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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 | 99 | struct ieee80211_sub_if_data *nsdata; |
0d143fe1 | 100 | |
87490f6d | 101 | ASSERT_RTNL(); |
0d143fe1 JB |
102 | |
103 | /* we hold the RTNL here so can safely walk the list */ | |
104 | list_for_each_entry(nsdata, &local->interfaces, list) { | |
371a255e | 105 | if (nsdata != sdata && ieee80211_sdata_running(nsdata)) { |
0d143fe1 JB |
106 | /* |
107 | * Allow only a single IBSS interface to be up at any | |
108 | * time. This is restricted because beacon distribution | |
109 | * cannot work properly if both are in the same IBSS. | |
110 | * | |
111 | * To remove this restriction we'd have to disallow them | |
112 | * from setting the same SSID on different IBSS interfaces | |
113 | * belonging to the same hardware. Then, however, we're | |
114 | * faced with having to adopt two different TSF timers... | |
115 | */ | |
87490f6d | 116 | if (iftype == NL80211_IFTYPE_ADHOC && |
0d143fe1 JB |
117 | nsdata->vif.type == NL80211_IFTYPE_ADHOC) |
118 | return -EBUSY; | |
119 | ||
120 | /* | |
121 | * The remaining checks are only performed for interfaces | |
122 | * with the same MAC address. | |
123 | */ | |
371a255e JB |
124 | if (!ether_addr_equal(sdata->vif.addr, |
125 | nsdata->vif.addr)) | |
0d143fe1 JB |
126 | continue; |
127 | ||
128 | /* | |
129 | * check whether it may have the same address | |
130 | */ | |
87490f6d | 131 | if (!identical_mac_addr_allowed(iftype, |
0d143fe1 JB |
132 | nsdata->vif.type)) |
133 | return -ENOTUNIQ; | |
134 | ||
135 | /* | |
136 | * can only add VLANs to enabled APs | |
137 | */ | |
87490f6d | 138 | if (iftype == NL80211_IFTYPE_AP_VLAN && |
0d143fe1 JB |
139 | nsdata->vif.type == NL80211_IFTYPE_AP) |
140 | sdata->bss = &nsdata->u.ap; | |
141 | } | |
142 | } | |
143 | ||
87490f6d JB |
144 | return 0; |
145 | } | |
146 | ||
3a25a8c8 JB |
147 | static int ieee80211_check_queues(struct ieee80211_sub_if_data *sdata) |
148 | { | |
149 | int n_queues = sdata->local->hw.queues; | |
150 | int i; | |
151 | ||
152 | for (i = 0; i < IEEE80211_NUM_ACS; i++) { | |
153 | if (WARN_ON_ONCE(sdata->vif.hw_queue[i] == | |
154 | IEEE80211_INVAL_HW_QUEUE)) | |
155 | return -EINVAL; | |
156 | if (WARN_ON_ONCE(sdata->vif.hw_queue[i] >= | |
157 | n_queues)) | |
158 | return -EINVAL; | |
159 | } | |
160 | ||
bb3e10fb LC |
161 | if ((sdata->vif.type != NL80211_IFTYPE_AP) || |
162 | !(sdata->local->hw.flags & IEEE80211_HW_QUEUE_CONTROL)) { | |
3a25a8c8 JB |
163 | sdata->vif.cab_queue = IEEE80211_INVAL_HW_QUEUE; |
164 | return 0; | |
165 | } | |
166 | ||
167 | if (WARN_ON_ONCE(sdata->vif.cab_queue == IEEE80211_INVAL_HW_QUEUE)) | |
168 | return -EINVAL; | |
169 | ||
170 | if (WARN_ON_ONCE(sdata->vif.cab_queue >= n_queues)) | |
171 | return -EINVAL; | |
172 | ||
173 | return 0; | |
174 | } | |
175 | ||
85416a4f CL |
176 | void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata, |
177 | const int offset) | |
178 | { | |
179 | struct ieee80211_local *local = sdata->local; | |
180 | u32 flags = sdata->u.mntr_flags; | |
181 | ||
182 | #define ADJUST(_f, _s) do { \ | |
183 | if (flags & MONITOR_FLAG_##_f) \ | |
184 | local->fif_##_s += offset; \ | |
185 | } while (0) | |
186 | ||
187 | ADJUST(FCSFAIL, fcsfail); | |
188 | ADJUST(PLCPFAIL, plcpfail); | |
189 | ADJUST(CONTROL, control); | |
190 | ADJUST(CONTROL, pspoll); | |
191 | ADJUST(OTHER_BSS, other_bss); | |
192 | ||
193 | #undef ADJUST | |
194 | } | |
195 | ||
3a25a8c8 JB |
196 | static void ieee80211_set_default_queues(struct ieee80211_sub_if_data *sdata) |
197 | { | |
198 | struct ieee80211_local *local = sdata->local; | |
199 | int i; | |
200 | ||
201 | for (i = 0; i < IEEE80211_NUM_ACS; i++) { | |
202 | if (local->hw.flags & IEEE80211_HW_QUEUE_CONTROL) | |
203 | sdata->vif.hw_queue[i] = IEEE80211_INVAL_HW_QUEUE; | |
a9d3c05c | 204 | else if (local->hw.queues >= IEEE80211_NUM_ACS) |
3a25a8c8 | 205 | sdata->vif.hw_queue[i] = i; |
a9d3c05c JB |
206 | else |
207 | sdata->vif.hw_queue[i] = 0; | |
3a25a8c8 JB |
208 | } |
209 | sdata->vif.cab_queue = IEEE80211_INVAL_HW_QUEUE; | |
210 | } | |
211 | ||
4b6f1dd6 JB |
212 | static int ieee80211_add_virtual_monitor(struct ieee80211_local *local) |
213 | { | |
214 | struct ieee80211_sub_if_data *sdata; | |
215 | int ret; | |
216 | ||
217 | if (!(local->hw.flags & IEEE80211_HW_WANT_MONITOR_VIF)) | |
218 | return 0; | |
219 | ||
220 | if (local->monitor_sdata) | |
221 | return 0; | |
222 | ||
223 | sdata = kzalloc(sizeof(*sdata) + local->hw.vif_data_size, GFP_KERNEL); | |
224 | if (!sdata) | |
225 | return -ENOMEM; | |
226 | ||
227 | /* set up data */ | |
228 | sdata->local = local; | |
229 | sdata->vif.type = NL80211_IFTYPE_MONITOR; | |
230 | snprintf(sdata->name, IFNAMSIZ, "%s-monitor", | |
231 | wiphy_name(local->hw.wiphy)); | |
232 | ||
3a25a8c8 JB |
233 | ieee80211_set_default_queues(sdata); |
234 | ||
4b6f1dd6 JB |
235 | ret = drv_add_interface(local, sdata); |
236 | if (WARN_ON(ret)) { | |
237 | /* ok .. stupid driver, it asked for this! */ | |
238 | kfree(sdata); | |
239 | return ret; | |
240 | } | |
241 | ||
3a25a8c8 JB |
242 | ret = ieee80211_check_queues(sdata); |
243 | if (ret) { | |
244 | kfree(sdata); | |
245 | return ret; | |
246 | } | |
247 | ||
4b6f1dd6 JB |
248 | rcu_assign_pointer(local->monitor_sdata, sdata); |
249 | ||
250 | return 0; | |
251 | } | |
252 | ||
253 | static void ieee80211_del_virtual_monitor(struct ieee80211_local *local) | |
254 | { | |
255 | struct ieee80211_sub_if_data *sdata; | |
256 | ||
257 | if (!(local->hw.flags & IEEE80211_HW_WANT_MONITOR_VIF)) | |
258 | return; | |
259 | ||
260 | sdata = rtnl_dereference(local->monitor_sdata); | |
261 | ||
262 | if (!sdata) | |
263 | return; | |
264 | ||
265 | rcu_assign_pointer(local->monitor_sdata, NULL); | |
266 | synchronize_net(); | |
267 | ||
268 | drv_remove_interface(local, sdata); | |
269 | ||
270 | kfree(sdata); | |
271 | } | |
272 | ||
34d4bc4d JB |
273 | /* |
274 | * NOTE: Be very careful when changing this function, it must NOT return | |
275 | * an error on interface type changes that have been pre-checked, so most | |
276 | * checks should be in ieee80211_check_concurrent_iface. | |
277 | */ | |
278 | static int ieee80211_do_open(struct net_device *dev, bool coming_up) | |
87490f6d JB |
279 | { |
280 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
281 | struct ieee80211_local *local = sdata->local; | |
282 | struct sta_info *sta; | |
283 | u32 changed = 0; | |
284 | int res; | |
285 | u32 hw_reconf_flags = 0; | |
286 | ||
0d143fe1 JB |
287 | switch (sdata->vif.type) { |
288 | case NL80211_IFTYPE_WDS: | |
289 | if (!is_valid_ether_addr(sdata->u.wds.remote_addr)) | |
290 | return -ENOLINK; | |
291 | break; | |
665c93a9 JB |
292 | case NL80211_IFTYPE_AP_VLAN: { |
293 | struct ieee80211_sub_if_data *master; | |
294 | ||
0d143fe1 JB |
295 | if (!sdata->bss) |
296 | return -ENOLINK; | |
665c93a9 | 297 | |
0d143fe1 | 298 | list_add(&sdata->u.vlan.list, &sdata->bss->vlans); |
665c93a9 JB |
299 | |
300 | master = container_of(sdata->bss, | |
301 | struct ieee80211_sub_if_data, u.ap); | |
302 | sdata->control_port_protocol = | |
303 | master->control_port_protocol; | |
304 | sdata->control_port_no_encrypt = | |
305 | master->control_port_no_encrypt; | |
0d143fe1 | 306 | break; |
665c93a9 | 307 | } |
0d143fe1 JB |
308 | case NL80211_IFTYPE_AP: |
309 | sdata->bss = &sdata->u.ap; | |
310 | break; | |
311 | case NL80211_IFTYPE_MESH_POINT: | |
0d143fe1 JB |
312 | case NL80211_IFTYPE_STATION: |
313 | case NL80211_IFTYPE_MONITOR: | |
314 | case NL80211_IFTYPE_ADHOC: | |
315 | /* no special treatment */ | |
316 | break; | |
317 | case NL80211_IFTYPE_UNSPECIFIED: | |
2e161f78 | 318 | case NUM_NL80211_IFTYPES: |
2ca27bcf JB |
319 | case NL80211_IFTYPE_P2P_CLIENT: |
320 | case NL80211_IFTYPE_P2P_GO: | |
0d143fe1 JB |
321 | /* cannot happen */ |
322 | WARN_ON(1); | |
323 | break; | |
324 | } | |
325 | ||
326 | if (local->open_count == 0) { | |
24487981 | 327 | res = drv_start(local); |
0d143fe1 JB |
328 | if (res) |
329 | goto err_del_bss; | |
4e6cbfd0 JL |
330 | if (local->ops->napi_poll) |
331 | napi_enable(&local->napi); | |
e8975581 JB |
332 | /* we're brought up, everything changes */ |
333 | hw_reconf_flags = ~0; | |
1f87f7d3 | 334 | ieee80211_led_radio(local, true); |
67408c8c JB |
335 | ieee80211_mod_tpt_led_trig(local, |
336 | IEEE80211_TPT_LEDTRIG_FL_RADIO, 0); | |
0d143fe1 JB |
337 | } |
338 | ||
339 | /* | |
bf533e0b JB |
340 | * Copy the hopefully now-present MAC address to |
341 | * this interface, if it has the special null one. | |
0d143fe1 | 342 | */ |
bf533e0b JB |
343 | if (is_zero_ether_addr(dev->dev_addr)) { |
344 | memcpy(dev->dev_addr, | |
345 | local->hw.wiphy->perm_addr, | |
346 | ETH_ALEN); | |
347 | memcpy(dev->perm_addr, dev->dev_addr, ETH_ALEN); | |
348 | ||
349 | if (!is_valid_ether_addr(dev->dev_addr)) { | |
4d6c36fa JB |
350 | res = -EADDRNOTAVAIL; |
351 | goto err_stop; | |
0adc23f5 | 352 | } |
0d143fe1 JB |
353 | } |
354 | ||
0d143fe1 JB |
355 | switch (sdata->vif.type) { |
356 | case NL80211_IFTYPE_AP_VLAN: | |
3edaf3e6 JB |
357 | /* no need to tell driver, but set carrier */ |
358 | if (rtnl_dereference(sdata->bss->beacon)) | |
359 | netif_carrier_on(dev); | |
360 | else | |
361 | netif_carrier_off(dev); | |
0d143fe1 JB |
362 | break; |
363 | case NL80211_IFTYPE_MONITOR: | |
364 | if (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES) { | |
365 | local->cooked_mntrs++; | |
366 | break; | |
367 | } | |
368 | ||
4b6f1dd6 JB |
369 | if (local->monitors == 0 && local->open_count == 0) { |
370 | res = ieee80211_add_virtual_monitor(local); | |
371 | if (res) | |
372 | goto err_stop; | |
373 | } | |
374 | ||
0d143fe1 JB |
375 | /* must be before the call to ieee80211_configure_filter */ |
376 | local->monitors++; | |
e8975581 | 377 | if (local->monitors == 1) { |
0869aea0 JB |
378 | local->hw.conf.flags |= IEEE80211_CONF_MONITOR; |
379 | hw_reconf_flags |= IEEE80211_CONF_CHANGE_MONITOR; | |
e8975581 | 380 | } |
0d143fe1 | 381 | |
85416a4f | 382 | ieee80211_adjust_monitor_flags(sdata, 1); |
0d143fe1 | 383 | ieee80211_configure_filter(local); |
53e9b1de DG |
384 | |
385 | netif_carrier_on(dev); | |
0d143fe1 | 386 | break; |
0d143fe1 | 387 | default: |
34d4bc4d | 388 | if (coming_up) { |
4b6f1dd6 JB |
389 | ieee80211_del_virtual_monitor(local); |
390 | ||
7b7eab6f | 391 | res = drv_add_interface(local, sdata); |
34d4bc4d JB |
392 | if (res) |
393 | goto err_stop; | |
3a25a8c8 JB |
394 | res = ieee80211_check_queues(sdata); |
395 | if (res) | |
396 | goto err_del_interface; | |
34d4bc4d | 397 | } |
0d143fe1 | 398 | |
29cbe68c | 399 | if (sdata->vif.type == NL80211_IFTYPE_AP) { |
e3b90ca2 | 400 | local->fif_pspoll++; |
7be5086d | 401 | local->fif_probe_req++; |
e3b90ca2 | 402 | |
e3b90ca2 | 403 | ieee80211_configure_filter(local); |
7be5086d JB |
404 | } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) { |
405 | local->fif_probe_req++; | |
a3c9aa51 | 406 | } |
e3b90ca2 | 407 | |
0d143fe1 JB |
408 | changed |= ieee80211_reset_erp_info(sdata); |
409 | ieee80211_bss_info_change_notify(sdata, changed); | |
0d143fe1 | 410 | |
86a2ea41 | 411 | if (sdata->vif.type == NL80211_IFTYPE_STATION || |
3edaf3e6 JB |
412 | sdata->vif.type == NL80211_IFTYPE_ADHOC || |
413 | sdata->vif.type == NL80211_IFTYPE_AP) | |
0d143fe1 JB |
414 | netif_carrier_off(dev); |
415 | else | |
416 | netif_carrier_on(dev); | |
59034591 EP |
417 | |
418 | /* | |
419 | * set default queue parameters so drivers don't | |
420 | * need to initialise the hardware if the hardware | |
421 | * doesn't start up with sane defaults | |
422 | */ | |
3abead59 | 423 | ieee80211_set_wmm_default(sdata, true); |
0d143fe1 JB |
424 | } |
425 | ||
2d2080c3 JB |
426 | set_bit(SDATA_STATE_RUNNING, &sdata->state); |
427 | ||
0d143fe1 JB |
428 | if (sdata->vif.type == NL80211_IFTYPE_WDS) { |
429 | /* Create STA entry for the WDS peer */ | |
430 | sta = sta_info_alloc(sdata, sdata->u.wds.remote_addr, | |
431 | GFP_KERNEL); | |
432 | if (!sta) { | |
433 | res = -ENOMEM; | |
434 | goto err_del_interface; | |
435 | } | |
436 | ||
83d5cc01 JB |
437 | sta_info_pre_move_state(sta, IEEE80211_STA_AUTH); |
438 | sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC); | |
439 | sta_info_pre_move_state(sta, IEEE80211_STA_AUTHORIZED); | |
0d143fe1 JB |
440 | |
441 | res = sta_info_insert(sta); | |
442 | if (res) { | |
443 | /* STA has been freed */ | |
444 | goto err_del_interface; | |
445 | } | |
1be7fe8d BJ |
446 | |
447 | rate_control_rate_init(sta); | |
0d143fe1 JB |
448 | } |
449 | ||
0d143fe1 JB |
450 | /* |
451 | * set_multicast_list will be invoked by the networking core | |
452 | * which will check whether any increments here were done in | |
453 | * error and sync them down to the hardware as filter flags. | |
454 | */ | |
455 | if (sdata->flags & IEEE80211_SDATA_ALLMULTI) | |
456 | atomic_inc(&local->iff_allmultis); | |
457 | ||
458 | if (sdata->flags & IEEE80211_SDATA_PROMISC) | |
459 | atomic_inc(&local->iff_promiscs); | |
460 | ||
7da7cc1d | 461 | mutex_lock(&local->mtx); |
5cff20e6 | 462 | hw_reconf_flags |= __ieee80211_recalc_idle(local); |
7da7cc1d | 463 | mutex_unlock(&local->mtx); |
5cff20e6 | 464 | |
34d4bc4d JB |
465 | if (coming_up) |
466 | local->open_count++; | |
467 | ||
59034591 | 468 | if (hw_reconf_flags) |
e8975581 | 469 | ieee80211_hw_config(local, hw_reconf_flags); |
0d143fe1 | 470 | |
10f644a4 | 471 | ieee80211_recalc_ps(local, -1); |
965bedad | 472 | |
8a5b33f5 | 473 | netif_tx_start_all_queues(dev); |
0d143fe1 JB |
474 | |
475 | return 0; | |
476 | err_del_interface: | |
7b7eab6f | 477 | drv_remove_interface(local, sdata); |
0d143fe1 | 478 | err_stop: |
24487981 JB |
479 | if (!local->open_count) |
480 | drv_stop(local); | |
0d143fe1 JB |
481 | err_del_bss: |
482 | sdata->bss = NULL; | |
483 | if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) | |
484 | list_del(&sdata->u.vlan.list); | |
4d6c36fa | 485 | /* might already be clear but that doesn't matter */ |
2d2080c3 | 486 | clear_bit(SDATA_STATE_RUNNING, &sdata->state); |
0d143fe1 JB |
487 | return res; |
488 | } | |
489 | ||
34d4bc4d | 490 | static int ieee80211_open(struct net_device *dev) |
0d143fe1 JB |
491 | { |
492 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
34d4bc4d JB |
493 | int err; |
494 | ||
495 | /* fail early if user set an invalid address */ | |
2fcf2824 | 496 | if (!is_valid_ether_addr(dev->dev_addr)) |
34d4bc4d JB |
497 | return -EADDRNOTAVAIL; |
498 | ||
499 | err = ieee80211_check_concurrent_iface(sdata, sdata->vif.type); | |
500 | if (err) | |
501 | return err; | |
502 | ||
503 | return ieee80211_do_open(dev, true); | |
504 | } | |
505 | ||
506 | static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata, | |
507 | bool going_down) | |
508 | { | |
0d143fe1 | 509 | struct ieee80211_local *local = sdata->local; |
5061b0c2 JB |
510 | unsigned long flags; |
511 | struct sk_buff *skb, *tmp; | |
e8975581 | 512 | u32 hw_reconf_flags = 0; |
5061b0c2 | 513 | int i; |
2cf22b89 | 514 | enum nl80211_channel_type orig_ct; |
0d143fe1 | 515 | |
c29acf20 RM |
516 | clear_bit(SDATA_STATE_RUNNING, &sdata->state); |
517 | ||
352ffad6 BC |
518 | if (local->scan_sdata == sdata) |
519 | ieee80211_scan_cancel(local); | |
520 | ||
0d143fe1 JB |
521 | /* |
522 | * Stop TX on this interface first. | |
523 | */ | |
34d4bc4d | 524 | netif_tx_stop_all_queues(sdata->dev); |
0d143fe1 | 525 | |
2eb278e0 | 526 | ieee80211_roc_purge(sdata); |
af6b6374 | 527 | |
0d143fe1 JB |
528 | /* |
529 | * Remove all stations associated with this interface. | |
530 | * | |
531 | * This must be done before calling ops->remove_interface() | |
532 | * because otherwise we can later invoke ops->sta_notify() | |
533 | * whenever the STAs are removed, and that invalidates driver | |
534 | * assumptions about always getting a vif pointer that is valid | |
535 | * (because if we remove a STA after ops->remove_interface() | |
536 | * the driver will have removed the vif info already!) | |
537 | * | |
b9dcf712 JB |
538 | * This is relevant only in AP, WDS and mesh modes, since in |
539 | * all other modes we've already removed all stations when | |
540 | * disconnecting etc. | |
0d143fe1 JB |
541 | */ |
542 | sta_info_flush(local, sdata); | |
543 | ||
544 | /* | |
545 | * Don't count this interface for promisc/allmulti while it | |
546 | * is down. dev_mc_unsync() will invoke set_multicast_list | |
547 | * on the master interface which will sync these down to the | |
548 | * hardware as filter flags. | |
549 | */ | |
550 | if (sdata->flags & IEEE80211_SDATA_ALLMULTI) | |
551 | atomic_dec(&local->iff_allmultis); | |
552 | ||
553 | if (sdata->flags & IEEE80211_SDATA_PROMISC) | |
554 | atomic_dec(&local->iff_promiscs); | |
555 | ||
7be5086d | 556 | if (sdata->vif.type == NL80211_IFTYPE_AP) { |
e3b90ca2 | 557 | local->fif_pspoll--; |
7be5086d JB |
558 | local->fif_probe_req--; |
559 | } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) { | |
560 | local->fif_probe_req--; | |
561 | } | |
e3b90ca2 | 562 | |
34d4bc4d | 563 | netif_addr_lock_bh(sdata->dev); |
3b8d81e0 | 564 | spin_lock_bh(&local->filter_lock); |
34d4bc4d JB |
565 | __hw_addr_unsync(&local->mc_list, &sdata->dev->mc, |
566 | sdata->dev->addr_len); | |
3b8d81e0 | 567 | spin_unlock_bh(&local->filter_lock); |
34d4bc4d | 568 | netif_addr_unlock_bh(sdata->dev); |
3b8d81e0 | 569 | |
3ac64bee JB |
570 | ieee80211_configure_filter(local); |
571 | ||
7cbf0ba5 VN |
572 | del_timer_sync(&local->dynamic_ps_timer); |
573 | cancel_work_sync(&local->dynamic_ps_enable_work); | |
0d143fe1 JB |
574 | |
575 | /* APs need special treatment */ | |
576 | if (sdata->vif.type == NL80211_IFTYPE_AP) { | |
57c9fff3 | 577 | struct ieee80211_sub_if_data *vlan, *tmpsdata; |
40b275b6 JB |
578 | struct beacon_data *old_beacon = |
579 | rtnl_dereference(sdata->u.ap.beacon); | |
02945821 AN |
580 | struct sk_buff *old_probe_resp = |
581 | rtnl_dereference(sdata->u.ap.probe_resp); | |
0d143fe1 | 582 | |
b9dcf712 JB |
583 | /* sdata_running will return false, so this will disable */ |
584 | ieee80211_bss_info_change_notify(sdata, | |
585 | BSS_CHANGED_BEACON_ENABLED); | |
586 | ||
02945821 | 587 | /* remove beacon and probe response */ |
a9b3cd7f | 588 | RCU_INIT_POINTER(sdata->u.ap.beacon, NULL); |
02945821 | 589 | RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL); |
0d143fe1 JB |
590 | synchronize_rcu(); |
591 | kfree(old_beacon); | |
5e2e05de | 592 | kfree_skb(old_probe_resp); |
0d143fe1 JB |
593 | |
594 | /* down all dependent devices, that is VLANs */ | |
57c9fff3 | 595 | list_for_each_entry_safe(vlan, tmpsdata, &sdata->u.ap.vlans, |
0d143fe1 JB |
596 | u.vlan.list) |
597 | dev_close(vlan->dev); | |
598 | WARN_ON(!list_empty(&sdata->u.ap.vlans)); | |
6f2d9335 JB |
599 | |
600 | /* free all potentially still buffered bcast frames */ | |
601 | local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps_bc_buf); | |
602 | skb_queue_purge(&sdata->u.ap.ps_bc_buf); | |
afa762f6 EP |
603 | } else if (sdata->vif.type == NL80211_IFTYPE_STATION) { |
604 | ieee80211_mgd_stop(sdata); | |
0d143fe1 JB |
605 | } |
606 | ||
34d4bc4d JB |
607 | if (going_down) |
608 | local->open_count--; | |
0d143fe1 JB |
609 | |
610 | switch (sdata->vif.type) { | |
611 | case NL80211_IFTYPE_AP_VLAN: | |
612 | list_del(&sdata->u.vlan.list); | |
613 | /* no need to tell driver */ | |
614 | break; | |
615 | case NL80211_IFTYPE_MONITOR: | |
616 | if (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES) { | |
617 | local->cooked_mntrs--; | |
618 | break; | |
619 | } | |
620 | ||
621 | local->monitors--; | |
e8975581 | 622 | if (local->monitors == 0) { |
0869aea0 JB |
623 | local->hw.conf.flags &= ~IEEE80211_CONF_MONITOR; |
624 | hw_reconf_flags |= IEEE80211_CONF_CHANGE_MONITOR; | |
4b6f1dd6 | 625 | ieee80211_del_virtual_monitor(local); |
e8975581 | 626 | } |
0d143fe1 | 627 | |
85416a4f | 628 | ieee80211_adjust_monitor_flags(sdata, -1); |
0d143fe1 | 629 | ieee80211_configure_filter(local); |
0d143fe1 | 630 | break; |
0d143fe1 | 631 | default: |
c1475ca9 | 632 | flush_work(&sdata->work); |
35f20c14 JB |
633 | /* |
634 | * When we get here, the interface is marked down. | |
635 | * Call synchronize_rcu() to wait for the RX path | |
636 | * should it be using the interface and enqueuing | |
637 | * frames at this very time on another CPU. | |
638 | */ | |
639 | synchronize_rcu(); | |
640 | skb_queue_purge(&sdata->skb_queue); | |
641 | ||
97af7432 | 642 | /* |
b9dcf712 JB |
643 | * Disable beaconing here for mesh only, AP and IBSS |
644 | * are already taken care of. | |
97af7432 | 645 | */ |
b9dcf712 | 646 | if (sdata->vif.type == NL80211_IFTYPE_MESH_POINT) |
97af7432 BC |
647 | ieee80211_bss_info_change_notify(sdata, |
648 | BSS_CHANGED_BEACON_ENABLED); | |
97af7432 | 649 | |
b9dcf712 JB |
650 | /* |
651 | * Free all remaining keys, there shouldn't be any, | |
652 | * except maybe group keys in AP more or WDS? | |
653 | */ | |
ad0e2b5a | 654 | ieee80211_free_keys(sdata); |
b9dcf712 | 655 | |
34d4bc4d | 656 | if (going_down) |
7b7eab6f | 657 | drv_remove_interface(local, sdata); |
0d143fe1 JB |
658 | } |
659 | ||
660 | sdata->bss = NULL; | |
661 | ||
7da7cc1d | 662 | mutex_lock(&local->mtx); |
5cff20e6 | 663 | hw_reconf_flags |= __ieee80211_recalc_idle(local); |
7da7cc1d | 664 | mutex_unlock(&local->mtx); |
5cff20e6 JB |
665 | |
666 | ieee80211_recalc_ps(local, -1); | |
667 | ||
0d143fe1 | 668 | if (local->open_count == 0) { |
4e6cbfd0 JL |
669 | if (local->ops->napi_poll) |
670 | napi_disable(&local->napi); | |
ea77f12f | 671 | ieee80211_clear_tx_pending(local); |
84f6a01c | 672 | ieee80211_stop_device(local); |
0d143fe1 | 673 | |
e8975581 JB |
674 | /* no reconfiguring after stop! */ |
675 | hw_reconf_flags = 0; | |
0d143fe1 JB |
676 | } |
677 | ||
2cf22b89 BG |
678 | /* Re-calculate channel-type, in case there are multiple vifs |
679 | * on different channel types. | |
680 | */ | |
681 | orig_ct = local->_oper_channel_type; | |
682 | ieee80211_set_channel_type(local, NULL, NL80211_CHAN_NO_HT); | |
683 | ||
e8975581 | 684 | /* do after stop to avoid reconfiguring when we stop anyway */ |
2cf22b89 | 685 | if (hw_reconf_flags || (orig_ct != local->_oper_channel_type)) |
e8975581 JB |
686 | ieee80211_hw_config(local, hw_reconf_flags); |
687 | ||
5061b0c2 JB |
688 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
689 | for (i = 0; i < IEEE80211_MAX_QUEUES; i++) { | |
690 | skb_queue_walk_safe(&local->pending[i], skb, tmp) { | |
691 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); | |
692 | if (info->control.vif == &sdata->vif) { | |
693 | __skb_unlink(skb, &local->pending[i]); | |
694 | dev_kfree_skb_irq(skb); | |
695 | } | |
696 | } | |
697 | } | |
698 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
4b6f1dd6 JB |
699 | |
700 | if (local->monitors == local->open_count && local->monitors > 0) | |
701 | ieee80211_add_virtual_monitor(local); | |
34d4bc4d JB |
702 | } |
703 | ||
704 | static int ieee80211_stop(struct net_device *dev) | |
705 | { | |
706 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
707 | ||
708 | ieee80211_do_stop(sdata, true); | |
5061b0c2 | 709 | |
0d143fe1 JB |
710 | return 0; |
711 | } | |
712 | ||
713 | static void ieee80211_set_multicast_list(struct net_device *dev) | |
714 | { | |
0d143fe1 | 715 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
b4a4bf5d | 716 | struct ieee80211_local *local = sdata->local; |
0d143fe1 JB |
717 | int allmulti, promisc, sdata_allmulti, sdata_promisc; |
718 | ||
719 | allmulti = !!(dev->flags & IFF_ALLMULTI); | |
720 | promisc = !!(dev->flags & IFF_PROMISC); | |
721 | sdata_allmulti = !!(sdata->flags & IEEE80211_SDATA_ALLMULTI); | |
722 | sdata_promisc = !!(sdata->flags & IEEE80211_SDATA_PROMISC); | |
723 | ||
724 | if (allmulti != sdata_allmulti) { | |
725 | if (dev->flags & IFF_ALLMULTI) | |
726 | atomic_inc(&local->iff_allmultis); | |
727 | else | |
728 | atomic_dec(&local->iff_allmultis); | |
729 | sdata->flags ^= IEEE80211_SDATA_ALLMULTI; | |
730 | } | |
731 | ||
732 | if (promisc != sdata_promisc) { | |
733 | if (dev->flags & IFF_PROMISC) | |
734 | atomic_inc(&local->iff_promiscs); | |
735 | else | |
736 | atomic_dec(&local->iff_promiscs); | |
737 | sdata->flags ^= IEEE80211_SDATA_PROMISC; | |
738 | } | |
3b8d81e0 | 739 | spin_lock_bh(&local->filter_lock); |
22bedad3 | 740 | __hw_addr_sync(&local->mc_list, &dev->mc, dev->addr_len); |
3b8d81e0 | 741 | spin_unlock_bh(&local->filter_lock); |
3ac64bee | 742 | ieee80211_queue_work(&local->hw, &local->reconfig_filter); |
0d143fe1 JB |
743 | } |
744 | ||
75636525 JB |
745 | /* |
746 | * Called when the netdev is removed or, by the code below, before | |
747 | * the interface type changes. | |
748 | */ | |
749 | static void ieee80211_teardown_sdata(struct net_device *dev) | |
f0706e82 | 750 | { |
75636525 JB |
751 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
752 | struct ieee80211_local *local = sdata->local; | |
75636525 | 753 | int flushed; |
f0706e82 JB |
754 | int i; |
755 | ||
75636525 JB |
756 | /* free extra data */ |
757 | ieee80211_free_keys(sdata); | |
758 | ||
aee14ceb JM |
759 | ieee80211_debugfs_remove_netdev(sdata); |
760 | ||
f0706e82 | 761 | for (i = 0; i < IEEE80211_FRAGMENT_MAX; i++) |
75636525 JB |
762 | __skb_queue_purge(&sdata->fragments[i].skb_list); |
763 | sdata->fragment_next = 0; | |
11a843b7 | 764 | |
b9dcf712 JB |
765 | if (ieee80211_vif_is_mesh(&sdata->vif)) |
766 | mesh_rmc_free(sdata); | |
75636525 JB |
767 | |
768 | flushed = sta_info_flush(local, sdata); | |
769 | WARN_ON(flushed); | |
f0706e82 JB |
770 | } |
771 | ||
cf0277e7 JB |
772 | static u16 ieee80211_netdev_select_queue(struct net_device *dev, |
773 | struct sk_buff *skb) | |
774 | { | |
775 | return ieee80211_select_queue(IEEE80211_DEV_TO_SUB_IF(dev), skb); | |
776 | } | |
777 | ||
587e729e JB |
778 | static const struct net_device_ops ieee80211_dataif_ops = { |
779 | .ndo_open = ieee80211_open, | |
780 | .ndo_stop = ieee80211_stop, | |
781 | .ndo_uninit = ieee80211_teardown_sdata, | |
782 | .ndo_start_xmit = ieee80211_subif_start_xmit, | |
afc4b13d | 783 | .ndo_set_rx_mode = ieee80211_set_multicast_list, |
587e729e | 784 | .ndo_change_mtu = ieee80211_change_mtu, |
47846c9b | 785 | .ndo_set_mac_address = ieee80211_change_mac, |
cf0277e7 | 786 | .ndo_select_queue = ieee80211_netdev_select_queue, |
587e729e JB |
787 | }; |
788 | ||
cf0277e7 JB |
789 | static u16 ieee80211_monitor_select_queue(struct net_device *dev, |
790 | struct sk_buff *skb) | |
791 | { | |
792 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
793 | struct ieee80211_local *local = sdata->local; | |
794 | struct ieee80211_hdr *hdr; | |
795 | struct ieee80211_radiotap_header *rtap = (void *)skb->data; | |
796 | ||
32c5057b | 797 | if (local->hw.queues < IEEE80211_NUM_ACS) |
cf0277e7 JB |
798 | return 0; |
799 | ||
800 | if (skb->len < 4 || | |
b49bb574 | 801 | skb->len < le16_to_cpu(rtap->it_len) + 2 /* frame control */) |
cf0277e7 JB |
802 | return 0; /* doesn't matter, frame will be dropped */ |
803 | ||
b49bb574 | 804 | hdr = (void *)((u8 *)skb->data + le16_to_cpu(rtap->it_len)); |
cf0277e7 | 805 | |
00e96dec | 806 | return ieee80211_select_queue_80211(sdata, skb, hdr); |
cf0277e7 JB |
807 | } |
808 | ||
587e729e JB |
809 | static const struct net_device_ops ieee80211_monitorif_ops = { |
810 | .ndo_open = ieee80211_open, | |
811 | .ndo_stop = ieee80211_stop, | |
812 | .ndo_uninit = ieee80211_teardown_sdata, | |
813 | .ndo_start_xmit = ieee80211_monitor_start_xmit, | |
afc4b13d | 814 | .ndo_set_rx_mode = ieee80211_set_multicast_list, |
587e729e JB |
815 | .ndo_change_mtu = ieee80211_change_mtu, |
816 | .ndo_set_mac_address = eth_mac_addr, | |
cf0277e7 | 817 | .ndo_select_queue = ieee80211_monitor_select_queue, |
587e729e JB |
818 | }; |
819 | ||
820 | static void ieee80211_if_setup(struct net_device *dev) | |
821 | { | |
822 | ether_setup(dev); | |
550fd08c | 823 | dev->priv_flags &= ~IFF_TX_SKB_SHARING; |
587e729e | 824 | dev->netdev_ops = &ieee80211_dataif_ops; |
587e729e JB |
825 | dev->destructor = free_netdev; |
826 | } | |
827 | ||
1fa57d01 JB |
828 | static void ieee80211_iface_work(struct work_struct *work) |
829 | { | |
830 | struct ieee80211_sub_if_data *sdata = | |
831 | container_of(work, struct ieee80211_sub_if_data, work); | |
832 | struct ieee80211_local *local = sdata->local; | |
833 | struct sk_buff *skb; | |
344eec67 | 834 | struct sta_info *sta; |
c1475ca9 | 835 | struct ieee80211_ra_tid *ra_tid; |
1fa57d01 JB |
836 | |
837 | if (!ieee80211_sdata_running(sdata)) | |
838 | return; | |
839 | ||
840 | if (local->scanning) | |
841 | return; | |
842 | ||
843 | /* | |
844 | * ieee80211_queue_work() should have picked up most cases, | |
845 | * here we'll pick the rest. | |
846 | */ | |
847 | if (WARN(local->suspended, | |
848 | "interface work scheduled while going to suspend\n")) | |
849 | return; | |
850 | ||
851 | /* first process frames */ | |
852 | while ((skb = skb_dequeue(&sdata->skb_queue))) { | |
bed7ee6e JB |
853 | struct ieee80211_mgmt *mgmt = (void *)skb->data; |
854 | ||
c1475ca9 JB |
855 | if (skb->pkt_type == IEEE80211_SDATA_QUEUE_AGG_START) { |
856 | ra_tid = (void *)&skb->cb; | |
857 | ieee80211_start_tx_ba_cb(&sdata->vif, ra_tid->ra, | |
858 | ra_tid->tid); | |
859 | } else if (skb->pkt_type == IEEE80211_SDATA_QUEUE_AGG_STOP) { | |
860 | ra_tid = (void *)&skb->cb; | |
861 | ieee80211_stop_tx_ba_cb(&sdata->vif, ra_tid->ra, | |
862 | ra_tid->tid); | |
863 | } else if (ieee80211_is_action(mgmt->frame_control) && | |
864 | mgmt->u.action.category == WLAN_CATEGORY_BACK) { | |
bed7ee6e | 865 | int len = skb->len; |
bed7ee6e | 866 | |
a93e3644 | 867 | mutex_lock(&local->sta_mtx); |
875ae5f6 | 868 | sta = sta_info_get_bss(sdata, mgmt->sa); |
bed7ee6e JB |
869 | if (sta) { |
870 | switch (mgmt->u.action.u.addba_req.action_code) { | |
871 | case WLAN_ACTION_ADDBA_REQ: | |
872 | ieee80211_process_addba_request( | |
873 | local, sta, mgmt, len); | |
874 | break; | |
875 | case WLAN_ACTION_ADDBA_RESP: | |
876 | ieee80211_process_addba_resp(local, sta, | |
877 | mgmt, len); | |
878 | break; | |
879 | case WLAN_ACTION_DELBA: | |
880 | ieee80211_process_delba(sdata, sta, | |
881 | mgmt, len); | |
882 | break; | |
883 | default: | |
884 | WARN_ON(1); | |
885 | break; | |
886 | } | |
887 | } | |
a93e3644 | 888 | mutex_unlock(&local->sta_mtx); |
344eec67 JB |
889 | } else if (ieee80211_is_data_qos(mgmt->frame_control)) { |
890 | struct ieee80211_hdr *hdr = (void *)mgmt; | |
891 | /* | |
892 | * So the frame isn't mgmt, but frame_control | |
893 | * is at the right place anyway, of course, so | |
894 | * the if statement is correct. | |
895 | * | |
896 | * Warn if we have other data frame types here, | |
897 | * they must not get here. | |
898 | */ | |
899 | WARN_ON(hdr->frame_control & | |
900 | cpu_to_le16(IEEE80211_STYPE_NULLFUNC)); | |
901 | WARN_ON(!(hdr->seq_ctrl & | |
902 | cpu_to_le16(IEEE80211_SCTL_FRAG))); | |
903 | /* | |
904 | * This was a fragment of a frame, received while | |
905 | * a block-ack session was active. That cannot be | |
906 | * right, so terminate the session. | |
907 | */ | |
a93e3644 | 908 | mutex_lock(&local->sta_mtx); |
875ae5f6 | 909 | sta = sta_info_get_bss(sdata, mgmt->sa); |
344eec67 JB |
910 | if (sta) { |
911 | u16 tid = *ieee80211_get_qos_ctl(hdr) & | |
912 | IEEE80211_QOS_CTL_TID_MASK; | |
913 | ||
914 | __ieee80211_stop_rx_ba_session( | |
915 | sta, tid, WLAN_BACK_RECIPIENT, | |
53f73c09 JB |
916 | WLAN_REASON_QSTA_REQUIRE_SETUP, |
917 | true); | |
344eec67 | 918 | } |
a93e3644 | 919 | mutex_unlock(&local->sta_mtx); |
bed7ee6e | 920 | } else switch (sdata->vif.type) { |
1fa57d01 JB |
921 | case NL80211_IFTYPE_STATION: |
922 | ieee80211_sta_rx_queued_mgmt(sdata, skb); | |
923 | break; | |
924 | case NL80211_IFTYPE_ADHOC: | |
925 | ieee80211_ibss_rx_queued_mgmt(sdata, skb); | |
926 | break; | |
927 | case NL80211_IFTYPE_MESH_POINT: | |
928 | if (!ieee80211_vif_is_mesh(&sdata->vif)) | |
929 | break; | |
930 | ieee80211_mesh_rx_queued_mgmt(sdata, skb); | |
931 | break; | |
932 | default: | |
933 | WARN(1, "frame for unexpected interface type"); | |
1fa57d01 JB |
934 | break; |
935 | } | |
36b3a628 JB |
936 | |
937 | kfree_skb(skb); | |
1fa57d01 JB |
938 | } |
939 | ||
940 | /* then other type-dependent work */ | |
941 | switch (sdata->vif.type) { | |
942 | case NL80211_IFTYPE_STATION: | |
943 | ieee80211_sta_work(sdata); | |
944 | break; | |
945 | case NL80211_IFTYPE_ADHOC: | |
946 | ieee80211_ibss_work(sdata); | |
947 | break; | |
948 | case NL80211_IFTYPE_MESH_POINT: | |
949 | if (!ieee80211_vif_is_mesh(&sdata->vif)) | |
950 | break; | |
951 | ieee80211_mesh_work(sdata); | |
952 | break; | |
953 | default: | |
954 | break; | |
955 | } | |
956 | } | |
957 | ||
958 | ||
75636525 JB |
959 | /* |
960 | * Helper function to initialise an interface to a specific type. | |
961 | */ | |
962 | static void ieee80211_setup_sdata(struct ieee80211_sub_if_data *sdata, | |
05c914fe | 963 | enum nl80211_iftype type) |
f0706e82 | 964 | { |
75636525 JB |
965 | /* clear type-dependent union */ |
966 | memset(&sdata->u, 0, sizeof(sdata->u)); | |
967 | ||
968 | /* and set some type-dependent values */ | |
969 | sdata->vif.type = type; | |
2ca27bcf | 970 | sdata->vif.p2p = false; |
587e729e | 971 | sdata->dev->netdev_ops = &ieee80211_dataif_ops; |
60719ffd | 972 | sdata->wdev.iftype = type; |
75636525 | 973 | |
a621fa4d JB |
974 | sdata->control_port_protocol = cpu_to_be16(ETH_P_PAE); |
975 | sdata->control_port_no_encrypt = false; | |
976 | ||
b53be792 SW |
977 | sdata->noack_map = 0; |
978 | ||
75636525 JB |
979 | /* only monitor differs */ |
980 | sdata->dev->type = ARPHRD_ETHER; | |
981 | ||
35f20c14 | 982 | skb_queue_head_init(&sdata->skb_queue); |
1fa57d01 | 983 | INIT_WORK(&sdata->work, ieee80211_iface_work); |
35f20c14 | 984 | |
75636525 | 985 | switch (type) { |
2ca27bcf JB |
986 | case NL80211_IFTYPE_P2P_GO: |
987 | type = NL80211_IFTYPE_AP; | |
988 | sdata->vif.type = type; | |
989 | sdata->vif.p2p = true; | |
990 | /* fall through */ | |
05c914fe | 991 | case NL80211_IFTYPE_AP: |
75636525 JB |
992 | skb_queue_head_init(&sdata->u.ap.ps_bc_buf); |
993 | INIT_LIST_HEAD(&sdata->u.ap.vlans); | |
994 | break; | |
2ca27bcf JB |
995 | case NL80211_IFTYPE_P2P_CLIENT: |
996 | type = NL80211_IFTYPE_STATION; | |
997 | sdata->vif.type = type; | |
998 | sdata->vif.p2p = true; | |
999 | /* fall through */ | |
05c914fe | 1000 | case NL80211_IFTYPE_STATION: |
9c6bd790 | 1001 | ieee80211_sta_setup_sdata(sdata); |
472dbc45 | 1002 | break; |
46900298 JB |
1003 | case NL80211_IFTYPE_ADHOC: |
1004 | ieee80211_ibss_setup_sdata(sdata); | |
1005 | break; | |
05c914fe | 1006 | case NL80211_IFTYPE_MESH_POINT: |
75636525 JB |
1007 | if (ieee80211_vif_is_mesh(&sdata->vif)) |
1008 | ieee80211_mesh_init_sdata(sdata); | |
1009 | break; | |
05c914fe | 1010 | case NL80211_IFTYPE_MONITOR: |
75636525 | 1011 | sdata->dev->type = ARPHRD_IEEE80211_RADIOTAP; |
587e729e | 1012 | sdata->dev->netdev_ops = &ieee80211_monitorif_ops; |
75636525 JB |
1013 | sdata->u.mntr_flags = MONITOR_FLAG_CONTROL | |
1014 | MONITOR_FLAG_OTHER_BSS; | |
1015 | break; | |
05c914fe JB |
1016 | case NL80211_IFTYPE_WDS: |
1017 | case NL80211_IFTYPE_AP_VLAN: | |
75636525 | 1018 | break; |
05c914fe | 1019 | case NL80211_IFTYPE_UNSPECIFIED: |
2e161f78 | 1020 | case NUM_NL80211_IFTYPES: |
75636525 JB |
1021 | BUG(); |
1022 | break; | |
1023 | } | |
1024 | ||
1025 | ieee80211_debugfs_add_netdev(sdata); | |
1026 | } | |
1027 | ||
94c514fe AE |
1028 | static void ieee80211_clean_sdata(struct ieee80211_sub_if_data *sdata) |
1029 | { | |
1030 | switch (sdata->vif.type) { | |
1031 | case NL80211_IFTYPE_MESH_POINT: | |
1032 | mesh_path_flush_by_iface(sdata); | |
1033 | break; | |
1034 | ||
1035 | default: | |
1036 | break; | |
1037 | } | |
1038 | } | |
1039 | ||
34d4bc4d JB |
1040 | static int ieee80211_runtime_change_iftype(struct ieee80211_sub_if_data *sdata, |
1041 | enum nl80211_iftype type) | |
1042 | { | |
1043 | struct ieee80211_local *local = sdata->local; | |
1044 | int ret, err; | |
2ca27bcf JB |
1045 | enum nl80211_iftype internal_type = type; |
1046 | bool p2p = false; | |
34d4bc4d JB |
1047 | |
1048 | ASSERT_RTNL(); | |
1049 | ||
1050 | if (!local->ops->change_interface) | |
1051 | return -EBUSY; | |
1052 | ||
1053 | switch (sdata->vif.type) { | |
1054 | case NL80211_IFTYPE_AP: | |
1055 | case NL80211_IFTYPE_STATION: | |
1056 | case NL80211_IFTYPE_ADHOC: | |
1057 | /* | |
1058 | * Could maybe also all others here? | |
1059 | * Just not sure how that interacts | |
1060 | * with the RX/config path e.g. for | |
1061 | * mesh. | |
1062 | */ | |
1063 | break; | |
1064 | default: | |
1065 | return -EBUSY; | |
1066 | } | |
1067 | ||
1068 | switch (type) { | |
1069 | case NL80211_IFTYPE_AP: | |
1070 | case NL80211_IFTYPE_STATION: | |
1071 | case NL80211_IFTYPE_ADHOC: | |
1072 | /* | |
1073 | * Could probably support everything | |
1074 | * but WDS here (WDS do_open can fail | |
1075 | * under memory pressure, which this | |
1076 | * code isn't prepared to handle). | |
1077 | */ | |
1078 | break; | |
2ca27bcf JB |
1079 | case NL80211_IFTYPE_P2P_CLIENT: |
1080 | p2p = true; | |
1081 | internal_type = NL80211_IFTYPE_STATION; | |
1082 | break; | |
1083 | case NL80211_IFTYPE_P2P_GO: | |
1084 | p2p = true; | |
1085 | internal_type = NL80211_IFTYPE_AP; | |
1086 | break; | |
34d4bc4d JB |
1087 | default: |
1088 | return -EBUSY; | |
1089 | } | |
1090 | ||
2ca27bcf | 1091 | ret = ieee80211_check_concurrent_iface(sdata, internal_type); |
34d4bc4d JB |
1092 | if (ret) |
1093 | return ret; | |
1094 | ||
1095 | ieee80211_do_stop(sdata, false); | |
1096 | ||
1097 | ieee80211_teardown_sdata(sdata->dev); | |
1098 | ||
2ca27bcf | 1099 | ret = drv_change_interface(local, sdata, internal_type, p2p); |
34d4bc4d JB |
1100 | if (ret) |
1101 | type = sdata->vif.type; | |
1102 | ||
3a25a8c8 JB |
1103 | /* |
1104 | * Ignore return value here, there's not much we can do since | |
1105 | * the driver changed the interface type internally already. | |
1106 | * The warnings will hopefully make driver authors fix it :-) | |
1107 | */ | |
1108 | ieee80211_check_queues(sdata); | |
1109 | ||
34d4bc4d JB |
1110 | ieee80211_setup_sdata(sdata, type); |
1111 | ||
1112 | err = ieee80211_do_open(sdata->dev, false); | |
1113 | WARN(err, "type change: do_open returned %d", err); | |
1114 | ||
1115 | return ret; | |
1116 | } | |
1117 | ||
f3947e2d | 1118 | int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, |
05c914fe | 1119 | enum nl80211_iftype type) |
75636525 | 1120 | { |
34d4bc4d JB |
1121 | int ret; |
1122 | ||
f3947e2d JB |
1123 | ASSERT_RTNL(); |
1124 | ||
2ca27bcf | 1125 | if (type == ieee80211_vif_type_p2p(&sdata->vif)) |
f3947e2d JB |
1126 | return 0; |
1127 | ||
e60c7744 | 1128 | /* Setting ad-hoc mode on non-IBSS channel is not supported. */ |
dcebf45c PR |
1129 | if (sdata->local->oper_channel->flags & IEEE80211_CHAN_NO_IBSS && |
1130 | type == NL80211_IFTYPE_ADHOC) | |
e60c7744 JB |
1131 | return -EOPNOTSUPP; |
1132 | ||
34d4bc4d JB |
1133 | if (ieee80211_sdata_running(sdata)) { |
1134 | ret = ieee80211_runtime_change_iftype(sdata, type); | |
1135 | if (ret) | |
1136 | return ret; | |
1137 | } else { | |
1138 | /* Purge and reset type-dependent state. */ | |
1139 | ieee80211_teardown_sdata(sdata->dev); | |
1140 | ieee80211_setup_sdata(sdata, type); | |
1141 | } | |
75636525 JB |
1142 | |
1143 | /* reset some values that shouldn't be kept across type changes */ | |
bda3933a | 1144 | sdata->vif.bss_conf.basic_rates = |
96dd22ac JB |
1145 | ieee80211_mandatory_rates(sdata->local, |
1146 | sdata->local->hw.conf.channel->band); | |
75636525 | 1147 | sdata->drop_unencrypted = 0; |
9bc383de JB |
1148 | if (type == NL80211_IFTYPE_STATION) |
1149 | sdata->u.mgd.use_4addr = false; | |
f3947e2d JB |
1150 | |
1151 | return 0; | |
f0706e82 JB |
1152 | } |
1153 | ||
fa9029f8 JB |
1154 | static void ieee80211_assign_perm_addr(struct ieee80211_local *local, |
1155 | struct net_device *dev, | |
1156 | enum nl80211_iftype type) | |
1157 | { | |
1158 | struct ieee80211_sub_if_data *sdata; | |
1159 | u64 mask, start, addr, val, inc; | |
1160 | u8 *m; | |
1161 | u8 tmp_addr[ETH_ALEN]; | |
1162 | int i; | |
1163 | ||
1164 | /* default ... something at least */ | |
1165 | memcpy(dev->perm_addr, local->hw.wiphy->perm_addr, ETH_ALEN); | |
1166 | ||
1167 | if (is_zero_ether_addr(local->hw.wiphy->addr_mask) && | |
1168 | local->hw.wiphy->n_addresses <= 1) | |
1169 | return; | |
1170 | ||
1171 | ||
1172 | mutex_lock(&local->iflist_mtx); | |
1173 | ||
1174 | switch (type) { | |
1175 | case NL80211_IFTYPE_MONITOR: | |
1176 | /* doesn't matter */ | |
1177 | break; | |
1178 | case NL80211_IFTYPE_WDS: | |
1179 | case NL80211_IFTYPE_AP_VLAN: | |
1180 | /* match up with an AP interface */ | |
1181 | list_for_each_entry(sdata, &local->interfaces, list) { | |
1182 | if (sdata->vif.type != NL80211_IFTYPE_AP) | |
1183 | continue; | |
1184 | memcpy(dev->perm_addr, sdata->vif.addr, ETH_ALEN); | |
1185 | break; | |
1186 | } | |
1187 | /* keep default if no AP interface present */ | |
1188 | break; | |
1189 | default: | |
1190 | /* assign a new address if possible -- try n_addresses first */ | |
1191 | for (i = 0; i < local->hw.wiphy->n_addresses; i++) { | |
1192 | bool used = false; | |
1193 | ||
1194 | list_for_each_entry(sdata, &local->interfaces, list) { | |
1195 | if (memcmp(local->hw.wiphy->addresses[i].addr, | |
1196 | sdata->vif.addr, ETH_ALEN) == 0) { | |
1197 | used = true; | |
1198 | break; | |
1199 | } | |
1200 | } | |
1201 | ||
1202 | if (!used) { | |
1203 | memcpy(dev->perm_addr, | |
1204 | local->hw.wiphy->addresses[i].addr, | |
1205 | ETH_ALEN); | |
1206 | break; | |
1207 | } | |
1208 | } | |
1209 | ||
1210 | /* try mask if available */ | |
1211 | if (is_zero_ether_addr(local->hw.wiphy->addr_mask)) | |
1212 | break; | |
1213 | ||
1214 | m = local->hw.wiphy->addr_mask; | |
1215 | mask = ((u64)m[0] << 5*8) | ((u64)m[1] << 4*8) | | |
1216 | ((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) | | |
1217 | ((u64)m[4] << 1*8) | ((u64)m[5] << 0*8); | |
1218 | ||
1219 | if (__ffs64(mask) + hweight64(mask) != fls64(mask)) { | |
1220 | /* not a contiguous mask ... not handled now! */ | |
bdcbd8e0 | 1221 | pr_info("not contiguous\n"); |
fa9029f8 JB |
1222 | break; |
1223 | } | |
1224 | ||
1225 | m = local->hw.wiphy->perm_addr; | |
1226 | start = ((u64)m[0] << 5*8) | ((u64)m[1] << 4*8) | | |
1227 | ((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) | | |
1228 | ((u64)m[4] << 1*8) | ((u64)m[5] << 0*8); | |
1229 | ||
1230 | inc = 1ULL<<__ffs64(mask); | |
1231 | val = (start & mask); | |
1232 | addr = (start & ~mask) | (val & mask); | |
1233 | do { | |
1234 | bool used = false; | |
1235 | ||
1236 | tmp_addr[5] = addr >> 0*8; | |
1237 | tmp_addr[4] = addr >> 1*8; | |
1238 | tmp_addr[3] = addr >> 2*8; | |
1239 | tmp_addr[2] = addr >> 3*8; | |
1240 | tmp_addr[1] = addr >> 4*8; | |
1241 | tmp_addr[0] = addr >> 5*8; | |
1242 | ||
1243 | val += inc; | |
1244 | ||
1245 | list_for_each_entry(sdata, &local->interfaces, list) { | |
1246 | if (memcmp(tmp_addr, sdata->vif.addr, | |
1247 | ETH_ALEN) == 0) { | |
1248 | used = true; | |
1249 | break; | |
1250 | } | |
1251 | } | |
1252 | ||
1253 | if (!used) { | |
1254 | memcpy(dev->perm_addr, tmp_addr, ETH_ALEN); | |
1255 | break; | |
1256 | } | |
1257 | addr = (start & ~mask) | (val & mask); | |
1258 | } while (addr != start); | |
1259 | ||
1260 | break; | |
1261 | } | |
1262 | ||
1263 | mutex_unlock(&local->iflist_mtx); | |
1264 | } | |
1265 | ||
3e122be0 | 1266 | int ieee80211_if_add(struct ieee80211_local *local, const char *name, |
05c914fe | 1267 | struct net_device **new_dev, enum nl80211_iftype type, |
ee385855 | 1268 | struct vif_params *params) |
f0706e82 JB |
1269 | { |
1270 | struct net_device *ndev; | |
f0706e82 | 1271 | struct ieee80211_sub_if_data *sdata = NULL; |
75636525 | 1272 | int ret, i; |
ded81f6b | 1273 | int txqs = 1; |
f0706e82 JB |
1274 | |
1275 | ASSERT_RTNL(); | |
75636525 | 1276 | |
ded81f6b JB |
1277 | if (local->hw.queues >= IEEE80211_NUM_ACS) |
1278 | txqs = IEEE80211_NUM_ACS; | |
1279 | ||
55d99059 | 1280 | ndev = alloc_netdev_mqs(sizeof(*sdata) + local->hw.vif_data_size, |
ded81f6b | 1281 | name, ieee80211_if_setup, txqs, 1); |
f0706e82 JB |
1282 | if (!ndev) |
1283 | return -ENOMEM; | |
a272a720 | 1284 | dev_net_set(ndev, wiphy_net(local->hw.wiphy)); |
f0706e82 | 1285 | |
f3994ece JB |
1286 | ndev->needed_headroom = local->tx_headroom + |
1287 | 4*6 /* four MAC addresses */ | |
1288 | + 2 + 2 + 2 + 2 /* ctl, dur, seq, qos */ | |
1289 | + 6 /* mesh */ | |
1290 | + 8 /* rfc1042/bridge tunnel */ | |
1291 | - ETH_HLEN /* ethernet hard_header_len */ | |
1292 | + IEEE80211_ENCRYPT_HEADROOM; | |
1293 | ndev->needed_tailroom = IEEE80211_ENCRYPT_TAILROOM; | |
1294 | ||
59e7e707 TLSC |
1295 | ret = dev_alloc_name(ndev, ndev->name); |
1296 | if (ret < 0) | |
1297 | goto fail; | |
1298 | ||
fa9029f8 JB |
1299 | ieee80211_assign_perm_addr(local, ndev, type); |
1300 | memcpy(ndev->dev_addr, ndev->perm_addr, ETH_ALEN); | |
f0706e82 JB |
1301 | SET_NETDEV_DEV(ndev, wiphy_dev(local->hw.wiphy)); |
1302 | ||
3e122be0 JB |
1303 | /* don't use IEEE80211_DEV_TO_SUB_IF because it checks too much */ |
1304 | sdata = netdev_priv(ndev); | |
f0706e82 | 1305 | ndev->ieee80211_ptr = &sdata->wdev; |
47846c9b JB |
1306 | memcpy(sdata->vif.addr, ndev->dev_addr, ETH_ALEN); |
1307 | memcpy(sdata->name, ndev->name, IFNAMSIZ); | |
75636525 JB |
1308 | |
1309 | /* initialise type-independent data */ | |
f0706e82 | 1310 | sdata->wdev.wiphy = local->hw.wiphy; |
f0706e82 | 1311 | sdata->local = local; |
75636525 | 1312 | sdata->dev = ndev; |
68542962 JO |
1313 | #ifdef CONFIG_INET |
1314 | sdata->arp_filter_state = true; | |
1315 | #endif | |
75636525 JB |
1316 | |
1317 | for (i = 0; i < IEEE80211_FRAGMENT_MAX; i++) | |
1318 | skb_queue_head_init(&sdata->fragments[i].skb_list); | |
1319 | ||
1320 | INIT_LIST_HEAD(&sdata->key_list); | |
1321 | ||
37eb0b16 JM |
1322 | for (i = 0; i < IEEE80211_NUM_BANDS; i++) { |
1323 | struct ieee80211_supported_band *sband; | |
1324 | sband = local->hw.wiphy->bands[i]; | |
1325 | sdata->rc_rateidx_mask[i] = | |
1326 | sband ? (1 << sband->n_bitrates) - 1 : 0; | |
19468413 SW |
1327 | if (sband) |
1328 | memcpy(sdata->rc_rateidx_mcs_mask[i], | |
1329 | sband->ht_cap.mcs.rx_mask, | |
1330 | sizeof(sdata->rc_rateidx_mcs_mask[i])); | |
1331 | else | |
1332 | memset(sdata->rc_rateidx_mcs_mask[i], 0, | |
1333 | sizeof(sdata->rc_rateidx_mcs_mask[i])); | |
37eb0b16 | 1334 | } |
75636525 | 1335 | |
3a25a8c8 JB |
1336 | ieee80211_set_default_queues(sdata); |
1337 | ||
75636525 JB |
1338 | /* setup type-dependent data */ |
1339 | ieee80211_setup_sdata(sdata, type); | |
f0706e82 | 1340 | |
9bc383de JB |
1341 | if (params) { |
1342 | ndev->ieee80211_ptr->use_4addr = params->use_4addr; | |
1343 | if (type == NL80211_IFTYPE_STATION) | |
1344 | sdata->u.mgd.use_4addr = params->use_4addr; | |
1345 | } | |
1346 | ||
72d78728 AN |
1347 | ndev->features |= local->hw.netdev_features; |
1348 | ||
f0706e82 JB |
1349 | ret = register_netdevice(ndev); |
1350 | if (ret) | |
1351 | goto fail; | |
1352 | ||
c771c9d8 | 1353 | mutex_lock(&local->iflist_mtx); |
79010420 | 1354 | list_add_tail_rcu(&sdata->list, &local->interfaces); |
c771c9d8 | 1355 | mutex_unlock(&local->iflist_mtx); |
79010420 | 1356 | |
f0706e82 JB |
1357 | if (new_dev) |
1358 | *new_dev = ndev; | |
f0706e82 | 1359 | |
f0706e82 JB |
1360 | return 0; |
1361 | ||
75636525 | 1362 | fail: |
f0706e82 JB |
1363 | free_netdev(ndev); |
1364 | return ret; | |
1365 | } | |
1366 | ||
f698d856 | 1367 | void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata) |
f0706e82 | 1368 | { |
f0706e82 | 1369 | ASSERT_RTNL(); |
11a843b7 | 1370 | |
c771c9d8 | 1371 | mutex_lock(&sdata->local->iflist_mtx); |
75636525 | 1372 | list_del_rcu(&sdata->list); |
c771c9d8 JB |
1373 | mutex_unlock(&sdata->local->iflist_mtx); |
1374 | ||
94c514fe AE |
1375 | /* clean up type-dependent data */ |
1376 | ieee80211_clean_sdata(sdata); | |
ece1a2e7 | 1377 | |
75636525 | 1378 | synchronize_rcu(); |
f698d856 | 1379 | unregister_netdevice(sdata->dev); |
f0706e82 JB |
1380 | } |
1381 | ||
75636525 JB |
1382 | /* |
1383 | * Remove all interfaces, may only be called at hardware unregistration | |
1384 | * time because it doesn't do RCU-safe list removals. | |
1385 | */ | |
1386 | void ieee80211_remove_interfaces(struct ieee80211_local *local) | |
f0706e82 | 1387 | { |
75636525 | 1388 | struct ieee80211_sub_if_data *sdata, *tmp; |
efe117ab | 1389 | LIST_HEAD(unreg_list); |
f0706e82 JB |
1390 | |
1391 | ASSERT_RTNL(); | |
1392 | ||
efe117ab | 1393 | mutex_lock(&local->iflist_mtx); |
75636525 JB |
1394 | list_for_each_entry_safe(sdata, tmp, &local->interfaces, list) { |
1395 | list_del(&sdata->list); | |
c771c9d8 | 1396 | |
94c514fe | 1397 | ieee80211_clean_sdata(sdata); |
ece1a2e7 | 1398 | |
efe117ab | 1399 | unregister_netdevice_queue(sdata->dev, &unreg_list); |
f0706e82 | 1400 | } |
efe117ab ED |
1401 | mutex_unlock(&local->iflist_mtx); |
1402 | unregister_netdevice_many(&unreg_list); | |
5f04d506 | 1403 | list_del(&unreg_list); |
f0706e82 | 1404 | } |
5cff20e6 JB |
1405 | |
1406 | static u32 ieee80211_idle_off(struct ieee80211_local *local, | |
1407 | const char *reason) | |
1408 | { | |
1409 | if (!(local->hw.conf.flags & IEEE80211_CONF_IDLE)) | |
1410 | return 0; | |
1411 | ||
5cff20e6 JB |
1412 | local->hw.conf.flags &= ~IEEE80211_CONF_IDLE; |
1413 | return IEEE80211_CONF_CHANGE_IDLE; | |
1414 | } | |
1415 | ||
1416 | static u32 ieee80211_idle_on(struct ieee80211_local *local) | |
1417 | { | |
1418 | if (local->hw.conf.flags & IEEE80211_CONF_IDLE) | |
1419 | return 0; | |
1420 | ||
a80f7c0b JB |
1421 | drv_flush(local, false); |
1422 | ||
5cff20e6 JB |
1423 | local->hw.conf.flags |= IEEE80211_CONF_IDLE; |
1424 | return IEEE80211_CONF_CHANGE_IDLE; | |
1425 | } | |
1426 | ||
1427 | u32 __ieee80211_recalc_idle(struct ieee80211_local *local) | |
1428 | { | |
1429 | struct ieee80211_sub_if_data *sdata; | |
1430 | int count = 0; | |
196ac1c1 | 1431 | bool working = false, scanning = false; |
67408c8c | 1432 | unsigned int led_trig_start = 0, led_trig_stop = 0; |
2eb278e0 | 1433 | struct ieee80211_roc_work *roc; |
5cff20e6 | 1434 | |
7da7cc1d JB |
1435 | #ifdef CONFIG_PROVE_LOCKING |
1436 | WARN_ON(debug_locks && !lockdep_rtnl_is_held() && | |
1437 | !lockdep_is_held(&local->iflist_mtx)); | |
1438 | #endif | |
1439 | lockdep_assert_held(&local->mtx); | |
5cff20e6 JB |
1440 | |
1441 | list_for_each_entry(sdata, &local->interfaces, list) { | |
7da7cc1d JB |
1442 | if (!ieee80211_sdata_running(sdata)) { |
1443 | sdata->vif.bss_conf.idle = true; | |
5cff20e6 | 1444 | continue; |
7da7cc1d JB |
1445 | } |
1446 | ||
1447 | sdata->old_idle = sdata->vif.bss_conf.idle; | |
1448 | ||
5cff20e6 JB |
1449 | /* do not count disabled managed interfaces */ |
1450 | if (sdata->vif.type == NL80211_IFTYPE_STATION && | |
66e67e41 JB |
1451 | !sdata->u.mgd.associated && |
1452 | !sdata->u.mgd.auth_data && | |
1453 | !sdata->u.mgd.assoc_data) { | |
7da7cc1d | 1454 | sdata->vif.bss_conf.idle = true; |
5cff20e6 | 1455 | continue; |
7da7cc1d | 1456 | } |
5cff20e6 JB |
1457 | /* do not count unused IBSS interfaces */ |
1458 | if (sdata->vif.type == NL80211_IFTYPE_ADHOC && | |
7da7cc1d JB |
1459 | !sdata->u.ibss.ssid_len) { |
1460 | sdata->vif.bss_conf.idle = true; | |
5cff20e6 | 1461 | continue; |
7da7cc1d | 1462 | } |
5cff20e6 | 1463 | /* count everything else */ |
405385f8 | 1464 | sdata->vif.bss_conf.idle = false; |
5cff20e6 JB |
1465 | count++; |
1466 | } | |
1467 | ||
196ac1c1 | 1468 | if (!local->ops->remain_on_channel) { |
2eb278e0 | 1469 | list_for_each_entry(roc, &local->roc_list, list) { |
196ac1c1 | 1470 | working = true; |
2eb278e0 | 1471 | roc->sdata->vif.bss_conf.idle = false; |
196ac1c1 | 1472 | } |
7da7cc1d JB |
1473 | } |
1474 | ||
885bd8ec EP |
1475 | if (local->scan_sdata && |
1476 | !(local->hw.flags & IEEE80211_HW_SCAN_WHILE_IDLE)) { | |
7da7cc1d JB |
1477 | scanning = true; |
1478 | local->scan_sdata->vif.bss_conf.idle = false; | |
1479 | } | |
1480 | ||
1481 | list_for_each_entry(sdata, &local->interfaces, list) { | |
0dee0068 MSS |
1482 | if (sdata->vif.type == NL80211_IFTYPE_MONITOR || |
1483 | sdata->vif.type == NL80211_IFTYPE_AP_VLAN) | |
1484 | continue; | |
7da7cc1d JB |
1485 | if (sdata->old_idle == sdata->vif.bss_conf.idle) |
1486 | continue; | |
1487 | if (!ieee80211_sdata_running(sdata)) | |
1488 | continue; | |
1489 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_IDLE); | |
1490 | } | |
1491 | ||
196ac1c1 | 1492 | if (working || scanning) |
67408c8c JB |
1493 | led_trig_start |= IEEE80211_TPT_LEDTRIG_FL_WORK; |
1494 | else | |
1495 | led_trig_stop |= IEEE80211_TPT_LEDTRIG_FL_WORK; | |
1496 | ||
1497 | if (count) | |
1498 | led_trig_start |= IEEE80211_TPT_LEDTRIG_FL_CONNECTED; | |
1499 | else | |
1500 | led_trig_stop |= IEEE80211_TPT_LEDTRIG_FL_CONNECTED; | |
1501 | ||
1502 | ieee80211_mod_tpt_led_trig(local, led_trig_start, led_trig_stop); | |
1503 | ||
7da7cc1d JB |
1504 | if (working) |
1505 | return ieee80211_idle_off(local, "working"); | |
1506 | if (scanning) | |
1507 | return ieee80211_idle_off(local, "scanning"); | |
5cff20e6 JB |
1508 | if (!count) |
1509 | return ieee80211_idle_on(local); | |
1510 | else | |
1511 | return ieee80211_idle_off(local, "in use"); | |
1512 | ||
1513 | return 0; | |
1514 | } | |
1515 | ||
1516 | void ieee80211_recalc_idle(struct ieee80211_local *local) | |
1517 | { | |
1518 | u32 chg; | |
1519 | ||
1520 | mutex_lock(&local->iflist_mtx); | |
1521 | chg = __ieee80211_recalc_idle(local); | |
1522 | mutex_unlock(&local->iflist_mtx); | |
58905ca5 JB |
1523 | if (chg) |
1524 | ieee80211_hw_config(local, chg); | |
5cff20e6 | 1525 | } |
47846c9b JB |
1526 | |
1527 | static int netdev_notify(struct notifier_block *nb, | |
1528 | unsigned long state, | |
1529 | void *ndev) | |
1530 | { | |
1531 | struct net_device *dev = ndev; | |
1532 | struct ieee80211_sub_if_data *sdata; | |
1533 | ||
1534 | if (state != NETDEV_CHANGENAME) | |
1535 | return 0; | |
1536 | ||
1537 | if (!dev->ieee80211_ptr || !dev->ieee80211_ptr->wiphy) | |
1538 | return 0; | |
1539 | ||
1540 | if (dev->ieee80211_ptr->wiphy->privid != mac80211_wiphy_privid) | |
1541 | return 0; | |
1542 | ||
1543 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
1544 | ||
2f5265e6 | 1545 | memcpy(sdata->name, dev->name, IFNAMSIZ); |
47846c9b JB |
1546 | |
1547 | ieee80211_debugfs_rename_netdev(sdata); | |
1548 | return 0; | |
1549 | } | |
1550 | ||
1551 | static struct notifier_block mac80211_netdev_notifier = { | |
1552 | .notifier_call = netdev_notify, | |
1553 | }; | |
1554 | ||
1555 | int ieee80211_iface_init(void) | |
1556 | { | |
1557 | return register_netdevice_notifier(&mac80211_netdev_notifier); | |
1558 | } | |
1559 | ||
1560 | void ieee80211_iface_exit(void) | |
1561 | { | |
1562 | unregister_netdevice_notifier(&mac80211_netdev_notifier); | |
1563 | } |