Commit | Line | Data |
---|---|---|
f0706e82 JB |
1 | /* |
2 | * Copyright 2002-2005, Instant802 Networks, Inc. | |
3 | * Copyright 2005-2006, Devicescape Software, Inc. | |
4 | * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License version 2 as | |
8 | * published by the Free Software Foundation. | |
9 | */ | |
10 | ||
11 | #include <net/mac80211.h> | |
12 | #include <net/ieee80211_radiotap.h> | |
13 | #include <linux/module.h> | |
14 | #include <linux/init.h> | |
15 | #include <linux/netdevice.h> | |
16 | #include <linux/types.h> | |
17 | #include <linux/slab.h> | |
18 | #include <linux/skbuff.h> | |
19 | #include <linux/etherdevice.h> | |
20 | #include <linux/if_arp.h> | |
21 | #include <linux/wireless.h> | |
22 | #include <linux/rtnetlink.h> | |
f0706e82 | 23 | #include <linux/bitmap.h> |
881d966b | 24 | #include <net/net_namespace.h> |
f0706e82 JB |
25 | #include <net/cfg80211.h> |
26 | ||
f0706e82 | 27 | #include "ieee80211_i.h" |
2c8dccc7 | 28 | #include "rate.h" |
f7a92144 | 29 | #include "mesh.h" |
f0706e82 | 30 | #include "wep.h" |
f0706e82 JB |
31 | #include "wme.h" |
32 | #include "aes_ccm.h" | |
2c8dccc7 | 33 | #include "led.h" |
e0eb6859 | 34 | #include "cfg.h" |
e9f207f0 JB |
35 | #include "debugfs.h" |
36 | #include "debugfs_netdev.h" | |
f0706e82 | 37 | |
b306f453 JB |
38 | /* |
39 | * For seeing transmitted packets on monitor interfaces | |
40 | * we have a radiotap header too. | |
41 | */ | |
42 | struct ieee80211_tx_status_rtap_hdr { | |
43 | struct ieee80211_radiotap_header hdr; | |
44 | __le16 tx_flags; | |
45 | u8 data_retries; | |
46 | } __attribute__ ((packed)); | |
47 | ||
b2c258fb | 48 | /* common interface routines */ |
b306f453 | 49 | |
b95cce35 | 50 | static int header_parse_80211(const struct sk_buff *skb, unsigned char *haddr) |
b2c258fb JB |
51 | { |
52 | memcpy(haddr, skb_mac_header(skb) + 10, ETH_ALEN); /* addr2 */ | |
53 | return ETH_ALEN; | |
54 | } | |
f0706e82 | 55 | |
4150c572 JB |
56 | /* must be called under mdev tx lock */ |
57 | static void ieee80211_configure_filter(struct ieee80211_local *local) | |
58 | { | |
59 | unsigned int changed_flags; | |
60 | unsigned int new_flags = 0; | |
61 | ||
53918994 | 62 | if (atomic_read(&local->iff_promiscs)) |
4150c572 JB |
63 | new_flags |= FIF_PROMISC_IN_BSS; |
64 | ||
53918994 | 65 | if (atomic_read(&local->iff_allmultis)) |
4150c572 JB |
66 | new_flags |= FIF_ALLMULTI; |
67 | ||
68 | if (local->monitors) | |
8cc9a739 MW |
69 | new_flags |= FIF_BCN_PRBRESP_PROMISC; |
70 | ||
71 | if (local->fif_fcsfail) | |
72 | new_flags |= FIF_FCSFAIL; | |
73 | ||
74 | if (local->fif_plcpfail) | |
75 | new_flags |= FIF_PLCPFAIL; | |
76 | ||
77 | if (local->fif_control) | |
78 | new_flags |= FIF_CONTROL; | |
79 | ||
80 | if (local->fif_other_bss) | |
81 | new_flags |= FIF_OTHER_BSS; | |
4150c572 JB |
82 | |
83 | changed_flags = local->filter_flags ^ new_flags; | |
84 | ||
85 | /* be a bit nasty */ | |
86 | new_flags |= (1<<31); | |
87 | ||
88 | local->ops->configure_filter(local_to_hw(local), | |
89 | changed_flags, &new_flags, | |
90 | local->mdev->mc_count, | |
91 | local->mdev->mc_list); | |
92 | ||
93 | WARN_ON(new_flags & (1<<31)); | |
94 | ||
95 | local->filter_flags = new_flags & ~(1<<31); | |
96 | } | |
97 | ||
b2c258fb | 98 | /* master interface */ |
f0706e82 | 99 | |
b2c258fb JB |
100 | static int ieee80211_master_open(struct net_device *dev) |
101 | { | |
102 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
103 | struct ieee80211_sub_if_data *sdata; | |
104 | int res = -EOPNOTSUPP; | |
f0706e82 | 105 | |
79010420 JB |
106 | /* we hold the RTNL here so can safely walk the list */ |
107 | list_for_each_entry(sdata, &local->interfaces, list) { | |
3e122be0 | 108 | if (netif_running(sdata->dev)) { |
b2c258fb JB |
109 | res = 0; |
110 | break; | |
111 | } | |
112 | } | |
36d6825b JB |
113 | |
114 | if (res) | |
115 | return res; | |
116 | ||
117 | netif_start_queue(local->mdev); | |
118 | ||
119 | return 0; | |
b2c258fb | 120 | } |
f0706e82 | 121 | |
b2c258fb | 122 | static int ieee80211_master_stop(struct net_device *dev) |
f0706e82 | 123 | { |
b2c258fb JB |
124 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); |
125 | struct ieee80211_sub_if_data *sdata; | |
f0706e82 | 126 | |
79010420 JB |
127 | /* we hold the RTNL here so can safely walk the list */ |
128 | list_for_each_entry(sdata, &local->interfaces, list) | |
3e122be0 | 129 | if (netif_running(sdata->dev)) |
b2c258fb | 130 | dev_close(sdata->dev); |
f0706e82 | 131 | |
b2c258fb JB |
132 | return 0; |
133 | } | |
f0706e82 | 134 | |
4150c572 JB |
135 | static void ieee80211_master_set_multicast_list(struct net_device *dev) |
136 | { | |
137 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
138 | ||
139 | ieee80211_configure_filter(local); | |
140 | } | |
141 | ||
b2c258fb | 142 | /* regular interfaces */ |
f0706e82 | 143 | |
b2c258fb | 144 | static int ieee80211_change_mtu(struct net_device *dev, int new_mtu) |
f0706e82 | 145 | { |
f7a92144 LCC |
146 | int meshhdrlen; |
147 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
148 | ||
149 | meshhdrlen = (sdata->vif.type == IEEE80211_IF_TYPE_MESH_POINT) ? 5 : 0; | |
150 | ||
b2c258fb JB |
151 | /* FIX: what would be proper limits for MTU? |
152 | * This interface uses 802.3 frames. */ | |
f7a92144 | 153 | if (new_mtu < 256 || |
f4ea83dd | 154 | new_mtu > IEEE80211_MAX_DATA_LEN - 24 - 6 - meshhdrlen) { |
b2c258fb JB |
155 | return -EINVAL; |
156 | } | |
f0706e82 | 157 | |
b2c258fb JB |
158 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
159 | printk(KERN_DEBUG "%s: setting MTU %d\n", dev->name, new_mtu); | |
160 | #endif /* CONFIG_MAC80211_VERBOSE_DEBUG */ | |
161 | dev->mtu = new_mtu; | |
f0706e82 JB |
162 | return 0; |
163 | } | |
164 | ||
b2c258fb JB |
165 | static inline int identical_mac_addr_allowed(int type1, int type2) |
166 | { | |
167 | return (type1 == IEEE80211_IF_TYPE_MNTR || | |
168 | type2 == IEEE80211_IF_TYPE_MNTR || | |
169 | (type1 == IEEE80211_IF_TYPE_AP && | |
170 | type2 == IEEE80211_IF_TYPE_WDS) || | |
171 | (type1 == IEEE80211_IF_TYPE_WDS && | |
172 | (type2 == IEEE80211_IF_TYPE_WDS || | |
173 | type2 == IEEE80211_IF_TYPE_AP)) || | |
174 | (type1 == IEEE80211_IF_TYPE_AP && | |
175 | type2 == IEEE80211_IF_TYPE_VLAN) || | |
176 | (type1 == IEEE80211_IF_TYPE_VLAN && | |
177 | (type2 == IEEE80211_IF_TYPE_AP || | |
178 | type2 == IEEE80211_IF_TYPE_VLAN))); | |
179 | } | |
f0706e82 | 180 | |
b2c258fb | 181 | static int ieee80211_open(struct net_device *dev) |
e2ebc74d | 182 | { |
b2c258fb JB |
183 | struct ieee80211_sub_if_data *sdata, *nsdata; |
184 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
fc32f924 | 185 | struct sta_info *sta; |
b2c258fb | 186 | struct ieee80211_if_init_conf conf; |
fc32f924 | 187 | u32 changed = 0; |
b2c258fb | 188 | int res; |
ceffefd1 | 189 | bool need_hw_reconfig = 0; |
f0706e82 | 190 | |
b2c258fb | 191 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
0ec3ca44 | 192 | |
79010420 JB |
193 | /* we hold the RTNL here so can safely walk the list */ |
194 | list_for_each_entry(nsdata, &local->interfaces, list) { | |
b2c258fb | 195 | struct net_device *ndev = nsdata->dev; |
e2ebc74d | 196 | |
3e122be0 | 197 | if (ndev != dev && netif_running(ndev)) { |
665e8aaf JB |
198 | /* |
199 | * Allow only a single IBSS interface to be up at any | |
200 | * time. This is restricted because beacon distribution | |
201 | * cannot work properly if both are in the same IBSS. | |
202 | * | |
203 | * To remove this restriction we'd have to disallow them | |
204 | * from setting the same SSID on different IBSS interfaces | |
205 | * belonging to the same hardware. Then, however, we're | |
206 | * faced with having to adopt two different TSF timers... | |
207 | */ | |
208 | if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS && | |
209 | nsdata->vif.type == IEEE80211_IF_TYPE_IBSS) | |
210 | return -EBUSY; | |
211 | ||
665e8aaf JB |
212 | /* |
213 | * The remaining checks are only performed for interfaces | |
214 | * with the same MAC address. | |
215 | */ | |
216 | if (compare_ether_addr(dev->dev_addr, ndev->dev_addr)) | |
217 | continue; | |
218 | ||
0ec3ca44 JB |
219 | /* |
220 | * check whether it may have the same address | |
221 | */ | |
51fb61e7 JB |
222 | if (!identical_mac_addr_allowed(sdata->vif.type, |
223 | nsdata->vif.type)) | |
0ec3ca44 | 224 | return -ENOTUNIQ; |
0ec3ca44 JB |
225 | |
226 | /* | |
227 | * can only add VLANs to enabled APs | |
228 | */ | |
51fb61e7 | 229 | if (sdata->vif.type == IEEE80211_IF_TYPE_VLAN && |
665e8aaf | 230 | nsdata->vif.type == IEEE80211_IF_TYPE_AP) |
3e122be0 | 231 | sdata->bss = &nsdata->u.ap; |
b2c258fb JB |
232 | } |
233 | } | |
f0706e82 | 234 | |
51fb61e7 | 235 | switch (sdata->vif.type) { |
0ec3ca44 | 236 | case IEEE80211_IF_TYPE_WDS: |
e94e1068 | 237 | if (!is_valid_ether_addr(sdata->u.wds.remote_addr)) |
0ec3ca44 JB |
238 | return -ENOLINK; |
239 | break; | |
240 | case IEEE80211_IF_TYPE_VLAN: | |
3e122be0 | 241 | if (!sdata->bss) |
0ec3ca44 | 242 | return -ENOLINK; |
3e122be0 | 243 | list_add(&sdata->u.vlan.list, &sdata->bss->vlans); |
0ec3ca44 | 244 | break; |
fb1c1cd6 | 245 | case IEEE80211_IF_TYPE_AP: |
3e122be0 JB |
246 | sdata->bss = &sdata->u.ap; |
247 | break; | |
fb1c1cd6 JB |
248 | case IEEE80211_IF_TYPE_STA: |
249 | case IEEE80211_IF_TYPE_MNTR: | |
250 | case IEEE80211_IF_TYPE_IBSS: | |
6032f934 | 251 | case IEEE80211_IF_TYPE_MESH_POINT: |
fb1c1cd6 JB |
252 | /* no special treatment */ |
253 | break; | |
a2897552 JB |
254 | case IEEE80211_IF_TYPE_INVALID: |
255 | /* cannot happen */ | |
256 | WARN_ON(1); | |
257 | break; | |
0ec3ca44 | 258 | } |
f0706e82 | 259 | |
b2c258fb JB |
260 | if (local->open_count == 0) { |
261 | res = 0; | |
4150c572 JB |
262 | if (local->ops->start) |
263 | res = local->ops->start(local_to_hw(local)); | |
264 | if (res) | |
3e122be0 | 265 | goto err_del_bss; |
ceffefd1 | 266 | need_hw_reconfig = 1; |
cdcb006f | 267 | ieee80211_led_radio(local, local->hw.conf.radio_enabled); |
b2c258fb | 268 | } |
f0706e82 | 269 | |
51fb61e7 | 270 | switch (sdata->vif.type) { |
0ec3ca44 | 271 | case IEEE80211_IF_TYPE_VLAN: |
0ec3ca44 JB |
272 | /* no need to tell driver */ |
273 | break; | |
4150c572 | 274 | case IEEE80211_IF_TYPE_MNTR: |
3d30d949 MW |
275 | if (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES) { |
276 | local->cooked_mntrs++; | |
277 | break; | |
278 | } | |
279 | ||
4150c572 | 280 | /* must be before the call to ieee80211_configure_filter */ |
b2c258fb | 281 | local->monitors++; |
8cc9a739 | 282 | if (local->monitors == 1) |
4150c572 | 283 | local->hw.conf.flags |= IEEE80211_CONF_RADIOTAP; |
8cc9a739 MW |
284 | |
285 | if (sdata->u.mntr_flags & MONITOR_FLAG_FCSFAIL) | |
286 | local->fif_fcsfail++; | |
287 | if (sdata->u.mntr_flags & MONITOR_FLAG_PLCPFAIL) | |
288 | local->fif_plcpfail++; | |
289 | if (sdata->u.mntr_flags & MONITOR_FLAG_CONTROL) | |
290 | local->fif_control++; | |
291 | if (sdata->u.mntr_flags & MONITOR_FLAG_OTHER_BSS) | |
292 | local->fif_other_bss++; | |
293 | ||
294 | netif_tx_lock_bh(local->mdev); | |
295 | ieee80211_configure_filter(local); | |
296 | netif_tx_unlock_bh(local->mdev); | |
4150c572 JB |
297 | break; |
298 | case IEEE80211_IF_TYPE_STA: | |
299 | case IEEE80211_IF_TYPE_IBSS: | |
300 | sdata->u.sta.flags &= ~IEEE80211_STA_PREV_BSSID_SET; | |
301 | /* fall through */ | |
302 | default: | |
32bfd35d | 303 | conf.vif = &sdata->vif; |
51fb61e7 | 304 | conf.type = sdata->vif.type; |
4150c572 JB |
305 | conf.mac_addr = dev->dev_addr; |
306 | res = local->ops->add_interface(local_to_hw(local), &conf); | |
4150c572 | 307 | if (res) |
636c5d48 | 308 | goto err_stop; |
4150c572 | 309 | |
b2c258fb | 310 | ieee80211_if_config(dev); |
fc32f924 TW |
311 | changed |= ieee80211_reset_erp_info(dev); |
312 | ieee80211_bss_info_change_notify(sdata, changed); | |
11a843b7 | 313 | ieee80211_enable_keys(sdata); |
4150c572 | 314 | |
51fb61e7 | 315 | if (sdata->vif.type == IEEE80211_IF_TYPE_STA && |
ddd3d2be | 316 | !(sdata->flags & IEEE80211_SDATA_USERSPACE_MLME)) |
4150c572 JB |
317 | netif_carrier_off(dev); |
318 | else | |
319 | netif_carrier_on(dev); | |
d9430a32 | 320 | } |
f0706e82 | 321 | |
636c5d48 JB |
322 | if (sdata->vif.type == IEEE80211_IF_TYPE_WDS) { |
323 | /* Create STA entry for the WDS peer */ | |
324 | sta = sta_info_alloc(sdata, sdata->u.wds.remote_addr, | |
325 | GFP_KERNEL); | |
326 | if (!sta) { | |
327 | res = -ENOMEM; | |
328 | goto err_del_interface; | |
329 | } | |
330 | ||
07346f81 | 331 | /* no locking required since STA is not live yet */ |
636c5d48 JB |
332 | sta->flags |= WLAN_STA_AUTHORIZED; |
333 | ||
334 | res = sta_info_insert(sta); | |
335 | if (res) { | |
336 | /* STA has been freed */ | |
337 | goto err_del_interface; | |
338 | } | |
339 | } | |
340 | ||
4150c572 JB |
341 | if (local->open_count == 0) { |
342 | res = dev_open(local->mdev); | |
343 | WARN_ON(res); | |
636c5d48 JB |
344 | if (res) |
345 | goto err_del_interface; | |
4150c572 JB |
346 | tasklet_enable(&local->tx_pending_tasklet); |
347 | tasklet_enable(&local->tasklet); | |
348 | } | |
349 | ||
c1428b3f JB |
350 | /* |
351 | * set_multicast_list will be invoked by the networking core | |
352 | * which will check whether any increments here were done in | |
353 | * error and sync them down to the hardware as filter flags. | |
354 | */ | |
355 | if (sdata->flags & IEEE80211_SDATA_ALLMULTI) | |
356 | atomic_inc(&local->iff_allmultis); | |
357 | ||
358 | if (sdata->flags & IEEE80211_SDATA_PROMISC) | |
359 | atomic_inc(&local->iff_promiscs); | |
360 | ||
4150c572 | 361 | local->open_count++; |
ceffefd1 MB |
362 | if (need_hw_reconfig) |
363 | ieee80211_hw_config(local); | |
f0706e82 | 364 | |
64f851e4 JN |
365 | /* |
366 | * ieee80211_sta_work is disabled while network interface | |
367 | * is down. Therefore, some configuration changes may not | |
368 | * yet be effective. Trigger execution of ieee80211_sta_work | |
369 | * to fix this. | |
370 | */ | |
988c0f72 JB |
371 | if (sdata->vif.type == IEEE80211_IF_TYPE_STA || |
372 | sdata->vif.type == IEEE80211_IF_TYPE_IBSS) { | |
64f851e4 JN |
373 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; |
374 | queue_work(local->hw.workqueue, &ifsta->work); | |
375 | } | |
376 | ||
b2c258fb | 377 | netif_start_queue(dev); |
4150c572 | 378 | |
b2c258fb | 379 | return 0; |
636c5d48 JB |
380 | err_del_interface: |
381 | local->ops->remove_interface(local_to_hw(local), &conf); | |
382 | err_stop: | |
383 | if (!local->open_count && local->ops->stop) | |
384 | local->ops->stop(local_to_hw(local)); | |
3e122be0 JB |
385 | err_del_bss: |
386 | sdata->bss = NULL; | |
387 | if (sdata->vif.type == IEEE80211_IF_TYPE_VLAN) | |
388 | list_del(&sdata->u.vlan.list); | |
636c5d48 | 389 | return res; |
f0706e82 | 390 | } |
f0706e82 | 391 | |
4150c572 | 392 | static int ieee80211_stop(struct net_device *dev) |
f0706e82 | 393 | { |
44213b5e JB |
394 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
395 | struct ieee80211_local *local = sdata->local; | |
4150c572 | 396 | struct ieee80211_if_init_conf conf; |
07db2183 | 397 | struct sta_info *sta; |
4150c572 | 398 | |
44213b5e JB |
399 | /* |
400 | * Stop TX on this interface first. | |
401 | */ | |
402 | netif_stop_queue(dev); | |
4150c572 | 403 | |
44213b5e JB |
404 | /* |
405 | * Now delete all active aggregation sessions. | |
406 | */ | |
d0709a65 JB |
407 | rcu_read_lock(); |
408 | ||
409 | list_for_each_entry_rcu(sta, &local->sta_list, list) { | |
410 | if (sta->sdata == sdata) | |
85249e5f | 411 | ieee80211_sta_tear_down_BA_sessions(dev, sta->addr); |
07db2183 RR |
412 | } |
413 | ||
d0709a65 JB |
414 | rcu_read_unlock(); |
415 | ||
44213b5e JB |
416 | /* |
417 | * Remove all stations associated with this interface. | |
418 | * | |
419 | * This must be done before calling ops->remove_interface() | |
420 | * because otherwise we can later invoke ops->sta_notify() | |
421 | * whenever the STAs are removed, and that invalidates driver | |
422 | * assumptions about always getting a vif pointer that is valid | |
423 | * (because if we remove a STA after ops->remove_interface() | |
424 | * the driver will have removed the vif info already!) | |
425 | * | |
426 | * We could relax this and only unlink the stations from the | |
427 | * hash table and list but keep them on a per-sdata list that | |
428 | * will be inserted back again when the interface is brought | |
429 | * up again, but I don't currently see a use case for that, | |
430 | * except with WDS which gets a STA entry created when it is | |
431 | * brought up. | |
432 | */ | |
433 | sta_info_flush(local, sdata); | |
4150c572 | 434 | |
c1428b3f JB |
435 | /* |
436 | * Don't count this interface for promisc/allmulti while it | |
437 | * is down. dev_mc_unsync() will invoke set_multicast_list | |
438 | * on the master interface which will sync these down to the | |
439 | * hardware as filter flags. | |
440 | */ | |
441 | if (sdata->flags & IEEE80211_SDATA_ALLMULTI) | |
442 | atomic_dec(&local->iff_allmultis); | |
443 | ||
444 | if (sdata->flags & IEEE80211_SDATA_PROMISC) | |
445 | atomic_dec(&local->iff_promiscs); | |
446 | ||
4150c572 JB |
447 | dev_mc_unsync(local->mdev, dev); |
448 | ||
5dfdaf58 | 449 | /* APs need special treatment */ |
51fb61e7 | 450 | if (sdata->vif.type == IEEE80211_IF_TYPE_AP) { |
0ec3ca44 | 451 | struct ieee80211_sub_if_data *vlan, *tmp; |
5dfdaf58 | 452 | struct beacon_data *old_beacon = sdata->u.ap.beacon; |
0ec3ca44 | 453 | |
5dfdaf58 JB |
454 | /* remove beacon */ |
455 | rcu_assign_pointer(sdata->u.ap.beacon, NULL); | |
456 | synchronize_rcu(); | |
457 | kfree(old_beacon); | |
458 | ||
459 | /* down all dependent devices, that is VLANs */ | |
0ec3ca44 JB |
460 | list_for_each_entry_safe(vlan, tmp, &sdata->u.ap.vlans, |
461 | u.vlan.list) | |
462 | dev_close(vlan->dev); | |
463 | WARN_ON(!list_empty(&sdata->u.ap.vlans)); | |
464 | } | |
465 | ||
4150c572 | 466 | local->open_count--; |
f0706e82 | 467 | |
51fb61e7 | 468 | switch (sdata->vif.type) { |
0ec3ca44 JB |
469 | case IEEE80211_IF_TYPE_VLAN: |
470 | list_del(&sdata->u.vlan.list); | |
0ec3ca44 JB |
471 | /* no need to tell driver */ |
472 | break; | |
4150c572 | 473 | case IEEE80211_IF_TYPE_MNTR: |
3d30d949 MW |
474 | if (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES) { |
475 | local->cooked_mntrs--; | |
476 | break; | |
477 | } | |
478 | ||
4150c572 | 479 | local->monitors--; |
8cc9a739 | 480 | if (local->monitors == 0) |
8b393f1d | 481 | local->hw.conf.flags &= ~IEEE80211_CONF_RADIOTAP; |
8cc9a739 MW |
482 | |
483 | if (sdata->u.mntr_flags & MONITOR_FLAG_FCSFAIL) | |
484 | local->fif_fcsfail--; | |
485 | if (sdata->u.mntr_flags & MONITOR_FLAG_PLCPFAIL) | |
486 | local->fif_plcpfail--; | |
487 | if (sdata->u.mntr_flags & MONITOR_FLAG_CONTROL) | |
488 | local->fif_control--; | |
489 | if (sdata->u.mntr_flags & MONITOR_FLAG_OTHER_BSS) | |
490 | local->fif_other_bss--; | |
491 | ||
492 | netif_tx_lock_bh(local->mdev); | |
493 | ieee80211_configure_filter(local); | |
494 | netif_tx_unlock_bh(local->mdev); | |
4150c572 | 495 | break; |
f7a92144 | 496 | case IEEE80211_IF_TYPE_MESH_POINT: |
b2c258fb JB |
497 | case IEEE80211_IF_TYPE_STA: |
498 | case IEEE80211_IF_TYPE_IBSS: | |
499 | sdata->u.sta.state = IEEE80211_DISABLED; | |
ad81b2f9 | 500 | memset(sdata->u.sta.bssid, 0, ETH_ALEN); |
b2c258fb | 501 | del_timer_sync(&sdata->u.sta.timer); |
2a8a9a88 | 502 | /* |
79010420 JB |
503 | * When we get here, the interface is marked down. |
504 | * Call synchronize_rcu() to wait for the RX path | |
505 | * should it be using the interface and enqueuing | |
506 | * frames at this very time on another CPU. | |
2a8a9a88 | 507 | */ |
79010420 | 508 | synchronize_rcu(); |
b2c258fb | 509 | skb_queue_purge(&sdata->u.sta.skb_queue); |
2a8a9a88 | 510 | |
ece8eddd ZY |
511 | if (local->scan_dev == sdata->dev) { |
512 | if (!local->ops->hw_scan) { | |
513 | local->sta_sw_scanning = 0; | |
514 | cancel_delayed_work(&local->scan_work); | |
515 | } else | |
516 | local->sta_hw_scanning = 0; | |
b2c258fb | 517 | } |
ece8eddd | 518 | |
a10605e5 ZY |
519 | sdata->u.sta.flags &= ~IEEE80211_STA_PRIVACY_INVOKED; |
520 | kfree(sdata->u.sta.extra_ie); | |
521 | sdata->u.sta.extra_ie = NULL; | |
522 | sdata->u.sta.extra_ie_len = 0; | |
4150c572 JB |
523 | /* fall through */ |
524 | default: | |
32bfd35d | 525 | conf.vif = &sdata->vif; |
51fb61e7 | 526 | conf.type = sdata->vif.type; |
4150c572 | 527 | conf.mac_addr = dev->dev_addr; |
11a843b7 JB |
528 | /* disable all keys for as long as this netdev is down */ |
529 | ieee80211_disable_keys(sdata); | |
4150c572 | 530 | local->ops->remove_interface(local_to_hw(local), &conf); |
f0706e82 JB |
531 | } |
532 | ||
3e122be0 JB |
533 | sdata->bss = NULL; |
534 | ||
b2c258fb JB |
535 | if (local->open_count == 0) { |
536 | if (netif_running(local->mdev)) | |
537 | dev_close(local->mdev); | |
4150c572 | 538 | |
b2c258fb JB |
539 | if (local->ops->stop) |
540 | local->ops->stop(local_to_hw(local)); | |
4150c572 | 541 | |
cdcb006f ID |
542 | ieee80211_led_radio(local, 0); |
543 | ||
ea0c9253 ID |
544 | flush_workqueue(local->hw.workqueue); |
545 | ||
b2c258fb JB |
546 | tasklet_disable(&local->tx_pending_tasklet); |
547 | tasklet_disable(&local->tasklet); | |
548 | } | |
b2c258fb | 549 | |
f0706e82 JB |
550 | return 0; |
551 | } | |
552 | ||
eadc8d9e RR |
553 | int ieee80211_start_tx_ba_session(struct ieee80211_hw *hw, u8 *ra, u16 tid) |
554 | { | |
555 | struct ieee80211_local *local = hw_to_local(hw); | |
c2aa2885 | 556 | struct netdev_queue *txq; |
eadc8d9e RR |
557 | struct sta_info *sta; |
558 | struct ieee80211_sub_if_data *sdata; | |
559 | u16 start_seq_num = 0; | |
560 | u8 *state; | |
561 | int ret; | |
562 | DECLARE_MAC_BUF(mac); | |
563 | ||
564 | if (tid >= STA_TID_NUM) | |
565 | return -EINVAL; | |
566 | ||
567 | #ifdef CONFIG_MAC80211_HT_DEBUG | |
568 | printk(KERN_DEBUG "Open BA session requested for %s tid %u\n", | |
569 | print_mac(mac, ra), tid); | |
570 | #endif /* CONFIG_MAC80211_HT_DEBUG */ | |
571 | ||
d0709a65 JB |
572 | rcu_read_lock(); |
573 | ||
eadc8d9e RR |
574 | sta = sta_info_get(local, ra); |
575 | if (!sta) { | |
f4ea83dd | 576 | #ifdef CONFIG_MAC80211_HT_DEBUG |
eadc8d9e | 577 | printk(KERN_DEBUG "Could not find the station\n"); |
f4ea83dd | 578 | #endif |
b83f4e15 TW |
579 | ret = -ENOENT; |
580 | goto exit; | |
eadc8d9e RR |
581 | } |
582 | ||
07346f81 | 583 | spin_lock_bh(&sta->lock); |
eadc8d9e RR |
584 | |
585 | /* we have tried too many times, receiver does not want A-MPDU */ | |
cee24a3e | 586 | if (sta->ampdu_mlme.addba_req_num[tid] > HT_AGG_MAX_RETRIES) { |
eadc8d9e | 587 | ret = -EBUSY; |
b83f4e15 | 588 | goto err_unlock_sta; |
eadc8d9e RR |
589 | } |
590 | ||
cee24a3e | 591 | state = &sta->ampdu_mlme.tid_state_tx[tid]; |
eadc8d9e RR |
592 | /* check if the TID is not in aggregation flow already */ |
593 | if (*state != HT_AGG_STATE_IDLE) { | |
594 | #ifdef CONFIG_MAC80211_HT_DEBUG | |
595 | printk(KERN_DEBUG "BA request denied - session is not " | |
596 | "idle on tid %u\n", tid); | |
597 | #endif /* CONFIG_MAC80211_HT_DEBUG */ | |
598 | ret = -EAGAIN; | |
b83f4e15 | 599 | goto err_unlock_sta; |
eadc8d9e RR |
600 | } |
601 | ||
cee24a3e RR |
602 | /* prepare A-MPDU MLME for Tx aggregation */ |
603 | sta->ampdu_mlme.tid_tx[tid] = | |
604 | kmalloc(sizeof(struct tid_ampdu_tx), GFP_ATOMIC); | |
605 | if (!sta->ampdu_mlme.tid_tx[tid]) { | |
f4ea83dd | 606 | #ifdef CONFIG_MAC80211_HT_DEBUG |
cee24a3e RR |
607 | if (net_ratelimit()) |
608 | printk(KERN_ERR "allocate tx mlme to tid %d failed\n", | |
609 | tid); | |
f4ea83dd | 610 | #endif |
cee24a3e | 611 | ret = -ENOMEM; |
b83f4e15 | 612 | goto err_unlock_sta; |
cee24a3e RR |
613 | } |
614 | /* Tx timer */ | |
615 | sta->ampdu_mlme.tid_tx[tid]->addba_resp_timer.function = | |
616 | sta_addba_resp_timer_expired; | |
617 | sta->ampdu_mlme.tid_tx[tid]->addba_resp_timer.data = | |
618 | (unsigned long)&sta->timer_to_tid[tid]; | |
619 | init_timer(&sta->ampdu_mlme.tid_tx[tid]->addba_resp_timer); | |
620 | ||
eadc8d9e RR |
621 | /* ensure that TX flow won't interrupt us |
622 | * until the end of the call to requeue function */ | |
c2aa2885 DM |
623 | txq = &local->mdev->tx_queue; |
624 | spin_lock_bh(&txq->lock); | |
eadc8d9e RR |
625 | |
626 | /* create a new queue for this aggregation */ | |
9e723492 | 627 | ret = ieee80211_ht_agg_queue_add(local, sta, tid); |
eadc8d9e RR |
628 | |
629 | /* case no queue is available to aggregation | |
630 | * don't switch to aggregation */ | |
631 | if (ret) { | |
632 | #ifdef CONFIG_MAC80211_HT_DEBUG | |
cee24a3e | 633 | printk(KERN_DEBUG "BA request denied - queue unavailable for" |
eadc8d9e RR |
634 | " tid %d\n", tid); |
635 | #endif /* CONFIG_MAC80211_HT_DEBUG */ | |
b83f4e15 | 636 | goto err_unlock_queue; |
eadc8d9e | 637 | } |
d0709a65 | 638 | sdata = sta->sdata; |
eadc8d9e RR |
639 | |
640 | /* Ok, the Addba frame hasn't been sent yet, but if the driver calls the | |
641 | * call back right away, it must see that the flow has begun */ | |
642 | *state |= HT_ADDBA_REQUESTED_MSK; | |
643 | ||
644 | if (local->ops->ampdu_action) | |
645 | ret = local->ops->ampdu_action(hw, IEEE80211_AMPDU_TX_START, | |
646 | ra, tid, &start_seq_num); | |
647 | ||
648 | if (ret) { | |
649 | /* No need to requeue the packets in the agg queue, since we | |
650 | * held the tx lock: no packet could be enqueued to the newly | |
651 | * allocated queue */ | |
9e723492 | 652 | ieee80211_ht_agg_queue_remove(local, sta, tid, 0); |
eadc8d9e | 653 | #ifdef CONFIG_MAC80211_HT_DEBUG |
cee24a3e RR |
654 | printk(KERN_DEBUG "BA request denied - HW unavailable for" |
655 | " tid %d\n", tid); | |
eadc8d9e | 656 | #endif /* CONFIG_MAC80211_HT_DEBUG */ |
eadc8d9e | 657 | *state = HT_AGG_STATE_IDLE; |
b83f4e15 | 658 | goto err_unlock_queue; |
eadc8d9e RR |
659 | } |
660 | ||
661 | /* Will put all the packets in the new SW queue */ | |
9e723492 | 662 | ieee80211_requeue(local, ieee802_1d_to_ac[tid]); |
c2aa2885 | 663 | spin_unlock_bh(&txq->lock); |
b83f4e15 | 664 | spin_unlock_bh(&sta->lock); |
eadc8d9e | 665 | |
eadc8d9e RR |
666 | /* send an addBA request */ |
667 | sta->ampdu_mlme.dialog_token_allocator++; | |
cee24a3e | 668 | sta->ampdu_mlme.tid_tx[tid]->dialog_token = |
eadc8d9e | 669 | sta->ampdu_mlme.dialog_token_allocator; |
cee24a3e | 670 | sta->ampdu_mlme.tid_tx[tid]->ssn = start_seq_num; |
eadc8d9e | 671 | |
b83f4e15 | 672 | |
d0709a65 | 673 | ieee80211_send_addba_request(sta->sdata->dev, ra, tid, |
cee24a3e RR |
674 | sta->ampdu_mlme.tid_tx[tid]->dialog_token, |
675 | sta->ampdu_mlme.tid_tx[tid]->ssn, | |
eadc8d9e | 676 | 0x40, 5000); |
eadc8d9e | 677 | /* activate the timer for the recipient's addBA response */ |
cee24a3e | 678 | sta->ampdu_mlme.tid_tx[tid]->addba_resp_timer.expires = |
eadc8d9e | 679 | jiffies + ADDBA_RESP_INTERVAL; |
cee24a3e | 680 | add_timer(&sta->ampdu_mlme.tid_tx[tid]->addba_resp_timer); |
f4ea83dd | 681 | #ifdef CONFIG_MAC80211_HT_DEBUG |
eadc8d9e | 682 | printk(KERN_DEBUG "activated addBA response timer on tid %d\n", tid); |
f4ea83dd | 683 | #endif |
b83f4e15 | 684 | goto exit; |
eadc8d9e | 685 | |
b83f4e15 | 686 | err_unlock_queue: |
cee24a3e RR |
687 | kfree(sta->ampdu_mlme.tid_tx[tid]); |
688 | sta->ampdu_mlme.tid_tx[tid] = NULL; | |
c2aa2885 | 689 | spin_unlock_bh(&txq->lock); |
cee24a3e | 690 | ret = -EBUSY; |
b83f4e15 | 691 | err_unlock_sta: |
07346f81 | 692 | spin_unlock_bh(&sta->lock); |
b83f4e15 | 693 | exit: |
d0709a65 | 694 | rcu_read_unlock(); |
eadc8d9e RR |
695 | return ret; |
696 | } | |
697 | EXPORT_SYMBOL(ieee80211_start_tx_ba_session); | |
698 | ||
699 | int ieee80211_stop_tx_ba_session(struct ieee80211_hw *hw, | |
700 | u8 *ra, u16 tid, | |
701 | enum ieee80211_back_parties initiator) | |
702 | { | |
703 | struct ieee80211_local *local = hw_to_local(hw); | |
704 | struct sta_info *sta; | |
705 | u8 *state; | |
706 | int ret = 0; | |
707 | DECLARE_MAC_BUF(mac); | |
708 | ||
709 | if (tid >= STA_TID_NUM) | |
710 | return -EINVAL; | |
711 | ||
d0709a65 | 712 | rcu_read_lock(); |
eadc8d9e | 713 | sta = sta_info_get(local, ra); |
d0709a65 JB |
714 | if (!sta) { |
715 | rcu_read_unlock(); | |
eadc8d9e | 716 | return -ENOENT; |
d0709a65 | 717 | } |
eadc8d9e RR |
718 | |
719 | /* check if the TID is in aggregation */ | |
cee24a3e | 720 | state = &sta->ampdu_mlme.tid_state_tx[tid]; |
07346f81 | 721 | spin_lock_bh(&sta->lock); |
eadc8d9e RR |
722 | |
723 | if (*state != HT_AGG_STATE_OPERATIONAL) { | |
eadc8d9e RR |
724 | ret = -ENOENT; |
725 | goto stop_BA_exit; | |
726 | } | |
727 | ||
513a1025 RR |
728 | #ifdef CONFIG_MAC80211_HT_DEBUG |
729 | printk(KERN_DEBUG "Tx BA session stop requested for %s tid %u\n", | |
730 | print_mac(mac, ra), tid); | |
731 | #endif /* CONFIG_MAC80211_HT_DEBUG */ | |
732 | ||
eadc8d9e RR |
733 | ieee80211_stop_queue(hw, sta->tid_to_tx_q[tid]); |
734 | ||
735 | *state = HT_AGG_STATE_REQ_STOP_BA_MSK | | |
736 | (initiator << HT_AGG_STATE_INITIATOR_SHIFT); | |
737 | ||
738 | if (local->ops->ampdu_action) | |
739 | ret = local->ops->ampdu_action(hw, IEEE80211_AMPDU_TX_STOP, | |
740 | ra, tid, NULL); | |
741 | ||
742 | /* case HW denied going back to legacy */ | |
743 | if (ret) { | |
744 | WARN_ON(ret != -EBUSY); | |
745 | *state = HT_AGG_STATE_OPERATIONAL; | |
746 | ieee80211_wake_queue(hw, sta->tid_to_tx_q[tid]); | |
747 | goto stop_BA_exit; | |
748 | } | |
749 | ||
750 | stop_BA_exit: | |
07346f81 | 751 | spin_unlock_bh(&sta->lock); |
d0709a65 | 752 | rcu_read_unlock(); |
eadc8d9e RR |
753 | return ret; |
754 | } | |
755 | EXPORT_SYMBOL(ieee80211_stop_tx_ba_session); | |
756 | ||
757 | void ieee80211_start_tx_ba_cb(struct ieee80211_hw *hw, u8 *ra, u16 tid) | |
758 | { | |
759 | struct ieee80211_local *local = hw_to_local(hw); | |
760 | struct sta_info *sta; | |
761 | u8 *state; | |
762 | DECLARE_MAC_BUF(mac); | |
763 | ||
764 | if (tid >= STA_TID_NUM) { | |
f4ea83dd | 765 | #ifdef CONFIG_MAC80211_HT_DEBUG |
eadc8d9e RR |
766 | printk(KERN_DEBUG "Bad TID value: tid = %d (>= %d)\n", |
767 | tid, STA_TID_NUM); | |
f4ea83dd | 768 | #endif |
eadc8d9e RR |
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(); |
f4ea83dd | 776 | #ifdef CONFIG_MAC80211_HT_DEBUG |
eadc8d9e RR |
777 | printk(KERN_DEBUG "Could not find station: %s\n", |
778 | print_mac(mac, ra)); | |
f4ea83dd | 779 | #endif |
eadc8d9e RR |
780 | return; |
781 | } | |
782 | ||
cee24a3e | 783 | state = &sta->ampdu_mlme.tid_state_tx[tid]; |
07346f81 | 784 | spin_lock_bh(&sta->lock); |
eadc8d9e RR |
785 | |
786 | if (!(*state & HT_ADDBA_REQUESTED_MSK)) { | |
f4ea83dd | 787 | #ifdef CONFIG_MAC80211_HT_DEBUG |
eadc8d9e RR |
788 | printk(KERN_DEBUG "addBA was not requested yet, state is %d\n", |
789 | *state); | |
f4ea83dd | 790 | #endif |
07346f81 | 791 | spin_unlock_bh(&sta->lock); |
d0709a65 | 792 | rcu_read_unlock(); |
eadc8d9e RR |
793 | return; |
794 | } | |
795 | ||
796 | WARN_ON_ONCE(*state & HT_ADDBA_DRV_READY_MSK); | |
797 | ||
798 | *state |= HT_ADDBA_DRV_READY_MSK; | |
799 | ||
800 | if (*state == HT_AGG_STATE_OPERATIONAL) { | |
f4ea83dd | 801 | #ifdef CONFIG_MAC80211_HT_DEBUG |
eadc8d9e | 802 | printk(KERN_DEBUG "Aggregation is on for tid %d \n", tid); |
f4ea83dd | 803 | #endif |
eadc8d9e RR |
804 | ieee80211_wake_queue(hw, sta->tid_to_tx_q[tid]); |
805 | } | |
07346f81 | 806 | spin_unlock_bh(&sta->lock); |
d0709a65 | 807 | rcu_read_unlock(); |
eadc8d9e RR |
808 | } |
809 | EXPORT_SYMBOL(ieee80211_start_tx_ba_cb); | |
810 | ||
811 | void ieee80211_stop_tx_ba_cb(struct ieee80211_hw *hw, u8 *ra, u8 tid) | |
812 | { | |
813 | struct ieee80211_local *local = hw_to_local(hw); | |
c2aa2885 | 814 | struct netdev_queue *txq; |
eadc8d9e RR |
815 | struct sta_info *sta; |
816 | u8 *state; | |
817 | int agg_queue; | |
818 | DECLARE_MAC_BUF(mac); | |
819 | ||
820 | if (tid >= STA_TID_NUM) { | |
f4ea83dd | 821 | #ifdef CONFIG_MAC80211_HT_DEBUG |
eadc8d9e RR |
822 | printk(KERN_DEBUG "Bad TID value: tid = %d (>= %d)\n", |
823 | tid, STA_TID_NUM); | |
f4ea83dd | 824 | #endif |
eadc8d9e RR |
825 | return; |
826 | } | |
827 | ||
513a1025 RR |
828 | #ifdef CONFIG_MAC80211_HT_DEBUG |
829 | printk(KERN_DEBUG "Stopping Tx BA session for %s tid %d\n", | |
eadc8d9e | 830 | print_mac(mac, ra), tid); |
513a1025 | 831 | #endif /* CONFIG_MAC80211_HT_DEBUG */ |
eadc8d9e | 832 | |
d0709a65 | 833 | rcu_read_lock(); |
eadc8d9e RR |
834 | sta = sta_info_get(local, ra); |
835 | if (!sta) { | |
f4ea83dd | 836 | #ifdef CONFIG_MAC80211_HT_DEBUG |
eadc8d9e RR |
837 | printk(KERN_DEBUG "Could not find station: %s\n", |
838 | print_mac(mac, ra)); | |
f4ea83dd | 839 | #endif |
d0709a65 | 840 | rcu_read_unlock(); |
eadc8d9e RR |
841 | return; |
842 | } | |
cee24a3e | 843 | state = &sta->ampdu_mlme.tid_state_tx[tid]; |
eadc8d9e | 844 | |
b83f4e15 TW |
845 | /* NOTE: no need to use sta->lock in this state check, as |
846 | * ieee80211_stop_tx_ba_session will let only | |
847 | * one stop call to pass through per sta/tid */ | |
eadc8d9e | 848 | if ((*state & HT_AGG_STATE_REQ_STOP_BA_MSK) == 0) { |
f4ea83dd | 849 | #ifdef CONFIG_MAC80211_HT_DEBUG |
eadc8d9e | 850 | printk(KERN_DEBUG "unexpected callback to A-MPDU stop\n"); |
f4ea83dd | 851 | #endif |
d0709a65 | 852 | rcu_read_unlock(); |
eadc8d9e RR |
853 | return; |
854 | } | |
855 | ||
856 | if (*state & HT_AGG_STATE_INITIATOR_MSK) | |
d0709a65 | 857 | ieee80211_send_delba(sta->sdata->dev, ra, tid, |
eadc8d9e RR |
858 | WLAN_BACK_INITIATOR, WLAN_REASON_QSTA_NOT_USE); |
859 | ||
860 | agg_queue = sta->tid_to_tx_q[tid]; | |
861 | ||
862 | /* avoid ordering issues: we are the only one that can modify | |
863 | * the content of the qdiscs */ | |
c2aa2885 DM |
864 | txq = &local->mdev->tx_queue; |
865 | spin_lock_bh(&txq->lock); | |
eadc8d9e | 866 | /* remove the queue for this aggregation */ |
9e723492 | 867 | ieee80211_ht_agg_queue_remove(local, sta, tid, 1); |
c2aa2885 | 868 | spin_unlock_bh(&txq->lock); |
eadc8d9e RR |
869 | |
870 | /* we just requeued the all the frames that were in the removed | |
86d804e1 | 871 | * queue, and since we might miss a softirq we do netif_schedule_queue. |
eadc8d9e RR |
872 | * ieee80211_wake_queue is not used here as this queue is not |
873 | * necessarily stopped */ | |
86d804e1 | 874 | netif_schedule_queue(txq); |
b83f4e15 | 875 | spin_lock_bh(&sta->lock); |
eadc8d9e | 876 | *state = HT_AGG_STATE_IDLE; |
cee24a3e RR |
877 | sta->ampdu_mlme.addba_req_num[tid] = 0; |
878 | kfree(sta->ampdu_mlme.tid_tx[tid]); | |
879 | sta->ampdu_mlme.tid_tx[tid] = NULL; | |
07346f81 | 880 | spin_unlock_bh(&sta->lock); |
eadc8d9e | 881 | |
d0709a65 | 882 | rcu_read_unlock(); |
eadc8d9e RR |
883 | } |
884 | EXPORT_SYMBOL(ieee80211_stop_tx_ba_cb); | |
885 | ||
886 | void ieee80211_start_tx_ba_cb_irqsafe(struct ieee80211_hw *hw, | |
887 | const u8 *ra, u16 tid) | |
888 | { | |
889 | struct ieee80211_local *local = hw_to_local(hw); | |
890 | struct ieee80211_ra_tid *ra_tid; | |
891 | struct sk_buff *skb = dev_alloc_skb(0); | |
892 | ||
893 | if (unlikely(!skb)) { | |
f4ea83dd | 894 | #ifdef CONFIG_MAC80211_HT_DEBUG |
eadc8d9e RR |
895 | if (net_ratelimit()) |
896 | printk(KERN_WARNING "%s: Not enough memory, " | |
897 | "dropping start BA session", skb->dev->name); | |
f4ea83dd | 898 | #endif |
eadc8d9e RR |
899 | return; |
900 | } | |
901 | ra_tid = (struct ieee80211_ra_tid *) &skb->cb; | |
902 | memcpy(&ra_tid->ra, ra, ETH_ALEN); | |
903 | ra_tid->tid = tid; | |
904 | ||
905 | skb->pkt_type = IEEE80211_ADDBA_MSG; | |
906 | skb_queue_tail(&local->skb_queue, skb); | |
907 | tasklet_schedule(&local->tasklet); | |
908 | } | |
909 | EXPORT_SYMBOL(ieee80211_start_tx_ba_cb_irqsafe); | |
910 | ||
911 | void ieee80211_stop_tx_ba_cb_irqsafe(struct ieee80211_hw *hw, | |
912 | const u8 *ra, u16 tid) | |
913 | { | |
914 | struct ieee80211_local *local = hw_to_local(hw); | |
915 | struct ieee80211_ra_tid *ra_tid; | |
916 | struct sk_buff *skb = dev_alloc_skb(0); | |
917 | ||
918 | if (unlikely(!skb)) { | |
f4ea83dd | 919 | #ifdef CONFIG_MAC80211_HT_DEBUG |
eadc8d9e RR |
920 | if (net_ratelimit()) |
921 | printk(KERN_WARNING "%s: Not enough memory, " | |
922 | "dropping stop BA session", skb->dev->name); | |
f4ea83dd | 923 | #endif |
eadc8d9e RR |
924 | return; |
925 | } | |
926 | ra_tid = (struct ieee80211_ra_tid *) &skb->cb; | |
927 | memcpy(&ra_tid->ra, ra, ETH_ALEN); | |
928 | ra_tid->tid = tid; | |
929 | ||
930 | skb->pkt_type = IEEE80211_DELBA_MSG; | |
931 | skb_queue_tail(&local->skb_queue, skb); | |
932 | tasklet_schedule(&local->tasklet); | |
933 | } | |
934 | EXPORT_SYMBOL(ieee80211_stop_tx_ba_cb_irqsafe); | |
935 | ||
f0706e82 JB |
936 | static void ieee80211_set_multicast_list(struct net_device *dev) |
937 | { | |
938 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
939 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
4150c572 | 940 | int allmulti, promisc, sdata_allmulti, sdata_promisc; |
f0706e82 | 941 | |
4150c572 JB |
942 | allmulti = !!(dev->flags & IFF_ALLMULTI); |
943 | promisc = !!(dev->flags & IFF_PROMISC); | |
b52f2198 JB |
944 | sdata_allmulti = !!(sdata->flags & IEEE80211_SDATA_ALLMULTI); |
945 | sdata_promisc = !!(sdata->flags & IEEE80211_SDATA_PROMISC); | |
4150c572 JB |
946 | |
947 | if (allmulti != sdata_allmulti) { | |
948 | if (dev->flags & IFF_ALLMULTI) | |
53918994 | 949 | atomic_inc(&local->iff_allmultis); |
4150c572 | 950 | else |
53918994 | 951 | atomic_dec(&local->iff_allmultis); |
13262ffd | 952 | sdata->flags ^= IEEE80211_SDATA_ALLMULTI; |
f0706e82 | 953 | } |
4150c572 JB |
954 | |
955 | if (promisc != sdata_promisc) { | |
956 | if (dev->flags & IFF_PROMISC) | |
53918994 | 957 | atomic_inc(&local->iff_promiscs); |
4150c572 | 958 | else |
53918994 | 959 | atomic_dec(&local->iff_promiscs); |
13262ffd | 960 | sdata->flags ^= IEEE80211_SDATA_PROMISC; |
f0706e82 | 961 | } |
4150c572 JB |
962 | |
963 | dev_mc_sync(local->mdev, dev); | |
f0706e82 JB |
964 | } |
965 | ||
3b04ddde SH |
966 | static const struct header_ops ieee80211_header_ops = { |
967 | .create = eth_header, | |
968 | .parse = header_parse_80211, | |
969 | .rebuild = eth_rebuild_header, | |
970 | .cache = eth_header_cache, | |
971 | .cache_update = eth_header_cache_update, | |
972 | }; | |
973 | ||
b2c258fb | 974 | void ieee80211_if_setup(struct net_device *dev) |
f0706e82 | 975 | { |
b2c258fb JB |
976 | ether_setup(dev); |
977 | dev->hard_start_xmit = ieee80211_subif_start_xmit; | |
978 | dev->wireless_handlers = &ieee80211_iw_handler_def; | |
979 | dev->set_multicast_list = ieee80211_set_multicast_list; | |
980 | dev->change_mtu = ieee80211_change_mtu; | |
b2c258fb JB |
981 | dev->open = ieee80211_open; |
982 | dev->stop = ieee80211_stop; | |
75636525 | 983 | dev->destructor = free_netdev; |
b2c258fb | 984 | } |
f0706e82 | 985 | |
b2c258fb JB |
986 | /* everything else */ |
987 | ||
b2c258fb | 988 | static int __ieee80211_if_config(struct net_device *dev, |
e039fa4a | 989 | struct sk_buff *beacon) |
b2c258fb JB |
990 | { |
991 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
992 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
993 | struct ieee80211_if_conf conf; | |
b2c258fb JB |
994 | |
995 | if (!local->ops->config_interface || !netif_running(dev)) | |
f0706e82 | 996 | return 0; |
f0706e82 | 997 | |
b2c258fb | 998 | memset(&conf, 0, sizeof(conf)); |
51fb61e7 JB |
999 | conf.type = sdata->vif.type; |
1000 | if (sdata->vif.type == IEEE80211_IF_TYPE_STA || | |
1001 | sdata->vif.type == IEEE80211_IF_TYPE_IBSS) { | |
4150c572 | 1002 | conf.bssid = sdata->u.sta.bssid; |
b2c258fb JB |
1003 | conf.ssid = sdata->u.sta.ssid; |
1004 | conf.ssid_len = sdata->u.sta.ssid_len; | |
902acc78 | 1005 | } else if (ieee80211_vif_is_mesh(&sdata->vif)) { |
f7a92144 LCC |
1006 | conf.beacon = beacon; |
1007 | ieee80211_start_mesh(dev); | |
51fb61e7 | 1008 | } else if (sdata->vif.type == IEEE80211_IF_TYPE_AP) { |
b2c258fb JB |
1009 | conf.ssid = sdata->u.ap.ssid; |
1010 | conf.ssid_len = sdata->u.ap.ssid_len; | |
b2c258fb | 1011 | conf.beacon = beacon; |
f0706e82 | 1012 | } |
b2c258fb | 1013 | return local->ops->config_interface(local_to_hw(local), |
32bfd35d | 1014 | &sdata->vif, &conf); |
f0706e82 JB |
1015 | } |
1016 | ||
b2c258fb JB |
1017 | int ieee80211_if_config(struct net_device *dev) |
1018 | { | |
f7a92144 LCC |
1019 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
1020 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
1021 | if (sdata->vif.type == IEEE80211_IF_TYPE_MESH_POINT && | |
1022 | (local->hw.flags & IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE)) | |
1023 | return ieee80211_if_config_beacon(dev); | |
e039fa4a | 1024 | return __ieee80211_if_config(dev, NULL); |
b2c258fb | 1025 | } |
f0706e82 | 1026 | |
b2c258fb | 1027 | int ieee80211_if_config_beacon(struct net_device *dev) |
f0706e82 | 1028 | { |
f0706e82 | 1029 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); |
32bfd35d | 1030 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
b2c258fb | 1031 | struct sk_buff *skb; |
f0706e82 | 1032 | |
b2c258fb | 1033 | if (!(local->hw.flags & IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE)) |
f0706e82 | 1034 | return 0; |
e039fa4a | 1035 | skb = ieee80211_beacon_get(local_to_hw(local), &sdata->vif); |
b2c258fb JB |
1036 | if (!skb) |
1037 | return -ENOMEM; | |
e039fa4a | 1038 | return __ieee80211_if_config(dev, skb); |
b2c258fb | 1039 | } |
f0706e82 | 1040 | |
b2c258fb JB |
1041 | int ieee80211_hw_config(struct ieee80211_local *local) |
1042 | { | |
b2c258fb JB |
1043 | struct ieee80211_channel *chan; |
1044 | int ret = 0; | |
f0706e82 | 1045 | |
8318d78a | 1046 | if (local->sta_sw_scanning) |
b2c258fb | 1047 | chan = local->scan_channel; |
8318d78a | 1048 | else |
b2c258fb | 1049 | chan = local->oper_channel; |
f0706e82 | 1050 | |
8318d78a JB |
1051 | local->hw.conf.channel = chan; |
1052 | ||
1053 | if (!local->hw.conf.power_level) | |
1054 | local->hw.conf.power_level = chan->max_power; | |
1055 | else | |
1056 | local->hw.conf.power_level = min(chan->max_power, | |
1057 | local->hw.conf.power_level); | |
1058 | ||
1059 | local->hw.conf.max_antenna_gain = chan->max_antenna_gain; | |
f0706e82 | 1060 | |
b2c258fb | 1061 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
8318d78a JB |
1062 | printk(KERN_DEBUG "%s: HW CONFIG: freq=%d\n", |
1063 | wiphy_name(local->hw.wiphy), chan->center_freq); | |
1064 | #endif | |
b2c258fb | 1065 | |
f7c4daed | 1066 | if (local->open_count) |
b2c258fb | 1067 | ret = local->ops->config(local_to_hw(local), &local->hw.conf); |
f0706e82 | 1068 | |
b2c258fb JB |
1069 | return ret; |
1070 | } | |
f0706e82 | 1071 | |
d3c990fb | 1072 | /** |
38668c05 TW |
1073 | * ieee80211_handle_ht should be used only after legacy configuration |
1074 | * has been determined namely band, as ht configuration depends upon | |
1075 | * the hardware's HT abilities for a _specific_ band. | |
d3c990fb | 1076 | */ |
38668c05 | 1077 | u32 ieee80211_handle_ht(struct ieee80211_local *local, int enable_ht, |
d3c990fb RR |
1078 | struct ieee80211_ht_info *req_ht_cap, |
1079 | struct ieee80211_ht_bss_info *req_bss_cap) | |
1080 | { | |
1081 | struct ieee80211_conf *conf = &local->hw.conf; | |
8318d78a | 1082 | struct ieee80211_supported_band *sband; |
38668c05 TW |
1083 | struct ieee80211_ht_info ht_conf; |
1084 | struct ieee80211_ht_bss_info ht_bss_conf; | |
38668c05 | 1085 | u32 changed = 0; |
edcdf8b2 RR |
1086 | int i; |
1087 | u8 max_tx_streams = IEEE80211_HT_CAP_MAX_STREAMS; | |
1088 | u8 tx_mcs_set_cap; | |
d3c990fb | 1089 | |
8318d78a JB |
1090 | sband = local->hw.wiphy->bands[conf->channel->band]; |
1091 | ||
edcdf8b2 RR |
1092 | memset(&ht_conf, 0, sizeof(struct ieee80211_ht_info)); |
1093 | memset(&ht_bss_conf, 0, sizeof(struct ieee80211_ht_bss_info)); | |
1094 | ||
d3c990fb | 1095 | /* HT is not supported */ |
8318d78a | 1096 | if (!sband->ht_info.ht_supported) { |
d3c990fb | 1097 | conf->flags &= ~IEEE80211_CONF_SUPPORT_HT_MODE; |
edcdf8b2 | 1098 | goto out; |
d3c990fb RR |
1099 | } |
1100 | ||
edcdf8b2 RR |
1101 | /* disable HT */ |
1102 | if (!enable_ht) { | |
1103 | if (conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE) | |
38668c05 | 1104 | changed |= BSS_CHANGED_HT; |
edcdf8b2 RR |
1105 | conf->flags &= ~IEEE80211_CONF_SUPPORT_HT_MODE; |
1106 | conf->ht_conf.ht_supported = 0; | |
1107 | goto out; | |
1108 | } | |
38668c05 | 1109 | |
38668c05 | 1110 | |
edcdf8b2 RR |
1111 | if (!(conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE)) |
1112 | changed |= BSS_CHANGED_HT; | |
38668c05 | 1113 | |
edcdf8b2 RR |
1114 | conf->flags |= IEEE80211_CONF_SUPPORT_HT_MODE; |
1115 | ht_conf.ht_supported = 1; | |
38668c05 | 1116 | |
edcdf8b2 RR |
1117 | ht_conf.cap = req_ht_cap->cap & sband->ht_info.cap; |
1118 | ht_conf.cap &= ~(IEEE80211_HT_CAP_MIMO_PS); | |
1119 | ht_conf.cap |= sband->ht_info.cap & IEEE80211_HT_CAP_MIMO_PS; | |
1120 | ht_bss_conf.primary_channel = req_bss_cap->primary_channel; | |
1121 | ht_bss_conf.bss_cap = req_bss_cap->bss_cap; | |
1122 | ht_bss_conf.bss_op_mode = req_bss_cap->bss_op_mode; | |
38668c05 | 1123 | |
edcdf8b2 RR |
1124 | ht_conf.ampdu_factor = req_ht_cap->ampdu_factor; |
1125 | ht_conf.ampdu_density = req_ht_cap->ampdu_density; | |
38668c05 | 1126 | |
edcdf8b2 RR |
1127 | /* Bits 96-100 */ |
1128 | tx_mcs_set_cap = sband->ht_info.supp_mcs_set[12]; | |
1129 | ||
1130 | /* configure suppoerted Tx MCS according to requested MCS | |
1131 | * (based in most cases on Rx capabilities of peer) and self | |
1132 | * Tx MCS capabilities (as defined by low level driver HW | |
1133 | * Tx capabilities) */ | |
1134 | if (!(tx_mcs_set_cap & IEEE80211_HT_CAP_MCS_TX_DEFINED)) | |
1135 | goto check_changed; | |
d3c990fb | 1136 | |
edcdf8b2 RR |
1137 | /* Counting from 0 therfore + 1 */ |
1138 | if (tx_mcs_set_cap & IEEE80211_HT_CAP_MCS_TX_RX_DIFF) | |
1139 | max_tx_streams = ((tx_mcs_set_cap & | |
1140 | IEEE80211_HT_CAP_MCS_TX_STREAMS) >> 2) + 1; | |
1141 | ||
1142 | for (i = 0; i < max_tx_streams; i++) | |
1143 | ht_conf.supp_mcs_set[i] = | |
1144 | sband->ht_info.supp_mcs_set[i] & | |
1145 | req_ht_cap->supp_mcs_set[i]; | |
1146 | ||
1147 | if (tx_mcs_set_cap & IEEE80211_HT_CAP_MCS_TX_UEQM) | |
1148 | for (i = IEEE80211_SUPP_MCS_SET_UEQM; | |
1149 | i < IEEE80211_SUPP_MCS_SET_LEN; i++) | |
1150 | ht_conf.supp_mcs_set[i] = | |
1151 | sband->ht_info.supp_mcs_set[i] & | |
1152 | req_ht_cap->supp_mcs_set[i]; | |
1153 | ||
1154 | check_changed: | |
1155 | /* if bss configuration changed store the new one */ | |
1156 | if (memcmp(&conf->ht_conf, &ht_conf, sizeof(ht_conf)) || | |
1157 | memcmp(&conf->ht_bss_conf, &ht_bss_conf, sizeof(ht_bss_conf))) { | |
1158 | changed |= BSS_CHANGED_HT; | |
1159 | memcpy(&conf->ht_conf, &ht_conf, sizeof(ht_conf)); | |
1160 | memcpy(&conf->ht_bss_conf, &ht_bss_conf, sizeof(ht_bss_conf)); | |
1161 | } | |
1162 | out: | |
38668c05 | 1163 | return changed; |
d3c990fb RR |
1164 | } |
1165 | ||
471b3efd JB |
1166 | void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, |
1167 | u32 changed) | |
d9430a32 | 1168 | { |
471b3efd JB |
1169 | struct ieee80211_local *local = sdata->local; |
1170 | ||
1171 | if (!changed) | |
1172 | return; | |
1173 | ||
1174 | if (local->ops->bss_info_changed) | |
1175 | local->ops->bss_info_changed(local_to_hw(local), | |
1176 | &sdata->vif, | |
1177 | &sdata->bss_conf, | |
1178 | changed); | |
d9430a32 DD |
1179 | } |
1180 | ||
fc32f924 | 1181 | u32 ieee80211_reset_erp_info(struct net_device *dev) |
d9430a32 DD |
1182 | { |
1183 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
1184 | ||
471b3efd JB |
1185 | sdata->bss_conf.use_cts_prot = 0; |
1186 | sdata->bss_conf.use_short_preamble = 0; | |
fc32f924 | 1187 | return BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_ERP_PREAMBLE; |
d9430a32 DD |
1188 | } |
1189 | ||
f0706e82 | 1190 | void ieee80211_tx_status_irqsafe(struct ieee80211_hw *hw, |
e039fa4a | 1191 | struct sk_buff *skb) |
f0706e82 JB |
1192 | { |
1193 | struct ieee80211_local *local = hw_to_local(hw); | |
e039fa4a | 1194 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
f0706e82 JB |
1195 | int tmp; |
1196 | ||
1197 | skb->dev = local->mdev; | |
f0706e82 | 1198 | skb->pkt_type = IEEE80211_TX_STATUS_MSG; |
e039fa4a | 1199 | skb_queue_tail(info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS ? |
f0706e82 JB |
1200 | &local->skb_queue : &local->skb_queue_unreliable, skb); |
1201 | tmp = skb_queue_len(&local->skb_queue) + | |
1202 | skb_queue_len(&local->skb_queue_unreliable); | |
1203 | while (tmp > IEEE80211_IRQSAFE_QUEUE_LIMIT && | |
1204 | (skb = skb_dequeue(&local->skb_queue_unreliable))) { | |
f0706e82 JB |
1205 | dev_kfree_skb_irq(skb); |
1206 | tmp--; | |
1207 | I802_DEBUG_INC(local->tx_status_drop); | |
1208 | } | |
1209 | tasklet_schedule(&local->tasklet); | |
1210 | } | |
1211 | EXPORT_SYMBOL(ieee80211_tx_status_irqsafe); | |
1212 | ||
1213 | static void ieee80211_tasklet_handler(unsigned long data) | |
1214 | { | |
1215 | struct ieee80211_local *local = (struct ieee80211_local *) data; | |
1216 | struct sk_buff *skb; | |
1217 | struct ieee80211_rx_status rx_status; | |
eadc8d9e | 1218 | struct ieee80211_ra_tid *ra_tid; |
f0706e82 JB |
1219 | |
1220 | while ((skb = skb_dequeue(&local->skb_queue)) || | |
1221 | (skb = skb_dequeue(&local->skb_queue_unreliable))) { | |
1222 | switch (skb->pkt_type) { | |
1223 | case IEEE80211_RX_MSG: | |
1224 | /* status is in skb->cb */ | |
1225 | memcpy(&rx_status, skb->cb, sizeof(rx_status)); | |
51fb61e7 | 1226 | /* Clear skb->pkt_type in order to not confuse kernel |
f0706e82 JB |
1227 | * netstack. */ |
1228 | skb->pkt_type = 0; | |
1229 | __ieee80211_rx(local_to_hw(local), skb, &rx_status); | |
1230 | break; | |
1231 | case IEEE80211_TX_STATUS_MSG: | |
f0706e82 | 1232 | skb->pkt_type = 0; |
e039fa4a | 1233 | ieee80211_tx_status(local_to_hw(local), skb); |
f0706e82 | 1234 | break; |
eadc8d9e RR |
1235 | case IEEE80211_DELBA_MSG: |
1236 | ra_tid = (struct ieee80211_ra_tid *) &skb->cb; | |
1237 | ieee80211_stop_tx_ba_cb(local_to_hw(local), | |
1238 | ra_tid->ra, ra_tid->tid); | |
1239 | dev_kfree_skb(skb); | |
1240 | break; | |
1241 | case IEEE80211_ADDBA_MSG: | |
1242 | ra_tid = (struct ieee80211_ra_tid *) &skb->cb; | |
1243 | ieee80211_start_tx_ba_cb(local_to_hw(local), | |
1244 | ra_tid->ra, ra_tid->tid); | |
1245 | dev_kfree_skb(skb); | |
1246 | break ; | |
f4ea83dd JB |
1247 | default: |
1248 | WARN_ON(1); | |
f0706e82 JB |
1249 | dev_kfree_skb(skb); |
1250 | break; | |
1251 | } | |
1252 | } | |
1253 | } | |
1254 | ||
f0706e82 JB |
1255 | /* Remove added headers (e.g., QoS control), encryption header/MIC, etc. to |
1256 | * make a prepared TX frame (one that has been given to hw) to look like brand | |
1257 | * new IEEE 802.11 frame that is ready to go through TX processing again. | |
1258 | * Also, tx_packet_data in cb is restored from tx_control. */ | |
1259 | static void ieee80211_remove_tx_extra(struct ieee80211_local *local, | |
1260 | struct ieee80211_key *key, | |
e039fa4a | 1261 | struct sk_buff *skb) |
f0706e82 JB |
1262 | { |
1263 | int hdrlen, iv_len, mic_len; | |
e039fa4a JB |
1264 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
1265 | ||
1266 | info->flags &= IEEE80211_TX_CTL_REQ_TX_STATUS | | |
1267 | IEEE80211_TX_CTL_DO_NOT_ENCRYPT | | |
1268 | IEEE80211_TX_CTL_REQUEUE | | |
1269 | IEEE80211_TX_CTL_EAPOL_FRAME; | |
f0706e82 JB |
1270 | |
1271 | hdrlen = ieee80211_get_hdrlen_from_skb(skb); | |
1272 | ||
1273 | if (!key) | |
1274 | goto no_key; | |
1275 | ||
8f20fc24 | 1276 | switch (key->conf.alg) { |
f0706e82 JB |
1277 | case ALG_WEP: |
1278 | iv_len = WEP_IV_LEN; | |
1279 | mic_len = WEP_ICV_LEN; | |
1280 | break; | |
1281 | case ALG_TKIP: | |
1282 | iv_len = TKIP_IV_LEN; | |
1283 | mic_len = TKIP_ICV_LEN; | |
1284 | break; | |
1285 | case ALG_CCMP: | |
1286 | iv_len = CCMP_HDR_LEN; | |
1287 | mic_len = CCMP_MIC_LEN; | |
1288 | break; | |
1289 | default: | |
1290 | goto no_key; | |
1291 | } | |
1292 | ||
8f20fc24 | 1293 | if (skb->len >= mic_len && |
11a843b7 | 1294 | !(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)) |
f0706e82 JB |
1295 | skb_trim(skb, skb->len - mic_len); |
1296 | if (skb->len >= iv_len && skb->len > hdrlen) { | |
1297 | memmove(skb->data + iv_len, skb->data, hdrlen); | |
1298 | skb_pull(skb, iv_len); | |
1299 | } | |
1300 | ||
1301 | no_key: | |
1302 | { | |
1303 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; | |
1304 | u16 fc = le16_to_cpu(hdr->frame_control); | |
1305 | if ((fc & 0x8C) == 0x88) /* QoS Control Field */ { | |
1306 | fc &= ~IEEE80211_STYPE_QOS_DATA; | |
1307 | hdr->frame_control = cpu_to_le16(fc); | |
1308 | memmove(skb->data + 2, skb->data, hdrlen - 2); | |
1309 | skb_pull(skb, 2); | |
1310 | } | |
1311 | } | |
1312 | } | |
1313 | ||
d46e144b JB |
1314 | static void ieee80211_handle_filtered_frame(struct ieee80211_local *local, |
1315 | struct sta_info *sta, | |
e039fa4a | 1316 | struct sk_buff *skb) |
d46e144b | 1317 | { |
e039fa4a JB |
1318 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
1319 | ||
d46e144b JB |
1320 | sta->tx_filtered_count++; |
1321 | ||
1322 | /* | |
1323 | * Clear the TX filter mask for this STA when sending the next | |
1324 | * packet. If the STA went to power save mode, this will happen | |
f6d97104 | 1325 | * when it wakes up for the next time. |
d46e144b | 1326 | */ |
07346f81 | 1327 | set_sta_flags(sta, WLAN_STA_CLEAR_PS_FILT); |
d46e144b JB |
1328 | |
1329 | /* | |
1330 | * This code races in the following way: | |
1331 | * | |
1332 | * (1) STA sends frame indicating it will go to sleep and does so | |
1333 | * (2) hardware/firmware adds STA to filter list, passes frame up | |
1334 | * (3) hardware/firmware processes TX fifo and suppresses a frame | |
1335 | * (4) we get TX status before having processed the frame and | |
1336 | * knowing that the STA has gone to sleep. | |
1337 | * | |
1338 | * This is actually quite unlikely even when both those events are | |
1339 | * processed from interrupts coming in quickly after one another or | |
1340 | * even at the same time because we queue both TX status events and | |
1341 | * RX frames to be processed by a tasklet and process them in the | |
1342 | * same order that they were received or TX status last. Hence, there | |
1343 | * is no race as long as the frame RX is processed before the next TX | |
1344 | * status, which drivers can ensure, see below. | |
1345 | * | |
1346 | * Note that this can only happen if the hardware or firmware can | |
1347 | * actually add STAs to the filter list, if this is done by the | |
1348 | * driver in response to set_tim() (which will only reduce the race | |
1349 | * this whole filtering tries to solve, not completely solve it) | |
1350 | * this situation cannot happen. | |
1351 | * | |
1352 | * To completely solve this race drivers need to make sure that they | |
1353 | * (a) don't mix the irq-safe/not irq-safe TX status/RX processing | |
1354 | * functions and | |
1355 | * (b) always process RX events before TX status events if ordering | |
1356 | * can be unknown, for example with different interrupt status | |
1357 | * bits. | |
1358 | */ | |
07346f81 | 1359 | if (test_sta_flags(sta, WLAN_STA_PS) && |
d46e144b | 1360 | skb_queue_len(&sta->tx_filtered) < STA_MAX_TX_BUFFER) { |
e039fa4a | 1361 | ieee80211_remove_tx_extra(local, sta->key, skb); |
d46e144b JB |
1362 | skb_queue_tail(&sta->tx_filtered, skb); |
1363 | return; | |
1364 | } | |
1365 | ||
07346f81 | 1366 | if (!test_sta_flags(sta, WLAN_STA_PS) && |
e039fa4a | 1367 | !(info->flags & IEEE80211_TX_CTL_REQUEUE)) { |
d46e144b | 1368 | /* Software retry the packet once */ |
e039fa4a JB |
1369 | info->flags |= IEEE80211_TX_CTL_REQUEUE; |
1370 | ieee80211_remove_tx_extra(local, sta->key, skb); | |
d46e144b JB |
1371 | dev_queue_xmit(skb); |
1372 | return; | |
1373 | } | |
1374 | ||
f4ea83dd | 1375 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
d46e144b JB |
1376 | if (net_ratelimit()) |
1377 | printk(KERN_DEBUG "%s: dropped TX filtered frame, " | |
1378 | "queue_len=%d PS=%d @%lu\n", | |
1379 | wiphy_name(local->hw.wiphy), | |
1380 | skb_queue_len(&sta->tx_filtered), | |
07346f81 | 1381 | !!test_sta_flags(sta, WLAN_STA_PS), jiffies); |
f4ea83dd | 1382 | #endif |
d46e144b JB |
1383 | dev_kfree_skb(skb); |
1384 | } | |
1385 | ||
e039fa4a | 1386 | void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb) |
f0706e82 JB |
1387 | { |
1388 | struct sk_buff *skb2; | |
1389 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; | |
1390 | struct ieee80211_local *local = hw_to_local(hw); | |
e039fa4a | 1391 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
f0706e82 | 1392 | u16 frag, type; |
429a3805 | 1393 | __le16 fc; |
b306f453 JB |
1394 | struct ieee80211_tx_status_rtap_hdr *rthdr; |
1395 | struct ieee80211_sub_if_data *sdata; | |
3d30d949 | 1396 | struct net_device *prev_dev = NULL; |
429a3805 | 1397 | struct sta_info *sta; |
f0706e82 | 1398 | |
d0709a65 JB |
1399 | rcu_read_lock(); |
1400 | ||
e039fa4a | 1401 | if (info->status.excessive_retries) { |
f0706e82 JB |
1402 | sta = sta_info_get(local, hdr->addr1); |
1403 | if (sta) { | |
07346f81 | 1404 | if (test_sta_flags(sta, WLAN_STA_PS)) { |
d46e144b JB |
1405 | /* |
1406 | * The STA is in power save mode, so assume | |
f0706e82 JB |
1407 | * that this TX packet failed because of that. |
1408 | */ | |
e039fa4a | 1409 | ieee80211_handle_filtered_frame(local, sta, skb); |
d0709a65 | 1410 | rcu_read_unlock(); |
d46e144b | 1411 | return; |
f0706e82 | 1412 | } |
f0706e82 JB |
1413 | } |
1414 | } | |
1415 | ||
429a3805 RR |
1416 | fc = hdr->frame_control; |
1417 | ||
1418 | if ((info->flags & IEEE80211_TX_STAT_AMPDU_NO_BACK) && | |
1419 | (ieee80211_is_data_qos(fc))) { | |
1420 | u16 tid, ssn; | |
1421 | u8 *qc; | |
1422 | sta = sta_info_get(local, hdr->addr1); | |
1423 | if (sta) { | |
1424 | qc = ieee80211_get_qos_ctl(hdr); | |
1425 | tid = qc[0] & 0xf; | |
1426 | ssn = ((le16_to_cpu(hdr->seq_ctrl) + 0x10) | |
1427 | & IEEE80211_SCTL_SEQ); | |
1428 | ieee80211_send_bar(sta->sdata->dev, hdr->addr1, | |
1429 | tid, ssn); | |
1430 | } | |
1431 | } | |
1432 | ||
e039fa4a | 1433 | if (info->flags & IEEE80211_TX_STAT_TX_FILTERED) { |
f0706e82 JB |
1434 | sta = sta_info_get(local, hdr->addr1); |
1435 | if (sta) { | |
e039fa4a | 1436 | ieee80211_handle_filtered_frame(local, sta, skb); |
d0709a65 | 1437 | rcu_read_unlock(); |
f0706e82 JB |
1438 | return; |
1439 | } | |
1abbe498 | 1440 | } else |
e039fa4a | 1441 | rate_control_tx_status(local->mdev, skb); |
f0706e82 | 1442 | |
d0709a65 JB |
1443 | rcu_read_unlock(); |
1444 | ||
f0706e82 JB |
1445 | ieee80211_led_tx(local, 0); |
1446 | ||
1447 | /* SNMP counters | |
1448 | * Fragments are passed to low-level drivers as separate skbs, so these | |
1449 | * are actually fragments, not frames. Update frame counters only for | |
1450 | * the first fragment of the frame. */ | |
1451 | ||
1452 | frag = le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_FRAG; | |
1453 | type = le16_to_cpu(hdr->frame_control) & IEEE80211_FCTL_FTYPE; | |
1454 | ||
e039fa4a | 1455 | if (info->flags & IEEE80211_TX_STAT_ACK) { |
f0706e82 JB |
1456 | if (frag == 0) { |
1457 | local->dot11TransmittedFrameCount++; | |
1458 | if (is_multicast_ether_addr(hdr->addr1)) | |
1459 | local->dot11MulticastTransmittedFrameCount++; | |
e039fa4a | 1460 | if (info->status.retry_count > 0) |
f0706e82 | 1461 | local->dot11RetryCount++; |
e039fa4a | 1462 | if (info->status.retry_count > 1) |
f0706e82 JB |
1463 | local->dot11MultipleRetryCount++; |
1464 | } | |
1465 | ||
1466 | /* This counter shall be incremented for an acknowledged MPDU | |
1467 | * with an individual address in the address 1 field or an MPDU | |
1468 | * with a multicast address in the address 1 field of type Data | |
1469 | * or Management. */ | |
1470 | if (!is_multicast_ether_addr(hdr->addr1) || | |
1471 | type == IEEE80211_FTYPE_DATA || | |
1472 | type == IEEE80211_FTYPE_MGMT) | |
1473 | local->dot11TransmittedFragmentCount++; | |
1474 | } else { | |
1475 | if (frag == 0) | |
1476 | local->dot11FailedCount++; | |
1477 | } | |
1478 | ||
b306f453 JB |
1479 | /* this was a transmitted frame, but now we want to reuse it */ |
1480 | skb_orphan(skb); | |
1481 | ||
3d30d949 MW |
1482 | /* |
1483 | * This is a bit racy but we can avoid a lot of work | |
1484 | * with this test... | |
1485 | */ | |
1486 | if (!local->monitors && !local->cooked_mntrs) { | |
f0706e82 JB |
1487 | dev_kfree_skb(skb); |
1488 | return; | |
1489 | } | |
1490 | ||
b306f453 | 1491 | /* send frame to monitor interfaces now */ |
f0706e82 | 1492 | |
b306f453 JB |
1493 | if (skb_headroom(skb) < sizeof(*rthdr)) { |
1494 | printk(KERN_ERR "ieee80211_tx_status: headroom too small\n"); | |
f0706e82 JB |
1495 | dev_kfree_skb(skb); |
1496 | return; | |
1497 | } | |
f0706e82 | 1498 | |
988c0f72 | 1499 | rthdr = (struct ieee80211_tx_status_rtap_hdr *) |
b306f453 JB |
1500 | skb_push(skb, sizeof(*rthdr)); |
1501 | ||
1502 | memset(rthdr, 0, sizeof(*rthdr)); | |
1503 | rthdr->hdr.it_len = cpu_to_le16(sizeof(*rthdr)); | |
1504 | rthdr->hdr.it_present = | |
1505 | cpu_to_le32((1 << IEEE80211_RADIOTAP_TX_FLAGS) | | |
1506 | (1 << IEEE80211_RADIOTAP_DATA_RETRIES)); | |
1507 | ||
e039fa4a | 1508 | if (!(info->flags & IEEE80211_TX_STAT_ACK) && |
b306f453 JB |
1509 | !is_multicast_ether_addr(hdr->addr1)) |
1510 | rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_FAIL); | |
1511 | ||
e039fa4a JB |
1512 | if ((info->flags & IEEE80211_TX_CTL_USE_RTS_CTS) && |
1513 | (info->flags & IEEE80211_TX_CTL_USE_CTS_PROTECT)) | |
b306f453 | 1514 | rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_CTS); |
e039fa4a | 1515 | else if (info->flags & IEEE80211_TX_CTL_USE_RTS_CTS) |
b306f453 JB |
1516 | rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_RTS); |
1517 | ||
e039fa4a | 1518 | rthdr->data_retries = info->status.retry_count; |
b306f453 | 1519 | |
3d30d949 MW |
1520 | /* XXX: is this sufficient for BPF? */ |
1521 | skb_set_mac_header(skb, 0); | |
1522 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
1523 | skb->pkt_type = PACKET_OTHERHOST; | |
1524 | skb->protocol = htons(ETH_P_802_2); | |
1525 | memset(skb->cb, 0, sizeof(skb->cb)); | |
1526 | ||
79010420 | 1527 | rcu_read_lock(); |
79010420 | 1528 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { |
51fb61e7 | 1529 | if (sdata->vif.type == IEEE80211_IF_TYPE_MNTR) { |
b306f453 JB |
1530 | if (!netif_running(sdata->dev)) |
1531 | continue; | |
3d30d949 MW |
1532 | |
1533 | if (prev_dev) { | |
79010420 | 1534 | skb2 = skb_clone(skb, GFP_ATOMIC); |
3d30d949 MW |
1535 | if (skb2) { |
1536 | skb2->dev = prev_dev; | |
1537 | netif_rx(skb2); | |
1538 | } | |
1539 | } | |
1540 | ||
1541 | prev_dev = sdata->dev; | |
b306f453 JB |
1542 | } |
1543 | } | |
3d30d949 MW |
1544 | if (prev_dev) { |
1545 | skb->dev = prev_dev; | |
1546 | netif_rx(skb); | |
1547 | skb = NULL; | |
1548 | } | |
79010420 | 1549 | rcu_read_unlock(); |
3d30d949 | 1550 | dev_kfree_skb(skb); |
f0706e82 JB |
1551 | } |
1552 | EXPORT_SYMBOL(ieee80211_tx_status); | |
1553 | ||
f0706e82 JB |
1554 | struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len, |
1555 | const struct ieee80211_ops *ops) | |
1556 | { | |
f0706e82 | 1557 | struct ieee80211_local *local; |
f0706e82 JB |
1558 | int priv_size; |
1559 | struct wiphy *wiphy; | |
1560 | ||
1561 | /* Ensure 32-byte alignment of our private data and hw private data. | |
1562 | * We use the wiphy priv data for both our ieee80211_local and for | |
1563 | * the driver's private data | |
1564 | * | |
1565 | * In memory it'll be like this: | |
1566 | * | |
1567 | * +-------------------------+ | |
1568 | * | struct wiphy | | |
1569 | * +-------------------------+ | |
1570 | * | struct ieee80211_local | | |
1571 | * +-------------------------+ | |
1572 | * | driver's private data | | |
1573 | * +-------------------------+ | |
1574 | * | |
1575 | */ | |
1576 | priv_size = ((sizeof(struct ieee80211_local) + | |
1577 | NETDEV_ALIGN_CONST) & ~NETDEV_ALIGN_CONST) + | |
1578 | priv_data_len; | |
1579 | ||
1580 | wiphy = wiphy_new(&mac80211_config_ops, priv_size); | |
1581 | ||
1582 | if (!wiphy) | |
1583 | return NULL; | |
1584 | ||
1585 | wiphy->privid = mac80211_wiphy_privid; | |
1586 | ||
1587 | local = wiphy_priv(wiphy); | |
1588 | local->hw.wiphy = wiphy; | |
1589 | ||
1590 | local->hw.priv = (char *)local + | |
1591 | ((sizeof(struct ieee80211_local) + | |
1592 | NETDEV_ALIGN_CONST) & ~NETDEV_ALIGN_CONST); | |
1593 | ||
4480f15c | 1594 | BUG_ON(!ops->tx); |
4150c572 JB |
1595 | BUG_ON(!ops->start); |
1596 | BUG_ON(!ops->stop); | |
4480f15c JB |
1597 | BUG_ON(!ops->config); |
1598 | BUG_ON(!ops->add_interface); | |
4150c572 JB |
1599 | BUG_ON(!ops->remove_interface); |
1600 | BUG_ON(!ops->configure_filter); | |
f0706e82 JB |
1601 | local->ops = ops; |
1602 | ||
f0706e82 JB |
1603 | local->hw.queues = 1; /* default */ |
1604 | ||
f0706e82 JB |
1605 | local->bridge_packets = 1; |
1606 | ||
1607 | local->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD; | |
1608 | local->fragmentation_threshold = IEEE80211_MAX_FRAG_THRESHOLD; | |
1609 | local->short_retry_limit = 7; | |
1610 | local->long_retry_limit = 4; | |
1611 | local->hw.conf.radio_enabled = 1; | |
f0706e82 | 1612 | |
79010420 | 1613 | INIT_LIST_HEAD(&local->interfaces); |
f0706e82 | 1614 | |
b16bd15c JB |
1615 | spin_lock_init(&local->key_lock); |
1616 | ||
f0706e82 | 1617 | INIT_DELAYED_WORK(&local->scan_work, ieee80211_sta_scan_work); |
f0706e82 JB |
1618 | |
1619 | sta_info_init(local); | |
1620 | ||
f0706e82 JB |
1621 | tasklet_init(&local->tx_pending_tasklet, ieee80211_tx_pending, |
1622 | (unsigned long)local); | |
1623 | tasklet_disable(&local->tx_pending_tasklet); | |
1624 | ||
1625 | tasklet_init(&local->tasklet, | |
1626 | ieee80211_tasklet_handler, | |
1627 | (unsigned long) local); | |
1628 | tasklet_disable(&local->tasklet); | |
1629 | ||
1630 | skb_queue_head_init(&local->skb_queue); | |
1631 | skb_queue_head_init(&local->skb_queue_unreliable); | |
1632 | ||
1633 | return local_to_hw(local); | |
1634 | } | |
1635 | EXPORT_SYMBOL(ieee80211_alloc_hw); | |
1636 | ||
1637 | int ieee80211_register_hw(struct ieee80211_hw *hw) | |
1638 | { | |
1639 | struct ieee80211_local *local = hw_to_local(hw); | |
1640 | const char *name; | |
1641 | int result; | |
8318d78a | 1642 | enum ieee80211_band band; |
96d51056 | 1643 | struct net_device *mdev; |
3e122be0 | 1644 | struct wireless_dev *mwdev; |
8318d78a JB |
1645 | |
1646 | /* | |
1647 | * generic code guarantees at least one band, | |
1648 | * set this very early because much code assumes | |
1649 | * that hw.conf.channel is assigned | |
1650 | */ | |
1651 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { | |
1652 | struct ieee80211_supported_band *sband; | |
1653 | ||
1654 | sband = local->hw.wiphy->bands[band]; | |
1655 | if (sband) { | |
1656 | /* init channel we're on */ | |
1657 | local->hw.conf.channel = | |
1658 | local->oper_channel = | |
1659 | local->scan_channel = &sband->channels[0]; | |
1660 | break; | |
1661 | } | |
1662 | } | |
f0706e82 JB |
1663 | |
1664 | result = wiphy_register(local->hw.wiphy); | |
1665 | if (result < 0) | |
1666 | return result; | |
1667 | ||
e2530083 JB |
1668 | /* |
1669 | * We use the number of queues for feature tests (QoS, HT) internally | |
1670 | * so restrict them appropriately. | |
1671 | */ | |
1672 | #ifdef CONFIG_MAC80211_QOS | |
1673 | if (hw->queues > IEEE80211_MAX_QUEUES) | |
1674 | hw->queues = IEEE80211_MAX_QUEUES; | |
1675 | if (hw->ampdu_queues > IEEE80211_MAX_AMPDU_QUEUES) | |
1676 | hw->ampdu_queues = IEEE80211_MAX_AMPDU_QUEUES; | |
1677 | if (hw->queues < 4) | |
1678 | hw->ampdu_queues = 0; | |
1679 | #else | |
1680 | hw->queues = 1; | |
1681 | hw->ampdu_queues = 0; | |
1682 | #endif | |
1683 | ||
3e122be0 | 1684 | mdev = alloc_netdev_mq(sizeof(struct wireless_dev), |
e2530083 JB |
1685 | "wmaster%d", ether_setup, |
1686 | ieee80211_num_queues(hw)); | |
96d51056 JB |
1687 | if (!mdev) |
1688 | goto fail_mdev_alloc; | |
1689 | ||
e2530083 JB |
1690 | if (ieee80211_num_queues(hw) > 1) |
1691 | mdev->features |= NETIF_F_MULTI_QUEUE; | |
1692 | ||
3e122be0 JB |
1693 | mwdev = netdev_priv(mdev); |
1694 | mdev->ieee80211_ptr = mwdev; | |
1695 | mwdev->wiphy = local->hw.wiphy; | |
96d51056 JB |
1696 | |
1697 | local->mdev = mdev; | |
1698 | ||
3e122be0 | 1699 | ieee80211_rx_bss_list_init(local); |
96d51056 JB |
1700 | |
1701 | mdev->hard_start_xmit = ieee80211_master_start_xmit; | |
1702 | mdev->open = ieee80211_master_open; | |
1703 | mdev->stop = ieee80211_master_stop; | |
1704 | mdev->type = ARPHRD_IEEE80211; | |
1705 | mdev->header_ops = &ieee80211_header_ops; | |
1706 | mdev->set_multicast_list = ieee80211_master_set_multicast_list; | |
1707 | ||
f0706e82 | 1708 | name = wiphy_dev(local->hw.wiphy)->driver->name; |
59959a61 | 1709 | local->hw.workqueue = create_freezeable_workqueue(name); |
f0706e82 JB |
1710 | if (!local->hw.workqueue) { |
1711 | result = -ENOMEM; | |
1712 | goto fail_workqueue; | |
1713 | } | |
1714 | ||
b306f453 JB |
1715 | /* |
1716 | * The hardware needs headroom for sending the frame, | |
1717 | * and we need some headroom for passing the frame to monitor | |
1718 | * interfaces, but never both at the same time. | |
1719 | */ | |
33ccad35 JB |
1720 | local->tx_headroom = max_t(unsigned int , local->hw.extra_tx_headroom, |
1721 | sizeof(struct ieee80211_tx_status_rtap_hdr)); | |
b306f453 | 1722 | |
e9f207f0 JB |
1723 | debugfs_hw_add(local); |
1724 | ||
dc0ae30c TW |
1725 | if (local->hw.conf.beacon_int < 10) |
1726 | local->hw.conf.beacon_int = 100; | |
f0706e82 | 1727 | |
566bfe5a BR |
1728 | local->wstats_flags |= local->hw.flags & (IEEE80211_HW_SIGNAL_UNSPEC | |
1729 | IEEE80211_HW_SIGNAL_DB | | |
1730 | IEEE80211_HW_SIGNAL_DBM) ? | |
f0706e82 | 1731 | IW_QUAL_QUAL_UPDATED : IW_QUAL_QUAL_INVALID; |
566bfe5a | 1732 | local->wstats_flags |= local->hw.flags & IEEE80211_HW_NOISE_DBM ? |
f0706e82 | 1733 | IW_QUAL_NOISE_UPDATED : IW_QUAL_NOISE_INVALID; |
566bfe5a | 1734 | if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM) |
f0706e82 JB |
1735 | local->wstats_flags |= IW_QUAL_DBM; |
1736 | ||
1737 | result = sta_info_start(local); | |
1738 | if (result < 0) | |
1739 | goto fail_sta_info; | |
1740 | ||
1741 | rtnl_lock(); | |
1742 | result = dev_alloc_name(local->mdev, local->mdev->name); | |
1743 | if (result < 0) | |
1744 | goto fail_dev; | |
1745 | ||
1746 | memcpy(local->mdev->dev_addr, local->hw.wiphy->perm_addr, ETH_ALEN); | |
1747 | SET_NETDEV_DEV(local->mdev, wiphy_dev(local->hw.wiphy)); | |
1748 | ||
1749 | result = register_netdevice(local->mdev); | |
1750 | if (result < 0) | |
1751 | goto fail_dev; | |
1752 | ||
830f9038 JB |
1753 | result = ieee80211_init_rate_ctrl_alg(local, |
1754 | hw->rate_control_algorithm); | |
f0706e82 JB |
1755 | if (result < 0) { |
1756 | printk(KERN_DEBUG "%s: Failed to initialize rate control " | |
dd1cd4c6 | 1757 | "algorithm\n", wiphy_name(local->hw.wiphy)); |
f0706e82 JB |
1758 | goto fail_rate; |
1759 | } | |
1760 | ||
1761 | result = ieee80211_wep_init(local); | |
1762 | ||
1763 | if (result < 0) { | |
1764 | printk(KERN_DEBUG "%s: Failed to initialize wep\n", | |
dd1cd4c6 | 1765 | wiphy_name(local->hw.wiphy)); |
f0706e82 JB |
1766 | goto fail_wep; |
1767 | } | |
1768 | ||
1769 | ieee80211_install_qdisc(local->mdev); | |
1770 | ||
1771 | /* add one default STA interface */ | |
3e122be0 | 1772 | result = ieee80211_if_add(local, "wlan%d", NULL, |
ee385855 | 1773 | IEEE80211_IF_TYPE_STA, NULL); |
f0706e82 JB |
1774 | if (result) |
1775 | printk(KERN_WARNING "%s: Failed to add default virtual iface\n", | |
dd1cd4c6 | 1776 | wiphy_name(local->hw.wiphy)); |
f0706e82 | 1777 | |
f0706e82 JB |
1778 | rtnl_unlock(); |
1779 | ||
1780 | ieee80211_led_init(local); | |
1781 | ||
1782 | return 0; | |
1783 | ||
1784 | fail_wep: | |
1785 | rate_control_deinitialize(local); | |
1786 | fail_rate: | |
1787 | unregister_netdevice(local->mdev); | |
339a7c41 | 1788 | local->mdev = NULL; |
f0706e82 JB |
1789 | fail_dev: |
1790 | rtnl_unlock(); | |
1791 | sta_info_stop(local); | |
1792 | fail_sta_info: | |
e9f207f0 | 1793 | debugfs_hw_del(local); |
f0706e82 JB |
1794 | destroy_workqueue(local->hw.workqueue); |
1795 | fail_workqueue: | |
3e122be0 JB |
1796 | if (local->mdev) |
1797 | free_netdev(local->mdev); | |
96d51056 | 1798 | fail_mdev_alloc: |
f0706e82 JB |
1799 | wiphy_unregister(local->hw.wiphy); |
1800 | return result; | |
1801 | } | |
1802 | EXPORT_SYMBOL(ieee80211_register_hw); | |
1803 | ||
f0706e82 JB |
1804 | void ieee80211_unregister_hw(struct ieee80211_hw *hw) |
1805 | { | |
1806 | struct ieee80211_local *local = hw_to_local(hw); | |
f0706e82 JB |
1807 | |
1808 | tasklet_kill(&local->tx_pending_tasklet); | |
1809 | tasklet_kill(&local->tasklet); | |
1810 | ||
1811 | rtnl_lock(); | |
1812 | ||
79010420 JB |
1813 | /* |
1814 | * At this point, interface list manipulations are fine | |
1815 | * because the driver cannot be handing us frames any | |
1816 | * more and the tasklet is killed. | |
1817 | */ | |
5b2812e9 | 1818 | |
75636525 JB |
1819 | /* First, we remove all virtual interfaces. */ |
1820 | ieee80211_remove_interfaces(local); | |
5b2812e9 JB |
1821 | |
1822 | /* then, finally, remove the master interface */ | |
3e122be0 | 1823 | unregister_netdevice(local->mdev); |
f0706e82 JB |
1824 | |
1825 | rtnl_unlock(); | |
1826 | ||
3e122be0 | 1827 | ieee80211_rx_bss_list_deinit(local); |
f0706e82 JB |
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); | |
3e122be0 | 1844 | free_netdev(local->mdev); |
f0706e82 JB |
1845 | } |
1846 | EXPORT_SYMBOL(ieee80211_unregister_hw); | |
1847 | ||
1848 | void ieee80211_free_hw(struct ieee80211_hw *hw) | |
1849 | { | |
1850 | struct ieee80211_local *local = hw_to_local(hw); | |
1851 | ||
f0706e82 JB |
1852 | wiphy_free(local->hw.wiphy); |
1853 | } | |
1854 | EXPORT_SYMBOL(ieee80211_free_hw); | |
1855 | ||
f0706e82 JB |
1856 | static int __init ieee80211_init(void) |
1857 | { | |
1858 | struct sk_buff *skb; | |
1859 | int ret; | |
1860 | ||
e039fa4a JB |
1861 | BUILD_BUG_ON(sizeof(struct ieee80211_tx_info) > sizeof(skb->cb)); |
1862 | BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, driver_data) + | |
1863 | IEEE80211_TX_INFO_DRIVER_DATA_SIZE > sizeof(skb->cb)); | |
f0706e82 | 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"); |