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Commit | Line | Data |
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f0706e82 JB |
1 | /* |
2 | * Copyright 2002-2005, Instant802 Networks, Inc. | |
3 | * Copyright 2005-2006, Devicescape Software, Inc. | |
4 | * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License version 2 as | |
8 | * published by the Free Software Foundation. | |
9 | */ | |
10 | ||
11 | #include <net/mac80211.h> | |
12 | #include <net/ieee80211_radiotap.h> | |
13 | #include <linux/module.h> | |
14 | #include <linux/init.h> | |
15 | #include <linux/netdevice.h> | |
16 | #include <linux/types.h> | |
17 | #include <linux/slab.h> | |
18 | #include <linux/skbuff.h> | |
19 | #include <linux/etherdevice.h> | |
20 | #include <linux/if_arp.h> | |
21 | #include <linux/wireless.h> | |
22 | #include <linux/rtnetlink.h> | |
f0706e82 | 23 | #include <linux/bitmap.h> |
881d966b | 24 | #include <net/net_namespace.h> |
f0706e82 JB |
25 | #include <net/cfg80211.h> |
26 | ||
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 | 254 | case IEEE80211_IF_TYPE_MESH_POINT: |
472dbc45 JB |
255 | if (!ieee80211_vif_is_mesh(&sdata->vif)) |
256 | break; | |
8dbc1722 LCC |
257 | /* mesh ifaces must set allmulti to forward mcast traffic */ |
258 | atomic_inc(&local->iff_allmultis); | |
259 | break; | |
fb1c1cd6 JB |
260 | case IEEE80211_IF_TYPE_STA: |
261 | case IEEE80211_IF_TYPE_MNTR: | |
262 | case IEEE80211_IF_TYPE_IBSS: | |
263 | /* no special treatment */ | |
264 | break; | |
a2897552 JB |
265 | case IEEE80211_IF_TYPE_INVALID: |
266 | /* cannot happen */ | |
267 | WARN_ON(1); | |
268 | break; | |
0ec3ca44 | 269 | } |
f0706e82 | 270 | |
b2c258fb JB |
271 | if (local->open_count == 0) { |
272 | res = 0; | |
4150c572 JB |
273 | if (local->ops->start) |
274 | res = local->ops->start(local_to_hw(local)); | |
275 | if (res) | |
3e122be0 | 276 | goto err_del_bss; |
ceffefd1 | 277 | need_hw_reconfig = 1; |
cdcb006f | 278 | ieee80211_led_radio(local, local->hw.conf.radio_enabled); |
b2c258fb | 279 | } |
f0706e82 | 280 | |
bdbe8195 LCC |
281 | /* |
282 | * Check all interfaces and copy the hopefully now-present | |
283 | * MAC address to those that have the special null one. | |
284 | */ | |
285 | list_for_each_entry(nsdata, &local->interfaces, list) { | |
286 | struct net_device *ndev = nsdata->dev; | |
287 | ||
288 | /* | |
289 | * No need to check netif_running since we do not allow | |
290 | * it to start up with this invalid address. | |
291 | */ | |
292 | if (compare_ether_addr(null_addr, ndev->dev_addr) == 0) | |
293 | memcpy(ndev->dev_addr, | |
294 | local->hw.wiphy->perm_addr, | |
295 | ETH_ALEN); | |
296 | } | |
297 | ||
298 | if (compare_ether_addr(null_addr, local->mdev->dev_addr) == 0) | |
299 | memcpy(local->mdev->dev_addr, local->hw.wiphy->perm_addr, | |
300 | ETH_ALEN); | |
301 | ||
302 | /* | |
303 | * Validate the MAC address for this device. | |
304 | */ | |
305 | if (!is_valid_ether_addr(dev->dev_addr)) { | |
306 | if (!local->open_count && local->ops->stop) | |
307 | local->ops->stop(local_to_hw(local)); | |
308 | return -EADDRNOTAVAIL; | |
309 | } | |
310 | ||
51fb61e7 | 311 | switch (sdata->vif.type) { |
0ec3ca44 | 312 | case IEEE80211_IF_TYPE_VLAN: |
0ec3ca44 JB |
313 | /* no need to tell driver */ |
314 | break; | |
4150c572 | 315 | case IEEE80211_IF_TYPE_MNTR: |
3d30d949 MW |
316 | if (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES) { |
317 | local->cooked_mntrs++; | |
318 | break; | |
319 | } | |
320 | ||
4150c572 | 321 | /* must be before the call to ieee80211_configure_filter */ |
b2c258fb | 322 | local->monitors++; |
8cc9a739 | 323 | if (local->monitors == 1) |
4150c572 | 324 | local->hw.conf.flags |= IEEE80211_CONF_RADIOTAP; |
8cc9a739 MW |
325 | |
326 | if (sdata->u.mntr_flags & MONITOR_FLAG_FCSFAIL) | |
327 | local->fif_fcsfail++; | |
328 | if (sdata->u.mntr_flags & MONITOR_FLAG_PLCPFAIL) | |
329 | local->fif_plcpfail++; | |
330 | if (sdata->u.mntr_flags & MONITOR_FLAG_CONTROL) | |
331 | local->fif_control++; | |
332 | if (sdata->u.mntr_flags & MONITOR_FLAG_OTHER_BSS) | |
333 | local->fif_other_bss++; | |
334 | ||
b9e40857 | 335 | netif_addr_lock_bh(local->mdev); |
8cc9a739 | 336 | ieee80211_configure_filter(local); |
b9e40857 | 337 | netif_addr_unlock_bh(local->mdev); |
4150c572 JB |
338 | break; |
339 | case IEEE80211_IF_TYPE_STA: | |
340 | case IEEE80211_IF_TYPE_IBSS: | |
341 | sdata->u.sta.flags &= ~IEEE80211_STA_PREV_BSSID_SET; | |
342 | /* fall through */ | |
343 | default: | |
32bfd35d | 344 | conf.vif = &sdata->vif; |
51fb61e7 | 345 | conf.type = sdata->vif.type; |
4150c572 JB |
346 | conf.mac_addr = dev->dev_addr; |
347 | res = local->ops->add_interface(local_to_hw(local), &conf); | |
4150c572 | 348 | if (res) |
636c5d48 | 349 | goto err_stop; |
4150c572 | 350 | |
9d139c81 | 351 | if (ieee80211_vif_is_mesh(&sdata->vif)) |
f698d856 JBG |
352 | ieee80211_start_mesh(sdata); |
353 | changed |= ieee80211_reset_erp_info(sdata); | |
fc32f924 | 354 | ieee80211_bss_info_change_notify(sdata, changed); |
11a843b7 | 355 | ieee80211_enable_keys(sdata); |
4150c572 | 356 | |
51fb61e7 | 357 | if (sdata->vif.type == IEEE80211_IF_TYPE_STA && |
ddd3d2be | 358 | !(sdata->flags & IEEE80211_SDATA_USERSPACE_MLME)) |
4150c572 JB |
359 | netif_carrier_off(dev); |
360 | else | |
361 | netif_carrier_on(dev); | |
d9430a32 | 362 | } |
f0706e82 | 363 | |
636c5d48 JB |
364 | if (sdata->vif.type == IEEE80211_IF_TYPE_WDS) { |
365 | /* Create STA entry for the WDS peer */ | |
366 | sta = sta_info_alloc(sdata, sdata->u.wds.remote_addr, | |
367 | GFP_KERNEL); | |
368 | if (!sta) { | |
369 | res = -ENOMEM; | |
370 | goto err_del_interface; | |
371 | } | |
372 | ||
07346f81 | 373 | /* no locking required since STA is not live yet */ |
636c5d48 JB |
374 | sta->flags |= WLAN_STA_AUTHORIZED; |
375 | ||
376 | res = sta_info_insert(sta); | |
377 | if (res) { | |
378 | /* STA has been freed */ | |
379 | goto err_del_interface; | |
380 | } | |
381 | } | |
382 | ||
4150c572 JB |
383 | if (local->open_count == 0) { |
384 | res = dev_open(local->mdev); | |
385 | WARN_ON(res); | |
636c5d48 JB |
386 | if (res) |
387 | goto err_del_interface; | |
4150c572 JB |
388 | tasklet_enable(&local->tx_pending_tasklet); |
389 | tasklet_enable(&local->tasklet); | |
390 | } | |
391 | ||
c1428b3f JB |
392 | /* |
393 | * set_multicast_list will be invoked by the networking core | |
394 | * which will check whether any increments here were done in | |
395 | * error and sync them down to the hardware as filter flags. | |
396 | */ | |
397 | if (sdata->flags & IEEE80211_SDATA_ALLMULTI) | |
398 | atomic_inc(&local->iff_allmultis); | |
399 | ||
400 | if (sdata->flags & IEEE80211_SDATA_PROMISC) | |
401 | atomic_inc(&local->iff_promiscs); | |
402 | ||
4150c572 | 403 | local->open_count++; |
5825fe10 | 404 | if (need_hw_reconfig) { |
ceffefd1 | 405 | ieee80211_hw_config(local); |
5825fe10 JB |
406 | /* |
407 | * set default queue parameters so drivers don't | |
408 | * need to initialise the hardware if the hardware | |
409 | * doesn't start up with sane defaults | |
410 | */ | |
411 | ieee80211_set_wmm_default(sdata); | |
412 | } | |
f0706e82 | 413 | |
64f851e4 JN |
414 | /* |
415 | * ieee80211_sta_work is disabled while network interface | |
416 | * is down. Therefore, some configuration changes may not | |
417 | * yet be effective. Trigger execution of ieee80211_sta_work | |
418 | * to fix this. | |
419 | */ | |
988c0f72 JB |
420 | if (sdata->vif.type == IEEE80211_IF_TYPE_STA || |
421 | sdata->vif.type == IEEE80211_IF_TYPE_IBSS) { | |
64f851e4 JN |
422 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; |
423 | queue_work(local->hw.workqueue, &ifsta->work); | |
424 | } | |
425 | ||
51cb6db0 | 426 | netif_tx_start_all_queues(dev); |
4150c572 | 427 | |
b2c258fb | 428 | return 0; |
636c5d48 JB |
429 | err_del_interface: |
430 | local->ops->remove_interface(local_to_hw(local), &conf); | |
431 | err_stop: | |
432 | if (!local->open_count && local->ops->stop) | |
433 | local->ops->stop(local_to_hw(local)); | |
3e122be0 JB |
434 | err_del_bss: |
435 | sdata->bss = NULL; | |
436 | if (sdata->vif.type == IEEE80211_IF_TYPE_VLAN) | |
437 | list_del(&sdata->u.vlan.list); | |
636c5d48 | 438 | return res; |
f0706e82 | 439 | } |
f0706e82 | 440 | |
4150c572 | 441 | static int ieee80211_stop(struct net_device *dev) |
f0706e82 | 442 | { |
44213b5e JB |
443 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
444 | struct ieee80211_local *local = sdata->local; | |
4150c572 | 445 | struct ieee80211_if_init_conf conf; |
07db2183 | 446 | struct sta_info *sta; |
4150c572 | 447 | |
44213b5e JB |
448 | /* |
449 | * Stop TX on this interface first. | |
450 | */ | |
51cb6db0 | 451 | netif_tx_stop_all_queues(dev); |
4150c572 | 452 | |
44213b5e JB |
453 | /* |
454 | * Now delete all active aggregation sessions. | |
455 | */ | |
d0709a65 JB |
456 | rcu_read_lock(); |
457 | ||
458 | list_for_each_entry_rcu(sta, &local->sta_list, list) { | |
459 | if (sta->sdata == sdata) | |
f698d856 | 460 | ieee80211_sta_tear_down_BA_sessions(sdata, sta->addr); |
07db2183 RR |
461 | } |
462 | ||
d0709a65 JB |
463 | rcu_read_unlock(); |
464 | ||
44213b5e JB |
465 | /* |
466 | * Remove all stations associated with this interface. | |
467 | * | |
468 | * This must be done before calling ops->remove_interface() | |
469 | * because otherwise we can later invoke ops->sta_notify() | |
470 | * whenever the STAs are removed, and that invalidates driver | |
471 | * assumptions about always getting a vif pointer that is valid | |
472 | * (because if we remove a STA after ops->remove_interface() | |
473 | * the driver will have removed the vif info already!) | |
474 | * | |
475 | * We could relax this and only unlink the stations from the | |
476 | * hash table and list but keep them on a per-sdata list that | |
477 | * will be inserted back again when the interface is brought | |
478 | * up again, but I don't currently see a use case for that, | |
479 | * except with WDS which gets a STA entry created when it is | |
480 | * brought up. | |
481 | */ | |
482 | sta_info_flush(local, sdata); | |
4150c572 | 483 | |
c1428b3f JB |
484 | /* |
485 | * Don't count this interface for promisc/allmulti while it | |
486 | * is down. dev_mc_unsync() will invoke set_multicast_list | |
487 | * on the master interface which will sync these down to the | |
488 | * hardware as filter flags. | |
489 | */ | |
490 | if (sdata->flags & IEEE80211_SDATA_ALLMULTI) | |
491 | atomic_dec(&local->iff_allmultis); | |
492 | ||
493 | if (sdata->flags & IEEE80211_SDATA_PROMISC) | |
494 | atomic_dec(&local->iff_promiscs); | |
495 | ||
4150c572 JB |
496 | dev_mc_unsync(local->mdev, dev); |
497 | ||
5dfdaf58 | 498 | /* APs need special treatment */ |
51fb61e7 | 499 | if (sdata->vif.type == IEEE80211_IF_TYPE_AP) { |
0ec3ca44 | 500 | struct ieee80211_sub_if_data *vlan, *tmp; |
5dfdaf58 | 501 | struct beacon_data *old_beacon = sdata->u.ap.beacon; |
0ec3ca44 | 502 | |
5dfdaf58 JB |
503 | /* remove beacon */ |
504 | rcu_assign_pointer(sdata->u.ap.beacon, NULL); | |
505 | synchronize_rcu(); | |
506 | kfree(old_beacon); | |
507 | ||
508 | /* down all dependent devices, that is VLANs */ | |
0ec3ca44 JB |
509 | list_for_each_entry_safe(vlan, tmp, &sdata->u.ap.vlans, |
510 | u.vlan.list) | |
511 | dev_close(vlan->dev); | |
512 | WARN_ON(!list_empty(&sdata->u.ap.vlans)); | |
513 | } | |
514 | ||
4150c572 | 515 | local->open_count--; |
f0706e82 | 516 | |
51fb61e7 | 517 | switch (sdata->vif.type) { |
0ec3ca44 JB |
518 | case IEEE80211_IF_TYPE_VLAN: |
519 | list_del(&sdata->u.vlan.list); | |
0ec3ca44 JB |
520 | /* no need to tell driver */ |
521 | break; | |
4150c572 | 522 | case IEEE80211_IF_TYPE_MNTR: |
3d30d949 MW |
523 | if (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES) { |
524 | local->cooked_mntrs--; | |
525 | break; | |
526 | } | |
527 | ||
4150c572 | 528 | local->monitors--; |
8cc9a739 | 529 | if (local->monitors == 0) |
8b393f1d | 530 | local->hw.conf.flags &= ~IEEE80211_CONF_RADIOTAP; |
8cc9a739 MW |
531 | |
532 | if (sdata->u.mntr_flags & MONITOR_FLAG_FCSFAIL) | |
533 | local->fif_fcsfail--; | |
534 | if (sdata->u.mntr_flags & MONITOR_FLAG_PLCPFAIL) | |
535 | local->fif_plcpfail--; | |
536 | if (sdata->u.mntr_flags & MONITOR_FLAG_CONTROL) | |
537 | local->fif_control--; | |
538 | if (sdata->u.mntr_flags & MONITOR_FLAG_OTHER_BSS) | |
539 | local->fif_other_bss--; | |
540 | ||
b9e40857 | 541 | netif_addr_lock_bh(local->mdev); |
8cc9a739 | 542 | ieee80211_configure_filter(local); |
b9e40857 | 543 | netif_addr_unlock_bh(local->mdev); |
4150c572 | 544 | break; |
b2c258fb JB |
545 | case IEEE80211_IF_TYPE_STA: |
546 | case IEEE80211_IF_TYPE_IBSS: | |
48c2fc59 | 547 | sdata->u.sta.state = IEEE80211_STA_MLME_DISABLED; |
ad81b2f9 | 548 | memset(sdata->u.sta.bssid, 0, ETH_ALEN); |
b2c258fb | 549 | del_timer_sync(&sdata->u.sta.timer); |
b7413430 JB |
550 | /* |
551 | * If the timer fired while we waited for it, it will have | |
552 | * requeued the work. Now the work will be running again | |
553 | * but will not rearm the timer again because it checks | |
554 | * whether the interface is running, which, at this point, | |
555 | * it no longer is. | |
556 | */ | |
557 | cancel_work_sync(&sdata->u.sta.work); | |
2a8a9a88 | 558 | /* |
79010420 JB |
559 | * When we get here, the interface is marked down. |
560 | * Call synchronize_rcu() to wait for the RX path | |
561 | * should it be using the interface and enqueuing | |
562 | * frames at this very time on another CPU. | |
2a8a9a88 | 563 | */ |
79010420 | 564 | synchronize_rcu(); |
b2c258fb | 565 | skb_queue_purge(&sdata->u.sta.skb_queue); |
2a8a9a88 | 566 | |
a10605e5 ZY |
567 | sdata->u.sta.flags &= ~IEEE80211_STA_PRIVACY_INVOKED; |
568 | kfree(sdata->u.sta.extra_ie); | |
569 | sdata->u.sta.extra_ie = NULL; | |
570 | sdata->u.sta.extra_ie_len = 0; | |
4150c572 | 571 | /* fall through */ |
472dbc45 JB |
572 | case IEEE80211_IF_TYPE_MESH_POINT: |
573 | if (ieee80211_vif_is_mesh(&sdata->vif)) { | |
574 | /* allmulti is always set on mesh ifaces */ | |
575 | atomic_dec(&local->iff_allmultis); | |
576 | ieee80211_stop_mesh(sdata); | |
577 | } | |
578 | /* fall through */ | |
4150c572 | 579 | default: |
5bc75728 JB |
580 | if (local->scan_sdata == sdata) { |
581 | if (!local->ops->hw_scan) | |
582 | cancel_delayed_work_sync(&local->scan_work); | |
583 | /* | |
584 | * The software scan can no longer run now, so we can | |
585 | * clear out the scan_sdata reference. However, the | |
586 | * hardware scan may still be running. The complete | |
587 | * function must be prepared to handle a NULL value. | |
588 | */ | |
589 | local->scan_sdata = NULL; | |
590 | /* | |
591 | * The memory barrier guarantees that another CPU | |
592 | * that is hardware-scanning will now see the fact | |
593 | * that this interface is gone. | |
594 | */ | |
595 | smp_mb(); | |
596 | /* | |
597 | * If software scanning, complete the scan but since | |
598 | * the scan_sdata is NULL already don't send out a | |
599 | * scan event to userspace -- the scan is incomplete. | |
600 | */ | |
601 | if (local->sta_sw_scanning) | |
602 | ieee80211_scan_completed(&local->hw); | |
603 | } | |
604 | ||
32bfd35d | 605 | conf.vif = &sdata->vif; |
51fb61e7 | 606 | conf.type = sdata->vif.type; |
4150c572 | 607 | conf.mac_addr = dev->dev_addr; |
11a843b7 JB |
608 | /* disable all keys for as long as this netdev is down */ |
609 | ieee80211_disable_keys(sdata); | |
4150c572 | 610 | local->ops->remove_interface(local_to_hw(local), &conf); |
f0706e82 JB |
611 | } |
612 | ||
3e122be0 JB |
613 | sdata->bss = NULL; |
614 | ||
b2c258fb JB |
615 | if (local->open_count == 0) { |
616 | if (netif_running(local->mdev)) | |
617 | dev_close(local->mdev); | |
4150c572 | 618 | |
b2c258fb JB |
619 | if (local->ops->stop) |
620 | local->ops->stop(local_to_hw(local)); | |
4150c572 | 621 | |
cdcb006f ID |
622 | ieee80211_led_radio(local, 0); |
623 | ||
ea0c9253 ID |
624 | flush_workqueue(local->hw.workqueue); |
625 | ||
b2c258fb JB |
626 | tasklet_disable(&local->tx_pending_tasklet); |
627 | tasklet_disable(&local->tasklet); | |
628 | } | |
b2c258fb | 629 | |
f0706e82 JB |
630 | return 0; |
631 | } | |
632 | ||
f0706e82 JB |
633 | static void ieee80211_set_multicast_list(struct net_device *dev) |
634 | { | |
635 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
636 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
4150c572 | 637 | int allmulti, promisc, sdata_allmulti, sdata_promisc; |
f0706e82 | 638 | |
4150c572 JB |
639 | allmulti = !!(dev->flags & IFF_ALLMULTI); |
640 | promisc = !!(dev->flags & IFF_PROMISC); | |
b52f2198 JB |
641 | sdata_allmulti = !!(sdata->flags & IEEE80211_SDATA_ALLMULTI); |
642 | sdata_promisc = !!(sdata->flags & IEEE80211_SDATA_PROMISC); | |
4150c572 JB |
643 | |
644 | if (allmulti != sdata_allmulti) { | |
645 | if (dev->flags & IFF_ALLMULTI) | |
53918994 | 646 | atomic_inc(&local->iff_allmultis); |
4150c572 | 647 | else |
53918994 | 648 | atomic_dec(&local->iff_allmultis); |
13262ffd | 649 | sdata->flags ^= IEEE80211_SDATA_ALLMULTI; |
f0706e82 | 650 | } |
4150c572 JB |
651 | |
652 | if (promisc != sdata_promisc) { | |
653 | if (dev->flags & IFF_PROMISC) | |
53918994 | 654 | atomic_inc(&local->iff_promiscs); |
4150c572 | 655 | else |
53918994 | 656 | atomic_dec(&local->iff_promiscs); |
13262ffd | 657 | sdata->flags ^= IEEE80211_SDATA_PROMISC; |
f0706e82 | 658 | } |
4150c572 JB |
659 | |
660 | dev_mc_sync(local->mdev, dev); | |
f0706e82 JB |
661 | } |
662 | ||
3b04ddde SH |
663 | static const struct header_ops ieee80211_header_ops = { |
664 | .create = eth_header, | |
665 | .parse = header_parse_80211, | |
666 | .rebuild = eth_rebuild_header, | |
667 | .cache = eth_header_cache, | |
668 | .cache_update = eth_header_cache_update, | |
669 | }; | |
670 | ||
b2c258fb | 671 | void ieee80211_if_setup(struct net_device *dev) |
f0706e82 | 672 | { |
b2c258fb JB |
673 | ether_setup(dev); |
674 | dev->hard_start_xmit = ieee80211_subif_start_xmit; | |
675 | dev->wireless_handlers = &ieee80211_iw_handler_def; | |
676 | dev->set_multicast_list = ieee80211_set_multicast_list; | |
677 | dev->change_mtu = ieee80211_change_mtu; | |
b2c258fb JB |
678 | dev->open = ieee80211_open; |
679 | dev->stop = ieee80211_stop; | |
75636525 | 680 | dev->destructor = free_netdev; |
bdbe8195 LCC |
681 | /* we will validate the address ourselves in ->open */ |
682 | dev->validate_addr = NULL; | |
b2c258fb | 683 | } |
f0706e82 | 684 | |
b2c258fb JB |
685 | /* everything else */ |
686 | ||
9d139c81 | 687 | int ieee80211_if_config(struct ieee80211_sub_if_data *sdata, u32 changed) |
b2c258fb | 688 | { |
9d139c81 | 689 | struct ieee80211_local *local = sdata->local; |
b2c258fb | 690 | struct ieee80211_if_conf conf; |
b2c258fb | 691 | |
9d139c81 JB |
692 | if (WARN_ON(!netif_running(sdata->dev))) |
693 | return 0; | |
694 | ||
695 | if (!local->ops->config_interface) | |
f0706e82 | 696 | return 0; |
f0706e82 | 697 | |
b2c258fb | 698 | memset(&conf, 0, sizeof(conf)); |
9d139c81 JB |
699 | conf.changed = changed; |
700 | ||
51fb61e7 JB |
701 | if (sdata->vif.type == IEEE80211_IF_TYPE_STA || |
702 | sdata->vif.type == IEEE80211_IF_TYPE_IBSS) { | |
4150c572 | 703 | conf.bssid = sdata->u.sta.bssid; |
b2c258fb JB |
704 | conf.ssid = sdata->u.sta.ssid; |
705 | conf.ssid_len = sdata->u.sta.ssid_len; | |
51fb61e7 | 706 | } else if (sdata->vif.type == IEEE80211_IF_TYPE_AP) { |
9d139c81 | 707 | conf.bssid = sdata->dev->dev_addr; |
b2c258fb JB |
708 | conf.ssid = sdata->u.ap.ssid; |
709 | conf.ssid_len = sdata->u.ap.ssid_len; | |
9d139c81 JB |
710 | } else if (ieee80211_vif_is_mesh(&sdata->vif)) { |
711 | u8 zero[ETH_ALEN] = { 0 }; | |
712 | conf.bssid = zero; | |
713 | conf.ssid = zero; | |
714 | conf.ssid_len = 0; | |
715 | } else { | |
716 | WARN_ON(1); | |
717 | return -EINVAL; | |
f0706e82 | 718 | } |
f0706e82 | 719 | |
9d139c81 JB |
720 | if (WARN_ON(!conf.bssid && (changed & IEEE80211_IFCC_BSSID))) |
721 | return -EINVAL; | |
f0706e82 | 722 | |
9d139c81 JB |
723 | if (WARN_ON(!conf.ssid && (changed & IEEE80211_IFCC_SSID))) |
724 | return -EINVAL; | |
f0706e82 | 725 | |
9d139c81 JB |
726 | return local->ops->config_interface(local_to_hw(local), |
727 | &sdata->vif, &conf); | |
b2c258fb | 728 | } |
f0706e82 | 729 | |
b2c258fb JB |
730 | int ieee80211_hw_config(struct ieee80211_local *local) |
731 | { | |
b2c258fb JB |
732 | struct ieee80211_channel *chan; |
733 | int ret = 0; | |
f0706e82 | 734 | |
8318d78a | 735 | if (local->sta_sw_scanning) |
b2c258fb | 736 | chan = local->scan_channel; |
8318d78a | 737 | else |
b2c258fb | 738 | chan = local->oper_channel; |
f0706e82 | 739 | |
8318d78a JB |
740 | local->hw.conf.channel = chan; |
741 | ||
742 | if (!local->hw.conf.power_level) | |
743 | local->hw.conf.power_level = chan->max_power; | |
744 | else | |
745 | local->hw.conf.power_level = min(chan->max_power, | |
746 | local->hw.conf.power_level); | |
747 | ||
748 | local->hw.conf.max_antenna_gain = chan->max_antenna_gain; | |
f0706e82 | 749 | |
b2c258fb | 750 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
8318d78a JB |
751 | printk(KERN_DEBUG "%s: HW CONFIG: freq=%d\n", |
752 | wiphy_name(local->hw.wiphy), chan->center_freq); | |
753 | #endif | |
b2c258fb | 754 | |
f7c4daed | 755 | if (local->open_count) |
b2c258fb | 756 | ret = local->ops->config(local_to_hw(local), &local->hw.conf); |
f0706e82 | 757 | |
b2c258fb JB |
758 | return ret; |
759 | } | |
f0706e82 | 760 | |
d3c990fb | 761 | /** |
38668c05 TW |
762 | * ieee80211_handle_ht should be used only after legacy configuration |
763 | * has been determined namely band, as ht configuration depends upon | |
764 | * the hardware's HT abilities for a _specific_ band. | |
d3c990fb | 765 | */ |
38668c05 | 766 | u32 ieee80211_handle_ht(struct ieee80211_local *local, int enable_ht, |
d3c990fb RR |
767 | struct ieee80211_ht_info *req_ht_cap, |
768 | struct ieee80211_ht_bss_info *req_bss_cap) | |
769 | { | |
770 | struct ieee80211_conf *conf = &local->hw.conf; | |
8318d78a | 771 | struct ieee80211_supported_band *sband; |
38668c05 TW |
772 | struct ieee80211_ht_info ht_conf; |
773 | struct ieee80211_ht_bss_info ht_bss_conf; | |
38668c05 | 774 | u32 changed = 0; |
edcdf8b2 RR |
775 | int i; |
776 | u8 max_tx_streams = IEEE80211_HT_CAP_MAX_STREAMS; | |
777 | u8 tx_mcs_set_cap; | |
d3c990fb | 778 | |
8318d78a JB |
779 | sband = local->hw.wiphy->bands[conf->channel->band]; |
780 | ||
edcdf8b2 RR |
781 | memset(&ht_conf, 0, sizeof(struct ieee80211_ht_info)); |
782 | memset(&ht_bss_conf, 0, sizeof(struct ieee80211_ht_bss_info)); | |
783 | ||
d3c990fb | 784 | /* HT is not supported */ |
8318d78a | 785 | if (!sband->ht_info.ht_supported) { |
d3c990fb | 786 | conf->flags &= ~IEEE80211_CONF_SUPPORT_HT_MODE; |
edcdf8b2 | 787 | goto out; |
d3c990fb RR |
788 | } |
789 | ||
edcdf8b2 RR |
790 | /* disable HT */ |
791 | if (!enable_ht) { | |
792 | if (conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE) | |
38668c05 | 793 | changed |= BSS_CHANGED_HT; |
edcdf8b2 RR |
794 | conf->flags &= ~IEEE80211_CONF_SUPPORT_HT_MODE; |
795 | conf->ht_conf.ht_supported = 0; | |
796 | goto out; | |
797 | } | |
38668c05 | 798 | |
38668c05 | 799 | |
edcdf8b2 RR |
800 | if (!(conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE)) |
801 | changed |= BSS_CHANGED_HT; | |
38668c05 | 802 | |
edcdf8b2 RR |
803 | conf->flags |= IEEE80211_CONF_SUPPORT_HT_MODE; |
804 | ht_conf.ht_supported = 1; | |
38668c05 | 805 | |
edcdf8b2 | 806 | ht_conf.cap = req_ht_cap->cap & sband->ht_info.cap; |
00c5ae2f TW |
807 | ht_conf.cap &= ~(IEEE80211_HT_CAP_SM_PS); |
808 | ht_conf.cap |= sband->ht_info.cap & IEEE80211_HT_CAP_SM_PS; | |
edcdf8b2 RR |
809 | ht_bss_conf.primary_channel = req_bss_cap->primary_channel; |
810 | ht_bss_conf.bss_cap = req_bss_cap->bss_cap; | |
811 | ht_bss_conf.bss_op_mode = req_bss_cap->bss_op_mode; | |
38668c05 | 812 | |
edcdf8b2 RR |
813 | ht_conf.ampdu_factor = req_ht_cap->ampdu_factor; |
814 | ht_conf.ampdu_density = req_ht_cap->ampdu_density; | |
38668c05 | 815 | |
edcdf8b2 RR |
816 | /* Bits 96-100 */ |
817 | tx_mcs_set_cap = sband->ht_info.supp_mcs_set[12]; | |
818 | ||
819 | /* configure suppoerted Tx MCS according to requested MCS | |
820 | * (based in most cases on Rx capabilities of peer) and self | |
821 | * Tx MCS capabilities (as defined by low level driver HW | |
822 | * Tx capabilities) */ | |
823 | if (!(tx_mcs_set_cap & IEEE80211_HT_CAP_MCS_TX_DEFINED)) | |
824 | goto check_changed; | |
d3c990fb | 825 | |
edcdf8b2 RR |
826 | /* Counting from 0 therfore + 1 */ |
827 | if (tx_mcs_set_cap & IEEE80211_HT_CAP_MCS_TX_RX_DIFF) | |
828 | max_tx_streams = ((tx_mcs_set_cap & | |
829 | IEEE80211_HT_CAP_MCS_TX_STREAMS) >> 2) + 1; | |
830 | ||
831 | for (i = 0; i < max_tx_streams; i++) | |
832 | ht_conf.supp_mcs_set[i] = | |
833 | sband->ht_info.supp_mcs_set[i] & | |
834 | req_ht_cap->supp_mcs_set[i]; | |
835 | ||
836 | if (tx_mcs_set_cap & IEEE80211_HT_CAP_MCS_TX_UEQM) | |
837 | for (i = IEEE80211_SUPP_MCS_SET_UEQM; | |
838 | i < IEEE80211_SUPP_MCS_SET_LEN; i++) | |
839 | ht_conf.supp_mcs_set[i] = | |
840 | sband->ht_info.supp_mcs_set[i] & | |
841 | req_ht_cap->supp_mcs_set[i]; | |
842 | ||
843 | check_changed: | |
844 | /* if bss configuration changed store the new one */ | |
845 | if (memcmp(&conf->ht_conf, &ht_conf, sizeof(ht_conf)) || | |
846 | memcmp(&conf->ht_bss_conf, &ht_bss_conf, sizeof(ht_bss_conf))) { | |
847 | changed |= BSS_CHANGED_HT; | |
848 | memcpy(&conf->ht_conf, &ht_conf, sizeof(ht_conf)); | |
849 | memcpy(&conf->ht_bss_conf, &ht_bss_conf, sizeof(ht_bss_conf)); | |
850 | } | |
851 | out: | |
38668c05 | 852 | return changed; |
d3c990fb RR |
853 | } |
854 | ||
471b3efd JB |
855 | void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, |
856 | u32 changed) | |
d9430a32 | 857 | { |
471b3efd JB |
858 | struct ieee80211_local *local = sdata->local; |
859 | ||
860 | if (!changed) | |
861 | return; | |
862 | ||
863 | if (local->ops->bss_info_changed) | |
864 | local->ops->bss_info_changed(local_to_hw(local), | |
865 | &sdata->vif, | |
866 | &sdata->bss_conf, | |
867 | changed); | |
d9430a32 DD |
868 | } |
869 | ||
f698d856 | 870 | u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata) |
d9430a32 | 871 | { |
471b3efd JB |
872 | sdata->bss_conf.use_cts_prot = 0; |
873 | sdata->bss_conf.use_short_preamble = 0; | |
fc32f924 | 874 | return BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_ERP_PREAMBLE; |
d9430a32 DD |
875 | } |
876 | ||
f0706e82 | 877 | void ieee80211_tx_status_irqsafe(struct ieee80211_hw *hw, |
e039fa4a | 878 | struct sk_buff *skb) |
f0706e82 JB |
879 | { |
880 | struct ieee80211_local *local = hw_to_local(hw); | |
e039fa4a | 881 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
f0706e82 JB |
882 | int tmp; |
883 | ||
884 | skb->dev = local->mdev; | |
f0706e82 | 885 | skb->pkt_type = IEEE80211_TX_STATUS_MSG; |
e039fa4a | 886 | skb_queue_tail(info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS ? |
f0706e82 JB |
887 | &local->skb_queue : &local->skb_queue_unreliable, skb); |
888 | tmp = skb_queue_len(&local->skb_queue) + | |
889 | skb_queue_len(&local->skb_queue_unreliable); | |
890 | while (tmp > IEEE80211_IRQSAFE_QUEUE_LIMIT && | |
891 | (skb = skb_dequeue(&local->skb_queue_unreliable))) { | |
f0706e82 JB |
892 | dev_kfree_skb_irq(skb); |
893 | tmp--; | |
894 | I802_DEBUG_INC(local->tx_status_drop); | |
895 | } | |
896 | tasklet_schedule(&local->tasklet); | |
897 | } | |
898 | EXPORT_SYMBOL(ieee80211_tx_status_irqsafe); | |
899 | ||
900 | static void ieee80211_tasklet_handler(unsigned long data) | |
901 | { | |
902 | struct ieee80211_local *local = (struct ieee80211_local *) data; | |
903 | struct sk_buff *skb; | |
904 | struct ieee80211_rx_status rx_status; | |
eadc8d9e | 905 | struct ieee80211_ra_tid *ra_tid; |
f0706e82 JB |
906 | |
907 | while ((skb = skb_dequeue(&local->skb_queue)) || | |
908 | (skb = skb_dequeue(&local->skb_queue_unreliable))) { | |
909 | switch (skb->pkt_type) { | |
910 | case IEEE80211_RX_MSG: | |
911 | /* status is in skb->cb */ | |
912 | memcpy(&rx_status, skb->cb, sizeof(rx_status)); | |
51fb61e7 | 913 | /* Clear skb->pkt_type in order to not confuse kernel |
f0706e82 JB |
914 | * netstack. */ |
915 | skb->pkt_type = 0; | |
916 | __ieee80211_rx(local_to_hw(local), skb, &rx_status); | |
917 | break; | |
918 | case IEEE80211_TX_STATUS_MSG: | |
f0706e82 | 919 | skb->pkt_type = 0; |
e039fa4a | 920 | ieee80211_tx_status(local_to_hw(local), skb); |
f0706e82 | 921 | break; |
eadc8d9e RR |
922 | case IEEE80211_DELBA_MSG: |
923 | ra_tid = (struct ieee80211_ra_tid *) &skb->cb; | |
924 | ieee80211_stop_tx_ba_cb(local_to_hw(local), | |
925 | ra_tid->ra, ra_tid->tid); | |
926 | dev_kfree_skb(skb); | |
927 | break; | |
928 | case IEEE80211_ADDBA_MSG: | |
929 | ra_tid = (struct ieee80211_ra_tid *) &skb->cb; | |
930 | ieee80211_start_tx_ba_cb(local_to_hw(local), | |
931 | ra_tid->ra, ra_tid->tid); | |
932 | dev_kfree_skb(skb); | |
933 | break ; | |
f4ea83dd JB |
934 | default: |
935 | WARN_ON(1); | |
f0706e82 JB |
936 | dev_kfree_skb(skb); |
937 | break; | |
938 | } | |
939 | } | |
940 | } | |
941 | ||
f0706e82 JB |
942 | /* Remove added headers (e.g., QoS control), encryption header/MIC, etc. to |
943 | * make a prepared TX frame (one that has been given to hw) to look like brand | |
944 | * new IEEE 802.11 frame that is ready to go through TX processing again. | |
d0f09804 | 945 | */ |
f0706e82 JB |
946 | static void ieee80211_remove_tx_extra(struct ieee80211_local *local, |
947 | struct ieee80211_key *key, | |
e039fa4a | 948 | struct sk_buff *skb) |
f0706e82 | 949 | { |
62bf1d76 HH |
950 | unsigned int hdrlen, iv_len, mic_len; |
951 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; | |
f0706e82 | 952 | |
62bf1d76 | 953 | hdrlen = ieee80211_hdrlen(hdr->frame_control); |
f0706e82 JB |
954 | |
955 | if (!key) | |
956 | goto no_key; | |
957 | ||
8f20fc24 | 958 | switch (key->conf.alg) { |
f0706e82 JB |
959 | case ALG_WEP: |
960 | iv_len = WEP_IV_LEN; | |
961 | mic_len = WEP_ICV_LEN; | |
962 | break; | |
963 | case ALG_TKIP: | |
964 | iv_len = TKIP_IV_LEN; | |
965 | mic_len = TKIP_ICV_LEN; | |
966 | break; | |
967 | case ALG_CCMP: | |
968 | iv_len = CCMP_HDR_LEN; | |
969 | mic_len = CCMP_MIC_LEN; | |
970 | break; | |
971 | default: | |
972 | goto no_key; | |
973 | } | |
974 | ||
62bf1d76 | 975 | if (skb->len >= hdrlen + mic_len && |
11a843b7 | 976 | !(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)) |
f0706e82 | 977 | skb_trim(skb, skb->len - mic_len); |
62bf1d76 | 978 | if (skb->len >= hdrlen + iv_len) { |
f0706e82 | 979 | memmove(skb->data + iv_len, skb->data, hdrlen); |
62bf1d76 | 980 | hdr = (struct ieee80211_hdr *)skb_pull(skb, iv_len); |
f0706e82 JB |
981 | } |
982 | ||
983 | no_key: | |
62bf1d76 HH |
984 | if (ieee80211_is_data_qos(hdr->frame_control)) { |
985 | hdr->frame_control &= ~cpu_to_le16(IEEE80211_STYPE_QOS_DATA); | |
986 | memmove(skb->data + IEEE80211_QOS_CTL_LEN, skb->data, | |
987 | hdrlen - IEEE80211_QOS_CTL_LEN); | |
988 | skb_pull(skb, IEEE80211_QOS_CTL_LEN); | |
f0706e82 JB |
989 | } |
990 | } | |
991 | ||
d46e144b JB |
992 | static void ieee80211_handle_filtered_frame(struct ieee80211_local *local, |
993 | struct sta_info *sta, | |
e039fa4a | 994 | struct sk_buff *skb) |
d46e144b | 995 | { |
e039fa4a JB |
996 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
997 | ||
d46e144b JB |
998 | sta->tx_filtered_count++; |
999 | ||
1000 | /* | |
1001 | * Clear the TX filter mask for this STA when sending the next | |
1002 | * packet. If the STA went to power save mode, this will happen | |
f6d97104 | 1003 | * when it wakes up for the next time. |
d46e144b | 1004 | */ |
07346f81 | 1005 | set_sta_flags(sta, WLAN_STA_CLEAR_PS_FILT); |
d46e144b JB |
1006 | |
1007 | /* | |
1008 | * This code races in the following way: | |
1009 | * | |
1010 | * (1) STA sends frame indicating it will go to sleep and does so | |
1011 | * (2) hardware/firmware adds STA to filter list, passes frame up | |
1012 | * (3) hardware/firmware processes TX fifo and suppresses a frame | |
1013 | * (4) we get TX status before having processed the frame and | |
1014 | * knowing that the STA has gone to sleep. | |
1015 | * | |
1016 | * This is actually quite unlikely even when both those events are | |
1017 | * processed from interrupts coming in quickly after one another or | |
1018 | * even at the same time because we queue both TX status events and | |
1019 | * RX frames to be processed by a tasklet and process them in the | |
1020 | * same order that they were received or TX status last. Hence, there | |
1021 | * is no race as long as the frame RX is processed before the next TX | |
1022 | * status, which drivers can ensure, see below. | |
1023 | * | |
1024 | * Note that this can only happen if the hardware or firmware can | |
1025 | * actually add STAs to the filter list, if this is done by the | |
1026 | * driver in response to set_tim() (which will only reduce the race | |
1027 | * this whole filtering tries to solve, not completely solve it) | |
1028 | * this situation cannot happen. | |
1029 | * | |
1030 | * To completely solve this race drivers need to make sure that they | |
1031 | * (a) don't mix the irq-safe/not irq-safe TX status/RX processing | |
1032 | * functions and | |
1033 | * (b) always process RX events before TX status events if ordering | |
1034 | * can be unknown, for example with different interrupt status | |
1035 | * bits. | |
1036 | */ | |
07346f81 | 1037 | if (test_sta_flags(sta, WLAN_STA_PS) && |
d46e144b | 1038 | skb_queue_len(&sta->tx_filtered) < STA_MAX_TX_BUFFER) { |
e039fa4a | 1039 | ieee80211_remove_tx_extra(local, sta->key, skb); |
d46e144b JB |
1040 | skb_queue_tail(&sta->tx_filtered, skb); |
1041 | return; | |
1042 | } | |
1043 | ||
07346f81 | 1044 | if (!test_sta_flags(sta, WLAN_STA_PS) && |
e039fa4a | 1045 | !(info->flags & IEEE80211_TX_CTL_REQUEUE)) { |
d46e144b | 1046 | /* Software retry the packet once */ |
e039fa4a JB |
1047 | info->flags |= IEEE80211_TX_CTL_REQUEUE; |
1048 | ieee80211_remove_tx_extra(local, sta->key, skb); | |
d46e144b JB |
1049 | dev_queue_xmit(skb); |
1050 | return; | |
1051 | } | |
1052 | ||
f4ea83dd | 1053 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
d46e144b JB |
1054 | if (net_ratelimit()) |
1055 | printk(KERN_DEBUG "%s: dropped TX filtered frame, " | |
1056 | "queue_len=%d PS=%d @%lu\n", | |
1057 | wiphy_name(local->hw.wiphy), | |
1058 | skb_queue_len(&sta->tx_filtered), | |
07346f81 | 1059 | !!test_sta_flags(sta, WLAN_STA_PS), jiffies); |
f4ea83dd | 1060 | #endif |
d46e144b JB |
1061 | dev_kfree_skb(skb); |
1062 | } | |
1063 | ||
e039fa4a | 1064 | void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb) |
f0706e82 JB |
1065 | { |
1066 | struct sk_buff *skb2; | |
1067 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; | |
1068 | struct ieee80211_local *local = hw_to_local(hw); | |
e039fa4a | 1069 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
f0706e82 | 1070 | u16 frag, type; |
429a3805 | 1071 | __le16 fc; |
b306f453 JB |
1072 | struct ieee80211_tx_status_rtap_hdr *rthdr; |
1073 | struct ieee80211_sub_if_data *sdata; | |
3d30d949 | 1074 | struct net_device *prev_dev = NULL; |
429a3805 | 1075 | struct sta_info *sta; |
f0706e82 | 1076 | |
d0709a65 JB |
1077 | rcu_read_lock(); |
1078 | ||
e039fa4a | 1079 | if (info->status.excessive_retries) { |
f0706e82 JB |
1080 | sta = sta_info_get(local, hdr->addr1); |
1081 | if (sta) { | |
07346f81 | 1082 | if (test_sta_flags(sta, WLAN_STA_PS)) { |
d46e144b JB |
1083 | /* |
1084 | * The STA is in power save mode, so assume | |
f0706e82 JB |
1085 | * that this TX packet failed because of that. |
1086 | */ | |
e039fa4a | 1087 | ieee80211_handle_filtered_frame(local, sta, skb); |
d0709a65 | 1088 | rcu_read_unlock(); |
d46e144b | 1089 | return; |
f0706e82 | 1090 | } |
f0706e82 JB |
1091 | } |
1092 | } | |
1093 | ||
429a3805 RR |
1094 | fc = hdr->frame_control; |
1095 | ||
1096 | if ((info->flags & IEEE80211_TX_STAT_AMPDU_NO_BACK) && | |
1097 | (ieee80211_is_data_qos(fc))) { | |
1098 | u16 tid, ssn; | |
1099 | u8 *qc; | |
1100 | sta = sta_info_get(local, hdr->addr1); | |
1101 | if (sta) { | |
1102 | qc = ieee80211_get_qos_ctl(hdr); | |
1103 | tid = qc[0] & 0xf; | |
1104 | ssn = ((le16_to_cpu(hdr->seq_ctrl) + 0x10) | |
1105 | & IEEE80211_SCTL_SEQ); | |
f698d856 | 1106 | ieee80211_send_bar(sta->sdata, hdr->addr1, |
429a3805 RR |
1107 | tid, ssn); |
1108 | } | |
1109 | } | |
1110 | ||
e039fa4a | 1111 | if (info->flags & IEEE80211_TX_STAT_TX_FILTERED) { |
f0706e82 JB |
1112 | sta = sta_info_get(local, hdr->addr1); |
1113 | if (sta) { | |
e039fa4a | 1114 | ieee80211_handle_filtered_frame(local, sta, skb); |
d0709a65 | 1115 | rcu_read_unlock(); |
f0706e82 JB |
1116 | return; |
1117 | } | |
1abbe498 | 1118 | } else |
e039fa4a | 1119 | rate_control_tx_status(local->mdev, skb); |
f0706e82 | 1120 | |
d0709a65 JB |
1121 | rcu_read_unlock(); |
1122 | ||
f0706e82 JB |
1123 | ieee80211_led_tx(local, 0); |
1124 | ||
1125 | /* SNMP counters | |
1126 | * Fragments are passed to low-level drivers as separate skbs, so these | |
1127 | * are actually fragments, not frames. Update frame counters only for | |
1128 | * the first fragment of the frame. */ | |
1129 | ||
1130 | frag = le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_FRAG; | |
1131 | type = le16_to_cpu(hdr->frame_control) & IEEE80211_FCTL_FTYPE; | |
1132 | ||
e039fa4a | 1133 | if (info->flags & IEEE80211_TX_STAT_ACK) { |
f0706e82 JB |
1134 | if (frag == 0) { |
1135 | local->dot11TransmittedFrameCount++; | |
1136 | if (is_multicast_ether_addr(hdr->addr1)) | |
1137 | local->dot11MulticastTransmittedFrameCount++; | |
e039fa4a | 1138 | if (info->status.retry_count > 0) |
f0706e82 | 1139 | local->dot11RetryCount++; |
e039fa4a | 1140 | if (info->status.retry_count > 1) |
f0706e82 JB |
1141 | local->dot11MultipleRetryCount++; |
1142 | } | |
1143 | ||
1144 | /* This counter shall be incremented for an acknowledged MPDU | |
1145 | * with an individual address in the address 1 field or an MPDU | |
1146 | * with a multicast address in the address 1 field of type Data | |
1147 | * or Management. */ | |
1148 | if (!is_multicast_ether_addr(hdr->addr1) || | |
1149 | type == IEEE80211_FTYPE_DATA || | |
1150 | type == IEEE80211_FTYPE_MGMT) | |
1151 | local->dot11TransmittedFragmentCount++; | |
1152 | } else { | |
1153 | if (frag == 0) | |
1154 | local->dot11FailedCount++; | |
1155 | } | |
1156 | ||
b306f453 JB |
1157 | /* this was a transmitted frame, but now we want to reuse it */ |
1158 | skb_orphan(skb); | |
1159 | ||
3d30d949 MW |
1160 | /* |
1161 | * This is a bit racy but we can avoid a lot of work | |
1162 | * with this test... | |
1163 | */ | |
1164 | if (!local->monitors && !local->cooked_mntrs) { | |
f0706e82 JB |
1165 | dev_kfree_skb(skb); |
1166 | return; | |
1167 | } | |
1168 | ||
b306f453 | 1169 | /* send frame to monitor interfaces now */ |
f0706e82 | 1170 | |
b306f453 JB |
1171 | if (skb_headroom(skb) < sizeof(*rthdr)) { |
1172 | printk(KERN_ERR "ieee80211_tx_status: headroom too small\n"); | |
f0706e82 JB |
1173 | dev_kfree_skb(skb); |
1174 | return; | |
1175 | } | |
f0706e82 | 1176 | |
988c0f72 | 1177 | rthdr = (struct ieee80211_tx_status_rtap_hdr *) |
b306f453 JB |
1178 | skb_push(skb, sizeof(*rthdr)); |
1179 | ||
1180 | memset(rthdr, 0, sizeof(*rthdr)); | |
1181 | rthdr->hdr.it_len = cpu_to_le16(sizeof(*rthdr)); | |
1182 | rthdr->hdr.it_present = | |
1183 | cpu_to_le32((1 << IEEE80211_RADIOTAP_TX_FLAGS) | | |
1184 | (1 << IEEE80211_RADIOTAP_DATA_RETRIES)); | |
1185 | ||
e039fa4a | 1186 | if (!(info->flags & IEEE80211_TX_STAT_ACK) && |
b306f453 JB |
1187 | !is_multicast_ether_addr(hdr->addr1)) |
1188 | rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_FAIL); | |
1189 | ||
e039fa4a JB |
1190 | if ((info->flags & IEEE80211_TX_CTL_USE_RTS_CTS) && |
1191 | (info->flags & IEEE80211_TX_CTL_USE_CTS_PROTECT)) | |
b306f453 | 1192 | rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_CTS); |
e039fa4a | 1193 | else if (info->flags & IEEE80211_TX_CTL_USE_RTS_CTS) |
b306f453 JB |
1194 | rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_RTS); |
1195 | ||
e039fa4a | 1196 | rthdr->data_retries = info->status.retry_count; |
b306f453 | 1197 | |
3d30d949 MW |
1198 | /* XXX: is this sufficient for BPF? */ |
1199 | skb_set_mac_header(skb, 0); | |
1200 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
1201 | skb->pkt_type = PACKET_OTHERHOST; | |
1202 | skb->protocol = htons(ETH_P_802_2); | |
1203 | memset(skb->cb, 0, sizeof(skb->cb)); | |
1204 | ||
79010420 | 1205 | rcu_read_lock(); |
79010420 | 1206 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { |
51fb61e7 | 1207 | if (sdata->vif.type == IEEE80211_IF_TYPE_MNTR) { |
b306f453 JB |
1208 | if (!netif_running(sdata->dev)) |
1209 | continue; | |
3d30d949 MW |
1210 | |
1211 | if (prev_dev) { | |
79010420 | 1212 | skb2 = skb_clone(skb, GFP_ATOMIC); |
3d30d949 MW |
1213 | if (skb2) { |
1214 | skb2->dev = prev_dev; | |
1215 | netif_rx(skb2); | |
1216 | } | |
1217 | } | |
1218 | ||
1219 | prev_dev = sdata->dev; | |
b306f453 JB |
1220 | } |
1221 | } | |
3d30d949 MW |
1222 | if (prev_dev) { |
1223 | skb->dev = prev_dev; | |
1224 | netif_rx(skb); | |
1225 | skb = NULL; | |
1226 | } | |
79010420 | 1227 | rcu_read_unlock(); |
3d30d949 | 1228 | dev_kfree_skb(skb); |
f0706e82 JB |
1229 | } |
1230 | EXPORT_SYMBOL(ieee80211_tx_status); | |
1231 | ||
f0706e82 JB |
1232 | struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len, |
1233 | const struct ieee80211_ops *ops) | |
1234 | { | |
f0706e82 | 1235 | struct ieee80211_local *local; |
f0706e82 JB |
1236 | int priv_size; |
1237 | struct wiphy *wiphy; | |
1238 | ||
1239 | /* Ensure 32-byte alignment of our private data and hw private data. | |
1240 | * We use the wiphy priv data for both our ieee80211_local and for | |
1241 | * the driver's private data | |
1242 | * | |
1243 | * In memory it'll be like this: | |
1244 | * | |
1245 | * +-------------------------+ | |
1246 | * | struct wiphy | | |
1247 | * +-------------------------+ | |
1248 | * | struct ieee80211_local | | |
1249 | * +-------------------------+ | |
1250 | * | driver's private data | | |
1251 | * +-------------------------+ | |
1252 | * | |
1253 | */ | |
1254 | priv_size = ((sizeof(struct ieee80211_local) + | |
1255 | NETDEV_ALIGN_CONST) & ~NETDEV_ALIGN_CONST) + | |
1256 | priv_data_len; | |
1257 | ||
1258 | wiphy = wiphy_new(&mac80211_config_ops, priv_size); | |
1259 | ||
1260 | if (!wiphy) | |
1261 | return NULL; | |
1262 | ||
1263 | wiphy->privid = mac80211_wiphy_privid; | |
1264 | ||
1265 | local = wiphy_priv(wiphy); | |
1266 | local->hw.wiphy = wiphy; | |
1267 | ||
1268 | local->hw.priv = (char *)local + | |
1269 | ((sizeof(struct ieee80211_local) + | |
1270 | NETDEV_ALIGN_CONST) & ~NETDEV_ALIGN_CONST); | |
1271 | ||
4480f15c | 1272 | BUG_ON(!ops->tx); |
4150c572 JB |
1273 | BUG_ON(!ops->start); |
1274 | BUG_ON(!ops->stop); | |
4480f15c JB |
1275 | BUG_ON(!ops->config); |
1276 | BUG_ON(!ops->add_interface); | |
4150c572 JB |
1277 | BUG_ON(!ops->remove_interface); |
1278 | BUG_ON(!ops->configure_filter); | |
f0706e82 JB |
1279 | local->ops = ops; |
1280 | ||
f0706e82 JB |
1281 | local->hw.queues = 1; /* default */ |
1282 | ||
f0706e82 JB |
1283 | local->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD; |
1284 | local->fragmentation_threshold = IEEE80211_MAX_FRAG_THRESHOLD; | |
1285 | local->short_retry_limit = 7; | |
1286 | local->long_retry_limit = 4; | |
1287 | local->hw.conf.radio_enabled = 1; | |
f0706e82 | 1288 | |
79010420 | 1289 | INIT_LIST_HEAD(&local->interfaces); |
f0706e82 | 1290 | |
b16bd15c JB |
1291 | spin_lock_init(&local->key_lock); |
1292 | ||
f0706e82 | 1293 | INIT_DELAYED_WORK(&local->scan_work, ieee80211_sta_scan_work); |
f0706e82 JB |
1294 | |
1295 | sta_info_init(local); | |
1296 | ||
f0706e82 JB |
1297 | tasklet_init(&local->tx_pending_tasklet, ieee80211_tx_pending, |
1298 | (unsigned long)local); | |
1299 | tasklet_disable(&local->tx_pending_tasklet); | |
1300 | ||
1301 | tasklet_init(&local->tasklet, | |
1302 | ieee80211_tasklet_handler, | |
1303 | (unsigned long) local); | |
1304 | tasklet_disable(&local->tasklet); | |
1305 | ||
1306 | skb_queue_head_init(&local->skb_queue); | |
1307 | skb_queue_head_init(&local->skb_queue_unreliable); | |
1308 | ||
1309 | return local_to_hw(local); | |
1310 | } | |
1311 | EXPORT_SYMBOL(ieee80211_alloc_hw); | |
1312 | ||
1313 | int ieee80211_register_hw(struct ieee80211_hw *hw) | |
1314 | { | |
1315 | struct ieee80211_local *local = hw_to_local(hw); | |
1316 | const char *name; | |
1317 | int result; | |
8318d78a | 1318 | enum ieee80211_band band; |
96d51056 | 1319 | struct net_device *mdev; |
3e122be0 | 1320 | struct wireless_dev *mwdev; |
8318d78a JB |
1321 | |
1322 | /* | |
1323 | * generic code guarantees at least one band, | |
1324 | * set this very early because much code assumes | |
1325 | * that hw.conf.channel is assigned | |
1326 | */ | |
1327 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { | |
1328 | struct ieee80211_supported_band *sband; | |
1329 | ||
1330 | sband = local->hw.wiphy->bands[band]; | |
1331 | if (sband) { | |
1332 | /* init channel we're on */ | |
1333 | local->hw.conf.channel = | |
1334 | local->oper_channel = | |
1335 | local->scan_channel = &sband->channels[0]; | |
1336 | break; | |
1337 | } | |
1338 | } | |
f0706e82 | 1339 | |
f59ac048 LR |
1340 | /* if low-level driver supports AP, we also support VLAN */ |
1341 | if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) | |
1342 | local->hw.wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP_VLAN); | |
1343 | ||
1344 | /* mac80211 always supports monitor */ | |
1345 | local->hw.wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR); | |
1346 | ||
f0706e82 JB |
1347 | result = wiphy_register(local->hw.wiphy); |
1348 | if (result < 0) | |
1349 | return result; | |
1350 | ||
e2530083 JB |
1351 | /* |
1352 | * We use the number of queues for feature tests (QoS, HT) internally | |
1353 | * so restrict them appropriately. | |
1354 | */ | |
e2530083 JB |
1355 | if (hw->queues > IEEE80211_MAX_QUEUES) |
1356 | hw->queues = IEEE80211_MAX_QUEUES; | |
1357 | if (hw->ampdu_queues > IEEE80211_MAX_AMPDU_QUEUES) | |
1358 | hw->ampdu_queues = IEEE80211_MAX_AMPDU_QUEUES; | |
1359 | if (hw->queues < 4) | |
1360 | hw->ampdu_queues = 0; | |
e2530083 | 1361 | |
3e122be0 | 1362 | mdev = alloc_netdev_mq(sizeof(struct wireless_dev), |
e2530083 JB |
1363 | "wmaster%d", ether_setup, |
1364 | ieee80211_num_queues(hw)); | |
96d51056 JB |
1365 | if (!mdev) |
1366 | goto fail_mdev_alloc; | |
1367 | ||
3e122be0 JB |
1368 | mwdev = netdev_priv(mdev); |
1369 | mdev->ieee80211_ptr = mwdev; | |
1370 | mwdev->wiphy = local->hw.wiphy; | |
96d51056 JB |
1371 | |
1372 | local->mdev = mdev; | |
1373 | ||
3e122be0 | 1374 | ieee80211_rx_bss_list_init(local); |
96d51056 JB |
1375 | |
1376 | mdev->hard_start_xmit = ieee80211_master_start_xmit; | |
1377 | mdev->open = ieee80211_master_open; | |
1378 | mdev->stop = ieee80211_master_stop; | |
1379 | mdev->type = ARPHRD_IEEE80211; | |
1380 | mdev->header_ops = &ieee80211_header_ops; | |
1381 | mdev->set_multicast_list = ieee80211_master_set_multicast_list; | |
1382 | ||
f0706e82 | 1383 | name = wiphy_dev(local->hw.wiphy)->driver->name; |
59959a61 | 1384 | local->hw.workqueue = create_freezeable_workqueue(name); |
f0706e82 JB |
1385 | if (!local->hw.workqueue) { |
1386 | result = -ENOMEM; | |
1387 | goto fail_workqueue; | |
1388 | } | |
1389 | ||
b306f453 JB |
1390 | /* |
1391 | * The hardware needs headroom for sending the frame, | |
1392 | * and we need some headroom for passing the frame to monitor | |
1393 | * interfaces, but never both at the same time. | |
1394 | */ | |
33ccad35 JB |
1395 | local->tx_headroom = max_t(unsigned int , local->hw.extra_tx_headroom, |
1396 | sizeof(struct ieee80211_tx_status_rtap_hdr)); | |
b306f453 | 1397 | |
e9f207f0 JB |
1398 | debugfs_hw_add(local); |
1399 | ||
dc0ae30c TW |
1400 | if (local->hw.conf.beacon_int < 10) |
1401 | local->hw.conf.beacon_int = 100; | |
f0706e82 | 1402 | |
ea95bba4 TW |
1403 | if (local->hw.max_listen_interval == 0) |
1404 | local->hw.max_listen_interval = 1; | |
1405 | ||
1406 | local->hw.conf.listen_interval = local->hw.max_listen_interval; | |
1407 | ||
566bfe5a BR |
1408 | local->wstats_flags |= local->hw.flags & (IEEE80211_HW_SIGNAL_UNSPEC | |
1409 | IEEE80211_HW_SIGNAL_DB | | |
1410 | IEEE80211_HW_SIGNAL_DBM) ? | |
f0706e82 | 1411 | IW_QUAL_QUAL_UPDATED : IW_QUAL_QUAL_INVALID; |
566bfe5a | 1412 | local->wstats_flags |= local->hw.flags & IEEE80211_HW_NOISE_DBM ? |
f0706e82 | 1413 | IW_QUAL_NOISE_UPDATED : IW_QUAL_NOISE_INVALID; |
566bfe5a | 1414 | if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM) |
f0706e82 JB |
1415 | local->wstats_flags |= IW_QUAL_DBM; |
1416 | ||
1417 | result = sta_info_start(local); | |
1418 | if (result < 0) | |
1419 | goto fail_sta_info; | |
1420 | ||
1421 | rtnl_lock(); | |
1422 | result = dev_alloc_name(local->mdev, local->mdev->name); | |
1423 | if (result < 0) | |
1424 | goto fail_dev; | |
1425 | ||
1426 | memcpy(local->mdev->dev_addr, local->hw.wiphy->perm_addr, ETH_ALEN); | |
1427 | SET_NETDEV_DEV(local->mdev, wiphy_dev(local->hw.wiphy)); | |
1428 | ||
1429 | result = register_netdevice(local->mdev); | |
1430 | if (result < 0) | |
1431 | goto fail_dev; | |
1432 | ||
830f9038 JB |
1433 | result = ieee80211_init_rate_ctrl_alg(local, |
1434 | hw->rate_control_algorithm); | |
f0706e82 JB |
1435 | if (result < 0) { |
1436 | printk(KERN_DEBUG "%s: Failed to initialize rate control " | |
dd1cd4c6 | 1437 | "algorithm\n", wiphy_name(local->hw.wiphy)); |
f0706e82 JB |
1438 | goto fail_rate; |
1439 | } | |
1440 | ||
1441 | result = ieee80211_wep_init(local); | |
1442 | ||
1443 | if (result < 0) { | |
023a04be JF |
1444 | printk(KERN_DEBUG "%s: Failed to initialize wep: %d\n", |
1445 | wiphy_name(local->hw.wiphy), result); | |
f0706e82 JB |
1446 | goto fail_wep; |
1447 | } | |
1448 | ||
51cb6db0 | 1449 | local->mdev->select_queue = ieee80211_select_queue; |
f0706e82 JB |
1450 | |
1451 | /* add one default STA interface */ | |
3e122be0 | 1452 | result = ieee80211_if_add(local, "wlan%d", NULL, |
ee385855 | 1453 | IEEE80211_IF_TYPE_STA, NULL); |
f0706e82 JB |
1454 | if (result) |
1455 | printk(KERN_WARNING "%s: Failed to add default virtual iface\n", | |
dd1cd4c6 | 1456 | wiphy_name(local->hw.wiphy)); |
f0706e82 | 1457 | |
f0706e82 JB |
1458 | rtnl_unlock(); |
1459 | ||
1460 | ieee80211_led_init(local); | |
1461 | ||
1462 | return 0; | |
1463 | ||
1464 | fail_wep: | |
1465 | rate_control_deinitialize(local); | |
1466 | fail_rate: | |
1467 | unregister_netdevice(local->mdev); | |
339a7c41 | 1468 | local->mdev = NULL; |
f0706e82 JB |
1469 | fail_dev: |
1470 | rtnl_unlock(); | |
1471 | sta_info_stop(local); | |
1472 | fail_sta_info: | |
e9f207f0 | 1473 | debugfs_hw_del(local); |
f0706e82 JB |
1474 | destroy_workqueue(local->hw.workqueue); |
1475 | fail_workqueue: | |
3e122be0 JB |
1476 | if (local->mdev) |
1477 | free_netdev(local->mdev); | |
96d51056 | 1478 | fail_mdev_alloc: |
f0706e82 JB |
1479 | wiphy_unregister(local->hw.wiphy); |
1480 | return result; | |
1481 | } | |
1482 | EXPORT_SYMBOL(ieee80211_register_hw); | |
1483 | ||
f0706e82 JB |
1484 | void ieee80211_unregister_hw(struct ieee80211_hw *hw) |
1485 | { | |
1486 | struct ieee80211_local *local = hw_to_local(hw); | |
f0706e82 JB |
1487 | |
1488 | tasklet_kill(&local->tx_pending_tasklet); | |
1489 | tasklet_kill(&local->tasklet); | |
1490 | ||
1491 | rtnl_lock(); | |
1492 | ||
79010420 JB |
1493 | /* |
1494 | * At this point, interface list manipulations are fine | |
1495 | * because the driver cannot be handing us frames any | |
1496 | * more and the tasklet is killed. | |
1497 | */ | |
5b2812e9 | 1498 | |
75636525 JB |
1499 | /* First, we remove all virtual interfaces. */ |
1500 | ieee80211_remove_interfaces(local); | |
5b2812e9 JB |
1501 | |
1502 | /* then, finally, remove the master interface */ | |
3e122be0 | 1503 | unregister_netdevice(local->mdev); |
f0706e82 JB |
1504 | |
1505 | rtnl_unlock(); | |
1506 | ||
3e122be0 | 1507 | ieee80211_rx_bss_list_deinit(local); |
f0706e82 JB |
1508 | ieee80211_clear_tx_pending(local); |
1509 | sta_info_stop(local); | |
1510 | rate_control_deinitialize(local); | |
e9f207f0 | 1511 | debugfs_hw_del(local); |
f0706e82 | 1512 | |
f0706e82 JB |
1513 | if (skb_queue_len(&local->skb_queue) |
1514 | || skb_queue_len(&local->skb_queue_unreliable)) | |
1515 | printk(KERN_WARNING "%s: skb_queue not empty\n", | |
dd1cd4c6 | 1516 | wiphy_name(local->hw.wiphy)); |
f0706e82 JB |
1517 | skb_queue_purge(&local->skb_queue); |
1518 | skb_queue_purge(&local->skb_queue_unreliable); | |
1519 | ||
1520 | destroy_workqueue(local->hw.workqueue); | |
1521 | wiphy_unregister(local->hw.wiphy); | |
1522 | ieee80211_wep_free(local); | |
1523 | ieee80211_led_exit(local); | |
3e122be0 | 1524 | free_netdev(local->mdev); |
f0706e82 JB |
1525 | } |
1526 | EXPORT_SYMBOL(ieee80211_unregister_hw); | |
1527 | ||
1528 | void ieee80211_free_hw(struct ieee80211_hw *hw) | |
1529 | { | |
1530 | struct ieee80211_local *local = hw_to_local(hw); | |
1531 | ||
f0706e82 JB |
1532 | wiphy_free(local->hw.wiphy); |
1533 | } | |
1534 | EXPORT_SYMBOL(ieee80211_free_hw); | |
1535 | ||
f0706e82 JB |
1536 | static int __init ieee80211_init(void) |
1537 | { | |
1538 | struct sk_buff *skb; | |
1539 | int ret; | |
1540 | ||
e039fa4a JB |
1541 | BUILD_BUG_ON(sizeof(struct ieee80211_tx_info) > sizeof(skb->cb)); |
1542 | BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, driver_data) + | |
1543 | IEEE80211_TX_INFO_DRIVER_DATA_SIZE > sizeof(skb->cb)); | |
f0706e82 | 1544 | |
4b475898 | 1545 | ret = rc80211_pid_init(); |
ad018375 | 1546 | if (ret) |
51cb6db0 | 1547 | return ret; |
f0706e82 | 1548 | |
e9f207f0 JB |
1549 | ieee80211_debugfs_netdev_init(); |
1550 | ||
f0706e82 JB |
1551 | return 0; |
1552 | } | |
1553 | ||
f0706e82 JB |
1554 | static void __exit ieee80211_exit(void) |
1555 | { | |
4b475898 | 1556 | rc80211_pid_exit(); |
ac71c691 | 1557 | |
3b96766f JB |
1558 | /* |
1559 | * For key todo, it'll be empty by now but the work | |
1560 | * might still be scheduled. | |
1561 | */ | |
1562 | flush_scheduled_work(); | |
1563 | ||
f7a92144 LCC |
1564 | if (mesh_allocated) |
1565 | ieee80211s_stop(); | |
902acc78 | 1566 | |
e9f207f0 | 1567 | ieee80211_debugfs_netdev_exit(); |
f0706e82 JB |
1568 | } |
1569 | ||
1570 | ||
ca9938fe | 1571 | subsys_initcall(ieee80211_init); |
f0706e82 JB |
1572 | module_exit(ieee80211_exit); |
1573 | ||
1574 | MODULE_DESCRIPTION("IEEE 802.11 subsystem"); | |
1575 | MODULE_LICENSE("GPL"); |