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Commit | Line | Data |
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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 | */ | |
5a0e3ad6 | 13 | #include <linux/slab.h> |
f0706e82 JB |
14 | #include <linux/kernel.h> |
15 | #include <linux/if_arp.h> | |
16 | #include <linux/netdevice.h> | |
17 | #include <linux/rtnetlink.h> | |
18 | #include <net/mac80211.h> | |
cf0277e7 | 19 | #include <net/ieee80211_radiotap.h> |
f0706e82 JB |
20 | #include "ieee80211_i.h" |
21 | #include "sta_info.h" | |
e9f207f0 | 22 | #include "debugfs_netdev.h" |
ee385855 | 23 | #include "mesh.h" |
0d143fe1 | 24 | #include "led.h" |
24487981 | 25 | #include "driver-ops.h" |
cf0277e7 | 26 | #include "wme.h" |
1be7fe8d | 27 | #include "rate.h" |
0d143fe1 | 28 | |
c771c9d8 JB |
29 | /** |
30 | * DOC: Interface list locking | |
31 | * | |
32 | * The interface list in each struct ieee80211_local is protected | |
33 | * three-fold: | |
34 | * | |
35 | * (1) modifications may only be done under the RTNL | |
36 | * (2) modifications and readers are protected against each other by | |
37 | * the iflist_mtx. | |
38 | * (3) modifications are done in an RCU manner so atomic readers | |
39 | * can traverse the list in RCU-safe blocks. | |
40 | * | |
41 | * As a consequence, reads (traversals) of the list can be protected | |
42 | * by either the RTNL, the iflist_mtx or RCU. | |
43 | */ | |
44 | ||
45 | ||
0d143fe1 JB |
46 | static int ieee80211_change_mtu(struct net_device *dev, int new_mtu) |
47 | { | |
48 | int meshhdrlen; | |
49 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
50 | ||
51 | meshhdrlen = (sdata->vif.type == NL80211_IFTYPE_MESH_POINT) ? 5 : 0; | |
52 | ||
53 | /* FIX: what would be proper limits for MTU? | |
54 | * This interface uses 802.3 frames. */ | |
55 | if (new_mtu < 256 || | |
56 | new_mtu > IEEE80211_MAX_DATA_LEN - 24 - 6 - meshhdrlen) { | |
57 | return -EINVAL; | |
58 | } | |
59 | ||
0d143fe1 JB |
60 | dev->mtu = new_mtu; |
61 | return 0; | |
62 | } | |
63 | ||
47846c9b JB |
64 | static int ieee80211_change_mac(struct net_device *dev, void *addr) |
65 | { | |
66 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
fc5f7577 | 67 | struct sockaddr *sa = addr; |
47846c9b JB |
68 | int ret; |
69 | ||
9607e6b6 | 70 | if (ieee80211_sdata_running(sdata)) |
47846c9b JB |
71 | return -EBUSY; |
72 | ||
fc5f7577 | 73 | ret = eth_mac_addr(dev, sa); |
47846c9b JB |
74 | |
75 | if (ret == 0) | |
fc5f7577 | 76 | memcpy(sdata->vif.addr, sa->sa_data, ETH_ALEN); |
47846c9b JB |
77 | |
78 | return ret; | |
79 | } | |
80 | ||
0d143fe1 JB |
81 | static inline int identical_mac_addr_allowed(int type1, int type2) |
82 | { | |
83 | return type1 == NL80211_IFTYPE_MONITOR || | |
84 | type2 == NL80211_IFTYPE_MONITOR || | |
85 | (type1 == NL80211_IFTYPE_AP && type2 == NL80211_IFTYPE_WDS) || | |
86 | (type1 == NL80211_IFTYPE_WDS && | |
87 | (type2 == NL80211_IFTYPE_WDS || | |
88 | type2 == NL80211_IFTYPE_AP)) || | |
89 | (type1 == NL80211_IFTYPE_AP && type2 == NL80211_IFTYPE_AP_VLAN) || | |
90 | (type1 == NL80211_IFTYPE_AP_VLAN && | |
91 | (type2 == NL80211_IFTYPE_AP || | |
92 | type2 == NL80211_IFTYPE_AP_VLAN)); | |
93 | } | |
94 | ||
87490f6d JB |
95 | static int ieee80211_check_concurrent_iface(struct ieee80211_sub_if_data *sdata, |
96 | enum nl80211_iftype iftype) | |
0d143fe1 | 97 | { |
b4a4bf5d | 98 | struct ieee80211_local *local = sdata->local; |
87490f6d JB |
99 | struct ieee80211_sub_if_data *nsdata; |
100 | struct net_device *dev = sdata->dev; | |
0d143fe1 | 101 | |
87490f6d | 102 | ASSERT_RTNL(); |
0d143fe1 JB |
103 | |
104 | /* we hold the RTNL here so can safely walk the list */ | |
105 | list_for_each_entry(nsdata, &local->interfaces, list) { | |
106 | struct net_device *ndev = nsdata->dev; | |
107 | ||
9607e6b6 | 108 | if (ndev != dev && ieee80211_sdata_running(nsdata)) { |
0d143fe1 JB |
109 | /* |
110 | * Allow only a single IBSS interface to be up at any | |
111 | * time. This is restricted because beacon distribution | |
112 | * cannot work properly if both are in the same IBSS. | |
113 | * | |
114 | * To remove this restriction we'd have to disallow them | |
115 | * from setting the same SSID on different IBSS interfaces | |
116 | * belonging to the same hardware. Then, however, we're | |
117 | * faced with having to adopt two different TSF timers... | |
118 | */ | |
87490f6d | 119 | if (iftype == NL80211_IFTYPE_ADHOC && |
0d143fe1 JB |
120 | nsdata->vif.type == NL80211_IFTYPE_ADHOC) |
121 | return -EBUSY; | |
122 | ||
123 | /* | |
124 | * The remaining checks are only performed for interfaces | |
125 | * with the same MAC address. | |
126 | */ | |
b203ca39 | 127 | if (!ether_addr_equal(dev->dev_addr, ndev->dev_addr)) |
0d143fe1 JB |
128 | continue; |
129 | ||
130 | /* | |
131 | * check whether it may have the same address | |
132 | */ | |
87490f6d | 133 | if (!identical_mac_addr_allowed(iftype, |
0d143fe1 JB |
134 | nsdata->vif.type)) |
135 | return -ENOTUNIQ; | |
136 | ||
137 | /* | |
138 | * can only add VLANs to enabled APs | |
139 | */ | |
87490f6d | 140 | if (iftype == NL80211_IFTYPE_AP_VLAN && |
0d143fe1 JB |
141 | nsdata->vif.type == NL80211_IFTYPE_AP) |
142 | sdata->bss = &nsdata->u.ap; | |
143 | } | |
144 | } | |
145 | ||
87490f6d JB |
146 | return 0; |
147 | } | |
148 | ||
3a25a8c8 JB |
149 | static int ieee80211_check_queues(struct ieee80211_sub_if_data *sdata) |
150 | { | |
151 | int n_queues = sdata->local->hw.queues; | |
152 | int i; | |
153 | ||
154 | for (i = 0; i < IEEE80211_NUM_ACS; i++) { | |
155 | if (WARN_ON_ONCE(sdata->vif.hw_queue[i] == | |
156 | IEEE80211_INVAL_HW_QUEUE)) | |
157 | return -EINVAL; | |
158 | if (WARN_ON_ONCE(sdata->vif.hw_queue[i] >= | |
159 | n_queues)) | |
160 | return -EINVAL; | |
161 | } | |
162 | ||
bb3e10fb LC |
163 | if ((sdata->vif.type != NL80211_IFTYPE_AP) || |
164 | !(sdata->local->hw.flags & IEEE80211_HW_QUEUE_CONTROL)) { | |
3a25a8c8 JB |
165 | sdata->vif.cab_queue = IEEE80211_INVAL_HW_QUEUE; |
166 | return 0; | |
167 | } | |
168 | ||
169 | if (WARN_ON_ONCE(sdata->vif.cab_queue == IEEE80211_INVAL_HW_QUEUE)) | |
170 | return -EINVAL; | |
171 | ||
172 | if (WARN_ON_ONCE(sdata->vif.cab_queue >= n_queues)) | |
173 | return -EINVAL; | |
174 | ||
175 | return 0; | |
176 | } | |
177 | ||
85416a4f CL |
178 | void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata, |
179 | const int offset) | |
180 | { | |
181 | struct ieee80211_local *local = sdata->local; | |
182 | u32 flags = sdata->u.mntr_flags; | |
183 | ||
184 | #define ADJUST(_f, _s) do { \ | |
185 | if (flags & MONITOR_FLAG_##_f) \ | |
186 | local->fif_##_s += offset; \ | |
187 | } while (0) | |
188 | ||
189 | ADJUST(FCSFAIL, fcsfail); | |
190 | ADJUST(PLCPFAIL, plcpfail); | |
191 | ADJUST(CONTROL, control); | |
192 | ADJUST(CONTROL, pspoll); | |
193 | ADJUST(OTHER_BSS, other_bss); | |
194 | ||
195 | #undef ADJUST | |
196 | } | |
197 | ||
3a25a8c8 JB |
198 | static void ieee80211_set_default_queues(struct ieee80211_sub_if_data *sdata) |
199 | { | |
200 | struct ieee80211_local *local = sdata->local; | |
201 | int i; | |
202 | ||
203 | for (i = 0; i < IEEE80211_NUM_ACS; i++) { | |
204 | if (local->hw.flags & IEEE80211_HW_QUEUE_CONTROL) | |
205 | sdata->vif.hw_queue[i] = IEEE80211_INVAL_HW_QUEUE; | |
a9d3c05c | 206 | else if (local->hw.queues >= IEEE80211_NUM_ACS) |
3a25a8c8 | 207 | sdata->vif.hw_queue[i] = i; |
a9d3c05c JB |
208 | else |
209 | sdata->vif.hw_queue[i] = 0; | |
3a25a8c8 JB |
210 | } |
211 | sdata->vif.cab_queue = IEEE80211_INVAL_HW_QUEUE; | |
212 | } | |
213 | ||
4b6f1dd6 JB |
214 | static int ieee80211_add_virtual_monitor(struct ieee80211_local *local) |
215 | { | |
216 | struct ieee80211_sub_if_data *sdata; | |
217 | int ret; | |
218 | ||
219 | if (!(local->hw.flags & IEEE80211_HW_WANT_MONITOR_VIF)) | |
220 | return 0; | |
221 | ||
222 | if (local->monitor_sdata) | |
223 | return 0; | |
224 | ||
225 | sdata = kzalloc(sizeof(*sdata) + local->hw.vif_data_size, GFP_KERNEL); | |
226 | if (!sdata) | |
227 | return -ENOMEM; | |
228 | ||
229 | /* set up data */ | |
230 | sdata->local = local; | |
231 | sdata->vif.type = NL80211_IFTYPE_MONITOR; | |
232 | snprintf(sdata->name, IFNAMSIZ, "%s-monitor", | |
233 | wiphy_name(local->hw.wiphy)); | |
234 | ||
3a25a8c8 JB |
235 | ieee80211_set_default_queues(sdata); |
236 | ||
4b6f1dd6 JB |
237 | ret = drv_add_interface(local, sdata); |
238 | if (WARN_ON(ret)) { | |
239 | /* ok .. stupid driver, it asked for this! */ | |
240 | kfree(sdata); | |
241 | return ret; | |
242 | } | |
243 | ||
3a25a8c8 JB |
244 | ret = ieee80211_check_queues(sdata); |
245 | if (ret) { | |
246 | kfree(sdata); | |
247 | return ret; | |
248 | } | |
249 | ||
4b6f1dd6 JB |
250 | rcu_assign_pointer(local->monitor_sdata, sdata); |
251 | ||
252 | return 0; | |
253 | } | |
254 | ||
255 | static void ieee80211_del_virtual_monitor(struct ieee80211_local *local) | |
256 | { | |
257 | struct ieee80211_sub_if_data *sdata; | |
258 | ||
259 | if (!(local->hw.flags & IEEE80211_HW_WANT_MONITOR_VIF)) | |
260 | return; | |
261 | ||
262 | sdata = rtnl_dereference(local->monitor_sdata); | |
263 | ||
264 | if (!sdata) | |
265 | return; | |
266 | ||
267 | rcu_assign_pointer(local->monitor_sdata, NULL); | |
268 | synchronize_net(); | |
269 | ||
270 | drv_remove_interface(local, sdata); | |
271 | ||
272 | kfree(sdata); | |
273 | } | |
274 | ||
34d4bc4d JB |
275 | /* |
276 | * NOTE: Be very careful when changing this function, it must NOT return | |
277 | * an error on interface type changes that have been pre-checked, so most | |
278 | * checks should be in ieee80211_check_concurrent_iface. | |
279 | */ | |
280 | static int ieee80211_do_open(struct net_device *dev, bool coming_up) | |
87490f6d JB |
281 | { |
282 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
283 | struct ieee80211_local *local = sdata->local; | |
284 | struct sta_info *sta; | |
285 | u32 changed = 0; | |
286 | int res; | |
287 | u32 hw_reconf_flags = 0; | |
288 | ||
0d143fe1 JB |
289 | switch (sdata->vif.type) { |
290 | case NL80211_IFTYPE_WDS: | |
291 | if (!is_valid_ether_addr(sdata->u.wds.remote_addr)) | |
292 | return -ENOLINK; | |
293 | break; | |
665c93a9 JB |
294 | case NL80211_IFTYPE_AP_VLAN: { |
295 | struct ieee80211_sub_if_data *master; | |
296 | ||
0d143fe1 JB |
297 | if (!sdata->bss) |
298 | return -ENOLINK; | |
665c93a9 | 299 | |
0d143fe1 | 300 | list_add(&sdata->u.vlan.list, &sdata->bss->vlans); |
665c93a9 JB |
301 | |
302 | master = container_of(sdata->bss, | |
303 | struct ieee80211_sub_if_data, u.ap); | |
304 | sdata->control_port_protocol = | |
305 | master->control_port_protocol; | |
306 | sdata->control_port_no_encrypt = | |
307 | master->control_port_no_encrypt; | |
0d143fe1 | 308 | break; |
665c93a9 | 309 | } |
0d143fe1 JB |
310 | case NL80211_IFTYPE_AP: |
311 | sdata->bss = &sdata->u.ap; | |
312 | break; | |
313 | case NL80211_IFTYPE_MESH_POINT: | |
0d143fe1 JB |
314 | case NL80211_IFTYPE_STATION: |
315 | case NL80211_IFTYPE_MONITOR: | |
316 | case NL80211_IFTYPE_ADHOC: | |
317 | /* no special treatment */ | |
318 | break; | |
319 | case NL80211_IFTYPE_UNSPECIFIED: | |
2e161f78 | 320 | case NUM_NL80211_IFTYPES: |
2ca27bcf JB |
321 | case NL80211_IFTYPE_P2P_CLIENT: |
322 | case NL80211_IFTYPE_P2P_GO: | |
0d143fe1 JB |
323 | /* cannot happen */ |
324 | WARN_ON(1); | |
325 | break; | |
326 | } | |
327 | ||
328 | if (local->open_count == 0) { | |
24487981 | 329 | res = drv_start(local); |
0d143fe1 JB |
330 | if (res) |
331 | goto err_del_bss; | |
4e6cbfd0 JL |
332 | if (local->ops->napi_poll) |
333 | napi_enable(&local->napi); | |
e8975581 JB |
334 | /* we're brought up, everything changes */ |
335 | hw_reconf_flags = ~0; | |
1f87f7d3 | 336 | ieee80211_led_radio(local, true); |
67408c8c JB |
337 | ieee80211_mod_tpt_led_trig(local, |
338 | IEEE80211_TPT_LEDTRIG_FL_RADIO, 0); | |
0d143fe1 JB |
339 | } |
340 | ||
341 | /* | |
bf533e0b JB |
342 | * Copy the hopefully now-present MAC address to |
343 | * this interface, if it has the special null one. | |
0d143fe1 | 344 | */ |
bf533e0b JB |
345 | if (is_zero_ether_addr(dev->dev_addr)) { |
346 | memcpy(dev->dev_addr, | |
347 | local->hw.wiphy->perm_addr, | |
348 | ETH_ALEN); | |
349 | memcpy(dev->perm_addr, dev->dev_addr, ETH_ALEN); | |
350 | ||
351 | if (!is_valid_ether_addr(dev->dev_addr)) { | |
4d6c36fa JB |
352 | res = -EADDRNOTAVAIL; |
353 | goto err_stop; | |
0adc23f5 | 354 | } |
0d143fe1 JB |
355 | } |
356 | ||
0d143fe1 JB |
357 | switch (sdata->vif.type) { |
358 | case NL80211_IFTYPE_AP_VLAN: | |
3edaf3e6 JB |
359 | /* no need to tell driver, but set carrier */ |
360 | if (rtnl_dereference(sdata->bss->beacon)) | |
361 | netif_carrier_on(dev); | |
362 | else | |
363 | netif_carrier_off(dev); | |
0d143fe1 JB |
364 | break; |
365 | case NL80211_IFTYPE_MONITOR: | |
366 | if (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES) { | |
367 | local->cooked_mntrs++; | |
368 | break; | |
369 | } | |
370 | ||
4b6f1dd6 JB |
371 | if (local->monitors == 0 && local->open_count == 0) { |
372 | res = ieee80211_add_virtual_monitor(local); | |
373 | if (res) | |
374 | goto err_stop; | |
375 | } | |
376 | ||
0d143fe1 JB |
377 | /* must be before the call to ieee80211_configure_filter */ |
378 | local->monitors++; | |
e8975581 | 379 | if (local->monitors == 1) { |
0869aea0 JB |
380 | local->hw.conf.flags |= IEEE80211_CONF_MONITOR; |
381 | hw_reconf_flags |= IEEE80211_CONF_CHANGE_MONITOR; | |
e8975581 | 382 | } |
0d143fe1 | 383 | |
85416a4f | 384 | ieee80211_adjust_monitor_flags(sdata, 1); |
0d143fe1 | 385 | ieee80211_configure_filter(local); |
53e9b1de DG |
386 | |
387 | netif_carrier_on(dev); | |
0d143fe1 | 388 | break; |
0d143fe1 | 389 | default: |
34d4bc4d | 390 | if (coming_up) { |
4b6f1dd6 JB |
391 | ieee80211_del_virtual_monitor(local); |
392 | ||
7b7eab6f | 393 | res = drv_add_interface(local, sdata); |
34d4bc4d JB |
394 | if (res) |
395 | goto err_stop; | |
3a25a8c8 JB |
396 | res = ieee80211_check_queues(sdata); |
397 | if (res) | |
398 | goto err_del_interface; | |
34d4bc4d | 399 | } |
0d143fe1 | 400 | |
29cbe68c | 401 | if (sdata->vif.type == NL80211_IFTYPE_AP) { |
e3b90ca2 | 402 | local->fif_pspoll++; |
7be5086d | 403 | local->fif_probe_req++; |
e3b90ca2 | 404 | |
e3b90ca2 | 405 | ieee80211_configure_filter(local); |
7be5086d JB |
406 | } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) { |
407 | local->fif_probe_req++; | |
a3c9aa51 | 408 | } |
e3b90ca2 | 409 | |
0d143fe1 JB |
410 | changed |= ieee80211_reset_erp_info(sdata); |
411 | ieee80211_bss_info_change_notify(sdata, changed); | |
0d143fe1 | 412 | |
86a2ea41 | 413 | if (sdata->vif.type == NL80211_IFTYPE_STATION || |
3edaf3e6 JB |
414 | sdata->vif.type == NL80211_IFTYPE_ADHOC || |
415 | sdata->vif.type == NL80211_IFTYPE_AP) | |
0d143fe1 JB |
416 | netif_carrier_off(dev); |
417 | else | |
418 | netif_carrier_on(dev); | |
59034591 EP |
419 | |
420 | /* | |
421 | * set default queue parameters so drivers don't | |
422 | * need to initialise the hardware if the hardware | |
423 | * doesn't start up with sane defaults | |
424 | */ | |
3abead59 | 425 | ieee80211_set_wmm_default(sdata, true); |
0d143fe1 JB |
426 | } |
427 | ||
2d2080c3 JB |
428 | set_bit(SDATA_STATE_RUNNING, &sdata->state); |
429 | ||
0d143fe1 JB |
430 | if (sdata->vif.type == NL80211_IFTYPE_WDS) { |
431 | /* Create STA entry for the WDS peer */ | |
432 | sta = sta_info_alloc(sdata, sdata->u.wds.remote_addr, | |
433 | GFP_KERNEL); | |
434 | if (!sta) { | |
435 | res = -ENOMEM; | |
436 | goto err_del_interface; | |
437 | } | |
438 | ||
83d5cc01 JB |
439 | sta_info_pre_move_state(sta, IEEE80211_STA_AUTH); |
440 | sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC); | |
441 | sta_info_pre_move_state(sta, IEEE80211_STA_AUTHORIZED); | |
0d143fe1 JB |
442 | |
443 | res = sta_info_insert(sta); | |
444 | if (res) { | |
445 | /* STA has been freed */ | |
446 | goto err_del_interface; | |
447 | } | |
1be7fe8d BJ |
448 | |
449 | rate_control_rate_init(sta); | |
0d143fe1 JB |
450 | } |
451 | ||
0d143fe1 JB |
452 | /* |
453 | * set_multicast_list will be invoked by the networking core | |
454 | * which will check whether any increments here were done in | |
455 | * error and sync them down to the hardware as filter flags. | |
456 | */ | |
457 | if (sdata->flags & IEEE80211_SDATA_ALLMULTI) | |
458 | atomic_inc(&local->iff_allmultis); | |
459 | ||
460 | if (sdata->flags & IEEE80211_SDATA_PROMISC) | |
461 | atomic_inc(&local->iff_promiscs); | |
462 | ||
7da7cc1d | 463 | mutex_lock(&local->mtx); |
5cff20e6 | 464 | hw_reconf_flags |= __ieee80211_recalc_idle(local); |
7da7cc1d | 465 | mutex_unlock(&local->mtx); |
5cff20e6 | 466 | |
34d4bc4d JB |
467 | if (coming_up) |
468 | local->open_count++; | |
469 | ||
59034591 | 470 | if (hw_reconf_flags) |
e8975581 | 471 | ieee80211_hw_config(local, hw_reconf_flags); |
0d143fe1 | 472 | |
10f644a4 | 473 | ieee80211_recalc_ps(local, -1); |
965bedad | 474 | |
8a5b33f5 | 475 | netif_tx_start_all_queues(dev); |
0d143fe1 JB |
476 | |
477 | return 0; | |
478 | err_del_interface: | |
7b7eab6f | 479 | drv_remove_interface(local, sdata); |
0d143fe1 | 480 | err_stop: |
24487981 JB |
481 | if (!local->open_count) |
482 | drv_stop(local); | |
0d143fe1 JB |
483 | err_del_bss: |
484 | sdata->bss = NULL; | |
485 | if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) | |
486 | list_del(&sdata->u.vlan.list); | |
4d6c36fa | 487 | /* might already be clear but that doesn't matter */ |
2d2080c3 | 488 | clear_bit(SDATA_STATE_RUNNING, &sdata->state); |
0d143fe1 JB |
489 | return res; |
490 | } | |
491 | ||
34d4bc4d | 492 | static int ieee80211_open(struct net_device *dev) |
0d143fe1 JB |
493 | { |
494 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
34d4bc4d JB |
495 | int err; |
496 | ||
497 | /* fail early if user set an invalid address */ | |
2fcf2824 | 498 | if (!is_valid_ether_addr(dev->dev_addr)) |
34d4bc4d JB |
499 | return -EADDRNOTAVAIL; |
500 | ||
501 | err = ieee80211_check_concurrent_iface(sdata, sdata->vif.type); | |
502 | if (err) | |
503 | return err; | |
504 | ||
505 | return ieee80211_do_open(dev, true); | |
506 | } | |
507 | ||
508 | static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata, | |
509 | bool going_down) | |
510 | { | |
0d143fe1 | 511 | struct ieee80211_local *local = sdata->local; |
5061b0c2 JB |
512 | unsigned long flags; |
513 | struct sk_buff *skb, *tmp; | |
e8975581 | 514 | u32 hw_reconf_flags = 0; |
5061b0c2 | 515 | int i; |
2cf22b89 | 516 | enum nl80211_channel_type orig_ct; |
0d143fe1 | 517 | |
c29acf20 RM |
518 | clear_bit(SDATA_STATE_RUNNING, &sdata->state); |
519 | ||
352ffad6 BC |
520 | if (local->scan_sdata == sdata) |
521 | ieee80211_scan_cancel(local); | |
522 | ||
0d143fe1 JB |
523 | /* |
524 | * Stop TX on this interface first. | |
525 | */ | |
34d4bc4d | 526 | netif_tx_stop_all_queues(sdata->dev); |
0d143fe1 | 527 | |
2eb278e0 | 528 | ieee80211_roc_purge(sdata); |
af6b6374 | 529 | |
0d143fe1 JB |
530 | /* |
531 | * Remove all stations associated with this interface. | |
532 | * | |
533 | * This must be done before calling ops->remove_interface() | |
534 | * because otherwise we can later invoke ops->sta_notify() | |
535 | * whenever the STAs are removed, and that invalidates driver | |
536 | * assumptions about always getting a vif pointer that is valid | |
537 | * (because if we remove a STA after ops->remove_interface() | |
538 | * the driver will have removed the vif info already!) | |
539 | * | |
b9dcf712 JB |
540 | * This is relevant only in AP, WDS and mesh modes, since in |
541 | * all other modes we've already removed all stations when | |
542 | * disconnecting etc. | |
0d143fe1 JB |
543 | */ |
544 | sta_info_flush(local, sdata); | |
545 | ||
546 | /* | |
547 | * Don't count this interface for promisc/allmulti while it | |
548 | * is down. dev_mc_unsync() will invoke set_multicast_list | |
549 | * on the master interface which will sync these down to the | |
550 | * hardware as filter flags. | |
551 | */ | |
552 | if (sdata->flags & IEEE80211_SDATA_ALLMULTI) | |
553 | atomic_dec(&local->iff_allmultis); | |
554 | ||
555 | if (sdata->flags & IEEE80211_SDATA_PROMISC) | |
556 | atomic_dec(&local->iff_promiscs); | |
557 | ||
7be5086d | 558 | if (sdata->vif.type == NL80211_IFTYPE_AP) { |
e3b90ca2 | 559 | local->fif_pspoll--; |
7be5086d JB |
560 | local->fif_probe_req--; |
561 | } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) { | |
562 | local->fif_probe_req--; | |
563 | } | |
e3b90ca2 | 564 | |
34d4bc4d | 565 | netif_addr_lock_bh(sdata->dev); |
3b8d81e0 | 566 | spin_lock_bh(&local->filter_lock); |
34d4bc4d JB |
567 | __hw_addr_unsync(&local->mc_list, &sdata->dev->mc, |
568 | sdata->dev->addr_len); | |
3b8d81e0 | 569 | spin_unlock_bh(&local->filter_lock); |
34d4bc4d | 570 | netif_addr_unlock_bh(sdata->dev); |
3b8d81e0 | 571 | |
3ac64bee JB |
572 | ieee80211_configure_filter(local); |
573 | ||
7cbf0ba5 VN |
574 | del_timer_sync(&local->dynamic_ps_timer); |
575 | cancel_work_sync(&local->dynamic_ps_enable_work); | |
0d143fe1 JB |
576 | |
577 | /* APs need special treatment */ | |
578 | if (sdata->vif.type == NL80211_IFTYPE_AP) { | |
57c9fff3 | 579 | struct ieee80211_sub_if_data *vlan, *tmpsdata; |
40b275b6 JB |
580 | struct beacon_data *old_beacon = |
581 | rtnl_dereference(sdata->u.ap.beacon); | |
02945821 AN |
582 | struct sk_buff *old_probe_resp = |
583 | rtnl_dereference(sdata->u.ap.probe_resp); | |
0d143fe1 | 584 | |
b9dcf712 JB |
585 | /* sdata_running will return false, so this will disable */ |
586 | ieee80211_bss_info_change_notify(sdata, | |
587 | BSS_CHANGED_BEACON_ENABLED); | |
588 | ||
02945821 | 589 | /* remove beacon and probe response */ |
a9b3cd7f | 590 | RCU_INIT_POINTER(sdata->u.ap.beacon, NULL); |
02945821 | 591 | RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL); |
0d143fe1 JB |
592 | synchronize_rcu(); |
593 | kfree(old_beacon); | |
5e2e05de | 594 | kfree_skb(old_probe_resp); |
0d143fe1 JB |
595 | |
596 | /* down all dependent devices, that is VLANs */ | |
57c9fff3 | 597 | list_for_each_entry_safe(vlan, tmpsdata, &sdata->u.ap.vlans, |
0d143fe1 JB |
598 | u.vlan.list) |
599 | dev_close(vlan->dev); | |
600 | WARN_ON(!list_empty(&sdata->u.ap.vlans)); | |
6f2d9335 JB |
601 | |
602 | /* free all potentially still buffered bcast frames */ | |
603 | local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps_bc_buf); | |
604 | skb_queue_purge(&sdata->u.ap.ps_bc_buf); | |
afa762f6 EP |
605 | } else if (sdata->vif.type == NL80211_IFTYPE_STATION) { |
606 | ieee80211_mgd_stop(sdata); | |
0d143fe1 JB |
607 | } |
608 | ||
34d4bc4d JB |
609 | if (going_down) |
610 | local->open_count--; | |
0d143fe1 JB |
611 | |
612 | switch (sdata->vif.type) { | |
613 | case NL80211_IFTYPE_AP_VLAN: | |
614 | list_del(&sdata->u.vlan.list); | |
615 | /* no need to tell driver */ | |
616 | break; | |
617 | case NL80211_IFTYPE_MONITOR: | |
618 | if (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES) { | |
619 | local->cooked_mntrs--; | |
620 | break; | |
621 | } | |
622 | ||
623 | local->monitors--; | |
e8975581 | 624 | if (local->monitors == 0) { |
0869aea0 JB |
625 | local->hw.conf.flags &= ~IEEE80211_CONF_MONITOR; |
626 | hw_reconf_flags |= IEEE80211_CONF_CHANGE_MONITOR; | |
4b6f1dd6 | 627 | ieee80211_del_virtual_monitor(local); |
e8975581 | 628 | } |
0d143fe1 | 629 | |
85416a4f | 630 | ieee80211_adjust_monitor_flags(sdata, -1); |
0d143fe1 | 631 | ieee80211_configure_filter(local); |
0d143fe1 | 632 | break; |
0d143fe1 | 633 | default: |
c1475ca9 | 634 | flush_work(&sdata->work); |
35f20c14 JB |
635 | /* |
636 | * When we get here, the interface is marked down. | |
637 | * Call synchronize_rcu() to wait for the RX path | |
638 | * should it be using the interface and enqueuing | |
639 | * frames at this very time on another CPU. | |
640 | */ | |
641 | synchronize_rcu(); | |
642 | skb_queue_purge(&sdata->skb_queue); | |
643 | ||
97af7432 | 644 | /* |
b9dcf712 JB |
645 | * Disable beaconing here for mesh only, AP and IBSS |
646 | * are already taken care of. | |
97af7432 | 647 | */ |
b9dcf712 | 648 | if (sdata->vif.type == NL80211_IFTYPE_MESH_POINT) |
97af7432 BC |
649 | ieee80211_bss_info_change_notify(sdata, |
650 | BSS_CHANGED_BEACON_ENABLED); | |
97af7432 | 651 | |
b9dcf712 JB |
652 | /* |
653 | * Free all remaining keys, there shouldn't be any, | |
654 | * except maybe group keys in AP more or WDS? | |
655 | */ | |
ad0e2b5a | 656 | ieee80211_free_keys(sdata); |
b9dcf712 | 657 | |
34d4bc4d | 658 | if (going_down) |
7b7eab6f | 659 | drv_remove_interface(local, sdata); |
0d143fe1 JB |
660 | } |
661 | ||
662 | sdata->bss = NULL; | |
663 | ||
7da7cc1d | 664 | mutex_lock(&local->mtx); |
5cff20e6 | 665 | hw_reconf_flags |= __ieee80211_recalc_idle(local); |
7da7cc1d | 666 | mutex_unlock(&local->mtx); |
5cff20e6 JB |
667 | |
668 | ieee80211_recalc_ps(local, -1); | |
669 | ||
0d143fe1 | 670 | if (local->open_count == 0) { |
4e6cbfd0 JL |
671 | if (local->ops->napi_poll) |
672 | napi_disable(&local->napi); | |
ea77f12f | 673 | ieee80211_clear_tx_pending(local); |
84f6a01c | 674 | ieee80211_stop_device(local); |
0d143fe1 | 675 | |
e8975581 JB |
676 | /* no reconfiguring after stop! */ |
677 | hw_reconf_flags = 0; | |
0d143fe1 JB |
678 | } |
679 | ||
2cf22b89 BG |
680 | /* Re-calculate channel-type, in case there are multiple vifs |
681 | * on different channel types. | |
682 | */ | |
683 | orig_ct = local->_oper_channel_type; | |
684 | ieee80211_set_channel_type(local, NULL, NL80211_CHAN_NO_HT); | |
685 | ||
e8975581 | 686 | /* do after stop to avoid reconfiguring when we stop anyway */ |
2cf22b89 | 687 | if (hw_reconf_flags || (orig_ct != local->_oper_channel_type)) |
e8975581 JB |
688 | ieee80211_hw_config(local, hw_reconf_flags); |
689 | ||
5061b0c2 JB |
690 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
691 | for (i = 0; i < IEEE80211_MAX_QUEUES; i++) { | |
692 | skb_queue_walk_safe(&local->pending[i], skb, tmp) { | |
693 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); | |
694 | if (info->control.vif == &sdata->vif) { | |
695 | __skb_unlink(skb, &local->pending[i]); | |
696 | dev_kfree_skb_irq(skb); | |
697 | } | |
698 | } | |
699 | } | |
700 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
4b6f1dd6 JB |
701 | |
702 | if (local->monitors == local->open_count && local->monitors > 0) | |
703 | ieee80211_add_virtual_monitor(local); | |
34d4bc4d JB |
704 | } |
705 | ||
706 | static int ieee80211_stop(struct net_device *dev) | |
707 | { | |
708 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
709 | ||
710 | ieee80211_do_stop(sdata, true); | |
5061b0c2 | 711 | |
0d143fe1 JB |
712 | return 0; |
713 | } | |
714 | ||
715 | static void ieee80211_set_multicast_list(struct net_device *dev) | |
716 | { | |
0d143fe1 | 717 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
b4a4bf5d | 718 | struct ieee80211_local *local = sdata->local; |
0d143fe1 JB |
719 | int allmulti, promisc, sdata_allmulti, sdata_promisc; |
720 | ||
721 | allmulti = !!(dev->flags & IFF_ALLMULTI); | |
722 | promisc = !!(dev->flags & IFF_PROMISC); | |
723 | sdata_allmulti = !!(sdata->flags & IEEE80211_SDATA_ALLMULTI); | |
724 | sdata_promisc = !!(sdata->flags & IEEE80211_SDATA_PROMISC); | |
725 | ||
726 | if (allmulti != sdata_allmulti) { | |
727 | if (dev->flags & IFF_ALLMULTI) | |
728 | atomic_inc(&local->iff_allmultis); | |
729 | else | |
730 | atomic_dec(&local->iff_allmultis); | |
731 | sdata->flags ^= IEEE80211_SDATA_ALLMULTI; | |
732 | } | |
733 | ||
734 | if (promisc != sdata_promisc) { | |
735 | if (dev->flags & IFF_PROMISC) | |
736 | atomic_inc(&local->iff_promiscs); | |
737 | else | |
738 | atomic_dec(&local->iff_promiscs); | |
739 | sdata->flags ^= IEEE80211_SDATA_PROMISC; | |
740 | } | |
3b8d81e0 | 741 | spin_lock_bh(&local->filter_lock); |
22bedad3 | 742 | __hw_addr_sync(&local->mc_list, &dev->mc, dev->addr_len); |
3b8d81e0 | 743 | spin_unlock_bh(&local->filter_lock); |
3ac64bee | 744 | ieee80211_queue_work(&local->hw, &local->reconfig_filter); |
0d143fe1 JB |
745 | } |
746 | ||
75636525 JB |
747 | /* |
748 | * Called when the netdev is removed or, by the code below, before | |
749 | * the interface type changes. | |
750 | */ | |
751 | static void ieee80211_teardown_sdata(struct net_device *dev) | |
f0706e82 | 752 | { |
75636525 JB |
753 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
754 | struct ieee80211_local *local = sdata->local; | |
75636525 | 755 | int flushed; |
f0706e82 JB |
756 | int i; |
757 | ||
75636525 JB |
758 | /* free extra data */ |
759 | ieee80211_free_keys(sdata); | |
760 | ||
aee14ceb JM |
761 | ieee80211_debugfs_remove_netdev(sdata); |
762 | ||
f0706e82 | 763 | for (i = 0; i < IEEE80211_FRAGMENT_MAX; i++) |
75636525 JB |
764 | __skb_queue_purge(&sdata->fragments[i].skb_list); |
765 | sdata->fragment_next = 0; | |
11a843b7 | 766 | |
b9dcf712 JB |
767 | if (ieee80211_vif_is_mesh(&sdata->vif)) |
768 | mesh_rmc_free(sdata); | |
75636525 JB |
769 | |
770 | flushed = sta_info_flush(local, sdata); | |
771 | WARN_ON(flushed); | |
f0706e82 JB |
772 | } |
773 | ||
cf0277e7 JB |
774 | static u16 ieee80211_netdev_select_queue(struct net_device *dev, |
775 | struct sk_buff *skb) | |
776 | { | |
777 | return ieee80211_select_queue(IEEE80211_DEV_TO_SUB_IF(dev), skb); | |
778 | } | |
779 | ||
587e729e JB |
780 | static const struct net_device_ops ieee80211_dataif_ops = { |
781 | .ndo_open = ieee80211_open, | |
782 | .ndo_stop = ieee80211_stop, | |
783 | .ndo_uninit = ieee80211_teardown_sdata, | |
784 | .ndo_start_xmit = ieee80211_subif_start_xmit, | |
afc4b13d | 785 | .ndo_set_rx_mode = ieee80211_set_multicast_list, |
587e729e | 786 | .ndo_change_mtu = ieee80211_change_mtu, |
47846c9b | 787 | .ndo_set_mac_address = ieee80211_change_mac, |
cf0277e7 | 788 | .ndo_select_queue = ieee80211_netdev_select_queue, |
587e729e JB |
789 | }; |
790 | ||
cf0277e7 JB |
791 | static u16 ieee80211_monitor_select_queue(struct net_device *dev, |
792 | struct sk_buff *skb) | |
793 | { | |
794 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
795 | struct ieee80211_local *local = sdata->local; | |
796 | struct ieee80211_hdr *hdr; | |
797 | struct ieee80211_radiotap_header *rtap = (void *)skb->data; | |
798 | ||
32c5057b | 799 | if (local->hw.queues < IEEE80211_NUM_ACS) |
cf0277e7 JB |
800 | return 0; |
801 | ||
802 | if (skb->len < 4 || | |
b49bb574 | 803 | skb->len < le16_to_cpu(rtap->it_len) + 2 /* frame control */) |
cf0277e7 JB |
804 | return 0; /* doesn't matter, frame will be dropped */ |
805 | ||
b49bb574 | 806 | hdr = (void *)((u8 *)skb->data + le16_to_cpu(rtap->it_len)); |
cf0277e7 | 807 | |
00e96dec | 808 | return ieee80211_select_queue_80211(sdata, skb, hdr); |
cf0277e7 JB |
809 | } |
810 | ||
587e729e JB |
811 | static const struct net_device_ops ieee80211_monitorif_ops = { |
812 | .ndo_open = ieee80211_open, | |
813 | .ndo_stop = ieee80211_stop, | |
814 | .ndo_uninit = ieee80211_teardown_sdata, | |
815 | .ndo_start_xmit = ieee80211_monitor_start_xmit, | |
afc4b13d | 816 | .ndo_set_rx_mode = ieee80211_set_multicast_list, |
587e729e JB |
817 | .ndo_change_mtu = ieee80211_change_mtu, |
818 | .ndo_set_mac_address = eth_mac_addr, | |
cf0277e7 | 819 | .ndo_select_queue = ieee80211_monitor_select_queue, |
587e729e JB |
820 | }; |
821 | ||
822 | static void ieee80211_if_setup(struct net_device *dev) | |
823 | { | |
824 | ether_setup(dev); | |
550fd08c | 825 | dev->priv_flags &= ~IFF_TX_SKB_SHARING; |
587e729e | 826 | dev->netdev_ops = &ieee80211_dataif_ops; |
587e729e JB |
827 | dev->destructor = free_netdev; |
828 | } | |
829 | ||
1fa57d01 JB |
830 | static void ieee80211_iface_work(struct work_struct *work) |
831 | { | |
832 | struct ieee80211_sub_if_data *sdata = | |
833 | container_of(work, struct ieee80211_sub_if_data, work); | |
834 | struct ieee80211_local *local = sdata->local; | |
835 | struct sk_buff *skb; | |
344eec67 | 836 | struct sta_info *sta; |
c1475ca9 | 837 | struct ieee80211_ra_tid *ra_tid; |
1fa57d01 JB |
838 | |
839 | if (!ieee80211_sdata_running(sdata)) | |
840 | return; | |
841 | ||
842 | if (local->scanning) | |
843 | return; | |
844 | ||
845 | /* | |
846 | * ieee80211_queue_work() should have picked up most cases, | |
847 | * here we'll pick the rest. | |
848 | */ | |
849 | if (WARN(local->suspended, | |
850 | "interface work scheduled while going to suspend\n")) | |
851 | return; | |
852 | ||
853 | /* first process frames */ | |
854 | while ((skb = skb_dequeue(&sdata->skb_queue))) { | |
bed7ee6e JB |
855 | struct ieee80211_mgmt *mgmt = (void *)skb->data; |
856 | ||
c1475ca9 JB |
857 | if (skb->pkt_type == IEEE80211_SDATA_QUEUE_AGG_START) { |
858 | ra_tid = (void *)&skb->cb; | |
859 | ieee80211_start_tx_ba_cb(&sdata->vif, ra_tid->ra, | |
860 | ra_tid->tid); | |
861 | } else if (skb->pkt_type == IEEE80211_SDATA_QUEUE_AGG_STOP) { | |
862 | ra_tid = (void *)&skb->cb; | |
863 | ieee80211_stop_tx_ba_cb(&sdata->vif, ra_tid->ra, | |
864 | ra_tid->tid); | |
865 | } else if (ieee80211_is_action(mgmt->frame_control) && | |
866 | mgmt->u.action.category == WLAN_CATEGORY_BACK) { | |
bed7ee6e | 867 | int len = skb->len; |
bed7ee6e | 868 | |
a93e3644 | 869 | mutex_lock(&local->sta_mtx); |
875ae5f6 | 870 | sta = sta_info_get_bss(sdata, mgmt->sa); |
bed7ee6e JB |
871 | if (sta) { |
872 | switch (mgmt->u.action.u.addba_req.action_code) { | |
873 | case WLAN_ACTION_ADDBA_REQ: | |
874 | ieee80211_process_addba_request( | |
875 | local, sta, mgmt, len); | |
876 | break; | |
877 | case WLAN_ACTION_ADDBA_RESP: | |
878 | ieee80211_process_addba_resp(local, sta, | |
879 | mgmt, len); | |
880 | break; | |
881 | case WLAN_ACTION_DELBA: | |
882 | ieee80211_process_delba(sdata, sta, | |
883 | mgmt, len); | |
884 | break; | |
885 | default: | |
886 | WARN_ON(1); | |
887 | break; | |
888 | } | |
889 | } | |
a93e3644 | 890 | mutex_unlock(&local->sta_mtx); |
344eec67 JB |
891 | } else if (ieee80211_is_data_qos(mgmt->frame_control)) { |
892 | struct ieee80211_hdr *hdr = (void *)mgmt; | |
893 | /* | |
894 | * So the frame isn't mgmt, but frame_control | |
895 | * is at the right place anyway, of course, so | |
896 | * the if statement is correct. | |
897 | * | |
898 | * Warn if we have other data frame types here, | |
899 | * they must not get here. | |
900 | */ | |
901 | WARN_ON(hdr->frame_control & | |
902 | cpu_to_le16(IEEE80211_STYPE_NULLFUNC)); | |
903 | WARN_ON(!(hdr->seq_ctrl & | |
904 | cpu_to_le16(IEEE80211_SCTL_FRAG))); | |
905 | /* | |
906 | * This was a fragment of a frame, received while | |
907 | * a block-ack session was active. That cannot be | |
908 | * right, so terminate the session. | |
909 | */ | |
a93e3644 | 910 | mutex_lock(&local->sta_mtx); |
875ae5f6 | 911 | sta = sta_info_get_bss(sdata, mgmt->sa); |
344eec67 JB |
912 | if (sta) { |
913 | u16 tid = *ieee80211_get_qos_ctl(hdr) & | |
914 | IEEE80211_QOS_CTL_TID_MASK; | |
915 | ||
916 | __ieee80211_stop_rx_ba_session( | |
917 | sta, tid, WLAN_BACK_RECIPIENT, | |
53f73c09 JB |
918 | WLAN_REASON_QSTA_REQUIRE_SETUP, |
919 | true); | |
344eec67 | 920 | } |
a93e3644 | 921 | mutex_unlock(&local->sta_mtx); |
bed7ee6e | 922 | } else switch (sdata->vif.type) { |
1fa57d01 JB |
923 | case NL80211_IFTYPE_STATION: |
924 | ieee80211_sta_rx_queued_mgmt(sdata, skb); | |
925 | break; | |
926 | case NL80211_IFTYPE_ADHOC: | |
927 | ieee80211_ibss_rx_queued_mgmt(sdata, skb); | |
928 | break; | |
929 | case NL80211_IFTYPE_MESH_POINT: | |
930 | if (!ieee80211_vif_is_mesh(&sdata->vif)) | |
931 | break; | |
932 | ieee80211_mesh_rx_queued_mgmt(sdata, skb); | |
933 | break; | |
934 | default: | |
935 | WARN(1, "frame for unexpected interface type"); | |
1fa57d01 JB |
936 | break; |
937 | } | |
36b3a628 JB |
938 | |
939 | kfree_skb(skb); | |
1fa57d01 JB |
940 | } |
941 | ||
942 | /* then other type-dependent work */ | |
943 | switch (sdata->vif.type) { | |
944 | case NL80211_IFTYPE_STATION: | |
945 | ieee80211_sta_work(sdata); | |
946 | break; | |
947 | case NL80211_IFTYPE_ADHOC: | |
948 | ieee80211_ibss_work(sdata); | |
949 | break; | |
950 | case NL80211_IFTYPE_MESH_POINT: | |
951 | if (!ieee80211_vif_is_mesh(&sdata->vif)) | |
952 | break; | |
953 | ieee80211_mesh_work(sdata); | |
954 | break; | |
955 | default: | |
956 | break; | |
957 | } | |
958 | } | |
959 | ||
960 | ||
75636525 JB |
961 | /* |
962 | * Helper function to initialise an interface to a specific type. | |
963 | */ | |
964 | static void ieee80211_setup_sdata(struct ieee80211_sub_if_data *sdata, | |
05c914fe | 965 | enum nl80211_iftype type) |
f0706e82 | 966 | { |
75636525 JB |
967 | /* clear type-dependent union */ |
968 | memset(&sdata->u, 0, sizeof(sdata->u)); | |
969 | ||
970 | /* and set some type-dependent values */ | |
971 | sdata->vif.type = type; | |
2ca27bcf | 972 | sdata->vif.p2p = false; |
587e729e | 973 | sdata->dev->netdev_ops = &ieee80211_dataif_ops; |
60719ffd | 974 | sdata->wdev.iftype = type; |
75636525 | 975 | |
a621fa4d JB |
976 | sdata->control_port_protocol = cpu_to_be16(ETH_P_PAE); |
977 | sdata->control_port_no_encrypt = false; | |
978 | ||
b53be792 SW |
979 | sdata->noack_map = 0; |
980 | ||
75636525 JB |
981 | /* only monitor differs */ |
982 | sdata->dev->type = ARPHRD_ETHER; | |
983 | ||
35f20c14 | 984 | skb_queue_head_init(&sdata->skb_queue); |
1fa57d01 | 985 | INIT_WORK(&sdata->work, ieee80211_iface_work); |
35f20c14 | 986 | |
75636525 | 987 | switch (type) { |
2ca27bcf JB |
988 | case NL80211_IFTYPE_P2P_GO: |
989 | type = NL80211_IFTYPE_AP; | |
990 | sdata->vif.type = type; | |
991 | sdata->vif.p2p = true; | |
992 | /* fall through */ | |
05c914fe | 993 | case NL80211_IFTYPE_AP: |
75636525 JB |
994 | skb_queue_head_init(&sdata->u.ap.ps_bc_buf); |
995 | INIT_LIST_HEAD(&sdata->u.ap.vlans); | |
996 | break; | |
2ca27bcf JB |
997 | case NL80211_IFTYPE_P2P_CLIENT: |
998 | type = NL80211_IFTYPE_STATION; | |
999 | sdata->vif.type = type; | |
1000 | sdata->vif.p2p = true; | |
1001 | /* fall through */ | |
05c914fe | 1002 | case NL80211_IFTYPE_STATION: |
9c6bd790 | 1003 | ieee80211_sta_setup_sdata(sdata); |
472dbc45 | 1004 | break; |
46900298 JB |
1005 | case NL80211_IFTYPE_ADHOC: |
1006 | ieee80211_ibss_setup_sdata(sdata); | |
1007 | break; | |
05c914fe | 1008 | case NL80211_IFTYPE_MESH_POINT: |
75636525 JB |
1009 | if (ieee80211_vif_is_mesh(&sdata->vif)) |
1010 | ieee80211_mesh_init_sdata(sdata); | |
1011 | break; | |
05c914fe | 1012 | case NL80211_IFTYPE_MONITOR: |
75636525 | 1013 | sdata->dev->type = ARPHRD_IEEE80211_RADIOTAP; |
587e729e | 1014 | sdata->dev->netdev_ops = &ieee80211_monitorif_ops; |
75636525 JB |
1015 | sdata->u.mntr_flags = MONITOR_FLAG_CONTROL | |
1016 | MONITOR_FLAG_OTHER_BSS; | |
1017 | break; | |
05c914fe JB |
1018 | case NL80211_IFTYPE_WDS: |
1019 | case NL80211_IFTYPE_AP_VLAN: | |
75636525 | 1020 | break; |
05c914fe | 1021 | case NL80211_IFTYPE_UNSPECIFIED: |
2e161f78 | 1022 | case NUM_NL80211_IFTYPES: |
75636525 JB |
1023 | BUG(); |
1024 | break; | |
1025 | } | |
1026 | ||
1027 | ieee80211_debugfs_add_netdev(sdata); | |
1028 | } | |
1029 | ||
94c514fe AE |
1030 | static void ieee80211_clean_sdata(struct ieee80211_sub_if_data *sdata) |
1031 | { | |
1032 | switch (sdata->vif.type) { | |
1033 | case NL80211_IFTYPE_MESH_POINT: | |
1034 | mesh_path_flush_by_iface(sdata); | |
1035 | break; | |
1036 | ||
1037 | default: | |
1038 | break; | |
1039 | } | |
1040 | } | |
1041 | ||
34d4bc4d JB |
1042 | static int ieee80211_runtime_change_iftype(struct ieee80211_sub_if_data *sdata, |
1043 | enum nl80211_iftype type) | |
1044 | { | |
1045 | struct ieee80211_local *local = sdata->local; | |
1046 | int ret, err; | |
2ca27bcf JB |
1047 | enum nl80211_iftype internal_type = type; |
1048 | bool p2p = false; | |
34d4bc4d JB |
1049 | |
1050 | ASSERT_RTNL(); | |
1051 | ||
1052 | if (!local->ops->change_interface) | |
1053 | return -EBUSY; | |
1054 | ||
1055 | switch (sdata->vif.type) { | |
1056 | case NL80211_IFTYPE_AP: | |
1057 | case NL80211_IFTYPE_STATION: | |
1058 | case NL80211_IFTYPE_ADHOC: | |
1059 | /* | |
1060 | * Could maybe also all others here? | |
1061 | * Just not sure how that interacts | |
1062 | * with the RX/config path e.g. for | |
1063 | * mesh. | |
1064 | */ | |
1065 | break; | |
1066 | default: | |
1067 | return -EBUSY; | |
1068 | } | |
1069 | ||
1070 | switch (type) { | |
1071 | case NL80211_IFTYPE_AP: | |
1072 | case NL80211_IFTYPE_STATION: | |
1073 | case NL80211_IFTYPE_ADHOC: | |
1074 | /* | |
1075 | * Could probably support everything | |
1076 | * but WDS here (WDS do_open can fail | |
1077 | * under memory pressure, which this | |
1078 | * code isn't prepared to handle). | |
1079 | */ | |
1080 | break; | |
2ca27bcf JB |
1081 | case NL80211_IFTYPE_P2P_CLIENT: |
1082 | p2p = true; | |
1083 | internal_type = NL80211_IFTYPE_STATION; | |
1084 | break; | |
1085 | case NL80211_IFTYPE_P2P_GO: | |
1086 | p2p = true; | |
1087 | internal_type = NL80211_IFTYPE_AP; | |
1088 | break; | |
34d4bc4d JB |
1089 | default: |
1090 | return -EBUSY; | |
1091 | } | |
1092 | ||
2ca27bcf | 1093 | ret = ieee80211_check_concurrent_iface(sdata, internal_type); |
34d4bc4d JB |
1094 | if (ret) |
1095 | return ret; | |
1096 | ||
1097 | ieee80211_do_stop(sdata, false); | |
1098 | ||
1099 | ieee80211_teardown_sdata(sdata->dev); | |
1100 | ||
2ca27bcf | 1101 | ret = drv_change_interface(local, sdata, internal_type, p2p); |
34d4bc4d JB |
1102 | if (ret) |
1103 | type = sdata->vif.type; | |
1104 | ||
3a25a8c8 JB |
1105 | /* |
1106 | * Ignore return value here, there's not much we can do since | |
1107 | * the driver changed the interface type internally already. | |
1108 | * The warnings will hopefully make driver authors fix it :-) | |
1109 | */ | |
1110 | ieee80211_check_queues(sdata); | |
1111 | ||
34d4bc4d JB |
1112 | ieee80211_setup_sdata(sdata, type); |
1113 | ||
1114 | err = ieee80211_do_open(sdata->dev, false); | |
1115 | WARN(err, "type change: do_open returned %d", err); | |
1116 | ||
1117 | return ret; | |
1118 | } | |
1119 | ||
f3947e2d | 1120 | int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, |
05c914fe | 1121 | enum nl80211_iftype type) |
75636525 | 1122 | { |
34d4bc4d JB |
1123 | int ret; |
1124 | ||
f3947e2d JB |
1125 | ASSERT_RTNL(); |
1126 | ||
2ca27bcf | 1127 | if (type == ieee80211_vif_type_p2p(&sdata->vif)) |
f3947e2d JB |
1128 | return 0; |
1129 | ||
e60c7744 | 1130 | /* Setting ad-hoc mode on non-IBSS channel is not supported. */ |
dcebf45c PR |
1131 | if (sdata->local->oper_channel->flags & IEEE80211_CHAN_NO_IBSS && |
1132 | type == NL80211_IFTYPE_ADHOC) | |
e60c7744 JB |
1133 | return -EOPNOTSUPP; |
1134 | ||
34d4bc4d JB |
1135 | if (ieee80211_sdata_running(sdata)) { |
1136 | ret = ieee80211_runtime_change_iftype(sdata, type); | |
1137 | if (ret) | |
1138 | return ret; | |
1139 | } else { | |
1140 | /* Purge and reset type-dependent state. */ | |
1141 | ieee80211_teardown_sdata(sdata->dev); | |
1142 | ieee80211_setup_sdata(sdata, type); | |
1143 | } | |
75636525 JB |
1144 | |
1145 | /* reset some values that shouldn't be kept across type changes */ | |
bda3933a | 1146 | sdata->vif.bss_conf.basic_rates = |
96dd22ac JB |
1147 | ieee80211_mandatory_rates(sdata->local, |
1148 | sdata->local->hw.conf.channel->band); | |
75636525 | 1149 | sdata->drop_unencrypted = 0; |
9bc383de JB |
1150 | if (type == NL80211_IFTYPE_STATION) |
1151 | sdata->u.mgd.use_4addr = false; | |
f3947e2d JB |
1152 | |
1153 | return 0; | |
f0706e82 JB |
1154 | } |
1155 | ||
fa9029f8 JB |
1156 | static void ieee80211_assign_perm_addr(struct ieee80211_local *local, |
1157 | struct net_device *dev, | |
1158 | enum nl80211_iftype type) | |
1159 | { | |
1160 | struct ieee80211_sub_if_data *sdata; | |
1161 | u64 mask, start, addr, val, inc; | |
1162 | u8 *m; | |
1163 | u8 tmp_addr[ETH_ALEN]; | |
1164 | int i; | |
1165 | ||
1166 | /* default ... something at least */ | |
1167 | memcpy(dev->perm_addr, local->hw.wiphy->perm_addr, ETH_ALEN); | |
1168 | ||
1169 | if (is_zero_ether_addr(local->hw.wiphy->addr_mask) && | |
1170 | local->hw.wiphy->n_addresses <= 1) | |
1171 | return; | |
1172 | ||
1173 | ||
1174 | mutex_lock(&local->iflist_mtx); | |
1175 | ||
1176 | switch (type) { | |
1177 | case NL80211_IFTYPE_MONITOR: | |
1178 | /* doesn't matter */ | |
1179 | break; | |
1180 | case NL80211_IFTYPE_WDS: | |
1181 | case NL80211_IFTYPE_AP_VLAN: | |
1182 | /* match up with an AP interface */ | |
1183 | list_for_each_entry(sdata, &local->interfaces, list) { | |
1184 | if (sdata->vif.type != NL80211_IFTYPE_AP) | |
1185 | continue; | |
1186 | memcpy(dev->perm_addr, sdata->vif.addr, ETH_ALEN); | |
1187 | break; | |
1188 | } | |
1189 | /* keep default if no AP interface present */ | |
1190 | break; | |
1191 | default: | |
1192 | /* assign a new address if possible -- try n_addresses first */ | |
1193 | for (i = 0; i < local->hw.wiphy->n_addresses; i++) { | |
1194 | bool used = false; | |
1195 | ||
1196 | list_for_each_entry(sdata, &local->interfaces, list) { | |
1197 | if (memcmp(local->hw.wiphy->addresses[i].addr, | |
1198 | sdata->vif.addr, ETH_ALEN) == 0) { | |
1199 | used = true; | |
1200 | break; | |
1201 | } | |
1202 | } | |
1203 | ||
1204 | if (!used) { | |
1205 | memcpy(dev->perm_addr, | |
1206 | local->hw.wiphy->addresses[i].addr, | |
1207 | ETH_ALEN); | |
1208 | break; | |
1209 | } | |
1210 | } | |
1211 | ||
1212 | /* try mask if available */ | |
1213 | if (is_zero_ether_addr(local->hw.wiphy->addr_mask)) | |
1214 | break; | |
1215 | ||
1216 | m = local->hw.wiphy->addr_mask; | |
1217 | mask = ((u64)m[0] << 5*8) | ((u64)m[1] << 4*8) | | |
1218 | ((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) | | |
1219 | ((u64)m[4] << 1*8) | ((u64)m[5] << 0*8); | |
1220 | ||
1221 | if (__ffs64(mask) + hweight64(mask) != fls64(mask)) { | |
1222 | /* not a contiguous mask ... not handled now! */ | |
bdcbd8e0 | 1223 | pr_info("not contiguous\n"); |
fa9029f8 JB |
1224 | break; |
1225 | } | |
1226 | ||
1227 | m = local->hw.wiphy->perm_addr; | |
1228 | start = ((u64)m[0] << 5*8) | ((u64)m[1] << 4*8) | | |
1229 | ((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) | | |
1230 | ((u64)m[4] << 1*8) | ((u64)m[5] << 0*8); | |
1231 | ||
1232 | inc = 1ULL<<__ffs64(mask); | |
1233 | val = (start & mask); | |
1234 | addr = (start & ~mask) | (val & mask); | |
1235 | do { | |
1236 | bool used = false; | |
1237 | ||
1238 | tmp_addr[5] = addr >> 0*8; | |
1239 | tmp_addr[4] = addr >> 1*8; | |
1240 | tmp_addr[3] = addr >> 2*8; | |
1241 | tmp_addr[2] = addr >> 3*8; | |
1242 | tmp_addr[1] = addr >> 4*8; | |
1243 | tmp_addr[0] = addr >> 5*8; | |
1244 | ||
1245 | val += inc; | |
1246 | ||
1247 | list_for_each_entry(sdata, &local->interfaces, list) { | |
1248 | if (memcmp(tmp_addr, sdata->vif.addr, | |
1249 | ETH_ALEN) == 0) { | |
1250 | used = true; | |
1251 | break; | |
1252 | } | |
1253 | } | |
1254 | ||
1255 | if (!used) { | |
1256 | memcpy(dev->perm_addr, tmp_addr, ETH_ALEN); | |
1257 | break; | |
1258 | } | |
1259 | addr = (start & ~mask) | (val & mask); | |
1260 | } while (addr != start); | |
1261 | ||
1262 | break; | |
1263 | } | |
1264 | ||
1265 | mutex_unlock(&local->iflist_mtx); | |
1266 | } | |
1267 | ||
3e122be0 | 1268 | int ieee80211_if_add(struct ieee80211_local *local, const char *name, |
05c914fe | 1269 | struct net_device **new_dev, enum nl80211_iftype type, |
ee385855 | 1270 | struct vif_params *params) |
f0706e82 JB |
1271 | { |
1272 | struct net_device *ndev; | |
f0706e82 | 1273 | struct ieee80211_sub_if_data *sdata = NULL; |
75636525 | 1274 | int ret, i; |
ded81f6b | 1275 | int txqs = 1; |
f0706e82 JB |
1276 | |
1277 | ASSERT_RTNL(); | |
75636525 | 1278 | |
ded81f6b JB |
1279 | if (local->hw.queues >= IEEE80211_NUM_ACS) |
1280 | txqs = IEEE80211_NUM_ACS; | |
1281 | ||
55d99059 | 1282 | ndev = alloc_netdev_mqs(sizeof(*sdata) + local->hw.vif_data_size, |
ded81f6b | 1283 | name, ieee80211_if_setup, txqs, 1); |
f0706e82 JB |
1284 | if (!ndev) |
1285 | return -ENOMEM; | |
a272a720 | 1286 | dev_net_set(ndev, wiphy_net(local->hw.wiphy)); |
f0706e82 | 1287 | |
f3994ece JB |
1288 | ndev->needed_headroom = local->tx_headroom + |
1289 | 4*6 /* four MAC addresses */ | |
1290 | + 2 + 2 + 2 + 2 /* ctl, dur, seq, qos */ | |
1291 | + 6 /* mesh */ | |
1292 | + 8 /* rfc1042/bridge tunnel */ | |
1293 | - ETH_HLEN /* ethernet hard_header_len */ | |
1294 | + IEEE80211_ENCRYPT_HEADROOM; | |
1295 | ndev->needed_tailroom = IEEE80211_ENCRYPT_TAILROOM; | |
1296 | ||
59e7e707 TLSC |
1297 | ret = dev_alloc_name(ndev, ndev->name); |
1298 | if (ret < 0) | |
1299 | goto fail; | |
1300 | ||
fa9029f8 JB |
1301 | ieee80211_assign_perm_addr(local, ndev, type); |
1302 | memcpy(ndev->dev_addr, ndev->perm_addr, ETH_ALEN); | |
f0706e82 JB |
1303 | SET_NETDEV_DEV(ndev, wiphy_dev(local->hw.wiphy)); |
1304 | ||
3e122be0 JB |
1305 | /* don't use IEEE80211_DEV_TO_SUB_IF because it checks too much */ |
1306 | sdata = netdev_priv(ndev); | |
f0706e82 | 1307 | ndev->ieee80211_ptr = &sdata->wdev; |
47846c9b JB |
1308 | memcpy(sdata->vif.addr, ndev->dev_addr, ETH_ALEN); |
1309 | memcpy(sdata->name, ndev->name, IFNAMSIZ); | |
75636525 JB |
1310 | |
1311 | /* initialise type-independent data */ | |
f0706e82 | 1312 | sdata->wdev.wiphy = local->hw.wiphy; |
f0706e82 | 1313 | sdata->local = local; |
75636525 | 1314 | sdata->dev = ndev; |
68542962 JO |
1315 | #ifdef CONFIG_INET |
1316 | sdata->arp_filter_state = true; | |
1317 | #endif | |
75636525 JB |
1318 | |
1319 | for (i = 0; i < IEEE80211_FRAGMENT_MAX; i++) | |
1320 | skb_queue_head_init(&sdata->fragments[i].skb_list); | |
1321 | ||
1322 | INIT_LIST_HEAD(&sdata->key_list); | |
1323 | ||
37eb0b16 JM |
1324 | for (i = 0; i < IEEE80211_NUM_BANDS; i++) { |
1325 | struct ieee80211_supported_band *sband; | |
1326 | sband = local->hw.wiphy->bands[i]; | |
1327 | sdata->rc_rateidx_mask[i] = | |
1328 | sband ? (1 << sband->n_bitrates) - 1 : 0; | |
19468413 SW |
1329 | if (sband) |
1330 | memcpy(sdata->rc_rateidx_mcs_mask[i], | |
1331 | sband->ht_cap.mcs.rx_mask, | |
1332 | sizeof(sdata->rc_rateidx_mcs_mask[i])); | |
1333 | else | |
1334 | memset(sdata->rc_rateidx_mcs_mask[i], 0, | |
1335 | sizeof(sdata->rc_rateidx_mcs_mask[i])); | |
37eb0b16 | 1336 | } |
75636525 | 1337 | |
3a25a8c8 JB |
1338 | ieee80211_set_default_queues(sdata); |
1339 | ||
75636525 JB |
1340 | /* setup type-dependent data */ |
1341 | ieee80211_setup_sdata(sdata, type); | |
f0706e82 | 1342 | |
9bc383de JB |
1343 | if (params) { |
1344 | ndev->ieee80211_ptr->use_4addr = params->use_4addr; | |
1345 | if (type == NL80211_IFTYPE_STATION) | |
1346 | sdata->u.mgd.use_4addr = params->use_4addr; | |
1347 | } | |
1348 | ||
72d78728 AN |
1349 | ndev->features |= local->hw.netdev_features; |
1350 | ||
f0706e82 JB |
1351 | ret = register_netdevice(ndev); |
1352 | if (ret) | |
1353 | goto fail; | |
1354 | ||
c771c9d8 | 1355 | mutex_lock(&local->iflist_mtx); |
79010420 | 1356 | list_add_tail_rcu(&sdata->list, &local->interfaces); |
c771c9d8 | 1357 | mutex_unlock(&local->iflist_mtx); |
79010420 | 1358 | |
f0706e82 JB |
1359 | if (new_dev) |
1360 | *new_dev = ndev; | |
f0706e82 | 1361 | |
f0706e82 JB |
1362 | return 0; |
1363 | ||
75636525 | 1364 | fail: |
f0706e82 JB |
1365 | free_netdev(ndev); |
1366 | return ret; | |
1367 | } | |
1368 | ||
f698d856 | 1369 | void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata) |
f0706e82 | 1370 | { |
f0706e82 | 1371 | ASSERT_RTNL(); |
11a843b7 | 1372 | |
c771c9d8 | 1373 | mutex_lock(&sdata->local->iflist_mtx); |
75636525 | 1374 | list_del_rcu(&sdata->list); |
c771c9d8 JB |
1375 | mutex_unlock(&sdata->local->iflist_mtx); |
1376 | ||
94c514fe AE |
1377 | /* clean up type-dependent data */ |
1378 | ieee80211_clean_sdata(sdata); | |
ece1a2e7 | 1379 | |
75636525 | 1380 | synchronize_rcu(); |
f698d856 | 1381 | unregister_netdevice(sdata->dev); |
f0706e82 JB |
1382 | } |
1383 | ||
75636525 JB |
1384 | /* |
1385 | * Remove all interfaces, may only be called at hardware unregistration | |
1386 | * time because it doesn't do RCU-safe list removals. | |
1387 | */ | |
1388 | void ieee80211_remove_interfaces(struct ieee80211_local *local) | |
f0706e82 | 1389 | { |
75636525 | 1390 | struct ieee80211_sub_if_data *sdata, *tmp; |
efe117ab | 1391 | LIST_HEAD(unreg_list); |
f0706e82 JB |
1392 | |
1393 | ASSERT_RTNL(); | |
1394 | ||
efe117ab | 1395 | mutex_lock(&local->iflist_mtx); |
75636525 JB |
1396 | list_for_each_entry_safe(sdata, tmp, &local->interfaces, list) { |
1397 | list_del(&sdata->list); | |
c771c9d8 | 1398 | |
94c514fe | 1399 | ieee80211_clean_sdata(sdata); |
ece1a2e7 | 1400 | |
efe117ab | 1401 | unregister_netdevice_queue(sdata->dev, &unreg_list); |
f0706e82 | 1402 | } |
efe117ab ED |
1403 | mutex_unlock(&local->iflist_mtx); |
1404 | unregister_netdevice_many(&unreg_list); | |
5f04d506 | 1405 | list_del(&unreg_list); |
f0706e82 | 1406 | } |
5cff20e6 JB |
1407 | |
1408 | static u32 ieee80211_idle_off(struct ieee80211_local *local, | |
1409 | const char *reason) | |
1410 | { | |
1411 | if (!(local->hw.conf.flags & IEEE80211_CONF_IDLE)) | |
1412 | return 0; | |
1413 | ||
5cff20e6 JB |
1414 | local->hw.conf.flags &= ~IEEE80211_CONF_IDLE; |
1415 | return IEEE80211_CONF_CHANGE_IDLE; | |
1416 | } | |
1417 | ||
1418 | static u32 ieee80211_idle_on(struct ieee80211_local *local) | |
1419 | { | |
1420 | if (local->hw.conf.flags & IEEE80211_CONF_IDLE) | |
1421 | return 0; | |
1422 | ||
a80f7c0b JB |
1423 | drv_flush(local, false); |
1424 | ||
5cff20e6 JB |
1425 | local->hw.conf.flags |= IEEE80211_CONF_IDLE; |
1426 | return IEEE80211_CONF_CHANGE_IDLE; | |
1427 | } | |
1428 | ||
1429 | u32 __ieee80211_recalc_idle(struct ieee80211_local *local) | |
1430 | { | |
1431 | struct ieee80211_sub_if_data *sdata; | |
1432 | int count = 0; | |
196ac1c1 | 1433 | bool working = false, scanning = false; |
67408c8c | 1434 | unsigned int led_trig_start = 0, led_trig_stop = 0; |
2eb278e0 | 1435 | struct ieee80211_roc_work *roc; |
5cff20e6 | 1436 | |
7da7cc1d JB |
1437 | #ifdef CONFIG_PROVE_LOCKING |
1438 | WARN_ON(debug_locks && !lockdep_rtnl_is_held() && | |
1439 | !lockdep_is_held(&local->iflist_mtx)); | |
1440 | #endif | |
1441 | lockdep_assert_held(&local->mtx); | |
5cff20e6 JB |
1442 | |
1443 | list_for_each_entry(sdata, &local->interfaces, list) { | |
7da7cc1d JB |
1444 | if (!ieee80211_sdata_running(sdata)) { |
1445 | sdata->vif.bss_conf.idle = true; | |
5cff20e6 | 1446 | continue; |
7da7cc1d JB |
1447 | } |
1448 | ||
1449 | sdata->old_idle = sdata->vif.bss_conf.idle; | |
1450 | ||
5cff20e6 JB |
1451 | /* do not count disabled managed interfaces */ |
1452 | if (sdata->vif.type == NL80211_IFTYPE_STATION && | |
66e67e41 JB |
1453 | !sdata->u.mgd.associated && |
1454 | !sdata->u.mgd.auth_data && | |
1455 | !sdata->u.mgd.assoc_data) { | |
7da7cc1d | 1456 | sdata->vif.bss_conf.idle = true; |
5cff20e6 | 1457 | continue; |
7da7cc1d | 1458 | } |
5cff20e6 JB |
1459 | /* do not count unused IBSS interfaces */ |
1460 | if (sdata->vif.type == NL80211_IFTYPE_ADHOC && | |
7da7cc1d JB |
1461 | !sdata->u.ibss.ssid_len) { |
1462 | sdata->vif.bss_conf.idle = true; | |
5cff20e6 | 1463 | continue; |
7da7cc1d | 1464 | } |
5cff20e6 | 1465 | /* count everything else */ |
405385f8 | 1466 | sdata->vif.bss_conf.idle = false; |
5cff20e6 JB |
1467 | count++; |
1468 | } | |
1469 | ||
196ac1c1 | 1470 | if (!local->ops->remain_on_channel) { |
2eb278e0 | 1471 | list_for_each_entry(roc, &local->roc_list, list) { |
196ac1c1 | 1472 | working = true; |
2eb278e0 | 1473 | roc->sdata->vif.bss_conf.idle = false; |
196ac1c1 | 1474 | } |
7da7cc1d JB |
1475 | } |
1476 | ||
885bd8ec EP |
1477 | if (local->scan_sdata && |
1478 | !(local->hw.flags & IEEE80211_HW_SCAN_WHILE_IDLE)) { | |
7da7cc1d JB |
1479 | scanning = true; |
1480 | local->scan_sdata->vif.bss_conf.idle = false; | |
1481 | } | |
1482 | ||
1483 | list_for_each_entry(sdata, &local->interfaces, list) { | |
0dee0068 MSS |
1484 | if (sdata->vif.type == NL80211_IFTYPE_MONITOR || |
1485 | sdata->vif.type == NL80211_IFTYPE_AP_VLAN) | |
1486 | continue; | |
7da7cc1d JB |
1487 | if (sdata->old_idle == sdata->vif.bss_conf.idle) |
1488 | continue; | |
1489 | if (!ieee80211_sdata_running(sdata)) | |
1490 | continue; | |
1491 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_IDLE); | |
1492 | } | |
1493 | ||
196ac1c1 | 1494 | if (working || scanning) |
67408c8c JB |
1495 | led_trig_start |= IEEE80211_TPT_LEDTRIG_FL_WORK; |
1496 | else | |
1497 | led_trig_stop |= IEEE80211_TPT_LEDTRIG_FL_WORK; | |
1498 | ||
1499 | if (count) | |
1500 | led_trig_start |= IEEE80211_TPT_LEDTRIG_FL_CONNECTED; | |
1501 | else | |
1502 | led_trig_stop |= IEEE80211_TPT_LEDTRIG_FL_CONNECTED; | |
1503 | ||
1504 | ieee80211_mod_tpt_led_trig(local, led_trig_start, led_trig_stop); | |
1505 | ||
7da7cc1d JB |
1506 | if (working) |
1507 | return ieee80211_idle_off(local, "working"); | |
1508 | if (scanning) | |
1509 | return ieee80211_idle_off(local, "scanning"); | |
5cff20e6 JB |
1510 | if (!count) |
1511 | return ieee80211_idle_on(local); | |
1512 | else | |
1513 | return ieee80211_idle_off(local, "in use"); | |
1514 | ||
1515 | return 0; | |
1516 | } | |
1517 | ||
1518 | void ieee80211_recalc_idle(struct ieee80211_local *local) | |
1519 | { | |
1520 | u32 chg; | |
1521 | ||
1522 | mutex_lock(&local->iflist_mtx); | |
1523 | chg = __ieee80211_recalc_idle(local); | |
1524 | mutex_unlock(&local->iflist_mtx); | |
58905ca5 JB |
1525 | if (chg) |
1526 | ieee80211_hw_config(local, chg); | |
5cff20e6 | 1527 | } |
47846c9b JB |
1528 | |
1529 | static int netdev_notify(struct notifier_block *nb, | |
1530 | unsigned long state, | |
1531 | void *ndev) | |
1532 | { | |
1533 | struct net_device *dev = ndev; | |
1534 | struct ieee80211_sub_if_data *sdata; | |
1535 | ||
1536 | if (state != NETDEV_CHANGENAME) | |
1537 | return 0; | |
1538 | ||
1539 | if (!dev->ieee80211_ptr || !dev->ieee80211_ptr->wiphy) | |
1540 | return 0; | |
1541 | ||
1542 | if (dev->ieee80211_ptr->wiphy->privid != mac80211_wiphy_privid) | |
1543 | return 0; | |
1544 | ||
1545 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
1546 | ||
2f5265e6 | 1547 | memcpy(sdata->name, dev->name, IFNAMSIZ); |
47846c9b JB |
1548 | |
1549 | ieee80211_debugfs_rename_netdev(sdata); | |
1550 | return 0; | |
1551 | } | |
1552 | ||
1553 | static struct notifier_block mac80211_netdev_notifier = { | |
1554 | .notifier_call = netdev_notify, | |
1555 | }; | |
1556 | ||
1557 | int ieee80211_iface_init(void) | |
1558 | { | |
1559 | return register_netdevice_notifier(&mac80211_netdev_notifier); | |
1560 | } | |
1561 | ||
1562 | void ieee80211_iface_exit(void) | |
1563 | { | |
1564 | unregister_netdevice_notifier(&mac80211_netdev_notifier); | |
1565 | } |