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 | ||
07346f81 | 349 | /* no locking required since STA is not live yet */ |
636c5d48 JB |
350 | sta->flags |= WLAN_STA_AUTHORIZED; |
351 | ||
352 | res = sta_info_insert(sta); | |
353 | if (res) { | |
354 | /* STA has been freed */ | |
355 | goto err_del_interface; | |
356 | } | |
357 | } | |
358 | ||
4150c572 JB |
359 | if (local->open_count == 0) { |
360 | res = dev_open(local->mdev); | |
361 | WARN_ON(res); | |
636c5d48 JB |
362 | if (res) |
363 | goto err_del_interface; | |
4150c572 JB |
364 | tasklet_enable(&local->tx_pending_tasklet); |
365 | tasklet_enable(&local->tasklet); | |
366 | } | |
367 | ||
c1428b3f JB |
368 | /* |
369 | * set_multicast_list will be invoked by the networking core | |
370 | * which will check whether any increments here were done in | |
371 | * error and sync them down to the hardware as filter flags. | |
372 | */ | |
373 | if (sdata->flags & IEEE80211_SDATA_ALLMULTI) | |
374 | atomic_inc(&local->iff_allmultis); | |
375 | ||
376 | if (sdata->flags & IEEE80211_SDATA_PROMISC) | |
377 | atomic_inc(&local->iff_promiscs); | |
378 | ||
4150c572 | 379 | local->open_count++; |
ceffefd1 MB |
380 | if (need_hw_reconfig) |
381 | ieee80211_hw_config(local); | |
f0706e82 | 382 | |
64f851e4 JN |
383 | /* |
384 | * ieee80211_sta_work is disabled while network interface | |
385 | * is down. Therefore, some configuration changes may not | |
386 | * yet be effective. Trigger execution of ieee80211_sta_work | |
387 | * to fix this. | |
388 | */ | |
988c0f72 JB |
389 | if (sdata->vif.type == IEEE80211_IF_TYPE_STA || |
390 | sdata->vif.type == IEEE80211_IF_TYPE_IBSS) { | |
64f851e4 JN |
391 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; |
392 | queue_work(local->hw.workqueue, &ifsta->work); | |
393 | } | |
394 | ||
b2c258fb | 395 | netif_start_queue(dev); |
4150c572 | 396 | |
b2c258fb | 397 | return 0; |
636c5d48 JB |
398 | err_del_interface: |
399 | local->ops->remove_interface(local_to_hw(local), &conf); | |
400 | err_stop: | |
401 | if (!local->open_count && local->ops->stop) | |
402 | local->ops->stop(local_to_hw(local)); | |
403 | return res; | |
f0706e82 | 404 | } |
f0706e82 | 405 | |
4150c572 | 406 | static int ieee80211_stop(struct net_device *dev) |
f0706e82 | 407 | { |
44213b5e JB |
408 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
409 | struct ieee80211_local *local = sdata->local; | |
4150c572 | 410 | struct ieee80211_if_init_conf conf; |
07db2183 | 411 | struct sta_info *sta; |
4150c572 | 412 | |
44213b5e JB |
413 | /* |
414 | * Stop TX on this interface first. | |
415 | */ | |
416 | netif_stop_queue(dev); | |
4150c572 | 417 | |
44213b5e JB |
418 | /* |
419 | * Now delete all active aggregation sessions. | |
420 | */ | |
d0709a65 JB |
421 | rcu_read_lock(); |
422 | ||
423 | list_for_each_entry_rcu(sta, &local->sta_list, list) { | |
424 | if (sta->sdata == sdata) | |
85249e5f | 425 | ieee80211_sta_tear_down_BA_sessions(dev, sta->addr); |
07db2183 RR |
426 | } |
427 | ||
d0709a65 JB |
428 | rcu_read_unlock(); |
429 | ||
44213b5e JB |
430 | /* |
431 | * Remove all stations associated with this interface. | |
432 | * | |
433 | * This must be done before calling ops->remove_interface() | |
434 | * because otherwise we can later invoke ops->sta_notify() | |
435 | * whenever the STAs are removed, and that invalidates driver | |
436 | * assumptions about always getting a vif pointer that is valid | |
437 | * (because if we remove a STA after ops->remove_interface() | |
438 | * the driver will have removed the vif info already!) | |
439 | * | |
440 | * We could relax this and only unlink the stations from the | |
441 | * hash table and list but keep them on a per-sdata list that | |
442 | * will be inserted back again when the interface is brought | |
443 | * up again, but I don't currently see a use case for that, | |
444 | * except with WDS which gets a STA entry created when it is | |
445 | * brought up. | |
446 | */ | |
447 | sta_info_flush(local, sdata); | |
4150c572 | 448 | |
c1428b3f JB |
449 | /* |
450 | * Don't count this interface for promisc/allmulti while it | |
451 | * is down. dev_mc_unsync() will invoke set_multicast_list | |
452 | * on the master interface which will sync these down to the | |
453 | * hardware as filter flags. | |
454 | */ | |
455 | if (sdata->flags & IEEE80211_SDATA_ALLMULTI) | |
456 | atomic_dec(&local->iff_allmultis); | |
457 | ||
458 | if (sdata->flags & IEEE80211_SDATA_PROMISC) | |
459 | atomic_dec(&local->iff_promiscs); | |
460 | ||
4150c572 JB |
461 | dev_mc_unsync(local->mdev, dev); |
462 | ||
5dfdaf58 | 463 | /* APs need special treatment */ |
51fb61e7 | 464 | if (sdata->vif.type == IEEE80211_IF_TYPE_AP) { |
0ec3ca44 | 465 | struct ieee80211_sub_if_data *vlan, *tmp; |
5dfdaf58 | 466 | struct beacon_data *old_beacon = sdata->u.ap.beacon; |
0ec3ca44 | 467 | |
5dfdaf58 JB |
468 | /* remove beacon */ |
469 | rcu_assign_pointer(sdata->u.ap.beacon, NULL); | |
470 | synchronize_rcu(); | |
471 | kfree(old_beacon); | |
472 | ||
473 | /* down all dependent devices, that is VLANs */ | |
0ec3ca44 JB |
474 | list_for_each_entry_safe(vlan, tmp, &sdata->u.ap.vlans, |
475 | u.vlan.list) | |
476 | dev_close(vlan->dev); | |
477 | WARN_ON(!list_empty(&sdata->u.ap.vlans)); | |
478 | } | |
479 | ||
4150c572 | 480 | local->open_count--; |
f0706e82 | 481 | |
51fb61e7 | 482 | switch (sdata->vif.type) { |
0ec3ca44 JB |
483 | case IEEE80211_IF_TYPE_VLAN: |
484 | list_del(&sdata->u.vlan.list); | |
485 | sdata->u.vlan.ap = NULL; | |
486 | /* no need to tell driver */ | |
487 | break; | |
4150c572 | 488 | case IEEE80211_IF_TYPE_MNTR: |
3d30d949 MW |
489 | if (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES) { |
490 | local->cooked_mntrs--; | |
491 | break; | |
492 | } | |
493 | ||
4150c572 | 494 | local->monitors--; |
8cc9a739 | 495 | if (local->monitors == 0) |
8b393f1d | 496 | local->hw.conf.flags &= ~IEEE80211_CONF_RADIOTAP; |
8cc9a739 MW |
497 | |
498 | if (sdata->u.mntr_flags & MONITOR_FLAG_FCSFAIL) | |
499 | local->fif_fcsfail--; | |
500 | if (sdata->u.mntr_flags & MONITOR_FLAG_PLCPFAIL) | |
501 | local->fif_plcpfail--; | |
502 | if (sdata->u.mntr_flags & MONITOR_FLAG_CONTROL) | |
503 | local->fif_control--; | |
504 | if (sdata->u.mntr_flags & MONITOR_FLAG_OTHER_BSS) | |
505 | local->fif_other_bss--; | |
506 | ||
507 | netif_tx_lock_bh(local->mdev); | |
508 | ieee80211_configure_filter(local); | |
509 | netif_tx_unlock_bh(local->mdev); | |
4150c572 | 510 | break; |
f7a92144 | 511 | case IEEE80211_IF_TYPE_MESH_POINT: |
b2c258fb JB |
512 | case IEEE80211_IF_TYPE_STA: |
513 | case IEEE80211_IF_TYPE_IBSS: | |
514 | sdata->u.sta.state = IEEE80211_DISABLED; | |
515 | del_timer_sync(&sdata->u.sta.timer); | |
2a8a9a88 | 516 | /* |
79010420 JB |
517 | * When we get here, the interface is marked down. |
518 | * Call synchronize_rcu() to wait for the RX path | |
519 | * should it be using the interface and enqueuing | |
520 | * frames at this very time on another CPU. | |
2a8a9a88 | 521 | */ |
79010420 | 522 | synchronize_rcu(); |
b2c258fb | 523 | skb_queue_purge(&sdata->u.sta.skb_queue); |
2a8a9a88 | 524 | |
ece8eddd ZY |
525 | if (local->scan_dev == sdata->dev) { |
526 | if (!local->ops->hw_scan) { | |
527 | local->sta_sw_scanning = 0; | |
528 | cancel_delayed_work(&local->scan_work); | |
529 | } else | |
530 | local->sta_hw_scanning = 0; | |
b2c258fb | 531 | } |
ece8eddd | 532 | |
b2c258fb | 533 | flush_workqueue(local->hw.workqueue); |
a10605e5 ZY |
534 | |
535 | sdata->u.sta.flags &= ~IEEE80211_STA_PRIVACY_INVOKED; | |
536 | kfree(sdata->u.sta.extra_ie); | |
537 | sdata->u.sta.extra_ie = NULL; | |
538 | sdata->u.sta.extra_ie_len = 0; | |
4150c572 JB |
539 | /* fall through */ |
540 | default: | |
32bfd35d | 541 | conf.vif = &sdata->vif; |
51fb61e7 | 542 | conf.type = sdata->vif.type; |
4150c572 | 543 | conf.mac_addr = dev->dev_addr; |
11a843b7 JB |
544 | /* disable all keys for as long as this netdev is down */ |
545 | ieee80211_disable_keys(sdata); | |
4150c572 | 546 | local->ops->remove_interface(local_to_hw(local), &conf); |
f0706e82 JB |
547 | } |
548 | ||
b2c258fb JB |
549 | if (local->open_count == 0) { |
550 | if (netif_running(local->mdev)) | |
551 | dev_close(local->mdev); | |
4150c572 | 552 | |
b2c258fb JB |
553 | if (local->ops->stop) |
554 | local->ops->stop(local_to_hw(local)); | |
4150c572 | 555 | |
cdcb006f ID |
556 | ieee80211_led_radio(local, 0); |
557 | ||
b2c258fb JB |
558 | tasklet_disable(&local->tx_pending_tasklet); |
559 | tasklet_disable(&local->tasklet); | |
560 | } | |
b2c258fb | 561 | |
f0706e82 JB |
562 | return 0; |
563 | } | |
564 | ||
eadc8d9e RR |
565 | int ieee80211_start_tx_ba_session(struct ieee80211_hw *hw, u8 *ra, u16 tid) |
566 | { | |
567 | struct ieee80211_local *local = hw_to_local(hw); | |
568 | struct sta_info *sta; | |
569 | struct ieee80211_sub_if_data *sdata; | |
570 | u16 start_seq_num = 0; | |
571 | u8 *state; | |
572 | int ret; | |
573 | DECLARE_MAC_BUF(mac); | |
574 | ||
575 | if (tid >= STA_TID_NUM) | |
576 | return -EINVAL; | |
577 | ||
578 | #ifdef CONFIG_MAC80211_HT_DEBUG | |
579 | printk(KERN_DEBUG "Open BA session requested for %s tid %u\n", | |
580 | print_mac(mac, ra), tid); | |
581 | #endif /* CONFIG_MAC80211_HT_DEBUG */ | |
582 | ||
d0709a65 JB |
583 | rcu_read_lock(); |
584 | ||
eadc8d9e RR |
585 | sta = sta_info_get(local, ra); |
586 | if (!sta) { | |
587 | printk(KERN_DEBUG "Could not find the station\n"); | |
d0709a65 | 588 | rcu_read_unlock(); |
eadc8d9e RR |
589 | return -ENOENT; |
590 | } | |
591 | ||
07346f81 | 592 | spin_lock_bh(&sta->lock); |
eadc8d9e RR |
593 | |
594 | /* we have tried too many times, receiver does not want A-MPDU */ | |
cee24a3e | 595 | if (sta->ampdu_mlme.addba_req_num[tid] > HT_AGG_MAX_RETRIES) { |
eadc8d9e RR |
596 | ret = -EBUSY; |
597 | goto start_ba_exit; | |
598 | } | |
599 | ||
cee24a3e | 600 | state = &sta->ampdu_mlme.tid_state_tx[tid]; |
eadc8d9e RR |
601 | /* check if the TID is not in aggregation flow already */ |
602 | if (*state != HT_AGG_STATE_IDLE) { | |
603 | #ifdef CONFIG_MAC80211_HT_DEBUG | |
604 | printk(KERN_DEBUG "BA request denied - session is not " | |
605 | "idle on tid %u\n", tid); | |
606 | #endif /* CONFIG_MAC80211_HT_DEBUG */ | |
607 | ret = -EAGAIN; | |
608 | goto start_ba_exit; | |
609 | } | |
610 | ||
cee24a3e RR |
611 | /* prepare A-MPDU MLME for Tx aggregation */ |
612 | sta->ampdu_mlme.tid_tx[tid] = | |
613 | kmalloc(sizeof(struct tid_ampdu_tx), GFP_ATOMIC); | |
614 | if (!sta->ampdu_mlme.tid_tx[tid]) { | |
615 | if (net_ratelimit()) | |
616 | printk(KERN_ERR "allocate tx mlme to tid %d failed\n", | |
617 | tid); | |
618 | ret = -ENOMEM; | |
619 | goto start_ba_exit; | |
620 | } | |
621 | /* Tx timer */ | |
622 | sta->ampdu_mlme.tid_tx[tid]->addba_resp_timer.function = | |
623 | sta_addba_resp_timer_expired; | |
624 | sta->ampdu_mlme.tid_tx[tid]->addba_resp_timer.data = | |
625 | (unsigned long)&sta->timer_to_tid[tid]; | |
626 | init_timer(&sta->ampdu_mlme.tid_tx[tid]->addba_resp_timer); | |
627 | ||
eadc8d9e RR |
628 | /* ensure that TX flow won't interrupt us |
629 | * until the end of the call to requeue function */ | |
630 | spin_lock_bh(&local->mdev->queue_lock); | |
631 | ||
632 | /* create a new queue for this aggregation */ | |
9e723492 | 633 | ret = ieee80211_ht_agg_queue_add(local, sta, tid); |
eadc8d9e RR |
634 | |
635 | /* case no queue is available to aggregation | |
636 | * don't switch to aggregation */ | |
637 | if (ret) { | |
638 | #ifdef CONFIG_MAC80211_HT_DEBUG | |
cee24a3e | 639 | printk(KERN_DEBUG "BA request denied - queue unavailable for" |
eadc8d9e RR |
640 | " tid %d\n", tid); |
641 | #endif /* CONFIG_MAC80211_HT_DEBUG */ | |
cee24a3e | 642 | goto start_ba_err; |
eadc8d9e | 643 | } |
d0709a65 | 644 | sdata = sta->sdata; |
eadc8d9e RR |
645 | |
646 | /* Ok, the Addba frame hasn't been sent yet, but if the driver calls the | |
647 | * call back right away, it must see that the flow has begun */ | |
648 | *state |= HT_ADDBA_REQUESTED_MSK; | |
649 | ||
650 | if (local->ops->ampdu_action) | |
651 | ret = local->ops->ampdu_action(hw, IEEE80211_AMPDU_TX_START, | |
652 | ra, tid, &start_seq_num); | |
653 | ||
654 | if (ret) { | |
655 | /* No need to requeue the packets in the agg queue, since we | |
656 | * held the tx lock: no packet could be enqueued to the newly | |
657 | * allocated queue */ | |
9e723492 | 658 | ieee80211_ht_agg_queue_remove(local, sta, tid, 0); |
eadc8d9e | 659 | #ifdef CONFIG_MAC80211_HT_DEBUG |
cee24a3e RR |
660 | printk(KERN_DEBUG "BA request denied - HW unavailable for" |
661 | " tid %d\n", tid); | |
eadc8d9e | 662 | #endif /* CONFIG_MAC80211_HT_DEBUG */ |
eadc8d9e | 663 | *state = HT_AGG_STATE_IDLE; |
cee24a3e | 664 | goto start_ba_err; |
eadc8d9e RR |
665 | } |
666 | ||
667 | /* Will put all the packets in the new SW queue */ | |
9e723492 | 668 | ieee80211_requeue(local, ieee802_1d_to_ac[tid]); |
eadc8d9e RR |
669 | spin_unlock_bh(&local->mdev->queue_lock); |
670 | ||
eadc8d9e RR |
671 | /* send an addBA request */ |
672 | sta->ampdu_mlme.dialog_token_allocator++; | |
cee24a3e | 673 | sta->ampdu_mlme.tid_tx[tid]->dialog_token = |
eadc8d9e | 674 | sta->ampdu_mlme.dialog_token_allocator; |
cee24a3e | 675 | sta->ampdu_mlme.tid_tx[tid]->ssn = start_seq_num; |
eadc8d9e | 676 | |
d0709a65 | 677 | ieee80211_send_addba_request(sta->sdata->dev, ra, tid, |
cee24a3e RR |
678 | sta->ampdu_mlme.tid_tx[tid]->dialog_token, |
679 | sta->ampdu_mlme.tid_tx[tid]->ssn, | |
eadc8d9e RR |
680 | 0x40, 5000); |
681 | ||
682 | /* activate the timer for the recipient's addBA response */ | |
cee24a3e | 683 | sta->ampdu_mlme.tid_tx[tid]->addba_resp_timer.expires = |
eadc8d9e | 684 | jiffies + ADDBA_RESP_INTERVAL; |
cee24a3e | 685 | add_timer(&sta->ampdu_mlme.tid_tx[tid]->addba_resp_timer); |
eadc8d9e | 686 | printk(KERN_DEBUG "activated addBA response timer on tid %d\n", tid); |
cee24a3e | 687 | goto start_ba_exit; |
eadc8d9e | 688 | |
cee24a3e RR |
689 | start_ba_err: |
690 | kfree(sta->ampdu_mlme.tid_tx[tid]); | |
691 | sta->ampdu_mlme.tid_tx[tid] = NULL; | |
692 | spin_unlock_bh(&local->mdev->queue_lock); | |
693 | ret = -EBUSY; | |
eadc8d9e | 694 | start_ba_exit: |
07346f81 | 695 | spin_unlock_bh(&sta->lock); |
d0709a65 | 696 | rcu_read_unlock(); |
eadc8d9e RR |
697 | return ret; |
698 | } | |
699 | EXPORT_SYMBOL(ieee80211_start_tx_ba_session); | |
700 | ||
701 | int ieee80211_stop_tx_ba_session(struct ieee80211_hw *hw, | |
702 | u8 *ra, u16 tid, | |
703 | enum ieee80211_back_parties initiator) | |
704 | { | |
705 | struct ieee80211_local *local = hw_to_local(hw); | |
706 | struct sta_info *sta; | |
707 | u8 *state; | |
708 | int ret = 0; | |
709 | DECLARE_MAC_BUF(mac); | |
710 | ||
711 | if (tid >= STA_TID_NUM) | |
712 | return -EINVAL; | |
713 | ||
d0709a65 | 714 | rcu_read_lock(); |
eadc8d9e | 715 | sta = sta_info_get(local, ra); |
d0709a65 JB |
716 | if (!sta) { |
717 | rcu_read_unlock(); | |
eadc8d9e | 718 | return -ENOENT; |
d0709a65 | 719 | } |
eadc8d9e RR |
720 | |
721 | /* check if the TID is in aggregation */ | |
cee24a3e | 722 | state = &sta->ampdu_mlme.tid_state_tx[tid]; |
07346f81 | 723 | spin_lock_bh(&sta->lock); |
eadc8d9e RR |
724 | |
725 | if (*state != HT_AGG_STATE_OPERATIONAL) { | |
eadc8d9e RR |
726 | ret = -ENOENT; |
727 | goto stop_BA_exit; | |
728 | } | |
729 | ||
513a1025 RR |
730 | #ifdef CONFIG_MAC80211_HT_DEBUG |
731 | printk(KERN_DEBUG "Tx BA session stop requested for %s tid %u\n", | |
732 | print_mac(mac, ra), tid); | |
733 | #endif /* CONFIG_MAC80211_HT_DEBUG */ | |
734 | ||
eadc8d9e RR |
735 | ieee80211_stop_queue(hw, sta->tid_to_tx_q[tid]); |
736 | ||
737 | *state = HT_AGG_STATE_REQ_STOP_BA_MSK | | |
738 | (initiator << HT_AGG_STATE_INITIATOR_SHIFT); | |
739 | ||
740 | if (local->ops->ampdu_action) | |
741 | ret = local->ops->ampdu_action(hw, IEEE80211_AMPDU_TX_STOP, | |
742 | ra, tid, NULL); | |
743 | ||
744 | /* case HW denied going back to legacy */ | |
745 | if (ret) { | |
746 | WARN_ON(ret != -EBUSY); | |
747 | *state = HT_AGG_STATE_OPERATIONAL; | |
748 | ieee80211_wake_queue(hw, sta->tid_to_tx_q[tid]); | |
749 | goto stop_BA_exit; | |
750 | } | |
751 | ||
752 | stop_BA_exit: | |
07346f81 | 753 | spin_unlock_bh(&sta->lock); |
d0709a65 | 754 | rcu_read_unlock(); |
eadc8d9e RR |
755 | return ret; |
756 | } | |
757 | EXPORT_SYMBOL(ieee80211_stop_tx_ba_session); | |
758 | ||
759 | void ieee80211_start_tx_ba_cb(struct ieee80211_hw *hw, u8 *ra, u16 tid) | |
760 | { | |
761 | struct ieee80211_local *local = hw_to_local(hw); | |
762 | struct sta_info *sta; | |
763 | u8 *state; | |
764 | DECLARE_MAC_BUF(mac); | |
765 | ||
766 | if (tid >= STA_TID_NUM) { | |
767 | printk(KERN_DEBUG "Bad TID value: tid = %d (>= %d)\n", | |
768 | tid, STA_TID_NUM); | |
769 | return; | |
770 | } | |
771 | ||
d0709a65 | 772 | rcu_read_lock(); |
eadc8d9e RR |
773 | sta = sta_info_get(local, ra); |
774 | if (!sta) { | |
d0709a65 | 775 | rcu_read_unlock(); |
eadc8d9e RR |
776 | printk(KERN_DEBUG "Could not find station: %s\n", |
777 | print_mac(mac, ra)); | |
778 | return; | |
779 | } | |
780 | ||
cee24a3e | 781 | state = &sta->ampdu_mlme.tid_state_tx[tid]; |
07346f81 | 782 | spin_lock_bh(&sta->lock); |
eadc8d9e RR |
783 | |
784 | if (!(*state & HT_ADDBA_REQUESTED_MSK)) { | |
785 | printk(KERN_DEBUG "addBA was not requested yet, state is %d\n", | |
786 | *state); | |
07346f81 | 787 | spin_unlock_bh(&sta->lock); |
d0709a65 | 788 | rcu_read_unlock(); |
eadc8d9e RR |
789 | return; |
790 | } | |
791 | ||
792 | WARN_ON_ONCE(*state & HT_ADDBA_DRV_READY_MSK); | |
793 | ||
794 | *state |= HT_ADDBA_DRV_READY_MSK; | |
795 | ||
796 | if (*state == HT_AGG_STATE_OPERATIONAL) { | |
797 | printk(KERN_DEBUG "Aggregation is on for tid %d \n", tid); | |
798 | ieee80211_wake_queue(hw, sta->tid_to_tx_q[tid]); | |
799 | } | |
07346f81 | 800 | spin_unlock_bh(&sta->lock); |
d0709a65 | 801 | rcu_read_unlock(); |
eadc8d9e RR |
802 | } |
803 | EXPORT_SYMBOL(ieee80211_start_tx_ba_cb); | |
804 | ||
805 | void ieee80211_stop_tx_ba_cb(struct ieee80211_hw *hw, u8 *ra, u8 tid) | |
806 | { | |
807 | struct ieee80211_local *local = hw_to_local(hw); | |
808 | struct sta_info *sta; | |
809 | u8 *state; | |
810 | int agg_queue; | |
811 | DECLARE_MAC_BUF(mac); | |
812 | ||
813 | if (tid >= STA_TID_NUM) { | |
814 | printk(KERN_DEBUG "Bad TID value: tid = %d (>= %d)\n", | |
815 | tid, STA_TID_NUM); | |
816 | return; | |
817 | } | |
818 | ||
513a1025 RR |
819 | #ifdef CONFIG_MAC80211_HT_DEBUG |
820 | printk(KERN_DEBUG "Stopping Tx BA session for %s tid %d\n", | |
eadc8d9e | 821 | print_mac(mac, ra), tid); |
513a1025 | 822 | #endif /* CONFIG_MAC80211_HT_DEBUG */ |
eadc8d9e | 823 | |
d0709a65 | 824 | rcu_read_lock(); |
eadc8d9e RR |
825 | sta = sta_info_get(local, ra); |
826 | if (!sta) { | |
827 | printk(KERN_DEBUG "Could not find station: %s\n", | |
828 | print_mac(mac, ra)); | |
d0709a65 | 829 | rcu_read_unlock(); |
eadc8d9e RR |
830 | return; |
831 | } | |
cee24a3e | 832 | state = &sta->ampdu_mlme.tid_state_tx[tid]; |
eadc8d9e | 833 | |
07346f81 | 834 | spin_lock_bh(&sta->lock); |
eadc8d9e RR |
835 | if ((*state & HT_AGG_STATE_REQ_STOP_BA_MSK) == 0) { |
836 | printk(KERN_DEBUG "unexpected callback to A-MPDU stop\n"); | |
07346f81 | 837 | spin_unlock_bh(&sta->lock); |
d0709a65 | 838 | rcu_read_unlock(); |
eadc8d9e RR |
839 | return; |
840 | } | |
841 | ||
842 | if (*state & HT_AGG_STATE_INITIATOR_MSK) | |
d0709a65 | 843 | ieee80211_send_delba(sta->sdata->dev, ra, tid, |
eadc8d9e RR |
844 | WLAN_BACK_INITIATOR, WLAN_REASON_QSTA_NOT_USE); |
845 | ||
846 | agg_queue = sta->tid_to_tx_q[tid]; | |
847 | ||
848 | /* avoid ordering issues: we are the only one that can modify | |
849 | * the content of the qdiscs */ | |
850 | spin_lock_bh(&local->mdev->queue_lock); | |
851 | /* remove the queue for this aggregation */ | |
9e723492 | 852 | ieee80211_ht_agg_queue_remove(local, sta, tid, 1); |
eadc8d9e RR |
853 | spin_unlock_bh(&local->mdev->queue_lock); |
854 | ||
855 | /* we just requeued the all the frames that were in the removed | |
856 | * queue, and since we might miss a softirq we do netif_schedule. | |
857 | * ieee80211_wake_queue is not used here as this queue is not | |
858 | * necessarily stopped */ | |
859 | netif_schedule(local->mdev); | |
860 | *state = HT_AGG_STATE_IDLE; | |
cee24a3e RR |
861 | sta->ampdu_mlme.addba_req_num[tid] = 0; |
862 | kfree(sta->ampdu_mlme.tid_tx[tid]); | |
863 | sta->ampdu_mlme.tid_tx[tid] = NULL; | |
07346f81 | 864 | spin_unlock_bh(&sta->lock); |
eadc8d9e | 865 | |
d0709a65 | 866 | rcu_read_unlock(); |
eadc8d9e RR |
867 | } |
868 | EXPORT_SYMBOL(ieee80211_stop_tx_ba_cb); | |
869 | ||
870 | void ieee80211_start_tx_ba_cb_irqsafe(struct ieee80211_hw *hw, | |
871 | const u8 *ra, u16 tid) | |
872 | { | |
873 | struct ieee80211_local *local = hw_to_local(hw); | |
874 | struct ieee80211_ra_tid *ra_tid; | |
875 | struct sk_buff *skb = dev_alloc_skb(0); | |
876 | ||
877 | if (unlikely(!skb)) { | |
878 | if (net_ratelimit()) | |
879 | printk(KERN_WARNING "%s: Not enough memory, " | |
880 | "dropping start BA session", skb->dev->name); | |
881 | return; | |
882 | } | |
883 | ra_tid = (struct ieee80211_ra_tid *) &skb->cb; | |
884 | memcpy(&ra_tid->ra, ra, ETH_ALEN); | |
885 | ra_tid->tid = tid; | |
886 | ||
887 | skb->pkt_type = IEEE80211_ADDBA_MSG; | |
888 | skb_queue_tail(&local->skb_queue, skb); | |
889 | tasklet_schedule(&local->tasklet); | |
890 | } | |
891 | EXPORT_SYMBOL(ieee80211_start_tx_ba_cb_irqsafe); | |
892 | ||
893 | void ieee80211_stop_tx_ba_cb_irqsafe(struct ieee80211_hw *hw, | |
894 | const u8 *ra, u16 tid) | |
895 | { | |
896 | struct ieee80211_local *local = hw_to_local(hw); | |
897 | struct ieee80211_ra_tid *ra_tid; | |
898 | struct sk_buff *skb = dev_alloc_skb(0); | |
899 | ||
900 | if (unlikely(!skb)) { | |
901 | if (net_ratelimit()) | |
902 | printk(KERN_WARNING "%s: Not enough memory, " | |
903 | "dropping stop BA session", skb->dev->name); | |
904 | return; | |
905 | } | |
906 | ra_tid = (struct ieee80211_ra_tid *) &skb->cb; | |
907 | memcpy(&ra_tid->ra, ra, ETH_ALEN); | |
908 | ra_tid->tid = tid; | |
909 | ||
910 | skb->pkt_type = IEEE80211_DELBA_MSG; | |
911 | skb_queue_tail(&local->skb_queue, skb); | |
912 | tasklet_schedule(&local->tasklet); | |
913 | } | |
914 | EXPORT_SYMBOL(ieee80211_stop_tx_ba_cb_irqsafe); | |
915 | ||
f0706e82 JB |
916 | static void ieee80211_set_multicast_list(struct net_device *dev) |
917 | { | |
918 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
919 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
4150c572 | 920 | int allmulti, promisc, sdata_allmulti, sdata_promisc; |
f0706e82 | 921 | |
4150c572 JB |
922 | allmulti = !!(dev->flags & IFF_ALLMULTI); |
923 | promisc = !!(dev->flags & IFF_PROMISC); | |
b52f2198 JB |
924 | sdata_allmulti = !!(sdata->flags & IEEE80211_SDATA_ALLMULTI); |
925 | sdata_promisc = !!(sdata->flags & IEEE80211_SDATA_PROMISC); | |
4150c572 JB |
926 | |
927 | if (allmulti != sdata_allmulti) { | |
928 | if (dev->flags & IFF_ALLMULTI) | |
53918994 | 929 | atomic_inc(&local->iff_allmultis); |
4150c572 | 930 | else |
53918994 | 931 | atomic_dec(&local->iff_allmultis); |
13262ffd | 932 | sdata->flags ^= IEEE80211_SDATA_ALLMULTI; |
f0706e82 | 933 | } |
4150c572 JB |
934 | |
935 | if (promisc != sdata_promisc) { | |
936 | if (dev->flags & IFF_PROMISC) | |
53918994 | 937 | atomic_inc(&local->iff_promiscs); |
4150c572 | 938 | else |
53918994 | 939 | atomic_dec(&local->iff_promiscs); |
13262ffd | 940 | sdata->flags ^= IEEE80211_SDATA_PROMISC; |
f0706e82 | 941 | } |
4150c572 JB |
942 | |
943 | dev_mc_sync(local->mdev, dev); | |
f0706e82 JB |
944 | } |
945 | ||
3b04ddde SH |
946 | static const struct header_ops ieee80211_header_ops = { |
947 | .create = eth_header, | |
948 | .parse = header_parse_80211, | |
949 | .rebuild = eth_rebuild_header, | |
950 | .cache = eth_header_cache, | |
951 | .cache_update = eth_header_cache_update, | |
952 | }; | |
953 | ||
f9d540ee | 954 | /* Must not be called for mdev */ |
b2c258fb | 955 | void ieee80211_if_setup(struct net_device *dev) |
f0706e82 | 956 | { |
b2c258fb JB |
957 | ether_setup(dev); |
958 | dev->hard_start_xmit = ieee80211_subif_start_xmit; | |
959 | dev->wireless_handlers = &ieee80211_iw_handler_def; | |
960 | dev->set_multicast_list = ieee80211_set_multicast_list; | |
961 | dev->change_mtu = ieee80211_change_mtu; | |
b2c258fb JB |
962 | dev->open = ieee80211_open; |
963 | dev->stop = ieee80211_stop; | |
b2c258fb JB |
964 | dev->destructor = ieee80211_if_free; |
965 | } | |
f0706e82 | 966 | |
b2c258fb JB |
967 | /* everything else */ |
968 | ||
b2c258fb JB |
969 | static int __ieee80211_if_config(struct net_device *dev, |
970 | struct sk_buff *beacon, | |
971 | struct ieee80211_tx_control *control) | |
972 | { | |
973 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
974 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
975 | struct ieee80211_if_conf conf; | |
b2c258fb JB |
976 | |
977 | if (!local->ops->config_interface || !netif_running(dev)) | |
f0706e82 | 978 | return 0; |
f0706e82 | 979 | |
b2c258fb | 980 | memset(&conf, 0, sizeof(conf)); |
51fb61e7 JB |
981 | conf.type = sdata->vif.type; |
982 | if (sdata->vif.type == IEEE80211_IF_TYPE_STA || | |
983 | sdata->vif.type == IEEE80211_IF_TYPE_IBSS) { | |
4150c572 | 984 | conf.bssid = sdata->u.sta.bssid; |
b2c258fb JB |
985 | conf.ssid = sdata->u.sta.ssid; |
986 | conf.ssid_len = sdata->u.sta.ssid_len; | |
902acc78 | 987 | } else if (ieee80211_vif_is_mesh(&sdata->vif)) { |
f7a92144 | 988 | conf.beacon = beacon; |
8b808bf2 | 989 | conf.beacon_control = control; |
f7a92144 | 990 | ieee80211_start_mesh(dev); |
51fb61e7 | 991 | } else if (sdata->vif.type == IEEE80211_IF_TYPE_AP) { |
b2c258fb JB |
992 | conf.ssid = sdata->u.ap.ssid; |
993 | conf.ssid_len = sdata->u.ap.ssid_len; | |
b2c258fb JB |
994 | conf.beacon = beacon; |
995 | conf.beacon_control = control; | |
f0706e82 | 996 | } |
b2c258fb | 997 | return local->ops->config_interface(local_to_hw(local), |
32bfd35d | 998 | &sdata->vif, &conf); |
f0706e82 JB |
999 | } |
1000 | ||
b2c258fb JB |
1001 | int ieee80211_if_config(struct net_device *dev) |
1002 | { | |
f7a92144 LCC |
1003 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
1004 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
1005 | if (sdata->vif.type == IEEE80211_IF_TYPE_MESH_POINT && | |
1006 | (local->hw.flags & IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE)) | |
1007 | return ieee80211_if_config_beacon(dev); | |
b2c258fb JB |
1008 | return __ieee80211_if_config(dev, NULL, NULL); |
1009 | } | |
f0706e82 | 1010 | |
b2c258fb | 1011 | int ieee80211_if_config_beacon(struct net_device *dev) |
f0706e82 | 1012 | { |
f0706e82 | 1013 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); |
b2c258fb | 1014 | struct ieee80211_tx_control control; |
32bfd35d | 1015 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
b2c258fb | 1016 | struct sk_buff *skb; |
f0706e82 | 1017 | |
b2c258fb | 1018 | if (!(local->hw.flags & IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE)) |
f0706e82 | 1019 | return 0; |
32bfd35d JB |
1020 | skb = ieee80211_beacon_get(local_to_hw(local), &sdata->vif, |
1021 | &control); | |
b2c258fb JB |
1022 | if (!skb) |
1023 | return -ENOMEM; | |
1024 | return __ieee80211_if_config(dev, skb, &control); | |
1025 | } | |
f0706e82 | 1026 | |
b2c258fb JB |
1027 | int ieee80211_hw_config(struct ieee80211_local *local) |
1028 | { | |
b2c258fb JB |
1029 | struct ieee80211_channel *chan; |
1030 | int ret = 0; | |
f0706e82 | 1031 | |
8318d78a | 1032 | if (local->sta_sw_scanning) |
b2c258fb | 1033 | chan = local->scan_channel; |
8318d78a | 1034 | else |
b2c258fb | 1035 | chan = local->oper_channel; |
f0706e82 | 1036 | |
8318d78a JB |
1037 | local->hw.conf.channel = chan; |
1038 | ||
1039 | if (!local->hw.conf.power_level) | |
1040 | local->hw.conf.power_level = chan->max_power; | |
1041 | else | |
1042 | local->hw.conf.power_level = min(chan->max_power, | |
1043 | local->hw.conf.power_level); | |
1044 | ||
1045 | local->hw.conf.max_antenna_gain = chan->max_antenna_gain; | |
f0706e82 | 1046 | |
b2c258fb | 1047 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
8318d78a JB |
1048 | printk(KERN_DEBUG "%s: HW CONFIG: freq=%d\n", |
1049 | wiphy_name(local->hw.wiphy), chan->center_freq); | |
1050 | #endif | |
b2c258fb | 1051 | |
f7c4daed | 1052 | if (local->open_count) |
b2c258fb | 1053 | ret = local->ops->config(local_to_hw(local), &local->hw.conf); |
f0706e82 | 1054 | |
b2c258fb JB |
1055 | return ret; |
1056 | } | |
f0706e82 | 1057 | |
d3c990fb | 1058 | /** |
38668c05 TW |
1059 | * ieee80211_handle_ht should be used only after legacy configuration |
1060 | * has been determined namely band, as ht configuration depends upon | |
1061 | * the hardware's HT abilities for a _specific_ band. | |
d3c990fb | 1062 | */ |
38668c05 | 1063 | u32 ieee80211_handle_ht(struct ieee80211_local *local, int enable_ht, |
d3c990fb RR |
1064 | struct ieee80211_ht_info *req_ht_cap, |
1065 | struct ieee80211_ht_bss_info *req_bss_cap) | |
1066 | { | |
1067 | struct ieee80211_conf *conf = &local->hw.conf; | |
8318d78a | 1068 | struct ieee80211_supported_band *sband; |
38668c05 TW |
1069 | struct ieee80211_ht_info ht_conf; |
1070 | struct ieee80211_ht_bss_info ht_bss_conf; | |
d3c990fb | 1071 | int i; |
38668c05 | 1072 | u32 changed = 0; |
d3c990fb | 1073 | |
8318d78a JB |
1074 | sband = local->hw.wiphy->bands[conf->channel->band]; |
1075 | ||
d3c990fb | 1076 | /* HT is not supported */ |
8318d78a | 1077 | if (!sband->ht_info.ht_supported) { |
d3c990fb | 1078 | conf->flags &= ~IEEE80211_CONF_SUPPORT_HT_MODE; |
38668c05 | 1079 | return 0; |
d3c990fb RR |
1080 | } |
1081 | ||
38668c05 TW |
1082 | memset(&ht_conf, 0, sizeof(struct ieee80211_ht_info)); |
1083 | memset(&ht_bss_conf, 0, sizeof(struct ieee80211_ht_bss_info)); | |
1084 | ||
1085 | if (enable_ht) { | |
1086 | if (!(conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE)) | |
1087 | changed |= BSS_CHANGED_HT; | |
1088 | ||
d3c990fb | 1089 | conf->flags |= IEEE80211_CONF_SUPPORT_HT_MODE; |
38668c05 TW |
1090 | ht_conf.ht_supported = 1; |
1091 | ||
1092 | ht_conf.cap = req_ht_cap->cap & sband->ht_info.cap; | |
1093 | ht_conf.cap &= ~(IEEE80211_HT_CAP_MIMO_PS); | |
1094 | ht_conf.cap |= sband->ht_info.cap & IEEE80211_HT_CAP_MIMO_PS; | |
1095 | ||
d3c990fb | 1096 | for (i = 0; i < SUPP_MCS_SET_LEN; i++) |
38668c05 TW |
1097 | ht_conf.supp_mcs_set[i] = |
1098 | sband->ht_info.supp_mcs_set[i] & | |
1099 | req_ht_cap->supp_mcs_set[i]; | |
1100 | ||
1101 | ht_bss_conf.primary_channel = req_bss_cap->primary_channel; | |
1102 | ht_bss_conf.bss_cap = req_bss_cap->bss_cap; | |
1103 | ht_bss_conf.bss_op_mode = req_bss_cap->bss_op_mode; | |
1104 | ||
1105 | ht_conf.ampdu_factor = req_ht_cap->ampdu_factor; | |
1106 | ht_conf.ampdu_density = req_ht_cap->ampdu_density; | |
1107 | ||
1108 | /* if bss configuration changed store the new one */ | |
1109 | if (memcmp(&conf->ht_conf, &ht_conf, sizeof(ht_conf)) || | |
1110 | memcmp(&conf->ht_bss_conf, &ht_bss_conf, sizeof(ht_bss_conf))) { | |
1111 | changed |= BSS_CHANGED_HT; | |
1112 | memcpy(&conf->ht_conf, &ht_conf, sizeof(ht_conf)); | |
1113 | memcpy(&conf->ht_bss_conf, &ht_bss_conf, sizeof(ht_bss_conf)); | |
1114 | } | |
1115 | } else { | |
1116 | if (conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE) | |
1117 | changed |= BSS_CHANGED_HT; | |
1118 | conf->flags &= ~IEEE80211_CONF_SUPPORT_HT_MODE; | |
d3c990fb RR |
1119 | } |
1120 | ||
38668c05 | 1121 | return changed; |
d3c990fb RR |
1122 | } |
1123 | ||
471b3efd JB |
1124 | void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, |
1125 | u32 changed) | |
d9430a32 | 1126 | { |
471b3efd JB |
1127 | struct ieee80211_local *local = sdata->local; |
1128 | ||
1129 | if (!changed) | |
1130 | return; | |
1131 | ||
1132 | if (local->ops->bss_info_changed) | |
1133 | local->ops->bss_info_changed(local_to_hw(local), | |
1134 | &sdata->vif, | |
1135 | &sdata->bss_conf, | |
1136 | changed); | |
d9430a32 DD |
1137 | } |
1138 | ||
1139 | void ieee80211_reset_erp_info(struct net_device *dev) | |
1140 | { | |
1141 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
1142 | ||
471b3efd JB |
1143 | sdata->bss_conf.use_cts_prot = 0; |
1144 | sdata->bss_conf.use_short_preamble = 0; | |
1145 | ieee80211_bss_info_change_notify(sdata, | |
1146 | BSS_CHANGED_ERP_CTS_PROT | | |
1147 | BSS_CHANGED_ERP_PREAMBLE); | |
d9430a32 DD |
1148 | } |
1149 | ||
f0706e82 JB |
1150 | void ieee80211_tx_status_irqsafe(struct ieee80211_hw *hw, |
1151 | struct sk_buff *skb, | |
1152 | struct ieee80211_tx_status *status) | |
1153 | { | |
1154 | struct ieee80211_local *local = hw_to_local(hw); | |
1155 | struct ieee80211_tx_status *saved; | |
1156 | int tmp; | |
1157 | ||
1158 | skb->dev = local->mdev; | |
1159 | saved = kmalloc(sizeof(struct ieee80211_tx_status), GFP_ATOMIC); | |
1160 | if (unlikely(!saved)) { | |
1161 | if (net_ratelimit()) | |
1162 | printk(KERN_WARNING "%s: Not enough memory, " | |
1163 | "dropping tx status", skb->dev->name); | |
1164 | /* should be dev_kfree_skb_irq, but due to this function being | |
1165 | * named _irqsafe instead of just _irq we can't be sure that | |
1166 | * people won't call it from non-irq contexts */ | |
1167 | dev_kfree_skb_any(skb); | |
1168 | return; | |
1169 | } | |
1170 | memcpy(saved, status, sizeof(struct ieee80211_tx_status)); | |
1171 | /* copy pointer to saved status into skb->cb for use by tasklet */ | |
1172 | memcpy(skb->cb, &saved, sizeof(saved)); | |
1173 | ||
1174 | skb->pkt_type = IEEE80211_TX_STATUS_MSG; | |
1175 | skb_queue_tail(status->control.flags & IEEE80211_TXCTL_REQ_TX_STATUS ? | |
1176 | &local->skb_queue : &local->skb_queue_unreliable, skb); | |
1177 | tmp = skb_queue_len(&local->skb_queue) + | |
1178 | skb_queue_len(&local->skb_queue_unreliable); | |
1179 | while (tmp > IEEE80211_IRQSAFE_QUEUE_LIMIT && | |
1180 | (skb = skb_dequeue(&local->skb_queue_unreliable))) { | |
1181 | memcpy(&saved, skb->cb, sizeof(saved)); | |
1182 | kfree(saved); | |
1183 | dev_kfree_skb_irq(skb); | |
1184 | tmp--; | |
1185 | I802_DEBUG_INC(local->tx_status_drop); | |
1186 | } | |
1187 | tasklet_schedule(&local->tasklet); | |
1188 | } | |
1189 | EXPORT_SYMBOL(ieee80211_tx_status_irqsafe); | |
1190 | ||
1191 | static void ieee80211_tasklet_handler(unsigned long data) | |
1192 | { | |
1193 | struct ieee80211_local *local = (struct ieee80211_local *) data; | |
1194 | struct sk_buff *skb; | |
1195 | struct ieee80211_rx_status rx_status; | |
1196 | struct ieee80211_tx_status *tx_status; | |
eadc8d9e | 1197 | struct ieee80211_ra_tid *ra_tid; |
f0706e82 JB |
1198 | |
1199 | while ((skb = skb_dequeue(&local->skb_queue)) || | |
1200 | (skb = skb_dequeue(&local->skb_queue_unreliable))) { | |
1201 | switch (skb->pkt_type) { | |
1202 | case IEEE80211_RX_MSG: | |
1203 | /* status is in skb->cb */ | |
1204 | memcpy(&rx_status, skb->cb, sizeof(rx_status)); | |
51fb61e7 | 1205 | /* Clear skb->pkt_type in order to not confuse kernel |
f0706e82 JB |
1206 | * netstack. */ |
1207 | skb->pkt_type = 0; | |
1208 | __ieee80211_rx(local_to_hw(local), skb, &rx_status); | |
1209 | break; | |
1210 | case IEEE80211_TX_STATUS_MSG: | |
1211 | /* get pointer to saved status out of skb->cb */ | |
1212 | memcpy(&tx_status, skb->cb, sizeof(tx_status)); | |
1213 | skb->pkt_type = 0; | |
1214 | ieee80211_tx_status(local_to_hw(local), | |
1215 | skb, tx_status); | |
1216 | kfree(tx_status); | |
1217 | break; | |
eadc8d9e RR |
1218 | case IEEE80211_DELBA_MSG: |
1219 | ra_tid = (struct ieee80211_ra_tid *) &skb->cb; | |
1220 | ieee80211_stop_tx_ba_cb(local_to_hw(local), | |
1221 | ra_tid->ra, ra_tid->tid); | |
1222 | dev_kfree_skb(skb); | |
1223 | break; | |
1224 | case IEEE80211_ADDBA_MSG: | |
1225 | ra_tid = (struct ieee80211_ra_tid *) &skb->cb; | |
1226 | ieee80211_start_tx_ba_cb(local_to_hw(local), | |
1227 | ra_tid->ra, ra_tid->tid); | |
1228 | dev_kfree_skb(skb); | |
1229 | break ; | |
f0706e82 JB |
1230 | default: /* should never get here! */ |
1231 | printk(KERN_ERR "%s: Unknown message type (%d)\n", | |
dd1cd4c6 | 1232 | wiphy_name(local->hw.wiphy), skb->pkt_type); |
f0706e82 JB |
1233 | dev_kfree_skb(skb); |
1234 | break; | |
1235 | } | |
1236 | } | |
1237 | } | |
1238 | ||
f0706e82 JB |
1239 | /* Remove added headers (e.g., QoS control), encryption header/MIC, etc. to |
1240 | * make a prepared TX frame (one that has been given to hw) to look like brand | |
1241 | * new IEEE 802.11 frame that is ready to go through TX processing again. | |
1242 | * Also, tx_packet_data in cb is restored from tx_control. */ | |
1243 | static void ieee80211_remove_tx_extra(struct ieee80211_local *local, | |
1244 | struct ieee80211_key *key, | |
1245 | struct sk_buff *skb, | |
1246 | struct ieee80211_tx_control *control) | |
1247 | { | |
1248 | int hdrlen, iv_len, mic_len; | |
1249 | struct ieee80211_tx_packet_data *pkt_data; | |
1250 | ||
1251 | pkt_data = (struct ieee80211_tx_packet_data *)skb->cb; | |
32bfd35d | 1252 | pkt_data->ifindex = vif_to_sdata(control->vif)->dev->ifindex; |
e8bf9649 JS |
1253 | pkt_data->flags = 0; |
1254 | if (control->flags & IEEE80211_TXCTL_REQ_TX_STATUS) | |
1255 | pkt_data->flags |= IEEE80211_TXPD_REQ_TX_STATUS; | |
1256 | if (control->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT) | |
1257 | pkt_data->flags |= IEEE80211_TXPD_DO_NOT_ENCRYPT; | |
1258 | if (control->flags & IEEE80211_TXCTL_REQUEUE) | |
1259 | pkt_data->flags |= IEEE80211_TXPD_REQUEUE; | |
678f5f71 JB |
1260 | if (control->flags & IEEE80211_TXCTL_EAPOL_FRAME) |
1261 | pkt_data->flags |= IEEE80211_TXPD_EAPOL_FRAME; | |
f0706e82 JB |
1262 | pkt_data->queue = control->queue; |
1263 | ||
1264 | hdrlen = ieee80211_get_hdrlen_from_skb(skb); | |
1265 | ||
1266 | if (!key) | |
1267 | goto no_key; | |
1268 | ||
8f20fc24 | 1269 | switch (key->conf.alg) { |
f0706e82 JB |
1270 | case ALG_WEP: |
1271 | iv_len = WEP_IV_LEN; | |
1272 | mic_len = WEP_ICV_LEN; | |
1273 | break; | |
1274 | case ALG_TKIP: | |
1275 | iv_len = TKIP_IV_LEN; | |
1276 | mic_len = TKIP_ICV_LEN; | |
1277 | break; | |
1278 | case ALG_CCMP: | |
1279 | iv_len = CCMP_HDR_LEN; | |
1280 | mic_len = CCMP_MIC_LEN; | |
1281 | break; | |
1282 | default: | |
1283 | goto no_key; | |
1284 | } | |
1285 | ||
8f20fc24 | 1286 | if (skb->len >= mic_len && |
11a843b7 | 1287 | !(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)) |
f0706e82 JB |
1288 | skb_trim(skb, skb->len - mic_len); |
1289 | if (skb->len >= iv_len && skb->len > hdrlen) { | |
1290 | memmove(skb->data + iv_len, skb->data, hdrlen); | |
1291 | skb_pull(skb, iv_len); | |
1292 | } | |
1293 | ||
1294 | no_key: | |
1295 | { | |
1296 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; | |
1297 | u16 fc = le16_to_cpu(hdr->frame_control); | |
1298 | if ((fc & 0x8C) == 0x88) /* QoS Control Field */ { | |
1299 | fc &= ~IEEE80211_STYPE_QOS_DATA; | |
1300 | hdr->frame_control = cpu_to_le16(fc); | |
1301 | memmove(skb->data + 2, skb->data, hdrlen - 2); | |
1302 | skb_pull(skb, 2); | |
1303 | } | |
1304 | } | |
1305 | } | |
1306 | ||
d46e144b JB |
1307 | static void ieee80211_handle_filtered_frame(struct ieee80211_local *local, |
1308 | struct sta_info *sta, | |
1309 | struct sk_buff *skb, | |
1310 | struct ieee80211_tx_status *status) | |
1311 | { | |
1312 | sta->tx_filtered_count++; | |
1313 | ||
1314 | /* | |
1315 | * Clear the TX filter mask for this STA when sending the next | |
1316 | * packet. If the STA went to power save mode, this will happen | |
1317 | * happen when it wakes up for the next time. | |
1318 | */ | |
07346f81 | 1319 | set_sta_flags(sta, WLAN_STA_CLEAR_PS_FILT); |
d46e144b JB |
1320 | |
1321 | /* | |
1322 | * This code races in the following way: | |
1323 | * | |
1324 | * (1) STA sends frame indicating it will go to sleep and does so | |
1325 | * (2) hardware/firmware adds STA to filter list, passes frame up | |
1326 | * (3) hardware/firmware processes TX fifo and suppresses a frame | |
1327 | * (4) we get TX status before having processed the frame and | |
1328 | * knowing that the STA has gone to sleep. | |
1329 | * | |
1330 | * This is actually quite unlikely even when both those events are | |
1331 | * processed from interrupts coming in quickly after one another or | |
1332 | * even at the same time because we queue both TX status events and | |
1333 | * RX frames to be processed by a tasklet and process them in the | |
1334 | * same order that they were received or TX status last. Hence, there | |
1335 | * is no race as long as the frame RX is processed before the next TX | |
1336 | * status, which drivers can ensure, see below. | |
1337 | * | |
1338 | * Note that this can only happen if the hardware or firmware can | |
1339 | * actually add STAs to the filter list, if this is done by the | |
1340 | * driver in response to set_tim() (which will only reduce the race | |
1341 | * this whole filtering tries to solve, not completely solve it) | |
1342 | * this situation cannot happen. | |
1343 | * | |
1344 | * To completely solve this race drivers need to make sure that they | |
1345 | * (a) don't mix the irq-safe/not irq-safe TX status/RX processing | |
1346 | * functions and | |
1347 | * (b) always process RX events before TX status events if ordering | |
1348 | * can be unknown, for example with different interrupt status | |
1349 | * bits. | |
1350 | */ | |
07346f81 | 1351 | if (test_sta_flags(sta, WLAN_STA_PS) && |
d46e144b JB |
1352 | skb_queue_len(&sta->tx_filtered) < STA_MAX_TX_BUFFER) { |
1353 | ieee80211_remove_tx_extra(local, sta->key, skb, | |
1354 | &status->control); | |
1355 | skb_queue_tail(&sta->tx_filtered, skb); | |
1356 | return; | |
1357 | } | |
1358 | ||
07346f81 | 1359 | if (!test_sta_flags(sta, WLAN_STA_PS) && |
d46e144b JB |
1360 | !(status->control.flags & IEEE80211_TXCTL_REQUEUE)) { |
1361 | /* Software retry the packet once */ | |
1362 | status->control.flags |= IEEE80211_TXCTL_REQUEUE; | |
1363 | ieee80211_remove_tx_extra(local, sta->key, skb, | |
1364 | &status->control); | |
1365 | dev_queue_xmit(skb); | |
1366 | return; | |
1367 | } | |
1368 | ||
1369 | if (net_ratelimit()) | |
1370 | printk(KERN_DEBUG "%s: dropped TX filtered frame, " | |
1371 | "queue_len=%d PS=%d @%lu\n", | |
1372 | wiphy_name(local->hw.wiphy), | |
1373 | skb_queue_len(&sta->tx_filtered), | |
07346f81 | 1374 | !!test_sta_flags(sta, WLAN_STA_PS), jiffies); |
d46e144b JB |
1375 | dev_kfree_skb(skb); |
1376 | } | |
1377 | ||
f0706e82 JB |
1378 | void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb, |
1379 | struct ieee80211_tx_status *status) | |
1380 | { | |
1381 | struct sk_buff *skb2; | |
1382 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; | |
1383 | struct ieee80211_local *local = hw_to_local(hw); | |
1384 | u16 frag, type; | |
b306f453 JB |
1385 | struct ieee80211_tx_status_rtap_hdr *rthdr; |
1386 | struct ieee80211_sub_if_data *sdata; | |
3d30d949 | 1387 | struct net_device *prev_dev = NULL; |
f0706e82 JB |
1388 | |
1389 | if (!status) { | |
1390 | printk(KERN_ERR | |
1391 | "%s: ieee80211_tx_status called with NULL status\n", | |
dd1cd4c6 | 1392 | wiphy_name(local->hw.wiphy)); |
f0706e82 JB |
1393 | dev_kfree_skb(skb); |
1394 | return; | |
1395 | } | |
1396 | ||
d0709a65 JB |
1397 | rcu_read_lock(); |
1398 | ||
f0706e82 JB |
1399 | if (status->excessive_retries) { |
1400 | struct sta_info *sta; | |
1401 | sta = sta_info_get(local, hdr->addr1); | |
1402 | if (sta) { | |
07346f81 | 1403 | if (test_sta_flags(sta, WLAN_STA_PS)) { |
d46e144b JB |
1404 | /* |
1405 | * The STA is in power save mode, so assume | |
f0706e82 JB |
1406 | * that this TX packet failed because of that. |
1407 | */ | |
1408 | status->excessive_retries = 0; | |
1409 | status->flags |= IEEE80211_TX_STATUS_TX_FILTERED; | |
d46e144b JB |
1410 | ieee80211_handle_filtered_frame(local, sta, |
1411 | skb, status); | |
d0709a65 | 1412 | rcu_read_unlock(); |
d46e144b | 1413 | return; |
f0706e82 | 1414 | } |
f0706e82 JB |
1415 | } |
1416 | } | |
1417 | ||
1418 | if (status->flags & IEEE80211_TX_STATUS_TX_FILTERED) { | |
1419 | struct sta_info *sta; | |
1420 | sta = sta_info_get(local, hdr->addr1); | |
1421 | if (sta) { | |
d46e144b JB |
1422 | ieee80211_handle_filtered_frame(local, sta, skb, |
1423 | status); | |
d0709a65 | 1424 | rcu_read_unlock(); |
f0706e82 JB |
1425 | return; |
1426 | } | |
1abbe498 MN |
1427 | } else |
1428 | rate_control_tx_status(local->mdev, skb, status); | |
f0706e82 | 1429 | |
d0709a65 JB |
1430 | rcu_read_unlock(); |
1431 | ||
f0706e82 JB |
1432 | ieee80211_led_tx(local, 0); |
1433 | ||
1434 | /* SNMP counters | |
1435 | * Fragments are passed to low-level drivers as separate skbs, so these | |
1436 | * are actually fragments, not frames. Update frame counters only for | |
1437 | * the first fragment of the frame. */ | |
1438 | ||
1439 | frag = le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_FRAG; | |
1440 | type = le16_to_cpu(hdr->frame_control) & IEEE80211_FCTL_FTYPE; | |
1441 | ||
1442 | if (status->flags & IEEE80211_TX_STATUS_ACK) { | |
1443 | if (frag == 0) { | |
1444 | local->dot11TransmittedFrameCount++; | |
1445 | if (is_multicast_ether_addr(hdr->addr1)) | |
1446 | local->dot11MulticastTransmittedFrameCount++; | |
1447 | if (status->retry_count > 0) | |
1448 | local->dot11RetryCount++; | |
1449 | if (status->retry_count > 1) | |
1450 | local->dot11MultipleRetryCount++; | |
1451 | } | |
1452 | ||
1453 | /* This counter shall be incremented for an acknowledged MPDU | |
1454 | * with an individual address in the address 1 field or an MPDU | |
1455 | * with a multicast address in the address 1 field of type Data | |
1456 | * or Management. */ | |
1457 | if (!is_multicast_ether_addr(hdr->addr1) || | |
1458 | type == IEEE80211_FTYPE_DATA || | |
1459 | type == IEEE80211_FTYPE_MGMT) | |
1460 | local->dot11TransmittedFragmentCount++; | |
1461 | } else { | |
1462 | if (frag == 0) | |
1463 | local->dot11FailedCount++; | |
1464 | } | |
1465 | ||
b306f453 JB |
1466 | /* this was a transmitted frame, but now we want to reuse it */ |
1467 | skb_orphan(skb); | |
1468 | ||
3d30d949 MW |
1469 | /* |
1470 | * This is a bit racy but we can avoid a lot of work | |
1471 | * with this test... | |
1472 | */ | |
1473 | if (!local->monitors && !local->cooked_mntrs) { | |
f0706e82 JB |
1474 | dev_kfree_skb(skb); |
1475 | return; | |
1476 | } | |
1477 | ||
b306f453 | 1478 | /* send frame to monitor interfaces now */ |
f0706e82 | 1479 | |
b306f453 JB |
1480 | if (skb_headroom(skb) < sizeof(*rthdr)) { |
1481 | printk(KERN_ERR "ieee80211_tx_status: headroom too small\n"); | |
f0706e82 JB |
1482 | dev_kfree_skb(skb); |
1483 | return; | |
1484 | } | |
f0706e82 | 1485 | |
988c0f72 | 1486 | rthdr = (struct ieee80211_tx_status_rtap_hdr *) |
b306f453 JB |
1487 | skb_push(skb, sizeof(*rthdr)); |
1488 | ||
1489 | memset(rthdr, 0, sizeof(*rthdr)); | |
1490 | rthdr->hdr.it_len = cpu_to_le16(sizeof(*rthdr)); | |
1491 | rthdr->hdr.it_present = | |
1492 | cpu_to_le32((1 << IEEE80211_RADIOTAP_TX_FLAGS) | | |
1493 | (1 << IEEE80211_RADIOTAP_DATA_RETRIES)); | |
1494 | ||
1495 | if (!(status->flags & IEEE80211_TX_STATUS_ACK) && | |
1496 | !is_multicast_ether_addr(hdr->addr1)) | |
1497 | rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_FAIL); | |
1498 | ||
1499 | if ((status->control.flags & IEEE80211_TXCTL_USE_RTS_CTS) && | |
1500 | (status->control.flags & IEEE80211_TXCTL_USE_CTS_PROTECT)) | |
1501 | rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_CTS); | |
1502 | else if (status->control.flags & IEEE80211_TXCTL_USE_RTS_CTS) | |
1503 | rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_RTS); | |
1504 | ||
1505 | rthdr->data_retries = status->retry_count; | |
1506 | ||
3d30d949 MW |
1507 | /* XXX: is this sufficient for BPF? */ |
1508 | skb_set_mac_header(skb, 0); | |
1509 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
1510 | skb->pkt_type = PACKET_OTHERHOST; | |
1511 | skb->protocol = htons(ETH_P_802_2); | |
1512 | memset(skb->cb, 0, sizeof(skb->cb)); | |
1513 | ||
79010420 | 1514 | rcu_read_lock(); |
79010420 | 1515 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { |
51fb61e7 | 1516 | if (sdata->vif.type == IEEE80211_IF_TYPE_MNTR) { |
b306f453 JB |
1517 | if (!netif_running(sdata->dev)) |
1518 | continue; | |
3d30d949 MW |
1519 | |
1520 | if (prev_dev) { | |
79010420 | 1521 | skb2 = skb_clone(skb, GFP_ATOMIC); |
3d30d949 MW |
1522 | if (skb2) { |
1523 | skb2->dev = prev_dev; | |
1524 | netif_rx(skb2); | |
1525 | } | |
1526 | } | |
1527 | ||
1528 | prev_dev = sdata->dev; | |
b306f453 JB |
1529 | } |
1530 | } | |
3d30d949 MW |
1531 | if (prev_dev) { |
1532 | skb->dev = prev_dev; | |
1533 | netif_rx(skb); | |
1534 | skb = NULL; | |
1535 | } | |
79010420 | 1536 | rcu_read_unlock(); |
3d30d949 | 1537 | dev_kfree_skb(skb); |
f0706e82 JB |
1538 | } |
1539 | EXPORT_SYMBOL(ieee80211_tx_status); | |
1540 | ||
f0706e82 JB |
1541 | struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len, |
1542 | const struct ieee80211_ops *ops) | |
1543 | { | |
f0706e82 | 1544 | struct ieee80211_local *local; |
f0706e82 JB |
1545 | int priv_size; |
1546 | struct wiphy *wiphy; | |
1547 | ||
1548 | /* Ensure 32-byte alignment of our private data and hw private data. | |
1549 | * We use the wiphy priv data for both our ieee80211_local and for | |
1550 | * the driver's private data | |
1551 | * | |
1552 | * In memory it'll be like this: | |
1553 | * | |
1554 | * +-------------------------+ | |
1555 | * | struct wiphy | | |
1556 | * +-------------------------+ | |
1557 | * | struct ieee80211_local | | |
1558 | * +-------------------------+ | |
1559 | * | driver's private data | | |
1560 | * +-------------------------+ | |
1561 | * | |
1562 | */ | |
1563 | priv_size = ((sizeof(struct ieee80211_local) + | |
1564 | NETDEV_ALIGN_CONST) & ~NETDEV_ALIGN_CONST) + | |
1565 | priv_data_len; | |
1566 | ||
1567 | wiphy = wiphy_new(&mac80211_config_ops, priv_size); | |
1568 | ||
1569 | if (!wiphy) | |
1570 | return NULL; | |
1571 | ||
1572 | wiphy->privid = mac80211_wiphy_privid; | |
1573 | ||
1574 | local = wiphy_priv(wiphy); | |
1575 | local->hw.wiphy = wiphy; | |
1576 | ||
1577 | local->hw.priv = (char *)local + | |
1578 | ((sizeof(struct ieee80211_local) + | |
1579 | NETDEV_ALIGN_CONST) & ~NETDEV_ALIGN_CONST); | |
1580 | ||
4480f15c | 1581 | BUG_ON(!ops->tx); |
4150c572 JB |
1582 | BUG_ON(!ops->start); |
1583 | BUG_ON(!ops->stop); | |
4480f15c JB |
1584 | BUG_ON(!ops->config); |
1585 | BUG_ON(!ops->add_interface); | |
4150c572 JB |
1586 | BUG_ON(!ops->remove_interface); |
1587 | BUG_ON(!ops->configure_filter); | |
f0706e82 JB |
1588 | local->ops = ops; |
1589 | ||
f0706e82 JB |
1590 | local->hw.queues = 1; /* default */ |
1591 | ||
f0706e82 JB |
1592 | local->bridge_packets = 1; |
1593 | ||
1594 | local->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD; | |
1595 | local->fragmentation_threshold = IEEE80211_MAX_FRAG_THRESHOLD; | |
1596 | local->short_retry_limit = 7; | |
1597 | local->long_retry_limit = 4; | |
1598 | local->hw.conf.radio_enabled = 1; | |
f0706e82 | 1599 | |
79010420 | 1600 | INIT_LIST_HEAD(&local->interfaces); |
f0706e82 | 1601 | |
b16bd15c JB |
1602 | spin_lock_init(&local->key_lock); |
1603 | ||
f0706e82 | 1604 | INIT_DELAYED_WORK(&local->scan_work, ieee80211_sta_scan_work); |
f0706e82 JB |
1605 | |
1606 | sta_info_init(local); | |
1607 | ||
f0706e82 JB |
1608 | tasklet_init(&local->tx_pending_tasklet, ieee80211_tx_pending, |
1609 | (unsigned long)local); | |
1610 | tasklet_disable(&local->tx_pending_tasklet); | |
1611 | ||
1612 | tasklet_init(&local->tasklet, | |
1613 | ieee80211_tasklet_handler, | |
1614 | (unsigned long) local); | |
1615 | tasklet_disable(&local->tasklet); | |
1616 | ||
1617 | skb_queue_head_init(&local->skb_queue); | |
1618 | skb_queue_head_init(&local->skb_queue_unreliable); | |
1619 | ||
1620 | return local_to_hw(local); | |
1621 | } | |
1622 | EXPORT_SYMBOL(ieee80211_alloc_hw); | |
1623 | ||
1624 | int ieee80211_register_hw(struct ieee80211_hw *hw) | |
1625 | { | |
1626 | struct ieee80211_local *local = hw_to_local(hw); | |
1627 | const char *name; | |
1628 | int result; | |
8318d78a | 1629 | enum ieee80211_band band; |
96d51056 JB |
1630 | struct net_device *mdev; |
1631 | struct ieee80211_sub_if_data *sdata; | |
8318d78a JB |
1632 | |
1633 | /* | |
1634 | * generic code guarantees at least one band, | |
1635 | * set this very early because much code assumes | |
1636 | * that hw.conf.channel is assigned | |
1637 | */ | |
1638 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { | |
1639 | struct ieee80211_supported_band *sband; | |
1640 | ||
1641 | sband = local->hw.wiphy->bands[band]; | |
1642 | if (sband) { | |
1643 | /* init channel we're on */ | |
1644 | local->hw.conf.channel = | |
1645 | local->oper_channel = | |
1646 | local->scan_channel = &sband->channels[0]; | |
1647 | break; | |
1648 | } | |
1649 | } | |
f0706e82 JB |
1650 | |
1651 | result = wiphy_register(local->hw.wiphy); | |
1652 | if (result < 0) | |
1653 | return result; | |
1654 | ||
96d51056 JB |
1655 | /* for now, mdev needs sub_if_data :/ */ |
1656 | mdev = alloc_netdev(sizeof(struct ieee80211_sub_if_data), | |
1657 | "wmaster%d", ether_setup); | |
1658 | if (!mdev) | |
1659 | goto fail_mdev_alloc; | |
1660 | ||
1661 | sdata = IEEE80211_DEV_TO_SUB_IF(mdev); | |
1662 | mdev->ieee80211_ptr = &sdata->wdev; | |
1663 | sdata->wdev.wiphy = local->hw.wiphy; | |
1664 | ||
1665 | local->mdev = mdev; | |
1666 | ||
1667 | ieee80211_rx_bss_list_init(mdev); | |
1668 | ||
1669 | mdev->hard_start_xmit = ieee80211_master_start_xmit; | |
1670 | mdev->open = ieee80211_master_open; | |
1671 | mdev->stop = ieee80211_master_stop; | |
1672 | mdev->type = ARPHRD_IEEE80211; | |
1673 | mdev->header_ops = &ieee80211_header_ops; | |
1674 | mdev->set_multicast_list = ieee80211_master_set_multicast_list; | |
1675 | ||
1676 | sdata->vif.type = IEEE80211_IF_TYPE_AP; | |
1677 | sdata->dev = mdev; | |
1678 | sdata->local = local; | |
1679 | sdata->u.ap.force_unicast_rateidx = -1; | |
1680 | sdata->u.ap.max_ratectrl_rateidx = -1; | |
1681 | ieee80211_if_sdata_init(sdata); | |
1682 | ||
1683 | /* no RCU needed since we're still during init phase */ | |
1684 | list_add_tail(&sdata->list, &local->interfaces); | |
1685 | ||
f0706e82 JB |
1686 | name = wiphy_dev(local->hw.wiphy)->driver->name; |
1687 | local->hw.workqueue = create_singlethread_workqueue(name); | |
1688 | if (!local->hw.workqueue) { | |
1689 | result = -ENOMEM; | |
1690 | goto fail_workqueue; | |
1691 | } | |
1692 | ||
b306f453 JB |
1693 | /* |
1694 | * The hardware needs headroom for sending the frame, | |
1695 | * and we need some headroom for passing the frame to monitor | |
1696 | * interfaces, but never both at the same time. | |
1697 | */ | |
33ccad35 JB |
1698 | local->tx_headroom = max_t(unsigned int , local->hw.extra_tx_headroom, |
1699 | sizeof(struct ieee80211_tx_status_rtap_hdr)); | |
b306f453 | 1700 | |
e9f207f0 JB |
1701 | debugfs_hw_add(local); |
1702 | ||
f0706e82 JB |
1703 | local->hw.conf.beacon_int = 1000; |
1704 | ||
1705 | local->wstats_flags |= local->hw.max_rssi ? | |
1706 | IW_QUAL_LEVEL_UPDATED : IW_QUAL_LEVEL_INVALID; | |
1707 | local->wstats_flags |= local->hw.max_signal ? | |
1708 | IW_QUAL_QUAL_UPDATED : IW_QUAL_QUAL_INVALID; | |
1709 | local->wstats_flags |= local->hw.max_noise ? | |
1710 | IW_QUAL_NOISE_UPDATED : IW_QUAL_NOISE_INVALID; | |
1711 | if (local->hw.max_rssi < 0 || local->hw.max_noise < 0) | |
1712 | local->wstats_flags |= IW_QUAL_DBM; | |
1713 | ||
1714 | result = sta_info_start(local); | |
1715 | if (result < 0) | |
1716 | goto fail_sta_info; | |
1717 | ||
1718 | rtnl_lock(); | |
1719 | result = dev_alloc_name(local->mdev, local->mdev->name); | |
1720 | if (result < 0) | |
1721 | goto fail_dev; | |
1722 | ||
1723 | memcpy(local->mdev->dev_addr, local->hw.wiphy->perm_addr, ETH_ALEN); | |
1724 | SET_NETDEV_DEV(local->mdev, wiphy_dev(local->hw.wiphy)); | |
1725 | ||
1726 | result = register_netdevice(local->mdev); | |
1727 | if (result < 0) | |
1728 | goto fail_dev; | |
1729 | ||
e9f207f0 | 1730 | ieee80211_debugfs_add_netdev(IEEE80211_DEV_TO_SUB_IF(local->mdev)); |
5b2812e9 | 1731 | ieee80211_if_set_type(local->mdev, IEEE80211_IF_TYPE_AP); |
e9f207f0 | 1732 | |
830f9038 JB |
1733 | result = ieee80211_init_rate_ctrl_alg(local, |
1734 | hw->rate_control_algorithm); | |
f0706e82 JB |
1735 | if (result < 0) { |
1736 | printk(KERN_DEBUG "%s: Failed to initialize rate control " | |
dd1cd4c6 | 1737 | "algorithm\n", wiphy_name(local->hw.wiphy)); |
f0706e82 JB |
1738 | goto fail_rate; |
1739 | } | |
1740 | ||
1741 | result = ieee80211_wep_init(local); | |
1742 | ||
1743 | if (result < 0) { | |
1744 | printk(KERN_DEBUG "%s: Failed to initialize wep\n", | |
dd1cd4c6 | 1745 | wiphy_name(local->hw.wiphy)); |
f0706e82 JB |
1746 | goto fail_wep; |
1747 | } | |
1748 | ||
e100bb64 JB |
1749 | if (hw->queues > IEEE80211_MAX_QUEUES) |
1750 | hw->queues = IEEE80211_MAX_QUEUES; | |
1751 | if (hw->ampdu_queues > IEEE80211_MAX_AMPDU_QUEUES) | |
1752 | hw->ampdu_queues = IEEE80211_MAX_AMPDU_QUEUES; | |
1753 | ||
f0706e82 JB |
1754 | ieee80211_install_qdisc(local->mdev); |
1755 | ||
1756 | /* add one default STA interface */ | |
1757 | result = ieee80211_if_add(local->mdev, "wlan%d", NULL, | |
ee385855 | 1758 | IEEE80211_IF_TYPE_STA, NULL); |
f0706e82 JB |
1759 | if (result) |
1760 | printk(KERN_WARNING "%s: Failed to add default virtual iface\n", | |
dd1cd4c6 | 1761 | wiphy_name(local->hw.wiphy)); |
f0706e82 JB |
1762 | |
1763 | local->reg_state = IEEE80211_DEV_REGISTERED; | |
1764 | rtnl_unlock(); | |
1765 | ||
1766 | ieee80211_led_init(local); | |
1767 | ||
1768 | return 0; | |
1769 | ||
1770 | fail_wep: | |
1771 | rate_control_deinitialize(local); | |
1772 | fail_rate: | |
e9f207f0 | 1773 | ieee80211_debugfs_remove_netdev(IEEE80211_DEV_TO_SUB_IF(local->mdev)); |
f0706e82 JB |
1774 | unregister_netdevice(local->mdev); |
1775 | fail_dev: | |
1776 | rtnl_unlock(); | |
1777 | sta_info_stop(local); | |
1778 | fail_sta_info: | |
e9f207f0 | 1779 | debugfs_hw_del(local); |
f0706e82 JB |
1780 | destroy_workqueue(local->hw.workqueue); |
1781 | fail_workqueue: | |
96d51056 JB |
1782 | ieee80211_if_free(local->mdev); |
1783 | local->mdev = NULL; | |
1784 | fail_mdev_alloc: | |
f0706e82 JB |
1785 | wiphy_unregister(local->hw.wiphy); |
1786 | return result; | |
1787 | } | |
1788 | EXPORT_SYMBOL(ieee80211_register_hw); | |
1789 | ||
f0706e82 JB |
1790 | void ieee80211_unregister_hw(struct ieee80211_hw *hw) |
1791 | { | |
1792 | struct ieee80211_local *local = hw_to_local(hw); | |
1793 | struct ieee80211_sub_if_data *sdata, *tmp; | |
f0706e82 JB |
1794 | |
1795 | tasklet_kill(&local->tx_pending_tasklet); | |
1796 | tasklet_kill(&local->tasklet); | |
1797 | ||
1798 | rtnl_lock(); | |
1799 | ||
1800 | BUG_ON(local->reg_state != IEEE80211_DEV_REGISTERED); | |
1801 | ||
1802 | local->reg_state = IEEE80211_DEV_UNREGISTERED; | |
f0706e82 | 1803 | |
79010420 JB |
1804 | /* |
1805 | * At this point, interface list manipulations are fine | |
1806 | * because the driver cannot be handing us frames any | |
1807 | * more and the tasklet is killed. | |
1808 | */ | |
5b2812e9 JB |
1809 | |
1810 | /* | |
1811 | * First, we remove all non-master interfaces. Do this because they | |
1812 | * may have bss pointer dependency on the master, and when we free | |
1813 | * the master these would be freed as well, breaking our list | |
1814 | * iteration completely. | |
1815 | */ | |
1816 | list_for_each_entry_safe(sdata, tmp, &local->interfaces, list) { | |
1817 | if (sdata->dev == local->mdev) | |
1818 | continue; | |
1819 | list_del(&sdata->list); | |
f0706e82 | 1820 | __ieee80211_if_del(local, sdata); |
5b2812e9 JB |
1821 | } |
1822 | ||
1823 | /* then, finally, remove the master interface */ | |
1824 | __ieee80211_if_del(local, IEEE80211_DEV_TO_SUB_IF(local->mdev)); | |
f0706e82 JB |
1825 | |
1826 | rtnl_unlock(); | |
1827 | ||
f0706e82 JB |
1828 | ieee80211_rx_bss_list_deinit(local->mdev); |
1829 | ieee80211_clear_tx_pending(local); | |
1830 | sta_info_stop(local); | |
1831 | rate_control_deinitialize(local); | |
e9f207f0 | 1832 | debugfs_hw_del(local); |
f0706e82 | 1833 | |
f0706e82 JB |
1834 | if (skb_queue_len(&local->skb_queue) |
1835 | || skb_queue_len(&local->skb_queue_unreliable)) | |
1836 | printk(KERN_WARNING "%s: skb_queue not empty\n", | |
dd1cd4c6 | 1837 | wiphy_name(local->hw.wiphy)); |
f0706e82 JB |
1838 | skb_queue_purge(&local->skb_queue); |
1839 | skb_queue_purge(&local->skb_queue_unreliable); | |
1840 | ||
1841 | destroy_workqueue(local->hw.workqueue); | |
1842 | wiphy_unregister(local->hw.wiphy); | |
1843 | ieee80211_wep_free(local); | |
1844 | ieee80211_led_exit(local); | |
96d51056 JB |
1845 | ieee80211_if_free(local->mdev); |
1846 | local->mdev = NULL; | |
f0706e82 JB |
1847 | } |
1848 | EXPORT_SYMBOL(ieee80211_unregister_hw); | |
1849 | ||
1850 | void ieee80211_free_hw(struct ieee80211_hw *hw) | |
1851 | { | |
1852 | struct ieee80211_local *local = hw_to_local(hw); | |
1853 | ||
f0706e82 JB |
1854 | wiphy_free(local->hw.wiphy); |
1855 | } | |
1856 | EXPORT_SYMBOL(ieee80211_free_hw); | |
1857 | ||
f0706e82 JB |
1858 | static int __init ieee80211_init(void) |
1859 | { | |
1860 | struct sk_buff *skb; | |
1861 | int ret; | |
1862 | ||
1863 | BUILD_BUG_ON(sizeof(struct ieee80211_tx_packet_data) > sizeof(skb->cb)); | |
1864 | ||
4b475898 | 1865 | ret = rc80211_pid_init(); |
ad018375 | 1866 | if (ret) |
d9357136 | 1867 | goto out; |
ac71c691 | 1868 | |
f0706e82 JB |
1869 | ret = ieee80211_wme_register(); |
1870 | if (ret) { | |
1871 | printk(KERN_DEBUG "ieee80211_init: failed to " | |
1872 | "initialize WME (err=%d)\n", ret); | |
3eadf5f4 | 1873 | goto out_cleanup_pid; |
f0706e82 JB |
1874 | } |
1875 | ||
e9f207f0 JB |
1876 | ieee80211_debugfs_netdev_init(); |
1877 | ||
f0706e82 | 1878 | return 0; |
ad018375 | 1879 | |
3eadf5f4 | 1880 | out_cleanup_pid: |
4b475898 | 1881 | rc80211_pid_exit(); |
3eadf5f4 | 1882 | out: |
ad018375 | 1883 | return ret; |
f0706e82 JB |
1884 | } |
1885 | ||
f0706e82 JB |
1886 | static void __exit ieee80211_exit(void) |
1887 | { | |
4b475898 | 1888 | rc80211_pid_exit(); |
ac71c691 | 1889 | |
3b96766f JB |
1890 | /* |
1891 | * For key todo, it'll be empty by now but the work | |
1892 | * might still be scheduled. | |
1893 | */ | |
1894 | flush_scheduled_work(); | |
1895 | ||
f7a92144 LCC |
1896 | if (mesh_allocated) |
1897 | ieee80211s_stop(); | |
902acc78 | 1898 | |
f0706e82 | 1899 | ieee80211_wme_unregister(); |
e9f207f0 | 1900 | ieee80211_debugfs_netdev_exit(); |
f0706e82 JB |
1901 | } |
1902 | ||
1903 | ||
ca9938fe | 1904 | subsys_initcall(ieee80211_init); |
f0706e82 JB |
1905 | module_exit(ieee80211_exit); |
1906 | ||
1907 | MODULE_DESCRIPTION("IEEE 802.11 subsystem"); | |
1908 | MODULE_LICENSE("GPL"); |