Commit | Line | Data |
---|---|---|
f0706e82 JB |
1 | /* |
2 | * Copyright 2002-2005, Instant802 Networks, Inc. | |
3 | * Copyright 2005-2006, Devicescape Software, Inc. | |
4 | * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License version 2 as | |
8 | * published by the Free Software Foundation. | |
9 | */ | |
10 | ||
11 | #include <net/mac80211.h> | |
12 | #include <net/ieee80211_radiotap.h> | |
13 | #include <linux/module.h> | |
14 | #include <linux/init.h> | |
15 | #include <linux/netdevice.h> | |
16 | #include <linux/types.h> | |
17 | #include <linux/slab.h> | |
18 | #include <linux/skbuff.h> | |
19 | #include <linux/etherdevice.h> | |
20 | #include <linux/if_arp.h> | |
21 | #include <linux/wireless.h> | |
22 | #include <linux/rtnetlink.h> | |
f0706e82 | 23 | #include <linux/bitmap.h> |
881d966b | 24 | #include <net/net_namespace.h> |
f0706e82 JB |
25 | #include <net/cfg80211.h> |
26 | ||
f0706e82 | 27 | #include "ieee80211_i.h" |
2c8dccc7 | 28 | #include "rate.h" |
f7a92144 | 29 | #include "mesh.h" |
f0706e82 | 30 | #include "wep.h" |
f0706e82 JB |
31 | #include "wme.h" |
32 | #include "aes_ccm.h" | |
2c8dccc7 | 33 | #include "led.h" |
e0eb6859 | 34 | #include "cfg.h" |
e9f207f0 JB |
35 | #include "debugfs.h" |
36 | #include "debugfs_netdev.h" | |
f0706e82 | 37 | |
d3c990fb RR |
38 | #define SUPP_MCS_SET_LEN 16 |
39 | ||
b306f453 JB |
40 | /* |
41 | * For seeing transmitted packets on monitor interfaces | |
42 | * we have a radiotap header too. | |
43 | */ | |
44 | struct ieee80211_tx_status_rtap_hdr { | |
45 | struct ieee80211_radiotap_header hdr; | |
46 | __le16 tx_flags; | |
47 | u8 data_retries; | |
48 | } __attribute__ ((packed)); | |
49 | ||
b2c258fb | 50 | /* common interface routines */ |
b306f453 | 51 | |
b95cce35 | 52 | static int header_parse_80211(const struct sk_buff *skb, unsigned char *haddr) |
b2c258fb JB |
53 | { |
54 | memcpy(haddr, skb_mac_header(skb) + 10, ETH_ALEN); /* addr2 */ | |
55 | return ETH_ALEN; | |
56 | } | |
f0706e82 | 57 | |
4150c572 JB |
58 | /* must be called under mdev tx lock */ |
59 | static void ieee80211_configure_filter(struct ieee80211_local *local) | |
60 | { | |
61 | unsigned int changed_flags; | |
62 | unsigned int new_flags = 0; | |
63 | ||
53918994 | 64 | if (atomic_read(&local->iff_promiscs)) |
4150c572 JB |
65 | new_flags |= FIF_PROMISC_IN_BSS; |
66 | ||
53918994 | 67 | if (atomic_read(&local->iff_allmultis)) |
4150c572 JB |
68 | new_flags |= FIF_ALLMULTI; |
69 | ||
70 | if (local->monitors) | |
8cc9a739 MW |
71 | new_flags |= FIF_BCN_PRBRESP_PROMISC; |
72 | ||
73 | if (local->fif_fcsfail) | |
74 | new_flags |= FIF_FCSFAIL; | |
75 | ||
76 | if (local->fif_plcpfail) | |
77 | new_flags |= FIF_PLCPFAIL; | |
78 | ||
79 | if (local->fif_control) | |
80 | new_flags |= FIF_CONTROL; | |
81 | ||
82 | if (local->fif_other_bss) | |
83 | new_flags |= FIF_OTHER_BSS; | |
4150c572 JB |
84 | |
85 | changed_flags = local->filter_flags ^ new_flags; | |
86 | ||
87 | /* be a bit nasty */ | |
88 | new_flags |= (1<<31); | |
89 | ||
90 | local->ops->configure_filter(local_to_hw(local), | |
91 | changed_flags, &new_flags, | |
92 | local->mdev->mc_count, | |
93 | local->mdev->mc_list); | |
94 | ||
95 | WARN_ON(new_flags & (1<<31)); | |
96 | ||
97 | local->filter_flags = new_flags & ~(1<<31); | |
98 | } | |
99 | ||
b2c258fb | 100 | /* master interface */ |
f0706e82 | 101 | |
b2c258fb JB |
102 | static int ieee80211_master_open(struct net_device *dev) |
103 | { | |
104 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
105 | struct ieee80211_sub_if_data *sdata; | |
106 | int res = -EOPNOTSUPP; | |
f0706e82 | 107 | |
79010420 JB |
108 | /* we hold the RTNL here so can safely walk the list */ |
109 | list_for_each_entry(sdata, &local->interfaces, list) { | |
b2c258fb JB |
110 | if (sdata->dev != dev && netif_running(sdata->dev)) { |
111 | res = 0; | |
112 | break; | |
113 | } | |
114 | } | |
b2c258fb JB |
115 | return res; |
116 | } | |
f0706e82 | 117 | |
b2c258fb | 118 | static int ieee80211_master_stop(struct net_device *dev) |
f0706e82 | 119 | { |
b2c258fb JB |
120 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); |
121 | struct ieee80211_sub_if_data *sdata; | |
f0706e82 | 122 | |
79010420 JB |
123 | /* we hold the RTNL here so can safely walk the list */ |
124 | list_for_each_entry(sdata, &local->interfaces, list) | |
b2c258fb JB |
125 | if (sdata->dev != dev && netif_running(sdata->dev)) |
126 | dev_close(sdata->dev); | |
f0706e82 | 127 | |
b2c258fb JB |
128 | return 0; |
129 | } | |
f0706e82 | 130 | |
4150c572 JB |
131 | static void ieee80211_master_set_multicast_list(struct net_device *dev) |
132 | { | |
133 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
134 | ||
135 | ieee80211_configure_filter(local); | |
136 | } | |
137 | ||
b2c258fb | 138 | /* regular interfaces */ |
f0706e82 | 139 | |
b2c258fb | 140 | static int ieee80211_change_mtu(struct net_device *dev, int new_mtu) |
f0706e82 | 141 | { |
f7a92144 LCC |
142 | int meshhdrlen; |
143 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
144 | ||
145 | meshhdrlen = (sdata->vif.type == IEEE80211_IF_TYPE_MESH_POINT) ? 5 : 0; | |
146 | ||
b2c258fb JB |
147 | /* FIX: what would be proper limits for MTU? |
148 | * This interface uses 802.3 frames. */ | |
f7a92144 LCC |
149 | if (new_mtu < 256 || |
150 | new_mtu > IEEE80211_MAX_DATA_LEN - 24 - 6 - meshhdrlen) { | |
b2c258fb JB |
151 | printk(KERN_WARNING "%s: invalid MTU %d\n", |
152 | dev->name, new_mtu); | |
153 | return -EINVAL; | |
154 | } | |
f0706e82 | 155 | |
b2c258fb JB |
156 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
157 | printk(KERN_DEBUG "%s: setting MTU %d\n", dev->name, new_mtu); | |
158 | #endif /* CONFIG_MAC80211_VERBOSE_DEBUG */ | |
159 | dev->mtu = new_mtu; | |
f0706e82 JB |
160 | return 0; |
161 | } | |
162 | ||
b2c258fb JB |
163 | static inline int identical_mac_addr_allowed(int type1, int type2) |
164 | { | |
165 | return (type1 == IEEE80211_IF_TYPE_MNTR || | |
166 | type2 == IEEE80211_IF_TYPE_MNTR || | |
167 | (type1 == IEEE80211_IF_TYPE_AP && | |
168 | type2 == IEEE80211_IF_TYPE_WDS) || | |
169 | (type1 == IEEE80211_IF_TYPE_WDS && | |
170 | (type2 == IEEE80211_IF_TYPE_WDS || | |
171 | type2 == IEEE80211_IF_TYPE_AP)) || | |
172 | (type1 == IEEE80211_IF_TYPE_AP && | |
173 | type2 == IEEE80211_IF_TYPE_VLAN) || | |
174 | (type1 == IEEE80211_IF_TYPE_VLAN && | |
175 | (type2 == IEEE80211_IF_TYPE_AP || | |
176 | type2 == IEEE80211_IF_TYPE_VLAN))); | |
177 | } | |
f0706e82 | 178 | |
b2c258fb | 179 | static int ieee80211_open(struct net_device *dev) |
e2ebc74d | 180 | { |
b2c258fb JB |
181 | struct ieee80211_sub_if_data *sdata, *nsdata; |
182 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
183 | struct ieee80211_if_init_conf conf; | |
184 | int res; | |
ceffefd1 | 185 | bool need_hw_reconfig = 0; |
44213b5e | 186 | struct sta_info *sta; |
f0706e82 | 187 | |
b2c258fb | 188 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
0ec3ca44 | 189 | |
79010420 JB |
190 | /* we hold the RTNL here so can safely walk the list */ |
191 | list_for_each_entry(nsdata, &local->interfaces, list) { | |
b2c258fb | 192 | struct net_device *ndev = nsdata->dev; |
e2ebc74d | 193 | |
665e8aaf JB |
194 | if (ndev != dev && ndev != local->mdev && netif_running(ndev)) { |
195 | /* | |
196 | * Allow only a single IBSS interface to be up at any | |
197 | * time. This is restricted because beacon distribution | |
198 | * cannot work properly if both are in the same IBSS. | |
199 | * | |
200 | * To remove this restriction we'd have to disallow them | |
201 | * from setting the same SSID on different IBSS interfaces | |
202 | * belonging to the same hardware. Then, however, we're | |
203 | * faced with having to adopt two different TSF timers... | |
204 | */ | |
205 | if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS && | |
206 | nsdata->vif.type == IEEE80211_IF_TYPE_IBSS) | |
207 | return -EBUSY; | |
208 | ||
209 | /* | |
210 | * Disallow multiple IBSS/STA mode interfaces. | |
211 | * | |
212 | * This is a technical restriction, it is possible although | |
213 | * most likely not IEEE 802.11 compliant to have multiple | |
214 | * STAs with just a single hardware (the TSF timer will not | |
215 | * be adjusted properly.) | |
216 | * | |
217 | * However, because mac80211 uses the master device's BSS | |
218 | * information for each STA/IBSS interface, doing this will | |
219 | * currently corrupt that BSS information completely, unless, | |
220 | * a not very useful case, both STAs are associated to the | |
221 | * same BSS. | |
222 | * | |
223 | * To remove this restriction, the BSS information needs to | |
224 | * be embedded in the STA/IBSS mode sdata instead of using | |
225 | * the master device's BSS structure. | |
226 | */ | |
227 | if ((sdata->vif.type == IEEE80211_IF_TYPE_STA || | |
228 | sdata->vif.type == IEEE80211_IF_TYPE_IBSS) && | |
229 | (nsdata->vif.type == IEEE80211_IF_TYPE_STA || | |
230 | nsdata->vif.type == IEEE80211_IF_TYPE_IBSS)) | |
231 | return -EBUSY; | |
232 | ||
233 | /* | |
234 | * The remaining checks are only performed for interfaces | |
235 | * with the same MAC address. | |
236 | */ | |
237 | if (compare_ether_addr(dev->dev_addr, ndev->dev_addr)) | |
238 | continue; | |
239 | ||
0ec3ca44 JB |
240 | /* |
241 | * check whether it may have the same address | |
242 | */ | |
51fb61e7 JB |
243 | if (!identical_mac_addr_allowed(sdata->vif.type, |
244 | nsdata->vif.type)) | |
0ec3ca44 | 245 | return -ENOTUNIQ; |
0ec3ca44 JB |
246 | |
247 | /* | |
248 | * can only add VLANs to enabled APs | |
249 | */ | |
51fb61e7 | 250 | if (sdata->vif.type == IEEE80211_IF_TYPE_VLAN && |
665e8aaf | 251 | nsdata->vif.type == IEEE80211_IF_TYPE_AP) |
0ec3ca44 | 252 | sdata->u.vlan.ap = nsdata; |
b2c258fb JB |
253 | } |
254 | } | |
f0706e82 | 255 | |
51fb61e7 | 256 | switch (sdata->vif.type) { |
0ec3ca44 | 257 | case IEEE80211_IF_TYPE_WDS: |
e94e1068 | 258 | if (!is_valid_ether_addr(sdata->u.wds.remote_addr)) |
0ec3ca44 JB |
259 | return -ENOLINK; |
260 | break; | |
261 | case IEEE80211_IF_TYPE_VLAN: | |
262 | if (!sdata->u.vlan.ap) | |
263 | return -ENOLINK; | |
264 | break; | |
fb1c1cd6 | 265 | case IEEE80211_IF_TYPE_AP: |
fb1c1cd6 JB |
266 | case IEEE80211_IF_TYPE_STA: |
267 | case IEEE80211_IF_TYPE_MNTR: | |
268 | case IEEE80211_IF_TYPE_IBSS: | |
6032f934 | 269 | case IEEE80211_IF_TYPE_MESH_POINT: |
fb1c1cd6 JB |
270 | /* no special treatment */ |
271 | break; | |
a2897552 JB |
272 | case IEEE80211_IF_TYPE_INVALID: |
273 | /* cannot happen */ | |
274 | WARN_ON(1); | |
275 | break; | |
0ec3ca44 | 276 | } |
f0706e82 | 277 | |
b2c258fb JB |
278 | if (local->open_count == 0) { |
279 | res = 0; | |
4150c572 JB |
280 | if (local->ops->start) |
281 | res = local->ops->start(local_to_hw(local)); | |
282 | if (res) | |
b2c258fb | 283 | return res; |
ceffefd1 | 284 | need_hw_reconfig = 1; |
cdcb006f | 285 | ieee80211_led_radio(local, local->hw.conf.radio_enabled); |
b2c258fb | 286 | } |
f0706e82 | 287 | |
51fb61e7 | 288 | switch (sdata->vif.type) { |
0ec3ca44 JB |
289 | case IEEE80211_IF_TYPE_VLAN: |
290 | list_add(&sdata->u.vlan.list, &sdata->u.vlan.ap->u.ap.vlans); | |
291 | /* no need to tell driver */ | |
292 | break; | |
4150c572 | 293 | case IEEE80211_IF_TYPE_MNTR: |
3d30d949 MW |
294 | if (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES) { |
295 | local->cooked_mntrs++; | |
296 | break; | |
297 | } | |
298 | ||
4150c572 | 299 | /* must be before the call to ieee80211_configure_filter */ |
b2c258fb | 300 | local->monitors++; |
8cc9a739 | 301 | if (local->monitors == 1) |
4150c572 | 302 | local->hw.conf.flags |= IEEE80211_CONF_RADIOTAP; |
8cc9a739 MW |
303 | |
304 | if (sdata->u.mntr_flags & MONITOR_FLAG_FCSFAIL) | |
305 | local->fif_fcsfail++; | |
306 | if (sdata->u.mntr_flags & MONITOR_FLAG_PLCPFAIL) | |
307 | local->fif_plcpfail++; | |
308 | if (sdata->u.mntr_flags & MONITOR_FLAG_CONTROL) | |
309 | local->fif_control++; | |
310 | if (sdata->u.mntr_flags & MONITOR_FLAG_OTHER_BSS) | |
311 | local->fif_other_bss++; | |
312 | ||
313 | netif_tx_lock_bh(local->mdev); | |
314 | ieee80211_configure_filter(local); | |
315 | netif_tx_unlock_bh(local->mdev); | |
4150c572 JB |
316 | break; |
317 | case IEEE80211_IF_TYPE_STA: | |
318 | case IEEE80211_IF_TYPE_IBSS: | |
319 | sdata->u.sta.flags &= ~IEEE80211_STA_PREV_BSSID_SET; | |
320 | /* fall through */ | |
321 | default: | |
32bfd35d | 322 | conf.vif = &sdata->vif; |
51fb61e7 | 323 | conf.type = sdata->vif.type; |
4150c572 JB |
324 | conf.mac_addr = dev->dev_addr; |
325 | res = local->ops->add_interface(local_to_hw(local), &conf); | |
4150c572 | 326 | if (res) |
636c5d48 | 327 | goto err_stop; |
4150c572 | 328 | |
b2c258fb | 329 | ieee80211_if_config(dev); |
d9430a32 | 330 | ieee80211_reset_erp_info(dev); |
11a843b7 | 331 | ieee80211_enable_keys(sdata); |
4150c572 | 332 | |
51fb61e7 | 333 | if (sdata->vif.type == IEEE80211_IF_TYPE_STA && |
ddd3d2be | 334 | !(sdata->flags & IEEE80211_SDATA_USERSPACE_MLME)) |
4150c572 JB |
335 | netif_carrier_off(dev); |
336 | else | |
337 | netif_carrier_on(dev); | |
d9430a32 | 338 | } |
f0706e82 | 339 | |
636c5d48 JB |
340 | if (sdata->vif.type == IEEE80211_IF_TYPE_WDS) { |
341 | /* Create STA entry for the WDS peer */ | |
342 | sta = sta_info_alloc(sdata, sdata->u.wds.remote_addr, | |
343 | GFP_KERNEL); | |
344 | if (!sta) { | |
345 | res = -ENOMEM; | |
346 | goto err_del_interface; | |
347 | } | |
348 | ||
349 | sta->flags |= WLAN_STA_AUTHORIZED; | |
350 | ||
351 | res = sta_info_insert(sta); | |
352 | if (res) { | |
353 | /* STA has been freed */ | |
354 | goto err_del_interface; | |
355 | } | |
356 | } | |
357 | ||
4150c572 JB |
358 | if (local->open_count == 0) { |
359 | res = dev_open(local->mdev); | |
360 | WARN_ON(res); | |
636c5d48 JB |
361 | if (res) |
362 | goto err_del_interface; | |
4150c572 JB |
363 | tasklet_enable(&local->tx_pending_tasklet); |
364 | tasklet_enable(&local->tasklet); | |
365 | } | |
366 | ||
c1428b3f JB |
367 | /* |
368 | * set_multicast_list will be invoked by the networking core | |
369 | * which will check whether any increments here were done in | |
370 | * error and sync them down to the hardware as filter flags. | |
371 | */ | |
372 | if (sdata->flags & IEEE80211_SDATA_ALLMULTI) | |
373 | atomic_inc(&local->iff_allmultis); | |
374 | ||
375 | if (sdata->flags & IEEE80211_SDATA_PROMISC) | |
376 | atomic_inc(&local->iff_promiscs); | |
377 | ||
4150c572 | 378 | local->open_count++; |
ceffefd1 MB |
379 | if (need_hw_reconfig) |
380 | ieee80211_hw_config(local); | |
f0706e82 | 381 | |
64f851e4 JN |
382 | /* |
383 | * ieee80211_sta_work is disabled while network interface | |
384 | * is down. Therefore, some configuration changes may not | |
385 | * yet be effective. Trigger execution of ieee80211_sta_work | |
386 | * to fix this. | |
387 | */ | |
988c0f72 JB |
388 | if (sdata->vif.type == IEEE80211_IF_TYPE_STA || |
389 | sdata->vif.type == IEEE80211_IF_TYPE_IBSS) { | |
64f851e4 JN |
390 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; |
391 | queue_work(local->hw.workqueue, &ifsta->work); | |
392 | } | |
393 | ||
b2c258fb | 394 | netif_start_queue(dev); |
4150c572 | 395 | |
b2c258fb | 396 | return 0; |
636c5d48 JB |
397 | err_del_interface: |
398 | local->ops->remove_interface(local_to_hw(local), &conf); | |
399 | err_stop: | |
400 | if (!local->open_count && local->ops->stop) | |
401 | local->ops->stop(local_to_hw(local)); | |
402 | return res; | |
f0706e82 | 403 | } |
f0706e82 | 404 | |
4150c572 | 405 | static int ieee80211_stop(struct net_device *dev) |
f0706e82 | 406 | { |
44213b5e JB |
407 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
408 | struct ieee80211_local *local = sdata->local; | |
4150c572 | 409 | struct ieee80211_if_init_conf conf; |
07db2183 | 410 | struct sta_info *sta; |
4150c572 | 411 | |
44213b5e JB |
412 | /* |
413 | * Stop TX on this interface first. | |
414 | */ | |
415 | netif_stop_queue(dev); | |
4150c572 | 416 | |
44213b5e JB |
417 | /* |
418 | * Now delete all active aggregation sessions. | |
419 | */ | |
d0709a65 JB |
420 | rcu_read_lock(); |
421 | ||
422 | list_for_each_entry_rcu(sta, &local->sta_list, list) { | |
423 | if (sta->sdata == sdata) | |
85249e5f | 424 | ieee80211_sta_tear_down_BA_sessions(dev, sta->addr); |
07db2183 RR |
425 | } |
426 | ||
d0709a65 JB |
427 | rcu_read_unlock(); |
428 | ||
44213b5e JB |
429 | /* |
430 | * Remove all stations associated with this interface. | |
431 | * | |
432 | * This must be done before calling ops->remove_interface() | |
433 | * because otherwise we can later invoke ops->sta_notify() | |
434 | * whenever the STAs are removed, and that invalidates driver | |
435 | * assumptions about always getting a vif pointer that is valid | |
436 | * (because if we remove a STA after ops->remove_interface() | |
437 | * the driver will have removed the vif info already!) | |
438 | * | |
439 | * We could relax this and only unlink the stations from the | |
440 | * hash table and list but keep them on a per-sdata list that | |
441 | * will be inserted back again when the interface is brought | |
442 | * up again, but I don't currently see a use case for that, | |
443 | * except with WDS which gets a STA entry created when it is | |
444 | * brought up. | |
445 | */ | |
446 | sta_info_flush(local, sdata); | |
4150c572 | 447 | |
c1428b3f JB |
448 | /* |
449 | * Don't count this interface for promisc/allmulti while it | |
450 | * is down. dev_mc_unsync() will invoke set_multicast_list | |
451 | * on the master interface which will sync these down to the | |
452 | * hardware as filter flags. | |
453 | */ | |
454 | if (sdata->flags & IEEE80211_SDATA_ALLMULTI) | |
455 | atomic_dec(&local->iff_allmultis); | |
456 | ||
457 | if (sdata->flags & IEEE80211_SDATA_PROMISC) | |
458 | atomic_dec(&local->iff_promiscs); | |
459 | ||
4150c572 JB |
460 | dev_mc_unsync(local->mdev, dev); |
461 | ||
5dfdaf58 | 462 | /* APs need special treatment */ |
51fb61e7 | 463 | if (sdata->vif.type == IEEE80211_IF_TYPE_AP) { |
0ec3ca44 | 464 | struct ieee80211_sub_if_data *vlan, *tmp; |
5dfdaf58 | 465 | struct beacon_data *old_beacon = sdata->u.ap.beacon; |
0ec3ca44 | 466 | |
5dfdaf58 JB |
467 | /* remove beacon */ |
468 | rcu_assign_pointer(sdata->u.ap.beacon, NULL); | |
469 | synchronize_rcu(); | |
470 | kfree(old_beacon); | |
471 | ||
472 | /* down all dependent devices, that is VLANs */ | |
0ec3ca44 JB |
473 | list_for_each_entry_safe(vlan, tmp, &sdata->u.ap.vlans, |
474 | u.vlan.list) | |
475 | dev_close(vlan->dev); | |
476 | WARN_ON(!list_empty(&sdata->u.ap.vlans)); | |
477 | } | |
478 | ||
4150c572 | 479 | local->open_count--; |
f0706e82 | 480 | |
51fb61e7 | 481 | switch (sdata->vif.type) { |
0ec3ca44 JB |
482 | case IEEE80211_IF_TYPE_VLAN: |
483 | list_del(&sdata->u.vlan.list); | |
484 | sdata->u.vlan.ap = NULL; | |
485 | /* no need to tell driver */ | |
486 | break; | |
4150c572 | 487 | case IEEE80211_IF_TYPE_MNTR: |
3d30d949 MW |
488 | if (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES) { |
489 | local->cooked_mntrs--; | |
490 | break; | |
491 | } | |
492 | ||
4150c572 | 493 | local->monitors--; |
8cc9a739 | 494 | if (local->monitors == 0) |
8b393f1d | 495 | local->hw.conf.flags &= ~IEEE80211_CONF_RADIOTAP; |
8cc9a739 MW |
496 | |
497 | if (sdata->u.mntr_flags & MONITOR_FLAG_FCSFAIL) | |
498 | local->fif_fcsfail--; | |
499 | if (sdata->u.mntr_flags & MONITOR_FLAG_PLCPFAIL) | |
500 | local->fif_plcpfail--; | |
501 | if (sdata->u.mntr_flags & MONITOR_FLAG_CONTROL) | |
502 | local->fif_control--; | |
503 | if (sdata->u.mntr_flags & MONITOR_FLAG_OTHER_BSS) | |
504 | local->fif_other_bss--; | |
505 | ||
506 | netif_tx_lock_bh(local->mdev); | |
507 | ieee80211_configure_filter(local); | |
508 | netif_tx_unlock_bh(local->mdev); | |
4150c572 | 509 | break; |
f7a92144 | 510 | case IEEE80211_IF_TYPE_MESH_POINT: |
b2c258fb JB |
511 | case IEEE80211_IF_TYPE_STA: |
512 | case IEEE80211_IF_TYPE_IBSS: | |
513 | sdata->u.sta.state = IEEE80211_DISABLED; | |
514 | del_timer_sync(&sdata->u.sta.timer); | |
2a8a9a88 | 515 | /* |
79010420 JB |
516 | * When we get here, the interface is marked down. |
517 | * Call synchronize_rcu() to wait for the RX path | |
518 | * should it be using the interface and enqueuing | |
519 | * frames at this very time on another CPU. | |
2a8a9a88 | 520 | */ |
79010420 | 521 | synchronize_rcu(); |
b2c258fb | 522 | skb_queue_purge(&sdata->u.sta.skb_queue); |
2a8a9a88 | 523 | |
ece8eddd ZY |
524 | if (local->scan_dev == sdata->dev) { |
525 | if (!local->ops->hw_scan) { | |
526 | local->sta_sw_scanning = 0; | |
527 | cancel_delayed_work(&local->scan_work); | |
528 | } else | |
529 | local->sta_hw_scanning = 0; | |
b2c258fb | 530 | } |
ece8eddd | 531 | |
b2c258fb | 532 | flush_workqueue(local->hw.workqueue); |
a10605e5 ZY |
533 | |
534 | sdata->u.sta.flags &= ~IEEE80211_STA_PRIVACY_INVOKED; | |
535 | kfree(sdata->u.sta.extra_ie); | |
536 | sdata->u.sta.extra_ie = NULL; | |
537 | sdata->u.sta.extra_ie_len = 0; | |
4150c572 JB |
538 | /* fall through */ |
539 | default: | |
32bfd35d | 540 | conf.vif = &sdata->vif; |
51fb61e7 | 541 | conf.type = sdata->vif.type; |
4150c572 | 542 | conf.mac_addr = dev->dev_addr; |
11a843b7 JB |
543 | /* disable all keys for as long as this netdev is down */ |
544 | ieee80211_disable_keys(sdata); | |
4150c572 | 545 | local->ops->remove_interface(local_to_hw(local), &conf); |
f0706e82 JB |
546 | } |
547 | ||
b2c258fb JB |
548 | if (local->open_count == 0) { |
549 | if (netif_running(local->mdev)) | |
550 | dev_close(local->mdev); | |
4150c572 | 551 | |
b2c258fb JB |
552 | if (local->ops->stop) |
553 | local->ops->stop(local_to_hw(local)); | |
4150c572 | 554 | |
cdcb006f ID |
555 | ieee80211_led_radio(local, 0); |
556 | ||
b2c258fb JB |
557 | tasklet_disable(&local->tx_pending_tasklet); |
558 | tasklet_disable(&local->tasklet); | |
559 | } | |
b2c258fb | 560 | |
f0706e82 JB |
561 | return 0; |
562 | } | |
563 | ||
eadc8d9e RR |
564 | int ieee80211_start_tx_ba_session(struct ieee80211_hw *hw, u8 *ra, u16 tid) |
565 | { | |
566 | struct ieee80211_local *local = hw_to_local(hw); | |
567 | struct sta_info *sta; | |
568 | struct ieee80211_sub_if_data *sdata; | |
569 | u16 start_seq_num = 0; | |
570 | u8 *state; | |
571 | int ret; | |
572 | DECLARE_MAC_BUF(mac); | |
573 | ||
574 | if (tid >= STA_TID_NUM) | |
575 | return -EINVAL; | |
576 | ||
577 | #ifdef CONFIG_MAC80211_HT_DEBUG | |
578 | printk(KERN_DEBUG "Open BA session requested for %s tid %u\n", | |
579 | print_mac(mac, ra), tid); | |
580 | #endif /* CONFIG_MAC80211_HT_DEBUG */ | |
581 | ||
d0709a65 JB |
582 | rcu_read_lock(); |
583 | ||
eadc8d9e RR |
584 | sta = sta_info_get(local, ra); |
585 | if (!sta) { | |
586 | printk(KERN_DEBUG "Could not find the station\n"); | |
d0709a65 | 587 | rcu_read_unlock(); |
eadc8d9e RR |
588 | return -ENOENT; |
589 | } | |
590 | ||
591 | spin_lock_bh(&sta->ampdu_mlme.ampdu_tx); | |
592 | ||
593 | /* we have tried too many times, receiver does not want A-MPDU */ | |
cee24a3e | 594 | if (sta->ampdu_mlme.addba_req_num[tid] > HT_AGG_MAX_RETRIES) { |
eadc8d9e RR |
595 | ret = -EBUSY; |
596 | goto start_ba_exit; | |
597 | } | |
598 | ||
cee24a3e | 599 | state = &sta->ampdu_mlme.tid_state_tx[tid]; |
eadc8d9e RR |
600 | /* check if the TID is not in aggregation flow already */ |
601 | if (*state != HT_AGG_STATE_IDLE) { | |
602 | #ifdef CONFIG_MAC80211_HT_DEBUG | |
603 | printk(KERN_DEBUG "BA request denied - session is not " | |
604 | "idle on tid %u\n", tid); | |
605 | #endif /* CONFIG_MAC80211_HT_DEBUG */ | |
606 | ret = -EAGAIN; | |
607 | goto start_ba_exit; | |
608 | } | |
609 | ||
cee24a3e RR |
610 | /* prepare A-MPDU MLME for Tx aggregation */ |
611 | sta->ampdu_mlme.tid_tx[tid] = | |
612 | kmalloc(sizeof(struct tid_ampdu_tx), GFP_ATOMIC); | |
613 | if (!sta->ampdu_mlme.tid_tx[tid]) { | |
614 | if (net_ratelimit()) | |
615 | printk(KERN_ERR "allocate tx mlme to tid %d failed\n", | |
616 | tid); | |
617 | ret = -ENOMEM; | |
618 | goto start_ba_exit; | |
619 | } | |
620 | /* Tx timer */ | |
621 | sta->ampdu_mlme.tid_tx[tid]->addba_resp_timer.function = | |
622 | sta_addba_resp_timer_expired; | |
623 | sta->ampdu_mlme.tid_tx[tid]->addba_resp_timer.data = | |
624 | (unsigned long)&sta->timer_to_tid[tid]; | |
625 | init_timer(&sta->ampdu_mlme.tid_tx[tid]->addba_resp_timer); | |
626 | ||
eadc8d9e RR |
627 | /* ensure that TX flow won't interrupt us |
628 | * until the end of the call to requeue function */ | |
629 | spin_lock_bh(&local->mdev->queue_lock); | |
630 | ||
631 | /* create a new queue for this aggregation */ | |
9e723492 | 632 | ret = ieee80211_ht_agg_queue_add(local, sta, tid); |
eadc8d9e RR |
633 | |
634 | /* case no queue is available to aggregation | |
635 | * don't switch to aggregation */ | |
636 | if (ret) { | |
637 | #ifdef CONFIG_MAC80211_HT_DEBUG | |
cee24a3e | 638 | printk(KERN_DEBUG "BA request denied - queue unavailable for" |
eadc8d9e RR |
639 | " tid %d\n", tid); |
640 | #endif /* CONFIG_MAC80211_HT_DEBUG */ | |
cee24a3e | 641 | goto start_ba_err; |
eadc8d9e | 642 | } |
d0709a65 | 643 | sdata = sta->sdata; |
eadc8d9e RR |
644 | |
645 | /* Ok, the Addba frame hasn't been sent yet, but if the driver calls the | |
646 | * call back right away, it must see that the flow has begun */ | |
647 | *state |= HT_ADDBA_REQUESTED_MSK; | |
648 | ||
649 | if (local->ops->ampdu_action) | |
650 | ret = local->ops->ampdu_action(hw, IEEE80211_AMPDU_TX_START, | |
651 | ra, tid, &start_seq_num); | |
652 | ||
653 | if (ret) { | |
654 | /* No need to requeue the packets in the agg queue, since we | |
655 | * held the tx lock: no packet could be enqueued to the newly | |
656 | * allocated queue */ | |
9e723492 | 657 | ieee80211_ht_agg_queue_remove(local, sta, tid, 0); |
eadc8d9e | 658 | #ifdef CONFIG_MAC80211_HT_DEBUG |
cee24a3e RR |
659 | printk(KERN_DEBUG "BA request denied - HW unavailable for" |
660 | " tid %d\n", tid); | |
eadc8d9e | 661 | #endif /* CONFIG_MAC80211_HT_DEBUG */ |
eadc8d9e | 662 | *state = HT_AGG_STATE_IDLE; |
cee24a3e | 663 | goto start_ba_err; |
eadc8d9e RR |
664 | } |
665 | ||
666 | /* Will put all the packets in the new SW queue */ | |
9e723492 | 667 | ieee80211_requeue(local, ieee802_1d_to_ac[tid]); |
eadc8d9e RR |
668 | spin_unlock_bh(&local->mdev->queue_lock); |
669 | ||
eadc8d9e RR |
670 | /* send an addBA request */ |
671 | sta->ampdu_mlme.dialog_token_allocator++; | |
cee24a3e | 672 | sta->ampdu_mlme.tid_tx[tid]->dialog_token = |
eadc8d9e | 673 | sta->ampdu_mlme.dialog_token_allocator; |
cee24a3e | 674 | sta->ampdu_mlme.tid_tx[tid]->ssn = start_seq_num; |
eadc8d9e | 675 | |
d0709a65 | 676 | ieee80211_send_addba_request(sta->sdata->dev, ra, tid, |
cee24a3e RR |
677 | sta->ampdu_mlme.tid_tx[tid]->dialog_token, |
678 | sta->ampdu_mlme.tid_tx[tid]->ssn, | |
eadc8d9e RR |
679 | 0x40, 5000); |
680 | ||
681 | /* activate the timer for the recipient's addBA response */ | |
cee24a3e | 682 | sta->ampdu_mlme.tid_tx[tid]->addba_resp_timer.expires = |
eadc8d9e | 683 | jiffies + ADDBA_RESP_INTERVAL; |
cee24a3e | 684 | add_timer(&sta->ampdu_mlme.tid_tx[tid]->addba_resp_timer); |
eadc8d9e | 685 | printk(KERN_DEBUG "activated addBA response timer on tid %d\n", tid); |
cee24a3e | 686 | goto start_ba_exit; |
eadc8d9e | 687 | |
cee24a3e RR |
688 | start_ba_err: |
689 | kfree(sta->ampdu_mlme.tid_tx[tid]); | |
690 | sta->ampdu_mlme.tid_tx[tid] = NULL; | |
691 | spin_unlock_bh(&local->mdev->queue_lock); | |
692 | ret = -EBUSY; | |
eadc8d9e RR |
693 | start_ba_exit: |
694 | spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx); | |
d0709a65 | 695 | rcu_read_unlock(); |
eadc8d9e RR |
696 | return ret; |
697 | } | |
698 | EXPORT_SYMBOL(ieee80211_start_tx_ba_session); | |
699 | ||
700 | int ieee80211_stop_tx_ba_session(struct ieee80211_hw *hw, | |
701 | u8 *ra, u16 tid, | |
702 | enum ieee80211_back_parties initiator) | |
703 | { | |
704 | struct ieee80211_local *local = hw_to_local(hw); | |
705 | struct sta_info *sta; | |
706 | u8 *state; | |
707 | int ret = 0; | |
708 | DECLARE_MAC_BUF(mac); | |
709 | ||
710 | if (tid >= STA_TID_NUM) | |
711 | return -EINVAL; | |
712 | ||
d0709a65 | 713 | rcu_read_lock(); |
eadc8d9e | 714 | sta = sta_info_get(local, ra); |
d0709a65 JB |
715 | if (!sta) { |
716 | rcu_read_unlock(); | |
eadc8d9e | 717 | return -ENOENT; |
d0709a65 | 718 | } |
eadc8d9e RR |
719 | |
720 | /* check if the TID is in aggregation */ | |
cee24a3e | 721 | state = &sta->ampdu_mlme.tid_state_tx[tid]; |
eadc8d9e RR |
722 | spin_lock_bh(&sta->ampdu_mlme.ampdu_tx); |
723 | ||
724 | if (*state != HT_AGG_STATE_OPERATIONAL) { | |
eadc8d9e RR |
725 | ret = -ENOENT; |
726 | goto stop_BA_exit; | |
727 | } | |
728 | ||
513a1025 RR |
729 | #ifdef CONFIG_MAC80211_HT_DEBUG |
730 | printk(KERN_DEBUG "Tx BA session stop requested for %s tid %u\n", | |
731 | print_mac(mac, ra), tid); | |
732 | #endif /* CONFIG_MAC80211_HT_DEBUG */ | |
733 | ||
eadc8d9e RR |
734 | ieee80211_stop_queue(hw, sta->tid_to_tx_q[tid]); |
735 | ||
736 | *state = HT_AGG_STATE_REQ_STOP_BA_MSK | | |
737 | (initiator << HT_AGG_STATE_INITIATOR_SHIFT); | |
738 | ||
739 | if (local->ops->ampdu_action) | |
740 | ret = local->ops->ampdu_action(hw, IEEE80211_AMPDU_TX_STOP, | |
741 | ra, tid, NULL); | |
742 | ||
743 | /* case HW denied going back to legacy */ | |
744 | if (ret) { | |
745 | WARN_ON(ret != -EBUSY); | |
746 | *state = HT_AGG_STATE_OPERATIONAL; | |
747 | ieee80211_wake_queue(hw, sta->tid_to_tx_q[tid]); | |
748 | goto stop_BA_exit; | |
749 | } | |
750 | ||
751 | stop_BA_exit: | |
752 | spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx); | |
d0709a65 | 753 | rcu_read_unlock(); |
eadc8d9e RR |
754 | return ret; |
755 | } | |
756 | EXPORT_SYMBOL(ieee80211_stop_tx_ba_session); | |
757 | ||
758 | void ieee80211_start_tx_ba_cb(struct ieee80211_hw *hw, u8 *ra, u16 tid) | |
759 | { | |
760 | struct ieee80211_local *local = hw_to_local(hw); | |
761 | struct sta_info *sta; | |
762 | u8 *state; | |
763 | DECLARE_MAC_BUF(mac); | |
764 | ||
765 | if (tid >= STA_TID_NUM) { | |
766 | printk(KERN_DEBUG "Bad TID value: tid = %d (>= %d)\n", | |
767 | tid, STA_TID_NUM); | |
768 | return; | |
769 | } | |
770 | ||
d0709a65 | 771 | rcu_read_lock(); |
eadc8d9e RR |
772 | sta = sta_info_get(local, ra); |
773 | if (!sta) { | |
d0709a65 | 774 | rcu_read_unlock(); |
eadc8d9e RR |
775 | printk(KERN_DEBUG "Could not find station: %s\n", |
776 | print_mac(mac, ra)); | |
777 | return; | |
778 | } | |
779 | ||
cee24a3e | 780 | state = &sta->ampdu_mlme.tid_state_tx[tid]; |
eadc8d9e RR |
781 | spin_lock_bh(&sta->ampdu_mlme.ampdu_tx); |
782 | ||
783 | if (!(*state & HT_ADDBA_REQUESTED_MSK)) { | |
784 | printk(KERN_DEBUG "addBA was not requested yet, state is %d\n", | |
785 | *state); | |
786 | spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx); | |
d0709a65 | 787 | rcu_read_unlock(); |
eadc8d9e RR |
788 | return; |
789 | } | |
790 | ||
791 | WARN_ON_ONCE(*state & HT_ADDBA_DRV_READY_MSK); | |
792 | ||
793 | *state |= HT_ADDBA_DRV_READY_MSK; | |
794 | ||
795 | if (*state == HT_AGG_STATE_OPERATIONAL) { | |
796 | printk(KERN_DEBUG "Aggregation is on for tid %d \n", tid); | |
797 | ieee80211_wake_queue(hw, sta->tid_to_tx_q[tid]); | |
798 | } | |
799 | spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx); | |
d0709a65 | 800 | rcu_read_unlock(); |
eadc8d9e RR |
801 | } |
802 | EXPORT_SYMBOL(ieee80211_start_tx_ba_cb); | |
803 | ||
804 | void ieee80211_stop_tx_ba_cb(struct ieee80211_hw *hw, u8 *ra, u8 tid) | |
805 | { | |
806 | struct ieee80211_local *local = hw_to_local(hw); | |
807 | struct sta_info *sta; | |
808 | u8 *state; | |
809 | int agg_queue; | |
810 | DECLARE_MAC_BUF(mac); | |
811 | ||
812 | if (tid >= STA_TID_NUM) { | |
813 | printk(KERN_DEBUG "Bad TID value: tid = %d (>= %d)\n", | |
814 | tid, STA_TID_NUM); | |
815 | return; | |
816 | } | |
817 | ||
513a1025 RR |
818 | #ifdef CONFIG_MAC80211_HT_DEBUG |
819 | printk(KERN_DEBUG "Stopping Tx BA session for %s tid %d\n", | |
eadc8d9e | 820 | print_mac(mac, ra), tid); |
513a1025 | 821 | #endif /* CONFIG_MAC80211_HT_DEBUG */ |
eadc8d9e | 822 | |
d0709a65 | 823 | rcu_read_lock(); |
eadc8d9e RR |
824 | sta = sta_info_get(local, ra); |
825 | if (!sta) { | |
826 | printk(KERN_DEBUG "Could not find station: %s\n", | |
827 | print_mac(mac, ra)); | |
d0709a65 | 828 | rcu_read_unlock(); |
eadc8d9e RR |
829 | return; |
830 | } | |
cee24a3e | 831 | state = &sta->ampdu_mlme.tid_state_tx[tid]; |
eadc8d9e RR |
832 | |
833 | spin_lock_bh(&sta->ampdu_mlme.ampdu_tx); | |
834 | if ((*state & HT_AGG_STATE_REQ_STOP_BA_MSK) == 0) { | |
835 | printk(KERN_DEBUG "unexpected callback to A-MPDU stop\n"); | |
eadc8d9e | 836 | spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx); |
d0709a65 | 837 | rcu_read_unlock(); |
eadc8d9e RR |
838 | return; |
839 | } | |
840 | ||
841 | if (*state & HT_AGG_STATE_INITIATOR_MSK) | |
d0709a65 | 842 | ieee80211_send_delba(sta->sdata->dev, ra, tid, |
eadc8d9e RR |
843 | WLAN_BACK_INITIATOR, WLAN_REASON_QSTA_NOT_USE); |
844 | ||
845 | agg_queue = sta->tid_to_tx_q[tid]; | |
846 | ||
847 | /* avoid ordering issues: we are the only one that can modify | |
848 | * the content of the qdiscs */ | |
849 | spin_lock_bh(&local->mdev->queue_lock); | |
850 | /* remove the queue for this aggregation */ | |
9e723492 | 851 | ieee80211_ht_agg_queue_remove(local, sta, tid, 1); |
eadc8d9e RR |
852 | spin_unlock_bh(&local->mdev->queue_lock); |
853 | ||
854 | /* we just requeued the all the frames that were in the removed | |
855 | * queue, and since we might miss a softirq we do netif_schedule. | |
856 | * ieee80211_wake_queue is not used here as this queue is not | |
857 | * necessarily stopped */ | |
858 | netif_schedule(local->mdev); | |
859 | *state = HT_AGG_STATE_IDLE; | |
cee24a3e RR |
860 | sta->ampdu_mlme.addba_req_num[tid] = 0; |
861 | kfree(sta->ampdu_mlme.tid_tx[tid]); | |
862 | sta->ampdu_mlme.tid_tx[tid] = NULL; | |
eadc8d9e RR |
863 | spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx); |
864 | ||
d0709a65 | 865 | rcu_read_unlock(); |
eadc8d9e RR |
866 | } |
867 | EXPORT_SYMBOL(ieee80211_stop_tx_ba_cb); | |
868 | ||
869 | void ieee80211_start_tx_ba_cb_irqsafe(struct ieee80211_hw *hw, | |
870 | const u8 *ra, u16 tid) | |
871 | { | |
872 | struct ieee80211_local *local = hw_to_local(hw); | |
873 | struct ieee80211_ra_tid *ra_tid; | |
874 | struct sk_buff *skb = dev_alloc_skb(0); | |
875 | ||
876 | if (unlikely(!skb)) { | |
877 | if (net_ratelimit()) | |
878 | printk(KERN_WARNING "%s: Not enough memory, " | |
879 | "dropping start BA session", skb->dev->name); | |
880 | return; | |
881 | } | |
882 | ra_tid = (struct ieee80211_ra_tid *) &skb->cb; | |
883 | memcpy(&ra_tid->ra, ra, ETH_ALEN); | |
884 | ra_tid->tid = tid; | |
885 | ||
886 | skb->pkt_type = IEEE80211_ADDBA_MSG; | |
887 | skb_queue_tail(&local->skb_queue, skb); | |
888 | tasklet_schedule(&local->tasklet); | |
889 | } | |
890 | EXPORT_SYMBOL(ieee80211_start_tx_ba_cb_irqsafe); | |
891 | ||
892 | void ieee80211_stop_tx_ba_cb_irqsafe(struct ieee80211_hw *hw, | |
893 | const u8 *ra, u16 tid) | |
894 | { | |
895 | struct ieee80211_local *local = hw_to_local(hw); | |
896 | struct ieee80211_ra_tid *ra_tid; | |
897 | struct sk_buff *skb = dev_alloc_skb(0); | |
898 | ||
899 | if (unlikely(!skb)) { | |
900 | if (net_ratelimit()) | |
901 | printk(KERN_WARNING "%s: Not enough memory, " | |
902 | "dropping stop BA session", skb->dev->name); | |
903 | return; | |
904 | } | |
905 | ra_tid = (struct ieee80211_ra_tid *) &skb->cb; | |
906 | memcpy(&ra_tid->ra, ra, ETH_ALEN); | |
907 | ra_tid->tid = tid; | |
908 | ||
909 | skb->pkt_type = IEEE80211_DELBA_MSG; | |
910 | skb_queue_tail(&local->skb_queue, skb); | |
911 | tasklet_schedule(&local->tasklet); | |
912 | } | |
913 | EXPORT_SYMBOL(ieee80211_stop_tx_ba_cb_irqsafe); | |
914 | ||
f0706e82 JB |
915 | static void ieee80211_set_multicast_list(struct net_device *dev) |
916 | { | |
917 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
918 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
4150c572 | 919 | int allmulti, promisc, sdata_allmulti, sdata_promisc; |
f0706e82 | 920 | |
4150c572 JB |
921 | allmulti = !!(dev->flags & IFF_ALLMULTI); |
922 | promisc = !!(dev->flags & IFF_PROMISC); | |
b52f2198 JB |
923 | sdata_allmulti = !!(sdata->flags & IEEE80211_SDATA_ALLMULTI); |
924 | sdata_promisc = !!(sdata->flags & IEEE80211_SDATA_PROMISC); | |
4150c572 JB |
925 | |
926 | if (allmulti != sdata_allmulti) { | |
927 | if (dev->flags & IFF_ALLMULTI) | |
53918994 | 928 | atomic_inc(&local->iff_allmultis); |
4150c572 | 929 | else |
53918994 | 930 | atomic_dec(&local->iff_allmultis); |
13262ffd | 931 | sdata->flags ^= IEEE80211_SDATA_ALLMULTI; |
f0706e82 | 932 | } |
4150c572 JB |
933 | |
934 | if (promisc != sdata_promisc) { | |
935 | if (dev->flags & IFF_PROMISC) | |
53918994 | 936 | atomic_inc(&local->iff_promiscs); |
4150c572 | 937 | else |
53918994 | 938 | atomic_dec(&local->iff_promiscs); |
13262ffd | 939 | sdata->flags ^= IEEE80211_SDATA_PROMISC; |
f0706e82 | 940 | } |
4150c572 JB |
941 | |
942 | dev_mc_sync(local->mdev, dev); | |
f0706e82 JB |
943 | } |
944 | ||
3b04ddde SH |
945 | static const struct header_ops ieee80211_header_ops = { |
946 | .create = eth_header, | |
947 | .parse = header_parse_80211, | |
948 | .rebuild = eth_rebuild_header, | |
949 | .cache = eth_header_cache, | |
950 | .cache_update = eth_header_cache_update, | |
951 | }; | |
952 | ||
f9d540ee | 953 | /* Must not be called for mdev */ |
b2c258fb | 954 | void ieee80211_if_setup(struct net_device *dev) |
f0706e82 | 955 | { |
b2c258fb JB |
956 | ether_setup(dev); |
957 | dev->hard_start_xmit = ieee80211_subif_start_xmit; | |
958 | dev->wireless_handlers = &ieee80211_iw_handler_def; | |
959 | dev->set_multicast_list = ieee80211_set_multicast_list; | |
960 | dev->change_mtu = ieee80211_change_mtu; | |
b2c258fb JB |
961 | dev->open = ieee80211_open; |
962 | dev->stop = ieee80211_stop; | |
b2c258fb JB |
963 | dev->destructor = ieee80211_if_free; |
964 | } | |
f0706e82 | 965 | |
b2c258fb JB |
966 | /* everything else */ |
967 | ||
b2c258fb JB |
968 | static int __ieee80211_if_config(struct net_device *dev, |
969 | struct sk_buff *beacon, | |
970 | struct ieee80211_tx_control *control) | |
971 | { | |
972 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
973 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
974 | struct ieee80211_if_conf conf; | |
b2c258fb JB |
975 | |
976 | if (!local->ops->config_interface || !netif_running(dev)) | |
f0706e82 | 977 | return 0; |
f0706e82 | 978 | |
b2c258fb | 979 | memset(&conf, 0, sizeof(conf)); |
51fb61e7 JB |
980 | conf.type = sdata->vif.type; |
981 | if (sdata->vif.type == IEEE80211_IF_TYPE_STA || | |
982 | sdata->vif.type == IEEE80211_IF_TYPE_IBSS) { | |
4150c572 | 983 | conf.bssid = sdata->u.sta.bssid; |
b2c258fb JB |
984 | conf.ssid = sdata->u.sta.ssid; |
985 | conf.ssid_len = sdata->u.sta.ssid_len; | |
902acc78 | 986 | } else if (ieee80211_vif_is_mesh(&sdata->vif)) { |
f7a92144 | 987 | conf.beacon = beacon; |
8b808bf2 | 988 | conf.beacon_control = control; |
f7a92144 | 989 | ieee80211_start_mesh(dev); |
51fb61e7 | 990 | } else if (sdata->vif.type == IEEE80211_IF_TYPE_AP) { |
b2c258fb JB |
991 | conf.ssid = sdata->u.ap.ssid; |
992 | conf.ssid_len = sdata->u.ap.ssid_len; | |
b2c258fb JB |
993 | conf.beacon = beacon; |
994 | conf.beacon_control = control; | |
f0706e82 | 995 | } |
b2c258fb | 996 | return local->ops->config_interface(local_to_hw(local), |
32bfd35d | 997 | &sdata->vif, &conf); |
f0706e82 JB |
998 | } |
999 | ||
b2c258fb JB |
1000 | int ieee80211_if_config(struct net_device *dev) |
1001 | { | |
f7a92144 LCC |
1002 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
1003 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
1004 | if (sdata->vif.type == IEEE80211_IF_TYPE_MESH_POINT && | |
1005 | (local->hw.flags & IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE)) | |
1006 | return ieee80211_if_config_beacon(dev); | |
b2c258fb JB |
1007 | return __ieee80211_if_config(dev, NULL, NULL); |
1008 | } | |
f0706e82 | 1009 | |
b2c258fb | 1010 | int ieee80211_if_config_beacon(struct net_device *dev) |
f0706e82 | 1011 | { |
f0706e82 | 1012 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); |
b2c258fb | 1013 | struct ieee80211_tx_control control; |
32bfd35d | 1014 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
b2c258fb | 1015 | struct sk_buff *skb; |
f0706e82 | 1016 | |
b2c258fb | 1017 | if (!(local->hw.flags & IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE)) |
f0706e82 | 1018 | return 0; |
32bfd35d JB |
1019 | skb = ieee80211_beacon_get(local_to_hw(local), &sdata->vif, |
1020 | &control); | |
b2c258fb JB |
1021 | if (!skb) |
1022 | return -ENOMEM; | |
1023 | return __ieee80211_if_config(dev, skb, &control); | |
1024 | } | |
f0706e82 | 1025 | |
b2c258fb JB |
1026 | int ieee80211_hw_config(struct ieee80211_local *local) |
1027 | { | |
b2c258fb JB |
1028 | struct ieee80211_channel *chan; |
1029 | int ret = 0; | |
f0706e82 | 1030 | |
8318d78a | 1031 | if (local->sta_sw_scanning) |
b2c258fb | 1032 | chan = local->scan_channel; |
8318d78a | 1033 | else |
b2c258fb | 1034 | chan = local->oper_channel; |
f0706e82 | 1035 | |
8318d78a JB |
1036 | local->hw.conf.channel = chan; |
1037 | ||
1038 | if (!local->hw.conf.power_level) | |
1039 | local->hw.conf.power_level = chan->max_power; | |
1040 | else | |
1041 | local->hw.conf.power_level = min(chan->max_power, | |
1042 | local->hw.conf.power_level); | |
1043 | ||
1044 | local->hw.conf.max_antenna_gain = chan->max_antenna_gain; | |
f0706e82 | 1045 | |
b2c258fb | 1046 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
8318d78a JB |
1047 | printk(KERN_DEBUG "%s: HW CONFIG: freq=%d\n", |
1048 | wiphy_name(local->hw.wiphy), chan->center_freq); | |
1049 | #endif | |
b2c258fb | 1050 | |
f7c4daed | 1051 | if (local->open_count) |
b2c258fb | 1052 | ret = local->ops->config(local_to_hw(local), &local->hw.conf); |
f0706e82 | 1053 | |
b2c258fb JB |
1054 | return ret; |
1055 | } | |
f0706e82 | 1056 | |
d3c990fb | 1057 | /** |
38668c05 TW |
1058 | * ieee80211_handle_ht should be used only after legacy configuration |
1059 | * has been determined namely band, as ht configuration depends upon | |
1060 | * the hardware's HT abilities for a _specific_ band. | |
d3c990fb | 1061 | */ |
38668c05 | 1062 | u32 ieee80211_handle_ht(struct ieee80211_local *local, int enable_ht, |
d3c990fb RR |
1063 | struct ieee80211_ht_info *req_ht_cap, |
1064 | struct ieee80211_ht_bss_info *req_bss_cap) | |
1065 | { | |
1066 | struct ieee80211_conf *conf = &local->hw.conf; | |
8318d78a | 1067 | struct ieee80211_supported_band *sband; |
38668c05 TW |
1068 | struct ieee80211_ht_info ht_conf; |
1069 | struct ieee80211_ht_bss_info ht_bss_conf; | |
d3c990fb | 1070 | int i; |
38668c05 | 1071 | u32 changed = 0; |
d3c990fb | 1072 | |
8318d78a JB |
1073 | sband = local->hw.wiphy->bands[conf->channel->band]; |
1074 | ||
d3c990fb | 1075 | /* HT is not supported */ |
8318d78a | 1076 | if (!sband->ht_info.ht_supported) { |
d3c990fb | 1077 | conf->flags &= ~IEEE80211_CONF_SUPPORT_HT_MODE; |
38668c05 | 1078 | return 0; |
d3c990fb RR |
1079 | } |
1080 | ||
38668c05 TW |
1081 | memset(&ht_conf, 0, sizeof(struct ieee80211_ht_info)); |
1082 | memset(&ht_bss_conf, 0, sizeof(struct ieee80211_ht_bss_info)); | |
1083 | ||
1084 | if (enable_ht) { | |
1085 | if (!(conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE)) | |
1086 | changed |= BSS_CHANGED_HT; | |
1087 | ||
d3c990fb | 1088 | conf->flags |= IEEE80211_CONF_SUPPORT_HT_MODE; |
38668c05 TW |
1089 | ht_conf.ht_supported = 1; |
1090 | ||
1091 | ht_conf.cap = req_ht_cap->cap & sband->ht_info.cap; | |
1092 | ht_conf.cap &= ~(IEEE80211_HT_CAP_MIMO_PS); | |
1093 | ht_conf.cap |= sband->ht_info.cap & IEEE80211_HT_CAP_MIMO_PS; | |
1094 | ||
d3c990fb | 1095 | for (i = 0; i < SUPP_MCS_SET_LEN; i++) |
38668c05 TW |
1096 | ht_conf.supp_mcs_set[i] = |
1097 | sband->ht_info.supp_mcs_set[i] & | |
1098 | req_ht_cap->supp_mcs_set[i]; | |
1099 | ||
1100 | ht_bss_conf.primary_channel = req_bss_cap->primary_channel; | |
1101 | ht_bss_conf.bss_cap = req_bss_cap->bss_cap; | |
1102 | ht_bss_conf.bss_op_mode = req_bss_cap->bss_op_mode; | |
1103 | ||
1104 | ht_conf.ampdu_factor = req_ht_cap->ampdu_factor; | |
1105 | ht_conf.ampdu_density = req_ht_cap->ampdu_density; | |
1106 | ||
1107 | /* if bss configuration changed store the new one */ | |
1108 | if (memcmp(&conf->ht_conf, &ht_conf, sizeof(ht_conf)) || | |
1109 | memcmp(&conf->ht_bss_conf, &ht_bss_conf, sizeof(ht_bss_conf))) { | |
1110 | changed |= BSS_CHANGED_HT; | |
1111 | memcpy(&conf->ht_conf, &ht_conf, sizeof(ht_conf)); | |
1112 | memcpy(&conf->ht_bss_conf, &ht_bss_conf, sizeof(ht_bss_conf)); | |
1113 | } | |
1114 | } else { | |
1115 | if (conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE) | |
1116 | changed |= BSS_CHANGED_HT; | |
1117 | conf->flags &= ~IEEE80211_CONF_SUPPORT_HT_MODE; | |
d3c990fb RR |
1118 | } |
1119 | ||
38668c05 | 1120 | return changed; |
d3c990fb RR |
1121 | } |
1122 | ||
471b3efd JB |
1123 | void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, |
1124 | u32 changed) | |
d9430a32 | 1125 | { |
471b3efd JB |
1126 | struct ieee80211_local *local = sdata->local; |
1127 | ||
1128 | if (!changed) | |
1129 | return; | |
1130 | ||
1131 | if (local->ops->bss_info_changed) | |
1132 | local->ops->bss_info_changed(local_to_hw(local), | |
1133 | &sdata->vif, | |
1134 | &sdata->bss_conf, | |
1135 | changed); | |
d9430a32 DD |
1136 | } |
1137 | ||
1138 | void ieee80211_reset_erp_info(struct net_device *dev) | |
1139 | { | |
1140 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
1141 | ||
471b3efd JB |
1142 | sdata->bss_conf.use_cts_prot = 0; |
1143 | sdata->bss_conf.use_short_preamble = 0; | |
1144 | ieee80211_bss_info_change_notify(sdata, | |
1145 | BSS_CHANGED_ERP_CTS_PROT | | |
1146 | BSS_CHANGED_ERP_PREAMBLE); | |
d9430a32 DD |
1147 | } |
1148 | ||
f0706e82 JB |
1149 | void ieee80211_tx_status_irqsafe(struct ieee80211_hw *hw, |
1150 | struct sk_buff *skb, | |
1151 | struct ieee80211_tx_status *status) | |
1152 | { | |
1153 | struct ieee80211_local *local = hw_to_local(hw); | |
1154 | struct ieee80211_tx_status *saved; | |
1155 | int tmp; | |
1156 | ||
1157 | skb->dev = local->mdev; | |
1158 | saved = kmalloc(sizeof(struct ieee80211_tx_status), GFP_ATOMIC); | |
1159 | if (unlikely(!saved)) { | |
1160 | if (net_ratelimit()) | |
1161 | printk(KERN_WARNING "%s: Not enough memory, " | |
1162 | "dropping tx status", skb->dev->name); | |
1163 | /* should be dev_kfree_skb_irq, but due to this function being | |
1164 | * named _irqsafe instead of just _irq we can't be sure that | |
1165 | * people won't call it from non-irq contexts */ | |
1166 | dev_kfree_skb_any(skb); | |
1167 | return; | |
1168 | } | |
1169 | memcpy(saved, status, sizeof(struct ieee80211_tx_status)); | |
1170 | /* copy pointer to saved status into skb->cb for use by tasklet */ | |
1171 | memcpy(skb->cb, &saved, sizeof(saved)); | |
1172 | ||
1173 | skb->pkt_type = IEEE80211_TX_STATUS_MSG; | |
1174 | skb_queue_tail(status->control.flags & IEEE80211_TXCTL_REQ_TX_STATUS ? | |
1175 | &local->skb_queue : &local->skb_queue_unreliable, skb); | |
1176 | tmp = skb_queue_len(&local->skb_queue) + | |
1177 | skb_queue_len(&local->skb_queue_unreliable); | |
1178 | while (tmp > IEEE80211_IRQSAFE_QUEUE_LIMIT && | |
1179 | (skb = skb_dequeue(&local->skb_queue_unreliable))) { | |
1180 | memcpy(&saved, skb->cb, sizeof(saved)); | |
1181 | kfree(saved); | |
1182 | dev_kfree_skb_irq(skb); | |
1183 | tmp--; | |
1184 | I802_DEBUG_INC(local->tx_status_drop); | |
1185 | } | |
1186 | tasklet_schedule(&local->tasklet); | |
1187 | } | |
1188 | EXPORT_SYMBOL(ieee80211_tx_status_irqsafe); | |
1189 | ||
1190 | static void ieee80211_tasklet_handler(unsigned long data) | |
1191 | { | |
1192 | struct ieee80211_local *local = (struct ieee80211_local *) data; | |
1193 | struct sk_buff *skb; | |
1194 | struct ieee80211_rx_status rx_status; | |
1195 | struct ieee80211_tx_status *tx_status; | |
eadc8d9e | 1196 | struct ieee80211_ra_tid *ra_tid; |
f0706e82 JB |
1197 | |
1198 | while ((skb = skb_dequeue(&local->skb_queue)) || | |
1199 | (skb = skb_dequeue(&local->skb_queue_unreliable))) { | |
1200 | switch (skb->pkt_type) { | |
1201 | case IEEE80211_RX_MSG: | |
1202 | /* status is in skb->cb */ | |
1203 | memcpy(&rx_status, skb->cb, sizeof(rx_status)); | |
51fb61e7 | 1204 | /* Clear skb->pkt_type in order to not confuse kernel |
f0706e82 JB |
1205 | * netstack. */ |
1206 | skb->pkt_type = 0; | |
1207 | __ieee80211_rx(local_to_hw(local), skb, &rx_status); | |
1208 | break; | |
1209 | case IEEE80211_TX_STATUS_MSG: | |
1210 | /* get pointer to saved status out of skb->cb */ | |
1211 | memcpy(&tx_status, skb->cb, sizeof(tx_status)); | |
1212 | skb->pkt_type = 0; | |
1213 | ieee80211_tx_status(local_to_hw(local), | |
1214 | skb, tx_status); | |
1215 | kfree(tx_status); | |
1216 | break; | |
eadc8d9e RR |
1217 | case IEEE80211_DELBA_MSG: |
1218 | ra_tid = (struct ieee80211_ra_tid *) &skb->cb; | |
1219 | ieee80211_stop_tx_ba_cb(local_to_hw(local), | |
1220 | ra_tid->ra, ra_tid->tid); | |
1221 | dev_kfree_skb(skb); | |
1222 | break; | |
1223 | case IEEE80211_ADDBA_MSG: | |
1224 | ra_tid = (struct ieee80211_ra_tid *) &skb->cb; | |
1225 | ieee80211_start_tx_ba_cb(local_to_hw(local), | |
1226 | ra_tid->ra, ra_tid->tid); | |
1227 | dev_kfree_skb(skb); | |
1228 | break ; | |
f0706e82 JB |
1229 | default: /* should never get here! */ |
1230 | printk(KERN_ERR "%s: Unknown message type (%d)\n", | |
dd1cd4c6 | 1231 | wiphy_name(local->hw.wiphy), skb->pkt_type); |
f0706e82 JB |
1232 | dev_kfree_skb(skb); |
1233 | break; | |
1234 | } | |
1235 | } | |
1236 | } | |
1237 | ||
f0706e82 JB |
1238 | /* Remove added headers (e.g., QoS control), encryption header/MIC, etc. to |
1239 | * make a prepared TX frame (one that has been given to hw) to look like brand | |
1240 | * new IEEE 802.11 frame that is ready to go through TX processing again. | |
1241 | * Also, tx_packet_data in cb is restored from tx_control. */ | |
1242 | static void ieee80211_remove_tx_extra(struct ieee80211_local *local, | |
1243 | struct ieee80211_key *key, | |
1244 | struct sk_buff *skb, | |
1245 | struct ieee80211_tx_control *control) | |
1246 | { | |
1247 | int hdrlen, iv_len, mic_len; | |
1248 | struct ieee80211_tx_packet_data *pkt_data; | |
1249 | ||
1250 | pkt_data = (struct ieee80211_tx_packet_data *)skb->cb; | |
32bfd35d | 1251 | pkt_data->ifindex = vif_to_sdata(control->vif)->dev->ifindex; |
e8bf9649 JS |
1252 | pkt_data->flags = 0; |
1253 | if (control->flags & IEEE80211_TXCTL_REQ_TX_STATUS) | |
1254 | pkt_data->flags |= IEEE80211_TXPD_REQ_TX_STATUS; | |
1255 | if (control->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT) | |
1256 | pkt_data->flags |= IEEE80211_TXPD_DO_NOT_ENCRYPT; | |
1257 | if (control->flags & IEEE80211_TXCTL_REQUEUE) | |
1258 | pkt_data->flags |= IEEE80211_TXPD_REQUEUE; | |
678f5f71 JB |
1259 | if (control->flags & IEEE80211_TXCTL_EAPOL_FRAME) |
1260 | pkt_data->flags |= IEEE80211_TXPD_EAPOL_FRAME; | |
f0706e82 JB |
1261 | pkt_data->queue = control->queue; |
1262 | ||
1263 | hdrlen = ieee80211_get_hdrlen_from_skb(skb); | |
1264 | ||
1265 | if (!key) | |
1266 | goto no_key; | |
1267 | ||
8f20fc24 | 1268 | switch (key->conf.alg) { |
f0706e82 JB |
1269 | case ALG_WEP: |
1270 | iv_len = WEP_IV_LEN; | |
1271 | mic_len = WEP_ICV_LEN; | |
1272 | break; | |
1273 | case ALG_TKIP: | |
1274 | iv_len = TKIP_IV_LEN; | |
1275 | mic_len = TKIP_ICV_LEN; | |
1276 | break; | |
1277 | case ALG_CCMP: | |
1278 | iv_len = CCMP_HDR_LEN; | |
1279 | mic_len = CCMP_MIC_LEN; | |
1280 | break; | |
1281 | default: | |
1282 | goto no_key; | |
1283 | } | |
1284 | ||
8f20fc24 | 1285 | if (skb->len >= mic_len && |
11a843b7 | 1286 | !(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)) |
f0706e82 JB |
1287 | skb_trim(skb, skb->len - mic_len); |
1288 | if (skb->len >= iv_len && skb->len > hdrlen) { | |
1289 | memmove(skb->data + iv_len, skb->data, hdrlen); | |
1290 | skb_pull(skb, iv_len); | |
1291 | } | |
1292 | ||
1293 | no_key: | |
1294 | { | |
1295 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; | |
1296 | u16 fc = le16_to_cpu(hdr->frame_control); | |
1297 | if ((fc & 0x8C) == 0x88) /* QoS Control Field */ { | |
1298 | fc &= ~IEEE80211_STYPE_QOS_DATA; | |
1299 | hdr->frame_control = cpu_to_le16(fc); | |
1300 | memmove(skb->data + 2, skb->data, hdrlen - 2); | |
1301 | skb_pull(skb, 2); | |
1302 | } | |
1303 | } | |
1304 | } | |
1305 | ||
d46e144b JB |
1306 | static void ieee80211_handle_filtered_frame(struct ieee80211_local *local, |
1307 | struct sta_info *sta, | |
1308 | struct sk_buff *skb, | |
1309 | struct ieee80211_tx_status *status) | |
1310 | { | |
1311 | sta->tx_filtered_count++; | |
1312 | ||
1313 | /* | |
1314 | * Clear the TX filter mask for this STA when sending the next | |
1315 | * packet. If the STA went to power save mode, this will happen | |
1316 | * happen when it wakes up for the next time. | |
1317 | */ | |
1318 | sta->flags |= WLAN_STA_CLEAR_PS_FILT; | |
1319 | ||
1320 | /* | |
1321 | * This code races in the following way: | |
1322 | * | |
1323 | * (1) STA sends frame indicating it will go to sleep and does so | |
1324 | * (2) hardware/firmware adds STA to filter list, passes frame up | |
1325 | * (3) hardware/firmware processes TX fifo and suppresses a frame | |
1326 | * (4) we get TX status before having processed the frame and | |
1327 | * knowing that the STA has gone to sleep. | |
1328 | * | |
1329 | * This is actually quite unlikely even when both those events are | |
1330 | * processed from interrupts coming in quickly after one another or | |
1331 | * even at the same time because we queue both TX status events and | |
1332 | * RX frames to be processed by a tasklet and process them in the | |
1333 | * same order that they were received or TX status last. Hence, there | |
1334 | * is no race as long as the frame RX is processed before the next TX | |
1335 | * status, which drivers can ensure, see below. | |
1336 | * | |
1337 | * Note that this can only happen if the hardware or firmware can | |
1338 | * actually add STAs to the filter list, if this is done by the | |
1339 | * driver in response to set_tim() (which will only reduce the race | |
1340 | * this whole filtering tries to solve, not completely solve it) | |
1341 | * this situation cannot happen. | |
1342 | * | |
1343 | * To completely solve this race drivers need to make sure that they | |
1344 | * (a) don't mix the irq-safe/not irq-safe TX status/RX processing | |
1345 | * functions and | |
1346 | * (b) always process RX events before TX status events if ordering | |
1347 | * can be unknown, for example with different interrupt status | |
1348 | * bits. | |
1349 | */ | |
1350 | if (sta->flags & WLAN_STA_PS && | |
1351 | skb_queue_len(&sta->tx_filtered) < STA_MAX_TX_BUFFER) { | |
1352 | ieee80211_remove_tx_extra(local, sta->key, skb, | |
1353 | &status->control); | |
1354 | skb_queue_tail(&sta->tx_filtered, skb); | |
1355 | return; | |
1356 | } | |
1357 | ||
1358 | if (!(sta->flags & WLAN_STA_PS) && | |
1359 | !(status->control.flags & IEEE80211_TXCTL_REQUEUE)) { | |
1360 | /* Software retry the packet once */ | |
1361 | status->control.flags |= IEEE80211_TXCTL_REQUEUE; | |
1362 | ieee80211_remove_tx_extra(local, sta->key, skb, | |
1363 | &status->control); | |
1364 | dev_queue_xmit(skb); | |
1365 | return; | |
1366 | } | |
1367 | ||
1368 | if (net_ratelimit()) | |
1369 | printk(KERN_DEBUG "%s: dropped TX filtered frame, " | |
1370 | "queue_len=%d PS=%d @%lu\n", | |
1371 | wiphy_name(local->hw.wiphy), | |
1372 | skb_queue_len(&sta->tx_filtered), | |
1373 | !!(sta->flags & WLAN_STA_PS), jiffies); | |
1374 | dev_kfree_skb(skb); | |
1375 | } | |
1376 | ||
f0706e82 JB |
1377 | void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb, |
1378 | struct ieee80211_tx_status *status) | |
1379 | { | |
1380 | struct sk_buff *skb2; | |
1381 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; | |
1382 | struct ieee80211_local *local = hw_to_local(hw); | |
1383 | u16 frag, type; | |
b306f453 JB |
1384 | struct ieee80211_tx_status_rtap_hdr *rthdr; |
1385 | struct ieee80211_sub_if_data *sdata; | |
3d30d949 | 1386 | struct net_device *prev_dev = NULL; |
f0706e82 JB |
1387 | |
1388 | if (!status) { | |
1389 | printk(KERN_ERR | |
1390 | "%s: ieee80211_tx_status called with NULL status\n", | |
dd1cd4c6 | 1391 | wiphy_name(local->hw.wiphy)); |
f0706e82 JB |
1392 | dev_kfree_skb(skb); |
1393 | return; | |
1394 | } | |
1395 | ||
d0709a65 JB |
1396 | rcu_read_lock(); |
1397 | ||
f0706e82 JB |
1398 | if (status->excessive_retries) { |
1399 | struct sta_info *sta; | |
1400 | sta = sta_info_get(local, hdr->addr1); | |
1401 | if (sta) { | |
1402 | if (sta->flags & WLAN_STA_PS) { | |
d46e144b JB |
1403 | /* |
1404 | * The STA is in power save mode, so assume | |
f0706e82 JB |
1405 | * that this TX packet failed because of that. |
1406 | */ | |
1407 | status->excessive_retries = 0; | |
1408 | status->flags |= IEEE80211_TX_STATUS_TX_FILTERED; | |
d46e144b JB |
1409 | ieee80211_handle_filtered_frame(local, sta, |
1410 | skb, status); | |
d0709a65 | 1411 | rcu_read_unlock(); |
d46e144b | 1412 | return; |
f0706e82 | 1413 | } |
f0706e82 JB |
1414 | } |
1415 | } | |
1416 | ||
1417 | if (status->flags & IEEE80211_TX_STATUS_TX_FILTERED) { | |
1418 | struct sta_info *sta; | |
1419 | sta = sta_info_get(local, hdr->addr1); | |
1420 | if (sta) { | |
d46e144b JB |
1421 | ieee80211_handle_filtered_frame(local, sta, skb, |
1422 | status); | |
d0709a65 | 1423 | rcu_read_unlock(); |
f0706e82 JB |
1424 | return; |
1425 | } | |
1abbe498 MN |
1426 | } else |
1427 | rate_control_tx_status(local->mdev, skb, status); | |
f0706e82 | 1428 | |
d0709a65 JB |
1429 | rcu_read_unlock(); |
1430 | ||
f0706e82 JB |
1431 | ieee80211_led_tx(local, 0); |
1432 | ||
1433 | /* SNMP counters | |
1434 | * Fragments are passed to low-level drivers as separate skbs, so these | |
1435 | * are actually fragments, not frames. Update frame counters only for | |
1436 | * the first fragment of the frame. */ | |
1437 | ||
1438 | frag = le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_FRAG; | |
1439 | type = le16_to_cpu(hdr->frame_control) & IEEE80211_FCTL_FTYPE; | |
1440 | ||
1441 | if (status->flags & IEEE80211_TX_STATUS_ACK) { | |
1442 | if (frag == 0) { | |
1443 | local->dot11TransmittedFrameCount++; | |
1444 | if (is_multicast_ether_addr(hdr->addr1)) | |
1445 | local->dot11MulticastTransmittedFrameCount++; | |
1446 | if (status->retry_count > 0) | |
1447 | local->dot11RetryCount++; | |
1448 | if (status->retry_count > 1) | |
1449 | local->dot11MultipleRetryCount++; | |
1450 | } | |
1451 | ||
1452 | /* This counter shall be incremented for an acknowledged MPDU | |
1453 | * with an individual address in the address 1 field or an MPDU | |
1454 | * with a multicast address in the address 1 field of type Data | |
1455 | * or Management. */ | |
1456 | if (!is_multicast_ether_addr(hdr->addr1) || | |
1457 | type == IEEE80211_FTYPE_DATA || | |
1458 | type == IEEE80211_FTYPE_MGMT) | |
1459 | local->dot11TransmittedFragmentCount++; | |
1460 | } else { | |
1461 | if (frag == 0) | |
1462 | local->dot11FailedCount++; | |
1463 | } | |
1464 | ||
b306f453 JB |
1465 | /* this was a transmitted frame, but now we want to reuse it */ |
1466 | skb_orphan(skb); | |
1467 | ||
3d30d949 MW |
1468 | /* |
1469 | * This is a bit racy but we can avoid a lot of work | |
1470 | * with this test... | |
1471 | */ | |
1472 | if (!local->monitors && !local->cooked_mntrs) { | |
f0706e82 JB |
1473 | dev_kfree_skb(skb); |
1474 | return; | |
1475 | } | |
1476 | ||
b306f453 | 1477 | /* send frame to monitor interfaces now */ |
f0706e82 | 1478 | |
b306f453 JB |
1479 | if (skb_headroom(skb) < sizeof(*rthdr)) { |
1480 | printk(KERN_ERR "ieee80211_tx_status: headroom too small\n"); | |
f0706e82 JB |
1481 | dev_kfree_skb(skb); |
1482 | return; | |
1483 | } | |
f0706e82 | 1484 | |
988c0f72 | 1485 | rthdr = (struct ieee80211_tx_status_rtap_hdr *) |
b306f453 JB |
1486 | skb_push(skb, sizeof(*rthdr)); |
1487 | ||
1488 | memset(rthdr, 0, sizeof(*rthdr)); | |
1489 | rthdr->hdr.it_len = cpu_to_le16(sizeof(*rthdr)); | |
1490 | rthdr->hdr.it_present = | |
1491 | cpu_to_le32((1 << IEEE80211_RADIOTAP_TX_FLAGS) | | |
1492 | (1 << IEEE80211_RADIOTAP_DATA_RETRIES)); | |
1493 | ||
1494 | if (!(status->flags & IEEE80211_TX_STATUS_ACK) && | |
1495 | !is_multicast_ether_addr(hdr->addr1)) | |
1496 | rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_FAIL); | |
1497 | ||
1498 | if ((status->control.flags & IEEE80211_TXCTL_USE_RTS_CTS) && | |
1499 | (status->control.flags & IEEE80211_TXCTL_USE_CTS_PROTECT)) | |
1500 | rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_CTS); | |
1501 | else if (status->control.flags & IEEE80211_TXCTL_USE_RTS_CTS) | |
1502 | rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_RTS); | |
1503 | ||
1504 | rthdr->data_retries = status->retry_count; | |
1505 | ||
3d30d949 MW |
1506 | /* XXX: is this sufficient for BPF? */ |
1507 | skb_set_mac_header(skb, 0); | |
1508 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
1509 | skb->pkt_type = PACKET_OTHERHOST; | |
1510 | skb->protocol = htons(ETH_P_802_2); | |
1511 | memset(skb->cb, 0, sizeof(skb->cb)); | |
1512 | ||
79010420 | 1513 | rcu_read_lock(); |
79010420 | 1514 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { |
51fb61e7 | 1515 | if (sdata->vif.type == IEEE80211_IF_TYPE_MNTR) { |
b306f453 JB |
1516 | if (!netif_running(sdata->dev)) |
1517 | continue; | |
3d30d949 MW |
1518 | |
1519 | if (prev_dev) { | |
79010420 | 1520 | skb2 = skb_clone(skb, GFP_ATOMIC); |
3d30d949 MW |
1521 | if (skb2) { |
1522 | skb2->dev = prev_dev; | |
1523 | netif_rx(skb2); | |
1524 | } | |
1525 | } | |
1526 | ||
1527 | prev_dev = sdata->dev; | |
b306f453 JB |
1528 | } |
1529 | } | |
3d30d949 MW |
1530 | if (prev_dev) { |
1531 | skb->dev = prev_dev; | |
1532 | netif_rx(skb); | |
1533 | skb = NULL; | |
1534 | } | |
79010420 | 1535 | rcu_read_unlock(); |
3d30d949 | 1536 | dev_kfree_skb(skb); |
f0706e82 JB |
1537 | } |
1538 | EXPORT_SYMBOL(ieee80211_tx_status); | |
1539 | ||
f0706e82 JB |
1540 | struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len, |
1541 | const struct ieee80211_ops *ops) | |
1542 | { | |
f0706e82 | 1543 | struct ieee80211_local *local; |
f0706e82 JB |
1544 | int priv_size; |
1545 | struct wiphy *wiphy; | |
1546 | ||
1547 | /* Ensure 32-byte alignment of our private data and hw private data. | |
1548 | * We use the wiphy priv data for both our ieee80211_local and for | |
1549 | * the driver's private data | |
1550 | * | |
1551 | * In memory it'll be like this: | |
1552 | * | |
1553 | * +-------------------------+ | |
1554 | * | struct wiphy | | |
1555 | * +-------------------------+ | |
1556 | * | struct ieee80211_local | | |
1557 | * +-------------------------+ | |
1558 | * | driver's private data | | |
1559 | * +-------------------------+ | |
1560 | * | |
1561 | */ | |
1562 | priv_size = ((sizeof(struct ieee80211_local) + | |
1563 | NETDEV_ALIGN_CONST) & ~NETDEV_ALIGN_CONST) + | |
1564 | priv_data_len; | |
1565 | ||
1566 | wiphy = wiphy_new(&mac80211_config_ops, priv_size); | |
1567 | ||
1568 | if (!wiphy) | |
1569 | return NULL; | |
1570 | ||
1571 | wiphy->privid = mac80211_wiphy_privid; | |
1572 | ||
1573 | local = wiphy_priv(wiphy); | |
1574 | local->hw.wiphy = wiphy; | |
1575 | ||
1576 | local->hw.priv = (char *)local + | |
1577 | ((sizeof(struct ieee80211_local) + | |
1578 | NETDEV_ALIGN_CONST) & ~NETDEV_ALIGN_CONST); | |
1579 | ||
4480f15c | 1580 | BUG_ON(!ops->tx); |
4150c572 JB |
1581 | BUG_ON(!ops->start); |
1582 | BUG_ON(!ops->stop); | |
4480f15c JB |
1583 | BUG_ON(!ops->config); |
1584 | BUG_ON(!ops->add_interface); | |
4150c572 JB |
1585 | BUG_ON(!ops->remove_interface); |
1586 | BUG_ON(!ops->configure_filter); | |
f0706e82 JB |
1587 | local->ops = ops; |
1588 | ||
f0706e82 JB |
1589 | local->hw.queues = 1; /* default */ |
1590 | ||
f0706e82 JB |
1591 | local->bridge_packets = 1; |
1592 | ||
1593 | local->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD; | |
1594 | local->fragmentation_threshold = IEEE80211_MAX_FRAG_THRESHOLD; | |
1595 | local->short_retry_limit = 7; | |
1596 | local->long_retry_limit = 4; | |
1597 | local->hw.conf.radio_enabled = 1; | |
f0706e82 | 1598 | |
79010420 | 1599 | INIT_LIST_HEAD(&local->interfaces); |
f0706e82 | 1600 | |
b16bd15c JB |
1601 | spin_lock_init(&local->key_lock); |
1602 | ||
f0706e82 | 1603 | INIT_DELAYED_WORK(&local->scan_work, ieee80211_sta_scan_work); |
f0706e82 JB |
1604 | |
1605 | sta_info_init(local); | |
1606 | ||
f0706e82 JB |
1607 | tasklet_init(&local->tx_pending_tasklet, ieee80211_tx_pending, |
1608 | (unsigned long)local); | |
1609 | tasklet_disable(&local->tx_pending_tasklet); | |
1610 | ||
1611 | tasklet_init(&local->tasklet, | |
1612 | ieee80211_tasklet_handler, | |
1613 | (unsigned long) local); | |
1614 | tasklet_disable(&local->tasklet); | |
1615 | ||
1616 | skb_queue_head_init(&local->skb_queue); | |
1617 | skb_queue_head_init(&local->skb_queue_unreliable); | |
1618 | ||
1619 | return local_to_hw(local); | |
1620 | } | |
1621 | EXPORT_SYMBOL(ieee80211_alloc_hw); | |
1622 | ||
1623 | int ieee80211_register_hw(struct ieee80211_hw *hw) | |
1624 | { | |
1625 | struct ieee80211_local *local = hw_to_local(hw); | |
1626 | const char *name; | |
1627 | int result; | |
8318d78a | 1628 | enum ieee80211_band band; |
96d51056 JB |
1629 | struct net_device *mdev; |
1630 | struct ieee80211_sub_if_data *sdata; | |
8318d78a JB |
1631 | |
1632 | /* | |
1633 | * generic code guarantees at least one band, | |
1634 | * set this very early because much code assumes | |
1635 | * that hw.conf.channel is assigned | |
1636 | */ | |
1637 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { | |
1638 | struct ieee80211_supported_band *sband; | |
1639 | ||
1640 | sband = local->hw.wiphy->bands[band]; | |
1641 | if (sband) { | |
1642 | /* init channel we're on */ | |
1643 | local->hw.conf.channel = | |
1644 | local->oper_channel = | |
1645 | local->scan_channel = &sband->channels[0]; | |
1646 | break; | |
1647 | } | |
1648 | } | |
f0706e82 JB |
1649 | |
1650 | result = wiphy_register(local->hw.wiphy); | |
1651 | if (result < 0) | |
1652 | return result; | |
1653 | ||
96d51056 JB |
1654 | /* for now, mdev needs sub_if_data :/ */ |
1655 | mdev = alloc_netdev(sizeof(struct ieee80211_sub_if_data), | |
1656 | "wmaster%d", ether_setup); | |
1657 | if (!mdev) | |
1658 | goto fail_mdev_alloc; | |
1659 | ||
1660 | sdata = IEEE80211_DEV_TO_SUB_IF(mdev); | |
1661 | mdev->ieee80211_ptr = &sdata->wdev; | |
1662 | sdata->wdev.wiphy = local->hw.wiphy; | |
1663 | ||
1664 | local->mdev = mdev; | |
1665 | ||
1666 | ieee80211_rx_bss_list_init(mdev); | |
1667 | ||
1668 | mdev->hard_start_xmit = ieee80211_master_start_xmit; | |
1669 | mdev->open = ieee80211_master_open; | |
1670 | mdev->stop = ieee80211_master_stop; | |
1671 | mdev->type = ARPHRD_IEEE80211; | |
1672 | mdev->header_ops = &ieee80211_header_ops; | |
1673 | mdev->set_multicast_list = ieee80211_master_set_multicast_list; | |
1674 | ||
1675 | sdata->vif.type = IEEE80211_IF_TYPE_AP; | |
1676 | sdata->dev = mdev; | |
1677 | sdata->local = local; | |
1678 | sdata->u.ap.force_unicast_rateidx = -1; | |
1679 | sdata->u.ap.max_ratectrl_rateidx = -1; | |
1680 | ieee80211_if_sdata_init(sdata); | |
1681 | ||
1682 | /* no RCU needed since we're still during init phase */ | |
1683 | list_add_tail(&sdata->list, &local->interfaces); | |
1684 | ||
f0706e82 JB |
1685 | name = wiphy_dev(local->hw.wiphy)->driver->name; |
1686 | local->hw.workqueue = create_singlethread_workqueue(name); | |
1687 | if (!local->hw.workqueue) { | |
1688 | result = -ENOMEM; | |
1689 | goto fail_workqueue; | |
1690 | } | |
1691 | ||
b306f453 JB |
1692 | /* |
1693 | * The hardware needs headroom for sending the frame, | |
1694 | * and we need some headroom for passing the frame to monitor | |
1695 | * interfaces, but never both at the same time. | |
1696 | */ | |
33ccad35 JB |
1697 | local->tx_headroom = max_t(unsigned int , local->hw.extra_tx_headroom, |
1698 | sizeof(struct ieee80211_tx_status_rtap_hdr)); | |
b306f453 | 1699 | |
e9f207f0 JB |
1700 | debugfs_hw_add(local); |
1701 | ||
f0706e82 JB |
1702 | local->hw.conf.beacon_int = 1000; |
1703 | ||
1704 | local->wstats_flags |= local->hw.max_rssi ? | |
1705 | IW_QUAL_LEVEL_UPDATED : IW_QUAL_LEVEL_INVALID; | |
1706 | local->wstats_flags |= local->hw.max_signal ? | |
1707 | IW_QUAL_QUAL_UPDATED : IW_QUAL_QUAL_INVALID; | |
1708 | local->wstats_flags |= local->hw.max_noise ? | |
1709 | IW_QUAL_NOISE_UPDATED : IW_QUAL_NOISE_INVALID; | |
1710 | if (local->hw.max_rssi < 0 || local->hw.max_noise < 0) | |
1711 | local->wstats_flags |= IW_QUAL_DBM; | |
1712 | ||
1713 | result = sta_info_start(local); | |
1714 | if (result < 0) | |
1715 | goto fail_sta_info; | |
1716 | ||
1717 | rtnl_lock(); | |
1718 | result = dev_alloc_name(local->mdev, local->mdev->name); | |
1719 | if (result < 0) | |
1720 | goto fail_dev; | |
1721 | ||
1722 | memcpy(local->mdev->dev_addr, local->hw.wiphy->perm_addr, ETH_ALEN); | |
1723 | SET_NETDEV_DEV(local->mdev, wiphy_dev(local->hw.wiphy)); | |
1724 | ||
1725 | result = register_netdevice(local->mdev); | |
1726 | if (result < 0) | |
1727 | goto fail_dev; | |
1728 | ||
e9f207f0 | 1729 | ieee80211_debugfs_add_netdev(IEEE80211_DEV_TO_SUB_IF(local->mdev)); |
5b2812e9 | 1730 | ieee80211_if_set_type(local->mdev, IEEE80211_IF_TYPE_AP); |
e9f207f0 | 1731 | |
830f9038 JB |
1732 | result = ieee80211_init_rate_ctrl_alg(local, |
1733 | hw->rate_control_algorithm); | |
f0706e82 JB |
1734 | if (result < 0) { |
1735 | printk(KERN_DEBUG "%s: Failed to initialize rate control " | |
dd1cd4c6 | 1736 | "algorithm\n", wiphy_name(local->hw.wiphy)); |
f0706e82 JB |
1737 | goto fail_rate; |
1738 | } | |
1739 | ||
1740 | result = ieee80211_wep_init(local); | |
1741 | ||
1742 | if (result < 0) { | |
1743 | printk(KERN_DEBUG "%s: Failed to initialize wep\n", | |
dd1cd4c6 | 1744 | wiphy_name(local->hw.wiphy)); |
f0706e82 JB |
1745 | goto fail_wep; |
1746 | } | |
1747 | ||
e100bb64 JB |
1748 | if (hw->queues > IEEE80211_MAX_QUEUES) |
1749 | hw->queues = IEEE80211_MAX_QUEUES; | |
1750 | if (hw->ampdu_queues > IEEE80211_MAX_AMPDU_QUEUES) | |
1751 | hw->ampdu_queues = IEEE80211_MAX_AMPDU_QUEUES; | |
1752 | ||
f0706e82 JB |
1753 | ieee80211_install_qdisc(local->mdev); |
1754 | ||
1755 | /* add one default STA interface */ | |
1756 | result = ieee80211_if_add(local->mdev, "wlan%d", NULL, | |
ee385855 | 1757 | IEEE80211_IF_TYPE_STA, NULL); |
f0706e82 JB |
1758 | if (result) |
1759 | printk(KERN_WARNING "%s: Failed to add default virtual iface\n", | |
dd1cd4c6 | 1760 | wiphy_name(local->hw.wiphy)); |
f0706e82 JB |
1761 | |
1762 | local->reg_state = IEEE80211_DEV_REGISTERED; | |
1763 | rtnl_unlock(); | |
1764 | ||
1765 | ieee80211_led_init(local); | |
1766 | ||
1767 | return 0; | |
1768 | ||
1769 | fail_wep: | |
1770 | rate_control_deinitialize(local); | |
1771 | fail_rate: | |
e9f207f0 | 1772 | ieee80211_debugfs_remove_netdev(IEEE80211_DEV_TO_SUB_IF(local->mdev)); |
f0706e82 JB |
1773 | unregister_netdevice(local->mdev); |
1774 | fail_dev: | |
1775 | rtnl_unlock(); | |
1776 | sta_info_stop(local); | |
1777 | fail_sta_info: | |
e9f207f0 | 1778 | debugfs_hw_del(local); |
f0706e82 JB |
1779 | destroy_workqueue(local->hw.workqueue); |
1780 | fail_workqueue: | |
96d51056 JB |
1781 | ieee80211_if_free(local->mdev); |
1782 | local->mdev = NULL; | |
1783 | fail_mdev_alloc: | |
f0706e82 JB |
1784 | wiphy_unregister(local->hw.wiphy); |
1785 | return result; | |
1786 | } | |
1787 | EXPORT_SYMBOL(ieee80211_register_hw); | |
1788 | ||
f0706e82 JB |
1789 | void ieee80211_unregister_hw(struct ieee80211_hw *hw) |
1790 | { | |
1791 | struct ieee80211_local *local = hw_to_local(hw); | |
1792 | struct ieee80211_sub_if_data *sdata, *tmp; | |
f0706e82 JB |
1793 | |
1794 | tasklet_kill(&local->tx_pending_tasklet); | |
1795 | tasklet_kill(&local->tasklet); | |
1796 | ||
1797 | rtnl_lock(); | |
1798 | ||
1799 | BUG_ON(local->reg_state != IEEE80211_DEV_REGISTERED); | |
1800 | ||
1801 | local->reg_state = IEEE80211_DEV_UNREGISTERED; | |
f0706e82 | 1802 | |
79010420 JB |
1803 | /* |
1804 | * At this point, interface list manipulations are fine | |
1805 | * because the driver cannot be handing us frames any | |
1806 | * more and the tasklet is killed. | |
1807 | */ | |
5b2812e9 JB |
1808 | |
1809 | /* | |
1810 | * First, we remove all non-master interfaces. Do this because they | |
1811 | * may have bss pointer dependency on the master, and when we free | |
1812 | * the master these would be freed as well, breaking our list | |
1813 | * iteration completely. | |
1814 | */ | |
1815 | list_for_each_entry_safe(sdata, tmp, &local->interfaces, list) { | |
1816 | if (sdata->dev == local->mdev) | |
1817 | continue; | |
1818 | list_del(&sdata->list); | |
f0706e82 | 1819 | __ieee80211_if_del(local, sdata); |
5b2812e9 JB |
1820 | } |
1821 | ||
1822 | /* then, finally, remove the master interface */ | |
1823 | __ieee80211_if_del(local, IEEE80211_DEV_TO_SUB_IF(local->mdev)); | |
f0706e82 JB |
1824 | |
1825 | rtnl_unlock(); | |
1826 | ||
f0706e82 JB |
1827 | ieee80211_rx_bss_list_deinit(local->mdev); |
1828 | ieee80211_clear_tx_pending(local); | |
1829 | sta_info_stop(local); | |
1830 | rate_control_deinitialize(local); | |
e9f207f0 | 1831 | debugfs_hw_del(local); |
f0706e82 | 1832 | |
f0706e82 JB |
1833 | if (skb_queue_len(&local->skb_queue) |
1834 | || skb_queue_len(&local->skb_queue_unreliable)) | |
1835 | printk(KERN_WARNING "%s: skb_queue not empty\n", | |
dd1cd4c6 | 1836 | wiphy_name(local->hw.wiphy)); |
f0706e82 JB |
1837 | skb_queue_purge(&local->skb_queue); |
1838 | skb_queue_purge(&local->skb_queue_unreliable); | |
1839 | ||
1840 | destroy_workqueue(local->hw.workqueue); | |
1841 | wiphy_unregister(local->hw.wiphy); | |
1842 | ieee80211_wep_free(local); | |
1843 | ieee80211_led_exit(local); | |
96d51056 JB |
1844 | ieee80211_if_free(local->mdev); |
1845 | local->mdev = NULL; | |
f0706e82 JB |
1846 | } |
1847 | EXPORT_SYMBOL(ieee80211_unregister_hw); | |
1848 | ||
1849 | void ieee80211_free_hw(struct ieee80211_hw *hw) | |
1850 | { | |
1851 | struct ieee80211_local *local = hw_to_local(hw); | |
1852 | ||
f0706e82 JB |
1853 | wiphy_free(local->hw.wiphy); |
1854 | } | |
1855 | EXPORT_SYMBOL(ieee80211_free_hw); | |
1856 | ||
f0706e82 JB |
1857 | static int __init ieee80211_init(void) |
1858 | { | |
1859 | struct sk_buff *skb; | |
1860 | int ret; | |
1861 | ||
1862 | BUILD_BUG_ON(sizeof(struct ieee80211_tx_packet_data) > sizeof(skb->cb)); | |
1863 | ||
4b475898 | 1864 | ret = rc80211_pid_init(); |
ad018375 | 1865 | if (ret) |
d9357136 | 1866 | goto out; |
ac71c691 | 1867 | |
f0706e82 JB |
1868 | ret = ieee80211_wme_register(); |
1869 | if (ret) { | |
1870 | printk(KERN_DEBUG "ieee80211_init: failed to " | |
1871 | "initialize WME (err=%d)\n", ret); | |
3eadf5f4 | 1872 | goto out_cleanup_pid; |
f0706e82 JB |
1873 | } |
1874 | ||
e9f207f0 JB |
1875 | ieee80211_debugfs_netdev_init(); |
1876 | ||
f0706e82 | 1877 | return 0; |
ad018375 | 1878 | |
3eadf5f4 | 1879 | out_cleanup_pid: |
4b475898 | 1880 | rc80211_pid_exit(); |
3eadf5f4 | 1881 | out: |
ad018375 | 1882 | return ret; |
f0706e82 JB |
1883 | } |
1884 | ||
f0706e82 JB |
1885 | static void __exit ieee80211_exit(void) |
1886 | { | |
4b475898 | 1887 | rc80211_pid_exit(); |
ac71c691 | 1888 | |
3b96766f JB |
1889 | /* |
1890 | * For key todo, it'll be empty by now but the work | |
1891 | * might still be scheduled. | |
1892 | */ | |
1893 | flush_scheduled_work(); | |
1894 | ||
f7a92144 LCC |
1895 | if (mesh_allocated) |
1896 | ieee80211s_stop(); | |
902acc78 | 1897 | |
f0706e82 | 1898 | ieee80211_wme_unregister(); |
e9f207f0 | 1899 | ieee80211_debugfs_netdev_exit(); |
f0706e82 JB |
1900 | } |
1901 | ||
1902 | ||
ca9938fe | 1903 | subsys_initcall(ieee80211_init); |
f0706e82 JB |
1904 | module_exit(ieee80211_exit); |
1905 | ||
1906 | MODULE_DESCRIPTION("IEEE 802.11 subsystem"); | |
1907 | MODULE_LICENSE("GPL"); |