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 | ||
51cb6db0 | 117 | netif_tx_start_all_queues(local->mdev); |
36d6825b JB |
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; |
bdbe8195 | 190 | u8 null_addr[ETH_ALEN] = {0}; |
f0706e82 | 191 | |
b2c258fb | 192 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
0ec3ca44 | 193 | |
bdbe8195 LCC |
194 | /* fail early if user set an invalid address */ |
195 | if (compare_ether_addr(dev->dev_addr, null_addr) && | |
196 | !is_valid_ether_addr(dev->dev_addr)) | |
197 | return -EADDRNOTAVAIL; | |
198 | ||
79010420 JB |
199 | /* we hold the RTNL here so can safely walk the list */ |
200 | list_for_each_entry(nsdata, &local->interfaces, list) { | |
b2c258fb | 201 | struct net_device *ndev = nsdata->dev; |
e2ebc74d | 202 | |
3e122be0 | 203 | if (ndev != dev && netif_running(ndev)) { |
665e8aaf JB |
204 | /* |
205 | * Allow only a single IBSS interface to be up at any | |
206 | * time. This is restricted because beacon distribution | |
207 | * cannot work properly if both are in the same IBSS. | |
208 | * | |
209 | * To remove this restriction we'd have to disallow them | |
210 | * from setting the same SSID on different IBSS interfaces | |
211 | * belonging to the same hardware. Then, however, we're | |
212 | * faced with having to adopt two different TSF timers... | |
213 | */ | |
214 | if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS && | |
215 | nsdata->vif.type == IEEE80211_IF_TYPE_IBSS) | |
216 | return -EBUSY; | |
217 | ||
665e8aaf JB |
218 | /* |
219 | * The remaining checks are only performed for interfaces | |
220 | * with the same MAC address. | |
221 | */ | |
222 | if (compare_ether_addr(dev->dev_addr, ndev->dev_addr)) | |
223 | continue; | |
224 | ||
0ec3ca44 JB |
225 | /* |
226 | * check whether it may have the same address | |
227 | */ | |
51fb61e7 JB |
228 | if (!identical_mac_addr_allowed(sdata->vif.type, |
229 | nsdata->vif.type)) | |
0ec3ca44 | 230 | return -ENOTUNIQ; |
0ec3ca44 JB |
231 | |
232 | /* | |
233 | * can only add VLANs to enabled APs | |
234 | */ | |
51fb61e7 | 235 | if (sdata->vif.type == IEEE80211_IF_TYPE_VLAN && |
665e8aaf | 236 | nsdata->vif.type == IEEE80211_IF_TYPE_AP) |
3e122be0 | 237 | sdata->bss = &nsdata->u.ap; |
b2c258fb JB |
238 | } |
239 | } | |
f0706e82 | 240 | |
51fb61e7 | 241 | switch (sdata->vif.type) { |
0ec3ca44 | 242 | case IEEE80211_IF_TYPE_WDS: |
e94e1068 | 243 | if (!is_valid_ether_addr(sdata->u.wds.remote_addr)) |
0ec3ca44 JB |
244 | return -ENOLINK; |
245 | break; | |
246 | case IEEE80211_IF_TYPE_VLAN: | |
3e122be0 | 247 | if (!sdata->bss) |
0ec3ca44 | 248 | return -ENOLINK; |
3e122be0 | 249 | list_add(&sdata->u.vlan.list, &sdata->bss->vlans); |
0ec3ca44 | 250 | break; |
fb1c1cd6 | 251 | case IEEE80211_IF_TYPE_AP: |
3e122be0 JB |
252 | sdata->bss = &sdata->u.ap; |
253 | break; | |
8dbc1722 LCC |
254 | case IEEE80211_IF_TYPE_MESH_POINT: |
255 | /* mesh ifaces must set allmulti to forward mcast traffic */ | |
256 | atomic_inc(&local->iff_allmultis); | |
257 | break; | |
fb1c1cd6 JB |
258 | case IEEE80211_IF_TYPE_STA: |
259 | case IEEE80211_IF_TYPE_MNTR: | |
260 | case IEEE80211_IF_TYPE_IBSS: | |
261 | /* no special treatment */ | |
262 | break; | |
a2897552 JB |
263 | case IEEE80211_IF_TYPE_INVALID: |
264 | /* cannot happen */ | |
265 | WARN_ON(1); | |
266 | break; | |
0ec3ca44 | 267 | } |
f0706e82 | 268 | |
b2c258fb JB |
269 | if (local->open_count == 0) { |
270 | res = 0; | |
4150c572 JB |
271 | if (local->ops->start) |
272 | res = local->ops->start(local_to_hw(local)); | |
273 | if (res) | |
3e122be0 | 274 | goto err_del_bss; |
ceffefd1 | 275 | need_hw_reconfig = 1; |
cdcb006f | 276 | ieee80211_led_radio(local, local->hw.conf.radio_enabled); |
b2c258fb | 277 | } |
f0706e82 | 278 | |
bdbe8195 LCC |
279 | /* |
280 | * Check all interfaces and copy the hopefully now-present | |
281 | * MAC address to those that have the special null one. | |
282 | */ | |
283 | list_for_each_entry(nsdata, &local->interfaces, list) { | |
284 | struct net_device *ndev = nsdata->dev; | |
285 | ||
286 | /* | |
287 | * No need to check netif_running since we do not allow | |
288 | * it to start up with this invalid address. | |
289 | */ | |
290 | if (compare_ether_addr(null_addr, ndev->dev_addr) == 0) | |
291 | memcpy(ndev->dev_addr, | |
292 | local->hw.wiphy->perm_addr, | |
293 | ETH_ALEN); | |
294 | } | |
295 | ||
296 | if (compare_ether_addr(null_addr, local->mdev->dev_addr) == 0) | |
297 | memcpy(local->mdev->dev_addr, local->hw.wiphy->perm_addr, | |
298 | ETH_ALEN); | |
299 | ||
300 | /* | |
301 | * Validate the MAC address for this device. | |
302 | */ | |
303 | if (!is_valid_ether_addr(dev->dev_addr)) { | |
304 | if (!local->open_count && local->ops->stop) | |
305 | local->ops->stop(local_to_hw(local)); | |
306 | return -EADDRNOTAVAIL; | |
307 | } | |
308 | ||
51fb61e7 | 309 | switch (sdata->vif.type) { |
0ec3ca44 | 310 | case IEEE80211_IF_TYPE_VLAN: |
0ec3ca44 JB |
311 | /* no need to tell driver */ |
312 | break; | |
4150c572 | 313 | case IEEE80211_IF_TYPE_MNTR: |
3d30d949 MW |
314 | if (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES) { |
315 | local->cooked_mntrs++; | |
316 | break; | |
317 | } | |
318 | ||
4150c572 | 319 | /* must be before the call to ieee80211_configure_filter */ |
b2c258fb | 320 | local->monitors++; |
8cc9a739 | 321 | if (local->monitors == 1) |
4150c572 | 322 | local->hw.conf.flags |= IEEE80211_CONF_RADIOTAP; |
8cc9a739 MW |
323 | |
324 | if (sdata->u.mntr_flags & MONITOR_FLAG_FCSFAIL) | |
325 | local->fif_fcsfail++; | |
326 | if (sdata->u.mntr_flags & MONITOR_FLAG_PLCPFAIL) | |
327 | local->fif_plcpfail++; | |
328 | if (sdata->u.mntr_flags & MONITOR_FLAG_CONTROL) | |
329 | local->fif_control++; | |
330 | if (sdata->u.mntr_flags & MONITOR_FLAG_OTHER_BSS) | |
331 | local->fif_other_bss++; | |
332 | ||
b9e40857 | 333 | netif_addr_lock_bh(local->mdev); |
8cc9a739 | 334 | ieee80211_configure_filter(local); |
b9e40857 | 335 | netif_addr_unlock_bh(local->mdev); |
4150c572 JB |
336 | break; |
337 | case IEEE80211_IF_TYPE_STA: | |
338 | case IEEE80211_IF_TYPE_IBSS: | |
339 | sdata->u.sta.flags &= ~IEEE80211_STA_PREV_BSSID_SET; | |
340 | /* fall through */ | |
341 | default: | |
32bfd35d | 342 | conf.vif = &sdata->vif; |
51fb61e7 | 343 | conf.type = sdata->vif.type; |
4150c572 JB |
344 | conf.mac_addr = dev->dev_addr; |
345 | res = local->ops->add_interface(local_to_hw(local), &conf); | |
4150c572 | 346 | if (res) |
636c5d48 | 347 | goto err_stop; |
4150c572 | 348 | |
9d139c81 JB |
349 | if (ieee80211_vif_is_mesh(&sdata->vif)) |
350 | ieee80211_start_mesh(sdata->dev); | |
fc32f924 TW |
351 | changed |= ieee80211_reset_erp_info(dev); |
352 | ieee80211_bss_info_change_notify(sdata, changed); | |
11a843b7 | 353 | ieee80211_enable_keys(sdata); |
4150c572 | 354 | |
51fb61e7 | 355 | if (sdata->vif.type == IEEE80211_IF_TYPE_STA && |
ddd3d2be | 356 | !(sdata->flags & IEEE80211_SDATA_USERSPACE_MLME)) |
4150c572 JB |
357 | netif_carrier_off(dev); |
358 | else | |
359 | netif_carrier_on(dev); | |
d9430a32 | 360 | } |
f0706e82 | 361 | |
636c5d48 JB |
362 | if (sdata->vif.type == IEEE80211_IF_TYPE_WDS) { |
363 | /* Create STA entry for the WDS peer */ | |
364 | sta = sta_info_alloc(sdata, sdata->u.wds.remote_addr, | |
365 | GFP_KERNEL); | |
366 | if (!sta) { | |
367 | res = -ENOMEM; | |
368 | goto err_del_interface; | |
369 | } | |
370 | ||
07346f81 | 371 | /* no locking required since STA is not live yet */ |
636c5d48 JB |
372 | sta->flags |= WLAN_STA_AUTHORIZED; |
373 | ||
374 | res = sta_info_insert(sta); | |
375 | if (res) { | |
376 | /* STA has been freed */ | |
377 | goto err_del_interface; | |
378 | } | |
379 | } | |
380 | ||
4150c572 JB |
381 | if (local->open_count == 0) { |
382 | res = dev_open(local->mdev); | |
383 | WARN_ON(res); | |
636c5d48 JB |
384 | if (res) |
385 | goto err_del_interface; | |
4150c572 JB |
386 | tasklet_enable(&local->tx_pending_tasklet); |
387 | tasklet_enable(&local->tasklet); | |
388 | } | |
389 | ||
c1428b3f JB |
390 | /* |
391 | * set_multicast_list will be invoked by the networking core | |
392 | * which will check whether any increments here were done in | |
393 | * error and sync them down to the hardware as filter flags. | |
394 | */ | |
395 | if (sdata->flags & IEEE80211_SDATA_ALLMULTI) | |
396 | atomic_inc(&local->iff_allmultis); | |
397 | ||
398 | if (sdata->flags & IEEE80211_SDATA_PROMISC) | |
399 | atomic_inc(&local->iff_promiscs); | |
400 | ||
4150c572 | 401 | local->open_count++; |
ceffefd1 MB |
402 | if (need_hw_reconfig) |
403 | ieee80211_hw_config(local); | |
f0706e82 | 404 | |
64f851e4 JN |
405 | /* |
406 | * ieee80211_sta_work is disabled while network interface | |
407 | * is down. Therefore, some configuration changes may not | |
408 | * yet be effective. Trigger execution of ieee80211_sta_work | |
409 | * to fix this. | |
410 | */ | |
988c0f72 JB |
411 | if (sdata->vif.type == IEEE80211_IF_TYPE_STA || |
412 | sdata->vif.type == IEEE80211_IF_TYPE_IBSS) { | |
64f851e4 JN |
413 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; |
414 | queue_work(local->hw.workqueue, &ifsta->work); | |
415 | } | |
416 | ||
51cb6db0 | 417 | netif_tx_start_all_queues(dev); |
4150c572 | 418 | |
b2c258fb | 419 | return 0; |
636c5d48 JB |
420 | err_del_interface: |
421 | local->ops->remove_interface(local_to_hw(local), &conf); | |
422 | err_stop: | |
423 | if (!local->open_count && local->ops->stop) | |
424 | local->ops->stop(local_to_hw(local)); | |
3e122be0 JB |
425 | err_del_bss: |
426 | sdata->bss = NULL; | |
427 | if (sdata->vif.type == IEEE80211_IF_TYPE_VLAN) | |
428 | list_del(&sdata->u.vlan.list); | |
636c5d48 | 429 | return res; |
f0706e82 | 430 | } |
f0706e82 | 431 | |
4150c572 | 432 | static int ieee80211_stop(struct net_device *dev) |
f0706e82 | 433 | { |
44213b5e JB |
434 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
435 | struct ieee80211_local *local = sdata->local; | |
4150c572 | 436 | struct ieee80211_if_init_conf conf; |
07db2183 | 437 | struct sta_info *sta; |
4150c572 | 438 | |
44213b5e JB |
439 | /* |
440 | * Stop TX on this interface first. | |
441 | */ | |
51cb6db0 | 442 | netif_tx_stop_all_queues(dev); |
4150c572 | 443 | |
44213b5e JB |
444 | /* |
445 | * Now delete all active aggregation sessions. | |
446 | */ | |
d0709a65 JB |
447 | rcu_read_lock(); |
448 | ||
449 | list_for_each_entry_rcu(sta, &local->sta_list, list) { | |
450 | if (sta->sdata == sdata) | |
85249e5f | 451 | ieee80211_sta_tear_down_BA_sessions(dev, sta->addr); |
07db2183 RR |
452 | } |
453 | ||
d0709a65 JB |
454 | rcu_read_unlock(); |
455 | ||
44213b5e JB |
456 | /* |
457 | * Remove all stations associated with this interface. | |
458 | * | |
459 | * This must be done before calling ops->remove_interface() | |
460 | * because otherwise we can later invoke ops->sta_notify() | |
461 | * whenever the STAs are removed, and that invalidates driver | |
462 | * assumptions about always getting a vif pointer that is valid | |
463 | * (because if we remove a STA after ops->remove_interface() | |
464 | * the driver will have removed the vif info already!) | |
465 | * | |
466 | * We could relax this and only unlink the stations from the | |
467 | * hash table and list but keep them on a per-sdata list that | |
468 | * will be inserted back again when the interface is brought | |
469 | * up again, but I don't currently see a use case for that, | |
470 | * except with WDS which gets a STA entry created when it is | |
471 | * brought up. | |
472 | */ | |
473 | sta_info_flush(local, sdata); | |
4150c572 | 474 | |
c1428b3f JB |
475 | /* |
476 | * Don't count this interface for promisc/allmulti while it | |
477 | * is down. dev_mc_unsync() will invoke set_multicast_list | |
478 | * on the master interface which will sync these down to the | |
479 | * hardware as filter flags. | |
480 | */ | |
481 | if (sdata->flags & IEEE80211_SDATA_ALLMULTI) | |
482 | atomic_dec(&local->iff_allmultis); | |
483 | ||
484 | if (sdata->flags & IEEE80211_SDATA_PROMISC) | |
485 | atomic_dec(&local->iff_promiscs); | |
486 | ||
4150c572 JB |
487 | dev_mc_unsync(local->mdev, dev); |
488 | ||
5dfdaf58 | 489 | /* APs need special treatment */ |
51fb61e7 | 490 | if (sdata->vif.type == IEEE80211_IF_TYPE_AP) { |
0ec3ca44 | 491 | struct ieee80211_sub_if_data *vlan, *tmp; |
5dfdaf58 | 492 | struct beacon_data *old_beacon = sdata->u.ap.beacon; |
0ec3ca44 | 493 | |
5dfdaf58 JB |
494 | /* remove beacon */ |
495 | rcu_assign_pointer(sdata->u.ap.beacon, NULL); | |
496 | synchronize_rcu(); | |
497 | kfree(old_beacon); | |
498 | ||
499 | /* down all dependent devices, that is VLANs */ | |
0ec3ca44 JB |
500 | list_for_each_entry_safe(vlan, tmp, &sdata->u.ap.vlans, |
501 | u.vlan.list) | |
502 | dev_close(vlan->dev); | |
503 | WARN_ON(!list_empty(&sdata->u.ap.vlans)); | |
504 | } | |
505 | ||
4150c572 | 506 | local->open_count--; |
f0706e82 | 507 | |
51fb61e7 | 508 | switch (sdata->vif.type) { |
0ec3ca44 JB |
509 | case IEEE80211_IF_TYPE_VLAN: |
510 | list_del(&sdata->u.vlan.list); | |
0ec3ca44 JB |
511 | /* no need to tell driver */ |
512 | break; | |
4150c572 | 513 | case IEEE80211_IF_TYPE_MNTR: |
3d30d949 MW |
514 | if (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES) { |
515 | local->cooked_mntrs--; | |
516 | break; | |
517 | } | |
518 | ||
4150c572 | 519 | local->monitors--; |
8cc9a739 | 520 | if (local->monitors == 0) |
8b393f1d | 521 | local->hw.conf.flags &= ~IEEE80211_CONF_RADIOTAP; |
8cc9a739 MW |
522 | |
523 | if (sdata->u.mntr_flags & MONITOR_FLAG_FCSFAIL) | |
524 | local->fif_fcsfail--; | |
525 | if (sdata->u.mntr_flags & MONITOR_FLAG_PLCPFAIL) | |
526 | local->fif_plcpfail--; | |
527 | if (sdata->u.mntr_flags & MONITOR_FLAG_CONTROL) | |
528 | local->fif_control--; | |
529 | if (sdata->u.mntr_flags & MONITOR_FLAG_OTHER_BSS) | |
530 | local->fif_other_bss--; | |
531 | ||
b9e40857 | 532 | netif_addr_lock_bh(local->mdev); |
8cc9a739 | 533 | ieee80211_configure_filter(local); |
b9e40857 | 534 | netif_addr_unlock_bh(local->mdev); |
4150c572 | 535 | break; |
f7a92144 | 536 | case IEEE80211_IF_TYPE_MESH_POINT: |
8dbc1722 LCC |
537 | /* allmulti is always set on mesh ifaces */ |
538 | atomic_dec(&local->iff_allmultis); | |
539 | /* fall through */ | |
b2c258fb JB |
540 | case IEEE80211_IF_TYPE_STA: |
541 | case IEEE80211_IF_TYPE_IBSS: | |
542 | sdata->u.sta.state = IEEE80211_DISABLED; | |
ad81b2f9 | 543 | memset(sdata->u.sta.bssid, 0, ETH_ALEN); |
b2c258fb | 544 | del_timer_sync(&sdata->u.sta.timer); |
2a8a9a88 | 545 | /* |
79010420 JB |
546 | * When we get here, the interface is marked down. |
547 | * Call synchronize_rcu() to wait for the RX path | |
548 | * should it be using the interface and enqueuing | |
549 | * frames at this very time on another CPU. | |
2a8a9a88 | 550 | */ |
79010420 | 551 | synchronize_rcu(); |
b2c258fb | 552 | skb_queue_purge(&sdata->u.sta.skb_queue); |
2a8a9a88 | 553 | |
ece8eddd ZY |
554 | if (local->scan_dev == sdata->dev) { |
555 | if (!local->ops->hw_scan) { | |
556 | local->sta_sw_scanning = 0; | |
557 | cancel_delayed_work(&local->scan_work); | |
558 | } else | |
559 | local->sta_hw_scanning = 0; | |
b2c258fb | 560 | } |
ece8eddd | 561 | |
a10605e5 ZY |
562 | sdata->u.sta.flags &= ~IEEE80211_STA_PRIVACY_INVOKED; |
563 | kfree(sdata->u.sta.extra_ie); | |
564 | sdata->u.sta.extra_ie = NULL; | |
565 | sdata->u.sta.extra_ie_len = 0; | |
4150c572 JB |
566 | /* fall through */ |
567 | default: | |
32bfd35d | 568 | conf.vif = &sdata->vif; |
51fb61e7 | 569 | conf.type = sdata->vif.type; |
4150c572 | 570 | conf.mac_addr = dev->dev_addr; |
11a843b7 JB |
571 | /* disable all keys for as long as this netdev is down */ |
572 | ieee80211_disable_keys(sdata); | |
4150c572 | 573 | local->ops->remove_interface(local_to_hw(local), &conf); |
f0706e82 JB |
574 | } |
575 | ||
3e122be0 JB |
576 | sdata->bss = NULL; |
577 | ||
b2c258fb JB |
578 | if (local->open_count == 0) { |
579 | if (netif_running(local->mdev)) | |
580 | dev_close(local->mdev); | |
4150c572 | 581 | |
b2c258fb JB |
582 | if (local->ops->stop) |
583 | local->ops->stop(local_to_hw(local)); | |
4150c572 | 584 | |
cdcb006f ID |
585 | ieee80211_led_radio(local, 0); |
586 | ||
ea0c9253 ID |
587 | flush_workqueue(local->hw.workqueue); |
588 | ||
b2c258fb JB |
589 | tasklet_disable(&local->tx_pending_tasklet); |
590 | tasklet_disable(&local->tasklet); | |
591 | } | |
b2c258fb | 592 | |
f0706e82 JB |
593 | return 0; |
594 | } | |
595 | ||
eadc8d9e RR |
596 | int ieee80211_start_tx_ba_session(struct ieee80211_hw *hw, u8 *ra, u16 tid) |
597 | { | |
598 | struct ieee80211_local *local = hw_to_local(hw); | |
599 | struct sta_info *sta; | |
600 | struct ieee80211_sub_if_data *sdata; | |
601 | u16 start_seq_num = 0; | |
602 | u8 *state; | |
603 | int ret; | |
604 | DECLARE_MAC_BUF(mac); | |
605 | ||
606 | if (tid >= STA_TID_NUM) | |
607 | return -EINVAL; | |
608 | ||
609 | #ifdef CONFIG_MAC80211_HT_DEBUG | |
610 | printk(KERN_DEBUG "Open BA session requested for %s tid %u\n", | |
611 | print_mac(mac, ra), tid); | |
612 | #endif /* CONFIG_MAC80211_HT_DEBUG */ | |
613 | ||
d0709a65 JB |
614 | rcu_read_lock(); |
615 | ||
eadc8d9e RR |
616 | sta = sta_info_get(local, ra); |
617 | if (!sta) { | |
f4ea83dd | 618 | #ifdef CONFIG_MAC80211_HT_DEBUG |
eadc8d9e | 619 | printk(KERN_DEBUG "Could not find the station\n"); |
f4ea83dd | 620 | #endif |
b83f4e15 TW |
621 | ret = -ENOENT; |
622 | goto exit; | |
eadc8d9e RR |
623 | } |
624 | ||
07346f81 | 625 | spin_lock_bh(&sta->lock); |
eadc8d9e RR |
626 | |
627 | /* we have tried too many times, receiver does not want A-MPDU */ | |
cee24a3e | 628 | if (sta->ampdu_mlme.addba_req_num[tid] > HT_AGG_MAX_RETRIES) { |
eadc8d9e | 629 | ret = -EBUSY; |
b83f4e15 | 630 | goto err_unlock_sta; |
eadc8d9e RR |
631 | } |
632 | ||
cee24a3e | 633 | state = &sta->ampdu_mlme.tid_state_tx[tid]; |
eadc8d9e RR |
634 | /* check if the TID is not in aggregation flow already */ |
635 | if (*state != HT_AGG_STATE_IDLE) { | |
636 | #ifdef CONFIG_MAC80211_HT_DEBUG | |
637 | printk(KERN_DEBUG "BA request denied - session is not " | |
638 | "idle on tid %u\n", tid); | |
639 | #endif /* CONFIG_MAC80211_HT_DEBUG */ | |
640 | ret = -EAGAIN; | |
b83f4e15 | 641 | goto err_unlock_sta; |
eadc8d9e RR |
642 | } |
643 | ||
cee24a3e RR |
644 | /* prepare A-MPDU MLME for Tx aggregation */ |
645 | sta->ampdu_mlme.tid_tx[tid] = | |
646 | kmalloc(sizeof(struct tid_ampdu_tx), GFP_ATOMIC); | |
647 | if (!sta->ampdu_mlme.tid_tx[tid]) { | |
f4ea83dd | 648 | #ifdef CONFIG_MAC80211_HT_DEBUG |
cee24a3e RR |
649 | if (net_ratelimit()) |
650 | printk(KERN_ERR "allocate tx mlme to tid %d failed\n", | |
651 | tid); | |
f4ea83dd | 652 | #endif |
cee24a3e | 653 | ret = -ENOMEM; |
b83f4e15 | 654 | goto err_unlock_sta; |
cee24a3e RR |
655 | } |
656 | /* Tx timer */ | |
657 | sta->ampdu_mlme.tid_tx[tid]->addba_resp_timer.function = | |
658 | sta_addba_resp_timer_expired; | |
659 | sta->ampdu_mlme.tid_tx[tid]->addba_resp_timer.data = | |
660 | (unsigned long)&sta->timer_to_tid[tid]; | |
661 | init_timer(&sta->ampdu_mlme.tid_tx[tid]->addba_resp_timer); | |
662 | ||
eadc8d9e | 663 | /* create a new queue for this aggregation */ |
9e723492 | 664 | ret = ieee80211_ht_agg_queue_add(local, sta, tid); |
eadc8d9e RR |
665 | |
666 | /* case no queue is available to aggregation | |
667 | * don't switch to aggregation */ | |
668 | if (ret) { | |
669 | #ifdef CONFIG_MAC80211_HT_DEBUG | |
cee24a3e | 670 | printk(KERN_DEBUG "BA request denied - queue unavailable for" |
eadc8d9e RR |
671 | " tid %d\n", tid); |
672 | #endif /* CONFIG_MAC80211_HT_DEBUG */ | |
b83f4e15 | 673 | goto err_unlock_queue; |
eadc8d9e | 674 | } |
d0709a65 | 675 | sdata = sta->sdata; |
eadc8d9e RR |
676 | |
677 | /* Ok, the Addba frame hasn't been sent yet, but if the driver calls the | |
678 | * call back right away, it must see that the flow has begun */ | |
679 | *state |= HT_ADDBA_REQUESTED_MSK; | |
680 | ||
681 | if (local->ops->ampdu_action) | |
682 | ret = local->ops->ampdu_action(hw, IEEE80211_AMPDU_TX_START, | |
683 | ra, tid, &start_seq_num); | |
684 | ||
685 | if (ret) { | |
686 | /* No need to requeue the packets in the agg queue, since we | |
687 | * held the tx lock: no packet could be enqueued to the newly | |
688 | * allocated queue */ | |
51cb6db0 | 689 | ieee80211_ht_agg_queue_remove(local, sta, tid, 0); |
eadc8d9e | 690 | #ifdef CONFIG_MAC80211_HT_DEBUG |
cee24a3e RR |
691 | printk(KERN_DEBUG "BA request denied - HW unavailable for" |
692 | " tid %d\n", tid); | |
eadc8d9e | 693 | #endif /* CONFIG_MAC80211_HT_DEBUG */ |
eadc8d9e | 694 | *state = HT_AGG_STATE_IDLE; |
b83f4e15 | 695 | goto err_unlock_queue; |
eadc8d9e RR |
696 | } |
697 | ||
698 | /* Will put all the packets in the new SW queue */ | |
9e723492 | 699 | ieee80211_requeue(local, ieee802_1d_to_ac[tid]); |
b83f4e15 | 700 | spin_unlock_bh(&sta->lock); |
eadc8d9e | 701 | |
eadc8d9e RR |
702 | /* send an addBA request */ |
703 | sta->ampdu_mlme.dialog_token_allocator++; | |
cee24a3e | 704 | sta->ampdu_mlme.tid_tx[tid]->dialog_token = |
eadc8d9e | 705 | sta->ampdu_mlme.dialog_token_allocator; |
cee24a3e | 706 | sta->ampdu_mlme.tid_tx[tid]->ssn = start_seq_num; |
eadc8d9e | 707 | |
b83f4e15 | 708 | |
d0709a65 | 709 | ieee80211_send_addba_request(sta->sdata->dev, ra, tid, |
cee24a3e RR |
710 | sta->ampdu_mlme.tid_tx[tid]->dialog_token, |
711 | sta->ampdu_mlme.tid_tx[tid]->ssn, | |
eadc8d9e | 712 | 0x40, 5000); |
eadc8d9e | 713 | /* activate the timer for the recipient's addBA response */ |
cee24a3e | 714 | sta->ampdu_mlme.tid_tx[tid]->addba_resp_timer.expires = |
eadc8d9e | 715 | jiffies + ADDBA_RESP_INTERVAL; |
cee24a3e | 716 | add_timer(&sta->ampdu_mlme.tid_tx[tid]->addba_resp_timer); |
f4ea83dd | 717 | #ifdef CONFIG_MAC80211_HT_DEBUG |
eadc8d9e | 718 | printk(KERN_DEBUG "activated addBA response timer on tid %d\n", tid); |
f4ea83dd | 719 | #endif |
b83f4e15 | 720 | goto exit; |
eadc8d9e | 721 | |
b83f4e15 | 722 | err_unlock_queue: |
cee24a3e RR |
723 | kfree(sta->ampdu_mlme.tid_tx[tid]); |
724 | sta->ampdu_mlme.tid_tx[tid] = NULL; | |
cee24a3e | 725 | ret = -EBUSY; |
b83f4e15 | 726 | err_unlock_sta: |
07346f81 | 727 | spin_unlock_bh(&sta->lock); |
b83f4e15 | 728 | exit: |
d0709a65 | 729 | rcu_read_unlock(); |
eadc8d9e RR |
730 | return ret; |
731 | } | |
732 | EXPORT_SYMBOL(ieee80211_start_tx_ba_session); | |
733 | ||
734 | int ieee80211_stop_tx_ba_session(struct ieee80211_hw *hw, | |
735 | u8 *ra, u16 tid, | |
736 | enum ieee80211_back_parties initiator) | |
737 | { | |
738 | struct ieee80211_local *local = hw_to_local(hw); | |
739 | struct sta_info *sta; | |
740 | u8 *state; | |
741 | int ret = 0; | |
742 | DECLARE_MAC_BUF(mac); | |
743 | ||
744 | if (tid >= STA_TID_NUM) | |
745 | return -EINVAL; | |
746 | ||
d0709a65 | 747 | rcu_read_lock(); |
eadc8d9e | 748 | sta = sta_info_get(local, ra); |
d0709a65 JB |
749 | if (!sta) { |
750 | rcu_read_unlock(); | |
eadc8d9e | 751 | return -ENOENT; |
d0709a65 | 752 | } |
eadc8d9e RR |
753 | |
754 | /* check if the TID is in aggregation */ | |
cee24a3e | 755 | state = &sta->ampdu_mlme.tid_state_tx[tid]; |
07346f81 | 756 | spin_lock_bh(&sta->lock); |
eadc8d9e RR |
757 | |
758 | if (*state != HT_AGG_STATE_OPERATIONAL) { | |
eadc8d9e RR |
759 | ret = -ENOENT; |
760 | goto stop_BA_exit; | |
761 | } | |
762 | ||
513a1025 RR |
763 | #ifdef CONFIG_MAC80211_HT_DEBUG |
764 | printk(KERN_DEBUG "Tx BA session stop requested for %s tid %u\n", | |
765 | print_mac(mac, ra), tid); | |
766 | #endif /* CONFIG_MAC80211_HT_DEBUG */ | |
767 | ||
eadc8d9e RR |
768 | ieee80211_stop_queue(hw, sta->tid_to_tx_q[tid]); |
769 | ||
770 | *state = HT_AGG_STATE_REQ_STOP_BA_MSK | | |
771 | (initiator << HT_AGG_STATE_INITIATOR_SHIFT); | |
772 | ||
773 | if (local->ops->ampdu_action) | |
774 | ret = local->ops->ampdu_action(hw, IEEE80211_AMPDU_TX_STOP, | |
775 | ra, tid, NULL); | |
776 | ||
777 | /* case HW denied going back to legacy */ | |
778 | if (ret) { | |
779 | WARN_ON(ret != -EBUSY); | |
780 | *state = HT_AGG_STATE_OPERATIONAL; | |
781 | ieee80211_wake_queue(hw, sta->tid_to_tx_q[tid]); | |
782 | goto stop_BA_exit; | |
783 | } | |
784 | ||
785 | stop_BA_exit: | |
07346f81 | 786 | spin_unlock_bh(&sta->lock); |
d0709a65 | 787 | rcu_read_unlock(); |
eadc8d9e RR |
788 | return ret; |
789 | } | |
790 | EXPORT_SYMBOL(ieee80211_stop_tx_ba_session); | |
791 | ||
792 | void ieee80211_start_tx_ba_cb(struct ieee80211_hw *hw, u8 *ra, u16 tid) | |
793 | { | |
794 | struct ieee80211_local *local = hw_to_local(hw); | |
795 | struct sta_info *sta; | |
796 | u8 *state; | |
797 | DECLARE_MAC_BUF(mac); | |
798 | ||
799 | if (tid >= STA_TID_NUM) { | |
f4ea83dd | 800 | #ifdef CONFIG_MAC80211_HT_DEBUG |
eadc8d9e RR |
801 | printk(KERN_DEBUG "Bad TID value: tid = %d (>= %d)\n", |
802 | tid, STA_TID_NUM); | |
f4ea83dd | 803 | #endif |
eadc8d9e RR |
804 | return; |
805 | } | |
806 | ||
d0709a65 | 807 | rcu_read_lock(); |
eadc8d9e RR |
808 | sta = sta_info_get(local, ra); |
809 | if (!sta) { | |
d0709a65 | 810 | rcu_read_unlock(); |
f4ea83dd | 811 | #ifdef CONFIG_MAC80211_HT_DEBUG |
eadc8d9e RR |
812 | printk(KERN_DEBUG "Could not find station: %s\n", |
813 | print_mac(mac, ra)); | |
f4ea83dd | 814 | #endif |
eadc8d9e RR |
815 | return; |
816 | } | |
817 | ||
cee24a3e | 818 | state = &sta->ampdu_mlme.tid_state_tx[tid]; |
07346f81 | 819 | spin_lock_bh(&sta->lock); |
eadc8d9e RR |
820 | |
821 | if (!(*state & HT_ADDBA_REQUESTED_MSK)) { | |
f4ea83dd | 822 | #ifdef CONFIG_MAC80211_HT_DEBUG |
eadc8d9e RR |
823 | printk(KERN_DEBUG "addBA was not requested yet, state is %d\n", |
824 | *state); | |
f4ea83dd | 825 | #endif |
07346f81 | 826 | spin_unlock_bh(&sta->lock); |
d0709a65 | 827 | rcu_read_unlock(); |
eadc8d9e RR |
828 | return; |
829 | } | |
830 | ||
831 | WARN_ON_ONCE(*state & HT_ADDBA_DRV_READY_MSK); | |
832 | ||
833 | *state |= HT_ADDBA_DRV_READY_MSK; | |
834 | ||
835 | if (*state == HT_AGG_STATE_OPERATIONAL) { | |
f4ea83dd | 836 | #ifdef CONFIG_MAC80211_HT_DEBUG |
eadc8d9e | 837 | printk(KERN_DEBUG "Aggregation is on for tid %d \n", tid); |
f4ea83dd | 838 | #endif |
eadc8d9e RR |
839 | ieee80211_wake_queue(hw, sta->tid_to_tx_q[tid]); |
840 | } | |
07346f81 | 841 | spin_unlock_bh(&sta->lock); |
d0709a65 | 842 | rcu_read_unlock(); |
eadc8d9e RR |
843 | } |
844 | EXPORT_SYMBOL(ieee80211_start_tx_ba_cb); | |
845 | ||
846 | void ieee80211_stop_tx_ba_cb(struct ieee80211_hw *hw, u8 *ra, u8 tid) | |
847 | { | |
848 | struct ieee80211_local *local = hw_to_local(hw); | |
849 | struct sta_info *sta; | |
850 | u8 *state; | |
851 | int agg_queue; | |
852 | DECLARE_MAC_BUF(mac); | |
853 | ||
854 | if (tid >= STA_TID_NUM) { | |
f4ea83dd | 855 | #ifdef CONFIG_MAC80211_HT_DEBUG |
eadc8d9e RR |
856 | printk(KERN_DEBUG "Bad TID value: tid = %d (>= %d)\n", |
857 | tid, STA_TID_NUM); | |
f4ea83dd | 858 | #endif |
eadc8d9e RR |
859 | return; |
860 | } | |
861 | ||
513a1025 RR |
862 | #ifdef CONFIG_MAC80211_HT_DEBUG |
863 | printk(KERN_DEBUG "Stopping Tx BA session for %s tid %d\n", | |
eadc8d9e | 864 | print_mac(mac, ra), tid); |
513a1025 | 865 | #endif /* CONFIG_MAC80211_HT_DEBUG */ |
eadc8d9e | 866 | |
d0709a65 | 867 | rcu_read_lock(); |
eadc8d9e RR |
868 | sta = sta_info_get(local, ra); |
869 | if (!sta) { | |
f4ea83dd | 870 | #ifdef CONFIG_MAC80211_HT_DEBUG |
eadc8d9e RR |
871 | printk(KERN_DEBUG "Could not find station: %s\n", |
872 | print_mac(mac, ra)); | |
f4ea83dd | 873 | #endif |
d0709a65 | 874 | rcu_read_unlock(); |
eadc8d9e RR |
875 | return; |
876 | } | |
cee24a3e | 877 | state = &sta->ampdu_mlme.tid_state_tx[tid]; |
eadc8d9e | 878 | |
b83f4e15 | 879 | /* NOTE: no need to use sta->lock in this state check, as |
51cb6db0 DM |
880 | * ieee80211_stop_tx_ba_session will let only one stop call to |
881 | * pass through per sta/tid | |
882 | */ | |
eadc8d9e | 883 | if ((*state & HT_AGG_STATE_REQ_STOP_BA_MSK) == 0) { |
f4ea83dd | 884 | #ifdef CONFIG_MAC80211_HT_DEBUG |
eadc8d9e | 885 | printk(KERN_DEBUG "unexpected callback to A-MPDU stop\n"); |
f4ea83dd | 886 | #endif |
d0709a65 | 887 | rcu_read_unlock(); |
eadc8d9e RR |
888 | return; |
889 | } | |
890 | ||
891 | if (*state & HT_AGG_STATE_INITIATOR_MSK) | |
d0709a65 | 892 | ieee80211_send_delba(sta->sdata->dev, ra, tid, |
eadc8d9e RR |
893 | WLAN_BACK_INITIATOR, WLAN_REASON_QSTA_NOT_USE); |
894 | ||
895 | agg_queue = sta->tid_to_tx_q[tid]; | |
896 | ||
9e723492 | 897 | ieee80211_ht_agg_queue_remove(local, sta, tid, 1); |
eadc8d9e | 898 | |
51cb6db0 DM |
899 | /* We just requeued the all the frames that were in the |
900 | * removed queue, and since we might miss a softirq we do | |
901 | * netif_schedule_queue. ieee80211_wake_queue is not used | |
902 | * here as this queue is not necessarily stopped | |
903 | */ | |
904 | netif_schedule_queue(netdev_get_tx_queue(local->mdev, agg_queue)); | |
b83f4e15 | 905 | spin_lock_bh(&sta->lock); |
eadc8d9e | 906 | *state = HT_AGG_STATE_IDLE; |
cee24a3e RR |
907 | sta->ampdu_mlme.addba_req_num[tid] = 0; |
908 | kfree(sta->ampdu_mlme.tid_tx[tid]); | |
909 | sta->ampdu_mlme.tid_tx[tid] = NULL; | |
07346f81 | 910 | spin_unlock_bh(&sta->lock); |
eadc8d9e | 911 | |
d0709a65 | 912 | rcu_read_unlock(); |
eadc8d9e RR |
913 | } |
914 | EXPORT_SYMBOL(ieee80211_stop_tx_ba_cb); | |
915 | ||
916 | void ieee80211_start_tx_ba_cb_irqsafe(struct ieee80211_hw *hw, | |
917 | const u8 *ra, u16 tid) | |
918 | { | |
919 | struct ieee80211_local *local = hw_to_local(hw); | |
920 | struct ieee80211_ra_tid *ra_tid; | |
921 | struct sk_buff *skb = dev_alloc_skb(0); | |
922 | ||
923 | if (unlikely(!skb)) { | |
f4ea83dd | 924 | #ifdef CONFIG_MAC80211_HT_DEBUG |
eadc8d9e RR |
925 | if (net_ratelimit()) |
926 | printk(KERN_WARNING "%s: Not enough memory, " | |
927 | "dropping start BA session", skb->dev->name); | |
f4ea83dd | 928 | #endif |
eadc8d9e RR |
929 | return; |
930 | } | |
931 | ra_tid = (struct ieee80211_ra_tid *) &skb->cb; | |
932 | memcpy(&ra_tid->ra, ra, ETH_ALEN); | |
933 | ra_tid->tid = tid; | |
934 | ||
935 | skb->pkt_type = IEEE80211_ADDBA_MSG; | |
936 | skb_queue_tail(&local->skb_queue, skb); | |
937 | tasklet_schedule(&local->tasklet); | |
938 | } | |
939 | EXPORT_SYMBOL(ieee80211_start_tx_ba_cb_irqsafe); | |
940 | ||
941 | void ieee80211_stop_tx_ba_cb_irqsafe(struct ieee80211_hw *hw, | |
942 | const u8 *ra, u16 tid) | |
943 | { | |
944 | struct ieee80211_local *local = hw_to_local(hw); | |
945 | struct ieee80211_ra_tid *ra_tid; | |
946 | struct sk_buff *skb = dev_alloc_skb(0); | |
947 | ||
948 | if (unlikely(!skb)) { | |
f4ea83dd | 949 | #ifdef CONFIG_MAC80211_HT_DEBUG |
eadc8d9e RR |
950 | if (net_ratelimit()) |
951 | printk(KERN_WARNING "%s: Not enough memory, " | |
952 | "dropping stop BA session", skb->dev->name); | |
f4ea83dd | 953 | #endif |
eadc8d9e RR |
954 | return; |
955 | } | |
956 | ra_tid = (struct ieee80211_ra_tid *) &skb->cb; | |
957 | memcpy(&ra_tid->ra, ra, ETH_ALEN); | |
958 | ra_tid->tid = tid; | |
959 | ||
960 | skb->pkt_type = IEEE80211_DELBA_MSG; | |
961 | skb_queue_tail(&local->skb_queue, skb); | |
962 | tasklet_schedule(&local->tasklet); | |
963 | } | |
964 | EXPORT_SYMBOL(ieee80211_stop_tx_ba_cb_irqsafe); | |
965 | ||
f0706e82 JB |
966 | static void ieee80211_set_multicast_list(struct net_device *dev) |
967 | { | |
968 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
969 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
4150c572 | 970 | int allmulti, promisc, sdata_allmulti, sdata_promisc; |
f0706e82 | 971 | |
4150c572 JB |
972 | allmulti = !!(dev->flags & IFF_ALLMULTI); |
973 | promisc = !!(dev->flags & IFF_PROMISC); | |
b52f2198 JB |
974 | sdata_allmulti = !!(sdata->flags & IEEE80211_SDATA_ALLMULTI); |
975 | sdata_promisc = !!(sdata->flags & IEEE80211_SDATA_PROMISC); | |
4150c572 JB |
976 | |
977 | if (allmulti != sdata_allmulti) { | |
978 | if (dev->flags & IFF_ALLMULTI) | |
53918994 | 979 | atomic_inc(&local->iff_allmultis); |
4150c572 | 980 | else |
53918994 | 981 | atomic_dec(&local->iff_allmultis); |
13262ffd | 982 | sdata->flags ^= IEEE80211_SDATA_ALLMULTI; |
f0706e82 | 983 | } |
4150c572 JB |
984 | |
985 | if (promisc != sdata_promisc) { | |
986 | if (dev->flags & IFF_PROMISC) | |
53918994 | 987 | atomic_inc(&local->iff_promiscs); |
4150c572 | 988 | else |
53918994 | 989 | atomic_dec(&local->iff_promiscs); |
13262ffd | 990 | sdata->flags ^= IEEE80211_SDATA_PROMISC; |
f0706e82 | 991 | } |
4150c572 JB |
992 | |
993 | dev_mc_sync(local->mdev, dev); | |
f0706e82 JB |
994 | } |
995 | ||
3b04ddde SH |
996 | static const struct header_ops ieee80211_header_ops = { |
997 | .create = eth_header, | |
998 | .parse = header_parse_80211, | |
999 | .rebuild = eth_rebuild_header, | |
1000 | .cache = eth_header_cache, | |
1001 | .cache_update = eth_header_cache_update, | |
1002 | }; | |
1003 | ||
b2c258fb | 1004 | void ieee80211_if_setup(struct net_device *dev) |
f0706e82 | 1005 | { |
b2c258fb JB |
1006 | ether_setup(dev); |
1007 | dev->hard_start_xmit = ieee80211_subif_start_xmit; | |
1008 | dev->wireless_handlers = &ieee80211_iw_handler_def; | |
1009 | dev->set_multicast_list = ieee80211_set_multicast_list; | |
1010 | dev->change_mtu = ieee80211_change_mtu; | |
b2c258fb JB |
1011 | dev->open = ieee80211_open; |
1012 | dev->stop = ieee80211_stop; | |
75636525 | 1013 | dev->destructor = free_netdev; |
bdbe8195 LCC |
1014 | /* we will validate the address ourselves in ->open */ |
1015 | dev->validate_addr = NULL; | |
b2c258fb | 1016 | } |
f0706e82 | 1017 | |
b2c258fb JB |
1018 | /* everything else */ |
1019 | ||
9d139c81 | 1020 | int ieee80211_if_config(struct ieee80211_sub_if_data *sdata, u32 changed) |
b2c258fb | 1021 | { |
9d139c81 | 1022 | struct ieee80211_local *local = sdata->local; |
b2c258fb | 1023 | struct ieee80211_if_conf conf; |
b2c258fb | 1024 | |
9d139c81 JB |
1025 | if (WARN_ON(!netif_running(sdata->dev))) |
1026 | return 0; | |
1027 | ||
1028 | if (!local->ops->config_interface) | |
f0706e82 | 1029 | return 0; |
f0706e82 | 1030 | |
b2c258fb | 1031 | memset(&conf, 0, sizeof(conf)); |
9d139c81 JB |
1032 | conf.changed = changed; |
1033 | ||
51fb61e7 JB |
1034 | if (sdata->vif.type == IEEE80211_IF_TYPE_STA || |
1035 | sdata->vif.type == IEEE80211_IF_TYPE_IBSS) { | |
4150c572 | 1036 | conf.bssid = sdata->u.sta.bssid; |
b2c258fb JB |
1037 | conf.ssid = sdata->u.sta.ssid; |
1038 | conf.ssid_len = sdata->u.sta.ssid_len; | |
51fb61e7 | 1039 | } else if (sdata->vif.type == IEEE80211_IF_TYPE_AP) { |
9d139c81 | 1040 | conf.bssid = sdata->dev->dev_addr; |
b2c258fb JB |
1041 | conf.ssid = sdata->u.ap.ssid; |
1042 | conf.ssid_len = sdata->u.ap.ssid_len; | |
9d139c81 JB |
1043 | } else if (ieee80211_vif_is_mesh(&sdata->vif)) { |
1044 | u8 zero[ETH_ALEN] = { 0 }; | |
1045 | conf.bssid = zero; | |
1046 | conf.ssid = zero; | |
1047 | conf.ssid_len = 0; | |
1048 | } else { | |
1049 | WARN_ON(1); | |
1050 | return -EINVAL; | |
f0706e82 | 1051 | } |
f0706e82 | 1052 | |
9d139c81 JB |
1053 | if (WARN_ON(!conf.bssid && (changed & IEEE80211_IFCC_BSSID))) |
1054 | return -EINVAL; | |
f0706e82 | 1055 | |
9d139c81 JB |
1056 | if (WARN_ON(!conf.ssid && (changed & IEEE80211_IFCC_SSID))) |
1057 | return -EINVAL; | |
f0706e82 | 1058 | |
9d139c81 JB |
1059 | return local->ops->config_interface(local_to_hw(local), |
1060 | &sdata->vif, &conf); | |
b2c258fb | 1061 | } |
f0706e82 | 1062 | |
b2c258fb JB |
1063 | int ieee80211_hw_config(struct ieee80211_local *local) |
1064 | { | |
b2c258fb JB |
1065 | struct ieee80211_channel *chan; |
1066 | int ret = 0; | |
f0706e82 | 1067 | |
8318d78a | 1068 | if (local->sta_sw_scanning) |
b2c258fb | 1069 | chan = local->scan_channel; |
8318d78a | 1070 | else |
b2c258fb | 1071 | chan = local->oper_channel; |
f0706e82 | 1072 | |
8318d78a JB |
1073 | local->hw.conf.channel = chan; |
1074 | ||
1075 | if (!local->hw.conf.power_level) | |
1076 | local->hw.conf.power_level = chan->max_power; | |
1077 | else | |
1078 | local->hw.conf.power_level = min(chan->max_power, | |
1079 | local->hw.conf.power_level); | |
1080 | ||
1081 | local->hw.conf.max_antenna_gain = chan->max_antenna_gain; | |
f0706e82 | 1082 | |
b2c258fb | 1083 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
8318d78a JB |
1084 | printk(KERN_DEBUG "%s: HW CONFIG: freq=%d\n", |
1085 | wiphy_name(local->hw.wiphy), chan->center_freq); | |
1086 | #endif | |
b2c258fb | 1087 | |
f7c4daed | 1088 | if (local->open_count) |
b2c258fb | 1089 | ret = local->ops->config(local_to_hw(local), &local->hw.conf); |
f0706e82 | 1090 | |
b2c258fb JB |
1091 | return ret; |
1092 | } | |
f0706e82 | 1093 | |
d3c990fb | 1094 | /** |
38668c05 TW |
1095 | * ieee80211_handle_ht should be used only after legacy configuration |
1096 | * has been determined namely band, as ht configuration depends upon | |
1097 | * the hardware's HT abilities for a _specific_ band. | |
d3c990fb | 1098 | */ |
38668c05 | 1099 | u32 ieee80211_handle_ht(struct ieee80211_local *local, int enable_ht, |
d3c990fb RR |
1100 | struct ieee80211_ht_info *req_ht_cap, |
1101 | struct ieee80211_ht_bss_info *req_bss_cap) | |
1102 | { | |
1103 | struct ieee80211_conf *conf = &local->hw.conf; | |
8318d78a | 1104 | struct ieee80211_supported_band *sband; |
38668c05 TW |
1105 | struct ieee80211_ht_info ht_conf; |
1106 | struct ieee80211_ht_bss_info ht_bss_conf; | |
38668c05 | 1107 | u32 changed = 0; |
edcdf8b2 RR |
1108 | int i; |
1109 | u8 max_tx_streams = IEEE80211_HT_CAP_MAX_STREAMS; | |
1110 | u8 tx_mcs_set_cap; | |
d3c990fb | 1111 | |
8318d78a JB |
1112 | sband = local->hw.wiphy->bands[conf->channel->band]; |
1113 | ||
edcdf8b2 RR |
1114 | memset(&ht_conf, 0, sizeof(struct ieee80211_ht_info)); |
1115 | memset(&ht_bss_conf, 0, sizeof(struct ieee80211_ht_bss_info)); | |
1116 | ||
d3c990fb | 1117 | /* HT is not supported */ |
8318d78a | 1118 | if (!sband->ht_info.ht_supported) { |
d3c990fb | 1119 | conf->flags &= ~IEEE80211_CONF_SUPPORT_HT_MODE; |
edcdf8b2 | 1120 | goto out; |
d3c990fb RR |
1121 | } |
1122 | ||
edcdf8b2 RR |
1123 | /* disable HT */ |
1124 | if (!enable_ht) { | |
1125 | if (conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE) | |
38668c05 | 1126 | changed |= BSS_CHANGED_HT; |
edcdf8b2 RR |
1127 | conf->flags &= ~IEEE80211_CONF_SUPPORT_HT_MODE; |
1128 | conf->ht_conf.ht_supported = 0; | |
1129 | goto out; | |
1130 | } | |
38668c05 | 1131 | |
38668c05 | 1132 | |
edcdf8b2 RR |
1133 | if (!(conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE)) |
1134 | changed |= BSS_CHANGED_HT; | |
38668c05 | 1135 | |
edcdf8b2 RR |
1136 | conf->flags |= IEEE80211_CONF_SUPPORT_HT_MODE; |
1137 | ht_conf.ht_supported = 1; | |
38668c05 | 1138 | |
edcdf8b2 RR |
1139 | ht_conf.cap = req_ht_cap->cap & sband->ht_info.cap; |
1140 | ht_conf.cap &= ~(IEEE80211_HT_CAP_MIMO_PS); | |
1141 | ht_conf.cap |= sband->ht_info.cap & IEEE80211_HT_CAP_MIMO_PS; | |
1142 | ht_bss_conf.primary_channel = req_bss_cap->primary_channel; | |
1143 | ht_bss_conf.bss_cap = req_bss_cap->bss_cap; | |
1144 | ht_bss_conf.bss_op_mode = req_bss_cap->bss_op_mode; | |
38668c05 | 1145 | |
edcdf8b2 RR |
1146 | ht_conf.ampdu_factor = req_ht_cap->ampdu_factor; |
1147 | ht_conf.ampdu_density = req_ht_cap->ampdu_density; | |
38668c05 | 1148 | |
edcdf8b2 RR |
1149 | /* Bits 96-100 */ |
1150 | tx_mcs_set_cap = sband->ht_info.supp_mcs_set[12]; | |
1151 | ||
1152 | /* configure suppoerted Tx MCS according to requested MCS | |
1153 | * (based in most cases on Rx capabilities of peer) and self | |
1154 | * Tx MCS capabilities (as defined by low level driver HW | |
1155 | * Tx capabilities) */ | |
1156 | if (!(tx_mcs_set_cap & IEEE80211_HT_CAP_MCS_TX_DEFINED)) | |
1157 | goto check_changed; | |
d3c990fb | 1158 | |
edcdf8b2 RR |
1159 | /* Counting from 0 therfore + 1 */ |
1160 | if (tx_mcs_set_cap & IEEE80211_HT_CAP_MCS_TX_RX_DIFF) | |
1161 | max_tx_streams = ((tx_mcs_set_cap & | |
1162 | IEEE80211_HT_CAP_MCS_TX_STREAMS) >> 2) + 1; | |
1163 | ||
1164 | for (i = 0; i < max_tx_streams; i++) | |
1165 | ht_conf.supp_mcs_set[i] = | |
1166 | sband->ht_info.supp_mcs_set[i] & | |
1167 | req_ht_cap->supp_mcs_set[i]; | |
1168 | ||
1169 | if (tx_mcs_set_cap & IEEE80211_HT_CAP_MCS_TX_UEQM) | |
1170 | for (i = IEEE80211_SUPP_MCS_SET_UEQM; | |
1171 | i < IEEE80211_SUPP_MCS_SET_LEN; i++) | |
1172 | ht_conf.supp_mcs_set[i] = | |
1173 | sband->ht_info.supp_mcs_set[i] & | |
1174 | req_ht_cap->supp_mcs_set[i]; | |
1175 | ||
1176 | check_changed: | |
1177 | /* if bss configuration changed store the new one */ | |
1178 | if (memcmp(&conf->ht_conf, &ht_conf, sizeof(ht_conf)) || | |
1179 | memcmp(&conf->ht_bss_conf, &ht_bss_conf, sizeof(ht_bss_conf))) { | |
1180 | changed |= BSS_CHANGED_HT; | |
1181 | memcpy(&conf->ht_conf, &ht_conf, sizeof(ht_conf)); | |
1182 | memcpy(&conf->ht_bss_conf, &ht_bss_conf, sizeof(ht_bss_conf)); | |
1183 | } | |
1184 | out: | |
38668c05 | 1185 | return changed; |
d3c990fb RR |
1186 | } |
1187 | ||
471b3efd JB |
1188 | void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, |
1189 | u32 changed) | |
d9430a32 | 1190 | { |
471b3efd JB |
1191 | struct ieee80211_local *local = sdata->local; |
1192 | ||
1193 | if (!changed) | |
1194 | return; | |
1195 | ||
1196 | if (local->ops->bss_info_changed) | |
1197 | local->ops->bss_info_changed(local_to_hw(local), | |
1198 | &sdata->vif, | |
1199 | &sdata->bss_conf, | |
1200 | changed); | |
d9430a32 DD |
1201 | } |
1202 | ||
fc32f924 | 1203 | u32 ieee80211_reset_erp_info(struct net_device *dev) |
d9430a32 DD |
1204 | { |
1205 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
1206 | ||
471b3efd JB |
1207 | sdata->bss_conf.use_cts_prot = 0; |
1208 | sdata->bss_conf.use_short_preamble = 0; | |
fc32f924 | 1209 | return BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_ERP_PREAMBLE; |
d9430a32 DD |
1210 | } |
1211 | ||
f0706e82 | 1212 | void ieee80211_tx_status_irqsafe(struct ieee80211_hw *hw, |
e039fa4a | 1213 | struct sk_buff *skb) |
f0706e82 JB |
1214 | { |
1215 | struct ieee80211_local *local = hw_to_local(hw); | |
e039fa4a | 1216 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
f0706e82 JB |
1217 | int tmp; |
1218 | ||
1219 | skb->dev = local->mdev; | |
f0706e82 | 1220 | skb->pkt_type = IEEE80211_TX_STATUS_MSG; |
e039fa4a | 1221 | skb_queue_tail(info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS ? |
f0706e82 JB |
1222 | &local->skb_queue : &local->skb_queue_unreliable, skb); |
1223 | tmp = skb_queue_len(&local->skb_queue) + | |
1224 | skb_queue_len(&local->skb_queue_unreliable); | |
1225 | while (tmp > IEEE80211_IRQSAFE_QUEUE_LIMIT && | |
1226 | (skb = skb_dequeue(&local->skb_queue_unreliable))) { | |
f0706e82 JB |
1227 | dev_kfree_skb_irq(skb); |
1228 | tmp--; | |
1229 | I802_DEBUG_INC(local->tx_status_drop); | |
1230 | } | |
1231 | tasklet_schedule(&local->tasklet); | |
1232 | } | |
1233 | EXPORT_SYMBOL(ieee80211_tx_status_irqsafe); | |
1234 | ||
1235 | static void ieee80211_tasklet_handler(unsigned long data) | |
1236 | { | |
1237 | struct ieee80211_local *local = (struct ieee80211_local *) data; | |
1238 | struct sk_buff *skb; | |
1239 | struct ieee80211_rx_status rx_status; | |
eadc8d9e | 1240 | struct ieee80211_ra_tid *ra_tid; |
f0706e82 JB |
1241 | |
1242 | while ((skb = skb_dequeue(&local->skb_queue)) || | |
1243 | (skb = skb_dequeue(&local->skb_queue_unreliable))) { | |
1244 | switch (skb->pkt_type) { | |
1245 | case IEEE80211_RX_MSG: | |
1246 | /* status is in skb->cb */ | |
1247 | memcpy(&rx_status, skb->cb, sizeof(rx_status)); | |
51fb61e7 | 1248 | /* Clear skb->pkt_type in order to not confuse kernel |
f0706e82 JB |
1249 | * netstack. */ |
1250 | skb->pkt_type = 0; | |
1251 | __ieee80211_rx(local_to_hw(local), skb, &rx_status); | |
1252 | break; | |
1253 | case IEEE80211_TX_STATUS_MSG: | |
f0706e82 | 1254 | skb->pkt_type = 0; |
e039fa4a | 1255 | ieee80211_tx_status(local_to_hw(local), skb); |
f0706e82 | 1256 | break; |
eadc8d9e RR |
1257 | case IEEE80211_DELBA_MSG: |
1258 | ra_tid = (struct ieee80211_ra_tid *) &skb->cb; | |
1259 | ieee80211_stop_tx_ba_cb(local_to_hw(local), | |
1260 | ra_tid->ra, ra_tid->tid); | |
1261 | dev_kfree_skb(skb); | |
1262 | break; | |
1263 | case IEEE80211_ADDBA_MSG: | |
1264 | ra_tid = (struct ieee80211_ra_tid *) &skb->cb; | |
1265 | ieee80211_start_tx_ba_cb(local_to_hw(local), | |
1266 | ra_tid->ra, ra_tid->tid); | |
1267 | dev_kfree_skb(skb); | |
1268 | break ; | |
f4ea83dd JB |
1269 | default: |
1270 | WARN_ON(1); | |
f0706e82 JB |
1271 | dev_kfree_skb(skb); |
1272 | break; | |
1273 | } | |
1274 | } | |
1275 | } | |
1276 | ||
f0706e82 JB |
1277 | /* Remove added headers (e.g., QoS control), encryption header/MIC, etc. to |
1278 | * make a prepared TX frame (one that has been given to hw) to look like brand | |
1279 | * new IEEE 802.11 frame that is ready to go through TX processing again. | |
d0f09804 | 1280 | */ |
f0706e82 JB |
1281 | static void ieee80211_remove_tx_extra(struct ieee80211_local *local, |
1282 | struct ieee80211_key *key, | |
e039fa4a | 1283 | struct sk_buff *skb) |
f0706e82 | 1284 | { |
62bf1d76 HH |
1285 | unsigned int hdrlen, iv_len, mic_len; |
1286 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; | |
f0706e82 | 1287 | |
62bf1d76 | 1288 | hdrlen = ieee80211_hdrlen(hdr->frame_control); |
f0706e82 JB |
1289 | |
1290 | if (!key) | |
1291 | goto no_key; | |
1292 | ||
8f20fc24 | 1293 | switch (key->conf.alg) { |
f0706e82 JB |
1294 | case ALG_WEP: |
1295 | iv_len = WEP_IV_LEN; | |
1296 | mic_len = WEP_ICV_LEN; | |
1297 | break; | |
1298 | case ALG_TKIP: | |
1299 | iv_len = TKIP_IV_LEN; | |
1300 | mic_len = TKIP_ICV_LEN; | |
1301 | break; | |
1302 | case ALG_CCMP: | |
1303 | iv_len = CCMP_HDR_LEN; | |
1304 | mic_len = CCMP_MIC_LEN; | |
1305 | break; | |
1306 | default: | |
1307 | goto no_key; | |
1308 | } | |
1309 | ||
62bf1d76 | 1310 | if (skb->len >= hdrlen + mic_len && |
11a843b7 | 1311 | !(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)) |
f0706e82 | 1312 | skb_trim(skb, skb->len - mic_len); |
62bf1d76 | 1313 | if (skb->len >= hdrlen + iv_len) { |
f0706e82 | 1314 | memmove(skb->data + iv_len, skb->data, hdrlen); |
62bf1d76 | 1315 | hdr = (struct ieee80211_hdr *)skb_pull(skb, iv_len); |
f0706e82 JB |
1316 | } |
1317 | ||
1318 | no_key: | |
62bf1d76 HH |
1319 | if (ieee80211_is_data_qos(hdr->frame_control)) { |
1320 | hdr->frame_control &= ~cpu_to_le16(IEEE80211_STYPE_QOS_DATA); | |
1321 | memmove(skb->data + IEEE80211_QOS_CTL_LEN, skb->data, | |
1322 | hdrlen - IEEE80211_QOS_CTL_LEN); | |
1323 | skb_pull(skb, IEEE80211_QOS_CTL_LEN); | |
f0706e82 JB |
1324 | } |
1325 | } | |
1326 | ||
d46e144b JB |
1327 | static void ieee80211_handle_filtered_frame(struct ieee80211_local *local, |
1328 | struct sta_info *sta, | |
e039fa4a | 1329 | struct sk_buff *skb) |
d46e144b | 1330 | { |
e039fa4a JB |
1331 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
1332 | ||
d46e144b JB |
1333 | sta->tx_filtered_count++; |
1334 | ||
1335 | /* | |
1336 | * Clear the TX filter mask for this STA when sending the next | |
1337 | * packet. If the STA went to power save mode, this will happen | |
f6d97104 | 1338 | * when it wakes up for the next time. |
d46e144b | 1339 | */ |
07346f81 | 1340 | set_sta_flags(sta, WLAN_STA_CLEAR_PS_FILT); |
d46e144b JB |
1341 | |
1342 | /* | |
1343 | * This code races in the following way: | |
1344 | * | |
1345 | * (1) STA sends frame indicating it will go to sleep and does so | |
1346 | * (2) hardware/firmware adds STA to filter list, passes frame up | |
1347 | * (3) hardware/firmware processes TX fifo and suppresses a frame | |
1348 | * (4) we get TX status before having processed the frame and | |
1349 | * knowing that the STA has gone to sleep. | |
1350 | * | |
1351 | * This is actually quite unlikely even when both those events are | |
1352 | * processed from interrupts coming in quickly after one another or | |
1353 | * even at the same time because we queue both TX status events and | |
1354 | * RX frames to be processed by a tasklet and process them in the | |
1355 | * same order that they were received or TX status last. Hence, there | |
1356 | * is no race as long as the frame RX is processed before the next TX | |
1357 | * status, which drivers can ensure, see below. | |
1358 | * | |
1359 | * Note that this can only happen if the hardware or firmware can | |
1360 | * actually add STAs to the filter list, if this is done by the | |
1361 | * driver in response to set_tim() (which will only reduce the race | |
1362 | * this whole filtering tries to solve, not completely solve it) | |
1363 | * this situation cannot happen. | |
1364 | * | |
1365 | * To completely solve this race drivers need to make sure that they | |
1366 | * (a) don't mix the irq-safe/not irq-safe TX status/RX processing | |
1367 | * functions and | |
1368 | * (b) always process RX events before TX status events if ordering | |
1369 | * can be unknown, for example with different interrupt status | |
1370 | * bits. | |
1371 | */ | |
07346f81 | 1372 | if (test_sta_flags(sta, WLAN_STA_PS) && |
d46e144b | 1373 | skb_queue_len(&sta->tx_filtered) < STA_MAX_TX_BUFFER) { |
e039fa4a | 1374 | ieee80211_remove_tx_extra(local, sta->key, skb); |
d46e144b JB |
1375 | skb_queue_tail(&sta->tx_filtered, skb); |
1376 | return; | |
1377 | } | |
1378 | ||
07346f81 | 1379 | if (!test_sta_flags(sta, WLAN_STA_PS) && |
e039fa4a | 1380 | !(info->flags & IEEE80211_TX_CTL_REQUEUE)) { |
d46e144b | 1381 | /* Software retry the packet once */ |
e039fa4a JB |
1382 | info->flags |= IEEE80211_TX_CTL_REQUEUE; |
1383 | ieee80211_remove_tx_extra(local, sta->key, skb); | |
d46e144b JB |
1384 | dev_queue_xmit(skb); |
1385 | return; | |
1386 | } | |
1387 | ||
f4ea83dd | 1388 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
d46e144b JB |
1389 | if (net_ratelimit()) |
1390 | printk(KERN_DEBUG "%s: dropped TX filtered frame, " | |
1391 | "queue_len=%d PS=%d @%lu\n", | |
1392 | wiphy_name(local->hw.wiphy), | |
1393 | skb_queue_len(&sta->tx_filtered), | |
07346f81 | 1394 | !!test_sta_flags(sta, WLAN_STA_PS), jiffies); |
f4ea83dd | 1395 | #endif |
d46e144b JB |
1396 | dev_kfree_skb(skb); |
1397 | } | |
1398 | ||
e039fa4a | 1399 | void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb) |
f0706e82 JB |
1400 | { |
1401 | struct sk_buff *skb2; | |
1402 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; | |
1403 | struct ieee80211_local *local = hw_to_local(hw); | |
e039fa4a | 1404 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
f0706e82 | 1405 | u16 frag, type; |
429a3805 | 1406 | __le16 fc; |
b306f453 JB |
1407 | struct ieee80211_tx_status_rtap_hdr *rthdr; |
1408 | struct ieee80211_sub_if_data *sdata; | |
3d30d949 | 1409 | struct net_device *prev_dev = NULL; |
429a3805 | 1410 | struct sta_info *sta; |
f0706e82 | 1411 | |
d0709a65 JB |
1412 | rcu_read_lock(); |
1413 | ||
e039fa4a | 1414 | if (info->status.excessive_retries) { |
f0706e82 JB |
1415 | sta = sta_info_get(local, hdr->addr1); |
1416 | if (sta) { | |
07346f81 | 1417 | if (test_sta_flags(sta, WLAN_STA_PS)) { |
d46e144b JB |
1418 | /* |
1419 | * The STA is in power save mode, so assume | |
f0706e82 JB |
1420 | * that this TX packet failed because of that. |
1421 | */ | |
e039fa4a | 1422 | ieee80211_handle_filtered_frame(local, sta, skb); |
d0709a65 | 1423 | rcu_read_unlock(); |
d46e144b | 1424 | return; |
f0706e82 | 1425 | } |
f0706e82 JB |
1426 | } |
1427 | } | |
1428 | ||
429a3805 RR |
1429 | fc = hdr->frame_control; |
1430 | ||
1431 | if ((info->flags & IEEE80211_TX_STAT_AMPDU_NO_BACK) && | |
1432 | (ieee80211_is_data_qos(fc))) { | |
1433 | u16 tid, ssn; | |
1434 | u8 *qc; | |
1435 | sta = sta_info_get(local, hdr->addr1); | |
1436 | if (sta) { | |
1437 | qc = ieee80211_get_qos_ctl(hdr); | |
1438 | tid = qc[0] & 0xf; | |
1439 | ssn = ((le16_to_cpu(hdr->seq_ctrl) + 0x10) | |
1440 | & IEEE80211_SCTL_SEQ); | |
1441 | ieee80211_send_bar(sta->sdata->dev, hdr->addr1, | |
1442 | tid, ssn); | |
1443 | } | |
1444 | } | |
1445 | ||
e039fa4a | 1446 | if (info->flags & IEEE80211_TX_STAT_TX_FILTERED) { |
f0706e82 JB |
1447 | sta = sta_info_get(local, hdr->addr1); |
1448 | if (sta) { | |
e039fa4a | 1449 | ieee80211_handle_filtered_frame(local, sta, skb); |
d0709a65 | 1450 | rcu_read_unlock(); |
f0706e82 JB |
1451 | return; |
1452 | } | |
1abbe498 | 1453 | } else |
e039fa4a | 1454 | rate_control_tx_status(local->mdev, skb); |
f0706e82 | 1455 | |
d0709a65 JB |
1456 | rcu_read_unlock(); |
1457 | ||
f0706e82 JB |
1458 | ieee80211_led_tx(local, 0); |
1459 | ||
1460 | /* SNMP counters | |
1461 | * Fragments are passed to low-level drivers as separate skbs, so these | |
1462 | * are actually fragments, not frames. Update frame counters only for | |
1463 | * the first fragment of the frame. */ | |
1464 | ||
1465 | frag = le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_FRAG; | |
1466 | type = le16_to_cpu(hdr->frame_control) & IEEE80211_FCTL_FTYPE; | |
1467 | ||
e039fa4a | 1468 | if (info->flags & IEEE80211_TX_STAT_ACK) { |
f0706e82 JB |
1469 | if (frag == 0) { |
1470 | local->dot11TransmittedFrameCount++; | |
1471 | if (is_multicast_ether_addr(hdr->addr1)) | |
1472 | local->dot11MulticastTransmittedFrameCount++; | |
e039fa4a | 1473 | if (info->status.retry_count > 0) |
f0706e82 | 1474 | local->dot11RetryCount++; |
e039fa4a | 1475 | if (info->status.retry_count > 1) |
f0706e82 JB |
1476 | local->dot11MultipleRetryCount++; |
1477 | } | |
1478 | ||
1479 | /* This counter shall be incremented for an acknowledged MPDU | |
1480 | * with an individual address in the address 1 field or an MPDU | |
1481 | * with a multicast address in the address 1 field of type Data | |
1482 | * or Management. */ | |
1483 | if (!is_multicast_ether_addr(hdr->addr1) || | |
1484 | type == IEEE80211_FTYPE_DATA || | |
1485 | type == IEEE80211_FTYPE_MGMT) | |
1486 | local->dot11TransmittedFragmentCount++; | |
1487 | } else { | |
1488 | if (frag == 0) | |
1489 | local->dot11FailedCount++; | |
1490 | } | |
1491 | ||
b306f453 JB |
1492 | /* this was a transmitted frame, but now we want to reuse it */ |
1493 | skb_orphan(skb); | |
1494 | ||
3d30d949 MW |
1495 | /* |
1496 | * This is a bit racy but we can avoid a lot of work | |
1497 | * with this test... | |
1498 | */ | |
1499 | if (!local->monitors && !local->cooked_mntrs) { | |
f0706e82 JB |
1500 | dev_kfree_skb(skb); |
1501 | return; | |
1502 | } | |
1503 | ||
b306f453 | 1504 | /* send frame to monitor interfaces now */ |
f0706e82 | 1505 | |
b306f453 JB |
1506 | if (skb_headroom(skb) < sizeof(*rthdr)) { |
1507 | printk(KERN_ERR "ieee80211_tx_status: headroom too small\n"); | |
f0706e82 JB |
1508 | dev_kfree_skb(skb); |
1509 | return; | |
1510 | } | |
f0706e82 | 1511 | |
988c0f72 | 1512 | rthdr = (struct ieee80211_tx_status_rtap_hdr *) |
b306f453 JB |
1513 | skb_push(skb, sizeof(*rthdr)); |
1514 | ||
1515 | memset(rthdr, 0, sizeof(*rthdr)); | |
1516 | rthdr->hdr.it_len = cpu_to_le16(sizeof(*rthdr)); | |
1517 | rthdr->hdr.it_present = | |
1518 | cpu_to_le32((1 << IEEE80211_RADIOTAP_TX_FLAGS) | | |
1519 | (1 << IEEE80211_RADIOTAP_DATA_RETRIES)); | |
1520 | ||
e039fa4a | 1521 | if (!(info->flags & IEEE80211_TX_STAT_ACK) && |
b306f453 JB |
1522 | !is_multicast_ether_addr(hdr->addr1)) |
1523 | rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_FAIL); | |
1524 | ||
e039fa4a JB |
1525 | if ((info->flags & IEEE80211_TX_CTL_USE_RTS_CTS) && |
1526 | (info->flags & IEEE80211_TX_CTL_USE_CTS_PROTECT)) | |
b306f453 | 1527 | rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_CTS); |
e039fa4a | 1528 | else if (info->flags & IEEE80211_TX_CTL_USE_RTS_CTS) |
b306f453 JB |
1529 | rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_RTS); |
1530 | ||
e039fa4a | 1531 | rthdr->data_retries = info->status.retry_count; |
b306f453 | 1532 | |
3d30d949 MW |
1533 | /* XXX: is this sufficient for BPF? */ |
1534 | skb_set_mac_header(skb, 0); | |
1535 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
1536 | skb->pkt_type = PACKET_OTHERHOST; | |
1537 | skb->protocol = htons(ETH_P_802_2); | |
1538 | memset(skb->cb, 0, sizeof(skb->cb)); | |
1539 | ||
79010420 | 1540 | rcu_read_lock(); |
79010420 | 1541 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { |
51fb61e7 | 1542 | if (sdata->vif.type == IEEE80211_IF_TYPE_MNTR) { |
b306f453 JB |
1543 | if (!netif_running(sdata->dev)) |
1544 | continue; | |
3d30d949 MW |
1545 | |
1546 | if (prev_dev) { | |
79010420 | 1547 | skb2 = skb_clone(skb, GFP_ATOMIC); |
3d30d949 MW |
1548 | if (skb2) { |
1549 | skb2->dev = prev_dev; | |
1550 | netif_rx(skb2); | |
1551 | } | |
1552 | } | |
1553 | ||
1554 | prev_dev = sdata->dev; | |
b306f453 JB |
1555 | } |
1556 | } | |
3d30d949 MW |
1557 | if (prev_dev) { |
1558 | skb->dev = prev_dev; | |
1559 | netif_rx(skb); | |
1560 | skb = NULL; | |
1561 | } | |
79010420 | 1562 | rcu_read_unlock(); |
3d30d949 | 1563 | dev_kfree_skb(skb); |
f0706e82 JB |
1564 | } |
1565 | EXPORT_SYMBOL(ieee80211_tx_status); | |
1566 | ||
f0706e82 JB |
1567 | struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len, |
1568 | const struct ieee80211_ops *ops) | |
1569 | { | |
f0706e82 | 1570 | struct ieee80211_local *local; |
f0706e82 JB |
1571 | int priv_size; |
1572 | struct wiphy *wiphy; | |
1573 | ||
1574 | /* Ensure 32-byte alignment of our private data and hw private data. | |
1575 | * We use the wiphy priv data for both our ieee80211_local and for | |
1576 | * the driver's private data | |
1577 | * | |
1578 | * In memory it'll be like this: | |
1579 | * | |
1580 | * +-------------------------+ | |
1581 | * | struct wiphy | | |
1582 | * +-------------------------+ | |
1583 | * | struct ieee80211_local | | |
1584 | * +-------------------------+ | |
1585 | * | driver's private data | | |
1586 | * +-------------------------+ | |
1587 | * | |
1588 | */ | |
1589 | priv_size = ((sizeof(struct ieee80211_local) + | |
1590 | NETDEV_ALIGN_CONST) & ~NETDEV_ALIGN_CONST) + | |
1591 | priv_data_len; | |
1592 | ||
1593 | wiphy = wiphy_new(&mac80211_config_ops, priv_size); | |
1594 | ||
1595 | if (!wiphy) | |
1596 | return NULL; | |
1597 | ||
1598 | wiphy->privid = mac80211_wiphy_privid; | |
1599 | ||
1600 | local = wiphy_priv(wiphy); | |
1601 | local->hw.wiphy = wiphy; | |
1602 | ||
1603 | local->hw.priv = (char *)local + | |
1604 | ((sizeof(struct ieee80211_local) + | |
1605 | NETDEV_ALIGN_CONST) & ~NETDEV_ALIGN_CONST); | |
1606 | ||
4480f15c | 1607 | BUG_ON(!ops->tx); |
4150c572 JB |
1608 | BUG_ON(!ops->start); |
1609 | BUG_ON(!ops->stop); | |
4480f15c JB |
1610 | BUG_ON(!ops->config); |
1611 | BUG_ON(!ops->add_interface); | |
4150c572 JB |
1612 | BUG_ON(!ops->remove_interface); |
1613 | BUG_ON(!ops->configure_filter); | |
f0706e82 JB |
1614 | local->ops = ops; |
1615 | ||
f0706e82 JB |
1616 | local->hw.queues = 1; /* default */ |
1617 | ||
f0706e82 JB |
1618 | local->bridge_packets = 1; |
1619 | ||
1620 | local->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD; | |
1621 | local->fragmentation_threshold = IEEE80211_MAX_FRAG_THRESHOLD; | |
1622 | local->short_retry_limit = 7; | |
1623 | local->long_retry_limit = 4; | |
1624 | local->hw.conf.radio_enabled = 1; | |
f0706e82 | 1625 | |
79010420 | 1626 | INIT_LIST_HEAD(&local->interfaces); |
f0706e82 | 1627 | |
b16bd15c JB |
1628 | spin_lock_init(&local->key_lock); |
1629 | ||
f0706e82 | 1630 | INIT_DELAYED_WORK(&local->scan_work, ieee80211_sta_scan_work); |
f0706e82 JB |
1631 | |
1632 | sta_info_init(local); | |
1633 | ||
f0706e82 JB |
1634 | tasklet_init(&local->tx_pending_tasklet, ieee80211_tx_pending, |
1635 | (unsigned long)local); | |
1636 | tasklet_disable(&local->tx_pending_tasklet); | |
1637 | ||
1638 | tasklet_init(&local->tasklet, | |
1639 | ieee80211_tasklet_handler, | |
1640 | (unsigned long) local); | |
1641 | tasklet_disable(&local->tasklet); | |
1642 | ||
1643 | skb_queue_head_init(&local->skb_queue); | |
1644 | skb_queue_head_init(&local->skb_queue_unreliable); | |
1645 | ||
1646 | return local_to_hw(local); | |
1647 | } | |
1648 | EXPORT_SYMBOL(ieee80211_alloc_hw); | |
1649 | ||
1650 | int ieee80211_register_hw(struct ieee80211_hw *hw) | |
1651 | { | |
1652 | struct ieee80211_local *local = hw_to_local(hw); | |
1653 | const char *name; | |
1654 | int result; | |
8318d78a | 1655 | enum ieee80211_band band; |
96d51056 | 1656 | struct net_device *mdev; |
3e122be0 | 1657 | struct wireless_dev *mwdev; |
8318d78a JB |
1658 | |
1659 | /* | |
1660 | * generic code guarantees at least one band, | |
1661 | * set this very early because much code assumes | |
1662 | * that hw.conf.channel is assigned | |
1663 | */ | |
1664 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { | |
1665 | struct ieee80211_supported_band *sband; | |
1666 | ||
1667 | sband = local->hw.wiphy->bands[band]; | |
1668 | if (sband) { | |
1669 | /* init channel we're on */ | |
1670 | local->hw.conf.channel = | |
1671 | local->oper_channel = | |
1672 | local->scan_channel = &sband->channels[0]; | |
1673 | break; | |
1674 | } | |
1675 | } | |
f0706e82 JB |
1676 | |
1677 | result = wiphy_register(local->hw.wiphy); | |
1678 | if (result < 0) | |
1679 | return result; | |
1680 | ||
e2530083 JB |
1681 | /* |
1682 | * We use the number of queues for feature tests (QoS, HT) internally | |
1683 | * so restrict them appropriately. | |
1684 | */ | |
e2530083 JB |
1685 | if (hw->queues > IEEE80211_MAX_QUEUES) |
1686 | hw->queues = IEEE80211_MAX_QUEUES; | |
1687 | if (hw->ampdu_queues > IEEE80211_MAX_AMPDU_QUEUES) | |
1688 | hw->ampdu_queues = IEEE80211_MAX_AMPDU_QUEUES; | |
1689 | if (hw->queues < 4) | |
1690 | hw->ampdu_queues = 0; | |
e2530083 | 1691 | |
3e122be0 | 1692 | mdev = alloc_netdev_mq(sizeof(struct wireless_dev), |
e2530083 JB |
1693 | "wmaster%d", ether_setup, |
1694 | ieee80211_num_queues(hw)); | |
96d51056 JB |
1695 | if (!mdev) |
1696 | goto fail_mdev_alloc; | |
1697 | ||
3e122be0 JB |
1698 | mwdev = netdev_priv(mdev); |
1699 | mdev->ieee80211_ptr = mwdev; | |
1700 | mwdev->wiphy = local->hw.wiphy; | |
96d51056 JB |
1701 | |
1702 | local->mdev = mdev; | |
1703 | ||
3e122be0 | 1704 | ieee80211_rx_bss_list_init(local); |
96d51056 JB |
1705 | |
1706 | mdev->hard_start_xmit = ieee80211_master_start_xmit; | |
1707 | mdev->open = ieee80211_master_open; | |
1708 | mdev->stop = ieee80211_master_stop; | |
1709 | mdev->type = ARPHRD_IEEE80211; | |
1710 | mdev->header_ops = &ieee80211_header_ops; | |
1711 | mdev->set_multicast_list = ieee80211_master_set_multicast_list; | |
1712 | ||
f0706e82 | 1713 | name = wiphy_dev(local->hw.wiphy)->driver->name; |
59959a61 | 1714 | local->hw.workqueue = create_freezeable_workqueue(name); |
f0706e82 JB |
1715 | if (!local->hw.workqueue) { |
1716 | result = -ENOMEM; | |
1717 | goto fail_workqueue; | |
1718 | } | |
1719 | ||
b306f453 JB |
1720 | /* |
1721 | * The hardware needs headroom for sending the frame, | |
1722 | * and we need some headroom for passing the frame to monitor | |
1723 | * interfaces, but never both at the same time. | |
1724 | */ | |
33ccad35 JB |
1725 | local->tx_headroom = max_t(unsigned int , local->hw.extra_tx_headroom, |
1726 | sizeof(struct ieee80211_tx_status_rtap_hdr)); | |
b306f453 | 1727 | |
e9f207f0 JB |
1728 | debugfs_hw_add(local); |
1729 | ||
dc0ae30c TW |
1730 | if (local->hw.conf.beacon_int < 10) |
1731 | local->hw.conf.beacon_int = 100; | |
f0706e82 | 1732 | |
ea95bba4 TW |
1733 | if (local->hw.max_listen_interval == 0) |
1734 | local->hw.max_listen_interval = 1; | |
1735 | ||
1736 | local->hw.conf.listen_interval = local->hw.max_listen_interval; | |
1737 | ||
566bfe5a BR |
1738 | local->wstats_flags |= local->hw.flags & (IEEE80211_HW_SIGNAL_UNSPEC | |
1739 | IEEE80211_HW_SIGNAL_DB | | |
1740 | IEEE80211_HW_SIGNAL_DBM) ? | |
f0706e82 | 1741 | IW_QUAL_QUAL_UPDATED : IW_QUAL_QUAL_INVALID; |
566bfe5a | 1742 | local->wstats_flags |= local->hw.flags & IEEE80211_HW_NOISE_DBM ? |
f0706e82 | 1743 | IW_QUAL_NOISE_UPDATED : IW_QUAL_NOISE_INVALID; |
566bfe5a | 1744 | if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM) |
f0706e82 JB |
1745 | local->wstats_flags |= IW_QUAL_DBM; |
1746 | ||
1747 | result = sta_info_start(local); | |
1748 | if (result < 0) | |
1749 | goto fail_sta_info; | |
1750 | ||
1751 | rtnl_lock(); | |
1752 | result = dev_alloc_name(local->mdev, local->mdev->name); | |
1753 | if (result < 0) | |
1754 | goto fail_dev; | |
1755 | ||
1756 | memcpy(local->mdev->dev_addr, local->hw.wiphy->perm_addr, ETH_ALEN); | |
1757 | SET_NETDEV_DEV(local->mdev, wiphy_dev(local->hw.wiphy)); | |
1758 | ||
1759 | result = register_netdevice(local->mdev); | |
1760 | if (result < 0) | |
1761 | goto fail_dev; | |
1762 | ||
830f9038 JB |
1763 | result = ieee80211_init_rate_ctrl_alg(local, |
1764 | hw->rate_control_algorithm); | |
f0706e82 JB |
1765 | if (result < 0) { |
1766 | printk(KERN_DEBUG "%s: Failed to initialize rate control " | |
dd1cd4c6 | 1767 | "algorithm\n", wiphy_name(local->hw.wiphy)); |
f0706e82 JB |
1768 | goto fail_rate; |
1769 | } | |
1770 | ||
1771 | result = ieee80211_wep_init(local); | |
1772 | ||
1773 | if (result < 0) { | |
023a04be JF |
1774 | printk(KERN_DEBUG "%s: Failed to initialize wep: %d\n", |
1775 | wiphy_name(local->hw.wiphy), result); | |
f0706e82 JB |
1776 | goto fail_wep; |
1777 | } | |
1778 | ||
51cb6db0 | 1779 | local->mdev->select_queue = ieee80211_select_queue; |
f0706e82 JB |
1780 | |
1781 | /* add one default STA interface */ | |
3e122be0 | 1782 | result = ieee80211_if_add(local, "wlan%d", NULL, |
ee385855 | 1783 | IEEE80211_IF_TYPE_STA, NULL); |
f0706e82 JB |
1784 | if (result) |
1785 | printk(KERN_WARNING "%s: Failed to add default virtual iface\n", | |
dd1cd4c6 | 1786 | wiphy_name(local->hw.wiphy)); |
f0706e82 | 1787 | |
f0706e82 JB |
1788 | rtnl_unlock(); |
1789 | ||
1790 | ieee80211_led_init(local); | |
1791 | ||
1792 | return 0; | |
1793 | ||
1794 | fail_wep: | |
1795 | rate_control_deinitialize(local); | |
1796 | fail_rate: | |
1797 | unregister_netdevice(local->mdev); | |
339a7c41 | 1798 | local->mdev = NULL; |
f0706e82 JB |
1799 | fail_dev: |
1800 | rtnl_unlock(); | |
1801 | sta_info_stop(local); | |
1802 | fail_sta_info: | |
e9f207f0 | 1803 | debugfs_hw_del(local); |
f0706e82 JB |
1804 | destroy_workqueue(local->hw.workqueue); |
1805 | fail_workqueue: | |
3e122be0 JB |
1806 | if (local->mdev) |
1807 | free_netdev(local->mdev); | |
96d51056 | 1808 | fail_mdev_alloc: |
f0706e82 JB |
1809 | wiphy_unregister(local->hw.wiphy); |
1810 | return result; | |
1811 | } | |
1812 | EXPORT_SYMBOL(ieee80211_register_hw); | |
1813 | ||
f0706e82 JB |
1814 | void ieee80211_unregister_hw(struct ieee80211_hw *hw) |
1815 | { | |
1816 | struct ieee80211_local *local = hw_to_local(hw); | |
f0706e82 JB |
1817 | |
1818 | tasklet_kill(&local->tx_pending_tasklet); | |
1819 | tasklet_kill(&local->tasklet); | |
1820 | ||
1821 | rtnl_lock(); | |
1822 | ||
79010420 JB |
1823 | /* |
1824 | * At this point, interface list manipulations are fine | |
1825 | * because the driver cannot be handing us frames any | |
1826 | * more and the tasklet is killed. | |
1827 | */ | |
5b2812e9 | 1828 | |
75636525 JB |
1829 | /* First, we remove all virtual interfaces. */ |
1830 | ieee80211_remove_interfaces(local); | |
5b2812e9 JB |
1831 | |
1832 | /* then, finally, remove the master interface */ | |
3e122be0 | 1833 | unregister_netdevice(local->mdev); |
f0706e82 JB |
1834 | |
1835 | rtnl_unlock(); | |
1836 | ||
3e122be0 | 1837 | ieee80211_rx_bss_list_deinit(local); |
f0706e82 JB |
1838 | ieee80211_clear_tx_pending(local); |
1839 | sta_info_stop(local); | |
1840 | rate_control_deinitialize(local); | |
e9f207f0 | 1841 | debugfs_hw_del(local); |
f0706e82 | 1842 | |
f0706e82 JB |
1843 | if (skb_queue_len(&local->skb_queue) |
1844 | || skb_queue_len(&local->skb_queue_unreliable)) | |
1845 | printk(KERN_WARNING "%s: skb_queue not empty\n", | |
dd1cd4c6 | 1846 | wiphy_name(local->hw.wiphy)); |
f0706e82 JB |
1847 | skb_queue_purge(&local->skb_queue); |
1848 | skb_queue_purge(&local->skb_queue_unreliable); | |
1849 | ||
1850 | destroy_workqueue(local->hw.workqueue); | |
1851 | wiphy_unregister(local->hw.wiphy); | |
1852 | ieee80211_wep_free(local); | |
1853 | ieee80211_led_exit(local); | |
3e122be0 | 1854 | free_netdev(local->mdev); |
f0706e82 JB |
1855 | } |
1856 | EXPORT_SYMBOL(ieee80211_unregister_hw); | |
1857 | ||
1858 | void ieee80211_free_hw(struct ieee80211_hw *hw) | |
1859 | { | |
1860 | struct ieee80211_local *local = hw_to_local(hw); | |
1861 | ||
f0706e82 JB |
1862 | wiphy_free(local->hw.wiphy); |
1863 | } | |
1864 | EXPORT_SYMBOL(ieee80211_free_hw); | |
1865 | ||
f0706e82 JB |
1866 | static int __init ieee80211_init(void) |
1867 | { | |
1868 | struct sk_buff *skb; | |
1869 | int ret; | |
1870 | ||
e039fa4a JB |
1871 | BUILD_BUG_ON(sizeof(struct ieee80211_tx_info) > sizeof(skb->cb)); |
1872 | BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, driver_data) + | |
1873 | IEEE80211_TX_INFO_DRIVER_DATA_SIZE > sizeof(skb->cb)); | |
f0706e82 | 1874 | |
4b475898 | 1875 | ret = rc80211_pid_init(); |
ad018375 | 1876 | if (ret) |
51cb6db0 | 1877 | return ret; |
f0706e82 | 1878 | |
e9f207f0 JB |
1879 | ieee80211_debugfs_netdev_init(); |
1880 | ||
f0706e82 JB |
1881 | return 0; |
1882 | } | |
1883 | ||
f0706e82 JB |
1884 | static void __exit ieee80211_exit(void) |
1885 | { | |
4b475898 | 1886 | rc80211_pid_exit(); |
ac71c691 | 1887 | |
3b96766f JB |
1888 | /* |
1889 | * For key todo, it'll be empty by now but the work | |
1890 | * might still be scheduled. | |
1891 | */ | |
1892 | flush_scheduled_work(); | |
1893 | ||
f7a92144 LCC |
1894 | if (mesh_allocated) |
1895 | ieee80211s_stop(); | |
902acc78 | 1896 | |
e9f207f0 | 1897 | ieee80211_debugfs_netdev_exit(); |
f0706e82 JB |
1898 | } |
1899 | ||
1900 | ||
ca9938fe | 1901 | subsys_initcall(ieee80211_init); |
f0706e82 JB |
1902 | module_exit(ieee80211_exit); |
1903 | ||
1904 | MODULE_DESCRIPTION("IEEE 802.11 subsystem"); | |
1905 | MODULE_LICENSE("GPL"); |