]>
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 | ||
27 | #include "ieee80211_common.h" | |
28 | #include "ieee80211_i.h" | |
29 | #include "ieee80211_rate.h" | |
30 | #include "wep.h" | |
f0706e82 JB |
31 | #include "wme.h" |
32 | #include "aes_ccm.h" | |
33 | #include "ieee80211_led.h" | |
34 | #include "ieee80211_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; | |
44 | __le16 tx_flags; | |
45 | u8 data_retries; | |
46 | } __attribute__ ((packed)); | |
47 | ||
b2c258fb | 48 | /* common interface routines */ |
b306f453 | 49 | |
b2c258fb | 50 | static struct net_device_stats *ieee80211_get_stats(struct net_device *dev) |
f0706e82 | 51 | { |
b2c258fb JB |
52 | struct ieee80211_sub_if_data *sdata; |
53 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
54 | return &(sdata->stats); | |
55 | } | |
f0706e82 | 56 | |
b2c258fb JB |
57 | static int header_parse_80211(struct sk_buff *skb, unsigned char *haddr) |
58 | { | |
59 | memcpy(haddr, skb_mac_header(skb) + 10, ETH_ALEN); /* addr2 */ | |
60 | return ETH_ALEN; | |
61 | } | |
f0706e82 | 62 | |
b2c258fb | 63 | /* master interface */ |
f0706e82 | 64 | |
b2c258fb JB |
65 | static int ieee80211_master_open(struct net_device *dev) |
66 | { | |
67 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
68 | struct ieee80211_sub_if_data *sdata; | |
69 | int res = -EOPNOTSUPP; | |
f0706e82 | 70 | |
b2c258fb JB |
71 | read_lock(&local->sub_if_lock); |
72 | list_for_each_entry(sdata, &local->sub_if_list, list) { | |
73 | if (sdata->dev != dev && netif_running(sdata->dev)) { | |
74 | res = 0; | |
75 | break; | |
76 | } | |
77 | } | |
78 | read_unlock(&local->sub_if_lock); | |
79 | return res; | |
80 | } | |
f0706e82 | 81 | |
b2c258fb | 82 | static int ieee80211_master_stop(struct net_device *dev) |
f0706e82 | 83 | { |
b2c258fb JB |
84 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); |
85 | struct ieee80211_sub_if_data *sdata; | |
f0706e82 | 86 | |
b2c258fb JB |
87 | read_lock(&local->sub_if_lock); |
88 | list_for_each_entry(sdata, &local->sub_if_list, list) | |
89 | if (sdata->dev != dev && netif_running(sdata->dev)) | |
90 | dev_close(sdata->dev); | |
91 | read_unlock(&local->sub_if_lock); | |
f0706e82 | 92 | |
b2c258fb JB |
93 | return 0; |
94 | } | |
f0706e82 | 95 | |
b2c258fb | 96 | /* management interface */ |
f0706e82 | 97 | |
b2c258fb JB |
98 | static void |
99 | ieee80211_fill_frame_info(struct ieee80211_local *local, | |
100 | struct ieee80211_frame_info *fi, | |
101 | struct ieee80211_rx_status *status) | |
102 | { | |
103 | if (status) { | |
104 | struct timespec ts; | |
105 | struct ieee80211_rate *rate; | |
f0706e82 | 106 | |
b2c258fb JB |
107 | jiffies_to_timespec(jiffies, &ts); |
108 | fi->hosttime = cpu_to_be64((u64) ts.tv_sec * 1000000 + | |
109 | ts.tv_nsec / 1000); | |
110 | fi->mactime = cpu_to_be64(status->mactime); | |
111 | switch (status->phymode) { | |
f0706e82 | 112 | case MODE_IEEE80211A: |
b2c258fb | 113 | fi->phytype = htonl(ieee80211_phytype_ofdm_dot11_a); |
f0706e82 JB |
114 | break; |
115 | case MODE_IEEE80211B: | |
b2c258fb | 116 | fi->phytype = htonl(ieee80211_phytype_dsss_dot11_b); |
f0706e82 JB |
117 | break; |
118 | case MODE_IEEE80211G: | |
b2c258fb | 119 | fi->phytype = htonl(ieee80211_phytype_pbcc_dot11_g); |
f0706e82 JB |
120 | break; |
121 | case MODE_ATHEROS_TURBO: | |
b2c258fb JB |
122 | fi->phytype = |
123 | htonl(ieee80211_phytype_dsss_dot11_turbo); | |
f0706e82 | 124 | break; |
b2c258fb JB |
125 | default: |
126 | fi->phytype = htonl(0xAAAAAAAA); | |
f0706e82 JB |
127 | break; |
128 | } | |
b2c258fb JB |
129 | fi->channel = htonl(status->channel); |
130 | rate = ieee80211_get_rate(local, status->phymode, | |
131 | status->rate); | |
132 | if (rate) { | |
133 | fi->datarate = htonl(rate->rate); | |
134 | if (rate->flags & IEEE80211_RATE_PREAMBLE2) { | |
135 | if (status->rate == rate->val) | |
136 | fi->preamble = htonl(2); /* long */ | |
137 | else if (status->rate == rate->val2) | |
138 | fi->preamble = htonl(1); /* short */ | |
139 | } else | |
140 | fi->preamble = htonl(0); | |
141 | } else { | |
142 | fi->datarate = htonl(0); | |
143 | fi->preamble = htonl(0); | |
144 | } | |
145 | ||
146 | fi->antenna = htonl(status->antenna); | |
147 | fi->priority = htonl(0xffffffff); /* no clue */ | |
148 | fi->ssi_type = htonl(ieee80211_ssi_raw); | |
149 | fi->ssi_signal = htonl(status->ssi); | |
150 | fi->ssi_noise = 0x00000000; | |
151 | fi->encoding = 0; | |
152 | } else { | |
153 | /* clear everything because we really don't know. | |
154 | * the msg_type field isn't present on monitor frames | |
155 | * so we don't know whether it will be present or not, | |
156 | * but it's ok to not clear it since it'll be assigned | |
157 | * anyway */ | |
158 | memset(fi, 0, sizeof(*fi) - sizeof(fi->msg_type)); | |
159 | ||
160 | fi->ssi_type = htonl(ieee80211_ssi_none); | |
161 | } | |
162 | fi->version = htonl(IEEE80211_FI_VERSION); | |
163 | fi->length = cpu_to_be32(sizeof(*fi) - sizeof(fi->msg_type)); | |
164 | } | |
165 | ||
166 | /* this routine is actually not just for this, but also | |
167 | * for pushing fake 'management' frames into userspace. | |
168 | * it shall be replaced by a netlink-based system. */ | |
169 | void | |
170 | ieee80211_rx_mgmt(struct ieee80211_local *local, struct sk_buff *skb, | |
171 | struct ieee80211_rx_status *status, u32 msg_type) | |
172 | { | |
173 | struct ieee80211_frame_info *fi; | |
174 | const size_t hlen = sizeof(struct ieee80211_frame_info); | |
175 | struct ieee80211_sub_if_data *sdata; | |
176 | ||
177 | skb->dev = local->apdev; | |
178 | ||
179 | sdata = IEEE80211_DEV_TO_SUB_IF(local->apdev); | |
180 | ||
181 | if (skb_headroom(skb) < hlen) { | |
182 | I802_DEBUG_INC(local->rx_expand_skb_head); | |
183 | if (pskb_expand_head(skb, hlen, 0, GFP_ATOMIC)) { | |
184 | dev_kfree_skb(skb); | |
185 | return; | |
186 | } | |
f0706e82 | 187 | } |
b2c258fb JB |
188 | |
189 | fi = (struct ieee80211_frame_info *) skb_push(skb, hlen); | |
190 | ||
191 | ieee80211_fill_frame_info(local, fi, status); | |
192 | fi->msg_type = htonl(msg_type); | |
193 | ||
194 | sdata->stats.rx_packets++; | |
195 | sdata->stats.rx_bytes += skb->len; | |
196 | ||
197 | skb_set_mac_header(skb, 0); | |
198 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
199 | skb->pkt_type = PACKET_OTHERHOST; | |
200 | skb->protocol = htons(ETH_P_802_2); | |
201 | memset(skb->cb, 0, sizeof(skb->cb)); | |
202 | netif_rx(skb); | |
f0706e82 JB |
203 | } |
204 | ||
571ecf67 JB |
205 | void ieee80211_key_threshold_notify(struct net_device *dev, |
206 | struct ieee80211_key *key, | |
207 | struct sta_info *sta) | |
f0706e82 JB |
208 | { |
209 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
210 | struct sk_buff *skb; | |
211 | struct ieee80211_msg_key_notification *msg; | |
212 | ||
213 | /* if no one will get it anyway, don't even allocate it. | |
214 | * unlikely because this is only relevant for APs | |
215 | * where the device must be open... */ | |
216 | if (unlikely(!local->apdev)) | |
217 | return; | |
218 | ||
219 | skb = dev_alloc_skb(sizeof(struct ieee80211_frame_info) + | |
220 | sizeof(struct ieee80211_msg_key_notification)); | |
221 | if (!skb) | |
222 | return; | |
223 | ||
224 | skb_reserve(skb, sizeof(struct ieee80211_frame_info)); | |
225 | msg = (struct ieee80211_msg_key_notification *) | |
226 | skb_put(skb, sizeof(struct ieee80211_msg_key_notification)); | |
227 | msg->tx_rx_count = key->tx_rx_count; | |
228 | memcpy(msg->ifname, dev->name, IFNAMSIZ); | |
229 | if (sta) | |
230 | memcpy(msg->addr, sta->addr, ETH_ALEN); | |
231 | else | |
232 | memset(msg->addr, 0xff, ETH_ALEN); | |
233 | ||
234 | key->tx_rx_count = 0; | |
235 | ||
236 | ieee80211_rx_mgmt(local, skb, NULL, | |
237 | ieee80211_msg_key_threshold_notification); | |
238 | } | |
239 | ||
b2c258fb | 240 | static int ieee80211_mgmt_open(struct net_device *dev) |
f0706e82 | 241 | { |
b2c258fb | 242 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); |
f0706e82 | 243 | |
b2c258fb JB |
244 | if (!netif_running(local->mdev)) |
245 | return -EOPNOTSUPP; | |
246 | return 0; | |
e2ebc74d | 247 | } |
f0706e82 | 248 | |
b2c258fb | 249 | static int ieee80211_mgmt_stop(struct net_device *dev) |
e2ebc74d | 250 | { |
b2c258fb JB |
251 | return 0; |
252 | } | |
f0706e82 | 253 | |
b2c258fb JB |
254 | static int ieee80211_change_mtu_apdev(struct net_device *dev, int new_mtu) |
255 | { | |
256 | /* FIX: what would be proper limits for MTU? | |
257 | * This interface uses 802.11 frames. */ | |
258 | if (new_mtu < 256 || new_mtu > IEEE80211_MAX_DATA_LEN) { | |
259 | printk(KERN_WARNING "%s: invalid MTU %d\n", | |
260 | dev->name, new_mtu); | |
261 | return -EINVAL; | |
f0706e82 | 262 | } |
f0706e82 | 263 | |
b2c258fb JB |
264 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
265 | printk(KERN_DEBUG "%s: setting MTU %d\n", dev->name, new_mtu); | |
266 | #endif /* CONFIG_MAC80211_VERBOSE_DEBUG */ | |
267 | dev->mtu = new_mtu; | |
268 | return 0; | |
e2ebc74d | 269 | } |
f0706e82 | 270 | |
b2c258fb | 271 | void ieee80211_if_mgmt_setup(struct net_device *dev) |
e2ebc74d | 272 | { |
b2c258fb JB |
273 | ether_setup(dev); |
274 | dev->hard_start_xmit = ieee80211_mgmt_start_xmit; | |
275 | dev->change_mtu = ieee80211_change_mtu_apdev; | |
276 | dev->get_stats = ieee80211_get_stats; | |
277 | dev->open = ieee80211_mgmt_open; | |
278 | dev->stop = ieee80211_mgmt_stop; | |
279 | dev->type = ARPHRD_IEEE80211_PRISM; | |
280 | dev->hard_header_parse = header_parse_80211; | |
281 | dev->uninit = ieee80211_if_reinit; | |
282 | dev->destructor = ieee80211_if_free; | |
f0706e82 JB |
283 | } |
284 | ||
b2c258fb | 285 | /* regular interfaces */ |
f0706e82 | 286 | |
b2c258fb | 287 | static int ieee80211_change_mtu(struct net_device *dev, int new_mtu) |
f0706e82 | 288 | { |
b2c258fb JB |
289 | /* FIX: what would be proper limits for MTU? |
290 | * This interface uses 802.3 frames. */ | |
291 | if (new_mtu < 256 || new_mtu > IEEE80211_MAX_DATA_LEN - 24 - 6) { | |
292 | printk(KERN_WARNING "%s: invalid MTU %d\n", | |
293 | dev->name, new_mtu); | |
294 | return -EINVAL; | |
295 | } | |
f0706e82 | 296 | |
b2c258fb JB |
297 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
298 | printk(KERN_DEBUG "%s: setting MTU %d\n", dev->name, new_mtu); | |
299 | #endif /* CONFIG_MAC80211_VERBOSE_DEBUG */ | |
300 | dev->mtu = new_mtu; | |
f0706e82 JB |
301 | return 0; |
302 | } | |
303 | ||
b2c258fb JB |
304 | static inline int identical_mac_addr_allowed(int type1, int type2) |
305 | { | |
306 | return (type1 == IEEE80211_IF_TYPE_MNTR || | |
307 | type2 == IEEE80211_IF_TYPE_MNTR || | |
308 | (type1 == IEEE80211_IF_TYPE_AP && | |
309 | type2 == IEEE80211_IF_TYPE_WDS) || | |
310 | (type1 == IEEE80211_IF_TYPE_WDS && | |
311 | (type2 == IEEE80211_IF_TYPE_WDS || | |
312 | type2 == IEEE80211_IF_TYPE_AP)) || | |
313 | (type1 == IEEE80211_IF_TYPE_AP && | |
314 | type2 == IEEE80211_IF_TYPE_VLAN) || | |
315 | (type1 == IEEE80211_IF_TYPE_VLAN && | |
316 | (type2 == IEEE80211_IF_TYPE_AP || | |
317 | type2 == IEEE80211_IF_TYPE_VLAN))); | |
318 | } | |
f0706e82 | 319 | |
b2c258fb JB |
320 | /* Check if running monitor interfaces should go to a "soft monitor" mode |
321 | * and switch them if necessary. */ | |
322 | static inline void ieee80211_start_soft_monitor(struct ieee80211_local *local) | |
f0706e82 | 323 | { |
b2c258fb | 324 | struct ieee80211_if_init_conf conf; |
f0706e82 | 325 | |
b2c258fb JB |
326 | if (local->open_count && local->open_count == local->monitors && |
327 | !(local->hw.flags & IEEE80211_HW_MONITOR_DURING_OPER) && | |
328 | local->ops->remove_interface) { | |
329 | conf.if_id = -1; | |
330 | conf.type = IEEE80211_IF_TYPE_MNTR; | |
331 | conf.mac_addr = NULL; | |
332 | local->ops->remove_interface(local_to_hw(local), &conf); | |
f0706e82 | 333 | } |
f0706e82 JB |
334 | } |
335 | ||
b2c258fb JB |
336 | /* Check if running monitor interfaces should go to a "hard monitor" mode |
337 | * and switch them if necessary. */ | |
338 | static void ieee80211_start_hard_monitor(struct ieee80211_local *local) | |
f0706e82 | 339 | { |
b2c258fb | 340 | struct ieee80211_if_init_conf conf; |
f0706e82 | 341 | |
b2c258fb JB |
342 | if (local->open_count && local->open_count == local->monitors && |
343 | !(local->hw.flags & IEEE80211_HW_MONITOR_DURING_OPER)) { | |
344 | conf.if_id = -1; | |
345 | conf.type = IEEE80211_IF_TYPE_MNTR; | |
346 | conf.mac_addr = NULL; | |
347 | local->ops->add_interface(local_to_hw(local), &conf); | |
f0706e82 | 348 | } |
e2ebc74d | 349 | } |
f0706e82 | 350 | |
8a69aa93 DD |
351 | static void ieee80211_if_open(struct net_device *dev) |
352 | { | |
353 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
354 | ||
355 | switch (sdata->type) { | |
356 | case IEEE80211_IF_TYPE_STA: | |
357 | case IEEE80211_IF_TYPE_IBSS: | |
d6f2da5b | 358 | sdata->u.sta.flags &= ~IEEE80211_STA_PREV_BSSID_SET; |
8a69aa93 DD |
359 | break; |
360 | } | |
361 | } | |
362 | ||
b2c258fb | 363 | static int ieee80211_open(struct net_device *dev) |
e2ebc74d | 364 | { |
b2c258fb JB |
365 | struct ieee80211_sub_if_data *sdata, *nsdata; |
366 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
367 | struct ieee80211_if_init_conf conf; | |
368 | int res; | |
f0706e82 | 369 | |
b2c258fb JB |
370 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
371 | read_lock(&local->sub_if_lock); | |
372 | list_for_each_entry(nsdata, &local->sub_if_list, list) { | |
373 | struct net_device *ndev = nsdata->dev; | |
e2ebc74d | 374 | |
b2c258fb JB |
375 | if (ndev != dev && ndev != local->mdev && netif_running(ndev) && |
376 | compare_ether_addr(dev->dev_addr, ndev->dev_addr) == 0 && | |
377 | !identical_mac_addr_allowed(sdata->type, nsdata->type)) { | |
378 | read_unlock(&local->sub_if_lock); | |
379 | return -ENOTUNIQ; | |
380 | } | |
381 | } | |
382 | read_unlock(&local->sub_if_lock); | |
f0706e82 | 383 | |
b2c258fb JB |
384 | if (sdata->type == IEEE80211_IF_TYPE_WDS && |
385 | is_zero_ether_addr(sdata->u.wds.remote_addr)) | |
386 | return -ENOLINK; | |
f0706e82 | 387 | |
b2c258fb JB |
388 | if (sdata->type == IEEE80211_IF_TYPE_MNTR && local->open_count && |
389 | !(local->hw.flags & IEEE80211_HW_MONITOR_DURING_OPER)) { | |
390 | /* run the interface in a "soft monitor" mode */ | |
391 | local->monitors++; | |
392 | local->open_count++; | |
393 | local->hw.conf.flags |= IEEE80211_CONF_RADIOTAP; | |
394 | return 0; | |
395 | } | |
8a69aa93 | 396 | ieee80211_if_open(dev); |
b2c258fb | 397 | ieee80211_start_soft_monitor(local); |
f0706e82 | 398 | |
b2c258fb JB |
399 | conf.if_id = dev->ifindex; |
400 | conf.type = sdata->type; | |
1bec3f1a JB |
401 | if (sdata->type == IEEE80211_IF_TYPE_MNTR) |
402 | conf.mac_addr = NULL; | |
403 | else | |
404 | conf.mac_addr = dev->dev_addr; | |
b2c258fb JB |
405 | res = local->ops->add_interface(local_to_hw(local), &conf); |
406 | if (res) { | |
407 | if (sdata->type == IEEE80211_IF_TYPE_MNTR) | |
408 | ieee80211_start_hard_monitor(local); | |
409 | return res; | |
410 | } | |
f0706e82 | 411 | |
b2c258fb JB |
412 | if (local->open_count == 0) { |
413 | res = 0; | |
414 | tasklet_enable(&local->tx_pending_tasklet); | |
415 | tasklet_enable(&local->tasklet); | |
416 | if (local->ops->open) | |
417 | res = local->ops->open(local_to_hw(local)); | |
418 | if (res == 0) { | |
419 | res = dev_open(local->mdev); | |
420 | if (res) { | |
421 | if (local->ops->stop) | |
422 | local->ops->stop(local_to_hw(local)); | |
423 | } else { | |
424 | res = ieee80211_hw_config(local); | |
425 | if (res && local->ops->stop) | |
426 | local->ops->stop(local_to_hw(local)); | |
427 | else if (!res && local->apdev) | |
428 | dev_open(local->apdev); | |
429 | } | |
430 | } | |
431 | if (res) { | |
432 | if (local->ops->remove_interface) | |
433 | local->ops->remove_interface(local_to_hw(local), | |
434 | &conf); | |
435 | return res; | |
436 | } | |
437 | } | |
438 | local->open_count++; | |
f0706e82 | 439 | |
b2c258fb JB |
440 | if (sdata->type == IEEE80211_IF_TYPE_MNTR) { |
441 | local->monitors++; | |
442 | local->hw.conf.flags |= IEEE80211_CONF_RADIOTAP; | |
d9430a32 | 443 | } else { |
b2c258fb | 444 | ieee80211_if_config(dev); |
d9430a32 | 445 | ieee80211_reset_erp_info(dev); |
11a843b7 | 446 | ieee80211_enable_keys(sdata); |
d9430a32 | 447 | } |
f0706e82 | 448 | |
b2c258fb JB |
449 | if (sdata->type == IEEE80211_IF_TYPE_STA && |
450 | !local->user_space_mlme) | |
451 | netif_carrier_off(dev); | |
452 | else | |
453 | netif_carrier_on(dev); | |
f0706e82 | 454 | |
b2c258fb JB |
455 | netif_start_queue(dev); |
456 | return 0; | |
f0706e82 | 457 | } |
f0706e82 | 458 | |
b2c258fb | 459 | static void ieee80211_if_shutdown(struct net_device *dev) |
f0706e82 | 460 | { |
f0706e82 | 461 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); |
b2c258fb | 462 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
f0706e82 | 463 | |
b2c258fb JB |
464 | ASSERT_RTNL(); |
465 | switch (sdata->type) { | |
466 | case IEEE80211_IF_TYPE_STA: | |
467 | case IEEE80211_IF_TYPE_IBSS: | |
468 | sdata->u.sta.state = IEEE80211_DISABLED; | |
469 | del_timer_sync(&sdata->u.sta.timer); | |
2a8a9a88 JB |
470 | /* |
471 | * Holding the sub_if_lock for writing here blocks | |
472 | * out the receive path and makes sure it's not | |
473 | * currently processing a packet that may get | |
474 | * added to the queue. | |
475 | */ | |
476 | write_lock_bh(&local->sub_if_lock); | |
b2c258fb | 477 | skb_queue_purge(&sdata->u.sta.skb_queue); |
2a8a9a88 JB |
478 | write_unlock_bh(&local->sub_if_lock); |
479 | ||
b2c258fb JB |
480 | if (!local->ops->hw_scan && |
481 | local->scan_dev == sdata->dev) { | |
482 | local->sta_scanning = 0; | |
483 | cancel_delayed_work(&local->scan_work); | |
484 | } | |
485 | flush_workqueue(local->hw.workqueue); | |
486 | break; | |
f0706e82 | 487 | } |
f0706e82 JB |
488 | } |
489 | ||
b2c258fb | 490 | static int ieee80211_stop(struct net_device *dev) |
f0706e82 | 491 | { |
b2c258fb | 492 | struct ieee80211_sub_if_data *sdata; |
f0706e82 | 493 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); |
f0706e82 | 494 | |
b2c258fb | 495 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
f0706e82 | 496 | |
b2c258fb JB |
497 | if (sdata->type == IEEE80211_IF_TYPE_MNTR && |
498 | local->open_count > 1 && | |
499 | !(local->hw.flags & IEEE80211_HW_MONITOR_DURING_OPER)) { | |
500 | /* remove "soft monitor" interface */ | |
501 | local->open_count--; | |
502 | local->monitors--; | |
503 | if (!local->monitors) | |
504 | local->hw.conf.flags &= ~IEEE80211_CONF_RADIOTAP; | |
505 | return 0; | |
f0706e82 JB |
506 | } |
507 | ||
b2c258fb JB |
508 | netif_stop_queue(dev); |
509 | ieee80211_if_shutdown(dev); | |
f0706e82 | 510 | |
b2c258fb JB |
511 | if (sdata->type == IEEE80211_IF_TYPE_MNTR) { |
512 | local->monitors--; | |
513 | if (!local->monitors) | |
514 | local->hw.conf.flags &= ~IEEE80211_CONF_RADIOTAP; | |
11a843b7 JB |
515 | } else { |
516 | /* disable all keys for as long as this netdev is down */ | |
517 | ieee80211_disable_keys(sdata); | |
f0706e82 JB |
518 | } |
519 | ||
b2c258fb JB |
520 | local->open_count--; |
521 | if (local->open_count == 0) { | |
522 | if (netif_running(local->mdev)) | |
523 | dev_close(local->mdev); | |
524 | if (local->apdev) | |
525 | dev_close(local->apdev); | |
526 | if (local->ops->stop) | |
527 | local->ops->stop(local_to_hw(local)); | |
528 | tasklet_disable(&local->tx_pending_tasklet); | |
529 | tasklet_disable(&local->tasklet); | |
530 | } | |
531 | if (local->ops->remove_interface) { | |
532 | struct ieee80211_if_init_conf conf; | |
f0706e82 | 533 | |
b2c258fb JB |
534 | conf.if_id = dev->ifindex; |
535 | conf.type = sdata->type; | |
536 | conf.mac_addr = dev->dev_addr; | |
537 | local->ops->remove_interface(local_to_hw(local), &conf); | |
f0706e82 JB |
538 | } |
539 | ||
b2c258fb JB |
540 | ieee80211_start_hard_monitor(local); |
541 | ||
f0706e82 JB |
542 | return 0; |
543 | } | |
544 | ||
545 | enum netif_tx_lock_class { | |
546 | TX_LOCK_NORMAL, | |
547 | TX_LOCK_MASTER, | |
548 | }; | |
549 | ||
550 | static inline void netif_tx_lock_nested(struct net_device *dev, int subclass) | |
551 | { | |
552 | spin_lock_nested(&dev->_xmit_lock, subclass); | |
553 | dev->xmit_lock_owner = smp_processor_id(); | |
554 | } | |
555 | ||
556 | static void ieee80211_set_multicast_list(struct net_device *dev) | |
557 | { | |
558 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
559 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
560 | unsigned short flags; | |
561 | ||
562 | netif_tx_lock_nested(local->mdev, TX_LOCK_MASTER); | |
13262ffd JS |
563 | if (((dev->flags & IFF_ALLMULTI) != 0) ^ |
564 | ((sdata->flags & IEEE80211_SDATA_ALLMULTI) != 0)) { | |
565 | if (sdata->flags & IEEE80211_SDATA_ALLMULTI) | |
f0706e82 | 566 | local->iff_allmultis--; |
13262ffd | 567 | else |
f0706e82 | 568 | local->iff_allmultis++; |
13262ffd | 569 | sdata->flags ^= IEEE80211_SDATA_ALLMULTI; |
f0706e82 | 570 | } |
13262ffd JS |
571 | if (((dev->flags & IFF_PROMISC) != 0) ^ |
572 | ((sdata->flags & IEEE80211_SDATA_PROMISC) != 0)) { | |
573 | if (sdata->flags & IEEE80211_SDATA_PROMISC) | |
f0706e82 | 574 | local->iff_promiscs--; |
13262ffd | 575 | else |
f0706e82 | 576 | local->iff_promiscs++; |
13262ffd | 577 | sdata->flags ^= IEEE80211_SDATA_PROMISC; |
f0706e82 JB |
578 | } |
579 | if (dev->mc_count != sdata->mc_count) { | |
580 | local->mc_count = local->mc_count - sdata->mc_count + | |
581 | dev->mc_count; | |
582 | sdata->mc_count = dev->mc_count; | |
583 | } | |
584 | if (local->ops->set_multicast_list) { | |
585 | flags = local->mdev->flags; | |
586 | if (local->iff_allmultis) | |
587 | flags |= IFF_ALLMULTI; | |
588 | if (local->iff_promiscs) | |
589 | flags |= IFF_PROMISC; | |
590 | read_lock(&local->sub_if_lock); | |
591 | local->ops->set_multicast_list(local_to_hw(local), flags, | |
592 | local->mc_count); | |
593 | read_unlock(&local->sub_if_lock); | |
594 | } | |
595 | netif_tx_unlock(local->mdev); | |
596 | } | |
597 | ||
b2c258fb JB |
598 | /* Must not be called for mdev and apdev */ |
599 | void ieee80211_if_setup(struct net_device *dev) | |
f0706e82 | 600 | { |
b2c258fb JB |
601 | ether_setup(dev); |
602 | dev->hard_start_xmit = ieee80211_subif_start_xmit; | |
603 | dev->wireless_handlers = &ieee80211_iw_handler_def; | |
604 | dev->set_multicast_list = ieee80211_set_multicast_list; | |
605 | dev->change_mtu = ieee80211_change_mtu; | |
606 | dev->get_stats = ieee80211_get_stats; | |
607 | dev->open = ieee80211_open; | |
608 | dev->stop = ieee80211_stop; | |
609 | dev->uninit = ieee80211_if_reinit; | |
610 | dev->destructor = ieee80211_if_free; | |
611 | } | |
f0706e82 | 612 | |
b2c258fb JB |
613 | /* WDS specialties */ |
614 | ||
615 | int ieee80211_if_update_wds(struct net_device *dev, u8 *remote_addr) | |
616 | { | |
617 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
618 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
619 | struct sta_info *sta; | |
620 | ||
621 | if (compare_ether_addr(remote_addr, sdata->u.wds.remote_addr) == 0) | |
622 | return 0; | |
623 | ||
624 | /* Create STA entry for the new peer */ | |
625 | sta = sta_info_add(local, dev, remote_addr, GFP_KERNEL); | |
626 | if (!sta) | |
627 | return -ENOMEM; | |
628 | sta_info_put(sta); | |
629 | ||
630 | /* Remove STA entry for the old peer */ | |
631 | sta = sta_info_get(local, sdata->u.wds.remote_addr); | |
632 | if (sta) { | |
be8755e1 | 633 | sta_info_free(sta); |
b2c258fb | 634 | sta_info_put(sta); |
b2c258fb JB |
635 | } else { |
636 | printk(KERN_DEBUG "%s: could not find STA entry for WDS link " | |
637 | "peer " MAC_FMT "\n", | |
638 | dev->name, MAC_ARG(sdata->u.wds.remote_addr)); | |
639 | } | |
640 | ||
641 | /* Update WDS link data */ | |
642 | memcpy(&sdata->u.wds.remote_addr, remote_addr, ETH_ALEN); | |
643 | ||
644 | return 0; | |
f0706e82 | 645 | } |
f0706e82 | 646 | |
b2c258fb JB |
647 | /* everything else */ |
648 | ||
b2c258fb JB |
649 | static int __ieee80211_if_config(struct net_device *dev, |
650 | struct sk_buff *beacon, | |
651 | struct ieee80211_tx_control *control) | |
652 | { | |
653 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
654 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
655 | struct ieee80211_if_conf conf; | |
656 | static u8 scan_bssid[] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; | |
657 | ||
658 | if (!local->ops->config_interface || !netif_running(dev)) | |
f0706e82 | 659 | return 0; |
f0706e82 | 660 | |
b2c258fb | 661 | memset(&conf, 0, sizeof(conf)); |
4480f15c | 662 | conf.type = sdata->type; |
b2c258fb JB |
663 | if (sdata->type == IEEE80211_IF_TYPE_STA || |
664 | sdata->type == IEEE80211_IF_TYPE_IBSS) { | |
665 | if (local->sta_scanning && | |
666 | local->scan_dev == dev) | |
667 | conf.bssid = scan_bssid; | |
668 | else | |
669 | conf.bssid = sdata->u.sta.bssid; | |
670 | conf.ssid = sdata->u.sta.ssid; | |
671 | conf.ssid_len = sdata->u.sta.ssid_len; | |
672 | conf.generic_elem = sdata->u.sta.extra_ie; | |
673 | conf.generic_elem_len = sdata->u.sta.extra_ie_len; | |
674 | } else if (sdata->type == IEEE80211_IF_TYPE_AP) { | |
675 | conf.ssid = sdata->u.ap.ssid; | |
676 | conf.ssid_len = sdata->u.ap.ssid_len; | |
677 | conf.generic_elem = sdata->u.ap.generic_elem; | |
678 | conf.generic_elem_len = sdata->u.ap.generic_elem_len; | |
679 | conf.beacon = beacon; | |
680 | conf.beacon_control = control; | |
f0706e82 | 681 | } |
b2c258fb JB |
682 | return local->ops->config_interface(local_to_hw(local), |
683 | dev->ifindex, &conf); | |
f0706e82 JB |
684 | } |
685 | ||
b2c258fb JB |
686 | int ieee80211_if_config(struct net_device *dev) |
687 | { | |
688 | return __ieee80211_if_config(dev, NULL, NULL); | |
689 | } | |
f0706e82 | 690 | |
b2c258fb | 691 | int ieee80211_if_config_beacon(struct net_device *dev) |
f0706e82 | 692 | { |
f0706e82 | 693 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); |
b2c258fb JB |
694 | struct ieee80211_tx_control control; |
695 | struct sk_buff *skb; | |
f0706e82 | 696 | |
b2c258fb | 697 | if (!(local->hw.flags & IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE)) |
f0706e82 | 698 | return 0; |
b2c258fb JB |
699 | skb = ieee80211_beacon_get(local_to_hw(local), dev->ifindex, &control); |
700 | if (!skb) | |
701 | return -ENOMEM; | |
702 | return __ieee80211_if_config(dev, skb, &control); | |
703 | } | |
f0706e82 | 704 | |
b2c258fb JB |
705 | int ieee80211_hw_config(struct ieee80211_local *local) |
706 | { | |
707 | struct ieee80211_hw_mode *mode; | |
708 | struct ieee80211_channel *chan; | |
709 | int ret = 0; | |
f0706e82 | 710 | |
b2c258fb JB |
711 | if (local->sta_scanning) { |
712 | chan = local->scan_channel; | |
713 | mode = local->scan_hw_mode; | |
714 | } else { | |
715 | chan = local->oper_channel; | |
716 | mode = local->oper_hw_mode; | |
f0706e82 JB |
717 | } |
718 | ||
b2c258fb JB |
719 | local->hw.conf.channel = chan->chan; |
720 | local->hw.conf.channel_val = chan->val; | |
721 | local->hw.conf.power_level = chan->power_level; | |
722 | local->hw.conf.freq = chan->freq; | |
723 | local->hw.conf.phymode = mode->mode; | |
724 | local->hw.conf.antenna_max = chan->antenna_max; | |
725 | local->hw.conf.chan = chan; | |
726 | local->hw.conf.mode = mode; | |
f0706e82 | 727 | |
b2c258fb JB |
728 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
729 | printk(KERN_DEBUG "HW CONFIG: channel=%d freq=%d " | |
730 | "phymode=%d\n", local->hw.conf.channel, local->hw.conf.freq, | |
731 | local->hw.conf.phymode); | |
732 | #endif /* CONFIG_MAC80211_VERBOSE_DEBUG */ | |
733 | ||
734 | if (local->ops->config) | |
735 | ret = local->ops->config(local_to_hw(local), &local->hw.conf); | |
f0706e82 | 736 | |
b2c258fb JB |
737 | return ret; |
738 | } | |
f0706e82 | 739 | |
d9430a32 DD |
740 | void ieee80211_erp_info_change_notify(struct net_device *dev, u8 changes) |
741 | { | |
742 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
743 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
744 | if (local->ops->erp_ie_changed) | |
745 | local->ops->erp_ie_changed(local_to_hw(local), changes, | |
13262ffd JS |
746 | !!(sdata->flags & IEEE80211_SDATA_USE_PROTECTION), |
747 | !(sdata->flags & IEEE80211_SDATA_SHORT_PREAMBLE)); | |
d9430a32 DD |
748 | } |
749 | ||
750 | void ieee80211_reset_erp_info(struct net_device *dev) | |
751 | { | |
752 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
753 | ||
13262ffd JS |
754 | sdata->flags &= ~(IEEE80211_SDATA_USE_PROTECTION | |
755 | IEEE80211_SDATA_SHORT_PREAMBLE); | |
d9430a32 DD |
756 | ieee80211_erp_info_change_notify(dev, |
757 | IEEE80211_ERP_CHANGE_PROTECTION | | |
758 | IEEE80211_ERP_CHANGE_PREAMBLE); | |
759 | } | |
760 | ||
b2c258fb JB |
761 | struct dev_mc_list *ieee80211_get_mc_list_item(struct ieee80211_hw *hw, |
762 | struct dev_mc_list *prev, | |
763 | void **ptr) | |
f0706e82 | 764 | { |
b2c258fb JB |
765 | struct ieee80211_local *local = hw_to_local(hw); |
766 | struct ieee80211_sub_if_data *sdata = *ptr; | |
767 | struct dev_mc_list *mc; | |
768 | ||
769 | if (!prev) { | |
770 | WARN_ON(sdata); | |
771 | sdata = NULL; | |
772 | } | |
773 | if (!prev || !prev->next) { | |
774 | if (sdata) | |
775 | sdata = list_entry(sdata->list.next, | |
776 | struct ieee80211_sub_if_data, list); | |
777 | else | |
778 | sdata = list_entry(local->sub_if_list.next, | |
779 | struct ieee80211_sub_if_data, list); | |
780 | if (&sdata->list != &local->sub_if_list) | |
781 | mc = sdata->dev->mc_list; | |
782 | else | |
783 | mc = NULL; | |
784 | } else | |
785 | mc = prev->next; | |
786 | ||
787 | *ptr = sdata; | |
788 | return mc; | |
f0706e82 | 789 | } |
b2c258fb | 790 | EXPORT_SYMBOL(ieee80211_get_mc_list_item); |
f0706e82 | 791 | |
f0706e82 JB |
792 | void ieee80211_tx_status_irqsafe(struct ieee80211_hw *hw, |
793 | struct sk_buff *skb, | |
794 | struct ieee80211_tx_status *status) | |
795 | { | |
796 | struct ieee80211_local *local = hw_to_local(hw); | |
797 | struct ieee80211_tx_status *saved; | |
798 | int tmp; | |
799 | ||
800 | skb->dev = local->mdev; | |
801 | saved = kmalloc(sizeof(struct ieee80211_tx_status), GFP_ATOMIC); | |
802 | if (unlikely(!saved)) { | |
803 | if (net_ratelimit()) | |
804 | printk(KERN_WARNING "%s: Not enough memory, " | |
805 | "dropping tx status", skb->dev->name); | |
806 | /* should be dev_kfree_skb_irq, but due to this function being | |
807 | * named _irqsafe instead of just _irq we can't be sure that | |
808 | * people won't call it from non-irq contexts */ | |
809 | dev_kfree_skb_any(skb); | |
810 | return; | |
811 | } | |
812 | memcpy(saved, status, sizeof(struct ieee80211_tx_status)); | |
813 | /* copy pointer to saved status into skb->cb for use by tasklet */ | |
814 | memcpy(skb->cb, &saved, sizeof(saved)); | |
815 | ||
816 | skb->pkt_type = IEEE80211_TX_STATUS_MSG; | |
817 | skb_queue_tail(status->control.flags & IEEE80211_TXCTL_REQ_TX_STATUS ? | |
818 | &local->skb_queue : &local->skb_queue_unreliable, skb); | |
819 | tmp = skb_queue_len(&local->skb_queue) + | |
820 | skb_queue_len(&local->skb_queue_unreliable); | |
821 | while (tmp > IEEE80211_IRQSAFE_QUEUE_LIMIT && | |
822 | (skb = skb_dequeue(&local->skb_queue_unreliable))) { | |
823 | memcpy(&saved, skb->cb, sizeof(saved)); | |
824 | kfree(saved); | |
825 | dev_kfree_skb_irq(skb); | |
826 | tmp--; | |
827 | I802_DEBUG_INC(local->tx_status_drop); | |
828 | } | |
829 | tasklet_schedule(&local->tasklet); | |
830 | } | |
831 | EXPORT_SYMBOL(ieee80211_tx_status_irqsafe); | |
832 | ||
833 | static void ieee80211_tasklet_handler(unsigned long data) | |
834 | { | |
835 | struct ieee80211_local *local = (struct ieee80211_local *) data; | |
836 | struct sk_buff *skb; | |
837 | struct ieee80211_rx_status rx_status; | |
838 | struct ieee80211_tx_status *tx_status; | |
839 | ||
840 | while ((skb = skb_dequeue(&local->skb_queue)) || | |
841 | (skb = skb_dequeue(&local->skb_queue_unreliable))) { | |
842 | switch (skb->pkt_type) { | |
843 | case IEEE80211_RX_MSG: | |
844 | /* status is in skb->cb */ | |
845 | memcpy(&rx_status, skb->cb, sizeof(rx_status)); | |
846 | /* Clear skb->type in order to not confuse kernel | |
847 | * netstack. */ | |
848 | skb->pkt_type = 0; | |
849 | __ieee80211_rx(local_to_hw(local), skb, &rx_status); | |
850 | break; | |
851 | case IEEE80211_TX_STATUS_MSG: | |
852 | /* get pointer to saved status out of skb->cb */ | |
853 | memcpy(&tx_status, skb->cb, sizeof(tx_status)); | |
854 | skb->pkt_type = 0; | |
855 | ieee80211_tx_status(local_to_hw(local), | |
856 | skb, tx_status); | |
857 | kfree(tx_status); | |
858 | break; | |
859 | default: /* should never get here! */ | |
860 | printk(KERN_ERR "%s: Unknown message type (%d)\n", | |
861 | local->mdev->name, skb->pkt_type); | |
862 | dev_kfree_skb(skb); | |
863 | break; | |
864 | } | |
865 | } | |
866 | } | |
867 | ||
f0706e82 JB |
868 | /* Remove added headers (e.g., QoS control), encryption header/MIC, etc. to |
869 | * make a prepared TX frame (one that has been given to hw) to look like brand | |
870 | * new IEEE 802.11 frame that is ready to go through TX processing again. | |
871 | * Also, tx_packet_data in cb is restored from tx_control. */ | |
872 | static void ieee80211_remove_tx_extra(struct ieee80211_local *local, | |
873 | struct ieee80211_key *key, | |
874 | struct sk_buff *skb, | |
875 | struct ieee80211_tx_control *control) | |
876 | { | |
877 | int hdrlen, iv_len, mic_len; | |
878 | struct ieee80211_tx_packet_data *pkt_data; | |
879 | ||
880 | pkt_data = (struct ieee80211_tx_packet_data *)skb->cb; | |
881 | pkt_data->ifindex = control->ifindex; | |
e8bf9649 JS |
882 | pkt_data->flags = 0; |
883 | if (control->flags & IEEE80211_TXCTL_REQ_TX_STATUS) | |
884 | pkt_data->flags |= IEEE80211_TXPD_REQ_TX_STATUS; | |
885 | if (control->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT) | |
886 | pkt_data->flags |= IEEE80211_TXPD_DO_NOT_ENCRYPT; | |
887 | if (control->flags & IEEE80211_TXCTL_REQUEUE) | |
888 | pkt_data->flags |= IEEE80211_TXPD_REQUEUE; | |
889 | if (control->type == IEEE80211_IF_TYPE_MGMT) | |
890 | pkt_data->flags |= IEEE80211_TXPD_MGMT_IFACE; | |
f0706e82 JB |
891 | pkt_data->queue = control->queue; |
892 | ||
893 | hdrlen = ieee80211_get_hdrlen_from_skb(skb); | |
894 | ||
895 | if (!key) | |
896 | goto no_key; | |
897 | ||
8f20fc24 | 898 | switch (key->conf.alg) { |
f0706e82 JB |
899 | case ALG_WEP: |
900 | iv_len = WEP_IV_LEN; | |
901 | mic_len = WEP_ICV_LEN; | |
902 | break; | |
903 | case ALG_TKIP: | |
904 | iv_len = TKIP_IV_LEN; | |
905 | mic_len = TKIP_ICV_LEN; | |
906 | break; | |
907 | case ALG_CCMP: | |
908 | iv_len = CCMP_HDR_LEN; | |
909 | mic_len = CCMP_MIC_LEN; | |
910 | break; | |
911 | default: | |
912 | goto no_key; | |
913 | } | |
914 | ||
8f20fc24 | 915 | if (skb->len >= mic_len && |
11a843b7 | 916 | !(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)) |
f0706e82 JB |
917 | skb_trim(skb, skb->len - mic_len); |
918 | if (skb->len >= iv_len && skb->len > hdrlen) { | |
919 | memmove(skb->data + iv_len, skb->data, hdrlen); | |
920 | skb_pull(skb, iv_len); | |
921 | } | |
922 | ||
923 | no_key: | |
924 | { | |
925 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; | |
926 | u16 fc = le16_to_cpu(hdr->frame_control); | |
927 | if ((fc & 0x8C) == 0x88) /* QoS Control Field */ { | |
928 | fc &= ~IEEE80211_STYPE_QOS_DATA; | |
929 | hdr->frame_control = cpu_to_le16(fc); | |
930 | memmove(skb->data + 2, skb->data, hdrlen - 2); | |
931 | skb_pull(skb, 2); | |
932 | } | |
933 | } | |
934 | } | |
935 | ||
f0706e82 JB |
936 | void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb, |
937 | struct ieee80211_tx_status *status) | |
938 | { | |
939 | struct sk_buff *skb2; | |
940 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; | |
941 | struct ieee80211_local *local = hw_to_local(hw); | |
942 | u16 frag, type; | |
943 | u32 msg_type; | |
b306f453 JB |
944 | struct ieee80211_tx_status_rtap_hdr *rthdr; |
945 | struct ieee80211_sub_if_data *sdata; | |
946 | int monitors; | |
f0706e82 JB |
947 | |
948 | if (!status) { | |
949 | printk(KERN_ERR | |
950 | "%s: ieee80211_tx_status called with NULL status\n", | |
951 | local->mdev->name); | |
952 | dev_kfree_skb(skb); | |
953 | return; | |
954 | } | |
955 | ||
956 | if (status->excessive_retries) { | |
957 | struct sta_info *sta; | |
958 | sta = sta_info_get(local, hdr->addr1); | |
959 | if (sta) { | |
960 | if (sta->flags & WLAN_STA_PS) { | |
961 | /* The STA is in power save mode, so assume | |
962 | * that this TX packet failed because of that. | |
963 | */ | |
964 | status->excessive_retries = 0; | |
965 | status->flags |= IEEE80211_TX_STATUS_TX_FILTERED; | |
966 | } | |
967 | sta_info_put(sta); | |
968 | } | |
969 | } | |
970 | ||
971 | if (status->flags & IEEE80211_TX_STATUS_TX_FILTERED) { | |
972 | struct sta_info *sta; | |
973 | sta = sta_info_get(local, hdr->addr1); | |
974 | if (sta) { | |
975 | sta->tx_filtered_count++; | |
976 | ||
977 | /* Clear the TX filter mask for this STA when sending | |
978 | * the next packet. If the STA went to power save mode, | |
979 | * this will happen when it is waking up for the next | |
980 | * time. */ | |
981 | sta->clear_dst_mask = 1; | |
982 | ||
983 | /* TODO: Is the WLAN_STA_PS flag always set here or is | |
984 | * the race between RX and TX status causing some | |
985 | * packets to be filtered out before 80211.o gets an | |
986 | * update for PS status? This seems to be the case, so | |
987 | * no changes are likely to be needed. */ | |
988 | if (sta->flags & WLAN_STA_PS && | |
989 | skb_queue_len(&sta->tx_filtered) < | |
990 | STA_MAX_TX_BUFFER) { | |
991 | ieee80211_remove_tx_extra(local, sta->key, | |
992 | skb, | |
993 | &status->control); | |
994 | skb_queue_tail(&sta->tx_filtered, skb); | |
995 | } else if (!(sta->flags & WLAN_STA_PS) && | |
996 | !(status->control.flags & IEEE80211_TXCTL_REQUEUE)) { | |
997 | /* Software retry the packet once */ | |
998 | status->control.flags |= IEEE80211_TXCTL_REQUEUE; | |
999 | ieee80211_remove_tx_extra(local, sta->key, | |
1000 | skb, | |
1001 | &status->control); | |
1002 | dev_queue_xmit(skb); | |
1003 | } else { | |
1004 | if (net_ratelimit()) { | |
1005 | printk(KERN_DEBUG "%s: dropped TX " | |
1006 | "filtered frame queue_len=%d " | |
1007 | "PS=%d @%lu\n", | |
1008 | local->mdev->name, | |
1009 | skb_queue_len( | |
1010 | &sta->tx_filtered), | |
1011 | !!(sta->flags & WLAN_STA_PS), | |
1012 | jiffies); | |
1013 | } | |
1014 | dev_kfree_skb(skb); | |
1015 | } | |
1016 | sta_info_put(sta); | |
1017 | return; | |
1018 | } | |
1019 | } else { | |
1020 | /* FIXME: STUPID to call this with both local and local->mdev */ | |
1021 | rate_control_tx_status(local, local->mdev, skb, status); | |
1022 | } | |
1023 | ||
1024 | ieee80211_led_tx(local, 0); | |
1025 | ||
1026 | /* SNMP counters | |
1027 | * Fragments are passed to low-level drivers as separate skbs, so these | |
1028 | * are actually fragments, not frames. Update frame counters only for | |
1029 | * the first fragment of the frame. */ | |
1030 | ||
1031 | frag = le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_FRAG; | |
1032 | type = le16_to_cpu(hdr->frame_control) & IEEE80211_FCTL_FTYPE; | |
1033 | ||
1034 | if (status->flags & IEEE80211_TX_STATUS_ACK) { | |
1035 | if (frag == 0) { | |
1036 | local->dot11TransmittedFrameCount++; | |
1037 | if (is_multicast_ether_addr(hdr->addr1)) | |
1038 | local->dot11MulticastTransmittedFrameCount++; | |
1039 | if (status->retry_count > 0) | |
1040 | local->dot11RetryCount++; | |
1041 | if (status->retry_count > 1) | |
1042 | local->dot11MultipleRetryCount++; | |
1043 | } | |
1044 | ||
1045 | /* This counter shall be incremented for an acknowledged MPDU | |
1046 | * with an individual address in the address 1 field or an MPDU | |
1047 | * with a multicast address in the address 1 field of type Data | |
1048 | * or Management. */ | |
1049 | if (!is_multicast_ether_addr(hdr->addr1) || | |
1050 | type == IEEE80211_FTYPE_DATA || | |
1051 | type == IEEE80211_FTYPE_MGMT) | |
1052 | local->dot11TransmittedFragmentCount++; | |
1053 | } else { | |
1054 | if (frag == 0) | |
1055 | local->dot11FailedCount++; | |
1056 | } | |
1057 | ||
b306f453 JB |
1058 | msg_type = (status->flags & IEEE80211_TX_STATUS_ACK) ? |
1059 | ieee80211_msg_tx_callback_ack : ieee80211_msg_tx_callback_fail; | |
1060 | ||
1061 | /* this was a transmitted frame, but now we want to reuse it */ | |
1062 | skb_orphan(skb); | |
1063 | ||
1064 | if ((status->control.flags & IEEE80211_TXCTL_REQ_TX_STATUS) && | |
1065 | local->apdev) { | |
1066 | if (local->monitors) { | |
1067 | skb2 = skb_clone(skb, GFP_ATOMIC); | |
1068 | } else { | |
1069 | skb2 = skb; | |
1070 | skb = NULL; | |
1071 | } | |
1072 | ||
1073 | if (skb2) | |
1074 | /* Send frame to hostapd */ | |
1075 | ieee80211_rx_mgmt(local, skb2, NULL, msg_type); | |
1076 | ||
1077 | if (!skb) | |
1078 | return; | |
1079 | } | |
1080 | ||
1081 | if (!local->monitors) { | |
f0706e82 JB |
1082 | dev_kfree_skb(skb); |
1083 | return; | |
1084 | } | |
1085 | ||
b306f453 | 1086 | /* send frame to monitor interfaces now */ |
f0706e82 | 1087 | |
b306f453 JB |
1088 | if (skb_headroom(skb) < sizeof(*rthdr)) { |
1089 | printk(KERN_ERR "ieee80211_tx_status: headroom too small\n"); | |
f0706e82 JB |
1090 | dev_kfree_skb(skb); |
1091 | return; | |
1092 | } | |
f0706e82 | 1093 | |
b306f453 JB |
1094 | rthdr = (struct ieee80211_tx_status_rtap_hdr*) |
1095 | skb_push(skb, sizeof(*rthdr)); | |
1096 | ||
1097 | memset(rthdr, 0, sizeof(*rthdr)); | |
1098 | rthdr->hdr.it_len = cpu_to_le16(sizeof(*rthdr)); | |
1099 | rthdr->hdr.it_present = | |
1100 | cpu_to_le32((1 << IEEE80211_RADIOTAP_TX_FLAGS) | | |
1101 | (1 << IEEE80211_RADIOTAP_DATA_RETRIES)); | |
1102 | ||
1103 | if (!(status->flags & IEEE80211_TX_STATUS_ACK) && | |
1104 | !is_multicast_ether_addr(hdr->addr1)) | |
1105 | rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_FAIL); | |
1106 | ||
1107 | if ((status->control.flags & IEEE80211_TXCTL_USE_RTS_CTS) && | |
1108 | (status->control.flags & IEEE80211_TXCTL_USE_CTS_PROTECT)) | |
1109 | rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_CTS); | |
1110 | else if (status->control.flags & IEEE80211_TXCTL_USE_RTS_CTS) | |
1111 | rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_RTS); | |
1112 | ||
1113 | rthdr->data_retries = status->retry_count; | |
1114 | ||
1115 | read_lock(&local->sub_if_lock); | |
1116 | monitors = local->monitors; | |
1117 | list_for_each_entry(sdata, &local->sub_if_list, list) { | |
1118 | /* | |
1119 | * Using the monitors counter is possibly racy, but | |
1120 | * if the value is wrong we simply either clone the skb | |
1121 | * once too much or forget sending it to one monitor iface | |
1122 | * The latter case isn't nice but fixing the race is much | |
1123 | * more complicated. | |
1124 | */ | |
1125 | if (!monitors || !skb) | |
1126 | goto out; | |
1127 | ||
1128 | if (sdata->type == IEEE80211_IF_TYPE_MNTR) { | |
1129 | if (!netif_running(sdata->dev)) | |
1130 | continue; | |
1131 | monitors--; | |
1132 | if (monitors) | |
1133 | skb2 = skb_clone(skb, GFP_KERNEL); | |
1134 | else | |
1135 | skb2 = NULL; | |
1136 | skb->dev = sdata->dev; | |
1137 | /* XXX: is this sufficient for BPF? */ | |
1138 | skb_set_mac_header(skb, 0); | |
1139 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
1140 | skb->pkt_type = PACKET_OTHERHOST; | |
1141 | skb->protocol = htons(ETH_P_802_2); | |
1142 | memset(skb->cb, 0, sizeof(skb->cb)); | |
1143 | netif_rx(skb); | |
1144 | skb = skb2; | |
b306f453 JB |
1145 | } |
1146 | } | |
1147 | out: | |
1148 | read_unlock(&local->sub_if_lock); | |
1149 | if (skb) | |
1150 | dev_kfree_skb(skb); | |
f0706e82 JB |
1151 | } |
1152 | EXPORT_SYMBOL(ieee80211_tx_status); | |
1153 | ||
f0706e82 JB |
1154 | struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len, |
1155 | const struct ieee80211_ops *ops) | |
1156 | { | |
1157 | struct net_device *mdev; | |
1158 | struct ieee80211_local *local; | |
1159 | struct ieee80211_sub_if_data *sdata; | |
1160 | int priv_size; | |
1161 | struct wiphy *wiphy; | |
1162 | ||
1163 | /* Ensure 32-byte alignment of our private data and hw private data. | |
1164 | * We use the wiphy priv data for both our ieee80211_local and for | |
1165 | * the driver's private data | |
1166 | * | |
1167 | * In memory it'll be like this: | |
1168 | * | |
1169 | * +-------------------------+ | |
1170 | * | struct wiphy | | |
1171 | * +-------------------------+ | |
1172 | * | struct ieee80211_local | | |
1173 | * +-------------------------+ | |
1174 | * | driver's private data | | |
1175 | * +-------------------------+ | |
1176 | * | |
1177 | */ | |
1178 | priv_size = ((sizeof(struct ieee80211_local) + | |
1179 | NETDEV_ALIGN_CONST) & ~NETDEV_ALIGN_CONST) + | |
1180 | priv_data_len; | |
1181 | ||
1182 | wiphy = wiphy_new(&mac80211_config_ops, priv_size); | |
1183 | ||
1184 | if (!wiphy) | |
1185 | return NULL; | |
1186 | ||
1187 | wiphy->privid = mac80211_wiphy_privid; | |
1188 | ||
1189 | local = wiphy_priv(wiphy); | |
1190 | local->hw.wiphy = wiphy; | |
1191 | ||
1192 | local->hw.priv = (char *)local + | |
1193 | ((sizeof(struct ieee80211_local) + | |
1194 | NETDEV_ALIGN_CONST) & ~NETDEV_ALIGN_CONST); | |
1195 | ||
4480f15c JB |
1196 | BUG_ON(!ops->tx); |
1197 | BUG_ON(!ops->config); | |
1198 | BUG_ON(!ops->add_interface); | |
f0706e82 JB |
1199 | local->ops = ops; |
1200 | ||
1201 | /* for now, mdev needs sub_if_data :/ */ | |
1202 | mdev = alloc_netdev(sizeof(struct ieee80211_sub_if_data), | |
1203 | "wmaster%d", ether_setup); | |
1204 | if (!mdev) { | |
1205 | wiphy_free(wiphy); | |
1206 | return NULL; | |
1207 | } | |
1208 | ||
1209 | sdata = IEEE80211_DEV_TO_SUB_IF(mdev); | |
1210 | mdev->ieee80211_ptr = &sdata->wdev; | |
1211 | sdata->wdev.wiphy = wiphy; | |
1212 | ||
1213 | local->hw.queues = 1; /* default */ | |
1214 | ||
1215 | local->mdev = mdev; | |
1216 | local->rx_pre_handlers = ieee80211_rx_pre_handlers; | |
1217 | local->rx_handlers = ieee80211_rx_handlers; | |
1218 | local->tx_handlers = ieee80211_tx_handlers; | |
1219 | ||
1220 | local->bridge_packets = 1; | |
1221 | ||
1222 | local->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD; | |
1223 | local->fragmentation_threshold = IEEE80211_MAX_FRAG_THRESHOLD; | |
1224 | local->short_retry_limit = 7; | |
1225 | local->long_retry_limit = 4; | |
1226 | local->hw.conf.radio_enabled = 1; | |
f0706e82 JB |
1227 | |
1228 | local->enabled_modes = (unsigned int) -1; | |
1229 | ||
1230 | INIT_LIST_HEAD(&local->modes_list); | |
1231 | ||
1232 | rwlock_init(&local->sub_if_lock); | |
1233 | INIT_LIST_HEAD(&local->sub_if_list); | |
1234 | ||
1235 | INIT_DELAYED_WORK(&local->scan_work, ieee80211_sta_scan_work); | |
f0706e82 JB |
1236 | ieee80211_rx_bss_list_init(mdev); |
1237 | ||
1238 | sta_info_init(local); | |
1239 | ||
1240 | mdev->hard_start_xmit = ieee80211_master_start_xmit; | |
1241 | mdev->open = ieee80211_master_open; | |
1242 | mdev->stop = ieee80211_master_stop; | |
1243 | mdev->type = ARPHRD_IEEE80211; | |
1244 | mdev->hard_header_parse = header_parse_80211; | |
1245 | ||
1246 | sdata->type = IEEE80211_IF_TYPE_AP; | |
1247 | sdata->dev = mdev; | |
1248 | sdata->local = local; | |
1249 | sdata->u.ap.force_unicast_rateidx = -1; | |
1250 | sdata->u.ap.max_ratectrl_rateidx = -1; | |
1251 | ieee80211_if_sdata_init(sdata); | |
1252 | list_add_tail(&sdata->list, &local->sub_if_list); | |
1253 | ||
1254 | tasklet_init(&local->tx_pending_tasklet, ieee80211_tx_pending, | |
1255 | (unsigned long)local); | |
1256 | tasklet_disable(&local->tx_pending_tasklet); | |
1257 | ||
1258 | tasklet_init(&local->tasklet, | |
1259 | ieee80211_tasklet_handler, | |
1260 | (unsigned long) local); | |
1261 | tasklet_disable(&local->tasklet); | |
1262 | ||
1263 | skb_queue_head_init(&local->skb_queue); | |
1264 | skb_queue_head_init(&local->skb_queue_unreliable); | |
1265 | ||
1266 | return local_to_hw(local); | |
1267 | } | |
1268 | EXPORT_SYMBOL(ieee80211_alloc_hw); | |
1269 | ||
1270 | int ieee80211_register_hw(struct ieee80211_hw *hw) | |
1271 | { | |
1272 | struct ieee80211_local *local = hw_to_local(hw); | |
1273 | const char *name; | |
1274 | int result; | |
1275 | ||
1276 | result = wiphy_register(local->hw.wiphy); | |
1277 | if (result < 0) | |
1278 | return result; | |
1279 | ||
1280 | name = wiphy_dev(local->hw.wiphy)->driver->name; | |
1281 | local->hw.workqueue = create_singlethread_workqueue(name); | |
1282 | if (!local->hw.workqueue) { | |
1283 | result = -ENOMEM; | |
1284 | goto fail_workqueue; | |
1285 | } | |
1286 | ||
b306f453 JB |
1287 | /* |
1288 | * The hardware needs headroom for sending the frame, | |
1289 | * and we need some headroom for passing the frame to monitor | |
1290 | * interfaces, but never both at the same time. | |
1291 | */ | |
33ccad35 JB |
1292 | local->tx_headroom = max_t(unsigned int , local->hw.extra_tx_headroom, |
1293 | sizeof(struct ieee80211_tx_status_rtap_hdr)); | |
b306f453 | 1294 | |
e9f207f0 JB |
1295 | debugfs_hw_add(local); |
1296 | ||
f0706e82 JB |
1297 | local->hw.conf.beacon_int = 1000; |
1298 | ||
1299 | local->wstats_flags |= local->hw.max_rssi ? | |
1300 | IW_QUAL_LEVEL_UPDATED : IW_QUAL_LEVEL_INVALID; | |
1301 | local->wstats_flags |= local->hw.max_signal ? | |
1302 | IW_QUAL_QUAL_UPDATED : IW_QUAL_QUAL_INVALID; | |
1303 | local->wstats_flags |= local->hw.max_noise ? | |
1304 | IW_QUAL_NOISE_UPDATED : IW_QUAL_NOISE_INVALID; | |
1305 | if (local->hw.max_rssi < 0 || local->hw.max_noise < 0) | |
1306 | local->wstats_flags |= IW_QUAL_DBM; | |
1307 | ||
1308 | result = sta_info_start(local); | |
1309 | if (result < 0) | |
1310 | goto fail_sta_info; | |
1311 | ||
1312 | rtnl_lock(); | |
1313 | result = dev_alloc_name(local->mdev, local->mdev->name); | |
1314 | if (result < 0) | |
1315 | goto fail_dev; | |
1316 | ||
1317 | memcpy(local->mdev->dev_addr, local->hw.wiphy->perm_addr, ETH_ALEN); | |
1318 | SET_NETDEV_DEV(local->mdev, wiphy_dev(local->hw.wiphy)); | |
1319 | ||
1320 | result = register_netdevice(local->mdev); | |
1321 | if (result < 0) | |
1322 | goto fail_dev; | |
1323 | ||
e9f207f0 JB |
1324 | ieee80211_debugfs_add_netdev(IEEE80211_DEV_TO_SUB_IF(local->mdev)); |
1325 | ||
f0706e82 JB |
1326 | result = ieee80211_init_rate_ctrl_alg(local, NULL); |
1327 | if (result < 0) { | |
1328 | printk(KERN_DEBUG "%s: Failed to initialize rate control " | |
1329 | "algorithm\n", local->mdev->name); | |
1330 | goto fail_rate; | |
1331 | } | |
1332 | ||
1333 | result = ieee80211_wep_init(local); | |
1334 | ||
1335 | if (result < 0) { | |
1336 | printk(KERN_DEBUG "%s: Failed to initialize wep\n", | |
1337 | local->mdev->name); | |
1338 | goto fail_wep; | |
1339 | } | |
1340 | ||
1341 | ieee80211_install_qdisc(local->mdev); | |
1342 | ||
1343 | /* add one default STA interface */ | |
1344 | result = ieee80211_if_add(local->mdev, "wlan%d", NULL, | |
1345 | IEEE80211_IF_TYPE_STA); | |
1346 | if (result) | |
1347 | printk(KERN_WARNING "%s: Failed to add default virtual iface\n", | |
1348 | local->mdev->name); | |
1349 | ||
1350 | local->reg_state = IEEE80211_DEV_REGISTERED; | |
1351 | rtnl_unlock(); | |
1352 | ||
1353 | ieee80211_led_init(local); | |
1354 | ||
1355 | return 0; | |
1356 | ||
1357 | fail_wep: | |
1358 | rate_control_deinitialize(local); | |
1359 | fail_rate: | |
e9f207f0 | 1360 | ieee80211_debugfs_remove_netdev(IEEE80211_DEV_TO_SUB_IF(local->mdev)); |
f0706e82 JB |
1361 | unregister_netdevice(local->mdev); |
1362 | fail_dev: | |
1363 | rtnl_unlock(); | |
1364 | sta_info_stop(local); | |
1365 | fail_sta_info: | |
e9f207f0 | 1366 | debugfs_hw_del(local); |
f0706e82 JB |
1367 | destroy_workqueue(local->hw.workqueue); |
1368 | fail_workqueue: | |
1369 | wiphy_unregister(local->hw.wiphy); | |
1370 | return result; | |
1371 | } | |
1372 | EXPORT_SYMBOL(ieee80211_register_hw); | |
1373 | ||
1374 | int ieee80211_register_hwmode(struct ieee80211_hw *hw, | |
1375 | struct ieee80211_hw_mode *mode) | |
1376 | { | |
1377 | struct ieee80211_local *local = hw_to_local(hw); | |
1378 | struct ieee80211_rate *rate; | |
1379 | int i; | |
1380 | ||
1381 | INIT_LIST_HEAD(&mode->list); | |
1382 | list_add_tail(&mode->list, &local->modes_list); | |
1383 | ||
1384 | local->hw_modes |= (1 << mode->mode); | |
1385 | for (i = 0; i < mode->num_rates; i++) { | |
1386 | rate = &(mode->rates[i]); | |
1387 | rate->rate_inv = CHAN_UTIL_RATE_LCM / rate->rate; | |
1388 | } | |
1389 | ieee80211_prepare_rates(local, mode); | |
1390 | ||
1391 | if (!local->oper_hw_mode) { | |
1392 | /* Default to this mode */ | |
1393 | local->hw.conf.phymode = mode->mode; | |
1394 | local->oper_hw_mode = local->scan_hw_mode = mode; | |
1395 | local->oper_channel = local->scan_channel = &mode->channels[0]; | |
1396 | local->hw.conf.mode = local->oper_hw_mode; | |
1397 | local->hw.conf.chan = local->oper_channel; | |
1398 | } | |
1399 | ||
1400 | if (!(hw->flags & IEEE80211_HW_DEFAULT_REG_DOMAIN_CONFIGURED)) | |
fd8bacc9 | 1401 | ieee80211_set_default_regdomain(mode); |
f0706e82 JB |
1402 | |
1403 | return 0; | |
1404 | } | |
1405 | EXPORT_SYMBOL(ieee80211_register_hwmode); | |
1406 | ||
1407 | void ieee80211_unregister_hw(struct ieee80211_hw *hw) | |
1408 | { | |
1409 | struct ieee80211_local *local = hw_to_local(hw); | |
1410 | struct ieee80211_sub_if_data *sdata, *tmp; | |
1411 | struct list_head tmp_list; | |
1412 | int i; | |
1413 | ||
1414 | tasklet_kill(&local->tx_pending_tasklet); | |
1415 | tasklet_kill(&local->tasklet); | |
1416 | ||
1417 | rtnl_lock(); | |
1418 | ||
1419 | BUG_ON(local->reg_state != IEEE80211_DEV_REGISTERED); | |
1420 | ||
1421 | local->reg_state = IEEE80211_DEV_UNREGISTERED; | |
1422 | if (local->apdev) | |
1423 | ieee80211_if_del_mgmt(local); | |
1424 | ||
1425 | write_lock_bh(&local->sub_if_lock); | |
1426 | list_replace_init(&local->sub_if_list, &tmp_list); | |
1427 | write_unlock_bh(&local->sub_if_lock); | |
1428 | ||
1429 | list_for_each_entry_safe(sdata, tmp, &tmp_list, list) | |
1430 | __ieee80211_if_del(local, sdata); | |
1431 | ||
1432 | rtnl_unlock(); | |
1433 | ||
f0706e82 JB |
1434 | ieee80211_rx_bss_list_deinit(local->mdev); |
1435 | ieee80211_clear_tx_pending(local); | |
1436 | sta_info_stop(local); | |
1437 | rate_control_deinitialize(local); | |
e9f207f0 | 1438 | debugfs_hw_del(local); |
f0706e82 JB |
1439 | |
1440 | for (i = 0; i < NUM_IEEE80211_MODES; i++) { | |
1441 | kfree(local->supp_rates[i]); | |
1442 | kfree(local->basic_rates[i]); | |
1443 | } | |
1444 | ||
1445 | if (skb_queue_len(&local->skb_queue) | |
1446 | || skb_queue_len(&local->skb_queue_unreliable)) | |
1447 | printk(KERN_WARNING "%s: skb_queue not empty\n", | |
1448 | local->mdev->name); | |
1449 | skb_queue_purge(&local->skb_queue); | |
1450 | skb_queue_purge(&local->skb_queue_unreliable); | |
1451 | ||
1452 | destroy_workqueue(local->hw.workqueue); | |
1453 | wiphy_unregister(local->hw.wiphy); | |
1454 | ieee80211_wep_free(local); | |
1455 | ieee80211_led_exit(local); | |
1456 | } | |
1457 | EXPORT_SYMBOL(ieee80211_unregister_hw); | |
1458 | ||
1459 | void ieee80211_free_hw(struct ieee80211_hw *hw) | |
1460 | { | |
1461 | struct ieee80211_local *local = hw_to_local(hw); | |
1462 | ||
1463 | ieee80211_if_free(local->mdev); | |
1464 | wiphy_free(local->hw.wiphy); | |
1465 | } | |
1466 | EXPORT_SYMBOL(ieee80211_free_hw); | |
1467 | ||
f0706e82 JB |
1468 | struct net_device_stats *ieee80211_dev_stats(struct net_device *dev) |
1469 | { | |
1470 | struct ieee80211_sub_if_data *sdata; | |
1471 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
1472 | return &sdata->stats; | |
1473 | } | |
1474 | ||
1475 | static int __init ieee80211_init(void) | |
1476 | { | |
1477 | struct sk_buff *skb; | |
1478 | int ret; | |
1479 | ||
1480 | BUILD_BUG_ON(sizeof(struct ieee80211_tx_packet_data) > sizeof(skb->cb)); | |
1481 | ||
1482 | ret = ieee80211_wme_register(); | |
1483 | if (ret) { | |
1484 | printk(KERN_DEBUG "ieee80211_init: failed to " | |
1485 | "initialize WME (err=%d)\n", ret); | |
1486 | return ret; | |
1487 | } | |
1488 | ||
e9f207f0 | 1489 | ieee80211_debugfs_netdev_init(); |
fd8bacc9 | 1490 | ieee80211_regdomain_init(); |
e9f207f0 | 1491 | |
f0706e82 JB |
1492 | return 0; |
1493 | } | |
1494 | ||
f0706e82 JB |
1495 | static void __exit ieee80211_exit(void) |
1496 | { | |
1497 | ieee80211_wme_unregister(); | |
e9f207f0 | 1498 | ieee80211_debugfs_netdev_exit(); |
f0706e82 JB |
1499 | } |
1500 | ||
1501 | ||
ca9938fe | 1502 | subsys_initcall(ieee80211_init); |
f0706e82 JB |
1503 | module_exit(ieee80211_exit); |
1504 | ||
1505 | MODULE_DESCRIPTION("IEEE 802.11 subsystem"); | |
1506 | MODULE_LICENSE("GPL"); |