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 | |
0d143fe1 | 53 | void ieee80211_configure_filter(struct ieee80211_local *local) |
4150c572 | 54 | { |
3ac64bee | 55 | u64 mc; |
4150c572 JB |
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 | ||
3ac64bee | 65 | if (local->monitors || local->scanning) |
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 | 79 | |
e3b90ca2 IP |
80 | if (local->fif_pspoll) |
81 | new_flags |= FIF_PSPOLL; | |
82 | ||
3ac64bee | 83 | spin_lock_bh(&local->filter_lock); |
4150c572 JB |
84 | changed_flags = local->filter_flags ^ new_flags; |
85 | ||
3ac64bee JB |
86 | mc = drv_prepare_multicast(local, local->mc_count, local->mc_list); |
87 | spin_unlock_bh(&local->filter_lock); | |
88 | ||
4150c572 JB |
89 | /* be a bit nasty */ |
90 | new_flags |= (1<<31); | |
91 | ||
3ac64bee | 92 | drv_configure_filter(local, changed_flags, &new_flags, mc); |
4150c572 JB |
93 | |
94 | WARN_ON(new_flags & (1<<31)); | |
95 | ||
96 | local->filter_flags = new_flags & ~(1<<31); | |
97 | } | |
98 | ||
3ac64bee JB |
99 | static void ieee80211_reconfig_filter(struct work_struct *work) |
100 | { | |
101 | struct ieee80211_local *local = | |
102 | container_of(work, struct ieee80211_local, reconfig_filter); | |
103 | ||
104 | ieee80211_configure_filter(local); | |
105 | } | |
106 | ||
e8975581 | 107 | int ieee80211_hw_config(struct ieee80211_local *local, u32 changed) |
b2c258fb | 108 | { |
58905ca5 | 109 | struct ieee80211_channel *chan, *scan_chan; |
b2c258fb | 110 | int ret = 0; |
e8975581 | 111 | int power; |
094d05dc | 112 | enum nl80211_channel_type channel_type; |
f0706e82 | 113 | |
cb121bad JB |
114 | might_sleep(); |
115 | ||
58905ca5 JB |
116 | scan_chan = local->scan_channel; |
117 | ||
118 | if (scan_chan) { | |
119 | chan = scan_chan; | |
094d05dc | 120 | channel_type = NL80211_CHAN_NO_HT; |
72bdcf34 | 121 | } else { |
b2c258fb | 122 | chan = local->oper_channel; |
094d05dc | 123 | channel_type = local->oper_channel_type; |
72bdcf34 | 124 | } |
f0706e82 | 125 | |
72bdcf34 | 126 | if (chan != local->hw.conf.channel || |
4797938c | 127 | channel_type != local->hw.conf.channel_type) { |
e8975581 | 128 | local->hw.conf.channel = chan; |
4797938c | 129 | local->hw.conf.channel_type = channel_type; |
e8975581 JB |
130 | changed |= IEEE80211_CONF_CHANGE_CHANNEL; |
131 | } | |
8318d78a | 132 | |
58905ca5 | 133 | if (scan_chan) |
e8975581 | 134 | power = chan->max_power; |
8318d78a | 135 | else |
a8302de9 VT |
136 | power = local->power_constr_level ? |
137 | (chan->max_power - local->power_constr_level) : | |
138 | chan->max_power; | |
139 | ||
47afbaf5 | 140 | if (local->user_power_level >= 0) |
a8302de9 VT |
141 | power = min(power, local->user_power_level); |
142 | ||
e8975581 JB |
143 | if (local->hw.conf.power_level != power) { |
144 | changed |= IEEE80211_CONF_CHANGE_POWER; | |
145 | local->hw.conf.power_level = power; | |
146 | } | |
b2c258fb | 147 | |
e8975581 | 148 | if (changed && local->open_count) { |
24487981 | 149 | ret = drv_config(local, changed); |
d73782fd | 150 | /* |
447107fb | 151 | * Goal: |
d73782fd JB |
152 | * HW reconfiguration should never fail, the driver has told |
153 | * us what it can support so it should live up to that promise. | |
447107fb RC |
154 | * |
155 | * Current status: | |
156 | * rfkill is not integrated with mac80211 and a | |
157 | * configuration command can thus fail if hardware rfkill | |
158 | * is enabled | |
159 | * | |
160 | * FIXME: integrate rfkill with mac80211 and then add this | |
161 | * WARN_ON() back | |
162 | * | |
d73782fd | 163 | */ |
447107fb | 164 | /* WARN_ON(ret); */ |
d73782fd | 165 | } |
f0706e82 | 166 | |
b2c258fb JB |
167 | return ret; |
168 | } | |
f0706e82 | 169 | |
471b3efd JB |
170 | void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, |
171 | u32 changed) | |
d9430a32 | 172 | { |
471b3efd | 173 | struct ieee80211_local *local = sdata->local; |
9cef8737 | 174 | static const u8 zero[ETH_ALEN] = { 0 }; |
471b3efd JB |
175 | |
176 | if (!changed) | |
177 | return; | |
178 | ||
9cef8737 JB |
179 | if (sdata->vif.type == NL80211_IFTYPE_STATION) { |
180 | /* | |
181 | * While not associated, claim a BSSID of all-zeroes | |
182 | * so that drivers don't do any weird things with the | |
183 | * BSSID at that time. | |
184 | */ | |
185 | if (sdata->vif.bss_conf.assoc) | |
186 | sdata->vif.bss_conf.bssid = sdata->u.mgd.bssid; | |
187 | else | |
188 | sdata->vif.bss_conf.bssid = zero; | |
189 | } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) | |
2d0ddec5 JB |
190 | sdata->vif.bss_conf.bssid = sdata->u.ibss.bssid; |
191 | else if (sdata->vif.type == NL80211_IFTYPE_AP) | |
192 | sdata->vif.bss_conf.bssid = sdata->dev->dev_addr; | |
193 | else if (ieee80211_vif_is_mesh(&sdata->vif)) { | |
2d0ddec5 JB |
194 | sdata->vif.bss_conf.bssid = zero; |
195 | } else { | |
196 | WARN_ON(1); | |
197 | return; | |
198 | } | |
199 | ||
200 | switch (sdata->vif.type) { | |
201 | case NL80211_IFTYPE_AP: | |
202 | case NL80211_IFTYPE_ADHOC: | |
203 | case NL80211_IFTYPE_MESH_POINT: | |
204 | break; | |
205 | default: | |
206 | /* do not warn to simplify caller in scan.c */ | |
207 | changed &= ~BSS_CHANGED_BEACON_ENABLED; | |
208 | if (WARN_ON(changed & BSS_CHANGED_BEACON)) | |
209 | return; | |
210 | break; | |
211 | } | |
212 | ||
213 | if (changed & BSS_CHANGED_BEACON_ENABLED) { | |
97af7432 BC |
214 | if (local->quiescing || !netif_running(sdata->dev) || |
215 | test_bit(SCAN_SW_SCANNING, &local->scanning)) { | |
2d0ddec5 JB |
216 | sdata->vif.bss_conf.enable_beacon = false; |
217 | } else { | |
218 | /* | |
219 | * Beacon should be enabled, but AP mode must | |
220 | * check whether there is a beacon configured. | |
221 | */ | |
222 | switch (sdata->vif.type) { | |
223 | case NL80211_IFTYPE_AP: | |
224 | sdata->vif.bss_conf.enable_beacon = | |
225 | !!rcu_dereference(sdata->u.ap.beacon); | |
226 | break; | |
227 | case NL80211_IFTYPE_ADHOC: | |
228 | sdata->vif.bss_conf.enable_beacon = | |
229 | !!rcu_dereference(sdata->u.ibss.presp); | |
230 | break; | |
231 | case NL80211_IFTYPE_MESH_POINT: | |
232 | sdata->vif.bss_conf.enable_beacon = true; | |
233 | break; | |
234 | default: | |
235 | /* not reached */ | |
236 | WARN_ON(1); | |
237 | break; | |
238 | } | |
239 | } | |
240 | } | |
241 | ||
24487981 JB |
242 | drv_bss_info_changed(local, &sdata->vif, |
243 | &sdata->vif.bss_conf, changed); | |
d9430a32 DD |
244 | } |
245 | ||
f698d856 | 246 | u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata) |
d9430a32 | 247 | { |
bda3933a JB |
248 | sdata->vif.bss_conf.use_cts_prot = false; |
249 | sdata->vif.bss_conf.use_short_preamble = false; | |
250 | sdata->vif.bss_conf.use_short_slot = false; | |
7a5158ef JB |
251 | return BSS_CHANGED_ERP_CTS_PROT | |
252 | BSS_CHANGED_ERP_PREAMBLE | | |
253 | BSS_CHANGED_ERP_SLOT; | |
d9430a32 DD |
254 | } |
255 | ||
f0706e82 | 256 | void ieee80211_tx_status_irqsafe(struct ieee80211_hw *hw, |
e039fa4a | 257 | struct sk_buff *skb) |
f0706e82 JB |
258 | { |
259 | struct ieee80211_local *local = hw_to_local(hw); | |
e039fa4a | 260 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
f0706e82 JB |
261 | int tmp; |
262 | ||
f0706e82 | 263 | skb->pkt_type = IEEE80211_TX_STATUS_MSG; |
e039fa4a | 264 | skb_queue_tail(info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS ? |
f0706e82 JB |
265 | &local->skb_queue : &local->skb_queue_unreliable, skb); |
266 | tmp = skb_queue_len(&local->skb_queue) + | |
267 | skb_queue_len(&local->skb_queue_unreliable); | |
268 | while (tmp > IEEE80211_IRQSAFE_QUEUE_LIMIT && | |
269 | (skb = skb_dequeue(&local->skb_queue_unreliable))) { | |
f0706e82 JB |
270 | dev_kfree_skb_irq(skb); |
271 | tmp--; | |
272 | I802_DEBUG_INC(local->tx_status_drop); | |
273 | } | |
274 | tasklet_schedule(&local->tasklet); | |
275 | } | |
276 | EXPORT_SYMBOL(ieee80211_tx_status_irqsafe); | |
277 | ||
278 | static void ieee80211_tasklet_handler(unsigned long data) | |
279 | { | |
280 | struct ieee80211_local *local = (struct ieee80211_local *) data; | |
281 | struct sk_buff *skb; | |
eadc8d9e | 282 | struct ieee80211_ra_tid *ra_tid; |
f0706e82 JB |
283 | |
284 | while ((skb = skb_dequeue(&local->skb_queue)) || | |
285 | (skb = skb_dequeue(&local->skb_queue_unreliable))) { | |
286 | switch (skb->pkt_type) { | |
287 | case IEEE80211_RX_MSG: | |
51fb61e7 | 288 | /* Clear skb->pkt_type in order to not confuse kernel |
f0706e82 JB |
289 | * netstack. */ |
290 | skb->pkt_type = 0; | |
f1d58c25 | 291 | ieee80211_rx(local_to_hw(local), skb); |
f0706e82 JB |
292 | break; |
293 | case IEEE80211_TX_STATUS_MSG: | |
f0706e82 | 294 | skb->pkt_type = 0; |
e039fa4a | 295 | ieee80211_tx_status(local_to_hw(local), skb); |
f0706e82 | 296 | break; |
eadc8d9e RR |
297 | case IEEE80211_DELBA_MSG: |
298 | ra_tid = (struct ieee80211_ra_tid *) &skb->cb; | |
299 | ieee80211_stop_tx_ba_cb(local_to_hw(local), | |
300 | ra_tid->ra, ra_tid->tid); | |
301 | dev_kfree_skb(skb); | |
302 | break; | |
303 | case IEEE80211_ADDBA_MSG: | |
304 | ra_tid = (struct ieee80211_ra_tid *) &skb->cb; | |
305 | ieee80211_start_tx_ba_cb(local_to_hw(local), | |
306 | ra_tid->ra, ra_tid->tid); | |
307 | dev_kfree_skb(skb); | |
308 | break ; | |
f4ea83dd | 309 | default: |
5e3f3089 LF |
310 | WARN(1, "mac80211: Packet is of unknown type %d\n", |
311 | skb->pkt_type); | |
f0706e82 JB |
312 | dev_kfree_skb(skb); |
313 | break; | |
314 | } | |
315 | } | |
316 | } | |
317 | ||
d46e144b JB |
318 | static void ieee80211_handle_filtered_frame(struct ieee80211_local *local, |
319 | struct sta_info *sta, | |
e039fa4a | 320 | struct sk_buff *skb) |
d46e144b | 321 | { |
8f77f384 JB |
322 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
323 | ||
4da163ab JB |
324 | /* |
325 | * XXX: This is temporary! | |
326 | * | |
327 | * The problem here is that when we get here, the driver will | |
328 | * quite likely have pretty much overwritten info->control by | |
329 | * using info->driver_data or info->rate_driver_data. Thus, | |
330 | * when passing out the frame to the driver again, we would be | |
331 | * passing completely bogus data since the driver would then | |
332 | * expect a properly filled info->control. In mac80211 itself | |
333 | * the same problem occurs, since we need info->control.vif | |
334 | * internally. | |
335 | * | |
336 | * To fix this, we should send the frame through TX processing | |
337 | * again. However, it's not that simple, since the frame will | |
338 | * have been software-encrypted (if applicable) already, and | |
339 | * encrypting it again doesn't do much good. So to properly do | |
340 | * that, we not only have to skip the actual 'raw' encryption | |
341 | * (key selection etc. still has to be done!) but also the | |
342 | * sequence number assignment since that impacts the crypto | |
343 | * encapsulation, of course. | |
344 | * | |
345 | * Hence, for now, fix the bug by just dropping the frame. | |
346 | */ | |
347 | goto drop; | |
348 | ||
d46e144b JB |
349 | sta->tx_filtered_count++; |
350 | ||
351 | /* | |
352 | * Clear the TX filter mask for this STA when sending the next | |
353 | * packet. If the STA went to power save mode, this will happen | |
f6d97104 | 354 | * when it wakes up for the next time. |
d46e144b | 355 | */ |
07346f81 | 356 | set_sta_flags(sta, WLAN_STA_CLEAR_PS_FILT); |
d46e144b JB |
357 | |
358 | /* | |
359 | * This code races in the following way: | |
360 | * | |
361 | * (1) STA sends frame indicating it will go to sleep and does so | |
362 | * (2) hardware/firmware adds STA to filter list, passes frame up | |
363 | * (3) hardware/firmware processes TX fifo and suppresses a frame | |
364 | * (4) we get TX status before having processed the frame and | |
365 | * knowing that the STA has gone to sleep. | |
366 | * | |
367 | * This is actually quite unlikely even when both those events are | |
368 | * processed from interrupts coming in quickly after one another or | |
369 | * even at the same time because we queue both TX status events and | |
370 | * RX frames to be processed by a tasklet and process them in the | |
371 | * same order that they were received or TX status last. Hence, there | |
372 | * is no race as long as the frame RX is processed before the next TX | |
373 | * status, which drivers can ensure, see below. | |
374 | * | |
375 | * Note that this can only happen if the hardware or firmware can | |
376 | * actually add STAs to the filter list, if this is done by the | |
377 | * driver in response to set_tim() (which will only reduce the race | |
378 | * this whole filtering tries to solve, not completely solve it) | |
379 | * this situation cannot happen. | |
380 | * | |
381 | * To completely solve this race drivers need to make sure that they | |
382 | * (a) don't mix the irq-safe/not irq-safe TX status/RX processing | |
383 | * functions and | |
384 | * (b) always process RX events before TX status events if ordering | |
385 | * can be unknown, for example with different interrupt status | |
386 | * bits. | |
387 | */ | |
07346f81 | 388 | if (test_sta_flags(sta, WLAN_STA_PS) && |
d46e144b | 389 | skb_queue_len(&sta->tx_filtered) < STA_MAX_TX_BUFFER) { |
d46e144b JB |
390 | skb_queue_tail(&sta->tx_filtered, skb); |
391 | return; | |
392 | } | |
393 | ||
8f77f384 JB |
394 | if (!test_sta_flags(sta, WLAN_STA_PS) && |
395 | !(info->flags & IEEE80211_TX_INTFL_RETRIED)) { | |
d46e144b | 396 | /* Software retry the packet once */ |
8f77f384 JB |
397 | info->flags |= IEEE80211_TX_INTFL_RETRIED; |
398 | ieee80211_add_pending_skb(local, skb); | |
d46e144b JB |
399 | return; |
400 | } | |
401 | ||
4da163ab | 402 | drop: |
f4ea83dd | 403 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
d46e144b JB |
404 | if (net_ratelimit()) |
405 | printk(KERN_DEBUG "%s: dropped TX filtered frame, " | |
406 | "queue_len=%d PS=%d @%lu\n", | |
407 | wiphy_name(local->hw.wiphy), | |
408 | skb_queue_len(&sta->tx_filtered), | |
07346f81 | 409 | !!test_sta_flags(sta, WLAN_STA_PS), jiffies); |
f4ea83dd | 410 | #endif |
d46e144b JB |
411 | dev_kfree_skb(skb); |
412 | } | |
413 | ||
e039fa4a | 414 | void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb) |
f0706e82 JB |
415 | { |
416 | struct sk_buff *skb2; | |
417 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; | |
418 | struct ieee80211_local *local = hw_to_local(hw); | |
e039fa4a | 419 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
f0706e82 | 420 | u16 frag, type; |
429a3805 | 421 | __le16 fc; |
4b7679a5 | 422 | struct ieee80211_supported_band *sband; |
b306f453 JB |
423 | struct ieee80211_tx_status_rtap_hdr *rthdr; |
424 | struct ieee80211_sub_if_data *sdata; | |
3d30d949 | 425 | struct net_device *prev_dev = NULL; |
429a3805 | 426 | struct sta_info *sta; |
e6a9854b JB |
427 | int retry_count = -1, i; |
428 | ||
429 | for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) { | |
430 | /* the HW cannot have attempted that rate */ | |
431 | if (i >= hw->max_rates) { | |
432 | info->status.rates[i].idx = -1; | |
433 | info->status.rates[i].count = 0; | |
434 | } | |
435 | ||
436 | retry_count += info->status.rates[i].count; | |
437 | } | |
438 | if (retry_count < 0) | |
439 | retry_count = 0; | |
f0706e82 | 440 | |
d0709a65 JB |
441 | rcu_read_lock(); |
442 | ||
e6a9854b JB |
443 | sband = local->hw.wiphy->bands[info->band]; |
444 | ||
95dac040 JB |
445 | sta = sta_info_get(local, hdr->addr1); |
446 | ||
447 | if (sta) { | |
e6a9854b | 448 | if (!(info->flags & IEEE80211_TX_STAT_ACK) && |
95dac040 JB |
449 | test_sta_flags(sta, WLAN_STA_PS)) { |
450 | /* | |
451 | * The STA is in power save mode, so assume | |
452 | * that this TX packet failed because of that. | |
453 | */ | |
454 | ieee80211_handle_filtered_frame(local, sta, skb); | |
455 | rcu_read_unlock(); | |
456 | return; | |
f0706e82 | 457 | } |
f0706e82 | 458 | |
95dac040 JB |
459 | fc = hdr->frame_control; |
460 | ||
461 | if ((info->flags & IEEE80211_TX_STAT_AMPDU_NO_BACK) && | |
462 | (ieee80211_is_data_qos(fc))) { | |
463 | u16 tid, ssn; | |
464 | u8 *qc; | |
429a3805 | 465 | |
429a3805 RR |
466 | qc = ieee80211_get_qos_ctl(hdr); |
467 | tid = qc[0] & 0xf; | |
468 | ssn = ((le16_to_cpu(hdr->seq_ctrl) + 0x10) | |
469 | & IEEE80211_SCTL_SEQ); | |
f698d856 | 470 | ieee80211_send_bar(sta->sdata, hdr->addr1, |
429a3805 RR |
471 | tid, ssn); |
472 | } | |
429a3805 | 473 | |
95dac040 | 474 | if (info->flags & IEEE80211_TX_STAT_TX_FILTERED) { |
e039fa4a | 475 | ieee80211_handle_filtered_frame(local, sta, skb); |
d0709a65 | 476 | rcu_read_unlock(); |
f0706e82 | 477 | return; |
95dac040 | 478 | } else { |
e6a9854b | 479 | if (!(info->flags & IEEE80211_TX_STAT_ACK)) |
95dac040 | 480 | sta->tx_retry_failed++; |
e6a9854b | 481 | sta->tx_retry_count += retry_count; |
f0706e82 | 482 | } |
95dac040 | 483 | |
4b7679a5 | 484 | rate_control_tx_status(local, sband, sta, skb); |
bfc32e6a JC |
485 | if (ieee80211_vif_is_mesh(&sta->sdata->vif)) |
486 | ieee80211s_update_metric(local, sta, skb); | |
95dac040 | 487 | } |
f0706e82 | 488 | |
d0709a65 JB |
489 | rcu_read_unlock(); |
490 | ||
f0706e82 JB |
491 | ieee80211_led_tx(local, 0); |
492 | ||
493 | /* SNMP counters | |
494 | * Fragments are passed to low-level drivers as separate skbs, so these | |
495 | * are actually fragments, not frames. Update frame counters only for | |
496 | * the first fragment of the frame. */ | |
497 | ||
498 | frag = le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_FRAG; | |
499 | type = le16_to_cpu(hdr->frame_control) & IEEE80211_FCTL_FTYPE; | |
500 | ||
e039fa4a | 501 | if (info->flags & IEEE80211_TX_STAT_ACK) { |
f0706e82 JB |
502 | if (frag == 0) { |
503 | local->dot11TransmittedFrameCount++; | |
504 | if (is_multicast_ether_addr(hdr->addr1)) | |
505 | local->dot11MulticastTransmittedFrameCount++; | |
e6a9854b | 506 | if (retry_count > 0) |
f0706e82 | 507 | local->dot11RetryCount++; |
e6a9854b | 508 | if (retry_count > 1) |
f0706e82 JB |
509 | local->dot11MultipleRetryCount++; |
510 | } | |
511 | ||
512 | /* This counter shall be incremented for an acknowledged MPDU | |
513 | * with an individual address in the address 1 field or an MPDU | |
514 | * with a multicast address in the address 1 field of type Data | |
515 | * or Management. */ | |
516 | if (!is_multicast_ether_addr(hdr->addr1) || | |
517 | type == IEEE80211_FTYPE_DATA || | |
518 | type == IEEE80211_FTYPE_MGMT) | |
519 | local->dot11TransmittedFragmentCount++; | |
520 | } else { | |
521 | if (frag == 0) | |
522 | local->dot11FailedCount++; | |
523 | } | |
524 | ||
b306f453 JB |
525 | /* this was a transmitted frame, but now we want to reuse it */ |
526 | skb_orphan(skb); | |
527 | ||
3d30d949 MW |
528 | /* |
529 | * This is a bit racy but we can avoid a lot of work | |
530 | * with this test... | |
531 | */ | |
532 | if (!local->monitors && !local->cooked_mntrs) { | |
f0706e82 JB |
533 | dev_kfree_skb(skb); |
534 | return; | |
535 | } | |
536 | ||
b306f453 | 537 | /* send frame to monitor interfaces now */ |
f0706e82 | 538 | |
b306f453 JB |
539 | if (skb_headroom(skb) < sizeof(*rthdr)) { |
540 | printk(KERN_ERR "ieee80211_tx_status: headroom too small\n"); | |
f0706e82 JB |
541 | dev_kfree_skb(skb); |
542 | return; | |
543 | } | |
f0706e82 | 544 | |
988c0f72 | 545 | rthdr = (struct ieee80211_tx_status_rtap_hdr *) |
b306f453 JB |
546 | skb_push(skb, sizeof(*rthdr)); |
547 | ||
548 | memset(rthdr, 0, sizeof(*rthdr)); | |
549 | rthdr->hdr.it_len = cpu_to_le16(sizeof(*rthdr)); | |
550 | rthdr->hdr.it_present = | |
551 | cpu_to_le32((1 << IEEE80211_RADIOTAP_TX_FLAGS) | | |
e6a9854b JB |
552 | (1 << IEEE80211_RADIOTAP_DATA_RETRIES) | |
553 | (1 << IEEE80211_RADIOTAP_RATE)); | |
b306f453 | 554 | |
e039fa4a | 555 | if (!(info->flags & IEEE80211_TX_STAT_ACK) && |
b306f453 JB |
556 | !is_multicast_ether_addr(hdr->addr1)) |
557 | rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_FAIL); | |
558 | ||
e6a9854b JB |
559 | /* |
560 | * XXX: Once radiotap gets the bitmap reset thing the vendor | |
561 | * extensions proposal contains, we can actually report | |
562 | * the whole set of tries we did. | |
563 | */ | |
564 | if ((info->status.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) || | |
565 | (info->status.rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT)) | |
b306f453 | 566 | rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_CTS); |
e6a9854b | 567 | else if (info->status.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) |
b306f453 | 568 | rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_RTS); |
e6a9854b JB |
569 | if (info->status.rates[0].idx >= 0 && |
570 | !(info->status.rates[0].flags & IEEE80211_TX_RC_MCS)) | |
571 | rthdr->rate = sband->bitrates[ | |
572 | info->status.rates[0].idx].bitrate / 5; | |
b306f453 | 573 | |
e6a9854b JB |
574 | /* for now report the total retry_count */ |
575 | rthdr->data_retries = retry_count; | |
b306f453 | 576 | |
3d30d949 MW |
577 | /* XXX: is this sufficient for BPF? */ |
578 | skb_set_mac_header(skb, 0); | |
579 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
580 | skb->pkt_type = PACKET_OTHERHOST; | |
581 | skb->protocol = htons(ETH_P_802_2); | |
582 | memset(skb->cb, 0, sizeof(skb->cb)); | |
583 | ||
79010420 | 584 | rcu_read_lock(); |
79010420 | 585 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { |
05c914fe | 586 | if (sdata->vif.type == NL80211_IFTYPE_MONITOR) { |
b306f453 JB |
587 | if (!netif_running(sdata->dev)) |
588 | continue; | |
3d30d949 MW |
589 | |
590 | if (prev_dev) { | |
79010420 | 591 | skb2 = skb_clone(skb, GFP_ATOMIC); |
3d30d949 MW |
592 | if (skb2) { |
593 | skb2->dev = prev_dev; | |
594 | netif_rx(skb2); | |
595 | } | |
596 | } | |
597 | ||
598 | prev_dev = sdata->dev; | |
b306f453 JB |
599 | } |
600 | } | |
3d30d949 MW |
601 | if (prev_dev) { |
602 | skb->dev = prev_dev; | |
603 | netif_rx(skb); | |
604 | skb = NULL; | |
605 | } | |
79010420 | 606 | rcu_read_unlock(); |
3d30d949 | 607 | dev_kfree_skb(skb); |
f0706e82 JB |
608 | } |
609 | EXPORT_SYMBOL(ieee80211_tx_status); | |
610 | ||
f2753ddb JB |
611 | static void ieee80211_restart_work(struct work_struct *work) |
612 | { | |
613 | struct ieee80211_local *local = | |
614 | container_of(work, struct ieee80211_local, restart_work); | |
615 | ||
616 | rtnl_lock(); | |
617 | ieee80211_reconfig(local); | |
618 | rtnl_unlock(); | |
619 | } | |
620 | ||
621 | void ieee80211_restart_hw(struct ieee80211_hw *hw) | |
622 | { | |
623 | struct ieee80211_local *local = hw_to_local(hw); | |
624 | ||
625 | /* use this reason, __ieee80211_resume will unblock it */ | |
626 | ieee80211_stop_queues_by_reason(hw, | |
627 | IEEE80211_QUEUE_STOP_REASON_SUSPEND); | |
628 | ||
629 | schedule_work(&local->restart_work); | |
630 | } | |
631 | EXPORT_SYMBOL(ieee80211_restart_hw); | |
632 | ||
f0706e82 JB |
633 | struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len, |
634 | const struct ieee80211_ops *ops) | |
635 | { | |
f0706e82 | 636 | struct ieee80211_local *local; |
96f5e66e | 637 | int priv_size, i; |
f0706e82 JB |
638 | struct wiphy *wiphy; |
639 | ||
640 | /* Ensure 32-byte alignment of our private data and hw private data. | |
641 | * We use the wiphy priv data for both our ieee80211_local and for | |
642 | * the driver's private data | |
643 | * | |
644 | * In memory it'll be like this: | |
645 | * | |
646 | * +-------------------------+ | |
647 | * | struct wiphy | | |
648 | * +-------------------------+ | |
649 | * | struct ieee80211_local | | |
650 | * +-------------------------+ | |
651 | * | driver's private data | | |
652 | * +-------------------------+ | |
653 | * | |
654 | */ | |
1ce8e7b5 | 655 | priv_size = ALIGN(sizeof(*local), NETDEV_ALIGN) + priv_data_len; |
f0706e82 JB |
656 | |
657 | wiphy = wiphy_new(&mac80211_config_ops, priv_size); | |
658 | ||
659 | if (!wiphy) | |
660 | return NULL; | |
661 | ||
a272a720 | 662 | wiphy->netnsok = true; |
f0706e82 | 663 | wiphy->privid = mac80211_wiphy_privid; |
18a83659 | 664 | |
00d3f14c JB |
665 | /* Yes, putting cfg80211_bss into ieee80211_bss is a hack */ |
666 | wiphy->bss_priv_size = sizeof(struct ieee80211_bss) - | |
667 | sizeof(struct cfg80211_bss); | |
f0706e82 JB |
668 | |
669 | local = wiphy_priv(wiphy); | |
de95a54b | 670 | |
f0706e82 JB |
671 | local->hw.wiphy = wiphy; |
672 | ||
1ce8e7b5 | 673 | local->hw.priv = (char *)local + ALIGN(sizeof(*local), NETDEV_ALIGN); |
f0706e82 | 674 | |
4480f15c | 675 | BUG_ON(!ops->tx); |
4150c572 JB |
676 | BUG_ON(!ops->start); |
677 | BUG_ON(!ops->stop); | |
4480f15c JB |
678 | BUG_ON(!ops->config); |
679 | BUG_ON(!ops->add_interface); | |
4150c572 JB |
680 | BUG_ON(!ops->remove_interface); |
681 | BUG_ON(!ops->configure_filter); | |
f0706e82 JB |
682 | local->ops = ops; |
683 | ||
e6a9854b JB |
684 | /* set up some defaults */ |
685 | local->hw.queues = 1; | |
686 | local->hw.max_rates = 1; | |
b9a5f8ca JM |
687 | local->hw.conf.long_frame_max_tx_count = wiphy->retry_long; |
688 | local->hw.conf.short_frame_max_tx_count = wiphy->retry_short; | |
c428c892 | 689 | local->user_power_level = -1; |
f0706e82 | 690 | |
79010420 | 691 | INIT_LIST_HEAD(&local->interfaces); |
c771c9d8 | 692 | mutex_init(&local->iflist_mtx); |
f3b85252 | 693 | mutex_init(&local->scan_mtx); |
f0706e82 | 694 | |
b16bd15c | 695 | spin_lock_init(&local->key_lock); |
3b8d81e0 | 696 | spin_lock_init(&local->filter_lock); |
ce7c9111 KV |
697 | spin_lock_init(&local->queue_stop_reason_lock); |
698 | ||
c2b13452 | 699 | INIT_DELAYED_WORK(&local->scan_work, ieee80211_scan_work); |
f0706e82 | 700 | |
f2753ddb JB |
701 | INIT_WORK(&local->restart_work, ieee80211_restart_work); |
702 | ||
3ac64bee JB |
703 | INIT_WORK(&local->reconfig_filter, ieee80211_reconfig_filter); |
704 | ||
520eb820 KV |
705 | INIT_WORK(&local->dynamic_ps_enable_work, |
706 | ieee80211_dynamic_ps_enable_work); | |
707 | INIT_WORK(&local->dynamic_ps_disable_work, | |
708 | ieee80211_dynamic_ps_disable_work); | |
709 | setup_timer(&local->dynamic_ps_timer, | |
710 | ieee80211_dynamic_ps_timer, (unsigned long) local); | |
711 | ||
f0706e82 JB |
712 | sta_info_init(local); |
713 | ||
2a577d98 JB |
714 | for (i = 0; i < IEEE80211_MAX_QUEUES; i++) |
715 | skb_queue_head_init(&local->pending[i]); | |
f0706e82 JB |
716 | tasklet_init(&local->tx_pending_tasklet, ieee80211_tx_pending, |
717 | (unsigned long)local); | |
f0706e82 JB |
718 | |
719 | tasklet_init(&local->tasklet, | |
720 | ieee80211_tasklet_handler, | |
721 | (unsigned long) local); | |
f0706e82 JB |
722 | |
723 | skb_queue_head_init(&local->skb_queue); | |
724 | skb_queue_head_init(&local->skb_queue_unreliable); | |
725 | ||
cd8ffc80 JB |
726 | spin_lock_init(&local->ampdu_lock); |
727 | ||
f0706e82 JB |
728 | return local_to_hw(local); |
729 | } | |
730 | EXPORT_SYMBOL(ieee80211_alloc_hw); | |
731 | ||
732 | int ieee80211_register_hw(struct ieee80211_hw *hw) | |
733 | { | |
734 | struct ieee80211_local *local = hw_to_local(hw); | |
f0706e82 | 735 | int result; |
8318d78a | 736 | enum ieee80211_band band; |
de95a54b | 737 | int channels, i, j, max_bitrates; |
5ef2d41a | 738 | bool supp_ht; |
25e47c18 JB |
739 | static const u32 cipher_suites[] = { |
740 | WLAN_CIPHER_SUITE_WEP40, | |
741 | WLAN_CIPHER_SUITE_WEP104, | |
742 | WLAN_CIPHER_SUITE_TKIP, | |
743 | WLAN_CIPHER_SUITE_CCMP, | |
744 | ||
745 | /* keep last -- depends on hw flags! */ | |
746 | WLAN_CIPHER_SUITE_AES_CMAC | |
747 | }; | |
8318d78a JB |
748 | |
749 | /* | |
750 | * generic code guarantees at least one band, | |
751 | * set this very early because much code assumes | |
752 | * that hw.conf.channel is assigned | |
753 | */ | |
2a519311 | 754 | channels = 0; |
de95a54b | 755 | max_bitrates = 0; |
5ef2d41a | 756 | supp_ht = false; |
8318d78a JB |
757 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { |
758 | struct ieee80211_supported_band *sband; | |
759 | ||
760 | sband = local->hw.wiphy->bands[band]; | |
de95a54b JB |
761 | if (!sband) |
762 | continue; | |
763 | if (!local->oper_channel) { | |
8318d78a JB |
764 | /* init channel we're on */ |
765 | local->hw.conf.channel = | |
58905ca5 JB |
766 | local->oper_channel = &sband->channels[0]; |
767 | local->hw.conf.channel_type = NL80211_CHAN_NO_HT; | |
8318d78a | 768 | } |
de95a54b JB |
769 | channels += sband->n_channels; |
770 | ||
771 | if (max_bitrates < sband->n_bitrates) | |
772 | max_bitrates = sband->n_bitrates; | |
5ef2d41a | 773 | supp_ht = supp_ht || sband->ht_cap.ht_supported; |
8318d78a | 774 | } |
f0706e82 | 775 | |
5ba63533 JB |
776 | local->int_scan_req = kzalloc(sizeof(*local->int_scan_req) + |
777 | sizeof(void *) * channels, GFP_KERNEL); | |
778 | if (!local->int_scan_req) | |
2a519311 JB |
779 | return -ENOMEM; |
780 | ||
f59ac048 LR |
781 | /* if low-level driver supports AP, we also support VLAN */ |
782 | if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) | |
783 | local->hw.wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP_VLAN); | |
784 | ||
785 | /* mac80211 always supports monitor */ | |
786 | local->hw.wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR); | |
787 | ||
77965c97 JB |
788 | if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM) |
789 | local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM; | |
790 | else if (local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC) | |
791 | local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC; | |
792 | ||
de95a54b JB |
793 | /* |
794 | * Calculate scan IE length -- we need this to alloc | |
795 | * memory and to subtract from the driver limit. It | |
796 | * includes the (extended) supported rates and HT | |
797 | * information -- SSID is the driver's responsibility. | |
798 | */ | |
799 | local->scan_ies_len = 4 + max_bitrates; /* (ext) supp rates */ | |
5ef2d41a JB |
800 | if (supp_ht) |
801 | local->scan_ies_len += 2 + sizeof(struct ieee80211_ht_cap); | |
de95a54b JB |
802 | |
803 | if (!local->ops->hw_scan) { | |
804 | /* For hw_scan, driver needs to set these up. */ | |
805 | local->hw.wiphy->max_scan_ssids = 4; | |
806 | local->hw.wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN; | |
807 | } | |
808 | ||
809 | /* | |
810 | * If the driver supports any scan IEs, then assume the | |
811 | * limit includes the IEs mac80211 will add, otherwise | |
812 | * leave it at zero and let the driver sort it out; we | |
813 | * still pass our IEs to the driver but userspace will | |
814 | * not be allowed to in that case. | |
815 | */ | |
816 | if (local->hw.wiphy->max_scan_ie_len) | |
817 | local->hw.wiphy->max_scan_ie_len -= local->scan_ies_len; | |
818 | ||
25e47c18 JB |
819 | local->hw.wiphy->cipher_suites = cipher_suites; |
820 | local->hw.wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites); | |
821 | if (!(local->hw.flags & IEEE80211_HW_MFP_CAPABLE)) | |
822 | local->hw.wiphy->n_cipher_suites--; | |
823 | ||
f0706e82 JB |
824 | result = wiphy_register(local->hw.wiphy); |
825 | if (result < 0) | |
2a519311 | 826 | goto fail_wiphy_register; |
f0706e82 | 827 | |
e2530083 JB |
828 | /* |
829 | * We use the number of queues for feature tests (QoS, HT) internally | |
830 | * so restrict them appropriately. | |
831 | */ | |
e2530083 JB |
832 | if (hw->queues > IEEE80211_MAX_QUEUES) |
833 | hw->queues = IEEE80211_MAX_QUEUES; | |
e2530083 | 834 | |
42935eca | 835 | local->workqueue = |
30d3ef41 | 836 | create_singlethread_workqueue(wiphy_name(local->hw.wiphy)); |
42935eca | 837 | if (!local->workqueue) { |
f0706e82 JB |
838 | result = -ENOMEM; |
839 | goto fail_workqueue; | |
840 | } | |
841 | ||
b306f453 JB |
842 | /* |
843 | * The hardware needs headroom for sending the frame, | |
844 | * and we need some headroom for passing the frame to monitor | |
845 | * interfaces, but never both at the same time. | |
846 | */ | |
33ccad35 JB |
847 | local->tx_headroom = max_t(unsigned int , local->hw.extra_tx_headroom, |
848 | sizeof(struct ieee80211_tx_status_rtap_hdr)); | |
b306f453 | 849 | |
e9f207f0 JB |
850 | debugfs_hw_add(local); |
851 | ||
ea95bba4 TW |
852 | if (local->hw.max_listen_interval == 0) |
853 | local->hw.max_listen_interval = 1; | |
854 | ||
855 | local->hw.conf.listen_interval = local->hw.max_listen_interval; | |
856 | ||
f0706e82 JB |
857 | result = sta_info_start(local); |
858 | if (result < 0) | |
859 | goto fail_sta_info; | |
860 | ||
d4c4a9a1 AJ |
861 | result = ieee80211_wep_init(local); |
862 | if (result < 0) { | |
863 | printk(KERN_DEBUG "%s: Failed to initialize wep: %d\n", | |
864 | wiphy_name(local->hw.wiphy), result); | |
865 | goto fail_wep; | |
866 | } | |
867 | ||
f0706e82 | 868 | rtnl_lock(); |
f0706e82 | 869 | |
830f9038 JB |
870 | result = ieee80211_init_rate_ctrl_alg(local, |
871 | hw->rate_control_algorithm); | |
f0706e82 JB |
872 | if (result < 0) { |
873 | printk(KERN_DEBUG "%s: Failed to initialize rate control " | |
dd1cd4c6 | 874 | "algorithm\n", wiphy_name(local->hw.wiphy)); |
f0706e82 JB |
875 | goto fail_rate; |
876 | } | |
877 | ||
8dffff21 JB |
878 | /* add one default STA interface if supported */ |
879 | if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_STATION)) { | |
880 | result = ieee80211_if_add(local, "wlan%d", NULL, | |
881 | NL80211_IFTYPE_STATION, NULL); | |
882 | if (result) | |
883 | printk(KERN_WARNING "%s: Failed to add default virtual iface\n", | |
884 | wiphy_name(local->hw.wiphy)); | |
885 | } | |
f0706e82 | 886 | |
f0706e82 JB |
887 | rtnl_unlock(); |
888 | ||
889 | ieee80211_led_init(local); | |
890 | ||
2a519311 JB |
891 | /* alloc internal scan request */ |
892 | i = 0; | |
5ba63533 JB |
893 | local->int_scan_req->ssids = &local->scan_ssid; |
894 | local->int_scan_req->n_ssids = 1; | |
2a519311 JB |
895 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { |
896 | if (!hw->wiphy->bands[band]) | |
897 | continue; | |
898 | for (j = 0; j < hw->wiphy->bands[band]->n_channels; j++) { | |
5ba63533 | 899 | local->int_scan_req->channels[i] = |
2a519311 JB |
900 | &hw->wiphy->bands[band]->channels[j]; |
901 | i++; | |
902 | } | |
903 | } | |
904 | ||
10f644a4 JB |
905 | local->network_latency_notifier.notifier_call = |
906 | ieee80211_max_network_latency; | |
907 | result = pm_qos_add_notifier(PM_QOS_NETWORK_LATENCY, | |
908 | &local->network_latency_notifier); | |
909 | ||
910 | if (result) { | |
911 | rtnl_lock(); | |
912 | goto fail_pm_qos; | |
913 | } | |
914 | ||
f0706e82 JB |
915 | return 0; |
916 | ||
10f644a4 JB |
917 | fail_pm_qos: |
918 | ieee80211_led_exit(local); | |
919 | ieee80211_remove_interfaces(local); | |
10f644a4 | 920 | fail_rate: |
f0706e82 | 921 | rtnl_unlock(); |
d4c4a9a1 | 922 | ieee80211_wep_free(local); |
aba74530 | 923 | fail_wep: |
f0706e82 | 924 | sta_info_stop(local); |
10f644a4 | 925 | fail_sta_info: |
e9f207f0 | 926 | debugfs_hw_del(local); |
42935eca | 927 | destroy_workqueue(local->workqueue); |
10f644a4 | 928 | fail_workqueue: |
f0706e82 | 929 | wiphy_unregister(local->hw.wiphy); |
10f644a4 | 930 | fail_wiphy_register: |
11ba964d | 931 | kfree(local->int_scan_req); |
f0706e82 JB |
932 | return result; |
933 | } | |
934 | EXPORT_SYMBOL(ieee80211_register_hw); | |
935 | ||
f0706e82 JB |
936 | void ieee80211_unregister_hw(struct ieee80211_hw *hw) |
937 | { | |
938 | struct ieee80211_local *local = hw_to_local(hw); | |
f0706e82 JB |
939 | |
940 | tasklet_kill(&local->tx_pending_tasklet); | |
941 | tasklet_kill(&local->tasklet); | |
942 | ||
10f644a4 JB |
943 | pm_qos_remove_notifier(PM_QOS_NETWORK_LATENCY, |
944 | &local->network_latency_notifier); | |
945 | ||
f0706e82 JB |
946 | rtnl_lock(); |
947 | ||
79010420 JB |
948 | /* |
949 | * At this point, interface list manipulations are fine | |
950 | * because the driver cannot be handing us frames any | |
951 | * more and the tasklet is killed. | |
952 | */ | |
75636525 | 953 | ieee80211_remove_interfaces(local); |
5b2812e9 | 954 | |
f0706e82 JB |
955 | rtnl_unlock(); |
956 | ||
3ac64bee JB |
957 | cancel_work_sync(&local->reconfig_filter); |
958 | ||
f0706e82 JB |
959 | ieee80211_clear_tx_pending(local); |
960 | sta_info_stop(local); | |
961 | rate_control_deinitialize(local); | |
e9f207f0 | 962 | debugfs_hw_del(local); |
f0706e82 | 963 | |
f0706e82 JB |
964 | if (skb_queue_len(&local->skb_queue) |
965 | || skb_queue_len(&local->skb_queue_unreliable)) | |
966 | printk(KERN_WARNING "%s: skb_queue not empty\n", | |
dd1cd4c6 | 967 | wiphy_name(local->hw.wiphy)); |
f0706e82 JB |
968 | skb_queue_purge(&local->skb_queue); |
969 | skb_queue_purge(&local->skb_queue_unreliable); | |
970 | ||
42935eca | 971 | destroy_workqueue(local->workqueue); |
f0706e82 JB |
972 | wiphy_unregister(local->hw.wiphy); |
973 | ieee80211_wep_free(local); | |
974 | ieee80211_led_exit(local); | |
5ba63533 | 975 | kfree(local->int_scan_req); |
f0706e82 JB |
976 | } |
977 | EXPORT_SYMBOL(ieee80211_unregister_hw); | |
978 | ||
979 | void ieee80211_free_hw(struct ieee80211_hw *hw) | |
980 | { | |
981 | struct ieee80211_local *local = hw_to_local(hw); | |
982 | ||
c771c9d8 | 983 | mutex_destroy(&local->iflist_mtx); |
f3b85252 | 984 | mutex_destroy(&local->scan_mtx); |
c771c9d8 | 985 | |
f0706e82 JB |
986 | wiphy_free(local->hw.wiphy); |
987 | } | |
988 | EXPORT_SYMBOL(ieee80211_free_hw); | |
989 | ||
f0706e82 JB |
990 | static int __init ieee80211_init(void) |
991 | { | |
992 | struct sk_buff *skb; | |
993 | int ret; | |
994 | ||
e039fa4a JB |
995 | BUILD_BUG_ON(sizeof(struct ieee80211_tx_info) > sizeof(skb->cb)); |
996 | BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, driver_data) + | |
c6a1fa12 | 997 | IEEE80211_TX_INFO_DRIVER_DATA_SIZE > sizeof(skb->cb)); |
f0706e82 | 998 | |
cccf129f FF |
999 | ret = rc80211_minstrel_init(); |
1000 | if (ret) | |
1001 | return ret; | |
1002 | ||
4b475898 | 1003 | ret = rc80211_pid_init(); |
ad018375 | 1004 | if (ret) |
51cb6db0 | 1005 | return ret; |
f0706e82 | 1006 | |
e9f207f0 JB |
1007 | ieee80211_debugfs_netdev_init(); |
1008 | ||
f0706e82 JB |
1009 | return 0; |
1010 | } | |
1011 | ||
f0706e82 JB |
1012 | static void __exit ieee80211_exit(void) |
1013 | { | |
4b475898 | 1014 | rc80211_pid_exit(); |
cccf129f | 1015 | rc80211_minstrel_exit(); |
ac71c691 | 1016 | |
3b96766f JB |
1017 | /* |
1018 | * For key todo, it'll be empty by now but the work | |
1019 | * might still be scheduled. | |
1020 | */ | |
1021 | flush_scheduled_work(); | |
1022 | ||
f7a92144 LCC |
1023 | if (mesh_allocated) |
1024 | ieee80211s_stop(); | |
902acc78 | 1025 | |
e9f207f0 | 1026 | ieee80211_debugfs_netdev_exit(); |
f0706e82 JB |
1027 | } |
1028 | ||
1029 | ||
ca9938fe | 1030 | subsys_initcall(ieee80211_init); |
f0706e82 JB |
1031 | module_exit(ieee80211_exit); |
1032 | ||
1033 | MODULE_DESCRIPTION("IEEE 802.11 subsystem"); | |
1034 | MODULE_LICENSE("GPL"); |