Commit | Line | Data |
---|---|---|
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 | ||
60 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG | |
61 | printk(KERN_DEBUG "%s: setting MTU %d\n", dev->name, new_mtu); | |
62 | #endif /* CONFIG_MAC80211_VERBOSE_DEBUG */ | |
63 | dev->mtu = new_mtu; | |
64 | return 0; | |
65 | } | |
66 | ||
47846c9b JB |
67 | static int ieee80211_change_mac(struct net_device *dev, void *addr) |
68 | { | |
69 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
fc5f7577 | 70 | struct sockaddr *sa = addr; |
47846c9b JB |
71 | int ret; |
72 | ||
9607e6b6 | 73 | if (ieee80211_sdata_running(sdata)) |
47846c9b JB |
74 | return -EBUSY; |
75 | ||
fc5f7577 | 76 | ret = eth_mac_addr(dev, sa); |
47846c9b JB |
77 | |
78 | if (ret == 0) | |
fc5f7577 | 79 | memcpy(sdata->vif.addr, sa->sa_data, ETH_ALEN); |
47846c9b JB |
80 | |
81 | return ret; | |
82 | } | |
83 | ||
0d143fe1 JB |
84 | static inline int identical_mac_addr_allowed(int type1, int type2) |
85 | { | |
86 | return type1 == NL80211_IFTYPE_MONITOR || | |
87 | type2 == NL80211_IFTYPE_MONITOR || | |
88 | (type1 == NL80211_IFTYPE_AP && type2 == NL80211_IFTYPE_WDS) || | |
89 | (type1 == NL80211_IFTYPE_WDS && | |
90 | (type2 == NL80211_IFTYPE_WDS || | |
91 | type2 == NL80211_IFTYPE_AP)) || | |
92 | (type1 == NL80211_IFTYPE_AP && type2 == NL80211_IFTYPE_AP_VLAN) || | |
93 | (type1 == NL80211_IFTYPE_AP_VLAN && | |
94 | (type2 == NL80211_IFTYPE_AP || | |
95 | type2 == NL80211_IFTYPE_AP_VLAN)); | |
96 | } | |
97 | ||
87490f6d JB |
98 | static int ieee80211_check_concurrent_iface(struct ieee80211_sub_if_data *sdata, |
99 | enum nl80211_iftype iftype) | |
0d143fe1 | 100 | { |
b4a4bf5d | 101 | struct ieee80211_local *local = sdata->local; |
87490f6d JB |
102 | struct ieee80211_sub_if_data *nsdata; |
103 | struct net_device *dev = sdata->dev; | |
0d143fe1 | 104 | |
87490f6d | 105 | ASSERT_RTNL(); |
0d143fe1 JB |
106 | |
107 | /* we hold the RTNL here so can safely walk the list */ | |
108 | list_for_each_entry(nsdata, &local->interfaces, list) { | |
109 | struct net_device *ndev = nsdata->dev; | |
110 | ||
9607e6b6 | 111 | if (ndev != dev && ieee80211_sdata_running(nsdata)) { |
0d143fe1 JB |
112 | /* |
113 | * Allow only a single IBSS interface to be up at any | |
114 | * time. This is restricted because beacon distribution | |
115 | * cannot work properly if both are in the same IBSS. | |
116 | * | |
117 | * To remove this restriction we'd have to disallow them | |
118 | * from setting the same SSID on different IBSS interfaces | |
119 | * belonging to the same hardware. Then, however, we're | |
120 | * faced with having to adopt two different TSF timers... | |
121 | */ | |
87490f6d | 122 | if (iftype == NL80211_IFTYPE_ADHOC && |
0d143fe1 JB |
123 | nsdata->vif.type == NL80211_IFTYPE_ADHOC) |
124 | return -EBUSY; | |
125 | ||
126 | /* | |
127 | * The remaining checks are only performed for interfaces | |
128 | * with the same MAC address. | |
129 | */ | |
130 | if (compare_ether_addr(dev->dev_addr, ndev->dev_addr)) | |
131 | continue; | |
132 | ||
133 | /* | |
134 | * check whether it may have the same address | |
135 | */ | |
87490f6d | 136 | if (!identical_mac_addr_allowed(iftype, |
0d143fe1 JB |
137 | nsdata->vif.type)) |
138 | return -ENOTUNIQ; | |
139 | ||
140 | /* | |
141 | * can only add VLANs to enabled APs | |
142 | */ | |
87490f6d | 143 | if (iftype == NL80211_IFTYPE_AP_VLAN && |
0d143fe1 JB |
144 | nsdata->vif.type == NL80211_IFTYPE_AP) |
145 | sdata->bss = &nsdata->u.ap; | |
146 | } | |
147 | } | |
148 | ||
87490f6d JB |
149 | return 0; |
150 | } | |
151 | ||
3a25a8c8 JB |
152 | static int ieee80211_check_queues(struct ieee80211_sub_if_data *sdata) |
153 | { | |
154 | int n_queues = sdata->local->hw.queues; | |
155 | int i; | |
156 | ||
157 | for (i = 0; i < IEEE80211_NUM_ACS; i++) { | |
158 | if (WARN_ON_ONCE(sdata->vif.hw_queue[i] == | |
159 | IEEE80211_INVAL_HW_QUEUE)) | |
160 | return -EINVAL; | |
161 | if (WARN_ON_ONCE(sdata->vif.hw_queue[i] >= | |
162 | n_queues)) | |
163 | return -EINVAL; | |
164 | } | |
165 | ||
bb3e10fb LC |
166 | if ((sdata->vif.type != NL80211_IFTYPE_AP) || |
167 | !(sdata->local->hw.flags & IEEE80211_HW_QUEUE_CONTROL)) { | |
3a25a8c8 JB |
168 | sdata->vif.cab_queue = IEEE80211_INVAL_HW_QUEUE; |
169 | return 0; | |
170 | } | |
171 | ||
172 | if (WARN_ON_ONCE(sdata->vif.cab_queue == IEEE80211_INVAL_HW_QUEUE)) | |
173 | return -EINVAL; | |
174 | ||
175 | if (WARN_ON_ONCE(sdata->vif.cab_queue >= n_queues)) | |
176 | return -EINVAL; | |
177 | ||
178 | return 0; | |
179 | } | |
180 | ||
85416a4f CL |
181 | void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata, |
182 | const int offset) | |
183 | { | |
184 | struct ieee80211_local *local = sdata->local; | |
185 | u32 flags = sdata->u.mntr_flags; | |
186 | ||
187 | #define ADJUST(_f, _s) do { \ | |
188 | if (flags & MONITOR_FLAG_##_f) \ | |
189 | local->fif_##_s += offset; \ | |
190 | } while (0) | |
191 | ||
192 | ADJUST(FCSFAIL, fcsfail); | |
193 | ADJUST(PLCPFAIL, plcpfail); | |
194 | ADJUST(CONTROL, control); | |
195 | ADJUST(CONTROL, pspoll); | |
196 | ADJUST(OTHER_BSS, other_bss); | |
197 | ||
198 | #undef ADJUST | |
199 | } | |
200 | ||
3a25a8c8 JB |
201 | static void ieee80211_set_default_queues(struct ieee80211_sub_if_data *sdata) |
202 | { | |
203 | struct ieee80211_local *local = sdata->local; | |
204 | int i; | |
205 | ||
206 | for (i = 0; i < IEEE80211_NUM_ACS; i++) { | |
207 | if (local->hw.flags & IEEE80211_HW_QUEUE_CONTROL) | |
208 | sdata->vif.hw_queue[i] = IEEE80211_INVAL_HW_QUEUE; | |
a9d3c05c | 209 | else if (local->hw.queues >= IEEE80211_NUM_ACS) |
3a25a8c8 | 210 | sdata->vif.hw_queue[i] = i; |
a9d3c05c JB |
211 | else |
212 | sdata->vif.hw_queue[i] = 0; | |
3a25a8c8 JB |
213 | } |
214 | sdata->vif.cab_queue = IEEE80211_INVAL_HW_QUEUE; | |
215 | } | |
216 | ||
4b6f1dd6 JB |
217 | static int ieee80211_add_virtual_monitor(struct ieee80211_local *local) |
218 | { | |
219 | struct ieee80211_sub_if_data *sdata; | |
220 | int ret; | |
221 | ||
222 | if (!(local->hw.flags & IEEE80211_HW_WANT_MONITOR_VIF)) | |
223 | return 0; | |
224 | ||
225 | if (local->monitor_sdata) | |
226 | return 0; | |
227 | ||
228 | sdata = kzalloc(sizeof(*sdata) + local->hw.vif_data_size, GFP_KERNEL); | |
229 | if (!sdata) | |
230 | return -ENOMEM; | |
231 | ||
232 | /* set up data */ | |
233 | sdata->local = local; | |
234 | sdata->vif.type = NL80211_IFTYPE_MONITOR; | |
235 | snprintf(sdata->name, IFNAMSIZ, "%s-monitor", | |
236 | wiphy_name(local->hw.wiphy)); | |
237 | ||
3a25a8c8 JB |
238 | ieee80211_set_default_queues(sdata); |
239 | ||
4b6f1dd6 JB |
240 | ret = drv_add_interface(local, sdata); |
241 | if (WARN_ON(ret)) { | |
242 | /* ok .. stupid driver, it asked for this! */ | |
243 | kfree(sdata); | |
244 | return ret; | |
245 | } | |
246 | ||
3a25a8c8 JB |
247 | ret = ieee80211_check_queues(sdata); |
248 | if (ret) { | |
249 | kfree(sdata); | |
250 | return ret; | |
251 | } | |
252 | ||
4b6f1dd6 JB |
253 | rcu_assign_pointer(local->monitor_sdata, sdata); |
254 | ||
255 | return 0; | |
256 | } | |
257 | ||
258 | static void ieee80211_del_virtual_monitor(struct ieee80211_local *local) | |
259 | { | |
260 | struct ieee80211_sub_if_data *sdata; | |
261 | ||
262 | if (!(local->hw.flags & IEEE80211_HW_WANT_MONITOR_VIF)) | |
263 | return; | |
264 | ||
265 | sdata = rtnl_dereference(local->monitor_sdata); | |
266 | ||
267 | if (!sdata) | |
268 | return; | |
269 | ||
270 | rcu_assign_pointer(local->monitor_sdata, NULL); | |
271 | synchronize_net(); | |
272 | ||
273 | drv_remove_interface(local, sdata); | |
274 | ||
275 | kfree(sdata); | |
276 | } | |
277 | ||
34d4bc4d JB |
278 | /* |
279 | * NOTE: Be very careful when changing this function, it must NOT return | |
280 | * an error on interface type changes that have been pre-checked, so most | |
281 | * checks should be in ieee80211_check_concurrent_iface. | |
282 | */ | |
283 | static int ieee80211_do_open(struct net_device *dev, bool coming_up) | |
87490f6d JB |
284 | { |
285 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
286 | struct ieee80211_local *local = sdata->local; | |
287 | struct sta_info *sta; | |
288 | u32 changed = 0; | |
289 | int res; | |
290 | u32 hw_reconf_flags = 0; | |
291 | ||
0d143fe1 JB |
292 | switch (sdata->vif.type) { |
293 | case NL80211_IFTYPE_WDS: | |
294 | if (!is_valid_ether_addr(sdata->u.wds.remote_addr)) | |
295 | return -ENOLINK; | |
296 | break; | |
665c93a9 JB |
297 | case NL80211_IFTYPE_AP_VLAN: { |
298 | struct ieee80211_sub_if_data *master; | |
299 | ||
0d143fe1 JB |
300 | if (!sdata->bss) |
301 | return -ENOLINK; | |
665c93a9 | 302 | |
0d143fe1 | 303 | list_add(&sdata->u.vlan.list, &sdata->bss->vlans); |
665c93a9 JB |
304 | |
305 | master = container_of(sdata->bss, | |
306 | struct ieee80211_sub_if_data, u.ap); | |
307 | sdata->control_port_protocol = | |
308 | master->control_port_protocol; | |
309 | sdata->control_port_no_encrypt = | |
310 | master->control_port_no_encrypt; | |
0d143fe1 | 311 | break; |
665c93a9 | 312 | } |
0d143fe1 JB |
313 | case NL80211_IFTYPE_AP: |
314 | sdata->bss = &sdata->u.ap; | |
315 | break; | |
316 | case NL80211_IFTYPE_MESH_POINT: | |
0d143fe1 JB |
317 | case NL80211_IFTYPE_STATION: |
318 | case NL80211_IFTYPE_MONITOR: | |
319 | case NL80211_IFTYPE_ADHOC: | |
320 | /* no special treatment */ | |
321 | break; | |
322 | case NL80211_IFTYPE_UNSPECIFIED: | |
2e161f78 | 323 | case NUM_NL80211_IFTYPES: |
2ca27bcf JB |
324 | case NL80211_IFTYPE_P2P_CLIENT: |
325 | case NL80211_IFTYPE_P2P_GO: | |
0d143fe1 JB |
326 | /* cannot happen */ |
327 | WARN_ON(1); | |
328 | break; | |
329 | } | |
330 | ||
331 | if (local->open_count == 0) { | |
24487981 | 332 | res = drv_start(local); |
0d143fe1 JB |
333 | if (res) |
334 | goto err_del_bss; | |
4e6cbfd0 JL |
335 | if (local->ops->napi_poll) |
336 | napi_enable(&local->napi); | |
e8975581 JB |
337 | /* we're brought up, everything changes */ |
338 | hw_reconf_flags = ~0; | |
1f87f7d3 | 339 | ieee80211_led_radio(local, true); |
67408c8c JB |
340 | ieee80211_mod_tpt_led_trig(local, |
341 | IEEE80211_TPT_LEDTRIG_FL_RADIO, 0); | |
0d143fe1 JB |
342 | } |
343 | ||
344 | /* | |
bf533e0b JB |
345 | * Copy the hopefully now-present MAC address to |
346 | * this interface, if it has the special null one. | |
0d143fe1 | 347 | */ |
bf533e0b JB |
348 | if (is_zero_ether_addr(dev->dev_addr)) { |
349 | memcpy(dev->dev_addr, | |
350 | local->hw.wiphy->perm_addr, | |
351 | ETH_ALEN); | |
352 | memcpy(dev->perm_addr, dev->dev_addr, ETH_ALEN); | |
353 | ||
354 | if (!is_valid_ether_addr(dev->dev_addr)) { | |
4d6c36fa JB |
355 | res = -EADDRNOTAVAIL; |
356 | goto err_stop; | |
0adc23f5 | 357 | } |
0d143fe1 JB |
358 | } |
359 | ||
0d143fe1 JB |
360 | switch (sdata->vif.type) { |
361 | case NL80211_IFTYPE_AP_VLAN: | |
3edaf3e6 JB |
362 | /* no need to tell driver, but set carrier */ |
363 | if (rtnl_dereference(sdata->bss->beacon)) | |
364 | netif_carrier_on(dev); | |
365 | else | |
366 | netif_carrier_off(dev); | |
0d143fe1 JB |
367 | break; |
368 | case NL80211_IFTYPE_MONITOR: | |
369 | if (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES) { | |
370 | local->cooked_mntrs++; | |
371 | break; | |
372 | } | |
373 | ||
4b6f1dd6 JB |
374 | if (local->monitors == 0 && local->open_count == 0) { |
375 | res = ieee80211_add_virtual_monitor(local); | |
376 | if (res) | |
377 | goto err_stop; | |
378 | } | |
379 | ||
0d143fe1 JB |
380 | /* must be before the call to ieee80211_configure_filter */ |
381 | local->monitors++; | |
e8975581 | 382 | if (local->monitors == 1) { |
0869aea0 JB |
383 | local->hw.conf.flags |= IEEE80211_CONF_MONITOR; |
384 | hw_reconf_flags |= IEEE80211_CONF_CHANGE_MONITOR; | |
e8975581 | 385 | } |
0d143fe1 | 386 | |
85416a4f | 387 | ieee80211_adjust_monitor_flags(sdata, 1); |
0d143fe1 | 388 | ieee80211_configure_filter(local); |
53e9b1de DG |
389 | |
390 | netif_carrier_on(dev); | |
0d143fe1 | 391 | break; |
0d143fe1 | 392 | default: |
34d4bc4d | 393 | if (coming_up) { |
4b6f1dd6 JB |
394 | ieee80211_del_virtual_monitor(local); |
395 | ||
7b7eab6f | 396 | res = drv_add_interface(local, sdata); |
34d4bc4d JB |
397 | if (res) |
398 | goto err_stop; | |
3a25a8c8 JB |
399 | res = ieee80211_check_queues(sdata); |
400 | if (res) | |
401 | goto err_del_interface; | |
34d4bc4d | 402 | } |
0d143fe1 | 403 | |
29cbe68c | 404 | if (sdata->vif.type == NL80211_IFTYPE_AP) { |
e3b90ca2 | 405 | local->fif_pspoll++; |
7be5086d | 406 | local->fif_probe_req++; |
e3b90ca2 | 407 | |
e3b90ca2 | 408 | ieee80211_configure_filter(local); |
7be5086d JB |
409 | } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) { |
410 | local->fif_probe_req++; | |
a3c9aa51 | 411 | } |
e3b90ca2 | 412 | |
0d143fe1 JB |
413 | changed |= ieee80211_reset_erp_info(sdata); |
414 | ieee80211_bss_info_change_notify(sdata, changed); | |
0d143fe1 | 415 | |
86a2ea41 | 416 | if (sdata->vif.type == NL80211_IFTYPE_STATION || |
3edaf3e6 JB |
417 | sdata->vif.type == NL80211_IFTYPE_ADHOC || |
418 | sdata->vif.type == NL80211_IFTYPE_AP) | |
0d143fe1 JB |
419 | netif_carrier_off(dev); |
420 | else | |
421 | netif_carrier_on(dev); | |
59034591 EP |
422 | |
423 | /* | |
424 | * set default queue parameters so drivers don't | |
425 | * need to initialise the hardware if the hardware | |
426 | * doesn't start up with sane defaults | |
427 | */ | |
3abead59 | 428 | ieee80211_set_wmm_default(sdata, true); |
0d143fe1 JB |
429 | } |
430 | ||
2d2080c3 JB |
431 | set_bit(SDATA_STATE_RUNNING, &sdata->state); |
432 | ||
0d143fe1 JB |
433 | if (sdata->vif.type == NL80211_IFTYPE_WDS) { |
434 | /* Create STA entry for the WDS peer */ | |
435 | sta = sta_info_alloc(sdata, sdata->u.wds.remote_addr, | |
436 | GFP_KERNEL); | |
437 | if (!sta) { | |
438 | res = -ENOMEM; | |
439 | goto err_del_interface; | |
440 | } | |
441 | ||
83d5cc01 JB |
442 | sta_info_pre_move_state(sta, IEEE80211_STA_AUTH); |
443 | sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC); | |
444 | sta_info_pre_move_state(sta, IEEE80211_STA_AUTHORIZED); | |
0d143fe1 JB |
445 | |
446 | res = sta_info_insert(sta); | |
447 | if (res) { | |
448 | /* STA has been freed */ | |
449 | goto err_del_interface; | |
450 | } | |
1be7fe8d BJ |
451 | |
452 | rate_control_rate_init(sta); | |
0d143fe1 JB |
453 | } |
454 | ||
0d143fe1 JB |
455 | /* |
456 | * set_multicast_list will be invoked by the networking core | |
457 | * which will check whether any increments here were done in | |
458 | * error and sync them down to the hardware as filter flags. | |
459 | */ | |
460 | if (sdata->flags & IEEE80211_SDATA_ALLMULTI) | |
461 | atomic_inc(&local->iff_allmultis); | |
462 | ||
463 | if (sdata->flags & IEEE80211_SDATA_PROMISC) | |
464 | atomic_inc(&local->iff_promiscs); | |
465 | ||
7da7cc1d | 466 | mutex_lock(&local->mtx); |
5cff20e6 | 467 | hw_reconf_flags |= __ieee80211_recalc_idle(local); |
7da7cc1d | 468 | mutex_unlock(&local->mtx); |
5cff20e6 | 469 | |
34d4bc4d JB |
470 | if (coming_up) |
471 | local->open_count++; | |
472 | ||
59034591 | 473 | if (hw_reconf_flags) |
e8975581 | 474 | ieee80211_hw_config(local, hw_reconf_flags); |
0d143fe1 | 475 | |
10f644a4 | 476 | ieee80211_recalc_ps(local, -1); |
965bedad | 477 | |
8a5b33f5 | 478 | netif_tx_start_all_queues(dev); |
0d143fe1 JB |
479 | |
480 | return 0; | |
481 | err_del_interface: | |
7b7eab6f | 482 | drv_remove_interface(local, sdata); |
0d143fe1 | 483 | err_stop: |
24487981 JB |
484 | if (!local->open_count) |
485 | drv_stop(local); | |
0d143fe1 JB |
486 | err_del_bss: |
487 | sdata->bss = NULL; | |
488 | if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) | |
489 | list_del(&sdata->u.vlan.list); | |
4d6c36fa | 490 | /* might already be clear but that doesn't matter */ |
2d2080c3 | 491 | clear_bit(SDATA_STATE_RUNNING, &sdata->state); |
0d143fe1 JB |
492 | return res; |
493 | } | |
494 | ||
34d4bc4d | 495 | static int ieee80211_open(struct net_device *dev) |
0d143fe1 JB |
496 | { |
497 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
34d4bc4d JB |
498 | int err; |
499 | ||
500 | /* fail early if user set an invalid address */ | |
2fcf2824 | 501 | if (!is_valid_ether_addr(dev->dev_addr)) |
34d4bc4d JB |
502 | return -EADDRNOTAVAIL; |
503 | ||
504 | err = ieee80211_check_concurrent_iface(sdata, sdata->vif.type); | |
505 | if (err) | |
506 | return err; | |
507 | ||
508 | return ieee80211_do_open(dev, true); | |
509 | } | |
510 | ||
511 | static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata, | |
512 | bool going_down) | |
513 | { | |
0d143fe1 | 514 | struct ieee80211_local *local = sdata->local; |
5061b0c2 JB |
515 | unsigned long flags; |
516 | struct sk_buff *skb, *tmp; | |
e8975581 | 517 | u32 hw_reconf_flags = 0; |
5061b0c2 | 518 | int i; |
2cf22b89 | 519 | enum nl80211_channel_type orig_ct; |
0d143fe1 | 520 | |
c29acf20 RM |
521 | clear_bit(SDATA_STATE_RUNNING, &sdata->state); |
522 | ||
352ffad6 BC |
523 | if (local->scan_sdata == sdata) |
524 | ieee80211_scan_cancel(local); | |
525 | ||
0d143fe1 JB |
526 | /* |
527 | * Stop TX on this interface first. | |
528 | */ | |
34d4bc4d | 529 | netif_tx_stop_all_queues(sdata->dev); |
0d143fe1 | 530 | |
af6b6374 JB |
531 | /* |
532 | * Purge work for this interface. | |
533 | */ | |
534 | ieee80211_work_purge(sdata); | |
535 | ||
0d143fe1 JB |
536 | /* |
537 | * Remove all stations associated with this interface. | |
538 | * | |
539 | * This must be done before calling ops->remove_interface() | |
540 | * because otherwise we can later invoke ops->sta_notify() | |
541 | * whenever the STAs are removed, and that invalidates driver | |
542 | * assumptions about always getting a vif pointer that is valid | |
543 | * (because if we remove a STA after ops->remove_interface() | |
544 | * the driver will have removed the vif info already!) | |
545 | * | |
b9dcf712 JB |
546 | * This is relevant only in AP, WDS and mesh modes, since in |
547 | * all other modes we've already removed all stations when | |
548 | * disconnecting etc. | |
0d143fe1 JB |
549 | */ |
550 | sta_info_flush(local, sdata); | |
551 | ||
552 | /* | |
553 | * Don't count this interface for promisc/allmulti while it | |
554 | * is down. dev_mc_unsync() will invoke set_multicast_list | |
555 | * on the master interface which will sync these down to the | |
556 | * hardware as filter flags. | |
557 | */ | |
558 | if (sdata->flags & IEEE80211_SDATA_ALLMULTI) | |
559 | atomic_dec(&local->iff_allmultis); | |
560 | ||
561 | if (sdata->flags & IEEE80211_SDATA_PROMISC) | |
562 | atomic_dec(&local->iff_promiscs); | |
563 | ||
7be5086d | 564 | if (sdata->vif.type == NL80211_IFTYPE_AP) { |
e3b90ca2 | 565 | local->fif_pspoll--; |
7be5086d JB |
566 | local->fif_probe_req--; |
567 | } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) { | |
568 | local->fif_probe_req--; | |
569 | } | |
e3b90ca2 | 570 | |
34d4bc4d | 571 | netif_addr_lock_bh(sdata->dev); |
3b8d81e0 | 572 | spin_lock_bh(&local->filter_lock); |
34d4bc4d JB |
573 | __hw_addr_unsync(&local->mc_list, &sdata->dev->mc, |
574 | sdata->dev->addr_len); | |
3b8d81e0 | 575 | spin_unlock_bh(&local->filter_lock); |
34d4bc4d | 576 | netif_addr_unlock_bh(sdata->dev); |
3b8d81e0 | 577 | |
3ac64bee JB |
578 | ieee80211_configure_filter(local); |
579 | ||
7cbf0ba5 VN |
580 | del_timer_sync(&local->dynamic_ps_timer); |
581 | cancel_work_sync(&local->dynamic_ps_enable_work); | |
0d143fe1 JB |
582 | |
583 | /* APs need special treatment */ | |
584 | if (sdata->vif.type == NL80211_IFTYPE_AP) { | |
57c9fff3 | 585 | struct ieee80211_sub_if_data *vlan, *tmpsdata; |
40b275b6 JB |
586 | struct beacon_data *old_beacon = |
587 | rtnl_dereference(sdata->u.ap.beacon); | |
02945821 AN |
588 | struct sk_buff *old_probe_resp = |
589 | rtnl_dereference(sdata->u.ap.probe_resp); | |
0d143fe1 | 590 | |
b9dcf712 JB |
591 | /* sdata_running will return false, so this will disable */ |
592 | ieee80211_bss_info_change_notify(sdata, | |
593 | BSS_CHANGED_BEACON_ENABLED); | |
594 | ||
02945821 | 595 | /* remove beacon and probe response */ |
a9b3cd7f | 596 | RCU_INIT_POINTER(sdata->u.ap.beacon, NULL); |
02945821 | 597 | RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL); |
0d143fe1 JB |
598 | synchronize_rcu(); |
599 | kfree(old_beacon); | |
5e2e05de | 600 | kfree_skb(old_probe_resp); |
0d143fe1 JB |
601 | |
602 | /* down all dependent devices, that is VLANs */ | |
57c9fff3 | 603 | list_for_each_entry_safe(vlan, tmpsdata, &sdata->u.ap.vlans, |
0d143fe1 JB |
604 | u.vlan.list) |
605 | dev_close(vlan->dev); | |
606 | WARN_ON(!list_empty(&sdata->u.ap.vlans)); | |
6f2d9335 JB |
607 | |
608 | /* free all potentially still buffered bcast frames */ | |
609 | local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps_bc_buf); | |
610 | skb_queue_purge(&sdata->u.ap.ps_bc_buf); | |
afa762f6 EP |
611 | } else if (sdata->vif.type == NL80211_IFTYPE_STATION) { |
612 | ieee80211_mgd_stop(sdata); | |
0d143fe1 JB |
613 | } |
614 | ||
34d4bc4d JB |
615 | if (going_down) |
616 | local->open_count--; | |
0d143fe1 JB |
617 | |
618 | switch (sdata->vif.type) { | |
619 | case NL80211_IFTYPE_AP_VLAN: | |
620 | list_del(&sdata->u.vlan.list); | |
621 | /* no need to tell driver */ | |
622 | break; | |
623 | case NL80211_IFTYPE_MONITOR: | |
624 | if (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES) { | |
625 | local->cooked_mntrs--; | |
626 | break; | |
627 | } | |
628 | ||
629 | local->monitors--; | |
e8975581 | 630 | if (local->monitors == 0) { |
0869aea0 JB |
631 | local->hw.conf.flags &= ~IEEE80211_CONF_MONITOR; |
632 | hw_reconf_flags |= IEEE80211_CONF_CHANGE_MONITOR; | |
4b6f1dd6 | 633 | ieee80211_del_virtual_monitor(local); |
e8975581 | 634 | } |
0d143fe1 | 635 | |
85416a4f | 636 | ieee80211_adjust_monitor_flags(sdata, -1); |
0d143fe1 | 637 | ieee80211_configure_filter(local); |
0d143fe1 | 638 | break; |
0d143fe1 | 639 | default: |
c1475ca9 | 640 | flush_work(&sdata->work); |
35f20c14 JB |
641 | /* |
642 | * When we get here, the interface is marked down. | |
643 | * Call synchronize_rcu() to wait for the RX path | |
644 | * should it be using the interface and enqueuing | |
645 | * frames at this very time on another CPU. | |
646 | */ | |
647 | synchronize_rcu(); | |
648 | skb_queue_purge(&sdata->skb_queue); | |
649 | ||
97af7432 | 650 | /* |
b9dcf712 JB |
651 | * Disable beaconing here for mesh only, AP and IBSS |
652 | * are already taken care of. | |
97af7432 | 653 | */ |
b9dcf712 | 654 | if (sdata->vif.type == NL80211_IFTYPE_MESH_POINT) |
97af7432 BC |
655 | ieee80211_bss_info_change_notify(sdata, |
656 | BSS_CHANGED_BEACON_ENABLED); | |
97af7432 | 657 | |
b9dcf712 JB |
658 | /* |
659 | * Free all remaining keys, there shouldn't be any, | |
660 | * except maybe group keys in AP more or WDS? | |
661 | */ | |
ad0e2b5a | 662 | ieee80211_free_keys(sdata); |
b9dcf712 | 663 | |
34d4bc4d | 664 | if (going_down) |
7b7eab6f | 665 | drv_remove_interface(local, sdata); |
0d143fe1 JB |
666 | } |
667 | ||
668 | sdata->bss = NULL; | |
669 | ||
7da7cc1d | 670 | mutex_lock(&local->mtx); |
5cff20e6 | 671 | hw_reconf_flags |= __ieee80211_recalc_idle(local); |
7da7cc1d | 672 | mutex_unlock(&local->mtx); |
5cff20e6 JB |
673 | |
674 | ieee80211_recalc_ps(local, -1); | |
675 | ||
0d143fe1 | 676 | if (local->open_count == 0) { |
4e6cbfd0 JL |
677 | if (local->ops->napi_poll) |
678 | napi_disable(&local->napi); | |
ea77f12f | 679 | ieee80211_clear_tx_pending(local); |
84f6a01c | 680 | ieee80211_stop_device(local); |
0d143fe1 | 681 | |
e8975581 JB |
682 | /* no reconfiguring after stop! */ |
683 | hw_reconf_flags = 0; | |
0d143fe1 JB |
684 | } |
685 | ||
2cf22b89 BG |
686 | /* Re-calculate channel-type, in case there are multiple vifs |
687 | * on different channel types. | |
688 | */ | |
689 | orig_ct = local->_oper_channel_type; | |
690 | ieee80211_set_channel_type(local, NULL, NL80211_CHAN_NO_HT); | |
691 | ||
e8975581 | 692 | /* do after stop to avoid reconfiguring when we stop anyway */ |
2cf22b89 | 693 | if (hw_reconf_flags || (orig_ct != local->_oper_channel_type)) |
e8975581 JB |
694 | ieee80211_hw_config(local, hw_reconf_flags); |
695 | ||
5061b0c2 JB |
696 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
697 | for (i = 0; i < IEEE80211_MAX_QUEUES; i++) { | |
698 | skb_queue_walk_safe(&local->pending[i], skb, tmp) { | |
699 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); | |
700 | if (info->control.vif == &sdata->vif) { | |
701 | __skb_unlink(skb, &local->pending[i]); | |
702 | dev_kfree_skb_irq(skb); | |
703 | } | |
704 | } | |
705 | } | |
706 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
4b6f1dd6 JB |
707 | |
708 | if (local->monitors == local->open_count && local->monitors > 0) | |
709 | ieee80211_add_virtual_monitor(local); | |
34d4bc4d JB |
710 | } |
711 | ||
712 | static int ieee80211_stop(struct net_device *dev) | |
713 | { | |
714 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
715 | ||
716 | ieee80211_do_stop(sdata, true); | |
5061b0c2 | 717 | |
0d143fe1 JB |
718 | return 0; |
719 | } | |
720 | ||
721 | static void ieee80211_set_multicast_list(struct net_device *dev) | |
722 | { | |
0d143fe1 | 723 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
b4a4bf5d | 724 | struct ieee80211_local *local = sdata->local; |
0d143fe1 JB |
725 | int allmulti, promisc, sdata_allmulti, sdata_promisc; |
726 | ||
727 | allmulti = !!(dev->flags & IFF_ALLMULTI); | |
728 | promisc = !!(dev->flags & IFF_PROMISC); | |
729 | sdata_allmulti = !!(sdata->flags & IEEE80211_SDATA_ALLMULTI); | |
730 | sdata_promisc = !!(sdata->flags & IEEE80211_SDATA_PROMISC); | |
731 | ||
732 | if (allmulti != sdata_allmulti) { | |
733 | if (dev->flags & IFF_ALLMULTI) | |
734 | atomic_inc(&local->iff_allmultis); | |
735 | else | |
736 | atomic_dec(&local->iff_allmultis); | |
737 | sdata->flags ^= IEEE80211_SDATA_ALLMULTI; | |
738 | } | |
739 | ||
740 | if (promisc != sdata_promisc) { | |
741 | if (dev->flags & IFF_PROMISC) | |
742 | atomic_inc(&local->iff_promiscs); | |
743 | else | |
744 | atomic_dec(&local->iff_promiscs); | |
745 | sdata->flags ^= IEEE80211_SDATA_PROMISC; | |
746 | } | |
3b8d81e0 | 747 | spin_lock_bh(&local->filter_lock); |
22bedad3 | 748 | __hw_addr_sync(&local->mc_list, &dev->mc, dev->addr_len); |
3b8d81e0 | 749 | spin_unlock_bh(&local->filter_lock); |
3ac64bee | 750 | ieee80211_queue_work(&local->hw, &local->reconfig_filter); |
0d143fe1 JB |
751 | } |
752 | ||
75636525 JB |
753 | /* |
754 | * Called when the netdev is removed or, by the code below, before | |
755 | * the interface type changes. | |
756 | */ | |
757 | static void ieee80211_teardown_sdata(struct net_device *dev) | |
f0706e82 | 758 | { |
75636525 JB |
759 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
760 | struct ieee80211_local *local = sdata->local; | |
75636525 | 761 | int flushed; |
f0706e82 JB |
762 | int i; |
763 | ||
75636525 JB |
764 | /* free extra data */ |
765 | ieee80211_free_keys(sdata); | |
766 | ||
aee14ceb JM |
767 | ieee80211_debugfs_remove_netdev(sdata); |
768 | ||
f0706e82 | 769 | for (i = 0; i < IEEE80211_FRAGMENT_MAX; i++) |
75636525 JB |
770 | __skb_queue_purge(&sdata->fragments[i].skb_list); |
771 | sdata->fragment_next = 0; | |
11a843b7 | 772 | |
b9dcf712 JB |
773 | if (ieee80211_vif_is_mesh(&sdata->vif)) |
774 | mesh_rmc_free(sdata); | |
75636525 JB |
775 | |
776 | flushed = sta_info_flush(local, sdata); | |
777 | WARN_ON(flushed); | |
f0706e82 JB |
778 | } |
779 | ||
cf0277e7 JB |
780 | static u16 ieee80211_netdev_select_queue(struct net_device *dev, |
781 | struct sk_buff *skb) | |
782 | { | |
783 | return ieee80211_select_queue(IEEE80211_DEV_TO_SUB_IF(dev), skb); | |
784 | } | |
785 | ||
587e729e JB |
786 | static const struct net_device_ops ieee80211_dataif_ops = { |
787 | .ndo_open = ieee80211_open, | |
788 | .ndo_stop = ieee80211_stop, | |
789 | .ndo_uninit = ieee80211_teardown_sdata, | |
790 | .ndo_start_xmit = ieee80211_subif_start_xmit, | |
afc4b13d | 791 | .ndo_set_rx_mode = ieee80211_set_multicast_list, |
587e729e | 792 | .ndo_change_mtu = ieee80211_change_mtu, |
47846c9b | 793 | .ndo_set_mac_address = ieee80211_change_mac, |
cf0277e7 | 794 | .ndo_select_queue = ieee80211_netdev_select_queue, |
587e729e JB |
795 | }; |
796 | ||
cf0277e7 JB |
797 | static u16 ieee80211_monitor_select_queue(struct net_device *dev, |
798 | struct sk_buff *skb) | |
799 | { | |
800 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
801 | struct ieee80211_local *local = sdata->local; | |
802 | struct ieee80211_hdr *hdr; | |
803 | struct ieee80211_radiotap_header *rtap = (void *)skb->data; | |
804 | ||
32c5057b | 805 | if (local->hw.queues < IEEE80211_NUM_ACS) |
cf0277e7 JB |
806 | return 0; |
807 | ||
808 | if (skb->len < 4 || | |
b49bb574 | 809 | skb->len < le16_to_cpu(rtap->it_len) + 2 /* frame control */) |
cf0277e7 JB |
810 | return 0; /* doesn't matter, frame will be dropped */ |
811 | ||
b49bb574 | 812 | hdr = (void *)((u8 *)skb->data + le16_to_cpu(rtap->it_len)); |
cf0277e7 | 813 | |
d3c1597b | 814 | return ieee80211_select_queue_80211(local, skb, hdr); |
cf0277e7 JB |
815 | } |
816 | ||
587e729e JB |
817 | static const struct net_device_ops ieee80211_monitorif_ops = { |
818 | .ndo_open = ieee80211_open, | |
819 | .ndo_stop = ieee80211_stop, | |
820 | .ndo_uninit = ieee80211_teardown_sdata, | |
821 | .ndo_start_xmit = ieee80211_monitor_start_xmit, | |
afc4b13d | 822 | .ndo_set_rx_mode = ieee80211_set_multicast_list, |
587e729e JB |
823 | .ndo_change_mtu = ieee80211_change_mtu, |
824 | .ndo_set_mac_address = eth_mac_addr, | |
cf0277e7 | 825 | .ndo_select_queue = ieee80211_monitor_select_queue, |
587e729e JB |
826 | }; |
827 | ||
828 | static void ieee80211_if_setup(struct net_device *dev) | |
829 | { | |
830 | ether_setup(dev); | |
550fd08c | 831 | dev->priv_flags &= ~IFF_TX_SKB_SHARING; |
587e729e | 832 | dev->netdev_ops = &ieee80211_dataif_ops; |
587e729e JB |
833 | dev->destructor = free_netdev; |
834 | } | |
835 | ||
1fa57d01 JB |
836 | static void ieee80211_iface_work(struct work_struct *work) |
837 | { | |
838 | struct ieee80211_sub_if_data *sdata = | |
839 | container_of(work, struct ieee80211_sub_if_data, work); | |
840 | struct ieee80211_local *local = sdata->local; | |
841 | struct sk_buff *skb; | |
344eec67 | 842 | struct sta_info *sta; |
c1475ca9 | 843 | struct ieee80211_ra_tid *ra_tid; |
1fa57d01 JB |
844 | |
845 | if (!ieee80211_sdata_running(sdata)) | |
846 | return; | |
847 | ||
848 | if (local->scanning) | |
849 | return; | |
850 | ||
851 | /* | |
852 | * ieee80211_queue_work() should have picked up most cases, | |
853 | * here we'll pick the rest. | |
854 | */ | |
855 | if (WARN(local->suspended, | |
856 | "interface work scheduled while going to suspend\n")) | |
857 | return; | |
858 | ||
859 | /* first process frames */ | |
860 | while ((skb = skb_dequeue(&sdata->skb_queue))) { | |
bed7ee6e JB |
861 | struct ieee80211_mgmt *mgmt = (void *)skb->data; |
862 | ||
c1475ca9 JB |
863 | if (skb->pkt_type == IEEE80211_SDATA_QUEUE_AGG_START) { |
864 | ra_tid = (void *)&skb->cb; | |
865 | ieee80211_start_tx_ba_cb(&sdata->vif, ra_tid->ra, | |
866 | ra_tid->tid); | |
867 | } else if (skb->pkt_type == IEEE80211_SDATA_QUEUE_AGG_STOP) { | |
868 | ra_tid = (void *)&skb->cb; | |
869 | ieee80211_stop_tx_ba_cb(&sdata->vif, ra_tid->ra, | |
870 | ra_tid->tid); | |
871 | } else if (ieee80211_is_action(mgmt->frame_control) && | |
872 | mgmt->u.action.category == WLAN_CATEGORY_BACK) { | |
bed7ee6e | 873 | int len = skb->len; |
bed7ee6e | 874 | |
a93e3644 | 875 | mutex_lock(&local->sta_mtx); |
875ae5f6 | 876 | sta = sta_info_get_bss(sdata, mgmt->sa); |
bed7ee6e JB |
877 | if (sta) { |
878 | switch (mgmt->u.action.u.addba_req.action_code) { | |
879 | case WLAN_ACTION_ADDBA_REQ: | |
880 | ieee80211_process_addba_request( | |
881 | local, sta, mgmt, len); | |
882 | break; | |
883 | case WLAN_ACTION_ADDBA_RESP: | |
884 | ieee80211_process_addba_resp(local, sta, | |
885 | mgmt, len); | |
886 | break; | |
887 | case WLAN_ACTION_DELBA: | |
888 | ieee80211_process_delba(sdata, sta, | |
889 | mgmt, len); | |
890 | break; | |
891 | default: | |
892 | WARN_ON(1); | |
893 | break; | |
894 | } | |
895 | } | |
a93e3644 | 896 | mutex_unlock(&local->sta_mtx); |
344eec67 JB |
897 | } else if (ieee80211_is_data_qos(mgmt->frame_control)) { |
898 | struct ieee80211_hdr *hdr = (void *)mgmt; | |
899 | /* | |
900 | * So the frame isn't mgmt, but frame_control | |
901 | * is at the right place anyway, of course, so | |
902 | * the if statement is correct. | |
903 | * | |
904 | * Warn if we have other data frame types here, | |
905 | * they must not get here. | |
906 | */ | |
907 | WARN_ON(hdr->frame_control & | |
908 | cpu_to_le16(IEEE80211_STYPE_NULLFUNC)); | |
909 | WARN_ON(!(hdr->seq_ctrl & | |
910 | cpu_to_le16(IEEE80211_SCTL_FRAG))); | |
911 | /* | |
912 | * This was a fragment of a frame, received while | |
913 | * a block-ack session was active. That cannot be | |
914 | * right, so terminate the session. | |
915 | */ | |
a93e3644 | 916 | mutex_lock(&local->sta_mtx); |
875ae5f6 | 917 | sta = sta_info_get_bss(sdata, mgmt->sa); |
344eec67 JB |
918 | if (sta) { |
919 | u16 tid = *ieee80211_get_qos_ctl(hdr) & | |
920 | IEEE80211_QOS_CTL_TID_MASK; | |
921 | ||
922 | __ieee80211_stop_rx_ba_session( | |
923 | sta, tid, WLAN_BACK_RECIPIENT, | |
53f73c09 JB |
924 | WLAN_REASON_QSTA_REQUIRE_SETUP, |
925 | true); | |
344eec67 | 926 | } |
a93e3644 | 927 | mutex_unlock(&local->sta_mtx); |
bed7ee6e | 928 | } else switch (sdata->vif.type) { |
1fa57d01 JB |
929 | case NL80211_IFTYPE_STATION: |
930 | ieee80211_sta_rx_queued_mgmt(sdata, skb); | |
931 | break; | |
932 | case NL80211_IFTYPE_ADHOC: | |
933 | ieee80211_ibss_rx_queued_mgmt(sdata, skb); | |
934 | break; | |
935 | case NL80211_IFTYPE_MESH_POINT: | |
936 | if (!ieee80211_vif_is_mesh(&sdata->vif)) | |
937 | break; | |
938 | ieee80211_mesh_rx_queued_mgmt(sdata, skb); | |
939 | break; | |
940 | default: | |
941 | WARN(1, "frame for unexpected interface type"); | |
1fa57d01 JB |
942 | break; |
943 | } | |
36b3a628 JB |
944 | |
945 | kfree_skb(skb); | |
1fa57d01 JB |
946 | } |
947 | ||
948 | /* then other type-dependent work */ | |
949 | switch (sdata->vif.type) { | |
950 | case NL80211_IFTYPE_STATION: | |
951 | ieee80211_sta_work(sdata); | |
952 | break; | |
953 | case NL80211_IFTYPE_ADHOC: | |
954 | ieee80211_ibss_work(sdata); | |
955 | break; | |
956 | case NL80211_IFTYPE_MESH_POINT: | |
957 | if (!ieee80211_vif_is_mesh(&sdata->vif)) | |
958 | break; | |
959 | ieee80211_mesh_work(sdata); | |
960 | break; | |
961 | default: | |
962 | break; | |
963 | } | |
964 | } | |
965 | ||
966 | ||
75636525 JB |
967 | /* |
968 | * Helper function to initialise an interface to a specific type. | |
969 | */ | |
970 | static void ieee80211_setup_sdata(struct ieee80211_sub_if_data *sdata, | |
05c914fe | 971 | enum nl80211_iftype type) |
f0706e82 | 972 | { |
75636525 JB |
973 | /* clear type-dependent union */ |
974 | memset(&sdata->u, 0, sizeof(sdata->u)); | |
975 | ||
976 | /* and set some type-dependent values */ | |
977 | sdata->vif.type = type; | |
2ca27bcf | 978 | sdata->vif.p2p = false; |
587e729e | 979 | sdata->dev->netdev_ops = &ieee80211_dataif_ops; |
60719ffd | 980 | sdata->wdev.iftype = type; |
75636525 | 981 | |
a621fa4d JB |
982 | sdata->control_port_protocol = cpu_to_be16(ETH_P_PAE); |
983 | sdata->control_port_no_encrypt = false; | |
984 | ||
b53be792 SW |
985 | sdata->noack_map = 0; |
986 | ||
75636525 JB |
987 | /* only monitor differs */ |
988 | sdata->dev->type = ARPHRD_ETHER; | |
989 | ||
35f20c14 | 990 | skb_queue_head_init(&sdata->skb_queue); |
1fa57d01 | 991 | INIT_WORK(&sdata->work, ieee80211_iface_work); |
35f20c14 | 992 | |
75636525 | 993 | switch (type) { |
2ca27bcf JB |
994 | case NL80211_IFTYPE_P2P_GO: |
995 | type = NL80211_IFTYPE_AP; | |
996 | sdata->vif.type = type; | |
997 | sdata->vif.p2p = true; | |
998 | /* fall through */ | |
05c914fe | 999 | case NL80211_IFTYPE_AP: |
75636525 JB |
1000 | skb_queue_head_init(&sdata->u.ap.ps_bc_buf); |
1001 | INIT_LIST_HEAD(&sdata->u.ap.vlans); | |
1002 | break; | |
2ca27bcf JB |
1003 | case NL80211_IFTYPE_P2P_CLIENT: |
1004 | type = NL80211_IFTYPE_STATION; | |
1005 | sdata->vif.type = type; | |
1006 | sdata->vif.p2p = true; | |
1007 | /* fall through */ | |
05c914fe | 1008 | case NL80211_IFTYPE_STATION: |
9c6bd790 | 1009 | ieee80211_sta_setup_sdata(sdata); |
472dbc45 | 1010 | break; |
46900298 JB |
1011 | case NL80211_IFTYPE_ADHOC: |
1012 | ieee80211_ibss_setup_sdata(sdata); | |
1013 | break; | |
05c914fe | 1014 | case NL80211_IFTYPE_MESH_POINT: |
75636525 JB |
1015 | if (ieee80211_vif_is_mesh(&sdata->vif)) |
1016 | ieee80211_mesh_init_sdata(sdata); | |
1017 | break; | |
05c914fe | 1018 | case NL80211_IFTYPE_MONITOR: |
75636525 | 1019 | sdata->dev->type = ARPHRD_IEEE80211_RADIOTAP; |
587e729e | 1020 | sdata->dev->netdev_ops = &ieee80211_monitorif_ops; |
75636525 JB |
1021 | sdata->u.mntr_flags = MONITOR_FLAG_CONTROL | |
1022 | MONITOR_FLAG_OTHER_BSS; | |
1023 | break; | |
05c914fe JB |
1024 | case NL80211_IFTYPE_WDS: |
1025 | case NL80211_IFTYPE_AP_VLAN: | |
75636525 | 1026 | break; |
05c914fe | 1027 | case NL80211_IFTYPE_UNSPECIFIED: |
2e161f78 | 1028 | case NUM_NL80211_IFTYPES: |
75636525 JB |
1029 | BUG(); |
1030 | break; | |
1031 | } | |
1032 | ||
1033 | ieee80211_debugfs_add_netdev(sdata); | |
1034 | } | |
1035 | ||
94c514fe AE |
1036 | static void ieee80211_clean_sdata(struct ieee80211_sub_if_data *sdata) |
1037 | { | |
1038 | switch (sdata->vif.type) { | |
1039 | case NL80211_IFTYPE_MESH_POINT: | |
1040 | mesh_path_flush_by_iface(sdata); | |
1041 | break; | |
1042 | ||
1043 | default: | |
1044 | break; | |
1045 | } | |
1046 | } | |
1047 | ||
34d4bc4d JB |
1048 | static int ieee80211_runtime_change_iftype(struct ieee80211_sub_if_data *sdata, |
1049 | enum nl80211_iftype type) | |
1050 | { | |
1051 | struct ieee80211_local *local = sdata->local; | |
1052 | int ret, err; | |
2ca27bcf JB |
1053 | enum nl80211_iftype internal_type = type; |
1054 | bool p2p = false; | |
34d4bc4d JB |
1055 | |
1056 | ASSERT_RTNL(); | |
1057 | ||
1058 | if (!local->ops->change_interface) | |
1059 | return -EBUSY; | |
1060 | ||
1061 | switch (sdata->vif.type) { | |
1062 | case NL80211_IFTYPE_AP: | |
1063 | case NL80211_IFTYPE_STATION: | |
1064 | case NL80211_IFTYPE_ADHOC: | |
1065 | /* | |
1066 | * Could maybe also all others here? | |
1067 | * Just not sure how that interacts | |
1068 | * with the RX/config path e.g. for | |
1069 | * mesh. | |
1070 | */ | |
1071 | break; | |
1072 | default: | |
1073 | return -EBUSY; | |
1074 | } | |
1075 | ||
1076 | switch (type) { | |
1077 | case NL80211_IFTYPE_AP: | |
1078 | case NL80211_IFTYPE_STATION: | |
1079 | case NL80211_IFTYPE_ADHOC: | |
1080 | /* | |
1081 | * Could probably support everything | |
1082 | * but WDS here (WDS do_open can fail | |
1083 | * under memory pressure, which this | |
1084 | * code isn't prepared to handle). | |
1085 | */ | |
1086 | break; | |
2ca27bcf JB |
1087 | case NL80211_IFTYPE_P2P_CLIENT: |
1088 | p2p = true; | |
1089 | internal_type = NL80211_IFTYPE_STATION; | |
1090 | break; | |
1091 | case NL80211_IFTYPE_P2P_GO: | |
1092 | p2p = true; | |
1093 | internal_type = NL80211_IFTYPE_AP; | |
1094 | break; | |
34d4bc4d JB |
1095 | default: |
1096 | return -EBUSY; | |
1097 | } | |
1098 | ||
2ca27bcf | 1099 | ret = ieee80211_check_concurrent_iface(sdata, internal_type); |
34d4bc4d JB |
1100 | if (ret) |
1101 | return ret; | |
1102 | ||
1103 | ieee80211_do_stop(sdata, false); | |
1104 | ||
1105 | ieee80211_teardown_sdata(sdata->dev); | |
1106 | ||
2ca27bcf | 1107 | ret = drv_change_interface(local, sdata, internal_type, p2p); |
34d4bc4d JB |
1108 | if (ret) |
1109 | type = sdata->vif.type; | |
1110 | ||
3a25a8c8 JB |
1111 | /* |
1112 | * Ignore return value here, there's not much we can do since | |
1113 | * the driver changed the interface type internally already. | |
1114 | * The warnings will hopefully make driver authors fix it :-) | |
1115 | */ | |
1116 | ieee80211_check_queues(sdata); | |
1117 | ||
34d4bc4d JB |
1118 | ieee80211_setup_sdata(sdata, type); |
1119 | ||
1120 | err = ieee80211_do_open(sdata->dev, false); | |
1121 | WARN(err, "type change: do_open returned %d", err); | |
1122 | ||
1123 | return ret; | |
1124 | } | |
1125 | ||
f3947e2d | 1126 | int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, |
05c914fe | 1127 | enum nl80211_iftype type) |
75636525 | 1128 | { |
34d4bc4d JB |
1129 | int ret; |
1130 | ||
f3947e2d JB |
1131 | ASSERT_RTNL(); |
1132 | ||
2ca27bcf | 1133 | if (type == ieee80211_vif_type_p2p(&sdata->vif)) |
f3947e2d JB |
1134 | return 0; |
1135 | ||
e60c7744 | 1136 | /* Setting ad-hoc mode on non-IBSS channel is not supported. */ |
dcebf45c PR |
1137 | if (sdata->local->oper_channel->flags & IEEE80211_CHAN_NO_IBSS && |
1138 | type == NL80211_IFTYPE_ADHOC) | |
e60c7744 JB |
1139 | return -EOPNOTSUPP; |
1140 | ||
34d4bc4d JB |
1141 | if (ieee80211_sdata_running(sdata)) { |
1142 | ret = ieee80211_runtime_change_iftype(sdata, type); | |
1143 | if (ret) | |
1144 | return ret; | |
1145 | } else { | |
1146 | /* Purge and reset type-dependent state. */ | |
1147 | ieee80211_teardown_sdata(sdata->dev); | |
1148 | ieee80211_setup_sdata(sdata, type); | |
1149 | } | |
75636525 JB |
1150 | |
1151 | /* reset some values that shouldn't be kept across type changes */ | |
bda3933a | 1152 | sdata->vif.bss_conf.basic_rates = |
96dd22ac JB |
1153 | ieee80211_mandatory_rates(sdata->local, |
1154 | sdata->local->hw.conf.channel->band); | |
75636525 | 1155 | sdata->drop_unencrypted = 0; |
9bc383de JB |
1156 | if (type == NL80211_IFTYPE_STATION) |
1157 | sdata->u.mgd.use_4addr = false; | |
f3947e2d JB |
1158 | |
1159 | return 0; | |
f0706e82 JB |
1160 | } |
1161 | ||
fa9029f8 JB |
1162 | static void ieee80211_assign_perm_addr(struct ieee80211_local *local, |
1163 | struct net_device *dev, | |
1164 | enum nl80211_iftype type) | |
1165 | { | |
1166 | struct ieee80211_sub_if_data *sdata; | |
1167 | u64 mask, start, addr, val, inc; | |
1168 | u8 *m; | |
1169 | u8 tmp_addr[ETH_ALEN]; | |
1170 | int i; | |
1171 | ||
1172 | /* default ... something at least */ | |
1173 | memcpy(dev->perm_addr, local->hw.wiphy->perm_addr, ETH_ALEN); | |
1174 | ||
1175 | if (is_zero_ether_addr(local->hw.wiphy->addr_mask) && | |
1176 | local->hw.wiphy->n_addresses <= 1) | |
1177 | return; | |
1178 | ||
1179 | ||
1180 | mutex_lock(&local->iflist_mtx); | |
1181 | ||
1182 | switch (type) { | |
1183 | case NL80211_IFTYPE_MONITOR: | |
1184 | /* doesn't matter */ | |
1185 | break; | |
1186 | case NL80211_IFTYPE_WDS: | |
1187 | case NL80211_IFTYPE_AP_VLAN: | |
1188 | /* match up with an AP interface */ | |
1189 | list_for_each_entry(sdata, &local->interfaces, list) { | |
1190 | if (sdata->vif.type != NL80211_IFTYPE_AP) | |
1191 | continue; | |
1192 | memcpy(dev->perm_addr, sdata->vif.addr, ETH_ALEN); | |
1193 | break; | |
1194 | } | |
1195 | /* keep default if no AP interface present */ | |
1196 | break; | |
1197 | default: | |
1198 | /* assign a new address if possible -- try n_addresses first */ | |
1199 | for (i = 0; i < local->hw.wiphy->n_addresses; i++) { | |
1200 | bool used = false; | |
1201 | ||
1202 | list_for_each_entry(sdata, &local->interfaces, list) { | |
1203 | if (memcmp(local->hw.wiphy->addresses[i].addr, | |
1204 | sdata->vif.addr, ETH_ALEN) == 0) { | |
1205 | used = true; | |
1206 | break; | |
1207 | } | |
1208 | } | |
1209 | ||
1210 | if (!used) { | |
1211 | memcpy(dev->perm_addr, | |
1212 | local->hw.wiphy->addresses[i].addr, | |
1213 | ETH_ALEN); | |
1214 | break; | |
1215 | } | |
1216 | } | |
1217 | ||
1218 | /* try mask if available */ | |
1219 | if (is_zero_ether_addr(local->hw.wiphy->addr_mask)) | |
1220 | break; | |
1221 | ||
1222 | m = local->hw.wiphy->addr_mask; | |
1223 | mask = ((u64)m[0] << 5*8) | ((u64)m[1] << 4*8) | | |
1224 | ((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) | | |
1225 | ((u64)m[4] << 1*8) | ((u64)m[5] << 0*8); | |
1226 | ||
1227 | if (__ffs64(mask) + hweight64(mask) != fls64(mask)) { | |
1228 | /* not a contiguous mask ... not handled now! */ | |
1229 | printk(KERN_DEBUG "not contiguous\n"); | |
1230 | break; | |
1231 | } | |
1232 | ||
1233 | m = local->hw.wiphy->perm_addr; | |
1234 | start = ((u64)m[0] << 5*8) | ((u64)m[1] << 4*8) | | |
1235 | ((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) | | |
1236 | ((u64)m[4] << 1*8) | ((u64)m[5] << 0*8); | |
1237 | ||
1238 | inc = 1ULL<<__ffs64(mask); | |
1239 | val = (start & mask); | |
1240 | addr = (start & ~mask) | (val & mask); | |
1241 | do { | |
1242 | bool used = false; | |
1243 | ||
1244 | tmp_addr[5] = addr >> 0*8; | |
1245 | tmp_addr[4] = addr >> 1*8; | |
1246 | tmp_addr[3] = addr >> 2*8; | |
1247 | tmp_addr[2] = addr >> 3*8; | |
1248 | tmp_addr[1] = addr >> 4*8; | |
1249 | tmp_addr[0] = addr >> 5*8; | |
1250 | ||
1251 | val += inc; | |
1252 | ||
1253 | list_for_each_entry(sdata, &local->interfaces, list) { | |
1254 | if (memcmp(tmp_addr, sdata->vif.addr, | |
1255 | ETH_ALEN) == 0) { | |
1256 | used = true; | |
1257 | break; | |
1258 | } | |
1259 | } | |
1260 | ||
1261 | if (!used) { | |
1262 | memcpy(dev->perm_addr, tmp_addr, ETH_ALEN); | |
1263 | break; | |
1264 | } | |
1265 | addr = (start & ~mask) | (val & mask); | |
1266 | } while (addr != start); | |
1267 | ||
1268 | break; | |
1269 | } | |
1270 | ||
1271 | mutex_unlock(&local->iflist_mtx); | |
1272 | } | |
1273 | ||
3e122be0 | 1274 | int ieee80211_if_add(struct ieee80211_local *local, const char *name, |
05c914fe | 1275 | struct net_device **new_dev, enum nl80211_iftype type, |
ee385855 | 1276 | struct vif_params *params) |
f0706e82 JB |
1277 | { |
1278 | struct net_device *ndev; | |
f0706e82 | 1279 | struct ieee80211_sub_if_data *sdata = NULL; |
75636525 | 1280 | int ret, i; |
ded81f6b | 1281 | int txqs = 1; |
f0706e82 JB |
1282 | |
1283 | ASSERT_RTNL(); | |
75636525 | 1284 | |
ded81f6b JB |
1285 | if (local->hw.queues >= IEEE80211_NUM_ACS) |
1286 | txqs = IEEE80211_NUM_ACS; | |
1287 | ||
55d99059 | 1288 | ndev = alloc_netdev_mqs(sizeof(*sdata) + local->hw.vif_data_size, |
ded81f6b | 1289 | name, ieee80211_if_setup, txqs, 1); |
f0706e82 JB |
1290 | if (!ndev) |
1291 | return -ENOMEM; | |
a272a720 | 1292 | dev_net_set(ndev, wiphy_net(local->hw.wiphy)); |
f0706e82 | 1293 | |
f3994ece JB |
1294 | ndev->needed_headroom = local->tx_headroom + |
1295 | 4*6 /* four MAC addresses */ | |
1296 | + 2 + 2 + 2 + 2 /* ctl, dur, seq, qos */ | |
1297 | + 6 /* mesh */ | |
1298 | + 8 /* rfc1042/bridge tunnel */ | |
1299 | - ETH_HLEN /* ethernet hard_header_len */ | |
1300 | + IEEE80211_ENCRYPT_HEADROOM; | |
1301 | ndev->needed_tailroom = IEEE80211_ENCRYPT_TAILROOM; | |
1302 | ||
59e7e707 TLSC |
1303 | ret = dev_alloc_name(ndev, ndev->name); |
1304 | if (ret < 0) | |
1305 | goto fail; | |
1306 | ||
fa9029f8 JB |
1307 | ieee80211_assign_perm_addr(local, ndev, type); |
1308 | memcpy(ndev->dev_addr, ndev->perm_addr, ETH_ALEN); | |
f0706e82 JB |
1309 | SET_NETDEV_DEV(ndev, wiphy_dev(local->hw.wiphy)); |
1310 | ||
3e122be0 JB |
1311 | /* don't use IEEE80211_DEV_TO_SUB_IF because it checks too much */ |
1312 | sdata = netdev_priv(ndev); | |
f0706e82 | 1313 | ndev->ieee80211_ptr = &sdata->wdev; |
47846c9b JB |
1314 | memcpy(sdata->vif.addr, ndev->dev_addr, ETH_ALEN); |
1315 | memcpy(sdata->name, ndev->name, IFNAMSIZ); | |
75636525 JB |
1316 | |
1317 | /* initialise type-independent data */ | |
f0706e82 | 1318 | sdata->wdev.wiphy = local->hw.wiphy; |
f0706e82 | 1319 | sdata->local = local; |
75636525 | 1320 | sdata->dev = ndev; |
68542962 JO |
1321 | #ifdef CONFIG_INET |
1322 | sdata->arp_filter_state = true; | |
1323 | #endif | |
75636525 JB |
1324 | |
1325 | for (i = 0; i < IEEE80211_FRAGMENT_MAX; i++) | |
1326 | skb_queue_head_init(&sdata->fragments[i].skb_list); | |
1327 | ||
1328 | INIT_LIST_HEAD(&sdata->key_list); | |
1329 | ||
37eb0b16 JM |
1330 | for (i = 0; i < IEEE80211_NUM_BANDS; i++) { |
1331 | struct ieee80211_supported_band *sband; | |
1332 | sband = local->hw.wiphy->bands[i]; | |
1333 | sdata->rc_rateidx_mask[i] = | |
1334 | sband ? (1 << sband->n_bitrates) - 1 : 0; | |
19468413 SW |
1335 | if (sband) |
1336 | memcpy(sdata->rc_rateidx_mcs_mask[i], | |
1337 | sband->ht_cap.mcs.rx_mask, | |
1338 | sizeof(sdata->rc_rateidx_mcs_mask[i])); | |
1339 | else | |
1340 | memset(sdata->rc_rateidx_mcs_mask[i], 0, | |
1341 | sizeof(sdata->rc_rateidx_mcs_mask[i])); | |
37eb0b16 | 1342 | } |
75636525 | 1343 | |
3a25a8c8 JB |
1344 | ieee80211_set_default_queues(sdata); |
1345 | ||
75636525 JB |
1346 | /* setup type-dependent data */ |
1347 | ieee80211_setup_sdata(sdata, type); | |
f0706e82 | 1348 | |
9bc383de JB |
1349 | if (params) { |
1350 | ndev->ieee80211_ptr->use_4addr = params->use_4addr; | |
1351 | if (type == NL80211_IFTYPE_STATION) | |
1352 | sdata->u.mgd.use_4addr = params->use_4addr; | |
1353 | } | |
1354 | ||
f0706e82 JB |
1355 | ret = register_netdevice(ndev); |
1356 | if (ret) | |
1357 | goto fail; | |
1358 | ||
c771c9d8 | 1359 | mutex_lock(&local->iflist_mtx); |
79010420 | 1360 | list_add_tail_rcu(&sdata->list, &local->interfaces); |
c771c9d8 | 1361 | mutex_unlock(&local->iflist_mtx); |
79010420 | 1362 | |
f0706e82 JB |
1363 | if (new_dev) |
1364 | *new_dev = ndev; | |
f0706e82 | 1365 | |
f0706e82 JB |
1366 | return 0; |
1367 | ||
75636525 | 1368 | fail: |
f0706e82 JB |
1369 | free_netdev(ndev); |
1370 | return ret; | |
1371 | } | |
1372 | ||
f698d856 | 1373 | void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata) |
f0706e82 | 1374 | { |
f0706e82 | 1375 | ASSERT_RTNL(); |
11a843b7 | 1376 | |
c771c9d8 | 1377 | mutex_lock(&sdata->local->iflist_mtx); |
75636525 | 1378 | list_del_rcu(&sdata->list); |
c771c9d8 JB |
1379 | mutex_unlock(&sdata->local->iflist_mtx); |
1380 | ||
94c514fe AE |
1381 | /* clean up type-dependent data */ |
1382 | ieee80211_clean_sdata(sdata); | |
ece1a2e7 | 1383 | |
75636525 | 1384 | synchronize_rcu(); |
f698d856 | 1385 | unregister_netdevice(sdata->dev); |
f0706e82 JB |
1386 | } |
1387 | ||
75636525 JB |
1388 | /* |
1389 | * Remove all interfaces, may only be called at hardware unregistration | |
1390 | * time because it doesn't do RCU-safe list removals. | |
1391 | */ | |
1392 | void ieee80211_remove_interfaces(struct ieee80211_local *local) | |
f0706e82 | 1393 | { |
75636525 | 1394 | struct ieee80211_sub_if_data *sdata, *tmp; |
efe117ab | 1395 | LIST_HEAD(unreg_list); |
f0706e82 JB |
1396 | |
1397 | ASSERT_RTNL(); | |
1398 | ||
efe117ab | 1399 | mutex_lock(&local->iflist_mtx); |
75636525 JB |
1400 | list_for_each_entry_safe(sdata, tmp, &local->interfaces, list) { |
1401 | list_del(&sdata->list); | |
c771c9d8 | 1402 | |
94c514fe | 1403 | ieee80211_clean_sdata(sdata); |
ece1a2e7 | 1404 | |
efe117ab | 1405 | unregister_netdevice_queue(sdata->dev, &unreg_list); |
f0706e82 | 1406 | } |
efe117ab ED |
1407 | mutex_unlock(&local->iflist_mtx); |
1408 | unregister_netdevice_many(&unreg_list); | |
5f04d506 | 1409 | list_del(&unreg_list); |
f0706e82 | 1410 | } |
5cff20e6 JB |
1411 | |
1412 | static u32 ieee80211_idle_off(struct ieee80211_local *local, | |
1413 | const char *reason) | |
1414 | { | |
1415 | if (!(local->hw.conf.flags & IEEE80211_CONF_IDLE)) | |
1416 | return 0; | |
1417 | ||
1418 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG | |
0fb9a9ec | 1419 | wiphy_debug(local->hw.wiphy, "device no longer idle - %s\n", reason); |
5cff20e6 JB |
1420 | #endif |
1421 | ||
1422 | local->hw.conf.flags &= ~IEEE80211_CONF_IDLE; | |
1423 | return IEEE80211_CONF_CHANGE_IDLE; | |
1424 | } | |
1425 | ||
1426 | static u32 ieee80211_idle_on(struct ieee80211_local *local) | |
1427 | { | |
1428 | if (local->hw.conf.flags & IEEE80211_CONF_IDLE) | |
1429 | return 0; | |
1430 | ||
1431 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG | |
0fb9a9ec | 1432 | wiphy_debug(local->hw.wiphy, "device now idle\n"); |
5cff20e6 JB |
1433 | #endif |
1434 | ||
a80f7c0b JB |
1435 | drv_flush(local, false); |
1436 | ||
5cff20e6 JB |
1437 | local->hw.conf.flags |= IEEE80211_CONF_IDLE; |
1438 | return IEEE80211_CONF_CHANGE_IDLE; | |
1439 | } | |
1440 | ||
1441 | u32 __ieee80211_recalc_idle(struct ieee80211_local *local) | |
1442 | { | |
1443 | struct ieee80211_sub_if_data *sdata; | |
1444 | int count = 0; | |
21f83589 | 1445 | bool working = false, scanning = false, hw_roc = false; |
7da7cc1d | 1446 | struct ieee80211_work *wk; |
67408c8c | 1447 | unsigned int led_trig_start = 0, led_trig_stop = 0; |
5cff20e6 | 1448 | |
7da7cc1d JB |
1449 | #ifdef CONFIG_PROVE_LOCKING |
1450 | WARN_ON(debug_locks && !lockdep_rtnl_is_held() && | |
1451 | !lockdep_is_held(&local->iflist_mtx)); | |
1452 | #endif | |
1453 | lockdep_assert_held(&local->mtx); | |
5cff20e6 JB |
1454 | |
1455 | list_for_each_entry(sdata, &local->interfaces, list) { | |
7da7cc1d JB |
1456 | if (!ieee80211_sdata_running(sdata)) { |
1457 | sdata->vif.bss_conf.idle = true; | |
5cff20e6 | 1458 | continue; |
7da7cc1d JB |
1459 | } |
1460 | ||
1461 | sdata->old_idle = sdata->vif.bss_conf.idle; | |
1462 | ||
5cff20e6 JB |
1463 | /* do not count disabled managed interfaces */ |
1464 | if (sdata->vif.type == NL80211_IFTYPE_STATION && | |
66e67e41 JB |
1465 | !sdata->u.mgd.associated && |
1466 | !sdata->u.mgd.auth_data && | |
1467 | !sdata->u.mgd.assoc_data) { | |
7da7cc1d | 1468 | sdata->vif.bss_conf.idle = true; |
5cff20e6 | 1469 | continue; |
7da7cc1d | 1470 | } |
5cff20e6 JB |
1471 | /* do not count unused IBSS interfaces */ |
1472 | if (sdata->vif.type == NL80211_IFTYPE_ADHOC && | |
7da7cc1d JB |
1473 | !sdata->u.ibss.ssid_len) { |
1474 | sdata->vif.bss_conf.idle = true; | |
5cff20e6 | 1475 | continue; |
7da7cc1d | 1476 | } |
5cff20e6 | 1477 | /* count everything else */ |
405385f8 | 1478 | sdata->vif.bss_conf.idle = false; |
5cff20e6 JB |
1479 | count++; |
1480 | } | |
1481 | ||
7da7cc1d JB |
1482 | list_for_each_entry(wk, &local->work_list, list) { |
1483 | working = true; | |
1484 | wk->sdata->vif.bss_conf.idle = false; | |
1485 | } | |
1486 | ||
885bd8ec EP |
1487 | if (local->scan_sdata && |
1488 | !(local->hw.flags & IEEE80211_HW_SCAN_WHILE_IDLE)) { | |
7da7cc1d JB |
1489 | scanning = true; |
1490 | local->scan_sdata->vif.bss_conf.idle = false; | |
1491 | } | |
1492 | ||
21f83589 JB |
1493 | if (local->hw_roc_channel) |
1494 | hw_roc = true; | |
1495 | ||
7da7cc1d | 1496 | list_for_each_entry(sdata, &local->interfaces, list) { |
0dee0068 MSS |
1497 | if (sdata->vif.type == NL80211_IFTYPE_MONITOR || |
1498 | sdata->vif.type == NL80211_IFTYPE_AP_VLAN) | |
1499 | continue; | |
7da7cc1d JB |
1500 | if (sdata->old_idle == sdata->vif.bss_conf.idle) |
1501 | continue; | |
1502 | if (!ieee80211_sdata_running(sdata)) | |
1503 | continue; | |
1504 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_IDLE); | |
1505 | } | |
1506 | ||
21f83589 | 1507 | if (working || scanning || hw_roc) |
67408c8c JB |
1508 | led_trig_start |= IEEE80211_TPT_LEDTRIG_FL_WORK; |
1509 | else | |
1510 | led_trig_stop |= IEEE80211_TPT_LEDTRIG_FL_WORK; | |
1511 | ||
1512 | if (count) | |
1513 | led_trig_start |= IEEE80211_TPT_LEDTRIG_FL_CONNECTED; | |
1514 | else | |
1515 | led_trig_stop |= IEEE80211_TPT_LEDTRIG_FL_CONNECTED; | |
1516 | ||
1517 | ieee80211_mod_tpt_led_trig(local, led_trig_start, led_trig_stop); | |
1518 | ||
21f83589 JB |
1519 | if (hw_roc) |
1520 | return ieee80211_idle_off(local, "hw remain-on-channel"); | |
7da7cc1d JB |
1521 | if (working) |
1522 | return ieee80211_idle_off(local, "working"); | |
1523 | if (scanning) | |
1524 | return ieee80211_idle_off(local, "scanning"); | |
5cff20e6 JB |
1525 | if (!count) |
1526 | return ieee80211_idle_on(local); | |
1527 | else | |
1528 | return ieee80211_idle_off(local, "in use"); | |
1529 | ||
1530 | return 0; | |
1531 | } | |
1532 | ||
1533 | void ieee80211_recalc_idle(struct ieee80211_local *local) | |
1534 | { | |
1535 | u32 chg; | |
1536 | ||
1537 | mutex_lock(&local->iflist_mtx); | |
1538 | chg = __ieee80211_recalc_idle(local); | |
1539 | mutex_unlock(&local->iflist_mtx); | |
58905ca5 JB |
1540 | if (chg) |
1541 | ieee80211_hw_config(local, chg); | |
5cff20e6 | 1542 | } |
47846c9b JB |
1543 | |
1544 | static int netdev_notify(struct notifier_block *nb, | |
1545 | unsigned long state, | |
1546 | void *ndev) | |
1547 | { | |
1548 | struct net_device *dev = ndev; | |
1549 | struct ieee80211_sub_if_data *sdata; | |
1550 | ||
1551 | if (state != NETDEV_CHANGENAME) | |
1552 | return 0; | |
1553 | ||
1554 | if (!dev->ieee80211_ptr || !dev->ieee80211_ptr->wiphy) | |
1555 | return 0; | |
1556 | ||
1557 | if (dev->ieee80211_ptr->wiphy->privid != mac80211_wiphy_privid) | |
1558 | return 0; | |
1559 | ||
1560 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
1561 | ||
2f5265e6 | 1562 | memcpy(sdata->name, dev->name, IFNAMSIZ); |
47846c9b JB |
1563 | |
1564 | ieee80211_debugfs_rename_netdev(sdata); | |
1565 | return 0; | |
1566 | } | |
1567 | ||
1568 | static struct notifier_block mac80211_netdev_notifier = { | |
1569 | .notifier_call = netdev_notify, | |
1570 | }; | |
1571 | ||
1572 | int ieee80211_iface_init(void) | |
1573 | { | |
1574 | return register_netdevice_notifier(&mac80211_netdev_notifier); | |
1575 | } | |
1576 | ||
1577 | void ieee80211_iface_exit(void) | |
1578 | { | |
1579 | unregister_netdevice_notifier(&mac80211_netdev_notifier); | |
1580 | } |