | ||
25e47c18 JB |
807 | local->hw.wiphy->cipher_suites = cipher_suites; |
808 | local->hw.wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites); | |
809 | if (!(local->hw.flags & IEEE80211_HW_MFP_CAPABLE)) | |
810 | local->hw.wiphy->n_cipher_suites--; | |
811 | ||
f0706e82 JB |
812 | result = wiphy_register(local->hw.wiphy); |
813 | if (result < 0) | |
2a519311 | 814 | goto fail_wiphy_register; |
f0706e82 | 815 | |
e2530083 JB |
816 | /* |
817 | * We use the number of queues for feature tests (QoS, HT) internally | |
818 | * so restrict them appropriately. | |
819 | */ | |
e2530083 JB |
820 | if (hw->queues > IEEE80211_MAX_QUEUES) |
821 | hw->queues = IEEE80211_MAX_QUEUES; | |
e2530083 | 822 | |
4ada424d | 823 | local->hw.workqueue = |
30d3ef41 | 824 | create_singlethread_workqueue(wiphy_name(local->hw.wiphy)); |
f0706e82 JB |
825 | if (!local->hw.workqueue) { |
826 | result = -ENOMEM; | |
827 | goto fail_workqueue; | |
828 | } | |
829 | ||
b306f453 JB |
830 | /* |
831 | * The hardware needs headroom for sending the frame, | |
832 | * and we need some headroom for passing the frame to monitor | |
833 | * interfaces, but never both at the same time. | |
834 | */ | |
33ccad35 JB |
835 | local->tx_headroom = max_t(unsigned int , local->hw.extra_tx_headroom, |
836 | sizeof(struct ieee80211_tx_status_rtap_hdr)); | |
b306f453 | 837 | |
e9f207f0 JB |
838 | debugfs_hw_add(local); |
839 | ||
ea95bba4 TW |
840 | if (local->hw.max_listen_interval == 0) |
841 | local->hw.max_listen_interval = 1; | |
842 | ||
843 | local->hw.conf.listen_interval = local->hw.max_listen_interval; | |
844 | ||
f0706e82 JB |
845 | result = sta_info_start(local); |
846 | if (result < 0) | |
847 | goto fail_sta_info; | |
848 | ||
d4c4a9a1 AJ |
849 | result = ieee80211_wep_init(local); |
850 | if (result < 0) { | |
851 | printk(KERN_DEBUG "%s: Failed to initialize wep: %d\n", | |
852 | wiphy_name(local->hw.wiphy), result); | |
853 | goto fail_wep; | |
854 | } | |
855 | ||
f0706e82 | 856 | rtnl_lock(); |
f0706e82 | 857 | |
830f9038 JB |
858 | result = ieee80211_init_rate_ctrl_alg(local, |
859 | hw->rate_control_algorithm); | |
f0706e82 JB |
860 | if (result < 0) { |
861 | printk(KERN_DEBUG "%s: Failed to initialize rate control " | |
dd1cd4c6 | 862 | "algorithm\n", wiphy_name(local->hw.wiphy)); |
f0706e82 JB |
863 | goto fail_rate; |
864 | } | |
865 | ||
8dffff21 JB |
866 | /* add one default STA interface if supported */ |
867 | if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_STATION)) { | |
868 | result = ieee80211_if_add(local, "wlan%d", NULL, | |
869 | NL80211_IFTYPE_STATION, NULL); | |
870 | if (result) | |
871 | printk(KERN_WARNING "%s: Failed to add default virtual iface\n", | |
872 | wiphy_name(local->hw.wiphy)); | |
873 | } | |
f0706e82 | 874 | |
f0706e82 JB |
875 | rtnl_unlock(); |
876 | ||
877 | ieee80211_led_init(local); | |
878 | ||
2a519311 JB |
879 | /* alloc internal scan request */ |
880 | i = 0; | |
881 | local->int_scan_req.ssids = &local->scan_ssid; | |
882 | local->int_scan_req.n_ssids = 1; | |
883 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { | |
884 | if (!hw->wiphy->bands[band]) | |
885 | continue; | |
886 | for (j = 0; j < hw->wiphy->bands[band]->n_channels; j++) { | |
887 | local->int_scan_req.channels[i] = | |
888 | &hw->wiphy->bands[band]->channels[j]; | |
889 | i++; | |
890 | } | |
891 | } | |
892 | ||
10f644a4 JB |
893 | local->network_latency_notifier.notifier_call = |
894 | ieee80211_max_network_latency; | |
895 | result = pm_qos_add_notifier(PM_QOS_NETWORK_LATENCY, | |
896 | &local->network_latency_notifier); | |
897 | ||
898 | if (result) { | |
899 | rtnl_lock(); | |
900 | goto fail_pm_qos; | |
901 | } | |
902 | ||
f0706e82 JB |
903 | return 0; |
904 | ||
10f644a4 JB |
905 | fail_pm_qos: |
906 | ieee80211_led_exit(local); | |
907 | ieee80211_remove_interfaces(local); | |
10f644a4 | 908 | fail_rate: |
f0706e82 | 909 | rtnl_unlock(); |
d4c4a9a1 | 910 | ieee80211_wep_free(local); |
aba74530 | 911 | fail_wep: |
f0706e82 | 912 | sta_info_stop(local); |
10f644a4 | 913 | fail_sta_info: |
e9f207f0 | 914 | debugfs_hw_del(local); |
f0706e82 | 915 | destroy_workqueue(local->hw.workqueue); |
10f644a4 | 916 | fail_workqueue: |
f0706e82 | 917 | wiphy_unregister(local->hw.wiphy); |
10f644a4 | 918 | fail_wiphy_register: |
2a519311 | 919 | kfree(local->int_scan_req.channels); |
f0706e82 JB |
920 | return result; |
921 | } | |
922 | EXPORT_SYMBOL(ieee80211_register_hw); | |
923 | ||
f0706e82 JB |
924 | void ieee80211_unregister_hw(struct ieee80211_hw *hw) |
925 | { | |
926 | struct ieee80211_local *local = hw_to_local(hw); | |
f0706e82 JB |
927 | |
928 | tasklet_kill(&local->tx_pending_tasklet); | |
929 | tasklet_kill(&local->tasklet); | |
930 | ||
10f644a4 JB |
931 | pm_qos_remove_notifier(PM_QOS_NETWORK_LATENCY, |
932 | &local->network_latency_notifier); | |
933 | ||
f0706e82 JB |
934 | rtnl_lock(); |
935 | ||
79010420 JB |
936 | /* |
937 | * At this point, interface list manipulations are fine | |
938 | * because the driver cannot be handing us frames any | |
939 | * more and the tasklet is killed. | |
940 | */ | |
75636525 | 941 | ieee80211_remove_interfaces(local); |
5b2812e9 | 942 | |
f0706e82 JB |
943 | rtnl_unlock(); |
944 | ||
f0706e82 JB |
945 | ieee80211_clear_tx_pending(local); |
946 | sta_info_stop(local); | |
947 | rate_control_deinitialize(local); | |
e9f207f0 | 948 | debugfs_hw_del(local); |
f0706e82 | 949 | |
f0706e82 JB |
950 | if (skb_queue_len(&local->skb_queue) |
951 | || skb_queue_len(&local->skb_queue_unreliable)) | |
952 | printk(KERN_WARNING "%s: skb_queue not empty\n", | |
dd1cd4c6 | 953 | wiphy_name(local->hw.wiphy)); |
f0706e82 JB |
954 | skb_queue_purge(&local->skb_queue); |
955 | skb_queue_purge(&local->skb_queue_unreliable); | |
956 | ||
957 | destroy_workqueue(local->hw.workqueue); | |
958 | wiphy_unregister(local->hw.wiphy); | |
959 | ieee80211_wep_free(local); | |
960 | ieee80211_led_exit(local); | |
2a519311 | 961 | kfree(local->int_scan_req.channels); |
f0706e82 JB |
962 | } |
963 | EXPORT_SYMBOL(ieee80211_unregister_hw); | |
964 | ||
965 | void ieee80211_free_hw(struct ieee80211_hw *hw) | |
966 | { | |
967 | struct ieee80211_local *local = hw_to_local(hw); | |
968 | ||
c771c9d8 | 969 | mutex_destroy(&local->iflist_mtx); |
f3b85252 | 970 | mutex_destroy(&local->scan_mtx); |
c771c9d8 | 971 | |
f0706e82 JB |
972 | wiphy_free(local->hw.wiphy); |
973 | } | |
974 | EXPORT_SYMBOL(ieee80211_free_hw); | |
975 | ||
f0706e82 JB |
976 | static int __init ieee80211_init(void) |
977 | { | |
978 | struct sk_buff *skb; | |
979 | int ret; | |
980 | ||
e039fa4a JB |
981 | BUILD_BUG_ON(sizeof(struct ieee80211_tx_info) > sizeof(skb->cb)); |
982 | BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, driver_data) + | |
c6a1fa12 | 983 | IEEE80211_TX_INFO_DRIVER_DATA_SIZE > sizeof(skb->cb)); |
f0706e82 | 984 | |
cccf129f FF |
985 | ret = rc80211_minstrel_init(); |
986 | if (ret) | |
987 | return ret; | |
988 | ||
4b475898 | 989 | ret = rc80211_pid_init(); |
ad018375 | 990 | if (ret) |
51cb6db0 | 991 | return ret; |
f0706e82 | 992 | |
e9f207f0 JB |
993 | ieee80211_debugfs_netdev_init(); |
994 | ||
f0706e82 JB |
995 | return 0; |
996 | } | |
997 | ||
f0706e82 JB |
998 | static void __exit ieee80211_exit(void) |
999 | { | |
4b475898 | 1000 | rc80211_pid_exit(); |
cccf129f | 1001 | rc80211_minstrel_exit(); |
ac71c691 | 1002 | |
3b96766f JB |
1003 | /* |
1004 | * For key todo, it'll be empty by now but the work | |
1005 | * might still be scheduled. | |
1006 | */ | |
1007 | flush_scheduled_work(); | |
1008 | ||
f7a92144 LCC |
1009 | if (mesh_allocated) |
1010 | ieee80211s_stop(); | |
902acc78 | 1011 | |
e9f207f0 | 1012 | ieee80211_debugfs_netdev_exit(); |
f0706e82 JB |
1013 | } |
1014 | ||
1015 | ||
ca9938fe | 1016 | subsys_initcall(ieee80211_init); |
f0706e82 JB |
1017 | module_exit(ieee80211_exit); |
1018 | ||
1019 | MODULE_DESCRIPTION("IEEE 802.11 subsystem"); | |
1020 | MODULE_LICENSE("GPL"); |