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f0706e82 | 1 | /* |
0d143fe1 JB |
2 | * Interface handling (except master interface) |
3 | * | |
f0706e82 JB |
4 | * Copyright 2002-2005, Instant802 Networks, Inc. |
5 | * Copyright 2005-2006, Devicescape Software, Inc. | |
6 | * Copyright (c) 2006 Jiri Benc <jbenc@suse.cz> | |
75636525 | 7 | * Copyright 2008, Johannes Berg <johannes@sipsolutions.net> |
f0706e82 JB |
8 | * |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License version 2 as | |
11 | * published by the Free Software Foundation. | |
12 | */ | |
13 | #include <linux/kernel.h> | |
14 | #include <linux/if_arp.h> | |
15 | #include <linux/netdevice.h> | |
16 | #include <linux/rtnetlink.h> | |
17 | #include <net/mac80211.h> | |
cf0277e7 | 18 | #include <net/ieee80211_radiotap.h> |
f0706e82 JB |
19 | #include "ieee80211_i.h" |
20 | #include "sta_info.h" | |
e9f207f0 | 21 | #include "debugfs_netdev.h" |
ee385855 | 22 | #include "mesh.h" |
0d143fe1 | 23 | #include "led.h" |
24487981 | 24 | #include "driver-ops.h" |
cf0277e7 | 25 | #include "wme.h" |
0d143fe1 | 26 | |
c771c9d8 JB |
27 | /** |
28 | * DOC: Interface list locking | |
29 | * | |
30 | * The interface list in each struct ieee80211_local is protected | |
31 | * three-fold: | |
32 | * | |
33 | * (1) modifications may only be done under the RTNL | |
34 | * (2) modifications and readers are protected against each other by | |
35 | * the iflist_mtx. | |
36 | * (3) modifications are done in an RCU manner so atomic readers | |
37 | * can traverse the list in RCU-safe blocks. | |
38 | * | |
39 | * As a consequence, reads (traversals) of the list can be protected | |
40 | * by either the RTNL, the iflist_mtx or RCU. | |
41 | */ | |
42 | ||
43 | ||
0d143fe1 JB |
44 | static int ieee80211_change_mtu(struct net_device *dev, int new_mtu) |
45 | { | |
46 | int meshhdrlen; | |
47 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
48 | ||
49 | meshhdrlen = (sdata->vif.type == NL80211_IFTYPE_MESH_POINT) ? 5 : 0; | |
50 | ||
51 | /* FIX: what would be proper limits for MTU? | |
52 | * This interface uses 802.3 frames. */ | |
53 | if (new_mtu < 256 || | |
54 | new_mtu > IEEE80211_MAX_DATA_LEN - 24 - 6 - meshhdrlen) { | |
55 | return -EINVAL; | |
56 | } | |
57 | ||
58 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG | |
59 | printk(KERN_DEBUG "%s: setting MTU %d\n", dev->name, new_mtu); | |
60 | #endif /* CONFIG_MAC80211_VERBOSE_DEBUG */ | |
61 | dev->mtu = new_mtu; | |
62 | return 0; | |
63 | } | |
64 | ||
65 | static inline int identical_mac_addr_allowed(int type1, int type2) | |
66 | { | |
67 | return type1 == NL80211_IFTYPE_MONITOR || | |
68 | type2 == NL80211_IFTYPE_MONITOR || | |
69 | (type1 == NL80211_IFTYPE_AP && type2 == NL80211_IFTYPE_WDS) || | |
70 | (type1 == NL80211_IFTYPE_WDS && | |
71 | (type2 == NL80211_IFTYPE_WDS || | |
72 | type2 == NL80211_IFTYPE_AP)) || | |
73 | (type1 == NL80211_IFTYPE_AP && type2 == NL80211_IFTYPE_AP_VLAN) || | |
74 | (type1 == NL80211_IFTYPE_AP_VLAN && | |
75 | (type2 == NL80211_IFTYPE_AP || | |
76 | type2 == NL80211_IFTYPE_AP_VLAN)); | |
77 | } | |
78 | ||
79 | static int ieee80211_open(struct net_device *dev) | |
80 | { | |
b4a4bf5d JB |
81 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
82 | struct ieee80211_sub_if_data *nsdata; | |
83 | struct ieee80211_local *local = sdata->local; | |
0d143fe1 JB |
84 | struct sta_info *sta; |
85 | struct ieee80211_if_init_conf conf; | |
86 | u32 changed = 0; | |
87 | int res; | |
e8975581 | 88 | u32 hw_reconf_flags = 0; |
0d143fe1 JB |
89 | u8 null_addr[ETH_ALEN] = {0}; |
90 | ||
0d143fe1 JB |
91 | /* fail early if user set an invalid address */ |
92 | if (compare_ether_addr(dev->dev_addr, null_addr) && | |
93 | !is_valid_ether_addr(dev->dev_addr)) | |
94 | return -EADDRNOTAVAIL; | |
95 | ||
96 | /* we hold the RTNL here so can safely walk the list */ | |
97 | list_for_each_entry(nsdata, &local->interfaces, list) { | |
98 | struct net_device *ndev = nsdata->dev; | |
99 | ||
100 | if (ndev != dev && netif_running(ndev)) { | |
101 | /* | |
102 | * Allow only a single IBSS interface to be up at any | |
103 | * time. This is restricted because beacon distribution | |
104 | * cannot work properly if both are in the same IBSS. | |
105 | * | |
106 | * To remove this restriction we'd have to disallow them | |
107 | * from setting the same SSID on different IBSS interfaces | |
108 | * belonging to the same hardware. Then, however, we're | |
109 | * faced with having to adopt two different TSF timers... | |
110 | */ | |
111 | if (sdata->vif.type == NL80211_IFTYPE_ADHOC && | |
112 | nsdata->vif.type == NL80211_IFTYPE_ADHOC) | |
113 | return -EBUSY; | |
114 | ||
115 | /* | |
116 | * The remaining checks are only performed for interfaces | |
117 | * with the same MAC address. | |
118 | */ | |
119 | if (compare_ether_addr(dev->dev_addr, ndev->dev_addr)) | |
120 | continue; | |
121 | ||
122 | /* | |
123 | * check whether it may have the same address | |
124 | */ | |
125 | if (!identical_mac_addr_allowed(sdata->vif.type, | |
126 | nsdata->vif.type)) | |
127 | return -ENOTUNIQ; | |
128 | ||
129 | /* | |
130 | * can only add VLANs to enabled APs | |
131 | */ | |
132 | if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN && | |
133 | nsdata->vif.type == NL80211_IFTYPE_AP) | |
134 | sdata->bss = &nsdata->u.ap; | |
135 | } | |
136 | } | |
137 | ||
138 | switch (sdata->vif.type) { | |
139 | case NL80211_IFTYPE_WDS: | |
140 | if (!is_valid_ether_addr(sdata->u.wds.remote_addr)) | |
141 | return -ENOLINK; | |
142 | break; | |
143 | case NL80211_IFTYPE_AP_VLAN: | |
144 | if (!sdata->bss) | |
145 | return -ENOLINK; | |
146 | list_add(&sdata->u.vlan.list, &sdata->bss->vlans); | |
147 | break; | |
148 | case NL80211_IFTYPE_AP: | |
149 | sdata->bss = &sdata->u.ap; | |
150 | break; | |
151 | case NL80211_IFTYPE_MESH_POINT: | |
152 | if (!ieee80211_vif_is_mesh(&sdata->vif)) | |
153 | break; | |
154 | /* mesh ifaces must set allmulti to forward mcast traffic */ | |
155 | atomic_inc(&local->iff_allmultis); | |
156 | break; | |
157 | case NL80211_IFTYPE_STATION: | |
158 | case NL80211_IFTYPE_MONITOR: | |
159 | case NL80211_IFTYPE_ADHOC: | |
160 | /* no special treatment */ | |
161 | break; | |
162 | case NL80211_IFTYPE_UNSPECIFIED: | |
163 | case __NL80211_IFTYPE_AFTER_LAST: | |
164 | /* cannot happen */ | |
165 | WARN_ON(1); | |
166 | break; | |
167 | } | |
168 | ||
169 | if (local->open_count == 0) { | |
24487981 | 170 | res = drv_start(local); |
0d143fe1 JB |
171 | if (res) |
172 | goto err_del_bss; | |
e8975581 JB |
173 | /* we're brought up, everything changes */ |
174 | hw_reconf_flags = ~0; | |
1f87f7d3 | 175 | ieee80211_led_radio(local, true); |
0d143fe1 JB |
176 | } |
177 | ||
178 | /* | |
179 | * Check all interfaces and copy the hopefully now-present | |
180 | * MAC address to those that have the special null one. | |
181 | */ | |
182 | list_for_each_entry(nsdata, &local->interfaces, list) { | |
183 | struct net_device *ndev = nsdata->dev; | |
184 | ||
185 | /* | |
186 | * No need to check netif_running since we do not allow | |
187 | * it to start up with this invalid address. | |
188 | */ | |
0adc23f5 | 189 | if (compare_ether_addr(null_addr, ndev->dev_addr) == 0) { |
0d143fe1 JB |
190 | memcpy(ndev->dev_addr, |
191 | local->hw.wiphy->perm_addr, | |
192 | ETH_ALEN); | |
0adc23f5 JL |
193 | memcpy(ndev->perm_addr, ndev->dev_addr, ETH_ALEN); |
194 | } | |
0d143fe1 JB |
195 | } |
196 | ||
0d143fe1 JB |
197 | /* |
198 | * Validate the MAC address for this device. | |
199 | */ | |
200 | if (!is_valid_ether_addr(dev->dev_addr)) { | |
24487981 JB |
201 | if (!local->open_count) |
202 | drv_stop(local); | |
0d143fe1 JB |
203 | return -EADDRNOTAVAIL; |
204 | } | |
205 | ||
206 | switch (sdata->vif.type) { | |
207 | case NL80211_IFTYPE_AP_VLAN: | |
208 | /* no need to tell driver */ | |
209 | break; | |
210 | case NL80211_IFTYPE_MONITOR: | |
211 | if (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES) { | |
212 | local->cooked_mntrs++; | |
213 | break; | |
214 | } | |
215 | ||
216 | /* must be before the call to ieee80211_configure_filter */ | |
217 | local->monitors++; | |
e8975581 | 218 | if (local->monitors == 1) { |
0869aea0 JB |
219 | local->hw.conf.flags |= IEEE80211_CONF_MONITOR; |
220 | hw_reconf_flags |= IEEE80211_CONF_CHANGE_MONITOR; | |
e8975581 | 221 | } |
0d143fe1 JB |
222 | |
223 | if (sdata->u.mntr_flags & MONITOR_FLAG_FCSFAIL) | |
224 | local->fif_fcsfail++; | |
225 | if (sdata->u.mntr_flags & MONITOR_FLAG_PLCPFAIL) | |
226 | local->fif_plcpfail++; | |
e3b90ca2 | 227 | if (sdata->u.mntr_flags & MONITOR_FLAG_CONTROL) { |
0d143fe1 | 228 | local->fif_control++; |
e3b90ca2 IP |
229 | local->fif_pspoll++; |
230 | } | |
0d143fe1 JB |
231 | if (sdata->u.mntr_flags & MONITOR_FLAG_OTHER_BSS) |
232 | local->fif_other_bss++; | |
233 | ||
0d143fe1 | 234 | ieee80211_configure_filter(local); |
0d143fe1 | 235 | break; |
0d143fe1 JB |
236 | default: |
237 | conf.vif = &sdata->vif; | |
238 | conf.type = sdata->vif.type; | |
239 | conf.mac_addr = dev->dev_addr; | |
24487981 | 240 | res = drv_add_interface(local, &conf); |
0d143fe1 JB |
241 | if (res) |
242 | goto err_stop; | |
243 | ||
a3c9aa51 AY |
244 | if (ieee80211_vif_is_mesh(&sdata->vif)) { |
245 | local->fif_other_bss++; | |
a3c9aa51 | 246 | ieee80211_configure_filter(local); |
a3c9aa51 | 247 | |
0d143fe1 | 248 | ieee80211_start_mesh(sdata); |
e3b90ca2 IP |
249 | } else if (sdata->vif.type == NL80211_IFTYPE_AP) { |
250 | local->fif_pspoll++; | |
251 | ||
e3b90ca2 | 252 | ieee80211_configure_filter(local); |
a3c9aa51 | 253 | } |
e3b90ca2 | 254 | |
0d143fe1 JB |
255 | changed |= ieee80211_reset_erp_info(sdata); |
256 | ieee80211_bss_info_change_notify(sdata, changed); | |
257 | ieee80211_enable_keys(sdata); | |
258 | ||
7986cf95 | 259 | if (sdata->vif.type == NL80211_IFTYPE_STATION) |
0d143fe1 JB |
260 | netif_carrier_off(dev); |
261 | else | |
262 | netif_carrier_on(dev); | |
263 | } | |
264 | ||
265 | if (sdata->vif.type == NL80211_IFTYPE_WDS) { | |
266 | /* Create STA entry for the WDS peer */ | |
267 | sta = sta_info_alloc(sdata, sdata->u.wds.remote_addr, | |
268 | GFP_KERNEL); | |
269 | if (!sta) { | |
270 | res = -ENOMEM; | |
271 | goto err_del_interface; | |
272 | } | |
273 | ||
274 | /* no locking required since STA is not live yet */ | |
275 | sta->flags |= WLAN_STA_AUTHORIZED; | |
276 | ||
277 | res = sta_info_insert(sta); | |
278 | if (res) { | |
279 | /* STA has been freed */ | |
280 | goto err_del_interface; | |
281 | } | |
282 | } | |
283 | ||
0d143fe1 JB |
284 | /* |
285 | * set_multicast_list will be invoked by the networking core | |
286 | * which will check whether any increments here were done in | |
287 | * error and sync them down to the hardware as filter flags. | |
288 | */ | |
289 | if (sdata->flags & IEEE80211_SDATA_ALLMULTI) | |
290 | atomic_inc(&local->iff_allmultis); | |
291 | ||
292 | if (sdata->flags & IEEE80211_SDATA_PROMISC) | |
293 | atomic_inc(&local->iff_promiscs); | |
294 | ||
5cff20e6 JB |
295 | hw_reconf_flags |= __ieee80211_recalc_idle(local); |
296 | ||
0d143fe1 | 297 | local->open_count++; |
e8975581 JB |
298 | if (hw_reconf_flags) { |
299 | ieee80211_hw_config(local, hw_reconf_flags); | |
0d143fe1 JB |
300 | /* |
301 | * set default queue parameters so drivers don't | |
302 | * need to initialise the hardware if the hardware | |
303 | * doesn't start up with sane defaults | |
304 | */ | |
305 | ieee80211_set_wmm_default(sdata); | |
306 | } | |
307 | ||
10f644a4 | 308 | ieee80211_recalc_ps(local, -1); |
965bedad | 309 | |
0d143fe1 JB |
310 | /* |
311 | * ieee80211_sta_work is disabled while network interface | |
312 | * is down. Therefore, some configuration changes may not | |
313 | * yet be effective. Trigger execution of ieee80211_sta_work | |
314 | * to fix this. | |
315 | */ | |
46900298 | 316 | if (sdata->vif.type == NL80211_IFTYPE_STATION) |
42935eca | 317 | ieee80211_queue_work(&local->hw, &sdata->u.mgd.work); |
f0706e82 | 318 | |
53623f1a | 319 | netif_start_queue(dev); |
0d143fe1 JB |
320 | |
321 | return 0; | |
322 | err_del_interface: | |
24487981 | 323 | drv_remove_interface(local, &conf); |
0d143fe1 | 324 | err_stop: |
24487981 JB |
325 | if (!local->open_count) |
326 | drv_stop(local); | |
0d143fe1 JB |
327 | err_del_bss: |
328 | sdata->bss = NULL; | |
329 | if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) | |
330 | list_del(&sdata->u.vlan.list); | |
331 | return res; | |
332 | } | |
333 | ||
334 | static int ieee80211_stop(struct net_device *dev) | |
335 | { | |
336 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
337 | struct ieee80211_local *local = sdata->local; | |
338 | struct ieee80211_if_init_conf conf; | |
339 | struct sta_info *sta; | |
5061b0c2 JB |
340 | unsigned long flags; |
341 | struct sk_buff *skb, *tmp; | |
e8975581 | 342 | u32 hw_reconf_flags = 0; |
5061b0c2 | 343 | int i; |
0d143fe1 JB |
344 | |
345 | /* | |
346 | * Stop TX on this interface first. | |
347 | */ | |
53623f1a | 348 | netif_stop_queue(dev); |
0d143fe1 JB |
349 | |
350 | /* | |
351 | * Now delete all active aggregation sessions. | |
352 | */ | |
353 | rcu_read_lock(); | |
354 | ||
355 | list_for_each_entry_rcu(sta, &local->sta_list, list) { | |
356 | if (sta->sdata == sdata) | |
2dace10e | 357 | ieee80211_sta_tear_down_BA_sessions(sta); |
0d143fe1 JB |
358 | } |
359 | ||
360 | rcu_read_unlock(); | |
361 | ||
362 | /* | |
363 | * Remove all stations associated with this interface. | |
364 | * | |
365 | * This must be done before calling ops->remove_interface() | |
366 | * because otherwise we can later invoke ops->sta_notify() | |
367 | * whenever the STAs are removed, and that invalidates driver | |
368 | * assumptions about always getting a vif pointer that is valid | |
369 | * (because if we remove a STA after ops->remove_interface() | |
370 | * the driver will have removed the vif info already!) | |
371 | * | |
372 | * We could relax this and only unlink the stations from the | |
373 | * hash table and list but keep them on a per-sdata list that | |
374 | * will be inserted back again when the interface is brought | |
375 | * up again, but I don't currently see a use case for that, | |
376 | * except with WDS which gets a STA entry created when it is | |
377 | * brought up. | |
378 | */ | |
379 | sta_info_flush(local, sdata); | |
380 | ||
381 | /* | |
382 | * Don't count this interface for promisc/allmulti while it | |
383 | * is down. dev_mc_unsync() will invoke set_multicast_list | |
384 | * on the master interface which will sync these down to the | |
385 | * hardware as filter flags. | |
386 | */ | |
387 | if (sdata->flags & IEEE80211_SDATA_ALLMULTI) | |
388 | atomic_dec(&local->iff_allmultis); | |
389 | ||
390 | if (sdata->flags & IEEE80211_SDATA_PROMISC) | |
391 | atomic_dec(&local->iff_promiscs); | |
392 | ||
e3b90ca2 IP |
393 | if (sdata->vif.type == NL80211_IFTYPE_AP) |
394 | local->fif_pspoll--; | |
395 | ||
3b8d81e0 JB |
396 | netif_addr_lock_bh(dev); |
397 | spin_lock_bh(&local->filter_lock); | |
398 | __dev_addr_unsync(&local->mc_list, &local->mc_count, | |
399 | &dev->mc_list, &dev->mc_count); | |
3b8d81e0 JB |
400 | spin_unlock_bh(&local->filter_lock); |
401 | netif_addr_unlock_bh(dev); | |
402 | ||
3ac64bee JB |
403 | ieee80211_configure_filter(local); |
404 | ||
7cbf0ba5 VN |
405 | del_timer_sync(&local->dynamic_ps_timer); |
406 | cancel_work_sync(&local->dynamic_ps_enable_work); | |
0d143fe1 JB |
407 | |
408 | /* APs need special treatment */ | |
409 | if (sdata->vif.type == NL80211_IFTYPE_AP) { | |
57c9fff3 | 410 | struct ieee80211_sub_if_data *vlan, *tmpsdata; |
0d143fe1 JB |
411 | struct beacon_data *old_beacon = sdata->u.ap.beacon; |
412 | ||
413 | /* remove beacon */ | |
414 | rcu_assign_pointer(sdata->u.ap.beacon, NULL); | |
415 | synchronize_rcu(); | |
416 | kfree(old_beacon); | |
417 | ||
418 | /* down all dependent devices, that is VLANs */ | |
57c9fff3 | 419 | list_for_each_entry_safe(vlan, tmpsdata, &sdata->u.ap.vlans, |
0d143fe1 JB |
420 | u.vlan.list) |
421 | dev_close(vlan->dev); | |
422 | WARN_ON(!list_empty(&sdata->u.ap.vlans)); | |
423 | } | |
424 | ||
425 | local->open_count--; | |
426 | ||
427 | switch (sdata->vif.type) { | |
428 | case NL80211_IFTYPE_AP_VLAN: | |
429 | list_del(&sdata->u.vlan.list); | |
430 | /* no need to tell driver */ | |
431 | break; | |
432 | case NL80211_IFTYPE_MONITOR: | |
433 | if (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES) { | |
434 | local->cooked_mntrs--; | |
435 | break; | |
436 | } | |
437 | ||
438 | local->monitors--; | |
e8975581 | 439 | if (local->monitors == 0) { |
0869aea0 JB |
440 | local->hw.conf.flags &= ~IEEE80211_CONF_MONITOR; |
441 | hw_reconf_flags |= IEEE80211_CONF_CHANGE_MONITOR; | |
e8975581 | 442 | } |
0d143fe1 JB |
443 | |
444 | if (sdata->u.mntr_flags & MONITOR_FLAG_FCSFAIL) | |
445 | local->fif_fcsfail--; | |
446 | if (sdata->u.mntr_flags & MONITOR_FLAG_PLCPFAIL) | |
447 | local->fif_plcpfail--; | |
e3b90ca2 IP |
448 | if (sdata->u.mntr_flags & MONITOR_FLAG_CONTROL) { |
449 | local->fif_pspoll--; | |
0d143fe1 | 450 | local->fif_control--; |
e3b90ca2 | 451 | } |
0d143fe1 JB |
452 | if (sdata->u.mntr_flags & MONITOR_FLAG_OTHER_BSS) |
453 | local->fif_other_bss--; | |
454 | ||
0d143fe1 | 455 | ieee80211_configure_filter(local); |
0d143fe1 JB |
456 | break; |
457 | case NL80211_IFTYPE_STATION: | |
46900298 JB |
458 | del_timer_sync(&sdata->u.mgd.chswitch_timer); |
459 | del_timer_sync(&sdata->u.mgd.timer); | |
0e2b6286 JB |
460 | del_timer_sync(&sdata->u.mgd.conn_mon_timer); |
461 | del_timer_sync(&sdata->u.mgd.bcn_mon_timer); | |
0d143fe1 | 462 | /* |
0e2b6286 JB |
463 | * If any of the timers fired while we waited for it, it will |
464 | * have queued its work. Now the work will be running again | |
0d143fe1 JB |
465 | * but will not rearm the timer again because it checks |
466 | * whether the interface is running, which, at this point, | |
467 | * it no longer is. | |
468 | */ | |
46900298 JB |
469 | cancel_work_sync(&sdata->u.mgd.work); |
470 | cancel_work_sync(&sdata->u.mgd.chswitch_work); | |
0e2b6286 | 471 | cancel_work_sync(&sdata->u.mgd.monitor_work); |
04de8381 KV |
472 | cancel_work_sync(&sdata->u.mgd.beacon_loss_work); |
473 | ||
0d143fe1 JB |
474 | /* |
475 | * When we get here, the interface is marked down. | |
476 | * Call synchronize_rcu() to wait for the RX path | |
477 | * should it be using the interface and enqueuing | |
478 | * frames at this very time on another CPU. | |
479 | */ | |
480 | synchronize_rcu(); | |
46900298 | 481 | skb_queue_purge(&sdata->u.mgd.skb_queue); |
46900298 JB |
482 | /* fall through */ |
483 | case NL80211_IFTYPE_ADHOC: | |
484 | if (sdata->vif.type == NL80211_IFTYPE_ADHOC) { | |
46900298 JB |
485 | del_timer_sync(&sdata->u.ibss.timer); |
486 | cancel_work_sync(&sdata->u.ibss.work); | |
487 | synchronize_rcu(); | |
488 | skb_queue_purge(&sdata->u.ibss.skb_queue); | |
489 | } | |
0d143fe1 JB |
490 | /* fall through */ |
491 | case NL80211_IFTYPE_MESH_POINT: | |
492 | if (ieee80211_vif_is_mesh(&sdata->vif)) { | |
a3c9aa51 AY |
493 | /* other_bss and allmulti are always set on mesh |
494 | * ifaces */ | |
495 | local->fif_other_bss--; | |
0d143fe1 | 496 | atomic_dec(&local->iff_allmultis); |
a3c9aa51 | 497 | |
a3c9aa51 | 498 | ieee80211_configure_filter(local); |
a3c9aa51 | 499 | |
0d143fe1 JB |
500 | ieee80211_stop_mesh(sdata); |
501 | } | |
502 | /* fall through */ | |
503 | default: | |
15db0b7f JB |
504 | if (local->scan_sdata == sdata) |
505 | ieee80211_scan_cancel(local); | |
0d143fe1 | 506 | |
97af7432 BC |
507 | /* |
508 | * Disable beaconing for AP and mesh, IBSS can't | |
509 | * still be joined to a network at this point. | |
510 | */ | |
511 | if (sdata->vif.type == NL80211_IFTYPE_AP || | |
512 | sdata->vif.type == NL80211_IFTYPE_MESH_POINT) { | |
513 | ieee80211_bss_info_change_notify(sdata, | |
514 | BSS_CHANGED_BEACON_ENABLED); | |
515 | } | |
516 | ||
0d143fe1 JB |
517 | conf.vif = &sdata->vif; |
518 | conf.type = sdata->vif.type; | |
519 | conf.mac_addr = dev->dev_addr; | |
520 | /* disable all keys for as long as this netdev is down */ | |
521 | ieee80211_disable_keys(sdata); | |
24487981 | 522 | drv_remove_interface(local, &conf); |
0d143fe1 JB |
523 | } |
524 | ||
525 | sdata->bss = NULL; | |
526 | ||
5cff20e6 JB |
527 | hw_reconf_flags |= __ieee80211_recalc_idle(local); |
528 | ||
529 | ieee80211_recalc_ps(local, -1); | |
530 | ||
0d143fe1 | 531 | if (local->open_count == 0) { |
ea77f12f | 532 | ieee80211_clear_tx_pending(local); |
84f6a01c | 533 | ieee80211_stop_device(local); |
0d143fe1 | 534 | |
e8975581 JB |
535 | /* no reconfiguring after stop! */ |
536 | hw_reconf_flags = 0; | |
0d143fe1 JB |
537 | } |
538 | ||
e8975581 JB |
539 | /* do after stop to avoid reconfiguring when we stop anyway */ |
540 | if (hw_reconf_flags) | |
541 | ieee80211_hw_config(local, hw_reconf_flags); | |
542 | ||
5061b0c2 JB |
543 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
544 | for (i = 0; i < IEEE80211_MAX_QUEUES; i++) { | |
545 | skb_queue_walk_safe(&local->pending[i], skb, tmp) { | |
546 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); | |
547 | if (info->control.vif == &sdata->vif) { | |
548 | __skb_unlink(skb, &local->pending[i]); | |
549 | dev_kfree_skb_irq(skb); | |
550 | } | |
551 | } | |
552 | } | |
553 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
554 | ||
0d143fe1 JB |
555 | return 0; |
556 | } | |
557 | ||
558 | static void ieee80211_set_multicast_list(struct net_device *dev) | |
559 | { | |
0d143fe1 | 560 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
b4a4bf5d | 561 | struct ieee80211_local *local = sdata->local; |
0d143fe1 JB |
562 | int allmulti, promisc, sdata_allmulti, sdata_promisc; |
563 | ||
564 | allmulti = !!(dev->flags & IFF_ALLMULTI); | |
565 | promisc = !!(dev->flags & IFF_PROMISC); | |
566 | sdata_allmulti = !!(sdata->flags & IEEE80211_SDATA_ALLMULTI); | |
567 | sdata_promisc = !!(sdata->flags & IEEE80211_SDATA_PROMISC); | |
568 | ||
569 | if (allmulti != sdata_allmulti) { | |
570 | if (dev->flags & IFF_ALLMULTI) | |
571 | atomic_inc(&local->iff_allmultis); | |
572 | else | |
573 | atomic_dec(&local->iff_allmultis); | |
574 | sdata->flags ^= IEEE80211_SDATA_ALLMULTI; | |
575 | } | |
576 | ||
577 | if (promisc != sdata_promisc) { | |
578 | if (dev->flags & IFF_PROMISC) | |
579 | atomic_inc(&local->iff_promiscs); | |
580 | else | |
581 | atomic_dec(&local->iff_promiscs); | |
582 | sdata->flags ^= IEEE80211_SDATA_PROMISC; | |
583 | } | |
3b8d81e0 JB |
584 | spin_lock_bh(&local->filter_lock); |
585 | __dev_addr_sync(&local->mc_list, &local->mc_count, | |
586 | &dev->mc_list, &dev->mc_count); | |
3b8d81e0 | 587 | spin_unlock_bh(&local->filter_lock); |
3ac64bee | 588 | ieee80211_queue_work(&local->hw, &local->reconfig_filter); |
0d143fe1 JB |
589 | } |
590 | ||
75636525 JB |
591 | /* |
592 | * Called when the netdev is removed or, by the code below, before | |
593 | * the interface type changes. | |
594 | */ | |
595 | static void ieee80211_teardown_sdata(struct net_device *dev) | |
f0706e82 | 596 | { |
75636525 JB |
597 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
598 | struct ieee80211_local *local = sdata->local; | |
599 | struct beacon_data *beacon; | |
600 | struct sk_buff *skb; | |
601 | int flushed; | |
f0706e82 JB |
602 | int i; |
603 | ||
75636525 JB |
604 | /* free extra data */ |
605 | ieee80211_free_keys(sdata); | |
606 | ||
aee14ceb JM |
607 | ieee80211_debugfs_remove_netdev(sdata); |
608 | ||
f0706e82 | 609 | for (i = 0; i < IEEE80211_FRAGMENT_MAX; i++) |
75636525 JB |
610 | __skb_queue_purge(&sdata->fragments[i].skb_list); |
611 | sdata->fragment_next = 0; | |
11a843b7 | 612 | |
75636525 | 613 | switch (sdata->vif.type) { |
05c914fe | 614 | case NL80211_IFTYPE_AP: |
75636525 JB |
615 | beacon = sdata->u.ap.beacon; |
616 | rcu_assign_pointer(sdata->u.ap.beacon, NULL); | |
617 | synchronize_rcu(); | |
618 | kfree(beacon); | |
3e122be0 | 619 | |
75636525 JB |
620 | while ((skb = skb_dequeue(&sdata->u.ap.ps_bc_buf))) { |
621 | local->total_ps_buffered--; | |
622 | dev_kfree_skb(skb); | |
623 | } | |
624 | ||
625 | break; | |
05c914fe | 626 | case NL80211_IFTYPE_MESH_POINT: |
75636525 | 627 | if (ieee80211_vif_is_mesh(&sdata->vif)) |
f698d856 | 628 | mesh_rmc_free(sdata); |
472dbc45 | 629 | break; |
05c914fe | 630 | case NL80211_IFTYPE_ADHOC: |
af8cdcd8 JB |
631 | if (WARN_ON(sdata->u.ibss.presp)) |
632 | kfree_skb(sdata->u.ibss.presp); | |
46900298 JB |
633 | break; |
634 | case NL80211_IFTYPE_STATION: | |
05c914fe JB |
635 | case NL80211_IFTYPE_WDS: |
636 | case NL80211_IFTYPE_AP_VLAN: | |
637 | case NL80211_IFTYPE_MONITOR: | |
75636525 | 638 | break; |
05c914fe JB |
639 | case NL80211_IFTYPE_UNSPECIFIED: |
640 | case __NL80211_IFTYPE_AFTER_LAST: | |
75636525 JB |
641 | BUG(); |
642 | break; | |
643 | } | |
644 | ||
645 | flushed = sta_info_flush(local, sdata); | |
646 | WARN_ON(flushed); | |
f0706e82 JB |
647 | } |
648 | ||
cf0277e7 JB |
649 | static u16 ieee80211_netdev_select_queue(struct net_device *dev, |
650 | struct sk_buff *skb) | |
651 | { | |
652 | return ieee80211_select_queue(IEEE80211_DEV_TO_SUB_IF(dev), skb); | |
653 | } | |
654 | ||
587e729e JB |
655 | static const struct net_device_ops ieee80211_dataif_ops = { |
656 | .ndo_open = ieee80211_open, | |
657 | .ndo_stop = ieee80211_stop, | |
658 | .ndo_uninit = ieee80211_teardown_sdata, | |
659 | .ndo_start_xmit = ieee80211_subif_start_xmit, | |
660 | .ndo_set_multicast_list = ieee80211_set_multicast_list, | |
661 | .ndo_change_mtu = ieee80211_change_mtu, | |
662 | .ndo_set_mac_address = eth_mac_addr, | |
cf0277e7 | 663 | .ndo_select_queue = ieee80211_netdev_select_queue, |
587e729e JB |
664 | }; |
665 | ||
cf0277e7 JB |
666 | static u16 ieee80211_monitor_select_queue(struct net_device *dev, |
667 | struct sk_buff *skb) | |
668 | { | |
669 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
670 | struct ieee80211_local *local = sdata->local; | |
671 | struct ieee80211_hdr *hdr; | |
672 | struct ieee80211_radiotap_header *rtap = (void *)skb->data; | |
673 | ||
674 | if (local->hw.queues < 4) | |
675 | return 0; | |
676 | ||
677 | if (skb->len < 4 || | |
678 | skb->len < rtap->it_len + 2 /* frame control */) | |
679 | return 0; /* doesn't matter, frame will be dropped */ | |
680 | ||
681 | hdr = (void *)((u8 *)skb->data + rtap->it_len); | |
682 | ||
683 | if (!ieee80211_is_data(hdr->frame_control)) { | |
684 | skb->priority = 7; | |
685 | return ieee802_1d_to_ac[skb->priority]; | |
686 | } | |
687 | ||
688 | return ieee80211_downgrade_queue(local, skb); | |
689 | } | |
690 | ||
587e729e JB |
691 | static const struct net_device_ops ieee80211_monitorif_ops = { |
692 | .ndo_open = ieee80211_open, | |
693 | .ndo_stop = ieee80211_stop, | |
694 | .ndo_uninit = ieee80211_teardown_sdata, | |
695 | .ndo_start_xmit = ieee80211_monitor_start_xmit, | |
696 | .ndo_set_multicast_list = ieee80211_set_multicast_list, | |
697 | .ndo_change_mtu = ieee80211_change_mtu, | |
698 | .ndo_set_mac_address = eth_mac_addr, | |
cf0277e7 | 699 | .ndo_select_queue = ieee80211_monitor_select_queue, |
587e729e JB |
700 | }; |
701 | ||
702 | static void ieee80211_if_setup(struct net_device *dev) | |
703 | { | |
704 | ether_setup(dev); | |
705 | dev->netdev_ops = &ieee80211_dataif_ops; | |
587e729e JB |
706 | dev->destructor = free_netdev; |
707 | } | |
708 | ||
75636525 JB |
709 | /* |
710 | * Helper function to initialise an interface to a specific type. | |
711 | */ | |
712 | static void ieee80211_setup_sdata(struct ieee80211_sub_if_data *sdata, | |
05c914fe | 713 | enum nl80211_iftype type) |
f0706e82 | 714 | { |
75636525 JB |
715 | /* clear type-dependent union */ |
716 | memset(&sdata->u, 0, sizeof(sdata->u)); | |
717 | ||
718 | /* and set some type-dependent values */ | |
719 | sdata->vif.type = type; | |
587e729e | 720 | sdata->dev->netdev_ops = &ieee80211_dataif_ops; |
60719ffd | 721 | sdata->wdev.iftype = type; |
75636525 JB |
722 | |
723 | /* only monitor differs */ | |
724 | sdata->dev->type = ARPHRD_ETHER; | |
725 | ||
726 | switch (type) { | |
05c914fe | 727 | case NL80211_IFTYPE_AP: |
75636525 JB |
728 | skb_queue_head_init(&sdata->u.ap.ps_bc_buf); |
729 | INIT_LIST_HEAD(&sdata->u.ap.vlans); | |
730 | break; | |
05c914fe | 731 | case NL80211_IFTYPE_STATION: |
9c6bd790 | 732 | ieee80211_sta_setup_sdata(sdata); |
472dbc45 | 733 | break; |
46900298 JB |
734 | case NL80211_IFTYPE_ADHOC: |
735 | ieee80211_ibss_setup_sdata(sdata); | |
736 | break; | |
05c914fe | 737 | case NL80211_IFTYPE_MESH_POINT: |
75636525 JB |
738 | if (ieee80211_vif_is_mesh(&sdata->vif)) |
739 | ieee80211_mesh_init_sdata(sdata); | |
740 | break; | |
05c914fe | 741 | case NL80211_IFTYPE_MONITOR: |
75636525 | 742 | sdata->dev->type = ARPHRD_IEEE80211_RADIOTAP; |
587e729e | 743 | sdata->dev->netdev_ops = &ieee80211_monitorif_ops; |
75636525 JB |
744 | sdata->u.mntr_flags = MONITOR_FLAG_CONTROL | |
745 | MONITOR_FLAG_OTHER_BSS; | |
746 | break; | |
05c914fe JB |
747 | case NL80211_IFTYPE_WDS: |
748 | case NL80211_IFTYPE_AP_VLAN: | |
75636525 | 749 | break; |
05c914fe JB |
750 | case NL80211_IFTYPE_UNSPECIFIED: |
751 | case __NL80211_IFTYPE_AFTER_LAST: | |
75636525 JB |
752 | BUG(); |
753 | break; | |
754 | } | |
755 | ||
756 | ieee80211_debugfs_add_netdev(sdata); | |
757 | } | |
758 | ||
f3947e2d | 759 | int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, |
05c914fe | 760 | enum nl80211_iftype type) |
75636525 | 761 | { |
f3947e2d JB |
762 | ASSERT_RTNL(); |
763 | ||
764 | if (type == sdata->vif.type) | |
765 | return 0; | |
766 | ||
e60c7744 | 767 | /* Setting ad-hoc mode on non-IBSS channel is not supported. */ |
dcebf45c PR |
768 | if (sdata->local->oper_channel->flags & IEEE80211_CHAN_NO_IBSS && |
769 | type == NL80211_IFTYPE_ADHOC) | |
e60c7744 JB |
770 | return -EOPNOTSUPP; |
771 | ||
f3947e2d JB |
772 | /* |
773 | * We could, here, on changes between IBSS/STA/MESH modes, | |
774 | * invoke an MLME function instead that disassociates etc. | |
775 | * and goes into the requested mode. | |
776 | */ | |
777 | ||
778 | if (netif_running(sdata->dev)) | |
779 | return -EBUSY; | |
780 | ||
75636525 JB |
781 | /* Purge and reset type-dependent state. */ |
782 | ieee80211_teardown_sdata(sdata->dev); | |
783 | ieee80211_setup_sdata(sdata, type); | |
784 | ||
785 | /* reset some values that shouldn't be kept across type changes */ | |
bda3933a | 786 | sdata->vif.bss_conf.basic_rates = |
96dd22ac JB |
787 | ieee80211_mandatory_rates(sdata->local, |
788 | sdata->local->hw.conf.channel->band); | |
75636525 | 789 | sdata->drop_unencrypted = 0; |
9bc383de JB |
790 | if (type == NL80211_IFTYPE_STATION) |
791 | sdata->u.mgd.use_4addr = false; | |
f3947e2d JB |
792 | |
793 | return 0; | |
f0706e82 JB |
794 | } |
795 | ||
3e122be0 | 796 | int ieee80211_if_add(struct ieee80211_local *local, const char *name, |
05c914fe | 797 | struct net_device **new_dev, enum nl80211_iftype type, |
ee385855 | 798 | struct vif_params *params) |
f0706e82 JB |
799 | { |
800 | struct net_device *ndev; | |
f0706e82 | 801 | struct ieee80211_sub_if_data *sdata = NULL; |
75636525 | 802 | int ret, i; |
f0706e82 JB |
803 | |
804 | ASSERT_RTNL(); | |
75636525 | 805 | |
cf0277e7 JB |
806 | ndev = alloc_netdev_mq(sizeof(*sdata) + local->hw.vif_data_size, |
807 | name, ieee80211_if_setup, local->hw.queues); | |
f0706e82 JB |
808 | if (!ndev) |
809 | return -ENOMEM; | |
a272a720 | 810 | dev_net_set(ndev, wiphy_net(local->hw.wiphy)); |
f0706e82 | 811 | |
f3994ece JB |
812 | ndev->needed_headroom = local->tx_headroom + |
813 | 4*6 /* four MAC addresses */ | |
814 | + 2 + 2 + 2 + 2 /* ctl, dur, seq, qos */ | |
815 | + 6 /* mesh */ | |
816 | + 8 /* rfc1042/bridge tunnel */ | |
817 | - ETH_HLEN /* ethernet hard_header_len */ | |
818 | + IEEE80211_ENCRYPT_HEADROOM; | |
819 | ndev->needed_tailroom = IEEE80211_ENCRYPT_TAILROOM; | |
820 | ||
f0706e82 JB |
821 | ret = dev_alloc_name(ndev, ndev->name); |
822 | if (ret < 0) | |
823 | goto fail; | |
824 | ||
825 | memcpy(ndev->dev_addr, local->hw.wiphy->perm_addr, ETH_ALEN); | |
0adc23f5 | 826 | memcpy(ndev->perm_addr, ndev->dev_addr, ETH_ALEN); |
f0706e82 JB |
827 | SET_NETDEV_DEV(ndev, wiphy_dev(local->hw.wiphy)); |
828 | ||
3e122be0 JB |
829 | /* don't use IEEE80211_DEV_TO_SUB_IF because it checks too much */ |
830 | sdata = netdev_priv(ndev); | |
f0706e82 | 831 | ndev->ieee80211_ptr = &sdata->wdev; |
75636525 JB |
832 | |
833 | /* initialise type-independent data */ | |
f0706e82 | 834 | sdata->wdev.wiphy = local->hw.wiphy; |
f0706e82 | 835 | sdata->local = local; |
75636525 JB |
836 | sdata->dev = ndev; |
837 | ||
838 | for (i = 0; i < IEEE80211_FRAGMENT_MAX; i++) | |
839 | skb_queue_head_init(&sdata->fragments[i].skb_list); | |
840 | ||
841 | INIT_LIST_HEAD(&sdata->key_list); | |
842 | ||
843 | sdata->force_unicast_rateidx = -1; | |
844 | sdata->max_ratectrl_rateidx = -1; | |
845 | ||
846 | /* setup type-dependent data */ | |
847 | ieee80211_setup_sdata(sdata, type); | |
f0706e82 | 848 | |
9bc383de JB |
849 | if (params) { |
850 | ndev->ieee80211_ptr->use_4addr = params->use_4addr; | |
851 | if (type == NL80211_IFTYPE_STATION) | |
852 | sdata->u.mgd.use_4addr = params->use_4addr; | |
853 | } | |
854 | ||
f0706e82 JB |
855 | ret = register_netdevice(ndev); |
856 | if (ret) | |
857 | goto fail; | |
858 | ||
902acc78 JB |
859 | if (ieee80211_vif_is_mesh(&sdata->vif) && |
860 | params && params->mesh_id_len) | |
472dbc45 JB |
861 | ieee80211_sdata_set_mesh_id(sdata, |
862 | params->mesh_id_len, | |
863 | params->mesh_id); | |
ee385855 | 864 | |
c771c9d8 | 865 | mutex_lock(&local->iflist_mtx); |
79010420 | 866 | list_add_tail_rcu(&sdata->list, &local->interfaces); |
c771c9d8 | 867 | mutex_unlock(&local->iflist_mtx); |
79010420 | 868 | |
f0706e82 JB |
869 | if (new_dev) |
870 | *new_dev = ndev; | |
f0706e82 | 871 | |
f0706e82 JB |
872 | return 0; |
873 | ||
75636525 | 874 | fail: |
f0706e82 JB |
875 | free_netdev(ndev); |
876 | return ret; | |
877 | } | |
878 | ||
f698d856 | 879 | void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata) |
f0706e82 | 880 | { |
f0706e82 | 881 | ASSERT_RTNL(); |
11a843b7 | 882 | |
c771c9d8 | 883 | mutex_lock(&sdata->local->iflist_mtx); |
75636525 | 884 | list_del_rcu(&sdata->list); |
c771c9d8 JB |
885 | mutex_unlock(&sdata->local->iflist_mtx); |
886 | ||
75636525 | 887 | synchronize_rcu(); |
f698d856 | 888 | unregister_netdevice(sdata->dev); |
f0706e82 JB |
889 | } |
890 | ||
75636525 JB |
891 | /* |
892 | * Remove all interfaces, may only be called at hardware unregistration | |
893 | * time because it doesn't do RCU-safe list removals. | |
894 | */ | |
895 | void ieee80211_remove_interfaces(struct ieee80211_local *local) | |
f0706e82 | 896 | { |
75636525 | 897 | struct ieee80211_sub_if_data *sdata, *tmp; |
efe117ab | 898 | LIST_HEAD(unreg_list); |
f0706e82 JB |
899 | |
900 | ASSERT_RTNL(); | |
901 | ||
efe117ab | 902 | mutex_lock(&local->iflist_mtx); |
75636525 JB |
903 | list_for_each_entry_safe(sdata, tmp, &local->interfaces, list) { |
904 | list_del(&sdata->list); | |
c771c9d8 | 905 | |
efe117ab | 906 | unregister_netdevice_queue(sdata->dev, &unreg_list); |
f0706e82 | 907 | } |
efe117ab ED |
908 | mutex_unlock(&local->iflist_mtx); |
909 | unregister_netdevice_many(&unreg_list); | |
f0706e82 | 910 | } |
5cff20e6 JB |
911 | |
912 | static u32 ieee80211_idle_off(struct ieee80211_local *local, | |
913 | const char *reason) | |
914 | { | |
915 | if (!(local->hw.conf.flags & IEEE80211_CONF_IDLE)) | |
916 | return 0; | |
917 | ||
918 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG | |
919 | printk(KERN_DEBUG "%s: device no longer idle - %s\n", | |
920 | wiphy_name(local->hw.wiphy), reason); | |
921 | #endif | |
922 | ||
923 | local->hw.conf.flags &= ~IEEE80211_CONF_IDLE; | |
924 | return IEEE80211_CONF_CHANGE_IDLE; | |
925 | } | |
926 | ||
927 | static u32 ieee80211_idle_on(struct ieee80211_local *local) | |
928 | { | |
929 | if (local->hw.conf.flags & IEEE80211_CONF_IDLE) | |
930 | return 0; | |
931 | ||
932 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG | |
933 | printk(KERN_DEBUG "%s: device now idle\n", | |
934 | wiphy_name(local->hw.wiphy)); | |
935 | #endif | |
936 | ||
937 | local->hw.conf.flags |= IEEE80211_CONF_IDLE; | |
938 | return IEEE80211_CONF_CHANGE_IDLE; | |
939 | } | |
940 | ||
941 | u32 __ieee80211_recalc_idle(struct ieee80211_local *local) | |
942 | { | |
943 | struct ieee80211_sub_if_data *sdata; | |
944 | int count = 0; | |
945 | ||
fbe9c429 | 946 | if (local->scanning) |
5cff20e6 JB |
947 | return ieee80211_idle_off(local, "scanning"); |
948 | ||
949 | list_for_each_entry(sdata, &local->interfaces, list) { | |
950 | if (!netif_running(sdata->dev)) | |
951 | continue; | |
952 | /* do not count disabled managed interfaces */ | |
953 | if (sdata->vif.type == NL80211_IFTYPE_STATION && | |
77fdaa12 JB |
954 | !sdata->u.mgd.associated && |
955 | list_empty(&sdata->u.mgd.work_list)) | |
5cff20e6 JB |
956 | continue; |
957 | /* do not count unused IBSS interfaces */ | |
958 | if (sdata->vif.type == NL80211_IFTYPE_ADHOC && | |
959 | !sdata->u.ibss.ssid_len) | |
960 | continue; | |
961 | /* count everything else */ | |
962 | count++; | |
963 | } | |
964 | ||
965 | if (!count) | |
966 | return ieee80211_idle_on(local); | |
967 | else | |
968 | return ieee80211_idle_off(local, "in use"); | |
969 | ||
970 | return 0; | |
971 | } | |
972 | ||
973 | void ieee80211_recalc_idle(struct ieee80211_local *local) | |
974 | { | |
975 | u32 chg; | |
976 | ||
977 | mutex_lock(&local->iflist_mtx); | |
978 | chg = __ieee80211_recalc_idle(local); | |
979 | mutex_unlock(&local->iflist_mtx); | |
58905ca5 JB |
980 | if (chg) |
981 | ieee80211_hw_config(local, chg); | |
5cff20e6 | 982 | } |