Commit | Line | Data |
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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 | ||
d46e144b JB |
313 | sta->tx_filtered_count++; |
314 | ||
315 | /* | |
316 | * Clear the TX filter mask for this STA when sending the next | |
317 | * packet. If the STA went to power save mode, this will happen | |
f6d97104 | 318 | * when it wakes up for the next time. |
d46e144b | 319 | */ |
07346f81 | 320 | set_sta_flags(sta, WLAN_STA_CLEAR_PS_FILT); |
d46e144b JB |
321 | |
322 | /* | |
323 | * This code races in the following way: | |
324 | * | |
325 | * (1) STA sends frame indicating it will go to sleep and does so | |
326 | * (2) hardware/firmware adds STA to filter list, passes frame up | |
327 | * (3) hardware/firmware processes TX fifo and suppresses a frame | |
328 | * (4) we get TX status before having processed the frame and | |
329 | * knowing that the STA has gone to sleep. | |
330 | * | |
331 | * This is actually quite unlikely even when both those events are | |
332 | * processed from interrupts coming in quickly after one another or | |
333 | * even at the same time because we queue both TX status events and | |
334 | * RX frames to be processed by a tasklet and process them in the | |
335 | * same order that they were received or TX status last. Hence, there | |
336 | * is no race as long as the frame RX is processed before the next TX | |
337 | * status, which drivers can ensure, see below. | |
338 | * | |
339 | * Note that this can only happen if the hardware or firmware can | |
340 | * actually add STAs to the filter list, if this is done by the | |
341 | * driver in response to set_tim() (which will only reduce the race | |
342 | * this whole filtering tries to solve, not completely solve it) | |
343 | * this situation cannot happen. | |
344 | * | |
345 | * To completely solve this race drivers need to make sure that they | |
346 | * (a) don't mix the irq-safe/not irq-safe TX status/RX processing | |
347 | * functions and | |
348 | * (b) always process RX events before TX status events if ordering | |
349 | * can be unknown, for example with different interrupt status | |
350 | * bits. | |
351 | */ | |
07346f81 | 352 | if (test_sta_flags(sta, WLAN_STA_PS) && |
d46e144b | 353 | skb_queue_len(&sta->tx_filtered) < STA_MAX_TX_BUFFER) { |
d46e144b JB |
354 | skb_queue_tail(&sta->tx_filtered, skb); |
355 | return; | |
356 | } | |
357 | ||
8f77f384 JB |
358 | if (!test_sta_flags(sta, WLAN_STA_PS) && |
359 | !(info->flags & IEEE80211_TX_INTFL_RETRIED)) { | |
d46e144b | 360 | /* Software retry the packet once */ |
8f77f384 JB |
361 | info->flags |= IEEE80211_TX_INTFL_RETRIED; |
362 | ieee80211_add_pending_skb(local, skb); | |
d46e144b JB |
363 | return; |
364 | } | |
365 | ||
f4ea83dd | 366 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
d46e144b JB |
367 | if (net_ratelimit()) |
368 | printk(KERN_DEBUG "%s: dropped TX filtered frame, " | |
369 | "queue_len=%d PS=%d @%lu\n", | |
370 | wiphy_name(local->hw.wiphy), | |
371 | skb_queue_len(&sta->tx_filtered), | |
07346f81 | 372 | !!test_sta_flags(sta, WLAN_STA_PS), jiffies); |
f4ea83dd | 373 | #endif |
d46e144b JB |
374 | dev_kfree_skb(skb); |
375 | } | |
376 | ||
e039fa4a | 377 | void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb) |
f0706e82 JB |
378 | { |
379 | struct sk_buff *skb2; | |
380 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; | |
381 | struct ieee80211_local *local = hw_to_local(hw); | |
e039fa4a | 382 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
f0706e82 | 383 | u16 frag, type; |
429a3805 | 384 | __le16 fc; |
4b7679a5 | 385 | struct ieee80211_supported_band *sband; |
b306f453 JB |
386 | struct ieee80211_tx_status_rtap_hdr *rthdr; |
387 | struct ieee80211_sub_if_data *sdata; | |
3d30d949 | 388 | struct net_device *prev_dev = NULL; |
429a3805 | 389 | struct sta_info *sta; |
e6a9854b JB |
390 | int retry_count = -1, i; |
391 | ||
392 | for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) { | |
393 | /* the HW cannot have attempted that rate */ | |
394 | if (i >= hw->max_rates) { | |
395 | info->status.rates[i].idx = -1; | |
396 | info->status.rates[i].count = 0; | |
397 | } | |
398 | ||
399 | retry_count += info->status.rates[i].count; | |
400 | } | |
401 | if (retry_count < 0) | |
402 | retry_count = 0; | |
f0706e82 | 403 | |
d0709a65 JB |
404 | rcu_read_lock(); |
405 | ||
e6a9854b JB |
406 | sband = local->hw.wiphy->bands[info->band]; |
407 | ||
95dac040 JB |
408 | sta = sta_info_get(local, hdr->addr1); |
409 | ||
410 | if (sta) { | |
e6a9854b | 411 | if (!(info->flags & IEEE80211_TX_STAT_ACK) && |
95dac040 JB |
412 | test_sta_flags(sta, WLAN_STA_PS)) { |
413 | /* | |
414 | * The STA is in power save mode, so assume | |
415 | * that this TX packet failed because of that. | |
416 | */ | |
417 | ieee80211_handle_filtered_frame(local, sta, skb); | |
418 | rcu_read_unlock(); | |
419 | return; | |
f0706e82 | 420 | } |
f0706e82 | 421 | |
95dac040 JB |
422 | fc = hdr->frame_control; |
423 | ||
424 | if ((info->flags & IEEE80211_TX_STAT_AMPDU_NO_BACK) && | |
425 | (ieee80211_is_data_qos(fc))) { | |
426 | u16 tid, ssn; | |
427 | u8 *qc; | |
429a3805 | 428 | |
429a3805 RR |
429 | qc = ieee80211_get_qos_ctl(hdr); |
430 | tid = qc[0] & 0xf; | |
431 | ssn = ((le16_to_cpu(hdr->seq_ctrl) + 0x10) | |
432 | & IEEE80211_SCTL_SEQ); | |
f698d856 | 433 | ieee80211_send_bar(sta->sdata, hdr->addr1, |
429a3805 RR |
434 | tid, ssn); |
435 | } | |
429a3805 | 436 | |
95dac040 | 437 | if (info->flags & IEEE80211_TX_STAT_TX_FILTERED) { |
e039fa4a | 438 | ieee80211_handle_filtered_frame(local, sta, skb); |
d0709a65 | 439 | rcu_read_unlock(); |
f0706e82 | 440 | return; |
95dac040 | 441 | } else { |
e6a9854b | 442 | if (!(info->flags & IEEE80211_TX_STAT_ACK)) |
95dac040 | 443 | sta->tx_retry_failed++; |
e6a9854b | 444 | sta->tx_retry_count += retry_count; |
f0706e82 | 445 | } |
95dac040 | 446 | |
4b7679a5 | 447 | rate_control_tx_status(local, sband, sta, skb); |
95dac040 | 448 | } |
f0706e82 | 449 | |
d0709a65 JB |
450 | rcu_read_unlock(); |
451 | ||
f0706e82 JB |
452 | ieee80211_led_tx(local, 0); |
453 | ||
454 | /* SNMP counters | |
455 | * Fragments are passed to low-level drivers as separate skbs, so these | |
456 | * are actually fragments, not frames. Update frame counters only for | |
457 | * the first fragment of the frame. */ | |
458 | ||
459 | frag = le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_FRAG; | |
460 | type = le16_to_cpu(hdr->frame_control) & IEEE80211_FCTL_FTYPE; | |
461 | ||
e039fa4a | 462 | if (info->flags & IEEE80211_TX_STAT_ACK) { |
f0706e82 JB |
463 | if (frag == 0) { |
464 | local->dot11TransmittedFrameCount++; | |
465 | if (is_multicast_ether_addr(hdr->addr1)) | |
466 | local->dot11MulticastTransmittedFrameCount++; | |
e6a9854b | 467 | if (retry_count > 0) |
f0706e82 | 468 | local->dot11RetryCount++; |
e6a9854b | 469 | if (retry_count > 1) |
f0706e82 JB |
470 | local->dot11MultipleRetryCount++; |
471 | } | |
472 | ||
473 | /* This counter shall be incremented for an acknowledged MPDU | |
474 | * with an individual address in the address 1 field or an MPDU | |
475 | * with a multicast address in the address 1 field of type Data | |
476 | * or Management. */ | |
477 | if (!is_multicast_ether_addr(hdr->addr1) || | |
478 | type == IEEE80211_FTYPE_DATA || | |
479 | type == IEEE80211_FTYPE_MGMT) | |
480 | local->dot11TransmittedFragmentCount++; | |
481 | } else { | |
482 | if (frag == 0) | |
483 | local->dot11FailedCount++; | |
484 | } | |
485 | ||
b306f453 JB |
486 | /* this was a transmitted frame, but now we want to reuse it */ |
487 | skb_orphan(skb); | |
488 | ||
3d30d949 MW |
489 | /* |
490 | * This is a bit racy but we can avoid a lot of work | |
491 | * with this test... | |
492 | */ | |
493 | if (!local->monitors && !local->cooked_mntrs) { | |
f0706e82 JB |
494 | dev_kfree_skb(skb); |
495 | return; | |
496 | } | |
497 | ||
b306f453 | 498 | /* send frame to monitor interfaces now */ |
f0706e82 | 499 | |
b306f453 JB |
500 | if (skb_headroom(skb) < sizeof(*rthdr)) { |
501 | printk(KERN_ERR "ieee80211_tx_status: headroom too small\n"); | |
f0706e82 JB |
502 | dev_kfree_skb(skb); |
503 | return; | |
504 | } | |
f0706e82 | 505 | |
988c0f72 | 506 | rthdr = (struct ieee80211_tx_status_rtap_hdr *) |
b306f453 JB |
507 | skb_push(skb, sizeof(*rthdr)); |
508 | ||
509 | memset(rthdr, 0, sizeof(*rthdr)); | |
510 | rthdr->hdr.it_len = cpu_to_le16(sizeof(*rthdr)); | |
511 | rthdr->hdr.it_present = | |
512 | cpu_to_le32((1 << IEEE80211_RADIOTAP_TX_FLAGS) | | |
e6a9854b JB |
513 | (1 << IEEE80211_RADIOTAP_DATA_RETRIES) | |
514 | (1 << IEEE80211_RADIOTAP_RATE)); | |
b306f453 | 515 | |
e039fa4a | 516 | if (!(info->flags & IEEE80211_TX_STAT_ACK) && |
b306f453 JB |
517 | !is_multicast_ether_addr(hdr->addr1)) |
518 | rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_FAIL); | |
519 | ||
e6a9854b JB |
520 | /* |
521 | * XXX: Once radiotap gets the bitmap reset thing the vendor | |
522 | * extensions proposal contains, we can actually report | |
523 | * the whole set of tries we did. | |
524 | */ | |
525 | if ((info->status.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) || | |
526 | (info->status.rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT)) | |
b306f453 | 527 | rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_CTS); |
e6a9854b | 528 | else if (info->status.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) |
b306f453 | 529 | rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_RTS); |
e6a9854b JB |
530 | if (info->status.rates[0].idx >= 0 && |
531 | !(info->status.rates[0].flags & IEEE80211_TX_RC_MCS)) | |
532 | rthdr->rate = sband->bitrates[ | |
533 | info->status.rates[0].idx].bitrate / 5; | |
b306f453 | 534 | |
e6a9854b JB |
535 | /* for now report the total retry_count */ |
536 | rthdr->data_retries = retry_count; | |
b306f453 | 537 | |
3d30d949 MW |
538 | /* XXX: is this sufficient for BPF? */ |
539 | skb_set_mac_header(skb, 0); | |
540 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
541 | skb->pkt_type = PACKET_OTHERHOST; | |
542 | skb->protocol = htons(ETH_P_802_2); | |
543 | memset(skb->cb, 0, sizeof(skb->cb)); | |
544 | ||
79010420 | 545 | rcu_read_lock(); |
79010420 | 546 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { |
05c914fe | 547 | if (sdata->vif.type == NL80211_IFTYPE_MONITOR) { |
b306f453 JB |
548 | if (!netif_running(sdata->dev)) |
549 | continue; | |
3d30d949 MW |
550 | |
551 | if (prev_dev) { | |
79010420 | 552 | skb2 = skb_clone(skb, GFP_ATOMIC); |
3d30d949 MW |
553 | if (skb2) { |
554 | skb2->dev = prev_dev; | |
555 | netif_rx(skb2); | |
556 | } | |
557 | } | |
558 | ||
559 | prev_dev = sdata->dev; | |
b306f453 JB |
560 | } |
561 | } | |
3d30d949 MW |
562 | if (prev_dev) { |
563 | skb->dev = prev_dev; | |
564 | netif_rx(skb); | |
565 | skb = NULL; | |
566 | } | |
79010420 | 567 | rcu_read_unlock(); |
3d30d949 | 568 | dev_kfree_skb(skb); |
f0706e82 JB |
569 | } |
570 | EXPORT_SYMBOL(ieee80211_tx_status); | |
571 | ||
f2753ddb JB |
572 | static void ieee80211_restart_work(struct work_struct *work) |
573 | { | |
574 | struct ieee80211_local *local = | |
575 | container_of(work, struct ieee80211_local, restart_work); | |
576 | ||
577 | rtnl_lock(); | |
578 | ieee80211_reconfig(local); | |
579 | rtnl_unlock(); | |
580 | } | |
581 | ||
582 | void ieee80211_restart_hw(struct ieee80211_hw *hw) | |
583 | { | |
584 | struct ieee80211_local *local = hw_to_local(hw); | |
585 | ||
586 | /* use this reason, __ieee80211_resume will unblock it */ | |
587 | ieee80211_stop_queues_by_reason(hw, | |
588 | IEEE80211_QUEUE_STOP_REASON_SUSPEND); | |
589 | ||
590 | schedule_work(&local->restart_work); | |
591 | } | |
592 | EXPORT_SYMBOL(ieee80211_restart_hw); | |
593 | ||
f0706e82 JB |
594 | struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len, |
595 | const struct ieee80211_ops *ops) | |
596 | { | |
f0706e82 | 597 | struct ieee80211_local *local; |
96f5e66e | 598 | int priv_size, i; |
f0706e82 JB |
599 | struct wiphy *wiphy; |
600 | ||
601 | /* Ensure 32-byte alignment of our private data and hw private data. | |
602 | * We use the wiphy priv data for both our ieee80211_local and for | |
603 | * the driver's private data | |
604 | * | |
605 | * In memory it'll be like this: | |
606 | * | |
607 | * +-------------------------+ | |
608 | * | struct wiphy | | |
609 | * +-------------------------+ | |
610 | * | struct ieee80211_local | | |
611 | * +-------------------------+ | |
612 | * | driver's private data | | |
613 | * +-------------------------+ | |
614 | * | |
615 | */ | |
1ce8e7b5 | 616 | priv_size = ALIGN(sizeof(*local), NETDEV_ALIGN) + priv_data_len; |
f0706e82 JB |
617 | |
618 | wiphy = wiphy_new(&mac80211_config_ops, priv_size); | |
619 | ||
620 | if (!wiphy) | |
621 | return NULL; | |
622 | ||
a272a720 | 623 | wiphy->netnsok = true; |
f0706e82 | 624 | wiphy->privid = mac80211_wiphy_privid; |
18a83659 | 625 | |
00d3f14c JB |
626 | /* Yes, putting cfg80211_bss into ieee80211_bss is a hack */ |
627 | wiphy->bss_priv_size = sizeof(struct ieee80211_bss) - | |
628 | sizeof(struct cfg80211_bss); | |
f0706e82 JB |
629 | |
630 | local = wiphy_priv(wiphy); | |
de95a54b | 631 | |
f0706e82 JB |
632 | local->hw.wiphy = wiphy; |
633 | ||
1ce8e7b5 | 634 | local->hw.priv = (char *)local + ALIGN(sizeof(*local), NETDEV_ALIGN); |
f0706e82 | 635 | |
4480f15c | 636 | BUG_ON(!ops->tx); |
4150c572 JB |
637 | BUG_ON(!ops->start); |
638 | BUG_ON(!ops->stop); | |
4480f15c JB |
639 | BUG_ON(!ops->config); |
640 | BUG_ON(!ops->add_interface); | |
4150c572 JB |
641 | BUG_ON(!ops->remove_interface); |
642 | BUG_ON(!ops->configure_filter); | |
f0706e82 JB |
643 | local->ops = ops; |
644 | ||
e6a9854b JB |
645 | /* set up some defaults */ |
646 | local->hw.queues = 1; | |
647 | local->hw.max_rates = 1; | |
b9a5f8ca JM |
648 | local->hw.conf.long_frame_max_tx_count = wiphy->retry_long; |
649 | local->hw.conf.short_frame_max_tx_count = wiphy->retry_short; | |
e8975581 | 650 | local->hw.conf.radio_enabled = true; |
c428c892 | 651 | local->user_power_level = -1; |
f0706e82 | 652 | |
79010420 | 653 | INIT_LIST_HEAD(&local->interfaces); |
c771c9d8 | 654 | mutex_init(&local->iflist_mtx); |
f3b85252 | 655 | mutex_init(&local->scan_mtx); |
f0706e82 | 656 | |
b16bd15c | 657 | spin_lock_init(&local->key_lock); |
3b8d81e0 | 658 | spin_lock_init(&local->filter_lock); |
ce7c9111 KV |
659 | spin_lock_init(&local->queue_stop_reason_lock); |
660 | ||
c2b13452 | 661 | INIT_DELAYED_WORK(&local->scan_work, ieee80211_scan_work); |
f0706e82 | 662 | |
f2753ddb JB |
663 | INIT_WORK(&local->restart_work, ieee80211_restart_work); |
664 | ||
520eb820 KV |
665 | INIT_WORK(&local->dynamic_ps_enable_work, |
666 | ieee80211_dynamic_ps_enable_work); | |
667 | INIT_WORK(&local->dynamic_ps_disable_work, | |
668 | ieee80211_dynamic_ps_disable_work); | |
669 | setup_timer(&local->dynamic_ps_timer, | |
670 | ieee80211_dynamic_ps_timer, (unsigned long) local); | |
671 | ||
f0706e82 JB |
672 | sta_info_init(local); |
673 | ||
2a577d98 JB |
674 | for (i = 0; i < IEEE80211_MAX_QUEUES; i++) |
675 | skb_queue_head_init(&local->pending[i]); | |
f0706e82 JB |
676 | tasklet_init(&local->tx_pending_tasklet, ieee80211_tx_pending, |
677 | (unsigned long)local); | |
678 | tasklet_disable(&local->tx_pending_tasklet); | |
679 | ||
680 | tasklet_init(&local->tasklet, | |
681 | ieee80211_tasklet_handler, | |
682 | (unsigned long) local); | |
683 | tasklet_disable(&local->tasklet); | |
684 | ||
685 | skb_queue_head_init(&local->skb_queue); | |
686 | skb_queue_head_init(&local->skb_queue_unreliable); | |
687 | ||
cd8ffc80 JB |
688 | spin_lock_init(&local->ampdu_lock); |
689 | ||
f0706e82 JB |
690 | return local_to_hw(local); |
691 | } | |
692 | EXPORT_SYMBOL(ieee80211_alloc_hw); | |
693 | ||
694 | int ieee80211_register_hw(struct ieee80211_hw *hw) | |
695 | { | |
696 | struct ieee80211_local *local = hw_to_local(hw); | |
f0706e82 | 697 | int result; |
8318d78a | 698 | enum ieee80211_band band; |
de95a54b | 699 | int channels, i, j, max_bitrates; |
5ef2d41a | 700 | bool supp_ht; |
25e47c18 JB |
701 | static const u32 cipher_suites[] = { |
702 | WLAN_CIPHER_SUITE_WEP40, | |
703 | WLAN_CIPHER_SUITE_WEP104, | |
704 | WLAN_CIPHER_SUITE_TKIP, | |
705 | WLAN_CIPHER_SUITE_CCMP, | |
706 | ||
707 | /* keep last -- depends on hw flags! */ | |
708 | WLAN_CIPHER_SUITE_AES_CMAC | |
709 | }; | |
8318d78a JB |
710 | |
711 | /* | |
712 | * generic code guarantees at least one band, | |
713 | * set this very early because much code assumes | |
714 | * that hw.conf.channel is assigned | |
715 | */ | |
2a519311 | 716 | channels = 0; |
de95a54b | 717 | max_bitrates = 0; |
5ef2d41a | 718 | supp_ht = false; |
8318d78a JB |
719 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { |
720 | struct ieee80211_supported_band *sband; | |
721 | ||
722 | sband = local->hw.wiphy->bands[band]; | |
de95a54b JB |
723 | if (!sband) |
724 | continue; | |
725 | if (!local->oper_channel) { | |
8318d78a JB |
726 | /* init channel we're on */ |
727 | local->hw.conf.channel = | |
58905ca5 JB |
728 | local->oper_channel = &sband->channels[0]; |
729 | local->hw.conf.channel_type = NL80211_CHAN_NO_HT; | |
8318d78a | 730 | } |
de95a54b JB |
731 | channels += sband->n_channels; |
732 | ||
733 | if (max_bitrates < sband->n_bitrates) | |
734 | max_bitrates = sband->n_bitrates; | |
5ef2d41a | 735 | supp_ht = supp_ht || sband->ht_cap.ht_supported; |
8318d78a | 736 | } |
f0706e82 | 737 | |
2a519311 JB |
738 | local->int_scan_req.n_channels = channels; |
739 | local->int_scan_req.channels = kzalloc(sizeof(void *) * channels, GFP_KERNEL); | |
740 | if (!local->int_scan_req.channels) | |
741 | return -ENOMEM; | |
742 | ||
f59ac048 LR |
743 | /* if low-level driver supports AP, we also support VLAN */ |
744 | if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) | |
745 | local->hw.wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP_VLAN); | |
746 | ||
747 | /* mac80211 always supports monitor */ | |
748 | local->hw.wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR); | |
749 | ||
77965c97 JB |
750 | if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM) |
751 | local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM; | |
752 | else if (local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC) | |
753 | local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC; | |
754 | ||
de95a54b JB |
755 | /* |
756 | * Calculate scan IE length -- we need this to alloc | |
757 | * memory and to subtract from the driver limit. It | |
758 | * includes the (extended) supported rates and HT | |
759 | * information -- SSID is the driver's responsibility. | |
760 | */ | |
761 | local->scan_ies_len = 4 + max_bitrates; /* (ext) supp rates */ | |
5ef2d41a JB |
762 | if (supp_ht) |
763 | local->scan_ies_len += 2 + sizeof(struct ieee80211_ht_cap); | |
de95a54b JB |
764 | |
765 | if (!local->ops->hw_scan) { | |
766 | /* For hw_scan, driver needs to set these up. */ | |
767 | local->hw.wiphy->max_scan_ssids = 4; | |
768 | local->hw.wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN; | |
769 | } | |
770 | ||
771 | /* | |
772 | * If the driver supports any scan IEs, then assume the | |
773 | * limit includes the IEs mac80211 will add, otherwise | |
774 | * leave it at zero and let the driver sort it out; we | |
775 | * still pass our IEs to the driver but userspace will | |
776 | * not be allowed to in that case. | |
777 | */ | |
778 | if (local->hw.wiphy->max_scan_ie_len) | |
779 | local->hw.wiphy->max_scan_ie_len -= local->scan_ies_len; | |
780 | ||
25e47c18 JB |
781 | local->hw.wiphy->cipher_suites = cipher_suites; |
782 | local->hw.wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites); | |
783 | if (!(local->hw.flags & IEEE80211_HW_MFP_CAPABLE)) | |
784 | local->hw.wiphy->n_cipher_suites--; | |
785 | ||
f0706e82 JB |
786 | result = wiphy_register(local->hw.wiphy); |
787 | if (result < 0) | |
2a519311 | 788 | goto fail_wiphy_register; |
f0706e82 | 789 | |
e2530083 JB |
790 | /* |
791 | * We use the number of queues for feature tests (QoS, HT) internally | |
792 | * so restrict them appropriately. | |
793 | */ | |
e2530083 JB |
794 | if (hw->queues > IEEE80211_MAX_QUEUES) |
795 | hw->queues = IEEE80211_MAX_QUEUES; | |
e2530083 | 796 | |
4ada424d | 797 | local->hw.workqueue = |
30d3ef41 | 798 | create_singlethread_workqueue(wiphy_name(local->hw.wiphy)); |
f0706e82 JB |
799 | if (!local->hw.workqueue) { |
800 | result = -ENOMEM; | |
801 | goto fail_workqueue; | |
802 | } | |
803 | ||
b306f453 JB |
804 | /* |
805 | * The hardware needs headroom for sending the frame, | |
806 | * and we need some headroom for passing the frame to monitor | |
807 | * interfaces, but never both at the same time. | |
808 | */ | |
33ccad35 JB |
809 | local->tx_headroom = max_t(unsigned int , local->hw.extra_tx_headroom, |
810 | sizeof(struct ieee80211_tx_status_rtap_hdr)); | |
b306f453 | 811 | |
e9f207f0 JB |
812 | debugfs_hw_add(local); |
813 | ||
ea95bba4 TW |
814 | if (local->hw.max_listen_interval == 0) |
815 | local->hw.max_listen_interval = 1; | |
816 | ||
817 | local->hw.conf.listen_interval = local->hw.max_listen_interval; | |
818 | ||
f0706e82 JB |
819 | result = sta_info_start(local); |
820 | if (result < 0) | |
821 | goto fail_sta_info; | |
822 | ||
d4c4a9a1 AJ |
823 | result = ieee80211_wep_init(local); |
824 | if (result < 0) { | |
825 | printk(KERN_DEBUG "%s: Failed to initialize wep: %d\n", | |
826 | wiphy_name(local->hw.wiphy), result); | |
827 | goto fail_wep; | |
828 | } | |
829 | ||
f0706e82 | 830 | rtnl_lock(); |
f0706e82 | 831 | |
830f9038 JB |
832 | result = ieee80211_init_rate_ctrl_alg(local, |
833 | hw->rate_control_algorithm); | |
f0706e82 JB |
834 | if (result < 0) { |
835 | printk(KERN_DEBUG "%s: Failed to initialize rate control " | |
dd1cd4c6 | 836 | "algorithm\n", wiphy_name(local->hw.wiphy)); |
f0706e82 JB |
837 | goto fail_rate; |
838 | } | |
839 | ||
8dffff21 JB |
840 | /* add one default STA interface if supported */ |
841 | if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_STATION)) { | |
842 | result = ieee80211_if_add(local, "wlan%d", NULL, | |
843 | NL80211_IFTYPE_STATION, NULL); | |
844 | if (result) | |
845 | printk(KERN_WARNING "%s: Failed to add default virtual iface\n", | |
846 | wiphy_name(local->hw.wiphy)); | |
847 | } | |
f0706e82 | 848 | |
f0706e82 JB |
849 | rtnl_unlock(); |
850 | ||
851 | ieee80211_led_init(local); | |
852 | ||
2a519311 JB |
853 | /* alloc internal scan request */ |
854 | i = 0; | |
855 | local->int_scan_req.ssids = &local->scan_ssid; | |
856 | local->int_scan_req.n_ssids = 1; | |
857 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { | |
858 | if (!hw->wiphy->bands[band]) | |
859 | continue; | |
860 | for (j = 0; j < hw->wiphy->bands[band]->n_channels; j++) { | |
861 | local->int_scan_req.channels[i] = | |
862 | &hw->wiphy->bands[band]->channels[j]; | |
863 | i++; | |
864 | } | |
865 | } | |
866 | ||
10f644a4 JB |
867 | local->network_latency_notifier.notifier_call = |
868 | ieee80211_max_network_latency; | |
869 | result = pm_qos_add_notifier(PM_QOS_NETWORK_LATENCY, | |
870 | &local->network_latency_notifier); | |
871 | ||
872 | if (result) { | |
873 | rtnl_lock(); | |
874 | goto fail_pm_qos; | |
875 | } | |
876 | ||
f0706e82 JB |
877 | return 0; |
878 | ||
10f644a4 JB |
879 | fail_pm_qos: |
880 | ieee80211_led_exit(local); | |
881 | ieee80211_remove_interfaces(local); | |
10f644a4 | 882 | fail_rate: |
f0706e82 | 883 | rtnl_unlock(); |
d4c4a9a1 | 884 | ieee80211_wep_free(local); |
aba74530 | 885 | fail_wep: |
f0706e82 | 886 | sta_info_stop(local); |
10f644a4 | 887 | fail_sta_info: |
e9f207f0 | 888 | debugfs_hw_del(local); |
f0706e82 | 889 | destroy_workqueue(local->hw.workqueue); |
10f644a4 | 890 | fail_workqueue: |
f0706e82 | 891 | wiphy_unregister(local->hw.wiphy); |
10f644a4 | 892 | fail_wiphy_register: |
2a519311 | 893 | kfree(local->int_scan_req.channels); |
f0706e82 JB |
894 | return result; |
895 | } | |
896 | EXPORT_SYMBOL(ieee80211_register_hw); | |
897 | ||
f0706e82 JB |
898 | void ieee80211_unregister_hw(struct ieee80211_hw *hw) |
899 | { | |
900 | struct ieee80211_local *local = hw_to_local(hw); | |
f0706e82 JB |
901 | |
902 | tasklet_kill(&local->tx_pending_tasklet); | |
903 | tasklet_kill(&local->tasklet); | |
904 | ||
10f644a4 JB |
905 | pm_qos_remove_notifier(PM_QOS_NETWORK_LATENCY, |
906 | &local->network_latency_notifier); | |
907 | ||
f0706e82 JB |
908 | rtnl_lock(); |
909 | ||
79010420 JB |
910 | /* |
911 | * At this point, interface list manipulations are fine | |
912 | * because the driver cannot be handing us frames any | |
913 | * more and the tasklet is killed. | |
914 | */ | |
75636525 | 915 | ieee80211_remove_interfaces(local); |
5b2812e9 | 916 | |
f0706e82 JB |
917 | rtnl_unlock(); |
918 | ||
f0706e82 JB |
919 | ieee80211_clear_tx_pending(local); |
920 | sta_info_stop(local); | |
921 | rate_control_deinitialize(local); | |
e9f207f0 | 922 | debugfs_hw_del(local); |
f0706e82 | 923 | |
f0706e82 JB |
924 | if (skb_queue_len(&local->skb_queue) |
925 | || skb_queue_len(&local->skb_queue_unreliable)) | |
926 | printk(KERN_WARNING "%s: skb_queue not empty\n", | |
dd1cd4c6 | 927 | wiphy_name(local->hw.wiphy)); |
f0706e82 JB |
928 | skb_queue_purge(&local->skb_queue); |
929 | skb_queue_purge(&local->skb_queue_unreliable); | |
930 | ||
931 | destroy_workqueue(local->hw.workqueue); | |
932 | wiphy_unregister(local->hw.wiphy); | |
933 | ieee80211_wep_free(local); | |
934 | ieee80211_led_exit(local); | |
2a519311 | 935 | kfree(local->int_scan_req.channels); |
f0706e82 JB |
936 | } |
937 | EXPORT_SYMBOL(ieee80211_unregister_hw); | |
938 | ||
939 | void ieee80211_free_hw(struct ieee80211_hw *hw) | |
940 | { | |
941 | struct ieee80211_local *local = hw_to_local(hw); | |
942 | ||
c771c9d8 | 943 | mutex_destroy(&local->iflist_mtx); |
f3b85252 | 944 | mutex_destroy(&local->scan_mtx); |
c771c9d8 | 945 | |
f0706e82 JB |
946 | wiphy_free(local->hw.wiphy); |
947 | } | |
948 | EXPORT_SYMBOL(ieee80211_free_hw); | |
949 | ||
f0706e82 JB |
950 | static int __init ieee80211_init(void) |
951 | { | |
952 | struct sk_buff *skb; | |
953 | int ret; | |
954 | ||
e039fa4a JB |
955 | BUILD_BUG_ON(sizeof(struct ieee80211_tx_info) > sizeof(skb->cb)); |
956 | BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, driver_data) + | |
c6a1fa12 | 957 | IEEE80211_TX_INFO_DRIVER_DATA_SIZE > sizeof(skb->cb)); |
f0706e82 | 958 | |
cccf129f FF |
959 | ret = rc80211_minstrel_init(); |
960 | if (ret) | |
961 | return ret; | |
962 | ||
4b475898 | 963 | ret = rc80211_pid_init(); |
ad018375 | 964 | if (ret) |
51cb6db0 | 965 | return ret; |
f0706e82 | 966 | |
e9f207f0 JB |
967 | ieee80211_debugfs_netdev_init(); |
968 | ||
f0706e82 JB |
969 | return 0; |
970 | } | |
971 | ||
f0706e82 JB |
972 | static void __exit ieee80211_exit(void) |
973 | { | |
4b475898 | 974 | rc80211_pid_exit(); |
cccf129f | 975 | rc80211_minstrel_exit(); |
ac71c691 | 976 | |
3b96766f JB |
977 | /* |
978 | * For key todo, it'll be empty by now but the work | |
979 | * might still be scheduled. | |
980 | */ | |
981 | flush_scheduled_work(); | |
982 | ||
f7a92144 LCC |
983 | if (mesh_allocated) |
984 | ieee80211s_stop(); | |
902acc78 | 985 | |
e9f207f0 | 986 | ieee80211_debugfs_netdev_exit(); |
f0706e82 JB |
987 | } |
988 | ||
989 | ||
ca9938fe | 990 | subsys_initcall(ieee80211_init); |
f0706e82 JB |
991 | module_exit(ieee80211_exit); |
992 | ||
993 | MODULE_DESCRIPTION("IEEE 802.11 subsystem"); | |
994 | MODULE_LICENSE("GPL"); |