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) { | |
97af7432 BC |
201 | if (local->quiescing || !netif_running(sdata->dev) || |
202 | test_bit(SCAN_SW_SCANNING, &local->scanning)) { | |
2d0ddec5 JB |
203 | sdata->vif.bss_conf.enable_beacon = false; |
204 | } else { | |
205 | /* | |
206 | * Beacon should be enabled, but AP mode must | |
207 | * check whether there is a beacon configured. | |
208 | */ | |
209 | switch (sdata->vif.type) { | |
210 | case NL80211_IFTYPE_AP: | |
211 | sdata->vif.bss_conf.enable_beacon = | |
212 | !!rcu_dereference(sdata->u.ap.beacon); | |
213 | break; | |
214 | case NL80211_IFTYPE_ADHOC: | |
215 | sdata->vif.bss_conf.enable_beacon = | |
216 | !!rcu_dereference(sdata->u.ibss.presp); | |
217 | break; | |
218 | case NL80211_IFTYPE_MESH_POINT: | |
219 | sdata->vif.bss_conf.enable_beacon = true; | |
220 | break; | |
221 | default: | |
222 | /* not reached */ | |
223 | WARN_ON(1); | |
224 | break; | |
225 | } | |
226 | } | |
227 | } | |
228 | ||
24487981 JB |
229 | drv_bss_info_changed(local, &sdata->vif, |
230 | &sdata->vif.bss_conf, changed); | |
57c4d7b4 | 231 | |
e535c756 JB |
232 | /* DEPRECATED */ |
233 | local->hw.conf.beacon_int = sdata->vif.bss_conf.beacon_int; | |
d9430a32 DD |
234 | } |
235 | ||
f698d856 | 236 | u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata) |
d9430a32 | 237 | { |
bda3933a JB |
238 | sdata->vif.bss_conf.use_cts_prot = false; |
239 | sdata->vif.bss_conf.use_short_preamble = false; | |
240 | sdata->vif.bss_conf.use_short_slot = false; | |
7a5158ef JB |
241 | return BSS_CHANGED_ERP_CTS_PROT | |
242 | BSS_CHANGED_ERP_PREAMBLE | | |
243 | BSS_CHANGED_ERP_SLOT; | |
d9430a32 DD |
244 | } |
245 | ||
f0706e82 | 246 | void ieee80211_tx_status_irqsafe(struct ieee80211_hw *hw, |
e039fa4a | 247 | struct sk_buff *skb) |
f0706e82 JB |
248 | { |
249 | struct ieee80211_local *local = hw_to_local(hw); | |
e039fa4a | 250 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
f0706e82 JB |
251 | int tmp; |
252 | ||
f0706e82 | 253 | skb->pkt_type = IEEE80211_TX_STATUS_MSG; |
e039fa4a | 254 | skb_queue_tail(info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS ? |
f0706e82 JB |
255 | &local->skb_queue : &local->skb_queue_unreliable, skb); |
256 | tmp = skb_queue_len(&local->skb_queue) + | |
257 | skb_queue_len(&local->skb_queue_unreliable); | |
258 | while (tmp > IEEE80211_IRQSAFE_QUEUE_LIMIT && | |
259 | (skb = skb_dequeue(&local->skb_queue_unreliable))) { | |
f0706e82 JB |
260 | dev_kfree_skb_irq(skb); |
261 | tmp--; | |
262 | I802_DEBUG_INC(local->tx_status_drop); | |
263 | } | |
264 | tasklet_schedule(&local->tasklet); | |
265 | } | |
266 | EXPORT_SYMBOL(ieee80211_tx_status_irqsafe); | |
267 | ||
268 | static void ieee80211_tasklet_handler(unsigned long data) | |
269 | { | |
270 | struct ieee80211_local *local = (struct ieee80211_local *) data; | |
271 | struct sk_buff *skb; | |
eadc8d9e | 272 | struct ieee80211_ra_tid *ra_tid; |
f0706e82 JB |
273 | |
274 | while ((skb = skb_dequeue(&local->skb_queue)) || | |
275 | (skb = skb_dequeue(&local->skb_queue_unreliable))) { | |
276 | switch (skb->pkt_type) { | |
277 | case IEEE80211_RX_MSG: | |
51fb61e7 | 278 | /* Clear skb->pkt_type in order to not confuse kernel |
f0706e82 JB |
279 | * netstack. */ |
280 | skb->pkt_type = 0; | |
f1d58c25 | 281 | ieee80211_rx(local_to_hw(local), skb); |
f0706e82 JB |
282 | break; |
283 | case IEEE80211_TX_STATUS_MSG: | |
f0706e82 | 284 | skb->pkt_type = 0; |
e039fa4a | 285 | ieee80211_tx_status(local_to_hw(local), skb); |
f0706e82 | 286 | break; |
eadc8d9e RR |
287 | case IEEE80211_DELBA_MSG: |
288 | ra_tid = (struct ieee80211_ra_tid *) &skb->cb; | |
289 | ieee80211_stop_tx_ba_cb(local_to_hw(local), | |
290 | ra_tid->ra, ra_tid->tid); | |
291 | dev_kfree_skb(skb); | |
292 | break; | |
293 | case IEEE80211_ADDBA_MSG: | |
294 | ra_tid = (struct ieee80211_ra_tid *) &skb->cb; | |
295 | ieee80211_start_tx_ba_cb(local_to_hw(local), | |
296 | ra_tid->ra, ra_tid->tid); | |
297 | dev_kfree_skb(skb); | |
298 | break ; | |
f4ea83dd | 299 | default: |
5e3f3089 LF |
300 | WARN(1, "mac80211: Packet is of unknown type %d\n", |
301 | skb->pkt_type); | |
f0706e82 JB |
302 | dev_kfree_skb(skb); |
303 | break; | |
304 | } | |
305 | } | |
306 | } | |
307 | ||
d46e144b JB |
308 | static void ieee80211_handle_filtered_frame(struct ieee80211_local *local, |
309 | struct sta_info *sta, | |
e039fa4a | 310 | struct sk_buff *skb) |
d46e144b | 311 | { |
8f77f384 JB |
312 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
313 | ||
4da163ab JB |
314 | /* |
315 | * XXX: This is temporary! | |
316 | * | |
317 | * The problem here is that when we get here, the driver will | |
318 | * quite likely have pretty much overwritten info->control by | |
319 | * using info->driver_data or info->rate_driver_data. Thus, | |
320 | * when passing out the frame to the driver again, we would be | |
321 | * passing completely bogus data since the driver would then | |
322 | * expect a properly filled info->control. In mac80211 itself | |
323 | * the same problem occurs, since we need info->control.vif | |
324 | * internally. | |
325 | * | |
326 | * To fix this, we should send the frame through TX processing | |
327 | * again. However, it's not that simple, since the frame will | |
328 | * have been software-encrypted (if applicable) already, and | |
329 | * encrypting it again doesn't do much good. So to properly do | |
330 | * that, we not only have to skip the actual 'raw' encryption | |
331 | * (key selection etc. still has to be done!) but also the | |
332 | * sequence number assignment since that impacts the crypto | |
333 | * encapsulation, of course. | |
334 | * | |
335 | * Hence, for now, fix the bug by just dropping the frame. | |
336 | */ | |
337 | goto drop; | |
338 | ||
d46e144b JB |
339 | sta->tx_filtered_count++; |
340 | ||
341 | /* | |
342 | * Clear the TX filter mask for this STA when sending the next | |
343 | * packet. If the STA went to power save mode, this will happen | |
f6d97104 | 344 | * when it wakes up for the next time. |
d46e144b | 345 | */ |
07346f81 | 346 | set_sta_flags(sta, WLAN_STA_CLEAR_PS_FILT); |
d46e144b JB |
347 | |
348 | /* | |
349 | * This code races in the following way: | |
350 | * | |
351 | * (1) STA sends frame indicating it will go to sleep and does so | |
352 | * (2) hardware/firmware adds STA to filter list, passes frame up | |
353 | * (3) hardware/firmware processes TX fifo and suppresses a frame | |
354 | * (4) we get TX status before having processed the frame and | |
355 | * knowing that the STA has gone to sleep. | |
356 | * | |
357 | * This is actually quite unlikely even when both those events are | |
358 | * processed from interrupts coming in quickly after one another or | |
359 | * even at the same time because we queue both TX status events and | |
360 | * RX frames to be processed by a tasklet and process them in the | |
361 | * same order that they were received or TX status last. Hence, there | |
362 | * is no race as long as the frame RX is processed before the next TX | |
363 | * status, which drivers can ensure, see below. | |
364 | * | |
365 | * Note that this can only happen if the hardware or firmware can | |
366 | * actually add STAs to the filter list, if this is done by the | |
367 | * driver in response to set_tim() (which will only reduce the race | |
368 | * this whole filtering tries to solve, not completely solve it) | |
369 | * this situation cannot happen. | |
370 | * | |
371 | * To completely solve this race drivers need to make sure that they | |
372 | * (a) don't mix the irq-safe/not irq-safe TX status/RX processing | |
373 | * functions and | |
374 | * (b) always process RX events before TX status events if ordering | |
375 | * can be unknown, for example with different interrupt status | |
376 | * bits. | |
377 | */ | |
07346f81 | 378 | if (test_sta_flags(sta, WLAN_STA_PS) && |
d46e144b | 379 | skb_queue_len(&sta->tx_filtered) < STA_MAX_TX_BUFFER) { |
d46e144b JB |
380 | skb_queue_tail(&sta->tx_filtered, skb); |
381 | return; | |
382 | } | |
383 | ||
8f77f384 JB |
384 | if (!test_sta_flags(sta, WLAN_STA_PS) && |
385 | !(info->flags & IEEE80211_TX_INTFL_RETRIED)) { | |
d46e144b | 386 | /* Software retry the packet once */ |
8f77f384 JB |
387 | info->flags |= IEEE80211_TX_INTFL_RETRIED; |
388 | ieee80211_add_pending_skb(local, skb); | |
d46e144b JB |
389 | return; |
390 | } | |
391 | ||
4da163ab | 392 | drop: |
f4ea83dd | 393 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
d46e144b JB |
394 | if (net_ratelimit()) |
395 | printk(KERN_DEBUG "%s: dropped TX filtered frame, " | |
396 | "queue_len=%d PS=%d @%lu\n", | |
397 | wiphy_name(local->hw.wiphy), | |
398 | skb_queue_len(&sta->tx_filtered), | |
07346f81 | 399 | !!test_sta_flags(sta, WLAN_STA_PS), jiffies); |
f4ea83dd | 400 | #endif |
d46e144b JB |
401 | dev_kfree_skb(skb); |
402 | } | |
403 | ||
e039fa4a | 404 | void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb) |
f0706e82 JB |
405 | { |
406 | struct sk_buff *skb2; | |
407 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; | |
408 | struct ieee80211_local *local = hw_to_local(hw); | |
e039fa4a | 409 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
f0706e82 | 410 | u16 frag, type; |
429a3805 | 411 | __le16 fc; |
4b7679a5 | 412 | struct ieee80211_supported_band *sband; |
b306f453 JB |
413 | struct ieee80211_tx_status_rtap_hdr *rthdr; |
414 | struct ieee80211_sub_if_data *sdata; | |
3d30d949 | 415 | struct net_device *prev_dev = NULL; |
429a3805 | 416 | struct sta_info *sta; |
e6a9854b JB |
417 | int retry_count = -1, i; |
418 | ||
419 | for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) { | |
420 | /* the HW cannot have attempted that rate */ | |
421 | if (i >= hw->max_rates) { | |
422 | info->status.rates[i].idx = -1; | |
423 | info->status.rates[i].count = 0; | |
424 | } | |
425 | ||
426 | retry_count += info->status.rates[i].count; | |
427 | } | |
428 | if (retry_count < 0) | |
429 | retry_count = 0; | |
f0706e82 | 430 | |
d0709a65 JB |
431 | rcu_read_lock(); |
432 | ||
e6a9854b JB |
433 | sband = local->hw.wiphy->bands[info->band]; |
434 | ||
95dac040 JB |
435 | sta = sta_info_get(local, hdr->addr1); |
436 | ||
437 | if (sta) { | |
e6a9854b | 438 | if (!(info->flags & IEEE80211_TX_STAT_ACK) && |
95dac040 JB |
439 | test_sta_flags(sta, WLAN_STA_PS)) { |
440 | /* | |
441 | * The STA is in power save mode, so assume | |
442 | * that this TX packet failed because of that. | |
443 | */ | |
444 | ieee80211_handle_filtered_frame(local, sta, skb); | |
445 | rcu_read_unlock(); | |
446 | return; | |
f0706e82 | 447 | } |
f0706e82 | 448 | |
95dac040 JB |
449 | fc = hdr->frame_control; |
450 | ||
451 | if ((info->flags & IEEE80211_TX_STAT_AMPDU_NO_BACK) && | |
452 | (ieee80211_is_data_qos(fc))) { | |
453 | u16 tid, ssn; | |
454 | u8 *qc; | |
429a3805 | 455 | |
429a3805 RR |
456 | qc = ieee80211_get_qos_ctl(hdr); |
457 | tid = qc[0] & 0xf; | |
458 | ssn = ((le16_to_cpu(hdr->seq_ctrl) + 0x10) | |
459 | & IEEE80211_SCTL_SEQ); | |
f698d856 | 460 | ieee80211_send_bar(sta->sdata, hdr->addr1, |
429a3805 RR |
461 | tid, ssn); |
462 | } | |
429a3805 | 463 | |
95dac040 | 464 | if (info->flags & IEEE80211_TX_STAT_TX_FILTERED) { |
e039fa4a | 465 | ieee80211_handle_filtered_frame(local, sta, skb); |
d0709a65 | 466 | rcu_read_unlock(); |
f0706e82 | 467 | return; |
95dac040 | 468 | } else { |
e6a9854b | 469 | if (!(info->flags & IEEE80211_TX_STAT_ACK)) |
95dac040 | 470 | sta->tx_retry_failed++; |
e6a9854b | 471 | sta->tx_retry_count += retry_count; |
f0706e82 | 472 | } |
95dac040 | 473 | |
4b7679a5 | 474 | rate_control_tx_status(local, sband, sta, skb); |
95dac040 | 475 | } |
f0706e82 | 476 | |
d0709a65 JB |
477 | rcu_read_unlock(); |
478 | ||
f0706e82 JB |
479 | ieee80211_led_tx(local, 0); |
480 | ||
481 | /* SNMP counters | |
482 | * Fragments are passed to low-level drivers as separate skbs, so these | |
483 | * are actually fragments, not frames. Update frame counters only for | |
484 | * the first fragment of the frame. */ | |
485 | ||
486 | frag = le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_FRAG; | |
487 | type = le16_to_cpu(hdr->frame_control) & IEEE80211_FCTL_FTYPE; | |
488 | ||
e039fa4a | 489 | if (info->flags & IEEE80211_TX_STAT_ACK) { |
f0706e82 JB |
490 | if (frag == 0) { |
491 | local->dot11TransmittedFrameCount++; | |
492 | if (is_multicast_ether_addr(hdr->addr1)) | |
493 | local->dot11MulticastTransmittedFrameCount++; | |
e6a9854b | 494 | if (retry_count > 0) |
f0706e82 | 495 | local->dot11RetryCount++; |
e6a9854b | 496 | if (retry_count > 1) |
f0706e82 JB |
497 | local->dot11MultipleRetryCount++; |
498 | } | |
499 | ||
500 | /* This counter shall be incremented for an acknowledged MPDU | |
501 | * with an individual address in the address 1 field or an MPDU | |
502 | * with a multicast address in the address 1 field of type Data | |
503 | * or Management. */ | |
504 | if (!is_multicast_ether_addr(hdr->addr1) || | |
505 | type == IEEE80211_FTYPE_DATA || | |
506 | type == IEEE80211_FTYPE_MGMT) | |
507 | local->dot11TransmittedFragmentCount++; | |
508 | } else { | |
509 | if (frag == 0) | |
510 | local->dot11FailedCount++; | |
511 | } | |
512 | ||
b306f453 JB |
513 | /* this was a transmitted frame, but now we want to reuse it */ |
514 | skb_orphan(skb); | |
515 | ||
3d30d949 MW |
516 | /* |
517 | * This is a bit racy but we can avoid a lot of work | |
518 | * with this test... | |
519 | */ | |
520 | if (!local->monitors && !local->cooked_mntrs) { | |
f0706e82 JB |
521 | dev_kfree_skb(skb); |
522 | return; | |
523 | } | |
524 | ||
b306f453 | 525 | /* send frame to monitor interfaces now */ |
f0706e82 | 526 | |
b306f453 JB |
527 | if (skb_headroom(skb) < sizeof(*rthdr)) { |
528 | printk(KERN_ERR "ieee80211_tx_status: headroom too small\n"); | |
f0706e82 JB |
529 | dev_kfree_skb(skb); |
530 | return; | |
531 | } | |
f0706e82 | 532 | |
988c0f72 | 533 | rthdr = (struct ieee80211_tx_status_rtap_hdr *) |
b306f453 JB |
534 | skb_push(skb, sizeof(*rthdr)); |
535 | ||
536 | memset(rthdr, 0, sizeof(*rthdr)); | |
537 | rthdr->hdr.it_len = cpu_to_le16(sizeof(*rthdr)); | |
538 | rthdr->hdr.it_present = | |
539 | cpu_to_le32((1 << IEEE80211_RADIOTAP_TX_FLAGS) | | |
e6a9854b JB |
540 | (1 << IEEE80211_RADIOTAP_DATA_RETRIES) | |
541 | (1 << IEEE80211_RADIOTAP_RATE)); | |
b306f453 | 542 | |
e039fa4a | 543 | if (!(info->flags & IEEE80211_TX_STAT_ACK) && |
b306f453 JB |
544 | !is_multicast_ether_addr(hdr->addr1)) |
545 | rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_FAIL); | |
546 | ||
e6a9854b JB |
547 | /* |
548 | * XXX: Once radiotap gets the bitmap reset thing the vendor | |
549 | * extensions proposal contains, we can actually report | |
550 | * the whole set of tries we did. | |
551 | */ | |
552 | if ((info->status.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) || | |
553 | (info->status.rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT)) | |
b306f453 | 554 | rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_CTS); |
e6a9854b | 555 | else if (info->status.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) |
b306f453 | 556 | rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_RTS); |
e6a9854b JB |
557 | if (info->status.rates[0].idx >= 0 && |
558 | !(info->status.rates[0].flags & IEEE80211_TX_RC_MCS)) | |
559 | rthdr->rate = sband->bitrates[ | |
560 | info->status.rates[0].idx].bitrate / 5; | |
b306f453 | 561 | |
e6a9854b JB |
562 | /* for now report the total retry_count */ |
563 | rthdr->data_retries = retry_count; | |
b306f453 | 564 | |
3d30d949 MW |
565 | /* XXX: is this sufficient for BPF? */ |
566 | skb_set_mac_header(skb, 0); | |
567 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
568 | skb->pkt_type = PACKET_OTHERHOST; | |
569 | skb->protocol = htons(ETH_P_802_2); | |
570 | memset(skb->cb, 0, sizeof(skb->cb)); | |
571 | ||
79010420 | 572 | rcu_read_lock(); |
79010420 | 573 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { |
05c914fe | 574 | if (sdata->vif.type == NL80211_IFTYPE_MONITOR) { |
b306f453 JB |
575 | if (!netif_running(sdata->dev)) |
576 | continue; | |
3d30d949 MW |
577 | |
578 | if (prev_dev) { | |
79010420 | 579 | skb2 = skb_clone(skb, GFP_ATOMIC); |
3d30d949 MW |
580 | if (skb2) { |
581 | skb2->dev = prev_dev; | |
582 | netif_rx(skb2); | |
583 | } | |
584 | } | |
585 | ||
586 | prev_dev = sdata->dev; | |
b306f453 JB |
587 | } |
588 | } | |
3d30d949 MW |
589 | if (prev_dev) { |
590 | skb->dev = prev_dev; | |
591 | netif_rx(skb); | |
592 | skb = NULL; | |
593 | } | |
79010420 | 594 | rcu_read_unlock(); |
3d30d949 | 595 | dev_kfree_skb(skb); |
f0706e82 JB |
596 | } |
597 | EXPORT_SYMBOL(ieee80211_tx_status); | |
598 | ||
f2753ddb JB |
599 | static void ieee80211_restart_work(struct work_struct *work) |
600 | { | |
601 | struct ieee80211_local *local = | |
602 | container_of(work, struct ieee80211_local, restart_work); | |
603 | ||
604 | rtnl_lock(); | |
605 | ieee80211_reconfig(local); | |
606 | rtnl_unlock(); | |
607 | } | |
608 | ||
609 | void ieee80211_restart_hw(struct ieee80211_hw *hw) | |
610 | { | |
611 | struct ieee80211_local *local = hw_to_local(hw); | |
612 | ||
613 | /* use this reason, __ieee80211_resume will unblock it */ | |
614 | ieee80211_stop_queues_by_reason(hw, | |
615 | IEEE80211_QUEUE_STOP_REASON_SUSPEND); | |
616 | ||
617 | schedule_work(&local->restart_work); | |
618 | } | |
619 | EXPORT_SYMBOL(ieee80211_restart_hw); | |
620 | ||
f0706e82 JB |
621 | struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len, |
622 | const struct ieee80211_ops *ops) | |
623 | { | |
f0706e82 | 624 | struct ieee80211_local *local; |
96f5e66e | 625 | int priv_size, i; |
f0706e82 JB |
626 | struct wiphy *wiphy; |
627 | ||
628 | /* Ensure 32-byte alignment of our private data and hw private data. | |
629 | * We use the wiphy priv data for both our ieee80211_local and for | |
630 | * the driver's private data | |
631 | * | |
632 | * In memory it'll be like this: | |
633 | * | |
634 | * +-------------------------+ | |
635 | * | struct wiphy | | |
636 | * +-------------------------+ | |
637 | * | struct ieee80211_local | | |
638 | * +-------------------------+ | |
639 | * | driver's private data | | |
640 | * +-------------------------+ | |
641 | * | |
642 | */ | |
1ce8e7b5 | 643 | priv_size = ALIGN(sizeof(*local), NETDEV_ALIGN) + priv_data_len; |
f0706e82 JB |
644 | |
645 | wiphy = wiphy_new(&mac80211_config_ops, priv_size); | |
646 | ||
647 | if (!wiphy) | |
648 | return NULL; | |
649 | ||
a272a720 | 650 | wiphy->netnsok = true; |
f0706e82 | 651 | wiphy->privid = mac80211_wiphy_privid; |
18a83659 | 652 | |
00d3f14c JB |
653 | /* Yes, putting cfg80211_bss into ieee80211_bss is a hack */ |
654 | wiphy->bss_priv_size = sizeof(struct ieee80211_bss) - | |
655 | sizeof(struct cfg80211_bss); | |
f0706e82 JB |
656 | |
657 | local = wiphy_priv(wiphy); | |
de95a54b | 658 | |
f0706e82 JB |
659 | local->hw.wiphy = wiphy; |
660 | ||
1ce8e7b5 | 661 | local->hw.priv = (char *)local + ALIGN(sizeof(*local), NETDEV_ALIGN); |
f0706e82 | 662 | |
4480f15c | 663 | BUG_ON(!ops->tx); |
4150c572 JB |
664 | BUG_ON(!ops->start); |
665 | BUG_ON(!ops->stop); | |
4480f15c JB |
666 | BUG_ON(!ops->config); |
667 | BUG_ON(!ops->add_interface); | |
4150c572 JB |
668 | BUG_ON(!ops->remove_interface); |
669 | BUG_ON(!ops->configure_filter); | |
f0706e82 JB |
670 | local->ops = ops; |
671 | ||
e6a9854b JB |
672 | /* set up some defaults */ |
673 | local->hw.queues = 1; | |
674 | local->hw.max_rates = 1; | |
b9a5f8ca JM |
675 | local->hw.conf.long_frame_max_tx_count = wiphy->retry_long; |
676 | local->hw.conf.short_frame_max_tx_count = wiphy->retry_short; | |
e8975581 | 677 | local->hw.conf.radio_enabled = true; |
c428c892 | 678 | local->user_power_level = -1; |
f0706e82 | 679 | |
79010420 | 680 | INIT_LIST_HEAD(&local->interfaces); |
c771c9d8 | 681 | mutex_init(&local->iflist_mtx); |
f3b85252 | 682 | mutex_init(&local->scan_mtx); |
f0706e82 | 683 | |
b16bd15c | 684 | spin_lock_init(&local->key_lock); |
3b8d81e0 | 685 | spin_lock_init(&local->filter_lock); |
ce7c9111 KV |
686 | spin_lock_init(&local->queue_stop_reason_lock); |
687 | ||
c2b13452 | 688 | INIT_DELAYED_WORK(&local->scan_work, ieee80211_scan_work); |
f0706e82 | 689 | |
f2753ddb JB |
690 | INIT_WORK(&local->restart_work, ieee80211_restart_work); |
691 | ||
520eb820 KV |
692 | INIT_WORK(&local->dynamic_ps_enable_work, |
693 | ieee80211_dynamic_ps_enable_work); | |
694 | INIT_WORK(&local->dynamic_ps_disable_work, | |
695 | ieee80211_dynamic_ps_disable_work); | |
696 | setup_timer(&local->dynamic_ps_timer, | |
697 | ieee80211_dynamic_ps_timer, (unsigned long) local); | |
698 | ||
f0706e82 JB |
699 | sta_info_init(local); |
700 | ||
2a577d98 JB |
701 | for (i = 0; i < IEEE80211_MAX_QUEUES; i++) |
702 | skb_queue_head_init(&local->pending[i]); | |
f0706e82 JB |
703 | tasklet_init(&local->tx_pending_tasklet, ieee80211_tx_pending, |
704 | (unsigned long)local); | |
705 | tasklet_disable(&local->tx_pending_tasklet); | |
706 | ||
707 | tasklet_init(&local->tasklet, | |
708 | ieee80211_tasklet_handler, | |
709 | (unsigned long) local); | |
710 | tasklet_disable(&local->tasklet); | |
711 | ||
712 | skb_queue_head_init(&local->skb_queue); | |
713 | skb_queue_head_init(&local->skb_queue_unreliable); | |
714 | ||
cd8ffc80 JB |
715 | spin_lock_init(&local->ampdu_lock); |
716 | ||
f0706e82 JB |
717 | return local_to_hw(local); |
718 | } | |
719 | EXPORT_SYMBOL(ieee80211_alloc_hw); | |
720 | ||
721 | int ieee80211_register_hw(struct ieee80211_hw *hw) | |
722 | { | |
723 | struct ieee80211_local *local = hw_to_local(hw); | |
f0706e82 | 724 | int result; |
8318d78a | 725 | enum ieee80211_band band; |
de95a54b | 726 | int channels, i, j, max_bitrates; |
5ef2d41a | 727 | bool supp_ht; |
25e47c18 JB |
728 | static const u32 cipher_suites[] = { |
729 | WLAN_CIPHER_SUITE_WEP40, | |
730 | WLAN_CIPHER_SUITE_WEP104, | |
731 | WLAN_CIPHER_SUITE_TKIP, | |
732 | WLAN_CIPHER_SUITE_CCMP, | |
733 | ||
734 | /* keep last -- depends on hw flags! */ | |
735 | WLAN_CIPHER_SUITE_AES_CMAC | |
736 | }; | |
8318d78a JB |
737 | |
738 | /* | |
739 | * generic code guarantees at least one band, | |
740 | * set this very early because much code assumes | |
741 | * that hw.conf.channel is assigned | |
742 | */ | |
2a519311 | 743 | channels = 0; |
de95a54b | 744 | max_bitrates = 0; |
5ef2d41a | 745 | supp_ht = false; |
8318d78a JB |
746 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { |
747 | struct ieee80211_supported_band *sband; | |
748 | ||
749 | sband = local->hw.wiphy->bands[band]; | |
de95a54b JB |
750 | if (!sband) |
751 | continue; | |
752 | if (!local->oper_channel) { | |
8318d78a JB |
753 | /* init channel we're on */ |
754 | local->hw.conf.channel = | |
58905ca5 JB |
755 | local->oper_channel = &sband->channels[0]; |
756 | local->hw.conf.channel_type = NL80211_CHAN_NO_HT; | |
8318d78a | 757 | } |
de95a54b JB |
758 | channels += sband->n_channels; |
759 | ||
760 | if (max_bitrates < sband->n_bitrates) | |
761 | max_bitrates = sband->n_bitrates; | |
5ef2d41a | 762 | supp_ht = supp_ht || sband->ht_cap.ht_supported; |
8318d78a | 763 | } |
f0706e82 | 764 | |
2a519311 JB |
765 | local->int_scan_req.n_channels = channels; |
766 | local->int_scan_req.channels = kzalloc(sizeof(void *) * channels, GFP_KERNEL); | |
767 | if (!local->int_scan_req.channels) | |
768 | return -ENOMEM; | |
769 | ||
f59ac048 LR |
770 | /* if low-level driver supports AP, we also support VLAN */ |
771 | if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) | |
772 | local->hw.wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP_VLAN); | |
773 | ||
774 | /* mac80211 always supports monitor */ | |
775 | local->hw.wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR); | |
776 | ||
77965c97 JB |
777 | if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM) |
778 | local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM; | |
779 | else if (local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC) | |
780 | local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC; | |
781 | ||
de95a54b JB |
782 | /* |
783 | * Calculate scan IE length -- we need this to alloc | |
784 | * memory and to subtract from the driver limit. It | |
785 | * includes the (extended) supported rates and HT | |
786 | * information -- SSID is the driver's responsibility. | |
787 | */ | |
788 | local->scan_ies_len = 4 + max_bitrates; /* (ext) supp rates */ | |
5ef2d41a JB |
789 | if (supp_ht) |
790 | local->scan_ies_len += 2 + sizeof(struct ieee80211_ht_cap); | |
de95a54b JB |
791 | |
792 | if (!local->ops->hw_scan) { | |
793 | /* For hw_scan, driver needs to set these up. */ | |
794 | local->hw.wiphy->max_scan_ssids = 4; | |
795 | local->hw.wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN; | |
796 | } | |
797 | ||
798 | /* | |
799 | * If the driver supports any scan IEs, then assume the | |
800 | * limit includes the IEs mac80211 will add, otherwise | |
801 | * leave it at zero and let the driver sort it out; we | |
802 | * still pass our IEs to the driver but userspace will | |
803 | * not be allowed to in that case. | |
804 | */ | |
805 | if (local->hw.wiphy->max_scan_ie_len) | |
806 | local->hw.wiphy->max_scan_ie_len -= local->scan_ies_len; | |
807 | ||
25e47c18 JB |
808 | local->hw.wiphy->cipher_suites = cipher_suites; |
809 | local->hw.wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites); | |
810 | if (!(local->hw.flags & IEEE80211_HW_MFP_CAPABLE)) | |
811 | local->hw.wiphy->n_cipher_suites--; | |
812 | ||
f0706e82 JB |
813 | result = wiphy_register(local->hw.wiphy); |
814 | if (result < 0) | |
2a519311 | 815 | goto fail_wiphy_register; |
f0706e82 | 816 | |
e2530083 JB |
817 | /* |
818 | * We use the number of queues for feature tests (QoS, HT) internally | |
819 | * so restrict them appropriately. | |
820 | */ | |
e2530083 JB |
821 | if (hw->queues > IEEE80211_MAX_QUEUES) |
822 | hw->queues = IEEE80211_MAX_QUEUES; | |
e2530083 | 823 | |
42935eca | 824 | local->workqueue = |
30d3ef41 | 825 | create_singlethread_workqueue(wiphy_name(local->hw.wiphy)); |
42935eca | 826 | if (!local->workqueue) { |
f0706e82 JB |
827 | result = -ENOMEM; |
828 | goto fail_workqueue; | |
829 | } | |
830 | ||
b306f453 JB |
831 | /* |
832 | * The hardware needs headroom for sending the frame, | |
833 | * and we need some headroom for passing the frame to monitor | |
834 | * interfaces, but never both at the same time. | |
835 | */ | |
33ccad35 JB |
836 | local->tx_headroom = max_t(unsigned int , local->hw.extra_tx_headroom, |
837 | sizeof(struct ieee80211_tx_status_rtap_hdr)); | |
b306f453 | 838 | |
e9f207f0 JB |
839 | debugfs_hw_add(local); |
840 | ||
ea95bba4 TW |
841 | if (local->hw.max_listen_interval == 0) |
842 | local->hw.max_listen_interval = 1; | |
843 | ||
844 | local->hw.conf.listen_interval = local->hw.max_listen_interval; | |
845 | ||
f0706e82 JB |
846 | result = sta_info_start(local); |
847 | if (result < 0) | |
848 | goto fail_sta_info; | |
849 | ||
d4c4a9a1 AJ |
850 | result = ieee80211_wep_init(local); |
851 | if (result < 0) { | |
852 | printk(KERN_DEBUG "%s: Failed to initialize wep: %d\n", | |
853 | wiphy_name(local->hw.wiphy), result); | |
854 | goto fail_wep; | |
855 | } | |
856 | ||
f0706e82 | 857 | rtnl_lock(); |
f0706e82 | 858 | |
830f9038 JB |
859 | result = ieee80211_init_rate_ctrl_alg(local, |
860 | hw->rate_control_algorithm); | |
f0706e82 JB |
861 | if (result < 0) { |
862 | printk(KERN_DEBUG "%s: Failed to initialize rate control " | |
dd1cd4c6 | 863 | "algorithm\n", wiphy_name(local->hw.wiphy)); |
f0706e82 JB |
864 | goto fail_rate; |
865 | } | |
866 | ||
8dffff21 JB |
867 | /* add one default STA interface if supported */ |
868 | if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_STATION)) { | |
869 | result = ieee80211_if_add(local, "wlan%d", NULL, | |
870 | NL80211_IFTYPE_STATION, NULL); | |
871 | if (result) | |
872 | printk(KERN_WARNING "%s: Failed to add default virtual iface\n", | |
873 | wiphy_name(local->hw.wiphy)); | |
874 | } | |
f0706e82 | 875 | |
f0706e82 JB |
876 | rtnl_unlock(); |
877 | ||
878 | ieee80211_led_init(local); | |
879 | ||
2a519311 JB |
880 | /* alloc internal scan request */ |
881 | i = 0; | |
882 | local->int_scan_req.ssids = &local->scan_ssid; | |
883 | local->int_scan_req.n_ssids = 1; | |
884 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { | |
885 | if (!hw->wiphy->bands[band]) | |
886 | continue; | |
887 | for (j = 0; j < hw->wiphy->bands[band]->n_channels; j++) { | |
888 | local->int_scan_req.channels[i] = | |
889 | &hw->wiphy->bands[band]->channels[j]; | |
890 | i++; | |
891 | } | |
892 | } | |
893 | ||
10f644a4 JB |
894 | local->network_latency_notifier.notifier_call = |
895 | ieee80211_max_network_latency; | |
896 | result = pm_qos_add_notifier(PM_QOS_NETWORK_LATENCY, | |
897 | &local->network_latency_notifier); | |
898 | ||
899 | if (result) { | |
900 | rtnl_lock(); | |
901 | goto fail_pm_qos; | |
902 | } | |
903 | ||
f0706e82 JB |
904 | return 0; |
905 | ||
10f644a4 JB |
906 | fail_pm_qos: |
907 | ieee80211_led_exit(local); | |
908 | ieee80211_remove_interfaces(local); | |
10f644a4 | 909 | fail_rate: |
f0706e82 | 910 | rtnl_unlock(); |
d4c4a9a1 | 911 | ieee80211_wep_free(local); |
aba74530 | 912 | fail_wep: |
f0706e82 | 913 | sta_info_stop(local); |
10f644a4 | 914 | fail_sta_info: |
e9f207f0 | 915 | debugfs_hw_del(local); |
42935eca | 916 | destroy_workqueue(local->workqueue); |
10f644a4 | 917 | fail_workqueue: |
f0706e82 | 918 | wiphy_unregister(local->hw.wiphy); |
10f644a4 | 919 | fail_wiphy_register: |
2a519311 | 920 | kfree(local->int_scan_req.channels); |
f0706e82 JB |
921 | return result; |
922 | } | |
923 | EXPORT_SYMBOL(ieee80211_register_hw); | |
924 | ||
f0706e82 JB |
925 | void ieee80211_unregister_hw(struct ieee80211_hw *hw) |
926 | { | |
927 | struct ieee80211_local *local = hw_to_local(hw); | |
f0706e82 JB |
928 | |
929 | tasklet_kill(&local->tx_pending_tasklet); | |
930 | tasklet_kill(&local->tasklet); | |
931 | ||
10f644a4 JB |
932 | pm_qos_remove_notifier(PM_QOS_NETWORK_LATENCY, |
933 | &local->network_latency_notifier); | |
934 | ||
f0706e82 JB |
935 | rtnl_lock(); |
936 | ||
79010420 JB |
937 | /* |
938 | * At this point, interface list manipulations are fine | |
939 | * because the driver cannot be handing us frames any | |
940 | * more and the tasklet is killed. | |
941 | */ | |
75636525 | 942 | ieee80211_remove_interfaces(local); |
5b2812e9 | 943 | |
f0706e82 JB |
944 | rtnl_unlock(); |
945 | ||
f0706e82 JB |
946 | ieee80211_clear_tx_pending(local); |
947 | sta_info_stop(local); | |
948 | rate_control_deinitialize(local); | |
e9f207f0 | 949 | debugfs_hw_del(local); |
f0706e82 | 950 | |
f0706e82 JB |
951 | if (skb_queue_len(&local->skb_queue) |
952 | || skb_queue_len(&local->skb_queue_unreliable)) | |
953 | printk(KERN_WARNING "%s: skb_queue not empty\n", | |
dd1cd4c6 | 954 | wiphy_name(local->hw.wiphy)); |
f0706e82 JB |
955 | skb_queue_purge(&local->skb_queue); |
956 | skb_queue_purge(&local->skb_queue_unreliable); | |
957 | ||
42935eca | 958 | destroy_workqueue(local->workqueue); |
f0706e82 JB |
959 | wiphy_unregister(local->hw.wiphy); |
960 | ieee80211_wep_free(local); | |
961 | ieee80211_led_exit(local); | |
2a519311 | 962 | kfree(local->int_scan_req.channels); |
f0706e82 JB |
963 | } |
964 | EXPORT_SYMBOL(ieee80211_unregister_hw); | |
965 | ||
966 | void ieee80211_free_hw(struct ieee80211_hw *hw) | |
967 | { | |
968 | struct ieee80211_local *local = hw_to_local(hw); | |
969 | ||
c771c9d8 | 970 | mutex_destroy(&local->iflist_mtx); |
f3b85252 | 971 | mutex_destroy(&local->scan_mtx); |
c771c9d8 | 972 | |
f0706e82 JB |
973 | wiphy_free(local->hw.wiphy); |
974 | } | |
975 | EXPORT_SYMBOL(ieee80211_free_hw); | |
976 | ||
f0706e82 JB |
977 | static int __init ieee80211_init(void) |
978 | { | |
979 | struct sk_buff *skb; | |
980 | int ret; | |
981 | ||
e039fa4a JB |
982 | BUILD_BUG_ON(sizeof(struct ieee80211_tx_info) > sizeof(skb->cb)); |
983 | BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, driver_data) + | |
c6a1fa12 | 984 | IEEE80211_TX_INFO_DRIVER_DATA_SIZE > sizeof(skb->cb)); |
f0706e82 | 985 | |
cccf129f FF |
986 | ret = rc80211_minstrel_init(); |
987 | if (ret) | |
988 | return ret; | |
989 | ||
4b475898 | 990 | ret = rc80211_pid_init(); |
ad018375 | 991 | if (ret) |
51cb6db0 | 992 | return ret; |
f0706e82 | 993 | |
e9f207f0 JB |
994 | ieee80211_debugfs_netdev_init(); |
995 | ||
f0706e82 JB |
996 | return 0; |
997 | } | |
998 | ||
f0706e82 JB |
999 | static void __exit ieee80211_exit(void) |
1000 | { | |
4b475898 | 1001 | rc80211_pid_exit(); |
cccf129f | 1002 | rc80211_minstrel_exit(); |
ac71c691 | 1003 | |
3b96766f JB |
1004 | /* |
1005 | * For key todo, it'll be empty by now but the work | |
1006 | * might still be scheduled. | |
1007 | */ | |
1008 | flush_scheduled_work(); | |
1009 | ||
f7a92144 LCC |
1010 | if (mesh_allocated) |
1011 | ieee80211s_stop(); | |
902acc78 | 1012 | |
e9f207f0 | 1013 | ieee80211_debugfs_netdev_exit(); |
f0706e82 JB |
1014 | } |
1015 | ||
1016 | ||
ca9938fe | 1017 | subsys_initcall(ieee80211_init); |
f0706e82 JB |
1018 | module_exit(ieee80211_exit); |
1019 | ||
1020 | MODULE_DESCRIPTION("IEEE 802.11 subsystem"); | |
1021 | MODULE_LICENSE("GPL"); |