Commit | Line | Data |
---|---|---|
f0706e82 JB |
1 | /* |
2 | * Copyright 2002-2005, Instant802 Networks, Inc. | |
3 | * Copyright 2005-2006, Devicescape Software, Inc. | |
4 | * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License version 2 as | |
8 | * published by the Free Software Foundation. | |
9 | */ | |
10 | ||
11 | #include <net/mac80211.h> | |
12 | #include <net/ieee80211_radiotap.h> | |
13 | #include <linux/module.h> | |
14 | #include <linux/init.h> | |
15 | #include <linux/netdevice.h> | |
16 | #include <linux/types.h> | |
17 | #include <linux/slab.h> | |
18 | #include <linux/skbuff.h> | |
19 | #include <linux/etherdevice.h> | |
20 | #include <linux/if_arp.h> | |
21 | #include <linux/wireless.h> | |
22 | #include <linux/rtnetlink.h> | |
f0706e82 | 23 | #include <linux/bitmap.h> |
881d966b | 24 | #include <net/net_namespace.h> |
f0706e82 JB |
25 | #include <net/cfg80211.h> |
26 | ||
f0706e82 | 27 | #include "ieee80211_i.h" |
2c8dccc7 | 28 | #include "rate.h" |
f7a92144 | 29 | #include "mesh.h" |
f0706e82 | 30 | #include "wep.h" |
f0706e82 JB |
31 | #include "wme.h" |
32 | #include "aes_ccm.h" | |
2c8dccc7 | 33 | #include "led.h" |
e0eb6859 | 34 | #include "cfg.h" |
e9f207f0 JB |
35 | #include "debugfs.h" |
36 | #include "debugfs_netdev.h" | |
f0706e82 | 37 | |
b306f453 JB |
38 | /* |
39 | * For seeing transmitted packets on monitor interfaces | |
40 | * we have a radiotap header too. | |
41 | */ | |
42 | struct ieee80211_tx_status_rtap_hdr { | |
43 | struct ieee80211_radiotap_header hdr; | |
e6a9854b JB |
44 | u8 rate; |
45 | u8 padding_for_rate; | |
b306f453 JB |
46 | __le16 tx_flags; |
47 | u8 data_retries; | |
48 | } __attribute__ ((packed)); | |
49 | ||
f0706e82 | 50 | |
4150c572 | 51 | /* must be called under mdev tx lock */ |
0d143fe1 | 52 | void ieee80211_configure_filter(struct ieee80211_local *local) |
4150c572 JB |
53 | { |
54 | unsigned int changed_flags; | |
55 | unsigned int new_flags = 0; | |
56 | ||
53918994 | 57 | if (atomic_read(&local->iff_promiscs)) |
4150c572 JB |
58 | new_flags |= FIF_PROMISC_IN_BSS; |
59 | ||
53918994 | 60 | if (atomic_read(&local->iff_allmultis)) |
4150c572 JB |
61 | new_flags |= FIF_ALLMULTI; |
62 | ||
63 | if (local->monitors) | |
8cc9a739 MW |
64 | new_flags |= FIF_BCN_PRBRESP_PROMISC; |
65 | ||
66 | if (local->fif_fcsfail) | |
67 | new_flags |= FIF_FCSFAIL; | |
68 | ||
69 | if (local->fif_plcpfail) | |
70 | new_flags |= FIF_PLCPFAIL; | |
71 | ||
72 | if (local->fif_control) | |
73 | new_flags |= FIF_CONTROL; | |
74 | ||
75 | if (local->fif_other_bss) | |
76 | new_flags |= FIF_OTHER_BSS; | |
4150c572 JB |
77 | |
78 | changed_flags = local->filter_flags ^ new_flags; | |
79 | ||
80 | /* be a bit nasty */ | |
81 | new_flags |= (1<<31); | |
82 | ||
83 | local->ops->configure_filter(local_to_hw(local), | |
84 | changed_flags, &new_flags, | |
85 | local->mdev->mc_count, | |
86 | local->mdev->mc_list); | |
87 | ||
88 | WARN_ON(new_flags & (1<<31)); | |
89 | ||
90 | local->filter_flags = new_flags & ~(1<<31); | |
91 | } | |
92 | ||
b2c258fb | 93 | /* master interface */ |
f0706e82 | 94 | |
0d143fe1 JB |
95 | static int header_parse_80211(const struct sk_buff *skb, unsigned char *haddr) |
96 | { | |
97 | memcpy(haddr, skb_mac_header(skb) + 10, ETH_ALEN); /* addr2 */ | |
98 | return ETH_ALEN; | |
99 | } | |
100 | ||
101 | static const struct header_ops ieee80211_header_ops = { | |
102 | .create = eth_header, | |
103 | .parse = header_parse_80211, | |
104 | .rebuild = eth_rebuild_header, | |
105 | .cache = eth_header_cache, | |
106 | .cache_update = eth_header_cache_update, | |
107 | }; | |
108 | ||
b2c258fb JB |
109 | static int ieee80211_master_open(struct net_device *dev) |
110 | { | |
133b8226 JB |
111 | struct ieee80211_master_priv *mpriv = netdev_priv(dev); |
112 | struct ieee80211_local *local = mpriv->local; | |
b2c258fb JB |
113 | struct ieee80211_sub_if_data *sdata; |
114 | int res = -EOPNOTSUPP; | |
f0706e82 | 115 | |
79010420 JB |
116 | /* we hold the RTNL here so can safely walk the list */ |
117 | list_for_each_entry(sdata, &local->interfaces, list) { | |
3e122be0 | 118 | if (netif_running(sdata->dev)) { |
b2c258fb JB |
119 | res = 0; |
120 | break; | |
121 | } | |
122 | } | |
36d6825b JB |
123 | |
124 | if (res) | |
125 | return res; | |
126 | ||
51cb6db0 | 127 | netif_tx_start_all_queues(local->mdev); |
36d6825b JB |
128 | |
129 | return 0; | |
b2c258fb | 130 | } |
f0706e82 | 131 | |
b2c258fb | 132 | static int ieee80211_master_stop(struct net_device *dev) |
f0706e82 | 133 | { |
133b8226 JB |
134 | struct ieee80211_master_priv *mpriv = netdev_priv(dev); |
135 | struct ieee80211_local *local = mpriv->local; | |
b2c258fb | 136 | struct ieee80211_sub_if_data *sdata; |
f0706e82 | 137 | |
79010420 JB |
138 | /* we hold the RTNL here so can safely walk the list */ |
139 | list_for_each_entry(sdata, &local->interfaces, list) | |
3e122be0 | 140 | if (netif_running(sdata->dev)) |
b2c258fb | 141 | dev_close(sdata->dev); |
f0706e82 | 142 | |
b2c258fb JB |
143 | return 0; |
144 | } | |
f0706e82 | 145 | |
4150c572 JB |
146 | static void ieee80211_master_set_multicast_list(struct net_device *dev) |
147 | { | |
133b8226 JB |
148 | struct ieee80211_master_priv *mpriv = netdev_priv(dev); |
149 | struct ieee80211_local *local = mpriv->local; | |
4150c572 JB |
150 | |
151 | ieee80211_configure_filter(local); | |
152 | } | |
153 | ||
b2c258fb JB |
154 | /* everything else */ |
155 | ||
9d139c81 | 156 | int ieee80211_if_config(struct ieee80211_sub_if_data *sdata, u32 changed) |
b2c258fb | 157 | { |
9d139c81 | 158 | struct ieee80211_local *local = sdata->local; |
b2c258fb | 159 | struct ieee80211_if_conf conf; |
b2c258fb | 160 | |
9d139c81 JB |
161 | if (WARN_ON(!netif_running(sdata->dev))) |
162 | return 0; | |
163 | ||
7a725f73 JB |
164 | if (WARN_ON(sdata->vif.type == NL80211_IFTYPE_AP_VLAN)) |
165 | return -EINVAL; | |
166 | ||
9d139c81 | 167 | if (!local->ops->config_interface) |
f0706e82 | 168 | return 0; |
f0706e82 | 169 | |
b2c258fb | 170 | memset(&conf, 0, sizeof(conf)); |
9d139c81 JB |
171 | conf.changed = changed; |
172 | ||
05c914fe | 173 | if (sdata->vif.type == NL80211_IFTYPE_STATION || |
41bb73ee | 174 | sdata->vif.type == NL80211_IFTYPE_ADHOC) |
4150c572 | 175 | conf.bssid = sdata->u.sta.bssid; |
41bb73ee | 176 | else if (sdata->vif.type == NL80211_IFTYPE_AP) |
9d139c81 | 177 | conf.bssid = sdata->dev->dev_addr; |
41bb73ee | 178 | else if (ieee80211_vif_is_mesh(&sdata->vif)) { |
9d139c81 JB |
179 | u8 zero[ETH_ALEN] = { 0 }; |
180 | conf.bssid = zero; | |
9d139c81 JB |
181 | } else { |
182 | WARN_ON(1); | |
183 | return -EINVAL; | |
f0706e82 | 184 | } |
f0706e82 | 185 | |
9d139c81 JB |
186 | if (WARN_ON(!conf.bssid && (changed & IEEE80211_IFCC_BSSID))) |
187 | return -EINVAL; | |
f0706e82 | 188 | |
9d139c81 JB |
189 | return local->ops->config_interface(local_to_hw(local), |
190 | &sdata->vif, &conf); | |
b2c258fb | 191 | } |
f0706e82 | 192 | |
e8975581 | 193 | int ieee80211_hw_config(struct ieee80211_local *local, u32 changed) |
b2c258fb | 194 | { |
b2c258fb JB |
195 | struct ieee80211_channel *chan; |
196 | int ret = 0; | |
e8975581 | 197 | int power; |
72bdcf34 | 198 | enum nl80211_sec_chan_offset sec_chan_offset; |
f0706e82 | 199 | |
cb121bad JB |
200 | might_sleep(); |
201 | ||
72bdcf34 | 202 | if (local->sw_scanning) { |
b2c258fb | 203 | chan = local->scan_channel; |
72bdcf34 JM |
204 | sec_chan_offset = NL80211_SEC_CHAN_NO_HT; |
205 | } else { | |
b2c258fb | 206 | chan = local->oper_channel; |
72bdcf34 JM |
207 | sec_chan_offset = local->oper_sec_chan_offset; |
208 | } | |
f0706e82 | 209 | |
72bdcf34 JM |
210 | if (chan != local->hw.conf.channel || |
211 | sec_chan_offset != local->hw.conf.ht.sec_chan_offset) { | |
e8975581 | 212 | local->hw.conf.channel = chan; |
72bdcf34 JM |
213 | switch (sec_chan_offset) { |
214 | case NL80211_SEC_CHAN_NO_HT: | |
215 | local->hw.conf.ht.enabled = false; | |
216 | local->hw.conf.ht.sec_chan_offset = 0; | |
217 | break; | |
218 | case NL80211_SEC_CHAN_DISABLED: | |
219 | local->hw.conf.ht.enabled = true; | |
220 | local->hw.conf.ht.sec_chan_offset = 0; | |
221 | break; | |
222 | case NL80211_SEC_CHAN_BELOW: | |
223 | local->hw.conf.ht.enabled = true; | |
224 | local->hw.conf.ht.sec_chan_offset = -1; | |
225 | break; | |
226 | case NL80211_SEC_CHAN_ABOVE: | |
227 | local->hw.conf.ht.enabled = true; | |
228 | local->hw.conf.ht.sec_chan_offset = 1; | |
229 | break; | |
230 | } | |
e8975581 JB |
231 | changed |= IEEE80211_CONF_CHANGE_CHANNEL; |
232 | } | |
8318d78a JB |
233 | |
234 | if (!local->hw.conf.power_level) | |
e8975581 | 235 | power = chan->max_power; |
8318d78a | 236 | else |
e8975581 JB |
237 | power = min(chan->max_power, local->hw.conf.power_level); |
238 | if (local->hw.conf.power_level != power) { | |
239 | changed |= IEEE80211_CONF_CHANGE_POWER; | |
240 | local->hw.conf.power_level = power; | |
241 | } | |
b2c258fb | 242 | |
e8975581 JB |
243 | if (changed && local->open_count) { |
244 | ret = local->ops->config(local_to_hw(local), changed); | |
d73782fd | 245 | /* |
447107fb | 246 | * Goal: |
d73782fd JB |
247 | * HW reconfiguration should never fail, the driver has told |
248 | * us what it can support so it should live up to that promise. | |
447107fb RC |
249 | * |
250 | * Current status: | |
251 | * rfkill is not integrated with mac80211 and a | |
252 | * configuration command can thus fail if hardware rfkill | |
253 | * is enabled | |
254 | * | |
255 | * FIXME: integrate rfkill with mac80211 and then add this | |
256 | * WARN_ON() back | |
257 | * | |
d73782fd | 258 | */ |
447107fb | 259 | /* WARN_ON(ret); */ |
d73782fd | 260 | } |
f0706e82 | 261 | |
b2c258fb JB |
262 | return ret; |
263 | } | |
f0706e82 | 264 | |
471b3efd JB |
265 | void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, |
266 | u32 changed) | |
d9430a32 | 267 | { |
471b3efd JB |
268 | struct ieee80211_local *local = sdata->local; |
269 | ||
7a725f73 JB |
270 | if (WARN_ON(sdata->vif.type == NL80211_IFTYPE_AP_VLAN)) |
271 | return; | |
272 | ||
471b3efd JB |
273 | if (!changed) |
274 | return; | |
275 | ||
276 | if (local->ops->bss_info_changed) | |
277 | local->ops->bss_info_changed(local_to_hw(local), | |
278 | &sdata->vif, | |
bda3933a | 279 | &sdata->vif.bss_conf, |
471b3efd | 280 | changed); |
d9430a32 DD |
281 | } |
282 | ||
f698d856 | 283 | u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata) |
d9430a32 | 284 | { |
bda3933a JB |
285 | sdata->vif.bss_conf.use_cts_prot = false; |
286 | sdata->vif.bss_conf.use_short_preamble = false; | |
287 | sdata->vif.bss_conf.use_short_slot = false; | |
7a5158ef JB |
288 | return BSS_CHANGED_ERP_CTS_PROT | |
289 | BSS_CHANGED_ERP_PREAMBLE | | |
290 | BSS_CHANGED_ERP_SLOT; | |
d9430a32 DD |
291 | } |
292 | ||
f0706e82 | 293 | void ieee80211_tx_status_irqsafe(struct ieee80211_hw *hw, |
e039fa4a | 294 | struct sk_buff *skb) |
f0706e82 JB |
295 | { |
296 | struct ieee80211_local *local = hw_to_local(hw); | |
e039fa4a | 297 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
f0706e82 JB |
298 | int tmp; |
299 | ||
300 | skb->dev = local->mdev; | |
f0706e82 | 301 | skb->pkt_type = IEEE80211_TX_STATUS_MSG; |
e039fa4a | 302 | skb_queue_tail(info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS ? |
f0706e82 JB |
303 | &local->skb_queue : &local->skb_queue_unreliable, skb); |
304 | tmp = skb_queue_len(&local->skb_queue) + | |
305 | skb_queue_len(&local->skb_queue_unreliable); | |
306 | while (tmp > IEEE80211_IRQSAFE_QUEUE_LIMIT && | |
307 | (skb = skb_dequeue(&local->skb_queue_unreliable))) { | |
f0706e82 JB |
308 | dev_kfree_skb_irq(skb); |
309 | tmp--; | |
310 | I802_DEBUG_INC(local->tx_status_drop); | |
311 | } | |
312 | tasklet_schedule(&local->tasklet); | |
313 | } | |
314 | EXPORT_SYMBOL(ieee80211_tx_status_irqsafe); | |
315 | ||
316 | static void ieee80211_tasklet_handler(unsigned long data) | |
317 | { | |
318 | struct ieee80211_local *local = (struct ieee80211_local *) data; | |
319 | struct sk_buff *skb; | |
320 | struct ieee80211_rx_status rx_status; | |
eadc8d9e | 321 | struct ieee80211_ra_tid *ra_tid; |
f0706e82 JB |
322 | |
323 | while ((skb = skb_dequeue(&local->skb_queue)) || | |
324 | (skb = skb_dequeue(&local->skb_queue_unreliable))) { | |
325 | switch (skb->pkt_type) { | |
326 | case IEEE80211_RX_MSG: | |
327 | /* status is in skb->cb */ | |
328 | memcpy(&rx_status, skb->cb, sizeof(rx_status)); | |
51fb61e7 | 329 | /* Clear skb->pkt_type in order to not confuse kernel |
f0706e82 JB |
330 | * netstack. */ |
331 | skb->pkt_type = 0; | |
332 | __ieee80211_rx(local_to_hw(local), skb, &rx_status); | |
333 | break; | |
334 | case IEEE80211_TX_STATUS_MSG: | |
f0706e82 | 335 | skb->pkt_type = 0; |
e039fa4a | 336 | ieee80211_tx_status(local_to_hw(local), skb); |
f0706e82 | 337 | break; |
eadc8d9e RR |
338 | case IEEE80211_DELBA_MSG: |
339 | ra_tid = (struct ieee80211_ra_tid *) &skb->cb; | |
340 | ieee80211_stop_tx_ba_cb(local_to_hw(local), | |
341 | ra_tid->ra, ra_tid->tid); | |
342 | dev_kfree_skb(skb); | |
343 | break; | |
344 | case IEEE80211_ADDBA_MSG: | |
345 | ra_tid = (struct ieee80211_ra_tid *) &skb->cb; | |
346 | ieee80211_start_tx_ba_cb(local_to_hw(local), | |
347 | ra_tid->ra, ra_tid->tid); | |
348 | dev_kfree_skb(skb); | |
349 | break ; | |
f4ea83dd JB |
350 | default: |
351 | WARN_ON(1); | |
f0706e82 JB |
352 | dev_kfree_skb(skb); |
353 | break; | |
354 | } | |
355 | } | |
356 | } | |
357 | ||
f0706e82 JB |
358 | /* Remove added headers (e.g., QoS control), encryption header/MIC, etc. to |
359 | * make a prepared TX frame (one that has been given to hw) to look like brand | |
360 | * new IEEE 802.11 frame that is ready to go through TX processing again. | |
d0f09804 | 361 | */ |
f0706e82 JB |
362 | static void ieee80211_remove_tx_extra(struct ieee80211_local *local, |
363 | struct ieee80211_key *key, | |
e039fa4a | 364 | struct sk_buff *skb) |
f0706e82 | 365 | { |
62bf1d76 HH |
366 | unsigned int hdrlen, iv_len, mic_len; |
367 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; | |
f0706e82 | 368 | |
62bf1d76 | 369 | hdrlen = ieee80211_hdrlen(hdr->frame_control); |
f0706e82 JB |
370 | |
371 | if (!key) | |
372 | goto no_key; | |
373 | ||
8f20fc24 | 374 | switch (key->conf.alg) { |
f0706e82 JB |
375 | case ALG_WEP: |
376 | iv_len = WEP_IV_LEN; | |
377 | mic_len = WEP_ICV_LEN; | |
378 | break; | |
379 | case ALG_TKIP: | |
380 | iv_len = TKIP_IV_LEN; | |
381 | mic_len = TKIP_ICV_LEN; | |
382 | break; | |
383 | case ALG_CCMP: | |
384 | iv_len = CCMP_HDR_LEN; | |
385 | mic_len = CCMP_MIC_LEN; | |
386 | break; | |
387 | default: | |
388 | goto no_key; | |
389 | } | |
390 | ||
62bf1d76 | 391 | if (skb->len >= hdrlen + mic_len && |
11a843b7 | 392 | !(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)) |
f0706e82 | 393 | skb_trim(skb, skb->len - mic_len); |
62bf1d76 | 394 | if (skb->len >= hdrlen + iv_len) { |
f0706e82 | 395 | memmove(skb->data + iv_len, skb->data, hdrlen); |
62bf1d76 | 396 | hdr = (struct ieee80211_hdr *)skb_pull(skb, iv_len); |
f0706e82 JB |
397 | } |
398 | ||
399 | no_key: | |
62bf1d76 HH |
400 | if (ieee80211_is_data_qos(hdr->frame_control)) { |
401 | hdr->frame_control &= ~cpu_to_le16(IEEE80211_STYPE_QOS_DATA); | |
402 | memmove(skb->data + IEEE80211_QOS_CTL_LEN, skb->data, | |
403 | hdrlen - IEEE80211_QOS_CTL_LEN); | |
404 | skb_pull(skb, IEEE80211_QOS_CTL_LEN); | |
f0706e82 JB |
405 | } |
406 | } | |
407 | ||
d46e144b JB |
408 | static void ieee80211_handle_filtered_frame(struct ieee80211_local *local, |
409 | struct sta_info *sta, | |
e039fa4a | 410 | struct sk_buff *skb) |
d46e144b JB |
411 | { |
412 | sta->tx_filtered_count++; | |
413 | ||
414 | /* | |
415 | * Clear the TX filter mask for this STA when sending the next | |
416 | * packet. If the STA went to power save mode, this will happen | |
f6d97104 | 417 | * when it wakes up for the next time. |
d46e144b | 418 | */ |
07346f81 | 419 | set_sta_flags(sta, WLAN_STA_CLEAR_PS_FILT); |
d46e144b JB |
420 | |
421 | /* | |
422 | * This code races in the following way: | |
423 | * | |
424 | * (1) STA sends frame indicating it will go to sleep and does so | |
425 | * (2) hardware/firmware adds STA to filter list, passes frame up | |
426 | * (3) hardware/firmware processes TX fifo and suppresses a frame | |
427 | * (4) we get TX status before having processed the frame and | |
428 | * knowing that the STA has gone to sleep. | |
429 | * | |
430 | * This is actually quite unlikely even when both those events are | |
431 | * processed from interrupts coming in quickly after one another or | |
432 | * even at the same time because we queue both TX status events and | |
433 | * RX frames to be processed by a tasklet and process them in the | |
434 | * same order that they were received or TX status last. Hence, there | |
435 | * is no race as long as the frame RX is processed before the next TX | |
436 | * status, which drivers can ensure, see below. | |
437 | * | |
438 | * Note that this can only happen if the hardware or firmware can | |
439 | * actually add STAs to the filter list, if this is done by the | |
440 | * driver in response to set_tim() (which will only reduce the race | |
441 | * this whole filtering tries to solve, not completely solve it) | |
442 | * this situation cannot happen. | |
443 | * | |
444 | * To completely solve this race drivers need to make sure that they | |
445 | * (a) don't mix the irq-safe/not irq-safe TX status/RX processing | |
446 | * functions and | |
447 | * (b) always process RX events before TX status events if ordering | |
448 | * can be unknown, for example with different interrupt status | |
449 | * bits. | |
450 | */ | |
07346f81 | 451 | if (test_sta_flags(sta, WLAN_STA_PS) && |
d46e144b | 452 | skb_queue_len(&sta->tx_filtered) < STA_MAX_TX_BUFFER) { |
e039fa4a | 453 | ieee80211_remove_tx_extra(local, sta->key, skb); |
d46e144b JB |
454 | skb_queue_tail(&sta->tx_filtered, skb); |
455 | return; | |
456 | } | |
457 | ||
8b30b1fe | 458 | if (!test_sta_flags(sta, WLAN_STA_PS) && !skb->requeue) { |
d46e144b | 459 | /* Software retry the packet once */ |
8b30b1fe | 460 | skb->requeue = 1; |
e039fa4a | 461 | ieee80211_remove_tx_extra(local, sta->key, skb); |
d46e144b JB |
462 | dev_queue_xmit(skb); |
463 | return; | |
464 | } | |
465 | ||
f4ea83dd | 466 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
d46e144b JB |
467 | if (net_ratelimit()) |
468 | printk(KERN_DEBUG "%s: dropped TX filtered frame, " | |
469 | "queue_len=%d PS=%d @%lu\n", | |
470 | wiphy_name(local->hw.wiphy), | |
471 | skb_queue_len(&sta->tx_filtered), | |
07346f81 | 472 | !!test_sta_flags(sta, WLAN_STA_PS), jiffies); |
f4ea83dd | 473 | #endif |
d46e144b JB |
474 | dev_kfree_skb(skb); |
475 | } | |
476 | ||
e039fa4a | 477 | void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb) |
f0706e82 JB |
478 | { |
479 | struct sk_buff *skb2; | |
480 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; | |
481 | struct ieee80211_local *local = hw_to_local(hw); | |
e039fa4a | 482 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
f0706e82 | 483 | u16 frag, type; |
429a3805 | 484 | __le16 fc; |
4b7679a5 | 485 | struct ieee80211_supported_band *sband; |
b306f453 JB |
486 | struct ieee80211_tx_status_rtap_hdr *rthdr; |
487 | struct ieee80211_sub_if_data *sdata; | |
3d30d949 | 488 | struct net_device *prev_dev = NULL; |
429a3805 | 489 | struct sta_info *sta; |
e6a9854b JB |
490 | int retry_count = -1, i; |
491 | ||
492 | for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) { | |
493 | /* the HW cannot have attempted that rate */ | |
494 | if (i >= hw->max_rates) { | |
495 | info->status.rates[i].idx = -1; | |
496 | info->status.rates[i].count = 0; | |
497 | } | |
498 | ||
499 | retry_count += info->status.rates[i].count; | |
500 | } | |
501 | if (retry_count < 0) | |
502 | retry_count = 0; | |
f0706e82 | 503 | |
d0709a65 JB |
504 | rcu_read_lock(); |
505 | ||
e6a9854b JB |
506 | sband = local->hw.wiphy->bands[info->band]; |
507 | ||
95dac040 JB |
508 | sta = sta_info_get(local, hdr->addr1); |
509 | ||
510 | if (sta) { | |
e6a9854b | 511 | if (!(info->flags & IEEE80211_TX_STAT_ACK) && |
95dac040 JB |
512 | test_sta_flags(sta, WLAN_STA_PS)) { |
513 | /* | |
514 | * The STA is in power save mode, so assume | |
515 | * that this TX packet failed because of that. | |
516 | */ | |
517 | ieee80211_handle_filtered_frame(local, sta, skb); | |
518 | rcu_read_unlock(); | |
519 | return; | |
f0706e82 | 520 | } |
f0706e82 | 521 | |
95dac040 JB |
522 | fc = hdr->frame_control; |
523 | ||
524 | if ((info->flags & IEEE80211_TX_STAT_AMPDU_NO_BACK) && | |
525 | (ieee80211_is_data_qos(fc))) { | |
526 | u16 tid, ssn; | |
527 | u8 *qc; | |
429a3805 | 528 | |
429a3805 RR |
529 | qc = ieee80211_get_qos_ctl(hdr); |
530 | tid = qc[0] & 0xf; | |
531 | ssn = ((le16_to_cpu(hdr->seq_ctrl) + 0x10) | |
532 | & IEEE80211_SCTL_SEQ); | |
f698d856 | 533 | ieee80211_send_bar(sta->sdata, hdr->addr1, |
429a3805 RR |
534 | tid, ssn); |
535 | } | |
429a3805 | 536 | |
95dac040 | 537 | if (info->flags & IEEE80211_TX_STAT_TX_FILTERED) { |
e039fa4a | 538 | ieee80211_handle_filtered_frame(local, sta, skb); |
d0709a65 | 539 | rcu_read_unlock(); |
f0706e82 | 540 | return; |
95dac040 | 541 | } else { |
e6a9854b | 542 | if (!(info->flags & IEEE80211_TX_STAT_ACK)) |
95dac040 | 543 | sta->tx_retry_failed++; |
e6a9854b | 544 | sta->tx_retry_count += retry_count; |
f0706e82 | 545 | } |
95dac040 | 546 | |
4b7679a5 | 547 | rate_control_tx_status(local, sband, sta, skb); |
95dac040 | 548 | } |
f0706e82 | 549 | |
d0709a65 JB |
550 | rcu_read_unlock(); |
551 | ||
f0706e82 JB |
552 | ieee80211_led_tx(local, 0); |
553 | ||
554 | /* SNMP counters | |
555 | * Fragments are passed to low-level drivers as separate skbs, so these | |
556 | * are actually fragments, not frames. Update frame counters only for | |
557 | * the first fragment of the frame. */ | |
558 | ||
559 | frag = le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_FRAG; | |
560 | type = le16_to_cpu(hdr->frame_control) & IEEE80211_FCTL_FTYPE; | |
561 | ||
e039fa4a | 562 | if (info->flags & IEEE80211_TX_STAT_ACK) { |
f0706e82 JB |
563 | if (frag == 0) { |
564 | local->dot11TransmittedFrameCount++; | |
565 | if (is_multicast_ether_addr(hdr->addr1)) | |
566 | local->dot11MulticastTransmittedFrameCount++; | |
e6a9854b | 567 | if (retry_count > 0) |
f0706e82 | 568 | local->dot11RetryCount++; |
e6a9854b | 569 | if (retry_count > 1) |
f0706e82 JB |
570 | local->dot11MultipleRetryCount++; |
571 | } | |
572 | ||
573 | /* This counter shall be incremented for an acknowledged MPDU | |
574 | * with an individual address in the address 1 field or an MPDU | |
575 | * with a multicast address in the address 1 field of type Data | |
576 | * or Management. */ | |
577 | if (!is_multicast_ether_addr(hdr->addr1) || | |
578 | type == IEEE80211_FTYPE_DATA || | |
579 | type == IEEE80211_FTYPE_MGMT) | |
580 | local->dot11TransmittedFragmentCount++; | |
581 | } else { | |
582 | if (frag == 0) | |
583 | local->dot11FailedCount++; | |
584 | } | |
585 | ||
b306f453 JB |
586 | /* this was a transmitted frame, but now we want to reuse it */ |
587 | skb_orphan(skb); | |
588 | ||
3d30d949 MW |
589 | /* |
590 | * This is a bit racy but we can avoid a lot of work | |
591 | * with this test... | |
592 | */ | |
593 | if (!local->monitors && !local->cooked_mntrs) { | |
f0706e82 JB |
594 | dev_kfree_skb(skb); |
595 | return; | |
596 | } | |
597 | ||
b306f453 | 598 | /* send frame to monitor interfaces now */ |
f0706e82 | 599 | |
b306f453 JB |
600 | if (skb_headroom(skb) < sizeof(*rthdr)) { |
601 | printk(KERN_ERR "ieee80211_tx_status: headroom too small\n"); | |
f0706e82 JB |
602 | dev_kfree_skb(skb); |
603 | return; | |
604 | } | |
f0706e82 | 605 | |
988c0f72 | 606 | rthdr = (struct ieee80211_tx_status_rtap_hdr *) |
b306f453 JB |
607 | skb_push(skb, sizeof(*rthdr)); |
608 | ||
609 | memset(rthdr, 0, sizeof(*rthdr)); | |
610 | rthdr->hdr.it_len = cpu_to_le16(sizeof(*rthdr)); | |
611 | rthdr->hdr.it_present = | |
612 | cpu_to_le32((1 << IEEE80211_RADIOTAP_TX_FLAGS) | | |
e6a9854b JB |
613 | (1 << IEEE80211_RADIOTAP_DATA_RETRIES) | |
614 | (1 << IEEE80211_RADIOTAP_RATE)); | |
b306f453 | 615 | |
e039fa4a | 616 | if (!(info->flags & IEEE80211_TX_STAT_ACK) && |
b306f453 JB |
617 | !is_multicast_ether_addr(hdr->addr1)) |
618 | rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_FAIL); | |
619 | ||
e6a9854b JB |
620 | /* |
621 | * XXX: Once radiotap gets the bitmap reset thing the vendor | |
622 | * extensions proposal contains, we can actually report | |
623 | * the whole set of tries we did. | |
624 | */ | |
625 | if ((info->status.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) || | |
626 | (info->status.rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT)) | |
b306f453 | 627 | rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_CTS); |
e6a9854b | 628 | else if (info->status.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) |
b306f453 | 629 | rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_RTS); |
e6a9854b JB |
630 | if (info->status.rates[0].idx >= 0 && |
631 | !(info->status.rates[0].flags & IEEE80211_TX_RC_MCS)) | |
632 | rthdr->rate = sband->bitrates[ | |
633 | info->status.rates[0].idx].bitrate / 5; | |
b306f453 | 634 | |
e6a9854b JB |
635 | /* for now report the total retry_count */ |
636 | rthdr->data_retries = retry_count; | |
b306f453 | 637 | |
3d30d949 MW |
638 | /* XXX: is this sufficient for BPF? */ |
639 | skb_set_mac_header(skb, 0); | |
640 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
641 | skb->pkt_type = PACKET_OTHERHOST; | |
642 | skb->protocol = htons(ETH_P_802_2); | |
643 | memset(skb->cb, 0, sizeof(skb->cb)); | |
644 | ||
79010420 | 645 | rcu_read_lock(); |
79010420 | 646 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { |
05c914fe | 647 | if (sdata->vif.type == NL80211_IFTYPE_MONITOR) { |
b306f453 JB |
648 | if (!netif_running(sdata->dev)) |
649 | continue; | |
3d30d949 MW |
650 | |
651 | if (prev_dev) { | |
79010420 | 652 | skb2 = skb_clone(skb, GFP_ATOMIC); |
3d30d949 MW |
653 | if (skb2) { |
654 | skb2->dev = prev_dev; | |
655 | netif_rx(skb2); | |
656 | } | |
657 | } | |
658 | ||
659 | prev_dev = sdata->dev; | |
b306f453 JB |
660 | } |
661 | } | |
3d30d949 MW |
662 | if (prev_dev) { |
663 | skb->dev = prev_dev; | |
664 | netif_rx(skb); | |
665 | skb = NULL; | |
666 | } | |
79010420 | 667 | rcu_read_unlock(); |
3d30d949 | 668 | dev_kfree_skb(skb); |
f0706e82 JB |
669 | } |
670 | EXPORT_SYMBOL(ieee80211_tx_status); | |
671 | ||
f0706e82 JB |
672 | struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len, |
673 | const struct ieee80211_ops *ops) | |
674 | { | |
f0706e82 | 675 | struct ieee80211_local *local; |
f0706e82 JB |
676 | int priv_size; |
677 | struct wiphy *wiphy; | |
678 | ||
679 | /* Ensure 32-byte alignment of our private data and hw private data. | |
680 | * We use the wiphy priv data for both our ieee80211_local and for | |
681 | * the driver's private data | |
682 | * | |
683 | * In memory it'll be like this: | |
684 | * | |
685 | * +-------------------------+ | |
686 | * | struct wiphy | | |
687 | * +-------------------------+ | |
688 | * | struct ieee80211_local | | |
689 | * +-------------------------+ | |
690 | * | driver's private data | | |
691 | * +-------------------------+ | |
692 | * | |
693 | */ | |
694 | priv_size = ((sizeof(struct ieee80211_local) + | |
695 | NETDEV_ALIGN_CONST) & ~NETDEV_ALIGN_CONST) + | |
696 | priv_data_len; | |
697 | ||
698 | wiphy = wiphy_new(&mac80211_config_ops, priv_size); | |
699 | ||
700 | if (!wiphy) | |
701 | return NULL; | |
702 | ||
703 | wiphy->privid = mac80211_wiphy_privid; | |
704 | ||
705 | local = wiphy_priv(wiphy); | |
706 | local->hw.wiphy = wiphy; | |
707 | ||
708 | local->hw.priv = (char *)local + | |
709 | ((sizeof(struct ieee80211_local) + | |
710 | NETDEV_ALIGN_CONST) & ~NETDEV_ALIGN_CONST); | |
711 | ||
4480f15c | 712 | BUG_ON(!ops->tx); |
4150c572 JB |
713 | BUG_ON(!ops->start); |
714 | BUG_ON(!ops->stop); | |
4480f15c JB |
715 | BUG_ON(!ops->config); |
716 | BUG_ON(!ops->add_interface); | |
4150c572 JB |
717 | BUG_ON(!ops->remove_interface); |
718 | BUG_ON(!ops->configure_filter); | |
f0706e82 JB |
719 | local->ops = ops; |
720 | ||
e6a9854b JB |
721 | /* set up some defaults */ |
722 | local->hw.queues = 1; | |
723 | local->hw.max_rates = 1; | |
f0706e82 JB |
724 | local->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD; |
725 | local->fragmentation_threshold = IEEE80211_MAX_FRAG_THRESHOLD; | |
9124b077 JB |
726 | local->hw.conf.long_frame_max_tx_count = 4; |
727 | local->hw.conf.short_frame_max_tx_count = 7; | |
e8975581 | 728 | local->hw.conf.radio_enabled = true; |
f0706e82 | 729 | |
79010420 | 730 | INIT_LIST_HEAD(&local->interfaces); |
f0706e82 | 731 | |
b16bd15c JB |
732 | spin_lock_init(&local->key_lock); |
733 | ||
c2b13452 | 734 | INIT_DELAYED_WORK(&local->scan_work, ieee80211_scan_work); |
f0706e82 JB |
735 | |
736 | sta_info_init(local); | |
737 | ||
f0706e82 JB |
738 | tasklet_init(&local->tx_pending_tasklet, ieee80211_tx_pending, |
739 | (unsigned long)local); | |
740 | tasklet_disable(&local->tx_pending_tasklet); | |
741 | ||
742 | tasklet_init(&local->tasklet, | |
743 | ieee80211_tasklet_handler, | |
744 | (unsigned long) local); | |
745 | tasklet_disable(&local->tasklet); | |
746 | ||
747 | skb_queue_head_init(&local->skb_queue); | |
748 | skb_queue_head_init(&local->skb_queue_unreliable); | |
749 | ||
750 | return local_to_hw(local); | |
751 | } | |
752 | EXPORT_SYMBOL(ieee80211_alloc_hw); | |
753 | ||
754 | int ieee80211_register_hw(struct ieee80211_hw *hw) | |
755 | { | |
756 | struct ieee80211_local *local = hw_to_local(hw); | |
f0706e82 | 757 | int result; |
8318d78a | 758 | enum ieee80211_band band; |
96d51056 | 759 | struct net_device *mdev; |
133b8226 | 760 | struct ieee80211_master_priv *mpriv; |
8318d78a JB |
761 | |
762 | /* | |
763 | * generic code guarantees at least one band, | |
764 | * set this very early because much code assumes | |
765 | * that hw.conf.channel is assigned | |
766 | */ | |
767 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { | |
768 | struct ieee80211_supported_band *sband; | |
769 | ||
770 | sband = local->hw.wiphy->bands[band]; | |
771 | if (sband) { | |
772 | /* init channel we're on */ | |
773 | local->hw.conf.channel = | |
774 | local->oper_channel = | |
775 | local->scan_channel = &sband->channels[0]; | |
776 | break; | |
777 | } | |
778 | } | |
f0706e82 | 779 | |
f59ac048 LR |
780 | /* if low-level driver supports AP, we also support VLAN */ |
781 | if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) | |
782 | local->hw.wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP_VLAN); | |
783 | ||
784 | /* mac80211 always supports monitor */ | |
785 | local->hw.wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR); | |
786 | ||
f0706e82 JB |
787 | result = wiphy_register(local->hw.wiphy); |
788 | if (result < 0) | |
789 | return result; | |
790 | ||
e2530083 JB |
791 | /* |
792 | * We use the number of queues for feature tests (QoS, HT) internally | |
793 | * so restrict them appropriately. | |
794 | */ | |
e2530083 JB |
795 | if (hw->queues > IEEE80211_MAX_QUEUES) |
796 | hw->queues = IEEE80211_MAX_QUEUES; | |
797 | if (hw->ampdu_queues > IEEE80211_MAX_AMPDU_QUEUES) | |
798 | hw->ampdu_queues = IEEE80211_MAX_AMPDU_QUEUES; | |
799 | if (hw->queues < 4) | |
800 | hw->ampdu_queues = 0; | |
e2530083 | 801 | |
133b8226 | 802 | mdev = alloc_netdev_mq(sizeof(struct ieee80211_master_priv), |
e2530083 JB |
803 | "wmaster%d", ether_setup, |
804 | ieee80211_num_queues(hw)); | |
96d51056 JB |
805 | if (!mdev) |
806 | goto fail_mdev_alloc; | |
807 | ||
133b8226 JB |
808 | mpriv = netdev_priv(mdev); |
809 | mpriv->local = local; | |
96d51056 JB |
810 | local->mdev = mdev; |
811 | ||
3e122be0 | 812 | ieee80211_rx_bss_list_init(local); |
96d51056 JB |
813 | |
814 | mdev->hard_start_xmit = ieee80211_master_start_xmit; | |
815 | mdev->open = ieee80211_master_open; | |
816 | mdev->stop = ieee80211_master_stop; | |
817 | mdev->type = ARPHRD_IEEE80211; | |
818 | mdev->header_ops = &ieee80211_header_ops; | |
819 | mdev->set_multicast_list = ieee80211_master_set_multicast_list; | |
820 | ||
4ada424d LR |
821 | local->hw.workqueue = |
822 | create_freezeable_workqueue(wiphy_name(local->hw.wiphy)); | |
f0706e82 JB |
823 | if (!local->hw.workqueue) { |
824 | result = -ENOMEM; | |
825 | goto fail_workqueue; | |
826 | } | |
827 | ||
b306f453 JB |
828 | /* |
829 | * The hardware needs headroom for sending the frame, | |
830 | * and we need some headroom for passing the frame to monitor | |
831 | * interfaces, but never both at the same time. | |
832 | */ | |
33ccad35 JB |
833 | local->tx_headroom = max_t(unsigned int , local->hw.extra_tx_headroom, |
834 | sizeof(struct ieee80211_tx_status_rtap_hdr)); | |
b306f453 | 835 | |
e9f207f0 JB |
836 | debugfs_hw_add(local); |
837 | ||
dc0ae30c TW |
838 | if (local->hw.conf.beacon_int < 10) |
839 | local->hw.conf.beacon_int = 100; | |
f0706e82 | 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 | ||
566bfe5a BR |
846 | local->wstats_flags |= local->hw.flags & (IEEE80211_HW_SIGNAL_UNSPEC | |
847 | IEEE80211_HW_SIGNAL_DB | | |
848 | IEEE80211_HW_SIGNAL_DBM) ? | |
f0706e82 | 849 | IW_QUAL_QUAL_UPDATED : IW_QUAL_QUAL_INVALID; |
566bfe5a | 850 | local->wstats_flags |= local->hw.flags & IEEE80211_HW_NOISE_DBM ? |
f0706e82 | 851 | IW_QUAL_NOISE_UPDATED : IW_QUAL_NOISE_INVALID; |
566bfe5a | 852 | if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM) |
f0706e82 JB |
853 | local->wstats_flags |= IW_QUAL_DBM; |
854 | ||
855 | result = sta_info_start(local); | |
856 | if (result < 0) | |
857 | goto fail_sta_info; | |
858 | ||
859 | rtnl_lock(); | |
860 | result = dev_alloc_name(local->mdev, local->mdev->name); | |
861 | if (result < 0) | |
862 | goto fail_dev; | |
863 | ||
864 | memcpy(local->mdev->dev_addr, local->hw.wiphy->perm_addr, ETH_ALEN); | |
865 | SET_NETDEV_DEV(local->mdev, wiphy_dev(local->hw.wiphy)); | |
866 | ||
867 | result = register_netdevice(local->mdev); | |
868 | if (result < 0) | |
869 | goto fail_dev; | |
870 | ||
830f9038 JB |
871 | result = ieee80211_init_rate_ctrl_alg(local, |
872 | hw->rate_control_algorithm); | |
f0706e82 JB |
873 | if (result < 0) { |
874 | printk(KERN_DEBUG "%s: Failed to initialize rate control " | |
dd1cd4c6 | 875 | "algorithm\n", wiphy_name(local->hw.wiphy)); |
f0706e82 JB |
876 | goto fail_rate; |
877 | } | |
878 | ||
879 | result = ieee80211_wep_init(local); | |
880 | ||
881 | if (result < 0) { | |
023a04be JF |
882 | printk(KERN_DEBUG "%s: Failed to initialize wep: %d\n", |
883 | wiphy_name(local->hw.wiphy), result); | |
f0706e82 JB |
884 | goto fail_wep; |
885 | } | |
886 | ||
51cb6db0 | 887 | local->mdev->select_queue = ieee80211_select_queue; |
f0706e82 | 888 | |
8dffff21 JB |
889 | /* add one default STA interface if supported */ |
890 | if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_STATION)) { | |
891 | result = ieee80211_if_add(local, "wlan%d", NULL, | |
892 | NL80211_IFTYPE_STATION, NULL); | |
893 | if (result) | |
894 | printk(KERN_WARNING "%s: Failed to add default virtual iface\n", | |
895 | wiphy_name(local->hw.wiphy)); | |
896 | } | |
f0706e82 | 897 | |
f0706e82 JB |
898 | rtnl_unlock(); |
899 | ||
900 | ieee80211_led_init(local); | |
901 | ||
902 | return 0; | |
903 | ||
904 | fail_wep: | |
905 | rate_control_deinitialize(local); | |
906 | fail_rate: | |
907 | unregister_netdevice(local->mdev); | |
339a7c41 | 908 | local->mdev = NULL; |
f0706e82 JB |
909 | fail_dev: |
910 | rtnl_unlock(); | |
911 | sta_info_stop(local); | |
912 | fail_sta_info: | |
e9f207f0 | 913 | debugfs_hw_del(local); |
f0706e82 JB |
914 | destroy_workqueue(local->hw.workqueue); |
915 | fail_workqueue: | |
3e122be0 JB |
916 | if (local->mdev) |
917 | free_netdev(local->mdev); | |
96d51056 | 918 | fail_mdev_alloc: |
f0706e82 JB |
919 | wiphy_unregister(local->hw.wiphy); |
920 | return result; | |
921 | } | |
922 | EXPORT_SYMBOL(ieee80211_register_hw); | |
923 | ||
f0706e82 JB |
924 | void ieee80211_unregister_hw(struct ieee80211_hw *hw) |
925 | { | |
926 | struct ieee80211_local *local = hw_to_local(hw); | |
f0706e82 JB |
927 | |
928 | tasklet_kill(&local->tx_pending_tasklet); | |
929 | tasklet_kill(&local->tasklet); | |
930 | ||
931 | rtnl_lock(); | |
932 | ||
79010420 JB |
933 | /* |
934 | * At this point, interface list manipulations are fine | |
935 | * because the driver cannot be handing us frames any | |
936 | * more and the tasklet is killed. | |
937 | */ | |
5b2812e9 | 938 | |
75636525 JB |
939 | /* First, we remove all virtual interfaces. */ |
940 | ieee80211_remove_interfaces(local); | |
5b2812e9 JB |
941 | |
942 | /* then, finally, remove the master interface */ | |
3e122be0 | 943 | unregister_netdevice(local->mdev); |
f0706e82 JB |
944 | |
945 | rtnl_unlock(); | |
946 | ||
3e122be0 | 947 | ieee80211_rx_bss_list_deinit(local); |
f0706e82 JB |
948 | ieee80211_clear_tx_pending(local); |
949 | sta_info_stop(local); | |
950 | rate_control_deinitialize(local); | |
e9f207f0 | 951 | debugfs_hw_del(local); |
f0706e82 | 952 | |
f0706e82 JB |
953 | if (skb_queue_len(&local->skb_queue) |
954 | || skb_queue_len(&local->skb_queue_unreliable)) | |
955 | printk(KERN_WARNING "%s: skb_queue not empty\n", | |
dd1cd4c6 | 956 | wiphy_name(local->hw.wiphy)); |
f0706e82 JB |
957 | skb_queue_purge(&local->skb_queue); |
958 | skb_queue_purge(&local->skb_queue_unreliable); | |
959 | ||
960 | destroy_workqueue(local->hw.workqueue); | |
961 | wiphy_unregister(local->hw.wiphy); | |
962 | ieee80211_wep_free(local); | |
963 | ieee80211_led_exit(local); | |
3e122be0 | 964 | free_netdev(local->mdev); |
f0706e82 JB |
965 | } |
966 | EXPORT_SYMBOL(ieee80211_unregister_hw); | |
967 | ||
968 | void ieee80211_free_hw(struct ieee80211_hw *hw) | |
969 | { | |
970 | struct ieee80211_local *local = hw_to_local(hw); | |
971 | ||
f0706e82 JB |
972 | wiphy_free(local->hw.wiphy); |
973 | } | |
974 | EXPORT_SYMBOL(ieee80211_free_hw); | |
975 | ||
f0706e82 JB |
976 | static int __init ieee80211_init(void) |
977 | { | |
978 | struct sk_buff *skb; | |
979 | int ret; | |
980 | ||
e039fa4a JB |
981 | BUILD_BUG_ON(sizeof(struct ieee80211_tx_info) > sizeof(skb->cb)); |
982 | BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, driver_data) + | |
c6a1fa12 | 983 | IEEE80211_TX_INFO_DRIVER_DATA_SIZE > sizeof(skb->cb)); |
f0706e82 | 984 | |
cccf129f FF |
985 | ret = rc80211_minstrel_init(); |
986 | if (ret) | |
987 | return ret; | |
988 | ||
4b475898 | 989 | ret = rc80211_pid_init(); |
ad018375 | 990 | if (ret) |
51cb6db0 | 991 | return ret; |
f0706e82 | 992 | |
e9f207f0 JB |
993 | ieee80211_debugfs_netdev_init(); |
994 | ||
f0706e82 JB |
995 | return 0; |
996 | } | |
997 | ||
f0706e82 JB |
998 | static void __exit ieee80211_exit(void) |
999 | { | |
4b475898 | 1000 | rc80211_pid_exit(); |
cccf129f | 1001 | rc80211_minstrel_exit(); |
ac71c691 | 1002 | |
3b96766f JB |
1003 | /* |
1004 | * For key todo, it'll be empty by now but the work | |
1005 | * might still be scheduled. | |
1006 | */ | |
1007 | flush_scheduled_work(); | |
1008 | ||
f7a92144 LCC |
1009 | if (mesh_allocated) |
1010 | ieee80211s_stop(); | |
902acc78 | 1011 | |
e9f207f0 | 1012 | ieee80211_debugfs_netdev_exit(); |
f0706e82 JB |
1013 | } |
1014 | ||
1015 | ||
ca9938fe | 1016 | subsys_initcall(ieee80211_init); |
f0706e82 JB |
1017 | module_exit(ieee80211_exit); |
1018 | ||
1019 | MODULE_DESCRIPTION("IEEE 802.11 subsystem"); | |
1020 | MODULE_LICENSE("GPL"); |