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Commit | Line | Data |
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f0706e82 JB |
1 | /* |
2 | * Copyright 2002-2005, Instant802 Networks, Inc. | |
3 | * Copyright 2005-2006, Devicescape Software, Inc. | |
4 | * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License version 2 as | |
8 | * published by the Free Software Foundation. | |
9 | */ | |
10 | ||
11 | #include <net/mac80211.h> | |
12 | #include <net/ieee80211_radiotap.h> | |
13 | #include <linux/module.h> | |
14 | #include <linux/init.h> | |
15 | #include <linux/netdevice.h> | |
16 | #include <linux/types.h> | |
17 | #include <linux/slab.h> | |
18 | #include <linux/skbuff.h> | |
19 | #include <linux/etherdevice.h> | |
20 | #include <linux/if_arp.h> | |
21 | #include <linux/wireless.h> | |
22 | #include <linux/rtnetlink.h> | |
f0706e82 | 23 | #include <linux/bitmap.h> |
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" | |
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; | |
44 | __le16 tx_flags; | |
45 | u8 data_retries; | |
46 | } __attribute__ ((packed)); | |
47 | ||
b2c258fb | 48 | /* common interface routines */ |
b306f453 | 49 | |
b95cce35 | 50 | static int header_parse_80211(const struct sk_buff *skb, unsigned char *haddr) |
b2c258fb JB |
51 | { |
52 | memcpy(haddr, skb_mac_header(skb) + 10, ETH_ALEN); /* addr2 */ | |
53 | return ETH_ALEN; | |
54 | } | |
f0706e82 | 55 | |
b2c258fb | 56 | /* master interface */ |
f0706e82 | 57 | |
b2c258fb JB |
58 | static int ieee80211_master_open(struct net_device *dev) |
59 | { | |
60 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
61 | struct ieee80211_sub_if_data *sdata; | |
62 | int res = -EOPNOTSUPP; | |
f0706e82 | 63 | |
b2c258fb JB |
64 | read_lock(&local->sub_if_lock); |
65 | list_for_each_entry(sdata, &local->sub_if_list, list) { | |
66 | if (sdata->dev != dev && netif_running(sdata->dev)) { | |
67 | res = 0; | |
68 | break; | |
69 | } | |
70 | } | |
71 | read_unlock(&local->sub_if_lock); | |
72 | return res; | |
73 | } | |
f0706e82 | 74 | |
b2c258fb | 75 | static int ieee80211_master_stop(struct net_device *dev) |
f0706e82 | 76 | { |
b2c258fb JB |
77 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); |
78 | struct ieee80211_sub_if_data *sdata; | |
f0706e82 | 79 | |
b2c258fb JB |
80 | read_lock(&local->sub_if_lock); |
81 | list_for_each_entry(sdata, &local->sub_if_list, list) | |
82 | if (sdata->dev != dev && netif_running(sdata->dev)) | |
83 | dev_close(sdata->dev); | |
84 | read_unlock(&local->sub_if_lock); | |
f0706e82 | 85 | |
b2c258fb JB |
86 | return 0; |
87 | } | |
f0706e82 | 88 | |
b2c258fb | 89 | /* management interface */ |
f0706e82 | 90 | |
b2c258fb JB |
91 | static void |
92 | ieee80211_fill_frame_info(struct ieee80211_local *local, | |
93 | struct ieee80211_frame_info *fi, | |
94 | struct ieee80211_rx_status *status) | |
95 | { | |
96 | if (status) { | |
97 | struct timespec ts; | |
98 | struct ieee80211_rate *rate; | |
f0706e82 | 99 | |
b2c258fb JB |
100 | jiffies_to_timespec(jiffies, &ts); |
101 | fi->hosttime = cpu_to_be64((u64) ts.tv_sec * 1000000 + | |
102 | ts.tv_nsec / 1000); | |
103 | fi->mactime = cpu_to_be64(status->mactime); | |
104 | switch (status->phymode) { | |
f0706e82 | 105 | case MODE_IEEE80211A: |
b2c258fb | 106 | fi->phytype = htonl(ieee80211_phytype_ofdm_dot11_a); |
f0706e82 JB |
107 | break; |
108 | case MODE_IEEE80211B: | |
b2c258fb | 109 | fi->phytype = htonl(ieee80211_phytype_dsss_dot11_b); |
f0706e82 JB |
110 | break; |
111 | case MODE_IEEE80211G: | |
b2c258fb | 112 | fi->phytype = htonl(ieee80211_phytype_pbcc_dot11_g); |
f0706e82 | 113 | break; |
b2c258fb JB |
114 | default: |
115 | fi->phytype = htonl(0xAAAAAAAA); | |
f0706e82 JB |
116 | break; |
117 | } | |
b2c258fb JB |
118 | fi->channel = htonl(status->channel); |
119 | rate = ieee80211_get_rate(local, status->phymode, | |
120 | status->rate); | |
121 | if (rate) { | |
122 | fi->datarate = htonl(rate->rate); | |
123 | if (rate->flags & IEEE80211_RATE_PREAMBLE2) { | |
124 | if (status->rate == rate->val) | |
125 | fi->preamble = htonl(2); /* long */ | |
126 | else if (status->rate == rate->val2) | |
127 | fi->preamble = htonl(1); /* short */ | |
128 | } else | |
129 | fi->preamble = htonl(0); | |
130 | } else { | |
131 | fi->datarate = htonl(0); | |
132 | fi->preamble = htonl(0); | |
133 | } | |
134 | ||
135 | fi->antenna = htonl(status->antenna); | |
136 | fi->priority = htonl(0xffffffff); /* no clue */ | |
137 | fi->ssi_type = htonl(ieee80211_ssi_raw); | |
138 | fi->ssi_signal = htonl(status->ssi); | |
139 | fi->ssi_noise = 0x00000000; | |
140 | fi->encoding = 0; | |
141 | } else { | |
142 | /* clear everything because we really don't know. | |
143 | * the msg_type field isn't present on monitor frames | |
144 | * so we don't know whether it will be present or not, | |
145 | * but it's ok to not clear it since it'll be assigned | |
146 | * anyway */ | |
147 | memset(fi, 0, sizeof(*fi) - sizeof(fi->msg_type)); | |
148 | ||
149 | fi->ssi_type = htonl(ieee80211_ssi_none); | |
150 | } | |
151 | fi->version = htonl(IEEE80211_FI_VERSION); | |
152 | fi->length = cpu_to_be32(sizeof(*fi) - sizeof(fi->msg_type)); | |
153 | } | |
154 | ||
155 | /* this routine is actually not just for this, but also | |
156 | * for pushing fake 'management' frames into userspace. | |
157 | * it shall be replaced by a netlink-based system. */ | |
158 | void | |
159 | ieee80211_rx_mgmt(struct ieee80211_local *local, struct sk_buff *skb, | |
160 | struct ieee80211_rx_status *status, u32 msg_type) | |
161 | { | |
162 | struct ieee80211_frame_info *fi; | |
163 | const size_t hlen = sizeof(struct ieee80211_frame_info); | |
68aae116 | 164 | struct net_device *dev = local->apdev; |
b2c258fb | 165 | |
68aae116 | 166 | skb->dev = dev; |
b2c258fb JB |
167 | |
168 | if (skb_headroom(skb) < hlen) { | |
169 | I802_DEBUG_INC(local->rx_expand_skb_head); | |
170 | if (pskb_expand_head(skb, hlen, 0, GFP_ATOMIC)) { | |
171 | dev_kfree_skb(skb); | |
172 | return; | |
173 | } | |
f0706e82 | 174 | } |
b2c258fb JB |
175 | |
176 | fi = (struct ieee80211_frame_info *) skb_push(skb, hlen); | |
177 | ||
178 | ieee80211_fill_frame_info(local, fi, status); | |
179 | fi->msg_type = htonl(msg_type); | |
180 | ||
68aae116 SH |
181 | dev->stats.rx_packets++; |
182 | dev->stats.rx_bytes += skb->len; | |
b2c258fb JB |
183 | |
184 | skb_set_mac_header(skb, 0); | |
185 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
186 | skb->pkt_type = PACKET_OTHERHOST; | |
187 | skb->protocol = htons(ETH_P_802_2); | |
188 | memset(skb->cb, 0, sizeof(skb->cb)); | |
189 | netif_rx(skb); | |
f0706e82 JB |
190 | } |
191 | ||
b2c258fb | 192 | static int ieee80211_mgmt_open(struct net_device *dev) |
f0706e82 | 193 | { |
b2c258fb | 194 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); |
f0706e82 | 195 | |
b2c258fb JB |
196 | if (!netif_running(local->mdev)) |
197 | return -EOPNOTSUPP; | |
198 | return 0; | |
e2ebc74d | 199 | } |
f0706e82 | 200 | |
b2c258fb | 201 | static int ieee80211_mgmt_stop(struct net_device *dev) |
e2ebc74d | 202 | { |
b2c258fb JB |
203 | return 0; |
204 | } | |
f0706e82 | 205 | |
b2c258fb JB |
206 | static int ieee80211_change_mtu_apdev(struct net_device *dev, int new_mtu) |
207 | { | |
208 | /* FIX: what would be proper limits for MTU? | |
209 | * This interface uses 802.11 frames. */ | |
210 | if (new_mtu < 256 || new_mtu > IEEE80211_MAX_DATA_LEN) { | |
211 | printk(KERN_WARNING "%s: invalid MTU %d\n", | |
212 | dev->name, new_mtu); | |
213 | return -EINVAL; | |
f0706e82 | 214 | } |
f0706e82 | 215 | |
b2c258fb JB |
216 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
217 | printk(KERN_DEBUG "%s: setting MTU %d\n", dev->name, new_mtu); | |
218 | #endif /* CONFIG_MAC80211_VERBOSE_DEBUG */ | |
219 | dev->mtu = new_mtu; | |
220 | return 0; | |
e2ebc74d | 221 | } |
f0706e82 | 222 | |
b2c258fb | 223 | void ieee80211_if_mgmt_setup(struct net_device *dev) |
e2ebc74d | 224 | { |
b2c258fb JB |
225 | ether_setup(dev); |
226 | dev->hard_start_xmit = ieee80211_mgmt_start_xmit; | |
227 | dev->change_mtu = ieee80211_change_mtu_apdev; | |
b2c258fb JB |
228 | dev->open = ieee80211_mgmt_open; |
229 | dev->stop = ieee80211_mgmt_stop; | |
230 | dev->type = ARPHRD_IEEE80211_PRISM; | |
b2c258fb JB |
231 | dev->uninit = ieee80211_if_reinit; |
232 | dev->destructor = ieee80211_if_free; | |
f0706e82 JB |
233 | } |
234 | ||
b2c258fb | 235 | /* regular interfaces */ |
f0706e82 | 236 | |
b2c258fb | 237 | static int ieee80211_change_mtu(struct net_device *dev, int new_mtu) |
f0706e82 | 238 | { |
b2c258fb JB |
239 | /* FIX: what would be proper limits for MTU? |
240 | * This interface uses 802.3 frames. */ | |
241 | if (new_mtu < 256 || new_mtu > IEEE80211_MAX_DATA_LEN - 24 - 6) { | |
242 | printk(KERN_WARNING "%s: invalid MTU %d\n", | |
243 | dev->name, new_mtu); | |
244 | return -EINVAL; | |
245 | } | |
f0706e82 | 246 | |
b2c258fb JB |
247 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
248 | printk(KERN_DEBUG "%s: setting MTU %d\n", dev->name, new_mtu); | |
249 | #endif /* CONFIG_MAC80211_VERBOSE_DEBUG */ | |
250 | dev->mtu = new_mtu; | |
f0706e82 JB |
251 | return 0; |
252 | } | |
253 | ||
b2c258fb JB |
254 | static inline int identical_mac_addr_allowed(int type1, int type2) |
255 | { | |
256 | return (type1 == IEEE80211_IF_TYPE_MNTR || | |
257 | type2 == IEEE80211_IF_TYPE_MNTR || | |
258 | (type1 == IEEE80211_IF_TYPE_AP && | |
259 | type2 == IEEE80211_IF_TYPE_WDS) || | |
260 | (type1 == IEEE80211_IF_TYPE_WDS && | |
261 | (type2 == IEEE80211_IF_TYPE_WDS || | |
262 | type2 == IEEE80211_IF_TYPE_AP)) || | |
263 | (type1 == IEEE80211_IF_TYPE_AP && | |
264 | type2 == IEEE80211_IF_TYPE_VLAN) || | |
265 | (type1 == IEEE80211_IF_TYPE_VLAN && | |
266 | (type2 == IEEE80211_IF_TYPE_AP || | |
267 | type2 == IEEE80211_IF_TYPE_VLAN))); | |
268 | } | |
f0706e82 | 269 | |
b2c258fb JB |
270 | /* Check if running monitor interfaces should go to a "soft monitor" mode |
271 | * and switch them if necessary. */ | |
272 | static inline void ieee80211_start_soft_monitor(struct ieee80211_local *local) | |
f0706e82 | 273 | { |
b2c258fb | 274 | struct ieee80211_if_init_conf conf; |
f0706e82 | 275 | |
b2c258fb JB |
276 | if (local->open_count && local->open_count == local->monitors && |
277 | !(local->hw.flags & IEEE80211_HW_MONITOR_DURING_OPER) && | |
278 | local->ops->remove_interface) { | |
279 | conf.if_id = -1; | |
280 | conf.type = IEEE80211_IF_TYPE_MNTR; | |
281 | conf.mac_addr = NULL; | |
282 | local->ops->remove_interface(local_to_hw(local), &conf); | |
f0706e82 | 283 | } |
f0706e82 JB |
284 | } |
285 | ||
b2c258fb JB |
286 | /* Check if running monitor interfaces should go to a "hard monitor" mode |
287 | * and switch them if necessary. */ | |
288 | static void ieee80211_start_hard_monitor(struct ieee80211_local *local) | |
f0706e82 | 289 | { |
b2c258fb | 290 | struct ieee80211_if_init_conf conf; |
f0706e82 | 291 | |
b2c258fb JB |
292 | if (local->open_count && local->open_count == local->monitors && |
293 | !(local->hw.flags & IEEE80211_HW_MONITOR_DURING_OPER)) { | |
294 | conf.if_id = -1; | |
295 | conf.type = IEEE80211_IF_TYPE_MNTR; | |
296 | conf.mac_addr = NULL; | |
297 | local->ops->add_interface(local_to_hw(local), &conf); | |
f0706e82 | 298 | } |
e2ebc74d | 299 | } |
f0706e82 | 300 | |
8a69aa93 DD |
301 | static void ieee80211_if_open(struct net_device *dev) |
302 | { | |
303 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
304 | ||
305 | switch (sdata->type) { | |
306 | case IEEE80211_IF_TYPE_STA: | |
307 | case IEEE80211_IF_TYPE_IBSS: | |
d6f2da5b | 308 | sdata->u.sta.flags &= ~IEEE80211_STA_PREV_BSSID_SET; |
8a69aa93 DD |
309 | break; |
310 | } | |
311 | } | |
312 | ||
b2c258fb | 313 | static int ieee80211_open(struct net_device *dev) |
e2ebc74d | 314 | { |
b2c258fb JB |
315 | struct ieee80211_sub_if_data *sdata, *nsdata; |
316 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
317 | struct ieee80211_if_init_conf conf; | |
318 | int res; | |
f0706e82 | 319 | |
b2c258fb JB |
320 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
321 | read_lock(&local->sub_if_lock); | |
322 | list_for_each_entry(nsdata, &local->sub_if_list, list) { | |
323 | struct net_device *ndev = nsdata->dev; | |
e2ebc74d | 324 | |
b2c258fb JB |
325 | if (ndev != dev && ndev != local->mdev && netif_running(ndev) && |
326 | compare_ether_addr(dev->dev_addr, ndev->dev_addr) == 0 && | |
327 | !identical_mac_addr_allowed(sdata->type, nsdata->type)) { | |
328 | read_unlock(&local->sub_if_lock); | |
329 | return -ENOTUNIQ; | |
330 | } | |
331 | } | |
332 | read_unlock(&local->sub_if_lock); | |
f0706e82 | 333 | |
b2c258fb JB |
334 | if (sdata->type == IEEE80211_IF_TYPE_WDS && |
335 | is_zero_ether_addr(sdata->u.wds.remote_addr)) | |
336 | return -ENOLINK; | |
f0706e82 | 337 | |
b2c258fb JB |
338 | if (sdata->type == IEEE80211_IF_TYPE_MNTR && local->open_count && |
339 | !(local->hw.flags & IEEE80211_HW_MONITOR_DURING_OPER)) { | |
340 | /* run the interface in a "soft monitor" mode */ | |
341 | local->monitors++; | |
342 | local->open_count++; | |
343 | local->hw.conf.flags |= IEEE80211_CONF_RADIOTAP; | |
344 | return 0; | |
345 | } | |
8a69aa93 | 346 | ieee80211_if_open(dev); |
b2c258fb | 347 | ieee80211_start_soft_monitor(local); |
f0706e82 | 348 | |
b2c258fb JB |
349 | conf.if_id = dev->ifindex; |
350 | conf.type = sdata->type; | |
1bec3f1a JB |
351 | if (sdata->type == IEEE80211_IF_TYPE_MNTR) |
352 | conf.mac_addr = NULL; | |
353 | else | |
354 | conf.mac_addr = dev->dev_addr; | |
b2c258fb JB |
355 | res = local->ops->add_interface(local_to_hw(local), &conf); |
356 | if (res) { | |
357 | if (sdata->type == IEEE80211_IF_TYPE_MNTR) | |
358 | ieee80211_start_hard_monitor(local); | |
359 | return res; | |
360 | } | |
f0706e82 | 361 | |
b2c258fb JB |
362 | if (local->open_count == 0) { |
363 | res = 0; | |
364 | tasklet_enable(&local->tx_pending_tasklet); | |
365 | tasklet_enable(&local->tasklet); | |
366 | if (local->ops->open) | |
367 | res = local->ops->open(local_to_hw(local)); | |
368 | if (res == 0) { | |
369 | res = dev_open(local->mdev); | |
370 | if (res) { | |
371 | if (local->ops->stop) | |
372 | local->ops->stop(local_to_hw(local)); | |
373 | } else { | |
374 | res = ieee80211_hw_config(local); | |
375 | if (res && local->ops->stop) | |
376 | local->ops->stop(local_to_hw(local)); | |
377 | else if (!res && local->apdev) | |
378 | dev_open(local->apdev); | |
379 | } | |
380 | } | |
381 | if (res) { | |
382 | if (local->ops->remove_interface) | |
383 | local->ops->remove_interface(local_to_hw(local), | |
384 | &conf); | |
385 | return res; | |
386 | } | |
387 | } | |
388 | local->open_count++; | |
f0706e82 | 389 | |
b2c258fb JB |
390 | if (sdata->type == IEEE80211_IF_TYPE_MNTR) { |
391 | local->monitors++; | |
392 | local->hw.conf.flags |= IEEE80211_CONF_RADIOTAP; | |
d9430a32 | 393 | } else { |
b2c258fb | 394 | ieee80211_if_config(dev); |
d9430a32 | 395 | ieee80211_reset_erp_info(dev); |
11a843b7 | 396 | ieee80211_enable_keys(sdata); |
d9430a32 | 397 | } |
f0706e82 | 398 | |
b2c258fb JB |
399 | if (sdata->type == IEEE80211_IF_TYPE_STA && |
400 | !local->user_space_mlme) | |
401 | netif_carrier_off(dev); | |
402 | else | |
403 | netif_carrier_on(dev); | |
f0706e82 | 404 | |
b2c258fb JB |
405 | netif_start_queue(dev); |
406 | return 0; | |
f0706e82 | 407 | } |
f0706e82 | 408 | |
b2c258fb | 409 | static void ieee80211_if_shutdown(struct net_device *dev) |
f0706e82 | 410 | { |
f0706e82 | 411 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); |
b2c258fb | 412 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
f0706e82 | 413 | |
b2c258fb JB |
414 | ASSERT_RTNL(); |
415 | switch (sdata->type) { | |
416 | case IEEE80211_IF_TYPE_STA: | |
417 | case IEEE80211_IF_TYPE_IBSS: | |
418 | sdata->u.sta.state = IEEE80211_DISABLED; | |
419 | del_timer_sync(&sdata->u.sta.timer); | |
2a8a9a88 JB |
420 | /* |
421 | * Holding the sub_if_lock for writing here blocks | |
422 | * out the receive path and makes sure it's not | |
423 | * currently processing a packet that may get | |
424 | * added to the queue. | |
425 | */ | |
426 | write_lock_bh(&local->sub_if_lock); | |
b2c258fb | 427 | skb_queue_purge(&sdata->u.sta.skb_queue); |
2a8a9a88 JB |
428 | write_unlock_bh(&local->sub_if_lock); |
429 | ||
b2c258fb JB |
430 | if (!local->ops->hw_scan && |
431 | local->scan_dev == sdata->dev) { | |
432 | local->sta_scanning = 0; | |
433 | cancel_delayed_work(&local->scan_work); | |
434 | } | |
435 | flush_workqueue(local->hw.workqueue); | |
436 | break; | |
f0706e82 | 437 | } |
f0706e82 JB |
438 | } |
439 | ||
b2c258fb | 440 | static int ieee80211_stop(struct net_device *dev) |
f0706e82 | 441 | { |
b2c258fb | 442 | struct ieee80211_sub_if_data *sdata; |
f0706e82 | 443 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); |
f0706e82 | 444 | |
b2c258fb | 445 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
f0706e82 | 446 | |
b2c258fb JB |
447 | if (sdata->type == IEEE80211_IF_TYPE_MNTR && |
448 | local->open_count > 1 && | |
449 | !(local->hw.flags & IEEE80211_HW_MONITOR_DURING_OPER)) { | |
450 | /* remove "soft monitor" interface */ | |
451 | local->open_count--; | |
452 | local->monitors--; | |
453 | if (!local->monitors) | |
454 | local->hw.conf.flags &= ~IEEE80211_CONF_RADIOTAP; | |
455 | return 0; | |
f0706e82 JB |
456 | } |
457 | ||
b2c258fb JB |
458 | netif_stop_queue(dev); |
459 | ieee80211_if_shutdown(dev); | |
f0706e82 | 460 | |
b2c258fb JB |
461 | if (sdata->type == IEEE80211_IF_TYPE_MNTR) { |
462 | local->monitors--; | |
463 | if (!local->monitors) | |
464 | local->hw.conf.flags &= ~IEEE80211_CONF_RADIOTAP; | |
11a843b7 JB |
465 | } else { |
466 | /* disable all keys for as long as this netdev is down */ | |
467 | ieee80211_disable_keys(sdata); | |
f0706e82 JB |
468 | } |
469 | ||
b2c258fb JB |
470 | local->open_count--; |
471 | if (local->open_count == 0) { | |
472 | if (netif_running(local->mdev)) | |
473 | dev_close(local->mdev); | |
474 | if (local->apdev) | |
475 | dev_close(local->apdev); | |
476 | if (local->ops->stop) | |
477 | local->ops->stop(local_to_hw(local)); | |
478 | tasklet_disable(&local->tx_pending_tasklet); | |
479 | tasklet_disable(&local->tasklet); | |
480 | } | |
481 | if (local->ops->remove_interface) { | |
482 | struct ieee80211_if_init_conf conf; | |
f0706e82 | 483 | |
b2c258fb JB |
484 | conf.if_id = dev->ifindex; |
485 | conf.type = sdata->type; | |
486 | conf.mac_addr = dev->dev_addr; | |
487 | local->ops->remove_interface(local_to_hw(local), &conf); | |
f0706e82 JB |
488 | } |
489 | ||
b2c258fb JB |
490 | ieee80211_start_hard_monitor(local); |
491 | ||
f0706e82 JB |
492 | return 0; |
493 | } | |
494 | ||
495 | enum netif_tx_lock_class { | |
496 | TX_LOCK_NORMAL, | |
497 | TX_LOCK_MASTER, | |
498 | }; | |
499 | ||
500 | static inline void netif_tx_lock_nested(struct net_device *dev, int subclass) | |
501 | { | |
502 | spin_lock_nested(&dev->_xmit_lock, subclass); | |
503 | dev->xmit_lock_owner = smp_processor_id(); | |
504 | } | |
505 | ||
506 | static void ieee80211_set_multicast_list(struct net_device *dev) | |
507 | { | |
508 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
509 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
510 | unsigned short flags; | |
511 | ||
512 | netif_tx_lock_nested(local->mdev, TX_LOCK_MASTER); | |
13262ffd JS |
513 | if (((dev->flags & IFF_ALLMULTI) != 0) ^ |
514 | ((sdata->flags & IEEE80211_SDATA_ALLMULTI) != 0)) { | |
515 | if (sdata->flags & IEEE80211_SDATA_ALLMULTI) | |
f0706e82 | 516 | local->iff_allmultis--; |
13262ffd | 517 | else |
f0706e82 | 518 | local->iff_allmultis++; |
13262ffd | 519 | sdata->flags ^= IEEE80211_SDATA_ALLMULTI; |
f0706e82 | 520 | } |
13262ffd JS |
521 | if (((dev->flags & IFF_PROMISC) != 0) ^ |
522 | ((sdata->flags & IEEE80211_SDATA_PROMISC) != 0)) { | |
523 | if (sdata->flags & IEEE80211_SDATA_PROMISC) | |
f0706e82 | 524 | local->iff_promiscs--; |
13262ffd | 525 | else |
f0706e82 | 526 | local->iff_promiscs++; |
13262ffd | 527 | sdata->flags ^= IEEE80211_SDATA_PROMISC; |
f0706e82 JB |
528 | } |
529 | if (dev->mc_count != sdata->mc_count) { | |
530 | local->mc_count = local->mc_count - sdata->mc_count + | |
531 | dev->mc_count; | |
532 | sdata->mc_count = dev->mc_count; | |
533 | } | |
534 | if (local->ops->set_multicast_list) { | |
535 | flags = local->mdev->flags; | |
536 | if (local->iff_allmultis) | |
537 | flags |= IFF_ALLMULTI; | |
538 | if (local->iff_promiscs) | |
539 | flags |= IFF_PROMISC; | |
540 | read_lock(&local->sub_if_lock); | |
541 | local->ops->set_multicast_list(local_to_hw(local), flags, | |
542 | local->mc_count); | |
543 | read_unlock(&local->sub_if_lock); | |
544 | } | |
545 | netif_tx_unlock(local->mdev); | |
546 | } | |
547 | ||
3b04ddde SH |
548 | static const struct header_ops ieee80211_header_ops = { |
549 | .create = eth_header, | |
550 | .parse = header_parse_80211, | |
551 | .rebuild = eth_rebuild_header, | |
552 | .cache = eth_header_cache, | |
553 | .cache_update = eth_header_cache_update, | |
554 | }; | |
555 | ||
b2c258fb JB |
556 | /* Must not be called for mdev and apdev */ |
557 | void ieee80211_if_setup(struct net_device *dev) | |
f0706e82 | 558 | { |
b2c258fb | 559 | ether_setup(dev); |
3b04ddde | 560 | dev->header_ops = &ieee80211_header_ops; |
b2c258fb JB |
561 | dev->hard_start_xmit = ieee80211_subif_start_xmit; |
562 | dev->wireless_handlers = &ieee80211_iw_handler_def; | |
563 | dev->set_multicast_list = ieee80211_set_multicast_list; | |
564 | dev->change_mtu = ieee80211_change_mtu; | |
b2c258fb JB |
565 | dev->open = ieee80211_open; |
566 | dev->stop = ieee80211_stop; | |
567 | dev->uninit = ieee80211_if_reinit; | |
568 | dev->destructor = ieee80211_if_free; | |
569 | } | |
f0706e82 | 570 | |
b2c258fb JB |
571 | /* WDS specialties */ |
572 | ||
573 | int ieee80211_if_update_wds(struct net_device *dev, u8 *remote_addr) | |
574 | { | |
575 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
576 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
577 | struct sta_info *sta; | |
0795af57 | 578 | DECLARE_MAC_BUF(mac); |
b2c258fb JB |
579 | |
580 | if (compare_ether_addr(remote_addr, sdata->u.wds.remote_addr) == 0) | |
581 | return 0; | |
582 | ||
583 | /* Create STA entry for the new peer */ | |
584 | sta = sta_info_add(local, dev, remote_addr, GFP_KERNEL); | |
585 | if (!sta) | |
586 | return -ENOMEM; | |
587 | sta_info_put(sta); | |
588 | ||
589 | /* Remove STA entry for the old peer */ | |
590 | sta = sta_info_get(local, sdata->u.wds.remote_addr); | |
591 | if (sta) { | |
be8755e1 | 592 | sta_info_free(sta); |
b2c258fb | 593 | sta_info_put(sta); |
b2c258fb JB |
594 | } else { |
595 | printk(KERN_DEBUG "%s: could not find STA entry for WDS link " | |
0795af57 JP |
596 | "peer %s\n", |
597 | dev->name, print_mac(mac, sdata->u.wds.remote_addr)); | |
b2c258fb JB |
598 | } |
599 | ||
600 | /* Update WDS link data */ | |
601 | memcpy(&sdata->u.wds.remote_addr, remote_addr, ETH_ALEN); | |
602 | ||
603 | return 0; | |
f0706e82 | 604 | } |
f0706e82 | 605 | |
b2c258fb JB |
606 | /* everything else */ |
607 | ||
b2c258fb JB |
608 | static int __ieee80211_if_config(struct net_device *dev, |
609 | struct sk_buff *beacon, | |
610 | struct ieee80211_tx_control *control) | |
611 | { | |
612 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
613 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
614 | struct ieee80211_if_conf conf; | |
615 | static u8 scan_bssid[] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; | |
616 | ||
617 | if (!local->ops->config_interface || !netif_running(dev)) | |
f0706e82 | 618 | return 0; |
f0706e82 | 619 | |
b2c258fb | 620 | memset(&conf, 0, sizeof(conf)); |
4480f15c | 621 | conf.type = sdata->type; |
b2c258fb JB |
622 | if (sdata->type == IEEE80211_IF_TYPE_STA || |
623 | sdata->type == IEEE80211_IF_TYPE_IBSS) { | |
624 | if (local->sta_scanning && | |
625 | local->scan_dev == dev) | |
626 | conf.bssid = scan_bssid; | |
627 | else | |
628 | conf.bssid = sdata->u.sta.bssid; | |
629 | conf.ssid = sdata->u.sta.ssid; | |
630 | conf.ssid_len = sdata->u.sta.ssid_len; | |
631 | conf.generic_elem = sdata->u.sta.extra_ie; | |
632 | conf.generic_elem_len = sdata->u.sta.extra_ie_len; | |
633 | } else if (sdata->type == IEEE80211_IF_TYPE_AP) { | |
634 | conf.ssid = sdata->u.ap.ssid; | |
635 | conf.ssid_len = sdata->u.ap.ssid_len; | |
636 | conf.generic_elem = sdata->u.ap.generic_elem; | |
637 | conf.generic_elem_len = sdata->u.ap.generic_elem_len; | |
638 | conf.beacon = beacon; | |
639 | conf.beacon_control = control; | |
f0706e82 | 640 | } |
b2c258fb JB |
641 | return local->ops->config_interface(local_to_hw(local), |
642 | dev->ifindex, &conf); | |
f0706e82 JB |
643 | } |
644 | ||
b2c258fb JB |
645 | int ieee80211_if_config(struct net_device *dev) |
646 | { | |
647 | return __ieee80211_if_config(dev, NULL, NULL); | |
648 | } | |
f0706e82 | 649 | |
b2c258fb | 650 | int ieee80211_if_config_beacon(struct net_device *dev) |
f0706e82 | 651 | { |
f0706e82 | 652 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); |
b2c258fb JB |
653 | struct ieee80211_tx_control control; |
654 | struct sk_buff *skb; | |
f0706e82 | 655 | |
b2c258fb | 656 | if (!(local->hw.flags & IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE)) |
f0706e82 | 657 | return 0; |
b2c258fb JB |
658 | skb = ieee80211_beacon_get(local_to_hw(local), dev->ifindex, &control); |
659 | if (!skb) | |
660 | return -ENOMEM; | |
661 | return __ieee80211_if_config(dev, skb, &control); | |
662 | } | |
f0706e82 | 663 | |
b2c258fb JB |
664 | int ieee80211_hw_config(struct ieee80211_local *local) |
665 | { | |
666 | struct ieee80211_hw_mode *mode; | |
667 | struct ieee80211_channel *chan; | |
668 | int ret = 0; | |
f0706e82 | 669 | |
b2c258fb JB |
670 | if (local->sta_scanning) { |
671 | chan = local->scan_channel; | |
672 | mode = local->scan_hw_mode; | |
673 | } else { | |
674 | chan = local->oper_channel; | |
675 | mode = local->oper_hw_mode; | |
f0706e82 JB |
676 | } |
677 | ||
b2c258fb JB |
678 | local->hw.conf.channel = chan->chan; |
679 | local->hw.conf.channel_val = chan->val; | |
61609bc0 MB |
680 | if (!local->hw.conf.power_level) { |
681 | local->hw.conf.power_level = chan->power_level; | |
682 | } else { | |
683 | local->hw.conf.power_level = min(chan->power_level, | |
684 | local->hw.conf.power_level); | |
685 | } | |
b2c258fb JB |
686 | local->hw.conf.freq = chan->freq; |
687 | local->hw.conf.phymode = mode->mode; | |
688 | local->hw.conf.antenna_max = chan->antenna_max; | |
689 | local->hw.conf.chan = chan; | |
690 | local->hw.conf.mode = mode; | |
f0706e82 | 691 | |
b2c258fb JB |
692 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
693 | printk(KERN_DEBUG "HW CONFIG: channel=%d freq=%d " | |
694 | "phymode=%d\n", local->hw.conf.channel, local->hw.conf.freq, | |
695 | local->hw.conf.phymode); | |
696 | #endif /* CONFIG_MAC80211_VERBOSE_DEBUG */ | |
697 | ||
698 | if (local->ops->config) | |
699 | ret = local->ops->config(local_to_hw(local), &local->hw.conf); | |
f0706e82 | 700 | |
b2c258fb JB |
701 | return ret; |
702 | } | |
f0706e82 | 703 | |
d9430a32 DD |
704 | void ieee80211_erp_info_change_notify(struct net_device *dev, u8 changes) |
705 | { | |
706 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
707 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
708 | if (local->ops->erp_ie_changed) | |
709 | local->ops->erp_ie_changed(local_to_hw(local), changes, | |
13262ffd JS |
710 | !!(sdata->flags & IEEE80211_SDATA_USE_PROTECTION), |
711 | !(sdata->flags & IEEE80211_SDATA_SHORT_PREAMBLE)); | |
d9430a32 DD |
712 | } |
713 | ||
714 | void ieee80211_reset_erp_info(struct net_device *dev) | |
715 | { | |
716 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
717 | ||
13262ffd JS |
718 | sdata->flags &= ~(IEEE80211_SDATA_USE_PROTECTION | |
719 | IEEE80211_SDATA_SHORT_PREAMBLE); | |
d9430a32 DD |
720 | ieee80211_erp_info_change_notify(dev, |
721 | IEEE80211_ERP_CHANGE_PROTECTION | | |
722 | IEEE80211_ERP_CHANGE_PREAMBLE); | |
723 | } | |
724 | ||
b2c258fb JB |
725 | struct dev_mc_list *ieee80211_get_mc_list_item(struct ieee80211_hw *hw, |
726 | struct dev_mc_list *prev, | |
727 | void **ptr) | |
f0706e82 | 728 | { |
b2c258fb JB |
729 | struct ieee80211_local *local = hw_to_local(hw); |
730 | struct ieee80211_sub_if_data *sdata = *ptr; | |
731 | struct dev_mc_list *mc; | |
732 | ||
733 | if (!prev) { | |
734 | WARN_ON(sdata); | |
735 | sdata = NULL; | |
736 | } | |
737 | if (!prev || !prev->next) { | |
738 | if (sdata) | |
739 | sdata = list_entry(sdata->list.next, | |
740 | struct ieee80211_sub_if_data, list); | |
741 | else | |
742 | sdata = list_entry(local->sub_if_list.next, | |
743 | struct ieee80211_sub_if_data, list); | |
744 | if (&sdata->list != &local->sub_if_list) | |
745 | mc = sdata->dev->mc_list; | |
746 | else | |
747 | mc = NULL; | |
748 | } else | |
749 | mc = prev->next; | |
750 | ||
751 | *ptr = sdata; | |
752 | return mc; | |
f0706e82 | 753 | } |
b2c258fb | 754 | EXPORT_SYMBOL(ieee80211_get_mc_list_item); |
f0706e82 | 755 | |
f0706e82 JB |
756 | void ieee80211_tx_status_irqsafe(struct ieee80211_hw *hw, |
757 | struct sk_buff *skb, | |
758 | struct ieee80211_tx_status *status) | |
759 | { | |
760 | struct ieee80211_local *local = hw_to_local(hw); | |
761 | struct ieee80211_tx_status *saved; | |
762 | int tmp; | |
763 | ||
764 | skb->dev = local->mdev; | |
765 | saved = kmalloc(sizeof(struct ieee80211_tx_status), GFP_ATOMIC); | |
766 | if (unlikely(!saved)) { | |
767 | if (net_ratelimit()) | |
768 | printk(KERN_WARNING "%s: Not enough memory, " | |
769 | "dropping tx status", skb->dev->name); | |
770 | /* should be dev_kfree_skb_irq, but due to this function being | |
771 | * named _irqsafe instead of just _irq we can't be sure that | |
772 | * people won't call it from non-irq contexts */ | |
773 | dev_kfree_skb_any(skb); | |
774 | return; | |
775 | } | |
776 | memcpy(saved, status, sizeof(struct ieee80211_tx_status)); | |
777 | /* copy pointer to saved status into skb->cb for use by tasklet */ | |
778 | memcpy(skb->cb, &saved, sizeof(saved)); | |
779 | ||
780 | skb->pkt_type = IEEE80211_TX_STATUS_MSG; | |
781 | skb_queue_tail(status->control.flags & IEEE80211_TXCTL_REQ_TX_STATUS ? | |
782 | &local->skb_queue : &local->skb_queue_unreliable, skb); | |
783 | tmp = skb_queue_len(&local->skb_queue) + | |
784 | skb_queue_len(&local->skb_queue_unreliable); | |
785 | while (tmp > IEEE80211_IRQSAFE_QUEUE_LIMIT && | |
786 | (skb = skb_dequeue(&local->skb_queue_unreliable))) { | |
787 | memcpy(&saved, skb->cb, sizeof(saved)); | |
788 | kfree(saved); | |
789 | dev_kfree_skb_irq(skb); | |
790 | tmp--; | |
791 | I802_DEBUG_INC(local->tx_status_drop); | |
792 | } | |
793 | tasklet_schedule(&local->tasklet); | |
794 | } | |
795 | EXPORT_SYMBOL(ieee80211_tx_status_irqsafe); | |
796 | ||
797 | static void ieee80211_tasklet_handler(unsigned long data) | |
798 | { | |
799 | struct ieee80211_local *local = (struct ieee80211_local *) data; | |
800 | struct sk_buff *skb; | |
801 | struct ieee80211_rx_status rx_status; | |
802 | struct ieee80211_tx_status *tx_status; | |
803 | ||
804 | while ((skb = skb_dequeue(&local->skb_queue)) || | |
805 | (skb = skb_dequeue(&local->skb_queue_unreliable))) { | |
806 | switch (skb->pkt_type) { | |
807 | case IEEE80211_RX_MSG: | |
808 | /* status is in skb->cb */ | |
809 | memcpy(&rx_status, skb->cb, sizeof(rx_status)); | |
810 | /* Clear skb->type in order to not confuse kernel | |
811 | * netstack. */ | |
812 | skb->pkt_type = 0; | |
813 | __ieee80211_rx(local_to_hw(local), skb, &rx_status); | |
814 | break; | |
815 | case IEEE80211_TX_STATUS_MSG: | |
816 | /* get pointer to saved status out of skb->cb */ | |
817 | memcpy(&tx_status, skb->cb, sizeof(tx_status)); | |
818 | skb->pkt_type = 0; | |
819 | ieee80211_tx_status(local_to_hw(local), | |
820 | skb, tx_status); | |
821 | kfree(tx_status); | |
822 | break; | |
823 | default: /* should never get here! */ | |
824 | printk(KERN_ERR "%s: Unknown message type (%d)\n", | |
dd1cd4c6 | 825 | wiphy_name(local->hw.wiphy), skb->pkt_type); |
f0706e82 JB |
826 | dev_kfree_skb(skb); |
827 | break; | |
828 | } | |
829 | } | |
830 | } | |
831 | ||
f0706e82 JB |
832 | /* Remove added headers (e.g., QoS control), encryption header/MIC, etc. to |
833 | * make a prepared TX frame (one that has been given to hw) to look like brand | |
834 | * new IEEE 802.11 frame that is ready to go through TX processing again. | |
835 | * Also, tx_packet_data in cb is restored from tx_control. */ | |
836 | static void ieee80211_remove_tx_extra(struct ieee80211_local *local, | |
837 | struct ieee80211_key *key, | |
838 | struct sk_buff *skb, | |
839 | struct ieee80211_tx_control *control) | |
840 | { | |
841 | int hdrlen, iv_len, mic_len; | |
842 | struct ieee80211_tx_packet_data *pkt_data; | |
843 | ||
844 | pkt_data = (struct ieee80211_tx_packet_data *)skb->cb; | |
845 | pkt_data->ifindex = control->ifindex; | |
e8bf9649 JS |
846 | pkt_data->flags = 0; |
847 | if (control->flags & IEEE80211_TXCTL_REQ_TX_STATUS) | |
848 | pkt_data->flags |= IEEE80211_TXPD_REQ_TX_STATUS; | |
849 | if (control->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT) | |
850 | pkt_data->flags |= IEEE80211_TXPD_DO_NOT_ENCRYPT; | |
851 | if (control->flags & IEEE80211_TXCTL_REQUEUE) | |
852 | pkt_data->flags |= IEEE80211_TXPD_REQUEUE; | |
853 | if (control->type == IEEE80211_IF_TYPE_MGMT) | |
854 | pkt_data->flags |= IEEE80211_TXPD_MGMT_IFACE; | |
f0706e82 JB |
855 | pkt_data->queue = control->queue; |
856 | ||
857 | hdrlen = ieee80211_get_hdrlen_from_skb(skb); | |
858 | ||
859 | if (!key) | |
860 | goto no_key; | |
861 | ||
8f20fc24 | 862 | switch (key->conf.alg) { |
f0706e82 JB |
863 | case ALG_WEP: |
864 | iv_len = WEP_IV_LEN; | |
865 | mic_len = WEP_ICV_LEN; | |
866 | break; | |
867 | case ALG_TKIP: | |
868 | iv_len = TKIP_IV_LEN; | |
869 | mic_len = TKIP_ICV_LEN; | |
870 | break; | |
871 | case ALG_CCMP: | |
872 | iv_len = CCMP_HDR_LEN; | |
873 | mic_len = CCMP_MIC_LEN; | |
874 | break; | |
875 | default: | |
876 | goto no_key; | |
877 | } | |
878 | ||
8f20fc24 | 879 | if (skb->len >= mic_len && |
11a843b7 | 880 | !(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)) |
f0706e82 JB |
881 | skb_trim(skb, skb->len - mic_len); |
882 | if (skb->len >= iv_len && skb->len > hdrlen) { | |
883 | memmove(skb->data + iv_len, skb->data, hdrlen); | |
884 | skb_pull(skb, iv_len); | |
885 | } | |
886 | ||
887 | no_key: | |
888 | { | |
889 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; | |
890 | u16 fc = le16_to_cpu(hdr->frame_control); | |
891 | if ((fc & 0x8C) == 0x88) /* QoS Control Field */ { | |
892 | fc &= ~IEEE80211_STYPE_QOS_DATA; | |
893 | hdr->frame_control = cpu_to_le16(fc); | |
894 | memmove(skb->data + 2, skb->data, hdrlen - 2); | |
895 | skb_pull(skb, 2); | |
896 | } | |
897 | } | |
898 | } | |
899 | ||
f0706e82 JB |
900 | void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb, |
901 | struct ieee80211_tx_status *status) | |
902 | { | |
903 | struct sk_buff *skb2; | |
904 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; | |
905 | struct ieee80211_local *local = hw_to_local(hw); | |
906 | u16 frag, type; | |
907 | u32 msg_type; | |
b306f453 JB |
908 | struct ieee80211_tx_status_rtap_hdr *rthdr; |
909 | struct ieee80211_sub_if_data *sdata; | |
910 | int monitors; | |
f0706e82 JB |
911 | |
912 | if (!status) { | |
913 | printk(KERN_ERR | |
914 | "%s: ieee80211_tx_status called with NULL status\n", | |
dd1cd4c6 | 915 | wiphy_name(local->hw.wiphy)); |
f0706e82 JB |
916 | dev_kfree_skb(skb); |
917 | return; | |
918 | } | |
919 | ||
920 | if (status->excessive_retries) { | |
921 | struct sta_info *sta; | |
922 | sta = sta_info_get(local, hdr->addr1); | |
923 | if (sta) { | |
924 | if (sta->flags & WLAN_STA_PS) { | |
925 | /* The STA is in power save mode, so assume | |
926 | * that this TX packet failed because of that. | |
927 | */ | |
928 | status->excessive_retries = 0; | |
929 | status->flags |= IEEE80211_TX_STATUS_TX_FILTERED; | |
930 | } | |
931 | sta_info_put(sta); | |
932 | } | |
933 | } | |
934 | ||
935 | if (status->flags & IEEE80211_TX_STATUS_TX_FILTERED) { | |
936 | struct sta_info *sta; | |
937 | sta = sta_info_get(local, hdr->addr1); | |
938 | if (sta) { | |
939 | sta->tx_filtered_count++; | |
940 | ||
941 | /* Clear the TX filter mask for this STA when sending | |
942 | * the next packet. If the STA went to power save mode, | |
943 | * this will happen when it is waking up for the next | |
944 | * time. */ | |
945 | sta->clear_dst_mask = 1; | |
946 | ||
947 | /* TODO: Is the WLAN_STA_PS flag always set here or is | |
948 | * the race between RX and TX status causing some | |
949 | * packets to be filtered out before 80211.o gets an | |
950 | * update for PS status? This seems to be the case, so | |
951 | * no changes are likely to be needed. */ | |
952 | if (sta->flags & WLAN_STA_PS && | |
953 | skb_queue_len(&sta->tx_filtered) < | |
954 | STA_MAX_TX_BUFFER) { | |
955 | ieee80211_remove_tx_extra(local, sta->key, | |
956 | skb, | |
957 | &status->control); | |
958 | skb_queue_tail(&sta->tx_filtered, skb); | |
959 | } else if (!(sta->flags & WLAN_STA_PS) && | |
960 | !(status->control.flags & IEEE80211_TXCTL_REQUEUE)) { | |
961 | /* Software retry the packet once */ | |
962 | status->control.flags |= IEEE80211_TXCTL_REQUEUE; | |
963 | ieee80211_remove_tx_extra(local, sta->key, | |
964 | skb, | |
965 | &status->control); | |
966 | dev_queue_xmit(skb); | |
967 | } else { | |
968 | if (net_ratelimit()) { | |
969 | printk(KERN_DEBUG "%s: dropped TX " | |
970 | "filtered frame queue_len=%d " | |
971 | "PS=%d @%lu\n", | |
dd1cd4c6 | 972 | wiphy_name(local->hw.wiphy), |
f0706e82 JB |
973 | skb_queue_len( |
974 | &sta->tx_filtered), | |
975 | !!(sta->flags & WLAN_STA_PS), | |
976 | jiffies); | |
977 | } | |
978 | dev_kfree_skb(skb); | |
979 | } | |
980 | sta_info_put(sta); | |
981 | return; | |
982 | } | |
983 | } else { | |
984 | /* FIXME: STUPID to call this with both local and local->mdev */ | |
985 | rate_control_tx_status(local, local->mdev, skb, status); | |
986 | } | |
987 | ||
988 | ieee80211_led_tx(local, 0); | |
989 | ||
990 | /* SNMP counters | |
991 | * Fragments are passed to low-level drivers as separate skbs, so these | |
992 | * are actually fragments, not frames. Update frame counters only for | |
993 | * the first fragment of the frame. */ | |
994 | ||
995 | frag = le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_FRAG; | |
996 | type = le16_to_cpu(hdr->frame_control) & IEEE80211_FCTL_FTYPE; | |
997 | ||
998 | if (status->flags & IEEE80211_TX_STATUS_ACK) { | |
999 | if (frag == 0) { | |
1000 | local->dot11TransmittedFrameCount++; | |
1001 | if (is_multicast_ether_addr(hdr->addr1)) | |
1002 | local->dot11MulticastTransmittedFrameCount++; | |
1003 | if (status->retry_count > 0) | |
1004 | local->dot11RetryCount++; | |
1005 | if (status->retry_count > 1) | |
1006 | local->dot11MultipleRetryCount++; | |
1007 | } | |
1008 | ||
1009 | /* This counter shall be incremented for an acknowledged MPDU | |
1010 | * with an individual address in the address 1 field or an MPDU | |
1011 | * with a multicast address in the address 1 field of type Data | |
1012 | * or Management. */ | |
1013 | if (!is_multicast_ether_addr(hdr->addr1) || | |
1014 | type == IEEE80211_FTYPE_DATA || | |
1015 | type == IEEE80211_FTYPE_MGMT) | |
1016 | local->dot11TransmittedFragmentCount++; | |
1017 | } else { | |
1018 | if (frag == 0) | |
1019 | local->dot11FailedCount++; | |
1020 | } | |
1021 | ||
b306f453 JB |
1022 | msg_type = (status->flags & IEEE80211_TX_STATUS_ACK) ? |
1023 | ieee80211_msg_tx_callback_ack : ieee80211_msg_tx_callback_fail; | |
1024 | ||
1025 | /* this was a transmitted frame, but now we want to reuse it */ | |
1026 | skb_orphan(skb); | |
1027 | ||
1028 | if ((status->control.flags & IEEE80211_TXCTL_REQ_TX_STATUS) && | |
1029 | local->apdev) { | |
1030 | if (local->monitors) { | |
1031 | skb2 = skb_clone(skb, GFP_ATOMIC); | |
1032 | } else { | |
1033 | skb2 = skb; | |
1034 | skb = NULL; | |
1035 | } | |
1036 | ||
1037 | if (skb2) | |
1038 | /* Send frame to hostapd */ | |
1039 | ieee80211_rx_mgmt(local, skb2, NULL, msg_type); | |
1040 | ||
1041 | if (!skb) | |
1042 | return; | |
1043 | } | |
1044 | ||
1045 | if (!local->monitors) { | |
f0706e82 JB |
1046 | dev_kfree_skb(skb); |
1047 | return; | |
1048 | } | |
1049 | ||
b306f453 | 1050 | /* send frame to monitor interfaces now */ |
f0706e82 | 1051 | |
b306f453 JB |
1052 | if (skb_headroom(skb) < sizeof(*rthdr)) { |
1053 | printk(KERN_ERR "ieee80211_tx_status: headroom too small\n"); | |
f0706e82 JB |
1054 | dev_kfree_skb(skb); |
1055 | return; | |
1056 | } | |
f0706e82 | 1057 | |
b306f453 JB |
1058 | rthdr = (struct ieee80211_tx_status_rtap_hdr*) |
1059 | skb_push(skb, sizeof(*rthdr)); | |
1060 | ||
1061 | memset(rthdr, 0, sizeof(*rthdr)); | |
1062 | rthdr->hdr.it_len = cpu_to_le16(sizeof(*rthdr)); | |
1063 | rthdr->hdr.it_present = | |
1064 | cpu_to_le32((1 << IEEE80211_RADIOTAP_TX_FLAGS) | | |
1065 | (1 << IEEE80211_RADIOTAP_DATA_RETRIES)); | |
1066 | ||
1067 | if (!(status->flags & IEEE80211_TX_STATUS_ACK) && | |
1068 | !is_multicast_ether_addr(hdr->addr1)) | |
1069 | rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_FAIL); | |
1070 | ||
1071 | if ((status->control.flags & IEEE80211_TXCTL_USE_RTS_CTS) && | |
1072 | (status->control.flags & IEEE80211_TXCTL_USE_CTS_PROTECT)) | |
1073 | rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_CTS); | |
1074 | else if (status->control.flags & IEEE80211_TXCTL_USE_RTS_CTS) | |
1075 | rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_RTS); | |
1076 | ||
1077 | rthdr->data_retries = status->retry_count; | |
1078 | ||
1079 | read_lock(&local->sub_if_lock); | |
1080 | monitors = local->monitors; | |
1081 | list_for_each_entry(sdata, &local->sub_if_list, list) { | |
1082 | /* | |
1083 | * Using the monitors counter is possibly racy, but | |
1084 | * if the value is wrong we simply either clone the skb | |
1085 | * once too much or forget sending it to one monitor iface | |
1086 | * The latter case isn't nice but fixing the race is much | |
1087 | * more complicated. | |
1088 | */ | |
1089 | if (!monitors || !skb) | |
1090 | goto out; | |
1091 | ||
1092 | if (sdata->type == IEEE80211_IF_TYPE_MNTR) { | |
1093 | if (!netif_running(sdata->dev)) | |
1094 | continue; | |
1095 | monitors--; | |
1096 | if (monitors) | |
1097 | skb2 = skb_clone(skb, GFP_KERNEL); | |
1098 | else | |
1099 | skb2 = NULL; | |
1100 | skb->dev = sdata->dev; | |
1101 | /* XXX: is this sufficient for BPF? */ | |
1102 | skb_set_mac_header(skb, 0); | |
1103 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
1104 | skb->pkt_type = PACKET_OTHERHOST; | |
1105 | skb->protocol = htons(ETH_P_802_2); | |
1106 | memset(skb->cb, 0, sizeof(skb->cb)); | |
1107 | netif_rx(skb); | |
1108 | skb = skb2; | |
b306f453 JB |
1109 | } |
1110 | } | |
1111 | out: | |
1112 | read_unlock(&local->sub_if_lock); | |
1113 | if (skb) | |
1114 | dev_kfree_skb(skb); | |
f0706e82 JB |
1115 | } |
1116 | EXPORT_SYMBOL(ieee80211_tx_status); | |
1117 | ||
f0706e82 JB |
1118 | struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len, |
1119 | const struct ieee80211_ops *ops) | |
1120 | { | |
1121 | struct net_device *mdev; | |
1122 | struct ieee80211_local *local; | |
1123 | struct ieee80211_sub_if_data *sdata; | |
1124 | int priv_size; | |
1125 | struct wiphy *wiphy; | |
1126 | ||
1127 | /* Ensure 32-byte alignment of our private data and hw private data. | |
1128 | * We use the wiphy priv data for both our ieee80211_local and for | |
1129 | * the driver's private data | |
1130 | * | |
1131 | * In memory it'll be like this: | |
1132 | * | |
1133 | * +-------------------------+ | |
1134 | * | struct wiphy | | |
1135 | * +-------------------------+ | |
1136 | * | struct ieee80211_local | | |
1137 | * +-------------------------+ | |
1138 | * | driver's private data | | |
1139 | * +-------------------------+ | |
1140 | * | |
1141 | */ | |
1142 | priv_size = ((sizeof(struct ieee80211_local) + | |
1143 | NETDEV_ALIGN_CONST) & ~NETDEV_ALIGN_CONST) + | |
1144 | priv_data_len; | |
1145 | ||
1146 | wiphy = wiphy_new(&mac80211_config_ops, priv_size); | |
1147 | ||
1148 | if (!wiphy) | |
1149 | return NULL; | |
1150 | ||
1151 | wiphy->privid = mac80211_wiphy_privid; | |
1152 | ||
1153 | local = wiphy_priv(wiphy); | |
1154 | local->hw.wiphy = wiphy; | |
1155 | ||
1156 | local->hw.priv = (char *)local + | |
1157 | ((sizeof(struct ieee80211_local) + | |
1158 | NETDEV_ALIGN_CONST) & ~NETDEV_ALIGN_CONST); | |
1159 | ||
4480f15c JB |
1160 | BUG_ON(!ops->tx); |
1161 | BUG_ON(!ops->config); | |
1162 | BUG_ON(!ops->add_interface); | |
f0706e82 JB |
1163 | local->ops = ops; |
1164 | ||
1165 | /* for now, mdev needs sub_if_data :/ */ | |
1166 | mdev = alloc_netdev(sizeof(struct ieee80211_sub_if_data), | |
1167 | "wmaster%d", ether_setup); | |
1168 | if (!mdev) { | |
1169 | wiphy_free(wiphy); | |
1170 | return NULL; | |
1171 | } | |
1172 | ||
1173 | sdata = IEEE80211_DEV_TO_SUB_IF(mdev); | |
1174 | mdev->ieee80211_ptr = &sdata->wdev; | |
1175 | sdata->wdev.wiphy = wiphy; | |
1176 | ||
1177 | local->hw.queues = 1; /* default */ | |
1178 | ||
1179 | local->mdev = mdev; | |
1180 | local->rx_pre_handlers = ieee80211_rx_pre_handlers; | |
1181 | local->rx_handlers = ieee80211_rx_handlers; | |
1182 | local->tx_handlers = ieee80211_tx_handlers; | |
1183 | ||
1184 | local->bridge_packets = 1; | |
1185 | ||
1186 | local->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD; | |
1187 | local->fragmentation_threshold = IEEE80211_MAX_FRAG_THRESHOLD; | |
1188 | local->short_retry_limit = 7; | |
1189 | local->long_retry_limit = 4; | |
1190 | local->hw.conf.radio_enabled = 1; | |
f0706e82 | 1191 | |
b708e610 | 1192 | local->enabled_modes = ~0; |
f0706e82 JB |
1193 | |
1194 | INIT_LIST_HEAD(&local->modes_list); | |
1195 | ||
1196 | rwlock_init(&local->sub_if_lock); | |
1197 | INIT_LIST_HEAD(&local->sub_if_list); | |
1198 | ||
1199 | INIT_DELAYED_WORK(&local->scan_work, ieee80211_sta_scan_work); | |
f0706e82 JB |
1200 | ieee80211_rx_bss_list_init(mdev); |
1201 | ||
1202 | sta_info_init(local); | |
1203 | ||
1204 | mdev->hard_start_xmit = ieee80211_master_start_xmit; | |
1205 | mdev->open = ieee80211_master_open; | |
1206 | mdev->stop = ieee80211_master_stop; | |
1207 | mdev->type = ARPHRD_IEEE80211; | |
3b04ddde | 1208 | mdev->header_ops = &ieee80211_header_ops; |
f0706e82 JB |
1209 | |
1210 | sdata->type = IEEE80211_IF_TYPE_AP; | |
1211 | sdata->dev = mdev; | |
1212 | sdata->local = local; | |
1213 | sdata->u.ap.force_unicast_rateidx = -1; | |
1214 | sdata->u.ap.max_ratectrl_rateidx = -1; | |
1215 | ieee80211_if_sdata_init(sdata); | |
1216 | list_add_tail(&sdata->list, &local->sub_if_list); | |
1217 | ||
1218 | tasklet_init(&local->tx_pending_tasklet, ieee80211_tx_pending, | |
1219 | (unsigned long)local); | |
1220 | tasklet_disable(&local->tx_pending_tasklet); | |
1221 | ||
1222 | tasklet_init(&local->tasklet, | |
1223 | ieee80211_tasklet_handler, | |
1224 | (unsigned long) local); | |
1225 | tasklet_disable(&local->tasklet); | |
1226 | ||
1227 | skb_queue_head_init(&local->skb_queue); | |
1228 | skb_queue_head_init(&local->skb_queue_unreliable); | |
1229 | ||
1230 | return local_to_hw(local); | |
1231 | } | |
1232 | EXPORT_SYMBOL(ieee80211_alloc_hw); | |
1233 | ||
1234 | int ieee80211_register_hw(struct ieee80211_hw *hw) | |
1235 | { | |
1236 | struct ieee80211_local *local = hw_to_local(hw); | |
1237 | const char *name; | |
1238 | int result; | |
1239 | ||
1240 | result = wiphy_register(local->hw.wiphy); | |
1241 | if (result < 0) | |
1242 | return result; | |
1243 | ||
1244 | name = wiphy_dev(local->hw.wiphy)->driver->name; | |
1245 | local->hw.workqueue = create_singlethread_workqueue(name); | |
1246 | if (!local->hw.workqueue) { | |
1247 | result = -ENOMEM; | |
1248 | goto fail_workqueue; | |
1249 | } | |
1250 | ||
b306f453 JB |
1251 | /* |
1252 | * The hardware needs headroom for sending the frame, | |
1253 | * and we need some headroom for passing the frame to monitor | |
1254 | * interfaces, but never both at the same time. | |
1255 | */ | |
33ccad35 JB |
1256 | local->tx_headroom = max_t(unsigned int , local->hw.extra_tx_headroom, |
1257 | sizeof(struct ieee80211_tx_status_rtap_hdr)); | |
b306f453 | 1258 | |
e9f207f0 JB |
1259 | debugfs_hw_add(local); |
1260 | ||
f0706e82 JB |
1261 | local->hw.conf.beacon_int = 1000; |
1262 | ||
1263 | local->wstats_flags |= local->hw.max_rssi ? | |
1264 | IW_QUAL_LEVEL_UPDATED : IW_QUAL_LEVEL_INVALID; | |
1265 | local->wstats_flags |= local->hw.max_signal ? | |
1266 | IW_QUAL_QUAL_UPDATED : IW_QUAL_QUAL_INVALID; | |
1267 | local->wstats_flags |= local->hw.max_noise ? | |
1268 | IW_QUAL_NOISE_UPDATED : IW_QUAL_NOISE_INVALID; | |
1269 | if (local->hw.max_rssi < 0 || local->hw.max_noise < 0) | |
1270 | local->wstats_flags |= IW_QUAL_DBM; | |
1271 | ||
1272 | result = sta_info_start(local); | |
1273 | if (result < 0) | |
1274 | goto fail_sta_info; | |
1275 | ||
1276 | rtnl_lock(); | |
1277 | result = dev_alloc_name(local->mdev, local->mdev->name); | |
1278 | if (result < 0) | |
1279 | goto fail_dev; | |
1280 | ||
1281 | memcpy(local->mdev->dev_addr, local->hw.wiphy->perm_addr, ETH_ALEN); | |
1282 | SET_NETDEV_DEV(local->mdev, wiphy_dev(local->hw.wiphy)); | |
1283 | ||
1284 | result = register_netdevice(local->mdev); | |
1285 | if (result < 0) | |
1286 | goto fail_dev; | |
1287 | ||
e9f207f0 JB |
1288 | ieee80211_debugfs_add_netdev(IEEE80211_DEV_TO_SUB_IF(local->mdev)); |
1289 | ||
f0706e82 JB |
1290 | result = ieee80211_init_rate_ctrl_alg(local, NULL); |
1291 | if (result < 0) { | |
1292 | printk(KERN_DEBUG "%s: Failed to initialize rate control " | |
dd1cd4c6 | 1293 | "algorithm\n", wiphy_name(local->hw.wiphy)); |
f0706e82 JB |
1294 | goto fail_rate; |
1295 | } | |
1296 | ||
1297 | result = ieee80211_wep_init(local); | |
1298 | ||
1299 | if (result < 0) { | |
1300 | printk(KERN_DEBUG "%s: Failed to initialize wep\n", | |
dd1cd4c6 | 1301 | wiphy_name(local->hw.wiphy)); |
f0706e82 JB |
1302 | goto fail_wep; |
1303 | } | |
1304 | ||
1305 | ieee80211_install_qdisc(local->mdev); | |
1306 | ||
1307 | /* add one default STA interface */ | |
1308 | result = ieee80211_if_add(local->mdev, "wlan%d", NULL, | |
1309 | IEEE80211_IF_TYPE_STA); | |
1310 | if (result) | |
1311 | printk(KERN_WARNING "%s: Failed to add default virtual iface\n", | |
dd1cd4c6 | 1312 | wiphy_name(local->hw.wiphy)); |
f0706e82 JB |
1313 | |
1314 | local->reg_state = IEEE80211_DEV_REGISTERED; | |
1315 | rtnl_unlock(); | |
1316 | ||
1317 | ieee80211_led_init(local); | |
1318 | ||
1319 | return 0; | |
1320 | ||
1321 | fail_wep: | |
1322 | rate_control_deinitialize(local); | |
1323 | fail_rate: | |
e9f207f0 | 1324 | ieee80211_debugfs_remove_netdev(IEEE80211_DEV_TO_SUB_IF(local->mdev)); |
f0706e82 JB |
1325 | unregister_netdevice(local->mdev); |
1326 | fail_dev: | |
1327 | rtnl_unlock(); | |
1328 | sta_info_stop(local); | |
1329 | fail_sta_info: | |
e9f207f0 | 1330 | debugfs_hw_del(local); |
f0706e82 JB |
1331 | destroy_workqueue(local->hw.workqueue); |
1332 | fail_workqueue: | |
1333 | wiphy_unregister(local->hw.wiphy); | |
1334 | return result; | |
1335 | } | |
1336 | EXPORT_SYMBOL(ieee80211_register_hw); | |
1337 | ||
1338 | int ieee80211_register_hwmode(struct ieee80211_hw *hw, | |
1339 | struct ieee80211_hw_mode *mode) | |
1340 | { | |
1341 | struct ieee80211_local *local = hw_to_local(hw); | |
1342 | struct ieee80211_rate *rate; | |
1343 | int i; | |
1344 | ||
1345 | INIT_LIST_HEAD(&mode->list); | |
1346 | list_add_tail(&mode->list, &local->modes_list); | |
1347 | ||
1348 | local->hw_modes |= (1 << mode->mode); | |
1349 | for (i = 0; i < mode->num_rates; i++) { | |
1350 | rate = &(mode->rates[i]); | |
1351 | rate->rate_inv = CHAN_UTIL_RATE_LCM / rate->rate; | |
1352 | } | |
1353 | ieee80211_prepare_rates(local, mode); | |
1354 | ||
1355 | if (!local->oper_hw_mode) { | |
1356 | /* Default to this mode */ | |
1357 | local->hw.conf.phymode = mode->mode; | |
1358 | local->oper_hw_mode = local->scan_hw_mode = mode; | |
1359 | local->oper_channel = local->scan_channel = &mode->channels[0]; | |
1360 | local->hw.conf.mode = local->oper_hw_mode; | |
1361 | local->hw.conf.chan = local->oper_channel; | |
1362 | } | |
1363 | ||
1364 | if (!(hw->flags & IEEE80211_HW_DEFAULT_REG_DOMAIN_CONFIGURED)) | |
fd8bacc9 | 1365 | ieee80211_set_default_regdomain(mode); |
f0706e82 JB |
1366 | |
1367 | return 0; | |
1368 | } | |
1369 | EXPORT_SYMBOL(ieee80211_register_hwmode); | |
1370 | ||
1371 | void ieee80211_unregister_hw(struct ieee80211_hw *hw) | |
1372 | { | |
1373 | struct ieee80211_local *local = hw_to_local(hw); | |
1374 | struct ieee80211_sub_if_data *sdata, *tmp; | |
1375 | struct list_head tmp_list; | |
1376 | int i; | |
1377 | ||
1378 | tasklet_kill(&local->tx_pending_tasklet); | |
1379 | tasklet_kill(&local->tasklet); | |
1380 | ||
1381 | rtnl_lock(); | |
1382 | ||
1383 | BUG_ON(local->reg_state != IEEE80211_DEV_REGISTERED); | |
1384 | ||
1385 | local->reg_state = IEEE80211_DEV_UNREGISTERED; | |
1386 | if (local->apdev) | |
1387 | ieee80211_if_del_mgmt(local); | |
1388 | ||
1389 | write_lock_bh(&local->sub_if_lock); | |
1390 | list_replace_init(&local->sub_if_list, &tmp_list); | |
1391 | write_unlock_bh(&local->sub_if_lock); | |
1392 | ||
1393 | list_for_each_entry_safe(sdata, tmp, &tmp_list, list) | |
1394 | __ieee80211_if_del(local, sdata); | |
1395 | ||
1396 | rtnl_unlock(); | |
1397 | ||
f0706e82 JB |
1398 | ieee80211_rx_bss_list_deinit(local->mdev); |
1399 | ieee80211_clear_tx_pending(local); | |
1400 | sta_info_stop(local); | |
1401 | rate_control_deinitialize(local); | |
e9f207f0 | 1402 | debugfs_hw_del(local); |
f0706e82 JB |
1403 | |
1404 | for (i = 0; i < NUM_IEEE80211_MODES; i++) { | |
1405 | kfree(local->supp_rates[i]); | |
1406 | kfree(local->basic_rates[i]); | |
1407 | } | |
1408 | ||
1409 | if (skb_queue_len(&local->skb_queue) | |
1410 | || skb_queue_len(&local->skb_queue_unreliable)) | |
1411 | printk(KERN_WARNING "%s: skb_queue not empty\n", | |
dd1cd4c6 | 1412 | wiphy_name(local->hw.wiphy)); |
f0706e82 JB |
1413 | skb_queue_purge(&local->skb_queue); |
1414 | skb_queue_purge(&local->skb_queue_unreliable); | |
1415 | ||
1416 | destroy_workqueue(local->hw.workqueue); | |
1417 | wiphy_unregister(local->hw.wiphy); | |
1418 | ieee80211_wep_free(local); | |
1419 | ieee80211_led_exit(local); | |
1420 | } | |
1421 | EXPORT_SYMBOL(ieee80211_unregister_hw); | |
1422 | ||
1423 | void ieee80211_free_hw(struct ieee80211_hw *hw) | |
1424 | { | |
1425 | struct ieee80211_local *local = hw_to_local(hw); | |
1426 | ||
1427 | ieee80211_if_free(local->mdev); | |
1428 | wiphy_free(local->hw.wiphy); | |
1429 | } | |
1430 | EXPORT_SYMBOL(ieee80211_free_hw); | |
1431 | ||
f0706e82 JB |
1432 | static int __init ieee80211_init(void) |
1433 | { | |
1434 | struct sk_buff *skb; | |
1435 | int ret; | |
1436 | ||
1437 | BUILD_BUG_ON(sizeof(struct ieee80211_tx_packet_data) > sizeof(skb->cb)); | |
1438 | ||
1439 | ret = ieee80211_wme_register(); | |
1440 | if (ret) { | |
1441 | printk(KERN_DEBUG "ieee80211_init: failed to " | |
1442 | "initialize WME (err=%d)\n", ret); | |
1443 | return ret; | |
1444 | } | |
1445 | ||
e9f207f0 | 1446 | ieee80211_debugfs_netdev_init(); |
fd8bacc9 | 1447 | ieee80211_regdomain_init(); |
e9f207f0 | 1448 | |
f0706e82 JB |
1449 | return 0; |
1450 | } | |
1451 | ||
f0706e82 JB |
1452 | static void __exit ieee80211_exit(void) |
1453 | { | |
1454 | ieee80211_wme_unregister(); | |
e9f207f0 | 1455 | ieee80211_debugfs_netdev_exit(); |
f0706e82 JB |
1456 | } |
1457 | ||
1458 | ||
ca9938fe | 1459 | subsys_initcall(ieee80211_init); |
f0706e82 JB |
1460 | module_exit(ieee80211_exit); |
1461 | ||
1462 | MODULE_DESCRIPTION("IEEE 802.11 subsystem"); | |
1463 | MODULE_LICENSE("GPL"); |